| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a down light in which heat at a body portion which is heated when an LED, being a light-emitting source, is turned on is dispersed into an open space side under an installation surface. <P>SOLUTION: The illuminating device comprises: a body case 11 which is a bottomed cylinder one end of which is opened and the other end of which is closed; a substrate 12 which is stored inside the body case, with a plurality of LEDs 18 arranged as light-emitting sources on the same plane; and an elastic heat conductive sheet 13 which is interposed between the body case and the substrate to guide the heat generated at the LEDs to the body case. The heat conductive sheet is sandwiched between the body case and the substrate. Across the outer periphery of the opening on the one end side of the body case 11, a flange 17 extending outward across the entire circumference is formed integrally with the body case. When the body case is attached to an embedding hole of an installation surface 28, the flange 17 is exposed to the open space side under the installation surface 28, so that the heat of the body case 11 is dispersed. <P>COPYRIGHT: (C)2009,JPO&INPIT |
