Projection system

Abstract

To enhance operability in rotating a projector in a configuration rotatably supporting the projector.SOLUTION: A projection system includes a projector, a stand supporting the projector, and a connection part connected to the projector, connected to the stand and connecting the projector and the stand. The projector includes a projection lens. The projector is rotatable relatively to the stand centering a rotational axis intersecting an optical axis of the projection lens. The stand includes: a stand frame connected to the connection part; and a stand base connected to the stand frame and configured to support the weight of the projector and the stand frame in an installation state of the projection system. The stand base includes an operation part capable of operating the projector.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a projection system. [Background technology]

[0002] Among conventional projectors that project images, there are known ones that have a projector support base that rotatably supports the projector (see, for example, Patent Document 1). This type of projector has the advantage that the user can freely adjust the direction of the image light projected by the projector. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2016-027369 Summary of the Invention [Problem to be solved by the invention]

[0004] Generally, projectors are provided with operation buttons operated by the user and connection terminals for connecting cables for supplying images to the projector. In a configuration in which operation buttons are provided on the main body of a projector rotatably supported on a support base, as in Patent Document 1, the user must pay attention to ensure that the force with which the user operates the operation buttons does not cause the projector to rotate. Furthermore, in a configuration in which connection terminals are provided on the main body of the projector, the cable connected to the connection terminal is likely to get in the way when rotating the projector, so the user must rotate the projector while paying attention to the cable. [Means for solving the problem]

[0005] One aspect of the present disclosure is a projection system comprising: a projector; a stand supporting the projector; and a connection portion connected to the projector, connected to the stand, and connecting the projector and the stand, wherein the projector has a projection lens, and the projector is rotatable relative to the stand around a rotation axis that intersects with the optical axis of the projection lens, and the stand includes a stand frame connected to the connection portion and a stand base connected to the stand frame and supporting the weight of the projector and the stand frame when the projection system is installed, and the stand base is provided with an operating portion that can operate the projector.

[0006] One aspect of the present disclosure is a projection system comprising: a projector; a stand supporting the projector; a connection section connected to the projector and the stand and connecting the projector to the stand; and wiring electrically connected to a first operation board of the projector, wherein the projector has a projection lens, and the projector is rotatable relative to the stand around a rotation axis that intersects with the optical axis of the projection lens, the stand includes a stand frame connected to the connection section, and a stand base connected to the stand frame and supporting the weight of the projector and the stand frame when the projection system is installed, wherein the stand base is provided with an operation section that can operate the projector, the wiring passes from inside the projector through inside the stand frame and reaches a second operation board located inside the stand base, and the stand base has a first connection terminal that can be connected to a connection cable that transmits at least one of images and audio, and the first connection terminal is connected to the wiring via the second operation board. [Brief explanation of the drawings]

[0007] [Figure 1]FIG. 1 is a perspective view of a projection system according to a first embodiment. [Figure 2] FIG. 1 is a perspective view of a projection system. [Figure 3] A top view of a projection system with the projector facing upward. [Figure 4] FIG. [Figure 5] VV cross section of Figure 2. [Figure 6] FIG. [Figure 7] Schematic diagram of cross section VII-VII in Figure 1. [Figure 8] FIG. 10 is a perspective view of a projection system according to a second embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0008] Hereinafter, embodiments of the present disclosure will be described with reference to the drawings. In each drawing, arrows indicate directions in an installed state of the projection system 1. The symbol UP indicates upward, the symbol FR indicates forward, and the symbol R indicates right. Although not shown, the opposite direction of the symbol UP indicates downward, the opposite direction of the symbol FR indicates backward, and the opposite direction of the symbol R indicates left. In the description, directions such as front, back, left, right, and up and down are based on the projection system 1 in FIG. 1 unless otherwise specified.

[0009] [1. Embodiment 1] [1-1.Configuration] [1-1-1. Projection system configuration] 1 is a perspective view of a projection system 1 according to a first embodiment of the present disclosure, as viewed from above and front on the left side of the projection system 1. FIG. 2 is a perspective view of the projection system 1, as viewed from below and rear on the right side of the projection system 1.

[0010] The projection system 1 includes a projector 10 that projects an image and a stand 20 that supports the projector 10.

[0011] The projector 10 has a housing with a substantially rectangular parallelepiped shape. A projection lens 11 that projects image light is provided on the front surface of the projector 10. FIG. 1 shows the optical axis OA of the image light that the projection lens 11 projects onto a projection surface. The optical axis OA is the central axis of the projected image, and is, for example, a virtual axis that passes through the optical center of the projection lens 11. In FIG. 1, the image of the projector 10 is projected forward, and the optical axis OA is horizontal with the installation surface of the projection system 1. Connection holes 10a for connecting a stand 20 are provided on the right side surface 10R and left side surface 10L of the projector 10. The right side surface 10R corresponds to an example of a first side surface. The left side surface 10L corresponds to an example of a second side surface.

[0012] The stand 20 comprises a substantially disc-shaped stand base 30 and a pair of left and right stand frames 50 extending rearward and upward from the sides of the stand base 30. Ends of the stand frames 50 are connected to connection holes 10a provided on the left and right sides of the projector 10. In this way, the stand 20 supports the projector 10 from the left and right. The projector 10 is held by the stand 20 in a state where it is suspended above the installation surface.

[0013] FIG. 3 is a top view of the projection system 1 with the projection lens 11 of the projector 10 facing upward. An operation button 60 is formed on the top surface of the stand base 30. The operation button 60 is provided so that the projector 10 and the operation button 60 do not overlap in a top view when the optical axis OA of the projector 10 is perpendicular to the installation surface. The operation button 60 is also provided on the rear side of the stand base 30. A connection terminal 61 is provided on the side surface of the stand base 30. The operation button 60 corresponds to an example of an operation unit.

[0014] [1-1-2. Stand Configuration] 4 is an exploded perspective view of the stand base 30. FIG. 5 is a cross-sectional view taken along line VV of FIG. The stand base 30 is composed of a stand cover 31, a rotary table 36, and a fixing member 40.

[0015] In this embodiment, the stand cover 31 is composed of an upper plate portion 31A and a side plate portion 31B. The overall shape of the stand cover 31 is disk-shaped. The stand cover 31 has a thickness that allows it to accommodate a second operation board 33 (described later) and the like.

[0016] A guide member 32 and a second operation board 33 are arranged inside the stand cover 31. The second operation board 33 is provided with a connection terminal 61, which can be electrically connected to the power supply wiring 21 and the like located outside the stand cover 31 from the side plate portion 31B.

[0017] In this embodiment, the connection terminals 61 include a power terminal, a Universal Serial Bus (USB) terminal, and a High-Definition Multimedia Interface (HDMI) terminal. HDMI is a registered trademark.

[0018] The upper plate portion 31A forms the upper surface of the stand base 30. 4, a plurality of joining holes 31c are provided in the center of the upper plate portion 31A, into which wood screws or taps can be screwed.

[0019] The side plate portion 31B is provided with a notch 31d. The stand frame 50 is inserted into the notch 31d, and the stand base 30 and the stand frame 50 are fixed together with connecting members such as screws and bolts.

[0020] The turntable 36 is a circular, flat member overall, and has a fixing hole 38 opening at the center of the turntable 36. The outer diameter of the turntable 36 is formed to be approximately the same as the inner diameter of the stand cover 31. The turntable 36 is fitted inside the stand cover 31 and fixed to the stand cover 31, and forms the underside of the stand base 30.

[0021] A plurality of rubber feet 37 are provided on the underside of the rotary table 36, that is, on the surface facing the installation surface of the projection system 1.

[0022] The fixing hole 38 has a diameter that varies in the thickness direction of the turntable 36, with the upper diameter being smaller than the lower diameter. That is, the fixing hole 38 has a shape in which the hook portion 38A protrudes toward the center of the fixing hole 38.

[0023] A guide groove 36a is provided on the upper surface of the rotary table 36. The guide groove 36a and the guide member 32 of the stand cover 31 engage with each other, so that the stand base 30 has a rotation structure in which the stand cover 31 rotates while the rotary table 36 is fixed.

