| 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 including a reflector reflecting light emitted from a light source, and a heat sink radiating heat generated during the drive of the light source, a movable frame supported by a stationary frame to be rotatable in the vertical direction with a rotating shaft as a fulcrum, a lens unit supported by the movable frame to be movable in the lateral direction, a first aiming operation shaft that moves the lens unit to the lateral direction relative to the movable frame to adjust an optical axis, and a second aiming operation shaft that rotates the lens unit reltive to the movable frame to adjust the optical axis. The lens unit is rotated with the rotating shaft as a fulcrum such that a distance between a focal point of light and the projection lens is constant, and the light source unit is fixed to a lamp housing while the heat sink is positioned outside the lamp outer casing. <P>COPYRIGHT: (C)2012,JPO&INPIT |
