| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a lighting fixture for a vehicle with a plurality of reflectors in which luminous flux utilization factor of light from a light source is increased without enlarging its depth dimensions. <P>SOLUTION: The lighting fixture for a vehicle is provided with four reflectors 30A, 30B, 30C, 40 which reflect light from a light-emitting chip 20a toward the front of the lighting fixture. By this structure, the light emission width is made large without enlarging the depth dimensions of the lamp. In this case, out of the three reflectors 30A, 30B, 30C surrounding the reference axial line Axo which extends in a direction orthogonal to the front and rear direction of the lamp so as to pass through a reference point O in the vicinity of the light source, the reflector 30A which is located at a position where the light emitting in a direction with largest front deflection angle to the reference axial line Axo from the light-emitting chip 20a enters is arranged at the position closer to the reference point O than the reflector 30B which is located at the second position. Thereby, a solid angle to the reference point O is sufficiently secured even if the depth dimension is not enlarged, and the luminous flux utilization factor to the light from the light-emitting chip 20a is increased. <P>COPYRIGHT: (C)2012,JPO&INPIT |
