Natural ventilation skylight of photovoltaic greenhouse

A natural ventilation skylight of a photovoltaic greenhouse comprises a photovoltaic panel and a window frame, and the window frame is of a frame-shaped structure defined by an upper transverse rod, a lower transverse rod and two side rods. The upper end of the photovoltaic panel is connected with the upper end of the window frame, and the photovoltaic panel and the window frame are arranged in an inverted-V shape. A window sash is arranged in the window frame, and the two sides of the window sash are connected with side rods of the window frame through rotating shafts respectively. The distance between the rotating shaft and the upper end of the window sash is smaller than that between the rotating shaft and the lower end; a pull rope is arranged on the inner side face of the upper end of the window sash, and the free end of the pull rope extends downwards. When the upper portion of the window sash rotates downwards, a hot-pressing air channel is formed between the photovoltaic panel and the window sash. The