Abstract

An LED light bulb is provided. The LED light bulb includes a lamp housing, a bulb base, a stem, two conductive supports, a driving circuit, and a flexible LED filament. The flexible filament includes a first LED section, a second LED section, a conductive section, a first conductive electrode, and a second conductive electrode. The first LED section is bent in a first three-dimensional curve shape. The second LED section is bent in a second three-dimensional curve shape. The conductive section includes a center point of the flexible LED filament. The flexible LED filament is bent in a third three-dimensional curve shape including the first three-dimensional curve shape, the conductive section, and the second three-dimensional curve shape. A polarity of the conductor is opposite to polarities of the first conductive electrode and the second conductive electrode

IPC Classes  ?

• F21K 9/232 - Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings specially adapted for generating an essentially omnidirectional light distribution, e.g. with a glass bulb
• F21K 9/235 - Details of bases or caps, i.e. the parts that connect the light source to a fittingArrangement of components within bases or caps
• F21K 9/238 - Arrangement or mounting of circuit elements integrated in the light source
• F21V 3/10 - GlobesBowlsCover glasses characterised by materials, surface treatments or coatings characterised by coatings
• F21Y 107/00 - Light sources with three-dimensionally disposed light-generating elements
• F21Y 107/20 - Light sources with three-dimensionally disposed light-generating elements on convex supports or substrates, e.g. on the outer surface of spheres
• F21Y 107/70 - Light sources with three-dimensionally disposed light-generating elements on flexible or deformable supports or substrates, e.g. for changing the light source into a desired form
• F21Y 115/10 - Light-emitting diodes [LED]
• H05B 45/00 - Circuit arrangements for operating light-emitting diodes [LED]

Abstract

An LED light bulb is provided. The LED light bulb includes a lamp housing, a bulb base, a stem, first and second conductive supports, a driving circuit, and a flexible LED filament. The flexible filament includes two conductive electrodes, a first LED section, a second LED section, and a conductive section. The first LED section is bent in a first space curved shape. The second LED section is bent in a second space curved shape. The conductive section includes a center point of the flexible LED filament. The flexible LED filament is bent in a third space curved shape comprising the first space curved shape and the second space curved shape.

IPC Classes  ?

• F21K 9/232 - Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings specially adapted for generating an essentially omnidirectional light distribution, e.g. with a glass bulb
• F21K 9/235 - Details of bases or caps, i.e. the parts that connect the light source to a fittingArrangement of components within bases or caps
• F21K 9/238 - Arrangement or mounting of circuit elements integrated in the light source
• F21V 3/10 - GlobesBowlsCover glasses characterised by materials, surface treatments or coatings characterised by coatings
• F21Y 107/00 - Light sources with three-dimensionally disposed light-generating elements
• F21Y 107/20 - Light sources with three-dimensionally disposed light-generating elements on convex supports or substrates, e.g. on the outer surface of spheres
• F21Y 107/70 - Light sources with three-dimensionally disposed light-generating elements on flexible or deformable supports or substrates, e.g. for changing the light source into a desired form
• F21Y 115/10 - Light-emitting diodes [LED]
• H05B 45/00 - Circuit arrangements for operating light-emitting diodes [LED]

Goods & Services

Electronic chips for the manufacture of integrated circuits; Power adapters; Electric voltage transformers; Current rectifiers; Electric transformers; Distribution transformers; Adapter plugs; Plug connectors; Electrical transformers; Battery charge devices; Photovoltaic solar modules; Photovoltaic apparatus for generating electricity; Photovoltaic apparatus for converting solar radiation to electrical energy; battery chargers; plates for batteries; Electric batteries; photovoltaic cells; Batteries for vehicles; Battery boxes; Charging appliances for rechargeable equipment; Rechargeable batteries; Battery charging devices for motor vehicles; Lithium ion batteries; Lithium secondary batteries; Charging stations for electric vehicles; Wireless battery chargers; Solar panels for the production of electricity. Fluorescent lamps; LED lamps; Lighting tubes; Fluorescent lighting tubes; Luminous tubes for lighting; Filaments for electric lamps; Hanging ceiling lamps; Electric lamp bulbs; downlights; spotlights; Compact fluorescent light bulbs. Corporate image development consultation; Promoting the benefits of energy efficient lighting technologies to professionals in the lighting field; Promotional services; Dissemination of advertisements and of advertising material [flyers, brochures, leaflets and samples]; On-line advertising and marketing services; Providing business information via a web site; Business information services; Business expertise services; Business intelligence services; Business strategy services; Business management services; Business consulting services; Brand strategy services. Battery charging service for motor vehicles; Rental of portable battery chargers for electric cars; Rental of portable battery chargers for electric bicycles.

Goods & Services

Adapter plugs; Batteries for vehicles; Battery boxes; Battery charge devices; Battery chargers; Battery charging devices for motor vehicles; Charging appliances for rechargeable equipment; Current rectifiers; Distribution transformers; Electric transformers; Electric batteries; Electric voltage transformers; Electrical transformers; Electrical apparatus, namely, charging stations for charging electric vehicles; Electronic chips for the manufacture of integrated circuits; Photovoltaic cells; Photovoltaic solar panels for the production of electricity; Photovoltaic solar modules for production of electricity; Photovoltaic systems that convert sunlight into electric and thermal energy; Plates for batteries; Plug connectors; Power adapters; Solar panels for the production of electricity; Vehicle charging stations for electric electric delivery equipment, electric vehicles; Wireless battery chargers; Lithium ion batteries; Lithium secondary batteries; Rechargeable batteries Downlights; Spotlights; Electric lighting fixtures, namely, power failure backup safety lighting; Flat panel lighting apparatus; LED (light emitting diode) lighting fixtures; LED lighting systems, namely, LED modules, power supplies, and wiring; LED luminaires; Ceiling lights; Filaments for electric lamps; Fluorescent lamps; Fluorescent lighting tubes; LED lamps; Lighting tubes; Luminous tubes for lighting Brand concept and brand development services for corporate and individual clients; Brand concept and brand development services for corporate clients; Business services, namely, structuring, optimizing and change management consulting related to corporate in-house intellectual property departments and intellectual property asset management programs; Concept and brand development services for corporate clients; Corporate image consulting services; Corporate image development consultation; Dissemination of advertisements and of advertising material; Promoting the benefits of energy efficient lighting technologies to professionals in the lighting field; Promotional services, namely, distribution of advertising flyers, coupons, catalogs and promotional items of others; Providing a website featuring on-line classified advertisements; Providing business information via a web site; Retail store services featuring stationery Battery charging service for motor vehicles; Charging station services for electric vehicles; Installation of wiring and power supply equipment for transmission and distribution of electricity suitable for electric vehicle recharging stations; Rental of portable battery chargers for electric bicycles; Rental of portable battery chargers for electric cars; Rental of portable battery chargers for electric vehicles

Goods & Services

Adapter plugs; Batteries for vehicles; Batteries, electric; Battery boxes; Battery charge devices; Battery chargers; Battery charging devices for motor vehicles; Charging appliances for rechargeable equipment; Current rectifiers; Distribution transformers; Electric transformers; Electric voltage transformers; Electrical apparatus, namely, charging stations for charging electric vehicles; Electrical transformers; Electronic chips for the manufacture of integrated circuits; Lithium ion batteries; Lithium secondary batteries; Photovoltaic cells; Photovoltaic solar modules for production of electricity; Photovoltaic solar panels for the production of electricity; Photovoltaic apparatus for converting solar radiation to electrical energy and thermal heating; Plates for batteries; Plug connectors; Power adapters; Rechargeable batteries; Solar panels for the production of electricity; Vehicle charging stations for electric delivery equipment, electric vehicles; Wireless battery chargers; Electric power supplies; Electric wiring. Spotlights; Ceiling lights; Downlights; Electric lighting fixtures, namely, power failure backup safety lighting; Filaments for electric lamps; Flat panel lighting apparatus; Fluorescent lamps; LED (light emitting diode) lighting fixtures; LED lamps; LED light bulbs; LED lighting installations including LED modules; LED luminaires; Lighting tubes; Luminous tubes for lighting; Fluorescent lighting tubes. Brand concept and brand creation services for corporate and individual clients; Brand concept and brand creation services for corporate clients; Business consulting services in relation to structuring, optimizing and change management consulting related to corporate in-house intellectual property departments and intellectual property asset management programs; Corporate image consulting services; Corporate image development consultation; Dissemination of advertisements and of advertising material; Promoting the benefits of energy efficient lighting technologies to professionals in the lighting field; Promotional services, namely, distribution of advertising flyers, coupons, catalogs and promotional items of others; Providing a website featuring on-line classified advertisements; Providing business information via a web site; Retail store services featuring stationery supplies. Battery charging service for motor vehicles; Charging station services for electric vehicles; Installation of wiring and power supply equipment for transmission and distribution of electricity suitable for electric vehicle recharging stations; Rental of portable battery chargers for electric bicycles; Rental of portable battery chargers for electric cars; Rental of portable battery chargers for electric vehicles.

