JP2006033312A - Antenna and antenna fitting method - Google Patents

Antenna and antenna fitting method Download PDF

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Publication number
JP2006033312A
JP2006033312A JP2004208156A JP2004208156A JP2006033312A JP 2006033312 A JP2006033312 A JP 2006033312A JP 2004208156 A JP2004208156 A JP 2004208156A JP 2004208156 A JP2004208156 A JP 2004208156A JP 2006033312 A JP2006033312 A JP 2006033312A
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antenna
resin case
metal conductor
wireless module
attached
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Inventor
Yoshio Horiike
良雄 堀池
Yoshishige Yoshikawa
嘉茂 吉川
Masafumi Nakagawa
雅文 中川
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Panasonic Holdings Corp
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Matsushita Electric Industrial Co Ltd
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Priority to JP2004208156A priority Critical patent/JP2006033312A/en
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Abstract

<P>PROBLEM TO BE SOLVED: To solve the problem that a wireless module cannot be moved to simply avoid a null point because the wireless module is fitted to an air-conditioner in the case that the wireless module is installed to the null point of electric field strength by a multi-path. <P>SOLUTION: A wireless module disclosed herein adopts a configuration such that a first antenna 3 and a wireless section are incorporated in a first resin case 1, and a metallic conductor is adhered to the outer surface of the first resin case 1 close to the first antenna 3 to make the metallic conductor act as a second antenna 4. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は白物家電機器等に組み込まれ、家庭内通信ネットワークを構築する無線通信モジュールのアンテナ及びアンテナ取り付け方法に関するものである。   The present invention relates to an antenna and a method of attaching an antenna of a wireless communication module that is incorporated in a white goods home appliance or the like and constructs a home communication network.

近年、エアコンや冷蔵庫などの白物家電機器や侵入センサー等のセキュリティ機器と家庭内に設置されたホームコントローラとを無線で接続し、前記ホームコントローラを介して携帯電話と接続し、家の外よりエアコン等の機器をコントロールしたり、家の中のセキュリティ情報を携帯電話を介して外出中の家人に報知したりする家庭内ネットワークシステムが開発されてきている。   In recent years, white appliances such as air conditioners and refrigerators, security devices such as intrusion sensors, and home controllers installed in the home are connected wirelessly and connected to a mobile phone via the home controller. In-home network systems have been developed that control devices such as air conditioners and notify security information in the home to a home away from home via a mobile phone.

このような家庭内ネットワークシステムに用いる無線モジュールはエアコン等の機器への取り付けの容易性の理由から小型であると同時に無線モジュールケースへのアンテナ内蔵が望まれている。   A wireless module used in such a home network system is desired to be small in size and to have an antenna built in a wireless module case for ease of attachment to a device such as an air conditioner.

上記家庭内ネットワークシステムに用いることのできる無線モジュールとしては、特許文献１に記載された無線モジュールを樹脂ケースに収めたものがある。   As a wireless module that can be used in the above-described home network system, there is a wireless module described in Patent Document 1 in a resin case.

図４は、樹脂ケースにアンテナと無線部を収めた従来の無線モジュールである。図４において、１は無線モジュールを覆う第一の樹脂ケースである。   FIG. 4 shows a conventional wireless module in which an antenna and a wireless unit are housed in a resin case. In FIG. 4, reference numeral 1 denotes a first resin case that covers the wireless module.

図５は、図４の無線モジュールの第一の樹脂ケース１の上面をはずした状態を示す。２は無線部を構成する第一のプリント基板、３は銅箔で構成された内蔵アンテナである。
特開２００２−３０５４６１号公報 FIG. 5 shows a state where the upper surface of the first resin case 1 of the wireless module of FIG. 4 is removed. Reference numeral 2 denotes a first printed circuit board constituting the wireless unit, and 3 denotes a built-in antenna made of copper foil.
JP 2002-305461 A

しかしながら、前記従来の構成では、エアコン等の機器に取り付けた場合、無線モジュール単体でのアンテナ特性と指向性が変化する場合があり、対向する通信機器との間で充分なアンテナゲインを得られないという課題があった。   However, in the conventional configuration, when attached to a device such as an air conditioner, the antenna characteristics and directivity of the wireless module alone may change, and a sufficient antenna gain cannot be obtained between the facing communication devices. There was a problem.

