Spherical-bulb fluorescent lamp

Details Spherical-bulb fluorescent lamp Spherical-bulb fluorescent lamp

1977-03-16

1978-06-13

Demeo, Palmer C.

Electric lamp and discharge devices

With luminescent solid or liquid material

With gaseous discharge medium

313220, 313224, 313226, H01J 6116, H01J 6130, H01J 6144

Patent

active

040951359

ABSTRACT:
A spherical or dome-shaped fluorescent lamp comprises a spherical or dome-shaped outer bulb and an inner bulb formed with a zig-zag groove over the outer surface thereof and inserted into the outer bulb to define a zig-zag discharge path therebetween. The discharge path has a substantially circular on elliptical cross sectional configuration and is filled with a discharge medium consisting of mercury and a rare gas or rare gas mixture for emitting ultraviolet radiation. A phosphor coating is applied to the inner wall surface of the outer bulb and/or the outer surface of the inner bulb.

REFERENCES:
patent: 2501375 (1950-03-01), Breadner et al.
patent: 3551736 (1970-12-01), Doehner
patent: 3609436 (1971-09-01), Campbell
patent: 3849689 (1974-11-01), Campbell
patent: 3903447 (1975-09-01), Young et al.

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