KR900000547Y1 - Heater for electron gun - Google Patents

Heater for electron gun Download PDF

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Publication number
KR900000547Y1
KR900000547Y1 KR2019860022112U KR860022112U KR900000547Y1 KR 900000547 Y1 KR900000547 Y1 KR 900000547Y1 KR 2019860022112 U KR2019860022112 U KR 2019860022112U KR 860022112 U KR860022112 U KR 860022112U KR 900000547 Y1 KR900000547 Y1 KR 900000547Y1
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KR
South Korea
Prior art keywords
heater
mandrel
electron gun
heat
sleeve
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Application number
KR2019860022112U
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Korean (ko)
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KR880013615U (en
Inventor
박공석
Original Assignee
주식회사금성사
구자학
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Priority to KR2019860022112U priority Critical patent/KR900000547Y1/en
Publication of KR880013615U publication Critical patent/KR880013615U/en
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Publication of KR900000547Y1 publication Critical patent/KR900000547Y1/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
    • H01J1/22Heaters

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  • Resistance Heating (AREA)

Abstract

내용 없음.No content.

Description

브라운관의 전자총용 히터Braun tube heater

제1도는 종래의 더블 헬리컬 감기용 맨드릴 외형도.1 is a view of a conventional double helical winding mandrel.

제2도는 제1도에서의 우측면도.2 is a right side view in FIG.

제3도는 종래의 히터 개략도.3 is a schematic view of a conventional heater.

제4도는 본 고안에 따른 맨드릴의 외형도.Figure 4 is an external view of the mandrel according to the present invention.

제5도는 제4도에서의 우측면도.5 is a right side view in FIG.

제6도는 본 고안에 따른 히터의 개략도.6 is a schematic view of a heater according to the present invention.

제7도는 히터의 오버슈트 비교 파형도.7 is a comparison waveform diagram of the overshoot of the heater.

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

1, 4 : 맨드릴 2, 5 : 발열부1, 4: mandrel 2, 5: heat generating portion

3, 6 : 입력부 a, b :히터 코일 감는 위치3, 6: input section a, b: heater coil winding position

7 : 캡 8 : 슬라이브7: cap 8: slave

9 : 지지부 10 : 히터코일9: support portion 10: heater coil

본 고안은 TV 브라운관의 전자총에 사용되는 히터에 관한 것으로서, 특히 히터의 발열부를 피라밋 형상으로 개선시켜 순간 발열시 오브슈트(Over Shoot)율을 낮추어 복사열에 의한 열전달이 되도록 한 브라운관의 전자총용 히터에 관한 것이다.The present invention relates to a heater used for an electron gun of a TV CRT, and particularly to a heater for an electron gun of a CRT, which improves the heating part of the heater to a pyramid shape to reduce the overshoot rate during instantaneous heating so that heat transfer is caused by radiant heat. It is about.

종래에는 싱글 코일 감기 기계에서 몰리브덴선 위에 텅스텐선을 정한 피치로 감아 발열부와 입력부를 연속감은 히터코일은 수소 분위기의 높은 온도에서 소성 증가를 위한 베이킹 후에 더블 헬리컬(Double Helical)감기 기계로 제1와 제2도에 도시된 일직선의 맨드릴(Mandrel)(1)을 이용하여 제3도의 히터에서 발열부(2)와 입력부(3)를 형성시켜 표면에 절연재인 알루미나로 코팅시켜 캐소우드의 캡(Cap)면에 히터가 맞닿고 히터 외경과 캐소우드 내경과의 극히 적어 순간 발열시 오버슈트율이 제7도와 같이 높게 되었으며, 더블 헬리컬 감기 기기에서 광학식 절단으로 히터 코일이 형성되어 감김부 까지 자동 이송되면 슬리이브(8)가 히터 코일(10)의 좌, 우를 지지하고 지지봉에 의해 제1도의 맨드릴(1)이 피치봉의 피치에 따라 시계방향으로 회전하면서 전진되어 맨드릴(1)의 외경에 제2도의 발열부(2)를 형성하게 되며, 선간피치는 피치봉의 TPI(Turn Per Inch)에 의해 결정되어 이때의 발열 현상은 맨드릴 형상인 일직선 상태이다.Conventionally, in a single coil winding machine, a heater coil wound around a molybdenum wire at a predetermined pitch on a molybdenum wire and continuously wound the heating part and the input part is a double helical winding machine after baking to increase plasticity at a high temperature in a hydrogen atmosphere. And the heat generating part 2 and the input part 3 are formed in the heater of FIG. 3 using a straight mandrel 1 shown in FIG. 2 and coated on the surface with alumina as an insulating material. The heater is in contact with the cap surface, and the heater outer diameter and the inner diameter of the cathode are extremely small, resulting in a high overshoot rate during instantaneous heating.The heater coil is formed by optical cutting in the double helical winding machine and automatically transferred to the winding part. When the sleeve 8 supports the left and right sides of the heater coil 10, the mandrel 1 of FIG. 1 is moved forward by rotating the clockwise direction according to the pitch of the pitch rod by the support rod. The outer diameter of the reel (1) and to form a second-degree heat generating portion 2, the line pitch is determined, which the heat generating phenomenon at this time is mandrel shaped in a straight line state by a pitch rod TPI (Turn Per Inch).

따라서 캐소우드에 히터열의 전달 경로는 3가지로 볼수 있는데 브라운관의 경우 내부가 진공 상태이므로 대류열에 의한 것은 관계가 극히 적은 것이나 대부분이 복사열에 의한 열전달이 되어야 하는데, 캐소우드의 톱(Top)부의 캡(Cap)(7)과 슬리이브(Sleev)(8)면에 히터 코일(10)이 맞닿아 있어 전도에 의한 열의 전달이 정상상태보다 많았기 때문에 오버슈트율이 높게 되었다.Therefore, the heat transfer path of heater heat to the cathode can be seen in three ways. In the case of CRT, since the inside is in a vacuum state, convective heat is very small but most of the heat should be transferred by radiant heat. The heater coil 10 abuts on the surfaces of the cap 7 and the sleeve 8, and the overshoot rate was high because heat transfer by conduction was more than normal.

그러므로 종래의 기술 구성에 있어서는 오버슈트율을 낮추기 위하여 맨드릴(1)의 전체적인 직경이 너무 가늘게 되어 있어 가공 정도가 나쁘게 되었으며, 이에 따라 생산성이 낮고, 캐소우드 캡(7)면의 열(복사)량이 감소되고 맨드릴(1)의 끝면이 감김부(a)와 동일 크기 이어서 히터코일(10)을 형성키 위해 감김 진행시와 제거시에 맨드릴(1)의 끝단이 닿아 상처를 받게되므로 맨드릴(1)의 수명이 짧게 되었다.Therefore, in the prior art configuration, the overall diameter of the mandrel 1 is too thin in order to reduce the overshoot rate, resulting in poor processing accuracy, thereby lowering the productivity and the amount of heat (copying) of the surface of the cathode cap 7. The mandrel 1 is reduced and the end face of the mandrel 1 is of the same size as the wound part a, and then the end of the mandrel 1 is touched and wounded during winding and removal to form the heater coil 10. Has shortened its lifetime.

이에 본 고안은 상기한 문제점을 개선시키기 위한 것으로 맨드릴의 구조를 개선시켜 히터의 발열부를 피라밋 형상으로 하여 히터의 열량을 캐소우드 캡(7)면에서 슬리이브(8)측으로 확산시키기 위한 것이다.Accordingly, the present invention is to improve the above-mentioned problems and to improve the structure of the mandrel to form a pyramidal shape of the heat generating portion of the heater to spread the heat of the heater from the cathode cap 7 to the sleeve 8 side.

좀더 구체적으로 설명하면 제6도에서 캐소우드의 내경과 히터의 외경 크기차는 평균 0.25mm 정도인데 캐소우드 캡(7)과 슬리이브(8)용접 상태는 용접팁에 의한 저항용접 이어서 슬리이브(8) 내면으로 돌기가 P만큼 생겨 열을 가하지 않는 상태에서는 자중에 의해 히터(10)가 삽입되나 정격 인가시에도 히터(10)는 슬리이브(8)보다 팽창이 크므로 히터(10)가 슬리이브(8)돌기부(A부)에 접촉하게 되므로 히터(10)가 상단부를 돌기에 의한 길이(P)와 히터 코일(10)로 부터 슬리브(8)에 요구되는 기준 가격(W)만큼 적게하면 전도에 의한 열전달을 감소 시킬수 있다.More specifically, in Fig. 6, the difference between the inner diameter of the cathode and the outer diameter of the heater is about 0.25 mm on the average, but the welding state of the cathode cap 7 and the sleeve 8 is resistance welding by a welding tip followed by the sleeve 8 ) Heater 10 is inserted by self-weight in the state that no protrusion is applied to the inner surface and does not apply heat. However, even when rated heater is applied, heater 10 is larger than sleeve 8, so heater 10 is sleeved. (8) Since the heater (10) is in contact with the projection (part A), if the heater (10) is less than the length (P) by the projection and the reference price (W) required for the sleeve (8) from the heater coil (10) Can reduce heat transfer.

