JPH0757646A - Color selecting electrode for color cathode-ray tube - Google Patents
Color selecting electrode for color cathode-ray tubeInfo
- Publication number
- JPH0757646A JPH0757646A JP22379793A JP22379793A JPH0757646A JP H0757646 A JPH0757646 A JP H0757646A JP 22379793 A JP22379793 A JP 22379793A JP 22379793 A JP22379793 A JP 22379793A JP H0757646 A JPH0757646 A JP H0757646A
- Authority
- JP
- Japan
- Prior art keywords
- ray tube
- color
- metal strip
- internal stress
- vibration
- 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
Landscapes
- Electrodes For Cathode-Ray Tubes (AREA)
Abstract
Description
【0001】[0001]
【産業上の利用分野】本発明は、カラー陰極線管の色選
別電極、特に多数の金属細条がその間にスリットが生じ
るように配列されたグリッド構体を張架してなるカラー
陰極線管の色選別電極に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a color selection electrode for a color cathode ray tube, and more particularly, a color selection electrode for a color cathode ray tube formed by stretching a grid structure in which a large number of metal strips are arranged so that slits are formed therebetween. Regarding electrodes.
【0002】[0002]
【従来の技術】トリニトロン(登録商標)方式のカラー
陰極線管は、例えば特開昭62−188132号公報に
より紹介されているように、多数の金属細条を略垂直方
向に向け所定ピッチをもって隣接金属細条間に電子ビー
ム透過用スリットが形成されるように水平方向に配設し
たグリッド構体(いわゆるアパーチャーグリル)を枠状
の上下一対の支持部材間に張架した色選別電極を有して
いる。2. Description of the Related Art A color cathode ray tube of the Trinitron (registered trademark) type has a large number of metal strips which are adjacent to each other at a predetermined pitch with a plurality of metal strips extending in a substantially vertical direction, as disclosed in, for example, Japanese Patent Application Laid-Open No. 62-188132. It has a color selection electrode in which a grid structure (a so-called aperture grill) horizontally arranged so that electron beam transmitting slits are formed between the strips is stretched between a pair of upper and lower frame-shaped supporting members. .
【0003】このようなトリニトロン方式のカラー陰極
線管は縦格子状のアパーチャーグリルにより色選別する
ので色ずれが起りにくいという利点を有し、またビーム
の透過率が高いので画面が明るい等の利点を有する。Such a trinitron type color cathode ray tube has an advantage that a color shift is unlikely to occur because color selection is performed by an aperture grill in the form of a vertical lattice, and that the screen has a bright screen because of its high beam transmittance. Have.
【0004】しかしながら、縦格子状のアパーチャーグ
リルは、それを構成する金属細条が細長く、各隣接金属
細条間に長いスリットが存在する関係上、金属細条がス
ピーカからの音等によって振動し易く、振動を抑制する
措置を講じる必要がある。図4(A)、(B)は振動の
伝達経路の説明図で、(A)は正面図、(B)は側面図
である。同図において、aはスピーカ、bはカラー陰極
線管、cはキャビネット、dはCRTホルダ、eはフレ
ーム、gはパネル、hはピン、iは金属細条、fは支持
系である。However, in the vertical grille-shaped aperture grill, the metal strips constituting the vertical grille are elongated and there are long slits between adjacent metal strips. Therefore, the metal strips vibrate due to sound from the speaker or the like. It is necessary to take measures to suppress vibration easily. 4A and 4B are explanatory views of the transmission path of vibration, FIG. 4A is a front view, and FIG. 4B is a side view. In the figure, a is a speaker, b is a color cathode ray tube, c is a cabinet, d is a CRT holder, e is a frame, g is a panel, h is a pin, i is a metal strip, and f is a support system.
【0005】ところで、スピーカaから発生した音によ
る振動は、矢印jに示すようにキャビネットcを介して
CRTホルダdに伝わり、更にCRTホルダdから陰極
線管のファンネルを介してパネルg、ピンh、支持系
f、フレームeを経て金属細条iに伝わる。また、スピ
ーカa以外の外部からの音による空気振動は、キャビネ
ットを介することなく陰極線管のファンネルに直接伝わ
り、パネルg、ピンh、支持系f、フレームeを経て金
属細条iに伝わる。また、例えばビジネスコンピュータ
やオフィスコンピュータのディスプレイとしてカラー陰
極線管を用いる場合は、入力キーボードやマウス等を操
作することに伴って生じる振動も金属細条に伝わる。そ
して、かかる金属細条の振動は色ずれ、画面乱れをもた
らすので抑制する必要性があるのである。従来におい
て、この金属細条の振動の抑制は共振周波数を例えば1
50Hz以上というような一定値以上になるようにする
ことによって行っていた。By the way, the vibration due to the sound generated from the speaker a is transmitted to the CRT holder d through the cabinet c as shown by an arrow j, and further, from the CRT holder d through the funnel of the cathode ray tube to the panel g, the pin h, It is transmitted to the metal strip i through the support system f and the frame e. Further, air vibrations due to sound from the outside other than the speaker a are directly transmitted to the funnel of the cathode ray tube without passing through the cabinet, and are transmitted to the metal strip i through the panel g, the pin h, the support system f, and the frame e. Further, when a color cathode ray tube is used as a display of a business computer or an office computer, for example, vibrations caused by operating an input keyboard, a mouse or the like are also transmitted to the metal strip. The vibration of such metal strips causes color shift and screen disturbance, and therefore it is necessary to suppress them. Conventionally, the suppression of the vibration of the metal strip is performed at a resonance frequency of, for example, 1
This is done by setting the frequency to be a certain value or more such as 50 Hz or more.
【0006】[0006]
【発明が解決しようとする課題】ところで、従来におい
ては全金属細条に対してある程度以上の共振周波数を有
すれば良しというような比較的曖昧な基準で金属細条の
内部応力を一律に設定する場合が多かったが、しかし、
厳密にはカラー陰極線管の金属細条には伝わりにくい周
波数帯域と伝わり易い周波数帯域があり、伝わりにくい
周波数帯域に共振周波数があるように金属細条の応力を
設定すれば金属細条の振動の防止に効果があるわけであ
る。しかし、従来においてはかかる厳密な配慮がなかっ
た。By the way, in the prior art, the internal stress of metal strips is uniformly set on the basis of a relatively ambiguous reference that all metal strips should have a resonance frequency above a certain level. Often, but
Strictly speaking, the metal strip of the color cathode-ray tube has a frequency band that is difficult to transmit and a frequency band that is easy to transmit, and if the stress of the metal strip is set so that the resonance frequency is in the frequency band that is difficult to transmit, the vibration of the metal strip will occur. It is effective in prevention. However, in the past, such strict consideration was not given.
【0007】また、多数ある金属細条も一般にその場所
により長さが異なり、そのため、同じ共振周波数を有す
るために必要な金属細条は金属細条の位置により異なる
が、従来においてはそのようなことが考慮されることな
く金属細条の内部応力が略一律に設定されていた。従っ
て、金属細条の振動を完璧に抑制することは困難であっ
た。In addition, a large number of metal strips generally have different lengths depending on their locations, so that the metal strips required to have the same resonance frequency differ depending on the position of the metal strips. Without considering this, the internal stress of the metal strip was set almost uniformly. Therefore, it is difficult to completely suppress the vibration of the metal strip.
【0008】本発明はこのような問題点を解決すべく為
されたものであり、外部振動による金属細条の共振を有
効に防止することを目的とする。The present invention has been made to solve such a problem, and an object thereof is to effectively prevent resonance of a metal strip due to external vibration.
【0009】[0009]
【課題を解決するための手段】本発明カラー陰極線管の
色選別電極は、各金属細条がそこに伝わりにくい振動周
波数帯域の最低値以上の共振周波数を有するに最小限必
要なカラー陰極線管の水平方向における内部応力分布よ
りも大きな内部応力を有することを特徴とする。The color selection electrode of the color cathode ray tube of the present invention has a minimum required color cathode ray tube in which each metal strip has a resonance frequency equal to or higher than the lowest value of the vibration frequency band in which it is difficult for the metal strip to be transmitted to the metal strip. It is characterized by having an internal stress larger than the internal stress distribution in the horizontal direction.
【0010】[0010]
【作用】本発明カラー陰極線管の色選別電極によれば、
各金属細条がそこに伝わりにくい音域の最低値以上の共
振周波数を有するように水平方向における内部応力分布
よりも大きな内部応力を有するので外部振動による金属
細条の共振を有効に防止することができる。According to the color selection electrode of the color cathode ray tube of the present invention,
Since each metal strip has an internal stress larger than the internal stress distribution in the horizontal direction so as to have a resonance frequency equal to or higher than the lowest value of the sound range that is hard to be transmitted to it, it is possible to effectively prevent the resonance of the metal strip due to external vibration. it can.
