CN111688571A - Lighting device capable of realizing free switching of high beam and low beam - Google Patents
Lighting device capable of realizing free switching of high beam and low beam Download PDFInfo
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- CN111688571A CN111688571A CN202010624688.6A CN202010624688A CN111688571A CN 111688571 A CN111688571 A CN 111688571A CN 202010624688 A CN202010624688 A CN 202010624688A CN 111688571 A CN111688571 A CN 111688571A
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- led lamp
- lamp bead
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- cathode
- lighting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
- B60Q1/02—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments
- B60Q1/04—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights
- B60Q1/14—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights having dimming means
- B60Q1/1415—Dimming circuits
- B60Q1/1423—Automatic dimming circuits, i.e. switching between high beam and low beam due to change of ambient light or light level in road traffic
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The invention relates to a lighting device, in particular to a lighting device capable of realizing free switching of high and low beams. According to the technical scheme provided by the invention, the lighting device capable of realizing free switching of the high beam and the low beam comprises a lighting lamp group; the switching judgment control circuit is connected with the constant current driving module, the constant current driving module is connected with the lighting lamp group, and the switching judgment control circuit can adjust the lighting power of each lamp bead in the lighting lamp group through the constant current driving module according to the switching information of the light state, so that the lighting state of the lighting lamp group corresponds to the switching information of the light state. The invention can effectively realize the free switching of the high beam and the low beam, can effectively adjust the irradiation range and the illumination distance after the switching, reduces the complexity of the circuit, has good adaptability, reduces the cost, and is safe and reliable.
Description
Technical Field
The invention relates to a lighting device, in particular to a lighting device capable of realizing free switching of high and low beams.
Background
In the field of lighting of engineering vehicle lamps, the vehicle lamp which can realize full-bright and half-bright switching of the lighting lamp and has higher cost performance is always short, and the technical price is not good enough. The prior engineering illumination car lamp known in the market has low illumination brightness, the light intensity is not changed when the lamp is half bright, the illumination range is only changed, the illumination distance is not greatly changed, the circuit design is too complex, and the cost is higher.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, provides the lighting device capable of realizing the switching of the high beam and the low beam only, has a compact structure, can effectively realize the free switching of the high beam and the low beam, can effectively adjust the irradiation range and the illumination distance after the switching, reduces the complexity of a circuit, has good adaptability, reduces the cost, and is safe and reliable.
According to the technical scheme provided by the invention, the lighting device capable of realizing free switching of the high beam and the low beam comprises a lighting lamp group; the switching judgment control circuit is connected with the constant current driving module, the constant current driving module is connected with the lighting lamp group, and the switching judgment control circuit can adjust the lighting power of each lamp bead in the lighting lamp group through the constant current driving module according to the switching information of the light state, so that the lighting state of the lighting lamp group corresponds to the switching information of the light state.
The switching judgment control circuit comprises a control circuit chip U1, and the control circuit chip U1 is a chip with the model number of AP 2400;
the MODE2 end of the control circuit chip U1 and the GND end of the control circuit chip U1 are grounded, the MODE1 end of the control circuit chip U1 is connected with one end of a resistor R6, the VDD end of the control circuit chip U1 is connected with one end of a capacitor C2 and one end of the resistor R1, the other end of the capacitor C2 is grounded, and the other end of the resistor R1 is connected with one end of a capacitor C1, the cathode end of a diode D1, the cathode end of a diode D2, the cathode end of a diode D4 and the cathode end of a diode D3;
the other end of the capacitor C1 is grounded, the anode end of the diode D1 is connected with the full-bright control end, the anode end of the diode D2 is connected with the half-bright control end, the other end of the resistor R6 and one end of the resistor R7, the other end of the resistor R7 is grounded, and the anode end of the diode D4 and the anode end of the diode D3 are connected with the lighting lamp group.
The constant current driving module comprises an NMOS tube Q1, the gate end of the NMOS tube Q1 is connected with the DR end of a control circuit chip U1, the source end of the NMOS tube Q1 is connected with the CS end of the control circuit chip U1, one end of a resistor R2, one end of a resistor R3, one end of a resistor R4 and one end of a resistor R5, the other end of a resistor R2, the other end of the resistor R3, the other end of a resistor R4 and the other end of the resistor R5 are grounded, and the drain end of the NMOS tube Q1 is connected with the anode end of a diode D4 and the anode end of a diode D3.
The drain terminal of the NMOS tube Q1 is connected with one end of an inductor L1, the saline-alkali soil of a diode D4 and the anode terminal of a diode D3, the other end of the inductor L1 is connected with the first end of the lighting lamp group, and the second end of the lighting lamp group is connected with the cathode terminal of a diode D3 and the cathode terminal of a diode D4.
The lighting lamp group comprises an LED lamp bead LD1, an LED lamp bead LD2, an LED lamp bead LD3, an LED lamp bead LD4 and an LED lamp bead LD 5;
an anode end of the LED lamp bead LD1, an anode end of the LED lamp bead LD2, an LED lamp bead LD3, an LED lamp bead LD4 and an LED lamp bead LD5 are connected with a cathode end of the diode D3 and a cathode end of the diode D4, a cathode end of the LED lamp bead LD1 is connected with an anode end of the LED lamp bead LD6, a cathode end of the LED lamp bead LD2 is connected with an anode end of the LED lamp bead LD7, a cathode end of the LED lamp bead LD3 is connected with an anode end of the LED lamp bead LD8, a cathode end of the LED lamp bead LD4 is connected with an anode end of the LED lamp bead LD9, a cathode end of the LED lamp bead LD5 is connected with an anode end of the LED lamp bead LD5, a cathode end of the LED lamp bead LD5 is connected with a cathode end of the LED lamp bead LD5, an anode end of the LED lamp bead LD5 is connected with a cathode end of the LED lamp bead LD5, and an anode end of the LED lamp bead LD5 are connected with a cathode end of the LED lamp bead LD5, and an anode end of the LED lamp bead LD5, The cathode end of the LED lamp bead LD12, the cathode end of the LED lamp bead LD13, the cathode end of the LED lamp bead LD14 and the cathode end of the LED lamp bead LD15 are connected with the other end of the inductor L1.
The invention has the advantages that: the switching judgment control circuit can adjust the lighting power of each lamp bead in the lighting lamp set through the constant current driving module according to the switching information of the light state, so that the lighting state of the lighting lamp set corresponds to the switching information of the light state, when the lighting lamp set is in a full-bright state or a half-bright state, the lighting power of a single lamp bead in the lighting lamp set is changed, but the number of the bright lamps in the lighting lamp set is not changed, thereby avoiding the circuit from being damaged due to overheating caused by overlarge current, being beneficial to the unified extension of the service life of the lamp beads in the lighting lamp set, expanding the lighting range of the half-bright mode without changing the lighting brightness, being the half-bright full-bright switching in the true sense, simultaneously reducing the product cost, being superior to the number of the changed bright lamp beads in the market to realize the full-bright half-bright function, and being safe.
Drawings
Fig. 1 is a schematic circuit diagram of the present invention.
Description of reference numerals: 1-full-bright control end, 2-half-bright control end and 3-power supply negative end.
Detailed Description
The invention is further illustrated by the following specific figures and examples.
In order to effectively realize free switching of the high beam and the low beam and effectively adjust the irradiation range and the illumination distance after switching, the invention comprises an illumination lamp group; the switching judgment control circuit is connected with the constant current driving module, the constant current driving module is connected with the lighting lamp group, and the switching judgment control circuit can adjust the lighting power of each lamp bead in the lighting lamp group through the constant current driving module according to the switching information of the light state, so that the lighting state of the lighting lamp group corresponds to the switching information of the light state.
Specifically, the illumination banks can adopt the illumination lamp that current machineshop car was used usually, and the particular case of illumination banks can be selected according to actual need, and it is no longer repeated here. The switching information of the light state can be received through the switching judgment control circuit, the switching information of the light state is specifically in a full-bright state and a half-bright state, after the switching information of the light state is received, the switching judgment control circuit can control the working state of the constant current driving module, and the lighting power of each lamp bead in the lighting lamp set can be adjusted through the constant current driving module, so that the lighting state of the lighting lamp set is in the full-bright state or the half-bright state.
Compared with the prior art, in the embodiment of the invention, when the lighting lamp group is in the full-bright state or the half-bright state, the lighting power of a single lamp bead in the lighting lamp group is changed instead of changing the number of the bright lamps in the lighting lamp group, so that the circuit can be prevented from being damaged due to overheating caused by overlarge current, the service life of the lamp beads in the lighting lamp group can be prolonged uniformly, the lighting range of the half-bright mode is expanded without changing the lighting brightness, half-bright full-bright switching is truly realized, the product cost is reduced, and the full-bright half-bright switching function is superior to the market mainstream mode in that the number of the bright lamp beads is changed to realize the full-bright half-bright function.
