CN208434145U - Vehicle backing lamp drive circuit - Google Patents
Vehicle backing lamp drive circuit Download PDFInfo
- Publication number
- CN208434145U CN208434145U CN201820550967.0U CN201820550967U CN208434145U CN 208434145 U CN208434145 U CN 208434145U CN 201820550967 U CN201820550967 U CN 201820550967U CN 208434145 U CN208434145 U CN 208434145U
- Authority
- CN
- China
- Prior art keywords
- led light
- diode
- resistance
- transistor
- triode
- 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.)
- Active
Links
Landscapes
- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The utility model discloses a kind of vehicle backing lamp drive circuits, this driving circuit provides working power by the vehicle power supply and control unit concatenated, both ends connect control unit output and ground, the anode connection control unit output end of the first and second Diode series and first diode after bi-directional voltage stabilizing diode, capacitor and first resistor are in parallel；First triode and the second triode and third transistor and the 4th triode constitute two groups of constant-current sources, for providing the point light current of the first LED light group and the second LED light group.This driving circuit overcomes the defect of conventional halogen back-up lamp, solves the problems, such as that heat is big in back-up lamp use process, power consumption is big, and realizes energy conservation and environmental protection, improves the service life of back-up lamp, while keeping the moulding of vehicle backing lamp more beautiful.
Description
Technical field
The utility model relates to a kind of vehicle backing lamp drive circuits.
Background technique
Vehicle backing lamp is installed on the tail portion of vehicle, for the road surface after illuminating vehicle in reversing, and plays warning rear
The effect of vehicle and pedestrian.Currently used vehicle backing lamp has halogen lamp and LED light etc..Halogen lamp technology maturation, price is low,
Many vehicles are all using, but there are also insufficient places to have mercury if any radiation, are easily broken, use process calorific value
And power consumption is big, and transports and install inconvenience, replacement trouble, service life is generally at 8000 hours or so.And whether there is or not dirts for LED lamp
The characteristics of dye, radiationless, long service life, the theoretical service life at 50,000 hours or more, has had many vehicles to change back-up lamp now
Dress up LED light.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 vehicle backing lamp drive circuit, this driving circuits gram
The defect for taking conventional halogen back-up lamp solves the problems, such as that heat is big in back-up lamp use process, power consumption is big, and realizes energy-saving ring
It protects, improves the service life of back-up lamp, while keeping the moulding of vehicle backing lamp more beautiful.
In order to solve the above technical problems, the utility model vehicle backing lamp drive circuit includes that vehicle power supply and control are single
Member, the vehicle power supply anode connect described control unit input terminal, this driving circuit further includes bi-directional voltage stabilizing diode, electricity
Appearance, first diode, the second diode, the first triode, the second triode, third transistor, the 4th triode, the first LED
Lamp group, the second LED light group and the first to the 7th resistance；
Both ends are separately connected described control unit output end after the bi-directional voltage stabilizing diode, capacitor and first resistor are in parallel
And ground terminal, the first diode is sequentially connected in series with the second diode and the anode of first diode connects the control list
First output end；
It is negative to connect second diode for 3rd resistor one end after the 3rd resistor is connected with first LED light group
Pole, the first LED light group cathode connect second transistor collector, and the second resistance both ends are separately connected the described 2nd 2
Pole pipe cathode and first transistor collector, second transistor base connect first transistor collector, institute
It states the first transistor base and connects second transistor emitter, first transistor emitter is grounded, and the described 2nd 3
Pole pipe emitter is through the 6th resistance eutral grounding；
It is negative to connect second diode for the 4th resistance one end after 4th resistance is connected with second LED light group
Pole, the second LED light group cathode connect the 4th transistor collector, and the 5th resistance both ends are separately connected the described 2nd 2
Pole pipe cathode and the third transistor collector, the 4th transistor base connect the third transistor collector, institute
It states third transistor base stage and connects the 4th transistor emitter, the third transistor emitter is grounded, and the described 4th 3
Pole pipe emitter is through the 7th resistance eutral grounding.
Further, first LED light group and the second LED light group respectively include four LED light, four LED light two
It is connected in parallel after two series connection.
Further, the 3rd resistor and the 4th resistance respectively include eight Chip-Rs being connected in parallel.
Further, the 6th resistance and the 7th resistance respectively include two Chip-Rs being connected in parallel.
Since the utility model vehicle backing lamp drive circuit uses above-mentioned technical proposal, i.e., this driving circuit is by concatenating
Vehicle power supply and control unit working power is provided, bi-directional voltage stabilizing diode, both ends connect after capacitor and first resistor are in parallel
The anode connection control unit of control unit output and ground, the first and second Diode series and first diode is defeated
Outlet；First triode and the second triode and third transistor and the 4th triode constitute two groups of constant-current sources, for providing
The point light current of first LED light group and the second LED light group.This driving circuit overcomes the defect of conventional halogen back-up lamp, solves down
The problem that heat is big in car light use process, power consumption is big, and realize energy conservation and environmental protection, the service life of back-up lamp is improved, simultaneously
Keep the moulding of vehicle backing lamp 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 backing lamp drive circuit schematic diagram.
Specific embodiment
Embodiment is as shown in Figure 1, the utility model vehicle backing lamp drive circuit includes vehicle power supply VCC and control unit
K, the vehicle power supply VCC anode connect described control unit K input terminal, this driving circuit further include bi-directional voltage stabilizing diode S,
Capacitor C, first diode D1, the second diode D2, the first triode Q1, the second triode Q2, third transistor Q3, the four or three
Pole pipe Q4, the first LED light group D3, the second LED light group D4 and first to the 7th resistance R1, R2, R3, R4, R5, R6, R7；
Both ends are separately connected described control unit K after the bi-directional voltage stabilizing diode S, capacitor C and first resistor R1 are in parallel
Output and ground, the first diode D1 and the second diode D2 are sequentially connected in series and the anode of first diode D1 connects
Connect described control unit K output end；
The one end 3rd resistor R3 connect the two or two pole after the 3rd resistor R3 connects with the first LED light group D3
Pipe D2 cathode, the first LED light group D3 cathode connect the second triode Q2 collector, and the both ends the second resistance R2 connect respectively
Connect the second diode D2 cathode and the first triode Q1 collector, the second triode Q2 base stage connection described the
One triode Q1 collector, the first triode Q1 base stage connect the second triode Q2 emitter, the one or three pole
Pipe Q1 emitter ground connection, the second triode Q2 emitter are grounded through the 6th resistance R6；
The 4th one end resistance R4 connect the two or two pole after the 4th resistance R4 connects with the second LED light group D4
Pipe D2 cathode, the second LED light group D4 cathode connect the 4th triode Q4 collector, and the both ends the 5th resistance R5 connect respectively
Connect the second diode D2 cathode and the third transistor Q3 collector, the 4th triode Q4 base stage connection described the
Three triode Q3 collectors, the third transistor Q3 base stage connect the 4th triode Q4 emitter, the three or three pole
Pipe Q3 emitter ground connection, the 4th triode Q4 emitter are grounded through the 7th resistance R7.
Preferably, the first R7 respectively includes two Chip-Rs being connected in parallel.Two resistance and to have connected electric current anti-
The effect of feedback, solves the problems, such as resistance heating first, heat can be made to disperse using two resistance, and local temperature will not be too high,
The component temperature of constant-current circuit will not be too high, guarantees the stability of output electric current, it is whole that next avoids a resistance failure from causing
The problem of a constant-current circuit fails, when resistance failure all the way therein, LED light can work LED light group D3 and second
LED light group D4 respectively includes four LED light, and four LED light are connected in parallel after connecting two-by-two.Caused by four LED light
Luminous flux can satisfy GB15235-94(New Type of Reversing Lamp luminous intensity distribution performance) standard, four LED particles are separated, not only may be used
It to solve heat dissipation problem, while also can satisfy shape-designing, improve performance attractive in appearance.
Preferably, the 3rd resistor R3 and the 4th resistance R4 respectively include eight Chip-Rs being connected in parallel.Eight
Resistance has simultaneously connected metering function, solves the problems, such as resistance heating first, heat can be made to disperse using eight resistance, local temperature
Degree will not be too high, and the heat of entire mould group is relatively uniform, avoids the too high caused failure of local temperature, next avoids an electricity
Resistance failure cause entire lamp fail the problem of, eight resistance simultaneously connect together, when it is therein all the way or two-way even 7 tunnels with
Under resistance failure when, LED light can work, and avoid the problem that lamps and lanterns do not work, it is ensured that the safety of car backing operation.
Preferably, the 6th resistance R6 and the 7th resistance, avoid the problem that lamps and lanterns do not work.
This driving circuit is powered by vehicle power supply, and electric current passes through the two-way of protection component after control unit K control
Zener diode S, capacitor C, first resistor R1, first diode D1, the second diode D2, then by 3rd resistor R3 and
4th resistance R4, so that LED particle conducting shines, electric current flows through the second triode Q2 and the 4th triode Q4, finally passes through
6th resistance R6 and the 7th resistance R7, wherein second resistance R2, the 6th resistance R6, the first triode Q1, the second triode Q2 and
5th resistance R5, the 7th resistance R7, third transistor Q3, the 4th triode Q4 constitute two-way constant-current circuit, respectively reach and light
The constant current of LED light makes LED light normal luminous, while avoiding the problem that LED light caused by electric current is excessive fails.
This driving circuit change tradition reversing halogen lamp structure, using LED light source, and by bi-directional voltage stabilizing diode,
Capacitor and first resistor carry out pressure stabilizing to vehicle power supply, two groups of constant-current sources are constituted by four triodes, for providing the first LED light
The point light current of group and the second LED light group；This driving circuit normal working voltage be 13.5V, 9~26V of operating voltage range,
The driving current of LED light group maintains 500mA always so that LED light group brightness in 9~26V remains unchanged.
Claims (4)
1. a kind of vehicle backing lamp drive circuit, including vehicle power supply and control unit, described in the vehicle power supply anode connection
Control unit input terminal, it is characterised in that: further include bi-directional voltage stabilizing diode, capacitor, first diode, the second diode,
One triode, the second triode, third transistor, the 4th triode, the first LED light group, the second LED light group and first to the 7th
Resistance；
Both ends are separately connected described control unit output end and connect after the bi-directional voltage stabilizing diode, capacitor and first resistor are in parallel
Ground terminal, the first diode and the second diode are sequentially connected in series and the anode connection described control unit of first diode is defeated
Outlet；
3rd resistor one end connect second diode cathode, the after the 3rd resistor and first LED light group are connected
One LED light group cathode connects second transistor collector, and the second resistance both ends are separately connected second diode
Cathode and first transistor collector, second transistor base connect first transistor collector, and described the
One transistor base connects second transistor emitter, the first transistor emitter ground connection, second triode
Emitter is through the 6th resistance eutral grounding；
The 4th resistance one end connect second diode cathode, the after 4th resistance and second LED light group are connected
Two LED light group cathode connect the 4th transistor collector, and the 5th resistance both ends are separately connected second diode
Cathode and the third transistor collector, the 4th transistor base connect the third transistor collector, and described the
Three transistor bases connect the 4th transistor emitter, the third transistor emitter ground connection, the 4th triode
Emitter is through the 7th resistance eutral grounding.
2. vehicle backing lamp drive circuit according to claim 1, it is characterised in that: first LED light group and second
LED light group respectively includes four LED light, and four LED light are connected in parallel after connecting two-by-two.
3. vehicle backing lamp drive circuit according to claim 1 or 2, it is characterised in that: the 3rd resistor and the 4th
Resistance respectively includes eight Chip-Rs being connected in parallel.
4. vehicle backing lamp drive circuit according to claim 3, it is characterised in that: the 6th resistance and the 7th resistance
Respectively include two Chip-Rs being connected in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820550967.0U CN208434145U (en) | 2018-04-18 | 2018-04-18 | Vehicle backing lamp drive circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820550967.0U CN208434145U (en) | 2018-04-18 | 2018-04-18 | Vehicle backing lamp drive circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208434145U true CN208434145U (en) | 2019-01-25 |
Family
ID=65101752
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820550967.0U Active CN208434145U (en) | 2018-04-18 | 2018-04-18 | Vehicle backing lamp drive circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208434145U (en) |
-
2018
- 2018-04-18 CN CN201820550967.0U patent/CN208434145U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100562200C (en) | Solar streetlight control circuit | |
| CN204829373U (en) | LED maize lamp | |
| CN100525562C (en) | LED lamp component circuit unit and compound serial LED lamp circuit | |
| CN208434145U (en) | Vehicle backing lamp drive circuit | |
| CN209068233U (en) | Lamp section and lamp area | |
| CN209526919U (en) | Three-color LED atmosphere lamp control circuit | |
| CN203590523U (en) | Double channel complementation LED street lamp power supply | |
| CN208285592U (en) | Vehicle location lamp drive circuit | |
| CN204362403U (en) | A kind of lighting lamp circuit | |
| CN208285591U (en) | Vehicular turn lamp drive circuit | |
| CN2336366Y (en) | Three color indicating device for voltage of power supply | |
| TWI542247B (en) | Applicable for different voltage source of the light-emitting diode device | |
| CN2859722Y (en) | Photoelectron neon lamp | |
| CN204669657U (en) | For the control circuit of driving at night lamp and stop lamp | |
| CN205098033U (en) | Automobile -used colorful LED lamp control system | |
| CN103442494A (en) | LED light source brightness continuously adjustable circuit | |
| CN206542595U (en) | A kind of LED driving control systems | |
| CN208285594U (en) | Vehicle high level brake lamp drive circuit | |
| CN206559676U (en) | Automobile multi color temperature brightness adjustable LED illumination intelligence control system | |
| CN201072112Y (en) | Horizontal type LED lamp with air convection warehouse | |
| CN213028648U (en) | Motorcycle decoding device | |
| CN202103888U (en) | Novel indoor LED lighting lamp | |
| CN216451570U (en) | Multi-spectral illumination light source | |
| CN207835870U (en) | A kind of double-colored gradual change LED light | |
| CN211831244U (en) | Dimming module and LED lamp |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |