The present invention is characterized in that the heater is quickly activated by closing the curve until the engine is normally warmed up, and the heater is heated to remove the moisture in the front window, thereby improving the performance of the heater. In addition, A radiator shutter 80 including a plurality of opening and closing plates 70 is provided close to the radiator 10 and a driving motor 100 is connected to the radiator shutter 8, The cooling water temperature sensor 110 and the relay 120 are connected to each other and the driving motor 100 is connected to the relay 120. The cooling water temperature sensor 110 and the relay 120 are connected to each other, When the temperature is lower than the proper temperature, the driving motor 100 is rotated in the forward direction to close the radiator shutter 80. When the temperature is the proper temperature, the driving motor 100 is rotated in the reverse direction The radiator shutter 80 is opened.
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