Holding device, camera unit, and imaging system

Abstract

To provide a holding device for an imaging system in which a movable camera unit can be inserted into a transparent tubular member and which is smaller than a conventional one, and to provide the camera unit and the imaging system.SOLUTION: A holding device that can be inserted into a transparent tubular member, can be moved in an extending direction of the tubular member by a moving unit provided inside the tubular member, and can be rotated about the extending direction by a rotating unit provided inside the tubular member, the holding device comprising: A holding device comprising a camera holding unit capable of holding an imaging device, wherein the camera holding unit is configured such that a wiring holding member holding a wiring connected to the imaging device follows when the camera holding unit is moved in an extending direction by a moving unit, and the camera holding unit is configured to rotate integrally with the moving unit and the wiring holding unit when the camera holding unit is rotated around the extending direction by a rotating unit.SELECTED DRAWING: Figure 5

Description

[Technical Field]

[0001] The present invention relates to a holding device, a camera unit, and an imaging system. [Background technology]

[0002] The imaging system described in Patent Document 1 is known as a technology that enables remote observation of animals and the like exhibited at zoos, aquariums, etc. In the imaging system described in Patent Document 1, a camera unit having a drive unit that can move inside the tubular member is inserted into a transparent tubular member. The camera unit is positioned so that it can capture images of the scenery outside the tubular member, and a user can observe and capture images of subjects such as animals by remotely moving the camera unit.

[0003] In this way, the camera unit moves inside the tubular member, allowing it to move stably regardless of road conditions. In addition, the drive unit does not come into contact with animals, etc., increasing the safety of both the camera unit and the subject, such as an animal. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 2023-168258 Summary of the Invention [Problem to be solved by the invention]

[0005] It is generally desirable that an imaging system (especially a tubular member) for observing and photographing a subject such as an animal be small. If the diameter of the tubular member is too large, it may limit the installation location in an animal breeding area or narrow the range of movement of the animal.

[0006] SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a holding device for an imaging system that is smaller than conventional systems and that allows a movable camera unit to be inserted into a transparent tubular member, a camera unit, and the imaging system. [Means for solving the problem]

[0007] In order to achieve the above-mentioned object, the holding device of the present invention is a holding device that can be inserted into a transparent tubular member, can be moved in the extension direction of the tubular member by a moving means provided inside the tubular member, and can be rotated around the extension direction of the tubular member by a rotating means provided inside the tubular member, and has a camera holding part that can hold an imaging device having an imaging optical system and an imaging element for photographing the outside of the tubular member, and is configured so that when the camera holding part is moved in the extension direction of the tubular member by the moving means, a wiring holding part that holds wiring connected to the imaging device follows, and when the camera holding part is rotated around the extension direction of the tubular member by the rotating means, it rotates integrally with the moving means and the wiring holding part.

[0008] In addition, in order to achieve the above-mentioned object, the camera unit of the present invention is a camera unit that can be inserted into a transparent tubular member, can be moved in the extension direction of the tubular member by a moving means provided inside the tubular member, and can be rotated around the extension direction of the tubular member by a rotating means provided inside the tubular member, and is characterized in that it has an imaging device having an imaging optical system and an imaging element for photographing the outside of the tubular member, and a camera holding part that can hold the imaging device, and when the camera holding part is moved in the extension direction of the tubular member by the moving means, a wiring holding part that holds wiring connected to the imaging device follows, and when the camera holding part is rotated around the extension direction of the tubular member by the rotating means, it is configured to rotate integrally with the moving means and the wiring holding part.

[0009] In addition, in order to achieve the above-mentioned object, the imaging system of the present invention comprises a transparent tubular member, an imaging device that can be inserted into the tubular member and has an imaging optical system and an imaging element for photographing the outside of the tubular member, a camera unit having a camera holding portion that can hold the imaging device, a moving means that is provided inside the tubular member and moves the camera unit in the extension direction of the tubular member, a rotating means that is provided inside the tubular member and rotates the camera unit around the extension direction of the tubular member, wiring connected to the imaging device, and a wiring holding member that holds the wiring, wherein the camera unit is configured so that the wiring holding member follows when the camera unit is moved in the extension direction of the tubular member by the moving means, and the camera unit is configured so that when the camera unit is rotated around the extension direction of the tubular member by the rotating means, it rotates integrally with the moving means and the wiring holding portion. [Effects of the Invention]

[0010] According to the present invention, it is possible to provide a holding device for an imaging system that is smaller than conventional systems and that allows a movable camera unit to be inserted into the interior of a transparent tubular member, a camera unit, and the imaging system. [Brief explanation of the drawings]

[0011] [Figure 1] Schematic diagram of the configuration of an imaging system according to a first embodiment [Figure 2] FIG. 1 is a schematic diagram showing a usage scene of the imaging system according to the first embodiment in landscape orientation; [Figure 3] FIG. 1 is a schematic diagram showing a usage scene of the imaging system according to the first embodiment in portrait orientation; [Figure 4] 1 is a perspective view of an appearance of an imaging device according to a first embodiment; [Figure 5] FIG. 1 is an external perspective view of an imaging system according to a first embodiment; [Figure 6] FIG. 1 is an enlarged perspective view of the periphery of an imaging device of an imaging system according to a first embodiment; [Figure 7]1 is a cross-sectional view of a translational movement unit of an imaging system according to a first embodiment; [Figure 8] FIG. 1 is an enlarged perspective view of a translational movement unit of an imaging system according to a first embodiment; [Figure 9] FIG. 1 is an enlarged perspective view of a rotation unit of an imaging system according to a first embodiment; [Figure 10] FIG. 1 is a front view showing a range of motion of the imaging system according to the first embodiment; [Figure 11] Schematic cross-sectional view of the imaging system according to the first embodiment, assuming that only the imaging device rotates. [Figure 12] 1 is a cross-sectional view showing a support structure of an imaging system according to a first embodiment; DETAILED DESCRIPTION OF THE INVENTION

[0012] [First embodiment] [Configuration of imaging system 100] First, the configuration of an imaging system 100 according to this embodiment will be described with reference to Fig. 1. Fig. 1 is a diagram schematically illustrating the components of the imaging system 100. The imaging system 100 includes a transparent pipe (tubular member, transparent tubular member) 101 as a housing, and a camera unit 610 is disposed inside the transparent pipe 101. The camera unit 610 is held so that it can translate in the extension direction of the transparent pipe 101 and tilt and rotate about the central axis of the transparent pipe 101. The camera unit 610 is a collective term for an imaging device 50 and a holding device 110, which will be described later.

