JPH06260110A - Deflection yoke and color cathode-ray tube apparatus provided with the deflection yoke - Google Patents

Abstract

PURPOSE:To provide a deflection yoke with which desired degree of comatic aberration and trilemma can be corrected and which has excellent vertical deflection sensitivity. CONSTITUTION:Almost E-shaped magnetic bodies 10A, 10B, a core on which a vertically deflecting coil 4 is coiled, and magnetic bodies 6A, 6B for magnetic field leakage are installed in an electron gun side of a deflection yoke 2 wherein the magnetic bodies 6A, 6B are set between the E-shaped magnetic bodies 10A, 10B and are longer in tube axial direction than in the horizontal axial direction. At the same time, the almost E-shape magnetic bodies 10A, 10B are provided with at least a pair of auxiliary coils 13 which are connected with the vertically deflecting coil 4 in series. Consequently, the comatic aberration and trilemma in the upward and downward directions of a screen can be corrected as desired without mutual interference solely by the deflection yoke. Also the coiling times and the resistance of the auxiliary coil are lessened and the vertical defection sensitivity is improved.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a deflection yoke used by being attached to a color cathode ray tube which generates an in-line array of multiple electron beams, and in particular, coma aberrations of upper and lower rasters on a screen and misconvergence components. The present invention relates to a deflection yoke capable of correcting or adjusting a trilemma (see Trilemma: Television Society of Japan, Showa 51, Television System / Circuit Study Material TBS34-3).

[0002]

2. Description of the Related Art A first conventional device having a function of correcting coma on a screen picks up a leakage magnetic field of a vertical deflection magnetic field as described in Japanese Unexamined Patent Publication No. 62-217546. The deflection yoke is provided with a magnetic material piece that causes an auxiliary vertical deflection magnetic field of a shape to be generated in the electron gun side region.

Here, coma aberration will be described with reference to FIG. In the figure, 18R indicates a red horizontal line raster, 18B indicates a blue horizontal line raster, 18G indicates a green horizontal line raster, 19 indicates coma aberration, and 20 indicates a fluorescent screen.

The coma aberration refers to the amount of color misalignment between the horizontal line rasters 18R and 18B of electron beams at both ends and the horizontal line raster 18G of the central electron beam in the upper and lower portions of the screen.

Further, as a second conventional device having a function capable of independently correcting coma aberration and trilemma, Japanese Patent Laid-Open Publication No.
As described in JP-A-1-253750, a substantially E-shaped magnetic body is provided at the rear end of the deflection yoke, and an auxiliary coil connected in series with the vertical deflection coil is provided on the magnetic body. The auxiliary coils provided at both ends of the magnetic body generate a magnetic field in the same direction as the direction of the main vertical deflection magnetic field generated by the vertical deflection coil. There is one configured to generate a magnetic field in a direction opposite to the direction of the deflection magnetic field.

Now, the trilemma will be described with reference to FIG. In the figure, 9A, 9D, and 9C indicate misconvergence, 24 indicates a red raster, and 25 indicates a blue raster.

In the in-line type color cathode ray tube, if the magnetic field distribution of the deflection yoke is pincushion type with the horizontal deflection coil and barrel type with the vertical deflection coil, the convergence of the electron beams at both ends can be obtained only by the deflection yoke. The well-known principle of self-convergence,
The misconvergence on the screen due to the electron beams on both ends cannot be completely reduced to zero, and for example, when averaged only in the first quadrant on the screen, the misconvergence pattern as shown in FIG. 5 remains. This phenomenon is called the trilemma. In the raster pattern shown in FIG. 5, the sum of misconvergence 9A, 9D and 9C, that is, the amount represented by 9A + 9D + 9C is called a trilemma. It is also known that the trilemma can be controlled by the difference between the effective magnetic field length of the horizontal deflection magnetic field behind the deflection yoke and the effective magnetic field length of the vertical deflection magnetic field. That is, the trilemma is an amount that is almost uniquely determined if the structure of the deflection yoke is determined, and the trilemma tends not to change even if the winding distribution is changed unless the structure of the deflection yoke is changed.

[0008]

However, in the first prior art described above, since the leakage magnetic field of the vertical deflection magnetic field is formed into a pincushion type to correct the coma aberration, the coma aberration is limited to a specific direction. At the same time as it cannot be corrected, the dipole component in the same direction as the vertical deflection magnetic field contained in the pincushion type magnetic field produces an effect equivalent to increasing the effective magnetic field length of the vertical deflection magnetic field, and the trilemma which is a component of misconvergence Increase. Therefore, in order to achieve both coma aberration and trilemma correction, the trilemma before correction of coma aberration must be designed to have a negative value and offset after correction of coma aberration. Was a major constraint on the design of the deflection yoke.

In addition, the second prior art requires six auxiliary coils, so that the resistance of the auxiliary coils deteriorates the vertical deflection sensitivity and increases the manufacturing cost.

The present invention has been made in consideration of the above-mentioned problems, and an object of the present invention is to make it possible to correct coma aberration and trilemma as desired without mutual limitation, and to reduce the number of turns and resistance of the auxiliary coil. Another object of the present invention is to provide a deflection yoke which is reduced and has excellent vertical deflection sensitivity.

[0011]

In order to achieve the above object, in a deflection yoke according to the present invention, a magnetic body having a protrusion protruding toward the neck of a color cathode ray tube on the electron gun side of the deflection yoke. By forming the leakage magnetic field of the vertical deflection magnetic field emitted from the protrusion of the magnetic body into a pincushion shape by providing, and by providing the magnetic body with an auxiliary coil, the auxiliary coil is connected to the vertical deflection coil. A barrel-shaped magnetic field is generated from the protrusion of the magnetic body.

[0012]

With the above-described structure, the leakage magnetic field generated by the vertical deflection coil forms a pincushion-shaped magnetic field in the space between the protrusions of the magnetic body, so that the vertical magnetic field acting on the electron beam in the center is generated. The force can be made larger than the force acting on the electron beam at both ends, and the action of correcting the coma aberration in the direction shown in FIG. 4 is produced, and the trilemma is caused by the dipole magnetic field component in the same direction as the vertical deflection magnetic field included in this leakage magnetic field. The effect of changing in the positive direction occurs.

Further, since the auxiliary coil provided on the protrusion of the magnetic body generates a barrel-shaped correction magnetic field, when the direction of this correction magnetic field is opposite to that of the vertical deflection magnetic field, the central electron beam is generated. The force acting in the vertical direction can be made smaller than the force acting on the electron beams at both ends, and the action to correct the coma aberration in the direction shown in FIG. 4 is caused, and the trilemma is moved in the negative direction by the dipole magnetic field component included in the correction magnetic field. Produces the effect of changing. Therefore, by optimizing the shape of the magnetic material, the number of turns of the auxiliary coil, and the current direction, the coma aberration at the top and bottom of the screen and the trilemma that is the component of misconvergence can be corrected by the desired amount without mutual limitation. .

[0014]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a perspective view showing an outer appearance of a deflection yoke as a first embodiment of the present invention and a color cathode ray tube device having the deflection yoke, and FIG. 2 is a deflection as a first embodiment of the present invention. FIG. 3 is a plan view showing the yoke, and FIG. 3 is a front view of the cross section of the neck portion of the color cathode ray tube and a main portion of the deflection yoke as the first embodiment of the present invention viewed from the screen side. In each figure, 1 is a color cathode ray tube, 2 is a deflection yoke, 3 is a separator, and 4
Is a vertical deflection coil, 5 is a core, 6A and 6B are magnetic materials for capturing a leakage magnetic field, 7 is a neck portion, 8 is a leakage magnetic field of a vertical deflection magnetic field, 9B, 9G and 9R are blue, green and red electron beams, 10
A and 10B are substantially E-shaped magnetic bodies, 11A and 11B are protrusions at both ends, 12A and 12B are central protrusions, 13 is an auxiliary coil, 14 is a direction of current, 15 is a direction of vertical deflection magnetic field, 1
Reference numeral 6 is a first correction magnetic field, 17 is a second correction magnetic field, 34 is a deflection force acting on the central electron beam, 35 is a deflection force acting on both end electron beams, 36 is a tube axis direction, and 37 is an electron gun side.

As shown in FIGS. 2 and 3, the deflection yoke of this embodiment has a color cathode ray tube having a neck portion 7 in which blue, green and red electron beams 9B, 9G and 9R are arranged in a line.
The neck portions 7 are opposed to each other, and both end protrusions 11A, 11
B and a pair of substantially E-shaped magnetic bodies 10A and 10B having central protruding portions 12A and 12B and leakage magnetic field trapping magnetic bodies 6A and 6
B is arranged on the electron gun side 37 of the deflection yoke 2. Further, the central protrusions 12A, 12 facing each other in the horizontal direction
An auxiliary coil 13 is wound around B, and is connected in series with the vertical deflection coil 4 so that the vertical deflection current flows in the current direction 14 shown in the drawing when the screen is deflected in the upward direction. With such a configuration, the leakage magnetic field 8 of the vertical deflection magnetic field shown in FIG. 2 passes through the leakage magnetic field capturing magnetic bodies 6A and 6B, and both end projections 11A and 11 of the substantially E-shaped magnetic bodies 10A and 10B.
3 is guided to the neck portion 7 of the color cathode ray tube 1,
As shown in, the pincushion-shaped first correction magnetic field 16 is generated in the same direction as the direction 15 of the vertical deflection magnetic field. Further, the central protruding portions 12A, 12 of the substantially E-shaped magnetic bodies 10A, 10B are
From the auxiliary coil 13 wound around B, the barrel-shaped second correction magnetic field 17 is generated in the direction opposite to the direction 15 of the vertical deflection magnetic field.

Next, the specific operation of the first embodiment shown in FIG. 3 will be described in more detail. For the sake of clarity, the action of the first correction magnetic field 16 and the second correction magnetic field 17
The two functions of the above will be described. The two functions are shown in FIGS.

FIG. 6 is a diagram showing the action of the first correction magnetic field 16. In the figure, reference numerals 21, 22, and 23 are horizontal components of the correction magnetic field. It should be noted that the same reference numerals are given to the portions showing the same contents as in FIG. Now, consider a case where the electron beams 9B, 9G, and 9R are deflected upward as viewed from the screen side. Abbreviation E
Protrusions 11A and 11B at both ends of the character-shaped magnetic bodies 10A and 10B
Receives the leakage magnetic field 8 of the vertical deflection magnetic field and generates a pincushion-shaped first correction magnetic field 16 in the neck portion 7. Due to the pincushion shape of the first correction magnetic field 16, the horizontal direction component 22 of the correction magnetic field acting on the central electron beam 9G is stronger than the horizontal direction components 21 and 23 of the correction magnetic field acting on the electron beams 9B and 9R at both ends. . Therefore, the deflection force 34 of the vertical upward component acting on the central electron beam 9G is larger than the deflection force 34 of the vertical upward component acting on the electron beams 9B and 9R at both ends.
As a result, misconvergence due to the coma aberration 19 at the upper end of the screen shown in FIG. 4 can be corrected.

In the case of downward deflection, the same principle can be used to correct the misconvergence due to the coma aberration 19 at the lower end of the screen shown in FIG. At the same time, the action of the first correction magnetic field 16 has another action other than the action of correcting the coma aberration 19. As shown in FIG. 6, the direction of the first correction magnetic field 16 formed in the neck portion 7 is the same as the direction 15 of the vertical deflection magnetic field. Therefore, it is as if the effective magnetic field length of the vertical deflection magnetic field in the tube axis direction 36 is the deflection yoke 2
This means that it is extended to the electron gun side 37, and when deflecting to the screen corner portion, vertical deflection starts before horizontal deflection, which increases color misregistration at the corner portion, resulting in misconvergence components. A certain trilemma will increase.

Further, at this time, an action of correcting the upper and lower pincushion distortions is further produced with an increase in the trilemma. However, since the change amount of the trilemma and the change amount of the upper and lower pincushion distortions are mutually related, the following description will be limited to the trilemma. . In the above description, an example in which the auxiliary coil 13 is not wound around the protrusions 11A and 11B at both ends is shown, but the auxiliary coil 13 may be wound. In that case, the first correction magnetic field 16 can be further strengthened.

Next, the action of the second correction magnetic field 17 will be described with reference to FIG. FIG. 7 shows a substantially E-shaped magnetic body 10A,
The auxiliary coil 1 is provided only on the central protrusions 12A and 12B of 10B.
3 shows the correction effect when 3 is wound. Now, consider a case where the electron beams 9B, 9G, and 9R are deflected upward as viewed from the screen side. When the vertical deflection current flows in the direction 14 in the auxiliary coil 13 connected in series with the vertical deflection coil 4, a barrel-shaped second correction magnetic field 17 is generated in the neck portion 7. The second correction magnetic field 17 acts on each of the electron beams 9B, 9G, and 9R.
Has a larger magnetic flux density toward the left and right ends, the downward deflection forces 34 and 35 acting on the beam are 9 times as compared with the electron beam 9G.
Works strongly on B and 9R. Therefore, if viewed relatively, the upward deflection amount 34 of the 9G electron beam is increased as compared with the upward deflection amount 35 of the 9B and 9R electron beams.
It is possible to correct misconvergence due to the coma aberration 19 at the upper end of the screen shown in FIG.

