Vertical wind energy utilization device capable of dynamically changing directions of fan blades

The invention discloses a vertical wind energy utilization device capable of dynamically changing the direction of a fan blade, which is used in the field of wind power generation, solves the problems of low wind energy utilization rate and too large wind resistance against wind of a vertical wind power generation device, reduces the manufacturing, installation and maintenance cost of the wind power generation device, and is convenient to popularize. The fan blades are vertically arranged and hung on the radiation support and can rotate along the shaft on the hanging side, the fan blades are tightly attached to the support to provide rotating pushing force in the downwind process, the fan blades are opened to be consistent with the wind direction in the upwind process, and wind resistance is reduced. In addition, when the fan blades rotate, the horizontally-extending wind plate is driven to rotate, the wind plate is vertical and large in wind area in the downwind direction, and the wind plate is horizontal an