| 摘要 |
A ventilation unit of which a filter is automatically changed includes one or more ventilating openings, a rotary shaft installed in the ventilating opening, and a frame including an opening and closing plate opening and closing the ventilating opening with the rotation of the rotary shaft by being included in the rotary shaft. A driving unit includes a motor rotating the rotary shaft in a normal direction or in a reverse direction according to an opening signal or a closing signal by being connected to the rotary shaft. A driving control unit is individually connected to the rotary shaft and the motor and controls the rotation direction of the motor by stopping the rotation of the rotary shaft converting one signal among the opening signal and the closing signal into the other signal when the rotary shaft is rotated at a predetermined angle. The filter unit is arranged to be adjacent to the frame and includes a filter supply unit supplying the filter to cover the ventilating opening by rotating a first roller on which the filter is wound; a filter storage unit storing the filter in a second roller by winding the same after use; and an automatic filter change unit automatically changing the stored filter. |
