CN1019715B - Color cathode ray tube - Google Patents
Color cathode ray tubeInfo
- Publication number
- CN1019715B CN1019715B CN 91101351 CN91101351A CN1019715B CN 1019715 B CN1019715 B CN 1019715B CN 91101351 CN91101351 CN 91101351 CN 91101351 A CN91101351 A CN 91101351A CN 1019715 B CN1019715 B CN 1019715B
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- panel
- ray tube
- cathode ray
- color cathode
- pars infundibularis
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Abstract
A metal plate (48, 88) is interposed between a panel section (42, 82) and funnel sections (50, 90) of an envelope (40, 80) which is provided with plural neck sections(52, 92). The length of the envelope can be thus made shorter in the direction of the tube axis. The structure of the envelope can be made simpler and its productivity can be enhanced accordingly. Further, it can be made lighter in weight.
Description
The present invention relates to color cathode ray tube, particularly relate to a kind of color cathode ray tube with shell of a plurality of necks.
Traditional color cathode ray tube with a plurality of necks as shown in Figure 1.As the clear 61-256551 of Japanese patent specification disclosed, this color cathode ray tube 1 has a shell 11, it comprises: have roughly rectangular panel 4 and the panel part 2 in the skirt section 6 of being extended by the periphery of panel 4, be connected to funnel (shape) portion (branch) 8 of panel part 2, and, by a plurality of necks 10 that funnel (shape) portion (branch) 8 extends, cathode ray tube 1 inside keeps vacuum by panel part 2, pars infundibularis 8 and neck 10.The electron gun arrangements 12 that is used for launching three electron beams is installed in each neck 10.Have arrangement for deflecting 14 on the outer surface of pars infundibularis 8 and neck 10, be used for producing and make the magnetic field of electron beam in level and vertical direction deflection, phosphor screen 16 is formed on the inner surface of panel 4 of panel part 2, roughly rectangular shadow mask 18 is arranged on the inside of pipe, over against phosphor screen 16, separate certain intervals with it, shadow mask 18 is made by a sheet metal, have a plurality of apertures on it, framework 22 is housed on the edge of shadow mask 18.
Three electron beams that each electron gun 12 is sent are deflected 14 deflections of device, the scope that Fig. 1 has only drawn three electrons beam deflecting, electron beam after the deflection all can coalescence enters phosphor screen 16 and sends three kinds of colors of red, green, blue, the phosphor screen that electron beam scanned 16 that is sent by each electron gun 12 is divided into several regions, and is corresponding with each electron gun 12 respectively.
Shell with said structure as cathode ray tube, distance from panel to neck can be done more onesizely but have only the shell of a neck to come shortly than other, this is because can do lessly by fluoroscopic area that electron gun scanned that is installed in neck or zone, like this, distance between electron gun and the phosphor screen just can be done shortlyer, when the size of shell increased, this effect that distance is shortened just more can embody.; under the situation that panel part, pars infundibularis and neck are all made by glass; because the character of glass; these parts can not make become very steep camberline with the distance between further shortening electron gun and the phosphor screen, the shortening of distance had certain restriction when all each several parts of shell were all used glass.
The shell that is used for color cathode ray tube with above-mentioned structure is compared with the shell that is used for the common color cathode ray tube, very complicated shape is arranged, this shell is made by glass, and glass processing is become the complicated shape of this shell is very difficult, so just makes this shell be difficult to a large amount of productions.
Shell is used for blocking atmospheric pressure to keep inner vacuum.When size is very big, because it can be subjected to sizable power atmospheric existence, so, the thickness of glass of pars infundibularis is basic identical with panel part,, atmospheric pressure is smaller to the distortion that the glass neck is caused, so, the thickness of neck glass needn't be done very greatly, for example only needs about 1mm thick just passable.The thickness of glass just sharply changes from pars infundibularis to neck like this, thereby the thermal capacity that carries out the transition to this part of neck from pars infundibularis is sharply changed, this makes the thermal deformation of the shell that will repeatedly be heated in manufacturing process increase, shell destroys because of thermal deformation probably, and this just makes this shell be difficult to a large amount of productions.And the thickness of pars infundibularis is identical with panel part basically, so when the size of shell increased, it became quite heavy, has increased the weight of the color cathode ray tube that uses this shell.
The objective of the invention is, the color cathode ray tube that a kind of use has the shell of a plurality of necks is proposed, the degree of depth of described shell can be done more shallowly, the electron gun and the distance between the phosphor screen of described color cathode ray tube can be done shortlyer, its weight can be done gentlyer, and is easy to a large amount of productions.
