Adaptable Sunshield for Fan-less 5G Components
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Solution Overview
Problem
Existing sunshields for fan-less 5G components either block external airflow, leading to increased temperatures due to solar heat loading through venting holes when there is little to no airflow, or fail to provide adequate cooling when airflow is present, as they block external air flow from dissipating thermal emissions.
Innovation Solution
A sunshield with moveable shutters that are biased to a closed position by a mechanism such as a torsion spring, extension spring, or counterweight, allowing air flow when external airflow exceeds a predetermined velocity, thereby blocking solar heat in still air conditions and enabling cooling in non-still air conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a sunshield is added to protect the component from sunlight, then solar heat loading is reduced, but external air flow required for dissipating thermal emission is blocked
Solution Approach 1:
The sunshield incorporates movable shutters that can dynamically adjust between open and closed positions based on environmental conditions. The shutters are biased to a closed position by a spring mechanism but can be forced open by external air flow, allowing the system to adapt between solar protection mode and cooling mode automatically
Solution Approach 2:
The system changes the flow characteristics parameter of the sunshield by moving shutters between closed and open positions. This allows the sunshield to transition from a closed configuration that blocks solar radiation to an open configuration that permits cooling air flow when wind conditions are favorable
2Temperature
If venting holes are provided in the sunshield to allow air flow, then cooling is improved, but the chassis is exposed to sunlight through the venting holes
Solution Approach 1:
Instead of fixed venting holes, the invention uses dynamic shutters that can open to reveal vents only when external air flow is sufficient for cooling. When shutters are closed, they block both solar radiation and prevent direct exposure through vents, eliminating the contradiction between cooling and solar protection
3Object-affected harmful factors
If the shutters are kept closed to block sunlight, then solar heat loading is prevented, but external air flow for cooling cannot pass through
Solution Approach 1:
The system uses external air flow as feedback to automatically control shutter position. When wind blows against the shutters with sufficient force, it overcomes the spring bias and forces the shutters open, allowing cooling air flow. When wind stops, the spring mechanism automatically closes the shutters to block solar radiation, creating a self-regulating system
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 adaptable sunshield effectively manages solar heat loading and facilitates cooling by rotating shutters to allow airflow only when necessary, maintaining optimal temperature in various environmental conditions, thus enhancing the performance and reliability of fan-less 5G components.
Implementation Method 1
A biasing mechanism provides force to bias the shutter in the closed position. The force is overcome by a predetermined level of external air flow on the shutter to rotate the shutter to the open position
Implementation Method 2
A biasing mechanism provides force to bias the shutter in the closed position. The force is overcome by a predetermined level of external air flow on the shutter to rotate the shutter to the open position
Implementation Method 3
The force is overcome by a predetermined level of external air flow on the shutter to rotate the shutter to the open position
Implementation Method 4
The chassis is usually designed as a heat sink to cool the electronic devices in such components
Implementation Method 5
allow external air flow from wind that is required for dissipating thermal emission from the components in the chassis through the fins
Data Source
AI summary
A sunshield to protect an equipment housing from solar heat and allow cooling from external air flow is disclosed. The sunshield includes a main plate configured to be positioned to cover a side of the equipment housing. A vent in the main plate allows air flow through the main plate to the equipment housing. A shutter is rotatable between an open position allowing air flow through the vent, and a closed position blocking air flow through the vent. A biasing mechanism provides force to bias the shutter in the closed position. The force is overcome by a predetermined level of external air flow on the shutter to rotate the shutter to the open position.