Drying device and vehicle lamp

Abstract

The utility model provides a drying device and a car lamp, the drying device is used for being matched with the car lamp, the drying device comprises a shell, the shell is provided with an airflow channel used for communicating the internal space and the external space of the car lamp, and one side of the shell is provided with a vent hole communicated with the airflow channel; the sealing element is at least partially arranged in the vent hole and seals the vent hole; when the air pressure of the internal space is larger than the preset air pressure, the sealing piece is converted from the first state to the second state, so that the vent hole is opened. When the air pressure of the internal space is smaller than the preset air pressure, the sealing piece is converted into the first state from the second state so that the vent hole can be sealed. The automobile lamp solves the problem that an elastic cross piece cannot effectively block the automobile lamp after moisture is discharged out of the interior of the automobile lamp.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle lamp drying, in particular to a drying device and a vehicle lamp. Background Art

[0002] In the automobile manufacturing industry, headlights are an important part of vehicles, not only providing lighting functions, but also serving as safety warnings. When the headlights are turned on in cold areas or turned off after long-term use, the water vapor in the air inside the headlights will condense into fog due to the temperature difference between the inside and outside of the headlights. Fogging of the headlights will reduce the lighting effect and may also pose a threat to driving safety. Therefore, controlling the moisture inside the headlights is the key to improving the performance and safety of the headlights.

[0003] In the prior art, an elastic cross-piece is provided at the air inlet of the anti-fog device, and the ventilation function is realized through its deformation, thereby discharging the moisture inside the headlight. However, the elastic cross-piece cannot effectively block the headlight after the moisture is discharged from the headlight. As a result, after the moisture is discharged from the headlight, the external moisture and impurities, dust and other pollutants in the air will enter the headlight through the cross-piece, thereby affecting the performance of the headlight and causing a poor user experience. Utility Model Content

[0004] The problem solved by the utility model is that the elastic cross piece cannot effectively block the headlight after the moisture is discharged from the headlight. As a result, after the moisture is discharged from the headlight, the external moisture and impurities, dust and other pollutants in the air will enter the headlight through the cross piece, thereby affecting the performance of the headlight and making the user experience poor.

[0005] In order to solve the above-mentioned problems, the utility model provides a drying device, which is used to cooperate with a car lamp, and the drying device includes: a shell, the shell is provided with an air flow channel for connecting the internal space and the external space of the car lamp, and one side of the shell is provided with an air vent connected to the air flow channel; a sealing member, the sealing member is at least partially arranged in the air vent and seals the air vent; wherein, when the air pressure in the internal space is greater than a preset air pressure, the sealing member changes from a first state to a second state to open the air vent; when the air pressure in the internal space is less than the preset air pressure, the sealing member changes from the second state to the first state to seal the air vent.

[0006] Compared with the prior art, the technical effects achieved by adopting the technical solution are as follows: the drying device is installed on the headlight and exhausts air through the air flow channel connecting the internal space and the external space; the sealing member is arranged at the vent hole, and when the sealing member is in the first state, the sealing member seals the vent hole; when the headlight is turned on, the temperature of the internal space rises, and the air pressure in the internal space is greater than the air pressure in the external space. When the air pressure in the internal space of the headlight is greater than the preset air pressure, the sealing member will be squeezed by the air pressure in the internal space and will be changed from the first state to the second state to open the vent hole. At this time, the high-temperature and high-pressure moisture in the internal space will be discharged from the air flow channel and the vent hole to the external space, so that the temperature of the internal space is reduced, and the problem of fogging inside the headlight due to the temperature difference between the internal space and the external space is prevented; when the headlight is turned off, the temperature of the internal space is reduced, the sealing member is changed from the second state to the first state, and the sealing member seals the vent hole, thereby isolating the internal space from the external space, and preventing moisture in the external space and impurities and dust in the air from entering the internal space. The seal can discharge high-temperature and high-humidity gases in the interior space of the headlight in time according to the air pressure inside the headlight, effectively preventing the formation of fog inside the headlight and ensuring the clarity and safety of the headlight. At the same time, the seal can also seal the vents when the headlight is turned off, preventing moisture, impurities and dust in the external space from entering the interior of the headlight, keeping the interior of the headlight dry and clean.

[0007] Furthermore, the sealing member includes: a sealing portion, which is disposed in the vent hole; wherein, when the sealing member is in a first state, the sealing portion and the vent hole are interference fit to seal the vent hole.

