Automobile lamp and demisting device thereof

Abstract

The invention relates to the field of automobile lamps, and provides an automobile lamp and a demisting device thereof, and the demisting device of the automobile lamp comprises a heating module arranged in an internal space, a demisting part and a discharging device arranged in a discharging through hole. The demisting part comprises a Peltier device and a liquid collecting device, the Peltier device is hermetically embedded in the mounting through hole, the Peltier device comprises a cold end and a hot end, the cold end extends into the internal space, and the hot end is located in the external space; the liquid collection device is disposed within the interior space and near the cold end of the Peltier device. One end of the discharging device is communicated with the liquid collecting device, and the discharging device is used for discharging liquid to the external space. The heating module evaporates the mist into water vapor; and the cold end liquefies the water vapor into liquid through cooling, so that the liquid collecting device collects the liquid, and the discharging device can discharge the liquid to the external space. The demisting device provided by the invention can be used for quickly demisting and quickly discharging internal water vapor to an external space.

Description

Technical Field

[0001] This application relates to the field of automotive lighting technology, and more particularly to an automotive lighting fixture and its defogging device. Background Technology

[0002] As crucial lighting and signaling devices for vehicles, automotive lights directly impact driving safety due to their light transmission performance. Modern automotive lights (especially LED lights) generally employ fully or semi-enclosed structures to achieve excellent sealing and waterproof / dustproof effects. However, in environments with large temperature differences between day and night and high humidity, water vapor in the air inside the light headlight can easily condense on the inner wall of the lens, forming fog or water droplets. This fogging significantly reduces the light transmittance of the headlight, weakening the light intensity and causing light scattering. This not only affects the aesthetics of the headlight but also poses a potential threat to driving safety at night or in inclement weather.

[0003] Currently, common solutions for defogging automotive headlights in the industry are mainly divided into two categories: passive and active. Passive methods typically involve setting vents or breathers on the headlight housing to balance internal and external pressure and humidity through air exchange. However, this method is slow to defog and may introduce more moisture when the external humidity is extremely high, failing to achieve fast and thorough defogging. In addition, simple vents may reduce the headlight's sealing rating, making it prone to clogging by dust and dirt after long-term use. Active methods often employ heating measures, such as arranging heating wires on the inner wall of the headlight housing or using PTC heating elements, to promote the evaporation of fog by increasing the internal temperature of the headlight. However, this method only evaporates the moisture back into a gaseous state and does not actually expel it from the headlight. Once the temperature drops, the moisture will condense again, providing only a temporary solution. At the same time, continuous heating also leads to additional energy consumption and may affect the heat dissipation and lifespan of surrounding headlight components. Summary of the Invention

[0004] This application provides an automotive headlight and its defogging device, which can improve the technical problem in related technologies that automotive headlights cannot quickly expel internal water vapor during the rapid defogging process.

[0005] In a first aspect, embodiments of this application provide a defogging device, wherein the automotive headlight has an exhaust port and an installation port, and the internal space of the automotive headlight is connected to the external space through the exhaust port and the installation port, respectively. The defogging device for the automotive headlight includes: The heating module is disposed on the inner wall of the internal space; The demisting section includes a Peltier device and a liquid collection device. The Peltier device is hermetically fitted into the mounting through-hole and includes a cold end and a hot end. The cold end extends into the internal space, and the hot end is located in the external space. The liquid collection device is disposed within the internal space and located near the cold end of the Peltier device. A discharge device is disposed in the discharge through hole, one end of which is connected to the liquid collection device. The discharge device is used to discharge liquid to the external space. The heating module is used to evaporate the mist in the internal space to form water vapor; the cold end is cooled so that the water vapor liquefies to form liquid, and the liquid collection device collects the liquid, so that the discharge device can discharge the liquid to the external space.

