| 摘要 |
PURPOSE: An LED lighting device is provided to control an irradiation range of a light according to installation position or environment by changing an irradiation angle of the light through rotation of a lighting part. CONSTITUTION: A lighting part(10) includes an LED lamp, an LED substrate, and a window. The window covers the LED substrate. A heat dissipation part(20) includes a heat dissipation plate and a plurality of heat dissipation fins. The heat dissipation fins are arranged on the heat dissipation plate with various heights. A fixing frame(30) fixes the lighting part and the heat dissipation plate by a coupling bolt. A coupling part(40) is arranged in the center of the heat dissipation part, and includes a guide groove and a guide rib. A supporting bar(50) is coupled in both sides of the guide groove of the coupling part. A fixing part(60) is coupled with the supporting bar. A curved elongated hole is formed in the center of the fixing part. |
