Sun visor device for shading the rear window of an automobile

A sun visor device for shading the rear window of an automobile, said automobile having an inside rubber rib protruded between the roof panel of said automobile and said rear window, and a platform interposed between said rear window and the back of the rear seat of said automobile, said sun visor device comprising:

• a stay rod having a first and a second end;
• a shade roller comprising a retractable shade body and an elongated housing for receiving said retractable shade body, said shade body having a pull member connected to the end of said retractable shade body so that said retractable shade body can be pulled out from said elongated housing by said pull member;
• a seat having a bottom side and a top side, said bottom side having a plurality of protrusions formed thereon so as to achieve frictional contact between said seat and said platform of said automobile, said top side having a cavity for receiving the first end of said stay rod and a concave portion adapted to transversely hold and retain said elongated housing of said shade roller;
• and
• a gripping member having a top side and a bottom side, said top side of said gripping member being shaped to abut against said rib of said automobile, said bottom side of said gripping member having a cavity for receiving the second end of said stay rod and a concave portion adapted to retain said pull member of said shade roller;
• whereby said shade body can be pulled out from said shade roller and stretched between said seat and said gripping member which are, respectively, fixedly disposed on the platform and the inside rubber rib and biased by said stay rod which is connected therebetween.