Fluorescent lamp having additional and interior fluorescent surf

Details Fluorescent lamp having additional and interior fluorescent surf Fluorescent lamp having additional and interior fluorescent surf

1996-11-27

1998-09-08

Oen, William L.

Electric lamp and discharge devices

With luminescent solid or liquid material

With gaseous discharge medium

313485, H01J 162, H01J 6304

Patent

active

058049142

ABSTRACT:
A fluorescent lamp with multiple fluorescent surfaces including a hollow outer tube of any desirable shape, and at least one transparent inner tube or plate-like structure of any shape disposed inside the outer tube. The filaments are mounted at each end of the outer tube. The outer tube is filled with mercury vapor when it is in a vacuum state (less than 10.sup.-3 torr). The inner and outer wall surfaces of the inner tube or plate-like structure and the inner wall surface of the outer tube are all coated with fluorescent materials. When the filaments are supplied with electric currents to release electrons which collide with the mercury molecules to generate ultra-violet rays, much more fluorescent materials will be reached by the ultra-violet rays to generate visible light, thus increasing the luminosity of the fluorescent lamp. A method of manufacturing the fluorescent lamp is also disclosed.

REFERENCES:
patent: 3194997 (1965-07-01), Waly
patent: 4260931 (1981-04-01), Wesselink et al.
patent: 4617489 (1986-10-01), Hough
patent: 4740729 (1988-04-01), Chow
patent: 5648700 (1997-07-01), Chu et al.

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