CN201111589Y - Integrated LED road lamp - Google Patents
Integrated LED road lamp Download PDFInfo
- Publication number
- CN201111589Y CN201111589Y CNU2007200457188U CN200720045718U CN201111589Y CN 201111589 Y CN201111589 Y CN 201111589Y CN U2007200457188 U CNU2007200457188 U CN U2007200457188U CN 200720045718 U CN200720045718 U CN 200720045718U CN 201111589 Y CN201111589 Y CN 201111589Y
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- China
- Prior art keywords
- circuit
- resistance
- street lamp
- rectifying circuit
- led street
- 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.)
- Expired - Fee Related
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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 relates to an integrated LED street lamp, which comprises a lamp shell, a panel, a plurality of LED lamps that are arranged on the panel and a drive power source; a buck rectifying circuit and an automatic temperature compensating circuit are arranged inside the drive power source, and the automatic temperature compensating circuit is arranged on the panel and connected among the buck rectifying circuit and the LED lamps; the buck rectifying circuit comprises two resistance-capacitance buck circuits and a rectifying circuit, wherein, the two resistance-capacitance buck circuits are respectively and serially connected among two input ends of the rectifying circuit and a city power source. Consequently, the LED street lamp provided by the utility model is not affected by the temperature of external environment, can lead the working current of the LED lamps to keep consistent, has simple circuits and simultaneously can greatly prolong the service life of the LED lamps.
Description
Technical field
The utility model relates to a kind of street lamp, particularly a kind of integral LED street lamp of being made up of large-power light-emitting diodes.
Background technology
The LED lamp is the new light sources that just occurs recently, be characterized in energy-conservation and the long-life, but the operating current of LED lamp be subjected to easily the LED lamp the PN junction temperature fluctuation and produce fluctuation, when electric current flows through the LED lamp, the PN junction temperature of LED lamp rises, its internal resistance meeting reduces, if current-limiting resistance does not increase thereupon, the LED lantern festival produces light decay because operating current is excessive.In present LED lamp drive circuit, civil power is through general reduction voltage circuit step-down, and the rectification circuit rectification is after the resistance current limliting, directly supply load is the LED lamp, because of not being provided with the temperature proportion resistor in the current-limiting resistance, when the PN junction temperature of LED lamp rose, its internal resistance reduced, operating current increases thereupon, the LED lamp produces light decay because operating current is excessive, shortened service life, can't embody the advantage of LED lamp as new light sources.
The utility model content
The purpose of this utility model is: provide a kind of ambient temperature that is not subjected to influence, can make the operating current of LED lamp keep constant, and circuit is simple, the integral LED street lamp that can prolong the service life of LED lamp greatly simultaneously.
For achieving the above object, the technical solution adopted in the utility model is: a kind of integral LED street lamp, comprise lamp housing, panel, be installed in a plurality of LED lamps and driving power on the panel, described driving power comprises step-down rectifying circuit and temperature self-compensation circuit, described temperature self-compensation circuit is connected between step-down rectifying circuit and the LED lamp, and the temperature self-compensation circuit is installed on the panel.
The said temperature auto compensatng circuit is a bridge circuit, and it is mainly by negative tempperature coefficient thermistor R
S, semistor R
TWith two fixed resistance R6, R5 be connected in series successively formation, wherein negative tempperature coefficient thermistor R
SWith semistor R
TTie point and the tie point between fixed resistance R6 and the R5 be the input of described temperature self-compensation circuit, it links to each other with the output of step-down rectifying circuit; Semistor R
TTie point and negative tempperature coefficient thermistor R with fixed resistance R6
SWith the tie point of fixed resistance R5 be the output of temperature self-compensation circuit, it links to each other with the LED lamp.And described step-down rectifying circuit comprises two resistance-capacitance depressurization circuit and rectification circuit, and wherein two resistance-capacitance depressurization circuit are serially connected in respectively between two inputs and mains supply of rectification circuit.
Can do further improvement as the utility model: select the electric capacity in two resistance-capacitance depressurization circuit for use high pressure CBB electric capacity.
Can do further improvement as the utility model: between two inputs of two resistance-capacitance depressurization circuit, be parallel with a filter capacitor C1, and and mains supply between be serially connected with a porcelain base thermistor R1.
Can do further improvement as the utility model: between two outputs of described step-down rectifying circuit, be parallel with a piezo-resistance R4.
After adopting said structure, the utility model compared with prior art has following advantage:
1. because of in circuit, having increased thermistor, can be when the LED temperature change, thermistor is in time made variation, can make the operating current of LED lamp keep constant.
2. because of reduction voltage circuit adopts two resistance-capacitance depressurization circuit, can improve power factor, reduce power consumption, conserve energy, electric capacity adopts high pressure CBB electric capacity, can make input voltage range from AC90V～AC450, is applicable to the electrical network of any country.
3. because of having adopted piezo-resistance, can when thunderbolt take place, holding circuit prolongs service life of LED lamp.
4. because of having adopted porcelain base thermistor, when start, can prevent the impact of surge current, prolong the service life of LED lamp.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples:
Fig. 1 is the structural representation of the utility model LED road lamp cap.
Fig. 2 is the circuit theory diagrams of the utility model driving power.
The specific embodiment
As shown in Figure 1, the driving power described in the utility model comprises step-down rectifying circuit 1, temperature self-compensation circuit 2, load LED lamp 3.
Step-down rectifying circuit 1 comprises resistance-capacitance depressurization circuit and the rectification circuit of forming after resistance-capacitance depressurization circuit, capacitor C 3 and resistance R 3 parallel connections of forming in capacitor C 2 and resistance R 2 backs in parallel, wherein two resistance-capacitance depressurization circuit are serially connected in respectively between two inputs and mains supply of rectification circuit, and described capacitor C 2, C3 are high pressure CBB electric capacity.
Temperature self-compensation circuit 2 is a bridge circuit, and it is mainly by negative tempperature coefficient thermistor R
S, semistor R
TWith two fixed resistance R6, R5 be connected in series successively formation, wherein negative tempperature coefficient thermistor R
SWith semistor R
TTie point and the tie point between fixed resistance R6 and the R5 be the input of described temperature self-compensation circuit, it links to each other with the output of step-down rectifying circuit; Semistor R
TTie point and negative tempperature coefficient thermistor R with fixed resistance R6
SWith the tie point of fixed resistance R5 be the output of temperature self-compensation circuit, it links to each other with the LED lamp.
Piezo-resistance R4 is connected in parallel between two outputs of step-down rectifying circuit 4.
A filter capacitor C1 is connected in parallel between two inputs of two resistance-capacitance depressurization circuit, and is serially connected with a porcelain base thermistor R1 between two inputs of two resistance-capacitance depressurization circuit and mains supply.
As shown in Figure 2, the LED road lamp cap is by lamp housing, panel 4, LED lamp 6 and driving power 5 are formed, driving power 5 places panel 4 tops, LED lamp 6 is installed in panel 4 belows, semistor RT in the driving power and negative tempperature coefficient thermistor RS are close to the LED lamp and install, make itself and LED lamp be in same temperature face, make the control of temperature characterisitic reach optimum state, when the ambient temperature height, when the PN junction temperature of LED lamp rises, its internal resistance reduces, but this moment, semistor RT resistance increased, and negative tempperature coefficient thermistor RS resistance is constant substantially, reduced the operating current of a part of LED street lamp, make the operating current of LED street lamp be tending towards constant, stop LED that light decay takes place, improve the service life of LED.When ambient temperature is low, when the PN junction temperature of LED lamp descends, its internal resistance increases, this moment, semistor RT resistance was constant substantially, negative tempperature coefficient thermistor RS resistance increases, increased the operating current of a part of LED street lamp, made the operating current of LED street lamp also be tending towards constant, guaranteed that the LED street lamp also can send normal brightness at low temperatures.
