JPH06103897A - Manufacture of cathode-ray tube - Google Patents
Manufacture of cathode-ray tubeInfo
- Publication number
- JPH06103897A JPH06103897A JP24943692A JP24943692A JPH06103897A JP H06103897 A JPH06103897 A JP H06103897A JP 24943692 A JP24943692 A JP 24943692A JP 24943692 A JP24943692 A JP 24943692A JP H06103897 A JPH06103897 A JP H06103897A
- Authority
- JP
- Japan
- Prior art keywords
- funnel
- stem
- melting point
- low melting
- point glass
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は陰極線管の製造方法に
関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a cathode ray tube.
【０００２】[0002]
【従来の技術】従来の陰極線管の製造方法においては、
パネルとファンネルとを低融点ガラス（フリットガラ
ス）を介して溶着したのち、ファンネルのネック部に電
子銃が取り付けられたステムを取り付けている。2. Description of the Related Art In a conventional cathode ray tube manufacturing method,
After the panel and the funnel are welded together through a low-melting glass (frit glass), a stem with an electron gun is attached to the neck of the funnel.
【０００３】なお、この種の方法に関連するものとして
は、特開昭６２−６９４３４号公報、実開平３−１２６
３５１号公報に記載されたものが挙げられる。A method related to this type of method is disclosed in Japanese Patent Laid-Open No. 62-69434 and Japanese Utility Model Laid-Open No. 3-126.
The one described in Japanese Patent No. 351 is cited.
【０００４】[0004]
【発明が解決しようとする課題】しかし、このような陰
極線管の製造方法においては、パネルとファンネルとの
取付と、ファンネルのネック部とステムとの取付とを別
々に行なうから、製造工程が複雑となり、製造コストが
高価となる。However, in such a method of manufacturing a cathode ray tube, since the panel and the funnel are attached to each other and the funnel neck and the stem are attached to each other, the manufacturing process is complicated. Therefore, the manufacturing cost becomes high.
【０００５】この発明は上述の課題を解決するためにな
されたもので、製造コストが安価である陰極線管の製造
方法を提供することを目的とする。The present invention has been made to solve the above problems, and an object of the present invention is to provide a method of manufacturing a cathode ray tube which is inexpensive in manufacturing cost.
【０００６】[0006]
【課題を解決するための手段】この目的を達成するた
め、この発明においては、パネル、ファンネルの少なく
とも一方に第１の低融点ガラスを塗布し、上記ファンネ
ルのネック部、電子銃を保持したステムの少なくとも一
方に第２の低融点ガラスを塗布し、上記第１、第２の低
融点を同時に加熱する。In order to achieve this object, according to the present invention, at least one of a panel and a funnel is coated with a first low-melting glass, and a stem holding the neck portion of the funnel and the electron gun. A second low melting point glass is applied to at least one of the above, and the first and second low melting points are simultaneously heated.
【０００７】[0007]
【作用】この陰極線管の製造方法においては、パネルと
ファンネルとの取付と、ファンネルのネック部とステム
との取付とを同時に行なうことができる。In this method of manufacturing a cathode ray tube, the panel and the funnel can be attached and the neck portion and the stem of the funnel can be attached at the same time.
【０００８】[0008]
【実施例】まず、この発明に係る陰極線管の製造方法の
概略を説明する。まず、図１に示すように、ファンネル
２のパネル１との接合面に第１の低融点ガラス５を塗布
するとともに、ファンネル２のネック部２ａのステム３
との接合面に第２の低融点ガラス６を塗布する。この場
合、低融点ガラス６が溶着後にネック部２ａの外径外に
はみ出さないように、低融点ガラス６を少なめに塗布す
る。また、ステム３の外径はネック部２ａの外径よりも
小さく、ステム３には電子銃７が取り付けられ、またス
テム３には排気管４が設けられている。つぎに、図２に
示すように、パネル１、ステム３をファンネル２に近づ
け、低融点ガラス５、６を同時に加熱することにより、
パネル１、ステム３とファンネル２とを低融点ガラス
５、６を介して溶着する。DESCRIPTION OF THE PREFERRED EMBODIMENTS First, an outline of a method for manufacturing a cathode ray tube according to the present invention will be described. First, as shown in FIG. 1, the first low-melting-point glass 5 is applied to the joint surface of the funnel 2 with the panel 1, and the stem 3 of the neck portion 2 a of the funnel 2 is applied.
