JPH0630224B2 - Cathode ray tube - Google Patents
Cathode ray tubeInfo
- Publication number
- JPH0630224B2 JPH0630224B2 JP58241952A JP24195283A JPH0630224B2 JP H0630224 B2 JPH0630224 B2 JP H0630224B2 JP 58241952 A JP58241952 A JP 58241952A JP 24195283 A JP24195283 A JP 24195283A JP H0630224 B2 JPH0630224 B2 JP H0630224B2
- Authority
- JP
- Japan
- Prior art keywords
- contact spring
- contact
- ray tube
- cathode ray
- inner shield
- 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.)
- Expired - Lifetime
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
- H01J29/02—Electrodes; Screens; Mounting, supporting, spacing or insulating thereof
- H01J29/06—Screens for shielding; Masks interposed in the electron stream
- H01J29/07—Shadow masks for colour television tubes
Landscapes
- Electrodes For Cathode-Ray Tubes (AREA)
Description
【発明の詳細な説明】 〔発明の利用分野〕 本発明は陰極線管に係わり、特にバルブ内に設けられた
インナーシールドの構成に関するものである。Description: FIELD OF THE INVENTION The present invention relates to a cathode ray tube, and more particularly to a structure of an inner shield provided in a bulb.
この種のインナーシールドは、一般に板厚の薄い例えば
ステンレス板をプレス成形などによりフアンネル部とほ
ぼ同等の形状に形成され、大口径部側はシヤドウマスク
フレーム固定配置され、小口径部側はフアンネル部内面
形状に沿つてネック部方向に開口され、電子ビームの外
部磁界による影響を緩和させる機能を有している。This kind of inner shield is generally formed by pressing a thin plate, for example, a stainless steel plate, into a shape that is almost the same as the funnel portion.The large diameter side is fixedly arranged on the shear mask frame, and the small diameter side is the funnel side. The opening is formed along the shape of the inner surface of the portion toward the neck portion, and has a function of reducing the influence of the external magnetic field of the electron beam.
第１図はカラー陰極線管の部分断面正面図である。同図
において、１は内面にけい光膜が形成されたパネル部、
２はネック部に電子銃が収納されたフアンネル部、３は
パネル部１に設けられたピン４に装着されたシヤドウマ
スク、５はシヤドウマスク３の周辺部に固定されたシヤ
ドウマスク３の支持フレーム、６はフレーム５にその基
部が固定されたコンタクトスプリング、７はフレーム５
にその大口径端側が半固定されたインナーシールド、８
はフアンネル部２の内面に塗布された黒鉛などからなる
内装黒鉛膜、９はパネル部１とフアンネル部２とを接合
するフリツトガラスであり、コンタクトスプリング６の
先端部はその弾性力によつて内装黒鉛膜８に電気的に接
触しており、インナーシールド７の小口径部側はフアン
ネル部２の内面に沿つて配置されている。FIG. 1 is a partial sectional front view of a color cathode ray tube. In the figure, 1 is a panel portion having a fluorescent film formed on its inner surface,
2 is a funnel part in which an electron gun is stored in the neck part, 3 is a shadow mask attached to a pin 4 provided on the panel part, 5 is a support frame for the shadow mask 3 fixed to the peripheral part of the shadow mask 3, and 6 is A contact spring whose base is fixed to the frame 5, 7 is the frame 5
Inner shield with semi-fixed large diameter end side, 8
Is an interior graphite film made of graphite or the like applied to the inner surface of the funnel portion 2, 9 is a fritted glass that joins the panel portion 1 and the funnel portion 2, and the tip of the contact spring 6 has an interior graphite due to its elastic force. It is in electrical contact with the membrane 8, and the small-diameter portion side of the inner shield 7 is arranged along the inner surface of the funnel portion 2.
また、第２図はコンタクトスプリング６およびインナー
シールド７の取付構造を示す要部断面図である。同図に
おいて、コンタクトスプリング６はフレーム５に溶接固
定され、その上にインナーシールド７の基部が図示しな
い係止スプリングにより半固定されている。そして、コ
ンタクトスプリング６はフアンネル部２の内面に被着形
成された内装黒鉛膜８に約15gの接圧で接触してシヤド
ウマスク３に所定の高電圧を供給している。Further, FIG. 2 is a cross-sectional view of an essential part showing a mounting structure of the contact spring 6 and the inner shield 7. In the figure, the contact spring 6 is welded and fixed to the frame 5, and the base portion of the inner shield 7 is semi-fixed thereon by a not-shown locking spring. The contact spring 6 contacts the internal graphite film 8 formed on the inner surface of the funnel portion 2 with a contact pressure of about 15 g to supply a predetermined high voltage to the shadow mask 3.
