JP4133032B2 - Electromagnetic shielding window structure - Google Patents

Electromagnetic shielding window structure Download PDF

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Publication number
JP4133032B2
JP4133032B2 JP2002186596A JP2002186596A JP4133032B2 JP 4133032 B2 JP4133032 B2 JP 4133032B2 JP 2002186596 A JP2002186596 A JP 2002186596A JP 2002186596 A JP2002186596 A JP 2002186596A JP 4133032 B2 JP4133032 B2 JP 4133032B2
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JP
Japan
Prior art keywords
electromagnetic wave
wave shielding
glass
aluminum sash
conductive
Prior art date
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Expired - Fee Related
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JP2002186596A
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Japanese (ja)
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JP2004027676A (en
Inventor
哲夫 遠藤
進市 清水
勇雄 三浦
薫 村上
功一 奥野
陽一 勝又
聡 松尾
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.)
Fujita Corp
Nishimatsu Construction Co Ltd
Maeda Corp
Kumagai Gumi Co Ltd
Sato Kogyo Co Ltd
Toda Corp
Original Assignee
Fujita Corp
Nishimatsu Construction Co Ltd
Maeda Corp
Kumagai Gumi Co Ltd
Sato Kogyo Co Ltd
Toda Corp
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Priority to JP2002186596A priority Critical patent/JP4133032B2/en
Publication of JP2004027676A publication Critical patent/JP2004027676A/en
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  • Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)

Description

【0001】
【発明の属する技術分野】
本発明は、電磁波シールド性能を向上させた電磁波シールド窓構造に関する。
【0002】
【従来の技術】
電磁波シールド窓に使用されている電磁波シールドガラスには、導電性金属メッシュ等のシールド材(又はシールド膜)をガラスで挟み込んだ電磁波シールド層内部形成型と、導電性金属膜をガラス表面に塗布又は蒸着した電磁波シールド膜表面形成型とがある。窓枠には一般にアルミサッシが用いられており、アルミサッシは材質上導電性であるので、それ自体は電磁波を漏洩しないが、内外の表面全域が錆止めのためにアルマイト処理されているので、アルミサッシの表面は電気的には絶縁層となり、アルミサッシは、そのままでは電磁波シールドガラスの内部の電磁波シールド層又は表面の導電性金属膜とは電気的に導通しない。このため、電磁波シールドガラスとアルミサッシとの間で電磁波シールド性能が低下するという問題がある。
【0003】
その問題について説明すると、図1は、電磁波シールド層内部形成型の電磁波シールドガラスを用い、その電磁波シールド層とアルミサッシとの間で電気的に導通をせずに、電磁波シールドガラスをアルミサッシにセットした場合である。電磁波シールドガラス1は、ガラス2・3にて導電性金属メッシュのシールド材4を挟み、このシールド材4の周縁部である端子部4aをガラス2・3の周縁から突出させたものである。同図では、電磁波シールドガラス1の周縁部は、アルミサッシ5の溝内に挿入して溝内面との間に充填した内側のシーリング材6及び外側のシーリング材7にて溝内に固定され、またシールド材4の端子部4aは、内側のシーリング材6に巻き込まれてアルミサッシ5の溝内面に添えられている。
【0004】
この図1の場合、アルミサッシ5の内表面(溝内面)はアルマイトによる絶縁層(アルマイト処理層)8Aとなっているので、シールド材4の端子部4aとアルミサッシ5とは電気的に導通せず、室外(躯体9の外方)からの電磁波のうち、シールド材4を反射してからアルミサッシ5の溝の金属面とシールド材4の端子部4aとを繰り返し反射し、シールド材4を再び反射する電磁波1(図中は丸数字)は、躯体9の内方へ侵入する。室内からの電磁波も同様である。
【0005】
また、アルミサッシ5の外表面も同様に絶縁膜(アルマイト処理層)8Bとなっているので、躯体9の室内側表面に電磁シールド層10が施されていても、電磁波2(図中は丸数字)は、この絶縁層8Bを透過してアルミサッシ5と電磁シールド層10の間の隙間から侵入する。なお、符号11は、アルミサッシ5の溝内で電磁波シールドガラス1の周縁を受けるセッティングブロックである。
【0006】
電磁波シールド層内部形成型の電磁波シールドガラスとアルミサッシとの間に電磁波シールドを施した電磁波シールド窓として、例えば特開2000−54754号公報に記載のものがある。この電磁波シールド窓では、電磁波シールドガラスの電磁波シールド層(スパッタリング膜)よりの導電端子を、ガラスの端縁からガラス表面へとコ字状に添接し、この導電端子に接するように、導電性バックアップ材又は導電性ガスケットをガラス表面とアルミサッシの溝内面との間に詰め込み、更にその外側において、ガラス表面とアルミサッシの溝内面との間にガラスシーリング材を詰め込んでいる。
【0007】
しかし、これでは、ガラス表面上の導電端子と導電性バックアップ材又は導電性ガスケットとは電気的に導通するものの、導電性バックアップ材又は導電性ガスケットとアルミサッシの金属面との間は、アルミサッシのアルマイト処理層のために導通せず、アルミサッシがアルマイト処理されていることによる電磁波侵入・漏洩の問題は解消されない。
【0008】
そこで、図2に示すように、アルミサッシに代えてステンレスサッシ12を用い、電磁波シールドガラス1のシールド材4の端子部4aを巻き込むようにして、導電性ガスケット13をガラス表面とステンレスサッシ12の溝内面との間に詰め込み、またステンレスサッシ12の外表面を、躯体9の内表面の電磁シールド層10に接触させれば、上記のような電磁波侵入・漏洩の問題は解消され、30dB以上の電磁波シールド性能を有する電磁波シールド窓とすることができる。
【0009】
しかしながら、ステンレスサッシはアルミサッシに比べてコストが高く、一般の居室の窓枠の大半はアルミサッシであるため、一般の居室をリニューアル工事により電磁波シールドオフィスに性能アップする場合、アルミサッシをステンレスサッシに交換するには、その交換工事も含めてコストが掛かりすぎる。
【0010】
一方、図3に示すように、アルミサッシ5をそのまま用い、そのアルマイト処理層を部分的に剥がして、アルミサッシ5の金属面とシールド材4の端子部4a及び導電性ガスケット13との間の電気的導通、及びアルミサッシ5の金属面と躯体9の内表面の電磁シールド層10との間の電気的導通をとれば、上記のような電磁波侵入・漏洩の問題は解消され、30dB以上の電磁波シールド性能を有する電磁波シールド窓とすることができる。同図において、符号14が、アルミサッシ5の溝内面のアルマイト処理層8Aを剥がした部分、15が、アルミサッシ5の外表面のアルマイト処理層8Bを剥がした部分である。
【0011】
【発明が解決しようとする課題】
しかしながら、アルマイト処理層を剥がすと錆びが発生する。また、アルマイト処理層を部分的に欠如したアルミサッシを製造することは困難であるため、アルマイト処理層の剥離作業は現場で実施することになるが、その作業は大変面倒であるに加え、シールド性能にバラツキが生ずることは否めない。
【0012】
そこで、本発明の目的は、アルミサッシのアルマイト処理層を剥がして電気的導通をとらなくとも、アルマイト処理層があることによる電磁波侵入・漏洩の問題を簡単に解消できる電磁波シールド窓構造を提供することにある。
【0013】
【課題を解決するための手段】
請求項1に係る本発明の電磁波シールド窓構造では、図4に示す実施例及び図5に示す実施例のように、アルミサッシ5の表面に、その表面より一部分が越える金属当て板16が付設され、その越えた部分の内側面と、電磁波シールドガラス1の表面と、アツミサッシ5の溝内のアルマイト処理層8Aの表面とで形成される空間に、導電性シーリング材17が充填され、その導電性シーリング材充填部に、電磁波シールドガラス1から突出したシールド材4の端子部4aが埋設されているとともに、その導電性シーリング材充填部の外側において、金属当て板16の内側面と電磁波シールドガラス1の表面との間に、シーリング材6が充填されている。
【0014】
請求項2に係る本発明の電磁波シールド窓構造では、さらに、シールド材4の端子部4aを巻き込む導電性ガスケット13が、導電性シーリング材17の充填部に密着させて、アルミサッシ5の溝内に挿入されている。
【0015】
【発明の実施の形態】
次に、本発明の実施の形態を図面に基づいて詳細に説明する。
【0016】
図4は本発明の第1実施例を示す。ここで用いる電磁波シールドガラス1は、前述した図1〜図3の場合と同様に、ガラス2・3にて導電性金属メッシュのシールド材4を挟み、このシールド材4の周縁部である端子部4aをガラス2・3の周縁から突出させたものである。アルミサッシ5は、内外表面のアルマイト処理層8A・8Bを剥がさずにそのまま使用する。施工は次のような工程で行う。
【0017】
<1>電磁波シールドガラス1の周縁部をアルミサッシ5の溝内にセットする。
<2>シールド材4の突出した端子部4aを導電性ガスケット13で巻き込んで、この導電性ガスケット13をガラス2の表面とアルミサッシ5の溝内面との間に挿入する。
<3>アルミサッシ5の表面の幅員を超える幅のステンレスの平板であるステンレス当て板(金属当て板)16をアルミサッシ5の室内側の表面上に付設する。この際、ステンレス当て板16の一方側は、躯体9の表面の電磁波シールド層10との間に隙間が生じないように、電磁波シールド層10に密着させ、ステンレス当て板16の他方側は、アルミサッシ5の表面からはみ出させる。ステンレス当て板16は、アルミサッシ5又は躯体9に対してビス等で固定する。
<4>ガラス2の表面とアルミサッシ5の溝内面との間、及びガラス2の表面とステンレス当て板16との間に導電性シーリング材17を充填する。その際、導電性シーリング材17を導電性ガスケット13に密着させるとともに、シールド材4の端子部4aの一部分が、導電性シーリング材17に埋設されるようにする。
<5>仕上げとして、導電性シーリング材17の外側において、ガラス2の表面とステンレス当て板16との間に通常のシーリング材6を充填する。ガラス3の表面とアルミサッシ5の溝内面との間にも、シーリング材7を充填する。このシーリング材7は先に充填しておいてもよい。
【0018】
このようにして施工された電磁波シールド窓構造は、ガラス2の表面とアルミサッシ5の溝内面との間に詰め込んだ導電性ガスケット13と導電性シーリング材17とが、電磁波シールドガラス1の周縁部とアルミサッシ5の溝内面との間で電磁波シールドを補填する導電性バックアップ部18となり、更にアルミサッシ5の表面に付設したステンレス当て板16が、この導電性バックアップ部18を躯体9の表面の電磁波シールド層10へと連続して電気的に導通させるので、アルミサッシ5の内外表面にアルマイト処理層8A・8Bがそのままあっても、電磁波の侵入・漏洩を防止できる。
【0019】
図5に示す第2実施例は、図4における導電性ガスケット13を省略し、導電性シーリング材17のみで導電性バックアップ部18を構成したものである。この場合、導電性ガスケット13の挿入は行わず、導電性シーリング材17でシールド材4の端子部4aを巻き込むようにして、ガラス2の表面とアルミサッシ5の溝内面との間、及びガラス2の表面とステンレス当て板16との間に導電性シーリング材17を充填する。その後、ガラス2の表面とステンレス当て板16との間に通常のシーリング材6を充填する。
【0020】
図6に示す参考実施例は、平板のステンレス当て板に代えてアングル部16aを有するL形のステンレス当て板16を用いることで、図4における導電性シーリング材17を省略したものである。この場合、次の工程で施工する。
【0021】
<1>電磁波シールドガラス1の周縁部をアルミサッシ5の溝内にセットする。<2>シールド材4の突出した端子部4aを導電性ガスケット13で巻き込んで、この導電性ガスケット13をガラス2の表面とアルミサッシ5の溝内面との間に挿入する。
<3>アングル部16aを有するL形のステンレス当て板(金属当て板)16をアルミサッシ5の室内側の表面上に付設する。この際、ステンレス当て板16の一方側は、躯体9の表面の電磁波シールド層10との間に隙間が生じないように、電磁波シールド層10に密着させ、アングル部16aは、電磁波シールドガラス1側に向けてそのガラス表面との間に僅かな隙間を残す。
<4>アングル部16aと導電性ガスケット13との間において、ガラス2の表面とアルミサッシ5の溝内面との間に通常のシーリング材6を充填する。その際、シールド材4の端子部4aの先端部分を、シーリング材6で押さえるようにしてアングル部16aに接触させれば、シールド材4は、ステンレス当て板16を介して躯体9の表面の電磁波シールド層10と電気的に導通される。
【0022】
図7は、図6に示す参考実施例で本発明者らが実験した電磁波シールド性能の実測グラフで、図4の第1実施例及び図5の第2実施例のように、シールド材4の端子部4aの一部分が、導電性シーリング材17に埋設されていなくとも、水平偏波及び垂直偏波とも、30dB以上の性能を達成できた。
【0023】
なお、アルミサッシ5の表面上に付設する金属当て板としては、ステンレス板が好適であるが、それに代えてアルミニウム板等の他の金属板を用いてもよい。
【0024】
【発明の効果】
【0025】
本発明によると次のような効果がある。
(1)電磁波シールドガラスのガラス表面とアルミサッシの溝内面との間に充填した導電性シーリング材充填部と、アルミサッシの表面上に付設した金属当て板とが、電磁波シールドガラスの内部のシールド材と躯体表面の電磁波シールド層との間を補填して電磁波シールドし、しかも、電磁波シールドガラスから突出したシールド材の端子部は、アルミサッシの溝内に充填した導電性シーリング材充填部に埋設されるので、アルミサッシの内外表面にアルマイト処理層がそのままあっても、電磁波の侵入・漏洩を確実に防止できる。
従って、施工性が非常に良く、窓枠がアルミサッシである一般の窓を電磁波シールド窓に改造する場合、その工事を簡単かつ経済的に行える。また、簡単な構造であるにも拘わらず充分なシールド性能を確保できる。
【0026】
(2)電磁波シールドガラス内のシールド材が、導電性シーリング材充填部及び金属当て板を介して躯体表面の電磁波シールド層と電気的導通状態にされるので、電磁波シールド性能が向上する。
【0027】
(3)導電性シーリング材は、アルミサッシの溝内を超えて金属当て板と電磁波シールドガラスのガラス表面との間にまで充填されているので、金属当て板と導電性シーリング材との電気的導通性を高めることができるとともに、シーリング性も高まる。
【0028】
(4)アルミサッシの溝内に充填してシールド材の端子部を埋設した導電性シーリング材充填部を、通常のシーリング材にて溝外から保護できる。
【0029】
請求項2に係る発明によると、上記の効果に加え、次のような効果がある。
(5)アルミサッシの溝内に挿入した導電性ガスケットによって、電磁波シールドガラス内のシールド材と導電性シーリング材充填部との電気的導通性を一層高めることができる。
【図面の簡単な説明】
【図1】 電磁波シールド層内部形成型の電磁波シールドガラスを用い、それとアルミサッシとの間を電磁波シールド構造にしない従来例を示す断面図である。
【図2】 アルミサッシに代えてステンレスサッシを用い、それと電磁波シールドガラスとの間を電磁波シールド構造にした従来例を示す断面図である。
【図3】 アルミサッシのアルマイト処理層を部分的に剥がし、それと電磁波シールドガラスとの間を電磁波シールド構造にした従来例を示す断面図である。
【図4】 本発明の第1実施例の電磁波シールド窓構造を示す断面図である。
【図5】 本発明の第2実施例の電磁波シールド窓構造を示す断面図である。
【図6】 参考実施例の電磁波シールド窓構造を示す断面図である。
【図7】 図6の参考実施例で実験した電磁波シールド性能の実測グラフである。
【符号の説明】
1 電磁波シールドガラス
2・3 ガラス
4 シールド材
4a 端子部
5 アルミサッシ
6・7 シーリング材
8A・8B アルマイト処理層
9 躯体
10 電磁波シールド層
11 セッティングブロック
12 ステンレスサッシ
13 導電性ガスケット
14・15 アルマイト処理層を剥がした部分
16 ステンレス当て板(金属当て板)
17 導電性シーリング材
18 導電性バックアップ部
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an electromagnetic shielding window structure with improved electromagnetic shielding performance.
[0002]
[Prior art]
The electromagnetic wave shielding glass used for the electromagnetic wave shielding window includes an electromagnetic shielding layer internal forming type in which a shielding material (or a shielding film) such as a conductive metal mesh is sandwiched between glasses, and a conductive metal film is applied to the glass surface. There is a deposited electromagnetic shielding film surface forming type. An aluminum sash is generally used for the window frame, and since the aluminum sash is conductive in terms of material, it does not leak electromagnetic waves itself, but the entire inner and outer surfaces are anodized to prevent rusting. The surface of the sash is electrically an insulating layer, and the aluminum sash is not electrically connected to the electromagnetic shielding layer inside the electromagnetic shielding glass or the conductive metal film on the surface as it is. For this reason, there exists a problem that electromagnetic wave shielding performance falls between electromagnetic wave shielding glass and an aluminum sash.
[0003]
To explain the problem, FIG. 1 uses an electromagnetic wave shielding glass formed inside an electromagnetic wave shielding layer, and the electromagnetic wave shielding glass is made into an aluminum sash without electrical conduction between the electromagnetic wave shielding layer and the aluminum sash. This is the case. The electromagnetic wave shielding glass 1 is obtained by sandwiching a shielding metal 4 made of conductive metal mesh between glasses 2 and 3 and projecting a terminal portion 4 a which is a peripheral portion of the shielding material 4 from the peripheral edge of the glass 2 and 3. In the figure, the periphery of the electromagnetic wave shielding glass 1 is fixed in the groove by an inner sealing material 6 and an outer sealing material 7 which are inserted into the groove of the aluminum sash 5 and filled with the inner surface of the groove. The terminal portion 4 a of the shield material 4 is wound around the inner sealing material 6 and attached to the inner surface of the groove of the aluminum sash 5.
[0004]
In the case of FIG. 1, since the inner surface (groove inner surface) of the aluminum sash 5 is an insulating layer (anodized layer) 8A made of anodized, the terminal portion 4a of the shield material 4 and the aluminum sash 5 are electrically connected. Without reflecting the shield material 4 out of the electromagnetic waves from outside the room (outside of the housing 9), the metal surface of the groove of the aluminum sash 5 and the terminal portion 4a of the shield material 4 are repeatedly reflected, and the shield material 4 The electromagnetic wave 1 that reflects the light again (indicated by a circled number in the figure) enters the inside of the housing 9. The same applies to electromagnetic waves from the room.
[0005]
Similarly, since the outer surface of the aluminum sash 5 is also an insulating film (alumite treatment layer) 8B, even if the electromagnetic shielding layer 10 is provided on the indoor side surface of the housing 9, the electromagnetic wave 2 (round in the figure) The numeral) penetrates through the insulating layer 8B and enters through the gap between the aluminum sash 5 and the electromagnetic shield layer 10. Reference numeral 11 denotes a setting block that receives the periphery of the electromagnetic wave shielding glass 1 in the groove of the aluminum sash 5.
[0006]
An example of an electromagnetic wave shielding window in which an electromagnetic wave shield is provided between an electromagnetic wave shielding glass of an electromagnetic wave shielding layer forming type and an aluminum sash is disclosed in, for example, Japanese Patent Application Laid-Open No. 2000-54754. In this electromagnetic shielding window, a conductive backup from the electromagnetic shielding layer (sputtering film) of the electromagnetic shielding glass is attached in a U shape from the edge of the glass to the glass surface, and the conductive backup is made so as to contact the conductive terminal. A material or a conductive gasket is packed between the glass surface and the inner surface of the groove of the aluminum sash, and further, a glass sealing material is packed between the glass surface and the inner surface of the groove of the aluminum sash.
[0007]
However, in this case, although the conductive terminal on the glass surface and the conductive backup material or conductive gasket are electrically connected, the space between the conductive backup material or conductive gasket and the metal surface of the aluminum sash is not limited to the aluminum sash. The alumite treatment layer is not conductive, and the problem of electromagnetic wave intrusion and leakage due to the aluminum sash being anodized is not solved.
[0008]
Therefore, as shown in FIG. 2, a stainless steel sash 12 is used in place of the aluminum sash, and the conductive gasket 13 is attached to the glass surface and the stainless steel sash 12 so as to wind the terminal portion 4a of the shielding material 4 of the electromagnetic wave shielding glass 1. If the outer surface of the stainless steel sash 12 is brought into contact with the electromagnetic shield layer 10 on the inner surface of the housing 9, the problem of electromagnetic wave intrusion / leakage as described above can be solved, and more than 30 dB. It can be set as the electromagnetic shielding window which has electromagnetic shielding performance.
[0009]
However, stainless steel sashes are more expensive than aluminum sashes, and most of the window frames of ordinary rooms are made of aluminum sashes. Therefore, when upgrading the performance of an ordinary room to an electromagnetic shielding office by renewal construction, the aluminum sash is made of stainless steel. To replace it, it is too expensive, including the replacement work.
[0010]
On the other hand, as shown in FIG. 3, the aluminum sash 5 is used as it is, the anodized layer is partially peeled off, and the space between the metal surface of the aluminum sash 5 and the terminal portion 4a of the shield material 4 and the conductive gasket 13 is removed. If electrical continuity and electrical continuity between the metal surface of the aluminum sash 5 and the electromagnetic shield layer 10 on the inner surface of the housing 9 are taken, the problem of electromagnetic wave intrusion / leakage as described above can be solved, and 30 dB or more. It can be set as the electromagnetic shielding window which has electromagnetic shielding performance. In the figure, reference numeral 14 denotes a portion where the alumite treatment layer 8A on the inner surface of the groove of the aluminum sash 5 is peeled off, and 15 denotes a portion where the alumite treatment layer 8B on the outer surface of the aluminum sash 5 is peeled off.
[0011]
[Problems to be solved by the invention]
However, rusting occurs when the anodized layer is peeled off. Also, since it is difficult to manufacture an aluminum sash that is partially lacking an anodized layer, the anodized layer is peeled off on site, which is very cumbersome and includes shielding. It cannot be denied that the performance varies.
[0012]
Therefore, an object of the present invention is to provide an electromagnetic wave shielding window structure that can easily solve the problem of electromagnetic wave intrusion / leakage due to the presence of the anodized layer without peeling off the anodized layer of the aluminum sash and establishing electrical conduction. There is.
[0013]
[Means for Solving the Problems]
In the electromagnetic wave shielding window structure according to the first aspect of the present invention, as in the embodiment shown in FIG. 4 and the embodiment shown in FIG. 5, a metal pad 16 that is partially over the surface is attached to the surface of the aluminum sash 5. A conductive sealing material 17 is filled in a space formed by the inner surface of the part beyond the surface, the surface of the electromagnetic wave shielding glass 1, and the surface of the anodized layer 8A in the groove of the atsumi sash 5. The terminal portion 4a of the shield material 4 protruding from the electromagnetic wave shielding glass 1 is embedded in the conductive sealing material filling portion, and the inner side surface of the metal pad 16 and the electromagnetic wave shielding glass outside the conductive sealing material filling portion. The sealing material 6 is filled between the surface of 1.
[0014]
In the electromagnetic wave shielding window structure according to the second aspect of the present invention, the conductive gasket 13 for winding the terminal portion 4a of the shielding material 4 is brought into close contact with the filling portion of the conductive sealing material 17 so as to be in the groove of the aluminum sash 5. Has been inserted.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
Next, embodiments of the present invention will be described in detail with reference to the drawings.
[0016]
FIG. 4 shows a first embodiment of the present invention. As in the case of FIGS. 1 to 3 described above, the electromagnetic wave shielding glass 1 used here sandwiches the shielding material 4 of the conductive metal mesh between the glass 2 and 3, and is a terminal portion that is a peripheral portion of the shielding material 4. 4a is projected from the periphery of the glass 2.3. The aluminum sash 5 is used as it is without peeling off the anodized layers 8A and 8B on the inner and outer surfaces. Construction will be done in the following process.
[0017]
<1> The periphery of the electromagnetic wave shielding glass 1 is set in the groove of the aluminum sash 5.
<2> The protruding terminal portion 4 a of the shield material 4 is wound around with the conductive gasket 13, and the conductive gasket 13 is inserted between the surface of the glass 2 and the groove inner surface of the aluminum sash 5.
<3> A stainless steel plate (metal plate) 16, which is a stainless steel flat plate having a width exceeding the width of the surface of the aluminum sash 5, is provided on the indoor surface of the aluminum sash 5. At this time, one side of the stainless steel backing plate 16 is brought into close contact with the electromagnetic wave shielding layer 10 so that no gap is formed between the surface of the housing 9 and the electromagnetic shielding layer 10 on the surface of the housing 9, and the other side of the stainless steel backing plate 16 is made of aluminum. It protrudes from the surface of the sash 5. The stainless steel backing plate 16 is fixed to the aluminum sash 5 or the housing 9 with screws or the like.
<4> A conductive sealant 17 is filled between the surface of the glass 2 and the groove inner surface of the aluminum sash 5 and between the surface of the glass 2 and the stainless steel plate 16. At this time, the conductive sealing material 17 is brought into close contact with the conductive gasket 13, and a part of the terminal portion 4 a of the shield material 4 is embedded in the conductive sealing material 17.
As a <5> finish, a normal sealing material 6 is filled between the surface of the glass 2 and the stainless steel plate 16 outside the conductive sealing material 17. Sealing material 7 is also filled between the surface of glass 3 and the groove inner surface of aluminum sash 5. This sealing material 7 may be filled in advance.
[0018]
The electromagnetic wave shielding window structure thus constructed is such that the conductive gasket 13 and the conductive sealing material 17 packed between the surface of the glass 2 and the groove inner surface of the aluminum sash 5 are the peripheral edge of the electromagnetic wave shielding glass 1. And a stainless steel backing plate 16 attached to the surface of the aluminum sash 5, and the conductive backup portion 18 on the surface of the housing 9. Since electrical conduction is continuously made to the electromagnetic wave shielding layer 10, even if the anodized layers 8A and 8B are directly on the inner and outer surfaces of the aluminum sash 5, intrusion and leakage of electromagnetic waves can be prevented.
[0019]
In the second embodiment shown in FIG. 5, the conductive gasket 13 in FIG. 4 is omitted, and the conductive backup portion 18 is configured only by the conductive sealing material 17. In this case, the conductive gasket 13 is not inserted, and the terminal portion 4a of the shield material 4 is wound with the conductive sealing material 17, so that the glass 2 and the surface of the groove of the aluminum sash 5 and the glass 2 are inserted. A conductive sealant 17 is filled between the surface of the steel plate and the stainless steel plate 16. Thereafter, a normal sealing material 6 is filled between the surface of the glass 2 and the stainless steel plate 16.
[0020]
In the reference embodiment shown in FIG. 6, the conductive sealing material 17 in FIG. 4 is omitted by using an L-shaped stainless steel plate 16 having an angle portion 16a in place of the flat stainless steel plate. In this case, it is constructed in the next process.
[0021]
<1> The periphery of the electromagnetic wave shielding glass 1 is set in the groove of the aluminum sash 5. <2> The protruding terminal portion 4 a of the shield material 4 is wound around with the conductive gasket 13, and the conductive gasket 13 is inserted between the surface of the glass 2 and the groove inner surface of the aluminum sash 5.
<3> An L-shaped stainless steel plate (metal plate) 16 having an angle portion 16 a is provided on the indoor surface of the aluminum sash 5. At this time, one side of the stainless steel backing plate 16 is brought into close contact with the electromagnetic wave shielding layer 10 so that no gap is formed between the surface of the housing 9 and the electromagnetic wave shielding layer 10 on the surface of the housing 9, and the angle part 16a is formed on the electromagnetic wave shielding glass 1 side. Leaving a slight gap in between the glass surface.
<4> Between the angle portion 16 a and the conductive gasket 13, the normal sealing material 6 is filled between the surface of the glass 2 and the groove inner surface of the aluminum sash 5. At that time, if the tip portion of the terminal portion 4 a of the shield material 4 is brought into contact with the angle portion 16 a so as to be pressed by the sealing material 6, the shield material 4 is caused to be electromagnetic waves on the surface of the housing 9 via the stainless steel plate 16. It is electrically connected to the shield layer 10.
[0022]
FIG. 7 is an actual measurement graph of the electromagnetic shielding performance which the present inventors experimented in the reference example shown in FIG. 6, and the shielding material 4 of the first example in FIG. 4 and the second example in FIG. Even if a part of the terminal portion 4a is not embedded in the conductive sealing material 17, both horizontal polarization and vertical polarization can achieve performance of 30 dB or more.
[0023]
A stainless steel plate is suitable as the metal pad attached on the surface of the aluminum sash 5, but other metal plates such as an aluminum plate may be used instead.
[0024]
【The invention's effect】
[0025]
The present invention has the following effects.
(1) A conductive sealing material filling portion filled between the glass surface of the electromagnetic wave shielding glass and the inner surface of the groove of the aluminum sash, and a metal pad attached on the surface of the aluminum sash are used as a shield inside the electromagnetic wave shielding glass. Shielding the electromagnetic wave by compensating between the material and the electromagnetic shielding layer on the housing surface, and the terminal part of the shielding material protruding from the electromagnetic shielding glass is embedded in the conductive sealing material filling part filled in the groove of the aluminum sash Therefore, even if the alumite treatment layer is left on the inner and outer surfaces of the aluminum sash, it is possible to reliably prevent electromagnetic waves from entering and leaking.
Therefore, the workability is very good, and when a general window whose window frame is an aluminum sash is remodeled to an electromagnetic wave shield window, the work can be performed easily and economically. In addition, despite the simple structure, sufficient shielding performance can be ensured.
[0026]
(2) Since the shielding material in the electromagnetic wave shielding glass is brought into electrical conduction with the electromagnetic wave shielding layer on the surface of the housing through the conductive sealing material filling part and the metal pad, the electromagnetic wave shielding performance is improved.
[0027]
(3) Since the conductive sealing material is filled between the metal sash and the glass surface of the electromagnetic shielding glass beyond the groove of the aluminum sash, the electrical contact between the metal proof plate and the conductive sealing material The electrical conductivity can be enhanced and the sealing property is also enhanced.
