Non-contact communication module and electric universal head

Abstract

To provide a non-contact communication module capable of reducing electrical interference and performing highly stable communication.SOLUTION: A non-contact communication module includes a first board 51 and a second board 55 arranged opposite to each other and rotating relative to each other, and an antenna 52 of the first board 51 and an antenna 56 of the second board 55 communicate in a non-contact state by electromagnetic field coupling. The first board 51 has a circuit section 53 disposed on the outer side of the antenna 52 and electrically connected to the antenna 52, and the second board 55 has a circuit section 57 disposed on the inner side of the antenna 56 and electrically connected to the antenna 56, and the circuit sections 51 and 55 are spaced apart with the antennas 52, 56 in between when viewed in planar projection.SELECTED DRAWING: Figure 7

Description

[Technical field]

[0001] The present disclosure relates to a non-contact communication module and an electric pan head equipped with the same. [Background technology]

[0002] In recent years, a non-contact communication module has been proposed that communicates by electromagnetic coupling between a pair of antennas located close to each other. Patent Document 1 describes a configuration in which a non-contact communication module using a pair of opposing disk-shaped antenna substrates is introduced into a rotating part and positioned so that the center of the antenna substrates coincides with the center of rotation, enabling endless rotation of 360° while communicating contactlessly. In addition, a rotation mechanism using such a non-contact communication module can be incorporated into a camera platform that mounts photography equipment, and an electric camera platform that rotates endlessly can be configured by transmitting video signals and control signals. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2019-186857 A Summary of the Invention [Problem to be solved by the invention]

[0004] In the non-contact communication module of Patent Document 1, each of the transmitting and receiving modules is composed of two boards. One board is an antenna board, and the other board is a circuit board electrically connected to the antenna board. In this case, electrical interference is likely to occur between the circuit boards, and there is a concern that the electrical connection between the boards may become unstable due to vibrations caused by the rotational driving of the boards.

[0005] The present disclosure has been made in consideration of the above-mentioned problems, and aims to provide a non-contact communication module that can reduce electrical interference between circuit sections and perform highly stable communication. [Means for solving the problem]

[0006] The non-contact communication module disclosed herein comprises a first substrate and a second substrate arranged opposite each other and rotating relative to each other, and a first antenna of the first substrate and a second antenna of the second substrate communicate in a non-contact state by coupling of an electric field or a magnetic field, wherein the first substrate has a first circuit portion electrically connected to the first antenna arranged on the outer side of the first substrate, and the second substrate has a second circuit portion electrically connected to the second antenna arranged on the inner side of the second substrate, and the first circuit portion and the second circuit portion are spaced apart across the first antenna and the second antenna when viewed in planar projection. Effect of the Invention

[0007] According to the present disclosure, a non-contact communication module is realized that can reduce electrical interference between circuit sections and perform highly stable communication. [Brief description of the drawings]

[0008] [Figure 1] 1 is a perspective view showing a schematic configuration of an electric pan head according to an embodiment of the present invention; [Diagram 2] FIG. 2 is a block diagram illustrating a functional configuration of the electric pan head according to the present embodiment. [Diagram 3] FIG. 2 is a perspective view showing the swivel head of the electric pan head according to the present embodiment with the outer wall removed. [Figure 4] 1 is a cross-sectional view showing a cross section passing through a pan rotation axis and a tilt rotation axis of an electric pan head according to an embodiment of the present invention. [Diagram 5] 5 is an enlarged cross-sectional view of the non-contact communication module and its periphery in FIG. 4. [Figure 6] 4 is an enlarged cross-sectional view showing a connection portion between the shaft member and the conductor ring portion. FIG. [Figure 7] 2 is a plan projection view showing a specific configuration of a fixed-side substrate 51 and a rotating-side substrate 55 in the non-contact communication module 20. FIG. [Figure 8]6 is a plan view of the substrate fixing member, the shaft member, the fixed-side substrate, and the rotating-side substrate in FIG. 5 in an assembled state. [Figure 9] FIG. 9 is a plan view showing another aspect of the present embodiment shown in FIG. 8, in which the rotating-side base plate 55 has a rectangular shape. [Figure 10] 4 is a block diagram showing a control signal, a video signal (image data), a power supply, and a ground wiring of the electric pan head according to the present embodiment. FIG. [Figure 11] 1 is an enlarged cross-sectional view of the periphery of a non-contact communication module according to a first modified example. [Figure 12] 12 is an enlarged cross-sectional view of a part of the fixed-side substrate fixing portion in FIG. 11. [Figure 13] 11 is an enlarged cross-sectional view of the periphery of a non-contact communication module according to Modification 2. FIG. [Figure 14] 14 is an enlarged cross-sectional view of a portion of the fixed-side substrate fixing portion in FIG. 13. FIG. [Figure 15] 11 is an enlarged cross-sectional view of the periphery of a non-contact communication module according to a third modified example. [Figure 16] 16 is an enlarged cross-sectional view of a part of the fixed-side substrate fixing portion in FIG. 15. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] Hereinafter, an embodiment of the present disclosure will be described in detail with reference to the drawings. In the following description, components common to multiple drawings are given common reference numerals. Therefore, the common components will be described with mutual reference to multiple drawings, and the description of the components given the common reference numerals will be omitted as appropriate.

[0010] [Present embodiment] The present embodiment will be described below, which discloses a non-contact communication module and an electric camera platform to which the non-contact communication module is applied.

[0011] <Outline of motorized head configuration> Fig. 1 is a perspective view showing a schematic configuration of an electric pan head according to the present embodiment, and Fig. 2 is a block diagram showing a schematic functional configuration of the electric pan head according to the present embodiment. This motorized pan head 100 is composed of a fixed base 1, a swivel head 2, and a camera unit 17. The fixed base 1, which is the base of the motorized pan head 100, is a fixed part to the installation location of the motorized pan head. The swivel head 2, which is the head, is held rotatably relative to the fixed base 1 around a pan rotation axis 3 as indicated by an arrow 5 by a pan rotation mechanism described later.

[0012] The camera unit 17 is configured to have a camera mount 19, a camera 6, and a lens 18. The camera mount 19 is held rotatably relative to the swivel head 2 about a tilt rotation axis 7 as indicated by an arrow 8 by a tilt rotation mechanism described below. Here, the pan rotation axis 3 and the tilt rotation axis 7 are arranged so as to be perpendicular to each other. The camera 6 is fixed to the camera mount 19 with screws (not shown), and the lens 18 is held to the camera 6 by a known locking mechanism.

[0013] 1, the motorized camera head 100 is fixed in an orientation in which the pan rotation axis 3 overlaps with the direction of gravity and the swivel head 2 is above the fixed base 1. The azimuth angle and elevation angle of the camera 6 can be controlled by rotating the swivel head 2 and the camera unit 17. Note that the same operation is possible even if the motorized camera head 100 is fixed in an orientation opposite to that in FIG. 1, that is, in which the pan rotation axis 3 overlaps with the direction of gravity and the swivel head 2 is below the fixed base 1.

[0014] <Internal structure of the electric tripod head> Fig. 3 is a perspective view showing the swivel head of the electric pan head with the outer wall removed. Fig. 4 is a cross-sectional view showing the electric pan head in a section passing through the pan rotation axis and the tilt rotation axis. The internal configuration of the electric pan head 100 will be described with reference to Figs. 3 and 4.

