Vehicle Warning Light Assembly Thermal Management via Extraction
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Solution Overview
Problem
Warning light assemblies for motor vehicles face challenges in managing heat generation and providing a weather-resistant seal while maintaining efficient light output and durability, especially when exposed to environmental conditions that can corrode components and damage electronic parts.
Innovation Solution
A thermally conductive base with longitudinally extending ribs and light-transmissive domes, combined with modular mounting assemblies and brackets, allows for efficient heat dissipation and a secure weather-resistant enclosure, reducing part count and assembly complexity while offering flexibility in light head placement and configuration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If warning lights produce very bright light with specific color and emission patterns as required by safety regulations, then illumination intensity is improved, but heat generation increases causing damage to electronic components
Solution Approach 1:
The patent extracts the heat-generating electronic components from the sealed housing and mounts them on the external base structure. This separates the light-generating function from the heat-source function, allowing the housing to be weather-sealed without trapping heat inside, thus resolving the contradiction between bright light output and heat management
Solution Approach 2:
The base acts as an intermediary thermal management structure between the electronic components and the external environment. It provides thermal pathways to conduct heat away from components while the sealed housing provides weather protection, mediating between the need for bright light and heat dissipation requirements
2Reliability
If warning light assemblies provide a strong weather-resistant seal to protect against corrosion and moisture, then reliability is improved, but heat dissipation capability deteriorates
Solution Approach 1:
The patent extracts the electronic components from the sealed housing and mounts them on the external base structure. This separates the light-generating function from the heat-source function, allowing the housing to be weather-sealed without trapping heat inside, thus resolving the contradiction between bright light output and heat management
Solution Approach 2:
The warning light assembly is segmented into two distinct zones: a sealed housing containing only light-transmissive elements for weather protection, and an external base mounting structure containing heat-generating electronics with access to thermal pathways. This segmentation allows each zone to be optimized for its specific function without compromising the other
3Ease of operation
If warning light assemblies adopt compact, low profile, self-contained designs, then ease of operation is improved, but device complexity increases to simultaneously achieve weather sealing and heat dissipation
Solution Approach 1:
The patent extracts the electronic components from the sealed housing and mounts them on the external base structure. This separates the light-generating function from the heat-source function, allowing the housing to be weather-sealed without trapping heat inside, thus resolving the contradiction between bright light output and heat management
Solution Approach 2:
The base structure serves multiple functions simultaneously: it provides mechanical mounting support for the housing, acts as a thermal management pathway for heat dissipation, and offers structural attachment points for weather-sealed components. This multi-functionality reduces overall assembly complexity while achieving compact design
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 manages heat and protects against environmental elements, enhancing the durability and flexibility of warning light assemblies while maintaining bright light output and reducing the risk of damage from temperature and corrosion.
Implementation Method 1
a thermally conductive base with longitudinally extending ribs
Implementation Method 2
at least one light-transmissive dome secured to the base
Data Source
AI summary
A warning light for attachment to a vehicle comprising a thermally conductive longitudinally extending base, a plurality of light head mount assemblies, a plurality of LED warning light assemblies, and a plurality of electronic control circuits. Said base has a pair of generally parallel longitudinal edges and a pair of ribs projecting perpendicularly from said base. Said light head mount assemblies comprise a bracket and a light head retention shoe. Said bracket has a generally planar bracket first portion and a generally planar bracket second portion oriented perpendicular to said first portion. Said light head shoe has a sole configured to engage said bracket first portion, a rib engaging portion, and a brace extending angularly therebetween. Said LED assemblies are mounted on said bracket second portion. Said dome has a main body portion, sidewalls configured to engage said edges, and end walls.