CN202353873U - Light source supply module - Google Patents
Light source supply module Download PDFInfo
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- CN202353873U CN202353873U CN2011204513520U CN201120451352U CN202353873U CN 202353873 U CN202353873 U CN 202353873U CN 2011204513520 U CN2011204513520 U CN 2011204513520U CN 201120451352 U CN201120451352 U CN 201120451352U CN 202353873 U CN202353873 U CN 202353873U
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Abstract
The utility model provides a light source supply module which comprises at least one light emitting diode and a switch power supply circuit; the switch power supply device comprises an input port, an output port, a power supply conversion circuit and a switch circuit, wherein the input end is electrically connected with a power supply; the output port is electrically connected with the light emitting diode; the power supply conversion circuit is electrically connected with the input port and the output port so as to receive the power supply and convert the power supply into the electric energy with predetermined voltage or current to output; and the switch circuit is formed by a way of a ringing choke converter (RCC) circuit and is electrically connected with the power supply conversion circuit, so as to conduct or block the electric energy output by the power supply conversion circuit, and limit the power supply conversion circuit to output the current of the light emitting diode to a predetermined current value.
Description
Technical field
The utility model is relevant with Optical devices designs, more detailed is meant a kind of light source supply module.
Background technology
Progress along with optics science and technology; Light-emitting diode (Light-emitting diode; LED) technology is day by day ripe with application; But and light-emitting diode has advantages such as volume is little, reaction is fast, the life-span long, be difficult for decay, firm in appearance, vibration resistance full-color light-emitting (containing invisible light), loss is low, thermal radiation is little, volume production is easy, be with, the light source of more and more light source supply modules changes the employing light-emitting diode and replaces traditional fluorescent tube or bulb.
And the bigger difference of the start of light-emitting diode and other electron component be its mainly be according to the electric current that passes through how much decide the start degree, but not voltage what supply to give.Be with, utilize the light source supply module of light-emitting diode as stabilized light source supply, can design the switching power unit of deciding electric current usually and supply stable electric current and light-emitting diode.
Yet; Progress along with electronics technology; The switching power unit of light source supply module normally utilizes the design of electronic chip to reach the effect of deciding electric current, but electronic chip not only cost is comparatively expensive, and must extra power supply just can reach the effect of its internal circuit design; Not only can cause expending of additional electrical energy, and reaction speed is also comparatively slow.In addition, if when the user desires to set up dimmer light-emitting diode is carried out light modulation, make dimmer and switching power unit produce easily and chase phenomenon, and can cause light-emitting diode that the situation generation of flicker is arranged.Be do not attain yet with the design of, conventional lighting sources supply module perfect, and the part that still haves much room for improvement.
The utility model content
In view of this, the main purpose of the utility model is to provide a kind of light source supply module, and not only cost is low and reaction speed is fast.
Edge is to reach above-mentioned purpose; The utility model provides a light source supply module; It includes an at least one light-emitting diode and a switching power unit, and wherein, this switching power unit comprises an input port, an output port, a power-switching circuit, a switching circuit; Wherein, this input port is in order to electrically connect with a power supply; This output port is in order to electrically connect with this light-emitting diode; This power-switching circuit and this input port and this output port electrically connect, and in order to receiving this power supply, and export after converting the electric energy of a predetermined voltage or electric current to; This switching circuit is with concussion coil converter (Ringing Choke Converter; RCC) mode of circuit constitutes; And electrically connect with this power-switching circuit; In order to conducting or block the electric energy of this power-switching circuit output, and limit electric current that this power-switching circuit output gives this light-emitting diode in a predetermined current value.
According to above-mentioned design; The utility model also provides another light source supply module; It includes an at least one light-emitting diode and a switching power unit, and wherein, this switching power unit comprises an input port, an output port, a power-switching circuit, a switching circuit; Wherein, this input port is in order to electrically connect with a power supply; This output port is in order to electrically connect with this light-emitting diode; This power-switching circuit and this input port and this output port electrically connect, and in order to receiving this power supply, and export after converting the electric energy of a predetermined voltage or electric current to; This switching circuit is that the mode with auto-excitation type (Self-oscillating) circuit is constituted; And electrically connect with this power-switching circuit; In order to conducting or block the electric energy of this power-switching circuit output, and limit electric current that this power-switching circuit output gives this light-emitting diode in a predetermined current value.
According to above-mentioned design; This switching power unit also comprises a voltage compensating circuit, electrically connects with this switching circuit, in order to control this switching circuit; When the voltage of this power supply supply is changed, still can limit electric current that this power-switching circuit output gives this light-emitting diode in this predetermined current value.
