JP2022075297A

JP2022075297A - Television home receiving system for disaster prevention administration radio

Info

Publication number: JP2022075297A
Application number: JP2020185993A
Authority: JP
Inventors: 寛至松原; Hiroshi Matsubara; 太一工藤; Taichi Kudo; 丞士藤高; Joji Fujitaka; 尚人三上; Naohito Mikami; 真也田中; Shinya Tanaka
Original assignee: Suncorporation
Current assignee: Suncorporation
Priority date: 2020-11-06
Filing date: 2020-11-06
Publication date: 2022-05-18
Anticipated expiration: 2040-11-06
Also published as: JP7549770B2

Abstract

To provide a system which can receive disaster prevention administration radio even during a power outage by connecting an individual home receiver to a wall-face television terminal in any room of a television home receiving system.SOLUTION: An amplifier unit (a) for disaster prevention administration radio is provided in an amplifier 8 which is equipped in the television home receiving system which receives digital terrestrial digital broadcast etc. The amplifier unit is generally operated by an amplifier power supply unit (f) which is operated on commercial power. At power outage, the amplifier unit (a) for disaster prevention administration radio is operated by a power storage device (e) which is charged by power supplied from the amplifier power supply unit (f). The amplified disaster prevention administration radio signal is distributed and transmitted at all times through a distributor 5 to the wall-face television terminal 6 provided in each room, so that the disaster prevention administration radio can be received anytime by the connection of a home receiver 7 to the wall-face television terminal 6 in a desired room.SELECTED DRAWING: Figure 3

Description

本発明は、防災行政無線のテレビホーム受信システムに関し、さらに言えば、地上デジタル放送や衛星放送を受信する所謂テレビホーム受信システムで、停電時でもいつでも所望の部屋で戸別受信機を壁面テレビ端子に接続して防災行政無線を受信できるシステムの技術分野に属する。 The present invention relates to a TV home receiving system for disaster prevention administrative radio, and more specifically, it is a so-called TV home receiving system that receives terrestrial digital broadcasting and satellite broadcasting. It belongs to the technical field of systems that can be connected and receive disaster prevention administrative radio.

現在、防災行政無線は、全国の市町村単位で運営されており、近年、防災行政無線のデジタル化が進められている。この防災行政無線に使用される無線周波数は決まった帯域幅の中で運用され、限られた電波資源の中で干渉を起こさないために電波出力をなるべく弱くするよう定められている。
そのため、室内に設置される防災行政無線受信用戸別受信機は、デジタル化されても戸別受信機に搭載されたロッドアンテナでは受信できない家や、戸別受信機設置時は受信できていても到来電波がフェージング等により変動して受信できなくなる。この場合、屋外アンテナを設置して壁に穴をあけケーブルを引き込む必要があり、室内において配線ケーブルが大変邪魔になる。また、壁に穴をあけることを拒む家も多いため、戸別受信機の普及に大きな障害となっている。
また、防災行政無線は市町村の役場から電波が送信されているため、例えば、役場から南東方向や南および南西方向の土地に建っている家は、防災行政無線の電波が家の北側や北東および北西の方向から到達することになり、その方角から穴をあけ家の中にケーブルを引き込む場合、居間までの距離が遠くなる。また、戸別受信機を移動させたいときにはケーブルを配線しなおすなど大変厄介である。
一方、家が建築されるときには、通常地上デジタル放送や衛星放送を受信するためのアンテナや、同軸ケーブル、分配器、壁面テレビ端子等が完備された所謂ホーム受信システムが備え付けられるが、そこに上記した防災行政無線を組み込めないか、本出願人は着目している。 Currently, the disaster prevention administrative radio is operated in units of municipalities nationwide, and in recent years, the digitization of the disaster prevention administrative radio has been promoted. The radio frequency used for this disaster prevention administrative radio is operated within a fixed bandwidth, and it is stipulated that the radio wave output should be as weak as possible so as not to cause interference in the limited radio wave resources.
Therefore, the door-to-door receiver for disaster prevention administrative radio reception installed indoors can not be received by the rod antenna mounted on the door-to-door receiver even if it is digitized, or even if it can be received when the door-to-door receiver is installed, the incoming radio wave However, it fluctuates due to fading etc. and cannot be received. In this case, it is necessary to install an outdoor antenna, make a hole in the wall, and pull in the cable, and the wiring cable becomes a great obstacle in the room. In addition, many homes refuse to make holes in the walls, which is a major obstacle to the widespread use of door-to-door receivers.
In addition, since the disaster prevention administration radio is transmitted from the municipal office, for example, in a house built on land in the southeast direction, southeast direction, and southwest direction from the office, the radio wave of the disaster prevention administration radio is transmitted to the north side, northeast, and northwest of the house. It will be reached from the northwest direction, and if you make a hole from that direction and pull the cable into the house, the distance to the living room will be long. Also, when you want to move the receiver for each door, it is very troublesome to rewire the cable.
On the other hand, when a house is built, a so-called home reception system equipped with an antenna for receiving terrestrial digital broadcasting and satellite broadcasting, a coaxial cable, a distributor, a wall TV terminal, etc. is usually installed. The applicant is paying attention to whether or not the disaster prevention administrative radio can be incorporated.

これに関し、例えば下記特許文献１には、防災無線放送受信機および防災行政無線システムが記載されている。同文献１の符号を援用すると、防災無線信号を受信する防災無線受信回路１２と、通常の放送信号を受信し、局部発振信号に基づき中間周波信号を得るＡＭ／ＦＭ受信回路１３と、防災無線受信回路１２とＡＭ／ＦＭ受信回路１３とで、共用可能なオーディオアンプ１４と、防災無線受信回路１２とＡＭ・ＦＭ受信回路１３の出力をオーディオアンプ１４に選択的に入力する切替スイッチ１６と、防災無線信号を受信して無い場合にはＡＭ／ＦＭ受信回路１３の出力を選択し防災無線信号を受信している場合には防災無線受信回路１２の出力を選択するように切替スイッチ１６に指示するスケルチ回路１２２と、を有し、ＦＭ放送受信回路の局部発振周波数が中間周波数分だけＦＭ放送信号の周波数に加算するように設定される。また、同文献１の段落番号［００１７］［００１８］には、防災無線放送受信機１は、主構成要素の一つの受信アンテナ１１は、親局１０１からの防災無線信号を受信したり、一般に放送されているＡＭ／ＦＭ放送を受信するアンテナであり、防災無線受信回路１２とＡＭ／ＦＭ受信回路１３と共用される旨記載されている。 In this regard, for example, Patent Document 1 below describes a disaster prevention radio broadcast receiver and a disaster prevention administrative radio system. When the reference numerals of the same document 1 are used, the disaster prevention radio receiving circuit 12 for receiving the disaster prevention radio signal, the AM / FM receiving circuit 13 for receiving the normal broadcast signal and obtaining the intermediate frequency signal based on the locally oscillated signal, and the disaster prevention radio. An audio amplifier 14 that can be shared between the receiving circuit 12 and the AM / FM receiving circuit 13, a changeover switch 16 that selectively inputs the outputs of the disaster prevention radio receiving circuit 12 and the AM / FM receiving circuit 13 to the audio amplifier 14. Instructs the changeover switch 16 to select the output of the AM / FM reception circuit 13 when the disaster prevention radio signal is not received, and to select the output of the disaster prevention radio reception circuit 12 when the disaster prevention radio signal is received. The squelch circuit 122 is set so that the local oscillation frequency of the FM broadcast receiving circuit is added to the frequency of the FM broadcast signal by the intermediate frequency. Further, in paragraph numbers [0017] [0018] of the same document 1, in the disaster prevention radio broadcast receiver 1, the receiving antenna 11 which is one of the main components receives the disaster prevention radio signal from the master station 101, and generally. It is described that it is an antenna that receives the AM / FM broadcast that is being broadcast, and is shared with the disaster prevention radio reception circuit 12 and the AM / FM reception circuit 13.

