Bi-Directional Light Guide Layer for Vehicle Lamp 3D Effects
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Solution Overview
Problem
Existing vehicle lighting systems face challenges in achieving high light quantity and three-dimensional effects due to limitations in light exit direction, leading to increased costs and reduced efficiency, especially in curved or narrow spaces where multiple optical elements and complex circuit implementations are required.
Innovation Solution
A lighting device with a bi-directional light exit structure, featuring a light guide layer with exit surfaces on both sides, a light emitting module embedded in the guide layer, and a light-transmitting printed circuit board, allowing light to be emitted from both surfaces and enabling three-dimensional light effects without the need for external lenses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If LED packages are used as light sources to achieve high light quantity, then brightness is improved, but the number of optical elements and circuit complexity increases leading to high cost and low efficiency
Solution Approach 1:
The patent merges multiple light emitting units into a single integrated light guide layer structure. Instead of using separate LED packages with individual optical elements, the invention integrates multiple light emitting diodes within one light guide layer, allowing them to function as a unified system. This reduces the number of discrete optical elements and simplifies the overall device structure while maintaining high brightness output.
Solution Approach 2:
The light guide layer serves multiple functions simultaneously: it acts as a substrate for mounting light emitting units, functions as a light guide to distribute light, and provides the light emitting surface. This multi-functionality eliminates the need for separate optical elements that would otherwise be required to achieve similar effects, thereby reducing device complexity and cost.
2Illumination intensity
If multiple LED packages are used to achieve three-dimensional light effects, then lighting quality is improved, but cost and device complexity increase significantly
Solution Approach 1:
The patent combines multiple light emitting units within a single integrated circuit board and light guide layer assembly. By mounting multiple LEDs on one circuit board and using a single light guide layer to distribute light from all units, the invention achieves three-dimensional light effects without requiring separate circuit implementations for each LED package, thereby reducing circuit complexity.
Solution Approach 2:
The invention creates three-dimensional light effects by utilizing the spatial arrangement of multiple light emitting units within the light guide layer and the optical path through the light guide material. Instead of stacking multiple complex optical assemblies, the patent achieves 3D effects through the two-dimensional arrangement of LEDs and the light propagation characteristics of the integrated structure.
3Adaptability or versatility
If light is emitted in one direction only, then optical efficiency is simplified, but design freedom and versatility are limited
Solution Approach 1:
The patent transitions from single-directional light emission to bi-directional light emission by configuring the light guide layer with light emitting surfaces on both the front and back sides. This allows light to be emitted in two opposite directions simultaneously, greatly enhancing design freedom for various lighting applications without requiring additional optical elements.
Solution Approach 2:
The light guide layer is designed to perform multiple functions: it guides light from the light emitting units and emits light in both directions. This multi-functional design eliminates the need for separate optical elements to achieve bi-directional emission, maintaining simplicity while increasing versatility for different mounting orientations and lighting requirements.
4Illumination intensity
If the number of light emitting units is increased to cover limited spaces, then light quantity is improved, but heat dissipation and implementation difficulty increase
Solution Approach 1:
The patent merges multiple light emitting units into a single integrated mounting structure on the circuit board within the light guide layer. This integrated design allows for unified thermal management, where heat from multiple LEDs can be dissipated through the common substrate and housing structure, rather than requiring separate heat dissipation solutions for each individual LED package.
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 design increases the degree of freedom in lighting device placement, reduces the number of light emitting units, enhances light efficiency, and simplifies the structure while providing a three-dimensional effect and improved aesthetics, suitable for various applications including vehicle lighting.
Implementation Method 1
a light guide layer in which light exit surfaces are formed on one surface and on the other surface opposite to the one surface
Implementation Method 2
providing the optical member having a protruding optical pattern at a position corresponding to the light exit surface of the light guide member
Implementation Method 3
an effect is realized which changes shapes and a three-dimensional effect of light according to viewing angles
Data Source
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Figure 8
AI summary
An embodiment of the present invention relates to a lighting device structure that can increase the degree of freedom of a light emitting surface and realize an effect of changing the shape and the three-dimensional feeling of light and there is provided a lighting device including a light guide layer in which light exit surfaces are formed on one surface and on the other surface opposite to the one surface; a light emitting module that is embedded in the light guide layer and disposed at an outer periphery of a light exit surface of the light guide layer; and a light-transmitting printed circuit board that mounts an light emitting device on the light emitting module and is disposed under the light guide layer.