Anti-fog device for vehicle lamp and vehicle lamp

Abstract

The utility model provides an anti-fogging device for a car lamp and the car lamp, the anti-fogging device comprises a shell, the shell comprises a first shell and a second shell, and an air hole of the car lamp is clamped between the first shell and the second shell; the humidity spring is arranged in the shell, the humidity spring comprises a first elastic section and a second elastic section, and the structures of the first elastic section and the second elastic section are straight lines; wherein a cover plate is connected to the end, close to the outside air, of the humidity spring, and the humidity spring opens or closes the cover plate by stretching out and drawing back. The humidity spring adopts the Z-shaped design with the optimized structure, so that the humidity spring has better stability and durability, and meanwhile, the manufacturing cost is low; the opening and closing of the silica gel cover plate are automatically adjusted by sensing the internal humidity change, so that the internal humidity and dew point temperature of the automobile lamp are adjusted and controlled, and the formation of fog is effectively controlled.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile lamps, in particular to an anti-fog device for automobile lamps and the automobile lamp. Background Art

[0002] With the rapid development of the automotive industry, automotive lighting technology has also been continuously advancing. Car lights have evolved from halogen lamps to xenon lamps, and now to the widespread use of LED lights, all to meet the growing demand for automotive safety, comfort, and environmental protection. LED lights are popular for their high brightness, low energy consumption, long lifespan, and wide range of color options. However, their complex and compact structure can restrict internal air circulation. This can cause condensation inside the lamps in cold regions or when the temperature fluctuates rapidly, forming fog, which can affect lighting performance and driving safety.

[0003] To address this issue, the industry has proposed several solutions: First, using desiccants such as magnesium oxide, silica gel, and mineral desiccants, as well as chemical desiccants such as magnesium chloride and calcium chloride, to absorb excess moisture inside the headlights and maintain a dry environment. Second, applying anti-fog coating technology. This coating, composed of surfactants, hydrophilic groups, and hydrophobic groups, absorbs moisture from the air and combines with the hydrophilic groups to form a water film, thereby preventing moisture from condensing into water droplets. Third, optimizing the internal hot runner design of the headlights. By utilizing the pressure differential created by the heat generated by the lighting, this promotes the exchange of air between the headlights and the outside air, quickly dissipating fog and maintaining clear lighting effects.

[0004] However, existing technologies for addressing the fogging problem in headlights still have potential drawbacks. Desiccant needs to be replaced regularly to maintain its effectiveness, and certain chemicals may pose safety risks. Anti-fog coatings have durability issues, are expensive, and have a complex application process. Internal hot runner optimization designs are complex, increasing energy consumption and having limited effectiveness in extreme environments. Utility Model Content

[0005] The utility model aims to provide a novel anti-fog device for a vehicle lamp and the vehicle lamp, thereby solving the above-mentioned problem.

[0006] To achieve the above-mentioned purpose, the utility model provides an anti-fog device for a vehicle lamp, comprising: a shell, the shell comprising a first shell and a second shell, and the air vent of the vehicle lamp is clamped between the first shell and the second shell; a humidity spring, the humidity spring is arranged inside the shell, the humidity spring comprises a first elastic section and a second elastic section, and the structure of the first elastic section and the second elastic section is a straight line; wherein, a cover is connected to the end of the humidity spring close to the outside air, and the humidity spring is opened or closed by stretching and contracting.

[0007] The utility model provides an anti-fog device for a headlight. The anti-fog device includes a housing composed of a first outer shell and a second outer shell. The air vent of the headlight is clamped between the first and second outer shells, forming a sealed space in the headlight. A humidity spring is installed inside the anti-fog device. The first and second elastic sections of the humidity spring are both straight lines, thereby ensuring that the humidity spring has good stability. A cover is connected to one end of the humidity spring to ensure that the humidity spring can expand and contract according to the humidity inside the anti-fog device, thereby enabling the humidity spring to open or close the cover, thereby reducing the humidity and dew point temperature inside the headlight and reducing the generation of fog. A Z-shaped humidity spring is used to control the humidity inside the headlight. Compared with ordinary humidity springs, the Z-shaped humidity spring has better stability, excellent elasticity, good durability, and lower manufacturing cost.

[0008] In any of the above technical solutions, one end of the humidity spring is fixedly connected to the cover plate, and the other end of the humidity spring is fixedly connected to the second shell.

