JP6303517B2 - Projector support device - Google Patents

Description

  The present invention relates to a projector support device.

  Conventionally, a projector that modulates light emitted from a light source in accordance with image information and projects the modulated light onto a projection surface such as a screen is known. In addition, a technology is proposed that is provided with a device that supports the projector and can be installed on a ceiling or the like (see, for example, Patent Document 1), or a technology that allows a plurality of projectors to be arranged in a stacked manner. Yes.

The projector support device (projector ceiling suspension device) described in Patent Literature 1 includes a ceiling-side fixing member attached to the ceiling side, a projector-side fixing member attached to the projector side, a ceiling-side fixing member, and a projector-side fixing member. A connecting member to be connected and a posture adjusting device for adjusting the posture of the projector.
The connecting member has a tubular portion, and the attitude adjustment device has three adjustment mechanisms that can adjust the rotation angles of the projector around the x-axis, y-axis, and z-axis, respectively. It is provided independently.

JP 2009-204902 A

However, in the technique described in Patent Document 1, since the three adjustment mechanisms are arranged in the central portion on the ceiling side of the projector, the projector and the ceiling are sufficiently separated from each other in order to operate the adjustment mechanism. It is necessary to let
In addition, when the projector support device is configured so that a plurality of projectors can be stacked using the technique described in Patent Document 1, the projector support device is configured to have members above and below the projector, for example. The In the case of this configuration, since it is necessary to sufficiently separate the projector and the upper member, the projector support device has a problem that the size in the direction in which the projectors are stacked increases. Along with this, there is a problem that the weight of the projector support device increases.

  SUMMARY An advantage of some aspects of the invention is to solve at least a part of the problems described above, and the invention can be implemented as the following forms or application examples.

  Application Example 1 A projector support device according to this application example is a projector support device that supports a projector having a projection optical system, and a main body frame in which the projector can be disposed, the main body frame, and the projector And an adjustment mechanism that adjusts the attitude of the projector, and the main body frame includes an adjustment mechanism support portion that supports the adjustment mechanism, and the adjustment mechanism is fixed to the adjustment mechanism support portion. A first support portion rotatably supported on the base portion around the first central axis, and a second central axis extending in a direction perpendicular to the first central axis. A second support part rotatably supported by the first support part; and the projector is held and extends in a direction perpendicular to the first central axis and the second central axis A third support portion that is rotatably supported by the second support portion around the third central axis, and the first support portion, the second support portion, and the third support portion are individually rotated. An adjusting portion that is moved, wherein the adjusting portion extends from the first support portion in a direction intersecting the first central axis, and from the second support portion to the first center. A second extending portion extending in a direction intersecting the axis; a third extending portion extending from the third support portion in a direction intersecting the first central axis; and the first central axis. A first operating portion capable of pushing and pulling in the direction of the distal end side of the first extending portion in a direction; and pushing and pulling in the distal end side of the second extending portion in a direction intersecting the second central axis. A second operation unit capable of being pushed and a second operation unit capable of pushing out and retracting the tip end side of the third extending portion in a direction intersecting the third central axis. An operating unit, characterized in that it comprises a.

According to this configuration, the projector is held by the third support portion and is supported by the adjustment mechanism support portion of the main body frame via the second support portion and the first support portion. And the 1st support part, the 2nd support part, and the 3rd support part are constituted so that it may rotate individually centering on the central axis which each extends in three directions by the adjustment part. That is, the attitude of the projector is changed according to the direction in which each support portion (the first support portion, the second support portion, and the third support portion) is rotated. Thereby, since the inclination of the three directions of the projector can be adjusted independently, it is possible to provide a projector support device that can easily adjust the distortion of the image projected on the projection surface.
The adjustment unit includes a first operation unit, a second operation unit, and a third operation unit provided on the distal ends of the first extension unit, the second extension unit, and the third extension unit, The 1 support part, the 2nd support part, and the 3rd support part are rotated by pushing and pulling in the 1st extension part, the 2nd extension part, and the 3rd extension part by each operation part. Accordingly, even in a large size projector, the first operation unit, the second operation unit, and the third operation unit can be arranged near the outer periphery of the projector, so that the posture adjustment operation can be easily performed.
In addition, when the projector support device is configured to have members above and below the projector so that a plurality of projectors can be stacked (stacked arrangement), the user's hand does not enter between the upper member and the projector. Even if narrowed as described above, the first operation unit, the second operation unit, and the third operation unit can be operated. Therefore, it is possible to provide a projector support device that can be stacked and restrained in the thickness direction (vertical direction).

  Application Example 2 In the projector support device according to the application example described above, it is preferable that the first central axis, the second central axis, and the third central axis are provided at positions shifted from the center of gravity of the projector. .

If the center of gravity of the projector is positioned on the central axis on which the projector rotates, the balance of the projector becomes unstable like a seesaw when adjusting the posture, so that it may be difficult to perform the posture adjustment operation. In the configuration in which the central axis is along the horizontal plane, it becomes more unstable.
According to this configuration, since the first central axis, the second central axis, and the third central axis are provided at positions shifted from the center of gravity of the projector, it is possible to adjust the attitude of the projector in a stable state. Become.

  Application Example 3 In the projector support device according to the application example described above, in a posture in which the projector support device is installed, the first central axis extends in a direction along a vertical direction, and the second central axis is It is preferable that the third central axis extends in a direction perpendicular to a vertical plane passing through the optical axis of the projection optical system.

According to this configuration, the adjustment mechanism is arranged in the order of the first support portion, the second support portion, and the third support portion from the adjustment mechanism support portion side. Then, the projector adjusts the angle in the left-right direction with respect to the projection surface (horizontal rotation adjustment) when the first support portion is rotated, and rotates the optical axis of the projection optical system when the second support portion is rotated. When the angle in the rotation direction as the center is adjusted (horizontal roll adjustment) and the third support portion is rotated, the angle in the vertical direction with respect to the projection plane is adjusted (tilt adjustment).
Accordingly, the adjustment mechanism can be downsized by reducing the rotation range of the second support portion located between the first support portion and the third support portion. Therefore, it is possible to provide a projector support device including an adjustment mechanism that can be downsized by configuring a rotation range of horizontal rotation adjustment and tilt adjustment that is considered to be frequently used to be larger than a rotation range of horizontal roll adjustment.

  Application Example 4 In the projector support device according to the application example, the first extension portion extends in a first direction intersecting the first central axis, and the second extension portion and the third extension. The part preferably extends in a second direction intersecting the first central axis and the first direction.

  According to this configuration, since the first extending portion, the second extending portion, and the third extending portion extend in the above-described direction, the first operating portion is the first orthogonal to the first central axis. The second operating part and the third operating part are arranged in a second direction perpendicular to the first central axis. Thus, the user can adjust the orientation of the projector in the three directions by operating the projector support device from the two directions. Therefore, it is possible to simplify the posture adjustment work in the three directions of the projector.

  Application Example 5 In the projector support device according to the application example described above, it is preferable that the third support part has an opening in which at least a part of the second support part is disposed.

  According to this configuration, at least a part of the second support portion is disposed in the opening of the third support portion, so that the adjustment mechanism can be thinned.

  Application Example 6 In the projector support device according to the application example, it is preferable that the third support portion includes a frame that forms the opening, and the frame is a tubular member having a rectangular cross section.

  According to this structure, since the 3rd support part is comprised by the tubular frame mentioned above, even if it provides an opening part, it can be set as the member which raised the intensity | strength. Therefore, an adjustment mechanism that suppresses an increase in thickness and can reliably hold a heavy projector is possible.

  Application Example 7 In the projector support device according to the application example, the first operation unit is fixed to the adjustment mechanism support unit, extends in a direction intersecting the first central axis, and has a screw groove. A guide shaft, a first guide portion that is fixed to the distal end side of the first extension portion, and has an insertion hole through which the first guide shaft is inserted, and is screwed into the first guide shaft, and the first guide A second guide shaft that is fixed to the first support portion, extends in a direction intersecting the second central axis, and has a screw groove. A second guide portion fixed to the distal end side of the second extension portion and having an insertion hole through which the second guide shaft is inserted; and screwed into the second guide shaft; A pair of dial parts to be sandwiched, and the third operation part is fixed to the second support part A third guide shaft extending in a direction intersecting with the third central axis and having a thread groove, and an insertion hole fixed to the distal end side of the third extension portion and through which the third guide shaft is inserted. It is preferable to include a third guide portion having a pair of dial portions that are screwed to the third guide shaft and sandwich the third guide portion.

According to this configuration, the first guide shaft is fixed to the adjustment mechanism support portion, and the first guide portion is provided in the first extension portion extending from the first support portion. The first guide part is sandwiched between a pair of dial parts screwed to the first guide shaft. Accordingly, when one of the pair of dial parts sandwiching the first guide part is rotated and separated from the first guide part, the first guide part can be moved toward the one dial part. Therefore, the user pushes or pulls in the first guide portion, that is, the first extension portion, in accordance with the rotating dial portion of the pair of dial portions in the first operation portion. Can be rotated.
Further, the amount of rotation of the first support portion can be adjusted according to the amount of rotation of the dial portion. And the position of the rotated 1st support part can be maintained by fastening another dial part to the 1st guide part side after rotation of a 1st support part.
Also in the second operation unit and the third operation unit, the second support unit and the third support unit can be rotated by the same operation as the first operation unit.
Therefore, it is possible to easily adjust the inclination of the three directions of the projector by a simple operation of rotating the pair of dial portions and pushing and pulling in the first guide portion, the second guide portion, and the third guide portion. .

  Application Example 8 In the projector support device according to the application example described above, each of the pair of dial portions in the first operation unit, the second operation unit, and the third operation unit has a spherical surface on the side facing each other. Each of the first operating portion, the second operating portion, and the third operating portion is provided with a pair of engaging portions that are slidably engaged with the spherical portion. Each of the pair of dial portions in the first operation portion, the second operation portion, and the third operation portion has a movable member, and the first guide portion and the second operation portion are interposed via the pair of movable members. It is preferable to sandwich the guide part and the third guide part.

The first operating portion is connected to the first support portion via the first extension portion and the first guide shaft is connected to the adjustment mechanism support portion, so that the first support portion rotates. Then, since the first guide portion moves relative to the first guide shaft, torsional stress is applied to the dial portion and the first guide portion in a configuration that does not include a movable member. Similarly, in a configuration without a movable member, when the second support portion is rotated, torsional stress is applied to the dial portion and the second guide portion in the second operation portion, and the third support portion rotates. When moved, torsional stress is applied to the dial portion and the third guide portion in the third operation portion.
According to this configuration, each of the first operation unit, the second operation unit, and the third operation unit includes the pair of movable members, and the dial unit and the movable member are configured to be slidable on a spherical surface as described above. Therefore, even when the first support portion, the second support portion, and the third support portion are rotated, the twist applied to the dial portion, the first guide portion, the second guide portion, and the third guide portion. It is possible to suppress the stress. Therefore, it is possible to suppress the deterioration of the adjustment mechanism and smoothly rotate the first support portion, the second support portion, and the third support portion.

1 is a perspective view showing a projector support device according to an embodiment and a projector supported by the projector support device. The perspective view which shows the adjustment mechanism support part in the adjustment mechanism and main body frame of this embodiment. It is the disassembled perspective view of the adjustment mechanism of this embodiment, and the figure seen from diagonally forward. It is the disassembled perspective view of the adjustment mechanism of this embodiment, and the figure seen from back diagonally. FIG. 2 is a plan view of the projector support device of the present embodiment and a projector supported by the projector support device. Sectional drawing which shows a part of 1st operation part in the 1st reference state of this embodiment. The top view which looked at the projector support apparatus of this embodiment and the projector supported by the projector support apparatus from upper direction. Sectional drawing which expanded the dial part vicinity in the 1st operation part of Fig.7 (a). The top view which looked at the projector supported by the projector support apparatus of this embodiment and the projector support apparatus from the front. The top view which looked at the projector supported by the projector support apparatus of this embodiment and the projector support apparatus from the right side.

Hereinafter, a projector support device according to the present embodiment will be described with reference to the drawings.
The projector support device of this embodiment has a function of supporting the projector while protecting the projector, and a function of adjusting the attitude of the projector.
The projector and the projector support apparatus according to the present embodiment are configured to be capable of a horizontal posture in which the projector projects a horizontally long image on the projection surface and a vertical posture in which a vertically long image is projected on the projection surface.

In addition, the projector and the projector support device of the present embodiment are configured to be installed in a horizontal position and a vertical position in a stationary position that is installed on an installation surface such as a desk and a ceiling-mounted installation that is suspended from a ceiling or the like. The orientation of the projector is the same between the stationary installation and the ceiling installation.
In addition, the projector support device of the present embodiment is configured to be able to overlap a plurality of projectors and to be arranged in a stacked state.

FIG. 1 is a perspective view showing the projector support device 1 in the horizontal orientation and the projector 100 supported by the projector support device 1.
Although a detailed description is omitted, the projector 100 includes a light source, a light modulation device that modulates light emitted from the light source, and a projection lens as a projection optical system that projects the modulated light as shown in FIG. 110 and an exterior housing 120 that houses these components. The projector 100 modulates the light emitted from the light source according to the image information, and enlarges and projects the modulated light on a projection surface such as a screen. In the following, for the convenience of explanation, in the horizontal installation, the direction of light emitted from the projector 100 is forward (+ Y direction), the direction against gravity is upward (+ Z direction), and the right side when viewed from the projection plane side is right (+ X direction).

The exterior housing 120 is composed of a plurality of members, an upper case forming an upper part and a lower case forming a lower part.
As shown in FIG. 1, an opening is formed at the center of the front surface of the exterior housing 120, and the tip of the projection lens 110 is exposed from this opening.
A pair of handles 121 are provided on the upper case of the exterior housing 120.
The pair of handles 121 are parts that are gripped by the user when the projector 100 is carried. The pair of handles 121 are substantially parallel to each other and extend along the front-rear direction, and a gap through which a user's finger can be inserted is provided at the center of each of the handles 121 between the upper case and the upper case.

