JP2005244885A - Television receiver - Google Patents

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JP2005244885A
JP2005244885A JP2004055338A JP2004055338A JP2005244885A JP 2005244885 A JP2005244885 A JP 2005244885A JP 2004055338 A JP2004055338 A JP 2004055338A JP 2004055338 A JP2004055338 A JP 2004055338A JP 2005244885 A JP2005244885 A JP 2005244885A
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television receiver
array antenna
parasitic
antenna
feeding element
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Makoto Taroumaru
真 太郎丸
Takashi Ohira
孝 大平
Kiyouichi Iigusa
恭一 飯草
Satoru Tawara
覚 俵
Hirotaka Tanaka
啓貴 田中
Takuma Sawatani
琢磨 澤谷
Takashi Ito
伊藤  隆
Emi Morita
恵美 盛田
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ATR Advanced Telecommunications Research Institute International
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ATR Advanced Telecommunications Research Institute International
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Abstract

<P>PROBLEM TO BE SOLVED: To solve the problem that a conventionally well-known diversity antenna capable of easily selecting the orientation of maximum sensitivity by changing directivity to an arbitrary direction is hardly installed on a thin television set because of an installation space, and if it is forcibly installed, the antenna is protruded from the top surface of the receiver and the simple external appearance of the thin television set may be impaired. <P>SOLUTION: By using, for example, comb-like members of a supporting body for supporting the television receiver from a lower direction, an array antenna comprising: at least one parasitic antenna element switching characteristic between reflection and waveguiding by a control signal supplied from the outside; and a feeding element arranged in parallel thereto, is installed in a horizontal state. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

本発明は、テレビ受像機、特に、アレーアンテナを備えたテレビ受像機に関する。   The present invention relates to a television receiver, and more particularly to a television receiver provided with an array antenna.

近年、テレビ受像機は軽量化、薄型化してきており、画面サイズの比較的大きなものでも、携帯型として、屋外での使用や、屋内においても部屋から部屋へ手軽に移動されるといった使用がなされている。
このような使用形態においては、移動されるどの場所においても、放送の受信が出来るように受信アンテナを工夫する必要がある。この場合、従来の室内アンテナに見られたように、アンテナ自体を移動、回転等して受信感度の調整を行うことも出来るが、そのような室内アンテナでは受像機の移動に際して、邪魔になるし、受信周波数帯がUHFといった高周波帯での微妙な調整作業には適当でないといえる。
In recent years, television receivers have become lighter and thinner, and even those with a relatively large screen size can be used as portable devices, such as being used outdoors or being easily moved from room to room indoors. ing.
In such a usage pattern, it is necessary to devise a receiving antenna so that the broadcast can be received at any place where it is moved. In this case, the reception sensitivity can be adjusted by moving and rotating the antenna itself, as seen in conventional indoor antennas. However, with such an indoor antenna, it becomes an obstacle when moving the receiver. Therefore, it can be said that the receiving frequency band is not suitable for delicate adjustment work in a high frequency band such as UHF.

そこで、任意の方向へ指向性を変更して、容易に最大感度の方向を選択することが出来るダイバーシティアンテナを採用することが考えられる。
ダイバーシティアンテナとしては、特許文献1、特許文献2に記載のものが知られている。
特開2002−118414号公報 特許第3439723号公報
Thus, it is conceivable to employ a diversity antenna that can easily select the direction of maximum sensitivity by changing the directivity in an arbitrary direction.
As the diversity antenna, those described in Patent Document 1 and Patent Document 2 are known.
JP 2002-118414 A Japanese Patent No. 3439723

放送電波は水平偏波であるので、平面型アンテナは水平に配置されなければならない。しかしながら、上記特許文献に記載のダイバーシティアンテナは、薄型テレビには設置スペースの関係で設置することが難しいといえる。そして、無理やり設置したとしても、受像機天板から上方に突出していて、薄型テレビのスッキリとした外観を損なう惧れがあり、今一歩工夫が必要と考えられる。   Since broadcast radio waves are horizontally polarized, the planar antenna must be placed horizontally. However, it can be said that the diversity antenna described in the above-mentioned patent document is difficult to install on a flat-screen television because of the installation space. Even if it is installed forcibly, it may protrude upward from the top of the receiver, which may impair the clean appearance of the flat-screen TV.

