CN106888523A - One kind exchange is straight to drive LED light source module system - Google Patents
One kind exchange is straight to drive LED light source module system Download PDFInfo
- Publication number
- CN106888523A CN106888523A CN201710236974.3A CN201710236974A CN106888523A CN 106888523 A CN106888523 A CN 106888523A CN 201710236974 A CN201710236974 A CN 201710236974A CN 106888523 A CN106888523 A CN 106888523A
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- China
- Prior art keywords
- resistance
- light source
- led light
- overpressure protection
- circuit
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Classifications
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/50—Circuit arrangements for operating light-emitting diodes [LED] responsive to malfunctions or undesirable behaviour of LEDs; responsive to LED life; Protective circuits
-
- 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]
Abstract
The invention provides the straight drive LED light source module system of one kind exchange, including prime overpressure protection circuit, rectifier bridge module, rear class overpressure protection circuit, LED drive circuit and LED light source;The input of prime overpressure protection circuit is connected with electric main;The output end of prime overpressure protection circuit is connected with the rectification input of rectifier bridge module;LED light source is made up of each LED being sequentially connected in series;The rectification output end of rectifier bridge module is by being connected to the signal end of LED drive circuit and the positive pole of LED light source after rear class overpressure protection circuit;The output end of LED drive circuit is connected with the negative pole of LED light source;The equal integrated installation of foregoing circuit is on aluminium base.The exchange is directly driven LED light source module system and light source and power unit is integrated on aluminium base, whole lamp cost can be effectively controlled, and makes light fixture more flexible in structure design, shorten the manufacturing cycle, and can greatly improve the service life of light fixture without the electrochemical capacitor that the life-span is shorter in circuit.
Description
Technical field
The present invention relates to a kind of LED light source module system, especially a kind of exchange is straight drives LED light source module system.
Background technology
Second half year national standard in 2016《Road and tunnel illumination LED and module interface specification》By the pact of standard
Beam is limited and unified for the product of each family, final to realize stronger interchangeability.Therefore LED light source module is illuminated out of doors
The advantage in field becomes apparent.LED roads lights are typically made up of luminous component, driving power supply, the part of lamp casing three.Wherein
The cost of driving power supply part accounts for 20% or so of whole light fixture cost.Therefore, power supply is combined with luminous component, can be had
The cost of the control light fixture of effect, makes finished product have the stronger market competitiveness.
What the supporting power supplys of LED conventional on the market were typically used at present is switching mode constant current drive mode.But switching mode
The electronic component that constant current drive mode is used is more, and contains electrochemical capacitor in circuit, and the life-span of electrochemical capacitor is shorter, direct shadow
The life-span of the whole machine of sound;Switching mode constant current drive mode is such as wanted to obtain high power factor, need to increase power factor correction circuit, increases
The cost of product;The conversion of power supply, line are carried out in switching mode constant current drive mode circuit using non-linear elements such as inductance, electric capacity
Road electromagnetic disturbance and spacing electromagnetic radiation are larger.
The content of the invention
The technical problem to be solved in the present invention is:The electronic component that existing switching mode constant current drive mode is used is more,
And contain electrochemical capacitor in circuit, and the life-span of electrochemical capacitor is shorter, directly affects the life-span of whole machine, and in circuit using inductance,
The non-linear elements such as electric capacity carry out the conversion of power supply, and circuit electromagnetic disturbance and spacing electromagnetic radiation are larger.
In order to solve the above-mentioned technical problem, the invention provides the straight drive LED light source module system of one kind exchange, including prime
Overpressure protection circuit, rectifier bridge module, rear class overpressure protection circuit, LED drive circuit and LED light source;Prime overpressure protection
The input of circuit is used to be connected with electric main;The output end of prime overpressure protection circuit is input into the rectification of rectifier bridge module
End is connected;LED light source is made up of each LED being sequentially connected in series;The rectification output end of rectifier bridge module is by rear class overpressure protection
The signal end of LED drive circuit and the positive pole of LED light source are connected to after circuit;The output end and LED light source of LED drive circuit
Negative pole be connected;Prime overpressure protection circuit, rectifier bridge module, rear class overpressure protection circuit, LED drive circuit and LED light
The equal integrated installation in source is on aluminium base.
It is integrated on aluminium base using by light source and power unit, can effectively controls whole lamp cost, and make light fixture in knot
In structure design more flexibly, the manufacturing cycle is shortened;Without the electrochemical capacitor that the life-span is shorter in circuit, making for light fixture can be greatly improved
Use the life-span;High power factor is achieved with without power factor correction circuit;Without using non-linear elements such as inductance, electromagnetism is disturbed
Disturb smaller, can be tested by electromagnetic compatibility safety completely;There is ground connection ground wire in aluminum-based circuit board, it is ensured that the safety of people.
