JPS6212622B2 - - Google Patents
Info
- Publication number
- JPS6212622B2 JPS6212622B2 JP9524878A JP9524878A JPS6212622B2 JP S6212622 B2 JPS6212622 B2 JP S6212622B2 JP 9524878 A JP9524878 A JP 9524878A JP 9524878 A JP9524878 A JP 9524878A JP S6212622 B2 JPS6212622 B2 JP S6212622B2
- Authority
- JP
- Japan
- Prior art keywords
- electrode
- anode
- high voltage
- voltage
- withstand voltage
- 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
Links
- 238000011282 treatment Methods 0.000 description 6
- 239000011521 glass Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
Description
【発明の詳細な説明】
この発明は、陰極線管の特性を損うことがな
く、有効な耐電圧処理を行なうことが可能な耐電
圧処理装置の改善に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a withstand voltage processing apparatus that can perform effective withstand voltage processing without impairing the characteristics of a cathode ray tube.
以下、カラーブラウン管の耐電圧処理装置の場
合について、この発明の内容を説明する。 Hereinafter, the content of the present invention will be explained in the case of a withstand voltage processing device for a color cathode ray tube.
第1図は従来のカラーブラウン管における電極
構造の概要を示すもので、図において、1はガラ
スバルブ、2は高電圧が供給されるアノードボタ
ン、3はガラスバルブ1の内壁に形成された導電
膜、4はばねを介して導電膜3に接続された陽極
で、アノードボタン2から導電膜3およびばねを
介して高電圧が供給される。また、5は陽極4に
対向して配置された第3電極、6は第2電極、7
は第1電極、8はカソード電極、9はヒータ電極
で、これらの電極はそれぞれリード線10を介し
てガラスバルブ1のネツク後方より導出されてい
る。このようなカラーブラウン管においては陽極
4に10数キロボルト〜数10キロボルトの高電圧を
印加して使用されており、かかる高電圧に十分耐
えられるようにするため、予じめ使用時の数倍の
高い電圧を印加して各電極の耐電圧処理を行なつ
ている。その耐電圧処理は、陽極4と次段電極5
との間の耐電圧処理と、第3電極5と第2電極
6、第1電極7との間の耐電圧処理とに分けて考
えることができる。従来この2種類の耐電圧処理
は、陽極4に前述の高電圧を印加することで行な
つている。つまり、陽極4に高い電圧を印加する
ことで、第3電極5との間でスパークが発生し、
このため第3電極5の電位が上昇し、この上昇し
た第3電極5電位で第2電極6、第1電極7との
間の耐電圧処理を行なうという方法である。この
とき、第3電極5の電位を高めるために、外部に
抵抗素子を接続している。このような従来方法の
特徴は、陽極4に高電圧を印加するための1種類
の電源を持つことで、2種類の耐電圧処理を同時
に行い得た。ところが、第3電極5の電位は外部
の抵抗素子と、第3電極5と陽極4との間で発生
するスパーク電流に依るため、電位が一定しない
欠点がある。すなわち、高すぎる電圧が、第3電
極5に誘起されると、第3電極5からカソード電
極8又はヒータ電極9にまでスパークを誘発し、
ヒータ電極9又はカソード電極8に損傷を与える
ことになつていた。 Figure 1 shows an outline of the electrode structure in a conventional color cathode ray tube. In the figure, 1 is a glass bulb, 2 is an anode button to which high voltage is supplied, and 3 is a conductive film formed on the inner wall of the glass bulb 1. , 4 is an anode connected to the conductive film 3 via a spring, and a high voltage is supplied from the anode button 2 via the conductive film 3 and the spring. Further, 5 is a third electrode arranged opposite to the anode 4, 6 is a second electrode, and 7 is a third electrode arranged opposite to the anode 4.
8 is a first electrode, 8 is a cathode electrode, and 9 is a heater electrode, and these electrodes are led out from the back of the glass bulb 1 via lead wires 10, respectively. In such color cathode ray tubes, a high voltage of several tens of kilovolts to several tens of kilovolts is applied to the anode 4. A high voltage is applied to each electrode to withstand voltage. The withstand voltage treatment consists of the anode 4 and the next stage electrode 5.
The withstand voltage treatment between the third electrode 5, the second electrode 6, and the first electrode 7 can be considered separately. Conventionally, these two types of withstand voltage treatments are performed by applying the above-mentioned high voltage to the anode 4. In other words, by applying a high voltage to the anode 4, a spark is generated between it and the third electrode 5,
For this reason, the potential of the third electrode 5 increases, and withstand voltage treatment between the second electrode 6 and the first electrode 7 is performed using this increased potential of the third electrode 5. At this time, a resistance element is connected to the outside in order to increase the potential of the third electrode 5. A feature of such a conventional method is that it has one type of power source for applying a high voltage to the anode 4, so that two types of withstand voltage treatments can be performed simultaneously. However, since the potential of the third electrode 5 depends on an external resistance element and a spark current generated between the third electrode 5 and the anode 4, there is a drawback that the potential is not constant. That is, when too high a voltage is induced in the third electrode 5, sparks are induced from the third electrode 5 to the cathode electrode 8 or the heater electrode 9,
This would have caused damage to the heater electrode 9 or the cathode electrode 8.
この発明は第3電極に誘起される電位を一定化
することによつて、ヒータ部又はカソード部の損
傷を防止し、有効な耐電圧処理を行なわせるよう
にしたものである。 This invention prevents damage to the heater section or the cathode section and performs effective withstand voltage treatment by making the potential induced in the third electrode constant.
以下、この発明を一実施例である第2図につい
て説明する。第2図において、11は第3電極5
とアース間に接続された抵抗素子、12は抵抗素
子11に並列に接続された放電ギヤツプ、13は
陽極4に高電圧を供給する高圧発生源である。ま
た、他の電極は直接アースされている。なお、抵
抗素子11は、第3電極5と陽極4とのスパーク
が発生した時に、第3電極5に高電圧を誘起させ
るためのもので、普通数キロオームの抵抗で十分
である。また、放電ギヤツプ12は、この抵抗素
子11によつて誘起される電圧が、高すぎる時に
放電を行い、電圧を一定化するもので、10キロボ
ルト程度の放電開始電圧を持つものを使用する。
このように構成することによつて第3電極5に高
すぎる電圧が発生しても放電ギヤツプ12により
スパークして一定した電圧を第3電極5に誘起す
ることができ、ヒータ電極9又はカソード電極8
の損傷を防止することができる。 Hereinafter, this invention will be explained with reference to FIG. 2, which is one embodiment. In FIG. 2, 11 is the third electrode 5
12 is a discharge gap connected in parallel to the resistance element 11, and 13 is a high voltage source that supplies high voltage to the anode 4. Further, the other electrodes are directly grounded. Note that the resistance element 11 is for inducing a high voltage in the third electrode 5 when a spark occurs between the third electrode 5 and the anode 4, and a resistance of several kilohms is usually sufficient. The discharge gap 12 discharges when the voltage induced by the resistive element 11 is too high to keep the voltage constant, and has a discharge starting voltage of about 10 kilovolts.
With this configuration, even if an excessively high voltage is generated at the third electrode 5, a spark can be caused by the discharge gap 12 to induce a constant voltage at the third electrode 5, and the heater electrode 9 or cathode electrode 8
damage can be prevented.
以上説明したようにこの発明によれば簡易にし
て、所期の目的を達成することができ、この発明
の実用価値は大である。 As explained above, according to the present invention, the intended purpose can be achieved with simplicity, and the practical value of the present invention is great.
第1図は従来のカラーブラウン管における電極
構造を示す概要図、第2図はこの発明の一実施例
である耐電圧処理装置の構成を示す概要図であ
る。
図中、2はアノードボタン、4は陽極、5は第
3電極、6は第2電極、7は第1電極、8はカソ
ード電極、9はヒータ電極、10はリード線、1
1は抵抗素子、12は放電ギヤツプ、13は高圧
発生源である。なお、図中、同一符号は同一ある
いは相当する部分を示すものとする。
FIG. 1 is a schematic diagram showing the electrode structure of a conventional color cathode ray tube, and FIG. 2 is a schematic diagram showing the configuration of a withstand voltage processing device according to an embodiment of the present invention. In the figure, 2 is an anode button, 4 is an anode, 5 is a third electrode, 6 is a second electrode, 7 is a first electrode, 8 is a cathode electrode, 9 is a heater electrode, 10 is a lead wire, 1
1 is a resistance element, 12 is a discharge gap, and 13 is a high voltage source. In addition, in the figures, the same reference numerals indicate the same or corresponding parts.
Claims (1)
素子と放電ギヤツプとの並列回路を接続し、上記
陰極線管の陽極に高電圧を印加するように構成し
たことを特徴とする陰極線管の耐電圧処理装置。1. Withstand voltage of a cathode ray tube, characterized in that a parallel circuit of a resistance element and a discharge gap is connected to one electrode or a plurality of electrodes of the cathode ray tube, and a high voltage is applied to the anode of the cathode ray tube. Processing equipment.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9524878A JPS5521874A (en) | 1978-08-03 | 1978-08-03 | Withstand voltage treatment device of cathode-ray tube |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9524878A JPS5521874A (en) | 1978-08-03 | 1978-08-03 | Withstand voltage treatment device of cathode-ray tube |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5521874A JPS5521874A (en) | 1980-02-16 |
JPS6212622B2 true JPS6212622B2 (en) | 1987-03-19 |
Family
ID=14132444
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9524878A Granted JPS5521874A (en) | 1978-08-03 | 1978-08-03 | Withstand voltage treatment device of cathode-ray tube |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5521874A (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6070632A (en) * | 1983-09-28 | 1985-04-22 | Toshiba Corp | Withstand voltage processing method of cathode-ray tube |
JPS60121647A (en) * | 1983-12-05 | 1985-06-29 | Toshiba Corp | Aging device |
-
1978
- 1978-08-03 JP JP9524878A patent/JPS5521874A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS5521874A (en) | 1980-02-16 |
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