Projection system and projection system base

Abstract

To easily install a plurality of projectors.SOLUTION: A projection system comprises: a first projector that projects image light; a second projector that projects the image light; and a base having a support surface for supporting the first projector and the second projector. A first fitting hole is provided in the bottom surface of the first projector, and a second fitting hole is provided in the bottom surface of the second projector. In the base, a first fixing structure for fixing the first projector to the support surface is provided corresponding to the first fitting hole, and a second fixing structure for fixing the second projector to the support surface is provided corresponding to the second fitting hole.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a projection system and a base for the projection system. [Background technology]

[0002] Conventionally, projection systems that use multiple projectors to project an image onto a projection target are known (see, for example, Patent Document 1). Patent Document 1 discloses a multi-projection system in which multiple projectors each project a partial image to obtain one large projected image. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2019-117989 Summary of the Invention [Problem to be solved by the invention]

[0004] In order to install multiple projectors in appropriate positions and in appropriate directions, it is necessary to use a large-scale device, which poses a problem of a large workload for installation and adjustment. [Means for solving the problem]

[0005] One aspect of the present disclosure is a projection system comprising: a first projector that projects image light; a second projector that projects image light; and a base having a support surface that supports the first projector and the second projector, wherein a first fitting hole is provided on a bottom surface of the first projector and a second fitting hole is provided on a bottom surface of the second projector, and the base is provided with a first fixing structure that fixes the first projector to the support surface corresponding to the first fitting hole, and a second fixing structure that fixes the second projector to the support surface corresponding to the second fitting hole.

[0006] Another aspect of the present disclosure is a base for a projection system capable of fixing a first projector and a second projector, the base comprising: a support surface; a first fixing structure for fixing the first projector to the support surface; and a second fixing structure for fixing the second projector to the support surface, wherein the first fixing structure has a first protrusion that can be coupled to a first fitting hole provided on a bottom surface of the first projector, and the second fixing structure has a second protrusion that can be coupled to a second fitting hole provided on the bottom surface of the second projector, and at least one of the first protrusion and the second protrusion is movable on the support surface. [Brief explanation of the drawings]

[0007] [Figure 1] FIG. 1 is a perspective view of a projection system according to a first embodiment. [Figure 2] FIG. 1 is a front view of a projection system according to a first embodiment. [Figure 3] FIG. 2 is a plan view of the base according to the first embodiment. [Figure 4] FIG. 1 is a perspective view showing an example of the configuration of a projector. [Figure 5] FIG. 10 is a front view of a projection system according to a second embodiment. [Figure 6] FIG. 10 is a perspective view of a projection system according to a third embodiment. [Figure 7] FIG. 10 is a front view of a projection system according to a third embodiment. [Figure 8] FIG. 10 is a plan view of the base of the third embodiment. [Figure 9] FIG. 10 is a plan view of a fixing jig according to a third embodiment. [Figure 10] FIG. 10 is a side view of a fixing jig according to a third embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0008] Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

[0009] [1. First embodiment] Fig. 1 is a diagram showing the configuration of a projection system 1 according to a first embodiment of the present disclosure. Fig. 2 is a front view of the projection system 1, and the circle in Fig. 2 shows an enlarged front view of a fixing member 4. Fig. 3 is a plan view of the base 2.

[0010] 1, 2, and 3 illustrate the X-axis, Y-axis, and Z-axis. The X-axis, Y-axis, and Z-axis are mutually orthogonal axes and define directions on the base 2. In this embodiment, it is assumed that the base 2 is installed on a horizontal floor, and the X-axis is the left-right direction of the base 2, the Y-axis is the front-rear direction of the base 2, and the Z-axis is the up-down direction of the base 2. When specifying directions, the positive direction is + and the negative direction is -, and positive and negative signs are used in combination to indicate directions, with the direction of the arrow in each figure being the + direction and the direction opposite the arrow being the - direction. For example, the +X direction corresponds to the leftward direction of the base 2, the +Y direction corresponds to the forward direction of the base 2, and the +Z direction corresponds to the upward direction of the base 2.

[0011] The projection system 1 includes a base 2 and a plurality of projectors 10 installed on the base 2. The base 2 only needs to be capable of installing a plurality of projectors 10, and there is no limit to the number of projectors 10 installed on the base 2.

[0012] The base 2 has a generally box-like shape and includes a base 21, a plurality of pillars 23 erected on the base 21, and an installation stand 25 supported by the pillars 23. The distance between the base 21 and the installation stand 25 is large enough to accommodate at least the projector 10.

[0013] In this embodiment, pillars 23 are erected at the four corners of a rectangular base 21, and a rectangular installation stand 25 is supported by these pillars, but this is just one example. The shapes of the base 21 and the installation stand 25 can be changed as desired, and the shape of the installation stand 25 does not need to be the same as that of the base 21. In addition, the number of pillars 23 may be three or more.

[0014] Base 21 is a flat plate-like member and is installed on the floor, for example. Base 21 may also be fixed to a wall or ceiling of an installation room. Installation stand 25 is a flat plate-like member parallel to base 21. The surface of installation stand 25 facing base 21 is referred to as lower surface 25b, and the back side thereof is referred to as upper surface 25a.

[0015] FIG. 3 is a plan view of the base 2 as viewed from the top surface 25a. As shown in FIG. 3, the installation base 25 has a support portion 3A and a support portion 3B arranged side by side in the X-axis direction. The support portion 3A has a groove 31, a scale 33 arranged along the groove 31, and a protrusion 35 arranged around the groove 31. FIG. 3 shows an example in which the support portion 3B is configured symmetrically with the support portion 3A about the X-axis, but the support portion 3B may have the same configuration as the support portion 3A. Hereinafter, when there is no need to distinguish between the support portion 3A and the support portion 3B, they will be referred to as the support portion 3. The protrusion 35 provided on the support portion 3A is an example of a first protrusion.

[0016] The groove 31 penetrates the installation base 25 and extends in the X-axis direction, the Y-axis direction, or another direction in a plan view. A fixing member 4 (described later) can be inserted through the groove 31 from the upper surface 25a to the lower surface 25b. The fixing member 4 can be moved along the groove 31. In the example shown in FIG. 3 , the groove 31 extends parallel to two axes, the X-axis and the Y-axis, and the fixing member 4 can be moved along the groove 31 along the X-axis and the Y-axis. In other words, the fixing member 4 of the support portion 3A can be moved relative to the fixing member 4 of the support portion 3B. The fixing member 4 is detachable from the base 2 and can be easily removed by, for example, pulling the fixing member 4 attached to the groove 31 upward. As will be described later, if multiple types of fixing members 4 are prepared, the fixing members 4 can be replaced according to the specifications of the projector 10.

[0017] In the example of Fig. 3, the groove 31 is an elongated hole having a uniform opening width, but the opening width of the groove 31 does not have to be uniform. In a groove 31 having a shape in which multiple grooves intersect, such as the cross shape shown in Fig. 3, the largest opening width is the width in the diagonal direction of the intersection, for example, the width shown by symbol D in Fig. 3.

[0018] The scale 33 is a scale that serves as a guide for the position in the groove 31, and is provided on the upper surface 25a by, for example, printing, writing, engraving, or attaching a label. A user of the base 2 can use the scale 33 to visually check the position of the fixing member 4.

[0019] The protrusion 35 includes multiple protrusions, preferably three or more protrusions, that come into contact with the projector 10 that is installed on the base 2. These protrusions are arranged around the groove 31, and preferably at positions that surround the groove 31. In other words, the groove 31 is located within a figure surrounded by the multiple protrusions included in the protrusion 35.

[0020] The protrusion 35 is provided on at least one of the upper surface 25a and the lower surface 25b. In detail, the protrusion 35 is provided on the surface facing the projector 10 installed on the base 2. In this embodiment, the projector 10 is installed below the installation stand 25, and therefore the protrusion 35 is arranged on the lower surface 25b.

[0021] The protrusion 35 of this embodiment includes a first protrusion 35a, a second protrusion 35b, and a third protrusion 35c, and the groove 31 is located approximately in the center of the triangle formed by these protrusions. The first protrusion 35a, the second protrusion 35b, and the third protrusion 35c are preferably elastic and made of, for example, an elastomer or other synthetic resin.

[0022] Here, the configuration of the projector 10 will be described. Fig. 4 is a perspective view showing an example of the configuration of the projector 10, and is a perspective view of projectors 10A, 10B, and 10C as seen from the bottom side as specific examples of the projector 10 that can be used in the projection system 1. In this embodiment, when there is no need to distinguish between the projectors 10A, 10B, and 10C, they will be referred to as projector 10.

[0023] The projector 10 includes a projection unit 13 that projects image light. The projection unit 13 includes a light source built into the main body of the projector 10, a light modulation device that modulates the light emitted by the light source, and a projection optical system provided on one surface of the main body of the projector 10. Examples of the light source include lamps such as halogen lamps, xenon lamps, and ultra-high pressure mercury lamps, as well as solid-state light sources such as LEDs and laser light sources. The light modulation device can be, for example, a transmissive liquid crystal panel, a reflective liquid crystal panel, or a digital micromirror device (DMD). The projection optical system includes lenses, mirrors, prisms, and the like that focus the image light modulated by the light modulation device onto a projection surface, and may also include a zoom mechanism and a focus adjustment mechanism that adjusts the focus. The projector 10 also includes built-in circuits that drive each component of the projection unit 13.

[0024] A bottom surface 15 of the projector 10 is provided with a plurality of legs 19 that support the projector 10 when the projector 10 is installed on the floor or a pedestal. The bottom surface 15 is also provided with a fitting hole 17. The fitting hole 17 is a hole that does not penetrate the main body of the projector 10 and has enough strength to support the weight of the projector 10. The fitting hole 17 has a configuration that allows a member for fixing the projector 10 to be coupled thereto, and for example, the fitting hole 17 has a threaded groove cut inside.

[0025] The position of the fitting hole 17 on the bottom surface 15 may differ depending on the model of the projector 10. For example, Fig. 2 shows projectors 10A, 10B, and 10C as examples of projectors 10 having fitting holes 17. These projectors 10 have fitting holes 17A, 17B, and 17C as examples of the fitting holes 17.

[0026] A fitting hole 17A is provided in the bottom surface 15 of the projector 10A. The fitting hole 17A is provided in approximately the center of the bottom surface 15. A fitting hole 17B is provided in the bottom surface 15 of the projector 10B. The fitting hole 17B is located at the rear of the bottom surface 15, that is, on the side of the projection unit 13 that is away from the projection optical system.

[0027] A raised portion 16 is formed on the bottom surface 15 of the projector 10C. The raised portion 16 is a raised portion at the rear of the bottom surface 15, i.e., on the side away from the projection unit 13. A fitting hole 17C is provided in the raised portion 16. For example, in order to accommodate a part that increases the strength of the fitting hole 17C, or to accommodate equipment that is built into the projector 10C, a portion of the body of the projector 10C may be shaped to bulge, thereby forming the raised portion 16.

[0028] In the projection system 1, the projector 10 is fixed to the base 2 by connecting the fixing member 4 to the fitting hole 17. As will be explained below, the base 2 has a structure that allows the position of the fixing member 4 to be adjusted. Therefore, even if there are multiple projectors 10 with fitting holes 17 in different positions on the bottom surface 15, or even if the projector 10 has unevenness such as a raised portion 16 on the bottom surface 15, it can be installed and fixed to the base 2.

[0029] As shown in the circle in FIG. 2 , the fixing member 4 has a threaded portion 41, a plate-shaped base 43 fixed to the threaded portion 41, and a grip portion 45 erected on the base 43. The threaded portion 41 is coupled to the fitting hole 17. For example, the threaded portion 41 is a bolt with a thread formed thereon, which is screwed into the fitting hole 17, which has a threaded groove formed thereon, and is connected to the fitting hole 17. The base 43 is fixed to the base end of the threaded portion 41. The grip portion 45 is a structure that the user grasps with their hand when performing operations such as rotating, pulling up, or pushing in the fixing member 4.

[0030] In the first embodiment, the projector 10 is installed below the installation stand 25. The projector 10 is stored below the installation stand 25 so that the bottom surface 15 faces the lower surface 25b. In this state, the fitting hole 17 faces upward, so the user adjusts the position of the projector 10 so that the position of the fitting hole 17 overlaps with the groove 31.

[0031] The user inserts the screw portion 41 into the groove 31 of the support portion 3, passes through the installation base 25, and makes the screw portion 41 protrude from the underside 25b. The user inserts the screw portion 41 into the fitting hole 17 and rotates the fixing member 4 to couple the fitting hole 17 and the screw portion 41 together, thereby fixing the projector 10.

[0032] With the screw portion 41 inserted into the groove 31, the base 43 is in contact with the upper surface 25a so as to straddle the groove 31, and the base 43 supports the downward load applied to the screw portion 41. Therefore, as shown in FIG. 2, the load of the projector 10 fixed to the installation base 25 is supported by the base 43.

[0033] The base 43 has a size larger than the width of the groove 31. Specifically, the smallest length of the base 43 in a plan view is larger than the largest opening width D of the groove 31. For example, if the base 43 is circular or elliptical, it is preferable that the diameter or minor diameter of the base 43 is larger than the opening width D. In this case, with the screw portion 41 inserted into the groove 31, the fixing member 4 will not pass through the groove 31 and fall below the installation base 25.

[0034] 1 and 2 show an example of the configuration of a projection system 1 in which two support portions 3A and 3B are provided on an installation stand 25, and two projectors 10A and 10B are suspended from the installation stand 25. In FIG.

[0035] Projector 10 can be installed on each of support portion 3A and support portion 3B using fixing member 4. For example, projector 10A is installed on support portion 3A, and projector 10B is installed on support portion 3B. In this case, fixing member 4 having a screw portion 41 that corresponds to fitting hole 17A is attached to support portion 3A. Also, fixing member 4 having a screw portion 41 that corresponds to fitting hole 17B is attached to support portion 3B.

[0036] The correspondence between the fitting holes 17 and the threaded portions 41 is, for example, the pitch of the threads of the threaded portions 41, the diameter of the threaded portions 41, and the length of the threaded portions 41. That is, a plurality of fixing members 4 with different pitches, diameters, and lengths of the threaded portions 41 are prepared, and a fixing member 4 that fits the fitting holes 17 is selected from these threaded portions 41. For example, if the thread pitches, diameters, and lengths of the threaded portions 41 corresponding to the fitting holes 17A and 17B are the same, the same fixing member 4 is attached to the support portions 3A and 3B. On the other hand, if the thread pitches, diameters, and lengths of the threaded portions 41 corresponding to the fitting holes 17A and 17B are different, the fixing member 4 that corresponds to the fitting hole 17A is attached to the support portion 3A, and the fixing member 4 that corresponds to the fitting hole 17B is attached to the support portion 3B.