[0015] First, a pan rotation mechanism that enables rotation in the pan direction around the pan rotation axis 3 will be described. As shown in Fig. 3, the pan axis motor 4, pan axis gear box 46, and pan axis worm wheel 10 are arranged inside the swivel head 2. The pan axis motor 4 is fixed to the pan axis gear box 46, and the pan axis gear box 46 is fixed to the swivel head 2 with screws (not shown). In the pan axis gear box 46, a pan axis worm (not shown) is attached to the shaft of the pan axis motor 4. The pan axis gear box 46 is arranged inside the swivel head 2 so that the pan axis worm meshes with the pan axis worm wheel 10.

[0016] The peripheral configuration of the pan axis worm wheel 10 will be described with reference to FIG. The fixed base 1 is formed in a roughly truncated cone shape, and a pan shaft 9 is fixed to the top of the fixed base 1 with a screw (not shown). Furthermore, a pan shaft worm wheel 10 is fixed to the pan shaft 9 with a screw (not shown). Below the pan shaft worm wheel 10, a pan shaft bearing holder 12 restricts two pan shaft bearings 11 in the vertical and horizontal directions, and is fixed to the swivel head 2 with a screw (not shown). As a result, the swivel head 2 is restricted in its degrees of freedom other than rotation with respect to the fixed base 1, and is configured to be able to rotate about the pan rotation axis 3. According to the above configuration, by driving and rotating the pan axis motor 4 under the control of the motor control unit 31 shown in Figure 2, the swivel head 2 can rotate relative to the fixed base 1 around the pan rotation axis 3 through the action of the pan axis worm and the pan axis worm wheel 10.

[0017] The tilt rotation mechanism that enables rotation in the tilt direction around the tilt rotation axis 7 will be described. 3, the tilt axis motor 44, the tilt axis gear box 48, and the tilt axis worm wheel 15 are arranged in the swivel head 2. The tilt axis motor 44 is fixed to the tilt axis gear box 48, and the tilt axis gear box 48 is fixed to the swivel head 2 with screws (not shown). In the tilt axis gear box 48, a tilt axis worm (not shown) is attached to the shaft of the tilt axis motor 44. The tilt axis gear box 48 is arranged in the swivel head 2 so that the tilt axis worm meshes with the tilt axis worm wheel 15.

[0018] The peripheral configuration of the tilt axis worm wheel 15 will be described with reference to FIG. The tilt main shaft 16 is fixed to the camera mount 19 with a screw (not shown). Furthermore, the tilt shaft worm wheel 15 is fixed to the tilt main shaft 16 with a screw (not shown). The tilt shaft bearing holder 14 restricts the two tilt shaft bearings 13 in the vertical and horizontal directions, and is fixed to the swivel head 2 with a screw (not shown). As a result, the camera mount 19 is configured such that the degrees of freedom other than rotation are restricted relative to the swivel head 2, and rotation about the tilt rotation axis 7 is possible. According to the above configuration, by rotating tilt axis motor 44 under the control of motor control unit 31 shown in FIG. 2, the camera mount base 19 can be rotated relative to the swivel head 2 around the tilt rotation axis 7 by the action of the tilt axis worm and tilt axis worm wheel 15.

[0019] The configuration of the slip ring 35 and its arrangement within the swivel head 2 will be described with reference to FIG. The slip ring 35 is configured to include a conductor ring portion 32 having a plurality of conductor rings, a brush portion 33 that brings a metal brush into contact with the conductor ring portion 32, and two slip ring inner bearings 34. The conductor ring portion 32 and the brush portion 33 are rotatable via the two slip ring inner bearings 34. The conductor ring portion 32 is connected to a conductor ring portion wiring 37, and the brush portion 33 is connected to a brush portion wiring 43. As shown in FIG. 2, a synchronization signal, a control signal, and power (power supply) are supplied to the slip ring 35. Since the conductor ring portion 32 and the brush portion 33 are electrically connected in a rotatable state, the conductor ring portion wiring 37 and the brush portion wiring 43 can transmit each signal and power regardless of the rotational position.

[0020] The brush portion 33 in the slip ring 35 is fixed to a slip ring fixing member 66 by a screw (not shown). Furthermore, the slip ring fixing member 66 is fixed to the pan axis worm wheel 10 by a screw (not shown). In other words, the slip ring fixing member 66 is fixed so as not to rotate with respect to the fixed base 1.

[0021] 4, in this embodiment, one end of the slip ring, ie, brush wiring 43, is wired to the fixed base 1, and the other end, ie, conductor ring wiring 37, is wired inside the swivel head 2. This allows signals and power to be transmitted between the fixed base 1 and the swivel head 2 even when they rotate relatively to each other.

[0022] The schematic configuration of the non-contact communication module 20 according to this embodiment and the arrangement within the swivel head 2 will be described with reference to FIG. The non-contact communication module 20 includes a fixed-side substrate 51 and a rotating-side substrate 55. The fixed-side substrate 51 and the rotating-side substrate 55 can transmit signals by electromagnetic coupling of antennas arranged on both substrates. The fixed-side substrate 51 is fixed to a substrate fixing member 64, and the rotating-side substrate 55 is fixed to a shaft member 61 with screws. The shaft member 61 is rotatable about the pan rotation axis 3 relative to the substrate fixing member 64 via a slide bearing 62. Therefore, the fixed-side substrate 51 and the rotating-side substrate 55 are relatively rotatable about the pan rotation axis 3. The substrate fixing member 64 is fixed to a slip ring fixing member 66 with screws. As described above, the slip ring fixing member 66 is fixed so as not to rotate relative to the fixed base 1, so the substrate fixing member 64 and the fixed-side substrate 51 do not rotate relative to the fixed base 1 either.

[0023] After placing the fixed-side board 51 and the rotating-side board 55 in the above positions, as shown in Fig. 3, the rotating-side signal wiring 40 is wired from the rotating-side board 55 to the swivel head 2 and camera 6, and the fixed-side signal wiring 41 (not shown) is wired from the fixed-side board 51 to the fixed base 1. This allows signals to be transmitted between the fixed base 1 and the swivel head 2 even when they rotate relatively to each other.

[0024] Here, the roles of the non-contact communication module 20 and the slip ring 35 in the motorized pan head 100 will be described. The swivel head 2 of the electric pan head 100 rotates endlessly 360° relative to the fixed base 1 around the pan rotation axis 3 shown in FIG. 2 so that the entire circumference of 360° can be viewed by the camera 6. In such an electric pan head 100, it is necessary to normally transmit video signals, control signals, and power between the fixed base 1 and the swivel head 2 even in a phase of 360°. In a normal wiring connection, there is a concern that the wiring may become tangled and break when endless rotation continues in one direction. Therefore, the electric pan head 100 is equipped with the non-contact communication module 20 and slip ring 35 according to this embodiment, and transmits signals and power in the endless rotation section.

[0025] In the motorized pan head 100 of this embodiment, the camera mount 19 is designed to rotate around the tilt rotation axis 7 within a range of, for example, ±50° with the horizontal direction as the reference relative to the swivel head 2. Therefore, normal wiring is used for transmitting signals and power on the tilt axis.

