Projection system, setting unit and support device

Abstract

The utility model provides a projection system, a setting unit, and a support device, which can restrain bad conditions caused by cables laid on the ground. The projection system provided by the utility model is provided with a supporting device and a first projector for projecting image light to a screen, and the supporting device is provided with a cable holding part for holding a cable of which one end is connected with the first projector; and a support portion that positions the cable holding portion with respect to an installation surface of the first projector, the distance from the installation surface to the holding portion being greater than the distance from the installation surface to the top surface of the first projector on the upper side in the vertical direction.

Description

Technical Field

[0001] The utility model relates to a projection system, a setting unit and a supporting device. Background Art

[0002] Patent Document 1 listed below discloses a system in which a projector is housed in a box disposed outside a building and an image is projected from the projector onto a screen.

[0003] Patent Document 1: Japanese Patent Application Publication No. 2021-188491 Utility Model Content

[0004] In the above system, since the projector is placed in a water environment such as a bathroom, there is a possibility that electricity may leak from moisture attached to the floor through the power cable or LAN cable, or that viewers of the projected image may trip over cables laid on the floor.

[0005] In order to solve the above-mentioned problems, a projection system of one embodiment of the present invention is characterized in that the projection system has a supporting device and a first projector that projects image light onto a screen, and the supporting device has: a cable holding portion that holds a cable connected to the first projector at one end; and a supporting portion that positions the cable holding portion relative to a setting surface of the first projector, and in the upper side in the vertical direction, the distance from the setting surface to the cable holding portion is greater than the distance from the setting surface to the top surface of the first projector.

[0006] Another embodiment of the setting unit of the present invention is characterized in that the setting unit sets a projector, which is connected to a cable and projects image light, and the setting unit has: a setting table, which includes a setting surface for setting the projector; and a supporting device, which is connected to the setting table and supports the cable, and the supporting device has: a cable holding portion, which holds the cable; and a supporting portion, which positions the cable holding portion relative to the setting surface, and in the upper side in the vertical direction, the distance from the setting surface to the cable holding portion is greater than the distance from the setting surface to the top surface of the projector.

[0007] Another embodiment of the support device of the present invention is characterized in that the support device is used for a projection system having a projector for projecting image light onto a screen, and the support device comprises: a cable holding portion for holding a cable connected to the projector at one end; and a support portion for positioning the cable holding portion relative to a setting surface of the projector, wherein the distance from the setting surface to the cable holding portion is greater than the distance from the setting surface to the top surface of the projector on the upper side in the vertical direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1It is a schematic structural diagram of a projection system according to an embodiment.

[0009] Figure 2 It is a perspective view showing a schematic structure of a setting unit.

[0010] Figure 3 It is a perspective view showing the structure of the support device.

[0011] Figure 4 It is a side sectional view showing a state where the supporting device is mounted on the installation table.

[0012] Figure 5 It is a perspective view showing the structure of the mounting portion 17 .

[0013] Figure 6 It is a cross-sectional view showing the main structure of the cable holding portion.

[0014] Fig. 7A It is a cross-sectional view showing the main structure of the cable holding portion according to the first modified example.

[0015] Figure 7B It is a cross-sectional view showing the main structure of a cable holding portion according to a second modified example.

[0016] Figure 7C It is a cross-sectional view showing the main structure of a cable holding portion according to a third modified example.

[0017] Figure 8 It is a diagram showing a schematic configuration of a projection system according to a second embodiment.

[0018] Fig. 9 It is a diagram showing a schematic configuration of a projection system according to a third embodiment.

[0019] Fig.10 It is a diagram showing a schematic configuration of a projection system according to a fourth embodiment.

[0020] Description of symbols

[0021] 1, 201, 401: cable; 1a: one end (of the cable); 1b: the other end (of the cable); 1B, 1C, 1D, 100: projection system; 2A: first projector; 2B: second projector; 3, 303, 304: installation unit; 10, 210, 310: installation table; 10a, 210a, 310a, 410a: installation surface; 15a: first slit opening; 15b: second slit opening; 17: mounting portion; 20, 200, 320, 420: supporting device; 21, 221, 321, 421: supporting portion; 22: first fixing portion; 23: second fixing portion; 30, 30A, 30B, 30C, 230, 330, 430: cable holding portion; 31: frame portion; 31A: first extension portion; 31B: second extension portion; 32: connecting portion; 33, 133, 233, 333: rotating body; 33a, 133a, 233a, 333a: holding surface; 34: shaft portion; 101: top surface (of the first projector); 102: top surface (of the second projector); 122: first protrusion; 123: second protrusion; 134, 234, 334: recessed portion; 21a: outer peripheral surface; C1: first rotation axis; C2: second rotation axis; H1: first distance; H2: second distance; L: image light; SCR: screen; Z: vertical direction. DETAILED DESCRIPTION

[0022] Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings. In addition, in the drawings used in the following description, in order to facilitate understanding of features, sometimes the features are partially enlarged for convenience, and the dimensional ratios of the components are not necessarily the same as the actual ones.

[0023] (First embodiment)

[0024] Figure 1 2 is a schematic diagram of the configuration of the projection system 100 according to the present embodiment.

[0025] like Figure 1 As shown, the projection system 100 of the present 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 .

[0026] The screen SCR of this embodiment is installed on the floor T by the screen frame P so as to maintain the cylindrical shape. The floor T corresponds to the surface of the floor of the 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.

[0027] The first projector 2A and the second projector 2B are arranged 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.

[0028] The first projector 2A and the second projector 2B respectively project synchronized image lights L toward the outer peripheral surface of the screen SCR. That is, the image lights L projected onto the screen SCR by the first projector 2A and the second projector 2B form one image as a whole.

[0029] The first projector 2A and the second projector 2B are connected via a cable 1 for synchronizing the image light L. The cable 1 of this embodiment 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.

[0030] With such a configuration, the projection system 100 of the present embodiment can allow the viewer M located inside the screen SCR to view an image displayed over a full 360-degree circumference.

[0031] The first projector 2A and the second projector 2B are respectively installed in two installation units 3. The cable 1 is laid between the two installation units 3 so as to cross over the top of the screen SCR. Therefore, in the projection system 100 of the present embodiment, it is not necessary to lay the cable 1 on the floor T.

[0032] Next, the structure of the installation unit 3 will be described. The two installation units 3 have the same structure. Hereinafter, the structure will be described by taking the installation unit 3 for installing the first projector 2A as an example.

[0033] Hereinafter, the arrangement relationship of each component is sometimes described using the XYZ coordinate system shown in the drawings. In each of the drawings, 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 orthogonal to the X-axis and is an axis along the width direction of the screen on which the image light is projected. The Z-axis is orthogonal to the X-axis and the Y-axis and is an axis along the normal and vertical direction of the ground T on which the projection system 100 is installed.

