Head-Up Display Picture Generator Mounting for Cost Reduction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional head-up displays with one or two mirrors require separate manufacturing of optical units, such as heat sinks and mounts, leading to increased manufacturing costs due to the inability to share optical units between different types of head-up displays.
Innovation Solution
A head-up display apparatus design that includes a lower case with a screen and a picture generator, where the picture generator features a backlight, diffuser, and liquid crystal layer. The picture generator is coupled to either the side wall or bottom portion of the lower case depending on whether the head-up display is configured with one or two mirrors, allowing for shared components across different configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate optical units are manufactured for one-mirror and two-mirror head-up displays, then each configuration can be optimized for its specific optical path, but manufacturing costs increase due to inability to share components
Solution Approach 1:
The patent applies universality by designing the picture generating unit with a standardized mounting interface that can be installed in either the side wall or bottom portion of the lower case depending on the configuration. The unit includes a standardized case coupling portion that enables it to serve as the optical unit for both one-mirror and two-mirror head-up display systems, allowing component sharing across different product variants and reducing manufacturing costs.
2Device complexity
If the picture generator is fixed to a specific location, then the optical path is simplified for that configuration, but the design cannot accommodate different mirror configurations
Solution Approach 1:
The patent applies dynamics by making the mounting location of the picture generating unit variable rather than fixed. The unit is designed with a standardized case coupling portion that can be positioned at different locations (side wall or bottom portion of the lower case) depending on whether the system uses one mirror or two mirrors. This dynamic positioning capability allows the same optical unit to adapt to different optical path configurations without increasing device complexity.
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
The proposed design enables the sharing of the backlight unit between one-mirror and two-mirror type head-up displays, reducing manufacturing costs and simplifying production processes while maintaining functionality across different configurations.
Implementation Method 1
a backlight configured to generate light
Implementation Method 2
a diffuser uniformly to disperse light generated from the backlight
Implementation Method 3
a liquid crystal layer configured to selectively transmit light based on a magnitude of voltage applied thereto
Implementation Method 4
an aspherical mirror configured to reflect an image including driving information of the vehicle generated by the picture generator
Implementation Method 5
an aspherical mirror configured to reflect an image
Implementation Method 6
accommodate a folding mirror disposed in the light path
Implementation Method 7
a heat sink including an accommodation portion accommodating the funnel reflector and the LED PCB
Implementation Method 8
a heat sink including an accommodation portion accommodating the funnel reflector and the LED PCB
Data Source
AI summary
A head-up display apparatus and a head-up display for a vehicle are provided. The head-up display includes a lower case disposed at a lower portion of the head-up display apparatus, a screen coupled to the lower case and configured to include a light path formed therein, and a picture generator coupled to a side wall or a bottom portion of the lower case. The picture generator includes a backlight configured to generate light, a diffuser uniformly to disperse light generated from the backlight, and a liquid crystal layer to selectively transmit light based on a magnitude of voltage applied thereto. When the head-up-display apparatus is configured to include one mirror, the picture generator is coupled to the side wall of the lower case, and when the head-up-display apparatus is configured to include at least two mirrors, the picture generator is coupled to the bottom portion of the lower case.