[0006] The technical solutions described in this application embodiment have at least the following technical effects: The defogging device for automotive headlights provided in this application embodiment accelerates the temperature rise of the internal space of the headlight by incorporating a heating module, thereby vaporizing the fog inside the headlight into water vapor. This solution accelerates the formation of water vapor from the fog, thus reducing the duration of fog's impact on the headlight's illumination function. Furthermore, by placing the cold end of the Peltier device within the headlight's internal space, the generated water vapor is concentrated on the cold end of the Peltier device and liquefied, further reducing the moisture content of the air inside the headlight. This solution prevents water vapor from re-forming into fog within the headlight, thereby improving driving safety. Additionally, the hot end of the Peltier device is positioned near the intake port, heating the air entering the headlight's internal space and reducing its moisture content. A liquid collection device facilitates the flow of liquid formed at the cold end of the Peltier device into the discharge device, allowing the liquid to exit from the internal space into the external space, thus preventing the liquid from affecting the normal operation of the headlight.

[0007] In some embodiments, the Peltier device further includes a condenser housing fitted over the cold end, and the liquid collection device includes: A collection component, movably mounted on the condenser housing, has two collection spaces, one located on the side of the collection component near the mounting through-hole, and the other located on the side of the collection component away from the mounting through-hole; the collection component is used to collect liquid on the condenser housing; and A flow guiding device, one end of which is connected to the collecting component and the other end of which is connected to the discharging device, has two flow guiding channels, which respectively connect the two collecting spaces to the discharging device; The collecting element is used to collect liquid on the condenser shell into two collecting spaces when the vehicle accelerates or decelerates, so that the liquid in the two collecting spaces enters the discharge device through the two guiding channels of the guiding device.

[0008] In some embodiments, the discharge device includes: A discharge body is disposed inside the vehicle headlight and located at the discharge through-hole. The discharge body has a liquid collection space and a discharge hole communicating with the liquid collection space. The liquid collection space is connected to the outlet of the guide device. A one-way valve is disposed in the discharge through hole and connected to the discharge hole; The liquid collection space is used to collect the liquid flowing in from the flow guiding device. When the liquid volume reaches a certain amount, the liquid flows into the one-way valve through the discharge hole and overcomes its opening pressure, causing the one-way valve to open and discharge the liquid to the external space.

[0009] In some embodiments, the liquid collection device further includes: A collection rod is disposed on the discharge body, and the collection rod is located within the liquid collection space; and A collecting fitting is movably mounted on the collecting fitting rod, and the collecting fitting is connected to the flow guiding device; The collecting fitting and the collecting fitting rod are used to restrict the movement direction of the flow guiding device so that the flow guiding device can only move along the axial direction of the collecting fitting rod.

[0010] In some embodiments, the vehicle headlight is further provided with an intake hole, and the internal space and the external space are connected through the intake hole; the defogging device also includes a heat dissipation section, which is disposed on the outer wall of the vehicle headlight, the air outlet of the heat dissipation section faces the hot end, and the air outlet of the heat dissipation section can blow hot air to the intake hole to reduce the moisture in the air entering the internal space.

[0011] In some embodiments, the defogging device further includes: An identification unit, disposed on the inner wall of the vehicle headlight, is used to identify whether fog has formed in the interior space; and A control unit, installed on the vehicle, is electrically connected to the identification unit, the Peltier device, and the heating module. The control unit is first used to control the heating module to work when the identification unit detects that there is fog in the internal space, so as to evaporate the fog in the internal space into water vapor and reduce the fog content to a preset range; the control unit is then used to control the Peltier device to work when the identification unit detects that the fog in the internal space has been reduced to within the preset range, so as to enable the defogging device to work normally.

[0012] In some embodiments, the condenser housing includes: A condenser body, sleeved on the cold end, is cylindrical in shape; the collector is movably disposed on the condenser body; and Two stoppers are respectively disposed at both ends of the condenser body, and the two stoppers are used to limit the movement range of the collecting element.

