Moisture Absorbing Member Placement for Wrist Device Antifogging
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Solution Overview
Problem
Wrist watch-type activity meters experience reduced display visibility due to moisture-induced fogging, as existing moisture-absorbing solutions are insufficient in effectively addressing the issue, particularly due to increased distance from the moisture-absorbing member to the affected areas.
Innovation Solution
A portable electronic device design featuring a moisture-absorbing member positioned along the outer edge of the display unit between the cover plate and the display, with a ring shape and integrated displays or patterns on the cover plate side, allowing for effective moisture absorption and improved designability without impairing visibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If moisture absorbing members are placed far from the cover plate to accommodate high-density electronic components, then device complexity is reduced, but the antifogging effect deteriorates due to increased distance and lengthened ventilation channels
Solution Approach 1:
The patent applies local quality by placing moisture absorbing members specifically at the periphery of the display unit, close to the cover plate, rather than uniformly distributing them throughout the device. This localized placement optimizes moisture absorption at the critical area where fogging occurs most frequently, while still accommodating high-density component arrangement in the central region.
2Reliability
If moisture absorbing members are positioned close to the cover plate to improve antifogging effect, then reliability is improved, but device complexity increases due to space constraints in high-density arrangements
Solution Approach 1:
The patent segments the moisture absorbing members into multiple smaller units positioned at different peripheral locations around the display unit. This segmentation allows the moisture absorption function to be distributed across multiple points close to the cover plate, improving overall antifogging effectiveness without creating a single large component that would complicate the internal arrangement.
3Reliability
If the moisture absorbing member is placed at the periphery to shorten distance to cover plate, then the antifogging effect is improved, but the area available for other components is reduced
Solution Approach 1:
The patent utilizes the peripheral dimension around the display unit for placing moisture absorbing members, rather than occupying central area. By positioning these members along the outer edge or periphery of the display unit, the design effectively uses the circumferential space that would otherwise be unused, maintaining central area availability for high-density electronic component arrangement while ensuring moisture absorbing members are close to the cover plate for optimal antifogging performance.
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 solution provides an excellent antifogging effect by shortening the distance to the moisture-absorbing member, maintaining low humidity levels, and enhancing design aesthetics through integrated displays and patterns, effectively preventing dew condensation and maintaining visibility.
Implementation Method 1
the moisture absorbing member disposed between the over plate and the display unit... the moisture in the space between the cover plate and the display unit can be more effectively absorbed by the moisture absorbing member
Data Source
AI summary
A portable electronic device (wrist device) includes: a case (top case and bottom case); a display unit accommodated in the case; a cover plate closing an opening of the case; and a moisture absorbing member disposed along an outer edge of the display unit between the cover plate and the display unit.