JPH0346736A - Display tube and deflecting unit fit for such display tube - Google Patents
Display tube and deflecting unit fit for such display tubeInfo
- Publication number
- JPH0346736A JPH0346736A JP18169090A JP18169090A JPH0346736A JP H0346736 A JPH0346736 A JP H0346736A JP 18169090 A JP18169090 A JP 18169090A JP 18169090 A JP18169090 A JP 18169090A JP H0346736 A JPH0346736 A JP H0346736A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic field
- display tube
- deflection
- guiding means
- deflection coil
- 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
- 230000005291 magnetic effect Effects 0.000 claims abstract description 48
- 239000011810 insulating material Substances 0.000 claims abstract description 16
- 239000000853 adhesive Substances 0.000 claims description 8
- 230000001070 adhesive effect Effects 0.000 claims description 8
- 229920003002 synthetic resin Polymers 0.000 claims description 4
- 239000000057 synthetic resin Substances 0.000 claims description 4
- 229920005830 Polyurethane Foam Polymers 0.000 claims description 3
- 239000011496 polyurethane foam Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 abstract description 4
- 230000002411 adverse Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 abstract 1
- 230000005294 ferromagnetic effect Effects 0.000 abstract 1
- 230000005672 electromagnetic field Effects 0.000 description 2
- 238000010894 electron beam technology Methods 0.000 description 2
- 238000005538 encapsulation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 206010010071 Coma Diseases 0.000 description 1
- 201000009310 astigmatism Diseases 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000003302 ferromagnetic material Substances 0.000 description 1
- LNEPOXFFQSENCJ-UHFFFAOYSA-N haloperidol Chemical compound C1CC(O)(C=2C=CC(Cl)=CC=2)CCN1CCCC(=O)C1=CC=C(F)C=C1 LNEPOXFFQSENCJ-UHFFFAOYSA-N 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 230000007704 transition Effects 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
- H01J29/46—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
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は支持体、フィールド偏向コイル、ライン偏向コ
イルおよび磁界案内手段（ｆ ｉｅｌｄ−ｇｕｉｄｉｎ
ｇｍｅａｎｓ）をもった偏向ユニットを有する表示管に
関するものである。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a support, a field deflection coil, a line deflection coil and a field-guiding means.
The present invention relates to a display tube having a deflection unit with gmeans).
本発明は更に、このような表示管に適した偏向ユニット
に関するものである。The invention further relates to a deflection unit suitable for such a display tube.
（従来の技術）
このような表示管は、白黒、カラーおよび投写形テレビ
ジョン、データ表示装置および陰極線管か使用されるそ
の他の装置に用いることかできる。BACKGROUND OF THE INVENTION Such display tubes can be used in black and white, color and projection television, data display devices and other devices in which cathode ray tubes are used.
偏向ユニットか附勢されると、該偏向ユニットは表示管
内に発生された電子ビームを偏向し、表示さるべき影像
を形成する。When the deflection unit is energized, it deflects the electron beam generated in the display tube to form an image to be displayed.
けれども成る場合には、影像の表示中に表示管か視聴者
をいらいらさせる望ましくない音を発生させることがわ
かっている。However, in some cases, the display tube has been found to produce undesirable sounds that annoy viewers during the display of images.
（発明か解決しようとする課題）
本発明は、就中、表示管の動作中の望ましくない音の発
生が少なくとも事実上阻止されるようにした表示管を得
ることをその目的とするものである。SUMMARY OF THE INVENTION It is an object of the invention, inter alia, to obtain a display tube in which the generation of undesirable sounds during operation of the display tube is at least virtually prevented. .
（課題を解決するための手段）
上記の目的を達成するために、本発明は、冒頭に記載し
たタイプの表示管において、磁界案内手段か、該磁界案
内手段か僅かしかまたは全く振動を生じないように偏向
コイルユニットに設けられたことを特徴とするものであ
る。SUMMARY OF THE INVENTION In order to achieve the above objects, the present invention provides a display tube of the type mentioned at the outset, in which the magnetic field guiding means or the magnetic field guiding means produces little or no vibration. It is characterized in that it is provided in the deflection coil unit.
本発明は次のような洞察に基づいたものである。The present invention is based on the following insight.
