CN102042508A - Light source apparatus - Google Patents
Light source apparatus Download PDFInfo
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- CN102042508A CN102042508A CN2009102071316A CN200910207131A CN102042508A CN 102042508 A CN102042508 A CN 102042508A CN 2009102071316 A CN2009102071316 A CN 2009102071316A CN 200910207131 A CN200910207131 A CN 200910207131A CN 102042508 A CN102042508 A CN 102042508A
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- coil
- supply apparatus
- luminescence unit
- transformer
- light supply
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Abstract
The present invention discloses a light source apparatus which utilizes the coils of a transformer to enable a single control unit to simultaneously control a plurality of groups of light emitting units so as to keep the currents in the sub-coils that are respectively coupled to the plurality of groups of light emitting units at a preset proportion. Meanwhile, output current is made more stable to enhance the usability of the light source apparatus.
Description
Technical field
The present invention by design of transformer, increases quantity of light source about a kind of light supply apparatus (ligjting device), and can make the electric current that couples the subcoil of respectively organizing luminescence unit become preset ratio.
Background technology
Please refer to Fig. 1, general light supply apparatus 100 has single dc source DC and single control module 11 usually, and under the situation of single control module 11, in order to control single group of luminescence unit 12, make luminescence unit 12 produce light source, in other words, this kind light supply apparatus can only be operated one group of luminescence unit 12, and single control module 11 also can only be controlled one group of electric current on the luminescence unit 12.
So for the demand on using, desire to operate the multi-group light-emitting device simultaneously, common practices is the quantity that increases control module accordingly, makes the number of control module identical with the group number of luminescence unit, make a control module can correspondingly control one group of luminescence unit.But thus, not only significantly increase the use of circuit area, under the situation that volume increases, also can cause the user not convenient, also can improve production cost simultaneously.
Summary of the invention
Therefore, in order to address the above problem, one of purpose of the present invention is that a kind of light supply apparatus is being provided, and can utilize single control module control multi-group light-emitting unit.
One of purpose of the present invention is a kind of light supply apparatus to be provided, can to reduce circuit area.
One of purpose of the present invention is a kind of light supply apparatus to be provided, can to save production cost.
One of purpose of the present invention is that a kind of light supply apparatus is being provided, and can make the electric current that couples the subcoil of respectively organizing luminescence unit become preset ratio.
One embodiment of the invention provide a kind of light supply apparatus, comprise a direct current power supply, at least one group of transformer, at least one group of luminescence unit, a control module and a switch.One direct current power supply is in order to produce a direct current voltage.Transformer couples dc source, and transformer comprises one first coil and one second coil.First coil is arranged at the primary side of transformer, and an end is coupled to dc source; Second coil is arranged at the secondary side of transformer.Luminescence unit includes a plurality of series connection light emitting diodes, and luminescence unit couples second coil of transformer, in order to produce light; Control module is in order to produce a control signal; Switch is coupled to the other end of the control module and first coil, according to the whether conducting or close of control signal determine switch.First coil is according to DC voltage second coil that is coupled, and producing a coupled voltages in second coil, and drives luminescence unit.
One embodiment of the invention provide a kind of light supply apparatus, comprise a direct current power supply, a plurality of transformer, a plurality of luminescence unit, a control module and a switch.Transformer couples this dc source, and transformer comprises one first coil and one second coil.First coil comprises a plurality of first subcoils, and first subcoil is connected mutually; First coil is arranged at the primary side of transformer, and first end of first coil couples dc source; Second coil comprises a plurality of second subcoils, and second coil is arranged at the secondary side of transformer.Luminescence unit includes the light emitting diode of a plurality of series connection, and luminescence unit couples second subcoil respectively; Control module is in order to produce a control signal; Switch one end ground connection, the other end couples second end of first coil, and switch is according to the state of this control signal determine switch.Wherein, the voltage that first coil receives dc source produces one first electric current, after first electric current flows through first subcoil, through flux effects second subcoil that is coupled, to produce a coupled voltages in every this second subcoil, drives the luminescence unit that second subcoil couples.
The present invention utilizes the mode of transformer, make single control module can control the multi-group light-emitting unit simultaneously, improve single control module and can only control the problem of single group of luminescence unit, and can make the electric current that couples the subcoil of respectively organizing luminescence unit become preset ratio, make output current more stable, increase the usability of light supply apparatus.
Description of drawings
Fig. 1 shows the schematic diagram of light supply apparatus one known technology of the present invention.
Fig. 2 shows the schematic diagram of light supply apparatus one embodiment of the present invention.
Drawing reference numeral
100,200 light supply apparatuses
The DC dc source
11,201 control modules
202 transformers
12,203 luminescence units
The 203a light emitting diode
204 rectification units
The 204a commutation diode
C electric capacity
The G electronegative potential
The SW switch
N1, N2 coil
N11, N12, N1N, N21, N22, N2N subcoil
The specific embodiment
At first, see also Fig. 2, Fig. 2 shows the schematic diagram of light supply apparatus one embodiment of the present invention, and light supply apparatus 200 has a direct current power supply DC, single control module 201, a transformer 202, a luminescence unit 203 and a switch SW.
Wherein, transformer 202 has coil N1 and coil N2, and coil N1 and coil N2 are arranged at the primary side and the secondary side of transformer 202 respectively, and coil N1 is in series by a plurality of subcoil N11～N1N, accordingly, coil N2 also has a plurality of subcoil N21～N2N.
First end of coil N1 couples dc source DC, and second end couples switch SW, and the end of subcoil N21～N2N of coil N2 is coupled to luminescence unit 203 respectively, and the other end then couples electronegative potential G respectively.
In present embodiment, control module 101 is by an IC (Integrated Circuit, IC) realize, and switch SW is realized by a nmos pass transistor, so the gate terminal of present embodiment switch SW couples control module 201, drain electrode end couples second end of coil N1, and source terminal couples electronegative potential G.Certainly, in another embodiment, switch SW also can be realized by the PMOS transistor.
In the present embodiment, luminescence unit 203 is that a plurality of light emitting diode 203a strings are formed, and light emitting diode 203a is one another in series to form.In one embodiment, 203 of subcoil N21～N2N and luminescence units are to couple a rectification unit 204 respectively, and rectification unit 204 comprises commutation diode 204a and capacitor C.Wherein the anode of commutation diode 204a is coupled to the end of subcoil N21～N2N, and negative electrode is coupled to light emitting diode 203a; One end of capacitor C is coupled to electronegative potential G, and the other end is coupled to the negative electrode of commutation diode 204a.
Under the switch SW conducting state, the light supply apparatus 200 inner loops that form, dc source DC produces a direct current voltage V1, coil N1 produces one first electric current after receiving DC voltage V1, because coil N1 is in series by a plurality of subcoil N11～N1N, after so first electric current flows through first subcoil N11～N1N, can produce N electric current I 11～I1N that size is identical at primary side, through the flux effects second subcoil N21～N2N that is coupled, to produce a coupled voltages V2, drive the luminescence unit 203 that second subcoil N21～N2N couples in each second subcoil N21～N2N.Wherein, N is a positive integer.
In an embodiment of the present invention, subcoil N11～N1N is all identical with the coil turn of N21～N2N, because the voltage ratio regular meeting of transformer both sides is equal to two sides' coil turn ratio, that is voltage is directly proportional with coil turn, can equate with DC voltage V1 so subcoil N21～N2N produces coupled voltages V2.Electric current I 21～I2N of subcoil N21～N2N that the secondary of then flowing through is surveyed also also can be identical with electric current I 11～I1N, and in other words, the electric current I 21～I2N of each transformer output is equal, makes electric current I 21～I2N more stable.
It is noted that, subcoil N11～the N1N of one embodiment of the invention is identical with subcoil N21～N2N number of turn, but the present invention should be as limit, the needs of visual practical operation, adjust the number of turn of each subcoil respectively, make DC voltage V1 and coupled voltages V2 form a preset ratio, similarly, also visual required and form preset ratio between electric current I 11～I1N and the I21～I2N.
Then, because of rectification unit 204, be coupled between light emitting diode 203a and the coil N2, in order to coupled voltages V2 is carried out rectification, make and form a rectified signal, and export rectified signal to light emitting diode 203a by the end of coil N2 respectively, to drive light emitting diode 203a, make light emitting diode 203a produce light source.According to an embodiment, this rectified signal is a direct current signal.
As shown in the above description, the present invention is a mode of utilizing the series connection of the first siding ring of transformer, make single control module can control the multi-group light-emitting unit simultaneously, improve single control module and can only control the problem of single group of luminescence unit, in addition, can make the electric current that couples the subcoil of respectively organizing luminescence unit become preset ratio, make output current more stable, increase the usability of light supply apparatus.
Though the present invention discloses as above with preferred embodiment; right its is not in order to qualification the present invention, any those skilled in the art, without departing from the spirit and scope of the present invention; when can doing a little change and retouching, so protection scope of the present invention is when being as the criterion with claim institute confining spectrum.
Claims (6)
1. a light supply apparatus is characterized in that, described light supply apparatus comprises:
One direct current power supply is in order to produce a direct current voltage;
At least one group of transformer couples described dc source, and described transformer comprises:
One first coil is arranged at the primary side of described transformer, and an end is coupled to described dc source; And
One second coil is arranged at the secondary side of described transformer;
At least one group of luminescence unit, described luminescence unit include a plurality of series connection light emitting diodes, and described group of luminescence unit couple second coil of described transformer, in order to produce light;
One control module is in order to produce a control signal; And
One switch is coupled to the other end of described control module and described first coil, determines the whether conducting or close of described switch according to described control signal;
Wherein, described first coil is according to described DC voltage described second coil that is coupled, and producing a coupled voltages in described second coil, and drives described luminescence unit.
2. light supply apparatus as claimed in claim 1 is characterized in that, described light supply apparatus comprises:
At least one commutation diode is coupled between an end and described luminescence unit of described second coil; And
At least one electric capacity is coupled to described commutation diode and described luminescence unit respectively;
Wherein, described commutation diode and electric capacity in order to described coupled voltages is carried out rectification, make to form a rectified signal, and export described rectified signal to drive described light emitting diode.
3. light supply apparatus as claimed in claim 2 is characterized in that, the other end ground connection of described second coil.
4. a light supply apparatus is characterized in that, described light supply apparatus comprises:
One direct current power supply;
A plurality of transformers couple described dc source, and each described transformer comprises:
One first coil comprises a plurality of first subcoils, and described these first subcoils are connected mutually; Described first coil is arranged at the primary side of described transformer, and first end of described first coil couples described dc source; And
One second coil comprises a plurality of second subcoils, and described second coil is arranged at the secondary side of described transformer;
A plurality of luminescence units, described these luminescence units include the light emitting diode of a plurality of series connection, and every described luminescence unit couples described second subcoil respectively;
One control module is in order to produce a control signal; And
One switch, one end ground connection, the other end couples second end of described first coil, and described switch determines the state of described switch according to described control signal;
Wherein, the voltage that described first coil receives described dc source produces one first electric current, after described first electric current flows through described these first subcoils, through described these second subcoils of flux effects coupling, to produce a coupled voltages, drive the described luminescence unit that described second subcoil couples in every described second subcoil.
5. light supply apparatus as claimed in claim 4 is characterized in that, described first electric current becomes preset ratio with described second electric current.
6. light supply apparatus as claimed in claim 5 is characterized in that, described light supply apparatus comprises:
At least one commutation diode; And
At least one electric capacity couples described commutation diode and described luminescence unit;
Wherein, the combination of described commutation diode and described electric capacity is in order to described coupled voltages is carried out rectification.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102071316A CN102042508A (en) | 2009-10-23 | 2009-10-23 | Light source apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102071316A CN102042508A (en) | 2009-10-23 | 2009-10-23 | Light source apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102042508A true CN102042508A (en) | 2011-05-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009102071316A Pending CN102042508A (en) | 2009-10-23 | 2009-10-23 | Light source apparatus |
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| CN (1) | CN102042508A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013181993A1 (en) * | 2012-06-04 | 2013-12-12 | 欧普照明股份有限公司 | Drive system of semiconductor light source, and semiconductor lighting device |
-
2009
- 2009-10-23 CN CN2009102071316A patent/CN102042508A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013181993A1 (en) * | 2012-06-04 | 2013-12-12 | 欧普照明股份有限公司 | Drive system of semiconductor light source, and semiconductor lighting device |
| CN103458559A (en) * | 2012-06-04 | 2013-12-18 | 欧普照明股份有限公司 | Drive system of semiconductor light source and semiconductor illumination device |
| CN103458559B (en) * | 2012-06-04 | 2015-04-15 | 欧普照明股份有限公司 | Drive system of semiconductor light source and semiconductor illumination device |
| US9967930B2 (en) | 2012-06-04 | 2018-05-08 | Opple Lighting Co., Ltd. | Drive system of semiconductor light source, and semiconductor lighting device |
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Application publication date: 20110504 |