[0024] The fixing member 40 is a flat, annular member formed with approximately the same diameter as the fixing hole 38. The fixing member 40 is fitted into the fixing hole 38 from the underside of the turntable 36 and fixed to the turntable 36. The outer diameter of the fixing member 40 is such that it does not pass through the hook portion 38A, so the fixing member 40 can be fixed at a position where it abuts against the hook portion 38A. A round hole 40a and multiple joining holes 40b are provided in the center of the fixing member 40.

[0025] The round holes 40a and the joining holes 40b are provided at positions corresponding to the joining holes 31c of the stand cover 31. The stand cover 31 and the fixed member 40 are joined by inserting joining members such as screws or bolts into the joining holes 31c, the fixing holes 38, and the joining holes 40b. The rotating table 36 remains sandwiched between the stand cover 31 and the fixed member 40 by having the hook portions 38A supported by the fixed member 40, thereby constituting the stand base 30.

[0026] FIG. 6 is an exploded perspective view of the stand frame 50. As shown in FIG. As described above, the projection system 1 includes a pair of left and right stand frames 50. Each stand frame 50 is hollow and has a generally L-shape when viewed from the front. The stand frame 50 includes a first arm 50L and a second arm 50R. The first arm 50L extends from a side portion on the front side of the stand base 30 to the left, then extends rearward and upward, and is attached to a joint hole 10a provided in the left side portion 10L. The second arm 50R extends from a side portion on the front side of the stand base 30 to the right, then extends rearward and upward, and is attached to a joint hole 10a provided in the right side portion 10R. The stand frame 50 is rotatably disposed relative to the projector 10.

[0027] The stand frame 50 has a frame base 51 and a frame cover 52. The frame cover 52 is fixed to the frame base 51. There are no limitations on the structure for fixing the frame base 51 and the frame cover 52, and for example, a structure using connecting members such as bolts, nuts, and rivets, or a fitting structure such as boss fitting can be used.

[0028] A rounded rectangular opening 51a is provided at the top end of the frame base 51. The frame cover 52 is provided in a position that does not block the opening 51a when joined to the frame base 51. A hinge cover 54 is provided in the opening 51a from the outer side in the width direction of the projection system 1, and a hinge unit 100 is disposed in the opening 51a from the inner side in the width direction. The stand frame 50 is rotatably connected to the projector 10 by the hinge unit 100. That is, the projector 10 can be rotated in the up and down direction around a virtual rotation axis formed based on the hinge units 100 provided on the left and right stand frames 50. In this embodiment, the rotation axis and the optical axis OA of the projection lens 11 are formed to be perpendicular to each other. The hinge unit 100 corresponds to an example of a connection portion.

[0029] [1-1-3. Wiring layout for projection systems] 7 is a schematic cross-sectional view taken along line VII-VII in FIG. 1, and is an enlarged view of the main part including the joint between the projector 10 and the stand frame 50. As shown in FIG.

[0030] The projector 10 has a first operation board 12. The first wiring 22 extending from the first operation board 12 of the projector 10 passes through a connection hole 10a on the side surface of the projector 10 into the stand frame 50 and is electrically connected to the second wiring 23. The second wiring 23 passes through the stand frame 50, extends to the stand base 30, and is electrically connected to the second operation board 33. The second operation board 33 is electrically connected to the external power supply wiring 21, HDMI wiring, and USB wiring via connection terminals 61 provided on the side plate portion 31B of the stand cover 31. This allows wiring 24 within the projection system, including the first wiring 22 and the second wiring 23, excluding the external power supply wiring 21, to be routed to the projector 10 without being exposed. The wiring 24 may be routed together in the stand frame 50 on one side, or may be routed separately to the first arm 50L and the second arm 50R.

[0031] [1-2. How to use the projection system] In the projection system 1, the stand 20 is fixed and the projector 10 can be rotated up and down.

[0032] When rotating the projector 10, if the operation button 60 is provided on the projector 10, the user may accidentally rotate the projector 10 when pressing the operation button 60. However, in the present disclosure, the operation button 60 of the projector 10 is provided on the stand 20, and therefore, when the user operates the projector 10 using the operation button 60, it is possible to prevent the projector 10 from being accidentally rotated.

