An anti-fog vehicle lamp

Abstract

The utility model discloses a kind of anti-fog vehicle lamps, including lamp shell, air flow passage and elastic sealing assembly are arranged in lamp shell, elastic sealing assembly includes bolt, spring and sealing ball, bolt is equipped with exhaust passage, sealing ball is movably arranged in the inside of air flow passage, spring one end abuts bolt, the other end abuts sealing ball, when the gas pressure that sealing ball is received exceeds spring's elastic force value, sealing ball moves to the direction of air flow passage outer end direction overcoming spring's elastic force, at this time, air flow passage and exhaust passage form intercommunication state, gas is discharged from exhaust passage, when the air pressure in gas storage cavity drops and recovers to normal level, spring is pushed back to initial position by its elastic restoring force and makes sealing ball re-tightly seal and block air flow passage, and second sealing gasket is pressed again in air flow passage inner end, the setting of elastic sealing assembly can ensure that gas storage cavity is sealed inside, effectively prevent nitrogen leakage, while avoiding wet air into gas storage cavity inside.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts technology, specifically to an anti-fog vehicle light. Background Technology

[0002] With the improvement of living standards, automobiles have become an indispensable means of transportation in people's lives. As a result, the problem of fogging in car lights has always been a major concern. In the working environment, car lights are connected to the external atmospheric pressure. Moisture in the external environment will be transferred to the inside of the lights through the components connected to the atmosphere, resulting in increased humidity inside the lights. Under the stimulation of day and night or rapid temperature changes, tiny water droplets will condense inside the lights and form on the inner surface of the lens. This causes the lights to be affected by internal moisture, resulting in a decrease in optical performance and failure to meet the requirements of safe lighting. This poses a safety hazard to driving and car use. To effectively solve the problem of water vapor inside car lights and improve their anti-fog performance, many manufacturers choose to fill the car lights with nitrogen. Nitrogen is a chemically stable gas that is inert and does not easily react with other substances. Filling the car lights with nitrogen can replace the original air inside the lights, reduce the water vapor content, and thus reduce the possibility of fogging inside the lights. However, in pursuit of ease of operation and cost control, most manufacturers directly inject nitrogen into headlights equipped with vent valves. This method has low replacement efficiency, cannot effectively remove the original air and water vapor inside the headlight, and is not sealed after inflation, relying solely on the vent valve to balance the air pressure. It should be noted that the working principle of the vent valve is usually to achieve selective gas permeation through a permeable membrane inside the valve body, allowing air and other gases to pass through under certain conditions while preventing liquids and larger particles of impurities from entering the headlight. However, the vent valve cannot effectively prevent water vapor and other gases from the outside air from entering the headlight, which leads to a gradual decrease in the purity of the nitrogen inside the headlight, ultimately causing the headlight's anti-fog function to fail. Utility Model Content

[0003] In order to overcome the shortcomings of existing technical solutions, this utility model provides an anti-fog vehicle light, which can effectively solve the technical problem that the vehicle light does not have a sealing structure and relies only on the vent valve to balance the air pressure, resulting in the gradual decrease of nitrogen purity inside the vehicle light and ultimately causing the anti-fog function of the vehicle light to fail.

[0004] The technical solution adopted by this utility model to solve its technical problem is: a fog-proof vehicle light, including a lamp housing, the lamp housing is hollow to form a gas storage cavity, one end of the lamp housing is provided with an airflow channel and an elastic sealing component, and the airflow channel and the gas storage cavity are interconnected. The elastic sealing assembly includes a bolt, a spring, and a sealing ball. The bolt is assembled at the outer end of the airflow channel and has an exhaust channel that communicates with the airflow channel. The sealing ball is movably disposed inside the airflow channel. One end of the spring abuts against the end face of the bolt, and the other end abuts against the outer surface of the sealing ball, so that the sealing ball tightly seals and blocks the airflow channel.

[0005] Furthermore, the bolt includes a stud and a nut, the venting channel extends axially through the stud, and the nut has at least one venting groove.

[0006] Furthermore, the inside of the nut is fitted with a waterproof and breathable membrane.

[0007] Furthermore, the elastic sealing assembly also includes a first sealing washer, with a stud extending into the airflow channel after passing through the first sealing washer, and a nut pressing the first sealing washer tightly against the outer end of the airflow channel.

[0008] Furthermore, the resilient sealing assembly also includes a second sealing gasket, which is fitted inside the airflow channel, and the sealing ball presses the second sealing gasket tightly against the inner end of the airflow channel.

[0009] Furthermore, the airflow channel is provided with a vent hole, the diameter of which is smaller than the outer diameter of the second sealing gasket.

[0010] Compared with the prior art, the beneficial effects of this utility model are: During the inflation process, the inside of the lamp housing is first evacuated and the gas storage chamber is made to reach a certain negative pressure. Then, dry nitrogen is filled in. The nitrogen flows out from the external inflation device, enters the airflow channel through the outer end of the airflow channel, flows inward along the airflow channel, and finally enters the gas storage chamber through the vent hole, replacing the original air and water vapor in the gas storage chamber. During the use of the lamp housing, factors such as temperature changes and external pressure may cause the gas pressure inside the gas storage chamber to rise. When the gas pressure inside the gas storage chamber rises and the gas pressure on the sealing ball exceeds the spring force, the sealing ball overcomes the spring force and moves towards the outer end of the airflow channel. At this time, the airflow channel and the exhaust channel are connected, and the gas is discharged from the exhaust channel. When the gas pressure inside the gas storage chamber drops and returns to the normal level, the spring pushes the sealing ball back to the initial position through its own elastic restoring force, so that the sealing ball re-seals the airflow channel and presses the second sealing gasket tightly against the inner end of the airflow channel again. The setting of the elastic sealing component can ensure the sealing inside the gas storage chamber, effectively prevent nitrogen leakage inside the gas storage chamber, and prevent humid air from entering the gas storage chamber. Attached Figure Description

[0011] Figure 1 A schematic diagram of the overall structure of an anti-fog vehicle light; Figure 2 Exploded view of the isometric angle of the elastic sealing assembly; Figure 3 Exploded view of the resilient sealing assembly from another isometric angle; Figure 4 This is a cross-sectional view of the bolt.

[0012] Numbering on the map: 1. Lamp housing; 2. Elastic sealing assembly; 20. Airflow channel; 21. Second sealing gasket; 22. Sealing ball; 23. Spring; 24. First sealing gasket; 25. Stud; 26. Nut; 27. Exhaust groove; 28. Mounting groove; 29. ​​Vent hole; 210. Exhaust channel; 211. Waterproof and breathable membrane. Detailed Implementation

[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0014] like Figure 1-4 As shown, this utility model provides a fog-proof vehicle light, including a lamp housing 1. The lamp housing 1 is hollow inside to form a gas storage cavity. One end of the lamp housing 1 is provided with an airflow channel 20 and an elastic sealing component 2. The airflow channel 20 is connected to the gas storage cavity. The airflow channel 20 has an outer end and an inner end. The airflow channel 20 is provided with an installation groove 28 near its outer end and a vent hole 29 is provided at the inner end of the airflow channel 20. The elastic sealing assembly 2 in this embodiment includes a bolt, a first sealing washer 24, a spring 23, a sealing ball 22 and a second sealing washer 21, wherein the diameter of the vent hole 29 is smaller than the outer diameter of the second sealing washer 21, and the bolt is provided with an exhaust channel 210 that communicates with the airflow channel 20. In this embodiment, the bolt includes a stud 25 and a nut 26. The nut 26 is fixed to one end of the stud 25. The exhaust channel 210 passes through the stud 25 axially. The nut 26 is provided with at least one exhaust groove 27. The exhaust groove 27 is provided on the side wall of the nut 26 and cooperates with the exhaust channel 210 to realize the gas discharge function. The nut 26 is equipped with a waterproof and breathable membrane 211 inside. The waterproof and breathable membrane 211 can effectively prevent moisture from entering the lamp housing 1, while allowing air to circulate, so as to maintain the air pressure balance inside the lamp housing 1, reduce water vapor condensation caused by temperature difference, and improve the performance of the anti-fog vehicle light. The stud 25 is provided with external threads, and the airflow channel 20 is provided with internal threads at a position near its outer end and corresponding to the stud 25. The stud 25 forms a threaded connection with the internal threads of the airflow channel 20 through the external threads, thereby fixing the bolt to the outer end of the airflow channel 20. During the inflation process, the inside of the lamp housing 1 is first evacuated and the gas storage chamber is made to reach a certain negative pressure. Then, dry nitrogen is filled in. The nitrogen flows out from the external inflation device, enters the airflow channel 20 through the outer end of the airflow channel 20, flows inward along the airflow channel 20, and finally enters the gas storage chamber through the vent 29, replacing the original air and water vapor in the gas storage chamber. After the inflation operation is completed, the airflow channel 20 is sealed and assembled. First, the second sealing washer 21 is assembled on the inner end of the airflow channel 20. Then, the sealing ball 22 and the spring 23 are assembled in sequence inside the airflow channel 20. The sealing ball 22 is movably set inside the airflow channel 20. Then, the first sealing washer 24 is assembled in the mounting groove 28. Finally, the bolt is assembled on the outer end of the airflow channel 20. The stud 25 passes through the first sealing washer 24 and extends into the airflow channel 20. The nut 26 is tightened to press the first sealing washer 24 tightly on the outer end of the airflow channel 20 to achieve a reliable seal of the gas storage chamber after inflation. The assembled spring 23 is in a compressed state. One end of the spring 23 abuts against the end face of the bolt, and the other end abuts against the outer surface of the sealing ball 22 to provide elastic sealing force. The spherical surface of the sealing ball 22 protrudes into the interior of the vent hole 29 in a partially embedded manner, initially blocking the airflow channel 20. At the same time, under the action of the elastic force of the spring 23, the sealing ball 22 presses the second sealing gasket 21 tightly against the inner end of the airflow channel 20. The second sealing gasket 21 can completely cover the vent hole 29, forming a double seal, effectively preventing gas from leaking through the vent hole 29, and at the same time preventing humid air from entering the gas storage chamber from the vent hole 29, ensuring the gas storage chamber is sealed. During the use of the lamp housing 1, factors such as temperature changes and external pressure may cause the gas pressure inside the gas storage chamber to rise. When the gas pressure inside the gas storage chamber rises and the gas pressure on the sealing ball 22 exceeds the elastic force of the spring 23, the sealing ball 22 overcomes the elastic force of the spring 23 and moves towards the outer end of the airflow channel 20. At this time, the airflow channel 20 and the exhaust channel 210 are connected, and the gas is discharged from the exhaust channel 210. When the gas pressure inside the gas storage chamber drops and returns to the normal level, the spring 23 pushes the sealing ball 22 back to the initial position through its own elastic restoring force, so that the sealing ball 22 re-seals the airflow channel 20 and presses the second sealing gasket 21 tightly against the inner end of the airflow channel 20 again. Therefore, the elastic sealing component 2 can ensure that the gas storage chamber is sealed, effectively preventing nitrogen leakage inside the gas storage chamber, while also preventing humid air from entering the gas storage chamber.

[0015] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A fog-proof vehicle light, characterized in that, The lamp housing includes a hollow interior to form a gas storage cavity. One end of the lamp housing is provided with an airflow channel and an elastic sealing component, and the airflow channel is connected to the gas storage cavity. The elastic sealing assembly includes a bolt, a spring, and a sealing ball. The bolt is assembled at the outer end of the airflow channel and has an exhaust channel that communicates with the airflow channel. The sealing ball is movably disposed inside the airflow channel. One end of the spring abuts against the end face of the bolt, and the other end abuts against the outer surface of the sealing ball, so that the sealing ball tightly seals and blocks the airflow channel.

2. The anti-fog vehicle light according to claim 1, characterized in that, The bolt includes a stud and a nut, the venting channel extends axially through the stud, and the nut has at least one venting groove.

3. The anti-fog vehicle light according to claim 2, characterized in that, The nut is fitted with a waterproof and breathable membrane inside.

4. A fog-proof vehicle light according to claim 2, characterized in that, The elastic sealing assembly also includes a first sealing washer, a stud that passes through the first sealing washer and extends into the airflow channel, and a nut that presses the first sealing washer tightly against the outer end of the airflow channel.

5. A fog-proof vehicle light according to claim 4, characterized in that, The elastic sealing assembly also includes a second sealing gasket, which is assembled inside the airflow channel, and the sealing ball presses the second sealing gasket tightly against the inner end of the airflow channel.

6. A fog-proof vehicle light according to claim 5, characterized in that, The airflow channel is provided with a vent hole, the diameter of which is smaller than the outer diameter of the second sealing gasket.

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