CN118009275A - Vehicle and demisting and heat dissipating method for lamp thereof and lamp - Google Patents
Vehicle and demisting and heat dissipating method for lamp thereof and lamp Download PDFInfo
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- CN118009275A CN118009275A CN202410158200.3A CN202410158200A CN118009275A CN 118009275 A CN118009275 A CN 118009275A CN 202410158200 A CN202410158200 A CN 202410158200A CN 118009275 A CN118009275 A CN 118009275A
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- 238000000034 method Methods 0.000 title claims abstract description 25
- 230000017525 heat dissipation Effects 0.000 claims description 18
- 238000007791 dehumidification Methods 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 4
- 238000010257 thawing Methods 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 5
- 241001465382 Physalis alkekengi Species 0.000 description 8
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 6
- 229910052782 aluminium Inorganic materials 0.000 description 6
- 238000004891 communication Methods 0.000 description 5
- 239000004065 semiconductor Substances 0.000 description 5
- 238000009423 ventilation Methods 0.000 description 5
- 230000007613 environmental effect Effects 0.000 description 4
- 230000005855 radiation Effects 0.000 description 4
- 238000009833 condensation Methods 0.000 description 3
- 230000005494 condensation Effects 0.000 description 3
- 239000003595 mist Substances 0.000 description 3
- 230000033228 biological regulation Effects 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 239000002274 desiccant Substances 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 230000002238 attenuated effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000013022 venting Methods 0.000 description 1
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- Lighting Device Outwards From Vehicle And Optical Signal (AREA)
Abstract
The invention relates to a vehicle, a defogging and radiating method of a lamp thereof and the lamp, which are used for judging the current working environment humidity of the lamp, and controlling a radiating fan to be started if the environment humidity meets a set condition; the lamp radiating structure for transmitting heat generated by the lamp to the air through heat exchange is arranged in an airflow channel formed by the radiating fan, and an outlet of the airflow channel faces the inside of the lamp so as to dehumidify the lamp by utilizing the heat generated by the lamp. According to the invention, the air flow channel outlet is oriented to the inside of the fan by combining the lamp radiating structure and the air flow channel, so that the fan dehumidifies the lamp by utilizing heat generated by the lamp, the cost is saved, and the problem that a defrosting and demisting system of the lamp in the prior art is poor in defrosting and demisting effect and unfavorable for driving safety is effectively solved.
Description
Technical Field
The invention relates to a vehicle, a demisting and radiating method for a lamp of the vehicle and the lamp, and belongs to the technical field of demisting and radiating of lamps.
Background
The maintenance of the brightness of a headlight as an important lighting system for a vehicle is of great importance for vehicles traveling at night or in overcast and rainy weather. Along with the development of LED lamps, LED headlamps are also becoming more popular, the brightness and environmental protection of the headlamps are guaranteed, but fog is very easy to generate when the headlamps work in overcast and rainy days or winter, the brightness of the headlamps can be directly influenced if the headlamps are not timely dissipated, the user experience is influenced, and hidden danger of driving safety exists. At present, the defogging mode of the headlamp mainly comprises a ventilation cover, a desiccant or an antifogging coating; however, with the development of headlamps, more and more decorative pieces and electronic components are integrated into the headlamps, conventional venting covers have failed to defog in time, and the desiccant and anti-fog coating fail after 2-3 years.
In order to solve the above problems, the chinese patent grant publication document with grant publication number CN210921257U provides a dehumidifying system for vehicle lamp and a vehicle lamp based on a single chip microcomputer, the dehumidifying system provided by the utility model comprises: the fan comprises a singlechip, a semiconductor condensing sheet, a fan, a first driving circuit for driving the semiconductor condensing sheet and a second driving circuit for driving the fan. Through setting up singlechip and semiconductor condensation piece for when the vehicle starts, the fan is closed after the time is preset with the work of semiconductor condensation piece, dehumidifies defogging, has good dehumidification defogging effect. However, due to the arrangement of the semiconductor condensing sheet and the related driving circuit, the temperature in the headlight is high during normal operation, the working environment is bad, and the condensing sheet and the driving circuit are easy to fail, so that the headlight assembly is more complicated to repair and replace, and the service life of the condensing sheet is generally only 3-5 years. Moreover, a large amount of heat can be generated in the working process of the LED headlight, so that in the working process of the headlight, the temperature of a condensing sheet is higher, and the condensation dehumidification efficiency is low at the moment, so that the scheme is only suitable for pre-dehumidification of the headlight when a vehicle is started, and in the long-time running process of the vehicle in daytime, cold and hot alternately generate fog in rainy and snowy weather, and at the moment, the scheme cannot effectively dehumidify, so that potential driving safety hazards are caused.
