| 摘要 |
PROBLEM TO BE SOLVED: To provide a lighting device capable of achieving a long service life of a plurality of light emitting elements by cooling down efficiently the light emitting elements almost uniformly irrespective of light irradiation directions.SOLUTION: In an LED lighting device 1 in which an optical module including a light emitting element, a circuit substrate mounted with this, a heat sink having a plurality of radiator fins and an outer lens is fitted to a fitting arm 4 turnably, the optial module is divided into a plurality of optical modules M1, M2, M3 and each of the optical modules M1-M3 is supported turnably on a metal frame 2 of a frame shape, and the metal frame 2 supporting these optical modules M1-M3 is supported by the fitting arm 4 turnably. |
