JPH046116Y2 - - Google Patents
Info
- Publication number
- JPH046116Y2 JPH046116Y2 JP1982060655U JP6065582U JPH046116Y2 JP H046116 Y2 JPH046116 Y2 JP H046116Y2 JP 1982060655 U JP1982060655 U JP 1982060655U JP 6065582 U JP6065582 U JP 6065582U JP H046116 Y2 JPH046116 Y2 JP H046116Y2
- Authority
- JP
- Japan
- Prior art keywords
- cathode
- support structure
- wehnelt
- electron gun
- cathode support
- 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
Links
- 229910052751 metal Inorganic materials 0.000 claims description 17
- 239000002184 metal Substances 0.000 claims description 17
- 238000010894 electron beam technology Methods 0.000 description 8
- 229910000792 Monel Inorganic materials 0.000 description 6
- 230000001965 increasing effect Effects 0.000 description 6
- 230000035939 shock Effects 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 4
- 229910000833 kovar Inorganic materials 0.000 description 4
- 230000005855 radiation Effects 0.000 description 3
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 229910052750 molybdenum Inorganic materials 0.000 description 2
- 239000011733 molybdenum Substances 0.000 description 2
- 229910052715 tantalum Inorganic materials 0.000 description 2
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 238000005219 brazing Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Microwave Tubes (AREA)
Description
【考案の詳細な説明】
本考案は電子ビーム管用の電子銃構体のウエネ
ルト及びカソードの支持構造に関するものであ
る。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a Wehnelt and cathode support structure of an electron gun assembly for an electron beam tube.
電子ビーム管用の電子銃構体に於て、ウエネル
ト及びカソードは電子を放出し、且つ電子ビーム
を形成する最も重要な部位である。従つて部品の
寸法精度及び組立精度は非常に高く、その上電子
銃構体部に加わる振動、衝撃に対して強度が強く
しかもカソードの加熱効率を高めヒータの消費電
力をできるだけ低くする必要がある。ここにウエ
ネルト及びカソードの支持構造の従来例を第１図
を用いて説明する。第１図は所謂スタツク形の電
子銃構体で封入皿８，１３，１４，１５，１６と
セラミツク１７，１８，１９，２０，２１，２２
を交互に積層しろう付けした真空外囲器を持ち、
カソードとウエネルトは同電位である。カソード
１はモリブデン或はタンタル等の融点が高い金属
よりなる３本の金属細線６によつてモネル等の金
属よりなる円筒形のカソード支持構体５に溶接さ
れ、カソード支持構体５は、やはりモネル等の金
属よりなる薄肉の円筒形のカソード支持構体４に
ろう付け又は溶接されている。カソード支持構体
４は銅又はモネル等の金属よりなるウエネルト２
にろう付けされている。更にウエネルト２はモネ
ル又はコバール等の金属よりなる薄肉の円筒形の
ウエネルト支持構体３にろう付けされ、ウエネル
ト支持構体３はコバールよりなる封入皿８に溶接
されている。ウエネルト支持構体３及びカソード
支持構体４はウエネルト２及びカソード１の支持
固定だけでなく、カソード１からの熱輻射を遮蔽
しカソード１からの輻射による熱の逃げを少なく
してカソード１の加熱効率を高める働きをも有し
ている。又、金属細線６からカソード支持構体
５，４、ウエネルト２、ウエネルト支持構体３及
び封入皿８を通つてカソード１の熱は伝導により
外部へ逃げて行くのでヒータ電力を少なくする為
にカソード支持構体４及びウエネルト支持構体３
はできるだけ肉厚を薄くして熱抵抗を大きくする
必要がある。又、カソード１とカソード支持構体
５の間の接続に３本の金属細線６を使用して熱抵
抗を大きくしている。しかしながら、この様にし
て熱抵抗を大きくしようとすると必然的に強度を
犠牲にすることになり振動、衝撃に対してカソー
ド、ウエネルトは弱くなる。又、逆に強度を大き
くしようとすると熱抵抗が小さくなるためヒータ
電力が大きくなり電子ビーム管の総合効率を低下
させるという欠点を有していた。 In an electron gun assembly for an electron beam tube, the Wehnelt and cathode are the most important parts that emit electrons and form an electron beam. Therefore, it is necessary that the dimensional accuracy and assembly accuracy of the parts be extremely high, that the electron gun body be strong against vibrations and shocks, and that the heating efficiency of the cathode be increased and the power consumption of the heater be as low as possible. Here, a conventional example of a Wehnelt and cathode support structure will be explained with reference to FIG. Figure 1 shows a so-called stack-type electron gun structure, which includes enclosure plates 8, 13, 14, 15, 16 and ceramics 17, 18, 19, 20, 21, 22.