[0028]
(4) The conductive sealing material filling portion filled in the groove of the aluminum sash and embedded with the terminal portion of the shield material can be protected from the outside of the groove with a normal sealing material.
[0029]
According to the invention which concerns on Claim 2, in addition to said effect, there exist the following effects.
(5) The electrical conductivity between the shielding material in the electromagnetic wave shielding glass and the conductive sealing material filling portion can be further enhanced by the conductive gasket inserted into the groove of the aluminum sash.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view showing a conventional example in which an electromagnetic wave shielding glass with an internal electromagnetic wave shielding layer is used and an electromagnetic wave shielding structure is not provided between the glass and the aluminum sash.
FIG. 2 is a cross-sectional view showing a conventional example in which a stainless steel sash is used instead of an aluminum sash and an electromagnetic wave shielding structure is provided between the stainless steel sash and the electromagnetic wave shielding glass.
FIG. 3 is a sectional view showing a conventional example in which an alumite treatment layer of an aluminum sash is partially peeled off and an electromagnetic wave shielding structure is formed between the aluminum sash and the electromagnetic wave shielding glass.
FIG. 4 is a cross-sectional view showing an electromagnetic wave shielding window structure according to a first embodiment of the present invention.
FIG. 5 is a sectional view showing an electromagnetic wave shielding window structure according to a second embodiment of the present invention.
FIG. 6 is a cross-sectional view showing an electromagnetic wave shielding window structure of a reference example.
7 is an actual measurement graph of electromagnetic wave shielding performance tested in the reference example of FIG. 6;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Electromagnetic shielding glass 2.3 Glass 4 Shielding material 4a Terminal part 5 Aluminum sash 6-7 Sealing material 8A, 8B Anodized treatment layer 9 Housing 10 Electromagnetic wave shielding layer 11 Setting block 12 Stainless steel sash 13 Conductive gasket 14/15 Anodized treatment layer 16 stripped stainless steel plate (metal plate)
17 Conductive Sealing Material 18 Conductive Backup Part

Claims (2)

導電性のシールド材(4)による電磁波シールド層を内部に形成した電磁波シールドガラス(1)の周縁部をアルミサッシ(5)の溝内にセットして電磁波シールド窓とする電磁波シールド窓構造において、前記アルミサッシ(5)の表面に、その表面より一部分が越える金属当て板(16)が付設され、その越えた部分の内側面と、前記電磁波シールドガラス(1)の表面と、前記アツミサッシ(5)の溝内のアルマイト処理層(8A)の表面とで形成される空間に、導電性シーリング材(17)が充填され、その導電性シーリング材充填部に、電磁波シールドガラス(1)から突出した前記シールド材(4)の端子部(4a)が埋設されているとともに、その導電性シーリング材充填部の外側において、前記金属当て板(16)の内側面と前記電磁波シールドガラス(1)の表面との間に、シーリング材(6)が充填されていることを特徴とする電磁波シールド窓構造。  In the electromagnetic wave shielding window structure in which an electromagnetic wave shielding window (1) having an electromagnetic wave shielding layer (1) formed therein is set in the groove of the aluminum sash (5) to form an electromagnetic wave shielding window. On the surface of the aluminum sash (5), a metal backing plate (16) partly exceeding the surface is attached, and the inner side surface of the part exceeding the surface, the surface of the electromagnetic wave shielding glass (1), and the thickness sash (5 ) In the groove formed with the surface of the anodized layer (8A) in the groove is filled with the conductive sealing material (17), and the conductive sealing material filling portion protrudes from the electromagnetic wave shielding glass (1). The terminal part (4a) of the shield material (4) is embedded, and on the outer side of the conductive sealing material filling part, the inner surface of the metal pad (16) The electromagnetic wave shield between the surface of the glass (1), an electromagnetic wave shielding window structure sealant (6) is characterized in that it is filled. シールド材(4)の端子部(4a)を巻き込む導電性ガスケット(13)が、導電性シーリング材(17)の充填部に密着させて、アルミサッシ(5)の溝内に挿入されていることを特徴とする請求項1に記載の電磁波シールド窓構造。  The conductive gasket (13) that wraps around the terminal portion (4a) of the shield material (4) is inserted into the groove of the aluminum sash (5) in close contact with the filling portion of the conductive sealant (17). The electromagnetic wave shield window structure according to claim 1.
JP2002186596A 2002-06-26 2002-06-26 Electromagnetic shielding window structure Expired - Fee Related JP4133032B2 (en)

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