| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an illumination device which can prevent inflow of dust or the like from an underpart of a roof and which is superior in a heat-dissipating effect without need of large-scale construction. <P>SOLUTION: The illumination device having an illumination unit with a built-in illumination light source and having a lamp case loaded with the illumination unit inside its concave shape is so constituted that it has a cooling fan equipped in the interior of a concave at the lamp case, and carries out sucking of air from a direction of light emission of the illumination light source with the illumination unit in a state loaded in the lamp case, and exhausts air toward the light irradiation direction after the illumination unit is air-cooled. <P>COPYRIGHT: (C)2012,JPO&INPIT |
