JPH0411977B2 - - Google Patents
Info
- Publication number
- JPH0411977B2 JPH0411977B2 JP57053864A JP5386482A JPH0411977B2 JP H0411977 B2 JPH0411977 B2 JP H0411977B2 JP 57053864 A JP57053864 A JP 57053864A JP 5386482 A JP5386482 A JP 5386482A JP H0411977 B2 JPH0411977 B2 JP H0411977B2
- Authority
- JP
- Japan
- Prior art keywords
- electrode
- grid electrode
- recess
- intermediate electrode
- electron gun
- 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
- H01J29/46—Arrangements of electrodes and associated parts for generating or controlling the ray or beam, e.g. electron-optical arrangement
- H01J29/48—Electron guns
- H01J29/485—Construction of the gun or of parts thereof
Landscapes
- Image-Pickup Tubes, Image-Amplification Tubes, And Storage Tubes (AREA)
Description
【発明の詳細な説明】
本発明は電子銃を構成する電極形状に係り、特
に組立精度が高く、機械的に強固な電極構体に関
する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an electrode shape constituting an electron gun, and particularly to an electrode structure that has high assembly accuracy and is mechanically strong.
撮像管等に用いられる電子銃は、カツプ状の電
極や浅くコイニングされた電極等から構成されて
おり、これらの電極群は適当な間隙を持つて絶縁
体ロツドにより固定されている。電極の枚数が増
えて第１格子電極と第２格子電極の間に中間電極
を有するような構造の電子銃では、各電極が近接
するために電極固定が不十分になり機械的に弱い
ものとなる。 Electron guns used in image pickup tubes and the like are composed of cup-shaped electrodes, shallowly coined electrodes, etc., and these electrode groups are fixed by insulating rods with appropriate gaps. In an electron gun with an increased number of electrodes and an intermediate electrode between the first grid electrode and the second grid electrode, each electrode is placed close to each other, making the electrodes insufficiently fixed and mechanically weak. Become.
第１図は従来の電子銃を示し、１は第１格子電
極、２は中間電極、３１は第２格子電極、４は絶
縁体ロツド、３０はビームデイスクサポートであ
る。第１格子電極１はカツプ状をなし、第２格子
電極３１も浅いカツプ状にコイニングされてい
る。しかし、中間電極２はデイスク状であるため
機械的強度が不足し、電極変形をおこしやすい。 FIG. 1 shows a conventional electron gun, in which 1 is a first grid electrode, 2 is an intermediate electrode, 31 is a second grid electrode, 4 is an insulator rod, and 30 is a beam disk support. The first grid electrode 1 has a cup shape, and the second grid electrode 31 is also coined into a shallow cup shape. However, since the intermediate electrode 2 is disk-shaped, it lacks mechanical strength and is susceptible to electrode deformation.
このように従来の電子銃においては種々の欠点
があつた。本発明の目的は、上記の中間電極を有
する電子銃において電極構体の形状を改善し、高
い組立精度が得られ、しかも機械的に強固な電極
固定ができる電子銃を提供することにある。 As described above, conventional electron guns have had various drawbacks. An object of the present invention is to provide an electron gun having the above-mentioned intermediate electrode in which the shape of the electrode structure is improved, high assembly accuracy can be obtained, and the electrode can be fixed mechanically firmly.
以下、本発明を図面を用いて詳細に説明する。 Hereinafter, the present invention will be explained in detail using the drawings.
第２図は本発明に係る一実施例である電子銃を
示す。１は第１格子電極、２１は中間電極、３２
は第２格子電極、４は絶縁体ロツドである。中間
電極２１は浅くコイニングされて１段の凹部を有
しており機械的強度を保つようにされており、ま
た第２格子電極３２には２段の同心状の凹部が形
成されコイニングされている。この２段目の凹部
の外径は中間電極２１の凹部の内径よりも小さく
形成されている。なお、各部の中心には陰極（図
示せず）から放射される電子ビームを通過させる
孔が形成されている。 FIG. 2 shows an electron gun that is an embodiment of the present invention. 1 is a first grid electrode, 21 is an intermediate electrode, 32
is a second grid electrode, and 4 is an insulator rod. The intermediate electrode 21 is shallowly coined and has a single-stage recess to maintain mechanical strength, and the second grid electrode 32 has two concentric recesses formed and coined. . The outer diameter of this second stage recess is smaller than the inner diameter of the recess of the intermediate electrode 21. Note that a hole is formed in the center of each part through which an electron beam emitted from a cathode (not shown) passes.
更に第３図により第２格子電極を２段凹形に形
成する効果を説明する。すなわち、中間電極に凹
部を形成するとその強度は増すが、第２格子電極
を従来の形状のままにしておくと組立時に不都合
が起きる。電子銃の組立法として一般的にはセン
ターピンとスペーサを用いる方法がとられる。第
３図イにおいて５及び６はスペーサを示し、各々
第１格子電極１と中間電極２１、および中間電極
２１と第２格子電極３２との間隙設定に挿入され
る。一般にプレス成形された電極には端部にあお
りを生じる。これを第３図においては点線で示し
てある。このあおり部はスペーサの挿入、除去に
際し不都合を生じない方向ににがしておく必要が
ある。スペーサ５に関しては中間電極２１のあお
りは第１格子電極側ににげており、間隙長S1、電
極長l1は高精度で設定できる。一方、スペーサ６
に関しては同様の原理からは第２格子電極のあお
りは中間電極とは反対側ににがす必要がある。こ
の様子を第３図ロに示す。しかしながら、第２格
子電極３１はビームデイスクサポート３０を設置
する必要があり、この点からあおりは中間電極側
ににがさざるを得ない。しかし、あおりを中間電
極側ににがすとスペーサ６ａが入らなくなる。こ
のように、第３図ロに示す従来の一段凹形の第２
格子電極３１では電極端部のあおりをにがすこと
が不可能となる。しかるに第３図イに示すよう
に、第２格子電極３２のごとく２段凹形とするこ
とにより、スペーサ６に関しても、またビームデ
イスクサポート３０に関しても不都合なくあおり
部をにがすことが可能となる。この結果、間隙長
S2、電極長l2，l3は高精度で設定できる。 Furthermore, the effect of forming the second grid electrode in a two-stage concave shape will be explained with reference to FIG. That is, forming a recess in the intermediate electrode increases its strength, but leaving the second grid electrode in its conventional shape causes problems during assembly. The general method for assembling an electron gun is to use a center pin and a spacer. In FIG. 3A, 5 and 6 indicate spacers, which are inserted into the gaps between the first grid electrode 1 and the intermediate electrode 21, and between the intermediate electrode 21 and the second grid electrode 32, respectively. Press-molded electrodes generally have flaps at their ends. This is shown in dotted lines in FIG. It is necessary to peel off this tilted portion in a direction that does not cause any inconvenience when inserting or removing the spacer. Regarding the spacer 5, the intermediate electrode 21 is tilted toward the first grid electrode, and the gap length S 1 and electrode length l 1 can be set with high precision. On the other hand, spacer 6
From the same principle, the second grid electrode must be tilted to the opposite side from the intermediate electrode. This situation is shown in Figure 3B. However, it is necessary to install the beam disk support 30 on the second grid electrode 31, and from this point of view, the tilting must be directed to the intermediate electrode side. However, if the flap is moved toward the intermediate electrode side, the spacer 6a cannot be inserted. In this way, the conventional single-stage concave second
In the grid electrode 31, it is impossible to prevent the tip of the electrode from tilting. However, as shown in FIG. 3A, by making the second grid electrode 32 concave in two stages, it is possible to remove the tilting portions of the spacer 6 and the beam disk support 30 without any inconvenience. Become. As a result, the gap length
S 2 and electrode lengths l 2 and l 3 can be set with high precision.
なお、中間電極２１と第２格子電極３２が接触
するのを防ぐため、第２格子電極３２の２段目の
凹部の外径を中間電極２１の凹部の内径よりも小
さく形成してある。 In order to prevent the intermediate electrode 21 and the second grid electrode 32 from coming into contact with each other, the outer diameter of the second stage recess of the second grid electrode 32 is made smaller than the inner diameter of the recess of the intermediate electrode 21.
