JP2594962B2 - Exhaust pipe sealing method for cathode ray tube - Google Patents
Exhaust pipe sealing method for cathode ray tubeInfo
- Publication number
- JP2594962B2 JP2594962B2 JP20627687A JP20627687A JP2594962B2 JP 2594962 B2 JP2594962 B2 JP 2594962B2 JP 20627687 A JP20627687 A JP 20627687A JP 20627687 A JP20627687 A JP 20627687A JP 2594962 B2 JP2594962 B2 JP 2594962B2
- Authority
- JP
- Japan
- Prior art keywords
- exhaust pipe
- cathode ray
- ray tube
- exhaust
- envelope
- 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.)
- Expired - Fee Related
Links
Landscapes
- Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、陰極線管の排気管封緘方法に関する。Description: TECHNICAL FIELD The present invention relates to a method for sealing an exhaust pipe of a cathode ray tube.
〔従来の技術〕 陰極線管は外囲器内に螢光面、電子銃、さらにはカラ
ー陰極線管では色選別電極等を有するが、これら陰極線
管においては外囲器内の真空に排気するにはステムに設
けられた排気管を介して行うのが一般的である。そして
この排気工程では第２図に示すようにパネル部１、フア
ンネル部２、及びネツク部３と、このネツク部３に封着
されかつ排気管４を有するステム５をそれぞれ封着した
被排気構体６を循環処理炉内に搬入し、加熱、徐冷等を
行い外囲器内を排気したのち、排気管４の途中を封緘す
ることにより陰極線管を形成している。[Prior Art] A cathode ray tube has a fluorescent screen, an electron gun, and a color selection electrode in a color cathode ray tube in an envelope. In these cathode ray tubes, it is necessary to evacuate the inside of the envelope to a vacuum. This is generally performed via an exhaust pipe provided in the stem. In this exhausting step, as shown in FIG. 2, an exhausted structure in which a panel section 1, a funnel section 2, and a network section 3 and a stem 5 sealed to the network section 3 and having an exhaust pipe 4 are respectively sealed. The cathode ray tube is formed by carrying the material 6 into the circulation processing furnace, heating, gradually cooling, etc., evacuating the envelope, and then sealing the middle of the exhaust pipe 4.
この排気、封緘等に用いる循環処理炉としては、例え
ば、特開昭61−135023号公報に示すようなものが知られ
ている。As a circulation processing furnace used for the evacuation, sealing, and the like, for example, the one shown in JP-A-61-135023 is known.
上記従来技術は、排気管の封緘部の形状を耐爆縮性の
優れた構造とすることに重点がおかれ、被排気構体の温
度のむらに起因する爆縮の危険については配慮がなされ
ておらず、爆縮発生の問題があつた。In the above prior art, emphasis is placed on making the shape of the sealing portion of the exhaust pipe excellent in implosion resistance, and attention is paid to the risk of implosion due to uneven temperature of the exhausted structure. However, there was a problem of implosion.
本発明の目的は、排気管の封緘部の形状を耐爆縮性の
優れた構造とすると共に被排気構体の温度むらに起因す
る爆縮の危険性を低下させることにある。An object of the present invention is to make the shape of the sealing portion of the exhaust pipe excellent in implosion resistance and to reduce the risk of implosion caused by uneven temperature of the exhausted structure.
上記目的は排気管の封緘に際し排気管を除く外囲器に
送風し、外囲器の温度むらを低減しながら排気管封緘部
分には送風しないようにすることにより達成される。The above object is achieved by blowing air to the envelope except for the exhaust pipe when sealing the exhaust pipe, and reducing the temperature unevenness of the envelope so as not to blow air to the sealed portion of the exhaust pipe.
被排気構体に送風することにより外囲器の温度むらを
低減でき、かつ前記送風が排気管封緘部に及ばないよう
にすることにより封緘部の形状を耐爆縮性の高いものと
することができる。By sending air to the exhausted structure, it is possible to reduce the temperature unevenness of the envelope, and to make the shape of the sealing portion highly implosion-resistant by preventing the air from reaching the exhaust pipe sealing portion. it can.
以下、本発明の一実施例を第１図により説明する。第
１図は、本発明に用いる排気炉の陰極線管の排気管封緘
ポジシヨンの断面図である。封緘ポジシヨンに来た被排
気構体６は、排気管４を挿通してステムのピン（図示せ
ず）と係合する電熱釜８の加熱により陰極線管の排気管
４の一部７を封緘する。この時、排気装置９は稼働して
いる。また、排気炉10では、吸入口11より外気をフアン
12により送風し、第１のパーフオレートプレート13及び
第２のパーフオレートプレート14を通過することによ
り、炉内の風15は層流となる。層流となつた風15を被排
気構体６に吹きつけ排気口16を通過して外部に放出す
る。すなわち排気管４の封緘ポジシヨンで電熱釜８を除
く被排気構体６のパネル部１、フアンネル部２等に風を
吹きつけ温度を低下させながら排気管４の封緘を行う。
この際、前述のように電熱釜８は冷却しないように風15
が排気管４側へまわり込まないように排気口16まら排出
する。Hereinafter, an embodiment of the present invention will be described with reference to FIG. FIG. 1 is a sectional view of an exhaust pipe sealing position of a cathode ray tube of an exhaust furnace used in the present invention. The exhausted structure 6 that has reached the sealing position seals a part 7 of the cathode ray tube exhaust pipe 4 by heating the electric heating pot 8 which is inserted through the exhaust pipe 4 and engages a pin (not shown) of the stem. At this time, the exhaust device 9 is operating. In the exhaust furnace 10, the outside air is fanned through the inlet 11.
When the air is blown by 12 and passes through the first perforate plate 13 and the second perforate plate 14, the air 15 in the furnace becomes laminar. The laminar wind 15 is blown against the exhausted structure 6 and is discharged to the outside through the exhaust port 16. That is, the exhaust pipe 4 is sealed while the temperature is lowered by blowing air to the panel section 1, the funnel section 2 and the like of the exhausted structure 6 excluding the electric heating pot 8 with the sealing position of the exhaust pipe 4.
At this time, the wind 15
Is exhausted to the exhaust port 16 so as not to flow toward the exhaust pipe 4.
本実施例によれば、被排気孔構体の排気管を封緘しな
がら、パネル部、フアンネル部等を冷却して、外囲器の
温度むらを防止でき、排気炉中の爆縮発生率も低減する
ことができる。According to the present embodiment, the panel portion, the funnel portion, and the like can be cooled while sealing the exhaust pipe of the exhaust hole structure, thereby preventing temperature variations in the envelope and reducing the rate of occurrence of implosion in the exhaust furnace. can do.
尚、上記実施例で用いた排気炉では排気口フアンを設
置して強制的に、炉内の空気を排気してもよい。In the exhaust furnace used in the above embodiment, an exhaust port fan may be provided to forcibly exhaust air from the furnace.
本発明によれば、被排気構体の排気管を封緘しなが
ら、外囲器のパネル部、フアンネル部等を冷却するた
め、外囲器の温度むらを低減でき、従つて爆縮の発生を
おさえると共に、排気管の封緘部の形状を耐爆縮性の高
いものとすることができる。ADVANTAGE OF THE INVENTION According to this invention, since the panel part of an enclosure, a funnel part, etc. are cooled, sealing the exhaust pipe of a to-be-evacuated structure, the temperature unevenness of an enclosure can be reduced and the implosion can be prevented. At the same time, the shape of the sealing portion of the exhaust pipe can be made high in implosion resistance.
第１図は本発明に用いる排気炉の一例を示す断面図、第
２図は被排気構体の一例の平面図である。 １……パネル部、２……フアンネル部、３……ネツク
部、４……排気管、５……ステム、６……被排気構体、
８……電熱炉、９……排気装置、10……排気炉、11……
吸入口、12……フアン、13,14……パーフオレートプレ
ート、15……風、16……排気口。FIG. 1 is a sectional view showing an example of an exhaust furnace used in the present invention, and FIG. 2 is a plan view of an example of an exhausted structure. DESCRIPTION OF SYMBOLS 1 ... Panel part, 2 ... Funnel part, 3 ... Network part, 4 ... Exhaust pipe, 5 ... Stem, 6 ... Exhausted structure,
8 ... electric heating furnace, 9 ... exhaust system, 10 ... exhaust furnace, 11 ...
Inlet, 12… Juan, 13, 14… Perforate plate, 15… Wind, 16… Exhaust.
Claims (1)
ネル部と、一端をこのパネル部に封着したファンネル部
及びこのファンネル部の他端にその一端を封着したネッ
ク部とからなる外囲器と、該外囲器の前記ネック部の他
端に封着したステムに設けられた排気管とを有し、前記
外囲器内を排気したのち、前記排気管を封緘する陰極線
管の排気管封緘方法において、前記外囲器に外気を送風
して前記パネル部、ファンネル部の温度を低下させなが
ら前記排気管を封緘することを特徴とする陰極線管の排
気管封緘方法。1. A shallow dish-shaped panel portion forming a fluorescent surface on the inner surface of a closed end, a funnel portion having one end sealed to the panel portion, and a neck portion having one end sealed to the other end of the funnel portion. And an exhaust pipe provided on a stem sealed to the other end of the neck portion of the envelope, and after exhausting the inside of the envelope, sealing the exhaust pipe A method of sealing an exhaust pipe of a cathode ray tube, wherein the exhaust pipe is sealed while lowering the temperature of the panel portion and the funnel portion by blowing outside air to the envelope. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20627687A JP2594962B2 (en) | 1987-08-21 | 1987-08-21 | Exhaust pipe sealing method for cathode ray tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20627687A JP2594962B2 (en) | 1987-08-21 | 1987-08-21 | Exhaust pipe sealing method for cathode ray tube |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6450342A JPS6450342A (en) | 1989-02-27 |
| JP2594962B2 true JP2594962B2 (en) | 1997-03-26 |
Family
ID=16520640
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20627687A Expired - Fee Related JP2594962B2 (en) | 1987-08-21 | 1987-08-21 | Exhaust pipe sealing method for cathode ray tube |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2594962B2 (en) |
-
1987
- 1987-08-21 JP JP20627687A patent/JP2594962B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6450342A (en) | 1989-02-27 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |