JP3642109B2 - Deflection yoke - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a deflection yoke combined with a cathode ray tube used in a television receiver or the like.
[0002]
[Prior art]
A conventional deflection yoke will be described below with reference to the drawings. FIG. 8 shows a half-cut side view of a conventional deflection yoke. In FIG. 8, 1 is a pair of cores having a funnel shape, 2 is a pair of vertical deflection coils provided inside the core 1 and having a saddle-shaped contour shape, and 3 is a saddle type provided inside the vertical deflection coil 2. A pair of horizontal deflection coils 4 formed in a contour shape is an insulating frame that electrically insulates the vertical deflection coil 2 and the horizontal deflection coil 3 from each other.
[0003]
The operation of the conventional deflection yoke configured as described above will be described. A sawtooth wave current is passed through each of the vertical deflection coil 2 and the horizontal deflection coil 3, and the electron beam is deflected by a deflection magnetic field generated by the current.
[0004]
[Problems to be solved by the invention]
In such a deflection yoke, an increase in the amount of horizontal deflection current flowing through the horizontal deflection coil 3 and an increase in the frequency of the horizontal deflection voltage are performed in accordance with demands for larger screens and higher resolution. Along with this, there is a problem that the temperature of the deflection yoke rises due to an increase in the amount of heat generated by the horizontal deflection coil 3, thereby reducing the life of the deflection yoke and circuit components and lowering the reliability.
[0005]
An object of the present invention is to provide a deflection yoke in which heat generation between deflection coils is suppressed and reliability is improved.
[0006]
[Means for Solving the Problems]
In order to solve this problem, the present invention provides a pair of vertical deflection coils composed of two longitudinal portions, a small arc-shaped coupling portion, and a large arc-shaped coupling portion, two longitudinal portions, a small arc-shaped coupling portion, and a large arc-shaped coupling portion. The vertical deflection coil and the horizontal deflection coil are arranged so that their lengths in the tube axis direction are substantially equal and are shifted by 5 to 15 mm in the tube axis direction.
[0007]
According to the present invention, it is possible to obtain a deflection yoke in which heat generation between the deflection coils is suppressed and reliability is improved.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
According to the first aspect of the present invention, a pair of vertical deflection coils each composed of two longitudinal portions, a small arc-shaped connection portion, and a large arc-shaped connection portion, and an insulating frame is disposed inside the vertical deflection coil. And a pair of horizontal deflection coils each composed of two longitudinal portions, a small arc-shaped coupling portion, and a large arc-shaped coupling portion, and the vertical deflection coil and the horizontal deflection coil have substantially the same length in the tube axis direction and 5 to 5 in the tube axis direction. It is arranged by being shifted by 15 mm, and has effects of reducing eddy current loss generated between the deflection coils and reducing heat generation between the deflection coils.
[0009]
According to the second aspect of the present invention, a pair of vertical deflection coils each composed of two longitudinal portions, a small arc-shaped coupling portion, and a large arc-shaped coupling portion, and two insulating layers disposed inside the vertical deflection coil are provided. It has a pair of horizontal deflection coils composed of a longitudinal part, a small arc connection part and a large arc connection part, and the large arc connection part of the vertical deflection coil and the large arc connection part of the horizontal deflection coil are 5 to 15 mm in the tube axis direction. The eddy current loss generated between the large arc-shaped connecting portions is reduced, and the heat generation between the deflection coils is reduced.
[0010]
According to a third aspect of the present invention, a pair of vertical deflection coils each composed of two longitudinal portions, a small arc-shaped coupling portion, and a large arc-shaped coupling portion; A pair of horizontal deflection coils each composed of a longitudinal portion, a small arc-shaped coupling portion, and a large arc-shaped coupling portion are provided. The small arc-shaped coupling portion of the vertical deflection coil and the small arc-shaped coupling portion of the horizontal deflection coil are 5 to 15 mm in the tube axis direction. The eddy current loss generated between the small arc-shaped connecting portions is reduced, and the heat generation between the deflection coils is reduced.
[0013]
Hereinafter, embodiments of the present invention will be described with reference to FIGS.
(Embodiment 1)
1 is a half side view showing a deflection yoke according to Embodiment 1 of the present invention, FIG. 2A is a perspective view showing formation of a vertical deflection coil of the deflection yoke according to Embodiment 1 of the present invention, and FIG. ) Is a perspective view showing formation of a horizontal deflection coil of the deflection yoke according to the first embodiment of the present invention. FIG. In FIGS. 1, 2A and 2B, 5 is a pair of cores having a funnel shape, 6 is a pair of vertical deflection coils provided inside the core 5, and two longitudinal portions 7 and It is composed of a small arc connecting portion 8 and a large arc connecting portion 9. An insulating frame 10 is provided inside the vertical deflection coil 6 to electrically insulate between the vertical deflection coil 6 and a horizontal deflection coil 11 described later, and 11 is a pair of horizontal deflections provided inside the insulating frame 10. It is a coil, and is composed of two longitudinal portions 12, a small arc-shaped connecting portion 13, and a large arc-shaped connecting portion 14. Reference numeral 15 denotes a neck side when attached to the cathode ray tube, and reference numeral 16 denotes a screen side when attached to the cathode ray tube.
[0014]
The formation of the vertical deflection coil 6 and the horizontal deflection coil 11 of the deflection yoke configured as described above will be described below. As shown in FIG. 2A, a single wire or a plurality of conducting wires are bent from the small arc-shaped connecting portion 8 and guided in the direction of one arrow 17 of the longitudinal portion 7 to form one of the longitudinal portions 7, and then the longitudinal portion 7 The lead wire is bent at the end of the large arc-shaped connecting portion 9, the lead wire is bent at the end of the large arc-shaped connecting portion 9 and guided to the other longitudinal portion 7 toward the small arc-shaped connecting portion 8. A longitudinal portion 7 is formed, and a conducting wire is bent at an end portion of the longitudinal portion 7 to form a small arc-shaped connecting portion 8. This is repeatedly wound to form one vertical deflection coil 6. At this time, the radial thickness of the small arc-shaped connecting portion 8 is formed to be substantially equal to the thickness of the net side 15 of the longitudinal portion 7 in the radial direction.
[0015]
In the horizontal deflection coil 11 shown in FIG. 2B, the horizontal deflection coil 11 can be formed by winding in the same manner as the vertical deflection coil 6 shown in FIG. At this time, the radial thickness of the small arc-shaped connecting portion 13 of the horizontal deflection coil 11 is formed to be substantially equal to the thickness of the net side 15 of the longitudinal portion 12 in the radial direction. The vertical deflection coil 6 and the horizontal deflection coil are set so that the radial thickness of the small arc-shaped connecting portion 8 and the radial thickness of the small arc-shaped connecting portion 13 are equal to the radial thicknesses of the respective longitudinal portions 7 and 12. This is because 11 can be shifted in the tube axis direction. The vertical deflection coil 6 and the horizontal deflection coil 11 are formed to have substantially the same length in the tube axis direction.
[0016]
Therefore, the large arc-shaped connecting portion 9 of the vertical deflection coil 6 and the large arc-shaped connecting portion 14 of the horizontal deflection coil 11 are disposed at an interval of 5 to 20 mm in the tube axis direction. 8 and the small arc-shaped connecting portion 13 of the horizontal deflection coil 11 are disposed at an interval of 5 to 15 mm in the tube axis direction.
[0017]
Next, the operation of the deflection yoke configured as described above will be described. A sawtooth wave current is passed through each of the vertical deflection coil 6 and the horizontal deflection coil 11, and the electron beam is deflected by a deflection magnetic field generated by the current. The vertical deflection coil 6 and the horizontal deflection coil 11 generate heat due to the horizontal deflection current and the eddy current due to the magnetic field at this time, and the temperature of the deflection yoke rises depending on the amount of generated heat.
[0018]
By the way, in the first embodiment of the present invention, the large arc-shaped connecting portion between the vertical deflection coil 6 and the horizontal deflection coil 11 is disposed at an interval of 5 to 15 mm in the tube axis direction. And a small arc-shaped connecting portion of the horizontal deflection coil 11 are arranged at an interval of 5 to 15 mm in the tube axis direction. By adopting such a configuration, an eddy current loss caused by a magnetic field excited by a high-frequency horizontal deflection current can be reduced between the large arc-shaped coupling portions of the horizontal deflection coil 11 and the vertical deflection coil 6. . Further, eddy current loss can be reduced between the small arc-shaped connecting portions of the horizontal deflection coil 11 and the vertical deflection coil 6. In this way, the heat generation of the deflection coil is suppressed. Furthermore, heat can be radiated from the large arc-shaped connecting portion 14 and the small arc-shaped connecting portion 13 of the horizontal deflection coil 11 to reduce the temperature rise of the deflection yoke.
[0019]
Therefore, based on FIGS. 3 and 4, the large arc-shaped connecting portion 9 of the vertical deflection coil 6 and the large arc-shaped connecting portion 14 of the horizontal deflection coil 11 are arranged with a gap of 2 to 20 mm in the tube axis direction so as to be vertically deflected. A configuration in which the small arc-shaped connecting portion 8 of the coil 6 and the small arc-shaped connecting portion 13 of the horizontal deflection coil 11 are disposed with a gap of 2 to 20 mm in the tube axis direction will be described in detail below.
[0020]
In order to investigate the temperature rise during operation of the deflection yoke of the present invention, the following test was conducted. FIG. 3 is a diagram showing the relationship between the temperature rise and the distance between the large arc-shaped connecting portions of the vertical deflection coil and horizontal deflection coil of the deflection yoke according to Embodiment 1 of the present invention. In FIG. 3, the vertical axis indicates the temperature rise ΔT (° C.), and the horizontal axis indicates the interval (mm) in the tube axis direction between the large arc-shaped connecting portions. 18 is a curve showing a temperature rise in the center of the longitudinal portion 12 indicating the maximum temperature position between the longitudinal portion 12 of the horizontal deflection coil 11 and the insulating frame 10 by a solid white circle, and 19 is a large arc connecting portion of the horizontal deflection coil 11. 14 is a curve showing the temperature rise at the center position of 14 by dotted black dots. In order to test the temperature rise of the deflection yoke, the interval was changed between 2 and 20 mm in the tube axis direction between the large arc-shaped connecting portions of the vertical deflection coil 6 and the horizontal deflection coil 11. At this time, a distance of 2 mm between the small arc-shaped connecting portions of the horizontal deflection coil 11 and the vertical deflection coil 6 was made constant in the tube axis direction.
[0021]
FIG. 4 is a diagram showing the relationship between the temperature rise and the distance between the small arcuate connecting portions of the vertical deflection coil and horizontal deflection coil of the deflection yoke according to Embodiment 1 of the present invention. In FIG. 4, the vertical axis indicates the temperature rise ΔT (° C.), and the horizontal axis indicates the interval (mm) in the tube axis direction between the small arc-shaped connecting portions. 20 is a curve showing the temperature rise at the central portion of the longitudinal portion 12 indicating the maximum temperature position between the longitudinal portion 12 of the horizontal deflection coil 11 and the insulating frame 10 by a solid white triangle mark, and 21 is a small arc connection of the horizontal deflection coil 11. It is a curve which shows the temperature rise of the center part position of the part 13 with a dotted-line black triangle mark. In order to test the temperature rise of the deflection yoke, the interval was changed between 2 and 20 mm in the tube axis direction between the small arc-shaped connecting portions of the vertical deflection coil 6 and the horizontal deflection coil 11. At this time, a distance of 2 mm between the large arc-shaped connecting portions of the horizontal deflection coil 11 and the vertical deflection coil 6 was made constant in the tube axis direction. This is because the insulating frame 10 has a thickness of 2 mm. 3 and 4, a thermocouple was inserted into each measurement position, and when the deflection yoke was operated for 4 hours, the temperature difference between the measurement position and room temperature was examined as a temperature rise ΔT. .
[0022]
As shown in FIG. 3, when the large arc-shaped connecting portions of the vertical deflection coil 6 and the horizontal deflection coil 11 are arranged at a distance of 2 to 20 mm in the tube axis direction, the temperature at the central portion of the highest temperature position of the deflection yoke is set. The increase ΔT becomes substantially constant at 40 ° C. when the interval in the tube axis direction is 5 to 20 mm as shown by the curve 18. Further, the temperature rise ΔT at the central portion of the large arc connecting portion 14 of the horizontal deflection coil 11 becomes substantially constant at 32 ° C. when the interval in the tube axis direction is 5 to 20 mm as shown by the curve 19. This is because the loss of eddy current generated between the large arc-shaped joints is reduced by the magnetic field excited by the horizontal deflection current. However, when the interval in the tube axis direction between the large arc-shaped connecting portions is reduced to 4 mm and 2 mm, the temperature rise ΔT increases as the interval becomes smaller than 4 mm. This is presumably because the loss due to the eddy current increases between the large arc-shaped connecting portions due to the magnetic field excited by the horizontal deflection current. Accordingly, when the distance between the large arc-shaped connecting portions in the tube axis direction is 5 mm or less, the amount of heat generated by the deflection coil increases, and the temperature of the deflection yoke is increased.
[0023]
As shown in FIG. 4, when the small arc-shaped coupling portions of the vertical deflection coil 6 and the horizontal deflection coil 11 are arranged at a distance of 2 to 20 mm in the tube axis direction, the temperature at the central portion of the highest temperature position of the deflection yoke is set. The increase ΔT becomes substantially constant at 43 ° C. when the interval in the tube axis direction is 5 to 20 mm as shown by the curve 20. Further, the temperature rise ΔT at the center position of the small arc-shaped connecting portion 13 of the horizontal deflection coil 11 becomes substantially constant at 35 ° C. when the interval in the tube axis direction is 5 to 20 mm as shown by the curve 21. However, when the interval in the tube axis direction between the small arc-shaped connecting portions is reduced to 4 mm and 2 mm, the temperature increase ΔT increases as the interval becomes smaller than 4 mm. This is because the loss due to the eddy current increases between the small arc-shaped coupling portions due to the magnetic field excited by the horizontal deflection current. Therefore, if the distance between the small arc-shaped connecting portions in the tube axis direction is 5 mm or less, the amount of heat generated by the deflection coil increases, and the temperature of the deflection yoke is increased.
[0024]
In this way, when the distance between the large arc-shaped connecting portions of the vertical deflection coil 6 and the horizontal deflection coil 11 is 5 to 20 mm in the tube axis direction, the temperature rise of the deflection yoke can be reduced. The same can be said when the distance between the small arc-shaped connecting portions in the tube axis direction is 5 to 20 mm. The difference between the temperature rise 40T of the curve 18 of the temperature rise ΔT and the temperature of 43 ° C. of the curve 20 is the difference between the eddy currents between the large arc-shaped connecting portions and the eddy currents between the small arc-shaped connecting portions. This shows that the influence of eddy current loss is large.
[0025]
By the way, if the large arc-shaped connecting portion between the vertical deflection coil 6 and the horizontal deflection coil 11 is disposed at an interval of 15 mm or more in the tube axis direction, raster distortion and deflection efficiency which are main elements are reduced, and the performance of the deflection yoke is reduced. Reduce. Therefore, it is not preferable to set an interval of 15 mm or more in the tube axis direction. Similarly, if the small arc-shaped connecting portions are arranged at intervals of 15 mm or more in the tube axis direction, the raster distortion and the deflection efficiency are lowered, and the performance of the deflection yoke is lowered.
[0026]
As described above, according to the first embodiment of the present invention, when the large arc-shaped coupling portion between the vertical deflection coil 6 and the horizontal deflection coil 11 is disposed at an interval of 5 to 15 mm in the tube axis direction, the large arc-shaped coupling portion. The loss of eddy current generated between them is reduced, and the heat generation of the deflection yoke is suppressed. Further, since heat is radiated from the small arc connecting portion 13 and the large arc connecting portion 14 of the horizontal deflection coil 11, the temperature rise of the deflection yoke is suppressed, and the deflection yoke operates efficiently to improve reliability. Can do. Further, when the small arc-shaped connecting portions are arranged with an interval of 5 to 15 mm in the tube axis direction, substantially the same effect as that between the large arc-shaped connecting portions can be obtained.
[0027]
By the way, although it demonstrated separately that the space | interval between large arc-shaped connection parts was 5-15 mm and the space | interval between small arc-shaped connection parts was 5-15 mm, the pipe-axis length between large arc-shaped connection parts and between small arc-shaped connection parts is substantially shown. In the case of equal formation, if the vertical deflection coil 6 and the horizontal deflection coil 11 are shifted by 5 to 15 mm, the above effects can be expected at the same time, and only one of them is more effective.
[0028]
In the first embodiment of the present invention, as shown in FIG. 1, the small arc-shaped connecting portion 13 of the horizontal deflection coil 11 protrudes from the small arc-shaped connecting portion 8 of the vertical deflection coil 6 on the neck side 15 in the tube axis direction. However, it may be as shown in FIG. FIG. 5 is a partial side view showing the positional relationship between the small arc-shaped connecting portion of the vertical deflection coil and the small arc-shaped connecting portion of the horizontal deflection coil according to the first embodiment of the present invention. In FIG. 5, the positional relationship between the small arc-shaped coupling portion 8 of the vertical deflection coil 6 and the small arc-shaped coupling portion 13 of the horizontal deflection coil 11 is such that the small arc-shaped coupling portion 8 of the vertical deflection coil 6 is horizontal to the neck side 15 in the tube axis direction. It protrudes from the small arc-shaped connecting portion 13 of the deflection coil 11. If the small arc-shaped connecting portions of the vertical deflection coil 6 and the horizontal deflection coil 11 are arranged with an interval of 5 to 15 mm in the tube axis direction, substantially the same effect is obtained as in the case shown in FIG. It is what
[0029]
(Embodiment 2)
6A is a perspective view showing a vertical deflection coil having a saddle-shaped contour shape of a deflection yoke according to the second embodiment of the present invention, and FIG. 6B is a saddle-shaped contour of the deflection yoke according to the second embodiment of the present invention. It is a perspective view which shows the horizontal deflection coil of a shape. 6 (a) and 6 (b), reference numeral 22 denotes a vertical deflection coil having a saddle-shaped contour shape, which includes two longitudinal portions 23, a small arc-shaped connecting portion 24, and a large arc-shaped connecting portion 25. Reference numeral 26 denotes a horizontal deflection coil having a saddle-shaped contour shape, which includes two longitudinal portions 27, a small arc-shaped connection portion 28, and a large arc-shaped connection portion 29.
[0030]
In Embodiment 1 of the present invention, the radial thickness of the small arc-shaped connecting portion 8 of the vertical deflection coil 6 is formed to be substantially equal to the radial thickness of the longitudinal portion 7, and the horizontal deflection coil 11 is small. Although the radial thickness of the arc-shaped connecting portion 13 is substantially equal to the radial thickness of the longitudinal portion 12, as shown in FIGS. 6 (a) and 6 (b), the vertical deflection coil 22 and the horizontal deflection coil 26 are formed. The shape may be formed into a saddle-shaped contour shape. If the large arc-shaped connecting portion 25 of the vertical deflection coil 22 and the large arc-shaped connecting portion 29 of the horizontal deflection coil 26 are arranged at intervals of 5 to 15 mm in the tube axis direction, the same effect as in the first embodiment is obtained. It is obtained.
[0031]
( Related form )
FIG. 7 is a half-cut side view showing a deflection yoke according to a related embodiment of the present invention. In FIG. 7, the same reference numerals as those in the second embodiment are basically the same. In FIG. 7, 26 is a horizontal deflection coil, 30 is a pair of funnel-shaped cores, 31 is a vertical deflection coil wound around the core 30, and includes a neck side end portion 32 and a screen side end portion 33. Yes. An insulating frame 34 electrically insulates the vertical deflection coil 31 and the horizontal deflection coil 26 from each other.
[0032]
In the related configuration configured as described above, as shown in FIG. 7, the neck side end portion 32 of the vertical deflection coil 31 and the small arc-shaped connecting portion 28 of the horizontal deflection coil 26 are spaced by 5 to 15 mm in the tube axis direction. Arranged. Further, the screen-side end portion 33 of the vertical deflection coil 31 and the large arc-shaped connecting portion 29 of the horizontal deflection coil 26 are arranged at an interval of 5 to 15 mm in the tube axis direction.
[0033]
As described above, in the related embodiment of the present invention, when the screen-side end portion 33 of the vertical deflection coil 31 and the large arc-shaped connection portion 29 of the horizontal deflection coil 26 are arranged at intervals of 5 to 15 mm in the tube axis direction, Although not, a curve of the temperature rise ΔT that is substantially the same as in FIG. 3 of the first embodiment is obtained. And the eddy current loss which arises between the screen side edge part 33 of the vertical deflection coil 31 and the large arc-shaped connection part 29 of the horizontal deflection coil 26 is reduced, and the heat generation of the deflection coil is suppressed. Further, when the neck side end portion 32 of the vertical deflection coil 31 and the small arc-shaped connecting portion 28 of the horizontal deflection coil 26 are arranged at an interval of 5 to 15 mm in the tube axis direction, although not shown, the diagram of the first embodiment. A curve of the temperature rise ΔT substantially similar to 4 is obtained. And the eddy current loss which arises between the neck side edge part 32 of the vertical deflection coil 31 and the small arc-shaped connection part 28 of the horizontal deflection coil 26 is reduced, and the heat generation of the deflection coil is suppressed.
[0034]
Similarly to the first embodiment, when the screen side end portion 33 of the vertical deflection coil 31 and the large arc-shaped connecting portion 29 of the horizontal deflection coil 26 are arranged at intervals of 15 mm or more in the tube axis direction, the raster distortion which is the main element. And the deflection efficiency is lowered, and the performance of the deflection yoke is lowered. Further, when the neck side end portion 32 of the vertical deflection coil 31 and the small arc-shaped connection portion 28 of the horizontal deflection coil 26 are arranged at intervals of 15 mm or more in the tube axis direction, the raster distortion and the deflection efficiency which are main elements are reduced, The performance of the deflection yoke is lowered.
[0035]
Thus, in the related form of the present invention, the neck side end portion 32 of the vertical deflection coil 31 and the small arc-shaped connecting portion 28 of the horizontal deflection coil 26 are arranged at intervals of 5 to 15 mm in the tube axis direction. Eddy current loss can be reduced and heat generation between the deflection coils can be suppressed. Then, heat is radiated from the large arc-shaped connecting portion 29 and the small arc-shaped connecting portion 28 of the horizontal deflection coil 26, and the temperature rise of the deflection yoke can be reduced.
[0036]
Further, since the screen side end 33 of the vertical deflection coil 31 and the large arc-shaped connecting portion 29 of the horizontal deflection coil 26 are arranged at intervals of 5 to 15 mm in the tube axis direction, eddy current loss is reduced and deflection is performed. Heat generation between the coils can be suppressed. Then, heat is radiated from the large arc-shaped connecting portion 29 and the small arc-shaped connecting portion 28 of the horizontal deflection coil 26, and the temperature rise of the deflection yoke can be reduced.
[0037]
In the related embodiment of the present invention, the horizontal deflection coil 26 shown in FIG. 6B of the second embodiment is used. However, the horizontal deflection coil 11 shown in FIG. 2B of the first embodiment is used. Even if it is used, the same effect as in the first embodiment can be obtained.
