Aircraft Lamp Segmentation for Vibration Isolation
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Solution Overview
Problem
Aircraft lamps using semiconductor light emitting elements face challenges in being small and lightweight due to vibration and environmental sensitivity, requiring increased inner volume which complicates manufacturing and limits their application in ice inspection and logo lamps with limited external dimensions.
Innovation Solution
The lamp design includes a power supply control unit with a casing outside the lamp housing, housing the control circuit structure and power supply transformer, and a light source unit with a main and sub lens configuration to achieve wide illumination, allowing for a compact and lightweight aircraft lamp.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the control circuit board is incorporated in the lamp housing together with the LED, then the structure is simplified, but vibration or impact is transmitted to the control circuit board causing damage
Solution Approach 1:
The patent divides the lamp system into two separate units: a lamp housing containing the LED and optical components, and a separate power supply control unit containing the control circuit board. This segmentation isolates the sensitive control circuit from vibration and impact in the lamp housing, protecting it while maintaining structural simplicity through modular design.
2Device complexity
If the control circuit board is incorporated in the lamp housing, then integration is improved, but the control circuit board is easily affected by external environmental changes
Solution Approach 1:
The patent separates the control circuit board into an independent power supply control unit with its own casing, isolating it from external environmental factors such as temperature, humidity, and pressure variations that affect the lamp housing. This segmentation protects the control circuit while maintaining functional integration through electrical connections.
3Reliability
If the inner volume of the lamp housing is increased to accommodate buffer members, then protection is improved, but mechanical strength requirements increase requiring thick metal material
Solution Approach 1:
The patent moves the control circuit board and its protection requirements outside the lamp housing into a separate power supply control unit. This eliminates the need to increase the lamp housing's inner volume for buffer members, maintaining the lamp housing's compact size and reducing mechanical strength requirements for thin-walled constructions.
Solution Approach 2:
The patent extracts the control circuit board from the lamp housing into a separate unit, removing the need for the lamp housing to provide structural protection through increased volume or thickness. The lamp housing can remain lightweight with thin walls while the separate power supply control unit provides appropriate protection for the control circuit.
4Volume of stationary object
If the inner volume of the lamp housing is increased, then space for buffer members is improved, but deep drawing processing becomes difficult
Solution Approach 1:
The patent segments the lamp system into a compact lamp housing and a separate power supply control unit. This allows the lamp housing to maintain a small inner volume suitable for deep drawing processing while the control circuit board is housed separately, avoiding manufacturing complexity.
5Area of stationary object
If a reflector is installed to illuminate wide region, then illumination coverage is improved, but the lamp housing shape and dimensions become larger
Solution Approach 1:
The patent extracts the power supply control unit from the lamp housing, allowing the lamp housing to be minimized in size for specific illumination applications. The lamp housing can be compact without a reflector while the separate control unit handles power management, enabling smaller overall dimensions suitable for ice inspection and logo lamps.
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 design enables a small and lightweight aircraft lamp that can emit light over a wide area using semiconductor elements, enhancing applicability to aircraft while reducing mechanical strength requirements and vulnerability to environmental factors.
Implementation Method 1
the high voltage AC current is stepped down to a voltage suitable for the aircraft lamp by using a power supply transformer for transformation
Implementation Method 2
a control circuit including a converter for rectifying an AC current into a DC current
Implementation Method 3
a lamp using a light emitting diode (LED) as a light source
Data Source
AI summary
An aircraft lamp includes a light source unit, a lamp housing that houses the light source unit, and a power supply control unit that has a casing and includes a control circuit structure configured to control light emission of the light source unit. The control circuit structure is housed in the casing. The casing is disposed outside the lamp housing.