Waterproof breathable down lamp

Abstract

The waterproof and breathable down lamp comprises a cylindrical lamp holder and a light beam diffusion shell, the cylindrical lamp holder extends in the axial direction, and the light beam diffusion shell is of a conical structure which is narrow in the upper portion and wide in the lower portion and is connected with the lower end of the cylindrical lamp holder. The lower end of the cylindrical lamp holder penetrates through an upper hole of the light beam diffusion shell and then is provided with a first flange which is turned outwards and extends in the radial direction, the top of the light beam diffusion shell is provided with a second flange which is turned inwards and extends in the radial direction, the first flange is located under the second flange, and the first flange and the second flange are spaced in the axial direction to form a vertical airflow cavity. An annular gap is formed between the inner edge of the second flange and the outer wall of the cylindrical lamp holder, a unique ventilation channel is formed, the air permeability is improved, and the problem of water vapor accumulation caused by temperature difference in a suspended ceiling after a traditional down lamp is installed is effectively solved.

Description

Technical Field

[0001] This utility model relates to the field of lighting technology, specifically a waterproof and breathable downlight. Background Technology

[0002] In modern architectural lighting design, downlights are a common lighting device widely used in indoor ceiling environments. However, due to the limitations of their structural design, traditional downlights often prevent effective air circulation between the ceiling interior and the outside environment after installation. The interlayer above the ceiling is prone to generating large amounts of water vapor due to temperature variations. This water vapor is difficult to expel within the enclosed ceiling space, potentially leading to dampness, condensation, and even corrosion. This not only affects the lifespan of the lighting equipment but may also cause potential damage to the ceiling structure.

[0003] Furthermore, this poorly ventilated environment hinders heat dissipation within the light fixtures, further increasing the risk of damage. Therefore, addressing the issues of poor ventilation and water vapor buildup within the ceiling while ensuring the functionality of the downlights has become a pressing technical challenge. Summary of the Invention

[0004] To solve the above-mentioned technical problems, this utility model relates to a waterproof and breathable downlight. This structure is simple and reliable, effectively solving the aforementioned technical problems and is suitable for widespread use. To achieve the above objectives, this utility model is implemented through the following technical solution:

[0005] A waterproof and breathable downlight includes a cylindrical lamp holder and a beam diffuser shell. The cylindrical lamp holder extends axially, and the beam diffuser shell has a tapered structure that is narrower at the top and wider at the bottom and is connected to the lower end of the cylindrical lamp holder. The lower end of the cylindrical lamp holder passes through the upper hole of the beam diffuser shell and is provided with a first flange extending radially outward. The top of the beam diffuser shell is provided with a second flange extending radially inward. The first flange is located directly below the second flange and the two are axially spaced to form a vertical airflow cavity. The inner edge of the second flange and the outer wall of the cylindrical lamp holder form an annular gap.

[0006] Based on the above scheme and as a preferred embodiment of the above scheme: the upper surface of the first flange is provided with a plurality of circumferentially distributed support blocks, the inner side of the support blocks is in close contact with the outer wall of the cylindrical lamp holder, the support blocks extend downward into the annular gap, and the upper part of the support blocks is fixedly connected to the second flange of the beam diffuser shell.

[0007] Based on the above scheme and as a preferred embodiment of the above scheme: a diffuser plate is provided on the end face area of ​​the cylindrical lamp holder, and the diffuser plate is fixedly installed by ultrasonic welding.

[0008] Based on the above scheme and as a preferred embodiment of the above scheme: the side wall of the cylindrical lamp holder is provided with a radially penetrating wire hole, and the inlet of the wire hole is a flared-mouth diameter expansion structure.

[0009] Based on the above scheme and as a preferred embodiment of the above scheme: the outer surface of the cylindrical lamp holder is symmetrically provided with limiting blocks on the left and right sides, the inner surface of the limiting blocks is in contact with the outer surface of the cylindrical lamp holder, and the outer surface of the limiting blocks coincides with the upper edge of the beam diffuser shell. The lower end of each limiting block has two support rods, which extend until they enter the annular gap. The limiting block has a receiving cavity for accommodating a snap spring. The opening of the receiving cavity is provided with two opposing cantilever arms, and the two ends of the snap spring are respectively sleeved on the two cantilever arms.

