Waterproof structure of outdoor lamp

Abstract

The waterproof structure of the outdoor lamp comprises a lamp body, a lampshade and a first waterproof part arranged between the lamp body and the lampshade in a sealed mode, and the first waterproof part comprises a first contact face connected with the lamp body in an abutting mode; the second contact surface abuts against the lampshade and is located on the surface of the first waterproof part, and the second contact surface is located on the side, away from the lamp body, of the first contact surface; the first contact face and the second contact face are provided with a plurality of protruding parts and concave parts, and the protruding parts expand when making contact with water or moisture to fill the gap between the lamp body and the lampshade. According to the technical scheme, the first waterproof part is adopted between the lamp body and the lampshade, the contact surface structure of the expandable protruding part is arranged on the contact surface of the waterproof part and the lamp body and the lampshade, the water vapor permeation path is reduced, and the waterproof performance is improved. The protruding parts expand to fill the gaps when encountering water or moisture, so that the sealing effect is further enhanced, the expanded protruding parts can provide the long-term sealing effect, and performance reduction caused by aging or abrasion is reduced.

Description

Technical Field

[0001] This application relates to the field of waterproof sealing, and more particularly to a waterproof structure for outdoor lighting fixtures. Background Technology

[0002] Outdoor lighting fixtures are widely used in streets, parks, courtyards, and building facades to provide illumination. However, due to the complex and variable outdoor environment, lighting fixtures are constantly exposed to rain, moisture, dust, and other external factors, making them prone to water ingress and dampness. This can affect the normal operation of the fixtures and even shorten their lifespan. Therefore, improving the waterproof performance of outdoor lighting fixtures has become an important technological focus in the industry.

[0003] Currently, common waterproof structures for outdoor lighting fixtures typically employ sealing rings, adhesive bonding, or potting compounds for sealing. However, these methods still have certain limitations. For example, while sealing rings can provide a seal between the lamp body and the lampshade, they may age and deform during long-term use due to thermal expansion and contraction, leading to seal failure and allowing moisture to penetrate the lamp's interior. Adhesive bonding can provide a good initial seal, but the lack of elasticity after curing makes it prone to cracking under impact or vibration. Potting compounds, while improving overall waterproofing, are more expensive, and disassembly is difficult when internal components need replacement or repair, hindering maintenance. Furthermore, different lamp designs and installation methods may result in incomplete sealing, leading to localized poor sealing and affecting overall waterproofing performance. Moreover, existing sealing structures are usually fixed and cannot adapt to changes in environmental humidity or temperature, failing to effectively address waterproofing needs under extreme weather conditions. Some seals also use purely flexible materials, making them susceptible to deformation under external forces, affecting long-term stability. Utility Model Content

[0004] The purpose of this application is to overcome the shortcomings of the prior art and propose a waterproof structure for an outdoor lighting fixture, including a lamp body, a lamp cover, and a first waterproof part sealed between the lamp body and the lamp cover, the first waterproof part comprising:

[0005] The first contact surface abuts against the lamp body;

[0006] The second contact surface abuts against the lampshade and is located on the surface of the first waterproof part, and the second contact surface is located on the side of the first contact surface away from the lamp body;

[0007] The first contact surface and the second contact surface are provided with a plurality of protrusions and recesses. When the protrusions come into contact with water or moisture, they expand and fill the gap between the lamp body and the lamp cover.

[0008] Preferably, the protrusions and recesses are in the shape of one or more of the following: rectangular, arc-shaped, or wavy.

[0009] Preferably, the plurality of recesses and the plurality of protrusions are arranged alternately at intervals along the first contact surface and the second contact surface, and a predetermined distance is maintained between adjacent recesses and protrusions.

[0010] Preferably, the first waterproof part includes: a flexible seal and a rigid support that is fully embedded in the flexible seal.

[0011] Preferably, the rigid support is made of stainless steel, plastic, or a composite material.

[0012] Preferably, the flexible seal is one of silicone rubber, EPDM rubber, or fluororubber.

[0013] Preferably, the lamp body includes a lamp tube, a lamp holder, and a second waterproof part sealed between the lamp tube and the lamp holder. The second waterproof part includes a sealing ring with a cavity inside. The sealing ring forms an inner ring and an outer ring along the cavity. The inner ring is fitted to the lamp tube, and the outer ring is fitted to the lamp holder.

[0014] Preferably, the connection between the lamp tube and the lamp holder is a threaded connection or a snap-fit ​​connection.

[0015] Preferably, the lampshade includes a side wall, a bottom cover, and a third sealing portion sealingly disposed between the side wall and the bottom cover, the third sealing portion comprising:

[0016] The third contact surface abuts against the bottom cover;

[0017] The fourth contact surface abuts against the side wall and is located on the surface of the third waterproof part. The fourth contact surface is located on the side of the third contact surface away from the bottom cover. The third contact surface and the fourth contact surface are provided with a plurality of the protrusions and the recesses.

[0018] Preferably, the third contact surface is provided with a groove, and the part where the sidewall abuts against the third contact surface is accommodated in the groove.

[0019] This application offers the following advantages: A first waterproof section is incorporated between the lamp body and the lampshade. This waterproof section features an expandable protrusion at its contact points with the lamp body and lampshade, reducing moisture penetration paths and improving waterproof performance. It also increases friction, enhancing the stability of the seal and preventing the lamp body and lampshade from loosening due to vibration or wind. The protrusion expands and fills gaps when exposed to water or moisture, further strengthening the seal. The expandable protrusion provides a long-term seal, reducing performance degradation due to aging or wear, thereby improving the overall durability and lifespan of the luminaire. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the appearance of the outdoor lighting fixture described in one embodiment of this application;

[0022] Figure 2 This is an exploded view of an outdoor lighting fixture according to one embodiment of this application;

[0023] Figure 3 This is a schematic diagram of the appearance of the first waterproof part according to an embodiment of this application;

[0024] Figure 4 This is a schematic diagram of the appearance of the first waterproof part according to an embodiment of this application;

[0025] Figure 5 This is a cross-sectional view of the first waterproof part BB as described in one embodiment of this application;

[0026] Figure 6 This is a schematic diagram of the appearance of the lamp body according to one embodiment of this application;

[0027] Figure 7 This is a schematic diagram of the appearance of the second waterproof part according to one embodiment of this application;

[0028] Figure 8 This is a cross-sectional view of the second waterproof part AA as described in one embodiment of this application;

[0029] Figure 9 This is a schematic diagram of the appearance of the third waterproof part according to one embodiment of this application;

[0030] Figure 10This is a cross-sectional view of the third waterproof part CC as described in one embodiment of this application.

[0031] Explanation of reference numerals: 100, Outdoor lighting fixture; 10, Lamp body; 11, Lamp tube; 12, Lamp holder; 20, Lampshade; 21, Side wall; 22, Bottom cover; 30, First waterproof part; 31, First contact surface; 32, Second contact surface; 33, Protrusion; 34, Recess; 35, Rigid support; 36, Flexible sealing element; 40, Second waterproof part; 41, Cavity; 50, Third waterproof part; 51, Groove; 52, Third contact surface; 53, Fourth contact surface. Detailed Implementation

[0032] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings. Preferred embodiments of this application are shown in the drawings. However, this application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this application.

[0033] 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.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the specification of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0035] Please refer to Figures 1-5 One embodiment of this application provides a waterproof structure for an outdoor lighting fixture 100, including a lamp body 10, a lamp cover 20, and a first waterproof part 30 sealed between the lamp body 10 and the lamp cover 20. The first waterproof part 30 includes: a first contact surface 31 that abuts against the lamp body 10; and a second contact surface 32 that abuts against the lamp cover 20 and is located on the surface of the first waterproof part 30, and is located on the side of the first contact surface 31 away from the lamp body 10. The first contact surface 31 and the second contact surface 32 are provided with a plurality of protrusions 33 and a plurality of recesses 34. When the protrusions 33 come into contact with water or moisture, they expand and fill the gap between the lamp body 10 and the lamp cover 20.

