Projection system, installation unit, and support device

Abstract

To provide a projection system, an installation base, and a support device in which a malfunction caused by a cable routed on the ground is prevented.SOLUTION: A projection system of the present invention comprises a first projector that projects image light on a screen, and a support device. The support device has a cable holding part that holds a cable connected to the first projector at one end, and a support part that locates the cable holding part with respect to an installation surface of the first projector. On an upper side in the vertical direction, the distance from the installation surface to the holding part is longer than the distance from the installation surface to a top surface of the first projector.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a projection system, an installation unit, and a support device. [Background technology]

[0002] Patent Document 1 listed below discloses a system in which a projector is stored in a box placed outside a building and an image is projected from the projector onto a screen. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2021-188491 A Summary of the Invention [Problem to be solved by the invention]

[0004] In the above system, the projector is placed in a wet environment such as a bathroom, so there is a risk of electricity leaking through the power cable or LAN cable due to moisture on the ground, and there is also a risk that viewers of the projected images will get caught on cables running along the ground. [Means for solving the problem]

[0005] In order to solve the above problems, one embodiment of the projection system of the present invention is a projection system comprising a first projector that projects image light onto a screen and a support device, wherein the support device has a cable holding portion that holds a cable having one end connected to the first projector, and a support portion that positions the cable holding portion relative to an installation surface of the first projector, and at the vertically upper side, the distance from the installation surface to the cable holding portion is greater than the distance from the installation surface to the top surface of the first projector.

[0006] Another aspect of the installation unit of the present invention is an installation unit on which a projector that projects image light is installed and to which a cable is connected, and which comprises an installation stand including an installation surface on which the projector is installed, and a support device connected to the installation stand and supporting the cable, the support device having a cable holding portion that holds the cable and a support portion that positions the cable holding portion relative to the installation surface, and in the vertical direction, the distance from the installation surface to the cable holding portion is greater than the distance from the installation surface to the top surface of the projector.

[0007] Another aspect of the support device of the present invention is a support device used in a projection system including a projector that projects image light onto a screen, the support device having a cable holding portion that holds a cable having one end connected to the projector, and a support portion that positions the cable holding portion relative to an installation surface of the projector, and in the vertical direction, the distance from the installation surface to the cable holding portion is greater than the distance from the installation surface to the top surface of the projector. [Brief description of the drawings]

[0008] [Figure 1] FIG. 1 is a schematic configuration diagram of a projection system according to an embodiment. [Diagram 2] FIG. 2 is a perspective view showing a schematic configuration of an installation unit. [Diagram 3] FIG. 2 is a perspective view showing a configuration of a support device. [Figure 4] 11 is a side cross-sectional view showing a state in which the support device is attached to the installation table. FIG. [Diagram 5] 2 is a perspective view showing the configuration of a mounting portion 17. FIG. [Figure 6] 4 is a cross-sectional view showing a main configuration of a cable holding portion. FIG. [Figure 7A] 11 is a cross-sectional view showing a configuration of a main part of a cable holding portion of a first modified example. FIG. [Figure 7B] 13 is a cross-sectional view showing a configuration of a main part of a cable holding portion of a second modified example. FIG. [Figure 7C]13 is a cross-sectional view showing a configuration of a main part of a cable holding portion of a third modified example. FIG. [Figure 8] FIG. 13 is a diagram showing a schematic configuration of a projection system according to a second embodiment. [Figure 9] FIG. 13 is a diagram showing a schematic configuration of a projection system according to a third embodiment. [Figure 10] FIG. 13 is a diagram showing a schematic configuration of a projection system according to a fourth embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. Note that the drawings used in the following description may show characteristic parts in an enlarged scale for the sake of convenience in order to make the characteristics easier to understand, and the dimensional ratios of each component may not necessarily be the same as in reality.

[0010] (First embodiment) FIG. 1 is a schematic diagram of a projection system 100 according to the present embodiment. As shown in FIG. 1, a projection system 100 of this embodiment includes a screen SCR, a screen frame P, a first projector 2A, a second projector 2B, a cable 1, and two installation units 3.

[0011] The screen SCR of this embodiment is placed on a floor surface T by a screen frame P so as to maintain a cylindrical shape. Note that the floor surface T corresponds to the surface of the floor of a room when the projection system 100 is installed indoors, and corresponds to the surface of the ground when the projection system 100 is installed outdoors.

[0012] The first projector 2A and the second projector 2B are disposed so as to face each other across the screen SCR. That is, the second projector 2B projects image light onto the screen SCR from a direction different from that of the first projector 2A. The first projector 2A and the second projector 2B each project image light L synchronized with each other toward the outer circumferential surface of the screen SCR. In other words, the image light L projected onto the screen SCR by the first projector 2A and the second projector 2B generates one image as a whole.

[0013] The first projector 2A and the second projector 2B are connected via a cable 1 for synchronizing their image lights L. In this embodiment, the cable 1 is, for example, a LAN cable. One end 1a of the cable 1 is connected to the first projector 2A, and the other end 1b of the cable 1 is connected to the second projector 2B.

[0014] Based on such a configuration, the projection system 100 of this embodiment can allow the viewer M inside the screen SCR to view an image displayed over the entire 360-degree periphery.

[0015] The first projector 2A and the second projector 2B are respectively installed in two installation units 3. The cable 1 is stretched between the two installation units 3 so as to straddle above the screen SCR. Therefore, in the projection system 100 of this embodiment, it is not necessary to lay the cable 1 on the floor surface T.

[0016] Next, a description will be given of the configuration of the installation unit 3. Note that the two installation units 3 have the same configuration. In the following, the configuration will be described by taking the installation unit 3 that installs the first projector 2A as an example.

[0017] Hereinafter, the positional relationship of each component may be explained using the XYZ coordinate system shown in the drawings. In each drawing, the X axis is an axis along the direction in which the first projector 2A projects the image light. The Y axis is an axis perpendicular to the X axis and is an axis along the width direction of the screen onto which the image light is projected. The Z axis is an axis perpendicular to the X axis and Y axis and is an axis along the normal and vertical direction of the floor surface T on which the projection system 100 is installed.

[0018] In this embodiment, for example, both directions along the Z axis are collectively referred to as the "vertical direction Z", the direction toward the +Z direction is referred to as the "upper side", and the direction toward the -Z direction is referred to as the "lower side". In addition, both directions along the X axis are collectively referred to as the "front-to-back direction X", the direction toward the +X direction is referred to as the "front side", and the direction toward the -X direction is referred to as the "rear side". In addition, both directions along the Y axis are collectively referred to as the "left-right direction Y", the direction toward the +Y direction is referred to as the "right side", and the direction toward the -Y direction is referred to as the "left side". In this embodiment, the left-right direction Y along the Y axis corresponds to the "first direction", the right side of the left-right direction Y corresponds to the "one side of the first direction", the left side of the left-right direction Y corresponds to the "other side of the first direction", and the Z-axis direction along the vertical direction corresponds to the "second direction". Note that the vertical direction Z, the front-rear direction X, and the left-right direction Y are names merely for explaining the positional relationship of each component of the installation unit 3, and do not specify the actual installation state or installation direction of the installation unit 3.

