| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a high-reliability cooling device for a vehicular lighting fixture which suppresses temperature rise in a lamp chamber, over a long period. <P>SOLUTION: The cooling device for a vehicular lighting fixture 20 includes a lamp housing 22 constituting a lamp chamber 40 in which a light source 32 is contained; an impeller 52, disposed outside the lamp housing 22 and in a passage 44 of a fluid W which rotate due to the flow of the fluid W, wherein the fluid, while being in a state of isolation from outdoor air; and a fan 60 rotated by the rotation of the impeller 52 in the inside of the lamp housing 22. <P>COPYRIGHT: (C)2010,JPO&INPIT |
