JPS59165349A - Cathode-ray tube - Google Patents
Cathode-ray tubeInfo
- Publication number
- JPS59165349A JPS59165349A JP3743683A JP3743683A JPS59165349A JP S59165349 A JPS59165349 A JP S59165349A JP 3743683 A JP3743683 A JP 3743683A JP 3743683 A JP3743683 A JP 3743683A JP S59165349 A JPS59165349 A JP S59165349A
- Authority
- JP
- Japan
- Prior art keywords
- axis direction
- glass panel
- rectangular frame
- face
- vertical axis
- 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
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
- H01J29/86—Vessels; Containers; Vacuum locks
- H01J29/861—Vessels or containers characterised by the form or the structure thereof
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2229/00—Details of cathode ray tubes or electron beam tubes
- H01J2229/86—Vessels and containers
- H01J2229/8613—Faceplates
- H01J2229/8616—Faceplates characterised by shape
- H01J2229/862—Parameterised shape, e.g. expression, relationship or equation
Landscapes
- Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)
Abstract
Description
【発明の詳細な説明】
〔発明の技術分野〕
本発明は陰極線管に係）、特にそＣ）ＩＪガラスパネル
関するものである。DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to cathode ray tubes), and in particular to C) IJ glass panels.
一般に陰極線管の外囲器は第１図に示すように、内面に
螢光スクリーンを有し実質的に矩形状枠を有するガラス
パネル（１）とこのガラスパネル（１）にフリットガラ
ス等を介して接合部（３）で接合された漏斗状７アンネ
ル（２）とから構成されている。また７アンネル（２）
のガラスパネル（１）の反対側には電子銃を内股したネ
ックが連結されている。またガラスパネル（１）は螢晃
スクリーンを透過映出するための実質的に矩形状の枠内
に相当するフェース部（１−２）と矩形状枠に対応する
スカート部（１−３）とから構成される。また一般に７
工−ス部（１−２）の矩−形状枠は垂直軸（Ｙ−Ｙ’）
方向の長さが水平軸（ｘ−ｘ’）方向の長さより短かく
なるように構成配置される。Generally, as shown in Figure 1, the envelope of a cathode ray tube consists of a glass panel (1) having a substantially rectangular frame with a fluorescent screen on its inner surface, and a frit glass or the like interposed between this glass panel (1). It consists of seven funnel-shaped funnels (2) joined at a joint (3). Also 7 Anne (2)
A neck with an electron gun inside is connected to the opposite side of the glass panel (1). The glass panel (1) also has a face part (1-2) corresponding to the inside of a substantially rectangular frame for projecting the fluoroscreen, and a skirt part (1-3) corresponding to the rectangular frame. It consists of Also generally 7
The rectangular frame of the work part (1-2) is on the vertical axis (Y-Y')
The structure and arrangement are such that the length in the direction is shorter than the length in the horizontal axis (xx') direction.
さらに実際の映像は電子銃（図示せず）からの電子ビー
ムを例えばＮＴＳＣ方式によって偏向走査されて映出さ
れるので、フェース部の中央と周辺との゛磁子ビーム走
行距離差及び集束差を縮少させるために外方にふくらん
だ曲面状に形成されている。Furthermore, since the actual image is displayed by deflecting and scanning the electron beam from an electron gun (not shown) using, for example, the NTSC method, the difference in magneton beam travel distance and focusing difference between the center and the periphery of the face can be reduced. It is formed into a curved shape that bulges outward in order to reduce the size.
第２図はこのようなガラスパネルの断面図を示している
。フェース部の外面面出は単一の曲率即ち球の一部であ
り、垂直軸方向（１−２Ｖ）、水平軸方向（１−２Ｈ）
及び対角軸方向（１−２Ｄ）の曲率をそれぞれＲｖ、
Ｒ，及びＲＤ とすると、几Ｖ −ＲＨ−Ｒｎとされて
いる。尚、第２図では簡便のために中心線の右側に垂直
軸方向と対角軸方向を、同じく左側に水平軸方向をまと
めて示している。またフェース部の内面曲率は外面と同
様に単一の曲率で垂直軸方向、水平軸方向及び対角軸方
向の曲率をそれぞれ帳、に（及びＦＬＤ とすると、
Ｒ′ｖ＝Ｒ′）Ｉ＝Ｒ／Ｄとされ一部いる。従ってフェ
ース部の矩形状枠から接合部（３）までのスカート部の
管軸方向高さを垂直軸方向（１−３Ｖ）、水平軸方向（
１−３Ｈ）及び対角軸方向（１−３Ｖ）でそれぞれＣ’
ＨＶ 、ＣＩＩＨ及びＣＨＤとすると、ＣＨＶ ＞ Ｃ
ＨＨ＞ ＣＨＤとなっている。また垂直軸方向。FIG. 2 shows a cross-sectional view of such a glass panel. The external surface of the face part has a single curvature, that is, a part of the sphere, and has a vertical axis direction (1-2V) and a horizontal axis direction (1-2H).
and the curvature in the diagonal axis direction (1-2D) are Rv, respectively.
