JP2014228853A - Image-capturing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an image-capturing device having a camera unit rotating centering on a pan rotation shaft and a cable fixed at one end to the camera unit, the image-capturing device being capable of shortening the cable and being advantageous for downsizing.SOLUTION: Provided is a dome-type monitoring camera 10 comprising a lower case 15, a pan rotation part 82 supported by the lower case 15 so as to be rotatable centering on a pan rotation shaft, a camera unit 22 for capturing the image of a subject and supported by the pan rotation part 82, and a cable 71 fixed at one end to the camera unit 22 and wound around part of the pan rotation part 82, the dome-type monitoring camera 10 being further provided with an R-shaped part 83 provided in the pan rotation part 82, with the cable 71 wound around it, and a convex-shaped part 84 provided in the pan rotation part 82, with the cable 71 not wound around it, the radius of curvature of the R-shaped part 83 being smaller than a distance from the pan rotation shaft of the pan rotation part 82 to the convex-shaped part 84.

Description

  The present invention relates to an imaging apparatus having a camera unit that rotates about a pan rotation axis.

  Currently, surveillance cameras installed in various places such as stores, hotels, banks, and stations are used to monitor suspicious persons. A pan-tilt type surveillance camera, which is an example of such a monitoring camera, has a pan rotation driving unit for rotating the imaging unit in the pan direction and a tilt rotation driving unit for rotating the imaging unit in the tilt direction. doing.

  Such a pan-tilt type surveillance camera can photograph the subject by changing the direction of the photographing unit to the photographing direction desired by the user by remote operation of the user. Furthermore, recently, a dome-type surveillance camera that is provided with a dome cover and can rotate the photographing unit in the pan direction and the tilt direction is increasing. Such a dome type surveillance camera is installed by being directly attached to or embedded in a ceiling or a wall.

  Patent Document 1 discloses a camera device with a pan head that can rotate a camera unit in a pan direction and a tilt direction. The camera device with a pan head includes a rotating unit provided with a camera unit, a fixing unit provided with a power switch, a cable having one end fixed to the rotating unit and the other end fixed to the fixing unit, Is provided. Further, the fixed portion is provided with a substantially circular inner peripheral wall, and a cable is wound around the inner peripheral wall.

Japanese Patent Application Laid-Open No. 2004-191412

  However, in the camera device with a pan / tilt head disclosed in Patent Document 1 described above, the inner peripheral wall around which the cable is wound is provided in the fixed portion, but this inner peripheral wall is formed in a substantially circular shape. As a result, this cable becomes longer, and the camera device with a pan head has become larger.

  The present invention has been made in view of the above points. That is, an imaging apparatus having a camera unit that rotates about a pan rotation axis and a cable that is fixed at one end to the camera unit, the cable can be shortened, and an imaging apparatus that is advantageous for downsizing is provided. It is to provide.

  In order to achieve the above object, an imaging apparatus according to the present invention includes a housing, a pan rotating unit supported by the housing so as to be rotatable about a pan rotation axis, and a pan rotating unit supported by the pan rotating unit. An imaging apparatus comprising: a camera unit that captures an image; and a cable having one end fixed to the camera unit and wound around a part of the pan rotating unit, the imaging unit being provided in the pan rotating unit, wherein the cable is wound An R-shaped portion that is provided on the pan rotating portion, and a convex-shaped portion that is not wound around the cable, and the radius of curvature of the R-shaped portion is from the pan rotating shaft to the convex-shaped portion. It is characterized by being smaller than the distance up to.

  According to the present invention, an imaging apparatus having a camera unit that rotates about a pan rotation axis and a cable that is fixed at one end to the camera unit, the cable can be shortened, and is advantageous for miniaturization. Can be provided.

It is an external appearance perspective view of a dome type surveillance camera in an embodiment of the present invention. It is the perspective view which showed the internal structure of the dome shape surveillance camera in embodiment of this invention. It is sectional drawing of the dome shape surveillance camera in embodiment of this invention. It is a fragmentary perspective view of the dome shape surveillance camera in the embodiment of the present invention. It is a top view of the dome type surveillance camera in the embodiment of the present invention. It is a notch top view of a dome shape surveillance camera in an embodiment of the present invention. It is the figure which showed the behavior of the cable of the dome shape surveillance camera in embodiment of this invention.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

  FIG. 1 is an external perspective view of a dome-type monitoring camera 10 as an imaging apparatus in the present embodiment. In FIG. 1, a dome cover 12 is a transparent or translucent plastic cover member. The dome cover 12 is provided with a dome portion formed in a hemispherical shape. The dome cover 12 is fixed to the upper case 14 with a screw (not shown) or the like.

  The upper case 14 is fixed to the lower case 15 with the dome cover 12 attached thereto. The upper case 14 is attached to the lower case 15. Further, the lower case 15 supports and fixes a base portion 61 and a main electric board 62, which will be described later, with a boss (not shown) or the like. Furthermore, the lower case 15 is provided with a mounting structure (not shown) for fixing to the installation place such as a ceiling or a wall.

  Note that the lower case 15 in the present embodiment corresponds to a housing. In addition, the fixed portion in the present embodiment includes the lower case 15, the base portion 61, the main electric board 62, and the like.

  Next, FIG. 2 is a diagram showing the internal structure of the dome-type surveillance camera 10 in the present embodiment, and is a perspective view of the dome-type surveillance camera 10 with the dome cover 12 and the upper case 14 removed. In FIG. 2, the lens unit 21 includes an imaging optical system. The lens unit 21 is covered with a dome cover 12 and shoots the outside world (subject) from the inside of the dome type surveillance camera 10 to generate a video signal.

  The lens unit 21 includes a lens barrel, a fixed lens fixed to the lens barrel, a movable lens for performing zoom adjustment and focus adjustment, a motor for moving the movable lens, an imaging element such as a CMOS sensor, and the imaging It is composed of an electric board on which elements are mounted.

  Note that these fixed lens, movable lens, motor, image sensor, and electric substrate are not shown. In addition, the video signal generated by the lens unit 21 is transmitted to the main electric board 62 of the fixed portion by the cable 23.

  The camera unit 22 fixes the lens unit 21. The camera unit 22 is disposed inside the dome cover 12. (That is, the camera unit 22 is covered by the dome cover 12.) The camera unit 22 has a spherical portion on the outer surface thereof. The camera unit 22 can change the shooting direction of the lens unit 21 (the direction of the optical axis of the imaging optical system of the lens unit 21) to the tilt direction by rotating in the tilt direction.

  Note that the camera unit 22 in the present embodiment is supported so as to be rotatable in the tilt direction, and corresponds to a tilt rotation unit that supports the lens unit 21.

  The cable holder 44 on the pan cover 41 side is for holding the end of the cable 23 on the camera unit 22 side. The cable holding portion 68 on the base portion 61 side is for holding the end portion of the cable 23 on the main electric board 62 side. The pan cover 41 and the base portion 61 will be described later.

  Next, FIG. 3 is a cross-sectional view of the dome type surveillance camera 10 in the present embodiment. In FIG. 3, the dome cover 12 is provided with an attachment portion for attachment to the upper case 14. And this attachment part is fixed to the upper case 14 with a screw etc. which are not illustrated. Thereby, the dome cover 12 is fixed to the upper case 14.

  The camera unit 22 is provided with a tilt rotation shaft 28. The camera unit 22 can rotate around the tilt rotation axis 28. Further, the pan turntable A45 supports the camera unit 22 via a bearing 56 and a bearing 57 (not shown in FIG. 3) so as to be rotatable about the tilt rotation shaft 28 in the tilt direction. The pan turntable A45 is fixed to the pan turntable B49.