本発明は、上記課題に鑑みて外観を損なうことなく、且つ、容易に受信感度の高い方向を選択することが出来る新規なアンテナを備えたテレビ受像機を提供することを目的とする。   In view of the above problems, an object of the present invention is to provide a television receiver including a novel antenna that can easily select a direction with high reception sensitivity without impairing the appearance.

上記課題を解決するために、本発明は、テレビ受像機本体を下方から支持する支持体に、水平状態にアレーアンテナを設けたことを特徴とする。
また、前記アレーアンテナは、可変リアクタンス素子が装荷された少なくとも1つの無給電素子と、1つの給電素子と、からなることを特徴とする。
In order to solve the above problems, the present invention is characterized in that an array antenna is provided in a horizontal state on a support that supports a television receiver main body from below.
The array antenna includes at least one parasitic element loaded with a variable reactance element and one feeding element.

また、前記アレーアンテナは、前記1つの給電素子に対して前記少なくとも1つの無給電素子を平行に配置したことを特徴とする。
また、前記アレーアンテナは、前記可変リアクタンス素子が装荷された2つ以上の無給電素子を、前記1つの給電素子の両側に且つ該給電素子に平行に配置したことを特徴とする。
Further, the array antenna is characterized in that the at least one parasitic element is arranged in parallel with the one feeding element.
Further, the array antenna is characterized in that two or more parasitic elements loaded with the variable reactance element are arranged on both sides of the one feeding element and in parallel with the feeding element.

また、前記給電素子は長尺状の金属フィルムからなり、前記無給電素子は長尺状の金属フィルムと可変リアクタンス素子とを直列接続した構成であることを特徴とする。
また、上記支持体は、テレビ受像機本体の下方に水平状態に設けられた櫛歯状体を含み、この櫛歯状体を構成する複数本の歯に給電素子と無給電素子とを分配して埋設若しくは添設したことを特徴とする。
The feeding element is made of a long metal film, and the parasitic element has a configuration in which a long metal film and a variable reactance element are connected in series.
In addition, the support includes a comb-like body provided in a horizontal state below the television receiver main body, and the feeding element and the parasitic element are distributed to a plurality of teeth constituting the comb-like body. It is characterized by being buried or attached.

さらに、上記支持体は、テレビ受像機本体の下方に水平状態に設けられた平板状体を含み、この平板状体に給電素子と無給電素子とを埋設若しくは添設したことを特徴とする。   Further, the support includes a flat plate provided in a horizontal state below the television receiver main body, and a feed element and a parasitic element are embedded or attached to the flat plate.

本発明によれば、テレビ受像機本体を支持する支持体にアレーアンテナを設けたので、特別にアンテナを取付けるためのスペースを設ける必要が無く、従ってテレビ全体の外観を損ねることもない。また、テレビを移動させてもアレーアンテナによって、最適受信状態に設定することができる。さらには、アレーアンテナを支持体に設けているため、液晶テレビや、プラズマディスプレイを用いたテレビなどの薄型テレビに用いることができる実用性の極めて高いものである。   According to the present invention, since the array antenna is provided on the support that supports the television receiver main body, there is no need to provide a special space for mounting the antenna, and therefore the appearance of the entire television is not impaired. Even when the television is moved, the optimum reception state can be set by the array antenna. Furthermore, since the array antenna is provided on the support, it is extremely practical for use in thin televisions such as liquid crystal televisions and televisions using plasma displays.

以下本発明の実施の形態を、図面を参照しながら説明する。
第1図において、図1は、本発明の1実施例におけるテレビ受像機の斜視図である。このテレビ受像機は、例えば液晶パネル等の平面型ディスプレイを主体とした構成のテレビ受像機本体1と、本体1の内部チューナ部と接続されたアンテナを備えた支持体2とからなる。
Embodiments of the present invention will be described below with reference to the drawings.
In FIG. 1, FIG. 1 is a perspective view of a television receiver in one embodiment of the present invention. This television receiver includes a television receiver main body 1 mainly composed of a flat display such as a liquid crystal panel, and a support 2 having an antenna connected to an internal tuner section of the main body 1.

