Wearable Projection Device With Extended Conductive Heat Path
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Solution Overview
Problem
Wearable projection devices face limitations in heat dissipation capability due to the absence of active cooling elements, which are not suitable for direct contact with the human body, leading to reduced performance and user discomfort.
Innovation Solution
Incorporating a thermally conductive plate that extends from the display portion to the support portion, along with heat insulation structures and temperature sensing elements, to enhance heat dissipation and maintain display quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a passive heat dissipation element is used, then the device can be worn on the human body without vibrations and noise, but the heat dissipation capability is significantly limited
Solution Approach 1:
The thermally conductive plate extends from the display portion through the support portion to the battery portion, utilizing the third dimension (depth/thickness of the device) to create a extended heat dissipation pathway. This dimensional extension allows heat to be conducted away from the display portion through multiple layers and components, significantly increasing the effective heat dissipation area without adding external active cooling elements that would compromise wearability.
Solution Approach 2:
The thermally conductive plate serves multiple functions simultaneously: it conducts heat away from the display portion, provides structural support for the display assembly, and acts as a mounting platform for the battery portion. This multi-functionality allows the heat dissipation function to be integrated into existing structural components rather than adding separate dedicated heat dissipation elements.
2Temperature
If the thermally conductive plate area is increased, then the heat dissipation area is increased, but the device structure becomes more complex
Solution Approach 1:
The thermally conductive plate is designed to perform multiple functions: heat conduction from the display portion, structural support for the display assembly, and serving as a mounting platform for the battery portion. By integrating these functions into a single component, the patent avoids the need for separate heat dissipation plates, support structures, and mounting brackets that would otherwise be required, thereby limiting the increase in structural complexity.
Solution Approach 2:
The patent merges the heat dissipation function with the structural support function and the battery mounting function into a single integrated thermally conductive plate. This consolidation reduces the total number of separate components needed in the device assembly, thereby limiting the increase in structural complexity while achieving extended heat dissipation area.
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 significantly improves heat dissipation and display quality by increasing the heat dissipation area and preventing excessive temperature buildup, ensuring user comfort.
Implementation Method 1
the first thermally conductive plate is connected to the light source and extends from the display portion to the support portion
Data Source
AI summary
A wearable projection device includes a main body, an optical-mechanical module, a waveguide module, a first thermally conductive plate, and a control module. The main body has a display portion and a support portion connected to each other. The optical-mechanical module is disposed at the display portion and includes at least one light source. The waveguide module is disposed at the display portion. The first thermally conductive plate is connected to the light source and extends from the display portion to the support portion. The control module is electrically connected to the optical-mechanical module, so that an image generated by the optical-mechanical module is displayed on the display portion by the waveguide module. The wearable projection device is able to increase a heat dissipation area through the first thermally conductive plate, so that the wearable projection device may achieve an improved heat dissipation effect and have an improved display quality.