| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an optical semiconductor lighting device that can solve a problem of a conventional technique. <P>SOLUTION: The lighting device includes a housing, a light-emitting module arranged at one-side open zone of the housing, and a heat radiation unit for radiating heat of the light-emitting module. The light-emitting module includes a heat radiation base where optical semiconductor elements are arranged. The heat radiation unit includes at least a first and a second primary heat pipes in contact with the heat radiation base at one side, and a heat radiation block containing a plurality of heat sinks separated from each other in parallel, wherein the other side parts of the first and the second heat pipes come in contact with each other by penetrating the respective heat sinks at respectively different heights. <P>COPYRIGHT: (C)2013,JPO&INPIT |
