| 摘要 |
PROBLEM TO BE SOLVED: To achieve miniaturization and to suppress deterioration of heat radiation properties.SOLUTION: A power supply unit 8 is configured so that it is arranged in a position above a plurality of light source units 1 and opposing to a heat radiation member 3. A case 81 has: a bottom plate 82 opposing to the heat radiation member 3; a top plate 83 opposing to the bottom plate 82; and a plurality of side plates 84-87 for surrounding the periphery of the top plate 83 and the bottom plate 82. In the bottom plate 82, at least an intake part 820 is provided for sucking air existing in a gap (space S1) into the case 81. In the one or plurality of side plates 84-87, exhaust parts 840, 850 are provided for exhausting the air inside the case 81 to the outside of the case 81. The intake part 820 and the exhaust parts 840, 850 are configured by a plurality of through-holes 8200, 8400, 8500 respectively.SELECTED DRAWING: Figure 1 |
