CN108575007A - The gradually dark gradually bright processing unit of the LED constant current circuit of shelves is gated based on indoor lamp - Google Patents
The gradually dark gradually bright processing unit of the LED constant current circuit of shelves is gated based on indoor lamp Download PDFInfo
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- CN108575007A CN108575007A CN201710140958.4A CN201710140958A CN108575007A CN 108575007 A CN108575007 A CN 108575007A CN 201710140958 A CN201710140958 A CN 201710140958A CN 108575007 A CN108575007 A CN 108575007A
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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
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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]
- H05B45/30—Driver circuits
- H05B45/37—Converter circuits
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
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- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The present invention relates to a kind of gradually dark gradually bright processing units of LED constant current circuit gating shelves based on indoor lamp, it includes input protection circuit, constant-current control circuit, indoor lamp LED and gate input voltage processing circuit；Input protection circuit is used to handle the interference of indoor lamp power level, and stable level is supplied to constant-current control circuit by treated；Constant-current control circuit is for gradually bright to indoor lamp LED, gradually power supply to be lighted in dark and constant current driving；Indoor lamp LED is used for interior reading lamp function；Input voltage processing circuit is gated for handling gate level, in gate effect, it is gradually dark to control indoor lamp LED at closing time for gate level control that treated, and control indoor lamp LED is gradually bright when enabling.The present invention using arrangement above due to that can make indoor lamp LED can constant current driving and the gradually bright and gradually dark requirement of satisfaction.In view of the above reason, automobile room lamp technical field present invention can be widely used to.
Description
Technical field
The present invention relates to automobile room lamp technical field more particularly to a kind of LED constant current electricity gating shelves based on indoor lamp
The gradually dark gradually bright processing unit on road.
Background technology
In recent years, the fast development of LED technology, by efficient, long lifespan, it is safe and environment-friendly etc. the advantages that, apply model
It encloses more and more extensively, especially in automobile lamp lighting area, receives industry favor.With the update of automobile, it is not only vapour
The vehicle of vehicle is more and more, and also type is various for the shape-designing of indoor lamp, because of the gate control function of indoor lamp, is closing the door and is opening the door
When, gradually dark and gradually bright process is needed, which has limited the type of drive of indoor lamp LED, and at present on the market, most of indoor lamps are all
It is the resistance type of drive used, this is simplest linear circuit, electric current linear change with the variation of voltage.But
It is well known that the driving of resistance-type, drive efficiency is not high, and when voltage fluctuation, and indoor lamp LED has light and shade variation, and common
Constant-current circuit can not meet that indoor lamp is gradually bright because of electric current constant current, gradually dark requirement.
Invention content
The technical problem to be solved by the present invention is to：When in order to solve gate effect in the prior art, it cannot meet at closing time
Gradually bright and common constant-current circuit drives drive efficiency when indoor lamp not high when gradually dark and enabling, and the problem of voltage fluctuation, this
A kind of gradually dark gradually bright processing unit of LED constant current circuit gating shelves based on indoor lamp of offer is invented to solve the above problems.
The technical solution adopted by the present invention to solve the technical problems is：A kind of LED constant current gating shelves based on indoor lamp
The gradually dark gradually bright processing unit of circuit, it is characterised in that：It include input protection circuit, constant-current control circuit, indoor lamp LED and
Gate input voltage processing circuit；Wherein, the input protection circuit input terminal connects indoor lamp power supply, and output end is separately connected
An input terminal and the indoor lamp LED for the constant-current control circuit, the output end of the gate input voltage processing circuit
Connect another input terminal of the constant-current control circuit；The input protection circuit is used to handle the dry of indoor lamp powered electromagnetic
It disturbs, and stable level is supplied to the constant-current control circuit by treated；The constant-current control circuit is used for the interior
Lamp LED is gradually bright, gradually power supply is lighted in dark and constant current driving；The indoor lamp LED is used for interior reading lamp function；The gate input
Voltage processing circuitry is for handling gate level, and gate level control that treated is in gate effect, at closing time described in control
Indoor lamp LED is gradually dark, and it is gradually bright that when enabling controls the indoor lamp LED.
The input protection circuit includes the first capacitance, Transient Suppression Diode, first resistor and diode；Wherein, institute
It states parallel connection, the output end of three between the first capacitance, the Transient Suppression Diode, the first resistor to be grounded jointly, three
EMC protection circuitry is formed, the input terminal of three connects the anode of the diode；The cathode of the diode is separately connected described
The input terminal of the input terminal of indoor lamp LE and the constant-current control circuit.
