Moisture absorbing device and luminaire

Abstract

The utility model relates to air flow subassembly technical field, especially a kind of moisture-absorbing device, the moisture-absorbing device includes accommodating cavity and installation cavity;Air flow subassembly includes support, first flexible valve and second flexible valve, support is provided with concentric first through-hole group and second through-hole group, second through-hole group is arranged around first through-hole group;First flexible valve blocks second through-hole group, and second flexible valve blocks first through-hole group.By the cooperation of the two through-hole groups and two flexible valves of concentric arrangement, the air inlet and exhaust path of moisture-absorbing device are guided, the pressure required when the external air opens the first flexible valve with smaller opening diameter is larger, and the pressure required when the internal air opens the second flexible valve with larger opening diameter is smaller, thereby reducing the amount of external air with moisture, improving the moisture-absorbing effect of moisture-absorbing device and prolonging its service life.The utility model further provides a lamp, which includes the above-mentioned moisture-absorbing device.

Description

Technical Field

[0001] This utility model relates to the field of airflow component technology, and in particular to a moisture absorption device and a lamp. Background Technology

[0002] Cars are an important means of transportation for people today, and car lights are an essential component for driving at night or in bad weather. Because car lights need to have ventilation structures to balance the pressure difference between the inside and outside of the car and prevent the lights from being damaged due to excessive pressure, moisture in the air may enter the inside of the headlight cover through the ventilation holes, causing the headlights to fog up or condense.

[0003] To avoid frequent fogging or condensation inside vehicle headlights, there are currently solutions that use desiccant-based desiccant devices in the headlights. However, the desiccant, which plays a major role in desiccant absorption, has a limited lifespan, requiring users to frequently replace the desiccant device to maintain its effectiveness, which is inconvenient. Utility Model Content

[0004] To address the problem of the need for frequent replacement of existing moisture-absorbing devices to ensure their effectiveness, this utility model provides a moisture-absorbing device and a lamp.

[0005] The present invention provides a moisture-absorbing device, comprising a housing with a receiving cavity and an installation cavity respectively formed on opposite sides of the housing; a central column is disposed within the receiving cavity, the central column being hollow and forming a channel communicating with the installation cavity; and an airflow assembly comprising a support member, a first flexible valve, and a second flexible valve; the support member is disposed within the installation cavity, and the support member has a first through-hole group and a second through-hole group surrounding the central column, the first through-hole group surrounding the second through-hole group; the first flexible valve is disposed on the side of the support member closer to the central column, and the second flexible valve is disposed on the side of the support member away from the central column; the first flexible valve blocks the second through-hole group, the second flexible valve blocks the first through-hole group, and a valve vent is formed corresponding to the second through-hole group.

[0006] Preferably, the first through-hole group includes at least four first through-holes of equal diameter, and the second through-hole group includes at least four second through-holes of equal diameter; the diameter of the first through-hole is larger than the diameter of the second through-hole.

[0007] Preferably, at least one fixing member is provided at each end of the support member, and at least one fixing hole is provided for the first flexible valve and the second flexible valve respectively corresponding to the fixing member; the first flexible valve and the second flexible valve are fixed to the support member by passing through the fixing member and the fixing hole.

[0008] Preferably, the first flexible valve includes a first silicone sheet and a first clamping plate, the first silicone sheet being located between the first clamping plate and the support member; the second flexible valve includes a second silicone sheet and a second clamping plate, the second silicone sheet being located between the second clamping plate and the support member.

[0009] Preferably, the support member has first grooves at both ends, and the first flexible valve is accommodated in the first grooves; the bottom wall of the mounting cavity is provided with a first convex ring, which abuts against the bottom wall of the first groove to form a first cavity.

[0010] Preferably, the support member is further provided with a second groove at both ends, and the second flexible valve is accommodated in the second groove; the edge of the second silicone sheet is bent away from the support member to form a curved section, and the second groove is provided with an arc-shaped section with an inner wall corresponding to the curved section.

[0011] Preferably, at least one reinforcing rib is provided inside the accommodating cavity, and the reinforcing rib is connected to the central column.

[0012] Preferably, the port of the accommodating cavity is provided with a first breathable membrane, and the first breathable membrane has a membrane vent hole corresponding to the central column; the port of the mounting cavity is provided with a second breathable membrane; the end of the mounting cavity away from the central column extends horizontally and forms a first mounting part and a second mounting part for mounting the support member, and the second breathable membrane is disposed in the first mounting part.