[0013] In some embodiments, the condenser housing further includes two heat insulation members disposed between the condenser body and the two stop members.

[0014] In some embodiments, the liquid collection device further includes a rubber component disposed between the collection component and the condenser body.

[0015] Secondly, embodiments of this application provide an automotive lamp, including: The headlight housing has an exhaust through hole, an installation through hole and an intake through hole; A headlight cover, wherein the headlight cover is detachably mounted on the headlight housing, and the headlight cover and the headlight housing form the internal space; The vehicle headlights include the vehicle headlight defogging device described in any of the embodiments of the first aspect above. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 A three-dimensional structural diagram of an automotive lamp provided in an embodiment of this application. Figure 1 ; Figure 2 A three-dimensional structural diagram of an automotive lamp provided in an embodiment of this application. Figure 2 ; Figure 3A three-dimensional structural diagram of an automotive lamp provided in an embodiment of this application. Figure 3 ; Figure 4 A front view structural diagram of an automotive lamp provided in an embodiment of this application; Figure 5 This is a three-dimensional structural diagram of the liquid collection device used in the embodiments of this application.

[0018] The following are the labeling elements in the figure: 100. Defogging device; 10. Heating module; 20. Demisting section; 21. Peltier device; 211. Cold end; 212. Hot end; 213. Condenser shell; 2131. Condenser body; 2132. Stopping element; 2133. Insulation element; 22. Liquid collection device; 221. Collection element; 2210. Collection space; 222. Flow guiding device; 2220. Flow guiding channel; 223. Collection mating rod; 224. Collection mating element; 225. Rubber part; 30. Discharge device; 31. Discharge body; 310. Liquid collection space; 311. Discharge hole; 32. One-way valve; 40. Heat dissipation section; 50. Automotive headlight; 500. Exhaust port; 501. Mounting port; 502. Intake port; 503. Internal space; 51. Headlight housing. Detailed Implementation

[0019] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application. The terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0021] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0022] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0023] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0024] In this application, "and / or" is merely a way of describing the relationship between related objects, indicating that three relationships can exist; for example, A and / or B can represent three cases: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0025] It should be noted that in this application, the words "in some embodiments," "exemplarily," and "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described in this application as "in some embodiments," "exemplarily," or "for example" should not be construed as being more preferred or advantageous than other embodiments or design solutions. Specifically, the use of words such as "in some embodiments," "exemplarily," and "for example" is intended to present related concepts in a specific manner, meaning that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of this application. The appearance of the above words in various places in the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment that is mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0026] As crucial lighting and signaling devices for vehicles, automotive lights directly impact driving safety due to their light transmission performance. Modern automotive lights (especially LED lights) generally employ fully or semi-enclosed structures to achieve excellent sealing and waterproof / dustproof effects. However, in environments with large temperature differences between day and night and high humidity, water vapor in the air inside the light headlight can easily condense on the inner wall of the lens, forming fog or water droplets. This fogging significantly reduces the light transmittance of the headlight, weakening the light intensity and causing light scattering. This not only affects the aesthetics of the headlight but also poses a potential threat to driving safety at night or in inclement weather.

[0027] Currently, common solutions for defogging automotive headlights in the industry are mainly divided into two categories: passive and active. Passive methods typically involve setting vents or breathers on the headlight housing to balance internal and external pressure and humidity through air exchange. However, this method is slow to defog and may introduce more moisture when the external humidity is extremely high, failing to achieve fast and thorough defogging. In addition, simple vents may reduce the headlight's sealing rating, making it prone to clogging by dust and dirt after long-term use. Active methods often employ heating measures, such as arranging heating wires on the inner wall of the headlight housing or using PTC heating elements, to promote the evaporation of fog by increasing the internal temperature of the headlight. However, this method only evaporates the moisture back into a gaseous state and does not actually expel it from the headlight. Once the temperature drops, the moisture will condense again, providing only a temporary solution. At the same time, continuous heating also leads to additional energy consumption and may affect the heat dissipation and lifespan of surrounding headlight components.

