CN1129163C - Flat type CRT monitor device - Google Patents
Flat type CRT monitor device Download PDFInfo
- Publication number
- CN1129163C CN1129163C CN98116615A CN98116615A CN1129163C CN 1129163 C CN1129163 C CN 1129163C CN 98116615 A CN98116615 A CN 98116615A CN 98116615 A CN98116615 A CN 98116615A CN 1129163 C CN1129163 C CN 1129163C
- Authority
- CN
- China
- Prior art keywords
- deflection
- ray tube
- display part
- flat
- coil
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000010894 electron beam technology Methods 0.000 claims abstract description 9
- 230000000007 visual effect Effects 0.000 claims description 2
- 238000012544 monitoring process Methods 0.000 description 6
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 4
- 230000014509 gene expression Effects 0.000 description 4
- 229910000859 α-Fe Inorganic materials 0.000 description 3
- 238000010009 beating Methods 0.000 description 2
- 238000004904 shortening Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000000205 computational method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
- H01J29/46—Arrangements of electrodes and associated parts for generating or controlling the ray or beam, e.g. electron-optical arrangement
- H01J29/70—Arrangements for deflecting ray or beam
- H01J29/72—Arrangements for deflecting ray or beam along one straight line or along two perpendicular straight lines
- H01J29/76—Deflecting by magnetic fields only
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
- H01J29/86—Vessels; Containers; Vacuum locks
- H01J29/861—Vessels or containers characterised by the form or the structure thereof
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2229/00—Details of cathode ray tubes or electron beam tubes
- H01J2229/70—Electron beam control outside the vessel
- H01J2229/703—Electron beam control outside the vessel by magnetic fields
- H01J2229/7032—Conductor design and distribution
- H01J2229/7033—Winding
Landscapes
- Closed-Circuit Television Systems (AREA)
- Video Image Reproduction Devices For Color Tv Systems (AREA)
- Vessels And Coating Films For Discharge Lamps (AREA)
- Details Of Television Scanning (AREA)
- Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
- Transforming Electric Information Into Light Information (AREA)
- Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)
- Studio Devices (AREA)
Abstract
The present invention makes the displaying surface of flat type cathode ray tube to be about 1:1 in aspect ratio to thereby improve a displaying area of a supervisory monitor apparatus, which is formed of a funnel portion which is melt-bonded to the neck portion of a Braun tube and a luminous displaying portion whose upper portion is comprised of a fluorescent surface and a displaying surface, and which has horizontal and vertical deflecting coils provided in the neck portion. Since a rear end portion of the horizontal coil is made shorter toward the funnel portion by a length L than a rear end portion of a conventional deflecting coil, an electron beam scanning in the horizontal direction is prevented from colliding against the inner wall of the funnel portion, thereby making it possible that a drop-out of a picture does not occur even when a fluorescent film is made to be a picture surface having an aspect ratio of 1:1.
Description
Technical field
The present invention relates to monitor apparatus, particularly flat type CRT monitor device is used as the small-sized monitoring monitor with flat-shaped cathode-ray tube.
Background technology
As common picture tube (CRT), wherein arrive phosphor screen from electron gun electrons emitted bundle, from phosphor screen a long degree of depth is arranged, in narrow space, it is very difficult as rig camera that such picture tube is installed.
Like this, as undersized monitoring arrangement, flat and slim cathode ray tube realized, in it from electron gun electrons emitted bundle basically with watch fluoroscopic direction vertical.
Figure 1A and 1B show the end view and the vertical view of this flat-shaped cathode-ray tube respectively.Wherein with reference to digital 1 expression neck, with reference to digital 2 expression funnel part, with reference to digital 3 expression luminous displaing part branches.
Inwall at luminous component 3 forms fluorescence thin layer 4, and when electron beam was beaten on fluorescence thin layer 4, luminous component 3 produced the light emission, and its upper surface formation transparent part 5, makes that the luminous point on fluorescence thin layer 4 is visible.
