Automobile front fog lamp with adjustable light color
By using three-color light group and PWM control technology in the front fog lights of the car, the problem of single light source and insufficient fog transmission ability of traditional car front fog lights is solved, smooth adjustment and switching of light and color are achieved, and the fog transmission ability and color rendering index are improved.
Patent Information
- Application Number
- CN202422093032.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-28
- Publication Date
- 2025-07-04
- Estimated Expiration
- 2034-08-28
AI Technical Summary
The traditional front fog light source can only emit one color, which cannot meet the needs of use under different smog states, and has poor fog transmission ability.
The three-color light group is adopted, including white, red and amber light group. The smooth adjustment and switching of light color is achieved through PWM control technology, and the red light group is added to improve the mist transmission capability, combined with CAN bus technology for easy control.
It realizes smooth adjustment and switching of light and color, improves fog transmission ability and color rendering index, and enhances the lighting effect in different haze states.
Smart Images
Figure CN223067235U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of automotive lamps, and particularly relates to an automotive front fog lamp with adjustable light color. Background Art
[0002] According to the GB4785 standard, the light color of automotive front fog lamps should be designed as white or selective yellow. Among them, white light is suitable for near-ground angle illumination in the state of no fog or light fog weather and the display of oncoming vehicles; yellow light is suitable for auxiliary illumination in the state of thick fog and as a signal lamp for oncoming vehicle display to prompt the oncoming vehicle. Traditional light sources (tungsten filament bulbs) can only emit one color, which cannot meet the use requirements in different fog states, and the fog penetration ability of traditional light sources is poor, and the propagation distance is short in the state of thick fog. Content of the Utility Model
[0003] The purpose of the utility model is to provide an automotive front fog lamp with adjustable light color, which can realize smooth adjustment and switching of the light color temperature, and improve the fog penetration ability and color rendering index of the light.
[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0005] The utility model provides an automotive front fog lamp with adjustable light color, including: a control board and a light source board; a power adapter, an LDO circuit, an MCU controller, a CAN bus transceiver, and a driving circuit for receiving the PWM control signal generated by the MCU controller to control a three-color lamp group are arranged on the control board; a three-color lamp group for generating mixed light is arranged on the light source board, and the three-color lamp group includes a white lamp group, a red lamp group, and an amber lamp group.
[0006] Optionally, the white lamp group is composed of a blue LED chip and a yellow phosphor, the amber lamp group is composed of a blue LED chip and an orange phosphor, and the red lamp group is composed of a red LED chip.
[0007] Optionally, an A / D converter is arranged on the control board, a temperature sensor is arranged on the light source board, the temperature sensor is connected to the A / D converter, and the A / D converter is connected to the MCU controller.
[0008] Optionally, the driving circuit includes three sub-driving circuits respectively for controlling the white lamp group, the red lamp group, and the amber lamp group; the sub-driving circuit includes a first chip, and the first chip includes a GND pin, a SW pin, a VIN pin, a BST pin, a DIM pin, a VCC pin, an RT pin, a PGND pin, and an FB pin. The SW pin and the BST pin are connected through a first resistor and a first capacitor, the SW pin and the GND pin are connected through a second resistor and a second capacitor, the GND pin is connected to the first end of a first capacitor group and grounded, the VIN pin is connected to the second end of the first capacitor group, the SW pin is sequentially connected with a first inductor, a second capacitor group, and a first resistor group, the first end of the first resistor group is grounded, the FB pin is connected to the first end of a third resistor, the second end of the third resistor is connected to the second end of the first resistor group, the VIN pin is used to be connected to the output end of the power adapter and the second end of the first capacitor group, the DIM pin is connected to the first end of a first resistor-capacitor combination, the second end of the first resistor-capacitor combination is grounded, the first end of a fourth resistor is connected to the first end of the first resistor-capacitor combination, the second end of the fourth resistor is connected to the MCU controller, the RT pin is connected to a fifth resistor and then grounded, the VCC pin is connected to a third capacitor and then grounded, and the PGND pin is grounded.
[0009] Optionally, the power adapter includes a fourth capacitor, a sixth resistor, a transient voltage suppressor, a diode, a fifth capacitor group, a second inductor, and a sixth capacitor group. The sixth resistor, the transient voltage suppressor, and the fourth capacitor are in parallel, the diode is in series with the fifth capacitor group and then in parallel with the transient voltage suppressor, and the second inductor is in series with the sixth capacitor group and then in parallel with the fifth capacitor group.
[0010] Optionally, the LDO circuit includes a second chip, and the second chip includes a VIN pin, a SHDN pin, a GND pin, an EP pin, and a VOUT pin. The VIN pin and the SHDN pin are connected and then connected to the first end of a third capacitor group, the second end of the third capacitor group is grounded, the first end of the third capacitor group is further connected to a second resistor group, the VOUT pin is connected to a fourth capacitor group, and the GND pin and the EP pin are grounded.
[0011] In the technical solution of the present utility model, by setting a three-color lamp group and controlling each lamp color group in the three-color lamp group by PWM control technology, the light of each lamp group in the three-color lamp group is mixed to obtain the required light color, realizing smooth adjustment of the light color and color temperature of the front fog lamp. Since a red lamp group is added to the three-color lamp group, the use of R9 supplementary light technology can obtain a fog penetration ability and color rendering index far higher than those of general light sources. By adopting the CAN bus technology, it is convenient to communicate with the human-machine interface and facilitate the control of the front fog lamp. Description of the Drawings
[0012] Figure 1 It is a schematic diagram of the hardware block diagram of an automobile front fog lamp with adjustable light color;
[0013] Figure 2 It is a schematic diagram of the circuit diagram of the first socket;
[0014] Figure 3 It is a schematic diagram of the circuit diagram of the power adapter;
[0015] Figure 4 It is a schematic diagram of the circuit diagram of the LDO circuit;
[0016] Figure 5 It is a schematic diagram of the circuit diagram of the sub-drive circuit for controlling the white lamp group;
[0017] Figure 6 It is a schematic diagram of the circuit diagram of the sub-drive circuit for controlling the red lamp group;
[0018] Figure 7 It is a schematic diagram of the circuit diagram of the sub-drive circuit for controlling the amber lamp group;
[0019] Figure 8 It is a schematic diagram of the circuit diagram of the CAN bus transceiver;
[0020] Figure 9 It is a schematic diagram of the circuit diagram of the MCU controller;
[0021] Figure 10 It is a schematic diagram of the circuit diagram of the second socket;
[0022] Figure 11 It is a schematic diagram of the circuit diagram of the clock circuit;
[0023] Figure 12 It is a schematic diagram of the circuit diagram of the third socket;
[0024] Figure 13 It is a schematic diagram of the circuit diagram of the fourth socket.
[0025] In the figure, 1 is the first jack; 2 is the power adapter; 3 is the LDO circuit; 4 is the sub-drive circuit; 5 is the CAN bus transceiver; 6 is the MCU controller; 7 is the third jack; 8 is the clock circuit; 9 is the second jack; 10 is the fourth jack; 21 is the fifth capacitor bank; 22 is the sixth capacitor bank; 23 is the second inductor; 24 is the diode; 25 is the switch; 26 is the transient voltage suppressor; 27 is the sixth resistor; 28 is the fourth capacitor; 31 is the second chip; 32 is the fourth capacitor bank; 33 is the third capacitor bank; 34 is the second resistor bank; 411 is the first chip; 412 is the first resistor; 413 is the first capacitor; 414 is the first inductor; 415 is the second capacitor bank; 416 is the bead; 417 is the first resistor bank; 418 is the third resistor; 419 is the third capacitor; 420 is the second resistor; 421 is the second capacitor; 422 is the first capacitor bank; 423 is the first resistor-capacitor combination; 424 is the fourth resistor; 425 is the fifth resistor. Detailed implementation manners
[0026] Here, the exemplary embodiments will be described in detail, and the examples are shown in the drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementation manners described in the following exemplary embodiments do not represent all the implementation manners consistent with the present invention. On the contrary, they are only examples of devices or methods consistent with some aspects of the present invention.
[0027] To make the purpose, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other implementation manners obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts belong to the scope protected by the present invention.
[0028] Hereinafter, the embodiments will be described with reference to the drawings. In addition, the embodiments shown below do not limit the content of the utility model described in the claims in any way. In addition, all the content of the configurations shown in the following embodiments is not necessarily required for the solution of the utility model described in the claims.
[0029] See Figures 1-13, the present utility model provides an automobile front fog lamp with adjustable light color, comprising: a control board and a light source board; a power adapter 2, an LDO circuit 3, an MCU controller 6, a CAN bus transceiver 5, and a driving circuit for receiving the PWM control signal generated by the MCU controller 6 to control the three-color lamp group are arranged on the control board; a three-color lamp group for generating mixed light is arranged on the light source board, the three-color lamp group includes a white lamp group, a red lamp group, and an amber lamp group, and a radiator is further arranged on the light source board.
[0030] The present utility model obtains the required light color by mixing and emitting light from the three-color lamp group including the white lamp group, the red lamp group, and the amber lamp group, generates a PWM control signal through the MCU controller to further control the driving circuit to control the three-color lamp group, and controls the brightness of each color lamp group through the duty cycle, so as to obtain the required light color and color temperature, realizing smooth adjustment and switching of the lamp color and color temperature. Since a red lamp group is arranged in the three-color lamp group, the mixed light can have a fog penetration ability and a color rendering index far higher than those of general light sources through the R9 supplementary lighting technology. The automobile front fog lamp with adjustable light color also adds a CAN bus transceiver and adopts CAN bus technology, which is convenient for communicating with the human-machine interface and facilitating the control of the front fog lamp.
[0031] Among them, the automobile power line and the CAN bus can be respectively connected to the power adapter 2, the LDO circuit 3, and the CAN bus transceiver 5 through the first socket 1. The power adapter 2 can prevent electromagnetic interference, crosstalk, and filter spikes, and supply power to each sub-driving circuit 4. The LDO circuit 3 outputs a stable 5V voltage to supply power to the MCU controller 6, the CAN bus transceiver 5, the A / D converter, etc. The output end of the sub-driving circuit 4 is connected to the three-color lamp group through the fourth socket 10. The clock circuit 8 is connected to the MCU controller 6, and a third socket 7 and a second socket 9 connected to the MCU controller 6 are further arranged on the control board.
[0032] Optionally, the white lamp group is composed of a blue LED chip and yellow fluorescent powder, the amber lamp group is composed of a blue LED chip and orange fluorescent powder, and the red lamp group is composed of red LED chips.
[0033] Using a blue LED chip and yellow fluorescent powder to form the white lamp group, a blue LED chip and orange fluorescent powder to form the amber lamp group, and red LED chips to form the red lamp group can make each lamp group have a larger luminous flux.
[0034] Optionally, an A / D converter is arranged on the control board, a temperature sensor is arranged on the light source board, the temperature sensor is connected to the A / D converter, and the A / D converter is connected to the MCU controller 6.
[0035] The temperature sensor can obtain the temperature of the three-color lamp group, and after being converted by the A / D converter, it is transmitted to the MCU controller 6, so that the temperature of the three-color lamp group can be monitored.
[0036] Optionally, the driving circuit includes three sub-driving circuits 4 respectively used to control the white lamp group, the red lamp group and the amber lamp group. See Figure 5 , and the sub-driving circuit 4 connected to the white lamp group is taken as an example for description. The sub-driving circuits 4 respectively connected to the red lamp group and the white lamp group are the same. The sub-driving circuit 4 includes a first chip 411. The first chip 411 includes a GND pin, a SW pin, a VIN pin, a BST pin, a DIM pin, a VCC pin, an RT pin, a PGND pin and an FB pin. The SW pin and the BST pin are connected through a first resistor 412 and a first capacitor 413. The SW pin and the GND pin are connected through a second resistor 420 and a second capacitor 421. The GND pin is connected to the first end of the first capacitor bank 422 and grounded. The VIN pin is connected to the second end of the first capacitor bank 422. The SW pin is successively connected with a first inductor 414, a second capacitor bank 415 and a first resistor bank 417. The first end of the first resistor bank 417 is grounded. The FB pin is connected to the first end of a third resistor 418. The second end of the third resistor 418 is connected to the second end of the first resistor bank 417. The VIN pin is used to be connected to the output end of the power adapter and the second end of the first capacitor bank 422. The DIM pin is connected to the first end of a first resistor-capacitor combination 423. The second end of the first resistor-capacitor combination 423 is grounded. The first end of a fourth resistor 424 is connected to the first end of the first resistor-capacitor combination 423. The second end of the fourth resistor 424 is connected to the MCU controller 6. The RT pin is connected to a fifth resistor 425 and then grounded. The VCC pin is connected to a third capacitor 419 and then grounded. The PGND pin is grounded.
[0037] Among them, the first capacitor bank 422 is composed of several parallel capacitors; the second capacitor bank 415 is composed of several parallel capacitors, Figure 5 in [reference figure] there are 5 capacitors, namely capacitor C6, capacitor C7, capacitor C8, capacitor C9, capacitor C10; the first resistor bank 417 is composed of several parallel resistors; the first resistor-capacitor combination 423 is composed of a resistor and a capacitor in parallel. The two ends of the second capacitor bank 415 are respectively used to connect the positive and negative poles of the white lamp group.
[0038] Specifically, the second capacitor bank 415 can also be connected with a bead 416. Specifically, it can be that a bead 416 is respectively connected in series on both sides of several parallel capacitors, and then is connected in parallel with several parallel capacitors. The two ends of the capacitor connected in series with the bead 416 are respectively used to connect the positive and negative poles of the white lamp group.
[0039] Optionally, seeFigure 3 , the power adapter 2 includes a fourth capacitor 28, a sixth resistor 27, a transient voltage suppressor 26, a diode 24, a fifth capacitor bank 21, a second inductor 23, a sixth capacitor bank 22. The sixth resistor 27, the transient voltage suppressor 26, and the fourth capacitor 28 are connected in parallel. The diode 24 is connected in series with the fifth capacitor bank 21 and then connected in parallel with the transient voltage suppressor 26. The second inductor 23 is connected in series with the sixth capacitor bank 22 and then connected in parallel with the fifth capacitor bank 21.
[0040] Among them, the fifth capacitor bank 21 is composed of several capacitors connected in parallel; the sixth capacitor bank 22 is composed of several capacitors connected in parallel. The diode 24 may also be connected in series with a switch 25.
[0041] Optionally, referring to Figure 4 , the LDO circuit 3 includes a second chip 31. The second chip 31 includes a VIN pin, a SHDN pin, a GND pin, an EP pin, and a VOUT pin. The VIN pin and the SHDN pin are connected and then connected to the first end of a third capacitor bank 33. The second end of the third capacitor bank 33 is grounded. A second resistor bank 34 is also connected to the first end of the third capacitor bank 33. The VOUT pin is connected to a fourth capacitor bank 32. The GND pin and the EP pin are grounded.
[0042] Among them, the third capacitor bank 33 is composed of several capacitors connected in parallel, and the fourth capacitor bank 32 is composed of several capacitors connected in parallel.
Claims
1. An automotive front fog lamp with adjustable light color, characterized in that, Comprising: A control board and a light source board; a power adapter (2), an LDO circuit (3), an MCU controller (6), a CAN bus transceiver (5) are arranged on the control board, and a driving circuit for receiving the PWM control signal generated by the MCU controller (6) to control a three-color lamp group; a three-color lamp group for generating mixed light is arranged on the light source board, and the three-color lamp group includes a white lamp group, a red lamp group and an amber lamp group.
2. The light color adjustable automotive front fog lamp according to claim 1, characterized in that, The white lamp group is composed of a blue LED chip and a yellow phosphor, the amber lamp group is composed of a blue LED chip and an orange phosphor, and the red lamp group is composed of red LED chips.
3. The vehicle front fog lamp with adjustable light color according to claim 1, characterized in that An A / D converter is arranged on the control board, a temperature sensor is arranged on the light source board, the temperature sensor is connected to the A / D converter, and the A / D converter is connected to the MCU controller (6).
4. The light color adjustable automotive front fog lamp according to claim 1, characterized in that, The driving circuit includes three sub-driving circuits (4) respectively for controlling the white lamp group, the red lamp group and the amber lamp group; the sub-driving circuit (4) includes a first chip (411), and the first chip (411) includes a GND pin, a SW pin, a VIN pin, a BST pin, a DIM pin, a VCC pin, an RT pin, a PGND pin and an FB pin. The SW pin and the BST pin are connected through a first resistor (412) and a first capacitor (413), the SW pin and the GND pin are connected through a second resistor (420) and a second capacitor (421), the GND pin is connected to the first end of a first capacitor group (422) and grounded, the VIN pin is connected to the second end of the first capacitor group (422), the SW pin is successively connected with a first inductor (414), a second capacitor group (415) and a first resistor group (417), the first end of the first resistor group (417) is grounded, the FB pin is connected to the first end of a third resistor (418), the second end of the third resistor (418) is connected to the second end of the first resistor group (417), the VIN pin is used for connecting to the output end of the power adapter and the second end of the first capacitor group (422), the DIM pin is connected to the first end of a first resistor-capacitor combination (423), the second end of the first resistor-capacitor combination (423) is grounded, the first end of a fourth resistor (424) is connected to the first end of the first resistor-capacitor combination (423), the second end of the fourth resistor (424) is connected to the MCU controller (6), the RT pin is connected to a fifth resistor (425) and then grounded, the VCC pin is connected to a third capacitor (419) and then grounded, and the PGND pin is grounded.
5. The light-color-adjustable automotive front fog lamp according to claim 1, characterized in that, The power adapter (2) includes a fourth capacitor (28), a sixth resistor (27), a transient voltage suppressor (26), a diode (24), a fifth capacitor bank (21), a second inductor (23), and a sixth capacitor bank (22). The sixth resistor (27), the transient voltage suppressor (26), and the fourth capacitor (28) are connected in parallel. The diode (24) is connected in series with the fifth capacitor bank (21) and then connected in parallel with the transient voltage suppressor (26). The second inductor (23) is connected in series with the sixth capacitor bank (22) and then connected in parallel with the fifth capacitor bank (21).
6. The light color adjustable automotive front fog lamp according to claim 1, wherein, The LDO circuit (3) includes a second chip (31). The second chip (31) includes a VIN pin, a SHDN pin, a GND pin, an EP pin, and a VOUT pin. The VIN pin and the SHDN pin are connected and then connected to the first end of a third capacitor bank (33). The second end of the third capacitor bank (33) is grounded. A second resistor bank (34) is also connected to the first end of the third capacitor bank (33). The VOUT pin is connected to a fourth capacitor bank (32). The GND pin and the EP pin are grounded.