すなわち、望ましくない音の発生は、偏向ユニットが付
勢された時につくられる磁界が磁界案内手段を好ましく
なく振動させるという事実に大部分帰すことができる。That is, the production of undesirable sounds can be largely attributed to the fact that the magnetic field created when the deflection unit is energized causes the magnetic field guide means to vibrate undesirably.
この好ましくない音の発生は、本発明により磁界案内手
段を僅かしか振動を発生しないように設けることによっ
て殆ど除かれる。The production of this undesirable sound is largely eliminated according to the invention by providing the magnetic field guiding means in such a way that they generate only a small amount of vibration.
本発明の表示管の好ましい一実施例では、磁界案内１手
段は支持体に固定され、絶縁材料内に封入される。特に
磁界案内手段か支持体に固定された場合は、望ましくな
い振動の発生する程度かかなり大きいことは確かである
。その理由は、偏向ユニットか付勢された時に磁界案内
手段に及ぼされる力が支持体か磁界案内手段を介して振
動される程大きくなり得るということである。支持体は
、望ましくない音を増強させる共鳴ボックスとして働く
。この振動は、磁界案内手段を絶縁材料内に封入するこ
とによって十分な程度に減衰される。In a preferred embodiment of the display tube according to the invention, the magnetic field guide 1 means are fixed to a support and encapsulated within an insulating material. Particularly when the magnetic field guide means is fixed to a support, it is certain that the degree of undesirable vibrations that occur is considerable. The reason is that the force exerted on the magnetic field guiding means when the deflection unit is energized can be so great that the support is vibrated through the magnetic field guiding means. The support acts as a resonant box that intensifies unwanted sounds. This vibration is damped to a sufficient extent by encapsulating the magnetic field guiding means in an insulating material.
磁界案内手段の封入は、該磁界案内手段の周囲のスペー
ス、を絶縁材料で満たすことによって行なうのか好まし
い。この絶縁材料は硬化性樹脂であるのか好ましい。ポ
リウレタンフォーム（ｐｏｌｙｕｒｅｔｈａｎｅ ｆｏ
ａｍ）は簡単に設けることかできるので特に好適である
。The encapsulation of the magnetic field guiding means is preferably carried out by filling the space around the magnetic field guiding means with an insulating material. Preferably, this insulating material is a curable resin. polyurethane foam
am) is particularly suitable because it can be easily provided.
本発明の表示管の別の好ましい実施例では、磁界案内手
段は偏向コイルの一方に固定される。磁界案内手段は支
持体にではなく偏向コイルの一方例えばフィールド偏向
コイルに固定されるので、望ましくない振動か除かれる
。その結果、支持体は最早や共鳴ボックスとして働かな
い。固定は急速硬化接着剤を用いて行われるのが好まし
く、かくして迅速で正確な固定か得られる。In another preferred embodiment of the display tube according to the invention, the magnetic field guide means are fixed to one of the deflection coils. Since the magnetic field guiding means is not fixed to the support but to one of the deflection coils, for example to the field deflection coil, any unwanted vibrations are eliminated. As a result, the support no longer acts as a resonant box. Fixing is preferably carried out using a fast curing adhesive, thus providing a fast and precise fixing.
磁界案内手段が、フィールド偏向コイルの中央近（に、
該偏向コイルの磁界と事実上平行に、フィールド偏向コ
イルとライン偏向コイルの間に直径１互いに対向して、
僅かな振動しか発生しないように配設された本発明の別
の好ましい実施例は、影像の表示中瓶端に低いノイズ挙
動を示す。The magnetic field guiding means is located near the center of the field deflection coil.
substantially parallel to the magnetic field of the deflection coil, a diameter 1 dia. opposite each other between the field deflection coil and the line deflection coil;
Another preferred embodiment of the invention, arranged to generate only a small amount of vibration, exhibits low noise behavior at the end of the bottle during display of the image.
本発明は更に表示管の偏向ユニットに関するもので、こ
の偏向ユニットは、支持体、フィールド偏向コイル、ラ
イン偏向コイルおよび磁界案内手段を有し、磁界案内手
段か僅かな振動しか生じないように偏向ユニット内に配
設されたことを特徴とする。The invention further relates to a deflection unit for a display tube, the deflection unit comprising a support, a field deflection coil, a line deflection coil and magnetic field guiding means, the deflection unit being arranged such that only slight vibrations occur in the magnetic field guiding means. It is characterized by being placed inside.
（実施例） 以下本発明を添付の図面を参照して実施例で説明する。(Example) The invention will now be explained by way of example with reference to the accompanying drawings.
