Dual-Sided UV-Violet LED Filament for Disinfection Lighting
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Solution Overview
Problem
Existing LED filament arrangements face challenges in combining energy efficiency, light distribution, aesthetics, and disinfection capabilities while addressing operational complexity and safety issues, particularly in replacing conventional UV tubes with UV LED-based solutions.
Innovation Solution
A LED filament design featuring dual linear arrays of LEDs on opposite surfaces, one emitting UV light and the other emitting violet light, with a controller for individual control, encapsulants for light scattering and reflection, and a tubular housing for convenient installation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of stationary object
If UV LED-based solutions are used to replace conventional UV tubes, then energy efficiency and operational life are improved, but device complexity and operational issues regarding efficiency characteristics and safety increase
Solution Approach 1:
The LED filament is segmented into two distinct linear arrays: a first linear array of UV LEDs and a second linear array of violet LEDs. This segmentation allows independent optimization of each array for its specific function, reducing overall system complexity while maintaining high operational life through specialized component selection for each wavelength range
Solution Approach 2:
The patent introduces a controller as an intermediary device that manages the operation of both LED arrays. The controller coordinates the UV and violet LED emission, regulates power distribution, and implements safety features, thereby reducing operational complexity despite having multiple LED types with different characteristics
2Use of energy by moving object
If UV LED-based solutions are used to replace conventional UV tubes, then energy efficiency is improved, but operational issues regarding efficiency characteristics and safety increase
Solution Approach 1:
The patent merges UV LED functionality with violet LED functionality into a single integrated filament structure. The first linear array of UV LEDs and the second linear array of violet LEDs are combined on the same filament carrier, allowing simultaneous disinfection and visible light emission while sharing common mounting and electrical infrastructure, thereby improving energy efficiency without proportionally increasing safety risks
Solution Approach 2:
The patent utilizes the visible violet light emission (380-420 nm) from the second linear array as a safety indicator. The violet light provides visible confirmation that the LED filament is operating and emitting UV radiation, allowing users to monitor operational status and adjust behavior accordingly, thereby addressing safety concerns while maintaining energy efficiency
3Use of energy by stationary object
If LED filaments are used for illumination purposes, then energy efficiency and light distribution are improved, but the ability to provide disinfection lighting is reduced
Solution Approach 1:
The LED filament is designed with multi-functionality to simultaneously provide illumination and disinfection. The first linear array of UV LEDs (100-380 nm) enables disinfection functionality, while the second linear array of violet LEDs (380-420 nm) provides visible light emission. Both arrays share the same energy-efficient LED technology platform, achieving universal application in both lighting and disinfection purposes without sacrificing energy 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
The design provides efficient, safe, and aesthetically pleasing disinfection lighting with improved UV and violet light distribution, reduced complexity, and enhanced operational lifespan, while indicating UV emission through violet light, facilitating easy recycling.
Implementation Method 1
a first linear array of a plurality of first light emitting diodes, LEDs, arranged on the first surface, wherein the plurality of first LEDs is arranged to emit ultra-violet, UV, light with a first centroid wavelength, λC1, in a wavelength range of 100-380 nm
Implementation Method 2
a second linear array of a plurality of second LEDs, arranged on the second surface, wherein the plurality of second LEDs is arranged to emit violet light with a second centroid wavelength, λC2, in a wavelength range of 380-420 nm
Implementation Method 3
a controller for individual control, encapsulants for light scattering and reflection
Implementation Method 4
encapsulants for light scattering and reflection
Data Source
AI summary
There is provided a light emitting diode, LED, filament, configured to emit LED filament light (105). The LED filament comprises an elongated carrier (110) extending in a first direction, A, comprising a first surface (112) and a second surface (114) oppositely arranged the first surface. The LED filament further comprises a first linear array (120) of a plurality of first light emitting diodes, LEDs, arranged on the first surface, wherein the plurality of first LEDs is arranged to emit ultra-violet, UV, light (121) with a first centroid wavelength, Xc1, in a wavelength range of 100-380 nm. The LED filament further comprises a second linear array (130) of a plurality of second LEDs, arranged on the second surface, wherein the plurality of second LEDs is arranged to emit violet light (131) with a second centroid wavelength, Xc2, in a wavelength range of 380-420 nm.