Tubular EL lamp

Details Tubular EL lamp Tubular EL lamp

1994-11-22

1998-01-27

Lazarus, Ira S.

Illumination

Light source or light source support and luminescent material

362 23, 362 26, 362217, 362255, 313512, G01D 1128, F21S 300, H05B 3300

Patent

active

057115940

ABSTRACT:
An EL lamp includes a strip of EL material within a translucent cylinder, preferably a glass tube. The tube can be frosted or coated to further enhance the appearance of the lamp. The strip can be flat or curved and, in an alternative embodiment of the invention, the lamp includes a glass fiber between the light emitting surface of the strip and the tube for gathering light from the strip and emitting the light in a preferred direction. The tube is an optical element combined with the strip to produce the unexpected result of having the tube appear luminous, even without coatings to enhance this effect.

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patent: 3359445 (1967-12-01), Roth
patent: 4357557 (1982-11-01), Inohara et al.
patent: 4559582 (1985-12-01), Scardilli et al.
patent: 4959759 (1990-09-01), Kohler
patent: 5178447 (1993-01-01), Murase et al.
patent: 5257167 (1993-10-01), Clem

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