JPS63152139U

JPS63152139U -

Info

Publication number: JPS63152139U
Application number: JP1987044261U
Authority: JP
Priority date: 1987-03-27
Filing date: 1987-03-27
Publication date: 1988-10-06

Description

[Brief explanation of the drawing]

第１図は本考案偏向ヨーク装置の一実施例にお
ける側面図、第２図は第１図の―線断面図、
第３図は本考案偏向ヨーク装置の一実施例におけ
る要部概略上面図、第４図は同じく水平偏向コイ
ルとキヤンセルコイルとの接続状態を示す回路図
、第５図は同じく水平偏向コイルとキヤンセルコ
イルによつて発生する磁界の状態を示す偏向ヨー
クの頭部側から見た説明図である。１……コア、２，３……水平偏向コイル、４，
５……垂直偏向コイル、６……コイルボビン、７
……偏向ヨーク、８，９……不要輻射対策手段、
１０，１１……キヤンセルコイル。 FIG. 1 is a side view of an embodiment of the deflection yoke device of the present invention, FIG. 2 is a sectional view taken along the line -- in FIG.
Fig. 3 is a schematic top view of the main parts of an embodiment of the deflection yoke device of the present invention, Fig. 4 is a circuit diagram showing the connection state between the horizontal deflection coil and the cancel coil, and Fig. 5 is the same as the horizontal deflection coil and the cancel coil. FIG. 3 is an explanatory diagram of the deflection yoke viewed from the head side, showing the state of the magnetic field generated by the coil. 1...Core, 2, 3...Horizontal deflection coil, 4,
5... Vertical deflection coil, 6... Coil bobbin, 7
... Deflection yoke, 8, 9 ... Unnecessary radiation countermeasures,
10, 11... Cancel coil.

Claims

[Scope of utility model registration request]

a core, a pair of saddle-shaped horizontal deflection coils and a pair of toroidal or saddle-shaped vertical deflection coils wound along the core, and arranged on the inner surface of the core between the horizontal deflection coil and the vertical deflection coil. A deflection yoke is constituted by a coil bobbin that maintains the insulation of the coil and defines the position of both coils,
Outside the deflection yoke, an unnecessary radiation countermeasure means consisting of a cancel coil wound at least in a loop is attached and fixed, the center of which is located on or near the Y axis of the deflection yoke, and the cancel coil is provided with the above-mentioned A horizontal deflection current supplied to the horizontal deflection coil or a current synchronized with the horizontal deflection current is passed to generate a magnetic field opposite to unnecessary radiation leaking to the outside from the deflection yoke among the horizontal deflection magnetic field generated by the horizontal deflection coil. Also, a deflection yoke device characterized in that the cancel coil is constructed using a wire or a plurality of thin wires to prevent heat generation due to high frequency current.