[0034] In the present embodiment, for example, the two 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, the two directions along the X axis are sometimes collectively referred to as the "front-rear 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, the two 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".

[0035] In the present 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”. In addition, the vertical direction Z, the front-back direction X, and the left-right direction Y are only names used to explain the arrangement relationship of the components of the installation unit 3, and do not define the actual installation state and installation direction in the installation unit 3.

[0036] Figure 2 It is a perspective view showing a schematic structure of the installation unit 3.

[0037] like Figure 2 As shown, 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 the cable 1 connected to the first projector 2A at one end 1a and led upward.

[0038] The installation platform 10 includes a plurality of support plates 11, a frame portion 12 for holding the plurality of support plates 11, and a mounting portion 17. Each support plate 11 is formed of a plate material having a predetermined strength, and a wooden plate is used in this embodiment. The frame portion 12 is made of metal and includes a frame body 12a for holding each support plate 11. The mounting portion 17 is a portion for detachably connecting the support device 20 to the installation platform 10.

[0039] In this embodiment, each support plate 11 and the frame 12a are configured so that the outer shape of each support plate 11 is flush with the outer shape of the frame 12a when viewed from the vertical direction Z. Thus, by making each support plate 11 flush with the frame 12a, the appearance of the installation table 10 can be improved.

[0040] The upper surface of each support plate 11 constitutes a setting surface for setting the projector. The setting platform 10 of this embodiment is provided with five support plates 11 in the vertical direction Z. Thus, the setting platform 10 of this embodiment can set the setting height of the projector to five different levels according to the application. Figure 2 In FIG. 1 , it is assumed that the first projector 2A is installed on the support plate 11 located at the uppermost layer in the vertical direction Z. Therefore, in Figure 2 In the figure, the upper surface of the support plate 11 located at the uppermost layer corresponds to the installation surface 10a on which the first projector 2A is installed.

[0041] Next, the structure of the support device 20 will be described.

[0042] Figure 3 2 is a perspective view showing the structure of the support device 20. Figure 3 In order to facilitate understanding of the description, the supporting device 20 is shown in a state where it is removed from the installation table 10 . Figure 4It is a side cross-sectional view showing a state where the support device 20 is attached to the installation table 10 .

[0043] like Figure 3 As shown, the support device 20 includes a rod-shaped body 20A extending in the vertical direction Z and a cable holding portion 30. The rod-shaped body 20A has a support portion 21, a column portion 25, a spacer 26, a first fixing portion 22 and a second fixing portion 23. The support portion 21 is a columnar component, and is positioned relative to the installation surface 10a of the first projector 2A by mounting the cable holding portion 30 on the installation table 10. The support portion 21 of the present embodiment is a cylindrical component, but it can also be a quadrangular prism or other polygonal prism-shaped component. The column portion 25 is mounted on the upper side of the support portion 21 and has a structure that can be extended and retracted in the vertical direction Z. The spacer 26 is a resin spacer for mounting the column portion 25 and the cable holding portion 30.

[0044] The support device 20 is connected to the installation table 10 in a detachable manner. The support portion 21 of the support device 20 is detachable relative to the mounting portion 17 installed on the installation table 10. Specifically, the support portion 21 is detachably fixed to the mounting portion 17 by means of the first fixing portion 22 and the second fixing portion 23. That is, the support device 20 of this embodiment includes the first fixing portion 22 and the second fixing portion 23 that detachably fix the support portion 21 to the installation table 10.

[0045] The first fixing portion 22 and the second fixing portion 23 are arranged at different positions of the support portion 21 in the vertical direction Z. Specifically, the first fixing portion 22 is located above the second fixing portion 23 in the support portion 21 .

[0046] The first fixing portion 22 is attached so as to be wound around the entire circumference of the outer peripheral surface of the support portion 21, and has a first protrusion 122. The first fixing portion 22 and the outer peripheral surface of the support portion 21 are fixed by, for example, bonding.

[0047] The first protrusion 122 includes a pair of abutment portions 122b protruding in the radial direction of the support portion 21, a bent portion 122a formed by bending the distal ends of the pair of abutment portions 122b at a right angle, and a threaded portion 122c fastening the pair of abutment portions 122b together.

[0048] Similarly, the second fixing portion 23 is attached so as to be wound around the entire circumference of the outer peripheral surface of the support portion 21, and has a second protrusion 123. The second fixing portion 23 and the outer peripheral surface of the support portion 21 are fixed by, for example, bonding.

[0049] The second protrusion 123 includes a pair of abutment portions 123b protruding in the radial direction of the support portion 21, a bent portion 123a formed by bending the distal ends of the pair of abutment portions 123b at a right angle, and a threaded portion 123c fastening the pair of abutment portions 123b together.

[0050] 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 in the vertical direction Z. The first slit opening 15a corresponds to the first protrusion 122 of the first fixing portion 22, and the second slit opening 15b corresponds to the second protrusion 123 of the second fixing portion 23.

[0051] The first slit opening 15a and the second slit opening 15b have the same shape. Here, the shape of the first slit opening 15a is described as an example.

[0052] The first slit opening 15 a is formed by combining a first opening 15 a 1 and a second opening 15 a 2 which are arranged in the vertical direction Z.

[0053] 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 of 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 greater than the opening width of the second opening 15a2. The opening width of the first opening 15a1 is greater 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 greater than the height of the bent portion 122a of the first protrusion 122 in the vertical direction Z. Therefore, the first protrusion 122 can insert the bent portion 122a into the first opening 15a1 along the front-back direction X.

[0054] The opening 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 larger than the width of the pair of docking portions 123b of the first protrusion 122 in the left-right direction Y. Therefore, the first protrusion 122 can slide downward and move into the second opening 15a2 in the 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 the state where the bent portion 122a is located at the rear side (-X) of the first bracket 15 and the threaded portion 122c that fastens the pair of docking portions 122b is located at the front side (+X) of the first bracket 15. In addition, the gap between the bent portion 122a and the threaded portion 122c in the front-back direction X is preferably set to be equal to or slightly larger than the thickness of the first bracket 15.

[0055] In addition, the opening height of the second opening 15a2 is greater than the height of the first protrusion 122 in the vertical direction Z. Therefore, when the first protrusion 122 slides to a state where the lower ends of the pair of docking portions 123b abut against the lower opening end of the second opening 15a2, the entire bent portion 122a is located at 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 by the bent portion 122a abutting 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 by the threaded portion 122c abutting against the peripheral portion of the second opening 15a2 of the first slit opening 15a.

[0056] In this way, the first fixing portion 22 can attach the support portion 21 to the installation table 10 by hooking the first protrusion 122 to the first slit opening 15a of the first bracket 15. On the other hand, the first fixing portion 22 can remove the support portion 21 from the installation table 10 by sliding the first protrusion 122 toward the upper end and moving it into the first opening 15a1 of the first slit opening 15a and then pulling the first protrusion 122 forward from the first slit opening 15a.

