KR0177114B1 - Anti-explosion band and cathode ray tube of supporting method - Google Patents

Anti-explosion band and cathode ray tube of supporting method Download PDF

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Publication number
KR0177114B1
KR0177114B1 KR1019930019804A KR930019804A KR0177114B1 KR 0177114 B1 KR0177114 B1 KR 0177114B1 KR 1019930019804 A KR1019930019804 A KR 1019930019804A KR 930019804 A KR930019804 A KR 930019804A KR 0177114 B1 KR0177114 B1 KR 0177114B1
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South Korea
Prior art keywords
ray tube
cathode ray
explosion
proof band
lug
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KR1019930019804A
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Korean (ko)
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KR950009877A (en
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권상봉
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엄길용
오리온전기주식회사
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    • 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
    • H01J29/86Vessels; Containers; Vacuum locks
    • H01J29/87Arrangements for preventing or limiting effects of implosion of vessels or containers

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  • Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)

Abstract

본 발명은 음극선관의 신규한 지지방법과 이를 구현하는 방폭밴드를 개시한다.The present invention discloses a novel support method for a cathode ray tube and an explosion-proof band implementing the same.

음극선관은 방폭밴드에 부착된 러그에 의해 세트에 지지되는데 종래에는 러그가 네 모서리에 부착되므로 뒤틀림이 크고 정도관리가 곤란하여 정확한 지지가 어려웠으며, 특히 열수축 밴드의 경우에는 용접부위가 많아 공수가 강도상의 문제가 있었다.Cathode ray tube is supported on the set by the lug attached to the explosion-proof band. Conventionally, since the lug is attached to the four corners, the distortion is large and the quality control is difficult, so that the accurate support was difficult. There was a problem with strength.

본 발명에서는 러그를 방폭밴드의 장단변부에 배치함으로써 정확한 세트지지가 가능하게 하며 용접부위의 수도 현저히 절감시켰다.In the present invention, by placing the lug on the long and short side of the explosion-proof band to enable accurate set support and significantly reduced the number of welds.

Description

음극선관 지지방법 및 방폭밴드Cathode ray tube support method and explosion proof band

제1도는 배기시의 응력분포를 보이는 음극선관의 측면도.1 is a side view of a cathode ray tube showing the stress distribution during exhaustion.

제2도는 종래의 지지방법에 의한 방폭밴드를 보이는 음극선관의 평면도.2 is a plan view of a cathode ray tube showing an explosion-proof band according to a conventional supporting method.

제3도는 본 발명 지지방법에 의한 음극선관의 평면도.3 is a plan view of a cathode ray tube according to the supporting method of the present invention.

제4도는 제3도의 Ⅳ방향에서 취한 러그의 부분확대 사시도이다.4 is a partially enlarged perspective view of the lug taken in the IV direction of FIG.

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

T : 음극선관(Cathode Ray Tube)T: Cathode Ray Tube

B : 방폭밴드(防爆 band)B: explosion-proof band

1 : 러그(lug)1 lug

E1, E2 : (방폭밴드의) 단부(end portion)E1, E2: end portions (of explosion-proof bands)

본 발명은 음극선관에 관한 것으로, 더 상세히는 그 지지방법과 이를 구현하는 방폭밴드에 관한 것이다.The present invention relates to a cathode ray tube, and more particularly to a support method and an explosion-proof band for implementing the same.

음극선관은 전자총에서 전자를 발생시켜 이를 집속(集束) 및 가속(加速)시켜 형성한 전자빔으로 형광면을 선택적발광시킴으로써 화상을 표시하는 장치이다. 전자빔의 안정적 발생과 가속을 위해서는 전자빔의 경로상에 기체분자등이 존재하면 안되므로 음극선관내의 관내는 고진공상태로 배기되지 않으면 안된다. 음극선관을 배기시켜 밀봉하면 제1도에 도시된 바와같이 음극선관(T)의 패널(panel; P)과 펀넬(funnel; F)은 내측으로 수축하고자 하고 패널(P)의 스커어트(skirt; S)는 외측으로 팽창하고자 하는 큰 응력상태가 발생된다. 이러한 응력은 통상적인 상태에서는 음극선관(T)의 자체강도에 의해 지지될 수 있으나, 음극선관(T)은 취성(脆性)재질인 유리로 제작되므로 외부충격등에 의해 급격히 폭축(implosion)될 위험성이 상존한다.A cathode ray tube is an apparatus that displays an image by selectively emitting a fluorescent surface with an electron beam formed by generating electrons from an electron gun and focusing and accelerating them. In order to stably generate and accelerate the electron beam, gas molecules must not exist on the path of the electron beam, and thus the inside of the cathode ray tube must be exhausted in a high vacuum state. When the cathode ray tube is evacuated and sealed, as shown in FIG. 1, the panel P and the funnel F of the cathode ray tube T try to contract inward and the skirt P of the panel P is inclined. S) is a large stress state to be expanded to the outside occurs. Such stress can be supported by the strength of the cathode ray tube T in a normal state, but since the cathode ray tube T is made of glass of brittle material, there is a danger of sudden collapse due to external impact. It exists.