In the utility model, increased the quick resistance R 1 of porcelain base, the surge current when preventing to start shooting is to the impact of LED street lamp; Increased the auto thermal compensation current dividing circuit, when high temperature, prevented that the LED street lamp from producing light decay, sends normal brightness during low temperature; Increased piezo-resistance R4, when thunderbolt and load open circuit took place, holding circuit had had this triple protection, can prolong the service life of LED street lamp greatly; Owing to adopted the reversible capacitance reduction voltage circuit, improved power factor, reduced energy consumption, and after the outage of LED street lamp, resistance R 2 and R3 can discharge capacitor C 2 and C3 goes up the electric charge of storage, prolongs the service life of LED street lamp drive circuit, has embodied LED Lantern Festival energy and feature of long life.
Claims (6)
1. integral LED street lamp, comprise lamp housing, panel, be installed in a plurality of LED lamps and driving power on the panel, it is characterized in that driving power comprises step-down rectifying circuit and temperature self-compensation circuit, described temperature self-compensation circuit is connected between step-down rectifying circuit and the LED lamp, and the temperature self-compensation circuit is installed on the panel.
2. integral LED street lamp as claimed in claim 1 is characterized in that described temperature self-compensation circuit is a bridge circuit, and it is mainly by negative tempperature coefficient thermistor R
S, semistor R
TWith two fixed resistance R6, R5 be connected in series successively formation, wherein negative tempperature coefficient thermistor R
SWith semistor R
TTie point and the tie point between fixed resistance R6 and the R5 be the input of described temperature self-compensation circuit, it links to each other with the output of step-down rectifying circuit; Semistor R
TTie point and negative tempperature coefficient thermistor R with fixed resistance R6
SWith the tie point of fixed resistance R5 be the output of temperature self-compensation circuit, it links to each other with the LED lamp.
3. integral LED street lamp as claimed in claim 1 or 2, it is characterized in that described step-down rectifying circuit comprises two resistance-capacitance depressurization circuit and rectification circuit, described two resistance-capacitance depressurization circuit are serially connected in respectively between two inputs and mains supply of rectification circuit.
4. integral LED street lamp as claimed in claim 3 is characterized in that being parallel with a filter capacitor C1 between two inputs of described two resistance-capacitance depressurization circuit, and and mains supply between be serially connected with a porcelain base thermistor R1.
5. integral LED street lamp as claimed in claim 3 is characterized in that being parallel with a piezo-resistance R4 between two outputs of described step-down rectifying circuit.
6. integral LED street lamp as claimed in claim 4 is characterized in that being parallel with a piezo-resistance R4 between two outputs of described step-down rectifying circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200457188U CN201111589Y (en) | 2007-09-10 | 2007-09-10 | Integrated LED road lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200457188U CN201111589Y (en) | 2007-09-10 | 2007-09-10 | Integrated LED road lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201111589Y true CN201111589Y (en) | 2008-09-10 |
Family
ID=39963332
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200457188U Expired - Fee Related CN201111589Y (en) | 2007-09-10 | 2007-09-10 | Integrated LED road lamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201111589Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102159012A (en) * | 2011-04-15 | 2011-08-17 | 周必忠 | Semiconductor illuminating lamp |
| CN102954396A (en) * | 2011-08-28 | 2013-03-06 | 鹤山市明华电器五金有限公司 | High-reliability light-emitting diode (LED) street lamp system capable of avoiding on-rod maintenance |
-
2007
- 2007-09-10 CN CNU2007200457188U patent/CN201111589Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102159012A (en) * | 2011-04-15 | 2011-08-17 | 周必忠 | Semiconductor illuminating lamp |
| CN102159012B (en) * | 2011-04-15 | 2013-10-30 | 周必忠 | Semiconductor illuminating lamp |
| CN102954396A (en) * | 2011-08-28 | 2013-03-06 | 鹤山市明华电器五金有限公司 | High-reliability light-emitting diode (LED) street lamp system capable of avoiding on-rod maintenance |
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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: 20080910 |