A protective clothing, comprising, a protective clothing comprising a cavity and an inflating/deflating device, the inflating/deflating device being in communication with the cavity to so as to charge the cavity with air or discharge the air from the cavity, the inflating/deflating device comprises:
- an outer cylinder on which at least one first hole is provided;
- an inner cylinder arranged within the outer cylinder, provided with at least one second hole, and being capable of sliding between a first position at which the second hole is aligned with the first hole, and a second position at which the second hole is deviated from the first hole and is closed by the inner wall of the outer cylinder;
- a blade provided in the inner cylinder and a motor driving the blade;
- a biasing device for biasing the inner cylinder toward the first position;
- wherein the inner cylinder further comprises a third opening on which a one-way valve is provided so as to only allow pressurized gas to flow from the inner cylinder through the third opening to the outside, while to prevent the pressurized gas from flowing in an opposite direction;
- wherein the outer cylinder is provided with a guide slot and the inner cylinder is provided with a guide pin that cooperates with the guide slot to guide the sliding of the inner cylinder within the outer cylinder between the first position and the second position, and
- wherein the guide slot is inclined with respect to a longitudinal direction of the outer cylinder so as to guide the inner cylinder to move and rotate.