Sliding Cooling Vent Mechanism for Closed Display Housings
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Solution Overview
Problem
Display devices for VR and AR suffer from poor heat dissipation due to closed housings or fixed dissipation ports, leading to heat accumulation and performance degradation.
Innovation Solution
A heat dissipation device with a sliding member and linkage assembly that adjusts the area of a cooling hole dynamically based on temperature, using a gear and rack mechanism to enhance precision and efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a closed housing structure is used, then structural integrity and protection are improved, but heat dissipation performance deteriorates
Solution Approach 1:
The housing is segmented into multiple sections with adjustable dissipation ports. The sliding member divides the housing into a first section and a second section, allowing selective opening/closing of dissipation ports to balance structural integrity and heat dissipation needs.
Solution Approach 2:
The dissipation ports are made dynamic through the sliding member mechanism. The ports can transition between open and closed states, allowing the housing to adapt its heat dissipation capability while maintaining structural integrity when closed.
2Ease of manufacture
If a fixed area dissipation port is used, then manufacturing simplicity is improved, but heat dissipation adaptability deteriorates
Solution Approach 1:
The dissipation port area is made adjustable through the sliding member mechanism. The port can transition between different opening areas (first area when closed, second area when open), providing heat dissipation adaptability while maintaining a relatively simple manufacturing process.
Solution Approach 2:
The opening area parameter of the dissipation port is made variable. By changing the opening area from a fixed value to an adjustable range, the system achieves adaptability without significantly complicating the manufacturing process.
3Temperature
If the cooling hole area is increased, then heat dissipation efficiency is improved, but the risk of impurity entry increases
Solution Approach 1:
The cooling hole area is made dynamically adjustable through the sliding member. The system can switch between a larger opening area (for heat dissipation) and a smaller opening area (for impurity protection), allowing adaptive response to different operational conditions.
Solution Approach 2:
The control module uses temperature feedback to determine when to adjust the sliding member position. When temperature exceeds a threshold, the system increases the cooling hole area; when temperature is acceptable, it reduces the area to prevent impurity entry.
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
Improves heat dissipation efficiency by dynamically adjusting the cooling hole area based on temperature, reducing the risk of impurity entry and maintaining optimal performance.
Implementation Method 1
The cooling hole is configured to allow air convection between the receiving cavity and an external environment to dissipate heat from the receiving cavity
Implementation Method 2
a linkage assembly including a rotating shaft and a gear rotatably sleeved on the rotating shaft and engaged with the rack
Implementation Method 3
the gear is configured to drive the sliding member to slide relative to the cooling hole
Data Source
AI summary
A heat dissipation device includes a housing assembly, a sliding assembly, and a linkage assembly. The housing assembly includes a receiving cavity and a cooling hole communicating with the receiving cavity. The sliding assembly includes a sliding member and a rack. The sliding member is located in the receiving cavity and slidably connected to a side of the housing assembly with the cooling hole, the rack is fixedly connected to the sliding member. The linkage assembly includes a rotating shaft and a gear. The rotating shaft and the gear are located on the same side of the sliding member, the rotating shaft is fixed on the housing assembly and extends through the gear, the gear is rotatably sleeved on the rotating shaft and is engaged with the rack to drive the sliding member to slide, thereby adjusting an area of the cooling hole blocked by the sliding member.