Projector

Abstract

A projector, includes: 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 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 fixed 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, and 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.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

The invention will be described with reference to the accompanying drawings, wherein like numbers reference like elements.

FIG. 1 is a perspective view of a projector according to first and second exemplary embodiments of the invention when seen from an upper front side of the projector;

FIG. 2 is a perspective view of the projector according to the aforesaid exemplary embodiments when seen from a lower rear side of the projector;

FIG. 3 is a schematic illustration of an inner structure of the projector according to the aforesaid exemplary embodiments;

FIG. 4 is an exploded perspective view of an attaching structure according to the first exemplary embodiment;

FIG. 5 is a cross section of the attaching structure according to the first exemplary embodiment;

FIG. 6 is a perspective view showing a lower case and an attaching structure according to the second exemplary embodiment; and

FIG. 7 is a cross section of the lower case and the attaching structure according to the second exemplary embodiment.

Claims

1. 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 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 fixed 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, andan 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.

2. The projector according to claim 1, wherein the attaching member is an insert nut that is inserted in the hole, the insert nut having a cylindrical portion in which a screw hole is formed,the interposed member is a washer that has a hole in which the cylindrical portion is inserted, andthe fixing member is a bolt screwed into the screw hole.

3. The projector according to claim 1, wherein a rising portion is provided on the inner surface of the exterior casing, the rising portion rising from the inner surface, the rising portion corresponding to the outer diameter of the interposed member, the rising portion enclosing the hole.

4. 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 provided with a boss having a hole in which a fixing member that fixes the projector at a predetermined position is inserted, the hole provided with an attaching member; andthe attaching-member disposed inside the hole, the attaching member engaging with the exterior casing and the fixing member inserted in the hole,the boss having,a first lateral portion forming the hole,a second lateral portion formed apart from the first lateral portion by a predetermined distance, the second lateral portion enclosing a periphery of the first lateral portion, anda bridge portion connecting the first lateral portion and the second lateral portion.

5. The projector according to claim 4, wherein the boss is formed in a substantially circular conical shape or a polyhedral pyramid shape, andthe second lateral portion is formed so as to be closer to the first lateral portion as the second lateral portion projects in an out-of-plane direction of the exterior casing.

6. The projector according to claim 4, wherein the boss is formed so as to project in an out-of-plane direction from an outer surface of the exterior casing.

7. The projector according to claim 4, wherein the attaching portion further includinga cylindrical portion that is inserted in the hole, anda flange portion provided on an end of the cylindrical portion so as to project in a direction substantially orthogonal to an axial direction of the cylindrical portion, the flange portion having an outer diameter larger than an inner diameter of the hole, and facing an inner surface of the exterior casing,the projector, further comprising:a washer provided between the inner surface of the exterior casing and the flange portion, the washer having an opening in which the cylindrical portion is inserted, andan outer diameter larger than an outer diameter of the flange portion.

8. The projector according to claim 7, wherein the outer diameter of the washer is at least enough to reach the bridge portion.