CN208285605U - A kind of automobile-used tail portion LOGO lamp lights logic control circuit - Google Patents
A kind of automobile-used tail portion LOGO lamp lights logic control circuit Download PDFInfo
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- CN208285605U CN208285605U CN201820915328.XU CN201820915328U CN208285605U CN 208285605 U CN208285605 U CN 208285605U CN 201820915328 U CN201820915328 U CN 201820915328U CN 208285605 U CN208285605 U CN 208285605U
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Abstract
Logic control circuit is lighted the utility model discloses a kind of automobile-used tail portion LOGO lamp, realize automobile tail LOGO lamp lights demand, overcomes the problem of BCM pin resource anxiety.Its technical solution are as follows: light the main power circuit that logic control circuit includes input protection circuit module, power supply reverse connection protection protection circuit module, logic control circuit modules and constant-current drive circuit module composition, fault diagnosis circuit module.When upper two triodes of electric drive simultaneously turn on two sides of tail position lamp power supply simultaneously, constant-current drive circuit module is just powered on, and realizes that LOGO lamp in tail portion is lighted；Two triodes do not simultaneously turn on to power on to constant-current drive circuit module when any side tail position lamp power supply electrifying, and tail portion LOGO lamp is caused not work.
Description
Technical field
The utility model relates to automobile lamp control circuit, the more particularly, to LOGO lamp of the tail position on vehicle body
Light logic control circuit.
Background technique
Currently, the manufacturer for having tail portion LOGO lamp to light effect in automobile market is very few, but as user brand is realized
And the continuous improvement of fashion idea, for the above vapor mass, later period middle and high end vehicle can be considered as lighting the tail portion of effect
LOGO lamp.In view of all power pins of the existing central control module of upper vapor mass (BCM) have run out, without independent PIN foot
It powers to tail portion LOGO lamp, and LOGO lamp is required to light when Tail works in position lamp mode, work in parking light mode
Extinguish, and GB4785-2007 is distinctly claimed rear light of automobile color, therefore can be encountered perhaps in the LOGO lamp development process of tail portion
More technical problems, the problem of especially being matched with Full Vehicle System and light logic control.
Utility model content
A brief summary of one or more aspects is given below to provide to the basic comprehension in terms of these.This general introduction is not
The extensive overview of all aspects contemplated, and be both not intended to identify critical or decisive element in all aspects also non-
Attempt to define the range in terms of any or all.Its unique purpose is to provide the one of one or more aspects in simplified form
A little concepts are with the sequence for more detailed description given later.
Logic control is lighted purpose of the utility model is to solve the above problems and provide a kind of automobile-used tail portion LOGO lamp
Circuit processed, realize automobile tail LOGO lamp lights demand, overcomes the problem of BCM pin resource anxiety.
The technical solution of the utility model are as follows: what the utility model disclosed a kind of automobile-used tail portion LOGO lamp lights logic control
Circuit processed, including the second input for connecting the first input protection circuit of leftward position lamp power supply, connecting right positions lamp power supply
The power supply reverse connection protection of circuit, the first input protection circuit of connection and the second input protection circuit input terminal is protected to protect circuit mould
Block, is connected to logic control circuit mould at the logic control circuit modules for being connected to power supply reverse connection protection protection circuit module output end
The constant-current drive circuit module of block output end is connected to logic control circuit modules output end and the output of constant-current drive circuit module
The LED circuit module at end, wherein logic control circuit modules power on simultaneously in leftward position lamp power supply and right positions lamp power supply
When just powered on to constant-current drive circuit module, LED is lighted by constant-current drive circuit module drive LED circuit module and is shone.
The embodiment for lighting logic control circuit of automobile-used tail portion LOGO lamp according to the present utility model, power supply reverse connection protection
Protection circuit module is made of four diode D1~D4, and wherein it is defeated to be connected to first by first diode D1 and the second diode D2
Enter to protect the input terminal of circuit, third diode D3 and the 4th diode D4 are connected to the input terminal of the second input protection circuit.
The embodiment for lighting logic control circuit of automobile-used tail portion LOGO lamp according to the present utility model, logic control electricity
Road module is collectively formed by seven resistance R1~R7, three capacitor C1~C3, three triode Q1~Q3.
The embodiment for lighting logic control circuit of automobile-used tail portion LOGO lamp according to the present utility model, first diode
The cathode of D1 and the cathode of third diode D3 are connected to the first end of first resistor R1 together, and the second end of first resistor R1 connects
It is connected to the collector of the first NPN triode Q1, the cathode of the second diode D2 is connected to the first end of second resistance R2, the second electricity
The second end of resistance R2 is connected to the first end of 3rd resistor R3, the first end of first capacitor C1 and the first NPN triode Q1
The second end of base stage, 3rd resistor R3 and first capacitor C1 are connected to the ground, and the emitter of the first NPN triode Q1 is connected to the 4th
The emitter of the first end of resistance R4, the first end of the second capacitor C2 and the second PNP triode Q2, the second PNP triode Q2
Collector be connected to constant-current drive circuit module, the second end of the 4th resistance R4, the second end of the second capacitor C2, the 2nd PNP tri-
The base stage of pole pipe Q2 is connected to the first end for being connected to the 5th resistance R5 afterwards together, and the second end of the 5th resistance R5 is connected to the 3rd NPN
The collector of triode Q3, third NPN triode Q3 emitter ground connection, the base stage of third NPN triode Q3 are connected to the 6th electricity
Hinder the first end of R6, the first end of the 7th resistance R7, the first end of third capacitor C3, the of the 7th resistance R7 and third capacitor C3
Two ends are connected to the ground, and the second end of the 6th resistance R6 is connected to the cathode of the 4th diode D4.
The embodiment for lighting logic control circuit of automobile-used tail portion LOGO lamp according to the present utility model, lights logic control
Circuit processed further includes fault diagnosis circuit module, extinguishes all LED when occurring any one or plurality of LEDs is opened a way.
The embodiment for lighting logic control circuit of automobile-used tail portion LOGO lamp according to the present utility model, LED circuit mould
Block further comprises: a LED light branch, each LED light branch circuit parallel connection combination, each LED light branch are formed per multiple LED light
One diode of road collocation, each LED light branch connect constant current driving by the structure of a resistance connecting triode base stage
Circuit module.
The embodiment for lighting logic control circuit of automobile-used tail portion LOGO lamp according to the present utility model, each LED light branch
The cathode of the diode of road collocation is connected to the first end of the 9th resistance R9 after being connected together, the second end of the 9th resistance R9 is connected to the
First end, the first end of the 4th capacitor C4 and the base stage of the 4th triode Q4 of eight resistance R8, the second end of the 8th resistance R8,
The second end of 4th capacitor C4 and the emitter of the 4th NPN triode Q4 are connected to the ground, the collector of the 4th NPN triode Q4
It is connected to the base stage of third NPN triode, wherein when a certain LED light branch is opened a way, two poles of each LED light branch collocation
The current potential of tube cathode is elevated, the 4th NPN triode Q4 of the driving conducting after the 9th resistance R9 and the 8th resistance R8 partial pressure, by the
The base potential of three triode Q3 is dragged down to turn off constant-current drive circuit module.
The embodiment for lighting logic control circuit of automobile-used tail portion LOGO lamp according to the present utility model, works as leftward position
Lamp power supply electrifying and right positions lamp power supply does not power on, third transistor Q3 shutdown, the 4th resistance R4 and the 5th resistance R5 do not have
Current loop turns off the second triode Q2 to ground, and constant-current drive circuit module does not power on.
The embodiment for lighting logic control circuit of automobile-used tail portion LOGO lamp according to the present utility model, works as leftward position
Lamp power supply does not power on and right positions lamp power supply electrifying, and the first triode Q1 shutdown, the 4th resistance R4 and the 5th resistance R5 is without electricity
Stream flows to the emitter of the second triode Q2 and turns off the second triode Q2, and constant-current drive circuit module does not power on.
The embodiment for lighting logic control circuit of automobile-used tail portion LOGO lamp according to the present utility model, works as leftward position
Lamp power supply and right positions lamp power supply power on simultaneously, and the circuit that the second diode D2, second resistance R2,3rd resistor R3 are constituted is driven
Dynamic first triode Q1 is connected by first resistor R1, the circuit that the 4th diode D4, the 6th resistance R6, the 7th resistance R7 are constituted
Third transistor Q3 conducting is driven, to make third transistor Q3 saturation conduction, third transistor Q3 collector is short-circuited to ground, electricity
Stream makes the two or three pole by first resistor R1, the first triode Q1, the 4th resistance R4, the 5th resistance R5, third transistor Q3
Pipe Q2 conducting, powers on to constant-current drive circuit module, drives LED circuit module lightening LED lamp.
