Moistureproof lamp

Abstract

The utility model provides a moisture-proof lamp, which relates to the technical field of moisture-proof lamps and comprises an inner lampshade, an outer protective cover and a base, the inner lampshade and the outer protective cover are coaxially nested, a plurality of clamping protrusions are distributed on the inner lampshade along the circumference, and the base is provided with annular guide grooves matched and clamped with the clamping protrusions. A stepped sealing groove is formed in the side of the guide groove, and the guide groove and the outer protective cover are in multi-stage interference fit through the stepped sealing groove; an annular airflow channel is formed between the inner lampshade and the outer protective cover, and flow guide ribs which continuously and spirally extend are arranged on the inner wall of the annular airflow channel. Radial flow guide grooves are distributed in the circumference direction of the edge of the base, and an elastic sealing ring is arranged at the joint of the clamping protrusion and the guide groove. The technical effects of long-acting moisture prevention and autonomous drainage can be achieved.

Description

Technical Field

[0001] This utility model relates to the field of moisture-proof lamp technology, and specifically to a moisture-proof lamp. Background Technology

[0002] Moisture-proof lamps, as specialized lighting equipment, are widely used in high-humidity environments such as bathrooms, basements, and outdoor corridors. Their core design requirements are to achieve long-term moisture and condensation prevention in enclosed spaces, while also ensuring ease of maintenance.

[0003] Traditional moisture-proof lamps generally rely on a single sealing structure and passive drainage design, which can easily lead to performance degradation in complex temperature and humidity change scenarios. In other words, most products use rubber gasket compression sealing, which can easily undergo permanent deformation after long-term thermal expansion and contraction or frequent disassembly, resulting in micro gaps at the sealing interface. In addition, the single-layer lampshade structure lacks an active drainage design, allowing condensate to drip directly from the inner wall to the electrical component area, causing lighting failure or even electrical safety hazards.

[0004] Therefore, this utility model proposes a moisture-proof lamp. Utility Model Content

[0005] In view of the shortcomings of the existing technology, this utility model proposes a moisture-proof lamp that can achieve long-term moisture protection and self-drainage.

[0006] The technical solution of this utility model is implemented as follows:

[0007] A moisture-proof lamp includes a coaxially nested inner lampshade and an outer protective cover, as well as a base. The inner lampshade has several snap-fit ​​protrusions distributed along its circumference. The base has an annular guide groove that matches and snaps into the snap-fit ​​protrusions. A stepped sealing groove is provided on the side of the guide groove, and the stepped sealing groove forms a multi-stage interference fit with the outer protective cover. An annular airflow channel is formed between the inner lampshade and the outer protective cover. The inner wall of the annular airflow channel has continuously spirally extending guide ribs. The base has radial guide grooves distributed along its perimeter. An elastic sealing ring is provided at the connection between the snap-fit ​​protrusions and the guide grooves.

[0008] Preferably, the stepped sealing groove includes a first-level inclined sealing surface, a second-level compensation groove, and a third-level blocking edge arranged sequentially from the inside to the outside, and the second-level compensation groove is filled with an elastic deformation material layer.

[0009] Preferably, the surface of the first-stage inclined sealing surface is provided with hydrophobic texture.

[0010] Preferably, the height of the third-level blocking edge is less than the total depth of the stepped sealing groove.

[0011] Preferably, the outer wall of the inner lamp cover is provided with a flow guide protrusion, one side of which contacts the flow guide rib, and the protrusion is evenly distributed along the circumferential direction; the top of the outer protective cover is provided with several ventilation holes.

[0012] Preferably, the elastic sealing ring has a multi-layer composite structure, including an inner layer of porous elastomer and an outer layer of dense elastic layer, wherein the outer layer covers the outer periphery of the inner layer.

[0013] Preferably, the guide groove has multiple V-shaped guide ridges evenly distributed along its length, and a gradually narrowing guide channel is formed between two guide ridges.

[0014] Compared with the prior art, the present invention has the following advantages:

[0015] In this design, the inner lampshade, through the radial positioning of the snap-fit ​​protrusion and guide groove, combined with the bidirectional compression deformation of the elastic sealing ring, forms a double-sealed barrier in both radial and axial directions with the outer protective cover. This effectively blocks moisture from seeping in through the seams. The radial guide groove and spiral guide rib work together to accelerate the discharge of condensate using the airflow vortex effect. The snap-fit ​​structure ensures quick assembly and disassembly, while the multi-stage interference fit of the stepped sealing groove avoids the degradation of sealing performance caused by repeated disassembly, ensuring long-term reliability. The directional airflow formed in the annular airflow channel, combined with the spiral guidance of the guide ribs for moisture, reduces the temperature difference between the inside and outside of the lampshade, inhibiting the generation and adhesion of condensate on the light-transmitting surface, thus achieving long-lasting moisture-proof and self-draining technical effects. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model 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 utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a cross-sectional structural diagram of a moisture-proof lamp according to the present invention;

[0018] Figure 2 This is a schematic diagram of the stepped sealing groove structure;

[0019] Attached diagram labels: 1-Inner lamp cover; 11-Snap-fit ​​protrusion; 12-Elastic sealing ring; 13-Guide protrusion; 2-Outer protective cover; 3-Base; 31-Annular guide groove; 32-Stepped sealing groove; 321-Inclined sealing surface; 322-Compensation groove; 323-Blocking edge; 33-Guide groove; 34-Guide ridge; 4-Annular airflow channel; 41-Guide rib. Detailed Implementation

[0020] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," "third," and "fourth," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0023] In this embodiment, the device includes a coaxially nested inner lampshade 1, an outer protective cover 2, and a base 3. The inner lampshade 1 has several snap-fit ​​protrusions 11 distributed along its circumference. The base 3 is provided with an annular guide groove 31 that is adapted to snap-fit ​​the snap-fit ​​protrusions 11. A stepped sealing groove 32 is provided on the side of the guide groove, and the stepped sealing groove 32 forms a multi-stage interference fit with the outer protective cover 2. An annular airflow channel 4 is formed between the inner lampshade 1 and the outer protective cover 2. The inner wall of the annular airflow channel 4 is provided with continuously spirally extending guide ribs 41. The base 3 has radial guide grooves 33 distributed along its perimeter. An elastic sealing ring 12 is provided at the connection between the snap-fit ​​protrusions 11 and the guide groove.

[0024] Working principle: In this design, the inner lampshade 1 is radially positioned by the snap-fit ​​protrusion 11 and the guide groove, combined with the bidirectional compression deformation of the elastic sealing ring 12, forming a radial and axial double sealing barrier together with the outer protective cover 2. This effectively blocks moisture from seeping in through the joint. The radial guide groove 33 and the spiral guide rib 41 work together to accelerate the discharge of condensate by utilizing the airflow vortex effect. The snap-fit ​​structure ensures quick assembly and disassembly, while the multi-stage interference fit of the stepped sealing groove 32 avoids the attenuation of sealing performance caused by repeated disassembly, ensuring long-term reliability. The directional airflow formed in the annular airflow channel 4, combined with the spiral guidance of moisture by the guide rib 41, reduces the temperature difference between the inside and outside of the lampshade, inhibits the generation and adhesion of condensate on the light-transmitting surface, and achieves the technical effect of long-term moisture protection and self-drainage.

[0025] In this embodiment, the stepped sealing groove 32 includes a first-level inclined sealing surface 321, a second-level compensation groove 322 and a third-level blocking edge 323 arranged sequentially from the inside to the outside. The second-level compensation groove 322 is filled with an elastic deformation material layer.

[0026] In this embodiment, the surface of the first-stage inclined sealing surface 321 is provided with hydrophobic texture.

[0027] In this embodiment, the height of the third-level blocking edge 323 is less than the total depth of the stepped sealing groove 32.

[0028] In this embodiment, the outer wall of the inner lamp cover 1 is provided with a flow guide protrusion 13, one side of which contacts the flow guide rib 41, and the protrusion is evenly distributed along the circumferential direction; the top of the outer protective cover is provided with several ventilation holes.

[0029] In this embodiment, the elastic sealing ring 12 is a multi-layer composite structure, including an inner layer of porous elastomer and an outer layer of dense elastic layer, wherein the outer layer covers the outer periphery of the inner layer.

[0030] In this embodiment, the guide groove 33 has a plurality of V-shaped guide ridges 34 evenly distributed along its length, and a gradually narrowing guide channel is formed between two guide ridges 34.

[0031] 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, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A moisture resistant lamp, characterized by: The application relates to a lampshade, which comprises a coaxially nested inner lampshade (1) and outer protective cover (2) and a base (3), the inner lampshade (1) is provided with a plurality of clamping protrusions (11) distributed along the circumference, the base (3) is provided with annular guide grooves (31) matched with the clamping protrusions (11), the side of the guide grooves is provided with stepped sealing grooves (32) and the stepped sealing grooves (32) form a multi-stage interference fit with the outer protective cover (2), the inner lampshade (1) and the outer protective cover (2) form an annular airflow channel (4), the inner wall of the annular airflow channel (4) is provided with continuously spirally extending flow guide ribs (41), the base (3) is provided with radial flow guide grooves (33) distributed along the edge circumferential length, and the connecting part of the clamping protrusions (11) and the guide grooves is provided with an elastic sealing ring (12).

2. A moisture resistant lamp according to claim 1, wherein: The stepped sealing groove (32) comprises a first-stage inclined sealing surface (321), a second-stage compensation groove (322) and a third-stage blocking edge (323) arranged in sequence from inside to outside, and the second-stage compensation groove (322) is filled with an elastic deformation material layer.

3. A moisture resistant lamp according to claim 2, wherein: The surface of the first-stage inclined sealing surface (321) is provided with hydrophobic lines.

4. A moisture resistant lamp according to claim 2, wherein: The height of the third-stage blocking edge (323) is smaller than the total depth of the stepped sealing groove (32).

5. A moisture resistant lamp according to claim 1, wherein: The outer wall of the inner lampshade (1) is provided with flow guide bosses (13), one side of the flow guide bosses (13) is in contact with the flow guide ribs (41), and the bosses are uniformly distributed along the circumferential direction; the top of the outer protective cover is provided with a plurality of air holes.

6. A moisture resistant lamp according to claim 1, wherein: The elastic sealing ring (12) is a multilayer composite structure, which comprises an inner layer of porous elastomer and an outer layer of dense elastic layer, and the outer layer is wrapped on the outer periphery of the inner layer.

7. A moisture resistant lamp according to claim 1 wherein: The flow guide grooves (33) are uniformly provided with a plurality of V-shaped flow guide ridges (34) along the length direction, and a tapered drainage channel is formed between the two flow guide ridges (34).

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