Modular Vehicle Lighting With Flexible Wiring And Common Diffuser

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Solution Overview

Problem

Existing vehicle lighting devices, particularly those on trams, are complex to manufacture and install due to flexibility, sealing, and robustness issues, especially when extended in length, and handling is difficult due to their length, exposing fragile components.

Innovation Solution

A modular lighting device comprising series of modules with flexible wires and a translucent diffusion part, each module having a sealed cover and electronic card, allowing flexibility and ease of assembly, with a common diffusion part for uniform light distribution.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Illumination intensity

If a lighting device is extended in length to indicate the overall shape of the vehicle, then the visibility and safety are improved, but the manufacturing complexity and handling difficulty increase

Engineering Contradiction:

ImprovevisibilityVSAvoidmanufacturing complexity

Core Design Contradiction:

Illumination intensityVSDevice complexity

Solution Approach 1:

The lighting device is divided into multiple modular units, each containing light sources, electronic cards, and sealing components. These modules can be manufactured separately and then assembled into extended configurations to match vehicle shapes, reducing individual module complexity while achieving overall length and visibility requirements

Inventive Principle:

Principle #1Segmentation

2Illumination intensity

If a lighting device is extended in length to indicate the overall shape of the vehicle, then the visibility and safety are improved, but the handling difficulty increases

Engineering Contradiction:

ImprovevisibilityVSAvoidhandling ease

Core Design Contradiction:

Illumination intensityVSEase of operation

Solution Approach 1:

The lighting device is divided into multiple modular units that can be handled individually during installation. These modules connect via flexible wires and sealing interfaces, allowing workers to manage smaller, more manageable components rather than a single long fragile device

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The modules are connected through flexible wires that allow the lighting device to adapt to curved vehicle surfaces and accommodate installation variations, making the system more flexible and easier to install on different vehicle configurations

Inventive Principle:

Principle #15Dynamics

3Illumination intensity

If a lighting device is extended in length to indicate the overall shape of the vehicle, then the visibility and safety are improved, but the robustness decreases

Engineering Contradiction:

ImprovevisibilityVSAvoidrobustness

Core Design Contradiction:

Illumination intensityVSReliability

Solution Approach 1:

The lighting device is divided into multiple modular units, each with its own sealed enclosure protecting electronic cards and light sources. This segmentation isolates potential failure points, so that damage to one module does not compromise the entire lighting system, maintaining robustness across extended lengths

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Each module includes sealed enclosures and protective structures designed to shield fragile electronic components from environmental factors and physical damage before failures can occur, ensuring reliable operation in demanding vehicle environments

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

4Ease of manufacture

If standard light sources are used instead of sealed light sources, then the manufacturing cost and efficiency are improved, but the sealing requirement increases complexity

Engineering Contradiction:

Improvemanufacturing costVSAvoidsealing complexity

Core Design Contradiction:

Ease of manufactureVSDevice complexity

Solution Approach 1:

The sealing structure is merged with the module enclosure itself, creating a unified sealed chamber that houses both the standard light sources and electronic cards. This integration eliminates the need for separate sealing mechanisms for each component, reducing overall sealing complexity while enabling the use of cheaper standard light sources

Inventive Principle:

Principle #5Merging (Combining)

Data Source

PatentEP4631825A1Lighting device for a structure such as a vehicle

Publication Date: 2025.10.15 VIGNAL SESALY

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AI summary

The lighting device (150) comprises several modules (20) each comprising: - an electronic card (30) carrying light sources (35) on its upper face; - wires (40) a first end of which is soldered under the electronic card and a second end of which can be soldered to an identical adjacent module; - a transparent cover in which the electronic card is mounted; - and a covering layer of polymer resin which covers the lower face of the electronic card and coats the first end part of the wires. The lighting device also comprises a translucent diffusion part (90) which is placed opposite the light sources and which comprises an assembly part (92) for the modules. The diffusion part is made in a single piece and placed opposite at least two adjacent modules of the lighting device.