[0033] The operation buttons 60 provided on the stand base 30 are a power button, a keystone correction button, a brightness adjustment button, and a volume adjustment button for the projector 10. Using these operation buttons 60, the settings corresponding to the operation buttons 60 can be changed while the projector 10 is projecting. These operation buttons 60 are provided at the rear of the stand base 30. When the optical axis OA is horizontal to the installation surface of the projection system 1, the projection lens 11 is provided in front of the projector 10, so that when the operation buttons 60 are operated, the projection light of the projector 10 is prevented from being projected toward the user.

[0034] In the projection system 1, the turntable 36 that contacts the installation surface is rotatably supported by a fixing member 40. Therefore, with the turntable 36 in contact with the installation surface, the projection system 1 can be rotated in the horizontal direction, and the projection angle of the projector 10 in the horizontal direction can be adjusted.

[0035] When the projector 10 is rotated, the second operation board 33 of the stand 20 is provided on the stand cover 31, so the second operation board 33 and the wiring 24 also rotate accordingly. Therefore, it is possible to prevent damage to the wiring 24 in the projection system 1.

[0036] [2. Embodiment 2] A description will be given of embodiment 2. In embodiment 2, parts configured in the same manner as in embodiment 1 above will be given the same reference numerals and descriptions thereof will be omitted.

[0037] FIG. 8 is a perspective view of the projection system 1 of the second embodiment.

[0038] In the first embodiment, the stand 20 includes the stand base 30 and the rotary table 36. The operation button 60 is provided on the top surface of the stand base 30.

[0039] In the second embodiment, the stand base 30 has a stand cover 31, a rotary table 236, and a base 240. In this embodiment, an operation button 60 is provided on the top surface of the base 240. A connection terminal 61 is provided on the side surface of the base 240.

[0040] The upper surface of the base 240 has a mounting portion that supports the rotary table 236. The mounting portion supports the rotary table 236, and the stand cover 31 is rotatably supported on the upper portion of the rotary table 236. The rotary table 236 may be formed integrally with the base 240.

[0041] In the configuration of the second embodiment, the operation button 60 is provided on the upper surface of the base 240, so when a user operates the projector 10 using the operation button 60, it is possible to prevent the projector 10 from being rotated in the left-right direction by mistake.

[0042] In the configuration of the second embodiment, even when the projection system 1 is rotated left or right, the base 240 does not rotate relative to the installation surface. Therefore, even when the projection system 1 is rotated left or right, the external wiring connected to the connection terminal 61 of the base 240 does not rotate, so damage to the external wiring can be suppressed.

[0043] 3. Other Embodiments The above-described embodiments merely show one mode in which the present disclosure is applied, and any modifications and applications are possible within the scope of the gist of the present disclosure.

[0044] In each of the above-described embodiments, the first operation board 12 and the second operation board 33 are connected by wire. However, by providing a communication unit on the first operation board 12 and the second operation board 33, a wireless connection such as Bluetooth can be achieved. Wi-Fi and Bluetooth are registered trademarks.

[0045] In the above-described embodiments, the operation buttons 60 were a power button, a keystone correction button, a brightness adjustment button, and a volume adjustment button. However, the type of operation button 60 can be changed. For example, the operation buttons 60 may be buttons for calling up a menu, left / right / up / down direction buttons for changing the parameters of each item, or buttons for issuing commands such as confirm or cancel.

[0046] 4. Summary of the Disclosure A summary of this disclosure is provided below.

[0047] (Supplementary Note 1) A projection system comprising: a projector; a stand supporting the projector; and a connection part coupled to the projector and the stand, the connection part connecting the projector and the stand, wherein the projector has a projection lens, the projector is rotatable relative to the stand around a rotation axis that intersects with the optical axis of the projection lens, the stand includes a stand frame coupled to the connection part, and a stand base coupled to the stand frame, the stand base supporting the weight of the projector and the stand frame when the projection system is installed, and the stand base is provided with an operation part capable of operating the projector. According to this, by providing the operation unit on the stand base instead of the projector, it is possible to prevent the projector from rotating when the user presses the operation unit. Therefore, the user does not need to be careful about the projector rotating when pressed, and operability when rotating the projector can be improved.