[0037] When the projector 10 is fixed to the installation base 25, the protrusion 35 abuts against the bottom surface 15. The size of the protrusion 35 in the direction along the Z axis, i.e., the height at which the protrusion 35 protrudes from the lower surface 25b, is not limited, but is preferably higher than the irregularities on the bottom surface 15, for example. The irregularities on the bottom surface 15 are, for example, raised portions 16 or other protrusions. Because the protrusion 35 protrudes from the lower surface 25b, the projector 10, which has irregularities on the bottom surface 15, can be stabilized. In a configuration in which the first protrusion 35a, the second protrusion 35b, and the third protrusion 35c that make up the protrusion 35 are arranged to surround the groove 31, the protrusion 35 abuts against the bottom surface 15 so as to surround the fixing member 4. This makes it possible to prevent the projector 10 from tilting when the screw portion 41 is fastened to the fitting hole 17.

[0038] In the above configuration, the base 2 corresponds to an example of a projection system base. The projector 10A corresponds to an example of a first projector, and the projector 10B corresponds to an example of a second projector. The fitting hole 17A corresponds to an example of a first fitting hole, the fitting hole 17B corresponds to an example of a second fitting hole, and the fitting hole 17C corresponds to an example of a third fitting hole. The groove 31 of the support portion 3A corresponds to an example of a first groove, the groove 31 of the support portion 3B corresponds to an example of a second groove, the fixing member 4 attached to the support portion 3A corresponds to an example of a first fixing structure, and the fixing member 4 attached to the support portion 3B corresponds to an example of a second fixing structure. The protrusion 35 around the support portion 3A corresponds to an example of a first protrusion, and the protrusion 35 around the support portion 3B corresponds to an example of a second protrusion. The lower surface 25b corresponds to an example of a support surface. One of the direction along the X-axis and the direction along the Y-axis corresponds to an example of a first direction, and the other corresponds to an example of a second direction. The scale 33 corresponds to an example of a scale.

[0039] There is no limit to the number of projectors 10 that can be installed on the base 2. For example, the base 2 may be provided with three support portions 3, allowing the projectors 10A, 10B, and 10C to be installed on the base 2. Specifically, by providing three grooves 31 in the installation stand 25 and attaching fixing members 4 to the respective grooves 31, the three projectors 10A, 10B, and 10C can be installed on the base 2. In this case, the projector 10A corresponds to an example of a first projector, the projector 10B corresponds to an example of a second projector, and the projector 10C corresponds to an example of a third projector. The fixing member 4 that fixes the projector 10C corresponds to an example of a third fixing structure. When a protrusion 35 that contacts the projector 10C is provided, the protrusion 35 corresponds to an example of a third protrusion. In this example, a scale 33 may be provided in each of the three grooves 31.

[0040] [2. Second Embodiment] FIG. 5 is a front view of a projection system 1A according to a second embodiment to which the present disclosure is applied. In the second embodiment, components common to those in the first embodiment are assigned the same reference numerals, and descriptions thereof will be omitted. FIG. 5 illustrates the X-axis, Y-axis, and Z-axis in the same manner as in FIGS. 1 to 3. The X-axis corresponds to the left-right direction of the base 2A, the Y-axis corresponds to the front-rear direction of the base 2A, and the Z-axis corresponds to the up-down direction of the base 2A. The +X direction corresponds to the leftward direction of the base 2A, the +Y direction corresponds to the frontward direction of the base 2A, and the +Z direction corresponds to the upward direction of the base 2A.

[0041] The projection system 1A includes a base 2A and multiple projectors 10 installed on the base 2A. The base 2A has a substantially box-like shape and includes a base 21, multiple pillars 23, and an installation stand 27 supported by the pillars 23. In other words, the projection system 1A has a configuration in which the installation stand 25 included in the base 2 of the first embodiment is replaced with the installation stand 27. The installation stand 27 is a flat member parallel to the base 21, and the surface of the installation stand 27 facing the base 21 is referred to as a lower surface 27b, and the back surface thereof is referred to as an upper surface 27a. The distance between the base 21 and the installation stand 27 is at least large enough to allow the user to attach the fixing member 4 from the lower surface 27b.

[0042] The installation base 27 is a plate-like member similar to the installation base 25, and includes a plurality of support parts 3 aligned along the X axis. Each support part 3 is provided with a groove 31 that penetrates between an upper surface 27a, which is the surface of the installation base 27 facing the +Z direction, and a lower surface 27b, which is the surface facing the -Z direction.

[0043] 5, the projector 10 is placed on a base 2A. In this case, the fitting hole 17 provided in the bottom surface 15 faces the upper surface 27a. Then, the fixing member 4 is attached from the lower surface 27b toward the upper surface 27a, and the screw portion 41 is coupled to the fitting hole 17.

[0044] As described in the first embodiment, the grooves 31 extend in the X-axis direction and the Y-axis direction in a plan view, and the position of the fixing member 4 can be moved in these directions. The fixing member 4 is detachable from the base 2A, and can be easily removed by, for example, pulling the fixing member 4 attached to the grooves 31 upward. Furthermore, when multiple types of fixing members 4 are prepared, the fixing member 4 attached to the base 2A can be replaced according to the specifications of the projector 10.

[0045] A scale 33 may be provided on the lower surface 27b at a position corresponding to the groove 31. Furthermore, since it is not easy to visually recognize the scale 33 on the lower surface 27b, the scale 33 may be omitted from the base 2A.

[0046] Protrusions 35 are provided on the upper surface 27a, which is a support surface facing the bottom surface 15. The protrusions 35 include, for example, a first protrusion 35a, a second protrusion 35b, and a third protrusion 35c, and are arranged to form a figure surrounding the groove 31.

[0047] A user using the base 2A places the projector 10 in a desired position on the installation stand 27. Here, if necessary, the user aligns the position of the fitting hole 17 with the groove 31. From below the installation stand 27, the user inserts the screw portion 41 into the groove 31 of the support part 3, passes it through the installation stand 27, and protrudes the screw portion 41 from the upper surface 27a and inserts it into the fitting hole 17. The user rotates the fixing member 4 to couple the fitting hole 17 with the screw portion 41, thereby fixing the projector 10.

[0048] FIG. 5 shows an example of a configuration of a projection system 1A in which two support parts 3 are provided on an installation stand 27, and two projectors 10A and 10B are installed on the installation stand 27.

[0049] Furthermore, a fixing member 4 having a threaded portion 41 corresponding to the fitting hole 17A is attached to one support portion 3 provided on the installation base 27, and a fixing member 4 having a threaded portion 41 corresponding to the fitting hole 17B is attached to the other support portion 3. The correspondence between the fitting holes 17 and the threaded portions 41 is as described above.

[0050] When projector 10 is fixed to installation base 27, protrusion 35 abuts bottom surface 15. Therefore, even if projector 10 has an uneven bottom surface 15, it can be stably fixed to installation base 27. Also, tilting of projector 10 installed on base 2A can be suppressed.

[0051] In the above configuration, the base 2A corresponds to an example of a projection system base. The projector 10A corresponds to an example of a first projector, and the projector 10B corresponds to an example of a second projector. The upper surface 27a corresponds to an example of a support surface.

[0052] There is no limit to the number of projectors 10 that can be installed on the base 2A, and for example, three support parts 3 may be provided on the base 2A, allowing the projectors 10A, 10B, and 10C to be installed on the base 2A. This configuration is the same as in the first embodiment.

