| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a lamp unit in which even if the quantity of heat of a light source is small, the heat is utilized effectively to suppress clouding inside the lamp unit. <P>SOLUTION: The lamp unit 10 is constructed of a light source 14c, a reflecting plate, a lamp housing to house the light source 14c and the reflecting plate, and a lamp lens to close the opening of the lamp housing. The reflecting plate has a through-hole 62h formed at a portion located at the upper side of the first light source 14c to become a heat source, and the air warmed by the heat of the first light source 14c is guided to the rear side of the reflecting plate through the through-hole 62h. The air guided and rising to the rear side of the reflecting plate through the through-hole 62h is guided to an air storage portion at the end fringe of a closed space formed by the lamp housing and the lamp lens by a first guide means 81. <P>COPYRIGHT: (C)2010,JPO&INPIT |
