KR910005835Y1 - Cathode structure of melting types for electron gun - Google Patents

Cathode structure of melting types for electron gun Download PDF

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Publication number
KR910005835Y1
KR910005835Y1 KR2019890010285U KR890010285U KR910005835Y1 KR 910005835 Y1 KR910005835 Y1 KR 910005835Y1 KR 2019890010285 U KR2019890010285 U KR 2019890010285U KR 890010285 U KR890010285 U KR 890010285U KR 910005835 Y1 KR910005835 Y1 KR 910005835Y1
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South Korea
Prior art keywords
cathode structure
electron gun
heater
negative electrode
electrode material
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KR2019890010285U
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Korean (ko)
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KR910003398U (en
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노환철
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삼성전관 주식회사
김정배
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Publication of KR910003398U publication Critical patent/KR910003398U/en
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Publication of KR910005835Y1 publication Critical patent/KR910005835Y1/en

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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J1/00Details of electrodes, of magnetic control means, of screens, or of the mounting or spacing thereof, common to two or more basic types of discharge tubes or lamps
    • H01J1/02Main electrodes
    • H01J1/13Solid thermionic cathodes
    • H01J1/20Cathodes heated indirectly by an electric current; Cathodes heated by electron or ion bombardment
    • H01J1/26Supports for the emissive material
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J1/00Details of electrodes, of magnetic control means, of screens, or of the mounting or spacing thereof, common to two or more basic types of discharge tubes or lamps
    • H01J1/02Main electrodes
    • H01J1/13Solid thermionic cathodes
    • H01J1/20Cathodes heated indirectly by an electric current; Cathodes heated by electron or ion bombardment
    • H01J1/28Dispenser-type cathodes, e.g. L-cathode
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J29/00Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
    • H01J29/02Electrodes; Screens; Mounting, supporting, spacing or insulating thereof
    • H01J29/04Cathodes

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  • Solid Thermionic Cathode (AREA)
  • Electrodes For Cathode-Ray Tubes (AREA)

Abstract

내용 없음.No content.

Description

전자총용 함침형 음극구조체Impregnation type cathode structure for electron gun

제 1 도는 일반적인 함침형 음극구조체의 단면도.1 is a cross-sectional view of a general impregnated cathode structure.

제 2 도는 본 고안의 한 바람직한 실시예의 분해 사시도.2 is an exploded perspective view of one preferred embodiment of the present invention.

제 3 도는 제 2 도에 도시된 본 고안의 결합상태 단면도.3 is a cross-sectional view of the coupling state of the present invention shown in FIG.

* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

1a, 1b : 펠렛 2a, 2b : 음극물질1a, 1b: pellets 2a, 2b: negative electrode material

2b' : 돌출부 3a, 3b : 저장조(container)2b ': protrusions 3a, 3b: container

3b' : 바닥면 4a, 4b : 슬리이브3b ': bottom surface 4a, 4b: sleeve

HRa, HRb : 히이터HRa, HRb: Heater

본 고안은 음극선관을 전자총의 함침형 음극구조체에 관한 것으로서, 열효율의 극대화 저전력의 속동화가 가능하토록 개량된 것에 관한 것이다.The present invention relates to a cathode ray tube impregnated cathode structure of an electron gun, and to an improved one to maximize the thermal efficiency and to enable low-power dynamics.

일반적인 함침형 음극구조체는 제 1 도에 도시된 바와 같이 일반적인 방열형 산화물 음극구조체와 동일한 열전달 형식의 구조를 이루고 있는 바, 히이터(HRa)가 내장되는 슬라이브(4a) 상단부에 저장조(3a)가 결합되어 이에 음극물질(2a)이 장입된다. 또한 상기 음극물질(2a)의 상부에는 텅스텐(W)을 주재료로 하는 다공성 펠렛(1a)이 고정된다. 즉 상기의 음극물질(2a)은 주로 히이터(HRa)로부터 슬리이브(4a)를 통하여 전도된 열에 의해 간접가열 되며, 히이터(HRa) 상부를 통한 복사열에 의해서도 일부 가열되는 것이다.As shown in FIG. 1, the general impregnated cathode structure has the same heat transfer type structure as the general heat dissipation oxide cathode structure, and the storage tank 3a is coupled to the upper end of the slave 4a in which the heater HRa is built. Thus, the negative electrode material 2a is charged. In addition, a porous pellet 1a mainly composed of tungsten (W) is fixed to the upper portion of the negative electrode material 2a. That is, the negative electrode material 2a is indirectly heated by heat conducted mainly from the heater HRa through the sleeve 4a, and partially heated by radiant heat through the upper part of the heater HRa.

이러한 종래의 음극구조체는 상기한 바와 같이 간접 가열방식이기 때문에 열효율이 높지 못하고 결과적으로 열전자방출 시작시간이 지연되는 결점을 가진다.Since the conventional cathode structure is indirect heating as described above, the thermal efficiency is not high, and consequently, the start time of hot electron emission is delayed.

이를 해결하기 위하여는 히이터에의 전류를 높여 발열량을 증가시켜야 하는데, 전자총의 소비전력이 증가됨은 물론이고, 음극구조체로부터의 과다한 방열량 때문에 전자총 부품변형이 크게 초래되는 문제가 있기 때문에 히이터 전류를 증가시키는 데에는 한계가 있는 것이다.In order to solve this problem, it is necessary to increase the amount of heat generated by increasing the current to the heater, which increases the current of the heater because there is a problem that the electron gun component deformation is caused largely due to the excessive heat dissipation from the cathode structure. There is a limit.

본 고안은 낮은 전류하에서도 고전류 밀도화가 가능함은 물론, 속동화(Quick start)가 가능하도록 개량된 전자총용 함침형 음극구조체를 제공함에 그 목적이 있다.The object of the present invention is to provide an impregnated cathode structure for an electron gun that is capable of high current density even under low current, and also enables quick start.

상기의 목적을 달성하기 위하여 본 고안은, 히이터가 내장되는 슬리이브, 슬리이브 상단부에 결합되는 저장조와, 상기 저장조에 장입 고정되는 음극 물질과, 상기 음극물질의 상부에 위치되는 펠렛을 구비하여 된것에 있어서, 상기 음극물질이 장입되는 저장조에 원뿔상의 바닥면을 형성하고, 상기 히이터는 상기 저장조의 원뿔형 바닥면을 둘러쌀 수 있도록 원추형으로 형성하도록 하는 점에 그 특징이 있다.In order to achieve the above object, the present invention comprises a sleeve in which a heater is built, a storage tank coupled to an upper end of a sleeve, a negative electrode material charged and fixed to the storage tank, and a pellet located on an upper portion of the negative electrode material. In the storage tank in which the negative electrode material is charged, the conical bottom surface is formed, and the heater is characterized in that the conical shape so as to surround the conical bottom surface of the reservoir.

이하 도면에 예시된 본 고안의 한 바람직한 실시예를 상세히 설명한다.Hereinafter, one preferred embodiment of the present invention illustrated in the drawings will be described in detail.

제 2 도, 제 3 도에 도시된 바와 같이 슬리이브(4b) 상단부에 원뿔형 바닥면(3b')을 가진 저장조(3b)가 결합되며 이에는 음극물질(2b)이 장입된다. 그리고 슬리이브(4b)의 하방으로부터는 원추형 스프링형태로 가공형성된 히이터(HRb)가 삽입된다. 그리고 상기 음극물질(2b)의 상부에는 텅스텐(W)을 주재료로 하는 다공성 펠렛(1b)이 결합된다.As shown in Figs. 2 and 3, a reservoir 3b having a conical bottom surface 3b 'is coupled to an upper end of the sleeve 4b, and a negative electrode material 2b is loaded therein. And from below the sleeve 4b, the heater HRb processed and formed in the form of a conical spring is inserted. In addition, a porous pellet 1b mainly composed of tungsten (W) is bonded to the upper portion of the negative electrode material 2b.

이와 같은 구성의 본 고안은, 음극물질을 저장조(3b)의 원뿔형 바닥면(3b')을 통하여 다량 흡수되는 복사열에 직접 가열되도록 되어 있는 바, 슬리이브(4b)를 통하여 흡수되는 전도열에 크게 의존치 않는 것이다.The present invention of such a configuration is that the cathode material is directly heated to radiant heat absorbed in large quantities through the conical bottom surface 3b 'of the reservoir 3b, and is highly dependent on the conductive heat absorbed through the sleeve 4b. Will not hit.

결론적으로 열효율이 크게 향상되게 되는데, 종래의 음극 구조체와 비교하여 동일 히이터 전류하에서 높은 전류 밀도를 이룰 수 있게 된다. 그리고 기존의 음극구조체와 동일 전류밀도를 얻는 것이라면 기존의 히이터 용량보다 작게 설계할 수 있게 되므로, 소비전력이 크게 감소된다.As a result, the thermal efficiency is greatly improved. Compared with the conventional cathode structure, high current density can be achieved under the same heater current. In addition, if the same current density as that of the existing cathode structure is obtained, the heater capacity can be designed smaller than that of the existing heater structure, thereby greatly reducing power consumption.

더욱이 히이터로부터의 열이 저장조로 신속히 전달되므로 전자방출시간이 크게 단축된다.Moreover, the heat from the heater is quickly transferred to the reservoir, which greatly reduces the electron emission time.

이상에서와 같이 본 고안은 저소비전력 하에서 속동화가 가능토록 구성되어 있는바, 이로써 전자총 및 음극선관의 품질을 향상시킴은 물론 히이터의 열용량 저하로 제품의 내구성을 향상시킬 수 있는 특징이 있는 것이다.As described above, the present invention is configured to be able to be accelerated under low power consumption, thereby improving the quality of the electron gun and the cathode ray tube, and also improving the durability of the product by lowering the heat capacity of the heater.

Claims (1)

히이터가 내장되는 슬리이브와, 슬리이브 상단부에 결합되는 저장조와, 상기 저장조에 장입되는 음극물질과, 상기 음극물질의 상부에 위치되는 펠렛을 구비하여 된 것에 있어서, 상기 음극물질(2b)이 장입되는 저장조(2b)에 원뿔형 바닥면(3b')가 상기 저장조(3b')을 둘러쌀 수 있도록 원추형으로 형성하여서 된 것을 특징으로 하는 전자총용 함침용 음극구조체.A sleeve having a heater incorporated therein, a reservoir coupled to an upper end of the sleeve, a negative electrode material charged in the reservoir, and a pellet positioned on the upper portion of the negative electrode material, wherein the negative electrode material 2b is charged. The cathode structure for electron gun impregnation, characterized in that the conical bottom surface (3b ') is formed in a conical shape so as to surround the reservoir (3b') in the reservoir (2b).
KR2019890010285U 1989-07-13 1989-07-13 Cathode structure of melting types for electron gun KR910005835Y1 (en)

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KR910005835Y1 true KR910005835Y1 (en) 1991-08-05

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KR20000067670A (en) * 1999-04-30 2000-11-25 김순택 Electron gun with electron emission mean used in cathod ray tube

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