또한 종전 제2도에서는 슬리이브의 지지부(9)가 길어서 작업의 용이성이 부족했으나 제5도에 도시된 바와같은 본 고안의 맨드릴 구조는 원추형으로 되어 있어서 지지부(9)가 짧아서 제5도와 같이 슬리이브의 양쪽 잡는 부위를 다소 중심측〔맨드릴(4)의 끝부분 지금이 작으므로〕으로 설정해서 장력을 기존의 것에 비해 10-15%정도 증가시켜 히터 코일이 나선식의 맨드릴(4)직경이 가장 큰 곳까지 감기도록 하되 피치봉의 TPI는 기존의 것보다 낮추어서 원추형으로 되면서 단위 면적당의 발열량이 많아져 턴(Turn)간의 피차가 멀어져서 절연파괴의 전압이 낮아짐을 방지하게 된다.In addition, in Fig. 2, the support 9 of the sleeve is long, so the ease of operation is insufficient, but the mandrel structure of the present invention, as shown in Fig. 5, has a conical shape, so the support 9 is short, so Set both sides of Eve to the center side (since the end of mandrel 4 is now small) and increase the tension by 10-15% compared to the existing one, so that the heater coil has a spiral mandrel 4 diameter. The winding is to the largest place, but the TPI of the pitch rod is lower than the conventional one, and becomes conical, so that the amount of heat generated per unit area increases, thereby preventing the voltage of insulation breakdown from falling due to the difference between turns.

따라서 본 고안은 히터의 발열부(5)를 피라밋 형상으로 개선시켜 히터의 순간 발열시 오버슈트율을 제7도와 같이 낮추어 복사열에 의한 열전달이 이루어져 히터의 발열부(5)가 삼각형으로 보강되어 생산성이 향상되며 히터코일의 삽입부가 보강되므로 맨드릴(4)의 수명이 길어지게 된다.Therefore, the present invention improves the heating part 5 of the heater to a pyramid shape, thereby lowering the overshoot rate during instantaneous heating of the heater as shown in FIG. 7 so that heat transfer by radiant heat is performed, and thus the heating part 5 of the heater is reinforced in a triangle to be productive. This improves and the insertion part of the heater coil is reinforced, so that the life of the mandrel 4 becomes long.

Claims (2)

전자총 발열부(5)의 히터코일을 수개의 턴부의 피치와 직경이 점차 작아지게 형성하여 이루도록 구성한 것을 특징으로 하는 브라운관의 전자총용 히터.A heater for an electron gun of a CRT tube, characterized in that the heater coil of the electron gun heating unit (5) is formed so as to form a smaller pitch and diameter of several turn parts. 제1항에 있어서, 용접 돌출부위(A)에서의 히터(10)외경이 돌출높이(P)와 기준간격(W)을 제외한 크기보다 작도록 형성되어진 것을 특징으로 하는 브라운관의 전자총용 히터.The CRT heater of claim 1, wherein an outer diameter of the heater (10) at the weld protrusion (A) is formed to be smaller than the size except for the protrusion height (P) and the reference interval (W).
KR2019860022112U 1986-12-31 1986-12-31 Heater for electron gun KR900000547Y1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR2019860022112U KR900000547Y1 (en) 1986-12-31 1986-12-31 Heater for electron gun

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR2019860022112U KR900000547Y1 (en) 1986-12-31 1986-12-31 Heater for electron gun

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KR880013615U KR880013615U (en) 1988-08-30
KR900000547Y1 true KR900000547Y1 (en) 1990-01-30

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KR2019860022112U KR900000547Y1 (en) 1986-12-31 1986-12-31 Heater for electron gun

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KR880013615U (en) 1988-08-30

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