[0013] Preferably, a second protrusion is provided on the bottom wall of the first mounting part, the second protrusion supports the second breathable membrane, and a second cavity is formed between the second breathable membrane, the mounting cavity and the airflow assembly.

[0014] This utility model also provides a lamp, including a moisture-absorbing device and a lamp body as described above, wherein the moisture-absorbing device is connected to the lamp body and is disposed at one end away from the light-emitting direction of the lamp body.

[0015] Compared with the prior art, the moisture absorption device and lamp of this utility model have the following advantages: 1. The moisture-absorbing device of this utility model includes a shell and an airflow assembly. The shell includes a receiving cavity and a mounting cavity. The airflow assembly includes a support member, a first flexible valve, and a second flexible valve. The support member is provided with a concentric first through-hole group and a second through-hole group, with the second through-hole group surrounding the first through-hole group. The first flexible valve blocks the second through-hole group, and the second flexible valve blocks the first through-hole group and has a corresponding vent hole. Through the cooperation of the two concentric through-hole groups and the two flexible valves, the air intake and exhaust paths of the moisture-absorbing device are guided. The external air requires a higher pressure to open the smaller diameter first flexible valve, while the internal air requires a lower pressure to open the larger diameter second flexible valve. This reduces the amount of humid external air entering, improves the moisture absorption effect of the moisture-absorbing device, extends its service life, and reduces the frequency of user replacement of the moisture-absorbing device.

[0016] 2. The first through-hole group of this utility model includes at least four first through-holes of equal diameter, and the second through-hole group includes at least four second through-holes of equal diameter; the diameter of the first through-hole is larger than the diameter of the second through-hole. By setting the number of through-holes, the uniformity of the airflow pressure distribution on the flexible valve and the pressure at a single point are improved, avoiding the flexible valve from being misaligned or damaged due to excessive pressure on one side, thus improving the performance and service life of the two flexible valves.

[0017] 3. At least one fixing member is provided at each end of the support member of this utility model, and the two flexible valves are respectively provided with fixing holes corresponding to the fixing members; the first flexible valve and the second flexible valve are connected and fixed to the support member through the fixing members and fixing holes. The cooperation between the fixing members and fixing holes improves the connection stability of the two flexible valves fixed to the support member and prevents the flexible valves from falling off during use, which would weaken the moisture absorption effect of the moisture absorption device.

[0018] 4. The first flexible valve of this utility model includes a first silicone sheet and a first clamping plate, and the second flexible valve includes a second silicone sheet and a second clamping plate. By setting two clamping plates, while ensuring the connection stability between the two silicone sheets and the support, the thickness of the silicone sheets can be appropriately reduced to prevent airflow blockage due to pressure being less than the opening pressure of the silicone sheets, thus affecting the gas exchange effect of the moisture absorption device.

[0019] 5. The support member of this utility model has first grooves at both ends, and the first flexible valve is accommodated in the first groove; the bottom wall of the mounting cavity is provided with a first convex ring, which abuts against the bottom wall of the first groove to form a first cavity. The first cavity provides space for internal air to enter the airflow assembly from the central column, avoiding the support member from blocking the path of the exhaust gas and hindering the exhaust of the moisture absorption device.

[0020] 6. The support member of this utility model is further provided with second grooves at both ends, and the second flexible valve is accommodated in the second grooves; the edge of the second silicone sheet is bent away from the support member to form a curved section, and the second groove is provided with an arc-shaped section with an inner wall of arc surface corresponding to the curved section. Through the setting of the curved section and the arc-shaped section, the internal air flows along the curved section after passing through the first through hole group, which is conducive to the internal air pushing open the edge of the second silicone sheet, reducing the resistance of the exhaust of the moisture absorption device and improving the gas exchange efficiency.

[0021] 7. The cavity of this utility model is also provided with at least one reinforcing rib, which is connected to the central column, providing internal support for the cavity, improving the pressure bearing capacity of the cavity, and reducing the deformation of the cavity.

[0022] 8. The accommodating cavity of this utility model is provided with a first breathable membrane at its port, and the first breathable membrane has a membrane vent hole corresponding to the central column; the mounting cavity is provided with a second breathable membrane at its port; the end of the mounting cavity away from the central column extends horizontally and forms a first mounting part and a second mounting part of the mounting support, and the second breathable membrane is disposed in the first mounting part. By providing breathable membranes at both ends of the moisture absorption device, dust and other debris that may enter the moisture absorption device are blocked while ensuring gas flow at both ends, thus avoiding the situation where the moisture absorption device is blocked by debris and cannot achieve the gas exchange function.

[0023] 9. A second protruding ring is provided on the bottom wall of the first mounting part of this utility model. The second protruding ring supports the second breathable membrane, and a second cavity is formed between the mounting cavity of the second breathable membrane and the airflow assembly. Through the provision of the second cavity, the air discharged from the first through-hole group is buffered within the second cavity, preventing excessive air pressure between the second breathable membrane and the second flexible valve, which could cause the second breathable membrane to bulge away from the airflow assembly, thereby damaging and reducing the service life of the second breathable membrane.

[0024] 10. This utility model also provides a lamp, including a moisture-absorbing device and a lamp body. The moisture-absorbing device is connected to the lamp body and is located at the end away from the light-emitting direction of the lamp body. It has the same beneficial effects as the moisture-absorbing device described above, and will not be described in detail here. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model, 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.

[0026] Figure 1This is a three-dimensional structural diagram of the moisture-absorbing device provided in the first embodiment of this utility model.

[0027] Figure 2 This is a cross-sectional schematic diagram of the moisture-absorbing device provided in the first embodiment of this utility model.

[0028] Figure 3 This is an exploded structural diagram of the moisture-absorbing device provided in the first embodiment of this utility model.

[0029] Figure 4 This is a partial three-dimensional structural diagram of the housing of the moisture-absorbing device provided in the first embodiment of this utility model. Figure 1 .

[0030] Figure 5 This is a partial three-dimensional structural diagram of the housing of the moisture-absorbing device provided in the first embodiment of this utility model. Figure 2 .

[0031] Figure 6 This is a three-dimensional structural diagram of the airflow component of the moisture absorption device provided in the first embodiment of this utility model. Figure 1 .

[0032] Figure 7 This is a three-dimensional structural diagram of the airflow component of the moisture absorption device provided in the first embodiment of this utility model. Figure 2 .

[0033] Figure 8 This is an exploded structural diagram of the airflow component of the moisture absorption device provided in the first embodiment of this utility model.

[0034] Figure 9 This is a block diagram of the lamp provided in the second embodiment of this utility model.

[0035] Explanation of reference numerals in the attached diagram: 1. Moisture absorption device; 2. Housing; 3. Airflow assembly; 4. Lighting fixture; 21. Receiving cavity; 22. Mounting cavity; 23. Sealing ring; 31. Support component; 32. First flexible valve; 33. Second flexible valve; 34. Fixing hole; 41. Lamp body; 211. Central column; 212. Channel; 213. First breathable membrane; 214. Reinforcing rib; 215. Membrane vent; 221. First mounting part; 222. First convex ring; 223. First cavity; 224. Second mounting part; 225. Second convex ring; 226. Second cavity; 227. Second breathable membrane; 311. First through hole group; 312. Second through hole group; 313. First groove; 314. Second groove; 315. Fixing member; 321. First silicone sheet; 322. First pressing plate; 331. Second silicone sheet; 332. Second pressing plate; 333. Valve vent. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the scope of the present utility model.

[0037] It should be noted that when a component is said to be "fixed to" another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0038] In this invention, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this invention and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0039] Furthermore, in addition to indicating direction or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this utility model according to the specific circumstances.

[0040] Furthermore, the terms "installation," "setup," "equipped with," "connection," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this utility model based on the specific circumstances.

[0041] Please see Figures 1-3The first embodiment of this utility model provides a moisture absorption device 1, including a housing 2, with a receiving cavity 21 and a mounting cavity 22 respectively opened on opposite sides of the housing 2; a central column 211 is disposed in the receiving cavity 21, the central column is hollow and forms a channel 212, the channel 212 communicates with the mounting cavity 22; an airflow assembly 3, the airflow assembly 3 including a support member 31, a first flexible valve 32 and a second flexible valve 33; the support member 31 is disposed in the mounting cavity 22, and the support member 31 surrounds the central column 211. The support member 31 is provided with a first through hole group 311 and a second through hole group 312, with the first through hole group 311 surrounding the second through hole group 312; a first flexible valve 32 is provided on the side of the support member 31 near the central column 211, and a second flexible valve 33 is provided on the side of the support member 31 away from the central column 211; the first flexible valve 32 blocks the second through hole group 312, the second flexible valve 33 blocks the first through hole group 311, and a valve vent hole 333 is opened corresponding to the second through hole group 312.

