Outdoor lighting lamp shell with dustproof and drainage functions

Abstract

This utility model discloses an outdoor lighting fixture housing with dustproof and drainage functions, including an upper housing and a lower housing, which together form an internal cavity. The internal cavity contains a light source cavity and a driving cavity, with an isolation plate between the light source cavity and the driving cavity. The bottom of the lower housing has a guide slope and at least two drainage holes, with a water-blocking flange outside the drainage holes. The upper housing has a labyrinth-type ventilation groove, inside which a dust filter screen is installed. An annular water collection groove is located inside the housing near the drainage holes and is connected to the drainage holes via a guide channel. This structure, through multi-stage guided drainage and a labyrinth-type dustproof structure, effectively improves the environmental adaptability of the outdoor lighting fixture, exhibiting good protective performance and reliability.

Description

Technical Field

[0001] This utility model relates to an outdoor lighting device structure, and more particularly to an outdoor lighting fixture housing with dustproof and drainage functions, belonging to the field of lighting equipment structure. Background Technology

[0002] With the widespread use of outdoor lighting equipment, its operating environment often faces various complex natural factors such as rain, dust, and sand. Traditional lamp housings mostly employ single sealing or protective measures, making it difficult to ensure both ventilation and heat dissipation while also providing dust and water resistance. Especially in rainy or dusty weather, moisture and dust can easily enter the internal cavity through gaps or pores in the housing, causing electronic components to become damp and short-circuit, seriously affecting the lifespan and safety of the lamp. Although some lamps have simple drainage holes or dust filters, their low drainage efficiency or weak dust filtration capacity often prevents them from effectively coping with harsh environments in the long run, leading to poor drainage or filter clogging. Therefore, how to achieve excellent dust and drainage functions while ensuring ventilation and heat dissipation has become a key technological direction for improving the reliability of outdoor lighting fixtures. Utility Model Content

[0003] The purpose of this utility model is to provide an outdoor lighting fixture housing with dustproof and drainage functions, solving the problems of poor drainage effect and weak dustproof capability of the housing in the prior art.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: An outdoor lighting fixture housing with dustproof and drainage functions includes an upper housing and a lower housing, wherein the upper housing and the lower housing enclose an internal cavity, the internal cavity includes a light source cavity and a driving cavity, and an isolation plate is provided between the light source cavity and the driving cavity; The bottom of the lower housing is provided with a flow guiding slope, and the lower end of the flow guiding slope is provided with at least two drainage holes. The outer side of the drainage holes is provided with an annular flange, and the top of the flange is provided with a water-blocking flange. The upper housing is provided with a labyrinth-type ventilation channel, and a replaceable dust filter is provided inside the ventilation channel; The drainage hole is connected to an annular water collection trough inside the shell, and the water collection trough is provided with a flow guiding channel; The outer surface of the shell is provided with several longitudinal water-guiding ribs to guide rainwater to flow in a predetermined direction and prevent water accumulation.

[0005] This utility model uses a labyrinthine ventilation structure with a dust filter to prevent dust from entering the cavity. At the same time, it uses a drainage slope, a water collection trough and a water-blocking structure to achieve multi-stage drainage and rapid drainage of accumulated water. The overall structure is simple and highly reliable, and it is particularly suitable for use in lighting fixture housings in complex outdoor environments. Attached Figure Description

[0006] Figure 1 This is a perspective view of the overall structure of this utility model; Figure 2 This is a cross-sectional view of the shell structure of this utility model; Figure 3 This is a partially enlarged view of the drainage structure of this utility model; Figure 4 This is a schematic diagram of the dustproof and ventilation structure of this utility model; Figure 5 This is a schematic diagram of the drainage path flow of this utility model.

[0007]

Attached reference numerals

[0008] Implementation method one: such as Figure 1 As shown, an outdoor lighting fixture housing with dustproof and drainage functions includes an upper housing 1 and a lower housing 2, which are fixedly combined by screwing together to form a sealed cavity. The internal cavity is divided into a light source cavity 3 and a drive cavity 4, which are separated by an isolation plate 5 to prevent moisture or dust from entering the drive circuit area from the light source area, thus improving the overall protection level. The isolation plate 5 is preferably integrally formed with the lower housing 2 by injection molding to avoid moisture leakage due to seams, ensuring that the light source cavity and drive cavity remain independently sealed. An annular sealing ring is provided at the screw connection between the upper housing 1 and the lower housing 2 to prevent rainwater and dust from seeping into the cavity through the seam, enhancing the overall airtightness.

[0009] Implementation Method Two: (e.g.) Figure 2 As shown, the bottom of the lower shell 2 is provided with multiple guide slopes 6, the angle of which is designed to match the central drain hole 7 at the bottom. After liquid accumulates on the slopes, it flows smoothly to the drain hole. A flange 8 is provided around the drain hole, and a water-blocking flange 9 is provided on the upper part of the flange. This effectively blocks water droplets from the ground or splashing into the hole, improving drainage while preventing backflow. The water-blocking flange 9 is preferably an outwardly protruding arc-shaped structure, which can effectively extend the water-blocking range and enhance the water-blocking performance without affecting drainage.

[0010] Implementation Method 3: For example Figure 3 As shown, the drain hole 7 is connected to the annular water collection tank 12 located inside the lower shell, and the middle of the water collection tank is connected to the flow guide channel 13, forming a gravity-guided drainage channel system. The drainage path is clear, the water flow does not stagnate, and the drainage is rapid.

[0011] Implementation Method Four: (e.g.) Figure 4As shown, the upper housing 1 is provided with a labyrinthine ventilation channel 10, and a dust filter 11 is embedded inside the ventilation channel. The dust filter is detachable and replaceable for easy maintenance. The ventilation channel adopts a serrated, multi-bend path inside, reducing the probability of dust and moisture entering the housing and improving the overall dustproof level. The dust filter 11 is preferably made of a waterproof and breathable membrane material. This material has a microporous structure, which can effectively block dust particles from entering the cavity while allowing air to pass through, achieving a balance between dustproof and breathable functions.

[0012] Implementation Method 5: (e.g.) Figure 5 As shown, the outer wall of the shell is provided with several longitudinal water guiding ribs 14, which guide rainwater to flow out quickly along the outer surface of the shell, effectively preventing the accumulation of water outside the shell at the edge, thus preventing backflow or seepage risks.

[0013] To further clarify the technical solution of this utility model, in conjunction with the above appendix... Figure 1-5 As can be seen from the internal structure shown, this embodiment also possesses the following refined features implemented by conventional mechanical structures: The internal cavity is divided into a light source cavity and a driving cavity, with an isolation plate between them; The guide slope is inclined at a specific angle to facilitate gravity-driven water conduction; The labyrinthine ventilation slot is formed into a curved channel structure, and arc-shaped baffles are provided inside or around it to increase the airflow path length and block water vapor from entering directly. The annular water collection trough can specifically be a closed annular groove structure; Raised ribs may also be formed near the flow channel or drainage hole to strengthen the flow or provide structural support.

[0014] All of the above features can be integrally formed using conventional injection molds. The specific bending angle, curvature, and rib dimensions can be adaptively set by those skilled in the art based on the actual internal space size of the lamp housing.

[0015] The above embodiments can be adjusted in terms of structural dimensions and materials according to the specific installation location and usage environment of the lamps, and are still within the protection scope of this utility model.

Claims

1. An outdoor lighting fixture housing having a dust-proof drainage function, characterized by, The utility model provides a kind of LED street lamp, including upper shell and lower shell, the upper shell is surrounded with lower shell and is formed into internal cavity, the internal cavity is divided into light source cavity and drive cavity, and is equipped with isolation plate between the two, the bottom of the lower shell is equipped with flow guide inclined plane and at least two drain holes, and the periphery of drain hole is equipped with annular flange, the top of the flange is equipped with water-shielding convex edge, the upper shell is equipped with labyrinth ventilation groove, the ventilation groove is equipped with dust filter screen, the drain hole is communicated with annular water collecting groove, the water collecting groove is connected with flow guide channel, and the shell outside is also equipped with water guide rib.

2. The case according to claim 1, characterized in that: The flow guide inclined plane is arranged obliquely along the lower shell to the direction of drain hole, so as to facilitate water flow to automatically collect to drain hole.

3. The case according to claim 1, characterized by: The labyrinth ventilation groove is multi-segment curved channel structure, and is provided with detachable dust filter screen inside, so as to facilitate maintenance and replacement.

4. The case of claim 1, wherein: The water-shielding convex edge outside the drain hole is outwardly protruding arc-shaped baffle, which prevents ground splashed water from entering.

5. The case of claim 1, wherein: The isolation plate adopts integrated structure, and separates light source cavity and drive cavity into independent sealed space.

6. The case of claim 1, wherein: The water collecting groove is closed annular groove structure, and is arranged below flow guide inclined plane, with water collecting and buffering function.

7. The case of claim 1, wherein: The water guide rib is a plurality of longitudinally arranged convex ribs, and is distributed on the outer surface of the shell, for guiding rainwater to flow along the predetermined path.

8. The case of claim 1, wherein: The upper shell and the lower shell are fixed by screwing, and sealing ring is arranged at joint.

9. The case of claim 1, wherein: The dust filter screen is made of waterproof and breathable film material, with dustproof and breathable functions.

Images