Vehicle Shell Assembly with Switchable Lighting Unit

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Solution Overview

Problem

Existing vehicle shell assemblies lack the ability to vary their optical appearance, which limits their design flexibility and aesthetic appeal.

Innovation Solution

A vehicle shell assembly featuring a plate-like plastic body with an integrated lighting unit that can be switched between active and passive states, utilizing a translucent material and an opaque light-impermeable coating with gaps to create a visible light pattern when illuminated, allowing for customizable light effects and a 'black-panel look'.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a plate-like plastic body with opaque coating is used to create a black-panel look, then the aesthetic appearance is improved, but the optical appearance becomes fixed and non-variable

Engineering Contradiction:
Improveoptical appearance variabilityVSAvoidstructure complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The plastic body incorporates a lighting unit that can be switched between active and passive states, dynamically changing the optical appearance from a uniform black-panel look to a variable light pattern display, enabling adaptability without requiring multiple static components

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The translucent plastic body allows light to pass through and create visible light patterns when illuminated, effectively changing the optical appearance from opaque black to translucent with defined light patterns, achieving versatility in optical characteristics

Inventive Principle:
Principle #32Color changes

2Illumination intensity

If a translucent plastic material is used to allow light patterns to be visible, then optical variability is improved, but the concealment of the opaque coating in the passive state deteriorates

Engineering Contradiction:
Improvelight pattern visibilityVSAvoidcoating visibility in passive state
Core Design Contradiction:
Illumination intensityVSObject-affected harmful factors

Solution Approach 1:

The plastic body's translucency parameter is optimized to create a threshold effect: in the passive state with no illumination, the opaque coating remains concealed and maintains the black-panel appearance; in the active state with lighting unit illumination, light passes through to create visible patterns, achieving both concealment and visibility requirements

Inventive Principle:
Principle #35Parameter changes

3Adaptability or versatility

If the lighting unit is made switchable between active and passive states, then optical appearance variability is improved, but the device complexity increases

Engineering Contradiction:
Improvelighting state controlVSAvoidlighting unit integration
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The lighting unit is integrated directly into the plastic body structure, merging the illumination function with the existing shell assembly rather than adding separate external components, thereby achieving lighting state control with minimal increase in overall device complexity

Inventive Principle:
Principle #5Merging (Combining)

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 a variable optical appearance, enhancing design flexibility and aesthetic appeal by creating a three-dimensional light effect with adjustable light intensity and color, while maintaining a uniform and wear-resistant surface.

Implementation Method 1

the plastic body consists of a translucent material so that the gap is covered by the plastic body to the outside when the lighting unit is in the passive state

Methodology Applied
Scientific EffectTranslucency:

Implementation Method 2

The inside of the plastic body is provided with an opaque light-impermeable coating which has at least one gap

Methodology Applied
Scientific EffectLight absorption: Absorption (EM radiation)

Data Source

PatentUS11577669B2Vehicle shell assembly
Publication Date: 2023.02.14 WEBASTO AG
  • US11577669B2 patent drawing
  • US11577669B2 patent drawing
  • US11577669B2 patent drawing

AI summary

A vehicle shell assembly, having a plate-like plastic body having an outside and an inside. A lighting unit is provided which is disposed on the inside and is configured to be switched between an active state and a passive state; the inside of the plastic body is provided with an opaque light-impermeable coating which has at least one gap; and the plastic body may have of a translucent material so that the gap is covered by the plastic body to the outside when the lighting unit is in the passive state and defines a light pattern which is visible from the outside when the lighting unit is in the active state.