Patent ID: 8858048
Filing Date: 2014-10-14
Classification: F21S

Abstract:
1. A vehicle lighting unit comprising: a semiconductor laser light source; a wavelength conversion material configured to receive excitation light emitted from the semiconductor laser light source and emit visible light by excitation; a reflector configured to reflect the light emitted from the wavelength conversion material such that the light is diffused wider in a right-to-left direction than in a vertical direction on the basis of a posture where the lighting unit is mounted; and a mirror disposed in front of the reflector and configured to reflect the excitation light emitted from the semiconductor laser light source toward the wavelength conversion material, wherein the semiconductor laser light source is configured such that a portion of the excitation light emitted from the semiconductor laser light source and reflected off a surface of the wavelength conversion material is incident on the reflector with an elongated area in the right-to-left direction, the reflector covers an upper side of the wavelength conversion material, and the semiconductor laser light source is disposed below the mirror so as to emit the excitation light upward, and includes a light emitting portion which has an elongated shape and which is configured to emit the excitation light spread wider in a short width direction than in a longitudinal direction, and the semiconductor laser light source is configured such that the elongated shape of the light emitting portion is aligned in a front-to-rear direction.