[0048] (Appendix 2) A projection system as described in Appendix 1, comprising wiring electrically connected to a first operation board of the projector, the wiring passing from inside the projector through the inside of the stand frame to a second operation board arranged inside the stand base, the stand base having a power connection terminal connectable to the outside, the power connection terminal being electrically connected to the second operation board, and the operation unit including a power button that acts on the second operation board to instruct the projector to be powered on and off. By providing the power button on the stand base instead of the projector, it is possible to prevent the projector from rotating when the user presses the power button. Therefore, the user does not need to be careful about the projector rotating when pressed, and operability when rotating the projector can be improved.

[0049] (Appendix 3) A projection system as described in Appendix 1, comprising wiring electrically connected to a first operation board of the projector, the wiring passing from inside the projector through the inside of the stand frame to a second operation board arranged inside the stand base, and the operation unit including a brightness adjustment button that acts on the second operation board to instruct adjustment of the brightness of the projected image of the projector. By providing the brightness adjustment button on the stand base instead of on the projector, it is possible to prevent the projector from rotating when the user presses the power button. Therefore, the user does not need to be careful about the projector rotating when pressed, and operability when rotating the projector can be improved.

[0050] (Supplementary Note 4) The projection system described in Supplementary Note 3, wherein the operation unit includes a keystone correction button that acts on the second operation board to instruct adjustment of the shape of the projection image of the projector. By providing the keystone correction button on the stand base instead of on the projector, it is possible to prevent the projector from rotating when the user presses the power button. Therefore, the user does not need to be careful about the projector rotating when pressed, and operability when rotating the projector can be improved.

[0051] (Appendix 5) A projection system as described in Appendix 1, comprising a first communication unit provided on a first operation board of the projector, and a second communication unit provided on a second operation board of the stand base and capable of communicating with the first communication unit, wherein the operation unit includes a brightness adjustment button that acts on the second operation board to cause the second communication unit to send a signal to the first communication unit, thereby instructing adjustment of the brightness of the image projected by the projector. According to this, by providing the brightness adjustment button on the stand base instead of on the projector, it is possible to reduce the risk of the projector rotating when the user presses the power button.

[0052] (Appendix 6) A projection system as described in Appendix 5, wherein the operation unit includes a trapezoid correction button that acts on the second operation board to cause the second communication unit to send a signal to the first communication unit, thereby instructing the projector to adjust the shape of the projection image. With this, since the keystone correction button is provided on the stand base rather than on the rotatable projector, it is possible to prevent the projector from rotating when the user presses the keystone correction button. Therefore, the user does not need to be careful about the projector rotating when pressed, and operability when rotating the projector can be improved.

[0053] (Appendix 7) A projection system described in any one of Appendices 1 to 6, comprising a rotary table that is rotatable relative to the stand base, the rotary table being positioned below the stand base when the projection system is installed, and a second operation board that is placed inside the stand base being attached to the top surface of the stand base from the inside. With this, since the circuit board is disposed on the upper surface of the stand base, when the stand base starts to rotate, the circuit board and wiring also rotate together. This prevents damage to the wiring due to rotation. Therefore, the user does not need to be careful about damaging the wiring when rotating the projector, and operability when rotating the projector can be improved.

[0054] (Supplementary Note 8) The projection system according to any one of Supplementary Notes 1 to 6, wherein the operation unit is provided at a position that becomes the upper surface of the stand base when the projection system is installed. According to this, since the operation unit is provided on the upper surface of the stand base, it is easy for the user to press the operation unit, and the operability of the projection system is improved.

[0055] (Appendix 9) A projection system described in any one of Appendices 1 to 6, wherein when the projector is installed with the optical axis of the projection lens pointing vertically upward, and the projection system is viewed vertically in a plane, the operation unit is located in an area of ​​the top surface of the stand base that does not overlap with the projector. This arrangement prevents the operation buttons from overlapping with the projection system, whose optical axis faces vertically upward when viewed in a vertical plane, and prevents the projector from interfering with the user's pressing of the operation buttons, thereby improving the operability of the projection system.

