PURPOSE: A plate type streetlight device using an LED is provided to reduce the volume and weight of the streetlight by forming a body with a plate shape. CONSTITUTION: A body(1) is detachably installed on a street pole. A front panel(2) is installed on the lower side of the body. A plurality of LED modules(3) is fixed to the front panel by a plurality of heat transmission bars. The heat transmission bars(4) transmits the heat from the LED modules to the body. A light transmissive plate is installed on the lower side of the front panel by a fixing ring. The light transmissive plate transmits the light emitted from the LED modules. A plurality of O-rings(7) is interposed between the body and the front panel, and between the front panel and the light transmissive plate.