[Configuration of projector support device]
As shown in FIG. 1, the projector support device 1 includes a support main body 2 having a main body frame 2 </ b> A, and an adjustment mechanism 3 that connects the main body frame 2 </ b> A and the projector 100 and adjusts the attitude of the projector 100.

The support main body 2 includes a first leg portion 22, a second leg portion 23, and a stack coupling portion 24 in addition to the main body frame 2A.
The main body frame 2 </ b> A includes a protection portion 21 formed of a pipe-like member and an adjustment mechanism support portion 25 that supports the adjustment mechanism 3.
The protection unit 21 is formed in a size such that the projector 100 is disposed inside. The protection unit 21 connects an annular lower protection unit 211 positioned below the projector 100 along the installation surface, an upper protection unit 212 positioned above the projector 100, and the lower protection unit 211 and the upper protection unit 212. A plurality of connecting portions 213 extending in the vertical direction is provided.
The lower protection part 211 has a front part, a rear part, and left and right side parts, and is formed in a rectangular shape in plan view. The upper protection part 212 faces the front part and the left and right side parts of the lower protection part 211. It has a front part and left and right side parts.

The first leg portion 22 is a member that supports the projector support device 1 when the projector support device 1 is installed on a desk or the like in a horizontal posture, and is disposed at the four corners of the lower protection portion 211.
The second leg portion 23 is a member that supports the projector support device 1 when the projector support device 1 is installed on a desk or the like in a vertical orientation, and is a lower protection located on the left side (−X side) of the protection unit 21. Two pieces are arranged in each of the part 211 and the upper protection part 212.

  The stack coupling unit 24 is a member that connects the upper and lower projector support devices 1 when the plurality of projector support devices 1 are stacked, and a plurality of stack connection units 24 are arranged in the upper protection unit 212.

  The adjustment mechanism support portion 25 has a function of supporting the adjustment mechanism 3, and as shown in FIG. 1, the four columnar portions 25F, 25B, and 25L, which are tubular members whose cross sections extend along a straight line having a rectangular shape. 25R are combined by welding or the like. Specifically, the adjustment mechanism support portion 25 includes a columnar portion 25F positioned on the front side and a columnar portion 25B positioned on the rear side bridged on the left and right side portions of the upper protection portion 212, and a columnar portion 25R positioned on the right side, and The columnar portion 25L located on the left side is configured by being bridged with the columnar portions 25F and 25B. In addition, the cross-sectional shape of the columnar portions 25F, 25B, 25L, and 25R is not limited to a rectangle, and may be a circle.

  The adjustment mechanism 3 is configured to connect the main body frame 2 </ b> A and the projector 100 so that the attitude of the projector 100 can be adjusted. Specifically, the adjustment mechanism 3 adjusts the rotation direction (tilt adjustment) around an axis extending in the X direction (a third central axis 30Ax described later), and an axis extending in the Y direction (a second axis described later). Rotation direction adjustment (horizontal roll adjustment) around the center axis 20Ax) and rotation direction adjustment (horizontal rotation adjustment) around the axis extending in the Z direction (first center axis 10Ax described later) are possible It is configured.

[Configuration of adjustment mechanism]
Here, the adjustment mechanism 3 will be described in detail.
2A and 2B are perspective views showing the adjustment mechanism 3 and the adjustment mechanism support portion 25 in the main body frame 2A. FIG. 2A is a view seen from the front and FIG. 2B is a view seen from the rear. FIG. 3 is an exploded perspective view of the adjustment mechanism 3 and is a view seen obliquely from the front. FIG. 4 is an exploded perspective view of the adjustment mechanism 3 and is a view seen obliquely from the rear.

  As shown in FIGS. 2 to 4, the adjustment mechanism 3 includes a base portion 30, a first support portion 31, a second support portion 32, a third support portion 33, support shafts 34, 35, and 36 and an adjustment portion 4. .

  The base portion 30 is formed of sheet metal, and the left and right sides are fixed to the columnar portions 25R and 25L of the adjustment mechanism support portion 25 as shown in FIG. As shown in FIG. 3, the base portion 30 is formed with a round hole 301 centered on the first central axis 10 </ b> Ax extending in the vertical direction (vertical direction).

The first support portion 31 is made of sheet metal and is disposed below the base portion 30. As shown in FIG. 3, the first support portion 31 is bent downward from the right side of the upper surface portion 311 and the upper surface portion 311, a pair of side surface portions 312 bent downward from both front and rear sides of the upper surface portion 311, It has a mounting portion 313 extending to the right. The attachment portion 313 is provided with a protruding member 315.
The projecting member 315 is made of sheet metal, and has a member extending rightward from the mounting portion 313 and a member fixed to the distal end portion of this member and extending downward, and these members are Both sides perpendicular to the extending direction are bent to increase the strength.

A round hole 311h centering on the first central axis 10Ax is formed in the upper surface portion 311, and a round hole 312h centering on the second central axis 20Ax extending in the front-rear direction is formed in the pair of side surface portions 312. Has been.
A support shaft 34 is inserted into the round hole 301 of the base part 30 and the round hole 311h of the first support part 31, and the first support part 31 is rotatable to the base part 30 about the first central axis 10Ax. Supported.

The second support part 32 is formed of sheet metal and is disposed below the first support part 31. As shown in FIG. 3, the second support portion 32 is bent downward from the upper surface portion 321, the pair of side surface portions 322 bent upward from both the front and rear sides of the upper surface portion 321, and the left and right sides of the upper surface portion 321. A pair of side surface portions 323.
A projecting member 325 is provided on the upper surface portion 321.
The projecting member 325 is made of sheet metal, and has a member extending rightward from the upper surface portion 321 and a member fixed to the distal end portion of this member and extending downward, and these members are Both sides perpendicular to the extending direction are bent to increase the strength.

The pair of side surface portions 322 are separated so that the pair of side surface portions 312 of the first support portion 31 can be inserted. And a round hole 322h centering on the central axis coaxial with 2nd central axis 20Ax is formed in a pair of side part 322, and the 3rd central axis extended in a left-right direction in a pair of side part 323 A round hole 323h centering on 30Ax is formed. The third central axis 30Ax extends in a direction orthogonal to a vertical plane passing through the optical axis 110Ax of the projection lens 110.
The support shaft 35 is inserted into the round hole 312h of the first support portion 31 and the round hole 322h of the second support portion 32, and the second support portion 32 extends to the first support portion 31 with the second central axis 20Ax as the center. It is rotatably supported.

  The 3rd support part 33 is arrange | positioned under the 2nd support part 32, as shown in FIG. The third support portion 33 is configured by combining four tubular frames 33F, 33B, 33L, and 33R that extend along a straight line having a rectangular cross section. Specifically, in the third support portion 33, the frames 33F, 33B, 33L, and 33R are arranged on the front, rear, left, and right sides so that the opening 33A is provided at the center, and are assembled by screws, welding, or the like. The cross-sectional shapes of the frames 33F, 33B, 33L, and 33R are not limited to a rectangle, and may be a circle.

The frames 33F, 33B, 33L, and 33R are sized so that the lower portion of the second support portion 32 is disposed in the opening 33A, so that the left and right sides of the frames 33F and 33B protrude from the frames 33R and 33L. Are combined.
As shown in FIG. 1, the third support portion 33 holds the projector 100 by fixing the tip portions of the frames 33 </ b> F and 33 </ b> B protruding from the frames 33 </ b> R and 33 </ b> B to a pair of handles 121 of the projector 100.

  The frames 33R and 33L are formed with round holes centered on the central axis that is coaxial with the third central axis 30Ax. The round holes and the round holes 323h of the second support portion 32 are supported by the round holes 323h. The shaft 36 (see FIG. 4) is inserted, and the third support portion 33 is supported so as to be rotatable with respect to the second support portion 32 around the third central shaft 30Ax.

Next, the adjustment unit 4 will be described.
The adjustment unit 4 has a function of individually rotating the first support unit 31, the second support unit 32, and the third support unit 33.
FIG. 5 is a plan view of the projector support device 1 in the horizontal orientation and the projector 100 supported by the projector support device 1. Specifically, FIG. 5A is a diagram of the projector 100 viewed from above, FIG. 5B is a diagram of the projector 100 viewed from the front, and FIG. 5C is a diagram of the projector 100 viewed from the right. . FIG. 5 is a diagram in which the protection unit 21 of the projector support device 1 is omitted.

When the projector 100 is supported by the projector support device 1, the optical axis 110Ax of the projection lens 110 and the second central axis 20Ax are substantially parallel.
Here, as shown in FIG. 5A, the state of the adjustment mechanism 3 in which the second central axis 20 </ b> Ax is substantially perpendicular to the columnar part 25 </ b> B of the adjustment mechanism support part 25 as viewed from above is a first reference state. As shown in FIG. 5B, the state of the adjustment mechanism 3 in which the third central axis 30Ax is substantially parallel to the columnar portion 25F when viewed from the front is defined as a second reference state. Then, as shown in FIG. 5C, the state of the adjustment mechanism 3 in which the frame 33 </ b> R of the third support portion 33 is substantially parallel to the columnar portion 25 </ b> R when viewed from the right side is defined as a third reference state.

When the adjusting unit 4 individually rotates the first support unit 31, the second support unit 32, and the third support unit 33, the projector 100 tilts in each direction with respect to the above three reference states. Is adjusted.
As shown in FIG. 5A, when viewed from above, the first central axis 10Ax is positioned at the approximate center of the four columnar portions 25F, 25B, 25R, and 25L, and the second central axis 20Ax is the columnar portion 25R. And the columnar part 25L. The third central axis 30Ax is located closer to the columnar part 25F between the columnar part 25F and the columnar part 25B when viewed from above.

  In addition, as shown in FIG. 5A, the projector 100 has the center of gravity G located on the right side of the second central axis 20Ax and behind the third central axis 30Ax as viewed from above. That is, the first central axis 10 </ b> Ax, the second central axis 20 </ b> Ax, and the third central axis 30 </ b> Ax are provided at positions shifted from the center of gravity G of the projector 100.

2 and 3, the adjustment unit 4 includes a first adjustment unit 41, a second adjustment unit 42, and a third adjustment unit 43.
As shown in FIG. 3, the first adjustment unit 41 includes a first extension part 411 and a first operation part 5, and the first support part 31 is centered on the first central axis 10 </ b> Ax with respect to the base part 30. Rotate.
The first extension part 411 is fixed to the attachment part 313 of the first support part 31 and extends in a first direction intersecting the first central axis 10Ax, specifically, in the rear (−Y direction). The first extending portion 411 is made of sheet metal, and both sides orthogonal to the first direction are bent to increase the strength.

FIG. 6 is a cross-sectional view showing a part of the first operation unit 5 in the first reference state.
As shown in FIGS. 3 and 6, the first operation unit 5 includes a first guide unit 53, a first guide shaft 51, a shaft support unit 52 that supports the first guide shaft 51, a pair of dial units 8A and 8B, And a pair of movable members 9A and 9B.

The first guide portion 53 is made of sheet metal and is attached to the tip of the first extension portion 411, and a track-shaped insertion hole 53h in which the horizontal direction is larger than the vertical direction is formed.
The shaft support portion 52 is formed of a sheet metal and is bent, and is attached to the lower side of the columnar portion 25B in the vicinity of the columnar portion 25R as shown in FIG.
The first guide shaft 51 has a thread groove, one end side is fixed to the shaft support portion 52, that is, the adjustment mechanism support portion 25, and the other end side is inserted into the insertion hole 53 h of the first guide portion 53, and the first center It arrange | positions so that it may extend in the direction which cross | intersects axis | shaft 10Ax, specifically, the front-back direction.

The pair of dial portions 8A and 8B are formed with screw grooves that are screwed into the screw grooves of the first guide shaft 51. As shown in FIG. 6, the first guide portions are interposed via the pair of movable members 9A and 9B. It is comprised so that 53 may be clamped. That is, the movable member 9A is disposed between the dial portion 8A and the first guide portion 53, and the movable member 9B is disposed between the dial portion 8B and the first guide portion 53.
The dial portions 8A and 8B have convex spherical surface portions 8As and 8Bs that form part of spherical surfaces on the sides facing each other.

  The movable members 9A and 9B are formed with a hole through which the first guide shaft 51 is inserted in the center, the first guide portion 53 side is formed flat, and the dial portions 8A and 8B side are the spherical portions 8As of the dial portions 8A and 8B. , 8Bs, and concave engaging portions 9As, 9Bs that are slidably engaged with each other.

  In the first reference state, as shown in FIG. 6, the first guide shaft 51 is inserted substantially at the center of the insertion hole 53 h so as to be substantially perpendicular to the first guide portion 53, and the movable members 9 </ b> A and 9 </ b> B are It arrange | positions so that it may face through the 1st guide part 53. FIG. Dial portions 8A and 8B are arranged to face each other through movable members 9A and 9B and first guide portion 53.

  As will be described in detail later, when the dial portions 8A and 8B of the first operation portion 5 are rotated, the state where the first guide portion 53 is sandwiched between the pair of movable members 9A and 9B is released. . Then, the first guide portion 53 can be moved, that is, the first extension portion 411 can be pushed out or pulled in, and the first support portion 31 connected to the first extension portion 411 has the first central axis 10Ax. When the part away from the center is pushed out or pulled in, it rotates about the first central axis 10Ax.

As shown in FIG. 3, the second adjustment unit 42 includes a second extension portion 421 and a second operation unit 6, and is a second support portion with respect to the first support portion 31 around the second central axis 20 </ b> Ax. 32 is rotated.
The second extension part 421 is attached to the upper surface part 321 of the second support part 32 and is provided below the protruding member 315. The second extending portion 421 is made of sheet metal, and extends in the direction along the first central axis 10Ax and the second direction intersecting the first direction, specifically, the right side (+ X direction); The member is fixed to the tip of the member and has a member extending downward, and these members are bent at both sides orthogonal to the extending direction to increase the strength.

