CN110186009A - LED automobile lamps and lanterns - Google Patents
LED automobile lamps and lanterns Download PDFInfo
- Publication number
- CN110186009A CN110186009A CN201910639272.9A CN201910639272A CN110186009A CN 110186009 A CN110186009 A CN 110186009A CN 201910639272 A CN201910639272 A CN 201910639272A CN 110186009 A CN110186009 A CN 110186009A
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- China
- Prior art keywords
- pin foot
- led
- current
- power supply
- limiting resistance
- Prior art date
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
- F21S43/10—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source
- F21S43/13—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source characterised by the type of light source
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
- F21S43/10—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source
- F21S43/19—Attachment of light sources or lamp holders
- F21S43/195—Details of lamp holders, terminals or connectors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V23/00—Arrangement of electric circuit elements in or on lighting devices
- F21V23/003—Arrangement of electric circuit elements in or on lighting devices the elements being electronics drivers or controllers for operating the light source, e.g. for a LED array
- F21V23/004—Arrangement of electric circuit elements in or on lighting devices the elements being electronics drivers or controllers for operating the light source, e.g. for a LED array arranged on a substrate, e.g. a printed circuit board
- F21V23/005—Arrangement of electric circuit elements in or on lighting devices the elements being electronics drivers or controllers for operating the light source, e.g. for a LED array arranged on a substrate, e.g. a printed circuit board the substrate is supporting also the light source
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V23/00—Arrangement of electric circuit elements in or on lighting devices
- F21V23/02—Arrangement of electric circuit elements in or on lighting devices the elements being transformers, impedances or power supply units, e.g. a transformer with a rectifier
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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]
- H05B45/10—Controlling the intensity of the light
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
- F21W2103/00—Exterior vehicle lighting devices for signalling purposes
- F21W2103/10—Position lights
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
- F21W2103/00—Exterior vehicle lighting devices for signalling purposes
- F21W2103/35—Brake lights
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
- F21W2107/00—Use or application of lighting devices on or in particular types of vehicles
- F21W2107/10—Use or application of lighting devices on or in particular types of vehicles for land vehicles
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/10—Light-emitting diodes [LED]
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Lighting Device Outwards From Vehicle And Optical Signal (AREA)
Abstract
The present invention relates to a kind of LED automobile lamps and lanterns, its light source uses the LED bulb with driving, LED bulb is directly electrically connected with car running computer, the electric interfaces structure of LED bulb is equipped with 2 pin feet, it is ground connection pin foot and power supply pin foot respectively, diode is sequentially connected in series between two pin feet, current-limiting resistance unit and LED string, current-limiting resistance in current-limiting resistance unit is one or is in parallel multiple, the plurality of LEDs that LED goes here and there including one or is connected in series, or, the electric interfaces structure of LED bulb is equipped with 3 pin feet, it is ground connection pin foot respectively, first power supply pin foot and second source pin foot, first, second source pin foot is respectively through first, second diode is separately connected first, one end of second current-limiting resistance unit, first, second current-limiting resistance list The other end of member contacts through LED and is grounded pin foot.Light source of the present invention can self-changeable, whole lamp longer life expectancy, maintenance cost is lower.
Description
Technical field
The present invention relates to a kind of using LED as the automobile lamp of light source, and especially its LED light source is convenient for changing and can be by vehicle
The automobile lamp of the direct wiring power supply of body voltage, belongs to car light manufacturing technology field.
Background technique
In existing automobile lamp, when light source is LED, require to control electric current by LED drive module to reach
Suitable luminous flux, in general, LED light source and drive module are all installed in lamp interior.Once LED light source damages, whole
A lamps and lanterns will be scrapped；If drive module is damaged, LED light source can not drive and light, and entire lamps and lanterns will also be scrapped, it is seen that no matter
It is LED light source or drive module, which, which is damaged, all will seriously reduce the service life of entire lamps and lanterns, and once damage needs
Replace entire lamps and lanterns, it is also necessary to which the maintenance agency to profession just can be carried out replacement, cause the use of corresponding lamps and lanterns, maintenance cost inclined
It is high.
