Vehicle Display Device Independent Luminance Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing vehicle display devices compromise visibility of vehicle condition indicators when reducing display luminance to achieve anti-glare properties, as indicators are displayed smaller than state meters, impairing their visibility.
Innovation Solution
A display device with a meter unit and an indicator unit, where the meter is displayed as an image on a screen and the indicator is displayed by light, with independent luminance control, and the indicator is positioned around the opening exposing the meter, reducing the visual distance and improving visibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the display luminance is decreased to achieve anti-glare property, then the meter can be viewed comfortably, but the visibility of the indicator deteriorates
Solution Approach 1:
The display device is divided into two independent display systems: a meter display unit and an indicator display unit. Each unit has its own luminance control mechanism, allowing the meter luminance to be reduced for anti-glare while the indicator luminance is maintained separately to ensure visibility.
Solution Approach 2:
Different luminance characteristics are applied to different parts of the display. The meter area has reduced luminance for comfort, while the indicator area maintains higher luminance for visibility. This is achieved through separate luminance control units that independently adjust the brightness of each display region.
2Loss of information
If the indicator is displayed smaller than the meter, then the meter can show detailed vehicle state values, but the indicator visibility is impaired
Solution Approach 1:
The indicator is positioned in the peripheral area around the meter opening, creating a distinct display zone with different luminance characteristics. This peripheral positioning combined with independent luminance control ensures that even though the indicator is smaller, its visibility is maintained through localized brightness enhancement.
Solution Approach 2:
The indicator is arranged in a peripheral configuration around the meter opening rather than being displayed within the meter area. This spatial reconfiguration in the peripheral dimension allows the indicator to occupy a different visual zone with optimized luminance properties.
3Shape
If the indicator is positioned farther from the driver, then the meter can be displayed at optimal size, but the indicator visibility decreases due to perspective
Solution Approach 1:
The indicator is positioned in the peripheral area surrounding the meter opening, creating a localized display zone with enhanced luminance. This peripheral positioning places the indicator at an optimal visual distance that is closer than the main meter display, improving visibility through perspective while maintaining the meter's optimal display size.
Data Source
AI summary
A display device for a vehicle includes a meter unit, an indicator unit and a control unit. The meter unit includes an image display monitor having a screen, and a meter for indicating a value of a vehicle first state is displayed by an image on the screen. The indicator unit includes a display pane defining an opening for exposing the meter at a display side of the image display monitor, an indicator is provided on the display pane at a peripheral area of the opening, and the indicator displays a vehicle second state by light. The control unit controls independently a display luminance of the meter and a display luminance of the indicator.