Bidirectional Phone Sterilization Using 405 Nm Light Guide Plates
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Solution Overview
Problem
Existing mobile sterilization devices face challenges in simultaneously sterilizing both front and rear surfaces of mobile devices due to directional limitations of UVC light emission and potential health hazards from UVC light, as well as issues with light transmission and diffusion.
Innovation Solution
A mobile bidirectional sterilization device that uses visible light with a 405 nm wavelength, emitted in downward, upward, and lateral directions through a light guide plate made of a light guiding film, diffusing and reflecting the light to ensure comprehensive surface sterilization, while also incorporating a power charger and heat dissipation fan for efficient charging and cooling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If UVC light is used for sterilization, then sterilization effectiveness is improved, but health hazards and directional limitations worsen
Solution Approach 1:
The patent changes the wavelength parameter from UVC (100-280 nm) to visible light at 405 nm. This parameter change maintains sterilization effectiveness while eliminating the health hazards associated with UVC exposure, as 405 nm visible light is safer for human exposure while still possessing germicidal properties
Solution Approach 2:
The patent converts the previously harmful UVC light into beneficial visible light at 405 nm. By shifting to this wavelength, the light retains sterilization capabilities while becoming safe for human exposure, thus converting a harmful factor into a beneficial one
2Device complexity
If UVC LED emits light from top to bottom, then device structure is simplified, but ability to sterilize both front and rear surfaces simultaneously worsens
Solution Approach 1:
The patent divides the single light source into two separate sterilization light generators: one positioned above the mobile device to illuminate the front surface, and another positioned below to illuminate the rear surface. This segmentation enables simultaneous sterilization of both surfaces while maintaining relatively simple device structure
Solution Approach 2:
The patent transitions from unidirectional (top-to-bottom) light emission to multidirectional illumination by positioning light sources in different spatial dimensions (above and below the device). This dimensional change enables simultaneous sterilization of front and rear surfaces without significantly increasing device complexity
3Object-affected harmful factors
If visible light with 405 nm wavelength is used, then health hazards are reduced, but light transmission and diffusion capabilities worsen
Solution Approach 1:
The patent introduces reflectors as intermediary elements to enhance light transmission and diffusion. The reflectors bounce and redirect the visible light at 405 nm, compensating for its limited natural diffusion capability and ensuring effective illumination and sterilization of all device surfaces
Solution Approach 2:
The patent combines multiple light paths by merging direct light emission with reflected light paths. This combination ensures comprehensive coverage of all device surfaces, compensating for the limited diffusion capability of 405 nm visible light while maintaining its health safety advantages
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 device effectively sterilizes all surfaces of mobile devices, enhancing hygiene by removing germs and reducing health hazards associated with UVC light, while improving marketability and reducing production costs through energy amplification and omnidirectional light diffusion.
Implementation Method 1
a light guide plate extension section configured to connect the first sterilization light generator and the second sterilization light generator and configured to generate visible light laterally emitted to a lateral surface of the mobile device
Implementation Method 2
The UVC LED unit emits UVC light onto the mobile devices (e.g., smart phones and mobile phones) placed on the mobile pedestal, while the reflector enhances sterilization efficiency by concentrating and reflecting the emitted UVC light
Data Source
AI summary
A mobile bidirectional sterilization device includes a removable mobile bidirectional sterilization device in which a light guiding plate made of a light guiding film is connected from a power charger to a hinged cover through a curved connection section to emit visible light of a light-emitting diode (LED) to front, rear, and lateral surfaces of a mobile device or a fixed mobile bidirectional sterilization device in which the light guiding plate made of the light guiding film emits the visible light of the LED to the rear and front surfaces of the mobile device at a console bracket and a center fascia charger, solves a problem of harmfulness to the human body and a problem of directivity and transmittance due to an omnidirectional sterilization effect of the mobile device by the visible light with a 405 nm wavelength.