An LED lamp arrangement (100) for replacing a fluorescent lamp in a luminaire having an electronic ballast. The LED lamp arrangement (100) has a plurality of LEDs (101, 102, 103), an SVM reduction circuit (110) having an energy storage device connected across the plurality of LEDs (101, 102, 103), and a measurement and control circuit (120) adapted to measure the current drawn from the electronic ballast and generate an output to the SVM reduction circuit (110). Based on said output, the measurement and control circuit (130) is configured to activate the SVM reduction circuit (110) when the current drawn from the electronic ballast exceeds a threshold, and deactivate the SVM reduction circuit (110) when the current drawn from the electronic ballast does not exceed the threshold.
LED lamp assembly comprising a safety switch, comprising a plurality of connector pins arranged at first and second ends of the LED lamp assembly, a plurality of rectifier circuits, one or more LEDs coupled to receive electrical power from the rectifier circuits, a safety switch control circuit operatively coupled to the safety switch, and a filter circuit comprising first and second filter elements. The safety switch comprises a first switch element coupled in series with the first filter element and a second switch element coupled in series with the second filter element, the safety switch coupled for supplying electrical power to a first one of the rectifier circuits. The safety switch control circuit is arranged to close the safety switch when the safety switch control circuit detects electrical power at the connector pins arranged at both the first and second ends of the LED lamp assembly.
H05B 45/50 - Circuits pour faire fonctionner des diodes électroluminescentes [LED] réagissant aux dysfonctionnements des LED ou à un comportement indésirable des LEDCircuits pour faire fonctionner des diodes électroluminescentes [LED] sensibles à la vie des LEDCircuits de protection
H05B 47/105 - Commande de la source lumineuse en réponse à des paramètres détectés
H05B 47/20 - Circuits pour faire fonctionner des sources lumineuses en général, c.-à-d. où le type de source lumineuse n'est pas important réagissant aux dysfonctionnements ou à la durée de fonctionnementCircuits pour faire fonctionner des sources lumineuses en général, c.-à-d. où le type de source lumineuse n'est pas important pour la protection
H05B 45/3578 - Émulation des caractéristiques électriques ou fonctionnelles des lampes à décharge
H05B 47/26 - Circuits de protection contre les défauts de terre
An TLED lamp arrangement (1) for replacing a fluorescent lamp in a luminaire (2), having a plurality of connector pins (3), a plurality of LEDs (14a, 14b) electrically connected in a plurality of groups (15, 16); a switching circuit (20) comprising a first switch (21) for switching the LED groups (15, 16) between different circuit configurations according to a duty cycle at a switching frequency of at least 150 kHz; and an elongated circuit board (102) on which the plurality of LED groups are mounted. The first LEDs (14a) and second LEDs (14b) are colinearly and altematingly arranged in a linear array along the midline (C) of the circuit board (102) or are arranged in respective first and second linear arrays that extend mutually parallel along the midline of the circuit board (102) and with first and second LEDs paired in transverse patterns.
H05B 45/357 - Circuits de commande spécialement adaptés aux sources lumineuses LED rétro-compatibles
H05B 45/48 - Détails des circuits de charge à LED avec un contrôle actif à l'intérieur d'une matrice de LED ayant des LED organisées en chaînes et comportant des dispositifs de dérivation parallèles
4.
DRIVER CIRCUIT FOR PHOTOBIOMODULATION IN LED GENERAL LIGHTING
A driver circuit (12) for driving an LED general lighting apparatus, having a transformer with a primary winding (5) and two secondary windings (6, 7) for providing a first and second driving currents (101, 111) to an LED radiation source (10) and an LED light source (11), respectively; an energy storage circuit (23; 23a); a switching circuit (24; 24a; 24b); and a timer circuit (25) for generating one or more output signals which vary periodically over time. The switching circuit (24; 24a; 24b) is configured to switch the energy storage circuit (23; 23a) between a plurality of states during operation, including at least a charging state, a discharging state, and an idle state, in dependence on the one or more output signals of the timer circuit (25), such that the first driving current (101) is pulsed according to one or more duty cycles.
An LED lamp (1) for use in a luminaire (2), the LED lamp (1) comprising a plurality of LEDs (14) connected in a plurality of groups (15, 16); one or more rectifier circuits (10, 10a, 10b) adapted for rectifying an electrical current received from the luminaire (2) for supply to the LEDs (14); a first control circuit (24) adapted to estimate electrical current or electrical power received by or used by the LED lamp (1), and adapted to generate an output on the basis of the estimate; and a switching circuit (20) comprising a first switch (21) for switching the plurality of groups of LEDs (15, 16) between a plurality of different circuit configurations at a switching frequency of at least 300 kHz and according to a duty cycle; wherein the switching circuit (20) is configured to adjust the duty cycle in dependence on the output of the first control circuit (24) to adjust the electrical power used by the LED lamp (1).
LED lamp for use in a luminaire, the LED lamp adapted for receiving electrical power from the luminaire and comprising: one or more LEDs; a first power supply circuit comprising a ballast protection circuit including an impedance, connectable for receiving electrical power from the luminaire and for supplying it to the LEDs; a second power supply circuit comprising a filter circuit and switched-mode power supply, connectable for receiving electrical power from the luminaire and for supplying it to the LEDs; and a switching circuit connected for sensing the electrical power and switching operation modes in dependence on whether the electrical power indicates that the electrical power is provided via a magnetic ballast, an electronic ballast which operates as a constant current ballast, an electronic ballast which operates as a constant power ballast, or not via a ballast, wherein the operation modes comprise a first mode in which the second power supply circuit is connected for supplying power to the LEDs and the first power supply circuit is not connected for supplying power; and a second mode in which the first power supply circuit is connected for supplying power to the LEDs and the second power supply circuit is not connected for supplying power.
A safety endcap assembly (25, 200) to be arranged at an end of an LED lamp (1). It has an endcap base element (201), an endcap cover element (203), a connector pin (205, 207), a contact element (217, 219) for connecting to the connector pin (205, 207) to LEDs, and a switch button (213). The endcap cover element (203) is moveable between a protracted position and a retracted position, and the switch button (213) is moveable between a first position and a second position. The switch button (213) is arranged to disconnect contact element (217, 219) from the LEDs when the switch button (213) is in the first position. The safety endcap assembly further has a switch opening mechanism configured to move the switch button to the first position when a certain condition is met.
F21V 25/04 - Dispositifs de sécurité associés structuralement avec les dispositifs d'éclairage entrant en action quand le dispositif d'éclairage est dérangé, démonté ou cassé ouvrant le circuit électrique
F21V 23/04 - Agencement des éléments du circuit électrique dans ou sur les dispositifs d’éclairage les éléments étant des interrupteurs
F21V 23/06 - Agencement des éléments du circuit électrique dans ou sur les dispositifs d’éclairage les éléments étant des dispositifs de couplage
H01H 3/20 - Organes moteurs, c.-à-d. pour actionner le mécanisme d'entraînement par une force mécanique extérieure à l'interrupteur dans lesquels un mouvement auxiliaire des pièces, ou d'un accessoire, est nécessaire avant que le mouvement principal ne devienne possible ou effectif, p. ex. pour un déverrouillage, un couplage
H01R 13/44 - Moyens pour empêcher l'accès aux contacts actifs
F21K 9/272 - Détails des parties d’extrémité, c.-à-d. les parties qui relient la source lumineuse à un culotAgencement des composants à l’intérieur des parties d’extrémité
F21Y 103/10 - Sources lumineuses de forme allongée, p. ex. tubes fluorescents comprenant un réseau linéaire d’éléments générateurs de lumière ponctuelle
An LED lamp arrangement adapted to replace a fluorescent lamp in a luminaire. The LED lamp arrangement has a plurality of LEDs and a first control circuit connected in parallel with the plurality of LEDs. The first control circuit is arranged to switch on and switch off the plurality of LEDs without the use of the wall switch. The first control circuit has a plurality of impedances. The LED lamp arrangement is arranged to switch the plurality of impedances among a plurality of control-circuit configurations in dependence on whether the ballast is a magnetic ballast or a non-magnetic ballast.
An LED lamp arrangement (1 ) for replacing a fluorescent lamp suitable to be energized by a magnet ballast or an electronic ballast. The LED lamp arrangement has a rectifier circuit (4, 5) and an LED circuit (8) having a plurality of groups of LEDs (9, 10, 11,12, 13) switchable between at least a first circuit configuration and a second circuit configuration. The LED lamp arrangement further has an auxiliary circuit (31 ), which defines a conductive path connected in parallel with the plurality of groups of LEDs in the second circuit configuration. The LED lamp arrangement (1 ) is arranged to bypass the groups of LEDs and charges a capacitor (39) in the conductive path when the LED lamp arrangement 1 receives the series of bursts, and to discharge the capacitor (39) during a time interval between the series of bursts.
The application discloses a retrofit LED lamp (16) for replacing a fluorescent lamp in fixture having a magnetic or an electronic ballast (2).The retrofit LED lamp comprises a retrofit lamp connector (1; 1', 2; 2') for electrically connecting the retrofit lamp (16) to the ballast (2) of the fixture. Impedances (8,9) are connected between connector points of the retrofit lamp connector (1; 1', 2; 2') which correspond with connector points of filaments of the fluorescent lamp replaced. Rectifying circuitry (4,5) is coupled to the retrofit lamp connector (1; 1', 2; 2') for rectifying an AC current received from the ballast (2) via the retrofit lamp connector (1; 1', 2; 2'). LED circuitry (3) is coupled to the rectifying circuitry (4, 5). The Led circuitry (3) comprises LEDs for emitting light when energized by the rectified current received from the rectifying circuitry (4, 5). A flicker reduction circuit (6) is connectable in parallel over the LED circuitry (3) for reducing an AC component in the rectified current through the LED circuitry (3) so as to reduce a flickering of the emitted light. A switch (7) for connecting the flicker reduction circuit (6) in parallel over the LED circuitry (3). A switch control circuit (10) controls the switch (7) to keep the flicker reduction circuit disconnected during a delay period, preferably longer than 10 msec, at a begin of a start-up of the LED retrofit lamp (16) and to continuously connect the flicker reduction circuit (6) after the delay period in case the retrofit lamp (16) is energized by a magnetic ballast.
A retrofit LED lamp (30) is disclosed, which can replace a fluorescent lamp in a luminaire provided with a magnetic ballast circuit or an electronic ballast circuit. The lamp (30) comprises a string (31) of serial arranged LEDs (32). The AC voltage from the ballast is supplied to power lines (38, 39). A rectifier (40) with an AC input (47, 48) coupled to the power lines (38, 39) has DC outputs (45, 46) which are coupled to the string (31) of LEDs (32). An AC/DC- converter (23) has DC outputs (33, 34) coupled to the string (31) of LEDs (32). The AC/DC converter is coupled to the power lines (38, 39) via a filter (50) with a high pass frequency characteristic which substantially blocks the transport of electric energy for an AC voltage with a frequency below a first frequency value. For frequencies above a second frequency value the filter (50) let pass the high frequency currents, resulting in that the AC/DC converter provides a DC voltage at its DC outputs (33,34) with a level above the amplitude of the AC voltage received on its inputs. Preferably voltage multipliers (61) are used for the AC/DC converter (23).
The present invention relates to a red-emitting material containing terbium and europium. The material is characterized by an increased absorption in the blue spectrum, whereby the efficiency of LEDs is increased.
C09K 11/68 - Substances luminescentes, p. ex. électroluminescentes, chimiluminescentes contenant des substances inorganiques luminescentes contenant des métaux réfractaires contenant du chrome, du molybdène ou du tungstène
H01L 33/50 - DISPOSITIFS À SEMI-CONDUCTEURS NON COUVERTS PAR LA CLASSE - Détails caractérisés par les éléments du boîtier des corps semi-conducteurs Éléments de conversion de la longueur d'onde
An LED lamp arrangement adapted to replace a fluorescent lamp in a luminaire having a ballast for supplying power to the lamp. The LED lamp arrangement comprises a plurality of LEDs arranged in a plurality of groups, wherein the groups of LEDs are connectable in a plurality of circuit configurations, including at least a first circuit configuration, and a second circuit configuration having a different circuit arrangement of the groups of LEDs in which at least a portion of the groups of LEDs are connected into the circuit differently than in the first circuit configuration. The LED lamp arrangement further comprises a first circuit adapted to generate an output indicating whether the ballast is a magnetic ballast or a non-magnetic ballast, and a second circuit adapted to change a connection of the plurality of groups of LEDs between the first circuit configuration and the second circuit configuration on the basis of the output of the first means. The LED lamp arrangement generates a luminous flux at least 200 lumens and/or the LED dies for the LEDs each have a luminous flux of at least 1 lumen.
An LED lamp arrangement (1) adapted for fitting in a luminaire. The luminaire is adapted for a fluorescent lamp and having a ballast. The LED lamp arrangement has a plurality of LEDs (25, 26, 27) and two or more electrodes (22) for releasably connecting to the luminaire and for conducting current from the ballast for supply to the LEDs. The LED lamp arrangement further has a sensor circuit (21) and a protection circuit (24). The sensor circuit and the protection circuit are adapted to increase the total load impedance of the LED lamp arrangement if the ballast is a constant power electronic ballast.
An LED lamp arrangement (1) adapted for fitting in a luminaire. The luminaire is adapted for a fluorescent lamp and having a ballast. The LED lamp arrangement has a plurality of LEDs (25, 26, 27 ) and two or more electrodes (22 ) for releasably connecting to the luminaire and for conducting current from the ballast for supply to the LEDs. The LED lamp arrangement further has a sensor circuit (21) and a protection circuit (24). The sensor circuit and the protection circuit are adapted to increase the total load impedance of the LED lamp arrangement if the ballast is a constant power electronic ballast.
The invention relates to a light-emitting remote-phosphor device comprising a phosphor ceramic, said phosphor ceramic being designed in layers and having a diameter that is greater in relation to its depth.
C09K 11/08 - Substances luminescentes, p. ex. électroluminescentes, chimiluminescentes contenant des substances inorganiques luminescentes
H01L 33/50 - DISPOSITIFS À SEMI-CONDUCTEURS NON COUVERTS PAR LA CLASSE - Détails caractérisés par les éléments du boîtier des corps semi-conducteurs Éléments de conversion de la longueur d'onde
17.
SAFETY END CAP ASSEMBLY FOR A LED TUBE, AND LED TUBE ASSEMBLY COMPRISING A SAFETY END CAP ASSEMBLY
The present invention provides a safety end cap (25) to be arranged on an end of an elongate housing (3) of a LED tube and a LED tube assembly (1) comprising a safety end cap (25). The safety end cap assembly (25) according to the invention comprises an end cap base element (29) to be arranged at one end thereof on an end of the elongate housing, at least one connector pin (35, 37) extending along a longitudinal axis of the end cap base element (29), an electrical switch electrically connected to the connector pin (35, 37) and switchable between an open state and a closed state by means of a switch button (41) arranged on the end cap base element (29), and an end cap cover element (43) arranged slidable on the end cap base element (29) along said longitudinal axis between a protracted position, in which the switch button (41) is covered by the end cap cover element (43), and a retracted position, in which the switch button (41) is exposed. In its protracted position the end cap cover element (43) extends beyond the end of the end cap base element (29) opposite to the end that is to be arranged on the end of the elongate housing (3), and for sliding the end cap cover element (43) from its protracted position to its retracted position, the end cap cover element (43) is moved towards the end cap base element (29).
F21V 25/04 - Dispositifs de sécurité associés structuralement avec les dispositifs d'éclairage entrant en action quand le dispositif d'éclairage est dérangé, démonté ou cassé ouvrant le circuit électrique
F21K 99/00 - Matière non prévue dans les autres groupes de la présente sous-classe
F21S 4/00 - Dispositifs ou systèmes d'éclairage utilisant une guirlande ou une bande de sources lumineuses
F21V 23/04 - Agencement des éléments du circuit électrique dans ou sur les dispositifs d’éclairage les éléments étant des interrupteurs
F21V 23/06 - Agencement des éléments du circuit électrique dans ou sur les dispositifs d’éclairage les éléments étant des dispositifs de couplage
F21V 25/00 - Dispositifs de sécurité associés structuralement avec les dispositifs d'éclairage
H01R 13/453 - Volet ou plaque de recouvrement ouvert par l'engagement de la pièce complémentaire
H01H 9/28 - Mécanismes d'interverrouillage, verrouillage ou accrochage pour verrouiller des pièces de l'interrupteur par une clé ou un élément équivalent amovible
18.
PROFILE FOR A LED TUBE, LED TUBE COMPRISING SAID PROFILE AND METHOD FOR ASSEMBLING A LED TUBE
The invention relates to a profile (10) for a LED tube (2), LED tube comprising said profile and method for assembling a LED tube (2). The profile (10) comprises an elongated base section having a substantially U-shaped cross section and a supporting section (24) extending from the base section for supporting a printed circuit board, PCB (12), wherein each of the arms of the base section is provided with a protrusion (27) for retaining the PCB between the supporting section and the protrusions, wherein the supporting section is formed by a resilient member.
An LED lamp arrangement adapted to replace a fluorescent lamp in a luminaire having a magnetic or an electronic ballast. The arrangement comprises a plurality of LEDs switchable among a plurality of circuit configurations, first means for sensing a frequency of power supplied to the arrangement by the luminaire and generating an output, and second means for switching the circuit configuration of the plurality of LEDs on the basis of the output of the first means for sensing frequency.
brevets