| 摘要 |
PROBLEM TO BE SOLVED: To provide a vehicle head light which enables further downsizing.SOLUTION: A vehicle head light 10 includes: an LED light source 1; a mounting substrate 2 on which the LED light source 1 is mounted; a heat sink 3 on which the mounting substrate 2 is placed, the heat sink 3 which radiates heat generated by the LED light source 1; a circuit board 4 on which a circuit component 4a forming a driving circuit part of the LED light source 1 is mounted; and a housing case 5 which has a cylindrical shape with a closed bottom, is joined to the heat sink 3 side covering the mounting substrate 2, and houses the circuit board 4. The housing case 5 includes a cylindrical part 5c erected from an inner bottom surface 5ba of the housing case 5, and an outer wall surface 5ca of the cylindrical part 5c encloses the LED light source 1 and controls light distribution of radiation light radiated from the LED light source 1. |
