Rear Vehicle Lighting With External Reflection for Diffused Output
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Solution Overview
Problem
Existing lighting devices for the rear end of motor vehicles lack an appealing external design and fail to effectively distribute light to create an attractive visual impression.
Innovation Solution
A lighting device configuration that includes a light source, housing, cover panel, and reflection device, where light is emitted through the cover panel and reflected rearward by a diffusing structure or reflective layer, allowing for a diffused and indirect light distribution, enhancing the visual appeal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If light is emitted directly rearward from the lighting device, then the lighting function is simple and direct, but the external appearance is unappealing and light distribution is ineffective
Solution Approach 1:
A reflection device is introduced as an intermediary element between the light source and the rearward direction. This reflection device receives light from the housing and redirects it rearward, creating an appealing external appearance while maintaining functional simplicity. The reflection device acts as a mediator that transforms the direct light emission into a diffused, aesthetically pleasing output.
Solution Approach 2:
The lighting device utilizes the vertical dimension by positioning the reflection device on the lower side of the housing. Light is emitted downward from the housing and then reflected rearward, adding a vertical component to the light path. This dimensional approach creates an appealing external impression while maintaining compact horizontal dimensions.
2Illumination intensity
If light is emitted directly rearward from the lighting device, then the structure is simple, but light distribution is ineffective and visual appeal is lacking
Solution Approach 1:
The reflection device serves as an intermediary that improves light distribution. It receives light from the housing and redirects it rearward with enhanced distribution characteristics. The reflection device can be designed with diffusing structures or specific reflective surfaces to control the light distribution pattern, achieving effective illumination without significantly increasing overall device complexity.
Solution Approach 2:
The reflection device is positioned specifically on the lower side of the housing where light emission is needed. By localizing the reflection function to this specific area, the device achieves effective light distribution without requiring complex structures throughout the entire housing. The local placement of the reflection device optimizes light redirection while maintaining simplicity in other areas.
3Shape
If a reflection device is added to improve external appearance and light distribution, then visual appeal is enhanced, but device complexity increases
Solution Approach 1:
The reflection device is integrated with the housing structure, merging two functional elements into a unified assembly. The reflection device is positioned on the lower side of the housing and can be designed as a single integrated component or attached as a simple separate element. This merging approach enhances external appearance and light distribution while minimizing the increase in overall 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 provides an appealing external appearance and effective light distribution, creating a visually appealing and functional lighting system for motor vehicles.
Implementation Method 1
a reflection device disposed outside of the housing; wherein the lighting device is configured for the light generated by the light source to emit at least partially from the housing of the lighting device through the cover panel when the lighting device is in the installed state, for the light that is emitted through the cover panel to be at least partially incident on the reflection device and to be at least partially reflected by the reflection device such that it moves away from the rear end of the motor vehicle rearward
Implementation Method 2
It may be provided that the reflection device has a diffusing structure. The diffusing structure allows the light to be at least partially reflected back diffusely.
Data Source
AI summary
The invention relates to a lighting device for the back region of a motor vehicle. The lighting device includes: a light source; a housing on or in which the light source is arranged; a cover panel covering the housing at least in sections; and a reflection apparatus disposed outside of the housing. The light generated by the light source emerges at least in part from the housing of the lighting device through the cover panel when the lighting device is in the installed state. The light that has emerged through the cover panel is at least partly incident on the reflection apparatus and is at least partly reflected by the reflection apparatus, such that it moves away backward from the back region of the motor vehicle.