| 摘要 |
<P>PROBLEM TO BE SOLVED: To enable to enhance heat radiation quantity from fins by utilizing an air flow, as well as to prevent leakage of light emitted from a light-emitting element as direct light. <P>SOLUTION: A heat sink 30 is equipped with a lower front plate 31 formed in an upright position facing to the front, a front base plate 32 which overhangs to the front diagonally from a top of the front plate 31 inclining upward front and mounts the light-emitting element 10 on a front surface of the front side, an eaves part 38 which is arranged diagonally frontward on the front base plate 32 extended forward and backward, and a plurality of fins 36 which are arranged at intervals at right and left on the back side surfaces of the lower front plate 31, the front base plate 32 and the eaves part 38 in an upright position to the back side surfaces of the lower front plate 31, the front base plate 32 and the eaves part 38. <P>COPYRIGHT: (C)2012,JPO&INPIT |
