Moisture absorbing device and luminaire

Abstract

The utility model relates to a moisture absorption device technical field, especially moisture absorption device, the moisture absorption device includes accommodation cavity and installation cavity, airflow subassembly includes support piece, first flexible valve and second flexible valve, and support piece is opened with first through -hole and second through -hole, and first flexible valve blocks second through -hole, and second flexible valve blocks first through -hole, and the structural rigidity of first flexible valve is greater than the structural rigidity of second flexible valve. Through setting up two flexible valves of different structural rigidity, when the moisture absorption device is in gas exchange, the pressure needed for the first flexible valve to open the air inlet of the external air is greater than the pressure needed for the second flexible valve to open the air outlet of the internal air, thereby realizing the effect that the air outlet is easy and the air inlet is difficult, reducing the amount of external air with moisture, and improving the moisture absorption effect of the moisture absorption device. The utility model further provides a lamp, and the lamp comprises the above moisture absorption device.

Description

Technical Field

[0001] This utility model relates to the field of moisture absorption device 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 that existing moisture-absorbing devices require frequent replacements 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 and a second through hole extending along the axial direction; 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 and the second flexible valve respectively block the second through hole and the first through hole, and the structural stiffness of the first flexible valve is greater than that of the second flexible valve.

[0006] 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.

[0007] Preferably, the first flexible valve includes a first silicone sheet and a first clamping sheet, the first silicone sheet being located between the first clamping sheet and the support member; the second flexible valve includes a second silicone sheet and a second clamping sheet, the second silicone sheet being located between the second clamping sheet and the support member; and the area of ​​the second clamping sheet is smaller than the area of ​​the first clamping sheet.

[0008] Preferably, the support member is further provided with a first groove and a second groove at both ends, the first flexible valve is accommodated in the first groove, and the second flexible valve is accommodated in the second groove; the inner walls of the first groove and the second groove are both inclined surfaces, and the groove opening diameter of the first groove is larger than the groove bottom diameter of the first groove, and the groove opening diameter of the second groove is larger than the groove bottom diameter of the second groove.

[0009] Preferably, the opening of the first groove is partially blocked by the bottom wall of the mounting cavity; the opening area of ​​the second groove is larger than the opening area of ​​the first groove.

[0010] Preferably, a desiccant is provided inside the accommodating cavity.

[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 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 raised ring is provided on the bottom wall of the first mounting part, the raised ring supports the second breathable membrane, and a gap 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 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 first through hole and a second through hole. The first flexible valve blocks the second through hole, and the second flexible valve blocks the first through hole. The structural stiffness of the first flexible valve is greater than that of the second flexible valve. By setting two flexible valves with different structural stiffnesses, when the moisture-absorbing device exchanges gases, the pressure required for external air to open the first flexible valve to enter is greater than the pressure required for internal air to open the second flexible valve to exhaust. This achieves the effect of easy exhaust and difficult air intake, reducing the amount of external air carrying moisture entering, improving the moisture absorption effect of the moisture-absorbing device, and reducing the frequency of user replacement of the moisture-absorbing device.

[0016] 2. 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.

[0017] 3. The first flexible valve of this utility model includes a first silicone sheet and a first pressing plate, and the second flexible valve includes a second silicone sheet and a second pressing plate, wherein the area of ​​the second pressing plate is smaller than the area of ​​the first pressing plate. By designing the two pressing plates with different sizes, the larger first pressing plate leaves a smaller skirt area after pressing the first silicone sheet, thereby increasing the structural rigidity of the first flexible valve and achieving the effect of requiring a greater opening force for the intake airflow.

[0018] 4. The support member of this utility model also has a first groove for accommodating the first flexible valve and a second groove for accommodating the second flexible valve at both ends. The inner walls of the first and second grooves are both inclined surfaces. The opening diameter of the first groove is larger than the bottom diameter of the first groove, and the opening diameter of the second groove is larger than the bottom diameter of the second groove. The design of the inner wall and diameter relationship between the two grooves forms an inverted frustum-shaped groove, which helps to increase the airflow velocity when the airflow passes through the through hole and reduce the airflow resistance after flowing out of the through hole, thus facilitating gas exchange by the moisture absorption device.

[0019] 5. In this invention, the opening of the first groove is partially blocked by the bottom wall of the mounting cavity; the opening area of ​​the second groove is larger than that of the first groove. By partially blocking the opening of the first groove, the bottom wall of the mounting cavity, to a certain extent, hinders the airflow path of the external airflow after it enters the moisture absorption device, thereby achieving the effect of pressure division and reducing the external airflow velocity, further hindering the air intake of the moisture absorption device.

[0020] 6. 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.

[0021] 7. This utility model provides a first breathable membrane at the port of the accommodating cavity, with a vent hole corresponding to the central column; a second breathable membrane is provided at the port of the mounting cavity; the end of the mounting cavity away from the central column extends horizontally, forming a first mounting part and a second mounting part of the mounting support, with the second breathable membrane disposed within 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 airflow at both ends, preventing the moisture absorption device from being clogged by debris and thus failing to achieve its gas exchange function.

[0022] 8. A raised ring is provided on the bottom wall of the first mounting part of this utility model. The raised ring supports the second breathable membrane, and a gap is formed between the second breathable membrane, the mounting cavity, and the airflow assembly. By setting the gap, the air discharged from the first through hole is buffered at the gap to prevent the air pressure between the second breathable membrane and the second flexible valve from being too high, which would cause the second breathable membrane to bulge, thereby damaging and reducing the service life of the second breathable membrane.

[0023] 9. This utility model also provides a lamp, including a moisture absorption device and a lamp body. The moisture absorption device is connected to the lamp body and is located at the end away from the light emission direction of the lamp body. It has the same beneficial effects as the moisture absorption device described above, and will not be described in detail here. Attached Figure Description

[0024] 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.

[0025] Figure 1 This is a three-dimensional structural diagram of the moisture-absorbing device provided in the first embodiment of this utility model.

[0026] Figure 2 This is a cross-sectional schematic diagram of the moisture-absorbing device provided in the first embodiment of this utility model.

[0027] Figure 3 This is an exploded structural diagram of the moisture-absorbing device provided in the first embodiment of this utility model.

[0028] 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.

[0029] 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 .

[0030] 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 .

[0031] 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 .

[0032] Figure 8 This is a block diagram of the lamp provided in the second embodiment of this utility model.

[0033] 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. First breathable membrane; 213. Breathing hole; 214. Reinforcing rib; 215. Channel; 221. Second breathable membrane; 222. First mounting part; 223. Second mounting part; 224. Raised ring; 311. First through hole; 312. Second through hole; 313. First groove; 314. Second groove; 315. Fixing member; 321. First silicone sheet; 322. First clamping plate; 331. Second silicone sheet; 332. Second clamping plate. Detailed Implementation

[0034] 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.

[0035] 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.

[0036] 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.

[0037] 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.

[0038] 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.

[0039] Please see Figures 1-3 The first embodiment of this utility model provides a moisture absorption device 1, including a housing 2, with a receiving cavity 21 and an installation cavity 22 respectively opened on opposite sides of the housing 2; a central column 211 is provided in the receiving cavity 21, the central column 211 is hollow and forms a channel 215, the channel 215 communicates with the installation 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 installation cavity 22, and the support member 31 has a first through hole 311 and a second through hole 312 passing through the support member 31 along the axial direction; the first flexible valve 32 is disposed on the side of the support member 31 close to the central column 211, and the second flexible valve 33 is disposed on the side of the support member 31 away from the central column 211; the first flexible valve 32 and the second flexible valve 33 respectively block the second through hole 312 and the first through hole 311, and the structural stiffness of the first flexible valve 32 is greater than the structural stiffness of the second flexible valve 33.

[0040] 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.

[0041] 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.

[0042] 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.

[0043] Understandably, since the first flexible valve 32 and the second flexible valve 33 respectively block the second through hole 312 and the first through hole 311, when the dehumidification device 1 performs gas exchange, the air inside the headlight passes through the first through hole 311 and opens the second flexible valve 33 before being discharged from the dehumidification device 1; the air outside the headlight passes through the second through hole 312 and opens the first flexible valve 32 before entering the dehumidification device 1.

[0044] 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.

[0045] Understandably, since the structural stiffness of the first flexible valve 32 is greater than that of the second flexible valve 33, 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.

[0046] 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.

[0047] 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.

[0048] 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.

[0049] Understandably, the fastener 315 is disposed between the first through hole 311 and the second through hole 312.

[0050] Specifically, in this embodiment, two fixing members 315 are respectively provided at both ends of the support member 31, and the first flexible valve 32 and the second flexible valve 33 are respectively provided with two fixing holes 34 corresponding to the fixing members 315.

[0051] 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 312 or the first through hole 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.

[0052] 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.

[0053] Please see Figure 2 , Figure 3 , Figure 6 and Figure 7 Furthermore, 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; and the area of ​​the second pressing sheet 332 is smaller than the area of ​​the first pressing sheet 322.

[0054] 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 two fixing holes 34 corresponding to the fixing member 315.

[0055] 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.

[0056] 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.

[0057] 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.

[0058] Understandably, since the area of ​​the first pressing plate 322 is larger than the area of ​​the second pressing plate 332, the exposed skirt area of ​​the first silicone sheet 321 is smaller than the exposed skirt area of ​​the second silicone sheet 331, and the area of ​​external airflow acting on the first silicone sheet 321 is smaller than the area of ​​internal airflow acting on the second silicone sheet 331.

[0059] When the area of ​​airflow action increases, the pressure of airflow on the corresponding silicone sheet is greater, making it easier to open the corresponding silicone sheet. It can be understood that setting the area of ​​the first pressing plate 322 to be larger than the area of ​​the second pressing plate 332 is equivalent to increasing the structural rigidity of the first flexible valve 32, which in turn helps the airflow assembly 3 to achieve the effect of easy exhaust and difficult air intake.

[0060] Furthermore, the support member 31 is provided with a first groove 313 and a second groove 314 at both ends. The first flexible valve 32 is accommodated in the first groove 313 and the second flexible valve 33 is accommodated in the second groove 314. The inner walls of the first groove 313 and the second groove 314 are both inclined surfaces, and the groove opening diameter of the first groove 313 is larger than the groove bottom diameter of the first groove 313, and the groove opening diameter of the second groove 314 is larger than the groove bottom diameter of the second groove 314.

[0061] Understandably, through the design of the relationship between the inner wall shape and diameter, both the first groove 313 and the second groove 314 form an inverted frustum-shaped groove, which is conducive to stabilizing the airflow through the first groove 313 or the second groove 314 and facilitating the diffusion of gas molecules. At the same time, the flow rate of gas increases when it flows into the first through hole 311 or the second through hole 312 and decreases slowly when it flows out, reducing airflow resistance and improving the exchange efficiency of internal and external gases.

[0062] Furthermore, the opening of the first groove 313 is partially blocked by the bottom wall of the mounting cavity 22; the opening area of ​​the second groove 314 is larger than the opening area of ​​the first groove 313.

[0063] Understandably, the bottom wall of the mounting cavity 22 blocks the opening of the first groove 313, which hinders the airflow path after the external airflow enters the moisture absorption device 1, reduces the pressure and speed of the external airflow, and hinders the air intake of the airflow assembly 3. At the same time, it prevents the external airflow from having an excessive speed when it enters the channel 215 of the central column 211.

[0064] Please see Figures 2-7 Furthermore, a desiccant is provided inside the accommodating cavity 21.

[0065] Understandably, a small portion of external 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 air, further improving the desiccant absorption effect of the desiccant device 1.

[0066] 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.

[0067] 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.

[0068] 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.

[0069] Furthermore, the port of the accommodating cavity 21 is provided with a first breathable membrane 212, and the first breathable membrane 212 is provided with a breathable hole 213 corresponding to the central column 211; the port of the mounting cavity 22 is provided with a second breathable membrane 221; the end of the mounting cavity 22 away from the central column 211 extends horizontally and forms a first mounting part 222 and a second mounting part 223 of the mounting support 31, and the second breathable membrane 221 is disposed in the first mounting part 222.

[0070] Specifically, in this embodiment, the first breathable membrane 212 and the second breathable membrane 221 are microporous waterproof and breathable membranes.

[0071] Understandably, the first breathable membrane 212 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 vent 213 facilitates the entry of internal air into the channel 215 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.

[0072] Understandably, the second breathable membrane 221 is set up so that while airflow can pass through the moisture absorption device 1 for gas exchange, it prevents 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.

[0073] Furthermore, a protrusion 224 is provided on the bottom wall of the first mounting part 222, the protrusion 224 supports the second breathable membrane 221, and a gap is formed between the second breathable membrane 221, the mounting cavity 22 and the airflow assembly 3.

[0074] Understandably, the gap setting helps to buffer the internal air when it is discharged through the first through hole 311, preventing the discharged air from directly impacting the second breathable membrane 221 at a high flow rate. Excessive air pressure between the second breathable membrane 221 and the second flexible valve 33 could cause the second breathable membrane 221 to bulge or even break away from the airflow assembly 3, thus improving the service life of the second breathable membrane 221.

[0075] Please see Figure 8 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.

[0076] 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 first through hole and a second through hole. The first flexible valve blocks the second through hole, and the second flexible valve blocks the first through hole. The structural stiffness of the first flexible valve is greater than that of the second flexible valve. By setting two flexible valves with different structural stiffnesses, when the moisture-absorbing device exchanges gases, the pressure required for external air to open the first flexible valve to enter is greater than the pressure required for internal air to open the second flexible valve to exhaust. This achieves the effect of easy exhaust and difficult air intake, reducing the amount of external air carrying moisture entering, improving the moisture absorption effect of the moisture-absorbing device, and reducing the frequency of user replacement of the moisture-absorbing device.

[0077] 2. 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.

[0078] 3. The first flexible valve of this utility model includes a first silicone sheet and a first pressing plate, and the second flexible valve includes a second silicone sheet and a second pressing plate, wherein the area of ​​the second pressing plate is smaller than the area of ​​the first pressing plate. By designing the two pressing plates with different sizes, the larger first pressing plate leaves a smaller skirt area after pressing the first silicone sheet, thereby increasing the structural rigidity of the first flexible valve and achieving the effect of requiring a greater opening force for the intake airflow.

[0079] 4. The support member of this utility model also has a first groove for accommodating the first flexible valve and a second groove for accommodating the second flexible valve at both ends. The inner walls of the first and second grooves are both inclined surfaces. The opening diameter of the first groove is larger than the bottom diameter of the first groove, and the opening diameter of the second groove is larger than the bottom diameter of the second groove. The design of the inner wall and diameter relationship between the two grooves forms an inverted frustum-shaped groove, which helps to increase the airflow velocity when the airflow passes through the through hole and reduce the airflow resistance after flowing out of the through hole, thus facilitating gas exchange by the moisture absorption device.

[0080] 5. In this invention, the opening of the first groove is partially blocked by the bottom wall of the mounting cavity; the opening area of ​​the second groove is larger than that of the first groove. By partially blocking the opening of the first groove, the bottom wall of the mounting cavity, to a certain extent, hinders the airflow path of the external airflow after it enters the moisture absorption device, thereby achieving the effect of pressure division and reducing the external airflow velocity, further hindering the air intake of the moisture absorption device.

[0081] 6. 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.

[0082] 7. This utility model provides a first breathable membrane at the port of the accommodating cavity, with a vent hole corresponding to the central column; a second breathable membrane is provided at the port of the mounting cavity; the end of the mounting cavity away from the central column extends horizontally, forming a first mounting part and a second mounting part of the mounting support, with the second breathable membrane disposed within 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 airflow at both ends, preventing the moisture absorption device from being clogged by debris and thus failing to achieve its gas exchange function.

[0083] 8. A raised ring is provided on the bottom wall of the first mounting part of this utility model. The raised ring supports the second breathable membrane, and a gap is formed between the second breathable membrane, the mounting cavity, and the airflow assembly. By setting the gap, the air discharged from the first through hole is buffered at the gap to prevent the air pressure between the second breathable membrane and the second flexible valve from being too high, which would cause the second breathable membrane to bulge, thereby damaging and reducing the service life of the second breathable membrane.

[0084] 9. This utility model also provides a lamp, including a moisture absorption device and a lamp body. The moisture absorption device is connected to the lamp body and is located at the end away from the light emission direction of the lamp body. It has the same beneficial effects as the moisture absorption device described above, and will not be described in detail here.

[0085] 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 has a first through hole and a second through hole extending through the support member along the axial direction; 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 and the second flexible valve respectively block the second through hole and the first through hole, and the structural stiffness of the first flexible valve is greater than that of the second flexible valve.

2. 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.

3. The moisture-absorbing device as described in claim 2, 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, the second silicone sheet being located between the second clamping sheet and the support member; and the area of ​​the second clamping sheet is smaller than the area of ​​the first clamping sheet.

4. The moisture-absorbing device as described in claim 1, characterized in that: The support member is further provided with a first groove and a second groove at both ends, the first flexible valve is accommodated in the first groove, and the second flexible valve is accommodated in the second groove; The inner walls of both the first groove and the second groove are inclined surfaces, and the opening diameter of the first groove is larger than the bottom diameter of the first groove, and the opening diameter of the second groove is larger than the bottom diameter of the second groove.

5. The moisture-absorbing device as described in claim 4, characterized in that: The opening of the first groove is partially blocked by the bottom wall of the mounting cavity; the opening area of ​​the second groove is larger than that of the first groove.

6. The moisture-absorbing device as described in claim 1, characterized in that: The cavity contains a desiccant.

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 6, characterized in that: The port of the accommodating cavity is provided with a first breathable membrane, and the first breathable membrane has a 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 raised ring is provided on the bottom wall of the first mounting part, the raised ring supports the second breathable membrane, and a gap 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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