JP2009058929A - Projector fixing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To appropriately select the screen position of a projector in a space structure where the projector is installed. <P>SOLUTION: The projector fixing device for adjusting the fixing state of the projector projecting a video image in the space structure for forming an arbitrary space by coupling one or a plurality of columnar bodies extending upward from the floor with one or a plurality of cross beam bodies extending in a horizontal direction to the floor or by coupling the cross beam bodies with each other. The projector fixing device comprises a fixing means for securing the projector to the cross beam bodies, and a rotary coupling means for coupling the fixing means and the projector such that the projector is rotatable in a horizontal plane parallel with the cross beam bodies. The projector can project the video image in at least two video projecting directions by the rotary coupling means. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an attachment device that can adjust the attachment state of a projector attached to a space structure for exhibiting information equipment, panels, and the like in an office or an exhibition hall.

  When building a shared space such as a conference space or exhibition space using information equipment in an office or exhibition hall, design the spatial structure based on the introduction of dimensions and weight of the information equipment used there. It is normal. For example, even when a display or projector as an information device is used, the size, weight, number of units to be used, and the like vary depending on the purpose of use of the space. Therefore, the spatial structure is designed to have a shape corresponding to each. However, because of recent rapid development of information devices, new information devices appear one after another, and new functions are added or downsized even with conventional information devices. Updated. As a result, in a spatial structure using these information devices, the spatial structure must be redesigned in accordance with changes in dimensions and shape due to the appearance of new information devices.

  Therefore, a technology has been developed that can flexibly respond to the emergence of new information devices and the update of information devices in a space structure that uses information devices, and that can easily design a new space structure. (See, for example, Patent Document 1).

Here, a projector is mentioned as an information apparatus used with the above spatial structures. This projector can provide information to many users by projecting an image on a screen or the like. In many cases, the projector is usually hung from a ceiling or the like so that the arrangement is not disturbed by the user while ensuring the distance to the screen. Then, when the projector is installed in a space structure, an attachment device has been developed that allows the attitude of the projector to be finely adjusted in order to improve the projection state of the projector (see, for example, Patent Documents 2 and 3). reference.).
JP 2007-132474 A JP-A-8-275093 Japanese Patent Laid-Open No. 10-3122

  Recently, projectors have been used more frequently in space structures used in offices and exhibition halls. This is because the projector is a very useful tool for giving presentations to a large audience. As a usage pattern that further enhances the convenience of the projector, multi-screen presentations have been widely performed. The multi-screen is a usage form that enables more efficient and effective presentation by providing a plurality of projection screens of the projector. However, in the conventional space structure, a projector mounting device corresponding to a multi-screen useful as a place for such a presentation has not been developed.

  Further, when the structure of the spatial structure is changed, the number of screens to be projected by the projector may be increased. In such a case, a projector mounting device that easily adjusts the mounting state of the projector has not been developed conventionally.

In the present invention, in view of the above-described problems, it is possible to appropriately select a screen position of a projector in a space structure configured using an information device, particularly in a space structure where a projector is installed. An object of the present invention is to provide an attachment device for the projector.

  In order to solve the above problems, in the present invention, when the projector is attached to the horizontal beam body, the projector and the horizontal beam body can be relatively rotated. Since the projector can rotate, the projector can project an image on a plurality of screens.

  Specifically, in the present invention, one or a plurality of columnar bodies extending upward from the floor and one or a plurality of horizontal beam bodies extending in the horizontal direction on the floor are connected to each other, or the horizontal beam bodies are connected to each other. Thus, in a spatial structure capable of forming an arbitrary space, a projector mounting device that adjusts the mounting state of a projector capable of projecting an image, the fixing means for fixing the projector to the horizontal beam body, A rotation connecting means for connecting the fixing means and the projector so that the projector can rotate in a horizontal plane parallel to the horizontal beam body, and the projector projects at least two images by the rotation connecting means. It is possible to project an image in the direction.

  In the projector mounting apparatus according to the present invention, the horizontal beam body and the projector are fixed by the fixing means, and the projector can be horizontally rotated in a state where the projector is fixed to the horizontal beam body by the rotation connecting means. Note that the horizontal rotation referred to here is not limited to a horizontal plane strictly parallel to the horizontal beam body, and may have a certain width, so long as it can be distinguished from rotation in the vertical plane. As a result, the projector has at least two video projection directions. This video projection direction is the direction in which the projector projects the video provided to the user, and is the direction that is clearly recognized as different video directions, and corresponds to the projection surface such as the screen provided individually. Direction. Accordingly, a slight shift in the projection direction caused by finely adjusting the attitude of the projector does not correspond to the “two video projection directions” referred to in the present invention.

  Since the projector mounted on the spatial structure by the projector mounting apparatus configured as described above has at least two image projection directions while being fixed to the horizontal beam body, it is possible to meet the demand for multi-screen. This contributes to providing a comfortable presentation space for the user. In particular, in the above-mentioned space structure, an arbitrary space can be formed by combining and connecting the horizontal beam body and the columnar body, so that it is easy to install a multi-screen. Therefore, in such a space structure, the projector mounting device according to the present invention is very useful.

  In order to solve the above-mentioned problem, the projector mounting device according to the present invention can be grasped from another aspect. Therefore, the projector can be rotated in the vertical plane when the projector is attached to the horizontal beam. This also makes it possible to adjust the projection location of the projector to the target location of the spatial structure, and thus the screen position of the projector can be appropriately selected according to the user's request and the like. Specifically, in the present invention, one or a plurality of columnar bodies extending upward from the floor and one or a plurality of horizontal beam bodies extending in the horizontal direction on the floor are connected to each other, or the horizontal beam bodies are connected to each other. Thus, in a spatial structure capable of forming an arbitrary space, a projector mounting device that adjusts the mounting state of a projector capable of projecting an image, the fixing means for fixing the projector to the horizontal beam body, And a rotation connecting means for connecting the fixing means and the projector so that the projector can rotate in a vertical plane, and the projector projects an image in at least two image projection directions by the rotation connecting means. It becomes possible to do.

  Further, in the above-described rotation connecting means for allowing the projector to rotate in a horizontal plane, the fixing means and the projector may be connected so as to be further rotatable in a vertical plane. As described above, the convenience of the user is further improved by enabling rotation on both the horizontal plane and the vertical plane.

  Here, in the projector mounting apparatus described above, the columnar body or the horizontal beam body is added to or removed from the spatial structure, or the position of the already connected columnar body or the horizontal beam body is changed. When the arbitrary space is formed, the rotation connecting unit may rotate the projector so as to correspond to a new video projection position of the projector after the arbitrary space is formed.

  That is, in the space structure, an arbitrary space can be formed as described above. As a result, it is desired to appropriately select the image projection plane of the projector in consideration of the image projection capability of the projector, the presentation environment for the user, and the like. Therefore, according to the projector mounting device of the present invention, the orientation of the projector in the horizontal plane can be easily changed, and thus it is possible to project an image toward a new image projection plane. When changing the orientation of the projector so as to correspond to a new image projection surface, the orientation may be changed while the projector is fixed to the cross beam by the fixing means, and in some cases, the orientation may be temporarily fixed by the fixing means. The orientation of the projector may be changed after canceling and changing the fixing position of the horizontal beam body and the projector.

  Furthermore, in the projector mounting apparatus, the fixing means is configured to allow the projector to slide along the horizontal beam body, and to fix the projector at an arbitrary position of the horizontal beam body. When the new arbitrary space is formed in the space structure, the fixing means slides the position of the projector so as to correspond to the new video projection position of the projector after the arbitrary space is formed, and the slide The projector after movement may be fixed to the horizontal beam body.

