CN103200748A - LED (light-emitting diode) road lamp circuit capable of automatically adjusting current, voltage and temperature - Google Patents
LED (light-emitting diode) road lamp circuit capable of automatically adjusting current, voltage and temperature Download PDFInfo
- Publication number
- CN103200748A CN103200748A CN2013101520314A CN201310152031A CN103200748A CN 103200748 A CN103200748 A CN 103200748A CN 2013101520314 A CN2013101520314 A CN 2013101520314A CN 201310152031 A CN201310152031 A CN 201310152031A CN 103200748 A CN103200748 A CN 103200748A
- Authority
- CN
- China
- Prior art keywords
- circuit
- led
- current
- voltage
- temperature
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- 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
Landscapes
- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The invention discloses an LED (light-emitting diode) road lamp circuit capable of automatically adjusting current, voltage and temperature, and the LED road lamp circuit comprises a voltage AC (alternating current) input circuit, an R/C (resistance/capacitance) circuit, an AC/DC (direct current) rectification circuit, a current-limiting resistor R0, a filter circuit, and detection circuits IC1, IC2 and IC3, wherein the AC/DC rectification circuit is connected with the current-limiting resistor R0, a filter output circuit is connected with a load LED, the output end of the load LED is connected with the detection circuit IC3, and the output end of the current-limiting resistor R0 is connected with the detection circuit IC1. The LED road lamp circuit is characterized in that the output end of the current-limiting resistor R0 is further connected with the detection circuit IC1, and the detection circuit IC2 is connected between the detection circuit IC1 and the detection circuit IC3. According to the invention, the current, voltage and temperature of an LED can be automatically adjusted based on the voltage and load changes and the temperature of the LED, thus solving the problem that the conventional LED depends on an amplified radiator to radiate due to high possibility of generating a high temperature; and in addition, the LED road lamp circuit has high reliability, and long service life up to 100,000 hours due to the fact that the power supply of the LED road lamp is controlled within the rated temperature range.
Description
Technical field
The present invention relates to a kind of LED road lamp power supply and realize regulating automatically control, relate in particular to the LED electric current, voltage, the variation of temperature and load is controlled automatically, makes LED adapt to operating voltage and electric current automatically.Prolong LED useful life.
Background technology
The LED power supply of at present domestic and international famous brand name adopts the mode of power supplies such as constant current, constant voltage, capacitance-resistance mostly, has defective in various degree.1: constant-current supply is with the LED series connection, and mode in parallel calculates a kind of power supply of the electric current office of gross power.When break down in a certain road of LED, the LED of operate as normal will be under the non-state and work, and the electric current in the specified unit can not change, and normal LED operating current is just strengthened suddenly virtually.Cause to be in the LED that works under the normal condition and will to produce quick light decay early stage the damage.Thereby cause the whole LED lamp not work.2: constant voltage, the capacitance-resistance power supply: the LED properties of materials has determined it affected by environment bigger, the variation of temperature, voltage is when power source voltage changes, even several variation at percent zero point.Electric current will increase, and temperature rises, and shorten the useful life of same LED, and the LED street lamp can not be worked.
Summary of the invention
At the actual condition of above-mentioned LED road lamp power supply, the object of the present invention is to provide the LED street lamp circuit of a kind of automatic adjusting current/voltage and temperature, be at current-limiting resistance R
0Output and the LED street lamp between be provided with testing circuit IC
1, testing circuit IC
2, the output of LED street lamp is provided with testing circuit IC
3, making no matter which paths of LEDs has problem, street lamp can both be in normal operating conditions.
Technical scheme of the present invention realizes in the following manner: the LED street lamp circuit of a kind of automatic adjusting current/voltage and temperature, and by voltage AC input circuit, capacitance-resistance R/C circuit, AC/DC rectification circuit, current-limiting resistance R
0And filter circuit, load LED, testing circuit IC
1, IC
2And IC
3Form AC/DC rectification circuit and current-limiting resistance R
0Connect, the filtering output circuit is connected with load LED, and the output of load LED is connected with testing circuit IC
3, it is characterized in that: described current-limiting resistance R
0Output also be provided with testing circuit IC
1, testing circuit IC
1With testing circuit IC
3Between also be provided with and detect control circuit IC
2
Described testing circuit IC
1Be detectability leakage resistance R
0Potential difference; Testing circuit IC
3Be the temperature sensing circuit of load LED, IC
2Be IC1, IC3 is for detecting control circuit.IC
2Feed back to R/C circuit automatic switchover R/C, the current/voltage of control load LED and variations in temperature.
The present invention, the current/voltage temperature that can regulate LED according to the variation of voltage, electric current and load automatically.No matter which paths of LEDs has problem, LED can both be in normal operating conditions, keeps the light of self well-illuminated; According to the voltage-current characteristic of LED, solved that traditional LED easily produces high temperature and by increasing the difficult problem of radiator heat-dissipation; The reliability height, the LED road lamp power supply, control is in rated temperature, and life of product can reach 100000 hours.
Description of drawings
Fig. 1 is block diagram of the present invention.
Fig. 2 is schematic diagram of the present invention.
Embodiment
Known that by Fig. 1 the LED street lamp circuit of a kind of automatic adjusting current/voltage and temperature is by voltage AC input circuit, R/C resistance-capacitance circuit, AC/DC rectification, current-limiting resistance R
0And filter circuit, load LED, testing circuit IC
1, IC
2And IC
3Form.AC/DC rectification circuit and current-limiting resistance R
0Connect, the filtering output circuit is connected with load LED, and the output of load LED is connected with testing circuit IC
3, described current-limiting resistance R
0Output also be provided with testing circuit IC
1, testing circuit IC
1With testing circuit IC
3Between also be provided with testing circuit IC
2
Described testing circuit IC
1Be detectability leakage resistance R
0Potential difference; Testing circuit IC
2Be IC1, IC3 is for detecting control circuit.IC
2Feed back to R/C circuit automatic switchover R/C, current/voltage and the variations in temperature of final control load LED.
Testing circuit IC
3Be the temperature sensing circuit of load LED, by testing circuit IC
2Feed back to resistance-capacitance circuit R/C, the electric current and voltage of control load LED and variations in temperature.
When AC voltage changes, when LED generation scarce a road or short circuit, be connected current-limiting resistance R
°Testing circuit IC
1Work is also passed through testing circuit IC
2Give resistance-capacitance circuit R/C, circuit automatic switchover R/C with signal feedback
,The current/voltage of control load LED and variations in temperature. export a stable power.
When described load LED working temperature surpasses rated temperature, testing circuit IC
3Work, by the I2 resistance-capacitance circuit R/C that automaticallyes switch, change output voltage Current Control temperature, working temperature, operating voltage, operating current are changed with load, led circuit reaches brightness and does not fall, electric current and voltage in ultra-voltage not, not supercurrent, not reliable and stable work in the environment of overtemperature degree, the purpose temp autocontrolled, that the life-span prolongs.
Claims (2)
1. LED street lamp circuit of automatically regulating current/voltage and temperature is by voltage AC input circuit, R/C resistance-capacitance circuit, AC/DC rectification, current-limiting resistance R
0And filter circuit, load LED, testing circuit IC
1, IC
2And IC
3Form; AC/DC rectification circuit and current-limiting resistance R
0Connect, the filtering output circuit is connected with load LED, and the output of load LED is connected with testing circuit IC
3, it is characterized in that: described current-limiting resistance R
0Output also be provided with testing circuit IC
1, testing circuit IC
1With testing circuit IC
3Between also be provided with testing circuit IC
2
2. the LED street lamp circuit of a kind of automatic adjusting current/voltage according to claim 1 and temperature is characterized in that: testing circuit IC
1Be detectability leakage resistance R
0Potential difference; Testing circuit IC
2Be I1, the detection control circuit of I3, IC
3Be the temperature sensing circuit of load LED, by testing circuit I1, the detection of I3 finally feeds back to IC
2Testing circuit is controlled R/C, electric current and voltage and the variation of temperature of final control load LED.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101520314A CN103200748A (en) | 2013-04-27 | 2013-04-27 | LED (light-emitting diode) road lamp circuit capable of automatically adjusting current, voltage and temperature |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101520314A CN103200748A (en) | 2013-04-27 | 2013-04-27 | LED (light-emitting diode) road lamp circuit capable of automatically adjusting current, voltage and temperature |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103200748A true CN103200748A (en) | 2013-07-10 |
