Finned Ring Lamp Body for LED Heat Dissipation
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Solution Overview
Problem
Current LED lighting devices for outdoor and large covered areas face inefficiencies in heat dissipation, particularly when multiple LEDs are used, leading to rapid deterioration and reduced service life due to inadequate cooling, where air struggles to reach the center of dissipator elements, resulting in heterogeneous and inefficient cooling effects.
Innovation Solution
The design incorporates a finned ring lamp body with a toroidal structure, featuring a flat ring base with projecting fins for uniform heat conduction and convection, along with a central cavity allowing air to flow from both sides, and an integrated power supply unit with sensors and a solar screen for enhanced thermal management and protection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If conventional dissipator elements are used in LED lighting devices, then the heat dissipation surface area is increased, but the cooling air cannot reach the centre of the dissipator resulting in heterogeneous and inefficient cooling
Solution Approach 1:
The dissipator is divided into multiple radial fins that segment the heat dissipation surface, allowing cooling air to access different zones simultaneously. This segmentation enables homogeneous cooling across the entire dissipator surface including the centre region, resolving the issue of inefficient cooling in conventional single-block dissipators.
Solution Approach 2:
The dissipator transitions from a conventional planar or simple three-dimensional structure to a radial fin structure that extends in multiple dimensions from the centre. This dimensional transformation allows cooling air to flow through and reach the centre region effectively, achieving homogeneous cooling across the entire heat dissipation surface.
2Use of energy by moving object
If high power LEDs are used to increase light efficiency, then the light output is improved, but the heat generation increases requiring more effective dissipation
Solution Approach 1:
The dissipator design converts the harmful heat energy generated by high power LEDs into a beneficial cooling effect. By providing an optimized radial fin structure with enhanced surface area and improved air flow pathways, the system efficiently transforms waste heat into controlled thermal dissipation, maintaining the benefits of high power LEDs while mitigating their heat generation drawback.
3Use of energy by moving object
If the junction temperature of LED devices exceeds a predetermined limit value, then the light efficiency is maintained, but the LED devices deteriorate rapidly reducing service life
Solution Approach 1:
The dissipator design provides passive thermal feedback control through its radial fin structure. As heat accumulates in the LED junction, the temperature gradient naturally drives cooling air flow through the fins, increasing heat removal efficiency as temperature rises. This self-regulating mechanism prevents junction temperature from exceeding critical thresholds, thereby extending LED service life while maintaining light efficiency.
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 achieves improved heat dissipation performance, ensuring a homogeneous and efficient cooling effect, thereby extending the service life and reducing maintenance costs of the LED lighting devices.
Implementation Method 1
a finned ring lamp body (13) to which the plurality of LED light sources (11) is constrained underneath
Implementation Method 2
projecting upwards a plurality of fins (13b)... ensuring a homogeneous and efficient cooling effect
Data Source
Figure 1
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Figure 4~5
AI summary
The present invention refers to an LED lighting device for use outdoors and in large covered areas, in the public and private sectors, which comprises a plurality of LED light sources (11) constrained to a lamp body (13), said lamp body (13) has a finned ring shape, at least one substantially flat optical element (12) being constrained at the bottom to the finned ring lamp body (13), the finned ring lamp body (13) and the optical element (12) defining a first chamber (11a) for housing the plurality of LED light sources (11) and circuitry for managing them (11).