JPH07249922A - Room antenna - Google Patents
Room antennaInfo
- Publication number
- JPH07249922A JPH07249922A JP4273994A JP4273994A JPH07249922A JP H07249922 A JPH07249922 A JP H07249922A JP 4273994 A JP4273994 A JP 4273994A JP 4273994 A JP4273994 A JP 4273994A JP H07249922 A JPH07249922 A JP H07249922A
- Authority
- JP
- Japan
- Prior art keywords
- antenna
- uhf
- antennas
- vhf
- holding member
- 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
Links
Landscapes
- Variable-Direction Aerials And Aerial Arrays (AREA)
- Support Of Aerials (AREA)
Abstract
Description
【0001】[0001]
【産業上の利用分野】本発明は、UHF及びVHFテレ
ビ放送受信用の室内アンテナに関する。FIELD OF THE INVENTION The present invention relates to an indoor antenna for receiving UHF and VHF television broadcasts.
【0002】[0002]
【従来の技術】従来、UHFテレビ放送受信用室内アン
テナとしては、線状ダイポールアンテナあるいは平面的
に形成されたループアンテナが一般に用いられている。
これらの室内アンテナの指向性は、両側面で受信感度を
持たない8字指向性となっている。2. Description of the Related Art Conventionally, a linear dipole antenna or a planarly formed loop antenna has been generally used as an indoor antenna for receiving UHF television broadcasting.
The directivity of these indoor antennas is an 8-shaped directivity with no reception sensitivity on both sides.
【0003】[0003]
【発明が解決しようとする課題】室内アンテナは、設置
される室内の条件あるいは放送局の位置等によって、必
ずしも電波到来方向に設置されるとは限らず、従来のよ
うに8字指向性のものでは、電波到来方向が両側面に近
い場合、受信感度が極端に低下して良好な受信ができな
いという問題があった。The indoor antenna is not always installed in the direction of arrival of radio waves depending on the indoor conditions in which it is installed, the position of the broadcasting station, etc. However, if the direction of arrival of the radio wave is close to both sides, the reception sensitivity is extremely reduced, and good reception cannot be achieved.
【0004】このような問題を解決するため、2つのル
ープアンテナを水平方向に90°回転して、つまり直交
させて設け、前後方向だけでなく、左右方向にも受信感
度を持たせるようにしたものもある。しかし、これはル
ープアンテナが2つ必要となって大きな占有体積を有す
るという問題がある。In order to solve such a problem, two loop antennas are rotated 90 ° in the horizontal direction, that is, they are provided orthogonally to each other so that the reception sensitivity is provided not only in the front-back direction but also in the left-right direction. There are also things. However, this requires two loop antennas and has a large occupied volume.
【0005】本発明は上記実情に鑑みてなされたもの
で、簡単な構成で、且つ大きな占有体積を必要とせず、
前後及び左右方向に受信感度を有する室内アンテナを提
供することを目的とする。The present invention has been made in view of the above circumstances, has a simple structure and does not require a large occupied volume.
It is an object of the present invention to provide an indoor antenna having reception sensitivity in front, rear, left and right directions.
【0006】[0006]
【課題を解決するための手段】本発明は、UHF及びV
HFテレビ放送受信用室内アンテナにおいて、UHFテ
レビ放送受信用アンテナを前後方向に湾曲させたダイポ
ール状若しくはループ状の形状として絶縁材からなる保
持部材で保持することを特徴とする。SUMMARY OF THE INVENTION The present invention is a UHF and V
The indoor antenna for receiving HF television broadcast is characterized in that the antenna for receiving UHF television broadcast is held by a holding member made of an insulating material in a dipole shape or a loop shape curved in the front-rear direction.
【0007】[0007]
【作用】UHFテレビ放送受信用アンテナを前後方向に
湾曲させたダイポール状若しくはループ状の形状とする
ことにより、その指向性は前後方向だけでなく左右方向
にも感度を有するようになり、電波到来方向が両側面に
近い場合でも良好に受信することが可能となる。The UHF television broadcast receiving antenna has a dipole shape or a loop shape curved in the front-rear direction, so that its directivity has sensitivity not only in the front-rear direction but also in the left-right direction. Even if the direction is close to both sides, it is possible to receive well.
