| 摘要 |
<P>PROBLEM TO BE SOLVED: To enhance heat absorption efficiency of a heat conductive member absorbing heat of a light emitting part by positioning of the heat conductive member and control a temperature rise of the light emitting part. <P>SOLUTION: The headlight 1 is provided with a semiconductor laser 3 emitting laser beams, a light emitting part 7 including a phosphor which emits light by an excitation light emitted from the semiconductor laser 3, a heat conductive member 13 which is positioned on a laser beam irradiation face 7a side in the light emitting part 7 and receives the heat of the light emitting part 7, and a hollow member 14 which is positioned on a counter face 7b side facing the laser beam irradiation face 7a in the light emitting part 7 and receives the heat of the light emitting part 7. <P>COPYRIGHT: (C)2012,JPO&INPIT |
