Bent Heat Dissipating Element for Projection Device Thermal Management
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Solution Overview
Problem
Portable projection devices face challenges in heat dissipation due to insufficient space between the light source and the housing, which can affect the performance and image quality.
Innovation Solution
The design incorporates a heat dissipating element with a bent structure that includes a first plate portion connected to the light source module, a second plate portion forming an angle with the first plate portion, and a fin portion with multiple fins arranged between the housing ends, allowing for effective heat transfer and airflow direction that prevents hot air from interfering with the image beam.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If heat dissipating fins are directly connected to the back side of the light source, then heat dissipation efficiency is improved, but the device requires more space between the light source and housing
Solution Approach 1:
The heat dissipating element transitions from a planar structure to a three-dimensional bent structure with multiple plate portions connected at angles. This spatial transformation allows the heat dissipation path to extend in multiple directions rather than requiring a large flat area, enabling effective heat dissipation within limited space between the light source and housing.
Solution Approach 2:
The bent heat dissipating element with its multiple plate portions and fins is designed to nest within the confined space of the projection device housing. The structure efficiently utilizes the available three-dimensional space by folding and angling the plate portions, similar to how nested dolls occupy space hierarchically, achieving comprehensive heat dissipation coverage without requiring excessive clearance.
2Temperature
If heat dissipating fins are directly connected to the back side of the light source, then heat transfer by conduction is improved, but the device structure becomes simpler with less design flexibility
Solution Approach 1:
The heat dissipating element is segmented into multiple plate portions (first plate portion, second plate portion, third plate portion) connected at different angles, with fin portions attached to each segment. This segmentation allows each portion to be optimized for specific heat dissipation functions while maintaining overall structural integrity, achieving both effective heat transfer and design flexibility.
Solution Approach 2:
The heat dissipating element employs asymmetric angular connections between plate portions rather than uniform straight-line arrangements. The first plate portion connects to the light source at a first angle, the second plate portion connects at a second angle, and the third plate portion connects at a third angle. This asymmetric angular configuration optimizes heat distribution pathways and airflow patterns, enhancing heat dissipation performance while providing design adaptability.
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 achieves preferable heat dissipation for the light source module even in limited space, ensuring efficient cooling without compromising image quality by directing airflow oppositely to the image beam.
Implementation Method 1
the heat energy generated by the light source may be transmitted to the heat dissipating fins by means of heat conduction
Implementation Method 2
The plurality of first fins is arranged between the first end and the second end
Implementation Method 3
The first fin portion is connected to the second plate portion and includes a plurality of first fins arranged at intervals
Data Source
AI summary
A projection device includes a light source module, an optical engine module, a projection lens, a housing, and at least one first heat dissipating element. The housing comprises a first end and a second end opposite to each other. The at least one first heat dissipating element is disposed in the housing, and each of the at least one first heat dissipating element includes a first plate portion, a second plate portion, and a first fin portion. The first plate portion is connected to the light source module. The second plate portion is connected to the first plate portion. The first fin portion is connected to the second plate portion and includes a plurality of first fins arranged at intervals. These first fins are arranged between the first end and the second end.