| 摘要 |
PROBLEM TO BE SOLVED: To provide a lamp with a built-in reflecting mirror which can reduce uneven brightness. SOLUTION: The lamp with a built-in reflector is attached to a target body, and comprises a trunk having a recessed reflecting surface at an opening end; a pair of an anode and a cathode arranged at prescribed intervals 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. The conductive supporting member is within the angular range of less than±30°to a reference straight line extended vertically downward from the cathode to the power feeding ring in the state that the lamp is attached. COPYRIGHT: (C)2005,JPO&NCIPI |