[0009] By firmly connecting one end of the humidity spring to the cover and the other end to the secondary housing, the overall stability and anti-interference capabilities of the device are enhanced. This stable connection reduces operational errors caused by vibration or environmental influences, improving the reliability of the anti-fog device. The stable humidity spring structure enables more precise control of the cover's opening and closing, enabling more precise humidity regulation, which is crucial for maintaining an ideal humidity environment within the headlight.

[0010] In any of the above technical solutions, the anti-fog device is provided with a receiving groove to accommodate the wet spring, and the cover plate is provided with a convex wall that is interlocked with the receiving groove.

[0011] The anti-fog device features a receiving groove for the wet spring, and a raised wall on the cover. This interlocking design enhances the seal between the cover and the receiving groove, preventing moisture from entering the anti-fog device and, consequently, the headlight. The interlocking design of the raised wall and the receiving groove effectively reduces displacement or loosening caused by vibration or impact during vehicle operation.

[0012] In any of the above technical solutions, the housing includes: a clamping portion, and the plurality of clamping portions are provided on the surface of the first housing and protrude in a direction away from the surface of the first housing.

[0013] The clamping portion protrudes outward from the surface of the first housing, forming a protruding structure that increases the functionality and ease of use of the first housing. The protruding clamping portion assists in positioning during product installation, making the installation process easier and faster. It also provides additional convenience during maintenance or component replacement. The edge of the clamping portion facing away from the first housing can be designed as an arc-shaped structure, which not only enhances the overall appearance but also increases the operator's ease of handling.

[0014] In any of the above technical solutions, the shell includes: an annular wall, which protrudes along the circumferential direction of the shell and abuts against the peripheral wall of the air vent.

[0015] The housing includes an annular wall that protrudes along its circumference. The annular wall abuts against the peripheral walls of the air vents within the housing, providing both positioning during installation and increased installation stability. Specifically, the annular wall abuts against the peripheral walls of the air vents that are exposed to the outside world, ensuring the anti-fog device is properly positioned and, to a certain extent, preventing outside air from entering the interior of the headlight. The annular wall also enhances the overall structural strength of the housing, helping to resist external pressure or impact, particularly around the more fragile air vents.

[0016] In any of the above technical solutions, the housing includes: a clamping portion, and a plurality of clamping portions are provided on the surface of the second housing to detachably mount the anti-fog device on the vehicle lamp.

[0017] The surface of the second housing is designed with several snap-on features. These snap-on features can be raised latches, slots, or other engaging structures that mate with corresponding components of the anti-fog device, enabling detachable installation. This design allows the anti-fog device to be easily installed in the headlight and facilitates maintenance or replacement if the anti-fog device fails. The detachable design allows the user to regularly inspect and replace the anti-fog device, helping to maintain dryness inside the headlight and prevent damage or performance degradation caused by excessive humidity.

[0018] In any of the above technical solutions, the clamping portion protrudes in a direction away from the surface of the second shell, and the clamping portion is provided with a first end surface and a second end surface, and the inclination angle of the first end surface is greater than the inclination angle of the second end surface.

[0019] The mounting portion features a first end face and a second end face. The first end face has a larger inclination angle than the second end face. The larger inclination of the first end face facilitates smooth guidance and insertion of the anti-fog device, while the smaller inclination of the second end face effectively locks and stabilizes the device once fully inserted. This effective locking mechanism ensures the anti-fog device remains secure under various driving conditions, preventing malfunctions caused by vibration or collision. Furthermore, the different inclination angles allow users to install or remove the anti-fog device in a single direction, simplifying the process.

[0020] In any of the above technical solutions, the diameter of the second shell and the diameter of the air vent are adapted to each other.

[0021] By precisely matching the diameter of the second housing to the vent hole, we can prevent loose installation due to an overly large second housing diameter, or prevent installation problems due to an undersized second housing diameter. This dimensional match prevents outside air from entering the headlight through the assembly gap, reducing the buildup of moisture inside the headlight.

[0022] In any of the above technical solutions, the second shell is provided with a through hole for communicating with the internal space of the vehicle lamp.

[0023] Perforations are designed in the second housing to connect the housing to the interior of the lamp. This facilitates air circulation, effectively dissipating moisture and heat, preventing fogging caused by excessive humidity or bulb damage from overheating, thereby extending the lamp's lifespan. Moisture within the lamp enters the anti-fog device, where it is regulated by a desiccant and humidity spring, effectively reducing humidity and preventing fogging.

[0024] The utility model also provides a vehicle lamp, the air vents of which are equipped with the anti-fog device as described above.

[0025] The headlight provided by the present invention is equipped with the anti-fog device as described above, and the air vents of the headlight cooperate with the anti-fog device to form a closed space; the desiccant inside the drying part absorbs moisture inside the headlight, lowers the dew point temperature, and prevents the formation of fog; if the humidity inside the headlight is low enough, the humidity spring does not open the cover plate, preventing external moisture from entering the headlight; when the desiccant loses its effectiveness, external moisture enters the headlight through other gaps, and when the humidity inside the headlight reaches a certain level, the humidity spring will push open the cover plate, allowing the moisture inside the headlight to be discharged into the outside air, thereby reducing the humidity inside the headlight; after the desiccant loses its effectiveness, it can also be removed and replaced with a new anti-fog device that intelligently controls the humidity inside the headlight.

[0026] After adopting the technical solution of the utility model, the following technical effects can be achieved:

[0027] (1) Z-shaped humidity sensing spring: With an optimized Z-shaped design, the spring has better stability and durability, while also having a low manufacturing cost. By sensing changes in internal humidity, the spring automatically adjusts the opening and closing of the silicone cover, thereby regulating the humidity and dew point temperature inside the headlight, effectively controlling the formation of fog.

[0028] (2) Built-in desiccant: A desiccant is installed inside the headlight, mainly used to absorb moisture; even after the desiccant's effectiveness decreases, the Z-shaped humidity sensing spring can still maintain the appropriate humidity level to ensure stable performance of the headlight;

[0029] (3) Convenient maintenance and replacement: The anti-fog device is designed to be easy for users to disassemble and replace, making maintenance and updating of desiccant simple and quick, saving time and labor;

[0030] (4) Sealing function of the silicone cover: In addition to regulating the internal environment, the silicone cover can also prevent external impurities such as moisture and dust from invading the interior of the headlight, providing additional protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 A schematic structural diagram of an anti-fog device provided in an embodiment of the present utility model;

[0032] Figure 2 A top view of the anti-fog device provided in an embodiment of the utility model;

[0033] Figure 3 A bottom view of the anti-fog device provided in an embodiment of the utility model;

[0034] Figure 4 for Figure 2 Cross-sectional view in the AA direction;

[0035] Figure 5 for Figure 2 Cross-sectional view in the AA direction;

[0036] Figure 6 for Figure 4 A partial enlarged view of point B in the middle.

[0037] Description of reference numerals:

[0038] 100-housing; 110-first housing; 120-second housing; 121-perforation; 130-clamping portion; 140-annular wall; 150-clamping portion; 151-first end face; 152-second end face; 200-humidity spring; 210-first elastic section; 220-second elastic section; 300-cover plate; 310-convex wall; 400-accommodating groove. DETAILED DESCRIPTION

[0039] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0040] An embodiment of the present utility model provides an anti-fog device for a vehicle lamp, comprising: a housing 100, the housing 100 comprising a first housing 110 and a second housing 120, the air vent of the vehicle lamp being snap-connected between the first housing 110 and the second housing 120; a humidity spring 200, the humidity spring 200 being arranged inside the housing 100, the humidity spring 200 comprising a first elastic section 210 and a second elastic section 220, the structure of the first elastic section 210 and the second elastic section 220 being a straight line; wherein, a cover plate 300 is connected to the end of the humidity spring 200 close to the outside air, and the humidity spring 200 is extended and retracted to open or close the cover plate 300.

[0041] like Figure 1 and Figure 6 As shown, the present invention provides an anti-fog device for a vehicle lamp. The anti-fog device includes a housing 100 consisting of a first housing 110 and a second housing 120. The air vent of the vehicle lamp is clamped between the first housing 110 and the second housing 120, forming a sealed space in the vehicle lamp. A humidity spring 200 is installed inside the anti-fog device. The first elastic section 210 and the second elastic section 220 of the humidity spring 200 are both straight lines, thereby ensuring that the humidity spring 200 has good stability. A cover plate 300 is connected to one end of the humidity spring 200 to ensure that the humidity spring 200 can expand and contract according to the humidity inside the anti-fog device, thereby allowing the humidity spring 200 to open or close the cover plate 300, thereby reducing the humidity and dew point temperature inside the vehicle lamp and reducing the generation of fog. The Z-shaped humidity spring 200 is used to control the humidity inside the vehicle lamp. Compared with ordinary humidity springs 200, the Z-shaped humidity spring 200 has better stability, excellent elasticity, good durability, and lower manufacturing cost.

