Projection Apparatus Heat Dissipating Module Noise Reduction
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Solution Overview
Problem
Portable projection apparatuses face challenges in reducing system noise and improving heat dissipation due to their compact size, which limits the placement and effectiveness of heat-dissipating fans, and increased heat generation with higher brightness leading to noise when fan speed is increased for better heat dissipation.
Innovation Solution
A projection apparatus design featuring a housing with strategically placed heat dissipating members and fans, where the fans are not directly adjacent to the air outlet, and heat dissipating members are used to redirect airflow, reducing noise transmission and enhancing heat dissipation by separating cooling airflow paths within the device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the rotational speed of fan is higher to improve heat dissipating effect, then the heat dissipating effect is better, but a large noise is accompanied
Solution Approach 1:
The patent divides the housing into multiple containing spaces (first containing space, second containing space, third containing space) separated by partition walls, with each space having its own fan and heat dissipating members. This segmentation allows independent control of airflow paths and noise sources, enabling lower fan speeds in each compartment while collectively achieving effective heat dissipation across the entire device.
Solution Approach 2:
The patent introduces heat dissipating members (heat dissipating fins, heat pipes) as intermediaries between the light source module and the airflow. These members efficiently transfer heat from the light source to the airflow path, reducing the reliance on high fan speeds for heat removal, thereby lowering noise while maintaining effective heat dissipation.
2Weight of moving object
If portable projection apparatus is made more compact and lightweight, then portability is improved, but the position and quantity of heat-dissipating fans are limited
Solution Approach 1:
The patent combines multiple functions into integrated structures: partition walls serve both as structural dividers and as mounting surfaces for heat dissipating members; heat dissipating members are integrated with both the light source module and airflow paths; fans are positioned to serve multiple cooling zones simultaneously. This merging allows effective heat dissipation in a compact design without requiring additional standalone components.
Solution Approach 2:
The patent utilizes vertical stacking of containing spaces and three-dimensional positioning of heat dissipating members (extending in multiple directions from the light source) to maximize heat dissipation surface area within a compact footprint. This dimensional optimization allows adequate cooling capacity without increasing the overall device volume.
3Illumination intensity
If brightness of the projection apparatus is higher, then projection quality is improved, but the generated heat is increased
Solution Approach 1:
The patent introduces heat dissipating members (fins, heat pipes) as thermal intermediaries between the light source module and the cooling airflow. These members provide efficient thermal coupling, allowing high-power light sources to be operated at high brightness levels while maintaining controlled temperatures through enhanced heat transfer to the segmented airflow paths.
Solution Approach 2:
The housing is divided into multiple containing spaces with separate airflow paths for cooling different components. This segmentation allows targeted cooling of the light source module independently from other components, enabling the light source to operate at high brightness levels generating significant heat while dedicated cooling channels efficiently remove this heat without affecting other system components.
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 reduces noise and enhances heat dissipation in portable projection apparatuses by preventing direct noise transmission and minimizing airflow interference, resulting in improved performance and reduced thermal issues.
Implementation Method 1
a first fan (144) disposed in the first area (S1) and between the light source module (121) and the first heat dissipating member (141)
Implementation Method 2
a second fan (145) disposed in the second area (S2) and between the electronic assembly (130) and the first heat dissipating member (141)
Implementation Method 3
The first heat dissipating member (141), the second heat dissipating member (142) and the third heat dissipating member (143) are connected to the light source module (121)
Implementation Method 4
heat dissipating members are used to redirect airflow, reducing noise transmission and enhancing heat dissipation by separating cooling airflow paths within the device
Data Source
AI summary
A projection apparatus includes a housing, a projection module, an electronic assembly and a heat dissipating module. The housing has first to fourth sides. The first and second sides are provided with air outlet and first air inlet respectively. A containing space is defined in the housing and has first and second areas. The heat dissipating module includes first to third heat dissipating members and first to second fans. The first, second, third heat dissipating members are connected to a light source module of the projection module. The first heat dissipating member is close to the air outlet. The second heat dissipating member is in the first area. The third heat dissipating member is in the first area and close to the second air inlet.