[0042] Specifically, in this embodiment, since the first through hole group 311 and the second through hole group 312 are opened around the central column 211, the first flexible valve 32 and the second flexible valve 33 are circular in shape.

[0043] Understandably, taking the first flexible valve 32 as an example, when the gas flows to it, it generates a certain pressure on the first flexible valve 32; when the gas pressure is greater than the opening force of the first flexible valve 32, the gas part pushes up the edge of the first flexible valve 32 and flows out of the airflow assembly 3.

[0044] Similarly, when the gas flows to the second flexible valve 33, it applies a pressure greater than the opening force to the second flexible valve 33 and then flows out of the airflow assembly 3 from the edge of the second flexible valve 33.

[0045] Understandably, the valve vent 333 provides an airflow channel for air flowing toward the first flexible valve 32, preventing the second flexible valve 33 from obstructing the airflow path in that direction.

[0046] Specifically, when the dehumidifying device 1 is installed on the vehicle lamp, the housing 2 has its accommodating cavity 21 side close to the inside of the vehicle lamp that needs to be kept dry, and its mounting cavity 22 side close to the outside air with higher humidity.

[0047] Understandably, since the first flexible valve 32 and the second flexible valve 33 respectively block the second through-hole group 312 and the first through-hole group 311, when the dehumidification device 1 performs gas exchange, the air inside the headlight passes through the first through-hole group 311 and is discharged from the dehumidification device 1 after opening the second flexible valve 33; the air outside the headlight passes through the second through-hole group 312 and enters the dehumidification device 1 after opening the first flexible valve 32.

[0048] Structural stiffness is the ability of a structure to resist deformation when subjected to external forces. It usually depends on factors such as the elastic modulus of the material, the structural form, and the size of the components. It comprehensively reflects the contribution of the elastic properties of the material, the cross-sectional characteristics of the components, and the geometric arrangement to resist the deformation caused by external forces.

[0049] Understandably, the second through-hole group 312 and the first through-hole group 311 respectively guide the airflow to the first flexible valve 32 and the second flexible valve 33 near their edges. At this time, the airflow exerts a thrust on the first flexible valve 32 and the second flexible valve 33 and causes them to bend and deform.

[0050] Since the first through-hole group 311 surrounds the second through-hole group 312, the diameter of the second flexible valve 33 is correspondingly larger than the diameter of the first flexible valve 32. When subjected to the same amount of thrust, the thrust has a longer lever arm on the second flexible valve 33 with a larger diameter, and the stress on the second flexible valve 33 increases accordingly, and the deformation is more obvious. That is, the structural stiffness of the second flexible valve 33 is less than the structural stiffness of the first flexible valve 32.

[0051] Understandably, since the structural stiffness of the second flexible valve 33 is less than that of the first flexible valve 32, the pressure required for external air to enter the airflow assembly 3 is greater than the pressure required for internal air to exit the airflow assembly 3. That is, it is more difficult for external air with moisture to enter the moisture absorption device 1, thereby reducing the amount of external moisture brought into the moisture absorption device 1 and improving the moisture absorption effect of the moisture absorption device 1.

[0052] Understandably, since the first flexible valve 32 prevents external air from entering the dehumidifying device 1, the amount of external air entering the dehumidifying device 1 is greatly reduced, and the amount of desiccant consumed by the dehumidifying device 1 to dehumidify the external air is also reduced accordingly. This reduces the frequency at which the user needs to replace the dehumidifying device 1, and improves the ease of use and service life of the dehumidifying device 1.

[0053] More specifically, in this embodiment, the housing 2 is also provided with a sealing ring 23 around the accommodating cavity 21, which helps to seal the gap at the connection when the moisture absorption device 1 is installed in the vehicle lamp, preventing the entry of external air with high humidity into the vehicle lamp through the gap, thereby reducing the moisture absorption effect of the moisture absorption device 1.

[0054] Furthermore, the first through-hole group 311 includes at least four first through-holes of equal diameter, and the second through-hole group 312 includes at least four second through-holes of equal diameter; the diameter of the first through-hole is larger than the diameter of the second through-hole.

[0055] Specifically, in this embodiment, the first through-hole group 311 includes four first through holes, and the second through-hole group 312 includes four second through holes.

[0056] Taking the first through-hole group 311 as an example, it can be understood that when the number of first through-holes in the first through-hole group 311 is small, the amount of air discharged from a single first through-hole is large, and the second flexible valve 33 near the first through-hole group 311 is prone to large unilateral pressure. When the first through-hole group 311 includes at least four first through-holes of equal diameter, the uniformity of airflow distribution through the first through-hole group 311 is improved, and large thrust is avoided at a single point on the second flexible valve 33. This avoids the second flexible valve 33 from undergoing unrecoverable positional displacement or even damage due to unilateral pressure, greatly improving the performance and service life of the second flexible valve 33.

[0057] Similarly, the second through-hole group 312 also achieves the effect of uniform airflow, which is beneficial to improving the performance and service life of the first flexible valve 32.

[0058] Furthermore, at least one fixing member 315 is provided at each end of the support member 31, and at least one fixing hole 34 is provided for the first flexible valve 32 and the second flexible valve 33 respectively corresponding to the fixing member 315; the first flexible valve 32 and the second flexible valve 33 are fixed to the support member 31 by the fixing member 315 and the fixing hole 34.

[0059] Understandably, the fastener 315 is surrounded by the first through-hole group 311 and the second through-hole group 312.

[0060] Specifically, in this embodiment, a fixing member 315 is provided at each end of the support member 31, and a fixing hole 34 is provided for the first flexible valve 32 and the second flexible valve 33 respectively corresponding to the fixing member 315.

[0061] Understandably, the cooperation between the fastener 315 and the fixing hole 34 improves the connection stability of the first flexible valve 32 and the second flexible valve 33 to the support 31, and avoids the first flexible valve 32 or the second flexible valve 33 from being displaced or even falling off due to the push of airflow pressure, which would prevent the corresponding second through hole group 312 or the first through hole group 311 from being blocked, thus causing the airflow assembly 3 to fail and the moisture absorption effect of the moisture absorption device 1 to weaken.

[0062] More specifically, in this embodiment, the top of the fastener 315 is a protrusion with a diameter larger than that of the fixing hole 34, and the first flexible valve 32 and the second flexible valve 33 are fixed to the fastener 315 by riveting or ultrasonic assembly.

[0063] Please see Figure 2 , Figure 3 and Figures 6-8Furthermore, the first flexible valve 32 includes a first silicone sheet 321 and a first pressing sheet 322, with the first silicone sheet 321 located between the first pressing sheet 322 and the support member 31; the second flexible valve 33 includes a second silicone sheet 331 and a second pressing sheet 332, with the second silicone sheet 331 located between the second pressing sheet 332 and the support member 31.

[0064] Specifically, in this embodiment, the first silicone sheet 321, the first clamping sheet 322, the second silicone sheet 331, and the second clamping sheet 332 each have a fixing hole 34 corresponding to the fixing member 315. Taking the first flexible valve 32 as an example, since the airflow needs to open the first flexible valve 32 to achieve airflow exchange, when the overall thickness of the first flexible valve 32 is large, the airflow may be unable to open the first flexible valve 32 and thus become blocked; when the overall thickness of the first flexible valve 32 is small, the pressure that the fixing member 315 needs to withstand during the gas exchange of the airflow assembly 3 is greater, and the connection between the fixing member 315 and the first flexible valve 32 is more likely to break due to excessive external force, causing the first flexible valve 32 to fall off the support member 31.

[0065] Understandably, on the one hand, the first clamping plate 322 presses the first silicone sheet 321 and prevents large deformation in the area where it is connected to the support member 31, thereby reducing the pressure exerted by the first flexible valve 32 on the support member 31 and improving the connection stability between the first flexible valve 32 and the support member 31; on the other hand, the thickness of the first silicone sheet 321 can be appropriately reduced to avoid the airflow being difficult to open due to the excessive thickness of the first silicone sheet 321, thus preventing blockage.

[0066] Similarly, the second pressing plate 332 and the second silicone sheet 331 have the same effect as the first pressing plate 322 and the first silicone sheet 321 in facilitating gas exchange in the airflow assembly 3.

[0067] Please see Figure 2-8 Furthermore, the support member 31 has a first groove 313 at both ends, and the first flexible valve 32 is accommodated in the first groove 313; the bottom wall of the mounting cavity 22 is provided with a first protrusion 222, which abuts against the bottom wall of the first groove 313 and forms a first cavity 223.

[0068] Understandably, since the internal air is discharged from the moisture-absorbing device 1 through the first through-hole group 311, and the first through-hole group 311 is opened around the second through-hole group 312, in order to facilitate the smooth entry of the air flowing out of the channel 212 into the first through-hole group 311, the diameter of the channel 212 needs to be increased accordingly to prevent the gas from being blocked by the support member 31 and unable to flow out.

