JPH0511290U - Impregnated cathode structure - Google Patents

Impregnated cathode structure

Info

Publication number
JPH0511290U
JPH0511290U JP5979691U JP5979691U JPH0511290U JP H0511290 U JPH0511290 U JP H0511290U JP 5979691 U JP5979691 U JP 5979691U JP 5979691 U JP5979691 U JP 5979691U JP H0511290 U JPH0511290 U JP H0511290U
Authority
JP
Japan
Prior art keywords
impregnated cathode
impregnated
inner cylindrical
stepped portion
cathode structure
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.)
Pending
Application number
JP5979691U
Other languages
Japanese (ja)
Inventor
隆 中山
Original Assignee
関西日本電気株式会社
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 関西日本電気株式会社 filed Critical 関西日本電気株式会社
Priority to JP5979691U priority Critical patent/JPH0511290U/en
Publication of JPH0511290U publication Critical patent/JPH0511290U/en
Pending legal-status Critical Current

Links

Abstract

(57)【要約】 【目的】 含浸型カソードペレットの加熱効率を高め、
ヒーター寿命を延長した信頼性の高い含浸型カソード構
体を提供する。 【構成】 先端部を縮径して段差部8aをもうけた内方
筒状部8中へ、先端部を縮径して突出させ段差部7Aを
もうけた含浸型カソードペレット7を、段差部7a,8
a同志が密着するようにして挿着し溶接した含浸型カソ
ード構体。
(57) [Summary] [Purpose] To increase the heating efficiency of impregnated cathode pellets,
Provided is a highly reliable impregnated cathode structure with extended heater life. The impregnated cathode pellet 7 having a stepped portion 7A with a tip portion having a reduced diameter is projected into an inner cylindrical portion 8 having a stepped portion 8a having a reduced diameter portion. , 8
a An impregnated cathode structure in which the two are closely attached and welded.

Description

【考案の詳細な説明】[Detailed description of the device]

【0001】[0001]

【産業上の利用分野】[Industrial application]

この考案は、ブラウン管用電子銃に関し、特に含浸型カソードの構造に関する 。 The present invention relates to an electron gun for a cathode ray tube, and more particularly to the structure of an impregnated cathode.

【0002】[0002]

【従来の技術】[Prior Art]

含浸型カソード構体6は図2に示すように、従来、含浸型カソードペレット1 は、底板2を溶接により接続した内方筒状部3中に挿入し、溶接により固定され ている。内方筒状部3は、外方筒状部4と溶接されている。その外方筒状部4中 にヒーター5を挿入する構造となっている。 As shown in FIG. 2, the impregnated cathode structure 6 is conventionally fixed by welding by inserting an impregnated cathode pellet 1 into an inner cylindrical portion 3 to which a bottom plate 2 is connected by welding. The inner tubular portion 3 is welded to the outer tubular portion 4. A heater 5 is inserted into the outer tubular portion 4.

【0003】[0003]

【考案が解決しようとする課題】[Problems to be solved by the device]

ところで、上記の従来の含浸型カソード構体6は、内方筒状部3と含浸型カソ ードペレット1とを内方筒状部3の先端部で溶接されているために、内方筒状部 3と含浸型カソードペレット1の密着面積が少なく、ヒーター5の熱が含浸型カ ソードペレット1に伝わりにくいという問題点があった。 By the way, in the above-mentioned conventional impregnated cathode structure 6, since the inner tubular portion 3 and the impregnated cathode pellet 1 are welded at the tip of the inner tubular portion 3, the inner tubular portion 3 There was a problem that the contact area of the impregnated cathode pellet 1 was small and the heat of the heater 5 was difficult to be transferred to the impregnated cathode pellet 1.

【0004】 そこで、この考案は、含浸型カソードペレットと内方筒状部の形状を両者の密 着面積が増えるような形状とし、かつ両者を圧着させた状態で溶接することによ って熱伝導を向上させることを目的とする。Therefore, in the present invention, the impregnated cathode pellet and the inner cylindrical portion are shaped so as to increase the adhesion area between the two, and the two are heat-bonded by pressure welding. The purpose is to improve conduction.

【0005】[0005]

【課題を解決するための手段】[Means for Solving the Problems]

この考案は、上記の課題を解決するために、金属製筒状部内に含浸型カソード ペレットを挿着してなる含浸型カソード構体において、先端部を縮径して開口し た段差部をもうけた内方筒状部の中へ、先端部を縮径して突出させ段差部をもう けた含浸型カソードペレットを、段差部同志が広い面積で密着するようにして挿 着し、両者の密着部を溶接したことを特徴とするものである。 In order to solve the above problems, the present invention provides an impregnated cathode structure in which impregnated cathode pellets are inserted into a metal tubular portion, and a stepped portion is formed by reducing the diameter of the tip portion. Insert the impregnated cathode pellet with a stepped portion and a stepped portion into the inner cylindrical portion so that the stepped portions are in close contact with each other over a wide area. It is characterized by being welded.