[0019] FIG. 2 is a perspective view showing a schematic configuration of the installation unit 3. As shown in FIG. 2, the installation unit 3 of this embodiment includes an installation stand 10 and a support device 20. The installation stand 10 includes an installation surface 10a on which the first projector 2A is installed. The support device 20 supports, at the upper side, a cable 1 that has one end 1a connected to the first projector 2A and is routed upward.

[0020] The installation stand 10 has a plurality of support plates 11, a frame section 12 that holds the plurality of support plates 11, and an attachment section 17. Each support plate 11 is made of a plate material having a predetermined strength, and in this embodiment, a wooden board is used. The frame section 12 is made of metal, and has a frame body 12a that holds each support plate 11. The attachment section 17 is a section for removably connecting the support device 20 to the installation stand 10. In this embodiment, the support plates 11 and the frame body 12a are configured so that the outer shape of each support plate 11 and the outer shape of the frame body 12a are flush with each other when viewed in a plan view from the vertical direction Z. By flushing the support plates 11 and the frame body 12a in this way, the appearance of the installation stand 10 can be improved.

[0021] The upper surface of each support plate 11 forms an installation surface on which a projector is installed. The installation stand 10 of this embodiment has five support plates 11 installed in the vertical direction Z. This allows the installation stand 10 of this embodiment to set the installation height of the projector to five different heights depending on the application. In FIG. 2, the first projector 2A is installed on the support plate 11 located at the topmost level in the vertical direction Z. Therefore, in FIG. 2, the upper surface of the support plate 11 located at the topmost level corresponds to the installation surface 10a on which the first projector 2A is installed.

[0022] Next, the configuration of the support device 20 will be described. Fig. 3 is a perspective view showing the configuration of the support device 20. For ease of understanding, Fig. 3 shows a state in which the support device 20 is removed from the installation stand 10. Fig. 4 is a side cross-sectional view showing a state in which the support device 20 is attached to the installation stand 10.

[0023] As shown in FIG. 3, the support device 20 includes a rod-shaped body 20A extending in the vertical direction Z, and a cable holding part 30. The rod-shaped body 20A has a support part 21, a pole part 25, a spacer member 26, a first fixing part 22, and a second fixing part 23. The support part 21 is a columnar member, and is positioned with respect to the installation surface 10a of the first projector 2A by attaching the cable holding part 30 to the installation stand 10. The support part 21 in this embodiment is a cylindrical member, but may be a rectangular prism-shaped member or another polygonal prism-shaped member. The pole part 25 is attached to the upper side of the support part 21, and has a configuration that is expandable and contractible in the vertical direction Z. The spacer member 26 is a resin spacer used to attach the pole part 25 and the cable holding part 30.

[0024] The support device 20 is detachably connected to the installation stand 10. The support portion 21 of the support device 20 is detachably attached to the mounting portion 17 provided on the installation stand 10. Specifically, the support portion 21 is detachably fixed to the mounting portion 17 via a first fixing portion 22 and a second fixing portion 23. That is, the support device 20 of this embodiment has the first fixing portion 22 and the second fixing portion 23 that detachably fix the support portion 21 to the installation stand 10.

[0025] The first fixed portion 22 and the second fixed portion 23 are disposed at different positions on the support portion 21 in the vertical direction Z. Specifically, the first fixed portion 22 is located above the second fixed portion 23 on the support portion 21.

[0026] The first fixing portion 22 is attached so as to be wrapped around the entire outer circumferential surface of the support portion 21, and has a first protrusion 122. Note that the first fixing portion 22 and the outer circumferential surface of the support portion 21 are fixed together by, for example, adhesive.

[0027] The first protrusion 122 includes a pair of butt portions 122b protruding radially from the support portion 21, a bent portion 122a formed by bending the tips of the pair of butt portions 122b at a right angle, and a screw portion 122c that fastens the pair of butt portions 122b together.

[0028] Similarly, second fixing portion 23 is attached so as to be wrapped around the entire outer circumferential surface of support portion 21, and has second protrusion 123. Note that second fixing portion 23 and the outer circumferential surface of support portion 21 are fixed together by, for example, adhesive. The second protrusion 123 includes a pair of butt portions 123b protruding radially from the support portion 21, a bent portion 123a formed by bending the tips of the pair of butt portions 123b at a right angle, and a screw portion 123c that fastens the pair of butt portions 123b together.

[0029] The mounting portion 17 includes a first bracket 15 and a second bracket 16. The first bracket 15 is formed in a plate shape extending in the vertical direction Z, and has a first slit opening 15a and a second slit opening 15b formed along the vertical direction Z. The first slit opening 15a corresponds to the first protrusion 122 of the first fixed portion 22, and the second slit opening 15b corresponds to the second protrusion 123 of the second fixed portion 23.

[0030] The first slit opening 15a and the second slit opening 15b have the same shape. Here, the shape of the first slit opening 15a will be described as an example. The first slit opening 15a is configured by combining a first opening 15a1 and a second opening 15a2 aligned in the vertical direction Z.

[0031] Here, the distance between the first opening 15a1 and the second opening 15a2 in the left-right direction Y is referred to as the opening width, and the height between the first opening 15a1 and the second opening 15a2 in the vertical direction Z is referred to as the opening height. The opening width of the first opening 15a1 is larger than the opening width of the second opening 15a2. The opening width of the first opening 15a1 is equal to or larger than the width of the bent portion 122a of the first protrusion 122 in the left-right direction Y, and the opening height of the first opening is equal to or larger than the height of the bent portion 122a of the first protrusion 122 in the vertical direction Z. Therefore, the first protrusion 122 allows the bent portion 122a to be inserted into the first opening 15a1 in the front-rear direction X.

[0032] The width of the second opening 15a2 connected to the lower side of the first opening 15a1 is smaller than the width of the bent portion 122a of the first protrusion 122 in the left-right direction Y, and is equal to or larger than the width of the pair of butt portions 123b of the first protrusion 122 in the left-right direction Y. Therefore, the first protrusion 122 can be moved into the second opening 15a2 by sliding the first protrusion 122 downward in a state where the first protrusion 122 is inserted into the first opening 15a1. The first protrusion 122 is inserted into the second opening 15a2 in a state where the bent portion 122a is located on the rear side (-X) of the first bracket 15 and the screw portion 122c fastening the pair of butt portions 122b is located on the front side (+X) of the first bracket 15. It is preferable that the gap between the bent portion 122a and the screw portion 122c in the front-back direction X is set to be equal to or slightly larger than the thickness of the first bracket 15.

[0033] The opening height of the second opening 15a2 is equal to or greater than the height of the first protrusion 122 in the vertical direction Z. Therefore, in the state where the first protrusion 122 slides until the lower ends of the pair of butting portions 123b abut against the lower opening end of the second opening 15a2, the entire bent portion 122a is located on the rear side of the second opening 15a2. In this state, the first protrusion 122 is restricted from moving forward relative to the first bracket 15 as the bent portion 122a abuts against the peripheral portion of the second opening 15a2 of the first slit opening 15a. In addition, the first protrusion 122 is restricted from moving backward relative to the first bracket 15 as the screw portion 122c abuts against the peripheral portion of the second opening 15a2 of the first slit opening 15a.

