Linear Lighting Device Thermal Management
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Solution Overview
Problem
Traditional lighting devices with LEDs face challenges in thermal management, as the lifetime of LEDs is inversely related to their operating junction temperature, and existing designs often lack effective heat dissipation and maintenance accessibility.
Innovation Solution
The lighting device incorporates a thermally conductive body and cover with a pivotable design, featuring extruded thermally conductive materials and heat sinks to manage heat dissipation and facilitate maintenance by allowing access to internal components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If high-powered LEDs are used to provide desired brightness, then illumination intensity is improved, but junction temperature increases and lifetime decreases
Solution Approach 1:
The patent converts the harmful heat generated by high-powered LEDs into a beneficial thermal management solution by integrating heat sinks and thermally conductive structures that efficiently dissipate heat away from the LED junctions, thereby maintaining low operating temperatures while preserving high brightness output
Solution Approach 2:
The patent merges the housing, heat sinks, and thermal management structures into a unified integrated assembly that simultaneously provides structural support, heat dissipation, and protection for the LED components, resolving the contradiction between brightness and lifetime
2Reliability
If the lighting device encloses all components within a housing, then protection is improved, but maintenance accessibility deteriorates
Solution Approach 1:
The patent segments the lighting device into modular components including removable housings, accessible covers, and separable assemblies that allow maintenance personnel to access internal components such as LEDs and driver electronics without dismantling the entire fixture, thereby maintaining protection while improving maintenance accessibility
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 design effectively manages heat generated by LEDs and driver electronics, enhancing the lifespan of the lighting device while providing easy access for maintenance and repair.
Implementation Method 1
Such a lighting device typically incorporates structures to transport heat from the LED junction and the driver electronics to the environment outside the lighting device
Data Source
AI summary
A linear lighting device includes a body, a light source holder, and a light source. The body has a top portion, a bottom portion, and a rear portion. The light source holder has a holding member and an attachment member. The attachment member of the light source holder is secured to the rear portion of the body. Further, the light source is disposed on the holding member of the light source holder. A lighting device also includes a cover. The cover has a first end and a second end, and is movable between an open position and a closed position. The first end of the cover is pivotably secured to the bottom portion of the body and the second end of the cover is adapted to be fixedly secured to the top portion of the body.