[0056] (Appendix 10) A projection system as described in Appendix 9, wherein the operating unit is positioned off-center on the top surface of the stand base, and when the projection system is installed and the optical axis of the projection lens is horizontal, the operating unit is positioned off-center on the side of the projector that is away from the projection lens. With this, the operation buttons are located away from the projection lens of the projector, which prevents the projection light from entering the user's eyes when operating the operation buttons, thereby improving the operability of the projection system.

[0057] (Appendix 11) A projection system described in any one of Appendices 1 to 6, comprising wiring electrically connected to a first operation board of the projector, the wiring passing from inside the projector through inside the stand frame to a second operation board arranged inside the stand base, the stand base having a first connection terminal connectable to a connection cable that transmits at least one of images and audio, the first connection terminal being connected to the wiring via the second operation board. According to this, by providing the first connection terminal on the stand base instead of the projector, even if the projector rotates relative to the stand, the wiring connected to the first connection terminal is pulled, reducing the likelihood of it coming off the first connection terminal. Therefore, the user does not need to be careful about the wiring when rotating the projector, and operability when rotating the projector can be improved.

[0058] (Supplementary Note 12) The projection system according to Supplementary Note 11, wherein the first connection terminal is provided on a surface that becomes a side surface of the stand base when the projection system is installed. According to this, by providing the first connection terminal on the side surface of the stand base, even if the projector rotates relative to the stand, the wiring connected to the first connection terminal is less likely to collide with the rotating projector. Therefore, the user does not need to be careful of the wiring when rotating the projector, and operability when rotating the projector can be improved.

[0059] (Appendix 13) A projection system described in any one of Appendices 1 to 6, comprising wiring electrically connected to a first operation board of the projector, the wiring passing from inside the projector through inside the stand frame to reach a second operation board inside the stand base, the stand base having a first connection terminal connectable to a connection cable that transmits at least one of image and audio, and a second connection terminal connectable to the connection cable of a different standard than the first connection terminal, the first connection terminal and the second connection terminal being provided on a surface that becomes a side surface of the stand base when the projection system is installed. By providing multiple connection terminals on the side of the stand base, the connection cable can also be connected to the side of the stand base. This eliminates the need for the user to pay attention to the wiring when rotating the projector, improving operability when rotating the projector.

[0060] (Appendix 14) A projection system comprising: a projector; a stand supporting the projector; a connection part coupled to the projector and the stand and connecting the projector and the stand; and wiring electrically connected to a first operation board of the projector, wherein the projector has a projection lens, and the projector is rotatable relative to the stand around a rotation axis that intersects with the optical axis of the projection lens, and the stand includes: a stand frame coupled to the connection part; and a stand base coupled to the stand frame and supporting the weight of the projector and the stand frame when the projection system is installed, wherein the stand base is provided with an operation part that can operate the projector, and the wiring passes from inside the projector through inside the stand frame to reach a second operation board arranged inside the stand base, and the stand base has a first connection terminal that can be connected to a connection cable that transmits at least one of images and audio, and the first connection terminal is connected to the wiring via the second operation board. According to this, by providing the first connection terminal on the stand base instead of the projector, even if the projector rotates relative to the stand, the wiring connected to the first connection terminal is pulled, reducing the likelihood of it coming off the first connection terminal. Therefore, the user does not need to be careful about the wiring when rotating the projector, and operability when rotating the projector can be improved.

[0061] (Supplementary Note 15) The projection system according to Supplementary Note 14, wherein the first connection terminal is provided on a surface that becomes a side surface of the stand base when the projection system is installed. According to this, by providing the first connection terminal on the side surface of the stand base, even if the projector rotates relative to the stand, the wiring connected to the first connection terminal is less likely to collide with the rotating projector. Therefore, the user does not need to be careful of the wiring when rotating the projector, and operability when rotating the projector can be improved.

[0062] (Appendix 16) A projection system as described in Appendix 15, wherein the stand base has a second connection terminal that can be connected to the connection cable having a different standard than the first connection terminal, and the second connection terminal is provided on a surface that becomes a side surface of the stand base when the projection system is installed. By providing multiple connection terminals on the side of the stand base, the connection cable can also be connected to the side of the stand base. This eliminates the need for the user to pay attention to the wiring when rotating the projector, improving operability when rotating the projector.

