Frameless Inside Mirror Symbol Light Control for Glare Reduction
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Solution Overview
Problem
Frameless inside mirrors experience visual interference due to symbol light glare during nighttime driving, making it difficult for drivers to locate operation buttons and reducing visibility and operability, especially in both daytime and nighttime conditions.
Innovation Solution
A method of controlling symbol lights on a frameless inside mirror, allowing drivers to easily find operation buttons by selectively turning on or off all symbol lights based on a selected mode, including a symbol light on mode, off mode, and temporary on mode, to prevent glare and enhance visibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If symbol lights are always turned on to improve button visibility, then button location visibility is improved, but visual interference due to glare occurs during nighttime driving
Solution Approach 1:
The patent applies dynamics by making the symbol light state changeable based on driving conditions. The control unit automatically switches between on-state, off-state, and temporary on-state depending on whether it is daytime or nighttime, and whether the vehicle is moving or stationary. This dynamic adjustment resolves the contradiction by providing visibility when needed and eliminating glare when not needed.
Solution Approach 2:
The patent changes the illumination parameter of the symbol lights based on driving conditions. During nighttime driving, the system transitions from a constant on-state to an automatic control mode that adjusts light output according to vehicle motion status and ambient conditions, thereby reducing glare while maintaining necessary visibility.
2Object-affected harmful factors
If symbol lights are turned off to eliminate glare during nighttime, then visual interference is reduced, but button location visibility deteriorates
Solution Approach 1:
The system provides self-service by automatically detecting driving conditions and adjusting symbol light states without driver intervention. The control unit monitors vehicle motion status and ambient light levels, then autonomously switches between on-state, off-state, and temporary on-state to maintain optimal visibility while eliminating glare.
Solution Approach 2:
The system uses feedback from sensors that detect ambient light conditions and vehicle motion status to automatically adjust symbol light output. This closed-loop control ensures that lights are turned off during nighttime driving to eliminate glare, but can be temporarily activated when buttons need to be operated.
3Area of stationary object
If frameless mirror design is used to improve sight area, then mirror sight area is increased, but button location finding becomes difficult
Solution Approach 1:
The patent uses light emission (a form of optical change) to highlight button locations. The symbol lights surrounding the buttons emit light to indicate button positions, making them easily detectable against the frameless mirror background. This optical enhancement compensates for the reduced visual cues from the absence of a traditional frame.
Solution Approach 2:
The symbol lights act as an intermediary element between the buttons and the driver's vision. These lights provide visual cues that guide the driver's attention to button locations without obstructing the mirror's sight area, thus mediating between the need for large sight area and easy button detection.
Data Source
AI summary
Disclosed is a method of controlling lights of symbols for a frameless inside mirror that includes operation buttons, symbols and lighting means. The method controls the lights according to a selected symbol light mode. The method may include turning on all of the lights for the symbols in a symbol light on mode when an operation of pushing a symbol light button is recognized in a symbol light off mode, turning off all of the lights for the symbols in the symbol light off mode when an operation of pushing the symbol light button is recognized in the symbol light on mode, and turning on all of the lights for the symbols for a predetermined time period in a symbol light temporary on mode when an operation of pushing any other operation symbol or symbols except those for the symbol light button and the SOS button is recognized in the symbol light off mode.