Fluorescent lamp having separate cooling means for ballast and f

Electric lamp and discharge devices: systems – Combined load device or load device temperature modifying... – Discharge device load

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315 62, 313 22, 313493, H01J 1728, H01J 1734, H01J 6152

Patent

active

045033587

ABSTRACT:
A fluorescent lamp device according to the present invention includes a ballast, a screw base electrically connected to the ballast, a fluorescent tube curved in an arc at three portions thereof, a bowl-shaped member for housing the ballast with the screw base fixed projecting outside therefrom, a globe, and a partition plate attached to an open end of the member so as to thermally isolate or insulate the ballast from the fluorescent tube and to which the fluorescent tube is fixed. The bowl-shaped member is provided with a plurality of ventilating slits for discharging heat radiated from the ballast, and also with air-ducts for communicating the space inside the globe with the outside air. The globe is also provided with holes at the top portion thereof.

REFERENCES:
patent: 3551736 (1970-12-01), Doehner
patent: 3611009 (1971-10-01), McNeil
patent: 4199708 (1980-04-01), Lauwerijssen et al.
patent: 4270071 (1981-05-01), Morton
patent: 4272703 (1981-06-01), Eckberg
patent: 4300073 (1981-10-01), Skwirut et al.
patent: 4375607 (1981-03-01), Morton et al.
patent: 4389595 (1981-06-01), Kamei et al.
European Search Report, EP 82104891.5.

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