| 摘要 |
PROBLEM TO BE SOLVED: To provide a small headlight lamp device for a vehicle having excellent radiation characteristic at low cost. SOLUTION: Electronic components, consisting an electric discharge lamp lighting device 13, for lighting an electric discharge lamp 2 are mounted on a board 8. The board 8 is thermally connected with a metallic radiator 9. The device 13 is mounted to a headlamp fixture 1 so that a base part 12 of the radiator 9 is exposed outside of the fixture 1 and the board 8 is stored within the fixture 1 from an opening part 16. An O-ring 14 is arranged between the base part 12 and outer surface of the fixture 1, thereby water may not enter the fixture 1. |