The utility model comparison prior art has following the utility model has the advantages that interior existing central control module (BCM) pipe
Foot resource is nervous, powers without individual PIN foot to tail portion LOGO lamp, it is contemplated that automobile tail LOGO lamp is generally seated in car tail
On plaque, and require with position lamp light on and off simultaneously, therefore be respectively adopted leftward position lamp power supply and right positions lamp power supply to
The power supply of LOGO lamp.
According to GB4785-2007 laws and regulations requirement, moved within the scope of extremely 15 ° of the right side of 15 ° of a left side for cross section at 25m after observer is in vehicle
When in-motion viewing is examined, it should not be immediately seen the transparent surface of white lamps and lanterns, and tail portion lamps and lanterns on the market are in addition to back-up lamp and turn signal,
Complementary work energy (position lamp, brake lamp) lamps and lanterns are red.Effect is lighted for cooperation taillight, using red in the design of tail portion LOGO lamp
Color.It includes input protection circuit module, D1~D4 that automobile-used tail portion LOGO lamp provided by the utility model, which lights logic control circuit,
The power supply reverse connection protection protection circuit module of composition, the logic control circuit modules that R1~R7, C1~C3, Q1~Q3 are constituted, R1,
The main power circuit of Q1, Q2, LED1~LED3n+3, Q5~Qn+5, R10~Rn+10 and constant-current drive circuit composition, LED1
The fault diagnosis circuit module that~LED3n+3, D5~Dn+5, R8, R9, C4, Q4, Q3 is constituted.R1, Q1, Q2 and constant current in circuit
Drive circuit module series connection, only when two sides power supply powers on constant-current drive circuit mould when driving triode Q1 and Q2 are simultaneously turned on simultaneously
Block just powers on, and realizes that LOGO lamp in tail portion is lighted；Triode Q1 and Q2, which are not simultaneously turned on, when any one side position lamp power supply electrifying comes
It is powered on to constant-current drive circuit module, therefore tail portion LOGO lamp does not work.
Detailed description of the invention
After the detailed description for reading embodiment of the disclosure in conjunction with the following drawings, it better understood when that this is practical new
The features described above and advantage of type.In the accompanying drawings, each component is not necessarily drawn to scale, and with similar correlation properties or
The component of feature may have same or similar appended drawing reference.
Fig. 1 is the circuit diagram of the embodiment for lighting logic control circuit of the automobile-used tail portion LOGO lamp of the utility model.
Fig. 2 is that Q2, Q3 are turned off when Tail sinistral power (leftward position lamp power supply) powers to LOGO circuit for lamp, when Q1 is connected
Current diagram.
Fig. 3 is that Q2~Q3 is connected when Tail east power (right positions lamp power supply) powers to LOGO circuit for lamp, Q1 shutdown
When current diagram.
When Fig. 4 is Tail sinistral power (leftward position lamp power supply) and east power (right positions lamp power supply) is powered simultaneously
Current diagram when Q1~Q4 is connected.
Fig. 5 be the power supply simultaneously of Tail sinistral power (leftward position lamp power supply) and east power (right positions lamp power supply) and
Current diagram when LED1 opens a way.
Fig. 6 is the circuit of the artificial circuit example for lighting logic control circuit of the automobile-used tail portion LOGO lamp of the utility model
Figure.
The electric current that Fig. 7 is LED1 when Tail sinistral power (leftward position lamp power supply) is powered to LOGO circuit for lamp in Fig. 6 is imitative
True waveform diagram.
The electric current that Fig. 8 is LED1 when Tail east power (right positions lamp power supply) is powered to LOGO circuit for lamp in Fig. 6 is imitative
True waveform diagram.
Fig. 9 is that Tail sinistral power (leftward position lamp power supply) and east power (right positions lamp power supply) be simultaneously in Fig. 6
The current simulations waveform diagram of LED1 when power supply.
Figure 10 is that (leftward position lamp power supply), east power (right positions lamp power supply) are powered simultaneously on the left of Tail in Fig. 6
And LED1 open a way when LED4 and LED3n+1 current simulations waveform diagram.