In the case of the downward deflection, the same principle can be used to correct the misconvergence due to the coma aberration 19 at the lower end of the screen shown in FIG. At the same time, the action of the second correction magnetic field 17 has another action in addition to the action of correcting the coma aberration 19. As shown in FIG. 7, the direction of the second correction magnetic field 17 formed in the neck portion 7 is opposite to the direction 15 of the vertical deflection magnetic field, so that the second correction magnetic field 17 extends to the electron gun side 37 of the deflection yoke 2. By shunting the vertical deflection magnetic field, the effective magnetic field length of the vertical deflection magnetic field in the tube axis direction 36 is shortened, and the above-mentioned trilemma which is a component of misconvergence can be reduced. Therefore, in the present invention in which the action of the first correction magnetic field 16 and the action of the second correction magnetic field 17 are combined, the coma aberration 19 is promoted to increase the correction amount, and the trilemma cancels out, and there is almost no change. However, if the shapes of the substantially E-shaped magnetic bodies 10A and 10B and the leakage magnetic field capturing magnetic bodies 6A and 6B, the number of turns of the auxiliary coil 13, and the direction 14 of the current are changed, the coma aberration 1
It is also possible to make the correction amounts of 9 and the trilemma different.

Next, a second embodiment of the present invention will be described. FIG. 8, FIG. 9 and FIG. 10 are a perspective view, a plan view and a front view of a main part, respectively, showing a second embodiment of the present invention. In each figure, 24A and 24B are lengths in the axial direction of the pipe, and 25A and 25B.
Is a protrusion at both ends. It should be noted that parts having the same contents as in FIGS. 1 to 3 are given the same reference numerals. The feature of the present invention is that, as shown in FIG. 9, the length 24B of the projections 25A, 25B at both ends of the substantially E-shaped magnetic bodies 10A, 10B in the pipe axial direction 36 is set to the length of the central projections 12A, 12B in the pipe axial direction 36. It is made longer than the length 24A. Therefore, the protrusions 25 on both ends
The effective magnetic field length of the first correction magnetic field 16 generated by A and 25B in the tube axis direction 36 becomes longer than the effective magnetic field length of the second correction magnetic field 17 generated by the central protrusions 12A and 12B in the tube axis direction 36. If the leakage magnetic field capturing magnetic bodies 6A and 6B have the same size, both end protrusions 25 shown in FIG.
The effect of the first correction magnetic field 16 generated by A and 25B is increased. As a result, the correction amount of the coma aberration 19 and the trilemma can be increased, but the correction amount of the coma aberration 19 is remarkably increased. Therefore, the leakage magnetic field capturing magnetic body 6
Even if A and 6B are reduced, it is possible to obtain the same correction amount of the trilemma as in the first embodiment, and the coma aberration 19
The correction amount of can be increased. Furthermore, when the correction amount including the auxiliary coil 13 is set to be the same as that in the first embodiment, there is an effect that the number of turns of the auxiliary coil 13 can be reduced.

Next, a third embodiment of the present invention will be described. FIG. 11 is a perspective view showing the left half of the main part of the third embodiment of the present invention when viewed from the neck side. The feature of the present invention resides in that the leakage magnetic field capturing magnetic body 6B and the substantially E-shaped magnetic body 10B are separated from each other and configured as separate parts. By using the leakage magnetic field trapping magnetic body 6B and the substantially E-shaped magnetic body 10B separately, it is possible to reduce deformation during manufacturing and transportation of the magnetic body itself, as compared with the case of using the integrally manufactured body.

Next, a fourth embodiment of the present invention will be described. FIG. 12 is a perspective view showing the left half of the main part of the fourth embodiment of the present invention when viewed from the neck side. In the figure, 29 is a holding mechanism and 36 is a pipe axis direction. In addition, the same reference numerals are given to the portions showing the same contents as in FIG. 7. A feature of the present invention is that a holding mechanism 29 as shown in FIG. 12 is provided in order to make the leakage magnetic field capturing magnetic body 6B movable in the tube axis direction 36. By providing this holding mechanism 29, a large amount of the leakage magnetic field 8 of the vertical deflection magnetic field can be taken in when the leakage magnetic field capturing magnetic body 6B is moved in the tube axis direction 36 on the screen side, as shown in FIG. The pincushion-shaped first correction magnetic field 16 can be strengthened. Further, when the leakage magnetic field capturing magnetic body 6B is moved to the electron gun side 37, the amount of the leakage magnetic field 8 of the vertical deflection magnetic field taken in can be reduced, and the pin cushion type first correction magnetic field 16 as shown in FIG. Can be weakened. That is, there is an effect that the intensity of the pincushion-shaped first correction magnetic field 16 can be changed and the correction amounts of the coma aberration 19 and the trilemma can be adjusted.