[0026] <Detailed configuration of the non-contact communication module> Fig. 5 is an enlarged cross-sectional view of the non-contact communication module and its periphery in Fig. 4. The configuration of the periphery of the non-contact communication module 20 having the fixed-side substrate 51 and the rotating-side substrate 55 described above will be described with reference to Fig. 5.

[0027] The fixed-side substrate 51 is fixed to the substrate fixing member 64 by a substrate fixing screw 59 using the through hole of the fixed-side substrate fixing portion 54 shown in FIG. 7. Similarly, the rotating-side substrate 55 is fixed to the shaft member 61 by a substrate fixing screw 59 using the through hole of the rotating-side substrate fixing portion 58 shown in FIG. 7. A flanged plain bearing 62 is fitted to the substrate fixing member 64. The shaft member 61 is inserted into the hollow portion of the plain bearing 62. In this embodiment, a resin plain bearing 62 is used in consideration of manufacturing costs and slipperiness, but the material is not limited to this, and a metallic one containing a material with high slipperiness may be used. In addition, a lubricant may be applied to the sliding portion between the shaft member 61 and the plain bearing 62.

[0028] A shaft pressing member 63 is fixed by a screw to the tip of the shaft member 61 on the side inserted into the plain bearing 62. The shaft member 61 and the shaft pressing member 63 sandwich the substrate fixing member 64, thereby suppressing axial rattle of the shaft member 61. Therefore, the substrate fixing member 64 and the shaft member 61 are configured to rotate relatively around the pan rotation axis 3. At this time, the shaft member 61 slides on the plain bearing 62 in both the thrust direction and the radial direction. In addition, since the fixed side substrate 51 is fixed to the substrate fixing member 64 and the rotating side substrate 55 is fixed to the shaft member 61, the fixed side substrate 51 and the rotating side substrate 55 also rotate relatively around the pan rotation axis 3.

[0029] The peripheral configuration of the slip ring 35 disposed below the non-contact communication module 20 will be described with continued reference to FIG. As described above, the brush portion 33 of the slip ring 35 is fixed to the slip ring fixing member 66 with screws (not shown). Furthermore, the slip ring fixing member 66 is fixed to the pan axis worm wheel 10 with screws (not shown). The slip ring fixing member 66 and the substrate fixing member 64 are also fixed with screws. The substrate fixing member 64 is formed with a wall portion 64b, which fits into the outer shape of the slip ring fixing member 66 to prevent the centers of the two fixing members from shifting.

[0030] 6 is an enlarged cross-sectional view showing a connection portion between the shaft member and the conductor ring portion 32. The rotational connection configuration between the shaft member 61 and the conductor ring portion 32 of the slip ring 35 will be described with reference to FIG. A coupling 65 is fixed to the shaft of the conductor ring portion 32 of the slip ring 35 on the non-contact communication module 20 side by a set screw 65b as shown in FIG. 4. A parallel pin is pressed into the bottom surface of the shaft member 61 to form a shaft member rotation transmission portion 61a. The shaft member rotation transmission portion 61a penetrates the shaft pressing member 63 and protrudes. Meanwhile, a groove 65a is formed in the coupling 65. When the slip ring fixing member 66 and the substrate fixing member 64 are coupled, the shaft member rotation transmission portion 61a is inserted into the groove 65a. That is, the shaft member 61 and the conductor ring portion 32 are in a state of rotating in conjunction with each other via the shaft member rotation transmission portion 61a.

[0031] 5, the substrate fixing member 64, the slip ring fixing member 66, and the brush portion 33 are fixed, so that when the shaft member 61 rotates relative to the substrate fixing member 64, the conductor ring portion 32 also rotates accordingly. Note that in this embodiment, the shaft member 61 and the conductor ring portion 32 are connected by inserting a pin into a groove, but the connection method is not limited to this. For example, a structure in which an elastic member is sandwiched between the shaft member 61 and the coupling 65 may also be used.

[0032] 3 to 5, a configuration for transmitting the rotation of the swivel head 2 relative to the fixed base 1 to the rotation within the non-contact communication module 20 and the slip ring 35 will be described. As described above, the slip ring fixing member 66 is fixed to the fixed base 1 via the pan axis worm wheel 10. Meanwhile, as shown in FIG. 3, a rotation transmission guide 68 is fixed to the housing of the swivel head 2. The rotation transmission guide 68 is a metal plate bent into an L shape and fixed to the housing by screws. A shield top plate 67 is attached to the tip of the rotation transmission guide 68. A substantially rectangular transmission hole 67a is formed in the shield top plate 67, and the shaft member 61 is inserted into this hole. The head board wiring 27 connected from the conductor ring portion 32 of the slip ring to the swivel head board 38 is restrained to the rotation transmission guide 68 by a tie wrap 36.

[0033] When the swivel head 2 rotates around the pan rotation axis 3, the shield top plate 67 also rotates via the rotation transmission guide 68. At this time, the transmission hole 67a comes into contact with the shaft member 61, and a force is applied in the direction of rotation around the pan rotation axis 3. Since the substrate fixing member 64 is fixed to the fixed base 1 via the slip ring fixing member 66, the shaft member 61 rotates relative to the substrate fixing member 64 while sliding on the plain bearing 62. In addition, the coupling 65 also rotates following the rotation via the shaft member rotation transmission part 61a of the shaft member 61 shown in FIG. 6. Since the brush part 33 of the slip ring 35 is fixed to the slip ring fixing member 66, the conductor ring part 32 connected to the coupling 65 rotates relative to the brush part 33.

[0034] <Basic configuration of contactless communication module> The non-contact communication module according to this embodiment includes a first substrate and a second substrate that are arranged opposite each other and rotate relative to each other. A first antenna is provided on the first substrate, and a second antenna is provided on the second substrate. The first substrate and the second substrate are arranged opposite each other with a space therebetween, and the first antenna and the second antenna are coupled by electric or magnetic fields (electromagnetic field coupling), thereby allowing communication to be performed in a non-contact state between the first substrate and the second substrate.

[0035] In this embodiment, for each substrate, both the antenna and the electric circuit electrically connected thereto are provided within the same substrate. Therefore, even if vibration occurs during rotational driving, the electrical connection between the antenna and the electric circuit in each substrate is not affected, and the electrical connection is stably maintained. In addition, in this non-contact communication module, it is desirable that the first antenna and the second antenna are at least partially overlapped in a planar projection view. This ensures reliable electromagnetic field coupling between the first antenna and the second antenna.

[0036] In this embodiment, a first circuit section electrically connected to the first antenna is disposed in an outer region of the first substrate relative to the first antenna. Meanwhile, a second circuit section electrically connected to the second antenna is disposed in an inner region of the second substrate relative to the second antenna. In a planar projection view, the first circuit section and the second circuit section are spaced apart with the first antenna and the second antenna interposed therebetween.

[0037] As described above, this non-contact communication module has two substrates, each of which is provided with an antenna and an electric circuit electrically connected thereto, and these substrates are arranged to face each other. In this case, when the first circuit section of the first substrate and the second circuit section of the second substrate are at least partially overlapped in a planar projection view, electrical interference is likely to occur between the first circuit section and the second circuit section, and there is a risk that stable communication between the substrates is hindered. In this embodiment, since the first circuit section and the second circuit section are separated from each other with the first antenna and the second antenna sandwiched therebetween in a planar projection view, the separation distance between the first circuit section and the second circuit section is sufficiently maintained, and the occurrence of electrical interference between these electric circuits is suppressed. This realizes stable communication between the first substrate and the second substrate.