Family
ID=48723057
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013101520314A Pending CN103200748A (en) | 2013-04-27 | 2013-04-27 | LED (light-emitting diode) road lamp circuit capable of automatically adjusting current, voltage and temperature |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103200748A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103260315A (en) * | 2013-05-27 | 2013-08-21 | 光明国际（镇江）电气有限公司 | LED street lamp circuit |
| CN106714420A (en) * | 2016-12-16 | 2017-05-24 | 上海希格玛高技术有限公司 | Circuit for controlling stable output of lamp tube intensity |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2824495Y (en) * | 2005-09-23 | 2006-10-04 | 宋嘉鸿 | Piano key type multi-stage LED light modulating desk lamp |
| CN101532608A (en) * | 2008-03-13 | 2009-09-16 | 杨书水 | Direct current multi-purpose large-power LED lighting energy-saving lamp of microcomputer |
| CN201550329U (en) * | 2009-12-03 | 2010-08-11 | 霸州市旭丰光电科技有限公司 | Constant-current driving circuit of LED street lamp |
| US20130033179A1 (en) * | 2011-06-07 | 2013-02-07 | Switch Bulb Company, Inc. | Thermal protection circuit for an led bulb |
| CN203193987U (en) * | 2013-04-27 | 2013-09-11 | 光明国际（镇江）电气有限公司 | LED streetlamp circuit capable of adjusting current, voltage and temperature automatically |
-
2013
- 2013-04-27 CN CN2013101520314A patent/CN103200748A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2824495Y (en) * | 2005-09-23 | 2006-10-04 | 宋嘉鸿 | Piano key type multi-stage LED light modulating desk lamp |
| CN101532608A (en) * | 2008-03-13 | 2009-09-16 | 杨书水 | Direct current multi-purpose large-power LED lighting energy-saving lamp of microcomputer |
| CN201550329U (en) * | 2009-12-03 | 2010-08-11 | 霸州市旭丰光电科技有限公司 | Constant-current driving circuit of LED street lamp |
| US20130033179A1 (en) * | 2011-06-07 | 2013-02-07 | Switch Bulb Company, Inc. | Thermal protection circuit for an led bulb |
| CN203193987U (en) * | 2013-04-27 | 2013-09-11 | 光明国际（镇江）电气有限公司 | LED streetlamp circuit capable of adjusting current, voltage and temperature automatically |
Non-Patent Citations (1)
| Title |
|---|
| 沙占友: "大功率LED的温度补偿技术及其应用", 《电源技术应用》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103260315A (en) * | 2013-05-27 | 2013-08-21 | 光明国际（镇江）电气有限公司 | LED street lamp circuit |
| CN106714420A (en) * | 2016-12-16 | 2017-05-24 | 上海希格玛高技术有限公司 | Circuit for controlling stable output of lamp tube intensity |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9142962B2 (en) | Wall box device for managing energy | |
| US11877362B2 (en) | Light emitting diode thermal foldback control device and method | |
| TWM461277U (en) | Multiple-specification mixing-use LED chip driving device | |
| CN202713690U (en) | Dimming interface circuit used for LED drive power | |
| CN103687171A (en) | Power supply device and lighting device | |
| CN203193987U (en) | LED streetlamp circuit capable of adjusting current, voltage and temperature automatically | |
| CN103648220A (en) | Controller for automatically detecting maximum working current of light source and detection method thereof | |
| CN103200748A (en) | LED (light-emitting diode) road lamp circuit capable of automatically adjusting current, voltage and temperature | |
| US7728532B2 (en) | Circuit device for light-emitting diode driving and stabilizing system | |
| CN203840609U (en) | LED circuit having overheating protection function | |
| CN204559932U (en) | Controller applied to street lamp | |
| CN201097468Y (en) | LED light source circuit | |
| CN102333408A (en) | Switching system and method for operating at least one discharge lamp | |
| CN104735879A (en) | Led circuit | |
| CN104918385A (en) | Temperature detection circuit and LED (Light-Emitting Diode) lamp provided with temperature control protection circuit | |
| CN108811257A (en) | A kind of control method of LED illumination System and LED load circuit | |
| CN202048996U (en) | Temperature monitoring circuit and led lamp | |
| CN201910949U (en) | Stepped constant-current source circuit structure | |
| CN104219827A (en) | Active self-adjusting circuit | |
| CN102695336A (en) | LED (light-emitting diode) lamp | |
| CN203708589U (en) | Linear constant current LED driving circuit possessing temperature compensation | |
| CN203643030U (en) | Temperature indicating circuit and electronic products | |
| CN204721676U (en) | The LED lamp of a kind of temperature sensing circuit and band temperature control protective circuit | |
| CN203261555U (en) | LED street lamp circuit | |
| CN203840611U (en) | LED circuit having overheating protection function |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130710 |