| 摘要 |
PROBLEM TO BE SOLVED: To provide an LED head lamp having high light utilization efficiency and excellent in light distribution performance both when forming a light distribution pattern for a low beam and when forming a light distribution pattern for a high beam.SOLUTION: A light source 1 is arranged approximately on a light axis Xof a projection lens 40. A rotatable light-shielding mirror 30 is arranged between a projection lens 40 and the light source 1 in a vertically rotatable manner. A first reflector 10 is arranged on an upper side of a horizontal plane including the light axis Xso as to cover the light source 1 and the rotatable light-shielding mirror 30, and a second reflector 20 is arranged on a lower side of the horizontal plane so as to cover the rotatable light-shielding mirror 30. The rotation of the rotatable light-shielding mirror 30 can switch between the formation of a light distribution pattern for a low beam and the formation of a light distribution pattern for a high beam while efficiently using radiation light from the light source 1. |
