Electric lamp and discharge devices – With luminescent solid or liquid material – With gaseous discharge medium
Patent
1997-09-15
1999-11-02
Patel, Nimeshkumar D.
Electric lamp and discharge devices
With luminescent solid or liquid material
With gaseous discharge medium
313609, 313631, 313632, 313492, H01J 1704
Patent
active
059777028
ABSTRACT:
A tubular glow discharge electrode is formed therein with a slot in which front end parts of support leads are inserted. The slot has a widened center part which defines an opening. The tube-like glow discharge tube is welded at its one end part to one of the support lead so as to be electrical conductive to the same, and is caulked at it's the other end part to the other one of the support leads through the intermediary of an insulator. A filament electrode (ark discharge electrode) carrying an electron-emissive substance is supported to the free end parts of the support leads within the tube-like glow discharge electrode which therefore surrounds the arc discharge electrode with a small gap defined between the glow discharge electrode and the filament electrode. In this arrangement, particles of the electron-emissive substance evaporated and scattered from the filament electrode are soon trapped to the inner surface of the glow discharge electrode without being emitted from the glow discharge electrode, and can be reused as the electron-emissive substance, thereby it is possible to prolong the use life of the electron device.
REFERENCES:
patent: 2011981 (1935-08-01), Mulder
patent: 2692350 (1954-10-01), Arnott
patent: 4117374 (1978-09-01), Witting
Patel Nimeshkumar D.
Technett Co., Ltd.
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