[0028] Based on this, in order to improve the problem that automotive headlights in related technologies cannot quickly expel internal moisture during the defogging process, the embodiments of this application provide the following solutions.

[0029] Please refer to the following: Figures 1 to 5 This application provides an automotive headlight and its defogger. The automotive headlight 50 has a discharge through-hole 500 and a mounting through-hole 501. The internal space 503 of the automotive headlight 50 is connected to the external space through the discharge through-hole 500 and the mounting through-hole 501. The defogger 100 of the automotive headlight 50 includes a heating module 10, a defogger 20, and a discharge device 30, wherein: The heating module 10 is located on the inner wall of the internal space 503.

[0030] The demisting unit 20 includes a Peltier device 21 and a liquid collection device 22. The Peltier device 21 is sealed and embedded in the mounting through hole 501. The Peltier device 21 includes a cold end 211 and a hot end 212. The cold end 211 extends into the internal space 503, and the hot end 212 is located in the external space. The liquid collection device 22 is disposed in the internal space 503 and is located near the cold end 211 of the Peltier device 21.

[0031] The discharge device 30 is disposed in the discharge through hole 500. One end of the discharge device 30 is connected to the liquid collection device 22. The discharge device 30 is used to discharge the liquid to the external space.

[0032] The heating module 10 is used to evaporate the mist in the internal space 503 to form water vapor; the cold end 211 is cooled so that the water vapor is liquefied to form liquid, and then the liquid collection device 22 collects the liquid, so that the discharge device 30 can discharge the liquid to the external space.

[0033] It is understood that the heating module 10 is a module used to heat the interior of the automotive headlight 50; for example, the heating module 10 can be an electric heating wire heater or a PTC (positive temperature coefficient) ceramic heater, etc. The Peltier device 21 is a device used to help water vapor liquefy into liquid; for example, the Peltier device 21 includes a thermoelectric cooler, a heat dissipation auxiliary component, and a condenser housing 213. The thermoelectric cooler is sealed within the mounting through-hole, the condenser housing 213 is connected to the cold end 211, and the heat dissipation auxiliary component is connected to the hot end 212. The liquid collection device 22 is a device used to collect the liquid liquefied on the Peltier device 21; for example, the liquid collection device 22 includes a collection component 221, a flow guide 222, a collection mating rod 223, a collection mating component 224, and a rubber component 225, etc. The discharge device 30 is a device used to discharge the liquid collected by the liquid collection device 22 into the internal space 503; for example, the discharge device 30 includes a discharge body 31 and a one-way valve 32, etc.

[0034] As can be seen from the above, the defogging device 100 provided in this application embodiment accelerates the temperature rise of the car headlight 50 by setting a heating module 10, thereby causing the fog inside to vaporize into water vapor. This solution accelerates the formation of water vapor from the fog, thus reducing the duration of fog's impact on the lighting function of the car headlight 50. Furthermore, by placing the cold end 211 of the Peltier device 21 inside the car headlight 50, the generated water vapor can concentrate on the cold end 211 of the Peltier device 21 and liquefy into liquid, thereby reducing the moisture content of the air inside the car headlight 50. This solution prevents water vapor from re-forming into water fog inside the car headlight 50, thus improving driving safety. Finally, the solution places the hot end 212 of the Peltier device 21 near the intake port 502, which heats the air entering the car headlight 50, thereby reducing the moisture content of the air entering the car headlight 50. By setting up a liquid collection device 22, the liquid formed at the cold end 211 of the Peltier device 21 can enter the discharge device 30, allowing the liquid to flow from the internal space 503 into the external space, thereby preventing the liquid from affecting the normal operation of the vehicle headlight 50. In the above solution, by placing the heating module 10 away from the headlight, the impact of the high temperature generated by the heating module 10 on the headlight is reduced.

[0035] In some embodiments, please refer to the following: Figures 1 to 5 The Peltier device 21 also includes a condenser housing 213, which is fitted onto the cold end 211. The liquid collection device 22 includes a collection element 221 and a flow guiding device 222, wherein: The collector 221 is movably disposed on the condenser housing 213. The collector 221 has two collection spaces 2210. One collection space 2210 is disposed on the side of the collector 221 close to the mounting through hole 501, and the other collection space 2210 is disposed on the side of the collector 221 away from the mounting through hole 501. The collector 221 is used to collect liquid on the condenser housing 213.

[0036] One end of the flow guiding device 222 is connected to the collection member 221, and the other end is connected to the discharge device 30. Two flow guiding channels 2220 are provided on the flow guiding device 222, and the two flow guiding channels 2220 respectively connect the two collection spaces 2210 to the discharge device 30.

[0037] The collector 221 is used to collect liquid on the condensate shell 213 into two collection spaces 2210 when the car accelerates or decelerates, so that the liquid in the two collection spaces 2210 enters the discharge device 30 through the two guide channels 2220 of the guide device 222.

[0038] It is understood that the condenser housing 213 is a component used to liquefy water vapor inside the automotive headlight 50 into liquid; for example, the condenser housing 213 can be a metal cylinder or a plastic cylinder. The collector 221 is a component used to collect the liquid on the surface of the condenser housing 213; for example, the collector 221 can be an annular metal block with collection spaces 2210, with two collection spaces 2210 disposed on both sides of the annular metal block having a plane. The guide device 222 is a device used to guide the collector 221 into the discharge device 30; for example, the guide device 222 can be a metal rod with a guide channel 2220 or a metal sheet with a guide channel 2220.

[0039] This configuration, by movably mounting the collector 221 onto the condenser housing 213, allows the collector 221 to move on the condenser housing 213 during vehicle acceleration or deceleration (the collector 221 can collect liquid on the condenser housing 213 due to inertia), thereby enabling the collector 221 to collect liquid into the collection space 2210. This solution utilizes the acceleration and deceleration process of the vehicle, saving the need for an additional power unit to drive the collector 221 on the condenser housing 213, thus simplifying the liquid collection device 22 and reducing its impact on the vehicle's headlights 50.

[0040] Optionally, in some embodiments, please refer to Figures 1 to 5 The discharge device 30 includes a discharge body 31 and a one-way valve 32, wherein: The discharge body 31 is located inside the car headlight 50 and at the discharge through hole 500. The discharge body 31 has a liquid collection space 310 and a discharge hole 311 that communicates with the liquid collection space 310. The liquid collection space 310 is connected to the outlet of the guide device 222.

[0041] A one-way valve 32 is disposed within the discharge port 500 and connected to the discharge port 311.

[0042] The liquid collection space 310 is used to collect the liquid flowing in from the guide device 222. When the liquid volume reaches a certain amount, the liquid flows into the one-way valve 32 through the discharge hole 311 and overcomes its opening pressure, causing the one-way valve 32 to open and discharge the liquid to the external space.

[0043] It can be understood that the discharge body 31 is a component used to assist liquid in entering the one-way valve 32; for example, the discharge body 31 can be a funnel-shaped metal part or a funnel-shaped plastic part, etc. The one-way valve 32 is a component used to discharge internal liquid or gas to the external space; for example, the one-way valve 32 can be a liquid one-way valve.

[0044] This configuration, by placing the discharge body 31 directly below the liquid collection device 22, allows the liquid collected by the liquid collection device 22 to enter the discharge body 31, and then allows all the liquid to enter the one-way valve 32. Due to the pressure of the liquid and the air pressure within the internal space 503, the one-way valve 32 is opened, allowing it to discharge the liquid to the external space. This design prevents the formed liquid from splashing onto other parts of the vehicle headlight 50 due to vehicle movement, thus preventing the liquid from affecting the headlight 50. The one-way valve 32 also prevents moisture-laden air from entering the vehicle headlight 50 through the discharge port 500. Furthermore, the one-way valve 32 retains a small amount of liquid in the discharge port 311 to prevent gas from entering the internal space 503 through the valve.

[0045] Optionally, please refer to Figures 1 to 5 The liquid collection device 22 also includes a collection mating rod 223 and a collection mating component 224, wherein: A collecting rod 223 is disposed on the discharge body 31 and is located within the collection space 310. A collecting fitting 224 is movably disposed on the collecting rod 223 and is connected to the flow guiding device 222. The collecting fitting 224 and the collecting rod 223 restrict the movement direction of the flow guiding device 222 so that the flow guiding device 222 can only move along the axial direction of the collecting rod 223.

[0046] It is understood that the collecting rod 223 is a component used to cooperate with the collecting fitting 224 to allow the collected liquid to enter the discharge device 30; for example, the collecting rod 223 can be a metal rod or a metal bar. For example, the collecting fitting 224 can be an annular metal ring.

[0047] This configuration, by placing the collecting rod 223 within the liquid collection space 310, prevents liquid from splashing onto other components of the automotive lamp 50, thereby preventing it from affecting the normal operation of the automotive lamp 50. By setting the collecting fitting 224 and the collecting rod 223, the movement of the flow guiding device 222 is restricted, allowing the flow guiding device 222 to move only along the axial direction of the collecting rod 223, thus preventing the flow guiding device 222 from rotating and damaging other components within the automotive lamp 50.

[0048] For example, please refer to Figures 1 to 5 The defogging device 100 also includes a heat dissipation unit 40, which is disposed on the outer wall of the vehicle headlight 50. The air outlet of the heat dissipation unit 40 faces the hot end 212, and the air outlet of the heat dissipation unit 40 can blow hot air to the intake through hole 502 to reduce the moisture in the air entering the interior space 503.

[0049] It is understood that the heat dissipation unit 40 is a component used to cool the hot end 212 of the Peltier device 21; for example, the heat dissipation unit 40 may be an axial fan or a small centrifugal fan.

[0050] With this configuration, the above solution can blow hot air from the air outlet of the heat dissipation unit 40 to the intake through-hole 502, thereby reducing the moisture content of the air entering the car headlight 50 through the intake through-hole 502.

[0051] In some embodiments, please refer to the figure. Figures 1 to 5 The defogging device 100 also includes an identification unit and a control unit, wherein: The identification unit is located on the inner wall of the vehicle headlight 50 and is used to identify whether fog has formed in the interior space 503. The control unit is located on the vehicle and is electrically connected to the identification unit, the Peltier device 21, and the heating module 10.

[0052] The control unit first controls the heating module 10 to work when the identification unit detects that there is fog in the internal space 503, so that the fog in the internal space 503 evaporates into water vapor, thereby reducing the fog content to a preset range; the control unit then controls the Peltier device 21 to work when the identification unit detects that the fog in the internal space 503 has been reduced to within the preset range, so that the defogging device 100 can work normally.

[0053] It is understood that the recognition unit is a component used to determine whether there is fog in the car headlight 50; for example, the recognition unit can be an image sensor or an optical sensor. The control unit is a component used to control the Peltier device 21 and the heating module 10 according to the fog condition in the car headlight 50; for example, the control unit can be a microcontroller (MCU), a single-chip microcomputer, or a PLC (programmable logic controller).

[0054] With this configuration, the above solution uses an identification unit to accurately determine the presence of fog inside the car headlights 50, and a control unit to receive the information identified by the identification unit and accurately control the Peltier device 21 and the heating module 10 based on the identified information.

[0055] Optionally, in some embodiments, please refer to Figures 1 to 5 The condenser housing 213 includes a condenser body 2131 and two stoppers 2132, wherein: The condenser body 2131 is fitted onto the cold end 211, and the condenser body 2131 is cylindrical in shape; the collector 221 is movably mounted on the condenser body 2131.

