| 摘要 |
PURPOSE: A LED lighting device is provided to increase the cooling efficiency of the heat which is generated from a light emitting unit, by moving the air to a longitudinal direction of a heat pipe unit by an air fluid member and increasing the thermal transfer efficiency by copper-coating an interval between a substrate and heat spreader. CONSTITUTION: A light emitting unit(20) comprises a substrate(21) and a LED device(22) which is installed at one side of the substrate. A heat spreader(40) is fixed to the other side of the substrate and disperses the light which is heated from the light emitting unit. A heat pipe unit(60) is combined to the heat spreader and is extended to the outside. An air cooling unit(80) sprays the air on the heat pipe unit in a longitudinal direction and cools the air. |
