Quadratic element projector capable of protecting lens

The utility model discloses a quadratic element projector capable of protecting a lens, which comprises a projector shell, a base, a lens body, heat dissipation holes and an operation panel, the base is mounted on the lower surface of the projector shell, the lens body is mounted on the outer wall of one side of the projector shell in a penetrating manner, and the heat dissipation holes are formed in the outer wall of the other side of the projector shell. Heat dissipation holes are evenly formed in the outer walls of the two sides of the projector shell, a movable plate is connected to the end, close to the outer wall of the projector shell, of the handle, and a cleaning wiper is installed on the outer wall of the movable plate. According to the quadratic element projector capable of protecting the lens, when the projector is used outdoors, the movable frame I and the movable frame II are reversely rotated, so that the protective cover between the movable frame I and the movable frame II is pulled open, and