Direct type energy-saving waterproof down lamp
By using a sealing ring and an inflatable sealing mechanism in the direct-downlight, the problem of insufficient sealing at the threaded connection is solved, achieving better waterproofing and ensuring that the inside of the lamp body remains dry.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- YUESEN LIGHTING TECH (SHANGHAI) CO LTD
- Filing Date
- 2025-06-19
- Publication Date
- 2026-05-12
AI Technical Summary
The existing direct-downlights have insufficient sealing at the threaded connection between the top cover and the heat sink, leading to liquid leakage and poor waterproofing.
A sealing ring and an inflatable sealing mechanism are used to seal the threaded connection between the lamp body and the lamp cover. An inflatable airbag tightly wraps the sealing ring and the outer wall of the lamp cover to enhance the sealing effect.
It effectively blocks liquid flow and penetration, enhances the waterproof performance of the downlight, and ensures that the inside remains dry.
Smart Images

Figure CN224229951U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of direct-downlight downlights, and in particular relates to a direct-downlight energy-saving and waterproof downlight. Background Technology
[0002] A direct-light downlight is a type of lamp that emits light directly downwards. The light source is located at the back of the lamp and shines directly downwards through a light diffuser. It has a relatively large beam angle, typically between 50 and 120 degrees, providing uniform and soft light, making it suitable for use as basic or auxiliary lighting.
[0003] For example, a waterproof and energy-saving downlight proposed in announcement number CN213712835U relates to the field of lighting fixtures, achieving uniform illumination, simple structure, and certain waterproof and moisture-proof effects. The main technical solution adopted includes: a heat sink: a cylindrical hollow structure with several heat dissipation strips on the outer wall extending to the bottom of the heat sink; a light-emitting part: located inside the heat sink, including a circuit board and a first reflector bowl, the circuit board being located at the bottom of the light-emitting part and attached to the heat sink, with light-emitting LEDs mounted on it; a diffuser plate: placed on the heat sink, surrounded by gaskets; and a top cover: cylindrical, matching the internal thread of the top of the heat sink, with a bent extension above the internal thread. As the thread tightens, the space between the extension and the top of the heat sink narrows, compressing the gaskets and sealing the light-emitting part inside the heat sink, achieving a seal.
[0004] The above-mentioned patent has the following defects in use:
[0005] The top cover and the radiator are connected and sealed by a threaded connection, leaving the joint exposed. In actual use, although the threaded connection can provide a certain degree of sealing, the tiny gaps between the threads are not enough to completely block the flow of liquid, allowing liquid to seep into the downlight and resulting in poor waterproofing. Therefore, this utility model proposes a direct-down energy-saving waterproof downlight. Utility Model Content
[0006] This utility model provides a direct-down energy-saving waterproof downlight. A sealing ring seals the threaded connection between the lamp body and the lamp cover, sealing the gap between the external and internal threads and preventing liquid flow and penetration. An inflatable sealing mechanism tightly wraps an inflatable bladder around the sealing ring and the outer wall of the lamp cover, further sealing the connection and preventing liquid from penetrating the downlight, thus enhancing its waterproof effect. In summary, this invention solves the problems in the prior art.
[0007] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:
[0008] This utility model discloses a direct-down energy-saving and waterproof downlight, comprising:
[0009] The lamp body and the light source are provided. The light source is fixedly connected to the inside of the lamp body. A sealing frame is fixedly connected to the outer wall of the lamp body. A lamp cover is threadedly connected to the outer wall of the lamp body. The inner wall of the sealing frame is in close contact with the outer wall of the lamp cover. A sealing ring is fixedly connected to the inner bottom end of the sealing frame. The top end of the sealing ring is in close contact with the bottom end of the lamp cover. A prism diffuser plate is fixedly connected to the top end of the lamp body. The top end of the prism diffuser plate is in close contact with the inner wall of the lamp cover.
[0010] An inflatable sealing mechanism is provided on the sealing sleeve frame and is used for the connection and sealing of the lamp cover and the lamp body.
[0011] The inflatable sealing mechanism includes an inflatable airbag fixedly connected inside the sealing frame. The outer wall of the inflatable airbag contacts the outer wall of the sealing ring and the lampshade, respectively. A pair of connecting cylinders are fixedly connected to the bottom end of the sealing frame, and a piston plate is slidably connected inside the connecting cylinders. A compression screw is threadedly connected to the bottom end of the connecting cylinder, and the top end of the compression screw is rotatably connected to the bottom end of the piston plate. An air guide tube is fixedly connected to the top end of the connecting cylinder, and the top end of the air guide tube passes through the bottom end of the sealing frame and is fixedly connected to the bottom end of the inflatable airbag.
[0012] Furthermore, a first reflector is fixedly connected to the inner wall of the lamp body, and the first reflector is located outside the light source. A second reflector is fixedly connected to the inner wall of the lamp shade, and both the inner walls of the first and second reflectors are provided with a vacuum silver plating layer.
[0013] Furthermore, a light-transmitting plate is fixedly connected to the inner wall of the lampshade, and the surface of the light-transmitting plate is provided with a hydrophobic, oleophobic, and anti-fouling film. The bottom end of the light-transmitting plate is in contact with the top end of the second reflector.
[0014] Furthermore, the outer wall of the lamp body is provided with external threads, and the inner wall of the lamp shade is provided with internal threads near the bottom, and the external threads and internal threads are threadedly connected.
[0015] Furthermore, a pair of rubber seals are rotatably connected to the inner wall of the air duct, and the pair of rubber seals are in contact with each other.
[0016] Furthermore, the outer wall of the lamp body is fixedly connected with multiple evenly distributed heat dissipation strips, and the outer wall of the lamp body is fixedly connected with a pair of elastic buckles.
[0017] The present invention has the following advantages over the prior art:
[0018] 1. This technical solution uses a sealing ring to seal the threaded connection between the lamp body and the lamp cover after they are connected and fitted by the external and internal threads, thereby sealing the gap between the external and internal threads and preventing the flow and penetration of liquid.
[0019] 2. This technical solution uses an inflatable sealing mechanism to squeeze the gas inside the connecting cylinder into the inflatable airbag, causing it to expand and tightly wrap around the sealing ring and the outer wall of the lamp cover, thus sealing the connection between the lamp body and the lamp cover. This makes it difficult for liquid to penetrate into the downlight and enhances its waterproof effect.
[0020] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description
[0021] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments 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.
[0022] Figure 1 This is a three-dimensional structural diagram of a direct-down energy-saving waterproof downlight according to the present invention;
[0023] Figure 2 This is a partially disassembled structural diagram of a direct-down energy-saving waterproof downlight according to the present invention;
[0024] Figure 3 This is a partial cross-sectional structural diagram of a direct-down energy-saving waterproof downlight according to the present invention;
[0025] Figure 4 This utility model Figure 3 Enlarged structural diagram at point A;
[0026] Figure 5 This is a three-dimensional structural diagram of the sealing frame, sealing ring, and inflatable airbag in this utility model.
[0027] The attached diagram lists the components represented by each number as follows:
[0028] 1. Lamp body; 2. Light source; 3. First reflector bowl; 4. Lampshade; 5. Prism diffuser plate; 6. Second reflector bowl; 7. Light-transmitting plate; 8. External thread; 9. Internal thread; 10. Sealing sleeve frame; 11. Sealing ring; 12. Inflatable sealing mechanism; 1201. Inflatable airbag; 1202. Connecting cylinder; 1203. Piston plate; 1204. Extrusion screw; 1205. Air guide pipe; 1206. Rubber sealing plate; 13. Heat dissipation strip; 14. Elastic buckle. Detailed Implementation
[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.
[0030] In the description of this utility model, it should be understood that the terms "relative", "one end", "inner", "lateral", "end", "both ends", "both sides", "front", "one end face", "the other end face", etc., which indicate orientation or positional relationship, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Specific implementation examples:
[0032] Please see Figures 1-5 As shown, this utility model discloses a direct-down energy-saving waterproof downlight, comprising:
[0033] The lamp body 1 and the light source 2 are fixedly connected inside the lamp body 1. A sealing frame 10 is fixedly connected to the outer wall of the lamp body 1. A lamp cover 4 is threadedly connected to the outer wall of the lamp body 1. The inner wall of the sealing frame 10 is in close contact with the outer wall of the lamp cover 4. A sealing ring 11 is fixedly connected to the inner bottom end of the sealing frame 10. The top end of the sealing ring 11 is in close contact with the bottom end of the lamp cover 4. A prism diffuser plate 5 is fixedly connected to the top end of the lamp body 1. The top end of the prism diffuser plate 5 is in close contact with the inner wall of the lamp cover 4.
[0034] An inflation sealing mechanism 12 is provided on the sealing sleeve frame 10 and is used for the connection and sealing of the lamp cover 4 and the lamp body 1.
[0035] The inflatable sealing mechanism 12 includes an inflatable airbag 1201 fixedly connected inside the sealing frame 10. The outer wall of the inflatable airbag 1201 contacts the outer wall of the sealing ring 11 and the lampshade 4 respectively. A pair of connecting cylinders 1202 are fixedly connected to the bottom end of the sealing frame 10. A piston plate 1203 is slidably connected inside the connecting cylinder 1202. A compression screw 1204 is threadedly connected to the bottom end of the connecting cylinder 1202. The top end of the compression screw 1204 is rotatably connected to the bottom end of the piston plate 1203. An air guide pipe 1205 is fixedly connected to the top end of the connecting cylinder 1202. The top end of the air guide pipe 1205 passes through the bottom end of the sealing frame 10 and is fixedly connected to the bottom end of the inflatable airbag 1201.
[0036] In the specific implementation process, the lampshade 4 is threadedly connected to the lamp body 1 and is fitted onto the outer wall of the lamp body 1 near the top, while the prism diffuser plate 5 is pressed down. At the same time, the bottom end of the lampshade 4 contacts the sealing ring 11, so that the sealing ring 11 seals the threaded connection between the lamp body 1 and the lampshade 4, thereby sealing the gap between the external thread 8 and the internal thread 9 and preventing the flow and penetration of liquid. Then, a pair of extrusion screws 1204 are rotated in sequence to move upward, driving the piston plate 1203 to move upward and extruding the air inside the connecting cylinder 1202 into the inflation bladder 1201, so that it expands and tightly wraps around the sealing ring 11 and the outer wall of the lampshade 4, thereby sealing the connection between the lamp body 1 and the lampshade 4, making it difficult for liquid to penetrate into the downlight and enhancing its waterproof effect. Next, the light source 2 emits light, which is directly irradiated outward through the prism diffuser plate 5.
[0037] The lamp body 1 has a first reflector bowl 3 fixedly connected to its inner wall, and the first reflector bowl 3 is located outside the light source 2. The lamp cover 4 has a second reflector bowl 6 fixedly connected to its inner wall, and the inner walls of the first reflector bowl 3 and the second reflector bowl 6 are both provided with a vacuum silver plating layer.
[0038] By setting up the first reflector bowl 3 and the second reflector bowl 6, and providing a vacuum silver plating layer, the first reflector bowl 3 can reflect the emitted divergent light into a narrow-angle beam, reducing light diffusion loss. Then, the second reflector bowl 6 reflects the edge scattered light to the blind area of the first reflector bowl 3, improving the uniformity of illumination. Thus, the synergistic effect of the first reflector bowl 3 and the second reflector bowl 6 optimizes the light path, improves light efficiency, and achieves energy saving.
[0039] The inner wall of the lampshade 4 is fixedly connected to a light-transmitting plate 7, and the surface of the light-transmitting plate 7 is provided with a hydrophobic, oleophobic and anti-fouling film. The bottom end of the light-transmitting plate 7 is in contact with the top end of the second reflector bowl 6.
[0040] The light-transmitting plate 7 allows light to pass through and shine outwards, while the hydrophobic, oleophobic, and anti-fouling film keeps the surface of the light-transmitting plate 7 clean, reduces dirt, and ensures clear light transmission.
[0041] The lamp body 1 has an external thread 8 on its outer wall and an internal thread 9 on the inner wall of the lamp cover 4 near the bottom. The external thread 8 and the internal thread 9 are threadedly connected.
[0042] The threaded connection between the external thread 8 and the internal thread 9 enables convenient installation and disassembly of the lamp body 1 and the lamp cover 4.
[0043] The inner wall of the air duct 1205 is rotatably connected to a pair of rubber seals 1206, and the pair of rubber seals 1206 are in contact with each other.
[0044] By setting the rubber seals 1206, a seal is formed when not under compression, blocking airflow between the connecting cylinder 1202 and the inflatable airbag 1201. When under compression, the pair of rubber seals 1206 open, allowing airflow between the connecting cylinder 1202 and the inflatable airbag 1201.
[0045] The lamp body 1 has multiple evenly distributed heat dissipation strips 13 fixedly connected to its outer wall, and a pair of elastic buckles 14 fixedly connected to its outer wall.
[0046] The heat dissipation strip 13 helps to quickly dissipate the heat generated by the light source 2 during operation, reducing its retention time. The elastic buckle 14 facilitates the fixed installation of the downlight.
[0047] The circuits, electronic components, and chip modules involved in this utility model are all existing technologies, which can be fully implemented by those skilled in the art, and need not be elaborated upon. The content protected by this utility model does not involve any improvement to the software and methods.
[0048] All standard parts used in the application documents can be purchased from the market. All components in this application document can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. The electrical components mentioned in this document are all electrically connected to the external main controller and power supply, and the main controller is a conventional known device that can play a control role.
[0049] The working principle of this utility model is as follows:
[0050] In use, the lampshade 4 is threadedly connected to the lamp body 1 and fits onto the outer wall of the lamp body 1 near the top, pressing down the prism diffuser plate 5. Simultaneously, the bottom end of the lampshade 4 contacts the sealing ring 11, sealing the threaded connection between the lamp body 1 and the lampshade 4. This seals the gap between the external thread 8 and the internal thread 9, preventing liquid flow and penetration. Then, a pair of extrusion screws 1204 are rotated upwards, causing the piston plate 1203 to move upwards, extruding the air inside the extrusion connecting cylinder 1202 and opening a pair of... The rubber sealing sheet 1206 is inflated into the airbag 1201, causing it to expand and tightly wrap around the sealing ring 11 and the outer wall of the lamp cover 4 to achieve a seal, further sealing the connection between the lamp body 1 and the lamp cover 4, making it difficult for liquid to penetrate into the downlight. Next, the light source 2 emits light, which is reflected into a narrow-angle beam by the first reflector bowl 3, and then directly irradiated outward by the prism diffuser plate 5. Then, the edge scattered light is reflected by the second reflector bowl 6 to the blind area of the first reflector bowl 3, and then uniformly irradiated through the light-transmitting plate 7.
[0051] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.
Claims
1. A direct-down energy-saving waterproof downlight, characterized in that, include: The lamp body (1) and the light source (2) are fixedly connected inside the lamp body (1). A sealing frame (10) is fixedly connected to the outer wall of the lamp body (1). A lamp cover (4) is threadedly connected to the outer wall of the lamp body (1). The inner wall of the sealing frame (10) is in close contact with the outer wall of the lamp cover (4). A sealing ring (11) is fixedly connected to the inner bottom end of the sealing frame (10). The top end of the sealing ring (11) is in close contact with the bottom end of the lamp cover (4). A prism diffuser plate (5) is fixedly connected to the top end of the lamp body (1). The top end of the prism diffuser plate (5) is in close contact with the inner wall of the lamp cover (4). An inflatable sealing mechanism (12) is provided on the sealing frame (10) and is used for the connection and sealing of the lamp cover (4) and the lamp body (1). The inflatable sealing mechanism (12) includes an inflatable airbag (1201) fixedly connected inside the sealing frame (10). The outer wall of the inflatable airbag (1201) is in contact with the outer wall of the sealing ring (11) and the lampshade (4). A pair of connecting cylinders (1202) are fixedly connected to the bottom end of the sealing frame (10), and a piston plate (1203) is slidably connected inside the connecting cylinder (1202). A compression screw (1204) is threadedly connected to the bottom end of the connecting cylinder (1202), and the top end of the compression screw (1204) is rotatably connected to the bottom end of the piston plate (1203). An air guide pipe (1205) is fixedly connected to the top end of the connecting cylinder (1202), and the top end of the air guide pipe (1205) penetrates the bottom end of the sealing frame (10) and is fixedly connected to the bottom end of the inflatable airbag (1201).
2. The direct-lit energy-saving waterproof downlight according to claim 1, characterized in that, The inner wall of the lamp body (1) is fixedly connected to a first reflector bowl (3), and the first reflector bowl (3) is located outside the light source (2). The inner wall of the lamp cover (4) is fixedly connected to a second reflector bowl (6), and the inner walls of the first reflector bowl (3) and the second reflector bowl (6) are both provided with a vacuum silver plating layer.
3. A direct-lit energy-saving waterproof downlight according to claim 2, characterized in that, The inner wall of the lampshade (4) is fixedly connected to a light-transmitting plate (7), and the surface of the light-transmitting plate (7) is provided with a hydrophobic, oleophobic and anti-fouling film. The bottom end of the light-transmitting plate (7) is in contact with the top end of the second reflector bowl (6).
4. A direct-lit energy-saving waterproof downlight according to claim 1, characterized in that, The outer wall of the lamp body (1) is provided with an external thread (8), and the inner wall of the lamp cover (4) is provided with an internal thread (9) near the bottom, and the external thread (8) and the internal thread (9) are threadedly connected.
5. A direct-lit energy-saving waterproof downlight according to claim 1, characterized in that, The inner wall of the air duct (1205) is rotatably connected to a pair of rubber seals (1206), and the pair of rubber seals (1206) are in contact with each other.
6. A direct-lit energy-saving waterproof downlight according to claim 1, characterized in that, The outer wall of the lamp body (1) is fixedly connected with a plurality of evenly distributed heat dissipation strips (13), and the outer wall of the lamp body (1) is fixedly connected with a pair of elastic buckles (14).