[0036] In this embodiment, it should be noted that the first contact surface 31 abuts against the lamp body 10, ensuring a tight fit between the waterproof part and the lamp body 10, forming the first waterproof barrier. The second contact surface 32 abuts against the lamp cover 20, allowing the waterproof part to fit tightly against the lamp cover 20, forming a closed structure together with the lamp body 10. The plurality of protrusions 33 and recesses 34 provided on the first contact surface 31 and the second contact surface 32 can form a larger contact area, reducing the water vapor penetration path, while increasing friction and improving the stability of the waterproof part. Increasing the contact area and reducing the water vapor penetration path improves the waterproof performance. It can also increase friction, enhance the stability of the sealing part, prevent the lamp body 10 and the lamp cover 20 from loosening due to vibration or wind, and also form an adaptive seal. The protrusions 33 are made of moisture-absorbing and expanding material, which can expand when in contact with water or moisture, thereby automatically filling tiny gaps and further enhancing the sealing effect. In addition, the protrusions 33 and recesses 34 can also optimize the contact interface through specific geometric structures to improve the sealing effect. For example, the protrusions 33 and recesses 34 may be rectangular, arc-shaped, or wavy, or a combination of one or more of these shapes. Different sealing contact methods can adapt to different lamp structure requirements and installation methods, improving the fit with the lamp body 10 and lampshade 20, and further enhancing waterproof performance. Multiple recesses 34 and multiple protrusions 33 are arranged alternately along the first contact surface 31 and the second contact surface 32 at intervals, maintaining a predetermined distance between adjacent recesses and protrusions, ensuring a uniform distribution of the waterproof surface structure and improving sealing stability. This avoids uneven local sealing effects and improves overall sealing performance.

[0037] In one optional embodiment, the first waterproof portion 30 includes a flexible seal 36 and a rigid support 35 fully embedded in the flexible seal 36. The flexible seal 36 provides an elastic seal, and the rigid support 35 provides structural support to prevent deformation of the seal from affecting the sealing effect. This improves the stability of the sealing portion, enabling it to withstand long-term external pressure or temperature changes and preventing seal failure due to aging or deformation.

[0038] In this embodiment, the rigid support 35 can be made of at least one of metal, plastic, or composite material. The rigid material improves the overall strength and stability of the waterproof section. Metal enhances durability, plastic reduces costs, and composite materials combine the advantages of both, improving both durability and flexibility.

[0039] Correspondingly, the flexible seal 36 is made of highly elastic, waterproof, and weather-resistant materials such as silicone rubber, EPDM rubber, or fluororubber to ensure long-term protective effects. Silicone rubber is resistant to high and low temperatures (-60℃ to 200℃), suitable for extreme weather conditions, and resistant to UV and ozone aging, ensuring it will not fail with long-term outdoor use. EPDM rubber has excellent weather resistance and water resistance, making it suitable for humid or rainy environments and for sealing structures subjected to long-term compression, maintaining stable resilience. Fluororubber is oil-resistant and chemically resistant, suitable for waterproof sealing in industrial or special environments.

[0040] Metallic materials include: aluminum alloys, which are lightweight and corrosion-resistant, making them suitable for humid environments; and stainless steel, which is high-strength and corrosion-resistant, making it suitable for extreme environments (such as coastal or high-humidity areas).

[0041] Plastic materials include: PA66 (Nylon), with high heat resistance and mechanical strength, suitable for high-temperature environments; POM (Polyoxymethylene), with a low coefficient of friction and wear resistance, suitable for long-term compression environments; and PC (Polycarbonate), with impact resistance and good transparency, suitable for lighting components requiring light transmission.

[0042] Composite materials include: glass fiber reinforced plastic (FRP), which is high-strength and corrosion-resistant, suitable for high-humidity and high-temperature environments; and carbon fiber composite materials, which are lightweight and high-strength, suitable for the waterproof structures of high-end lighting fixtures.

