| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a head lamp device for a vehicle, in which lowering of discharge start voltage is realized without degrading the instantaneous lighting, and small size and light weight and low cost of the stabilizer and low cost of the gas arc tube by lowering the filling gas pressure are realized. <P>SOLUTION: A filament 15 is arranged inside or in the vicinity of the gas arc tube 1 in which a pair of main electrode terminals are sealed and this filament 15 is made to emit light for a short time from the start of lighting. <P>COPYRIGHT: (C)2004,JPO&NCIPI |
