Fluorescent lamp

Details Fluorescent lamp Fluorescent lamp

1997-10-01

2000-02-29

Patel, Ashok

Electric lamp and discharge devices

With gas or vapor

Having electrode exterior to envelope

313234, 313594, 313573, H01J 6504

Patent

active

060313307

ABSTRACT:
There is provided a fluorescent lamp comprising a tubular glass bulb, an internal electrode provided at the center of the tubular glass bulb, a fluorescent layer formed on an inner surface of the tubular bulb, and an external electrode provided on an outer surface of the tubular glass bulb, said tubular glass bulb being charged with a rare gas containing xenon as a main ingredient, wherein the charged pressure of the rare gas is 100 to 300 torr, the inner diameter of the tubular glass bulb is 4 to 12 mm and the thickness of the tubular glass bulb is 0.4 to 1.2 mm. As a result, lighting voltage is greatly reduced, whereby the charged pressure of the rare gas can be increased, thereby making it possible to improve illuminance.

REFERENCES:
patent: 4645979 (1987-02-01), Chow
patent: 4887002 (1989-12-01), Dobashi et al.
patent: 5030894 (1991-07-01), Yoshiike et al.
patent: 5117160 (1992-05-01), Konda et al.

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