[0043] The technical solution of this embodiment employs a first waterproof part 30 between the lamp body 10 and the lamp cover 20. This waterproof part has a contact surface structure with an expandable protrusion 33 at the contact position with the lamp body 10 and the lamp cover 20, reducing the path of water vapor penetration and improving waterproof performance. It can also increase friction, enhance the stability of the sealing part, and prevent the lamp body 10 and the lamp cover 20 from loosening due to vibration or wind. The protrusion 33 expands and fills the gap when it encounters water or moisture, thereby further enhancing the sealing effect. The expandable protrusion 33 can provide a long-term sealing effect, reducing performance degradation caused by aging or wear, thereby improving the durability and service life of the entire lamp.

[0044] In one alternative embodiment, the protrusion 33 may be made of materials including: water-swellable rubber, which expands upon contact with water, filling tiny gaps and improving sealing performance, suitable for high-humidity or underwater environments; expanded silicone rubber, combining the high-temperature resistance and weather resistance of silicone rubber with the addition of a water-absorbing and swelling agent, suitable for waterproof structural hydrogels exposed to outdoor environments for extended periods, possessing good biocompatibility and resilience, and suitable for high-weather-resistant sealing; and composite water-absorbing and swelling materials, such as: water-absorbing and swelling rubber + SAP composite material, combining the high water absorption capacity of SAP with the elastic sealing properties of rubber, suitable for outdoor lighting fixtures 100 seals, enhancing sealing durability; or, bentonite + polymer composite material, by modifying bentonite and combining it with an elastomer, improving the stability and durability after expansion, suitable for sealing structures exposed to humid environments for extended periods.

[0045] According to the diagram Figures 6-7 As shown, in another embodiment of the present invention, the lamp body 10 includes a lamp tube 11, a lamp holder 12, and a second waterproof part 40 sealed between the lamp tube 11 and the lamp holder 12. The second waterproof part 40 includes a sealing ring, a cavity 41 is provided inside the sealing ring, and an inner ring and an outer ring are formed along the cavity 41. The inner ring is fitted with the lamp tube 11, and the outer ring is fitted with the lamp holder 12.

[0046] In this embodiment, it should be noted that the sealing ring, as the main structure of the second waterproof part 40, can be made of a material with good elasticity, such as silicone, rubber, or polyurethane. These materials have good sealing performance, aging resistance, and temperature resistance. At the same time, the sealing ring has an internal cavity 41, which allows it to have good deformation capacity under pressure, improving sealing tightness and adapting to different installation environments.

[0047] Meanwhile, the cavity 41 of the sealing ring can be filled with a low-density elastic material (such as foam rubber) to allow it to deform appropriately under compression, thereby enhancing the sealing effect. For example, when the lamp tube 11 is inserted into the lamp holder 12, the inner and outer rings of the sealing ring deform synchronously, ensuring tight contact with the lamp tube 11 and the lamp holder 12, thus improving the overall waterproof capability and reducing the impact of material shrinkage caused by temperature changes. In addition, in extremely cold regions (such as below -40°C), the sealing ring can be made of a low-temperature flexible material (such as fluorosilicone rubber) to ensure good resilience and sealing performance under extreme low-temperature conditions, avoiding seal failure due to rubber hardening.

[0048] In another alternative embodiment, the inner and outer rings of the sealing ring have different thicknesses. For example, the inner ring is thinner, allowing it to deform more easily when the lamp tube 11 is inserted, forming a tighter fit with the lamp tube 11 and improving the seal. The outer ring is thicker, providing stronger support when fixed to the lamp holder 12, preventing the sealing ring from loosening due to external forces (such as wind pressure or vibration).

[0049] The technical solution of this embodiment can ensure the long-term stability of the lamp, reduce the vibration and impact between the lamp tube 11 and the lamp holder 12, avoid sealing failure due to vibration or impact, and extend the service life of the lamp body 10.

