Color-Coded Vehicle Switch with Illuminated Indicators
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Solution Overview
Problem
Conventional switch devices for controlling electronic apparatuses in vehicles require operators to visually confirm the function of each operation body, leading to potential operating errors while driving.
Innovation Solution
A switch device with operation bodies and membrane switches, where the membrane switch includes plural contact switches that are electrically connected with a lower pressure, and a light-emitting element displays the function of the operation body, allowing operators to easily identify the intended action without releasing their hands from the steering wheel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If operators visually confirm the function of each operation body, then operating errors are reduced, but operation time increases and ease of operation deteriorates
Solution Approach 1:
The patent applies color coding to operation bodies (e.g., different colors for volume control, temperature control, mode selection) to provide immediate visual identification of function. This allows operators to recognize switch functions at a glance without needing to read labels or take additional time to confirm what each button does, thereby maintaining high operation accuracy while significantly improving ease of operation.
Solution Approach 2:
The patent introduces visual indicators (such as LED lights, colored rings, or illuminated symbols) as intermediary elements between the operation bodies and the operator. These indicators actively display the function of each switch, mediating the communication between the device and user, and eliminating the need for operators to visually search or confirm functions, thus resolving the contradiction between reliability and ease of operation.
2Measurement precision
If hands are released from steering wheel to operate switches, then operation precision improves, but driving safety deteriorates
Solution Approach 1:
By using color-coded operation bodies, the patent enables drivers to identify and operate the correct switch with their thumb or finger while maintaining grip on the steering wheel. The color provides immediate functional identification without requiring visual distraction or hand release, thus achieving both operation precision and driving safety simultaneously.
Solution Approach 2:
The visual indicators on the operation bodies serve themselves by automatically displaying their function without requiring additional user action. The colored operation bodies self-identify their purpose, allowing drivers to operate them intuitively while keeping hands on the wheel, eliminating the need for secondary confirmation actions that would compromise safety.
3Adaptability or versatility
If multiple push switches are provided for different functions, then device functionality increases, but device complexity increases
Solution Approach 1:
The patent employs a universal operation body design where a single type of switch structure can perform multiple functions through color coding and symbolic indicators. Different functions (volume up, volume down, temperature up, temperature down, mode selection) are achieved using the same physical switch mechanism, differentiated only by color and iconography. This maintains high device functionality while minimizing structural complexity.
Solution Approach 2:
The patent merges multiple functional indicators (color, symbol, LED status) into a single integrated operation body design. Rather than creating separate complex switches for each function, the patent combines visual identification elements with a unified switch mechanism, reducing overall device complexity while maintaining full functionality across multiple control operations.
Data Source
AI summary
A switch device includes a operation body, a membrane switch pushed by the operation body, and plural push switches activated by pushing the operation body via the membrane switch. The membrane switch includes plural contact switches electrically connected upon being pushed by the operation body. The switch device is activated easily without operating errors.