| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a lamp that can restrain temperature rise of a circuit unit without enlarging the lamp. <P>SOLUTION: The lamp 7 includes a light-emitting module 24 wherein LEDs 74 are mounted on a board 72, a cylindrical heat sink 46 for radiating heat in light-emitting the LEDs 74, a base 20 arranged at one end side of the heat sink 46, a mounting member 44 for mounting the light-emitting module 24 on the surface, and a circuit unit 26 stored in the heat sink 46 and receiving power through the base 20 and light-emitting the LEDs 74. Heat at light-emission is transmitted to the heat sink 46 by making the mounting member 44 and the heat sink 46 come in touch with each other. The circuit unit 26 is made of a circuit board 110, a plurality of electronic components 112, 114, and 116 mounted on the circuit board 110. At least one electronic component 116 among the plurality of electronic components is thermally jointed with the mounting member 44 via thermally conductive members 154, 156. <P>COPYRIGHT: (C)2013,JPO&INPIT |