[0034] In this manner, the first fixing part 22 can attach the support part 21 to the installation stand 10 by hooking the first protruding part 122 into the first slit opening 15a of the first bracket 15. Meanwhile, the first fixing part 22 can remove the support part 21 from the installation stand 10 by sliding the first protruding part 122 to the upper end and moving it into the first opening 15a1 of the first slit opening 15a, and then pulling the first protruding part 122 out from the first slit opening 15a to the front side.

[0035] The same can be said about the relationship between the second protrusion 123 and the second slit opening 15b. That is, the bent portion 123a of the second protrusion 123 abuts against the peripheral portion of the second second opening 15a2, thereby restricting the movement of the second protrusion 123 toward the front side relative to the first bracket 15. Also, the screw portion 123c of the second protrusion 123 abuts against the peripheral portion of the second opening 15b2 of the second slit opening 15b, thereby restricting the movement of the second protrusion 123 toward the rear side relative to the first bracket 15.

[0036] Therefore, the second fixing part 23 can attach the support part 21 to the installation stand 10 by hooking the second protruding part 123 into the second slit opening 15b of the first bracket 15. On the other hand, the second fixing part 23 can remove the support part 21 from the installation stand 10 by sliding the second protruding part 123 to the upper end and moving it into the first opening 15a1 of the second slit opening 15b, and then pulling the first protruding part 122 out forward from the second slit opening 15b.

[0037] Based on this configuration, the support device 20 can be easily attached to and detached from the installation base 10 by hooking the first fixing portion 22 and the second fixing portion 23 onto the attachment portion 17 of the installation base 10, as shown in FIG.

[0038] 1, in the projection system 100 of this embodiment, the distance in the vertical direction Z from the installation surface 10a of the first projector 2A to the cable holding unit 30 is greater than the distance from the installation surface 10a to the top surface 101 of the first projector 2A. Also, in the vertical direction Z, the distance from the installation surface 10a to the cable holding unit 30 is greater than the distance from the installation surface 10a to the top surface 102 of the second projector 2B. Here, the top surface 101 of the first projector 2A corresponds to an upper surface of the exterior surface of the first projector 2A that faces the opposite side to the surface that abuts against the installation surface 10a of the installation stand 10. Similarly, the top surface 102 of the second projector 2B corresponds to an upper surface of the exterior surface of the second projector 2B that faces the opposite side to the surface that abuts against the installation surface 10a of the installation stand 10.

[0039] Here, the distance from the installation surface 10a to the cable holding part 30 in the vertical direction Z is defined as a first distance H1, and the distance from the installation surface 10a to the position of the screen SCR that is the furthest from the installation surface 10a, i.e., the upper end TP of the screen SCR, in the vertical direction Z is defined as a second distance H2. In the projection system 100 of this embodiment, the first distance H1 is equal to or greater than the second distance H2.

[0040] In other words, in the projection system 100 of this embodiment, the cable holding part 30 is disposed at a location higher than the installation surface 10a of the projector, more specifically, at a location higher than the upper end TP of the screen SCR. Therefore, in the projection system 100 of this embodiment, the cable 1 that connects the first projector 2A and the second projector 2B can be held by the cable holder 30 above the screen SCR.

[0041] In the projection system 100 of this embodiment, the cable 1 is supported by the support device 20 in the following procedure. First, the pole portion 25 shown in Fig. 3 is shortened to shorten the length of the rod-shaped body 20A, and the cable 1 is held by the cable holding portion 30. Next, the support device 20 holding the cable 1 is attached to the attachment portion 17 of the installation stand 10, and then the pole portion 25 is extended and adjusted to a desired length, thereby setting the cable holding portion 30 at a predetermined height. In this way, according to the support device 20 of this embodiment, the cable holding portion 30 can be set at a desired height without having to work at a height using a stepladder or the like.

[0042] As shown in FIG. 4, when the support device 20 is attached to the attachment portion 17 of the installation table 10, a part of the outer circumferential surface of the support portion 21 abuts against the installation table 10. When the support device 20 is attached to the attachment portion 17 of the installation stand 10, the outer peripheral surface 21a1 of the lower end portion 21a of the support portion 21 abuts against the frame body 12a of the frame portion 12 of the installation stand 10. According to this configuration, by abutting the lower end portion 21a of the support portion 21 against the frame portion 12, rattling of the support portion 21 can be further suppressed.

[0043] FIG. 5 is a perspective view showing the configuration of the attachment portion 17. As shown in FIG. 4 and 5, the mounting portion 17 is fixed to a pair of support plates 11 and the frame portion 12 of the installation stand 10. In the case of this embodiment, as shown in Fig. 2, the mounting portion 17 is fixed to the support plate 110 that is the third stage from the bottom in the vertical direction Z, the support plate 111 that is the fourth stage from the bottom in the vertical direction Z, and a frame body 12a of the frame portion 12 that supports the support plate 111. The first bracket 15 of the attachment portion 17 further has a leg portion 151 provided at a lower end portion in the vertical direction Z and a contact portion 152 provided at an upper end portion in the vertical direction Z.

[0044] As shown in Fig. 5, the leg portion 151 of the first bracket 15 is fixed to the upper surface 110b of the support plate 110 by the screw members 18 shown in Fig. 4. The leg portion 151 has two screw holes 151a for inserting the screw members 18 therethrough.

[0045] The abutment portion 152 of the first bracket 15 abuts against an inner surface 13a of one of the pillar portions 13 constituting the frame body 12a of the frame portion 12 of the installation stand 10. In the case of this embodiment, the pillar portion 13 is a rectangular pillar extending in the left-right direction Y, and the inner surface 13a is a surface that is perpendicular to the support surface 10a and faces rearward in the front-rear direction X. Therefore, the first bracket 15 is disposed perpendicular to the installation surface 10a on which the installation stand 10 is installed.

[0046] The abutment portion 152 has a standing wall 152a that stands on the side opposite to the frame portion 12 (the rear side in the front-rear direction X). The standing wall 152a is formed, for example, by cutting out and bending a part of the abutment portion 152. The standing wall 152a is used for positioning with the second bracket 16 described later.

[0047] The second bracket 16 is an L-shaped part formed by bending a plate material at 90 degrees. The second bracket 16 includes a first plate portion 161 and a second plate portion 162 that are perpendicular to each other. The second plate portion 162 of the second bracket 16 is disposed so as to overlap the abutment portion 152 of the first bracket 15. The second plate portion 162 of the second bracket 16 has a pair of elongated holes 16b. The pair of elongated holes 16b are aligned along the left-right direction Y, and each elongated hole 16b is an elliptical opening having a major axis in the vertical direction Z.

[0048] One of the pair of elongated holes 16b corresponds to the rising wall 152a provided in the abutting portion 152. Specifically, the width of the elongated hole 16b in the left-right direction Y matches the width of the rising wall 152a in the left-right direction Y. Therefore, with the rising wall 152a inserted into the elongated hole 16b of the second plate portion 162, the second bracket 16 becomes slidable in the vertical direction Z while its position in the left-right direction Y relative to the first bracket 15 is restricted.

[0049] With this configuration, the distance in the vertical direction Z between the first plate portion 161 of the second bracket 16 and the leg portion 151 of the first bracket 15 can be adjusted, so that even if, for example, the distance between the upper surface 110b of the support plate 110 and the back surface 111a of the support plate 111 changes due to a change in the thickness of the support plates 110, 111, the mounting portion 17 can be attached properly between the upper surface 110b and the back surface 111a.

