CN203983010U

CN203983010U - Coil block and the electronic installation with this coil block

Info

Publication number: CN203983010U
Application number: CN201420068390.1U
Authority: CN
Inventors: 李英旼; 金种佑; 朴根泳
Original assignee: Samsung Electro Mechanics Co Ltd
Current assignee: Solum Co Ltd
Priority date: 2013-03-14
Filing date: 2013-08-12
Publication date: 2014-12-03
Anticipated expiration: 2023-08-12
Also published as: KR20140113249A; KR101477393B1

Abstract

The electronic installation that the utility model provides a kind of coil block and has this coil block, this coil block can minimize phase mutual interference when a plurality of coiler parts are set to single component.According to embodiment of the present utility model, coil block comprises: bobbin part, comprise two main parts that arrange abreast, and around these two main parts, be wound with coil; Core, comprises two interior legs that are inserted in main part and two outer legs that are arranged on main part outside, and interior leg and outer leg have identical area of section.

Description

Coil block and the electronic installation with this coil block

The application is to be dividing an application of August 12, application number in 2013 are 201320490679.8, denomination of invention is " coil block and the electronic installation with this coil block " utility application the applying date.

The application requires to be submitted on March 14th, 2013 the 10-2013-0027529 korean patent application of Korea S Department of Intellectual Property and the priority that is submitted to the 10-2013-0059886 korean patent application of Korea S Department of Intellectual Property on May 27th, 2013, and the open of these two applications is contained in this by reference.

Technical field

The electronic installation that the utility model relates to a kind of coil block and has this coil block, more particularly, the electronic installation that relates to a kind of like this coil block and have this coil block, even also can minimize phase mutual interference in the situation that this coil block arranging a plurality of coiler part on single component.

Background technology

In general, in display unit, printer and other electric devices and electronic installation, switched-mode power supply (SMPS) is as power supply.

SMPS is modular type power supply, this modular type power supply converts the electric power of outside supply (to be for example suitable for various electric devices and electronic installation to, computer, TV, VCR, switch, radio communication device etc.) electric power, and for utilizing the triggering of the frequency that semiconductor switch Characteristics Control is higher than commercial frequency and alleviating impact.

Recently, along with TV screen size increases, when operating, TV needs a large amount of electric energy.For this reason, SMPS(for example, DC-DC transducer) a plurality of coil blocks need to be installed in SMPS, to start the back lighting of large panel.

In the situation that nonisulated type stepping DC-DC transducer is arranged in the SMPS of prior art, conventionally use the nonisulated type stepping DC-DC transducer that a coil block is installed in single converter circuit.

Yet along with the size of panel increases, a plurality of coil blocks can be arranged in SMPS, thereby the size of SMPS can correspondingly increase.In addition,, when so a plurality of coil blocks are arranged on substrate, productivity ratio may be relatively low and may increases manufacturing cost.

[prior art file]

The special permission of (patent document 1) 10-2005-0007240 Korean Patent is announced

Utility model content

The utility model is proposed, the technical problem of phase mutual interference between a plurality of coiler parts while being set to single component to solve a plurality of coiler parts.

The electronic installation that one side of the present utility model provides a kind of coil block and has this coil block, this coil block is integral by integrated a plurality of coiler parts.

In addition, the electronic installation that a kind of coil block is provided on the other hand and has this coil block of the present utility model, even if this coil block also can minimize phase mutual interference in the situation that a plurality of coiler parts are integral to form single component.

According to one side of the present utility model, a kind of coil block is provided, this coil block comprises: bobbin part, comprise two main parts that arrange abreast, around these two main parts, be wound with coil; Core, comprises two interior legs that are inserted in main part and two outer legs that are arranged on main part outside, and interior leg and outer leg have identical area of section.

Core can have interior leg and the outer leg arranging abreast.

Core can comprise the coupling part that connects interior leg and outer leg.

The coupling part of core can have the area of section identical with the area of section of interior leg and outer leg.

