JP2002374433A - Monitor camera device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate the need to swivel a monitor camera by using a reflecting mirror, to lighten the rotational load on a motor, etc., and to make a device small-sized and lightweight on the whole. SOLUTION: The monitor camera 3 is provided fixedly in a cylindrical easing 1 and an annular swivel gear 5 which is driven by a small-sized motor to swivel is provided rotatably atop and nearby the light entrance part 3A of the monitor camera 3. The swivel gear 5 is provided with a couple of left and right separate support arms 8 across the optical axis O-O of the monitor camera 3 and a mirror protection cover 9. The reflecting mirror 10 is provided between the support arms 8 and the camera sight line of the monitor camera 3 is reflected in a direction oblique to the optical axis O-O. While the monitor camera 3 is fixed in the easing 1, the mirror protection cover 9 and reflecting mirror 10 are driven to swivel around the optical axis O-O together with the swivel gear 5.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a surveillance camera device which is preferably used as a surveillance camera installed in, for example, an exhibition hall or a store of goods.

[0002]

2. Description of the Related Art Generally, in an exhibition hall, a store or the like of a product, a surveillance camera device is installed, for example, on a ceiling side or an arbitrary support base, and the surveillance camera device is remotely operated to allow a 360-degree inside the store. In order to prevent theft and so on.

[0003] A surveillance camera device of this type according to the prior art includes a cylindrical casing forming an outer shell of the device, a revolving body rotatably provided in the casing and driven by an electric motor, and a revolving body. The monitoring camera is mounted on the casing and pivotally driven about the axis of the casing together with the revolving body, and a light-transmitting dome cover provided on the casing so as to cover the monitoring camera from outside.

The surveillance camera comprises, for example, a video camera, a TV camera, or the like, and is provided with a revolving body provided in the casing for 360 degrees around the axis of the casing.
It is driven to rotate continuously over a range of degrees.

In this case, the surveillance camera captures an image of the outside of the dome cover with a 360-degree omnidirectional camera line of sight and outputs the image to an external remote control device or the like. Then, on the remote operation device side, an image from the surveillance camera is displayed using a monitor such as a display, and an observer such as a guardman can observe the monitor to check the situation in the store.

[0006]

In the prior art described above, the surveillance camera, which is a heavy object, is swiveled together with the revolving body by a rotating source such as an electric motor provided in the casing. The surveillance camera driven together with the body, for example, increases the rotational load of the electric motor, which causes a problem that a large electric motor or a reduction gear needs to be used.

Further, when a large-sized electric motor, a speed reducer, or the like is used, the casing of the surveillance camera device is required to have a strong structure, which results in an increase in the size of the surveillance camera device. The installation location of the device is easy to see,
There is a problem that it becomes an obstacle in preventing theft and the like.

Further, since the surveillance camera is provided with a cable such as a signal line for taking in an image signal or the like, when the surveillance camera is driven to rotate in the casing, the cable also moves at this time. 3 surveillance cameras
There is a problem that it is difficult to drive in all directions over 60 degrees.

On the other hand, for example, there is a case where a plurality of surveillance cameras are fixedly installed in an exhibition hall of a product, in a store, or the like. In this case, however, the number of surveillance cameras is increased.
There are problems that the installation work is troublesome and that the cost is increased.

The present invention has been made in view of the above-mentioned problems of the prior art. An object of the present invention is to reduce the rotational load of a motor or the like by using a reflecting mirror without having to turn and rotate a surveillance camera. Another object of the present invention is to provide a surveillance camera device capable of reducing the size and weight of the entire device.

[0011]

Means for Solving the Problems To solve the above-mentioned problems, a configuration adopted by the invention of claim 1 is a casing to which a surveillance camera is mounted, and a rotatably provided inside the casing, wherein the surveillance camera is provided. A revolving body positioned around the light incident portion of the revolving body and driven by a revolving source, a mirror support provided on the revolving body and revolving integrally with the revolving body, and located on the optical axis of the monitoring camera. And a reflection mirror that is attached to the mirror support and reflects light from the imaging target by the reflection mirror and guides the light to the light entrance of the surveillance camera.

With such a configuration, the surveillance camera can be disposed in the casing such that the optical axis extends in the axial direction of the casing, the outer diameter of the casing can be reduced, and the surveillance camera can be formed using a reflection mirror. Can be oriented in a direction different from the optical axis. When providing a 360-degree omnidirectional camera line of sight, for example, with the surveillance camera fixed in the casing, when the revolving body is revolved by a rotation source in the casing, a mirror is provided together with the revolving body. Since the support portion and the reflecting mirror are turned over a range of 360 degrees around the optical axis of the surveillance camera, light from the imaging target over a range of 360 degrees is reflected by the reflecting mirror, and the light input portion of the surveillance camera is reflected. , And the camera line of sight in all directions can be secured. Further, cables such as signal lines provided in the monitoring camera do not move in the casing.

