KR940006543Y1 - Mangetic shield for c-crt - Google Patents

Mangetic shield for c-crt Download PDF

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Publication number
KR940006543Y1
KR940006543Y1 KR92003292U KR920003292U KR940006543Y1 KR 940006543 Y1 KR940006543 Y1 KR 940006543Y1 KR 92003292 U KR92003292 U KR 92003292U KR 920003292 U KR920003292 U KR 920003292U KR 940006543 Y1 KR940006543 Y1 KR 940006543Y1
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KR
South Korea
Prior art keywords
shield
magnetic field
frame
magnetic
cathode ray
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KR92003292U
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Korean (ko)
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KR930022373U (en
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정홍필
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이헌조
주식회사 금성사
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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
    • H01J29/02Electrodes; Screens; Mounting, supporting, spacing or insulating thereof
    • H01J29/06Screens for shielding; Masks interposed in the electron stream
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2229/00Details of cathode ray tubes or electron beam tubes
    • H01J2229/0007Elimination of unwanted or stray electromagnetic effects
    • H01J2229/003Preventing or cancelling fields entering the enclosure
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2229/00Details of cathode ray tubes or electron beam tubes
    • H01J2229/07Shadow masks
    • H01J2229/0722Frame

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  • Electrodes For Cathode-Ray Tubes (AREA)

Abstract

내용 없음.No content.

Description

칼라음극선관의 자기실드* 도면의 주요부분에 대한 부호의 설명6 : 고정클립 7 : 거스름8 : 절곡부Magnetic shield of color cathode ray tube * Explanation of symbols for main parts of drawing 6: Fixed clip 7: Change 8: Bend

본 고안은 칼라음극선관의 자기 실드(shield)에 관한 것으로, 특히 지자계 등의 외부 자계를 차폐시켜 주는 내부 자계실드를 조립, 운반취급할 때에 조립공(組立孔)의 거스름(burr)에 의한 불순입자의 발생을 방지하여 방전이나 형광체 발광 불량을 제거하도록 한 칼라음극선관의 자기실드에 관한 것이다.The present invention relates to a magnetic shield of a color cathode ray tube, and in particular, an impurity caused by a burr of an assembling hole when assembling and transporting an internal magnetic shield that shields an external magnetic field such as a geomagnetic field. The present invention relates to a magnetic shield of a color cathode ray tube which prevents generation of particles and eliminates discharge and poor phosphor emission.

일반적으로 사용되는 칼라음극선관은 전자총에서 발생한 전자빔을 섀도우 마스크의 통공으로 통과시킨후 적,청, 녹의 형광체를 발광시켜 칼라 화상을 재현하고 있으며, 전자총에서 발생한 전자빔이 외부자계에 의해 불규직한 방향으로 휘어지는 것을 방지하기 위한 수단으로서 외부자계를 차폐시켜주는 자기실드를 이용하고 있다.Commonly used color cathode ray tube reproduces the color image by passing the electron beam generated from the electron gun through the hole of the shadow mask and emits red, blue, and green phosphors, and the electron beam generated from the electron gun is irregular due to the external magnetic field. A magnetic shield that shields external magnetic fields is used as a means to prevent bending.

제1도는 종래 자계실드 장치를 보인 분해사시도이고, 제2도는 조립상태 단면도로서, 이에 도시한 바와같이 자계실드(1)와 프레임(2)을 수개의 고정클립(6)으로 결함한 구성으로 되어 있는바, 상기 자계실드(1)는 얇은 탄소강판으로서 프레스 가공하여 성형되고, 프레임(2)은 탄소강판으로 프레스 가공하여 성형되며, 자계실드(1)와 프레임(2)에는 고정클립(6)으로 고정하기 위한 삽입공(4)(5)이 각각 형성되어 있다.FIG. 1 is an exploded perspective view showing a conventional magnetic shield device, and FIG. 2 is an assembled cross-sectional view of the magnetic field shield 1 and the frame 2 as shown in FIG. The magnetic field shield 1 is formed by press working as a thin carbon steel sheet, and the frame 2 is formed by press working with a carbon steel sheet, and the fixed clip 6 is formed on the magnetic field shield 1 and the frame 2. Insertion holes (4) and (5) for fixing with each other are formed.

