Active Ventilation LED Lighting Heat Dissipation
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Solution Overview
Problem
High-power LED lighting devices face challenges in heat dissipation, as traditional solutions like finned heat sinks are difficult to implement effectively, leading to inefficient heat removal and potential performance degradation.
Innovation Solution
Incorporating small-sized active ventilation components, such as fans or blowers, mounted directly on the support board near the LED sources to create a ventilation flow that transfers heat away from the LED array to the casing and external environment, either alone or in conjunction with traditional heat dissipation mechanisms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If traditional finned heat sinks are used for heat dissipation, then heat removal capability is improved, but device complexity and implementation difficulty increase
Solution Approach 1:
The patent introduces an active ventilation system using a fan to create forced air flow for heat dissipation. The fan is mounted on the support board and directs air flow across the LED array and heat-generating components, utilizing pneumatic principles to enhance convective heat transfer without requiring complex finned heat sink structures.
Solution Approach 2:
The ventilation system is integrated directly into the support board structure, with the fan mounted on the same board that carries the LED drivers and other electronic components. This self-contained approach eliminates the need for separate external heat sinks and complex mounting arrangements, simplifying the overall device structure.
2Temperature
If active ventilation components are added to improve heat dissipation, then temperature control is improved, but device complexity increases
Solution Approach 1:
The fan is mounted directly on the support board alongside the LED drivers and other electronic components, merging the ventilation function with the existing structural platform. This integration approach consolidates multiple functions into a single structural element, reducing overall device complexity despite adding active cooling capability.
Solution Approach 2:
The support board serves multiple functions: it provides mechanical support for the LED array, houses electronic drivers, and now also mounts the ventilation fan. This multi-functional design eliminates the need for separate dedicated cooling structures, reducing overall device complexity.
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
This approach enhances heat dissipation by preventing heat layer formation and improving thermal energy transfer to the outside, particularly in environments where convective action is poor, thereby maintaining device performance and efficiency.
Implementation Method 1
Incorporating small-sized active ventilation components, such as fans or blowers, mounted directly on the support board near the LED sources to create a ventilation flow that transfers heat away from the LED array to the casing and external environment
Data Source
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AI summary
A lighting device (10) includes: - a support board (14), - one or more electrically-powered light radiation sources (16), e.g. LED sources, arranged on said support board (14), and - one or more aeriform pumping sources (22) active on said support board (14) in the vicinity of said light radiation source(s) (16).