Linear LED Ring Light with Dual Deflection and Aluminum Heat Sink
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Solution Overview
Problem
Conventional luminaire designs for LED-based outdoor lighting, such as street lights, face challenges in achieving desired light distributions due to the nature of LEDs as multiple small point sources, requiring complex optical deflection means and limited design flexibility, especially when heat sinks are needed nearby.
Innovation Solution
The design incorporates a lighting component that can form a curved or polygonal shape with double light deflection, using individual optical devices assigned to LEDs and a continuous lateral reflection surface, allowing for flexible light field distribution and easy manufacturing, with options for adjustable optical devices and a thermally conductive solid aluminum body serving as a heat sink.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If conventional luminaire designs are used with LEDs, then energy consumption is reduced, but achieving desired light distribution becomes complex requiring multiple optical deflection means
Solution Approach 1:
The lighting component is divided into multiple channels with individual optical deflection means for each LED, allowing independent optimization of light distribution for each light source while maintaining overall system simplicity
Solution Approach 2:
The lighting component serves multiple functions: it provides structural support, acts as a heat sink, and incorporates optical deflection means to achieve desired light distribution, eliminating the need for separate complex optical systems
2Reliability
If LEDs are arranged in a depression in the lighting component, then protection is improved, but alignment of optical devices in all directions becomes limited
Solution Approach 1:
The optical deflection means are designed to be adjustable and repositionable, allowing them to be dynamically aligned in different directions depending on the desired light distribution pattern, even when LEDs are positioned in protective depressions
Solution Approach 2:
The lighting component acts as an intermediary structure that provides both protection for the LEDs in depressions and supports adjustable optical deflection means that can be positioned to achieve various light distribution patterns
3Temperature
If a heat sink is provided in the immediate vicinity of LEDs, then thermal management is improved, but design freedom is limited
Solution Approach 1:
The heat sink function is merged with the structural lighting component itself, which is made of thermally conductive material, eliminating the need for separate heat sink structures and thereby maintaining design freedom while achieving effective thermal management
4Adaptability or versatility
If the lighting component forms a curved or polygonal shape, then light distribution flexibility is improved, but manufacturing complexity increases
Solution Approach 1:
The curved or polygonal lighting component is divided into multiple straight sections or channels, each of which can be manufactured separately using standard techniques, and then assembled to form the desired curved or polygonal configuration, maintaining ease of manufacture while achieving light distribution flexibility
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 approach enables efficient and flexible light distribution in various outdoor settings, such as sidewalks and streets, with high design freedom and ease of manufacturing, while effectively managing heat through a solid aluminum construction.
Implementation Method 1
the first deflection takes place through the optical devices individually assigned to the LEDs. The second deflection takes place on the lateral reflection surface
Implementation Method 2
Other concepts provide optical devices such as light-refracting elements or reflectors on LEDs
Implementation Method 3
a thermally conductive solid aluminum body serving as a heat sink
Data Source
Figure 1~2
Figure 3a~3b
Figure 3c~4c
AI summary
The lamp has a channel whose outwardly open side forms a light-emitting surface. LEDs are arranged along a linear form extension of a light component at a side of the channel on an LED support surface i.e. printed circuit board, where the side of the channel is fixed opposite to the light-emitting surface. Each LED includes a shell shaped optical device i.e. reflectors (30, 38), for light deflection in main radiation direction of each LED. A lateral reflecting surface (32b) is provided between the light-emitting surface and the support surface at side of the channel in an area. The LEDs are high power LEDs.