[0050] A first plate portion 161 of the second bracket 16 is fixed to a rear surface 111a of a support plate 111 that supports the first projector 2A by screw members 19. The first plate portion 161 has two screw holes 16a for inserting the screw members 19 therethrough.

[0051] The mounting portion 17 is fixed in a state in which the abutment portion 152 of the first bracket 15 abuts against the inner surface 13a of the pillar portion 13 by fixing the second bracket 16 to the rear surface 111a of the support plate 111. In this manner, the mounting portion 17 is in a state in which the second bracket 16 abuts against the back surface 111a of the support plate 111, and the abutment portion 152 of the first bracket 15 held by the second bracket 16 abuts against the inner surface 13a of the column portion 13. Here, the back surface 111a of the support plate 111 and the inner surface 13a of the column portion 13 are surfaces that are perpendicular to each other. In this embodiment, the back surface 111a of the support plate 11 and the inner surface 13a of the column portion 13 correspond to "first and second surfaces of the installation base that are perpendicular to each other."

[0052] In this manner, the mounting portion 17 of this embodiment is fixed to the back surface 111a and the inner surface 13a, which are two mutually perpendicular surfaces of the installation base 10. Therefore, the mounting portion 17 is attached to the installation base 10 in a stable state with little wobble. Therefore, the mounting portion 17 can attach the support device 20 to the installation base 10 in a stable state without wobble.

[0053] Next, a description will be given of the configuration of the cable holding section 30. The cable holding section 30 holds the cable 1 connected to the first projector 2A. FIG.

[0054] As shown in FIG. 6, the cable holding portion 30 has a frame portion 31, a connection portion 32, a rotating body 33, and a shaft portion . The frame 31 has a substantially U-shaped cross section. The frame 31 includes a first extending portion 31A, a second extending portion 31B, and a bottom plate portion 31C. The first extending portion 31A is a plate material located on the right side of the rotating body 33 in the left-right direction Y and extending in the vertical direction Z. The second extending portion 31B is a plate material located on the left side of the rotating body 33 in the left-right direction Y and extending in the vertical direction Z. In the vertical direction Z, the first extending portion 31A and the second extending portion 31B protrude outward from the rotating body 33 on the +Z direction side. The bottom plate portion 31C is a plate material extending in the left-right direction Y and connecting the first extending portion 31A and the second extending portion 31B. The bottom plate portion 31C connects the portions of the first extending portion 31A and the second extending portion 31B that extend downward in the vertical direction Z.

[0055] The cable holding part 30 is attached to a tip part 25a1 of a support pin 25a extending in the vertical direction Z provided at the upper end of the pole part 25. The frame part 31 has the tip part 25a1 of the support pin 25a inserted through an opening 31K provided in the bottom plate part 31C. The spacer member 26 is a spacer that holds the frame portion 31 and the pole portion 25 in a predetermined positional relationship in the vertical direction Z. The spacer member 26 has a through hole 26a through which the support pin 25a is inserted, and a base portion 26b that supports the bottom plate portion 31C and includes a protrusion 26b1 that is inserted into the opening 31K. The tip portion 25a1 of the support pin 25a inserted into the through hole 26a is disposed in the frame portion 31 via the opening 31K, is inserted into the washer 27, and is fixed via a fixing member 28 made of, for example, a push nut.

[0056] The frame portion 31 is fixed to the pole portion 25 with its movement downward in the vertical direction Z restricted by the spacer member 26 and its movement upward in the vertical direction Z restricted by the fixing member 28.

[0057] On the other hand, the frame portion 31 is supported by the support pin 25a and the spacer member 26 so as to be rotatable about a second rotation axis C2. The second rotation axis C2 is a virtual axis that passes through the support pin 25a, and the second rotation axis C2 passes through the center of the support pin 25a.

[0058] The rotor 33 is a disk-shaped member that rotates about a first rotation axis C1. The rotor 33 has a holding surface 33a that holds the cable 1. The holding surface 33a corresponds to the outer circumferential surface of the cylindrical rotor 33. The shaft portion 34 extends along the left-right direction Y and is inserted into a through hole 33b of the rotor 33, and both ends are fixed to the frame portion 31 via bolts 34a. The shaft portion 34 holds the rotor 33 rotatably about the first rotation axis C1. The first rotation axis C1 is a virtual axis that passes through the shaft portion 34, and the first rotation axis C1 passes through the center of the shaft portion 34.

[0059] According to the cable holding part 30 of the present embodiment, for example, when installing the cable 1, pulling the cable 1 arranged on the rotating body 33 causes the rotating body 33 to rotate, and this reduces the load such as twisting and rubbing on the cable 1. This makes it possible to suppress the occurrence of defects such as deformation and breakage of the cable 1. Furthermore, since the frame portion 31 is rotatable about the second rotation axis C2, the direction in which the cable 1 is pulled out by the cable holding portion 30 can be adjusted to various directions.

[0060] In the cable holding part 30 of the present embodiment, the first extension part 31A and the second extension part 31B protrude above the rotating body 33. This makes it possible to prevent the cable 1 arranged on the holding surface 33a of the rotating body 33 from moving in the left-right direction Y and coming off the holding surface 33a.

[0061] In the cable holding part 30 of this embodiment, the portions of the first extension part 31A and the second extension part 31B that protrude upward in the vertical direction Z are connected by a connection part 32. The connection part 32 is disposed so as to be sandwiched between the first extension part 31A and the second extension part 31B, and connects the first extension part 31A and the second extension part 31B via a bolt 32a.

[0062] In the cable holding part 30 of the present embodiment, the cable 1 is surrounded by the connection part 32, the first extension part 31A, the second extension part 31B, and the rotating body 33. According to this configuration, the cable holding part 30 can stably hold the cable 1 without causing it to fall off.

[0063] As described above, the projection system 100 of this embodiment includes the first projector 2A that projects the image light L onto the screen SCR, the second projector 2B that projects the image light L onto the screen SCR from a direction different from that of the first projector 2A, and the support device 20. The support device 20 includes a cable holding unit 30 that holds the cable 1 connected to the first projector 2A and the second projector 2B, and a support unit 21 that positions the cable holding unit 30 with respect to the installation surface 10a of the first projector 2A or the second projector 2B. On the upper side in the vertical direction Z, the distance from the installation surface 10a to the cable holding unit 30 is greater than the distance from the installation surface 10a to the top surface 101 of the first projector 2A or the top surface 102 of the second projector 2B. Furthermore, in the projection system 100 of this embodiment, the first distance H1 from the installation surface 10a to the cable holding part 30 is equal to or greater than the second distance H2 from the installation surface 10a to the upper end TP of the screen SCR.

