Fluorescent lamp

Details Fluorescent lamp Fluorescent lamp

2006-05-16

2006-05-16

Glick, Edward J. (Department: 2882)

Electric lamp and discharge devices

With luminescent solid or liquid material

With gaseous discharge medium

C313S573000, C313S634000

Reexamination Certificate

active

07045946

ABSTRACT:
By hiding at least blackened portions from outside to make visual confirmation thereof impossible, a fluorescent lamp keeps its clean outward appearance until its service life expires and insufficiency of luminance on ends of the fluorescent lamp is dissolved. The fluorescent lamp comprising a plurality of discharging electrodes in a glass tube, and wherein the glass tube comprises an illuminating glass tube portion coated at inner wall surfaces thereof with a fluorescent substance and functioning as an illuminating body, and auxiliary glass tube portions provided contiguous to the illuminating glass tube portion and hidden from outside by shielding members, and wherein the discharging electrodes are not provided in the illuminating glass tube portion but mounted in the auxiliary glass tube portions.

REFERENCES:
patent: 2512282 (1950-06-01), MacGregor
patent: 4950053 (1990-08-01), Haim et al.

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