[0057] The same can be said about the relationship between the second protrusion 123 and the second slit opening 15b. That is, the second protrusion 123 is restricted from moving forward relative to the first bracket 15 by the bent portion 123a contacting the peripheral portion of the second second opening 15a2. In addition, the second protrusion 123 is restricted from moving backward relative to the first bracket 15 by the threaded portion 123c contacting the peripheral portion of the second opening 15b of the second slit opening 15b.

[0058] Therefore, the second fixing portion 23 can attach the support portion 21 to the installation table 10 by hooking the second protrusion 123 to the second slit opening 15b of the first bracket 15. On the other hand, the second fixing portion 23 can remove the support portion 21 from the installation table 10 by sliding the second protrusion 123 toward the upper end and moving it into the first opening 15a1 of the second slit opening 15b and then pulling the first protrusion 122 out of the second slit opening 15b to the front side.

[0059] Based on such a structure, the support device 20 is hooked on the mounting portion 17 of the installation table 10 by hooking the first fixing portion 22 and the second fixing portion 23, so that Figure 4 As shown, it can be easily attached to and detached from the installation stand 10 .

[0060] like Figure 1As shown, in the projection system 100 of the present embodiment, the distance from the installation surface 10a of the first projector 2A to the cable holding portion 30 is greater than the distance from the installation surface 10a to the top surface 101 of the first projector 2A in the vertical direction Z. In addition, in the vertical direction Z, the distance from the installation surface 10a to the cable holding portion 30 is greater than the distance from the installation surface 10a to the top surface 102 of the second projector 2B.

[0061] Here, the top surface 101 of the first projector 2A corresponds to the upper surface of the exterior surface of the first projector 2A that faces the opposite side of the surface that contacts the installation surface 10a of the installation table 10. Similarly, the top surface 102 of the second projector 2B corresponds to the upper surface of the exterior surface of the second projector 2B that faces the opposite side of the surface that contacts the installation surface 10a of the installation table 10.

[0062] Here, the distance from the installation surface 10a to the cable holding portion 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 farthest from the installation surface 10a, that is, the upper end portion TP of the screen SCR in the vertical direction Z is defined as a second distance H2. In the projection system 100 of the present embodiment, the first distance H1 is greater than the second distance H2.

[0063] In other words, in the projection system 100 of the present embodiment, the cable holding unit 30 is arranged at a location higher than the installation surface 10 a of the projector, more specifically, at a location above the top end TP of the screen SCR.

[0064] Therefore, in the projection system 100 of the present embodiment, the cable holding portion 30 can hold the cable 1 connecting the first projector 2A and the second projector 2B at a position above the screen SCR.

[0065] In the projection system 100 of the present embodiment, when the cable 1 is supported by the support device 20 , the following procedure is followed.

[0066] First, by shrinking Figure 3 The cable 1 is held in the cable holding portion 30 in a state where the length of the rod-shaped body 20A is shortened by the column 25 shown in the figure. Next, after the support device 20 holding the cable 1 is mounted on the mounting portion 17 of the installation table 10, the column 25 is extended and adjusted to an arbitrary 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 an arbitrary height without performing high-altitude work using a step stool or the like.

[0067] like Figure 4 As shown, in a state where the support device 20 is mounted on the mounting portion 17 of the installation table 10 , a portion of the outer peripheral surface of the support portion 21 abuts against the installation table 10 .

[0068] When the support device 20 is mounted on the mounting portion 17 of the installation table 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 table 10. According to this structure, by making the lower end portion 21a of the support portion 21 abut against the frame portion 12, the shaking of the support portion 21 can be further suppressed.

[0069] Figure 5 It is a perspective view showing the structure of the mounting portion 17 .

[0070] like Figure 4 and Figure 5 As shown, the mounting portion 17 is fixed to a pair of support plates 11 and a frame portion 12 in the installation platform 10. In the case of this embodiment, as shown in FIG. Figure 2 As shown, the mounting portion 17 is fixed to the support plate 110 at the third level from the bottom in the vertical direction Z, the support plate 111 at the fourth level from the bottom in the vertical direction Z, and the frame 12 a supporting the support plate 111 in the frame portion 12 .

[0071] The first bracket 15 of the mounting portion 17 further includes a leg portion 151 provided at the lower end portion in the vertical direction Z and a contact portion 152 provided at the upper end portion in the vertical direction Z.

[0072] like Figure 5 As shown, the foot 151 of the first bracket 15 is Figure 4 The screw member 18 shown is fixed to the upper surface 110b of the support plate 110. The leg portion 151 has two screw holes 151a for the screw member 18 to pass through.

[0073] The contact portion 152 of the first bracket 15 contacts the inner surface 13a of one column portion 13 of the frame 12a constituting the frame portion 12 of the installation platform 10. In the case of the present embodiment, the column portion 13 is a prism-shaped column extending in the left-right direction Y, and the inner surface 13a is a surface that is orthogonal to the installation surface 10a and faces the rear side in the front-back direction X. Therefore, the first bracket 15 is arranged perpendicularly to the installation surface 10a on which the projector is installed.

[0074] The contact portion 152 has a rising wall 152a rising toward the side opposite to the frame portion 12 (the rear side in the front-rear direction X). The rising wall 152a is formed by, for example, cutting and bending a portion of the contact portion 152. The rising wall 152a is used for positioning with the second bracket 16 described later.

[0075] The second bracket 16 is an L-shaped member formed by bending a plate 90 degrees. The second bracket 16 includes a first plate portion 161 and a second plate portion 162 that are orthogonal to each other. The second plate portion 162 of the second bracket 16 is arranged to overlap with the abutment portion 152 of the first bracket 15. The second plate portion 162 of the second bracket 16 has a pair of long holes 16b. The pair of long holes 16b are arranged along the left-right direction Y, and each long hole 16b is an elliptical opening having a major axis in the vertical direction Z.

[0076] One of the pair of long holes 16b corresponds to the upright wall 152a provided on the contact portion 152. Specifically, the width of the long hole 16b in the left-right direction Y is consistent with the width of the upright wall 152a in the left-right direction Y. Therefore, the second bracket 16 can slide in the vertical direction Z while restricting the position in the left-right direction Y relative to the first bracket 15 in the state where the upright wall 152a is inserted into the long hole 16b of the second plate portion 162.

[0077] According to this structure, the interval in the vertical direction Z between the first plate portion 161 of the second bracket 16 and the foot portion 151 of the first bracket 15 can be adjusted. Therefore, even if the distance between the upper surface 110b of the support plate 110 and the back surface 111a of the support plate 111 changes by changing the thickness of the support plates 110 and 111, the mounting portion 17 can be well mounted between the upper surface 110b and the back surface 111a.

[0078] The first plate portion 161 of the second bracket 16 is fixed to the back surface 111a of the support plate 111 that supports the first projector 2A by means of the screw members 19. The first plate portion 161 has two screw holes 16a through which the screw members 19 are inserted.

[0079] The attachment portion 17 is fixed in a state where the contact portion 152 of the first bracket 15 contacts the inner surface 13 a of the column portion 13 by fixing the second bracket 16 to the back surface 111 a of the support plate 111 .

[0080] In this way, the mounting portion 17 is in a state where the second bracket 16 abuts against the back surface 111a of the support plate 111 and the abutting portion 152 of the first bracket 15 held by the second bracket 16 abuts against the inner surface 13a of the column 13. Here, the back surface 111a of the support plate 111 and the inner surface 13a of the column 13 are mutually orthogonal surfaces. In the present embodiment, the back surface 111a of the support plate 11 and the inner surface 13a of the column 13 correspond to "the first and second surfaces of the installation table that are mutually orthogonal".

[0081] In this way, the mounting portion 17 of the present embodiment is fixed to the two surfaces that are orthogonal to each other, namely, the back surface 111a and the inner surface 13a of the installation table 10. Therefore, the mounting portion 17 is mounted on the installation table 10 in a stable state with little shaking. Therefore, the mounting portion 17 can mount the support device 20 on the installation table 10 in a stable state without shaking.

[0082] Next, a description will be given of the structure of the cable holding portion 30. The cable holding portion 30 holds the cable 1 connected to the first projector 2A. Figure 6 It is a cross-sectional view showing the main structure of the cable holding portion 30 .

[0083] like Figure 6 As shown, the cable holding portion 30 includes a frame portion 31 , a connecting portion 32 , a rotating body 33 , and a shaft portion 34 .

[0084] The frame portion 31 has a substantially U-shaped cross-sectional shape. The frame portion 31 includes a first extension portion 31A, a second extension portion 31B, and a bottom plate portion 31C. The first extension portion 31A is a plate member 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 extension portion 31B is a plate member 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 extension portion 31A and the second extension portion 31B extend to the +Z direction side, i.e., the outside, compared to the rotating body 33. The bottom plate portion 31C is a plate member extending in the left-right direction Y and connecting the first extension portion 31A and the second extension portion 31B. The bottom plate portion 31C connects the portions of the first extension portion 31A and the second extension portion 31B extending to the lower side in the vertical direction Z to each other.

[0085] The cable holding portion 30 is attached to a terminal end 25a1 of a support pin 25a provided at the upper end of the column portion 25 and extending in the vertical direction Z. The frame portion 31 allows the terminal end 25a1 of the support pin 25a to be inserted through an opening 31K provided in the bottom plate portion 31C.

[0086] The spacer member 26 is a spacer that maintains the frame portion 31 and the column portion 25 in a predetermined positional relationship in the vertical direction Z. The spacer member 26 includes a through hole 26a through which the support pin 25a passes, and a seat portion 26b that supports the bottom plate portion 31C and includes a convex portion 26b1 inserted into the opening 31K. The distal end portion 25a1 of the support pin 25a inserted into the through hole 26a is arranged in the frame portion 31 via the opening 31K, passes through the washer 27, and is fixed by means of a fixing member 28 composed of, for example, a thrust nut.

[0087] The frame portion 31 is fixed to the column portion 25 in a state where movement to the lower side in the vertical direction Z is restricted by the spacer member 26 and movement to the upper side in the vertical direction Z is restricted by the fixing member 28 .

[0088] 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 around the second rotation axis C2. The second rotation axis C2 is a virtual axis passing through the support pin 25a, and the second rotation axis C2 passes through the center of the support pin 25a.

[0089] The rotating body 33 is a disc-shaped component that rotates around the first rotation axis C1. The rotating body 33 has a holding surface 33a that holds the cable 1. The holding surface 33a is equivalent to the outer peripheral surface of the cylindrical rotating body 33. The shaft portion 34 extends in the left-right direction Y and is inserted into the through hole 33b of the rotating body 33, and both ends are fixed to the frame portion 31 via bolts 34a. The shaft portion 34 holds the rotating body 33 so that it can rotate around the first rotation axis C1. The first rotation axis C1 is an imaginary axis passing through the shaft portion 34, and the first rotation axis C1 passes through the center of the shaft portion 34.

[0090] According to the cable holding portion 30 of this embodiment, when the cable 1 is installed, for example, the rotating body 33 rotates when the cable 1 arranged on the rotating body 33 is pulled, and the cable 1 is subjected to loads such as torsion and friction. This can suppress the occurrence of defects such as deformation and disconnection of the cable 1.

[0091] 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.

[0092] In the cable holding portion 30 of the present embodiment, the first extension portion 31A and the second extension portion 31B extend upward from the rotating body 33. Therefore, the cable 1 disposed on the holding surface 33a of the rotating body 33 is prevented from moving in the left-right direction Y and falling off the holding surface 33a.

[0093] In the cable holding portion 30 of the present embodiment, the portions of the first extension portion 31A and the second extension portion 31B extending upward in the vertical direction Z are connected by the connection portion 32. The connection portion 32 is disposed so as to be sandwiched between the first extension portion 31A and the second extension portion 31B, and connects the first extension portion 31A and the second extension portion 31B via a bolt 32a.

[0094] In the cable holding portion 30 of the present embodiment, the cable 1 is surrounded by the connecting portion 32, the first extending portion 31A, the second extending portion 31B, and the rotating body 33. With this configuration, the cable holding portion 30 can hold the cable 1 in a stable state without causing the cable 1 to fall off.

[0095] As described above, the projection system 100 of the present 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: the cable holder 30 that holds the cable 1 connected to the first projector 2A and the second projector 2B; and the support portion 21 that positions the cable holder 30 relative 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 holder 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.

[0096] Furthermore, in the projection system 100 of the present embodiment, the first distance H1 from the installation surface 10 a to the cable holding portion 30 is greater than or equal to the second distance H2 from the installation surface 10 a to the upper end portion TP of the screen SCR.

[0097] According to the projection system 100 of this embodiment, since the cable holding portion 30 of the support device 20 is arranged at a location higher than the installation surface 10a of the first projector 2A or the second projector 2B, the cable 1 connecting the first projector 2A and the second projector 2B can be held above the screen SCR.

[0098] Therefore, the projection system 100 of the present embodiment can suppress the contact between the cable 1 and the installation surface 10 a of the installation stand 10 or the floor T on which the installation stand 10 is installed.

[0099] This can prevent the viewer of the image from tripping over the cable 1 routed on the floor T.

[0100] When the projection system 100 is used outdoors, moisture may adhere to the floor T. Even in such a situation, since the cable 1 is not disposed on the floor T, leakage of electricity from moisture adhering to the floor T through the cable 1 can be suppressed.

[0101] In addition, the installation unit 3 of the present embodiment is an installation unit for connecting the cable 1 and installing the first projector 2A for projecting image light L, and the installation unit 3 includes: an installation table 10 including an installation surface 10a on which the first projector 2A is installed; and a support device 20 connected to the installation table 10 and supporting the cable 1. The support device 20 includes a cable holding portion 30 for holding the cable 1 and a support portion 21 for positioning the cable holding portion 30 relative to the installation surface 10a. In the vertical direction Z, the distance from the installation surface 10a to the cable holding portion 30 is greater than the distance from the installation surface 10a to the top surface 101 of the first projector 2A.

[0102] According to the installation unit 3 of the present embodiment, since the cable holding portion 30 is arranged at a location higher than the installation surface 10a of the first projector 2A, it is possible to suppress the cable 1 connected to the first projector 2A from coming into contact with the installation surface 10a of the installation table 10 or the floor T on which the installation table 10 is installed. In addition, even when moisture or the like adheres to the floor T on which the installation table 10 is installed, the installation unit 3 of the present embodiment can suppress the occurrence of an undesirable situation such as leakage of electricity from the moisture adhered to the floor T through the cable 1.

[0103] The support device 20 of the present embodiment is a support device 20 used in a projection system 100 having a first projector 2A that projects image light L onto a screen SCR, and includes: a cable holding portion 30 that holds a cable 1 connected to the first projector 2A; and a support portion 21 that positions the cable holding portion 30 relative to the installation surface 10a of the first projector 2A. In the vertical direction Z, the distance from the installation surface 10a to the cable holding portion 30 is greater than the distance from the installation surface 10a to the top surface 101 of the first projector 2A.

[0104] According to the support device 20 of the present embodiment, since the cable holding portion 30 is disposed at a location higher than the installation surface 10a of the first projector 2A, it is possible to suppress the cable 1 connected to the first projector 2A from coming into contact with the installation surface 10a of the installation table 10 or the floor T on which the installation table 10 is installed. In addition, even when moisture or the like is attached to the floor T on which the installation table 10 is installed, the support device 20 of the present embodiment can suppress the occurrence of an inconvenience such as leakage of electricity from the moisture attached to the floor T through the cable 1.

[0105] (First Modification)

[0106] Next, a first variation of the projection system 100 of the first embodiment is described. This variation is different from the projection system 100 in the structure of the cable holding portion of the support device, and is the same as the projection system 100 in other aspects. Therefore, the structure of the cable holding portion is described below, and the description of other structures is omitted.

[0107] Fig. 7A 2 is a cross-sectional view showing the main structure of the cable holding portion of this modified example. Fig. 7A In the drawings, illustrations of components that are not used for explanation are omitted or simplified.

[0108] like Fig. 7A As shown, the cable holding portion 30A of the present modification includes a frame portion 31 , a connecting portion 32 , a rotating body 133 , and a shaft portion 34 .

[0109] The rotating body 133 has a holding surface 133a for holding the cable 1. In the case of this modification, the holding surface 133a of the rotating body 133 has a recessed portion 134 that is recessed toward the shaft portion 34 when viewed in section along a YZ plane that includes the left-right direction Y and the vertical direction Z. The recessed portion 134 is continuously provided over the entire circumference of the outer peripheral surface of the rotating body 133.

[0110] In the case of this modification, the entire holding surface 133a is constituted by the recessed portion 134. The surface of the recessed portion 134 is a curved surface having a curvature toward the first rotation axis C1 of the rotating body 133. In addition, the cross-sectional shape of the cable 1 is circular.

[0111] According to the cable holding portion 30A of this modification, the cable 1 having a circular cross-sectional shape is stably held along the surface of the concave portion 134 formed of a curved surface. Therefore, even when the rotating body 133 rotates, the shaking of the cable 1 in the left-right direction Y along the shaft portion 34 can be suppressed. Therefore, the friction caused by the contact between the cable 1 and the frame portion 31 can be suppressed.

[0112] (Second Modification)

[0113] Next, a second variation of the projection system 100 of the first embodiment is described. This variation is different from the projection system 100 in the structure of the cable holding portion of the support device, and is the same as the projection system 100. Therefore, the structure of the cable holding portion is described below, and the description of other structures is omitted.

[0114] Figure 7B 2 is a cross-sectional view showing the main structure of the cable holding portion of this modified example. Figure 7B In the drawings, illustrations of components that are not used for explanation are omitted or simplified.

[0115] like Figure 7B As shown, the cable holding portion 30B of the present modification example includes a frame portion 31 , a connecting portion 32 , a rotating body 233 , and a shaft portion 34 .

[0116] The rotating body 233 has a holding surface 233a for holding the cable 1. In the case of this modification, the holding surface 233a of the rotating body 233 has a recessed portion 234 that is recessed toward the shaft portion 34 when viewed in a cross-section along the YZ plane including the left-right direction Y and the vertical direction Z. In the case of this modification, the entire holding surface 233a is constituted by the recessed portion 234. The recessed portion 234 has a V-groove-shaped cross-sectional shape. That is, the recessed portion 234 is continuously provided over the entire circumference of the outer peripheral surface of the rotating body 233.

[0117] According to the cable holding portion 30B of this modification, the cable 1 is stably held in the recess 234, so even when the rotating body 233 rotates, the shaking of the cable 1 in the left-right direction Y along the shaft 34 can be suppressed. In the case of this modification, the recess 234 is in a V-groove shape, so it is easier to restrict the shaking of the cable 1 in the left-right direction Y. Therefore, the cable 1 is less likely to contact the frame 31.

[0118] (Third Modification)

[0119] Next, a third variation of the projection system 100 of the first embodiment is described. This variation is different from the projection system 100 in the structure of the cable holding portion of the support device, and is the same as the projection system 100 in other aspects. Therefore, the structure of the cable holding portion is described below, and the description of other structures is omitted.

[0120] Figure 7C 2 is a cross-sectional view showing the main structure of the cable holding portion of this modified example. Figure 7C In the drawings, illustrations of components that are not used for explanation are omitted or simplified.

[0121] like Figure 7C As shown, the cable holding portion 30C of the present modification example includes a frame portion 31 , a connecting portion 32 , a rotating body 333 , and a shaft portion 34 .

[0122] The rotating body 333 has a holding surface 333a for holding the cable 1. In the case of this modification, the holding surface 333a of the rotating body 333 has two recessed portions 334 that are recessed toward the shaft portion 34 when viewed in a cross-section along a YZ plane including the left-right direction Y and the vertical direction Z. Each recessed portion 334 has a V-groove-shaped cross-sectional shape. That is, the difference between this modification and the second modification is that the rotating body has a plurality of recessed portions.

[0123] According to the cable holding portion 30C of the present modification, the two cables 1 can be stably held in the two recessed portions 334. That is, according to the cable holding portion 30C of the present modification, the two cables 1 can be held by one cable holding portion 30C.

[0124] In addition, in the present modification, the case where two recessed portions 334 are provided is taken as an example, but three or more recessed portions 334 may be provided depending on the number of cables 1 .

[0125] (Second embodiment)

[0126] Next, the projection system of the second embodiment will be described. Hereinafter, the same reference numerals are used for the same components as those of the projection system 100 of the first embodiment, and part of the description will be simplified or omitted.

[0127] Figure 8It is a diagram showing a schematic configuration of a projection system 1B according to this embodiment.

[0128] like Figure 8 As shown, the projection system 1B of the present embodiment includes a cylindrical screen SCR, a screen frame P, a first projector 2A, a second projector 2B, a cable 201 , a mounting stand 210 , and a support device 200 .

[0129] The installation table 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 arranged on the inner side of the screen SCR so as to face opposite sides to each other. That is, the second projector 2B projects image light to the inner side of the screen SCR from a direction different from that of the first projector 2A. The first projector 2A and the second projector 2B respectively project image light synchronized with each other toward the inner peripheral surface of the screen SCR.

[0130] With such a configuration, the projection system 1B of the present embodiment can allow the viewer M located outside the screen SCR to view an image displayed over the entire 360-degree circumference.

[0131] The support device 200 supports two cables 201 connected to the first projector 2A and the second projector 2B at one end. The cables 201 of this embodiment are, for example, power cables, and the other ends of the cables 201 are connected to a power supply device (not shown) outside the screen SCR.

[0132] The support device 200 includes a cable holding portion 230 having the same structure as the cable holding portion 30 of the first embodiment and a support portion 221 for positioning the cable holding portion 230 relative to the installation surface 210a. The support portion 221 is a substantially L-shaped support column, which is arranged from the outside to the inside of the screen SCR and supports the cable holding portion 230 at the end.

[0133] In the projection system 1B of the present embodiment, the distance from the installation surface 210a of the first projector 2A and the second projector 2B to the cable holding portion 230 is greater than the distance from the installation surface 210a to the top surface 101 of the first projector 2A and the top surface 102 of the second projector 2B in the vertical direction Z. Therefore, the projection system 1B of the present embodiment holds the cable 1 connecting the first projector 2A and the second projector 2B on the upper side of the screen SCR by the cable holding portion 30.

[0134] According to the projection system 1B of the present embodiment, it is possible to suppress the cable 201 from coming into contact with the installation surface 210a of the installation stand 210 or the floor T on which the installation stand 210 is installed. This can suppress the occurrence of an inconvenience such as a viewer of the image tripping over the cable 201 that is routed on the floor T. Furthermore, even when the projection system 1B is used outdoors, since the cable 201 is not disposed on the floor T, it is possible to suppress the occurrence of an inconvenience such as leakage of electricity from moisture attached to the floor T through the cable 201.

[0135] (Third embodiment)

[0136] Next, a projection system according to a third embodiment will be described. Hereinafter, the same reference numerals are used to denote the same components as those of the projection system 100 according to the first embodiment, and a part of the description will be simplified or omitted.

[0137] Fig. 9 It is a diagram showing a schematic configuration of a projection system 1C according to this embodiment.

[0138] like Fig. 9 As shown, the projection system 1C of the present 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 .

[0139] 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.

[0140] The first projector 2A and the second projector 2B are installed in two installation units 303 and 304 , respectively.

[0141] The installation unit 303 for installing the first projector 2A includes an installation stand 310 and a support device 320. The installation stand 310 includes an installation surface 310a for installing the first projector 2A.

[0142] The support device 320 includes a cable holding portion 330 having the same structure as the cable holding portion 30 of the first embodiment and a support portion 321 for positioning the cable holding portion 330 relative to the installation surface 310a. The support portion 321 is a substantially L-shaped support column, which extends upward from the installation table 310, bends toward the second projector 2B side, and supports the cable holding portion 330 at the end.

[0143] The installation unit 304 for installing the second projector 2B has the same structure as the installation unit 303. The installation unit 304 includes a installation table 310 and a support device 320. The support device 320 includes a cable holding portion 330 and a support portion 321. In the installation unit 304, the support portion 321 composed of a substantially L-shaped support column extends upward from the installation table 310, is bent toward the first projector 2A side, and supports the cable holding portion 330 at the end. In addition, the installation units 303 and 304 are arranged in a row in the direction along the width direction of the screen SCR so that the ends of the mutual support portions 321 are butted against each other.

[0144] In the projection system 1C of the present embodiment, the distance from the installation surface 310a of the first projector 2A and the second projector 2B to the cable holding portion 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 in the vertical direction Z. Therefore, the projection system 1C of the present embodiment holds the cable 1 connecting the first projector 2A and the second projector 2B on the upper side of the installation surface 310a using the cable holding portion 330.

[0145] According to the projection system 1C of the present embodiment, it is possible to suppress the cable 1 from coming into contact with the installation surface 310a of the installation stand 310 or the floor T on which the installation stand 310 is installed. This can suppress the occurrence of an undesirable situation in which a viewer of the image trips over the cable 1 that is routed on the floor T. Furthermore, even when the projection system 1C is used outdoors, since the cable 1 is not disposed on the floor T, it is possible to suppress the occurrence of an undesirable situation in which moisture attached to the floor T leaks through the cable 1.

[0146] In addition, in this embodiment, the support device 320 may hold the cable 1 above the screen SCR. In addition, the respective support parts 321 of the installation units 303 and 304 may be integrated.

[0147] (Fourth embodiment)

[0148] Next, a projection system according to a fourth embodiment will be described. Hereinafter, the same components as those of the projection system 100 according to the first embodiment are denoted by the same reference numerals, and a part of the description will be simplified or omitted.

[0149] Fig.10 It is a diagram showing a schematic configuration of a projection system 1D according to this embodiment.

[0150] like Fig.10 As shown, 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 .

[0151] The projection system 1D of this embodiment is used outdoors, so there is a water place 5 such as a pond around it.

[0152] 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 of 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. Thus, the first projector 2A can also operate outdoors with the 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 vehicle can be used as a power source.

[0153] The pair of support devices 420 includes a cable holding portion 430 having the same structure as the cable holding portion 30 of the first embodiment and a support portion 421 for positioning the cable holding portion 430 relative to the installation surface 410a. The support portion 421 is a support column extending in the vertical direction Z and supports the cable holding portion 430 at the distal end.

[0154] In the projection system 1D of the present embodiment, the distance from the installation surface 410a of the first projector 2A to the cable holding portion 430 is greater than the distance from the installation surface 410a to the top surface 101 of the first projector 2A in the vertical direction Z. Therefore, the projection system 1D of the present embodiment holds the cable 401 connected to the first projector 2A at one end and to the battery device 440 at the other end on the upper side of the installation surfaces 410a, 411a by the cable holding portion 430.

