JPS5857800A - Radio wave absorbing wall - Google Patents

Radio wave absorbing wall

Info

Publication number
JPS5857800A
JPS5857800A JP15698681A JP15698681A JPS5857800A JP S5857800 A JPS5857800 A JP S5857800A JP 15698681 A JP15698681 A JP 15698681A JP 15698681 A JP15698681 A JP 15698681A JP S5857800 A JPS5857800 A JP S5857800A
Authority
JP
Japan
Prior art keywords
radio wave
wave absorbing
wall
wall plate
dielectric
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP15698681A
Other languages
Japanese (ja)
Other versions
JPH02879B2 (en
Inventor
津雲 孝世
高坂 修一
笠島 善憲
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kajima Corp
Original Assignee
Kajima Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kajima Corp filed Critical Kajima Corp
Priority to JP15698681A priority Critical patent/JPS5857800A/en
Publication of JPS5857800A publication Critical patent/JPS5857800A/en
Publication of JPH02879B2 publication Critical patent/JPH02879B2/ja
Granted legal-status Critical Current

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  • Building Environments (AREA)
  • Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。
(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【発明の詳細な説明】 この発明は電波吸収壁に関するものである。[Detailed description of the invention] This invention relates to a radio wave absorbing wall.

高層建造物の反射による電波障害が多発して近年問題と
なっているが、現在のところ効果的な対策がとられてい
ないのが現状である。これまで、高層建造物の壁面の形
状を特殊な構造として飛来する電波を散乱、又は至近距
離で収束・消滅させるものや、壁面にフェライト・タイ
ル等の電波吸収板を取り付ける等の手法が試みられて来
た。
Radio interference caused by reflections from high-rise buildings has become a problem in recent years, but no effective countermeasures have been taken so far. Until now, attempts have been made to make the walls of high-rise buildings have special structures that scatter incoming radio waves, or to converge and annihilate them at close range, and to attach radio wave absorbing plates such as ferrite tiles to the walls. I came.

しかしながら、壁面の形状によるものでは完全な電波障
害の除去は難しく、建物内部の間取りも大きな制約を受
けることになる。
However, it is difficult to completely eliminate radio wave interference due to the shape of the walls, and the floor plan inside the building is also subject to significant restrictions.

また、フェライト・タイルによるもの等でも構造、寸法
、重量、耐候性、経済性に問題があり、高層建物の壁材
としては適切ではなかった。とくに、テレビVHF波の
場合は比較的波長が長いためλ/4 の厚みのものとし
てもかなりのものとなり、小型軽量化された電波吸収壁
を得ることは難しかった。
In addition, ferrite tiles had problems in structure, size, weight, weather resistance, and economy, and were not suitable as wall materials for high-rise buildings. In particular, in the case of television VHF waves, since the wavelength is relatively long, even a thickness of λ/4 is quite large, making it difficult to obtain a small and lightweight radio wave absorption wall.

そこで、本発明の目的はこれらの点を考慮して波長に対
して比較的厚さが薄く構造が簡単で経済性も高く、断熱
効果もある電波吸収壁を提供することである。
SUMMARY OF THE INVENTION In consideration of these points, an object of the present invention is to provide a radio wave absorption wall that is relatively thin relative to the wavelength, has a simple structure, is highly economical, and has a heat insulating effect.

本発明によれば、抵抗膜を室内側に形成した誘電体の外
壁板と、室内側には誘電体の内壁板を配置し、この外壁
板と内壁板との間に空気層と電波吸収材を配置して断熱
層を形成してあり、電波吸収材を特殊な形状として電波
の吸収効果を高めたものである。
According to the present invention, a dielectric outer wall plate with a resistive film formed on the indoor side and a dielectric inner wall plate are arranged on the indoor side, and an air layer and a radio wave absorbing material are provided between the outer wall plate and the inner wall plate. are arranged to form a heat insulating layer, and the radio wave absorbing material has a special shape to enhance the radio wave absorption effect.

以下図示する本発明の電波吸収壁実施例により説明する
Embodiments of the radio wave absorbing wall of the present invention shown in the drawings will be explained below.

誘電体であるコンクリート板1の室内側に抵抗膜2を配
置して外壁板3が形成されている。抵抗膜2はパルプ中
にカーボン繊維を重量比で10%程度混入形成したもの
である。この外壁板3から所定間隔をとった室内側には
コンクリート板の内壁板4が設けられている。
An exterior wall board 3 is formed by arranging a resistive film 2 on the indoor side of a dielectric concrete board 1. The resistive film 2 is formed by mixing approximately 10% by weight of carbon fibers into pulp. An inner wall plate 4 made of a concrete plate is provided on the indoor side at a predetermined distance from the outer wall plate 3.

上記外壁板3と内壁板4との間には断熱層5が形成され
ている。この断熱層5は、外壁板3側に設けた空気層6
と、内壁板−4側に配置した電波吸収材7とで構成され
ている。電波吸収材7は、断熱材に所定量のカーボンを
混入し、断面が室外側に向かって鋸歯状すなわち正面か
らみて波状喫状、または角錐状となるよう形成したもの
である。
A heat insulating layer 5 is formed between the outer wall board 3 and the inner wall board 4. This heat insulating layer 5 has an air layer 6 provided on the side of the outer wall board 3.
and a radio wave absorbing material 7 arranged on the inner wall board-4 side. The radio wave absorbing material 7 is a heat insulating material mixed with a predetermined amount of carbon, and is formed to have a sawtooth cross section toward the outdoor side, that is, a wavy draft shape or a pyramid shape when viewed from the front.

この構造の電波吸収壁では壁全体を誘電体とみ力し、壁
中に定在波を生じさせ、抵抗膜2と電波吸収材7で電波
を吸収させるものである。こうして、比誘電率の異なる
物質を組み合わせて伝送損失を高めると同時に、コンク
リート部の厚さに対応して他の層の厚みを調整して所望
の特性を得ることができる。
In the radio wave absorbing wall having this structure, the entire wall is made of a dielectric material, a standing wave is generated in the wall, and the radio wave is absorbed by the resistive film 2 and the radio wave absorbing material 7. In this way, it is possible to increase the transmission loss by combining materials with different dielectric constants, and at the same time, to obtain desired characteristics by adjusting the thickness of other layers in accordance with the thickness of the concrete part.

この実施例によるモデル実験では、全体の壁厚を15c
rn程度としたがTVのV I(F波帯でLowチャン
ネA/ (1c h 〜3c h)で2.5 ’d b
程度、Highチャンネル(4Ch〜12Ch )で1
0db程度の吸収量となつ1こ。
In model experiments according to this example, the overall wall thickness was 15 cm.
rn, but the TV VI (Low channel A/(1ch to 3ch) in the F wave band) was 2.5' db.
degree, 1 on High channel (4Ch to 12Ch)
Absorption amount of about 0db and 1 piece.

こうして、コンクリート板1と、抵抗膜2と、特殊形状
とした電波吸収材7とにより、λ/4よりも薄い壁厚で
効果的に飛来する電波を吸収している。
In this way, the concrete plate 1, the resistive film 2, and the specially shaped radio wave absorbing material 7 effectively absorb incoming radio waves with a wall thickness thinner than λ/4.

この発明による電波吸収壁は以上の通りであす、次に述
べる効果を挙げることができる。
The radio wave absorbing wall according to the present invention has the following effects as described above.

構造が簡単で、波長に対して比較的薄い壁厚で電波の吸
収効果も高く、軽量、経済的で実用性も高い。
It has a simple structure, has a relatively thin wall thickness relative to the wavelength, has a high radio wave absorption effect, is lightweight, economical, and highly practical.

【図面の簡単な説明】[Brief explanation of drawings]

第1図はこの発明による電波吸収壁の実施例を示す断面
図、第2図は電波吸収材の斜視図、第6図、第4図は各
々他の実施例の電波吸収材の形状を示す斜視図である。 1・・・・・・コンクリート板、2・・・・・・抵抗膜
、ろ・・・・・・外壁板、4・・・・・・内壁板、5・
・・・・・断熱層、6・・・・・・空気層、7・・・・
・・電波吸収材、8・・・・・・鉄筋網。 特許出願人 第1図 7 第 3 図 第4図
Fig. 1 is a sectional view showing an embodiment of the radio wave absorbing wall according to the present invention, Fig. 2 is a perspective view of the radio wave absorbing material, and Figs. 6 and 4 each show the shape of the radio wave absorbing material of other embodiments. FIG. 1...Concrete board, 2...Resistive film, Ro...Outer wall board, 4...Inner wall board, 5...
...Insulation layer, 6...Air layer, 7...
...Radio wave absorbing material, 8...Rebar net. Patent applicant Figure 1 Figure 7 Figure 3 Figure 4

Claims (1)

【特許請求の範囲】[Claims] 誘電体室内側に抵抗膜を形成した外壁板と、誘電体から
成る内壁板と、上記外壁板と内壁板との間に形成される
と共に、外壁板側空気層及び内壁板側に設けられ、かつ
室外側に向かって一突出する断面略鋸歯状の電波吸収材
を有する断熱層とからなることを特徴とする電波吸収壁
an outer wall plate with a resistive film formed on the dielectric indoor side, an inner wall plate made of a dielectric, and an air layer formed between the outer wall plate and the inner wall plate, and provided on the outer wall plate side air space and the inner wall plate side, 1. A radio wave absorbing wall comprising: a heat insulating layer having a radio wave absorbing material having a substantially serrated cross section and protruding toward the outside of the room;
JP15698681A 1981-10-02 1981-10-02 Radio wave absorbing wall Granted JPS5857800A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15698681A JPS5857800A (en) 1981-10-02 1981-10-02 Radio wave absorbing wall

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15698681A JPS5857800A (en) 1981-10-02 1981-10-02 Radio wave absorbing wall

Publications (2)

Publication Number Publication Date
JPS5857800A true JPS5857800A (en) 1983-04-06
JPH02879B2 JPH02879B2 (en) 1990-01-09

Family

ID=15639669

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15698681A Granted JPS5857800A (en) 1981-10-02 1981-10-02 Radio wave absorbing wall

Country Status (1)

Country Link
JP (1) JPS5857800A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01207995A (en) * 1988-02-16 1989-08-21 Meidensha Corp Construction method of radio wave-acoustic wave anechoic room
JP4988060B1 (en) * 2011-11-11 2012-08-01 Necトーキン株式会社 Radio wave absorber unit

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004154324A (en) * 2002-11-06 2004-06-03 Aehf Japan Kk Medical examination and treatment facility of chemical intolerance and electromagnetic wave hyperesthesia easily leading to complication with each other

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5320165U (en) * 1976-07-27 1978-02-21

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5320165U (en) * 1976-07-27 1978-02-21

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01207995A (en) * 1988-02-16 1989-08-21 Meidensha Corp Construction method of radio wave-acoustic wave anechoic room
JP4988060B1 (en) * 2011-11-11 2012-08-01 Necトーキン株式会社 Radio wave absorber unit
KR101193921B1 (en) * 2011-11-11 2012-10-29 가부시키가이샤 도낀 이엠씨 엔지니어링 Radio wave absorber unit

Also Published As

Publication number Publication date
JPH02879B2 (en) 1990-01-09

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