特開２００７－４３６４１特開2007-43641公報JP-A-2007-43641 JP-A-2007-43641

前記特許文献１に開示された防災無線放送受信機および防災行政無線システムは、通常放送受信回路の局部発振信号の影響を抑止でき、防災無線受信機の受信能力の低下を防止できるが、デジタル化が進む防災行政無線を、どこでもいつでも受信できるようにするためには、屋外アンテナを設置して、壁に穴をあけケーブルを引き込む必要がある。
ところで、小規模なテレビホーム受信システムでは、戸建て住宅などで２つの部屋に分配するシステムから８分配するシステムなどがある。分配する端子数が少ない場合は分配損失が少ないため増幅器なしで壁面テレビ端子に信号を伝達できる。したがって、このようなシステムの地上デジタル放送用アンテナの出力ケーブルに混合器を設置し、屋外に設置された防災行政無線用アンテナの出力を混合して、壁面テレビ端子へ戸別受信機を接続し、どの壁面テレビ端子でも受信できるように案出した。
また、テレビホーム受信システムでは、分配する端子数が増えると信号の減衰が大きくなるため、分配器の前に増幅器が必要になってくる。この増幅器には屋外に設置されるものと屋内に設置されるものの２種類がある。屋外に設置されるものは屋内に設置された商用電源１００Ｖで動作する電源部からテレビホーム受信システムの壁面テレビ端子や分配器を通過して屋外に設置された増幅器にＤＣ１５Ｖが供給される。屋内に設置される増幅器は商用電源１００Ｖに接続されて動作をしている。どちらの増幅器も停電になれば動作を停止してしまう。しかし、防災行政無線は停電時でも緊急連絡があれば受信する必要があるので、この点が解決すべき重要課題となっている。
したがって、本発明は上記課題に鑑みて案出されたものであり、その目的は、地上デジタル放送や衛星放送を受信するテレビホーム受信システムを利用して、場合によっては増幅器を設置し、どの部屋でも戸別受信機を壁面テレビ端子に接続して、停電時でもいつでも所望の部屋で防災行政無線を受信できて防災対策に資する防災行政無線のテレビホーム受信システムを提供することにある。 The disaster prevention radio broadcast receiver and the disaster prevention administrative radio system disclosed in Patent Document 1 can suppress the influence of the local oscillation signal of the normal broadcast reception circuit and can prevent the reception ability of the disaster prevention radio receiver from deteriorating, but are digitized. In order to be able to receive the disaster prevention administrative radio that is advancing anytime, anywhere, it is necessary to install an outdoor antenna, make a hole in the wall, and pull in the cable.
By the way, in a small-scale TV home reception system, there is a system that distributes to two rooms to a system that distributes to eight in a detached house or the like. When the number of terminals to be distributed is small, the distribution loss is small, so the signal can be transmitted to the wall-mounted TV terminals without an amplifier. Therefore, a mixer is installed in the output cable of the terrestrial digital broadcasting antenna of such a system, the output of the disaster prevention administrative radio antenna installed outdoors is mixed, and the door-to-door receiver is connected to the wall-mounted TV terminal. I devised so that it could be received by any wall TV terminal.
Further, in a television home reception system, as the number of terminals to be distributed increases, the signal attenuation increases, so that an amplifier is required in front of the distributor. There are two types of this amplifier, one installed outdoors and one installed indoors. For those installed outdoors, DC15V is supplied from a power supply unit operating indoors with a commercial power supply of 100V to an amplifier installed outdoors through a wall TV terminal or a distributor of a TV home receiving system. The amplifier installed indoors is connected to a commercial power supply of 100V and operates. Both amplifiers will stop operating in the event of a power outage. However, the disaster prevention administrative radio needs to be received even in the event of a power outage if there is an emergency call, so this is an important issue to be resolved.
Therefore, the present invention has been devised in view of the above problems, and an object thereof is to utilize a television home receiving system for receiving terrestrial digital broadcasting or satellite broadcasting, and in some cases to install an amplifier, which room. However, the purpose is to provide a TV home reception system for disaster prevention administrative radio that contributes to disaster prevention measures by connecting a door-to-door receiver to the wall-mounted TV terminal so that the disaster prevention administrative radio can be received in the desired room at any time even during a power outage.

上記の課題を解決するための手段として、請求項１に記載した発明は、地上デジタル放送や衛星放送を受信するテレビホーム受信システムにおいて、
前記地上デジタル放送や衛星放送を受信するアンテナ１、２の同軸ケーブル１０、２０を接続する混合器４（ｈ）に、防災行政無線用のアンテナ３の同軸ケーブル３０を混合させる端子を設けて防災行政無線の信号が混合され、若しくは、地上デジタル放送を受信するアンテナ１の同軸ケーブル１０の途中に防災行政無線用の混合器４（ｇ）が設置され、その混合器４（ｇ）に防災行政無線のアンテナ３の同軸ケーブル３０が接続されその信号が混合され、
分配器５を通じて各部屋の壁面テレビ端子６に、前記防災行政無線の信号が分配供給され、所望の部屋の壁面テレビ端子６に防災行政無線の戸別受信機７を接続することにより、防災行政無線が受信自在に構成されていることを特徴とする、防災行政無線のテレビホーム受信システムである。 As a means for solving the above problems, the invention according to claim 1 is a television home receiving system for receiving terrestrial digital broadcasting and satellite broadcasting.
Disaster prevention by providing a terminal for mixing the coaxial cable 30 of the antenna 3 for disaster prevention administration radio in the mixer 4 (h) connecting the coaxial cables 10 and 20 of the antennas 1 and 2 for receiving the terrestrial digital broadcasting and satellite broadcasting. A mixer 4 (g) for disaster prevention administrative radio is installed in the middle of the coaxial cable 10 of the antenna 1 to which signals of the administrative radio are mixed or receive terrestrial digital broadcasting, and the mixer 4 (g) is used for disaster prevention administration. The coaxial cable 30 of the wireless antenna 3 is connected, the signal is mixed, and the signal is mixed.
The signal of the disaster prevention administrative radio is distributed and supplied to the wall TV terminal 6 of each room through the distributor 5, and the disaster prevention administrative radio is connected to the wall TV terminal 6 of the desired room by connecting the door-to-door receiver 7 of the disaster prevention administrative radio. Is a TV home reception system for disaster prevention administrative radio, which is characterized by being freely receivable.