Goods & Services

Adapter plugs; Batteries for vehicles; Batteries, electric; Battery boxes; Battery charge devices; Battery chargers; Battery charging devices for motor vehicles; Charging appliances for rechargeable equipment; Current rectifiers; Distribution transformers; Electric transformers; Electric voltage transformers; Electrical apparatus, namely, charging stations for charging electric vehicles; Electrical transformers; Electronic chips for the manufacture of integrated circuits; Lithium ion batteries; Lithium secondary batteries; Photovoltaic cells; Photovoltaic solar modules for production of electricity; Photovoltaic solar panels for the production of electricity; Photovoltaic systems that convert sunlight into electric and thermal energy; Plates for batteries; Plug connectors; Power adapters; Rechargeable batteries; Solar panels for the production of electricity; Vehicle charging stations for electric delivery equipment, electric vehicles; Wireless battery chargers Spotlights; Ceiling lights; Downlights; Electric lighting fixtures, namely, power failure backup safety lighting; Filaments for electric lamps; Flat panel lighting apparatus; Fluorescent lamps; LED (light emitting diode) lighting fixtures; LED lamps; LED light bulbs; LED lighting systems, namely, LED modules, power supplies, and wiring; LED luminaires; Lighting tubes; Luminous tubes for lighting; Fluorescent lighting tubes Brand concept and brand development services for corporate and individual clients; Brand concept and brand development services for corporate clients; Business services, namely, structuring, optimizing and change management consulting related to corporate in-house intellectual property departments and intellectual property asset management programs; Concept and brand development services for corporate clients; Corporate image consulting services; Corporate image development consultation; Dissemination of advertisements and of advertising material; Promoting the benefits of energy efficient lighting technologies to professionals in the lighting field; Promotional services, namely, distribution of advertising flyers, coupons, catalogs and promotional items of others; Providing a website featuring on-line classified advertisements; Providing business information via a web site; Retail store services featuring stationery supplies Battery charging service for motor vehicles; Charging station services for electric vehicles; Installation of wiring and power supply equipment for transmission and distribution of electricity suitable for electric vehicle recharging stations; Rental of portable battery chargers for electric bicycles; Rental of portable battery chargers for electric cars; Rental of portable battery chargers for electric vehicles

Goods & Services

Fluorescent lamps; LED lamps; Lighting tubes; Fluorescent lighting tubes; Luminous tubes for lighting; Filaments for electric lamps; Hanging ceiling lamps; Electric lamp bulbs; downlights; spotlights; Compact fluorescent light bulbs. Corporate image development consultation; Promoting the benefits of energy efficient lighting technologies to professionals in the lighting field; Brand strategy services; Promotional services; Dissemination of advertisements and of advertising material [flyers, brochures, leaflets and samples]; On-line advertising and marketing services; Providing business information via a web site; Business information services; Business expertise services; Business intelligence services; Business strategy services; Business management services; Business consulting services.

Goods & Services

Downlights; Spotlights; Ceiling lights; Electric lighting fixtures, namely, power failure backup safety lighting; Filaments for electric lamps; Flat panel lighting apparatus; Fluorescent lamps; Fluorescent lighting tubes; LED (light emitting diode) lighting fixtures; LED lamps; LED light bulbs; LED lighting systems, namely, LED modules, power supplies, and wiring; LED luminaires; Lighting tubes; Luminous tubes for lighting

Goods & Services

Brand concept and brand development services for corporate clients; Brand concept and brand development services for corporate and individual clients; Business services, namely, structuring, optimizing and change management consulting related to corporate in-house intellectual property departments and intellectual property asset management programs; Concept and brand development services for corporate clients; Corporate image consulting services; Corporate image development consultation; Dissemination of advertisements and of advertising material; Promoting the benefits of energy efficient lighting technologies to professionals in the lighting field; Promotional services, namely, distribution of advertising flyers, coupons, catalogs and promotional items of others; Providing a website featuring on-line classified advertisements; Providing business information via a web site; Retail store services featuring stationery supplies

Abstract

An LED light bulb comprising a lamp housing, a bulb base, connected to the lamp housing, a stem connected to the bulb base and located in the lamp housing; an LED filament, disposed in the lamp housing, where points of the LED filament in an xyz coordinates are defined as x, y, and z, an x-y plane of the xyz coordinates is perpendicular to the height direction of the LED light bulb, an z-axis of xyz coordinates is parallel with the stem, and the projection of the LED filament on the x-y plane, y-z plane and x-z plane respectively has a length L1, L2 and L3, and the length L1, the length L2, and the length L3 are substantially in a ratio of 1:(0.5 to 1):(0.6 to 0.9).

IPC Classes  ?

• F21K 9/232 - Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings specially adapted for generating an essentially omnidirectional light distribution, e.g. with a glass bulb
• H05B 45/00 - Circuit arrangements for operating light-emitting diodes [LED]
• F21V 15/04 - Resilient mountings, e.g. shock-absorbers
• F21K 9/61 - Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction using light guides
• F21V 3/12 - GlobesBowlsCover glasses characterised by materials, surface treatments or coatings characterised by coatings the coatings comprising photoluminescent substances
• F21V 3/08 - GlobesBowlsCover glasses characterised by materials, surface treatments or coatings characterised by the material the material comprising photoluminescent substances
• F21Y 115/10 - Light-emitting diodes [LED]
• H05B 45/3577 - Emulating the dimming characteristics, brightness or colour temperature of incandescent lamps

Abstract

An LED filament includes a plurality of LED chips arranged in an array substantially along an axial direction of the LED filament and electrically connected with one another; two conductive electrodes disposed corresponding to the array, each of the two conductive electrodes being electrically connected to a corresponding LED chip at an end of the array; an enclosure coated on at least two sides of the array and the two conductive electrodes, and a portion of each of the two conductive electrodes being exposed from the enclosure; a surface of the enclosure defines a surface extending direction along the axial direction of the LED filament, a long side of each of the LED chips defines an LED extending direction, and the surface extending direction and the LED extending direction of at least one of the LED chips define an included angler.

IPC Classes  ?

• F21K 9/232 - Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings specially adapted for generating an essentially omnidirectional light distribution, e.g. with a glass bulb
• F21K 9/68 - Details of reflectors forming part of the light source
• F21V 23/06 - Arrangement of electric circuit elements in or on lighting devices the elements being coupling devices
• F21K 9/61 - Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction using light guides
• F21Y 115/10 - Light-emitting diodes [LED]
• F21V 29/503 - Cooling arrangements characterised by the adaptation for cooling of specific components of light sources
• F21Y 107/70 - Light sources with three-dimensionally disposed light-generating elements on flexible or deformable supports or substrates, e.g. for changing the light source into a desired form
• F21Y 109/00 - Light sources with light-generating elements disposed on transparent or translucent supports or substrates

Abstract

An LED filament comprising a plurality of LED filament units, each of the plurality of LED filament units includes a LED chip with an upper surface and a lower surface opposite to the upper surface of the LED chip, and a light conversion layer comprising a top layer and a base layer, and the base layer comprises an upper surface and a lower surface opposite to the upper surface of the base layer, where the top layer with an upper surface and a lower surface opposite to the upper surface of the top layer is disposed on at least two sides of each of the LED chips, the lower surface of each of the LED chips is close to the upper surface of the base layer, and the upper surface of the top layer is away from each of the LED chips.

IPC Classes  ?

• F21K 9/232 - Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings specially adapted for generating an essentially omnidirectional light distribution, e.g. with a glass bulb
• F21K 9/61 - Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction using light guides
• F21V 3/08 - GlobesBowlsCover glasses characterised by materials, surface treatments or coatings characterised by the material the material comprising photoluminescent substances
• F21V 3/12 - GlobesBowlsCover glasses characterised by materials, surface treatments or coatings characterised by coatings the coatings comprising photoluminescent substances
• F21V 15/04 - Resilient mountings, e.g. shock-absorbers
• H05B 45/00 - Circuit arrangements for operating light-emitting diodes [LED]
• F21Y 115/10 - Light-emitting diodes [LED]
• H05B 45/3577 - Emulating the dimming characteristics, brightness or colour temperature of incandescent lamps

Abstract

This application relates to the field of lighting, and discloses an LED filament including: at least one LED section, each LED section including at least two LED chips, adjacent LED chips being electrically connected to each other; electrodes, electrically connected to the LED section; and a light conversion layer, wrapping the LED section and parts of the electrodes, and including a top layer and a carrying layer, the carrying layer including a base layer and a transparent layer, the base layer including an upper surface and a lower surface opposite to each other, the upper surface of the base layer being in contact with a part of the top layer, and a part of the lower surface of the base layer being in contact with the transparent layer. This application has the characteristics of uniform light emission and good heat dissipation effect.

IPC Classes  ?

• F21K 9/232 - Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings specially adapted for generating an essentially omnidirectional light distribution, e.g. with a glass bulb
• F21K 9/238 - Arrangement or mounting of circuit elements integrated in the light source
• H01L 25/075 - Assemblies consisting of a plurality of individual semiconductor or other solid-state devices all the devices being of a type provided for in a single subclass of subclasses , , , , or , e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in group
• H01L 33/62 - Arrangements for conducting electric current to or from the semiconductor body, e.g. leadframe, wire-bond or solder balls
• H01L 33/50 - Wavelength conversion elements
• F21Y 115/10 - Light-emitting diodes [LED]

Abstract

An LED filament comprising: a plurality of LED chips electrically connected with one another; two conductive electrodes, each of the two conductive electrodes being electrically connected to a corresponding LED chip of the LED chips; a light conversion coating coated on the two conductive electrodes, a portion of each of the two conductive electrodes being exposed from the light conversion coating, wherein the light conversion coating comprises a top layer and a base layer, the base layer coats on one side of the LED chips, and the top layer coats on another sides of the LED chips, so that the light conversion coating is coated on at least two sides of the LED chips; and the top layer comprise a wave crest and a wave trough adjacent to the wave crest, and an attaching structure disposed either between the top layer and the base layer, or between the base layer and the conductive electrodes, or between the top layer and the conductive electrodes to enhance fastness between the light conversion coating and the two conductive electrodes.

IPC Classes  ?

• F21K 9/232 - Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings specially adapted for generating an essentially omnidirectional light distribution, e.g. with a glass bulb
• F21K 9/61 - Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction using light guides
• F21K 9/68 - Details of reflectors forming part of the light source
• F21V 23/06 - Arrangement of electric circuit elements in or on lighting devices the elements being coupling devices
• F21V 29/503 - Cooling arrangements characterised by the adaptation for cooling of specific components of light sources
• F21Y 107/70 - Light sources with three-dimensionally disposed light-generating elements on flexible or deformable supports or substrates, e.g. for changing the light source into a desired form
• F21Y 109/00 - Light sources with light-generating elements disposed on transparent or translucent supports or substrates
• F21Y 115/10 - Light-emitting diodes [LED]

Abstract

An LED light bulb includes a bulb shell, a bulb base, two conductive supports, a stem, and an LED filament. The bulb base is connected with the bulb shell. The two conductive supports are disposed in the bulb shell. The stem extends from the bulb base to inside of the bulb shell. The LED filament includes a plurality of LED chips and two conductive electrodes. The LED chips are arranged in an array along an elongated direction of the LED filament. The two conductive electrodes are respectively disposed at two ends of the LED filament and connected to the LED chips. The two conductive electrodes are respectively connected to the two conductive supports. The LED filament is curled to satisfy symmetry characteristics.

IPC Classes  ?

• F21K 9/232 - Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings specially adapted for generating an essentially omnidirectional light distribution, e.g. with a glass bulb
• H05B 45/00 - Circuit arrangements for operating light-emitting diodes [LED]
• F21Y 115/10 - Light-emitting diodes [LED]
• F21Y 107/00 - Light sources with three-dimensionally disposed light-generating elements
• F21Y 107/20 - Light sources with three-dimensionally disposed light-generating elements on convex supports or substrates, e.g. on the outer surface of spheres

Abstract

An LED tube lamp comprises a lamp tube; two groups of light boards arranged in the lamp tube, having a first light source and a second light source respectively; and two lamp caps, which are respectively arranged at both ends of the lamp tube. The two groups of the light boards are oppositely arranged in the lamp tube, so that the first light source and the second light source are arranged oppositely, and the light boards are fixed on the inner circumferential surface of the lamp tube.

IPC Classes  ?

• F21K 9/272 - Details of end parts, i.e. the parts that connect the light source to a fittingArrangement of components within end parts
• F21K 9/278 - Arrangement or mounting of circuit elements integrated in the light source
• F21V 23/02 - Arrangement of electric circuit elements in or on lighting devices the elements being transformers or impedances
• F21Y 107/50 - Light sources with three-dimensionally disposed light-generating elements on planar substrates or supports, but arranged in different planes or with differing orientation, e.g. on plate-shaped supports with steps on which light-generating elements are mounted
• F21Y 115/10 - Light-emitting diodes [LED]
• F21Y 103/10 - Elongate light sources, e.g. fluorescent tubes comprising a linear array of point-like light-generating elements

Abstract

An LED light bulb includes a bulb shell, a bulb base, two conductive supports, a stem, and an LED filament. The bulb base is connected with the bulb shell. The two conductive supports are disposed in the bulb shell. The stem extends from the bulb base to inside of the bulb shell. The LED filament includes a plurality of LED chips and two conductive electrodes. The LED chips are arranged in an array along an elongated direction of the LED filament. The two conductive electrodes are respectively disposed at two ends of the LED filament and connected to the LED chips. The two conductive electrodes are respectively connected to the two conductive supports. The LED filament is curled to satisfy symmetry characteristics.

IPC Classes  ?

• F21K 9/232 - Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings specially adapted for generating an essentially omnidirectional light distribution, e.g. with a glass bulb
• H05B 45/00 - Circuit arrangements for operating light-emitting diodes [LED]

Abstract

An LED light bulb includes a bulb shell, a bulb base, a stem, conductive supports, an LED filament, and a supporting arm. The bulb base is connected to the bulb shell. The stem is connected to the bulb base. The conductive supports are connected to the stem. The LED filament includes a filament body and two conductive electrodes. The conductive electrodes are at two ends of the filament body and connected to the conductive supports. The filament body is around the stem. The supporting arm is connected to the stem and the filament body. In a height direction of the LED light bulb, H is a distance from a bottom to a top of the bulb shell. A first height difference is defined between the two conductive electrodes and is from 0 to 1/10H. The filament body is curved to form a highest point and a lowest point. A second height difference is defined between the highest point and the lowest point. The first height difference is less than the second height difference.

IPC Classes  ?

• F21V 3/02 - GlobesBowlsCover glasses characterised by the shape
• F21V 9/00 - Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters
• F21K 9/237 - Details of housings or cases, i.e. the parts between the light-generating element and the basesArrangement of components within housings or cases
• F21K 9/232 - Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings specially adapted for generating an essentially omnidirectional light distribution, e.g. with a glass bulb
• F21K 9/235 - Details of bases or caps, i.e. the parts that connect the light source to a fittingArrangement of components within bases or caps
• F21V 29/70 - Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
• F21V 9/30 - Elements containing photoluminescent material distinct from or spaced from the light source
• F21K 9/238 - Arrangement or mounting of circuit elements integrated in the light source
• F21Y 115/10 - Light-emitting diodes [LED]
• F21K 9/90 - Methods of manufacture
• F21V 19/00 - Fastening of light sources or lamp holders
• H01L 23/00 - Details of semiconductor or other solid state devices
• H01L 25/075 - Assemblies consisting of a plurality of individual semiconductor or other solid-state devices all the devices being of a type provided for in a single subclass of subclasses , , , , or , e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in group
• F21Y 103/33 - Elongate light sources, e.g. fluorescent tubes curved annular
• F21Y 103/37 - U-shaped
• F21Y 107/00 - Light sources with three-dimensionally disposed light-generating elements
• F21V 3/06 - GlobesBowlsCover glasses characterised by materials, surface treatments or coatings characterised by the material

Abstract

An LED filament and an LED light bulb applying the same are provided. The LED filament includes a conductive section including a conductor; two or more LED sections connected to each other by the conductive section, and each of the LED sections includes two or more LED chips electrically connected to each other through a wire; two electrodes, electrically connected to the LED section; and a light conversion layer with a top layer and a base layer, covering the LED sections, the conductive section and the two electrodes, and a part of each of the two electrodes is exposed respectively. The LED filament is supplied with electric power no more than 8 W, when the LED filament is lit, at least 4 lm of white light is emitted per millimeter of filament length.

IPC Classes  ?

