Anti-fog device and vehicle

Abstract

The utility model discloses an anti-fog device and a vehicle. The anti-fog device comprises a mounting bracket, a camera and a drying agent. The installation support is fixed to the inner side of the windshield, a lens cavity is defined by the windshield and the installation support, and the camera is fixed to the installation support. The mounting bracket is provided with a first accommodating cavity, the first accommodating cavity is communicated with the lens cavity, and the drying agent is arranged in the first accommodating cavity. The anti-fog device is simple in structure and lower in cost, the anti-fog effect of the anti-fog device is better, and pictures shot by the camera are clearer.

Description

Technical Field

[0001] The present application relates to the automotive field, and in particular to an anti-fog device and a vehicle. Background Art

[0002] With the rapid development of automobiles, intelligent driving has become increasingly important. Among the current mainstream intelligent driving solutions, visual perception solutions are mostly used, by installing a camera on the inside of the front windshield to capture the situation in front of the vehicle. When the camera is installed on the inside of the windshield, there is a cavity between the camera lens and the windshield, and there is water vapor in the cavity. When the temperature difference between the inside and outside of the vehicle is large, the water vapor will condense on the front windshield to form water mist, resulting in low clarity of the image captured by the camera.

[0003] Currently, there are anti-fog devices on the market for preventing the front windshield from fogging, but the current anti-fog devices have complex structures and poor anti-fog effects. Utility Model Content

[0004] The purpose of the present application is to provide an anti-fog device and a vehicle. The anti-fog device has a simple structure, lower cost, better anti-fog effect, and the picture taken by the camera is clearer.

[0005] The first aspect of the present application provides an anti-fog device, comprising a mounting bracket, a camera and a desiccant. The mounting bracket is fixed to the inner side of a windshield, the windshield and the mounting bracket enclose a lens cavity, and the camera is fixed to the mounting bracket. The mounting bracket is provided with a first accommodating cavity, the first accommodating cavity is connected to the lens cavity, and a desiccant is provided in the first accommodating cavity. The desiccant is used to absorb water vapor in the lens cavity, so that the lens cavity remains dry, and prevents fogging in the area enclosing the lens cavity on the windshield, thereby ensuring that the image in front of the vehicle taken by the camera toward the area is clear.

[0006] In the anti-fog device provided in this embodiment, the first accommodating chamber for storing the desiccant is arranged on the mounting bracket. The first accommodating chamber does not need to be enclosed by a plurality of parts, and has a simple structure, which simplifies the assembly process and reduces the cost. In addition, the first accommodating chamber is arranged outside the camera. Compared with the solution in the related art in which the first accommodating chamber is arranged inside the camera, the space outside the camera is larger, so that the first accommodating chamber can be arranged larger, and the first accommodating chamber can store more desiccant. More desiccant absorbs water vapor, and the anti-fog effect of the anti-fog device is better, so that the picture taken by the camera is clearer.

[0007] In some embodiments, the mounting bracket includes a body and a convex ring, the body and the windshield enclose a lens cavity, and the camera is fixed to the body. The convex ring is convexly arranged on a side of the body away from the lens cavity, and the convex ring and the body enclose a first accommodating cavity. The body is also provided with a through hole, and the through hole connects the first accommodating cavity and the lens cavity.

[0008] In some embodiments, the anti-fog device further comprises a first baffle, which is fixed to the convex ring to close the opening of the first accommodating chamber. The first baffle is provided to prevent the desiccant from falling out of the first accommodating chamber.

[0009] In some embodiments, the first baffle plate is detachably connected to the convex ring. By arranging the first baffle plate and the convex ring to be detachably connected, it is convenient for users to replace the desiccant.

[0010] In some embodiments, the convex ring is provided with an air hole, and the air hole connects the first accommodation chamber with the outside. The anti-fog device also includes a waterproof air-permeable plug, which is installed in the air hole and closes the air hole. By providing the waterproof air-permeable plug, the air in the first accommodation chamber flows more smoothly.

