Projection curtain is used in teaching

The utility model discloses a projection curtain is used in teaching, retrieve box and curtain including the projection curtain, the inside of projection curtain recovery box is passed through the third pivot and is connected with the curtain rotation, the projection curtain is retrieved the first pivot of passing through of box and is connected with the rotation of dustproof film, the bottom of curtain is provided with the receiver, the third recess has been seted up to the inside of receiver, the inside of third recess is provided with the spring, the spring passes through the fixture blockand is connected with dustproof film. The utility model discloses in, the inside of projection curtain receiver is rotated through first pivot and dustproof film and is connected, and dustproof film is hugged closely with the curtain mutually, sets up the dustproof film of one deck in the middle of curtain that one side relative with the blackboard, can prevent that dust such as chalk dust from tothe pollution of curtain,