JPH11202409A - Projector device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the projector device which is small-sized, small in the number of components, and easily assembled and further equipped with an angle adjusting mechanism of an inexpensive plate member. SOLUTION: A frame member 31 which has an opening 31a is arranged nearby a mirror (plate member) 4. The mirror 31a and frame member 31 are clamped by a nearly U-shaped spring-like member 32. The spring-like member 32 consists of a side part 32a, a 1st expansion part 32b, and a 2nd expansion part 32c. Inside the spring-like member 32, a setscrew 33 is mounted so that it penetrates the frame member 31 one end part abuts on the 1st expansion part 32b and the other end part abuts on the mirror 4. The angle of the mirror 4 is adjusted in directions of A and B and directions of C and D by turning the setwcrew 33.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a projector device such as a liquid crystal projector, and more particularly to a projector device having an improved mechanism for adjusting a plate-like member such as a mirror for reflecting light emitted from a lamp.

[0002]

2. Description of the Related Art Since there is an increasing demand for displaying images on a large screen, projector devices for projecting images on a screen are gradually becoming widespread. FIG. 7 is a diagram showing a general configuration of the projector device. Here, the configuration of the liquid crystal projector is shown, and its operation will be described.

In FIG. 7, light emitted from a lamp 1 is condensed by condenser lenses 2 and 3 and is incident on a cold mirror 4. The light reflected by the cold mirror 4 enters the color separation mirror 5. Of the light incident on the color separation mirror 5, red (R) light passes through the color separation mirror 5 and is incident on the mirror 6. This R light is reflected by the mirror 6 and enters the liquid crystal panel 12.

[0004] The blue (B) / green (G) light is reflected by the color separation mirror 5 and enters the color separation mirror 7. Among the light incident on the color separation mirror 7, the G light is reflected by the color separation mirror 7 and is incident on the liquid crystal panel 13. Of the light that has entered the color separation mirror 7, the B light passes through the relay lens 8, the mirror 9, the relay lens 10, and the mirror 11 to adjust the optical path length to the optical path length of the R light and the G light. Is incident on.

As is well known, a voltage corresponding to an image is applied to the liquid crystal panels 12 to 14, and R, G,
The B lights are respectively modulated. The light of each color output from the liquid crystal panels 12 to 14 is combined by the combining prism 15 and projected on the screen 17 by the projection lens 16. Thus, an image is displayed on the screen 17.

By the way, in this type of projector, even if there is a slight variation in the dimensional accuracy of the optical components, or even if the optical components are slightly displaced, an image displayed on the screen 17 can be displayed. The light from the lamp 1 is irradiated in a range that is about 10% larger than the effective range of the liquid crystal panels 12 to 14 so as not to be chipped. On the other hand, in order to increase the brightness of the lamp 1, it is necessary to make the irradiation range of the light by the lamp 1 as small as possible.

When the range of light irradiation by the lamp 1 is reduced, for example, precision processing of an optical component or mounting of the optical component on an optical base having high rigidity is performed so as to prevent the image from being chipped. Therefore, dimensional accuracy and mounting accuracy of the optical component must be increased. Then, the cost increases, and an inexpensive projector device cannot be provided. Therefore, it is common to provide an angle adjusting mechanism on a mirror such as the cold mirror 4 to adjust the irradiation position of light from the lamp 1.

Here, an example of a conventional mirror angle adjusting mechanism will be described. FIG. 6 is a perspective view showing a mirror angle adjusting mechanism in a conventional projector device. Although FIG. 6 shows the angle adjusting mechanism of the cold mirror 4, the same applies to other mirrors.

In FIG. 6, the cold mirror 4 is fixed to a frame-shaped support member 21 by a spring clamp 22. Near the center of the side surface of the support member 21, a pair of shafts 2
1a is provided. The support member 21 is disposed in a frame-shaped support member 23, and holds the shaft 21 a by a spring bearing 24. Therefore, the support member 21 (that is, the cold mirror 4) is rotatable around the line connecting the pair of shafts 21a in the A and B directions in the figure. Note that a pair of spring members 25 are attached to the support member 23, and the shaft members 21 a of the support member 21 are
Is held down on the side where no is formed.