【0011】[0011]
【実施例】以下、本発明カラー陰極線管の色選別電極を
図示実施例に従って詳細に説明する。図1(A)、
(B)は本発明カラー陰極線管の色選別電極の一つの実
施例を説明するもので、(A)はカラー陰極線管の色選
別電極の正面図、(B)は金属細条の水平方向における
内部応力分布(右半分を示す)図である。The color selection electrode of the color cathode ray tube of the present invention will be described in detail below with reference to the illustrated embodiments. FIG. 1 (A),
(B) is for explaining one embodiment of the color selection electrode of the color cathode ray tube of the present invention, (A) is a front view of the color selection electrode of the color cathode ray tube, (B) in the horizontal direction of the metal strip. It is an internal stress distribution (right half is shown) figure.
【0012】図面において、1、1、…は金属細条で、
縦(垂直)方向に伸びた向きで間に縦方向に伸びるスリ
ット2、2、…が形成されるように水平方向に沿って配
設されており、中央の金属細条1oは1番長く、中央か
ら左右両側に行くに従って短かくなっており、従って、
両端の金属細条1n、1nは1番短かい。3はかかる多
数の金属細条1、1、…に張力を与えてなる色選別電極
である。In the drawings, 1, 1, ... Are metal strips,
Are arranged along the horizontal direction so that slits 2, 2, ... That extend in the vertical direction are formed in a direction that extends in the vertical (vertical) direction, and the metal strip 1o in the center is the longest, It gets shorter from the center to the left and right sides, so
The metal strips 1n and 1n at both ends are the shortest. Reference numeral 3 is a color selection electrode which applies tension to the large number of metal strips 1, 1, ....
【0013】そして、本実施例の色選別電極の各金属細
条1、1、…は、図1(B)の例えばAあるいはBある
いはCに示すように、σL 側の禁止エリア(絶対的禁止
エリア)とσH 側の禁止エリアとの間エリアに納まるよ
うな内部応力分布を有している。そして、金属細条の内
部応力σは次式で表される。 σ=4.0816×10-10 ×L2 ×ρ×f2 但し、Lは金属細条の長さ(図2参照)、ρは金属細条
の比重、fは金属細条の共振周波数であり、金属細条の
比重ρは金属細条材料により決まるので上記式から明ら
かなように各金属細条の内部応力σは自己の長さ(これ
はカラー陰極線管の規格が決まれば中央からどれだけ離
れた位置にあるかによって決まる)と、持つべき共振周
波数により決まるのである。Each of the metal strips 1, 1, ... Of the color selection electrode of this embodiment has a prohibited area (absolute) on the σ L side, as shown by A or B or C in FIG. 1B. It has an internal stress distribution that fits in the area between the prohibited area) and the prohibited area on the σ H side. The internal stress σ of the metal strip is expressed by the following equation. σ = 4.0816 × 10 -10 × L 2 × ρ × f 2 where L is the length of the metal strip (see FIG. 2), ρ is the specific gravity of the metal strip, and f is the resonance frequency of the metal strip. Since the specific gravity ρ of the metal strip is determined by the metal strip material, the internal stress σ of each metal strip is the self-length (which is the center of the color cathode ray tube if the standard of the color cathode-ray tube is determined). It depends on whether or not they are far apart) and the resonance frequency that they should have.
【0014】ところで、図1(B)に示す禁止エリア
(σH 側及びσL 側)はどのようにして求めたかについ
て説明する。これは、当該カラー陰極線管が用いられる
例えばテレビジョン受像機等のセットを用いて図3
(A)に示すようにOHzから20KHzまでの各周波
数の一定のエネルギーを有する音声をスピーカにより発
生させる等して振動をカラー陰極線管にその外部から与
え、それによって金属細条の支持点で各周波数の振動が
どのようなエネルギーで生じたかを調べ、その結果(例
えば図3(B)に示す)、振動のエネルギーの弱くなっ
た周波数帯域内に共振周波数が納まるようにするにはど
のような内部応力分布にしたら良いかを求めた結果に基
づいて得たものである。Now, how the prohibited areas (σ H side and σ L side) shown in FIG. 1B are obtained will be described. This is performed by using a set such as a television receiver in which the color cathode ray tube is used.
As shown in (A), vibration is applied to the color cathode ray tube from its outside by, for example, generating a sound having a constant energy of each frequency from OHz to 20 KHz by a speaker, and thereby, at each supporting point of the metal strip. What kind of energy was used to generate the vibration of the frequency, and as a result (for example, shown in FIG. 3B), how to set the resonance frequency within the frequency band where the energy of the vibration is weakened? This is obtained based on the result of ascertaining whether the internal stress distribution should be used.
【0015】即ち、一定の振動レベルの振動をカラー陰
極線管を組込んだセットに対し周波数を順次変えて与え
ると、金属細条に伝達される経路である周波数は減衰し
て与えられたエネルギーよりも小さくなるが、別のある
周波数は共振して与えられたエネルギーよりも大きくな
るので、どの周波数の振動が弱くなるかを調べる。する
と、例えば図3(B)に示すような測定結果が得られ
る。勿論、この測定結果はカラー陰極線管が備え付けら
れる条件によって千差万別であり、カラー陰極線管を用
いると同じか近似した条件の下で測定を行うことが肝要
である。That is, when a vibration having a constant vibration level is applied to a set incorporating a color cathode ray tube by sequentially changing the frequency, the frequency which is a path transmitted to the metal strip is attenuated and the energy applied is given. However, some other frequency becomes larger than the energy given by resonance, so we investigate which frequency vibration becomes weaker. Then, for example, the measurement result as shown in FIG. 3B is obtained. Of course, this measurement result varies depending on the condition in which the color cathode ray tube is installed, and it is important to perform the measurement under the same or similar conditions as those using the color cathode ray tube.
【0016】そして、振動が弱くなる周波数帯域、即ち
振動を伝達しにくい周波数帯域内に共振周波数が納まる
ようにすれば金属細条の振動を制約することができるこ
とになる。本発明はかかる着想に基づいて為されたもの
であり、そして、金属細条は場所により長さが異なる関
係上振動が弱くなる周波数帯域内に納まるような内部応
力σの最大値σH 及びσL は金属細条の場所により異な
り、それを図1(B)に示した。即ち、最大値σH より
も上と最小値σL よりも下が一応禁止エリアといえる。
そして、各実施例A、B、Cにおいてはその二つの禁止
エリアの間の部分に納まるように内部応力σが分布して
おり、従って各金属細条1、1、…の振動をきわめて小
さくすることができる。If the resonance frequency is set within the frequency band in which the vibration becomes weak, that is, the frequency band in which the vibration is hard to be transmitted, the vibration of the metal strip can be restricted. The present invention has been made based on such an idea, and the metal strips have different maximum lengths σ H and σ of the internal stress σ that can be accommodated within a frequency band in which vibration is weak due to the difference in length depending on the location. L differs depending on the location of the metal strip, which is shown in Fig. 1 (B). That is, it can be said that the area above the maximum value σ H and below the minimum value σ L is the prohibited area.
In each of Examples A, B, and C, the internal stress σ is distributed so as to be contained in the area between the two prohibited areas, so that the vibration of each metal strip 1, 1, ... Is made extremely small. be able to.
【0017】尚、上記実施例においてはσH 側禁止エリ
アに入らないような内部応力分布を有しているが、σH
側禁止エリアに入っても振動は余り大きくならないので
問題はない。というのは、σH 側禁止エリアだと金属細
条の共振周波数が相当に高くなり、金属細条の共振周波
数が高いと振幅が小さくなるので共振しても余り問題と
はならずほとんど色ずれが生じない。但し、σL 側禁止
エリアには絶対に入らないような内部応力分布を有さな
ければならない。というのは、σL 側禁止エリアに入る
と伝達しにくい帯域よりも低い周波数で共振し、振幅の
大きい振動となり、色ずれの問題が生じるからである。
従ってσL 側禁止エリアを絶対的禁止エリアと称するも
のである。要するに、各金属細条がそこに伝わりにくい
振動周波数域の最低値以上の共振周波数を有するに最小
限必要なカラー陰極線管の水平方向における内部応力分
布よりも大きな内部応力を有すれば良い。[0017] Although a internal stress distribution as entering the sigma H-side prohibition area in the above embodiment, sigma H
Even if it enters the side prohibited area, there is no problem because the vibration does not increase so much. This is because the resonance frequency of the metal strip becomes considerably high in the σ H side prohibited area, and the amplitude becomes small when the resonance frequency of the metal strip is high. Does not occur. However, it must have an internal stress distribution that will never enter the σ L side prohibited area. This is because, when entering the σ L- side prohibited area, resonance occurs at a frequency lower than the band in which transmission is difficult, vibration with large amplitude occurs, and a problem of color misregistration occurs.
Therefore, the σ L side prohibited area is called an absolute prohibited area. In short, it suffices that each metal strip has an internal stress larger than the horizontal internal stress distribution of the color cathode ray tube, which is the minimum required to have a resonance frequency equal to or higher than the lowest value of the vibration frequency range that is hard to be transmitted to the metal strip.
【0018】尚、カラー陰極線管のタイプによって色選
別電極には、図1に示したように中央から左右両側へ行
くに従って金属細条が短かくなるようになっていたが、
全金属細条がほとんど同じ長さのものもあり、将来、中
央から左右両側へ行くに従って金属細条が長くなるよう
なタイプの色選別電極も現れるかもしれない。このよう
に、金属細条の長さの分布が異なればそれに伴って必要
となる内部応力分布も異なることはいうまでもない。Depending on the type of color cathode ray tube, the metal strips on the color selection electrode have become shorter from the center to the left and right sides as shown in FIG.
Some metal strips have almost the same length, and in the future, a type of color selection electrode in which the metal strips become longer from the center to the left and right sides may appear. As described above, it goes without saying that if the distribution of the lengths of the metal strips is different, the distribution of the internal stress required accordingly is also different.
【0019】[0019]
【発明の効果】請求項1のカラー陰極線管の色選別電極
は、各金属細条がそこに伝わりにくい振動周波数域の最
低値以上の共振周波数を有するに最小限必要なカラー陰
極線管の水平方向における内部応力分布よりも大きな内
部応力を有することを特徴とするものである。従って、
本発明カラー陰極線管の色選別電極によれば、外部振動
による金属細条の共振を有効に防止する。According to the color selecting electrode of the color cathode ray tube of claim 1, the minimum horizontal direction of the color cathode ray tube is required for the metal strips to have a resonance frequency equal to or higher than the lowest value of the vibration frequency range in which it is difficult for the metal strips to be transmitted thereto. It has a larger internal stress than the internal stress distribution in. Therefore,
According to the color selection electrode of the color cathode ray tube of the present invention, resonance of the metal strip due to external vibration is effectively prevented.
【図1】(A)、(B)は本発明カラー陰極線管の色選
別電極の実施例を説明するためのもので、(A)は色選
別電極の正面図、(B)は各別の内部応力分布例を示す
内部応力分布図である。1A and 1B are for explaining an embodiment of a color selection electrode of a color cathode ray tube according to the present invention. FIG. 1A is a front view of the color selection electrode, and FIG. It is an internal stress distribution diagram which shows an example of internal stress distribution.
【図2】金属細条の共振の説明図である。FIG. 2 is an explanatory diagram of resonance of a metal strip.
【図3】(A)、(B)は振動の伝達特性を説明するた
めもので、(A)は特性測定のために与える振動の振動
数・エネルギー関係図、(B)は金属細条の支持点にお
ける振動数・エネルギー関係図である。3 (A) and 3 (B) are for explaining a transmission characteristic of vibration, FIG. 3 (A) is a frequency / energy relationship diagram of vibration given for characteristic measurement, and FIG. 3 (B) is of a metal strip. It is a frequency / energy relation figure in a support point.
【図4】(A)、(B)は振動の伝達経路の説明をする
ためもので、(A)は正面図、(B)は側面図である。4A and 4B are for explaining a vibration transmission path, FIG. 4A is a front view, and FIG. 4B is a side view.
1 金属細条 2 スリット 3 色選別電極 1 Metal strip 2 Slit 3 Color selection electrode
Claims (1)
じるように配列されたグリッド構体を張架してなるカラ
ー陰極線管の色選別電極において、 各金属細条がそこに伝わりにくい振動周波数帯域の最低
値以上の共振周波数を有するに最小限必要なカラー陰極
線管の水平方向における内部応力分布よりも大きな内部
応力を有することを特徴とするカラー陰極線管の色選別
電極1. In a color selection electrode of a color cathode ray tube, which comprises a grid structure in which a large number of metal strips are arranged so that slits are formed between them, a vibration frequency band in which each metal strip is hard to be transmitted to the color selection electrode. Color selection electrode of a color cathode ray tube, which has an internal stress larger than a horizontal internal stress distribution of the color cathode ray tube required to have a resonance frequency equal to or higher than the minimum value of
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP22379793A JPH0757646A (en) | 1993-08-17 | 1993-08-17 | Color selecting electrode for color cathode-ray tube |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP22379793A JPH0757646A (en) | 1993-08-17 | 1993-08-17 | Color selecting electrode for color cathode-ray tube |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH0757646A true JPH0757646A (en) | 1995-03-03 |
Family
ID=16803875
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP22379793A Pending JPH0757646A (en) | 1993-08-17 | 1993-08-17 | Color selecting electrode for color cathode-ray tube |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0757646A (en) |
-
1993
- 1993-08-17 JP JP22379793A patent/JPH0757646A/en active Pending
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