  A pan rotation shaft 67 is provided on the pan turntable B49. Further, the pan turntable B49 is attached to the base portion 61 by the E ring 50 so as to be rotatable in the pan direction around the pan rotation shaft 67 (axis P shown in FIG. 3). The base portion 61 supports the pan turntable B49 so as to be rotatable in the pan direction. The base portion 61 is fixed to the lower case 15 with a screw (not shown) or the like.

  Here, the camera unit 22 in the present embodiment can rotate in the tilt direction within a range of 0 degrees to 90 degrees, for example.

  At this time, the dome-type surveillance camera 10 is installed in an installation site such as a ceiling, and the tilt photographing direction when the optical axis of the lens unit 21 is oriented in the horizontal direction (the optical axis of the lens unit 21 around the tilt rotation axis 28). Orientation) is 0 degree. Similarly, the tilt shooting direction when the optical axis of the lens unit 21 faces the zenith direction of the dome cover 12 is 90 degrees.

  In addition, the camera unit 22 in the present embodiment can rotate in the pan direction in a range of −180 degrees to +180 degrees, for example.

  In the present embodiment, the tilt rotation axis 28 and the pan rotation axis 67 are orthogonal to each other. The dome portion of the dome cover 12 forms a spherical surface centered on the intersection of the tilt rotation shaft 28 and the pan rotation shaft 67, and the spherical surface portion of the camera unit 22 also forms a spherical surface centered on this intersection point. That is, the dome part of the dome cover 12 and the spherical part of the camera unit 22 are concentric.

  The main electric board 62 receives the video signal output from the lens unit 21 via the cable 23. Then, the main electric board 62 processes the received video signal and performs compression coding processing on the processed video signal. Further, the main electrical board 62 distributes the video signal subjected to the compression encoding process to an external camera control device via, for example, a network.

  The main electric board 62 controls a tilt motor 55, a pan motor 66, and the like which will be described later so that the camera unit 22 is rotated in the pan direction and the tilt direction. In addition, although the main electric board | substrate 62 in this embodiment shall be comprised with one board | substrate, it is not restricted to this. For example, the main electric board 62 may be constituted by two or more boards.

  A tilt gear B53, a tilt worm 54, and a tilt motor 55 are disposed in a pan rotating unit including the pan rotating table A45 and the pan rotating table B49. The tilt gear B53 and the tilt motor 55 are attached to the pan turntable A45 and the pan turntable B49 with a sheet metal (not shown).

  Further, the tilt motor 55 is connected to the main electric board 62 by a cable (not shown). The tilt shooting direction of the camera unit 22 can be changed by driving the tilt motor 55. Therefore, the tilt motor 55 in the present embodiment corresponds to a tilt rotation driving unit as a power source for rotating the camera unit 22 in the tilt direction.

  The base portion 61 is provided with a pan gear B 64, a pan worm 65, and a pan motor 66. A pan worm 65 is fixed to the motor shaft of the pan motor 66 by press fitting or the like. The pan motor 66 rotates the pan worm 65. The rotated pan worm 65 rotates the helical gear portion of the pan gear B64.

  The pan gear B64 is a reduction gear composed of a helical gear portion and a spur gear portion, and transmits the power of the pan motor 66 to the pan gear A63. The pan gear A63 is a gear that is formed on the pan turntable B49 and rotates about the pan rotation shaft 67.

  The pan motor 66 is connected to the main electric board 62 by a cable (not shown). Then, by driving the pan motor 66, the pan photographing direction of the camera unit 22 (direction around the pan rotation axis 67) can be changed. Further, the pan motor 66 and the pan gear B64 are attached to the base portion 61 by sheet metal (not shown) or the like.

  Next, FIG. 4 is a partial perspective view of the dome type surveillance camera 10 in the present embodiment, and more specifically, a partial perspective view around the camera unit 22. A tilt worm 54 is fixed to the motor shaft (rotary shaft) of the tilt motor 55 in FIG. 4 by press fitting or the like. The tilt motor 55 rotates the tilt worm 54 attached to the motor shaft.

