JPS6264084U

JPS6264084U -

Info

Publication number: JPS6264084U
Application number: JP1985155609U
Authority: JP
Priority date: 1985-10-09
Filing date: 1985-10-09
Publication date: 1987-04-21

Description

【図面の簡単な説明】[Brief explanation of drawings]

第１図は、この考案の一実施例の一部破断側面
図、第２図、第３図は、この実施例の磁束分布を
示す要部断面図、第４図は従来のカラー陰極線管
の磁束分布を示す要部断面図、第５図は従来のカ
ラー陰極線管の一部破断側面図、第６図は電子ビ
ームに対する地磁気の影響を説明するための蛍光
面の正面図、第７図はストライプ状蛍光面の構成
を示す一部拡大図、第８図は従来のカラー陰性線
管の磁束分布を示す要部断面図、第９図は従来の
カラー陰性線管の隙間長さと、蛍光面上の電子ビ
ーム射突点の移動量との関係を示す図である。１……真空外囲器、１ａ……パネル部、１ｂ…
…フアンネル部、７……外部磁気シールド、７ａ
……磁気シールド延在部。なお、図中同一符号は
それぞれ同一または相当部分を示す。 Figure 1 is a partially cutaway side view of an embodiment of this invention, Figures 2 and 3 are sectional views of essential parts showing the magnetic flux distribution of this embodiment, and Figure 4 is a diagram of a conventional color cathode ray tube. Fig. 5 is a partially cutaway side view of a conventional color cathode ray tube, Fig. 6 is a front view of a fluorescent screen to explain the influence of earth's magnetism on electron beams, and Fig. 7 is a cross-sectional view of main parts showing magnetic flux distribution. A partially enlarged view showing the configuration of a striped phosphor screen, Figure 8 is a sectional view of the main part showing the magnetic flux distribution of a conventional color negative ray tube, and Figure 9 shows the gap length of a conventional color negative ray tube and the phosphor screen. FIG. 6 is a diagram showing the relationship between the movement amount of the upper electron beam projection point and the amount of movement. 1... Vacuum envelope, 1a... Panel part, 1b...
...Funnel part, 7...External magnetic shield, 7a
...Magnetic shield extension. Note that the same reference numerals in the figures indicate the same or corresponding parts.

Claims

【実用新案登録請求の範囲】[Scope of utility model registration request]

フアンネル部と、上記フアンネル部に接合され
て、その内面に蛍光面が形成されたパネル部とか
ら成る真空外囲器、及びこの真空外囲器内に上記
蛍光面と対向して配設されたアパーチヤーマスク
を備え、上記アパーチヤーマスクと蛍光面との間
隔が２５mm以上となるカラー陰極線管において、
上記フアンネル部から、これにつづく上記パネル
部側面の前方までを一体にとり囲む形状とした外
部磁気シールドを設けたことを特徴とするカラー
陰極線管。 a vacuum envelope consisting of a funnel part and a panel part joined to the funnel part and having a phosphor screen formed on its inner surface, and disposed within the vacuum envelope to face the phosphor screen. In a color cathode ray tube including an aperture mask, the distance between the aperture mask and the phosphor screen is 25 mm or more,
A color cathode ray tube characterized in that an external magnetic shield is provided that integrally surrounds from the funnel section to the front side of the side surface of the panel section.