Air curtain cabinet with curtain capable of automatically ascending and descending at night

The utility model relates to the technical field of air curtain cabinets, and discloses an air curtain cabinet capable of automatically lifting at night, which comprises an air curtain cabinet body, a connecting device and a heat dissipation device, and is characterized in that the connecting device is arranged on one side of the air curtain cabinet body and comprises a case, a storage battery fixedly mounted at one end of the air curtain cabinet body, and a motor fixedly mounted on the outer wall of the case; the motor is fixedly installed on the inner wall of the case, the rotating rod is fixedly connected with the output end of the motor through a coupler, the check block is fixedly arranged at one end of the rotating rod in a sleeving mode, the protective curtain is tied to one end of the rotating rod, the curtain rod is fixedly installed at the bottom end of the protective curtain, and the L-shaped support is fixedly installed on the outer wall of the air curtain cabinet body. The air curtain cabinet sol