According to the present invention, a kind of color cathode ray tube with vacuum casting can be provided, comprise: a plurality of pars infundibularises with leading edge and trailing edge, a plurality of necks on the pars infundibularis trailing edge, the panel part in a skirt section that comprises panel and extend by the periphery of panel with inner surface, the metal jockey in the skirt section of leading edge that is used for connecting pars infundibularis and panel part, this device has a plurality of perforates corresponding with the leading edge of pars infundibularis on a cardinal plane that is parallel to panel inner surface haply and the cardinal plane, described color cathode ray tube also comprises, phosphor screen on panel inner surface, be positioned near the shadow mask of phosphor screen, and, lay respectively at the electron gun of each neck.
According to the present invention, a kind of color cathode ray tube with vacuum casting can be provided, comprise: a plurality of pars infundibularises with leading edge and trailing edge, a plurality of necks on the pars infundibularis trailing edge, the panel part in a skirt section that comprises panel and extend by the periphery of panel with inner surface, the metal jockey in the skirt section of leading edge that is used for connecting pars infundibularis and panel part, this device has a plurality of perforates corresponding with the leading edge of pars infundibularis on a cardinal plane that is parallel to panel inner surface haply and the cardinal plane, described color cathode ray tube also comprises, be used to serve as a contrast at the leading edge of pars infundibularis and a plurality of first sarks between the metal jockey, its thermal coefficient of expansion is less than the thermal coefficient of expansion of metal jockey, be used to serve as a contrast at the skirt section of panel part and a plurality of second sarks between the metal jockey, its thermal coefficient of expansion is less than the thermal coefficient of expansion of metal jockey, phosphor screen on panel inner surface, be positioned near the shadow mask the phosphor screen, and, lay respectively at the electron gun of each neck.
Can understand the present invention more fully by the detailed description of doing below in conjunction with accompanying drawing, wherein:
Fig. 1 is the sectional view that expression has traditional color cathode ray tube of a plurality of necks,
Fig. 2 is the stereogram according to first embodiment of the shell of color cathode ray tube of the present invention,
Fig. 3 is the sectional view along A-A line among Fig. 2, so that the shell among Fig. 2 to be shown,
Fig. 4 is the local amplification sectional view of shell among Fig. 3,
Fig. 5 is the sectional view of a kind of distortion of first embodiment,
Fig. 6 is the sectional view that adopts the color cathode ray tube of first embodiment of shell,
Fig. 7 is the local amplification sectional view of pipe in the presentation graphs 6,
Fig. 8 is the sectional view according to second embodiment of the shell of color cathode ray tube of the present invention,
Fig. 9 is the local amplification sectional view of shell among Fig. 8,
Figure 10 A is the amplification sectional view of part I in the presentation graphs 9,
Figure 10 B is the amplification sectional view of part II in the presentation graphs 9,
Figure 11 is the stereogram of first kind of distortion of expression first sark,
Figure 12 is the sectional view of first kind of distortion of expression first sark,
Figure 13 is the stereogram of second kind of distortion of expression first sark,
Figure 14 is the sectional view of second kind of distortion of expression first sark,
Figure 15 is the stereogram of the third distortion of expression first sark,
Figure 16 is the sectional view of the third distortion of expression first sark,
Figure 17 is the sectional view that the color cathode ray tube of second embodiment of shell is adopted in expression,
Figure 18 is the local amplification sectional view of pipe among expression Figure 17,
Figure 19 A is the amplification sectional view of part III among expression Figure 18,
Figure 19 B is the amplification sectional view of part IV among expression Figure 18.
Narrate some embodiments of the present invention below with reference to accompanying drawings.
According to first embodiment of the shell with a plurality of necks of color cathode ray tube of the present invention as shown in Figures 2 and 3.This shell is used for color cathode ray tube.Shell 40 comprises the panel part 42 that has haply for the panel 44 of rectangle and the skirt section 46 of extending along the edge of panel 44, be parallel to the back shroud 48(metal jockey that panel 44 is provided with and engages with the skirt section 46 of panel part 42 haply), a plurality of pars infundibularises 50 that engage with back shroud 48, and a plurality of neck 52 that extends by pars infundibularis 50.Shell 40 inside keep vacuum by panel part 42, back shroud 48, pars infundibularis 50 and neck 52, and each neck 52 has a plurality of pins 54, and polylith gusset plate 56 is added in the outer surface of back shroud 48, makes back shroud 48 can bear atmospheric pressure.
40 some while of shell draw in Fig. 4, and this shell 40 can be used for for example 20 inches color cathode ray tube.Like this, can on the inner surface of shell 40 wainscots 44, form the phosphor screen that 304.8mm is long, 406.4mm is wide, the width in skirt section 46 is 85mm, back shroud 48 usefulness contain the seal in alloy manufacturing of 50% nickel, make the thick plate of 2mm, it is vertical with tubular axis, and its shape matches with the outer rim in skirt section 46, and having a plurality of perforates 58, each perforate 58 communicates with a corresponding pars infundibularis 50.Skirt section 46 and back shroud 48 are engaged with each other, and accompany welding glass (for example crystalline state lead borate glass) 49 therebetween, form oxide layer on the surf zone of the back shroud 48 that welding glass 49 is engaged, to strengthen the bond strength of welding glass 49.The thermal coefficient of expansion that is used for making the alloy of back shroud 48 is 99.0(10
-7/ ℃).Have 12 pars infundibularises 50 of certain intervals distance to be bonded on the back shroud 48 each other, each perforate of back shroud 48 forms the rectangle of wide 30mm, a long 25mm haply, and the leading edge of each pars infundibularis 50 is bonded in the perforate.Neck 52 external diameters are 22.5mm, are formed by continuous extension of the trailing edge of every pars infundibularis 50, and each vertically has four necks 52 panel part, and each laterally has three necks 52.12 necks like this, altogether.Back shroud 48 and each pars infundibularis 50 are engaged with each other by welding glass therebetween, and the thermal coefficient of expansion that is used for making the glass of pars infundibularis 50 and neck 52 is 100.0(10
-7/ ℃).Stretch out eight pins 54 from the end of each neck 52, each gusset plate 56 that is added in back shroud 48 outer surfaces is by becoming L shaped mild steel manufacturing, and gusset plate 56 is that 2.0mm is thick, and 20mm height, these gusset plates 56 are that point is welded on the back shroud 48.
Shell with above-mentioned structure can make skirt section and pars infundibularis engage well with back shroud in the time of can guaranteeing to use welding glass, the thermal coefficient of expansion of making the alloy of back shroud equates substantially with the glass of making pars infundibularis, the distortion that having prevented thus is heated causes, in this shell, metal back shroud is between panel part and pars infundibularis, therefore there is no need to use glass that panel part is extended to pars infundibularis, glass can not form crooked very steep curved surface owing to its characteristic, but under the situation of using metal, just can form shell with the very steep curved surface of local buckling, like this, shell can axially done shortlyer, so the distance between panel and the neck (being the degree of depth of shell) can be than traditional, all shorter by the shell of glass manufacturing.Identical with panel part usually by panel part to the thickness of this segment glass of pars infundibularis transition, be very large, but here, what used by panel part to this part of pars infundibularis transition is metal rather than glass, like this, the weight of shell can alleviate, and, pars infundibularis does not have thick part, the thermal deformation of the shell that can reduce to produce in the manufacture process.Further, panel part, back shroud, pars infundibularis and neck can separate manufacturing separately, and this has just reduced production cost and has made shell be more suitable for a large amount of productions.
Back shroud in the present embodiment contains 50% nickel by seal in alloy manufacturing above-mentioned, and in addition, it also can be with the seal in alloy manufacturing that contains 52% nickel and 6% chromium, makes tabularly, but its shape also can accomplish to match with the curvature of panel.The gusset plate that point is welded on the back shroud outer surface becomes L shaped, but when adopting other welding manner such as arc welding or plasma welding method, just not necessarily will make gusset plate L shaped, for example 5mm is thick if back shroud made, shell just can bear atmospheric pressure, like this, just needn't use gusset plate.
Fig. 5 represents a kind of distortion of shell, and wherein, used different in the shape of back shroud and the first embodiment of the invention, except the shape of this back shroud, other parts of shell are identical, so, with the narration of omitting to same parts.Edge part that back shroud 58 engages with skirt section 46 and with edge part that pars infundibularis 50 engages between form step 59, this step 59 is used for further drawing back the distance of pars infundibularis 50 and panel 44.Have at back shroud 58 under the situation of this step 59, it more can bear atmospheric pressure than making when tabular.This distortion can obtain with first embodiment of shell getable same advantage, first embodiment and the distortion thereof of shell can be used for multiple cathode ray tube.
A kind of color cathode ray tube that adopts above-mentioned shell as shown in Figure 6 and Figure 7.The shell 40 of this color cathode ray tube 60 comprises the panel part in the skirt section 46 that has rectangular haply panel 44 and extended by the edge of panel 44, be arranged essentially parallel to the back shroud 48 that panel 44 is provided with and engages with the skirt section 46 of panel part 42, a plurality of pars infundibularises 50 that engage with back shroud 48, a plurality of pars infundibularises 50 by correspondence extend the neck 52 that forms, vacuum is kept by panel part 42, back shroud 48, pars infundibularis 50 and neck 52 in the inside of shell 40, each neck 52 has a plurality of pins 54, and a plurality of gusset plates 56 are added on the outer surface of back shroud 48.
In this color cathode ray tube 60,12 electron guns place each neck 52 respectively, pin 54 is connected to electron gun 62, phosphor screen 64 is formed on the inner surface of panel 44, beats on phosphor screen 64 from three electron beams that each electron gun 62 penetrates, and sends three kinds of colors of red, green, blue, shadow mask 66 is arranged in shell 40, over against phosphor screen 64, have a plurality of apertures on the shadow mask 66, shadow mask frame 68 is contained in shadow mask 66 all edges and is bearing among the panel part 42.
Concerning 20 inches color cathode ray tube for example, what form on panel 44 inner surfaces is the phosphor screen 64 of long 304.8mm, wide 406.4mm, it is wide that 85mm is made in skirt section 46, back shroud 48 is by the seal in alloy manufacturing that contains 50% nickel, make the plate of thick 2mm, it is perpendicular to tubular axis, and its shape matches with the outer rim in skirt section 46, on the back shroud and have a plurality of perforates 58, each perforate 58 and corresponding pars infundibularis 50 are communicated with.Skirt section 46 and back shroud 48 are engaged with each other by welding glass (for example crystalline state lead borate glass) therebetween, form oxide layer on the surf zone of the back shroud 48 that welding glass 49 engages, to strengthen the bond strength of welding glass 49.The thermal coefficient of expansion that is used for making the alloy of back shroud 48 is 99.0(10
-7/ ℃), the leading edge that pars infundibularis 50 engages with back shroud 48 forms the rectangle of long 30mm, a wide 25mm haply, the trailing edge external diameter of each neck 52 is 22.5mm, form by corresponding pars infundibularis 50 extensions, vertical each row along panel arranges four necks 52, along laterally each arranges three necks 52 of arrangement, total like this its 12 necks 52.Back shroud 48 and each pars infundibularis 50 are engaged with each other by welding glass 51 therebetween, and the thermal coefficient of expansion that is used for making the glass of pars infundibularis 50 and neck 52 is 100.0(10
-7/ ℃).Stretch out eight pins from the end of each neck 52, be added in the L shaped gusset plate 56 mild steel manufacturing on back shroud 48 outer surfaces, 2.0mm is thick, the 20mm height, and 56 of gusset plates are welded on the back shroud 48.
Color cathode ray tube 60 with above-mentioned structure has 12 electron guns 62, separately corresponding region divergent bundle on 62 pairs of phosphor screens of these electron guns, be divided into 12 zones on the phosphor screen, each zone is subjected to the bombardment of corresponding electron gun, and phosphor screen sends three kinds of colors of red, green, blue in the corresponding region under the effect of the electron beam that electron gun penetrates.
In above-mentioned color cathode ray tube, it is very little that the phosphor screen scope (zone) that electron gun scanned is compared with traditional color cathode ray tube, like this, the electron beam that is sent by electron gun just can arrive phosphor screen through short distance, this has just reduced the electron beam possibility on phosphor screen straggly, as a result, the picture quality of this color cathode ray tube can be quite high.According to color cathode ray tube of the present invention, skirt section and pars infundibularis can be engaged with back shroud reliably by welding glass, and in addition, the coefficient of expansion of the alloy of manufacturing back shroud is same with the glassy phase of making pars infundibularis basically, has prevented that shell is out of shape because of being heated.In according to above-mentioned color cathode ray tube of the present invention, the back shroud of metal manufacturing is arranged between panel part and the pars infundibularis, so do not need therebetween to connect with glass.Glass is because its characteristic can not be made crooked very steep curved surface,, if employing metal, shell can be made has very steep sweep, therefore can shorten the axial length of pipe, so the distance between panel and the neck (being the degree of depth of color cathode ray tube) can be done shortlyer than the conventional enclosure of all making with glass.In traditional shell, identical with panel part thickness basically from panel part to the glass of pars infundibularis transition portion, be quite thick, this segment glass can be replaced by sheet metal, has alleviated the weight of color cathode ray tube thus.And any part of pars infundibularis all there is no need to do very thickly, and this has just reduced the thermal deformation of shell in the production process.In addition, panel part, back shroud, pars infundibularis and neck can independently separately be made, and assemble then and make color cathode ray tube, and this has just reduced production cost, in addition, makes this color cathode ray tube be more suitable for a large amount of productions.
According to second example of the shell of color cathode ray tube of the present invention as shown in Figure 8, this shell 80 is used for cathode ray tube.Shell 80 comprises, the panel part 82 in the skirt section 86 that has rectangular basically panel 84 and extend by the edge of panel 84, be arranged essentially parallel to the back shroud 88 that panel 84 is provided with and engages with the skirt section 86 of panel part 82, a plurality of pars infundibularises 90 that engage with back shroud 88, a plurality of necks 92 that extend by the pars infundibularis 90 of correspondence.Vacuum is kept by panel part 82, back shroud 88, pars infundibularis 90 and neck 92 in shell 80 inside, each neck 92 has a plurality of pins 94, a plurality of gusset plates 96 are added in the outer surface of back shroud 88, first sheet metal 98 as first sark places between back shroud 88 and each pars infundibularis 90, places between back shroud 88 and the skirt section 86 as second sheet metal 100 of second sark.
This shell is used for for example 20 inches color cathode ray tube, in shell 80, can form the phosphor screen of long 304.8mm, wide 406.4mm on the inner surface of panel 84, wide 85mm is made in skirt section 86, back shroud 88 usefulness mild steel are made, make the shape of the plate of thick 2mm, its thermal coefficient of expansion of mild steel of making back shroud 88 is 140(10
-7/ ℃), back shroud 88 is perpendicular to tubular axis, makes week with skirt section 86 along the shape that matches, on it and have a plurality of perforates 99, each perforate 99 be communicated with a corresponding pars infundibularis 90.Shown in Fig. 9 and Figure 10 B, second sheet metal 100 is by the alloy manufacturing that contains 50% nickel, thick 0.3mm, and wide 20mm makes hollow plate-like, places between skirt section 86 and the bonnet 88, and engages with back shroud 88.Welding glass (for example crystalline state lead borate glass) 104 forms oxide layer to strengthen the bond strength of welding glass 104 on second sheet metal, 100 surfaces between second sheet metal 100 and skirt section 86.Being used for making second thermal coefficient of expansion that serves as a contrast the alloy of hot thing is 99.0(10
-7℃).12 pars infundibularises 90 engage with back shroud 88 through sark, and each leading edge of back shroud 88 is made the rectangle of the about 40mm of diagonal.The trailing edge of each neck 92 is formed by a pars infundibularis 90 extensions of its correspondence, and neck 92 external diameters are 22.5mm.Shown in Figure 10 A, first sheet metal 98 is by the alloy manufacturing that contains 50% nickel, thick 0.3mm, wide 5mm makes the plate-like of hollow, places the portion of back shroud 88 and each pars infundibularis 90, and engage with back shroud 88, welding glass 102 is made the glass of pars infundibularis 90 and neck 92 between first sheet metal 98 and each pars infundibularis 90, its thermal coefficient of expansion is 100.0(10
-7/ ℃), stretch out eight pins 94 from the end of each neck 92, along vertical each row of panel part 82 four necks are arranged, laterally each row has three necks, altogether 12 necks.Be added in each the L shaped gusset plate 96 low carbon steel plate manufacturing on back shroud 88 outer surfaces, thick 2.0mm, high 200mm, point is welded on the back shroud 88.
How narration now engages one another above-mentioned parts.Obtain as engaging by welding glass between the sheet metal of first and second sarks and the pars infundibularis that glass is made, welding glass cured 1 hour under about 450 ℃, and metallic plate and glass are engaged with each other.The metallic plate that engages and the thermal coefficient of expansion of glass are: the thermal coefficient of expansion of metallic plate is 99.0(10
-7/ ℃), the thermal coefficient of expansion of making the glass of pars infundibularis is 100.0(10
-7/ ℃), so almost do not stay any distortion in metallic plate behind joint and the glass.Then adopt line to weld between metal and the metal and engage, obtain with welding by line as engaging between the sheet metal of sark with the back shroud of metal manufacturing.Away from using the welding glass engaging portion, this is to split because these engaging portion meetings owing to the heat in the welding process is out of shape, make the sealing of glass take off from the junction to welding portion as far as possible.
According to shell with above-mentioned structure, back shroud engages with pars infundibularis enough welding glass of energy and sheet metal reliably with skirt section and back shroud, the thermal coefficient of expansion of alloy of making first and second sheet metals is substantially the same with the glass of making pars infundibularis, can prevent the shell temperature distortion thus.In this embodiment, can obtain with first embodiment in same advantage, and, because first and second sarks are made with seal in alloy, back shroud is made with mild steel, glass, seal in alloy, mild steel, seal in alloy and glass can engage respectively successively, so expensive seal in alloy can enoughly get more the least possible.Because back shroud can be used the mild steel manufacturing, so also assembling easily of shell.
Although adopted line to weld weld metal and metal among the embodiment, other welding method also is to adopt as plasma, laser and ultra-sonic welded.
Figure 11 to Figure 16 represents that other has difform first sark, first kind of distortion of first sark such as Figure 11 and shown in Figure 12.This first sark, 106 usefulness contain the seal in alloy manufacturing of 50% nickel, sark 106 comprises the part and two dish type or the flange sections of giving prominence to from this cylindrical portion both ends horizontal that are tubular basically, and the outer surface of these disc-shaped parts engages with welding glass 102 and back shroud 88 respectively.
Second kind of distortion of first sark such as Figure 13 and shown in Figure 14, this sark 108 usefulness contain the alloy manufacturing of 50% nickel.Sark 108 comprises the part and two dish type or the flange sections of inwardly giving prominence to from this cylindrical portion both ends horizontal that are tubular basically, and the outer surface of these disc-shaped parts engages with welding glass 102 and back shroud 88 respectively.
The third distortion of first sark is as Figure 15 and shown in Figure 16, and this sark 110 usefulness contain the seal in alloy manufacturing of 50% nickel.Sark 110 comprises a part that is tubular basically and two dish types or flange section, one of them stretches out from the inside level of an end of cylindrical portion, the outside level of another other end from cylindrical portion is stretched out, the outer surface of the disc-shaped part that inwardly stretches out engages with welding glass 102, and the outer surface of outwardly directed disc-shaped part engages with back shroud 88.
Adopt first sark first when the third be out of shape, back shroud comes far from pars infundibularis in the time of can be than use metallic plate 98, so, can avoid fused glass institute engaging portion to be subjected to the influence of the heat that produced when back shroud is welded on the sark better.
First and second sarks are by the alloy manufacturing that contains 50% nickel, but also can be with other alloy manufacturing that contains 52% nickel and 6% chromium.
Back shroud is made tabular, but it also can do to such an extent that have same curvature with panel.
A kind of color cathode ray tube of above-mentioned shell that uses is shown in Figure 17 to 19, these color cathode ray tube 120 used shells 80 comprise the panel part 82 in the skirt section 86 that has rectangular basically panel 84 and extend from panel 84 edges, be parallel to the back shroud 88 that panel 84 is provided with and is connected with the skirt section 86 of panel part 82 haply, a plurality of pars infundibularises 90 that engage with back shroud 88, and, a plurality of necks 92, each neck 92 is formed by pars infundibularis 90 continuous extensions of a correspondence.Vacuum is kept by panel part 82, back shroud 88, pars infundibularis 90 and neck 92 in shell 80 inside, each neck 92 has a plurality of pins 94, a plurality of gusset plates 96 are added in the outer surface of back shroud 88, first sheet metal 98 as first sark places between back shroud 88 and each pars infundibularis 90, to realize joint therebetween, second sheet metal 100 as second sark places between back shroud 88 and the skirt section 86, to realize joint therebetween.
In this color cathode ray tube 120, electron gun 122 is placed in each neck 92, pin 94 is connected to each electron gun 122, and phosphor screen 124 is formed on panel 84 inner surfaces, and the electron beam that penetrates from each electron gun 122 drops on the phosphor screen 124, send three kinds of colors of red, green, blue, shadow mask 126 is positioned at shell 80, in the face of phosphor screen 124, has a plurality of apertures on the shadow mask 126, shadow mask frame 128 surrounds shadow mask 126, and locatees in panel part 82.
Concerning 20 inches color cathode ray tube for example, the phosphor screen of long 304.8mm, wide 406.4mm is formed on the inner surface of panel 124, and it is wide that 85mm is made in skirt section 86, and the tabular of thick 2mm made in back shroud 88 mild steel manufacturing.The thermal coefficient of expansion of making the mild steel of back shroud 88 is 140(10
-7/ ℃), back shroud 88 is made the shape that is suitable for 86 outers, skirt section perpendicular to tubular axis, has a plurality of perforates 98 on it, and each perforate 98 pars infundibularis 90 corresponding with it is communicated with.Second sheet metal, 100 thick 0.3mm, wide 200mm make the hollow plate-like, and the alloy manufacturing with containing 50% nickel places between skirt section 86 and the back shroud 88, and engages with back shroud 88.Welding glass (for example crystalline state lead borate glass) 104 is sandwiched between second sheet metal 100 and the skirt section 86, forms oxide layer to increase the joint capacity of welding glass 104 on second sheet metal 100 will be burn-on the surf zone of welding glass 104.The thermal coefficient of expansion of making the alloy of second sheet metal 100 is 99.0(10
-7/ ℃).The leading edge of the pars infundibularis 90 that each will engage with back shroud 88 through sark is made the rectangle of the about 40mm of diagonal.The trailing edge of each neck 92 is formed by a pars infundibularis 92 continuous extensions of its correspondence, and external diameter is 22.5mm.First sheet metal 98 is thick to be 0.3mm, wide 5mm, is the hollow plate-like, by the alloy manufacturing that contains 50% nickel, places between back shroud 88 and each pars infundibularis, engages with back shroud 88.Welding glass 102 will weld at first sheet metal 98 on the surf zone of welding glass 102 and form oxide layer between first sheet metal 98 and each pars infundibularis 90, to strengthen the joint capacity of welding glass 102.The thermal coefficient of expansion that is used for making the glass of pars infundibularis 90 and neck 92 is 100.0(10
-7/ ℃), eight pins 94 stretch out from the end of each neck 92, the low carbon steel plate manufacturing that each gusset plate 96 usefulness is L shaped, and thick 2.0mm, high 20mm, point is welded on the back shroud 88.
Color cathode ray tube with above-mentioned structure comprises 12 electron guns 122, each electron gun 122 divergent bundle, be used for sending three kinds of colors of red, green, blue in fluoroscopic corresponding region, specifically, phosphor screen is divided into 12 zones corresponding to 12 electron guns, and phosphor screen sends three kinds of colors of red, green, blue of the electron beam that penetrates corresponding to each electron gun.
In above-mentioned color cathode ray tube, more much smaller by the phosphor screen zone that electron gun scanned than traditional color cathode ray tube, so, the electron beam that each electron gun penetrates just can arrive phosphor screen through short distance, has reduced the electron beam possibility to phosphor screen straggly thus.As a result, can significantly improve the picture quality of color cathode ray tube.
Above-mentioned each parts of narration are how to be engaged with each other together below.Obtain as engaging between first and second sheet metals of first and second sarks and the glass of making pars infundibularis with welding glass, welding glass cured 1 hour under about 450 ℃, set up engaging between sheet metal and the glass, the thermal coefficient of expansion of metal sheet of Jie Heing and glass is like this: the thermal coefficient of expansion of sark is 99.0(10
-7/ ℃), the thermal coefficient of expansion of making the glass of pars infundibularis is 100.0(10
-7/ ℃), so, in sheet metal that engages and glass, do not stay distortion.Oxide layer is formed on each zone that sheet metal will engage welding glass, strengthened the joint capacity of welding glass thus, metal welds with line with metal and is connected, and obtains metal back shroud and is used as engaging between the sheet metal of sark with electric-resistance seam-welding.The part of welding to the greatest extent can be away from by the welding glass engaging portion, and this is in order to prevent the welding glass engaging portion owing to the heat in the welding process is out of shape, and prevents from that frit seal from taking off from these bonding parts to split.
According to above-mentioned color cathode ray tube, back shroud and skirt section and back shroud and pars infundibularis can be connected to each other reliably by welding glass and sheet metal.The thermal coefficient of expansion of the alloy of manufacturing sark is roughly the same with the glass of making pars infundibularis, has prevented the possibility of shell temperature distortion thus.
Although what weld metal and metal adopted is the line weldering.Other welding method such as plasma, laser and ultra-sonic welded also can adopt.
Although first and second sarks also can contain the alloy manufacturing of 52% nickel and 6% chromium with another kind with the alloy manufacturing that contains 50% nickel.The various variant parts of mentioning as first sark when describing shell of the present invention can adopt.
Though metallic plate is made tabular, it also can make the curved surface that same curvature is arranged with panel.Each gusset plate becomes L shaped, but when adopting other welding method such as arc-welding, plasma welding, just needn't make gusset plate L shaped, when back shroud is made 5mm when thick, the plate that just do not need reinforcement, in other words, when the bonnet thickness of slab when being enough to bear atmospheric pressure, just no longer need to use girth member.
Claims (10)
1, a kind of color cathode ray tube comprises:
A vacuum casting 40 has a plurality of pars infundibularises 50 that leading edge and trailing edge are arranged, 52, one of a plurality of necks on above-mentioned pars infundibularis trailing edge comprise panel 44 with inner surface and from above-mentioned panel edges the panel part 42 along the skirt section 46 of extending,
Phosphor screen 64 on panel inner surface,
Place near the shadow mask 66 of phosphor screen,
A plurality of electron guns 62 that lay respectively at neck,
It is characterized in that, described vacuum casting comprises the metal jockey 48 in the skirt section of a leading edge that is used to connect pars infundibularis and panel part, this metal jockey 48 has a cardinal plane that is arranged essentially parallel to above-mentioned panel inner surface, and a plurality of perforates corresponding to the pars infundibularis leading edge are positioned on the cardinal plane.
