JP2005057169A - Radio wave absorption panel - Google Patents

Radio wave absorption panel Download PDF

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JP2005057169A
JP2005057169A JP2003288671A JP2003288671A JP2005057169A JP 2005057169 A JP2005057169 A JP 2005057169A JP 2003288671 A JP2003288671 A JP 2003288671A JP 2003288671 A JP2003288671 A JP 2003288671A JP 2005057169 A JP2005057169 A JP 2005057169A
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radio wave
wave absorption
absorption panel
strength
holding member
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JP4301893B2 (en
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Kenichi Kimura
謙一 木村
Kensuke Ikenaga
健輔 池永
Fumio Inoue
二三男 井上
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Sekisui Jushi Corp
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Sekisui Jushi Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a radio wave absorption panel in which, even when a radio wave arrival plane of a ceiling plane, etc. is installed downward, an invasion of rainwater or dust into the interior of a panel is prevented and a radio wave absorption performance can be maintained. <P>SOLUTION: Protection members 2 of which one side is released respectively are fitted into a strength retaining member 1, whereby the released one of the protection member 2 which is installed upward is coated with the strength retaining member 1, and the invasion of rainwater or dust due to gravity can be prevented. Further, the strength retaining member 1 is composed of metal to increase its strength, and also the strength retaining member 1 functions also as a radio wave reflector, thereby reliably shielding an unwanted radio wave by a radio wave absorption panel 10. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

本発明は、屋外、特に自動料金収受システム等の通信領域が設けられた道路周辺に取り付けられ、不要な電波を吸収して通信品質の維持を図るために設置される電波吸収パネルに関するものである。   The present invention relates to a radio wave absorption panel that is installed outdoors, particularly around roads provided with a communication area such as an automatic toll collection system, and is installed to absorb unnecessary radio waves and maintain communication quality. .

従来、道路周辺に設置され、電波吸収体を備えることで不要な電波を吸収できる電波吸収パネルについては種々の発明がなされてきており、例えば特許文献１に、電波吸収層と、吸音層と、吸音層と反対側に設けられる電波反射体とを備え、吸音層上に保護部材を備えた電波吸収パネルが開示されている。   Conventionally, various inventions have been made for radio wave absorption panels that are installed around roads and can absorb unnecessary radio waves by including a radio wave absorber. For example, Patent Document 1 discloses a radio wave absorption layer, a sound absorption layer, There is disclosed a radio wave absorption panel including a radio wave reflector provided on the side opposite to the sound absorption layer and including a protective member on the sound absorption layer.

特開２００３−１１９７２６号公報JP 2003-119726 A

しかしながら、特許文献１に記載の如き電波吸収パネルを電波到来面が下方となるように設置すると、背面ケースと保護部材との間から雨水や塵埃等が侵入しやすく、内包された電波吸収体が劣化して電波吸収性能に悪影響を及ぼす恐れがある。   However, when the radio wave absorption panel as described in Patent Document 1 is installed so that the radio wave arrival surface is downward, rainwater, dust, etc. easily enter between the back case and the protective member, and the contained radio wave absorber is Deteriorating and may adversely affect radio wave absorption performance.

本発明は上記の如き課題に鑑みてなされたものであり、天井面等の電波到来面が下方となるように設置した場合でも、パネル内部への雨水や塵埃等の侵入を防止し、電波吸収性能を維持できる電波吸収パネルを提供せんとするものである。   The present invention has been made in view of the above problems, and even when installed such that a radio wave arrival surface such as a ceiling surface is downward, it prevents rain water and dust from entering the panel, and absorbs radio waves. We intend to provide a radio wave absorption panel that can maintain its performance.

上記目的を達成するため、本発明は以下のような構成としている。すなわち、本発明に係わる電波吸収パネルは、一方が開放された箱状体を二体嵌め合わせて中空部を形成し、該中空部に電波吸収体が収納されたパネルであって、箱状体の一方は金属からなることで強度を確保する強度保持部材となされ、他方は誘電体からなることで電波吸収体を保護する保護部材となされ、前記強度保持部材に前記保護部材が嵌入されて、前記保護部材の底面側が電波到来面となされていることを特徴とするものである。   In order to achieve the above object, the present invention is configured as follows. That is, the radio wave absorption panel according to the present invention is a panel in which two hollow box-like bodies are fitted together to form a hollow part, and the radio wave absorber is accommodated in the hollow part. One of these is made of a metal and is a strength holding member that secures strength, and the other is made of a dielectric and is a protective member that protects the radio wave absorber, and the protective member is inserted into the strength holding member, The bottom surface side of the protective member is a radio wave arrival surface.