[0064] According to the projection system 100 of this embodiment, the cable holding section 30 of the support device 20 is positioned at a location higher than the installation surface 10a of the first projector 2A or the second projector 2B, so that the cable 1 connecting between the first projector 2A and the second projector 2B can be held above the screen SCR. Therefore, the projection system 100 of this embodiment can prevent the cable 1 from coming into contact with the installation surface 10a of the installation stand 10 or the floor surface T on which the installation stand 10 is placed. This makes it possible to prevent the viewer of the image from getting caught on the cable 1 routed on the floor surface T. Furthermore, when the projection system 100 is used outdoors, it is possible that moisture or the like may be attached to the floor surface T. Even in such a situation, the cable 1 is not placed on the floor surface T, so that it is possible to prevent problems such as an electric leak through the cable 1 due to moisture attached to the floor surface T.

[0065] The installation unit 3 of this embodiment is an installation unit on which a first projector 2A, which is connected to the cable 1 and projects image light L, is installed, and includes an installation stand 10 including an installation surface 10a on which the first projector 2A is installed, and a support device 20 connected to the installation stand 10 and supporting the cable 1. The support device 20 has a cable holding section 30 that holds the cable 1, and a support section 21 that positions the cable holding section 30 with respect to the installation surface 10a. In the vertical direction Z, the distance from the installation surface 10a to the cable holding section 30 is greater than the distance from the installation surface 10a to the top surface 101 of the first projector 2A.

[0066] According to the installation unit 3 of this embodiment, the cable holding section 30 is disposed at a position higher than the installation surface 10a of the first projector 2A, and therefore it is possible to prevent the cable 1 connected to the first projector 2A from contacting the installation surface 10a of the installation stand 10 or the floor surface T on which the installation stand 10 is placed. Furthermore, even if moisture or the like adheres to the floor surface T on which the installation stand 10 is placed, the installation unit 3 of this embodiment can prevent the occurrence of problems such as electric leakage through the cable 1 from the moisture adhering to the floor surface T.

[0067] Moreover, the support device 20 of this embodiment is a support device 20 used in a projection system 100 including a first projector 2A that projects image light L onto a screen SCR, and includes a cable holding unit 30 that holds a cable 1 connected to the first projector 2A, and a support unit 21 that positions the cable holding unit 30 with respect to an installation surface 10a of the first projector 2A. In the vertical direction Z, the distance from the installation surface 10a to the cable holding unit 30 is greater than the distance from the installation surface 10a to a top surface 101 of the first projector 2A.

[0068] According to the support device 20 of this embodiment, the cable holding section 30 is disposed at a position higher than the installation surface 10a of the first projector 2A, and therefore it is possible to prevent the cable 1 connected to the first projector 2A from contacting the installation surface 10a of the installation stand 10 or the floor surface T on which the installation stand 10 is placed. Furthermore, even if moisture or the like adheres to the floor surface T on which the installation stand 10 is placed, the support device 20 of this embodiment can prevent the occurrence of problems such as electric leakage through the cable 1 from the moisture adhering to the floor surface T.

[0069] (First Modification) Next, a first modified example of the projection system 100 of the first embodiment will be described. The difference between this modified example and the projection system 100 is the configuration of the cable holding part of the support device, and the rest is the same. Therefore, the following describes the configuration of the cable holding part, and the description of the other configurations will be omitted.

[0070] Fig. 7A is a cross-sectional view showing the main configuration of the cable holding part of this modified example, in which members not used in the description are omitted or simplified. As shown in FIG. 7A, a cable holder 30A of this modification has a frame portion 31, a connection portion 32, a rotating body 133, and a shaft portion . The rotating body 133 has a holding surface 133a that holds the cable 1. In the present modified example, the holding surface 133a of the rotating body 133 has a recess 134 recessed toward the shaft portion 34 in a cross-sectional view taken along a YZ plane including the left-right direction Y and the vertical direction Z. The recess 134 is provided continuously over the entire circumferential direction of the outer circumferential surface of the rotating body 133. In the case of this modification, the entire holding surface 133a is formed by the recess 134. The surface of the recess 134 is a curved surface having a curvature toward the first rotation axis C1 of the rotating body 133. The cross-sectional shape of the cable 1 is circular.

[0071] According to the cable holding part 30A of this modification, the cable 1 having a circular cross-sectional shape is stably held along the surface of the recess 134 formed of a curved surface. Therefore, even when the rotating body 133 rotates, it is possible to suppress the cable 1 from shaking in the left-right direction Y along the shaft part 34. Therefore, it is possible to suppress the occurrence of friction caused by contact between the cable 1 and the frame part 31.

[0072] (Second Modification) Next, a second modified example of the projection system 100 of the first embodiment will be described. The difference between this modified example and the projection system 100 is the configuration of the cable holding part of the support device, and the rest is the same. Therefore, the following describes the configuration of the cable holding part, and the description of the other configurations will be omitted.

[0073] Fig. 7B is a cross-sectional view showing the main configuration of the cable holding part of this modified example, in which members not used in the description are omitted or simplified. As shown in FIG. 7B, a cable holder 30B of this modified example has a frame portion 31, a connection portion 32, a rotating body 233, and a shaft portion . The rotating body 233 has a holding surface 233a that holds the cable 1. In the present modification, the holding surface 233a of the rotating body 233 has a recess 234 recessed toward the shaft portion 34 in a cross-sectional view of a YZ plane including the left-right direction Y and the vertical direction Z. In the present modification, the holding surface 233a is entirely constituted by the recess 234. The recess 234 has a V-groove-like cross-sectional shape. In other words, the recess 234 is provided continuously over the entire circumferential direction of the outer circumferential surface of the rotating body 233.

[0074] According to the cable holding portion 30B of this modification, the cable 1 is stably held in the recess 234, so that even when the rotating body 233 rotates, it is possible to suppress the cable 1 from shaking in the left-right direction Y along the shaft portion 34. In the case of this modification, the recess 234 has a V-groove shape, so that it is easier to restrict the cable 1 from shaking in the left-right direction Y. Therefore, the cable 1 is less likely to come into contact with the frame portion 31.

[0075] (Third Modification) Next, a third modified example of the projection system 100 of the first embodiment will be described. The difference between this modified example and the projection system 100 is the configuration of the cable holding part of the support device, and the rest is the same. Therefore, the following describes the configuration of the cable holding part, and the description of the other configurations will be omitted.

[0076] Fig. 7C is a cross-sectional view showing the main configuration of the cable holding part of this modified example, in which members not used in the description are omitted or simplified. As shown in FIG. 7C, a cable holder 30C of this modified example has a frame portion 31, a connection portion 32, a rotating body 333, and a shaft portion . The rotating body 333 has a holding surface 333a that holds the cable 1. In the case of this modification, the holding surface 333a of the rotating body 333 has two recesses 334 recessed toward the shaft portion 34 in a cross-sectional view of a YZ plane including the left-right direction Y and the vertical direction Z. Each recess 334 has a V-groove-like cross-sectional shape. That is, the difference between this modification and the second modification is that the rotating body has multiple recesses.

[0077] According to the cable holding part 30C of this modification, the two cables 1 can be stably held in the two recesses 334, respectively. That is, according to the cable holding part 30C of this modification, the two cables 1 can be held by one cable holding part 30C. In this modified example, the case where two recesses 334 are provided has been taken as an example, but three or more recesses 334 may be provided in accordance with the number of cables 1.

[0078] Second embodiment Next, a projection system according to the second embodiment will be described. In the following, the same reference numerals will be used for the configurations common to the projection system 100 according to the first embodiment, and some of the descriptions will be simplified or omitted.

[0079] FIG. 8 is a diagram showing a schematic configuration of a projection system 1B of this embodiment. As shown in FIG. 8, a projection system 1B of this embodiment includes a cylindrical screen SCR, a screen frame P, a first projector 2A, a second projector 2B, a cable 201, an installation stand 210, and a support device 200.

[0080] The installation stand 210 includes an installation surface 210a on which the first projector 2A and the second projector 2B are installed. The first projector 2A and the second projector 2B are disposed so as to face opposite directions from each other inside the screen SCR. That is, the second projector 2B projects image light onto the inside of the screen SCR from a direction different from that of the first projector 2A. The first projector 2A and the second projector 2B each project image light synchronized with each other toward the inner peripheral surface of the screen SCR. Based on such a configuration, the projection system 1B of this embodiment can allow the viewer M outside the screen SCR to view an image displayed over the entire 360-degree periphery.

[0081] The support device 200 supports, on the upper side, two cables 201, one end of which is connected to the first projector 2A and the second projector 2B. In this embodiment, the cable 201 is, for example, a power cable, and the other end of the cable 201 is connected to a power supply device (not shown) outside the screen SCR.

[0082] The support device 200 has a cable holding part 230 having a structure similar to that of the cable holding part 30 of the first embodiment, and a support part 221 that positions the cable holding part 230 with respect to the installation surface 210a. The support part 221 is a substantially L-shaped pillar that is disposed from the outside to the inside of the screen SCR and supports the cable holding part 230 at its tip.

[0083] In projection system 1B of this embodiment, the distance in the vertical direction Z from installation surface 210a of the first projector 2A and the second projector 2B to cable holding unit 230 is greater than the distance from installation surface 210a to top surface 101 of the first projector 2A and top surface 102 of the second projector 2B. For this reason, projection system 1B of this embodiment holds cable 1 connecting between the first projector 2A and the second projector 2B above the screen SCR by cable holding unit 30.

[0084] According to the projection system 1B of this embodiment, it is possible to prevent the cable 201 from coming into contact with the installation surface 210a of the installation stand 210 or the floor surface T on which the installation stand 210 is installed. This makes it possible to prevent the occurrence of problems such as a viewer of an image getting caught on the cable 201 routed on the floor surface T. Even when the projection system 1B is used outdoors, for example, it is possible to prevent the occurrence of problems such as an electric leak through the cable 201 due to moisture adhering to the floor surface T, since the cable 201 is not placed on the floor surface T.

[0085] Third embodiment Next, a projection system according to a third embodiment will be described. In the following, the same reference numerals will be used to designate the same components as those in the projection system 100 according to the first embodiment, and some of the descriptions will be simplified or omitted.

[0086] FIG. 9 is a diagram showing a schematic configuration of a projection system 1C of this embodiment. As shown in FIG. 9, a projection system 1C of this embodiment includes a rectangular screen SCR, a screen frame P, a first projector 2A, a second projector 2B, a cable 1, and two installation units 303 and 304.

[0087] The first projector 2A and the second projector 2B project synchronized image light toward the screen SCR from different positions on the front side of the screen SCR.

[0088] The first projector 2A and the second projector 2B are installed in two installation units 303 and 304, respectively. The installation unit 303 on which the first projector 2A is installed includes an installation stand 310 and a support device 320. The installation stand 310 includes an installation surface 310a on which the first projector 2A is installed. The support device 320 has a cable holding part 330 having a structure similar to that of the cable holding part 30 of the first embodiment, and a support part 321 that positions the cable holding part 330 with respect to the installation surface 310a. The support part 321 is a substantially L-shaped pillar that extends upward from the installation stand 310, then bends towards the second projector 2B side, and supports the cable holding part 330 at its tip.

[0089] The installation unit 304 for installing the second projector 2A has the same configuration as the installation unit 303. The installation unit 304 includes an installation stand 310 and a support device 320. The support device 320 includes a cable holding section 330 and a support section 321. In the installation unit 304, the support section 321, which is made of a substantially L-shaped support, extends upward from the installation stand 310, then bends toward the first projector 2A side, and supports the cable holding section 330 at its tip. The installation units 303 and 304 are arranged side by side in a direction along the width direction of the screen SCR so that the tips of the support sections 321 face each other.

[0090] In projection system 1C of this embodiment, the distance in the vertical direction Z from installation surface 310a of the first projector 2A and the second projector 2B to the cable holding unit 330 is greater than the distance from the installation surface 310a to the top surface 101 of the first projector 2A and the top surface 102 of the second projector 2B. For this reason, in projection system 1C of this embodiment, cable 1 connecting between the first projector 2A and the second projector 2B is held above the installation surface 310a by the cable holding unit 330.

[0091] According to the projection system 1C of this embodiment, it is possible to prevent the cable 1 from coming into contact with the installation surface 310a of the installation stand 310 or the floor surface T on which the installation stand 310 is installed. This makes it possible to prevent the occurrence of problems such as a viewer of an image getting caught on the cable 1 routed on the floor surface T. Even when the projection system 1C is used outdoors, for example, it is possible to prevent the occurrence of problems such as an electric leak through the cable 1 due to moisture adhering to the floor surface T, since the cable 1 is not placed on the floor surface T.

[0092] In this embodiment, the support device 320 may hold the cable 1 above the screen SCR. Also, the support parts 321 of the installation units 303 and 304 may be integrated together.

[0093] (Fourth embodiment) Next, a projection system according to a fourth embodiment will be described. In the following, the same reference numerals will be used to designate the same components as those in the projection system 100 according to the first embodiment, and some of the descriptions will be simplified or omitted.

[0094] FIG. 10 is a diagram showing a schematic configuration of a projection system 1D of this embodiment. As shown in FIG. 10, the projection system 1D of this embodiment includes a rectangular screen SCR, a screen frame P, a first projector 2A, a cable 401, a first installation stand 410, a pair of support devices 420, a second installation stand 411, and a battery device 440.

[0095] The projection system 1D of this embodiment is used outdoors, and therefore, for example, there is a water place 5 such as a pond in the vicinity.

[0096] The first installation stand 410 includes an installation surface 410a on which the first projector 2A is installed. The second installation stand 411 includes an installation surface 411a on which the battery device 440 is installed. The cable 401 in this embodiment is, for example, a power cable, one end of which is connected to the first projector 2A and the other end of which is connected to the battery device 440. This allows the first projector 2A to operate outdoors using power supplied from the battery device 440. As the battery device 440, for example, a portable mobile battery, a portable power source, or an electric car may be used as the power source.

[0097] The pair of support devices 420 includes a cable holding part 430 having a structure similar to that of the cable holding part 30 of the first embodiment, and a support part 421 that positions the cable holding part 430 with respect to the installation surface 410a. The support part 421 is a pillar extending in the vertical direction Z, and supports the cable holding part 430 at its tip.

[0098] In the projection system 1D of this embodiment, the distance from the installation surface 410a of the first projector 2A to the cable holding unit 430 in the vertical direction Z is greater than the distance from the installation surface 410a to the top surface 101 of the first projector 2A. For this reason, in the projection system 1D of this embodiment, the cable 401, one end of which is connected to the first projector 2A and the other end of which is connected to the battery device 440, is held above the installation surfaces 410a, 411a by the cable holding unit 430.

