| 摘要 |
<P>PROBLEM TO BE SOLVED: To obtain a vehicular lighting fixture equipped with both a head lamp bulb and a light-emitting diode, or obtain a light-emitting diode bulb hardly affected by heat and superior in light diffusibilty. <P>SOLUTION: A light source 54 of the head lamp bulb 50 generates heat by light emission. Accordingly, a space part 19 surrounded by a reflecting face 12A of a reflector 12 and a lens 14 becomes to have a high temperature. As for the light-emitting diode bulb 400, a light-emitting part 412 of the tip part of a light guide part 410 is arranged and installed at the reflecting face 12A side of the reflector 12, that is the space part 19. However, the light-emitting diode 150 is arranged and installed at the rear face 12B side of the reflecting face 12A. In other words, the head lamp 10 has a constitution that the light-emitting diode 150 is not affected by the heat even if the space part 19 at which the light-emitting part 412 of the light-emitting diode bulb 400 is arranged and installed becomes to have the high temperature. In the light-emitting diode 150, malfunctions such as life reduction and wire disconnection due to effect of heat are prevented. <P>COPYRIGHT: (C)2008,JPO&INPIT |