[0063] (Supplementary Note 17) The projection system according to Supplementary Note 14 or 15, wherein the stand base has a second connection terminal that can be connected to the connection cable having a different standard from that of the first connection terminal. According to this, by providing the first connection terminal on the stand base instead of the projector, even if the projector rotates relative to the stand, the wiring connected to the first connection terminal is pulled, reducing the likelihood of it coming off the first connection terminal. Therefore, the user does not need to be careful about the wiring when rotating the projector, and operability when rotating the projector can be improved.

[0064] (Appendix 18) A projection system described in any one of Appendices 14 to 16, comprising power wiring electrically connected to the first operation board, the power wiring passing from inside the projector through inside the stand frame to reach the second operation board, the stand base having a power connection terminal connectable to the outside, the power connection terminal being electrically connected to the second operation board, and the operation unit including a power button that acts on the second operation board to turn the projector on and off. According to this, by providing the power button on the stand base instead of the projector, it is possible to reduce the possibility of the projector rotating when the user presses the power button. Therefore, the user does not need to be careful about the projector rotating when pressed, and operability when rotating the projector can be improved. Therefore, the user does not need to be careful about the wiring when rotating the projector, and operability when rotating the projector can be improved.

[0065] (Appendix 19) A projection system described in any one of Appendices 14 to 16, comprising a rotary table that is rotatable relative to the stand base, the rotary table being positioned below the stand base when the projection system is installed, and the second operation board being attached to the upper surface of the stand base from the inside. With this, since the circuit board is disposed on the upper surface of the stand base, when the stand base starts to rotate, the circuit board and the wiring also rotate together, which makes it less likely that the wiring will be damaged by rotation. [Explanation of symbols]

[0066] 1...Projection system, 10...Projector, 10L...Left side portion, 10R...Right side portion, 10a...Connection hole, 11...Projection lens, 12...First operation board, 20...Stand, 21...Power supply wiring, 22...First wiring, 23...Second wiring, 24...Wiring, 30...Stand base, 31...Stand cover, 31A...Upper plate portion, 31B...Side plate portion, 31c...Connection hole, 32...Guide member, 33...Second operation board, 36...Rotating table 36a...guide groove, 37...rubber foot, 38...fixing hole, 38A...hook portion, 40...fixing member, 40a...round hole, 40b...connection hole, 50...stand frame, 50L...first arm, 50R...second arm, 51...frame base, 51a...opening, 52...frame cover, 54...hinge cover, 60...operation button, 61...connection terminal, 100...hinge unit, 236...rotating table, 240...base, OA...optical axis.

Claims

1. 1. A projection system comprising: a projector; a stand that supports the projector; and a connection part that is connected to the projector and the stand and that connects the projector and the stand, the projector has a projection lens; the projector is rotatable relative to the stand about a rotation axis that intersects with an optical axis of the projection lens; the stand includes a stand frame connected to the connection portion, and a stand base connected to the stand frame and supporting the weight of the projector and the stand frame when the projection system is installed; The stand base is provided with an operation unit that can operate the projector. Projection system.

2. a wiring electrically connected to a first operation board of the projector; the wiring passes from inside the projector through inside the stand frame and reaches a second operation board disposed inside the stand base, the stand base has a power supply connection terminal connectable to an external device, the power supply connection terminal being electrically connected to the second operation board; the operation unit includes a power button that operates on the second operation board to instruct power on and off of the projector, The projection system according to claim 1 .

3. a wiring electrically connected to a first operation board of the projector; the wiring passes from inside the projector through inside the stand frame and reaches a second operation board disposed inside the stand base, the operation unit includes a brightness adjustment button that operates on the second operation board to instruct adjustment of brightness of the projection image of the projector, The projection system according to claim 1 .

4. the operation unit includes a keystone correction button that operates on the second operation board to instruct adjustment of the shape of the projection image of the projector, The projection system according to claim 3 .

