Vehicle Lighting Device with Segmented Light Leakage Plate
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Solution Overview
Problem
Conventional vehicle lighting devices face challenges with increased weight and thickness due to the integral configuration of reflection and light leakage processing plates, which limits the reduction of the reflection plate's thickness and causes unclear boundaries, affecting the appearance and brightness of reflected light.
Innovation Solution
The reflection and light leakage processing plates are configured independently, with the light leakage plate having a gap and extending over the peripheral edge of the reflection plate, allowing for unique functional constructions without mutual restrictions, and made of a material with lower specific gravity than the reflection plate.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the reflection plate and light leakage processing plate are integrally configured, then the structural strength is improved, but the total weight and thickness increase
Solution Approach 1:
The patent divides the integral plate structure into two separate components: a reflection plate and a light leakage processing plate. This segmentation allows each component to be optimized independently for its specific function, reducing the total weight while maintaining the necessary mechanical strength through proper material selection and structural design of each separate part.
2Weight of moving object
If the reflection plate thickness is reduced, then the weight is decreased, but the mechanical strength is compromised
Solution Approach 1:
By separating the reflection plate from the light leakage processing plate, the reflection plate can be designed with reduced thickness optimized for its specific reflective function, while the light leakage processing plate provides additional structural support and light control functionality, allowing the reflection plate to be thinner without compromising overall mechanical strength.
3Illumination intensity
If the light leakage processing plate is formed as a prism shape for light scattering, then the light scattering function is improved, but the thickness increases
Solution Approach 1:
The light leakage processing plate is designed as a separate component with prism-shaped light scattering surfaces. This segmentation allows the light scattering function to be concentrated in specific regions of the separate plate, rather than requiring the entire reflection plate to be thickened, thus achieving effective light scattering while maintaining thinner overall plate dimensions.
4Ease of manufacture
If the reflection plate and light leakage processing plate are integrally configured, then the manufacturing process is simplified, but the boundary clarity and visual appearance deteriorate
Solution Approach 1:
By configuring the reflection plate and light leakage processing plate as separate components, the patent enables independent optimization of each part's shape and surface characteristics. This segmentation allows for clear boundary definition between the two functional areas, improving visual appearance and light distribution control, while still maintaining manufacturing simplicity through modular assembly processes.
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
This configuration reduces the total weight and thickness of the plates, maintains mechanical strength, and provides a clear brightness difference against the background, giving the appearance of reflected light coming up against the periphery, regardless of the light source being lit.
Implementation Method 1
the light leakage processing plate is configured so as to scatter light leakage that is not reflected on the reflection plate from among beams of the light from the light emitting element
Implementation Method 2
the reflection plate is disposed so as to cover the flat face of the heat sink, and light from the light emitting element is reflected and then the reflected light is emitted in a second direction that crosses the first direction
Data Source
AI summary
The vehicle lighting device includes a heat sink, a light emitting element, a reflection plate, and a light leakage processing plate. The light leakage processing plate is disposed at a peripheral edge part on a side of the first direction of the reflection plate, and is configured so as to scatter light leakage that is not reflected on the reflection plate from among beams of the light from the light emitting element. The light leakage processing plate is disposed so as to have a gap T with respect to the peripheral edge part of the reflection plate, and is configured so as to be extended over the peripheral edge part of the reflection plate on a side of the second direction and on a side of an opposite direction to the second direction.