| 摘要 |
PURPOSE: An indoor LED lighting device is provided to improve heat radiating performance by controlling inner air to directly contact an LED module arranged at the inside of a heat sink. CONSTITUTION: A frame (10) is mounted at a ceiling opening part. A heat sink (20) is supported by the frame. The heat sink is arranged inside the ceiling. Multiple LED modules (30) are mounted at the inner surface of the heat sink. An air passage is formed at the frame. |
