Display unit

Details Display unit Display unit

1990-05-04

1991-06-25

Husar, Stephen F.

Illumination

Revolving

362812, 362800, 40547, F21V 704

Patent

active

050272586

ABSTRACT:
An illuminated display unit such as a board with a house number thereon or an advertising billboard, has a light guide panel. At least one electrical illuminating element is arranged in the vicinity of at least one lateral limiting edge thereof. The light guide panel serves for illuminating logo symbols, which are preferably in the form of film or of vapor coated layers, on the light guide panel. At least one of the lateral limiting edges of the light guide panel is provided with a light guide batten whose thickness is in excess of the thickness of the light guide panel and at least one of the illuminating elements is mounted in the batten. The transition between the light guide batten and the light guide panel is designed so as to have a high optical conductivity or transmittivity. The external surfaces of the light guide batten are provided at least partly with an inwardly reflecting layer. This makes it possible for the light of the illuminating elements, which are more especially in the form of LED's with a large diameter, to be fully introduced in substantially thinner light guide panels in order to reduce costs and weight.

REFERENCES:
patent: 2095558 (1937-10-01), Oberaeker
patent: 2551622 (1951-05-01), Mohr
patent: 2623313 (1952-12-01), Fuchs
patent: 4385343 (1983-05-01), Plumly
patent: 4573766 (1986-03-01), Bournay, Jr. et al.
patent: 4799133 (1989-01-01), Strzalko et al.
patent: 4807378 (1989-02-01), Bell
patent: 4918578 (1990-04-01), Thompson

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