Core can have the shape of similar " order ".

Core can have the gap between the end facing with each other that is formed on interior leg.

Bobbin part can be by being bonded to each other the first bobbin and the second bobbin to form, and the first bobbin and the second bobbin are of similar shape.

Each in the first bobbin and the second bobbin can comprise: main part, has tube shape; Terminal part, is formed on the two ends of main part, and main part can be arranged on the position of a side of deflection terminal part.

The first bobbin and the second bobbin can be bonded to each other, to allow main part to arrange adjacent to each other.

Core can be placed on the upper surface of terminal part and be attached to bobbin part.

The first bobbin and the second bobbin can have at least one projection and at least one insertion portion being formed on terminal part, and the first bobbin and the second bobbin are bonded to each other by described at least one projection being inserted in described at least one insertion portion.

Terminal part can be provided with a plurality of external connection terminals that are fastened to terminal part.

According on the other hand of the present utility model, a kind of coil block is provided, this coil block comprises: core, comprises two interior legs and two outer legs; The first coiler part and the second coiler part, be attached to respectively interior leg, and wherein, interior leg and outer leg have identical area of section.

According on the other hand of the present utility model, a kind of coil block is provided, this coil block comprises: the first bobbin, comprise the main part of tubulose and be formed on the two ends of main part and have the terminal part of the length larger than the diameter of main part, main part is arranged on the position of a side of deflection terminal part; The second bobbin, comprises main part and the terminal part of tubulose, and the second bobbin has the shape identical with the shape of the first bobbin; Core is attached to the first bobbin and the second bobbin simultaneously.

Part in the main part that is inserted into the first bobbin of core and the main part of the second bobbin can have identical area of section with the outside part of the main part that is exposed to the first bobbin of core and the main part of the second bobbin.

According on the other hand of the present utility model, a kind of electronic installation is provided, this electronic installation comprises: at least two light sources; At least two light source driving units, at least two light sources described in being connected respectively to, with at least two light sources described in supplying power to, wherein, light source driving units includes the coiler part of conversion input voltage, and coiler part shares single core.

Light source can comprise the LED array by a plurality of LED are connected to each other and are formed.

Light source driving units all can comprise DC/DC transducer.

According on the other hand of the present utility model, a kind of electronic installation is provided, this electronic installation comprises: a plurality of light sources; A plurality of DC/DC transducers, are connected respectively to described a plurality of light source, and to supply electric power, wherein, at least two in described a plurality of DC/DC transducers are constructed to allow coil separately to share single core.

According on the other hand of the present utility model, a kind of electronic installation is provided, this electronic installation comprises: a plurality of light sources; A plurality of DC/DC transducers, are connected respectively to described a plurality of light source, and to supply electric power, wherein, at least two in described a plurality of DC/DC transducers share single coil assembly as above, to change input voltage.

According to coil block of the present utility model, can when being set to single component, a plurality of coiler parts minimize phase mutual interference.

Accompanying drawing explanation

By the detailed description of carrying out below in conjunction with accompanying drawing, above and other of the present utility model aspect, feature and other advantages will be expressly understood more, in the accompanying drawings:

Fig. 1 is schematically illustrated according to the perspective view of the coil block of embodiment of the present utility model;

Fig. 2 is the perspective view of the coil block except coil shown in Figure 1;

Fig. 3 is the decomposition diagram of coil block shown in figure 2;

Fig. 4 is the decomposition diagram of the bobbin part of schematically illustrated Fig. 1;

Fig. 5 is the perspective view of independent bobbin that the bobbin part of Fig. 4 is shown;

Fig. 6 is the sectional view along A-A ' the line intercepting of Fig. 2;

Fig. 7 and Fig. 8 are the sectional views along B-B ' the line intercepting of Fig. 1;

Fig. 9 is according to the circuit diagram of the electronic installation of embodiment of the present utility model.

Embodiment

Hereinafter, describe with reference to the accompanying drawings embodiment of the present utility model in detail.

Yet the utility model can be implemented and should not be construed as limited to embodiment set forth herein with multiple different form.On the contrary, provide these embodiment so that the disclosure will be thoroughly and completely, and scope of the present utility model is conveyed to those skilled in the art completely.

In the accompanying drawings, for the sake of clarity, can exaggerate the shape and size of element, and same or analogous label will be used to indicate same or analogous element all the time.

Fig. 1 is schematically illustrated according to the perspective view of the coil block of embodiment of the present utility model, and Fig. 2 is the perspective view of the coil block except coil shown in Figure 1, and Fig. 3 is the decomposition diagram of coil block shown in figure 2.

Fig. 4 is the decomposition diagram of the bobbin part of schematically illustrated Fig. 1, and Fig. 5 is the perspective view of independent bobbin that the bobbin part of Fig. 4 is shown.

Referring to figs. 1 through Fig. 5, according to the coil block 100 of embodiment of the present utility model, can comprise bobbin part 20, coil 70 and core 40.

As shown in Figure 4, bobbin part 20 can consist of a plurality of bobbin 20a and 20b.

In addition, as shown in Figure 4 and Figure 5, each bobbin 20a and 20b can comprise: tubular body portion 22, is formed with through hole 21 in the central authorities of tubular body portion 22; Flange portion 23, extends from the two ends of main part 22 vertically along the external diameter direction of main part 22; Terminal part 25, extends from flange portion 23.

Be formed on through hole in main part 22 21 as a part for core 40 insert the path of process.In embodiment of the present utility model, illustrated that by way of example the cross section of through hole 21 has quadrangle form.Through hole 21 is constructed to the shape that coupling is inserted into the core 40 in through hole 21, and the utility model is not limited to this.That is, through hole 21 can have various shapes, with the shape corresponding to being inserted into the core 40 in through hole 21.

Flange portion 23 can be respectively formed at the two ends of main part 22.In addition, the outer surface and the space between two flange portions 23 that are formed on main part 22 are used as winding part 28, and coil 70 is wound around around being wound around part 28.Therefore, flange portion 23 can be used for protection and is not subject to external action around the coil 70 that is wound around part 28 windings, and makes coil 70 and exterior insulation, simultaneously support coils 70.

In addition, according to the coil block 100 of embodiment of the present utility model, comprise projection 27, projection 27 is formed on the outer surface of any one flange portion in flange portion 23.Projection 27 can have the outside outstanding shape for lugs of outer surface from flange portion 23, can be formed in the part that is formed on through hole 21 tops of flange portion 23, to be easily identified by naked eyes.

According to the projection 27 of embodiment of the present utility model, be set to allow the winding direction of coil when around bobbin 20 automatic (or manually) winding around 70 to be easily identified.

Terminal part 25 can be formed respectively from the two ends (that is, flange portion 23) of the main part 22 of bobbin 20 and stretch out, and can be provided with the one or more external connection terminals 60 that are fastened to terminal part 25.

With reference to Fig. 4 and Fig. 5, according to the terminal part 25 of embodiment of the present utility model, can extend from a part for the inner surface of main part 22, and can be formed with respect to flange portion 23 be roughly vertical.

In addition, terminal part 25 can not arrange in symmetrical mode based on main part 22, but any side of terminal part 25 can extend based on main part 22.That is, according in the bobbin 20a of embodiment of the present utility model and 20b, main part 22 is not arranged on the central authorities of terminal part 25, and is arranged on the position of any side of deflection terminal part 25.

The end of terminal part 25 can be provided with in conjunction with projection 25a and insertion portion 25b.In conjunction with projection 25a and insertion portion 25b, be set in conjunction with two bobbin 20a and 20b, to form.Therefore,, when in conjunction with two bobbin 20a and 20b, in conjunction with projection 25a, can be inserted in insertion portion 25b.

For this reason, according in the coil block 100 of embodiment of the present utility model, corresponding one end of terminal part 25 can be provided with in conjunction with projection 25a and insertion portion 25b.In addition, as shown in Figure 4, the two ends of terminal part 25 can be provided with in conjunction with projection 25a and insertion portion 25b.In this case, bobbin 20a and 20b can be bonded to each other along various directions.

External connection terminals 60 can be so that from terminal part, 25 outside outstanding modes are fastened to terminal part 25.

In embodiment of the present utility model, illustrated by way of example external connection terminals 60 can be from terminal part 25 lower surface outstanding downwards.

Yet the utility model is not limited to this.That is, external connection terminals 60 can be fastened to the sidepiece of terminal part 25, with from terminal part 25 sidepiece flatly outstanding, and a part for external connection terminals 60 is flexible.

In addition, as shown in Figure 3 and Figure 5, according to the terminal part 25 of embodiment of the present utility model, comprise four external connection terminals 60.Yet the utility model is not limited to this, the quantity of external connection terminals 60 can change, with the quantity corresponding to coil 70.

According to the bobbin part 20 of embodiment of the present utility model, can form by two bobbin 20a and 20b are bonded to each other.Specifically, according to the first bobbin 20a of embodiment of the present utility model and the second bobbin 20b, can be of similar shape.

The first bobbin 20a and the second bobbin 20b can be in conjunction with, allow main part 22 to arrange abreast simultaneously.With reference to Fig. 4, according to the first bobbin 20a of embodiment of the present utility model and the second bobbin 20b combination, main part 22 is arranged adjacent to each other.In addition, the first bobbin 20a and the second bobbin 20b combination by this way, that is, the combination projection 25a of the first bobbin 20a or the second bobbin 20b is inserted in the corresponding insertion portion 25b of the second bobbin 20b or the first bobbin 20a.

As mentioned above, when the first bobbin 20a and the second bobbin 20b in conjunction with time, each main part 22 is arranged on the middle body of coil block 100, the outer setting space by outstanding terminal part 25 in main part 22.

In addition, described space is set to by below that outer leg 42a and the 42b of the core 40 of describing is shared.Therefore, from the upper area of the outstanding terminal part 25 of main part 22 with act on hold core 40 the space of leg 42a and 42b, terminal part 25 from the outstanding distance of main part 22 can corresponding to the length (or thickness) of leg 42a and 42b.

Bobbin part 20 can be manufactured by injection moulding, but is not limited to this.That is, bobbin part 20 also can be passed through the whole bag of tricks (for example, punch process etc.) and manufactures.In addition, according to the bobbin 20a of embodiment of the present utility model and 20b, can be formed by dielectric resin material, and can be formed by the material with high thermal endurance and high resistance to pressure.

Polyphenylene sulfide (PPS), liquid crystal polyester (LCP), polybutylene terephthalate (PBT) (PBT), PETG (PET), phenolic resins etc. can be used as being used to form the material of bobbin part 20.

Coil 70 can be wound around around the winding part 28 being formed on bobbin 20a and 20b.

Coil 70 can be sub-thread twisted wire or the Ritz line (Ritz wire) that forms by twisting stranded wire.Lead-in wire (end of coil 70) can be physically and electric the 25 outstanding external connection terminals 60 that are connected to from terminal part.

Meanwhile, according in the coil block 100 of embodiment of the present utility model, each coil 70 can be along different direction (that is, contrary direction) around two bobbin 20a and 20b be wound around.For example, when a coil is wound around along clockwise direction around any one bobbin, another coil can be along being counterclockwise wound around around another bobbin.Yet the utility model is not limited to this, therefore, as required, coil can be wound around in every way, for example, and along contrary direction winding around, along identical direction winding around etc.

In addition,, according to embodiment of the present utility model, around the first bobbin 20a and the second bobbin 20b, be wound with coil 70 respectively.Coil 70 can by with below by core 40 electromagnetic coupled of describing and operation independently of one another.That is, the first bobbin 20a and the core 40 that are wound with coil 70 are operable as the first coiler part, and the second bobbin 20b and the core 40 that are wound with coil 70 are operable as the second coiler part that is independent of the first coiler part.

Core 40 can partly be inserted in the through hole 21 being formed in bobbin 20a and 20b, to form the magnetic circuit that is electromagnetically coupled to coil 70.

According to the core 40 of embodiment of the present utility model, can be set to a pair of.Therefore, this pair of core can partly be inserted in the through hole 21 of bobbin, to be bonded to each other.

Core 40 can be the ferrite core that comprises a plurality of leg 41a, 41b, 42a and 42b, and can be used as according to electric current the path in the mobile magnetic field producing in coil 70.

A pair of core 40a and 40b can be of similar shape, and can be set to relative to each other symmetrical.In this case, can conveniently manufacture and assemble this pair of core 40a and 40b.

In addition, this pair of core 40a and 40b all can be constructed to comprise interior leg 41a and the 41b being inserted in bobbin 20a and 20b and outside outer leg 42a and the 42b that are arranged on bobbin part 20.In addition, interior leg 41a is connected by coupling part 43 with 42b with outer leg 42a with 41b.

Interior leg 41a and 41b are inserted in the through hole 21 of main part 22.Therefore, the cross section of interior leg 41a and 41b has the shape corresponding with the shape in the cross section of through hole 21, and interior leg 41a and 41b can be formed and have the area of section less than the area of section of through hole 21, to facilitate interior leg 41a and 41b to be inserted in through hole 21.

In embodiment of the present utility model, through hole 21 has quadrangular section.Therefore, the cross sectional shape of interior leg 41a and 41b can be similar to quadrangle form.

The interior leg 41a of core 40a and the interior leg 41a of core 40b can be set to face with each other in the substantial middle position of through hole 21, the interior leg 41b of core 40a and the interior leg 41b of core 40b can be set to face with each other in the substantial middle position of through hole 21, and as shown in Figure 7, gap 45 can be formed between the interior leg 41a of core 40a and the end facing with each other of the interior leg 41a of core 40b and between the interior leg 41b of core 40a and the end facing with each other of the interior leg 41b of core 40b.

Outer leg 42a and 42b can arrange abreast in outside and the main part 22 of bobbin part 20.In addition, according to the outer leg 42a of embodiment of the present utility model and 42b, can be formed and there is the cross section that equates with the cross section of interior leg 41a and 41b or the cross section wider than the cross section of interior leg 41a and 41b.

More particularly, outer leg 42a and 42b can be formed the main part 22 around bobbin 20a and 20b.

Coupling part 43 is connected between interior leg 41a and 41b and outer leg 42a and 42b.Similar with outer leg 42a and 42b, the cross section of coupling part 43 can equate with the cross section of interior leg 41a and 41b or be wider than the cross section of interior leg 41a and 41b.

In addition, the lower surface of coupling part 43 can be placed on the upper surface of terminal part, thereby is supported by terminal part.

Core 40 can be formed by Mn-Zn based ferrite, compares with other materials, and Mn-Zn based ferrite has higher magnetic permeability, lower loss, higher saturation flux density, higher stability and lower production cost.Yet the material of core 40 is not limited particularly.

Meanwhile, in embodiment of the present utility model, illustrated that by way of example core 40 has the shape of similar " order ", and interior leg 41a and 41b and outer leg 42a and 42b arrange abreast.Therefore, two the bobbin 20a and the 20b that are attached to core 40 can arrange abreast, and main part 22 arranges abreast simultaneously.

According in the coil block 100 of the structure as mentioned above of embodiment of the present utility model, two coiler parts (L1 of Fig. 7 and the L2 of Fig. 8) form single coil assembly.Yet the in the situation that of structural line coil assembly as mentioned above, these two coiler parts share single core.

In this case, the magnetic flux producing in core 40 due to each coiler part can not disturb each other.

Therefore,, in order to be minimized in the interference of the magnetic flux producing in core 40, according to the coil block of embodiment of the present utility model, be constructed to make all parts in interior leg 41a and 41b, outer leg 42a and 42b and coupling part 43 to there is identical area of section.

Fig. 6 is the sectional view along A-A ' the line intercepting of Fig. 2, and Fig. 7 and Fig. 8 are the sectional views along B-B ' the line intercepting of Fig. 1.

First, as shown in Figure 6, the area of section A2 that is inserted into bobbin 20a and part in 20b of core and A3 need to be identical with area of section A1 and the A4 of the part that is arranged on bobbin 20a and 20b outside of core, with the magnetic flux density in holding core consistently.For this reason, according to the core 40 of embodiment of the present utility model, can be constructed to make all parts in interior leg 41a and 41b, outer leg 42a and 42b and coupling part 43 to there is identical area of section.In addition, gap can be formed between the end of interior leg 41a and be formed between the end of interior leg 41b.

In general, the magnetic flux in core 40 along magnetic flux the most easily flow the path of process form.In the situation that forming magnetic flux by the first coiler part L1, as shown in Figure 7, can be along A direction, B direction and C direction pathway.Yet, the in the situation that of the B of path, because causing magnetic flux, the gap 45 between interior leg may be difficult to flow, and the in the situation that of the C of path, the whole length in path increases.Therefore all magnetic fluxs that, form by the first coiler part L1 can flow along path A.

Similarly, in the situation that forming magnetic flux by the second coiler part L2, as shown in Figure 8, can be along D direction, E direction and F direction pathway.Yet, the in the situation that of the E of path, because causing magnetic flux, the gap 45 between interior leg may be difficult to flow, and the in the situation that of the F of path, the whole length in path increases.Therefore all magnetic fluxs that, form by the second coiler part L2 in the second bobbin 20b can flow along path D.

Here, as mentioned above, according to the core 40 of embodiment of the present utility model, can be constructed to make all parts in interior leg 41a and 41b, outer leg 42a and 42b and coupling part 43 to there is identical area of section.Therefore, even in the situation that magnetic flux is formed on path A and D simultaneously, independent in path ground forms and can phase mutual interference, and each path that magnetic flux forms institute edge has identical area of section, thereby can keep magnetic flux and can not reduce magnetic flux density.

As mentioned above, according in the coil block of embodiment of the present utility model, the magnetic flux forming by the first coiler part L1 can be formed in path A, and it is upper that the magnetic flux forming by the second coiler part L2 can be formed on path D, can prevent thus the phase mutual interference of two magnetic fluxs of in-core.

Therefore,, according in the coil block of embodiment of the present utility model, at identical in-core, by the magnetic flux of the first coiler part formation and by the coupling factor K between the magnetic flux of the second coiler part formation, can be approximately ' 0 '.

Thereby at in-core in the situation that produce to disturb increasing coupling factor between two magnetic fluxs, because the change of the load of coiler part causes the duty ratio generation time of two coiler parts poor, one of them coil saturable continues the so long time of this time difference, thereby can reduce the efficiency of coiler part.

Yet according in the coil block of embodiment of the present utility model, even in the situation that two coiler parts are used single core, coupling factor is approximately ' 0 ', thereby can not produce interference in the magnetic flux forming by two coiler parts.

Therefore,, even in the situation that two coiler parts consist of single component, according to the coil block of embodiment of the present utility model, also can realize the identical efficiency of efficiency of the coil block of installing independently with independent element with two coiler part.

According to the embodiment of the present utility model constructing as mentioned above, two coiler parts are constructed to single coil assembly, and only use single core.Therefore, compare with the coil block of independent element structure with two coiler part of prior art, by the shared space (or area) of coil block being arranged on substrate, can be reduced.

In addition, according to embodiment of the present utility model, even in the situation that two coiler parts are integral as single component, the coupling factor of in-core is also approximately ' 0 ', therefore, compare with the situation of independent element structure with two coiler parts, coil block can be realized identical efficiency.