[0155] According to the projection system 1D of the present embodiment, it is possible to suppress the cable 401 from contacting the installation surface 410a of the first installation platform 410 or the ground T on which the first installation platform 410 is installed. Thus, it is possible to suppress the occurrence of an inconvenience such as the viewer of the image tripping over the cable 401 that is routed on the ground T. In addition, the projection system 1D of the present embodiment is used outdoors where there is water 5, so there is a possibility that moisture in the water 5 adheres to the ground T. In contrast, since the cable 401 of the projection system 1D of the present embodiment is not disposed on the ground T, it is possible to suppress the occurrence of an inconvenience such as leakage from the moisture attached to the ground T through the cable 401.

[0156] In addition, in this embodiment, the support device 420 can also hold the cable 401 on the upper side of the screen SCR.

[0157] The technical scope of the present invention is not limited to the above-mentioned embodiment, and various modifications can be made within the scope not departing from the gist of the present invention. In addition, one aspect of the present invention can be configured by appropriately combining the characteristic parts of the above-mentioned embodiments.

[0158] In the above-mentioned embodiment and modification, the case where the first projector 2A or the second projector 2B is installed on the installation platform is cited as an example, but the first projector 2A or the second projector 2B can also be used in a state where it is directly installed on the ground. In this case, the installation surface of the projector is the ground.

[0159] In addition, in the above-mentioned embodiment and modification examples, the case where an image is projected onto the screen SCR using two or less projectors is cited as an example, but three or more projectors may be used to project an image onto the screen.

[0160] In addition, in the above-mentioned embodiment and modification examples, the case where two projectors project mutually synchronized image lights toward the screen SCR is taken as an example, but the two projectors may project different image lights toward the screen SCR.

[0161] [Summary of the present disclosure]

[0162] The following is a summary of the present disclosure.

[0163] (Note 1)

[0164] A projection system comprises a support device and a first projector for projecting image light onto a screen, wherein the support device comprises: a cable holding portion for holding a cable having one end connected to the first projector; and a support portion for positioning the cable holding portion relative to a setting surface of the first projector, wherein the distance from the setting surface to the cable holding portion is greater than the distance from the setting surface to a top surface of the first projector in a vertical direction.

[0165] According to the structure of Supplementary Note 1, since the cable holding portion is arranged at a place higher than the installation surface of the first projector, the cable can be held at a position above the installation surface. Therefore, it is possible to suppress the contact between the cable and the installation surface or the ground on which the system is installed. Thus, it is possible to suppress the occurrence of an undesirable situation such as the viewer of the image tripping over the cable wound on the ground. Furthermore, when the projection system is used outdoors, even if moisture or the like is attached to the ground, since the cable is not arranged on the ground, it is possible to suppress the occurrence of an undesirable situation such as the moisture attached to the ground leaking through the cable.

[0166] (Note 2)

[0167] The projection system according to Note 1 is characterized in that when the distance from the setting surface to the cable holding portion on the upper side in the vertical direction is a first distance, and the distance from the setting surface to the position of the screen farthest from the setting surface on the upper side in the vertical direction is a second distance, the first distance is greater than the second distance.

[0168] 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.

[0169] (Note 3)

[0170] The projection system according to Supplementary Note 1 or 2 is characterized in that the projection system further comprises a setting table including the setting surface on which the first projector is set, and the support portion is connected to the setting table.

[0171] According to the configuration of Supplementary Note 3, since the support portion is connected to the installation table including the installation surface, it is easy to construct the environment of the projection system.

[0172] (Note 4)

[0173] The projection system according to Note 1 or 2 is characterized in that the cable holding portion comprises: an axis portion, which extends along a first direction intersecting the vertical direction; a rotating body, which rotates around a first rotating axis passing through the axis portion; and a frame portion, which is connected to the axis portion, the frame portion comprising: a first extension portion, which is located on one side of the first direction of the rotating body; and a second extension portion, which is located on the other side of the first direction of the rotating body, and in the second direction along the vertical direction, the first extension portion and the second extension portion protrude more than the rotating body.

[0174] According to the structure of Supplementary Note 4, since the rotating body rotates as the cable moves, it is possible to reduce the load such as twisting and friction of the cable. As a result, it is possible to suppress the occurrence of undesirable situations such as deformation and disconnection of the cable. In addition, the movement of the cable in the second direction can be restricted by the protruding parts of the first extension part and the second extension part.

[0175] (Note 5)

[0176] The projection system according to Supplementary Note 4 is characterized in that the frame portion further includes a connection portion connecting the first extension portion and the second extension portion, and the cable is surrounded by the connection portion, the first extension portion, the second extension portion, and the rotating body.

[0177] According to the structure of Supplementary Note 5, the cable holding portion can hold the cable in a stable state without falling off.

[0178] (Note 6)

[0179] The projection system according to Supplement 4 or Supplement 5 is characterized in that the rotating body has a holding surface for holding the cable, and the holding surface has a recessed portion recessed toward the shaft portion when viewed in section along a plane including the first direction and the second direction.

[0180] According to the structure of Supplementary Note 6, the cable is stably held in the recessed portion. Therefore, even when the rotating body rotates, the cable is unlikely to fall off from the rotating body.

[0181] (Note 7)

[0182] The projection system according to Supplementary Note 6, characterized in that the surface of the recessed portion is a curved surface having a curvature toward the first rotation axis of the rotating body.

[0183] According to the configuration of Supplementary Note 7, for example, a cable having a circular cross-sectional shape is stably held along the surface of the recessed portion formed of a curved surface. Therefore, even when the rotating body rotates, it is possible to suppress the cable from rattling in the second direction along the shaft portion.

[0184] (Note 8)

[0185] The projection system according to Supplement 6 or Supplement 7 is characterized in that the rotating body has a plurality of the recessed portions.

[0186] According to the structure of Supplementary Note 8, a plurality of cables can be held in a plurality of recessed portions.

[0187] (Note 9)

[0188] The projection system according to any one of Supplementary Notes 3 to 8, wherein the support device further includes a first fixing portion and a second fixing portion that fix the support portion to the installation table in a detachable manner.

[0189] According to the configuration of Supplementary Note 9, since the support portion is fixed to the installation table at two locations, namely, the first fixing portion and the second fixing portion, the support portion can be stably fixed to the installation table.

[0190] (Note 10)

[0191] The projection system according to Supplementary Note 9 is characterized in that the installation table further includes a mounting portion for mounting the first fixing portion and the second fixing portion, and the mounting portions are respectively fixed to a first surface and a second surface of the installation table that are orthogonal to each other.

[0192] According to the structure of Supplementary Note 10, the mounting portion is mounted on the installation table in a stable state with little shaking. Therefore, the mounting portion can mount the support device on the installation table in a stable state without shaking.

[0193] (Note 11)

[0194] The projection system according to Supplement 10 is characterized in that the first fixing portion has a first protrusion, the second fixing portion has a second protrusion, and the mounting portion further has a first slit opening for hooking the first protrusion and a second slit opening for hooking the second protrusion.

