Area Light With Battery Receptacle And Heat Sink
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Solution Overview
Problem
Conventional area lights and kick lights struggle to provide efficient and versatile illumination for hard-to-reach areas, often requiring user handling and lacking in intensity and color rendering quality.
Innovation Solution
A DC-powered LED-based area light with a rechargeable power tool battery pack, a U-shaped heat sink for thermal management, and a reflector system that enhances light intensity and color rendering, allowing for adjustable positioning and orientation using multiple surfaces and attachments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If conventional area lights are used to illuminate hard-to-reach areas, then illumination is provided, but the light intensity and color rendering quality are insufficient
Solution Approach 1:
The patent changes the light source parameters by using LED technology with specific color temperatures (5000K-10000K) and high CRI (≥80) LEDs, along with a high-voltage battery pack (≥18V), to achieve both high intensity and excellent color rendering that surpass conventional lights
Solution Approach 2:
The patent employs composite construction by combining multiple high-performance components: high-voltage battery pack, LED light source array, reflector system, and heat sink with fins, creating a composite lighting system that achieves superior performance beyond individual components
2Adaptability or versatility
If conventional area lights are positioned without user handling, then they can illuminate work areas, but they lack versatility in positioning and orientation
Solution Approach 1:
The housing is segmented into multiple portions with different功能的 surfaces: first end portion with first positioning surfaces, second end portion with second positioning surfaces, and side surfaces, allowing the light to be positioned in various orientations on different surface types without requiring user handling
Solution Approach 2:
The positioning surfaces are designed to be universally engageable with various base surfaces (flat, inclined, vertical), making the device multi-functional in terms of positioning capability while eliminating the need for user handling
3Illumination intensity
If LED light source is used with high voltage battery, then high intensity illumination is achieved, but thermal management becomes critical
Solution Approach 1:
The patent converts the harmful heat generated by high-power LEDs into a manageable thermal flow by designing a heat sink that captures heat at the LED junction and channels it through thermally conductive paths to fins, where it is dissipated to the environment, turning a potential failure mode into a controlled thermal management system
Solution Approach 2:
The heat sink acts as an intermediary between the LED light source and the environment, providing a thermal conduction path that mediates heat transfer from the high-temperature LED junction to the lower-temperature ambient air through its fins
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 provides high-intensity illumination (at least 1200 Lux) with a color rendering index of at least 80, enabling effective and versatile lighting in various orientations, surpassing the performance of traditional halogen lights while maintaining reliability and ease of use.
Implementation Method 1
a generally U-shaped heat sink located within the housing and thermally coupled with the light source
Implementation Method 2
a reflector system that enhances light intensity and color rendering
Data Source
AI summary
A work light includes a housing including a first end portion, a second end portion opposite the first end portion, and a center portion extending between the first end portion and the second end portion. A battery receptacle is located on the housing and is configured to receive a power tool battery pack having a voltage of at least 18 volts. An LED light source is supported by the housing and is powered by the power tool battery pack and a reflector is positioned adjacent the LED light source and arranged to cooperate with the LED light source to produce light having an intensity at a distance of one meter that is at least 1200 Lux.