CN205666994U - Exchange energy -conserving traffic signal lamp of LED with an automatic light meter who directly drives - Google Patents
Exchange energy -conserving traffic signal lamp of LED with an automatic light meter who directly drives Download PDFInfo
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- CN205666994U CN205666994U CN201620551792.6U CN201620551792U CN205666994U CN 205666994 U CN205666994 U CN 205666994U CN 201620551792 U CN201620551792 U CN 201620551792U CN 205666994 U CN205666994 U CN 205666994U
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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
- Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
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- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The utility model provides an exchange energy -conserving traffic signal lamp of LED with an automatic light meter who directly drives, directly drives controller [ 3 ], photosensitive sensor [ 4 ], dimming control unit [ 5 ], LED unit [ 6 ] including input protected location [ 1 ], rectifier unit [ 2 ], interchange. The dimming control unit directly drives the control voltage that controller output followed the ambient light illumination change according to the change of photosensitive sensor's signal to the interchange, directly drives adjusting luminance of controller realization LED through exchanging. Its advantage is the filter capacitance who does not need the large capacity, and outer member is few, thus with low costs, the reliability is high to power factor is high, efficient, has good performance with an automatic light meter, is favorable to energy -conservation.
Description
Technical field
The present invention relates to a kind of traffic light, the LED energy-saving road traffic signal of a kind of directly driven by AC
Lamp, belongs to low-carbon (LC) traffic and electric lighting field of energy-saving technology.
Background technology
LED (light emitting diode) is a kind of new type light source, has that power consumption is little, brightness is high, volume is little, lightweight, the life-span is long
Etc. advantage.With LED have that visibility is good as the traffic light of light source, the advantage such as energy saving, reaction are fast, progressively replace white
Vehement lamp, low-voltage halogen tungsten make road traffic signal lamp.But the LED signal lamp of currently used electric main typically requires rectification filter
Ripple, and filter the capacitor needing larger capacity, volume is big, and the life-span is short, the pulse current harmonic content that rectifying and wave-filtering is formed
Greatly, reduce the power factor of light fixture, have impact on the performance of LED signal lamp.
Further, some current LED signal lamp can not regulate luminous intensity according to ambient light, when ambient light is weak
With dazzling feeling.
Summary of the invention
It is an object of the invention to propose the LED energy-saving traffic signal lamp of a kind of directly driven by AC, it is not necessary to filtered electrical
Hold, on the premise of meeting traffic lights luminosity, improve efficiency and power factor, reduce caloric value and the volume of device, and
And LED luminosity can be automatically adjusted according to environmental light brightness, it is easy to manufacture.
The present invention is achieved in that a kind of LED energy-saving traffic signal lamp with an automatic light meter exchanging and directly driving, including: input
It is mono-that protected location [1], rectification unit [2], exchange directly drive controller [3], light sensor [4], dimming control unit [5], LED
Unit [6]；Wherein:
Input protected location ［ 1 ］: provide overcurrent or short-circuit protection for LED energy-saving traffic signal lamp and absorb surge electricity
Pressure, constitutes electrical connection with rectification unit ［ 2 ］；
Rectification unit ［ 2 ］: AC-input voltage is carried out all wave rectification, directly drives controller for exchange and LED provides unidirectional
Pulsating volage, directly drives controller [3] and constitutes electrical connection with rectification unit [2] and exchanging；
Controller ［ 3 ］ is directly driven in exchange: according to the size of the instantaneous value of the pulsating volage after rectification, drive different branch
LED string is luminous, constitutes electrical connection with rectification unit [2], dimming control unit [5] and LED unit [6]；
Light sensor [4]: be used for experiencing ambient light illumination, constitutes electrical connection with dimming control unit [5]；
Dimming control unit [5]: according to the signal of light sensor [4], carries out voltage transformation, produces suitable voltage letter
Number it is supplied to exchange and directly drives controller ［ 3 ］, directly driven controller ［ 3 ］ control the brightness flop of LED unit [6] by exchanging, and exchange
Directly drive controller ［ 3 ］ and constitute electrical connection；
LED unit [6]: be made up of some LED, carries out being grouped control, often group LED luminous power to LED
Size by exchange directly drive controller ［ 3 ］ control, with exchange directly drive controller ［ 3 ］ constitute be electrically connected.
