CN208285591U - Vehicular turn lamp drive circuit - Google Patents
Vehicular turn lamp drive circuit Download PDFInfo
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- CN208285591U CN208285591U CN201820551236.8U CN201820551236U CN208285591U CN 208285591 U CN208285591 U CN 208285591U CN 201820551236 U CN201820551236 U CN 201820551236U CN 208285591 U CN208285591 U CN 208285591U
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- led light
- resistance
- diode
- cathode
- turn signal
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Abstract
The utility model discloses a kind of Vehicular turn lamp drive circuits, this driving circuit provides working power by vehicle power supply, control unit lights flashing by what triode and the second diode and third diode controlled LED light, 3rd resistor and the 4th resistance are the biasing resistor of triode, bi-directional voltage stabilizing diode, capacitor and first resistor parallel connection constitute pressure-stabilizing constant flow unit, second resistance is divider resistance, to provide LED light constant driving current, four LED light pass through the 5th resistance and the 6th resistance eutral grounding after connecting two-by-two respectively.This driving circuit overcomes the defect of conventional halogen turn signal, solves the problems, such as that heat is big in turn signal use process, power consumption is big, and realizes energy conservation and environmental protection, improves the service life of turn signal, while keeping the moulding of vehicle turn signal more beautiful.
Description
Technical field
The utility model relates to a kind of Vehicular turn lamp drive circuits.
Background technique
Vehicle turn signal refers in Ackermann steer angle, by opening the flashing indicator light of respective direction, come warn Chinese herbaceous peony or
Pedestrian or vehicle after vehicle, prompt the driving direction of this vehicle, and when use is made uninterrupted with side steering indicating light installed stroboscopic by control unit
Work.Currently used vehicle turn signal lamp has halogen lamp and LED light etc..Halogen lamp technology maturation, price is low, and many vehicles are all
It using, but there are also insufficient places to have mercury if any radiation, is being easily broken, use process calorific value and power consumption are big,
And transport and installation are inconvenient, replacement trouble, service life is generally at 8000 hours or so.And LED lamp have it is pollution-free, without spoke
Penetrate, long service life the characteristics of, the theoretical service life at 50,000 hours or more, has had many vehicles to repack turn signal into LED now
Lamp.But since LED light and driving circuit price are higher, there is larger impact to universal use.
Summary of the invention
The technical problem to be solved by the utility model is to provide a kind of Vehicular turn lamp drive circuit, this driving circuits gram
The defect for taking conventional halogen turn signal solves the problems, such as that heat is big in turn signal use process, power consumption is big, and realizes energy-saving ring
It protects, improves the service life of turn signal, while keeping the moulding of vehicle turn signal more beautiful.
In order to solve the above technical problems, the utility model Vehicular turn lamp drive circuit includes that vehicle power supply and control are single
Member further includes bi-directional voltage stabilizing diode, first diode, the second diode, third diode, capacitor, the first LED light, second
LED light, third LED light, the 4th LED light, triode and the first to the 7th resistance, the first diode anode connect the vehicle
Positive pole is carried, both ends are separately connected the first diode after the bi-directional voltage stabilizing diode, capacitor and first resistor are in parallel
Both ends are separately connected the first diode cathode and triode after cathode and ground connection, the second resistance and 3rd resistor series connection
Base stage, the transistor base is through the 4th resistance eutral grounding, and the transistor emitter ground connection, collector are through the 7th electricity
Resistance connection described control unit output end, described in the first LED light anode is connect after the series connection of first LED light and the second LED light
First diode cathode, the second LED light cathode connect described 5th resistance one end, and the 5th resistance other end ground connection is described
Third LED light anode connect the first diode cathode after third LED light is connected with the 4th LED light, the 4th LED light cathode connects
Described 6th resistance one end, the 6th resistance other end ground connection are connect, second diode is connected with third diode cathode
Between the second resistance and 3rd resistor, the second diode cathode connection the second LED light cathode, the described 3rd 2
Pole pipe cathode connects the 4th LED light cathode.
Further, the 5th resistance and the 6th resistance respectively include seven Chip-Rs in parallel.
Further, first LED light, the second LED light, third LED light and the 4th LED light are yellow light LED lamps.
Since the utility model Vehicular turn lamp drive circuit uses above-mentioned technical proposal, i.e., this driving circuit is by vehicle-mounted
Power supply provides working power, and control unit lights sudden strain of a muscle by what triode and the second diode and third diode controlled LED light
Bright, 3rd resistor and the 4th resistance are the biasing resistor of triode, and bi-directional voltage stabilizing diode, capacitor and first resistor parallel connection are constituted
Pressure-stabilizing constant flow unit, second resistance are divider resistance, to provide LED light constant driving current, after four LED light are connected two-by-two
Pass through the 5th resistance and the 6th resistance eutral grounding respectively.This driving circuit overcomes the defect of conventional halogen turn signal, solves turn signal
The problem that heat is big in use process, power consumption is big, and realize energy conservation and environmental protection, the service life of turn signal is improved, while making vehicle
The moulding of turn signal is more beautiful.
Detailed description of the invention
The utility model is described in further detail with embodiment with reference to the accompanying drawing:
Fig. 1 is the utility model vehicle turn signal drive circuit schematic diagram.
