KR910006635Y1 - Shadowmask structure of color cathode ray tube - Google Patents

Shadowmask structure of color cathode ray tube Download PDF

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Publication number
KR910006635Y1
KR910006635Y1 KR2019890010352U KR890010352U KR910006635Y1 KR 910006635 Y1 KR910006635 Y1 KR 910006635Y1 KR 2019890010352 U KR2019890010352 U KR 2019890010352U KR 890010352 U KR890010352 U KR 890010352U KR 910006635 Y1 KR910006635 Y1 KR 910006635Y1
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South Korea
Prior art keywords
cathode ray
ray tube
color cathode
shadow mask
skirt portion
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KR2019890010352U
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Korean (ko)
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KR910003421U (en
Inventor
김동률
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삼성전관 주식회사
김정배
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Priority to KR2019890010352U priority Critical patent/KR910006635Y1/en
Publication of KR910003421U publication Critical patent/KR910003421U/en
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Publication of KR910006635Y1 publication Critical patent/KR910006635Y1/en

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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
    • H01J29/07Shadow masks for colour television tubes
    • H01J29/073Mounting arrangements associated with shadow masks
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2229/00Details of cathode ray tubes or electron beam tubes
    • H01J2229/07Shadow masks
    • H01J2229/0716Mounting arrangements of aperture plate to frame or vessel
    • 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

칼라 음극선관용 섀도우마스크Shadow Masks for Color Cathode Ray Tubes

제1도는 종래 칼라 음극선관용 섀도우마스크 프레임에 조립체의 사사도.1 is a perspective view of an assembly in a shadow mask frame for a conventional color cathode ray tube.

제2도는 본 고안에 따른 칼라음극선관용 섀도우마스크의 모서리부를 발췌하여 도시한 사시도.Figure 2 is a perspective view showing the corner portion of the shadow mask for color cathode ray tube according to the present invention.

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

10 : 섀도우마스크 11 : 유효면10: shadow mask 11: effective surface

11a : 전자빔통과공 12 : 스커트부11a: electron beam passing hole 12: skirt portion

13 : 보강비이드 20 : 프레임13: reinforcement bead 20: frame

본 고안은 칼라 음극선관용 섀도우마스크에 관한 것으로서, 특히 섀도우마스크의 스커트(Skirt)부 벌어짐을 방지하여 프레임과의 조립 정밀도를 향상시킨 것에 관한 것이다.The present invention relates to a shadow mask for a color cathode ray tube, and more particularly, to improve the assembly precision with a frame by preventing the skirt portion of the shadow mask from being opened.

무수한 어퍼어쳐(또는 구멍)가 형성되어 있는 칼라 음극선관용 섀도우마스크는 고정틀인 프레임에 의해 지지된채 패널의 내측공간부에 위치되어서 스크린면으로 주사되는 전자빔을 걸러 주는 일종의 필터 역할을 하는 것인 바, 칼라음극선관에 있어서 이의 역할은 매우 큰 것이다.The shadow mask for color cathode ray tube, which has numerous apertures (or holes), is located in the inner space of the panel, supported by a frame, which is a fixed frame, and serves as a kind of filter that filters the electron beam that is scanned to the screen surface. In this case, the role of the color cathode ray tube is very large.