Disclosure of Invention
The invention aims to provide a vehicle, a demisting and radiating method for a lamp thereof and the lamp, which are used for solving the problems that a demisting system for the lamp in the prior art is poor in defrosting and demisting effects and is unfavorable for driving safety.
In order to achieve the above object, the present invention provides a method comprising:
According to the demisting and radiating method for the lamp, the current working environment humidity of the lamp is judged, and if the environment humidity meets the set condition, the radiating fan is controlled to be started; the lamp radiating structure for transmitting heat generated by the lamp to the air through heat exchange is arranged in an airflow channel formed by the radiating fan, and an outlet of the airflow channel faces the inside of the lamp so as to dehumidify the lamp by utilizing the heat generated by the lamp.
Further, the setting condition that the ambient humidity satisfies is that one or more of a rainfall signal, a wiper opening signal and a front windshield defrosting opening signal are detected.
Further, when the ambient humidity in a period of time after the lamp is dehumidified by using the heat generated by the lamp does not meet the set condition, the cooling fan is turned off for a set time delay.
Further, when the heat generated by the lamp is used for dehumidifying the lamp, the environmental humidity in a period of time does not meet the set condition, if the lamp is in an on state at this time, the radiator fan is turned off after continuously working for a first time, and if the lamp is in an off state, the radiator fan is turned off after continuously working for a second time, wherein the second time is longer than the first time.
Further, the working environment temperature of the lamp is also collected, and when the working environment temperature of the lamp is higher than a temperature threshold value, the cooling fan is controlled to be turned on to cool the lamp; and when the working environment temperature of the lamp is lower than a set value below a temperature threshold, controlling the cooling fan to be turned off.
Further, the value range of the temperature threshold is more than or equal to 25 ℃ and less than or equal to 50 ℃; the set point is 10 ℃ below the temperature threshold.
Further, when the heat radiation fan is turned on to radiate heat to the lamp, if a signal for turning off the lamp is detected, the heat radiation fan is controlled to be turned off.
The invention relates to a lamp, which comprises a lamp controller, a lamp radiating structure and a radiating fan, wherein the lamp radiating structure and the radiating fan are used for conducting heat generated by the lamp to air through heat exchange; the lamp controller comprises a memory and a processor, wherein the processor is used for executing the lamp defogging and heat dissipation method stored in the memory.
The vehicle comprises a lamp, wherein the lamp is the lamp.
The beneficial effects of the invention are as follows:
according to the invention, the heat dissipation structure of the existing lamp is improved, the working environment humidity is judged first, and the energy of an automobile is saved in a mode of controlling the fan to be turned on and off; and utilize the mode that lamps and lanterns heat radiation structure and air current passageway combined, with the air current passageway export towards the inside of fan for the heat that the fan utilized the lamps and lanterns to produce dehumidifies lamps and lanterns itself, has both saved the cost, has effectively solved the poor problem that is unfavorable for driving safety of defrosting defogging effect of lamps and lanterns defogging system among the prior art again.
Drawings
FIG. 1 is a schematic flow chart of a defogging and heat dissipating method for a head lamp according to the present invention;
FIG. 2 is a schematic view of the internal structure of the headlamp of the present invention;
FIG. 3 is a schematic view of the sensor location of the present invention.
The device comprises a 1-fan, a 2-air duct, a 3-ventilation structure, a 4-LED dipped headlight, a 5-LED high beam, a 6-rainfall humidity sensor, a 7-environment temperature sensor and an 8-headlamp.
Detailed Description
The invention is characterized in that the heat dissipation structure of the existing lamp is improved, the working environment humidity is judged, and the energy of the automobile is saved in a mode of controlling the fan to be switched on and off; and utilize the mode that lamps and lanterns heat radiation structure and air current passageway combined, with the air current passageway export towards the inside of fan for the heat that the fan utilized the lamps and lanterns to produce dehumidifies lamps and lanterns itself, has both saved the cost, has effectively solved the poor problem that is unfavorable for driving safety of defrosting defogging effect of lamps and lanterns defogging system among the prior art again.
The present invention will be further described in detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent.
The following embodiment uses a headlight as a lamp, a heat dissipation aluminum block as a lamp heat dissipation structure, an air duct as an air flow channel, t1 as a first time, t2 as a second time, a rainfall humidity sensor as a rainfall detection device, and an environmental temperature sensor as a temperature detection device to describe the invention in more detail.
It should be understood by those skilled in the art that most of the high beam lights of the vehicle are turned on when the low beam light is already turned on, and that the headlight is turned on when at least one of the low beam light and the high beam light is turned on, and that the headlight is turned off when both the low beam light and the high beam light are turned off.
An embodiment of a defogging and heat dissipating method for a headlamp comprises the following steps:
As shown in fig. 1, the flow chart of the defogging and heat dissipation method of the head lamp of the present invention is that a lamp controller (LDM) receives a rainfall humidity sensor signal, an ambient temperature sensor signal, a head lamp on/off signal, a wiper on/off signal, and a front windshield defrost on/off signal. The lamp controller is a CAN module, the rainfall humidity sensor 6 is in communication connection with the lamp controller through CAN or LIN, the ambient temperature sensor 7 is in communication connection with the lamp controller through CAN or LIN, the headlamp opening and closing signal is transmitted to the lamp controller through CAN or LIN communication, the windscreen wiper opening and closing signal is transmitted to the lamp controller through CAN or LIN communication, and the front windshield defrosting opening and closing signal is transmitted to the lamp controller through CAN or LIN communication. The lamp controller is also communicatively connected with an LED high beam and low beam lamp, and is also communicatively connected with a fan 1 (i.e. a radiator fan).
The vehicle is provided with a working temperature threshold T of the headlamp 8 according to the environment in which the vehicle is to work before leaving the factory, the settable range of the working environment temperature threshold T of the headlamp is more than or equal to 25 ℃ and less than or equal to 50 ℃, no matter whether the headlamp 8 (namely the LED combined headlamp) is turned on, when the working environment temperature of the headlamp is less than or equal to T, if the lamp controller does not receive a rainfall signal detected by the rainfall humidity sensor 6, a windscreen wiper on signal and a front windshield defrosting on signal, the lamp controller judges that the environment in which the headlamp 8 is positioned is drier and mist is not easy to generate, and at the moment, the lamp controller turns off the fan 1.
After the headlamp 8 is turned on, and when the operating environment temperature of the headlamp is less than or equal to T, if the lamp controller does not receive the rainfall signal detected by the rainfall humidity sensor 6, the windscreen wiper turning-on signal and the front windshield defrosting-on signal, the lamp controller judges that the current environment where the headlamp 8 is located is dry and mist is not easy to generate, and at the moment, the lamp controller turns off the fan 1.
After the headlamp 8 is turned on, and when the operating environment temperature of the headlamp is less than or equal to T, if the lamp controller receives one or more of the rainfall signal detected by the rainfall humidity sensor 6, the windscreen wiper turning-on signal and the front windshield defrosting-on signal, the lamp controller judges that the environment where the headlamp 8 is positioned is moist, mist is extremely easy to generate, and at the moment, the lamp controller controls the fan 1 to be turned on so as to achieve the purpose of defogging.
When the fan 1 is turned on for a period of time, if the lamp controller continuously receives the rainfall signal detected by the rainfall humidity sensor 6, the windscreen wiper turn-on signal and the front windshield defrost turn-on signal, the lamp controller determines that the vehicle is still in a humid environment, and the lamp controller controls the fan 1 to keep on.
When the fan 1 is turned on for a period of time, if the lamp controller continuously does not receive the rainfall signal detected by the rainfall humidity sensor 6, and meanwhile, the lamp controller receives the windscreen wiper closing signal and the front windshield defrosting closing signal, if the headlamp 8 keeps on, the fan 1 is continuously turned off after the time t1 is continuously operated, and if the headlamp 8 is in the off state, the fan 1 is continuously turned off after the time t2 is continuously operated. The time t1 and the time t2 are the areas of fog dissipated to the far and near light emitting surface area of the lamp, which are calibrated without affecting the national standard GB4599 optical regulation, and the heat of the heat dissipation aluminum block when the headlamp 8 is turned on is higher than that when the headlamp 8 is turned off, so that t2 is more than t1.
When the working environment temperature of the headlamp is larger than T, the lamp controller judges that the working environment temperature of the headlamp 8 is too high, and the brightness of the headlamp 8 is easy to be attenuated, so that the brightness is not in accordance with optical regulations or the headlamp is easy to damage due to the too high working environment temperature. At this time, the lamp controller controls the fan 1 to be turned on, and when the ambient temperature is lower than T-10 ℃ or the headlight 8 is turned off, the lamp controller controls the fan 1 to be turned off.
Wherein, after T-10 ℃ is the working environment temperature of the head lamp set before the delivery of the vehicle is too high, the fan 1 is turned off to obtain the highest threshold value of the working environment temperature of the head lamp.
An embodiment of a luminaire:
as shown in fig. 2, the interior structure of the headlight 8 (i.e., the LED combined headlight) provided by the present invention includes an LED dipped headlight 4, an LED high beam 5, a fan 1, a heat dissipation aluminum block, an air duct 2 and a ventilation structure 3, wherein the LED dipped headlight 4, the LED high beam 5 and the fan 1 are electrically connected to a lamp controller disposed in a vehicle central control, and a rainfall humidity sensor 6 and an ambient temperature sensor 7 shown in fig. 3 are also electrically connected to the lamp controller.
The lamp controller is used for receiving signals of the rainfall humidity sensor 6 and the environmental temperature sensor 7 and controlling the LED dipped headlight 4, the LED high beam 5 and the fan 1.
The air duct 1 is connected to the lower part of the heat dissipation aluminum block, the fan 1 blows to the heat dissipation aluminum block, and heat of the heat dissipation aluminum block is circulated to the whole lamp cavity through the air duct 1, so that the purposes of quick defogging and heat dissipation of the lamp are achieved. The ventilation structure 3 connects the inside and the outside of the head lamp 8 to accelerate the ventilation of the head lamp 8.
The lamp controller includes a memory and a processor, and the processor is configured to execute a method for implementing defogging and heat dissipation of a headlight stored in the memory, where the defogging and heat dissipation method of the headlight is described in detail in an embodiment of a defogging and heat dissipation method of the headlight, and will not be described again.
An embodiment of a vehicle:
the vehicle provided by the invention comprises a lamp, and the lamp is described in detail in the embodiment of the lamp and is not described in detail.
Claims (9)
1. A defogging and radiating method for a lamp is characterized by judging the current working environment humidity of the lamp, and if the environment humidity meets the set condition, controlling a radiating fan to be started; the lamp radiating structure for transmitting heat generated by the lamp to the air through heat exchange is arranged in an airflow channel formed by the radiating fan, and an outlet of the airflow channel faces the inside of the lamp so as to dehumidify the lamp by utilizing the heat generated by the lamp.
2. The method of claim 1, wherein the ambient humidity satisfies a set condition that one or more of a rain signal, a wiper on signal, and a front windshield defrost on signal is detected.
3. The method for demisting and radiating a lamp according to claim 2, wherein the radiator fan is turned off for a set time delay when the ambient humidity within a period of time after dehumidification of the lamp by heat generated by the lamp does not satisfy a set condition.
4. The method for demisting and radiating a lamp according to claim 3, wherein when the ambient humidity within a period of time after dehumidification of the lamp by using heat generated by the lamp does not meet a set condition, if the lamp is in an on state at this time, the radiator fan is turned off after continuously operating for a first time, and if the lamp is in an off state, the radiator fan is turned off after continuously operating for a second time, wherein the second time is longer than the first time.
5. The method for demisting and radiating a lamp according to any one of claims 1 to 4, further comprising collecting a lamp operating environment temperature, and controlling a radiator fan to be turned on to radiate heat to the lamp when the lamp operating environment temperature is higher than a temperature threshold; and when the working environment temperature of the lamp is lower than a set value below a temperature threshold, controlling the cooling fan to be turned off.
6. The method for demisting and radiating a lamp according to claim 5, wherein the range of the temperature threshold is 25 ℃ or more and 50 ℃ or less; the set point is 10 ℃ below the temperature threshold.
7. The method of claim 6, wherein when the heat dissipation fan is turned on to dissipate heat from the lamp, the heat dissipation fan is controlled to be turned off if a signal for turning off the lamp is detected.
8. The lamp is characterized by comprising a lamp controller, a lamp radiating structure and a radiating fan, wherein the lamp radiating structure is used for conducting heat generated by the lamp to air through heat exchange, the lamp radiating structure is arranged in an air flow channel formed by the radiating fan, and an outlet of the air flow channel faces to the inside of the lamp so as to dehumidify the lamp by utilizing the heat generated by the lamp; the lamp controller comprises a memory and a processor, wherein the processor is used for executing the lamp defogging and heat dissipation method stored in the memory according to any one of claims 1 to 8.
9. A vehicle comprising a light fixture, said light fixture being a light fixture as recited in claim 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410158200.3A CN118009275A (en) | 2024-02-04 | 2024-02-04 | Vehicle and demisting and heat dissipating method for lamp thereof and lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410158200.3A CN118009275A (en) | 2024-02-04 | 2024-02-04 | Vehicle and demisting and heat dissipating method for lamp thereof and lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN118009275A true CN118009275A (en) | 2024-05-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410158200.3A Pending CN118009275A (en) | 2024-02-04 | 2024-02-04 | Vehicle and demisting and heat dissipating method for lamp thereof and lamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN118009275A (en) |
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2024
- 2024-02-04 CN CN202410158200.3A patent/CN118009275A/en active Pending
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