Luggage Dimension Check Device with Perpendicular Light Sources

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Solution Overview

Problem

Existing devices for checking luggage dimensions are often complex, heavy, and inflexible, requiring multiple mounting frames to meet varying airline requirements for dimensions and weight, and lack simplicity and adaptability.

Innovation Solution

A device with a display system of equidistantly arranged multicolored light sources in three perpendicular directions to indicate compliance with dimensions and weight requirements, allowing easy adaptation to different airline standards via barcode scanning or manual input, and including a scale for weight measurement.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If multiple mounting frames are used to meet varying airline requirements, then the device can accommodate different dimension and weight specifications, but the device complexity and portability deteriorate

Engineering Contradiction:
Improveadaptability to different airline requirementsVSAvoiddevice complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent implements a single mounting frame equipped with adjustable lighting means that can be reconfigured to meet different airline requirements. The lighting means includes multiple light sources arranged in three perpendicular directions that can be independently adjusted to indicate different dimension limits, allowing one frame to serve multiple airline specifications rather than requiring separate frames for each airline.

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

Solution Approach 2:

The lighting means are made adjustable and reconfigurable through electronic control, allowing the dimension indicators to be dynamically changed based on the airline being served. The light sources can be positioned at different locations and activated in different patterns to reflect varying size and weight requirements, transforming a static frame into a dynamically adaptable measurement system.

Inventive Principle:
Principle #15Dynamics

2Extent of automation

If a large and heavy device with complex structure is used to automatically determine weight and dimensions, then measurement accuracy and automation improve, but portability and simplicity deteriorate

Engineering Contradiction:
Improveautomatic determination of weight and dimensionsVSAvoiddevice weight
Core Design Contradiction:
Extent of automationVSWeight of moving object

Solution Approach 1:

The patent extracts the essential measurement function from complex automated systems and implements it through a simple scale integrated into the mounting frame. Rather than using heavy sensors and computer terminals to automatically determine dimensions and weight, the invention uses the frame structure itself as the measurement reference with lighting means to indicate compliance, removing unnecessary complexity while maintaining automated indication.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The patent replaces complex electronic measurement and display systems with a mechanical/optical indication system. Instead of using computers, displays, and printed outputs to show compliance, the invention uses strategically positioned light sources that visually indicate whether luggage meets requirements, substituting mechanical and optical elements for heavy electronic systems.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

3Loss of information

If displays or printed outputs are used to show compliance information, then information precision improves, but device complexity and portability deteriorate

Engineering Contradiction:
Improvecompliance information deliveryVSAvoiddevice complexity
Core Design Contradiction:
Loss of informationVSDevice complexity

Solution Approach 1:

The patent uses color-coded light sources (typically green for compliance, red for non-compliance) to convey dimension and weight compliance information. The lighting means are arranged to illuminate in specific patterns that immediately communicate whether luggage meets airline requirements, providing clear visual feedback without requiring text displays or printed information.

Inventive Principle:
Principle #32Color changes

Solution Approach 2:

The patent substitutes electronic displays and printing mechanisms with an optical indication system using light sources. The lighting means directly indicate compliance status through their illumination patterns and positions, eliminating the need for screens, printers, or other complex information display devices while maintaining effective communication of measurement results.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

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

Enables immediate visual assessment of luggage compliance without the need for displays or frames, ensuring flexibility across multiple airline requirements and easy portability, with the ability to indicate permissible and non-permissible dimensions and weight limits through simple, intuitive lighting cues.

Implementation Method 1

the display means have a plurality of light sources arranged next to one another in three mutually perpendicular directions, by means of which a user of the device can be signaled whether the piece of luggage meets the requirements

Methodology Applied
Scientific EffectLight emission: Light Emitting Diode

Data Source

PatentEP3620391B1Device for checking the dimensions of luggage for aircraft
Publication Date: 2021.10.06 VIA GUIDE
  • EP3620391B1 patent drawingFigure 1
  • EP3620391B1 patent drawingFigure 2~5
  • EP3620391B1 patent drawingFigure 6

AI summary

Device (1) for checking the dimensions of a piece of luggage, in particular a piece of hand luggage, for air travel, comprising display means which can clarify to what extent the dimensions, in particular also the weight, of the piece of hand luggage meet specified requirements, wherein the display means have a plurality of light sources (11, 12, 13) arranged next to each other in three mutually perpendicular directions.