JPH01163944A - Deflection yoke device - Google Patents

Abstract

PURPOSE:To seek to improve deflection sensitivity upon securing miniaturization by winding a wire which is formed by laminating a magnetic substance layer and an insulator layer on a conductor, round a ferrite core so as to form a toroidal type deflecting coil. CONSTITUTION:A deflection yoke device uses a one which laminated a magnetic substance layer 23 and an insulator layer 24 on a conductor 22 as a wire 25 to be wound round a ferrite 21 of a toroidal type vertical deflecting coil 20. By this constitution, it acts equally as the inside diameter of the ferrite core 21 has become smaller diameter substantially. Hereby, even if a one almost in the same shape as conventional one is used, its horizontal deflection sensitivity and vertical deflection sensitivity can be improved without promoting oversization of the ferrite core 21.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to a deflection yoke device equipped with a toroidal deflection coil used, for example, in television receivers, disc play devices, and the like.

(Prior Art) In general, this type of deflection yoke device is an all-toroidal type in which toroidal horizontal and vertical deflection coils are combined and arranged, and a saddle type horizontal deflection coil and a toroidal vertical deflection coil are combined and arranged. The semi-toroidal shape is known, but at present, the semi-toroidal shape is the mainstream.

Figure 4 shows such a semi-toroidal deflection yoke device 1.
0, a pair of saddle-shaped horizontal deflection coils 11a
, 11b, an electric wire 12 is connected to the ferrite core 12a.
A toroidal vertical deflection coil 12 wound with a toroidal deflection coil 12 is arranged in combination with an insulating frame 13 interposed therebetween. And the horizontal deflection coil 11a of the deflection yoke device 10 combined in this way.

As shown in FIG. 5, the neck portion 14a of the cathode ray tube 14 is inserted into the tube 11b.

Incidentally, such a deflection yoke device 10 can improve its deflection sensitivity by reducing its average diameter. , neck shadow,
Limited by deflection characteristics such as deflection distortion and convergence. On the other hand, the horizontal deflection sensitivity is affected by the shape (radial direction and Z-axis direction) of the horizontal deflection coils 11a, 11b and the ferrite core 12, and the vertical deflection sensitivity is affected by the shape of the ferrite core 12. affected by. Therefore, conventionally, the horizontal deflection coil 118.11
An attempt has been made to improve the sensitivity by making the small diameter portion of the ferrite core 12 long, but there is a problem in that the size increases as the sensitivity improves.

(Problems to be Solved by the Invention) As described above, the conventional deflection yoke device has a problem in that increasing the sensitivity increases the size.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a deflection yoke device that can improve deflection sensitivity as much as possible while ensuring miniaturization.

[Structure of the Invention] (Means for Solving the Problems) The present invention provides a toroidal deflection coil formed by winding an electric wire in which a magnetic layer and an insulating layer are laminated around a ferrite core. This is a yoke device.

(Function) According to the above configuration, the inner diameter of the ferrite core is apparently reduced in diameter due to the magnetic layer of the wound electric wire,
The influence on the electron beam by the horizontal deflection magnetic field and the vertical deflection magnetic field increases.

Therefore, a substantial improvement in deflection sensitivity can be achieved while maintaining the same inner diameter of the ferrite as in the prior art.

(Example) Hereinafter, an example of the present invention will be described in detail with reference to the drawings.

FIG. 1 shows a toroidal vertical deflection coil 20 applied to a deflection yoke device according to an embodiment of the present invention. For example, as shown in FIG.
, 11b via an insulating frame 13. That is, in the vertical deflection coil 20 according to the present invention, as shown in FIG.
It is characterized in that an electric wire 25 is wound around the conductor 22, in which a magnetic layer 23 coated with a magnetic material and an insulator layer 24 coated with an insulating material are laminated in this order.

In the above configuration, the inner diameter of the ferrite core 21 becomes smaller in appearance as shown by the broken line in FIG. 3 due to the effect of the magnetic layer 23 of the wire wound therein. As a result, the electron beam 26 inside the ferrite core 21 is more strongly influenced by the horizontal deflection magnetic field and the vertical deflection magnetic field due to the smaller inner diameter, and its horizontal deflection sensitivity and vertical deflection sensitivity are improved.

In this manner, the deflection yoke device is configured to use a conductor 22 with a magnetic layer 23 and an insulating layer 24 laminated thereon as the electric wire 25 wound around the ferrite core 21 of the toroidal vertical deflection coil 20. Therefore, the same effect is achieved as if the inner diameter of the ferrite core 21 were substantially reduced.

According to this, the horizontal deflection sensitivity and the vertical deflection sensitivity can be improved without promoting the increase in the size of the ferrite core 21, even if a core having substantially the same shape as the conventional one is used. For example, when applied to a semi-toroidal deflection yoke device for a 32-inch 110° CRT, it was confirmed that the horizontal deflection sensitivity and vertical deflection sensitivity were improved by about 2%.

In addition, although the above embodiment has been explained in the case where it is applied to a semi-toroidal deflection yoke device, the present invention is not limited to this.
It can also be applied to an all-toroidal deflection yoke device, and similar effects can be expected. Therefore, it goes without saying that the present invention is not limited to the above embodiments, and that various modifications can be made without departing from the spirit of the invention.

[Effect of the Invention J As described in detail above, according to the present invention, it is possible to provide a deflection yoke device that is able to achieve as much improvement in deflection sensitivity as possible while ensuring miniaturization.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing a toroidal vertical deflection coil applied to a deflection yoke device according to an embodiment of the present invention, FIG. 2 is a diagram showing a cross section of the electric wire in FIG. 1, and FIG. FIGS. 4 and 5 are diagrams shown to explain the operation of the conventional deflection yoke device. 20... Toroidal vertical deflection coil, 21... Ferrite core, 22... Conductor, 23... Magnetic layer,
24... Insulating layer, 25... Electric wire. Applicant's agent Patent attorney Takehiko Suzue (a) (b) Figure 4 Figure 5-25:]

Claims (1)

[Claims] A deflection yoke device comprising a toroidal deflection coil, characterized in that the toroidal deflection coil is formed by winding an electric wire in which a conductor is laminated with a magnetic layer and an insulating layer around a ferrite core. .