[0042] The anti-fog device installed in the headlight can automatically adjust according to the humidity changes inside the headlight without manual intervention, improving the convenience and practicality of use; using a simple spring and cover 300 mechanism to achieve humidity control, it reduces the complexity of the electronic control system, reduces costs and improves the reliability and maintainability of the system.

[0043] It should be noted that the housing 100 is surrounded by a drying section having a cavity structure. The drying section is provided around the housing 100. The cavity structure can be filled with a desiccant or utilizes specific materials to absorb or remove moisture through physical or chemical means. The cavity structure of the drying section is used to accommodate the desiccant, thereby absorbing moisture from within the headlight. To fully utilize the internal space of the anti-fog device, the interior of the clamping portion 130 or the clamping portion 150 can be configured as a cavity structure of the drying section, increasing the desiccant capacity and thereby extending the service life of the anti-fog device.

[0044] It should be noted that the surface of the housing 100 is provided with a sealing portion, which abuts against the vent. The sealing portion on the surface of the housing 100 may be made of a flexible or elastic material and is used to seal the vent. The sealing portion can be interlocked with the vent to prevent external moisture from entering the interior of the headlight, thereby improving the sealing performance of the headlight. Even in an environment with drastic changes in humidity or temperature, it can effectively protect internal components and reduce the generation of fog. In addition, the close fit between the sealing portion and the vent can ensure the accuracy and effectiveness of the adjustment of the humidity spring 200. On this basis, the sealing portion can also improve the stability of the anti-fog device assembly.

[0045] In some embodiments of the present application, one end of the humidity spring 200 is fixedly connected to the cover plate 300 , and the other end of the humidity spring 200 is fixedly connected to the second housing 120 .

[0046] like Figure 4 and Figure 5 As shown, by securely connecting one end of the humidity spring 200 to the cover plate 300 and the other end to the second housing 120, the stability and anti-interference capabilities of the entire device are enhanced. This stable connection reduces malfunctions caused by vibration or external environmental influences, improving the reliability of the anti-fog device. The stable structure of the humidity spring 200 enables more accurate control of the opening and closing of the cover plate 300, thereby achieving more precise humidity control, which is crucial for maintaining an ideal humidity environment within the headlight. Preferably, an adhesive is used to secure the humidity spring 200.

[0047] Furthermore, the first shell 110 is connected to a first top plate, which is arranged on a side close to the cover plate 300; the second shell 120 is connected to a second top plate, which is fixedly connected to the other end of the humidity spring 200 to keep the other end stationary; when the humidity inside the anti-fog device reaches a certain level, the humidity spring 200 will extend to push open the cover plate 300, thereby connecting the anti-fog device with the outside air, so that the moisture in the anti-fog device passes through the cover plate 300 to the position of the first top plate to be discharged to the outside, thereby reducing the humidity in the car light and avoiding the formation of fog.

[0048] In addition, the first top plate is arranged on the outside of the cover plate 300, and a breathable portion is provided on the first top plate. When the cover plate 300 is opened, air will pass through the opening of the cover plate 300 from the inside of the anti-fog device, and then reach the breathable portion of the first top plate, thereby achieving the discharge of moisture.

[0049] In some embodiments of the present application, the anti-fog device is provided with a receiving groove 400 to accommodate the wet spring, and the cover plate 300 is provided with a convex wall 310 that is interlocked with the receiving groove 400 .

[0050] like Figure 6As shown, the anti-fog device has a receiving groove 400 for accommodating the wet spring, and the cover plate 300 has a protruding wall 310. By interlocking the protruding wall 310 with the receiving groove 400, the connection between the cover plate 300 and the receiving groove 400 is enhanced to enhance the airtightness, preventing external moisture from entering the anti-fog device and, in turn, preventing moisture from reaching the headlight. The interlocking design of the protruding wall 310 and the receiving groove 400 effectively reduces displacement or loosening caused by vibration or impact during vehicle operation.

[0051] Preferably, the material of the convex wall 310 can be selected to be a silicone or rubber material with a certain elasticity to improve the sealing of the interlocking and reduce the leakage of air. The convex wall 310 can be a columnar structure, which can not only improve the stability of the structure, but also improve the ease of interlocking with the receiving groove 400.

[0052] In some embodiments of the present application, the housing 100 includes: a clamping portion 130 , wherein a plurality of clamping portions 130 are provided on the surface of the first housing 110 and protrude in a direction away from the surface of the first housing 110 .

[0053] like Figure 1 and Figure 2 As shown, the clamping portion 130 protrudes outward from the surface of the first housing 110, forming a protruding structure that increases the functionality and operational convenience of the first housing 110. The protruding clamping portion 130 assists in positioning during product installation, making the installation process easier and faster. It also provides additional convenience during maintenance or component replacement. The edge of the clamping portion 130 away from the first housing 110 can be designed as an arc-shaped structure, which not only improves the overall appearance but also increases the operator's ease of handling.

[0054] In some embodiments of the present application, the housing 100 includes an annular wall 140 , which protrudes along the circumferential direction of the housing 100 and abuts against the peripheral wall of the air vent.

[0055] like Figure 1 As shown, the housing 100 includes an annular wall 140 that protrudes along the circumference of the housing 100. The annular wall 140 abuts against the peripheral walls of the air vents provided in the housing 100, not only providing positioning during installation but also enhancing installation stability. Specifically, the annular wall 140 abuts against the peripheral walls of the air vents that are exposed to the outside world, thereby ensuring that the anti-fog device is properly installed and, to a certain extent, preventing outside air from entering the interior of the headlight. The annular wall 140 also enhances the overall structural strength of the housing 100, thereby helping to resist external pressure or impact, particularly around the more fragile air vents.

[0056] In some embodiments of the present application, the housing 100 includes: a clamping portion 150 , and a plurality of clamping portions 150 are provided on the surface of the second housing 120 to detachably mount the anti-fog device on the vehicle lamp.

[0057] like Figure 1 and Figure 3 As shown, the surface of the second housing 120 is designed with several snap-on parts 150. The snap-on parts 150 can be raised locks, slots, or other forms of engaging structures, which are used to cooperate with corresponding components of the anti-fog device to achieve detachable installation of the anti-fog device. This design allows the anti-fog device to be easily installed in the vehicle lamp and facilitates maintenance or replacement when the anti-fog device fails. The detachable design allows the user to regularly inspect and replace the anti-fog device, which helps to keep the interior of the vehicle lamp dry and prevent damage or performance degradation caused by excessive humidity.

[0058] In some embodiments of the present application, the clamping portion 150 protrudes in a direction away from the surface of the second shell 120 , and the clamping portion 150 is provided with a first end face 151 and a second end face 152 , and the inclination angle of the first end face 151 is greater than the inclination angle of the second end face 152 .

[0059] like Figure 1 As shown, the mounting portion 150 is provided with a first end face 151 and a second end face 152. By setting the inclination angle of the first end face 151 to be greater than that of the second end face 152, the larger inclination angle of the first end face 151 facilitates smooth guidance and insertion of the anti-fog device, while the smaller inclination angle of the second end face 152 helps to provide effective locking and stability after the anti-fog device is fully inserted. This effective locking mechanism ensures that the anti-fog device remains fixed under various driving conditions, avoiding malfunctions caused by vibration or collision. In addition, the different inclination angles allow users to install or remove the anti-fog device in only one direction, simplifying the operation steps.

[0060] In some embodiments of the present application, the diameter of the second housing 120 is adapted to the diameter of the vent hole.

[0061] By precisely matching the diameter of the second shell 120 with the diameter of the vent hole, loose installation due to an overly large diameter of the second shell 120 can be avoided, and installation failure due to an overly small diameter of the second shell 120 can also be avoided. The mutual adaptation of the sizes ensures that outside air does not enter the headlight through the assembly gap, reducing the generation of moisture inside the headlight. It should be noted that when an annular wall 140 or sealing rubber is provided between the first shell 110 and the second shell 120, there is no need to limit the size of the first shell 110. When no annular wall 140 or sealing rubber is provided between the first shell 110 and the second shell 120, the diameter of the first shell 110 needs to be larger than the diameter of the second shell 120 to ensure the stability and airtightness of the installation.