[0010] The significant and beneficial technical advantages of this invention compared to existing technologies are as follows: By cleverly setting a vertical airflow cavity and an annular gap between the cylindrical lamp holder and the beam diffuser shell, and utilizing the axial spacing of the first and second flanges, a unique ventilation channel is formed, effectively solving the problem of water vapor accumulation inside the ceiling due to temperature differences after traditional downlight installation. This structure not only achieves natural air circulation, avoiding the corrosion of the lamp by a humid environment, but also significantly improves the heat dissipation efficiency of the lamp, extends its service life, and ensures the efficient realization of waterproof and breathable functions, greatly enhancing the reliability and stability of the downlight in complex environments. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of the downlight from the top.

[0012] Figure 2 This is a schematic diagram of the lower part of the overall structure of the downlight;

[0013] Figure 3 This is a cross-sectional view of a downlight. Detailed Implementation

[0014] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. However, the specific implementation methods and embodiments described below are for illustrative purposes only and are not intended to limit the present invention.

[0015] In the description of this utility model, it should be understood that the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the appendix. Figure 1The directions or positional relationships shown are for the purpose of describing this utility model only, and are not intended to indicate or imply that the device or component 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.

[0016] In the description of this application, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated.

[0017] To solve the above technical problems, such as Figure 1-3 As shown, this utility model designs a waterproof and breathable downlight, comprising a cylindrical lamp holder 1 and a beam diffuser shell 2. The cylindrical lamp holder 1 extends axially and is used to install corresponding lamp panel components. The beam diffuser shell 2 has a tapered structure that is narrow at the top and wide at the bottom and is connected to the lower end of the cylindrical lamp holder 1. This design can effectively guide the direction of light propagation. When light is emitted from the light source, it passes through the tapered beam diffuser shell 2, thereby achieving a more uniform and wider beam distribution.

[0018] The lower end of the cylindrical lamp holder 1 passes through the upper hole of the beam diffuser shell 2 and is provided with a radially outwardly extending first flange 3. The top of the beam diffuser shell 2 is provided with a radially inwardly extending second flange 4. The first flange 3 is located directly below the second flange 4, and the two are axially spaced to form a vertical airflow cavity 9. The inner edge of the second flange 4 and the outer wall of the cylindrical lamp holder 1 form an annular gap 10. In traditional downlight installations, air circulation above and below the ceiling is poor. This structure easily leads to moisture accumulation above the ceiling, especially in humid environments. The inability of moisture to escape may cause the ceiling to become damp, moldy, or even damaged. The vertical airflow cavity... The unique structural design of 9 and the annular gap 10 provides additional airflow channels, optimizing the breathability of the ceiling above and below. This allows moisture above the ceiling to be discharged through these channels, effectively improving air circulation above and below the ceiling. This design not only solves the problem of moisture accumulation caused by the traditional closed structure of ceilings in downlights, but also significantly improves the service life of the ceiling and the overall comfort of the environment. It is worth mentioning that the first flange 3 guides the airflow path to prevent water vapor from flowing into the electronic components inside the lamp holder, cleverly isolating the electronic components inside the lamp holder from external moisture and effectively protecting the electronic components from water vapor corrosion.

[0019] In addition, this ventilation mechanism not only helps to expel internal moisture, but also promotes heat dissipation inside the lamp, avoiding performance degradation caused by heat accumulation.

[0020] In this embodiment, it is further preferred that the upper surface of the first flange 3 is provided with a plurality of circumferentially distributed support blocks 5. The inner side of the support block 5 is in close contact with the outer wall of the cylindrical lamp holder 1. The support block 5 extends downward and is inserted into the annular gap 10. The upper part of the support block 5 is fixedly connected to the second flange 4 of the beam diffuser shell 2. These support blocks 5 can effectively share the connection force between the beam diffuser shell 2 and the cylindrical lamp holder 1, ensuring that the connection between the two is more solid. This makes the connection between the beam diffuser shell 2 and the cylindrical lamp holder 1 tighter, avoiding loosening caused by external impact or long-term use, and significantly improving the overall structural stability of the lamp.

