JPH04101344U - Cathode structure for cathode ray tube - Google Patents
Cathode structure for cathode ray tubeInfo
- Publication number
- JPH04101344U JPH04101344U JP640691U JP640691U JPH04101344U JP H04101344 U JPH04101344 U JP H04101344U JP 640691 U JP640691 U JP 640691U JP 640691 U JP640691 U JP 640691U JP H04101344 U JPH04101344 U JP H04101344U
- Authority
- JP
- Japan
- Prior art keywords
- cathode
- sleeve
- cathode sleeve
- ray tube
- support
- 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
- 238000003466 welding Methods 0.000 claims description 7
- 239000000919 ceramic Substances 0.000 claims description 5
- 239000012212 insulator Substances 0.000 claims description 5
- 229910052784 alkaline earth metal Inorganic materials 0.000 claims 1
- 150000001342 alkaline earth metals Chemical class 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 3
- 239000000758 substrate Substances 0.000 description 5
- 229910000287 alkaline earth metal oxide Inorganic materials 0.000 description 3
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
Landscapes
- Electrodes For Cathode-Ray Tubes (AREA)
Abstract
(57)【要約】
【構成】中央に位置する陰極スリーブ4に対して両外側
に位置する陰極スリーブ4の表面積を10〜30%小さ
くする。
【効果】ヒータ5点火時に起るホワイトバランス崩れな
どの色調変化の生じない表示品位の高いインライン型陰
極構体を得ることが出来る。
(57) [Summary] [Structure] The surface area of the cathode sleeves 4 located on both outer sides is reduced by 10 to 30% compared to the cathode sleeve 4 located at the center. [Effect] It is possible to obtain an in-line cathode structure with high display quality that does not cause color change such as white balance collapse that occurs when the heater 5 is ignited.
Description
【0001】0001
本考案は陰極線管用陰極構体に関し、特にヒータ点火時にホワイトバランスが 安定する陰極線管用陰極構体に関する。 This invention relates to cathode assemblies for cathode ray tubes, especially when the white balance is adjusted when the heater is ignited. The present invention relates to a stable cathode assembly for a cathode ray tube.
【0002】0002
従来この種の陰極支持体にセラミックスなどの絶縁体を使用している陰極線管 用陰極構体(以下陰極構体と記す)は、図3に示す様に、陰極スリーブ支持体6 に溶接固定された陰極スリーブ4の開口端より挿入されたヒータ5により加熱さ れ、陰極スリーブ4に溶接固定された帽状の陰極基体2に含まれる還元剤と陰極 基体2頂部に塗布されたアルカリ土類酸化物3との反応が促進されて、700〜 800℃の動作温度において電子放出を行う。この時、カラー受像管の画面上に 取り出される陰極電流Ikは、第1グリッド電極に開けられた孔の孔径と陰極, 第1グリッド電極,第2グリッド電極の位置及び印加電圧によって決定される。 Conventionally, cathode ray tubes use insulators such as ceramics for this type of cathode support. As shown in FIG. 3, the cathode assembly (hereinafter referred to as cathode assembly) for The cathode sleeve 4 is heated by a heater 5 inserted through the open end of the cathode sleeve 4, which is welded and fixed to the The reducing agent and cathode contained in the cap-shaped cathode base 2 which is welded and fixed to the cathode sleeve 4 The reaction with the alkaline earth oxide 3 applied to the top of the substrate 2 is promoted, and the Electron emission occurs at an operating temperature of 800°C. At this time, on the color picture tube screen The cathode current Ik taken out is determined by the hole diameter of the hole made in the first grid electrode, the cathode, It is determined by the positions of the first grid electrode and the second grid electrode and the applied voltage.
【0003】0003
上述した従来の陰極構体は、3個の陰極ともに同一の陰極スリーブ支持体と陰 極スリーブを使用しているので、ヒータ点火時に中央の陰極基体温度は、両外側 の陰極の熱放射,熱伝導によって両外側の陰極基体温度より高温になっている。 一方、動作状態の陰極電流Ikを取り出す時の陰極,第1グリッド,第2グリッ ドの電圧設定は、ヒータを点火してから充分時間がたってから行い、各電極は、 熱的平衡を保っている。 In the conventional cathode structure described above, all three cathodes have the same cathode sleeve support and cathode structure. Since a pole sleeve is used, the temperature of the central cathode base when the heater is ignited is lower than that of the outside Due to heat radiation and conduction of the cathode, the temperature is higher than the temperature of both outer cathode substrates. On the other hand, when taking out the cathode current Ik in the operating state, the cathode, first grid, and second grid Set the voltage for each electrode after sufficient time has elapsed after igniting the heater. Maintains thermal equilibrium.
【0004】 しかし、ヒータ点火時には、陰極の温度差により、陰極と各電極との間隔が変 動する。従って、3個の陰極の温度差により、図4の従来の中央陰極のIk特性 Cに示す様に、ヒータ点火時に中央の陰極のみ陰極電流Ikの極大のピーク値を もったり、安定するまでに長時間を有してホワイトバランス崩れと呼ばれる色調 の変化を生じるなどの欠点があった。0004 However, when the heater is ignited, the distance between the cathode and each electrode changes due to the temperature difference between the cathodes. move. Therefore, due to the temperature difference between the three cathodes, the Ik characteristic of the conventional central cathode shown in FIG. As shown in C, when the heater is ignited, only the central cathode has the maximum peak value of the cathode current Ik. The color tone is dull or takes a long time to stabilize, which is called white balance imbalance. There were disadvantages such as changes in
【0005】 本考案の目的は、ヒータ点火時に起るホワイトバランス崩れと呼ばれる色調変 化の生じない表示品位の高い陰極線管が得られる陰極構体を提供することにある 。[0005] The purpose of this invention is to reduce the color tone change called white balance collapse that occurs when the heater is ignited. An object of the present invention is to provide a cathode structure that allows a cathode ray tube with high display quality to be obtained without causing distortion. .
【0006】[0006]
本考案は、 (1)陰極スリーブ支持体と、該陰極スリーブ支持体に保持された陰極スリーブ と、該陰極スリーブに固定された帽状の陰極基体と、該陰極基体の頂部に塗布さ れたアルカリ土類酸化物と、前記陰極スリーブに挿入されたヒータとを有する3 個の陰極がセラミックスを含む絶縁体にて直線上にインライン配列された陰極線 管用陰極構体において、中央に位置する前記陰極スリーブに対して両外側に位置 する前記陰極スリーブの表面積を10〜30%小さくしたことを特徴とする。 (2)陰極スリーブ支持体と、該陰極スリーブ支持体に保持された陰極スリーブ と、該陰極スリーブに固定された帽状の陰極基体と、該陰極基体の頂部に塗布さ れたアルカリ土類酸化物と、前記陰極スリーブに挿入されたヒータとを有する3 個の陰極がセラミックスを含む絶縁体にて直線上にインライン配列された陰極線 管用陰極構体において、両外側に位置する前記陰極に対して中央に位置する前記 陰極の前記陰極スリーブ支持体と前記陰極スリーブとの溶接固着面積を1.5〜 2倍に大きくしたことを特徴とする。 This idea is (1) A cathode sleeve support and a cathode sleeve held by the cathode sleeve support , a cap-shaped cathode base fixed to the cathode sleeve, and a cap-shaped cathode base coated on the top of the cathode base. and a heater inserted into the cathode sleeve. A cathode line in which cathodes are arranged in a straight line in an insulator containing ceramics. In the tube cathode structure, the cathode sleeve is located at the center, and the cathode sleeve is located at both outer sides. The surface area of the cathode sleeve is reduced by 10 to 30%. (2) A cathode sleeve support and a cathode sleeve held by the cathode sleeve support. , a cap-shaped cathode base fixed to the cathode sleeve, and a cap-shaped cathode base coated on the top of the cathode base. and a heater inserted into the cathode sleeve. A cathode line in which cathodes are arranged in a straight line in an insulator containing ceramics. In the tube cathode assembly, the cathode located at the center with respect to the cathode located on both outer sides. The welding fixation area between the cathode sleeve supporter and the cathode sleeve of the cathode is 1.5 to 1.5. It is characterized by being twice as large.
