Patent ID: 8465189
Filing Date: 2013-06-18
Classification: F21S,F21V

Abstract:
1. A vehicular headlamp, wherein a light source unit for light distribution formation is accommodated inside a lamp chamber defined by a lamp body and a front cover, the vehicular headlamp comprising: a metal heat transfer member that serves as a light source unit structural member; a light-emitting element that serves as a light source; blowing means for cooling the light-emitting element provided inside the lamp chamber; and a lighting circuit that controls lighting of the light-emitting element, wherein the light-emitting element, the blowing means, and the lighting circuit are each attached to the metal heat transfer member, wherein the lighting circuit is formed from a circuit board mounted with a circuit element, wherein a ventilation passage for air blown from the blowing means is formed between the circuit board and the metal heat transfer member, wherein the ventilation passage is disposed apart from the metal heat transfer member, and wherein the vehicular headlamp further comprises: