JP2002216667A - Deflection yoke and cathode ray tube device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a deflection yoke and a cathode ray tube device that solve the problems such as a cathode ray tube attached on a pyramid trapezoidal deflection yoke for the generating of heat of deflection yoke in accordance with a large increase of deflecting electricity corresponding to a large screen, minute details but radiation, cost, and difficulty in mass production are the difficulty as shackles. SOLUTION: A deflection yoke attachment 20 of a cathode ray tube forms pyramid trapezoid. Inside of a coil separator 24 formed pyramid trapezoid to fit to the deflection yoke attachment 20, a pair of pyramid trapezoidal horizontal deflection coil 23 is arranged and outside of the coil separator 24 a conical core 33 coiled toroidal vertical deflection coil 35 is arranged.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a deflection yoke suitable for use in a color cathode ray tube having a truncated pyramid-shaped deflection yoke mounting portion, and a cathode ray tube device provided with the deflection yoke.

[0002]

2. Description of the Related Art Conventionally, a color cathode ray tube generally used in a color television receiver or the like has a face panel 51 having a substantially rectangular effective portion as shown in FIG.
And a glass vacuum envelope comprising a funnel 52 connected to the face panel 51 and a cylindrical neck 53 connected to a small-diameter portion of the funnel 52. On the inner surface of the effective portion of the face panel 51, a phosphor screen 54 formed of a three-color phosphor layer in the form of dots or stripes that emit blue, green, and red light and a black light-shielding layer is formed.

Further, a shadow mask 56 having a large number of electron beam passage holes 55 is provided inside the face panel 51 so as to face the phosphor screen 54.
Are arranged through. A magnetic shield 62 is attached to the mask frame 57. An in-line type electron gun 59 for emitting three electron beams 58B, 58G, 58R is arranged in the neck 53 so as to face the shadow mask 56, and the neck 5
The deflection yoke 61 is mounted on the deflection yoke mounting portion 60 located from the outer circumference of the funnel 52 to the outer circumference of the funnel 52.

The three electron beams 58B, 58G, 58R emitted from the electron gun 59 are deflected in the horizontal and vertical directions by the horizontal and vertical deflection magnetic fields generated by the deflection yoke 61.
By horizontally and vertically scanning the phosphor screen 54 through the shadow mask 56, the phosphor screen 54
A color image is reproduced and displayed above.

Further, a neck 53 at the rear of the deflection yoke 61
Is provided with a purity convergence correction device 63 such as a purity magnet for correcting the concentration state of the three electron beams 58B, 58G, 58R.

In such a color cathode ray tube, the electron gun 59 is configured as an in-line type that emits three electron beams 58B, 58G, 58R arranged in a line in the same plane. By generating the horizontal deflection magnetic field and the barrel-shaped vertical deflection magnetic field, the three electron beams 58B, 58G, and 58R arranged in a row and emitted from the electron gun 59 are deflected by the horizontal and vertical deflection magnetic fields. Is widely used as a self-convergence in-line type color cathode ray tube which can concentrate three electron beams 58B, 58G, 58R in a line over the entire screen without requiring any correction means.

On the other hand, a deflection yoke 61 mounted on such a color cathode ray tube is configured as shown in FIG.

That is, the deflection yoke is provided in the coil separator 6.
9. The coil separator 69 includes a coil separator main body 64 formed of a synthetic resin into a truncated cone shape, and a face panel 51 of the separator main body 64.
A large-diameter flange 65 formed on the large-diameter portion on the side
A small-diameter flange portion 66 is formed at the small-diameter portion on the third side, and a tongue piece 68 formed by a plurality of slits 67 in the axial direction is connected to the small-diameter flange portion 66.

A pair of saddle-shaped horizontal deflection coils 70 are formed on the inner surface of the coil separator 69.
Is mounted, and a pair of vertical deflection coils 71 is mounted on the outer peripheral surface of the separator body 64. This vertical deflection coil 7
1 is a toroidal winding of a pair of truncated conical cores 72 made of ferrite divided into two parts. The core 72 wound with the vertical deflection coil 71 is fixed so as to be integrated by a locking piece 73. Have been.

A purity convergence correction device 63 composed of an annular magnet for static convergence and purity adjustment is rotatably mounted on the outer periphery of the tongue piece 68. A band 74 is disposed, and the deflection yoke 61 is fixed to the outer peripheral surface of the cathode ray tube via the tongue piece 68 of the coil separator 69 by tightening the tightening band 74 with a screw 75 and a nut 76.

For example, an annular magnet for adjusting convergence is arranged on the outer periphery of the tongue piece 68 so that the purity / convergence correction devices 63 are separately mounted, and the tongue piece 68 is tightened and fixed by a tightening band 74. Then, an annular magnet for adjusting the purity is attached to a cylinder 78 having a flange 77 at one end formed separately from the separator 69, and this cylinder 78 is similarly provided with a tightening band 74 separately prepared.
In some cases, it is fixed to the outer periphery of the neck portion 53 by using.

In such a color cathode ray tube, the deflection yoke 61 is a large power consumption source. To reduce the power consumption of the color cathode ray tube, how to reduce the power consumption of the deflection yoke 61 is important. Element. In recent years, higher resolution and higher visibility have been demanded, and designs for using a higher deflection frequency have been made for this purpose.

The deflection yoke 6 has such a high deflection frequency.
1, the amount of heat generated by the deflection yoke 61 is enormous. Furthermore, in order to support OA equipment such as high-definition television (HDTV) and personal computers, the deflection frequency must necessarily be increased. However, all of these measures require an increase in deflection power and deflection. This causes an increase in the amount of heat generated by the yoke 61.

In general, to reduce the deflection power, the diameter of the neck 53 of the cathode ray tube is reduced, and the outer diameter of the deflection yoke mounting portion 60 on which the deflection yoke 61 is mounted is reduced, so that the operating space of the deflection magnetic field is reduced. Make the electron beam 58 smaller
It has been found that it is preferable to configure the deflection magnetic field to efficiently act on B, 58G, and 58R.

However, in the color cathode ray tube having the frusto-conical deflection yoke mounting portion 60 as described above, the electron beams 58B, 58G and 58R pass close to the inner surface of the deflection yoke mounting portion 60 of the vacuum envelope. Therefore, if the diameter of the neck portion 53 and the outer diameter of the deflection yoke mounting portion 60 are further reduced, the inner surface curved portion of the deflection yoke mounting portion 60 is required before the electron beams 58B, 58G, 58R reach the phosphor screen 54. As a result, the electron beams 58B and 5B are applied to the phosphor screen 54 when the diagonal portion of the phosphor screen 54 having the maximum deflection angle is deflected.
There is a possibility that a non-collision non-light emitting portion of 8G and 58R may be generated. Further, if the electron beams 58B, 58G, 58R continue to collide with the inner surface of the deflection yoke mounting portion 60, the temperature of the collision portion increases as the glass material forming the vacuum envelope melts, and in the worst case, Can cause implosion of the vacuum envelope.

In order to prevent these adverse effects, the diameter of the neck portion 53 and the deflection yoke mounting portion 60 must be formed large inevitably. As a result, the electron beams 58B, 58
Since the horizontal and vertical deflection magnetic fields do not efficiently act on G and 58R, the deflection power is increased. Therefore, in such a color cathode ray tube, the diameter of the neck portion 53 and the outer diameter of the deflection yoke mounting portion 60 are made thinner than ever,
It is difficult to take measures to reduce the deflection power.

In order to solve such a problem, when a rectangular raster is drawn on the phosphor screen 54, the electron beam inside the deflection yoke mounting portion 60 on which the deflection yoke 61 is mounted. Beam 58B, 5
Considering that the passing regions of 8G and 58R also have similar rectangular shapes, the shape of the deflection yoke mounting portion 60 is changed from the neck portion 53 toward the face panel 51.
A truncated pyramid-shaped cathode ray tube that gradually changes from a circular shape to a substantially rectangular shape has been considered.

As described above, when the deflection yoke mounting portion 60 is formed in a substantially truncated pyramid shape, the horizontal axis (long axis) and the vertical axis (short axis) of the deflection yoke 61 remain the same in the diagonal direction having the largest deflection angle. It is possible to reduce the diameter in the (axial) direction.
Therefore, the horizontal and vertical deflection coils 70 of the deflection yoke 61,
Since the beam 71 can be efficiently brought closer to the electron beams 58B, 58G, 58R, the deflection power can be reduced.

The deflection yoke 61 for this purpose is a saddle-saddle type deflection yoke 61 in which the horizontal and vertical deflection coils 70 and 71 are both saddle-shaped, or the horizontal deflection coil 70 is a saddle-shaped vertical deflection coil 71. Is a toroidal semi-toroidal deflection yoke 61
For example, use of various types is possible.

For example, when a saddle-saddle-type deflection yoke 61 consuming less power and a truncated pyramid-shaped deflection yoke mounting portion 60 are combined, a pair of saddle-shaped pyramids are wound inside a coil separator 69. A trapezoidal horizontal deflection coil 70 is arranged, and a pair of saddle-shaped truncated pyramid-shaped vertical deflection coils 71 are arranged outside a coil separator 69. These horizontal and vertical deflection coils 70, 71 are entirely combined. It is conceivable to adopt a configuration in which a truncated pyramid-shaped core 72 formed in a similar shape to the shape of the deflection yoke mounting portion 60 is provided outside the cover so as to cover the core.

[0021]

However, in the saddle-saddle type deflection yoke 61 formed as described above, the core 72 is disposed outside the saddle-saddle type horizontal and vertical deflection coils 70 and 71. Since there is no open space in the core 72 and the heat generated by the deflection coils 70 and 71 is confined in the core 72, the amount of heat generated by the deflection yoke 61 may be increased.

Saddle-saddle type deflection yoke 61
Can reduce the deflection power as compared with the semi-toroidal deflection yoke 61, but it is generally difficult to manufacture a truncated pyramid-shaped core 72 made of a magnetic material, A vertical deflection coil 71 is attached to a trapezoidal core 72.
It is also difficult to wind as a toroidal winding.

In order to facilitate this winding operation, the truncated pyramid-shaped core 72 may be divided into two parts from the center in the tube axis direction to form a pair of cores 72. Is often made of ferrite, and dividing the truncated pyramid-shaped core 72 symmetrically into two is actually a very difficult task.

Accordingly, the manufacturing cost of the deflection yoke 61 is increased and the versatility is lacking, so that it cannot be applied to mass-produced products such as consumer products.

The present invention has been made in view of such problems, and provides a deflection yoke and a cathode ray tube which can reduce deflection power and manufacturing cost and can be applied to mass-produced products. The purpose is to do.

[0026]

According to the present invention, there is provided a deflection yoke mounting portion which is arranged from a neck portion of a cathode ray tube to an outer periphery of a funnel portion, has horizontal and vertical deflection coils, and deflects an electron beam to illuminate a cathode ray tube. A deflection yoke for reproducing and displaying an image on a body screen, a coil separator shaped like a truncated pyramid so as to expand from a neck portion side to a funnel side, and disposed on an inner surface of the coil separator. A saddle-shaped horizontal deflection coil having a pair of truncated pyramid shapes, a truncated conical core disposed on the outer surface of the coil separator, and a pair of vertical deflection coils wound in a toroidal shape around the core. Deflection yoke.

A substantially rectangular face panel, a funnel-shaped funnel connected to the face panel, a neck connected to the small-diameter portion of the funnel, and the neck and the funnel. A cathode ray line having a truncated pyramid-shaped deflection yoke mounting portion formed at a connecting portion, an electron gun disposed in the neck portion for emitting an electron beam, and a phosphor screen formed on an inner surface of a face panel opposed to the electron gun; A tube and a deflection yoke mounted on a deflection yoke mounting portion of the cathode ray tube, the deflection yoke is a coil separator shaped into a truncated pyramid so as to expand from the neck side toward the funnel side, A pair of truncated pyramid-shaped saddle-shaped horizontal deflection coils arranged on the inner surface of the coil separator, and a circle arranged on the outer surface of the coil separator A pedestal-like core, a cathode ray tube apparatus comprises a pair of toroidal vertical deflection coils wound around the core.

With this configuration, not only can the electron beam be efficiently deflected and the deflection power can be reduced, but also the manufacturing cost can be reduced and the invention can be applied to mass-produced products. Things.

[0029]

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

FIGS. 1 and 2 show a deflection yoke and a color cathode ray tube device according to the present invention. The color cathode ray tube comprises a face panel 11 having a substantially rectangular effective portion,
A funnel-shaped funnel 12 connected to the face panel 11 and a glass vacuum envelope composed of a cylindrical neck portion 13 connected to a small diameter portion of the funnel 12 are provided. On the inner surface of the effective part of the face panel 11,
Dot or stripe 3 emitting blue, green and red
A phosphor screen 14 including a color phosphor layer and a black light shielding layer is formed.

Further, in the face panel 11 facing the phosphor screen 14, a shadow mask 16 having a large number of electron beam passage holes 15 is provided.
7 are arranged. An in-line type electron gun 19 that emits three electron beams 18B, 18G, and 18R is provided in the neck portion 13 so as to face the shadow mask 16. Further, a deflection yoke 21 is mounted on a deflection yoke mounting portion 20 having a truncated pyramid shape arranged from the outer circumference of the neck portion 13 to the outer circumference surface of the funnel 12. A purity / convergence correction device 22 for purity adjustment and static convergence adjustment is mounted.

The three electron beams 18B, 18G and 18R emitted from the electron gun 19 are deflected in the horizontal and vertical directions by the horizontal and vertical deflection magnetic fields generated by the deflection yoke 21.
By horizontally and vertically scanning the phosphor screen 14 via the shadow mask 16, a color image is reproduced and displayed on the phosphor screen 14.

In the above-described vacuum envelope, the neck 13
An axis coaxially extending through the center of the phosphor screen 14 is defined as a tube axis (Z axis), an axis extending in a horizontal direction orthogonal to the Z axis is defined as a horizontal axis (X axis). An axis that extends perpendicular to the axis in the vertical direction is represented as a vertical axis (Y axis).

The deflection yoke mounting portion 20 of the above-mentioned vacuum envelope
As shown in FIG. 3, is formed in a shape that gradually changes from a circular shape to a substantially rectangular shape from the neck portion 13 side toward the face panel 11. That is, the face panel 11 of the color cathode ray tube shown in FIG. 3A is cut from the face panel 11 side cut along the line BB to the neck portion 13.
The cross-sectional shape as viewed in the direction has a substantially rectangular shape as shown in FIG. 3B, and the cross-sectional shape similarly cut along the CC line on the face panel 11 side of the deflection yoke mounting portion 20 is as follows. As shown in FIG. 3 (c), it has a rectangular shape substantially similar to the shape shown in FIG. 3 (b). Similarly, the DD line and E
The cross-sectional shape cut along the -E line changes from a substantially rectangular shape to an elliptical shape as shown in FIGS. 3D and 3E, respectively. F-
The cross-sectional shape cut along the line F is circular as shown in FIG. 3F, and has the same shape as the cross-sectional shape of the neck portion 13.

By forming the deflection yoke mounting portion 20 in a substantially truncated pyramid shape, the diameter of the deflection yoke 21 in the X-axis and Y-axis directions can be reduced. For this purpose, the deflection yoke 21 will be described later. The horizontal deflection coil,
The electron beams 18B, 18G, and 18R can be arranged close to the electron beams 18B, 18G, and 18R.
Can be efficiently deflected, and the deflection power can be reduced.

On the other hand, the deflection yoke 21 mounted on the deflection yoke mounting portion 20 having the above-described structure is similar to that shown in FIGS.
As shown in detail, the electron beams 18B, 18G, 1
8R has a pair of truncated pyramid-shaped horizontal deflection coils 23 that generate a magnetic field for deflecting the 8R in the X-axis direction. Each of the pair of horizontal deflection coils 23 is formed of a saddle-shaped coil, By combining a pair of horizontal deflection coils 23, it is configured to exhibit a substantially truncated pyramid shape. The horizontal deflection coil 23 is attached along the inner peripheral surface of a coil separator 24 formed of a synthetic resin or the like into a substantially truncated pyramid shape corresponding to the deflection yoke mounting portion 20.

The coil separator 24 has a separator body 25, a large-diameter flange 26 disposed on the face panel 11 at one end of the separator main body 25, and a small-diameter flange 26 disposed on the neck 13 on the opposite side. And a cylindrical portion 28 formed so as to protrude from the flange portion 27 in the direction of the neck portion 13. The cylindrical portion 28 is provided with a slit (not shown) for tightening. Attached band 2
It is configured to be fixed to the outer periphery of the neck portion 13 by tightening the nine screws 30.

The horizontal deflection coil 23 is disposed inside the separator main body 25 and has bend portions 31 and 32 formed at both ends of the horizontal deflection coil 23. Is mounted so as to be positioned inside the flange portion 27, and is fixed by fixing means such as an adhesive or a tape.

A pair of truncated cone-shaped cores 33 made of a magnetic material such as a ferrite material, which is divided into two along a plane including the central axis, is mounted outside the separator body 25 of the coil separator 24. The core 33 includes a plurality of winding groups 34a, 34b, 34
a pair of vertical deflection coils 35 for generating a magnetic field for deflecting the toroidally wound electron beams 18B, 18G, and 18R in the Y-axis direction so as to form c.
After the winding of the vertical deflection coil 35, the cores 33 are held by the coil separator 2 by the locking pieces 36 made of elastic metal pieces.
4 is fixedly mounted on the outer periphery of the separator body 25.

The deflection yoke 21 thus formed is
In consideration of the optimal position with respect to the truncated pyramid-shaped horizontal deflection coil 23 and the length in the Z-axis direction, the inner diameter or outer diameter of the face panel 11 side end of the truncated conical core 33, that is, the large diameter end, It is determined according to the diameter on the diagonal axis on the large diameter side of the horizontal deflection coil 23. That is, the horizontal deflection coil 23
Is formed in a truncated pyramid shape, and the core 33 is formed in a truncated cone shape.
3 will be located closest to the diagonal axis portion.

Therefore, as shown in FIGS. 6 and 7, the radius of the large-diameter end of the core 33 is perpendicular to the Z-axis including the large-diameter end as shown by a solid line a in FIG. The diagonal axis (D axis) of the plane A and the horizontal deflection coil 23 indicated by the solid line b in FIG.
Horizontal deflection coil 2 at position B where the upper inner diameter intersects
3 is set substantially equal to the diameter rd. With this setting, the relationship between the diameter C1 of the core 33 and the diameter C2 of the horizontal deflection coil 23 on the Y axis is C1 ≧ C2.

Next, the deflection yoke 21 having the above-described structure is used.
Will be described in detail with reference to FIGS. For example, in the case of the deflection yoke 21 applied to a flat color cathode ray tube having a diagonal dimension of 76 cm, when the X axis is set to 0 ° with respect to the Z axis and the Y axis is set to an angle of 90 °, horizontal deflection is performed. On the face panel 11 side (front side) of the coil 23, as shown by a solid line in FIG.
Winding is performed by adjusting the winding distribution so as to be close to 35 °. Note that the conventional horizontal deflection coil has a winding distribution as shown by a broken line in the figure.

On the other hand, in the vertical deflection coil 35, as shown by the solid line in FIG.
In order to adjust the winding distribution so that the windings are densely close to 80 ° and 80 ° to 90 °, the windings are divided and wound so as to form a plurality of winding groups 34a, 34b and 34c. The conventional saddle-shaped vertical deflection coil has a winding distribution as shown by a broken line in the figure, and when this vertical deflection coil is formed in a toroidal shape, the center portion of the winding is the most wound. Yamagata has a high ratio.

As described above, the deflection yoke 21 of the present invention is
Compared with the conventional deflection yoke, the winding distribution is greatly changed.
The configuration is greatly different from the conventional configuration in that the winding is formed as a divided winding having a dense winding distribution around 0 to 40 °, 60 to 80 °, and 80 to 90 °.

As described above, by forming the optimum winding distribution, the electron beams 18B, 18G and 18R can be efficiently focused, and the image characteristics over the entire screen of the color cathode ray tube can be improved. Becomes

Further, the deflection yoke 21 having the above-described structure reduces the deflection power to enable efficient deflection. The deflection yoke 21 is configured by winding a vertical deflection coil 35 around a truncated conical core 33 in a toroidal shape. As a result, not only can the configuration be inexpensive, but also the temperature rise of the deflection yoke 21 can be sufficiently suppressed, and the deflection yoke 2 having good image characteristics can be obtained.
1 can be obtained. When the setting of such a winding distribution is changed, the deflection efficiency is degraded and the deflection sensitivity is degraded, so that a sufficient reduction in the deflection power cannot be expected.

It should be noted that the present invention is not limited to the above-described embodiment, but may be modified to change the winding form within the range of the winding distribution, or to a monochrome cathode ray tube without being limited to a color cathode ray tube. It is needless to say that the present invention can also be applied, and various other modifications and applications are possible.

[0048]

According to the present invention, the horizontal deflection coil has a truncated pyramid shape wound in a saddle shape, and the vertical deflection coil has a toroidal winding configuration in which the vertical deflection coil is dividedly wound around a truncated conical core. By combining a yoke or a deflection yoke mounting part for mounting this deflection yoke with a cathode ray tube formed in the shape of a truncated pyramid, the deflection power and manufacturing cost are reduced, and the mass production is reduced. And a cathode ray tube device in which the deflection yoke and the cathode ray tube are combined.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a deflection yoke and a cathode ray tube according to the present invention.

FIG. 2 is a partially cutaway side view showing a color cathode ray tube device in which a deflection yoke is mounted on the cathode ray tube.

FIG. 3 is a cross-sectional view showing a cross section of each part of a cathode ray tube constituting the present invention.

FIG. 4 is a side view showing a deflection yoke constituting the present invention.

FIG. 5 is an exploded perspective view showing the deflection yoke in an exploded manner.

FIG. 6 is an explanatory diagram showing a relationship between a horizontal deflection coil and a core of the deflection yoke.

FIG. 7 is an explanatory diagram showing a dimensional relationship between a horizontal deflection coil and a core of the deflection yoke.

FIG. 8 is an explanatory diagram showing a winding distribution of each coil of the deflection yoke.

FIG. 9 is a distribution diagram showing a distribution of windings of a horizontal deflection coil of the deflection yoke in comparison with a conventional one.

FIG. 10 is a distribution diagram showing a distribution of windings of a vertical deflection coil of the deflection yoke in comparison with a conventional one.

FIG. 11 is a sectional view showing a conventional color cathode ray tube.

FIG. 12 is an exploded perspective view showing a conventional deflection yoke.

[Explanation of symbols]

 11: face panel 12: funnel 13: neck portion 14: phosphor screen 18B, 18G, 18R: electron beam 19: electron gun 20: deflection yoke mounting portion 21: deflection yoke 23: horizontal deflection coil 24: coil separator 33: core 35: Vertical deflection coil

 ────────────────────────────────────────────────── ─── Continuing from the front page (72) Inventor Masayo Inoue 1-9-2 Hara-cho, Fukaya-shi, Saitama F-term in Fukaya Plant, Toshiba Corporation (reference) 5C042 AA07 FF02 FF05 FG13 FG29 FG29 FH10

Claims (6)

[Claims] 1. A horizontal and vertical deflection coil disposed in a deflection yoke mounting portion from a neck portion of a cathode ray tube to an outer periphery of a funnel portion, and deflects an electron beam to reproduce and display an image on a phosphor screen of the cathode ray tube. And a pair of truncated pyramids disposed on the inner surface of the coil separator, the coil separator being formed in a truncated pyramid shape so as to expand from the neck portion side to the funnel side. A deflection system comprising: a saddle-shaped horizontal deflection coil; a truncated conical core disposed on the outer surface of the coil separator; and a pair of vertical deflection coils wound toroidally around the core. yoke. 2. The deflection yoke according to claim 1, wherein the vertical deflection coil is wound so as to form a plurality of winding groups. 3. The horizontal deflection coil has a front side winding distribution around 0 to 35 °, and the vertical deflection coil has at least 20 to 40 °, 60 ° when the horizontal axis is 0 °.
The winding is wound so that the winding distribution is located at about 80 to 90 degrees and 80 to 90 degrees.
A deflection yoke as described. 4. A substantially rectangular face panel, a funnel-shaped funnel connected to the face panel, a neck connected to the small-diameter portion of the funnel, and the neck and the funnel. A truncated pyramid-shaped deflection yoke mounting portion formed at the connection portion, an electron gun disposed in the neck portion for emitting an electron beam, and a phosphor screen formed on the inner surface of the face panel facing the electron gun. A cathode ray tube, and a deflection yoke attached to the deflection yoke attachment portion of the cathode ray tube, wherein the deflection yoke is formed in a truncated pyramid shape so as to expand from a neck portion side to a funnel side. A coil separator; a pair of truncated pyramid-shaped saddle-shaped horizontal deflection coils disposed on the inner side surface of the coil separator; A cathode ray tube device comprising: a truncated conical core disposed on a side surface; and a pair of toroidal vertical deflection coils wound around the core. 5. The cathode ray tube device according to claim 4, wherein said vertical deflection coil is wound so as to form a plurality of winding groups. 6. The horizontal deflection coil has a winding distribution on the front side of about 0 to 35 °, and the vertical deflection coil has a horizontal axis of 0 °, at least 20 to 40 °, 60 ° or less.
The winding is wound so that the winding distribution is located at around 80 to 90 and 80 to 90.
The cathode ray tube device according to the above.