[0013] The transparent pipe 101 is a watertight container, and is designed so that liquid will not enter the interior even when submerged in water. The level of sealing need only be such that it does not pose a problem in practical use of the imaging system 100. The transmission cable bundle (wiring) 90 is a bundle of multiple cables, each with one terminal connected to the imaging device 50 or a drive unit. The transmission cable bundle 90 is used to transmit instruction signals and video signals for changing the shooting settings of the imaging device 50 in the camera unit 610, and to send and receive power and control signals to the drive unit that operates the camera unit 610.

[0014] The transmission cable bundle 90 passes through a small-diameter bent pipe 102 extending from a transparent pipe 101, and is protected from the surrounding environment near the transparent pipe 101 by the small-diameter bent pipe 102. The transmission cable bundle 90 is connected to a server 10, which is connected to a display 20 and a controller 30. A user can use the controller 30 to remotely move the camera unit 610 and take pictures while viewing the image of the camera unit 610 displayed on the display 20. The server 10 is also connected to the Internet, and a user can operate the imaging system 100 from a remote location via the Internet using a tablet terminal, smartphone, PC, etc.

[0015] [Usage scenarios for the imaging system 100] Next, a usage scenario of the imaging system 100 will be described with reference to FIGS. 2 and 3. FIG. 2 is a schematic diagram showing the imaging system 100 installed in an aquarium tank. The transparent pipe 101 is submerged in water, and the small-diameter bent pipe 102 extends at a substantially right angle to the transparent pipe 101 so that its tip protrudes above the water surface W. The camera unit 610 and the transmission cable bundle 90 are completely covered by the transparent pipe 101 and the small-diameter bent pipe 102, preventing water from entering the interior. The transmission cable bundle 90 extending from the end of the small-diameter bent pipe 102 is connected to the server 10 shown in FIG. 1. A user can track and observe a living organism F, which is a subject, by operating the zooming operation, shooting operation, translational movement, and tilt rotation of the camera unit 610. By operating the imaging system 100 in this manner, it is possible to enjoy observing and photographing living organisms from angles of view that cannot be seen from outside the aquarium or from close up.

[0016] Figure 3 is a schematic diagram showing the imaging system 100 placed vertically in a deep tank in an aquarium. Unlike Figure 2, the camera unit 610 can be moved up and down and rotated horizontally (tilted around the central axis of the transparent pipe 101). The small-diameter straight pipe 103 is replaced with a straight one that extends in the same direction as the transparent pipe 101, and is positioned so that its tip protrudes above the water surface W. By moving up and down, the user can observe multiple living organisms F swimming at different depths.

[0017] In this way, the imaging system 100 can be placed at various angles and positions depending on the object to be observed, and can be placed in environments where observation is normally difficult, such as at an angle or partially buried underground. Alternatively, the imaging system 100 may be placed so that part of the transparent pipe 101 is in the air and the other part is underwater. The entire transparent pipe 101 can also be placed in the air (on the ground).

[0018] The shape and length of the small diameter straight pipe 103 (or small diameter bent pipe 102) can also be changed depending on the situation, and any shape and length may be used as long as it can protect the transmission cable bundle 90 to a safe space.

[0019] [Configuration of imaging device 50] The imaging device 50 will be described with reference to Fig. 4. Fig. 4 is an external perspective view of the imaging device 50. The imaging device 50 is an interchangeable lens camera. It has an imaging element 53 (not shown in Fig. 4) inside, and various photographic lenses 60 can be attached to a lens mount 52. Still images and videos can be taken by forming an image of a subject on the imaging element 53 through the photographic lens 60.

[0020] Terminal section 51 is provided with multiple terminals, and by connecting to server 10 via transmission cable bundle 90, it is possible to transmit video, operate imaging device 50, and supply power. Since imaging device 50 is held by the user to take pictures, it has a grip shape, a viewfinder, and various operating members, but these are not used in imaging system 100 of this embodiment, and since photography is performed by remote control, an imaging device that does not have these may also be used.

[0021] The power source may be either a built-in battery or an external wired power supply via a transmission cable bundle 90. Furthermore, although this embodiment uses an interchangeable lens camera in which the taking lens 60 can be removed, a digital camera in which the taking lens 60 and camera body (camera main body) 54 are integrated may also be used. The camera body 54 may be a mirrorless camera or a single-lens reflex camera. The camera body 54 is equipped with a viewfinder 55. The camera body 54 may also be configured to have a viewfinder attachment section instead of the viewfinder 55.

[0022] [Configuration for holding the imaging device 50] The holding configuration of the imaging device 50 of the imaging system 100 will be described with reference to Figures 5 and 6. Figure 5 is an external perspective view showing the entire imaging system 100. The coordinate axes in Figure 5 and other figures are defined as follows: The X-axis is the extension axis of the transparent pipe 101 (the central axis, an imaginary axis passing through the center of the circular cross-section of the transparent pipe 101). The Y-axis is the normal axis of the installation surface (ground, etc.) of the imaging system 100 or a plane parallel to the imaginary installation surface (ground, bottom of a water tank, etc.). The imaginary plane here refers to a plane passing through the point where the metal frame 106 would come into contact with the ground, the bottom of a water tank, etc. if the imaging system 100 were floating in the air or water. The Z-axis is an axial direction perpendicular to the X-axis and Y-axis.

[0023] The transparent pipe 101 is a transparent resin pipe made of acrylic. Openable and closable resin caps 104 are attached to both ends of the transparent pipe 101. A sealing rubber (not shown in FIG. 5) is provided on the inside of the cap 104, which is attached to the transparent pipe 101 using a screw shape and can be sealed by charging the sealing rubber. A metal frame 106 is provided as a framework at the bottom of the transparent pipe 101, and the transparent pipe 101 is attached to the metal frame 106 with a holding metal plate 105. The metal frame 106 also functions as a weight, and the mass greater than the buoyancy inside the sealed transparent pipe 101 allows the imaging system 100 to be submerged in water.

[0024] The metal frame 106 as a frame is intended to stably install the imaging system 100 on the bottom of an aquarium or the ground in an area where animals are kept, and as long as it can perform this function, a frame other than the metal frame 106, for example a plastic frame, may be used as the frame. When installing such an imaging system 100 in water, a weight can be provided in addition to the frame.

[0025] The small diameter bent pipe 102 is composed of a PVC pipe 1021, a right-angle joint 1022, and a union joint 1023. Each joint is fixed with adhesive and connected in a way that prevents liquid from entering from the outside. The union joint 1023 is fastened to the cap 104 using a screw shape, so it can be removed during transportation or replaced with a different shape from the small diameter bent pipe 102, such as the small diameter straight pipe 103 in Figure 3. A sealing rubber (not shown in Figure 5) is provided at the boundary surface of the union joint 1023, and the sealing rubber is charged after the screws are fastened, making it waterproof.

[0026] FIG. 6 is an enlarged view of region A in FIG. 5. The holding device 110 has a left side plate (first holding member, first holding portion, first holding means) 1101. It also has a right side plate (second holding member, second holding portion, second holding means) 1102 and a front metal plate (third holding member, third holding portion, third holding means, lens holding portion) 1103. It also has a bottom metal plate (fourth holding member, fourth holding portion, fourth holding means) 1104. The holding device 110 covers the imaging device 50 with these metal plates. The imaging device 50 is held by the holding device 110 by being fixed to the bottom metal plate 1104 with screws, and its position relative to the holding device 110 is fixed. More specifically, the imaging device 50 has a tripod socket (a screw hole for fixing a tripod or the like, a camera fixing hole) on its underside (bottom surface), and the bottom metal plate 1104 has a hole corresponding to the tripod socket. The imaging device 50 is fixed to the bottom metal plate 1104 by passing a screw through this hole and threading the screw into the tripod socket. Of the various components of the holding device 110, the components involved in holding the imaging device 50 are collectively referred to as a camera holding section.

[0027] A photographing lens 60 is attached to the imaging device 50, and FIG. 6 shows the state in which its optical axis 61 faces forward (in the Z-axis direction). Highly lubricating bushings 1105 are provided in three locations on each of the left and right plates 1101 and 1102. A first support column (first shaft member, first shaft portion) 111, a second support column (second shaft member, second shaft portion) 112, and a third support column (third shaft member, third shaft portion) 113 are inserted into the respective bushings 1105. This configuration supports the holding unit 110 for smooth translational movement in the X-axis direction, and each support column functions as a guide during movement. An end of a cable carrier (cable protection member, cable protection portion, cable protection means, wiring holding member) 109 is attached to the left plate 1101. The cable carrier 109 is a protective member for a cable 91 (not shown in FIG. 6) for transmitting control signals and video signals for the imaging device 50. The timing belt 121 is a part of a drive mechanism for translating the holding device 110 , and a part of the timing belt 121 is fixed to the bottom metal plate 1104 .

[0028] [Driving mechanism of imaging system 100] The translational movement mechanism of the imaging system 100 will be described with reference to Figures 7 and 8. Figure 7(a) is a top view (view from the Y-axis direction) of the mechanism provided inside the transparent pipe 101 of the imaging system 100. Figure 7(b) is a cross-sectional view taken along the line AA in Figure 7(a), and Figure 7(c) is a cross-sectional view taken along the line BB in Figure 7(a).

[0029] 7(a) is provided at the right end of the drawing. The driving unit 120 is provided with a first motor (first actuator, first driving member, first driving means) 122, which is an actuator that moves the holding device 110 in the X-axis. Similarly, a second motor (second actuator, second driving member, second driving means) 161, which is an actuator that rotates the rotating unit 160 that includes the driving unit 120, the holding device 110, and the passive rotating unit 130, is also provided. A control board 150 for controlling the first motor 122 and the second motor 161 is also provided. A communication cable 151 (not shown in FIG. 7) that transmits control commands and supplies power is connected to the control board 150.

[0030] A passive rotation unit 130 is provided at the left end in Figure 7(a). The passive rotation unit 130 has multiple passive rollers 131 arranged so as to come into contact with the inner wall of the transparent pipe 101. The passive rollers 131 play a role in supporting the end of the rotation structure during the rotation operation described below. In addition, a ball roller 132 is provided at the end of the passive rotation unit 130. The ball roller 132 reduces friction when it comes into contact with the inner surface of the cap 104 (see Figure 5) that seals the transparent pipe 101.

[0031] FIG. 7(b) mainly shows the path of the cable carrier 109. As described above, one end of the cable carrier 109 is fastened to the left side plate 1101, and the cable 91 that transmits control signals and video signals for the imaging device 50 is inserted inside the cable carrier 109. The opposite end is connected to the drive unit 120, which protects and guides the cable 91 when the holding device 110 moves in the X-axis direction. The cable carrier 109 is flexible around the Z-axis. As long as the cable carrier 109 is flexible around the Z-axis, it may or may not be flexible around other axes. The cable carrier 109 is an elastic member made of plastic, but it may also be a metal member made of aluminum or other material as long as it is flexible around the Z-axis.

[0032] The cable carrier 109 extending from the left side plate 1101 is folded back 180 degrees midway and is arranged to pass under the imaging device 50 and the bottom metal plate 1104. When the holding device 110 moves in the X-axis direction, the folded back portion absorbs the excess length, preventing the cable 91 from becoming tangled. The cable 91 guided by the cable carrier 109 to the drive unit 120 merges with the communication cable 151 (not shown in FIG. 7) which is the communication wiring of the control board 150, and is connected to the server 10 as a transmission cable bundle 90 through the small-diameter bent pipe 102 (see FIG. 1).

[0033] FIG. 7(c) mainly shows the configuration of the timing belt 121. The timing belt 121 is an elastic, belt-like component that is looped around and supported by a drive timing pulley 125 and a driven timing pulley 127. A portion of the timing belt 121 is fixed to a bottom metal plate 1104 of the holding device 110. Rotation of the drive timing pulley 125 causes the timing belt 121 to advance and retreat (rotate), thereby allowing the holding device 110 to slide in the X-axis direction. More specifically, a metal member (not shown in FIG. 7) is fixed to a portion of the timing belt 121, and this metal member is fixed to the bottom metal plate 1104 with multiple screws (not shown in FIG. 7). Therefore, when the timing belt 121 advances and retreats, the metal member also advances and retreats, and the bottom metal plate 1104 fixed to the metal member also advances and retreats, resulting in the imaging device 50 advancing and retreating (translational movement). The timing belt 121 has a drive timing pulley 125, a driven timing pulley 127, and teeth (gear portions) on which the metal members are hooked, but these are omitted from the drawings.

[0034] [Translation] 8 is a perspective view showing elements involved in the translational movement of the drive unit 120, with some members indicated by dashed lines to explain the internal elements. A first pinion gear 123 is attached to the drive shaft of a first motor 122 (shown by a dashed line in the figure). A spur gear 124 is rotatably disposed so as to mesh with the first pinion gear 123, and a drive timing pulley 125 is attached coaxially with the spur gear 124. The timing belt 121 is looped around the drive timing pulley 125. An idler pulley 126 is rotatably disposed so as to hold down the timing belt 121, and plays a role in maintaining the tension of the timing belt 121.

[0035] Therefore, as the drive shaft of the first motor 122 rotates, the first pinion gear 123 rotates, which in turn rotates the spur gear 124 and drive timing pulley 125. As a result, the timing belt 121 advances and retreats. The arrows in the figure show examples of the operation of the timing belt 121 until it is unwound by the above rotation. When the first motor 122 is rotated in the reverse direction, all the arrows move in the reverse direction.

[0036] [Tilt rotation] The tilt rotation mechanism of the imaging system 100 will be described with reference to FIG. 9. FIG. 9 is a perspective view showing elements related to tilt rotation of the drive unit 120, with some internal elements indicated by dashed lines for clarity. A second pinion gear 162 is attached to the drive shaft of the second motor 161 (shown by the dashed line in the figure). An internal gear 163 is rotatably disposed so as to mesh with the second pinion gear 162. A fixed block 141 is fastened to the internal gear 163. Four fixed blocks 141 are adhesively fixed to the inner circumferential surface of the transparent pipe 101; that is, the fixed unit 140 including the internal gear 163 is fixed to the transparent pipe 101. When the second motor 161 rotates, the second pinion gear 162 runs on the tooth surface of the internal gear 163, causing the entire rotating unit 160 to rotate relative to the fixed unit 140. As a result, the camera unit 610 rotates, and the imaging device 50 tilts.

[0037] The first motor 122, which is the drive source for translational movement, and the second motor 161, which is the drive source for tilt rotation, are arranged so as to overlap in the extension direction of the transparent pipe 101, i.e., in the X-axis direction. In other words, the first motor 122 and the second motor 161 are arranged so that at least a portion of the first motor 122 and at least a portion of the second motor 161 overlap when viewed in the Z-axis direction. This overlapping arrangement makes it possible to reduce the length of the drive unit 120 in the X-axis direction, which contributes to the miniaturization of the imaging system 100 and the expansion of the range of translational movement.

[0038] [Measures to prevent the diameter of tubular components from increasing] [Reason for not rotating the imaging device alone] The above-described movements (drives) will be explained again with reference to Fig. 10. Fig. 10 is a front view (viewed in the Z-axis direction) of the mechanism provided inside the transparent pipe 101 of the imaging system 100. As explained in Figs. 7 and 8, during translational movement, the holding device 110 that holds the imaging device 50 moves in the X-axis direction. A first motor 122 is provided in the drive unit 120, and moves the timing belt 121 back and forth to move the holding device 110, which is connected to a metal member fixed to the timing belt 121.

[0039] 9, during tilt rotation, the rotating unit 160 rotates relative to the fixed unit 140 fixed to the transparent pipe 101. The second motor 161 is provided in the driving unit 120, and the entire rotating unit 160, which is an area including the driving unit 120, the holding device 110, and the cable carrier 109, rotates. A passive rotating unit 130 is provided at the right end of the rotating unit 160 in the drawing, and passive rollers 131 arranged around it run on the inner surface of the transparent pipe 101, thereby supporting the end of the rotating unit 160. The above-mentioned range of motion realizes translational movement and tilt rotation of the imaging device 50.

[0040] The effect of tilting the entire rotating unit 160, including the translational movement mechanism, in the imaging system 100 will be described with reference to FIG. 11. FIG. 11 is a cross-sectional schematic diagram of a hypothetical imaging system 100 in which only the imaging device 50 is configured to tilt. Detailed components are omitted, and only the camera body 54, the photographic lens 60, the cable carrier 109 that holds the cable 91 essential for video transmission, and the timing belt 121, which is the translational movement mechanism, are shown. The cable carrier 109 may be understood as, for example, a cable such as the cable 91 being directly disposed. Furthermore, the timing belt 121 may be understood as being replaced by other means, such as a rack gear or a configuration in which wheels run on rails.

[0041] 11(a) shows a state in which the optical axis 61 of the taking lens 60 faces forward (as viewed in the X-axis direction). The cable carrier 109 and timing belt 121 pass under the image capture device 50. The underside of the image capture device 50 here is as follows: That is, it is the range on the side where the tripod seat of the image capture device 50 (or the hole corresponding to the tripod seat in the bottom metal plate 1104) is located, as viewed from the optical axis 61 of the taking lens 60, between the image capture device 50 and the inner circumferential surface of the transparent pipe 101. In other words, it is the range on the side opposite the side where the viewfinder unit 55 is located, as viewed from the optical axis 61 of the taking lens 60, between the image capture device 50 and the inner circumferential surface of the transparent pipe 101.

