V-Shaped Vehicle Lighting Device with Angled Diffuser
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Solution Overview
Problem
Existing vehicle lighting devices struggle to provide homogeneous luminous intensity at lateral viewing angles, often resulting in low illumination and potential light concentrations (hot spots) due to their design, which limits lateral light emission.
Innovation Solution
A v-shaped lighting device design featuring a lens at a v-shaped angle to the main reflection direction, with a diffuser acting as a separating wall or end wall between reflectors on stepped levels, ensuring light is scattered uniformly in lateral directions, preventing hot spots and enhancing lateral illumination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If the diffuser extends relatively parallel to the light emitting surface to create a flat lighting device, then the lighting device achieves a comparatively flat structure, but illumination in lateral direction is possible only with comparatively low luminous intensity
Solution Approach 1:
The patent introduces a third dimension by positioning the diffuser at an angle (beta) relative to the light emitting surface, rather than extending it parallel to the surface. This angular arrangement allows light to be scattered in lateral directions while maintaining the flat overall structure of the lighting device, thus resolving the contradiction between flat structure and lateral illumination intensity
Solution Approach 2:
The patent combines the diffuser with a housing that has a pronounced V-shape and incorporates a V-shaped lens. This composite structure integrates multiple functional elements (diffuser at angle, V-shaped housing, V-shaped lens) to achieve both the flat structure requirement and enhanced lateral illumination capability
2Illumination intensity
If additional elements are disposed in the internal space between reflectors and lens to prevent lateral light radiation, then light concentrations (hot spots) are prevented, but the device complexity increases
Solution Approach 1:
The patent makes the housing serve multiple functions: it provides the structural enclosure, creates the V-shape geometry for light distribution, and incorporates the V-shaped lens for lateral illumination. By integrating these functions into a single housing structure rather than adding separate elements, the patent achieves homogeneous light distribution without proportionally increasing device complexity
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 achieves homogeneous luminous intensity without light concentrations at lateral viewing angles by scattering light uniformly in transverse directions, allowing for effective lateral radiation while maintaining primary longitudinal axis illumination.
Implementation Method 1
a number of reflectors reflecting the light emitted by the light sources into a specified main reflection direction
Implementation Method 2
a number of diffusers scattering the light emitted by the light sources
Data Source
AI summary
A lighting device for vehicles with a number of light sources, a number of reflectors reflecting the light emitted by the light sources into a specified main reflection direction, a number of diffusers scattering the light emitted by the light sources and a lens which is disposed in main reflection direction in front of the reflector and the diffuser. The lens is disposed at a v-shaped angle of a surface normal of the lens toward the main reflection direction of the reflector. A theoretical prolongation of the diffuser in relation to the surface normal of the lens extends in an acute angle of incidence or vertically to the lens. The diffuser is disposed as a separating wall between two reflectors which are disposed on stepped, offset levels and/or the diffuser is disposed as an end wall at a reflector.