[0021] In this embodiment, it is further preferred that the end face area of ​​the cylindrical lamp holder 1 is provided with a diffuser plate (not shown in the figure). The diffuser plate is fixedly installed by ultrasonic welding. The diffuser plate can diffuse light evenly, reduce glare, and provide a softer and more uniform lighting effect. Ultrasonic welding is not only strong and reliable, but also forms a good sealing effect, enhances the waterproof and moisture-proof performance of the lamp, protects the internal electronic components from water vapor corrosion, and ensures the stability and reliability of the lamp in a humid environment.

[0022] In this embodiment, it is further preferred that the side wall of the cylindrical lamp holder 1 is provided with a radially penetrating wire passage hole 6. The inlet of the wire passage hole 6 is a flared-mouth diameter expansion structure. By providing a radially penetrating wire passage hole 6 on the side wall of the cylindrical lamp holder 1, the wire can easily pass through the lamp holder and connect to the internal electronic components. This design simplifies the wire installation process, reduces installation time and cost, and the flared-mouth diameter expansion structure of the wire passage hole 6 can better guide the wire into the lamp holder, preventing the wire from being damaged during installation and improving the convenience and reliability of installation.

[0023] In this embodiment, it is further preferred that limiting blocks 7 are symmetrically arranged on the left and right sides of the outer surface of the cylindrical lamp holder 1. The inner surface of the limiting block 7 is in contact with the outer surface of the cylindrical lamp holder 1, and the outer surface of the limiting block 7 coincides with the upper edge of the beam diffuser shell 2. Each limiting block 7 has two support rods at its lower end, and the support rods extend into the annular gap 10. The limiting block 7 has a receiving cavity for accommodating the snap-fit ​​spring. The opening of the receiving cavity is provided with two opposing cantilever arms 8. The two ends of the snap-fit ​​spring are respectively sleeved on the two cantilever arms 8. The snap-fit ​​spring is easy and quick to assemble and achieves a stable fit. The installation of the snap-fit ​​spring facilitates the rapid layout and installation of the downlight in the later stage and improves the installation efficiency.

[0024] The above embodiments are merely preferred embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made by those skilled in the art based on the structure, shape, and principle of this utility model should be included within the scope of protection of this utility model.

Claims

1. A waterproof and breathable downlight, characterized in that: The device includes a cylindrical lamp holder and a beam diffuser shell. The cylindrical lamp holder extends axially, and the beam diffuser shell has a tapered structure that is narrower at the top and wider at the bottom and is connected to the lower end of the cylindrical lamp holder. The lower end of the cylindrical lamp holder passes through the upper hole of the beam diffuser shell and is provided with a first flange that extends radially outward. The top of the beam diffuser shell is provided with a second flange that extends radially inward. The first flange is located directly below the second flange and the two are axially spaced to form a vertical airflow cavity. The inner edge of the second flange and the outer wall of the cylindrical lamp holder form an annular gap.

2. The waterproof and breathable downlight according to claim 1, characterized in that: The upper surface of the first flange is provided with a plurality of circumferentially distributed support blocks. The inner side of the support block is in close contact with the outer wall of the cylindrical lamp holder. The support block extends downward and is inserted into the annular gap. The upper part of the support block is fixedly connected to the second flange of the beam diffuser shell.

3. A waterproof and breathable downlight according to claim 1, characterized in that: A diffuser plate is provided on the end face of the cylindrical lamp holder, and the diffuser plate is fixedly installed by ultrasonic welding.

4. A waterproof and breathable downlight according to claim 1, characterized in that: The cylindrical lamp holder has a radially penetrating wire hole on its side wall, and the entrance of the wire hole has a flared, enlarged diameter structure.

5. A waterproof and breathable downlight according to claim 1, characterized in that: The cylindrical lamp holder has symmetrically arranged limiting blocks on its outer surface. The inner surface of the limiting blocks is in contact with the outer surface of the cylindrical lamp holder, and the outer surface of the limiting blocks coincides with the upper edge of the beam diffuser shell. Each limiting block has two support rods at its lower end, which extend into the annular gap. The limiting block has a receiving cavity for accommodating a snap-fit ​​spring. The opening of the receiving cavity is provided with two opposing cantilever arms, and the two ends of the snap-fit ​​spring are respectively sleeved on the two cantilever arms.

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