Circuit Board Edge Indicator Light Integration
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Solution Overview
Problem
Conventional network device indicator lights require mechanical infrastructure that interferes with other components and reduces available space, complicating circuit board design and impacting signal integrity and airflow.
Innovation Solution
Reverse-mounted LEDs and lightpipes are integrated into the circuit board edge, eliminating the need for shrouds and allowing additional airflow by redirecting light through optical technology, thus simplifying the design and improving thermal management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If indicator lights are placed on the front panel with mechanical infrastructure, then indicator lights can be implemented, but valuable circuit board area is used and space for other components is reduced
Solution Approach 1:
The patent relocates indicator lights from the traditional front panel (2D surface) to the circuit board edge (linear dimension), utilizing the profile space that was previously unused. This dimensional shift allows indicator lights to be positioned along the perimeter of the circuit board rather than occupying valuable central area, effectively moving the solution from a surface-based approach to an edge-based approach that leverages available profile space.
Solution Approach 2:
The patent integrates indicator lights within the circuit board profile structure itself, nesting the light-emitting components and their optical guides within the existing board geometry. The circuit board profile serves as both the structural support and the housing for the indicator lights, eliminating the need for separate mechanical infrastructure and reducing overall space requirements.
2Reliability
If mechanical infrastructure is used for indicator lights, then lights can be mounted, but design complexity increases and signal integrity is impacted
Solution Approach 1:
The patent extracts the mechanical infrastructure (shrouds, mounting brackets, separate housing) from the indicator light implementation, retaining only the essential light-emitting diodes and their optical guides. By removing the bulky mechanical support structures, the design becomes simpler, the circuit board layout is less constrained, and signal traces can be routed more directly without navigating around complex mechanical features.
Solution Approach 2:
The circuit board profile serves multiple functions: it provides structural support for the device, guides airflow for thermal management, and houses the indicator lights. This multi-functional use of the profile space eliminates the need for separate mechanical infrastructure dedicated solely to mounting indicator lights, reducing overall design complexity.
3Reliability
If front panel space is used for indicator lights, then indicator lights are visible, but space for airflow openings is reduced
Solution Approach 1:
The patent moves indicator lights from the front panel surface to the circuit board edge profile, freeing up the front panel area for airflow openings. This repositioning allows the front panel to be optimized for thermal management with larger opening areas while the indicator lights remain visible from the device perimeter, effectively separating the visibility function from the thermal management function.
Solution Approach 2:
The patent applies different functional qualities to different locations: the front panel is optimized for airflow and cooling with large openings, while the circuit board edge profile is utilized for indicator lights. This local optimization allows each area to serve its primary function effectively without compromising the other.
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 simplifies circuit board design, reduces signal trace lengths, and enhances airflow and thermal management by utilizing the circuit board as a shroud for indicator lights, freeing up space for critical components and improved cooling.
Implementation Method 1
light emitting diodes (LEDs)
Implementation Method 2
through the use of optical technology (e.g., mirrors), they redirect the light
Data Source
AI summary
Embodiments described herein relate to a system for positioning indicator lights of a network device. The system may include a circuit board, which may include a circuit board edge positioned behind a front panel of the network device, two surfaces; and a side of the circuit board edge positioned between the two surfaces. The system may also include a hole through the circuit board near the circuit board edge, a cutout extending from a portion of the hole to the side of the circuit board edge, a LED coupled to the surface of the circuit board and adapted to emit light into the hole, and a lightpipe disposed in the hole to receive light emitted from the LED into a first end of the lightpipe. The lightpipe may direct the light from a second end of the lightpipe toward an opening in the front panel of the network device.