Projector Light Source Module Heat Dissipation via Concave Structure
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Solution Overview
Problem
Current projector designs with laser diode light sources face challenges in heat dissipation, which affects the efficiency and longevity of the light source module.
Innovation Solution
The projector incorporates a light source module with a substrate, light emitting elements, a heat conducting structure, and an electricity insulating and heat conducting element, where the latter is disposed in a concave to increase heat conduction paths, enhancing heat dissipation efficiency by allowing heat to be conducted through both the heat conducting structure and the conductive portions of the light emitting elements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If a laser diode light source is used in the projector, then the luminance efficiency is improved (approximately higher than 20%), but the heat dissipation ability deteriorates due to heat generation during illumination
Solution Approach 1:
The heat conducting structure is divided into multiple segments including a first heat conducting structure, a second heat conducting structure, and a third heat conducting structure. These segmented structures work together to conduct heat from different parts of the light emitting element, improving overall heat dissipation efficiency while maintaining high luminance efficiency
Solution Approach 2:
Different parts of the light emitting element are provided with different heat conducting structures tailored to their specific thermal characteristics. The conductive portion receives heat conduction from both the first and second heat conducting structures, while the non-conductive portion receives heat conduction from the third heat conducting structure, optimizing local heat dissipation
2Reliability
If the conductive portion is located in the concave of the heat conducting structure, then the heat conduction path is increased through multiple paths, but the device complexity increases due to the multi-structure configuration
Solution Approach 1:
The first heat conducting structure and the second heat conducting structure are merged to simultaneously conduct heat from the conductive portion to different heat dissipation locations. This merging approach increases heat conduction paths and improves heat dissipation efficiency while avoiding the need for completely separate independent structures
Solution Approach 2:
The heat conducting structures serve multiple functions: they provide thermal conduction from different parts of the light emitting element, provide structural support, and facilitate heat distribution to multiple dissipation points. This multi-functionality reduces the need for additional dedicated components
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 significantly improves the heat dissipation efficiency of the light source module, preventing short circuits and ensuring effective heat transfer to the dissipation structure, thereby enhancing the overall performance and reliability of the projector.
Implementation Method 1
the heat generated by the light emitting element is conducted to the heat dissipation structure not only through the heat conducting structure, but also through the conductive portion of the light emitting element and the electricity insulating and heat conducting element
Data Source
AI summary
A projector includes a light source module, a light valve, and a projection lens. The light source module includes a substrate, at least one light emitting element, a heat conducting structure, and at least one electricity insulating and heat conducting element. The light emitting element is disposed on the substrate, and has a conductive portion. The light emitting element provides an illumination beam. The heat conducting structure has at least one concave. The substrate is disposed in the at least one concave, and the conductive portion is located in the concave. The electricity insulating and heat conducting element is disposed in the concave, and covers the substrate and the conductive portion. The light valve is disposed on a transmission path of the illumination beam, and converts the illumination beam to an image beam. The projection lens is disposed on a transmission path of the image beam.