| 摘要 |
PROBLEM TO BE SOLVED: To provide a lighting device which improves heat radiation performance without impairing waterproofness.SOLUTION: In a lighting device, a first vent hole 41 is formed at a base plate 40 of a heat sink where a light emitting element 2 is provided on the front surface side and a heat radiation fin 42 is provided on the rear surface side, and a second vent hole 51 is formed at an outer cover 5 covering the light emitting element 2. The vent holes 41, 51 are respectively closed by fine hole members 41a, 51a. The structure facilitates convection effects of airflow passing through the vent holes 41, 51 while maintaining waterproofness of the lighting device. |