Specific embodiment
The utility model is described in detail below in conjunction with the drawings and specific embodiments.Note that below in conjunction with attached drawing and tool
The aspects of body embodiment description is merely exemplary, and is understood not to carry out the protection scope of the utility model any
Limitation.
Following table is the strategy for lighting logic control circuit of the utility model, is illustrated only when Tail sinistral power (left side
Position lamp power supply) and Tail east power (right positions lamp power supply) simultaneously when powering on, tail portion LOGO lamp is lighted, remaining supplier of electricity
Formula does not work.
| Right positions lamp power supply electrifying | Right positions lamp power supply does not power on | |
| Leftward position lamp power supply electrifying | Tail portion LOGO lamp is lighted | Tail portion LOGO lamp does not work |
| Leftward position lamp power supply does not power on | Tail portion LOGO lamp does not work | Tail portion LOGO lamp does not work |
Fig. 1 is the circuit structure of the embodiment for lighting logic control circuit of the automobile-used tail portion LOGO lamp of the utility model.
Referring to Figure 1, the logic control circuit of lighting of the present embodiment includes (the first input protection in figure of two input protection circuit modules
Circuit module connects leftward position lamp power supply, that is, the Tail sinistral power illustrated, the second input protection circuit module connection right side
Position lamp power supply, that is, the Tail east power illustrated), the power supply reverse connection protection that diode D1~D4 is constituted protects circuit module, electricity
Core (the i.e. logic control circuit of the circuit of the present embodiment that resistance R1~R7, capacitor C1~C3, triode Q1~Q3 are collectively formed
Module), constant-current drive circuit module, LED circuit module.Wherein power supply reverse connection protection protection circuit module is connected to the first input guarantor
The input terminal of protection circuit and the second input protection circuit, to prevent reverse power connection from impacting to circuit.Logic control circuit mould
Block is connected to power supply reverse connection protection protection circuit module output end, and it is defeated that constant-current drive circuit module is connected to logic control circuit modules
Outlet, LED circuit module are connected to logic control circuit modules output end and constant-current drive circuit module output end.
Specifically, logic control circuit modules are by seven resistance R1~R7, three capacitor C1~C3, three triode Q1
~Q3 is collectively formed.The cathode of diode D1 and the cathode of diode D3 are connected to the first end of resistance R1 together, resistance R1's
Second end is connected to the collector of NPN triode Q1, and the cathode of diode D2 is connected to the first end of resistance R2, and the of resistance R2
Two ends are connected to the base stage of the first end of resistance R3, the first end of capacitor C1 and NPN triode Q1, resistance R3 and capacitor C1's
Second end is connected to the ground, and the emitter of NPN triode Q1 is connected to the first end of resistance R4, the first end of capacitor C2 and PNP
The emitter of triode Q2, the collector of PNP triode Q2 are connected to constant-current drive circuit module, the second end of resistance R4, capacitor
The second end of C2, the base stage of PNP triode Q2 are connected to the first end for being connected to resistance R5 afterwards together, and the second end of resistance R5 is connected to
The collector of NPN triode Q3, NPN triode Q3 emitter ground connection, the base stage of NPN triode Q3 are connected to the first of resistance R6
The second end of end, the first end of resistance R7, the first end of capacitor C3, resistance R7 and capacitor C3 are connected to the ground, and the second of resistance R6
End is connected to the cathode of diode D4.
Logic control circuit modules power on simultaneously at two power supplys (the Tail sinistral power and Tail east power of diagram)
When just powered on to constant-current drive circuit module, and LED is lighted by constant-current drive circuit module drive LED circuit module and is shone.When
Constant-current drive circuit module powers on when triode Q1, Q2 are both turned on, and driving LED lights luminous.
LED circuit module includes: (example is 3 one group of LED light composition one branches in figure) composition one per multiple LED light
A LED light branch, each LED light branch circuit parallel connection combination, one diode of each LED light branch collocation (such as LED1~
The corresponding diode D5 of branch collocation of LED3), each LED light branch passes through the structure of a resistance connecting triode base stage
Connection constant-current drive circuit module (such as the branch of LED1~LED3 connects constant-current drive circuit mould with the structure of Q5 by R10
Block).
In addition, the logic control circuit of lighting of the present embodiment further includes fault diagnosis circuit module, for occurring arbitrarily
One or plurality of LEDs extinguish all LED when opening a way.The diode of all LED1~LED3n+3, each LED branch of arranging in pairs or groups
D5~Dn+5 and the fault diagnosis circuit module collective effect being made of resistance R8, R9, capacitor C4, triode Q4, Q3, are sending out
Any one of life or plurality of LEDs extinguish all LED when opening a way.
Specifically, the cathode of the diode of each LED light branch collocation is connected to the first end of resistance R9, electricity after being connected together
The second end of resistance R9 is connected to the base stage of the first end of resistance R8, the first end of capacitor C4 and triode Q4, and the second of resistance R8
The emitter at end, the second end of capacitor C4 and NPN triode Q4 is connected to the ground, and the collector of NPN triode Q4 is connected to NPN
The base stage of triode.When a certain LED light branch is opened a way, the current potential of the diode cathode of each LED light branch collocation is lifted
Height, driving NPN triode Q4 conducting, the base potential of triode Q3 is dragged down to turn off perseverance after resistance R9 and resistance R8 partial pressure
Flow drive circuit module.
Fig. 2 is the current diagram when Tail sinistral power of the utility model powers on, with reference to shown in dotted arrow in Fig. 2
Current direction.At this time because east power does not power on, therefore triode Q3 is turned off, and R4, R5 do not have current loop to make three poles to ground
Pipe Q2 shutdown, constant-current drive circuit module do not power on, and all LED do not work.Because Tail sinistral power powers on, D2, R2, R3 constitute the
One current loop；D1, LED1~LED3, D5, R9, R8 constitute second current loop；D1, LED4~LED6, D6, R9, R8
Constitute third current loop；And so on, D1, LED1~LED3n+3, Dn+5, R9, R8 constitute n-th of current loop.
Fig. 3 is current diagram when Tail east power powers on, the current direction with reference to shown in dotted arrow in Fig. 3.
At this time because sinistral power does not power on, therefore triode Q1 is turned off, and R4, R5 do not have electric current to flow to the emitter of triode Q2 and make three poles
Pipe Q2 shutdown, constant-current drive circuit module do not power on, and all LED do not work.Because Tail east power powers on, D4, R6, R7 constitute the
One current loop；D3, LED1~LED3, D5, R9, R8 constitute second current loop；D3, LED4~LED6, D6, R9, R8
Constitute third current loop；And so on, D3, LED1~LED3n+3, Dn+5, R9, R8 constitute n-th of current loop.
Current diagram when Fig. 4 is Tail sinistral power and Tail east power while powering on, with reference to dotted line arrow in Fig. 4
Current direction shown in head.Because sinistral power powers on, the circuit driving triode Q1 that D2, R2, R3 are constituted is connected by resistance R1.
Because east power powers on, the circuit driving triode Q3 conducting that D4, R6, R7 are constituted, to make triode Q3 saturation conduction, Q3 collection
Electric pole short circuit is extremely.Because triode Q1, Q3 are connected, triode Q2 is connected by R1, Q1, R4, R5, Q3 in electric current, gives constant current
Drive circuit module powers on, and driving LED1~LED3n+3 is lighted.At this time the voltage of diode D5, D6, Dn+5 cathode because LED1~
LED3n+3 forward conduction and clamper are insufficient to allow triode Q4 to be connected after resistance R9, R8 partial pressure.
Fig. 5 is current diagram when Tail sinistral power and Tail east power power on simultaneously and LED1 opens a way, reference
Current direction shown in dotted arrow in Fig. 5.Because LED1 opens a way, the voltage of diode D5, D6, Dn+5 cathode can be increased, through electricity
It hinders after R9, R8 are divided so that triode Q4 conducting, the base stage of triode Q3 is dragged down, so that triode Q3 be made to turn off, R4, R5 do not have
There is current loop to close Q2 to ground, constant-current drive circuit module closes all LED because not powering on.
Fig. 6 is the artificial circuit example for lighting logic control circuit of the automobile-used tail portion LOGO lamp of the utility model.This is
The critical electronic element in Fig. 2 is assigned to special parameter, to further verify the reliability of circuit.Fig. 7~Figure 10 is respectively
The current simulations waveform of LED is flowed through when Fig. 2~Fig. 5 different working modes.By Fig. 7, Fig. 8 and Figure 10 it is found that in only side
Tail power supply is powered on to circuit, and flowing through the electric current of LED when two sides power supply powers on simultaneously and LED1 opens a way is A grades of μ, and LED does not work.
As shown in Figure 9, Tail sinistral power and Tail east power power on simultaneously and when LED does not open a way, and LED is normally lighted.
Find out from above-described embodiment, the utility model has following innovative point:
(1) to meet GB4785-2007 requirement, LOGO is designed as red, with position lamp light on and off simultaneously；
(2) LOGO lamp lighting logical requirements are fully considered in BCM resource anxiety, make full use of left and right side position lamp electric
Source powers for it；
(3) it is equivalent to when making full use of on state characteristic and the series connection of triode and the characteristics of door, and in view of on vehicle body
The installation space size of LOGO lamp limits, and realizes the lighting logic control of LOGO lamp with higher cost performance；
(4) can according to LED particle quantity number, flexibly increase and decrease circuit in Rn+10, LED1~LED3n+3, Dn+5, Qn+
The 5 circuit numbers constituted, realizing has the occasion flexible Application of different LED load quantity in LOGO lamp；
(5) if when LED particle number is more OEM vendor have to LOGO lamp LED can reliably extinguish when N-1=0 requirement it is all
LED, whole lamp consumption electric current are less than 10mA.
Offer is to make any person skilled in the art all and can make or use this public affairs to the previous description of the disclosure
It opens.The various modifications of the disclosure all will be apparent for a person skilled in the art, and as defined herein general
Suitable principle can be applied to other variants without departing from the spirit or scope of the disclosure.The disclosure is not intended to be limited as a result,
Due to example described herein and design, but should be awarded and principle disclosed herein and novel features phase one
The widest scope of cause.
Claims (10)
1. a kind of automobile-used tail portion LOGO lamp lights logic control circuit, which is characterized in that including connecting leftward position lamp power supply
The first input protection circuit, connect right positions lamp power supply the second input protection circuit, connection the first input protection circuit
Circuit module is protected with the power supply reverse connection protection of the second input protection circuit input terminal, is connected to power supply reverse connection protection protection circuit module
The logic control circuit modules of output end, the constant-current drive circuit module for being connected to logic control circuit modules output end, connection
In the LED circuit module of logic control circuit modules output end and constant-current drive circuit module output end, wherein logic control is electric
Road module is just powered on to constant-current drive circuit module when leftward position lamp power supply and right positions lamp power supply power on simultaneously, by perseverance
Stream drive circuit module driving LED circuit module lights LED and shines.
2. automobile-used tail portion LOGO lamp according to claim 1 lights logic control circuit, which is characterized in that power supply counnter attack
It connects protection circuit module to be made of four diode D1~D4, wherein first diode D1 and the second diode D2 are connected to first
The input terminal of input protection circuit, third diode D3 and the 4th diode D4 are connected to the input of the second input protection circuit
End.
3. automobile-used tail portion LOGO lamp according to claim 2 lights logic control circuit, which is characterized in that logic control
Circuit module is collectively formed by seven resistance R1~R7, three capacitor C1~C3, three triode Q1~Q3.
4. automobile-used tail portion LOGO lamp according to claim 3 lights logic control circuit, which is characterized in that the one or two pole
The cathode of pipe D1 and the cathode of third diode D3 are connected to the first end of first resistor R1, the second end of first resistor R1 together
It is connected to the collector of the first NPN triode Q1, the cathode of the second diode D2 is connected to the first end of second resistance R2, and second
The second end of resistance R2 is connected to the first end of 3rd resistor R3, the first end of first capacitor C1 and the first NPN triode Q1
Base stage, the second end of 3rd resistor R3 and first capacitor C1 is connected to the ground, and the emitter of the first NPN triode Q1 is connected to
The emitter of the first end of four resistance R4, the first end of the second capacitor C2 and the second PNP triode Q2, the second PNP triode
The collector of Q2 is connected to constant-current drive circuit module, the second end of the 4th resistance R4, the second end of the second capacitor C2, the 2nd PNP
The base stage of triode Q2 is connected to the first end for being connected to the 5th resistance R5 afterwards together, and the second end of the 5th resistance R5 is connected to third
The collector of NPN triode Q3, third NPN triode Q3 emitter ground connection, the base stage of third NPN triode Q3 are connected to the 6th
The first end of resistance R6, the first end of the 7th resistance R7, the first end of third capacitor C3, the 7th resistance R7 and third capacitor C3's
Second end is connected to the ground, and the second end of the 6th resistance R6 is connected to the cathode of the 4th diode D4.
5. automobile-used tail portion LOGO lamp according to claim 4 lights logic control circuit, which is characterized in that light logic
Control circuit further includes fault diagnosis circuit module, extinguishes all LED when occurring any one or plurality of LEDs is opened a way.
6. automobile-used tail portion LOGO lamp according to claim 5 lights logic control circuit, which is characterized in that LED circuit
Module further comprises: a LED light branch, each LED light branch circuit parallel connection combination, each LED light are formed per multiple LED light
Branch one diode of collocation, each LED light branch are connected by the structure of a current balancing resistors connecting triode base stage
Connect constant-current drive circuit module.
7. automobile-used tail portion LOGO lamp according to claim 6 lights logic control circuit, which is characterized in that each LED light
The cathode of the diode of branch collocation is connected to the first end of the 9th resistance R9 after being connected together, the second end of the 9th resistance R9 is connected to
First end, the first end of the 4th capacitor C4 and the base stage of the 4th triode Q4 of 8th resistance R8, the second of the 8th resistance R8
The emitter at end, the second end of the 4th capacitor C4 and the 4th NPN triode Q4 is connected to the ground, the collection of the 4th NPN triode Q4
Electrode is connected to the base stage of third NPN triode, wherein when a certain LED light branch is opened a way, each LED light branch collocation
The current potential of diode cathode is elevated, the 4th NPN triode Q4 of the driving conducting after the 9th resistance R9 and the 8th resistance R8 partial pressure,
The base potential of third transistor Q3 is dragged down to turn off constant-current drive circuit module.
8. automobile-used tail portion LOGO lamp according to claim 7 lights logic control circuit, which is characterized in that work as left lateral position
Set lamp power supply electrifying and right positions lamp power supply does not power on, third transistor Q3 shutdown, the 4th resistance R4 and the 5th resistance R5 do not have
There is current loop to turn off the second triode Q2 to ground, constant-current drive circuit module does not power on.
9. automobile-used tail portion LOGO lamp according to claim 8 lights logic control circuit, which is characterized in that work as left lateral position
It sets lamp power supply not power on and right positions lamp power supply electrifying, the first triode Q1 shutdown, the 4th resistance R4 and the 5th resistance R5 does not have
Electric current flows to the emitter of the second triode Q2 and turns off the second triode Q2, and constant-current drive circuit module does not power on.
10. automobile-used tail portion LOGO lamp according to claim 9 lights logic control circuit, which is characterized in that work as left side
Position lamp power supply and right positions lamp power supply power on simultaneously, and what the second diode D2, second resistance R2,3rd resistor R3 were constituted returns
Road drives the first triode Q1 to be connected by first resistor R1, and the 4th diode D4, the 6th resistance R6, the 7th resistance R7 are constituted
Circuit drives third transistor Q3 conducting, to make third transistor Q3 saturation conduction, third transistor Q3 collector is short-circuited to
Ground, electric current make second by first resistor R1, the first triode Q1, the 4th resistance R4, the 5th resistance R5, third transistor Q3
Triode Q2 conducting, powers on to constant-current drive circuit module, drives LED circuit module lightening LED lamp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820915328.XU CN208285605U (en) | 2018-06-13 | 2018-06-13 | A kind of automobile-used tail portion LOGO lamp lights logic control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820915328.XU CN208285605U (en) | 2018-06-13 | 2018-06-13 | A kind of automobile-used tail portion LOGO lamp lights logic control circuit |
Publications (1)
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| CN208285605U true CN208285605U (en) | 2018-12-25 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108601155A (en) * | 2018-06-13 | 2018-09-28 | 上汽大众汽车有限公司 | A kind of automobile-used tail portion LOGO lamps light logic control circuit |
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2018
- 2018-06-13 CN CN201820915328.XU patent/CN208285605U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108601155A (en) * | 2018-06-13 | 2018-09-28 | 上汽大众汽车有限公司 | A kind of automobile-used tail portion LOGO lamps light logic control circuit |
| CN108601155B (en) * | 2018-06-13 | 2023-06-06 | 上汽大众汽车有限公司 | Lighting logic control circuit of tail LOGO lamp for vehicle |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20181225 Effective date of abandoning: 20230606 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20181225 Effective date of abandoning: 20230606 |