CN208609233U - Automobile LED lamp lighting control circuit structure - Google Patents
Automobile LED lamp lighting control circuit structure Download PDFInfo
- Publication number
- CN208609233U CN208609233U CN201820113497.1U CN201820113497U CN208609233U CN 208609233 U CN208609233 U CN 208609233U CN 201820113497 U CN201820113497 U CN 201820113497U CN 208609233 U CN208609233 U CN 208609233U
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- China
- Prior art keywords
- control circuit
- circuit
- led light
- constant
- light source
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- 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.)
- Expired - Fee Related
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Abstract
The utility model discloses a kind of automobile LED lamp lighting control circuit structures.Including power input, input rectification circuit and LED light source, constant-current control circuit is provided between input rectification circuit and LED light source, LED light source can be controlled by constant-current control circuit and keep constant current, LED light source also successively reconnects constant-current control circuit by broken circuit detection circuit and breaking control circuit, broken circuit detection circuit is able to detect that whether LED light source exception and will test information and be transferred to breaking control circuit and controlled, and breaking control circuit controls the voltage output of constant-current control circuit according to abnormality.With the above structure, there is any one LED lamp bead to break down, after disconnection, broken circuit detection circuit can detect and directly trigger breaking control circuit, it allows current constant control part to stop working, realizes that all lamp beads of entire LED light are all extinguished, circuit structure design is ingenious, design cost is low, and use reliability is high and avoids using high cost problem brought by control chip.
Description
Technical field
The utility model relates to a kind of control circuit of car light, specifically a kind of automobile LED lamp lighting control circuit knot
Structure.
Background technique
Automobile LED car light is usually to have plurality of LEDs lamp to be composed by different series-parallel systems；If wherein had
Multi-channel parallel, if that wherein has a LED lamp to damage or is breaking, that does not work all the way in addition to that of damage, remaining parallel connection
LED still can be bright.But if there is damaging all the way, it is likely that the light distribution of entire car light has not reached requirement.So
Present vehicle factor generally can all have the requirement of N-1 to some LED car lamps (such as turn signal, part daytime running lights etc.), refer specifically to work as LED
When having a lamp bead damage or open circuit inside lamp, it is desirable that all lamp beads of this LED light are all extinguished.
Currently, realize that the circuit of this N-1 mainly adds feed circuit by specifically controlling chip and realizes, this side
Although formula can reach requirement, the cost that it is expended is very high, is unfavorable for saving manufacturing cost, improves economic effect
Benefit.
Summary of the invention
That the technical problem to be solved by the present invention is to provide a kind of structures is simple, manufacturing cost is low, so as to improve
The automobile LED lamp lighting control circuit structure of economic benefit.
In order to solve the above-mentioned technical problem, the automobile LED lamp lighting control circuit structure of the utility model, including power input
The LED light source holding, being connected to the input rectification circuit of power input and connect with input rectification circuit, input rectification circuit
Constant-current control circuit is provided between LED light source, LED light source can be controlled by constant-current control circuit and keep constant current, LED light
Source also successively reconnects constant-current control circuit by broken circuit detection circuit and breaking control circuit, and broken circuit detection circuit is able to detect
Whether exception and will test information to LED light source and be transferred to breaking control circuit and controlled, breaking control circuit is according to exception
The voltage output of state control constant-current control circuit.
Triode Q1 and triode Q2, the current constant control are provided between the LED light bead string and constant-current control circuit
Triode Q1 and triode Q2 conducting can be controlled to make the electric current of LED light source keep the pressure stabilizing of constant current by being provided on circuit
Pipe D7.
It is provided with triode Q4 on the broken circuit detection circuit, is provided with metal-oxide-semiconductor Q3, institute in the open circuit control circuit
The base stage of triode Q4 and the circuit connection of LED light source are stated, the collector of the triode Q4 connects breaking control circuit
Metal-oxide-semiconductor Q3 and the metal-oxide-semiconductor conducting that breaking control circuit can be triggered according to abnormality detection information, the open circuit control circuit
The voltage-stabiliser tube D7 connection of metal-oxide-semiconductor and constant-current control circuit.
After above-mentioned structure, due to the constant-current control circuit that is arranged between input rectification circuit and LED light source with
And the broken circuit detection circuit being arranged between LED light source and constant-current control circuit and breaking control circuit, when in entire circuit system
There is any one LED lamp bead to break down, after disconnection, broken circuit detection circuit can detect and directly trigger open circuit control electricity
Road allows current constant control part to stop working, and realizes the function that all lamp beads of entire LED light are all extinguished, and circuit structure is set
Count ingenious, design cost is low, and use reliability is high and avoids traditionally using high cost problem brought by control chip.
Detailed description of the invention
Fig. 1 is the functional block diagram of the utility model automobile LED lamp lighting control circuit structure；
Fig. 2 is the circuit diagram of the utility model automobile LED lamp lighting control circuit structure.
Specific embodiment
With reference to the accompanying drawings and detailed description, to the automobile LED lamp lighting control circuit structure of the utility model make into
One step is described in detail.
As shown, the automobile LED lamp lighting control circuit structure of the utility model, including power input, it is connected to electricity
The input rectification circuit of source input terminal and the LED light source being connect with input rectification circuit, input rectification circuit and LED light source
Between be provided with constant-current control circuit, LED light source can be controlled by constant-current control circuit and keep constant current, and LED light source also successively pass through
It crosses broken circuit detection circuit and breaking control circuit reconnects constant-current control circuit, broken circuit detection circuit is able to detect that LED light source
Whether exception and will test information and be transferred to breaking control circuit and controlled, breaking control circuit controls permanent according to abnormality
The voltage output of flow control circuit.
Wherein, triode Q1 and triode Q2, the constant current control are provided between LED light bead string and constant-current control circuit
Triode Q1 and triode Q2 conducting can be controlled to make the electric current of LED light source keep the pressure stabilizing of constant current by being provided on circuit processed
Pipe D7, the both ends voltage-stabiliser tube D7 have A point and B point, and triode Q4, the open circuit control circuit are provided on broken circuit detection circuit
On be provided with MOS pipe Q3, the base stage of triode Q4 and the circuit connection of LED light source, the collector connection open circuit control of triode Q4
The metal-oxide-semiconductor Q3 of circuit processed and the metal-oxide-semiconductor conducting that breaking control circuit can be triggered according to abnormality detection information, breaking control circuit
Metal-oxide-semiconductor and constant-current control circuit voltage-stabiliser tube D7 connection.
Its working principles are as follows:
There are the A point and B point control triode Q1 at the both ends voltage-stabiliser tube D7 when circuit works normally, Q2's (NPN triode)
Conducting is to make LED current keep constant current, at this point, the Q4 (PNP triode) of observation circuit is because base voltage exceeds emitter
Voltage, Q4 cut-off, meanwhile, the metal-oxide-semiconductor Q3 of control circuit also keeps ending.Break monitoring circuit and control circuit keep ending
State.
There are LED lamp bead damage or open circuit, the Q4 base voltage of observation circuit that can be pulled low at once all the way when any in circuit,
Emitter voltage is caused to exceed base voltage, Q4 is begun to turn on；Q4 mono- be connected, collector will trigger control circuit metal-oxide-semiconductor
Conducting, metal-oxide-semiconductor one are connected, then drag down the voltage of current constant control part A point, and after A point voltage pull-down, Q1, Q2 then ends, shutdown
LED electric current is achieved in the function that all lamp beads of entire LED light are all extinguished.
Claims (3)
1. a kind of automobile LED lamp lighting control circuit structure, including power input, it is connected to the input rectifying electricity of power input
Road and the LED light source being connect with input rectification circuit, it is characterised in that: set between the input rectification circuit and LED light source
It is equipped with constant-current control circuit, the LED light source can be controlled by constant-current control circuit and keep constant current, and the LED light source is also successively
Constant-current control circuit is reconnected by broken circuit detection circuit and breaking control circuit, the broken circuit detection circuit is able to detect that
Whether LED light source exception and will test information and is transferred to breaking control circuit and controlled, and the open circuit control circuit is according to different
The voltage output of normal state control constant-current control circuit.
2. automobile LED lamp lighting control circuit structure described in accordance with the claim 1, it is characterised in that: the LED light source and constant current
Triode Q1 and triode Q2 are provided between control circuit, triode Q1 can be controlled by being provided on the constant-current control circuit
The voltage-stabiliser tube D7 for making the electric current of LED light source keep constant current is connected with triode Q2.
3. automobile LED lamp lighting control circuit structure according to claim 2, it is characterised in that: the broken circuit detection circuit
On be provided with triode Q4, be provided with metal-oxide-semiconductor Q3, the base stage and LED light source of the triode Q4 in the open circuit control circuit
Circuit connection, the metal-oxide-semiconductor Q3 that the collector of the triode Q4 connects breaking control circuit can simultaneously believe according to abnormality detection
Breath triggers the metal-oxide-semiconductor conducting of breaking control circuit, the open circuit metal-oxide-semiconductor of control circuit and the voltage-stabiliser tube D7 of constant-current control circuit
Connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820113497.1U CN208609233U (en) | 2018-01-24 | 2018-01-24 | Automobile LED lamp lighting control circuit structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820113497.1U CN208609233U (en) | 2018-01-24 | 2018-01-24 | Automobile LED lamp lighting control circuit structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208609233U true CN208609233U (en) | 2019-03-15 |
Family
ID=65659781
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820113497.1U Expired - Fee Related CN208609233U (en) | 2018-01-24 | 2018-01-24 | Automobile LED lamp lighting control circuit structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208609233U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11032896B2 (en) | 2019-08-28 | 2021-06-08 | Chicony Power Technology Co., Ltd. | Control apparatus for light emitting diodes |
| CN113597056A (en) * | 2020-04-30 | 2021-11-02 | 常州星宇车灯股份有限公司 | Circuit and control method for enabling bulb and LED to work simultaneously and achieving N-1 function |
-
2018
- 2018-01-24 CN CN201820113497.1U patent/CN208609233U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11032896B2 (en) | 2019-08-28 | 2021-06-08 | Chicony Power Technology Co., Ltd. | Control apparatus for light emitting diodes |
| CN113597056A (en) * | 2020-04-30 | 2021-11-02 | 常州星宇车灯股份有限公司 | Circuit and control method for enabling bulb and LED to work simultaneously and achieving N-1 function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190315 Termination date: 20210124 |