Cabinet projection screen with automatic cover-lifting function

A cabinet projection screen with an automatic cover-lifting function, comprising:

• a cabinet body, wherein a cover-lifting mechanism is disposed on the cabinet body, the cover-lifting mechanism comprises a cover plate, a transmission rod, and a cover-plate drive motor, the cover-plate drive motor drives the cover plate to open or close through the transmission rod, an elevator screen is disposed inside the cabinet body, and the elevator screen is aligned with an opening on the cabinet corresponding to the cover plate when the cover plate is opened,
• wherein the elevator screen comprises a projection screen, a scroll, a scroll motor driving the scroll to rotate, and a compression frame, the scroll is disposed inside the cabinet body, the projection screen is wound on the scroll, one end of the compression frame is fixed on a free end of the projection screen and the other end thereof is fixed inside the cabinet body, adjacent support rods are connected through a rotating shaft, an elastic mechanism is installed on the compression frame, and two ends of the elastic mechanism are installed on the adjacent support rods respectively.