CN204010327U - A kind of driving circuit of humanoid traffic lights - Google Patents

A kind of driving circuit of humanoid traffic lights Download PDF

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Publication number
CN204010327U
CN204010327U CN201420324689.9U CN201420324689U CN204010327U CN 204010327 U CN204010327 U CN 204010327U CN 201420324689 U CN201420324689 U CN 201420324689U CN 204010327 U CN204010327 U CN 204010327U
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CN
China
Prior art keywords
light emitting
emitting diode
electric capacity
voltage
display unit
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Expired - Fee Related
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CN201420324689.9U
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Chinese (zh)
Inventor
顾肖红
潘琳
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Wuxi Chongan District Technology Innovation Service Center
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Wuxi Chongan District Technology Innovation Service Center
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Priority to CN201420324689.9U priority Critical patent/CN204010327U/en
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
    • Y02B20/40Control techniques providing energy savings, e.g. smart controller or presence detection

Abstract

The utility model discloses a kind of driving circuit of humanoid traffic lights, comprise the power supply unit, rectification unit, filtering voltage regulation unit, the display unit that connect successively, adopt the display unit circuit connected mode of this scheme, make when a LED lamp damages, can not have influence on the work of other LED lamps in series arm, the electric current that can not make other branch roads flow through excessive simultaneously, cause the excessive damage of pressure drop LED lamp, the problems such as causing traffic congestion of having avoided breaking down in traffic lights use procedure, has saved maintenance cost simultaneously.Voltage regulation unit adopts three-terminal voltage-stabilizing chip, makes the supply voltage of display unit more stable, avoids voltage instability to cause the impact to LED lamp, has extended the serviceable life of LED lamp.