Further, a pair of shafts 23a are provided substantially at the center of the side of the support member 23 on which the spring bearing 24 is not formed.
Is provided. The support member 23 is provided with a substantially L-shaped cut-and-raised portion 23b. A screw 26 is screwed into the cut-and-raised portion 23b, and the tip of the screw 26 is in contact with the support member 21. By tightening or loosening the screw 26, the cold mirror 4 rotates in the A and B directions about the line connecting the shaft 21a.
The vertical position of the illumination range with respect to the liquid crystal panels 12 to 14 is adjusted by adjusting the angles of the cold mirror 4 in the A and B directions.

The support member 23 is a frame-shaped support member 2.
7, and the shaft 23 a is held by a spring bearing 28. Accordingly, the support member 23 (that is, the cold mirror 4) is rotatable in the C and D directions in the drawing about the line connecting the pair of shafts 23a. The support member 2
A pair of spring members 29 is attached to 7, and the spring members 29 press down the side of the support member 23 on the side where the shaft 23 a is not formed.

Further, the support member 27 is provided with a substantially L-shaped cut-and-raised portion 27b. Cut and raised part 27
A screw 30 is screwed into b, and the tip of the screw 30 is in contact with the support member 23. Tightening or loosening the screw 30 causes the cold mirror 4 to move
It rotates in the C and D directions about the line connecting 3a. The horizontal position of the illumination range with respect to the liquid crystal panels 12 to 14 is adjusted by adjusting the angles of the cold mirror 4 in the C and D directions.

[0013]

The conventional mechanism for adjusting the angle of a plate-like member such as a mirror requires three frame-shaped support members 21, 23, and 27, which makes it difficult to reduce the size. In addition, since the number of parts is large, there is a problem that the number of assembly steps is large and the cost is high.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and provides a projector device having a small, low-cost, easy-to-assemble, and inexpensive plate member angle adjusting mechanism. With the goal.

[0015]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems of the prior art, the present invention provides a first plate-shaped light source arranged in an optical path of light emitted to display an image on a screen. In a projector device provided with a member,
A second plate-like member arranged in the plane direction near the plate-like member, and the first plate-like member and the second plate-like member are held at three places with a predetermined distance therebetween. And at least one holding mechanism in the holding mechanism is provided with a side portion located on a side surface of the first plate-shaped member and the second plate-shaped member, and A first extending portion extending in the surface direction of the second plate-like member, and a second extending portion extending in the surface direction of the first plate-like member from the side portion. A member and a substantially U-shaped spring member sandwiching an end of the second plate member, and the second plate member is mounted inside the spring member by penetrating the second plate member. An end portion abuts on the first extension portion, and the other end portion is provided with a screw abutting on the first plate-shaped member. It is intended to provide that the projector apparatus.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a projector device according to the present invention will be described with reference to the accompanying drawings. FIG. 1 is a perspective view showing a first embodiment of the projector apparatus of the present invention, FIG. 2 is a partial side view for explaining the first embodiment of the projector apparatus of the present invention, and FIG. 1
FIG. 4 is a perspective view showing a second embodiment of the projector of the present invention, and FIG. 5 is a side view for explaining the second embodiment of the projector of the present invention. .

The overall configuration of the projector device of the present invention is as follows.
This is the same as FIG. 7, and the angle adjusting mechanism of the plate-like member such as a mirror is different from the conventional example. In the following description, the angle adjustment mechanism of the cold mirror 4 in FIG. 7 is shown, but the configuration of the present invention can be applied to other mirrors (color separation mirrors 5, 7 and mirrors 6, 9, 11).

<First Embodiment> In FIG. 1, a frame member 31 having an opening 31a is provided near a cold mirror 4.
Are arranged side by side at a predetermined distance in the plane direction.
The ends of the cold mirror 4 and the frame-shaped member 31 are sandwiched by, for example, three substantially U-shaped spring members 32.
The substantially U-shaped spring member 32 is a holding mechanism that holds the cold mirror 4 and the frame member 31 at a predetermined distance from each other. For example, three screw holes 31b are provided at an end of the frame member 31 where the cold mirror 4 does not face, and the frame member 31 is screwed and fixed to an optical base (not shown). A set screw 33 that penetrates the frame-shaped member 31 and whose tip abuts against the cold mirror 4 is mounted inside the spring member 32. The set screw is a round screw having no screw head.

