Omnidirectional LED Lighting Device with Ventilation Channel Heat Dissipation
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Solution Overview
Problem
Existing lighting devices with omnidirectional LED light emission struggle with efficient heat dissipation, particularly when held upright, as air flow is restricted to horizontal directions, limiting heat dissipation capability.
Innovation Solution
The lighting device features circumferentially arranged heat sinks with a supporting unit and ventilation channels, including polar and lateral openings, allowing direct air flow and multiple directional airflow for enhanced heat dissipation, and optionally incorporates nanostructure layers or fins to promote heat transfer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If LED lamps are used for omnidirectional light emission, then illumination efficiency is improved, but heat dissipation capability deteriorates
Solution Approach 1:
The lighting device is divided into multiple independent lighting modules, each with its own heat sink. This segmentation allows heat to be dissipated from multiple localized points simultaneously, improving overall heat dissipation capability while maintaining high-power LED illumination efficiency.
Solution Approach 2:
The heat sink extends in multiple spatial dimensions with fins protruding from both sides, creating a three-dimensional heat dissipation structure. This dimensional expansion increases the heat dissipation surface area significantly, enabling effective heat removal from high-power LEDs while maintaining compact form factor.
2Illumination intensity
If heat dissipating bodies are arranged circumferentially for omnidirectional light, then light emission is improved, but heat dissipation path is restricted
Solution Approach 1:
The circumferential arrangement is segmented into multiple discrete heat dissipating bodies, each with independent fin structures. This segmentation creates multiple parallel heat dissipation pathways around the circumference, maintaining omnidirectional light emission while providing redundant heat dissipation routes that prevent thermal bottlenecking.
Solution Approach 2:
The heat dissipating bodies are arranged in a circumferential pattern forming a near-spherical configuration around the light source. This curved arrangement allows heat to dissipate radially in all directions while the fin structures extend perpendicular to the circumferential direction, creating three-dimensional heat dissipation pathways that maintain both omnidirectional illumination and effective thermal management.
3Temperature
If air ventilation channels are provided for heat dissipation, then heat dissipation capability is improved, but structural complexity increases
Solution Approach 1:
The heat dissipation function is merged with the structural support function. The heat dissipating bodies serve dual purposes: they provide mechanical support for the LED modules and simultaneously act as heat sinks with integrated fins. This merging eliminates the need for separate ventilation channels and heat dissipation structures, reducing overall device complexity while maintaining effective heat dissipation.
Solution Approach 2:
The heat dissipating bodies are designed as multi-functional components that simultaneously provide mechanical support, thermal management, and structural integrity. The fins on the heat dissipating bodies serve both as structural reinforcement and as heat transfer surfaces, eliminating the need for dedicated ventilation channels and reducing the overall number of components required in the lighting device.
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 configuration enables efficient heat dissipation by allowing unobstructed air flow and improved heat transfer, effectively addressing the limitations of previous designs and maintaining omnidirectional light emission.
Implementation Method 1
The heat sink has a light-producing side and a heat-dissipating side opposite thereto. The light-producing side comprises one or more light-emitting elements mounted to the heat sink for producing light. The heat-dissipating side is configured to dissipate heat produced by the one or more light-emitting elements.
Implementation Method 2
The ventilation channel is used for enabling air flowing therethrough to carry away at least a portion of heat obtained from the heat-dissipating sides of the heat sinks of the lighting modules to outside said space.
Implementation Method 3
The presence of the line-of-sight path allows a direct flow of air that advances through the ventilation channel from the first polar opening to the second polar opening, or vice versa, to be realizable, thereby promoting the carrying away of the at least a portion of heat to outside said space.
Data Source
AI summary
This invention discloses a lighting device for omnidirectional light emission with efficient heat dissipation. In one embodiment, a lighting device comprises lighting modules circumferentially arranged such that generation of the omnidirectional light is allowable, and a supporting unit attached to each lighting module's heat-dissipating side for providing mechanical support. A space formed by minimally enclosing all the lighting modules includes a first polar opening, a second polar opening opposite thereto, and a ventilation channel between the two polar openings for enabling air flowing through the ventilation channel to carry away at least part of heat obtained from the heat-dissipating sides of the lighting modules to outside said space. A line-of-sight path between the two polar openings is identifiable, allowing a direct flow of air that advances through the ventilation channel between the two polar openings to be realizable, thereby promoting the carrying away of heat to outside said space.