JPS62211839A - Useless radiation preventer - Google Patents
Useless radiation preventerInfo
- Publication number
- JPS62211839A JPS62211839A JP61056338A JP5633886A JPS62211839A JP S62211839 A JPS62211839 A JP S62211839A JP 61056338 A JP61056338 A JP 61056338A JP 5633886 A JP5633886 A JP 5633886A JP S62211839 A JPS62211839 A JP S62211839A
- Authority
- JP
- Japan
- Prior art keywords
- auxiliary coil
- unnecessary radiation
- useless radiation
- coil
- 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.)
- Pending
Links
- 230000005855 radiation Effects 0.000 title claims abstract description 32
- 230000002265 prevention Effects 0.000 claims description 11
- 230000000694 effects Effects 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
- H01J29/02—Electrodes; Screens; Mounting, supporting, spacing or insulating thereof
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
- H01J29/003—Arrangements for eliminating unwanted electromagnetic effects, e.g. demagnetisation arrangements, shielding coils
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
- H01J29/46—Arrangements of electrodes and associated parts for generating or controlling the ray or beam, e.g. electron-optical arrangement
- H01J29/70—Arrangements for deflecting ray or beam
- H01J29/72—Arrangements for deflecting ray or beam along one straight line or along two perpendicular straight lines
- H01J29/76—Deflecting by magnetic fields only
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2229/00—Details of cathode ray tubes or electron beam tubes
- H01J2229/0007—Elimination of unwanted or stray electromagnetic effects
- H01J2229/0015—Preventing or cancelling fields leaving the enclosure
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Electrodes For Cathode-Ray Tubes (AREA)
- Details Of Television Scanning (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
- Video Image Reproduction Devices For Color Tv Systems (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は、陰極線管表示装置の不要輻射レベルを低減
させる不要輻射防止装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an unnecessary radiation prevention device for reducing the unnecessary radiation level of a cathode ray tube display device.
例えば、西独Ｖ Ｄ Ｅ （Ｖｅｒｂａｎｄ Ｄｅｕｔ
ｓｃｈｅｒＥｌｅｋｔｏｒｏｔｅｃｈｎｉｋｅｒ ）規
格で要求される不要輻射規制周波数は、ｌ０Ｋ−以上と
なっており、陰極線管表示装置では、水平偏向電流によ
り発生する不要輻射が・問題となる。For example, West Germany VDE (Verband Deut
The unnecessary radiation regulation frequency required by the Scher Elektorotechniker (Scher Elektorotechniker) standard is 10K- or more, and unnecessary radiation generated by horizontal deflection current becomes a problem in cathode ray tube display devices.
不要輻射は、水平偏向電流が流れる偏向ヨーク、フライ
バックトランス、水平幅調整コイル、および水平直線性
調整コイルの漏れ磁界がその原因となるが、外部への不
要輻射量のうち、偏向ヨークが約７０％、フライバック
トランスが約２０％、その他の水平幅調整コイルなどが
約１０％の割合を占めている。Unwanted radiation is caused by leakage magnetic fields from the deflection yoke through which the horizontal deflection current flows, the flyback transformer, the horizontal width adjustment coil, and the horizontal linearity adjustment coil. Of the amount of unnecessary radiation to the outside, the deflection yoke accounts for approximately 70%, flyback transformers account for about 20%, and other horizontal width adjustment coils account for about 10%.
第６図は、従来の不要輻射防止装置を備えた陰極線管表
示装置の一部分解斜視図で、（１）はシャーシ、（２）
は陰極線管、（３）は偏向ヨーク、（４）はフライバッ
クトランス（以下、ＦＢＴと略記する。）で、図示しな
い水平幅調整コイルなどの不要輻射発生・源とともに、
良導電性の金属板または磁性体で形成されている放熱板
（５）、カバー（６）およびシャーシ（１）でとり囲み
、偏向ヨーク（３）、ＦＢＴその他の水平偏向電流が°
流れる構成部品から輻射される漏れ磁界を内部に閉じ込
めることにより、外部への不要輻射レベルの低減を図っ
ていた。FIG. 6 is a partially exploded perspective view of a cathode ray tube display device equipped with a conventional unnecessary radiation prevention device, in which (1) is the chassis, (2)
is a cathode ray tube, (3) is a deflection yoke, and (4) is a flyback transformer (hereinafter abbreviated as FBT), along with unnecessary radiation sources such as horizontal width adjustment coils (not shown).
Surrounded by a heat sink (5), cover (6) and chassis (1) made of a highly conductive metal plate or magnetic material, the deflection yoke (3), FBT and other horizontal deflection current
By confining leakage magnetic fields radiated from flowing components, the level of unnecessary radiation to the outside was reduced.
従来の不要輻射防止装置は、磁・気遮蔽板で不要輻射発
生源をとり囲む構成としているので、表示装置の構造上
に大きな制約をうけるばかりでなく、装置の放熱が悪く
なるという問題点があり、さらにコスト高になるという
問題点があった。Conventional unnecessary radiation prevention devices have a structure in which the source of unnecessary radiation is surrounded by a magnetic/magnetic shielding plate, which not only imposes significant restrictions on the structure of the display device, but also poses the problem of poor heat dissipation from the device. However, there was a problem in that the cost was further increased.
この発明は上記のような問題点を屏消するためになされ
たもので、磁気遮蔽板で囲むことなく、安価に構成でき
る不要輻射防止装置を得ることを目的とする。This invention was made to eliminate the above-mentioned problems, and aims to provide an unnecessary radiation prevention device that can be constructed at low cost without surrounding it with a magnetic shielding plate.
この発明に係る不要輻射防止装置は、陰極線管表示装置
の筐体内に所望の位置と向きに設定状態が変えられるよ
うに補助コイルを保持し、陰極線管の偏向ヨークに流れ
る高周波偏向電流を上記補助コイルに通電する構成とし
たものである。The unnecessary radiation prevention device according to the present invention holds an auxiliary coil in the housing of a cathode ray tube display device so that the setting state can be changed to a desired position and orientation, and the high-frequency deflection current flowing through the deflection yoke of the cathode ray tube is auxiliary. The structure is such that the coil is energized.
補助コイルは、高周波偏向周波数の磁束を発生し、陰極
線管表示装置の高周波偏向電流が流れる偏向ヨーク、フ
ライバックトランス等の構成部品から出る不要輻射のレ
ベルを打ち消すように作用する。このため、当該陰極線
管表示装置の不要輻射レベルが低減する。The auxiliary coil generates magnetic flux at a high frequency deflection frequency and acts to cancel the level of unnecessary radiation emitted from components such as the deflection yoke and flyback transformer through which the high frequency deflection current of the cathode ray tube display device flows. Therefore, the unnecessary radiation level of the cathode ray tube display device is reduced.
第１図はこの発明の一実施例の斜視図で、筐体の後カバ
ーを取除いて示している。図において、（７）は筐体、
（８）は筐体（７）内の所望の位置に、所望の向きでも
って配設されている補助コイルで、例えば直径１２ｃｍ
の円形に５回埋度巻かれており、第３図に示すように、
偏向ヨーク（３）の水平偏向コイル（９）と例えば直列
に接続されて水平偏向電流が通電される。FIG. 1 is a perspective view of one embodiment of the invention, with the rear cover of the housing removed. In the figure, (7) is the casing;
(8) is an auxiliary coil arranged at a desired position in the housing (7) in a desired direction, and has a diameter of, for example, 12 cm.
It is wrapped five times in a circular shape, as shown in Figure 3.
It is connected, for example, in series with the horizontal deflection coil (9) of the deflection yoke (3), and a horizontal deflection current is applied thereto.
第２図は補助コイル（８）を、偏向ヨーク（３）に取付
けた例を示す図で、同図（ａ）は側面図、同図（ｂ）は
ｂ−ｂ線矢視背面図である。図において、６０は偏向ヨ
ーク（３）の支持基体を構成しているセパレータ、αＤ
は補助コイル（８）を保持し、一端がセパレータα０に
°固着されている保持部材で、例えば合成樹脂板で形成
されている補助コイル取付部（１１ａ）と、アルミニウ
ム板で形成されている取付脚（ｌｌｂ）とで構成されて
おり、補助コイル（８）と保持部材αυとで不要輻射防
止装置（２）を構成しており、長孔（ｌｉｅ）をとおし
てねじ（ト）でセパルータαＱに取付けられている。Figure 2 shows an example in which the auxiliary coil (8) is attached to the deflection yoke (3), where (a) is a side view and (b) is a rear view taken along the line bb. . In the figure, 60 is a separator that constitutes the support base of the deflection yoke (3), αD
is a holding member that holds the auxiliary coil (8) and has one end fixed to the separator α0; for example, the auxiliary coil mounting part (11a) is made of a synthetic resin plate, and the mounting part is made of an aluminum plate. The auxiliary coil (8) and the holding member αυ constitute an unnecessary radiation prevention device (2). installed on.
この不要輻射防止装置（２）は、取付脚（ｌｌｂ）の取
付位置の貰さを変え、また、脚を曲げることによって補
助コイル（８）の位置および向きが変えられるように構
成されている。This unnecessary radiation prevention device (2) is configured so that the mounting position of the mounting leg (llb) can be changed, and the position and direction of the auxiliary coil (8) can be changed by bending the leg.
この不要輻射防止装置（２）は、当該陰極線管表示装置
の不要輻射レベルを計測しながら、°補助コイル（８）
の位置および向きを調節して、もっとも不要輻射レベル
の低い位置、向きに設定することにより、不要輻射レベ
ルを大幅に低減させることができる。This unnecessary radiation prevention device (2) measures the unnecessary radiation level of the cathode ray tube display device, while the auxiliary coil (8)
By adjusting the position and orientation of and setting the position and orientation to the position and orientation with the lowest unnecessary radiation level, it is possible to significantly reduce the unnecessary radiation level.
なお、補助コイル（８）に並列接続された可変抵抗器な
どの通電量調節装置を設け、補助コイル（８）への通電
量を調節する構成としてもよい。Note that a configuration may be adopted in which an energization amount adjusting device such as a variable resistor connected in parallel to the auxiliary coil (8) is provided to adjust the amount of energization to the auxiliary coil (8).
なお、上記実施例では、偏向ヨーク（３）に補助コイル
（８）を取付けた例を示したが、シャーシ（１）の上面
、または筐体（７）の内面に取付けてもよい。In the above embodiment, the auxiliary coil (8) is attached to the deflection yoke (3), but the auxiliary coil (8) may be attached to the top surface of the chassis (1) or the inner surface of the casing (7).
この発明は、高周波偏向電流が通電される補助コイルを
、陰極線管表示装置の筐体内に配設し、その補助コイル
の位置および向きを、不要輻射レベルが最低となる位置
および向きに調節しうるように構成したものであるから
、簡単な構成でもって陰極線管表示装置の不要輻射レベ
ルを大幅に低減できる効果がある。According to the present invention, an auxiliary coil to which a high-frequency deflection current is applied is disposed within the casing of a cathode ray tube display device, and the position and orientation of the auxiliary coil can be adjusted to the position and orientation that minimizes the level of unnecessary radiation. With this configuration, the unnecessary radiation level of the cathode ray tube display device can be significantly reduced with a simple configuration.
第１図はこの発明の概略的構成を示す陰極線管表示装置
の斜視図、第２図はこの発明の一実施例を示す図で、同
図（ａ）は側面図、同図（ロ）は同図（ａ）のｂ−ｂ線
矢視背面図、第３図は補助コイルの接続回路図、第４図
は従来の不要輻射防止装置を備えた陰極線管表示装置の
一部分解斜視図である。
（２）・・・陰極線管、（３）・・・偏向ヨーク、（７
）・・・筐体、（８）・・・補助コイル、（９）・・・
水平偏向コイル、Ｑυ・・・保持部材、（６）・・・不
要輻射防止装置。
なお１１図中、同一符号はそれぞれ同一、または相当“
部分を示す。FIG. 1 is a perspective view of a cathode ray tube display device showing a schematic configuration of the present invention, and FIG. 2 is a view showing an embodiment of the present invention, where (a) is a side view and (b) is a side view. 3 is a connection circuit diagram of an auxiliary coil, and FIG. 4 is a partially exploded perspective view of a cathode ray tube display device equipped with a conventional unnecessary radiation prevention device. . (2)...Cathode ray tube, (3)...Deflection yoke, (7
)...Casing, (8)...Auxiliary coil, (9)...
