Aircraft Lamp Control Substrate Shielding and Maintenance
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Solution Overview
Problem
Aircraft lamps face challenges in maintaining a good driving state of light sources due to noise interference and require improved maintainability of control substrates, particularly in scenarios where control substrate issues arise.
Innovation Solution
The aircraft lamp design incorporates a shielding plate to enclose and shield the control substrate within a unit accommodation portion, allowing for easy exchange and noise reduction, while using a heat-dissipating attaching plate to manage heat generated by electronic components, and employing multiple light source units with distinct control substrates and lenses to optimize light irradiation directions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the control substrate is integrated into the lamp housing, then the structure is more compact, but the maintainability and ease of replacement deteriorate
Solution Approach 1:
The control substrate is separated from the lamp housing and placed in a dedicated control substrate accommodation portion, allowing independent access and replacement without disassembling the entire lamp structure. This segmentation enables easy maintenance while keeping the overall structure integrated.
Solution Approach 2:
The control substrate accommodation portion is pre-configured with insertion/removal ports and positioning structures during manufacturing. This preliminary preparation allows the control substrate to be quickly installed or replaced without requiring complex assembly procedures or specialized tools.
2Temperature
If the control substrate is exposed, then the heat dissipation is improved, but the noise interference to instruments deteriorates
Solution Approach 1:
A shielding plate is introduced as an intermediary element between the control substrate and the instrument space. The shielding plate has a heat-dissipating structure that allows thermal energy to pass through while blocking electromagnetic noise, thus mediating between heat dissipation requirements and noise interference prevention.
Solution Approach 2:
The shielding plate is designed with different local properties: it has heat-dissipating structures (such as heat sinks or thermal conduits) in areas facing the control substrate, while maintaining electromagnetic shielding properties in areas facing the instrument space. This local differentiation allows simultaneous achievement of heat dissipation and noise protection.
3Ease of manufacture
If the insertion/removal port is left open, then the assembly is simpler, but the noise shielding effectiveness deteriorates
Solution Approach 1:
The shielding plate is merged with the control substrate accommodation portion, forming an integrated noise barrier that is built into the housing structure. This merging provides effective noise shielding without requiring separate, complex assembly steps or additional 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 ensures a stable operation of aircraft instruments, enhances maintainability by simplifying control substrate replacement, and provides efficient and flexible lighting options for various aircraft configurations.
Implementation Method 1
a shielding plate that shields noise generated in the control substrate
Implementation Method 2
employing multiple light source units with distinct control substrates and lenses to optimize light irradiation directions
Data Source
AI summary
An aircraft lamp includes: a lamp outer housing configured by a lamp housing having an opening and a cover attached to the lamp housing in a state where the opening is closed, wherein an internal space is formed as an arrangement space; a light source unit arranged in the arrangement space and having a light source; and a control unit including a control substrate that controls an ON/OFF of the light source, and a shielding plate that shields noise generated in the control substrate. The lamp housing is provided with a unit accommodation portion having a concave shape and an insertion/removal port. The control substrate is configured to be accommodated in and removed from the unit accommodation portion via the insertion/removal port. At least a part of the insertion/removal port is closed by the shielding plate in a state where the control substrate is accommodated in the unit accommodation portion.