According to above-mentioned design, this voltage compensating circuit is in series by a diode and electric capacity and resistance parallel circuits.
According to above-mentioned design; This switching power unit also comprises a temperature-compensation circuit, electrically connects with this voltage compensating circuit, in order to control this switching circuit; When the voltage of this power supply supply is changed, still can limit electric current that this power-switching circuit output gives this light-emitting diode in this predetermined current value.
According to above-mentioned design; This switching power unit also comprises a temperature-compensation circuit; Electrically connect with this switching circuit; In order to control this switching circuit, when the working temperature of this switching power unit is changed, still can limit electric current that this power-switching circuit output gives this light-emitting diode in this predetermined current value.
According to above-mentioned design, this temperature-compensation circuit is to be made up of thermistor.
According to above-mentioned design, this power-switching circuit includes a DC-DC converter (DC/DC Converter), gives this load in order to output behind the electric energy that the electric energy that receives is converted to a predetermined voltage or electric current.
According to above-mentioned design, this power-switching circuit also includes a rectification circuit, electrically connects with this input port, and in order to receiving the electric energy of this power supply, and this DC-DC converter is given in output after converting thereof into direct current.
According to above-mentioned design, this power-switching circuit also comprises a dimmer, is between this power supply and this switching power unit, and the electric energy of this power supply supplies to give this switching power unit through this dimmer adjustment back output.
According to above-mentioned design, this switching circuit includes two transistors that are of coupled connections, and this switching circuit is through making the mutual conducting of this two-transistor, and limits electric current that this power-switching circuit output gives this load in this predetermined current value.
According to above-mentioned design; This switching circuit includes a transistor AND gate one mos field effect transistor that is coupled and connects; This switching circuit is through making the mutual conducting of this mos field effect transistor of this transistor AND gate, and limits electric current that this power-switching circuit output gives this load in this predetermined current value.
The utility model top beneficial effect is: just can utilize electronic chip can reach the purpose of deciding electric current through above-mentioned design, and not only cost is low to make this switching power unit, also the fast effect of reaction speed.
Description of drawings
For being illustrated more clearly in the utility model, enumerate below that preferred embodiment and conjunction with figs. specify as after, wherein:
Fig. 1 is the calcspar of the utility model first embodiment.
Fig. 2 is the feasible detailed circuit diagram of the utility model first embodiment.
Fig. 3 is the calcspar of the utility model second embodiment.
Fig. 4 is the feasible detailed circuit diagram of the utility model second embodiment.
Fig. 5 is the feasible calcspar of the utility model the 3rd embodiment.
Fig. 6 is the feasible detailed circuit diagram of the utility model the 3rd embodiment.
Fig. 7 is the feasible calcspar of the utility model the 4th embodiment.
Fig. 8 is the feasible detailed circuit diagram of the utility model the 4th embodiment.
Fig. 9 more can set up dimmer for disclosing the utility model.
The design that Figure 10-Figure 13 discloses the utility model also is applicable to non-isolated transformer.
Embodiment
See also Fig. 1; The utility model provides a kind of light source supply module of preferred embodiment; It includes a switching power unit 1 and a plurality of light-emitting diode 2; This switching power unit 1 supplies to give said light-emitting diode 2 in order to the electric energy that receives and change a power supply 100, and in present embodiment, this power supply 100 is the AC power that Utilities Electric Co. supplied; But, also can use DC power supply or the AC power that electrification energy storage system (like wind power generation, solar power generation, geothermal power generation etc.) produces instead according to demand being set or environment being set not as limit.This switching power unit 1 comprises an input port 10, an output port 20, a power-switching circuit 30, a switching circuit 40, wherein:
This input port 10 is in order to electrically connect with this power supply 100.
This output port 20 is in order to electrically connect with said light-emitting diode 2.
This power-switching circuit 30 electrically connects with this input port 10 and this output port 20; And include a rectification circuit 301 and a DC-DC converter (DC/DC Converter) 302; This rectification circuit 301 electrically connects with this input port 10; In order to receiving the electric energy of this power supply 100, and export after converting thereof into direct current.This DC-DC converter 302 electrically connects with this rectification circuit 301 and this output port 20, and in order to receiving the direct current of these rectification circuit 301 outputs, and this light-emitting diode 2 is given in output after the electric energy that receives being converted to the electric energy of a predetermined voltage or electric current.
This switching circuit 40 be with concussion coil converter (Ringing Choke Converter, the mode of auto-excitation type RCC) (Self-oscillating) circuit constitutes, but not as limit, also but other feasible auto-excitation type circuit.This switching circuit and this power-switching circuit 30 electrically connect; In order to conducting or block the electric energy of this power-switching circuit 30 outputs; And limit electric current that 30 outputs of this power-switching circuit give this light-emitting diode 2, and then reach and decide the purpose that said light-emitting diode 2 is given in the electric current supply in a predetermined current value.
Seeing also Fig. 2, is that the structure with the utility model first preferred embodiment is under the foundation structure, wherein a kind of feasible detailed circuit structure.In the present embodiment, this DC-DC converter 302 is an isolated transformer, but not as limit.When power supply 100 begins power supply when giving this power-switching circuit 30; Transistor Q1 conducting in this switching circuit 40, and make these DC-DC converter 302 starts and supply electric energy and give said light-emitting diode 2, the continuous annex map A that consults; This will make the collection level electric current of transistor Q1 rise (like waveform 1); And transistor Q2 base voltage rises (like waveform 2), when the base voltage of transistor Q2 rises to predetermined value, will make transistor Q2 conducting and another transistor Q1 is turn-offed; And this DC-DC converter 302 begins to release energy, and the voltage waveforms of the ancillary coil N2 of this DC-DC converter 302 is negative pressure (like a waveform 3); After transistor Q1 turn-offed a period of time, these DC-DC converter 302 energy discharged and finish, and made the voltage waveforms of ancillary coil N2 of this DC-DC converter 302 become malleation, and made transistor Q1 conducting, and turn-off transistor Q2; And then carry out the circulation of transistor Q1, the mutual conducting of Q2 according to above-mentioned principle, limit these power-switching circuit 302 outputs and give the effect of the electric current of this light-emitting diode 2 and reach in this predetermined current value.
In addition; When the input power supply was unstable, then the electric current of the said light-emitting diode of influence output produced the situation of floating easily, took place for avoiding said circumstances; See also Fig. 3; Include an input port 11, an output port 21, a power-switching circuit 31 and a switching circuit 41 of same structure equally for the utility model uses the light source supply module of the second preferred embodiment switching power unit 3, this switching power unit 3, repeat no more in this appearance.And be that with the foregoing description difference this switching power unit 3 also includes a voltage compensating circuit 51; Electrically connect with this switching circuit 41; In order to control this switching circuit 41; Float when the voltage of this power supply 100 supplies produces, and when making the direct current of rectification circuit 311 supplies change, still can limit electric current that these power-switching circuit 312 outputs give said light-emitting diode 4 in this predetermined current value.
Continuous consulting Fig. 4, is that the structure with the utility model second preferred embodiment is under the foundation structure, wherein a kind of feasible detailed circuit structure.In the present embodiment, this voltage compensating circuit 51 is in series by a diode D1 and capacitor C 1 and resistance R 1, R2 parallel circuits, but not as limit.When the voltage generation of these power supply 100 supplies is floated; And when making the direct current of this rectification circuit 311 supplies rise; With making the voltage of capacitor C 1 rise, cause the ground level rate of voltage rise of transistor Q4 to increase, and then quicken transistor Q4 conducting and shorten time of transistor Q3 conducting; And when making voltage rise, still can reach the effect of stablizing output current.
Moreover; When the light source supply module provides light source after a period of time, its working temperature can rise gradually, and has influence on the start of internal structure easily; The electric current that then can make output give said light-emitting diode produces the situation that promotes gradually; For avoiding said circumstances to take place, see also Fig. 5, use the light source supply module of the 3rd preferred embodiment switching power unit 5 for the utility model; This switching power unit 7 includes and an input port 12 of the first embodiment same structure, an output port 22, a power-switching circuit 32 and a switching circuit 42 equally, repeats no more in this appearance.And be that with the foregoing description difference this switching power unit 5 also includes a temperature-compensation circuit 52; Electrically connect with this switching circuit 42; In order to control this switching circuit 42; When the working temperature of this switching power unit 5 is changed, still can limit electric current that these power-switching circuit 32 outputs give this light-emitting diode 6 in this predetermined current value.
Continuous consulting Fig. 6, is that the structure with the utility model second preferred embodiment is under the foundation structure, wherein a kind of feasible detailed circuit structure.In the present embodiment, this temperature-compensation circuit 62 is in series by a resistance R 3 and a thermistor RH1, but not as limit.When the working temperature of this switching power unit 5 rises; With making the resistance of this thermistor RH1 increase, cause the ground level rate of voltage rise of transistor Q6 to increase, and then shorten the time of transistor Q5 conducting; And when making working temperature rise, still can reach the effect of stablizing output current.
Again; For reaching the better electric current supply of deciding effect; See also Fig. 7; Include equally and an input port 13 of the first embodiment same structure, an output port 23, a power-switching circuit 33 and a switching circuit 43 for the utility model uses the light source supply module of the 4th preferred embodiment switching power unit 7, this switching power unit 7, repeat no more in this appearance.And with the foregoing description difference be this switching power unit 7 also include the voltage compensating circuit 53 that electrically connects with this switching circuit 43 and one with the temperature-compensation circuit 54 of these voltage compensating circuit 53 electric connections; Reaching the effect of voltage and temperature dual compensation, can be more stable and make that the electric current of light-emitting diode 8 is given in output.
Continuous consulting Fig. 8, is that the structure with the utility model the 4th preferred embodiment is under the foundation structure, wherein a kind of feasible detailed circuit structure.In the present embodiment; This voltage compensating circuit 53 is in series by a diode D2 and capacitor C 2 and resistance R 4, R5 parallel circuits; This temperature-compensation circuit 54 then is made up of a thermistor RH2, and connects with the resistance R 5 of this voltage compensating circuit 53, but not as limit.Float when the voltage of this power supply supply produces, and when making the direct current of these rectification circuit 331 supplies rise, with making the voltage of capacitor C 2 rise, cause the ground level rate of voltage rise of transistor Q8 to increase, and then shorten the time of transistor Q7 conducting; And when the working temperature of this switching power unit 7 rises,, also can cause the ground level rate of voltage rise of transistor Q8 to increase, and then shorten the time of transistor Q7 conducting with making the resistance of this thermistor RH2 increase.Be with, through above-mentioned design, and make and still can stablize output current, and then to reach the effect of dual compensation no matter be that voltage changes or working temperature is when changing.
In addition; Seeing also Fig. 9, is to be the basis with Fig. 1, explains that the light source supply module more can set up a dimmer 9 between this power supply 100 and this switching power unit 1; The electric energy of this power supply 100 supplies to give this switching power unit 1 through these dimmer 9 adjustment back outputs; Reaching the purpose of adjustment light-emitting diode 2 brightness, and after electric energy supplied to give, this switching circuit 40 can not produce because of the extra power supply of needs have the situation that postpones start; And then can avoid this dimmer 9 to produce with this switching power unit 1 and chase phenomenon, and can not cause light-emitting diode 2 to have the situation of flicker to produce.And except that first embodiment, also second, third and the 4th embodiment of where applicable simultaneously.
Mandatory declaration be, the switching power unit of the utility model first to fourth embodiment except that being applicable to above-mentioned isolated transformer, also can be respectively corresponding as Figure 10 to Figure 13 be applicable to non-isolated transformer and reach the effect that stabling current is exported.In addition, used diode D also can use the resistance replacement instead according to the demand that is provided with in the switching circuit of above-mentioned each accompanying drawing.Moreover; Used transistor Q1 in the switching circuit of above-mentioned each embodiment, Q3, Q5, Q7, and Figure 10 to Figure 13 in corresponding transistor also can use mos field effect transistor instead (Metal-Oxide-Semiconductor Field-Effect Transistor, MOSFET) replacement reaches identical purpose.Again, the above is merely the preferable possible embodiments of the utility model, and the equivalent structure that every application the utility model specification and claim are done changes, and ought to be included in the claim scope of the utility model.
Claims (12)
1. a light source supply module is characterized in that, includes:
At least one light-emitting diode;
One switching power unit includes an input port, an output port, a power-switching circuit, a switching circuit, wherein:
This input port is in order to electrically connect with a power supply;
This output port is in order to electrically connect with this light-emitting diode;
This power-switching circuit and this input port and this output port electrically connect, and in order to receiving this power supply, and export after converting the electric energy of a predetermined voltage or electric current to; And
This switching circuit is constituted with the mode of shaking the coil converter circuit; And electrically connect with this power-switching circuit; In order to conducting or block the electric energy of this power-switching circuit output, and limit electric current that this power-switching circuit output gives this light-emitting diode in a predetermined current value.
2. light source supply module as claimed in claim 1; It is characterized in that; Also comprise a voltage compensating circuit, electrically connect with this switching circuit, in order to control this switching circuit; When the voltage of this power supply supply is changed, still can limit electric current that this power-switching circuit output gives this light-emitting diode in this predetermined current value.
3. light source supply module as claimed in claim 2 is characterized in that, wherein, this voltage compensating circuit is in series by a diode and electric capacity and resistance parallel circuits.
4. light source supply module as claimed in claim 2; It is characterized in that; Also comprise a temperature-compensation circuit, electrically connect with this voltage compensating circuit, in order to control this switching circuit; When the working temperature of this switching power unit is changed, still can limit electric current that this power-switching circuit output gives this light-emitting diode in this predetermined current value.
5. light source supply module as claimed in claim 1; It is characterized in that; Also comprise a temperature-compensation circuit, electrically connect with this switching circuit, in order to control this switching circuit; When the working temperature of this switching power unit is changed, still can limit electric current that this power-switching circuit output gives this light-emitting diode in this predetermined current value.
6. like claim 4 or 5 described light source supply modules, it is characterized in that wherein, this temperature-compensation circuit is made up of thermistor.
7. light source supply module as claimed in claim 1 is characterized in that, wherein, this power-switching circuit includes a DC-DC converter, gives this light-emitting diode in order to output behind the electric energy that the electric energy that receives is converted to a predetermined voltage or electric current.
8. light source supply module as claimed in claim 7 is characterized in that, wherein; This power-switching circuit also includes a rectification circuit; Electrically connect with this input port, in order to receiving the electric energy of this power supply, and this DC-DC converter is given in output after converting thereof into direct current.
9. light source supply module as claimed in claim 1 is characterized in that, also comprises a dimmer, is between this power supply and this switching power unit, and the electric energy of this power supply supplies to give this switching power unit through this dimmer adjustment back output.
10. light source supply module as claimed in claim 1; It is characterized in that wherein, this switching circuit includes two transistors that are of coupled connections; This switching circuit is through making the mutual conducting of this two-transistor, and limits electric current that this power-switching circuit output gives this load in this predetermined current value.
11. light source supply module as claimed in claim 1; It is characterized in that; Wherein, This switching circuit includes a transistor AND gate one mos field effect transistor that is coupled and connects, and this switching circuit is through making the mutual conducting of this mos field effect transistor of this transistor AND gate, and limits electric current that this power-switching circuit output gives this load in this predetermined current value.
12. a light source supply module is characterized in that, includes:
At least one light-emitting diode;
One switching power unit includes an input port, an output port, a power-switching circuit, a switching circuit, wherein:
This input port is in order to electrically connect with a power supply;
This output port is in order to electrically connect with this light-emitting diode;
This power-switching circuit and this input port and this output port electrically connect, and in order to receiving this power supply, and export after converting the electric energy of a predetermined voltage or electric current to; And
This switching circuit is that the mode with the auto-excitation type circuit is constituted; And electrically connect with this power-switching circuit; In order to conducting or block the electric energy of this power-switching circuit output, and limit electric current that this power-switching circuit output gives this light-emitting diode in a predetermined current value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204513520U CN202353873U (en) | 2011-11-15 | 2011-11-15 | Light source supply module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204513520U CN202353873U (en) | 2011-11-15 | 2011-11-15 | Light source supply module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202353873U true CN202353873U (en) | 2012-07-25 |
Family
ID=46542827
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204513520U Expired - Fee Related CN202353873U (en) | 2011-11-15 | 2011-11-15 | Light source supply module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202353873U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102970797A (en) * | 2012-11-15 | 2013-03-13 | 深圳和而泰照明科技有限公司 | Secondary output current limiting circuit and device |
| WO2014121663A1 (en) * | 2013-02-07 | 2014-08-14 | 东林科技股份有限公司 | Dimmable light-emitting diode lamp |
| CN104540294A (en) * | 2015-01-06 | 2015-04-22 | 横店集团得邦照明股份有限公司 | Auto-excitation type LED conversion device for achieving electrodeless light dimming and control method |
-
2011
- 2011-11-15 CN CN2011204513520U patent/CN202353873U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102970797A (en) * | 2012-11-15 | 2013-03-13 | 深圳和而泰照明科技有限公司 | Secondary output current limiting circuit and device |
| WO2014121663A1 (en) * | 2013-02-07 | 2014-08-14 | 东林科技股份有限公司 | Dimmable light-emitting diode lamp |
| CN104540294A (en) * | 2015-01-06 | 2015-04-22 | 横店集团得邦照明股份有限公司 | Auto-excitation type LED conversion device for achieving electrodeless light dimming and control method |
| CN104540294B (en) * | 2015-01-06 | 2018-11-27 | 横店集团得邦照明股份有限公司 | A kind of auto-excitation type LED conversion equipment that realizing non-pole light regulating and control method |
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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: 20120725 Termination date: 20121115 |