이에따라 패널(P)의 스커어트(S)외주에 방폭밴드(防爆 band)를 큰 인장력으로 감아주어 팽창응력을 감소시키는 보강방법이 사용되고 있다. 이러한 방폭밴드의 밴딩(banding)방식에는 크게보아 열수축밴딩(shrinkage banding)과 인장밴딩(tension banding)방식이 있는데, 특히 열수축 밴딩방식이 생산자동화에 적절한 공정특성을 구비하여 관심이 집중되고 있다.Accordingly, a reinforcement method is used to reduce the expansion stress by winding the explosion-proof band with a large tensile force on the outer periphery of the panel P of the panel P. The banding method of the explosion-proof band is largely divided into a shrinkage banding and a tension banding method, and in particular, the heat shrinking banding method has a focus on attention because it has appropriate process characteristics for production automation.

그런데 열수축 밴딩방식은 음극선관의 유리재질보다 열팽창율이 큰 금속제 밴드를 고온으로 가열한뒤 패널에 씌워 냉각시킴으로써 열팽창율의 차이에 의해 인장력을 부여하는 방법이다. 그런데 고온의 금속제밴드를 유리제 패널에 직접 씌우면 패널에 열충격등으로 크랙(crack)이 발생되기 쉬우며 냉각에 따른 인장력의 증가에 의해 패널로부터 이탈되기 쉽다. 이에따라 절연과 밴드 이탈방지의 목적으로 패널의 스커어트 외주에 접착테이프를 부착한뒤 그위에 밴드를 감는 밴딩방법이 일반적으로 사용되고 있다.However, the heat shrink banding method is a method of applying a tensile force by a difference in thermal expansion rate by heating a metal band having a higher thermal expansion rate than a glass material of a cathode ray tube at a high temperature and then covering the panel with cooling. However, when the high-temperature metal band is directly covered on the glass panel, cracks are likely to occur due to thermal shocks on the panel and are easily detached from the panel by an increase in tensile force due to cooling. Accordingly, for the purpose of insulation and band separation prevention, a banding method of attaching an adhesive tape to the outer periphery of the panel and winding the band thereon is generally used.

이에따라 열수축방식의 방폭밴드는 내주(內周)측에 돌출부가 없어야 하므로 제2도에 도시된 바와같이 그 단부(端部)에 겹판(K)을 덧대어 방폭밴드(B)를 용접하고 있다. 뿐만아니라 음극선관(T)을 TV세트등에 결합지지하는 러그(lug; L)도 용접없이 장착이 가능한 인장밴딩방식과는 달리 용접에 의해 방폭밴드(B)에 부착될 수 밖에 없게된다. 이에따라 열수축방식의 밴딩시에는 인장밴딩에 비해 용접부위가 현저히 증가되어 제작공수가 많이 들뿐아니라, 용접부는 잔류 열응력에 의한 구조적 취약부이며 산화등 부식이 용이한 부분이므로 충분한 인장력의 도입등 음극선관의 적절한 보강에 많은 문제가 있었다. 한편 어떠한 밴딩방식을 취하건 종래의 방폭밴드(B)에 있어서는 모두 러그(L)가 네 모서리부에 부착되었는데, 러그(L)가 곡면을 가지도록 형성되어야 할 뿐 아니라 모서리부는 뒤틀림등이 크므로 음극선관(T)의 정확한 지지가 곤란할 뿐 아니라 그 지지결합부의 구성도 번거로와 세트와의 정확한 결합이 불가능한 문제가 있었다.Accordingly, the explosion-proof band of the heat-shrink type has no protrusions on the inner circumferential side, so that the explosion-proof band B is welded by attaching the leaf plate K to its end as shown in FIG. In addition, the lug (L) for supporting the cathode ray tube (T) to the TV set or the like is also attached to the explosion-proof band (B) by welding, unlike the tensile banding method that can be mounted without welding. Accordingly, in the case of heat shrink banding, the welding area is significantly increased compared to the tension banding, which requires a lot of manufacturing labor. In addition, the welding part is structurally weak due to residual thermal stress and is easily corroded by oxidation. There were many problems with proper reinforcement. On the other hand, no matter what bending method is used, in the conventional explosion-proof band (B), both lugs (L) are attached to the four corners, but not only the lug (L) has to be formed to have a curved surface, but also the corners have a large distortion, etc. Accurate support of the cathode ray tube (T) is difficult, as well as the configuration of the support coupling part has a problem that can not be precisely combined with the set.