【0008】[0008]
【実施例】以下、図面を参照して本発明の一実施例を説
明する。図1は本発明の一実施例に係るUHF及びVH
F用室内アンテナの正面側斜視図、図2は背面側斜視図
である。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows a UHF and VH according to an embodiment of the present invention.
FIG. 2 is a front perspective view of the F indoor antenna, and FIG. 2 is a rear perspective view thereof.
【0009】図1及び図2において、1は合成樹脂等の
絶縁材により略半球状に形成されたアンテナ基台で、こ
のアンテナ基台1の中央部にアンテナ支持柱2が設けら
れる。このアンテナ支持柱2には、絶縁材により形成さ
れたUHFアンテナ用のアンテナ保持部材3が角度調整
機構(図示せず)を介して装着される。この角度調整機
構は、アンテナ保持部材3を例えば垂直、15°、30
°の位置に調整できるようになっている。上記アンテナ
保持部材3は、室内インテリアと調和させるために意匠
的に考慮した形状、例えばパラボラ型に形成し、その前
面中央部に突状体3aを設けている。上記アンテナ保持
部材3は、直径が例えば18cm〜25cm程度の大き
さに形成される。In FIGS. 1 and 2, reference numeral 1 denotes an antenna base which is formed in a substantially hemispherical shape from an insulating material such as synthetic resin, and an antenna support column 2 is provided at the center of the antenna base 1. An antenna holding member 3 for a UHF antenna, which is made of an insulating material, is attached to the antenna support column 2 via an angle adjusting mechanism (not shown). In this angle adjusting mechanism, the antenna holding member 3 is, for example, vertical, 15 °, 30
It can be adjusted to the ° position. The antenna holding member 3 is formed in a shape which is designed in consideration of harmony with the interior of the room, for example, a parabolic shape, and a protrusion 3a is provided at the center of the front surface thereof. The antenna holding member 3 is formed to have a diameter of, for example, about 18 cm to 25 cm.
【0010】上記アンテナ保持部材3には、その背面に
図2及び図3(a)に示すようにT字状の溝4が形成さ
れ、この溝4内にダイポールアンテナ5a,5bが押し
込み固定される。このアンテナ保持部材3の背面に沿っ
て設けられたダイポールアンテナ5a,5bは、側面形
状が図3(b)に示すように湾曲し、また、前後面形状
が図3(c)に示すようにT字状に形成される。A T-shaped groove 4 is formed on the back surface of the antenna holding member 3 as shown in FIGS. 2 and 3 (a), and the dipole antennas 5a and 5b are pushed and fixed in the groove 4. It The dipole antennas 5a and 5b provided along the back surface of the antenna holding member 3 are curved in side surface shape as shown in FIG. 3 (b), and in front and rear surface shapes as shown in FIG. 3 (c). It is formed in a T shape.
【0011】また、上記アンテナ基台1上には、アンテ
ナ保持部材3より後方位置に球座6a,6bを介してV
HF用ロッドアンテナ7a,7bが設けられる。このロ
ッドアンテナ7a,7bは、長さを任意に調整できると
共に、上記球座6a,6bにより任意の方向に回動して
位置を調整できるようになっている。Further, on the antenna base 1, a V position is provided at a position rearward of the antenna holding member 3 via ball seats 6a and 6b.
HF rod antennas 7a and 7b are provided. The rod antennas 7a and 7b can be arbitrarily adjusted in length and can be rotated in arbitrary directions by the ball seats 6a and 6b to be adjusted in position.
【0012】更に、上記アンテナ基台1上には、正面側
にアンテナ切換つまみ8が設けられる。このアンテナ切
換つまみ8は、アンテナ基台1内に設けられたアンテナ
切換スイッチ(図示せず)に装着され、ダイポールアン
テナ5a,5bとロッドアンテナ7a,7bとの切換え
を行なう。アンテナ基台1内には、上記アンテナ切換ス
イッチと共に必要に応じて高周波増幅器が設けられる。
上記アンテナ切換スイッチにより選択された信号、ある
いは高周波増幅器により増幅された信号は、同軸ケーブ
ル11により外部に取り出され、分波器12でVHFと
UHFの信号に分波され、VHFフィーダ13、UHF
フィーダ14を介してテレビ受信機(図示せず)に導か
れる。上記同軸ケーブル11は、アンテナ基台1の背面
部に設けられた端子部15より外部に導出される。ま
た、アンテナ基台1内に高周波増幅器が設けられる場合
は、上記端子部15にアダプタ接続端子16が設けら
れ、このアダプタ接続端子16にDCアダプタ(図示せ
ず)が接続されて高周波増幅器を動作させるための直流
電圧が供給される。Further, an antenna switching knob 8 is provided on the front side of the antenna base 1. The antenna switching knob 8 is attached to an antenna switching switch (not shown) provided in the antenna base 1 to switch between the dipole antennas 5a and 5b and the rod antennas 7a and 7b. In the antenna base 1, a high frequency amplifier is provided as needed together with the antenna changeover switch.
The signal selected by the antenna changeover switch or the signal amplified by the high frequency amplifier is taken out to the outside by the coaxial cable 11 and is demultiplexed by the demultiplexer 12 into VHF and UHF signals, and the VHF feeder 13 and UHF
It is led to a television receiver (not shown) via the feeder 14. The coaxial cable 11 is led out to the outside from a terminal portion 15 provided on the back surface of the antenna base 1. When a high frequency amplifier is provided in the antenna base 1, an adapter connection terminal 16 is provided in the terminal portion 15 and a DC adapter (not shown) is connected to the adapter connection terminal 16 to operate the high frequency amplifier. A DC voltage is supplied to drive it.
【0013】上記のようにUHF受信用のダイポールア
ンテナ5a,5bを前後方向に湾曲させて形成すること
により、その指向性は図4に示すように前後方向だけで
なく左右方向にも感度を有するようになる。従って、電
波到来方向がダイポールアンテナ5a,5bの両側面に
近い場合でも良好に受信することができる。By forming the UHF receiving dipole antennas 5a and 5b by bending them in the front-rear direction as described above, the directivity thereof has sensitivity not only in the front-rear direction but also in the left-right direction as shown in FIG. Like Therefore, even when the arrival direction of the radio wave is close to both side surfaces of the dipole antennas 5a and 5b, the radio wave can be received well.
【0014】上記実施例では、アンテナ保持部材3の背
面にダイポールアンテナ5a,5bを設けた場合につい
て示したが、その他,図5に示すように前後方向に湾曲
させたループアンテナ21を設けた構成としても良い。
即ち、アンテナ保持部材3の背面にループ状の溝4を形
成し、この溝4内にループアンテナ21を押し込み固定
する。このアンテナ保持部材3の背面に沿って設けられ
たループアンテナ21は、側面形状が図5(b)に示す
ように後方に湾曲し、また、前後面形状が図5(c)に
示すように左右に湾曲した形状となる。In the above embodiment, the case where the dipole antennas 5a and 5b are provided on the back surface of the antenna holding member 3 has been described. In addition, as shown in FIG. 5, the loop antenna 21 curved in the front-back direction is provided. Also good.
That is, the loop-shaped groove 4 is formed on the back surface of the antenna holding member 3, and the loop antenna 21 is pushed and fixed in the groove 4. The loop antenna 21 provided along the back surface of the antenna holding member 3 has a side surface curved backward as shown in FIG. 5B, and a front and rear surface shape as shown in FIG. 5C. The shape is curved to the left and right.
【0015】上記のようにUHF受信用のループアンテ
ナ21を前後方向に湾曲させて形成することにより、そ
の指向性は図6に示すように前後方向だけでなく左右方
向にも感度を有するようになる。By forming the UHF receiving loop antenna 21 by bending it in the front-rear direction as described above, its directivity has sensitivity not only in the front-rear direction but also in the left-right direction as shown in FIG. Become.
【0016】上記図5に示したようにループアンテナ2
1を左右対称に構成した場合には、左右方向の感度に比
較して前後方向の感度が大きいが、例えば図7に示すよ
うにループアンテナ21の半分を湾曲して形成すること
により、その指向性は図8に示すように前後左右にほぼ
均等に感度を持たせることができる。As shown in FIG. 5, the loop antenna 2
When 1 is configured symmetrically, the sensitivity in the front-back direction is higher than the sensitivity in the left-right direction. However, by forming a half of the loop antenna 21 as shown in FIG. As for the sex, as shown in FIG. 8, the sensitivity can be imparted substantially evenly in the front, rear, left and right.
