US 2019/0376679 A1 · VEHICULAR HEADLIGHT

Abstract

To provide a vehicular headlight which, by using a fan, can efficiently cool a light source through a heat sink and also efficiently cool a light source drive circuit, a vehicular headlight (1) according to the present invention includes a lamp housing (10), a lamp lens (11), a lamp unit (2), a fan (3), and a light source drive circuit (4). The lamp unit (2) includes a light source (20), a heat sink (5), and a light control member (6). An outlet side of the fan (3) faces the heat sink (5), and an intake side of the fan (3) faces the light source drive circuit (4). Consequently, by using the fan (3), the present invention can efficiently cool the light source (20) through the heat sink (5) and also efficiently cool the light source drive circuit (4).

Claims4

Dependent claims

A vehicular headlight comprising:

a lamp housing and a lamp lens that form a lamp chamber;
a lamp unit disposed in the lamp chamber and attached to the lamp housing via an optical axis adjustment mechanism;
and
a fan and a light source drive circuit disposed in the lamp chamber and attached to the lamp housing separately from the lamp unit,
wherein the lamp unit includes a light source driven by the light source drive circuit, a heat sink, and a light control member arranged to control light from the light source, and
an outlet side of the fan faces the heat sink, and an intake side of the fan faces the light source drive circuit.

3 more elements

Dependencies are inferred from the claim text.

Vehicular headlight

Life of this patent

Vehicular headlight

Life of this patent

Abstract

Claims4