Low energy sign illumination system

Details Low energy sign illumination system Low energy sign illumination system

1977-03-22

1979-02-20

Pitrelli, John F.

Card, picture, or sign exhibiting

Illuminated sign

Lamp box

40573, G09F 1304

Patent

active

041399579

ABSTRACT:
A low energy sign contruction is illustrated for illumination of signs of the type having translucent illuminated faces. An opaque sign border is bridged by a reflector extending generally parallel to the illuminated face and having a truncated sawtooth profile. For single sided signs, one set of sawtooth points is truncated; for dual sided signs, both set of sawtooth points are truncated.Bayonet mounted lighting sockets are mounted at apertures in the respective truncations and utilize the metallic reflective surface as one side of a low voltage (10.5-volt) AC circuit. The reflector forms a cooled heat sink mounting the bulbs as well as a supporting matrix. The lamps, as mounted to this supporting matrix, are typically spaced at distances which do not exceed twice the distance of the lamp filament to the translucent face. By the expedient of using 14-volt lamps, prolonged lamp life with low energy illumination results.

REFERENCES:
patent: 1574449 (1926-02-01), Simons
patent: 1681491 (1928-08-01), Long
patent: 2191353 (1940-02-01), Poblocki
patent: 3539801 (1970-11-01), Bobrick

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