Summary of the invention
The object of the present invention is to provide a kind of LED automobile lamps and lanterns, the longer life expectancy of entire lamps and lanterns, maintenance cost is lower.
Main technical schemes of the invention have:
A kind of LED automobile lamps and lanterns are equipped with lamp body and light source, and the light source uses the LED bulb with driving circuit, described
The lamp holder of LED bulb is fixed on the lamp body, and LED is located in the lamp chamber that lamp body surrounds, and driving circuit is integrated in lamp holder.
The lamp holder of the LED bulb and the junction of lamp body are sealed using sealing ring.
The electric interfaces structure of the LED bulb includes 2-3 pin foot.
The electric interfaces structure of the LED bulb can be equipped with 2 pin feet, be to be grounded pin foot and power supply pin foot respectively,
Anti-reverse diode, current-limiting resistance unit and LED string, the current limliting electricity have been sequentially connected in series between power supply pin foot and ground connection pin foot
Hindering the current-limiting resistance in unit is one or more, in parallel each other when having multiple, and the LED string includes one or more
LED connects each other when for more.
The electric interfaces structure of the LED bulb can be equipped with 3 pin feet, be ground connection pin foot, the first power supply pin respectively
Foot and second source pin foot, the first power supply pin foot connect one end of the first current-limiting resistance unit, the second electricity through first diode
Source pin foot through the second diode connect the second current-limiting resistance unit one end, the other end of the first current-limiting resistance unit with
The other end of the second current-limiting resistance unit connects, and connects the ground connection pin foot, first current-limiting resistance through LED series winding
The resistance of unit is greater than the second current-limiting resistance unit, and the first current-limiting resistance in the first current-limiting resistance unit is one or more
A, in parallel each other when having multiple, the second current-limiting resistance in the second current-limiting resistance unit is one or more, when having
In parallel each other when multiple, the LED string includes one or plurality of LEDs, is connected each other when for more.
When the electric interfaces structure of the LED bulb is equipped with 3 pin feet, the first power supply pin foot is Rear Position Lamp
Power supply pin foot, the second source pin foot are Brake lamp power supply pin foot.
Alternatively, the first power supply pin foot is daytime running lamps power supply pin foot, the second source pin foot is front position
Lamp power supply pin foot.
The design supply voltage of the power supply pin foot, the first power supply pin foot and second source pin foot is DC+12V.
The electric interfaces structure of the LED bulb can also be equipped with 3 pin feet, be ground connection pin foot, the first power supply respectively
Pin foot and second source pin foot, the first power supply pin foot are successively series-connected to the second triode TR2 through first diode D1, LED
Collector, the anode of first diode D1 connect with the first power supply pin foot, and the emitter of the second triode TR2 is limited through first
Leakage resistance unit is connected to ground connection pin foot, and the first power supply pin foot is simultaneously also through first capacitor C1 parallel with one another, the second capacitor
C2 and two-way TVS diode TVS1 is connected to ground connection pin foot, and the negative pole end of first diode D1 is successively through the second divider resistance
The base stage of R2, the 4th divider resistance R4 the second triode of connection TR2, the connection of the second divider resistance R2 and the 4th divider resistance R4
Point is connected to ground connection pin foot through the 6th capacitor C6, the 7th capacitor C7 and the first voltage-stabiliser tube Z1 parallel with one another, while being also connected with the
Successively circuit connection occurs for the collector of three triode TR3, second source pin foot to the three or three pole through pressure stabilizing current-limiting circuit, PWM
The base stage of pipe TR3, the emitter of third transistor TR3 are connected to ground connection pin foot.
The pressure stabilizing current-limiting circuit includes sequentially connected second diode D2, first resistor R1 and 3rd resistor R3, and
The input terminal of the just extremely described pressure stabilizing current-limiting circuit of two diode D2, connect with second source pin foot, the second diode D2's
Anode is also grounded pin foot through the C3 connection of third capacitor, and the other end of 3rd resistor R3 connects the base stage of the first triode TR1, together
When through the second voltage-stabiliser tube Z2 parallel with one another and the 5th capacitor C5 be connected to ground connection pin foot, the transmitting of the first triode TR1 is extremely
The output end of the pressure stabilizing current-limiting circuit, first resistor R1 and the tie point of 3rd resistor R3 connect the collection of the first triode TR1
Electrode, while also pin foot is grounded by the 4th capacitor C4 connection.
