| 摘要 |
PROBLEM TO BE SOLVED: To provide a lighting device for a grid ceiling system which includes a highly versatile lighting unit and has flexibility in construction performance.SOLUTION: A lighting device 10 for a grid ceiling system includes: an LED array 32 in which multiple LEDs 31 are mounted; a heat sink 14 provided on the rear surface side of the LED array 32, the heat sink 14 on which the LED array 32 is mounted; and a bracket 15 which is connected with the heat sink 14 and for connecting the heat sink 14 to a casing 12. A rubber washer 40 is disposed in a connection position between the heat sink 14 and the bracket 15. The heat sink 14 has heat dissipation ability for dissipating heat generated by the LEDs 31 to prevent the heat from affecting the luminous efficiency of the LEDs 31. |