Letting R and RD be 几V -RH-Rn. In addition, in FIG. 2, for the sake of simplicity, the vertical axis direction and the diagonal axis direction are shown together on the right side of the center line, and the horizontal axis direction is shown together on the left side. In addition, the inner curvature of the face part is a single curvature similar to the outer surface, and the curvatures in the vertical axis direction, horizontal axis direction, and diagonal axis direction are respectively calculated (and if FLD is
R'v=R')I=R/D, and there are some cases. Therefore, the height in the tube axis direction of the skirt part from the rectangular frame of the face part to the joint part (3) is determined by the vertical axis direction (1-3V) and the horizontal axis direction (1-3V).
1-3H) and diagonal axis direction (1-3V), respectively.
Assuming HV, CIIH and CHD, CHV > C
HH>CHD. Also in the vertical axis direction.
水平軸方向及び対角軸方向の７工−ス部の外枠近傍の厚
さをｔｙ 、 ｔＨ及びｔｎとすると上記外面と内面の
曲率の関係から、ｔｙ＜−ｔＨ＜ｔＤとなっている。Let ty, tH, and tn be the thicknesses near the outer frame of the 7-work portion in the horizontal axis direction and diagonal axis direction, and from the relationship between the curvatures of the outer surface and the inner surface, ty<-tH<tD.
このようなガラスパネルにおいては大口径になるほどス
カート部の高さ及び外枠近傍の７工−ス部肉厚の各軸の
差が大きくなり、外囲器として機械的に好ましくない影
響を与える。即ちガラスパネルの真空排気圧よる外部大
気圧からの物理的膨張応力Ｐ８ は矩形法枠近傍に集
中し、この時の垂直軸方向、水平軸方向及び対角軸方向
の応力（Ｐｇ−ｖ）＋（Ｐｇ−＋ｔ）及び（Ｐｇ−Ｄ）
はｓ （Ｐｓ−ｖ ） ＞ （Ｐｓ−Ｈ） ＞ （Ｐ
ｓ−ｏ ）となる。即ち垂直軸方向に最大の応力歪が加
わること釦なる。しかし乍ら従来のガラスパネルでは最
大の応力歪が加わる垂直軸方向の肉厚は逆に最も小さい
。従ってガラスパネルに衝撃が加わったり、わずかな欠
陥をオリジンとする機械的強度の弱い部分は容易に爆縮
を生ずる。またガラスノくネルに対する衝撃力はガラス
パネルとファンネルの接合部に伝達されるが、この接合
部は他の部位よりも機械的強度が劣るため加衝撃点と接
合部との距離が短かいと、この衝撃力があまり減衰しな
い内に接合部に達するため爆縮を生じ易い。特に従来の
ガラスパネルのように対角軸方向のスカート高さが極め
て小さいものはこの危険性が高い。In such a glass panel, the larger the diameter, the larger the difference in each axis between the height of the skirt portion and the wall thickness of the 7-section portion near the outer frame, which has an unfavorable mechanical effect on the envelope. That is, the physical expansion stress P8 from the external atmospheric pressure due to the evacuation pressure of the glass panel is concentrated near the rectangular frame, and at this time the stress in the vertical axis direction, horizontal axis direction, and diagonal axis direction (Pg-v) + (Pg-+t) and (Pg-D)
is (Ps-v) > (Ps-H) > (P
s-o). In other words, the maximum stress strain is applied to the button in the vertical axis direction. However, in conventional glass panels, the wall thickness in the vertical axis direction, where the maximum stress and strain is applied, is on the contrary the smallest. Therefore, if a glass panel is subjected to an impact, or if a portion of the glass panel has weak mechanical strength due to a slight defect, implosion can easily occur. In addition, the impact force on the glass funnel is transmitted to the joint between the glass panel and the funnel, but this joint has lower mechanical strength than other parts, so if the distance between the point of impact and the joint is short, Since this impact force reaches the joint before it is sufficiently attenuated, implosion is likely to occur. This risk is particularly high in conventional glass panels where the skirt height in the diagonal axis direction is extremely small.
本発明は以上の点に鑑みてなされたもので１機械的強度
の慶れたガラスパネルを有する陰極線管を提供すること
を目的とする。The present invention has been made in view of the above points, and an object of the present invention is to provide a cathode ray tube having a glass panel with excellent mechanical strength.
本発明はガラスパネルのフェース部の実質的に矩形状枠
をなす端部からガラスノくネルのスカート部とファンネ
ルとの接合部までの垂直軸方向、水平軸方向及び対角軸
方向の管軸方向の高さをそれぞれＣＨＶ 、ＣＨＨ及び
ＣＨＤとし、フェース部の実質的に矩形法枠近傍の垂直
軸方向、水平軸方向及び対角軸方向の肉厚をそれぞれ’
Ｖ ＋ ｔＨ及びＩＤとする時、ＣＨＶ りＣＨＨ＜
ＣＨＤ 、且つ１．〉１Ｈ＞１Ｄとすうことしこよって
、フェース部の内外面の各軸面率分布を実質的に変え、
機械的強度の優れた陰極線管としたものである。The present invention is directed to vertical, horizontal, and diagonal tube axis directions from the end of the face portion of the glass panel that forms a substantially rectangular frame to the junction between the skirt portion of the glass funnel and the funnel. Let the heights of the face be CHV, CHH, and CHD, respectively, and the wall thicknesses in the vertical axis direction, horizontal axis direction, and diagonal axis direction near the substantially rectangular frame of the face part to be ', respectively.
When V + tH and ID, CHV ri CHH<
CHD, and 1. 〉1H>1D, thereby substantially changing the area ratio distribution of each axis on the inner and outer surfaces of the face portion,
This cathode ray tube has excellent mechanical strength.
以下本発明の実施例につき第３図を参照して詳細に説明
する。伺、第３図に示すガラスノくネルは第２図と対応
するもので、フェース部の垂直軸方向、水平軸方向及び
対角軸方向、及び各軸方向の矩形状枠端から接合部まで
の管軸方向高さ、即ちスカート部高さ、フェース部の矩
形法枠近傍の肉厚と外面自車及び内面曲率の各符号は第
２図と対応する符号は全て同一の符号で示しである。Embodiments of the present invention will be described in detail below with reference to FIG. The glass nozzle shown in Figure 3 corresponds to Figure 2, and the vertical axis, horizontal axis, and diagonal axis of the face, and from the edge of the rectangular frame to the joint in each axis direction. The height in the tube axis direction, that is, the height of the skirt portion, the wall thickness near the rectangular frame of the face portion, the outer surface, and the inner curvature are all indicated by the same reference numerals that correspond to those in FIG. 2.
第３図に示すガラスパネル（１）において、フェース部
各軸方向のスカート部高さＣＨＶ 、ＣＨＨ及びＣＨＤ
と、同じくフェース部各軸方向の矩形法枠近傍の肉厚’
ＶｓｔＨ及び１Ｄは、ＣＨＶ＜ＣＨＨ＜ＣＨＤ 、且つ
ｔｖ＞ｔＨ≧１Ｄなる関係を有するように構成されてい
る。In the glass panel (1) shown in Fig. 3, the heights of the skirt portion in each axial direction of the face portion are CHV, CHH, and CHD.
Similarly, the wall thickness near the rectangular frame in each axis direction of the face.
VstH and 1D are configured to have a relationship of CHV<CHH<CHD and tv>tH≧1D.
ガラスパネルの各軸方向のスカート部の高さ及びフェー
ス部各軸方向の矩形法枠近傍の肉厚金上記のように構成
するためＫはフェース部各軸方向の外面曲率Ｉ’Ｌｖ、
ＲＨ及びＲＤ と同じく内面曲率几Ｖ。Since the height of the skirt part in each axial direction of the glass panel and the thickness of the wall near the rectangular frame of the face part in each axial direction are configured as described above, K is the outer surface curvature of the face part in each axial direction I'Lv,
Same as RH and RD, the inner curvature is V.
几−及びＲ′Ｄ を、”Ｖ ＜ Ｒ１１＜ ＲＤ及びＲ
′ｖ＜Ｒ２Ｈ＜几′Ｄとすることが有効である。几- and R'D, "V < R11 < RD and R
It is effective to set 'v<R2H<几'D.
ガラスパネルを以上の第３図に示すような形状とするこ
とＫより、大気圧による機械的膨張応力が最大となる画
面垂直軸方向上端、の肉厚は充分厚く構成されているの
で大幅な機械的強度の向上が得られる。また７工−ス部
外枠上端からガラスパネルと７７ンネル接合部までの距
離の内、特に問題であった対角部に対応する距離が充分
確保されるのでこの部分の肉厚を逆に充分薄くすること
ができガラスパネルの重量を大幅に増加させることなく
衝撃力に強いガラスパネルとすることができるＯ
〔発明の効果〕
以上のように本発明によれば機械的強度にすぐれたガラ
スパネルを有する陰極線管を提供することができる。By forming the glass panel into the shape shown in Figure 3 above, the wall thickness at the upper end in the vertical axis direction of the screen, where the mechanical expansion stress due to atmospheric pressure is greatest, is thick enough, so there is no need for significant mechanical damage. Improved target strength can be obtained. In addition, within the distance from the top of the outer frame of the 7th section to the joint between the glass panel and the 77th channel, a sufficient distance is secured to correspond to the diagonal section, which was a particular problem, so the wall thickness of this section can be reduced to a sufficient distance. It is possible to make a glass panel thinner and strong against impact without significantly increasing the weight of the glass panel. [Effects of the Invention] As described above, according to the present invention, a glass panel with excellent mechanical strength can be obtained. A cathode ray tube can be provided.