第１図は、中に電子銃システム３か取付けられたネック
部分２、円錐状容器部分４および表示窓５を有する表示
管の縦断面図である。偏向ユニット７かネック部分２か
ら容器部分４の移行部において表示管ｌ上に取付けられ
ている。この偏向ユニット７は、前端部９と後端部１０
をもった絶縁材料の支持体８を有する。これ等の端部の
間には、支持体８の内側に、電子銃システム３で発生さ
れた電子ビームを水平方向に偏向する（ライン）偏向磁
界をつくるためのライン偏向コイル１１と、支持体８の
外側に、垂直方向に（フィールド）偏向磁界をつくるた
めのフィールド偏向コイル１２とがある。これ等のコイ
ル１１と１２は強磁性材料の環状コア１４で取囲まれて
いる。FIG. 1 is a longitudinal sectional view of a display tube having a neck part 2, a conical container part 4 and a display window 5, in which an electron gun system 3 is mounted. A deflection unit 7 is mounted on the display tube l at the transition from the neck part 2 to the container part 4. This deflection unit 7 has a front end 9 and a rear end 10.
It has a support 8 of an insulating material having a . Between these ends, a line deflection coil 11 for creating a (line) deflection magnetic field for horizontally deflecting the electron beam generated by the electron gun system 3 is disposed inside the support 8, and a line deflection coil 11 is disposed inside the support 8. Outside of 8 there is a field deflection coil 12 for creating a (field) deflection field in the vertical direction. These coils 11 and 12 are surrounded by an annular core 14 of ferromagnetic material.
この実施例では、磁界案内手段１５か、フィールド偏向
コイル１２とライン偏向コイル１１の間に、該手段を支
持体８に固定することによって配設されている。磁界案
内手段１５は、該手段を絶縁材料１６内に封入すること
により僅かな振動しか生じないように配設される。材料
は、フィールド偏向コイルとライン偏向コイル間の短絡
を防ぐために絶縁性でなければならない。振動は、若し
あれば前記の絶縁材料１６で減衰される。In this embodiment, magnetic field guide means 15 are arranged between the field deflection coil 12 and the line deflection coil 11 by fixing the means to the support 8 . The magnetic field guide means 15 are arranged in such a way that only slight vibrations occur due to their encapsulation in an insulating material 16. The material must be insulating to prevent short circuits between the field and line deflection coils. Vibrations, if any, are damped by the insulating material 16 mentioned above.
本発明は、就中、許容し得る小さなコマを有する満足す
べき非点収差レベルが得られるように偏向磁界に影響を
与える役をする磁界案内手段１５に向けられたものであ
る。The invention is directed, inter alia, to a field guiding means 15 which serves to influence the deflection field in such a way that a satisfactory astigmatism level with an acceptably small coma is obtained.
好ましくは、フィールド偏向コイル１２とライン偏向コ
イル１１の間のスペースは磁界案内手段１５の場所で硬
化性合成樹脂１６で満たされ、このため磁界案内手段１
５は振動のないように効率よく配設される（第２図参照
）。第２図に示すように、磁界案内手段は、フィールド
偏向コイル１２の磁界に実質的に平行に、直径上に互い
に対向して配設された２つの軟磁性素子１７と１８で形
成されるのが好ましい。合成樹脂が硬化される前に、該
合成樹脂をフィールド偏向コイルとライン偏向コイル間
のスペースに簡単に設けることができる。ポリウレタン
フォームが特に好適である。その上、エポキシ樹脂およ
び適当な接着剤を代わりに絶縁材料として用いることが
できる。したがって、磁界案内手段を取囲む絶縁材料１
６は２つの機能をもつことができる。先ず第一に、この
材料は磁界案内手段を偏向ユニット内に固定させること
ができ、第２に、この材料はすべての振動を減衰する。Preferably, the space between the field deflection coil 12 and the line deflection coil 11 is filled with a curable synthetic resin 16 at the location of the magnetic field guiding means 15, so that the magnetic field guiding means 1
5 is efficiently arranged to avoid vibration (see Figure 2). As shown in FIG. 2, the field guiding means are formed by two soft magnetic elements 17 and 18 arranged diametrically opposite each other, substantially parallel to the magnetic field of the field deflection coil 12. is preferred. The synthetic resin can simply be applied to the space between the field and line deflection coils before it is cured. Polyurethane foams are particularly suitable. Additionally, epoxy resins and suitable adhesives can alternatively be used as insulating materials. Therefore, the insulating material 1 surrounding the magnetic field guiding means
6 can have two functions. First of all, this material allows the magnetic field guide means to be fixed in the deflection unit, and secondly, this material damps all vibrations.
