Electric lamp and discharge devices – With gas or vapor – Envelope with particular structure
Patent
1995-04-05
1995-12-05
Yusko, Donald J.
Electric lamp and discharge devices
With gas or vapor
Envelope with particular structure
313325, 313589, H01J 6135
Patent
active
054732204
ABSTRACT:
A discharge tube according to the present invention is constructed such that it comprises a cylindrical container made of an insulation tube, a pair of discharge electrodes provided at opposite ends of the cylindrical container, a plurality of insulation coated lines containing a gas-ionization accelerator therein, which insulation coated lines being provided on the inner surface of the cylindrical container covering the regions surrounding a cathode and a discharge space therein in a substantially parallel relation with a center axis of the cylindrical container, wherein the gas-ionization accelerator is made of a silicate powder selected from the group of alkaline metal, alkaline earth metal and so on, or of electrically conductive finely divided particles selected from the group of carbon, metal, metal oxide and so on. The discharge tube according to the present invention shows stabilized discharge inception characteristics even when the frequency of repetitive discharge is low, and in addition, it does not generate an inner creeping discharge even if it is continuously used for a long time, thereby providing a stabilized discharge operation.
REFERENCES:
patent: 5103135 (1992-04-01), Lange et al.
patent: 5235247 (1993-08-01), Shishida et al.
Mitani Tetsuya
Sato Takashi
Suzuki Takahisa
Tsuchiya Hiromitsu
Patel Nimesh D.
Yazaki Corp.
Yusko Donald J.
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