Split type windproof shading ventilation hood

The split type windproof shading ventilation hood comprises a hood body and a shading assembly arranged at an air inlet of the hood body, the hood body comprises a left right-trapezoid side plate, a right right-trapezoid side plate and a windproof hood upper top plate, the windproof hood upper top plate is connected with the top edges and the bevel edges of the left side plate and the right side plate in a bent covering mode, and the right-angle edge portions of the left side plate and the right side plate are air inlets of the hood body. The bottom edges of the left side plate and the right side plate are fixedly connected through a windshield inner side plate, arched windshield lower supports are arranged in the portions, below the windshield inner side plate and below the windshield upper top plate, of the cover body respectively, and an opening is formed in the portion, below the windshield upper top plate, of the cover body. A plurality of light shield sheets penetrated by the lead screws are arranged be