In addition, according in the coil block of embodiment of the present utility model, two bobbins that are attached to core are of similar shape.Therefore, the bobbin of a type can be manufactured to a plurality of, and then, two in a plurality of bobbins of manufacture are bonded to each other, thereby can manufacture the coil block according to embodiment of the present utility model.Therefore, manufacture process can be facilitated and manufacturing cost can be reduced.

By using display unit, the electronic installation in embodiment of the present utility model is described.Yet electronic installation is not limited to this, but can comprises various lighting devices and pass through all devices of light source luminescent.

According to the display unit 1 of embodiment of the present utility model, can comprise: light source cell S, is fed to liquid crystal panel by light; Light source driving units, supplies power to light source cell S.

Light source cell S can comprise the light-emitting diode (LED) that uses DC power drives.Light source cell S can consist of a plurality of light source S1 and S2, and each in light source S1 and S2 can consist of single led or a plurality of LED.

In addition, each in light source S1 and S2 can have the LED array being arranged on substrate.Here, LED array is driven by the driving electric power from light source driving units supply, and has predetermined level or more the DC electricity of the voltage of high level and utilizing emitted light by use.

Light source driving units supplies power to light source cell S.For this reason, light source driving units can comprise DC/DC transducer CV1 and CV2, and DC/DC transducer CV1 and CV2 convert input electric power to the DC electricity that is suitable for driving light source cell S.

DC/DC transducer CV1 and CV2 can be set to the quantity corresponding to light source S1 and S2.In embodiment of the present utility model, light source cell S comprises two LED array S1 and S2.Therefore, two DC/DC transducer CV1 and CV2 can be set, therefore, these two DC/DC transducer CV1 and CV2 are connected respectively to LED array S1 and S2.

Meanwhile, there are differences aspect the structure at coiler part L1 and L2, these two DC/DC transducer CV1 and CV2 have identical structure.Therefore, will only with reference to single DC/DC transducer CV1, identical structure be described.

DC/DC transducer CV1 is connected to rectification unit (not shown) or power factor correction unit (not shown) to receive electric power Vin, and can comprise coiler part L1(, transformer).In addition, DC/DC transducer CV1 can comprise switch element M1 and for the output rectification unit of rectification.

Switch element M1 is according to the switching signal of transmitting from control unit CU1 and switch, to control flowing from the electric current of coiler part L1.Here, switch element M1 can be transistor.

Output rectification unit can will become DC voltage from the AC voltage commutation of coiler part L1 output, and this DC voltage will be supplied to light source S1(, LED array).For this reason, output rectification unit can comprise rectifier diode D1 and smmothing capacitor C1.The anode of rectifier diode D1 can be connected to one end of the secondary winding of coiler part L1.In addition, one end of smmothing capacitor C1 can be connected to the negative electrode of rectifier diode D1, and the other end of smmothing capacitor C1 can ground connection.

In addition, according in the light source driving units of embodiment of the present utility model, two the DC/DC transducer CV1 and the CV2 that supply power to two light source S1 and S2 can share single core 40.That is,, in being connected respectively to two the DC/DC transducer CV1 and CV2 of two light source S1 and S2, each coiler part L1 and L2 can be constructed to single coil assembly 100, coil 70(Fig. 1 of coiler part L1 and L2) can share single core 40.

Can be by using aforesaid coil block 100(Fig. 1) realize such structure.As mentioned above, according to the coil block 100 of embodiment of the present utility model, be constructed to by making two coiler part L1(Fig. 7) and L2(Fig. 8) form single component and only use single core 40.In addition, the coil 70 of each coiler part L1 and L2 shares single core 40.

In the situation that use according to the coil block 100 of embodiment of the present utility model, every two DC/DC transducer CV1 and CV2 can be used single coil assembly 100.

In the prior art, the coiler part of DC/DC transducer consists of independently coil block independently.Therefore, when structure is during two DC/DC transducers, need two coil blocks, and the coil of coiler part use separately, core independently.

Yet, according to embodiment of the present utility model, when being directed to two DC/DC transducer CV1 and CV2 and using single coil assembly 100 and each coil 70 to be constructed to share single core 40, by the shared space (or area) of coil block 100 being arranged on substrate, can be reduced.In addition,, in manufacture process, when being directed to two DC/DC transducer CV1 and CV2 and only having single coil assembly 100 to be arranged on substrate, also can reduce manufacturing time.

Meanwhile, Fig. 9 shows and single coil assembly is set with the situation corresponding to two light source S1 and S2, but is not limited to this according to the electronic installation of embodiment of the present utility model.That is, in the situation that comprising four light sources, two coil blocks can be used, in the situation that comprising eight light sources, four coil blocks can be used.

According to the coil block of the utility model design, be not limited to above-described embodiment, but can carry out various modification.For example, in the aforementioned embodiment, two bobbins flatly arrange with respect to the mounting surface of substrate, but the utility model is not limited to this.That is, bobbin can arrange in every way, for example, with respect to the mounting surface of substrate, arranges vertically, arranges etc. with specific angle.

In addition, in previous embodiment of the present utility model, described coil block and be applied to light source driving units, but the utility model is not limited to this.According to the coil block of embodiment of the present utility model, can be applicable to various electronic devices and electronic installation.

As mentioned above, according in the coil block of embodiment of the present utility model, two coiler parts are constructed to single component, and only use single core.Therefore, compared by the prior art of independent component structure with two coiler part, by the shared space (or area) of coil block being arranged on substrate, can be reduced.

In addition, according to embodiment of the present utility model, even in the situation that two coiler parts are integral as single component, the coupling factor of in-core is also approximately ' 0 ', therefore, coil block can be realized with two coiler part by the identical efficiency of the efficiency of the coil block of independent component structure.

In addition, according in the coil block of embodiment of the present utility model, two bobbins that are attached to core are of similar shape.Therefore, can a plurality ofly then make two in a plurality of bobbins to be bonded to each other to manufacture coil block by the bobbin of a type is prepared as.Therefore, the manufacture process of coil block can be facilitated and manufacturing cost can be reduced.

Although illustrated and described the utility model in conjunction with the embodiments, those skilled in the art, by clear, in the situation that do not depart from the spirit and scope of the present utility model that are defined by the claims, can modify and change.

Claims

1. a coil block, is characterized in that, described coil block comprises:

The first bobbin, comprises the main part of tubulose and is formed on the two ends of main part and has the terminal part of the length larger than the diameter of main part, main part is arranged on the position of a side of deflection terminal part;

The second bobbin, comprises main part and the terminal part of tubulose, and the second bobbin has the shape identical with the shape of the first bobbin;

Single core is attached to the first bobbin and the second bobbin simultaneously,

Wherein, be wound with coil respectively around the first bobbin and the second bobbin, coil shares single core.

2. coil block according to claim 1, is characterized in that, the first bobbin and the second bobbin are bonded to each other, to allow main part to arrange adjacent to each other.

3. coil block according to claim 1, it is characterized in that, the part in the main part that is inserted into the first bobbin of core and the main part of the second bobbin has identical area of section with the outside part of the main part that is exposed to the first bobbin of core and the main part of the second bobbin.

4. an electronic installation, is characterized in that, described electronic installation comprises:

At least two light sources;

At least two light source driving units, at least two light sources described in being connected respectively to, with at least two light sources described in supplying power to,

Wherein, light source driving units includes the coiler part of conversion input voltage,

Coiler part shares single core.

5. electronic installation according to claim 4, is characterized in that, light source comprises the LED array by a plurality of LED are connected to each other and are formed.

6. electronic installation according to claim 4, is characterized in that, light source driving units includes DC/DC transducer.

7. an electronic installation, is characterized in that, described electronic installation comprises:

A plurality of light sources;

A plurality of DC/DC transducers, are connected respectively to described a plurality of light source, to supply electric power,

Wherein, at least two in described a plurality of DC/DC transducer are constructed to allow coil separately to share single core.