[0099] According to the projection system 1D of this embodiment, it is possible to prevent the cable 401 from coming into contact with the installation surface 410a of the first installation stand 410 or the floor surface T on which the first installation stand 410 is installed. This makes it possible to prevent the occurrence of a problem in which a viewer of an image gets caught on the cable 401 routed on the floor surface T. Furthermore, since the projection system 1D of this embodiment is used outdoors where there is a water area 5, moisture from the water area 5 may adhere to the floor surface T. In contrast, in the projection system 1D of this embodiment, since the cable 401 is not placed on the floor surface T, it is possible to prevent the occurrence of a problem in which moisture adhering to the floor surface T causes an electric leak via the cable 401.

[0100] In this embodiment, the support device 420 may hold the cable 401 above the screen SCR.

[0101] The technical scope of the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the spirit of the present invention. In addition, one aspect of the present invention can be a configuration in which the characteristic portions of the above-described embodiments are appropriately combined.

[0102] In the above embodiment and modified example, the first projector 2A or the second projector 2B is installed on a mounting stand, but the first projector 2A or the second projector 2B may be used in a state where it is installed directly on a floor surface. In this case, the installation surface of the projector is the floor surface.

[0103] Furthermore, in the above embodiment and modified examples, an example has been given in which two or less projectors are used to project an image onto the screen SCR, but three or more projectors may be used to project an image onto the screen.

[0104] Furthermore, in the above embodiment and modified examples, the two projectors project image light synchronized with each other onto the screen SCR, but the two projectors may project different image light onto the screen SCR.

[0105] [Summary of this disclosure] The following is a summary of this disclosure.

[0106] (Appendix 1) A projection system including a first projector that projects image light onto a screen and a support device, The support device includes: a cable holder that holds a cable having one end connected to the first projector; a support portion that positions the cable holding portion with respect to an installation surface of the first projector, On the upper side in the vertical direction, the distance from the installation surface to the cable holding part is greater than the distance from the installation surface to the top surface of the first projector. Projection system.

[0107] According to the configuration of Supplementary Note 1, since the cable holder is disposed at a position higher than the installation surface of the first projector, the cable can be held above the installation surface. Therefore, it is possible to prevent the cable from coming into contact with the installation surface or the floor surface on which the present system is installed. This makes it possible to prevent problems such as viewers of images getting caught on the cable routed on the floor surface. In addition, even if moisture or the like adheres to the floor surface when the projection system is used outdoors, the cable is not disposed on the floor surface, so that it is possible to prevent problems such as an electric leak caused by moisture adhering to the floor surface through the cable.

[0108] (Appendix 2) When a distance from the installation surface to the cable holding part on the upper side in the vertical direction is defined as a first distance, and a distance from the installation surface to a position on the screen farthest from the installation surface on the upper side in the vertical direction is defined as a second distance, The first distance is greater than or equal to the second distance. 2. The projection system of claim 1.

[0109] According to the configuration of Supplementary Note 2, the cable connected to the first projector can be held above the screen, thereby preventing the cable from coming into contact with the floor.

[0110] (Appendix 3) a mounting table including the mounting surface on which the first projector is mounted, The support portion is connected to the installation base. 3. The projection system of claim 1 or 2.

[0111] According to the configuration of Supplementary Note 3, since the support part is connected to the installation base including the installation surface, it becomes easy to construct the environment of the projection system.

[0112] (Appendix 4) the cable holding portion has a shaft portion extending along a first direction intersecting the vertical direction, a rotating body rotating about a first rotation axis passing through the shaft portion, and a frame portion connected to the shaft portion, the frame portion includes a first extension portion located on one side of the rotating body in the first direction and a second extension portion located on the other side of the rotating body in the first direction, In a second direction along the vertical direction, the first extension portion and the second extension portion protrude beyond the rotating body. 3. The projection system of claim 1 or 2.

[0113] According to the configuration of Supplementary Note 4, since the rotating body rotates with the movement of the cable, it is possible to reduce loads such as twisting and rubbing on the cable. This makes it possible to suppress the occurrence of defects such as deformation and breakage of the cable. In addition, the protruding portions of the first extension part and the second extension part can restrict the movement of the cable in the second direction.

[0114] (Appendix 5) the frame portion further includes a connection portion that connects the first extension portion and the second extension portion, The cable is surrounded by the connection portion, the first extension portion, the second extension portion, and the rotating body. 5. The projection system of claim 4.

[0115] According to the configuration of Supplementary Note 5, the cable holding portion can hold the cable in a stable state without causing the cable to fall off.

[0116] (Appendix 6) The rotating body has a holding surface that holds the cable, The holding surface has a recess recessed toward the shaft portion in a cross-sectional view of a plane including the first direction and the second direction. 6. The projection system of claim 4 or 5.

[0117] According to the configuration of Supplementary Note 6, the cable is stably held in the recessed portion, and therefore, even if the rotating body rotates, the cable is unlikely to come off the rotating body.

[0118] (Appendix 7) The surface of the recess is a curved surface having a curvature toward the first rotation axis of the rotating body. 7. The projection system of claim 6.

[0119] According to the configuration of Supplementary Note 7, for example, a cable having a circular cross section is stably held along the surface of the recess formed of a curved surface. Therefore, even when the rotating body rotates, the cable can be prevented from shaking in the second direction along the shaft portion.

[0120] (Appendix 8) The rotating body has a plurality of the recesses. 8. The projection system of claim 6 or 7.

[0121] According to the configuration of appendix 8, a plurality of cables can be held in a plurality of recesses.

[0122] (Appendix 9) The support device further includes a first fixing part and a second fixing part that detachably fix the support part to the installation base. 9. The projection system according to any one of claims 3 to 8.

[0123] According to the configuration of Supplementary Note 9, since the support part is fixed to the installation base at two locations, the first fixing part and the second fixing part, the support part can be stably fixed to the installation base.

[0124] (Appendix 10) The installation base further includes an attachment portion for attaching the first fixing portion and the second fixing portion, The mounting portion is fixed to a first surface and a second surface of the installation base that are perpendicular to each other. 10. The projection system of claim 9.

[0125] According to the configuration of Supplementary Note 10, the mounting portion is attached to the installation base in a stable state with little wobble. Therefore, the mounting portion can attach the support device to the installation base in a stable state without wobble.

[0126] (Appendix 11) The first fixing portion has a first protrusion, The second fixing portion has a second protrusion, The attachment portion further includes a first slit opening for hooking the first protruding portion and a second slit opening for hooking the second protruding portion. 11. The projection system of claim 10.

[0127] According to the configuration of Supplementary Note 11, by hooking the first fixing part and the second fixing part into the slit opening of the attachment part of the installation stand, the support device can be easily attached to and detached from the installation stand.

[0128] (Appendix 12) The cable holding portion rotates about a second rotation axis perpendicular to the first rotation axis. 9. The projection system according to any one of claims 4 to 8.

[0129] According to the configuration of Supplementary Note 12, the cable holding portion rotates about the second rotation shaft, so that the direction in which the cable is pulled out by the cable holding portion can be adjusted to various directions.

