CN1959913A - Color CRT - Google Patents
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- CN1959913A CN1959913A CN 200510118612 CN200510118612A CN1959913A CN 1959913 A CN1959913 A CN 1959913A CN 200510118612 CN200510118612 CN 200510118612 CN 200510118612 A CN200510118612 A CN 200510118612A CN 1959913 A CN1959913 A CN 1959913A
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- dividing plate
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Abstract
Using metal tape and metal screw fixes up insulated frame of deflecting yoke on glass cone. Clapboard integrated to the fastener in use for holding magnetic loop of CPU includes following parts: being setup at first axis, the first clapboard shields metal screw when deflecting yoke is viewed from the fastener along tube axis; second clapboard on the second axis perpendicular to the first axis. Height of the first clapboard is H1, and height of the second axis is H2. Minimum height of clapboard is Hmin. Height of knob part of magnetic loop located at side nearest to the deflecting yoke. Diameter of circumferential boundary of the magnetic loop except the knob part is RM. Following relations are satisfied: H1>H2,HM-H2>10mm,and Hmin>RM. Being able to prevent discharge between metal strips, screws in use for fixing the deflecting yoke and velocity modulation coil, the invention does not lower operability of rotation adjustment for magnetic loop of CPU.
Description
Technical field
The present invention relates to a kind of color cathode-ray tube apparatus.
Background technology
Color cathode-ray tube apparatus comprises color cathode ray tube, and wherein, electron gun is included in the shell that is interconnected to constitute by panel and glass awl, and deflection yoke is provided on the outer surface of glass awl.Be deflected yoke deflection in the horizontal and vertical directions from three electron beams of electron gun emission, and scanning is formed on the phosphor screen on the panel inner surface.
This deflection yoke comprises horizontal deflection coil that produces horizontal deflection magnetic field and the frame deflector coil that produces vertical deflection magnetic field, and is provided in the insulation frame between horizontal deflection coil and the frame deflector coil.This insulation frame is kept the electric insulating state between horizontal deflection coil and the frame deflector coil, and is used to keep this two deflecting coils.On the outer surface of cylindrical part basically of the electron gun side of this insulation frame, the metal tape of Ω shape basically is installed, the two ends of this metal tape are tightened together by metallic screw, thus deflection yoke is fixed on the glass awl.
In such color cathode-ray tube apparatus,, used speed modulation coil in order to improve image outline to realize high image quality.This speed modulation coil is made up of a pair of annulus, and this is attached on the position with respect to the electron gun side of deflection yoke of glass awl annulus, and in vertical direction toward each other.Allow this speed modulation coil to produce a vertical direction magnetic field, be used for the horizontal sweep speed of modulated electron beam, (for example, see JP 57 (1982)-45650Y, JP 6 (1994)-283113A) thereby image outline is improved.
In addition, on tube axial direction, convergence and colour purity unit (CPU, convergence andpurity unit) are set at the position that overlaps with speed modulation coil.This CPU is used to keep the cylindrical fixture of these magnet rings to form by two utmost points, four utmost points and sextupole magnet ring and the neck outside that is provided in glass awl.Each two utmost point, four utmost points and sextupole magnet ring all have the structure of the magnet coincidence of two annulars.By adjusting the anglec of rotation around each magnet ring tubular axis, the static convergence and the colour purity of electron beam are optimized.
Conductive film is used in the position that deflection yoke is set on the inner wall surface of glass awl, and applies high voltage by the anode contact to this conductive film.Therefore, when the power supply of color cathode-ray tube apparatus is switched to ON/OFF, the metal tape of the above-mentioned shape of Ω basically of fixed deflection yoke and metallic screw are by the conductive film charging that is applied in above-mentioned high pressure, the insulation frame of glass awl and deflection yoke insulate, and may occur to the discharge (sparking) that is positioned near the speed modulation coil metal tape and the metallic screw.This discharge damages the circuit of actuating speed modulation coil.
In order to prevent above-mentioned discharge, for example consider a kind of method, thereby make the metal tape ground connection of the shape of Ω basically of said fixing deflection yoke disperse electric charge by a lead-in wire.Yet, according to this method, must connect lead-in wire, increase component count and operating time, thereby caused the rising of cost.
In addition, consider to increase the metal tape and the distance of speed modulation coil on tube axial direction of fixed deflection yoke, to reduce the possibility that discharge takes place.Yet according to this method, the size of color cathode-ray tube apparatus on tube axial direction increases.In addition, consider improvement picture quality usually, the tube axial direction position of the phosphor screen side of speed modulation coil is approached phosphor screen as far as possible and is considered to favourable, so said method contradiction with it.
Japanese Utility Model registration No.3097458 has described a kind of detachable dish type barrier, and it is provided in the fixture place of CPU between metal tape and speed modulation coil.Japanese Utility Model registration No.3097458 has described following content: this barrier stops and takes the formation of the discharge path of speed modulation coil to from metal, thereby prevents the generation of discharging.In addition, Japanese Utility Model registration No.3097458 has described following content: by this barrier being arranged to the fixture separated components with CPU, this barrier can be formed by electroconductive resin with low insulation resistance or metal; And then, can further reduce discharge.
Yet the barrier shown in the Japanese Utility Model registration No.3097458 can not prevent the generation of discharging fully.Be explained with reference to figure 7.
Fig. 7 shows the vertical cross-section view of the CPU structure on every side on the neck that is installed in color cathode-ray tube apparatus.This structure is basically about the tubular axis symmetry, so only show a side of tubular axis among Fig. 7.The tubular axis of reference number 110 expression color cathode ray tubes, the neck of 120 expression glass awls, 130 expressions are installed in the deflection yoke on the glass awl outer surface, the insulation frame of 135 expression deflection yokes 130,137 expressions are fixed on metal tape on the neck 120 with the insulation frame 135 of deflection yoke 130,140 expressions constitute the annular magnet ring of CPU, 145 expressions keep the cylindrical fixture of magnet ring 140,150 expressions are assemblied in the speed modulation coil among groove 148a, the 148b of fixture 145, and the barrier of 170 expressions and the groove 148a interlock of fixture 145.The metallic screw at fastening metal band 137 two ends is not shown.
In said structure, the quantity of electric charge of accumulation will form discharge path above certain value in deflection yoke 130, this discharge path extends to speed modulation coil 150 the groove 148a from metal tape 137, pass through the outer surface of neck 120 successively, part between the interior perimeter surface of neck 120 and barrier 170, and the part between barrier 170 and the fixture 145.Therefore,, between metal tape 137 and speed modulation coil 150, also can form discharge path, make to prevent the generation of discharging fully with relatively short creepage distance even between metal tape 137 and speed modulation coil 150, barrier 170 is set.
In addition, on watching screen, in the image of actual displayed, carry out of the adjusting operation of the magnet ring 140 of CPU around the position of rotation of tubular axis.Therefore, under the situation of the barrier 170 that is provided for preventing discharge between metal tape 137 and the speed modulation coil 150, should take care not damage the operability that the rotation of the magnet ring 140 of the CPU that is positioned at fluoroscopic opposite side with respect to barrier 170 is regulated.
Summary of the invention
Therefore, consider the above, an object of the present invention is to provide a kind of color cathode-ray tube apparatus, it can prevent to discharge between the metal tape of fixed deflection yoke and metallic screw and the speed modulation coil, and does not reduce the operability that the rotation of the magnet ring of CPU is regulated.
Color cathode-ray tube apparatus of the present invention comprises: cathode ray tube, this cathode ray tube are included in and have formed fluoroscopic panel on its inner surface, the glass that is connected with panel awl, and the interior electron gun of neck that is included in the glass awl; Be arranged on the deflection yoke on the glass awl outer surface, its in the horizontal direction with the vertical direction upper deflecting from electron gun electrons emitted bundle, make this electron beam scanning phosphor screen; CPU, this CPU comprise and be arranged on the outside columniform basically fixture of glass awl, and many to annular magnet ring, and these are many to be arranged on the holder circumference surface, on tube axial direction position with respect to the electron gun side of deflection yoke to magnet ring; And remain on speed modulation coil on this fixture.
This deflection yoke comprises: the horizontal deflection coil of deflection beam in the horizontal direction, the frame deflector coil of deflection beam in vertical direction, guarantee the insulation frame that insulate between horizontal deflection coil and the frame deflector coil, the column part that is arranged on the fixture side of insulation frame is fixed on the metal tape that glass is bored, and the metallic screw at fastening metal band two ends.
This fixture is included in a dividing plate that the position is vertical with tubular axis with respect to the deflection yoke side of speed modulation coil.This dividing plate and fixture form with being combined into one, and metallic screw is positioned on first vertical with tubular axis.
This dividing plate comprises: first dividing plate, and it is arranged on described first, makes that this first dividing plate covers metallic screw when observing deflection yoke from the fixture side along tubular axis; And second partition, its be arranged on described first vertical with tubular axis second on, and suppose that first dividing plate is H with respect to the height of tubular axis
1, second partition is H with respect to the height of tubular axis
2, described dividing plate is H with respect to the minimum constructive height of tubular axis
Min, described many to be positioned in the magnet ring with deflection yoke near a pair of first magnet ring of a side, to be used to carry out around the knob portion of the rotary manipulation of tubular axis be H with respect to the height of tubular axis
M, and be R from tubular axis to this distance to the outer perimeter of the part except that knob portion of first magnet ring
M, satisfy relation: H
1＞H
2, H
M-H
2＞10mm, H
Min＞R
M
Description of drawings
Fig. 1 is the partial cross sectional view of the schematic structure of color cathode-ray tube apparatus according to an embodiment of the invention;
Fig. 2 is the oblique view of the schematic structure of the electron gun side of the deflection yoke in the color cathode-ray tube apparatus according to an embodiment of the invention;
Fig. 3 A is the decomposition diagram of schematic structure of forming the annular magnet ring of CPU according to an embodiment of the invention in the color cathode-ray tube apparatus, and Fig. 3 B is the front view of magnet ring;
Fig. 4 A is the perspective view of the schematic structure of the speed modulation coil in the color cathode-ray tube apparatus according to an embodiment of the invention, and Fig. 4 B is the expanded view that constitutes the annulus of speed modulation coil;
Fig. 5 A is the end view around the CPU in the color cathode-ray tube apparatus according to an embodiment of the invention, and Fig. 5 B is the cross-sectional view that obtains along the line 5B-5B among Fig. 5 A;
Fig. 6 A is the top view around the dividing plate in the color cathode-ray tube apparatus according to an embodiment of the invention, and Fig. 6 B is along the being seen rearview of arrow 6B among Fig. 6 A;
Fig. 7 illustrates on the fixture of CPU wherein the partial cross sectional view of discharging in the conventional color cathode ray tube of detachable barrier is installed.
Detailed Description Of The Invention
Can provide a kind of color cathode-ray tube apparatus according to the present invention, wherein between the metal tape that is used for fixing deflection yoke and metallic screw and speed modulation coil, be not easy to discharge, and can not damage the operability that the rotation of the magnet ring of CPU is regulated.
Fig. 1 is the partial cross sectional view of the schematic structure of color cathode-ray tube apparatus 1 according to an embodiment of the invention.For ease of the following description, suppose that tubular axis is the Z-axle, the axle on the horizontal direction (long side direction of screen) is the X-axle, the axle on the vertical direction (short side direction of screen) is the Y-axle.The X-axle is vertical mutually on the Z-axle with the Y-axle.Among Fig. 1, show the cross-sectional view of Z-axle upside, and the outside drawing that shows Z-axle downside.
As shown in Figure 1, this color cathode-ray tube apparatus 1 comprises color cathode ray tube 10, deflection yoke 30, CPU 40 and speed modulation coil 50.
Color cathode ray tube 10 comprises: be connected to each other the glass-vacuum tube (shell) that constitutes by panel 11 and glass awl 12, be attached to the shadow mask 15 of panel 11 inboards, be included in the type electron gun in upright arrangement (below be called " electron gun ") 16 of neck 13 inside of glass awl 12.
Formed phosphor screen 14 on the inner surface of panel 11, wherein periodic arrangement each phosphor dot (or phosphor strip) of red, green, blue look.Shadow mask 15 is arranged on respect to phosphor screen 14 substantial constant intervals.A plurality of electron beam through-holes are arranged in the shadow mask 15.Pass the electron beam through-hole in the shadow mask 15 from three electron beams 18 (three electron beams are arranged in the delegation parallel with the X-axle, so only show an electron beam of front side among Fig. 1) of electron gun 16 emissions, with the fluorophor of irradiation expectation.
Fig. 2 is the oblique view of schematic structure of the electron gun side of deflection yoke 30.Insulation frame 35 comprises columniform column part 35a at an end of its electron gun 16 sides.At the end of column part 35a, formed the recess (not shown) of the shape of slit that is arranged essentially parallel to the Z-axle.On the outer surface of column part 35a, " Ω " shape or the metal tape 37 of " C " shape basically are installed basically, and the two ends of metal tape 37 are tightened together by metallic screw 38.By using metallic screw 38 fastening metal bands 37, column part 35a can touch the neck 13 of glass awl 12.As a result, deflection yoke 30 can be fixed on the glass awl 12.The openend of metal tape 37 is positioned at the X-axle with the metallic screw 38 that is used for fastening this openend.
As shown in Figure 1, CPU 40 is arranged on the position that overlaps with electron gun 16 on the outer surface of neck 13 on tube axial direction, and carries out the static convergence adjusting and the colour purity adjusting of electron beam 18.CPU 40 comprise generation two pole fields that set gradually from deflection yoke 30 sides first magnet 41, produce two pole fields second magnet 42, produce the 3rd magnet 43 of quadripolar magnetic field and the 4th magnet 44 that produces sextupole magnetic field.In first to fourth magnet 41,42,43,44 each is made up of a pair of annular magnet ring with identical shaped and structure, and is installed on the cylindrical basically fixture 45 that is arranged at neck 13 outsides.
Fig. 3 A is the decomposition diagram of the schematic structure of first magnet 41.First magnet 41 is made up of annular magnet ring 41a, the 41b shown in Fig. 3 B.Magnet ring 41a, 41b are arranged on the outside of fixture 45 under the state that contacts with each other on the Z-direction of principal axis.Each magnet ring 41a, 41b are included on the outer perimeter from the 41a of knob portion that radial direction stretches out
1, 41b
1By catching the 41a of knob portion
1, 41b
1Rotate corresponding magnet ring 41a, 41b respectively around the Z-axle, can change the direction in the magnetic field of each magnet ring 41a, 41b generation.By optimizing each magnet ring 41a, 41b position of rotation in the image that on watching screen, shows, can obtain desired images around the Z-axle.Fig. 3 A and 3B illustrated first magnet 41.Second to the 4th magnet 42,43,44 also has the face shaping identical with first magnet 41, although the magnetic field that their produce is different from the magnetic field of first magnet 41.
Fig. 4 A is the perspective view of the schematic structure of speed modulation coil 50.This speed modulation coil 50 is made up of coil 50a, the 50b of a pair of ring-type, comprises that the horizontal plane (XZ-face) of Z-axle passes between coil 50a, 50b.This coil 50a, 50b to ring-type is being attached on the fixture 45 of CPU 40 on axisymmetric two positions about Z-basically.More specifically, speed modulation coil 50 integrally is attached on the CPU 40.The consistent electric current of the velocity modulation signal that obtains with differential by picture signal flows through coil 50a, the 50b of each ring-type.
Shown in Fig. 4 B, coil 50a, the 50b of ring-type has the shape of substantial rectangular in the plane under the deployed condition.Constitute in the four edges of this annulus, a pair of relative limit (straight line portion) 51a is arranged essentially parallel to the setting of Z-axle, and remaining a pair of relative limit (sweep) 51b bends to basically along the arc of the outer surface curvature of fixture 45, and is provided with along the XY-face basically.
Fig. 5 A is the end view around the CPU 40, and Fig. 5 B is the cross-sectional view that obtains along the line 5B-5B among Fig. 5 A.Neck 13 and inner electron gun 16 thereof are not shown among Fig. 5 B.Fixture 45 is included in the dividing plate 46 vertical with the Z axle with respect to a position of deflection yoke 30 sides of speed modulation coil 50.
This dividing plate 46 forms by being combined into one such as the insulating material of resin and fixture 45.In traditional structure as shown in Figure 7, barrier 170 and fixture 145 are separated components.Thereby produce a problem, form a discharge path by gap small between barrier 170 and the fixture 145.According to the present invention, owing to integrally form dividing plate 46 and fixture 45, very close to each other therebetween, thus can not form discharge path therebetween.Therefore, the space length (creepage distance) between metal tape 37 and/or metallic screw 38 and the speed modulation coil 50 increases, thereby can prevent to discharge between them.
Shown in Fig. 5 B, though dividing plate 46 is formed on the whole periphery of fixture 45, the distance of 46 peripheral boundary from the Z-axle to dividing plate (below, the distance from the Z-axle to this peripheral boundary is called " highly " of dividing plate) is not a constant.More specifically, this dividing plate 46 is made up of the low second partition 46b of the ratio first dividing plate 46a that is arranged on the first high relatively dividing plate 46a on the X-axle and be arranged on the Y-axle.
Illustrate that with reference to figure 6A and 6B it highly is not the function of the dividing plate 46 of constant.
Fig. 6 A is the top view of the surrounding structure of dividing plate 46, and Fig. 6 B is along the being seen rearview of arrow 6B among Fig. 6 A.For simply, first to the 4th magnet 41,42,43,44 is not shown in Fig. 6 A and 6B.
According to the present invention, integrally form dividing plate 46 and fixture 45, thus different with the traditional structure shown in Fig. 7, the discharge of the part of can not flowing through between dividing plate 46 and the fixture 45.Even discharge among the present invention, suppose this discharge through the outside of the metallic screw 38 of associating by the outer perimeter of dividing plate 46 to the path that speed modulation coil 50 is extended.Yet, shown in Fig. 6 B, the height H of the first dividing plate 46a
1And the width W on the Y-direction of principal axis
P1(seeing Fig. 5 B) is configured to, feasible metallic screw 38 and metal tape 37 cresteds when observing deflection yoke 30 from fixture 45 sides along the Z-axle.Therefore, can prevent along the discharge shown in Fig. 6 A and 6B through first discharge path 61 in the outside of the outer perimeter of the first dividing plate 46a.
Shown in Fig. 5 B, the height of supposing the first dividing plate 46a is H
1, the height of second partition 46b is H
2, satisfy relation: H
1＞H
2Therefore, be arranged on the height of the height of the second partition 46b on the Y-axle, thereby can easily carry out the operation that the position of rotation of each magnet ring in first to the 4th magnet 41,42,43,44 that constitutes CPU 40 is regulated less than the first dividing plate 46a.Especially, in fact approach most dividing plate 46 although constitute magnet ring 41a, the 41b of first magnet 41, dividing plate 46 can not hinder the adjusting of the position of rotation of magnet ring 41a, 41b.
In addition, shown in Fig. 3 B, suppose the 41a of knob portion of magnet ring 41a, the 41b of formation and dividing plate 46 immediate first magnets 41
1, 41b
1Height with respect to the Z-axle is H
M, satisfy relation: H
M-H
2＞10mm.Therefore, the 41a of knob portion
1, 41b
1Can significantly stretch out with respect to the outer perimeter of second partition 46b, make dividing plate 46 can not hinder the adjusting of the position of rotation of the magnet ring 41a, the 41b that constitute first magnet 41.
In addition, the minimum value of supposing the height of dividing plate 46 is H
Min(H among the current embodiment
Min=H
2), from the Z-axle to constitute with magnet ring 41a, the 41b of dividing plate 46 immediate first magnets 41 remove the 41a of knob portion
1, 41b
1The distance of the outer perimeter of part in addition (outer perimeter radius) is R
M, satisfy relation: H
Min＞R
MTherefore, the minimum value H of the height by limiting dividing plate 46
Min, can prevent along the discharge of second discharge path 62 (seeing Fig. 6 A and 6B) that is extended from the outside of metal tape 37 (or metallic screw 38) by the outer perimeter of the lower part except that the first dividing plate 46a of dividing plate 46 to speed modulation coil 50.
Among the present invention, preferably, shown in Fig. 5 B,, constitute the 41a of knob portion with magnet ring 41a, the 41b of dividing plate 46 immediate first magnets 41 when when the Z-axle is observed
1, 41b
1Just with regard to the position of Z-axle, overlap with second partition 46b.Like this, the 41a of knob portion
1, 41b
1Highly become big with respect to stretching out of dividing plate 46, make when catching the 41a of knob portion
1, 41b
1The time dividing plate 46 can not become obstacle.Therefore, can prevent to damage the operability that the position of rotation of magnet ring 41a, 41b is regulated.In Fig. 5 B, though the 41a of knob portion of magnet ring 41a, 41b
1, 41b
1Overlap mutually, in fact, the 41a of knob portion
1, 41b
1Position of rotation around the Z-axle can be different.In addition, according to the present invention, preferably, the distance between metal tape 37 and the speed modulation coil 50 on the Z-direction of principal axis is 10mm or littler.Thereby speed modulation coil 50 is near deflection yoke 30, thus the velocity modulation sensitivity that has improved speed modulation coil 50, and can demonstrate more distinct image with improvement profile.
In addition, preferably, the distance between magnet ring 41a, the 41b of metal tape 37 and formation first magnet 41 on the Z-direction of principal axis is 10mm or littler.Therefore, CPU 40 is near deflection yoke 30, thereby the deterioration that the electron-beam point that is produced by the rotation of each magnet ring of regulating CPU 40 focuses on can reduce.
In the above-described embodiments, shown in Fig. 5 B, when when the Z-axle is observed, the metallic screw 38 and the first dividing plate 46a are arranged on the X-axle, and second partition 46b is arranged on the Y-axle.Yet, the invention is not restricted to this.For example, the metallic screw 38 and the first dividing plate 46a can be arranged on the Y-axle, and second partition 46b can be arranged on the X-axle.Perhaps, the metallic screw 38 and the first dividing plate 46a can be arranged on the diagonal axis, and second partition 46b can be arranged on another diagonal axis.
In addition, in the above-described embodiments, shown in Fig. 5 B, when when the Z-axle is observed, the first dividing plate 46a is arranged on about on axisymmetric two positions of Z-.According to the present invention, the first dividing plate 46a can only be arranged on the Z-direction of principal axis on the position relative with metallic screw 38.Shown in Fig. 5 B, by on axisymmetric two positions two first dividing plate 46a being set about Z-, even when the additional directions of metal tape 37 and metallic screw 38 with respect to the state among Fig. 5 B during around Z-axle Rotate 180 °, metallic screw 38 also can be relative with the first dividing plate 46a.Thereby can prevent discharge.Therefore, improved the degree of freedom of the additional directions of metal tape 37 and metallic screw 38 between erecting stage.
In the above-described embodiments, though the outer perimeter of the first dividing plate 46a is configured to have radius H
1Arc, and the outer perimeter of second partition 46b is configured to have radius H
2Arc, but the invention is not restricted to this.For example, the outer perimeter of the first dividing plate 46a and/or second partition 46b can also be curve, straight line or both combinations except arc.In this case, suppose by the height that limits the first dividing plate 46a through the height on tubular axis and vertical with the longitudinal direction of metallic screw 38 basically first, and limit the height of second partition 46b by the height on vertical with first of tubular axis and this second.
[example]
An example that the present invention is applied to the color cathode-ray tube apparatus with 29 inches Diagonal Dimension and 104 ° of deflection angles is described.
Among Fig. 5 B, the external diameter φ D of the head of metallic screw 38
BBe 7mm, and its length L
BBe 24mm.In addition, when the metal tape 37 of the shape of Ω basically on the outer surface that is installed in column part 35a is fastening by metallic screw 38, virtual cylinder surface (that is, among Fig. 5 B metal tape 37 and metallic screw 38 with respect to the circumscribed circle of Z-axle) 39 radius Rs with respect to the Z-axle
BBe 27.5mm, this virtual cylinder surface 39 contacts with metallic screw 38 middle distance Z-axles part (being the angle of the head of metallic screw 38 in this example) farthest with metal tape 37.
Shown in Fig. 3 B, this from the Z-axle to first magnet 41 that constitutes CPU 40 removes the 41a of knob portion to magnet ring 41a, 41b's
1, 41b
1The distance of the outer perimeter of annular section in addition (outer perimeter radius) R
MBe set to 22.5mm, the 41a of knob portion
1, 41b
1Width W
MBe set to 8mm, and from the center (Z-axle) of annular section to the 41a of knob portion
1, 41b
1The distance H on top
MBe set to 37mm.The setting of several external dimensions to magnet ring that constitute second to the 4th magnet 42,43,44 respectively is identical with this external dimensions to magnet ring 41a, 41b.
Among Fig. 5 A, at be combined into one thickness (size on the Z-direction of principal axis) T of the dividing plate 46 that forms of the position of deflection yoke 30 sides of fixture 45 and fixture 45
PBe set to 1.5mm.Among Fig. 5 B, the outer perimeter of the first dividing plate 46a is configured to have the radius H with respect to the Z-axle
1Arc, the outer perimeter of second partition 46b is configured to have the radius H with respect to the Z-axle
2Arc.The minimum value H of the height of dividing plate 46
MinEqual H
2The first size W of dividing plate 46a on the Y-direction of principal axis
P1Be set to 28mm.
Distance between metal tape 37 and the speed modulation coil 50 on the Z-direction of principal axis is 4.0mm.In addition, the distance on the Z-direction of principal axis is 8.5mm between the magnet ring 41a of metal tape 37 sides of the metal tape 37 and first magnet 41.
Diversely changing the height H of the first dividing plate 46a
1Height H with second partition 46b
2Condition get off to estimate following 2 points.
1, Fang Dian generation:
When the power supply of color cathode-ray tube apparatus is switched to ON/OFF, checks between metal tape 37 or metallic screw 38 and the speed modulation coil 50 and whether discharge.Under the situation that discharge takes place, further check its discharge path.Shown in Fig. 6 A and 6B, the situation that discharge takes place along first discharge path 61 through the outside of the outer perimeter of the first dividing plate 46a is defined as " 1 ", and the situation that discharge takes place along second discharge path 62 through the outside of the outer perimeter of second partition 46b is defined as " 2 ".
2, the operability of the rotation of magnet ring 41a, 41b adjusting:
Whether when optimally regulating the position of rotation that constitutes with magnet ring 41a, the 41b of dividing plate 46 immediate first magnets 41 when at observation post's display image the time, estimating dividing plate 46 becomes encumbrance.The situation that dividing plate 46 does not become encumbrance is defined as " satisfaction ", and the situation that dividing plate 46 becomes encumbrance is defined as " being unsatisfied with ".Optimally regulate after the position of rotation, but when the Z-axle is observed, the 41a of knob portion of magnet ring 41a, 41b
1, 41b
1On the position of Z-axle, overlapping with second partition 46b.
(experiment A)
Diversely change the height H of second partition 46b
2(=H
Min), make the height H of the first dividing plate 46a
1Be constant (26.5mm).In experiment A, the satisfied H that concerns
1＜R
BTherefore, when observing deflection yoke 30 from fixture 45 sides along the Z-axle, a part of head of metallic screw 38 is exposed to the outside of the outer perimeter of the first dividing plate 46a.
Table 1 has been summed up experiment condition and evaluation result.
Table 1
| Example numbering (No.) | A-1 | A-2 | A-3 | A-4 | A-5 | A-6 | A-7 |
| H 1(mm) | 26.5 | 26.5 | 26.5 | 26.5 | 26.5 | 26.5 | 26.5 |
| H 2(mm) | 22.5 | 23.0 | 23.5 | 24.5 | 25.5 | 26.0 | 26.5 |
| H M-H 2(mm) | 14.5 | 14.0 | 13.5 | 12.5 | 11.5 | 11.0 | 10.5 |
| Whether discharge/path | Be/1,2 | Be/1 | Be/1 | Be/1 | Be/1 | Be/1 | Be/1 |
| The operability that position of rotation is regulated | Satisfied | Satisfied | Satisfied | Satisfied | Satisfied | Satisfied | Satisfied |
In routine No.A-1, the part of metallic screw 38 is exposed to the outside of the outer perimeter of the first dividing plate 46a, and does not satisfy relation: H
Min＞R
MTo routine No.A-7, the part of metallic screw 38 is exposed to the outside of the outer perimeter of the first dividing plate 46a at routine No.A-2.Therefore in any of these examples, discharge.
In addition, to any of routine No.A-7, satisfy relation: H at routine No.A-1
M-H
2＞10mm, the operability that the feasible rotation of satisfying magnet ring 41a, 41b is regulated.
(experiment B)
Diversely change the height H of second partition 46b
2(=H
Min), make the height H of the first dividing plate 46a
1Be constant (27.5mm).In experiment B, H
1Equal R
B, make that the head of metallic screw 38 is covered by the first dividing plate 46a just when observing deflection yoke 30 from fixture 45 sides along the Z-axle.
Table 2 has been summed up experiment condition and evaluation result.
Table 2
| Example numbering (No.) | B-1 | B-2 | B-3 | B-4 | B-5 | B-6 | B-7 | B-8 |
| H 1(mm) | 27.5 | 27.5 | 27.5 | 27.5 | 27.5 | 27.5 | 27.5 | 27.5 |
| H 2(mm) | 22.5 | 23.0 | 23.5 | 24.5 | 25.5 | 26.5 | 27.0 | 27.5 |
| H M-H 2(mm) | 14.5 | 14.0 | 13.5 | 12.5 | 11.5 | 10.5 | 10 | 9.5 |
| Whether discharge/path | Be/2 | Not | Not | Not | Not | Not | Not | Not |
| The operability that position of rotation is regulated | Satisfied | Satisfied | Satisfied | Satisfied | Satisfied | Satisfied | Dissatisfied | Dissatisfied |
In routine No.B-1, do not satisfy relation: H
Min＞R
MSo, discharge.On the other hand, do not discharge to routine No.B-8 at routine No.B-2.
In addition, to routine No.B-6, satisfy relation: H at routine No.B-1
M-H
2＞10mm, the operability that the feasible rotation of satisfying magnet ring 41a, 41b is regulated.
(experiment C)
Diversely change the height H of second partition 46b
2(=H
Min), make the height H of the first dividing plate 46a
1Be constant (28.5mm).In experiment C, satisfy relation: H
1＞R
BAnd W
P1＞L
B, make that metallic screw 38 is covered fully by the first dividing plate 46a when observing deflection yoke 30 from fixture 45 sides along the Z-axle.
Table 3 has been summed up experiment condition and evaluation result.
Table 3
| Example numbering (No.) | C-1 | C-2 | C-3 | C-4 | C-5 | C-6 | C-7 | C-8 | C-9 |
| H 1(mm) | 28.5 | 28.5 | 28.5 | 28.5 | 28.5 | 28.5 | 28.5 | 28.5 | 28.5 |
| H 2(mm) | 22.5 | 23.0 | 23.5 | 24.5 | 25.5 | 26.5 | 27.5 | 28.0 | 28.5 |
| H M-H 2(mm) | 14.5 | 14.0 | 13.5 | 12.5 | 11.5 | 10.5 | 9.5 | 9.0 | 8.5 |
| Whether discharge/path | Be/2 | Not | Not | Not | Not | Not | Not | Not | Not |
| The operability that position of rotation is regulated | Satisfied | Satisfied | Satisfied | Satisfied | Satisfied | Satisfied | Dissatisfied | Dissatisfied | Dissatisfied |
In routine No.C-1, do not satisfy relation: H
Min＞R
MSo, discharge.On the other hand, do not discharge to routine No.C-9 at routine No.C-2.
In addition, to routine No.C-6, satisfy relation: H at routine No.C-1
M-H
2＞10mm, the operability that the feasible rotation of satisfying magnet ring 41a, 41b is regulated.
The applicable field of the present invention is not subjected to concrete restriction, can use the present invention in wide range, for example TV receiver and computer display.
Only illustrate the foregoing description in order to illustrate technology contents of the present invention.Should only not explain the present invention, can in the scope of spirit of the present invention and claim, implement the present invention in every way, and should broadly explain the present invention according to such object lesson.
Claims (4)
1, a kind of color cathode-ray tube apparatus comprises:
Cathode ray tube, this cathode ray tube are included in and have formed fluoroscopic panel on its inner surface, the glass that is connected with described panel awl, and the interior electron gun of neck that is included in described glass awl;
Be arranged on the deflection yoke on the described glass awl outer surface, its in the horizontal direction with the vertical direction upper deflecting from described electron gun electrons emitted bundle, make the described phosphor screen of this electron beam scanning;
CPU, this CPU comprises the columniform basically fixture that is arranged on described glass awl outside, and many to annular magnet ring, these are many to be arranged on the described holder circumference surface, on tube axial direction position with respect to the described electron gun side of described deflection yoke to magnet ring; And
Remain on the speed modulation coil on the described fixture,
Wherein, described deflection yoke comprises: at the horizontal deflection coil of described horizontal direction upper deflecting electron beam, frame deflector coil at described vertical direction upper deflecting electron beam, guarantee the insulation frame that insulate between described horizontal deflection coil and the described frame deflector coil, the column part that is arranged on the described fixture side of described insulation frame is fixed on the metal tape that described glass is bored, and the metallic screw at fastening described metal tape two ends
Wherein, described fixture is included in the dividing plate vertical with described tubular axis with respect to a position of the described deflection yoke side of described speed modulation coil,
The formation that is combined into one of described dividing plate and described fixture,
Described metallic screw is positioned on first vertical with described tubular axis,
This dividing plate comprises: first dividing plate, it is arranged on described first, make when from described fixture side when described tubular axis is observed described deflection yoke, this first dividing plate covers described metallic screw; And second partition, its be arranged on described first vertical with described tubular axis second on, and
Suppose that described first dividing plate is H with respect to the height of described tubular axis
1, described second partition is H with respect to the height of described tubular axis
2, described dividing plate is H with respect to the minimum constructive height of described tubular axis
Min, described many to be positioned in the magnet ring with described deflection yoke near a pair of first magnet ring of a side, to be used to carry out around the knob portion of the rotary manipulation of described tubular axis be H with respect to the height of described tubular axis
M, and be R from described tubular axis to this distance to the outer perimeter of the part except that described knob portion of first magnet ring
M, satisfy relation: H
1＞H
2, H
M-H
2＞10mm, H
Min＞R
M
2, color cathode-ray tube apparatus according to claim 1, wherein, when when described tubular axis is observed, this for first magnet ring to be used to the described knob portion that carries out around the rotary manipulation of described tubular axis just overlapping with described second partition around the position of described tubular axis.
3, color cathode-ray tube apparatus according to claim 1, wherein, the distance between described metal tape and the described speed modulation coil on described tube axial direction is 10mm or still less.
4, color cathode-ray tube apparatus according to claim 1, wherein said metal tape and should be 10mm or still less to the distance on described tube axial direction between first magnet ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101186121A CN100481305C (en) | 2005-10-31 | 2005-10-31 | Color CRT |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101186121A CN100481305C (en) | 2005-10-31 | 2005-10-31 | Color CRT |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1959913A true CN1959913A (en) | 2007-05-09 |
| CN100481305C CN100481305C (en) | 2009-04-22 |
Family
ID=38071532
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005101186121A Expired - Fee Related CN100481305C (en) | 2005-10-31 | 2005-10-31 | Color CRT |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100481305C (en) |
-
2005
- 2005-10-31 CN CNB2005101186121A patent/CN100481305C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN100481305C (en) | 2009-04-22 |
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