Air supply device in elevator and using method thereof

The invention discloses an air supply device in an elevator and a using method thereof. The device comprises an elevator car, a ceiling is fixedly installed at the position, close to the top, in the elevator car, and a purification air supply mechanism is arranged at the top of the outer portion of the elevator car. The purification air supply mechanism comprises an air supply box, an air supply flexible hose, an air supply main pipe, an air supply branch pipe, an air inlet flexible hose, an air inlet main pipe, an air inlet branch pipe, a drawer, a handle, an air filter screen, a supporting frame, a fan and a blocking strip. According to the air supply device in the elevator, air supplied into the elevator car can be filtered, passenger health is facilitated, the air direction can be adjusted, the air supply device is suitable for various different use environments and higher in practicability, in addition, when the elevator car operates, an excellent damping effect can be achieved onthe air supply box, the