[0008] Compared with the prior art, the technical effect achieved by adopting this technical solution is as follows: the sealing part and the vent hole have an interference fit, so that the sealing part and the inner wall of the vent hole fit tightly, thereby improving the sealing performance of the seal and ensuring that moisture, impurities, dust and other dirt in the external space cannot enter the interior of the headlight.

[0009] Furthermore, the sealing member includes a flange portion, which is arranged on a side of the sealing member away from the vent hole and protrudes relative to the edge of the sealing member; a mounting groove is provided at a position of the shell corresponding to the vent hole, and a shape of the mounting groove is adapted to the flange portion; when the sealing member is arranged in the vent hole, the flange portion is arranged in the mounting groove.

[0010] Compared with the prior art, the technical effects achieved by adopting this technical solution are as follows: the mutual cooperation between the flange part and the mounting groove further enhances the sealing between the seal and the shell; when the flange part is fully embedded in the mounting groove, a continuous, gap-free sealing surface is formed between the seal and the shell, effectively blocking external pollutants such as moisture and dust from entering the interior of the car lamp; and the flange part also provides additional fixing force for the seal, effectively preventing the seal from loosening or falling off due to vibration or external force during use; finally, the adaptation design of the flange part and the mounting groove makes the installation and removal process of the seal simple and quick.

[0011] Furthermore, the shell includes: a groove, which is arranged on one side of the mounting groove and is connected to the mounting groove; wherein, when the seal changes from the first state to the second state, a gap is formed between the sealing portion and the vent hole, and the flange portion is squeezed and deformed inward to open the vent hole; at this time, the gas in the internal space passes through the airflow channel, the vent hole, the mounting groove and the groove in sequence, and is discharged to the external space.

[0012] Compared with the prior art, the technical effect achieved by adopting this technical solution is as follows: when the air pressure in the internal space of the headlight increases and drives the seal to change from the first state to the second state, a gap is formed between the seal and the vent under the pressure of the internal air pressure, and the flange is squeezed and deformed inward by the pressure of the internal air pressure; at this time, the air in the internal space can pass through the air flow channel, the vent, the mounting groove, and finally be discharged to the external space through the groove. The existence of the groove provides additional space for the inward compression deformation of the flange. When the internal air pressure increases, the flange can respond and deform faster, thereby opening the vent earlier.

[0013] Furthermore, the drying device includes: a first cover plate, the first cover plate is fixed to a side of the shell provided with a vent hole, the first cover plate is provided with a first through hole, the first through hole is connected to the vent hole; a first breathable membrane, the first breathable membrane covers the first through hole to isolate moisture in the external space from entering the drying device.

[0014] Compared with the prior art, the technical effects achieved by adopting this technical solution are as follows: the first cover plate is arranged on one side of the vent, which can protect the vent and the seal and prevent damage to the seal caused by the external space; the first breathable membrane can prevent moisture in the external space from penetrating into the drying device through the vent, thereby ensuring the dryness of the internal environment of the headlight.

[0015] Furthermore, the shell comprises: an accommodating groove, which is arranged on a side of the shell away from the vent hole, and a drying element is arranged in the accommodating groove.

[0016] Compared with the prior art, the technical effect achieved by adopting this technical solution is that the drying component arranged in the accommodating groove can effectively absorb and remove moisture in the internal space of the headlight. By placing the drying component in the accommodating groove, it can be ensured that it maintains close contact with the internal space of the headlight, thereby more efficiently absorbing and removing moisture and maintaining a dry environment inside the headlight.

[0017] Furthermore, the drying device includes: a second cover plate, the second cover plate is fixed to a side of the shell provided with a receiving groove, and the second cover plate is provided with a second through hole; a second breathable membrane, the second breathable membrane is provided between the second cover plate and the receiving groove and covers the second through hole.

[0018] Compared with the prior art, the technical effect achieved by adopting this technical solution is that the second cover is fixed to the side of the housing provided with the receiving groove, providing protection and fixation for the drying element in the receiving groove. At the same time, the second air permeable covers the second through hole, preventing moisture in the internal space from directly entering the interior of the drying device.

[0019] Furthermore, the shell includes: a clamping portion, which is arranged on the outer wall of the shell and is used to rotatably clamp the drying device to the vehicle lamp.

[0020] Compared with the prior art, the technical effect achieved by adopting this technical solution is as follows: the drying device and the vehicle lamp are rotatably connected by means of the connecting portion, which simplifies the installation steps and improves the installation efficiency.

[0021] Furthermore, the drying device comprises: a sealing ring, which is sleeved on the outer wall of the shell.