[0130] (Appendix 13) The support portion is a columnar member, A part of the outer circumferential surface of the support portion is in contact with the installation base. 12. The projection system according to any one of claims 3 to 11.

[0131] According to the configuration of Supplementary Note 13, by abutting a part of the outer circumferential surface of the support portion against the installation base, wobbling of the support portion can be further suppressed.

[0132] (Appendix 14) a second projector that projects image light onto the screen from a direction different from that of the first projector; the other end of the cable connected to the first projector is connected to the second projector; 14. The projection system according to any one of claims 1 to 13.

[0133] According to the configuration of Supplementary Note 14, a system can be provided that displays more complex and attractive images by displaying images projected from two projectors.

[0134] (Appendix 15) An installation unit to which a cable is connected and in which a projector that projects image light is installed, an installation stand including an installation surface on which the projector is installed; a support device connected to the installation base and supporting the cable, the support device includes a cable holding portion that holds the cable, and a support portion that positions the cable holding portion with respect to the installation surface, On the upper side in the vertical direction, the distance from the installation surface to the cable holding part is greater than the distance from the installation surface to the top surface of the projector. Installation unit.

[0135] According to the configuration of Supplementary Note 15, since the cable holder is disposed at a position higher than the installation surface of the projector, the cable can be held above the installation surface. Therefore, it is possible to prevent the cable from coming into contact with the installation surface or the floor surface on which the installation unit is installed. This makes it possible to prevent problems such as viewers of images getting caught on the cable routed on the floor surface. In addition, even if moisture or the like adheres to the floor surface when the projection system is used outdoors, the cable is not disposed on the floor surface, so it is possible to prevent problems such as electric leakage through the cable due to moisture adhering to the floor surface.

[0136] (Appendix 16) A support device for use in a projection system including a projector that projects image light onto a screen, comprising: the support device includes a cable holder that holds a cable having one end connected to the projector; a support portion that positions the cable holding portion with respect to an installation surface of the projector, On the upper side in the vertical direction, the distance from the installation surface to the cable holding part is greater than the distance from the installation surface to the top surface of the projector. Support device.

[0137] According to the configuration of Supplementary Note 16, the cable holder is disposed at a position higher than the installation surface of the projector, so that the cable can be held above the installation surface. This can prevent the cable from coming into contact with the installation surface or the floor surface on which the projection system is installed. This can prevent the viewer of the image from getting caught in the cable routed on the floor surface. In addition, even if moisture or the like adheres to the floor surface when the projection system is used outdoors, the cable is not disposed on the floor surface, so that it can prevent the occurrence of a malfunction such as an electric leak through the cable due to moisture adhering to the floor surface. [Explanation of symbols]

[0138] 1,201,401...cable, 1a...(one end of cable), 1b...(other end of cable), 1B,1C,1D,100...projection system, 2A...first projector, 2B...second projector, 3,303,304...installation unit, 10,210,310...installation stand, 10a,210a,310a,410a...installation surface, 15a...first slit opening, 15b...second slit opening, 17...mounting portion, 20,200,320,420...support device, 21,221,321,421...support portion, 22...first fixing portion, 23...second fixing portion, 30,30A,3 0B, 30C, 230, 330, 430...cable holding portion, 31...frame portion, 31A...first extension portion, 31B...second extension portion, 32...connection portion, 33, 133, 233, 333...rotating body, 33a, 133a, 233a, 333a...holding surface, 34...shaft portion, 101...top surface (of first projector), 102...top surface (of second projector), 122...first protrusion portion, 123...second protrusion portion, 134, 234, 334...recess portion, 21a1...outer surface, C1...first rotation axis, C2...second rotation axis, H1...first distance, H2...second distance, L...image light, SCR...screen, Z...vertical direction.

Claims

1. A projection system including a first projector that projects image light onto a screen and a support device, The support device includes: a cable holder for holding a cable having one end connected to the first projector; a support portion that positions the cable holding portion with respect to an installation surface of the first projector, On the upper side in the vertical direction, the distance from the installation surface to the cable holding part is greater than the distance from the installation surface to the top surface of the first projector. Projection system.

2. When a distance from the installation surface to the cable holding part on the upper side in the vertical direction is a first distance, and a distance from the installation surface to a position on the screen farthest from the installation surface on the upper side in the vertical direction is a second distance, the first distance is greater than or equal to the second distance; The projection system according to claim 1 .

3. a mounting table including the mounting surface on which the first projector is mounted, The support portion is connected to the installation base.

3. The projection system according to claim 1 or 2.

4. the cable holding portion has a shaft portion extending along a first direction intersecting the vertical direction, a rotating body rotating about a first rotation axis passing through the shaft portion, and a frame portion connected to the shaft portion, the frame portion includes a first extension portion located on one side of the rotating body in the first direction and a second extension portion located on the other side of the rotating body in the first direction, In a second direction along the vertical direction, the first extension portion and the second extension portion protrude beyond the rotating body. The projection system according to claim 1 .

5. the frame portion further includes a connection portion that connects the first extension portion and the second extension portion, The cable is surrounded by the connection portion, the first extension portion, the second extension portion, and the rotating body. The projection system according to claim 4 .

6. The rotating body has a holding surface that holds the cable, The holding surface has a recess that is recessed toward the shaft portion in a cross-sectional view of a plane including the first direction and the second direction. The projection system according to claim 4 .

7. The surface of the recess is a curved surface having a curvature toward the first rotation axis of the rotating body. The projection system according to claim 6 .

8. The rotating body has a plurality of the recesses.

8. The projection system according to claim 6 or 7.

9. The support device further includes a first fixing portion and a second fixing portion that detachably fix the support portion to the installation base. The projection system according to claim 3 .

10. The installation base further includes an attachment portion for attaching the first fixing portion and the second fixing portion, The mounting portion is fixed to a first surface and a second surface of the installation base that are perpendicular to each other. The projection system according to claim 9 .

11. The first fixing portion has a first protrusion, The second fixing portion has a second protruding portion, The attachment portion further includes a first slit opening for hooking the first protruding portion and a second slit opening for hooking the second protruding portion. The projection system according to claim 10.

12. The cable holding portion rotates about a second rotation axis perpendicular to the first rotation axis. The projection system according to claim 4 .

13. The support portion is a columnar member, A part of the outer circumferential surface of the support portion is in contact with the installation base. The projection system according to claim 3 .

14. a second projector that projects image light onto the screen from a direction different from that of the first projector; the other end of the cable connected to the first projector is connected to the second projector; 3. The projection system according to claim 1 or 2.

15. An installation unit to which a cable is connected and in which a projector that projects image light is installed, an installation stand including an installation surface on which the projector is installed; a support device connected to the installation base and supporting the cable, the support device includes a cable holding portion that holds the cable, and a support portion that positions the cable holding portion with respect to the installation surface, On the upper side in the vertical direction, the distance from the installation surface to the cable holding part is greater than the distance from the installation surface to the top surface of the projector. Installation unit.

16. A support device for use in a projection system including a projector that projects image light onto a screen, comprising: the support device includes a cable holder that holds a cable having one end connected to the projector; a support portion that positions the cable holding portion with respect to an installation surface of the projector, On the upper side in the vertical direction, the distance from the installation surface to the cable holding part is greater than the distance from the installation surface to the top surface of the projector. Support device.

Images