HUD Image Generator Housing for Heat Dissipation and Compact Optics
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Solution Overview
Problem
The existing image generation apparatus for head-up displays faces challenges in minimizing the number of components and size while effectively dissipating heat generated from the light source.
Innovation Solution
The apparatus integrates a light source unit, an optical member, a liquid crystal device, and a housing with a heat dissipation function, where the light source unit and liquid crystal device are attached to the housing, eliminating the need for separate heat dissipation members and optimizing the light path to reduce the apparatus's size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a separate heat sink is provided on the back side of the substrate to dissipate heat from the light source, then heat dissipation is improved, but the number of components and the size of the apparatus increase
Solution Approach 1:
The housing is designed to integrate both structural support and heat dissipation functions. The housing includes a heat dissipation portion that directly contacts the light source mounting substrate, eliminating the need for a separate heat sink component. This merging of functions reduces the number of components while maintaining effective heat dissipation from the light source.
2Temperature
If a separate heat sink is provided on the back side of the substrate to dissipate heat from the light source, then heat dissipation is improved, but the size of the apparatus increases
Solution Approach 1:
The housing is designed to integrate both structural support and heat dissipation functions. The housing includes a heat dissipation portion that directly contacts the light source mounting substrate, eliminating the need for a separate heat sink component. This merging of functions reduces the number of components while maintaining effective heat dissipation from the light source.
3Device complexity
If the light source, lens, and liquid crystal device are supported along a linear light irradiation direction, then the light path is simplified, but the apparatus size increases
Solution Approach 1:
The apparatus transitions from a linear light path configuration to a folded optical path using reflective surfaces. The light from the light source is reflected by a first reflector onto a liquid crystal panel, which then reflects light to a second reflector, and finally to a combiner. This dimensional change in light path configuration reduces the apparatus size while maintaining functional 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
This configuration effectively suppresses the increase in the number of components and size of the apparatus while efficiently dissipating heat from the light source, enhancing the overall performance and compactness of the image generation system.
Implementation Method 1
an optical member configured to emit light emitted from the light source unit in a predetermined direction
Implementation Method 2
a housing having a heat dissipation function, wherein the light source unit and the liquid crystal device are attached to the housing
Data Source
AI summary
An image generation apparatus includes a light source unit, a light guide plate that emits light emitted from the light source unit in a predetermined direction, a liquid crystal device that generates an image by light emitted from the light guide plate, and a housing having a heat dissipation function. The light source unit and the liquid crystal device are attached to the housing.