JPH0170250U

JPH0170250U -

Info

Publication number: JPH0170250U
Application number: JP1987165258U
Authority: JP
Priority date: 1987-10-30
Filing date: 1987-10-30
Publication date: 1989-05-10

Description

[Brief explanation of the drawing]

第１図ないし第４図はこの考案の実施例の説明
図で、第１図および第２図はそれぞれその一実施
例であるインライン形カラー受像管用電子銃の陰
極部の構造を示す図、第３図はそのヒータ通電時
間と陰極電流との関係を示す図、第４図は他の実
施例の陰極部の構造を示す図、第５図ＡおよびＢ
図はそれぞれ従来のカラー受像管用電子銃の陰極
部の構造を示す平面図およびそのＢ―Ｂ線断面図
、第６図はその３個の陰極の配列を示す図、第７
図はそのヒータ通電時間と陰極電流との関係を示
す図である。８……絶縁支持体、９……ヒータ、１０……第
１グリツド、２０ａ……中央に位置する陰極、２
０ｂ，２０ｃ……両側に位置する陰極、２１……
陰極スリーブ、２２……外筒、２３……陰極素子
、２４……陰極アイレツト、２５……アイレツト
サポータ、２６……点（陰極アイレツトとアイレ
ツトサポータとの溶接位置）、２７……点（外筒
と陰極アイレツトとの溶接位置）。 1 to 4 are explanatory diagrams of an embodiment of this invention, and FIGS. 1 and 2 are diagrams showing the structure of the cathode part of an in-line color picture tube electron gun, which is one embodiment, respectively. Figure 3 is a diagram showing the relationship between the heater energization time and cathode current, Figure 4 is a diagram showing the structure of the cathode part of another embodiment, and Figures 5A and B.
The figures are a plan view and a sectional view taken along the line B--B of the structure of the cathode section of a conventional color picture tube electron gun, respectively.
The figure is a diagram showing the relationship between the heater energization time and the cathode current. 8... Insulating support, 9... Heater, 10... First grid, 20a... Cathode located in the center, 2
0b, 20c... cathodes located on both sides, 21...
Cathode sleeve, 22... outer cylinder, 23... cathode element, 24... cathode eyelet, 25... eyelet supporter, 26... point (welding position between cathode eyelet and eyelet supporter), 27... point ( welding position between the outer cylinder and cathode eyelet).

Claims

[Claims for Utility Model Registration] It has three cathodes arranged in a row and a plurality of electrodes that control the generation of electron beams from the cathodes and focus and accelerate the generated electron beams, and each of the three cathodes It consists of a cathode element inserted into the heater, a cathode eyelet coaxially welded to the outer surface of this cathode element, and an eyelet supporter welded to the outer surface of this cathode eyelet. In an electron gun in which each eyelet supporter is held and fixed to an insulating support together with the plurality of electrodes, the welding position between the cathode element and the cathode eyelet of the central cathode among the three cathodes arranged in a row, and At least one of the welding positions between the cathode eyelet and the eyelet supporter,
An electron gun characterized in that the generation of the electron beam is biased toward the electrode that controls the generation of the electron beam, rather than the corresponding welding positions of the cathodes located on both sides.