| 摘要 |
PROBLEM TO BE SOLVED: To provide a lighting device with a simple internal structure.SOLUTION: A lighting device includes a base part, a radiator having a projection part extended from the base part with one surface, a light source part having a substrate arranged on one surface of the projection part and a light-emitting element arranged on the substrate, an optical plate arranged on the light-emitting element, a drive part which is arranged on the base part and is electrically coupled with the light source part, and a housing which houses the radiator, light source part, optical plate, and drive part. One surface of the projection part is located between a first point and a second point, and the first point is a point corresponding to a half of the total height of the housing, and the second point may be a point between the light-emitting element and the optical plate with a shortest spacing of 5 mm. |
