Lighted display board

Card – picture – or sign exhibiting – Illuminated sign – Edge illuminated

Patent

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Details

40446, G09F 1318

Patent

active

056783345

ABSTRACT:
A display board, such as an advertising sign, information sign, road sign, or the like, comprises a panel 10 of transparent material which has at least one lighting element 13 for illuminating the panel from the edge on at least one lateral defining edge. At least one of the two flat sides of the panel is at least partially covered with an opacifier film. The panel which is provided with the opacifier film is provided to backlight display symbols to be mounted onto he front flat side seen by an observer. The light reaching the contact face between the panel and opacifier film, form the panel into the opacifier film, is scattered by the opacification of the film, so that the entire opacifier film lights up and provides an evenly bright face for backlighting a panel provided with display symbols.

REFERENCES:
patent: 1816220 (1931-07-01), Hotchner
patent: 1843980 (1932-02-01), Hotchner
patent: 1963156 (1934-09-01), Stewart
patent: 2223409 (1940-12-01), Dixon
patent: 4484104 (1984-11-01), O'Brien
patent: 4679044 (1987-07-01), Knoll
patent: 5093765 (1992-03-01), Kashima et al.
patent: 5349503 (1994-09-01), Blonder et al.
patent: 5390436 (1995-02-01), Ashall

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