Transparent Meter Cluster With Single Pointer For Multi-Parameter Display
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Solution Overview
Problem
Conventional meter clusters in vehicles require separate pointers for speedometer and tachometer, limiting space and functionality for displaying additional information.
Innovation Solution
A meter cluster system with a multiple layer structure using transparent luminous panels and light sources, where a single pointer indicates different information based on mode control, allowing visibility of TFT display information through transparent panels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If separate pointers are used for speedometer and tachometer, then each pointer can independently indicate its respective information, but the device complexity increases and space is limited
Solution Approach 1:
A single pointer is designed to serve multiple functions by indicating different information (speedometer and tachometer readings) depending on the active display mode. The controller switches between displaying vehicle speed or engine rotation speed on the same dial, allowing one pointer to replace what would traditionally require two separate pointers
Solution Approach 2:
The meter cluster dynamically switches between different display modes (speedometer mode, tachometer mode, or both simultaneously) controlled by a controller. This dynamic reconfiguration allows a single pointer to effectively indicate different parameters at different times, reducing the need for multiple static pointers
2Loss of information
If multiple separate meter panels are used, then each parameter can be displayed independently, but the space consumption increases
Solution Approach 1:
The tachometer dial is nested within the speedometer dial, with both dials sharing the same circular space. The tachometer information is displayed in the central region while the speedometer information is displayed in the outer region, allowing both parameters to occupy the same physical space rather than requiring separate areas
Solution Approach 2:
The patent transitions from a two-dimensional lateral arrangement of separate meter panels to a multi-layered depth arrangement where transparent panels are stacked. This allows multiple information layers to be displayed within the same footprint area by utilizing the depth dimension through transparent overlays
3Loss of information
If opaque panels are used for each meter, then the information is clearly visible, but additional information cannot be seen through the panels
Solution Approach 1:
The patent utilizes different transparency characteristics (optical properties) of the panels to enable selective visibility. The speedometer panel is made transparent while the tachometer panel remains opaque, allowing the controller to display different combinations of information by controlling which panels are transparent or opaque at different times
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
Enables efficient use of space for displaying multiple vehicle parameters and additional information like navigation and compass directions, enhancing the driver's view with a single pointer system.
Implementation Method 1
Each of the first luminous panel and the second luminous panel has transparency. The first information of the first luminous panel is visible through the second luminous panel.
Data Source
AI summary
The present disclosure provides a meter cluster. The meter cluster includes a first luminous panel and a second luminous panel. The first luminous panel indicates first information. The second luminous panel is arranged in front of the first luminous panel. The second luminous panel indicates second information. Each of the first luminous panel and the second luminous panel has transparency. The first information of the first luminous panel is visible through the second luminous panel.