JP4887528B2 - Optical cable connection closure - Google Patents

Description

  The present invention relates to an optical cable connection closure for connecting optical fiber core wires in an aerial manner, and more particularly to an optical cable connection closure improved so as to be utilized as an outdoor information collection system.

In recent years, crimes and incidents targeting vulnerable people, such as children and women, have increased rapidly. To prevent such crimes and incidents, in recent elementary schools, etc., in order to protect students from crimes and accidents, students should have IC chips and parents should be aware of the passage time and place of passage of students when going to and from school. Some have used information collection systems to distribute.
However, location management and passing point management using an IC chip does not involve video information, so collected information is scarce and the situation when an incident occurs cannot be determined.

Therefore, it is desirable to install an information collection system that can collect video information. For example, in shopping streets and shopping streets, a system for installing a video camera for crime prevention and storing the video of the video camera for a certain period is widespread. .
In addition, as a system that can collect video information outdoors in the event of a disaster, etc., the camera equipment is connected to an optical information outlet for outdoor burial, and the video is transmitted via an optical fiber network connected to the optical information outlet for outdoor burial. What is collected and managed has also been proposed (see, for example, Patent Document 1).

JP-A-8-149083

  However, the video cameras for crime prevention installed in the shopping streets and busy streets mentioned above contain the video camera body in a special case with high performance waterproofness, and support for the camera installation poles etc. Since structures often need to be built, the deployment cost per camera is high.

  In addition, in the case of video cameras for crime prevention in shopping streets and busy streets, etc., the number of installations is small, and information is collected in a spot manner. For example, information should be collected over a wide area in order to elucidate escape routes of criminals, etc. The effect was limited because it was not possible.

  In the case of an information system that connects photography equipment to an outdoor buried optical information outlet, when an incident or disaster occurs, connect the photography equipment to an outdoor buried optical information outlet near the point of occurrence. It is not a permanent information collection system, so it is inadequate for the purpose of collecting video etc. at the time of occurrence of a sudden incident, etc., and not suitable for crime prevention etc. .

On the other hand, in recent years, with the spread of Internet communication, FTTH (Fiber To The Home), which is a form that directly draws an optical fiber to a subscriber's house, has shown rapid spread. The number of installation locations of optical cable connection closures connected to optical fiber cables is increasing rapidly.
FIG. 4 shows an installation form of the optical cable connection closure 1.
This optical cable connection closure 1 is a case of a cylindrical structure with waterproofness and weather resistance, and is suspended by an imaginary suspension line 3 supported by a utility pole 2 or the like near a subscriber's house. The necessary number of cores (1 to 2 cores / subscriber's house) is pulled down from the imaginary optical cable 5, and a drop cable to be drawn into the subscriber's house is connected.

Since such an optical cable connection closure 1 is installed near a utility pole 2 standing on the side of a sidewalk or the like, if it can be used as an information collection system, it collects the situation that occurs on the sidewalk or the like. Is extremely effective.
Further, since the optical cable connection closure 1 is a permanent facility deployed over a wide area, if it can be used as an information collection system, it can collect wide area information in a linear time, which is extremely useful for crime prevention. It is valid.
In addition, since the optical cable connection closure 1 is a case of a cylindrical structure having waterproofness and weather resistance, if the optical cable connection closure 1 is used as a housing case for the photographing equipment, the photographing equipment is a dedicated waterproof case. Such equipment is no longer necessary, and a significant cost reduction can be expected.
However, the conventional optical cable connection closure is not considered at all for use as such a video information collecting system.

  An object of the present invention relates to solving the above-described problems, and is an optical cable connection that can efficiently collect video information over a wide area and can construct an information collection system for crime prevention targeting a wide area at low cost. The purpose is to provide a closure.

(1) In order to solve the above-described problems, an optical cable connection closure according to the present invention is an optical cable connection closure equipped with an optical cable housing portion for interconnecting optical fiber core wires in an aerial manner.
The case main body is equipped with photographing equipment for photographing the outside of the case main body.

  (2) Further, the optical cable connection closure described in the above (1) may be provided with a photoelectric conversion device for supplying power to the photographing equipment.

  (3) In addition, the optical cable connection closure described in (1) or (2) above enables video information captured by the imaging equipment to be transmitted via an optical fiber core housed in the optical cable housing section. It is good also as being characterized.

According to the optical cable connection closure according to the present invention, since it is a permanent installation, it is possible to constantly monitor the situation of the sidewalk, etc., where the optical cable connection closure is installed, using the built-in photography equipment, and the optical cable connection closure is deployed in a wide area. Therefore, if video information is collected from each optical cable connection closure, the video information can be efficiently collected over a wide area.
In addition, the optical cable connection closure is premised on outdoor installation and has high waterproofness and light resistance, so the photography equipment installed inside it can omit expensive waterproof cases or waterproof performance Can be reduced.

DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments of an optical cable connection closure according to the invention will be described in detail with reference to the drawings.
FIG. 1 is an external perspective view of an embodiment of an optical cable connection closure according to the present invention, FIG. 2 is a perspective view showing an internal configuration of a case body of the optical cable connection closure shown in FIG. 1, and FIG. It is a perspective view of the state which installed the closure for optical cable connection shown in the aerial.

  The optical cable connection closure 11 of this embodiment is composed of a case main body (closure main body) 13 having an open front surface and a lid body 14 that covers the front opening of the case main body 13 so as to be openable and closable. 13 is equipped with an optical cable housing portion 15 as a processing space for interconnecting optical fiber core wires in an aerial manner.

At both ends of the case body 13, cable lead-in / out portions 17 are provided for leading and inserting the imaginary optical cable 5 and the drop cable 7.
The cable lead-in / out part 17 is formed of a rubber material that is in close contact with the inserted cable, and prevents rainwater or the like from entering the case body 13 through the cable.
In addition, a high degree of waterproofness and light resistance are ensured by appropriately installing a packing at the mating portion of the case body 13 and the lid body 14 or adopting a structure in which the respective edges overlap. .

The drop cable 7 is an optical fiber core drawn into the subscriber's house, and is connected to the optical fiber core 5 a constituting the optical cable 5 in the case body 13.
A frame 16 serving as a support structure is fixedly installed in the case body 13, and the frame 16 is suspended by the suspension line 3 by providing a fixing portion to the imaginary suspension line 3 (see FIG. 4). It is like that.

  In the optical cable connection closure 11 of the present embodiment, a connection portion accommodation tray 21 that accommodates a connection portion between the optical fiber core wire 5 a and the drop cable 7 is provided in a multi-layered manner at a substantially central portion in the case body 13. Further, a cable gripping portion 22 for gripping a cable to be led in / out is provided in the vicinity of the cable lead in / out portion 17 at both ends.

In the case main body 13, it is easy to secure an empty space on both sides of the connection portion accommodation tray 21.
In the case of the present embodiment, using this empty space, photographing equipment 26 for photographing the outside from the window portion 24 formed in the case main body 13 is provided on both sides of the connection portion accommodation tray 21.

  In the case of the present embodiment, the window 24 has a configuration in which a circular opening formed at the bottom of the case body 13 is covered with a transparent cover, but when the photographing equipment 26 itself is waterproof, The transparent cover may be omitted, and a fine gap between the case main body 13 and the lid body 14 may be used as the window portion 24.

The photographic equipment 26 includes a digital video camera that shoots a moving image and a signal conversion device that outputs video information captured by the video camera as an optical signal. The output terminal of the signal conversion device includes an optical cable housing 15. The optical fiber core 5a accommodated in the optical fiber core 5a is connected, and the video information captured by the imaging equipment 26 is connected to the optical fiber network to which the optical fiber core 5a belongs via the optical fiber core 5a. It can be transmitted to the local information management device.
The photographing equipment 26 is fixedly mounted on the frame 16 in the case body 13.

A photoelectric conversion device 28 that supplies power to the photographing equipment 26 is disposed on the outer surface of the case body 13.
The photoelectric conversion device 28 includes, for example, a solar panel that receives sunlight to generate electric power and a secondary battery such as a lithium ion battery that stores electric power generated by the solar panel. By supplying power to, video information can be collected even at night.

  According to the optical cable connection closure 11 described above, since it is a permanent installation on the side of the sidewalk, the situation of the sidewalk, etc., where the optical cable connection closure 11 is installed can be constantly monitored by the built-in photography equipment 26. Since the optical cable connection closures 11 are arranged in a wide area, video information can be efficiently collected over a wide area by collecting video information from the respective optical cable connection closures 11.

In addition, since the optical cable connection closure 11 is premised on outdoor installation and has high waterproofness and light resistance, the photographing equipment 26 installed therein omits an expensive waterproof case, The waterproof performance can be reduced, and it is not necessary to construct a support structure such as a pole that supports the video camera as in the case of installing a video camera for crime prevention. Cost can be greatly reduced.
Therefore, it is possible to construct a crime prevention information collecting system for a wide area at a low cost.

In the optical cable connection closure 11 of the above embodiment, the photoelectric conversion device 28 that supplies power to the photographing equipment 26 is disposed on the outer surface of the case body 13.
Therefore, each optical cable connection closure can supply power to the photographing equipment 26 by itself, and it is not necessary to lay a power supply network for a large number of optical cable connection closures 11, thereby reducing the construction cost as an information collection system. can do.

Further, in the optical cable connection closure 11 of the above-described embodiment, the optical fiber core wire 5a belongs to the video information captured by the photographing equipment 26 via the optical fiber core wire 5a accommodated in the optical cable housing portion 15. The information management apparatus connected to the optical fiber network can be transmitted.
Therefore, it is not necessary to construct a new communication network for information transmission, and an information collection system can be constructed at a low cost and in a wide area. For example, when a crime occurs, the escape route of the criminal is clarified. Therefore, information collection can be easily realized in a wide area. The video information taken by the photographic equipment 26 is recorded on a recording medium housed in the optical cable connection closure 11 in addition to being transmitted via the optical fiber core wire 5a, and the video information is updated at a predetermined cycle. May be.

1 is an external perspective view of an embodiment of an optical cable connection closure according to the present invention. It is a perspective view which shows the structure inside the case main body of the closure for optical cable connection shown in FIG. It is a perspective view of the state which installed the optical cable connection closure shown in FIG. 1 in the aerial. It is a schematic perspective view which shows the installation state of the existing optical cable connection closure.

Explanation of symbols

DESCRIPTION OF SYMBOLS 5 Optical cable 5a Optical fiber core wire 7 Drop cable 11 Optical cable connection closure 13 Case main body 14 Cover body 15 Optical cable accommodating part 16 Frame 17 Cable lead-in / out part 24 Window part 26 Photography equipment 28 Photoelectric conversion apparatus

Claims (1)

An optical cable connection closure equipped with an optical cable housing portion for interconnecting optical fiber core wires in an aerial manner inside the case body,
Inside the case body, equipped with photographic equipment to shoot the situation around the closure ,
A photoelectric conversion device that receives sunlight to generate power and supply power to the photographic equipment is disposed on the outer surface of the case body,
An optical fiber core housed in the optical cable housing portion is connected to the photographing equipment, and image information captured by the photographing equipment is transmitted through the optical fiber core wire connected to the photographing equipment. A closure for connecting an optical cable, wherein the closure is transmitted to an information management device connected to an optical fiber network to which the line belongs .

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