【0006】[0006]

【作用】[Action]

上記の構成によると、含浸型カソードペレットと内方筒状部の接触面積が大き くなり、ヒーターより発せられた熱を効率よく含浸型カソードペレットに伝達さ せることが出来る。このためヒーターの投入電力を低減できて、ヒーターの寿命 を延長でき、信頼性の高い含浸型カソード構体を提供できる。 According to the above configuration, the contact area between the impregnated cathode pellet and the inner cylindrical portion becomes large, and the heat generated by the heater can be efficiently transferred to the impregnated cathode pellet. As a result, the electric power supplied to the heater can be reduced, the life of the heater can be extended, and a highly reliable impregnated cathode structure can be provided.

【0007】[0007]

【実施例】【Example】

以下、この考案の実施例について、図面を参照して説明する。 An embodiment of the present invention will be described below with reference to the drawings.

【0008】 図1は、この考案の一実施例の含浸型カソードの断面図である。なお、従来例 と同一部分は同一符号をつけて説明を省略する。図において、2はMo等耐熱性金 属からなる底板、4はMo等の外方筒状部、5はヒーター、7は含浸型カソードペ レットで、7aは縮径した段差部、8はMo等の内方筒状部で、8aは縮径した段 差部、9は本考案の含浸型カソード構体である。FIG. 1 is a sectional view of an impregnated cathode according to an embodiment of the present invention. The same parts as those of the conventional example are designated by the same reference numerals and the description thereof will be omitted. In the figure, 2 is a bottom plate made of a heat-resistant metal such as Mo, 4 is an outer cylindrical portion such as Mo, 5 is a heater, 7 is an impregnated cathode pellet, 7a is a stepped portion with a reduced diameter, 8 is Mo, etc. 8a is a stepped portion having a reduced diameter, and 9 is an impregnated cathode assembly of the present invention.

【0009】 上記の構成において、先端部を縮径して開口した段差部8aをもうけた内方筒 状部8中へ、先端部を縮径して突出させ段差部7aをもうけた含浸型カソードペ レット7を、段差部7aと8aが密着するようにして挿着し、さらに密着部を溶 接している。また含浸型カソードペレット7の先端の電子放出部は、内方筒状部 の縮径した開口部から露出している。ここで、内方筒状部8の段差部8aの内径 寸法を含浸型カソードペレット7の段差部7aの外径より若干小さく設定してお いて、後者の段差部7aを前者の段差部8aへ挿入すれば、両段差部7a,8a は圧着された状態になる。含浸型カソードペレット7と内方筒状部8が縮径した 段差部7a,8aで密着するから、密着部の表面積が増大することになり、ヒー ター5から発生した熱が効率よく含浸型カソードペレット7に伝達されるという 利点がある。この結果、含浸型カソードペレット7の動作温度を所定の温度(例 えば1050°C)に維持するためのヒーター投入電力を低減することができて 、ヒーターの動作温度を低減できるので、ヒーター寿命が延長し、信頼性の高い 含浸型カソードを実現できる。In the above-described structure, the impregnated cathode pen having the stepped portion 7a is formed by projecting the tip portion into the inner cylindrical portion 8 having the stepped portion 8a whose diameter is reduced and opened. The let 7 is inserted and attached so that the step portions 7a and 8a are in close contact with each other, and the close contact portions are welded together. The electron-emitting portion at the tip of the impregnated cathode pellet 7 is exposed from the reduced diameter opening of the inner cylindrical portion. Here, the inner diameter of the stepped portion 8a of the inner tubular portion 8 is set to be slightly smaller than the outer diameter of the stepped portion 7a of the impregnated cathode pellet 7, and the latter stepped portion 7a is moved to the former stepped portion 8a. When inserted, both step portions 7a and 8a are in a crimped state. Since the impregnated cathode pellet 7 and the inner cylindrical portion 8 adhere to each other at the reduced diameter step portions 7a and 8a, the surface area of the adhered portion increases, and the heat generated from the heater 5 is efficiently generated. There is an advantage that it is transmitted to the pellet 7. As a result, the electric power supplied to the heater for maintaining the operating temperature of the impregnated cathode pellet 7 at a predetermined temperature (eg, 1050 ° C) can be reduced, and the operating temperature of the heater can be reduced, so that the heater life is extended. It is possible to extend and realize a highly reliable impregnated cathode.