請求項２に記載した発明は、地上デジタル放送や衛星放送を受信するテレビホーム受信システムにおいて、
前記地上デジタル放送及び衛星放送並びに防災行政無線をそれぞれ受信するアンテナ１、２、３の同軸ケーブル１０、２０、３０が混合器４を介して接続される増幅器８、若しくはそれぞれの同軸ケーブル１０、２０、３０が直接接続される増幅器８の中に、防災行政無線用の信号を増幅する帯域を有する防災行政無線用増幅部ａがあり、その防災行政無線用増幅部ａは、商用電源で動作する増幅部用電源部ｆで通常動作され、停電時には、前記増幅部用電源部ｆから供給されている電源で充電されている蓄電装置ｅで前記防災行政無線用増幅部ａは動作され、
分配器５を通じて各部屋の壁面テレビ端子６に、前記増幅された防災行政無線の信号が常時分配伝送され、所望の部屋の壁面テレビ端子６に防災行政無線の戸別受信機７を接続することにより、防災行政無線がいつでも受信可能に構成されていることを特徴とする、防災行政無線のテレビホーム受信システムである。 The invention described in claim 2 is a television home receiving system for receiving terrestrial digital broadcasting and satellite broadcasting.
The amplifier 8 to which the coaxial cables 10, 20, and 30 of the antennas 1, 2, and 3 for receiving the terrestrial digital broadcasting, satellite broadcasting, and disaster prevention administrative radio are connected via the mixer 4, or the respective coaxial cables 10, 20. In the amplifier 8 to which the 30 and 30 are directly connected, there is a disaster prevention administrative radio amplification unit a having a band for amplifying a signal for disaster prevention administrative radio, and the disaster prevention administrative radio amplification unit a operates on a commercial power source. The power storage unit f for the amplification unit normally operates, and in the event of a power failure, the power storage device e charged with the power supplied from the power supply unit f for the amplification unit operates the amplification unit a for disaster prevention administrative radio.
The amplified signal of the disaster prevention administrative radio is constantly distributed and transmitted to the wall TV terminal 6 of each room through the distributor 5, and the door-to-door receiver 7 of the disaster prevention administrative radio is connected to the wall TV terminal 6 of the desired room. , It is a TV home reception system of the disaster prevention administration radio, which is characterized by being configured so that the disaster prevention administration radio can be received at any time.

請求項３記載した発明は、前記増幅器８が情報分電盤９の中に設置され、前記増幅器８の防災行政無線用のアンテナ３が接続自在な入力端子８０に、予め接続された同軸ケーブル３０の他側が外壁面ｔの屋外側に配設され、若しくは情報分電盤9からＣＤ管が外壁面ｔの屋外に配設され、必要に応じて同軸ケーブル３０を前記ＣＤ管に挿通し前記入力端子８０に接続されることにより、いずれかの前記同軸ケーブル３０の他側に防災行政無線用のアンテナ３が接続可能に構成されていることを特徴とする、請求項２に記載した防災行政無線のテレビホーム受信システムである。 In the invention described in claim 3, the coaxial cable 30 in which the amplifier 8 is installed in the information distribution board 9 and the antenna 3 for disaster prevention administrative radio of the amplifier 8 is connected in advance to the input terminal 80 to which the antenna 3 can be connected. The other side is arranged on the outdoor side of the outer wall surface t, or the CD tube is arranged outside the outer wall surface t from the information distribution board 9, and the coaxial cable 30 is inserted into the CD tube as necessary and the input is made. The disaster prevention administrative radio according to claim 2, wherein the antenna 3 for the disaster prevention administrative radio can be connected to the other side of any of the coaxial cables 30 by being connected to the terminal 80. TV home reception system.

請求項４記載した発明は、屋外に設置される前記防災行政無線を受信するアンテナ３は、筒状体の中にコイル状に形成したアンテナ素子を装填して小型化されていることを特徴とする、請求項１～３のいずれか１項に記載した防災行政無線のテレビホーム受信システムである。 The invention according to claim 4 is characterized in that the antenna 3 for receiving the disaster prevention administrative radio installed outdoors is miniaturized by loading an antenna element formed in a coil shape into a tubular body. The TV home reception system of the disaster prevention administrative radio according to any one of claims 1 to 3.

本発明の請求項１に係る防災行政無線のテレビホーム受信システムは、地上デジタル放送や衛星放送を受信するテレビホーム受信システムを利用して、防災行政無線の信号を混合させ、分配器を通じて各部屋の壁面テレビ端子に記防災行政無線の信号が分配供給されるので、所望の部屋の壁面テレビ端子に防災行政無線の戸別受信機を接続することにより、わざわざ壁に穴をあけて、屋外に設置の防災行政無線専用のアンテナからの同軸ケーブルを通して希望する部屋まで引き込んで受信する必要がなく、防災行政無線を簡便かつ確実に受信できる利便性がある。
また、請求項２に係る防災行政無線のテレビホーム受信システムは、地上デジタル放送や衛星放送を受信するテレビホーム受信システムに装備された増幅器の中に、防災行政無線用の信号を増幅する帯域を有する防災行政無線用増幅部があり、その防災行政無線用増幅部は、商用電源で動作する増幅部用電源部で通常動作され、停電時には、増幅部用電源部から供給されている電源で充電されている蓄電装置で防災行政無線用増幅部は動作され、分配器を通じて各部屋の壁面テレビ端子に、増幅された防災行政無線の信号が常時分配伝送されるので、どの部屋でも戸別受信機を壁面テレビ端子に接続して、停電時でもいつでも所望の部屋で防災行政無線を受信できて防災対策に貢献する。とりわけ、昨今各地で発生している川の氾濫などで1階部分が水没するような場合であっても、戸別受信機を２階に持込んで壁面テレビ端子に接続することにより、すでに停電になっていても防災行政無線の帯域は防災行政無線用増幅部が蓄電装置で動作しているため、安心して引き続き防災無線を聞くことができる自在性に優れ、防災対策に万全である。
さらに、請求項３のように、情報分電盤の中に増幅器を設置し、その増幅器の防災行政無線用のアンテナが接続自在な入力端子に、予め接続された出力ケーブルの他側を外壁面の屋外側に配設したり、前記情報分電盤からＣＤ管を外壁面の屋外に配設しておけば、必要に応じて防災行政無線受信アンテナの出力ケーブルを前記ＣＤ管に挿通して入力端子に接続でき、また、前記出力ケーブルの他側に、防災行政無線用のアンテナを容易に接続でき便利である。
しかも、請求項４のように、屋外に設置される前記防災行政無線を受信するアンテナを、筒状体の中にコイル状に形成したアンテナ素子を装填してコンパクトに実施すれば、同アンテナの屋外での設置が容易な上、防災行政無線の電波を高感度で受信でき、自然災害情報のリアルタイムかつ正確な受信の実現に寄与する。 The TV home receiving system of the disaster prevention administrative radio according to claim 1 of the present invention uses the TV home receiving system that receives terrestrial digital broadcasting and satellite broadcasting, mixes the signals of the disaster prevention administrative radio, and makes each room through a distributor. Since the signal of the disaster prevention administrative radio is distributed and supplied to the wall TV terminal of, by connecting the door-to-door receiver of the disaster prevention administrative radio to the wall TV terminal of the desired room, a hole is purposely made in the wall and installed outdoors. There is no need to pull in to the desired room through the coaxial cable from the antenna dedicated to the disaster prevention administration radio, and there is the convenience of being able to receive the disaster prevention administration radio easily and reliably.
Further, the TV home receiving system of the disaster prevention administrative radio according to claim 2 has a band for amplifying the signal for the disaster prevention administrative radio in the amplifier installed in the TV home receiving system for receiving terrestrial digital broadcasting and satellite broadcasting. There is an amplification unit for disaster prevention administrative radio that it has, and the amplification unit for disaster prevention administrative radio is normally operated by the power supply unit for the amplification unit that operates with a commercial power supply, and in the event of a power failure, it is charged by the power supply supplied from the power supply unit for the amplification unit. The power storage device is used to operate the amplification unit for disaster prevention administration radio, and the amplified disaster prevention administration radio signal is constantly distributed and transmitted to the wall TV terminal of each room through the distributor. By connecting to the wall TV terminal, you can receive the disaster prevention administrative radio in the desired room at any time even in the event of a power outage, contributing to disaster prevention measures. In particular, even if the first floor is submerged due to the flooding of rivers that has occurred in various places these days, by bringing the receiver to the second floor and connecting it to the wall TV terminal, a power outage has already occurred. Even if it is, the band of the disaster prevention administrative radio is excellent in the flexibility to continue listening to the disaster prevention radio with peace of mind because the amplification unit for the disaster prevention administrative radio is operated by the power storage device, and it is perfect for disaster prevention measures.
Further, as in claim 3, an amplifier is installed in the information distribution board, and the other side of the output cable connected in advance to the input terminal to which the antenna for the disaster prevention administrative radio of the amplifier can be connected is connected to the outer wall surface. If the CD tube is placed outdoors on the outer wall surface from the information distribution board, the output cable of the disaster prevention administrative radio receiving antenna can be inserted into the CD tube as needed. It can be connected to the input terminal, and the antenna for disaster prevention administrative radio can be easily connected to the other side of the output cable, which is convenient.
Moreover, as in claim 4, if the antenna for receiving the disaster prevention administrative radio wave installed outdoors is compactly implemented by loading an antenna element formed in a coil shape in a tubular body, the antenna can be used. In addition to being easy to install outdoors, it can receive radio waves from the disaster prevention administration radio with high sensitivity, contributing to the realization of real-time and accurate reception of natural disaster information.

本発明の防災行政無線のテレビホーム受信システムを示す構成図である。It is a block diagram which shows the television home reception system of the disaster prevention administration radio of this invention. 屋外で増幅器を使用した防災行政無線のテレビホーム受信システムを示す構成図である。It is a block diagram which shows the TV home reception system of the disaster prevention administration radio using an amplifier outdoors. 屋内で増幅器を使用した防災行政無線のテレビホーム受信システムを示す構成図である。It is a block diagram which shows the TV home reception system of the disaster prevention administration radio using an amplifier indoors. 屋外で混合された防災行政無線等の信号を１本の同軸ケーブルを屋内に通し、屋内で増幅器を使用した防災行政無線のテレビホーム受信システムを示す構成図である。It is a block diagram which shows the television home reception system of the disaster prevention administration radio which used the amplifier indoors by passing the signal of the disaster prevention administration radio mixed outdoors through one coaxial cable indoors. 防災行政無線のテレビホーム受信システムの増幅器を情報分電盤に設置した状況を示す斜視図である。It is a perspective view which shows the situation which the amplifier of the television home reception system of the disaster prevention administration radio is installed in the information distribution board. 防災行政無線用アンテナ等の屋外設置状況を示す説明図である。It is explanatory drawing which shows the outdoor installation situation such as the antenna for disaster prevention administration radio.

本発明の防災無線の防災行政無線のテレビホーム受信システムの好適な実施形態を、以下図面にしたがって説明する。本受信システムは、地上デジタル放送や衛星放送を受信するテレビホーム受信システムに適用して実施される。
この防災行政無線のテレビホーム受信システムは、各家庭で一般的に普及している小規模のテレビホーム受信システムに、混合器４を追加するだけで防災行政無線用の屋外アンテナ３を設置でき、その信号を各部屋に設置されている壁面テレビ端子６まで伝送できるシステムである。屋外に防災行政無線専用の屋外アンテナ３を設置するために、外壁に穴をあけてアンテナからの同軸ケーブルを通し希望する部屋まで引き込んで受信する必要がない。 A preferred embodiment of the TV home receiving system of the disaster prevention administrative radio of the present invention will be described below with reference to the drawings. This receiving system is applied to a television home receiving system that receives terrestrial digital broadcasting and satellite broadcasting.
This disaster prevention administration radio TV home reception system can install an outdoor antenna 3 for disaster prevention administration radio simply by adding a mixer 4 to a small-scale TV home reception system that is generally popular in each home. It is a system that can transmit the signal to the wall-mounted TV terminal 6 installed in each room. In order to install the outdoor antenna 3 dedicated to the disaster prevention administrative radio outdoors, it is not necessary to make a hole in the outer wall and pull the coaxial cable from the antenna to the desired room for reception.

図１に示したように、本システムは、地上デジタル放送を受信するアンテナ１の出力ケーブルである同軸ケーブル１０の途中に、防災行政無線用の混合器４（ｇ）が設置され、その混合器４（ｇ）に防災行政無線のアンテナ３の出力ケーブルである同軸ケーブル３０が接続されその信号が混合されると共に、衛星放送用アンテナ２の同軸ケーブル２０を混合する混合器４（ｈ）に接続され、それらの信号が混合されている。あるいは、地上デジタル放送や衛星放送を受信するアンテナ１、２の同軸ケーブル（出力ケーブル）１０、２０を混合する混合器４（ｈ）に、防災行政無線用のアンテナ３の同軸ケーブル３０を混合させる端子を設けて防災行政無線を混合し、その混合器４（ｈ）に防災行政無線のアンテナ３の同軸ケーブル３０を混合する実施形態も採用可能である（図示は省略）。
そして、前記混合器４（ｈ）に接続した分配器５を通じて、各同軸ケーブル５０で接続された各部屋の壁面テレビ端子６に、前記防災行政無線の信号が分配供給され、所望の部屋の壁面テレビ端子６に防災行政無線の戸別受信機７を接続するだけで、防災行政無線が受信自在になっている。なお、同図示例では、２分配された一つの壁面テレビ端子６にテレビｍが接続されている。
したがって、壁面テレビ端子６がリビングにあればリビングでも、壁面テレビ端子６が寝室にあれば寝室でといったように、受信したい部屋で防災行政無線を受信できる大変便利なシステムである。システム例として、既設の家においては、防災行政無線受信用アンテナ３の出力を混合する混合器４（ｇ）を、地上放送受信用アンテナ１の出力ケーブル１０の途中に追加する形態が通常である。また、新しく家を建設するときに本システムを導入するときには、地上放送受信用アンテナ１と衛星放送受信用アンテナ２と防災行政無線受信用アンテナ３を、一つのもので接続できる混合器４を用いる形態で好適に実施可能である。 As shown in FIG. 1, in this system, a mixer 4 (g) for disaster prevention administrative radio is installed in the middle of a coaxial cable 10 which is an output cable of an antenna 1 for receiving terrestrial digital broadcasting, and the mixer thereof is installed. A coaxial cable 30 which is an output cable of the antenna 3 of the disaster prevention administrative radio is connected to 4 (g) and the signal is mixed, and is connected to a mixer 4 (h) which mixes the coaxial cable 20 of the satellite broadcasting antenna 2. And those signals are mixed. Alternatively, the coaxial cable 30 of the antenna 3 for disaster prevention administrative radio is mixed with the mixer 4 (h) that mixes the coaxial cables (output cables) 10 and 20 of the antennas 1 and 2 that receive terrestrial digital broadcasting and satellite broadcasting. An embodiment in which a terminal is provided to mix the disaster prevention administrative radio and the coaxial cable 30 of the antenna 3 of the disaster prevention administrative radio is mixed with the mixer 4 (h) can also be adopted (not shown).
Then, the signal of the disaster prevention administration radio is distributed and supplied to the wall surface TV terminal 6 of each room connected by the coaxial cable 50 through the distributor 5 connected to the mixer 4 (h), and the wall surface of the desired room. The disaster prevention administrative radio can be freely received only by connecting the door-to-door receiver 7 of the disaster prevention administrative radio to the TV terminal 6. In the illustrated example, the television m is connected to one wall television terminal 6 divided into two.
Therefore, it is a very convenient system that can receive the disaster prevention administrative radio in the room to be received, such as in the living room if the wall TV terminal 6 is in the living room, or in the bedroom if the wall TV terminal 6 is in the bedroom. As a system example, in an existing house, a mixer 4 (g) that mixes the outputs of the disaster prevention administrative radio reception antenna 3 is usually added in the middle of the output cable 10 of the terrestrial broadcast reception antenna 1. .. When introducing this system when constructing a new house, a mixer 4 that can connect the terrestrial broadcast receiving antenna 1, the satellite broadcast receiving antenna 2, and the disaster prevention administrative radio receiving antenna 3 with one is used. It can be preferably carried out in the form.

図２～図４は、防災行政無線や地上デジタル放送や衛星放送を受信する本システムに増幅器８を組み込んだ実施形態を示している。図２は屋外での実施形態、図３は防災行政無線や地上デジタル放送や衛星放送の信号をそれぞれ屋内に通し、屋内に増幅器８を組み込んだ実施形態を示している。図４は防災行政無線や地上デジタル放送や衛星放送を屋外で混合し、１本の同軸ケーブルで屋内に通し、屋内に増幅器８を組み込んだ、屋内での実施形態を示している。
図２における屋外に設置するタイプの防災行政無線に対応した増幅器８の中に、防災行政無線用の信号を増幅する帯域を有する防災行政無線用増幅部ａが設置され、防災行政無線アンテナ３の同軸ケーブル（出力ケーブル）３０が、その入力端子８０に接続されている。この増幅器８にはまた、地上デジタル放送用アンテナ１の同軸ケーブル（出力ケーブル）１０が、地上デジタル放送用増幅部ｂの入力端子８１に接続されていると共に、衛星放送用アンテナ２の同軸ケーブル（出力ケーブル）２０が、衛星放送用増幅部ｃの入力端子８２に接続されている。前記防災行政無線用増幅部ａと地上デジタル放送用増幅部ｂが、混合器ｇに接続して混合され、同混合器ｇと前記衛星放送用増幅部ｃが、混合器ｈに接続して混合されている。
前記の防災行政無線用増幅部ａは、屋内に設置されたＡＣ１００Ｖの商用電源で動作している屋内電源部ｎから供給された電源で動作する増幅部用電源部ｆで通常動作される。そして停電時に備えて、前記増幅部用電源部ｆから供給されている電源で充電されている蓄電装置ｅがあり、停電時はその蓄電装置ｅで前記防災行政無線用増幅部ａは動作される。図中、符号ｄは、前記増幅部用電源部ｆと蓄電装置ｅの電源の切換を行う電源切換器を示している。また、前記増幅部用電源部ｆと前記混合器ｈとが電源分離器ｉに接続され、同電源分離器ｉが電流通過型分配器５に接続可能な出力端子８３に接続されている。
前記構成の増幅器８の出力端子８３に接続された電流通過型分配器５から延びる各同軸ケーブル５０が接続された各部屋の壁面テレビ端子６に、増幅された前記防災行政無線の信号が常時分配伝送されている。通常、屋外で使用される増幅器８はＤＣ１５Ｖで動作しており、そのＤＣ１５Ｖはテレビｍの近くの商用電源コンセントに接続される屋内電源部ｎから壁面テレビ端子６を通して供給される。
したがって、所望の部屋の壁面テレビ端子６に防災行政無線の戸別受信機７を接続することにより、増幅された防災行政無線を常時受信することができる。停電時でも、前記蓄電装置ｅが動作して、いつでも所望の部屋で防災行政無線を受信できる。 2 to 4 show an embodiment in which the amplifier 8 is incorporated in this system for receiving disaster prevention administrative radio, terrestrial digital broadcasting, and satellite broadcasting. FIG. 2 shows an embodiment outdoors, and FIG. 3 shows an embodiment in which signals of disaster prevention administrative radio, terrestrial digital broadcasting, and satellite broadcasting are passed indoors, and an amplifier 8 is incorporated indoors. FIG. 4 shows an indoor embodiment in which disaster prevention administrative radio, terrestrial digital broadcasting, and satellite broadcasting are mixed outdoors, passed indoors with a single coaxial cable, and an amplifier 8 is incorporated indoors.
In the amplifier 8 corresponding to the disaster prevention administrative radio of the type installed outdoors in FIG. 2, the disaster prevention administrative radio amplification unit a having a band for amplifying the signal for the disaster prevention administrative radio is installed, and the disaster prevention administrative radio antenna 3 is installed. A coaxial cable (output cable) 30 is connected to the input terminal 80. In addition, the coaxial cable (output cable) 10 of the terrestrial digital broadcasting antenna 1 is connected to the input terminal 81 of the terrestrial digital broadcasting amplification unit b, and the coaxial cable (output cable) of the satellite broadcasting antenna 2 is connected to the amplifier 8. The output cable) 20 is connected to the input terminal 82 of the satellite broadcasting amplification unit c. The disaster prevention administrative radio amplification unit a and the terrestrial digital broadcasting amplification unit b are connected to the mixer g and mixed, and the mixer g and the satellite broadcasting amplification unit c are connected to the mixer h and mixed. Has been done.
The disaster prevention administrative radio amplification unit a is normally operated by the amplification unit power supply unit f operated by the power supply supplied from the indoor power supply unit n operating on the commercial power supply of AC100V installed indoors. Then, in preparation for a power failure, there is a power storage device e that is charged by the power supply supplied from the power supply unit f for the amplification unit, and in the event of a power failure, the power storage device e operates the amplification unit a for disaster prevention administration radio. .. In the figure, reference numeral d indicates a power supply switch for switching the power supply between the power supply unit f for the amplification unit and the power storage device e. Further, the power supply unit f for the amplification unit and the mixer h are connected to the power supply separator i, and the power supply separator i is connected to the output terminal 83 connectable to the current passing type distributor 5.
The amplified signal of the disaster prevention administrative radio is constantly distributed to the wall TV terminal 6 of each room to which each coaxial cable 50 extending from the current-passing distributor 5 connected to the output terminal 83 of the amplifier 8 having the above configuration is connected. It is being transmitted. Normally, the amplifier 8 used outdoors operates at DC15V, and the DC15V is supplied from the indoor power supply unit n connected to the commercial power outlet near the TV m through the wall TV terminal 6.
Therefore, by connecting the door-to-door receiver 7 of the disaster prevention administrative radio to the wall TV terminal 6 of the desired room, the amplified disaster prevention administrative radio can be constantly received. Even in the event of a power outage, the power storage device e operates and can receive the disaster prevention administrative radio in a desired room at any time.

図３における屋内に設置するタイプの防災行政無線に対応した増幅器８の実施形態も、基本的構成は前記図２の屋外タイプと同様なので説明を省略する。異なる点は、増幅器用電源部ｆが電源分離器ｉに接続されておらず、かつ前記のような屋内電源部ｎからの電源供給を受けずに、直接屋内の商用電源ＡＣ１００Ｖに接続されて通常電源供給されている点である。
屋内増幅器８を使用する場合は、地上デジタル放送用アンテナ１、衛星放送用アンテナ２、防災行政無線用アンテナ３の各々の同軸ケーブル１０、２０、３０を屋内に引き込んで増幅器８の各々の入力端子８０、８１、８２に接続する方法もあるが、図４に示したように、前述の屋外に設置される地上デジタル放送用アンテナ１、衛星放送用アンテナ２、防災行政無線用アンテナ３の各々の同軸ケーブル１０、２０、３０を混合する混合器４を設置して、一本の同軸ケーブルを屋内に引き込んで増幅器８に接続する方法もある。この場合、屋内増幅器８には混合入力端子８４が設けられ内部回路には、各々を分波して各専用の増幅部ａ、ｂ、ｃに伝達する分波部ｊが設けられている。 The embodiment of the amplifier 8 corresponding to the disaster prevention administrative radio of the type installed indoors in FIG. 3 also has the same basic configuration as the outdoor type of FIG. 2, and thus the description thereof will be omitted. The difference is that the power supply unit f for the amplifier is not connected to the power supply separator i, and is normally directly connected to the indoor commercial power supply AC100V without receiving the power supply from the indoor power supply unit n as described above. It is a point where power is supplied.
When using the indoor amplifier 8, pull the coaxial cables 10, 20, and 30 of the terrestrial digital broadcasting antenna 1, the satellite broadcasting antenna 2, and the disaster prevention administrative radio antenna 3 indoors to each input terminal of the amplifier 8. There is also a method of connecting to 80, 81, 82, but as shown in FIG. 4, each of the above-mentioned outdoor terrestrial digital broadcasting antenna 1, satellite broadcasting antenna 2, and disaster prevention administrative radio antenna 3 is installed outdoors. There is also a method of installing a mixer 4 that mixes the coaxial cables 10, 20, and 30, and pulling one coaxial cable indoors to connect to the amplifier 8. In this case, the indoor amplifier 8 is provided with a mixing input terminal 84, and the internal circuit is provided with a demultiplexing unit j that demultiplexes each of them and transmits them to the dedicated amplification units a, b, and c.

上述した本システムに増幅器８を組み込んだ実施形態を、より詳細に説明する。
テレビホーム受信システムの伝送周波数帯域は、現在１０～３２２４ＭＨzになっている。３０年ぐらい前に設置されたテレビホーム受信システムでは１０～１８５０ＭＨzである。これらのテレビホーム受信システムに使用されている機器のうち増幅器を除いて防災行政無線の信号を伝送することが可能である。増幅器は、分配端子数が多い場合や、テレビ放送の電波が弱い場合に必要になってくる。アンテナでテレビ放送を受信するテレビホーム受信用の増幅器では防災行政無線の５４～６８ＭＨz帯は増幅していない。そのため、本案に使用する増幅器８には防災行政無線用アンテナ３を接続する端子と５４～６８ＭＨz の防災行政無線用増幅部ａを設け、この部分は通常は地上デジタル放送用増幅部ｂ、衛星放送用増幅部ｃと同じ増幅部用電源部ｆから給電を受けており、停電になったとき蓄電装置ｅに切り替わる機能を有している。しかも、蓄電装置ｅは、上述したとおり常に増幅部用電源部ｆから充電状態になっている。そのため停電時でも、この防災行政無線の帯域は信号を増幅できる状態になっており、緊急放送などがあった場合、テレビホーム受信システムのラインを通り、壁面テレビ端子６に接続された防災行政無線の戸別受信機７は信号を受信できる。この増幅器８を複数縦続して使用すれば、大型のマンションでも各住戸の壁面テレビ端子６に戸別受信機７を接続すれば防災行政無線を受信することが可能となる。また、この増幅器は５４～６８ＭＨz帯の防災行政無線用増幅部ａのみを停電時に蓄電装置ｅで動作するようにしたため消費電力は小さく、長時間にわたって動作させることが可能である。また、本システムでは防災行政無線の電波を屋外の比較的高い場所に防災行政無線用アンテナ３を設置して受信可能となり（図６参照）、アンテナ出力の近くにＮＦ（雑音指数）の良い低雑音増幅器があるため受信信号品質を劣化させることなく戸別受信機７まで伝送できる特徴も有している。そのためフェージングなどによる受信電波に変動があっても戸別受信機７に余裕のある信号品質を届けることができる。従来のように屋外に戸別受信機用アンテナを設置して直接戸別受信機に接続する場合、フェージング等で電波が弱くなった際に信号品質を低下させてしまう不都合が解消される。 The embodiment in which the amplifier 8 is incorporated in the above-mentioned system will be described in more detail.
The transmission frequency band of the television home reception system is currently 10 to 3224 MHz. The TV home reception system installed about 30 years ago has a speed of 10 to 1850 MHz. It is possible to transmit the signal of the disaster prevention administrative radio except for the amplifier among the devices used in these TV home reception systems. An amplifier is required when the number of distribution terminals is large or when the radio wave of television broadcasting is weak. The amplifier for receiving TV homes that receives TV broadcasts with an antenna does not amplify the 54-68 MHz band of the disaster prevention administrative radio. Therefore, the amplifier 8 used in this proposal is provided with a terminal for connecting the disaster prevention administrative radio antenna 3 and a disaster prevention administrative radio amplification unit a of 54 to 68 MHz, and this part is usually an terrestrial digital broadcasting amplification unit b and satellite broadcasting. It receives power from the same amplification unit power supply unit f as the amplification unit c, and has a function of switching to the power storage device e in the event of a power failure. Moreover, as described above, the power storage device e is always in a charged state from the power supply unit f for the amplification unit. Therefore, even in the event of a power outage, the band of this disaster prevention administrative radio is in a state where signals can be amplified, and when there is an emergency broadcast, etc., the disaster prevention administrative radio connected to the wall TV terminal 6 through the line of the TV home reception system. The door-to-door receiver 7 can receive a signal. If a plurality of the amplifiers 8 are used in succession, it is possible to receive the disaster prevention administrative radio even in a large condominium by connecting the door-to-door receiver 7 to the wall TV terminal 6 of each dwelling unit. Further, since this amplifier operates only the amplification unit a for disaster prevention administrative radio in the 54 to 68 MHz band by the power storage device e at the time of a power failure, the power consumption is small and it can be operated for a long time. In addition, in this system, the radio wave of the disaster prevention administrative radio can be received by installing the antenna 3 for the disaster prevention administrative radio in a relatively high place outdoors (see Fig. 6), and the NF (noise figure) is good and low near the antenna output. Since there is a noise amplifier, it also has a feature that it can be transmitted to the receiver 7 for each door without deteriorating the quality of the received signal. Therefore, even if the received radio wave fluctuates due to fading or the like, it is possible to deliver a generous signal quality to the door-to-door receiver 7. When an antenna for a door-to-door receiver is installed outdoors and directly connected to the door-to-door receiver as in the conventional case, the inconvenience of degrading the signal quality when the radio wave is weakened due to fading or the like is solved.

図５は、この防災行政無線のテレビホーム受信システムの増幅器８を、情報分電盤９に設置した実施形態を示している。
すなわち、上述した構成の増幅器８が情報分電盤９の中に設置されている。図示例では、増幅器８の防災行政無線用アンテナ３が接続自在な入力端子８０に予め接続された入力ケーブルである同軸ケーブル３０が、当該情報分電盤９の窓部９０に挿通され、他側が外壁面ｔの屋外側に配設されている（図６参照）。或いは、情報分電盤９から図示を省略したＣＤ管を外壁面ｔの屋外に配設しておけば、必要時に同軸ケーブル３０をそのＣＤ管に挿通し入力端子８０に接続できる。いずれのケースでも、図６に示したような同軸ケーブル３０の他側に、防災行政無線用アンテナ３を難なく接続可能である。なお、同図５中、符号９１はＨＵＢ、９２は電話端子板、９３はコンセント、９４は蓋体をそれぞれ示している。 FIG. 5 shows an embodiment in which the amplifier 8 of the television home reception system of the disaster prevention administrative radio is installed on the information distribution board 9.
That is, the amplifier 8 having the above-described configuration is installed in the information distribution board 9. In the illustrated example, the coaxial cable 30, which is an input cable to which the disaster prevention administrative radio antenna 3 of the amplifier 8 is connected in advance to the connectable input terminal 80, is inserted into the window 90 of the information distribution board 9, and the other side is It is arranged on the outdoor side of the outer wall surface t (see FIG. 6). Alternatively, if a CD tube (not shown) is arranged outside the outer wall surface t from the information distribution board 9, the coaxial cable 30 can be inserted into the CD tube and connected to the input terminal 80 when necessary. In either case, the disaster prevention administrative radio antenna 3 can be easily connected to the other side of the coaxial cable 30 as shown in FIG. In FIG. 5, reference numeral 91 indicates a HUB, 92 indicates a telephone terminal board, 93 indicates an outlet, and 94 indicates a lid.

本実施形態を具体的に説明すると、ハウスメーカーが設計、施工する家においては、テレビ受信とインターネットなど通信系のＬＡＮなどの配線を一ケ所にまとめて設置工事を行う情報分電盤が普及している。設置後さらに高度なＬＡＮシステムが認可されたり、伝送スピードが速くなったり、また電波行政が変わり受信する周波数が変更になりテレビホーム受信の伝送帯域が変更になることがある。このような時に情報分電盤が設置されていれば、その中にあるＨＵＢや増幅器を変更することにより素早く最新の設備に変更することができる。機器がどこに設置されているかを探す必要がなくスムーズな工事を行うことができる。そのため、本システムは、図５に示したような情報分電盤９の中にあるテレビ信号用増幅器を、防災行政無線対応型の増幅器８とし最初から設置するものである。つまり、上述したように、この防災行政無線用増幅部ａの入力端子８０に接続した同軸ケーブル３０を屋外まで先行配線しておくか、同軸ケーブル３０を後から通すことができるＣＤ管を屋外と情報分電盤９との間に予め配管しておくことにより、防災行政無線がデジタル化されるときに配布される戸別受信機７の設置が容易になる。よって、戸別受信機７の設置時に防災行政無線用アンテナ３を設置し、配線した同軸ケーブル３０に防災行政無線用アンテナ３を接続すれば、壁面テレビ端子６が設置されているどの部屋でも戸別受信機７を当該壁面テレビ端子６に接続するだけで防災行政無線を受信できる訳である。 To explain this embodiment in detail, in a house designed and constructed by a house maker, an information distribution board for installing TV reception and wiring such as a communication system LAN such as the Internet in one place has become widespread. ing. After installation, a more advanced LAN system may be approved, the transmission speed may increase, the radio wave administration may change, the reception frequency may change, and the transmission band of TV home reception may change. If an information distribution board is installed at such times, it can be quickly changed to the latest equipment by changing the HUB and amplifier in it. There is no need to find out where the equipment is installed, and smooth construction can be performed. Therefore, in this system, the TV signal amplifier in the information distribution board 9 as shown in FIG. 5 is installed as the disaster prevention administrative radio compatible amplifier 8 from the beginning. That is, as described above, the coaxial cable 30 connected to the input terminal 80 of the disaster prevention administrative radio amplification unit a is pre-wired to the outdoors, or the CD tube through which the coaxial cable 30 can be passed is connected to the outdoors. By pre-wiring with the information distribution board 9, it becomes easy to install the door-to-door receiver 7 distributed when the disaster prevention administrative radio is digitized. Therefore, if the disaster prevention administrative radio antenna 3 is installed when the door-to-door receiver 7 is installed and the disaster prevention administrative radio antenna 3 is connected to the wired coaxial cable 30, the door-to-door reception can be performed in any room where the wall-mounted TV terminal 6 is installed. The disaster prevention administrative radio can be received only by connecting the machine 7 to the wall-mounted TV terminal 6.

そして、屋外に設置される上述した防災行政無線を受信する防災行政無線用アンテナ３は、コンパクト化して、筒状体の中にコイル状に形成したアンテナ素子を装填した小型タイプのものが好適である（図６参照）。
つまり、家を新築するときテレビｍを各部屋で受信可能とするため分配器５や壁面テレビ端子６を接続する同軸ケーブルを建設途中の壁の中に配線する。同じようにインターネットに接続するためのＬＡＮケーブルや電話線も配線される。壁の工事が完成するころには情報分電盤９が設置され、増幅器８、分配器５、壁面テレビ端子６が接続されたテレビ共同受信システムとなり、ＬＡＮ端子とＨＵＢのほか電話端子などが接続された情報システムが完成する。このとき、本システムによれば、増幅器８の設置と同時に防災行政無線の配線システムは完成しているので、防災行政無線受信用アンテナ３を設置して増幅器８に接続すればよい。しかし一般的な防災行政無線用のアンテナは全長が約２～２．５ｍ程度と長くて設置場所に困る。そこで案出した本実施形態の防災無線受信用アンテナ３は、筒状体のケースの中にコイル状のアンテナ素子が装填され、全長が約６００～１２５０ｍｍ程度と短いアンテナとなっており、地上放送用アンテナ１と衛星放送用アンテナ２と、当該防災行政無線用アンテナ３が同一のポールｐに取り付けることが可能になっている。最近の家は、図６に示したように、屋根上に太陽光パネルｓがあり、アンテナを設置できる場所は、切妻の破風など大変限られており、小型で受風面積が小さい近年のアンテナ事情の需要に適応している。 The antenna 3 for disaster prevention administrative radio that receives the above-mentioned disaster prevention administrative radio installed outdoors is preferably a compact type that is compact and has an antenna element formed in a coil shape in a cylindrical body. Yes (see Figure 6).
That is, when a new house is built, a coaxial cable for connecting the distributor 5 and the wall TV terminal 6 is wired in the wall under construction so that the TV m can be received in each room. Similarly, LAN cables and telephone lines for connecting to the Internet are also wired. By the time the wall construction is completed, the information distribution board 9 will be installed, and the TV joint reception system will be connected to the amplifier 8, distributor 5, and wall TV terminal 6, and the LAN terminal, HUB, and telephone terminal will be connected. The completed information system is completed. At this time, according to this system, since the wiring system for the disaster prevention administrative radio is completed at the same time as the installation of the amplifier 8, the disaster prevention administrative radio receiving antenna 3 may be installed and connected to the amplifier 8. However, the general disaster prevention administrative radio antenna has a long total length of about 2 to 2.5 m, which makes it difficult to install it. The disaster prevention radio reception antenna 3 of the present embodiment devised therefor is a short antenna with a coiled antenna element loaded in a tubular case and a total length of about 600 to 1250 mm, and is used for terrestrial broadcasting. The antenna 1 for satellite broadcasting, the antenna 2 for satellite broadcasting, and the antenna 3 for disaster prevention administrative radio can be attached to the same pole p. As shown in Fig. 6, recent houses have solar panels s on the roof, and the places where antennas can be installed are very limited, such as gable gables, and recent antennas that are small and have a small receiving area. Adapts to the demands of the situation.

以上、実施例を図面に基づいて説明したが、本発明は、図示例の限りではなく、その技術的思想を逸脱しない範囲において、当業者が通常に行う設計変更、応用のバリエーションの範囲を含むことを念のために言及する。 Although the examples have been described above based on the drawings, the present invention is not limited to the illustrated examples, and includes a range of design changes and application variations normally performed by those skilled in the art within a range not deviating from the technical idea. I will mention it just in case.

１地上デジタル放送用アンテナ
１０同軸ケーブル
２衛星放送用アンテナ
２０同軸ケーブル
３防災行政無線用アンテナ
３０同軸ケーブル
４混合器
５分配器
６壁面テレビ端子
７戸別受信機
８増幅器
８０入力端子
８３出力端子
９情報分電盤
ａ防災行政無線用増幅部
ｆ増幅部用電源部
ｅ蓄電装置
ｎ屋内電源部
ｔ外壁面 1 Terrestrial digital broadcasting antenna 10 Coaxial cable 2 Satellite broadcasting antenna 20 Coaxial cable 3 Disaster prevention administrative radio antenna 30 Coaxial cable 4 Mixer 5 Distributor 6 Wall TV terminal 7 Door-to-door receiver 8 Amplifier 80 Input terminal 83 Output terminal 9 Information Distribution board a Disaster prevention administrative radio amplification unit f Amplification unit power supply unit e Power storage device n Indoor power supply unit t Outer wall surface

特開２００７－４３６４１公報JP-A-2007-43641

請求項３に記載した発明は、前記増幅器８が情報分電盤９の中に設置され、前記増幅器８の防災行政無線用のアンテナ３が接続自在な入力端子８０に、予め接続された同軸ケーブル３０の他側が外壁面ｔの屋外側に配設され、若しくは情報分電盤9からＣＤ管が外壁面ｔの屋外に配設され、必要に応じて同軸ケーブル３０を前記ＣＤ管に挿通し前記入力端子８０に接続されることにより、いずれかの前記同軸ケーブル３０の他側に防災行政無線用のアンテナ３が接続可能に構成されていることを特徴とする、請求項２に記載した防災行政無線のテレビホーム受信システムである。 According to the third aspect of the present invention, the coaxial cable in which the amplifier 8 is installed in the information distribution board 9 and the antenna 3 for disaster prevention administrative radio of the amplifier 8 is connected in advance to the input terminal 80 to which the antenna 3 can be connected. The other side of the 30 is arranged on the outdoor side of the outer wall surface t, or the CD tube is arranged outside the outer wall surface t from the information distribution board 9, and the coaxial cable 30 is inserted into the CD tube as needed. The disaster prevention administration according to claim 2, wherein the antenna 3 for disaster prevention administration radio is configured to be connectable to the other side of any of the coaxial cables 30 by being connected to the input terminal 80. It is a wireless TV home reception system.

請求項４に記載した発明は、屋外に設置される前記防災行政無線を受信するアンテナ３は、筒状体の中にコイル状に形成したアンテナ素子を装填して小型化されていることを特徴とする、請求項１～３のいずれか１項に記載した防災行政無線のテレビホーム受信システムである。

The invention according to claim 4 is characterized in that the antenna 3 for receiving the disaster prevention administrative radio installed outdoors is miniaturized by loading an antenna element formed in a coil shape into a tubular body. This is the TV home receiving system of the disaster prevention administrative radio according to any one of claims 1 to 3.

Claims

In a TV home reception system that receives terrestrial digital broadcasting and satellite broadcasting
The mixer that connects the coaxial cable of the antenna that receives the terrestrial digital broadcast or satellite broadcast is provided with a terminal that mixes the coaxial cable of the antenna that receives the disaster prevention administrative radio, and the signal of the disaster prevention administrative radio is mixed or terrestrial. A mixer for disaster prevention administrative radio is installed in the middle of the coaxial cable of the antenna that receives digital broadcasting, and the coaxial cable of the antenna that receives disaster prevention administrative radio is connected to the mixer and the signals are mixed.
The signal of the disaster prevention administrative radio is distributed and supplied to the wall TV terminal of each room through the distributor, and the disaster prevention administrative radio can be freely received by connecting the door-to-door receiver of the disaster prevention administrative radio to the wall TV terminal of the desired room. A TV home reception system for disaster prevention administrative radio, which is characterized by being configured.

In a TV home reception system that receives terrestrial digital broadcasting and satellite broadcasting
The coaxial cable of the antenna that receives the terrestrial digital broadcasting, satellite broadcasting, and disaster prevention administrative radio is connected via a mixer, or the amplifier to which each coaxial cable is directly connected is included in the amplifier for disaster prevention administrative radio. There is an amplification unit for disaster prevention administrative radio that has a band for amplifying signals, and the amplification unit for disaster prevention administrative radio is normally operated by the power supply unit for the amplification unit that operates with a commercial power supply, and in the event of a power failure, the power supply unit for the amplification unit The disaster prevention administrative radio amplification unit is operated by the power storage device charged by the supplied power supply.
The amplified disaster prevention administrative radio signal is constantly distributed and transmitted to the wall TV terminal of each room through the distributor, and the disaster prevention administrative radio is connected to the wall TV terminal of the desired room by connecting the door-to-door receiver of the disaster prevention administrative radio. Is a TV home reception system for disaster prevention administrative radio, which is characterized by being configured to be receivable at any time.

The amplifier is installed in an information distribution board, and the antenna for disaster prevention administrative radio of the amplifier is connected to an input terminal to which the antenna can be connected, and the other side of the coaxial cable connected in advance is arranged on the outdoor side of the outer wall surface. A CD tube is arranged outside the outer wall surface from the information distribution board, and if necessary, a coaxial cable is inserted into the CD tube and connected to the input terminal, so that the coaxial cable can be connected to the other side of the coaxial cable. The television home reception system of the disaster prevention administrative radio according to claim 2, wherein the antenna for the disaster prevention administrative radio is configured to be connectable.

Any of claims 1 to 3, wherein the antenna for receiving the disaster prevention administrative radio installed outdoors is miniaturized by loading an antenna element formed in a coil shape in a tubular body. The TV home reception system of the disaster prevention administrative radio described in Section 1.