[0042] On the other hand, Figure 11(b) shows a state in which the image capture device 50 is attempting to tilt upward. In the configuration of Figure 11, the corners of the image capture device 50 interfere with the timing belt 121, limiting the range (angle) in which tilt rotation is possible. In Figure 11, as an example, the cable carrier 109 and timing belt 121 are passed under the image capture device 50, but even if they are passed through other gaps, the outer shapes of the image capture device 50 and taking lens 60 may interfere, raising concerns about impeding tilt rotation.

[0043] 11(c) is a schematic cross-sectional view of a configuration that takes into consideration the interference in FIG. 11(b). The cable carrier 109 and timing belt 121 are arranged outside the cylindrical region P that contains the outer shapes of the camera body 54 and the photographic lens 60. By arranging them in this manner, the image capture device 50 can be tilted and rotated without the image capture device 50 or the photographic lens 60 interfering with the cable carrier 109 or the timing belt 121.

[0044] However, in the configuration of FIG. 11( c ), in which the cable carrier 109 and timing belt 121 are arranged so as to completely avoid the cylindrical region P, there are many gaps, resulting in the transparent pipe 101 being larger in diameter relative to the imaging device 50. A larger diameter of the transparent pipe 101 limits the installation location of the imaging system 100, potentially making installation difficult in a narrow space such as a rocky area. Furthermore, a larger diameter of the transparent pipe 101 requires greater strength against water pressure, making it necessary to increase the thickness of the transparent pipe 101. A thicker transparent pipe 101 increases concerns about optical effects on the imaging lens 60. Furthermore, the increased gaps within the transparent pipe 101 increase the buoyancy of the imaging system 100, necessitating the attachment of a heavier weight. The larger size and weight of the imaging system 100 may impair portability and ease of handling during installation. On the other hand, in order to reduce the diameter of the transparent pipe 101, it is necessary to reduce the size of the imaging device 50 and the photographing lens 60, which limits the options for the camera body 54 and the wide variety of photographing lenses 60 that prioritize image quality.

[0045] As described above, in an imaging system 100 capable of performing translational movement and tilt rotation of the imaging device 50, if the imaging device 50 alone is configured to tilt rotate as shown in FIG. 11 , the space inside the transparent pipe 101 cannot be used efficiently, resulting in various problems. A configuration in which wiring such as the cable carrier 109 and timing belt 121 and the translational movement mechanism do not pass around the imaging device 50 is also possible, but this requires them to move forward and backward in accordance with the translational movement, which could lead to a concern that the mechanism would become larger and more complex. Therefore, the imaging system 100 employs a configuration in which the rotating unit 160, including the cable carrier 109 and timing belt 121, tilts and rotates, as described with reference to FIG. 10 . Because the tilt rotation occurs without changing the positional relationship between the imaging device 50, the cable carrier 109, and the timing belt 121, this reduces concerns about interference and prevents the transparent pipe 101 from becoming larger in diameter.

[0046] [Support placement] The arrangement of the pillars that support the components of the imaging system 100 will be described with reference to Fig. 12. Fig. 12(a) is an enlarged front view of the periphery of the imaging device 50 of the imaging system 100, and Fig. 12(b) is a cross-sectional view taken along CC in Fig. 12(a). In addition, in Fig. 12(b), the imaging element 53 is schematically superimposed to illustrate the positional relationship.

[0047] 12(b), a first support column 111, a second support column 112, and a third support column 113 are arranged inside the transparent pipe 101 so as to surround the imaging device 50. Each support column is inserted into a bushing 1105 provided on the left side plate 1101 and the right side plate 1102, respectively, and the holding device 110 is supported so as to be able to translate using the support columns as guides. In other words, the first support column 111, the second support column 112, and the third support column 113 are members (means) that have both the function of holding the holding device 110 and the function of guiding the translational movement of the holding device 110. This makes it possible to realize a simpler configuration than when a member with a holding function and a member with a guiding function are provided separately.

[0048] The center of gravity G represents the center of gravity when the camera body 54 and the photographing lens 60 are viewed as a single unit. In the cross-sectional view of FIG. 12(b), the area of ​​the triangle T formed by the first support column 111, the second support column 112, and the third support column 113 is increased, and the center of gravity G is positioned inside the triangle T, thereby enabling stable support of the holding device 110. However, if the support column is positioned in front of the photographing lens 60 in the Z-axis direction (at the very front of the photographing lens 60), the space becomes narrow unless the diameter of the transparent pipe 101 is increased, limiting the options for the photographing lens 60. Furthermore, there is a concern that the support column may be captured in the image during shooting depending on the angle of view. Therefore, in the imaging system 100, the first support column 111 is located closer to the subject than the image sensor 53 (toward the front of the camera body 54) and above the photographing lens 60, and the second support column 112 is located closer to the subject than the image sensor 53 and below the photographing lens 60. Additionally, the third support column 113 is positioned on the rear side of the camera body 54, approximately coaxial with the optical axis 61 of the photographing lens 60. By positioning the support column in this manner, the rigidity of the support column structure is increased while maximizing the arrangement space for the camera body 54 and photographing lens 60, thereby increasing the options for mounted equipment. Furthermore, by utilizing the gap between the camera body 54, photographing lens 60, and transparent pipe 101 as arrangement space for the support column, the diameter of the transparent pipe 101 can be reduced, and the dense interior reduces air gaps, which also contributes to suppressing buoyancy.

[0049] A sliding member 164 made of a highly self-lubricating resin material is disposed between the timing belt 121, cable carrier 109, and transparent pipe 101. The sliding member 164 is fixed to the fourth support column 114. The fourth support column 114 is not connected to the holding device 110, and unlike the first support column 111 to the third support column 113, it does not function as a guide during translational movement. The sliding member 164 is also disposed with a clearance so as not to come into contact with the holding device 110, and its position does not change during translational movement. However, the fourth support column 114 and the sliding member 164 are included in the rotating section 160, and rotate together with the other supports. As shown in FIGS. 8 and 9, a plurality of sliding members 164 are provided at regular intervals. By arranging the sliding member 164 in this manner, the cable carrier 109 and timing belt 121 are prevented from rubbing against the inner wall of the transparent pipe 101, preventing a decrease in transparency due to scratches and an increase in friction during rotation.

[0050] [summary] The configuration of the imaging system 100 has been described above. The imaging system 100 includes a transparent pipe 101 as a housing, and the imaging device 50 disposed therein is held so as to be able to translate in the extension direction of the transparent pipe 101 and tilt and rotate about the central axis of the transparent pipe 101. The transparent pipe 101 is sealed and waterproof, so that even if the imaging system 100 is submerged in water, it can take pictures and move without liquid entering the interior. The adoption of a configuration in which the rotating unit 160, including the drive unit 120 for translating the imaging device 50, the timing belt 121, and the cable carrier 109 for protecting and guiding the connected cable 91, all tilt and rotate together prevents the diameter of the transparent pipe 101 from becoming too large.

[0051] For example, by installing the imaging system 100 inside an aquarium tank, users can observe living organisms from angles, viewpoints, and distances that are difficult to observe from outside the tank. By minimizing the size of the imaging system 100, it can be placed in narrow spaces such as rocky areas or fish reefs. Furthermore, the imaging system 100 can be easily moved when aquarium keepers want to change the location or the aquarium tank where it is installed. In other words, the imaging system 100 is a holding device that holds the imaging device 50 movably and rotatably while also being waterproof. Commercially available cameras can be used for the imaging device 50, and various lenses and the latest models can be installed.

[0052] [Usage of imaging system] In this embodiment, the imaging system 100 has been described as being used to capture images of an aquarium, but its use is not limited to this and it can be used in a variety of environments. For example, by installing it inside a carnivorous animal cage at a zoo, it becomes possible to observe the animals from a close distance that is not normally possible. Because it is protected by the transparent pipe 101, the drive unit 120 and imaging device 50 can be operated without malfunction even in bad weather or when mud and the like are attached. Furthermore, because the drive parts are not exposed to the outside, it can be operated safely without accidentally injuring the animals.

[0053] Other possible uses include using it as a portable and waterproof means of photography for monitoring agricultural crops, or as a highly safe and low-angle means of photography for taking commemorative photos of young children at kindergarten events.

[0054] Although the preferred embodiments of the present invention have been described above, the present invention is not limited to these embodiments, and various modifications and changes are possible within the scope of the gist of the present invention.

[0055] The disclosure of the present specification includes the following holding device, camera unit, and imaging system.

[0056] [Configuration 1] A holding device that can be inserted into a transparent tubular member, that can be moved in the extension direction of the tubular member by a moving means provided inside the tubular member, and that can be rotated around the extension direction of the tubular member by a rotating means provided inside the tubular member, a camera holding portion capable of holding an imaging device having an imaging optical system and an imaging element for photographing the outside of the tubular member; the camera holding unit is configured such that when the camera holding unit is moved in the extension direction of the tubular member by the moving means, a wiring holding member that holds wiring connected to the imaging device follows the movement; the camera holding unit is configured to rotate integrally with the moving unit and the wiring holding unit when rotated by the rotating unit around the extension direction of the tubular member. A holding device characterized by:

[0057] [Configuration 2] the camera holding portion is provided on the subject side of a lens mount portion for holding the imaging optical system of the imaging device and on a first side of the side of the imaging optical system when viewed in the extension direction of the tubular member, and is configured to be held by a first support that guides the camera holding portion when the camera holding portion is moved in the extension direction of the tubular member by the moving means. 2. The holding device according to claim 1.

[0058] [Configuration 3] the camera holding portion is provided on the subject side of the lens mount portion and on a second side of the side surface of the imaging optical system opposite to the first side when viewed in the extension direction of the tubular member, and is configured to be held by a second support that guides the camera holding portion when the camera holding portion is moved in the extension direction of the tubular member by the moving means. 3. The holding device according to configuration 2.

[0059] [Configuration 4] the camera holding portion is provided on the object side of the lens mount portion and on the back side of the imaging device when viewed in the extension direction of the tubular member, and is configured to be held by a third support that guides the camera holding portion when the camera holding portion is moved in the extension direction of the tubular member by the moving means. 4. The holding device according to configuration 3.

[0060] [Configuration 5] A camera unit that can be inserted into a transparent tubular member, that can be moved in the extension direction of the tubular member by a moving means provided inside the tubular member, and that can be rotated around the extension direction of the tubular member by a rotating means provided inside the tubular member, an imaging device having an imaging optical system and an imaging element for capturing an image of the outside of the tubular member; a camera holding portion capable of holding the imaging device; the camera holding unit is configured such that when the camera holding unit is moved in the extension direction of the tubular member by the moving means, a wiring holding member that holds wiring connected to the imaging device follows the movement; the camera holding unit is configured to rotate integrally with the moving unit and the wiring holding unit when rotated by the rotating unit around the extension direction of the tubular member. A camera unit characterized by:

[0061] [Configuration 6] the imaging device has a lens mount for holding the imaging optical system, the camera holding portion is provided on the subject side of the lens mount portion and on a first side of the side surface of the imaging optical system when viewed in the extension direction of the tubular member, and is configured to be held by a first support that guides the camera holding portion when the camera holding portion is moved in the extension direction of the tubular member by the moving means. 6. The camera unit according to configuration 5.

[0062] [Configuration 7] the camera holding portion is provided on the subject side of the lens mount portion and on a second side of the side surface of the imaging optical system opposite to the first side when viewed in the extension direction of the tubular member, and is configured to be held by a second support that guides the camera holding portion when the camera holding portion is moved in the extension direction of the tubular member by the moving means. 7. The camera unit according to configuration 6.

[0063] [Configuration 8] the camera holding portion is provided on the object side of the lens mount portion and on the back side of the imaging device when viewed in the extension direction of the tubular member, and is configured to be held by a third support that guides the camera holding portion when the camera holding portion is moved in the extension direction of the tubular member by the moving means. 8. The camera unit according to configuration 7.