テレビ受像機本体1は、薄型の例えば液晶ディスプレイを主体として構成されており、図示はしないが、チューナ部、映像信号処理部、音声信号処理部、ディスプレイ表示駆動部といった公知の受像回路が設けられている。本体1前面の表示画面4の下部には音声スピーカ3が配されている。
支持体2には本体1から下方に伸びる支柱5とこの支柱5の下端に水平状態に設けられた櫛歯状体6とよりなる。この櫛歯状体6にアンテナ素子を設けることが本発明の特徴であるが、まず、アンテナの基本構成について図2を用いて説明する。
The television receiver body 1 is mainly composed of a thin liquid crystal display, for example, and is provided with a known image receiving circuit such as a tuner unit, a video signal processing unit, an audio signal processing unit, and a display display driving unit (not shown). ing. An audio speaker 3 is disposed below the display screen 4 on the front surface of the main body 1.
The support body 2 includes a support column 5 extending downward from the main body 1 and a comb-like body 6 provided horizontally at the lower end of the support column 5. It is a feature of the present invention to provide an antenna element on the comb-like body 6. First, the basic configuration of the antenna will be described with reference to FIG.

図2に示すようにアレーアンテナは、中央に給電素子7、その両側に無給電素子8,9を平行に配した構成をしている。給電素子7、無給電素子8,9とも、長尺状金属フィルムからなっていて、誘電体基板10の中に埋め込まれて一枚の平板となっている。無給電素子8,9は中央部分で分割され、その間に可変容量ダイオードなどの可変リアクタンス素子11、12が設けられている。素子7,8,9の長さは2分のλ(λは受信波長)又は4分のλであり、いま、UHFの周波数を600MHzとして考えると、λは約50cmとなり、素子の長さは25cm又は12.5cmである。素子7と素子8,9との間隔は0.1λ〜0.35λであり、5cm〜17.5cmとなる。給電素子7には同軸ケーブル13が接続され、この同軸ケーブル13はテレビ受像機本体1のチューナに接続される。可変リアクタンス素子11,12の一端には直流アース用のリード端子14,15が接続され、他端には制御電圧が供給される端子16、17が接続されている。   As shown in FIG. 2, the array antenna has a configuration in which a feeding element 7 is arranged in the center and parasitic elements 8 and 9 are arranged in parallel on both sides thereof. The feeding element 7 and the parasitic elements 8 and 9 are both made of a long metal film and are embedded in the dielectric substrate 10 to form a single flat plate. The parasitic elements 8 and 9 are divided at the central portion, and variable reactance elements 11 and 12 such as variable capacitance diodes are provided therebetween. The lengths of the elements 7, 8, and 9 are λ of half (λ is a reception wavelength) or λ of four. Now, assuming that the UHF frequency is 600 MHz, λ is about 50 cm, and the length of the element is 25 cm or 12.5 cm. The distance between the element 7 and the elements 8 and 9 is 0.1λ to 0.35λ, which is 5 cm to 17.5 cm. A coaxial cable 13 is connected to the power feeding element 7, and this coaxial cable 13 is connected to the tuner of the television receiver body 1. One end of the variable reactance elements 11 and 12 is connected to lead terminals 14 and 15 for DC grounding, and the other end is connected to terminals 16 and 17 to which a control voltage is supplied.

制御電圧により、容量を調整することにより、無給電振素子8,9の等価的な電気長が変わり、無給電素子8,9の特性を導波器に、あるいは反射器にと切り替える。例えば、無給電素子8の等価的な電気長を長くして、反射器の特性を持たせ、無給電素子9の等価的な電気長を短くして、導波器の特性を持たせたとすると、アレーアンテナは、給電素子7を基準として無給電素子9を向いた方向に指向性を持つこととなる。逆に、無給電素子8の等価的な電気長を短くし、無給電振素子9の等価的な電気長を長くすると、給電素子7を基準として無給電素子8を向いた方向に指向性を持つこととなる。さらに、2つの無給電素子8,9の等価的な電気長を共に短くすると、給電素子7を基準として、2つの無給電素子8.9を向く2つの方向に対して指向性を持つこととなる。   By adjusting the capacitance according to the control voltage, the equivalent electrical length of the parasitic elements 8 and 9 is changed, and the characteristics of the parasitic elements 8 and 9 are switched to the waveguide or the reflector. For example, suppose that the equivalent electrical length of the parasitic element 8 is increased to have a reflector characteristic, and the equivalent electrical length of the parasitic element 9 is decreased to have a director characteristic. The array antenna has directivity in a direction facing the parasitic element 9 with respect to the feeding element 7. Conversely, when the equivalent electrical length of the parasitic element 8 is shortened and the equivalent electrical length of the parasitic element 9 is lengthened, the directivity is directed in the direction toward the parasitic element 8 with respect to the feeder element 7. Will have. Further, when the equivalent electrical lengths of the two parasitic elements 8 and 9 are both shortened, the two elements facing the two parasitic elements 8.9 have directivity with respect to the feeding element 7. Become.

無給電素子8,9が反射器、導波器の特性を備え、それによってンテナが指向性を有するのは、八木アンテナの原理と同一である。
また、無給電素子の装荷リアクタンスを3つ以上の状態もしくは連続的に変化させる構成とすれば、より最適な受信感度となる状態を連続的に選択ことも可能である。
以上、第2図により説明したアレーアンテナを本発明では図1に示すように支持体2に組み込む。薄型テレビであるので上面側にアンテナとしての有効な巾がかせげないが、支持体はテレビの巾より必然的に広いので、そこにアンテナを設ける。即ち、支持体2の櫛歯状体6の3本の平行な歯18,19,20に図2で説明した給電素子7、無給電振素子8,9を設ける。これらの素子7,8,9は歯18,19,20に埋設しても良いし、表面、裏面に貼り付けるなど添設しても良い。同軸ケーブル13、制御信号用の線は図1には示していないが支柱5を通ってテレビ受像機本体1に導かれる。寸法関係は図2で説明した長さとなるよう櫛歯状体2を構成する。
The parasitic elements 8 and 9 have the characteristics of a reflector and a director, whereby the antenna has directivity, which is the same as the principle of the Yagi antenna.
Further, if the loading reactance of the parasitic element is changed to three or more states or continuously changed, it is possible to continuously select a state with more optimal reception sensitivity.
As described above, the array antenna described with reference to FIG. 2 is incorporated into the support 2 as shown in FIG. Since it is a flat-screen television, an effective width as an antenna is inevitable on the upper surface side, but the support is necessarily wider than the width of the television, so an antenna is provided there. That is, the feed element 7 and the parasitic vibration elements 8 and 9 described in FIG. 2 are provided on the three parallel teeth 18, 19, and 20 of the comb-like body 6 of the support 2. These elements 7, 8, 9 may be embedded in the teeth 18, 19, 20, or may be attached to the front and back surfaces. Although not shown in FIG. 1, the coaxial cable 13 and the control signal line are led to the television receiver main body 1 through the column 5. The comb-like body 2 is configured so that the dimensional relationship is the length described in FIG.

櫛歯状体6は水平状態に置かれるので給電素子7、無給電素子8,9も水平状態に維持されることになり、水平偏波であるテレビ電波の受信が可能となる。
可変リアクタンス素子11,12に制御電圧を与えて、指向性を変化させ、受信感度の高いビームパターンを選択(指向性ダイバーシティ受信)し、また、操作者の指示に従って選局動作を行う。このようにしてテレビ受像機設置位置において、最適感度での受信を行うことができる。
Since the comb-like body 6 is placed in a horizontal state, the feeding element 7 and the parasitic elements 8 and 9 are also kept in a horizontal state, and it is possible to receive television radio waves that are horizontally polarized waves.
A control voltage is applied to the variable reactance elements 11 and 12 to change the directivity, select a beam pattern with high reception sensitivity (directivity diversity reception), and perform a channel selection operation according to an instruction from the operator. In this manner, reception with optimum sensitivity can be performed at the television receiver installation position.

