JP2004362947A - Deflection yoke - Google Patents

Deflection yoke Download PDF

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Publication number
JP2004362947A
JP2004362947A JP2003160269A JP2003160269A JP2004362947A JP 2004362947 A JP2004362947 A JP 2004362947A JP 2003160269 A JP2003160269 A JP 2003160269A JP 2003160269 A JP2003160269 A JP 2003160269A JP 2004362947 A JP2004362947 A JP 2004362947A
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Japan
Prior art keywords
horizontal deflection
deflection coil
bend
diameter
ray tube
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.)
Pending
Application number
JP2003160269A
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Japanese (ja)
Inventor
Yoshiharu Tanaka
喜治 田中
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP2003160269A priority Critical patent/JP2004362947A/en
Publication of JP2004362947A publication Critical patent/JP2004362947A/en
Pending legal-status Critical Current

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Abstract

<P>PROBLEM TO BE SOLVED: To provide a deflection yoke capable of reducing unevenness of image characteristics like convergence by reducing its power consumption and by making a horizontal deflection coil properly fit to an insulation frame (a positional regulation). <P>SOLUTION: A winding of a large-diameter side bend-up 10 of the horizontal deflection coil 9 is fitted into an electron gun side in an axial direction of a cathode ray tube by moving it along the curve of the cathode ray tube. Reduction of the power consumption, which can not be attained on the conventional product, is attained by forming the large-diameter side bend-up 10 into a shape of an irreducible minimum for fitting into the insulation frame (the positional regulation), and the unevenness of the image characteristics like convergence is reduced by the proper fitting (the positional regulation) of the horizontal deflection coil 9 into the insulation frame. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