이러한 종래의 자계실드 장치는 조립시 자계실드(1)와 프레임(2)의 삽입공(4)(5)을 서로 일치시킨 다음 고정클립(6)을 삽입하여 고정하며, 이와같이 조립이 완료된 자계실드(1)는 프레임(2)에 견고하게 고정되어 음극선과 작동시 외부자계를 차폐시켜 전자빔이 화면의 정위치에 도달하도록 한다.The conventional magnetic shield device is to match the magnetic shield (1) and the insertion hole (4) (5) of the frame (2) at the time of assembly, and then fixed by inserting a fixing clip (6), as described above (1) is firmly fixed to the frame (2) to shield the external magnetic field during operation with the cathode ray so that the electron beam reaches the correct position of the screen.

그러나, 상기한 바와같은 종래의 장치는 제3도와 같이 프레스 금형에 의해 자계실드(1)의 구멍을 타발할때에 타발 반대방향에는 거스름(burr)(7)이 발생하고, 제2도와 같이 조립한 상태에서 거스름(7)의 날카로운 부분이 프레임(2)의 표면과 접촉되어 있으므로 진동이나 충격이 가하여 지는 경우에 프레임(2)의 표면이 긁어 흑화막을 탁락시키고, 또 거스름(7) 자체가 탈락하여 음극선관을 완성한후 섀도우 마스크(3)의 구멍을 막거나 내부에 부착되어 방전을 일으키는 주요원인이 되었다.However, in the conventional apparatus as described above, when the hole of the magnetic field shield 1 is punched out by the press mold as shown in FIG. 3, a burr 7 is generated in the opposite direction of the punching, and assembled as in FIG. Since the sharp part of the change 7 is in contact with the surface of the frame 2 in one state, the surface of the frame 2 is scratched by the surface of the frame 2 when vibration or shock is applied, and the black film is removed. After the cathode ray tube was completed, the hole of the shadow mask 3 was blocked or adhered to the inside thereof, thereby becoming a main cause of discharge.

음극선관의 내부는 고압이 통전되고 있어서 방전에 취약하므로 상기한 결함은 음극선과 제조시 매우 심각한 문제이고, 섀도우 마스크(3)의 통공이 막히게 되면 형광체의 발광이 방해를 받게 되므로 고품질의 화상을 얻을 수 없게 되어 제품의 품질을 저하시키게 된다.Since the inside of the cathode ray tube is vulnerable to discharge due to high voltage being energized, the above defect is a very serious problem in manufacturing with the cathode ray, and when the opening of the shadow mask 3 is blocked, the emission of the phosphor is obstructed, thereby obtaining a high quality image. It will not be possible to reduce the quality of the product.

그리고, 상기 자계실드(1)의 삽입공(4) 주위에 형성된 거스름(7)이 프레임92)의 반대방향을 향하도록 조립하더라도 진동, 충격이 가하여 지면 고정클립(6)과 마찰되면서 탈락하여 상기한 결함을 여전히 갖게 되는 것이 었다.Further, even when the change 7 formed around the insertion hole 4 of the magnetic field shield 1 is assembled to face the opposite direction of the frame 92, vibration and impact are applied to the ground clip so as to fall off while being rubbed. It would still have one flaw.

본 고안은 상기한 바와같은 종래의 결함을 해소하기 위하여, 칼라음극선관의 방전에 의한 손상이나 섀도우 마스크의 통공 막힘 현상을 방지하도록 안출한 것인바, 이러한 본 고안을 첨부한 도면에 의하여 상세히 설명하면 다음과 같다.The present invention is devised to prevent damage caused by the discharge of the color cathode ray tube or the clogging of the through-holes of the shadow mask in order to solve the conventional defects as described above, the present invention will be described in detail with reference to the accompanying drawings. As follows.

