CN201286189Y - Multiple strip lamp backlight apparatus and transformer thereof - Google Patents
Multiple strip lamp backlight apparatus and transformer thereof Download PDFInfo
- Publication number
- CN201286189Y CN201286189Y CNU2008201315244U CN200820131524U CN201286189Y CN 201286189 Y CN201286189 Y CN 201286189Y CN U2008201315244 U CNU2008201315244 U CN U2008201315244U CN 200820131524 U CN200820131524 U CN 200820131524U CN 201286189 Y CN201286189 Y CN 201286189Y
- Authority
- CN
- China
- Prior art keywords
- coil
- transformer
- drum stand
- magnetic core
- magnetic
- 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
Images
Landscapes
- Circuit Arrangements For Discharge Lamps (AREA)
Abstract
The utility model a multiple lighting tube backlight device and a transformer thereof. The transformer comprises a core group, a first bobbin bracket, a second bobbin bracket, a third bobbin bracket, a main coil, a first coil and a second coil. The core group comprises a first magnetic core part and a second magnetic core part which are connected. The first bobbin bracket, the second bobbin bracket and the third bobbin bracket are respectively arranged at the first position, the second position and the third position of the core group, which are respectively corresponding to the first magnetic circuit, the second magnetic circuit and the third magnetic circuit formed by the core group. The main coil is wound around the first bobbin bracket; the first coil and the second coil are respectively wound on the second bobbin bracket, the third bobbin bracket.
Description
Technical field
The utility model relates to a kind of transformer, and particularly relate to a kind of in order to the balance lamp current transformer and use many fluorescent tubes back lighting device of this transformer.
Background technology
In recent years, along with the size of display panels constantly increases, (the high-quality light source that provides display panels required is provided more widely for ColdCathode Fluorescent Lamp, back lighting device CCFL) to comprise a plurality of cold cathode fluorescent lamp.
In actual applications, for the quantity that reduces the employed transformer of many fluorescent tubes back lighting device to reduce production cost, in many fluorescent tubes back lighting device, have a transformer that pushes away a form traditionally and had one gradually and push away two forms even and push away multi-form transformer and replace.
Please refer to Fig. 1, Fig. 1 illustrates tradition and is applied to have in many fluorescent tubes back lighting device a framework that pushes away the transformer of two forms.As shown in Figure 1, transformer 1 comprises main coil 11, for the first time coil 12, coil 13, first drum stand 14, second drum stand 15, the 3rd drum stand 16, first magnetic core 17 and second magnetic core 18 for the second time.Wherein main coil 11 will be coupled to the power supply of many fluorescent tubes back lighting device, and for the first time coil 12 with the second time coil 13 will be coupled to the different fluorescent tubes of many fluorescent tubes back lighting device respectively.In transformer 1, first drum stand 14, second drum stand 15 and the 3rd drum stand 16 all are arranged under first magnetic core 17 and second magnetic core, the 18 formed same magnetic circuits, and main coil 11, for the first time coil 12 is set around respectively on first drum stand 14, second drum stand 15 and the 3rd drum stand 16 with coil 13 for the second time.
Please refer to Fig. 2, Fig. 2 illustrates has an another kind of framework that pushes away the transformer of two forms in traditional many fluorescent tubes back lighting device.As shown in Figure 2, transformer 2 comprises main coil 21, for the first time coil 22, coil 23, first drum stand 24, second drum stand 25, the 3rd drum stand 26, first magnetic core 27 and second magnetic core 28 for the second time.Wherein main coil 21 will be coupled to the power supply of many fluorescent tubes back lighting device, and for the first time coil 22 with the second time coil 23 will be coupled to the different fluorescent tubes of many fluorescent tubes back lighting device respectively.In transformer 2, first drum stand 24 is arranged under first magnetic core 27 and second magnetic core, 28 formed first magnetic circuits; Second drum stand 25 and 26 of the 3rd drum stands all are arranged under first magnetic core 27 and second magnetic core, 28 formed second magnetic circuits.Main coil 21 is set around on first drum stand 24; For the first time coil 22 is set around respectively on second drum stand 25 and the 3rd drum stand 26 with 23 of coils for the second time.
Yet, no matter many fluorescent tubes back lighting device adopts Fig. 1 or transformer framework shown in Figure 2, because the luminosity of each fluorescent tube in many fluorescent tubes back lighting device is relevant with the lamp current of this fluorescent tube of flowing through, therefore, the fluorescent tube number of controlling along with each transformer continues to increase, it is inhomogeneous with the luminosity of avoiding each fluorescent tube about equally that each lamp tube current of flowing through is kept, and just becomes the biggest problem that present many fluorescent tubes back lighting device is faced.
The utility model content
The purpose of this utility model is many fluorescent tubes back lighting device of a kind of transformer being provided and using this transformer, to address the above problem.
The purpose of this utility model is to realize like this, the many fluorescent tubes back lighting device that a kind of transformer promptly is provided and uses this transformer, this transformer can have one to be pushed away two, one and pushes away four or one and push away many forms, is a kind of transformer that pushes away two forms that has according to a specific embodiment of the present utility model.This transformer comprises core group, first drum stand, second drum stand, the 3rd drum stand, main coil, coil and coil for the second time for the first time.
In this embodiment, the core group is to be engaged with the second magnetic core portion and constituted by the first magnetic core portion.First drum stand, second drum stand and the 3rd drum stand then are arranged at respectively on primary importance, the second place and the 3rd position of core group.Wherein primary importance, the second place and the 3rd position correspond respectively to formed first magnetic circuit of core group, second magnetic circuit and the 3rd magnetic circuit.Be set around on first drum stand as for main coil; For the first time coil and for the second time coil then be set around respectively on second drum stand and the 3rd drum stand.
In actual applications, this transformer can further comprise first balance coil and second balance coil.Wherein first balance coil is set around on second drum stand and second balance coil is set around on the 3rd drum stand, and first balance coil and second balance coil are coupled to each other to form a loop.
According to another specific embodiment of the present utility model is a kind of many fluorescent tubes back lighting device.This many fluorescent tubes back lighting device comprises power supply, first fluorescent tube, second fluorescent tube and transformer.Wherein transformer has one and pushes away two form, and power supply, first fluorescent tube and second fluorescent tube all are coupled to transformer.This transformer comprises core group, first drum stand, second drum stand, the 3rd drum stand, main coil, coil and coil for the second time for the first time.
In this embodiment, this core group is to be engaged with the second magnetic core portion and constituted by the first magnetic core portion.First drum stand, second drum stand and the 3rd drum stand then are arranged at respectively on primary importance, the second place and the 3rd position of core group.Wherein primary importance, the second place and the 3rd position correspond respectively to formed first magnetic circuit of core group, second magnetic circuit and the 3rd magnetic circuit.Be set around on first drum stand and main coil is coupled to power supply as for main coil; For the first time coil and for the second time coil then be set around on second drum stand and the 3rd drum stand respectively and for the first time coil and for the second time coil be coupled to first fluorescent tube and second fluorescent tube respectively.
In actual applications, this transformer can further comprise first balance coil and second balance coil.Wherein first balance coil is set around on second drum stand and second balance coil is set around on the 3rd drum stand, and first balance coil and second balance coil are coupled to each other to form a loop.
Advantage of the present utility model is, be compared to background technology, according to transformer of the present utility model can be to have one to push away two, one and push away four even one and push away multi-form transformer, and its phenomenon of keeping about equally with the brightness disproportionation of avoiding each fluorescent tube takes place in the lamp current of each fluorescent tube of equiulbrium flow in many fluorescent tubes back lighting device effectively.Thus, use quantity that many fluorescent tubes back lighting device of this transformer not only can reduce its required transformer, also can provide display panels brightness even and stable high-quality light source to reduce cost.
Can be further understood by following utility model detailed description and appended accompanying drawing about advantage of the present utility model and spirit.
Description of drawings
Fig. 1 and Fig. 2 are illustrated in respectively to have different frameworks that push away the transformer of two forms in the background technology;
Fig. 3 is the schematic diagram that illustrates according to the framework of the transformer of first specific embodiment of the present utility model;
Fig. 4 is the schematic diagram that illustrates according to the framework of the transformer of second specific embodiment of the present utility model;
Fig. 5 is the schematic diagram that illustrates according to the framework of the transformer of the 3rd specific embodiment of the present utility model;
Fig. 6 is the schematic diagram that illustrates according to the framework of the transformer of the 4th specific embodiment of the present utility model;
Fig. 7 is the schematic diagram that illustrates according to the framework of many fluorescent tubes back lighting device of the 5th specific embodiment of the present utility model;
Fig. 8 is the schematic diagram that illustrates according to the framework of many fluorescent tubes back lighting device of the 6th specific embodiment of the present utility model.
The main element symbol description
1～5,7,94,104: transformer 9,10: many fluorescent tubes back lighting device
11,21,31,41,51,71,941,1041: main coil
12,22,32,42,52,72,942,1042: coil for the first time
13,23,33,43,53,73,943,1043: coil for the second time
54,74: coil 55,75: the four times coils for the third time
48,82,1044: the first balance coils 49,83,1045: the second balance coils
85: the Siping City of 84: the three balance coils weighing apparatus coil
14,24,34,44,56,76: the first drum stands
15,25,35,45,57,77: the second drum stands
16,26,36,46,58,78: the three drum stands
59,79: the four drum stands 60,80: the five drum stands
37,47,61,81: core group 90,100: power supply
17,27,371,471,611,811: the first magnetic core portions
18,28,372,472,612,812: the second magnetic core portions
93,103: full-bridge/half-bridge circuit
Embodiment
Many fluorescent tubes back lighting device that the utility model provides a kind of transformer and uses this transformer.In fact, this transformer can be to have one to push away two, one and push away four or one and push away multi-form transformer.According to first specific embodiment of the present utility model is a kind of transformer that pushes away two forms that has.Please refer to Fig. 3, Fig. 3 is the schematic diagram that illustrates the framework of this transformer.As shown in Figure 3, transformer 3 comprises main coil 31, for the first time coil 32, coil 33, first drum stand 34, second drum stand 35, the 3rd drum stand 36 and core group 37 for the second time.Next, each element that is comprised with regard to transformer 3 respectively is described in detail.
In this embodiment, the core group 37 of transformer 3 is to be engaged with the second magnetic core portion 372 and constituted by the first magnetic core portion 371.In fact, the first magnetic core portion 371 can only be made of an E font magnetic core or by two ㄇ font magnetic core be combined intos.In like manner, the second magnetic core portion 372 also can be made of or by two ㄇ font magnetic core be combined intos an E font magnetic core.
In addition, first drum stand 34, second drum stand 35 and the 3rd drum stand 36 of transformer 3 are arranged at respectively on three diverse locations of core group 37.Wherein these three diverse locations will correspond respectively to core group 37 formed first magnetic circuits, second magnetic circuit and the 3rd magnetic circuit.Main coil 31 as for transformer 3 is set around on first drum stand 34; For the first time coil 32 and for the second time 33 of coils be set around respectively on second drum stand 35 and the 3rd drum stand 36.That is to say, the main coil 31 of transformer 3, for the first time coil 32 and for the second time coil 33 will lay respectively under core group 37 formed three different magnetic circuits.Be compared to Fig. 1 and Fig. 2, the framework of transformer 3 will be very different with the transformer 1 of background technology and the structure of transformer 2.
Also has a transformer that pushes away two forms according to second specific embodiment of the present utility model for a kind of.This embodiment and the first specific embodiment difference are that transformer will further comprise balance coil.Please refer to Fig. 4, Fig. 4 is the schematic diagram that illustrates the framework of this transformer.As shown in Figure 4, transformer 4 comprises main coil 41, for the first time coil 42, coil 43, first drum stand 44, second drum stand 45, the 3rd drum stand 46, core group 47, first balance coil 48 and second balance coil 49 for the second time.Next, each element that is comprised with regard to transformer 4 respectively is introduced.
In this embodiment, core group 47 is to be engaged with the second magnetic core portion 472 and constituted by the first magnetic core portion 471.In fact, the first magnetic core portion 471 can be made of or by two ㄇ font magnetic core be combined intos an E font magnetic core.In like manner, the second magnetic core portion 472 also together.
In this embodiment, first drum stand 44, second drum stand 45 and the 3rd drum stand 46 of transformer 4 are arranged at respectively on three diverse locations of core group 47, and these three diverse locations correspond respectively to core group 47 formed three different magnetic circuits.Because the main coil 41 of transformer 4 is set around on first drum stand 44, and for the first time coil 42 and for the second time coil 43 be set around respectively on second drum stand 45 and the 3rd drum stand 46, therefore, this representing the main coil 41 of transformer 4, for the first time coil 42 and for the second time coil 43 lay respectively under three different magnetic circuits.
Be that as for this embodiment and the maximum difference of first specific embodiment transformer 4 has further comprised first balance coil 48 and second balance coil 49.Wherein first balance coil 48 all is set around on second drum stand 45 with coil 42 is the same for the first time; 49 of second balance coils all are set around on the 3rd drum stand 46 with coil 43 is identical for the second time.That is to say, first balance coil 48 corresponding to the first time coil 42 and second balance coil 49 corresponding to coil 43 second time.
In fact, if transformer 4 is applied in the back lighting device of fluorescent tube more than, first balance coil 48 of transformer 4 and second balance coil 49 will be coupled to each other to form a loop, transformer 4 promptly makes each lamp current of this many fluorescent tubes back lighting device reach roughly the same by a balanced balanced current in this loop of flowing through, thus, this many fluorescent tubes back lighting device can provide display panels stable and even brightness light source.
According to the 3rd specific embodiment of the present utility model is a kind of transformer that pushes away four forms that has.Please refer to Fig. 5, Fig. 5 is the schematic diagram that illustrates the framework of this transformer.As shown in Figure 5, transformer 5 comprises main coil 51, for the first time coil 52, coil 53, coil 54, the 4th coil 55, first drum stand 56, second drum stand 57, the 3rd drum stand 58, the 4th drum stand 59, the 5th drum stand 60 and core group 61 for the third time for the second time.
In this embodiment, the core group 61 of transformer 5 is to be engaged with the second magnetic core portion 612 and constituted by the first magnetic core portion 611.In fact, the composition mode of the first magnetic core portion 611 can have a variety of.For example, the first magnetic core portion 611 can be combined by two E font magnetic cores; The first magnetic core portion 611 also can be combined by an E font magnetic core and two ㄇ font magnetic cores; In addition, also can adopt four ㄇ font magnetic core set to synthesize the first magnetic core portion 611.In like manner, the second magnetic core portion 612 also has above-mentioned various possible combination situations.
In addition, as shown in Figure 5, first drum stand 56, second drum stand 57, the 3rd drum stand 58, the 4th drum stand 59 and the 5th drum stand 60 of transformer 5 are arranged at respectively on five diverse locations of core group 61.Wherein these five diverse locations will correspond respectively to core group 61 formed five different magnetic circuits (that is first magnetic circuit to the, five magnetic circuits).
In this embodiment, the main coil 51 of transformer 5 is set around on first drum stand 56; For the first time coil 52, for the second time coil 53, coil 54 and the 4th coil 55 are set around respectively on second drum stand 57, the 3rd drum stand 58, the 4th drum stand 59 and the 5th drum stand 60 for the third time.That is to say, the main coil 51 of transformer 5, for the first time coil 52, for the second time coil 53, coil 54 and the 4th coil 55 will lay respectively under core group 61 formed five different magnetic circuits for the third time.
It should be noted that in background technology the main coil of transformer and all times coil may all be positioned under the same magnetic circuit, or the main coil of transformer is positioned at, and all times coil is positioned at then under another magnetic circuit under the magnetic circuit.Hence one can see that, and the framework of the transformer that the framework of the described transformer 5 of this embodiment and background technology are adopted has a great difference part.
Also has a transformer that pushes away four forms according to the 4th specific embodiment of the present utility model for a kind of.This embodiment and the 3rd specific embodiment difference are that transformer will further comprise balance coil.Please refer to Fig. 6, Fig. 6 is the schematic diagram that illustrates the framework of this transformer.As shown in Figure 6, transformer 7 comprises main coil 71, for the first time coil 72, coil 73, coil 74, the 4th coil 75, first drum stand 76, second drum stand 77, the 3rd drum stand 78, the 4th drum stand 79, the 5th drum stand 80, core group 81, first balance coil 82, second balance coil 83, the 3rd balance coil 84 and Siping City's weighing apparatus coil 85 for the third time for the second time.