As shown in fig. 1, the switching judgment control circuit includes a control circuit chip U1, and the control circuit chip U1 is a chip with a model of AP 2400;
the MODE2 end of the control circuit chip U1 and the GND end of the control circuit chip U1 are grounded, the MODE1 end of the control circuit chip U1 is connected with one end of a resistor R6, the VDD end of the control circuit chip U1 is connected with one end of a capacitor C2 and one end of the resistor R1, the other end of the capacitor C2 is grounded, and the other end of the resistor R1 is connected with one end of a capacitor C1, the cathode end of a diode D1, the cathode end of a diode D2, the cathode end of a diode D4 and the cathode end of a diode D3;
the other end of the capacitor C1 is grounded, the anode end of the diode D1 is connected with the full-bright control end 1, the anode end of the diode D2 is connected with the semi-bright control end 2, the other end of the resistor R6 and one end of the resistor R7, the other end of the resistor R7 is grounded, and the anode end of the diode D4 and the anode end of the diode D3 are connected with the lighting lamp group.
Specifically, the control circuit chip U1 is a chip of the AP2400, the chip of the AP2400 can be obtained by outsourcing, and the power supply negative terminal 3 of the whole circuit is also grounded. The full-bright control end 1 and the half-bright control end 2 can receive switching information of external light states. The diode D1 and the diode D2 are reverse-connection-prevention diodes, and the reverse connection of the power supply can be prevented from damaging the circuit through the diode D1 and the diode D2. The MODE1 end of the control circuit chip U1 is grounded and has a moisture-proof function. Specifically, when the full-bright control terminal 1 loads the required direct current, the polar capacitor C1 stabilizes the voltage, the VDD port of the control circuit chip U1 samples the signal and determines that the signal is a full-bright signal, and the control circuit chip U1 outputs the full-bright on-off frequency through the constant current driving module to realize the full-bright state of the lighting lamp set. When the required direct current is loaded on the semi-bright control end 2, the VDD port of the control circuit chip U1 samples signals, the signals are judged to be semi-bright signals, and the control circuit chip U1 outputs semi-bright on-off frequency through the constant current driving module, so that the semi-bright function of the lighting lamp group is realized.
Further, the constant current driving module comprises an NMOS transistor Q1, a gate terminal of the NMOS transistor Q1 is connected to a DR terminal of the control circuit chip U1, a source terminal of the NMOS transistor Q1 is connected to a CS terminal of the control circuit chip U1, one terminal of the resistor R2, one terminal of the resistor R3, one terminal of the resistor R4, and one terminal of the resistor R5, the other terminal of the resistor R2, the other terminal of the resistor R3, the other terminal of the resistor R4, and the other terminal of the resistor R5 are grounded, and a drain terminal of the NMOS transistor Q1 is connected to an anode terminal of the diode D4 and an anode terminal of the diode D3.
In the embodiment of the invention, the NMOS tube Q1 has a large-current protection function, when the control circuit chip U1 judges that the signal is a full-bright signal or a half-bright signal, the control circuit chip U1 controls the conduction of the NMOS tube Q1, controls the on-off frequency of the lighting lamp set through the NMOS tube Q1, and can realize the modulation of a constant current value by adjusting the resistance values of the resistor R2, the resistor R3, the resistor R4 and the resistor R5 so as to match simulated lumen lamp beads with different powers, thereby having the function of a shunt protection circuit. The on-off frequency specifically refers to that the duty ratio is adjusted through the switching frequency of the NMOS tube Q1, and the adjustment switching of the half-bright state or the full-bright state of the lamp beads in the lighting lamp set is achieved.
Furthermore, the drain end of the NMOS transistor Q1 is connected to one end of the inductor L1, the saline-alkali soil of the diode D4, and the anode end of the diode D3, the other end of the inductor L1 is connected to the first end of the lighting lamp set, and the second end of the lighting lamp set is connected to the cathode end of the diode D3 and the cathode end of the diode D4.
In the embodiment of the invention, the inductor L1 realizes the optimization of voltage, so that discontinuous direct current voltage waves become continuous and stable, and stable working voltage is provided for the lighting lamp group.
Further, the lighting lamp group comprises an LED lamp bead LD1, an LED lamp bead LD2, an LED lamp bead LD3, an LED lamp bead LD4 and an LED lamp bead LD 5;
an anode end of the LED lamp bead LD1, an anode end of the LED lamp bead LD2, an LED lamp bead LD3, an LED lamp bead LD4 and an LED lamp bead LD5 are connected with a cathode end of the diode D3 and a cathode end of the diode D4, a cathode end of the LED lamp bead LD1 is connected with an anode end of the LED lamp bead LD6, a cathode end of the LED lamp bead LD2 is connected with an anode end of the LED lamp bead LD7, a cathode end of the LED lamp bead LD3 is connected with an anode end of the LED lamp bead LD8, a cathode end of the LED lamp bead LD4 is connected with an anode end of the LED lamp bead LD9, a cathode end of the LED lamp bead LD5 is connected with an anode end of the LED lamp bead LD5, a cathode end of the LED lamp bead LD5 is connected with a cathode end of the LED lamp bead LD5, an anode end of the LED lamp bead LD5 is connected with a cathode end of the LED lamp bead LD5, and an anode end of the LED lamp bead LD5 are connected with a cathode end of the LED lamp bead LD5, and an anode end of the LED lamp bead LD5, The cathode end of the LED lamp bead LD12, the cathode end of the LED lamp bead LD13, the cathode end of the LED lamp bead LD14 and the cathode end of the LED lamp bead LD15 are connected with the other end of the inductor L1.
In the embodiment of the invention, the LED lamp bead is a light emitting diode, the anode end of the LED lamp bead LD1, the anode end of the LED lamp bead LD2, the anode end of the LED lamp bead LD3, the anode end of the LED lamp bead LD4 and the anode end of the LED lamp bead LD5 are connected with each other to form a first end of the lighting lamp group, and the cathode end of the LED lamp bead LD11, the cathode end of the LED lamp bead LD12, the cathode end of the LED lamp bead LD13, the cathode end of the LED lamp bead LD14 and the cathode end of the LED lamp bead LD15 are connected with each other to form a second end of the lighting lamp group. During specific implementation, the number of the LED lamp beads in the lighting lamp set can be selected according to actual needs to meet the corresponding brightness needs, which are well known to those skilled in the art and are not repeated herein.
Claims (5)
1. A lighting device capable of realizing free switching of high and low beams comprises a lighting lamp group; the method is characterized in that: the switching judgment control circuit is connected with the constant current driving module, the constant current driving module is connected with the lighting lamp group, and the switching judgment control circuit can adjust the lighting power of each lamp bead in the lighting lamp group through the constant current driving module according to the switching information of the light state, so that the lighting state of the lighting lamp group corresponds to the switching information of the light state.
2. The lighting device capable of freely switching the high beam and the low beam as claimed in claim 1, wherein: the switching judgment control circuit comprises a control circuit chip U1, and the control circuit chip U1 is a chip with the model number of AP 2400;
the MODE2 end of the control circuit chip U1 and the GND end of the control circuit chip U1 are grounded, the MODE1 end of the control circuit chip U1 is connected with one end of a resistor R6, the VDD end of the control circuit chip U1 is connected with one end of a capacitor C2 and one end of the resistor R1, the other end of the capacitor C2 is grounded, and the other end of the resistor R1 is connected with one end of a capacitor C1, the cathode end of a diode D1, the cathode end of a diode D2, the cathode end of a diode D4 and the cathode end of a diode D3;
the other end of the capacitor C1 is grounded, the anode end of the diode D1 is connected with the full-bright control end (1), the anode end of the diode D2 is connected with the half-bright control end (2), the other end of the resistor R6 and one end of the resistor R7, the other end of the resistor R7 is grounded, and the anode end of the diode D4 and the anode end of the diode D3 are connected with the lighting lamp group.
3. The lighting device capable of freely switching the high beam and the low beam as claimed in claim 2, wherein: the constant current driving module comprises an NMOS tube Q1, the gate end of the NMOS tube Q1 is connected with the DR end of a control circuit chip U1, the source end of the NMOS tube Q1 is connected with the CS end of the control circuit chip U1, one end of a resistor R2, one end of a resistor R3, one end of a resistor R4 and one end of a resistor R5, the other end of a resistor R2, the other end of the resistor R3, the other end of a resistor R4 and the other end of the resistor R5 are grounded, and the drain end of the NMOS tube Q1 is connected with the anode end of a diode D4 and the anode end of a diode D3.
4. The lighting device capable of freely switching the high beam and the low beam as claimed in claim 3, wherein: the drain terminal of the NMOS tube Q1 is connected with one end of an inductor L1, the saline-alkali soil of a diode D4 and the anode terminal of a diode D3, the other end of the inductor L1 is connected with the first end of the lighting lamp group, and the second end of the lighting lamp group is connected with the cathode terminal of a diode D3 and the cathode terminal of a diode D4.
5. The lighting device capable of freely switching the high beam and the low beam as claimed in claim 4, wherein: the lighting lamp group comprises an LED lamp bead LD1, an LED lamp bead LD2, an LED lamp bead LD3, an LED lamp bead LD4 and an LED lamp bead LD 5;
an anode end of the LED lamp bead LD1, an anode end of the LED lamp bead LD2, an LED lamp bead LD3, an LED lamp bead LD4 and an LED lamp bead LD5 are connected with a cathode end of the diode D3 and a cathode end of the diode D4, a cathode end of the LED lamp bead LD1 is connected with an anode end of the LED lamp bead LD6, a cathode end of the LED lamp bead LD2 is connected with an anode end of the LED lamp bead LD7, a cathode end of the LED lamp bead LD3 is connected with an anode end of the LED lamp bead LD8, a cathode end of the LED lamp bead LD4 is connected with an anode end of the LED lamp bead LD9, a cathode end of the LED lamp bead LD5 is connected with an anode end of the LED lamp bead LD5, a cathode end of the LED lamp bead LD5 is connected with a cathode end of the LED lamp bead LD5, an anode end of the LED lamp bead LD5 is connected with a cathode end of the LED lamp bead LD5, and an anode end of the LED lamp bead LD5 are connected with a cathode end of the LED lamp bead LD5, and an anode end of the LED lamp bead LD5, The cathode end of the LED lamp bead LD12, the cathode end of the LED lamp bead LD13, the cathode end of the LED lamp bead LD14 and the cathode end of the LED lamp bead LD15 are connected with the other end of the inductor L1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010624688.6A CN111688571A (en) | 2020-07-02 | 2020-07-02 | Lighting device capable of realizing free switching of high beam and low beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010624688.6A CN111688571A (en) | 2020-07-02 | 2020-07-02 | Lighting device capable of realizing free switching of high beam and low beam |
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| Publication Number | Publication Date |
|---|---|
| CN111688571A true CN111688571A (en) | 2020-09-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010624688.6A Pending CN111688571A (en) | 2020-07-02 | 2020-07-02 | Lighting device capable of realizing free switching of high beam and low beam |
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| CN (1) | CN111688571A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114801976A (en) * | 2022-05-12 | 2022-07-29 | 东风柳州汽车有限公司 | Far and near light lamp control circuit |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070030138A1 (en) * | 2005-08-01 | 2007-02-08 | Koito Manufacturing Co., Ltd. | Lighting control apparatus for vehicle lamp |
| WO2011104492A1 (en) * | 2010-02-26 | 2011-09-01 | Asquith, Sandra Mcniell | Safety improvements to headlamps |
| CN203974665U (en) * | 2014-08-11 | 2014-12-03 | 杭州电子科技大学 | LED automobile front distance-light conversion control circuit |
| CN206136418U (en) * | 2016-08-30 | 2017-04-26 | 吴富双 | System for be used for switching on -vehicle lamp power |
| CN109318791A (en) * | 2017-08-01 | 2019-02-12 | 深圳市暗能量电源有限公司 | Distance-light integrated vehicle control system |
| CN110281839A (en) * | 2019-07-05 | 2019-09-27 | 台州学院 | A kind of automobile long-and-short distant light automatic control system based on Bluetooth technology |
-
2020
- 2020-07-02 CN CN202010624688.6A patent/CN111688571A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070030138A1 (en) * | 2005-08-01 | 2007-02-08 | Koito Manufacturing Co., Ltd. | Lighting control apparatus for vehicle lamp |
| WO2011104492A1 (en) * | 2010-02-26 | 2011-09-01 | Asquith, Sandra Mcniell | Safety improvements to headlamps |
| CN203974665U (en) * | 2014-08-11 | 2014-12-03 | 杭州电子科技大学 | LED automobile front distance-light conversion control circuit |
| CN206136418U (en) * | 2016-08-30 | 2017-04-26 | 吴富双 | System for be used for switching on -vehicle lamp power |
| CN109318791A (en) * | 2017-08-01 | 2019-02-12 | 深圳市暗能量电源有限公司 | Distance-light integrated vehicle control system |
| CN110281839A (en) * | 2019-07-05 | 2019-09-27 | 台州学院 | A kind of automobile long-and-short distant light automatic control system based on Bluetooth technology |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114801976A (en) * | 2022-05-12 | 2022-07-29 | 东风柳州汽车有限公司 | Far and near light lamp control circuit |
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Application publication date: 20200922 |
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