To provide a wall surface structure used also for an illuminator arranged so that an image can be projected onto a wall panel and also writing can be done with a marker, etc., on the surface of the wall panel.

This wall surface structure used also for an illuminator 10 is constructed by being provided with a vertical and plate-like wall panel 11 made of a transparent material, and a light source 12 which is arranged in the rear of the wall panel 11 and emits illumination light to the wall panel 11, arranging a light diffusing surface on the wall panel 11, and roughing at least a part of the front surface for finishing.