[0064] [Configuration 9] A transparent tubular member; an imaging device that can be inserted into the tubular member and has an imaging optical system and an imaging element for capturing an image of the outside of the tubular member; and a camera unit that has a camera holding part that can hold the imaging device; a moving means provided inside the tubular member for moving the camera unit in the extension direction of the tubular member; a rotation means provided inside the tubular member for rotating the camera unit around the extension direction of the tubular member; Wiring connected to the imaging device; a wiring holding member for holding the wiring; the camera unit is configured so that when the camera unit is moved in the extension direction of the tubular member by the moving means, the wiring holding member follows the camera unit; the camera unit is configured to rotate integrally with the moving means and the wiring holding portion when rotated by the rotating means around the extension direction of the tubular member. An imaging system characterized by:

[0065] [Configuration 10] the imaging device has a lens mount for holding the imaging optical system, the moving means has a first support; the first support pillar is provided on a subject side of the lens mount portion and on a first side of a side surface of the imaging optical system when viewed in the extension direction of the tubular member, the first support is configured to guide and hold the camera unit when the camera unit is moved in the extension direction of the tubular member by the moving means. 10. The imaging system according to configuration 9,

[0066] [Configuration 11] the moving means has a second support; the second support pillar is provided on a second side of the side surface of the imaging optical system opposite to the first side and closer to the subject than the lens mount portion when viewed in the extension direction of the tubular member, the second support is configured to guide and hold the camera unit when the camera unit is moved in the extension direction of the tubular member by the moving means. 11. The imaging system according to configuration 10.

[0067] [Configuration 12] the first support and the second support are provided such that at least a portion of the first support overlaps with at least a portion of the second support in the optical axis direction of the imaging optical system when viewed in the extension direction of the tubular member. 12. The imaging system according to configuration 11.

[0068] [Configuration 13] the moving means has a third support; the third support pillar is provided on the object side of the lens mount portion and on the rear side of the imaging device when viewed in the extension direction of the tubular member, and is configured to guide and hold the camera unit when the camera unit is moved in the extension direction of the tubular member by the moving means. 13. The imaging system according to configuration 12.

[0069] [Configuration 14] the third support is provided at a position through which an optical axis of the imaging optical system passes when viewed in the extension direction of the tubular member. 14. The imaging system according to configuration 13.

[0070] [Configuration 15] the first support pillar, the second support pillar, and the third support pillar are provided so that the center of gravity of the imaging device is located inside a triangle connecting the first support pillar, the second support pillar, and the third support pillar when viewed in the extension direction of the tubular member. 15. The imaging system according to configuration 13 or 14.

[0071] [Configuration 16] a sliding member disposed on the inner circumferential surface of the tubular member; 16. The imaging system according to any one of configurations 9 to 15,

[0072] [Configuration 17] a plurality of the sliding members are provided in the extension direction of the tubular member; 17. The imaging system according to configuration 16.

[0073] [Configuration 18] a fourth support pillar to which the sliding member is fixed and which does not function as a guide when the camera unit is moved in the extension direction of the tubular member by the moving means; 18. The imaging system according to configuration 16 or 17.

[0074] [Configuration 19] the wiring holding member is provided in a range between the imaging device and an inner peripheral surface of the tubular member on a side where a camera fixing hole of the imaging device is located as viewed from an optical axis of the imaging optical system, when viewed in the extension direction of the tubular member; 19. The imaging system according to any one of configurations 9 to 18,

[0075] [Configuration 20] the wiring holding member has elasticity, and a portion of the wiring holding member is provided inside the tubular member in a bent state; The wiring holding member is connected to the camera holding part. 20. The imaging system according to any one of configurations 9 to 19, [Configuration 21] The moving means is a circular belt portion fixed to the camera holding portion; a pulley portion that rotates the belt portion; a first motor that rotates the pulley portion, the belt portion is provided in a range between the imaging device and an inner circumferential surface of the tubular member on a side where a camera fixing hole of the imaging device is located as viewed from an optical axis of the imaging optical system, when viewed in the extension direction of the tubular member. 21. The imaging system according to any one of configurations 9 to 20,

[0076] [Configuration 22] the moving means has a first motor; the rotating means includes a second motor; the first motor and the second motor are arranged to overlap in the extension direction of the tubular member. 22. The imaging system according to any one of configurations 9 to 21,

[0077] [Configuration 23] The tubular member further includes a fixing portion fixed to the inside of the tubular member, the rotating means is configured to rotate the camera unit, the moving means, and the wiring holding member as a unit relative to the fixed portion. 23. The imaging system according to any one of configurations 9 to 22. [Explanation of symbols]

[0078] 50 Imaging device 60 Photographic lens (imaging optical system) 101 Transparent pipe (tubular member) 109 Cable carrier (wiring holding member) 110 Camera holding part (holding device)

Claims

1. A holding device that can be inserted into a transparent tubular member, that can be moved in the extension direction of the tubular member by a moving means provided inside the tubular member, and that can be rotated around the extension direction of the tubular member by a rotating means provided inside the tubular member, a camera holding portion capable of holding an imaging device having an imaging optical system and an imaging element for photographing the outside of the tubular member; the camera holding unit is configured such that when the camera holding unit is moved in the extension direction of the tubular member by the moving means, a wiring holding member that holds wiring connected to the imaging device follows the movement; the camera holding unit is configured to rotate integrally with the moving unit and the wiring holding unit when rotated by the rotating unit around the extension direction of the tubular member. A holding device characterized by:

2. the camera holding portion is provided on the subject side of a lens mount portion for holding the imaging optical system of the imaging device and on a first side of the side of the imaging optical system when viewed in the extension direction of the tubular member, and is configured to be held by a first support that guides the camera holding portion when the camera holding portion is moved in the extension direction of the tubular member by the moving means.

2. The holding device according to claim 1.

3. the camera holding portion is provided on the subject side of the lens mount portion and on a second side of the side surface of the imaging optical system opposite to the first side when viewed in the extension direction of the tubular member, and is configured to be held by a second support that guides the camera holding portion when the camera holding portion is moved in the extension direction of the tubular member by the moving means.