The invention according to a second aspect of the present invention is configured such that mirror angle adjusting means for variably adjusting the inclination angle of the reflection mirror with respect to the optical axis of the surveillance camera is provided between the mirror support and the reflection mirror. I have.

In this case, the inclination angle of the reflection mirror with respect to the optical axis of the surveillance camera can be variably adjusted by using the mirror angle adjustment means, and the camera line of sight of the surveillance camera is shifted upward according to the inclination angle of the reflection mirror. The angle can be adjusted in any direction, such as pointing or downward.

On the other hand, according to the invention of claim 3, the revolving body comprises an annular revolving wheel which is rotatably mounted on the casing or on the outer peripheral side of the light incident portion of the surveillance camera via a bearing. The wheels are driven to rotate.

With this configuration, when the rotating wheel is driven to rotate by the rotation source, the rotation of the rotating wheel can be transmitted to the reflecting mirror via the mirror support, whereby, for example, the reflecting mirror is centered on the optical axis of the monitoring camera. Can be turned (rotated) in any direction.

According to the fourth aspect of the present invention, the revolving body comprises an annular revolving gear, the rotation source comprises an electric motor, and the output shaft of the electric motor is formed with a smaller diameter than the revolving gear. And a pinion that meshes with the pinion.

Thus, the rotation of the electric motor can be reduced between the pinion and the turning gear, and the reflecting mirror can be smoothly turned while transmitting a relatively large rotating torque to the turning gear.

According to the fifth aspect of the present invention, the revolving body is provided with a mirror protection cover which covers the reflection mirror from the outside and has an opening in the direction of the object to be imaged, and the mirror protection cover is integrated with the mirror support. Configuration.

In this case, for example, by covering the reflecting mirror with a black mirror protective cover, light guided from the object to be imaged through the opening of the protective cover is prevented from being irregularly reflected around the reflecting mirror, and the image is captured. The light from the object can be stably guided to the light entrance of the surveillance camera by the reflection mirror.

According to the invention of claim 6, a light-transmitting dome cover, which is formed in a substantially hemispherical shape by a light-transmitting material and covers the reflecting mirror from the outside together with the revolving body and the mirror support, can be attached to and detached from the casing. Is provided.

Thus, the reflection mirror and the like can be protected from external foreign substances by the dome cover, and the reflection mirror can be prevented from being stained or damaged. In addition, a wide area image over the entire periphery of the dome cover can be captured by the surveillance camera.

Further, the invention according to claim 7 is provided with drive control means for controlling the drive of the rotation source in accordance with an external command means in order to turn the reflecting mirror together with the turning body in an arbitrary direction. Thereby, the reflecting mirror can be rotated continuously or intermittently with the rotating body, or the rotation speed can be changed, and the camera line of sight of the surveillance camera can be oriented in an arbitrary direction using the reflecting mirror.

[0024]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a surveillance camera device according to an embodiment of the present invention will be described in detail with reference to FIGS.

FIG. 1 to FIG. 7 show a first embodiment of the present invention. In the figure, reference numeral 1 denotes a casing of the monitoring camera device. The casing 1 is formed as a cylindrical body from a metal plate or a resin material, and one end of the casing 1 is installed on a support (not shown) of the device. It has a fixed end.

An annular closing plate portion 1A is provided on the other end of the casing 1, and a male screw portion 1B to which a dome cover 4 described later is screwed is formed on the outer peripheral side of the closing plate portion 1A. I have. The light entrance 3A of the monitoring camera 3 is inserted into the inner peripheral side of the closing plate 1A via an adapter 7 described later.

Reference numeral 2 denotes a camera holding plate fixedly provided in the casing 1, and reference numeral 3 denotes a surveillance camera mounted in the casing 1 via the camera holding plate 2.
Is constituted by, for example, a digital camera or a small video camera. The surveillance camera 3 has a cylindrical light incident portion 3A into which light from an imaging target enters, and the light incident portion 3A is fitted to the camera holding plate 2 so as to extend toward the adapter 7 side. Are fixed together.

The light entrance 3A of the surveillance camera 3 has an objective lens 3B inside, and an optical axis OO passing through the center of the objective lens 3B extends in the axial direction of the casing 1.
Then, the surveillance camera 3 captures an image of the outside of the dome cover 4 with a camera line of sight Ci described later, and outputs the image to a controller 14 described later.

Then, the controller 14 displays an image from the surveillance camera 3 using a display 18 or the like, which will be described later, as shown in FIG. 4, and an observer such as a guardman observes the display 18 to display the goods. It is possible to confirm the situation inside the store.

Reference numeral 4 denotes a dome cover detachably provided on the side of the closing plate portion 1A of the casing 1;
Is formed as a substantially hemispherical cylindrical dome using, for example, a transparent or translucent light-transmissive material, and one end side thereof is a cylindrical opening end 4A.