[0022] Compared with the prior art, the technical effect achieved by adopting this technical solution is as follows: the sealing ring is arranged between the shell and the headlight to prevent external moisture, dust and other pollutants from penetrating into the internal space of the headlight through the gap between the shell and the headlight, thereby ensuring the dryness and cleanliness of the internal environment of the headlight.

[0023] The utility model also provides a vehicle lamp, which comprises a drying device according to any one of the above technical solutions.

[0024] After adopting the technical solution of the utility model, the following technical effects can be achieved:

[0025] The seal can discharge high-temperature and high-humidity gases in the interior space of the headlight in time according to the air pressure inside the headlight, effectively preventing the formation of fog inside the headlight and ensuring the clarity and safety of the headlight. At the same time, the seal can also seal the vents when the headlight is turned off, preventing moisture, impurities and dust in the external space from entering the interior of the headlight, keeping the interior of the headlight dry and clean. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 An exploded diagram of a drying device provided in an embodiment of the utility model;

[0027] Figure 2 A front view of a drying device provided by an embodiment of the utility model;

[0028] Figure 3 for Figure 2 Sectional view at AA in the middle;

[0029] Figure 4 for Figure 2 Sectional view at the middle BB;

[0030] Figure 5 A front view of a seal provided by an embodiment of the utility model;

[0031] Figure 6 for Figure 5 Sectional view at CC;

[0032] Figure 7 This is a schematic structural diagram of a drying device provided in an embodiment of the utility model.

[0033] Description of reference numerals:

[0034] 100, shell; 110, air flow channel; 111, vent; 120, mounting groove; 121, groove; 130, clamping part; 200, sealing member; 210, sealing part; 220, flange part; 300, first cover plate; 310, first through hole; 320, first breathable membrane; 400, second cover plate; 410, second through hole; 420, second breathable membrane; 500, drying member; 600, sealing ring. DETAILED DESCRIPTION

[0035] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and understandable, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0036] The utility model provides a drying device, which is used to cooperate with a vehicle lamp, such as Figure 1 As shown, the drying device includes a shell 100 and a sealing member 200; the shell 100 is provided with an air flow channel 110 for connecting the internal space and the external space of the vehicle lamp, and one side of the shell 100 is provided with an air vent 111 connected to the air flow channel 110; the sealing member 200, the sealing member 200 is at least partially arranged in the air vent 111, and seals the air vent 111; wherein, when the air pressure of the internal space is greater than the preset air pressure, the sealing member 200 changes from the first state to the second state to open the air vent 111; when the air pressure of the internal space is less than the preset air pressure, the sealing member 200 changes from the second state to the first state to seal the air vent 111.

[0037] Specifically, the headlight includes a headlight housing having an internal space therein; the headlight housing is provided with a mounting hole for installing a drying device; the drying device is installed on the mounting hole and seals the internal space of the headlight; and the drying device is provided with a vent 111 on one side thereof facing the external space and the other side thereof facing the internal space; the drying device is provided with an air flow channel 110 for connecting the internal space and the external space so as to exchange airflow between the internal space and the external space.

[0038] Specifically, the seal 200 is at least partially disposed in the vent 111. When the seal 200 is in a first state, the seal 200 seals the vent 111 to close the air flow channel 110. When the air pressure in the internal space of the headlight is greater than or equal to a preset air pressure, the seal 200 changes from the first state to the second state to open the vent 111.

[0039] Preferably, the preset air pressure is the minimum air pressure for the seal to change from the first state to the second state. In this embodiment, the preset air pressure is set to 150Pa. The specific value of the preset air pressure can be adjusted by technical personnel in this field by changing the material, shape, etc. of the seal.

[0040] Further, such as Figure 5 and Figure 6 As shown, the sealing member 200 includes a sealing portion 210 , which is disposed in the vent hole 111 ; wherein, when the sealing member 200 is in a first state, the sealing portion 210 is interference fit with the vent hole 111 to seal the vent hole 111 .

[0041] Specific, combined Figure 3 As shown, in this embodiment, the shape of the sealing portion 210 is cylindrical.

[0042] Furthermore, the sealing member 200 includes a flange portion 220, which is disposed on a side of the sealing member 210 away from the vent hole 111 and protrudes relative to the edge of the sealing member 210; the housing 100 is provided with an installation groove 120 at a position corresponding to the vent hole 111, and the shape of the installation groove 120 is adapted to the flange portion 220; when the sealing member 210 is disposed in the vent hole 111, the flange portion 220 is disposed in the installation groove 120.

