KR890002586B1 - Bead glass of electronic gun - Google Patents

Bead glass of electronic gun Download PDF

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Publication number
KR890002586B1
KR890002586B1 KR1019860010733A KR860010733A KR890002586B1 KR 890002586 B1 KR890002586 B1 KR 890002586B1 KR 1019860010733 A KR1019860010733 A KR 1019860010733A KR 860010733 A KR860010733 A KR 860010733A KR 890002586 B1 KR890002586 B1 KR 890002586B1
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South Korea
Prior art keywords
bead
bead glass
glass
ray tube
cathode ray
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KR1019860010733A
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Korean (ko)
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KR880008391A (en
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고남제
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주식회사 금성사
구자학
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Priority to KR1019860010733A priority Critical patent/KR890002586B1/en
Publication of KR880008391A publication Critical patent/KR880008391A/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
    • H01J29/46—Arrangements of electrodes and associated parts for generating or controlling the ray or beam, e.g. electron-optical arrangement
    • H01J29/48—Electron guns
    • H01J29/485—Construction of the gun or of parts thereof
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2229/00—Details of cathode ray tubes or electron beam tubes
    • H01J2229/48—Electron guns
    • H01J2229/4824—Constructional arrangements of electrodes
    • H01J2229/4831—Electrode supports

Abstract

Device is for preventing formation of a bubble and electric discharge in a tube by fixing a bead part in a bead glass, heating the interior of the bead glass directly, and is for removing path blockage by shadow-mask. A bead glass (6) comprises an upper convex surface (6') and a lower flat surface (6"). The relation to the diameters of the former (6',R) and the latter (6",r) is r>=1/2 R. Perforations (6b) taking the shape of taper are punched on the bead glass (6) with the same space.

Description

음극선관용 전자총의 비드유리Bead glass of electron gun for cathode ray tube

제 1 도는 일반적인 음극선관용 전자총을 보인 정면도.1 is a front view showing an electron gun for a typical cathode ray tube.

제 2 도는 종래의 비드유리를 발췌하여 보인 사시도.2 is a perspective view showing an extract of a conventional bead glass.

제 3 도는 종래의 비드유리에 비드부가 매입된 상태를 보인 설명도.3 is an explanatory view showing a state in which a bead portion is embedded in a bead glass of the prior art.

제 4(a)도, 제4(b)도는 본 발명의 비드유리의 일실시예를 보인 평면도 및 종단면도.4 (a) and 4 (b) are a plan view and a longitudinal sectional view showing one embodiment of the bead glass of the present invention.

제 5(a)도, 제5(b)도는 본 발명의 비드유리의 다른 실시예를 보인 평면도 및 종단면도.5 (a) and 5 (b) are a plan view and a longitudinal sectional view showing another embodiment of the bead glass of the present invention.

제 6 도는 본 발명의 비드유리에 비드부가 매입된 상태를 보인 설명도.6 is an explanatory view showing a state in which the bead portion is embedded in the bead glass of the present invention.

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

1 : 음극지지체 2-5 : 제1-제4그리드1: Cathode support 2-5: 1st-4th grid

1'-5' : 비드부 6 : 비드유리1'-5 ': bead part 6: bead glass

6' : 상면 6" : 하면6 ': Top 6 ": Bottom

6b, 6b' : 관통공 6c : 단턱부6b, 6b ': through hole 6c: stepped portion

본 발명은 음극선관 후방의 네크부에 설치되어 전방의 형광면으로 전자빔을 발사하는 음극선관용 전자총에 있어서, 그리드 등의 전극을 고정시키는 비드유리(bead grass)에 관한 것으로, 특히 전극의 비드부가 매우 양호하게 매입되도록 함은 물론 비드유리에 기포 등이 발생되지 않게 한 음극선관용 전자총의 비드유리에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a bead grass for fixing an electrode such as a grid in an electron gun for a cathode ray tube installed in a neck portion behind a cathode ray tube to emit an electron beam to a fluorescent surface in front, and particularly, a bead portion of an electrode is very good. The present invention relates to a bead glass of an electron gun for a cathode ray tube, of course, in which bubbles are not generated in the bead glass.