  The rotated tilt worm 54 rotates the helical gear portion of the tilt gear B53. Here, the tilt gear B53 is a reduction gear composed of a helical gear portion and a spur gear portion, and transmits the power of the tilt motor 55 to the tilt gear A52. The tilt gear A52 is a gear that is fixed to the camera unit 22 and rotates around the tilt rotation shaft 28 (axis T shown in FIG. 4).

  Note that the tilt worm 54 in this embodiment corresponds to a worm gear. Further, the spur gear portion of the tilt gear B53 in the present embodiment corresponds to a small gear provided on the helical gear. The tilt gear A52 in the present embodiment corresponds to a large gear that meshes with the spur gear of the tilt gear B53.

  Next, FIG. 5 is a top view of the dome-type monitoring camera 10 in the present embodiment, and is a top view of the dome-type monitoring camera 10 with the dome cover 12 and the upper case 14 removed. The pan cover 41 in FIG. 5 includes an R-shaped portion 42 and a convex-shaped portion 43. The R shape of the R shape portion 42 is such that the center of R (center of curvature) is on the pan rotation shaft 67. The R-shaped portion 42 is wound around the cable 23 when the pan rotating portion rotates in the pan direction.

  The convex portion 43 is a circle formed by the R-shaped portion 42 (a circle having the same radius of curvature as the R-shaped portion 42 and centered on the pan rotating shaft 67) when viewed from the direction along the pan rotating shaft 67. It is a part that protrudes outward.

  And even if a bread | pan rotation part rotates to a pan direction, the cable 23 does not wind around the convex-shaped part 43 (the cable 23 does not contact). Further, the convex portion 43 is disposed on the side surface opposite to the side surface on which the cable 23 is fixed, of the side surfaces on both sides of the camera unit 22.

The convex portion 43 in the present embodiment is configured symmetrically with respect to the tilt rotation axis 28 when viewed from the direction along the pan rotation axis 67. More specifically, the convex portion 43 is configured to be plane-symmetric with respect to the plane S formed by the tilt rotation axis 28 and the pan rotation axis 67. (The convex portion 43 is plane-symmetric with the plane formed by the tilt rotation axis 28 and the pan rotation axis 67 as the symmetry plane.)
Next, FIG. 6 is a cutaway top view of the dome-type surveillance camera 10 in the present embodiment, in which some parts are omitted or cut away to show the internal structure of the pan cover 41. As shown in FIG. 6, a tilt rotation driving unit and the like are arranged inside the convex portion 43.

  Here, the tilt rotation driving unit includes a tilt motor 55, a tilt worm 54, a tilt gear A52, a tilt gear B53, and the like. Further, the tilt rotation drive unit is configured by a first speed reduction unit composed of a tilt worm 54 and a helical gear of a tilt gear B53, and a second configuration composed of a spur gear unit of the tilt gear B53 and a tilt gear A52. A two-stage reduction structure comprising a reduction part.

  By adopting such a two-stage deceleration configuration, as shown in the drawing, tilt rotation is performed in an axial direction (direction of the axis A shown in FIG. 6) orthogonal to the tilt rotation axis 28 and orthogonal to the pan rotation axis 67. A drive part can be reduced in size. Specifically, the tilt rotation drive unit is configured to be smaller than the pan cover 41 in the direction of the axis A. Further, the tilt rotation driving unit is configured to be smaller than the camera unit 22 in the direction of the axis A.

  Note that the axis A shown in FIG. 6 corresponds to the axis A shown in each of FIGS. 3 and 5.

  Next, FIG. 7 shows that, in this embodiment, the cable holding part 44 located at the rotation terminal part X rotates 360 ° clockwise and rotates again when the pan rotation part 82 rotates in the pan direction. It is the figure which showed the behavior of the cable 23 until it locates in the part X.

  In this embodiment, both ends of the rotation range in which the pan rotation unit 82 rotates in the pan direction are limited. Specifically, both ends of this rotation range are the rotation end portion X when the pan rotation unit 82 rotates in the pan direction and counterclockwise, and the rotation when the pan rotation unit 82 rotates in the pan direction and clockwise. And end portion X. Note that “clockwise” in the present embodiment means clockwise when viewed from the upper surface of the dome-type monitoring camera 10.

  The upper diagram in FIG. 7 is a schematic diagram showing the state inside the camera when the pan rotation unit 82 rotates CW (Clock Wise) around the pan rotation axis 67. 7A to 7E are diagrams showing the behavior of the cable 23 inside the dome-type surveillance camera 10 when the pan rotation unit 82 rotates in the pan direction and clockwise.

  In FIG. 7A, a cable 71 indicates a state of the cable 23 when the pan photographing direction is in the direction of −180 degrees. That is, in the state of FIG. 7A, the cable holding portion 44 is positioned at the rotation end portion X, and the cable 71 at this time is a part of the side wall (outer periphery) of the substantially cylindrical portion of the pan rotation portion 82. Since a part of the cable 71 is wound around the R-shaped portion 83, there is little slack.

  When the pan rotating unit 82 rotates in the pan direction and clockwise from the state of FIG. 7A, as shown in FIGS. 7B, 7C, 7D and 7E, the cable 23 is It rotates while forming a U-shaped deflection.

  In FIG. 7B, a cable 72 represents the state of the cable 23 when the pan photographing direction is CW rotated from −180 degrees to −90 degrees. That is, FIG. 7B shows the state of the dome-type monitoring camera 10 in a state in which the pan rotation unit 82 is rotated 90 degrees from the rotation end portion X in the pan direction and clockwise.

  In FIG. 7C, a cable 73 represents a state of the cable 23 when the pan photographing direction is CW rotated from −90 degrees to 0 degrees. That is, FIG. 7C shows a state of the dome-type monitoring camera 10 in a state in which the pan rotation unit 82 is rotated 180 degrees from the rotation end portion X in the pan direction and clockwise.

  In addition, in the state of FIG.7 (c), the bending of the cable 73 becomes the largest. Further, when the pan rotation of the pan rotating portion 82 is rotated in the clockwise direction, the cable 23 gradually becomes less bent while being wound around the R-shaped portion 83.

  Next, in FIG. 7D, a cable 74 represents a state of the cable 23 when the pan photographing direction is CW rotated from 0 degree to +90 degrees. That is, FIG. 7D shows a state of the dome-type monitoring camera 10 in a state in which the pan rotation unit 82 is rotated 270 degrees in the pan direction and clockwise from the rotation end portion X.

  In FIG. 7E, the cable 75 represents the state of the cable 23 when the pan photographing direction is CW rotated from +90 degrees to +180 degrees. That is, FIG. 7E shows the state of the dome-type monitoring camera 10 in a state in which the pan rotation unit 82 is rotated 360 degrees from the rotation end portion X in the pan direction and clockwise.

  In the state shown in FIG. 7E, the cable 75 is connected to the R-shaped portion 83 which is a part of the side wall (outer periphery) of the substantially cylindrical portion of the pan rotating portion 82, as in the state shown in FIG. Since a part of is wound, there is little slack.

  7 is a schematic view showing a state inside the camera when the pan rotation unit 82 rotates CCW (Counter Clock Wise) around the pan rotation axis 67. The lower diagram in FIG. That is, FIGS. 7F to 7J are diagrams illustrating the behavior of the cable 23 inside the dome-type monitoring camera 10 when the pan rotating unit 82 rotates in the pan direction and counterclockwise.

  In FIG. 7F, the cable 80 represents the state of the cable 23 when the pan shooting direction is +180 degrees. That is, in the state of FIG. 7 (f), the cable holding portion 44 is positioned at the rotation end portion X, and the cable 76 at this time has a part of the cable 76 on the R-shaped portion 83 of the pan rotation portion 82. Since it is wound, it is in a state with little slack.

  Then, when the pan rotating portion 82 rotates in the pan direction and counterclockwise from the state of FIG. 7 (f), as shown in FIGS. 7 (g), (h), (i), and (j), the cable 23 is , Rotating while forming a U-shaped deflection.

  In FIG. 7G, the cable 77 represents the state of the cable 23 when the pan photographing direction is CCW rotated from +180 degrees to +90 degrees. That is, FIG. 7G shows a state of the dome-type monitoring camera 10 in a state in which the pan rotation unit 82 is rotated 90 degrees from the rotation end portion X in the pan direction and counterclockwise.

  In FIG. 7H, the cable 78 represents the state of the cable 23 when the pan photographing direction is CCW rotated from +90 degrees to 0 degrees. That is, FIG. 7H shows the state of the dome-type monitoring camera 10 in a state in which the pan rotation unit 82 is rotated 180 degrees from the rotation end portion X in the pan direction and counterclockwise.

  In addition, in the state of FIG.7 (h), the bending of the cable 78 becomes the largest. Further, when the pan rotating portion 82 rotates in the pan direction and counterclockwise, the cable 23 gradually becomes less bent while being wound around the R-shaped portion 83.

  Next, in FIG. 7I, the cable 79 represents the state of the cable 23 when the pan photographing direction is CCW rotated from 0 degree to -90 degrees. That is, FIG. 7I shows the state of the dome-type monitoring camera 10 in a state in which the pan rotation unit 82 is rotated 270 degrees in the pan direction and counterclockwise from the rotation end portion X.

  In FIG. 7 (j), the cable 80 shows the state of the cable 23 when the pan photographing direction is CCW rotated from −90 degrees to −180 degrees. That is, FIG. 7J shows the state of the dome-type monitoring camera 10 in a state in which the pan rotation unit 82 is rotated 360 degrees from the rotation end portion X in the pan direction and counterclockwise.

  As shown in FIG. 7, the convex portion 84 is disposed in the pan rotation unit 82 and rotates in the pan direction. Further, the cable 23 is wound around the R-shaped portion 83 when, for example, the pan photographing direction is −180 degrees and +180 degrees. On the other hand, the cable 23 is not wound around the convex portion 84 regardless of the pan photographing direction.

  When the pan shooting direction is −180 degrees and +180 degrees, between one end of the cable 23 fixed to the camera unit 22 side and the other end of the cable 23 fixed to the main electric board 62 side, A pan rotation shaft 67 is arranged. That is, the pan rotation shaft 67 is located on a straight line connecting the one end and the other end.

  As described above, in this embodiment, the convex portion 43 where the cable 23 is not wound and the R-shaped portion 42 around which the cable 23 is wound are provided in the pan rotating portion. Further, the radius of curvature of the R-shaped portion 42 is configured to be smaller than the distance from the pan rotation shaft 67 to the convex-shaped portion 43.

  Thereby, since the length of the cable 23 can be shortened, the noise of the signal transmitted by the cable 23 can be reduced, the cost of the cable 23 can be reduced, and the cable 23 is excessive. Can be prevented from bending.

  In addition, since the radius of curvature of the R-shaped portion 42 is reduced, the area required for the cable 23 to move outside the R-shaped portion 42 is reduced, and further, the outer shape of the dome-type surveillance camera 10 is reduced. Can do.

  Further, in this embodiment, an arrangement region for arranging components such as a tilt rotation driving unit is provided inside the convex portion 43. Thereby, since the necessity of arrange | positioning components inside the R-shaped part 42 can be reduced, the curvature radius of the R-shaped part 42 can be made smaller.

  In the present embodiment, the convex portion 43 is configured such that the plane S formed by the tilt rotation shaft 28 and the pan rotation shaft 67 is the target surface.

  Accordingly, in FIG. 7, as shown by the cable 72 and the cable 77, the cable 73 and the cable 78, and the cable 74 and the cable 79, the behavior of the cable 23 is that the rotation of the pan rotating part 82 is clockwise. It is symmetric regardless of whether it is counterclockwise. More specifically, the behavior of the cable 23 is line symmetric with respect to a straight line connecting the other end of the cable 23 fixed to the main electric board 62 side and the pan rotation shaft 67 as an axis of symmetry.

  If the behavior of the cable 23 is asymmetric depending on the rotation direction of the pan rotation unit 82, the behavior of the cable 23 becomes more complicated.

  However, in this embodiment, the load applied to the cable 23 can be made uniform by making the behavior of the cable 23 symmetric regardless of the rotation direction of the pan rotation unit 82. Further, by making the load applied to the cable 23 uniform, the durability performance against bending of the cable 23 can be improved, and further, the pan-tilt durability performance of the dome type surveillance camera 10 can be improved.

  In the present embodiment, the dome type surveillance camera 10 is mounted with the tilt motor 55 and the pan motor 66, but is not limited thereto. For example, the dome type surveillance camera 10 may be configured so that the camera unit 22 can be manually rotated in the pan direction and the tilt direction without mounting the tilt motor 55 and the pan motor 66.

  In the present embodiment, the tilt rotation driving unit is disposed in the arrangement region inside the convex portion 84, but the present invention is not limited to this. You may comprise so that other components (pan rotation drive part etc.) may be arrange | positioned in the arrangement | positioning area | region inside the convex-shaped part 84. FIG.

  As mentioned above, although preferable embodiment of this invention was described, this invention is not limited only to this embodiment, A various deformation | transformation and change are possible within the range of the summary.

DESCRIPTION OF SYMBOLS 10 Dome type surveillance camera 15 Lower case 22 Camera unit 71 Cable 82 Pan rotation part 83 R shape part 84 Convex shape part

Claims (11)

A housing,
A pan rotating unit supported by the housing so as to be rotatable around a pan rotation axis;
A camera unit that is supported by the pan rotation unit and images a subject;
One end is fixed to the camera unit, and a cable wound around a part of the pan rotating unit,
An imaging device comprising:
An R-shaped part provided in the pan rotating part and around which the cable is wound;
Protruding portion provided in the pan rotating portion, the cable is not wound,
Further comprising
An imaging apparatus, wherein a radius of curvature of the R-shaped portion is smaller than a distance from the pan rotation axis to the convex-shaped portion.   The image pickup apparatus according to claim 1, wherein the convex portion is provided on an opposite side of one end of a cable fixed to the camera unit across the pan rotation shaft.   The imaging apparatus according to claim 1, wherein an arrangement region for arranging components is provided in the convex portion. A tilt rotation unit supported by the pan rotation unit so as to be rotatable about a tilt rotation axis, and supporting the camera unit;
A tilt rotation drive unit as a power source for rotating the tilt rotation unit;
Further comprising
The imaging apparatus according to claim 3, wherein the tilt rotation driving unit is arranged in the arrangement region.   5. The imaging according to claim 4, wherein a length of the tilt rotation driving unit is smaller than a length of the R-shaped portion in a direction of an axis orthogonal to each of the pan rotation axis and the tilt rotation axis. apparatus.   The imaging apparatus according to claim 4, wherein the tilt rotation driving unit overlaps the tilt rotation unit when viewed from the direction of the tilt rotation axis. The tilt rotation drive unit includes a motor as the power source, a worm gear attached to a rotation shaft of the motor, a gear meshing with the worm gear, and a small gear provided on the gear,
The imaging apparatus according to claim 4, wherein the tilt rotation unit is provided with a large gear that meshes with the small gear.   The imaging apparatus according to claim 4, wherein the convex portion is symmetrical with respect to the tilt rotation axis.   8. The imaging apparatus according to claim 4, wherein the convex portion has a plane symmetry in which a plane formed by the pan rotation axis and the tilt rotation axis is a plane of symmetry.   The imaging apparatus according to claim 1, wherein the convex portion does not contact the cable regardless of a direction of the pan rotating portion.   The behavior of the cable when the pan rotation unit rotates clockwise and the behavior of the cable when the pan rotation unit rotates counterclockwise are targets. The imaging device according to any one of the above.

Images