[0043] Specifically, when the sealing portion 210 is disposed in the vent hole 111, the flange portion 220 is disposed in the mounting groove 120. When the sealing component 200 is in the first state, the flange portion 220 is embedded in the mounting groove 120, and the flange portion 220 abuts against the mounting groove 120 to form a sealing structure. Through the cooperation between the flange portion 220 and the mounting groove 120, the sealing component 200 has a better sealing effect when it is in the first state, thereby blocking external pollutants such as moisture and dust from entering the interior of the car lamp.

[0044] Furthermore, the shell 100 includes a groove 121, which is arranged on one side of the mounting groove 120 and is connected to the mounting groove 120; wherein, when the seal 200 changes from the first state to the second state, a gap is formed between the sealing portion 210 and the vent 111, and the flange portion 220 is squeezed and deformed inward to open the vent 111; at this time, the gas in the internal space passes through the air flow channel 110, the vent 111, the mounting groove 120 and the groove 121 in turn, and is discharged to the external space.

[0045] Specifically, when the air pressure in the interior space of the headlight is greater than or equal to the preset air pressure, the air pressure in the interior space of the headlight squeezes the seal 200 through the air flow channel 110, and a gap is generated between the seal 210 and the inner wall of the vent 111 under the squeezing of the air pressure, and under the action of the air pressure, the flange portion 220 and the groove are squeezed and deformed inward toward the corresponding positions and the vent 111 is opened. At this time, the seal 200 is in the second state, the vent is open, and the high-temperature and high-humidity gas in the internal space can be discharged to the external space through the air flow channel 110, the vent 111, the mounting groove 120, and the groove 121.

[0046] Preferably, in the present embodiment, the number of the grooves 121 is two, and the two grooves 121 are respectively arranged on both sides of the mounting groove 120; the depth direction is from one side of the housing 100 where the vent hole 111 is arranged to the corresponding other side, and the depth of the groove 121 is lower than the depth of the mounting groove 120. When the seal 200 is in the first state, the flange portion 220 is embedded in the mounting groove 120, and the flange portion 220 is abutted against the mounting groove 120, and at this time, the groove 121 is not connected to the mounting groove 120; when the seal 200 is in the second state, the flange portion 220 is squeezed and deformed inwardly, so that the groove 121 is connected to the mounting groove 120 to open the vent hole 111.

[0047] Preferably, the seal 200 can be made entirely of elastic materials such as rubber or silicone, so that when the air pressure in the internal space is greater than a preset air pressure, the seal 200 can be transformed from the first state to the second state.

[0048] Further, such as Figure 2 and Figure 7 As shown, the drying device includes a first cover plate 300 and a first breathable membrane 320; the first cover plate 300 is fixed to a side of the shell 100 where the vent hole 111 is provided, and the first cover plate 300 is provided with a first through hole 310, which is connected to the vent hole 111; the first breathable membrane 320 covers the first through hole 310 to isolate moisture in the external space from entering the drying device.

[0049] Specifically, the first cover plate 300 is provided with a first through hole 310, and a first air flow channel (not shown in the figure) is also provided on the side of the first cover plate 300 facing the shell 100. The first air flow channel is connected to the first through hole 310 and the vent hole 111 respectively. When the seal 200 is in the second state, the gas in the internal space can be discharged to the external space through the air flow channel 110, the vent hole 111, the installation groove 120, the groove 121, the first air flow channel, and the first through hole 310.

[0050] Specifically, the first cover plate 300 and the housing 100 are fixed by snapping.

[0051] Specifically, the first breathable membrane 320 is covered on the first through hole 310 , and the gas in the external space enters the drying device through the first through hole 310 , and the first breathable membrane 320 can prevent moisture from entering.

[0052] Further, such as Figure 4 As shown, the housing 100 includes a receiving groove, which is arranged on a side of the housing 100 away from the vent hole 111 , and a drying element 500 is arranged in the receiving groove.

[0053] Specifically, the accommodating groove is arranged toward the internal space and is communicated with the internal space. A drying element 500 is arranged in the accommodating groove. The drying element 500 can dry the moisture in the internal space and reduce the dew point temperature so as to further prevent the vehicle lights from fogging.

[0054] Furthermore, the drying device includes a second cover plate 400 and a second breathable membrane 420; the second cover plate 400 is fixed to a side of the shell 100 where a receiving groove is provided, and a second through hole 410 is provided on the second cover plate 400; the second breathable membrane 420 is provided between the second cover plate 400 and the receiving groove, and the second breathable membrane 420 covers the second through hole 410.

[0055] Specifically, the second cover plate 400 is provided with a second through hole 410 , and a second air flow channel is further provided on a side of the second cover plate 400 facing the housing 100 , and the second air flow channel is respectively connected to the second through hole 410 and the air flow channel 110 .