Described LED unit is made up of m group LED, and m is positive integer, and often group LED contains the n bar branch road of parallel connection,
N is positive integer, and every branch road has k LED light emitting diode to be composed in series LED string, and k is positive integer, and often group LED is straight by exchanging
Drive controller ［ 3 ］ by the size of input voltage instantaneous value and dimming control signal driven for emitting lights in the way of PWM.
The present invention is to use said units unit construction to form according to above-mentioned design, and its operation principle is: the exchange of input
Voltage carries out all wave rectification after input protected location, and the pulsating volage after rectification directly drives controller to exchange and powers, by exchanging
Directly drive controller and accurately control the electric current of each LED string, dimming control unit according to the change of the signal of light sensor to friendship
Stream directly drives the controller output control voltage with ambient light illumination change, directly drives controller by exchange and realizes the light modulation of LED.
Advantages of the present invention and effect:
(1) use exchange directly to drive controller, it is not necessary to jumbo filter capacitor, and outer member is few, thus low cost,
Reliability is high.
(2) exchange utilizing integrated circuit is directly driven controller and is accurately controlled the electric current of each lamp string, allows total current close to just
String waveform, can improve power factor and efficiency, and caloric value is little, and performance is good.
(3) there is good performance with an automatic light meter, the most energy-conservation.
Accompanying drawing explanation
The present invention is further described with embodiment below in conjunction with the accompanying drawings.
Fig. 1 is the circuit block diagram of the present invention.
Fig. 2 is the circuit theory diagrams of embodiment.
Detailed description of the invention
In order to make the purpose of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, right
The present invention is described in further detail, and specific embodiment described herein, only in order to explain the present invention, is not used to limit
Determine the present invention.
Refer to Fig. 1, a kind of exchange the LED energy-saving traffic signal lamp with an automatic light meter directly driven, including input protected location
[1], controller [3], light sensor [4], dimming control unit [5], LED unit [6] are directly driven in rectification unit [2], exchange.
Wherein input protected location ［ 1 ］ provide overcurrent or short-circuit protection for LED energy-saving traffic signal lamp and absorb surge voltage, with whole
Stream unit ［ 2 ］ constitutes electrical connection；AC-input voltage is carried out all wave rectification by rectification unit ［ 2 ］, directly drives controller for exchange
And LED provides unidirectional pulsating volage, directly drive controller [3] with rectification unit [2] and exchange and constitute and be electrically connected；Control is directly driven in exchange
Device processed ［ 3 ］ is according to the size of the instantaneous value of the pulsating volage after rectification, and the LED string driving different branch is luminous, with rectification list
Unit [2], dimming control unit [5] and LED unit [6] constitute electrical connection；Light sensor [4] is used for experiencing ambient lighting
Degree, constitutes electrical connection with dimming control unit [5]；Dimming control unit [5], according to the signal of light sensor [4], is carried out
Voltage transformation, produces suitable voltage signal and is supplied to exchange and directly drives controller ［ 3 ］, is directly driven controller ［ 3 ］ control LED by exchanging
The brightness flop of unit [6], directly drives controller ［ 3 ］ composition electrical connection with exchanging；LED unit [6] is by m group LED
Constituting, m is positive integer, and often group LED contains the n bar branch road of parallel connection, and n is positive integer, and every branch road has k LED light emitting diode
Being composed in series LED string, k is positive integer, often group LED by exchange directly drive controller ［ 3 ］ by the size of input voltage instantaneous value and
Dimming control signal is driven for emitting lights in the way of PWM, that is the size of luminous power is directly driven controller ［ 3 ］ by exchange and controlled, with
Exchange is directly driven controller ［ 3 ］ and is constituted electrical connection.
