Side-Emitting LED Module With Light Guide for Uniform Vehicle Lamps
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Solution Overview
Problem
Conventional LED modules have a high volume and weight due to the need for a reflection structure to direct light laterally, resulting in restricted design options and non-uniform brightness distribution, especially in vehicle lamps.
Innovation Solution
An LED module design that includes a light emitting part emitting light through its side surfaces, combined with a panel part featuring light guide units and optics to distribute light uniformly, reducing the need for additional space and weight, and ensuring uniform brightness across the lamp.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a reflection plate structure is added to direct light to lateral side, then light distribution is improved, but volume and weight increase
Solution Approach 1:
The patent integrates the light guiding function directly into the panel part structure, merging the functions of light emission and light redirection into a single integrated component. The panel part includes light emitting parts and light guiding parts as unified structural elements, eliminating the need for separate reflection plates and reducing overall volume.
Solution Approach 2:
The patent changes the light emission direction from conventional front-side emission to side-surface emission. The light emitting parts emit light through side surfaces, and the light guiding parts redirect this lateral light, utilizing a different spatial dimension for light distribution and eliminating the need for additional rear-space reflection structures.
2Illumination intensity
If a reflection plate structure is added to direct light to lateral side, then light distribution is improved, but weight increases
Solution Approach 1:
The patent combines the light guiding function with the panel part structure, creating an integrated component that performs both structural support and light redirection functions. This merging eliminates the need for separate reflection plate components, thereby reducing total weight.
Solution Approach 2:
The panel part is designed as a multi-functional component that simultaneously provides structural support, houses light emitting elements, and guides light distribution. This universal design replaces multiple specialized components (including reflection plates) with a single multi-functional unit, reducing weight.
3Device complexity
If light is directed only to front side, then LED structure is simple, but brightness uniformity deteriorates
Solution Approach 1:
The patent divides the panel part into distinct functional segments: light emitting parts and light guiding parts. The light guiding parts are further segmented into multiple surfaces (first light guiding surface, second light guiding surface) that redirect light in different directions, creating uniform brightness distribution through segmented light redirection paths.
Solution Approach 2:
The patent transitions from single-direction (front-side) light emission to multi-directional light distribution by utilizing side-surface emission and multiple light guiding surfaces. This dimensional change in light propagation creates more uniform brightness across the illumination area while maintaining relatively simple structure.
4Illumination intensity
If reflection plate is used to direct light laterally, then light distribution is improved, but design flexibility is restricted
Solution Approach 1:
The patent merges light guiding functions into the panel part structure, creating a highly integrated design that can be easily adapted to different applications. The integrated panel part with embedded light guiding surfaces can be customized for various form factors and installation locations, providing greater design flexibility compared to separate reflection plate assemblies.
Solution Approach 2:
By utilizing side-surface light emission and multi-surface light guiding, the patent creates a compact, adaptable structure that can be integrated into diverse design configurations. This approach allows for flexible positioning and orientation options that are not constrained by the space requirements of traditional reflection plate designs.
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 design reduces the volume and weight of the LED module while achieving uniform brightness in vehicle lamps, allowing for more flexible design options and reduced number of light sources required.
Implementation Method 1
a light guide unit including a plurality of light output parts that guides and outputs light emitted from the side surface of the light emitting part
Implementation Method 2
a light guide unit including a plurality of light output parts that guides and outputs light emitted from the side surface of the light emitting part
Implementation Method 3
an optic provided with the lens part and having a fine boss shape on an outer surface thereof
Implementation Method 4
an optic provided with the lens part and having a fine boss shape on an outer surface thereof
Data Source
AI summary
Disclosed is a LED module. The LED module includes a cover part, a board part connected to a front side of the cover part, a light emitting part electrically connected to the board part, disposed on a front side of the board part, and that emits light through a side surface thereof, and a panel part disposed on the front side of the board part, and the panel part includes a light guide unit including a plurality of light output parts that guides and outputs light emitted from the side surface of the light emitting part.