Electronics box for in-flight entertainment system
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Solution Overview
Problem
Conventional electronics boxes in commercial passenger vehicles face challenges with complex designs that make maintenance and upgrades difficult due to inaccessible connections, leading to issues with dust and moisture intrusion, which can deteriorate electronic components and limit installation options.
Innovation Solution
The design of a modular electronics box with separate processor and power supply modules, featuring a sealed structure with a cooling system external to the main enclosure, utilizing a fan and heat dissipation elements to manage heat efficiently while preventing dust and moisture ingress, and allowing for easy access and replacement of components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of repair
If conventional electronics boxes use integrated designs with accessible connections for maintenance, then ease of repair is improved, but reliability deteriorates due to dust and moisture intrusion
Solution Approach 1:
The electronics box is divided into separate modules (processor module, power supply module) that can be independently accessed and replaced. The sealed enclosure protects internal components while modular sections allow maintenance without compromising the overall seal integrity.
Solution Approach 2:
A sealed enclosure acts as an intermediary barrier between the electronic components and the external environment (dust and moisture). This seal protects components while modular design elements provide controlled access points for maintenance.
2Reliability
If conventional electronics boxes use sealed enclosures to prevent dust and moisture intrusion, then reliability is improved, but ease of repair deteriorates due to inaccessible connections
Solution Approach 1:
The sealed enclosure is segmented into modular sections (processor module with circuit board, power supply module) that can be independently accessed. This allows maintenance personnel to access specific components without compromising the overall seal or requiring complete disassembly.
Solution Approach 2:
The sealed enclosure incorporates dynamic access mechanisms that allow temporary opening of specific modular sections for maintenance while maintaining the sealed integrity of the overall system. This enables adaptable access based on maintenance needs.
3Device complexity
If electronics boxes install cooling systems internal to the enclosure, then device complexity is reduced, but temperature control deteriorates due to heat generation from electronic components
Solution Approach 1:
The cooling system is extracted from the internal enclosure space and positioned externally. The processor module generates heat that is conducted to external heat dissipation elements (heat sinks, cooling fins) mounted on the exterior of the sealed enclosure, allowing efficient heat rejection without occupying internal component space.
Solution Approach 2:
The cooling function is moved from the internal three-dimensional space to the external surface area of the enclosure. Heat dissipation elements are mounted on the exterior surfaces, utilizing the external dimension for thermal management without interfering with internal component arrangement.
4Ease of repair
If electronics boxes use modular designs for easy maintenance, then ease of repair is improved, but device complexity increases due to multiple separate modules
Solution Approach 1:
The electronics box is segmented into standardized modular sections (processor module, power supply module) with uniform mounting interfaces and connection protocols. This segmentation enables easy replacement of individual modules while the standardization minimizes the overall complexity of the modular architecture.
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 modular design facilitates easier maintenance, reduces the risk of component damage, and allows for more flexible installation options, enhancing the reliability and passenger experience by maintaining a compact and efficient cooling system within the limited space of commercial passenger vehicles.
Implementation Method 1
a fan introducing air from outside into the cooling structure, the air creating an air passage that is external to the sealed enclosure and extending along the surface of the sealed enclosure
Implementation Method 2
one or more heat dissipation elements disposed in the air passage and configured to dissipate heat generated by the electronic components
Data Source
Figure 1A~1B
Figure 2
Figure 3A~3B
AI summary
Techniques are related to an apparatus for an electronics box for an in-flight entertainment system. The electronics box comprises: a first module including a first group of electronic components for the in-flight entertainment system and having a housing accommodating a first board on which the first group of electronic components are disposed; and a second module detachably placed over the first module and having a second board on which a second group of electronic components for the in-flight entertainment system are disposed, the second board covered by a frame that forms a sealed enclosure with the housing, and wherein the first group of electronic components and the second group of electronic components are configured to provide power or data to at least one of the in-flight entertainment system that is located in a commercial passenger vehicle.