Large-scale air purification system integrated into a self-contained streetlamp
Patent Information
- Authority / Receiving Office
- FR · FR
- Patent Type
- Patents
- Current Assignee / Owner
- DADOUN DAVID
- Filing Date
- 2019-03-11
- Publication Date
- 2026-06-26
AI Technical Summary
Streetlights are underutilized in terms of air purification capabilities, and existing solutions do not effectively address the removal of PM2.5 and PM10 particles, relying solely on natural air currents which are insufficient.
A self-contained streetlamp integrated with an air filtration module using HEPA filters, a DC motor-turbine system for enhanced air intake, sensors for pollution measurement, a control box with data management, and additional features like rainwater collection, anti-pollution plants, and LED lighting for signage, all working together to enhance air purification.
The integrated streetlamp effectively filters PM2.5 and PM10 particles, provides comprehensive air quality data, and contributes to urban landscape mapping, while also offering energy-efficient lighting and additional air purification through rainwater misting and plant absorption.
Smart Images

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Abstract
Description
Title of the invention: Large-scale air purification device included in a self-contained streetlamp
[0001] The present invention relates to a large-scale air purification device included in a self-contained streetlamp.
[0002] The main purpose of streetlights currently is to illuminate the streets to facilitate travel at night.
[0003] The device, according to the inventor, addresses the underutilization of streetlights. It comprises, in its first characteristic, an air filtration module, specifically designed to treat PM2.5 and PM10 particles. This filtration is achieved through a set of HEPA filters. Air enters the purification system through a 360-degree grille, allowing air intake from all sides, thus harnessing the flow created by wind and various air currents related to the positioning of buildings relative to each other, or even vehicle traffic. Since the use of these natural flows is insufficient, it will be coupled with a DC motor connected to a turbine.
[0004] One of the grilles will be removable so that the air filters that make up the product can be changed.
[0005] At the top of the tube is a removable control box, allowing for component replacement in case of failure. This box will house a sensor for measuring the level of microparticles (PM2.5 and PM10, as seen above) in the air, a set of sensors for acquiring meteorological data, a module for transmitting the collected data to our users, and finally, a microcontroller to manage all the components of this box. The collected data will be stored in a database and / or a blockchain for delivery to our clients, enabling them to map the urban landscape near the products using this data.
[0006] With regard to urban lighting, in addition to the LED lighting present at its top and equivalent to the classic lamppost, a blue LED strip running the entire length of the support tube will be added in order to provide roadside signage and support the operation of the lighting mentioned above.
[0007] At the top of the product, there is a rainwater collection system, which then stores and filters the rainwater as it flows through the tank. This water is then used by humidifiers to act as a misting system. and lightly fix dust or pollen to the ground, thus contributing to air purification.
[0008] Finally, a set of anti-pollution plants can be fixed within the product and this in a complementary role also of treating microparticles contained in the air.
[0009] The attached drawings illustrate the invention:
[0010] [Fig. 1] represents in isometric and exploded view, the device of the product.
[0011] [Fig.2] represents in cross-section, the apex of the product device.
[0012] [Fig.3] represents in cross-section, the base of the product device.
[0013] [Fig.4] represents in cross-section, the apex of the product device.
[0014] [Fig.5] represents, in rear view, the top of the product device.
[0015] [Fig.6] represents in cross-section, a variant of the top of this device.
[0016] With reference to these drawings, the device comprises, at its top, a solar panel (3) attached to the product structure, and below this structure, a set of low-energy LEDs (4). Extending from the upper structure is a curve (5) inclined at approximately 10 degrees. On this curve (5), and extending along the ends of the upper part of the structure, is an extrusion (6) that channels the flow of fluids towards the water tank (7), located at the center of the curve (5).
[0017] Said tank (7) is composed at its top of a hole allowing the flow of the directed fluid, a shoulder (8) allowing it to hold and
[0018] to be easily removable, as well as a removable filter (11) in the form of a drawer, made possible by the shoulder (8) and the hole (10). At the bottom of this tank (7), a series of holes, each containing a sealing washer, are designed to accommodate the rods (12) of the humidifiers (13). This rod (12) contains a porous filter allowing water to flow to the humidifiers (13). The holes (14) on the tube (15) are designed to accommodate the humidifiers (13).
[0019] At the base of the curvature (5) of the product is a tubular assembly forming the base of the product. This tubular base is composed of different parts. At the base of the tube (16) is a compartment for housing the battery and the various modules associated with their loads. Attached to this base is the fixed grid (17) encompassing all the filters (1). Opposite the fixed grid (17) is the removable grid (18) for changing all the filters (1). This grid (18) is attached to the tube (15) by means of small plates rotating around an axis fixed to the tube (15) and operated by a key. Two extrusions (19) and (20) attached to the tube (15) are positioned at the top and bottom of the filters (1) to hold the assembly in place.
[0020] Above the filter assembly (1) is a pocket with a diameter equivalent to the inner diameter of the filters (1), surmounted by a thickened rib (21) directing the airflow towards the outlet. This outlet is visible at the level of the grille (22).
[0021] As regards the movement of the airflow, it will be done both by means of flows created by man (vehicles, layout of buildings) and by means of a direct current motor coupled to a turbine which will be housed in the dwelling (23).
[0022] The control unit (24), which includes all the sensors, modules, and microcontrollers related to the product, is located within the tube (15). This unit (24) contains a drawer that allows for part replacement if necessary. It is held in place by means of the same system as the removable grid (18).
[0023] At approximately 1000 mm from the ground, a semi-circular milling (25) begins on the side where the apex (2) is located, extending along the entire length of the tube (15) in order to accommodate an LED strip (26) for roadside signage. On the opposite side, there is also a rectangular strip-shaped milling (27) intended for the optional attachment of pollution-absorbing plants via a hanging system connected to the two holes (28).
[0024] Within the tube (15) is a recess for housing the screen (29), defined as a commercially available screen approximately thirteen to fifteen inches in size and positioned at human height. Below this is a set of USB ports (not shown) for charging a phone.
[0025] According to a variant illustrated in [Fig.6], we can have a vertex
[0026] (2) of the product in continuity with the tube (15), so the tank (7) is in the middle and the solar panel (3) follows the rounded shape and is slightly curved in order to collect rainwater in the tank (7).
[0027] In the case where the product is put in place by 3D printing or plastic injection, the structure can accommodate within it steel rods or any other materials having sufficient rigidity to play the role of "support" and thus allow the structure to acquire the necessary solidity.
[0028] With a view to both energy saving and cost reduction, the product is modular to allow the parts to be assembled directly on the site where it will be installed.
[0029] By way of non-limiting example, the product will have dimensions of approximately 6000 mm in height, a diameter of 200 millimeters.
[0030] The device according to the invention is particularly intended to filter and purify air on a large scale.
Claims
Demands
1. A self-contained streetlamp comprising an upper structure beneath which extends an array of low-energy LEDs (4), and a base provided with a tube (15) and a filtering device, the filtering device comprising an array of HEPA filters (1), a turbine coupled to a motor and received in a housing (23) to create an airflow passing through the array of filters, and a 360-degree grille, said grille being in two parts, a fixed part (17) and a removable part (18), and encompassing the array of filters (1), the streetlamp also comprising a control box (24) arranged in the tube (15), the control box comprising an array of sensors for measuring a rate of microparticles and acquiring meteorological data, a module for sending the data measured and acquired by the array of sensors, and a microcontroller for managing the array of sensors and the sending module,and the self-contained streetlamp being equipped with a rainwater harvesting system comprising an extrusion forming a channel (6), a water recovery tank (7) and humidifiers (13) opening from the tube (15) through perforations (14), said extrusion assembly allowing the flow of water into the tank, and said humidifiers comprising rods (12) housed in holes provided in the bottom of the tank (7).
2. Self-contained streetlamp according to claim 1, comprising a strip of LEDs housed in a milling extending into the tube (15).
3. Self-contained streetlamp according to any one of the preceding claims, comprising a screen (29) fixed in a recess formed in the tube (15).
4. Self-contained floor lamp according to claim 3, comprising a set of USB ports arranged under the screen.
5. Self-contained streetlamp according to any one of the preceding claims, comprising anti-pollution plants attached to said streetlamp by a system of hooks shaped to connect to the holes (28) provided in a band (27) of the tube (15).
6. Self-contained streetlamp according to any one of the preceding claims, comprising a solar panel (3) extending above the upper structure.
7. Self-contained street lamp according to any one of the preceding claims, wherein the tank (7) includes a removable filter (11).