Electric lamp and discharge devices – With temperature modifier – Using liquids or fluid flow directing means
Patent
1993-05-07
1995-11-14
O'Shea, Sandra L.
Electric lamp and discharge devices
With temperature modifier
Using liquids or fluid flow directing means
313570, 313 17, 313 20, 313 33, 313 38, 313609, 313612, H01J 724, H01J 6152
Patent
active
054669880
ABSTRACT:
A high pressure discharge lamp is disclosed. The high pressure discharge lamp includes: a discharge tube which is filled with gas; a first electrode having a first end, the first electrode being provided in the discharge tube; and a second electrode having a second end which is positioned away from the first end by a certain distance, the second electrode being provided in the discharge tube. In the high pressure discharge lamp, arc discharge is induced by a voltage applied between the first end of the first electrode and the second end of the second electrode. The high pressure discharge lamp further includes a convection regulating member which is electrically insulating and provided in the discharge tube. The convection regulating member suppresses the deformation of the arc discharge caused by the convection of the gas in the discharge tube.
REFERENCES:
patent: 2263032 (1941-11-01), Farnsworth
patent: 2367595 (1945-01-01), Marden
patent: 3109952 (1963-11-01), Beese
patent: 3867660 (1975-02-01), Fohe
patent: 4794297 (1988-12-01), Gauge et al.
patent: 5296779 (1994-03-01), Muzeroll
"Reducing Additive Segregation in Metal Halide High-Intensity Discharge Lamps", Zollweg, Journal of IES, 1975, pp. 12-19.
Horiuchi Makoto
Kamitani Takayuki
Koyama Kazutaka
Ozawa Masataka
Esserman Matthew J.
Matsushita Electric - Industrial Co., Ltd.
O'Shea Sandra L.
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