CN201267029Y - LED street lamp and drive device thereof - Google Patents
LED street lamp and drive device thereof Download PDFInfo
- Publication number
- CN201267029Y CN201267029Y CNU2008201469030U CN200820146903U CN201267029Y CN 201267029 Y CN201267029 Y CN 201267029Y CN U2008201469030 U CNU2008201469030 U CN U2008201469030U CN 200820146903 U CN200820146903 U CN 200820146903U CN 201267029 Y CN201267029 Y CN 201267029Y
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- circuit
- control circuit
- light source
- street lamp
- led street
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/72—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps in street lighting
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- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The utility model belongs to the technical filed of combining illumination and electricity, particular relates to a driving device of an LED street lamp, which comprises a power supply circuit, a control circuit, a drive circuit and an optic feedback circuit; the power supply circuit is connected with the control circuit and the drive circuit and provides working power supply to the control circuit, the drive circuit and light sources; the optic feedback circuit is connected with input end of the control circuit; and the output end of the control circuit is connected with the drive circuit. The utility model also provides an LED street lamp which also comprises the light source, the power supply circuit is connected with the light source and provides the working power supply to the light source; the optic feedback circuit is connected with input end of the control circuit; the output end of the control circuit is connected with the input end of the drive circuit; and the out put end of the drive circuit is connected with the light source. The driving device has simple structure, the control circuit outputs a constant current which drives the light source so as to improve the utilization rate of the light source thereof and the stability and the reliability of systems.
Description
Technical field
The utility model belongs to illumination and the technical field that combines of electricity, especially relates to a kind of LED street lamp drive unit.
Background technology
Shortcomings such as the light source of existing street lamp often uses incandescent lamp, halogen lamp high-pressure mercury-vapor lamp etc., and it is big to exist power consumption, and the life-span is short.In recent years, use LED also to drop into research and use gradually as the street lamp of light source.LED has power consumption little as the green light source of novel environmental protection, brightness height (comparing under the equal power consumption), and volume is little, advantages such as life-span length.Though adopt LED to have aforesaid advantage as light source, but compare with employed bulb in the prior art, use LED lamp group in the brightness that can provide, still to be apparent not enough as light source, in order to reach brighter illuminating effect, the light-source system of LED street lamp all is to use many high-powered LED lamp groups at present, existing LED street lamp technology is used the scheme of rectification constant voltage driving, LED for the current mode device, it is low to exist utilance, the luminous consistency of LED is poor, lack of homogeneity, and influenced by the utility grid voltage fluctuation and cause shortcomings such as brightness instability.
The utility model content
The purpose of this utility model is to provide a kind of LED street lamp drive unit, and it is low to be intended to solve existing LED street lamp drive unit light source utilance, the problem of the stability of a system and poor reliability.
The utility model is achieved in that a kind of LED street lamp drive unit, and described device comprises:
Power circuit, control circuit, drive circuit and optical feedback circuit, described power circuit is connected with drive circuit with described control circuit, for described control circuit, drive circuit and light source provide working power;
Described optical feedback circuit is connected with the input of described control circuit, and the output of described control circuit is connected with described drive circuit.
The utility model also provides a kind of LED street lamp, it comprises: power circuit, control circuit, drive circuit, light source and optical feedback circuit, power circuit is connected with control circuit, drive circuit and light source, for control circuit, drive circuit and light source provide working power; Optical feedback circuit is connected with the input of control circuit, and the output of control circuit is connected with the input of drive circuit, and the output of drive circuit is connected with light source.
The driving device structure that the utility model provides is simple, the electric current that control circuit output is constant, and the constant-current driving light source makes its light source utilance improve, and has improved the stability and the reliability of system.
Description of drawings
Fig. 1 is the structure chart of the LED street lamp drive unit that provides of the utility model embodiment;
Fig. 2 is the structure chart of the utility model implementation column LED street lamp;
Fig. 3 is the circuit diagram of the utility model embodiment LED street lamp.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer,, the utility model is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.
Fig. 1 shows the structure of the LED street lamp drive unit that the utility model provides, and for convenience of explanation, only shows the part relevant with the utility model.
In the utility model, utilize this drive unit can realize control to whole system, guarantee the stability of its light source luminescent intensity.
The utility model also provides a kind of LED street lamp, and Fig. 2 shows the utility model LED lamp post structure figure is provided, and for convenience of explanation, only shows the part relevant with the utility model.
It comprises power circuit 1, control circuit 4, drive circuit 2, light source 3 and optical feedback circuit 5, and power circuit 1 is connected with control circuit 4, drive circuit 2 and light source 3, for control circuit 4, drive circuit 2 and light source 3 provide working power; Optical feedback circuit 5 is connected with the input of control circuit 4, and the output of control circuit 4 is connected with the input of drive circuit 2, and the output of drive circuit 2 is connected with light source 3.
Fig. 3 shows the circuit diagram that the utility model provides the LED street lamp, for convenience of explanation, only shows the part relevant with the utility model.
Wherein exchange the 110V/220V power supply as power circuit 1, be control circuit 4, drive circuit 2 and light source 3 provide operating voltage, light source 3 comprises LED lamp group 31, it is made up of multi-group light-emitting diode, power circuit 1 output voltage directly is connected on the positive terminal of light-emitting diode, control circuit 4 comprises controller U1, capacitor C 2 and resistance R 1, its middle controller comprises input, power end, earth terminal, frequency adjustment end, gate terminals and correction end, wherein power end is by capacitor C 2 ground connection, the appearance value of capacitor C 2 is used for determining controller U1 internal frequency, earth terminal is connected with ground, and resistance R 1 one ends link to each other other end ground connection with frequency adjustment end.Wherein resistance R 1 is used to be provided with the operating frequency of controller U1, optical feedback circuit 5 comprises the photo resistance TR1 that is used to receive light source 3 luminous intensities, the end of photo resistance TR1 is connected with the linear adjustable side of control circuit 4, and the other end is connected with the power end of control circuit 4; Wherein photo resistance TR1 is near LED lamp group, guarantees its light signal of being sent of induction LED lamp group fully, improves its accuracy; Drive circuit 2 comprises switching tube Q1, and wherein first end of switching tube is connected with power circuit 1, and second end is connected with the gate terminals of control circuit, and the 3rd end is connected with the correction end, and ground connection.
This drive circuit 2 also comprises diode D1, resistance R 2 and energy storage software L1, wherein an end of resistance R 2 links to each other with the 3rd end of switching tube, other end ground connection, wherein resistance R 2 is used to be provided with the turn-on frequency of switching tube Q1, the positive pole of diode D1 links to each other with power circuit, negative pole is connected with first end of switching tube, wherein diode D1 carries out voltage stabilizing with the bias voltage of switching tube Q1, prevent that switching tube from carrying out misoperation, the end of energy-storage travelling wave tube L1 is connected with first end of switching tube Q1, the other end links to each other with LED lamp group 31, its a period of time at switching tube Q1 state exchange provides stable voltage for LED lamp group 31, guarantee the unanimity of its luminous intensity, here the state exchange of switching tube Q1 be meant by by to conducting or by be conducting to by.
Wherein switching tube Q1 is preferably M0SFET.
Wherein light source comprises that also capacitor C 1, one end links to each other an end ground connection with the positive pole of LED lamp group 31 light-emitting diodes, the voltage of importing for input LED lamp group 31 carries out filtering voltage regulation, guarantee the stable of input voltage, prevent LED lamp group 31 because the instability of input voltage causes its brightness instability to occur.
Below its work course of work is introduced: the alternating current of 220V provides working power for the whole LED street lamp, LED lamp group 31 in the driving light source is luminous, wherein photo resistance TR1 detects the luminous intensity of LED lamp group 31, its detected light intensity signal is fed back to controller U1 in the control circuit 4, if light then increases the resistance of its photo resistance too by force, reduce its electric current, if light then reduces the resistance of photo resistance a little less than too, strengthen its electric current, reach the stable of light output and can regulate brightness according to environment.Its middle controller U1 is as the core component of control circuit, controller U1 has determined the size of switching tube output current, guarantee constant output current, to reach the effect of constant current driven LED lamp group, guarantee the utilance of its light source, wherein diode is used for the bias voltage of stable switch pipe, gate terminals output 1 and 0 signal of controller, it proofreaies and correct the frequency of end according to the control of the magnitude of voltage on the resistance R 2 gate terminals output high-low level, the conducting of by-pass cock pipe and by the time, the voltage signal of switching tube output is stored on the inductance L 1, provide stable voltage signal by it for LED lamp group, guarantee the stability of its luminosity,, guaranteed the stability and the reliability of system to reach the effect of LED lamp group brightness stability.
The above only is preferred embodiment of the present utility model; not in order to restriction the utility model; all any modifications of within spirit of the present utility model and principle, being done, be equal to and replace and improvement etc., all should be included within the protection range of the present utility model.
Claims (9)
1, a kind of LED street lamp drive unit, it is characterized in that, described device comprises: power circuit, control circuit, drive circuit and optical feedback circuit, and described power circuit is connected with drive circuit with described control circuit, for described control circuit, drive circuit and light source provide working power;
Described optical feedback circuit is connected with the input of described control circuit, and the output of described control circuit is connected with described drive circuit.
2, LED street lamp drive unit as claimed in claim 1 is characterized in that described control circuit comprises:
Controller, first electric capacity and first resistance, an end ground connection of described first electric capacity, the other end is connected with the power end of described controller, an end ground connection of the described first electricity group, the other end is connected with the frequency adjustment end of described controller.
3, LED street lamp drive unit as claimed in claim 1 is characterized in that described optical feedback circuit comprises:
Be used to receive the photo resistance of light source luminescent intensity, an end of described photo resistance is connected with the linear adjustable side of described control circuit, and the other end is connected with the power end of described control circuit.
4, LED street lamp drive unit as claimed in claim 1 is characterized in that described drive circuit comprises:
Switching tube, first end of described switching tube is connected with the correction end of described control circuit, and ground connection, and second end of the described pipe that opens the light is connected with the gate terminals of described control circuit, and the 3rd end of described switching tube is connected with described power circuit.
5, LED street lamp drive unit as claimed in claim 4 is characterized in that described drive circuit also comprises:
Second resistance, be used for diode and energy-storage travelling wave tube with the voltage stabilizing of described switching tube bias voltage, the drain electrode of described switching tube is connected with described power circuit by described diode, the source electrode of described switching tube is by described second grounding through resistance, one end of described energy-storage travelling wave tube is connected with the drain electrode of described switching tube, and the other end is connected with described light source.
6, as claim 4 or 5 described LED street lamp drive units, it is characterized in that described switching tube is MOSFET.
7, a kind of LED street lamp is characterized in that, comprises power circuit, control circuit, drive circuit, light source and optical feedback circuit, and power circuit is connected with control circuit, drive circuit and light source, for control circuit, drive circuit and light source provide working power; Optical feedback circuit is connected with the input of control circuit, and the output of control circuit is connected with the input of drive circuit, and the output of drive circuit is connected with light source.
8, LED street lamp as claimed in claim 7 is characterized in that, described light source comprises: LED lamp group, described LED lamp group is connected with described drive circuit.
9, LED street lamp drive unit as claimed in claim 8 is characterized in that described light source also comprises:
Be used for second electric capacity with the voltage voltage stabilizing of input LED lamp group, an end of described second electric capacity is connected with described power circuit, other end ground connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201469030U CN201267029Y (en) | 2008-08-22 | 2008-08-22 | LED street lamp and drive device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201469030U CN201267029Y (en) | 2008-08-22 | 2008-08-22 | LED street lamp and drive device thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201267029Y true CN201267029Y (en) | 2009-07-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201469030U Expired - Fee Related CN201267029Y (en) | 2008-08-22 | 2008-08-22 | LED street lamp and drive device thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201267029Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104812137A (en) * | 2015-04-30 | 2015-07-29 | 成都锐奕信息技术有限公司 | Adaptive dimming OLED drive circuit |
| CN110506450A (en) * | 2017-03-31 | 2019-11-26 | 欧司朗光电半导体有限公司 | Luminaire and luminescent system |
-
2008
- 2008-08-22 CN CNU2008201469030U patent/CN201267029Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104812137A (en) * | 2015-04-30 | 2015-07-29 | 成都锐奕信息技术有限公司 | Adaptive dimming OLED drive circuit |
| CN110506450A (en) * | 2017-03-31 | 2019-11-26 | 欧司朗光电半导体有限公司 | Luminaire and luminescent system |
| US11373985B2 (en) | 2017-03-31 | 2022-06-28 | Osram Oled Gmbh | Illumination device and illumination system |
| CN110506450B (en) * | 2017-03-31 | 2022-07-26 | 欧司朗光电半导体有限公司 | Light emitting device and light emitting system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090701 Termination date: 20150822 |
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| EXPY | Termination of patent right or utility model |