| 摘要 |
<P>PROBLEM TO BE SOLVED: To improve a heat-radiation property while securing a sealing property inside a lamp outer casing. <P>SOLUTION: A lamp unit is provided with a light source unit 12 including: a light source mounting portion 40 arranged with a light source 43, a reflector 42 reflecting light emitted from the light source, and heat sinks 41, 41, ... radiating heat generated during the drive of the light source; a lens unit 7 having a movable frame 8 rotatably supported by a stationary frame 9 with rotating shafts 21, 21 as a fulcrum, and a projection lens 14 and a lens holder 13 and supported by the movable frame; a first aiming operation shaft 10 that adjusts an optical axis in the lateral direction; and a second aiming operation shaft 11 that adjusts the optical axis in the vertical direction. The lens unit is operated relative to the stationary frame such that a distance between a focal point F of light and the projection lens is constant, and the light source unit is fixed to a lamp housing 2 while the heat sinks is positioned outside the lamp outer casing 4. <P>COPYRIGHT: (C)2012,JPO&INPIT |