The dome cover 4 is fixed to the casing 1 by screwing a female screw formed on the inner peripheral side of the opening end 4A into the male screw portion 1B of the casing 1.
The dome cover 4 is provided with a mirror protection cover 9 described later.
In addition, the reflection mirror 10 and the like are covered from the outside to protect them from external obstacles and the like, and also eliminate problems such as the presence of the surveillance camera 3 being easily seen from outside.

Reference numeral 5 denotes an annular slewing gear as a slewing ring which is rotatably provided on the closing plate portion 1A of the casing 1 via a bearing 6 and constitutes a slewing body.
The surveillance camera 3 is formed as a ring having a diameter larger than that of the light incident portion 3A, and an outer gear meshing with a pinion 13 described later is provided on an outer peripheral side thereof. The turning gear 5 is driven to turn around the optical axis OO of the monitoring camera 3 in the directions indicated by arrows A and B (forward and reverse directions) in FIG. .

Reference numeral 7 denotes an adapter provided on the inner peripheral side of the revolving gear 5, and the adapter 7 is a closing plate 1A of the casing 1.
Is formed as a stepped cylindrical body that fills a gap between the light receiving part 3A of the monitoring camera 3 and its outer peripheral side is fixed to the turning gear 5 by fitting or the like. The adapter 7 is configured to rotate integrally with the revolving gear 5 around the light entrance 3A (optical axis OO).

The inner peripheral side of the adapter 7 is a light incident portion 3A.
Is surrounded by a small gap to allow relative rotation between the adapter 7 and the light incident portion 3A, and minimize the occurrence of light leakage and the like through the gap between the two. It has a function.

Reference numerals 8 and 8 denote a pair of support arms which constitute a mirror support unit provided integrally with the turning gear 5, and each of the supporting arms 8 has an optical axis in the radial direction of the turning gear 5 as shown in FIG. It is arranged left and right with OO interposed therebetween. One end (lower end) of each support arm 8 is connected to the revolving gear 5.
And the other end (upper end side) is extended upward in parallel with the optical axis OO.

Here, a reflecting mirror 10 to be described later is rotatably connected to the upper end side of each support arm 8 by using left and right adjusting tools 11, 11, and this adjusting tool 11 is manually rotated. By operating, the inclination angle α (α1,
α2) is variably adjusted as shown in FIGS.

Reference numeral 9 denotes a mirror protection cover provided on the revolving gear 5 together with each support arm 8.
Is formed as a covered cylindrical cover as shown in FIGS. 1 to 3, and is integrally disposed on the revolving gear 5 by being screwed to the left and right support arms 8. Also,
The mirror protection cover 9 is provided with an opening 9A for guiding light from an external imaging target to the reflection mirror 10, and the opening 9A has an opening angle θ (for example, 60 to 8) as shown in FIG.
(0 degree).

Here, the inner and outer surfaces of the mirror protection cover 9 are coated with, for example, black paint. The mirror protection cover 9 covers the reflection mirror 10 from the outside, so that light guided from the imaging target through the opening 9A of the protection cover 9 is prevented from being irregularly reflected (scattered) around the reflection mirror 10, and imaging is performed. Light from the object is reflected by the mirror 10
Thus, it is compensated that the light is stably guided to the light incident portion 3A side of the monitoring camera 3.

The mirror protection cover 9 has a function of covering the reflection mirror 10 from the outside to prevent the presence of the reflection mirror 10 from being easily visually recognized from outside the dome cover 4. Therefore, the opening angle θ of the opening 9A
Is set to be as small as possible, for example, about 60 to 80 degrees, and the width of the opening 9A is formed to be smaller than that of the reflection mirror 10 as shown by a two-dot chain line in FIG.

The mirror protection cover 9 does not necessarily have to be formed separately from the left and right support arms 8, 8.
Both may be integrally formed in advance and mounted on the turning gear 5. In this case, the mirror supporting portion can be constituted by the mirror protection cover.

Reference numeral 10 denotes a reflecting mirror positioned on the optical axis OO and mounted between the left and right support arms 8 and 8. 8 and is pivotally connected to the optical axis OO, and is tilted as necessary around a rotation center aa orthogonal to the optical axis OO.

Numerals 11 and 11 denote adjusting tools as mirror angle adjusting means provided between each support arm 8 and the reflecting mirror 10, and each adjusting tool 11 has a rotation center aa shown in FIG.
It has a support shaft 11A disposed thereon, and the reflection mirror 10 is rotatably connected to each support arm 8 by the support shaft 11A. The adjustment tool 11 is manually rotated from the outside of the mirror protection cover 9 to change the inclination angle α (α1, α2) of the reflection mirror 10 in FIGS.
As shown in FIG.

Thus, the reflection mirror 10 reflects the camera line of sight Ci of the monitoring camera 3 in a direction different from the optical axis OO by an angle β (for example, β = 2 × α). Then, as shown in FIG. 5, when the inclination angle α of the reflecting mirror 10 is set to, for example, about 45 degrees, the angle β of the camera line of sight Ci becomes about 90 degrees. It can be directed in a direction substantially perpendicular to the optical axis OO (for example, in a direction horizontal to the installation surface of the casing 1).

Reference numeral 12 denotes an electric motor as a rotation source attached to the closing plate portion 1A of the casing 1. The electric motor 12 is constituted by, for example, a small motor having a smaller diameter than the light incident portion 3A of the monitoring camera 3. The output shaft is provided with a small-diameter pinion 13 as a drive gear. And
The pinion 13 meshes with the outer peripheral side of the turning gear 5, reduces the rotational output of the electric motor 12, and transmits the rotation output to the turning gear 5.

As a result, the revolving gear 5 rotates at a low speed with a high torque. At this time, the reflecting mirror 10 moves the optical axis O together with the revolving gear 5, each support arm 8 and the mirror protection cover 9.
Slowly driving around −O. The reflection mirror 10 reflects the light from the imaging target located outside the dome cover 4 and guides the light to the surveillance camera 3, so that the surveillance camera 3 is fixed in the casing 1, for example, 360 degrees. Omnidirectional camera line of sight Ci.

Reference numeral 14 denotes a controller constituting drive control means for the electric motor 12 and the like. The controller 14 is constituted by, for example, a microcomputer or the like. As shown in FIG. It is connected to a position sensor 15, an external input device 16, a remote control switch 17 as external command means, and the like.

The output side of the controller 14 is connected to the electric motor 12, the display 18, the external storage device 19, the focus adjustment device 20 of the monitoring camera 3, and the like. In this case, the external storage device 19 is configured by a hard disk device or a video deck (recording device) or the like,
The focus adjustment device 20 controls the focal length (depth of focus) of the monitoring camera 3 with respect to the imaging target located outside the dome cover 4.
Is adjusted while monitoring on the display 18.

The rotation position sensor 15 on the input side detects the rotation position (rotation angle) of the electric motor 12, whereby the reflection mirror 10 moves from the reference position (origin position) to the optical axis O.
This is to detect the degree of rotation about -O. On the other hand, the external input device 16 is configured by a keyboard, a mouse, and the like, and is used for input operation at the time of initial setting of the device, for example.

Further, a remote control switch 17 as an external command means is operated by an operator by a selection switch (not shown).
By pressing the button, etc., the rotation mode of the electric motor 12 is selected as “continuous rotation”, “intermittent rotation”, “swinging rotation”, “manual rotation”, etc. Is variably controlled.

The surveillance camera device according to the present embodiment has the above-described configuration, and its operation will now be described.

First, for example, when monitoring the inside of a store where commodities are displayed by remote control, the operator adjusts the angle of the reflection mirror 10 using the adjusting tool 11 in advance. Then, as shown in FIG. 5, when the inclination angle α of the reflection mirror 10 is set to, for example, about 45 degrees, the angle β of the camera line of sight Ci becomes about 90 degrees, and the camera line of sight Ci of the monitoring camera 3 becomes
Can be directed in a direction substantially perpendicular to the optical axis OO.

In this state, when the operator manually operates the remote control switch 17 and selects, for example, "continuous rotation", the controller 14 outputs a control signal for instructing the electric motor 12 to perform continuous rotation, and Motor 1
2 rotates continuously in one direction. As a result, the reflecting mirror 10 is rotated within the dome cover 4 by the revolving gear 5 and each support arm 8.
3, and the mirror protection cover 9 is slowly rotated around the optical axis OO, for example, in the direction of arrow A (clockwise) in FIG.

At this time, the reflection mirror 10 reflects the light from the object to be imaged located outside the dome cover 4 and guides the light to the surveillance camera 3, thereby keeping the surveillance camera 3 fixed in the casing 1. For example, an omnidirectional camera line of sight Ci over 360 degrees can be provided.

As described above, the monitoring camera 3 is provided in the casing 1.
By keeping the reflection mirror 10 continuously rotated about the optical axis OO together with the mirror protection cover 9 and the like while keeping the fixed state, the camera line of sight Ci of the surveillance camera 3 becomes a hemispherical dome cover 4. Is remotely controlled almost all around. At this time, a signal cable (not shown) provided in the monitoring camera 3 does not move in the casing 1.

The controller 14 performs image processing (for example, correction processing for restoring an image inverted by the reflection mirror 10) on the image captured by the monitoring camera 3, and displays, for example, the video after the image processing. 18 is displayed on the screen. Also, the video at this time is stored in the external storage device 19, and can be reproduced as needed. Accordingly, the operator (a guardman or the like) can observe the image of the surveillance camera 3 on the screen of the display 18 to secure the camera line of sight Ci throughout the store, for example, and check the situation in the store. It can be easily confirmed.

The operator operates the remote control switch 17
For example, when “intermittent rotation” is selected, a control signal for instructing the electric motor 12 to perform intermittent rotation is output from the controller 14, and the electric motor 12 intermittently rotates in one direction, thereby causing the electric motor 12 to rotate inside the dome cover 4. Reflection mirror 10
Is rotated intermittently with the mirror protection cover 9 and the like around the optical axis OO at every rotation angle of, for example, about 5 to 10 degrees.

On the other hand, for example, when "swinging rotation" is selected by the remote control switch 17, the controller 1
A control signal for instructing the electric motor 12 to swing is output from 4 and the electric motor 12 rotates so as to repeat forward rotation and reverse rotation. Thereby, the reflection mirror 10 is moved together with the mirror protection cover 9 and the like in the dome cover 4 at a predetermined swing angle (for example, a swing angle of 90 degrees, 120 degrees or 180 degrees, etc.) in the direction indicated by the arrow A in FIG. (The clockwise direction) and the arrow B direction (the counterclockwise direction) are repeatedly rotated slowly.

Then, the surveillance camera device may be installed near a wall or the like, and the reflection mirror 10 may be swung in the dome cover 4 at a swing angle of, for example, 180 degrees. A surveillance operation can be performed with an arbitrary swing angle, such as a swing motion of the reflection mirror 10 at a swing angle of degrees. At this time, the cable of the monitoring camera 3 does not move in the casing 1.

When "manual rotation" is selected by the remote control switch 17, the rotation of the electric motor 12 can be controlled by manual operation, and the rotation direction and rotation speed of the reflection mirror 10 can be arbitrarily set in the dome cover 4. Can be changed. When the operation of stopping the reflection mirror 10 is performed at a position designated by the operator, for example, the camera line of sight Ci in the store is fixed in one direction, and the situation in the store can be observed in a stationary state.

Thus, in the present embodiment, while the surveillance camera 3 is fixed inside the casing 1, the left and right via the pinion 13 and the turning gear 5 are driven by the electric motor 12 in the casing 1. The mirror protection cover 9 and the reflection mirror 10 together with the support arms 8, 8 are
Of the surveillance camera 3 is reflected by the reflection mirror 10 in a different direction from the optical axis OO and turned.

Thus, for example, when the reflecting mirror 10 is turned around the optical axis OO over a range of 360 degrees, the light from the omnidirectional imaging object over the entire circumference (360 degrees) of the dome cover 4 is obtained. Is reflected by the reflection mirror 10 and guided to the light entrance 3A of the surveillance camera 3, and the camera line of sight Ci in all directions can be easily secured.

For this reason, it is not necessary to turn the monitoring camera 3 inside the casing 1, so that the rotational load of the heavy electric motor 12 can be reduced and a small motor can be used. As a result, the entire surveillance camera device can be made compact and compact.
As in the prior art, the size of the surveillance camera device is increased, the installation place is not noticeable, and effective measures can be taken to prevent theft.

Further, since the surveillance camera 3 may be fixed inside the casing 1, a cable (not shown) such as a signal line provided in the surveillance camera 3 does not move in the casing 1, so that the cable is disconnected and the connector is disconnected. It is possible to greatly reduce the possibility of damage, breakage, and the like, and to improve the reliability of the device.

Further, by turning the reflecting mirror 10 around the optical axis OO, the camera line of sight Ci in all directions is provided.
Therefore, it is not necessary to install a plurality of surveillance cameras in an exhibition hall of a product, in a store, or the like as in the related art, so that the number of surveillance cameras to be installed can be reduced and the installation work can be simplified.

On the other hand, when the installation location of the surveillance camera device is to be changed, the adjusting tool 11 is manually rotated from the outside of the mirror protection cover 9 with the dome cover 4 removed from the male screw portion 1B of the casing 1. By operating, the tilt angle α of the reflection mirror 10 can be variably adjusted as illustrated in FIGS. 5 to 7.

FIG. 5 shows the inclination angle α of the reflection mirror 10.
From the state shown in FIG. 6 as shown in FIG.
Degree), the camera line of sight C of the surveillance camera 3
i can be changed downward from the optical axis OO by an angle β1 (for example, 120 degrees). For example, by installing a surveillance camera device at a high position in the store, a bird's-eye view image in the store can be obtained. Can be easily captured.

In the case where the surveillance camera device is turned upside down, for example, when the dome cover 4 is installed so as to hang down from the ceiling of the store, the reflection mirror 10 is mounted as shown in FIG. Tilt angle α2 (for example, 30 degrees)
Change to Thereby, the camera line of sight C of the surveillance camera 3
i can be changed in a direction inclined downward by an angle β2 (for example, 60 degrees) from the optical axis OO. For example, an overhead video of the interior can be captured from the ceiling side of the store.

As described above, the inclination angle α of the reflection mirror 10 with respect to the optical axis
By variably adjusting α1 and α2, the surveillance camera 3
Of the camera with respect to the optical axis OO at angles β, β1, β
The angle can be adjusted in any direction, such as facing upward or downward for two minutes, for example, to secure a wide viewing angle in a store.

The rotation of the electric motor 12 is controlled by the pinion 1
Since it is configured to reduce the speed between the gear 3 and the turning gear 5,
Even if the electric motor 12 is a small motor, a relatively large rotating torque can be transmitted to the turning gear 5, whereby the reflection mirror 10 and the like can be smoothly turned inside the dome cover 4.

Therefore, according to the present embodiment, the use of the reflection mirror 10 and the like eliminates the need to turn the monitoring camera 3 inside the casing 1, and the electric motor 12
The rotation load of the camera can be reduced, a small motor can be used, and the entire monitoring camera device can be reduced in size and weight. For example, effective measures can be taken to prevent theft in a store.

Further, by turning the reflecting mirror 10 around the optical axis OO, the camera line of sight Ci in all directions is obtained.
This eliminates the need to install multiple surveillance cameras in product exhibition halls, stores, etc. as in the prior art, reducing the number of surveillance cameras to be installed, simplifying installation work and reducing costs. Can be planned.

FIGS. 8 and 9 show a second embodiment of the present invention. The feature of this embodiment is that a video camera or a TV camera (television camera) or the like is used as a surveillance camera. It is in. In this embodiment, the same components as those in the first embodiment are denoted by the same reference numerals, and the description thereof will be omitted.

In the figure, reference numeral 31 denotes a casing of the surveillance camera device employed in the present embodiment.
It is configured substantially the same as the casing 1 described in the first embodiment, and has an annular closing plate portion 31A, a male screw portion 31B, and the like.

Reference numeral 32 denotes an annular camera holder provided in the closing plate portion 31A of the casing 31. Reference numeral 33 denotes a monitoring camera attached to the casing 31 via the camera holder 32. The monitoring camera 33 is, for example, It is composed of a video camera or a TV camera. And
The light incident part 33A of the monitoring camera 33 is provided with an adapter 37 described later.
It is fitted and fixed in the camera holder 32 so as to extend toward the side.

The light incident part 33A of the surveillance camera 33
An objective lens 33B is provided inside, and an optical axis OO passing through the center of the objective lens 33B extends in the axial direction of the casing 31. The monitoring camera 33 captures an image of the outside of a dome cover 34, which will be described later, in substantially the same manner as the monitoring camera 3 described in the first embodiment, and outputs the image to the controller 14 and the like.

Reference numeral 34 denotes a dome cover detachably provided on the male screw portion 31B side of the casing 31. The dome cover 34 has the same configuration as the dome cover 4 described in the first embodiment, and has one end thereof. Is a cylindrical open end 34A. Then, the dome cover 34 is
The female screw formed on the inner peripheral side of A is fixed to the casing 31 by being screwed to the male screw portion 31B of the casing 31.

Reference numeral 35 denotes a bracket provided on the outer periphery of the light incident portion 33A of the surveillance camera 33 on the distal end side. The electric motor 12 described in the first embodiment is attached to the bracket 35. Are arranged substantially parallel to the outside in the radial direction of the light incident portion 33A by the bracket 35.

Reference numeral 36 denotes an annular revolving gear as a revolving body rotatably provided via a bearing or the like on the outer periphery of the light-receiving portion 33A on the distal end side. The revolving gear 36 is described in the first embodiment. An external gear that meshes with the pinion 13 is formed on the outer peripheral side of the revolving gear 5 in substantially the same manner as the revolving gear 5.
The turning gear 36 is connected to the optical axis OO of the monitoring camera 33.
Is turned around by the electric motor 12.

Reference numeral 37 denotes an adapter provided integrally with the turning gear 36. The adapter 37 is formed as a stepped cylindrical body that fills a gap between the turning gear 36 and a mirror protection cover 39, which will be described later. The lower end) side is fixed to the revolving gear 36 by means such as welding or bonding. The adapter 37 rotates with the turning gear 36 relative to the light incident portion 33A.

Numerals 38 and 38 denote a pair of support arms constituting a mirror support portion provided integrally with the adapter 37. Each of the support arms 38 is arranged in the radial direction of the revolving gear 36 as shown in FIG. It is arranged left and right across -O. Then, one end side (lower end side) of each support arm 38
Are integrally fixed to the adapter 37 by means such as welding or bonding, and the other end (upper end) extends upward in parallel with the optical axis OO.

Reference numeral 39 denotes an adapter 3 together with each support arm 38.
7, the mirror protection cover 39 is configured in the same manner as the mirror protection cover 9 described in the first embodiment, and transmits light from an external imaging target to a reflection mirror 40 described later. 39A is formed as a square opening.

Reference numeral 40 denotes a reflection mirror located on the optical axis OO and mounted between the left and right support arms 38, 38. The reflection mirror 40 is the reflection mirror described in the first embodiment. It is configured similarly to 10.

Adjusters 41, 41 are provided as mirror angle adjusting means provided between each support arm 38 and the reflecting mirror 40. The adjusters 41 are the adjusters described in the first embodiment. 11 and the rotation center a shown in FIG.
The reflection mirror 40 is rotatably connected to each support arm 38 by a support shaft 41A disposed on the -a. The adjustment tool 41 is operable to be manually rotated from the outside of the mirror protection cover 39 to variably adjust the inclination angle of the reflection mirror 40.

Thus, in the present embodiment having the above-described configuration, substantially the same operation and effect as those of the first embodiment can be obtained. For example, the surveillance camera 33 including a video camera or a TV camera can be provided in the casing. Even in the case of disposing it inside 31, it is possible to make the whole smaller and more compact.

In each of the above embodiments, the adjusting tool 11
By manually rotating (41), the optical axis OO
Although it has been described that the inclination angle of the reflection mirror 10 (40) is variably adjusted, the present invention is not limited to this. For example, a motor different from the electric motor 12 is provided in the dome cover 4 (34) to adjust the mirror angle. It is also possible to provide a means for automatically adjusting the tilt angle of the reflection mirror 10 (40) by this motor.

Further, in each of the above embodiments, the revolving gear 5 (36) is rotationally driven by the electric motor 12 via the pinion 13. However, the present invention is not limited to this. A revolving body may be constituted by a revolving wheel comprising a sprocket, and the revolving wheel may be rotationally driven by a rotation source such as an electric motor using a power transmission means such as a belt or a chain.

Further, in each of the above embodiments, the case where one reflection mirror 10 (40) is used has been described as an example. However, the present invention is not limited to this, and for example, two or more reflection mirrors may be used. Alternatively, the optical path may be changed for each reflection mirror.

[0088]

As described in detail above, according to the first aspect of the present invention, while the surveillance camera is fixed in the casing, the revolving body is driven to rotate by the rotation source in the casing. Since the mirror support and the reflection mirror are turned around the optical axis of the surveillance camera together with the revolving body, for example, a range of 360 degrees around the optical axis of the surveillance camera around the casing is provided. The light from the imaging target over the entire area can be reflected by the reflection mirror and guided to the light entrance of the surveillance camera, and the camera line of sight in all directions can be secured.

Therefore, by using a reflection mirror or the like, it is not necessary to turn the surveillance camera, which is a heavy object, in the casing, and it is possible to reduce the rotational load of a rotation source such as an electric motor and to use a small motor. The whole monitoring camera device can be reduced in size and weight, and effective measures can be taken to prevent theft in a store, for example.
Further, the cable of the surveillance camera does not move in the casing, so that disconnection of the cable and the like can be prevented, and reliability can be improved. In addition, by turning the reflecting mirror around the optical axis, it is possible to secure a camera line of sight in all directions, so that it is necessary to install a plurality of surveillance cameras in a product exhibition hall, a store, and the like as in the related art. As a result, the number of surveillance cameras installed can be reduced, and installation work can be simplified, costs can be reduced, and the like.

Further, according to the present invention, a mirror angle adjusting means for variably adjusting the inclination angle of the reflection mirror with respect to the optical axis of the surveillance camera is provided between the mirror support and the reflection mirror. Therefore, by using this mirror angle adjusting means, the inclination angle of the reflection mirror with respect to the optical axis of the surveillance camera can be variably adjusted, and the camera line of sight of the surveillance camera can be turned upward according to the inclination angle of the reflection mirror,
It is possible to secure the line of sight of the camera in any direction by turning the camera downward.

On the other hand, according to the third aspect of the invention, the revolving body comprises an annular revolving wheel mounted on the casing or on the outer peripheral side of the light entrance of the surveillance camera via a bearing.
Since the rotation source is configured to rotate the turning wheel,
When the turning wheel is driven to rotate by the rotation source, the rotation of the turning wheel is transmitted to the reflecting mirror via the mirror support, so that, for example, the reflecting mirror can be turned in any direction about the optical axis of the monitoring camera. it can.

According to the fourth aspect of the present invention, the revolving body is composed of a revolving gear, and a pinion having a smaller diameter than the revolving gear is provided on the output shaft of the electric motor serving as a rotation source. Can be greatly reduced between the pinion and the turning gear, and the reflecting mirror can be smoothly turned while transmitting a large rotating torque to the turning gear. Accordingly, a small motor can be used as the electric motor, and the entire monitoring camera device can be made small and compact.

According to the fifth aspect of the invention, the revolving body is provided with a mirror protection cover which covers the reflection mirror from the outside and has an opening in the direction of the object to be imaged, and the mirror protection cover is provided on the mirror support. Because it is configured to be integrated,
For example, by covering the reflection mirror with a black mirror protection cover, light guided from the imaging target through the opening of the protection cover is prevented from being irregularly reflected around the reflection mirror, and light from the imaging target is reflected by the reflection mirror. The light can be stably guided to the light entrance of the surveillance camera.

According to the sixth aspect of the present invention, the casing has a light-transmitting dome cover formed of a light-transmitting material in a substantially hemispherical shape and covering the reflecting mirror from the outside together with the revolving body and the mirror supporting portions. Is detachably provided, the reflection mirror and the like can be protected from external foreign substances by the dome cover, and the reflection mirror can be prevented from being stained or damaged. In addition, a wide-range image covering the entire periphery of the dome cover can be captured by the surveillance camera via the reflection mirror.

Further, the invention according to claim 7 is provided with a drive control means for controlling the drive of the rotation source in accordance with an external command means for turning the reflecting mirror in an arbitrary direction together with the turning body. The mirror can be rotated continuously or intermittently with the revolving body, the rotation speed can be changed, and the camera gaze of the surveillance camera can be oriented in any direction using the reflection mirror, and a stable image over a wide range Can be secured.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing a surveillance camera device according to a first embodiment of the present invention.

FIG. 2 is a longitudinal sectional view of the surveillance camera device as seen from the direction of arrows II-II in FIG.

FIG. 3 is an enlarged sectional view of the surveillance camera device as viewed from the direction of arrows III-III in FIG. 1;

FIG. 4 is a control block diagram of the monitoring camera device shown in FIG.

FIG. 5 is an explanatory diagram showing a direction of a camera line of sight by a reflection mirror in FIG. 2;

FIG. 6 is an explanatory diagram showing a camera line of sight when the tilt angle of the reflection mirror is increased from the state of FIG.

FIG. 7 is an explanatory diagram showing a camera line of sight when the monitoring camera device is mounted on the ceiling side of a store or the like and the inclination angle of the reflection mirror is reduced.

FIG. 8 is a longitudinal sectional view showing a monitoring camera device according to a second embodiment.

9 is a longitudinal sectional view of the surveillance camera device as viewed from the direction of arrows IX-IX in FIG.

[Explanation of symbols]

 1, 31 Casing 3, 33 Surveillance camera 3A, 33A Light incident part 3B, 33B Objective lens 4, 34 Dome cover 5, 36 Revolving gear (revolving body) 6 Bearing 8, 38 Support arm (mirror support) 9, 39 Mirror Protective cover 9A, 39A Opening 10, 40 Reflecting mirror 11, 41 Adjusting tool (mirror angle adjusting means) 12 Electric motor (rotation source) 13 Pinion 14 Controller (drive control means) 17 Remote control switch (external command means)

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) G03B 17/17 G03B 17/17 G08B 13/196 G08B 13/196 H04N 5/232 H04N 5/232 B F term (Reference) 2H101 FF00 5C022 AA01 AB62 AB65 AC51 AC61 AC74 5C084 AA02 AA07 AA14 AA20 BB23 BB31 CC16 DD11 DD61 EE01

Claims (7)

[Claims] 1. A casing on which a surveillance camera is mounted, a revolving body rotatably provided in the casing, and located around a light incident portion of the surveillance camera, and revolvingly driven by a rotation source. A mirror support that is provided and rotates integrally with the revolving body; and is mounted on the mirror support and located on the optical axis of the surveillance camera, and reflects light from an imaging target to enter the surveillance camera. A surveillance camera device having a configuration including a reflection mirror for guiding to a section. 2. The surveillance system according to claim 1, further comprising a mirror angle adjusting means for variably adjusting a tilt angle of the reflection mirror with respect to an optical axis of the surveillance camera, between the mirror support and the reflection mirror. Camera device. 3. The revolving body comprises an annular revolving wheel which is rotatably mounted on the casing or on the outer peripheral side of a light incident portion of the surveillance camera via a bearing, and the rotation source rotates the revolving wheel. The surveillance camera device according to claim 1 or 2, which has a configuration. 4. The revolving structure comprises an annular revolving gear,
The surveillance camera device according to claim 1, 2 or 3, wherein the rotation source comprises an electric motor, and an output shaft of the electric motor is provided with a pinion having a smaller diameter than the turning gear and meshing with the turning gear. . 5. The mirror according to claim 1, wherein the revolving body is provided with a mirror protection cover that covers the reflection mirror from the outside and has an opening in a direction of an imaging target, and the mirror protection cover is integrated with the mirror support. Item 5. The surveillance camera device according to item 1, 2, 3, or 4. 6. A light-transmissive dome cover, which is formed in a substantially hemispherical shape with a light-transmissive material and covers the reflection mirror from the outside together with a rotating body and a mirror support, is detachably provided on the casing. The surveillance camera device according to 1, 2, 3, 4 or 5. 7. A drive control means for driving and controlling the rotation source in accordance with an external command means for turning the reflection mirror in an arbitrary direction together with a turning body.
7. The surveillance camera device according to 3, 4, 5 or 6.