The second low melting point glass 6 is applied to the joint surface of the. In this case, the low-melting-point glass 6 is applied in a small amount so that the low-melting-point glass 6 does not protrude to the outside of the outer diameter of the neck portion 2a after welding. The outer diameter of the stem 3 is smaller than the outer diameter of the neck portion 2a, the electron gun 7 is attached to the stem 3, and the exhaust pipe 4 is provided in the stem 3. Next, as shown in FIG. 2, by bringing the panel 1 and the stem 3 close to the funnel 2 and heating the low-melting-point glasses 5 and 6 at the same time,
The panel 1, the stem 3 and the funnel 2 are welded together via the low melting point glasses 5 and 6.
【０００９】この陰極線管の製造方法においては、パネ
ル１とファンネル２との取付と、ファンネル２のネック
部２ａとステム３との取付とを同時に行なうことができ
るから、製造工程が簡単になり、製造コストが安価とな
る。また、ステム３の外径をネック部２ａの外径より小
さくしており、また低融点ガラス６を少なめに塗布して
いるから、偏向コイル（図示せず）の内径がネック部２
ａの外径とほぼ等しくても、偏向コイルを容易に取り付
けることができる。In this method of manufacturing a cathode ray tube, since the panel 1 and the funnel 2 can be mounted and the neck portion 2a of the funnel 2 and the stem 3 can be mounted at the same time, the manufacturing process is simplified. Manufacturing cost is low. Further, since the outer diameter of the stem 3 is smaller than the outer diameter of the neck portion 2a and the low melting point glass 6 is applied in a small amount, the inner diameter of the deflection coil (not shown) is equal to that of the neck portion 2a.
Even if the outer diameter of a is substantially equal, the deflection coil can be easily attached.
【００１０】なお、上述実施例においては、ファンネル
２のネック部２ａに低融点ガラス６を塗布したが、図３
に示すように、ステム３に第２の低融点ガラス９を塗布
してもよく、また図４に示すように、ファンネル２のネ
ック部２ａの内径よりも小さい外径を有するステム１０
の外周部に第２の低融点ガラス１１を塗布し、つぎに図
５に示すように、ネック部２ａ内にステム１０を挿入し
た状態で低融点ガラス１１を加熱してもよい。Although the low melting point glass 6 is applied to the neck portion 2a of the funnel 2 in the embodiment described above, FIG.
As shown in FIG. 4, the stem 3 may be coated with a second low melting point glass 9, and as shown in FIG. 4, the stem 10 having an outer diameter smaller than the inner diameter of the neck portion 2a of the funnel 2.
The second low melting point glass 11 may be applied to the outer peripheral portion of, and then the low melting point glass 11 may be heated with the stem 10 inserted in the neck portion 2a as shown in FIG.
【００１１】つぎに、図６により、この発明に係る陰極
線管の製造方法を詳細に説明する。まず、低融点ガラス
５、６として同じ材質のものを用い、ステム３と低融点
ガラス６とを当接し、パネル１と低融点ガラス５との間
に隙間を設けた状態で、排気管４に不活性ガス供給管１
３を接続し、不活性ガス供給管１３からＡｒ、Ｎ2等の
不活性ガスを供給して、ファンネル２内の空気を不活性
ガスで置換し、置換完了後にファンネル２等を焼成炉１
２内に挿入して、低融点ガラス５、６を同時に加熱する
ことにより、パネル１、ステム３とファンネル２とを低
融点ガラス５、６を介して溶着する。Next, the method of manufacturing the cathode ray tube according to the present invention will be described in detail with reference to FIG. First, the low melting glass 5 and 6 made of the same material are used, the stem 3 and the low melting glass 6 are brought into contact with each other, and a gap is provided between the panel 1 and the low melting glass 5, and the exhaust pipe 4 is Inert gas supply pipe 1
3 is connected and an inert gas such as Ar or N 2 is supplied from the inert gas supply pipe 13 to replace the air in the funnel 2 with the inert gas. After the replacement is completed, the funnel 2 etc.
The low melting point glass 5 and 6 is inserted into 2 and heated at the same time, whereby the panel 1, the stem 3 and the funnel 2 are welded together via the low melting point glass 5 and 6.
【００１２】この陰極線管の製造方法においては、ファ
ンネル２内の空気を不活性ガスで置換した後に、低融点
ガラス５、６を加熱しているから、パネル１、ステム３
とファンネル２との溶着時に電子銃７の電極が酸化する
のを防止することができるので、電子ビームの放出特
性、動作特性に支障が生ずることがない。In this method of manufacturing a cathode ray tube, the low melting glass 5 and 6 are heated after the air in the funnel 2 is replaced with an inert gas, so that the panel 1 and the stem 3 are heated.
Since it is possible to prevent the electrodes of the electron gun 7 from being oxidized during the welding of the electron beam and the funnel 2, there is no problem in the electron beam emission characteristics and the operation characteristics.
【００１３】つぎに、図７により、この発明に係る他の
陰極線管の製造方法を詳細に説明する。まず、低融点ガ
ラス６として低融点ガラス５よりも短時間で溶着するこ
とができるものを用い、パネル１と低融点ガラス５とを
当接した状態で、不活性ガス供給管１３をファンネル２
内に挿入し、不活性ガス供給管１３から不活性ガスを供
給して、ファンネル２内の空気を不活性ガスで置換し、
置換完了後にファンネル２等を底上げ部１４ａを有する
焼成炉１４内に挿入して、低融点ガラス５を加熱する。
この場合、ネック部２ａを底上げ部１４ａから露出させ
る。つぎに、ステム３をネック部２ａに近づけ、ネック
部２ａをも焼成炉１４内に挿入し、低融点ガラス５、６
を同時に加熱することにより、パネル１、ステム３とフ
ァンネル２とを低融点ガラス５、６を介して溶着する。Next, a method of manufacturing another cathode ray tube according to the present invention will be described in detail with reference to FIG. First, as the low melting point glass 6, one that can be welded in a shorter time than the low melting point glass 5 is used, and the inert gas supply pipe 13 is connected to the funnel 2 with the panel 1 and the low melting point glass 5 in contact with each other.
The inside of the funnel 2 is replaced with an inert gas by supplying the inert gas from the inert gas supply pipe 13
After the replacement is completed, the funnel 2 or the like is inserted into the firing furnace 14 having the raised bottom portion 14a to heat the low melting point glass 5.
In this case, the neck portion 2a is exposed from the raised bottom portion 14a. Next, the stem 3 is brought close to the neck portion 2a, the neck portion 2a is also inserted into the firing furnace 14, and the low melting point glass 5, 6
The panel 1, the stem 3 and the funnel 2 are welded to each other through the low-melting-point glasses 5 and 6 by simultaneously heating.
【００１４】この陰極線管の製造方法においては、ネッ
ク部２ａの加熱時間が短くなるから、電子銃７の信頼性
が向上する。In the method of manufacturing the cathode ray tube, the heating time of the neck portion 2a is shortened, so that the reliability of the electron gun 7 is improved.
【００１５】なお、上述実施例においては、低融点ガラ
ス５、６を焼成炉１２、１４で加熱したが、低融点ガラ
ス５を焼成炉で加熱し、低融点ガラス６を他の加熱装置
によって加熱してもよい。In the above embodiment, the low-melting glass 5 and 6 was heated in the firing furnaces 12 and 14, but the low-melting glass 5 is heated in the firing furnace and the low-melting glass 6 is heated by another heating device. You may.
【００１６】図８は低融点ガラスを介してファンネルと
ステムとを溶着するための加熱装置を示す概略図、図９
は図８に示した加熱装置の一部を示す断面図である。図
に示すように、高圧空気を加熱する空気加熱器１５がス
リット状開口部１７を有する熱風吹出口１６に接続さ
れ、熱電対１８によって測定された空気温度に基づいて
空気加熱器１５を制御する温度制御器１９が設けられて
いる。FIG. 8 is a schematic view showing a heating device for welding the funnel and the stem through the low melting point glass, FIG.
FIG. 9 is a cross-sectional view showing a part of the heating device shown in FIG. 8. As shown in the figure, an air heater 15 for heating high pressure air is connected to a hot air outlet 16 having a slit-shaped opening 17, and controls the air heater 15 based on the air temperature measured by a thermocouple 18. A temperature controller 19 is provided.
