| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an illuminating device capable of improving a heat-dissipation capability, while suppressing the generation of a temperature gradient at the supporting member of a light source. <P>SOLUTION: The illuminating device is equipped with LEDs 2 a translucent cover 4 internally having the LEDs 2 and passing the light from the LEDs 2 a supporting tube 1 to support the LEDs 2 and a cooling-medium flow channel to flow air serving as a cooling medium inside and outside of the supporting tube 1. Accordingly, the arrangement described above can cool the supporting tube 1 through natural convection from both sides. In other words, it can cool mounting substrates 21 from both sides, resulting in the improvement of heat-dissipation capability. <P>COPYRIGHT: (C)2010,JPO&INPIT |
