Screen assembly and rear-projection type graphic display device

A rear-projection type graphic display device comprising:

• a screen assembly including:
• a screen having fresnel lenses, a first surface allowing an incoming of an image light therethrough and a second surface allowing an emission of the image light therethrough, the screen having an optical transparency;
• a screen retainer having a third surface whose area is larger than the first surface and the second surface of the screen thereby and which is opposed to the second surface of the screen thereby to hold the second surface, and a fourth surface located on opposite side of the third surface thereby to allow an image formed by the image light incoming through the first surface to be visible through the fourth surface, the screen retainer an optical transparency;
• and
• a light blocking member surrounding respective side surfaces of the screen in the form of a frame, wherein at least part of the light blocking member is arranged so as to project to the side of the first surface of the screen;
• a projection unit emitting the image light based on input signals from an outside;
• a reflection mirror reflecting the image light emitted from the projection unit toward the screen assembly thereby to project an image thereon in enlargement;
• and
• a cabinet on which the screen assembly stands and in which the projection unit and the reflection mirror are accommodated.