이와 같은 섀도우 마스크는 일반적으로 제1도에 도시된 바와 같이 많은 빔통과공(11a)이 뚫려 있는 섀도우마스크(10)의 유효면(11)과 그 가장자리에 프레임(20)을 감싸도록 된 스커트부(12)로 형성되어 있는바, 상기 섀도우마스크 몸체가 가공되는 과정 즉, 그 몸체 가장자리의 스커트부(12)가 유효면(11)에 대하여 상기 스커트부(12)가 직각을 이루도록 프레스가공 될때에 완전한 소성변형이 이루어지지 못하고 일정한 량의 탄성변형이 동반되기 때문에 대개가 직각을 이루지 못하게 된다. 따라서 프레임(20)에 대한 섀도우마스크(10)의 장착상태가 불량하게 되는데, 직각도가 불량하게 되면 프레임(20)의 가장자리 표면에 대하여 섀도우마스크 스커트부(12)가 들뜨기 때문에 정확한 용접위치를 정하기가 곤란하기 때문인 것이다. 더우기 상기와 같이 스커트부(12)가 들뜬 상태에서 용접이 이루어지게 되면 들떳던 섀도우마스크(10)의 스커트부(12)가 프레임(20)에 밀착되는 반면에 스커트부(12)에 인접하는 빔통과공(11a)의 형태가 이상 변형되게 된다. 따라서 설계적으로 요구되는 섀도우마스크(10)를 얻을 수 없게 되며, 결과적으로는 고품위의 음극선관을 제작할 수 없게 되는 것이다.Such a shadow mask generally includes a skirt portion which surrounds the effective surface 11 of the shadow mask 10 through which many beam passing holes 11a are drilled and the frame 20 at the edge thereof, as shown in FIG. 1. It is formed of (12), when the process of the shadow mask body is processed, that is, when the skirt portion 12 of the body edge is pressed so that the skirt portion 12 is perpendicular to the effective surface 11 Since full plastic deformation is not achieved and a certain amount of elastic deformation is accompanied, it is usually impossible to form a right angle. Therefore, the mounting state of the shadow mask 10 to the frame 20 is poor, if the right angle is poor, the shadow mask skirt portion 12 is lifted with respect to the edge surface of the frame 20 to determine the correct welding position Is because it is difficult. Furthermore, when welding is performed while the skirt portion 12 is excited as described above, the skirt portion 12 of the shadow mask 10 that is excited is in close contact with the frame 20 while the beam adjacent to the skirt portion 12 is exposed. The shape of the through hole 11a is abnormally deformed. Therefore, it is impossible to obtain the shadow mask 10 required by design, and as a result, a high quality cathode ray tube cannot be manufactured.

따라서 본 고안은 상기의 문제점을 개선하기 위하여 그 몸체 유효면의 둘레에 형성되는 스커트의 직각도가 향상된 칼라음극선관용 섀도우마스크를 제공함에 그 목적이 있다.Accordingly, an object of the present invention is to provide a shadow mask for color cathode ray tube, which has an improved squareness of a skirt formed around the effective surface of the body in order to improve the above problems.

상기 목적을 달성하기 위하여 본 고안은, 전자빔이 통과하는 무수한 빔통과공이 형성된 유효면과 그 가장자리에 직각으로 절곡 형성되어 프레임을 감싸도록된 스커트부를 갖는 칼라 음극선관용 섀도우마스크에 있어서, 상기 스커트부 둘레를 따라서 연속된 강도보강용 보강비이드를 형성하도록 하는 점에 그 특징이 있다.In order to achieve the above object, the present invention, in the shadow mask for color cathode ray tube having an effective surface through which countless beam passing holes are formed and the skirt portion is bent at right angles to the edge to surround the frame, the skirt portion circumference Therefore, there is a feature in that to form a continuous strength reinforcement bead according to.

이하 도면에 예시된 실시예를 통하여 본 고안을 더욱 상세하게 설명한다.Through the embodiments illustrated in the drawings will be described in more detail the present invention.

제2도에는 본 고안에 따른 칼라 음극선관용 섀도우마스크가 도시되어 있는 바 일정곡률을 갖도록 만곡형성된 유효면(11)에 무수한 빔통과공(11a)이 형성되어, 그 가장자리연부에 직각으로 절곡연장 되어서 프레임(20)의 측면에 밀착되는 스커트부(12)가 형성된다. 그리고 이 스커트부(12)에는 강도보강용 보강비이드(13)가 형성되는데 이는 스커트부(12)를 따라서 이에 평행하게 연속 형성되며 스커트부(12)의 네모퉁이 양측에는 일정길이 만곡된 절제부(14)(14)가 형성된다.Figure 2 shows a shadow mask for the color cathode ray tube according to the present invention is a myriad of beam passing holes (11a) is formed on the effective surface 11 is formed to be curved to have a constant curvature, is bent and extended at right angles to the edge edge Skirt portion 12 is in close contact with the side of the frame 20 is formed. In addition, the skirt portion 12 is formed with a reinforcing bead 13 for strength reinforcement, which is continuously formed parallel to the skirt portion 12, and the cutout portion is curved at a constant length on both sides of the four corners of the skirt portion 12. (14) (14) are formed.

이와 같이 구성된 본 고안 칼라음극선관용 섀도우마스크(10)는, 상하금형을 갖는 프레스 가공기(도면에는 도시되어 있지 않음)에 의하여 압형되는데 상기 스커트부(12)가, 유효면(11)에 대하여 직각으로 형성될때에 상기 스커트부(12)에 보강비이드(13)가 형성되는 것이다.The shadow mask 10 for the present invention color cathode ray tube constructed as described above is pressed by a press working machine (not shown) having an upper and lower mold, and the skirt portion 12 is perpendicular to the effective surface 11. When formed, the reinforcement bead 13 is formed in the skirt portion 12.