  As shown in FIG. 1, the second operation unit 6 is provided on the side opposite to the side where the second leg portion 23 is disposed. As shown in FIG. 3, the second operation unit 6 includes a second guide unit 63, a second guide shaft 62, a shaft support unit 61 (see FIG. 4) that supports the second guide shaft 62, and the first operation unit 5. Similarly, a pair of dial portions 8A and 8B and a pair of movable members 9A and 9B (not shown) are provided.

  As shown in FIG. 3, the second guide portion 63 is made of sheet metal and is attached to the tip of the second extending portion 421, that is, the tip of a member extending downward in the second extending portion 421, and the left and right direction is A track-shaped insertion hole 63h that is larger than the front-rear direction is formed.

As shown in FIG. 4, the shaft support portion 61 is attached to a member extending downward in the protruding member 315.
The second guide shaft 62 has a thread groove, and one end side is fixed to the first support portion 31 via the shaft support portion 61, that is, the shaft support portion 61 and the protruding member 315, and the other end side is the second guide portion 63. The insertion hole 63h is inserted. The second guide shaft 62 is disposed so as to extend in a direction (vertical direction) intersecting the second central axis 20Ax.

  Similarly to the dial portions 8A and 8B of the first operation portion 5, the dial portions 8A and 8B of the second operation portion 6 are configured to sandwich the second guide portion 63 via the movable members 9A and 9B. . Further, the dial portions 8A and 8B and the second guide portion 63 of the second operation portion 6 are provided at positions separated from the main body frame 2A as shown in FIG.

  As will be described in detail later, when the dial portions 8A and 8B of the second operation portion 6 are rotated, the state in which the second guide portion 63 is sandwiched between the pair of movable members 9A and 9B is released. . Then, the second guide portion 63 can be moved, that is, the second extension portion 421 can be pushed out or pulled in, and the second support portion 32 connected to the second extension portion 421 is connected to the second central axis 20Ax. When the part away from the center is pushed out or pulled in, it rotates about the second central axis 20Ax.

As shown in FIG. 3, the third adjusting unit 43 includes a third extending portion 431 and a third operating unit 7, and the third supporting portion is centered on the third central axis 30 </ b> Ax with respect to the second supporting portion 32. 33 is rotated.
The third extending portion 431 is attached to the frame 33 </ b> R of the third support portion 33 and is provided so as to be positioned below the protruding member 325. The third extending portion 431 is made of sheet metal, and is fixed to the member extending in the second direction intersecting the first central axis 10Ax and the distal end portion of this member, like the second extending portion 421. The members extend downward, and these members are bent at both sides orthogonal to the extending direction to increase the strength.

  As shown in FIG. 1, the third operation unit 7 is provided on the side opposite to the side on which the second leg portion 23 is disposed, similarly to the second operation unit 6. As shown in FIG. 3, the third operation unit 7 includes a third guide unit 72, a third guide shaft 73, a shaft support unit 71 (see FIG. 4) that supports the third guide shaft 73, and the first operation unit 5. Similarly, a pair of dial portions 8A and 8B and a pair of movable members 9A and 9B (not shown) are provided.

  As shown in FIG. 3, the third guide portion 72 is attached to the tip end of the third extension portion 431, that is, the tip end of a member extending downward in the third extension portion 431, as shown in FIG. A track-shaped insertion hole 72h is formed which is larger than the horizontal direction.

As shown in FIG. 4, the shaft support portion 71 is attached to a member that extends downward in the protruding member 325.
The third guide shaft 73 has a thread groove, and one end side is fixed to the second support portion 32 via the shaft support portion 71, that is, the shaft support portion 71 and the protruding member 325, and the other end side is the third guide portion 72. It is inserted through the insertion hole 72h. The third guide shaft 73 is disposed so as to extend in a direction (vertical direction) intersecting the third central axis 30Ax.

  Similar to the dial portions 8A and 8B of the first operation portion 5, the dial portions 8A and 8B of the third operation portion 7 are configured to sandwich the third guide portion 72 via the movable members 9A and 9B. . Further, the dial portions 8A and 8B and the third guide portion 72 of the third operation portion 7 are provided at positions separated from the main body frame 2A as shown in FIG.

  As will be described in detail later, when the dial portions 8A and 8B of the third operation portion 7 are rotated, the state where the third guide portion 72 is sandwiched between the pair of movable members 9A and 9B is released. . And the movement of the 3rd guide part 72, ie, the extrusion and drawing in of the 3rd extension part 431 is attained, and the 3rd support part 33 connected to the 3rd extension part 431 is the 3rd center axis 30Ax. When the part away from the center is pushed out or pulled in, it rotates about the third central axis 30Ax.

  Further, as described above, the first central axis 10 </ b> Ax, the second central axis 20 </ b> Ax, and the third central axis 30 </ b> Ax are provided at positions shifted from the center of gravity G of the projector 100. As shown in FIG. 5A, the first operation unit 5 is provided on the center of gravity G side with respect to the first center axis 10Ax, and the second operation unit 6 is provided on the center of gravity G side with respect to the second center axis 20Ax. It has been. And the 3rd operation part 7 is provided in the gravity center G side with respect to 3rd center axis | shaft 30Ax.

  Thus, the adjustment mechanism 3 connects the main body frame 2A and the projector 100, and the first support unit 31, the second operation unit 6, and the third operation unit 7 are operated to operate the first support unit 31, The second support part 32 and the third support part 33 are individually rotated. Then, the projector 100 held by the third support portion 33 is adjusted in posture in three directions (horizontal rotation adjustment, horizontal roll adjustment, and tilt adjustment) in accordance with the operation of the adjustment mechanism 3.

[How to adjust the attitude of the projector]
Here, a method for adjusting the attitude of the projector 100 will be specifically described.
First, a method when the projector 100 is rotated about the first central axis 10Ax and horizontal rotation adjustment is performed will be described.

Returning to FIG. 5A, as described above, in the adjustment mechanism 3, the second central axis 20 </ b> Ax is substantially perpendicular to the columnar portion 25 </ b> B of the adjustment mechanism support portion 25 in the first reference state. In the first reference state, the third support portion 33 that holds the projector 100 has the frame 33 </ b> B substantially parallel to the columnar portion 25 </ b> B in the projector support device 1.
Then, the projector 100 rotates about the first central axis 10 </ b> Ax when the first operation unit 5 is operated.

  FIG. 7 is a plan view of the projector support device 1 in the horizontal orientation and the projector 100 supported by the projector support device 1 as viewed from above. Specifically, FIG. 7A is a diagram in the case of being rotated in one direction from the first reference state, and FIG. 7B is a diagram in a case of being rotated in the other direction. FIG. 7 is a diagram in which the protection unit 21 of the projector support device 1 is omitted.

When the dial portion 8B of the first operation unit 5 is loosened from the first reference state, as shown in FIG. 7A, the CW direction can be rotated, and the first operation unit 5 from the first reference state. When the dial portion 8A is loosened, as shown in FIG. 7B, rotation in the CCW direction becomes possible.
Specifically, when the dial portion 8B of the first operating portion 5 is loosened from the first reference state, the dial portion 8B is separated from the first guide portion 53, so that the user can use the first guide portion 53 (first It becomes possible to push forward the distal end side of the extending portion 411.

