| 摘要 |
PROBLEM TO BE SOLVED: To provide an illumination device that is light, suppresses deposition of dust and oil mist, and excellent in heat radiation.SOLUTION: An illumination device 10 includes a cylindrical housing 11 with both ends opened, thermal diffusion means 12, a reflector 14, and a light emitting element substrate 13 on which a light emitting element is mounted. The thermal diffusion means 12 is disposed inside the housing 11 while thermally contacting with the housing 11.The light emitting element substrate 13 is disposed on one end side inside the housing 11 while thermally contacting with the thermal diffusion means 12. The reflector 14 is disposed inside the housing 11 so as to reflect the light from the light emitting element on the light emitting element substrate 13 to one end side of the housing 11. |