第１図は陰極線管の外囲器形状を説明するための概略斜
視図、第２図は従来のガラスパネル断面を垂直軸、水平
軸及び対角軸をまとめて示す概略模式図、第３図は本発
明の一実施例を示すガラスパネルの断面を第２図に対応
して示す概１＠模式図である。
（１）・・・ガラスパネル （１−２）・・・フェー
ス部（１−３） ・スカート部 （２）・ファンネル
（３）・・接き部
（Ｃ）Ｉ）Ｔ ）・スカート部の垂直軸方向の高さくＣ
Ｉ（Ｖ） スカート部の水平軸方向の高さくＣＨＤ
） スカート部の対角軸方向の高さくＲＶ） フェ
ース部の垂直軸方向の外面曲率（ＦＬ’ｖ）・フェース
部の垂直軸方向の内面曲率（ＲＨ） フェース部の水
平軸方向の外面曲率（可θ・・フェース部の水平軸方向
の内面曲率（Ｒｎ）・フェース部の対角軸方向の外面曲
率（几ｔ）・・フェース部の対角軸方向の内面曲率（ｔ
ｖ） フェース部の矩形状枠近傍の垂直軸方向の肉厚
（ｔｏ）・フェース部の矩形状枠近傍の水平軸方向の肉
厚（ｔｌ）） −７工−ス部の矩形状枠近傍の対角Ｉ？
ｌｈ方１句σ〕肉Ｉ！代理人 弁理士 則 近 憲 佑
（番よろ）１名）第 １ 図
第８図
手続補正１（自発）
昭和 年 月 日
５８．７．−４
特許庁長官殿
１、事件の表示
特願昭ｓ ｓ −Ｖ７４３６号
２、発明の名称
陰極線管
３、 補正をする者
事件との関係 特許出願人
（３０７） 東京芝浦電気株式会社
４、代理人
〒１００
東京都千代田区内幸町１−１−６
明細書全般
・、 ！”’、” ｊヘノ
訂正明細廟
１、発明の名称
陰極線管
２、特許請求の範囲
１）少くとも内面に螢光スクリーンを崩し実質的に矩形
状枠からなり前記実質的に矩形状枠をなす内側の外面と
内面とがそれぞれ曲面状に形成されたガラスパネルと、
このガラスパネルに接合部を介して接合された漏斗状フ
ァンネルとを具備する陰極線管において、前記矩形状枠
端から前記接合部までの垂直軸方向、水平軸方向及び対
角軸方向の管軸方向高さをそれぞれＣＨＶ、ＣＨＨ及び
ＣＨＤとし、且つ前記ガラスパネルの前記実質的に矩形
状枠をなす内側近傍の垂直軸方向、水平軸方向及び対角
軸方向の肉厚をそれぞれＬＶ＋ＬＨ及びｔＤとする時、
ＣＨＶ≦ＣＨＨ≦ＣＨＤ 、且っｔｖ≧１Ｈ≧１．
なることを特徴とする陰極線管。
２）前記ガラスパネルの実質的に矩形状枠をなす内側の
外面の垂直軸方向、水平軸方向及び対角軸方向の曲率ジ
をそれぞれＲ，、Ｒ，及び几Ｄ１前記ガラスパネルの実
質的に矩形状枠をなす内側の内面の垂直軸方向、水平軸
方向及び対角軸方向の曲率ユをそれぞれＲ’ｙ 、 Ｒ
’Ｈ及びＲＤとする時、Ｒｖ＜Ｒｕ（Ｒ，、且つＲ／ｖ
＜ Ｒ−＜ Ｒ′ｒ、なることを芳１上ユ２特許請求の
範囲第１項記載の陰極線管。
３、発明の詳細な説明
〔発明の技術分野〕
本発明は陰極線管に係り、特にそのガラスパネルに関す
るものである。
〔発明の技術的背景とその問題点〕
一般に陰極線管の外囲器は第１図に示すように、内面に
螢光スクリーンを有し実質的に矩形状枠を有するガラス
パネル（１）とこのガラスパネル（１）にフリットガラ
ス等を介して接合部（３）で接合された漏斗状ファンネ
ル（２）とから構成されている。またファンネル（２）
のガラスパネル（１）の反対側には電子銃を内設したネ
ックが連結されている。またガラスパネル（１）は螢光
スクリーンを透過映出するだめの実質的に矩形状の枠内
に相当するフェース部（１−２）と矩形状枠に対応する
スカート部（１−３）とから構成される。また一般にフ
ェース部（１−２）の矩形状枠は垂直軸（Ｙ−Ｙ’）方
向の長さが水平軸（ｘ−ｘ’）方向の長さより短かくな
るように構成配置される。さらに実際の映像は電子銃（
図示せず）からの電子ビームを例えばＮＴＳＣ７ｉ式ζ
こよって偏向走査されて映出されるので、フェース部の
中央と周辺との電子ビーム走行距離差及び集速差を縮少
させるために外方にふくらんだ曲面状に形成されている
。
第２図はこのようなガラスパネルの断面図・を示してい
る。フェース部の外面曲率半径は単一の曲率半径即ち球
の一部であり、垂直軸方向（１−２Ｖ）、水平軸方向（
１−２Ｈ）及び対角軸方向（１−２Ｄ）の曲率半径をそ
れぞれＲＶ ＋ ”Ｈ及び１１Ｄとすると、几Ｖ ＝
ＲＨ＝ＲＤとされている。尚、第２図では簡便のために
中心線の右側に垂直軸方向と対角軸方向を、同じく左側
に水平軸方向をまとめて示している。またフェース部の
内面曲率半径は外面と同様に単一の曲率半径で垂直軸方
向、水平軸方向及び対角軸方向の曲率半径をそれぞれＲ
’ｙ 、 ）ＬＳ、及びＲ′Ｄとすると、ａ’、＝几−
＝Ｒ′Ｄとされている。従ってフェース部の矩形状枠か
ら接合部（３）までのスカート部の管軸方向高さを垂直
軸方向（１−３Ｖ）、水平軸方向（１−３Ｈ）及び対角
軸方向（１−３Ｖ）でそれぞれＣＨＶ 、ＣＨＨ及びＣ
ＨＤ ト”’ｊ ルト、ｃＨＶ＞ｃ■ＩＨ＞ＣＨＤトナ
ッテいル。まだ垂直軸方向、水平軸方向及び対角軸方向
のフェース部の外枠近傍の厚さを’ＹＡＨ及び１．とす
ると上記外面と内面の曲率半径の関係がら、ｔｖ＜ｔＭ
＜ｌｎとなっている。
このようなガラスパネルにおいては大型管になルホトス
カート部の高さ及び外枠近傍のフェース部肉厚の各軸の
差が大きくなり、外囲器として機械的に好ましくない影
響を与える。即ちガラスパネルの真空排気による外部大
気圧からの物理的膨張応力ＰＩ＋は矩形状枠近傍に集中
し、この時の垂直軸方向、水平軸方向及び対角軸方向の
応力（ｐｓ−マ）。
（Ｐｌ−ｕ）及び（Ｐｓ−Ｄ）は、（Ｐｓ−ｖ）＞ （
Ｐｓ−ｕ） ＞ （Ｐｓ−ｎ）となる。即ち垂直軸方向
に最大の応力歪が加わることになる。しかし乍ら従来の
ガラスパネルでは最大の応力歪が加わる垂直軸方向の肉
厚は逆に最も小さい。従ってガラスパネルに衝撃が加わ
ったり、わずか７を欠陥をオリジンとする機械的強度の
弱い部分は容易に爆縮を生ずる。またガラスパネルに対
する衝撃力はガラスパネルとファンネルの接合部に伝達
されるが、この接合部は他の部位よりも機械的強度が劣
るため加衝撃点と接合部との距離が短かいと、この衝撃
力があまり減衰しない内に接合部に達するため爆縮を生
じ易い。特に従来のガラスパネルのように対角軸方向の
スカート高さが極めて小さいものはこの危険性が高い。
［発明の目的〕
本発明は以上の点に鑑みてなされたもので、機械的強度
の優れたガラスパネルを有する陰極線管を提供すること
を目的とする。
〔発明の目的〕
本発明はガラスパネルのフェース部の実質的に矩形状枠
をなす端部からガラスパネルのスカート部とファンネル
との接合部までの垂直軸方向、水平軸方向及び対角軸方
向の管軸方向の高さをそれぞれＣＨＶ、ＣＨＨ及びＣＨ
Ｄとし、フェース部の実質的に矩形状枠近傍の垂直軸分
向、水平軸方向及び対角軸方向の肉厚をそれぞれｔＶ＋
（Ｈ及びｔＤとする時、ＣＨＶ≦ＣＨＨ≦ＣＨＤ 、且
ッｔｖ≧１．≧１．とすることによって、フェース部の
内外面の各軸重率半径の分布を実質的に変え、機械的強
度の優れた陰極線管としたものである。
〔発明の実施例〕
以下本発明の実施例につき第３図を参照して詳細に説明
する。尚、第３図に示すガラスパネルは第２図と対応す
るもので、フェース部の垂直軸方向、水平軸方向及び対
角軸方向、及び各軸方向の矩形状枠端から接合部までの
管軸方向高さ、即ちスカート部高さ、フェース部の矩形
状枠近傍の肉厚と外面曲率半径及び内面曲率半径の各符
号は第２図と対応する符号は全て同一の符号で示しであ
る。
第３図に示すガラスパネル（１）において、フェース部
各軸方向のスカート部高さＣＨＶ 、ＣＨ）Ｉ及びＣＨ
Ｄと、同じくフェース部各軸方向の矩形状枠近傍の肉厚
ｊＶ＋ＬＩ（及びｔＤは、ＣＨＶ≦ＣＨＩ（＜ＣＨＤ
、且ッｔｖ≧ｔＨ≧ＬＤなる関係を有するように構成さ
れている。
ガラスパネルの各軸方向のスカート部の高さ及びフェー
ス部各軸方向の矩形状枠近傍の肉厚を上記のように構成
するためにはフェース部各軸方向の外面曲率半径Ｒ，，
Ｒ，及び九と同じく内面曲率半径Ｒ’ｙ、ｆ’Ｌ′Ｈ及
びＲ′Ｄを、ＲＶ＜ＲＨ＜ＲＤ及び鴫く几−＜ｉｔ’。
とすることが有効である。
ガラスパネルを以上の第３図に示すような形状とするこ
とにより、大気圧による機械的膨張応力が最大となる画
面垂直軸方向上端の肉厚は充分厚く構成されているの・
で大幅な機械的強度の向上が得られる。またフェース部
外枠上端からガラスパネルとファンネル接合部までの距
離の内、特に問題であった対角部に対応する距離が充分
確保されるのでこの部分の肉厚を逆に充分薄くすること
ができガラスパネルの重量を大幅に増加させることなく
衝撃力に強いガラスパネルとすることができる。
〔発明の効果〕
以上のように本発明によれば機械的強度にすぐれたガラ
スパネルを有する陰極線管を提供するととができる。
４、図面の簡単な説明
第１図は陰極線管の外囲器形状を説明するための概略斜
視図、第２図は従来のガラスパネル断面を垂直軸、水平
軸及び対角軸をまとめて示す概略模式図、第３図は本発
明の一実施例を示すガラスパネルの断面を第２図に対応
して示す概略模式図である。
（１）・・・ガラスパネル （１−２）・・・フェー
ス部（１−３）・・・スカート部 （２）・・・ファン
ネル（３）・・・接合部
（ＣＨＨ）・・・スカート部の垂直軸方向の高さくＣＨ
Ｖ）・・・スカート部の水平軸方向の高さくＣＨＤ）・
・・スカート部の対角軸方向の高さくＲｖ）・・・フェ
ース部の垂直軸方向の外面曲率半径（鴎）・・・フェー
ス部の垂直軸方向の内面曲率半径（騰、）・・・フェー
ス部の水平軸方向の外面曲率半径（ｔｔｏ）・・・フェ
ース部の水平軸方向の内面曲率半径（ＲＤ）・・・フェ
ース部の対角軸方向の外面曲率半径（Ｒ，）・・・フェ
ース部の対角軸方向の内面曲率半径（ｔｖ）・・・フェ
ース部の矩形状枠近傍の垂直軸方向の肉厚（Ｑ・・・フ
ェース部の矩形状枠近傍の水平軸方向の肉厚（【Ｄ）・
・・フェース部の矩形状枠近傍の対角軸方向の肉厚代理
人弁理士 則 近 憲 佑Fig. 1 is a schematic perspective view for explaining the envelope shape of a cathode ray tube, Fig. 2 is a schematic diagram showing a cross section of a conventional glass panel along vertical, horizontal, and diagonal axes, and Fig. 3 1 is a schematic diagram showing a cross section of a glass panel according to an embodiment of the present invention, corresponding to FIG. 2; FIG. (1)...Glass panel (1-2)...Face part (1-3), Skirt part (2), Funnel (3)...Joint part (C) I) T), Skirt part Vertical axis height C
I (V) Height of skirt part in horizontal axis direction CHD
) Height of the skirt part in the diagonal axis direction (RV) External curvature of the face part in the vertical axis direction (FL'v)・Inner curvature of the face part in the vertical axis direction (RH) External curvature of the face part in the horizontal axis direction ( Possible θ: Inner curvature of the face in the horizontal axis direction (Rn) Outer curvature of the face in the diagonal axis direction (t)...Inner curvature of the face in the diagonal axis direction (t)
v) Thickness in the vertical axis direction near the rectangular frame of the face part (to)・Thickness in the horizontal axis direction near the rectangular frame of the face part (tl)) -7 Thickness in the vicinity of the rectangular frame of the work part Diagonal I?
lh one verse σ] Meat I! Agent: Patent Attorney Noriyuki Chika (1 person) Figure 1 Figure 8 Procedure Amendment 1 (Voluntary) Showa Year, Month, Day 58.7. -4 Mr. Commissioner of the Japan Patent Office1, Indication of the case Patent application Sho ss-V74362, Name of the invention Cathode ray tube3, Person making the amendment Relationship to the case Patent applicant (307) Tokyo Shibaura Electric Co., Ltd.4, Agent Person 〒100 1-1-6 Uchisaiwai-cho, Chiyoda-ku, Tokyo General statement...! ``','' J Heno Corrected Specification 1, Name of the Invention Cathode Ray Tube 2, Claims 1) A substantially rectangular frame with a fluorescent screen broken down at least on the inner surface, said substantially rectangular frame. A glass panel whose inner outer surface and inner surface are each formed into a curved shape,
In a cathode ray tube having a funnel-like funnel joined to the glass panel via a joint, tube axial directions from the end of the rectangular frame to the joint are vertical, horizontal, and diagonal. Let the heights be CHV, CHH, and CHD, respectively, and the wall thicknesses in the vertical axis direction, horizontal axis direction, and diagonal axis direction near the inner side of the substantially rectangular frame of the glass panel be LV+LH and tD, respectively. Time,
CHV≦CHH≦CHD, and tv≧1H≧1.
A cathode ray tube characterized by: 2) The curvatures in the vertical axis direction, horizontal axis direction, and diagonal axis direction of the inner outer surface forming a substantially rectangular frame of the glass panel are R, R, and D1, respectively. The curvatures of the inner surface of the rectangular frame in the vertical axis direction, horizontal axis direction, and diagonal axis direction are R'y and R, respectively.
'H and RD, Rv<Ru(R,, and R/v
<R-<R'r.The cathode ray tube according to claim 1. 3. Detailed Description of the Invention [Technical Field of the Invention] The present invention relates to a cathode ray tube, and particularly to a glass panel thereof. [Technical background of the invention and its problems] Generally, as shown in Fig. 1, the envelope of a cathode ray tube consists of a glass panel (1) having a fluorescent screen on the inner surface and a substantially rectangular frame; It is composed of a funnel-shaped funnel (2) joined to a glass panel (1) via a frit glass or the like at a joint (3). Also funnel (2)
A neck containing an electron gun is connected to the opposite side of the glass panel (1). The glass panel (1) also has a face part (1-2) corresponding to the inside of the substantially rectangular frame for transmitting and projecting the fluorescent screen, and a skirt part (1-3) corresponding to the rectangular frame. It consists of Further, the rectangular frame of the face portion (1-2) is generally arranged such that the length in the vertical axis (Y-Y') direction is shorter than the length in the horizontal axis (x-x') direction. Furthermore, the actual footage is an electron gun (
For example, an NTSC7i type ζ
Since the image is deflected and scanned, the face part is formed into a curved surface that bulges outward in order to reduce the difference in travel distance and collection speed of the electron beam between the center and the periphery of the face part. FIG. 2 shows a cross-sectional view of such a glass panel. The outer radius of curvature of the face part is a single radius of curvature, that is, a part of the sphere, and has a radius of curvature in the vertical axis direction (1-2V) and in the horizontal axis direction (1-2V).