以上説明したごとく、本発明によれば、中間電
極を有する電子銃を高精度で強固に組み立てるこ
とができるので、電子銃特性の性能バラツキを小
さく抑えることができる。 As described above, according to the present invention, an electron gun having an intermediate electrode can be assembled firmly with high precision, so that performance variations in electron gun characteristics can be suppressed to a small level.
第１図は従来の電子銃を示す断面図、第２図は
本発明の一実施例を示す断面図、第３図は効果を
説明するための組立時の断面図である。
１……第１格子電極、２１……中間電極、３
１，３２……第２格子電極、３０……ビームデイ
スクサポート、４……絶縁体ロツド、５，６……
スペーサ。
FIG. 1 is a sectional view showing a conventional electron gun, FIG. 2 is a sectional view showing an embodiment of the present invention, and FIG. 3 is a sectional view when assembled to explain the effect. 1...First grid electrode, 21...Intermediate electrode, 3
1, 32... Second grid electrode, 30... Beam disk support, 4... Insulator rod, 5, 6...
Spacer.
Claims (1)
れらの両電極間に設置された中間電極とを絶縁体
ロツドで固定して成る電子銃において、上記第２
格子電極を２段の凹部を有する形状となし、上記
中間電極を上記第２格子電極の凹部と同一の向き
をなす１段の凹部を有する形状となし、上記第２
格子電極の２段目の凹部の外径を上記中間電極の
凹部の内径より小さくしたことを特徴とする電子
銃。1. In an electron gun in which at least a first grid electrode, a second grid electrode, and an intermediate electrode installed between these two electrodes are fixed with insulating rods, the second
The grid electrode has a shape having two recesses, the intermediate electrode has a shape having a single recess in the same direction as the recess of the second grid electrode, and the second
An electron gun characterized in that the outer diameter of the second stage recess of the grid electrode is smaller than the inner diameter of the recess of the intermediate electrode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5386482A JPS58172846A (en) | 1982-04-02 | 1982-04-02 | electron gun |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5386482A JPS58172846A (en) | 1982-04-02 | 1982-04-02 | electron gun |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58172846A JPS58172846A (en) | 1983-10-11 |
| JPH0411977B2 true JPH0411977B2 (en) | 1992-03-03 |
Family
ID=12954629
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5386482A Granted JPS58172846A (en) | 1982-04-02 | 1982-04-02 | electron gun |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58172846A (en) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5229164A (en) * | 1975-09-01 | 1977-03-04 | Toshiba Corp | Electron gun body and its method of production |
-
1982
- 1982-04-02 JP JP5386482A patent/JPS58172846A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58172846A (en) | 1983-10-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH0411977B2 (en) | ||
| KR920000939B1 (en) | Electron gun for braun tube | |
| JP2960501B2 (en) | Electron gun for cathode ray tube | |
| JPH05242842A (en) | Cathode structure of x-ray tube | |
| JPH0815057B2 (en) | Electron gun for color cathode ray tube | |
| JP3157856B2 (en) | Electron gun for cathode ray tube | |
| KR910005832Y1 (en) | Cathode structure for electron gun | |
| US2847599A (en) | Bulb spacer shield | |
| JPS6322607Y2 (en) | ||
| US4678965A (en) | Electron tube | |
| JPS5825552Y2 (en) | cathode structure | |
| JP2549476Y2 (en) | Traveling wave tube with multistage collector | |
| JP2609600B2 (en) | Electron gun assembly for cathode ray tube | |
| JPH0414840Y2 (en) | ||
| JPH0216537B2 (en) | ||
| JPH0117805Y2 (en) | ||
| JPS61131340A (en) | Electron gun structure for image pickup tube | |
| JPS5986650U (en) | Electron gun for cathode ray tube | |
| JPH0680579B2 (en) | Electron gun | |
| JPS5816296B2 (en) | Satsuzoukan | |
| JPS61220251A (en) | Electron gun for cathode-ray tube | |
| JPS5830693B2 (en) | electron gun | |
| JPH0447941B2 (en) | ||
| JPS59189535A (en) | Method for manufacturing electron tube | |
| JPS5947957U (en) | electron gun |