Vehicle-mounted sunscreen device for automobile

The invention discloses a vehicle-mounted sunscreen device for an automobile, and aims to provide the vehicle-mounted sunscreen device which is large in sunscreen area, does not need to be disassembled, is of a hard top structure after being stored, and is also suitable for realizing sunscreen of a vehicle running at a low speed. The device comprises a base, an opening mechanism and sunscreen cloth. The opening mechanism is arranged on the base, the opening mechanism is used for opening or folding the sunscreen cloth, the sunscreen cloth is rectangular after being completely unfolded, rectangular movable sunscreen plates are arranged at the four corners of the sunscreen cloth, the four rectangular movable sunscreen plates are connected with the opening mechanism, and the opening mechanism is used for opening or folding the sunscreen cloth. And after the opening mechanism drives the four rectangular movable sunscreen plates to draw close to the center of the sunscreen cloth, the four rectangular movable sunscr