  That is, when a new arbitrary space is formed in the space structure as described above, the fixing by the fixing means is released, and the position of the projector with respect to the horizontal beam body is easily changed by sliding the projector. It becomes possible. As a result, the projector can be easily made to correspond to the new video projection surface.

  Here, the following configuration can be exemplified as one of the configurations enabling the projector to slide by the fixing means. That is, the transverse beam body has a transverse beam body groove portion which is a semi-closed space extending along the axial direction in a part or all of the axial direction and having an opening in a cross section of the transverse beam body, Therefore, it is useful that the fixing means is slidable in the cross beam groove and is connected to the rotation connecting means via the opening. With such a configuration, the state in which the fixing means can be freely slidably moved in the cross beam groove portion but can be connected to the rotation connecting means is maintained, and thus the projector can be applied to the new image projection surface described above. Is possible.

  Here, in the projector mounting apparatus described above, the fixing means may fix the projector to the horizontal beam body so that the projector is suspended vertically downward. An example of the attachment state of the projector by the projector attachment apparatus which concerns on this invention is shown.

In the projector mounting device described above, the projector mounting device further includes an operation unit that is connected to the projector and that controls an orientation of the projector via the rotation connection unit, and the operation unit includes the rotation connection unit and the rotation connection unit. The projector may be connected to the projector side at a predetermined distance from a connecting portion with the projector, and may extend downward from the connection point where the user is located. The operation unit is useful for adjusting the orientation of the projector. And since this operation part is separated from the connection part of a rotation connection part and a projector by predetermined distance, the torque for changing the direction of a projector is made to act on this rotation connection part efficiently with respect to a rotation connection part. Is possible. The predetermined distance may be set by appropriately judging the adjustment of the projector's effective orientation and the size of the projector mounting device.

  Further, instead of the operation unit, an operation unit may be provided that surrounds the projector and is connected to the projector side so as to be formed in an annular shape in a downward direction where the user is located. By forming the operation unit in a ring shape, the user can grasp a part of the ring operation unit and rotate the projector freely and easily in the horizontal direction or the vertical direction. As an example of the annular formation, there are an operation portion formed in a rectangular shape by a horizontal portion extending in the horizontal direction and a vertical portion extending in the vertical direction, and an operation portion formed in an elliptical shape.

  In a space structure in which a projector is installed and an arbitrary space can be formed, the screen position of the projector can be appropriately selected.

<Example 1>
Here, details of the space structure in which the projector mounting device according to the present invention is used will be described based on the drawings. FIG. 1 is a diagram showing an overview of the entire space structure 1. The spatial structure 1 mainly includes poles 2a to 2f and 2h to 2j (hereinafter collectively referred to as “pole 2”) that are a plurality of columnar bodies, and beams 3a to 3i that are a plurality of horizontal beams (hereinafter referred to as “poles 2”). , Collectively referred to as “beam 3”), and small beams 4b and 4c (hereinafter collectively referred to as “small beam 4”). The pole 2 extends vertically upward from the floor surface to support the space structure 1, and the beam 3 and the small beam 4 extend horizontally to the floor surface and connect the poles 2 or the beams 3 to each other.

  Specifically, the spatial structure 1 shown in FIG. 1 has a rectangular shape, and has six poles 2a to 2f in the vicinity of the middle of its four corners and long sides as a basic configuration. And the top part of these poles 2a-2f is connected by the seven beams 3a-3g. Further, a pole 2h is provided so as to face the pole 2f. This pole 2h is connected in the middle of the beam 3f. Two small beams 4b are connected to each other between the pole 2f and the pole 2h, and a shelf 6 is provided in a space surrounded by the small beams 4b and the poles 2f and 2h.

  Two poles 2i and 2j connected in the middle of the beam 3d are provided between the poles 2c and 2d. And the lower part of pole 2c, 2i, 2j, and 2d is connected by the small beam 4c between each, and the intensity | strength improvement of a spatial structure is aimed at. Furthermore, screens 7a, 7b, and 7c are provided between the poles 2c and 2i, between the poles 2i and 2j, and between the poles 2j and 2d, respectively. The screens 7a to 7c are projection surfaces of the projector 8 that is installed suspended from the beam 3g. Note that the mounting device according to the present invention is used for mounting the projector 8, and details thereof will be described later (see FIG. 28 and the like). In consideration of the load on the beam 3g due to the weight of the projector 8, the beams 3h and 3i are provided in parallel with the beams 3c and 3e between the beam 3g and the beam 3d for reinforcement. A video signal projected on each screen by the projector 8 is given to the projector 8 from a computer stored in the shelf 6.

As described above, the spatial structure 1 shown in FIG. 1 is a structure configured by combining information devices such as a computer and a projector 8 and appropriately combining poles, beams, and small beams according to the purpose of use. Yes, it provides a space where the user can make a presentation or the like using the projection video from the projector 8. The spatial structure 1 is not limited to that shown in FIG. 1, and a plurality of poles 2, beams 3, and small beams 4 can be combined to form an arbitrary space according to the purpose of use. Below, the detailed structure of the pole 2, the beam 3, and the small beam 4, and these connection methods are demonstrated.

  First, the pole 2 will be described with reference to FIGS. FIG. 2 is an external view of the pole 2, and FIG. 3 is a cross-sectional view of the pole 2. The pole 2 has a shape equally divided into four in its cross section. A partition wall 21 extends radially from the central portion 20 to form a square apex P in the cross section of the pole 2. The wall surface 22 extends from one vertex P toward the adjacent vertex P. The wall surface 22 extending from one vertex P and the wall surface 22 extending from the other vertex P adjacent thereto extend to an intermediate position between both vertices P, and they do not contact each other. Accordingly, an opening 23 is formed between the opposing wall surfaces 22 and 22 (hereinafter referred to as “a pair of wall surfaces 22”). Further, a groove portion 24 is formed by the pair of wall surfaces 22, the partition wall 21, and the central portion 20. These openings 23 and grooves 24 extend over the entire length in the axial direction of the pole 2 as shown in FIG.

  Furthermore, at each vertex P of the cross section of the pole 2, two outer wall surfaces 25 extending from each vertex P toward the outside of the pole 2 and orthogonal to the two wall surfaces 22 connected to the vertex P are provided. As a result, the outer wall surface 25 extending from one vertex P and the outer wall surface 25 extending from the other vertex P adjacent thereto are opposed to each other. Then, the facing outer wall surface 25 and the pair of wall surfaces 22 connected thereto form a wiring groove 26 which is a semi-closed space on the surface of the pole 2. In the wiring groove 26, it is possible to store a power cable and a signal cable of information equipment used in the spatial structure 1. Further, when the cable is housed in the wiring groove 26, the design of the appearance is deteriorated. Therefore, the wiring cover shown in FIG. 3 may be provided so as to cover the wiring groove 26.

  Next, the beam 3 will be described with reference to FIGS. FIG. 4 is an external view of the beam 3, and FIG. 5 is a cross-sectional view of the beam 3. The cross-sectional shape of the beam 3 is almost the same as the cross-sectional shape of the pole 2. The central portion 30, the partition wall 31, the wall surface 32 (a pair of wall surfaces 32), the opening portion 33, the groove portion 34, and the vertex Q of the beam 3 are the center portion 20, the partition wall 21, the wall surface 22 (a pair of wall surfaces 22), and the opening. Since they correspond to the portion 23, the groove portion 24, and the apex P, detailed description thereof will be omitted.