2, according to the color cathode ray tube of claim 1, it is characterized in that, a plurality ofly be used to strengthen the outer surface that the girth member 56 that bears the atmospheric pressure ability is added in above-mentioned metal jockey.
According to the color cathode ray tube of claim 1, it is characterized in that 3, above-mentioned metal jockey has the curvature identical with panel, leave certain distance with panel and perpendicular to the tubular axis setting.
4, according to the color cathode ray tube of claim 1, it is characterized in that, described metal jockey its with above-mentioned skirt section engaging portion and with another part that pars infundibularis engages between a step 59 is arranged, with above-mentioned pars infundibularis engaging portion than with above-mentioned far away from panel with the skirt section engaging portion.
5, a kind of color cathode ray tube comprises:
A vacuum casting 80 has a plurality of pars infundibularises 90 that leading edge and trailing edge are arranged, and 92, one of a plurality of necks on above-mentioned pars infundibularis trailing edge comprise panel 84 Hes with inner surface
Phosphor screen 124 on panel inner surface,
Place near the shadow mask 126 of phosphor screen,
A plurality of electron guns 122 that lay respectively at neck,
It is characterized in that, described shell comprises, the metal jockey 88 in the skirt section of leading edge that is used to connect pars infundibularis and panel part, this metal jockey 88 has a cardinal plane that is arranged essentially parallel to above-mentioned panel inner surface, and the perforate 99 that a plurality of leading edges corresponding to above-mentioned pars infundibularis are arranged is positioned at the above shell of cardinal plane and also comprises, a plurality ofly be used to serve as a contrast at the leading edge of pars infundibularis and first sark 98 between the metal jockey, its thermal coefficient of expansion is less than the metal jockey, and, a plurality of being used to serves as a contrast at the skirt section of panel part and second sark 100 between the metal jockey, and its thermal coefficient of expansion is less than the metal jockey.
According to the described color cathode ray tube of claim 5, it is characterized in that 6, a plurality of girth members 96 that are used to strengthen to bear the atmospheric pressure ability are added in the outer surface of described metal jockey.
According to the described color cathode ray tube of claim 5, it is characterized in that 7, the curvature of described metal jockey (curved surface) is basic identical with above-mentioned panel, and leaves above-mentioned panel certain distance, and perpendicular to the tubular axis setting.
According to the described color cathode ray tube of claim 5, it is characterized in that 8, each described first sark has a cylindrical portion and two from the outwardly directed disc-shaped part of this cylindrical portion both ends horizontal.
According to the described color cathode ray tube of claim 5, it is characterized in that 9, each described first sark has a cylindrical portion and two disc-shaped parts that inwardly stretch out from this cylindrical portion both ends horizontal.
10, according to the described color cathode ray tube of claim 5, it is characterized in that, each described first sark has a cylindrical portion and two disc-shaped parts, one of them inwardly stretches out from an end level of this cylindrical portion, and another part is protruding from the other end level of this cylindrical portion.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63213697A JP2752997B2 (en) | 1988-08-30 | 1988-08-30 | Cathode ray tube envelope and color picture tube |
| JP213696/88 | 1988-08-30 | ||
| JP63213696A JP2752996B2 (en) | 1988-08-30 | 1988-08-30 | Cathode ray tube envelope and color picture tube |
| JP213697/88 | 1988-08-30 | ||
| CN89106768A CN1013818B (en) | 1988-08-30 | 1989-08-26 | Envelope for colour cathode ray tube |
Related Parent Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN89106768 Division | 1989-08-26 | ||
| CN89106768A Division CN1013818B (en) | 1988-08-30 | 1989-08-26 | Envelope for colour cathode ray tube |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1055082A CN1055082A (en) | 1991-10-02 |
| CN1019715B true CN1019715B (en) | 1992-12-30 |
Family
ID=27178954
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 91101351 Expired CN1019715B (en) | 1988-08-30 | 1989-08-26 | Color cathode ray tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1019715B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW333368U (en) * | 1992-04-21 | 1998-06-01 | Toshiba Co Ltd | Image tube apparatus |
-
1989
- 1989-08-26 CN CN 91101351 patent/CN1019715B/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CN1055082A (en) | 1991-10-02 |
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