JP4504235B2 - Camera device - Google Patents

Description

The present invention relates to a camera device such as a surveillance camera capable of adjusting a photographing range or a photographing angle by remote control.

In general, the monitoring camera is configured as a pair with an image recording unit, and is configured to take an image of a predetermined space, sample it at an appropriate timing, and record it with the image recording unit.

The object to be photographed is limited to a specific object, or is configured to photograph by selecting a predetermined direction around the camera body at a predetermined angle.

In a camera device configured to selectively photograph the surroundings where the camera body is installed, the camera body is configured to rotate 360 degrees horizontally and further rotate 180 degrees vertically, for example. At the same time, the focus and zoom can be adjusted.

That is, such a camera device is normally supported by a base so as to be rotatable in horizontal and vertical directions via a bracket, and the shooting direction and angle are adjusted by driving means provided in the horizontal and vertical directions, respectively. Is done.

The driving means in the horizontal and vertical directions each include a motor and drive the camera body by its rotation, and an electric wire for supplying power from the base side to the motor is required.

As described above, in the camera device capable of adjusting the shooting direction, angle, and the like, it is necessary to provide an electric wire to supply power to the driving means. Further, a predetermined electric wire is also used for an image signal taken by the camera body. It is necessary to take in to the base side through.

In this way, it is necessary to provide several types of electric wires, but the electric wires that supply electric power to the motor must be wired so that the horizontal and vertical driving of the camera body can be performed without any trouble. An electric wire for capturing a signal needs to be resistant to interference because an image signal has a wide frequency band and is easily affected by noise.

For example, Patent Document 1 discloses an example of wiring to the driving unit.
JP 2004-15223 A

As described above, as a camera device capable of adjusting the shooting direction, angle, etc., the power supply wiring to the driving means in the horizontal and vertical directions operates smoothly without affecting the operation of the driving means. In addition, since it is necessary to transmit an image signal captured by the camera body while maintaining a predetermined quality, an appropriate wiring structure is required.

The present invention has been made in response to the above-described points, and is a camera that can appropriately supply power to the driving means and can transmit a captured image signal without being affected by noise. An object is to provide an apparatus.

A camera device according to the present invention includes a base, a circuit board provided on the base, and a bracket that is rotatably disposed in the horizontal direction with respect to the base via a hollow horizontal rotation shaft. A camera body including an image pickup device and an optical system that forms an optical image on the image pickup device, and is arranged on the bracket so as to be rotatable in a direction crossing the horizontal direction via a vertical rotation shaft. A horizontal driving means including a motor provided on a base and rotating the bracket in the horizontal direction; a vertical driving means including a motor provided on the bracket and rotating the camera body in the vertical direction; and the camera. A circuit board provided in the main body and electrically coupled to the imaging device and the optical system, and a circuit board of the base passing through the horizontal rotation axis and pulled along the vertical rotation axis. Turned of the camera body A first bundle of micro coaxial cables connected to the board and a circuit board of the base are routed through the horizontal rotation shaft and connected to the motor of the vertical driving means. And a bundle of two micro coaxial cables.

A camera device according to the present invention is disposed so as to be rotatable in a horizontal direction around a base, a circuit board provided on the base, and a hollow horizontal rotation shaft provided on the base. with a bracket having a side plate portion, is disposed rotatably in a direction around a vertical rotation axis intersecting the horizontal direction provided in the side plate portion of the bracket, the optical image on the imaging device and the imaging device A camera body including an optical system for forming an image; a horizontal driving means provided on the base ; and a motor for rotating the bracket in a horizontal direction around the horizontal rotation axis; and provided on the bracket . Vertical driving means including a motor for rotating the camera body in a vertical direction around the vertical rotation axis; a circuit board provided in the camera body and electrically coupled to the imaging element and the optical system; , Circuit base of the base From being routed through the inside of shaft the horizontal time, a first portion which is held by the first holding portion provided on the side plate portion below the shaft the vertical time, the vertical It is held by the second holding part provided in the camera body at a position above the rotation axis and closer to the vertical rotation axis than the first holding part, and is pulled along the vertical rotation axis. wound and a second portion connected to the circuit board of the camera body, the first, is disposed between the second holding portion, with respect to the side plate portion with the rotation of the camera body A first bundle of micro coaxial cables having a third portion whose position changes; and a vertical driving means that is routed from the circuit board of the base and passed through the horizontal rotation shaft. And a bundle of second micro coaxial cables connected to the motor.

