Optical Engine Module External Air Channel Heat Dissipation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing projection devices face heat dissipation issues due to energy loss and temperature rise within the optical engine cavity, which affects the picture quality, despite the use of fans for forced convection, as the air flow retains heat in the cavity.
Innovation Solution
An optical engine module with a housing, prism component, light valve, air guiding channel, and heat-dissipating modules, including fans and heat-dissipating fins, is designed to create a circulating air flow and enhance heat dissipation by using a baffle and heat conduction structures to direct airflow effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a fan is added for forced convection, then heat dissipation capability is improved, but the air flow retains heat in the optical engine cavity causing temperature to rise
Solution Approach 1:
The patent extracts the heat dissipation function from the internal cavity by introducing an external air guiding channel that leads outside the housing. The fan draws external air through this channel to cool the optical components, and the heated air is exhausted outside the housing, removing heat from the system rather than recirculating it within the cavity.
Solution Approach 2:
The patent introduces an intermediary air guiding channel that mediates between the internal optical engine cavity and the external environment. This channel serves as a pathway for heat transfer, allowing thermal energy to be transported from the enclosed cavity to the outside atmosphere, thereby resolving the heat retention problem.
2Device complexity
If natural convection is used for heat dissipation, then device complexity is reduced, but heat dissipation effectiveness is insufficient
Solution Approach 1:
The patent employs pneumatic principles by using a fan to generate forced air flow through the optical engine cavity. This active fluid dynamics approach replaces passive natural convection, significantly enhancing heat dissipation effectiveness by creating controlled air circulation that actively removes heat from the cavity.
3Temperature
If heat dissipation structures are added, then temperature control is improved, but device complexity increases
Solution Approach 1:
The patent designs the air guiding channel to serve multiple functions: it guides cooling air flow, provides structural support, and acts as a heat transfer pathway. The fan component also serves dual purposes by driving air flow through the cavity and exhausting heated air outside. This multi-functionality reduces the need for separate dedicated heat dissipation 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
This configuration effectively reduces the temperature inside the housing, improving heat dissipation and resulting in better projection quality by efficiently managing airflow and heat exchange.
Implementation Method 1
a fan is also added in the optical engine cavity for forced convection
Implementation Method 2
The first heat-dissipating module includes a first heat-dissipating fin disposed in the air guiding channel, and a second heat-dissipating fin disposed outside the air guiding channel
Implementation Method 3
the heat of the off-light heat sink will be retained in the optical engine cavity
Data Source
AI summary
Disclosed are an optical engine module and a projection device. The optical engine module includes a housing, a prism component, a light valve, an air guiding channel, a first fan, and a first heat-dissipating module. The housing has a first opening and a second opening. The prism component is disposed in the housing. The light valve is disposed in the housing. The air guiding channel is disposed outside the housing and communicates with the first opening and the second opening of the housing. The first fan is disposed in the air guiding channel. The first heat-dissipating module includes a first heat-dissipating fin disposed in the air guiding channel, and a second heat-dissipating fin disposed outside the air guiding channel.