Used as further limits scheme of the invention, prime overpressure protection circuit includes resettable fuse F1 and pressure-sensitive electricity
Resistance RV1;One end of resettable fuse F1 is connected to the live wire of electric main, and the other end is connected to the first friendship of rectifier bridge module
Stream input;Second ac input end of rectifier bridge module is connected to the center line of electric main;The two ends difference of piezo-resistance RV1
It is connected on first ac input end and the second ac input end of rectifier bridge module.When input terminal voltage is too high, pressure-sensitive electricity
Resistance RV1 absorbs rapidly, and resettable fuse F1 disconnects, and when voltage recovers, resettable fuse F1 recovers conducting.
Used as further limits scheme of the invention, rear class overpressure protection circuit includes resistance R1, resistance R2 and pressure-sensitive
Resistance RV2;The positive pole rectification output end of rectifier bridge module and the letter of LED drive circuit are serially connected in after resistance R1 and resistance R2 parallel connections
Number end between;One end of piezo-resistance RV2 connects the negative pole rectification output end of rectifier bridge module, the other end and LED drive circuit
Signal end be connected;The negative pole rectification output end ground connection of rectifier bridge module.Resistance R1, resistance R 2, piezo-resistance RV2 are in rectification
The absorption to instantaneous pressure is played in bridge rear end, plays the protective effect to late-class circuit.
Used as further limits scheme of the invention, LED drive circuit includes that the first driver element circuit, second drive list
First circuit and the 3rd driver element circuit;First driver element circuit include IC driving chips U1, resistance R3, resistance R4 and
Electric capacity C1;Second driver element circuit includes IC driving chips U2, resistance R5, resistance R6 and electric capacity C2;3rd driver element
Circuit includes IC driving chips U3, resistance R7, resistance R8 and electric capacity C3;LED light source by LED1, LED2, LED3, LED4,
LED5, LED6, LED7, LED8, LED9, LED10, LED11, LED12, LED13 and LED14 are followed in series to form;IC drives
The four tunnel output end correspondences of the four tunnel output ends of chip U1, the four tunnel output ends of IC driving chips U2 and IC driving chips U3 are mutual
Connect, and first via output end is connected to the negative pole of LED14, the second tunnel output end is connected to the negative pole of LED13, the 3rd tunnel output end
The negative pole of LED11 is connected to, the 4th tunnel output end is connected to the negative pole of LED7;The positive pole of LED14 is connected to rear class overpressure protection
Circuit;The current controling end of IC driving chip U1, IC driving chip U2 and IC driving chips U3 passes through resistance R3, electricity respectively
Resistance R5 and resistance R7 ground connection;The power end of IC driving chip U1, IC driving chip U2 and IC driving chips U3 passes through respectively
Electric capacity C1, electric capacity C2 and electric capacity C3 are grounded;The voltage of IC driving chip U1, IC driving chip U2 and IC driving chips U3
Input is connected to rear class after resistance R4, resistance R6 and resistance R8 merge as the signal end of LED drive circuit respectively
Overpressure protection circuit.
The beneficial effects of the present invention are:(1)Light source and power unit are integrated, can effectively control whole lamp into
This, and make light fixture more flexible in structure design, shorten the manufacturing cycle;(2)LED light source module is free of life-span shorter electrolysis
Electric capacity, can greatly improve the service life of light fixture;(3)High power factor is achieved with without power factor correction circuit;(4)
, not using non-linear elements such as inductance, electromagnetic disturbance is smaller, can be tested by electromagnetic compatibility safety completely for LED light source module;
(5)There is ground connection ground wire, it is ensured that the safety of people on LED light source module wiring board.
Brief description of the drawings
Fig. 1 is overall structure diagram of the invention;
Fig. 2 is circuit structure schematic diagram of the invention.
Specific embodiment
The invention will be further described below in conjunction with the accompanying drawings.
As illustrated in fig. 1 and 2, exchange disclosed by the invention is straight drives LED light source module system, including prime overpressure protection electricity
Road, rectifier bridge module, rear class overpressure protection circuit, LED drive circuit and LED light source.
Wherein, the input of prime overpressure protection circuit is used to be connected with electric main;Prime overpressure protection circuit it is defeated
Go out end to be connected with the rectification input of rectifier bridge module;LED light source is made up of each LED being sequentially connected in series;Rectifier bridge module
Rectification output end is by being connected to the signal end of LED drive circuit and the positive pole of LED light source after rear class overpressure protection circuit;
The output end of LED drive circuit is connected with the negative pole of LED light source;Prime overpressure protection circuit, rectifier bridge module, rear class superpressure are protected
Protection circuit, LED drive circuit and the equal integrated installation of LED light source are on aluminium base.
