| 摘要 |
PURPOSE: To obtain sufficient thermodiffusion capacity effectively, by slenderizing the lens surface to achieve slimness in design, and by forming an upper expansion part particularly in the upper part of a headlight case within a cover. CONSTITUTION: A lens surface 61 is slenderized in accordance with a slender aperture 21 of a cover 2 containing a headlight case 5 to achieve slimness in design. And an upper expansion part 51 is formed in the upper part of the headlight case 5 within the cover 2 to secure capacity within the headlight case 5 in the upper part to which the heat of the bulb 7 goes up, in spite of the slender lens surface 61. Thus, sufficient thermodiffusion capacity can be effectively obtained. |
