Internally illuminated display structure

Details Internally illuminated display structure Internally illuminated display structure

1982-08-19

1985-01-01

Hirsch, Paul J.

Card, picture, or sign exhibiting

Illuminated sign

Lamp box

40541, G09F 1304

Patent

active

044909330

ABSTRACT:
To provide a uniformly illuminated panel of essentially uniform brightness hroughout, although illuminated by essentially point source lamps, a box-like structural element (1) is provided having a light emitting surface (2) which has, in the direction of transmission of radiation therethrough, a ratio of reflection to transmission of radiation greater than 50%, and preferably between 80% to 95%, the interior wall surfaces of the hollow structure being reflective, and the hollow structure having a depth dimension, for example about 2 cm, which is small with respect to the height and width dimensions.

REFERENCES:
patent: 2015170 (1935-09-01), Ward
patent: 2104230 (1938-01-01), Kiss
patent: 2152353 (1939-03-01), Lewin
patent: 2213868 (1940-09-01), Lucian
patent: 2354018 (1944-07-01), Heltzer et al.
patent: 2579230 (1951-12-01), Giboney
patent: 2878606 (1959-03-01), Meijer
patent: 2900491 (1959-08-01), Barenzi et al.
patent: 3173985 (1965-03-01), Wendel
patent: 3225470 (1965-12-01), Schwab et al.
patent: 3521391 (1970-07-01), Murai
patent: 3562942 (1971-02-01), Mabrey
patent: 3707792 (1973-01-01), Mabrey et al.
patent: 3921324 (1975-11-01), Flannery
patent: 4071883 (1973-01-01), Dennis
patent: 4229783 (1980-10-01), Eberhardt
patent: 4335421 (1982-06-01), Modia et al.

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