Light Source Module Heat Dissipation Airflow Segmentation
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Solution Overview
Problem
The existing projection apparatuses face increased manufacturing costs and fabrication difficulties due to the need for complex heat dissipation designs in the light source module, which also lead to potential overheating issues.
Innovation Solution
A light source module design that includes a lamp holder fixed directly to the housing without an additional plastic base, featuring a cover with a first inlet and outlet, and a casing with a second inlet and outlet, allowing for efficient heat dissipation airflow through both paths, reducing the need for complex casing shapes and thereby lowering costs and simplifying fabrication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a plastic base is used to fix the light source module, then the light source module can be assembled, but the manufacturing cost increases
Solution Approach 1:
The patent removes the plastic base component from the light source module assembly, fixing the lamp holder directly to the housing. This extraction of the unnecessary component reduces both manufacturing cost and structural complexity while maintaining the functional assembly.
Solution Approach 2:
The patent merges the lamp holder assembly with the housing by fixing the lamp holder directly to the housing, eliminating the need for a separate plastic base. This consolidation reduces the number of parts and simplifies the overall structure.
2Temperature
If the heat dissipation fan speed is increased to overcome resistance from the light-shielding casing, then heat dissipation effect is improved, but the fan noise becomes too large
Solution Approach 1:
The patent divides the heat dissipation airflow path into two separate channels: one through the cover and another through the casing. This segmentation allows independent optimization of each path and reduces resistance in each channel, enabling effective heat dissipation at lower fan speeds and reduced noise.
Solution Approach 2:
The patent introduces an air guide structure as an intermediary component to guide and distribute the heat dissipation airflow properly through the cover and casing. This mediator ensures efficient airflow distribution without requiring high fan speed, thereby reducing noise.
3Ease of manufacture
If the light-shielding casing is designed with step shape or arc shape to guide heat dissipation airflow, then resistance to airflow is decreased, but manufacturing cost and fabrication difficulty increase
Solution Approach 1:
Instead of modifying the casing shape, the patent segments the airflow path by adding a separate cover with dedicated airflow channels. This approach reduces resistance without requiring complex step or arc shapes in the casing itself, maintaining simple geometry and easy manufacturing.
Solution Approach 2:
The cover acts as an intermediary component that provides the airflow guidance function previously requiring complex casing shapes. This mediator allows the casing to maintain simple geometry while still achieving effective airflow management through the cover's streamlined design.
4Illumination intensity
If the light source emits light at high power, then illumination intensity is improved, but heat generation causes excessively high temperature that may melt the casing
Solution Approach 1:
The patent segments the heat dissipation pathways into multiple channels through the cover and casing, distributing the thermal load across separate airflow paths. This segmentation allows higher light output with improved heat dissipation efficiency, preventing excessive temperature rise that could melt the casing.
Solution Approach 2:
The patent ensures continuous heat dissipation through properly designed airflow channels that maintain steady-state heat removal. This continuous action prevents temperature buildup even at high light output levels, allowing sustained operation without overheating or casing damage.
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 design reduces manufacturing costs and fabrication complexity while effectively managing heat dissipation airflow, preventing overheating and melting of the casing, thus enhancing the light source's efficiency and reducing noise from the heat dissipation fan.
Implementation Method 1
a heat dissipation fan is generally used in the projection apparatus to provide a heat dissipation airflow to the light source module to achieve a heat dissipation effect
Data Source
AI summary
A light source module and a projection apparatus including the light source module, an optical engine module, and a projection lens are provided. The light source module includes a lamp holder, a casing, a light source, and a heat dissipation fan. The lamp holder has a cover having a first inlet and a first outlet. The casing is connected to the lamp holder and has a second inlet and at least one second outlet. The light source is fixed to the lamp holder fixed to a housing of the projection apparatus. The heat dissipation fan generates a heat dissipation airflow through an outflow side. A first part of the heat dissipation airflow enters the cover through the first inlet, and leaves the cover through the first outlet. A second part of the heat dissipation airflow enters the casing through the second inlet, and leaves the casing through the second outlet.