| 摘要 |
Disclosed is an LED lighting device. The LED lighting device, according to an aspect of the present invention, comprises: a printed circuit board formed in a plate structure in which the central portion thereof is open; an LED chip mounted on one surface of the printed circuit board; an air ventilation part that has an opening formed on one end thereof and an air flow passage formed therein for connecting the opening and the central portion of the printed circuit board and is connected, at the opposite end thereof, to the central portion of the printed circuit board; a heat sink coupled to the opposite surface of the printed circuit board to cool heat generated from the LED chip; a cover member that has an air flow hole formed to correspond to the position of the opening and covers a portion of the printed circuit board, a portion of the LED chip, a portion of the air ventilation part, and a portion of the heat sink; and a base that has an air vent formed therein to communicate with the air flow passage and is coupled to the cover member to cover the remaining portions of the printed circuit board, the LED chip, the air vent part, and the heat sink, wherein the heat sink includes a heat dissipation plate that has: a heat absorption part coupled to the opposite surface of the printed circuit board to transfer heat; and a heat dissipation part that has a rectangular shape and is formed to extend from the heat absorption part to discharge heat absorbed by the heat absorption part. |
