Illuminated Keypad Buttons Using Faceplate Gap Status Indication
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Solution Overview
Problem
Home automation systems lack effective visual feedback mechanisms for users to intuitively understand the status and control of electrical loads, particularly in dark environments, limiting user convenience and usability.
Innovation Solution
A control device with a light source that illuminates the gap between a button and its faceplate, providing visual feedback through dimming, blinking, or strobing to indicate the status or selection of presets, and featuring a control circuit that adjusts power delivery to electrical loads upon button actuation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a control device is used to control electrical loads in dark environments, then the basic control function is achieved, but visual feedback and status indication are insufficient
Solution Approach 1:
The control device provides preliminary illumination through the light source before user interaction is needed, illuminating the gap around the button in advance to guide user operation in dark environments. This preliminary lighting action enables users to locate and operate the control device without difficulty.
Solution Approach 2:
The control device implements visual feedback by illuminating the gap around the button to indicate operational status, preset selection, and system state. This feedback mechanism allows users to understand the current state and control outcomes without needing additional lighting or visual aids.
2Loss of information
If a light source is added to illuminate the gap around the button, then visual feedback is improved, but device complexity increases
Solution Approach 1:
The light source serves multiple functions: it provides visual feedback for button status, indicates preset selection, guides user operation in dark environments, and can display system state information. This multi-functionality reduces the need for separate indicators for each function.
Solution Approach 2:
The illumination is localized specifically to the gap around the button rather than providing general ambient lighting. This targeted approach provides necessary visual feedback while minimizing light waste and energy consumption, and the simple localized structure adds minimal complexity to the device.
3Loss of information
If the light source illuminates the gap to provide comprehensive status indication, then information feedback is improved, but energy consumption increases
Solution Approach 1:
The light source operates periodically or on-demand based on user interaction rather than continuously. It illuminates the gap when buttons are pressed, during preset selection, or when status indication is needed, and remains off during idle periods to conserve energy.
Solution Approach 2:
The illumination provides just enough light to clearly indicate status and guide operation without excessive brightness. The light is focused on the gap area rather than illuminating the entire environment, providing partial but sufficient illumination for the specific purpose of status indication and user 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 interaction by providing clear visual cues for load control and status indication, improving convenience and usability, especially in dark environments through the nightlight feature.
Implementation Method 1
The control device may include a light source that may be located inside of the control device and may illuminate the gap between the button and the opening of the faceplate
Implementation Method 2
The diffuser portion may contact a rear surface of the cap portion and may conduct light emitted by the light source to illuminate the gap around the button
Data Source
AI summary
A control device for controlling power delivered to an electrical load may illuminate an area around a button of the control device, such as a gap formed between the button and an opening of a faceplate of the control device. The control device may illuminate the gap to provide a nightlight feature, to provide feedback (e.g., a status of the electrical load), and/or to indicate a selected preset. The button may have a cap portion that may be actuated by a user and a diffuser portion that may contact a rear surface of the cap portion and may conduct light emitted by an internal light source to illuminate the gap around the button.