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Color picture tube apparatus

A technology for color picture tubes and tube shafts, which is applied in the direction of image/graphic display tubes, electrode devices and related components, screen tubes, etc., and can solve the problems that the gap magnetic core cannot be fully satisfied and the deflection power can be reduced.

Inactive Publication Date: 2005-03-09
MATSUSHITA TOSHIBA PICTURE DISPLAY CO LTD
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  • Summary
  • Abstract
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AI Technical Summary

Problems solved by technology

[0005] However, Figure 8 The gap cores in the field cannot fully meet the requirements of further reducing the deflection power in recent years

Method used

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  • Color picture tube apparatus
  • Color picture tube apparatus
  • Color picture tube apparatus

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Embodiment Construction

[0020] In the color picture tube of the present invention, the length of at least the horizontal or vertical axial projections in the tube axis direction is greater than the length of the diagonal projections in the tube axis direction. Therefore, the deflection power can be reduced while securing the degree of freedom in the winding arrangement of the horizontal deflection coil and the vertical deflection coil. In this way, the windings of the horizontal deflection coil and the vertical deflection coil can be arranged so as to provide a desired distribution of the deflection magnetic field, so that a high-quality, energy-efficient color picture tube can be provided.

[0021] Afterwards, the present invention will be explained by way of specific numerical examples. However, the following numerical examples are for illustration only, and the present invention is not limited thereto.

[0022] figure 1 It is an appearance view showing a color picture tube device applying the p...

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Abstract

A ferrite core (9) constituting a deflection yoke includes a plurality of convex portions (10) in a ridge shape on an inner surface thereof. Among the plurality of convex portions (10), assuming that the convex portions (10) in a range excluding a range of -20 DEG to +20 DEG with respect to a horizontal axis and a range of -20 DEG to +20 DEG with respect to a vertical axis are diagonal convex portions, the lengths in a tube axis direction of at least horizontal axial convex portions (P1), (P11) on a horizontal axis or vertical axial convex portions (P6), (P 16) on a vertical axis are larger than those of the diagonal convex portions. Because of this, a color picture tube apparatus with a deflection power reduced can be provided while the degree of freedom in a winding arrangement of deflection coils is secured.

Description

technical field [0001] The present invention relates to a color picture tube arrangement for use in television sets, computer monitors or the like. Background technique [0002] In order to reduce the deflection power and suppress the heat generated by the deflection yoke, JP61(1986)-56757U discloses a so-called gap magnetic core in which a plurality of shafts facing the picture tube are provided on the inner surface of the ferrite core constituting the deflection yoke Protruding raised part. Figure 7 shows a cross-sectional view of a deflection yoke with a gap core taken along a plane perpendicular to the kinescope axis at a position close to the electron gun. Reference numeral 9 denotes a ferrite core, and 10 denotes a plurality of convex portions provided on the inner surface of the ferrite core 9 . Winding wires are inserted into grooves between the convex portions 10 adjacent to each other in the circumferential direction, whereby the vertical deflection coil 7 and th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01J29/76
CPCH01J29/76H01J2229/7031H01J2229/7032
Inventor 田上悦司
Owner MATSUSHITA TOSHIBA PICTURE DISPLAY CO LTD
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