【0010】 なお、本考案の段差部は縮径部と延長部を含んでいる。また、図1では直角に 縮径している場合について示したが、直角に限定されるものではなく、テーパ状 に縮径してもよい。The step portion of the present invention includes a reduced diameter portion and an extension portion. Although FIG. 1 shows the case where the diameter is reduced at a right angle, the diameter is not limited to the right angle, and the diameter may be tapered.

【0011】[0011]

【考案の効果】[Effect of the device]

以上説明したように、この考案は、含浸型カソードペレットと内方筒状部の形 状を縮径した段差部をもうけるようにし、かつ含浸型カソードペレットが内方筒 状部に挿着され、さらに密着部を溶接固着した構成としたことにより、ヒーター からの熱伝導を向上することができる。 As described above, the present invention provides a stepped portion in which the shape of the impregnated cathode pellet and the inner cylindrical portion is reduced, and the impregnated cathode pellet is inserted and attached to the inner cylindrical portion. In addition, the heat transfer from the heater can be improved by making the contact portion welded and fixed.

【0012】 この結果、ヒーターの動作温度を低下することができて、ヒーターの寿命を延 長でき、信頼性の高い含浸型カソードを提供できる効果がある。As a result, the operating temperature of the heater can be lowered, the life of the heater can be extended, and an impregnated cathode with high reliability can be provided.

【図面の簡単な説明】[Brief description of drawings]

【図1】 この考案の一実施例の含浸型カソード構体の
断面図
FIG. 1 is a sectional view of an impregnated-type cathode assembly according to an embodiment of the present invention.

【図2】 従来の含浸型カソード構体の断面図FIG. 2 is a sectional view of a conventional impregnated cathode assembly.

【符号の説明】[Explanation of symbols]

7 含浸型カソードペレット 7a 含浸型カソードペレットの段差部 8 内方筒状部 8a 内方筒状部の段差部 9 含浸型カソード構体 7 Impregnated cathode pellet 7a Stepped portion of impregnated cathode pellet 8 Inner cylindrical portion 8a Stepped portion of inner cylindrical portion 9 Impregnated cathode structure

Claims (1)

【実用新案登録請求の範囲】 【請求項1】金属製内方筒状部に含浸型カソードペレッ
トを挿着してなる含浸型カソード構体において、 先端部を縮径して開口した段差部をもうけた内方筒状部
中へ、先端部を縮径して突出させ段差部をもうけた含浸
型カソードペレットを、段差部同志が密着するようにし
て挿着し溶接したことを特徴とする含浸型カソード構
体。
[Claims for utility model registration] [Claim 1] In an impregnated cathode structure in which impregnated cathode pellets are inserted into a metal inner cylindrical portion, a stepped portion is formed by reducing the diameter of the tip portion. Impregnated type cathode pellets, in which the tip is reduced in diameter and protruded to form a stepped portion, are inserted into the inner cylindrical portion and welded so that the stepped portions are in close contact with each other. Cathode structure.
JP5979691U 1991-07-30 1991-07-30 Impregnated cathode structure Pending JPH0511290U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5979691U JPH0511290U (en) 1991-07-30 1991-07-30 Impregnated cathode structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5979691U JPH0511290U (en) 1991-07-30 1991-07-30 Impregnated cathode structure

Publications (1)

Publication Number Publication Date
JPH0511290U true JPH0511290U (en) 1993-02-12

Family

ID=13123600

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5979691U Pending JPH0511290U (en) 1991-07-30 1991-07-30 Impregnated cathode structure

Country Status (1)

Country Link
JP (1) JPH0511290U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20000067670A (en) * 1999-04-30 2000-11-25 김순택 Electron gun with electron emission mean used in cathod ray tube

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5417549A (en) * 1977-06-23 1979-02-08 Nordson Corp Heating apparatus for fluid flowing through pipe
JPS5842142A (en) * 1981-09-08 1983-03-11 Nec Corp Pierce type electron gun
JPS62217525A (en) * 1986-03-19 1987-09-25 Hitachi Ltd Impregnated cathode
JPS6477821A (en) * 1987-09-18 1989-03-23 Hitachi Ltd Impregnated cathode

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5417549A (en) * 1977-06-23 1979-02-08 Nordson Corp Heating apparatus for fluid flowing through pipe
JPS5842142A (en) * 1981-09-08 1983-03-11 Nec Corp Pierce type electron gun
JPS62217525A (en) * 1986-03-19 1987-09-25 Hitachi Ltd Impregnated cathode
JPS6477821A (en) * 1987-09-18 1989-03-23 Hitachi Ltd Impregnated cathode

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20000067670A (en) * 1999-04-30 2000-11-25 김순택 Electron gun with electron emission mean used in cathod ray tube

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