Water-Activated LED Housing for Floating Device Recovery
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Solution Overview
Problem
Portable electronic devices that float on water after being dropped cannot be easily located at night or in low visibility conditions, making recovery difficult.
Innovation Solution
Incorporation of a drop detection mechanism and a light-emitting body within a translucent housing that emits light when the device enters water, ensuring visibility even in poor conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a floating-type device is used to stay afloat when dropped into water, then the device can be recovered, but it cannot be easily found at night or in poor visibility conditions
Solution Approach 1:
The patent applies color changes by incorporating a light emitting body that changes the visual appearance of the device from invisible to visible when activated. The light emitting body emits light in response to water contact, transforming the device's detectability without affecting its floating capability, thus resolving the contradiction between recoverability and detectability in poor visibility conditions
2Difficulty of detecting and measuring
If a translucent part is provided in the housing to allow light transmission, then the light emitting body can be seen, but the waterproof sealing may be compromised
Solution Approach 1:
The patent applies local quality by making only specific portions of the housing translucent rather than the entire housing. The translucent parts are strategically positioned to allow light transmission from the light emitting body while maintaining waterproof sealing in other critical areas. This localized approach enables detectability without compromising overall waterproofing reliability
Solution Approach 2:
The patent uses an intermediary approach by introducing a light emitting body as a mediator between the waterproof housing and the external environment. The light emitting body is positioned and designed to transmit light through specific translucent portions of the housing, serving as an intermediary that enables visibility while the housing structure maintains waterproof integrity through its overall design and sealing mechanisms
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 can be easily found on the water surface at night or in low visibility due to the light emission, facilitating recovery.
Implementation Method 1
a light emitting body (41) provided inside a housing (11)
Implementation Method 2
the translucent part has such transparency that when the light emitting body is turned on, the light is transmitted, while in a usual time when the light emitting body is turned off, the inside cannot be seen through from the outside of the housing
Data Source
AI summary
A drop detection part that detects drop of the device into the water, a light emitting body disposed in the housing, and a light-emission control circuit that makes the light emitting body emit light when the drop detection part detects the drop into the water are provided, and the rear face of the housing is made translucent, a lower part of a sealing member sealing the front housing and the rear housing is also made translucent, and a cover part covering the light emitting body is formed on this translucent part.