JP3619081B2

JP3619081B2 - Wireless direction finding device

Info

Publication number: JP3619081B2
Application number: JP29318799A
Authority: JP
Inventors: 浩戸叶; 健次青木; 恒夫竹内
Original assignee: 株式会社光電製作所
Priority date: 1999-10-15
Filing date: 1999-10-15
Publication date: 2005-02-09
Anticipated expiration: 2019-10-15
Also published as: JP2001116818A

Description

【０００１】
【発明の属する技術分野】
この発明は、中心位置から水平面内に放射状に張り出した複数の支持腕体の先端部位から垂直方向に上下に張り出したアンテナ素子により所定の電波を受波して得られる受信信号にもとづいて上記の電波の到来方向を探知する構成をもつ無線方向探知装置に関するものである。
【０００２】
【従来の技術】
この種の無線方向探知装置におけるアンテナ装置としては、比較的低い周波数帯の電波を探知するために用いられる図９〜図１１のような〔直竿状アンテナ型〕のアンテナ装置１００の構成（以下、第１従来技術という）と、同様に比較的低い周波数帯の電波を探知するために用いられる図１２〜図１４のような〔大篭アンテナ型〕のアンテナ装置１００の構成（以下、第２従来技術という）と、比較的高い周波数帯の電波を探知するために用いられる図１５〜図１７のような〔小篭アンテナ型〕のアンテナ装置１００の構成（以下、第３従来技術という）とが周知である。なお、以下の図９〜図１９において同一の符号で示す部分は同一の機能をもつ部分である。また、この発明において、部材とは、所定の部分を構成する構成材を言うものである。
【０００３】
ここで、〔大篭アンテナ型〕〔小篭アンテナ型〕のようにアンテナ素子１０１Ａ〜１０１Ｅを篭状体に形成するのは、アンテナの実効高さと広帯域性とを向上させるためであり、また、〔直竿状アンテナ型〕を用いる周波数帯の場合でも、篭状体にした方がよいが、篭状体にすると、それを支持する支持腕体１０２Ａ〜１０２Ｅの部分の機械的強度を維持させるのが困難になるためである。
【０００４】
これらのアンテナ装置１００において、複数のアンテナ素子１０１Ａ〜１０１Ｅは、中心位置１１０から水平面内に放射状に張り出した複数の支持腕体１０２Ａ〜１０２Ｅの各先端部位１０２Ａ１〜１０２Ｅ１から垂直方向に上下に張り出して配置した構成になっており、各アンテナ素子１０１Ａ〜１０１Ｅで所定の電波（図示せず）を受波して得られる受信信号にもとづいて電波の到来方向Ｄ１を探知している。この探知は、例えば、基準方向Ｄ０、例えば、真北方向に対する角度値θを測定することにより行っている。
【０００５】
なお、アンテナ装置１００の中心位置１１０の上面側Ｘ１、すなわち、中心基部支持体１２０の上面側Ｘ１は、各図では解放状に画いてあるが、アンテナ装置１００を単独で使用する場合には、適宜の防水覆蓋（図示せず）で閉じるように構成するとともに、必要に応じて、中心基部支持体１２０の下方に設けた柱状体１３０の下方に、さらに、適宜の柱状体（図示せず）を継ぎ足して構成する。
【０００６】
また、複数の異なる周波数帯の電波を受波するためのに複数の異なるアンテナ装置１００を垂直方向に並べて、例えば、図１８・図１９のような〔多段アンテナ型〕のアンテナ装置１００Ｘとして構成する場合には、上面側Ｘ１に上方側に位置するアンテナ装置１００の柱状体１３０を底面側Ｘ２を継ぎ足して構成する。なお、必要に応じて、図１９のように、アンテナ装置１００の高さを所要の高さにするための補助的な柱状体１３０Ｘを継ぎ足して構成する場合もある。
【０００７】
なお、各アンテナ素子１０１Ａ〜１０１Ｅと各支持腕体１０２Ａ〜１０２Ｅの配置数は、各図のような奇数の複数、例えば、５本を配置する場合と、偶数の複数、例えば、６本を配置する場合とがある。
【０００８】
そして、無線方向探知装置５００の構成は、受信部分２１０で選択指定した周波数の電波をアンテナ装置１００の各アンテナ素子１０１Ａ〜１０１Ｅで受波して得られる受信信号１００ａにもとづいて、その電波の到来方向Ｄ１を探知するものであって、例えば、受信信号１００ａを受信部分２１０で増幅して得た増幅信号２１０ａを方向検出部分２２０で所要の検出処理することにより電波の到来方向Ｄ１を表す方向信号２２０ａを得るとともに、この方向信号２２０ａを方向表示部分２３０に与えて、アナログ値による方向表示画面上、または、ディジタル値による表示画面上に電波の到来方向Ｄ１を表示するように構成している。
【０００９】
こうした無線方向探知装置５００の方向探知方式としては、いわゆるベリニ・トシ式の方向探知方式による構成（以下、第４従来技術という）、ドップラー式の方向探知方式による構成（以下、第５従来技術という）、インターフェロメータ式の方向探知方式の構成（以下、第６従来技術という）と、インターフェロメータ式を改良したＭＵＳＩＣ方式の方向探知方式（以下、第７従来技術という）などがある。
【００１０】
ベリニ・トシ式の方向探知方式は、各アンテナ素子１０１Ａ〜１０１Ｅをアドコック型アンテナとして形成するとともに、各アンテナ素子１０１Ａ〜１０１Ｅの出力を中心基部支持体１２０の中の空洞部分に設けたゴニオメータ（図示せず）に導き、ゴニオメータを機械的または電子的な回転によって得られる受信信号１００ａを受信部分に与え、その回転によって生ずる最小感度方向が変化を電波の到来方向として検出するように構成したものであり、一般的には、各アンテナ素子１０１Ａ〜１０１Ｅの配置数を偶数の複数にしている。
【００１１】
ドップラー方式の方向探知方式は、各アンテナ素子１０１Ａ〜１０１Ｅをダイポール・アンテナとして形成しておき、各アンテナ素子１０１Ａ〜１０１Ｅの各出力を中心基部支持体１２０の中の空洞部分に設けた電子的な切換走査部分（図示せず）に導き、その切換走査を所定の循環方向、例えば、時計回り方向に、順次に切り換えながら受波して得られる受信信号１００ａの切換時点における位相変化の最大方向を電波の到来方向として検出するように構成したものであり、各アンテナ素子１０１Ａ〜１０１Ｅの配置数は、偶数の複数の場合と奇数の複数の場合とがある。
【００１２】
インターフェロメータ式の方向探知方式は、各アンテナ素子１０１Ａ〜１０１Ｅをダイポール・アンテナとして形成しておき、各アンテナ素子１０１Ａ〜１０１Ｅに対応するように各受信部分２１０を設けて、電波が各アンテナ素子１０１Ａ〜１０１Ｅに到来した際の電波の周波数の位相に対応する位相を正確に保った各増幅信号２１０ａの位相の差異にもとづいて電波の到来方向を検出するように構成したものであり、また、ＭＵＳＩＣ方式の方向探知方式は、インターフェロメータ式の方向探知方式と同様の各増幅信号２１０ａにおける位相・振幅の差異にもとづいて電波の到来方向を検出することにより同一周波数で異なる方向から到来する電波に対しても各到来方向を検出し得るように改良した構成のものであり、これらの構成における各アンテナ素子１０１Ａ〜１０１Ｅの配置数は、偶数の複数の場合と奇数の複数の場合とがある。
【００１３】
そして、図９〜図１１の〔直竿状アンテナ型〕のアンテナ装置１００、すなわち、上記の第１従来技術の構成は、具体的には、中心位置１１０から水平面内に放射状に張り出した複数の支持腕体１０２Ａ〜１０２Ｅは、例えば、金属材の管体であって、中心位置１１０側に取付座部分１０２Ａ２〜１０２Ｅ２、例えば、金属材の鋳物体をパッキングを介在させてねじ止め固定してあり、この取付座部分１０２Ａ２〜１０２Ｅ２によって、中心基部支持体１２０、例えば、金属材の鋳物体にねじ止め固定するとともに、各支持腕体１０２Ａ〜１０２Ｅの先端部位１０２Ａ１〜１０２Ｅ１から上下に張り出した各アンテナ素子１０１Ａ〜１０１Ｅを絶縁物の保持部分１０３Ａ〜１０３Ｅ、例えば、強化繊維入り合成樹脂材のモールド体に保持させている。なお、支持腕体１０２Ａ〜１０２Ｅと保持部分１０３Ａ〜１０３Ｅとの間の固定は、保持部分１０３Ａ〜１０３Ｅと一体にモールドされた筒状部分１０３Ａ１〜１０３Ｅ１に支持腕体１０２Ａ〜１０２Ｅを入れ込み、パッキングを介在させて、要所をねじ止めして固定している。
【００１４】
また、各アンテナ素子１０１Ａ〜１０１Ｅは、直線状の竿状体、すなわち、直竿状体で形成したアンテナ素子であって、例えば、両端部分を閉塞した金属材の管体であって先端に行くに従って外径が細くなるような形状にしてあり、その基底部に設けた接続部分１０１Ａ１〜１０１Ｅ１、例えば、金属材のねじ部分（図示せず）とナット部分とによって、保持部分１０３Ａ〜１０３Ｅに取付固定している。保持部分１０３Ａ〜１０３Ｅの中は空洞になっていて、アンテナ素子１０１Ａ〜１０１Ｅの出力を取り出すための端子部分（図示せず）が設けてあり、この端子部分からアンテナ素子１０１Ａ〜１０１Ｅの出力を支持腕体１０２Ａ〜１０２Ｅの内部に配置したケーブル（図示せず）を介して中心基部支持体１２０に導き、必要に応じて、上記のゴニオメータまたは切換走査部分を介した後に、柱状体１３０または１３０・１３０Ｘの内部に配置した適宜の配線ケーブル（図示せず）と、柱状体１３０または１３０Ｘの基部付近に設けた配線箱１３１とを介して、受信ケーブル２１１に受信信号１００ａとして導いてある。
【００１５】
支持腕体１０２Ａ〜１０２Ｅには、その水平方向の動きを抑止するために、各支持腕体１０２Ａ〜１０２Ｅの途中部位１０２Ａ３〜１０２Ｅ３、ちなわち、途中部分の位置の箇所に、固定用保持体１０４Ａ〜１０４Ｅ、例えば、金属板の折曲形成体を固定して設けるとともに、各固定用保持体１０４Ａ〜１０４Ｅの間、すなわち、各途中部位１０２Ａ３〜１０２Ｅ３の間を水平な第１の竿状体１０５Ａ〜１０５Ｅ、例えば、金属材の矩形断面をした帯状体を、いわゆる横方向ステイにして固定してある。
【００１６】
さらに、支持腕体１０２Ａ〜１０２Ｅの垂直方向の動きを抑止するために、各支持腕体１０２Ａ〜１０２Ｅの途中部位、例えば、各固定用保持体１０４Ａ〜１０４Ｅと中心位置１１０に配置した柱状体１３０、例えば、金属材の管体の所定の部位に固定して設けた固定用保持体１０７Ａ〜１０７Ｅとの間を斜めの第２の竿状体１０６Ａ〜１０６Ｅ、例えば、金属材の矩形断面をした帯状体を、いわゆる縦方向ステイにして固定してある。つまり、アンテナ素子１０１Ａに関連する部分を斜視すると図１１のような構成になっている。
【００１７】
また、図１２〜図１４の〔大篭アンテナ型〕のアンテナ装置１００、すなわち、上記の第２従来技術の構成は、具体的には、上記の図９〜図１１の〔直竿状アンテナ型〕のアンテナ装置１００、すなわち、上記の第１従来技術の構成に比べて、次の箇所が異なっている。
【００１８】
第１には、アンテナ素子１０１Ａ〜１０１Ｅの箇所を、大きい篭状体、例えば、金属材の丸棒または管を垂直面内において「くの字」形に形成した篭枠１０１ａの複数個、例えば、６個を、水平面において放射状に配置して、その「くの字形」の先端側を金属材の円環状体１０１ｃに連続させ、また、その「くの字形」の基部側を金属材の短い円筒体１０１ｄに連続させるとともに、「くの字形」の折り角部分１０１ｂの全てを同様の丸棒または管で連続させて形成した篭部分１０１ｘを設けることにより、大きい篭状体のアンテナ素子にして形成した箇所である。
【００１９】
第２には、接続部分１０１Ａ１〜１０１Ｅ１を、基部側の円筒体１０１ｄと止めねじ１０１ｅとによって形成するとともに、止めねじ１０１ｅを円筒体１０１ｄの中心穴（図示せず）に通して止めねじ１０１ｅの保持部分１０３Ａ〜１０３Ｅ側に設けたねじ部分によって保持部分１０３Ａ〜１０３Ｅに固定するように構成した箇所である。そして、アンテナ素子１０１Ａに関連する部分を斜視すると図１４のような構成になっている。
【００２０】
さらに、図１５〜図１７の〔小篭アンテナ型〕のアンテナ装置１００、すなわち、上記の第３従来技術の構成は、具体的には、上記の図１２〜図１４の〔大篭アンテナ型〕のアンテナ装置１００、すなわち、上記の第２従来技術の構成に比べて、次の箇所が異なっている。
【００２１】
第１には、アンテナ素子１０１Ａ〜１０１Ｅの箇所を、小さい篭状体、例えば、金属材の丸棒または管を垂直面内において「くの字」形に形成した篭枠１０１ａの複数個、例えば、６個を、水平面において放射状に配置して、その「くの字形」の先端側を金属材の長い筒状体１０１ｆの先端側に設けたボス部分１０１ｇに連続させ、また、その「くの字形」の基部側を筒状体１０１ｆの基部側に設けたボス部分１０１ｈに連続させて形成した篭部分１０１ｙを設けることにより、小さい篭状体のアンテナ素子にして形成した箇所である。
【００２２】
第２には、接続部分１０１Ａ１〜１０１Ｅ１を、長い筒状体１０１ｆと止めねじ１０１ｊとによって形成するとともに、止めねじ１０１ｌｊを長い円筒体１０１ｆの中心穴（図示せず）に通して、止めねじ１０１ｌｊの保持部分１０３Ａ〜１０３Ｅ側に設けたねじ部分によって保持部分１０３Ａ〜１０３Ｅに固定するように構成した箇所である。そして、アンテナ素子１０１Ａに関連する部分を斜視すると図１７のような構成になっている。
【００２３】
無線方向探知装置５００を、探知する電波の周波数帯をごく広くして構成する場合には、例えば、図１８・図１９における複数のアンテナ装置１００群のように、上記の第１従来技術・第２従来技術・第３従来技術の構成によるアンテナ装置１００のうちの任意のものを複数選択して垂直方向に配置するとともに、必要に応じて、その上方部分に、さらに高い周波数帯用のアンテナ装置１００Ｕと避雷針１８０とを垂直方向に配置して、適宜の固定具、例えば、ボルト・ナットなど固定して一体に組み付けた構成（以下、第８従来技術という）に編成して使用する。
【００２４】
なお、図１８・図１９のような第８従来技術による構成の場合には、各アンテナ装置１００・１００Ｕから得られる各受信信号１００ａをアンテナ切換部分２４０で切換選択していずれか１つのアンテナ装置から得られる受信信号１００ａを受信部分２１０に与えるように構成している。また、各アンテナ装置１００群を上記の第７従来技術と同様に配置するとともに、上記のアンテナ切換部分２４０を設けずに、各アンテナ装置１００・１００Ｕからの受信信号を、それぞれ、別個の各受信部分２１０・方向検出部分２２０・方向表示部分２４０に与えて、各周波数帯の電波の到来方向を同時に探知する構成（以下、第９従来技術という）も周知である。
【００２５】
【発明が解決しようとする課題】
上記の第４従来技術〜第８従来技術による無線方向探知装置５００の構成では、その構成に用いる上記の第１従来技術〜第３従来技術によるアンテナ装置１００を屋外における電波妨害の少ない比較的高い場所、例えば、丘の上、または、ビルの屋上に設置して使用するため、各アンテナ素子１０１Ａ〜１０１Ｅが風圧・風雨圧などを受けて目につかないほどのごく細かい微振動を続ける。
【００２６】
このため、アンテナ装置１００を長期間に亙って使用していると、その微振動による疲労のために、アンテナ素子１０１Ａ〜１０１Ｅの基部付近、例えば、直竿状体によるアンテナ素子では接続部分１０１Ａ１に近いアンテナ素子の管体の部分、または、保持部分１０３Ａ〜１０３Ｅと支持腕体１０２Ａ〜１０２Ｅとの固定部分付近に亀裂が入り、その状態で風圧などによる大きな外力が加わることによってこれらの部分が破損するため、その破損した直竿状体によるアンテナ素子１０１Ａ〜１０１Ｅ、または、支持腕体１０２Ａ〜１０２Ｅ・保持部分１０３Ａ〜１０３Ｅの一体になったものが、地上に落下したり、風に吹き飛ばされたりして、建造物や地上の通行人に危害を与えるという不都合がある。なお、同様の微振動が保持部分１０３Ａ〜１０３Ｅと支持腕体１０２Ａ〜１０２Ｅとの間を固定するねじ止め部分が弛緩して同様の事故による不都合を生ずる場合もある。
【００２７】
こうした場合の対策として、自動車・船舶などに使用する長い垂直アンテナなどの場合には、垂直アンテナの基底部分などに、つる巻き状のばね体を設けて、振動を吸収する対策を採っているが、こうした対策をとった場合には、大きな風圧・風雨圧などによってアンテナ素子が横振れしてしまうため、無線方向探知装置５００の場合には、アンテナ素子に受波される電波の位相自体が変動してしまうので、見掛け上の到来方向Ｄ１が変動してしまい、実用に供し得ないという不都合が生ずる。したがって、上記の微振動で折損しない程度に機械的強度を強化することが考えられるが、こうした強化を行うと、その部分の重量増加のほか、大きさ自体も大きくなるため、風圧抵抗・耐風雨圧抵抗が増加するので、さらに、支持腕体１０２Ａ〜１０２Ｅ・中心基部支持体１２０・柱状体１３０の強化などが必要になり、アンテナ装置１００全体が、さらに大型・大重量のものになってしまい、装置を安価に提供できないほか、アンテナ装置１００の取付装備工費まてが増加するという不都合が生じてしまう。
このため、こうした不都合のないアンテナ装置を用いた無線方向探知装置の提供が望まれているという課題がある。
【００２８】
【課題を解決するための手段】
この発明は、上記のような
中心位置から水平面内に放射状に張り出した複数の支持腕体の先端部位から垂直方向に上下に張り出したアンテナ素子により所定の電波を受波して得られる受信信号にもとづいて上記の電波の到来方向を探知する無線方向探知装置において、
上記のアンテナ素子と上記の支持腕体との間を接続固定するための接続部分とは別個に、上記の電波に影響を与えない材質の屈曲体を主体とする連結部材によって上記のアンテナ素子と上記の支持腕体との間を連結する連結手段を設ける第１の構成と、
【００２９】
この第１の構成において、
上記のアンテナ素子を直竿状体で形成し、上記の連結部材を紐状部材でなる上記の屈曲体と上記の紐状部材の所定の部位を固定するための固定用部材とにより形成するとともに、上記の紐状部材の第１の部位を上記の先端部位に設けた上記のアンテナ素子を保持するための保持部分よりも小さい外形をもつ上記の支持腕体の部位に上記の固定用部材によって固定し、上記の紐状部材の第２の部位を上記の直竿状体の上記の接続部分よりも先端側の部位に上記の固定用部材によって固定するようにした第２の構成と、
【００３０】
上記の第１の構成において、
上記のアンテナ素子を篭状体で形成し、上記の連結部材を紐状部材でなる上記の屈曲体と上記の紐状部材の所定の部位を固定するための固定用部材とにより形成するとともに、上記の紐状部材の第１の部位を上記の先端部位に設けた上記のアンテナ素子を保持するための保持部分よりも小さい外形をもつ上記の支持腕体の部位、すなわち、小外形支持腕部位に上記の固定用部材によって固定し、上記の紐状部材の第２の部位を上記の篭状体の篭部分の中を通すか、または、上記の篭部分の篭枠に巻き付け、上記の紐状部材の第３の部位を上記の小外形支持腕部位に上記の固定用部材によって固定するようにした第３の構成と、
【００３１】
中心位置から水平面内に放射状に張り出した複数の支持腕体の先端部位から垂直方向に上下に張り出したアンテナ素子を設け、上記の支持腕体の水平方向の動きを抑止するために各上記の支持腕体の途中部位の間を水平な第１の竿状体によって固定し、上記の支持腕体の垂直方向の動きを抑止するために各上記の支持腕体の途中部位と、上記の中心位置に設けた柱状体との間を斜めの第２の竿状体によって固定するとともに、上記のアンテナ素子により所定の電波を受波して得られる受信信号にもとづいて上記の電波の到来方向を探知する無線方向探知装置において、
【００３２】
上記のアンテナ素子と上記の支持腕体との間を接続固定するための接続部分とは別個に、上記の電波に影響を与えない材質の屈曲体を主体とする連結部材によって上記のアンテナ素子と、上記の支持腕体の上記の第１・第２の竿状体を固定した部位よりも上記の中心位置に近い部位との間を連結する連結手段
を設ける第４の構成と、
【００３３】
この第４の構成において、
上記のアンテナ素子を直竿状体で形成し、上記の連結部材を紐状部材でなる上記の屈曲体と上記の紐状部材の所定の部位を固定するための固定用部材とにより形成するとともに、上記の紐状部材の第１の部位を上記の支持腕体の上記の第１・第２の竿状体を固定した部位よりも上記の中心位置に近い部位に上記の固定用部材によって固定し、上記の紐状部材の第２の部位を上記の直竿状体の上記の接続部分よりも先端側の部位に上記の固定用部材によって固定するようにした第５の構成と、
【００３４】
上記の第４の構成において、
上記のアンテナ素子を篭状体で形成し、上記の連結部材を紐状部材でなる上記の屈曲体と上記の紐状部材の所定の部位を固定するための固定用部材とにより形成するとともに、上記の紐状部材の第１の部位を上記の支持腕体の上記の第１・第２の竿状体を固定した部位よりも上記の中心位置に近い部位、すなわち、中心側支持腕部位に上記の固定用部材によって固定し、上記の紐状部材の第２の部位を上記の篭状体の篭部分の中を通すか、または、上記の篭部分の篭枠に巻き付け、上記の紐状部材の第３の部位を上記の中心側支持腕部位に上記の固定用部材によって固定するようにした第６の構成と
により上記の課題を解決したものである。
【００３５】
【発明の実施の形態】
この発明の実施の形態として、この発明を上記の第１従来技術〜第３従来技術によるアンテナ装置１００を用いた上記の第４従来技術〜第７従来技術による無線方向探知装置５００に適用した実施例を説明する。
【００３６】
【実施例】
以下、図１〜図８によりこの発明の実施例を説明する。図１〜図８において図９〜図１９の符号と同一符号で示す部分は、図９〜図１９で説明した同一符号の部分と同一の機能をもつ部分であり、また、図１〜図８において同一符号で示す部分は図１〜図８のいずれかにおいて説明する同一符号の部分と同一の機能をもつ部分である。
【００３７】
なお、図１〜図３・図６〜図８では、図１１・図１４・図１７に相当するアンテナ素子１０１Ａの部分に関係する要部の斜視部分と、受信部分２１０・方向検出部分２２０・方向表示部分２３０の部分のみしか示していないが、実際には、他のアンテナ素子１０１Ｂ〜１０１Ｅ・接続部分１０１Ｂ１〜１０１Ｅ１・保持部分１０３Ｂ〜１０３Ｅ・支持腕体１０２Ｂ〜１０２Ｅ・固定用保持体１０４Ｂ〜１０４Ｅ・第１の竿状体１０５Ａ〜１０５Ｅ・第２の竿状体１０６Ａ〜１０６Ｅ・固定用保持体１０７Ａ〜１０７Ｅの部分に関係する要部の斜視部分も、それぞれ、図１〜図３・図６〜図８と同様に構成されており、また、中心位置１１０側の柱状体１３０・中心基部支持体１２０・取付座部分１０２Ａ２〜１０２Ｅ２などに付随する部分は、それぞれ、図９・図１０の構成、図１２・図１３の構成、図１５、図１６の構成と同様に構成されているものである。
【００３８】
したがって、以下の図１〜図３・図６〜図８による構成の説明は、各符号において最後にＡ〜Ｅの付く符号のものについては、そのうちの１つものを代表して、最後にＡの付く符号の部分により説明しているものである。
【００３９】
〔第１実施例〕
以下、図１・図４・図５により第１実施例を説明する。この第１実施例は上記の第１従来技術にこの発明を適用した実施例であり、この第１実施例の構成が図９の第１従来技術のアンテナ装置１００による無線方向探知装置５００の構成と異なる箇所は次の箇所である。
【００４０】
第１には、電波に影響を与えない材質の屈曲体３０１、例えば、図４の〔イ−イ断面〕のように、高張力グラスファイバーの複数本を同心円状に配列したものを合成樹脂系接着剤で一体化して形成した心材３０１ａの周囲を耐候性塩化ビニールで形成した軟質の被覆材３０１ｂで覆った紐状部材３０１、例えば、商品名「デベグラスロープ」を主体として、所要の箇所に紐状部材３０１を固定するための図５の〔ウオーム締帯型〕のような固定用部材３０２を組み合わせた連結部材３１０によって、アンテナ素子１０１Ａと支持腕体１０２Ａ〜１０２Ｅとの間を連結するように構成した箇所である。
【００４１】
第２には、上記の連結部材３１０による連結により、アンテナ素子１０１Ａと支持腕体１０２Ａとの間を正規に接続固定するための接続部分１０１Ａ１とは別個に、アンテナ素子１０１Ａと支持腕体１０２Ａとの間を連結して、保持部分１０３Ａと支持腕１０２Ａとの間に亀裂が生じて破損し、また、アンテナ素子１０１Ａのいずれかがその基部付近で亀裂を生じて破損した際に、その破損により離脱した部分が地上に落下するのを防止するための落下防止用連結を行うように構成している箇所である。
【００４２】
第３には、紐状部材３０１・固定用部材３０２でなる連結部材３１０の支持腕体１０２Ａに対する固定を、保持部分１０３Ａを支持腕体１０２Ａに差し込んで固定する筒状部分１０３Ａ１の外形よりも小さい外形をもつ支持腕体１０２Ａの部位に固定するようにして、仮に、上記の微振動により保持部分１０３Ａと支持腕体１０２Ａとの固定部分付近に亀裂が入って破損した場合や同固定部分の止めねじが弛緩して抜けた場合でも、支持腕体１０２Ａに固定用部材３０２で固定した紐状部材３０１によって、アンテナ素子１０１Ａ・保持部分１０３Ａの一体になった部分が紐状部材３０１によって脱落防止できるように構成した箇所である。
【００４３】
第４には、紐状部材３０１・固定用部材３０２でなる連結部材３１０の直竿状体でなるアンテナ素子１０１Ａに対する固定を、アンテナ素子１０１Ａの接続部分１０１Ａ１よりも先端側の部位に固定するようにして、仮に、上記の微振動によって直竿状体によるアンテナ素子１０１Ａの接続部分１０１Ａ１にごく近い直竿状体の管体の部分に亀裂が入って破損した場合でも、破損箇所よりも先端側に固定用部材３０２によって紐状部材３０１を固定したことにより、破損した箇所よりも先端側のアンテナ素子の部分が紐状部材３０１によって脱落防止できるように構成した箇所である。
【００４４】
第５には、紐状部材３０１を、図４の〔両端環状型〕のように、両端の端末３０１ｄを折り返して、この折り返した部分の端部に端部固定部分３０１ｅを、テープ、例えば、強化ポリエステル、すなわち、ＦＲＰ材のテープを巻き付けて接着固定し、その外周を、架橋ポレオフィン樹脂材の熱収縮チューブで覆うことにより、紐状部材３０１の両端に環状部分３０１Ａ・３０１Ｂを形成して構成した箇所である。
【００４５】
第６には、固定用部材３０２を、図５の〔ウオーム締帯型〕のような水道ホースの締付などに用いられている締付バンド、例えば、商品名「ホースクランプ」で構成した箇所である。そして、固定用部材３０２は、例えば、ステンレス鋼板の帯状体３０２ａにウオーム歯車の歯形に代わる歯形穴３０２ｂを設けておくとともに、帯状体３０２ａの一端には、ウオーム３０２ｃの軸に、その軸をドライバーなとで回転する部分、例えば、ドライバー溝３０２ｄを設けたウオーム機構部分３０２ｅを設けておき、帯状体３０２ａの他端側を解放端３０２ｆに形成しておくことにより、帯状体３０２ａの部分を固定したい箇所に巻き付けた後に、解放端３０２ｆをウオーム３０２ｃの下側に設けた案内穴３０２ｇに入れ込んでウオーム３０２ｃを回転させ、帯状体３０２ａで巻き付けた部分を締め付けて固定するように構成してある。
【００４６】
第６には、支持腕体１０２Ａに対する紐状部材３０１の固定を、具体的には、まず、支持腕体１０２Ａに固定用部材３０２を固定する部位の箇所に、支持腕体・紐状部材の保護と滑り止めを兼ねさせるための保護層３２０として、屋外絶縁用の軟質塩化ビニール３２０Ａ、例えば、商品名「ビニール粘着テープ」を巻き付けるとともに、固定用部材３０２の帯状体３０２ａの部分に、加熱によって形状が収縮する合成樹脂のチューブ（図示せず）、例えば、商品名「収縮チューブ」を嵌め込んで収縮させることにより、紐状部材３０１の損傷防止用の保護覆（図示せず）を形成しておき、紐状部材３０１の一方の環状部分３０１Ａの穴の中に、帯状体３０２ａの部分を入れ込んだ後に、上記のウオーム３０２ｃによる締付を行って固定している箇所である
【００４７】
第７には、直竿状体によるアンテナ素子１０１Ａに対する紐状部材３０１の固定を、具体的には、まず、アンテナ素子１０１Ａに固定用部材３０２を固定する部位の箇所に、直竿状体・紐状部材の保護と滑り止めを兼ねさせるための保護層３２０として、上記の軟質塩化ビニールテープ３２０Ａと同様のテープ３３０Ａを巻き付けるとともに、固定用部材３０２の帯状体３０２ａの部分に、上記の合成樹脂のチューブと同様の合成樹脂のチューブを嵌め込んで収縮させることにより、紐状部材３０１の損傷防止用の保護覆（図示せず）を形成しておき、次に、紐状部材３０１の他方の環状部分３０１Ｂの穴の中に、帯状体３０２ａの部分を入れ込んだ後に、上記のウオーム３０２ｃによる締付を行って固定している箇所である。
【００４８】
つまり、この第１実施例の構成は、概括的には、上記のような
中心位置１１０から水平面内に放射状に張り出した複数の支持腕体１０２Ａ〜１０２Ｅの先端部位、すなわち、先端部分の位置から垂直方向に上下に張り出したアンテナ素子１０１Ａ〜１０１Ｅにより所定の電波を受波して得られる受信信号１００ａにもとづいて上記の電波の到来方向Ｄ１を探知する無線方向探知装置５００において、
【００４９】
上記のアンテナ素子１０１Ａ〜１０１Ｅと上記の支持腕体１０２Ａ〜１０２Ｅとの間を接続固定するための接続部分１０１Ａ１〜１０１Ｅ１とは別個に、上記の電波に影響を与えない材質の屈曲体を主体とする連結部材３１０、例えば、強化グラスファイバーの心材３０１ａを耐候性塩化ビニールの被覆材３０１ｂで被覆した材質の紐状部材３０１を主体とする連結部材３１０によって上記のアンテナ素子１０１Ａ〜１０１Ｅと上記の支持腕体１０２Ａ〜１０２Ｅとの間を連結する連結手段
を設けた上記の第１の構成を構成しているものである。
【００５０】
また、上記の第１の構成において、
上記のアンテナ素子１０１Ａ〜１０１Ｅを直竿状体で形成し、上記の連結部材３１０を紐状部材、例えば、強化グラスファイバーの心材３０１ａを耐候性塩化ビニールの被覆材３０１ｂで被覆した材質の紐状部材３０１でなる上記の屈曲体と、上記の紐状部材３０１の所定の部位を固定するための固定用部材、例えば、ウオーム３０２ｃにより締め付ける帯状体３０２ａでなる固定用部材３０２とにより形成するとともに、上記の紐状部材３０１の第１の部位、例えば、一方の環状部分３０１Ａを上記の先端部位、すなわち、支持腕体１０２Ａ〜１０２Ｅの先端部分の位置に設けた上記のアンテナ素子１０１Ａ〜１０１Ｅを保持するための保持部分１０３Ａ〜１０３Ｅよりも小さい外形をもつ上記の支持腕体１０２Ａ〜１０２Ｅの部位に上記の固定用部材３０２によって固定し、上記の紐状部材３０１の第２の部位、例えば、他方の環状部分３０１Ｂを上記のアンテナ素子１０１Ａ〜１０１Ｅの直竿状体の接続部分１０１Ａ１〜１０１Ｅ１よりも先端側の部位を上記の固定用部位３０２によって固定するようにした上記の第２の構成を構成しているものである。
【００５１】
〔第２実施例〕
以下、図２〜図５により第２実施例を説明する。この第２実施例の構成のうち、図２の構成は上記の第２従来技術にこの発明を適用した実施例であり、また、図３の構成は上記の第３従来技術にこの発明を適用した実施例である。
【００５２】
そして、図２の構成が図１の第１実施例の構成と異なる箇所は、アンテナ素子１０１Ａの部分を、上記の第２従来技術による図１４の〔大篭アンテナ型〕の構成における大きい篭状体のアンテナ素子１０１Ａに変更して構成するとともに、連結部材３１０の紐状部材３０１の途中部分の箇所を上下のアンテナ素子１０１Ａの各篭枠１０１ａの部分に巻き付けて構成した箇所である。
【００５３】
さらに、具体的には、紐状部材３０１を、例えば、上側のアンテナ素子１０１Ａの篭枠１０１ａの一方側から巻き付けた後に、先端部分の円環状体１０１ｃの穴の中を通してから、他方側の篭枠１０１ａに巻き付け、さらに、下側のアンテナ素子１０１Ａについても同様に巻き付けておき、そして、紐状部材３０１の両端の環状部分３０１Ａ・３０１Ｂの中に固定用部材３０２の帯状体３０２ａを入れ込んでから、固定用部材３０２を支持腕体１０２Ａに取り付けた後に、ウオーム３０２ｃにより締め付けて固定するように構成したものである。
【００５４】
また、図３の構成が図１の第１実施例の構成と異なる箇所は、アンテナ素子１０１Ａの部分を、上記の第３従来技術による図１７の〔小篭アンテナ型〕の構成における小さい篭状体のアンテナ素子１０１Ａに変更して構成するとともに、連結部材３１０の紐状部材３０１の途中部分の箇所を上下のアンテナ素子１０１Ａの篭部分１０１ｙの中を通して構成した箇所である。
【００５５】
さらに、具体的には、紐状部材３０１を、１つの篭枠１０１ａを通した後に他の篭枠１０１ａに通すようにして、篭部分１０１ｙの中を通し、紐状部材３０１の両端の環状部分３０１・３０１Ｂを、上記の図２の構成の場合と同様に、固定部材３０２の帯状体３０２ａに通して、同様に支持腕体１０２Ａに固定するように構成したものである。
【００５６】
したがって、図２・図３のいずれの構成の場合にも、上記の第１実施例と同様に、
第１には、上記の連結部材３１０による連結により、アンテナ素子１０１Ａと支持腕体１０２Ａとの間を正規に接続固定するための接続部分１０１Ａ１とは別個に、アンテナ素子１０１Ａと支持腕体１０２Ａとの間を連結することにより、仮に、上記の微振動により保持部分１０３Ａと支持腕体１０２Ａとの固定部分付近に亀裂が入って破損した場合や同部分を固定する止めねじが弛緩して抜けた場合でも、支持腕体１０２Ａに固定用部材３０２で固定した紐状部材３０１によって、アンテナ素子１０１Ａ・保持部分１０３Ａの一体になった部分が紐状部材３０１によって脱落防止できるように構成している。
【００５７】
第２には、紐状部材３０１による大い篭部分１０ｘによるアンテナ素子１０１Ａの支持腕体１０２Ａに対する連結を、紐状部材３０１を篭枠１０１ｘに巻き付けて連結することにより、仮に、上記の微振動により保持部分１０３Ａと支持腕体１０２Ａとの固定部分付近に亀裂が入って破損した場合や接続部分の止めねじが弛緩して抜け、上下のアンテナ素子１０１Ａが別個に外れた場合でも、支持腕体１０２Ａに固定用部材３０２で固定した紐状部材３０１によって、上下のアンテナ素子１０１Ａと保持部分１０３Ａの一体になった部分が紐状部材３０１によって脱落防止できるように構成している。
【００５８】
第３には、紐状部材３０１による小さい篭部分１０ｘによるアンテナ素子１０１Ａの支持腕体１０２Ａに対する連結を、紐状部材３０１を篭部分１０１ｙの中に通して連結することにより、仮に、上記の微振動により保持部分１０３Ａと支持腕体１０２Ａとの固定部分に亀裂が入って破損した場合や接続部分の止めねじが弛緩して、上下のアンテナ素子１０１Ａが別個に外れた場合でも、支持腕体１０２Ａに固定用部材３０２で固定した紐状部材３０１によって、上下のアンテナ素子１０１Ａと保持部分１０３Ａの一体になった部分が紐状部材３０１によって脱落防止できるように構成している。
【００５９】
つまり、この第２実施例の構成は、概括的には、上記の第１の構成において、上記のアンテナ素子１０１Ａ〜１０１Ｅを篭状体で形成し、上記の連結部材３１０を紐状部材３０１でなる上記の屈曲体と、上記の紐状部材３０１の所定の部位を固定するための固定用部材３０２とにより形成するとともに、上記の紐状部材３０１の第１の部位、例えば、一方の環状部分３０１Ａを上記の先端部位、すなわち、支持腕体１０２Ａ〜１０２Ｅの先端部分の位置に設けた上記のアンテナ素子１０１Ａ〜１０１Ｅを保持するための保持部分１０３Ａ〜１０３Ｅよりも小さい外形をもつ上記の支持腕体１０２Ａ〜１０２Ｅの部位、すなわち、小外形支持腕部位に上記の固定用部材３０２によって固定し、上記の紐状部材３０１の第２の部位、例えば、紐状部材３０１の途中部分を上記の篭状体の篭部分１０１ｙの中を通すか、または、上記の篭部分１０１ｘの篭枠１０１ａに巻き付け、上記の紐状部材３０１の第３の部位、例えば、他方の環状部分３０１Ｂを上記の小外形支持腕部位に上記の固定用部材３０２によって固定するようにした第３の構成を構成していることになる。
【００６０】
なお、図２の〔大篭アンテナ型〕の構成の場合における連結体３１０の構成を、図３の〔小篭アンテナ型〕の構成の場合における連結体３１０の構成と同様に、紐状体３０１を篭部分１０１ｘの中に通す構成に変更して、図３の〔小篭アンテナ型〕の構成の場合と同様の効果を得られるように構成し得ることは言うまでもない。
【００６１】
〔第３実施例〕
以下、図４〜図６により第３実施例を説明する。この第３実施例は上記の図１の第１実施例における連結部材３１０の固定の仕方を変更した実施例であり、第３実施例の構成が第１実施例の構成と異なる箇所は、連結部材３１０の紐状部材３０１の両端の環状部分３０１・３０１Ｂを固定用部分３０２で固定する部位を上記の第１実施例の場合によりも離れた位置に変更するとともに、その離れた分によって長くなった紐状部材３０１の途中部分を図５の〔逆爪締帯型〕のような固定用部材３０３によって固定するようにした箇所である。
【００６２】
そして、具体的には、支持腕体１０２Ａに紐状体３０１の一方の環状部分３０１Ａを固定用部材３０２で固定する部位を、支持腕体１０２Ａのステイ取付部分、すなわち、固定用保持体１０４Ａ・第１の竿状体１０５Ａ・第２の竿状体１０６Ａを設けた位置よりも中心位置１１０側に近い部位に変更することにより、第１実施例の場合よりも、さらに強度の高い支持腕体１０２Ａの部分に固定するようにして、仮に、上記の微振動により保持部分１０３Ａと支持腕体１０２Ａとの固定部分に亀裂が入って破損した場合や接続部分の止めねじが弛緩して抜けた場合でも、支持腕体１０２Ａに固定用部材３０２で固定した紐状部材３０１によって、アンテナ素子１０１Ａ・保持部分１０３Ａの一体になった部分が紐状部材３０１によって脱落防止できるように構成している。
【００６３】
また、アンテナ素子１０１Ａの直竿状体に固定用部材３０２を固定する部位も、第１実施例の場合よりも、直竿状体がさらに細くなる先端側に寄った部位に変更することにより、仮に、上記の微振動によって直竿状体によるアンテナ素子１０１Ａの接続部分１０１Ａ１にごく近い管体の部分に亀裂が入って破損した場合でも、破損箇所よりも、さらに先端側に固定用部材３０２によって紐状部材３０１を固定したことにより、破損した箇所よりも先端側のアンテナ素子の部分が紐状部材３０１によって脱落防止できるように構成している。
【００６４】
さらに、紐状部材３０１の途中部分を、適宜の間隔によって、固定用部材３０３で固定することにより、紐状部材３０１の途中部分が風圧・風雨圧でぶらついて疲労損傷を起こさないように構成している。
【００６５】
固定用部材３０３は、図５の〔逆爪締帯型〕のように、ホリアミド系の耐候性合成樹脂材、例えば、商品名「６６ナイロン樹脂」にカーボン粉末を混入して形成した帯状体３０３ａの外面側に断面が鋸歯状の引掛部分３０３ｂを設けておき、帯状体３０３ａの一端側に帯状体３０３ａが入り込める案内穴３０３ｃと逆止爪３０３ｄとをもつ逆止部分３０３ｅを設けるとともに、帯状体３０３ａの他端側を解放端３０３ｆに形成しておくことにより、帯状体３０３ａの部分を固定したい箇所に巻き付けた後に、解放端３０３ｆを案内穴３０３ｃに貫通させて、解放端３０２ｆを強く引っ張り、帯状体３０３ａで巻き付けた部分を締め付けると、その位置で逆止爪３０３ｄによって帯状体３０３ａが固定できるように構成したもので、例えば、商品名「タイラップ」である。
【００６６】
つまり、この第３実施例の構成は、概括的には、上記のような
中心位置１１０から水平面内に放射状に張り出した複数の支持腕体１０２Ａ〜１０２Ｅの先端部位、すなわち、先端部分の位置から垂直方向に上下に張り出したアンテナ素子１０１Ａ〜１０１Ｅを設け、上記の支持腕体１０２Ａ〜１０２Ｅの水平方向の動きを抑止するために各上記の支持腕体１０２Ａ〜１０２Ｅの途中部位の間を水平な第１の竿状体１０５Ａ〜１０５Ｅによって固定し、上記の支持腕体１０２Ａ〜１０２Ｅの垂直方向の動きを抑止するために各上記の支持腕体１０２Ａ〜１０２Ｅの途中部位と、上記の中心位置１１０に設けた柱状体１３０との間を斜めの第２の竿状体１０６Ａ〜１０６Ｅによって固定するとともに、上記のアンテナ素子１０１Ａ〜１０１Ｅにより所定の電波を受波して得られる受信信号にもとづいて上記の電波の到来方向Ｄ１を探知する無線方向探知装置５００において、
【００６７】
上記のアンテナ素子１０１Ａ〜１０１Ｅと上記の支持腕体１０２Ａ〜１０２Ｅとの間を接続固定するための接続部分１０１Ａ１〜１０１Ｅ１とは別個に、上記の電波に影響を与えない材質の屈曲体を主体とする連結部材３１０、例えば、強化グラスファイバーの心材３０１ａを耐候性塩化ビニールの被覆材３０１ｂで被覆した材質の紐状部材３０１を主体とする連結部材３１０によって、上記のアンテナ素子１０１Ａ〜１０１Ｅと、上記の支持腕体１０２Ａ〜１０２Ｅの上記の第１・第２の竿状体１０５Ａ〜１０５Ｅ・１０６Ａ〜１０６Ｅを固定した部位よりも上記の中心位置１１０に近い部位との間を連結する連結手段
を設けた上記の第４の構成を構成していることなる。
【００６８】
さらに、また、上記の第４の構成において、
上記のアンテナ素子１０１Ａ〜１０１Ｅを直竿状体で形成し、上記の連結部材３１０を紐状部材３０１でなる上記の屈曲体と上記の紐状部材３０１の所定の部位を固定するための固定用部材３０２とにより形成するとともに、上記の紐状部材３０１の第１の部位、例えば、一方の環状部分３０１Ａを上記の支持腕体１０２Ａ〜１０２Ｅの上記の第１・第２の竿状体１０５Ａ〜１０５Ｅ・１０６Ａ〜１０６Ｅを固定した部位よりも上記の中心位置１１０に近い部位に上記の固定用部材３０２によって固定し、上記の紐状部材３０１の第２の部位、例えば、他方の環状部分３０１Ｂを上記の直竿状体の上記の接続部分１０１Ａ１〜１０１Ｅ１よりも先端側の部位に上記の固定用部材３０２によって固定するようにした上記の第５の構成を構成していることなる。
【００６９】
〔第４実施例〕
以下、図４・図５・図７により第４実施例を説明する。この第４実施例は上記の図２の第２実施例における連結部材３１０の固定の仕方を変更した実施例であり、第４実施例の構成が第２実施例の構成と異なる箇所は、連結部材３１０を支持腕体１０２Ａに固定する部分のみを上記の図６の第３実施例における同部分と同様に、変更して構成した箇所である。
【００７０】
そして、具体的には、支持腕体１０２Ａに紐状体３０１の一方の環状部分３０１Ａを固定用部材３０２で固定する部位を、支持腕体１０２Ａのステイ取付部分、すなわち、固定用保持体１０４Ａ・第１の竿状体１０５Ａ・第２の竿状体１０６Ａを設けた位置よりも中心位置１１０側に近い部位に変更することにより、第２実施例の場合よりも、さらに強度の高い支持腕体１０２Ａの部分に固定するようにして、仮に、上記の微振動により保持部分１０３Ａと支持腕体１０２Ａとの固定部分付近に亀裂が入って破損した場合や同固定部分の止めねじが弛緩して抜けたりした場合でも、支持腕体１０２Ａに固定用部材３０２で固定した紐状部材３０１によって、アンテナ素子１０１Ａ・保持部分１０３Ａの一体になった部分が紐状部材３０１によって脱落防止できるように構成している。
【００７１】
なお、図示していないが、アンテナ素子１０１Ａに対する連結部材３１０の連結、すなわち、紐状部材３０１の連結の仕方を、上記の第３実施例における図３の構成の場合と同様に、篭部分１０１ｘの中を通すだけの構成に変更して構成することも、この第４実施例に含むものである。
【００７２】
したがって、この第４実施例の構成によれば、連結部材３１０を支持腕体１０２Ａに連結する部分、すなわち、紐状部材３０１を固定部材３０２で支持腕体１０２Ａに固定する部分の構成が上記の第３実施例の同部分と同様の脱落防止を行えることになる。
【００７３】
また、連結部材３１０をアンテナ素子１０１Ａに連結する部分、すなわち、紐状体３０１をアンテナ素子１０１Ａの篭状体の篭部分１０１ｘの中に通し、または、紐状体３０１をアンテナ素子１０１Ａの篭枠１０１ａの巻き付ける部分が上記の第２実施例の図２の構成の同部分における抜け止めと、第２実施例の図３の構成の同部分と同様の脱落防止を行えることになる。
【００７４】
つまり、この第４実施例の構成は、概括的には、
上記の第４の構成において、
上記のアンテナ素子１０１Ａ〜１０１Ｅを篭状体で形成し、上記の連結部材３１０を紐状部材３０１でなる上記の屈曲体と、上記の紐状部材３０１の所定の部位を固定するための固定用部材３０２とにより形成するとともに、上記の紐状部材３０１の第１の部位、例えば、一方の環状部分３０１Ａを上記の支持腕体１０２Ａ１０２Ｅの上記の第１・第２の竿状体１０５Ａ〜１０５Ｅ・１０６Ａ〜１０６Ｅを固定した部位よりも上記の中心位置１１０に近い部位、すなわち、中心側支持腕部位に、上記の固定用部材３０２によって固定し、上記の紐状部材３０２の第２の部位、例えば、紐状部材３０２の途中部分を上記の篭状体、すなわ、アンテナ素子１０１Ａ〜１０１Ｅの篭状体の篭部分１０１ｘの中を通すか、または、上記の篭部分１０１ｘの篭枠１０１ａに巻き付け、上記の紐状部材３０１の第３の部位、例えば、他方の環状部分３０１Ｂを上記の中心側支持腕部位に上記の固定用部材３０２によって固定するようにした上記の第６の構成を構成していることになる。
【００７５】
〔変形実施〕
この発明は次のように変形して実施することを含むものである。
（１）図１の第１実施例または図６の第３実施例の構成における紐状部材３０１を、図４の〔片側環状型〕のように、環状部分３０１Ｂに相当する部分を無くして、紐状部材３０１の端末３０１ｄに、端部固定部分３０１ｅと同様にして端末部分３０１ｄを補強した構造に変更するとともに、この端末３０１ｄ・３０１ｅの部分を、図８の〔端末固定型〕のように、固定部材３０２を通した箇所に位置付けて構成する。
【００７６】
（２）図１の第１実施例または図６の第３実施例の構成において、上下のアンテナ素子１０１Ａ〜１０１Ｅに各個別に配置している紐状部材３０１を１つの連続した共通の紐状部材３０１に変更し、図８の〔共通紐状部材型〕のように、紐状部材３０１の第２の部位を紐状部材３０１の途中部分３０１Ｙに変更するとともに、途中部分３０１Ｙを固定部材３０２でアンテナ素子１０１Ａ〜１０１Ｅの直竿状体に固定するように変更して構成する。
【００７７】
（３）図１の第１実施例または図６の第３実施例の構成において、上下のアンテナ素子１０１Ａ〜１０１Ｅに各個別に配置している上下の２本の紐状部材３０１を、図８の〔途中環状部材型〕のように、１本の紐状部材３０１の途中部分に環状部分３０１Ａ・３０１Ｂと同様の環状部分３０１Ｃ・３０１Ｄを間隔を離して設けた紐状部材３０１Ｘに変更するとともに、アンテナ素子１０１Ａ〜１０１Ｅ側の固定用部材３０２を環状部分３０１Ｃ・３０１Ｄに通して固定するように変更して構成する。
【００７８】
（４）第１実施例〜第４実施例と上記（１）〜（３）との構成において、各固定用部材３０２で固定する紐状部材３０１の第１の部位〜第３の部位を適宜な別の部位に変更、例えば、支持腕体１０２Ａ〜１０２Ｅ側に固定する部位を、紐状部材３０１の途中部分などに変更して構成する。
【００７９】
（５）第１実施例〜第４実施例におけるアンテナ装置１００の部分を、図１８・図１９の〔多段アンテナ型〕構成の第８従来技術による複数のアンテナ装置１００群と同様のアンテナ装置１００群をもつ〔多段アンテナ型〕構成に変更するとともに、受信部分２１０の入力側に第７従来技術におけるアンテナ切換部分２４０と同様のアンテナ切換部分２４０を設けて構成する。
【００８０】
（６）第１実施例〜第４実施例におけるアンテナ装置１００の部分を、図１８・図１９の〔多段アンテナ型〕構成の第８従来技術による複数のアンテナ装置１００群と同様のアンテナ装置１００群をもつ〔多段アンテナ型〕構成に変更するとともに、第９従来技術と同様に各アンテナ装置１００の各アンテナ素子１０１Ａ〜１０１Ｅから得られる各受信部分２１０を、それぞれ、別個の受信部分２１０・方向検出部分２２０・方向表示部分１３０に与えて、同時に、各周波数帯の電波の到来方向Ｄ１を探知するように構成する。
【００８１】
（７）第２実施例の図３の構成において、支持腕体１０２Ａ〜１０２Ｅに固定する固定用部材３０１の位置を、保持部分１０３Ａ〜１０３Ｅに近い位置、例えば、矢印３０１Ｒで示す位置に変更することにより、紐状部材３０１の弛みを少なくして構成する。
（８）第２実施例の図３の構成において、支持腕体１０２Ａ〜１０２Ｅに沿った紐状部材３０１の途中部分、例えば、矢印３０１Ｒで示す位置を固定用部材３０３で固定することにより、紐状部材３０１の弛みを無くして構成する。
【００８２】
（９）紐状部材３０１で形成している連結部材３１０の屈曲体を、他の部材、例えば、被覆材３０１ｂが無く心材３０１のみで形成した紐状体、または、グラスファイバー入りのポリエステル樹脂またはエポキシ樹脂などの強化繊維入り合成樹脂材で形成した鎖による鎖状体などに変更して構成する。
【００８３】
（１０）〔大篭アンテナ型〕〔小篭アンテナ型〕の構成における篭部分１０１ｘ・１０１ｙの形状を、他の形状、例えば、篭枠１０１ａを「コの字形」の棒状体または管状体で形成し、もしくは粗い網状体で形成するなどよる篭部分に変更したアンテナ装置１００に適用して構成する。
【００８４】
（１１）第２実施例の図３の構成において、各支持腕体１０２Ａ〜１０２Ｅに固定した紐状部材３０１の環状部分３０１Ａ・３０１Ｂの部分に、図８の〔補足巻付型〕のように、紐状部材３０１と同様の紐状部材３０１Ｚを通した後に、その両端の環状部分３０１Ｅ・３０１Ｆを、固定部材３０２・保護層３２０と同様の固定部材３０２Ｘ・保護層３４０によって、取付座部分１０２Ａ２〜１０２Ｅ２のうちの任意の１つに固定するように変更して構成する。
（１２）第２実施例の図３の構成において、各支持腕体１０２Ａ〜１０２Ｅに別個に固定している複数の紐状部材３０１を全て１本の連続した紐状部材３０１に変更し、この１本の紐状部材３０１の環状部分３０１Ａ・３０１Ｂの部分を任意の１つ支持腕体、例えば、支持腕体１０２Ａに、図３と同様に固定し、その紐状部材３０１の途中部分を、全ての篭部分１０１ｙの中に通しながら、他の支持腕体に配置した固定部材３０２・保護層３２０を通して固定するように変更して構成する。
【００８５】
【発明の効果】
この発明によれば、以上のように、各アンテナ素子と各支持腕体との間を接続固定するための正規の接続部分とは別個に、電波に影響を与えない材質の屈曲体を主体とする連結部材で連結しているため、アンテナ素子の基部付近が風圧・風雨圧による微振動によって亀裂が入り、アンテナ素子を保持する保持部分と支持腕体との固定部分付近が破損した場合や同固定部分の止めねじが弛緩して抜けた場合でも、アンテナ素子・保持部分が連結部材で脱落防止されるため、建造物や下方を通る人畜に危害を与えるような事故を未然に防止できるとともに、電波の方向探知に影響を与えないようにした無線方向探知装置を提供し得るなどの特長がある。
【図面の簡単な説明】
図面中、図１〜図８はこの発明の実施例を、また、図９〜図１９は従来技術を示し、各図の内容は次のとおりである。
【図１】要部構成拡大斜視図
【図２】要部構成拡大斜視図
【図３】要部構成拡大斜視図
【図４】要部分解要素拡大斜視図
【図５】要部分解要素拡大斜視図
【図６】要部構成拡大斜視図
【図７】要部構成拡大斜視図
【図８】要部構成拡大斜視図
【図９】全体構成正面図
【図１０】全体構成平面図
【図１１】要部構成拡大斜視図
【図１２】全体構成正面図
【図１３】全体構成平面図
【図１４】要部構成拡大斜視図
【図１５】全体構成正面図
【図１６】全体構成平面図
【図１７】要部構成拡大斜視図
【図１８】全体組付構成正面図
【図１９】全体組付構成正面図
【符号の説明】
１００アンテナ装置
１００Ｘアンテナ装置
１００Ｕアンテナ装置
１００ａ受信信号
１０１Ａ〜１０１Ｅアンテナ素子
１０１Ａ１〜１０１Ｅ１接続部分
１０１ａ篭枠
１０１ｂ角部分
１０１ｃ円環状体
１０１ｄ円筒体
１０１ｅ止めねじ
１０１ｆ円筒体
１０１ｇボス部分
１０１ｈボス部分
１０１ｊ止めねじ
１０１ｘ篭部分
１０１ｙ篭部分
１０２Ａ〜１０２Ｅ支持腕体
１０２Ａ１〜１０２Ｅ１先端部位
１０２Ａ２〜１０２Ｅ２取付座部分
１０２Ａ３〜１０２Ｅ３途中部位
１０３Ａ〜１０３Ｅ保持部分
１０４Ａ〜１０４Ｅ固定用保持体
１０５Ａ〜１０５Ｅ第１の竿状体
１０６Ａ〜１０６Ｅ第２の竿状体
１０７Ａ〜１０７Ｅ固定用保持体
１１０中心位置
１２０中心基部支持体
１３０柱状体
１３０Ｘ柱状体
１３１配電箱
１８０避雷針
２１０受信部分
２１０ａ増幅信号
２２０方向検出部分
２２０ａ方向信号
２３０方向表示部分
２４０アンテナ切換部分
３０１紐状部材（屈曲体）
３０１Ａ環状部分
３０１Ｂ環状部分
３０１Ｃ環状部分
３０１Ｄ環状部分
３０１ａ心材
３０１ｂ被覆材
３０１ｄ端末部分
３０１ｅ端部固定部分
３０１Ｒ矢印箇所
３０１Ｘ紐状部材
３０１Ｙ途中部分
３０１Ｚ紐状部材
３０２固定部材
３０２ａ帯状体
３０２ｂ歯形穴
３０２ｃウオーム
３０２ｄドライバー溝
３０２ｅウオーム機構部分
３０２ｆ解放端
３０２ｇ案内穴
３０３固定部材
３０３ａ帯状体
３０３ｂ引掛部分
３０３ｃ案内穴
３０３ｄ逆止爪
３０３ｅ逆止部分
３０３ｆ解放端
３１０連結部材
３２０保護層
３２０Ａ塩化ビニールテープ
３３０保護層
３３０Ａ塩化ビニールテープ
５００無線方向探知装置
Ｄ０基準方向
Ｄ１到来方向
Ｘ１上面側
Ｘ２底面側
θ 角度値[0001]
BACKGROUND OF THE INVENTION
The present invention is based on the received signal obtained by receiving a predetermined radio wave by the antenna element vertically projecting from the tip portion of the plurality of support arm bodies projecting radially from the central position in the horizontal plane. The present invention relates to a wireless direction detection device having a configuration for detecting the arrival direction of radio waves.
[0002]
[Prior art]
As an antenna device in this type of wireless direction detection device, a configuration of a [straight antenna type] antenna device 100 as shown in FIGS. , Referred to as “first prior art”, and a configuration (hereinafter referred to as a second antenna type) of an antenna device 100 of a “large antenna type” as shown in FIGS. 12 to 14 that is used for detecting radio waves in a relatively low frequency band. (Referred to as the “prior art”) and the configuration of the “small antenna type” antenna device 100 (hereinafter referred to as “third prior art”) as shown in FIGS. 15 to 17 used for detecting radio waves in a relatively high frequency band. It is well known. In addition, the part shown with the same code | symbol in the following FIGS. 9-19 is a part which has the same function. Moreover, in this invention, a member means the structural material which comprises a predetermined part.
[0003]
Here, the reason why the antenna elements 101A to 101E are formed in a bowl-like shape as in [Large antenna type] and [Small antenna type] is to improve the effective height and wide bandwidth of the antenna, and [ Even in the case of a frequency band that uses a [straight antenna type], it is better to use a saddle-like body. However, if a saddle-like body is used, the mechanical strength of the portions of the supporting arm bodies 102A to 102E that support it is maintained. This is because it becomes difficult.
[0004]
In these antenna devices 100, the plurality of antenna elements 101 A to 101 E project vertically from the respective tip portions 102 A 1 to 102 E 1 of the plurality of support arm bodies 102 A to 102 E that project radially from the center position 110 in the horizontal plane. The arrangement is such that the arrival direction D1 of the radio wave is detected based on a received signal obtained by receiving a predetermined radio wave (not shown) by each of the antenna elements 101A to 101E. This detection is performed, for example, by measuring an angle value θ with respect to the reference direction D0, for example, the true north direction.
[0005]
In addition, although the upper surface side X1 of the center position 110 of the antenna device 100, that is, the upper surface side X1 of the center base support 120 is depicted in an open shape in each drawing, when the antenna device 100 is used alone, It is configured so as to be closed with an appropriate waterproof cover (not shown), and if necessary, an appropriate columnar body (not shown) is further provided below the columnar body 130 provided below the center base support 120. To make up.
[0006]
Also, a plurality of different antenna devices 100 for receiving radio waves of different frequency bands are arranged in the vertical direction, and configured as, for example, a [multi-stage antenna type] antenna device 100X as shown in FIGS. In this case, the columnar body 130 of the antenna device 100 located on the upper surface side X1 is configured by adding the bottom surface side X2. If necessary, as shown in FIG. 19, an auxiliary columnar body 130X for setting the height of the antenna device 100 to a required height may be added.
[0007]
The antenna elements 101A to 101E and the supporting arm bodies 102A to 102E are arranged in an odd number, for example, five as shown in each figure, and in an even number, for example, six. There is a case to do.
[0008]
The configuration of the radio direction detecting device 500 is based on the received signal 100a obtained by receiving the radio wave of the frequency selected and specified by the receiving portion 210 by the antenna elements 101A to 101E of the antenna device 100, and the arrival of the radio wave. The direction signal D1 is detected, and, for example, a direction signal representing the arrival direction D1 of the radio wave is obtained by subjecting the amplified signal 210a obtained by amplifying the received signal 100a at the receiving portion 210 to the required detection processing at the direction detecting portion 220. 220a is obtained, and the direction signal 220a is given to the direction display portion 230 so that the arrival direction D1 of the radio wave is displayed on the analog value direction display screen or the digital value display screen.
[0009]
As a direction detection method of such a wireless direction detection device 500, a configuration using a so-called Berini Toshi type direction detection method (hereinafter referred to as a fourth conventional technology), a configuration based on a Doppler type direction detection method (hereinafter referred to as a fifth conventional technology). ), A configuration of an interferometer type direction detection method (hereinafter referred to as sixth conventional technology), a MUSIC type direction detection method (hereinafter referred to as seventh conventional technology) improved from the interferometer type, and the like.
[0010]
In the Berini Toshi type direction detection method, each antenna element 101A to 101E is formed as an Adcock type antenna, and the output of each antenna element 101A to 101E is provided in a hollow portion in the central base support 120 (see FIG. The goniometer is configured such that a received signal 100a obtained by mechanical or electronic rotation is applied to the receiving portion, and the minimum sensitivity direction caused by the rotation is detected as a direction of arrival of radio waves. In general, the antenna elements 101A to 101E are arranged in an even number.
[0011]
In the direction detection method of the Doppler method, each antenna element 101A to 101E is formed as a dipole antenna, and each output of each antenna element 101A to 101E is provided in a hollow portion in the central base support 120. The maximum direction of phase change at the time of switching of the received signal 100a obtained by receiving the signal while switching to a switching scan portion (not shown) and sequentially switching the switching scan in a predetermined circulation direction, for example, clockwise. It is configured to detect the arrival direction of radio waves, and the number of antenna elements 101A to 101E may be an even number or an odd number.
[0012]
In the interferometer type direction detection method, each antenna element 101A to 101E is formed as a dipole antenna, and each receiving portion 210 is provided so as to correspond to each antenna element 101A to 101E. It is configured to detect the arrival direction of radio waves based on the phase difference of each amplified signal 210a that accurately maintains the phase corresponding to the phase of the frequency of the radio waves when arriving at 101A to 101E. The MUSIC direction detection method is a method of detecting radio waves coming from different directions at the same frequency by detecting the arrival direction of radio waves based on the difference in phase and amplitude in each amplified signal 210a as in the interferometer type direction detection method. Are also improved so that each direction of arrival can be detected. That the arrangement number of each antenna element 101A~101E, there are a case of a plurality and odd for even multiple.
[0013]
The antenna device 100 of [straight antenna type] of FIGS. 9 to 11, that is, the configuration of the first prior art, specifically, a plurality of radial projections from the center position 110 in the horizontal plane. The support arm bodies 102A to 102E are, for example, metal tube bodies, and are fixed to the center position 110 side by screwing a mounting seat portion 102A2 to 102E2, for example, a cast metal object with a packing interposed. The mounting seat portions 102A2 to 102E2 are screwed and fixed to the center base support 120, for example, a cast metal object, and the antennas projecting up and down from the tip portions 102A1 to 102E1 of the support arms 102A to 102E. The elements 101A to 101E are held in insulating holding portions 103A to 103E, for example, a molded body of a synthetic resin material containing reinforcing fibers. There. The support arm bodies 102A to 102E and the holding portions 103A to 103E are fixed by inserting the support arm bodies 102A to 102E into the cylindrical portions 103A1 to 103E1 molded integrally with the holding portions 103A to 103E, and packing. It is interposed and fixed by screwing important points.
[0014]
Further, each of the antenna elements 101A to 101E is an antenna element formed of a linear rod-shaped body, that is, a straight rod-shaped body, and is, for example, a metal tube with both end portions closed and going to the tip. And is attached to the holding portions 103A to 103E by connecting portions 101A1 to 101E1 provided at the base, for example, a screw portion (not shown) of a metal material and a nut portion. It is fixed. The holding portions 103A to 103E are hollow, and a terminal portion (not shown) for taking out the output of the antenna elements 101A to 101E is provided, and the output of the antenna elements 101A to 101E is supported from this terminal portion. Columns 130 or 130.. Are guided to the central base support 120 via cables (not shown) arranged inside the arm bodies 102A to 102E, and after passing through the goniometer or the switching scanning portion as necessary. The signal is guided to the reception cable 211 as a received signal 100a through a suitable wiring cable (not shown) arranged inside 130X and a wiring box 131 provided near the base of the columnar body 130 or 130X.
[0015]
In order to suppress the movement in the horizontal direction, the supporting arm bodies 102A to 102E are provided with fixing holders in the middle portions 102A3 to 102E3 of the supporting arm bodies 102A to 102E, that is, in the middle portions. 104A-104E, for example, a metal plate bent-former is fixedly provided, and a first hook-like body is horizontally provided between the fixing holders 104A-104E, that is, between the intermediate portions 102A3-102E3. 105A to 105E, for example, a band-like body having a rectangular cross section of a metal material is fixed as a so-called lateral stay.
[0016]
Further, in order to suppress the vertical movement of the support arm bodies 102A to 102E, a columnar body 130 disposed at the middle position of each of the support arm bodies 102A to 102E, for example, the fixing holding bodies 104A to 104E and the central position 110, respectively. For example, between the fixing holders 107A to 107E, which are fixed to a predetermined part of the metal tube, the slanted second flanges 106A to 106E, for example, a rectangular cross section of the metal material is formed. The strip is fixed as a so-called longitudinal stay. That is, a perspective view of a portion related to the antenna element 101A has a configuration as shown in FIG.
[0017]
Further, the [large antenna type] antenna device 100 of FIGS. 12 to 14, that is, the configuration of the second prior art, specifically, the [straight antenna type] of FIGS. 9 to 11 described above. ], That is, the following points are different from the configuration of the first prior art.
[0018]
First, the antenna elements 101A to 101E are provided with a large bowl-shaped body, for example, a plurality of bowl frames 101a in which a round bar or a pipe made of a metal material is formed in a “U” shape in a vertical plane, for example, , 6 are arranged radially on the horizontal plane, and the tip side of the "<" shape is connected to the annular body 101c of the metal material, and the base side of the "<" shape is short of the metal material. A large hook-shaped antenna element is formed by providing a flange 101x that is formed by continuing the cylindrical body 101d and continuously forming all of the fold-shaped portions 101b of the "<" shape by a similar round bar or tube. This is where it was formed.
[0019]
Secondly, the connecting portions 101A1 to 101E1 are formed by the base-side cylindrical body 101d and the set screw 101e, and the set screw 101e is passed through a center hole (not shown) of the cylindrical body 101d to This is a portion configured to be fixed to the holding portions 103A to 103E by a screw portion provided on the holding portions 103A to 103E side. 14 is a perspective view of a portion related to the antenna element 101A.
[0020]
Furthermore, the [small ridge antenna type] antenna device 100 of FIGS. 15 to 17, that is, the configuration of the third prior art, specifically, the [large ridge antenna type] of FIGS. Compared to the configuration of the antenna device 100, that is, the second prior art, the following points are different.
[0021]
First, the antenna elements 101A to 101E are provided with a plurality of eaves frames 101a in which a small eaves, for example, a round bar or a tube made of a metal material is formed in a “U” shape in a vertical plane, for example, , 6 are arranged radially on the horizontal plane, and the front end side of the “U” shape is connected to the boss portion 101 g provided on the front end side of the long cylindrical body 101 f of metal material. This is a portion formed as a small rod-shaped antenna element by providing a flange portion 101y formed by connecting the base side of the “shape” to a boss portion 101h provided on the base portion side of the cylindrical body 101f.
[0022]
Secondly, the connection portions 101A1 to 101E1 are formed by the long cylindrical body 101f and the set screw 101j, and the set screw 101lj is passed through the center hole (not shown) of the long cylindrical body 101f to set the set screw 101lj. It is the place comprised so that it might fix to holding | maintenance part 103A-103E with the screw part provided in the holding | maintenance part 103A-103E side. A perspective view of a portion related to the antenna element 101A has a configuration as shown in FIG.
[0023]
When the radio direction detection device 500 is configured with a very wide frequency band of radio waves to be detected, for example, the first prior art / first described above as in the plurality of antenna devices 100 group in FIGS. (2) A plurality of arbitrary antenna devices 100 of the configurations of the prior art and the third prior art are selected and arranged in the vertical direction, and if necessary, an antenna device for a higher frequency band is provided at an upper portion thereof 100 U and the lightning rod 180 are arranged in a vertical direction, and are used by knitting them into a structure (hereinafter referred to as “eighth prior art”) in which appropriate fixtures, for example, bolts and nuts are fixed and assembled together.
[0024]
In the case of the configuration according to the eighth prior art as shown in FIGS. 18 and 19, each received signal 100a obtained from each antenna device 100 / 100U is switched and selected by the antenna switching portion 240, and any one antenna device is selected. The reception signal 100a obtained from the above is provided to the reception portion 210. Further, each antenna device 100 group is arranged in the same manner as in the seventh prior art, and the reception signals from the antenna devices 100 and 100U are respectively received separately without providing the antenna switching portion 240. A configuration (hereinafter, referred to as a ninth prior art) that is provided to the portion 210, the direction detection portion 220, and the direction display portion 240 to simultaneously detect the arrival directions of radio waves in each frequency band is also well known.
[0025]
[Problems to be solved by the invention]
In the configuration of the wireless direction detecting device 500 according to the above-described fourth conventional technology to the eighth conventional technology, the antenna device 100 according to the above-described first conventional technology to the third conventional technology used for the configuration is relatively high with little radio wave interference outdoors. Since the antenna elements 101A to 101E receive wind pressure, wind and rain pressure, etc., they continue to vibrate so fine that they are not visible because they are installed on a place, for example, on a hill or on the roof of a building.
[0026]
For this reason, when the antenna device 100 is used for a long period of time, due to fatigue due to the slight vibration, the connection portion 101A1 is used in the vicinity of the base of the antenna elements 101A to 101E, for example, an antenna element formed of a straight rod-like body. A crack in the tube portion of the antenna element close to or near the fixing portion between the holding portions 103A to 103E and the supporting arm bodies 102A to 102E, and a large external force due to wind pressure or the like is applied in that state. In Therefore, since these parts are damaged, the antenna element 10 is formed by the damaged straight rod-like body. 1 A-10 1 E or Support arm The combination of 102A to 102E and the holding portions 103A to 103E is disadvantageous in that it falls on the ground or is blown off by the wind, causing harm to buildings and passersby on the ground. In addition, the same micro vibration may loosen the screwing part which fixes between holding | maintenance part 103A-103E and support arm body 102A-102E, and the problem by the same accident may arise.
[0027]
As measures against such cases, in the case of long vertical antennas used for automobiles and ships, etc., a helical spring body is provided on the base portion of the vertical antenna, etc., to take measures to absorb vibrations. When such measures are taken, the antenna element sways due to large wind pressure, wind and rain pressure, etc., and in the case of the wireless direction detecting device 500, the phase of the radio wave received by the antenna element itself fluctuates. As a result, the apparent arrival direction D1 fluctuates, resulting in inconvenience that it cannot be put to practical use. Therefore, it is conceivable that the mechanical strength is strengthened to such an extent that it is not broken by the above-mentioned slight vibration. However, if such strengthening is performed, not only the weight of the portion increases, but also the size itself increases. Since the resistance increases, the support arm bodies 102A to 102E, the center base support body 120, and the columnar body 130 need to be strengthened, and the entire antenna device 100 becomes larger and heavier. In addition to providing the device at a low cost, the inconvenience of increasing the installation equipment cost of the antenna device 100 will occur.
For this reason, there is a problem that it is desired to provide a wireless direction detecting device using the antenna device without such inconvenience.
[0028]
[Means for Solving the Problems]
The present invention is as described above.
Direction of arrival of the above-mentioned radio wave based on a received signal obtained by receiving a predetermined radio wave by an antenna element extending vertically from the tip of the plurality of supporting arm bodies projecting radially in the horizontal plane from the center position In a wireless direction detection device for detecting
Separately from the connection part for connecting and fixing between the antenna element and the support arm, the antenna is provided by a connecting member mainly composed of a bent body made of a material that does not affect the radio waves. element And a first configuration that provides connection means for connecting the support arm and the above-described support arm body;
[0029]
In this first configuration:
The antenna element is formed of a straight rod-like body, and the connecting member is formed of the bent body formed of a string-like member and a fixing member for fixing a predetermined portion of the string-like member. The first portion of the string-like member is provided on the portion of the support arm having a smaller outer shape than the holding portion for holding the antenna element provided at the tip portion by the fixing member. A second configuration in which the second portion of the string-like member is fixed to the portion on the tip side of the connecting portion of the straight rod-like body by the fixing member;
[0030]
In the first configuration,
The antenna element is formed of a hook-shaped body, and the connecting member is formed of the bent body formed of a string-shaped member and a fixing member for fixing a predetermined portion of the string-shaped member, A portion of the support arm body having an outer shape smaller than a holding portion for holding the antenna element in which the first portion of the string-like member is provided at the tip portion, that is, a small outer shape support arm portion And the second part of the string-like member is passed through the collar part of the saddle-like body or is wound around the collar frame of the collar part, A third configuration in which the third part of the member is fixed to the small outer support arm part by the fixing member;
[0031]
Provided with an antenna element vertically projecting from the tip part of a plurality of support arm bodies projecting radially from a central position in a horizontal plane, each of the above support arms is provided to suppress horizontal movement of the support arm body. In order to fix the middle part of the arm body with the first horizontal rod-like body and to suppress the vertical movement of the support arm body, the middle part of each of the support arm bodies and the center position Is fixed to the columnar body provided on the side by an inclined second rod-shaped body, and the arrival direction of the radio wave is detected based on a received signal obtained by receiving a predetermined radio wave by the antenna element. In the wireless direction finding device
[0032]
Separately from the connection part for connecting and fixing between the antenna element and the support arm, the antenna is provided by a connecting member mainly composed of a bent body made of a material that does not affect the radio waves. element And a connecting means for connecting between the support arm body and the portion closer to the center position than the portion where the first and second hook-like bodies are fixed
A fourth configuration providing:
[0033]
In this fourth configuration:
The antenna element is formed of a straight rod-like body, and the connecting member is formed of the bent body formed of a string-like member and a fixing member for fixing a predetermined portion of the string-like member. The first portion of the string-like member is fixed by the fixing member to a portion closer to the center position than the portion where the first and second hook-like bodies of the support arm are fixed. And the 5th structure which was made to fix the 2nd part of the above-mentioned string-like member by the above-mentioned fixing member to the part near the tip side rather than the above-mentioned connection part of the above-mentioned straight rod-like body,
[0034]
In the fourth configuration,
The antenna element is formed of a hook-shaped body, and the connecting member is formed of the bent body formed of a string-shaped member and a fixing member for fixing a predetermined portion of the string-shaped member, The first part of the string-like member is closer to the center position than the part where the first and second hook-like bodies of the support arm are fixed, that is, the center side support arm part. It is fixed by the fixing member, and the second part of the string-like member is passed through the collar part of the collar-like body or wound around the collar frame of the collar part, A sixth configuration in which the third portion of the member is fixed to the central support arm portion by the fixing member;
This solves the above problem.
[0035]
DETAILED DESCRIPTION OF THE INVENTION
As an embodiment of the present invention, the present invention is applied to the radio direction detecting device 500 according to the fourth to seventh prior arts using the antenna device 100 according to the first to third prior arts. An example will be described.
[0036]
【Example】
Embodiments of the present invention will be described below with reference to FIGS. 1 to 8, parts denoted by the same reference numerals as those in FIGS. 9 to 19 are parts having the same functions as the parts having the same reference numerals described in FIGS. 9 to 19, and FIGS. The parts denoted by the same reference numerals are parts having the same functions as those denoted by the same reference numerals described in any of FIGS.
[0037]
1 to 3 and FIGS. 6 to 8, a perspective portion of a main part related to the antenna element 101A corresponding to FIGS. 11, 14 and 17, a receiving portion 210, a direction detecting portion 220, Only the direction display portion 230 is shown, but actually, the other antenna elements 101B to 101E, the connection portions 101B1 to 101E1, the holding portions 103B to 103E, the support arm bodies 102B to 102E, and the fixing holding body 104B to 104E, first hook-like bodies 105A to 105E, second hook-like bodies 106A to 106E, and fixing parts 107A to 107E, the perspective portions of the main parts are also shown in FIGS. 6 to FIG. 8, and the portions associated with the columnar body 130, the center base support 120, the mounting seat portions 102A2 to 102E2, etc. on the center position 110 side are as follows. Each arrangement of FIGS. 9 and 10, the configuration of FIG. 12 and FIG 13, FIG 15, in which are configured similarly to the configuration of FIG. 16.
[0038]
Therefore, in the following description of the configuration shown in FIGS. 1 to 3 and FIGS. 6 to 8, the reference numerals with A to E at the end of each reference sign represent one of them, and finally A This is explained by the reference numerals marked with.
[0039]
[First embodiment]
The first embodiment will be described below with reference to FIGS. The first embodiment is an embodiment in which the present invention is applied to the first prior art described above, and the configuration of the first embodiment is the configuration of the radio direction detecting apparatus 500 by the antenna device 100 of the first prior art in FIG. The following points are different.
[0040]
First, a bent body 301 made of a material that does not affect radio waves, for example, a synthetic resin system in which a plurality of high-tensile glass fibers are concentrically arranged as shown in [II cross section] in FIG. A cord-like member 301 in which the periphery of a core material 301a formed integrally with an adhesive is covered with a soft covering material 301b formed of weather-resistant vinyl chloride, for example, a product name “devegrass rope” as a main component, is provided at a required location. An antenna is provided by a connecting member 310 in combination with a fixing member 302 such as a [worm band type] in FIG. 5 for fixing the string-like member 301. element 101A and the supporting arm bodies 102A to 102E are connected to each other.
[0041]
Secondly, the antenna element 101A and the support arm body 102A are separated from the connection portion 101A1 for properly connecting and fixing the antenna element 101A and the support arm body 102A by the connection by the connection member 310. Between the holding portion 103A and the supporting arm 102A, and when any one of the antenna elements 101A is cracked and damaged near its base, This is a portion configured to perform a fall-preventing connection for preventing the detached part from falling to the ground.
[0042]
Third, the fixing of the connecting member 310 composed of the string-like member 301 and the fixing member 302 to the support arm body 102A is smaller than the outer shape of the cylindrical portion 103A1 in which the holding portion 103A is inserted and fixed to the support arm body 102A. If it is fixed to the part of the supporting arm body 102A having the outer shape, if the above-mentioned slight vibration causes a crack in the vicinity of the fixing part between the holding part 103A and the supporting arm body 102A and breaks, or the fixing part is stopped. Even when the screw is loosened and pulled out, the string-shaped member 301 fixed to the support arm 102A with the fixing member 302 can prevent the integrated portion of the antenna element 101A and the holding portion 103A from falling off by the string-shaped member 301. It is the place comprised as follows.
[0043]
Fourth, the coupling member 310 composed of the string-shaped member 301 and the fixing member 302 is fixed to the antenna element 101A composed of a straight rod-shaped body so as to be secured to the distal end side of the connection portion 101A1 of the antenna element 101A. Assuming that the connection portion 101A of the antenna element 101A is formed by a straight rod-like body by the above-described fine vibration. 1 Even when the tube portion of the straight rod-like body that is very close to the crack is broken and damaged, by fixing the string-like member 301 with the fixing member 302 on the distal end side of the damaged portion, the distal end than the damaged portion This is a portion configured so that the antenna element portion on the side can be prevented from falling off by the string-like member 301.
[0044]
Fifth, the string-like member 301 is folded back at both ends 301d as shown in [both ends annular type] in FIG. 4, and an end fixing portion 301e is attached to the end of the folded portion with a tape, for example, Reinforced polyester, that is, FRP material tape is wrapped and bonded and fixed, and the outer periphery is covered with a heat-shrinkable tube of a crosslinked poreofin resin material to form annular portions 301A and 301B at both ends of the string-like member 301 It is the place that was done.
[0045]
Sixth, a location where the fixing member 302 is constituted by a fastening band used for fastening a water supply hose such as the [Warm clamp type] in FIG. 5, for example, the trade name “hose clamp” It is. For example, the fixing member 302 is provided with a tooth profile hole 302b instead of a tooth profile of a worm gear in a strip 302a of a stainless steel plate, and at one end of the strip 302a, the shaft of the worm 302c is attached to a screwdriver. A portion that rotates at the bottom, for example, a worm mechanism portion 302e provided with a driver groove 302d is provided, and the other end side of the strip 302a is formed at the release end 302f, thereby fixing the portion of the strip 302a. After winding around the desired location, the release end 302f is inserted into a guide hole 302g provided on the lower side of the worm 302c, the worm 302c is rotated, and the portion wound by the strip 302a is tightened and fixed. .
[0046]
Sixthly, the string-like member 301 is fixed to the support arm body 102A. Specifically, first, the support arm body / string-like member is fixed to the portion where the fixing member 302 is fixed to the support arm body 102A. Protective layer for both protection and anti-slip 320 As an example, a soft vinyl chloride 320A for outdoor insulation, for example, a product name “vinyl adhesive tape” is wound, and a synthetic resin tube (not shown) whose shape shrinks by heating around the band-like body 302a of the fixing member 302. ) For example, a protective cover (not shown) for preventing damage to the string-like member 301 is formed by fitting and contracting the trade name “shrinkable tube”, and one annular portion of the string-like member 301 is formed. This is the place where the belt-like body 302a is inserted into the hole 301A and then fixed by tightening with the worm 302c.
[0047]
Seventh, the string-like member 301 is fixed to the antenna element 101A by the straight rod-like body. Specifically, first, the straight rod-like body / As the protective layer 320 for protecting the string-like member and preventing slipping, a tape 330A similar to the soft vinyl chloride tape 320A is wound, and the above-mentioned synthetic resin is wrapped around the band-like body 302a of the fixing member 302. A protective resin cover (not shown) for preventing damage to the string-like member 301 is formed by fitting and shrinking a tube made of the same synthetic resin as that of the tube. This is a place where the belt-like body 302a is inserted into the hole of the annular portion 301B and then fixed by tightening with the worm 302c.
[0048]
That is, the configuration of the first embodiment is generally as described above.
A predetermined radio wave is received by the tip portions of the plurality of support arm bodies 102A to 102E projecting radially from the center position 110 in the horizontal plane, that is, the antenna elements 101A to 101E projecting vertically from the position of the tip portion. In the wireless direction detection device 500 that detects the arrival direction D1 of the radio wave based on the received signal 100a obtained in this way,
[0049]
Above antenna element Separately from the connecting portions 101A1 to 101E1 for connecting and fixing between 101A to 101E and the support arm bodies 102A to 102E, the connecting member 310 mainly composed of a bent body made of a material that does not affect the radio waves. For example, the antenna is formed by a connecting member 310 mainly composed of a string-like member 301 made of a material in which a core material 301a of reinforced glass fiber is covered with a weathering vinyl chloride covering material 301b. element Connecting means for connecting between 101A to 101E and the supporting arm bodies 102A to 102E
This constitutes the first configuration provided with.
[0050]
In the above first configuration,
The antenna elements 101A to 101E are formed in a straight shape, and the connecting member 310 is a string-like member, for example, a reinforced glass fiber core material 301a is covered with a weather-resistant vinyl chloride covering material 301b. Formed by the above-mentioned bent body made of the member 301 and a fixing member for fixing a predetermined part of the above-mentioned string-like member 301, for example, a fixing member 302 made of a band-like body 302a fastened by a worm 302c, The antenna element 101A described above in which the first portion of the string-like member 301, for example, one annular portion 301A is provided at the position of the tip portion, that is, the tip portion of the supporting arm bodies 102A to 102E. -101E Is fixed to the portions of the support arm bodies 102A to 102E having an outer shape smaller than the holding portions 103A to 103E for holding the member by the fixing member 302, and a second portion of the string-like member 301, for example, The second configuration in which the other annular portion 301B is fixed to the distal end side portion of the antenna elements 101A to 101E by the fixing portion 302 with respect to the connecting portions 101A1 to 101E1 of the straight body. It is what constitutes.
[0051]
[Second Embodiment]
The second embodiment will be described below with reference to FIGS. Among the configurations of the second embodiment, the configuration of FIG. 2 is an embodiment in which the present invention is applied to the second prior art, and the configuration of FIG. 3 is an application of the present invention to the third prior art. This is an example.
[0052]
2 is different from the configuration of the first embodiment of FIG. 1 in that the antenna element 101A is replaced by a large bowl-shaped configuration in the [large antenna type] configuration of FIG. 14 according to the second prior art. The antenna element 101 A is changed to a body part, and a part of the middle part of the string-like member 301 of the connecting member 310 is wound around the part of each frame 101 a of the upper and lower antenna elements 101 A.
[0053]
More specifically, for example, after the string-like member 301 is wound from one side of the collar frame 101a of the upper antenna element 101A, the string-shaped member 301 is passed through the hole of the annular body 101c at the tip portion and then the other collar. Wrap it around the frame 101a and wind the lower antenna element 101A in the same manner, and put the band-like body 302a of the fixing member 302 into the annular portions 301A and 301B at both ends of the string-like member 301. Thus, the fixing member 302 is attached to the supporting arm body 102A, and is then fastened and fixed by the worm 302c.
[0054]
3 differs from the configuration of the first embodiment of FIG. 1 in that the antenna element 101A is replaced by a small rod-shaped body in the [small antenna type] configuration of FIG. 17 according to the third prior art. The antenna element 101 A is changed to a portion where the middle portion of the string-like member 301 of the connecting member 310 is formed through the flange portion 101 y of the upper and lower antenna elements 101 A.
[0055]
More specifically, the string-shaped member 301 is passed through one collar frame 101a and then the other collar frame 101a so that it passes through the collar portion 101y, and the annular portions at both ends of the string-shaped member 301 are passed through. Similar to the configuration of FIG. 2 described above, 301 and 301B are configured to pass through the belt-like body 302a of the fixing member 302 and be fixed to the supporting arm body 102A in the same manner.
[0056]
Therefore, in any of the configurations of FIGS. 2 and 3, as in the first embodiment,
First, the antenna element 101A and the support arm body 102A are separated from the connection portion 101A1 for properly connecting and fixing the antenna element 101A and the support arm body 102A by the connection by the connection member 310. As a result of the above-mentioned connection, if the micro-vibration causes a crack in the vicinity of the fixing portion between the holding portion 103A and the supporting arm body 102A and breaks, or the set screw that fixes the portion loosens and comes off. Even in this case, the string-like member 301 fixed to the support arm 102A with the fixing member 302 is configured so that the integral part of the antenna element 101A and the holding portion 103A can be prevented from falling off by the string-like member 301.
[0057]
Second, by connecting the large hook portion 10x by the string-like member 301 to the supporting arm body 102A of the antenna element 101A by winding the string-like member 301 around the hook frame 101x, the above-mentioned fine vibration is temporarily provided. Even if the fixing portion between the holding portion 103A and the supporting arm body 102A is cracked and broken due to the above, or the set screw of the connecting portion is loosened and pulled out, and the upper and lower antenna elements 101A are separated separately, the supporting arm body The string-like member 301 fixed to the 102A by the fixing member 302 is configured so that the upper and lower antenna elements 101A and the holding portion 103A can be prevented from dropping off by the string-like member 301.
[0058]
Thirdly, the connection of the antenna element 101A to the supporting arm body 102A by the small heel portion 10x by the string-like member 301 is performed by passing the string-like member 301 through the heel portion 101y, and thereby the above-mentioned fineness is assumed. Even when the fixed portion between the holding portion 103A and the supporting arm body 102A is cracked due to vibration and broken, or when the set screw of the connecting portion is loosened and the upper and lower antenna elements 101A are separated separately, the supporting arm body 102A The string-like member 301 fixed by the fixing member 302 is configured such that the integral part of the upper and lower antenna elements 101A and the holding portion 103A can be prevented from falling off by the string-like member 301.
[0059]
That is, the configuration of the second embodiment is generally the same as that of the first configuration described above, in which the antenna elements 101A to 101E are formed as hooks, and the connecting member 310 is a string member 301. And the first portion of the string-like member 301, for example, one annular portion, and the bent body and the fixing member 302 for fixing a predetermined portion of the string-like member 301. The support arm having a smaller outer shape than the holding portions 103A to 103E for holding the antenna elements 101A to 101E provided with 301A at the tip portion, that is, the tip portions of the support arm bodies 102A to 102E. It fixes to the site | part of the bodies 102A-102E, ie, a small external support arm site | part, by the said fixing member 302, The 2nd site | part of said string-like member 301, for example, string shape The middle portion of the material 301 is passed through the hook portion 101y of the hook-like body or is wrapped around the hook frame 101a of the hook portion 101x, and the third portion of the string-like member 301, for example, the other That is, the third portion is configured such that the annular portion 301B is fixed to the small outer support arm portion by the fixing member 302.
[0060]
In addition, the structure of the connection body 310 in the case of the configuration of [Large antenna type] in FIG. 2 is the same as that of the connection body 310 in the case of the structure of [small antenna type] in FIG. It goes without saying that the configuration can be obtained so as to obtain the same effect as the configuration of the [small antenna type] configuration of FIG.
[0061]
[Third embodiment]
The third embodiment will be described below with reference to FIGS. The third embodiment is an embodiment in which the way of fixing the connecting member 310 in the first embodiment of FIG. 1 is changed, and the configuration of the third embodiment is different from the configuration of the first embodiment. The portion where the annular portions 301 and 301B at both ends of the string-like member 301 of the member 310 are fixed by the fixing portion 302 is changed to a position farther than in the case of the first embodiment, and becomes longer by the distance. This is a part where the middle part of the cord-like member 301 is fixed by a fixing member 303 such as the [reverse claw bandage type] in FIG.
[0062]
Specifically, a portion where one annular portion 301A of the string-like body 301 is fixed to the supporting arm body 102A by the fixing member 302 is a stay mounting portion of the supporting arm body 102A, that is, the fixing holding body 104A. By changing to a position closer to the center position 110 side than the position where the first bowl-shaped body 105A and the second bowl-shaped body 106A are provided, the support arm body having higher strength than the case of the first embodiment. If it is fixed to the portion 102A and the fixing portion between the holding portion 103A and the supporting arm body 102A is cracked and damaged by the above-described fine vibration, or the set screw of the connecting portion is loosened and pulled out However, the string-like member 301 fixed to the support arm 102A with the fixing member 302 prevents the integral part of the antenna element 101A and the holding portion 103A from falling off by the string-like member 301. It is configured so as kill.
[0063]
In addition, by changing the portion for fixing the fixing member 302 to the straight member of the antenna element 101A to a portion closer to the tip side where the straight member is further thinner than in the first embodiment, Temporarily, the connecting portion 101A of the antenna element 101A is formed by a straight rod-like body due to the fine vibration described above. 1 Even when a portion of the tubular body that is very close to the surface is cracked and damaged, the string-like member 301 is fixed to the distal end side by the fixing member 302 further than the damaged portion. The element portion can be prevented from falling off by the string-like member 301.
[0064]
Further, the middle part of the string-like member 301 is fixed by the fixing member 303 at an appropriate interval so that the middle part of the string-like member 301 is not hung up by wind pressure and wind / rain pressure and causes fatigue damage. ing.
[0065]
The fixing member 303 is a band-like body 303a formed by mixing a carbon powder into a polyamide-based weather resistant synthetic resin material, for example, a trade name “66 nylon resin”, as shown in FIG. A hook portion 303b having a sawtooth cross section is provided on the outer surface side of the belt, and a check portion 303e having a guide hole 303c and a check claw 303d into which the strip body 303a can enter is provided on one end side of the strip 303a. By forming the other end side of 303a at the release end 303f, after winding the portion of the band 303a around the place to be fixed, the release end 303f is passed through the guide hole 303c, and the release end 302f is strongly pulled, When the portion wound by the belt-like body 303a is tightened, the belt-like body 303a can be fixed by the check claw 303d at that position. Is the name of "tie-wraps".
[0066]
That is, the configuration of the third embodiment is generally as described above.
A plurality of support arm bodies 102A to 102E projecting radially from the center position 110 in the horizontal plane, that is, antenna elements 101A to 101E projecting vertically from the position of the tip section are provided. In order to suppress the horizontal movement of 102A to 102E, the intermediate portions of each of the above supporting arm bodies 102A to 102E are fixed by horizontal first hook-like bodies 105A to 105E, and the above supporting arm bodies 102A to 102A are fixed. In order to suppress the movement of the vertical direction of 102E, between the intermediate part of each of the support arm bodies 102A to 102E and the columnar body 130 provided at the central position 110, the second hook-shaped bodies 106A to 106A. 106E and the antenna element 10 1 A-10 1 In the wireless direction detection device 500 for detecting the arrival direction D1 of the above-mentioned radio wave based on a reception signal obtained by receiving a predetermined radio wave by E,
[0067]
Above antenna element Separately from the connecting portions 101A1 to 101E1 for connecting and fixing between 101A to 101E and the support arm bodies 102A to 102E, the connecting member 310 mainly composed of a bent body made of a material that does not affect the radio waves. For example, the above-mentioned antenna is provided by a connecting member 310 mainly composed of a string-like member 301 made of a material in which a core material 301a of reinforced glass fiber is covered with a weather-resistant vinyl chloride covering material 301b. element 101A to 101E and a portion closer to the central position 110 than the portion to which the first and second rod-like bodies 105A to 105E and 106A to 106E of the support arm 102A to 102E are fixed. Connecting means to connect
That is, the fourth configuration described above is provided.
[0068]
Furthermore, in the above fourth configuration,
The antenna elements 101A to 101E are formed of a straight rod-like body, and the connecting member 310 is fixed for fixing the bent body formed of the string-like member 301 and a predetermined portion of the string-like member 301. The first portion of the string-like member 301, for example, one annular portion 301A is formed by the member 302 and the first and second hook-like bodies 105A to 105A to 102A to 102E. 105E and 106A to 106E are fixed to a portion closer to the central position 110 than the portion where the fixed portion is fixed by the fixing member 302, and the second portion of the string-like member 301, for example, the other annular portion 301B is fixed. The fifth configuration is configured such that the fixing member 302 is fixed to a portion of the straight rod-like body on the tip side of the connection portions 101A1 to 101E1. Rukoto made.
[0069]
[Fourth embodiment]
The fourth embodiment will be described below with reference to FIGS. The fourth embodiment is an embodiment in which the way of fixing the connecting member 310 in the second embodiment of FIG. 2 is changed, and the configuration of the fourth embodiment is different from the configuration of the second embodiment. Only the portion for fixing the member 310 to the supporting arm body 102A is the same as the portion in the third embodiment of FIG.
[0070]
Specifically, a portion where one annular portion 301A of the string-like body 301 is fixed to the supporting arm body 102A by the fixing member 302 is a stay mounting portion of the supporting arm body 102A, that is, the fixing holding body 104A. By changing to a position closer to the center position 110 side than the position where the first bowl-shaped body 105A and the second bowl-shaped body 106A are provided, the support arm body having higher strength than the case of the second embodiment. If it is fixed to the portion of 102A, if the above-mentioned fine vibration causes a crack in the vicinity of the fixing portion between the holding portion 103A and the supporting arm body 102A and breaks, or the set screw of the fixing portion loosens and comes off. Even if the antenna element 101A and the holding portion 103A are integrated by the string-like member 301 by the string-like member 301 fixed to the supporting arm 102A by the fixing member 302. It is configured so as to be able to prevent falling off Te.
[0071]
Although not shown, the connection of the connecting member 310 to the antenna element 101A, that is, the method of connecting the string-like member 301, is similar to the case of the configuration of FIG. 3 in the third embodiment described above. It is also included in the fourth embodiment that the configuration is changed to a configuration that only passes through the inside.
[0072]
Therefore, according to the configuration of the fourth embodiment, the configuration for connecting the connecting member 310 to the supporting arm body 102A, that is, the configuration for fixing the string-like member 301 to the supporting arm body 102A by the fixing member 302 is as described above. The same dropout prevention as that of the third embodiment can be performed.
[0073]
Further, the portion for connecting the connecting member 310 to the antenna element 101A, that is, the string-like body 301 is passed through the collar portion 101x of the rod-like body of the antenna element 101A, or the string-like body 301 is passed through the collar frame of the antenna element 101A. The portion to which the wire 101a is wound can be prevented from coming off in the same portion of the configuration of FIG. 2 of the second embodiment and the same drop prevention as the same portion of the configuration of FIG. 3 of the second embodiment.
[0074]
That is, the configuration of the fourth embodiment is generally as follows.
In the fourth configuration,
The antenna elements 101A to 101E are formed as hooks, and the connecting member 310 is fixed to fix the bent body formed of the string-like member 301 and a predetermined portion of the string-like member 301. The first portion of the string-like member 301, for example, one annular portion 301A is formed by the member 302 and the first and second hook-like members 105A to 105E of the support arm 102A102E. 106A to 106E are fixed to the part closer to the center position 110 than the part to which the parts 106A to 106E are fixed, that is, the center side support arm part by the fixing member 302, and the second part of the string-like member 302, for example, In addition, the middle portion of the string-like member 302 is passed through the hook-like body, that is, the hook-like portion 101x of the hook-like body of the antenna elements 101A to 101E, or the hook portion 101 described above. The third portion of the string-like member 301, for example, the other annular portion 301B is fixed to the central support arm portion by the fixing member 302. 6 is configured.
[0075]
[Modification]
The present invention includes the following modifications.
(1) The string-like member 301 in the configuration of the first embodiment of FIG. 1 or the third embodiment of FIG. 6 is eliminated from the portion corresponding to the annular portion 301B as shown in FIG. The terminal 301d of the string-like member 301 is changed to a structure in which the terminal portion 301d is reinforced in the same manner as the end fixing portion 301e, and the portions of the terminals 301d and 301e are changed as shown in [Terminal fixing type] in FIG. , It is configured to be positioned at a location through which the fixing member 302 is passed.
[0076]
(2) In the configuration of the first embodiment shown in FIG. 1 or the third embodiment shown in FIG. 6, the string members 301 respectively arranged on the upper and lower antenna elements 101A to 101E are arranged as one continuous common string. The member 301 is changed, and the second part of the string-like member 301 is changed to the middle part 301Y of the string-like member 301 as shown in [Common string-like member type] in FIG. The antenna elements 101A to 101E are modified so as to be fixed to the straight body.
[0077]
(3) In the configuration of the first embodiment of FIG. 1 or the third embodiment of FIG. 6, the upper and lower two string-like members 301 respectively disposed on the upper and lower antenna elements 101A to 101E are shown in FIG. In the middle part of one string-like member 301, the annular parts 301C and 301D similar to the annular parts 301A and 301B are changed to a string-like member 301X provided at a distance from each other. The fixing member 302 on the antenna elements 101A to 101E side is changed to be fixed through the annular portions 301C and 301D.
[0078]
(4) In the configurations of the first embodiment to the fourth embodiment and the above (1) to (3), the first portion to the third portion of the string-like member 301 fixed by the fixing members 302 are appropriately set. For example, a part to be fixed to the support arm bodies 102A to 102E is changed to a middle part of the string-like member 301 or the like.
[0079]
(5) The antenna device 100 in the first to fourth embodiments is similar to the antenna device 100 in the group of a plurality of antenna devices 100 according to the eighth prior art having the [multi-stage antenna type] configuration shown in FIGS. While changing to a [multi-stage antenna type] configuration having a group, an antenna switching portion 240 similar to the antenna switching portion 240 in the seventh prior art is provided on the input side of the receiving portion 210.
[0080]
(6) The antenna device 100 in the first to fourth embodiments is similar to the antenna device 100 in the group of a plurality of antenna devices 100 according to the eighth prior art having the [multi-stage antenna type] configuration shown in FIGS. In addition to changing to a [multi-stage antenna type] configuration having a group, each receiving portion 210 obtained from each antenna element 101A to 101E of each antenna device 100 is changed to a separate receiving portion 210 / direction as in the ninth prior art. The detection part 220 and the direction display part 130 are provided, and at the same time, the arrival direction D1 of the radio wave of each frequency band is detected.
[0081]
(7) In the configuration of FIG. 3 of the second embodiment, the position of the fixing member 301 fixed to the support arm bodies 102A to 102E is changed to a position close to the holding portions 103A to 103E, for example, a position indicated by an arrow 301R. Thus, the slack of the string-like member 301 is reduced.
(8) In the configuration of FIG. 3 of the second embodiment, the middle part of the string-like member 301 along the supporting arm bodies 102A to 102E, for example, the position indicated by the arrow 301R is fixed by the fixing member 303, thereby The slack of the member 301 is eliminated.
[0082]
(9) The bent body of the connecting member 310 formed of the string-like member 301 may be another member, for example, a string-like body formed of only the core material 301 without the covering material 301b, or a polyester resin containing glass fiber or The structure is changed to a chain formed by a chain formed of a synthetic resin material containing reinforcing fibers such as an epoxy resin.
[0083]
(10) The shape of the collar portions 101x and 101y in the configuration of the [large cage antenna type] and [small cage antenna type] may be other shapes, for example, the collar frame 101a may be formed of a "U-shaped" rod-like body or tubular body. Alternatively, the antenna device 100 may be applied to the antenna device 100 that has been changed to a heel portion formed by a coarse mesh.
[0084]
(11) In the configuration of FIG. 3 of the second embodiment, the annular portions 301A and 301B of the string-like member 301 fixed to the supporting arm bodies 102A to 102E are arranged as shown in [Supplementary winding type] of FIG. After passing the string-like member 301Z similar to the string-like member 301, the annular portions 301E and 301F at both ends thereof are attached to the mounting seat portion 102A2 by the fixing member 302X and the protective layer 340 similar to the fixing member 302 and the protective layer 320. To be fixed to any one of ˜102E2.
(12) In the configuration of FIG. 3 of the second embodiment, the plurality of string-like members 301 that are separately fixed to the supporting arm bodies 102A to 102E are all changed to one continuous string-like member 301. The annular portions 301A and 301B of one string-like member 301 are fixed to any one support arm body, for example, the support arm body 102A in the same manner as in FIG. It is configured to be modified so as to be fixed through the fixing member 302 and the protective layer 320 disposed on the other supporting arm body while passing through all the flange portions 101y.
[0085]
【The invention's effect】
According to the present invention, as described above, the connection between each antenna element and each support arm is fixed. Regular Separately from the connection part, because it is connected by a connecting member mainly composed of a bent body of a material that does not affect radio waves, the vicinity of the base of the antenna element is cracked by slight vibration due to wind pressure and wind and rain pressure, Antenna element Even if the fixing part between the holding part that holds the arm and the support arm is damaged or the set screw of the fixing part is loosened and pulled out, the antenna element / holding part is prevented from falling off by the connecting member. There are features such as being able to provide a radio direction detection device that can prevent accidents that cause harm to humans and animals passing underneath, and that does not affect the direction detection of radio waves.
[Brief description of the drawings]
In the drawings, FIGS. 1 to 8 show an embodiment of the present invention, and FIGS. 9 to 19 show the prior art, and the contents of each figure are as follows.
FIG. 1 is an enlarged perspective view of a main part configuration.
FIG. 2 is an enlarged perspective view of a main part configuration.
FIG. 3 is an enlarged perspective view of a main part configuration.
FIG. 4 is an enlarged perspective view of a main part disassembly element.
FIG. 5 is an enlarged perspective view of an essential element disassembly element.
FIG. 6 is an enlarged perspective view of the main part configuration.
FIG. 7 is an enlarged perspective view of a main part configuration.
FIG. 8 is an enlarged perspective view of a main part configuration.
FIG. 9 is an overall configuration front view.
FIG. 10 is an overall configuration plan view.
FIG. 11 is an enlarged perspective view of a main part configuration.
FIG. 12 is an overall configuration front view.
FIG. 13 is an overall configuration plan view.
FIG. 14 is an enlarged perspective view of a main part configuration.
FIG. 15 is an overall configuration front view.
FIG. 16 is an overall configuration plan view.
FIG. 17 is an enlarged perspective view of the main part configuration.
FIG. 18 is a front view of the entire assembly configuration.
FIG. 19 is a front view of the entire assembly configuration.
[Explanation of symbols]
100 Antenna device
100X antenna device
100U antenna device
100a received signal
101A to 101E Antenna element
101A1-101E1 connection part
101a frame
101b Corner part
101c toroid
101d cylinder
101e Set screw
101f cylinder
101g Boss part
101h Boss part
101j Set screw
101x heel part
101y heel part
102A to 102E support arm
102A1 to 102E1 Tip part
102A2 to 102E2 Mounting seat
102A3-102E3 intermediate part
103A-103E Holding part
104A to 104E Fixing holder
105A to 105E First rod-shaped body
106A-106E 2nd rod-shaped body
107A to 107E Fixing holder
110 Center position
120 Center base support
130 Columnar body
130X columnar body
131 Distribution box
180 Lightning rod
210 Reception part
210a Amplified signal
220 Direction detection part
220a Direction signal
230 Direction display part
240 Antenna switching part
301 String member (bent body)
301A Annular part
301B Annular part
301C Annular part
301D Annular part
301a Heartwood
301b Coating material
301d Terminal part
301e End fixing part
301R Arrow location
301X String member
301Y halfway part
301Z String member
302 Fixing member
302a band
302b Tooth profile hole
302c worm
302d Driver groove
302e Worm mechanism part
302f Release end
302g Guide hole
303 Fixing member
303a Band
303b hooking part
303c Guide hole
303d Check claw
303e Check part
303f Release end
310 connecting member
320 Protective layer
320A PVC tape
330 Protective layer
330A Vinyl chloride tape
500 Wireless direction finding device
D0 Reference direction
D1 Direction of arrival
X1 Top side
X2 Bottom side
θ Angle value

Claims

The direction of arrival of the radio wave is determined based on a received signal obtained by receiving a predetermined radio wave from an antenna element that projects vertically from the tip of the plurality of support arm bodies that radiate in the horizontal plane from the center position. A wireless direction finding device for detecting,
The antenna element and the support arm are separated from a connection portion for connecting and fixing the antenna element and the support arm by a connecting member mainly composed of a bent body made of a material that does not affect the radio wave. A wireless direction detecting device comprising a connecting means for connecting the two.

The antenna element is formed of a straight body, and the connecting member is formed of the bent body formed of a string-like member and a fixing member for fixing a predetermined portion of the string-like member. The first part of the member is fixed to the part of the support arm having a smaller outer shape than the holding part for holding the antenna element provided at the tip part by the fixing member, and the first part of the string-like member is fixed. The radio direction detecting device according to claim 1, wherein the two parts are fixed to the part closer to the distal end than the connection part of the straight rod-like body by the fixing member.

The antenna element is formed of a hook-shaped body, and the connecting member is formed of the bent body formed of a string-shaped member and a fixing member for fixing a predetermined portion of the string-shaped member, and the string-shaped member The first part of the supporting arm body has a smaller outer shape than the holding part for holding the antenna element provided at the tip part (hereinafter referred to as a small outer supporting arm part) by the fixing member. Fix and pass the second part of the string-like member through the collar part of the saddle-like body, or wrap around the collar part of the collar part, and the third part of the string-like member is the small outline The wireless direction detecting device according to claim 1, wherein the wireless direction detecting device is fixed to a supporting arm portion by the fixing member.

In order to suppress the horizontal movement of the support arm body, each support arm body is provided with an antenna element projecting vertically from the tip portion of the plurality of support arm bodies projecting radially from the center position in a horizontal plane. A columnar body provided in the middle position of each of the support arm bodies and the center position in order to prevent the support arm bodies from moving in the vertical direction by fixing the middle part of the support arm with a horizontal first rod-like body. Is a wireless direction detection device that detects an arrival direction of the radio wave based on a received signal obtained by receiving a predetermined radio wave by the antenna element. And
The separately from the connection part for the connecting and fixing between the antenna element and the support arms, and the antenna element by a connecting member consisting mainly of bending of a material which does not affect the radio wave, the support arm A radio direction detecting device comprising a connecting means for connecting a portion closer to the center position than a portion where the first and second rod-like bodies of the body are fixed.

The antenna element is formed of a straight body, and the connecting member is formed of the bent body formed of a string-like member and a fixing member for fixing a predetermined portion of the string-like member. The first part of the member is fixed by the fixing member to a part closer to the center position than the part where the first and second hook-like bodies of the support arm are fixed, and the second part of the string-like member The wireless direction detecting device according to claim 4, wherein the portion is fixed to a portion on the tip side of the connecting portion of the straight body by the fixing member.

The antenna element is formed of a hook-shaped body, and the connecting member is formed of the bent body formed of a string-shaped member and a fixing member for fixing a predetermined portion of the string-shaped member, and the string-shaped member The first part of the support arm is fixed to the part closer to the central position than the part where the first and second rod-like bodies of the support arm are fixed (hereinafter referred to as the center side support arm part) by the fixing member. Then, the second part of the string-like member is passed through the collar part of the saddle-like body, or is wound around the collar frame of the collar part, and the third part of the string-like member is supported on the center side The radio direction detection device according to claim 4, wherein the radio direction detection device is fixed to an arm part by the fixing member.