  In the beam 3, the configuration of the wiring groove for storing the power cable and the signal cable of the information equipment used in the spatial structure 1 is different from that of the pole 2. In the beam 3, as shown in FIG. 5, wiring grooves 36 and 38 are formed only in two directions, ie, vertically upward and vertically downward. Here, the height of the outer wall surface 35 constituting the wiring groove portion 36 in the vertically upward direction (the height of the outer wall surface 35 from the apex Q) is the height of the outer wall surface 37 constituting the wiring groove portion 38 in the vertically downward direction. It is designed to be higher than the height (the height of the outer wall surface 37 from the apex Q). This is because when the beam 3 is incorporated into the spatial structure 1, the wiring groove 36 opens in the vertical upward direction, so that it is preferable that more cables can be accommodated. Of course, it is possible to store the cable in the wiring groove 38 in the vertically downward direction, but since the design of the appearance is deteriorated, the wiring cover shown in FIG. 5 is provided so as to cover the wiring groove 38 in that case. May be. In addition, the wall surface corresponding to the outer wall surfaces 35 and 37 is not provided on the surface of the beam 3 in the horizontal direction, and there is no wiring groove.

Next, the small beam 4 will be described with reference to FIGS. 6 and 7. FIG. 6 is an external view of the small beam 4, and FIG. 7 is a cross-sectional view of the small beam 4. The cross-sectional shape of the small beam 4 is the same as the horizontal direction of the beam 3 and is compressed in the vertical direction. That is, the beam is thinner than the beam 3. The central portion 40 of the small beam 4, the partition wall 41, the wall surface 42 (a pair of wall surfaces 42), the opening 43, the groove portion 44, and the vertex R are the center portion 30 of the beam 3, the partition wall 31, the wall surface 32 (a pair of wall surfaces 32), It corresponds to the opening 33, the groove 34, and the apex Q, respectively. Further, the small beam 4 is not provided with a space corresponding to the wiring grooves 26, 36, and 38.

  Here, the connection of the pole 2, the beam 3, and the small beam 4 constituting the spatial structure 1 will be described. First, the connection of each element in each corner portion of the space structure 1 will be described with reference to FIGS. FIG. 8 is a diagram showing a state of connection between two beams 3 and one pole 2 at the corner (for example, connection between the pole 2a and the beams 3a and 3b in the space structure 1). 9 and 10 are diagrams showing details of the connection between the pole 2 and the beam 3.

  The connection between the pole 2 and the beam 3 at the corner portion is performed through a joint 10. The joint 10 has an installation surface 10a that comes into contact with the upper end surface of the joint 2 when installed on the pole 2, and a through hole 10d is provided at the center of the installation surface 10a. When the installation surface 10 a is installed on the upper end surface of the pole 2, the through hole 10 d takes a position corresponding to the screw hole provided in the central portion 20 of the pole 2. And as shown in FIG. 10, the joint 10 is connected with the pole 2 with a screw | thread.

  Further, the joint 10 has an installation surface 10b that comes into contact with an end surface of the joint 3 when installed on the beam 3, and a through hole 10e is provided at the center of the installation surface 10b. When the installation surface 10 b comes into contact with the end surface of the beam 3, the through hole 10 e takes a position corresponding to the screw hole provided in the central portion 30 of the beam 3. And as shown in FIG. 10, the joint 10 is connected with the beam 3 with a screw | thread. Further, the joint 10 is provided with a beam guide portion 10 c that fits into an end portion of the wiring groove portion 38 of the beam 3 when the installation surface 10 b comes into contact with the end surface of the beam 3. As shown in FIG. 10, the beam guide portion 10 c is fitted into the wiring groove portion 38, thereby facilitating work when the beam 3 is connected to the joint 10. The installation surface 10 b, the beam guide portion 10 c, and the through hole 10 e are provided at four locations in the joint 10 according to the shape of the pole 2.

  In addition, when connecting the joint 10 to the pole 2 with a screw, as shown in FIG. 9, a screw is inserted from the opening part of the upper part of the joint 10, and a connection operation | work is performed. In addition, when the joint 10 is connected to the beam 3 with a screw, a screw is inserted from the opening at the top of the joint 10 to perform the connecting operation, or the through hole 10e located at a position facing the through hole 10e used for the connection. May be used.

  After connecting the pole 2 and the beam 3 through the joint 10 as described above, the opening at the top of the joint 10 is covered with an adjuster support 12 as shown in FIG. The adjuster support 12 is provided with a cylindrical portion with an inner screw cut, and an adjuster cover 13 that covers the cylindrical portion and an adjuster 14 that has a screw portion that is screwed into the cylindrical portion. This adjuster 14 is for adjusting the distance from the ceiling of an office or the like where the space structure 1 is placed.

  Next, the connection of the small beams 4 that connect the lower portions of the poles 2 will be described with reference to FIGS. FIG. 11 is a diagram showing a state of connection between the pole 2 and the small beam 4 in the lower part of the pole 2 (for example, connection between the pole 2c and the small beam 4c in the space structure 1). 11 to 13 are diagrams showing details of the connection between the pole 2 and the small beam 4.

The pole 2 and the small beam 4 are connected through joints 50, 51 and 52. The joint 50 is a joint connected to the lower end of the pole 2 as shown in FIG. The joint 50 has a through hole 50 corresponding to a screw hole provided in the central portion 20 of the pole 2.
a contact surface 50a having b. The joint 50 is provided with four sets of opposing outer wall surfaces 50c similar to the opposing outer wall surface 25 of the pole 2. Further, there is no opening such as the opening 23 of the pole 2 between the opposed outer wall surfaces 50c, and screw holes for fixing the joint 51 described later are provided.

  When the joint 50 is connected to the lower end portion of the pole 2, as shown in FIG. 12, the joint 51 fixing screw hole provided in the joint 50 and the through hole on the joint 51 side are used. 51 is connected to the joint 50. The joint 51 has a function of mediating a joint 52 and a joint 50 described later. The joint 51 is provided with a support portion 51a for supporting the joint 52, and a screw hole 51b for connection with the joint 52 on the support portion 51a.

  Next, the joint 52 will be described with reference to FIG. The joint 52 is connected to the small beam 4 in advance. As shown in FIG. 13, the joint 52 includes two parallel foot portions 52a and a base portion 52b to which the foot portions 52a are connected. A through hole 52c is provided in the upper center of the base portion 52b. The parallel feet 52a are inserted into the grooves 44 of the small beam 4 and fixed with screws. The small beam 4 to which the joint 52 is fixed in this way is connected to the pole 2 and the joint 50 to which the joint 51 is fixed, as shown in FIG. At this time, the joint 51 and the joint 52 are connected by screws in a state where the screw hole 51b and the through hole 52c overlap.

  After connecting the pole 2 and the small beam 4 through the joints 50, 51, and 52 as described above, an adjuster cover 53 and an adjuster 54 are provided as shown in FIG. The adjuster 54 is for adjusting the distance from the floor surface of the office or the like where the space structure 1 is placed, and the adjuster cover 53 is for covering a part of the adjuster 54.

  Next, the connection between the beam 3 and the beam 3 in the spatial structure 1 will be described with reference to FIGS. FIG. 15 is a diagram showing a state of connection between the beams 3 (for example, connection between the beam 3d and the beam 3h in the spatial structure 1). 16-18 is a figure which shows the structure of each joint used for connection of beam 3 mutually. 19 and 20 are diagrams showing details of the connection of the beams 3 by the joint.

  As shown in FIG. 15, the beams 3 are connected to each other through joints 60, 61, and 62. Here, the joint 60 is a joint connected to the end of the beam 3 as shown in FIG. FIG. 16 shows a detailed structure of the joint 60. The joint 60 has an installation surface 60a that comes into contact with the end surface of the joint 3 when installed on the beam 3, and a through hole 60b is provided at the center of the installation surface 60a. When the installation surface 60 a is installed on the end surface of the beam 3, the through hole 60 b takes a position corresponding to the screw hole provided in the central portion 30 of the beam 3. In addition, four protrusions 60 c are provided on the installation surface 60 a corresponding to the groove 34 of the beam 3 so as to facilitate the alignment of the joint 60 to the end surface of the beam 3. Then, as shown in FIG. 15, the joint 60 is connected to the beam 3 by screws.

  Further, the joint 60 is provided with a beam guide portion 60 d that fits into the end portion of the wiring groove portion 38 of the beam 3 when the installation surface 60 a comes into contact with the end surface of the beam 3. By fitting the beam guide part 60d into the wiring groove part 38, the work when the beam 3 is connected to the joint 60 becomes easy. A screw hole 60e for connecting the joint 62 described later and the joint 60 is provided inside the beam guide portion 60d.

17 shows the detailed structure of the joint 61, and FIG. 18 shows the detailed structure of the joint 62. These joints are joints that function in a cooperative manner.
Shown in The joint 61 includes a flat base portion 61a, a claw portion 61b protruding upward from one end of the base portion 61a, and a guide portion 61c extending downward from the other end of the base portion 61a opposite to the claw portion 61b. And have. The base portion 61a is provided with a screw hole 61d.

  The joint 62 is provided with a rectangular through hole 62b in the vicinity of the upper center of the base portion 62a. The lateral width of the through hole 62b is a width that can be accommodated by the joint 61. And the guide groove 62c extended in an up-down direction is provided in the lower part of this through-hole 62b, and the lower base part 62d is further provided in the lower part. The lower base portion 62d protrudes from the guide groove 62c to the front surface, and a through hole 62e is provided on the surface thereof. Further, a protrusion 62f is provided at the upper part of the through hole 62b, and a through hole 62g (see FIG. 20) extending in the vertical direction is provided therein. Further, a claw portion 62h (see FIG. 20) protruding downward is provided on the back surface of the base portion 62a of the joint 62.

  The cooperative function of the joints 61 and 62 is as shown in FIG. That is, the claw portion 61b of the joint 61 and the claw portion 62h of the joint 62 are inserted into the groove portion 34 on the side surface side of the beam 3, and the claw portion 61b engages with the upper end surface 32 forming the groove portion 34. The joint 62 h is engaged with the lower end surface 32 forming the groove 34, so that both joints are fixed at an arbitrary position on the side surface side of the beam 3. How the joint functions of the joints 61 and 62 are performed will be described in detail with reference to FIG.

  As shown in FIG. 20A, the joint 61 is inserted into the through hole 62b with the claw portion 61b of the joint 61 facing the through hole 62b. At this time, the joint 61 is inserted until the guide portion 61c of the joint 61 contacts the guide groove 62c of the joint 62 in a state where the claw portion 61b and the claw portion 62h are housed in the groove portion 34 of the beam 3. And the screw hole 61d of the joint 61 and the through-hole 62g of the joint 62 will be in the state located on the straight line in the up-down direction. Therefore, a screw is inserted from the through hole 62g toward the screw hole 61d, and the tip of the screw is in contact with the end of the guide groove 62c. Therefore, when the screw is rotated, the joint 61 moves relative to the joint 62 in the vertical direction in a state where the guide portion 61c slides on the guide groove 62c. As a result, the distance between the claw portion 61b and the claw portion 62h is adjusted by the rotation of the screw, and the engagement state between the both claw portions and the groove portion 34 (the end surface 32 forming the same) is controlled. Become.

  In other words, when the screw is adjusted to weaken the engaging force of the both claws to the groove 34, the joint 61 and the joint 62 cooperatively slide the opening 33 of the groove 34 on the side surface side of the beam 3, and arbitrarily It is possible to move to the position. Then, by adjusting the screw at the arbitrary position to increase the engagement force between the both claw portions and the groove portion 34, the joint 61 and the joint 62 can be fixed to the beam 3 at the position. That is, the joint 61 and the joint 62 correspond to the connecting means according to the present invention.

  By connecting the joint 60 installed in the other beam 3 to the joints 61 and 62 fixed to the one beam 3 in this way, the connection between the one beam and the other beam is executed. . Specifically, the two joints are screwed through the screw hole 60e of the joint 60 and the through hole 62e of the joint 62, whereby the beams can be connected to each other at an arbitrary position.

Next, a method of connecting the pole 2 to the beam 3 in the spatial structure 1 in the middle thereof will be described with reference to FIGS. FIG. 21 is a diagram illustrating a state of connection between the beam 3 and the pole 2 (for example, connection between the beam 3f and the pole 2h in the spatial structure 1). 22 to 26 are diagrams showing the configuration of a joint and slide connecting device used for connecting the beam 3 and the pole 2.

  As shown in FIG. 21, the beam 3 and the pole 2 are connected through a joint 70 and a slide connecting device 71. Here, the joint 70 is a joint connected to the end of the pole 2 as shown in FIG. FIG. 22 shows a detailed structure of the joint 70. The joint 70 has an installation surface 70 a that comes into contact with an end surface of the joint 2 when installed on the pole 2, and the installation surface 70 a constitutes a base portion 70 b below the joint 70. The base portion 70b is provided with a through hole (not shown) that penetrates to the installation surface 70a. Further, the joint 70 is provided with a support portion 70d having a central portion opened on the base portion 70b having the installation surface 70a and having through holes 70c on both sides of the opening. The through hole provided in the base portion 70b can be accessed through the opening, and the through hole is located at the center of the pole 2 when the installation surface 70a is installed on the end surface of the pole 2. The position corresponding to the screw hole provided in the part 20 is taken. Therefore, it is possible to connect the joint 70 to the pole 2 with a screw.

  Further, the through hole 70c provided in the support portion 70d of the joint 70 corresponds to a screw hole (two screw holes on the left and right ends) provided in the slide connecting device 71, and the joint 70 and the joint 70 are screwed through these. The slide connecting device 71 is connected. When the slide connecting device 71 is relatively small with respect to the joint 70, two slide connecting devices 71 may be connected to one joint 70.

  Here, details of the slide coupling device 71 will be described below. The slide coupling device 71 includes an urging member 72 shown in FIG. 23 and a base member 73 shown in FIG. The two are completely separate members. The urging member 72 includes an urging portion 72a having a contour shape, a protruding portion 72b protruding in one direction from the urging portion 72a, and a protruding portion protruding from the urging portion 72a in a direction opposite to the protruding portion 72b. 72c. The urging portion 72a is formed symmetrically with respect to a line connecting the points where the protrusion 72b and the protrusion 72c are provided. The specific shape of the urging portion 72a is a shape that slightly follows the center line of line symmetry in the vicinity of each protrusion (region indicated by R1 in the drawing), and further approaches the center of the urging portion 72a (in the drawing). The region indicated by R2 has an arc shape so as to be away from the line-symmetrical center line, and in the vicinity of the center of the urging portion 72a (region indicated by R3 in the figure), the shape is substantially parallel to the line-symmetrical center line. By adopting such a shape for the urging portion 72a, the urging portion in the region indicated by R3 is easily bent in the direction perpendicular to the drawing with the urging portion in the region indicated by R1 as an axis. The biasing portion 72a can exert a biasing force in a direction perpendicular to the drawing. Further, the protrusion 72c has a substantially cylindrical protrusion shape, and the protrusion 72b has a shape having a slight lateral width than the protrusion 72c. This lateral width is slightly smaller than the width of the openings 23 and 33 of the pole 2 and the beam 3.

  As shown in FIG. 28, the base member 73 is provided with three screw holes 73b in the center of the base portion 73a. Furthermore, a stepped portion 73c is provided along the longitudinal direction of the base portion 73a on one end surface side of the base portion 73a. Note that the width of the stepped portion 73c (the width in the vertical direction in the drawing) is slightly smaller than the width of the openings 23 and 33 of the pole 2 and the beam 3.

  The function of the urging member 72 and the base member 73 as the slide connecting device 71 in the grooves 24 and 34 of the pole 2 and the beam 3 will be described with reference to FIG. FIG. 25 shows the state of the slide coupling device 71 in the beam 3, but since it is the same in the pole 2, the description thereof is omitted. The groove portion 34 of the beam 3 is formed by the inner wall surfaces of the partition wall 31 and the wall surface 32 extending from the central portion 30 as described above, and the cross-sectional shape thereof is substantially hexagonal. Here, as shown in FIG. 25, the substantially hexagonal apexes in the cross section of the groove 34 are referred to as S1 to S6, and the apexes constituting the opening 33 are referred to as T1 and T2.

  First, as shown in FIG. 25A, the urging member 72 is slid from the opening 33 with respect to the groove 34. At this time, the protrusion 72c is located at the back of the groove 34 (near the vertices S3 and S4), and the protrusion 72b is located near the opening 33 (between the vertices T1 and T2). Moreover, the part located in area | region R3 of the urging | biasing part 72a is located in the inner wall surface vicinity between vertex S1, S2 of the groove part 34, and between vertex S5, S6. At this time, since there is a slight gap between the urging portion 72a and the inner wall surface, the urging portion 72a is not bent.

  In the state shown in FIG. 25A, the biasing member 72 can be freely moved in the groove 34 of the beam 3 through the protrusion 72b. After the urging member 72 is moved to an arbitrary position of the groove 34, the base member 73 is inserted into the groove 34 as shown in FIG. At this time, the surface of the base member 73 where the stepped portion 73c of the base member 73 is not in contact with the surface of the biasing portion 72a of the biasing member 72 on the side where the protruding portion 72b protrudes. A stepped portion 73 c is located in the opening 33.

  In the state shown in FIG. 25 (b), the urging portion 72a of the urging member 72 is pushed into the inner part of the groove 34 by the base member 73, so that the portion located in the region R3 of the urging portion 72a is the partition wall 31. Will contact the inner wall surface (between vertices S2 and S3 and between vertices S4 and S5). The width of the inner wall surface becomes narrower as it goes deeper into the groove 34. Therefore, in the state shown in FIG. 25 (b), the urging portion 72a of the urging member 72 bends as described above, and due to the bending, the urging portion 72a is bent against the wall surface 32 near the opening 33. Generates an urging force that presses against As a result, the slide coupling device 71 including the biasing member 72 and the base member 73 is fixed at an arbitrary position in the beam 3.

  Then, with respect to the screw hole 73b of the slide connecting device 71 fixed in the beam 3, the pole 2 to which the joint 70 is connected with a screw is sandwiched through the through hole 70 provided in the support portion 70d of the joint 70. By connecting, the pole 2 can be installed at an arbitrary position of the beam 3 as in the spatial structure 1 shown in FIG.

  Here, the state at the time of changing the fixed position with respect to the slide coupling device 71 once fixed at an arbitrary position will be described with reference to FIG. First, as shown in FIG. 26A, the base member 73 to which the urging force is applied to the urging member 72 is shifted in the direction of the arrow to a position where the urging force is not applied from the urging member 72 completely. . At this time, when the groove 34 is viewed from the cross-sectional direction, it is as shown in FIG. The urging member 72 is in the state shown in FIG. 26B when the base member 73 is removed. At this time, the base member 73 exists in a space other than the space where the urging member 72 exists in the groove portion 34.

  However, as shown in FIG. 26B, the base member 73 is in a state of interfering with the protruding portion 72 c of the biasing member 72 in the groove portion 34. This means that even when the base member 73 is released from the urging force by the urging member 72, the base member 73 is not freely movable in the groove 34, and its movement is restricted by the urging member 72. means. This is particularly important when the slide coupling device 71 is used in the groove 24 in the pole 2. Since the pole 2 extends in the vertical direction from the floor surface, gravity acts on the base member 73 released from the urging force. Therefore, there is a possibility that the base member 73 falls to the lower part of the pole 2. However, when the slide connecting device 71 is used in the groove portion 24 with the projection 72b side down and the projection 72c side up, the movement of the base member 73 is limited by the projection 72c as described above. It is possible to reliably prevent the member 73 from falling.

In addition, after releasing the base member 73 from the urging force by the urging member 72, the base member 73 is removed from the opening 33, and the urging member 72 is moved to a new position, and then the base member 73 is changed to the groove portion 24, again. The slide coupling device 71 can be fixed by inserting it into the H.34.

  Next, a method of connecting the small beam 4 to the pole 2 in the spatial structure 1 in the middle thereof will be described with reference to FIG. As shown in FIG. 27, the connection between the pole 2 and the small beam 4 is performed via the joints 51 and 52 and the slide connecting device 71 described above. That is, the slide connecting device 71 is inserted into the groove 24 of the pole 2 as described above, and is fixed at a predetermined position. The small beam 4 to which the joint 51 and the joint 52 are connected is connected to the slide connecting device 71 using the through hole on the joint 51 side and the screw hole 73 b of the slide connecting device 71.

  By using the slide connecting device 71 in this way, the pole 2 can be connected and fixed at an arbitrary position with respect to the beam 3, or the small beam 4 can be connected and fixed to the pole 2. The slide connecting device 71 can be used not only for fixing the pole 2 but also for fixing the projector 8 to the beam 3 as shown below. Therefore, the connection and fixation of the projector 8 to the beam 3 in the spatial structure 1 will be described with reference to FIGS.

  As shown in FIG. 28, the projector 8 is connected and fixed to the beam 3 via an attachment device constituted by the joints 80 to 83. At this time, the slide coupling device 71 is provided in the groove 34 on the vertical downward side of the beam 3 to be attached to the projector 8 (the slide coupling device 71 is not shown in FIG. 28). That is, a mounting device such as a joint 80 is attached to the screw hole 73b of the slide connecting device 71 fixed in the groove 34, and the projector 8 is further connected to these joints. Are connected and fixed in a state suspended from the beam 3.

  Here, the attachment device shown in FIG. 28 is an attachment device that can change the image projection direction of the projector 8 to an arbitrary direction in a state where the relative position of the projector 8 to the beam 3 is fixed. For example, as shown in FIGS. 28A and 28B, the direction of the projector 8 can be changed by about 90 degrees without changing the relative position of the projector 8 with respect to the beam 3, and an image can be projected on two different screens. Become. Below, the detail of the attachment apparatus comprised by each joint 80-83 is demonstrated.

  Here, FIG. 29 is a cross-sectional view of the mounting device taken along a plane including the cross section of the beam 3 (the BB plane shown in FIG. 28A), and FIG. 30 shows the mounting device. FIG. 29 is a cross-sectional view of the beam 3 taken along a plane including a longitudinal section in the longitudinal direction (a CC plane shown in FIG. 28B). FIG. 31 is a diagram showing the connection relationship between the joint 81 and the joint 83 in detail. As shown in FIG. 29, the joint 80 is connected to the slide connecting device 71 side through a screw hole 73 b of the slide connecting device 71 provided in the groove 34 of the beam 3. Here, as shown in FIG. 30, the joint 80 has a pedestal shape with a raised central portion, and one end side of the joint 82 is connected to the central portion of the pedestal. The joint 82 has a function of rotating the projector 8 attached to the end thereof by a plunger mechanism. The configuration will be described later.

  Further, a joint 83 is connected to the other end side of the joint 82. The joint 83 is a substantially rectangular column member, and the joint 81 is further connected so as to be able to slide on two opposite surfaces of the column surface. The upper surface of the projector 8 is connected and fixed to the joint 81. Here, based on FIG. 31, focusing on the relative movement between the joints 83 and 81, that is, the operation in which a part of the joint 81 slides on the two surfaces of the joint 83 as described above, the structure of both is described in detail. To do.

A screw hole 83a is provided in the substantially central portion of the two opposing surfaces of the column member of the joint 83, and a screw hole 83b is provided in the tip portion (tip portion close to the projector 8). In the joint 81, two angle adjusting plates 81b arranged in parallel to each other are provided on the base plate 81a to which the upper portion of the projector 8 is connected. The angle adjustment plate 81b is provided with an adjustment groove 81c opened in an arc shape. Further, a support groove 81d is provided below the adjustment groove 81c.

  In the joints 81 and 83 configured as described above, the column member of the joint 83 is inserted between the two angle adjusting plates 81b. Then, a screw is screwed into the screw hole 83 a of the joint 83 through the adjustment groove 81 c of the joint 81. Further, the screw hole 83b provided at the tip end portion of the column member of the joint 83 is screwed with a screw through the back portion of the support groove 81d. Here, by rotating the posture of the joint 83 with respect to the joint 81 about the screw hole 83b (at this time, the screw inserted into the screw hole 83a moves in the adjustment groove 81c), the relative relationship between the two is obtained. It can be changed and can hold any posture by the fastening force of the screw.

  Here, the detailed structure of the joint 82 will be described with reference to FIGS. 30 and 32. FIG. 32 is a top view of the disk 82b constituting the joint 82 and a diagram showing the relative relationship between the disk 82b and the plunger 82a. The joint 82 is mainly composed of two plungers 82a, a disk 82b, and a rotating shaft 82d. The plunger 82a and the rotary shaft 82d are connected to the joint-shaped joint 80 side, and the disk 82b is connected to the joint 83 side in a state of being rotatable with respect to the rotary shaft 82d. Therefore, in the joint 82, the plunger 82a side and the disk 82b side are relatively rotatable.

  As shown in FIG. 32 (a), eight holes 82c are formed on the disk 82b at regular intervals (45 degree intervals). Further, as shown in FIG. 30 and FIG. 32 (b), the plunger 82a and the disk 82b are arranged so that the tip end portion of the plunger 82a can be fitted into the hole 82c. Note that the alternate long and short dash line CL shown in FIG. 32B is a trajectory followed by the center of the hole 82c on the disk 82b. Thus, in the state where the tip portion and the hole 82c are fitted, the rotation of the disk 82b around the rotation shaft 82d is restricted.

  Here, the plunger 82a itself is a general mechanical element, and is provided with a spring that urges the tip portion to be pushed inside. When a certain force is applied to the disk 82b from the outside in a state where the tip portion is fitted in the hole 82b, that is, in a state where the rotation of the disk 82b is restricted as described above, Since the spring is pushed through the tip portion, the tip portion of the plunger 82a is also pushed along with it, and as a result, the fitting between the tip portion and the hole 82b can be released. As a result, the disk 82b can be rotated, and when the disk 82b continues to rotate, the new hole 82c and the tip end portion are fitted, whereby the rotation of the disk 82b is restricted again. As described above, the joint 82 allows the one end side and the other end side to relatively rotate and can maintain the relative positional relationship between the one end side and the other end side at the predetermined position. It is. Note that the joint 82 having the plunger mechanism in the present embodiment can be rotated by 45 degrees by having eight holes 82c in the disk 82b. However, the rotation angle of the joint 82 is appropriately set as required. It is possible to set. For example, twelve holes 82c may be provided in the disk 82b at equal intervals so as to enable rotation in increments of 30 degrees, and the intervals between the holes 82c are not necessarily equal.

The mounting device for the projector 8 configured as described above can adjust the image projection posture of the projector 8 by the relative relationship between the joints 81 and 83, and further adjust the orientation of the projector 8 in the horizontal plane by the joint 82. be able to. Then, the projector 8 is fixed to the slide coupling device 71 via the joints 80 to 83 in a state where the posture and orientation of the projector 8 can be adjusted. Accordingly, the projector 8 can be suspended and fixed to the beam 3 after adjusting the attitude of the projector 8, and the orientation of the projector 8 can be changed while the projector 8 is fixed relative to the beam 3. Become. As a result, the orientation of the projector 8 is changed with the position of the projector 8 being fixed with respect to a so-called multi-screen in which a plurality of screens 7a, 7b, 7c as shown in FIG. Thus, for example, it is possible to project an image from the projector 8 onto an arbitrary screen suitable for the user's application.

  In the spatial structure 1 shown in FIG. 1, by using the slide connecting device 71, a new pole 2 can be connected to the beam 3, or the position of the already connected pole can be easily changed. It becomes possible to form a new arbitrary space. The same applies to the case where the pole 2 and the small beam 4 are connected, and the case where the new beam 3 is further connected to the existing beam 3.

  Therefore, an example of forming a new arbitrary space from the space structure 1 shown in FIG. 1 is shown in FIG. 33, and the operation of the mounting device for the projector 8 in the new arbitrary space will be described below. The difference between the spatial structure 1 shown in FIG. 33 and the spatial structure 1 shown in FIG. 1 is that a new beam 320 is passed between the beam 3b and the beam 3f using the joints 60, 61, and 62. A new pole 310 is connected from the middle of the beam 3b, and a new screen 9 is provided between the pole 310 and the existing pole 2e. Therefore, in the new space structure 1 shown in FIG. 33, in addition to the existing screens 7a to 7c on the same surface of the rectangular body, the screen 9 is provided on another surface of the rectangular body.

  Here, since the projector 8 is connected and fixed to the new beam 320 by the mounting device constituted by the joints 80 to 83 described above, even in an arbitrary space by the new space structure 1 shown in FIG. By appropriately selecting the image projection direction, it is possible to project an image on any of the screens 7a to 7c and the screen 9 suitable for the user's application.

  In the projector mounting apparatus according to the embodiments of the present invention described above, when the image projection destination of the projector 8 is switched from one screen constituting the multi-screen to another screen, the projector in the horizontal plane by the mounting apparatus. With the rotation of 8, the projector may need to be finely adjusted in the horizontal plane. In such a case, the necessary fine adjustment may be performed by adjusting the optical axis by mechanical and electrical functions in the projector 8. Since this point is a well-known technique, detailed description thereof is omitted in this embodiment.

  In addition, the angle formed by the optical axis of the projector 8 attached by the projector attachment device and the screen as the projection destination may deviate from a right angle (for example, the state attached to the spatial structure 1 shown in FIG. 1). In the case of projecting an image on the screen 7a). In such a case, trapezoidal distortion may occur in the image projected on the screen. However, the problem can be solved by using the trapezoidal distortion correction function of the projector 8. Since this trapezoidal distortion correction function is a well-known technique, a detailed description thereof is omitted in this embodiment.

<Example 2>
Next, another embodiment of a mechanism for adjusting the rotation of the projector 8 will be described. In the above-described embodiment, an example in which the direction of image projection of the projector 8 is changed to an arbitrary direction in the horizontal plane while the relative position of the projector 8 to the beam 3 is fixed has been described. In this example, the projector 8 is fixed and the video projection direction is changed to an arbitrary direction in the horizontal plane and the vertical plane. Thus, for example, as shown in FIG. 28, the orientation of the projector 8 is changed by about 90 degrees in the horizontal plane and 45 degrees in the vertical plane without changing the relative position of the projector 8 to the beam 3. Or the projection position in the horizontal and vertical directions on one screen can be adjusted. Below, the detail of the attachment apparatus of the projector 8 which concerns on a present Example is demonstrated based on FIGS. 34-37C.

