FIELD: engineering of means for displaying advertising information.
SUBSTANCE: device has light-conducting elements, which are mounted relatively to one another at certain distance, and dotted light sources, which are united in groups on basis of amount of lighted by them narrow surfaces of light-conducting elements, which are optically isolated from each other by light-proof screens, inserted between wide surfaces of light-conducting elements to certain depth.
EFFECT: better light parameters of device, higher efficiency, possible manufacture of large-dimension advertising panels.
10 cl, 26 dwg
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