Next, a fifth embodiment of the present invention will be described. FIG. 13 is a perspective view showing the left half of the main part of the fifth embodiment of the present invention when viewed from the neck side. In the figure, 27 is a moving direction, 28 is a rotating direction, 29 is a holding mechanism, 30 is a protrusion,
Reference numeral 31 is a movable member, 32 is an end portion, and 33 is an arcuate holding claw. Note that the same reference numerals are given to the portions showing the same contents as in FIG. As shown in FIG. 13, the feature of the present invention resides in that the leakage magnetic field capturing magnetic body 6B is provided with an arrow 28 on a horizontal plane with the end portion 32 of the leakage magnetic field capturing magnetic body 6B on the side of the substantially E-shaped magnetic body 10B as a base axis. To rotate in the direction of
That is, a holding mechanism including 0, the movable member 31, and the circular holding claw 33 is provided. Magnetic body 6B for capturing leakage magnetic field
Near the upper and lower ends of the end portion 32 of the
Is provided on the protrusion 30. The claw 33 fits and fixes the leakage magnetic field capturing magnetic body 6B. Since the movable member 31 which holds the magnetic field 6B for capturing the leakage magnetic field and the projection 30 with a space therebetween is structured to be movable in the direction shown by the arrow 27, the magnetic member for capturing the leakage magnetic field is accompanied by this movement. The body 6B can be rotated in the direction of the arrow 28.
By providing these holding mechanisms, when the leakage magnetic field capturing magnetic body 6B is brought closer to the protrusion 30, the distance between the leakage magnetic field capturing magnetic body 6B and the core 5 is reduced, and the leakage magnetic field 8 of the vertical deflection magnetic field 8 is generated. Can be incorporated, and the pin cushion type first correction magnetic field 16 as shown in FIG. 6 can be strengthened. When the leakage magnetic field capturing magnetic body 6B is moved away from the protrusion 30, the leakage magnetic field capturing magnetic body 6B is formed.
And the core 5 are widened, and the vertical deflection magnetic field leakage field 8
Can be incorporated in a small amount, and the pincushion-shaped first correction magnetic field 16 as shown in FIG. 6 can be weakened. That is, the pincushion-shaped first correction magnetic field 16
There is an effect that the correction amount of the coma aberration 19 and the trilemma can be adjusted by changing the intensity of.

Although the embodiments of the present invention have been described above with reference to the drawings, the protrusions of the first and second magnetic bodies used in the above description are located at the center of the pair of protrusions at both ends. The shape is not limited to the substantially E shape as long as it has the central protrusion.

[0028]

The present invention has the following effects.

That is, by providing the substantially E-shaped magnetic body, the leakage magnetic field capturing magnetic body, and the two auxiliary coils, the coma aberration and the trilemma in the vertical direction of the screen can be corrected as desired without mutual limitation. Further, since the number of turns and resistance of the auxiliary coil can be reduced, it is possible to provide a deflection yoke having excellent vertical deflection sensitivity.

[Brief description of drawings]

FIG. 1 is a perspective view showing an outer appearance of a deflection yoke as a first embodiment of the present invention and a color cathode ray tube device including the deflection yoke.

FIG. 2 is a plan view showing a deflection yoke as the first embodiment of the present invention.

FIG. 3 is a sectional view of a neck portion of a color cathode ray tube and a first aspect of the present invention.
3 is a front view of the main part of the embodiment of FIG.

FIG. 4 is a pattern diagram showing coma aberration.

FIG. 5 is a pattern diagram showing misconvergence in which a trilemma occurs.

FIG. 6 is a front view showing the action of a first correction magnetic field generated from a substantially E-shaped magnetic body.

FIG. 7 is a front view showing the action of a second correction magnetic field generated from the substantially E-shaped magnetic body.

FIG. 8 is a perspective view showing the outer appearance of a deflection yoke as a second embodiment of the present invention.

FIG. 9 is a plan view showing a deflection yoke as a second embodiment of the present invention.

FIG. 10 is a front view of a main portion of a cross section of a neck portion of a color cathode ray tube and a main portion of a second embodiment of the present invention viewed from a screen side.

FIG. 11 is a perspective view of a main part of a third embodiment of the present invention, showing the left half when viewed from the electron gun side.

FIG. 12 is a perspective view of a main part of a fourth embodiment of the present invention, showing the left half when viewed from the electron gun side.

FIG. 13 is a perspective view of a main part of a fifth embodiment of the present invention, showing the left half when viewed from the electron gun side.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Color cathode ray tube, 2 ... Deflection yoke, 3 ... Separator, 4 ... Vertical deflection coil, 5 ... Core, 6A, 6B ... Leakage magnetic field capturing magnetic body, 7 ... Neck part, 8 ... Leakage magnetic field of vertical deflection magnetic field, 9B, 9G, 9R ... Blue, green, red electron beams, 9A, 9D, 9C ... Misconvergence, 10A, 10B ... Substantially E-shaped magnetic material, 11A, 11B, 25A, 25B ... Both end protrusions, 12A, 12B ... Center Protrusion, 13 ... Auxiliary coil, 14 ... Current direction, 15 ... Vertical deflection magnetic field direction, 16 ... First correction magnetic field, 17 ... Second correction magnetic field, 18R, 18G, 18B ... Red, green, blue horizontal lines Raster, 19 ... Coma aberration, 20 ... Phosphor screen, 21, 22, 23 ... Horizontal component of correction magnetic field, 24A, 24B ... Tube axial direction length, 24 ... Red raster, 25 ... Blue raster, 27 ... Moving direction , 28 ... Rotation direction, 29 ... Holding mechanism, 30 ... Projection part, 31 ... Movable member, 32 ... End part, 33 ... Arc-shaped holding claw, 34 ... Deflection force acting on central electron beam, 35 ... Electron beam on both ends Working deflection force, 36 ... Tube axis direction, 37 ... Electron gun side.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Soichi Sakurai, 292 Yoshida-cho, Totsuka-ku, Yokohama, Kanagawa, Ltd. Inside the Video Media Research Laboratory, Hitachi, Ltd. (72) Inventor, Kazumasa Hirai, 3300, Hayano, Mobara, Chiba Co., Ltd. Hitachi, Ltd. Electronic Device Division (72) Inventor Masayuki Abe 1 Kitano, Mashiro, Mizusawa, Iwate Prefecture

Claims (4)

[Claims] 1. A deflection yoke which is arranged and used on a neck portion of a color cathode ray tube which generates an in-line array of multiple electron beams, and which projects toward the neck portion of the color cathode ray tube on the electron gun side of the deflection yoke. By providing a magnetic body having a protrusion, the leakage magnetic field of the vertical deflection magnetic field emitted from the protrusion of the magnetic body is formed into a pincushion shape, and an auxiliary coil is provided on the magnetic body to vertically deflect the auxiliary coil. A deflection yoke, characterized in that a barrel-shaped magnetic field is generated from a protrusion of the magnetic body by connecting to a coil. 2. The deflection yoke according to claim 1, wherein the first magnetic body has first to third protrusions protruding toward the neck portion of the color cathode ray tube, and the first to third magnetic bodies. 4th to 6th facing the protrusion through the neck
A second magnetic body having a protruding portion, and at least one pair of auxiliary coils on the protruding portions of the first and second magnetic bodies, the auxiliary coil being connected to the vertical deflection coil, and the vertical deflection coil Deflection characterized in that third and fourth magnetic bodies having a length in the tube axis direction longer than the length in the horizontal axis are arranged between the wound core and the first and second magnetic bodies. yoke. 3. The deflection yoke according to claim 2, wherein the first magnetic body and the third magnetic body, and the second magnetic body and the fourth magnetic body are formed of an integral magnetic body. Deflection yoke characterized by. 4. A color cathode ray tube for generating a multi-electron beam in an in-line arrangement, and a projection portion protruding toward a neck portion of the color cathode ray tube on an electron gun side of a deflection yoke attached to the color cathode ray tube and used. By forming a magnetic field having a magnetic field having a vertical deflection magnetic field emitted from the protrusion of the magnetic material into a pincushion shape,
And a deflection yoke configured to generate a barrel-shaped magnetic field from the protrusion of the magnetic body by providing the magnetic body with an auxiliary coil and connecting the auxiliary coil to a vertical deflection coil. Color cathode ray tube device.