しかしながら、前述した構成において、インナーシール
ド７は、マスクフレーム５に半固定されかつ剛体でない
ために外部からの衝撃により振動しやすい構造となつて
いる。したがつて、製造工程中のハンドリングあるいは
加工時の衝撃などにより極めて簡単に振動することにな
る。また、コンタクトスプリング６はマスクフレーム５
上および折れ曲り部でインナーシールド７と接触してお
り、前述した衝撃によるインナーシールド７の振動と共
振してコンタクトスプリング６が振動し、内装黒鉛膜８
の接触部を削ることになる。これによつて削られた黒鉛
は電子銃等に付着し、耐電圧特性を著しく低下させると
いう問題があつた。However, in the above-mentioned configuration, the inner shield 7 is semi-fixed to the mask frame 5 and is not a rigid body, so that the inner shield 7 is easily vibrated by an external impact. Therefore, the vibration is extremely easy due to the handling during the manufacturing process or the impact during processing. Further, the contact spring 6 is the mask frame 5
The upper and bent portions are in contact with the inner shield 7, and the contact spring 6 vibrates in resonance with the vibration of the inner shield 7 due to the impact described above, and the interior graphite film 8
The contact part of will be scraped. Due to this, the graphite scraped off adheres to the electron gun and the like, and there is a problem that the withstand voltage characteristic is significantly deteriorated.
したがつて本発明は前述した従来の問題に鑑みてなされ
たものであり、その目的とするところは、コンタクトス
プリングの共振を防止して耐電圧特性を向上させた陰極
線管を提供することにある。Therefore, the present invention has been made in view of the above-mentioned conventional problems, and an object thereof is to provide a cathode ray tube in which resonance of a contact spring is prevented and withstand voltage characteristics are improved. .
このような目的を達成するために本発明はほぼ四角錐台
状をなすインナーシールドのコンタクトスプリングと対
向する側面部にこのコンタクトスプリングが接触しない
ようにその側面部に、さらにコンタクトスプリングの基
部が前記四角錐台の底部に接触しないようにこの底部
に、凹部を設けるものである。In order to achieve such an object, the present invention provides the side surface of the inner shield having a substantially truncated pyramid shape so as not to contact the side surface of the inner shield facing the contact spring, and further the base of the contact spring is provided as described above. A recess is provided on the bottom of the truncated pyramid so as not to contact the bottom.
次に図面を用いて本発明の実施例を詳細に説明する。 Next, embodiments of the present invention will be described in detail with reference to the drawings.
第３図は本発明による陰極線管の一例を示すコンタクト
スプリングおよびほぼ四角錐台状をなすインナーシール
ドの取付構造を示す要部斜視図、第４図は第３図におけ
るコンタクトスプリング６を通る断面の要部を示す図で
ある。これらの図において、インナーシールド７′のコ
ンタクトスプリング６と対向する底部１０に切り欠き部
などの第１の凹部7aが形成され、さらにコンタクトスプ
リング６の折れ曲り部と対向する部分に第２の凹部7bが
それぞれ形成され、インナーシールド７′とコンタクト
スプリング６とが接触しない構成となつている。3 is a perspective view of a contact spring showing an example of a cathode ray tube according to the present invention and a mounting structure of an inner shield having a substantially truncated pyramid shape, and FIG. 4 is a sectional view taken through the contact spring 6 in FIG. It is a figure which shows the principal part. In these figures, a first recess 7a such as a notch is formed in the bottom portion 10 of the inner shield 7'which faces the contact spring 6, and a second recess 7a is formed in a portion of the inner shield 7'which faces the bent portion. 7b are respectively formed so that the inner shield 7'and the contact spring 6 do not come into contact with each other.
このような構成によれば、外部からの衝撃によるインナ
ーシールド７の振動がコンタクトスプリング６に伝達さ
れなくなるので、コンタクトスプリング６の共振が皆無
となり、したがつて、内装黒鉛膜８（第２図参照）の接
触部の削れを防止することができる。According to this structure, the vibration of the inner shield 7 due to the impact from the outside is not transmitted to the contact spring 6, so that the contact spring 6 does not resonate at all, and accordingly, the interior graphite film 8 (see FIG. 2). It is possible to prevent the contact part from being scraped.
以上説明したように本発明によれば、コンタクトスプリ
ングの共振が皆無となり、内装黒鉛膜の削れが防止でき
るので、耐電圧特性が大幅に向上できるという極めて優
れた効果が得られる。As described above, according to the present invention, resonance of the contact spring is completely eliminated and abrasion of the interior graphite film can be prevented, so that an extremely excellent effect that the withstand voltage characteristic can be significantly improved can be obtained.
