Vehicle Display Apparatus Inclined Screen Stepwise LED
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Solution Overview
Problem
Existing vehicle display apparatuses face challenges in achieving space-saving designs due to the need to prevent light reflection from returning to the occupant's eyes, which often results in a larger housing and increased overall size.
Innovation Solution
The vehicle display apparatus incorporates a display device with a display screen inclined relative to the optical axis of the emission light, an LED substrate with LED chips arranged stepwise along the inclination of the display screen, and a main housing with a specific opening configuration to emit display light while minimizing the apparatus's volume.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the display surface is disposed to be inclined with respect to the optical axis to prevent light reflection from returning to the occupant's eyes, then glare prevention is improved, but the housing size increases
Solution Approach 1:
The patent applies dimensionality change by arranging LED chips in a stepwise pattern along the inclination direction of the display surface. This creates a multi-level structure that accommodates the inclined display orientation while maintaining a compact housing footprint, effectively resolving the contradiction between glare prevention and housing size reduction.
Solution Approach 2:
The patent changes the spatial arrangement parameter of LED chips from a conventional flat layout to a stepwise inclined layout. This parameter change allows the light emission to follow the inclined display surface orientation, preventing glare while minimizing the housing volume required to accommodate this configuration.
2Object-affected harmful factors
If the display surface is inclined to prevent light reflection, then occupant comfort is improved, but the device complexity increases
Solution Approach 1:
The patent segments the LED chip array into multiple stepped groups, with each group positioned at different heights and angles to match the inclined display surface. This segmentation approach simplifies the overall structure by breaking down the complex inclined arrangement into manageable modular sections, reducing manufacturing complexity while maintaining the glare prevention function.
3Volume of moving object
If LED chips are arranged to follow the display screen inclination, then space utilization is improved, but manufacturing precision requirements increase
Solution Approach 1:
The patent applies local quality by creating distinct zones or regions for LED chip placement, with each zone having specific positioning requirements relative to the inclined display surface. This localized approach to precision positioning allows different sections to be manufactured and assembled separately with manageable precision requirements, rather than requiring uniform high precision across the entire inclined surface.
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
This configuration allows for a compact vehicle display apparatus by reducing the height and volume of the display device, while also efficiently dissipating heat generated by the LED chips and effectively managing light reflection to prevent glare for the driver.
Implementation Method 1
a backlight including an LED substrate which a plurality of LED chips are mounted on a substrate, the backlight irradiating the display with emission light
Implementation Method 2
in a case where the display surface is disposed to be inclined with respect to the optical axis in order to prevent light reflected by the display surface of the indicator mounted in the housing from returning to the eyes of the occupant
Data Source
AI summary
A vehicle display apparatus includes a display device that emits display light toward a display surface of a vehicle, and a main housing. The display device includes a display including a display screen, a backlight including an LED substrate, and a device housing to which the LED substrate is assembled. The display screen is disposed to be inclined with respect to an optical axis of the emission light. The LED substrate is disposed to face the display screen. The plurality of LED chips are arranged along an inclination of the display screen to be shifted stepwise with respect to the optical axis direction along the optical axis.