[0056] Two stoppers 2132 are respectively disposed at both ends of the condenser body 2131, and the two stoppers 2132 are used to limit the movement range of the collector 221.

[0057] It can be understood that the condenser body 2131 is a component used to assist the water vapor of the car headlight 50 in liquefying into liquid; for example, the condenser body 2131 can be a metal cylinder or a plastic cylinder, etc. The stop member 2132 is a component used to restrict the movement of the collecting member 221; for example, the stop member 2132 can be a metal block or a metal cylinder, etc.

[0058] With this configuration, two abutments 2132 are provided at each end of the condenser body 2131 to confine the collector 221 between the two abutments 2132. This design prevents the collector 221 from moving away from the condenser body 2131, thereby preventing the collector 221 from damaging other components of the vehicle headlight 50. In this design, the impact of the collector 221 with the two abutments 2132 also causes the condenser body 2131 to vibrate, which helps the liquid enter the discharge device 30.

[0059] Optionally, please refer to Figures 1 to 5 The condenser housing 213 also includes two heat insulation components 2133, which are disposed between the condenser body 2131 and the two stop components 2132.

[0060] It is understood that the heat insulation component 2133 is a component used to prevent water vapor from liquefying on the two abutment components 2132; for example, the heat insulation component 2133 may be an aerogel heat insulation pad or a ceramic fiber pad, etc.

[0061] This configuration, by providing a heat insulation component 2133 between the condenser body 2131 and the two stop components 2132, prevents the stop components 2132 from cooling down, thereby preventing water vapor inside the car headlight 50 from liquefying on the stop components 2132, and thus preventing liquid from splashing onto other parts of the car headlight 50.

[0062] In some embodiments, please refer to Figures 1 to 5 The liquid collection device 22 also includes a rubber component 225, which is disposed between the collection component 221 and the condensation body 2131.

[0063] It is understood that the rubber component 225 is a component used to assist in collecting liquid from the condensate body 2131; for example, the rubber component 225 may be a rubber ring.

[0064] With this configuration, the rubber component 225 in the above scheme can ensure that the liquid on the condenser body 2131 completely enters the discharge device 30.

[0065] This application embodiment also provides an automotive lamp 50, which includes a lamp housing 51 and a lamp cover, wherein: The headlight housing 51 has an exhaust through hole 500, an installation through hole 501, and an intake through hole 502.

[0066] The headlight cover is detachably mounted on the headlight housing 51, and the headlight cover and the headlight housing 51 form an internal space 503.

[0067] The vehicle headlight 50 includes the defogging device 100 of the vehicle headlight according to any of the above embodiments.

[0068] The headlight housing 51 is a component for providing an exhaust through-hole 500, a mounting through-hole 501, and an intake through-hole 502. The headlight lens is a component for forming an internal space 503 with the headlight housing 51.

[0069] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A defogging device for automotive headlights, characterized in that, The vehicle headlight has an exhaust port and an installation port. The internal space of the vehicle headlight is connected to the external space through the exhaust port and the installation port. The defogging device of the vehicle headlight includes: The heating module is disposed on the inner wall of the internal space; The demisting section includes a Peltier device and a liquid collection device. The Peltier device is hermetically fitted into the mounting through-hole and includes a cold end and a hot end. The cold end extends into the internal space, and the hot end is located in the external space. The liquid collection device is disposed within the internal space and located near the cold end of the Peltier device. A discharge device is disposed in the discharge through hole, one end of which is connected to the liquid collection device. The discharge device is used to discharge liquid to the external space. The heating module is used to evaporate the mist in the internal space to form water vapor; the cold end is cooled so that the water vapor liquefies to form liquid, and the liquid collection device collects the liquid, so that the discharge device can discharge the liquid to the external space.

2. The defogging device for automotive headlights as described in claim 1, characterized in that, The Peltier device further includes a condenser housing fitted over the cold end, and the liquid collection device includes: A collection component, movably mounted on the condenser housing, has two collection spaces, one located on the side of the collection component near the mounting through-hole, and the other located on the side of the collection component away from the mounting through-hole; the collection component is used to collect liquid on the condenser housing; and A flow guiding device, one end of which is connected to the collecting component and the other end of which is connected to the discharging device, has two flow guiding channels, which respectively connect the two collecting spaces to the discharging device; The collecting element is used to collect liquid on the condenser shell into two collecting spaces when the vehicle accelerates or decelerates, so that the liquid in the two collecting spaces enters the discharge device through the two guiding channels of the guiding device.

3. The defogging device for automotive headlights as described in claim 2, characterized in that, The discharge device includes: A discharge body is disposed inside the vehicle headlight and located at the discharge through-hole. The discharge body has a liquid collection space and a discharge hole communicating with the liquid collection space. The liquid collection space is connected to the outlet of the guide device. A one-way valve is disposed in the discharge through hole and connected to the discharge hole; The liquid collection space is used to collect the liquid flowing in from the flow guiding device. When the liquid volume reaches a certain amount, the liquid flows into the one-way valve through the discharge hole and overcomes its opening pressure, causing the one-way valve to open and discharge the liquid to the external space.

4. The defogging device for automotive headlights as described in claim 3, characterized in that, The liquid collection device further includes: A collection rod is disposed on the discharge body, and the collection rod is located within the liquid collection space; and A collecting fitting is movably mounted on the collecting fitting rod, and the collecting fitting is connected to the flow guiding device; The collecting fitting and the collecting fitting rod are used to restrict the movement direction of the flow guiding device so that the flow guiding device can only move along the axial direction of the collecting fitting rod.

5. The defogging device for automotive headlights as described in claim 1, characterized in that: The vehicle headlight is also provided with an intake hole, through which the internal space and the external space are connected; the defogging device also includes a heat dissipation unit, which is disposed on the outer wall of the vehicle headlight, with the air outlet of the heat dissipation unit facing the hot end, and the air outlet of the heat dissipation unit can blow hot air to the intake hole to reduce the moisture in the air entering the internal space.

6. The defogging device for automotive headlights as described in claim 1, characterized in that, The defogging device also includes: An identification unit, disposed on the inner wall of the vehicle headlight, is used to identify whether fog has formed in the interior space; and A control unit, installed on the vehicle, is electrically connected to the identification unit, the Peltier device, and the heating module. The control unit is first used to control the heating module to work when the identification unit detects that there is fog in the internal space, so as to evaporate the fog in the internal space into water vapor and reduce the fog content to a preset range; the control unit is then used to control the Peltier device to work when the identification unit detects that the fog in the internal space has been reduced to within the preset range, so as to enable the defogging device to work normally.

7. The defogging device for automotive headlights as described in claim 2, characterized in that, The condenser housing includes: A condenser body, sleeved on the cold end, is cylindrical in shape; the collector is movably disposed on the condenser body; and Two stoppers are respectively disposed at both ends of the condenser body, and the two stoppers are used to limit the movement range of the collecting element.

8. The defogging device for automotive headlights as described in claim 7, characterized in that: The condenser housing also includes two heat insulation components, which are disposed between the condenser body and the two stop components.

9. The defogging device for automotive headlights as described in claim 7, characterized in that: The liquid collection device also includes a rubber component, which is disposed between the collection component and the condensation body.

10. A type of automotive headlight, characterized in that, The vehicle lights include: The headlight housing has an exhaust through hole, an installation through hole and an intake through hole; A headlight cover, wherein the headlight cover is detachably mounted on the headlight housing, and the headlight cover and the headlight housing form the internal space; The defogging device for automotive headlights as described in any one of claims 1 to 9.

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