LCD Module Cooling Cavity Layout for Compact Projector Heat Dissipation
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Solution Overview
Problem
Existing LCD projection technologies face issues with heat dissipation due to high-power light sources, leading to increased temperature, reduced brightness, and compromised service life, with external liquid cooling solutions occupying space and affecting projection quality.
Innovation Solution
An LCD module with a built-in heat-dissipating system featuring a miniature water pump, closed cooling cavities, and internal liquid circulation, integrated with a heat sink and polarizing films, ensuring efficient and compact heat dissipation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If external liquid cooling solutions are used, then heat dissipation efficiency is improved, but device volume increases and projection quality deteriorates
Solution Approach 1:
The patent merges the cooling cavity directly into the mounting frame body, integrating the cooling function with the structural support function. This eliminates the need for separate external cooling components while maintaining effective heat dissipation, thereby reducing overall device volume without compromising cooling efficiency.
Solution Approach 2:
The cooling cavity is nested within the mounting frame body structure, with the cavity forming an integral part of the frame. This nested design allows the cooling system to occupy space that would otherwise be structural, achieving space-efficient heat dissipation without increasing external device dimensions.
2Temperature
If multiple cooling cavities are arranged on the optical path, then heat dissipation is improved, but brightness attenuation occurs and projection stability deteriorates
Solution Approach 1:
The patent extracts the cooling cavity from the optical path by positioning it on the rear side of the LCD screen within the mounting frame. This extraction ensures that cooling liquid flows only in the non-optical region, eliminating any potential interference with light transmission while maintaining effective heat dissipation from the LCD screen.
3Device complexity
If air cooling is used, then device simplicity is maintained, but heat dissipation efficiency is insufficient and dust contamination increases
Solution Approach 1:
The patent employs liquid cooling (hydraulic principle) by circulating cooling liquid through the integrated cooling cavity. This liquid-based approach provides superior heat dissipation efficiency compared to air cooling, while the liquid is contained within the sealed cavity to prevent dust contamination. The integration into the mounting frame keeps the system relatively simple without requiring extensive external piping.
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 provides uniform and rapid heat dissipation, enhances polarization performance, and maintains projection quality while minimizing volume and brightness loss.
Implementation Method 1
the miniature water pump drive cooling liquid to circulate internally between the upper cooling cavity and the lower cooling cavity through the hollow structure
Implementation Method 2
a closed cooling cavity is formed between the light-transmitting element, the mounting frame body and the LCD screen... provides uniform and rapid heat dissipation
Implementation Method 3
a heat sink fixedly connected to the mounting frame sealing plate
Implementation Method 4
a heat sink fixedly connected to the mounting frame sealing plate
Implementation Method 5
integrated with a heat sink and polarizing films, ensuring efficient and compact heat dissipation
Data Source
AI summary
An LCD module comprising a light-transmitting element, a mounting frame body and an LCD screen, wherein the light-transmitting element and the LCD screen are arranged at intervals on the mounting frame body, and a closed cooling cavity is formed between the light-transmitting element, the mounting frame body and the LCD screen. One end of the mounting frame body is provided with a double-layer structure comprising a hollow structure and a miniature water pump and the double-layer structure divides the cooling cavity into an upper cooling cavity and a lower cooling cavity. The miniature water pump drive cooling liquid to circulate internally between the upper cooling cavity and the lower cooling cavity through the hollow structure, a mounting frame sealing plate is arranged on the double-layer structure, and the LCD module with a built-in heat-dissipating system further comprises a heat sink fixedly connected to the mounting frame sealing plate.