LED Light Fixture With Angled Heat Sink Fins
Solution Overview
Problem
Conventional LED light fixtures face challenges in heat dissipation and uniform illumination, leading to reduced light output, shorter lifespan, glare, and uneven lighting, particularly in applications like parking garages where heat sinks can stifle airflow and create obstructions.
Innovation Solution
An LED light fixture design featuring a housing with angled LED strips, a heat sink with angular fins for improved airflow, and an optical module with reflective and diffusing elements to redirect light, ensuring uniform illumination and reduced glare, while the heat sink's thermal pad conducts heat away from the LEDs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If conventional heat sinks with vertical fins are used, then heat dissipation structure is provided, but airflow is stifled and heat dissipation efficiency is reduced
Solution Approach 1:
The patent inverts the conventional vertical fin orientation to use horizontal fins that extend perpendicular to the LED strip. This inversion allows air to flow horizontally across the fins rather than being blocked by vertical structures, significantly improving airflow while maintaining effective heat dissipation surface area.
Solution Approach 2:
The patent transitions from a single-dimensional vertical fin arrangement to a two-dimensional horizontal fin configuration that extends across the width of the fixture. This dimensional change creates multiple airflow pathways and prevents air stagnation, enhancing both airflow and heat dissipation efficiency.
2Illumination intensity
If conventional light fixtures are used, then light output is provided, but uniform illumination is not achieved and glare is produced
Solution Approach 1:
The patent applies different optical properties to different regions of the light distribution system. The first optical component has a reflective surface that redirects light at specific angles, while the second optical component has a diffusing surface that scatters light. This local differentiation of optical qualities achieves uniform illumination across the target area while controlling glare in specific directions.
Solution Approach 2:
The patent segments the light distribution function into two separate optical components: a first optical component for light redirection and a second optical component for light diffusion. This segmentation allows each component to specialize in one optical function, improving overall light distribution uniformity and glare control compared to a single integrated optic.
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
The solution effectively dissipates heat, enhances light output and lifespan, and provides uniform illumination with reduced glare, directing light where needed most, thus improving the overall performance and efficiency of LED lighting fixtures.
Implementation Method 1
a heat sink to dissipate heat generated by the LED light sources
Implementation Method 2
this method and arrangement may stifle airflow, which is an important factor in dissipating heat
Implementation Method 3
a reflective portion which reflects a first portion of the light from the LED light source
Implementation Method 4
openings which allow a second portion of the emitted light from the LED light source to pass through
Implementation Method 5
The lens may include a prism which reflects and refracts the light from the LED light source
Implementation Method 6
The heat sink preferably includes a thermal pad which conducts heat away from the LED light source to heat dissipating fins
Data Source
AI summary
An LED light fixture and methods are provided in which the light from central portions of the LED light sources are reflected to illuminate areas on the periphery of an associated area, while less intense light from the sides of the LED light sources illuminate interior portions of the associated area to produce a uniform illumination, both horizontally and vertically, while minimizing direct glare from the light sources. The LED light fixture includes a heat sink having cooling fins on the periphery of the housing.