【0001】
【発明の属する技術分野】
本発明は、テレビジョン受像機等の陰極線管に設置する偏向ヨークに関するものである。
【0002】
【従来の技術】
偏向ヨークは陰極線管の電子銃から射出される電子ビームを偏向させ、画面を表示させるものであり、一対の水平偏向コイルと垂直偏向コイルとフェライトコア及びこれらを保持固定する絶縁枠から構成されている(例えば特許文献1参照)。
【0003】
以下、従来の偏向ヨークについて説明する。図5は従来の水平偏向コイルの正面図、図6は従来の水平偏向コイルの側面図、図7は従来の偏向ヨークの構成を示す断面図、図8は従来の水平偏向コイルと絶縁枠の嵌合説明図、図9は従来の水平偏向コイルの大径側ベンドアップの磁力線の説明図、図10は従来の偏向ヨークの構成を示す断面図、図11は従来の水平偏向コイル(ベンドアップレス)と絶縁枠の嵌合説明図、図12は従来の水平偏向コイル有効長と大径側ベンドアップの厚み説明図である。
【0004】
図5及び図6は従来の水平偏向コイル形状を示している。水平偏向コイル1は大径側ベンドアップ2と小径側ベンドアップ3を有しており、大径側ベンドアップ2の巻線は陰極線管管軸方向の電子銃側に落とし込まれてはいない。また、図7及び図8に示すように、従来の偏向ヨークでは水平偏向コイル1と絶縁枠4の十分な嵌合(位置規制)を行う為に、水平偏向コイル1の大径側ベンドアップ2と小径側ベンドアップ3の間の空間Aを絶縁枠4の嵌合部Bに嵌め込んで位置規制を行い、コンバーゼンス等の画面特性のバラツキを抑えていた。
【0005】
【特許文献1】
特開平10−64449号公報
【0006】
【発明が解決しようとする課題】
しかしながら、図9に示すように水平偏向コイル1の大径側ベンドアップ2から生じる磁力線5は陰極線管6の電子銃7から射出される電子(ビーム)の進行方向8と同一であるため、電子(ビーム)の進行方向8の偏向に寄与しない、いわばロス分であり、これにより偏向ヨークの消費電力をロスしていた。
【0007】
また、これを解決するために図10に示すように水平偏向コイル1のベンドアップを無くした巻線(いわゆるベンドアップレス巻線)方式が採用されてきたが、ベンドアップレスにしたことで図11に示すように絶縁枠4の嵌合部Bと嵌合させる部分がなくなり、位置規制が不安定になることで組立て精度にバラツキが生じ、コンバーゼンス等の画面特性のバラツキが大きくなっていた。以上のことから、従来の偏向ヨークでは、消費電力の低減と水平偏向コイルと絶縁枠の十分な嵌合(位置規制)によるコンバーゼンス等のバラツキ低減を両立できないという課題を有していた。
【0008】
本発明は前述の従来の問題点を解決するもので、偏向ヨークの消費電力を低減させると共に水平偏向コイルと絶縁枠の十分な嵌合(位置規制)を行い、コンバーゼンス等の画面特性のバラツキを低減できる偏向ヨークを提供することを目的とする。
【0009】
【課題を解決するための手段】
上記従来の課題を解決するために本発明は、一対の水平偏向コイルと垂直偏向コイルとフェライトコア及びこれらを保持固定する絶縁枠から構成される偏向ヨークであって、水平偏向コイル大径側は鞍型であり、大径側ベンドアップの巻線が陰極線管管軸方向の電子銃側に陰極線管カーブに沿って落とし込まれ、且つベンドアップ形状が大径側ベンドアップの全周あるいは一部の範囲にある。
【0010】
本発明は上記構成によって、偏向ヨークの消費電力を低減し、且つ水平偏向コイルと絶縁枠との嵌合(位置規制)が確実にでき、コンバーゼンス等の画面特性のバラツキを低減できる。
【0011】
【発明の実施の形態】
請求項1記載の発明は、一対の水平偏向コイルと垂直偏向コイルとフェライトコア及びこれらを保持固定する絶縁枠を具備する偏向ヨークであって、水平偏向コイルは鞍型であり、大径側ベンドアップの巻線が陰極線管管軸方向の電子銃側に陰極線管カーブに沿って落とし込まれ、且つベンドアップ形状が、前記大径側ベンドアップの全周あるいは一部の範囲にある。
【0012】
請求項2記載の発明は大径側ベンドアップを用いて前記水平偏向コイルと前記絶縁枠の位置規制を行っている。
【0013】
以下、本発明の実施の形態について図面を参照して説明する。図1は本発明の一実施の形態における水平偏向コイルの正面図、図2は本発明の一実施の形態における水平偏向コイルの側面図、図3は本発明の一実施における偏向ヨークの構成を示す断面図、図4は本発明の一実施の形態における水平偏向コイルの有効長と大径側ベンドアップの厚みの説明図である。
【0014】
図1及び図2に示すように、一対の鞍型の水平偏向コイル9を巻線する際に、大径側ベンドアップ10の巻線を陰極線管管軸方向の電子銃側に陰極線管カーブに沿って落とし込んだ巻線とする。その際、図3に示すように、水平偏向コイル9の大径側ベンドアップ10は無くしてしまわず、絶縁枠4との嵌合(位置規制)に必要な最低限の形状だけ残す必要がある。11は水平偏向コイル9の小径側ベンドアップである。
【0015】
ここで偏向ヨークの消費電力について考えてみると、一般的には水平偏向コイルの有効長(電子ビームの偏向に寄与する部分)に対するベンドアップ部の形状(厚み)分が消費電力のロスを招いていると考えられている。つまり、図12に示すように、従来の水平偏向コイル1は大径側ベンドアップ2を有しており、電子ビームの偏向に寄与する水平偏向コイル有効長をC、大径側ベンドアップ部の厚みをDと仮定すると、従来の水平偏向コイル1における大径側ベンドアップ2の消費電力のロス分は下記の式(a)にて簡易的に表す事ができる。
・消費電力のロス(%)=D/(C+D)×100 ・・・(a)
例として、上記の式(a)に一般的な水平偏向コイルの数値例を代入すると、
・水平偏向コイル有効長:C = 75.0mm
・大径側ベンドアップ厚 :D = 6.5mm
・消費電力のロス = 6.5/(75.0+6.5)×100 =8.0%となり、大径側ベンドアップ部による消費電力のロス分は8%であることがわかる。そこで、図4に示すように本発明の偏向ヨークでは水平偏向コイル9を巻線する際に大径側ベンドアップ10の巻線を陰極線管管軸方向の電子銃側に陰極線管カーブに沿って落とし込んだ巻線とし、大径側ベンドアップ10は絶縁枠4との嵌合(位置規制)に必要な最低限の形状にする事で消費電力のロスを低減している。
【0016】
ここで従来の偏向ヨークと同様に本発明の偏向ヨークの水平偏向コイル有効長をC、大径側ベンドアップ部の厚みをDと仮定し、一例として上記の式(a)に数値例を代入すると、

Figure 2004362947
となる。つまり、水平偏向コイル9の大径側ベンドアップ10の厚みを水平偏向コイル有効長の4%前後になるように設定する事で従来品では成し得る事のできなかった消費電力の低減と水平偏向コイル9と絶縁枠4の十分な嵌合(位置規制)による画面特性のバラツキ低減を両立することが可能となる。
【0017】
なお、例示した従来及び本発明の水平偏向コイル有効長:C及び大径側ベンドアップ部の厚み:Dの寸法については、陰極線管の画面サイズや偏向角等によって対応する偏向ヨークの大きさや形状が各々違うため、例示した寸法に限定するものではない。
【0018】
【発明の効果】
以上のように、本発明は水平偏向コイルを巻線する際に大径側ベンドアップの巻線を陰極線管管軸方向の電子銃側に陰極線管カーブに沿って落し込み、且つ大径側ベンドアップは絶縁枠との嵌合(位置規制)に必要な最低限の形状にする事で、消費電力を低減できると共に水平偏向コイルと絶縁枠の十分な嵌合(位置規制)ができるようになり、コンバーゼンス等の画面特性のバラツキも低減できる。
【図面の簡単な説明】
【図1】本発明の一実施の形態における水平偏向コイルの正面図
【図2】本発明の一実施の形態における水平偏向コイルの側面図
【図3】本発明の一実施の形態における偏向ヨークの構成を示す断面図
【図4】本発明の一実施の形態における水平偏向コイル有効長と大径側ベンドアップの厚みの説明図
【図5】従来の水平偏向コイルの正面図
【図6】従来の水平偏向コイルの側面図
【図7】従来の偏向ヨークの構成を示す断面図
【図8】従来の水平偏向コイルと絶縁枠の嵌合説明図
【図9】従来の水平偏向コイルの大径側ベンドアップの磁力線の説明図
【図10】従来の偏向ヨークの構成を示す断面図
【図11】従来の水平偏向コイル(ベンドアップレス)と絶縁枠の嵌合説明図
【図12】従来の水平偏向コイル有効長と大径側ベンドアップの厚みの説明図
【符号の説明】
4 絶縁枠
8 電子(ビーム)の進行方向
9 水平偏向コイル
10 大径側ベンドアップ
11 小径側ベンドアップ[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a deflection yoke installed in a cathode ray tube such as a television receiver.
[0002]
[Prior art]
The deflection yoke deflects the electron beam emitted from the electron gun of the cathode ray tube to display a screen, and is composed of a pair of horizontal deflection coils, a vertical deflection coil, a ferrite core, and an insulating frame holding and fixing these. (For example, see Patent Document 1).
[0003]
Hereinafter, a conventional deflection yoke will be described. 5 is a front view of the conventional horizontal deflection coil, FIG. 6 is a side view of the conventional horizontal deflection coil, FIG. 7 is a cross-sectional view showing the configuration of the conventional deflection yoke, and FIG. FIG. 9 is an explanatory view of a magnetic field line on a large-diameter side bend-up of a conventional horizontal deflection coil, FIG. 10 is a sectional view showing a configuration of a conventional deflection yoke, and FIG. 11 is a conventional horizontal deflection coil (bend-up). FIG. 12 is an explanatory view showing the effective length of the conventional horizontal deflection coil and the thickness of the large-diameter side bend-up.
[0004]
5 and 6 show a conventional horizontal deflection coil shape. The horizontal deflection coil 1 has a large-diameter bend-up 2 and a small-diameter bend-up 3. The winding of the large-diameter bend-up 2 is not dropped to the electron gun side in the axial direction of the cathode ray tube. In addition, as shown in FIGS. 7 and 8, in the conventional deflection yoke, in order to perform a sufficient fitting (position regulation) between the horizontal deflection coil 1 and the insulating frame 4, a large-diameter bend-up 2 of the horizontal deflection coil 1 is performed. The space A between the small-diameter-side bend-up 3 and the small-diameter bend-up 3 is fitted into the fitting portion B of the insulating frame 4 to regulate the position, thereby suppressing variations in screen characteristics such as convergence.
[0005]
[Patent Document 1]
JP-A-10-64449 [0006]
[Problems to be solved by the invention]
However, as shown in FIG. 9, the lines of magnetic force 5 generated from the large-diameter side bend-up 2 of the horizontal deflection coil 1 are the same as the traveling direction 8 of the electrons (beams) emitted from the electron gun 7 of the cathode ray tube 6, This does not contribute to the deflection of the (beam) in the traveling direction 8, that is, the loss, and thus the power consumption of the deflection yoke is lost.
[0007]
In order to solve this, a winding (so-called bend-upless winding) system in which the bend-up of the horizontal deflection coil 1 is eliminated as shown in FIG. 10 has been adopted. As shown in FIG. 11, there is no portion to be fitted to the fitting portion B of the insulating frame 4, and the position regulation becomes unstable, causing variations in assembly accuracy and variations in screen characteristics such as convergence. As described above, the conventional deflection yoke has a problem that it is impossible to achieve both reduction in power consumption and reduction in variation such as convergence due to sufficient fitting (position regulation) between the horizontal deflection coil and the insulating frame.
[0008]
The present invention solves the above-mentioned conventional problems, reduces the power consumption of the deflection yoke, performs a sufficient fitting (position regulation) between the horizontal deflection coil and the insulating frame, and reduces the variation in screen characteristics such as convergence. It is an object to provide a deflection yoke that can be reduced.
[0009]
[Means for Solving the Problems]
In order to solve the above-mentioned conventional problems, the present invention provides a deflection yoke including a pair of horizontal deflection coils, a vertical deflection coil, a ferrite core, and an insulating frame for holding and fixing them, Saddle-type, large-diameter bend-up winding is dropped along the cathode ray tube curve to the electron gun side in the cathode ray tube axial direction, and the bend-up shape is the entire circumference or a part of the large-diameter bend-up. In the range.
[0010]
According to the present invention, the power consumption of the deflection yoke can be reduced, and the fitting (position regulation) between the horizontal deflection coil and the insulating frame can be reliably performed by the above configuration, so that the variation of the screen characteristics such as convergence can be reduced.
[0011]
BEST MODE FOR CARRYING OUT THE INVENTION
An invention according to claim 1 is a deflection yoke including a pair of horizontal deflection coils, a vertical deflection coil, a ferrite core, and an insulating frame for holding and fixing the same, wherein the horizontal deflection coil is a saddle type, and a large-diameter bend. The up winding is dropped along the cathode ray tube curve to the electron gun side in the cathode ray tube axial direction, and the bend up shape is in the entire circumference or a part of the large diameter bend up.
[0012]
