| 摘要 |
PURPOSE: A lighting device is provided to arrange a heat sink on the side of a printed circuit board, thereby increasing heat emitting performance. CONSTITUTION: A plurality of LEDs is mounted on one side of a printed circuit board(10). A base(20) fixes a printed circuit board. A heat sink(30) is arranged on a side of the base. A heat pipe connects the base with the heat sink. A rotation unit(50) forms one end of the base or the heat sink. The rotation unit includes an angle controlling unit. A housing is arranged on the outside of the heat sink. An air ventilation unit is formed in the housing. |
