| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a head lamp for a vehicle for improving visibility for a surrounding pedestrian, obstacle and the like.SOLUTION: A head lamp for a vehicle using plural head lamp units including LED light sources includes: a first head lamp unit configured to form a hot zone light distribution pattern; a second head lamp unit for forming a diffusion light distribution pattern superposed on the hot zone light distribution pattern; and a wide light distribution head lamp unit for forming a large diffusion pattern that has a large diffusion degree and whose optical axis is directed outward to a reference axis. The LED light source has color temperature of 4500-7000 [K], and four coordinate values expressing prediction of appearance when a 4-color (red, green, blue, yellow) color chart is radiated within a predetermined region, and comprises a blue light emitting diode element and a yellow light emitting phosphor. A radiation energy component ratio in a wavelength region of 450-550 nm is more than 0.32.</p> |
