LED Filament with Dual-Surface UV and Visible Diodes
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Solution Overview
Problem
Existing LED-based lighting solutions lack both aesthetic appeal and effective disinfection capabilities, particularly in environments where pathogenic microorganisms are a concern.
Innovation Solution
A flexible LED filament with an elongated carrier, featuring a combination of visible LEDs for aesthetic appeal and UV LEDs for disinfection, arranged in a spiral or helical shape to resemble an incandescent bulb.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If UV light is used for disinfection, then pathogen inactivation is effective, but the lighting solution lacks aesthetic appeal and decorative value
Solution Approach 1:
The patent combines UV LEDs and visible LEDs into a single filament structure, allowing the filament to simultaneously provide disinfection functionality and aesthetic lighting appearance. The UV LEDs are integrated within the same carrier as visible LEDs, enabling both functions to coexist in one device.
Solution Approach 2:
The filament is designed to perform multiple functions: it serves as both a disinfection device (through UV radiation) and a decorative lighting element (through visible light emission). This multi-functionality resolves the contradiction by making the device useful for both purposes simultaneously.
2Object-affected harmful factors
If violet light is used for disinfection without evacuating people, then safety is improved, but disinfection effectiveness decreases and requires hours to achieve adequate disinfection
Solution Approach 1:
The patent changes the wavelength parameter by incorporating UV LEDs that emit at 280-315 nm (UV-B range), which provides more effective pathogen inactivation compared to violet light at 405 nm. This parameter change enables faster disinfection results while maintaining safety through controlled UV emission.
3Reliability
If UV-C radiation is used for disinfection, then pathogen inactivation is highly effective, but the room must be evacuated of people creating operational complexity
Solution Approach 1:
The patent applies different qualities to different parts of the filament: UV LEDs are positioned to emit disinfection radiation, while visible LEDs provide aesthetic appearance. The carrier structure is designed to manage UV emission directions, allowing effective disinfection in specific areas while maintaining safety through controlled UV distribution.
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 LED filament provides both aesthetically pleasing visible light and effective disinfection, achieving pathogen inactivation while maintaining a safe and attractive lighting solution.
Implementation Method 1
UV LEDs for disinfection... UV light for disinfecting air and objects... UV-B (ultra-violet light of 280-315 nanometer (nm)) and UV-C (ultra-violet light of 100-280 nm) radiation for disinfection purposes
Implementation Method 2
a plurality of first light-emitting diodes, LEDs, distributed along the first surface of the elongated carrier. The plurality of first LEDs is configured to emit a first LED light
Data Source
AI summary
The present invention relates to a light-emitting diode (LED) filament (1) configured to provide LED filament light and comprising an elongated carrier (2) comprising a first surface (3) and a second surface (3′) arranged opposite to the first surface (3). The LED filament (1) further comprises a plurality of first light-emitting diodes (4). LEDs, distributed along the first surface (3) of the elongated carrier (2), the plurality of first LEDs (4) being configured to emit a first LED light having a dominant peak wavelength within a first wavelength range, and a plurality of second light-emitting diodes (5), LEDs, distributed along the second surface (3′) of the elongated carrier (2), the plurality of second LEDs (5) being configured to emit a second LED light having a dominant peak wavelength within a second wavelength range being different from the first wavelength range. The first wavelength range is in the visible wavelength range and the second wavelength range is in the UV wavelength range and/or violet wavelength range.