5. a first communication unit provided on a first operation board of the projector; and a second communication unit provided on a second operation board of the stand base and capable of communicating with the first communication unit, the operation unit includes a brightness adjustment button that operates on the second operation board to cause the second communication unit to transmit a signal to the first communication unit, thereby instructing adjustment of brightness of the image projected by the projector, The projection system according to claim 1 .

6. the operation unit includes a keystone correction button that operates on the second operation board to cause the second communication unit to transmit a signal to the first communication unit, thereby instructing adjustment of a shape of the projection image of the projector, The projection system according to claim 5 .

7. a rotary table that is rotatable relative to the stand base; the rotary table is located below the stand base when the projection system is installed; The second operation board disposed inside the stand base is attached to the upper surface of the stand base from the inside.

7. The projection system according to claim 1.

8. the operation unit is provided at a position that becomes an upper surface of the stand base when the projection system is installed.

7. The projection system according to claim 1.

9. When the projector is installed such that the optical axis of the projection lens faces vertically upward, the operation unit is disposed in an area of ​​the upper surface of the stand base that does not overlap with the projector when the projection system is viewed in a plan view in the vertical direction.

7. The projection system according to claim 1.

10. the operation unit is disposed at a position offset from the center on the top surface of the stand base, When the projection system is installed, the operation unit is positioned on a side of the projector that is farther away from the projection lens when the optical axis of the projection lens is horizontal. The projection system according to claim 9 .

11. a wiring electrically connected to a first operation board of the projector; the wiring passes from inside the projector through inside the stand frame and reaches a second operation board disposed inside the stand base, the stand base has a first connection terminal connectable to a connection cable for transmitting at least one of an image and an audio signal; the first connection terminal is connected to the wiring via the second operation board; 7. The projection system according to claim 1.

12. the first connection terminal is provided on a surface that becomes a side surface of the stand base when the projection system is installed. The projection system according to claim 11.

13. a wiring electrically connected to a first operation board of the projector; the wiring extends from inside the projector through inside the stand frame and reaches a second operation board inside the stand base, the stand base has a first connection terminal connectable to a connection cable that transmits at least one of an image and an audio, and a second connection terminal connectable to the connection cable having a different standard from that of the first connection terminal, the first connection terminal and the second connection terminal are provided on a surface that becomes a side surface of the stand base when the projection system is installed.

7. The projection system according to claim 1.

14. 1. A projection system comprising: a projector; a stand that supports the projector; a connection unit that is connected to the projector and the stand and that connects the projector and the stand; and wiring that is electrically connected to a first operation board of the projector; The projector has a projection lens, the projector is rotatable relative to the stand around a rotation axis that intersects with an optical axis of the projection lens; the stand includes a stand frame connected to the connection portion, and a stand base connected to the stand frame and supporting the weight of the projector and the stand frame when the projection system is installed; an operation unit that can operate the projector is provided on the stand base; the wiring passes from inside the projector through inside the stand frame and reaches a second operation board disposed inside the stand base, the stand base has a first connection terminal connectable to a connection cable for transmitting at least one of an image and an audio signal; the first connection terminal is connected to the wiring via the second operation board; Projection system.

15. the first connection terminal is provided on a surface that becomes a side surface of the stand base when the projection system is installed. The projection system of claim 14.

16. the stand base has a second connection terminal that can be connected to the connection cable having a different standard from that of the first connection terminal, the second connection terminal is provided on a surface that becomes a side surface of the stand base when the projection system is installed. The projection system of claim 15.

17. the stand base has a second connection terminal that can be connected to the connection cable having a different standard from that of the first connection terminal; 16. The projection system according to claim 14 or 15.

18. a power supply wiring electrically connected to the first operation board; the power supply wiring passes from inside the projector through inside the stand frame and reaches the second operation board, the stand base has a power supply connection terminal connectable to an external device, the power supply connection terminal being electrically connected to the second operation board; the operation unit includes a power button that operates on the second operation board to instruct power on and off of the projector, 17. The projection system according to any one of claims 14 to 16.

19. a rotary table that is rotatable relative to the stand base; the rotary table is located below the stand base when the projection system is installed; The second operation board is attached to the upper surface of the stand base from the inside.

17. The projection system according to any one of claims 14 to 16.

Images