| 摘要 |
PROBLEM TO BE SOLVED: To provide a vehicular lighting device capable of improving irradiation performance while securing heat dissipation performance.SOLUTION: A vehicular lighting device 1 has: a light emitting part 2; a holding part 3; a light guide 4; and a lid part 5. The light emitting part 2 has one or more of light emitting elements 21. The holding part 3 holds the light emitting part 2. The light guide 4 guides light from the light emitting part 2, and irradiates a lamp fitting 100 with light emitted from a recess 41 located at an end part on the opposite side of the light emitting part 2 side. The lid part 5 makes the recess 41 exposed, and fixes the light guide 4 to the inside in a state where the recess 41 is located inside the lamp fitting 100. The light guide 4 is formed in a columnar shape, and also, in the recess 41, light entered from the light emitting part 2 side emits by having directivity. |