According to a second aspect of the present invention, the position of the horizontal deflection coil and the insulating frame is regulated by using a large-diameter bend-up.
[0013]
Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a front view of a horizontal deflection coil according to one embodiment of the present invention, FIG. 2 is a side view of the horizontal deflection coil according to one embodiment of the present invention, and FIG. FIG. 4 is a sectional view showing the effective length of the horizontal deflection coil and the thickness of the large-diameter side bend-up in one embodiment of the present invention.
[0014]
As shown in FIGS. 1 and 2, when winding a pair of saddle-type horizontal deflection coils 9, the winding of the large-diameter bend-up 10 is turned to the cathode ray tube curve in the direction of the cathode ray tube axis. It is a winding dropped along. At that time, as shown in FIG. 3, the large-diameter side bend-up 10 of the horizontal deflection coil 9 is not lost, and it is necessary to leave only a minimum shape necessary for fitting (position regulation) with the insulating frame 4. . Reference numeral 11 denotes a small-diameter bend-up of the horizontal deflection coil 9.
[0015]
Considering the power consumption of the deflection yoke, the shape (thickness) of the bend-up portion with respect to the effective length of the horizontal deflection coil (the portion contributing to the deflection of the electron beam) generally causes a loss of power consumption. Is believed to be That is, as shown in FIG. 12, the conventional horizontal deflection coil 1 has a large-diameter bend-up 2, the effective length of the horizontal deflection coil contributing to electron beam deflection is C, and the large-diameter bend-up portion is Assuming that the thickness is D, the power consumption loss of the large-diameter side bend-up 2 in the conventional horizontal deflection coil 1 can be simply expressed by the following equation (a).
Power consumption loss (%) = D / (C + D) × 100 (a)
As an example, substituting a numerical example of a general horizontal deflection coil into the above equation (a),
-Effective length of horizontal deflection coil: C = 75.0 mm
・ Large-diameter side bend-up thickness: D = 6.5 mm
Power loss = 6.5 / (75.0 + 6.5) × 100 = 8.0%, indicating that the power loss due to the large-diameter bend-up section is 8%. Therefore, as shown in FIG. 4, in the deflection yoke of the present invention, when the horizontal deflection coil 9 is wound, the winding of the large-diameter bend-up 10 is moved along the cathode ray tube curve toward the electron gun side in the cathode ray tube axis direction. The large-diameter bend-up 10 is formed into the minimum shape required for fitting (position regulation) with the insulating frame 4 to reduce power consumption loss.
[0016]
Here, as in the case of the conventional deflection yoke, it is assumed that the effective length of the horizontal deflection coil of the deflection yoke of the present invention is C and the thickness of the large-diameter side bend-up portion is D, and a numerical example is substituted into the above equation (a) as an example. Then
Figure 2004362947
It becomes. That is, by setting the thickness of the large-diameter side bend-up 10 of the horizontal deflection coil 9 to be about 4% of the effective length of the horizontal deflection coil, it is possible to reduce the power consumption and reduce the power consumption which cannot be achieved by the conventional product. It is possible to achieve both reduction in variation in screen characteristics due to sufficient fitting (position regulation) between the deflection coil 9 and the insulating frame 4.
[0017]
The dimensions of the conventional horizontal deflection coil effective length: C and the thickness of the large-diameter bend-up portion: D of the present invention and the present invention are determined by the size and shape of the deflection yoke corresponding to the screen size and deflection angle of the cathode ray tube. Are not limited to the illustrated dimensions.
[0018]
【The invention's effect】
As described above, according to the present invention, when winding the horizontal deflection coil, the winding of the large-diameter bend-up is dropped along the cathode ray tube curve toward the electron gun side in the cathode ray tube axial direction, and the large-diameter bend is bent. By increasing the minimum shape required for fitting (position regulation) with the insulation frame, power consumption can be reduced and sufficient fitting (position regulation) between the horizontal deflection coil and the insulation frame can be achieved. And variations in screen characteristics such as convergence.
[Brief description of the drawings]
FIG. 1 is a front view of a horizontal deflection coil according to an embodiment of the present invention. FIG. 2 is a side view of a horizontal deflection coil according to an embodiment of the present invention. FIG. 3 is a deflection yoke according to an embodiment of the present invention. FIG. 4 is an explanatory view of an effective length of a horizontal deflection coil and a thickness of a large-diameter side bend-up according to an embodiment of the present invention. FIG. 5 is a front view of a conventional horizontal deflection coil. FIG. 7 is a cross-sectional view showing the configuration of a conventional deflection yoke. FIG. 8 is an explanatory view of fitting of a conventional horizontal deflection coil and an insulating frame. FIG. 9 is an enlarged view of a conventional horizontal deflection coil. FIG. 10 is a cross-sectional view showing the configuration of a conventional deflection yoke. FIG. 11 is an explanatory view of fitting a conventional horizontal deflection coil (bend-upless) to an insulating frame. Effective length of horizontal deflection coil and large diameter bend up Illustration of a thickness DESCRIPTION OF SYMBOLS
4 Insulating frame 8 Electron (beam) traveling direction 9 Horizontal deflection coil 10 Large-diameter bend-up 11 Small-diameter bend-up

Claims (2)

一対の水平偏向コイルと垂直偏向コイルとフェライトコア及びこれらを保持固定する絶縁枠を具備する偏向ヨークであって、水平偏向コイルは鞍型であり、大径側ベンドアップの巻線が陰極線管管軸方向の電子銃側に陰極線管カーブに沿って落とし込まれ、且つベンドアップ形状が大径側ベンドアップの全周あるいは一部の範囲にあることを特徴とする偏向ヨーク。A deflection yoke including a pair of horizontal deflection coils, a vertical deflection coil, a ferrite core, and an insulating frame for holding and fixing the same, wherein the horizontal deflection coil is a saddle type, and a winding of a large-diameter bend-up is a cathode ray tube. A deflection yoke which is dropped on the electron gun side in the axial direction along a cathode ray tube curve, and whose bend-up shape is in the entire circumference or a part of the large-diameter side bend-up. 前記大径側ベンドアップを用いて前記水平偏向コイルと前記絶縁枠の位置規制を行っていることを特徴とする請求項1記載の偏向ヨーク。2. The deflection yoke according to claim 1, wherein the position of the horizontal deflection coil and the insulating frame is regulated using the large-diameter bend-up.
JP2003160269A 2003-06-05 2003-06-05 Deflection yoke Pending JP2004362947A (en)

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JP2003160269A Pending JP2004362947A (en) 2003-06-05 2003-06-05 Deflection yoke

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