その結果、影像か表示された時に表示管内の望ましくな
い音の発生か殆ど除かれる。As a result, the generation of undesirable sounds within the display tube when images are displayed is largely eliminated.
第３図は、磁界案内手段１５が偏向コイルの一方、この
場合にはライン偏向コイル１１に直接に固定された偏向
ユニット７の縦断面図である。好ましくは、磁界案内手
段をライン偏向コイル１１に固定するのに急速硬化接着
剤例えばＵ■−硬化接着剤が用いられる。電磁界に規定
通りの影響を与えることかできるように、偏向コイルに
対して正確に調節された磁界案内手段１５の位置を迅速
に固定することか可能でなければならない。これは急速
硬化接着剤の使用によって達成される。FIG. 3 is a longitudinal sectional view of the deflection unit 7 in which the magnetic field guide means 15 are fixed directly to one of the deflection coils, in this case the line deflection coil 11. Preferably, a rapid curing adhesive, such as a U-curing adhesive, is used to secure the magnetic field guide means to the line deflection coil 11. In order to be able to influence the electromagnetic field in a defined manner, it must be possible to quickly fix a precisely adjusted position of the field guiding means 15 relative to the deflection coil. This is achieved through the use of fast curing adhesives.
代わりにそれ程速く硬化しない接着剤の使用も可能であ
るが、このことは、接着剤が硬化して位置が固定される
迄磁界案内手段を偏向コイルに対する所望位置に長い時
間保持せねばならないことを意味する。Alternatively, it is possible to use adhesives that do not cure as quickly, but this means that the field guide means must be held in the desired position relative to the deflection coils for a longer period of time until the adhesive has cured and the position is fixed. means.
磁界案内手段を偏向コイルに固定する付加的な利点は、
振動の場合に磁界案内手段と偏向コイルの位置決めか相
互に対して変わることかないとういことである。その結
果、発生された電磁界は振動が起きた時に不変に保たれ
る。したかって、表示管で表示される影像は、磁界案内
手段と偏向コイルの望ましくないずれの結果の悪影響を
殆ど受けない。An additional advantage of fixing the magnetic field guide means to the deflection coil is that
In the case of vibrations, the positioning of the magnetic field guide means and the deflection coils relative to each other does not change. As a result, the generated electromagnetic field remains unchanged when vibrations occur. The image displayed on the display tube is therefore less affected by any undesirable consequences of the magnetic field guide means and the deflection coils.
第１図は本発明の表示管の一実施例を示す一部断面側面
図、
第２図は本発明の別の実施例を示す第１図の■−■の場
所における断面図、
第３図は磁界案内手段を偏向コイルの一方に取付けた別
の実施例を示す偏向ユニットの縦断面図である。
８・・・支持体
１１・・・ライン偏向コイル
１２・・・フィールド偏向コイル
１５・・・磁界案内手段
１６・・・絶縁材料
１７・・・軟磁性素子Fig. 1 is a partially sectional side view showing one embodiment of the display tube of the present invention; Fig. 2 is a sectional view taken along the line ■-■ in Fig. 1 showing another embodiment of the invention; Fig. 3; FIG. 3 is a longitudinal sectional view of a deflection unit showing another embodiment in which a magnetic field guiding means is attached to one side of the deflection coil. 8...Support body 11...Line deflection coil 12...Field deflection coil 15...Magnetic field guide means 16...Insulating material 17...Soft magnetic element
Claims (1)
および磁界案内手段をもった偏向ユニットを有する表示
管において、磁界案内手段は、該磁界案内手段が僅かし
かまたは全く振動を生じないように偏向コイルユニット
に設けられたことを特徴とする表示管。 ２、磁界案内手段は支持体に固定され、絶縁材料内に封
入された請求項１記載の表示管。３、磁界案内手段の周
囲のスペースは絶縁材料で満たされた請求項２記載の表
示管。 ４、絶縁材料は硬化性合成樹脂である請求項２または３
記載の表示管。 ５、硬化性合成樹脂はポリウレタンフォームである請求
項４記載の表示管。 ６、磁界案内手段は偏向コイルの一方に固定された請求
項１記載の表示管。 ７、磁界案内手段は急速硬化接着剤によって偏向コイル
の一方に固定された請求項６記載の表示管。 ８、磁界案内手段は、フィールド偏向コイルの中央近く
に、該偏向コイルの磁界と事実上平行に、フィールド偏
向コイルとライン偏向コイルの間に直径上互いに対向し
て、僅かな振動しか発生しないように配設された請求項
１乃至７の何れか１項記載の表示管。 ９、支持体、フィールド偏向コイル、ライン偏向コイル
および磁界案内手段を有し、磁界案内手段は僅かな振動
しか発生しないように偏向ユニット内に配設されたこと
を特徴とする請求項１乃至８の何れか１項記載の表示管
に適した偏向ユニット。[Claims] 1. In a display tube having a deflection unit having a support, a field deflection coil, a line deflection coil and a magnetic field guiding means, the magnetic field guiding means is arranged so that the magnetic field guiding means causes little or no vibration. A display tube characterized in that the display tube is provided in a deflection coil unit so as not to be damaged. 2. A display tube according to claim 1, wherein the magnetic field guiding means is fixed to the support and encapsulated within an insulating material. 3. The display tube according to claim 2, wherein the space around the magnetic field guiding means is filled with an insulating material. 4. Claim 2 or 3, wherein the insulating material is a curable synthetic resin.
Display tube as described. 5. The display tube according to claim 4, wherein the curable synthetic resin is polyurethane foam. 6. The display tube according to claim 1, wherein the magnetic field guide means is fixed to one of the deflection coils. 7. A display tube according to claim 6, wherein the magnetic field guiding means is fixed to one of the deflection coils by a quick-curing adhesive. 8. The magnetic field guiding means is arranged near the center of the field deflection coil, substantially parallel to the magnetic field of the deflection coil, and diametrically opposed to each other between the field deflection coil and the line deflection coil so as to generate only slight vibrations. 8. The display tube according to claim 1, wherein the display tube is arranged in a. 9. Claims 1 to 8, comprising a support, a field deflection coil, a line deflection coil, and a magnetic field guiding means, the magnetic field guiding means being arranged within the deflection unit so as to generate only slight vibrations. A deflection unit suitable for the display tube described in any one of the above.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL8901820 | 1989-07-14 | ||
| NL8901820A NL8901820A (en) | 1989-07-14 | 1989-07-14 | CRT for TV or graphics display - has deflection assembly damped against vibration by insulated carrier |
| NL9000373 | 1990-02-16 | ||
| NL9000373A NL9000373A (en) | 1989-07-14 | 1990-02-16 | PICTURE TUBE AND DEFLECTOR SUITABLE FOR SUCH A PICTURE TUBE. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0346736A true JPH0346736A (en) | 1991-02-28 |
| JP3278692B2 JP3278692B2 (en) | 2002-04-30 |
Family
ID=26646554
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18169090A Expired - Fee Related JP3278692B2 (en) | 1989-07-14 | 1990-07-11 | Display tubes and deflection units suitable for such display tubes |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0408139B1 (en) |
| JP (1) | JP3278692B2 (en) |
| DE (1) | DE69004171T2 (en) |
| NL (1) | NL9000373A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE1007166A3 (en) * | 1993-05-13 | 1995-04-11 | Philips Electronics Nv | TUBE WITH deflection. |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL8601803A (en) * | 1986-07-10 | 1988-02-01 | Philips Nv | COLOR IMAGE TUBE WITH ASTIGMATIC CORRECTIVE AGENTS. |
-
1990
- 1990-02-16 NL NL9000373A patent/NL9000373A/en not_active Application Discontinuation
- 1990-07-09 DE DE1990604171 patent/DE69004171T2/en not_active Expired - Fee Related
- 1990-07-09 EP EP19900201839 patent/EP0408139B1/en not_active Expired - Lifetime
- 1990-07-11 JP JP18169090A patent/JP3278692B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP3278692B2 (en) | 2002-04-30 |
| EP0408139A3 (en) | 1991-09-11 |
| DE69004171T2 (en) | 1994-05-05 |
| DE69004171D1 (en) | 1993-12-02 |
| EP0408139A2 (en) | 1991-01-16 |
| NL9000373A (en) | 1991-02-01 |
| EP0408139B1 (en) | 1993-10-27 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |