Vehicle Reversing Lamp Shield for Road Surface Pattern Projection
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Solution Overview
Problem
Existing vehicle lamps do not effectively form a road surface pattern at the rear of a vehicle when reversing, which can lead to inadequate notification of nearby drivers or pedestrians about the vehicle's reversing motion.
Innovation Solution
A vehicle lamp comprising a light source unit, a shield unit with protrusion members, and a lens unit that concentrates light to form road surface patterns, with auxiliary light enhancing brightness in specific areas, using a combination of main and auxiliary transmission apertures and lenses with different refractive indices to ensure uniform illumination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a conventional reversing lamp is used, then the lamp structure is simple, but the road surface pattern formation capability is insufficient
Solution Approach 1:
The shield unit is divided into multiple protrusion members (first, second, third protrusion members) that selectively transmit light to form different segments of the road surface pattern. Each protrusion member acts as an independent light transmission element, collectively creating the desired pattern while maintaining modular simplicity
Solution Approach 2:
The shield unit with protrusion members serves as an intermediary element between the light source and the road surface. It selectively transmits and blocks light to form the pattern, mediating the light path without requiring complex optical systems or multiple light sources
2Reliability
If the shield unit is made with smooth inner surfaces, then manufacturing is easier, but stacked shields may come into direct contact causing damage
Solution Approach 1:
The protrusion members introduce curved, non-planar surfaces to the otherwise flat shield structure. These protruding elements create natural spacing and prevent direct contact between stacked shields, eliminating the need for complex surface treatments while maintaining manufacturing simplicity
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 effectively notifies nearby drivers or pedestrians of a vehicle's reversing motion by creating a visible road surface pattern, while reducing the roughness of the shield unit's inner surfaces and preventing direct contact between stacked shields, thus enhancing safety and visibility.
Implementation Method 1
a lens unit that concentrates the light transmitted through the shield unit on a road surface
Implementation Method 2
a shield unit that selectively transmits a portion of the light generated from the light source unit
Data Source
AI summary
A lamp for vehicle includes a light source unit that generates light, a shield unit that selectively transmits a portion of the light of the light source unit, and a lens unit that concentrates the light transmitted through the shield unit to a road surface. The shield unit includes at least one protrusion member that protrudes outwardly from a surface of the shield unit.