Combined LED Anti-Collision and Navigation Light Unit

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Solution Overview

Problem

Aircraft exterior lighting systems require multiple light units that can be cumbersome and inefficient, with separate anti-collision and navigation lights consuming more power and space, and existing solutions do not adequately address design constraints and aerodynamic considerations.

Innovation Solution

A combined anti-collision and navigation light unit utilizing a single LED light source with a lens cover that adjusts light intensity distribution to operate in both navigation and anti-collision modes, reducing power consumption and design constraints by integrating both functions into a single unit.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If separate anti-collision and navigation light units are used, then each light unit can be optimized for its specific function, but the overall power consumption and wiring complexity increase

Engineering Contradiction:
Improvefunctional optimizationVSAvoidpower consumption
Core Design Contradiction:
ReliabilityVSUse of energy by moving object

Solution Approach 1:

The patent combines separate anti-collision and navigation light units into a single integrated light unit. The housing contains both navigation lights (first and second navigation lights) and anti-collision lights (first and second anti-collision lights) that share common mounting structures, power connections, and control systems. This merging reduces the number of separate power supplies and wiring harnesses required, thereby reducing overall power consumption and wiring complexity while maintaining functional optimization through dedicated light elements for each function.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The integrated light unit serves multiple functions simultaneously: it provides navigation lighting for indicating aircraft position and direction, anti-collision lighting for enhancing visibility and preventing collisions, and structural mounting functions. The single light unit housing and mounting structure support multiple light elements that perform different functions, making the system universal and multi-functional rather than requiring separate specialized units for each function.

Inventive Principle:
Principle #6Universality (Multi-functionality)

2Illumination intensity

If multiple separate light units are installed, then each light unit can be positioned for optimal visibility, but the space required on the aircraft exterior increases

Engineering Contradiction:
ImprovevisibilityVSAvoidspace usage
Core Design Contradiction:
Illumination intensityVSArea of stationary object

Solution Approach 1:

The patent merges multiple light units into a single integrated assembly where navigation lights and anti-collision lights are housed together in one mounting structure. This consolidation reduces the total exterior space occupied on the aircraft while maintaining optimal positioning for visibility. The integrated unit can be mounted at strategic locations such as wingtips or fuselage ends where both navigation and anti-collision functions are effectively served.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The design nests multiple light elements within a single housing structure. The navigation lights and anti-collision lights are arranged in a nested or compact configuration within the same mounting envelope, allowing one light element to be positioned within or adjacent to another without increasing overall footprint. This nesting approach maximizes space utilization while maintaining visibility requirements.

Inventive Principle:
Principle #7Nested doll (Nesting)

3Reliability

If separate light units are used for anti-collision and navigation functions, then each unit can have dedicated optical elements, but the wiring and power supply requirements become more complex

Engineering Contradiction:
Improvefunctional performanceVSAvoidwiring complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent combines separate light units into a single integrated unit where multiple light elements (navigation lights and anti-collision lights) share common mounting structures, electrical connections, and control systems. This merging reduces wiring complexity by eliminating redundant power supplies and connection harnesses that would be required for separate units, while maintaining functional performance through dedicated optical elements for each light function.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The integrated light unit employs universal mounting structures and power connection systems that serve multiple light elements simultaneously. A single power supply and control system manages both navigation and anti-collision lighting functions, reducing overall system complexity while maintaining dedicated optical pathways and elements for each function to ensure reliable performance.

Inventive Principle:
Principle #6Universality (Multi-functionality)

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 allows for reduced power consumption and space usage while meeting regulatory light intensity requirements for both navigation and anti-collision modes, enhancing aircraft design efficiency and compliance.

Implementation Method 1

a lens cover with a shape that is configured to transform the source-side light intensity distribution into an output light intensity distribution of the combined anti-collision and navigation light unit

Methodology Applied
Scientific EffectRefraction: Refraction

Data Source

PatentEP2923951B1Combined LED anti-collision and navigation light unit and method
Publication Date: 2017.09.06 GOODRICH LIGHTING SYST GMBH
  • EP2923951B1 patent drawingFigure 1~2
  • EP2923951B1 patent drawingFigure 3a~3b
  • EP2923951B1 patent drawingFigure 3c~3d

AI summary

A combined anti-collision and navigation light unit (2) for an aircraft includes a light source (4), having at least one LED and having a source-side light intensity distribution, and a lens cover (6) with a shape that is configured to transform the source-side light intensity distribution into an output light intensity distribution of the combined anti-collision and navigation light unit (2). The combined anti-collision and navigation light unit (2) is configured to have at least two modes of operation, which include a navigation mode of operation, wherein the light source (4) continuously outputs light of a first intensity, and an anti-collision mode of operation, wherein the light source (4) outputs a sequence of light pulses, with the light pulses having a second light intensity, with a ratio between the second light intensity and the first light intensity having a value of at least 15.