[0050] In one optional embodiment, the lamp tube 11 and the lamp holder 12 are connected by a threaded connection or a snap-fit ​​connection.

[0051] In this embodiment, the lamp tube 11 and lamp holder 12 are connected by a threaded connection, utilizing the fastening characteristics of the thread structure to achieve a quick and stable connection. The rotational engagement of the threads ensures the sealing and stability of the lamp. Alternatively, the lamp tube 11 and lamp holder 12 can be connected by a snap-fit ​​connection, using an inner and outer snap-fit ​​structure to achieve quick installation and disassembly of the lamp tube 11 and lamp holder 12, while ensuring the stability and sealing of the connection. Alternatively, to prevent loosening due to vibration or impact from the external environment, a double locking mechanism can be designed, using a snap-fit ​​combined with a spiral inner snap-fit ​​design to further enhance the stability of the connection. Furthermore, a second waterproof part 40 is provided at the connection point. Tightening the threads or snapping the snap-fit ​​compresses the second waterproof part 40, forming a sealed waterproof barrier that effectively prevents moisture penetration. The connection method of the lamp tube 11 and lamp holder 12 can provide greater flexibility, sealing, and durability according to actual application needs, meeting the requirements of different installation, use, and maintenance scenarios.

[0052] according to Figures 8-10 As shown, in another embodiment of the present invention, the lampshade 20 includes a side wall 21, a bottom cover 22, and a third sealing part sealed between the side wall 21 and the bottom cover 22. The third sealing part includes: a third contact surface 52 that abuts against the bottom cover 22; and a fourth contact surface 53 that abuts against the side wall 21 and is located on the surface of the third waterproof part 50. The fourth contact surface is located on the side of the third contact surface 52 away from the bottom cover 22. The third contact surface 52 and the fourth contact surface 53 are provided with a plurality of protrusions 33 and recesses 34.

[0053] In this embodiment, it should be noted that the bottom cover 22 of the lampshade 20 is removable, which facilitates cleaning, maintenance, or replacement of parts inside the lampshade 20. A third sealing part is provided at the connection between the bottom cover 22 and the side wall 21 to ensure the sealing performance of the lampshade 20, prevent dust, moisture, or other impurities from entering the interior of the lampshade 20, thereby extending the service life of the lamp and maintaining its performance.

[0054] The third sealing part includes a third contact surface 52 that abuts against the bottom cover 22 and a fourth contact surface 53 that abuts against the side wall 21. The third contact surface 52 and the fourth contact surface 53 are provided with a plurality of protrusions 33 and recesses 34. These protrusions 33 and recesses 34 can form a larger contact area, reducing the path for water vapor penetration, while also increasing friction and improving the stability of the waterproof part. Increasing the contact area and reducing the path for water vapor penetration also improves waterproof performance. It can also increase friction, enhance the stability of the sealing part, and prevent the lamp body 10 and lamp cover 20 from loosening due to vibration or wind. It can also form an adaptive seal. The protrusions 33 are made of a moisture-absorbing and expanding material, which can expand upon contact with water or moisture, thereby automatically filling tiny gaps and further enhancing the sealing effect. Furthermore, the protrusions 33 and recesses 34 can also optimize the contact interface through specific geometric structures to improve the sealing effect. For example, the protrusions 33 and recesses 34 can be rectangular, arc-shaped, or wavy. Different sealing contact methods can adapt to different lamp structure requirements and installation methods, improving the fit with the lamp body 10 and lampshade 20, and further enhancing waterproof performance. The spaced intervals between each recess 34 and each protrusion 33 ensure a uniform distribution of the waterproof surface structure, improving sealing stability. This avoids uneven local sealing effects and improves overall sealing performance.

[0055] In an optional embodiment, the third contact surface 52 is provided with a groove 51, and the abutment between the side wall 21 and the third contact surface 52 is accommodated within the groove 51. This design further optimizes the sealing performance and assembly stability of the lampshade 20. The shape of the groove 51 can be designed according to the shape of the side wall 21 to ensure a tight fit between the side wall 21 and the groove 51. For example, if the side wall 21 is circular, the groove 51 can be designed as circular; if the side wall 21 is rectangular, the groove 51 can be designed as rectangular. By accommodating the side wall 21 within the groove 51, the contact area between the side wall 21 and the third contact surface 52 can be significantly increased, thereby improving the sealing effect. This design can effectively prevent dust, moisture, and other impurities from entering the interior of the lampshade 20 from the connection between the side wall 21 and the bottom cover 22. The design of the groove 51 can guide the correct alignment of the side wall 21 and the third contact surface 52, ensuring that the two can fit tightly together. This structural design not only simplifies the assembly process but also improves the accuracy and stability of the assembly, reducing sealing problems caused by improper assembly. The groove 51 also provides additional support for the side wall 21, enhancing the overall structural strength of the lampshade 20. During use, even under certain external forces or vibrations, the side wall 21 is not easily deformed or loosened, thus ensuring the long-term stable use of the lampshade 20.

[0056] The embodiments described above are merely examples of several implementations of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these modifications and improvements all fall within the scope of protection of this application.

Claims

1. A waterproof structure for an outdoor lighting fixture, characterized in that, The lamp includes a lamp body, a lamp cover, and a first waterproof portion sealed between the lamp body and the lamp cover, the first waterproof portion comprising: The first contact surface abuts against the lamp body; The second contact surface abuts against the lampshade and is located on the surface of the first waterproof part, and the second contact surface is located on the side of the first contact surface away from the lamp body; The first contact surface and the second contact surface are provided with a plurality of protrusions and recesses. When the protrusions come into contact with water or moisture, they expand and fill the gap between the lamp body and the lamp cover.

2. The waterproof structure of the outdoor lighting fixture according to claim 1, characterized in that, The protrusions and recesses are in the shape of one or more of the following: rectangular, arc-shaped, or wavy.

3. The waterproof structure of the outdoor lighting fixture according to claim 1, characterized in that, The plurality of recesses and the plurality of protrusions are arranged alternately at intervals along the first contact surface and the second contact surface, and a predetermined distance is maintained between adjacent recesses and protrusions.

4. The waterproof structure of the outdoor lighting fixture according to claim 1, characterized in that, The first waterproof part includes: a flexible seal and a rigid support that is fully embedded in the flexible seal.

5. The waterproof structure of the outdoor lighting fixture according to claim 4, characterized in that, The rigid support is made of stainless steel, plastic, or composite material.

6. The waterproof structure of the outdoor lighting fixture according to claim 4, characterized in that, The flexible seal is one of silicone rubber, EPDM rubber, or fluororubber.

7. The waterproof structure of the outdoor lighting fixture according to claim 1, characterized in that, The lamp body includes a lamp tube, a lamp holder, and a second waterproof part sealed between the lamp tube and the lamp holder. The second waterproof part includes a sealing ring with a cavity inside. The sealing ring forms an inner ring and an outer ring along the cavity. The inner ring is fitted to the lamp tube, and the outer ring is fitted to the lamp holder.

8. The waterproof structure of the outdoor lighting fixture according to claim 7, characterized in that, The lamp tube and lamp holder are connected by either a threaded connection or a snap-fit ​​connection.

9. The waterproof structure of the outdoor lighting fixture according to claim 1, characterized in that, The lampshade includes a side wall, a bottom cover, and a third waterproof portion sealed between the side wall and the bottom cover, the third waterproof portion comprising: The third contact surface abuts against the bottom cover; The fourth contact surface abuts against the side wall and is located on the surface of the third waterproof part. The fourth contact surface is located on the side of the third contact surface away from the bottom cover. The third contact surface and the fourth contact surface are provided with a plurality of the protrusions and the recesses.

10. The waterproof structure of the outdoor lighting fixture according to claim 9, characterized in that, The third contact surface is provided with a groove, and the part where the side wall abuts against the third contact surface is accommodated in the groove.

Images