• F21K 9/232 - Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings specially adapted for generating an essentially omnidirectional light distribution, e.g. with a glass bulb
• H01L 25/075 - Assemblies consisting of a plurality of individual semiconductor or other solid-state devices all the devices being of a type provided for in a single subclass of subclasses , , , , or , e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in group
• H01L 33/50 - Wavelength conversion elements
• H01L 33/56 - Materials, e.g. epoxy or silicone resin
• H01L 33/62 - Arrangements for conducting electric current to or from the semiconductor body, e.g. leadframe, wire-bond or solder balls
• F21K 9/238 - Arrangement or mounting of circuit elements integrated in the light source
• F21Y 115/10 - Light-emitting diodes [LED]
• F21Y 103/30 - Elongate light sources, e.g. fluorescent tubes curved
• C08G 73/10 - PolyimidesPolyester-imidesPolyamide-imidesPolyamide acids or similar polyimide precursors
• C08J 5/18 - Manufacture of films or sheets

Abstract

An LED tube lamp comprises a lamp tube (1), two light boards (2) disposed in the lamp tube (1) having a plurality of light sources (21) mounted thereon, two lamp caps (3) respectively disposed at both ends of the lamp tube (1) and having a power supply (5) disposed in the lamp caps (3), and a support unit (6). The power supply (5) comprises a circuit board (51). The support unit (6) is configured to fix the light board (2) and comprises a main body (61) and a support arm (62). The support arm (62) is disposed on the main body (61) and abutted to the inner surface of the lamp tube (1), so that the support unit (6) can support the inner surface of the lamp tube (1).

IPC Classes  ?

• F21S 2/00 - Systems of lighting devices, not provided for in main groups or , e.g. of modular construction
• F21V 19/00 - Fastening of light sources or lamp holders

Abstract

An LED light bulb includes a bulb shell, a bulb base, two conductive supports, a stem, and an LED filament. The bulb base is connected with the bulb shell. The two conductive supports are disposed in the bulb shell. The stem extends from the bulb base to inside of the bulb shell. The LED filament includes a plurality of LED chips and two conductive electrodes. The LED chips are arranged in an array along an elongated direction of the LED filament. The two conductive electrodes are respectively disposed at two ends of the LED filament and connected to the LED chips. The two conductive electrodes are respectively connected to the two conductive supports. The LED filament is curled to satisfy symmetry characteristics.

IPC Classes  ?

• F21K 9/232 - Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings specially adapted for generating an essentially omnidirectional light distribution, e.g. with a glass bulb
• H05B 45/00 - Circuit arrangements for operating light-emitting diodes [LED]

Abstract

An LED filament and an LED light bulb applying the same are provided. The LED filament includes a conductive section including a conductor; two or more LED sections connected to each other by the conductive section, and each of the LED sections includes two or more LED chips electrically connected to each other through a wire; two electrodes, electrically connected to the LED section; and a light conversion layer with a top layer and a base layer, covering the LED sections, the conductive section and the two electrodes, and a part of each of the two electrodes is exposed respectively. The LED filament is supplied with electric power no more than 8 W, when the LED filament is lit, at least 4 lm of white light is emitted per millimeter of filament length.

IPC Classes  ?

• H01L 33/62 - Arrangements for conducting electric current to or from the semiconductor body, e.g. leadframe, wire-bond or solder balls
• F21K 9/232 - Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings specially adapted for generating an essentially omnidirectional light distribution, e.g. with a glass bulb
• H01L 25/075 - Assemblies consisting of a plurality of individual semiconductor or other solid-state devices all the devices being of a type provided for in a single subclass of subclasses , , , , or , e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in group
• H01L 23/00 - Details of semiconductor or other solid state devices
• H01L 33/50 - Wavelength conversion elements
• C09K 11/02 - Use of particular materials as binders, particle coatings or suspension media therefor
• F21Y 115/10 - Light-emitting diodes [LED]

Abstract

A light bulb, consisting of: a lamp housing doped with a golden yellow material or its surface coated with a yellow film; a bulb base connected to the lamp housing; a stem connected to the bulb base and located in the lamp housing, the stem comprises a stand extending to the center of the lamp housing; and a single LED filament, disposed in the lamp housing, the LED filament comprising: a plurality of LED sections, each of the LED sections includes at least two LED chips that are electrically connected to each other by a wire; a plurality of conductive sections, each of the conductive sections is located between the two adjacent LED sections and configured to electrically connect the two adjacent LED sections; a plurality of supporting arms, each of the supporting arms comprises a first end and a second end opposite to the first end of the supporting arms, the first end of each of the supporting arms is connected with the stand while the second end of each of the supporting arms is connected with the LED filament; the base layer of the light conversion layer is formed from organosilicon-modified polyimide resin composition comprising an organosilicon-modified polyimide and a thermal curing agent.

IPC Classes  ?

• F21K 9/61 - Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction using light guides
• F21K 9/232 - Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings specially adapted for generating an essentially omnidirectional light distribution, e.g. with a glass bulb
• F21V 15/04 - Resilient mountings, e.g. shock-absorbers
• H05B 33/08 - Circuit arrangements for operating electroluminescent light sources
• H01L 33/00 - SEMICONDUCTOR DEVICES NOT COVERED BY CLASS - Details thereof
• H05B 45/32 - Pulse-control circuits
• H05B 45/375 - Switched mode power supply [SMPS] using buck topology
• H05B 45/38 - Switched mode power supply [SMPS] using boost topology
• H05B 45/20 - Controlling the colour of the light
• H05B 45/00 - Circuit arrangements for operating light-emitting diodes [LED]
• F21Y 115/10 - Light-emitting diodes [LED]
• F21Y 107/70 - Light sources with three-dimensionally disposed light-generating elements on flexible or deformable supports or substrates, e.g. for changing the light source into a desired form
• H01L 33/50 - Wavelength conversion elements
• H01L 33/54 - Encapsulations having a particular shape
• H01L 33/62 - Arrangements for conducting electric current to or from the semiconductor body, e.g. leadframe, wire-bond or solder balls
• H05B 45/357 - Driver circuits specially adapted for retrofit LED light sources

Abstract

An light bulb, comprising: a bulb shell, a bulb base connected to the bulb shell; a stem connected to the bulb base and located in the bulb shell; and a flexible LED filament, disposed in the bulb shell, further comprising a plurality of supporting arms respectively comprising two ends, an end of each of the supporting arm is connected to the stem and another end of each of the supporting arm is connected to the flexible LED filament, wherein the stem comprises a stand extending to the center of the bulb shell, the stand supports the supporting arms.

IPC Classes  ?

• F21K 9/61 - Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction using light guides
• F21K 9/232 - Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings specially adapted for generating an essentially omnidirectional light distribution, e.g. with a glass bulb
• F21V 15/04 - Resilient mountings, e.g. shock-absorbers
• H05B 33/08 - Circuit arrangements for operating electroluminescent light sources
• H01L 33/00 - SEMICONDUCTOR DEVICES NOT COVERED BY CLASS - Details thereof
• H05B 45/00 - Circuit arrangements for operating light-emitting diodes [LED]
• F21Y 115/10 - Light-emitting diodes [LED]
• F21Y 107/70 - Light sources with three-dimensionally disposed light-generating elements on flexible or deformable supports or substrates, e.g. for changing the light source into a desired form
• H01L 33/50 - Wavelength conversion elements
• H01L 33/54 - Encapsulations having a particular shape
• H01L 33/62 - Arrangements for conducting electric current to or from the semiconductor body, e.g. leadframe, wire-bond or solder balls

Abstract

An LED filament light bulb, consisting of: a bulb shell doped with a golden yellow material or its surface coated with a yellow film; a bulb base connected to the bulb shell; a stem connected to the bulb base and located in the bulb shell, the stem comprises a stand extending to the center of the bulb shell; and a single filament, disposed in the light housing, further comprising a plurality of supporting arms, each of the supporting arms comprises a first end and a second end opposite to the first end of the supporting arms, the first end of each of the supporting arms is connected with the stand while the second end of each of the supporting arms is connected with the LED filament.

IPC Classes  ?

• F21K 9/61 - Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction using light guides
• F21K 9/232 - Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings specially adapted for generating an essentially omnidirectional light distribution, e.g. with a glass bulb
• F21V 15/04 - Resilient mountings, e.g. shock-absorbers
• H05B 33/08 - Circuit arrangements for operating electroluminescent light sources
• F21Y 115/10 - Light-emitting diodes [LED]
• H05B 45/00 - Circuit arrangements for operating light-emitting diodes [LED]

Abstract

An LED light bulb, comprising: a lamp housing, doped with a golden yellow material or coated with a yellow film on its surface, a bulb base, connected with the lamp housing, a stem with a stand extending to the center of the lamp housing, disposed in the lamp housing, LED filament disposed in the lamp housing, at least a half of the LED filament is around a center axle of the LED light bulb, where the center axle of the LED light bulb is coaxial with the axle of the stand. two conductive supports, connected with the stem and the LED filament, a driving circuit, electrically connected with both the conductive supports and the bulb base.

