Bidirectional LED Lens for Double-Sided Lighting
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Solution Overview
Problem
Conventional LED lighting configurations for double-sided signs require multiple LEDs and complex setups due to unidirectional light emission, increasing manufacturing costs and complexity.
Innovation Solution
An LED lens with a light diffusion agent, featuring a light receiving portion, a first light transmitting portion for upward light emission, a reflective portion, and a second light transmitting portion for downward light emission, allowing for bi-directional light distribution using a reduced number of LEDs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If conventional unidirectional LEDs are used for double-sided lighting, then light emission in one direction is achieved, but the number of LEDs and configuration complexity increase
Solution Approach 1:
The patent merges the functions of multiple unidirectional LEDs into a single bidirectional LED that can emit light in both upward and downward directions simultaneously. This consolidation reduces the total number of LEDs required for double-sided lighting applications and simplifies the overall configuration while maintaining effective illumination on both sides.
Solution Approach 2:
The bidirectional LED structure provides multi-functionality by serving as both an upward-facing and downward-facing light source from a single component. This universal design allows one LED to replace what would traditionally require two separate unidirectional LEDs, reducing manufacturing complexity and cost.
2Illumination intensity
If multiple LEDs are disposed on both sides of circuit board for double-sided lighting, then light emission on both surfaces is achieved, but the amount of LEDs and configuration complexity increase
Solution Approach 1:
The invention combines multiple LED functions into a single bidirectional LED component that provides illumination in both upward and downward directions. This merging approach maintains the required double-sided illumination intensity while significantly reducing the total quantity of LEDs needed compared to using separate unidirectional LEDs on each side of the circuit board.
3Ease of operation
If conventional LED configuration is used for double-sided signs, then light emission on one surface is achieved, but additional LEDs and diffusion plates are required on both sides
Solution Approach 1:
The bidirectional LED integrates the functionality of multiple separate components into a single unit, eliminating the need for additional diffusion plates and multiple LED assemblies on both sides of the circuit board. This consolidation directly improves assembly efficiency by reducing the number of components that need to be installed and positioned.
Solution Approach 2:
The invention extracts and eliminates the need for separate diffusion plates and additional LED assemblies by incorporating their light-distributing functions directly into the bidirectional LED structure itself, thereby simplifying the overall assembly process.
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
The solution enables efficient bi-directional light emission with a reduced number of LEDs, lowering manufacturing costs and improving assembly efficiency and productivity.
Implementation Method 1
a light diffusion agent diffused therein
Implementation Method 2
a reflective portion extended from the first light transmitting portion and reflecting a portion of the light
Data Source
AI summary
There is provided a light emitting diode (LED) lens for double-sided lighting, including a light diffusion agent diffused therein, the LED lens including a light receiving portion receiving light, a first light transmitting portion corresponding to the light receiving portion and transmitting a portion of the light in an upward direction therefrom, a reflective portion extended from the first light transmitting portion and reflecting a portion of the light, and a second light transmitting portion facing the first light transmitting portion and transmitting the light reflected by the reflective portion in a downward direction therefrom.