【００１７】この加熱装置においては、高圧空気が空気
加熱器１５によって加熱され、その加熱空気がスリット
状開口部１７を介して低融点ガラス６部に吹き出し、低
融点ガラス６が加熱される。この場合、温度制御器１９
により加熱空気温度を制御して、低融点ガラス６、ネッ
ク部２ａ、ステム３が均等に加熱されるように、加熱空
気の温度を徐々に上げ、低融点ガラス６の溶融温度に達
したら、所定時間加熱空気温度を一定に保ったのち、加
熱空気温度を徐々に下げる。In this heating device, the high-pressure air is heated by the air heater 15, and the heated air is blown through the slit-shaped opening 17 to the low-melting point glass 6 to heat the low-melting point glass 6. In this case, the temperature controller 19
The temperature of the heated air is controlled by, and the temperature of the heated air is gradually raised so that the low-melting glass 6, the neck portion 2a, and the stem 3 are uniformly heated. After keeping the heating air temperature constant for a period of time, gradually lower the heating air temperature.
【００１８】このような加熱装置においては、高周波誘
導で金属リングを加熱することにより低融点ガラスを加
熱する装置と比較して、高周波発生装置が不要であるか
ら、装置コストが安価であり、また金属リングをステム
に設置する手間が省けるので、溶着作業を容易に行なう
ことができ、さらに溶着後に金属リングが残らないか
ら、ネック部２ａ等にクラックが発生することが少な
い。In such a heating device, compared with a device that heats a low-melting glass by heating a metal ring by high-frequency induction, a high-frequency generator is not required, so the cost of the device is low, and the heating cost is low. Since the work of installing the metal ring on the stem can be omitted, the welding work can be easily performed, and since the metal ring does not remain after the welding, cracks are less likely to occur in the neck portion 2a and the like.
【００１９】図１０は低融点ガラスを介してファンネル
とステムとを溶着するための他の加熱装置を示す概略
図、図１１は図１０に示した加熱装置の一部を示す断面
図である。図に示すように、赤外線ランプ、赤外線ヒー
タ等の赤外線発生器２１、反射板２２を有する熱輻射発
生器２０に温度制御器２４が接続され、温度制御器２４
に熱電対１８が接続されている。FIG. 10 is a schematic view showing another heating device for welding the funnel and the stem through the low melting point glass, and FIG. 11 is a sectional view showing a part of the heating device shown in FIG. As shown in the figure, a temperature controller 24 is connected to an infrared generator 21, such as an infrared lamp or an infrared heater, and a thermal radiation generator 20 having a reflector 22.
A thermocouple 18 is connected to.
【００２０】この加熱装置においては、赤外線発生器２
１によって発生した赤外線が反射板２２によって反射さ
れて低融点ガラス６に照射され、低融点ガラス６が加熱
される。In this heating device, the infrared generator 2
The infrared rays generated by 1 are reflected by the reflection plate 22 and irradiated on the low melting point glass 6, and the low melting point glass 6 is heated.
【００２１】このような加熱装置においては、赤外線は
低融点ガラス６の内部で吸収されるから、加熱効率が良
好である。In such a heating device, infrared rays are absorbed inside the low melting point glass 6, so that the heating efficiency is good.
【００２２】[0022]
【発明の効果】以上説明したように、この発明に係る陰
極線管の製造方法においては、パネルとファンネルとの
取付と、ファンネルのネック部とステムとの取付とを同
時に行なうことができるから、製造工程が簡単になり、
製造コストが安価となる。このように、この発明の効果
は顕著である。As described above, in the method of manufacturing a cathode ray tube according to the present invention, the panel and the funnel can be mounted and the neck portion of the funnel and the stem can be mounted at the same time. Simplifies the process,
Manufacturing cost is low. As described above, the effect of the present invention is remarkable.
【図１】この発明に係る陰極線管の製造方法の説明図で
ある。FIG. 1 is an explanatory view of a method of manufacturing a cathode ray tube according to the present invention.
【図２】この発明に係る陰極線管の製造方法の説明図で
ある。FIG. 2 is an explanatory view of a method of manufacturing a cathode ray tube according to the present invention.
