| 摘要 |
PROBLEM TO BE SOLVED: To provide a light source unit which suppresses the temperature rise of a semiconductor light emitting element such as a light emitting diode and avoids the element deterioration and the illuminance change of a lighting device.SOLUTION: A light source unit 140 is installed at a lighting device 100 including a housing for light source unit attachment 110; a transparent member 120; and a light reflection board 130. The light source unit 140 includes: at least one light emitting diode 141; a heat sink 142 where the light emitting diode 141 is installed; and a heat radiation film 143 coating a surface of the heat sink 142 and having thermal emissivity higher than that of the heat sink 142. |
