Vehicle Display Cooling via External Heat-Conducting Protrusion
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Solution Overview
Problem
Existing vehicle display devices with liquid crystal elements face challenges in preventing temperature rises, particularly when a transparent heat conduction member is in contact with the liquid crystal display element, as existing configurations do not effectively accelerate heat radiation.
Innovation Solution
A vehicle display device with a transparent heat conduction member in contact with the liquid crystal display element, featuring a protrusion that protrudes from the housing and a heat radiation accelerating means, including a flow passage and fan, to enhance heat dissipation by directing cooled air through the protrusion for efficient heat transfer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a transparent heat conduction member is in contact with the liquid crystal display element, then heat can be conducted away from the display element, but heat radiation is not sufficiently accelerated leading to temperature rise
Solution Approach 1:
The heat conduction member extends in the thickness direction (third dimension) beyond the housing, transforming a two-dimensional heat conduction problem into a three-dimensional heat radiation solution. This dimensional extension allows the protrusion to radiate heat to the external environment, effectively accelerating heat dissipation and preventing temperature rise of the liquid crystal display element.
Solution Approach 2:
The protrusion of the heat conduction member acts as an intermediary heat transfer component between the liquid crystal display element and the external environment. It receives heat from the display element through conduction and dissipates it to the surrounding air through radiation and convection, serving as an effective thermal bridge that accelerates overall heat removal.
2Area of stationary object
If the heat conduction member is enclosed within the housing, then the structure is compact, but heat radiation is restricted and temperature control is insufficient
Solution Approach 1:
The heat conduction member is segmented into two functional zones: an internal portion within the housing that conducts heat from the display element, and an external protrusion portion that radiates heat to the environment. This segmentation allows the structure to maintain compactness within the housing while extending the heat radiation function to the external space, simultaneously achieving space efficiency and effective temperature control.
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 solution effectively prevents temperature rises in the liquid crystal display element by accelerating heat radiation, ensuring the device operates within safe temperature limits even under exposure to external light, such as sunlight.
Implementation Method 1
a heat conduction member that is disposed to be in contact with either a display surface or a rear surface of the liquid crystal display element
Implementation Method 2
the heat radiation accelerating means accelerates heat radiation of the protrusion
Data Source
AI summary
A vehicle display device includes: a housing; a liquid crystal display element that is housed in the housing; a mirror that is housed in the housing, and reflects display light to a windshield of a vehicle, the display light being output from the liquid crystal display element; a heat conduction member that is disposed to be in contact with either a display surface or a rear surface of the liquid crystal display element, the heat conduction member being transparent and having a plate shape; and heat radiation accelerating means, the housing includes a through-hole that the heat conduction member is insertable into, the heat conduction member pierces through the through-hole, and includes a protrusion that protrudes from the through-hole to an external space of the housing, and the heat radiation accelerating means accelerates heat radiation of the protrusion.