Segmented Light-Emitting Module for High-Intensity Thermal Control
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Solution Overview
Problem
Existing light-emitting modules struggle to emit light with desired characteristics, particularly in achieving a balance between light intensity and temperature management to prevent junction temperature exceedance in light-emitting elements.
Innovation Solution
A light-emitting module comprising a first light source with a central light-emitting part and surrounding parts, and a second light source connected in parallel, where the light from the central and third light-emitting parts overlaps on an irradiation surface, allowing for switchable irradiation modes with varying light distribution angles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a single light source with high intensity is used, then light intensity on the irradiation surface is improved, but junction temperature of the light-emitting element may exceed the allowable value
Solution Approach 1:
The first light source is divided into multiple light-emitting parts (first light-emitting part and plurality of second light-emitting parts) arranged in a matrix pattern. This segmentation allows the light emission function to be distributed across multiple elements, reducing the thermal load on each individual part while maintaining overall light intensity through coordinated operation.
Solution Approach 2:
The patent combines multiple light-emitting parts from the first light source with a third light-emitting part from the second light source to achieve the desired light intensity. By merging the emission from these multiple parts, the system reaches the required illumination level without overloading any single element, thus preventing junction temperature exceedance.
2Illumination intensity
If multiple light sources are used to increase light intensity, then illumination is improved, but device complexity increases
Solution Approach 1:
The first light source serves multiple functions: it can operate with all light-emitting parts activated for maximum illumination, or with only the first light-emitting part activated for lower intensity applications. This multi-functionality allows the same structure to adapt to different lighting requirements without adding unnecessary complexity.
Solution Approach 2:
The system incorporates dynamic control capability where the activation state of different light-emitting parts can be changed based on requirements. The control unit can selectively activate or deactivate specific light-emitting parts, providing dynamic adjustment of light intensity and distribution without requiring physical reconfiguration of the device structure.
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 module effectively increases light intensity on the irradiation surface while reducing the risk of junction temperature exceedance, thereby enhancing the reliability and performance of the light-emitting module.
Implementation Method 1
a first light source including a first light-emitting part and a plurality of second light-emitting parts arranged around the first light-emitting part
Data Source
AI summary
A light-emitting module includes: a first light source; and a second light source disposed separated from the first light source in a top view. The first light source includes: a plurality of light-emitting parts including a first light-emitting part and a plurality of second light-emitting parts arranged around the first light-emitting part, and a light-shielding member disposed between the plurality of light-emitting parts such that light-emitting surfaces of the plurality of respective light-emitting parts are exposed from the light-shielding member. The second light source comprises a third light-emitting part electrically connected in parallel with the first light-emitting part. Light emitted from the first light-emitting part and light emitted from the third light-emitting part at least partially overlap each other on an irradiation surface.