[0195] According to the configuration of Supplementary Note 11, by hooking the first fixing portion and the second fixing portion to the slit opening of the mounting portion of the installation table, the support device can be easily attached to and detached from the installation table.

[0196] (Note 12)

[0197] The projection system according to any one of Supplementary Notes 4 to 8, wherein the cable holding portion rotates around a second rotation axis that is orthogonal to the first rotation axis.

[0198] According to the configuration of Supplementary Note 12, the cable holding portion can be rotated about the second rotation axis, thereby adjusting the direction in which the cable is pulled out by the cable holding portion to various directions.

[0199] (Note 13)

[0200] The projection system according to any one of Supplementary Notes 3 to 11, wherein the support portion is a columnar member, and a portion of an outer peripheral surface of the support portion abuts against the installation table.

[0201] According to the configuration of Supplementary Note 13, by causing a part of the outer peripheral surface of the support portion to abut against the installation table, it is possible to further suppress the rattling of the support portion.

[0202] (Note 14)

[0203] The projection system according to any one of Notes 1 to 13 is characterized in that the projection system also has a second projector, which projects image light onto the screen from a direction different from that of the first projector, and the second projector is connected to the other end of the cable connected to the first projector.

[0204] According to the structure of Supplementary Note 14, it is possible to provide a system for displaying a more complex and attractive image by displaying images projected from two projectors.

[0205] (Note 15)

[0206] A setting unit is provided for setting a projector, the projector being connected to a cable and projecting image light, the setting unit comprising: a setting table including a setting surface for setting the projector; and a supporting device connected to the setting table for supporting the cable, the supporting device comprising: a cable holding portion for holding the cable; and a supporting portion for positioning the cable holding portion relative to the setting surface, wherein the distance from the setting surface to the cable holding portion is greater than the distance from the setting surface to the top surface of the projector on the upper side in the vertical direction.

[0207] According to the structure of Supplement 15, since the cable holding portion is arranged at a place higher than the installation surface of the projector, the cable can be held at a position above the installation surface. Therefore, it is possible to suppress the contact between the cable and the installation surface or the ground on which the installation unit is arranged. Thus, it is possible to suppress the occurrence of undesirable situations such as the viewer of the image tripping over the cable wound on the ground. Furthermore, when the projection system is used outdoors, even if moisture or the like is attached to the ground, since the cable is not arranged on the ground, it is possible to suppress the occurrence of undesirable situations such as leakage of electricity from the moisture attached to the ground through the cable.

[0208] (Note 16)

[0209] A support device is used in a projection system, the projection system has a projector that projects image light onto a screen, the support device has: a cable holding portion that holds a cable connected to the projector at one end; and a support portion that positions the cable holding portion relative to a setting surface of the projector, wherein the distance from the setting surface to the cable holding portion is greater than the distance from the setting surface to the top surface of the projector on the upper side in the vertical direction.

[0210] According to the structure of Supplementary Note 16, since the cable holding portion is arranged at a place higher than the installation surface of the projector, the cable can be held at a position above the installation surface. Therefore, it is possible to suppress the contact between the cable and the installation surface or the ground on which the projection system is installed. Thus, it is possible to suppress the occurrence of an undesirable situation such as the viewer of the image tripping over the cable wound on the ground. Furthermore, when the projection system is used outdoors, even if moisture or the like is attached to the ground, since the cable is not arranged on the ground, it is possible to suppress the occurrence of an undesirable situation such as leakage from the moisture attached to the ground through the cable.

Claims

1. A projection system, characterized in that: The projection system comprises a support device and a first projector for projecting image light onto a screen. The supporting device comprises: a cable holding portion that holds a cable having one end connected to the first projector; and a supporting portion for positioning the cable holding portion relative to a mounting surface of the first projector, On the upper side in the vertical direction, a distance from the installation surface to the cable holding portion is greater than a distance from the installation surface to a top surface of the first projector.

2. The projection system according to claim 1, characterized in that: When the distance from the installation surface to the cable holding portion on the upper side in the vertical direction is a first distance, and the distance from the installation surface to the position of 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 the second distance.

3. The projection system according to claim 1 or 2, characterized in that: The projection system further includes a setting table including the setting surface on which the first projector is set. The support portion is connected to the installation table.

4. The projection system according to claim 1, characterized in that: The cable holding portion includes: a shaft portion extending along a first direction intersecting the vertical direction; a rotating body rotating around a first rotating axis passing through the shaft portion; and a frame portion connected to the shaft portion. The frame portion includes: a first extending portion located on one side of the rotating body in the first direction; and a second extending portion located on the other side of the rotating body in the first direction. In a second direction along the vertical direction, the first extending portion and the second extending portion protrude further than the rotating body.

5. The projection system according to claim 4, characterized in that: The frame portion further includes a connecting portion connecting the first extending portion and the second extending portion. The cable is surrounded by the connecting portion, the first extending portion, the second extending portion, and the rotating body.

6. The projection system according to claim 4, characterized in that: The rotating body has a holding surface for holding the cable, The holding surface has a recessed portion recessed toward the shaft portion in a cross-sectional view taken along a plane including the first direction and the second direction.

7. The projection system according to claim 6, characterized in that: The surface of the recessed portion is a curved surface having a curvature toward the first rotation axis of the rotating body.

8. The projection system according to claim 6 or 7, characterized in that: The rotating body has a plurality of the recessed portions.

9. The projection system according to claim 3, characterized in that: The support device further includes a first fixing portion and a second fixing portion for detachably fixing the support portion to the installation table.

10. The projection system according to claim 9, characterized in that: The installation platform further includes a mounting portion for mounting the first fixing portion and the second fixing portion. The mounting portion is respectively fixed to a first surface and a second surface of the installation table that are orthogonal to each other.

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

12. The projection system according to claim 4, characterized in that: The cable holding portion rotates around a second rotation axis that is orthogonal to the first rotation axis.

13. The projection system according to claim 3, characterized in that: The support portion is a columnar component. A portion of the outer peripheral surface of the support portion abuts against the installation table.

14. The projection system according to claim 1 or 2, characterized in that: The projection system further includes a second projector that projects image light onto the screen from a direction different from that of the first projector. The second projector is connected to the other end of the cable connected to the first projector.

15. A setting unit, characterized in that: The setting unit sets a projector, which is connected to the cable and projects image light, and has: A setting table including a setting surface for setting the projector; and a supporting device connected to the installation platform 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 relative to the installation surface. On the upper side 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.

16. A supporting device, characterized in that: The support device is used for a projection system having a projector for projecting image light onto a screen, and the support device has: a cable holding portion, which holds a cable having one end connected to the projector; as well as a supporting portion for positioning the cable holding portion relative to a mounting surface of the projector, On the upper side 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.

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