Hereinafter, an embodiment of a camera device according to the present invention will be described in detail with reference to the drawings.

FIG. 1 is a perspective view showing an embodiment of a camera apparatus 100 according to the present invention.
FIG. 3 is a partially exploded perspective view of the camera device 100 shown in FIG.
FIG.

In FIG. 1, a camera device 100 includes a camera body 101, a bracket 102 that supports the camera body 101 so as to be rotatable in a vertical direction, and a base 103 that supports the bracket 102 so as to be rotatable in a horizontal direction. Is done.

The camera body 101 is a lens 1 for forming an optical image on an image pickup device (not shown) inside.
04 includes an optical system. Furthermore, the camera body 101 supplies a drive signal to the image sensor, and further extracts a captured image picked up by the image sensor and processes it to construct an image signal, zoom, focus, aperture, etc. A circuit board 105 on which a circuit for controlling the optical system is mounted is provided on the bottom side of the optical system.

The camera body 101 is rotatably attached to the bracket 102 by a vertical rotation shaft 106 provided so as to intersect the optical axis of the lens 104 in the horizontal direction.

The bracket 102 has a bottom plate portion 107 disposed so as to face the base 103 and a pair of side plate portions 108 and 109 provided so as to stand upright from the bottom plate portion 107. The vertical rotation shaft 106 is passed through the end portions of the side plate portions 108 and 109 so as to be rotatable.

The vertical rotation shaft 106 is coupled to a driving mechanism constituting vertical driving means at an end portion on the side plate portion 109 side. The drive mechanism includes a gear 110 coupled to the vertical rotation shaft 106, a vertical drive motor 111, and a gear group 11 for transmitting the rotation of the vertical drive motor 111 to the gear 110.
2

A toothed pulley 113 is provided on the surface of the base 103 via a hollow cylindrical shaft 114.
3 is rotatably attached. The toothed pulley 113 is arranged around the cylindrical shaft 114,
A coupling portion 115 coupled to the bracket bottom plate portion 107 is provided, and coupled to the bracket bottom plate portion 107 by the coupling portion 115 to transmit the rotational force in the horizontal direction to the bracket 102.

A horizontal driving motor 116 for horizontal driving is attached to the bottom surface side of the base 103.
The shaft of the horizontal drive motor 116 is configured such that its tip protrudes from the surface of the base 103, and a toothed pulley 117 is fixed.

A timing belt 118 is suspended between the toothed pulley 117 and the toothed pulley 113, and the rotation of the horizontal drive motor 116 is transmitted to the toothed pulley 113.

A circuit board 119 is provided on the bottom surface side of the base 103. Power is transmitted from the circuit board 119 to the vertical drive motor 111 by the electric wire 120, and the horizontal drive motor 11.
Power is transmitted to 6 by an electric wire (not shown), and the drive motors 111 and 116 are driven.

Furthermore, the circuit board 105 of the camera main body 101 and the circuit board 119 of the base 103 are also coupled by the electric wires 121 to control the optical system, drive the image sensor, and capture the captured image signal.

The electric wires 120 and 121 will be described in detail below with reference to FIGS. 4 is a side view of the camera device 100 as viewed from the side plate portion 108 side of the bracket 102, FIG. 5 is a plan view of the camera device 100 as viewed from above, and FIG.
6 is a side view of the bracket 102 as viewed from the side plate portion 109 side.

Each of the electric wires 120 and 121 is formed by bundling a plurality of ultrafine coaxial cables. That is, each drive motor 111 and 116 is composed of a stepping motor,
For example, each is driven by an electric wire bundled with four micro coaxial cables. The electric wire 121 is configured as a bundle of, for example, 30 micro coaxial cables for controlling an optical system such as a zoom and a focus stop, driving an image sensor, and capturing a captured image signal.

The circuit board 119 of the base 103 has an opening 122 at the center thereof, and the electric wire 1
20 and 121 are bundled together from the circuit board 119 of the base 103 through the opening 122 into the cylindrical shaft 114 and further through the bottom plate 107 of the bracket 102,
It is drawn from the surface to the side plate portion 108 of the bracket 102.

Further, a tubular holding member 123 is attached to a portion A of the side plate portion 108 that approaches the bottom plate portion 107, and the electric wires 120 and 121 are respectively divided at positions passing through the inside of the holding member 123.

The electric wire 121 connected to the circuit board 105 of the camera body 101 extends along the side plate portion 108 of the bracket 102 as shown in FIG. After passing through a tubular holding member 124 provided on the main body 101 and further turning up the upper part of the optical system of the camera main body 101, it is connected to the circuit board 105 disposed at the bottom of the optical system.

Further, the electric wire 120 divided from the electric wire 121 in the part A is drawn in parallel with the bottom plate portion 107 of the bracket 102 as shown in FIGS. 4 to 6, and the end portion of the camera body 101 opposite to the lens 104. And is connected to the drive board 125 of the vertical drive motor 111.

The camera device 100 of the present invention includes the electric wires 120 and 121 arranged as described above, and the operation and effect thereof will be described below. First, the electric wire 121 will be considered. Electric wire 121
However, it is considered that the effect of suppressing noise and the like is large, and even if an image signal is transmitted, it is hardly deteriorated.

Therefore, the most important point is that the drawing position does not hinder the horizontal and vertical driving of the camera body 101 and that the resistance to disconnection is increased against repeated bending.

First, the horizontal driving will be described. The end of the base 103 connected to the circuit board 119 is naturally fixed and does not move, and is held by the holding member 123 at the portion A after passing through the cylindrical shaft 114. Therefore, it can be seen that the position of the part A moves the most in the horizontal direction.

That is, as shown in FIG. 7, the part A moves in the range of points 702 to 703 around the cylindrical shaft 114 with respect to the end 701 fixed to the circuit board 119 of the base 103. In FIG. 7, the position indicated by the alternate long and short dash line 704 indicates a state in which the camera body 101 faces the front with respect to the base 103, and the points 702 and 703 are 175 degrees left and right (plus or minus) around the alternate long and short dash line 704. This is the rotated position.

When the camera body 101 rotates in this way, the electric wires 120 and 121 are connected to the cylindrical shaft 114.
However, since the bundle of electric wires 120 and 121 has a small diameter and the cylindrical shaft 114 has a predetermined diameter, the stress received by the bundle is small. That is, it is possible to increase the resistance to disconnection due to repeated bending due to twisting in the horizontal direction without hindering the horizontal rotation of the camera body 101.

Next, vertical driving will be described. The camera body 101 rotates about the vertical rotation axis 106 from the horizontal state (zero degree) shown in FIGS. 1 to 6 by 30 degrees downward (minus), and the lens 104 is directly above in the upward direction. It is driven to turn, that is, to rotate 90 degrees (plus).

FIG. 8 shows a state in which the lens 104 faces directly upward. The camera body 101 is driven to rotate 30 degrees further downward from the state shown in FIG. 8 and the horizontal state. At this time, the electric wire 121 is a holding member 123 attached to the side plate portion 108 of the bracket 102.
The part B held by the camera body 101 is moved by the holding member 124 with the part A held by the fulcrum as a fulcrum, but the part B exists in the vicinity of the vertical rotation shaft 106, and the part A further Since it is located away from the vertical rotation shaft 106, the part B is as shown in FIG.
It moves in the range from point B1 to point B2. Since the moving distance is short, the amount of bending of the electric wire 121 can be kept small, and the proof strength against disconnection due to repeated bending can be increased. Further, there is no problem with respect to the vertical rotation of the camera body 101.

As described above, according to the camera device of the present invention, even when the camera body 101 is rotated in the horizontal direction and when it is rotated in the vertical direction, the electric wires 120 and 121 can be subjected to great stress due to repeated bending. Therefore, the resistance to disconnection can be increased.

In addition, since the wires 120 and 121 are formed by bundling a plurality of coaxial cables as materials, it is possible to effectively eliminate the influence of noise in the process of transmitting an image signal. is there.

If the cables 120 and 121 are flexible cables rather than micro coaxial cables, it is necessary to take a spring-like structure to reduce the amount of deflection, which increases the length of the line. There are mechanical problems such as the need for a space for winding the mainspring. In addition, since the line becomes longer, there are problems that the signal is attenuated electrically and is easily affected by noise.

By using an extra fine coaxial cable, it is not necessary to use a long electric wire, so that it is possible to reduce the space in terms of mechanical properties, and it is possible to realize good transmission of an image signal electrically.

The present invention is not limited to the embodiment described above, and various modifications can be made without departing from the spirit of the present invention.

The perspective view shown in order to demonstrate one Embodiment of the camera apparatus concerning this invention. The disassembled perspective view which decomposes | disassembles and shows the camera apparatus shown in FIG. 1 to main components. Sectional drawing which cuts and shows the camera apparatus shown in FIG. 1 along the perpendicular | vertical rotation coaxial. The side view shown in order to demonstrate the state which looked at the camera apparatus shown in FIG. 1 from one side. The top view shown in order to demonstrate the state which looked at the camera apparatus shown in FIG. 1 from upper direction. The side view shown in order to demonstrate the state which looked at the camera apparatus shown in FIG. 1 from the other side. The figure shown in order to demonstrate the locus | trajectory of an electric wire at the time of rotating the camera main body of the camera apparatus shown in FIG. 1 in a horizontal direction. The figure shown in order to demonstrate the state which rotated the camera main body of the camera apparatus shown in FIG. 1 to the orthogonal | vertical direction. The figure shown in order to demonstrate the locus | trajectory of an electric wire at the time of rotating the camera main body of the camera apparatus shown in FIG. 1 to the orthogonal | vertical direction.

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 ... Camera apparatus 101 ... Camera body 102 ... Bracket 103 ... Base 104 ... Lens 105 ... Circuit board 106 ... Vertical rotating shaft 107 ... Bottom plate part 108, 109 ... Side plate part 110 ... Gear 111 ... Vertical drive motor 112 ... Gear group 113, 117 ... pulley with teeth 114 ... cylindrical shaft 115 ... coupling portion 116 ... horizontal drive motor 118 ... timing belt 119 ... circuit board 120, 121 ... electric wire 122 ... opening 123, 124 ... holding member 125 ... drive board

Claims (2)

The base,
A circuit board provided on the base;
A bracket that is disposed so as to be rotatable in a horizontal direction around a hollow horizontal rotation shaft provided on the base, and has a side plate portion ;
A camera body including an image pickup device and an optical system that forms an optical image on the image pickup device, which is rotatably arranged in a direction intersecting the horizontal direction around a vertical rotation shaft provided on a side plate portion of the bracket. When,
Horizontal driving means including a motor provided on the base and configured to rotate the bracket in a horizontal direction around the horizontal rotation axis;
Vertical direction drive means including a motor provided on the bracket and configured to rotate the camera body in a vertical direction around the vertical rotation axis;
A circuit board provided in the camera body and electrically coupled to the imaging element and the optical system;
A first circuit that is drawn from the circuit board of the base through the horizontal rotation shaft and is held by a first holding portion provided on the side plate portion below the vertical rotation shaft. And a second holding portion provided in the camera body at a position above the vertical rotation shaft and closer to the vertical rotation shaft than the first holding portion. It is routed along the movement axis, wherein the second portion connected to a camera circuit board of the main body, said first, is disposed between the second holding portion, with the rotation of the camera body A bundle of first micro coaxial cables having a third portion whose position changes relative to the side plate portion ,
A bundle of second fine coaxial cables that are routed through the horizontal pivot shaft and connected to the motor of the vertical driving means from the circuit board of the base;
A camera apparatus comprising:   The bracket includes a pair of side plate portions, the vertical rotation shaft is rotatably supported between the pair of side plate portions, and a bundle of the first and second micro coaxial cables is connected to the horizontal rotation shaft. After passing, at one side plate portion of the bracket, it is separated into a bundle of first micro coaxial cables and a bundle of second micro coaxial cables, and the bundle of first micro coaxial cables is attached to the vertical rotation shaft. The camera apparatus according to claim 1, wherein the camera apparatus is connected along a circuit board of the camera body.

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