| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an electric bulb can expecting sufficient restraint of temperature rise of semiconductor light-emitting elements generating heat in a light emission state. <P>SOLUTION: The electric bulb 1 includes a metallic body 2, a light source 7, and a globe 11. The body 2 includes a light source mounting part 4. The light source 7 includes LEDs (semiconductor light-emitting elements) 9a and a light source substrate 8 mounting the LEDs 9a. The light source 7 is loaded on the light source mounting part 4 by making the light source substrate 8 in contact with a surface 4a of the light source mounting part 4. The globe 11, arranged to cover the light source 7 and formed of a material with translucency and high thermal conductivity, is to be equipped with a heat-receiving part 13, which is thermally coupled with the light source substrate 8. <P>COPYRIGHT: (C)2013,JPO&INPIT |