The constant-current control circuit includes second resistance, 3rd resistor, the 4th resistance, the second capacitance, zener diode,
Five resistance, third capacitance, NPN triode, the 7th resistance, the 8th resistance, the 9th resistance, the tenth resistance and indoor lamp switch；Its
In, one end of the second resistance connects the cathode of the diode, other end connection the 4th electricity of the second resistance
Resistance, the second resistance and the 4th resistance series connection partial pressure, the zener diode are connected in parallel on the 4th resistance both ends；Institute
It states the second capacitance and is connected in parallel on the zener diode both ends, second capacitance is for protecting the zener diode not by electromagnetism
Interference；The cathode of the zener diode connects one end of the 5th resistance, described in the other end connection of the 5th resistance
The Ji Ji of NPN triode, between the base stage and ground of the third capacitance NPN triode in parallel；The hair of the NPN triode
It penetrates collection and is separately connected one end of the 7th resistance, the 8th resistance, the 9th resistance, the tenth resistance, described the
The other end ground connection of seven resistance, the 8th resistance, the 9th resistance, the tenth resistance；The current collection of the NPN triode
Pole is connected with the indoor lamp LED；The indoor lamp switch is arranged between the second resistance and the 4th resistance, described
Indoor lamp switch includes the first connector, the second connector and third connector, and the third connector is sky, the interior
Second connector of lamp switch connects the second resistance, and first connector connects the 4th resistance；Described
Three resistance one end connect the output end of the gate input voltage processing circuit, and the other end connects described 5th resistance one end.
The indoor lamp includes light emitting diode and the 6th resistance, the light emitting diode the 6th resistance in parallel；Institute
The output end for stating indoor lamp LED connects the collector of the NPN triode, and the input terminal connection of the indoor lamp LED is described defeated
Enter to protect the output end of circuit.
The gate input voltage processing circuit includes eleventh resistor, PNP triode and twelfth resistor；Wherein, institute
The base base for stating PNP triode connects one end of the eleventh resistor, the other end connection gate level of the eleventh resistor；
The transmitting collection of the PNP triode connects indoor lamp power supply；The collector of the PNP triode is separately connected the 3rd resistor
One end and the twelfth resistor one end, the twelfth resistor the other end ground connection.
Include input protection circuit, constant-current control circuit, indoor lamp LED and door the beneficial effects of the invention are as follows the 1, present invention
Control input voltage processing circuit；Input protection circuit is used to handle the interference of indoor lamp powered electromagnetic, and will treated stablizes
Level is supplied to constant-current control circuit；Constant-current control circuit is for gradually bright to indoor lamp LED, gradually confession to be lighted in dark and constant current driving
Electricity；Indoor lamp LED is used for interior reading lamp function；Input voltage processing circuit is gated for handling gate level, treated
Level control is gated in gate effect, it is gradually dark to control indoor lamp LED at closing time, and control indoor lamp LED is gradually bright when enabling.This hair
It is bright due to that can make indoor lamp LED can constant current driving and the gradually bright and gradually dark requirement of satisfaction using arrangement above.2, originally
Relative to resistance-type driving circuit, drive efficiency is not high for invention, and most of energy all consumes on resistance, and with voltage liter
Height, electric current rise, and power rise is very big, but constant-current circuit, and as voltage increases, electric current is constant, and power does not have resistance-type
Greatly.In view of the above reason, automobile room lamp technical field present invention can be widely used to.
Description of the drawings
Present invention will be further explained below with reference to the attached drawings and examples.
Fig. 1 is Integral connection structure schematic diagram of the present invention under gating state；
Fig. 2 be the present invention gate effect under at closing time, the curent change situation schematic diagram of indoor lamp LED；
Fig. 3 be the present invention when non-gate acts on, the constant current varying circuit curve synoptic diagram of indoor lamp LED.
Specific implementation mode
In conjunction with the accompanying drawings, the present invention is further explained in detail.These attached drawings are simplified schematic diagram, only with
Illustration illustrates the basic structure of the present invention, therefore it only shows the composition relevant to the invention.
As shown in Figure 1, the present invention includes input protection circuit 100, constant-current control circuit 200, indoor lamp LED300 and door
Control input voltage processing circuit 400.
Wherein, 100 input terminal of input protection circuit connects indoor lamp power supply, and output end is separately connected constant-current control circuit
The output end of 200 input terminal and indoor lamp LED300, gate input voltage processing circuit 400 connects constant-current control circuit
200 another input terminal.
Input protection circuit 100 is used to handle the interference of indoor lamp powered electromagnetic, and stable level provides by treated
To constant-current control circuit 200；Constant-current control circuit 200 is for gradually bright to indoor lamp LED300, gradually confession to be lighted in dark and constant current driving
Electricity；Indoor lamp LED300 is used for interior reading lamp function；Input voltage processing circuit 400 is gated for handling gate level, place
In gate effect, it is gradually dark to control indoor lamp LED300 at closing time for gate level control after reason, and when enabling controls indoor lamp
LED300 is gradually bright.
Input protection circuit 100 is used to handle the interference of indoor lamp power level, and input terminal connects indoor lamp power supply, and
Indoor lamp power level V1 input high levels, input protection circuit 100 include the first capacitance C1, Transient Suppression Diode T1, the
One resistance R1 and diode D1.
Wherein, in parallel between the first capacitance C1, Transient Suppression Diode T1, first resistor R1, the output end of three is common
Ground connection, it is in parallel between the first capacitance C1, Transient Suppression Diode T1, first resistor R1 to form EMC protection circuitry, it is protected by EMC
After protection circuit, the anode of connection diode D1.The cathode of diode D1 is separately connected input terminal and the constant current of indoor lamp LED300
The input terminal of control circuit 200.
Any other form may be used in above-mentioned input protection circuit 100, only need to meet EMC requirement, only at vehicle body
It works in the case of electromagnetic interference, on the circuit of normal work without influence.It does not limit herein.
Constant-current control circuit 200 is for gradually bright to the indoor lamp LED300, gradually power supply, constant current to be lighted in dark and constant current driving
Control circuit 200 includes second resistance R2,3rd resistor R3, the 4th resistance R4, the second capacitance C2, zener diode D3, the 5th
Resistance R5, third capacitance C3, NPN triode Q3, the 7th resistance R7, the 8th resistance R8, the 9th resistance R9, the tenth resistance R10 and
Indoor lamp switch SW1.
Wherein, the cathode of one end connection diode D1 of second resistance R2, the 4th electricity of other end connection of second resistance R2
R4 is hindered, second resistance R2 and the 4th resistance R4 series connection partial pressures, zener diode D3 are connected in parallel on the 4th both ends resistance R4；Second capacitance
C2 is connected in parallel on the both ends zener diode D3, and the second capacitance C2 is for protecting zener diode D3 not by electromagnetic interference.Two pole of voltage stabilizing
The cathode of pipe D3 connects one end of the 5th resistance R5, the Ji Ji of the other end connection NPN triode Q3 of the 5th resistance R5, third electricity
Between the base stage and ground of holding C3 parallel connection NPN triodes Q3, make NPN triode Q3 not by electromagnetic interference.The transmitting of NPN triode Q3
Collection is separately connected one end of the 7th resistance R7, the 8th resistance R8, the 9th resistance R9, the tenth resistance R10, the 7th resistance R7, the 8th
The other end ground connection of resistance R8, the 9th resistance R9, the tenth resistance R10, the 7th resistance R7, the 8th resistance R8, the 9th resistance R9, the
Ten resistance R10 are power resistor, consume circuit power.The collector of NPN triode Q3 is connected with indoor lamp LED300.
In above-described embodiment, tetra- the 7th resistance R7, the 8th resistance R8, the 9th resistance R9, the tenth resistance R10 resistor coupled in parallel
Resistance value afterwards is sampling resistor, can adjust LED current size, because a resistor power is inadequate, needs four resistance
To disperse power.
Indoor lamp switch SW1 is arranged between second resistance R2 and the 4th resistance R4, and indoor lamp switch SW1 includes the first company
Interface 1, the second connector 2 and third connector 3, and third connector 3 is sky, the second connector 2 of indoor lamp switch SW1 connects
Second resistance R2 is met, the first connector 1 connects the 4th resistance R4.When the second connector 2 and the first connector 1 connect, constant current
Driving circuit 200 is connected.When the second connector 2 and third connector 3, constant-current drive circuit is closed.
The output end of the one end 3rd resistor R3 connection gate input voltage processing circuit 400, the other end connect the 5th resistance
The one end R5.
Indoor lamp LED300 is used for interior reading lamp function, and indoor lamp LED300 includes Light-emitting diode LED 1 and the 6th electricity
Hinder R6,1 the 6th resistance R6 of parallel connection of Light-emitting diode LED.The collector of the output connection NPN triode Q3 of indoor lamp LED300,
The output end of the input connection input protection circuit 100 of indoor lamp LED300.
Input voltage processing circuit 400 is gated for handling gate level V2 comprising tri- pole of eleventh resistor R11, PNP
Pipe Q1 and twelfth resistor R12.
Wherein, one end of the base base connection eleventh resistor R11 of PNP triode Q1, the other end of eleventh resistor R11 connect
Meet gate level V2；The transmitting collection connection indoor lamp power level V1 of PNP triode Q1；The collector of PNP triode Q1 is distinguished
Connect one end of one end and twelfth resistor R12 of 3rd resistor R3, the other end ground connection of twelfth resistor R12.
The level of one and gate level V2 reverse phases are obtained in the collector P1 points of PNP triode Q1：
When enabling, indoor lamp power level V1 is lower by height, after enabling, is maintained at low level, but indoor lamp is at this time
It opens, so we need a high level to go to open NPN triode Q3, removes the light-emitting diodes in control indoor lamp LED300
Pipe LED1 is lighted.
At closing time, indoor lamp power level V1 is got higher by low, after shutdown, is maintained at high level, but indoor lamp is at this time
It closes, so we need a low level to go to close NPN triode Q3, removes the light-emitting diodes in control indoor lamp LED300
Pipe LED1 extinguishes.
The voltage of one and incoming level reverse phase can be obtained by gating input voltage processing circuit 400, controls NPN tri-
The opening and closing of pole pipe Q3, to realize lighting and closing for the Light-emitting diode LED 1 in indoor lamp LED300.
When the present invention works：
(1) when the present invention is operated in gating state, when the second connector 2 and third connector 3 of indoor lamp switch SW1
Between be connected to：
11) at closing time：
Level V2 is gated by body control system input (this is the prior art, therefore is no longer described in detail), level is risen to by 0V
13.5V, P1 point voltage calculation：The voltage of PNP triode Q1 emitters is V1, and base voltage is V1-0.7V, base stage electricity
Stream is (V1-0.7V-V2)/R11, and collector current is β * (V1-0.7V-V2)/R11, and the voltage of P1 points is β * (V1-
0.7V-V2)*R12/R11.Because V1 constant is 13.5V, the voltage of P1 points is (12.8V-V2) * β * R12/R11.Setting
R12/R11=1/ β.Then the voltage of P1 points is 12.8V-V2.As can be seen that when V2 reduces, P1 point voltages increase, and V2 increases
When, P1 point voltages reduce.
P1 level and V2 reverse phases, the level of P1 points is used for controlling the opening and closing of NPN triode Q3, in control room
Light-emitting diode LED 1 lights and extinguishes in lamp LED300.
(setting of 3rd resistor R3 and the 4th resistance R4 resistance values is according to work for setting 3rd resistor R3 and the 4th resistance R4 resistance values
Make person works' experience, it is not described here in detail), it is 5.1V zener diodes to make zener diode D3, D3, is not exclusively opened, i.e.,
The voltage at the both ends zener diode D3 is less than voltage of voltage regulation 5.1V, at this point, the voltage at the both ends zener diode D3 has one with electric current
Close to the curve of linear change, the voltage linear with P1 points becomes smaller section, and the electric current on zener diode D3 is gradually reduced, voltage stabilizing
The voltage at the ends diode D3 is linearly become smaller by 5.1V-0V, is become smaller to the voltage linear of NPN triode Q3 emitters, because the
Seven resistance R7, the 8th resistance R8, the 9th resistance R9, the tenth resistance R10 resistance values are certain, then NPN triode Q3 emitter currents by
Gradual change is small, to make NPN triode Q3 collector currents taper into, that is, flows through the light emitting diode in indoor lamp LED300
LED1 electric currents linearly become smaller, as shown in Fig. 2, 1 brightness of Light-emitting diode LED is gradually dimmed, drive efficiency is high, to meet client
Requirement.
12) when opening the door：
When enabling, the course of work is with state at closing time completely on the contrary, therefore being no longer described in detail.
(2) when the present invention is operated in gating state, when the second connector 2 and the first connector 1 of indoor lamp switch SW1
Between be connected to：
Indoor lamp LED300 is opened at this time, is driven for constant current, as shown in figure 3, because vehicle body voltage is 9-16V, works as interior
When lamp power level V1 voltages reach 9V, second resistance R2 and the 4th resistance R4 resistance values (second resistance R2 and the 4th resistance are set
The setting of R4 resistance values is according to staff's working experience, and it is not described here in detail) at this point, the voltage on zener diode D3 is made to reach
5.1V, because zener diode D3 reaches burning voltage, when V1 continues to rise, zener diode D3 voltages can be stablized in 5.1V,
To NPN triode Q3 base voltages stabilization is sampled in 5.1V, emitter voltage Ub-0.7V=5.1V-0.7V=4.4V
Resistance：7th resistance R7, the 8th resistance R8, the 9th resistance R9, the tenth both ends resistance R10 voltage stabilization in 4.4V, flow through
Seven resistance R7, the 8th resistance R8, the 9th resistance R9, the electric current constant current of the tenth resistance R10 are constant, i.e., emitter current is constant, from
And make NPN triode Q3 collector currents constant, that is, 1 electric current of Light-emitting diode LED flowed through in indoor lamp LED300 is constant,
To realize 1 constant current of the Light-emitting diode LED driving of 9-16V operating voltages.
(3) when the present invention is not operate at gating state：
When indoor lamp LED300 is not operate at gating state, gate level V2 is hanging, is inputted without gate-control signal, gate
Input voltage processing circuit 400 does not work.
By indoor lamp switch SW1 press and bounce control indoor lamp LED300 lamps it is bright, go out：Indoor lamp switch
SW1 is pressed, i.e. the second interface 2 of indoor lamp switch SW1 is connect with first interface 1, at this point, indoor lamp LED300 is opened, it is indoor
Lamp LED300 is bright, has been described in detail in this process steps (2), so it will not be repeated.Indoor lamp switch SW1 is bounced, i.e. indoor lamp switch SW1
Second interface 2 connect with third interface 3, at this point, NPN triode Q3 bright control indoor lamp LED300 does not have voltage driving,
Indoor lamp LED300 goes out.
It is enlightenment with above-mentioned desirable embodiment according to the present invention, through the above description, relevant staff is complete
Various changes and amendments can be carried out without departing from the scope of the technological thought of the present invention' entirely.The technology of this invention
Property range is not limited to the contents of the specification, it is necessary to determine its technical scope according to right.
Claims (5)
1. a kind of gradually dark gradually bright processing unit of LED constant current circuit gating shelves based on indoor lamp, it is characterised in that：It includes defeated
Enter to protect circuit (100), constant-current control circuit (200), indoor lamp LED (300) and gate input voltage processing circuit (400)；
Wherein, input protection circuit (100) input terminal connects indoor lamp power supply, and output end is separately connected the current constant control
An input terminal and the indoor lamp LED (300) for circuit (200), the output of the gate input voltage processing circuit (400)
End connects another input terminal of the constant-current control circuit (200)；
The input protection circuit (100) is used to handle the interference of indoor lamp powered electromagnetic, and stable level carries by treated
Supply the constant-current control circuit (200)；The constant-current control circuit (200) for it is gradually bright to the indoor lamp LED (300),
Power supply is lighted in gradually dark and constant current driving；The indoor lamp LED (300) is used for interior reading lamp function；The gate input voltage
Processing circuit (400) is for handling gate level, and gate level control that treated is in gate effect, at closing time described in control
Indoor lamp LED (300) is gradually dark, and it is gradually bright that when enabling controls the indoor lamp LED (300).
2. the gradually dark gradually bright processing unit of the LED constant current circuit of shelves, feature are gated based on indoor lamp as described in claim 1
It is：The input protection circuit (100) include the first capacitance (C1), Transient Suppression Diode (T1), first resistor (R1) and
Diode (D1)；
Wherein, in parallel between first capacitance (C1), the Transient Suppression Diode (T1), the first resistor (R1), three
The output end of person is grounded jointly, and three forms EMC protection circuitry, and the input terminal of three connects the anode of the diode (D1)；
The cathode of the diode (D1) is separately connected the input terminal and the constant-current control circuit (200) of the indoor lamp LED (300)
Input terminal.