[0069] Understandably, the first cavity 223 provides an entry space for air to enter the mounting cavity 22 from the channel 212, avoiding the situation where the support 31 blocks the exhaust gas; at the same time, it removes the restriction on the diameter of the channel 212, allowing the channel 212 to appropriately reduce its diameter, which is beneficial for the air entering the channel 212 to have a sufficient flow rate to open the second flexible valve 33 and exhaust the airflow assembly 3, thereby improving the gas exchange efficiency of the airflow assembly 3.

[0070] Furthermore, a desiccant is provided inside the accommodating cavity 21.

[0071] Understandably, a small portion of the outside air still passes through the airflow assembly 3 and enters the headlight. The desiccant in the accommodating cavity 21 facilitates the dehumidification device 1 to remove moisture from this portion of the air.

[0072] Understandably, the arrangement of the first cavity 223 helps the channel 212 to reduce its own diameter, which in turn helps the central column 211 to reduce its own diameter. That is, the space occupied by the central column 211 in the accommodating cavity 21 is reduced, and the maximum capacity of the desiccant that can be accommodated in the accommodating cavity 21 is correspondingly increased, which makes it easier to place more desiccant in the accommodating cavity 21, further enhancing the desiccant absorption effect of the desiccant device 1.

[0073] Furthermore, the support member 31 is provided with second grooves 314 at both ends, and the second flexible valve 33 is accommodated in the second grooves 314; the edge of the second silicone sheet 331 is bent away from the support member 31 to form a curved section, and the second groove 314 is provided with an arc-shaped section with an inner wall of arc surface corresponding to the curved section.

[0074] Understandably, when the internal air passes through the first through-hole group 311 and flows to the second flexible valve 33, the internal air flows along the gap between the curved section and the arc section, which is conducive to the gas flowing to the edge of the second silicone sheet 331 and being discharged, thus reducing the resistance of the moisture absorption device 1 to discharge the internal air and improving the gas exchange efficiency.

[0075] Furthermore, at least one reinforcing rib 214 is provided inside the accommodating cavity 21, and the reinforcing rib 214 is connected to the central column 211.

[0076] Understandably, the reinforcing rib 214 provides support for the accommodating cavity 21, improving its pressure-bearing capacity and resistance to deformation. The connection between the reinforcing rib 214 and the central column 211 improves the integrity of the reinforcing rib 214, and the mass distribution is closer to the center of the accommodating cavity 21, further reducing stress concentration and improving the pressure-bearing capacity of the accommodating cavity 21.

[0077] Specifically, in this embodiment, a reinforcing rib 214 is provided in the accommodating cavity 21, and the reinforcing rib 214 is connected to the central column 211.

[0078] Furthermore, the port of the accommodating cavity 21 is provided with a first breathable membrane 213, and the first breathable membrane 213 has a membrane vent 215 corresponding to the central column 211; the port of the mounting cavity 22 is provided with a second breathable membrane 227; the end of the mounting cavity 22 away from the central column 211 extends horizontally and forms a first mounting part 221 and a second mounting part 224 of the mounting support 31, and the second breathable membrane 227 is disposed in the first mounting part 221.

[0079] Specifically, in this embodiment, the first breathable membrane 213 and the second breathable membrane 227 are microporous waterproof and breathable membranes.

[0080] Understandably, the first breathable membrane 213 seals the desiccant in the accommodating cavity 21, which facilitates the desiccant to absorb moisture from the air inside the headlight; the setting of the membrane vents 215 facilitates the entry of internal air into the channel 212 of the central column 211, which improves the efficiency of internal air expulsion from the desiccant device 1 and thus improves the overall gas exchange efficiency.

[0081] Understandably, the second breathable membrane 227 is set up so that airflow can pass through the moisture absorption device 1 for gas exchange, while preventing dust, particles and other debris in the outside air from entering the interior of the moisture absorption device 1 and causing blockage of the gas exchange channel inside the moisture absorption device 1.

[0082] Furthermore, a second protrusion 225 is provided on the bottom wall of the first mounting part 221. The second protrusion 225 supports the second breathable membrane 227, and a second cavity 226 is formed between the second breathable membrane 227, the mounting cavity 22, and the airflow assembly 3.

[0083] Understandably, the second cavity 226 is designed to buffer the air as it is discharged through the first through-hole group 311, preventing the discharged air from directly impacting the second breathable membrane 227 at a high flow rate. This avoids excessive air pressure between the second breathable membrane 227 and the second flexible valve 33, which could cause the second breathable membrane 227 to bulge or even break away from the airflow assembly 3, thus improving the service life of the second breathable membrane 227.

[0084] Please see Figure 9 The second embodiment of this utility model provides a lamp 4, including a moisture absorption device 1 and a lamp body 41. The moisture absorption device 1 is connected to the lamp body 41 and is located at one end away from the light emission direction of the lamp body 41.

[0085] Compared with the prior art, the moisture absorption device and lamp of this utility model have the following advantages: 1. The moisture-absorbing device of this utility model includes a shell and an airflow assembly. The shell includes a receiving cavity with a central column and an installation cavity communicating with the central column. The airflow assembly includes a support member, a first flexible valve, and a second flexible valve. The support member has a concentric first through-hole group and a second through-hole group, with the second through-hole group surrounding the first through-hole group. The first flexible valve blocks the second through-hole group, and the second flexible valve blocks the first through-hole group and has a corresponding vent hole for the second through-hole group. Through the cooperation of the two concentric through-hole groups and the two flexible valves, the air intake and exhaust paths of the moisture-absorbing device are guided. When external air opens the smaller diameter first flexible valve, the required pressure is higher, and when internal air opens the larger diameter second flexible valve, the required pressure is lower. This reduces the amount of humid external air entering, improves the moisture absorption effect of the moisture-absorbing device, extends its service life, and reduces the frequency of user replacement of the moisture-absorbing device.

[0086] 2. The first through-hole group of this utility model includes at least four first through-holes of equal diameter, and the second through-hole group includes at least four second through-holes of equal diameter; the diameter of the first through-hole is larger than the diameter of the second through-hole. By setting the number of through-holes, the uniformity of the airflow pressure distribution on the flexible valve and the pressure at a single point are improved, avoiding the flexible valve from being misaligned or damaged due to excessive pressure on one side, thus improving the performance and service life of the two flexible valves.

[0087] 3. At least one fixing member is provided at each end of the support member of this utility model, and the two flexible valves are respectively provided with fixing holes corresponding to the fixing members; the first flexible valve and the second flexible valve are connected and fixed to the support member through the fixing members and fixing holes. The cooperation between the fixing members and fixing holes improves the connection stability of the two flexible valves fixed to the support member and prevents the flexible valves from falling off during use, which would weaken the moisture absorption effect of the moisture absorption device.

[0088] 4. The first flexible valve of this utility model includes a first silicone sheet and a first clamping plate, and the second flexible valve includes a second silicone sheet and a second clamping plate. By setting two clamping plates, while ensuring the connection stability between the two silicone sheets and the support, the thickness of the silicone sheets can be appropriately reduced to prevent airflow blockage due to pressure being less than the opening pressure of the silicone sheets, thus affecting the gas exchange effect of the moisture absorption device.

[0089] 5. The support member of this utility model has first grooves at both ends, and the first flexible valve is accommodated in the first groove; the bottom wall of the mounting cavity is provided with a first convex ring, which abuts against the bottom wall of the first groove to form a first cavity. The first cavity provides space for internal air to enter the airflow assembly from the central column, avoiding the support member from blocking the path of the exhaust gas and hindering the exhaust of the moisture absorption device.

[0090] 6. The support member of this utility model is further provided with second grooves at both ends, and the second flexible valve is accommodated in the second grooves; the edge of the second silicone sheet is bent away from the support member to form a curved section, and the second groove is provided with an arc-shaped section with an inner wall of arc surface corresponding to the curved section. Through the setting of the curved section and the arc-shaped section, the internal air flows along the curved section after passing through the first through hole group, which is conducive to the internal air pushing open the edge of the second silicone sheet, reducing the resistance of the exhaust of the moisture absorption device and improving the gas exchange efficiency.

[0091] 7. The cavity of this utility model is also provided with at least one reinforcing rib, which is connected to the central column, providing internal support for the cavity, improving the pressure bearing capacity of the cavity, and reducing the deformation of the cavity.