[0011] In some embodiments, a boss is protruded from one side of the first baffle plate toward the first accommodating chamber, and the boss abuts against the desiccant. By providing the boss abutting against the desiccant, the desiccant is compressed, so that more desiccant can be arranged in the first accommodating chamber.

[0012] In some embodiments, there are multiple bosses, and the multiple bosses are arranged at intervals. By providing multiple bosses, more bosses abut against the desiccant, the volume of the desiccant will be compressed smaller, and more desiccant can be arranged in the first accommodating chamber. In addition, multiple bosses are arranged at intervals, and air can flow in the intervals, so that the fluidity of the air in the first accommodating chamber is better, the contact area between the air and the desiccant is increased, and the desiccant can absorb water vapor in the air faster, thereby improving the moisture absorption efficiency of the desiccant.

[0013] In some embodiments, the boss is a flexible boss. By setting the boss as a flexible boss, abnormal noise is prevented when the desiccant shakes during the driving of the vehicle.

[0014] In some embodiments, the body is provided with a fixing seat, the fixing seat is provided with a first through hole, and the first through hole is connected to the lens cavity. The lens of the camera extends into the first through hole. A sealing ring is provided between the outer wall surface of the lens of the camera and the hole wall surface of the first through hole. By providing the sealing ring, the lens cavity can be kept sealed to prevent water vapor from entering the lens cavity.

[0015] In some embodiments, the anti-fog device further comprises a mesh member, which is fixed to the body and covers the through hole. By providing the mesh member, the desiccant is prevented from entering the lens cavity and blocking the sight of the camera.

[0016] In some embodiments, the anti-fog device further includes a decorative cover and a second baffle. The decorative cover is provided with a second accommodating cavity with an opening on one side and a second through hole, and the second through hole is connected to the second accommodating cavity. The decorative cover is fixed to the mounting bracket, and the mounting bracket, the camera and the desiccant are located in the second accommodating cavity, and the second through hole is opposite to the first accommodating cavity. The second baffle is detachably connected to the decorative cover to close the second through hole.

[0017] The anti-fog device is more beautiful by providing the decorative cover. The second baffle is provided, and the second baffle is detachably connected to the decorative cover, so that the user can replace the desiccant conveniently.

[0018] The second aspect of the present application provides a vehicle, comprising a windshield, a frame and the anti-fog device provided in the first aspect of the present application. The windshield is mounted on the frame, and the anti-fog device is mounted on the inner side of the windshield.

[0019] In the anti-fog device provided in the embodiment of the present application, the first accommodating chamber for storing the desiccant is arranged on the mounting bracket. The first accommodating chamber does not need to be enclosed by a plurality of parts, and has a simple structure, which simplifies the assembly process and reduces the cost. In addition, the first accommodating chamber is arranged outside the camera. Compared with the solution in the related art in which the first accommodating chamber is arranged inside the camera, the space outside the camera is larger, so that the first accommodating chamber can be arranged larger, and the first accommodating chamber can store more desiccant. More desiccant absorbs water vapor, the anti-fog effect of the anti-fog device is better, and the picture taken by the camera is clearer. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solution of the present application, the drawings required for use in the implementation scheme are briefly introduced below.

[0021] Figure 1 It is a schematic diagram of a portion of the structure of a vehicle provided in an embodiment of the present application.

[0022] Figure 2 yes Figure 1 Exploded view of the vehicle shown in .

[0023] Figure 3 yes Figure 1 The vehicle shown in FIG. 1 is a cross-sectional view taken along line L1 - L1.

[0024] Figure 4 yes Figure 2 Enlarged view of point A in the middle.

[0025] Figure 5 yes Figure 3 Enlarged view of point B in the middle.

[0026] Figure 6 yes Figure 3 Enlarged view of point C in the middle.