Description

A kind of driving circuit of humanoid traffic lights
Technical field
The invention belongs to the technical field of traffic lights application, be specifically related to a kind of driving circuit of humanoid traffic lights.
Background technology
The light source of LED traffic lights by a plurality of LED Zu Cheng ﹐ conventional light source as Bai Chi Deng ﹑ Halogen lamp LED be all luminous by a bulb, so conventional light source is in design as long as consider a focus, and light is distributed and is relatively easy to distribute.And LED light source design time will be considered a plurality of focuses, and the installation of LED is also had to certain requirement, if the inconsistent light efficiency homogeneity that will affect light-emitting area is installed, therefore in design, will consider how to avoid the appearance of this defect, if optical design is too simple, it is mainly to lean on the visual angle of LED itself to come Bao Zheng ﹐ all stricter to the photodistributed requirement of LED itself and installation requirement so that the light of signal lamp distributes, otherwise this phenomenon will be fairly obvious.Present many producers have adopted the doublet mode of first collecting again luminous intensity distribution to the luminous intensity distribution of LED signal lamp, the light so first a plurality of LED being sent accumulates a branch of directional light, and then by luminous intensity distribution, meet the needs of all directions.Such design has just been alleviated the photodistributed inequality of LED itself and the deviation producing has been installed.
Design LED driving circuit time, we first to consider following some:
1, driving power should be used 220V ac voltage rectifier filtering Er get ﹐ and the energy that practices every conceivable frugality.
2, the luminosity impact of mains voltage variations and environmental parameter (as environment temperature) Bianization Shi ﹐ reply LED is less.
3, as LED, to damage the electric current that Shi ﹐ can not make other branch road flow through excessive, and the normal work of LED lamp is impacted.
The LED lamp that 4, can not affect same branch road as a LED damage Shi ﹐ does not work.
Therefore, the driving circuit of design LED traffic lights just seems particularly important.
Summary of the invention
Technical matters to be solved by this invention is: the driving circuit that a kind of humanoid traffic lights are provided, by changing the circuit connecting mode of display unit, solved when a LED damages, when the problem that 4 LED that cause connecting with it are not worked and a branch road have problem, other branch roads bear the excessive problem that causes damage of electric current.
The present invention is for solving the problems of the technologies described above by the following technical solutions:
A kind of driving circuit of humanoid traffic lights, comprise the power supply unit connecting successively, rectification unit, filtering voltage regulation unit, display unit, described power supply unit comprises transformer, described rectification unit comprises the rectifier bridge that first to fourth diode forms, described display unit comprises a plurality of luminous branch roads and a voltage stabilizing branch road, each luminous branch road is composed in series by four light emitting diodes and a resistance, wherein the anode of the first light emitting diode and the positive pole of circuit output end of pressure-stabilizing are connected, the anodic bonding of the negative electrode of the first light emitting diode and the second light emitting diode, the anodic bonding of the negative electrode of the second light emitting diode and the 3rd light emitting diode, the anodic bonding of the negative electrode of the 3rd light emitting diode and the 4th light emitting diode, the 4th light emitting diode is connected with one end of resistance, the other end of resistance is connected with circuit output end of pressure-stabilizing, the negative electrode of the first light emitting diode of luminous branch road interconnects, the negative electrode of the second light emitting diode of luminous branch road interconnects, the negative electrode of the 3rd light emitting diode of luminous branch road interconnects, the negative electrode of the 4th light emitting diode of luminous branch road interconnects.
Described filtering voltage regulation unit comprises the first to the 5th electric capacity, a current-limiting resistance, a switching tube, a three-terminal voltage-stabilizing chip, wherein the first electric capacity, the 4th Capacitance parallel connection are in the output terminal of rectification unit, and the positive pole of rectification circuit output end is connected with one end of described current-limiting resistance, the input end of switching tube respectively; The other end of described current-limiting resistance is connected with the control end of switching tube, the input end of three-terminal voltage-stabilizing chip respectively; The output terminal of the output terminal of described switching tube, three-terminal voltage-stabilizing chip is connected with the input end of display unit; The grounding leg of three-terminal voltage-stabilizing chip is connected with the output terminal of display unit; Described the second electric capacity, the 3rd electric capacity, the 5th Capacitance parallel connection are between the input/output terminal of display unit.
The described first to the 3rd electric capacity is polar capacitor, and the first electric capacity, the second electric capacity are polar capacitor, and capacity is 100uF, and withstand voltage is 50V; The capacity of the 3rd electric capacity is 10uF, and withstand voltage is 50V; The capacity of the 4th electric capacity, the 5th electric capacity is 1uF, and withstand voltage is 50V.
Described polar capacitor is electrochemical capacitor, and described the 4th electric capacity, the 5th electric capacity are ceramic condenser.
Described three-terminal voltage-stabilizing chip is 78L18.
Compared with prior art, the present invention has following beneficial effect:
1, adopt the display unit circuit connected mode of this scheme, make when a LED lamp damages, can not have influence on the work of other LED lamps in series arm, the problems such as causing traffic congestion of having avoided breaking down in traffic lights use procedure, has saved maintenance cost simultaneously.
2, voltage regulation unit adopts three-terminal voltage-stabilizing chip, makes the supply voltage of display unit more stable, avoids voltage instability to cause the impact to LED lamp, has extended the serviceable life of LED lamp.
3, when a LED fluorescent tube damages, can not affect the work of other LED lamps of same branch road, the electric current that can not make other branch roads flow through excessive simultaneously, causes the excessive damage of pressure drop LED lamp.
Accompanying drawing explanation
Fig. 1 is traffic light circuit figure of the present invention.
Embodiment
Below in conjunction with accompanying drawing, structure of the present invention and the course of work are described further.
As shown in Figure 1, a kind of driving circuit of humanoid traffic lights, comprise the power supply unit connecting successively, rectification unit, filtering voltage regulation unit, display unit, described power supply unit comprises transformer T1, described rectification unit comprises diode D1, D2, D3, the rectifier bridge that D4 forms, described display unit comprises a plurality of luminous branch roads and a voltage stabilizing branch road, each luminous branch road is composed in series by four light emitting diodes and a resistance, wherein the anode of the first light emitting diode and the positive pole of circuit output end of pressure-stabilizing are connected, the anodic bonding of the negative electrode of the first light emitting diode and the second light emitting diode, the anodic bonding of the negative electrode of the second light emitting diode and the 3rd light emitting diode, the anodic bonding of the negative electrode of the 3rd light emitting diode and the 4th light emitting diode, the 4th light emitting diode is connected with one end of resistance, the other end of resistance is connected with circuit output end of pressure-stabilizing, the negative electrode of the first light emitting diode of luminous branch road interconnects, the negative electrode of the second light emitting diode of luminous branch road interconnects, the negative electrode of the 3rd light emitting diode of luminous branch road interconnects, the negative electrode of the 4th light emitting diode of luminous branch road interconnects.
Described filtering voltage regulation unit comprises the first to the 5th electric capacity, a current-limiting resistance R1, switching tube Q1, a three-terminal voltage-stabilizing chip U1, wherein the first capacitor C 1, the 4th capacitor C 4 are parallel to the output terminal of rectification unit, and the positive pole of rectification circuit output end is connected with one end of described current-limiting resistance, the input end of switching tube Q1 respectively; The other end of described current-limiting resistance R1 is connected with the control end of switching tube Q1, the input end of three-terminal voltage-stabilizing chip U1 respectively; The output terminal of the output terminal of described switching tube Q1, three-terminal voltage-stabilizing chip U1 is connected with the input end of display unit; The grounding leg of three-terminal voltage-stabilizing chip U1 is connected with the output terminal of display unit; Described the second capacitor C 2, the 3rd capacitor C 3, the 5th capacitor C 5 are parallel between the input/output terminal of display unit.
The described first to the 3rd electric capacity is polar capacitor, and the first capacitor C 1, the second capacitor C 2 are polar capacitor, and capacity is 100uF, and withstand voltage is 50V; The capacity of the 3rd capacitor C 3 is 10uF, and withstand voltage is 50V; The capacity of the 4th capacitor C 4, the 5th capacitor C 5 is 1uF, and withstand voltage is 50V.
Described polar capacitor is electrochemical capacitor, and described the 4th electric capacity, the 5th electric capacity are ceramic condenser.
Described three-terminal voltage-stabilizing chip U1 is 78L18.

