Flat emergency exit sign utilizing an electro-illuminescent lamp

Details Flat emergency exit sign utilizing an electro-illuminescent lamp Flat emergency exit sign utilizing an electro-illuminescent lamp

1982-03-01

1983-12-20

Wilson, John J.

Card, picture, or sign exhibiting

Illuminated sign

Lamp box

40544, G09F 1304

Patent

active

044208987

ABSTRACT:
An "EXIT" sign utilizes a flat fluorescent lamp for illuminating the word "EXIT" through a stencil. The sign also includes a phosphorescent material which cooperates with the stencil to display the word "EXIT" when power to the lamp is cut.

REFERENCES:
patent: 3038271 (1962-06-01), MacHutchin et al.
patent: 3083317 (1963-03-01), Fish et al.
patent: 3404474 (1968-10-01), Johnson
patent: 3562942 (1971-02-01), Mabrey
patent: 3680237 (1972-08-01), Finnerty, Sr.
patent: 3780462 (1973-12-01), Pregel et al.

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