DEVICE FOR DEMONSTRATIONS Russian patent published in 1999 - IPC

FIELD: advertising, displaying pictorial information, motion pictures, video and slide images. SUBSTANCE: device has at least first information carrier, for example, cinema screen, detector, time setting unit, which output is connected to unit for movement of first information carrier, and at least one carrier of text or advertisement information and unit for movement of said carrier. Detector is designed as light sensitive element. EFFECT: possibility to display advertisement or another information on corresponding carrier during day time and to replace it with cinema screen in night time for displaying motion pictures, video and other images by means of projection equipment. 3 cl, 3 dwg