3. The holding device according to claim 2.

4. the camera holding portion is provided on the object side of the lens mount portion and on the rear side of the imaging device when viewed in the extension direction of the tubular member, and is configured to be held by a third support that guides the camera holding portion when the camera holding portion is moved in the extension direction of the tubular member by the moving means.

4. The holding device according to claim 3.

5. A camera unit that can be inserted into a transparent tubular member, that can be moved in the extension direction of the tubular member by a moving means provided inside the tubular member, and that can be rotated around the extension direction of the tubular member by a rotating means provided inside the tubular member, an imaging device having an imaging optical system and an imaging element for capturing an image of the outside of the tubular member; a camera holding portion capable of holding the imaging device; the camera holding unit is configured such that when the camera holding unit is moved in the extension direction of the tubular member by the moving means, a wiring holding member that holds wiring connected to the imaging device follows the movement; the camera holding unit is configured to rotate integrally with the moving unit and the wiring holding unit when rotated by the rotating unit around the extension direction of the tubular member. A camera unit characterized by:

6. the imaging device has a lens mount for holding the imaging optical system, the camera holding portion is provided on the subject side of the lens mount portion and on a first side of the side surface of the imaging optical system when viewed in the extension direction of the tubular member, and is configured to be held by a first support that guides the camera holding portion when the camera holding portion is moved in the extension direction of the tubular member by the moving means.

6. The camera unit according to claim 5.

7. the camera holding portion is provided on the subject side of the lens mount portion and on a second side of the side surface of the imaging optical system opposite to the first side when viewed in the extension direction of the tubular member, and is configured to be held by a second support that guides the camera holding portion when the camera holding portion is moved in the extension direction of the tubular member by the moving means.

7. The camera unit according to claim 6.

8. the camera holding portion is provided on the object side of the lens mount portion and on the rear side of the imaging device when viewed in the extension direction of the tubular member, and is configured to be held by a third support that guides the camera holding portion when the camera holding portion is moved in the extension direction of the tubular member by the moving means.

8. The camera unit according to claim 7.

9. A transparent tubular member; an imaging device that can be inserted into the tubular member and has an imaging optical system and an imaging element for capturing an image of the outside of the tubular member; and a camera unit that has a camera holding part that can hold the imaging device; a moving means provided inside the tubular member for moving the camera unit in the extension direction of the tubular member; a rotation means provided inside the tubular member for rotating the camera unit around the extension direction of the tubular member; Wiring connected to the imaging device; a wiring holding member for holding the wiring; the camera unit is configured so that when the camera unit is moved in the extension direction of the tubular member by the moving means, the wiring holding member follows the camera unit; the camera unit is configured to rotate integrally with the moving means and the wiring holding portion when rotated by the rotating means around the extension direction of the tubular member. An imaging system characterized by:

10. the imaging device has a lens mount for holding the imaging optical system, the moving means has a first support; the first support pillar is provided on a subject side of the lens mount portion and on a first side of a side surface of the imaging optical system when viewed in the extension direction of the tubular member, the first support is configured to guide and hold the camera unit when the camera unit is moved in the extension direction of the tubular member by the moving means.

10. The imaging system according to claim 9.

11. the moving means has a second support; the second support pillar is provided on a second side of the side surface of the imaging optical system opposite to the first side and closer to the subject than the lens mount portion when viewed in the extension direction of the tubular member, the second support is configured to guide and hold the camera unit when the camera unit is moved in the extension direction of the tubular member by the moving means. The imaging system according to claim 10 .

12. the first support and the second support are provided such that at least a portion of the first support overlaps with at least a portion of the second support in the optical axis direction of the imaging optical system when viewed in the extension direction of the tubular member. The imaging system according to claim 11 .

13. the moving means has a third support; the third support pillar is provided on the object side of the lens mount portion and on the rear side of the imaging device when viewed in the extension direction of the tubular member, and is configured to guide and hold the camera unit when the camera unit is moved in the extension direction of the tubular member by the moving means.

13. The imaging system according to claim 12.

14. the third support is provided at a position through which an optical axis of the imaging optical system passes when viewed in the extension direction of the tubular member; 14. The imaging system according to claim 13.

15. the first support pillar, the second support pillar, and the third support pillar are provided such that, when viewed in the extension direction of the tubular member, the center of gravity of the imaging device is located inside a triangle connecting the first support pillar, the second support pillar, and the third support pillar.

14. The imaging system according to claim 13.

16. a sliding member disposed on the inner circumferential surface of the tubular member; 10. The imaging system according to claim 9.

17. a plurality of the sliding members are provided in the extension direction of the tubular member; 17. The imaging system according to claim 16.

18. a fourth support pillar to which the sliding member is fixed and which does not function as a guide when the camera unit is moved in the extension direction of the tubular member by the moving means; 17. The imaging system according to claim 16.

19. the wiring holding member is provided in a range between the imaging device and an inner peripheral surface of the tubular member on a side where a camera fixing hole of the imaging device is located as viewed from an optical axis of the imaging optical system, when viewed in the extension direction of the tubular member; 10. The imaging system according to claim 9.

20. the wiring holding member has elasticity, and a portion of the wiring holding member is provided inside the tubular member in a bent state; The wiring holding member is connected to the camera holding part.

10. The imaging system according to claim 9,

21. The moving means is a circular belt portion fixed to the camera holding portion; a pulley portion that rotates the belt portion; a first motor that rotates the pulley portion, the belt portion is provided in a range between the imaging device and an inner circumferential surface of the tubular member on a side where a camera fixing hole of the imaging device is located as viewed from an optical axis of the imaging optical system, when viewed in the extension direction of the tubular member.

10. The imaging system according to claim 9.

22. the moving means has a first motor; the rotating means includes a second motor; the first motor and the second motor are arranged to overlap each other in the extension direction of the tubular member.

10. The imaging system according to claim 9.

23. The tubular member further includes a fixing portion fixed to the inside of the tubular member, the rotating means is configured to rotate the camera unit, the moving means, and the wiring holding member as a unit relative to the fixed portion.

10. The imaging system according to claim 9.

Images