Electric lamp and discharge devices – With temperature modifier – Double wall – jacket or casing for envelope
Patent
1983-07-25
1986-05-06
Moore, David K.
Electric lamp and discharge devices
With temperature modifier
Double wall, jacket or casing for envelope
313493, 313609, 313634, H01J 6134, H01J 6152
Patent
active
045874530
ABSTRACT:
A low-pressure mercury vapor discharge lamp comprising an envelope forming a gas-tight closed space and a pair of inner tubes provided in the closed space and having an end thereof sealed at the first end of the outer envelope, the other end thereof being opened into the closed space, and electrodes provided at the sealed end sides in the inner tubes. The temperature of the coldest spot of the envelope is in a range between 45.degree. C. and 65.degree. C. at an ambient temperature of 25.degree. C.
REFERENCES:
patent: 4199708 (1980-04-01), Lauwerijssen et al.
patent: 4383200 (1983-05-01), Van Zon et al.
patent: 4389595 (1983-06-01), Kamei et al.
Kato Yasuo
Matsuno Hiromitsu
Mikoshiba Shigeo
Murayama Seiichi
Ono Tetsuo
Hitachi , Ltd.
Moore David K.
Wieder K.
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