給電素子7、無給電素子8,9はテレビジョン受像機本体1の下方に水平姿勢で設けられているので、アンテナの感度が落ちるとの危惧もあるが、最近の家屋、ビルにおいては、必ずしも上方ほど受信感度が高いとは言えず、むしろ、反射波が下方ほど少ない場合もあり、その場合は、この形態での実施は有効である。本発明は、アンテナは高いところに設置するという常識を覆して発想の転換を図った画期的なものである。   Since the feeding element 7 and the parasitic elements 8 and 9 are provided in a horizontal position below the television receiver body 1, there is a concern that the sensitivity of the antenna may be lowered. However, in recent houses and buildings, It cannot be said that the reception sensitivity is higher at the upper side, but rather the reflected wave is lower at the lower side. In this case, implementation in this form is effective. The present invention is an epoch-making thing which changed the way of thinking by overturning the common sense that an antenna is installed at a high place.

上記実施の形態以外に本発明の思想の範囲において改変実施できることはもちろんである。したがって、例えば図3に示すように、櫛歯状体の替わりに平板状体21を支持体2に設け、給電素子7、無給電素子8,9を平面状体に21に埋設、又は表面又は裏面に貼り付けるなど添設する。また、図2に示す平板アンテナをそのまま。平板状体21の中に挿入するようにしても良い。   It goes without saying that modifications can be made within the scope of the present invention other than the above embodiment. Therefore, for example, as shown in FIG. 3, a plate-like body 21 is provided on the support body 2 instead of the comb-like body, and the feeding element 7 and the parasitic elements 8, 9 are embedded in the planar body 21 or the surface or Attached to the back side. Also, the flat antenna shown in FIG. You may make it insert in the flat body 21. FIG.

支持体2には特に支柱5は無くてもよく直接テレビ受像機本体1が櫛歯状体6、平板状体21に支持される構成でも良い。
アレーアンテナは、図示例では2本の無給電素子と、1本の給電素子のものを示したが、これに限らず、3本以上の無給電素子と1本の給電素子とを備えた構成、あるいは、感度をそれほど要求しないのであれば無給電素子1本と給電素子1本とを設けた構成でも良い。あるいは、上記無給電素子1本と給電素子1本に可変リアクタンス素子の無い単なる反射器、あるいは導波器を備えた構成のものでもよい。
The support 2 may not have the support 5 in particular, and the TV receiver main body 1 may be directly supported by the comb-like body 6 and the plate-like body 21.
In the illustrated example, the array antenna has two parasitic elements and one feeding element. However, the array antenna is not limited to this, and includes three or more parasitic elements and one feeding element. Alternatively, if the sensitivity is not so required, a configuration in which one parasitic element and one feeding element are provided may be used. Alternatively, a configuration in which the single parasitic element and the single feeding element are provided with a simple reflector without a variable reactance element or a director may be used.

さらには、図2の平板アレーアンテナはこれに限られるものではなく、例えば誘電体基板の半分に接地導体を設け、誘電体を介して前記接地導体と対向して3本の長尺の金属フィルムを平行して設ける。これらの金属フィルムは接地導体より突き出ており、突き出た部分が給電素子、無給電素子となる。給電素子を真ん中にして無給電素子を両脇に配置する。可変リアクタンス素子は接地導体と対抗する金属フィルムの端部に接続する。接地導体と金属フィルムによってマイクロストリップ線路が形成される。このような構成のものも図3の平板状体21にそのまま挿入して使用することができる。また、給電素子、無給電素子を図1の櫛歯状体6に設け、接地導体側を櫛歯状体6の図1の後方延長線上の部分を平板状にして構成すれば実施可能である。   Further, the flat array antenna of FIG. 2 is not limited to this. For example, a ground conductor is provided on one half of a dielectric substrate, and three long metal films are opposed to the ground conductor via a dielectric. Are provided in parallel. These metal films protrude from the ground conductor, and the protruding portions serve as a feeding element and a parasitic element. The parasitic element is arranged on both sides with the feeding element in the middle. The variable reactance element is connected to the end of the metal film facing the ground conductor. A microstrip line is formed by the ground conductor and the metal film. Such a structure can also be used as it is inserted into the flat plate 21 of FIG. Further, it can be implemented by providing a feeding element and a parasitic element on the comb-like body 6 of FIG. 1 and forming the ground conductor side in a flat plate shape on the rear extension line of FIG. 1 of the comb-like body 6. .

本発明は特に液晶テレビやプラズマディスプレイを用いたテレビなど薄型のテレビに用いて有用である。     The present invention is particularly useful for a thin television such as a liquid crystal television or a television using a plasma display.

本発明の一実施例におけるテレビ受像機の斜視図である。It is a perspective view of the television receiver in one Example of this invention. 同テレビ受像機に用いる平板アンテナの原理図である。It is a principle figure of the flat antenna used for the television receiver. 同他の実施例におけるテレビ受像機の斜視図である。It is a perspective view of the television receiver in the other Example.

符号の説明Explanation of symbols

1:テレビ受像機本体
2:支持体
6:櫛歯状体
7:給電素子
8,9:無給電素子
11,12:可変リアクタンス素子
18,19,20:歯
21:平板状体
1: TV receiver main body 2: Support body 6: Comb-like body 7: Feeding element 8, 9: Parasitic element 11, 12: Variable reactance element 18, 19, 20: Teeth 21: Flat body

Claims (7)

テレビ受像機本体を下方から支持する支持体に、水平状態にアレーアンテナを設けたことを特徴とするテレビ受像機。   A television receiver characterized in that an array antenna is provided in a horizontal state on a support that supports the television receiver body from below. 前記アレーアンテナは、可変リアクタンス素子が装荷された少なくとも1つの無給電素子と、1つの給電素子と、からなる請求項1に載のアレーアンテナ装置。   The array antenna apparatus according to claim 1, wherein the array antenna includes at least one parasitic element loaded with a variable reactance element and one feeding element. 前記アレーアンテナは、前記1つの給電素子に対して前記少なくとも1つの無給電素子を平行に配置したことを特徴とする請求項2に記載のアレーアンテナ装置。   The array antenna apparatus according to claim 2, wherein the array antenna includes the at least one parasitic element arranged in parallel to the one feeding element. 前記アレーアンテナは、前記可変リアクタンス素子が装荷された2つ以上の無給電素子を、前記1つの給電素子の両側に且つ該給電素子に平行に配置したことを特徴とする請求項3に記載のアレーアンテナ装置。   4. The array antenna according to claim 3, wherein two or more parasitic elements loaded with the variable reactance element are arranged on both sides of the one feeding element and in parallel with the feeding element. 5. Array antenna device. 前記給電素子は長尺状の金属フィルムからなり、前記無給電素子は長尺状の金属フィルムと可変リアクタンス素子とを直列接続した構成である請求項2乃至4に記載のアレーアンテナ装置。   5. The array antenna device according to claim 2, wherein the feeding element is made of a long metal film, and the parasitic element has a configuration in which a long metal film and a variable reactance element are connected in series. 上記支持体は、テレビ受像機本体の下方に水平状態に設けられた櫛歯状体を含み、この櫛歯状体を構成する複数本の歯に給電素子と無給電素子とを分配して埋設若しくは添設したことを特徴とする請求項1乃至4に記載のテレビ受像機。   The support includes a comb-like body provided in a horizontal state below the television receiver main body, and a power feeding element and a parasitic element are distributed and embedded in a plurality of teeth constituting the comb-tooth body. The television receiver according to claim 1, wherein the television receiver is attached. 上記支持体は、テレビ受像機本体の下方に水平状態に設けられた平板状体を含み、この平板状体に給電素子と無給電素子とを埋設若しくは添設したことを特徴とする請求項1乃至4に記載のテレビ受像機。   The said support body contains the flat plate body provided in the horizontal state under the television receiver main body, The feed element and the parasitic element were embed | buried or attached to this flat plate body, It is characterized by the above-mentioned. The television receiver of thru | or 4.
JP2004055338A 2004-02-27 2004-02-27 Television receiver Pending JP2005244885A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7936317B2 (en) 2007-08-22 2011-05-03 Funai Electric Co., Ltd. Television receiving apparatus
JP5848847B1 (en) * 2015-07-07 2016-01-27 パナソニック株式会社 Antenna device
WO2017006501A1 (en) * 2015-07-07 2017-01-12 ソフトバンク株式会社 Antenna device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7936317B2 (en) 2007-08-22 2011-05-03 Funai Electric Co., Ltd. Television receiving apparatus
JP5848847B1 (en) * 2015-07-07 2016-01-27 パナソニック株式会社 Antenna device
WO2017006501A1 (en) * 2015-07-07 2017-01-12 ソフトバンク株式会社 Antenna device

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