また前記強度保持部材は、パネル取付用の取付溝を有する取付部材が固着されていることを特徴とするものである。   The strength holding member is characterized in that an attachment member having an attachment groove for attaching the panel is fixed.

また前記強度保持部材は、箱状体の周縁を形成する側壁の高さが、前記保護部材の周縁を形成する側壁の高さの略半分となされていることを特徴とするものである。   The strength holding member is characterized in that the height of the side wall forming the peripheral edge of the box-like body is substantially half the height of the side wall forming the peripheral edge of the protective member.

請求項１に記載の本発明に係わる電波吸収パネルによれば、それぞれ一方が開放された保護部材が強度保持部材に嵌入されていることで、設置時に上向きになる保護部材の開放された一方を強度保持部材により覆い、重力による雨水や塵埃等の侵入を防ぐことができる。また強度保持部材は金属からなることで、強度を高めることができると共に、電波反射体としても機能し、電波吸収パネルによる不要な電波の遮へいをより確実なものとできる。   According to the radio wave absorption panel according to the present invention as set forth in claim 1, the protection member that is opened on one side is fitted into the strength holding member, so that the opened one of the protection members facing upward at the time of installation is Covering with a strength holding member, it is possible to prevent intrusion of rainwater, dust, etc. due to gravity. Further, since the strength holding member is made of metal, the strength can be increased, and the strength holding member also functions as a radio wave reflector so that unnecessary radio waves can be shielded more reliably by the radio wave absorption panel.

また請求項２の発明によれば、予め電波吸収パネルに取付部材を固着しておくことで、設置における部材の取り付け等の手間を軽減することができ好ましい。   According to the invention of claim 2, it is preferable that the attachment member is fixed to the radio wave absorption panel in advance, so that troubles such as attachment of the member in installation can be reduced.

また請求項３の発明によれば、強度保持部材に保護部材を嵌入した際に、金属である強度保持部材の側壁の端縁が電波到来側に露出することがなく、また強度保持部材において強度保持及び保護部材の取り付け代を確保でき好ましい。   According to the invention of claim 3, when the protective member is inserted into the strength holding member, the edge of the side wall of the strength holding member, which is a metal, is not exposed to the radio wave arrival side, and the strength holding member It is preferable because the mounting allowance for holding and protecting members can be secured.

本発明に係わる最良の実施の形態について、図面に基づき以下に具体的に説明する。
始めに、図１を参照して、本発明の実施の形態に係る自動料金収受システム用電波吸収パネル（以下、単に電波吸収パネルと言う。）および自動料金収受システムにおける不要電波抑制方法（以下、単に不要電波抑制方法と言う。）の概要について説明する。本実施の形態では、自動料金収受システムにおける路上側アンテナと車載器側アンテナとの双方向通信において発生する不要な電波を抑制するための電波吸収体を設ける。 BEST MODE FOR CARRYING OUT THE INVENTION The best embodiment according to the present invention will be specifically described below with reference to the drawings.
First, referring to FIG. 1, a radio wave absorption panel (hereinafter simply referred to as a radio wave absorption panel) for an automatic fee collection system and an unnecessary radio wave suppression method (hereinafter referred to as a radio wave absorption panel) according to an embodiment of the present invention. An outline of simply the unnecessary radio wave suppression method will be described. In the present embodiment, a radio wave absorber is provided for suppressing unnecessary radio waves generated in bidirectional communication between the roadside antenna and the vehicle-mounted device-side antenna in the automatic toll collection system.

図１は、本実施の形態が適用される料金所の周辺の構成の一例を示す説明図である。この例では、料金所Ｐ手前にはゲートＧが設けられ、ゲートＧの上部に、自動料金収受システムにおける路上側アンテナＧ１が設けられている。自動料金収受システムでは、路上側アンテナＧ１と、車Ｃに搭載した車載器Ｅにおける車載器側アンテナとの間で、通行料金に関する情報を無線で交信することによって、自動的に通行料金の収受を行うようになっている。路上側アンテナＧ１は、料金所Ｐが設置されている道路Ｒの方向に向けて電波を放射するようになっている。 FIG. 1 is an explanatory diagram showing an example of a configuration around a toll gate to which the present embodiment is applied. In this example, a gate G is provided in front of the toll gate P, and a roadside antenna G1 in the automatic toll collection system is provided above the gate G. The automatic toll collection system automatically collects tolls by wirelessly communicating information about tolls between the roadside antenna G1 and the onboard unit antenna in the onboard unit E mounted in the car C. To do. The roadside antenna G1 radiates radio waves in the direction of the road R where the toll booth P is installed.

また、料金所Ｐの上方には、道路Ｒと立体交差する高架道路Ｋが配置されている。このような状況において、本実施の形態に係る電波吸収パネルを用いない場合には、路上側アンテナＧ１より放射された電波が、下側の道路Ｒの上面と、高架道路７の下面Ｋ１との間で多重反射する可能性がある。その結果、車載器５における車載器側アンテナが受信可能なしきい値以上の電波の到達範囲が目標とする範囲よりも広がり、その到達範囲内に、同一レーンや隣接する複数のレーンを走行中の複数の車が入り、システムが誤動作する可能性がある。更には車両Ｃの屋根等の金属部分に当たって反射された電波が、ゲートＧの下面や、料金所Ｐの屋根Ｐ１により反射される恐れもある。 In addition, an elevated road K that intersects with the road R is arranged above the toll gate P. In such a situation, when the radio wave absorption panel according to the present embodiment is not used, the radio wave radiated from the roadside antenna G1 is generated between the upper surface of the lower road R and the lower surface K1 of the elevated road 7. There is a possibility of multiple reflections between them. As a result, the reachable range of radio waves above the threshold that can be received by the onboard equipment side antenna in the onboard equipment 5 is wider than the target range, and the same lane or a plurality of adjacent lanes are traveling within the reachable range. Multiple cars may enter and the system may malfunction. Furthermore, there is a possibility that the radio wave reflected by hitting a metal part such as the roof of the vehicle C is reflected by the lower surface of the gate G or the roof P1 of the toll gate P.

これを防止するために、本実施の形態に係る不要電波抑制方法では、路上側アンテナＧ１から放射される電波の不要な進行方向の先の周辺構造物である高架道路Ｋの下面Ｋ１、ゲートＧの下面、及び料金所Ｐの屋根Ｐ１に、本実施の形態に係る電波吸収パネル１０を設けている。高架道路Ｋの下面Ｋ１については、電波吸収パネル１０は、路上側アンテナＧ１から放射され、下方の道路Ｒで反射した電波の進行方向の先の位置に取り付けられている。 In order to prevent this, in the unnecessary radio wave suppression method according to the present embodiment, the lower surface K1 of the elevated road K, which is a peripheral structure ahead of the unnecessary traveling direction of the radio wave radiated from the roadside antenna G1, the gate G The radio wave absorption panel 10 according to the present embodiment is provided on the lower surface of the toll plate and the roof P1 of the toll gate P. Regarding the lower surface K1 of the elevated road K, the radio wave absorption panel 10 is attached to a position ahead of the traveling direction of the radio wave radiated from the roadside antenna G1 and reflected by the road R below.

図２は、電波吸収パネル１０の作製を示す説明図である。上方が開放された箱状体で、誘電体であるＡＢＳ樹脂からなる保護部材２、及びアルミ板の曲げ加工により下方が開放された箱状体となされた強度保持部材１が嵌め合わされて形成された中空部に、発泡ポリエチレンにカーボンブラックが配合された電波吸収体３が収納され、強度保持部材１の側壁内側間の幅Ｗ１が保護部材２の側壁外側間の幅Ｗ２より僅かに大きくされることで、保護部材２は強度保持部材１に嵌入される。また強度保持部材１の上面には、アルミニウム押出形材からなり、電波吸収パネル１０の取り付けに係わるボルトの頭部又はナットが摺動可能に挿入される取付溝４１を備えた取付部材４が、スポット溶接や両面テープ等により固着されている。電波吸収体３の厚みＬ３は、箱状体の保護部材２の深さＬ２と略同一となされているが、箱状体の強度保持部材１の高さＬ１は、深さＬ２及び厚みＬ３より小さいものとなされている。電波吸収体３が保護部材２に収納され、保護部材２が強度保持部材１に嵌入された状態で、強度保持部材１及び保護部材２それぞれの側壁に穿設された貫通孔１１及び２１にリベット５が挿通されてリベット止めがなされて電波吸収パネル１０が形成される。   FIG. 2 is an explanatory view showing the production of the radio wave absorption panel 10. A box-shaped body whose upper part is opened, and a protective member 2 made of ABS resin as a dielectric, and a strength holding member 1 which is a box-shaped body whose lower part is opened by bending an aluminum plate are fitted together. In the hollow portion, the radio wave absorber 3 in which carbon black is blended with foamed polyethylene is housed, and the width W1 between the inner side walls of the strength holding member 1 is slightly larger than the width W2 between the outer side walls of the protective member 2. Thus, the protection member 2 is fitted into the strength holding member 1. Further, on the upper surface of the strength holding member 1, an attachment member 4 made of an aluminum extruded shape member and provided with an attachment groove 41 into which a bolt head or nut related to the attachment of the radio wave absorption panel 10 is slidably inserted, It is fixed by spot welding or double-sided tape. The thickness L3 of the radio wave absorber 3 is substantially the same as the depth L2 of the protective member 2 of the box-like body, but the height L1 of the strength holding member 1 of the box-like body is greater than the depth L2 and the thickness L3. It is made small. The radio wave absorber 3 is housed in the protection member 2 and the protection member 2 is fitted into the strength holding member 1 and rivets are inserted into the through holes 11 and 21 formed in the side walls of the strength holding member 1 and the protection member 2. 5 is inserted and riveted, and the radio wave absorption panel 10 is formed.

図３は、電波吸収パネル１０の断面図である。保護部材２の底面側が電波到来面となされ、到来する不要電波Ｄ１は、誘電体である保護部材２を透過して電波吸収体３に到達し、電波吸収体３により減衰される。ここで強度保持部材１がアルミ板により形成されていることで、下方から到来する電波Ｄ１は上方に透過することなく反射され、上方への電波の遮へいをより確実なものとできると共に、電波反射体である強度保持部材１により不要電波Ｄ１が反射されて反射波Ｄ２となされ、更に電波吸収体３を通過することで電波吸収パネル１０の下面から入射された不要電波Ｄ１は極めて効果的に減衰される。   FIG. 3 is a cross-sectional view of the radio wave absorption panel 10. The bottom surface side of the protective member 2 is a radio wave arrival surface, and the incoming unnecessary radio wave D1 passes through the protective member 2 that is a dielectric, reaches the radio wave absorber 3, and is attenuated by the radio wave absorber 3. Here, since the strength holding member 1 is formed of an aluminum plate, the radio wave D1 arriving from below is reflected without being transmitted upward, so that the radio wave can be more reliably shielded upward and reflected. The unnecessary radio wave D1 is reflected by the strength holding member 1 which is a body to be reflected wave D2, and further passes through the radio wave absorber 3, so that the unnecessary radio wave D1 incident from the lower surface of the radio wave absorption panel 10 is attenuated very effectively. Is done.

また上述の如く、電波吸収体３の厚みＬ３は保護部材２の深さＬ２と略同一であり、中空部の空間を最大限に利用していると共に、保護部材２の側壁の先端が強度保持部材１の底面と突き合わせるようになされている。また強度保持部材１の側壁の高さＬ１は保護部材２の側壁の高さの略半分となされていることで、リベット５止めの取り付け代を確保でき、強度保持部材１の側壁により保護部材２の側壁を押さえ込んで、剛性の低い保護部材２を保持でき、更には強度保持部材１の側壁の先端１２は保護部材２及び電波吸収体３の下面より下方にくることがなく、側壁の先端１２からの反射電波による新たな電波障害の発生を防止することができる。   Further, as described above, the thickness L3 of the radio wave absorber 3 is substantially the same as the depth L2 of the protection member 2, and the space of the hollow portion is utilized to the maximum, and the strength of the front end of the side wall of the protection member 2 is maintained. It is made to abut against the bottom surface of the member 1. Further, the height L1 of the side wall of the strength holding member 1 is substantially half of the height of the side wall of the protective member 2, so that the mounting allowance for fixing the rivet 5 can be secured, and the protective member 2 is secured by the side wall of the strength holding member 1. The protective member 2 having low rigidity can be held by pressing the side wall of the protective member 2, and the distal end 12 of the side wall of the strength retaining member 1 does not come below the lower surface of the protective member 2 and the radio wave absorber 3. It is possible to prevent the occurrence of new radio interference due to the reflected radio waves from the.

また強度保持部材１の上面に固着された取付部材４は、取付溝４１を形成する断面Ｌ字状の側壁が縦リブの如く機能することで、長期の使用や予期せぬ上方からの荷重がかかった場合においても強度保持部材１が変形する恐れを小さくしている。   Further, the mounting member 4 fixed to the upper surface of the strength holding member 1 has a L-shaped side wall that forms the mounting groove 41 functions like a vertical rib, so that it can be used for a long time or unexpectedly loaded from above. Even in such a case, the risk of the strength retaining member 1 being deformed is reduced.

図４は、保護部材２を下方から見た斜視図である。矩形の形状となされた保護部材２の底面には、長手方向に沿って電波到来側に突出したリブ２２が連続して設けられている。またリブ２２の両端には水抜き孔２３が穿設され、電波吸収パネル１０の内部に水分が滞留して電波吸収特性に悪影響を及ぼすのを防止している。かかるリブ２２により、ＡＢＳ樹脂からなり剛性が低く、とりわけ長手方向において長期の使用等により保護部材２がたわんで外観が悪化する恐れを小さくしている。   FIG. 4 is a perspective view of the protective member 2 as viewed from below. On the bottom surface of the protection member 2 having a rectangular shape, a rib 22 protruding toward the radio wave arrival side along the longitudinal direction is continuously provided. Further, drain holes 23 are formed at both ends of the rib 22 to prevent moisture from staying inside the radio wave absorption panel 10 and adversely affecting the radio wave absorption characteristics. The ribs 22 are made of ABS resin and have low rigidity. In particular, the possibility that the protective member 2 is bent due to long-term use in the longitudinal direction and the appearance is deteriorated is reduced.

強度保持部材１は、アルミ板を折り曲げ加工して用いることで、加工の手間が少なく、軽量で強度が高くでき好ましいが、電波を遮へいできる金属であれば特に限定されるものではなく、鉄鋼やそれに亜鉛等のめっきを施したもの、ステンレス等を適宜用いることができる。   The strength holding member 1 is preferably made by bending an aluminum plate so as to reduce the labor of processing, light weight and high strength. However, the strength holding member 1 is not particularly limited as long as it is a metal that can shield radio waves. A material plated with zinc or the like, stainless steel or the like can be used as appropriate.

また保護部材２は、ＡＢＳ樹脂を用いて真空成形を行うことで、リブ、水抜き孔、側壁等複雑な形状のものを一時に成形でき、また衝撃に強く輸送中等で割れが発生する恐れが小さく好ましいが、電波を透過する誘電体で、保護部材としてある程度の強度を有するものであれば特に限定されるものではなく、ポリエチレン、ポリプロピレン、ポリスチレン、ポリ塩化ビニル、ポリカーボネート、ポリエチレンテレフタレート、ポリブチレンテレフタレート、ポリアミド、ポリウレタン、ＡＡＳ樹脂、ＡＥＳ樹脂、フェノール樹脂、メラミン樹脂、ホルムアルデヒド樹脂、尿素樹脂、不飽和ポリエステル樹脂、エポキシ樹脂等を、設置状況や設置期間等に応じて適宜用いて形成してよい。   Also, the protective member 2 can be molded in a complicated shape such as ribs, drain holes, and side walls at a time by vacuum forming using ABS resin, and there is a risk of cracking during transportation, etc. Although it is small and preferable, it is not particularly limited as long as it is a dielectric that transmits radio waves and has a certain degree of strength as a protective member. Polyethylene, polypropylene, polystyrene, polyvinyl chloride, polycarbonate, polyethylene terephthalate, polybutylene terephthalate Polyamide, polyurethane, AAS resin, AES resin, phenol resin, melamine resin, formaldehyde resin, urea resin, unsaturated polyester resin, epoxy resin, and the like may be appropriately used depending on the installation situation, installation period, and the like.

また電波吸収体３は、発泡ポリエチレンにカーボンブラックを含有させたものを用いることで、軽量且つ高性能で、コストを低く抑えることができ好ましいが、こちらも特に限定されるものではなく、金属粉末等の導電性電波吸収材料、カーボンブラックやグラファイト等の誘電性電波吸収材料、フェライト等の磁性電波吸収材料のいずれかを用い、これらの電波吸収材料を合成樹脂やゴム等の誘電体中に混入して成形したり、また磁性電波吸収材料の焼結体などを用いることができる。   Further, the radio wave absorber 3 is preferably made of foamed polyethylene containing carbon black, which is lightweight, high performance, and low in cost. However, this is not particularly limited. Conductive wave absorbing material such as carbon black, graphite or other dielectric wave absorbing material, ferrite or other magnetic wave absorbing material is used, and these wave absorbing materials are mixed in a dielectric such as synthetic resin or rubber. Or a sintered body of a magnetic wave absorbing material can be used.

また取付部材４は、アルミニウム押出形材を用いることで、連続して取付溝４１等の複雑な形状を形成することが容易であり好ましいが、鉄鋼、アルミニウム、ステンレス等の金属材料を折り曲げ加工等して形成してもよい。また取付部材４を強度保持部材１の上面に固着させるには、スポット溶接を行うことで強度保持部材１や取付部材４に穴明け加工を行う必要がなく、また強度保持部材１の上面に孔を明けないことで上方から水分や塵埃等が侵入することがなく好ましいが、こちらも特に限定するものではなく接着剤や接着力の高い両面テープ、リベット止め、ボルト止め等適宜の方法で固着させてよい。   The mounting member 4 is preferably made of an extruded aluminum material, so that it is easy to continuously form a complicated shape such as the mounting groove 41 and the like, but a metal material such as steel, aluminum, and stainless steel is bent. May be formed. Further, in order to fix the attachment member 4 to the upper surface of the strength holding member 1, it is not necessary to drill the strength holding member 1 or the attachment member 4 by spot welding. It is preferable that water and dust do not enter from above, but this is not particularly limited, and it can be fixed by an appropriate method such as adhesive, double-sided tape with high adhesive strength, riveting, bolting, etc. It's okay.

上述の電波級吸収パネルの、天井面等への取り付けの実施例を図面に基づき以下に示す。
図５は、天井面等に梁を介して取り付けられた胴縁Ｆに対する電波吸収パネル１０の取り付けの一例を示す説明図である。胴縁Ｆに取付金具Ｅが胴縁Ｆの延びる方向に沿って摺動可能に取り付けられ、胴縁Ｆと電波吸収パネル１０の長手方向とは直交するように取り付けられる。電波吸収パネル１０に固着された取付部材４の取付溝４１に、ボルトＢの頭部が胴縁Ｆと直交する方向に摺動可能に挿入され、取付金具Ｅに穿設されたボルト孔Ｅ１に、ボルトＢが挿通されてナットＮを螺着してボルト止めがなされることで、電波吸収パネル１０は取付金具Ｅ及び胴縁Ｆを介して桁下に取り付けられる。 An embodiment of mounting the above-described radio wave class absorbing panel to a ceiling surface or the like will be described below with reference to the drawings.
FIG. 5 is an explanatory diagram showing an example of attachment of the radio wave absorption panel 10 to the trunk edge F attached to the ceiling surface or the like via a beam. The mounting bracket E is attached to the trunk edge F so as to be slidable along the direction in which the trunk edge F extends, and is attached so that the longitudinal direction of the trunk edge F and the radio wave absorption panel 10 is orthogonal. The head of the bolt B is slidably inserted in the direction perpendicular to the trunk edge F into the mounting groove 41 of the mounting member 4 fixed to the radio wave absorbing panel 10, and the bolt hole E1 drilled in the mounting bracket E is inserted. When the bolt B is inserted and the nut N is screwed to be bolted, the radio wave absorbing panel 10 is attached to the underside via the mounting bracket E and the trunk edge F.