이와 같이 스커트부(12)에 보강비이드(13)를 형성하면 스커트부(12)의 벌어짐을 억제할 수 있게 된다. 이를 다시 설명하면 프레스가공시 스커트가 유효면으로 부터 절곡 형성될 때에 완전한 소성변형으로써 금형에서 압형된 그대로의 직각도를 유지할 수 있어야 하는데 약간의 탄성변형이 이루어짐으로써 이에 의해 스커트부(11)의 벌어짐이 야기된다. 이는 상기 강도보강용 보강비이드(13)로서 억제할 수 있다.Thus, when the reinforcement bead 13 is formed in the skirt part 12, the spreading of the skirt part 12 can be suppressed. In other words, when the skirt is bent from the effective surface during press working, it must be able to maintain the squareness as it is pressed in the mold as a complete plastic deformation, and the elasticity of the skirt portion 11 is thereby caused by a slight elastic deformation. This is caused. This can be suppressed as the strength reinforcing bead 13.

한편 섀도우마스크가 프레임(20)에 고착된 상태에서 음극선관의 패널내측 전면에 장착되어 전자총으로 부터 발생되는 전자빔이 유효면(11)에 형성된 빔통과공(11a)을 통과하게 되면 유효면에 충돌된 전자빔에 의해 상당한 열이 발생하게 되며, 이에 의해 유효면과 스커트부의 열팽창이 야기 되는 바, 스커트부(12)의 보강비이드(13)에 의해 흡수된다. 즉 보강비이드(13)가 제2도에 도시된 바와 같이 스커트부(12)에 만곡 형성되어 있으므로 보강비이드(13)는 유효면(11)의 열팽창량에 의하여 더욱 만곡 됨으로써 가능케 된다.On the other hand, when the shadow mask is fixed to the frame 20 and mounted on the inner surface of the panel of the cathode ray tube, the electron beam generated from the electron gun passes through the beam passing hole 11a formed in the effective surface 11 and collides with the effective surface. Significant heat is generated by the generated electron beam, which causes thermal expansion of the effective surface and the skirt, which is absorbed by the reinforcing beads 13 of the skirt 12. That is, since the reinforcement bead 13 is curved in the skirt portion 12 as shown in FIG. 2, the reinforcement bead 13 can be further curved by the amount of thermal expansion of the effective surface 11.

이와 같이 본 고안 칼라음극선관용 섀도우마스크는 보강비이드가 형성되어 있었으므로써 스커트부의 성형시 유효면에 대하여 외측방향으로의 벌어짐이 방지되고 아울러 프레임에 용접될 때에는 열적 안정화 될 수 있는 것이다.As such, the shadow mask for the color cathode ray tube of the present invention has a reinforcing bead formed therein, thereby preventing the spreading outward with respect to the effective surface when forming the skirt portion, and thermally stabilizing when welding to the frame.

Claims (1)

칼라브라운관의 패널 내측면에 형성된 형광막과 일정 간격으로 유지되며, 전자총으로부터 방출되는 전자빔이 통과하는 유효면(11)과 유효면(11)에 직각으로 형성되어 프레임(20)을 감싸도록 된 스커트부(12)를 구비하여 된 칼라음극선관용 섀도우마스크에 있어서, 상기 스커트부(12)에 보강비이드(13)를 연속형성하여서 된 것을 특징으로 하는 칼라음극선관용 섀도우마스크.The skirt is maintained at a predetermined interval with the fluorescent film formed on the inner surface of the panel of the color brown tube, and is formed at right angles to the effective surface 11 and the effective surface 11 through which the electron beam emitted from the electron gun passes to surround the frame 20. The shadow mask for color cathode ray tube provided with the part 12 WHEREIN: The shadow mask for color cathode ray tube characterized by the continuous formation of the reinforcement bead 13 in the said skirt part 12.
KR2019890010352U 1989-07-14 1989-07-14 Shadowmask structure of color cathode ray tube KR910006635Y1 (en)

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Application Number Priority Date Filing Date Title
KR2019890010352U KR910006635Y1 (en) 1989-07-14 1989-07-14 Shadowmask structure of color cathode ray tube

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Application Number Priority Date Filing Date Title
KR2019890010352U KR910006635Y1 (en) 1989-07-14 1989-07-14 Shadowmask structure of color cathode ray tube

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KR910006635Y1 true KR910006635Y1 (en) 1991-08-26

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Publication number Priority date Publication date Assignee Title
JP2000011911A (en) * 1998-06-26 2000-01-14 Hitachi Ltd Color cathode-ray tube having shadow mask

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