IPC Classes  ?

• F21K 9/232 - Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings specially adapted for generating an essentially omnidirectional light distribution, e.g. with a glass bulb
• F21K 9/61 - Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction using light guides
• F21V 15/04 - Resilient mountings, e.g. shock-absorbers
• H05B 33/08 - Circuit arrangements for operating electroluminescent light sources
• H01L 33/00 - SEMICONDUCTOR DEVICES NOT COVERED BY CLASS - Details thereof
• H05B 45/00 - Circuit arrangements for operating light-emitting diodes [LED]
• F21Y 115/10 - Light-emitting diodes [LED]
• F21Y 107/70 - Light sources with three-dimensionally disposed light-generating elements on flexible or deformable supports or substrates, e.g. for changing the light source into a desired form
• H01L 33/50 - Wavelength conversion elements
• H01L 33/54 - Encapsulations having a particular shape
• H01L 33/62 - Arrangements for conducting electric current to or from the semiconductor body, e.g. leadframe, wire-bond or solder balls

Abstract

An light bulb comprise a lamp housing filled with gas which doped with a golden yellow material or coated with a yellow film on its surface; a bulb base, connected with the lamp housing; a stem with a stand extending to the center of the lamp housing, disposed in the lamp housing; a LED filament disposed in the lamp housing, at least a half of the LED filament is around a center axle of the LED light bulb, where the center axle of the LED light bulb is coaxial with the axle of the stand, two conductive supports, respectively connected with the stem and the LED filament; a driving circuit, electrically connected with both the conductive supports and the bulb base.

IPC Classes  ?

• F21K 9/61 - Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction using light guides
• F21K 9/232 - Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings specially adapted for generating an essentially omnidirectional light distribution, e.g. with a glass bulb
• F21V 15/04 - Resilient mountings, e.g. shock-absorbers
• H05B 33/08 - Circuit arrangements for operating electroluminescent light sources
• H01L 33/00 - SEMICONDUCTOR DEVICES NOT COVERED BY CLASS - Details thereof
• H05B 45/00 - Circuit arrangements for operating light-emitting diodes [LED]
• F21Y 115/10 - Light-emitting diodes [LED]
• F21Y 107/70 - Light sources with three-dimensionally disposed light-generating elements on flexible or deformable supports or substrates, e.g. for changing the light source into a desired form
• H01L 33/50 - Wavelength conversion elements
• H01L 33/54 - Encapsulations having a particular shape
• H01L 33/62 - Arrangements for conducting electric current to or from the semiconductor body, e.g. leadframe, wire-bond or solder balls

Abstract

An LED light bulb, comprising: a bulb shell with inner surface and outer surface opposite to the inner surface of the bulb shell, the bulb shell includes a layer of luminescent material which is formed on the inner surface or the outer surface of the bulb shell or integrated in the material of the bulb shell; a bulb base connected to the bulb shell; a stem connected to the bulb base and located in the bulb shell, the stem comprises a stand extending to the center of the bulb shell; and a single LED filament, disposed in the bulb shell, the LED filament comprising: a plurality of LED chip units, each of the LED chip units comprises at least two LED chips; a plurality of conductors respectivity located on opposite sides of the LED chip units; wherein a Cartesian coordinate system having an x-axis, a y-axis is oriented for the LED filament where the x-axis is parallel to the length direction of the LED filament, the conductors are parallel to the x direction and at least one of the plurality of conductors is electrically connected with the LED chip units through a first wire perpendicular to the x direction.

IPC Classes  ?

• F21K 9/61 - Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction using light guides
• F21K 9/232 - Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings specially adapted for generating an essentially omnidirectional light distribution, e.g. with a glass bulb
• F21V 15/04 - Resilient mountings, e.g. shock-absorbers
• H05B 33/08 - Circuit arrangements for operating electroluminescent light sources
• H05B 45/00 - Circuit arrangements for operating light-emitting diodes [LED]
• F21Y 115/10 - Light-emitting diodes [LED]

Abstract

An LED light bulb, consisting of: a lamp housing with inner surface and outer surface opposite to the inner surface of the lamp housing, the lamp housing includes a layer of luminescent material which is formed on the inner surface or the outer surface of the lamp housing or integrated in the material of the lamp housing; a bulb base connected to the lamp housing; a stem connected to the bulb base and located in the lamp housing, the stem comprises a stand extending to the center of the lamp housing; and a single filament, disposed in the light housing, a plurality of supporting arms, each of the supporting arms comprises a first end and a second end opposite to the first end of the supporting arms, the first end of each of the supporting arms is connected with the stand while the second end of each of the supporting arms is connected with LED filament.

IPC Classes  ?

• F21K 9/61 - Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction using light guides
• F21K 9/232 - Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings specially adapted for generating an essentially omnidirectional light distribution, e.g. with a glass bulb
• F21V 15/04 - Resilient mountings, e.g. shock-absorbers
• H05B 33/08 - Circuit arrangements for operating electroluminescent light sources
• H05B 45/00 - Circuit arrangements for operating light-emitting diodes [LED]
• F21Y 115/10 - Light-emitting diodes [LED]

Abstract

An LED light bulb, comprising:a lamp housing, doped with a golden yellow material or coated with a yellow film on its surface,a bulb base, connected with the lamp housing, a stem with a stand extending to the center of the lamp housing, disposed in the lamp housing, a LED filament disposed in the lamp housing, at least a half of the LED filament is around a center axle of the LED light bulb, where the center axle of the LED light bulb is coaxial with the axle of the stand, two conductive supports, connected with the stem and the LED filament.

IPC Classes  ?

• F21K 9/232 - Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings specially adapted for generating an essentially omnidirectional light distribution, e.g. with a glass bulb
• F21K 9/61 - Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction using light guides
• F21V 15/04 - Resilient mountings, e.g. shock-absorbers
• H01L 33/00 - SEMICONDUCTOR DEVICES NOT COVERED BY CLASS - Details thereof
• H05B 45/20 - Controlling the colour of the light
• H05B 45/00 - Circuit arrangements for operating light-emitting diodes [LED]
• F21Y 115/10 - Light-emitting diodes [LED]
• F21Y 107/70 - Light sources with three-dimensionally disposed light-generating elements on flexible or deformable supports or substrates, e.g. for changing the light source into a desired form
• H01L 33/50 - Wavelength conversion elements
• H01L 33/54 - Encapsulations having a particular shape
• H01L 33/62 - Arrangements for conducting electric current to or from the semiconductor body, e.g. leadframe, wire-bond or solder balls
• H05B 45/32 - Pulse-control circuits
• H05B 45/375 - Switched mode power supply [SMPS] using buck topology
• H05B 45/38 - Switched mode power supply [SMPS] using boost topology
• H05B 45/357 - Driver circuits specially adapted for retrofit LED light sources

Abstract

An high-efficiency light bulb, comprising: a lamp housing with inner surface and outer surface opposite to the inner surface of the lamp housing, the lamp housing includes a layer of luminescent material, which is formed on the inner surface or the outer surface of the lamp housing or integrated in the material of the lamp housing; a bulb base connected to the lamp housing; a stem connected to the bulb base and located in the lamp housing; and a single filament, disposed in the light housing, further comprising a plurality of supporting arms, connected with and supporting the LED filament, wherein the stem comprises a stand extending to the center of the lamp housing, the stand supports the supporting arms.

IPC Classes  ?

• F21K 9/232 - Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings specially adapted for generating an essentially omnidirectional light distribution, e.g. with a glass bulb
• H05B 45/00 - Circuit arrangements for operating light-emitting diodes [LED]
• F21V 15/04 - Resilient mountings, e.g. shock-absorbers
• F21K 9/61 - Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction using light guides
• F21V 3/12 - GlobesBowlsCover glasses characterised by materials, surface treatments or coatings characterised by coatings the coatings comprising photoluminescent substances
• F21V 3/08 - GlobesBowlsCover glasses characterised by materials, surface treatments or coatings characterised by the material the material comprising photoluminescent substances
• F21Y 115/10 - Light-emitting diodes [LED]
• H05B 45/3577 - Emulating the dimming characteristics, brightness or colour temperature of incandescent lamps

Abstract

This present invention provides a Curved LED tubular lamp, comprising a Curved lamp tube as mentioned above, wherein the first straight tube has a first inner wall and a first outer wall opposite to the first inner wall along the longitudinal axis of the first straight tube, and the second straight tube has a second inner wall and a second outer wall opposite to the second inner wall along the longitudinal axis of the second straight tube, and the rear supporter has a third inner wall and a third outer wall opposite to the third inner wall along the axis of the rear supporter, whereby the first inner wall, the third inner wall and the second inner wall is defined as an inner area, and the first outer wall, the third outer wall and the second outer wall is defined as an outer area; a LED light board installed on the inner area of the Curved lamp tube; two lamp caps respectively capped on the front ends of the first straight tube and the second straight tube, and connected with each other by a first front supporter; and driving circuits formed inside the caps or on the LED light board and interconnected to the LED light board.

IPC Classes  ?

• F21V 23/00 - Arrangement of electric circuit elements in or on lighting devices
• F21V 3/06 - GlobesBowlsCover glasses characterised by materials, surface treatments or coatings characterised by the material
• F21K 9/272 - Details of end parts, i.e. the parts that connect the light source to a fittingArrangement of components within end parts
• F21V 29/85 - Protecting lighting devices from thermal damageCooling or heating arrangements specially adapted for lighting devices or systems characterised by the material
• F21V 7/00 - Reflectors for light sources
• F21V 15/015 - Devices for covering joints between adjacent lighting devicesEnd coverings
• F21V 17/10 - Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening
• F21V 25/02 - Safety devices structurally associated with lighting devices coming into action when lighting device is disturbed, dismounted, or broken
• F21Y 103/37 - U-shaped
• F21Y 107/70 - Light sources with three-dimensionally disposed light-generating elements on flexible or deformable supports or substrates, e.g. for changing the light source into a desired form
• F21Y 103/10 - Elongate light sources, e.g. fluorescent tubes comprising a linear array of point-like light-generating elements
• F21Y 115/10 - Light-emitting diodes [LED]

Abstract

An LED filament light bulb, comprising: a lamp housing with inner surface and outer surface opposite to the inner surface of the lamp housing, the lamp housing includes a layer of luminescent material, which is formed on the inner surface or the outer surface of the lamp housing or integrated in the material of the lamp housing; a bulb base connected to the lamp housing; a stem connected to the bulb base and located in the lamp housing; and a single filament, disposed in the light housing, the LED filament comprising: a plurality of LED filament units, wherein each of the plurality of LED filament units includes a single LED chip with an upper surface and a lower surface opposite to the upper surface. The LED filament light bulb further comprising a plurality of supporting arms, connected with and supporting the LED filament, wherein the stem comprises a stand extending to the center of the lamp housing, the stand supports the supporting arms.

IPC Classes  ?

• F21K 9/61 - Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction using light guides
• F21K 9/232 - Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings specially adapted for generating an essentially omnidirectional light distribution, e.g. with a glass bulb
• F21V 15/04 - Resilient mountings, e.g. shock-absorbers
• H05B 33/08 - Circuit arrangements for operating electroluminescent light sources
• H05B 45/00 - Circuit arrangements for operating light-emitting diodes [LED]
• F21Y 115/10 - Light-emitting diodes [LED]

Abstract

An light bulb, comprising: a lamp housing with inner surface and outer surface opposite to the inner surface of the lamp housing, the lamp housing includes a layer of luminescent material, which is formed on the inner surface or the outer surface of the lamp housing or integrated in the material of the lamp housing; a bulb base connected to the lamp housing; a stem connected to the bulb base and located in the lamp housing; and a single filament, disposed in the light housing.

IPC Classes  ?

• F21K 9/61 - Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction using light guides
• F21K 9/232 - Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings specially adapted for generating an essentially omnidirectional light distribution, e.g. with a glass bulb
• F21V 15/04 - Resilient mountings, e.g. shock-absorbers
• H05B 33/08 - Circuit arrangements for operating electroluminescent light sources
• H01L 33/00 - SEMICONDUCTOR DEVICES NOT COVERED BY CLASS - Details thereof
• H05B 45/00 - Circuit arrangements for operating light-emitting diodes [LED]
• F21Y 115/10 - Light-emitting diodes [LED]
• F21Y 107/70 - Light sources with three-dimensionally disposed light-generating elements on flexible or deformable supports or substrates, e.g. for changing the light source into a desired form
• H01L 33/50 - Wavelength conversion elements
• H01L 33/54 - Encapsulations having a particular shape
• H01L 33/62 - Arrangements for conducting electric current to or from the semiconductor body, e.g. leadframe, wire-bond or solder balls

Abstract

An LED filament includes LED chips, two conductive electrodes, and an enclosure. The LED chips are arranged in an array along an axial direction of the LED filament and are electrically connected with one another. The two conductive electrodes are disposed corresponding to the array. Each of the two conductive electrodes is electrically connected to a corresponding LED chip at an end of the array. The enclosure is coated on two or more sides of the array and the two conductive electrodes. A portion of each of the two conductive electrodes is exposed from the enclosure. An axis of the LED filament is parallel with the axial direction, and a radial direction of the LED filament is perpendicular to the axial direction. Postures of at least a part of the LED chips related to an axis are different from each other on the radial direction.

IPC Classes  ?

• F21K 9/232 - Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings specially adapted for generating an essentially omnidirectional light distribution, e.g. with a glass bulb
• F21K 9/68 - Details of reflectors forming part of the light source
• F21V 23/06 - Arrangement of electric circuit elements in or on lighting devices the elements being coupling devices
• F21K 9/61 - Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction using light guides
• F21Y 115/10 - Light-emitting diodes [LED]
• F21V 29/503 - Cooling arrangements characterised by the adaptation for cooling of specific components of light sources
• F21Y 107/70 - Light sources with three-dimensionally disposed light-generating elements on flexible or deformable supports or substrates, e.g. for changing the light source into a desired form
• F21Y 109/00 - Light sources with light-generating elements disposed on transparent or translucent supports or substrates

Abstract

An LED light bulb includes a bulb shell, a bulb base, a stem, conductive supports, an LED filament, and a supporting arm. The bulb base is connected to the bulb shell. The stem is connected to the bulb base. The conductive supports are connected to the stem. The LED filament includes a filament body and two conductive electrodes. The conductive electrodes are at two ends of the filament body and connected to the conductive supports. The filament body is around the stem. The supporting arm is connected to the stem and the filament body. In a height direction of the LED light bulb, H is a distance from a bottom to a top of the bulb shell. A first height difference is defined between the two conductive electrodes and is from 0 to 1/10H. The filament body is curved to form a highest point and a lowest point. A second height difference is defined between the highest point and the lowest point. The first height difference is less than the second height difference.

IPC Classes  ?

• H01L 27/15 - Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components with at least one potential-jump barrier or surface barrier, specially adapted for light emission
• H01L 27/32 - Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including components using organic materials as the active part, or using a combination of organic materials with other materials as the active part with components specially adapted for light emission, e.g. flat-panel displays using organic light-emitting diodes
• F21K 9/237 - Details of housings or cases, i.e. the parts between the light-generating element and the basesArrangement of components within housings or cases
• F21K 9/232 - Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings specially adapted for generating an essentially omnidirectional light distribution, e.g. with a glass bulb
• F21V 3/02 - GlobesBowlsCover glasses characterised by the shape
• F21K 9/235 - Details of bases or caps, i.e. the parts that connect the light source to a fittingArrangement of components within bases or caps
• F21V 29/70 - Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
• F21V 9/30 - Elements containing photoluminescent material distinct from or spaced from the light source
• F21K 9/238 - Arrangement or mounting of circuit elements integrated in the light source
• F21Y 115/10 - Light-emitting diodes [LED]
• F21K 9/90 - Methods of manufacture
• F21V 19/00 - Fastening of light sources or lamp holders
• H01L 23/00 - Details of semiconductor or other solid state devices
• H01L 25/075 - Assemblies consisting of a plurality of individual semiconductor or other solid-state devices all the devices being of a type provided for in a single subclass of subclasses , , , , or , e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in group
• F21Y 103/33 - Elongate light sources, e.g. fluorescent tubes curved annular
• F21Y 103/37 - U-shaped
• F21Y 107/00 - Light sources with three-dimensionally disposed light-generating elements
• F21V 3/06 - GlobesBowlsCover glasses characterised by materials, surface treatments or coatings characterised by the material

Abstract

An LED filament comprises at least one LED section, a conductive section, two conductive electrodes and a light conversion layer. The conductive section is used to electrically connect two adjacent LED sections. The two conductive electrodes are electrically connected to each of the LED sections. Each of the LED sections includes at least two LED chips electrically connected to each other. The light conversion layer covers the LED sections, the conductive sections and the conductive electrodes, and a part of the two electrodes is exposed respectively. Since the LED filament includes the LED section and the conductive section, when the LED filament is bent, the stress is easily concentrated on the conductive section. Therefore, the breakage probability of the conductive wires connected within the LED section is reduced during bending. The quality of the LED filament and its application is improved.

IPC Classes  ?

• F21K 9/232 - Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings specially adapted for generating an essentially omnidirectional light distribution, e.g. with a glass bulb
• H01L 33/00 - SEMICONDUCTOR DEVICES NOT COVERED BY CLASS - Details thereof
• H05B 45/00 - Circuit arrangements for operating light-emitting diodes [LED]
• F21Y 115/10 - Light-emitting diodes [LED]
• F21Y 107/70 - Light sources with three-dimensionally disposed light-generating elements on flexible or deformable supports or substrates, e.g. for changing the light source into a desired form
• H01L 33/50 - Wavelength conversion elements
• H01L 33/54 - Encapsulations having a particular shape
• H01L 33/62 - Arrangements for conducting electric current to or from the semiconductor body, e.g. leadframe, wire-bond or solder balls
• F21K 9/61 - Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction using light guides
• F21V 15/04 - Resilient mountings, e.g. shock-absorbers

Abstract

An LED filament includes LED chips, two conductive electrodes, and an enclosure. The LED chips are arranged in an array along an axial direction of the LED filament and are electrically connected with one another. The two conductive electrodes are disposed corresponding to the array. Each of the two conductive electrodes is electrically connected to a corresponding LED chip at an end of the array. The enclosure is coated on two or more sides of the array and the two conductive electrodes. A portion of each of the two conductive electrodes is exposed from the enclosure. Postures of two or more of the LED chips related to an axis of the LED filament along the axial direction or related to a horizontal plane the LED filament is laid on are different from each other.

IPC Classes  ?

• F21K 9/232 - Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings specially adapted for generating an essentially omnidirectional light distribution, e.g. with a glass bulb
• F21K 9/68 - Details of reflectors forming part of the light source
• F21V 23/06 - Arrangement of electric circuit elements in or on lighting devices the elements being coupling devices
• F21K 9/61 - Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction using light guides
• F21Y 115/10 - Light-emitting diodes [LED]
• F21V 29/503 - Cooling arrangements characterised by the adaptation for cooling of specific components of light sources
• F21Y 107/70 - Light sources with three-dimensionally disposed light-generating elements on flexible or deformable supports or substrates, e.g. for changing the light source into a desired form
• F21Y 109/00 - Light sources with light-generating elements disposed on transparent or translucent supports or substrates

Abstract

An LED filament includes LED chips, two conductive electrodes, light conversion coating, and attaching structure. The LED chips are electrically connected with one another. Each of the two conductive electrodes is electrically connected to a corresponding LED chip of the LED chips. The light conversion coating is coated on two sides of the LED chips and the two conductive electrodes. A portion of each of the two conductive electrodes is exposed from the light conversion coating. The light conversion coating includes a top layer and a base layer. The base layer coats on one side of the LED chips, and the top layer coats on another sides of the LED chips. The attaching structure is between the top layer and the base layer, between the base layer and the conductive electrodes, or between the top layer and the conductive electrodes.

IPC Classes  ?

• F21K 9/232 - Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings specially adapted for generating an essentially omnidirectional light distribution, e.g. with a glass bulb
• F21K 9/68 - Details of reflectors forming part of the light source
• F21V 23/06 - Arrangement of electric circuit elements in or on lighting devices the elements being coupling devices
• F21K 9/61 - Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction using light guides
• F21Y 115/10 - Light-emitting diodes [LED]
• F21V 29/503 - Cooling arrangements characterised by the adaptation for cooling of specific components of light sources
• F21Y 107/70 - Light sources with three-dimensionally disposed light-generating elements on flexible or deformable supports or substrates, e.g. for changing the light source into a desired form
• F21Y 109/00 - Light sources with light-generating elements disposed on transparent or translucent supports or substrates

Abstract

An LED light bulb includes a bulb shell, a bulb base, two conductive supports, a stem, and an LED filament. The bulb base is connected with the bulb shell. The two conductive supports are disposed in the bulb shell. The stem extends from the bulb base to inside of the bulb shell. The LED filament includes a plurality of LED chips and two conductive electrodes. The LED chips are arranged in an array along an elongated direction of the LED filament. The two conductive electrodes are respectively disposed at two ends of the LED filament and connected to the LED chips. The two conductive electrodes are respectively connected to the two conductive supports. The LED filament is curled to satisfy symmetry characteristics. Brightness presented by portions of the LED filament in different quadrants in a top view or in a side view is in line symmetry or in point symmetry.

IPC Classes  ?

• F21K 9/232 - Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings specially adapted for generating an essentially omnidirectional light distribution, e.g. with a glass bulb
• H05B 33/08 - Circuit arrangements for operating electroluminescent light sources

Abstract

An LED filament includes LED chips in an array, two conductive electrodes, conductive wires, an enclosure coating, and an auxiliary piece. The chips are connected with one another. The electrodes are corresponding to the chips. Each electrode is connected to a corresponding LED chip at an end of the array. The wires connect the chips and the electrodes. The wires are respectively between every two adjacent chips and between each of the electrodes and the corresponding chip at an end of the array. The coating is on two or more sides of the array and the two electrodes. A portion of each of the electrodes is exposed from the coating. The auxiliary piece is in the coating and overlaps one of the wires between each of the electrodes and the corresponding one of the two chips respectively at two ends of the array on a radial direction of the filament.

IPC Classes  ?

• F21K 9/232 - Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings specially adapted for generating an essentially omnidirectional light distribution, e.g. with a glass bulb
• F21K 9/68 - Details of reflectors forming part of the light source
• F21V 23/06 - Arrangement of electric circuit elements in or on lighting devices the elements being coupling devices
• F21K 9/61 - Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction using light guides
• F21Y 115/10 - Light-emitting diodes [LED]
• F21V 29/503 - Cooling arrangements characterised by the adaptation for cooling of specific components of light sources
• F21Y 107/70 - Light sources with three-dimensionally disposed light-generating elements on flexible or deformable supports or substrates, e.g. for changing the light source into a desired form
• F21Y 109/00 - Light sources with light-generating elements disposed on transparent or translucent supports or substrates

Abstract

A curved LED tubular lamp is disclosed. The curved LED tubular lamp includes a curved lamp tube having two straight segments and a curve segment disposed between the two straight segments; at least one flexible substrate having a plurality of LEDs mounted thereon, and at least one positioning pillar formed on the inner surface of the curve segment of the curved lamp tube, wherein each of the two straight segments and the curve segment have LEDs disposed therein, and wherein the flexible substrate is disposed in at least the curve segment.

IPC Classes  ?

• F21V 3/06 - GlobesBowlsCover glasses characterised by materials, surface treatments or coatings characterised by the material
• F21V 7/00 - Reflectors for light sources
• F21K 9/272 - Details of end parts, i.e. the parts that connect the light source to a fittingArrangement of components within end parts
• F21V 17/10 - Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening
• F21V 23/00 - Arrangement of electric circuit elements in or on lighting devices
• F21V 25/02 - Safety devices structurally associated with lighting devices coming into action when lighting device is disturbed, dismounted, or broken
• F21V 29/85 - Protecting lighting devices from thermal damageCooling or heating arrangements specially adapted for lighting devices or systems characterised by the material
• F21V 15/015 - Devices for covering joints between adjacent lighting devicesEnd coverings
• F21Y 103/10 - Elongate light sources, e.g. fluorescent tubes comprising a linear array of point-like light-generating elements
• F21Y 103/37 - U-shaped
• F21Y 107/70 - Light sources with three-dimensionally disposed light-generating elements on flexible or deformable supports or substrates, e.g. for changing the light source into a desired form
• F21Y 115/10 - Light-emitting diodes [LED]

Abstract

An LED filament, comprising: an enclosure; a linear array of LED devices; and an electrical connector, wherein: the enclosure includes an optically transmissive binder; and the linear of LED devices is conformally wrapped around by the enclosure to be operable to emit light when energized through the electrical connector.

IPC Classes  ?

• F21K 9/232 - Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings specially adapted for generating an essentially omnidirectional light distribution, e.g. with a glass bulb
• F21K 9/238 - Arrangement or mounting of circuit elements integrated in the light source
• F21V 3/02 - GlobesBowlsCover glasses characterised by the shape
• H01L 23/00 - Details of semiconductor or other solid state devices
• F21Y 115/10 - Light-emitting diodes [LED]
• F21Y 103/10 - Elongate light sources, e.g. fluorescent tubes comprising a linear array of point-like light-generating elements
• F21K 9/90 - Methods of manufacture
• F21V 19/00 - Fastening of light sources or lamp holders
• H01L 25/075 - Assemblies consisting of a plurality of individual semiconductor or other solid-state devices all the devices being of a type provided for in a single subclass of subclasses , , , , or , e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in group
• F21Y 103/33 - Elongate light sources, e.g. fluorescent tubes curved annular
• F21Y 103/37 - U-shaped
• F21Y 107/00 - Light sources with three-dimensionally disposed light-generating elements
• F21V 3/06 - GlobesBowlsCover glasses characterised by materials, surface treatments or coatings characterised by the material

Abstract

An LED light bulb includes a bulb shell, a bulb base, a stem, conductive supports, an LED filament, and a supporting arm. The bulb base is connected to the bulb shell. The stem is connected to the bulb base. The conductive supports are connected to the stem. The LED filament includes a filament body and two conductive electrodes. The conductive electrodes are at two ends of the filament body and connected to the conductive supports. The filament body is around the stem. The supporting arm is connected to the stem and the filament body. In a height direction of the LED light bulb, H is a distance from a bottom to a top of the bulb shell. A first height difference is defined between the two conductive electrodes and is from 0 to 1/10H. The filament body is curved to form a highest point and a lowest point. A second height difference is defined between the highest point and the lowest point. The first height difference is less than the second height difference.

IPC Classes  ?

• H01L 27/15 - Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components with at least one potential-jump barrier or surface barrier, specially adapted for light emission
• H01L 27/32 - Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including components using organic materials as the active part, or using a combination of organic materials with other materials as the active part with components specially adapted for light emission, e.g. flat-panel displays using organic light-emitting diodes
• F21K 9/237 - Details of housings or cases, i.e. the parts between the light-generating element and the basesArrangement of components within housings or cases
• F21K 9/232 - Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings specially adapted for generating an essentially omnidirectional light distribution, e.g. with a glass bulb
• F21V 3/02 - GlobesBowlsCover glasses characterised by the shape
• F21K 9/235 - Details of bases or caps, i.e. the parts that connect the light source to a fittingArrangement of components within bases or caps
• F21V 29/70 - Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
• F21V 9/30 - Elements containing photoluminescent material distinct from or spaced from the light source
• F21Y 115/10 - Light-emitting diodes [LED]

Abstract

An LED filament configured to emit omnidirectional light includes a linear array of LED chips operably interconnected to emit light upon energization and a conductive electrode. The linear array of LED chips is electrically connected with the conductive electrode. A light conversion coating encloses the linear array of the LED chip and the conductive electrode. The light conversion layer includes a top layer and a base layer conformally interconnected to form a unitary enclosure. The top layer is coated on a first side of the linear array of LED chips and the conductive electrode. The base layer is coated on a second side of the linear array of LED chips and the conductive electrode.

IPC Classes  ?

• F21K 9/232 - Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings specially adapted for generating an essentially omnidirectional light distribution, e.g. with a glass bulb
• H01L 33/62 - Arrangements for conducting electric current to or from the semiconductor body, e.g. leadframe, wire-bond or solder balls
• F21V 3/02 - GlobesBowlsCover glasses characterised by the shape
• F21K 9/238 - Arrangement or mounting of circuit elements integrated in the light source
• H01L 25/075 - Assemblies consisting of a plurality of individual semiconductor or other solid-state devices all the devices being of a type provided for in a single subclass of subclasses , , , , or , e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in group
• F21Y 115/10 - Light-emitting diodes [LED]
• F21V 3/06 - GlobesBowlsCover glasses characterised by materials, surface treatments or coatings characterised by the material
• F21Y 107/50 - Light sources with three-dimensionally disposed light-generating elements on planar substrates or supports, but arranged in different planes or with differing orientation, e.g. on plate-shaped supports with steps on which light-generating elements are mounted
• F21K 9/90 - Methods of manufacture
• F21V 19/00 - Fastening of light sources or lamp holders
• F21Y 103/33 - Elongate light sources, e.g. fluorescent tubes curved annular
• F21Y 103/37 - U-shaped
• F21Y 107/00 - Light sources with three-dimensionally disposed light-generating elements

Abstract

An LED filament module and an LED light bulb are disclosed. The LED filament module includes one or more LED filaments, a first connecting portion, and a second connecting portion. The LED filaments are spaced from each other. Each of the LED filaments includes a first conductive electrode and a second conductive electrode opposite to the first conductive electrode. The first connecting portion is connected with the first conductive electrodes. The second connecting portion is connected with the second conductive electrodes. The LED filament module has a first type. The LED filaments, the first connecting portion, and the second connecting portion of the first type are in a three dimensional form. One or two between the first connecting portion and the second connecting portion of the first type has a torus shape.

IPC Classes  ?

• F21K 9/232 - Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings specially adapted for generating an essentially omnidirectional light distribution, e.g. with a glass bulb
• F21V 3/02 - GlobesBowlsCover glasses characterised by the shape
• F21K 9/238 - Arrangement or mounting of circuit elements integrated in the light source
• H01L 25/075 - Assemblies consisting of a plurality of individual semiconductor or other solid-state devices all the devices being of a type provided for in a single subclass of subclasses , , , , or , e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in group
• H01L 33/62 - Arrangements for conducting electric current to or from the semiconductor body, e.g. leadframe, wire-bond or solder balls
• H01L 33/50 - Wavelength conversion elements
• H01L 33/56 - Materials, e.g. epoxy or silicone resin
• F21Y 115/10 - Light-emitting diodes [LED]
• F21V 3/06 - GlobesBowlsCover glasses characterised by materials, surface treatments or coatings characterised by the material
• F21K 9/90 - Methods of manufacture
• F21V 19/00 - Fastening of light sources or lamp holders
• F21Y 103/33 - Elongate light sources, e.g. fluorescent tubes curved annular
• F21Y 103/37 - U-shaped
• F21Y 107/00 - Light sources with three-dimensionally disposed light-generating elements
• H01L 33/54 - Encapsulations having a particular shape

Abstract

a) electrically isolates the LED lamp substrate's charged part from outside of the LED lamp substrate (5). The LED lamp bulb can protect user from contacting the charged part inside the lamp housing (7) when the LED lamp bulb is broken and thereby avoid electric shock accidents. In addition, the directions of the light emitted by the LED light sources (51) can be changed to achieve different kinds of lighting effects.

IPC Classes  ?

• F21V 1/00 - Shades for light sources
• F21K 9/232 - Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings specially adapted for generating an essentially omnidirectional light distribution, e.g. with a glass bulb
• F21V 25/00 - Safety devices structurally associated with lighting devices
• F21K 9/238 - Arrangement or mounting of circuit elements integrated in the light source
• F21K 9/237 - Details of housings or cases, i.e. the parts between the light-generating element and the basesArrangement of components within housings or cases
• F21V 3/02 - GlobesBowlsCover glasses characterised by the shape
• F21V 7/22 - Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors
• F21Y 115/10 - Light-emitting diodes [LED]
• F21Y 105/12 - Planar light sources comprising a two-dimensional array of point-like light-generating elements characterised by the geometrical disposition of the light-generating elements, e.g. arranging light-generating elements in differing patterns or densities

Abstract

An LED filament (100) and an LED light bulb (10a, 10b, 10c) applying the same are disclosed. The LED filament (100) includes LED chips (102, 104), conductive electrodes (110, 112) disposed corresponding to the LED chips (102, 104), and a light conversion coating (120). The LED chips (102, 104) are electrically connected together and the conductive electrodes (110, 112) are electrically connected with the LED chips (102, 104). The light conversion coating (120) includes an adhesive (122) and a plurality of phosphors (124). The light conversion coating (120) coats on at least two sides of the LED chips (102, 104) and the conductive electrodes (110, 112). The light conversion coating (120) exposes a portion of two of the conductive electrodes (110, 112). Accordingly, the LED filament (100) is capable of emitting light similar to that a point light source does and the LED light bulb (10a, 10b, 10c) may emit omnidirectional light.

IPC Classes  ?

• F21V 19/00 - Fastening of light sources or lamp holders
• F21S 2/00 - Systems of lighting devices, not provided for in main groups or , e.g. of modular construction

Abstract

A LED filament (11) includes a frame (115); two metal electrodes (112), respectively disposed on two sides of the frame (115); a LED chip assembly, comprising a plurality of LED chips (111) disposed inside the frame (115) and electrically connecting to the two metal electrodes (112) respectively; and a gel (114) comprising phosphor, wrapping the LED chip assembly and parts of the metal electrodes (112) inside the frame (115).

IPC Classes  ?

• F21S 4/00 - Lighting devices or systems using a string or strip of light sources