The beneficial effects of the present invention are:
The present invention becomes one LED light source and driving circuit part, passes through the power supply of pin foot connector and car running computer
End is directly electrically connected, if light source damages, directly replaces LED bulb, no replacement is required entire lamps and lanterns, therefore be obviously prolonged
The service life of entire lamps and lanterns.
Easy for installation due to connecting, user voluntarily can independently carry out the replacement of LED bulb, can according to need and voluntarily cut
Different size of current is changed to achieve the purpose that realize unlike signal lamp function, therefore not only eliminates the fiber crops that user replaces whole lamp
It is tired, it can be greatly saved use, the maintenance cost of lamps and lanterns, the freedom degree in user's use is improved, to improve the market of lamps and lanterns
Competitiveness.
LED light source and driving circuit are integrated and simple and convenient with the electrical connection of power supply, are conducive to meet main engine plants increasingly
It is increased to car light and the design requirement of flat and shallow more free posings.
Since LED light source is using the LED bulb of included driving, the company of light source and driving circuit and automobile electric control system
BCM realization was connected, automobile electric control system only needs to realize simple identification signal function, and entire circuit structure is more
Add simplification, functional reliability and stability all get a promotion.
Each circuit structure of the present invention is simple, and encapsulation is smaller, power consumption is lower, more efficient, and the operation is stable,
It is at low cost, keep LED bulb more stable and reliably work, and is suitable for being integrated in the needs of lamp holder.
Detailed description of the invention
Fig. 1 is the circuit diagram of one embodiment of the LED bulb single function application with driving of the invention；
Fig. 2 is the circuit diagram of one embodiment of the LED bulb multifunctional application with driving of the invention；
Fig. 3 is the circuit diagram of another embodiment of the LED bulb multifunctional application with driving of the invention；
Fig. 4 is the schematic diagram of one embodiment of the pressure stabilizing current-limiting circuit and PWM generation circuit in Fig. 3.
Specific embodiment
The invention discloses a kind of LED automobile lamps and lanterns, are equipped with lamp body and light source, and the light source is used with driving circuit
LED bulb, the lamp holder of the LED bulb are fixed on the lamp body, and LED is then located in the lamp chamber that lamp body surrounds, driving circuit
It is integrated in lamp holder.The LED bulb is directly electrically connected with car running computer, directly provides power supply by car running computer.
Junction is sealed using sealing ring between the lamp holder and lamp body of the LED bulb.The lamp holder and lamp of the LED bulb
Between body the dismounting of the LED bulb can be realized easily from lamp body outside using being threadedly coupled.
Radiator is also integrated in the lamp holder of the LED bulb, correspondingly, the LED bulb becomes collection light source, driving
Circuit, heat dissipation are in the functional unit of one.
The LED bulb is using the connection structure of 2-3 pin foot as electric interfaces structure.
Fig. 1 show one embodiment of the LED bulb single function application of band driving, at this time the LED bulb
Electric interfaces structure can be equipped with 2 pin feet, be to be grounded pin foot and power supply pin foot respectively, power supply pin foot and ground connection pin foot
Between be sequentially connected in series anti-reverse diode D3, current-limiting resistance unit and LED string, the current limliting electricity in the current-limiting resistance unit
Resistance is one or more, and in parallel each other when having multiple, example has tri- current limlitings parallel with one another of R12, R13 and R14 as shown in figure 1
Resistance, LED string includes one or plurality of LEDs, is connected each other when for more, example LED5, LED6, LED7 as shown in figure 1
The LED string is composed in series with LED8.Electric elements except the LED string form driving circuit, are integrated in the lamp of LED bulb
In seat.
The LED bulb is the LED bulb of unifunctional band driving when equipped with 2 pin feet, using resistance-type driving side
Formula, the feeder ear for being directly connected to car running computer can be driven, and not need to configure additional driving plate.Being shown in Fig. 1 will be of the invention
LED automobile lamps and lanterns be applied to Rear Position Lamp when embodiment.LED light source and driving circuit integrate and pass through connector directly with
Single function can be realized in the feeder ear TAIL+ connection of vehicle body, with traditional LED light source compared with isolated drive module scheme,
With high design freedom, different shaping demand can be met.If light source damages in use process, user can be easily
LED bulb is directly replaced, the trouble of whole lamp replacement is avoided, also eliminates corresponding maintenance cost.
Fig. 2 show one embodiment of the LED bulb multifunctional application of the band driving, at this time the LED bulb
Electric interfaces structure be equipped with 3 pin feet, be ground connection pin foot, the first power supply pin foot and second source pin foot respectively, first
The one end of power supply pin foot through first diode D4 connection the first current-limiting resistance unit, second source pin foot is through the second diode D5
Connect one end of the second current-limiting resistance unit, the other end of the first current-limiting resistance unit and the second current-limiting resistance unit
The other end connection, and through LED series winding connect the ground connection pin foot.The resistance of the first current-limiting resistance unit is greater than the second limit
Leakage resistance unit.The first current-limiting resistance in the first current-limiting resistance unit is one or more, mutual when having multiple
There are tri- current-limiting resistances parallel with one another of R15, R16 and R17 in parallel connection, such as Fig. 2, in the second current-limiting resistance unit
Two current-limiting resistances are one or more, in parallel each other when having multiple, such as have R18, R19 and R20 tri- in Fig. 2 mutually simultaneously
The current-limiting resistance of connection.LED string includes one or plurality of LEDs, is connected each other when for more, such as LED9 in Fig. 2,
LED10, LED11 and LED12 are composed in series the LED string.Equally, the electric elements except LED string form driving circuit, integrate
In the lamp holder of LED bulb.
The LED bulb is the LED bulb of multi-functional band driving when equipped with 3 pin feet, using resistance-type driving side
Two feeder ears that formula, the first power supply pin foot and second source pin foot are directly connected to car running computer respectively can be driven, and be not required to
Configure additional driving plate.It is that LED automobile lamps and lanterns of the invention are applied to Rear Position Lamp and brake lamp (braking shown in Fig. 2
Lamp) multiplexing embodiment.When the TAIL+ feeder ear of car running computer is powered to the first power supply pin foot, low-light level is presented in LED string
Mode, Rear Position Lamp works at this time；When car running computer, which switches to STOP+ feeder ear, powers to second source pin foot, LED string
High brightness mode is presented, is accordingly switching to brake lamp work.
The LED bulb driven using multi-functional band, LED light source and driving circuit are integrated and pass through connector directly and vehicle
Multiple feeder ears connection of body can be realized multi-functional, switch the size of driving current by controlling different pin feet and being powered, just
It can accordingly realize different signal lamp functions, with traditional LED light source compared with isolated drive module scheme, have high
Design freedom, different shaping demand can be met.If light source damages in use process, user easily can directly be replaced
LED bulb avoids the trouble of whole lamp replacement, also eliminates corresponding maintenance cost.
When the electric interfaces structure of the LED bulb is equipped with 3 pin feet, it is mainly used in the case where more lamps are multiplexed, it can
For headlight and back light.When being applied to above-mentioned back light, the first power supply pin foot is Rear Position Lamp power supply pin foot, described the
Two power supply pin feet are Brake lamp power supply pin foot.When being applied to headlight, the first power supply pin foot is daytime running lamps power supply
Pin foot, the second source pin foot are front position lamp power supply pin foot.
The design supply voltage of the power supply pin foot, the first power supply pin foot and second source pin foot is DC+12V, can be with
It is directly electrically connected with+12V power voltage supply the end of car running computer.
When multifunctional multiplexing, to switch to which signal lamp function is identified by signal recognition circuit first, then by driving a vehicle
Computer control switching, the output end of signal recognition circuit connect the input terminal of the car running computer.
Fig. 3,4 show band driving LED bulb multifunctional application second embodiment, LED in the embodiment
Light bulb not only carries driving circuit, and also included PWM dimming function, the circuit for driving and PWM is dimmed is integrated in lamp holder.
The electric interfaces structure of the LED bulb is equipped with 3 pin feet, is ground connection pin foot, the first power supply pin foot (or POWER respectively
Foot) and second source pin foot (or PWM foot).First power supply pin foot corresponds to LED linear constant-current drive circuit, the confession with light source
Power supply connection.Second source pin foot corresponds to PWM dimming function, connect with the power supply of pwm circuit.
Inside circuit, the first power supply pin foot is successively series-connected to the collection of the second triode TR2 through first diode D1, LED
Electrode, wherein the anode of first diode D1 is connect with the first power supply pin foot, and the emitter of the second triode TR2 is through the first limit
Leakage resistance unit (being composed in parallel by resistance R9 and R10) is connected to ground connection pin foot, and the first power supply pin foot is simultaneously also through mutually simultaneously
The first capacitor C1 of connection, the second capacitor C2 and two-way TVS diode TVS1 are connected to ground connection pin foot.First diode D1's
The negative pole end successively base stage through the second divider resistance R2, the 4th divider resistance R4 the second triode of connection TR2, the second divider resistance
The tie point of R2 and the 4th divider resistance R4 are through the 6th capacitor C6, the 7th capacitor C7 parallel with one another and the first voltage-stabiliser tube Z1 connection
To ground connection pin foot, while being also connected with the collector of third transistor TR3.Wherein LED string by LED1, LED2, LED3 series connection and
At the second triode TR2 and third transistor TR3 are NPN type triode, the positive terminal ground connection of the first voltage-stabiliser tube Z1.First
Voltage-stabiliser tube Z1 is used for the base voltage and emitter voltage of stabilized TR2.Resistance value by the way that resistance R9 and R10 is arranged can obtain
Desired LED current value, and guarantee that current value is basically unchanged in 9-16V, thus the brightness of LED will not with voltage change and
Variation.
Second source pin foot successively through pressure stabilizing current-limiting circuit, PWM occur circuit connection to third transistor TR3 base stage,
The emitter of third transistor TR3 is connected to ground connection pin foot.
The pressure stabilizing current-limiting circuit is mainly used for preventing the fluctuation of voltage, electric current, including sequentially connected second diode
The input terminal of the just extremely described pressure stabilizing current-limiting circuit of D2, first resistor R1 and 3rd resistor R3, the second diode D2, with second
The connection of power supply pin foot.The anode of second diode D2 is also grounded pin foot through the C3 connection of third capacitor.3rd resistor R3's is another
The base stage of the first triode TR1 of end connection, while ground connection is connected to through the second voltage-stabiliser tube Z2 parallel with one another and the 5th capacitor C5
Pin foot, wherein the anode of the second voltage-stabiliser tube Z2 is connect with ground connection pin foot.The extremely described pressure stabilizing limit of the transmitting of first triode TR1
The output end of current circuit.First resistor R1 connects the collector of the first triode TR1 with the tie point of 3rd resistor R3, simultaneously also
Pin foot is grounded by the 4th capacitor C4 connection.
As shown in figure 4, it includes NPN type triode A, NPN type triode B, the base stage 2 of triode A that circuit, which occurs, for the PWM
Capacitor C8 and C10 are parallel between the collector 3 of triode B, between the collector 6 of triode A and the base stage 5 of triode B
It is parallel with capacitor C9 and C11, the collector 3 of triode B, the base stage 2 of triode A, the base stage 5 of triode B and the collection of triode A
Electrode 6 is connect with one end of resistance R5, R6, R7 and R8 respectively, and resistance R5, R6, R7 are connected on one point with the other end of R8, and are made
It is connected for the PWM input terminal that circuit occurs with the emitter of the first triode TR1.The collector 6 of triode A is also connected with electricity
One end of R11 is hindered, the output end of circuit, the base stage with third transistor TR3 occur as the PWM for the other end of resistance R11
Connection.
The PWM generation circuit structure is simpler, works more stable and small in size, at low cost, is adapted for being integrated into lamp holder
Interior optimal circuit.In the present embodiment, it is preferred to use the double NPN compound transistor TR4 of common emitter substitute above-mentioned NPN type triode
A and NPN type triode B.
When needing 100% brightness, POWER foot need to only be powered on, PWM foot is hanging.When needing reduces brightness,
Then need for POWER foot and PWM foot to be both powered up (normal 9-16V is often electric).After circuit generation PWM waveform occurs for PWM, lead to
The resistance R11 for crossing PWM generation circuit is transmitted to the base stage of third transistor TR3, to control the on-off of TR3.The on-off of TR3 is again
The voltage change (such as jumping in 0V and 2.4V) on the first voltage-stabiliser tube Z1 is controlled, in Z1 pressure stabilizing in 2.4V, TR2 conducting,
LED operation, when Z1 jumps to 0V, TR2 is disconnected, and LED does not work；In this way, reaching the adjusting of LED luminance.
Occur in circuit in PWM, resistance R5-R8 is used to adjust the duty ratio of PWM, and capacitor C8-C11 is for adjusting PWM's
Frequency, the frequency-tuning range set in the present embodiment is 150HZ-300HZ.
By PWM circuit, which occurs, for the embodiment makes same LED string issue a variety of different brightness, to realize multiple functions
Multiplexing.Such as the conversion between brightness regulation realization brake lamp and two kinds of signal lamp functions of Rear Position Lamp can be passed through.It should
The duty ratio of pwm signal is minimum in embodiment is adjustable to 8%, and correspondingly the brightness of LED string is also close to 8%.
Claims (10)
1. a kind of LED automobile lamps and lanterns are equipped with lamp body and light source, it is characterised in that: the light source uses the LED light with driving circuit
Bubble, the lamp holder of the LED bulb are fixed on the lamp body, and LED is located in the lamp chamber that lamp body surrounds, and driving circuit is integrated in lamp
In seat.
2. LED automobile lamps and lanterns as described in claim 1, it is characterised in that: the lamp holder of the LED bulb and the junction of lamp body
It is sealed using sealing ring.
3. LED automobile lamps and lanterns as claimed in claim 2, it is characterised in that: the LED bulb is with the connection knot of 2-3 pin foot
Structure is electric interfaces structure.
4. LED automobile lamps and lanterns as claimed in claim 3, it is characterised in that: the electric interfaces structure of the LED bulb is equipped with 2
A pin foot is ground connection pin foot and power supply pin foot respectively, has been sequentially connected in series anti-reverse two between power supply pin foot and ground connection pin foot
Pole pipe (D3), current-limiting resistance unit and LED go here and there, and the current-limiting resistance in the current-limiting resistance unit is one or more, more when having
In parallel each other when a, the LED string includes one or plurality of LEDs, is connected each other when for more.
5. LED automobile lamps and lanterns as claimed in claim 3, it is characterised in that: the electric interfaces structure of the LED bulb is equipped with 3
A pin foot is ground connection pin foot, the first power supply pin foot and second source pin foot respectively, and the first power supply pin foot is through the one or two pole
One end that (D5) connects the first current-limiting resistance unit is managed, second source pin foot connects the second current limliting electricity through the second diode (D4)
One end of unit is hindered, the other end of the first current-limiting resistance unit is connect with the other end of the second current-limiting resistance unit,
And the ground connection pin foot is connect through LED series winding, the resistance of the first current-limiting resistance unit is greater than the second current-limiting resistance unit, institute
Stating the first current-limiting resistance in the first current-limiting resistance unit is one or more, in parallel each other when having multiple, described second
The second current-limiting resistance in current-limiting resistance unit is one or more, in parallel each other when having multiple, and the LED string includes one
Or plurality of LEDs, connect each other when for more.
6. LED automobile lamps and lanterns as claimed in claim 4, it is characterised in that: the first power supply pin foot is Rear Position Lamp power supply
Pin foot, the second source pin foot are Brake lamp power supply pin foot.
7. LED automobile lamps and lanterns as claimed in claim 4, it is characterised in that: the first power supply pin foot is daytime running lamps electricity
Source pin foot, the second source pin foot are front position lamp power supply pin foot.
8. the LED automobile lamps and lanterns as described in claim 4,5,7 or 8, it is characterised in that: the power supply pin foot, the first power supply
The design supply voltage of pin foot and second source pin foot is DC+12V.