【0007】[0007]
次に、本考案の実施例について図面を参照して説明する。 Next, embodiments of the present invention will be described with reference to the drawings.
【0008】 図1は本考案の第1の実施例の縦断面図である。[0008] FIG. 1 is a longitudinal sectional view of a first embodiment of the present invention.
【0009】 第1の実施例は、図1に示す様に、陰極1は、直線上に並列配置され、陰極ス リーブ支持体6、および、陰極支持体8を介してガラス棒(図示せず)に支持固 定されている。各陰極1は、陰極スリーブ4と陰極スリーブ4に溶接固定された 陰極基体2と陰極基体2の頂部に塗布されたアルカリ土類酸化物3とからなり、 各陰極スリーブ4の中にヒータ5が挿入され、ヒータ5は、ヒータ支持体(図示 せず)に溶接固定されている。[0009] In the first embodiment, as shown in FIG. 1, the cathodes 1 are arranged in parallel on a straight line, and the cathode A support fixture is attached to a glass rod (not shown) via the leaf support 6 and the cathode support 8. has been established. Each cathode 1 was fixed to the cathode sleeve 4 by welding. It consists of a cathode substrate 2 and an alkaline earth oxide 3 coated on the top of the cathode substrate 2, A heater 5 is inserted into each cathode sleeve 4, and the heater 5 is attached to a heater support (not shown). (without welding).
【0010】 ここで、3個の陰極1のうち両外側の陰極1は陰極スリーブ4と陰極スリーブ 支持体6の溶接固着部分9を残し、陰極スリーブ4の表面の一部をカットし、表 面積で中央陰極1よりも10〜30%小さくなるようにする。0010 Here, among the three cathodes 1, both outer cathodes 1 are connected to the cathode sleeve 4 and the cathode sleeve. A part of the surface of the cathode sleeve 4 is cut, leaving the welded part 9 of the support 6, and the surface is removed. The area should be 10 to 30% smaller than that of the central cathode 1.
【0011】 図2は本考案の第2の実施例の縦断面図である。[0011] FIG. 2 is a longitudinal sectional view of a second embodiment of the present invention.
【0012】 第2の実施例は、図2に示す様に、中央の陰極1の陰極スリーブ4と陰極スリ ーブ支持体6の溶接固着面積を両外側の陰極1に対して1.5〜2倍大きくする 。例えば、両外側の陰極1が2点溶接であるのに対し中央の陰極は、3点溶接と し、溶接固着面積を1.5倍とする。0012 In the second embodiment, as shown in FIG. 2, the cathode sleeve 4 of the central cathode 1 and the cathode sleeve The welding fixation area of the tube support 6 is made 1.5 to 2 times larger than that of the cathodes 1 on both outer sides. . For example, while the outer cathodes 1 are 2-point welded, the central cathode is 3-point welded. Then, the welding fixation area is increased by 1.5 times.
【0013】[0013]
以上説明した様に本考案は、インライン型陰極構体において、中央に対して両 外側の陰極スリーブをカットし、また、両外側に対して中央の陰極スリーブと陰 極スリーブ支持体との溶接固着面積を大きくして3個の陰極の陰極基体の温度を 同じにすることで、ヒータ点火時の陰極基体と電極との間隔の変動量をほぼ同じ とすることが出来、ヒータ点火時に起こるホワイトバランスの崩れなど色調変化 の生じない表示品位の高いインライン型陰極構体を得ることが出来る効果がある 。 As explained above, the present invention provides an in-line cathode structure with both sides facing the center. Cut the outer cathode sleeve and also cut the center cathode sleeve and the cathode sleeve on both sides. The temperature of the cathode base of the three cathodes can be increased by increasing the welding area with the electrode sleeve support. By making them the same, the amount of variation in the distance between the cathode base and the electrode when igniting the heater can be kept approximately the same. This can prevent changes in color tone such as white balance disruption that occurs when the heater is ignited. This has the effect of providing an in-line cathode structure with high display quality that does not cause .
【図1】本考案の第1の実施例の縦断面図である。FIG. 1 is a longitudinal sectional view of a first embodiment of the present invention.
【図2】本考案の第2の実施例の縦断面図である。FIG. 2 is a longitudinal sectional view of a second embodiment of the present invention.
【図3】従来の陰極構体の一例の縦断面図である。FIG. 3 is a longitudinal cross-sectional view of an example of a conventional cathode assembly.
【図4】ヒータ点火からの時間に対する陰極電流Ikの
変化を示す特性図である。FIG. 4 is a characteristic diagram showing changes in cathode current Ik with respect to time from heater ignition.
1 陰極 2 陰極基体 3 アルカリ土類酸化物 4 陰極スリーブ 5 ヒータ 6 陰極スリーブ支持体 7 陰極スリーブ補助支持体 8 陰極支持体 9 溶接固着部分 1 cathode 2 Cathode substrate 3 Alkaline earth oxides 4 Cathode sleeve 5 Heater 6 Cathode sleeve support 7 Cathode sleeve auxiliary support 8 Cathode support 9 Welded fixed part
Claims (2)
支持体に保持された陰極スリーブと、該陰極スリーブに
固定された帽状の陰極基体と、該陰極基体の頂部に塗布
されたアルカリ土類酸化物と、前記陰極スリーブに挿入
されたヒータとを有する3個の陰極がセラミックスを含
む絶縁体にて直線上にインライン配列された陰極線管用
陰極構体において、中央に位置する前記陰極スリーブに
対して両外側に位置する前記陰極スリーブの表面積を1
0〜30%小さくしたことを特徴とする陰極線管用陰極
構体。1. A cathode sleeve support, a cathode sleeve held by the cathode sleeve support, a cap-shaped cathode base fixed to the cathode sleeve, and an alkaline earth metal coated on the top of the cathode base. In a cathode assembly for a cathode ray tube in which three cathodes each having an oxide and a heater inserted in the cathode sleeve are arranged in line in a straight line using an insulator including ceramics, with respect to the cathode sleeve located at the center. The surface area of the cathode sleeves located on both outer sides is 1
A cathode assembly for a cathode ray tube, characterized in that it is 0 to 30% smaller.
支持体に保持された陰極スリーブと、該陰極スリーブに
固定された帽状の陰極基体と、該陰極基体の頂部に塗布
されたアルカリ土類酸化物と、前記陰極スリーブに挿入
されたヒータとを有する3個の陰極がセラミックスを含
む絶縁体にて直線上にインライン配列された陰極線管用
陰極構体において、両外側に位置する前記陰極に対して
中央に位置する前記陰極の前記陰極スリーブ支持体と前
記陰極スリーブとの溶接固着面積を1.5〜2倍に大き
くしたことを特徴とする陰極線管用陰極構体。2. A cathode sleeve support, a cathode sleeve held by the cathode sleeve support, a cap-shaped cathode base fixed to the cathode sleeve, and an alkaline earth coated on the top of the cathode base. In a cathode assembly for a cathode ray tube in which three cathodes each having an oxide and a heater inserted in the cathode sleeve are arranged in a straight line in a straight line using an insulator including ceramics, with respect to the cathodes located on both outer sides. A cathode assembly for a cathode ray tube, characterized in that a welding area between the cathode sleeve support of the cathode located at the center and the cathode sleeve is increased by 1.5 to 2 times.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP640691U JPH04101344U (en) | 1991-02-18 | 1991-02-18 | Cathode structure for cathode ray tube |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP640691U JPH04101344U (en) | 1991-02-18 | 1991-02-18 | Cathode structure for cathode ray tube |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH04101344U true JPH04101344U (en) | 1992-09-01 |
Family
ID=31737632
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP640691U Pending JPH04101344U (en) | 1991-02-18 | 1991-02-18 | Cathode structure for cathode ray tube |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH04101344U (en) |
-
1991
- 1991-02-18 JP JP640691U patent/JPH04101344U/en active Pending
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