Abstract

An elevator display system of the present invention comprises: an elevator shaft of which one or more surfaces are transparent, wherein one or more PDLC films are provided on the transparent surfaces; an elevator car of which one or more parts are transparent such that sight is secured in a direction of the transparent surfaces of the elevator shaft, and which comprises a distance measuring sensor in one or more of a top portion and a bottom portion thereof; a projector for projecting an image onto the transparent surfaces of the elevator shaft; and a control module comprising a tracking unit for determining a location (L) of the elevator car from information collected by the distance measuring sensor and a control unit for controlling a voltage applied to the plurality of PDLC films according to the location of the elevator car.

IPC Classes  ?

• B66B 3/02 - Position or depth indicators
• B66B 17/36 - Gates or other apparatus controlling access to, or exit from, cars, cages, or hoistway landings
• G02F 1/1334 - Constructional arrangements based on polymer-dispersed liquid crystals, e.g. microencapsulated liquid crystals
• G01B 21/16 - Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring distance or clearance between spaced objects
• G09F 19/18 - Advertising or display means not otherwise provided for using special optical effects involving the use of optical projection means, e.g. projection of images on clouds
• G01D 21/02 - Measuring two or more variables by means not covered by a single other subclass
• B66B 1/34 - Control systems of elevators in general Details