また、マルチパスによる電界強度のヌル点に無線モジュールが設置された場合、エアコンに無線モジュールが取り付けられているため簡単にヌル点を避けるように無線モジュールを移動できないという課題があった。   In addition, when a wireless module is installed at a null point of electric field strength due to multipath, there is a problem that the wireless module cannot be moved so as to easily avoid the null point because the wireless module is attached to the air conditioner.

本発明は、前記従来の課題を解決するもので、簡単な構成でアンテナの指向性を変化させ、電界強度のヌル点を簡単に回避アンテナを提供することを目的とする。   SUMMARY OF THE INVENTION The present invention solves the above-described conventional problems, and an object thereof is to provide an antenna in which the directivity of the antenna is changed with a simple configuration and the null point of the electric field strength is easily avoided.

第一の樹脂ケースに第一のアンテナ及び無線部を内蔵した無線モジュールにおいて、前記第一のアンテナに近い前記第一の樹脂ケースの外表面に金属導体を貼り付けて前記金属導体を第二のアンテナとした構成である。   In the wireless module in which the first antenna and the wireless unit are built in the first resin case, a metal conductor is attached to the outer surface of the first resin case close to the first antenna, and the metal conductor is attached to the second resin case. This is an antenna configuration.

これによって、簡単な構成で、アンテナの指向性や対向する相手機器との間のアンテナゲインを改善することができることとなる。   As a result, the antenna directivity and the antenna gain between the opposing device can be improved with a simple configuration.

本発明のアンテナ及びアンテナ取り付け方法を用いることにより、対向する通信相手との通信品質を向上させることが可能となる。   By using the antenna and the antenna mounting method of the present invention, it is possible to improve the communication quality with the opposite communication partner.

第１の発明は、第一の樹脂ケースに第一のアンテナ及び無線部を内蔵した無線モジュールにおいて、前記第一のアンテナに近い前記第一の樹脂ケースの外表面に金属導体を貼り付けて前記金属導体を第二のアンテナとしたことにより、簡単な構成でアンテナ指向特性などのアンテナ特性を改善できる。   1st invention WHEREIN: In the radio | wireless module which incorporated the 1st antenna and the radio | wireless part in the 1st resin case, a metal conductor is affixed on the outer surface of said 1st resin case near said 1st antenna, By using the metal conductor as the second antenna, antenna characteristics such as antenna directivity can be improved with a simple configuration.

第２の発明は、第一の樹脂ケースに第一のアンテナ及び無線部を内蔵した無線モジュールを第二の樹脂ケースの内部に配置し、前記第二の樹脂ケースは前記無線モジュールを内部に配置した状態において前記第一のアンテナに近い前記第一の樹脂ケースの外表面に金属導体が近接するように上記金属導体を配置できるように構成されており、前記金属導体を第二のアンテナとしたことにより、簡単な構成でアンテナ指向特性などのアンテナ特性を改善でき外観上も見栄えをよくすることができる。   According to a second aspect of the present invention, a wireless module in which a first antenna and a wireless unit are built in a first resin case is disposed inside a second resin case, and the wireless module is disposed inside the second resin case. In this state, the metal conductor can be arranged so that the metal conductor is close to the outer surface of the first resin case close to the first antenna, and the metal conductor is used as the second antenna. Thus, the antenna characteristics such as the antenna directivity can be improved with a simple configuration, and the appearance can be improved.

第３の発明は、金属導体は着脱可能な構成としたことにより、違う形状の金属導体を差し替えて最適なアンテナ特性が得られるように金属導体の形状を選択できる。   In the third invention, since the metal conductor is configured to be detachable, the shape of the metal conductor can be selected so that an optimal antenna characteristic can be obtained by replacing the metal conductor having a different shape.

第４の発明は、第二の樹脂ケースは金属導体を差し込む差込口を有し、前記差込口に金属導体を差し込む構成としたことにより、より一層簡単な操作で違う形状の金属導体を差し替えて最適なアンテナ特性が得られるように金属導体の形状を選択できる。   According to a fourth aspect of the present invention, the second resin case has an insertion port into which the metal conductor is inserted, and the metal conductor is inserted into the insertion port. The shape of the metal conductor can be selected so that optimum antenna characteristics can be obtained by replacement.

