| 摘要 |
An advertising display cabinet has a hinged front door comprising a half-silvered mirror. Behind the mirror is an array of open-fronted cells each containing an electrical halogen lamp. Interposed between the open front of each cell and the mirror is a light-transmissive picture (printed or photographic). Photo-sensors disposed behind the mirror respond to diminished incident light caused by the presence of a person in front of the mirror, and activate an electrical controller which thereupon energises in sequence different halogen lamps or combinations thereof in the various cells thereby to cause predetermined backprojected picture images or combinations thereof to be seen by the person in appropriate areas of the mirror. The controller also activates a tape cassette player so as to provide simultaneously a spoken commentary appropriate to the displayed picture images. The individual pictures may be replaced by rolls or cassettes from which pictures may be selected in response to signals provided by the controller or cassette player. The respective cells and associated lamps and pictures may each take the form of a film projector, or an electronic video apparatus, arranged to project a picture image from a film or a video tape respectively directly on to the rear surface of the mirror.
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