KR930000784Y1 - Deflection yoke for missconvergence and nonnecessary duplication prevention - Google Patents

Abstract

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Description

Deflection yoke to prevent misconvergence and unnecessary radiation

1 is a side view of the deflection yoke for preventing misconvergence and unnecessary radiation according to the present invention.

Figure 2 (a) is a perspective view of a bobbin mounted to the deflection yoke for preventing misconvergence and unnecessary radiation according to the present invention.

Figure 2 (b) is a side view of the permanent magnet mounted to the bobbin of the deflection yoke for preventing misconversion and unnecessary radiation according to the present invention.

3 (a) and 3 (b) are circuit diagrams of a deflection yoke for preventing misconvergence and unnecessary radiation according to the present invention.

* Explanation of symbols for main parts of the drawings

1: deflection yoke 2: coil separator

3: ferrite core 4: upper vertical deflection coil

4 ': lower vertical deflection coil 5: screen portion

6ab: 1st, 3rd drum cores 7a, 7b: 2nd, 4th drum cores

18a, 18b: First and second bobbins 10a, 10b: Upper and lower first coils

11a, 11b: upper and lower second coils 12a, 12b: upper and lower third coils

14: right horizontal deflection coil 15: left horizontal deflection coil

16a, 16b: first and second permanent magnets

The present invention relates to a deflection yoke, and more particularly, by attaching a drum core wound with a coil connected to a horizontal deflection coil and a vertical deflection coil to the screen side of the deflection yoke, it is possible to prevent misconvergence and unnecessary radiation field. And a deflection yoke for preventing misconvergence and unnecessary radiation.

Generally, the deflection yoke is composed of a pair of horizontal deflection coils and a pair of vertical deflection coils to form a magnetic field for deflecting beams emitted from the electron gun in the horizontal and vertical directions.

By the way, in the conventional deflection yoke, the ultra-low frequency radiated from the horizontal deflection coil has a harmful effect on the human body.

Therefore, in order to prevent the effect of the ultra-low frequency as described above, by attaching a coil for preventing radiation to the outside of the deflection yoke to attenuate the generation of the ultra-low frequency to a certain degree, the amount of generation of the ultra-low frequency does not exceed a certain value. .

In addition, the deflection yoke has a horizontal deflection coil and a vertical deflection coil to prevent misconvergence on the outside of the deflection yoke due to the mutual influence of the horizontal deflection coil and the vertical deflection coil. A dream core having a horizontal correction coil and a vertical correction coil connected to the deflection coils was used.

Thus, the conventional deflection yoke has to counter the trend of miniaturization of the deflection yoke since the drum core to which the coil for the prevention of misconvergence is wound in addition to the coil for the unnecessary radiation prevention must be attached.

The object of this invention is to solve this problem, and the object of this invention is to make a small and light weight by attaching a coil to the deflection yoke to prevent unnecessary radiation and misconvergence on the drum core. To provide a deflection yoke for preventing radiation and unnecessary radiation.

A feature of this invention for achieving this object is, in a deflection yoke having left and right horizontal deflection coils and a few upper vertical deflection coils, attached to a coil separator on one side of the screen portion, the first bobbin being mounted by a first bobbin. First and second drum cores coupled to the permanent magnets, upper first and second coils wound on the first and second drum cores, and upper third coils wound on an outer circumferential surface of the first bobbin; Second and fourth drum cores coupled to the second permanent magnet by the second bobbin on the other side of the screen part, and third and fourth drum cores coupled to the second permanent magnet by the second bobbin on the other side of the screen part; And a lower yoke of the third and fourth drum cores and a lower yoke of the third coil wound on the outer circumferential surface of the second bobbin. Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a side view of a missile convergence yoke for preventing misconvergence and unnecessary radiation according to the present invention, and a pair of horizontal deflection coils (not shown) is mounted inside the coil separator 2 of the deflection yoke 1 and The pair of vertical deflection coils 4 and 4 'is wound around and mounted on the ferrite core 3.

For convenience of description, the pair of horizontal deflection coils is divided into a left horizontal deflection coil and a right horizontal deflection coil, and a pair of vertical deflection coils is divided into an upper vertical deflection coil 4 and a lower vertical deflection coil 4 '.

On the upper and lower sides of the screen portion 5 of the coil separator 3, a pair of unnecessary radiation and misconvergence preventing means 8, 9, which are the core technical components of the present invention, are mounted at positions symmetrical to each other. For convenience of description, reference numeral 8 is referred to as an upper preventing means, and reference numeral 9 is called a lower preventing means.

The upper and lower preventing means 8 and 9 are shown in detail in FIGS. 2A and 2B. Since the pair of upper and lower preventing means 8 and 9 have the same configuration, only one upper preventing means 8 is shown and the lower preventing means 9 is denoted by the reference numerals in parentheses.

In the upper preventing means 8, as shown in FIG. 2A, the first drum core 6a and the second drum core 7a of the type I are inserted into the first bobbin 18a, and the second The first permanent magnet 16 as shown in (b) is mounted in a state coupled to be parallel to one side of the first bobbin 18a. Further, the third drum core 6b, the fourth drum core 7b, and the second permanent magnet (3) having the same configuration as the upper preventing means 8 on the lower side of the screen portion 5 side of the deflection yoke 1 18b) is fitted with a lower prevention means 9 coupled thereto. The upper and lower first coils 10a and 10b connected to the right horizontal deflection coil are wound around the first drum core 6a and the third drum core 6b, and the second drum core 7a is wound. And winding the upper and lower second coils 11a and 11b connected to the left horizontal deflection coil to the fourth drum core 7b. In addition, the outer side of the bobbin (18a, 18b) is wound the upper and lower third coils (12a, 12b) connected to the vertical deflection coil.

The connection relationship between the unnecessary radiation and non-convergence prevention means 8 and 9 of this configuration and the horizontal deflection coils and the vertical deflection coils 4 and 4 'of the deflection yoke is shown in FIGS. same as b).

As shown in Fig. 3A, the right horizontal deflection coil 14 and the left horizontal deflection coil 15 are connected in parallel. The upper and lower first coils 10a and 10b connected in series are connected to the right horizontal deflection coil 14, and the upper and lower first coils 12a and 12b are connected to the left horizontal deflection coil 15. Is connected. In the case of the vertical deflection coil, as shown in FIG. 3 (b), the upper and lower vertical deflection coils 4 and 4 'are connected in parallel, and the upper and lower third coils 12a are connected to one connection point thereof. ) And 12b are connected in series.

Here, each of the coils wound around the first, second, third and fourth drum cores 6a, 6b, 7a, 7b and the first, second bobbins 18a, 18b may be Winding so that the magnetic field is generated in the direction opposite to the unnecessary radiation of the upper, lower horizontal deflection coil (14), (15).

The misconvergence and unnecessary radiation prevention deflection yoke according to the present invention configured as described above includes left and right horizontal deflection coils 14 and 15 and upper and lower vertical deflection coils 4 mounted on the inner and outer sides of the deflection yoke 1. When the sawtooth pulse is applied to (4 '), the magnetic field is generated by Fleming's left-hand law to deflect the electron beam emitted from the electron gun to determine the position on the screen. At this time, the magnetic fields generated by the left and right horizontal deflection coils 14 and 15 and the upper and lower vertical deflection coils 4 and 4 'affect each other and cause misconvergence. The first and second. Upper and lower first coils 10a, 10b and second coils 11a, 11b, wound around the third and fourth drum cores 6a, 6b, 7a, and 7b. The magnetic fields of the upper and lower third coils 12a and 12b wound on the bobbins 18a and 18b prevent misconvergence due to the influence of magnetic fields generated from each other as in the prior art.

In addition, since the magnetic fields generated in the bobbins 18a and 18b generate magnetic fields in the direction opposite to the unnecessary radiation magnetic fields generated in the left and right horizontal deflection coils 14 and 15 as shown in FIG. The unnecessary radiation magnetic field (ψA) has an effect that a considerable amount is attenuated by the magnetic field (ψH).

Thus, this design has the effect of miniaturizing and reducing the deflection yoke by simultaneously preventing misconvergence and unnecessary radiation by the coils wound on the drum core and the bobbin.

Claims (1)

In a deflection yoke having left and right horizontal deflection coils 14 and 15 and upper and lower vertical deflection coils 4 and 4 ', it is attached to the coil separator 2 on one side of the screen portion 5. First and second drum cores 6a and 7a coupled to the first permanent magnet 16a by the first bobbin 18a, and the first and second drum cores 6a and 7a. ) The first and second coils 10a and 11a wound on the upper side, the upper third coil 12a wound on the outer circumferential surface of the first bobbin 18a, and the other side of the screen unit 5. The second and fourth drum cores 6b and 7b coupled to the second permanent magnet 16b by the second bobbin 18b and the second bobbin 18b on the other side of the screen part 5b. 3, coupled with the permanent magnet 16ba. Fourth drum cores 6b and 7b, lower first and second coils 10b and 11b wound around the third and fourth drum cores 6b and 7b, and the second Misconvergence and unnecessary radiation prevention deflection yoke, characterized by consisting of the lower third coil (12b) wound on the outer peripheral surface of the bobbin (18b).