[0027] Explanation of the reference numerals: 1000 - vehicle, 100 - windshield, 200 - anti-fog device, 210 - mounting bracket, 211 - lens cavity, 212 - first accommodating cavity, 213 - main body, 214 - convex ring, 215 - first panel, 216 - second panel, 217 - third panel, 218 - fixing seat, 219 - first through hole, 220 - through hole, 221 - air vent, 230 - camera, 240 - desiccant, 250 - first baffle, 251 - boss, 260 - waterproof breathable plug, 270 - sealing ring, 280 - mesh member, 290 - decorative cover, 291 - second accommodating cavity, 292 - second through hole, 295 - second baffle. DETAILED DESCRIPTION

[0028] The following will be combined with the accompanying drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Figure 1 As shown, for the convenience of description, the length direction of the anti-fog device 200 is defined as the X-axis, the width direction of the anti-fog device 200 is defined as the Y-axis, and the height direction of the anti-fog device 200 is defined as the Z-axis, and the X-axis, Y-axis and Z-axis are perpendicular to each other.

[0029] Please refer to Figure 1 , Figure 2 and Figure 3 The embodiment of the present application provides a vehicle 1000, including a windshield 100, a vehicle frame (not shown), and an anti-fog device 200. The windshield 100 is mounted on the vehicle frame, and the anti-fog device 200 is mounted on the inner side of the windshield 100.

[0030] Specifically, the anti-fog device 200 includes a mounting bracket 210, a camera 230 and a desiccant 240. The mounting bracket 210 is fixed to the inner side of the windshield 100, the windshield 100 and the mounting bracket 210 enclose a lens cavity 211, the camera 230 is fixed to the mounting bracket 210, and the lens of the camera 230 faces the area of ​​the windshield 100 enclosing the lens cavity 211 to shoot the front of the vehicle 1000. The mounting bracket 210 is provided with a first accommodating cavity 212, the first accommodating cavity 212 is connected to the lens cavity 211, and the desiccant 240 is arranged in the first accommodating cavity 212. The desiccant 240 is a magnesium chloride desiccant, and the desiccant 240 is used to absorb the water vapor in the lens cavity 211, the lens cavity 211 can be kept dry, and the area of ​​the windshield 100 enclosing the lens cavity 211 is prevented from fogging, thereby ensuring that the image in front of the vehicle shot by the camera 230 toward the area is clearer.

[0031] In the anti-fog device 200 of this embodiment, the first accommodating chamber 212 for storing the desiccant 240 is arranged on the mounting bracket 210. That is, the first accommodating chamber 212 is directly formed on the mounting bracket 210, and the first accommodating chamber 212 does not need to be enclosed by a plurality of parts, and the structure is simple, which simplifies the assembly process and reduces the cost. In addition, the first accommodating chamber 212 is arranged outside the camera 230. Compared with the solution in the related art that the first accommodating chamber 212 is arranged inside the camera 230, the space outside the camera 230 is larger, so that the first accommodating chamber 212 can be arranged larger, and the first accommodating chamber 212 can store more desiccant 240. More desiccant 240 absorbs water vapor, and the anti-fog effect of the anti-fog device 200 is better, so that the picture taken by the camera 230 is clearer.

[0032] In some embodiments, please refer to Figure 2 , Figure 3 and Figure 4 The mounting bracket 210 includes a body 213 and a convex ring 214. The body 213 and the windshield 100 enclose a lens cavity 211, and the camera 230 is fixed to the body 213. The convex ring 214 is convexly arranged on the side of the body 213 away from the lens cavity 211, and the convex ring 214 and the body 213 enclose a first accommodating cavity 212. The body 213 is also provided with a through hole 220, and the through hole 220 connects the first accommodating cavity 212 and the lens cavity 211.

