Rotary Knob LED Ring Interface for Washer Course Selection
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Solution Overview
Problem
Laundry treating apparatuses lack effective visual feedback mechanisms for user interaction, particularly in representing power input and course selection, leading to confusion and difficulty in operating the device.
Innovation Solution
A laundry treating apparatus with a control panel featuring a rotary knob and a circular array of LEDs that create an arcuate lighting pattern around the rotary knob upon power input, allowing for intuitive visual representation of power supply and course selection through alternating LED groups that selectively turn on and off to indicate different operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If a conventional control panel with buttons and displays is used, then basic operational control is achieved, but visual feedback for user interaction is insufficient leading to confusion
Solution Approach 1:
The patent employs LEDs that emit different colors or lighting patterns to provide visual feedback to users. The lighting pattern changes dynamically based on operational states, power input detection, and course selection, creating intuitive visual cues that reduce user confusion and improve interaction clarity.
Solution Approach 2:
The system implements immediate visual feedback through LED lighting patterns that respond to user actions and system states. When power is input or courses are selected, the LEDs provide real-time visual confirmation, creating a closed-loop feedback mechanism that enhances user understanding of system status.
2Loss of information
If multiple indicators are provided on the control panel, then comprehensive information is displayed, but the complexity of representing power input and course selection increases
Solution Approach 1:
The LED array serves multiple functions simultaneously: indicating power input status, displaying course selection options, and providing operational feedback. This multi-functional design consolidates what would traditionally require separate indicators into a single versatile component, reducing overall control panel complexity while maintaining comprehensive information display.
Solution Approach 2:
The lighting pattern is dynamic rather than static, changing based on operational context. The same LED array adapts its illumination pattern to represent different states (power input detection, course selection, operational status), eliminating the need for multiple dedicated static indicators and reducing device complexity.
3Ease of operation
If a rotary knob with indicators is used for course selection, then manual control is achieved, but intuitive visual representation of power supply and course selection is lacking
Solution Approach 1:
The LED array acts as an intermediary between the rotary knob mechanism and the user's visual perception. It translates mechanical rotation and electrical signals into intuitive visual patterns that clearly represent power supply status and course selection options, bridging the gap between mechanical control and visual feedback.
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 interaction by providing clear visual cues for power input and course selection, improving usability and reducing operational complexity through the dynamic lighting patterns that rotate and change based on user input.
Implementation Method 1
a plurality of LEDs arranged on a PCB in a circular shape
Data Source
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AI summary
A laundry treating apparatus including a rotary knob (50), a control panel body (22) including a rotary knob hole (22) in which the rotary knob is rotatably positioned and at least one indicator (33) representing a course capable of being selected by the rotary knob, a plurality of LEDs (60) arranged on a PCB (21A) in a circular shape and having a larger number than that of the at least one indicator, and a window (82) through which light emitted from the plurality of LEDs passes, wherein the plurality of LEDs includes a first LED group (65-71, 74-80) including at least one LED for radiating light to an indicating region of the window corresponding to the at least one indicator, and a second LED group (61-64, 72-73) including at least one LED for radiating light to a region other than the indicating region of the window. The invention creates a lighting pattern representing a course at the indicating region of the window and creates, at the indicating regions and the non-indicating regions of the window, an arcuate or annular lighting pattern representing information other than a course display.