Patent ID: 7891827

Claim:
A projector, comprising: a light source; an optical modulator that modulates a light beam emitted from the light source to form an optical image; a projection optical device that projects the formed optical image; an exterior casing that accommodates the light source, the optical modulator and the projection optical device, the exterior casing being made of a synthetic resin and provided with a hole in which a fixing member fixing the projector at a predetermined position is inserted, the hole penetrating the exterior casing; an attaching member engaged with the fixing member that is inserted through the hole at a position corresponding to the hole in the exterior casing, the attaching member having a flange portion facing an inner surface of the exterior casing, the flange portion having an outer diameter larger than an inner diameter of the hole; an interposed member disposed between the inner surface of the exterior casing and the flange portion, the interposed member having an outer diameter larger than an outer diameter of the flange portion; and a plurality of ribs rising from the inner surface of the exterior casing, dimensions of the ribs corresponding to the outer diameter of the interposed member, the ribs radially extending from a center of the hole.