第５の発明は、第一の樹脂ケースに内蔵される第一のアンテナは、無線部を構成する第一のプリント基板上のグランド及びアンテナ端子から平行に伸びる銅箔線と、前記銅箔線の先端に接続される前記第一のプリント基板に垂直に配置された第二のプリント基板上の銅箔とで構成されたことにより、小型でアンテナ特性に優れた無線モジュールの指向特性を簡単な構成で改善できる。   According to a fifth aspect of the present invention, the first antenna built in the first resin case includes a copper foil wire extending in parallel from the ground and the antenna terminal on the first printed circuit board constituting the radio unit, and the copper foil wire. With the copper foil on the second printed circuit board arranged perpendicularly to the first printed circuit board connected to the tip of the wireless module, the directivity characteristics of the small wireless module with excellent antenna characteristics can be simplified. Can be improved with configuration.

第６の発明は、第一の樹脂ケースに第一のアンテナ及び無線部を内蔵した無線モジュールにおいて、前記第一のアンテナに近い前記第一の樹脂ケースの外表面に金属導体を貼り付けて前記金属導体を第二のアンテナとした構成において、対向する通信相手との通信試験を実施後、所定の受信レベル以下である場合には、第二のアンテナを第一の樹脂ケースに貼り付けるようにしたアンテナ取り付け方法であり、この手順により通信の信頼性をあげることができる。   According to a sixth aspect of the present invention, in the wireless module in which the first antenna and the wireless unit are built in the first resin case, a metal conductor is attached to the outer surface of the first resin case close to the first antenna. In a configuration in which the metal conductor is the second antenna, after conducting a communication test with the opposite communication partner, if the predetermined reception level or lower, the second antenna is attached to the first resin case. Thus, the reliability of communication can be improved by this procedure.

第７の発明は、第一の樹脂ケースに第一のアンテナ及び無線部を内蔵した無線モジュールを第二の樹脂ケースの内部に配置し、前記第二の樹脂ケースは前記無線モジュールを内部に配置した状態において前記第一のアンテナに近い前記第一の樹脂ケースの外表面に金属導体が近接するように上記金属導体を配置できるように構成されており、前記金属導体を第二のアンテナとした構成において、対向する通信相手との通信試験を実施後、所定の受信レベル以下である場合には、第二のアンテナを第一の樹脂ケースに貼り付けるようにしたアンテナ取り付け方法であり、この手順により通信の信頼性をあげることができる。   According to a seventh aspect of the present invention, a wireless module having a first antenna and a radio unit built in a first resin case is disposed inside the second resin case, and the wireless module is disposed inside the second resin case. In this state, the metal conductor can be arranged so that the metal conductor is close to the outer surface of the first resin case close to the first antenna, and the metal conductor is used as the second antenna. In the configuration, after performing a communication test with the opposite communication partner, when the reception level is lower than a predetermined reception level, this is an antenna mounting method in which the second antenna is attached to the first resin case. Can improve the reliability of communication.

第８の発明は、第二のアンテナを取り付けた後、対向する通信相手との通信試験を実施し、その結果第二のアンテナを取り付けた場合のほうが受信レベルが低い場合には、第二のアンテナの形状或いは配置場所を変更するような手順のため、より一層通信の信頼性をあげることができる。   In the eighth aspect of the present invention, after the second antenna is attached, a communication test with the opposite communication partner is performed. As a result, when the reception level is lower when the second antenna is attached, Because of the procedure of changing the shape or location of the antenna, communication reliability can be further increased.

以下、本発明の実施の形態について、図面を参照しながら説明する。なお、この実施の形態によって本発明が限定されるものではない。
（実施の形態１）
図１は本発明の第１の実施の形態におけるアンテナの構造を示すものである。 Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.
(Embodiment 1)
FIG. 1 shows the structure of an antenna according to a first embodiment of the present invention.

図１において、１は無線モジュールを覆う第一の樹脂ケースであり、第一の樹脂ケース１の中には第５図に示す無線部を構成する第一のプリント基板２、銅箔で構成された第一のアンテナである内蔵アンテナ３が入っている。図１の４は金属導体である銅板であり、第一の樹脂ケースの表面に貼り付けている。銅板４を貼り付けている場所は、図５に示す内蔵アンテナ３の真上の部分である。銅板４が第二のアンテナである。   In FIG. 1, reference numeral 1 denotes a first resin case that covers a wireless module. The first resin case 1 includes a first printed circuit board 2 that constitutes a wireless unit shown in FIG. 5 and a copper foil. A built-in antenna 3 as the first antenna is included. Reference numeral 4 in FIG. 1 denotes a copper plate as a metal conductor, which is attached to the surface of the first resin case. The place where the copper plate 4 is affixed is a portion directly above the built-in antenna 3 shown in FIG. The copper plate 4 is the second antenna.

銅板４を内蔵アンテナ３の真上に配置したことにより、銅板４を内蔵アンテナ３の反射器あるいは導波器としての機能をもたせることができ、内蔵アンテナ３と銅板４で一つのアンテナとみなすことができる。その結果、内蔵アンテナ３の指向特性を変化させることができる。   By arranging the copper plate 4 directly above the built-in antenna 3, the copper plate 4 can function as a reflector or a director of the built-in antenna 3, and the built-in antenna 3 and the copper plate 4 are regarded as one antenna. Can do. As a result, the directivity characteristics of the built-in antenna 3 can be changed.

第一の樹脂ケース１は、図１或いは図４から明らかなように内蔵アンテナ３を覆う部分は、内蔵アンテナ３が第一の樹脂ケース１の上面に当たらないように若干盛り上げている。つまり、内蔵アンテナ３の先端と第一の樹脂ケース１の上面とはほとんど隙間がないように設計されている。そのため、銅板４と内蔵アンテナ３の距離は２ｍｍ程度である。すなわち銅板４は内蔵アンテナ３に対して近距離に配置されている。   As is clear from FIG. 1 or FIG. 4, the first resin case 1 is slightly raised so that the built-in antenna 3 does not hit the upper surface of the first resin case 1. That is, the front end of the built-in antenna 3 and the upper surface of the first resin case 1 are designed so that there is almost no gap. Therefore, the distance between the copper plate 4 and the built-in antenna 3 is about 2 mm. That is, the copper plate 4 is disposed at a short distance from the built-in antenna 3.

銅板４は、裏面に取り外し可能な接着剤がついており、第一の樹脂ケース１に覆われた無線モジュールをエアコン等の機器に取り付けた後、第一の樹脂ケース１に銅板４を貼り付けることができる。   The copper plate 4 has a removable adhesive on the back surface, and after the wireless module covered with the first resin case 1 is attached to a device such as an air conditioner, the copper plate 4 is attached to the first resin case 1. Can do.

次に、銅板４を第一の樹脂ケース１に貼り付ける手順について説明する。
１）第一の樹脂ケース１からなる無線モジュールを家庭に設置されているエアコン等の機器に取り付ける。
２）庭の居間などに設置されている無線モジュールを内蔵したホームコントローラと前記エアコンとの間で通信試験を行う。ホームコントローラは前記エアコン等の機器を集中制御するコントローラである。
３）ホームコントローラは表示装置を有し、前記通信試験の結果を表示装置に表示する。表示する結果情報としては、例えば前記エアコンの無線モジュールと前記ホームコントローラの無線モジュール間の電波状態を示す受信レベル情報である。
４）前記エアコンに取り付けた無線モジュールの取り付け位置によっては、マルチパスの影響で電界強度のヌル点に取り付けられる場合がある。前記受信レベルが所定のレベルより低い場合は、上述した電界強度のヌル点に取り付けられたと考えられる。
５）そこで前記受信レベルが所定のレベル以下である場合は、前記エアコンに取り付けた無線モジュールの第一の樹脂ケース１に銅板４を貼り付ける。
６）前記ホームコントローラと前記エアコンとの間で再度通信試験を行い、受信レベルがアップすることを確認する。銅板４によりアンテナ指向特性が変化するため、マルチパスによる電界強度のヌル点が発生する場所が移動する。そのため、通常の場合、５）の操作により受信レベルがアップする。
７）しかしながら万一前記受信レベルが銅板４を貼り付ける前の受信レベルより小さくなってしまった場合は、銅板４をいったんはがし、貼り付ける位置を変えて、６）を再度実行する。 Next, a procedure for attaching the copper plate 4 to the first resin case 1 will be described.
1) A wireless module comprising the first resin case 1 is attached to a device such as an air conditioner installed in the home.
2) A communication test is performed between the air conditioner and a home controller with a built-in wireless module installed in the living room of the garden. The home controller is a controller that centrally controls the devices such as the air conditioner.
3) The home controller has a display device, and displays the result of the communication test on the display device. The result information to be displayed is, for example, reception level information indicating a radio wave state between the wireless module of the air conditioner and the wireless module of the home controller.
4) Depending on the attachment position of the wireless module attached to the air conditioner, it may be attached to the null point of the electric field strength due to the influence of multipath. When the reception level is lower than a predetermined level, it is considered that the reception level is attached to the null point of the electric field strength described above.
5) If the reception level is below a predetermined level, a copper plate 4 is attached to the first resin case 1 of the wireless module attached to the air conditioner.
6) A communication test is performed again between the home controller and the air conditioner to confirm that the reception level is increased. Since the antenna directivity changes due to the copper plate 4, the place where the null point of the electric field strength due to multipath occurs moves. Therefore, in the normal case, the reception level is increased by the operation of 5).
7) However, if the reception level becomes lower than the reception level before the copper plate 4 is pasted, the copper plate 4 is peeled off, the pasting position is changed, and 6) is executed again.

上述の説明の通り、エアコン等の機器に無線モジュールを取り付けた後、通信状態により簡単に銅板４を追加でき、アンテナ指向特性を変化させて、電界強度のヌル点の発生場所を移動できることとなり、受信状態を改善できる。
（実施の形態２）
図２は本発明の第２の実施の形態におけるアンテナの構造を示すものである。 As described above, after attaching a wireless module to a device such as an air conditioner, the copper plate 4 can be easily added depending on the communication state, the antenna directivity can be changed, and the place where the null point of the electric field strength can be moved, The reception state can be improved.
(Embodiment 2)
FIG. 2 shows the structure of the antenna according to the second embodiment of the present invention.

図２において、５は第二の樹脂ケースの片面、６は第二のアンテナである銅板である。   In FIG. 2, 5 is one side of the second resin case, and 6 is a copper plate as the second antenna.

図４で示す第一の樹脂ケース１からなる無線モジュールを第二の樹脂ケースの片面５の上におき、図示していないが第二の樹脂ケースの別の片面をかぶせる。すなわち、第一の樹脂ケース１からなる無線モジュールを第二の樹脂ケースの中に収めた形である。そして第二のアンテナである銅板６のところに図５に示す内蔵アンテナ３がくるように第一の樹脂ケース１を第二の樹脂ケース５の上に配置する。   A wireless module made up of the first resin case 1 shown in FIG. 4 is placed on one side 5 of the second resin case, and another side of the second resin case is covered, although not shown. That is, the wireless module including the first resin case 1 is housed in the second resin case. And the 1st resin case 1 is arrange | positioned on the 2nd resin case 5 so that the built-in antenna 3 shown in FIG.

銅板６の機能は実施の形態１で説明した銅板４と同じである。銅板６は銅板４と同様に樹脂ケース２に貼り付けることができる。また取り外し可能である。   The function of the copper plate 6 is the same as that of the copper plate 4 described in the first embodiment. The copper plate 6 can be attached to the resin case 2 in the same manner as the copper plate 4. It is also removable.

銅板６を第二の樹脂ケース２に貼り付ける手順について説明する。
１）一の樹脂ケース１からなる無線モジュールを家庭に設置されているエアコン等の機器に取り付ける。
２）家庭の居間などに設置されている無線モジュールを内蔵したホームコントローラと前記エアコンとの間で通信試験を行う。ホームコントローラは前記エアコン等の機器を集中制御するコントローラである。
３）ホームコントローラは表示装置を有し、前記通信試験の結果を表示装置に表示する。表示する結果情報としては、例えば前記エアコンの無線モジュールと前記ホームコントローラの無線モジュール間の電波状態を示す受信レベル情報である。
４）前記エアコンに取り付けた無線モジュールの取り付け位置によっては、マルチパスの影響で電界強度のヌル点に取り付けられる場合がある。前記受信レベルが所定のレベルより低い場合は、上述した電界強度のヌル点に取り付けられたと考えられる。
５）そこで前記受信レベルが所定のレベル以下である場合は、前記エアコンに取り付けた無線モジュールに銅板６を取り付けた第二の樹脂ケース２で覆う。
６）前記ホームコントローラと前記エアコンとの間で再度通信試験を行い、受信レベルがアップすることを確認する。銅板６によりアンテナ指向特性が変化するため、マルチパスによる電界強度のヌル点が発生する場所が移動する。そのため、通常の場合、５）の操作により受信レベルがアップする。
７）しかしながら万一前記受信レベルが銅板６を貼り付ける前の受信レベルより小さくなってしまった場合は、第二の樹脂ケースを外し銅板６をいったんはがし、貼り付ける位置を変えて、再び第二の樹脂ケースで無線モジュールを覆った後、６）を再度実行する。 A procedure for attaching the copper plate 6 to the second resin case 2 will be described.
1) A wireless module composed of one resin case 1 is attached to a device such as an air conditioner installed at home.
2) A communication test is performed between the air conditioner and a home controller with a built-in wireless module installed in the living room of the home. The home controller is a controller that centrally controls the devices such as the air conditioner.
3) The home controller has a display device, and displays the result of the communication test on the display device. The result information to be displayed is, for example, reception level information indicating a radio wave state between the wireless module of the air conditioner and the wireless module of the home controller.
4) Depending on the attachment position of the wireless module attached to the air conditioner, it may be attached to the null point of the electric field strength due to the influence of multipath. When the reception level is lower than a predetermined level, it is considered that the reception level is attached to the null point of the electric field strength described above.
5) If the reception level is below a predetermined level, the wireless module attached to the air conditioner is covered with a second resin case 2 with a copper plate 6 attached.
6) A communication test is performed again between the home controller and the air conditioner to confirm that the reception level is increased. Since the antenna directivity is changed by the copper plate 6, the place where the null point of the electric field strength due to multipath is generated moves. Therefore, in the normal case, the reception level is increased by the operation of 5).
7) However, if the reception level becomes lower than the reception level before the copper plate 6 is pasted, the second resin case is removed, the copper plate 6 is peeled off once, the pasting position is changed, and the second is again performed. After covering the wireless module with the resin case, execute 6) again.

上述の説明の通り、エアコン等の機器に無線モジュールを取り付けた後、通信状態により簡単に銅板６を追加でき、アンテナ指向特性を変化させて、電界強度のヌル点の発生場所を移動できることとなり、受信状態を改善できる。そして銅板６が見えないため、見栄えの良い取り付けを実現できる。   As described above, after attaching a wireless module to a device such as an air conditioner, the copper plate 6 can be easily added depending on the communication state, the antenna directivity can be changed, and the location where the null point of the electric field strength can be moved, The reception state can be improved. And since the copper plate 6 is not visible, it is possible to realize a good-looking attachment.

実施の形態１及び実施の形態２において用いられる無線モジュールの第一のアンテナである内蔵アンテナ３の構成について、図３を参照しながら説明する。   The configuration of the built-in antenna 3 that is the first antenna of the wireless module used in the first and second embodiments will be described with reference to FIG.

図３において、７はアンテナ端子から延びる銅箔線、８はグランドから延びる銅箔線、９は第二のプリント基板、１０は第二のプリント基板９上に形成された銅箔である。   In FIG. 3, 7 is a copper foil wire extending from the antenna terminal, 8 is a copper foil wire extending from the ground, 9 is a second printed circuit board, and 10 is a copper foil formed on the second printed circuit board 9.

銅箔１０の一端は銅箔線７に接続され、他端は銅箔線８に接続されている。そして、第二のプリント基板９は無線部回路が乗っている第一のプリント基板２に垂直に配置されている。   One end of the copper foil 10 is connected to the copper foil wire 7, and the other end is connected to the copper foil wire 8. The second printed circuit board 9 is arranged perpendicular to the first printed circuit board 2 on which the radio circuit is mounted.

内蔵アンテナ３として機能するのは、銅箔線７、銅箔線８、及び銅箔１０である。銅箔線７と銅箔線９がモノポールアンテナとして働き、銅箔線１０がループアンテナのような磁流アンテナとして動作する。このようなアンテナは、銅箔１０の近傍に金属導体を配置してもアンテナインピーダンスの大きな変動は見られず、放射効率の大きな変動がない。したがって、図１に示す第二のアンテナ４がある場合に放射効率の低下を招くことなく、指向特性だけを変更することができる。   The copper foil wire 7, the copper foil wire 8, and the copper foil 10 function as the built-in antenna 3. The copper foil wire 7 and the copper foil wire 9 function as a monopole antenna, and the copper foil wire 10 operates as a magnetic current antenna such as a loop antenna. In such an antenna, even if a metal conductor is disposed in the vicinity of the copper foil 10, there is no significant variation in antenna impedance, and there is no significant variation in radiation efficiency. Therefore, when there is the second antenna 4 shown in FIG. 1, only the directivity can be changed without causing a decrease in radiation efficiency.

実施の形態２において第二のアンテナとして銅板６を用いたが、この限りではない。例えば、第二の樹脂ケース５に金属導線を挿入できる差込口があり、第二の樹脂ケース５に第一の樹脂ケース１からなる無線モジュールを収納した後、電界強度のヌル点に前記無線モジュールを設置したと思われるときには、前記第二の樹脂ケースに設けられた差込口に前記金属導体を差し込む。前記差込口は、第一の樹脂ケース１のアンテナ３の付近に来るように第二の樹脂ケース５に設けられている。   Although the copper plate 6 is used as the second antenna in the second embodiment, this is not restrictive. For example, the second resin case 5 has an insertion port into which a metal conductor can be inserted, and after the wireless module including the first resin case 1 is stored in the second resin case 5, the wireless signal is transmitted to the null point of the electric field strength. When it is assumed that the module is installed, the metal conductor is inserted into the insertion port provided in the second resin case. The insertion port is provided in the second resin case 5 so as to come near the antenna 3 of the first resin case 1.

このように構成することにより、実施の形態２に示すように、胴板６を貼り付けるために、いちいち第二の樹脂ケース５をあける必要がない。初めから第一の樹脂ケース１からなる無線モジュールを第二の樹脂ケース５に内蔵して、エアコンに取り付け、通信試験を行った後、必要に応じ前記差込口に金属導体を差込めばよい。また、差込む金属導体の長さを返ることにより、指向特性を変化させることができる。   By comprising in this way, as shown in Embodiment 2, in order to affix the trunk | drum 6, it is not necessary to open the 2nd resin case 5 one by one. A wireless module consisting of the first resin case 1 is built in the second resin case 5 from the beginning, attached to an air conditioner, and after performing a communication test, a metal conductor may be inserted into the insertion port as necessary. . In addition, the directivity can be changed by returning the length of the metal conductor to be inserted.

以上のように本発明にかかるアンテナ及びアンテナ取り付け方法は、エアコン等の機器に無線モジュールを取り付けた後、通信試験の結果に基づき通信状態がより良くなるように簡単な構成でアンテナ指向特性を返ることができる。   As described above, the antenna and the antenna mounting method according to the present invention return the antenna directivity characteristics with a simple configuration so that the communication state is improved based on the result of the communication test after the wireless module is mounted on a device such as an air conditioner. be able to.

本発明の実施の形態１におけるアンテナ構成図Antenna configuration diagram in Embodiment 1 of the present invention 本発明の実施の形態２におけるアンテナ構成図Antenna configuration diagram in Embodiment 2 of the present invention 本発明の実施の形態１及び実施の形態２において用いられる第一のアンテナ構成図First antenna configuration diagram used in the first and second embodiments of the present invention 第一の樹脂ケースからなる無線モジュール形状を示す図The figure which shows the radio module shape which consists of the 1st resin case 従来の無線モジュールとアンテナの構成図Configuration diagram of conventional wireless module and antenna

符号の説明Explanation of symbols

１ 第一の樹脂ケース
２ 第一のプリント基板（無線部の一部）
３ 第一のアンテナ
４ 第二のアンテナ（金属導体）
５ 第二の樹脂ケース
６ 第二のアンテナ（金属導体）
７、８ 銅箔線
９ 第二のプリント基板
１０ 銅箔 1 1st resin case 2 1st printed circuit board (part of radio section)
3 First antenna 4 Second antenna (metal conductor)
5 Second resin case 6 Second antenna (metal conductor)
7, 8 Copper foil wire 9 Second printed circuit board 10 Copper foil

Claims (8)