본 발명은 이러한 종래의 문제점을 감안하여 음극선관의 정확한 지지가 가능하며 특히 열수축 밴딩시 용접부위를 현저히 감소시킬 수 있는 지지방법을 제공하는 것을 목적으로 한다.It is an object of the present invention to provide a support method capable of accurately supporting a cathode ray tube in particular in view of such a conventional problem, and in particular, significantly reducing a welding part during heat shrink banding.

본 발명의 다른 목적은 이와같은 본 발명 방법의 구현에 적합한 방폭밴드를 제공하는 것이다.Another object of the present invention is to provide an explosion-proof band suitable for implementing such a method of the present invention.

상술한 목적을 달성하는 본 발명의 음극선관 지지방법은 음극선관이 네 모서리가 아니라 장변부 또는 단변부의 중간에서 지지되는 것을 특징으로 한다.Cathode ray tube support method of the present invention to achieve the above object is characterized in that the cathode ray tube is supported in the middle of the long side or short side rather than the four corners.

이러한 방법의 구현에 적합한 본 발명 방폭밴드는 방폭밴드의 장변부 또는 단변부중 적어도 어느 한변의 양측에 하나 또는 복수의 러그가 부착되는 것을 특징으로 한다.Explosion-proof band of the present invention suitable for the implementation of this method is characterized in that one or a plurality of lugs are attached to both sides of at least one side of the long side or short side of the explosion-proof band.

본 발명의 바람직한 특징에 의하면 방폭밴드의 양단부는 이 러그위치에서 만나게되어 러그가 덧판구실을 함으로써 러그의 용접으로 방폭밴드의 용접이 동시에 이루어지게 된다.According to a preferred feature of the present invention, both ends of the explosion-proof band meet at this lug position, so that the welding of the explosion-proof band is performed at the same time by welding the lug as the lug serves as a plate plate.

이하 첨부된 도면을 참조하여 본 발명의 바람직한 실시예를 상세히 설명한다.Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

제3도에서, 음극선관(T)의 세트지지를 위해 방폭밴드(B)에 부착되는 러그(1)는, 종래와 같이 방폭밴드(B)의 네 모서리에 부착되는 것이 아니라 장변부 또는 단변부의 중간에 부착된다. 이러한 러그(1)는 평면상에 부착되므로 단순한 L자형의 단면을 가지게되어 그 제작도 매우 간편하게 된다. 도면에서 러그(1)는 각각 두 지지구멍(2)을 가져 단변부의 양측 중앙에 하나씩 부착되어 있으나, 필요에 따라서는 점선과 같이 장변부에 부착될 수도 있으며 장변부와 단변부에 동시에 부착될수도 있다. 또한 그 부착위치도 반드시 장, 단변부의 중앙일 필요는 없으나 음극선관(T)과 세트의 정합을 위해서는 러그(1)의 중심축선이 장, 단변의 중심축선과 일치하는 것이 바람직하다.In FIG. 3, the lug 1 attached to the explosion-proof band B for supporting the set of the cathode ray tube T is not attached to the four corners of the explosion-proof band B as in the prior art, but rather the long side portion or the short side portion. Attached in the middle. Since the lug 1 is attached on a flat surface, the lug 1 has a simple L-shaped cross section, which makes the production very easy. In the figure, each lug 1 has two supporting holes 2 and is attached to one of the centers of both sides of the short side, but if necessary, the lugs 1 may be attached to the long side as shown by the dotted line, or may be attached to the long side and the short side at the same time. . In addition, the attachment position does not necessarily need to be the center of the long and short sides, but for the matching of the cathode ray tube T and the set, it is preferable that the center axis of the lug 1 coincides with the center axis of the long and short sides.