[0038]
【The invention's effect】
As described above, according to the present invention, since the vertical deflection coil and the horizontal deflection coil are shifted by 5 to 15 mm in the tube axis direction, the eddy current loss is reduced and the temperature rise of the deflection yoke is suppressed. Further, since the large arc-shaped connecting portions are arranged at intervals of 5 to 15 mm in the tube axis direction, eddy current loss generated between the large arc-shaped connecting portions is reduced, and the temperature rise of the deflection yoke is suppressed. Further, since the small arc-shaped connecting portions are arranged at intervals of 5 to 15 mm in the tube axis direction, eddy current loss generated between the small arc-shaped connecting portions is reduced, and the temperature rise of the deflection yoke is suppressed.
[Brief description of the drawings]
FIG. 1 is a half-cut side view showing a deflection yoke according to Embodiment 1 of the present invention. FIG. 2 (a) is a perspective view showing formation of a vertical deflection coil of the deflection yoke according to Embodiment 1 of the present invention. FIG. 3 is a perspective view showing formation of a horizontal deflection coil of a deflection yoke according to the first embodiment of the present invention. FIG. 3 shows a tube axis between a vertical deflection coil of the deflection yoke and a large arc-shaped connecting portion of the horizontal deflection coil according to the first embodiment of the present invention. FIG. 4 is a diagram showing the relationship between the gap shifted in the direction and the temperature rise. FIG. 4 is a gap shifted in the tube axis direction between the small arc-shaped connecting portions of the vertical deflection coil and the horizontal deflection coil of the deflection yoke according to the first embodiment of the present invention. FIG. 5 is a partial side view showing the positional relationship between a small arc-shaped connecting portion of a vertical deflection coil and a small arc-shaped connecting portion of a horizontal deflection coil according to Embodiment 1 of the present invention. FIG. 6 (a) Implementation of the present invention FIG. 7 is a perspective view showing a vertical deflection coil having a saddle-shaped outline of a deflection yoke according to a second embodiment. [FIG. 8] A half side view of a deflection yoke according to a related embodiment of the present invention.
5,30 Core 6,22,31 Vertical deflection coil 7,12,23,27 Longitudinal part 8,13,24,28 Small arc-shaped connecting part 9,14,25,29 Large arc-shaped connecting part 10,34 Insulating frame 11, 26 Horizontal deflection coil 15 Neck side 16 Screen side 17 Arrow 18, 19, 20, 21 Curve 32 Neck side end 33 Screen side end

Claims (3)

A pair of vertical deflection coils composed of two longitudinal portions, a small arc-shaped coupling portion and a large arc-shaped coupling portion; and two longitudinal portions and a small arc-shaped coupling portion which are disposed inside the vertical deflection coil via an insulating frame; A pair of horizontal deflection coils each composed of a large arc-shaped connecting portion are provided, and the vertical deflection coil and the horizontal deflection coil are substantially equal in length in the tube axis direction and are shifted by 5 to 15 mm in the tube axis direction. A deflection yoke. A pair of vertical deflection coils composed of two longitudinal portions, a small arc-shaped coupling portion and a large arc-shaped coupling portion; and two longitudinal portions and a small arc-shaped coupling portion which are disposed inside the vertical deflection coil via an insulating frame; A pair of horizontal deflection coils each composed of a large arc-shaped coupling portion is provided, and the large arc-shaped coupling portion of the vertical deflection coil and the large arc-shaped coupling portion of the horizontal deflection coil are arranged at an interval of 5 to 15 mm in the tube axis direction. A deflection yoke characterized by being provided. A pair of vertical deflection coils composed of two longitudinal portions, a small arc-shaped coupling portion and a large arc-shaped coupling portion; and two longitudinal portions and a small arc-shaped coupling portion which are disposed inside the vertical deflection coil via an insulating frame; A pair of horizontal deflection coils each composed of a large arc-shaped coupling portion is provided, and the small arc-shaped coupling portion of the vertical deflection coil and the small arc-shaped coupling portion of the horizontal deflection coil are arranged at an interval of 5 to 15 mm in the tube axis direction. A deflection yoke characterized by being provided.

Images