[0056] Furthermore, the housing 100 includes a clamping portion 130 , which is disposed on an outer wall of the housing 100 , and is used to rotatably clamp the drying device to the vehicle lamp.

[0057] Furthermore, the drying device includes a sealing ring 600 , which is sleeved on the outer wall of the housing 100 .

[0058] Specifically, when the drying device is installed on the headlight, the sealing ring 600 is arranged between the drying device and the headlight housing to seal the mounting hole of the headlight housing to prevent moisture in the external space from entering the internal space through the gap between the mounting hole and the drying device.

[0059] This embodiment also provides a vehicle lamp, which includes a drying device as described in any one of the above embodiments.

[0060] Although the utility model is disclosed as above, the utility model is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the utility model. Therefore, the protection scope of the utility model shall be subject to the scope defined by the claims.

Claims

1. A drying device, which is used in conjunction with a vehicle lamp, characterized in that: The drying device comprises: A housing (100), the housing (100) being provided with an air flow channel (110) for connecting the internal space and the external space of the vehicle lamp, and a vent hole (111) communicating with the air flow channel (110) being provided on one side of the housing (100); a sealing member (200), wherein the sealing member (200) is at least partially disposed in the vent hole (111) and seals the vent hole (111); Wherein, when the air pressure in the internal space is greater than a preset air pressure, the sealing member (200) changes from the first state to the second state, so that the vent hole (111) is opened; When the air pressure in the internal space is lower than the preset air pressure, the sealing member (200) changes from the second state to the first state, so that the vent hole (111) is sealed.

2. The drying device according to claim 1, characterized in that: The sealing element (200) comprises: a sealing portion (210), the sealing portion (210) being arranged in the vent hole (111); Wherein, when the sealing member (200) is in the first state, the sealing portion (210) is interference-fitted with the vent hole (111) to seal the vent hole (111).

3. The drying device according to claim 2, characterized in that: The sealing member (200) comprises a flange portion (220), wherein the flange portion (220) is arranged on a side of the sealing portion (210) away from the vent hole (111) and protrudes relative to an edge of the sealing portion (210); The housing (100) is provided with a mounting groove (120) at a position corresponding to the vent hole (111), and the shape of the mounting groove (120) is adapted to the flange portion (220); When the sealing portion (210) is disposed in the vent hole (111), the flange portion (220) is disposed in the mounting groove (120).

4. The drying device according to claim 3, characterized in that: The housing (100) comprises: a groove (121), the groove (121) being arranged on one side of the mounting groove (120) and being in communication with the mounting groove (120); Wherein, when the sealing member (200) changes from the first state to the second state, a gap is formed between the sealing portion (210) and the vent hole (111), and the flange portion (220) is squeezed and deformed inwardly, so that the vent hole (111) is opened; At this time, the gas in the internal space passes through the air flow channel (110), the vent hole (111), the installation groove (120) and the groove (121) in sequence, and is discharged to the external space.

5. The drying device according to claim 1, characterized in that: The drying device comprises: a first cover plate (300), the first cover plate (300) being fixed to a side of the shell (100) on which the vent hole (111) is provided, the first cover plate (300) being provided with a first through hole (310), the first through hole (310) being in communication with the vent hole (111); A first breathable membrane (320), wherein the first breathable membrane (320) is covered on the first through hole (310) to prevent moisture in the external space from entering the drying device.

6. The drying device according to claim 1, characterized in that: The housing (100) comprises: An accommodating groove, the accommodating groove being arranged on a side of the housing (100) away from the vent hole (111), and a drying element (500) being arranged in the accommodating groove.

7. The drying device according to claim 6, characterized in that: The drying device comprises: a second cover plate (400), the second cover plate (400) being fixed to a side of the housing (100) provided with the accommodating groove, and the second cover plate (400) being provided with a second through hole (410); A second breathable membrane (420), wherein the second breathable membrane (420) is disposed between the second cover plate (400) and the accommodating groove, and the second breathable membrane (420) covers the second through hole (410).

8. The drying device according to claim 1, characterized in that: The housing (100) comprises: A clamping portion (130), the clamping portion (130) being arranged on the outer wall of the housing (100), and the clamping portion (130) being used to rotatably clamp the drying device to the vehicle lamp.

9. The drying device according to claim 1, characterized in that: The drying device comprises: A sealing ring (600), wherein the sealing ring (600) is sleeved on the outer wall of the housing (100).

10. A vehicle lamp, characterized in that: The vehicle lamp comprises a drying device as claimed in any one of claims 1 to 9.

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