| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a lamp device capable of reducing light emitted in a direction of a prescribed light shielding angle or more against an optical axis by a reflector and moreover capable of improving light efficiency emitted from the reflector. <P>SOLUTION: The lamp device is provided with an emission part 38 having a semiconductor light emitting element, a reflector 22 including a reflection face 49 with an emission part 38 arranged on one edge side of an optical axis 81 and the other edge side open, and a case in which the emission part 38 and the reflector 22 are arranged. The reflection face 49 is provided with an inflection point 82 and moreover, on a side nearer the emission part 38 than the inflection point 82, there is arranged a first reflection part 83, and a second reflection face part 84 is arranged on a farther side. A change of inclination of a tangent line of the first reflection face part 83 is convex downward, an angle of the tangent line of the second reflection face part 84 is within a range of 20 to 50° against the optical axis 81. <P>COPYRIGHT: (C)2013,JPO&INPIT |
