| 摘要 |
<P>PROBLEM TO BE SOLVED: To secure various performances such as light-emitting efficiency and lighting service life against all the lighting fixture units and achieve high reliability as the vehicular lighting fixture units in the vehicular lighting fixture in which a plurality of lighting fixture units are juxtaposed in mutually vertical positions in a light chamber, by improving heat dissipation efficiency in respective lighting fixture units and by equalizing heat dissipation efficiency in the respective lamp units. <P>SOLUTION: Each of two heat dissipation fin parts 7, 8 in mutually vertical positional relationship is thermally connected to respective light sources 2, 3 via heat pipes 9, 10, and the upper part side of the heat dissipation fin part 8 positioned on the lower side is diagonally bent upward while the lower part side of the heat dissipation part 7 positioned on the upper side is diagonally bent downward. As a result, due to increase of surface area of heat dissipation fins 13, 14 by installing bent parts 14a, 13b and control of an external flow passage in which heat transmission from the heat dissipation fin parts 7, 8 is carried out, it becomes possible that heat dissipation efficiency is improved and temperature rise due to self heat generation of the light source is effectively suppressed. <P>COPYRIGHT: (C)2012,JPO&INPIT |
