| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a compact lighting system including a radiation fin arranged on an outer bottom surface of an apparatus main body 1 and having a structure for improving a radiation property of the apparatus main body 1. <P>SOLUTION: A plurality of radiation fins 3 are provided on the outer bottom surface of the apparatus main body 1 which has a bowl shape for housing a light source 5 inside so as to house the radiation fins in an inner side region of an outer periphery of the apparatus main body 1, and at least the one radiation fin 3 freely projects to an outer side region of the outer periphery of the apparatus main body 1. The lighting system is buried in a ceiling surface, and is provided so that an opening part of the apparatus main body faces downward. <P>COPYRIGHT: (C)2008,JPO&INPIT |
