Illuminated display device and mold useful for the formation of

Details Illuminated display device and mold useful for the formation of Illuminated display device and mold useful for the formation of

1996-06-28

1999-07-13

Davis, Cassandra H.

Card, picture, or sign exhibiting

Illuminated sign

40552, 40580, G09F 1300

Patent

active

059210125

ABSTRACT:
A display device is describes which forms contained formed figures such as symbols, letters or numbers, ideograms, and which can be a sign, billboard, signal, message board, etc. Each figure is formed as a narrow but high projection which stands out of the external face of a sheet which permits the passage of light originating from a source behind the sheet. Each figure is surrounded by a sector of this same sheet capable of intercepting at least part of the light, so that the figure stands out in marked high relief. Also described is a mold particularly useful for production of the formed sheet, which includes a large number of very thin rigid straight rods, abutting one another within an adjustable frame, which are movable laterally among themselves in a slidable tight relation and able to stay locked among themselves by friction against sliding during vacuum or pressure molding.

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