[0053] 3. Third Embodiment Fig. 6 is a perspective view of a projection system 1B according to a third embodiment to which the present disclosure is applied, Fig. 7 is a front view of the projection system 1B, Fig. 8 is a plan view of the base 2B, Fig. 9 is a plan view of the fixing jig 6, and Fig. 10 is a side view of the fixing jig 6.

[0054] The third embodiment will be described below with reference to FIGS. 6 to 10. In the third embodiment, components common to the first and second embodiments are denoted by the same reference numerals, and description thereof will be omitted. Similar to FIGS. 1 to 3, FIGS. 6, 7, 8, 9, and 10 illustrate the X-axis, Y-axis, and Z-axis. The X-axis corresponds to the left-right direction of the base 2B and the fixture 6, the Y-axis corresponds to the front-rear direction of the base 2B and the fixture 6, and the Z-axis corresponds to the up-down direction of the base 2B and the fixture 6. The +X direction corresponds to the leftward direction of the base 2B and the fixture 6, the +Y direction corresponds to the frontward direction of the base 2B and the fixture 6, and the +Z direction corresponds to the upward direction of the base 2B and the fixture 6.

[0055] The projection system 1B includes a base 2B and a plurality of projectors 10 installed on the base 2B. The base 2B only needs to be able to install a plurality of projectors 10, and there is no limit to the number of projectors 10 installed on the base 2B.

[0056] The base 2B has a generally box-like shape and includes a base 21, multiple pillars 23, and an installation stand 29 supported by the pillars 23. In other words, the base 2B is configured to include the installation stand 29 instead of the installation stand 25 of the base 2 described in the first embodiment. The distance between the base 21 and the installation stand 29 is large enough to accommodate at least the projector 10.

[0057] Similar to the installation tables 25 and 27, the installation table 29 is a flat plate-like member parallel to the base 21, and the surface of the installation table 29 facing the base 21 is the lower surface 29b, and the reverse surface is the upper surface 29a.

[0058] The installation base 29 is provided with a jig accommodating section 5. The jig accommodating section 5 includes an accommodating hole 51, which is a through-hole formed in the installation base 29, and a support plate 53 provided at the lower end of the accommodating hole 51. The accommodating hole 51 is circular, elliptical, or a hole that is elongated along the X-axis or Y-axis, and penetrates from the upper surface 29a to the lower surface 29b. The shape and size of the accommodating hole 51 need only be such that it can accommodate the fixing jig 6. In a configuration in which multiple projectors 10 can be installed on the base 2B, the extension direction of the accommodating hole 51 is the direction in which the multiple projectors 10 are lined up. For example, in this embodiment, two projectors 10 are installed on the base 2B along the X-axis, and therefore the accommodating hole 51 is a hole that is elongated along the X-axis.

[0059] The support plate 53 is a plate fixed to the lower surface 29b, and covers at least the peripheral portion of the accommodating hole 51. For example, as shown in FIG. 8 , the support plate 53 has a through hole that is slightly smaller than the accommodating hole 51, and is positioned below the peripheral portion of the accommodating hole 51 to support the fixing jig 6 accommodated in the accommodating hole 51 from below. In other words, the fixing jig 6 is accommodated inside the accommodating hole 51, rests on the support plate 53, and is supported by the support plate 53 from below. In this configuration, the surface of the support plate 53 located below the upper surface 29a appears in the receiving hole 51 that opens in the upper surface 29a, and a recess is formed in the upper surface 29a.

[0060] The fixing jig 6 fixes the projectors 10. The fixing jig 6 of this embodiment has two fixing members 61 and a connecting portion 63 that connects these two fixing members 61. Each of the two fixing members 61 fixes one projector 10. In other words, the fixing jig 6 of this embodiment has two fixing members 61 corresponding to the configuration for fixing two projectors 10. In the following, one of the two fixing members 61 will be referred to as fixing member 61A and the other will be referred to as fixing member 61B, and when there is no need to distinguish between them, they will be referred to as fixing member 61.

[0061] 9 and 10, the connecting portion 63 is composed of an inner cylinder 63a and an outer cylinder 63b, with the base end of the inner cylinder 63a fixed to the side surface of the fixed member 61A and the base end of the outer cylinder 63b fixed to the side surface of the fixed member 61B. The outer cylinder 63b is a hollow cylinder. The inner cylinder 63a and the outer cylinder 63b are butt-jointed with each other, and the tip of the inner cylinder 63a is inserted into the outer cylinder 63b.

[0062] The fixing jig 6 includes a fixing structure (not shown) that fixes the inner tube 63a and the outer tube 63b together. The fixing structure may be, for example, a bolt or a screw that penetrates the outer tube 63b and is screwed into the inner tube 63a. Alternatively, holes may be formed in the inner tube 63a and the outer tube 63b at positions where they overlap along the Y axis, and a pin may be inserted through the holes in the inner tube 63a and the outer tube 63b. Releasing the fixation by the fixing structure allows the inner tube 63a and the outer tube 63b to slide relative to each other, thereby changing the length of the connecting portion 63. This allows the distance between the fixing member 61A and the fixing member 61B to be changed and adjusted. As shown in FIG. 9 , the inner tube 63a may be provided with a scale 63c that indicates the relative positional relationship between the inner tube 63a and the outer tube 63b, i.e., the length of the connecting portion 63. With this configuration, the user can easily adjust the length of the connecting portion 63 by using the scale 63c as a guide.

[0063] A groove 65 is provided in the fixing member 61. The groove 65 is a hole extending along the X-axis and the Y-axis and penetrating the fixing member 61. The fixing member 4 can be inserted through the groove 65. FIG. 10 illustrates the fixing jig 6 and the fixing member 4 attached to the fixing member 61. The groove 65 has a width sufficient to allow the threaded portion 41 to pass through, and its shape is not limited. If the groove 65 has a shape extending along the X-axis, the Y-axis, or another direction, the position of the fixing member 4 on the fixing member 61 can be changed and adjusted. Furthermore, the fixing member 4 of the fixing member 61A can be moved relative to the fixing member 4 of the fixing member 61B. The fixing member 4 is detachable from the fixing member 61 and can be easily removed by, for example, pulling the fixing member 4 attached to the groove 65 upward. Furthermore, similarly to the first and second embodiments, a fixing member 4 that fits into the fitting hole 17 can be selected from a plurality of types of fixing members 4 and used.

[0064] Although the groove 65 shown in this embodiment is T-shaped, it may be cross-shaped or have other shapes. Also, the groove 65 may be an elongated hole having a uniform opening width, or the opening width may not be uniform.

[0065] A scale 67 is provided on the fixed member 61 along the groove 65. The scale 67 is a scale that serves as a guide for the position in the groove 65, and is provided on the fixed member 61 by printing, writing, engraving, or attaching a label.

[0066] The size of the fixing member 61 in the direction along the Y axis is larger than the hole opening in the support plate 53 and smaller than the accommodation hole 51. Therefore, when the fixing jig 6 is accommodated in the jig accommodation section 5, the fixing member 61 abuts on the support plate 53 and is supported by the support plate 53. In addition, because the lower part of the groove 65 overlaps with the hole in the support plate 53, the threaded portion 41 of the fixing member 4 that passes through the groove 65 can protrude from the lower surface 29b.

[0067] On the lower surface 29b, protrusions 35 are arranged around the accommodating hole 51. For example, two sets of protrusions 35 are arranged on the lower surface 29b, and each protrusion 35 has a first protrusion 35a, a second protrusion 35b, and a third protrusion 35c. The protrusions 35 are preferably arranged so that a figure with the first protrusion 35a, the second protrusion 35b, and the third protrusion 35c as vertices generally surrounds the groove 65.

