Head-Mounted Wearable Enclosure Thermal Layer for Heat Spreading
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Wearable computing devices face challenges in effectively dissipating heat generated by electronic components due to constrained form factors and limited internal installation volume, leading to operational degradation, user discomfort, and reduced functionality.
Innovation Solution
Incorporating a thin-walled enclosure with a contoured intermediate layer having varying thermal conductivity properties to manage heat dissipation within the device, using materials like polycarbonate, resin, and aluminum to create non-homogeneous thermal paths for efficient heat spreading and dissipation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If traditional heat dissipation systems are installed in head mounted wearable devices, then heat dissipation capability is improved, but device volume and form factor are worsened
Solution Approach 1:
The patent combines the heat dissipation function with the device housing structure itself. The housing is designed with thermally conductive material and internal geometry that serves dual purposes: structural support and heat transfer pathway. This integration eliminates the need for separate, bulky heat dissipation components while maintaining effective thermal management within the constrained wearable form factor.
Solution Approach 2:
The patent implements varying thermal conductivity properties at different locations within the housing. Specific regions are designed with enhanced thermal conductivity to create optimized heat flow paths from heat-generating components to dissipation areas. This localized thermal property adjustment enables effective heat management without requiring the entire housing to be made of high-conductivity material, thus preserving volume constraints.
2Volume of moving object
If electronic components are densely arranged to reduce device size, then device compactness is improved, but heat dissipation efficiency is worsened
Solution Approach 1:
The patent transitions from two-dimensional planar heat dissipation to three-dimensional volumetric heat management. The housing incorporates internal channels, cavities, and layered structures that create multi-dimensional heat flow pathways. This allows heat to be dissipated through multiple spatial dimensions simultaneously, maintaining efficiency even when electronic components are densely arranged in limited volume.
Solution Approach 2:
The patent embeds heat dissipation structures within the housing walls and internal cavities. Thermal management features such as heat sinks, heat pipes, or conductive channels are nested within the housing structure itself, utilizing the housing volume for dual purposes: structural enclosure and thermal management. This nesting approach preserves external form factor while providing adequate heat dissipation capacity for densely packed components.
3Volume of moving object
If thin-walled enclosure is used to maintain form factor, then device portability is improved, but structural strength and heat dissipation are worsened
Solution Approach 1:
The patent employs composite material construction for the housing, combining materials with different properties to achieve both mechanical strength and thermal conductivity. The housing may incorporate layers or regions of high-strength materials for structural integrity and high-conductivity materials for heat dissipation. This composite approach enables thin-walled construction that simultaneously satisfies portability requirements, maintains structural strength, and provides adequate thermal management.
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
Maintains internal component temperatures within operating ranges, reduces user discomfort, and extends continuous operation time by flattening hot spots and optimizing thermal dissipation while preserving the device's form factor and functionality.
Implementation Method 1
The intermediate layer may have relatively higher thermal conductivity properties than the inner and outer layers, such that the intermediate layer defines a thermal path for the spreading and/or dissipation of heat generated by the electronic components installed within the thin walled enclosure
Data Source
Figure 1A
Figure 1B
Figure 1C
AI summary
Systems and methods for thermal management in wearable computing devices are provided. Thermal management strategies included in the wearable computing device provide for dissipation of heat generated by electronic components installed within enclosures, or housings, of the wearable computing devices to maintain operability of the electronic components, maintain functionality and/or operability of the wearable computing device, and maintain user comfort while the wearable computing device is worn. The enclosure includes a multilayered stack of materials including a thermal layer embedded within insulating layers. The thermal layer may be shaped so as to direct the spreading of heat in a desired direction, to maintain surface touch temperatures within allowable ranges, and maintain internal enclosure temperatures within operating ranges of the electronic components.