[0038] Here, it is desirable to dispose the first fixing portion in the region of the first circuit portion on the first substrate, and the second fixing portion in the region of the second circuit portion on the second substrate. As described above, the first circuit portion and the second circuit portion are separated from each other with the first antenna and the second antenna interposed therebetween, so that the first fixing portion and the second fixing portion are also separated from each other. This configuration prevents the first screw and the second screw from coming close to each other and interfering with each other in the space formed in the region where the first substrate and the second substrate face each other, and further narrows the gap between the substrates.

[0039] This non-contact communication module includes a fixing member and an axis member that are rotatable relative to each other, and the first substrate is fixed to the fixing member at its first fixing portion, and the second substrate is fixed to the axis member at its second fixing portion. At the first fixing portion, a first screw is inserted into, for example, a first through hole formed in the first substrate, and the first substrate is fixed to the axis member. At the second fixing portion, a second screw is inserted into, for example, a second through hole formed in the second substrate, and the second substrate is fixed to the fixing member. Here, the second fixing portion that is fixed to the axis member can be provided at a position where the second screw does not exist in a space formed in the region where the first substrate and the second substrate face each other. In this way, it is possible to avoid a situation where the head of the second screw is disposed in the space and interferes with the first substrate or the head of the first screw, and it is possible to narrow the separation distance (gap) between the substrates and improve communication quality.

[0040] Furthermore, it is desirable that the first substrate is smaller than the second substrate, and that when the first substrate and the second substrate are arranged opposite each other, the rotation locus of the outer shape of the second substrate and the first fixing portion of the first substrate do not overlap in a planar projection view when both substrates are rotated. In this configuration, the first screw is arranged outside the rotation locus of the outer shape of the second substrate, and interference between the second substrate and the first screw is avoided. Since neither the second screw nor the first screw exists in the space formed in the region where the first substrate and the second substrate face each other, the separation distance (gap) between the substrates is narrowed as much as possible, and communication quality is further improved.

[0041] <Specific configuration of the non-contact communication module> The non-contact communication module 20 according to this embodiment transmits video signals and control signals by electromagnetic field coupling between the fixed-side substrate 51, which is a first substrate, and the rotation-side substrate 55, which is a second substrate. Specific configurations of the fixed-side substrate 51 and the rotation-side substrate 55 in the non-contact communication module 20 will be described with reference to Fig. 7. Fig. 7(a) shows the internal configuration of the fixed-side substrate 51, and Fig. 7(b) shows the internal configuration of the rotation-side substrate 55. Both are top views seen from the antenna unit side, which will be described later. For ease of explanation, the substrate fixing member 64, the shaft member 61, and the slip ring 35 are described as components arranged around the non-contact communication module 20, but in this embodiment, these components may also be components included in the non-contact communication module 20.

[0042] The fixed-side substrate 51 in Fig. 7(a) is configured to include a fixed-side antenna section 52 which is a first antenna that transmits a signal by electromagnetic field coupling, a fixed-side circuit section 53 which is a first circuit section that converts the signal, and a fixed-side substrate fixing section 54 which is a first fixing section for fixing the substrate. The shape of the fixed-side substrate 51 is a disk (a so-called doughnut shape) with a through hole disposed near the center. For example, the outer diameter of the fixed-side substrate 51 is about 90 mm, the diameter of the through hole is about 29 mm, and the thickness is about 1.6 mm.

[0043] The fixed-side antenna section 52 has a metal film or a coil, etc., and is formed on a part or the whole circumference of a virtual circle D1 (indicated by a dashed line). In this embodiment, the diameter of the circle D1 is set to, for example, about 48 mm. The fixed-side circuit section 53 is formed on the back side of the arrangement surface of the fixed-side antenna section 52 and outside the circle D1 (the shaded area surrounded by a dotted line), and is electrically connected to the fixed-side antenna section 52. In addition, the fixed-side substrate fixing section 54 is also formed outside the circle D1 of the fixed-side antenna section 52. In this embodiment, a through hole is arranged in the fixed-side substrate fixing section 54 in order to fix the fixed-side substrate 51 with, for example, a screw. In addition, a ground pattern is electrically connected to the fixed-side substrate fixing section 54. That is, in the fixed-side substrate 51, the fixed-side circuit section 53 and the fixed-side substrate fixing section 54 are arranged outside the fixed-side antenna section 52.

[0044] On the other hand, the rotation-side substrate 55 in Fig. 7(b) is configured to include a rotation-side antenna section 56 which is a second antenna that transmits signals by electromagnetic field coupling, a rotation-side circuit section 57 which is a second circuit section that converts signals, and a rotation-side substrate fixing section 58 which is a second fixing section for fixing the substrate. The shape of the rotation-side substrate 55 is a disk (a so-called doughnut shape) with a through hole disposed near the center. For example, the outer diameter of the rotation-side substrate 55 is about 64 mm, the diameter of the through hole is about 16 mm, and the thickness is about 1.6 mm.

[0045] The rotation-side antenna section 56 has a metal film or a coil, etc., and is formed on a part or the whole circumference of an imaginary circle D2 (indicated by a dashed line). Here, the diameter of the circle D2 is equal to the diameter of the circle D1 of the fixed-side substrate 51, and is, for example, about 48 mm in diameter. The rotation-side circuit section 57 is formed on the back side of the arrangement surface of the rotation-side antenna section 56 and on the center side of the circle D2 (the shaded area surrounded by a dotted line), and is electrically connected to the rotation-side antenna section 56. The rotation-side substrate fixing section 58 is also formed on the center side of the circle D2 of the rotation-side antenna section 56. In this embodiment, a through hole is arranged in the rotation-side substrate fixing section 58 so that the rotation-side substrate 55 is fixed, for example, with a screw. A ground pattern is electrically connected to the rotation-side substrate fixing section 58. That is, in the rotation-side substrate 55, the rotation-side circuit section 57 and the rotation-side substrate fixing section 58 are arranged on the inside (center side) of the rotation-side antenna section 56.

[0046] In this embodiment, both the fixed side substrate 51 and the rotating side substrate 55 are circular, but in view of the productivity of the substrates, they may be polygonal, for example rectangular. In Fig. 5, the fixed-side substrate 51 and the rotating-side substrate 55 are disposed opposite each other so that the fixed-side antenna section 52 and the rotating-side antenna section 56 face each other. The fixed-side substrate 51 is fixed to the substrate fixing member 64 by the fixed-side substrate fixing section 54, with the center of the circle D1 in Fig. 7(a) and the center of the plain bearing 62 being adjusted to approximately coincide. Similarly, the rotating-side substrate 55 is fixed to the shaft member 61 by the rotating-side substrate fixing section 58, with the center of the circle D2 in Fig. 7(b) and the center of the shaft member 61 being adjusted to approximately coincide.

[0047] In the non-contact communication module 20, the fixed-side circuit section 53 is disposed outside the fixed-side antenna section 52 on the fixed-side substrate 51, and the rotation-side circuit section 57 is disposed inside the rotation-side antenna section 56 on the rotation-side substrate 55. In a planar projection view, the fixed-side circuit section 53 and the rotation-side circuit section 57 are separated from each other via the fixed-side antenna section 52 and the rotation-side antenna section 56. With this configuration, a sufficient separation distance is maintained between the fixed-side circuit section 53 and the rotation-side circuit section 57, and the occurrence of electrical interference between these electrical circuits is suppressed. This realizes stable communication between the fixed-side substrate 51 and the rotation-side substrate 55.

