HUD Heat Dissipator Thermal Segmentation for Light Source Temperature Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional head-up display devices fail to efficiently dissipate heat generated by light sources with different operation guaranteed temperatures, leading to suboptimal performance as heat is exchanged between light sources via the circuit board and heat dissipator.
Innovation Solution
A head-up display device with a heat dissipator injection molded from high thermal conductivity resin, featuring a weld line between light sources with different operation guaranteed temperature bands, where the light source with a lower upper temperature limit is positioned in a location with higher heat dissipation characteristics to minimize heat transfer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a common heat dissipator is used for multiple light sources with different operation guaranteed temperature bands, then the device structure is simplified, but heat exchange between light sources occurs via the circuit board and heat dissipator causing suboptimal performance
Solution Approach 1:
The heat dissipator is divided into multiple independent heat dissipation regions, each corresponding to a specific light source. These regions are thermally isolated from each other through weld lines that act as thermal barriers, preventing heat exchange between different light sources while maintaining separate temperature control for each region.
Solution Approach 2:
Each heat dissipation region is designed with localized thermal characteristics optimized for its corresponding light source. The weld lines are strategically positioned to create thermal isolation zones, allowing each region to independently manage heat dissipation according to the specific thermal requirements of its associated light source.
2Device complexity
If light sources with different operation guaranteed temperatures are mounted on the same circuit board, then the device layout is simplified, but heat generated by light sources is exchanged via the circuit board limiting performance optimization
Solution Approach 1:
The circuit board is functionally segmented into multiple mounting regions, each dedicated to a specific light source. This segmentation is reinforced by the heat dissipator's corresponding divided structure, creating thermal isolation zones that prevent heat exchange between different light sources while maintaining a compact layout.
Solution Approach 2:
The weld lines on the heat dissipator act as thermal intermediary barriers between different heat dissipation regions. These weld lines create high thermal resistance zones that block heat transfer pathways, effectively isolating the thermal fields of adjacent light sources while maintaining their physical proximity on the circuit board.
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 efficient heat dissipation from light sources with different wavelengths, optimizing their performance by reducing heat exchange and ensuring each light source operates within its guaranteed temperature band.
Implementation Method 1
a heat dissipator which dissipates heat generated by the light sources
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The objective of the present invention is to efficiently dissipate heat generated by a plurality of light sources which generate light having different wavelengths. This head-up display device is provided with: a combined light output unit (10) which outputs combined light obtained by combining light emitted by a plurality of light sources (11) which emit light having different wavelengths; and a heat dissipator (15) which dissipates heat emitted by the light sources (11). The head-up display device displays a virtual image by means of the combined light. The plurality of light sources (11) include a first light source (11a) which operates in a first operation guaranteed temperature band, and second light sources (11b, 11c) which operate in a second operation guaranteed temperature band having an upper limit higher than that of the first operation guaranteed temperature band. The first light source (11a) is provided in a location (15a) on the heat dissipator (15) having a higher heat dissipation characteristic than the locations of the second light sources (11b, 11c).