[0033] Specifically, Figure 4 As shown, the body 213 includes a first panel 215, a second panel 216, a third panel 217 and a fixing seat 218. The first panel 215 is triangular in shape, and the size of the first panel 215 in the X-axis direction gradually decreases along the positive direction of the Z axis. The second panel 216 is triangular in shape, and the size of the second panel 216 in the Y-axis direction gradually increases along the positive direction of the Z axis. The second panel 216 is connected to one end of the first panel 215 in the X-axis direction at an angle. The third panel 217 is triangular in shape, and the size of the third panel 217 in the Y-axis direction gradually increases along the positive direction of the Z axis. The third panel 217 is connected to the other end of the first panel 215 in the X-axis direction at an angle. The third panel 217 is spaced and opposite to the second panel 216, and the distance between the third panel 217 and the second panel 216 in the X-axis direction gradually decreases along the positive direction of the Z axis. The fixing seat 218 is connected to one end of the first panel 215, the second panel 216 and the third panel 217 in the positive direction of the Z axis.

[0034] like Figure 3 and Figure 4As shown, the first panel 215, the second panel 216, the third panel 217 and the fixing seat 218 are fixedly attached to the inner side of the windshield 100 to enclose the lens cavity 211 with the windshield 100. Specifically, the end surface of the second panel 216 facing away from the first panel 215 and the end surface of the third panel 217 facing away from the first panel 215 are both fixedly attached to the inner side of the windshield 100, and the end surface of the fixing seat 218 facing the windshield 100 is fixedly attached to the inner side of the windshield 100. The second panel 216, the third panel 217 and the fixing seat 218 support the first panel 215, so that the first panel 215 is spaced opposite to the windshield 100, and the space between the first panel 215 and the windshield 100 forms the lens cavity 211.

[0035] Along the negative direction of the Z axis, the distance between the first panel 215 and the windshield 100 in the Y axis direction gradually decreases, and the distance between the end surface of the first panel 215 in the negative direction of the Z axis and the windshield 100 is 0, that is, the end surface of the first panel 215 in the negative direction of the Z axis is arranged in close contact with the windshield 100. It can be understood that the end surface of the first panel 215 in the negative direction of the Z axis, the end surface of the second panel 216 facing away from the first panel 215, the end surface of the third panel 217 facing away from the first panel 215, and the end surface of the fixing seat 218 facing the windshield 100 are all fixed to the inner side of the windshield 100, so that the lens cavity 211 can maintain a sealed state. Exemplarily, the first panel 215, the second panel 216, the third panel 217 and the fixing seat 218 can be fixed to the inner side of the windshield 100 by gluing. The glue used is a sealing strength glue, which can not only ensure that the mounting bracket 210 is firmly fixed to the windshield, but also ensure that the lens cavity 211 is in a sealed state.

[0036] In this embodiment, Figure 3 As shown, the fixing seat 218 is provided with a first through hole 219, and the first through hole 219 connects the lens cavity 211 with the outside, and the opening of the first through hole 219 faces the windshield 100. The camera 230 is fixed to the fixing seat 218, and the lens of the camera 230 extends into the first through hole 219, and the lens of the camera 230 faces the windshield 100 to shoot the front of the vehicle 1000. Exemplarily, the camera 230 can be fixed to the fixing seat 218 by screws or snap-on. In other embodiments, the lens of the camera 230 is interference-fitted with the first through hole 219 to achieve a fixed connection between the camera 230 and the fixing seat 218.

[0037] In this embodiment, please refer to Figure 3 , Figure 5 and Figure 6 , Figure 5 yes Figure 3 Enlarged view of point B in the middle. Figure 6 yes Figure 3Enlarged view of point C in the middle. The convex ring 214 is convexly arranged on the side of the first panel 215 away from the windshield 100. It can be understood that the convex ring 214 is convexly arranged on the side of the body 213 away from the lens cavity 211. The convex ring 214 and the first panel 215 enclose a first accommodating cavity 212 with an opening on one side, and the opening of the first accommodating cavity 212 is located on the side of the convex ring 214 away from the first panel 215. The first panel 215 is provided with a through hole 220, and the through hole 220 penetrates both sides of the first panel 215 along the thickness direction to connect the first accommodating cavity 212 and the lens cavity 211. The desiccant 240 in the first accommodating cavity 212 can absorb the water vapor in the lens cavity 211, so that the area enclosing the lens cavity 211 on the windshield 100 will not fog up, thereby ensuring that the picture taken by the camera 230 has a high definition. In addition, since the first through hole 219 is connected to the lens cavity 211, the desiccant 240 can also absorb water vapor in the first through hole 219, so that the lens of the camera 230 located in the first through hole 219 will not fog up, further improving the clarity of the picture taken by the camera 230.

[0038] In this embodiment, please refer to Figure 4 The body 213 and the convex ring 214 are integrally injection molded, that is, the first panel 215, the second panel 216, the third panel 217, the fixing seat 218 and the convex ring 214 are integrally injection molded. By integrally injection molding the mounting bracket 210, the assembly process is simplified, which is conducive to improving the assembly efficiency and thus reducing the production cost. In other embodiments, the first panel 215, the second panel 216, the third panel 217, the fixing seat 218 and the convex ring 214 can also be processed separately, and then the first panel 215, the second panel 216, the third panel 217, the fixing seat 218 and the convex ring 214 are spliced ​​into the mounting bracket 210 by hot melt welding.

[0039] In some embodiments, please refer to Figure 4 and Figure 5 The anti-fog device 200 further includes a first baffle 250, which is fixed to the convex ring 214 to close the opening of the first accommodating chamber 212. In this embodiment, the desiccant 240 is placed in the first accommodating chamber 212 in a bagged form, and then the first baffle 250 is used to close the opening of the first accommodating chamber 212. In other embodiments, the desiccant particles can also be directly placed in the first accommodating chamber 212. By providing the first baffle 250, the desiccant 240 is prevented from falling out of the first accommodating chamber 212 during the driving of the vehicle 1000.

[0040] In other embodiments, the desiccant package may be adhered to the wall of the first accommodating cavity 212 , so that the desiccant 240 will not fall out of the first accommodating cavity 212 even if the first baffle 250 is not used to cover the opening of the first accommodating cavity 212 .

[0041] In some embodiments, please refer to Figure 5 , the first baffle plate 250 is detachably connected to the convex ring 214. Exemplarily, the first baffle plate 250 is fixed to the convex ring 214 by screws. In other embodiments, the first baffle plate 250 can also be fixed to the convex ring 214 by snapping. By setting the first baffle plate 250 and the convex ring 214 to be detachably connected, it is convenient for users to replace the desiccant 240.

[0042] In some embodiments, please refer to Figure 4 , the convex ring 214 is provided with an air hole 221, and the air hole 221 passes through the cavity side of the first accommodating cavity 212 and the side of the convex ring 214 away from the cavity side, so as to connect the first accommodating cavity 212 with the outside. The anti-fog device 200 also includes a waterproof air-permeable plug 260, which is installed on the air hole 221, and the waterproof air-permeable plug 260 closes the air hole 221. After the desiccant 240 absorbs water vapor, the volume of the desiccant 240 will increase, and the increase in the volume of the desiccant 240 will compress the air in the first accommodating cavity 212, and when the desiccant 240 absorbs water vapor, the air in the first accommodating cavity 212 expands due to heat, thereby increasing the gas pressure in the first accommodating cavity 212. In this embodiment, by providing the waterproof air-permeable plug 260, the air in the first accommodating cavity 212 can flow to the outside through the waterproof air-permeable plug 260, thereby preventing the gas pressure in the first accommodating cavity 212 from being too high.

[0043] In some embodiments, please refer to Figure 5 A boss 251 is provided on one side of the first baffle 250 facing the first accommodation chamber 212, and the boss 251 abuts against the desiccant 240. By providing the boss 251 to abut against the desiccant 240, the desiccant 240 is compressed, so that more desiccant 240 can be arranged in the first accommodation chamber 212.

[0044] In some embodiments, please refer to Figure 5 , the number of bosses 251 is multiple, and the multiple bosses 251 are arranged at intervals. By providing multiple bosses 251, more bosses 251 abut against the desiccant 240, the volume of the desiccant 240 will be compressed smaller, and more desiccant 240 can be provided in the first accommodating chamber 212. In addition, the multiple bosses 251 are arranged at intervals, and air can flow in the intervals, so that the fluidity of the air in the first accommodating chamber 212 is better, the air can fully contact the desiccant 240, the contact area between the air and the desiccant 240 is larger, and the desiccant 240 can absorb water vapor in the air faster, thereby improving the moisture absorption efficiency of the desiccant 240.

[0045] In some embodiments, the boss 251 is a flexible boss. A flexible boss means that the boss 251 is made of a flexible material such as rubber. The boss 251 can be processed separately first, and then the boss 251 is bonded to the side of the first baffle 250 facing the first accommodating cavity 212 after the processing is completed. In this embodiment, by setting the boss 251 as a flexible boss, the boss 251 has a certain buffering performance, which prevents the desiccant 240 from shaking and hitting during the driving of the vehicle 1000 and causing abnormal noise.

[0046] In some embodiments, please refer to Figure 6 A sealing ring 270 is provided between the outer wall surface of the lens of the camera 230 and the hole wall surface of the first through hole 219. Specifically, the material of the sealing ring 270 is silicone. When installing the sealing ring 270, the sealing ring 270 can be first sleeved on the outer wall surface of the lens of the camera 230, and then the lens of the camera 230 is installed into the first through hole 219. The hole wall surface of the first through hole 219 and the outer wall surface of the lens of the camera 230 squeeze the sealing ring 270, so that the hole wall surface of the first through hole 219 and the outer wall surface of the lens of the camera 230 are in a sealed state, preventing water vapor from entering the lens cavity 211 from the first through hole 219, ensuring that the lens cavity 211 can remain dry, and then ensuring that the windshield 100 will not fog up, so that the picture taken by the camera 230 is clearer.

[0047] In some embodiments, please refer to Figure 5 The anti-fog device 200 further includes a mesh 280, which is fixed to the body 213 and covers the through hole 220. Exemplarily, the mesh 280 of this embodiment is a plate provided with a plurality of openings, and the mesh 280 is fixed to the hole wall surface of the through hole 220. The mesh 280 can be fixed to the hole wall surface of the through hole 220 by hot melt welding, or the mesh 280 can also be integrally formed with the first panel 215. By providing the mesh 280, the desiccant 240 can be prevented from entering the lens cavity 211 and blocking the line of sight of the camera 230.

[0048] In other embodiments, the mesh member 280 may also be a metal mesh. The mesh member 280 is fixed to one side of the first panel 215 along the thickness direction and covers the through hole 220 .

[0049] In some embodiments, please refer to Figure 2 and Figure 3, the anti-fog device 200 further includes a decorative cover 290 and a second baffle 295. The decorative cover 290 is provided with a second accommodating cavity 291 with an opening on one side and a second through hole 292, and the second through hole 292 is communicated with the second accommodating cavity 291. The decorative cover 290 is fixed to the mounting bracket 210. In this embodiment, the decorative cover 290 is fixed to the mounting bracket 210 by a snap-on method. In other embodiments, the decorative cover 290 can also be fixed to the mounting bracket 210 by screws. The mounting bracket 210, the camera 230 and the desiccant 240 are located in the second accommodating cavity 291, and the first baffle 250 is exposed to the outside relative to the second through hole 292. After the first baffle 250 is removed, the opening of the first accommodating cavity 212 is opposite to the second through hole 292. The second baffle 295 is detachably connected to the decorative cover 290 to close the second through hole 292. In this embodiment, the second baffle 295 is fixed to the decorative cover 290 by screws. In other embodiments, the second baffle 295 can also be snap-on to the decorative cover 290.

[0050] If the user needs to replace the desiccant 240, first remove the second baffle 295 and the first baffle 250 in sequence, so that the opening of the first accommodating cavity 212 is exposed relative to the second through hole 292, then take out the old desiccant 240, and then put the new desiccant 240 into the first accommodating cavity 212, and finally install the first baffle 250 and the second baffle 295 in sequence.

[0051] In this embodiment, the anti-fog device 200 is more beautiful by providing the decorative cover 290. The second baffle 295 is provided, and the second baffle 295 is detachably connected to the decorative cover 290, so that the user can replace the desiccant 240 conveniently.

[0052] The embodiments of the present application are introduced in detail above. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea.

Claims

1. An anti-fog device, characterized in that: It comprises a mounting bracket, a camera and a desiccant; the mounting bracket is fixed to the inner side of the windshield, and the windshield and the mounting bracket enclose a lens cavity; the camera is fixed to the mounting bracket; The mounting bracket is provided with a first accommodating cavity, and the first accommodating cavity is communicated with the lens cavity; the desiccant is arranged in the first accommodating cavity.

2. The anti-fog device according to claim 1, characterized in that: The mounting bracket comprises a body and a convex ring, the body and the windshield enclose the lens cavity, and the camera is fixed to the body; The convex ring is convexly arranged on a side of the body away from the lens cavity, and the convex ring and the body enclose the first accommodating cavity; the body is also provided with a through hole, and the through hole connects the first accommodating cavity and the lens cavity.

3. The anti-fog device according to claim 2, characterized in that: It also includes a first baffle plate, which is fixed to the convex ring to close the opening of the first accommodating cavity.

4. The anti-fog device according to claim 3, characterized in that: The first baffle is detachably connected to the convex ring.

5. The anti-fog device according to claim 3, characterized in that: The convex ring is provided with an air hole, and the air hole connects the first accommodating cavity with the outside; The anti-fog device further comprises a waterproof breathable plug, which is installed on the breathable hole and closes the breathable hole.

6. The anti-fog device according to claim 3, characterized in that: A boss is protruded from one side of the first baffle plate toward the first accommodating chamber, and the boss abuts against the desiccant.

7. The anti-fog device according to claim 6, characterized in that: The number of the bosses is multiple, and the multiple bosses are arranged at intervals.

8. The anti-fog device according to claim 6, characterized in that: The boss is a flexible boss.

9. The anti-fog device according to claim 2, characterized in that: The main body is provided with a fixing seat, the fixing seat is provided with a first through hole, the first through hole is connected to the lens cavity; the lens of the camera extends into the first through hole; a sealing ring is provided between the outer wall surface of the lens of the camera and the hole wall surface of the first through hole.

10. The anti-fog device according to claim 2, characterized in that: It also includes a mesh member, which is fixed to the body and covers the through hole.

11. The anti-fog device according to any one of claims 1 to 10, characterized in that: It also includes a decorative cover and a second baffle; the decorative cover is provided with a second accommodating cavity and a second through hole opened on one side, and the second through hole is connected to the second accommodating cavity; The decorative cover is fixed to the mounting bracket, the mounting bracket, the camera and the desiccant are located in the second accommodating cavity, and the second through hole is opposite to the first accommodating cavity; the second baffle is detachably connected to the decorative cover to close the second through hole.

12. A vehicle, characterized in that: The vehicle comprises a windshield, a vehicle frame and the anti-fog device according to any one of claims 1 to 11; the windshield is mounted on the vehicle frame, and the anti-fog device is mounted on the inner side of the windshield.

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