かかる構造により、天井面等に電波吸収パネル１０を取り付けるのに、予め胴縁Ｆに取付金具Ｅを、取付部材４にボルトを挿入しておくことで、ナットＮを螺着するのみで取り付けが可能となり、余分な部材の取り付けがなく部材の脱落の恐れが小さくなり、取付作業は安全且つ簡便なものとなり得る。またボルトＢ及び取付金具Ｅが直交する方向にそれぞれ摺動可能となされていることで、電波吸収パネル１０の取り付け位置の調整は容易なものとなる。   With this structure, when the radio wave absorbing panel 10 is attached to the ceiling surface or the like, the mounting bracket E is inserted into the trunk edge F in advance and the bolt is inserted into the mounting member 4 so that the nut N is simply screwed. Therefore, there is no need to attach an extra member, and the risk of dropping the member is reduced, and the attaching operation can be safe and simple. Further, since the bolt B and the mounting bracket E are slidable in directions orthogonal to each other, adjustment of the mounting position of the radio wave absorption panel 10 becomes easy.

本発明に係わる電波吸収パネルが取り付けられた自動料金収受システム周辺を示す説明図である。It is explanatory drawing which shows the automatic fee collection system periphery to which the electromagnetic wave absorption panel concerning this invention was attached. 本発明に係わる電波吸収パネルの作製を示す説明図である。It is explanatory drawing which shows preparation of the electromagnetic wave absorption panel concerning this invention. 本発明に係わる電波吸収パネルの断面図である。It is sectional drawing of the electromagnetic wave absorption panel concerning this invention. 本発明に係わる電波吸収パネルの、保護部材の形状を示す説明図である。It is explanatory drawing which shows the shape of the protection member of the electromagnetic wave absorption panel concerning this invention. 本発明に係わる電波吸収パネルの、天井面等への取り付けの一例を示す説明図である。It is explanatory drawing which shows an example of the attachment to the ceiling surface etc. of the electromagnetic wave absorption panel concerning this invention.

符号の説明Explanation of symbols

１ 強度保持部材
２ 保護部材
３ 電波吸収体
４ 取付部材
４１ 取付溝
１０ 電波吸収パネル DESCRIPTION OF SYMBOLS 1 Strength holding member 2 Protective member 3 Wave absorber 4 Mounting member 41 Mounting groove 10 Wave absorbing panel

Claims (3)

一方が開放された箱状体を二体嵌め合わせて中空部を形成し、該中空部に電波吸収体が収納された形成したパネルであって、箱状体の一方は金属からなることで強度を確保する強度保持部材となされ、他方は誘電体からなることで電波吸収体を保護する保護部材となされ、前記強度保持部材に前記保護部材が嵌入されて、前記保護部材の底面側が電波到来面となされていることを特徴とする電波吸収パネル。 One of the box-shaped bodies is made of a metal, and a hollow portion is formed by fitting two open box-shaped bodies together, and a radio wave absorber is housed in the hollow portion. The other is made of a dielectric, and is a protective member for protecting the radio wave absorber. The protective member is inserted into the strength holding member, and the bottom surface side of the protective member is a radio wave arrival surface. An electromagnetic wave absorption panel characterized by being made. 前記強度保持部材は、パネル取付用の取付溝を有する取付部材が固着されていることを特徴とする請求項１に記載の電波吸収パネル。 The radio wave absorption panel according to claim 1, wherein an attachment member having an attachment groove for attaching the panel is fixed to the strength holding member. 前記強度保持部材は、箱状体の周縁を形成する側壁の高さが、前記保護部材の周縁を形成する側壁の高さの略半分となされていることを特徴とする請求項１又は２に記載の電波吸収パネル。 3. The strength holding member according to claim 1, wherein the height of the side wall forming the periphery of the box-shaped body is substantially half the height of the side wall forming the periphery of the protection member. The electromagnetic wave absorption panel described.
JP2003288671A 2003-08-07 2003-08-07 Radio wave absorption panel Expired - Fee Related JP4301893B2 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022196338A1 (en) * 2021-03-16 2022-09-22 Ａｇｃ株式会社 Electromagnetic wave reflection device, electromagnetic wave reflection fence, and method for assembling electromagnetic wave reflection device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022196338A1 (en) * 2021-03-16 2022-09-22 Ａｇｃ株式会社 Electromagnetic wave reflection device, electromagnetic wave reflection fence, and method for assembling electromagnetic wave reflection device

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