FIG. 2 is an enlarged side view of a portion of the resilient member 32. The spring member 3 will be described with reference to FIG.
2 and the set screw 33 will be described in detail.
In FIG. 2, the top and bottom are illustrated in reverse to FIG. As shown in FIG. 2, the spring member 32 includes side portions 32 a located on the side surfaces of the cold mirror 4 and the frame member 31.
And a first portion extending in the surface direction of the frame-shaped member 31 from the side portion 32a.
And a second extending portion 32c extending in the surface direction of the cold mirror 4 from the side portion 32a.

The first extension 32b is provided with a recess 32b1 for positioning the set screw 33, into which one end of the set screw 33 fits.
The set screw 33 has a 6 not shown here.
Vertical hole-shaped insertion part 3 for inserting an adjusting tool such as a square wrench
3a are formed. The recess 32 of the first extension 32b
A hole 32b2 is formed in b1 to allow the adjustment tool to enter the insertion portion 33a. The set screw 33 is turned by an adjusting tool inserted into the insertion portion 33a through the hole 32b2.

As described above, the set screw 33 penetrates the frame member 31, and the tip 33b is
Is in contact with the inner surface of the The tip 33b of the set screw 33 is rounded so as not to damage the cold mirror 4. Second extension portion 32 of spring member 32
c is bent in a substantially U-shape, and its top 32c1
Is in contact with the outer surface of the cold mirror 4. In the present embodiment, the second extending portion 32c has a substantially rectangular shape. However, the present invention is not limited to this, and the second extending portion 32c may have any convex shape such as forming a convex portion. In addition, this substantially rectangular shape is also included in the convex portion.

The tip 33b of the set screw 33, which is a pressing point on the inner surface side of the cold mirror 4, and the top 32c1, which is a pressing point on the outer surface side of the cold mirror 4, are at positions facing each other via the cold mirror 4. ing. In other words, the tip portion 33b and the top portion 32c1 are connected to the cold mirror 4
At substantially the same position in a direction orthogonal to the surface of the.

First extension 32 of spring member 32
The distance between the concave portion 32b1 of the second b and the top 32c1 of the second extended portion 32c is determined by the distance between the attachments mounted between the first and second extended portions 32b and 32c, that is, the set screw 3
3 from the end on the side of the first extending portion 32b.
Is slightly smaller than the distance to the surface on the side of the second extending portion 32c, so that the resilient member 32 presses and holds the attachment. As described above, the tip portion 33b of the set screw 33 and the top portion 32c1 of the second extending portion 32c are
Since the cold mirror 4 is opposed via the cold mirror 4, even if a pressing force is applied to the cold mirror 4 by the spring member 32, no bending moment is generated in the cold mirror 4.

The angle of the cold mirror 4 can be adjusted by screwing or loosening at least one set screw 33 of the three spring members 32. As shown in FIG. 3, the position of the cold mirror 4 can be displaced from the position shown by the broken line to the position shown by the solid line by screwing the set screw 33 on the left side in the figure with an adjusting tool 34 such as a hex wrench. . At this time, even if the position of the cold mirror 4 changes with respect to the frame member 31, the spring member 32 itself does not change. For this reason, the force applied to the cold mirror 4 can always be kept constant.

According to the principle described above, in the configuration of FIG. 1, when the set screw 33 of the spring member 32 on the rear side in the figure is adjusted, the angle of the cold mirror 4 in the directions A and B in FIG. Adjusted. The liquid crystal panels 12 to 14 are adjusted by adjusting the angles of the cold mirror 4 in the A and B directions.
The vertical position of the illumination range with respect to is adjusted. Thereby, the position (angle) of the cold mirror 4 can be adjusted in a so-called one-axis direction.

When the set screw 33 of the spring member 32 on the front left side in the drawing is adjusted, the angle of the cold mirror 4 in the directions C and D in FIG. 1 is adjusted. The horizontal position of the illumination range with respect to the liquid crystal panels 12 to 14 is adjusted by adjusting the angles of the cold mirror 4 in the C and D directions. Thereby, the position of the cold mirror 4 can be adjusted in the other one axis direction, and the position (angle) can be adjusted in the two axis directions.

The spring member 32 and the set screw 33 on the front right side in the figure are used for adjusting the position of the cold mirror 4 in the surface direction together with the other two spring members 32 and the set screw 33. is there. Therefore, in this embodiment, not only the angle adjustment in the biaxial directions but also the position adjustment in the plane direction are possible. In addition, cold mirror 4
When the position adjustment in the surface direction is not particularly necessary, the set screw 3 in the spring member 32 on the near right side in FIG.
3 may be omitted and, for example, a projection such as a pin may be used. Further, in the first embodiment, the set screws 33 are attached to all of the three spring members 32. However, if the position adjustment in only one axial direction is sufficient, the spring members 32 and the set screws 33 are used. And the other two positions may be separated and held between the cold mirror 4 and the frame member 31 by an arbitrary holding mechanism.

Thus, by adjusting the angle of the cold mirror 4, the optical axis of the lamp 1 can be adjusted arbitrarily, and the position of the illumination range with respect to the liquid crystal panels 12 to 14 shown in FIG. Can be adjusted. Therefore, it is possible to minimize the margin of the light applied to the liquid crystal panels 12 to 14, thereby increasing the luminance, and to provide a high-luminance projector device. Moreover, the adjustment mechanism of the cold mirror 4 using the spring member 32 and the set screw 33 is small, has a small number of parts, is easy to assemble, and can be realized at low cost.

<Second Embodiment> In FIGS. 4 and 5 showing the second embodiment, the same parts as those in FIGS. 1 to 3 are denoted by the same reference numerals, and the description thereof will be omitted as appropriate. In FIG. 4, near the cold mirror 4, a frame-shaped member 3 having an opening 31a is provided.
1 'are arranged side by side at a predetermined distance in the plane direction. The frame-shaped member 31 'is formed with a protruding portion 31c, which is different from the frame-shaped member 31 in FIG. The ends of the cold mirror 4 and the frame-shaped member 31 ′ are sandwiched by, for example, three substantially U-shaped spring members 32. For example, two screw holes 31b are provided at an end of the frame-shaped member 31 opposite to the protruding portion 31c where the cold mirror 4 does not face.

In the first embodiment shown in FIG. 1, set screws 33 are mounted on all three spring members 32.
In the second embodiment, a set screw 33 is attached to the back spring member 32 in the drawing in the same manner as the first embodiment, and a set screw 33 is attached to the two front spring members 32 in the drawing. It is not mounted, and a pin-shaped protrusion 35 described later is located inside the spring member 32. That is, the second embodiment has a configuration in which the position adjustment of the two spring members 32 on the near side in the drawing is omitted.

As in the first embodiment, the set screw 33 penetrates through the frame-shaped member 31, and the tip of the set screw 33 contacts the cold mirror 4. The pin-shaped protrusions 35 are formed on the front and back of the frame-shaped member 31, for example, integrally with the frame-shaped member 31. Of course, the projection 35 may be formed separately from the frame-shaped member 31. One side of the projection 35 is in contact with the first extension 32b of the spring member 32, and the other side is in contact with the cold mirror 4. The protrusion length of the protrusion 35 from the frame member 31 is the length of the set screw 33 protruding from the frame member 31 (the length of the set screw 33−the frame member 31).
Thickness). In other words, the spring member 32 on the far side in the figure to which the set screw 33 is attached,
The interval between the first and second extending portions 32b and 32c between the projection 35 and the spring member 32 on the near side in the drawing is
It is almost the same.

Further, the spring member 3
6 is attached and fixed by a set screw 33. The set screw 33 and the spring member 36
Is a position adjusting mechanism in place of the omitted position adjusting mechanism in the portion of the spring member 32 on the near side in the figure, as described later. The spring member 36 is provided with a screw hole 36a.

The cold mirror 4, the frame member 31 'and the like having such a configuration are fixed to an optical base as shown in FIG. 5, for example. In FIG. 5, the illustration of the spring member 32 is omitted for simplification. As shown in FIG. 5, one end of the frame-shaped member 31 is fitted with a screw 37 in a screw hole 31b, and is fixedly screwed to an optical base 38. The spring member 36 is fitted into the screw 39 in the screw hole 36a, and is screwed and fixed to the optical base 40.