[0048] <Positional relationship between the outer diameter of the rotating substrate and the fixed substrate fixing part> Here, the positional relationship between the outer diameter of the rotation-side substrate 55 and the fixed-side substrate fixing portion 54 will be described in detail with reference to Fig. 8. Fig. 8 is a plan view of the substrate fixing member, shaft member, fixed-side substrate, and rotation-side substrate in Fig. 5 in an assembled state.

[0049] As described above, the rotating-side substrate 55 is fixed to the shaft member 61 at the rotating-side substrate fixing portion 58, and the fixed-side substrate 51 is fixed to the substrate fixing member 64 at the fixed-side substrate fixing portion 54. Both the fixed-side substrate 51 and the fixed-side substrate fixing portion 54 are fixed by substrate fixing screws 59. The substrate fixing screws 59 are made of a conductive material such as metal, but may be made of an insulating material such as resin. Each substrate fixing screw 59 passes through each through hole of the fixed-side substrate fixing portion 54 and the rotating-side substrate fixing portion 58 shown in FIG. 7 and is fastened to the substrate fixing member 64 and the shaft member 61. With the configuration shown in FIG. 5, the rotating-side substrate 55 rotates relatively to the fixed-side substrate 51 in the direction of the arrow 5 around the pan rotation axis 3.

[0050] The rotation-side substrate outer shape 55R in FIG. 8 indicates the outermost diameter of the rotation-side substrate 55, and is, for example, about 64 mm in diameter. A virtual circle D51 (shown by a dashed line) is a circle with the pan rotation axis 3 as its center and the innermost position of the substrate fixing screw 59 that fixes the fixed-side substrate 51 from the pan rotation axis 3 as its radius. In this embodiment, the diameter of the circle D51 is, for example, about 80 mm. In order to prevent the rotation-side substrate 55 and the substrate fixing screw 59 from interfering with each other even when the rotation-side substrate 55 rotates around the pan rotation axis 3, the diameter relationship must be: diameter of the rotation-side substrate outer shape 55R < diameter of the circle D51. That is, even if the rotation-side substrate 55 is projected in the axial direction of the pan rotation axis 3, it must not overlap with the circle D51.

[0051] Fig. 9 is a plan view showing a case where the rotation side substrate 55 has a rectangular shape as another example of the embodiment shown in Fig. 8. Here, the rectangular rotation side substrate 55 will be described as 55S. When the rotation side base plate 55S rotates around the pan rotation axis 3, the rotation trajectory becomes a virtual circle D55 (shown by a dashed line). That is, a circle is drawn whose diameter is the length of the diagonal of the rotation side base plate 55S. To prevent interference with the base plate fixing screw 59 even when the rotation side base plate 55S is rotated, the diameter relationship needs to be: diameter of circle D55 < diameter of circle D51. That is, even if the rotation trajectory of the rotation side base plate 55S is projected in the axial direction of the pan rotation axis 3, it needs to not overlap with the circle D51.

[0052] In this embodiment, the size of the rotating-side substrate outer shape 55R is smaller than the size of the path drawn by the innermost position of the substrate fixing screw 59 that fixes the fixed-side substrate 51 from the rotation axis 3. As shown in FIG. 5, the substrate fixing screw 59 that fixes the rotating-side substrate 55 is located in the through hole of the fixed-side substrate 51. Therefore, the rotating-side substrate 55 does not interfere with not only the substrate fixing screw 59 that fixes the rotating-side substrate 55 but also the substrate fixing screw 59 that fixes the fixed-side substrate 51. Since the substrate fixing screw 59 does not exist in the space formed in the region where the fixed-side substrate 51 and the rotating-side substrate 55 face each other, the gap G (shown in FIG. 4) between the fixed-side substrate 51 and the rotating-side substrate 55 can be made as small as possible. Specifically, the dimensions of the surrounding members are set so that the size of the gap G is about 0.5 mm to about 2 mm.

[0053] <Transmission of video and control signals> 10 is a block diagram showing the control signal, video signal (image data), power supply, and ground wiring of the motorized pan head. First, the transmission of the control signal of the motorized pan head 100 will be described with reference to FIGS.

[0054] In this embodiment, the control signals include a signal for controlling the shooting settings of the camera and a signal for controlling the operation of the motor. In order to control the camera 6, a camera wiring 39 is connected from the swivel head board 38. In addition, in order to control the pan axis motor 4 and the tilt axis motor 44, a motor wiring 28 is connected from the swivel head board 38.

[0055] The flow of the control signal will be described. A serial communication control signal supplied from an external controller is input to the fixed base board 42 from a control signal input terminal (not shown) provided on the fixed base 1. The control signal is further input to the swivel head board 38 via the brush part wiring 43, the brush part 33, the conductor ring part 32, the conductor ring part wiring 37, and the head board wiring 27. When controlling the camera 6, a serial signal is sent from the swivel head board 38 to the camera 6 via the camera wiring 39. When controlling the motors 4, 44, a serial signal is sent from the swivel head board 38 to the pan axis motor 4 and the tilt axis motor 44 via the motor wiring 28.

[0056] Next, the transmission of a video signal from the motorized camera platform 100 will be described with reference to FIG. To transmit a video signal, the camera 6 and the rotation-side substrate 55 are connected by a rotation-side signal wiring 40. Moreover, the fixed-side substrate 51 and the fixed base substrate 42 are connected by a fixed-side signal wiring 41.

[0057] The flow of the video signal will be explained below. In addition to Fig. 10, the circuit section and antenna section in the internal circuit board configuration shown in Fig. 7 will be used for the explanation. For example, a video signal of SDI (Serial Digital Interface) output from the camera 6 is sent to the rotation-side circuit section 57 of the rotation-side substrate 55 via the rotation-side signal wiring 40. The video signal is converted into a voltage waveform for wireless transmission in the rotation-side circuit section 57, and the voltage waveform for wireless transmission is transmitted to the rotation-side antenna section 56. Then, the rotation-side antenna section 56 and the fixed-side antenna section 52 of the fixed-side substrate 51 are electromagnetically coupled, so that a voltage waveform is generated in the fixed-side antenna section 52. This voltage waveform is reconverted into a video signal in the fixed-side circuit section 53. The reconverted video signal passes through the fixed-side signal wiring 41, is converted into an optical signal or the like in the fixed base substrate 42, and is output from a video signal output terminal (not shown) to the outside of the motorized pan head 100.

[0058] Therefore, if the control signal input terminal and the video signal output terminal are connected to an external device of the motorized pan head 100 via a cable, it is possible to monitor the image of the subject in any direction captured by the camera 6 by remote control.

[0059] <Power supply> Next, the configuration of a power supply system to the motors 4, 44 in the motorized pan head 100, the camera 6, and the non-contact communication module 20 will be described with reference to Figures 2 and 10. First, the power (power supply) supply to the motors 4, 44 and the camera 6 will be described.

[0060] Power is supplied to the motors 4, 44 and the camera 6 via the swivel head board 38. In order to supply power to the pan axis motor 4 and the tilt axis motor 44, they are connected to the swivel head board 38 by motor wiring 28. In order to supply power to the camera 6, the camera 6 is connected to the swivel head board 38 by camera wiring 39.

