Lighting Dissipation Device with Violet LED Disinfection
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Solution Overview
Problem
Current disinfection methods, such as chemical cleaners and UV light systems, are either intermittent or pose health risks, and UV light can cause material degradation, while existing lighting systems do not effectively address microbial inactivation in residential and commercial spaces.
Innovation Solution
A light emitting system that combines disinfection and exhaust functions, using LEDs emitting at least 20% of their spectral energy in the 380-420 nm wavelength range to inactivate microorganisms, with a fan for airflow and a controller to adjust temperature-dependent airflow characteristics, providing both disinfection and thermal dissipation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If UV light is used for disinfection, then microbial inactivation is achieved, but material degradation occurs and health risks arise
Solution Approach 1:
The patent changes the wavelength parameter of light from traditional UV-C (200-280nm) to violet light (380-420nm), which maintains microbial inactivation capability while eliminating material degradation and health risks associated with UV exposure
Solution Approach 2:
The patent uses LEDs as light sources, which are more stable and longer-lasting than traditional UV lamps, eliminating the need for frequent replacement and maintenance
2Productivity
If light emitter operates at high power for disinfection, then microbial inactivation effectiveness increases, but temperature increases causing safety issues
Solution Approach 1:
The patent introduces a heat sink as an intermediary component between the LED and environment, which absorbs and dissipates heat, allowing the LED to operate at high power for effective disinfection without excessive temperature rise
Solution Approach 2:
The patent uses airflow (pneumatic approach) to cool the heat sink, removing accumulated heat from the system and maintaining safe operating temperatures during high-power disinfection operation
3Reliability
If separate disinfection and exhaust systems are used, then each function can be optimized, but device complexity and energy consumption increase
Solution Approach 1:
The patent merges the disinfection light emitter and exhaust fan into a single integrated housing, combining two separate functions (disinfection and ventilation) into one device, reducing overall system complexity and space requirements
Solution Approach 2:
The patent makes the airflow generated by the exhaust fan serve dual purposes: both ventilating the space and cooling the heat sink, eliminating the need for separate cooling systems and reducing energy consumption
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 system effectively inactivates bacteria and microorganisms while safely avoiding human exposure and reducing energy consumption by utilizing existing airflow for cooling, extending LED lifespan and improving installation safety.
Implementation Method 1
a light emitter disposed on a substrate and configured to at least produce a light comprising a radiant flux sufficient to initiate inactivation of microorganisms, wherein at least 20% of a spectral energy of the light is in a wavelength range of 380-420 nanometers (nm)
Implementation Method 2
a light emitter disposed on a substrate and configured to at least produce a light comprising a radiant flux sufficient to initiate inactivation of microorganisms
Implementation Method 3
a fan configured to create an airflow through the vent and towards the substrate
Implementation Method 4
a sensor configured to measure a temperature associated with the light source
Implementation Method 5
a controller in communication with the light source, the fan, and the sensor. The controller may be configured to adjust, based on the temperature associated with the light source, an airflow characteristic
Data Source
AI summary
Systems, methods, and apparatuses involving lighting device dissipation are provided. An example light emitting device for inactivating microorganisms may comprise a vent configured to allow air to flow therethrough. The light emitting device may comprise a light emitter disposed on a substrate and configured to at least produce a light. The light may comprise a radiant flux sufficient to initiate inactivation of microorganisms, wherein at least 20% of a spectral energy of the light is in a wavelength in a range of 380-420 nanometers (nm). The light emitting device may comprise a fan configured to create an airflow through the vent and towards the substrate.