Dual-Light Housing Layout to Block UV Damage in Kitchen Sterilization
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Solution Overview
Problem
Kitchens provide an environment conducive to germ growth due to high temperature and humidity, necessitating effective sterilization solutions.
Innovation Solution
A lighting device with integrated visible and sterilization light sources, where the visible light source is positioned to avoid direct exposure to ultraviolet light, using a housing and cover unit to minimize deformation and enhance reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the visible light source and sterilization light source are integrated in the same housing, then the sterilization function is improved, but the visible light source may be deformed by ultraviolet light exposure
Solution Approach 1:
The housing is divided into distinct regions: a first housing portion containing the visible light source and a second housing portion containing the sterilization light source. This spatial segmentation isolates the visible light source from ultraviolet radiation while maintaining integration of both functions in one device.
Solution Approach 2:
A partition wall is introduced as an intermediary structure between the first and second housing portions. This partition acts as a barrier that blocks ultraviolet light from reaching the visible light source while allowing both sources to coexist in the same overall housing structure.
2Device complexity
If the visible light source is positioned close to the sterilization light source, then the device compactness is improved, but the visible light source is exposed to harmful ultraviolet light
Solution Approach 1:
The housing is segmented into separate first and second housing portions for the visible and sterilization light sources respectively. This segmentation allows the sources to be positioned close together for compactness while the partition wall prevents ultraviolet exposure to the visible light source.
Solution Approach 2:
The partition wall serves as an intermediary barrier that enables close proximity of the two light sources without direct harmful interaction. It allows spatial compactness while blocking the harmful ultraviolet radiation from the sterilization source from reaching the visible source.
3Reliability
If the partition wall is made thick to block ultraviolet light, then the protection of visible light source is improved, but the overall device size increases
Solution Approach 1:
The partition wall is designed with specific thickness parameters optimized to block ultraviolet light while minimizing impact on overall device size. The thickness is sufficient to provide effective UV protection but kept within limits that maintain device compactness.
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
Provides effective sterilization while maintaining the functionality and longevity of the visible light source by reducing ultraviolet light exposure.
Implementation Method 1
at least one second light source spaced apart from the first light source and emitting a light having a wavelength for sterilization
Data Source
AI summary
A lighting device including at least one first light source configured to emit a visible light through a first light emitting surface, at least one second light source spaced apart from the first light source and configured to emit light having a wavelength for sterilization through a second light emitting surface, and a housing having a bottom portion, on which the first and second light sources are disposed. The housing can include at least one sidewall portion connected to the bottom portion to enclose the first light source and the second light source in one common area, in which the first and second light emitting surfaces face substantially the same direction, and both the first light emitting surface and the second light emitting surface can be disposed at a different elevation from the bottom portion of the housing.