| 摘要 |
An illumination device is provided that can reduce the displacement of the position of a diffusion plate. This illumination device includes the diffusion plate and a fixing pin that fixes the diffusion plate. When seen in plan view from the side of the light emitting surface of the diffusion plate, a diffusion plate fixing portion is provided in a perimeter portion on the side of the light emitting surface of the diffusion plate, and the fixing pin is engaged with the diffusion plate fixing portion. |