【0017】図9は、上記図1及び図2に示したダイポ
ールアンテナ5a,5b、並びに図5に示したループア
ンテナ21を用いた本発明の室内アンテナによる受像テ
スト結果を、従来の平面的なループアンテナを用いた室
内アンテナによる受像テスト結果と比較して示したもの
である。FIG. 9 shows an image receiving test result by the indoor antenna of the present invention using the dipole antennas 5a and 5b shown in FIGS. 1 and 2 and the loop antenna 21 shown in FIG. It is shown in comparison with the image receiving test result by the indoor antenna using the loop antenna.
【0018】なお、この画像テストは、画像評価数字を 5 …スタジオと同等画像 4 …非常に良い 3+ …良好 3 …普通 3- …何とか我慢して見ることができる 2 …悪い 1 …受信できない とした場合について示したものである。[0018] In addition, the image test, image evaluation numbers 5 ... studio the same image 4 ... very good 3 + ... good 3 ... usually 3 - ... 2 ... can not be bad 1 ... reception can be seen to put up somehow The above shows the case.
【0019】上記図9から明らかなように本発明による
室内アンテナは、普通以上の画像評価が得られ、従来の
室内アンテナと比較して優れた特性を有している。な
お、上記実施例では、アンテナ保持部材3をパラボラ状
に形成したが、ダイポールアンテナ5a,5b若しくは
ループアンテナ21を前後方向に湾曲させた状態に保持
できるものであれば、他の形状であっても良いことは勿
論である。As is clear from FIG. 9, the indoor antenna according to the present invention has a higher than normal image evaluation and has excellent characteristics as compared with the conventional indoor antenna. Although the antenna holding member 3 is formed in a parabolic shape in the above-described embodiment, any other shape can be used as long as it can hold the dipole antennas 5a and 5b or the loop antenna 21 in the front-back direction. Of course, it is also good.
【0020】[0020]
【発明の効果】以上詳記したように本発明によれば、U
HF受信用のダイポールアンテナ、あるいはループアン
テナを前後方向に湾曲させて室内アンテナを形成してい
るので、簡単な構成で、且つ大きな占有体積を必要とせ
ず、指向性は前後方向だけでなく左右方向にも感度を持
たせることができ、電波到来方向が両側面に近い場合で
も良好に受信することができる。As described above in detail, according to the present invention, U
Since the indoor antenna is formed by bending the HF receiving dipole antenna or loop antenna in the front-back direction, it has a simple structure and does not require a large occupied volume, and the directivity is not only in the front-back direction but also in the left-right direction. Can also have sensitivity, and can receive well even when the direction of arrival of the radio wave is close to both sides.
【図1】本発明の一実施例に係る室内アンテナ前面側斜
視図。FIG. 1 is a front perspective view of an indoor antenna according to an embodiment of the present invention.
【図2】同実施例における背面側斜視図。FIG. 2 is a rear perspective view of the same embodiment.
【図3】同実施例におけるダイポールアンテナの形状説
明図。FIG. 3 is an explanatory view of the shape of a dipole antenna according to the same embodiment.
【図4】同実施例におけるダイポールアンテナの指向特
性を示す図。FIG. 4 is a diagram showing directional characteristics of a dipole antenna in the same example.
【図5】本発明の他の実施例におけるループアンテナの
形状説明図。FIG. 5 is an explanatory view of the shape of a loop antenna according to another embodiment of the present invention.
【図6】同実施例におけるループアンテナの指向特性を
示す図。FIG. 6 is a diagram showing directional characteristics of a loop antenna in the example.
【図7】ループアンテナの他の形状例を示す図。FIG. 7 is a diagram showing another example of the shape of the loop antenna.
【図8】図7のループアンテナを用いた場合の指向特性
を示す図。8 is a diagram showing directional characteristics when the loop antenna of FIG. 7 is used.
【図9】本発明による室内アンテナと従来の室内アンテ
ナによる受像テスト結果を示す図表。FIG. 9 is a chart showing image receiving test results by an indoor antenna according to the present invention and a conventional indoor antenna.
1 アンテナ基台 2 アンテナ支持柱 3 アンテナ保持部材 3a 突状体 4 溝 5a,5b ダイポールアンテナ 6a,6b 球座 7a,7b ロッドアンテナ 8 アンテナ切換つまみ 11 同軸ケーブル 12 分波器 13 VHFフィーダ 14 UHFフィーダ 15 端子部 21 ループアンテナ 1 Antenna Base 2 Antenna Support Column 3 Antenna Holding Member 3a Projection 4 Grooves 5a, 5b Dipole Antenna 6a, 6b Ball Seat 7a, 7b Rod Antenna 8 Antenna Switching Knob 11 Coaxial Cable 12 Divider 13 VHF Feeder 14 UHF Feeder 15 terminal 21 loop antenna
Claims (1)
アンテナにおいて、UHFテレビ放送受信用アンテナを
前後方向に湾曲させたダイポール状若しくはループ状の
形状として絶縁材からなる保持部材で保持することを特
徴とする室内アンテナ。1. A UHF and VHF television broadcast receiving indoor antenna, wherein the UHF television broadcast receiving antenna is held by a holding member made of an insulating material in a dipole shape or a loop shape curved in the front-rear direction. An indoor antenna to be used.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6042739A JP2675973B2 (en) | 1994-03-14 | 1994-03-14 | Indoor antenna |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6042739A JP2675973B2 (en) | 1994-03-14 | 1994-03-14 | Indoor antenna |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH07249922A true JPH07249922A (en) | 1995-09-26 |
JP2675973B2 JP2675973B2 (en) | 1997-11-12 |
Family
ID=12644400
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6042739A Expired - Fee Related JP2675973B2 (en) | 1994-03-14 | 1994-03-14 | Indoor antenna |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2675973B2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006217559A (en) * | 2004-03-16 | 2006-08-17 | Yagi Antenna Co Ltd | Broadband twin loop antenna |
US8018391B2 (en) | 2005-06-30 | 2011-09-13 | Yagi Antenna Inc. | Plate-shaped antenna having at least three planes |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS54136462A (en) * | 1978-04-13 | 1979-10-23 | Yamaguchi Masaru | Heat exchanger |
JPS56149054A (en) * | 1980-04-19 | 1981-11-18 | Ricoh Co Ltd | Device for controlling charging and exposure in copying machine |
JPS60169086A (en) * | 1983-09-21 | 1985-09-02 | オフイス・ナシオナル・デテユ−ド・エ・ドウ・ルシエルシユ・アエロスパシアル | Heat exchanger tube, heat exchanger constituted from said tube and gas turbine device with said heat exchanger |
JPH0224427U (en) * | 1988-07-29 | 1990-02-19 | ||
JPH03231503A (en) * | 1989-12-04 | 1991-10-15 | Trimble Navigation | Curved dipole element antenna |
JP3002712U (en) * | 1994-04-04 | 1994-10-04 | 有限会社竹井器物製作所 | Lid of cooking container such as pot |
-
1994
- 1994-03-14 JP JP6042739A patent/JP2675973B2/en not_active Expired - Fee Related
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS54136462A (en) * | 1978-04-13 | 1979-10-23 | Yamaguchi Masaru | Heat exchanger |
JPS56149054A (en) * | 1980-04-19 | 1981-11-18 | Ricoh Co Ltd | Device for controlling charging and exposure in copying machine |
JPS60169086A (en) * | 1983-09-21 | 1985-09-02 | オフイス・ナシオナル・デテユ−ド・エ・ドウ・ルシエルシユ・アエロスパシアル | Heat exchanger tube, heat exchanger constituted from said tube and gas turbine device with said heat exchanger |
JPH0224427U (en) * | 1988-07-29 | 1990-02-19 | ||
JPH03231503A (en) * | 1989-12-04 | 1991-10-15 | Trimble Navigation | Curved dipole element antenna |
JP3002712U (en) * | 1994-04-04 | 1994-10-04 | 有限会社竹井器物製作所 | Lid of cooking container such as pot |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006217559A (en) * | 2004-03-16 | 2006-08-17 | Yagi Antenna Co Ltd | Broadband twin loop antenna |
JP4634194B2 (en) * | 2004-03-16 | 2011-02-16 | 八木アンテナ株式会社 | Broadband twin loop antenna |
US8018391B2 (en) | 2005-06-30 | 2011-09-13 | Yagi Antenna Inc. | Plate-shaped antenna having at least three planes |
US8094084B2 (en) | 2005-06-30 | 2012-01-10 | Yagi Antenna Inc. | Omnidirectional antenna for indoor and outdoor use |
Also Published As
Publication number | Publication date |
---|---|
JP2675973B2 (en) | 1997-11-12 |
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