The position adjustment of the cold mirror 4 according to the second embodiment will be described in detail with reference to FIGS. In the configuration of FIG. 4, when the set screw 33 in the spring member 32 on the far side in the figure is adjusted, the cold mirror 4
Is adjusted in the angles in the directions A and B in FIG. The vertical position of the illumination range with respect to the liquid crystal panels 12 to 14 is adjusted by adjusting the angles of the cold mirror 4 in the A and B directions. Thereby, the cold mirror 4 is moved to a so-called 1
The position (angle) can be adjusted in the axial direction.

Further, as shown in FIG.
By screwing or loosening the set screw 33 attached to the above with an adjusting tool 34 such as a hexagon wrench, the entire cold mirror 4 and the frame-shaped member 31 ′ are closed at the end of the frame-shaped member 31 on the screw hole 31 b side. Can be rotated around the center. That is, the set screw 33 mounted on the spring member 36 adjusts the relative positional relationship between the frame member 31 ′ (and the cold mirror 4) and the optical base 40. When the set screw 33 is adjusted, the angle of the cold mirror 4 in the directions C and D in FIG. 4 is adjusted. The horizontal position of the illumination range with respect to the liquid crystal panels 12 to 14 is adjusted by adjusting the angles of the cold mirror 4 in the C and D directions. By this, cold mirror 4
Can be adjusted in another uniaxial direction, and the position (angle) can be adjusted in two axial directions.

When the set screw 33 attached to the spring member 36 is screwed in, the frame member 31 'is displaced from the state shown by the broken line to the state shown by the solid line as shown in FIG. 'Bend slightly. However,
Since the cold mirror 4 is held at three points by one set screw 33 and two projections 35,
No bending moment is generated in the cold mirror 4, and the cold mirror 4 itself does not bend and maintains a flat surface.

In the second embodiment, only the angle adjustment in the two axial directions is performed, and the position adjusting mechanism in the plane direction is omitted. Note that the first embodiment and the second embodiment can be appropriately combined. In the second embodiment, the portions of the two spring members 32 on the near side in the figure do not need to be held by the substantially U-shaped spring members 32 because they are not a position adjusting mechanism. In these two places, the cold mirror 4 and the frame member 31 may be separated and held by another arbitrary holding mechanism.

In this way, by adjusting the angle of the cold mirror 4, the optical axis of the lamp 1 can be adjusted arbitrarily, and the position of the illumination range with respect to the liquid crystal panels 12 to 14 shown in FIG. Can be adjusted. Therefore, it is possible to minimize the margin of the light applied to the liquid crystal panels 12 to 14, thereby increasing the luminance, and to provide a high-luminance projector device. In addition, the spring member 32 and the set screw 3
3, or the spring member 36 and the set screw 3
The adjustment mechanism of the cold mirror 4 by 3 is small, has a small number of parts, is easy to assemble, and can be realized at low cost.

The present invention relates to the cold mirror 4 described above.
The present invention can be applied to all adjustment mechanisms for adjusting the position and angle of a plate-shaped member arranged in an optical path of light emitted for displaying an image on a screen without being limited to a mirror such as a mirror. . In the present embodiment, the frame-shaped member 31 having the opening 31a is used. However, the mirror 31 that does not need to transmit light, that is, the cold mirror 4 and the mirrors 6, 9, 11 in FIG. May not be provided. Therefore, what is necessary is just a plate-shaped member to be arranged in the plane direction near a plate-shaped member such as a mirror. However, since the cold mirror 4 reflects visible light and transmits infrared light, the frame-shaped member 31 having the opening 31a is provided to improve heat radiation and to prevent the cold mirror 4 from being affected by heat. It is more preferable to use.

[0040]

As described above in detail, the projector device of the present invention comprises a second plate-like member arranged in the plane direction near a first plate-like member such as a mirror, and a first plate-like member. Three holding mechanisms for holding the plate-shaped member and the second plate-shaped member at three locations apart from each other by a predetermined distance are provided, and at least one holding mechanism in the holding mechanism is provided with the first plate-shaped member and the first plate-shaped member. A side portion located on a side surface of the second plate-like member, a first extending portion extending from the side portion in a surface direction of the second plate-like member, and a surface direction of the first plate-like member from the side portion A second extending portion extending to the first plate-like member and a substantially U-shaped spring-like member sandwiching the ends of the first plate-like member and the second plate-like member. The second screw is mounted so as to penetrate the second plate-shaped member, one end of which is in contact with the first extended portion, and the other end of which is in contact with the first plate-shaped member. Since it is configured provided with a small, a reduced number of parts, assembly is easy, it is possible to provide an angle adjustment mechanism of the plate-like member such as a cheap mirror.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a first embodiment of the present invention.