제4도는 본 고안의 일 실시예를 보인 단면도이고, 제5도는 본 고안의 다른 실시예를 보인 단면도로서, 이에 도시한 바와같이, 외부자계에 의한 전자빔의 영향을 제거하는 자계실드(1)와, 섀도우 마스크(3)를 지지하며 상기 자계실드(1)를 지지하는 프레임(2)과, 상기 자계실드(1)와 프레임(2)의 삽입공(4)(5)에 삽입하여 그 자계실드(1)와 프레임(2)을 결함하기 위한 고정클립(6)를 구비한 칼라음극선관에 있어서, 상기 자계실드(1)의 고정부위에 삽입공(4) 주위에 발생하는 거스름(7)의 방향으로 절곡부(7)를 형성하여 구성함을 특징으로 하고 있다.4 is a cross-sectional view showing an embodiment of the present invention, and FIG. 5 is a cross-sectional view showing another embodiment of the present invention. As shown therein, a magnetic field shield 1 for removing the influence of an electron beam by an external magnetic field and The magnetic field shield is inserted into the frame 2 supporting the shadow mask 3 and supporting the magnetic field shield 1, and the insertion holes 4 and 5 of the magnetic field shield 1 and the frame 2. In a color cathode ray tube having a fixing clip (6) for defecting the frame (1) and the frame (2), the change of the change (7) generated around the insertion hole (4) at the fixing portion of the magnetic field shield (1). It is characterized by forming the bent part 7 in the direction.

그리고, 제4도의 실시예는 상기 자계실드(1)의 절곡부(8)가 자계실드(1) 측으로 돌출되게 자계실드(1)와 프레임(2)을 일치시키고, 제5도의 다른 실시예는 자계실드(1)의 절곡부(8)가 프레임(2) 측으로 돌출되게 자계실드(1)와 프레임(2)을 일치시킨후 고정클립(6)으로 고정한 구성으로 되어 있다.In addition, the embodiment of FIG. 4 matches the magnetic field shield 1 and the frame 2 such that the bent portion 8 of the magnetic field shield 1 protrudes toward the magnetic field shield 1, and another embodiment of FIG. The magnetic field shield 1 and the frame 2 are aligned so that the bent portion 8 of the magnetic field shield 1 protrudes toward the frame 2 side, and then fixed with a fixing clip 6.

상기한 바와같은 본 고안의 일 실시예에 의한 자계실드 장치는 자계실드(1)의 절곡부(1)가 프레임(2)과 대향되는 측으로 돌출되게 결함되어 있으므로 자계실드(1)의 삽입공(4) 주위에 형성된 거스름(7)이 프레임(2) 및 고정클립(6)과 떨어져 서로 직접 접촉하지 않도록 되어 있으므로 음극선관의 제조공정시 또는 완성후 이동취급시 외부의 진동이나 충격에 의해 흑화피막이 탈락되지 않고 또 거스름(7)도 탈락되지 않아 섀도우 마스크(3)의 통공 막힘이나 방전 발생을 방지하여 제품의 불량을 제거하고 신뢰성을 향상하는 이점이 있다.The magnetic shield device according to the embodiment of the present invention as described above is defective so that the bent portion 1 of the magnetic shield 1 protrudes to the side opposite to the frame 2 (the insertion hole of the magnetic shield 1 ( 4) Since the change (7) formed around the frame (2) and the fixing clip (6) is not in direct contact with each other, the blackening film may be damaged by external vibration or impact during the manufacturing process of cathode ray tube or during handling after completion. It does not fall off and change (7) is also eliminated, there is an advantage to prevent the blockage of the through-holes or the occurrence of discharge of the shadow mask (3) to remove the defect of the product and improve the reliability.

그리고, 종래 자계실드 장치는 제1도와 같이 자계실드(1)와 프레임(2)이 전면적으로 면접촉하는 것이므로 고정클립(6)으로 고정되는 자계실드(1)와 프레임(2)의 삽입공(4)(5)이 밀착되지 않고 들뜨게 되므로 흑화피막과 거스름(7)이 탈락되어 생기는 불순입자가 자계실드(1)와 프레임(2)의 내부로 유입되는 량이 증가하는 것이었으나, 본 고안의 다른 실시예에 의한 자계실드 장치는 자계실드(1)의 절곡부(8)가 프레임(2)에 부분적으로 접촉하게 조립되어 있으므로 밀착성이 양호하게 조립되므로 불순 입자의 유입이 방지되고 이에따라 섀도우 마스크(3)의 통공 막힘이나 방전 발생을 방지하여 제품의 불량을 제거하고 신뢰성을 향상하는 이점이 있다.In the conventional magnetic field shielding device, since the magnetic field shield 1 and the frame 2 are in surface contact with each other as shown in FIG. 1, the magnetic field shield 1 and the insertion hole of the magnetic field shield 1 and the frame 2 fixed by the fixing clip 6 ( 4) (5) is not in close contact with each other, so that the amount of impurity particles generated by the blackening film and the change (7) falling into the magnetic shield (1) and the frame (2) was increased, but the other In the magnetic field shielding device according to the embodiment, since the bent portion 8 of the magnetic field shield 1 is assembled to partially contact the frame 2, the adhesion is well assembled, thereby preventing the inflow of impurities and thus the shadow mask 3. ), There is an advantage of eliminating defects of the product and improving reliability by preventing the blockage of the through hole or the occurrence of discharge.

Claims (3)

자계실드(1)와 프레임(2)을 삽입공(4)(5)에 고정클립(6)을 끼워 결함하는 것에 있어서, 자계실드(1)의 고정부위에 절곡부(8)를 삽입공(4) 주위에 발생하는 거스름(7)의 방향으로 형성하여 거스름(7)과 흑화피막의 불순입자에 의한 방전과 형광체 발광 불량을 방지하도록 구성함을 특징으로 하는 칼라음극선관의 자기실드.In the case where the magnetic shield 1 and the frame 2 are inserted into the insertion holes 4 and 5 and the fixing clip 6 is defective, the bent portion 8 is inserted into the fixing portion of the magnetic shield 1. 4) The magnetic shield of the color cathode ray tube, which is formed in the direction of the change (7) generated around to prevent discharge due to the impurity particles of the change (7) and the blackening film and the phosphor emission failure. 제1항에 있어서, 상기 자계실드(1)의 절곡부(7)가 자계실드(1) 측으로 돌출되게 자계실드(1)와 프레임(2)을 일치시켜 결함한 것을 특징으로 하는 칼라음극선관의 자기실드.The color cathode ray tube according to claim 1, wherein the bent portion 7 of the magnetic field shield 1 is caused to coincide with the magnetic field shield 1 and the frame 2 so as to protrude toward the magnetic field shield 1 side. Magnetic shield. 제1항에 있어서, 상기 자계실드(1)의 절곡부(8)가 프레임(2) 측으로 돌출되게 자계실드(1)와 프레임(2)을 일치시켜 결함한 것을 특징으로 하는 칼라음극선관의 자기실드.The magnetic field of the color cathode ray tube according to claim 1, wherein the magnetic field shield 1 and the frame 2 coincide with and be defective such that the bent portion 8 of the magnetic field shield 1 protrudes toward the frame 2 side. shield.
KR92003292U 1992-03-02 1992-03-02 Mangetic shield for c-crt KR940006543Y1 (en)

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Application Number Priority Date Filing Date Title
KR92003292U KR940006543Y1 (en) 1992-03-02 1992-03-02 Mangetic shield for c-crt

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KR930022373U KR930022373U (en) 1993-10-16
KR940006543Y1 true KR940006543Y1 (en) 1994-09-26

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