9. LED automobile lamps and lanterns as claimed in claim 3, it is characterised in that: the electric interfaces structure of the LED bulb is equipped with 3
A pin foot is ground connection pin foot, the first power supply pin foot and second source pin foot respectively, and the first power supply pin foot is successively through first
Diode (D1), LED are series-connected to the collector of the second triode (TR2), anode and the first power supply of first diode (D1)
The emitter of the connection of pin foot, the second triode (TR2) is connected to ground connection pin foot, the first power supply through the first current-limiting resistance unit
Pin foot is also connected to through first capacitor (C1) parallel with one another, the second capacitor (C2) and two-way TVS diode (TVS1) simultaneously
It is grounded pin foot, the negative pole end of first diode (D1) is successively through the second divider resistance (R2), the 4th divider resistance (R4) connection the
The tie point of the base stage of two triodes (TR2), the second divider resistance (R2) and the 4th divider resistance (R4) is through parallel with one another
Six capacitors (C6), the 7th capacitor (C7) and the first voltage-stabiliser tube (Z1) are connected to ground connection pin foot, while being also connected with third transistor
(TR3) collector；Successively circuit connection occurs for second source pin foot to third transistor through pressure stabilizing current-limiting circuit, PWM
(TR3) base stage, the emitter of third transistor (TR3) are connected to ground connection pin foot.
10. LED automobile lamps and lanterns as claimed in claim 9, it is characterised in that: the pressure stabilizing current-limiting circuit includes sequentially connected
Second diode (D2), first resistor (R1) and 3rd resistor (R3), the just extremely described pressure stabilizing current limliting of the second diode (D2)
The input terminal of circuit is connect with second source pin foot, and the anode of the second diode (D2), which is also connected through third capacitor (C3), to be grounded
Pin foot, the base stage of the other end connection the first triode (TR1) of 3rd resistor (R3), while through the second pressure stabilizing parallel with one another
Pipe (Z2) and the 5th capacitor (C5) are connected to ground connection pin foot, the extremely described pressure stabilizing current-limiting circuit of the transmitting of the first triode (TR1)
Output end, first resistor (R1) connects the collector of the first triode (TR1) with the tie point of 3rd resistor (R3), simultaneously also
Ground connection pin foot is connected by the 4th capacitor (C4).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910639272.9A CN110186009A (en) | 2019-07-16 | 2019-07-16 | LED automobile lamps and lanterns |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910639272.9A CN110186009A (en) | 2019-07-16 | 2019-07-16 | LED automobile lamps and lanterns |
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| CN110186009A true CN110186009A (en) | 2019-08-30 |
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| CN201910639272.9A Pending CN110186009A (en) | 2019-07-16 | 2019-07-16 | LED automobile lamps and lanterns |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWM267402U (en) * | 2004-12-22 | 2005-06-11 | Chung-Luen Wang | Structure of bulb used in vehicle |
| CN107339660A (en) * | 2017-08-29 | 2017-11-10 | 佛山克莱汽车照明股份有限公司 | A kind of LED automobile bulb |
| CN206739009U (en) * | 2017-03-14 | 2017-12-12 | 佛山市祥鑫汽车用品有限公司 | A kind of autobulb |
| CN208606104U (en) * | 2018-07-23 | 2019-03-15 | 辽宁科技学院 | Intelligent dimming automobile headlamp bulb device |
| CN210088743U (en) * | 2019-07-16 | 2020-02-18 | 华域视觉科技(上海)有限公司 | LED automobile lamp |
-
2019
- 2019-07-16 CN CN201910639272.9A patent/CN110186009A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWM267402U (en) * | 2004-12-22 | 2005-06-11 | Chung-Luen Wang | Structure of bulb used in vehicle |
| CN206739009U (en) * | 2017-03-14 | 2017-12-12 | 佛山市祥鑫汽车用品有限公司 | A kind of autobulb |
| CN107339660A (en) * | 2017-08-29 | 2017-11-10 | 佛山克莱汽车照明股份有限公司 | A kind of LED automobile bulb |
| CN208606104U (en) * | 2018-07-23 | 2019-03-15 | 辽宁科技学院 | Intelligent dimming automobile headlamp bulb device |
| CN210088743U (en) * | 2019-07-16 | 2020-02-18 | 华域视觉科技(上海)有限公司 | LED automobile lamp |
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