FIG. 2 is a partial side view for explaining the first embodiment of the present invention.

FIG. 3 is a side view for explaining the first embodiment of the present invention.

FIG. 4 is a perspective view showing a second embodiment of the present invention.

FIG. 5 is a side view for explaining a second embodiment of the present invention.

FIG. 6 is a perspective view showing a conventional example.

FIG. 7 is a diagram illustrating a general configuration of a projector device.

[Explanation of symbols]

 4 Cold mirror (first plate member) 5, 7 Color separation mirror (first plate member) 6, 9, 11 Mirror (first plate member) 31 Frame member (second plate member) 31a opening 32 spring member (first spring member) 32a side portion 32b first extension portion 32b1 concave portion 32b2 hole 32c second extension portion 33 set screw 34 adjuster 35 protrusion 36 spring member (second member) Spring member) 37, 39 Screw 38, 40 Optical base

Claims (10)

[Claims] 1. A projector device comprising a first plate-shaped member arranged in an optical path of light emitted to display an image on a screen, wherein a plane direction is provided near the first plate-shaped member. A second plate-shaped member arranged side by side, and three holding mechanisms for holding the first plate-shaped member and the second plate-shaped member at three locations separated by a predetermined distance, At least one holding mechanism in the holding mechanism is arranged such that a side portion located on a side surface of the first plate-shaped member and the second plate-shaped member, and a side direction of the second plate-shaped member from the side portion. A first extending portion extending from the side portion and a second extending portion extending in a surface direction of the first plate-like member;
And a substantially U-shaped spring member sandwiching an end of the second plate member, and is mounted inside the spring member by penetrating the second plate member. A projector device comprising a screw having one end abutting on the first extension portion and the other end abutting on the first plate-shaped member. 2. A recess in which the screw fits is formed in the first extending portion where one end of the screw contacts, and a hole for inserting an adjusting tool for turning the screw is formed in the recess. The projector device according to claim 1, wherein: 3. The projection according to claim 1, wherein a protrusion is formed at a portion of the second extension portion opposite to a portion where the screw contacts the first plate-shaped member. Projector device. 4. The projector according to claim 1, wherein the first plate-like member is a mirror. 5. The apparatus according to claim 1, wherein said first plate-shaped member is a mirror, and said second plate-shaped member is a frame-shaped member having an opening and formed in a frame shape. 4. The projector device according to any one of 1 to 3. 6. A projector device comprising a first plate-shaped member arranged in an optical path of light emitted to display an image on a screen, wherein a plane direction is provided near the first plate-shaped member. A second plate-shaped member arranged side by side, and three holding mechanisms for holding the first plate-shaped member and the second plate-shaped member at three locations separated by a predetermined distance, At least one holding mechanism in the holding mechanism is arranged such that a side portion located on a side surface of the first plate-shaped member and the second plate-shaped member, and a side direction of the second plate-shaped member from the side portion. A first extending portion extending from the side portion and a second extending portion extending in a surface direction of the first plate-like member;
And a substantially U-shaped first spring member sandwiching an end of the second plate member, and the second plate member inside the first spring member. A first screw having one end abutting on the first extension portion and the other end abutting on the first plate-like member; and one end being an optical base. And a second spring-like member having the other end fixed to an end of the second plate-like member; and adjusting a relative positional relationship between the second plate-like member and the optical base. A projector device comprising: a second screw that performs the following. 7. A concave portion in which the first screw fits is formed in the first extending portion where one end of the first screw contacts, and the first screw is turned into the concave portion. 7. The projector device according to claim 6, wherein a hole for inserting the adjusting tool is formed. 8. A projection formed on a portion of the second extension portion opposite to a portion where the first screw comes into contact with the first plate-shaped member.
3. The projector device according to claim 1. 9. The projector according to claim 6, wherein the first plate-like member is a mirror. 10. The first plate-like member is a mirror,
9. The projector according to claim 6, wherein the second plate-shaped member is a frame-shaped member having an opening and formed in a frame shape.