1-2H) and the radius of curvature in the diagonal axis direction (1-2D) are RV + "H and 11D, respectively, then V =
It is assumed that RH=RD. In addition, in FIG. 2, for the sake of simplicity, the vertical axis direction and the diagonal axis direction are shown together on the right side of the center line, and the horizontal axis direction is shown together on the left side. In addition, the inner radius of curvature of the face part is a single radius of curvature, similar to the outer surface, and the radius of curvature in the vertical axis direction, horizontal axis direction, and diagonal axis direction is R.
'y, )LS, and R'D, a', = 几-
=R'D. Therefore, the height in the tube axis direction of the skirt part from the rectangular frame of the face part to the joint part (3) is calculated in the vertical axis direction (1-3V), horizontal axis direction (1-3H), and diagonal axis direction (1-3V). ) for CHV, CHH and C, respectively.
HD Torto, cHV＞c■IH＞CHD Tonatteru.If the thickness near the outer frame of the face in the vertical axis direction, horizontal axis direction, and diagonal axis direction is 'YAH and 1., the above Due to the relationship between the radius of curvature of the outer surface and the inner surface, tv<tM
<ln. In such a glass panel, the difference in each axis between the height of the transparent skirt and the wall thickness of the face near the outer frame becomes large in a large tube, which has an unfavorable mechanical effect on the envelope. That is, the physical expansion stress PI+ from the external atmospheric pressure due to evacuation of the glass panel is concentrated near the rectangular frame, and at this time, the stress (ps-ma) in the vertical axis direction, horizontal axis direction, and diagonal axis direction. (Pl-u) and (Ps-D) are (Ps-v)> (
Ps-u) > (Ps-n). That is, the maximum stress strain is applied in the vertical axis direction. However, in conventional glass panels, the wall thickness in the vertical axis direction, where the maximum stress and strain is applied, is on the contrary the smallest. Therefore, if an impact is applied to the glass panel, or if the mechanical strength of the glass panel is weak due to a single defect, implosion will easily occur. In addition, the impact force on the glass panel is transmitted to the joint between the glass panel and the funnel, but this joint has lower mechanical strength than other parts, so if the distance between the point of impact and the joint is short, this Implosion is likely to occur because the impact force reaches the joint before it is significantly attenuated. This risk is particularly high in conventional glass panels where the skirt height in the diagonal axis direction is extremely small. [Object of the Invention] The present invention has been made in view of the above points, and an object of the present invention is to provide a cathode ray tube having a glass panel with excellent mechanical strength. [Object of the Invention] The present invention is directed to the vertical axis direction, horizontal axis direction, and diagonal axis direction from the end portion of the face portion of the glass panel that forms a substantially rectangular frame to the joint portion between the skirt portion of the glass panel and the funnel. The height in the tube axis direction is CHV, CHH and CH, respectively.
D, and the wall thicknesses of the face near the substantially rectangular frame in the vertical axis direction, horizontal axis direction, and diagonal axis direction are respectively tV+
(When H and tD, by setting CHV≦CHH≦CHD and tv≧1.≧1., the distribution of each axis load radius on the inner and outer surfaces of the face portion is substantially changed, and the mechanical strength [Embodiments of the Invention] Hereinafter, embodiments of the present invention will be explained in detail with reference to FIG. 3.The glass panel shown in FIG. Corresponding to this, the vertical axis direction, horizontal axis direction and diagonal axis direction of the face part, and the height in the tube axis direction from the end of the rectangular frame to the joint part in each axis direction, that is, the height of the skirt part, and the height of the face part. The thickness of the wall near the rectangular frame, the radius of curvature of the outer surface, and the radius of curvature of the inner surface are all indicated by the same reference numerals that correspond to those in FIG. 2. In the glass panel (1) shown in FIG. Skirt height in each axial direction CHV, CH) I and CH
D and the wall thickness near the rectangular frame in each axial direction of the face portion jV+LI (and tD are CHV≦CHI (<CHD
, and tv≧tH≧LD. In order to configure the height of the skirt portion in each axial direction of the glass panel and the wall thickness near the rectangular frame in each axial direction of the face portion as described above, the outer surface curvature radius R in each axial direction of the face portion is required.
Similarly to R, and 9, the inner radius of curvature R'y, f'L'H and R'D are RV<RH<RD and 雫く几-<it'. It is effective to do so. By making the glass panel into the shape shown in Figure 3 above, the wall thickness at the upper end in the vertical axis direction of the screen where the mechanical expansion stress due to atmospheric pressure is maximum is made thick enough.
A significant improvement in mechanical strength can be obtained. Also, of the distance from the upper edge of the face outer frame to the glass panel and funnel joint, there is a sufficient distance corresponding to the diagonal part, which was a particular problem, so it is possible to make the wall thickness of this part sufficiently thin. A glass panel that is strong against impact can be made without significantly increasing the weight of the glass panel. [Effects of the Invention] As described above, according to the present invention, a cathode ray tube having a glass panel with excellent mechanical strength can be provided. 4. Brief description of the drawings Figure 1 is a schematic perspective view for explaining the shape of the envelope of a cathode ray tube, and Figure 2 is a cross-sectional view of a conventional glass panel along the vertical, horizontal, and diagonal axes. FIG. 3 is a schematic diagram corresponding to FIG. 2 and showing a cross section of a glass panel according to an embodiment of the present invention. (1)...Glass panel (1-2)...Face part (1-3)...Skirt part (2)...Funnel (3)...Joint part (CHH)...Skirt vertical axis height CH
V)...Horizontal axis height of skirt part CHD)・
・Height of the skirt portion in the diagonal axis direction Rv) ・External radius of curvature of the face portion in the vertical axis direction (Rv) ・Inner radius of curvature of the face portion in the vertical axis direction (Ten)・・・Radius of curvature of the outer surface of the face in the direction of the horizontal axis (tto)... Radius of curvature of the inner surface of the face in the direction of the horizontal axis (RD)...Radius of curvature of the outer surface of the face in the direction of the diagonal axis (R,)... Radius of inner curvature in the diagonal axis direction of the face portion (tv)...Thickness in the vertical axis direction near the rectangular frame of the face portion (Q...Thickness in the horizontal axis direction near the rectangular frame of the face portion ([D)・
・・Thickness in the diagonal axis direction near the rectangular frame of the face area Patent attorney Noriyuki Chika
Claims (1)
状枠からなル前記実債的に矩形状枠をなす内側の外面と
内面とがそれぞれ曲面状に形成されたガラスパネルと、
このガラスパネルに接合部を介して接合された漏斗状フ
ァンネルとを具備する陰極線管において、前記矩形状枠
端から前記接合部までの垂直軸方向、水平軸方向及び対
角軸方向の管軸方向高さをそれぞれＣＨＶ 、ＣＨＨ及
びＣＨＤとし、且つ前記ガラスパネルの前記実質的に矩
形状枠をなす内側近傍の垂直軸方向、水平軸方向及び対
角軸方向の肉厚をそれぞれｔｙ、ｔＨ及びｔＤとする時
、ＣＨＶ＜ＣＦＩＨ＜ＣＨＤ 、 且ツｔｖ〉ｔ、、〉
ｔｎ ナルコ（！：を特徴とする陰極線管。 ２）前記ガラスパネルの実質的に矩形状枠をなす内側の
外面の垂直軸方向、水平軸方向及び対角軸方向の曲率を
それぞれ”Ｖ ＋ ＲＨ及びＲＤ、前記ガラスパネルの
実質的に矩形状枠をなす内側の内面の垂直軸方向、水平
軸方向及び対角軸方向の曲率をそれぞれＲ’ｌ、ＲＨ及
びＲＤ とする時、Ｒｖ＜几Ｈ＜ Ｒｎ、且つＲ’ｖ
＜ Ｒ′Ｈ＜ ’ＦＬｎなることを示す特許請求の範囲
第１項記載の陰極線管。[Scope of Claims] (1) A substantially rectangular frame having a fluorescent screen on at least the inner surface; glass panel and
In a cathode ray tube having a funnel-like funnel joined to the glass panel via a joint, tube axial directions from the end of the rectangular frame to the joint are vertical, horizontal, and diagonal. The heights are CHV, CHH, and CHD, respectively, and the wall thicknesses in the vertical axis direction, horizontal axis direction, and diagonal axis direction near the inner side of the substantially rectangular frame of the glass panel are ty, tH, and tD, respectively. When, CHV<CFIH<CHD, and tv>t,,>
A cathode ray tube characterized by the following: 2) The curvatures in the vertical axis direction, horizontal axis direction, and diagonal axis direction of the inner outer surface forming a substantially rectangular frame of the glass panel are respectively "V + RH and RD, when the curvatures in the vertical axis direction, horizontal axis direction, and diagonal axis direction of the inner surface of the glass panel forming a substantially rectangular frame are respectively R'l, RH, and RD, Rv<几H <Rn, and R'v
The cathode ray tube according to claim 1, wherein <R'H<'FLn.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3743683A JPS59165349A (en) | 1983-03-09 | 1983-03-09 | Cathode-ray tube |
| US06586147 US4535907B1 (en) | 1983-03-09 | 1984-03-05 | Cathode-ray tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3743683A JPS59165349A (en) | 1983-03-09 | 1983-03-09 | Cathode-ray tube |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59165349A true JPS59165349A (en) | 1984-09-18 |
| JPH0364982B2 JPH0364982B2 (en) | 1991-10-09 |
Family
ID=12497459
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3743683A Granted JPS59165349A (en) | 1983-03-09 | 1983-03-09 | Cathode-ray tube |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59165349A (en) |
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| KR100405235B1 (en) * | 1998-09-17 | 2003-11-12 | 가부시끼가이샤 도시바 | Color picture tube |
| KR100432114B1 (en) * | 1999-04-28 | 2004-05-17 | 가부시키가이샤 히타치세이사쿠쇼 | Color cathode-ray tube |
| KR100447657B1 (en) * | 2002-01-23 | 2004-09-07 | 엘지.필립스디스플레이(주) | Transposed Scan Type Color-CRT |
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| JPS6373849U (en) * | 1986-10-31 | 1988-05-17 | ||
| KR100405235B1 (en) * | 1998-09-17 | 2003-11-12 | 가부시끼가이샤 도시바 | Color picture tube |
| KR100432114B1 (en) * | 1999-04-28 | 2004-05-17 | 가부시키가이샤 히타치세이사쿠쇼 | Color cathode-ray tube |
| KR100447657B1 (en) * | 2002-01-23 | 2004-09-07 | 엘지.필립스디스플레이(주) | Transposed Scan Type Color-CRT |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0364982B2 (en) | 1991-10-09 |
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