  Here, FIG. 34 is a cross-sectional view of the mounting device taken along a plane including the longitudinal cross section in the longitudinal direction of the beam 3 (the CC plane shown in FIG. 28B), that is, the same starting point as FIG. It is a figure when the said attachment apparatus is seen from. 35 is a cross-sectional view of the mounting device taken along a plane including the cross section of the beam 3 (the BB plane shown in FIG. 28A), that is, the mounting device from the same starting point as FIG. It is a figure when seeing. 34 and 35, the same components as those of the attachment device shown in FIGS. 29 and 30 are denoted by the same reference numerals, and detailed description thereof is omitted. To do.

  The attachment device according to the present embodiment is different from the attachment device shown in FIGS. 29 and 30 in a portion corresponding to the joints 81 and 83, that is, a joint portion for adjusting the vertical direction of the projector 8. In the mounting device shown in FIG. 20 and the like, the vertical direction of the projector 8 is adjusted by moving the screw relative to the joint 81c in the adjustment groove 81c. In the mounting device according to the present embodiment, the plunger mechanism (including the plunger 82a, the disk 82b, and the hole 82c) that controls the rotation of the projector 8 in the horizontal plane is also used for the rotation of the projector 8 in the vertical plane. By applying, the orientation of the projector 8 can be adjusted to an arbitrary orientation suitable for the user's application in the vertical direction as well as in the horizontal direction.

  Specifically, in the attachment device according to the present embodiment, a joint 93 is used instead of the joint 83, and a joint 91 is used instead of the joint 81. The joint 91 is mainly composed of two plungers 91a, a semi-disc 91b, a hole 91c, and a rotating shaft 91d. The plunger 91a is essentially the same mechanical element as the plunger 82a described above, but the urging force and the like of the tip portion is appropriately adjusted according to the embodiment. . The joint 93 is a substantially rectangular column member similar to the joint 83 described above, and both joints are provided so that the half disk 91b of the joint 91 can slide on two opposite surfaces of the column surface. Is connected. The plunger 91a and the rotation shaft 91d are fixed to the joint 93 side, and the half disk 91b is connected to the joint 93 side in a state of being rotatable with respect to the rotation shaft 91d. Therefore, in the joint 91, the plunger 91a side and the semi-disc 91b side can be relatively rotated.

  As shown in FIG. 34, five holes 91c are formed on the semicircular disk 91b at equal intervals (at an angle of 45 degrees) (in the state shown in FIG. 34, the plunger is placed in the central hole 91c. 91a is overlapping). As in the case of the plunger 82a and the disk 82b, the relative positional relationship between the plunger 91a and the half disk 91b is such that the tip of the plunger 91a can be fitted into the hole 91c. It is determined. Thus, in the state in which the distal end portion of the plunger 91a and the hole 91c are fitted (the state shown in FIG. 34), the rotation around the rotation shaft 91d of the semicircular disk 91b is restricted.

As with the plunger 82a, when the plunger 91a is subjected to a certain amount of force from the outside in a state where the tip portion is fitted in the hole 91c, Since the spring is pushed through the portion, the tip portion of the plunger 91a is also pushed along with it, and as a result, the fitting between the tip portion and the hole 91c can be released. As a result, the semi-disc 91b can be rotated, and when the semi-disc 91b is further rotated, the new hole 91c and the tip end portion are fitted, thereby restricting the rotation of the semi-disc 91b again. As described above, the joints 91 and 93 enable the two joints to relatively rotate, and the relative positional relationship between the two joints is maintained at the predetermined position. In this embodiment, the air holes 91c are provided in increments of 45 degrees, but this angle can be appropriately set as required.

  The mounting device for the projector 8 configured as described above can adjust the orientation of the projector 8 in the horizontal plane and the vertical plane by the action of the plunger 91a in addition to the action of the plunger 82a. Then, the projector 8 is fixed to the slide coupling device 71 via each joint in a state where the posture and orientation of the projector 8 can be adjusted. At this time, the projector 8 is connected to an attachment device composed of these joints via an attachment adapter 8a. Accordingly, the projector 8 can be suspended and fixed to the beam 3 after adjusting the attitude of the projector 8, and the orientation of the projector 8 is set to the horizontal direction and the vertical direction with the projector 8 fixed relative to the beam 3. It can be easily changed. As a result, the orientation of the projector 8 is changed with the position of the projector 8 being fixed with respect to a so-called multi-screen in which a plurality of screens 7a, 7b, 7c as shown in FIG. It is possible to change the projection position in the vertical direction within the screen. Furthermore, even in the case of multi-screens provided above and below the ceiling, floor, table surface, etc., the user can easily select the projection screen of the projector 8.

  Here, when the user adjusts the orientation of the projector 8, in the state shown in FIGS. 34 and 35, the user is required to hold the operation unit 90 and apply rotational torque in the rotational direction of each joint. When the projector 8 is installed at a height that can be reached by the user, this does not cause much trouble. However, when the height is increased, the user cannot easily adjust the orientation of the projector 8. Therefore, in order to facilitate the adjustment of the orientation, it is preferable to attach the operation handle for operation shown in FIGS. 36A to 36C and FIGS. 37A to 37C to the attachment device.

  First, the operation handle 95 shown in FIGS. 36A to 36C will be described. Here, FIG. 36A is a view of the state in which the operation handle 95 is attached as viewed from the side of the projector 8, FIG. 36B is a view of the state from the front, and FIG. FIG. 8 is a diagram showing a state of attachment to the side 8 (a diagram of the projector 8 viewed from above). As shown in these drawings, the operation handle 95 has a substantially C shape, and both ends thereof are connected to the adapter 8 a of the projector 8. As a result, an annular operation unit for adjusting the orientation of the projector 8 is formed so as to surround the projector 8.

  At this time, as shown in FIG. 36A, the annular operation handle 95 defines a vertical frame 95a extending in the vertical direction and a horizontal frame 95b extending in the horizontal direction. The user can easily adjust the orientation of the projector 8 by gripping these frames and applying rotational torque to the attachment device. For example, when the user holds the two vertical frames 95a with both hands, the rotational torque in the vertical direction or the horizontal direction can be easily applied to the projector 8. Further, even if the user holds a relatively distant portion of the horizontal frame 95b, it is possible to easily apply a rotational torque to the projector 8 in the same manner.

First, the operation handle 96 shown in FIGS. 37A to 37C will be described. Here, FIG. 37A is a view of the state in which the operation handle 96 is attached as viewed from the side of the projector 8, FIG. 37B is a view of the state from the rear, and FIG. FIG. 8 is a diagram showing a state of attachment to the side 8 (a diagram of the projector 8 viewed from above). As shown in these drawings, the operation handle 96 has a rod shape, and one end of the operation handle 96 is connected to the adapter 8a of the projector 8 via a mounting bracket 96a. As a result, the operation handle 96 hangs down at a position that is a predetermined distance L away from the location where the projector 8 is attached to the attachment device.

  Therefore, as described above, the user can efficiently apply a rotational torque for adjusting the orientation of the projector 8 to the attachment device having a mechanism that can rotate in the horizontal plane and the vertical plane. In the state shown in FIG. 37A, when the user applies rotational torque in the direction indicated by the arrow, the orientation of the projector 8 is adjusted in the vertical plane, and when the rotational torque is applied in the direction perpendicular to the paper surface of FIG. The orientation in the horizontal plane is adjusted.

  It should be noted that the operation handles 95 and 96 may be always attached to the projector 8 when there is no problem in the projection of the image of the projector 8, and only when the orientation of the projector 8 needs to be adjusted. Alternatively, it may be connected to the adapter 8a.