3. the gradually dark gradually bright processing unit of the LED constant current circuit of shelves, feature are gated based on indoor lamp as claimed in claim 2
It is：The constant-current control circuit (200) includes second resistance (R2), 3rd resistor (R3), the 4th resistance (R4), the second capacitance
(C2), zener diode (D3), the 5th resistance (R5), third capacitance (C3), NPN triode (Q3), the 7th resistance (R7), the 8th
Resistance (R8), the 9th resistance (R9), the tenth resistance (R10) and indoor lamp switch (SW1)；
Wherein, one end of the second resistance (R2) connects the cathode of the diode (D1), the second resistance (R2) it is another
One end connects the 4th resistance (R4), the second resistance (R2) and the 4th resistance (R4) series connection partial pressure, the voltage stabilizing
Diode (D3) is connected in parallel on the 4th resistance (R4) both ends；Second capacitance (C2) is connected in parallel on the zener diode (D3)
Both ends, second capacitance (C2) is for protecting the zener diode (D3) not by electromagnetic interference；The zener diode
(D3) cathode connects one end of the 5th resistance (R5), and the other end of the 5th resistance (R5) connects tri- poles NPN
The base stage of (Q3) is managed, between the base stage and ground of the third capacitance (C3) NPN triode (Q3) in parallel；Tri- poles the NPN
The transmitting collection of pipe (Q3) is separately connected the 7th resistance (R7), the 8th resistance (R8), the 9th resistance (R9), described
One end of tenth resistance (R10)；7th resistance (R7), the 8th resistance (R8), the 9th resistance (R9), described
The other end of ten resistance (R10) is grounded；The collector of the NPN triode (Q3) is connected with the indoor lamp LED (300)；Institute
It states indoor lamp switch (SW1) to be arranged between the second resistance (R2) and the 4th resistance (R4), the indoor lamp switch
(SW1) include the first connector (1), the second connector (2) and third connector (3), and the third connector (3) is sky,
Second connector (2) of the indoor lamp switch (SW1) connects the second resistance (R2), first connector (1)
Connect the 4th resistance (R4)；3rd resistor (R3) one end connection gate input voltage processing circuit (400)
Output end, 3rd resistor (R3) other end connect described 5th resistance (R5) one end.
4. the gradually dark gradually bright processing unit of the LED constant current circuit of shelves, feature are gated based on indoor lamp as claimed in claim 3
It is：The indoor lamp LED (300) includes light emitting diode (LED1) and the 6th resistance (R6), the light emitting diode
(LED1) the 6th resistance (R6) in parallel；The output end of the indoor lamp LED (300) connects the NPN triode (Q3)
Collector, the input terminal of the indoor lamp LED (300) connect the output end of the input protection circuit (100).
5. the gradually dark gradually bright processing unit of the LED constant current circuit of shelves, feature are gated based on indoor lamp as claimed in claim 4
It is：The gate input voltage processing circuit (400) includes eleventh resistor (R11), PNP triode (Q1) and the 12nd electricity
It hinders (R12)；
Wherein, the base base of the PNP triode (Q1) connects one end of the eleventh resistor (R11), the eleventh resistor
(R11) other end connection gate level (V2)；The transmitting collection of the PNP triode (Q1) connects indoor lamp power supply；The PNP
The collector of triode (Q1) is separately connected one end of one end and the twelfth resistor (R12) of the 3rd resistor (R3),
The other end of the twelfth resistor (R12) is grounded.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710140958.4A CN108575007A (en) | 2017-03-10 | 2017-03-10 | The gradually dark gradually bright processing unit of the LED constant current circuit of shelves is gated based on indoor lamp |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710140958.4A CN108575007A (en) | 2017-03-10 | 2017-03-10 | The gradually dark gradually bright processing unit of the LED constant current circuit of shelves is gated based on indoor lamp |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110225626A (en) * | 2019-07-09 | 2019-09-10 | 深圳南方德尔汽车电子有限公司 | A kind of indoor lamp for car controller and the vehicle with indoor lamp controller |
| US10548193B1 (en) | 2019-06-28 | 2020-01-28 | Haier Us Appliance Solutions, Inc. | Appliance illumination with zero standby power |
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| CN110225626B (en) * | 2019-07-09 | 2024-03-29 | 深圳南方德尔汽车电子有限公司 | Indoor lamp controller for vehicle and vehicle with indoor lamp controller |
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