[0092] 8. The accommodating cavity of this utility model is provided with a first breathable membrane at its port, and the first breathable membrane has a membrane vent hole corresponding to the central column; the mounting cavity is provided with a second breathable membrane at its port; the end of the mounting cavity away from the central column extends horizontally and forms a first mounting part and a second mounting part of the mounting support, and the second breathable membrane is disposed in the first mounting part. By providing breathable membranes at both ends of the moisture absorption device, dust and other debris that may enter the moisture absorption device are blocked while ensuring gas flow at both ends, thus avoiding the situation where the moisture absorption device is blocked by debris and cannot achieve the gas exchange function.

[0093] 9. A second protruding ring is provided on the bottom wall of the first mounting part of this utility model. The second protruding ring supports the second breathable membrane, and a second cavity is formed between the mounting cavity of the second breathable membrane and the airflow assembly. Through the provision of the second cavity, the air discharged from the first through-hole group is buffered within the second cavity, preventing excessive air pressure between the second breathable membrane and the second flexible valve, which could cause the second breathable membrane to bulge away from the airflow assembly, thereby damaging and reducing the service life of the second breathable membrane.

[0094] 10. This utility model also provides a lamp, including a moisture-absorbing device and a lamp body. The moisture-absorbing device is connected to the lamp body and is located at the end away from the light-emitting direction of the lamp body. It has the same beneficial effects as the moisture-absorbing device described above, and will not be described in detail here.

[0095] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A moisture-absorbing device, characterized in that, include: The housing has a receiving cavity and a mounting cavity respectively opened on opposite sides; a central column is disposed in the receiving cavity, the central column is hollow and forms a channel, and the channel communicates with the mounting cavity; An airflow assembly includes a support member, a first flexible valve, and a second flexible valve; the support member is disposed within the mounting cavity, and the support member is provided with a first through-hole group and a second through-hole group around the central column, the first through-hole group surrounding the second through-hole group; The first flexible valve is located on the side of the support member closer to the central column, and the second flexible valve is located on the side of the support member away from the central column; the first flexible valve blocks the second through-hole group, the second flexible valve blocks the first through-hole group, and a valve vent is opened corresponding to the second through-hole group.

2. The moisture-absorbing device as described in claim 1, characterized in that: The first through-hole group includes at least four first through-holes of equal diameter, and the second through-hole group includes at least four second through-holes of equal diameter; the diameter of the first through-hole is larger than the diameter of the second through-hole.

3. The moisture-absorbing device as described in claim 1, characterized in that: At least one fixing member is provided at each end of the support member, and at least one fixing hole is provided for the first flexible valve and the second flexible valve respectively corresponding to the fixing member; The first flexible valve and the second flexible valve are fixed to the support member by means of the fastener and the fastening hole.

4. The moisture-absorbing device as described in claim 3, characterized in that: The first flexible valve includes a first silicone sheet and a first clamping sheet, wherein the first silicone sheet is located between the first clamping sheet and the support member; The second flexible valve includes a second silicone sheet and a second clamping sheet, with the second silicone sheet located between the second clamping sheet and the support member.

5. The moisture-absorbing device as described in claim 4, characterized in that: The support member has first grooves at both ends, and the first flexible valve is accommodated in the first grooves; the bottom wall of the mounting cavity is provided with a first convex ring, which abuts against the bottom wall of the first groove to form a first cavity.

6. The moisture-absorbing device as described in claim 4, characterized in that: The support member is further provided with a second groove at both ends, and the second flexible valve is accommodated in the second groove; the edge of the second silicone sheet is bent away from the support member to form a curved section, and the second groove is provided with an arc-shaped section with an inner wall of arc corresponding to the curved section.

7. The moisture-absorbing device as described in claim 1, characterized in that: The cavity is also provided with at least one reinforcing rib, which is connected to the central column.

8. The moisture-absorbing device as described in claim 1, characterized in that: The port of the accommodating cavity is provided with a first breathable membrane, and the first breathable membrane has a membrane breathable hole corresponding to the central column; The port of the mounting cavity is provided with a second breathable membrane; the end of the mounting cavity away from the central column extends horizontally and forms a first mounting part and a second mounting part for mounting the support member, and the second breathable membrane is disposed in the first mounting part.

9. The moisture-absorbing device as described in claim 8, characterized in that: A second protrusion is provided on the bottom wall of the first mounting part. The second protrusion supports the second breathable membrane, and a second cavity is formed between the second breathable membrane, the mounting cavity, and the airflow assembly.

10. A lamp, characterized in that: The lamp includes a moisture-absorbing device and a lamp body as described in any one of claims 1-9, wherein the moisture-absorbing device is connected to the lamp body and is disposed at an end away from the light-emitting direction of the lamp body.

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