It has a vacuum envelope made of alternately laminated and brazed
The cathode and Wehnelt are at the same potential. The cathode 1 is welded to a cylindrical cathode support structure 5 made of a metal such as Monel by three thin metal wires 6 made of a metal with a high melting point such as molybdenum or tantalum. It is brazed or welded to a thin-walled cylindrical cathode support structure 4 made of metal. The cathode support structure 4 is made of metal such as copper or monel.
It is soldered to. Further, the Wehnelt 2 is brazed to a thin-walled cylindrical Wehnelt support structure 3 made of metal such as Monel or Kovar, and the Wehnelt support structure 3 is welded to an enclosure plate 8 made of Kovar. The Wehnelt support structure 3 and the cathode support structure 4 not only support and fix the Wehnelt 2 and the cathode 1, but also shield thermal radiation from the cathode 1, reduce the escape of heat due to radiation from the cathode 1, and improve the heating efficiency of the cathode 1. It also has an enhancing effect. In addition, the heat of the cathode 1 escapes to the outside by conduction from the thin metal wire 6 through the cathode support structures 5, 4, Wehnelt 2, Wehnelt support structure 3, and the enclosure dish 8. 4 and Wehnelt support structure 3
It is necessary to make the wall thickness as thin as possible to increase thermal resistance. Furthermore, three thin metal wires 6 are used to connect the cathode 1 and the cathode support structure 5 to increase thermal resistance. However, if the thermal resistance is increased in this way, the strength will inevitably be sacrificed, and the cathode and Wehnelt will become weak against vibrations and shocks. On the other hand, if an attempt is made to increase the strength, the thermal resistance decreases, resulting in an increase in heater power, which has the disadvantage of lowering the overall efficiency of the electron beam tube.
本考案は電子ビーム管用の電子銃構体のウエネ
ルト及びカソードの支持構造を改良することによ
り振動、衝撃に対する強度を強く、且つカソード
の加熱効率を高く保つことのでる電子銃構体を提
供するものである。 The present invention provides an electron gun assembly for an electron beam tube that has strong strength against vibrations and shocks and can maintain high cathode heating efficiency by improving the Wehnelt and cathode support structure of the electron gun assembly for an electron beam tube. .
本考案は、電子ビーム管用の電子銃構体に於て
ウエネルト及びカソードを支持固定する支持構体
のうち少くとも１個の円周方向に沿つて凹凸を有
する横断面を持つ金属製の薄肉の筒状体からなる
ことを特徴としている。 The present invention provides a support structure for supporting and fixing a Wehnelt and a cathode in an electron gun structure for an electron beam tube. It is characterized by consisting of a body.
以下、本考案について詳細な説明を行なう。第
２図は所謂スタツク形のカソード、ウエネルト同
電位の電子銃構体に本考案を実施した例である。
カソード１はタンタル又はモリブデンの如き金属
からなるカソード支持構体１２に溶接されている
が、カソード支持構体１２は第５図にその横断面
を示したが、円周方向に沿つた凹凸を有する金属
製の薄肉の筒状体であり、内側に凹んだ部分がカ
ソード１に溶接され、外側に凸になつた部分が連
結部材１１に溶接されている。連結部材１１はモ
ネルの如き金属からなる円環であり、第４図に示
すようにカソード支持構体１２と同様の横断面を
有するコバール又はモネルの如き金属よりなるカ
ソード支持構体１０の内側に凹んだ部分にろう付
け又は溶接されている。カソード支持構体１０の
外側に凸なる部分がウエネルト２にろう付けされ
ている。ウエネルト２はコバール又はモネルの如
き金属よりなり、第３図に示すようにカソード支
持構体１２と同様の横断面を有するウエネルト支
持構体９の内側に凹んだ部分にろう付けされてい
る。ウエネルト支持構体９の外側に凸なる部分は
封入皿８′に溶接されている。ウエネルト支持構
体９及びカソード支持構体１０，１２は夫々横断
面が円周方向に沿つた凹凸を有しているので、単
なる円筒よりも部品の肉厚を薄くしても十分な強
度を維持できる。なぜなら、凹凸を設けることに
より等価的に肉厚が厚くなつたと同じ作用をする
ため、単なる円筒でウエネルトやカソードの支持
構体を作つた場合に比べ振動や衝撃に対して強く
なるからである。そして、肉厚を薄くした分だけ
熱抵抗を大きくできる。又、ウエネルト支持構体
９と封入皿８′、ウエネルト２、そしてカソード
支持構体１０とウエネルト２、連結部材１１、更
に、カソード支持構体１２とカソード１、連結部
材１１の各々のろう付け、溶接は各部品の円周全
般にわたつて行なうのではなく各支持構体の凹凸
と相手部品の接触部で行なうのでその接触部分の
面積は各支持構体に単なる円筒を使用したときよ
りも非常に小さくなり、接触部に於ける熱抵抗は
非常に大きくなる。３本の金属細線に比べてカソ
ード支持構体１２の熱抵抗は多少小さくなるがカ
ソード支持構体１０とウエネルト支持構体９を含
めた全体の熱抵抗は従来形より大きくすることが
できる。さらにウエネルト支持構体９及びカソー
ド支持構体１０の表面積が単なる円筒部品の場合
よりも大きくなりカソードからの熱輻射をより多
く反射するので熱抵抗の増大と相まつてカソード
の加熱効率を高めヒータ電力を低くすることがで
きる。又、従来形の３本の金属細線によるカソー
ド支持に比べてカソードの支持強度は大きくな
る。従つて、本考案により、ウエネルト及びカソ
ードの振動、衝撃に対する強度は大きくなり、し
かもヒータの消費電力のより少ない電子銃構体を
提供できる。 The present invention will be explained in detail below. FIG. 2 shows an example in which the present invention is applied to an electron gun assembly having a so-called stack type cathode and a Wehnelt-like potential.
The cathode 1 is welded to a cathode support structure 12 made of metal such as tantalum or molybdenum, and the cathode support structure 12, whose cross section is shown in FIG. The inwardly concave portion is welded to the cathode 1, and the outwardly convex portion is welded to the connecting member 11. The connecting member 11 is a circular ring made of metal such as Monel, and is recessed inside the cathode support structure 10 made of metal such as Kovar or Monel and has the same cross section as the cathode support structure 12, as shown in FIG. The parts are brazed or welded. An outwardly projecting portion of the cathode support structure 10 is brazed to the Wehnelt 2. The Wehnelt 2 is made of metal such as Kovar or Monel and is brazed to an inwardly recessed portion of a Wehnelt support structure 9 having a cross section similar to that of the cathode support structure 12, as shown in FIG. The outwardly projecting portion of the Wehnelt support structure 9 is welded to the containment pan 8'. Since the Wehnelt support structure 9 and the cathode support structures 10 and 12 each have an uneven cross section along the circumferential direction, sufficient strength can be maintained even if the thickness of the parts is made thinner than that of a simple cylinder. This is because the unevenness has the same effect as increasing the wall thickness, making it more resistant to vibrations and shocks than when the Wehnelt or cathode support structure is made of a simple cylinder. Furthermore, the thermal resistance can be increased by reducing the wall thickness. In addition, the brazing and welding of the Wehnelt support structure 9, the enclosure plate 8', the Wehnelt 2, the cathode support structure 10, the Wehnelt 2, the connecting member 11, and the cathode support structure 12, the cathode 1, and the connecting member 11 are performed individually. The contact is not made over the entire circumference of the part, but at the contact area between the unevenness of each support structure and the mating part, so the area of the contact area is much smaller than when a simple cylinder is used for each support structure, and the contact is made. The thermal resistance in the area becomes very large. Although the thermal resistance of the cathode support structure 12 is somewhat smaller than that of three thin metal wires, the overall thermal resistance including the cathode support structure 10 and Wehnelt support structure 9 can be made larger than that of the conventional type. Furthermore, the surface areas of the Wehnelt support structure 9 and the cathode support structure 10 are larger than in the case of simple cylindrical parts, and they reflect more heat radiation from the cathode, which increases the thermal resistance and increases the heating efficiency of the cathode and lowers the heater power. can do. Furthermore, the support strength of the cathode is increased compared to the conventional cathode support using three thin metal wires. Therefore, according to the present invention, it is possible to provide an electron gun assembly in which the strength of the Wehnelt and cathode against vibrations and shocks is increased, and the power consumption of the heater is lower.
