| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an illumination device capable of sufficiently dissipating heat generated by a power supply circuit. <P>SOLUTION: The illumination device includes: a light source module 1; a power supply circuit 6 to supply electric power to the light source module 1; a heat-dissipation section 3 in which the power source circuit 6 is housed in the interior and the heat generated by the power supply circuit 6 is dissipated; a base 5 connected to an external power source; and an insulating ring 4 installed and electrically insulated between the heat-dissipation section 3 and the base 5. The insulating ring 4 is a thermal conductor. Since the insulating ring 4 acts as the thermal conductor, the heat generated by the power supply circuit 6 can be transferred to the heat-dissipation section 3 and the base 5 via the insulating ring 4 and can be heat-dissipated from the heat-dissipation section 3 and the base 5 to the exterior. Since the base 5 can be also used as a heat-dissipating member, the heat-dissipating area can be made larger, and the heat from the power supply circuit 6 can be dissipated sufficiently. <P>COPYRIGHT: (C)2012,JPO&INPIT |