[0068] In the projection system 1B, the projector 10 is fixed to the base 2B by coupling the fixing member 4 attached to the fixing member 61 with the fitting hole 17. As described below, the base 2B has a structure that allows the position of the fixing member 4 to be adjusted on the fixing member 61. Therefore, even if multiple projectors 10 have fitting holes 17 in different positions on the bottom surface 15, or even if the projector 10 has unevenness such as a raised portion 16 on the bottom surface 15, they can be installed and fixed to the base 2B. Furthermore, the fixing jig 6 can change the distance between the fixing member 61A and the fixing member 61B. Therefore, the position where the projector 10 is fixed on the underside 29b can be changed significantly. For example, it is possible to install a projector that is larger in size along the X axis than the projector 10 near the center of the underside 29b.

[0069] The projector 10 is installed below the installation stand 29. The projector 10 is stored below the installation stand 29 so that the bottom surface 15 faces the lower surface 29b. In this state, the fitting hole 17 faces upward, so the user adjusts the position of the projector 10 so that the position of the fitting hole 17 overlaps with the groove 65.

[0070] The user inserts the screw portion 41 into the groove 65, passing it through the fixing member 61, causing the screw portion 41 to protrude from the lower surface 29b. The user then inserts the screw portion 41 into the fitting hole 17 and rotates the fixing member 4 to couple the fitting hole 17 and the screw portion 41 together, thereby fixing the projector 10.

[0071] With the screw portion 41 inserted into the groove 65, the base 43 is in contact with the upper surface 29a so as to straddle the groove 65, and the base 43 supports the downward load applied to the screw portion 41. Therefore, as shown in FIG. 2, the load of the projector 10 fixed to the installation base 29 is supported by the base 43 and the fixing member 61.

[0072] 6 and 7 show a configuration in which two fixing members 61 are placed in jig housing portion 5 of projection system 1B and two projectors 10A and 10B are suspended from the fixing members 61. A fixing member 4 having a threaded portion 41 that corresponds to fitting hole 17A is attached to fixing member 61A, and a fixing member 4 having a threaded portion 41 that corresponds to fitting hole 17B is attached to fixing member 61B.

[0073] When projector 10 is fixed to installation stand 29, protrusion 35 abuts bottom surface 15. Therefore, projector 10 having an uneven bottom surface 15 can be fixed to base 2B, and tilt of projector 10 can be suppressed when screw portion 41 is fastened to fitting hole 17.

[0074] In the above configuration, the base 2B corresponds to an example of a projection system base. The projector 10A corresponds to an example of a first projector, and the projector 10B corresponds to an example of a second projector. The groove 65 of the fixing member 61A corresponds to an example of a first groove, the groove 65 of the fixing member 61B corresponds to an example of a second groove, the fixing member 4 attached to the fixing member 61A corresponds to an example of a first fixing structure, and the fixing member 4 attached to the fixing member 61B corresponds to an example of a second fixing structure. The protrusion 35 around the fixing member 61A corresponds to an example of a first protrusion, and the protrusion 35 around the fixing member 61B corresponds to an example of a second protrusion. The lower surface 29b corresponds to an example of a support surface. One of the X-axis and the Y-axis corresponds to an example of a first axis, and the other corresponds to an example of a second axis. The scale 67 corresponds to an example of a scale.

[0075] There is no limit to the number of projectors 10 that can be installed on the base 2B, and for example, three support portions 3 may be provided on the base 2B, allowing projectors 10A, 10B, and 10C to be installed on the base 2B. In this case, the projector 10A corresponds to an example of a first projector, the projector 10B corresponds to an example of a second projector, and the projector 10C corresponds to an example of a third projector. Furthermore, the fixing member 4 that fixes the projector 10C corresponds to an example of a third fixing structure. When a protrusion 35 that contacts the projector 10C is provided, this protrusion 35 corresponds to an example of a third protrusion.

[0076] There is no limit to the number of projectors 10 that can be installed on the base 2B, and for example, three fixing members 61 may be arranged in the jig housing section 5, and projectors 10A, 10B, and 10C may be installed on the base 2B. In this case, the projector 10A corresponds to an example of the first projector, the projector 10B corresponds to an example of the second projector, and the projector 10C corresponds to an example of the third projector. In this example, a scale 33 may be provided in each of the three grooves 65.

[0077] [4. Effects, etc.] As described above, the projection systems 1, 1A, and 1B of the present disclosure include a projector 10A that projects image light and a projector 10B that projects image light. Also, the projection systems 1, 1A, and 1B include bases 2, 2A, and 2B having support surfaces that support the projectors 10A and 10B. The support surface corresponds to the lower surface 25b of the base 2, the upper surface 27a of the base 2A, and the lower surface 29b of the base 2B. A fitting hole 17A is provided in the bottom surface 15 of the projector 10A. A fitting hole 17B is provided in the bottom surface of the projector 10B. The bases 2, 2A, and 2B are provided with a first fixing structure that fixes the projector 10A to the support surface, corresponding to the fitting hole 17A, and a second fixing structure that fixes the projector 10B to the support surface, corresponding to the fitting hole 17B. The first fixing structure and the second fixing structure are, for example, fixing members 4.

[0078] This allows a plurality of projectors 10 to be installed on the bases 2, 2A, and 2B, and allows the positioning of these plurality of projectors 10 to be easily performed.

[0079] The shape of fitting hole 17A may be different from that of fitting hole 17B. In this case, fixing member 4 for fixing fitting hole 17A may have a different structure from fixing member 4 for fixing fitting hole 17B.

[0080] This allows multiple projectors 10 with fitting holes 17 of different shapes and specifications to be installed on the bases 2, 2A, and 2B, and their fixing positions to be easily adjusted. This makes it possible to install the projectors 10 in accordance with various projectors 10 with different manufacturers, functions, sizes, etc.

[0081] The shape of fitting hole 17A may be the same as that of fitting hole 17B. In this case, fixing member 4 for fixing fitting hole 17A and fixing member 4 for fixing fitting hole 17B can have the same configuration.

[0082] This allows a plurality of projectors 10 with the same shape and specifications to be installed on the base.

[0083] At least a portion of the fixing member 4 for fixing the fitting hole 17A and the fixing member 4 for fixing the fitting hole 17B can be attached to and detached from the support surface.

[0084] This allows the fixing member 4 that is compatible with the projector 10 to be selected from among the plurality of fixing members 4 in accordance with the shape and specifications of the fitting hole 17 that the projector 10 has.

[0085] Fitting holes 17A and 17B are threaded holes having a screw structure therein. Fixing member 4 to be coupled to fitting hole 17A and fixing member 4 to be coupled to fitting hole 17B each have a screw structure that allows them to be coupled to fitting holes 17A and 17B, respectively.

[0086] This allows multiple projectors 10 with fitting holes 17 of different shapes and specifications to be installed on the bases 2, 2A, and 2B, and their positions to be easily adjusted. This makes it possible to install the projectors 10 in accordance with various projectors 10 with different manufacturers, functions, sizes, etc.

[0087] The projection systems 1, 1A, and 1B may each include a projector 10C as a third projector. The base 2, 2A, and 2B may each be provided with a fixing member 4 as a third fixing structure that fixes the projector 10C to a support surface, in correspondence with the fitting hole 17C of the projector 10C.

[0088] According to this, three projectors 10 can be installed on the bases 2, 2A, and 2B.

[0089] In the bases 2, 2A, and 2B, the fixing member 4 that fixes the fitting hole 17A is movable along the support surface relative to the fixing member 4 that fixes the fitting hole 17B.

