Multi-sided Light Guide Member for Uniform Automotive Lighting
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Solution Overview
Problem
Existing automobile lighting systems struggle to implement a multi-sided light emitting structure with uniform light patterns, particularly in complex three-dimensional designs, due to high component costs and mechanical limitations, and fail to effectively combine linear and surface light sources.
Innovation Solution
A multi-sided luminous lighting member featuring a light guide member with a light incident portion, a first light exit portion for linear light, and a second light exit portion for surface light, along with strategically placed LEDs and a bezel portion to adjust light patterns, allowing for modular, flexible, and cost-effective implementation of three-dimensional lighting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If multiple LEDs are arranged closely to achieve uniform linear light source, then light uniformity is improved, but component cost and device complexity increase
Solution Approach 1:
A light guide member is introduced as an intermediary between the LED array and the external environment. The LED array emits light that is captured and redistributed by the light guide member, which has specific refractive indices and geometric configurations to achieve uniform linear light output without requiring closely spaced LEDs
Solution Approach 2:
The patent changes optical parameters including the refractive index of the light guide member (specifically configured to be between 1.4-1.7), the arrangement pitch of LEDs (optimized to 2-5 times the LED diameter), and the geometric parameters of the light guide member to transform point light sources into uniform linear light sources
2Device complexity
If traditional point light emitting LEDs are used, then device simplicity is maintained, but three-dimensional light emitting pattern cannot be implemented
Solution Approach 1:
The patent transitions from traditional planar LED arrangements to three-dimensional light emitting structures by configuring the light guide member with multiple light exit surfaces at different orientations, enabling light emission in multiple spatial dimensions while maintaining relative structural simplicity
Solution Approach 2:
The light guide member serves multiple functions simultaneously: it collects light from the LED array, redistributes light uniformly, shapes the light beam, and enables multi-directional light emission, replacing what would traditionally require multiple separate optical components
3Illumination intensity
If arrangement interval of LEDs is decreased to avoid point light sources, then light uniformity is improved, but manufacturing cost increases
Solution Approach 1:
The patent optimizes the LED arrangement interval parameter to be 2-5 times the LED diameter, which is a relaxed spacing compared to traditional approaches. Combined with the light guide member's refractive index configuration (1.4-1.7), this parameter optimization achieves uniform light distribution without requiring excessive LED density, thereby controlling manufacturing costs
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 creation of a versatile, cost-effective, and adaptable lighting system that can be easily integrated into complex automobile designs, providing both uniform linear and surface light sources, enhancing design flexibility and reducing manufacturing costs.
Implementation Method 1
a light guide member which is a multi-sided light-transmitting light guide member having a plurality of surfaces and has a light incident portion which is at least one of the plurality of surfaces, a first light exit portion which is at least one other surface opposite to the light incident portion among the plurality of surfaces, and a second light exit portion which is at least one other surface positioned laterally
Implementation Method 2
a light guide member which is a multi-sided light-transmitting light guide member
Data Source
Figure 1a
Figure 1b
Figure 2(a)~2(b)
AI summary
Disclosed are: a multi-sided luminous lighting member which is mounted to a structure having a complex three-dimensional shape, such as an automobile, so as to be used for the purpose of lighting, signaling, decoration, and the like; and a three-dimensional lighting device using the same. The lighting member according to an aspect of the present invention is a light-transmitting light guide member having a plurality of light emitting surfaces and comprises: a light guide member having a light incident portion which is at least one of the plurality of light emitting surfaces, a first light exit portion which is at least one other surface opposite to the light incident portion among the plurality of light emitting surfaces, and a second light exit portion which is at least one other surface placed laterally in the direction in which light incident to the light incident portion travels toward the first light exit portion, wherein light incident to the light incident portion is emitted from the first light exit portion and the second light exit portion; at least one light emitting diode disposed adjacent to the light incident portion such that light is incident to the light incident portion; and a mounting board for mounting the at least one light emitting diode on the surface thereof, the mounting board being connected to the light guide member.