A type of anti-fog car light

Abstract

This utility model relates to the field of automotive lighting technology, specifically to an anti-fogging headlight, which includes a lens and a base. The lens and base are fastened together to form a chamber. The base has an embedding hole and a detection hole, both of which penetrate the base. A condensation controller is installed in the embedding hole, and a sealing film is attached to the surface of the detection hole. The condensation controller includes a valve assembly and a control body. A gas exchange channel is opened in the middle of the control body. The valve assembly covers the gas exchange channel in a stacked manner. The control body is embedded in the embedding hole. This improves the headlight structure by replacing the conventional breathable membrane for air exchange between the inside and outside of the headlight with a sealing film and adding a condensation controller to control temperature and humidity. The stacked valve assembly controls the rate of water vapor exchange between the inside and outside of the headlight, which can improve the service life of the desiccant inside the headlight and enhance the absorption effect of the desiccant on water vapor entering the headlight, thereby achieving better anti-fogging effect and extending the anti-fogging life.

Description

Technical Field

[0001] This utility model relates to the field of automotive lighting technology, and in particular to an anti-fogging vehicle light. Background Technology

[0002] The main components of a car headlight system include a lens, a light source, a breathable membrane, and a desiccant. The desiccant and breathable membrane are evenly distributed around the light source. The headlights rely on the breathable membrane to exchange heat naturally and on the desiccant to absorb moisture inside the headlights. However, the desiccant has a limited lifespan and generally fails within about a year of purchase. Once the desiccant fails, the headlights are very prone to fogging in high temperature and high humidity environments, and the fogging cannot be resolved.

[0003] In view of this, there is an urgent need for a type of vehicle light that can improve the anti-fog lifespan of existing vehicle lights to meet the market demand for vehicle lights. Utility Model Content

[0004] The purpose of this invention is to provide an anti-fogging vehicle light that has a longer anti-fogging lifespan while reducing the risk of fogging.

[0005] To achieve the above objectives, this utility model provides an anti-fogging vehicle light, which includes a lens and a base. The lens and the base are fastened together to form a cavity. The base has an embedding hole and a detection hole, both of which penetrate the base. A condensation controller is installed in the embedding hole, and a sealing film is attached to the surface of the detection hole.

[0006] The condensation controller includes a valve plate assembly and a control body. The control body has a gas exchange channel in the middle. The valve plate assembly covers the gas exchange channel in a stacked manner. The control body is placed in the recessed hole.

[0007] To address the issue of short lifespan of anti-fog devices in current automotive headlights, this application first seals the cavity formed by the lens and the base, allowing moisture to enter and exit the headlight only through the condensation controller. This replaces the previous method of using a breathable membrane to structurally seal the detection hole. Instead, the condensation controller controls the exchange of moisture inside and outside the headlight. The lens is made of a transparent material to cooperate with the headlight for illumination. The cavity formed by the base and the lens is used to house other components. The detection hole is used to test airtightness during the production process. After the lens and the base are fastened together, air is introduced into the detection hole to test the airtightness of the cavity. The recessed hole is used to house the condensation controller.

[0008] The condensation controller is structurally improved by embedding the control body within the recessed hole and installing a stacked valve assembly on the gas exchange channel. This allows gas exchange between the inside and outside of the headlight to occur only after passing through the valve assembly, significantly reducing the amount of moisture entering the headlight in conventional solutions and maintaining a consistently low relative humidity inside the headlight. More specifically, previous solutions relied primarily on a breathable membrane on the surface of the detection hole for natural heat exchange. This application, however, uses a condensation controller to limit heat exchange between the inside and outside of the headlight, as well as the entry rate of external air containing moisture. Furthermore, the breathable membrane is replaced with a non-breathable sealing membrane, significantly extending the lifespan of the desiccant stored inside the headlight.

[0009] The base has a first light source and a second light source at its two ends. The first light source and the second light source are both connected to the base by bolts. A desiccant is also provided outside the first light source and is fixed to the base.

[0010] The first light source and the second light source are equipped with a variety of functional modules, such as high beam headlights, low beam headlights, cornering lights, daytime running lights, etc. Since they are not involved in this application, the specific structural composition of the first light source and the second light source is not described in detail. In this application, in addition to being equipped with the aforementioned modules, the first light source also serves as a heat source to dry the desiccant placed around it, thereby improving the service life of the desiccant.

[0011] The base is also provided with a decorative ring, which covers the base to shield the first light source and the second light source, and a light window is opened in the middle of the decorative ring.

[0012] The main function of the decorative ring is to shield and guide the propagation direction of the light emitted by the first and second light sources, that is, to emit light through the light window. In addition, the transparent lens also makes the headlights more aesthetically pleasing.

[0013] Along the extension direction of the gas exchange channel, a cavity is formed inside the control body. A ventilation groove and a breathing hole are respectively opened on the two side walls of the cavity. The breathing hole is close to the valve plate group, and a channel is arranged around the outside of the breathing hole. The ventilation groove is close to the light distribution lens.

[0014] The cavity formed within the control body is also equipped with a desiccant. The ventilation groove and the breathing hole cooperate with the cavity to form a passage connecting the chamber to the outside. The groove is arranged around the outer periphery of the breathing hole, thereby extending the gas exchange path.

[0015] The valve plate assembly includes a PTFE membrane, a valve body plate, and a valve plate with an exchange hole. The valve plate is embedded in the gas exchange channel and covers the breather hole and the channel to form a labyrinth channel. The valve body plate is pressed onto the valve plate, and the valve body plate has an air window above the exchange hole. The PTFE membrane covers the opening of the gas exchange channel to form a structural seal for the gas exchange channel.

[0016] The valve plate assembly is formed by stacking the PTFE membrane, the valve body plate, and the valve plates. The exchange hole is cross-shaped. When the inside of the headlight is under positive pressure, the exchange hole opens outward; when the inside of the headlight is under negative pressure, the exchange hole opens inward. In conjunction with the labyrinth channel, the speed at which external gas enters is greatly reduced, allowing the desiccant to fully absorb moisture from the incoming air to improve the moisture absorption effect.

[0017] This utility model relates to an anti-fogging vehicle light. Addressing the short lifespan of conventional vehicle lights' anti-fogging properties, the invention improves the light structure by replacing the conventional breathable membrane for air exchange between the inside and outside of the light with a sealing membrane. A condensation controller is added to regulate the temperature and humidity of the light. A stacked valve assembly controls the rate of moisture exchange between the inside and outside of the light, thus extending the lifespan of the desiccant inside the light and improving its absorption of moisture entering the light, resulting in better anti-fogging performance and a longer anti-fogging lifespan. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, 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 utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a front axonometric structural diagram of an anti-fogging vehicle light according to this utility model.

[0020] Figure 2 This is an exploded schematic diagram of an anti-fogging vehicle light according to this utility model.

[0021] Figure 3 This is a schematic diagram of the rear structure of an anti-fogging vehicle light according to this utility model.

[0022] Figure 4 This is a schematic diagram of the base structure of an anti-fogging vehicle light equipped with a condensation controller and a desiccant.

[0023] Figure 5 This is a schematic diagram of the structure of a condensation controller for an anti-fogging vehicle light according to this utility model.

[0024] Figure 6 This is an exploded structural diagram of a condensation controller for an anti-fogging vehicle light according to this utility model.

[0025] Figure 7 This is a schematic diagram of the valve plate of an anti-fogging vehicle light according to this utility model.

[0026] 1. Lens; 2. Base; 3. Chamber; 4. Embedded hole; 5. Detection hole; 6. Condensation controller; 7. Sealing membrane; 8. Valve plate assembly; 9. Control body; 10. Gas exchange channel; 11. First light source; 12. Second light source; 13. Desiccant; 14. Decorative ring; 15. Light window; 16. Cavity; 17. Ventilation groove; 18. Breathing hole; 19. Channel; 20. PTFE membrane; 21. Valve body plate; 22. Valve plate; 23. Exchange hole; 24. Air window. Detailed Implementation

[0027] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0028] Please see Figures 1 to 4 This utility model provides an anti-fogging vehicle light.

[0029] It includes a lens 1 and a base 2. The lens 1 and the base 2 are fastened together to form a chamber 3. The base 2 has an embedded hole 4 and a detection hole 5. Both the embedded hole 4 and the detection hole 5 penetrate the base 2. A condensation controller 6 is installed in the embedded hole 4. A sealing film 7 is attached to the surface of the detection hole 5.

[0030] The condensation controller 6 includes a valve plate group 8 and a control body 9. A gas exchange channel 10 is provided in the middle of the control body 9. The valve plate group 8 covers the gas exchange channel 10 in a stacked manner. The control body 9 is placed in the recess 4.

[0031] In this embodiment, the light distribution lens 1 has a transparent portion to facilitate light emission. The base 2 and the light distribution lens 1 form the chamber 3. The recessed hole 4 is used to house the condensation controller 6. After the detection hole 5 is manufactured, a sealing film 7 is installed to seal it, so that gas exchange between the inside and outside of the vehicle lamp can only be achieved through the condensation controller 6. The valve plate group 8 is arranged in a stacked manner. The control body 9 is provided with the gas exchange channel 10 to cooperate with the valve plate group 8, so that the entry speed of external gas into the vehicle lamp can be reduced.

[0032] Furthermore, the base 2 is provided with a first light source 11 and a second light source 12 at both ends. The first light source 11 and the second light source 12 are both connected to the base 2 by bolts. A desiccant 13 is also provided outside the first light source 11 and is fixed on the base 2.

[0033] The first light source 11 and the second light source 12 provide illumination for the vehicle lights, while the desiccant 13 is used to absorb moisture inside the vehicle lights.

[0034] Furthermore, the base 2 is also provided with a decorative ring 14, which covers the base 2 to shield the first light source 11 and the second light source 12, and a light window 15 is opened in the middle of the decorative ring 14.

[0035] The light window 15, in conjunction with the light distribution lens 1, allows the light emitted by the first light source 11 and the second light source 12 to be emitted through the light window 15, while the decorative ring 14 is used to block other light emitted by the first light source 11 and the second light source 12.

[0036] Furthermore, along the extension direction of the gas exchange channel 10, a cavity 16 is formed inside the control body 9. The two side walls of the cavity 16 are respectively provided with a ventilation groove 17 and a breathing hole 18. The breathing hole 18 is close to the valve plate group 8, and a channel 19 is arranged around the outside of the breathing hole 18. The ventilation groove 17 is close to the optical lens 1.

[0037] Please see Figures 5 to 7 The ventilation slot 17 works in conjunction with the breathing hole 18 to connect the internal environment of the headlight, allowing the headlight to exchange gases with the outside world. The channel 19 is used to extend the path of gas into the breathing hole 18 to reduce the speed at which outside air enters.

[0038] Furthermore, the valve plate assembly 8 includes a PTFE membrane 20, a valve body plate 21, and a valve plate 22 with an exchange hole 23. The valve plate 22 is embedded in the gas exchange channel 10 and covers the breather hole 18 and the channel 19 to form a labyrinth channel. The valve body plate 21 is pressed onto the valve plate 22, and the valve body plate 21 has an air window 24 above the exchange hole 23. The PTFE membrane 20 covers the opening of the gas exchange channel 10 to form a structural seal for the gas exchange channel 10.

[0039] The PTFE membrane 20 is a thin film with micropores, while the valve plate 22 is made entirely of silicone. The ventilation holes on the valve plate 22 are used for ventilation. The valve body pressure plate 21 presses the valve plate 22 on one hand, and on the other hand, in conjunction with the setting of the air window 24, the gas can only enter the labyrinth channel through the location of the ventilation holes. The PTFE membrane 20 forms a structural seal for the gas exchange channel 10. It has micropores, which still allow the gas exchange channel 10 to achieve ventilation between the inside and outside of the headlight. This application delays the entry of external atmosphere into the headlight, which can reduce the amount of water vapor entering the headlight and improve the absorption capacity of the desiccant 13 for water vapor, thereby improving the anti-fogging ability of the headlight and extending the anti-fogging life of the headlight.

[0040] The above-disclosed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Those skilled in the art can understand that implementing all or part of the above-described embodiments and making equivalent changes in accordance with the claims of the present utility model are still within the scope of the utility model.

Claims

1. A fog-proof vehicle light, characterized in that, Includes a lens (1) and a base (2), the lens (1) and the base (2) are fastened together to form a chamber (3), the base (2) has an inset hole (4) and a detection hole (5), the inset hole (4) and the detection hole (5) both penetrate the base (2), a condensation controller (6) is installed in the inset hole (4), and a sealing film (7) is attached to the surface of the detection hole (5); The condensation controller (6) includes a valve plate group (8) and a control body (9). The control body (9) has a gas exchange channel (10) in the middle. The valve plate group (8) covers the gas exchange channel (10) in a stacked manner. The control body (9) is placed in the recess (4).

2. The anti-fogging vehicle light as described in claim 1, characterized in that, The base (2) has a first light source (11) and a second light source (12) at its two ends. The first light source (11) and the second light source (12) are both connected to the base (2) by bolts. A desiccant (13) is also provided outside the first light source (11) and is fixed on the base (2).

3. The anti-fogging vehicle light as described in claim 2, characterized in that, The base (2) is also provided with a decorative ring (14), which covers the base (2) to shield the first light source (11) and the second light source (12). A light window (15) is opened in the middle of the decorative ring (14).

4. The anti-fogging vehicle light as described in claim 1, characterized in that, Along the extension direction of the gas exchange channel (10), a cavity (16) is formed in the control body (9). A ventilation groove (17) and a breathing hole (18) are respectively opened on the two side walls of the cavity (16). The breathing hole (18) is close to the valve plate group (8), and a channel (19) is arranged around the outside of the breathing hole (18). The ventilation groove (17) is close to the optical lens (1).

5. The anti-fogging vehicle light as described in claim 4, characterized in that, The valve plate assembly (8) includes a PTFE membrane (20), a valve body plate (21), and a valve plate (22) with an exchange hole (23). The valve plate (22) is embedded in the gas exchange channel (10) and covers the breathing hole (18) and the channel (19) to form a labyrinth channel. The valve body plate (21) is pressed onto the valve plate (22), and the valve body plate (21) has an air window (24) above the exchange hole (23). The PTFE membrane (20) covers the opening of the gas exchange channel (10) to form a structural seal for the gas exchange channel (10).

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