[0090] This makes it possible to adjust the positions at which the projectors 10A and 10B are fixed by moving the fixing members 4 in accordance with the sizes and shapes of the projectors 10A and 10B. This makes it possible to accommodate various combinations of projectors 10 with different sizes and shapes.

[0091] When the projection systems 1, 1A, and 1B are viewed vertically downward in a plan view, the fixing member 4 that fixes the fitting hole 17A is movable relative to the fixing member 4 that fixes the fitting hole 17B. The direction in which the fixing member 4 is movable relative to the fitting hole 17A is at least one of a first direction in a plane parallel to the support surface and a second direction perpendicular to the first direction. The first direction is, for example, a direction along the X-axis, and the second direction is, for example, a direction along the Y-axis.

[0092] This makes it possible to adjust the positions at which the projectors 10A and 10B are fixed by moving the fixing members 4 in accordance with the sizes and shapes of the projectors 10A and 10B. This makes it possible to accommodate various combinations of projectors 10 with different sizes and shapes.

[0093] In the projection systems 1, 1A, and 1B, a protrusion 35 that protrudes from the support surface toward the projector 10A is provided on the support surface of the bases 2, 2A, and 2B. The protrusion 35 comes into contact with the bottom surface 15 of the projector 10A when the projector 10A is fixed by the fixing member 4. In addition, a protrusion 35 that protrudes toward the bottom surface 15 of the projector 10B is provided on the support surface of the bases 2, 2A, and 2B. The protrusion 35 comes into contact with the bottom surface 15 of the projector 10B when the projector 10B is fixed by the fixing member 4.

[0094] According to this, by abutting the protrusion 35 against the bottom surface 15 of the projector 10A, the projector 10A can be stabilized. In particular, when the screw portion 41 is coupled to the fitting hole 17 provided in the bottom surface 15, a force that pulls the bottom surface 15 toward the support surface acts on the projector 10A. By receiving this force through the protrusion 35, the projector 10A can be reliably pulled toward the support surface, and tilting of the projector 10A due to fixation by the fixing member 4 can be suppressed. The same effect can be obtained for the projector 10B.

[0095] The protrusion 35 includes a first protrusion 35a, a second protrusion 35b, and a third protrusion 35c. On the support surface, the fixing member 4 is located within a figure surrounded by points that include the positions of the first protrusion 35a, the second protrusion 35b, and the third protrusion 35c.

[0096] According to this, the protruding portion 35 contacts the bottom surface 15 at three or more points surrounding the fixing member 4, which makes it possible to stabilize the projector 10A fixed by the fixing member 4 and to suppress tilting of the projector 10A due to fixing. A similar effect can be obtained with a configuration in which the protruding portion 35 contacts the bottom surface 15 of the projector 10B.

[0097] The fixing member 4 that fixes the fitting hole 17A is movable relative to the fixing member 4 that fixes the fitting hole 17B along a first axis in a plane parallel to the support surface. The first axis is, for example, the X axis, and the second axis is, for example, the Y axis.

[0098] This makes it possible to adjust the positions at which the projectors 10A and 10B are fixed by moving the fixing members 4 in accordance with the sizes and shapes of the projectors 10A and 10B. This makes it possible to accommodate various combinations of projectors 10 with different sizes and shapes.

[0099] The fixing member 4 that fixes the fitting hole 17A is movable relative to the fixing member 4 that fixes the fitting hole 17B along a second axis that is perpendicular to the first axis and in a plane that is parallel to the support surface.

[0100] This makes it possible to adjust the positions at which the projectors 10A and 10B are fixed by moving the fixing members 4 in accordance with the sizes and shapes of the projectors 10A and 10B. This makes it possible to accommodate various combinations of projectors 10 with different sizes and shapes.

[0101] In the bases 2 and 2B, scales 33 and 67 corresponding to the range in which the fixed member 4 can move along the first axis are provided on the support surfaces.

[0102] According to this, the user can objectively recognize the position and amount of movement of the fixed member 4 using the scales 33 and 67, and therefore the positions of the projectors 10A and 10B can be adjusted more easily.

[0103] The bases 2 and 2A have grooves 31 as first grooves to which fixing members 4 for fixing fitting holes 17A are attached. The bases 2 and 2A also have grooves 31 as second grooves to which fixing members 4 for fixing fitting holes 17B are attached. The fixing members 4 for fixing fitting holes 17A are movable along the grooves 31 of the support part 3A. The fixing members 4 for fixing fitting holes 17B are movable along the grooves 31 of the support part 3B. Base 2B has groove 65 as a first groove to which fixing member 4 that fixes fitting hole 17A is attached. Base 2B also has groove 65 as a second groove to which fixing member 4 that fixes fitting hole 17B is attached. Fixing member 4 that fixes fitting hole 17A is movable along groove 65 of fixing member 61A. Fixing member 4 that fixes fitting hole 17B is movable along groove 65 of fixing member 61B.

[0104] This makes it possible to adjust the positions at which the projectors 10A and 10B are fixed by moving the fixing members 4 in accordance with the sizes and shapes of the projectors 10A and 10B. This makes it possible to accommodate various combinations of projectors 10 with different sizes and shapes.

[0105] The base 2B is provided with a recess formed by the accommodation hole 51 and the support plate 53. The fixing member 4 that fixes the fitting hole 17A and the fixing member 4 that fixes the fitting hole 17B are movable along the recess.

[0106] This makes it possible to adjust the positions at which the projectors 10A and 10B are fixed by moving the fixing members 4 in accordance with the sizes and shapes of the projectors 10A and 10B. This makes it possible to accommodate various combinations of projectors 10 with different sizes and shapes.

[0107] 5. Other Embodiments The above-described embodiment is a preferred embodiment of the present invention, but the present invention is not limited to this and various modifications are possible within the scope of the gist of the present invention.

[0108] For example, the fixing member 4 of the above embodiment may be provided with a member that prevents it from falling off from the support part 3. Specifically, a fall-prevention member made of a protrusion or plate that protrudes in the radial direction of the screw part 41 may be provided at the base end of the screw part 41. With this configuration, when the screw part 41 is not coupled to the projector 10, the installation base 25 is sandwiched between the fall-prevention member and the base 43, thereby preventing the fixing member 4 from coming off from the installation base 25. This configuration of the fixing member 4 is similarly effective for the installation bases 27 and 29. Furthermore, by making the fall-prevention member detachable from the fixing member 4, the fixing member 4 can be made detachable from the installation bases 25, 27, and 29.

[0109] For example, the installation stand 25 of the first embodiment is configured to have a protrusion 35 on the lower surface 25b, and the installation stand 27 of the second embodiment is configured to have a protrusion 35 on the upper surface 27a. As a configuration that combines these, the installation stand 25 may be provided with the protrusion 35 on both the upper surface 25a and the lower surface 25b. Similarly, the installation stand 27 may be provided with the protrusion 35 on both the upper surface 27a and the lower surface 27b. With these configurations, it is possible to both install the projector 10 on the lower surface 25b as in the first embodiment, and to install the projector 10 on the upper surface 27a as in the second embodiment.

[0110] In the above embodiment, the fixing member 4 is not limited to a screw structure, and may have, for example, a snap-fit structure with a claw. In this case, the fitting hole 17 may have a protrusion therein for the claw of the snap-fit to catch on.

[0111] In the above embodiment, the multiple projectors 10 installed on the base 2 may be fixed so that the projection units 13 face in the same direction, or may be fixed so that the projection units 13 of each projector 10 face in different directions.

[0112] In the above embodiment, the bases 2, 2A, and 2B may be configured without the base 21. That is, the pillars 23 may be configured to directly contact the floor or wall. Also, the pillars 23 may be provided with a hanging structure so that they are hung from the ceiling.

[0113] In the above embodiment, the bases 2, 2A, and 2B may be divided into two parts along the X-axis or the Y-axis. In this case, the positions or sizes along the Z-axis of one part and the other part may be different.

[0114] [6. Notes] A summary of this disclosure is provided below. (Supplementary Note 1) A projection system comprising: a first projector that projects image light; a second projector that projects image light; and a base having a support surface that supports the first projector and the second projector, wherein a first fitting hole is provided on a bottom surface of the first projector, and a second fitting hole is provided on a bottom surface of the second projector, and a first fixing structure that fixes the first projector to the support surface is provided on the base in correspondence with the first fitting hole, and a second fixing structure that fixes the second projector to the support surface is provided in correspondence with the second fitting hole. This allows multiple projectors to be easily installed on the base.

[0115] (Supplementary Note 2) The projection system described in Supplementary Note 1, wherein the first fitting hole has a different shape from the second fitting hole, and the first fixing structure has a different structure from the second fixing structure. This allows multiple projectors with fitting holes of different shapes and specifications to be mounted on the base, making it possible to mount multiple projectors on the base in accordance with various projectors with different manufacturers, functions, sizes, etc.

[0116] (Appendix 3) A projection system described in Appendix 1 or Appendix 2, wherein the shape of the first fitting hole is the same as the shape of the second fitting hole, and the first fixing structure has a configuration in common with the second fixing structure. This allows multiple projectors with the same shape and specifications to be installed on the base.

[0117] (Supplementary Note 4) The projection system according to any one of Supplementary Note 1 to Supplementary Note 3, wherein at least a portion of the first fixing structure and the second fixing structure is detachable from the support surface. This allows the fixing member 4 that is compatible with the projector 10 to be selected from among the plurality of fixing members 4 in accordance with the shape and specifications of the fitting hole 17 that the projector 10 has.

[0118] (Appendix 5) A projection system described in any one of Appendices 1 to 4, wherein the first fitting hole and the second fitting hole are threaded holes having a threaded structure therein, the first fixing structure has a threaded structure that can be connected to the first fitting hole, and the second fixing structure has a threaded structure that can be connected to the second fitting hole. This allows a plurality of projectors having fitting holes with different shapes and specifications to be mounted on the base, which means that a variety of projectors with different manufacturers, functions, sizes, etc. can be mounted on the base.

[0119] (Appendix 6) A projection system described in any one of Appendices 1 to 5, comprising a third projector that projects image light, wherein a third fitting hole is provided on the bottom surface of the third projector, and a third fixing structure that fixes the third projector to the support surface is provided on the base in correspondence with the third fitting hole. This allows three projectors to be installed on the base.

[0120] (Supplementary Note 7) The projection system described in any one of Supplementary Note 1 to Supplementary Note 6, wherein the first fixing structure is movable relative to the second fixing structure along the support surface. This allows the positions at which the projectors are fixed to be adjusted by relatively moving the first fixing structure in accordance with the sizes and shapes of the multiple projectors installed on the base, making it possible to install multiple projectors on the base in accordance with various combinations of projectors with different sizes and shapes.

[0121] (Appendix 8) A projection system as described in Appendix 6, wherein, when the projection system is viewed in a plan view facing downward in the vertical direction, the first fixing structure is movable relative to the second fixing structure in a first direction in a plane parallel to the support surface and in a second direction perpendicular to the first direction. This allows the positions at which the projectors are fixed to be adjusted by relatively moving the first fixing structure in accordance with the sizes and shapes of the multiple projectors installed on the base, making it possible to install multiple projectors on the base in accordance with various combinations of projectors with different sizes and shapes.

[0122] (Appendix 9) A base for a projection system capable of fixing a first projector and a second projector, comprising: a support surface; a first fixing structure for fixing the first projector to the support surface; and a second fixing structure for fixing the second projector to the support surface, wherein the first fixing structure has a first protrusion that can be coupled to a first fitting hole provided on a bottom surface of the first projector, and the second fixing structure has a second protrusion that can be coupled to a second fitting hole provided on the bottom surface of the second projector, and at least one of the first protrusion and the second protrusion is movable on the support surface. This provides the same effects as the projection system described in Supplementary Note 1.

[0123] (Appendix 10) The projection system base according to appendix 9, wherein the first protrusion has a different shape from the second protrusion. This provides the same effects as the projection system described in Supplementary Note 2.

[0124] (Supplementary Note 11) The projection system base according to Supplementary Note 9 or Supplementary Note 10, wherein the shape of the first protrusion is the same as the shape of the second protrusion. This provides the same effects as the projection system described in Supplementary Note 3.

[0125] (Supplementary Note 12) The projection system base according to any one of Supplementary Note 9 to Supplementary Note 11, wherein at least a portion of the first fixing structure and the second fixing structure is detachable from the support surface. This provides the same effects as the projection system described in Supplementary Note 4.

[0126] (Appendix 13) A base for a projection system described in any one of Appendices 9 to 12, wherein the first fitting hole and the second fitting hole are threaded holes having a threaded structure therein, the first fixing structure has a threaded structure that can be connected to the first fitting hole, and the second fixing structure has a threaded structure that can be connected to the second fitting hole. This provides the same effects as the projection system described in Supplementary Note 5.

[0127] (Appendix 14) A base for a projection system described in any one of Appendices 9 to 13, which is capable of fixing a third projector in addition to the first projector and the second projector, and which includes a third fixing structure that fixes the third projector to the support surface, the third fixing structure having a third protrusion that can be coupled to a third fitting hole provided on the bottom surface of the third projector, and at least one of the first protrusion, the second protrusion, and the third protrusion is movable on the support surface. This provides the same effects as the projection system described in Supplementary Note 6.

[0128] (Appendix 15) A base for a projection system described in any one of Appendices 9 to 14, wherein the support surface is provided with a first protrusion that protrudes from the support surface toward the first projector, and the first protrusion contacts the bottom surface of the first projector when the first projector is fixed by the first fixing structure. With this, the first projector can be stabilized by abutting the first protrusion against the bottom surface of the first projector. In particular, when the first fixing structure is coupled to the first fitting hole provided in the bottom surface, a force that pulls the bottom surface toward the support surface acts on the first projector. By receiving this force through the first protrusion, the first projector can be reliably pulled toward the support surface, and tilting of the first projector due to fixation by the first fixing structure can be suppressed.

[0129] (Appendix 16) The base for a projection system described in Appendix 15, wherein the first protrusion includes a first protrusion, a second protrusion, and a third protrusion, and the first fixing structure is positioned on the support surface within a figure surrounded by points including the positions of the first protrusion, the second protrusion, and the third protrusion. According to this, the first protrusion contacts the bottom surface of the first projector at three or more points surrounding the first fixing structure, thereby stabilizing the first projector fixed by the first fixing structure and suppressing tilt of the first projector due to fixing.

[0130] (Appendix 17) A base for a projection system described in any one of Appendices 9 to 16, wherein the first fixing structure is movable relative to the second fixing structure along a first axis in a plane parallel to the support surface. This allows the positions at which the projectors are fixed to be adjusted by relatively moving the first fixing structure in accordance with the sizes and shapes of the multiple projectors installed on the base, making it possible to install multiple projectors on the base in accordance with various combinations of projectors with different sizes and shapes.