  And when the 1st guide part 53 (the front end side of the 1st extension part 411) is extruded ahead, the 1st support part 31 connected to the 1st extension part 411 will be shown to Fig.7 (a). Thus, it rotates clockwise (CW direction) around the first central axis 10Ax with respect to the base portion 30. Since the projector 100 is connected to the first support portion 31 via the third support portion 33 and the second support portion 32, the projector 100 rotates together with the first support portion 31.

  Then, the user adjusts the amount of rotation while observing the projected image, and holds the first guide portion 53 with the dial portions 8A and 8B via the movable members 9A and 9B at the adjusted position. . As a result, as shown in FIG. 7A, the projector 100 is tilted in the −X direction according to the amount rotated with respect to the first reference state, and the adjusted state is maintained. In the first guide shaft 51, the protruding amount L from the dial portion 8A is larger than that in the first reference state.

FIG. 8 is an enlarged cross-sectional view of the vicinity of the dial portions 8A and 8B in the first operation portion 5 of FIG.
Since the first guide shaft 51 is fixed to the adjustment mechanism support portion 25 via the shaft support portion 52 (see FIG. 3), when the first guide portion 53 is moved, the first guide shaft 51 relatively moves in the insertion hole 53h. Will move. Further, when the first support portion 31 is rotated from the first reference state, the first guide portion 53 is inclined from a state (see FIG. 6) that is substantially perpendicular to the first guide shaft 51. Become.

  In the process in which the first support portion 31 is rotated from the first reference state, the movable members 9A and 9B are on the surface of the first guide portion 53 and the surfaces of the spherical portions 8As and 8Bs of the dial portions 8A and 8B. As shown in FIG. 8, it slides on and moves in different directions. Thus, the 1st support part 31 rotates smoothly by the structure provided with movable member 9A, 9B.

On the other hand, when the dial portion 8A is loosened from the first reference state, the dial portion 8A is separated from the first guide portion 53, so that the user can use the first guide portion 53 (the front end side of the first extension portion 411). Can be pulled backward.
And when the 1st guide part 53 (the front end side of the 1st extension part 411) is drawn back, the 1st support part 31 connected to the 1st extension part 411 will be shown in FIG.7 (b). Thus, it rotates counterclockwise (CCW direction) about the first central axis 10Ax with respect to the base portion 30. The projector 100 rotates together with the first support portion 31.

  Then, similarly to the case where the first support portion 31 is rotated clockwise, the user adjusts the amount of rotation while observing the projected image, and at the adjusted position, the movable member 9A, The first guide portion 53 is held between the dial portions 8A and 8B via 9B. As a result, as shown in FIG. 7B, the projector 100 is tilted in the + X direction according to the amount rotated with respect to the first reference state, and the adjusted state is maintained. In the first guide shaft 51, the protruding amount L from the dial portion 8A is smaller than that in the first reference state. The movable members 9A and 9B function in the same manner as when the first support portion 31 is rotated clockwise.

  As described above, the projector 100 supported by the projector support device 1 can be pushed and pulled in on the distal end side of the first extension portion 411 in the direction intersecting the first central axis 10Ax by the operation of the first operation portion 5. The horizontal rotation adjustment is performed.

Next, a method when the projector 100 is rotated around the second central axis 20Ax and horizontal roll adjustment is performed will be described.
Returning to FIG. 5B, as described above, in the adjustment mechanism 3, in the second reference state, the third central axis 30Ax is substantially parallel to the columnar portion 25F. In the third support portion 33 that holds the projector 100, the frame 33F is substantially parallel to the columnar portion 25F.
Then, the projector 100 rotates around the second central axis 20Ax when the second operation unit 6 is operated.

  FIG. 9 is a plan view of the projector support device 1 in the horizontal orientation and the projector 100 supported by the projector support device 1 as viewed from the front. Specifically, FIG. 9A is a diagram in the case of being rotated in one direction from the second reference state, and FIG. 9B is a diagram in a case of being rotated in the other direction. FIG. 9 is a diagram in which the protection unit 21 of the projector support device 1 is omitted.

When the dial portion 8B of the second operation unit 6 is loosened from the second reference state, as shown in FIG. 9A, the CCW direction can be rotated, and the second operation unit 6 can be moved from the second reference state. When the dial portion 8A is loosened, as shown in FIG. 9B, rotation in the CW direction becomes possible.
Specifically, when the dial portion 8B of the second operation unit 6 is loosened from the second reference state, the center of gravity G of the projector 100 is located on the second operation unit 6 side with respect to the second central axis 20Ax. The position of the second guide part 63 relative to the dial part 8A is maintained, and the dial part 8B is separated from the second guide part 63. That is, the second guide part 63 moves following the rotation of the dial part 8A. When the dial portion 8A is rotated and the second guide portion 63 (the tip end side of the second extension portion 421) is pushed upward, the second support portion 32 connected to the second extension portion 421 is As shown in FIG. 9A, the first support portion 31 rotates counterclockwise (CCW direction) about the second central axis 20Ax. Since the projector 100 is connected to the second support portion 32 via the third support portion 33, the projector 100 rotates together with the second support portion 32.

  Then, the user adjusts the amount of rotation while observing the projected image, and tightens the dial portion 8B, so that the second guide portion 63 is moved by the dial portions 8A and 8B via the movable members 9A and 9B. Hold it. As a result, as shown in FIG. 9A, the projector 100 is tilted so that the + X side is positioned above the −X side according to the amount of rotation, and the adjusted state is maintained.

  On the other hand, when the dial portion 8A is loosened from the second reference state, the second guide portion 63 (second extending portion 421) moves following the dial portion 8A, that is, pulled downward. When the second guide portion 63 (the front end side of the second extension portion 421) is pulled downward, the second support portion 32 connected to the second extension portion 421 is as shown in FIG. 9B. The first support portion 31 is rotated clockwise (CW direction) about the second central axis 20Ax.

Then, the user adjusts the amount of rotation while observing the projected image, and tightens the dial portion 8B, so that the second guide portion 63 is moved by the dial portions 8A and 8B via the movable members 9A and 9B. Hold it. As a result, as shown in FIG. 9B, the projector 100 is tilted so that the −X side is positioned above the + X side according to the amount of rotation, and the adjusted state is maintained.
The movable members 9A and 9B in the second operation unit 6 function in the same manner as the movable members 9A and 9B in the first operation unit 5.

  As described above, the projector 100 supported by the projector support device 1 can be pushed or pulled in on the distal end side of the second extending portion 421 in the direction intersecting the second central axis 20Ax by the operation of the second operation portion 6. The horizontal roll adjustment is performed.

Next, a method when the projector 100 is rotated around the third central axis 30Ax and tilt adjustment is performed will be described.
Returning to FIG. 5C, as described above, in the adjustment mechanism 3, in the third reference state, the frame 33R of the third support portion 33 is substantially parallel to the columnar portion 25R.
Then, the projector 100 rotates around the third central axis 30Ax when the third operation unit 7 is operated.

  FIG. 10 is a plan view of the projector support device 1 in the horizontal orientation and the projector 100 supported by the projector support device 1 as viewed from the right. Specifically, FIG. 10 (a) is a diagram in the case of being rotated in one direction from the third reference state, and (b) is a diagram in the case of being rotated in the other direction. FIG. 10 is a diagram in which the protection unit 21 of the projector support device 1 is omitted.

  When the dial portion 8A of the third operation unit 7 is loosened from the third reference state, as shown in FIG. 10A, the CW direction can be rotated, and the third operation unit 7 can be moved from the third reference state. When the dial portion 8B is loosened, as shown in FIG. 10 (b), the CCW direction can be turned.

  Specifically, when the dial portion 8A is loosened from the third reference state, the center of gravity G of the projector 100 is located on the third operation portion 7 side with respect to the third central axis 30Ax. The tip end side of the third extending portion 431 moves following the dial portion 8A, that is, is drawn downward. Then, as shown in FIG. 10A, the third support part 33 connected to the third extension part 431 rotates clockwise (CW) around the third central axis 30Ax with respect to the second support part 32. Direction).

  Then, the user adjusts the amount of rotation while observing the projected image, and tightens the dial portion 8B, thereby moving the third guide portion 72 with the dial portions 8A and 8B via the movable members 9A and 9B. Hold it. As a result, as shown in FIG. 10A, the projector 100 is tilted so that the + Y side is positioned above the −Y side according to the amount of rotation, and the adjusted state is maintained.

  On the other hand, when the dial portion 8B is loosened from the third reference state, the dial portion 8B is separated from the third guide portion 72, so that the user can use the third guide portion 72 (the tip side of the third extending portion 431). Can be pushed upward.

  When the third guide portion 72 (the tip end side of the third extension portion 431) is pushed upward, the third support portion 33 connected to the third extension portion 431 is shown in FIG. Thus, it rotates counterclockwise (CCW direction) around the third central axis 30Ax with respect to the second support portion 32. The projector 100 rotates together with the third support portion 33.

Then, the user adjusts the amount of rotation while observing the projected image, and clamps the third guide portion 72 with the dial portions 8A and 8B via the movable members 9A and 9B at the adjusted position. . As a result, as shown in FIG. 10B, the projector 100 is tilted so that the −Y side is positioned above the + Y side according to the amount of rotation, and the adjusted state is maintained.
The movable members 9A and 9B in the third operation unit 7 function in the same manner as the movable members 9A and 9B in the first operation unit 5.

  As described above, the projector 100 supported by the projector support device 1 can be pushed or pulled in on the distal end side of the third extending portion 431 in the direction intersecting the third central axis 30Ax by the operation of the third operating portion 7. Tilt adjustment is performed.

  The adjustment mechanism 3 is configured such that the rotation range of the second support portion 32 is smaller than the rotation range of the first support portion 31 and the third support portion 33. That is, the adjustment mechanism 3 is configured such that the horizontal roll adjustment range of the projector 100 is smaller than the horizontal rotation adjustment and tilt adjustment ranges.

As described above, according to the projector support device 1 of the present embodiment, the following effects can be obtained.
(1) The posture of the projector 100 that is inclined according to the direction in which each support portion (the first support portion 31, the second support portion 32, and the third support portion 33) is rotated is changed. Thereby, since the inclination of the three directions of the projector 100 can be adjusted independently, the projector support apparatus 1 which can adjust easily distortion of the image projected on a projection surface can be provided.
The adjustment mechanism 3 includes a first extension part 411, a second extension part 421, and a third extension part 431. The first operation part 5, the second operation part 6, and the third operation part 7 are Since the projectors 100 are provided at the respective leading ends, it is possible to easily adjust the attitude of the projector 100 from the vicinity of the outer periphery of the projector 100 even if the projector 100 is a large size.
Further, the first operation unit 5, the second operation unit 6, and the third operation unit 7 can be operated even when the space between the upper protection unit 212 and the projector 100 is narrowed so that the user's hand does not enter. Therefore, it is possible to provide the projector support device 1 that can be stacked and restrained in the thickness direction (vertical direction).

(2) If the center of gravity of the projector 100 is located on the central axis on which the projector 100 rotates, the balance of the projector 100 becomes unstable like a seesaw when adjusting the posture, so that the posture adjustment operation becomes difficult. It is possible. In the configuration in which the central axis is along the horizontal plane, it becomes more unstable.
In the projector support device 1 of the present embodiment, the first central axis 10Ax, the second central axis 20Ax, and the third central axis 30Ax are provided at positions shifted from the center of gravity G of the projector 100, so that the projector 100 is in a stable state. It becomes possible to adjust the posture.

  (3) The adjustment mechanism 3 is arranged in the order of the first support portion 31, the second support portion 32, and the third support portion 33 from the adjustment mechanism support portion 25 side, and the rotation range of the second support portion 32 is the first. The rotation range of the support part 31 and the third support part 33 is configured to be smaller. As a result, the rotation range of the second support portion 32 located between the first support portion 31 and the third support portion 33 is reduced, and the adjustment mechanism can be downsized. Therefore, it is possible to provide a projector support device including an adjustment mechanism that can be downsized by configuring a rotation range of horizontal rotation adjustment and tilt adjustment that is considered to be frequently used to be larger than a rotation range of horizontal roll adjustment.

(4) The first operation unit 5 is arranged in a first direction (−Y direction) orthogonal to the first central axis 10Ax, and the second operation unit 6 and the third operation unit 7 are orthogonal to the first central axis 10Ax. Is arranged in the second direction (+ X direction). Thus, the user can adjust the orientation of the projector 100 in three directions by operating the projector support device 1 from two directions. Therefore, it is possible to simplify the attitude adjustment work of the projector 100 in the three directions.
In addition, the first operation unit 5 is disposed on the rear side of the projector support device 1, and the second operation unit 6 and the third operation unit 7 are disposed on the opposite side of the second leg portion 23. Even when installed in a vertical posture, the first operation unit 5, the second operation unit 6, and the third operation unit 7 can be easily operated.

(5) Since the second support portion 32 is at least partially disposed in the opening 33A of the third support portion 33, the adjustment mechanism 3 can be thinned.
Moreover, since the 3rd support part 33 is comprised by the tubular frame with a rectangular cross section, even if it provides an opening part, it can be set as the member which raised the intensity | strength. Therefore, the adjustment mechanism 3 that suppresses an increase in thickness and can reliably hold the heavy projector 100 is possible.

(6) The dial parts 8A and 8B provided in the first operation part 5, the second operation part 6 and the third operation part 7 are rotated, and the first guide part 53, the second guide part 63 and the third guide part 72 are rotated. It is possible to easily adjust the inclination of the projector 100 in three directions by a simple operation of pushing and pulling in the projector 100.
Further, the dial portions 8A and 8B in the first operation portion 5, the second operation portion 6 and the third operation portion 7, and the respective guide portions (the first guide portion 53, the second guide portion 63, the third guide portion 72). Is provided at a position apart from the main body frame 2A, so that the user can easily grasp these members and perform the adjustment work easily.

  (7) Each of the first operation unit 5, the second operation unit 6 and the third operation unit 7 includes movable members 9A and 9B, and the dial units 8A and 8B and the movable members 9A and 9B are slidable on a spherical surface. Since the first support portion 31, the second support portion 32, and the third support portion 33 are rotated, the dial portions 8A and 8B, the first guide portion 53, and the second guide portion are configured. 63, torsional stress applied to the third guide portion 72 can be suppressed. Accordingly, it is possible to suppress the deterioration of the adjustment mechanism 3 and to smoothly rotate the first support portion 31, the second support portion 32, and the third support portion 33.

(Modification)
In addition, you may change the said embodiment as follows.
Each operation unit (the first operation unit 5, the second operation unit 6, and the third operation unit 7) of the above embodiment has a central axis (first central axis 10Ax, second central axis 20Ax, and third central axis 30Ax). ), The first central axis 10Ax, the second central axis 20Ax, and the third central axis 30Ax are arranged at other positions as long as they are at positions shifted from the center of gravity G of the projector 100. May be.

  Each operation unit (the first operation unit 5, the second operation unit 6, and the third operation unit 7) of the above embodiment includes a first guide unit 53, a second guide unit 63, and a pair of dial units 8A and 8B. The third guide portion 72 is configured to be clamped, but may be configured to be clamped between a biasing portion such as a coil spring and a dial portion.

  The dial portions 8A and 8B and the movable members 9A and 9B according to the embodiment have the spherical portions 8As and 8Bs whose dial portions 8A and 8B are convex, and the engaging members 9As and 9Bs whose concave portions are movable members 9A and 9B. However, the dial portions 8A and 8B may be provided with concave spherical surface portions, and the movable members 9A and 9B may be provided with convex engagement portions.

  The movable members 9A and 9B may be formed of an elastic member.

  DESCRIPTION OF SYMBOLS 1 ... Projector support device, 2 ... Support main-body part, 2A ... Main body frame, 3 ... Adjustment mechanism, 4 ... Adjustment part, 5 ... 1st operation part, 6 ... 2nd operation part, 7 ... 3rd operation part, 8A, 8B ... Dial part, 8As, 8Bs ... Spherical surface part, 9A, 9B ... Movable member, 9As, 9Bs ... Engagement part, 10Ax ... First central axis, 20Ax ... Second central axis, 25 ... Adjustment mechanism support part, 30 ... Base part, 30Ax ... third central axis, 31 ... first support part, 32 ... second support part, 33 ... third support part, 33A ... opening part, 33B, 33F, 33L, 33R ... frame, 51 ... first Guide shaft 53 ... first guide portion 53h ... insertion hole 62 ... second guide shaft 63 ... second guide portion 63h ... insertion hole 72 ... third guide portion 72h ... insertion hole 73 ... third Guide shaft, 100 ... projector, 110 ... projection lens (projection optical system) 110ax ... optical axis, 411 ... first extending portion, 421 ... second extending portion, 431 ... third extending portion, G ... centroid.

Claims (8)

A projector support device for supporting a projector having a projection optical system,
A main body frame in which the projector can be disposed;
An adjustment mechanism for connecting the main body frame and the projector and adjusting the attitude of the projector;
With
The main body frame has an adjustment mechanism support portion that supports the adjustment mechanism,
The adjustment mechanism is
A base portion fixed to the adjustment mechanism support portion;
A first support portion rotatably supported on the base portion around a first central axis;
A second support portion rotatably supported by the first support portion around a second central axis extending in a direction orthogonal to the first central axis;
A third support unit that holds the projector and is rotatably supported by the second support unit about a third central axis that extends in a direction orthogonal to the first central axis and the second central axis When,
An adjustment unit for individually rotating the first support unit, the second support unit, and the third support unit;
With
The adjustment unit is
A first extension extending from the first support in a direction intersecting the first central axis;
A second extension portion extending from the second support portion in a direction intersecting the first central axis;
A third extension portion extending from the third support portion in a direction intersecting the first central axis;
A first operating portion capable of pushing out and pulling in a tip side of the first extending portion in a direction intersecting the first central axis;
A second operating portion capable of pushing and pulling in a distal end side of the second extending portion in a direction intersecting the second central axis;
A third operating part capable of pushing and pulling in a tip side of the third extending part in a direction intersecting the third central axis;
Equipped with a,
When viewed from a direction along the first central axis, the projector first central axis, said second central shaft and the third central axis, characterized that you have provided at a position shifted from the center of gravity of the projector Support device. The projector support device according to claim 1 ,
In the posture in which the projector support device is installed, the first central axis extends in a direction along the vertical direction, the second central axis extends in a direction along the optical axis of the projection optical system, The three central axes extend in a direction orthogonal to a vertical plane passing through the optical axis of the projection optical system.   The projector support device according to claim 2,
  The projector support apparatus, wherein the third central axis is provided at a position shifted from the second central axis toward the projection direction of the projection optical system. A projector support apparatus according to any one of claims 1 to 3,
The first extension portion extends in a first direction intersecting the first central axis,
The projector support device, wherein the second extension part and the third extension part extend in a second direction intersecting the first central axis and the first direction. The projector support device according to any one of claims 1 to 4,
The projector support device, wherein the third support part has an opening in which at least a part of the second support part is disposed. The projector support device according to claim 5,
The third support portion has a frame that forms the opening,
The frame is a tubular member having a rectangular cross section. A projector support device according to any one of claims 1 to 6,
The first operation unit includes:
A first guide shaft fixed to the adjustment mechanism support, extending in a direction intersecting the first central axis, and having a thread groove;
A first guide portion that is fixed to a distal end side of the first extension portion and has an insertion hole through which the first guide shaft is inserted;
A pair of dial parts screwed onto the first guide shaft and sandwiching the first guide part;
With
The second operation unit includes:
A second guide shaft fixed to the first support portion, extending in a direction intersecting the second central axis, and having a thread groove;
A second guide portion that is fixed to the distal end side of the second extension portion and has an insertion hole through which the second guide shaft is inserted;
A pair of dial parts screwed into the second guide shaft and sandwiching the second guide part;
With
The third operation unit includes
A third guide shaft fixed to the second support portion, extending in a direction intersecting the third central axis, and having a thread groove;
A third guide portion fixed to the distal end side of the third extension portion and having an insertion hole through which the third guide shaft is inserted;
A pair of dial parts screwed into the third guide shaft and sandwiching the third guide part;
A projector support device comprising: The projector support device according to claim 7,
Each of the pair of dial portions in the first operation portion, the second operation portion, and the third operation portion has a spherical portion that forms a part of a spherical surface on the side facing each other.
Each of the first operation unit, the second operation unit, and the third operation unit has a pair of movable members provided with engagement portions that slidably engage with the spherical surface portion,
Each of the pair of dial portions in the first operation portion, the second operation portion, and the third operation portion has the first guide portion, the second guide portion, and the third through the pair of movable members. A projector support device characterized by sandwiching a guide portion.

Images