In this embodiment, the core group 81 of transformer 7 is to be engaged with the second magnetic core portion 812 and constituted by the first magnetic core portion 811.In fact, the composition mode of the first magnetic core portion 811 can have a variety of.For example, the first magnetic core portion 811 can be combined by two E font magnetic cores; The first magnetic core portion 811 also can be combined by an E font magnetic core and two ㄇ font magnetic cores; In addition, also can be in conjunction with four ㄇ font magnetic cores to form the first magnetic core portion 811.In like manner, the second magnetic core portion 812 also has above-mentioned various possible combination situations.
As shown in Figure 6, first drum stand 76, second drum stand 77, the 3rd drum stand 78, the 4th drum stand 79 and the 5th drum stand 80 of transformer 7 are arranged at respectively on five diverse locations of core group 81.Wherein these five diverse locations will correspond respectively to core group 81 formed five different magnetic circuits (that is first magnetic circuit to the, five magnetic circuits).
In this embodiment, the main coil 71 of transformer 7 is set around on first drum stand 76; For the first time coil 72, for the second time coil 73, coil 74 and the 4th 75 of coil are set around respectively on second drum stand 77, the 3rd drum stand 78, the 4th drum stand 79 and the 5th drum stand 80 for the third time.That is the main coil 71 of transformer 7, for the first time coil 72, for the second time coil 73, coil 74 and the 4th coil 75 will lay respectively under core group 81 formed five different magnetic circuits for the third time.
Be promptly that as for this embodiment and the maximum difference of the 3rd specific embodiment compared to transformer 5, transformer 7 has further comprised first balance coil 82, second balance coil 83, the 3rd balance coil 84 and Siping City's weighing apparatus coil 85.Wherein first balance coil 82 all is set around on second drum stand 77 with coil 72 is the same for the first time; Second balance coil 83 all is set around on the 3rd drum stand 78 with coil 73 is identical for the second time; The 3rd balance coil 84 all is set around on the 4th drum stand 79 with coil 74 is the same for the third time; Siping City's weighing apparatus coil 85 is identical with the 4th coil 75, all is set around on the 5th drum stand 80.That is to say that first balance coil 82 is corresponding to coil 72 first time; Second balance coil 83 is corresponding to coil 73 second time; The 3rd balance coil 84 is corresponding to coil 74 for the third time; Siping City's weighing apparatus coil 85 is corresponding to the 4th coil 75.
In fact, if transformer 7 is applied in the back lighting device of fluorescent tube more than, first balance coil 82 of transformer 7, second balance coil 83, the 3rd balance coil 84 and Siping City's weighing apparatus coil 85 will couple mutually to form a loop.Transformer 7 promptly makes each lamp current of this many fluorescent tubes back lighting device reach roughly the same by a balanced balanced current in this loop of flowing through, and thus, this many fluorescent tubes back lighting device can provide display panels stable and even brightness light source.
According to the 5th specific embodiment of the present utility model is a kind of many fluorescent tubes back lighting device.This many fluorescent tubes back lighting device comprises and has a transformer that pushes away two forms.Please refer to Fig. 7, Fig. 7 is the schematic diagram that illustrates the framework of this many fluorescent tubes back lighting device.As shown in Figure 7, many fluorescent tubes back lighting device 9 comprises power supply 90, first fluorescent tube 91, second fluorescent tube 92, full-bridge/half-bridge circuit 93 and transformer 94.
In this embodiment because transformer 94 has one and pushes away two form, so transformer 94 can comprise main coil 941, for the first time coil 942 and the second time coil 943.Wherein main coil 941 can be coupled to power supply 90 by full-bridge/half-bridge circuit 93; For the first time coil 942 and for the second time 943 of coils can be coupled to first fluorescent tube 91 and second fluorescent tube 92 respectively.Detailed structure as for transformer 94 then can be given unnecessary details at this no longer separately with reference to transformer shown in Figure 33.
According to the 6th specific embodiment of the present utility model also is a kind of many fluorescent tubes back lighting device.This many fluorescent tubes back lighting device comprises and has a transformer that pushes away two forms.This embodiment and the 5th specific embodiment difference are that transformer further comprises balance coil.Please refer to Fig. 8, Fig. 8 is the schematic diagram that illustrates the framework of this many fluorescent tubes back lighting device.As shown in Figure 8, many fluorescent tubes back lighting device 10 comprises power supply 100, first fluorescent tube 101, second fluorescent tube 102, full-bridge/half-bridge circuit 103 and transformer 104.
In this embodiment because transformer 104 has one and pushes away two form and comprise balance coil, so transformer 104 can comprise main coil 1041, for the first time coil 1042, the second time coil 1043, first balance coil 1044 and second balance coil 1045.Wherein main coil 1041 can be coupled to power supply 100 by full-bridge/half-bridge circuit 103; For the first time coil 1042 and for the second time 1043 of coils can be coupled to first fluorescent tube 101 and second fluorescent tube 102 respectively; First balance coil 1044 and second balance coil 1045 will be coupled to each other to form a loop.Detailed structure as for transformer 104 then can be given unnecessary details at this no longer separately with reference to transformer shown in Figure 44.
In like manner, the foregoing description is also applicable to having a many fluorescent tubes back lighting device that pushes away the transformer of four forms.Suppose that many fluorescent tubes back lighting device comprises four fluorescent tubes and transformer as shown in Figure 55.Wherein the main coil 51 of transformer 5 will be coupled to the power supply of many fluorescent tubes back lighting device by full-bridge/half-bridge circuit; For the first time coil 52, for the second time coil 53, coil 54 and the 4th 55 of coil can be coupled to four fluorescent tubes of many fluorescent tubes back lighting device respectively for the third time.
In addition, the transformer 5 of above-mentioned many fluorescent tubes back lighting device also can further comprise four balance coils, that is as transformer shown in Figure 67.In fact, these four balance coils will couple mutually to form a loop.This many fluorescent tubes back lighting device can make each lamp current reach roughly the same by a balanced balanced current in this loop of flowing through, to provide display panels stable and even brightness light source.
Being compared to background technology, can be to have one to push away two, one and push away according to transformer of the present utility model Four even one push away multi-form transformer, and effectively equiulbrium flow in many lamp tube backlight devices The lamp current of each fluorescent tube makes it keep about equally phenomenon with the brightness disproportionation of avoiding each fluorescent tube Take place. Thus, many lamp tube backlight devices of using this transformer not only can reduce the number of its required transformer Amount also can provide display panels even and stable high-quality light source to reduce cost.
Claims (33)
1, a kind of transformer is characterized in that, this transformer comprises: the core group is engaged with one second magnetic core portion and is constituted by one first magnetic core portion; First drum stand is arranged on the primary importance of this core group, and this primary importance is corresponding to formed one first magnetic circuit of this core group; Second drum stand is arranged on the second place of this core group, and this second place is corresponding to formed one second magnetic circuit of this core group; The 3rd drum stand is arranged on one the 3rd position of this core group, and the 3rd position is corresponding to formed one the 3rd magnetic circuit of this core group; Main coil is set around on this first drum stand; Coil is set around on this second drum stand for the first time; And coil for the second time, be set around on the 3rd drum stand.
2, transformer as claimed in claim 1 is characterized in that, this transformer application is in the back lighting device of fluorescent tube more than.
3, transformer as claimed in claim 1 is characterized in that, this first magnetic core portion comprises an E font magnetic core.
4, transformer as claimed in claim 1 is characterized in that, this first magnetic core portion comprises two ㄇ font magnetic cores.
5, transformer as claimed in claim 1 is characterized in that, this second magnetic core portion comprises an E font magnetic core.
6, transformer as claimed in claim 1 is characterized in that, this second magnetic core portion comprises two ㄇ font magnetic cores.
7, transformer as claimed in claim 1 is characterized in that, this main coil is coupled to a power supply.
8, transformer as claimed in claim 1 is characterized in that, this first time coil be coupled to one first fluorescent tube and this second time coil be coupled to one second fluorescent tube.
9, transformer as claimed in claim 1 is characterized in that, this transformer further comprises: first balance coil is set around on this second drum stand; And second balance coil, be set around on the 3rd drum stand; Wherein this first balance coil and this second balance coil are coupled to each other to form a loop.
10, transformer as claimed in claim 1 is characterized in that, this transformer further comprises: the 4th drum stand, be arranged on one the 4th position of this core group, and the 4th position is corresponding to formed one the 4th magnetic circuit of this core group; The 5th drum stand is arranged on one the 5th position of this core group, and the 5th position is corresponding to formed one the 5th magnetic circuit of this core group; Coil is set around on the 4th drum stand for the third time; And the 4th coil, be set around on the 5th drum stand.
11, transformer as claimed in claim 10 is characterized in that, this first magnetic core portion comprises two E font magnetic cores.
12, transformer as claimed in claim 10 is characterized in that, this first magnetic core portion comprises an E font magnetic core and two ㄇ font magnetic cores.
13, transformer as claimed in claim 10 is characterized in that, this first magnetic core portion comprises four ㄇ font magnetic cores.
14, transformer as claimed in claim 10 is characterized in that, this second magnetic core portion comprises two E font magnetic cores.
15, transformer as claimed in claim 10 is characterized in that, this second magnetic core portion comprises an E font magnetic core and two ㄇ font magnetic cores.
16, transformer as claimed in claim 10 is characterized in that, this second magnetic core portion comprises four ㄇ font magnetic cores.
17, transformer as claimed in claim 10, it is characterized in that, this first time coil be coupled to one first fluorescent tube, this second time coil be coupled to one second fluorescent tube, this for the third time coil be coupled to one the 3rd fluorescent tube and the 4th coil is coupled to one the 4th fluorescent tube.
18, transformer as claimed in claim 10 is characterized in that, this transformer further comprises: first balance coil is set around on this second drum stand; Second balance coil is set around on the 3rd drum stand; The 3rd balance coil is set around on the 4th drum stand; And Siping City's weighing apparatus coil, be set around on the 5th drum stand; Wherein this first balance coil, this second balance coil, the 3rd balance coil and this Siping City weighing apparatus coil couple mutually to form a loop.
19, a kind of many fluorescent tubes back lighting device comprises: power supply; First fluorescent tube; Second fluorescent tube; And transformer; This transformer comprises: the core group is engaged with one second magnetic core portion and is constituted by one first magnetic core portion; First drum stand is arranged on the primary importance of this core group, and this primary importance is corresponding to formed one first magnetic circuit of this core group; Second drum stand is arranged on the second place of this core group, and this second place is corresponding to formed one second magnetic circuit of this core group; The 3rd drum stand is arranged on one the 3rd position of this core group, and the 3rd position is corresponding to formed one the 3rd magnetic circuit of this core group; Main coil is set around on this first drum stand, and this main coil is coupled to this power supply; For the first time coil is set around on this second drum stand, and this, coil was coupled to this first fluorescent tube first time; And coil for the second time, being set around on the 3rd drum stand, this, coil was coupled to this second fluorescent tube second time.
20, many fluorescent tubes back lighting device as claimed in claim 19 is characterized in that, this first magnetic core portion comprises an E font magnetic core.
21, many fluorescent tubes back lighting device as claimed in claim 19 is characterized in that, this first magnetic core portion comprises two ㄇ font magnetic cores.
22, many fluorescent tubes back lighting device as claimed in claim 19 is characterized in that, this second magnetic core portion comprises an E font magnetic core.
23, many fluorescent tubes back lighting device as claimed in claim 19 is characterized in that, this second magnetic core portion comprises two ㄇ font magnetic cores.
24, many fluorescent tubes back lighting device as claimed in claim 19 is characterized in that, this transformer further comprises: first balance coil is set around on this second drum stand; And second balance coil, be set around on the 3rd drum stand; Wherein this first balance coil and this second balance coil are coupled to each other to form a loop.
25, many fluorescent tubes back lighting device as claimed in claim 19 is characterized in that, this many fluorescent tubes back lighting device further comprises one the 3rd fluorescent tube and one the 4th fluorescent tube.
26, many fluorescent tubes back lighting device as claimed in claim 25 is characterized in that, this transformer further comprises: the 4th drum stand, be arranged on one the 4th position of this core group, and the 4th position is corresponding to formed one the 4th magnetic circuit of this core group; The 5th drum stand is arranged on one the 5th position of this core group, and the 5th position is corresponding to formed one the 5th magnetic circuit of this core group; Coil is set around on the 4th drum stand for the third time, this for the third time coil be coupled to the 3rd fluorescent tube; And the 4th coil, be set around on the 5th drum stand, the 4th time coil is coupled to the 4th fluorescent tube.
27, many fluorescent tubes back lighting device as claimed in claim 26 is characterized in that, this first magnetic core portion comprises two E font magnetic cores.
28, many fluorescent tubes back lighting device as claimed in claim 26 is characterized in that, this first magnetic core portion comprises an E font magnetic core and two ㄇ font magnetic cores.
29, many fluorescent tubes back lighting device as claimed in claim 26 is characterized in that, this first magnetic core portion comprises four ㄇ font magnetic cores.
30, many fluorescent tubes back lighting device as claimed in claim 26 is characterized in that, this second magnetic core portion comprises two E font magnetic cores.
31, many fluorescent tubes back lighting device as claimed in claim 26 is characterized in that, this second magnetic core portion comprises an E font magnetic core and two ㄇ font magnetic cores.
32, many fluorescent tubes back lighting device as claimed in claim 26 is characterized in that, this second magnetic core portion comprises four ㄇ font magnetic cores.
33, many fluorescent tubes back lighting device as claimed in claim 26 is characterized in that, this transformer further comprises: first balance coil is set around on this second drum stand; Second balance coil is set around on the 3rd drum stand; The 3rd balance coil is set around on the 4th drum stand; And Siping City's weighing apparatus coil, be set around on the 5th drum stand; Wherein this first balance coil, this second balance coil, the 3rd balance coil and this Siping City weighing apparatus coil couple mutually to form a loop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201315244U CN201286189Y (en) | 2008-09-11 | 2008-09-11 | Multiple strip lamp backlight apparatus and transformer thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201315244U CN201286189Y (en) | 2008-09-11 | 2008-09-11 | Multiple strip lamp backlight apparatus and transformer thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201286189Y true CN201286189Y (en) | 2009-08-05 |
Family
ID=40951154
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201315244U Expired - Fee Related CN201286189Y (en) | 2008-09-11 | 2008-09-11 | Multiple strip lamp backlight apparatus and transformer thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201286189Y (en) |
-
2008
- 2008-09-11 CN CNU2008201315244U patent/CN201286189Y/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101848571B (en) | LED driving circuit | |
| CN101634777B (en) | Ultra-high brightness LED matrix straight-downward backlight module applied to large-scale LCD | |
| CN201286189Y (en) | Multiple strip lamp backlight apparatus and transformer thereof | |
| CN1725430B (en) | Plane fluorescent lamp | |
| CN201196901Y (en) | Winding structure for transformer | |
| CN201803239U (en) | LED unilateral light backlight module and liquid crystal display device thereof | |
| CN202650797U (en) | Inverter transformer | |
| CN201369867Y (en) | Multi lamp-tube driving system | |
| CN103486502A (en) | Optical fiber network board laser light source | |
| CN201197215Y (en) | Current balancing apparatus and multi-light tube backlight module | |
| CN100492557C (en) | Transformer of converter | |
| CN201369870Y (en) | Multi lamp-tube driving circuit | |
| CN101246776A (en) | Discharging light tube driving circuit and its transformer | |
| CN201348176Y (en) | Multi strip lamp backlight device and its transformer | |
| CN201348927Y (en) | Combined type transformer and multiple lamp tubes driver circuit | |
| CN201248177Y (en) | Multi-lamp tube backlight device | |
| CN203453943U (en) | Laser light source for optical fiber mesh plate | |
| CN100585758C (en) | Power transformer combined with balance winding and its application circuit | |
| CN201063288Y (en) | Driving circuit for discharging light tube as well as transformer thereof | |
| CN201152484Y (en) | Multi-lamp type back light device | |
| CN102141216A (en) | Laser backlight source for display of liquid crystal display panel | |
| CN201174809Y (en) | Multiple lamp driving circuit | |
| TWI421839B (en) | Balancing transforming circuit for cold cathode fluorescent lamps | |
| CN207780427U (en) | A kind of liquid crystal display backlight module | |
| CN2777899Y (en) | Transformer and multi-lamp tube driving circuit using same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090805 Termination date: 20130911 |