Title:
【考案の名称】アルカリ金属蒸気ランプ
Document Type and Number:
Japanese Patent JPS60138256
Kind Code:
U
Abstract:
A high pressure alkali metal vapor lamp envelope of alumina ceramic has an externally projecting metal tube serving as an inlead and as a reservoir for excess sodium-mercury amalgam. The ability of the lamp to withstand heavy vibration without the occurrence of voltage rise and drop-out caused by expulsion of amalgam droplets from the reservoir is enhanced by flattening the end portion of the metal tube to a least dimension adequate to increase the capillary attraction to better than twice the force of gravity.
Inventors:
JACK MATCH STROKE
Application Number:
JP426785U
Publication Date:
September 12, 1985
Filing Date:
January 18, 1985
Export Citation:
International Classes:
H01J61/24; (IPC1-7): H01J61/24
Domestic Patent References:
| JPS5387584A | 1978-08-02 |