Specific embodiment
Embodiment is as shown in Figure 1, the utility model Vehicular turn lamp drive circuit includes vehicle power supply VCC and control unit
FB further includes bi-directional voltage stabilizing diode S, first diode D1, the second diode D2, third diode D3, capacitor C, the first LED
Lamp LED1, the second LED light LED2, third LED light LED3, the 4th LED light LED4, triode Q and first to the 7th resistance R1,
R2, R3, R4, R5, R6, R7, the first diode D1 anode connect the vehicle power supply VCC anode, the bi-directional voltage stabilizing two
Both ends are separately connected the first diode D1 cathode and ground connection after pole pipe S, capacitor C and first resistor R1 are in parallel, and described second
Both ends are separately connected the first diode D1 cathode and triode Q base stage after resistance R2 and 3rd resistor R3 series connection, and described three
Pole pipe Q base stage is grounded through the 4th resistance R4, and the triode Q emitter ground connection, collector connect through the 7th resistance R7
Described control unit FB output end is connect, the first LED light LED1 is being just after the first LED light LED1 connects with the second LED light LED2
Pole connects the first diode D1 cathode, the second LED light LED2 cathode connects the one end the 5th resistance R5, the 5th electricity
R5 other end ground connection is hindered, third LED light LED3 anode connect institute after the third LED light LED3 connects with the 4th LED light LED4
First diode D1 cathode, the 4th LED light LED4 cathode connection one end the 6th resistance R6 are stated, the 6th resistance R6 is another
End ground connection, the second diode D2 and third diode D3 anode connect between the second resistance R2 and 3rd resistor R3,
The second diode D2 cathode connects the second LED light LED2 cathode, the third diode D3 cathode connection described the
Four LED light LED4 cathode.
Further, the 5th resistance R5 and the 6th resistance R6 respectively includes seven Chip-Rs in parallel.Seven resistance
And connected metering function, resistance heating is solved the problems, such as first, heat can be made to disperse using seven resistance, local temperature will not
Too high, the heat of entire mould group is relatively uniform, avoids the too high caused failure of local temperature；Next avoids a resistance failure from making
At entire lamp fail the problem of, seven resistance simultaneously connect together, when it is therein all the way or two-way even 6 tunnels resistance below
When failure, LED light can work, and avoid the problem that lamps and lanterns do not work, it is ensured that traffic safety.
Further, the first LED light LED1, the second LED light LED2, third LED light LED3 and the 4th LED light LED4 are
Yellow light LED lamp.
In this driving circuit, vehicle power supply electric current is through first diode D1, bi-directional voltage stabilizing diode S, capacitor C, the first electricity
LED particle is flowed through after resistance R1, LED light is made to shine, the 5th resistance R5 and the 6th resistance R6 constitute two-way current-limiting circuit, reach respectively
To current limliting purpose, guarantee LED light normal luminous, while LED light caused by avoiding electric current excessive fails, second resistance R2, third
Resistance R3, the 4th resistance R4, the 7th resistance R7, triode Q and the second diode D2 and third diode D3 constitute LED light
Open detection circuit, when LED1~LED4 open circuit when, pass through control unit FB issue feedback signal, notify vehicle control mould
Block turns to lamp failure.
This driving circuit constitutes DC-DC constant-current circuit using conventional electrical element, changes the knot of conventional steering halogen lamp
Structure carries out pressure-stabilizing constant flow to vehicle power supply using LED light source, and by bi-directional voltage stabilizing diode, capacitor and first resistor, by controlling
Unit and triode processed, the second diode and third diode control LED light light flashing, this driving circuit works normally electric
Pressure is 13.5V, and the driving current of 9~26V of operating voltage range, LED light group maintain 295mA always, so that LED light group exists
Brightness remains unchanged when 9~26V.
Claims (3)
1. a kind of Vehicular turn lamp drive circuit, including vehicle power supply and control unit, it is characterised in that: further include bi-directional voltage stabilizing
Diode, first diode, the second diode, third diode, capacitor, the first LED light, the second LED light, third LED light,
To the 7th resistance, the first diode anode connects the vehicle power supply anode, described double for four LED light, triode and first
To zener diode, capacitor and first resistor it is in parallel after both ends be separately connected the first diode cathode and ground connection, described the
Both ends are separately connected the first diode cathode and transistor base, the triode base after two resistance and 3rd resistor series connection
Pole connects the control list through the 7th resistance through the 4th resistance eutral grounding, the transistor emitter ground connection, collector
First output end, the first LED light anode connect the first diode cathode, the after first LED light and the second LED light are connected
Two LED light cathode connect described 5th resistance one end, the 5th resistance other end ground connection, the third LED light and the 4th LED
Third LED light anode connects the first diode cathode after lamp string connection, the 4th LED light cathode connects the 6th resistance one
End, the 6th resistance other end ground connection, second diode and third diode cathode connect the second resistance and the
Between three resistance, second diode cathode connects the second LED light cathode, described in the third diode cathode connection
4th LED light cathode.
2. Vehicular turn lamp drive circuit according to claim 1, it is characterised in that: the 5th resistance and the 6th resistance
Respectively include seven Chip-Rs in parallel.
3. Vehicular turn lamp drive circuit according to claim 1 or 2, it is characterised in that: first LED light, second
LED light, third LED light and the 4th LED light are yellow light LED lamps.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820551236.8U CN208285591U (en) | 2018-04-18 | 2018-04-18 | Vehicular turn lamp drive circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820551236.8U CN208285591U (en) | 2018-04-18 | 2018-04-18 | Vehicular turn lamp drive circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208285591U true CN208285591U (en) | 2018-12-25 |
Family
ID=64751445
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820551236.8U Active CN208285591U (en) | 2018-04-18 | 2018-04-18 | Vehicular turn lamp drive circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208285591U (en) |
-
2018
- 2018-04-18 CN CN201820551236.8U patent/CN208285591U/en active Active
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