Horizontal deflection coil, Qυ...holding member, (6)...unnecessary radiation prevention device. In Figure 11, the same symbols are the same or equivalent.
Show parts.
Claims (1)
ークに流れる高周波偏向電流が通電される補助コイルと
、この補助コイルを上記筐体内の所望の位置および向き
でもつて保持する保持部材とで構成されてなる不要輻射
防止装置。(1) An auxiliary coil disposed within the casing of the cathode ray tube display device and to which a high-frequency deflection current flowing through the deflection yoke is energized, and a holding member that holds the auxiliary coil at a desired position and orientation within the casing. An unnecessary radiation prevention device consisting of:
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61056338A JPS62211839A (en) | 1986-03-12 | 1986-03-12 | Useless radiation preventer |
| KR1019870000195A KR900004342B1 (en) | 1986-03-12 | 1987-01-13 | Protecting device of unnecessary radiation |
| DE19873707829 DE3707829A1 (en) | 1986-03-12 | 1987-03-11 | Device for supressing undesired radiation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61056338A JPS62211839A (en) | 1986-03-12 | 1986-03-12 | Useless radiation preventer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62211839A true JPS62211839A (en) | 1987-09-17 |
Family
ID=13024425
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61056338A Pending JPS62211839A (en) | 1986-03-12 | 1986-03-12 | Useless radiation preventer |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JPS62211839A (en) |
| KR (1) | KR900004342B1 (en) |
| DE (1) | DE3707829A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0485559U (en) * | 1990-11-29 | 1992-07-24 | ||
| JPH04102548U (en) * | 1991-02-04 | 1992-09-03 | 株式会社村田製作所 | deflection yoke device |
| DE19755774A1 (en) * | 1997-12-16 | 1999-06-17 | Cit Alcatel | Method and arrangement for suppressing interference signals in coaxial cables |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59197198A (en) * | 1983-04-22 | 1984-11-08 | 株式会社トーキン | Magnetic shielding device |
| JPS62100935A (en) * | 1985-10-25 | 1987-05-11 | フィリップス エレクトロニクス ネムローゼ フェンノートシャップ | Image display device |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2345290A1 (en) * | 1972-09-27 | 1974-03-28 | Ceskoslovenska Akademie Ved | ARRANGEMENT FOR LIMITING AN INTERFERING MAGNETIC ALTERNATING FIELD |
| DE2705515C2 (en) * | 1977-02-10 | 1985-11-21 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | Image display device with a picture tube and a mains transformer |
| US4306253A (en) * | 1979-01-25 | 1981-12-15 | Mitsubishi Denki Kabushiki Kaisha | Supporting device for a picture tube |
-
1986
- 1986-03-12 JP JP61056338A patent/JPS62211839A/en active Pending
-
1987
- 1987-01-13 KR KR1019870000195A patent/KR900004342B1/en not_active IP Right Cessation
- 1987-03-11 DE DE19873707829 patent/DE3707829A1/en not_active Ceased
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59197198A (en) * | 1983-04-22 | 1984-11-08 | 株式会社トーキン | Magnetic shielding device |
| JPS62100935A (en) * | 1985-10-25 | 1987-05-11 | フィリップス エレクトロニクス ネムローゼ フェンノートシャップ | Image display device |
Also Published As
| Publication number | Publication date |
|---|---|
| KR900004342B1 (en) | 1990-06-22 |
| KR870009436A (en) | 1987-10-26 |
| DE3707829A1 (en) | 1987-09-24 |
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