Solar Street Light Ventilation Assembly for LED and Panel Cooling
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Solution Overview
Problem
Existing street lights using LEDs face issues with heat dissipation, reduced solar panel power generation due to high temperatures, battery overheating, and LED lifespan shortening, along with contamination from foreign substances and birds, without effective cooling and ventilation solutions.
Innovation Solution
A solar cell street lights assembly utilizing a natural airflow path through a vertical pillar, mounting rod, and air conduits to cool PCB, solar panel, and battery, with a wind-powered fan for auxiliary charging and bird deterrence, and natural ventilation for foreign substance removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If forced cooling method using cooling water is used to cool LED chips, then cooling effectiveness is improved, but device complexity and installation cost increase
Solution Approach 1:
The patent replaces the forced cooling mechanical system (water pumps, cooling channels, flow control devices) with a natural convection system. The housing structure itself serves as the cooling mechanism, with air inlet holes at the bottom and outlet holes at the top allowing natural air circulation to cool the LED module without any moving parts or external cooling devices.
Solution Approach 2:
The housing structure performs self-cooling by utilizing natural convection currents. The design allows air to automatically flow through the housing from bottom to top, absorbing heat from the LED module and PCB without requiring external energy input or control systems. The structure serves both as enclosure and as the cooling system.
2Illumination intensity
If multiple LEDs are connected in series or parallel to form modules for high brightness, then illumination intensity is improved, but heat generation increases
Solution Approach 1:
The patent combines the LED module, driver circuit board, and housing into an integrated assembly where the housing itself serves as the heat dissipation structure. The air cooling channels are merged with the housing walls, eliminating the need for separate cooling components and providing direct thermal management for the high-power LED assembly.
Solution Approach 2:
The patent transitions from point-contact or surface-cooling methods to volumetric cooling by creating three-dimensional air flow paths throughout the housing. Multiple air inlet holes distributed at the bottom and multiple outlet holes at the top create distributed thermal management across the entire LED module volume, effectively cooling all heat-generating components simultaneously.
3Temperature
If aluminum body is used for heat dissipation, then thermal conductivity is improved, but economic efficiency decreases
Solution Approach 1:
The patent changes the thermal management approach from relying on high thermal conductivity materials (aluminum) to relying on convective heat transfer parameters. By optimizing air flow paths, inlet/outlet hole distributions, and internal air channel geometries, the system achieves effective cooling using standard plastic or composite housing materials, eliminating the need for expensive aluminum construction.
4Use of energy by moving object
If solar panels are exposed to direct sunlight for power generation, then energy production is improved, but overheating reduces power generation efficiency
Solution Approach 1:
The patent segments the housing into distinct functional zones: a solar panel receiving area with direct sunlight exposure for power generation, and a LED lighting area with integrated air cooling channels. The air flow path is segmented to specifically target the solar panel cooling while maintaining optimal lighting functionality, allowing simultaneous power generation and thermal management.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Effectively cools components to prevent power reduction, maintains battery efficiency, extends LED lifespan, and prevents contamination, enhancing overall performance and reliability.
Implementation Method 1
utilizing a natural airflow path through a vertical pillar and wind-powered fan to cool PCB, LED module, and battery
Implementation Method 2
wind-powered fan to cool PCB, LED module, and battery, with features like air conduits, heat dissipation plates, and wind-powered generation
Implementation Method 3
heat dissipation plates
Data Source
AI summary
A solar cell street lights assembly includes: a vertical pillar fixed to a ground; a hollow mounting rod obliquely connected upward from an upper end portion of the vertical pillar; a lower housing having a first receiving portion; a mounting hole for mounting a LED module formed on the other side; an upper housing mounted on an upper surface portion of the lower housing to form an internal space (A) together with the lower housing and having one end connected to the mounting rod, an outlet for discharging air introduced through the hollow portions, and a solar panel mounted and fixed on an upper surface thereof; a hollow air conduit for introducing external air from a lower portion thereof arranged parallel to the vertical pillar; and at least one air passage pipe having one end connected to the air conduit and passing through the second receiving portion.