| 摘要 |
PROBLEM TO BE SOLVED: To solve problems of a conventional lighting fixture for a vehicle that a complex light distribution pattern can not be obtained, a light quantity of a light distribution pattern for traveling can not be adjusted, and a degree of freedom of layout of the lighting fixture is restricted, so as to respond to needs of various light distribution patterns and contribute to traffic safety. SOLUTION: A reflector 3R includes a main reflection surface 4 and a sub reflection surface 5 basically formed of a parabolic surface. A bulb 2R is arranged so as to be orthogonal to an optical axis ZR-ZR of the main reflection surface 4. The bulb 2R includes a main filament 7, a sub filament 8, and a shade 9 serially arranged in a bulb axis ZB-ZB direction. The main filament 7 is positioned on a focal point FM of the main reflection surface 4 or in its periphery. The sub filament 8 is positioned on a focal point FS of the sub reflection surface 5 or in its periphery. The shade 9 is adjacent to the sub filament 8, and shields light which is incident to the main reflection surface 4 out of light radiated from the sub filament 8. As a result, the complex light distribution pattern can be obtained, light quantity of the light distribution pattern can be adjusted, and the degree of freedom of layout of the lighting fixture can be increased. COPYRIGHT: (C)2007,JPO&INPIT |