Please referring further to Fig. 2, input protected location is made up of electric fuse F1 and varistor RV1；Rectification unit is by whole
Stream bridge BG1 serves as；Directly to drive controller by integrated circuit U1(model be FL77905 in exchange), electric capacity C1 and resistance R1, R2 form；
Light sensor is served as by photoconductive resistance R3；Dimming control unit is LM258 by integrated circuit U2(model), resistance R3～R7,
Adjustable resistance RW1, electric capacity C2, Zener diode D1 form；LED unit is made up of 3 groups of LED, and often group LED contains also
The n bar branch road of connection, n is positive integer, in the present embodiment, the circuitry number n=5 of the 1st group of LED, the circuitry number n=4 of the 2nd group of LED,
The circuitry number n=4 of the 3rd group of LED, every branch road has k LED light emitting diode to be composed in series LED string, and k is positive integer.1st
Group LED is made up of LED string LED11～LED15, and the 2nd group of LED is made up of LED string LED21～LED24, the 3rd group of LED by
LED string LED31～LED34 forms.
The luminous power often organizing LED is determined by the electric current of this group each LED string, and its size is directly driven controller by exchange
U1 controls, and the resistance R2 external by the CS pin of U1 sets the maximum current value allowed.
The anode of the 1st group of LED each lamp string (LED11～LED15) is connected in parallel, with the upper end (positive pole) of rectifier bridge BG1
It is connected；The negative electrode of the 1st group of LED each lamp string is connected in parallel, and exchanges the LED1 pin directly driving controller U1 and the 2nd group of LED is each
The anode of lamp string is connected.
The anode of the 2nd group of LED each lamp string (LED21～LED24) is connected in parallel, and exchanges the LED1 directly driving controller U1
The negative electrode of pin and the 1st group of LED each lamp string is connected；The negative electrode of the 2nd group of LED each lamp string is connected in parallel, and directly drives control with exchanging
The anode of the LED2 pin of device U1 and the 3rd group of LED each lamp string is connected.
The anode of the 3rd group of LED each lamp string (LED31～LED34) is connected in parallel, and exchanges the LED2 directly driving controller U1
The negative electrode of pin and the 2nd group of LED each lamp string is connected；The negative electrode of the 3rd group of LED each lamp string is connected in parallel, and directly drives control with exchanging
The LED3 pin of device U1 is connected.
Exchange is directly driven the VIN pin of controller U1 and is concatenated resistance R1 and is connected to the upper end (positive pole) of rectifier bridge BG1, U1's
GND pin links the lower end (negative pole) of rectifier bridge BG1, and the CS pin of U1 is connected to VDD pin and the GND of GND, U1 through resistance R2
Between connect electric capacity C1.
After photoconductive resistance R3 is in parallel with resistance R4, one end is connected to VDD, and what the other end was connected to amplifier V2A the 3rd draws
Foot, resistance R5 is in parallel with Zener diode D1 after connecting with adjustable resistance RW1, and one end is connected with the 3rd pin of amplifier V2A,
The other end is connected with GND；Resistance R7 is connected between the 2nd pin and the GND of amplifier V2A；After resistance R6 is in parallel with electric capacity C2,
It is connected between the 2nd pin and the 1st pin of amplifier V2A；8th pin of amplifier V2A meets VDD, and the 4th pin meets GND；Put
1st pin of big device V2A is connected to exchange the DIM pin directly driving controller U1, controls the brightness of LED, when daylight environment light
Qiang Shi, the resistance of photoconductive resistance R3 diminishes, and the current potential (relative to GND) of the 3rd pin of amplifier V2A increases, and the 1st of V2A is drawn
Foot output voltage increases, and U1 drives the electric current of LED to increase, and LED luminance strengthens；When night, ambient light was weak, photoconductive resistance R3
Resistance become big, the current potential (relative to GND) of the 3rd pin of amplifier V2A reduces, and the 1st pin output voltage of V2A reduces,
U1 drives the electric current of LED to reduce, and LED luminance weakens, such LED dimming function, has both improve the luminescence under high light on daytime
Brightness, turn avoid and send the most dazzling the brightest dazzle at night, and also energy-conservation electric energy.The effect of Zener diode D1 is
Limit the voltage of U2A the 3rd pin, thus prevent U2A the 1st foot output voltage from exceeding exchange and directly drive permitting of controller U1 the 11st pin
Permitted value.
