Hand Dryer Visual Guidance for Drying Region and Hand Position
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Solution Overview
Problem
Users, especially inexperienced ones, face difficulties in understanding the operation of hand dryers, particularly when instructions are in a foreign language or when the drying location and nozzle orientation are not clearly defined, leading to improper usage.
Innovation Solution
A hand dryer information system with a display that visually indicates the drying region's extent, boundary, and preferred hand manipulation sequence using light emitting diodes or projected images, allowing users to follow an unambiguous drying process without language dependence.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If written or pictorial instructions are provided on the drier, then users can receive operational guidance, but users with foreign language backgrounds or cognitive difficulties still cannot understand the instructions
Solution Approach 1:
The patent replaces traditional mechanical/written instruction systems with an optical display system using LEDs. The display visually indicates the drying region boundaries and provides step-by-step hand manipulation guidance through light patterns, eliminating language barriers and cognitive interpretation requirements.
Solution Approach 2:
The patent uses different colors of LED lights to convey different operational information. For example, green LEDs indicate the drying region boundary, while different color patterns or sequences indicate different steps in the hand drying process, making instructions universally understandable through color recognition rather than language.
2Device complexity
If the drying region boundaries are not clearly marked, then the drier structure remains simple, but users cannot locate the correct positioning for hand drying
Solution Approach 1:
The patent uses illuminated LEDs in specific colors to clearly mark the drying region boundaries. The visual indication of the region extent allows users to easily identify where to position their hands without adding complex physical markings or structures to the drier housing.
3Device complexity
If the nozzle direction is not clearly indicated, then the drier structure remains simple, but users cannot understand the correct hand manipulation sequence for effective drying
Solution Approach 1:
The patent uses optical display patterns to indicate the correct hand manipulation sequence. Different LED patterns, positions, or sequences convey information about hand placement and movement, replacing what would otherwise require mechanical indicators or physical guides on the device structure.
4Ease of operation
If visual display means are added to indicate drying region and provide instructions, then user understanding improves, but the device complexity and power consumption increase
Solution Approach 1:
The patent employs LED technology which, while adding electronic components, uses simple color-based visual communication that can convey complex operational information through basic color patterns. This approach adds minimal complexity compared to more sophisticated display technologies while providing comprehensive operational guidance.
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
Enhances user friendliness and operational efficiency by providing clear, language-independent guidance for hand drying, improving the drying process and reducing power consumption.
Implementation Method 1
display means relating to a given region of the system which means serves, at least while a drying cycle is in operation, to provide a visual display
Data Source
AI summary
A drier information system is provided including display means relating to a given region of the system which means serves, at least while a drying cycle is in operation, to provide a visual display indicating at least one of the following parameters: the extent of the region; a boundary of the region; direction or example of manipulation of a pair of hands or other article while in the region to provide for a preferred drying sequence. The visual display can represent the parameters as a two dimensional array within or adjacent the region. Alternatively the visual display can represent the parameters as a virtual or actual three dimensional array within or adjacent the region.