Be installed in the deflection device of neck 1 with reference to digital 6 expressions, it and common deflection device are similar, are made of a deflecting coil 6a and FERRITE CORE 6b.
As well-known, flat-shaped cathode-ray tube above-mentioned is provided with like this, make when level and vertical yoke current being provided for deflecting coil 6a, shown in solid line, left and right from electron gun electrons emitted bundle, upper and lower swing and beating on fluorescence thin layer 4 like this, forms the rectangle picture screen of about 4: 3 ratios of a profile at last.
Above-mentioned this flat-shaped cathode-ray tube can be installed on the wall or be similar on the object of wall or be contained in the casing, like this, look from the aspect of display surface 5, picture screen is visible, and it is particularly suited for as monitoring camera or portable display spare in the room.
For example, shown in Fig. 2 A, a monitoring ccd video camera 11 is installed at entrance door 10 places of mansion or analog, and, can in door 10, see visitor 12 full-length picture by being installed in the vision signal that shows the visitor 12 that ccd video camera 11 takes on the monitor that wall inlet or similarity have flat cathode-ray tube.
By the way, structure as traditional flat cathode-ray tube, its display surface becomes and 3: 4 identical appearance proportions of television image screen, therefore, the full-length picture of display access person 12 is difficult, thereby, it needs some device rig camera that fluctuates, like this, the mechanism of the rig camera that need fluctuate, thereby problem with regard to existing the motor apparatus price to rise.
In addition, also visitor's full-length picture can be shown by using wide-angle lens, still, in this case, because display access person 12 on 3: 4 display image screen of appearance proportion shown in Fig. 2 B, exists visitor 12 face-image to diminish and the identity variation.
Then, can imagine monitor apparatus is made large-scale,, because the flat-shaped cathode-ray tube of today shows such structure with 3: 4 appearance proportion, even widen phosphor screen simply, scan fluoroscopic electron beam and rebounded, therefore, the problem of missing image occurred at place, picture screen angle by funnel part.
Summary of the invention
In view of the above problems, the purpose of this invention is to provide the flat-shaped cathode-ray tube monitoring arrangement, wherein shorten afterbody behind the deflecting coil near the length on the direction of the funnel shaped part of cathode ray tube.To become an appearance proportion be 1: 1 display part to the display surface of flat cathode-ray tube like this, thereby, the problem above having solved at an easy rate.
Like this, top monitor apparatus can realize being shown as effectively the vision signal that monitor access person takes by video camera.
The object of the present invention is achieved like this, a kind of flat type CRT monitor device promptly is provided, comprises the display part, its appearance proportion is set becomes 1: 1, described cathode ray tube is equipped with horizontal deflection coil, and described horizontal deflection coil is contained on the funnel part of flat-shaped cathode-ray tube; And
The rear end (24A) of described horizontal deflection coil (24) is shortened, make the more close described display part, deflection center of horizontal direction, make: L/2=Y, Y 〉=A * (X/Z), wherein L is the length that shortens, Y is the amount of movement of mind-set display part one side in the deflection, A is the amount lost of image when the deflection center is motionless, X is a mind-set display part opposition side amount of movement in the deflection, Z is the visual amount lost that increases when mind-set display part opposition side moves in the deflection, thereby avoids the inwall of electron beam and funnel part to collide and generation missing image phenomenon.By shortening the tail portion of deflecting coil, the generation of the missing image that can avoid when the horizontal sweep funnel part of electron beam and flat-shaped cathode-ray tube to collide causing, it is about 1: 1 ratio that the display image screen of flat-shaped cathode-ray tube can be arranged to profile at an easy rate; When being used as the monitoring arrangement of surveillance camera, can strengthen its effective picture area.
Description of drawings
Figure 1A and Figure 1B show the plane graph and the end view of flat-shaped cathode-ray tube respectively;
Fig. 2 A and Fig. 2 B show a monitored video camera of visitor key-drawing that photograph and that be presented at the image on the monitor apparatus respectively;
Fig. 3 is the plane graph according to platypelloid type monitor apparatus of the present invention;
Fig. 4 is the sketch that is used for explaining missing image when appearance proportion is set at 1: 1;
Fig. 5 is the sketch that is used to set the deflecting coil position;
Fig. 6 is the magnetic field intensity figure of deflecting coil.
Embodiment
Fig. 3 shows the plane graph of the example of a foundation platypelloid type monitor apparatus 20 of the present invention.
In this example, monitor 20 is made of cathode ray tube BT, and it is to constitute by neck 21 with neck 21 welding all-in-one-piece funnel part 22, and its top such as above-mentioned shown in Figure 1 forms the luminous displaing part of being made up of phosphor screen and display surface and divides 23.
Be provided with horizontal deflection coil 24 and frame deflector coil 25 at neck 21 places.Horizontal deflection coil 24 is to be formed by the inwall of a branch of saddle coil along FERRITE CORE 26, and frame deflector coil 25 is made of the coil with respect to FERRITE CORE 26 annular coilings.
The tail portion 24A that is characterised in that above-mentioned horizontal deflection coil 24 according to flat type CRT monitor 20 of the present invention lacks L than common horizontal deflection coil on the direction of funnel part 22.
That is,, will shorten afterbody 24A to B line thereafter according to horizontal deflection line coil 24 of the present invention when the back afterbody of the horizontal deflection coil with flat-shaped cathode-ray tube of 4: 3 of normal configuration ratio is assumed to be when being positioned at the A line.So that being shortened the horizontal deflection coil of length L, the deflection center on the horizontal direction moves forward.Therefore, even when display image screen is set at about 1: 1 appearance proportion, the phenomenon of missing image can not take place also, this will describe following.
As shown in Figure 4, the image display screen of ordinary flat type cathode ray tube is set become 1: 1 appearance proportion (set in this manner make have to become about 1: 1 luminous displaing part of appearance proportion divide 23 funnel part 22 to be fused into one) with the neck 21 that comprises electron gun 7.When deflection current, there is a grating to be presented on the whole fluorescent surface of picture screen, rebounded by the inner wall section of funnel part 22 beating at fluorescent surface oblique line electron beam partly of grating than lower curtate, like this, missing image has just taken place.
Then, under situation of the present invention, the tail portion 24A of horizontal deflection coil 24 has been shortened at least, thus with the deflection center on the horizontal direction from P
1Change to P
2, like this, just the missing image phenomenon can not take place.
Fig. 5 show for electron beam not by funnel part 22 inwalls rebound the computational methods of the length L that will shorten.In Fig. 5, when using common horizontal deflection coil, some P
1Be deflection center, on about 1: 1 display surface of appearance proportion, have missing image A.
In this case, make deflection center arrive P if readjust whole deflection device
3Point, the missing image part further increases Z, and like this, total missing image partly becomes (Z+A).
And, if deflection center is from P
1Shift to an earlier date Y, deflection center is at P like this
2Point, missing image promptly is eliminated.
According to this, for removal of images is lost, the amount of movement Y of deflection center becomes Y=A * (X/Z).
Fig. 6 shows the magnetic field intensity that shortens deflecting coil and do not shorten deflecting coil.
Can see that as Fig. 6 suppose that the left side is the display surface side, the right side is the neck side, when not shortening deflecting coil, the peak point in the magnetic field of deflecting coil is P
11(this point is corresponding to deflection center), when the back afterbody of deflecting coil has shortened L, the magnetic field peak point P of deflecting coil
12(deflection center) to the fluorescent surface side shifting about L/2.