【図３】この発明に係る他の陰極線管の製造方法の説明
図である。FIG. 3 is an explanatory view of another method of manufacturing a cathode ray tube according to the present invention.
【図４】この発明に係る他の陰極線管の製造方法の説明
図である。FIG. 4 is an explanatory view of another method of manufacturing a cathode ray tube according to the present invention.
【図５】この発明に係る他の陰極線管の製造方法の説明
図である。FIG. 5 is an explanatory view of another method of manufacturing a cathode ray tube according to the present invention.
【図６】この発明に係る他の陰極線管の製造方法の説明
図である。FIG. 6 is an explanatory view of another method of manufacturing a cathode ray tube according to the present invention.
【図７】この発明に係る他の陰極線管の製造方法の説明
図である。FIG. 7 is an explanatory view of another method of manufacturing a cathode ray tube according to the present invention.
【図８】低融点ガラスを介してファンネルとステムとを
溶着するための加熱装置を示す概略図である。FIG. 8 is a schematic view showing a heating device for welding a funnel and a stem through a low melting point glass.
【図９】図８に示した加熱装置の一部を示す断面図であ
る。9 is a cross-sectional view showing a part of the heating device shown in FIG.
【図１０】低融点ガラスを介してファンネルとステムと
を溶着するための他の加熱装置を示す概略図である。FIG. 10 is a schematic view showing another heating device for welding the funnel and the stem through the low melting point glass.
【図１１】図１０に示した加熱装置の一部を示す断面図
である。11 is a cross-sectional view showing a part of the heating device shown in FIG.
１…パネル ２…ファンネル ２ａ…ネック部 ３…ステム ５…第１の低融点ガラス ６…第２の低融点ガラス ７…電子銃 ９…第２の低融点ガラス １１…第２の低融点ガラス DESCRIPTION OF SYMBOLS 1 ... Panel 2 ... Funnel 2a ... Neck part 3 ... Stem 5 ... 1st low melting point glass 6 ... 2nd low melting point glass 7 ... Electron gun 9 ... 2nd low melting point glass 11 ... 2nd low melting point glass
Claims (1)
１の低融点ガラスを塗布し、上記ファンネルのネック
部、電子銃を保持したステムの少なくとも一方に第２の
低融点ガラスを塗布し、上記第１、第２の低融点ガラス
を同時に加熱することを特徴とする陰極線管の製造方
法。1. A first low-melting glass is applied to at least one of a panel and a funnel, and a second low-melting glass is applied to at least one of a neck portion of the funnel and a stem holding an electron gun. 1. A method for manufacturing a cathode ray tube, which comprises simultaneously heating the first and second low melting point glasses.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24943692A JPH06103897A (en) | 1992-09-18 | 1992-09-18 | Manufacture of cathode-ray tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24943692A JPH06103897A (en) | 1992-09-18 | 1992-09-18 | Manufacture of cathode-ray tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH06103897A true JPH06103897A (en) | 1994-04-15 |
Family
ID=17192945
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24943692A Pending JPH06103897A (en) | 1992-09-18 | 1992-09-18 | Manufacture of cathode-ray tube |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06103897A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5777999A (en) * | 1996-01-26 | 1998-07-07 | Mitsubishi Denki Kabushiki Kaisha | Coded signal decoding circuit, and synchronous control method for the same, synchronous detecting method, and synchronization detecting circuit therefor |
| US5818155A (en) * | 1994-09-13 | 1998-10-06 | Hitachi, Ltd. | Cathode ray tube having a small-diameter neck and method of manufacture thereof |
-
1992
- 1992-09-18 JP JP24943692A patent/JPH06103897A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5818155A (en) * | 1994-09-13 | 1998-10-06 | Hitachi, Ltd. | Cathode ray tube having a small-diameter neck and method of manufacture thereof |
| US6246161B1 (en) | 1994-09-13 | 2001-06-12 | Hitachi, Ltd. | Cathode ray tube having a small-diameter neck and method of manufacture thereof |
| US5777999A (en) * | 1996-01-26 | 1998-07-07 | Mitsubishi Denki Kabushiki Kaisha | Coded signal decoding circuit, and synchronous control method for the same, synchronous detecting method, and synchronization detecting circuit therefor |
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