| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a luminaire, capable of efficiently transferring and radiating heat generated by an LED unit to a device body. <P>SOLUTION: The heat generated by a light source portion of the LED unit 30 which emits light through a radiation opening 21 of the device body 20 by receiving supply of power from a power source units is radiated to the device body from a radiation portion 33 of the LED unit through a heat transfer means 40. The heat is transferred to the device body through a first heat transfer plate 41, a second heat transfer plate 42 and a third heat transfer plate 43. Since the second heat transfer plate includes a front plate portion contacting with the first heat transfer plate, a rear plate portion 42b facing the front plate portion and contacting with the third heat transfer plate, and a raised plate portion 42c connecting the front plate portion to the rear plate portion, the heat can be transferred by the raised plate portion while averaging heat transfer by the front plate portion and the rear plate portion. Thus, the heat can be efficiently transferred to the device body to avoid concentration of the heat. Since the raised plate portions of the second heat transfer plate are aligned in the same direction, convection of hot air is promoted. <P>COPYRIGHT: (C)2011,JPO&INPIT |