Prime overpressure protection circuit includes resettable fuse F1 and piezo-resistance RV1;One end of resettable fuse F1
The live wire of electric main is connected to, the other end is connected to the first ac input end of rectifier bridge module;The second of rectifier bridge module
Ac input end is connected to the center line of electric main;The two ends of piezo-resistance RV1 are connected to the first friendship of rectifier bridge module
On stream input and the second ac input end.
Rear class overpressure protection circuit includes resistance R1, resistance R2 and piezo-resistance RV2;After resistance R1 and resistance R2 parallel connections
It is serially connected between the positive pole rectification output end of rectifier bridge module and the signal end of LED drive circuit;One end of piezo-resistance RV2 connects
The negative pole rectification output end of rectifier bridge module is connect, the other end is connected with the signal end of LED drive circuit;The negative pole of rectifier bridge module
Rectification output end is grounded.
LED drive circuit includes the first driver element circuit, the second driver element circuit and the 3rd driver element circuit;
First driver element circuit includes IC driving chips U1, resistance R3, resistance R4 and electric capacity C1;Second driver element circuit includes
IC driving chips U2, resistance R5, resistance R6 and electric capacity C2;3rd driver element circuit include IC driving chips U3, resistance R7,
Resistance R8 and electric capacity C3;LED light source by LED1, LED2, LED3, LED4, LED5, LED6, LED7, LED8, LED9, LED10,
LED11, LED12, LED13 and LED14 are followed in series to form;The four tunnel output ends of IC driving chips U1, IC driving chips U2
Four tunnel output ends and the four tunnel output ends correspondences of IC driving chips U3 interconnect, and first via output end is connected to LED14's
Negative pole, the second tunnel output end is connected to the negative pole of LED13, and the 3rd tunnel output end is connected to the negative pole of LED11, the 4th tunnel output end
It is connected to the negative pole of LED7;The positive pole of LED14 is connected to rear class overpressure protection circuit;IC driving chip U1, IC driving chips U2
And the current controling end of IC driving chips U3 is grounded by resistance R3, resistance R5 and resistance R7 respectively;IC driving chips U1,
The power end of IC driving chip U2 and IC driving chips U3 is grounded by electric capacity C1, electric capacity C2 and electric capacity C3 respectively;IC drives
The voltage input end of dynamic chip U1, IC driving chip U2 and IC driving chip U3 passes through resistance R4, resistance R6 and electricity respectively
Resistance R8 is connected to rear class overpressure protection circuit after merging as the signal end of LED drive circuit.
Be integrated on same aluminium base for LED drive circuit and LED light source by the present invention.In Fig. 2, prime overpressure protection electricity
Road and rear class overpressure protection circuit protection circuit are by resettable fuse F1, piezo-resistance RV1, resistance R1, resistance R2, pressure-sensitive electricity
Resistance RV2 compositions, when input terminal voltage is too high, piezo-resistance RV1 absorbs rapidly, and resettable fuse F1 disconnects, when voltage is extensive
When multiple, resettable fuse F1 recovers conducting;Resistance R1, resistance R 2, piezo-resistance RV2 are played to moment in rectifier bridge rear end
The absorption of high pressure, plays the protective effect to late-class circuit.
In Fig. 2, rectifier bridge module D1 is connected by resettable fuse F1, piezo-resistance RV1 with electric main, for inciting somebody to action
It is pulsating direct current electricity output to LED drive circuit and LED light source that electric main carries out full-wave rectification.IC driving chips U1, IC drive
The OUT1 pin of dynamic chip U2 and IC driving chip U3 distinguish used in parallel to OUT4 pin, and are connected with LED light source, drive LED
It is luminous.Resistance R3, resistance R5, resistance R7 are used to set the output current of IC driving chips;Electric capacity C1, electric capacity C2, electric capacity C3 are
System provides more preferable anti-electromagnetic interference capability;Resistance R4, resistance R6, resistance R8 connect with the signal end of IC driving chips, are
IC module for power supply.
LED light source in LED light source module system is 14.14 are cascaded, and wherein LED1 ~ LED7 is by U1-U3
OUT1 pin drive;LED1 ~ LED11 is driven by the OUT2 pin of U1-U3;LED1 ~ LED13 is driven by the OUT3 pin of U1-U3;
LED1-LED14 is driven by the OUT4 pin of U1-U3;Driving order is driven by three IC respectively according to the change of sine wave 0 to peak value
The OUT1 pin of chip drive to OUT4 castors stream.
IC driving chips U1-U3 uses SM2315E High Power Factor linear constant current power supplys IC;RV1 and RV2 are used
MOV7D471 model piezo-resistances;Rectifier bridge module is realized using MB6S chips;Resettable fuse F1 uses F25T-020H types
Number resettable fuse.
The present invention has the advantages that:
(1)The present invention integrates the light source and power unit of light fixture, can effectively control whole lamp cost, and light fixture is existed
In structure design more flexibly, the manufacturing cycle is shortened.
(2)LED light source module of the invention is free of life-span shorter electrochemical capacitor, can greatly improve the use longevity of light fixture
Life.
(3)The present invention is achieved with high power factor without power factor correction circuit.
(4), not using non-linear elements such as inductance, electromagnetic disturbance is smaller, can lead to completely for LED light source module of the invention
Cross the test of electromagnetic compatibility safety.
(5)There is ground connection ground wire, it is ensured that the safety of people on LED light source module wiring board of the invention.
Claims (4)
1. a kind of exchange is straight drives LED light source module system, it is characterised in that:Including prime overpressure protection circuit, rectifier bridge module,
Rear class overpressure protection circuit, LED drive circuit and LED light source;The input of prime overpressure protection circuit is used for and exchanges city
It is electrically connected;The output end of prime overpressure protection circuit is connected with the rectification input of rectifier bridge module;LED light source by going here and there successively
Each LED of connection is constituted;The rectification output end of rectifier bridge module after rear class overpressure protection circuit by being connected to LED drive circuit
Signal end and LED light source positive pole;The output end of LED drive circuit is connected with the negative pole of LED light source;Prime overpressure protection
Circuit, rectifier bridge module, rear class overpressure protection circuit, LED drive circuit and the equal integrated installation of LED light source are on aluminium base.
2. exchange according to claim 1 is straight drives LED light source module system, it is characterised in that:Prime overpressure protection circuit
Including resettable fuse F1 and piezo-resistance RV1;One end of resettable fuse F1 is connected to the live wire of electric main, another
End is connected to the first ac input end of rectifier bridge module;Second ac input end of rectifier bridge module is connected to electric main
Center line;The two ends of piezo-resistance RV1 are connected on first ac input end and the second ac input end of rectifier bridge module.
3. exchange according to claim 1 is straight drives LED light source module system, it is characterised in that:Rear class overpressure protection circuit
Including resistance R1, resistance R2 and piezo-resistance RV2;The positive pole that rectifier bridge module is serially connected in after resistance R1 and resistance R2 parallel connections is whole
Between stream output end and the signal end of LED drive circuit;The negative pole rectification of one end connection rectifier bridge module of piezo-resistance RV2 is defeated
Go out end, the other end is connected with the signal end of LED drive circuit;The negative pole rectification output end ground connection of rectifier bridge module.
4. exchange according to claim 1 is straight drives LED light source module system, it is characterised in that:LED drive circuit includes the
One driver element circuit, the second driver element circuit and the 3rd driver element circuit;First driver element circuit drives including IC
Dynamic chip U1, resistance R3, resistance R4 and electric capacity C1;Second driver element circuit includes IC driving chips U2, resistance R5, resistance
R6 and electric capacity C2;3rd driver element circuit includes IC driving chips U3, resistance R7, resistance R8 and electric capacity C3;LED light source
By LED1, LED2, LED3, LED4, LED5, LED6, LED7, LED8, LED9, LED10, LED11, LED12, LED13 and
LED14 is followed in series to form;The four tunnel output ends of IC driving chips U1, the four tunnel output ends of IC driving chips U2 and IC drive
The four tunnel output end correspondences of chip U3 are interconnected, and first via output end is connected to the negative pole of LED14, and the second tunnel output end is connected to
The negative pole of LED13, the 3rd tunnel output end is connected to the negative pole of LED11, and the 4th tunnel output end is connected to the negative pole of LED7;LED14
Positive pole be connected to rear class overpressure protection circuit;The electricity of IC driving chip U1, IC driving chip U2 and IC driving chips U3
Flow control end is grounded by resistance R3, resistance R5 and resistance R7 respectively;IC driving chip U1, IC driving chips U2 and IC
The power end of driving chip U3 is grounded by electric capacity C1, electric capacity C2 and electric capacity C3 respectively;IC driving chip U1, IC driving chips
The voltage input end of U2 and IC driving chips U3 drives after resistance R4, resistance R6 and resistance R8 merge as LED respectively
The signal end of dynamic circuit is connected to rear class overpressure protection circuit.
Priority Applications (1)
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CN201710236974.3A CN106888523A (en) | 2017-04-12 | 2017-04-12 | One kind exchange is straight to drive LED light source module system |
Applications Claiming Priority (1)
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CN201710236974.3A CN106888523A (en) | 2017-04-12 | 2017-04-12 | One kind exchange is straight to drive LED light source module system |
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CN201710236974.3A Pending CN106888523A (en) | 2017-04-12 | 2017-04-12 | One kind exchange is straight to drive LED light source module system |
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2017
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Application publication date: 20170623 |