Vehicle Partition Panel Bulging Section for Light Reflection

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Solution Overview

Problem

The existing vehicle interior structures with partition panels made of clear polycarbonate can reflect light from tail lamps, causing disturbance to drivers through the rear-view mirror due to the reflection of light onto the mirror.

Innovation Solution

A vehicle interior structure with a partition panel arranged along the vehicle width direction behind the driver's seat, featuring a bulging section or an inclining portion that directs reflected light away from the rear-view mirror, either by curving towards the front or inclining downward, reducing the intensity and likelihood of light reaching the driver's line of sight.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a partition panel made of clear polycarbonate is provided between the driver's seat and rear passenger's seats, then crime prevention is improved and visibility is maintained, but light from tail lamps is reflected onto the rear-view mirror causing driver disturbance

Engineering Contradiction:
Improvecrime preventionVSAvoidlight reflection disturbance
Core Design Contradiction:
ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The partition panel incorporates a bulging section with a curved surface that protrudes toward the front of the vehicle. This curvature causes incident light from tail lamps to reflect in multiple directions rather than directly toward the rear-view mirror, effectively scattering the harmful light and eliminating driver disturbance while preserving the panel's transparency and crime prevention function

Inventive Principle:
Principle #14Spheroidality (Curvature)

Solution Approach 2:

The partition panel features an inclining portion with a specific inclination angle in the lower section, while other portions maintain different characteristics. This localized modification of the surface geometry selectively redirects light away from the rear-view mirror without compromising the overall visibility and crime prevention functionality of the entire partition panel

Inventive Principle:
Principle #3Local quality

2Illumination intensity

If the partition panel is made of clear polycarbonate, then transparency and visibility are improved, but light reflection occurs on the surface toward the front

Engineering Contradiction:
Improvevisibility through partitionVSAvoidlight reflection toward front
Core Design Contradiction:
Illumination intensityVSObject-generated harmful factors

Solution Approach 1:

The bulging section's curved surface geometry transforms the flat reflective surface into a scattering surface. Light incident on the curved surface reflects in various directions determined by the local surface normals, preventing concentrated reflection toward the front and reducing glare while maintaining the material's inherent transparency for visibility

Inventive Principle:
Principle #14Spheroidality (Curvature)

Solution Approach 2:

The inclining portion is specifically designed with a predetermined inclination angle to redirect light away from the front direction. This localized geometric modification addresses the reflection problem in specific areas without affecting the overall transparency and visibility function of the clear polycarbonate material

Inventive Principle:
Principle #3Local quality

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 proposed structure effectively reduces the intensity and impact of reflected light on the rear-view mirror, minimizing driver disturbance by scattering or redirecting the light away from the driver's vision.

Implementation Method 1

the partition panel made of polycarbonate mentioned above acts to reflect part of light incident on the surface thereof

Methodology Applied
Scientific EffectLight reflection: Reflection

Implementation Method 2

the partition panel is provided with an inclining portion inclining with respect to the vehicle vertical direction such that the inclining portion becomes closer to the vehicle front side as extending downward

Methodology Applied
Scientific EffectLight reflection: Reflection

Data Source

PatentUS9643477B2Vehicle interior structure
Publication Date: 2017.05.09 NISSAN MOTOR CO LTD
  • US9643477B2 patent drawing
  • US9643477B2 patent drawing
  • US9643477B2 patent drawing

AI summary

A vehicle interior structure has a driver's seat disposed inside a cabin, a rear passenger's seat disposed on a vehicle rear side of the driver's seat inside the cabin, and a partition panel arranged along a vehicle width direction between the driver's seat and the rear passenger's seat. The partition panel has a bulging section bulging toward a vehicle front side.