本考案は、電子ビーム管用の電子銃構体のウエ
ネルト支持構体及びカソード支持構体のうち少な
くとも１個が円周方向に沿つて凹凸を有する横断
面を持つ金属製の薄肉の筒状体からなるという簡
単な構造によつて振動、衝撃に対する強度が大き
くしかもヒータの消費電力の少ない電子銃構体を
提供することができるという特徴を有している。 The present invention is simple in that at least one of the Wehnelt support structure and the cathode support structure of an electron gun structure for an electron beam tube consists of a thin metal cylindrical body having a cross section with unevenness along the circumferential direction. Due to this structure, it is possible to provide an electron gun assembly that has high strength against vibrations and shocks and consumes less power for the heater.
第１図はスタツク形の電子銃構体の従来例、第
２図は本考案の実施例の縦断面図であり、第３
図、第４図、第５図は夫々ウエネルト支持構体
９、カソード支持構体１０，１２の横断面図であ
る。第６図は第２図のＡ−A′断面図である。
１……カソード、２……ウエネルト、３，９…
…ウエネルト支持構体、４，５，１０，１２……
カソード支持構体、６……金属細線、７……ヒー
タ、８，８′，１３，１４，１５，１６……封入
皿、１１……連結部材、１７，１８，１９，２
０，２１，２２……セラミツク。
FIG. 1 is a conventional example of a stack-type electron gun structure, FIG. 2 is a vertical cross-sectional view of an embodiment of the present invention, and FIG.
4 and 5 are cross-sectional views of the Wehnelt support structure 9 and the cathode support structures 10 and 12, respectively. FIG. 6 is a sectional view taken along line A-A' in FIG. 1...Cathode, 2...Wehnelt, 3,9...
...Wehnelt support structure, 4, 5, 10, 12...
Cathode support structure, 6... Thin metal wire, 7... Heater, 8, 8', 13, 14, 15, 16... Enclosure plate, 11... Connection member, 17, 18, 19, 2
0, 21, 22... Ceramic.
Claims (1)
ソード支持構体のうち少なくとも１個が円周方向
に沿つて両面に凹凸を有する横断面を持つ金属製
の薄肉の筒状体からなることを特徴とする電子銃
構体。 The electron gun structure is characterized in that at least one of the Wehnelt support structure and the cathode support structure is made of a thin metal cylindrical body having a cross section with unevenness on both sides along the circumferential direction. Electron gun structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6065582U JPS58162553U (en) | 1982-04-26 | 1982-04-26 | electron gun structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6065582U JPS58162553U (en) | 1982-04-26 | 1982-04-26 | electron gun structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58162553U JPS58162553U (en) | 1983-10-29 |
| JPH046116Y2 true JPH046116Y2 (en) | 1992-02-20 |
Family
ID=30070890
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6065582U Granted JPS58162553U (en) | 1982-04-26 | 1982-04-26 | electron gun structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58162553U (en) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5395762U (en) * | 1977-01-07 | 1978-08-04 |
-
1982
- 1982-04-26 JP JP6065582U patent/JPS58162553U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58162553U (en) | 1983-10-29 |
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