Sealed Fiber Optic Electrical Distribution Device Thermal Management
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Solution Overview
Problem
Existing fiber optic distribution devices face challenges in providing sufficient bandwidth to subscribers due to the limitations of legacy electrical telecommunication infrastructure, particularly when fiber optic networks need to be extended closer to subscribers, requiring robust and sealed devices that can withstand extreme conditions and efficiently convert optical to electrical signals.
Innovation Solution
A sealed fiber optic/electrical distribution device with a housing that includes sealed ports for electrical and fiber optic cables, a conversion assembly with a printed circuit board and fiber optic cable tray, and heat dissipation components to maintain alignment and facilitate thermal management, ensuring reliable operation in various environments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If fiber optic network is extended closer to subscriber using FTTx technology, then bandwidth transmission capability is improved, but device complexity and environmental protection requirements increase
Solution Approach 1:
The device is divided into distinct functional modules: a sealed housing structure, an optical/electrical converter assembly, a cable management system with separate trays for fiber and electrical cables, and mounting mechanisms. This segmentation allows each component to be optimized independently while maintaining overall system performance for high bandwidth transmission.
Solution Approach 2:
The patent utilizes three-dimensional spatial arrangement within the housing, stacking the optical/electrical converter, fiber cable tray, and electrical cable tray in vertical layers. This dimensional organization maximizes the use of available space while maintaining proper signal paths and thermal management, enabling compact deployment closer to subscribers without compromising bandwidth capability.
2Productivity
If device is placed in outdoor distribution points exposed to elements, then fiber optic network can be extended closer to subscriber, but reliability decreases due to environmental exposure
Solution Approach 1:
The housing incorporates sealed enclosures with gaskets and protective coatings that form flexible yet protective barriers against environmental factors such as moisture, dust, and temperature extremes. This sealing protects the sensitive optical/electrical converter and internal components while allowing the device to be deployed in outdoor distribution points closer to subscriber premises.
Solution Approach 2:
The sealed housing creates a protected internal environment that isolates sensitive electronic and optical components from harmful external conditions including humidity, corrosion, and contaminants. This inert-like protection maintains component reliability and performance even when the device is installed in exposed outdoor locations to extend fiber coverage.
3Productivity
If optical/electrical converter is positioned close to fiber cable entry, then signal conversion efficiency is improved, but heat dissipation becomes more difficult
Solution Approach 1:
The housing design provides location-specific thermal management: the optical/electrical converter area has optimized airflow and thermal pathways for efficient heat removal from the conversion components, while maintaining close proximity to the fiber cable entry for signal efficiency. Different regions of the housing have different thermal characteristics tailored to the specific heat generation and dissipation needs of each component.
Solution Approach 2:
The patent introduces thermal management intermediaries such as heat sinks, thermal pathways, and airflow channels that mediate between the heat-generating optical/electrical converter and the external environment. These intermediary thermal management components enable efficient heat transfer without requiring the converter to be positioned far from the fiber entry point, thus maintaining both conversion efficiency and thermal performance.
4Reliability
If sealed housing is used to protect against dust and water, then device reliability is improved, but manufacturing complexity increases
Solution Approach 1:
The sealed housing is designed as an integrated enclosure with built-in sealing features such as gasket channels, ribbed sealing surfaces, and snap-fit closures that are molded or formed as part of the housing structure itself. This segmentation into modular sealed units simplifies manufacturing compared to assembling multiple separate sealing components, while maintaining IP-rated protection against dust and water ingress.
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 enables reliable optical/electrical signal conversion and heat dissipation, addressing the need for robust devices that can operate effectively in diverse conditions, thereby enhancing bandwidth delivery and meeting current and future subscriber demands.
Implementation Method 1
The conversion assembly comprises a printed circuit board (PCB) comprising an optical/electrical converter
Implementation Method 2
The electrical cable port is sealed to prevent ingress of dust and water into the interior volume. The fiber optic cable port is sealed to prevent ingress of dust and water into the interior volume.
Implementation Method 3
heat dissipation components to maintain alignment and facilitate thermal management
Data Source
AI summary
A fiber optic/electrical distribution device (200) having a housing (202) defining an interior volume is disclosed. An electrical cable port (214) extends into the interior volume and is accessible externally from the housing, wherein the electrical cable port (214) is sealed to prevent ingress of dust and water into the interior volume. A fiber optic cable port (216) extends into the interior volume and is accessible externally from the housing. The fiber optic cable port (216) is sealed to prevent ingress of dust and water into the interior volume. A conversion assembly (238) having a printed circuit board (240) and fiber optic cable tray (242) supported in stacked alignment with the printed circuit board (240) is positioned in the interior volume. The printed circuit board (240) has an optical/electrical converter and an electrical power circuit. A defined spacing is maintained between the printed circuit board (240) and the fiber optic cable tray (242), and the printed circuit board (240) and the fiber optic cable tray (242) are maintained in lateral alignment.