Claims (2)
1. one kind exchanges the LED energy-saving traffic signal lamp with an automatic light meter directly driven, it is characterised in that including: input protected location
[1], controller [3], light sensor [4], dimming control unit [5], LED unit [6] are directly driven in rectification unit [2], exchange；Its
In:
Input protected location ［ 1 ］: provide overcurrent or short-circuit protection for LED energy-saving traffic signal lamp and absorb surge voltage, with
Rectification unit ［ 2 ］ constitutes electrical connection；
Rectification unit ［ 2 ］: AC-input voltage is carried out all wave rectification, directly drives controller for exchange and LED provides unidirectional pulsation
Voltage, directly drives controller [3] and constitutes electrical connection with rectification unit [2] and exchanging；
Controller ［ 3 ］ is directly driven in exchange: according to the size of the instantaneous value of the pulsating volage after rectification, drive the LED of different branch
String luminescence, constitutes electrical connection with rectification unit [2], dimming control unit [5] and LED unit [6]；
Light sensor [4]: be used for experiencing ambient light illumination, constitutes electrical connection with dimming control unit [5]；
Dimming control unit [5]: according to the signal of light sensor [4], carries out voltage transformation, produces suitable voltage signal and carries
Controller ［ 3 ］ is directly driven in supply exchange, by exchanging the brightness flop directly driving controller ［ 3 ］ control LED unit [6], directly drives with exchanging
Controller ［ 3 ］ constitutes electrical connection；
LED unit [6]: be made up of some LED, carries out being grouped control to LED, and often group LED luminous power is big
Little by exchange directly drive controller ［ 3 ］ control, with exchange directly drive controller ［ 3 ］ constitute be electrically connected.
The most according to claim 1 a kind of exchange the LED energy-saving traffic signal lamp with an automatic light meter directly driven, it is characterised in that
Described LED unit is made up of m group LED, and m is positive integer, and often group LED contains the n bar branch road of parallel connection, and n is the most whole
Number, every branch road has k LED light emitting diode to be composed in series LED string, and k is positive integer, and often group LED directly drives control by exchanging
Size and dimming control signal driven for emitting lights in the way of PWM of input voltage instantaneous value pressed by device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620551792.6U CN205666994U (en) | 2016-06-10 | 2016-06-10 | Exchange energy -conserving traffic signal lamp of LED with an automatic light meter who directly drives |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620551792.6U CN205666994U (en) | 2016-06-10 | 2016-06-10 | Exchange energy -conserving traffic signal lamp of LED with an automatic light meter who directly drives |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205666994U true CN205666994U (en) | 2016-10-26 |
Family
ID=57156709
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620551792.6U Active CN205666994U (en) | 2016-06-10 | 2016-06-10 | Exchange energy -conserving traffic signal lamp of LED with an automatic light meter who directly drives |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205666994U (en) |
-
2016
- 2016-06-10 CN CN201620551792.6U patent/CN205666994U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170620 Address after: 211526 Liuhe, Jiangsu Province, Ma On Shan Ping Patentee after: Jiangsu Pingshan traffic facilities Co., Ltd. Address before: 629 No. 211188 Jiangsu city of Nanjing province Jiangning Science Park Avenue. Patentee before: Nanjing Communications Institute of Technology |