[0131] (Appendix 18) A base for a projection system as described in Appendix 17, wherein the first fixing structure is movable relative to the second fixing structure along a second axis in a plane perpendicular to the first axis and parallel to the support surface. This allows the positions at which the projectors are fixed to be adjusted by relatively moving the first fixing structure in accordance with the sizes and shapes of the multiple projectors installed on the base, making it possible to install multiple projectors on the base in accordance with various combinations of projectors with different sizes and shapes.

[0132] (Appendix 19) A base for a projection system as described in Appendix 17 or Appendix 18, wherein the support surface is provided with a scale corresponding to the range within which the first fixing structure can move along the first axis. This allows the user to objectively recognize the position and amount of movement of the first fixing structure using the scale, making it easier to adjust the position of the projector.

[0133] (Appendix 20) A base for a projection system described in any one of Appendices 9 to 19, wherein the base has a first groove to which the first fixing structure is attached and a second groove to which the second fixing structure is attached, the first fixing structure being movable along the first groove, and the second fixing structure being movable along the second groove. This allows the positions at which the projectors are fixed to be adjusted by moving the first fixing structure and the second fixing structure in accordance with the sizes and shapes of the multiple projectors installed on the base, making it possible to install multiple projectors on the base in accordance with various combinations of projectors with different sizes and shapes.

[0134] (Appendix 21) A base for a projection system according to any one of Appendices 9 to 19, wherein a recess is provided in the base, and the first fixing structure and the second fixing structure are movable along the recess. This allows the positions at which the projectors are fixed to be adjusted by moving the first fixing structure and the second fixing structure in accordance with the sizes and shapes of the multiple projectors installed on the base, making it possible to install multiple projectors on the base in accordance with various combinations of projectors with different sizes and shapes. [Explanation of symbols]

[0135] 1, 1A, 1B...Projection system, 2, 2A, 2B...Base (base for projection system), 3...Support part, 3A...Support part, 3B...Support part, 4...Fixing member (first fixing structure, second fixing structure, third fixing structure), 5...Jig accommodating part, 6...Fixing jig, 10...Projector, 10A...Projector (first projector), 10B...Projector (second projector), 10C...Projector (third projector), 13...Projection part, 15...Bottom surface, 16...Rising part, 17...Mating hole, 17A...Mating hole (first mating hole), 17B...Mating hole (second mating hole), 17C...Mating hole (third mating hole), 19...Legs, 21...Base, 2 3...Column, 25...Installation stand, 25a...Top surface, 25b...Bottom surface (support surface), 27...Installation stand, 27a...Top surface (support surface), 27b...Bottom surface, 29...Installation stand, 29a...Top surface , 29b...lower surface (support surface), 31...groove (first groove, second groove), 33...scale (scale), 35...protrusion (first protrusion, second protrusion, third protrusion), 35a... First protrusion, 35b...second protrusion, 35c...third protrusion, 41...screw portion, 43...base, 45...gripping portion, 51...accommodating hole, 53...support plate, 61...fixing member, 61A...fixing member, 61B...fixing member, 63...connecting portion, 63a...inner tube, 63b...outer tube, 63c...scale, 65...groove (first groove, second groove), 67...scale (gradations).

Claims

1. a first projector that projects image light; a second projector that projects image light; a base having a support surface that supports the first projector and the second projector, a first fitting hole is provided on the bottom surface of the first projector; a second fitting hole is provided on the bottom surface of the second projector; a first fixing structure for fixing the first projector to the support surface that corresponds to the first fitting hole is provided on the base, and a second fixing structure for fixing the second projector to the support surface that corresponds to the second fitting hole, in a projection system.

2. The projection system according to claim 1 , wherein the first fitting hole has a different shape from the second fitting hole, and the first fixing structure has a different structure from the second fixing structure.

3. The projection system according to claim 1 , wherein the first fitting hole has the same shape as the second fitting hole, and the first fixing structure has a common configuration with the second fixing structure.

4. The projection system according to claim 1 , wherein at least a portion of the first fixing structure and the second fixing structure is detachable from the support surface.

5. the first fitting hole and the second fitting hole are threaded holes having a threaded structure therein, The projection system according to claim 1 , wherein the first fixing structure has a screw structure that can be coupled to the first fitting hole, and the second fixing structure has a screw structure that can be coupled to the second fitting hole.

6. a third projector that projects image light; a third fitting hole is provided on the bottom surface of the third projector; The projection system according to claim 1 , wherein the base is provided with a third fixing structure corresponding to the third fitting hole for fixing the third projector to the support surface.

7. 6. The projection system according to claim 1, wherein the first fixed structure is movable relative to the second fixed structure along the support surface.

8. 7. The projection system of claim 6, wherein when the projection system is viewed in a plan view facing downward in the vertical direction, the first fixing structure is movable relative to the second fixing structure in a first direction in a plane parallel to the support surface and in a second direction perpendicular to the first direction.

9. A projection system base capable of fixing a first projector and a second projector, a support surface; a first fixing structure that fixes the first projector to the support surface; a second fixing structure that fixes the second projector to the support surface, the first fixing structure has a first protrusion that can be coupled to a first fitting hole that is provided on a bottom surface of the first projector; the second fixing structure has a second protrusion that can be coupled to a second fitting hole that is provided on a bottom surface of the second projector, At least one of the first protrusion and the second protrusion is movable on the support surface. Base for projection system.

10. The projection system base according to claim 9 , wherein the first protrusion has a different shape from the second protrusion.

11. 10. The projection system base according to claim 9, wherein the first protrusion has the same shape as the second protrusion.

12. 10. The projection system base according to claim 9, wherein at least a portion of the first fixing structure and the second fixing structure is detachable from the support surface.

13. the first fitting hole and the second fitting hole are threaded holes having a threaded structure therein, 10. The projection system base according to claim 9, wherein the first fixing structure has a screw structure that can be coupled to the first fitting hole, and the second fixing structure has a screw structure that can be coupled to the second fitting hole.

14. a third projector can be fixed in addition to the first projector and the second projector, a third fixing structure that fixes the third projector to the support surface; the third fixing structure has a third protrusion that can be coupled to a third fitting hole that is provided on a bottom surface of the third projector, 10. The projection system base according to claim 9, wherein at least one of the first protrusion, the second protrusion, and the third protrusion is movable on the support surface.

15. a first protrusion protruding from the support surface toward the first projector; The projection system base according to claim 9 , wherein the first protrusion contacts a bottom surface of the first projector when the first projector is fixed by the first fixing structure.

16. the first protrusion includes a first protrusion, a second protrusion, and a third protrusion; 16. The projection system base of claim 15, wherein the first fixing structure is located on the support surface within a figure surrounded by points including the positions of the first protrusion, the second protrusion, and the third protrusion.

17. 17. The projection system base according to claim 9, wherein the first fixed structure is movable relative to the second fixed structure along a first axis in a plane parallel to the support surface.

18. 18. The projection system base according to claim 17, wherein the first fixed structure is movable relative to the second fixed structure along a second axis in a plane that is perpendicular to the first axis and parallel to the support surface.

19. 18. The projection system base according to claim 17, wherein the support surface is provided with a scale corresponding to a range within which the first fixing structure can move along the first axis.

20. the base has a first groove to which the first fixing structure is attached and a second groove to which the second fixing structure is attached; 10. The projection system base according to claim 9, wherein the first fixing structure is movable along the first groove, and the second fixing structure is movable along the second groove.

21. 10. The projection system base according to claim 9, wherein the base is provided with a recess, and the first fixing structure and the second fixing structure are movable along the recess.

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