Traditional Chinese medicinal material seedling greenhouse with extremely cold protection function

The traditional Chinese medicine seedling greenhouse with the extremely cold protection function comprises a fixing plate, a supporting frame is welded to the top of the fixing plate, a heat dissipation device is arranged on one side of the supporting frame, the heat dissipation device comprises a driving motor, a fixing block, fan blades, a fixing frame and fixing bolts, the driving motor is arranged on the top of the supporting frame, and the fan blades are arranged on the fixing frame. A fixing block is connected to one side of the driving motor through an output shaft, fan blades are annularly welded to the outer wall of the fixing block, fixing frames are symmetrically and movably installed on the outer walls of the fan blades, fixing bolts are in threaded connection with the outer walls of the fixing frames and penetrate through the fixing frames, and a forming frame is transversely welded to the top of the supporting frame. According to the traditional Chinese medicinal material seedling greenhouse wit