Claims (5)

1. the driving circuit of humanoid traffic lights, comprise the power supply unit connecting successively, rectification unit, filtering voltage regulation unit, display unit, described power supply unit comprises transformer, described rectification unit comprises the rectifier bridge that first to fourth diode forms, described display unit comprises a plurality of luminous branch roads and a voltage stabilizing branch road, each luminous branch road is composed in series by four light emitting diodes and a resistance, wherein the anode of the first light emitting diode and the positive pole of circuit output end of pressure-stabilizing are connected, the anodic bonding of the negative electrode of the first light emitting diode and the second light emitting diode, the anodic bonding of the negative electrode of the second light emitting diode and the 3rd light emitting diode, the anodic bonding of the negative electrode of the 3rd light emitting diode and the 4th light emitting diode, the 4th light emitting diode is connected with one end of resistance, the other end of resistance is connected with circuit output end of pressure-stabilizing, it is characterized in that: the negative electrode of the first light emitting diode of luminous branch road interconnects, the negative electrode of the second light emitting diode of luminous branch road interconnects, the negative electrode of the 3rd light emitting diode of luminous branch road interconnects, the negative electrode of the 4th light emitting diode of luminous branch road interconnects.
2. the driving circuit of humanoid traffic lights according to claim 1, it is characterized in that: described filtering voltage regulation unit comprises the first to the 5th electric capacity, a current-limiting resistance, a switching tube, a three-terminal voltage-stabilizing chip, wherein the first electric capacity, the 4th Capacitance parallel connection are in the output terminal of rectification unit, and the positive pole of rectification circuit output end is connected with one end of described current-limiting resistance, the input end of switching tube respectively; The other end of described current-limiting resistance is connected with the control end of switching tube, the input end of three-terminal voltage-stabilizing chip respectively; The output terminal of the output terminal of described switching tube, three-terminal voltage-stabilizing chip is connected with the input end of display unit; The grounding leg of three-terminal voltage-stabilizing chip is connected with the output terminal of display unit; Described the second electric capacity, the 3rd electric capacity, the 5th Capacitance parallel connection are between the input/output terminal of display unit.
3. the driving circuit of humanoid traffic lights according to claim 2, is characterized in that: the described first to the 3rd electric capacity is polar capacitor, and the first electric capacity, the second electric capacity are polar capacitor, and capacity is 100uF, and withstand voltage is 50V; The capacity of the 3rd electric capacity is 10uF, and withstand voltage is 50V; The capacity of the 4th electric capacity, the 5th electric capacity is 1uF, and withstand voltage is 50V.
4. the driving circuit of humanoid traffic lights according to claim 3, is characterized in that: described polar capacitor is electrochemical capacitor, and described the 4th electric capacity, the 5th electric capacity are ceramic condenser.
5. according to the driving circuit of the humanoid traffic lights described in any one in claim 1 to 4, it is characterized in that: described three-terminal voltage-stabilizing chip is 78L18.
CN201420324689.9U 2014-06-18 2014-06-18 A kind of driving circuit of humanoid traffic lights Expired - Fee Related CN204010327U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420324689.9U CN204010327U (en) 2014-06-18 2014-06-18 A kind of driving circuit of humanoid traffic lights

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420324689.9U CN204010327U (en) 2014-06-18 2014-06-18 A kind of driving circuit of humanoid traffic lights

Publications (1)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104036652A (en) * 2014-06-18 2014-09-10 无锡市崇安区科技创业服务中心 Drive circuit of humanoid traffic signal lamp

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104036652A (en) * 2014-06-18 2014-09-10 无锡市崇安区科技创业服务中心 Drive circuit of humanoid traffic signal lamp
CN104036652B (en) * 2014-06-18 2016-01-20 无锡市崇安区科技创业服务中心 A kind of driving circuit of humanoid traffic lights

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CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20141210

Termination date: 20150618

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