[0061] The flow of power supply will be described. First, power is supplied from outside the motorized pan head 100 to the fixed base board 42 in the fixed base 1 through an external power input terminal (not shown). The supplied power is voltage converted as necessary and then supplied to the swivel head board 38 via the brush part wiring 43, the brush part 33, the conductor ring part 32, the conductor ring part wiring 37, and the head board wiring 27. The power supplied to the swivel head board 38 is supplied to the camera 6 via the camera wiring 39 and to the pan axis motor 4 and the tilt axis motor 44 via the motor wiring 28.

[0062] Next, the power supply to the non-contact communication module will be described. In order to supply power to the fixed-side substrate 51 and the rotation-side substrate 55 in the non-contact communication module 20, a fixed-side power supply wire 71 and a rotation-side power supply wire 70 are connected to each substrate 51, 55. The fixed-side signal wire 41 is a wire branched off from the brush portion wiring 43. The rotation-side signal wire 40 is a wire branched off from the conductor ring portion wiring 37.

[0063] The flow of power supply to each of the boards 51 and 55 will be described. As described above, power is supplied from the outside to the fixed base substrate 42 through the external power input terminal. The supplied power is converted in voltage as necessary and then transmitted to the brush part wiring 43. Power is then supplied from the branched fixed side signal wiring 41 to the fixed side substrate 51. Meanwhile, the power supplied to the brush part wiring 43 is transmitted to the conductor ring wiring 37. Furthermore, power is supplied to the rotation side substrate 55 via the rotation side power supply wiring 70 branched from the conductor ring wiring 37.

[0064] <Noise countermeasures> When power is supplied, electromagnetic noise is generated in the vicinity. There is concern that this electromagnetic noise will affect signal transmission between the fixed-side antenna unit 52 and the rotating-side antenna unit 56, degrading the quality of the video signal. In this embodiment, grounding measures and electromagnetic shielding measures are taken against the noise generated within the swivel head 2.

[0065] First, the grounding measures will be described with reference to FIG. In order to improve the noise resistance of the electromagnetically coupled fixed side substrate 51 and rotating side substrate 55, it is necessary to set the reference potential of both to the same potential, for example, ground (0V). The fixed-side substrate 51 is fixed in contact with the substrate fixing member 64 and is electrically connected to the substrate fixing member 64. The substrate fixing member 64 is connected to the fixed base 1 via a slip ring fixing member 66 as shown in Fig. 4 and is grounded. Therefore, the fixed-side substrate 51 is in a grounded state. Note that even when the fixed-side substrate 51 is fixed to the substrate fixing member 64 by a substrate fixing screw 59 made of an insulating material, the fixed-side substrate 51 is fixed in contact with the substrate fixing member 64 and is therefore in a grounded state.

[0066] The wiring for grounding the rotation-side substrate 55 will be described. The rotation-side ground wiring 73 in FIG. 10 is a wiring branched from the conductor ring wiring 37, and the fixed-side ground wiring 72 is a wiring branched from the brush portion wiring 43. The fixed-side ground wiring 72 and the rotation-side ground wiring 73 are electrically connected via the conductor ring portion 32 and the brush portion 33 of the slip ring 35. The fixed-side ground wiring 72 is connected to the substrate fixing member 64, which is grounded, and the rotation-side ground wiring 73 is connected to the shaft member 61. The rotation-side substrate 55 is fixed in contact with the shaft member 61 and is electrically connected to the shaft member 61. Therefore, the rotation-side substrate 55 is grounded via the shaft member 61, the rotation-side ground wiring 73, the fixed-side ground wiring 72, and the substrate fixing member 64.

[0067] As described above, the slip ring 35 functions as a connection means for electrically connecting the shaft member 61 and the board fixing member 64 via the fixed-side ground wiring 72 and the rotation-side ground wiring 73, and both the fixed-side board 51 and the rotation-side board 55 are at the same potential (here, in the ground state). With this configuration, even if noise occurs around the non-contact communication module, the reference potentials of the fixed-side board 51 and the rotation-side board 55 are kept at the same potential, so that signal transmission can be processed normally.

[0068] In this embodiment, against noise generated within the swivel head 2, in addition to the above-mentioned grounding measures, electromagnetic shielding measures are also taken. First, the shaft member 61 has a hollow structure, and the conductor ring wiring 37 passes through the hollow portion of the shaft member 61. This reduces the effect of noise generated from the conductor ring wiring 37 on the fixed side substrate 51 and the rotating side substrate 55.

[0069] In addition, an electromagnetic shield made of a material that blocks noise at communication frequencies is provided around the fixed-side substrate 51 and the rotating-side substrate 55. Specifically, as shown in Fig. 5, the fixed-side substrate 51 and the rotating-side substrate 55 are contained in a space surrounded by a wall portion 64a of a substrate fixing member 64 and a shield top plate 67, which act as an electromagnetic shield. This makes it possible to reduce the effects of noise generated within the swivel head 2.

[0070] 10, a rotation-side ground wiring 73 is connected to the shield top plate 67. This also grounds the shield top plate 67, improving noise resistance. In order to enhance the shielding effect, the board fixing member 64, the shield top plate 67, and the shaft member 61 are made of a highly conductive metal material (copper, aluminum, etc.).

[0071] With the above-described configuration, in each of the boards 51, 55 that constitute the non-contact communication module 20, the electrical circuit section and the antenna section are arranged on the same board, so that the electrical connection between the electrical circuit section and the antenna section is maintained stably even when subjected to vibrations, etc. In non-contact communication module 20, fixed-side circuit section 53 and rotation-side circuit section 57 are spaced apart from each other in a planar projection view, sandwiching fixed-side antenna section 52 and rotation-side antenna section 56. This prevents electrical interference between fixed-side circuit section 53 and rotation-side circuit section 57, realizing stable communication between fixed-side board 51 and rotation-side board 55.

[0072] In addition, by ensuring that the rotational trajectory of the outer shape of the rotating side base plate 55 and the base plate fixing screw 59 of the fixed side base plate 51 do not overlap when viewed in planar projection in the axial direction of the pan rotation axis 3, the gap between the base plates can be narrowed. As a result, the stability of communication in the rotatable non-contact communication module 20 can be improved, and the motorized camera head 100 using this can also provide high-quality images.

[0073] [Variations] Various modified examples of the non-contact communication module according to this embodiment will be described below. The various modified examples differ from this embodiment in that the configuration of the fixed-side substrate fixing part is different.

[0074] <Variation 1> Fig. 11 corresponds to Fig. 5 of this embodiment, and is an enlarged cross-sectional view of the periphery of the non-contact communication module according to Modification 1. Fig. 12 is an enlarged cross-sectional view of a part of the fixed-side substrate fixing portion in Fig. 11. The fixed-side substrate 51, which is the first substrate of the non-contact communication module 21, is fixed to the substrate fixing member 64 at a fixed-side substrate fixing portion 81 and is electrically connected thereto.

[0075] In the fixed-side substrate fixing portion 81, a through hole 82 is formed near the outer periphery of the fixed-side substrate 51. A metal film 83 electrically connected to the ground pattern of the fixed-side substrate 51 is provided on the inner wall surface of the through hole 82, and a substrate fixing screw 84 is inserted into the through hole 82 via the metal film 83, so that the fixed-side substrate 51 is fixed in a state of contact with the substrate fixing member 64.

[0076] In the first modification, the board fixing screw 84 is made of a conductive material such as metal, and is a so-called headless screw (hollow set) that does not have a screw head. Therefore, when the board fixing screw 84 is inserted through the board fixing member 64 and fastened, the upper part of the board fixing screw 84 is located below the surface of the fixed board 51. Preferably, as shown in Fig. 11, the upper part of the board fixing screw 84 is located below the surface of the fixed board 51, and a concave part 85 is formed in which the upper part of the board fixing screw 84 is slightly recessed from the surface of the fixed board 51. The board fixing screw 84 is not limited to a conductive material, and may be made of an insulating material such as resin.

[0077] In this way, since the upper part of the board fixing screw 84 does not protrude from the surface of the fixed-side board 51, the rotation-side board 55, which is the second board of the non-contact communication module 21, can be made larger in size than the rotation-side board 55 of this embodiment. As a result, the rotation-side board 55 is not restricted by the fixed-side board fixing part 81, and the portion of the rotation-side board 55 occupied by, for example, the rotation-side circuit part 57 can be secured to be large. At this time, as shown in Figs. 11 and 12, the rotation trajectory of the outer shape of the rotation-side board 55 and the board fixing screw 84 of the fixed-side board 51 may overlap in planar projection view (as shown in Figs. 11 and 12, the board fixing screw 84 may be included in the rotation-side board 55 in planar projection view). Even in such a case, since the rotation-side board 55 and the board fixing screw 84 do not interfere with each other, it is possible to make the gap between the fixed-side board 51 and the rotation-side board 55 as small as possible, thereby improving the communication quality.

[0078] In addition, in the first modified example, apart from the above-mentioned configuration of the non-contact communication module 21, the configuration is the same as that of the non-contact communication module 20 and the motorized camera head 100 described in the present embodiment, and similar effects are achieved.

[0079] <Variation 2> Fig. 13 corresponds to Fig. 5 of this embodiment, and is an enlarged cross-sectional view of the periphery of the non-contact communication module according to Modification 2. Fig. 14 is an enlarged cross-sectional view of a part of the fixed-side substrate fixing portion in Fig. 13. The fixed-side substrate 51, which is the first substrate of the non-contact communication module 22, is fixed to the substrate fixing member 64 at a fixed-side substrate fixing portion 91 and is electrically connected thereto.

[0080] In the fixed-side substrate fixing portion 91, a through hole 92 is formed near the outer periphery of the fixed-side substrate 51. The through hole 92 is countersunk (countersunk) so as to fit the shape of the screw head of a substrate fixing screw 94 described later. A metal film 93 electrically connected to the ground pattern of the fixed-side substrate 51 is provided on the inner wall surface of the through hole 92, and the substrate fixing screw 94 is inserted into the through hole 92 via the metal film 93, and the fixed-side substrate 51 is fixed in a state of contact with the substrate fixing member 64.

[0081] In the second modification, the board fixing screw 94 is made of a conductive material such as metal. When the board fixing screw 94 is inserted into the board fixing member 64, the tapered head portion of the board fixing screw 84 is fastened within the through hole 92, and the head portion is positioned below the surface of the fixed board 51. Preferably, as shown in Fig. 13, the head portion is positioned below the surface of the fixed board 51, and a concave portion 95 is formed in which the head portion of the board fixing screw 94 is slightly recessed from the surface of the fixed board 51. Note that the board fixing screw 94 is not limited to a conductive material, and may be made of an insulating material such as resin.

[0082] In this way, since the upper part of the board fixing screw 94 does not protrude from the surface of the fixed-side board 51, the size of the rotation-side board 55, which is the second board of the non-contact communication module 22, can be made larger than that of the rotation-side board 55 of this embodiment. As a result, the rotation-side board 55 is not restricted by the fixed-side board fixing part 91, and the portion of the rotation-side board 55 occupied by, for example, the rotation-side circuit part 57 can be secured to be large. At this time, as shown in Figs. 13 and 14, the rotation trajectory of the outer shape of the rotation-side board 55 and the board fixing screw 94 of the fixed-side board 51 may overlap in planar projection view (as shown in Figs. 13 and 14, the board fixing screw 94 may be included in the rotation-side board 55 in planar projection view). Even in such a case, since the rotation-side board 55 and the board fixing screw 94 do not interfere with each other, it is possible to make the gap between the fixed-side board 51 and the rotation-side board 55 as small as possible, thereby improving the communication quality.

[0083] In addition, in the second modification, apart from the above-mentioned configuration of the non-contact communication module 22, the configuration is the same as that of the non-contact communication module 20 and the motorized camera head 100 described in the present embodiment, and similar effects are achieved.

[0084] <Modification 3> Fig. 15 corresponds to Fig. 5 of this embodiment, and is an enlarged cross-sectional view of the periphery of the non-contact communication module according to Modification 3. Fig. 16 is an enlarged cross-sectional view of a part of the fixed-side substrate fixing portion in Fig. 15. The fixed-side substrate 51, which is the first substrate of the non-contact communication module 23, is fixed to the substrate fixing member 64 at a fixed-side substrate fixing portion 96 and is electrically connected thereto.

[0085] A conductive adhesive 97 is used in the fixed-side substrate fixing portion 96, and the conductive adhesive 97 is disposed on the back surface of the fixed-side substrate 51 to adhere and fix the fixed-side substrate 51 to the substrate fixing member 64. At this time, the ground pattern of the fixed-side substrate 51 is electrically connected to the substrate fixing member 64 via the conductive adhesive 97.

[0086] In the third modification, the fixed-side substrate 51 is fixed to the substrate fixing member 64 by the conductive adhesive 97 at the fixed-side substrate fixing portion 96 on the rear surface thereof. Therefore, no protruding portion is formed on the surface of the fixed-side substrate 51 at the fixed-side substrate fixing portion 96 (the surface facing the rotation-side substrate 55, which is the second substrate of the non-contact communication module 23). Therefore, the rotation-side substrate 55 is not restricted by the fixed-side substrate fixing portion 96, and the size of the rotation-side substrate 55 can be made larger than that of the rotation-side substrate 55 of this embodiment. This makes it possible to secure a large portion of the rotation-side substrate 55 occupied by, for example, the rotation-side circuit portion 57. At this time, as shown in Figs. 15 and 16, the rotation locus of the outer shape of the rotation-side substrate 55 and the fixed-side substrate fixing portion 96 of the fixed-side substrate 51 may overlap in planar projection (the fixed-side substrate fixing portion 96 may be included in the rotation-side substrate 55 in planar projection as shown in Figs. 15 and 16). Even in such a case, there is no interference between the rotating side substrate 55 and the fixed side substrate fixing portion 96, so it is possible to make the gap between the fixed side substrate 51 and the rotating side substrate 55 as small as possible, thereby improving communication quality.

[0087] In addition, in the third modification, apart from the above-mentioned configuration of the non-contact communication module 23, the configuration is the same as that of the non-contact communication module 20 and the motorized camera head 100 described in the present embodiment, and similar effects are achieved.

[0088] Although the present disclosure has been described in detail above based on the preferred embodiments and various modifications thereof, the present disclosure is not limited to these specific embodiments and modifications, and various forms within the scope of the gist of the present invention are also included in the present disclosure. In addition, some of the above-mentioned embodiments and modifications may be appropriately combined. For example, a similar 360° endless rotating element may be applied to the tilt section. In addition, an electric pan head may be used that does not use the slip ring 35 and uses only a non-contact communication module.

[0089] The disclosure of this embodiment includes the following configuration. (Configuration 1) A non-contact communication module comprising a first substrate and a second substrate arranged opposite to each other and rotating relative to each other, wherein a first antenna of the first substrate and a second antenna of the second substrate communicate with each other in a non-contact state by coupling of an electric field or a magnetic field, the first substrate has a first circuit portion disposed on an outer side of the first antenna and electrically connected to the first antenna; the second substrate includes a second circuit portion disposed inside the second antenna and electrically connected to the second antenna, The first circuit portion and the second circuit portion are spaced apart from each other with the first antenna and the second antenna interposed therebetween in a planar projection view. Contactless communication module. (Configuration 2) a first fixing portion of the first substrate is disposed on an outer side of the first antenna; the second substrate has a second fixing portion disposed on an inner side of the second antenna, The first fixed portion and the second fixed portion are spaced apart from each other with the first antenna and the second antenna interposed therebetween in a planar projection view. 2. The non-contact communication module according to claim 1. (Configuration 3) a rotation locus of an outline of the second substrate and the first fixing portion do not overlap in a planar projection view; 3. The non-contact communication module according to claim 2. (Configuration 4) The first fixing portion has a screw, The first substrate is fastened by the screws. 4. The non-contact communication module according to configuration 3. (Configuration 5) The first fixing portion has a headless screw, the first substrate is fastened by the headless screw, the headless screw is located below a surface of the first substrate; 3. The non-contact communication module according to claim 2. (Configuration 6) The first fixing portion has a through hole having a shape corresponding to a screw and a head portion of the screw, the first substrate is fastened by the screw inserted into the through hole, the screw is located below a surface of the first substrate; 3. The non-contact communication module according to claim 2. (Configuration 7) the first fixing portion has a conductive adhesive; the first substrate is fixed on a rear surface of the first substrate with the conductive adhesive; 3. The non-contact communication module according to claim 2. (Configuration 8) The first antenna and the second antenna at least partially overlap each other in a planar projection view. 2. The non-contact communication module according to claim 1. (Configuration 9) The first fixed portion and the second fixed portion are each electrically connected to ground. 3. The non-contact communication module according to claim 2. (Configuration 10) A fixed member and a shaft member are rotatable relative to each other, the fixing member is fixed to the first fixing portion and is electrically connected thereto; The shaft member is fixed to the second fixed portion and is electrically connected thereto. 3. The non-contact communication module according to claim 2. (Configuration 11) a connection means for electrically connecting the shaft member and the fixing member via a ground wiring; 11. The contactless communication module according to configuration 10. (Configuration 12) an electromagnetic shield made of a material that blocks noise at communication frequencies is provided around the first substrate and the second substrate; the ground wiring is connected to the electromagnetic shield and is electrically connected to the shaft member and the fixing member. 12. The non-contact communication module according to claim 11. (Configuration 13) the connecting means is a slip ring; The shaft member has a hollow portion, and wiring of the slip ring passes through the hollow portion. 13. The non-contact communication module according to claim 12. (Configuration 14) A power supply wiring for transmitting electric power is provided through the hollow portion, The shaft member is made of a material that blocks noise at communication frequencies generated from the power supply wiring. 14. The non-contact communication module according to claim 13. (Configuration 15) A base portion and A head portion that is rotatable relative to the base portion; A camera unit that is rotatable relative to the head unit; A non-contact communication module according to any one of configurations 1 to 14, having Electric head. [Explanation of symbols]

[0090] 100: Electric head 1: Fixed base 2: Swivel head 6: Camera 17: Camera unit 20: Non-contact communication module 35: Slip ring 51: Fixed side board 52: Fixed side antenna section 53: Fixed side circuit section 54: Fixed side board fixing section 55: Rotation side board 56: Rotation side antenna section 57: Rotation side circuit section 58: Rotating board fixing part 59: Board fixing screw 61: Shaft member 64: Board fixing member

Claims

1. A non-contact communication module comprising a first substrate and a second substrate arranged opposite to each other and rotating relative to each other, wherein a first antenna of the first substrate and a second antenna of the second substrate communicate with each other in a non-contact state by coupling of an electric field or a magnetic field, the first substrate has a first circuit portion disposed on an outer side of the first antenna and electrically connected to the first antenna; the second substrate includes a second circuit portion disposed on an inner side of the second antenna and electrically connected to the second antenna, The first circuit portion and the second circuit portion are spaced apart from each other with the first antenna and the second antenna interposed therebetween in a planar projection view. Contactless communication module.

2. a first fixing portion of the first substrate is disposed on an outer side of the first antenna, a second fixing portion of the second substrate is disposed on an inner side of the second antenna, The first fixed portion and the second fixed portion are spaced apart from each other with the first antenna and the second antenna interposed therebetween in a planar projection view. The non-contact communication module according to claim 1 .

3. a rotation locus of an outline of the second substrate and the first fixing portion do not overlap in a planar projection view; The non-contact communication module according to claim 2 .

4. The first fixing portion has a screw, The first substrate is fastened by the screws. The non-contact communication module according to claim 3 .

5. The first fixing portion has a headless screw, the first substrate is fastened by the headless screw, the headless screw is located below a surface of the first substrate; The non-contact communication module according to claim 2 .

6. The first fixing portion has a through hole having a shape corresponding to a screw and a screw head portion of the screw, the first substrate is fastened by the screw inserted into the through hole, the screw is located below a surface of the first substrate; The non-contact communication module according to claim 2 .

7. the first fixing portion has a conductive adhesive; the first substrate is fixed to the back surface of the first substrate by the conductive adhesive; The non-contact communication module according to claim 2 .

8. The first antenna and the second antenna at least partially overlap each other in a planar projection view. The non-contact communication module according to claim 1 .

9. The first fixed portion and the second fixed portion are each electrically connected to ground. The non-contact communication module according to claim 2 .

10. A fixed member and a shaft member are rotatable relative to each other, the fixing member is fixed to the first fixing portion and is electrically connected thereto; The shaft member is fixed to the second fixed portion and is electrically connected thereto. The non-contact communication module according to claim 2 .

11. a connection means for electrically connecting the shaft member and the fixing member via a ground wiring; The non-contact communication module according to claim 10.

12. an electromagnetic shield made of a material that blocks noise at communication frequencies is provided around the first substrate and the second substrate; the ground wiring is connected to the electromagnetic shield and is electrically connected to the shaft member and the fixing member. The non-contact communication module according to claim 11.

13. the connecting means is a slip ring; The shaft member has a hollow portion, and wiring of the slip ring passes through the hollow portion. The non-contact communication module according to claim 12.

14. A power supply wiring for transmitting electric power is provided through the hollow portion, The shaft member is made of a material that blocks noise at communication frequencies generated from the power supply wiring. The non-contact communication module according to claim 13.

15. A pedestal portion, A head portion that is rotatable relative to the base portion; A camera unit that is rotatable relative to the head unit; A non-contact communication module according to any one of claims 1 to 14, having Electric head.

Images