[0062] In some embodiments of the present application, the second housing 120 is provided with a through hole 121 for communicating with the inner space of the vehicle lamp.

[0063] like Figure 3 As shown, a perforation 121 is designed on the second shell 120, which enables the shell 100 to communicate with the internal space of the headlight. Air may leak into the interior of the headlight due to assembly gaps, or heat may be generated during operation. By providing the perforation 121 on the second shell 120, air circulation can be promoted, thereby effectively dissipating moisture or heat, preventing the formation of fog due to excessive humidity or damage to the bulb due to overheating, which is beneficial to extending the service life of the headlight. The moisture in the headlight is passed into the anti-fog device and is regulated by the desiccant and humidity spring 200 in the anti-fog device, effectively reducing the humidity in the headlight and preventing the formation of fog. Those skilled in the art can design the shape and number of the perforations 121 according to actual needs.

[0064] An embodiment of the present invention further provides a vehicle lamp, the air vents of which are equipped with the anti-fog device as described above.

[0065] The headlight provided by the present invention is equipped with the anti-fog device as described above, and the air vents of the headlight cooperate with the anti-fog device to form a closed space; the desiccant inside the drying part absorbs moisture inside the headlight, lowers the dew point temperature, and prevents the formation of fog; if the humidity inside the headlight is low enough, the humidity spring 200 does not open the cover plate 300 to prevent external moisture from entering the headlight; when the desiccant loses its effectiveness, external moisture enters the headlight through other gaps, and when the humidity inside the headlight reaches a certain level, the humidity spring 200 will push open the cover plate 300 to allow the moisture inside the headlight to be discharged into the outside air, thereby reducing the humidity inside the headlight; after the desiccant loses its effectiveness, it can also be removed and replaced with a new anti-fog device that intelligently controls the humidity inside the headlight.

[0066] Although the present invention is disclosed as above, it is not limited thereto. Any person skilled in the art may make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be subject to the scope defined by the claims.

Claims

1. An anti-fog device for a vehicle lamp, characterized in that: include: A housing (100), the housing (100) comprising a first housing (110) and a second housing (120), the air vent of the vehicle lamp being snap-connected between the first housing (110) and the second housing (120); A humidity spring (200), the humidity spring (200) being arranged inside the housing (100), the humidity spring (200) comprising a first elastic section (210) and a second elastic section (220), the first elastic section (210) and the second elastic section (220) being arranged in a straight line; The end of the humidity spring (200) close to the outside air is connected to a cover plate (300), and the humidity spring (200) opens or closes the cover plate (300) by stretching and contracting.

2. The anti-fog device according to claim 1, characterized in that: One end of the humidity spring (200) is fixedly connected to the cover plate (300), and the other end of the humidity spring (200) is fixedly connected to the second housing (120).

3. The anti-fog device according to claim 1, characterized in that: The anti-fog device is provided with a receiving groove (400) for receiving the humidity spring (200), and the cover plate (300) is provided with a convex wall (310) interlocked with the receiving groove (400).

4. The anti-fog device according to claim 1, characterized in that: The housing (100) comprises: A clamping portion (130), wherein a plurality of the clamping portions (130) are provided on the surface of the first shell (110) and protrude in a direction away from the surface of the first shell (110).

5. The anti-fog device according to claim 1, characterized in that: The housing (100) comprises: An annular wall (140), the annular wall (140) protrudes along the circumferential direction of the housing (100) and abuts against the peripheral wall of the air vent.

6. The anti-fog device according to claim 1, characterized in that: The housing (100) comprises: A plurality of clamping parts (150) are provided on the surface of the second housing (120) to detachably mount the anti-fog device on the vehicle lamp.

7. The anti-fog device according to claim 6, characterized in that: The clamping portion (150) protrudes in a direction away from the surface of the second housing (120), and the clamping portion (150) is provided with a first end surface (151) and a second end surface (152), wherein the inclination angle of the first end surface (151) is greater than the inclination angle of the second end surface (152).

8. The anti-fog device according to claim 1, characterized in that: The diameter of the second shell (120) is adapted to the diameter of the vent hole.

9. The anti-fog device according to claim 1, characterized in that: The second housing (120) is provided with a through hole (121) for communicating with the internal space of the vehicle lamp.

10. A vehicle lamp, characterized in that: The air vent of the vehicle lamp is equipped with an anti-fog device according to any one of claims 1 to 9.

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