Vehicle Light-Guiding Body Structure for Illuminance and Glare Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing vehicle light-guiding bodies struggle to irradiate a light distribution pattern toward the front of a vehicle with appropriate illuminance, particularly in integrating reflector, shade, and projection lens functions.
Innovation Solution
A vehicle light-guiding body with an incidence surface, first and second reflection surfaces, a light blocking part, transmission and re-incidence surfaces, and emission surfaces, along with glare suppression surfaces, to control and direct light distribution patterns effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If respective functions corresponding to a reflector, a shade, a projection lens, and the like are integrated into one vehicle light-guiding body, then device complexity is reduced, but illumination intensity and light distribution control become difficult to optimize
Solution Approach 1:
The light-guiding body is divided into multiple functional surfaces: a first reflection surface for reflecting light, a second reflection surface for further reflecting light, a light blocking part for blocking specific light paths, a transmission surface for transmitting light, and an emission surface for emitting light. This segmentation allows each surface to be optimized independently for its specific function while maintaining overall integration.
Solution Approach 2:
Different surfaces within the light-guiding body are designed with different optical properties and geometries tailored to their specific functions. The first reflection surface has specific reflectivity characteristics, the second reflection surface has different orientation, the light blocking part has selective blocking properties, and the emission surface has optimized light extraction characteristics. This local optimization enables precise control of light distribution patterns.
2Illumination intensity
If multiple surfaces and parts are added to control light distribution, then illumination intensity is improved, but device complexity increases
Solution Approach 1:
Multiple optical functions (reflection, light blocking, transmission, emission) are merged into a single integrated light-guiding body structure. The first reflection surface, second reflection surface, light blocking part, transmission surface, and emission surface are all combined in one component, eliminating the need for separate reflectors, shades, and projection lenses, thereby reducing overall device complexity while maintaining sophisticated light control.
Solution Approach 2:
The light-guiding body serves multiple functions simultaneously: it reflects light via the first and second reflection surfaces, blocks specific light paths through the light blocking part, transmits light through the transmission surface, and emits light through the emission surface. This multi-functionality allows a single component to perform what would traditionally require multiple separate components.
3Use of energy by moving object
If light is transmitted to the light-guiding body outer part, then light use efficiency is improved, but glare suppression becomes problematic
Solution Approach 1:
The transmission surface, which could potentially cause glare by transmitting light to the outer part, is designed to also suppress glare through its specific geometric configuration and orientation. The surface transmits necessary light for illumination while its design characteristics inherently suppress harmful glare, converting what could be a harmful effect into a beneficial dual-function feature.
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 enables the vehicle light-guiding body to irradiate a light distribution pattern with appropriate illuminance, reducing glare and improving light use efficiency while adjusting illuminance levels.
Implementation Method 1
a first reflection surface that internally reflects the light incident from the incidence surface
Implementation Method 2
a second reflection surface that internally reflects the light reflected by the first reflection surface forward
Implementation Method 3
a connection surface that connects an upper side end of the transmission surface and the light blocking part, and internally reflects a portion of the light internally reflected by the second reflection surface forward
Implementation Method 4
an emission surface that emits the light internally reflected by the second reflection surface and passing the light blocking part or passing above the light blocking part, and the light incident from the re-incidence surface
Data Source
AI summary
The invention is to irradiate a light distribution pattern with an appropriate illuminance. A vehicle light-guiding body includes an incidence surface, a first reflection surface internally reflecting incident light, a second reflection surface internally reflecting the light reflected by the first reflection surface forward, a light blocking part blocking a portion of the light reflected by the second reflection surface, an adjustment surface extending forward from a front side end of the second reflection surface, a transmission surface provided in a state of extending upward in an up-down direction from the front side end of the adjustment surface and transmitting a portion of light reflected by the second reflection surface to a light-guiding body outer part, a connection surface connecting the transmission surface and the light blocking part, and internally reflecting a portion of the light internally reflected by the second reflection surface, a re-incidence surface, and an emission surface.