일반적으로 음극선관뇽 전자총은 제 1 도에 도시한 바와같인 음극지지체(1) 및 제1-제4그리드(2-5)의 비드부(1'-5')가 고온으로 용융된 한쌍의 비드유리(6)에 매입되어 융착된다. 이와같은 전자총에 있어서, 종래의 비드유리(6)는 제 2 도에 도시한 바와같인 비드부(1'-5')가 매입되는 상면(6')은 볼록면으로 형성하고, 하면(6")은 평편하게 형성하였다.In general, a cathode ray tube gun electron gun is a pair of beads in which the bead portion 1'-5 'of the cathode support 1 and the first to fourth grids 2-5 as shown in FIG. It is embedded in the glass 6 and fused. In such an electron gun, in the conventional bead glass 6, the upper surface 6 'into which the bead portions 1'-5' as shown in FIG. 2 are embedded is formed as a convex surface, and the lower surface 6 ") Formed flat.

이와같이 구성된 종래의 비드유리(6)는 제 3 도에 도시한 바와같이 가스버너로 비드유리(6)를 가열하여 비드부(1'-5')를 매입시키면, 비드유리(6)는 용융되면서 비드부(1'-5')가 매입되는 부위가 오목하게 되어 살이 얇게 형성되므로 비드유리(6)에 음극지지체(1) 및 제1-제 4 그리드(2-5)가 불안정하게 지지되고, 또한 비드부(1'-5')가 매입되면서 용융된 비드유리(6)가 외부로 흘러나와 돌기부(6a)가 형성됨은 물론 비드유리(6)가 외부로 흘러나오는 압력에 의해 음극지지체(1) 및 제1-제 4 그리드(2-5)가 변형되어 제1-제 4 그리드(2-5)의 전자빔 통과공이 변형되므로 전자빔 통로에 수차를 작용시켜 음극선관의 해상도를 저하시키게 되고, 가스 버너로 비드유리(6)를 가열시 직접 비드유리(6)의 상면(6')만을 가열하여 비드유리(6)의 내부까지 가얼시키기 위해서는 상면(6')이 과열되므로 비드유리(6)가 냉각된 후에는 상면(6')의 표면에 기포가 발생하게 되고, 음극선관의 제조공정시 기포가 파괴되면서 미세한 이물질이 되어 관내방전을 일으킴은 물론 샤도우 마스크의 통공을 막아 음극선관이 화상을 재현할 수 없게 되는 결합이 있었다.In the conventional bead glass 6 configured as described above, the bead glass 6 is melted by heating the bead glass 6 with a gas burner and embedding the bead portions 1'-5 'as shown in FIG. Since the site where the bead portions 1'-5 'are embedded is concave and thinly formed, the cathode support 1 and the first-fourth grid 2-5 are unstablely supported on the bead glass 6, In addition, as the bead portions 1'-5 'are embedded, the molten bead glass 6 flows to the outside to form the protrusions 6a, as well as the negative electrode support 1 due to the pressure that the bead glass 6 flows to the outside. ) And the first-fourth grid (2-5) is deformed to deform the electron beam through hole of the first-fourth grid (2-5), thereby reducing the resolution of the cathode ray tube by applying aberration to the electron beam passage, When heating the bead glass 6 with a burner, the upper surface 6 'may be heated directly to the inside of the bead glass 6 by heating only the upper surface 6' of the bead glass 6. After the bead glass 6 is cooled due to overheating, bubbles are generated on the surface of the upper surface 6 ', and bubbles are destroyed during the manufacturing process of the cathode ray tube, resulting in fine foreign matters, causing discharge in the tube, as well as through the shadow mask. There was a bond that prevented the cathode ray tube from reproducing the image.

본 발명은 이와같은 종래의 결합을 감안하여, 비드유리에 삽입공을 천공하여 구성함으로써 비드부가 비드유리에 견고하게 매입됨은 물론 비드유리의 내부를 직접 가열시키면서 비드부를 매입시켜 상면에 기포가 형성되는 것을 방지하게 창안한 것으로, 이를 첨부된 제 4 도 내지 제 6 도의 도면에 의하여 상세히 설명하면 다음과 같다.In the present invention, in view of such a conventional coupling, by inserting a hole in the bead glass by constructing the bead portion is firmly embedded in the bead glass as well as directly bubbling the bead while heating the inside of the bead glass bubbles are formed on the upper surface Invented to prevent the present invention will be described in detail with reference to the accompanying drawings of FIGS. 4 to 6 as follows.

제 4(a)도, 제4(b)도는 본 발명의 비드유리의 일실시예를 보인 평면도 및 종단면도로서, 이에 도시한 바와같이 비드유리(6)의 상면(6')에서 하면(6")까지 일정간격으로 테이퍼상의 관통공(6b)을 천공하여 상면(6')의 관통공(6b)의 직경(R)과 하면(6")의 관통공(6b)의 직경(r)이

Figure kpo00001
로 되게 한 것이다.4 (a) and 4 (b) are a plan view and a longitudinal cross-sectional view showing one embodiment of the bead glass of the present invention, as shown in the lower surface 6 'of the bead glass 6 (6'). Through the tapered through hole 6b at regular intervals up to "), the diameter R of the through hole 6b of the upper surface 6 'and the diameter r of the through hole 6b of the lower surface 6 "
Figure kpo00001
It was made.

그리고, 제 5(a)도, 제5(b)도는 본 발명의 비드유리의 다른 실시예를 보인 평면도 및 종단면도로서, 이에 도시한 바와같이 관통공(6b')의 중간 상부와 하부의 직경(R)(r)을 일정하게 하여 중간부에 단턱부(6c)가 형성되게 한 것으로, 상기에서 관통공(6b)(6b')은 일정간격으로 천공하지 않고, 비드부(1'-5')가 매입되는 위치에만 천공하여 비드유리(6)를 구성할 수도 있다.5 (a) and 5 (b) are a plan view and a longitudinal sectional view showing another embodiment of the bead glass of the present invention. As shown therein, the diameters of the middle upper and lower portions of the through hole 6b 'are shown. (R) (r) is made constant so that the stepped part 6c is formed in the intermediate part. In the above, the through holes 6b and 6b 'do not puncture at regular intervals, and the bead part 1'-5 The bead glass 6 may be formed by drilling only at a position where the ') is embedded.

이와같이 구성된 본 발명은 종래와 마찬가지로 음극지지체(1) 및 제1-제 4 그리드(2-5)를 일정간격으로 정렬한 후 가스버너로 비드유리(6)를 가열하여 음극지지체(1) 및 제1-제 4 그리드(2-5)의 비드부(1'-5')를 매입하게 되는데, 이때, 본 발명의 비드유리는 가스버너의 화염이 비드유리(6)의 상면(6')만을 가열하지 않고, 관통공(6b)(6b')을 통하여 비드유리(6)의 내부까지 가열하게 되므로 비드유리(6)는 상면(6')과 내부가 고르게 가열되고, 또한 가스버너의 화염압력이 상면(6')의 관통공(6b)(6b')을 통해 그의 하면(6")으로 나오게 되므로 비드유리(6)의 상면(6')에 용융된 유동질의 유리가 흘러 나오지 않고, 상면(6')에 비드부(1'-5')를 삽입하면, 삽입된 비드부(1'-5')의 양만큼 용융된 유리가 관통공(6b)(6b')안으로 들어가 메워지게 되어 외부로 돌출되지 않게 된다.According to the present invention configured as described above, the cathode support 1 and the first to fourth grids 2-5 are aligned at regular intervals, and then the bead glass 6 is heated with a gas burner to heat the cathode support 1 and the first. The bead portion 1'-5 'of the first-fourth grid 2-5 is embedded. In this case, the bead glass of the present invention has a flame of the gas burner having only the upper surface 6' of the bead glass 6. Since it heats up to the inside of the bead glass 6 through the through holes 6b and 6b 'without heating, the bead glass 6 is heated evenly between the upper surface 6' and the flame pressure of the gas burner. Through the through holes 6b and 6b 'of the upper surface 6', it comes out to the lower surface 6 ", so that the molten fluid glass does not flow out to the upper surface 6 'of the bead glass 6. When the bead portions 1'-5 'are inserted into the 6', the molten glass is filled into the through holes 6b and 6b 'by the amount of the inserted bead portions 1'-5'. It will not protrude to the outside.

따라서, 제 6 도에 도시한 바와같이 비드유리(6)는 비드부(1'-5')가 매입된 브위가 볼록하게 살이 깊고, 양외측으로 종래와 같이 돌기부가 형성되지 않으므로 음극지지체(1) 및 제1-제 4 그리드(2-5)가 견고하게 비드유리(6)에 고정되고, 또한 용융된 유리가 관통공(6b)(6b')를 메우면서 비드부(1'-5')가 매입되어 음극지지체(1) 및 제1-제 4 그리드(2-5)에 아무 압력도 미치지 않게 되므로 전자빔 통과공이 변형되지 않음은 물론 비드유리(6)의 상면(6')을 과열하지 않고서도 내부를 용융시킬 수 있어 냉각후 상면(6')에 기포가 형성되지 않게 된다.Therefore, as shown in FIG. 6, the bead glass 6 has a deep convex portion where the bead portions 1'-5 'are embedded, and projections are not formed on both sides of the negative electrode support 1. ) And the first-fourth grid 2-5 are firmly fixed to the bead glass 6, and the molten glass fills the through holes 6b and 6b ', and the bead portions 1'-5'. ) Is embedded so that no pressure is applied to the cathode support 1 and the first to fourth grids 2-5, so that the electron beam through hole is not deformed and the upper surface 6 'of the bead glass 6 is not overheated. The inside can be melted without cooling, so that bubbles are not formed on the upper surface 6 'after cooling.

이상에서 설명한 바와 같이 본 발명은 음극지지체 및 제1-제 4 그리드가 비드유리에 견고하게 고정됨은 물론 전자빔 통과공이 변형되지 않아 전자빔 통로에 수차를 작용시키지 않게 되므로 음극선관의 해상도를 저하시키지 않게 되고, 또한 비드유리에 기포가 발생하지 않아 음극선관의 제조 공정시 관내에 이물질이 발생하지 않게 되므로 관내 방전이 발생하는 것을 방지하고, 샤도우 마스크의 통공을 막는 등의 현상을 배재할 수 있는 효과가 있다.As described above, the present invention not only lowers the resolution of the cathode ray tube because the cathode support and the first-fourth grid are firmly fixed to the bead glass, and the electron beam passage hole is not deformed so that aberration does not act on the electron beam passage. In addition, since bubbles do not occur in the bead glass, foreign matter does not occur in the tube during the manufacturing process of the cathode ray tube, thereby preventing the discharge of the tube and preventing the opening of the shadow mask. .

Claims (3)

상면(6')이 볼록면으로 되고, 하면(6")이 평편하게 된 비드유리(6)에 음극지지체(1) 및 제1-제 4 그리드(2-5)의 비드부(1'-5')를 매입 고정시키는 음극선관용 전자총의 비드유리에 있어서, 상기 상면(6')의 직경(R)과 하면(6")의 직경(r)이
Figure kpo00002
인 테이퍼상의 관통공(6b)을 비드유리(6)에 일정간격으로 다수개 천공하여 구성함을 특징으로 하는 음극선관용 전자총의 비드유리.The bead portion 1'- of the negative electrode support 1 and the first-fourth grid 2-5 is formed on the bead glass 6 whose upper surface 6 'becomes a convex surface and the lower surface 6 "is flat. In the bead glass of the cathode ray tube electron gun in which 5 ') is embedded, the diameter R of the upper surface 6' and the diameter r of the lower surface 6 "are
Figure kpo00002
A bead glass for an electron gun for a cathode ray tube, characterized in that a plurality of through-holes (6b) having a tapered shape are drilled at a predetermined interval on the bead glass (6). 제 1 항에 있어서, 관통공(6b')의 중간부에 단턱부(6c)를 형성하여 단턱부(6c)의 상부와 하부의 직경(R)(r)이 일정하게 천공함을 특징으로 하는 음극선관용 전자총의 비드유리.The method according to claim 1, characterized in that the step portion 6c is formed in the middle portion of the through hole 6b 'so that the diameter R of the upper and lower portions of the step portion 6c is uniformly drilled. Bead glass of electron gun for cathode ray tube. 제 1 항에 있어서, 관통공(6b)를 비드부(1'-5')의 매입위치에 천공함을 특징으로 하는 음극선관용 전자총의 비드유리.The bead glass of a cathode ray tube electron gun according to claim 1, wherein the through hole (6b) is drilled at an embedding position of the bead portion (1'-5 ').
KR1019860010733A 1986-12-15 1986-12-15 Bead glass of electronic gun KR890002586B1 (en)

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KR1019860010733A KR890002586B1 (en) 1986-12-15 1986-12-15 Bead glass of electronic gun

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KR890002586B1 true KR890002586B1 (en) 1989-07-19

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