바람직하기로 방폭밴드(B)의 양단부(E1,E2)는 제4도에 도시된 바와같이 러그(1)위치에서 만나게 된다. 이에따라 러그(1)가 겹판역할을 하게되어 러그(1)를 방폭밴드(B)에 용접하면 방폭밴드(B)의 용접도 동시에 이루어지게 된다. 이에따라 열수축 밴딩에 있어서 종래 5개소(제2도 참조)이던 방폭밴드(B)의 용접부위가 단 2개소(제3도 참조)로 현저히 감소하게 되어 용접공수를 절감하고 잔류열응력에 의한 방폭밴드(B)의 강도 저하를 방지할 수 있게된다.Preferably both ends E1 and E2 of the explosion-proof band B are met at the lug 1 position as shown in FIG. Accordingly, when the lug 1 serves as an overlap plate and the lugs 1 are welded to the explosion-proof band B, welding of the explosion-proof band B is also performed. Accordingly, in the heat shrink banding, the welding area of the explosion-proof band B, which was conventionally 5 places (see FIG. 2), is significantly reduced to only 2 places (see FIG. 3), thereby reducing the welding maneuver and the explosion-proof band due to residual thermal stress. The fall of the strength of (B) can be prevented.

이상과 같이 본 발명에 의하면 정도(精度)관리가 용이한 장단변부상에서 음극선관을 지지하게 되므로 음극선관의 조립정도를 향상시킬 수 있게된다. 또한 열수축밴딩에 있어서는 용접부위의 현저한 감소로 공수의 절감과 강도의 큰 증가를 기대할 수 있다.As described above, according to the present invention, since the cathode ray tube is supported on the long and short side portion, which is easy to manage accuracy, the assembly degree of the cathode ray tube can be improved. In addition, in heat shrink banding, it is possible to expect a significant reduction in welded area and a great increase in strength and strength.

이에따라 본 발명은 음극선관의 안전성과 생산성 향상과 이를 이용한 화상기기세트의 조립정도의 향상에 큰 효과가 있다.Accordingly, the present invention has a great effect on improving the safety and productivity of the cathode ray tube and the assembly degree of the image device set using the same.

Claims (3)

음극선관이 이를 구비하는 화상기기세트에 대해 장변부 및 단변부의 중앙에서 지지되는 것을 특징으로 하는 음극선관의 지지방법A method for supporting a cathode ray tube, characterized in that the cathode ray tube is supported at the center of the long side and the short side with respect to the image device set including the same. 음극선관을 보강하며 상기 음극선관을 화상기기세트에 지지시키려는 러그가 구비된 음극선관의 방폭밴드에 있어서, 상기 러그(1)가 상기 방폭밴드(B)의 장변부 및 단변부의 중앙에 부착되는 것을 특징으로 하는 음극선관의 방폭밴드In the explosion-proof band of the cathode ray tube provided with a lug to reinforce the cathode ray tube and to support the cathode ray tube in the image device set, the lug 1 is attached to the center of the long side and the short side of the explosion-proof band B. Explosion proof band of cathode ray tube 제2항에 있어서, 상기 방폭밴드(B)의 양단부(E1,E2)가 상기 한 러그(1)위치에서 만나, 러그(1)의 용접시 상기 러그(1)를 겹판으로 하여 상기 방폭밴드(B)의 양단부(E1,E2)의 접합이 동시에 이루어지는 것을 특징으로 하는 음극선관의 방폭밴드3. The explosion-proof band according to claim 2, wherein both ends (E1, E2) of the explosion-proof band (B) meet at the position of the one lug (1), and when the lug (1) is welded, the lug (1) is laminated. Explosion-proof band of cathode ray tube, characterized in that joining of both ends (E1, E2) of B) is performed simultaneously
KR1019930019804A 1993-09-27 1993-09-27 Anti-explosion band and cathode ray tube of supporting method KR0177114B1 (en)

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