第一の樹脂ケースに第一のアンテナ及び無線部を内蔵した無線モジュールにおいて、前記第一のアンテナに近い前記第一の樹脂ケースの外表面に金属導体を貼り付けて前記金属導体を第二のアンテナとしたアンテナ。 In the wireless module in which the first antenna and the wireless unit are built in the first resin case, a metal conductor is attached to the outer surface of the first resin case close to the first antenna, and the metal conductor is attached to the second resin case. Antenna as an antenna. 第一の樹脂ケースに第一のアンテナ及び無線部を内蔵した無線モジュールを第二の樹脂ケースの内部に配置し、前記第二の樹脂ケースは前記無線モジュールを内部に配置した状態において前記第一のアンテナに近い前記第一の樹脂ケースの外表面に金属導体が近接するように上記金属導体を配置できるように構成されており、前記金属導体を第二のアンテナとしたアンテナ。 A wireless module in which a first antenna and a wireless unit are incorporated in a first resin case is disposed inside a second resin case, and the second resin case is disposed in the state where the wireless module is disposed inside. The antenna is configured such that the metal conductor can be disposed so that the metal conductor is close to the outer surface of the first resin case close to the first antenna, and the metal conductor is the second antenna. 金属導体は着脱可能な構成とした請求項１或いは請求項２記載のアンテナ。 The antenna according to claim 1 or 2, wherein the metal conductor is configured to be detachable. 第二の樹脂ケースは金属導体を差し込む差込口を有し、前記差込口に金属導体を差し込む構成とした請求項２記載のアンテナ。 The antenna according to claim 2, wherein the second resin case has an insertion port into which a metal conductor is inserted, and the metal conductor is inserted into the insertion port. 第一の樹脂ケースに内蔵される第一のアンテナは、無線部を構成する第一のプリント基板上のグランド及びアンテナ端子から平行に伸びる銅箔線と、前記銅箔線の先端に接続される前記第一のプリント基板に垂直に配置された第二のプリント基板上の銅箔とで構成されたことを特徴とする請求項１或いは請求項２或いは請求項３或いは請求項４記載のアンテナ。 The first antenna built in the first resin case is connected to the ground on the first printed circuit board constituting the radio unit and the copper foil wire extending in parallel from the antenna terminal, and the tip of the copper foil wire. 5. The antenna according to claim 1, 2, 3 or 4, wherein the antenna comprises a copper foil on a second printed circuit board disposed perpendicular to the first printed circuit board. 第一の樹脂ケースに第一のアンテナ及び無線部を内蔵した無線モジュールにおいて、前記第一のアンテナに近い前記第一の樹脂ケースの外表面に金属導体を貼り付けて前記金属導体を第二のアンテナとした構成において、対向する通信相手との通信試験を実施後、所定の受信レベル以下である場合には、第二のアンテナを第一の樹脂ケースに貼り付けるようにしたアンテナ取り付け方法。 In the wireless module in which the first antenna and the wireless unit are built in the first resin case, a metal conductor is attached to the outer surface of the first resin case close to the first antenna, and the metal conductor is attached to the second resin case. An antenna mounting method in which a second antenna is affixed to a first resin case when the antenna is below a predetermined reception level after performing a communication test with an opposing communication partner in a configuration using an antenna. 第一の樹脂ケースに第一のアンテナ及び無線部を内蔵した無線モジュールを第二の樹脂ケースの内部に配置し、前記第二の樹脂ケースは前記無線モジュールを内部に配置した状態において前記第一のアンテナに近い前記第一の樹脂ケースの外表面に金属導体が近接するように上記金属導体を配置できるように構成されており、前記金属導体を第二のアンテナとした構成において、対向する通信相手との通信試験を実施後、所定の受信レベル以下である場合には、第二のアンテナを第一の樹脂ケースに貼り付けるようにしたアンテナ取り付け方法。 A wireless module in which a first antenna and a wireless unit are incorporated in a first resin case is disposed inside a second resin case, and the second resin case is disposed in the state where the wireless module is disposed inside. In the configuration in which the metal conductor can be arranged so that the metal conductor is close to the outer surface of the first resin case close to the first antenna, and the metal conductor is used as the second antenna, the opposing communication An antenna mounting method in which the second antenna is attached to the first resin case when the communication level with the other party is less than or equal to a predetermined reception level after the communication test. 第二のアンテナを取り付けた後、対向する通信相手との通信試験を実施し、その結果第二のアンテナを取り付けた場合のほうが受信レベルが低い場合には、第二のアンテナの形状或いは配置場所を変更するようにした請求項６或いは請求項７記載のアンテナ取り付け方法。 After attaching the second antenna, conduct a communication test with the opposite communication partner. As a result, if the reception level is lower when the second antenna is attached, the shape or location of the second antenna The antenna mounting method according to claim 6 or 7, wherein the antenna is changed.
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