Patent ID: 8579484

Claim:
A vehicle lighting device comprising at least a heat sink, a light emitting element, a reflection plate, and a light leakage processing plate, wherein: the heat sink is formed so as to have a flat face, the light emitting element is mounted in a region of the flat face of the heat sink so that light from a light emission surface thereof is emitted in a first direction that crosses the flat face, the reflection plate is disposed so as to cover the flat face of the heat sink, and light from the light emitting element is reflected and then the reflected light is emitted in a second direction that crosses the first direction, the light leakage processing plate is disposed at a peripheral edge part of the reflection plate on a side of the reflection plate opposite a side of the reflection plate facing the light emitting element, and is configured so as to scatter light leakage that is not reflected on the reflection plate from among beams of the light from the light emitting element, and the light leakage processing plate is disposed so as to have a gap with respect to the peripheral edge part of the reflection plate, and extends over the peripheral edge part of the reflection plate along the second direction.