It is a figure showing the schematic structure of the space structure to which a projector is attached with the projector attachment apparatus which concerns on the Example of this invention. It is an external view of the pole which comprises the space structure shown in FIG. It is sectional drawing of the pole shown in FIG. It is an external view of the beam which comprises the space structure shown in FIG. It is sectional drawing of the beam shown in FIG. It is an external view of the small beam which comprises the space structure shown in FIG. It is sectional drawing of the small beam shown in FIG. It is a figure which shows the mode of the connection of one pole and two beams in the corner part of the spatial structure shown in FIG. It is a figure which shows the structure of the joint used in the connection shown in FIG. It is sectional drawing in the connection of the pole and beam shown in FIG. It is a figure which shows the mode of the connection of the pole and small beam in the lower part of the pole of the space structure shown in FIG. In the connection shown in FIG. 11, it is a figure which shows the mode of two joints connected with the pole lower part. It is a figure which shows the structure of the joint connected with a small beam in the connection shown in FIG. It is a figure which shows a mode that the pole by which two joints shown in FIG. 12 were connected, and the small beam to which the joint shown in FIG. 13 was connected. It is a figure which shows the mode of the connection of the beams in the spatial structure shown in FIG. It is a figure which shows the structure of the 1st joint used in the connection shown in FIG. It is a figure which shows the structure of the 2nd joint used in the connection shown in FIG. It is a figure which shows the structure of the 3rd joint used in the connection shown in FIG. It is a 1st figure which shows a mode that the 2nd joint shown in FIG. 17 and the 3rd joint shown in FIG. 18 exhibit a function cooperatively. It is the 2nd figure which shows a mode that the 2nd joint shown in FIG. 17 and the 3rd joint shown in FIG. 18 exhibit a function cooperatively. In the space structure shown in FIG. 1, it is a figure which shows the mode at the time of connecting a beam and a pole using a slide connection apparatus. It is a figure which shows the structure of the joint used in the connection shown in FIG. It is a figure which shows the structure of the urging | biasing member which comprises the slide connection apparatus used in the connection shown in FIG. It is a figure which shows the structure of the base member which comprises the slide connection apparatus used in the connection shown in FIG. It is a 1st figure explaining a movement in the groove | channel of the slide connection apparatus used in the connection shown in FIG. It is a 2nd figure explaining a motion within the groove | channel of the slide connection apparatus used in the connection shown in FIG. In the space structure shown in FIG. 1, it is a figure which shows the mode at the time of connecting a small beam and a pole using a slide connection apparatus. FIG. 2 is a view showing a state of the projector suspended and connected to a beam by the projector mounting device according to the embodiment of the present invention in the spatial structure shown in FIG. 1. It is a 1st figure which shows the cross section of the projector attachment apparatus which concerns on the Example of this invention. It is a 2nd figure which shows the cross section of the projector attachment apparatus which concerns on the Example of this invention. It is a figure which shows the detailed structure of the joint contained in the projector attachment apparatus which concerns on the Example of this invention. It is a figure which shows the disk of the joint using the plunger mechanism contained in the projector attachment apparatus which concerns on the Example of this invention. It is a figure showing schematic structure of the new space structure formed by adding a new pole and beam in the space structure shown in FIG. It is a 1st figure which shows the cross section of the projector attachment apparatus which concerns on the 2nd Example of this invention. It is a 2nd figure which shows the cross section of the projector attachment apparatus which concerns on 2nd Example of this invention. It is a 1st figure which shows the connection state of the 1st operation handle connected with the projector attachment apparatus which concerns on the 2nd Example of this invention. It is a 2nd figure which shows the connection state of the 1st operation handle connected with the projector attachment apparatus which concerns on the 2nd Example of this invention. It is a 3rd figure which shows the connection state of the 1st operation handle connected with the projector attachment apparatus which concerns on 2nd Example of this invention. It is a 1st figure which shows the connection state of the 2nd operation handle connected with the projector attachment apparatus which concerns on the 2nd Example of this invention. It is a 2nd figure which shows the connection state of the 2nd operation handle connected with the projector attachment apparatus which concerns on 2nd Example of this invention. It is a 3rd figure which shows the connection state of the 2nd operation handle connected with the projector attachment apparatus which concerns on 2nd Example of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Spatial structure 2 (2a-2f, 2h-2j) ... Pole 3 (3a-3i) ... Beam 4 (4b, 4c) ... Small beam 8 ... · Projector 10 ··· Joint 71 ··· Slide connecting device 80 ··· Joint 81 · · · Joint 82 · · · Joint 82a · · · Plunger 82b · · · Disc 82c · · · ··· Hole 82d ··· Rotary shaft 83 · · · Joint 91 · · · Joint 91a · · · Plunger 91b · · · Half disk 91c · · · Hole 91d ··· Rotation Shaft 93 ... Joint 95 ... Operation handle 95a ... Vertical frame 95b ... Horizontal frame 96 ... Operation handle

Claims (9)

One or more columnar bodies extending upward from the floor and one or more horizontal beam bodies extending in the horizontal direction on the floor are connected to each other, or the horizontal beam bodies are connected to each other to form an arbitrary space. A projector mounting device for adjusting a mounting state of a projector capable of projecting an image in a spatial structure capable of forming
Fixing means for fixing the projector to the transverse beam body;
Rotation fixing means for connecting the fixing means and the projector so that the projector can rotate in a horizontal plane parallel to the horizontal beam body,
The projector can project a video in at least two video projection directions by the rotation connecting means. The projector mounting apparatus according to claim 1, wherein the rotation connecting unit further connects the fixing unit and the projector so that the projector can rotate in a vertical plane. One or more columnar bodies extending upward from the floor and one or more horizontal beam bodies extending in the horizontal direction on the floor are connected to each other, or the horizontal beam bodies are connected to each other to form an arbitrary space. A projector mounting device for adjusting a mounting state of a projector capable of projecting an image in a spatial structure capable of forming
Fixing means for fixing the projector to the transverse beam body;
A rotation connecting means for connecting the fixing means and the projector so that the projector can rotate in a vertical plane;
The projector can project a video in at least two video projection directions by the rotation connecting means. When the columnar body or the horizontal beam body is added to or removed from the spatial structure, or the position of the columnar body or the horizontal beam body already connected is changed to form a new arbitrary space, the rotational connection 4. The projector mounting device according to claim 1, wherein the means is capable of rotating the projector so as to correspond to a new video projection position of the projector after the arbitrary space is formed. 5. The fixing means enables the projector to slide along the horizontal beam body, and fixes the projector at an arbitrary position of the horizontal beam body,
When the new arbitrary space is formed in the space structure, the fixing means slides the position of the projector so as to correspond to the new image projection position of the projector after the arbitrary space is formed, and The projector mounting apparatus according to claim 4, wherein the projector after sliding movement is fixed to the horizontal beam body. The transverse beam body has a transverse beam body groove portion that is a semi-closed space that extends along the axial direction in a part or all of the axial direction and has an opening in a cross section of the transverse beam body,
The projector mounting apparatus according to claim 5, wherein the fixing means is slidable in the transverse beam body groove and is connected to the rotation connecting means via the opening. The projector mounting apparatus according to any one of claims 1 to 6, wherein the fixing unit fixes the projector to the cross beam so that the projector is suspended vertically downward. An operation unit that is coupled to the projector and further operates an orientation of the projector via the rotation coupling unit,
The operation unit is
8. The projector is connected to the projector side at a predetermined distance from a connecting portion between the rotary connecting portion and the projector, and extends downward from the connecting point where the user is located. A projector mounting device according to any one of the above. An operation unit that is coupled to the projector and further operates an orientation of the projector via the rotation coupling unit,
The operation unit is
The projector mounting device according to any one of claims 1 to 7, wherein the projector mounting device is connected to the projector so as to surround the projector and to be formed in an annular shape toward a lower portion where the user is located.

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