Correspondingly, make L/2=Y set up by the back afterbody that shortens deflecting coil, as shown in Figure 4, setting electron beam is not possible by the bounce-back of the inwall of the funnel part 22 of cathode ray tube.Therefore, extend in vertical direction that a certain amount of appearance proportion that makes of demonstration length of fluorescent surface is about 1: 1st, possible.
Along with the fluorescence display surface becomes about 1: 1 appearance proportion, when a visitor is taken through moving into one's husband's household upon marriage by common rig camera, as previously mentioned shown in Fig. 2 A, more easily make visitor's full-length picture be full of the entire image screen, and,, its face is shown that it is possible amplifying even under the situation of small sized monitor device, therefore, its convenient application.
In addition, as prior art, the position of deflecting coil and CRT anode can keep the distance of being scheduled to, and can not resemble the trouble of discharge or similar phenomenon.
With reference to accompanying drawing the preferred embodiments of the present invention have been described, be to be understood that, the present invention is not limited to the above embodiments, and under the spirit and scope of the present invention that do not break away from the claims definition, those skilled in the art can make various changes and modifications.
Claims (2)
1. a flat type CRT monitor device comprises the display part, and its appearance proportion is set becomes 1: 1, and described cathode ray tube is equipped with horizontal deflection coil, and described horizontal deflection coil is contained on the funnel part of flat-shaped cathode-ray tube; And
The rear end (24A) of described horizontal deflection coil (24) is shortened, make the more close described display part, deflection center of horizontal direction, make: L/2=Y, Y 〉=A * (X/Z), wherein L is the length that shortens, Y is the amount of movement of mind-set display part one side in the deflection, A is the amount lost of image when the deflection center is motionless, X is a mind-set display part opposition side amount of movement in the deflection, Z is the visual amount lost that increases when mind-set display part opposition side moves in the deflection, thereby avoids the inwall of electron beam and funnel part to collide and generation missing image phenomenon.
2. according to the flat type CRT monitor device of claim 1, the vision signal that video camera took that wherein said monitor apparatus setting feasible is used to monitor the visitor is presented at the display part of described flat-shaped cathode-ray tube fully.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9204254A JPH1154071A (en) | 1997-07-30 | 1997-07-30 | Flat cathode-ray tube monitor device |
| JP204254/97 | 1997-07-30 | ||
| JP204254/1997 | 1997-07-30 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1206928A CN1206928A (en) | 1999-02-03 |
| CN1129163C true CN1129163C (en) | 2003-11-26 |
Family
ID=16487424
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN98116615A Expired - Fee Related CN1129163C (en) | 1997-07-30 | 1998-07-28 | Flat type CRT monitor device |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JPH1154071A (en) |
| KR (1) | KR19990014286A (en) |
| CN (1) | CN1129163C (en) |
| IT (1) | IT1302414B1 (en) |
| TW (1) | TW398008B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3612907B2 (en) * | 1996-12-16 | 2005-01-26 | ソニー株式会社 | Flat type cathode ray tube and flat type cathode ray tube apparatus |
-
1997
- 1997-07-30 JP JP9204254A patent/JPH1154071A/en not_active Withdrawn
-
1998
- 1998-07-16 TW TW087111614A patent/TW398008B/en active
- 1998-07-28 CN CN98116615A patent/CN1129163C/en not_active Expired - Fee Related
- 1998-07-30 IT IT1998RM000509A patent/IT1302414B1/en active IP Right Grant
- 1998-07-30 KR KR1019980030779A patent/KR19990014286A/en not_active Application Discontinuation
Also Published As
| Publication number | Publication date |
|---|---|
| ITRM980509A1 (en) | 2000-01-30 |
| TW398008B (en) | 2000-07-11 |
| JPH1154071A (en) | 1999-02-26 |
| CN1206928A (en) | 1999-02-03 |
| KR19990014286A (en) | 1999-02-25 |
| IT1302414B1 (en) | 2000-09-05 |
| ITRM980509A0 (en) | 1998-07-30 |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| REG | Reference to a national code |
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