Title:
LOW-PRESSURE MERCURY VAPOR DISCHARGE LAMP
Document Type and Number:
Japanese Patent JP3275797
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a low-pressure mercury vapor discharge lamp, wherein temperature of amalgam is regulated to a proper value and emission efficiency can be improved.
SOLUTION: This low-pressure mercury vapor discharge lamp comprises a fluorescent tube 1 of flexed shape, a holder 2 for holding both end parts of this fluorescent tube 1, a lighting circuit 3 for lighting the fluorescent tube 1, a resin case 4 for storing the lighting circuit 3, a metal-made base 5 provided in the resin case 4, and a globe 7 for storing the fluorescent tube 1 held by the holder 2 to constitute an envelope 6 with the resin case 4. In a fine tube which is an amalgam storage part 8 in an end part of the fluorescent tube 1, amalgam 9 which controls mercury vapor pressure in the fluorescent tube 1, when it is normally lighted, is sealed. An outer surface of the fine tube sealed with the amalgam 9 and an inner side screw part of the base 5 are connected with a heat conduction member 10.
Inventors:
Kenji Itaya
Shiro Iida
Kenji Nakano
Yukawa Masao
Shiro Iida
Kenji Nakano
Yukawa Masao
Application Number:
JP24506397A
Publication Date:
April 22, 2002
Filing Date:
September 10, 1997
Export Citation:
Assignee:
Matsushita Electric Industrial Co., Ltd
International Classes:
H01J61/28; H01J5/50; H01J61/24; H01J61/30; H01J61/52; H01J61/72; (IPC1-7): H01J61/28; H01J5/50; H01J61/30
Domestic Patent References:
| JP61225753A | ||||
| JP62219456A |
Attorney, Agent or Firm:
Fumio Iwahashi (2 others)
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