| 摘要 |
PROBLEM TO BE SOLVED: To provide a lamp with a built-in reflector which can maintain the good hermeticity of a discharge space while suppressing the temperature rise of a flange. SOLUTION: The lamp with a built-in reflector comprises a trunk having a recessed reflecting surface at an opening end; a pair of anode and cathode arranged in the discharge space formed inside the trunk including the reflecting surface; a power feeding ring fixed to the opening end of the trunk; and a conductive supporting member which is joined to the power feeding ring and the cathode at its one end and another end, respectively, and supports the cathode at a prescribed position on the central axis of the trunk. In the lamp, the conductive supporting member is formed in a non-linear shape, and the overall length is made longer than the shortest distance for connecting the cathode and the power feeding ring. COPYRIGHT: (C)2005,JPO&NCIPI
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