LED Lighting Device Columnar Support Heat Dissipation
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Solution Overview
Problem
Conventional LED lighting devices face challenges in achieving a wide light distribution angle and high total flux while maintaining transparency, as they often suffer from heat management issues that affect the LED element and circuit performance, and opaque components can block light and hinder heat transfer.
Innovation Solution
The design incorporates a globe with a hollow interior, a heat-conductive base, a columnar support with a radiation layer, and a light guide member to enhance heat dissipation and light distribution, allowing for a higher-output LED and improved radiation performance, which increases the light distribution angle and total flux while maintaining transparency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If a higher-output LED is used to increase total flux, then the luminous output is improved, but the heating value of the LED becomes greater and deteriorates the LED element and circuit board
Solution Approach 1:
The patent extracts the heat dissipation function from the base and creates a dedicated columnar support structure with radiation layers. This separate heat management component allows the base to focus on electrical support while the columnar support handles thermal management, enabling higher-output LEDs without circuit board overheating
Solution Approach 2:
The columnar support structure serves multiple functions: it provides mechanical support for the base, conducts heat away from the LED, and features radiation layers for efficient heat dissipation. This multi-functional design addresses both structural and thermal management requirements simultaneously
2Temperature
If the area of the heat releasing surface of the base is increased to improve radiation performance, then the heat dissipation is improved, but the structure becomes more complex and the transparency is reduced
Solution Approach 1:
The patent segments the heat dissipation function from the base structure and implements it in a separate columnar support. This segmentation allows the base to remain simple and transparent while the dedicated heat dissipation structure provides enhanced radiation performance through its radiation layers
3Ease of manufacture
If the proportion of the surface of the globe to the outer surface is increased to increase transparency, then the transparency is improved, but the area of the heat releasing surface is reduced
Solution Approach 1:
The patent extends the heat releasing surface into a third dimension by creating a columnar support structure that protrudes into the globe. This vertical extension provides additional heat dissipation area without increasing the horizontal footprint, thus maintaining globe transparency while improving heat release capability
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 efficiently cools the LED, increases the light distribution angle, and enhances luminous efficiency by effectively dissipating heat and reducing opaque surface areas within the globe, resulting in a more efficient and transparent lighting solution.
Implementation Method 1
a radiation layer configured to radiate heat, the radiation layer being provided on a surface of the columnar support
Implementation Method 2
a light guide member configured to cover a light-emitting surface of the light source, the light guide member having optical transparency
Implementation Method 3
heat from the LED is transferred to the base, and is then released to the outside from the other surface (heat releasing surface) of the base
Data Source
Figure 1(a)~1(b)
Figure 2
Figure 3
AI summary
A lighting device that can improve its light output ratio and heat release properties is to be provided. A lighting device according to an embodiment includes: a globe having an opening at one end and a hollow inside; a base housed in the globe; a light source including at least one LED provided on the base, the light source being housed in the globe; a light guide member configured to cover a light-emitting surface of the light source, the light guide member having optical transparency, the light guide member being housed in the globe; a columnar support configured to support the base, the columnar support being housed in the globe and being located on the opposite side from the light source and the light guide member; a radiation layer configured to radiate heat, the radiation layer being provided on a surface of the columnar support; a globe connector connected to the columnar support at the one end of the globe; a cap connector connected to the globe connector; a bayonet cap configured to supply electrical power to the light source, the bayonet cap being connected to the cap connector; and a wiring line configured to electrically connect the bayonet cap and the light source.