Hybrid Vehicle Display Layout for Clear EV-HV Mode Indication
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Solution Overview
Problem
Existing display devices for hybrid vehicles struggle to clearly convey the vehicle's operating state, particularly in switching between electric vehicle and hybrid vehicle modes, leading to difficulty for drivers in determining the current mode and potential unexpected engine activation.
Innovation Solution
A display device featuring distinct first and second display regions with pointing portions and strip-shaped images that indicate the vehicle's output modes, with different display forms, thicknesses, and color combinations to differentiate between electric motor and internal combustion engine operations, along with a third region indicating the likelihood of engine activation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a dividing line is displayed to indicate mode switching, then the switching threshold is clearly marked, but the driver has difficulty determining the current traveling state and may experience unexpected engine activation
Solution Approach 1:
The display is divided into multiple distinct regions: a first display region showing a first variable scale with a first pointing portion for EV mode indication, and a second display region showing a second variable scale with a second pointing portion for HV mode indication. This segmentation allows the driver to clearly distinguish between different traveling states without confusion from a single complex dividing line.
Solution Approach 2:
Different display forms and visual characteristics are applied to different regions of the display. The first display region uses specific visual characteristics for EV mode variables, while the second display region uses different visual characteristics for HV mode variables. This local differentiation enhances the driver's ability to quickly identify the current mode and understand vehicle state without ambiguity.
2Loss of information
If multiple items of vehicle state information are displayed, then comprehensive vehicle monitoring is achieved, but the information becomes difficult to understand
Solution Approach 1:
Multiple vehicle state variables are segmented into different display regions based on their relevance to different traveling modes. The first display region presents variables pertinent to EV mode with a first pointing portion, while the second display region presents variables pertinent to HV mode with a second pointing portion. This organization allows comprehensive information display while maintaining clarity through structured separation.
Solution Approach 2:
The display utilizes a two-dimensional layout with aligned display regions, where the first display region and second display region are positioned side by side. This spatial arrangement in another dimension allows the driver to simultaneously perceive multiple vehicle state variables without information overload, as each variable is positioned in a distinct visual zone with its own pointing indicator.
Data Source
AI summary
A display device 30 displays information of variables that reflect a state of a vehicle 10. The display device 10 includes: a first display region 31 that displays a scale of a first variable; a second display region 32 that is provided to be aligned with the first display region 31 and displays a scale of a second variable; a first pointing portion 42 that points, in the first display region 31, the first variable in accordance with the state of the vehicle 10; a first strip-shaped image 43 that is displayed between a pointed position of the first pointing portion 42 and a start point S1 of the first display region 31; a second pointing portion 52 that points, in the second display region 32, the second variable in accordance with the state of the vehicle 10; and a second strip-shaped image 53 that is displayed between a pointed position of the second pointing portion 52 and a start point S2 of the second display region.