JP2646837B2 - Electron gun assembly for cathode ray tube - Google Patents
Electron gun assembly for cathode ray tubeInfo
- Publication number
- JP2646837B2 JP2646837B2 JP2295007A JP29500790A JP2646837B2 JP 2646837 B2 JP2646837 B2 JP 2646837B2 JP 2295007 A JP2295007 A JP 2295007A JP 29500790 A JP29500790 A JP 29500790A JP 2646837 B2 JP2646837 B2 JP 2646837B2
- Authority
- JP
- Japan
- Prior art keywords
- electrode
- cathode
- ray tube
- cathode ray
- electron
- 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 - Fee Related
Links
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、陰極線電子銃構体の改良に関し、動作中の
G1電極の熱変形を改善した形状に関するものである。Description: FIELD OF THE INVENTION The present invention relates to the improvement of a cathode ray electron gun assembly, and
It relates improved shape thermal deformation in G 1 electrode.
従来、第２図に示すように、陰極線管に使用されてい
る電子銃電極構体のうち、G1電極は、一般に板厚が0.2
〜0.3mm程度のステンレス材又はFe−Ni合金材をプレス
成形し、数個の放射電子通過孔３の周囲に動作中の過度
な熱変形を防止し更に放射電子通過孔３を有する平面部
の平面度を保持するために環状の突出部４を形成してい
る。Conventionally, as shown in FIG. 2, of the electron gun electrode structure used in the cathode ray tube, G 1 electrode, generally a thickness of 0.2
A stainless steel material or Fe-Ni alloy material of about 0.3 mm is press-formed to prevent excessive thermal deformation during operation around several radiation electron passing holes 3 and to form a flat part having the radiation electron passing holes 3. An annular projection 4 is formed to maintain flatness.
また電子銃を形成する各電極構体を保持する複数の溶
融されたビードガラス支柱を各電極構体のフランジ部に
埋設しているが、この埋設時の加圧力により、特にG1電
極の放射電子通過孔面２の変形を防止するために前記環
状突出部４の高さは任意に設定していた。Also although embedded a plurality of molten glass bead struts holding the electrode structure to form the electron gun to the flange portion of the electrode structure, the pressure applied during this embedding, particularly emission electron passage in G 1 electrode The height of the annular projection 4 has been set arbitrarily in order to prevent deformation of the hole surface 2.
上述した従来のG1電極構体においては、第２図に示す
数個の陰極電極１と、G1電極放射電子通過孔面２との間
隔ｄは、種々の特性から任意に設定されており、これら
の動作時には、陰極電極１内に挿入されているヒータの
熱により陰極電極１が加熱され、G1電極放射電子通過孔
面２に対するＡ方向に膨張することにより、設定間隔ｄ
は減少する傾向となる。また陰極電極１からの輻射熱に
より、G1電極放射電子通過孔面２も熱膨張を起こし、陰
極電極１と同一方向Ａに変化する。この際、陰極電極１
とG1電極放射電子通過孔面２との熱膨張には、多少の時
間的ズレが生じるとともに双方の熱膨張による変化量に
バラツキが生じ、間隔ｄは動作初期から約15〜20分間は
安定せず、第３図の如くカソード電流（以降IKという）
の立ち上り推移がｘ又はｙの如く特性を示していた。In the above-described conventional G 1 electrode assembly, the distance d between the several cathode electrodes 1 shown in FIG. 2 and the G 1 electrode emission electron passage hole surface 2 is arbitrarily set from various characteristics, during these operations, the cathode electrode 1 is heated by the heat of the heater is inserted into the cathode electrode 1, by expanding in the direction a with respect to G 1 electrode emission electron passing hole surface 2, setting the distance d
Tends to decrease. And by heat radiated from the cathode electrode 1, G 1 electrode emission electron passing hole surface 2 also undergoes thermal expansion, changes in the cathode electrode 1 and the same direction A. At this time, the cathode electrode 1
G The thermal expansion of 1 and the electrode emission electron passing hole surface 2, variations occur in the amount of change due to both thermal expansion with some time lag occurs, the distance d is about 15-20 minutes from the beginning of the operation and stability Without, as shown in Fig. 3, cathode current (hereinafter referred to as IK)
The rising transition of the characteristic indicated characteristics such as x or y.
この動作初期のIK立ち上り特性は、画質輝度の不安定
の要因となり、陰極線管としての品位を低下させてい
た。The IK rising characteristic at the beginning of the operation causes unstable image quality and luminance, and deteriorates the quality as a cathode ray tube.
本発明の目的は、画質輝度の安定化を実現した陰極線
管用電子銃構体を提供することにある。SUMMARY OF THE INVENTION An object of the present invention is to provide an electron gun structure for a cathode ray tube which realizes stabilization of image quality and luminance.
前記目的を達成するため、本発明に係る陰極線管用電
子銃構体は、陰極線管のネック部内に封止される複数個
の楕円筒型電極を有し、数個の陰極電極と一定間隔で設
定されているG1電極の各放射電子通過孔の周囲に熱変形
防止用環状突出部を設けた電子銃構体であって、 前記環状突出部の高さＨを、前記G1電極の放射電子通
過孔面と陰極電極との相互の熱膨張量を考慮して、前記
放射電子通過面の径Ｄに対し、Ｈ＝（0.2〜0.25）Ｄの
範囲で選択し、カソード電流IK立ち上げ特性を早期安定
化するものである。To achieve the above object, an electron gun structure for a cathode ray tube according to the present invention has a plurality of elliptic cylindrical electrodes sealed in a neck portion of the cathode ray tube, and is set at a certain interval from several cathode electrodes. and has an electron gun assembly in which a for preventing thermal deformation annular projection around each emission electron passing holes in G 1 electrode, the height H of the annular projection, emission electron passing holes of the G 1 electrode In consideration of the mutual thermal expansion between the surface and the cathode electrode, the diameter D of the radiated electron passing surface is selected in the range of H = (0.2 to 0.25) D, and the cathode current IK rise characteristic is stabilized early. It becomes something.
数個のG1電極放射電子通過孔面の周囲に形成されてい
る環状突出部の高さをG1電極放射電子通過孔面の径に対
して0.2〜0.25倍に設定したことにより、陰極電極とG1
電極放射電子通過孔面との間隔を動作初期より短時間に
安定させる。By the height of the annular protrusion is formed around the several in G 1 electrode emission electron passing hole surface was set at 0.2 to 0.25 times the diameter in G 1 electrode emission electron passing hole surface, a cathode electrode And G 1
The distance between the electrode and the hole through which the emitted electrons pass is stabilized in a shorter time than the initial operation.
〔実施例〕 以下、本発明の一実施例を図により説明する。Embodiment An embodiment of the present invention will be described below with reference to the drawings.
第１図は、本発明の一実施例を示す一部断面図であ
る。FIG. 1 is a partial sectional view showing one embodiment of the present invention.
図において、G1電極放射電子通過孔面２の周囲に環状
突出部４が陰極電極１側に向けて突出形成されている。
この環状突出部４の高さＨは、G1電極放射電子通過孔３
を有しているG1電極放射電子通過孔面２の径Ｄに対し
て、（0.2〜0.25）×Ｄの範囲で設定されており、ま
た、G1電極放射電子通過孔面２に対応して陰極電極１が
任意の間隔ｄで設定されている。このG1電極放射電子通
過孔面２は、動作初期の陰極電極１からの輻射熱により
熱膨張を起こし、陰極電極１と反対方向ＡすなわちG2電
極（図示せず）方向に変化する。In the figure, the annular projection 4 is formed to protrude toward the cathode electrode 1 side around in G 1 electrode emission electron passing hole surface 2.
The height H of the annular projection 4, G 1 electrode emission electron passing holes 3
Against G 1 electrode emission diameter D of the electron passing hole surface 2 has a, (0.2 to 0.25) × is set in the range of D, also corresponding to the G 1 electrode emission electron passing hole surface 2 The cathode electrodes 1 are set at an arbitrary interval d. The G 1 electrode emission electron passing hole surface 2 undergoes thermal expansion by radiant heat from the initial operation of the cathode electrodes 1, (not shown) opposite the direction A i.e. G 2 electrode and cathode electrode 1 changes in direction.
この変化量を陰極電穀１の膨張量とのバランスをとる
ことが重要となり、実験によれば、G1電極放射電子通過
孔面２の径Ｄに対して環状突出部の高さＨが小さい場合
は、第３図のIK立ち上り特性ｘの状態となり、また、高
すぎると、ｙの特性となる。It is important to balance this variation with the amount of expansion of the cathode electrode 1. According to experiments, the height H of the annular projection is smaller than the diameter D of the G1 electrode radiation electron passage surface 2. In this case, the state of the IK rising characteristic x shown in FIG. 3 is obtained, and when it is too high, the characteristic becomes y.
そこで、本発明による環状突出部４の高さＨを前述の
（0.2〜0.25）×Ｄの範囲内に設定した。このことによ
り、IK立ち上り特性が第３図のIK立ち上り特性ｚの如く
短時間で安定した状態となった。Therefore, the height H of the annular projection 4 according to the present invention is set in the range of (0.2 to 0.25) × D described above. As a result, the IK rising characteristic was stabilized in a short time, like the IK rising characteristic z in FIG.
以上説明したように本発明によれば、動作初期時のG1
電極放射電子通過孔面と陰極電極との相互の熱膨張量の
バランスを得るために環状突出部高さを規定することに
より、高品位の陰極線管画質輝度特性を提供できるとい
う効果を有する。As described above, according to the present invention, G 1
By defining the height of the annular projection in order to obtain the balance of the mutual thermal expansion between the surface of the electrode emission electron passage hole and the cathode electrode, it is possible to provide a high quality cathode ray tube image quality and brightness characteristic.
第１図は、本発明の一実施例を示す一部断面図、第２図
は、従来例を示す一部断面図、第３図は、カソード電流
特性を示す図である。 １……陰極電極 ２……G1電極放射電子通過孔面 ３……G1電極放射電子通過孔 ４……環状突出部FIG. 1 is a partial cross-sectional view showing one embodiment of the present invention, FIG. 2 is a partial cross-sectional view showing a conventional example, and FIG. 3 is a diagram showing cathode current characteristics. 1 ...... cathode electrode 2 ...... G 1 electrode emission electron passing hole surface 3 ...... G 1 electrode emission electron passing hole 4 ...... annular projection
Claims (1)
の楕円筒型電極を有し、数個の陰極電極と一定間隔で設
定されているG1電極の各放射電子通過孔の周囲に熱変形
防止用環状突出部を設けた電子銃構体であって、 前記環状突出部の高さＨを、前記G1電極の放射電子通過
孔面と陰極電極との相互の熱膨張量を考慮して、前記放
射電子通過面の径Ｄに対し、Ｈ＝（0.2〜0.25）Ｄの範
囲で選択し、カソード電流IK立ち上げ特性を早期安定化
するものであることを特徴とする陰極線管用電子銃構
体。1. A has a plurality of elliptic cylinder type electrode to be sealed in a neck portion of a cathode ray tube, the periphery of each radiating electron passing apertures in G 1 electrode which is set at fixed intervals and several cathode electrodes to an electron gun assembly provided with the annular projection for preventing thermal deformation, the height H of the annular projection, in consideration of thermal expansion of the mutual and emission electron passing hole surface and the cathode electrode of the G 1 electrode The electron source for a cathode ray tube, wherein the diameter D of the radiated electron passage surface is selected in the range of H = (0.2 to 0.25) D to stabilize the start-up characteristic of the cathode current IK at an early stage. Gun body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2295007A JP2646837B2 (en) | 1990-10-31 | 1990-10-31 | Electron gun assembly for cathode ray tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2295007A JP2646837B2 (en) | 1990-10-31 | 1990-10-31 | Electron gun assembly for cathode ray tube |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04169042A JPH04169042A (en) | 1992-06-17 |
| JP2646837B2 true JP2646837B2 (en) | 1997-08-27 |
Family
ID=17815131
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2295007A Expired - Fee Related JP2646837B2 (en) | 1990-10-31 | 1990-10-31 | Electron gun assembly for cathode ray tube |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2646837B2 (en) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0254836A (en) * | 1988-08-19 | 1990-02-23 | Toshiba Corp | Cathode-ray tube |
| JPH02160343A (en) * | 1989-11-15 | 1990-06-20 | Toshiba Corp | Electron gun |
-
1990
- 1990-10-31 JP JP2295007A patent/JP2646837B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04169042A (en) | 1992-06-17 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |