JP2014146973A - Monitor camera - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a monitor camera capable of facilitating an installation work and imaging a crime scene without allowing a shoplifter etc. to be aware of the imaging.SOLUTION: A monitor camera 1 includes: a first camera 10 to be visually recognized from an outside; and a second camera 20 disposed inside the first camera 10. The second camera 20 is arranged to face a direction different from that of the first camera 10 and images the dead angle of the imaging area of the first camera 10. Since a suspicious person such as a shoplifter cannot visually recognize the second camera 20, the crime scene of the suspicious person that has entered the dead angle of the first camera 10 can be imaged by the second camera 20.

Description

  The present invention relates to a surveillance camera.

  In various places such as department stores, surveillance cameras are installed to monitor and photograph suspicious persons such as shoplifters. However, shoplifters have a habit of confirming the position of the surveillance camera and its shooting area, entering the blind spot of the surveillance camera, and committing crimes such as shoplifting. Therefore, since the presence and shooting area of a normal surveillance camera are easily recognized by shoplifters and the like, it is difficult to photograph the crime scene.

  For this reason, a small camera may be installed behind a wall, ceiling, or object so that the surveillance camera is not easily recognized by shoplifters.

  Moreover, there exists a surveillance camera of patent document 1 as what can image | photograph the blind spot of a surveillance camera. The surveillance camera of Patent Document 1 includes a movable reflector in front of a lens and a sensor that detects a moving object in the blind spot of the camera. A reflector is activated based on the detection of a person by a sensor, and a person entering the blind spot is projected onto a lens and photographed.

JP 2011-229036 A

  When installing a small camera on a wall or ceiling, it is necessary to process the wall or ceiling. In addition, since it does not make sense if the installation location of the camera is recognized at the time of installation work, the installation work cannot be performed during a time zone when a person such as a customer enters or exits. For this reason, there exists a problem that installation work is difficult.

  In the surveillance camera of Patent Document 1, the reflector is disposed in front of the lens and can be visually recognized from the outside. For this reason, a shoplifter or the like notices that the object reflected by the reflector is photographed, and there is a possibility that the crime scene cannot be photographed.

  The present invention has been made in view of the above matters, and its purpose is to provide a surveillance camera that is easy to install and capable of photographing a crime scene without being noticed by shoplifters, etc. There is to do.

The surveillance camera according to the present invention is:
A first camera viewed from the outside;
A second camera installed inside the first camera,
The second camera is arranged in a different direction from the first camera, and captures a blind spot in an imaging region of the first camera;
It is characterized by that.

  The first camera may be a dummy camera.

  The second camera may take a picture through a hole provided in the case of the first camera.

  Further, a part of the case of the first camera may have a light transmitting part, and the second camera may take an image through the light transmitting part.

  Further, when the surveillance camera is installed, the second camera may be arranged so as to take an image below the surveillance camera.

  The intersection angle between the optical axis of the lens of the first camera and the optical axis of the lens of the second camera may be 80 to 100 °.

  The second camera may be a pinhole lens camera.

  The surveillance camera according to the present invention includes a first camera visible from the outside and a second camera installed inside the first camera. Then, the second camera images the blind spot in the imaging area of the first camera. The second camera can be used to photograph the crime scene of the suspicious person who has entered the blind spot of the first camera without making the second camera appear to a suspicious person such as a shoplifter.

  Further, since the first camera is visually recognized from the outside, the first camera may be viewed by a third party at the time of installation work, so that the installation work is easy.

It is a perspective view of a surveillance camera. It is A-A 'sectional drawing of FIG. It is a figure explaining the use condition of a surveillance camera. It is a figure explaining the use condition of a surveillance camera. It is sectional drawing of the surveillance camera which concerns on another form. It is a perspective view of the surveillance camera which concerns on another form. It is a perspective view of the surveillance camera which concerns on another form. It is a perspective view of the surveillance camera which concerns on another form.

  Hereinafter, the surveillance camera according to the present embodiment will be described with reference to the drawings. As shown in FIGS. 1 and 2, the monitoring camera 1 includes a first camera (dummy camera 10) and a second camera (hidden camera 20). That is, in a simplified manner, the hidden camera 20 is installed inside the dummy camera 10.

  The dummy camera 10 has a lens hood 12 on one surface of a rectangular parallelepiped case 11, and a dummy lens 13 is installed on the lens hood 12. The case 11 is provided with a mounting base 15 used when the surveillance camera 1 is installed on the ceiling or the like.

  The dummy lens 13 is installed so that it can be easily seen from the outside. For this reason, a person who sees the surveillance camera 1 recognizes that the video through the dummy lens 13 is taken by the surveillance camera 1.

  As the dummy camera 10, a commercially available dummy monitoring camera may be used as it is.

  For example, a hole 14 of about 1 mm to 5 mm is provided in a part of the side surface of the case 11 of the dummy camera 10. The hidden camera 20 takes an image through the hole 14.

  The hidden camera 20 captures a blind spot in the virtual shooting area of the dummy camera 10. The hidden camera 20 is installed inside the case 11 of the dummy camera 10 and is arranged so that it cannot be seen from the appearance of the surveillance camera 1. The hidden camera 20 is fixed to the case 11 so that the lens of the hidden camera 20 faces the hole 14. The hidden camera 20 can be fixed to the case 11 by a known method such as an adhesive, viscosity, or jig.

  The hidden camera 20 is connected to a substrate 31 installed in the case 11 by wiring 33. The substrate 31 is connected to a wiring 32 that leads to an external control device, recording device, monitor, or the like. With such a configuration, an image captured by the hidden camera 20 is transmitted to an external control device or the like. Note that the wiring 32 may be directly connected to the control device or the like without the substrate 31, or the video may be transmitted by wireless communication without the wiring 32.

  Any camera may be used as long as the hidden camera 20 is smaller than the internal volume of the case 11 and can be installed inside the case 11 without being recognized from the appearance of the surveillance camera 1. Any of these hidden cameras 20 that are commercially available may be used as they are.

  A preferred example of the hidden camera 20 is a camera having a pinhole lens (pinhole lens camera). A pinhole lens camera projects an image on an individual imaging element such as a CCD image sensor or a CMOS image sensor disposed behind a pinhole lens through a hole having a small diameter of about 1 to 4 mm, for example. Since photography can be performed through a small-diameter hole, the diameter of the hole 14 provided in the case 11 can be as small as several millimeters. For this reason, since the surveillance camera 1 looks similar to a commonly used surveillance camera, it can be prevented from being recognized from the outside that the hidden camera 20 is installed in the surveillance camera 1. Further, when existing screw holes or ventilation holes are provided in the case 11 of the commercially available dummy camera 10, they may be used as the holes 14.

  The hidden camera 20 is installed in a different direction from the dummy camera 10. For example, as shown in FIG. 2, the optical axis of the dummy lens 13 of the dummy camera 10 and the optical axis of the lens of the hidden camera 20 are The hidden camera 20 is installed in the dummy camera 10 so that the crossing angle θ is 80 to 100 °.

  Next, the usage state of the monitoring camera 1 will be described. For example, as shown in FIG. 3, the monitoring camera 1 is installed on the ceiling via a pedestal 15 and photographs the suspicious person S.

  The suspicious person S who is going to shoplift visually recognizes the surveillance camera 1. The suspicious person S recognizes the imaging region of the lens (here, the dummy lens 13), and moves to the blind spot of the dummy camera 10 with a product, for example. Then, the suspicious person S enters the blind spot of the dummy camera 10 and commits a crime there. As the psychology of the suspicious person S, the surveillance camera 1 can be relieved that the lens of the surveillance camera 1 (the dummy lens 13 in this case) is not facing and the crime scene is not taken. This is considered to be a place where crimes can be performed.

  In surveillance camera 1 according to the present embodiment, even if suspicious person S looks at surveillance camera 1, the presence of hidden camera 20 cannot be recognized. That is, the dummy camera 10 is visually recognized, and the virtual shooting area of the dummy camera 10 is recognized. Then, the suspicious person S is going to shoplift, considering the virtual shooting area of the dummy camera 10, moving to the blind spot below the dummy camera 10, that is, the surveillance camera 1, and committing a crime. Become.

  However, the blind spot below the dummy camera 10 is a shooting area of the hidden camera 20. For this reason, the suspicious person S who has committed the crime at the blind spot of the dummy camera 10 is photographed at the crime scene by the hidden camera 20. And the image | video of the crime scene of the suspicious person S image | photographed is transmitted to a recording device, a monitor, etc.

  Thus, it can be said that the surveillance camera 1 according to the present embodiment uses the psychology of the suspicious person S, hides the suspicious person S in the shooting area of the camera 20, and captures the crime scene.

  If it is a general hidden camera, it will be meaningless if its installation position and shooting area are recognized, so it must be installed so that it cannot be seen by a third party. That is, if it is a store such as a supermarket, a mass retailer, a department store, etc., installation work must be performed in a time zone when there are no customers after closing. In addition, it requires processing such as embedding the hidden camera inside the wall or ceiling, so that the installation work is complicated and the maintenance of the hidden camera after installation becomes difficult. In recent years, there are many stores that are open 24 hours a day, and it is particularly difficult to perform installation work without touching the eyes of such stores.

  On the other hand, since the surveillance camera 1 according to the present embodiment can be visually recognized even after installation, there is no problem even if the installation work is seen by a person. Therefore, it is not necessary to perform the installation work in anticipation of a time zone when there is no person, and the installation work is as easy as a general surveillance camera. In addition, since the surveillance camera 1 is exposed after installation, maintenance is easy as with a general surveillance camera.

  In the monitoring camera 1 described above, the hidden camera 20 is not photographed directly below, but is rotated about the optical axis of the dummy lens 13 as shown in FIG. 4, and the optical axis of the lens of the hidden camera 20 is oblique. It is preferable to be installed so as to face downward. When photographing just below, only the top of the head of the suspicious person S is photographed, and it is difficult to photograph the characteristics of the suspicious person S. If the hidden camera 20 is installed so as to photograph obliquely downward, it is possible to photograph the suspicious person's S's face, clothing and other decorations, etc., and more characteristics of the suspicious person S who has committed the crime You can shoot.

  In the monitoring camera 1, a light emitting member such as an LED may be installed on the surface of the case 11 on which the lens hood 12 is installed. It may be configured to pretend that the dummy camera 10 is photographing through the dummy lens 13 by performing a pseudo operation by light emission.

  Further, unlike the surveillance camera 2 shown in FIG. 5, the case 11 of the dummy camera 10 is not provided with a hole, and a part of the side wall is constituted by the translucent plate 16, and the hidden camera 20 is passed through the translucent plate 16. May be configured to capture the blind spot in the virtual imaging region of the dummy camera 10. In this case, the translucent plate 16 is configured as a smoke plate or the like so that the hidden camera 20 disposed inside cannot be visually recognized from the outside.

  Further, the shape of the case 11 of the dummy camera 10 is not limited to the quadrangular prism shape described above. For example, the shape of the case 11 may be a cylindrical shape like the monitoring camera 3 shown in FIG. Further, the shape of the case 11 may be a polygonal prism shape such as a pentagonal prism shape or a hexagonal prism shape in addition to a triangular prism shape like the monitoring camera 4 shown in FIG. If it is such a shape, the freedom degree of the installation position of the hidden camera 20 in the case 11 will increase, and when installing the surveillance camera 1, it does not need to incline as mentioned above. In addition, the shape of the case 11 may be any shape as long as the hidden camera 20 can be installed inside, such as a hemispherical shape.

  Further, the lens hood 12 and the dummy lens 13 may not be provided. In this case, it is only necessary that the camera is the monitoring camera 1 and that the shooting direction and shooting area of the first camera are recognized from the outside. For example, as in the monitoring camera 5 shown in FIG. 8, a translucent plate 17 may be installed in a part of the case 11 so that the camera is noticed to be the monitoring camera 5. In other words, the first camera may have any form as long as it can be recognized as if the first camera is actually photographing.

  In the above description, an example in which the first camera is the dummy camera 10 and no video is captured by the first camera has been described. However, the first camera may be a camera that can actually capture images. In this case, the suspicious person S can be photographed before or after the crime.

  Various embodiments and modifications can be made to the present invention without departing from the broad spirit and scope of the present invention. The above-described embodiments are for explaining the present invention and do not limit the scope of the present invention. In other words, the scope of the present invention is shown not by the embodiments but by the claims. Various modifications within the scope of the claims and within the scope of the equivalent invention are considered to be within the scope of the present invention.

1 surveillance camera 2 surveillance camera 3 surveillance camera 4 surveillance camera 5 surveillance camera 10 dummy camera (first camera)
11 Case 12 Lens Hood 13 Dummy Lens 14 Hole 15 Base 16 Translucent Plate 17 Translucent Plate 20 Hidden Camera (Second Camera)
31 Substrate 32 Wiring 33 Wiring S Suspicious person

Claims (7)

A first camera viewed from the outside;
A second camera installed inside the first camera,
The second camera is arranged in a different direction from the first camera, and captures a blind spot in an imaging region of the first camera;
A surveillance camera characterized by that. The first camera is a dummy camera;
The surveillance camera according to claim 1. The second camera takes a picture through a hole provided in the case of the first camera.
The surveillance camera according to claim 1 or 2, wherein A part of the case of the first camera has a light transmitting part, and the second camera takes an image through the light transmitting part.
The surveillance camera according to claim 1 or 2, wherein When the surveillance camera is installed, the second camera is arranged to take an image below the surveillance camera.
The surveillance camera according to any one of claims 1 to 4, wherein: The intersection angle between the optical axis of the lens of the first camera and the optical axis of the lens of the second camera is 80 to 100 °.
The surveillance camera according to any one of claims 1 to 5, wherein: The second camera is a pinhole lens camera;
The surveillance camera according to claim 1, wherein:

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