第１図はカラー陰極線管の部分断面正面図、第２図は従
来のコンタクトスプリングおよびインナーシールドの取
付構造の一例を示すカラー陰極線管の要部断面図、第３
図は本発明による陰極線管の一例を示すコンタクトスプ
リングおよびインナーシールドの取付構造の要部斜視
図、第４図は第３図のコンタクトスプリングを通る要部
断面図である。 １……パネル部、２……フアンネル部、３……シヤドウ
マスク、４……ピン、５……フレーム、６……コンタク
トスプリング、７，７′……インナーシールド、7a……
第１の凹部、7b……第２の凹部、８……内装黒鉛膜、９
……フリツトガラス、10……インナーシールドの底部。FIG. 1 is a partial cross-sectional front view of a color cathode ray tube, FIG. 2 is a cross-sectional view of a main part of a color cathode ray tube showing an example of a conventional contact spring and inner shield mounting structure, and FIG.
FIG. 4 is a perspective view of an essential part of a contact spring and inner shield mounting structure showing an example of a cathode ray tube according to the present invention, and FIG. 4 is a sectional view of the essential part passing through the contact spring of FIG. 1 ... Panel part, 2 ... Funnel part, 3 ... Sheath mask, 4 ... Pin, 5 ... Frame, 6 ... Contact spring, 7, 7 '... Inner shield, 7a ...
1st recessed part, 7b ... 2nd recessed part, 8 ... Interior graphite film, 9
...... Flit glass, 10 ... bottom of inner shield.
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭50−128462（ＪＰ，Ａ) 特開 昭57−168452（ＪＰ，Ａ) 実開 昭53−106662（ＪＰ，Ｕ) 実開 昭52−81042（ＪＰ，Ｕ) ─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-50-128462 (JP, A) JP-A-57-168452 (JP, A) Actual opening Sho-53-106662 (JP, U) Actual opening Sho-52- 81042 (JP, U)
Claims (1)
つ大口径部側をシャドウマスクを構成する支持フレーム
に固定する底部を有する、ほぼ四角錐台状をなすインナ
ーシールドと、 前記ファンネル部内壁面に形成された内装黒鉛膜に弾性
部を接触させ、かつ基部を前記支持フレームに固定さ
れ、前記ファンネル部内壁面と前記四角錐台の外壁面と
の間の空間に配設されたコンタクトスプリングとを、少
なくとも具備してなる陰極線管において、 前記コンタクトスプリングと対向する前記四角錐台の側
面部に前記コンタクトスプリングが接触しないように該
側面部に、さらに前記コンタクトスプリングの前記基部
が前記四角錐台の底部に接触しないように該底部に、凹
部を設けたことを特徴とする陰極線管。1. An inner shield, which is arranged along the inner wall surface of the funnel portion and has a bottom portion for fixing the large-diameter portion side to a support frame forming a shadow mask, and which has a substantially truncated pyramid shape, and an inner wall surface of the funnel portion. An elastic portion is brought into contact with the formed internal graphite film, and the base portion is fixed to the support frame, and a contact spring disposed in the space between the inner wall surface of the funnel portion and the outer wall surface of the quadrangular pyramid, In a cathode ray tube comprising at least the side surface of the truncated pyramid facing the contact spring, so that the contact spring does not contact the side surface, and the base of the contact spring is the bottom of the truncated pyramid. A cathode ray tube, characterized in that a recess is provided on the bottom so as not to come into contact with the cathode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58241952A JPH0630224B2 (en) | 1983-12-23 | 1983-12-23 | Cathode ray tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58241952A JPH0630224B2 (en) | 1983-12-23 | 1983-12-23 | Cathode ray tube |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60136131A JPS60136131A (en) | 1985-07-19 |
| JPH0630224B2 true JPH0630224B2 (en) | 1994-04-20 |
Family
ID=17082008
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58241952A Expired - Lifetime JPH0630224B2 (en) | 1983-12-23 | 1983-12-23 | Cathode ray tube |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0630224B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6157118A (en) * | 1998-09-08 | 2000-12-05 | Thomson Licensing S.A. | Cathode-ray tube contact spring |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50128462A (en) * | 1974-03-29 | 1975-10-09 | ||
| JPS5281042U (en) * | 1975-12-15 | 1977-06-16 | ||
| JPS5752857Y2 (en) * | 1977-02-02 | 1982-11-16 |
-
1983
- 1983-12-23 JP JP58241952A patent/JPH0630224B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60136131A (en) | 1985-07-19 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |