Light-Source Apparatus Heat Dissipation via Shield Plate
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing light-source apparatuses face challenges in effectively dissipating heat generated by light-source chips, leading to increased temperature, reduced light output, and potential deterioration of the chips.
Innovation Solution
The light-source apparatus incorporates both a first and second heat dissipation path, with the first path passing through a thermally-conductive member and an electromagnetic shield plate, and the second path through a substrate, to efficiently dissipate heat from the light-source chip, while the thermally-conductive member is designed to minimize reflectivity and prevent stray light interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If heat dissipation structures are added to the light-source apparatus, then heat dissipation performance is improved, but device complexity increases
Solution Approach 1:
The electromagnetic shield plate is designed to serve dual functions: providing electromagnetic shielding and acting as a heat dissipation path. The case structure also simultaneously provides mechanical support and serves as a heat dissipation component. This multi-functionality approach allows heat dissipation without adding separate dedicated heat dissipation structures, thereby improving temperature management while avoiding increased device complexity.
2Power
If the light-source chip operates at high power, then light output is improved, but temperature increase and deterioration are worsened
Solution Approach 1:
Heat is extracted from the light-source chip through dedicated heat dissipation paths that separate the thermal management function from the optical function. The first heat dissipation path extracts heat through the case and second heat dissipation path through the electromagnetic shield plate, allowing the light-source chip to operate at high power while maintaining reliable temperature control to prevent deterioration.
3Illumination intensity
If reflective surfaces are used in the light-source apparatus, then light direction control is improved, but stray light interference is worsened
Solution Approach 1:
The inner surface of the case is selectively treated with low reflectivity only in the specific region where stray light control is needed, while other surfaces maintain appropriate reflectivity for light direction control. This localized treatment allows the system to achieve both light direction control and stray light suppression without compromising overall optical performance.
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 effectively suppresses temperature increases in the light-source chip, maintaining light output and preventing deterioration, while also minimizing stray light reflection and ensuring unobstructed irradiation.
Implementation Method 1
a thermally-conductive member arranged to abut both the case and the electromagnetic shield plate
Implementation Method 2
an electromagnetic shield plate that covers at least part of the substrate
Data Source
AI summary
A light-source apparatus includes a light-source chip, a case, a substrate, an electromagnetic shield plate and a thermally-conductive member. The light-source chip is received in the case. The case is mounted to the substrate. The electromagnetic shield plate covers at least part of the substrate. The thermally-conductive member is arranged to abut both the case and the electromagnetic shield plate.