Light Source Device with Reduced Fastener Holes
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Solution Overview
Problem
High heat generation in high-brightness projection devices affects efficiency and reliability, necessitating effective heat dissipation solutions.
Innovation Solution
A light source device design with a heat dissipation base, circuit board, mask cover, and pressing members, where the mask cover is fastened to the heat dissipation base using first fasteners, and the light source unit is pressed onto the base through resilient pressing members, minimizing fastener holes and maximizing heat dissipation areas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the light source unit is fastened to the heat dissipation base using multiple fasteners, then the fixation reliability is improved, but the heat dissipation area is reduced due to fastener holes
Solution Approach 1:
The patent combines the fastening function and pressing function into a single integrated structure. The pressing members are installed on the mask cover and press the light source unit against the heat dissipation base, while the first fasteners only secure the mask cover to the base. This merging eliminates the need for separate fasteners on the light source unit, reducing fastener holes and preserving heat dissipation area while maintaining reliable fixation through the combined pressing-fastening mechanism
Solution Approach 2:
The patent extracts the fastening function from the light source unit fixation system. Instead of using fasteners to directly secure the light source unit to the heat dissipation base, the design removes fasteners from this interface and relies solely on the pressing members applied through the mask cover. This extraction eliminates fastener holes in the light source unit's mounting area, maximizing the heat dissipation surface while maintaining secure fixation through the pressing mechanism
2Strength
If more fastener holes are made in the heat dissipation base, then the fixation strength is improved, but the heat dissipation performance deteriorates
Solution Approach 1:
The patent segments the fixation system into two independent parts: the mask cover fixation (using first fasteners) and the light source unit fixation (using pressing members). This segmentation allows the heat dissipation base to have fastener holes only where the mask cover is attached, rather than additional holes for light source unit fasteners. The segmentation maintains adequate fixation strength through the distributed first fasteners while preserving heat dissipation performance by minimizing the total number of fastener holes in the base
3Device complexity
If the light source unit is fastened directly to the heat dissipation base, then the fixation is simplified, but the heat dissipation area is blocked by fasteners
Solution Approach 1:
The patent introduces the mask cover as an intermediary component between the light source unit and the heat dissipation base. The mask cover serves as a platform for installing pressing members that indirectly secure the light source unit to the base. This intermediary approach simplifies the overall structure by consolidating fasteners onto the mask cover rather than requiring complex direct fastening arrangements, while simultaneously preserving heat dissipation area by eliminating direct fastener holes through the light source unit mounting interface
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
Improves heat dissipation efficiency by reducing fastener holes, allowing more surface area for heat pipes and fins, effectively dissipating heat from the light source unit, and blocking ultraviolet light to prevent glue aging and improve projection quality.
Implementation Method 1
the heat dissipation base has more areas on the opposite surface where the light source unit is disposed, which are configured for heat dissipation
Implementation Method 2
heat dissipation base, a circuit board, a light source unit... effectively dissipating heat from the light source unit
Implementation Method 3
the plurality of pressing members are fixed on the mask cover... the mask cover is connected to the light source unit on the heat dissipation base through the plurality of pressing members
Data Source
AI summary
A light source device includes a heat dissipation base, a circuit board, a light source unit, a mask cover, a plurality of pressing members, and a plurality of first fasteners. The circuit board is disposed on the heat dissipation base. The light source unit, which is electrically connected to the circuit board, is disposed on the heat dissipation base and located in a through hole of the circuit board. The plurality of pressing members is fixed on the mask cover. The plurality of first fasteners passes through the mask cover, the plurality of circuit board, and the heat dissipation base in sequence, to fasten the mask cover and the circuit board on the heat dissipation base, and the mask cover is connected to the light source unit on the heat dissipation base through the plurality of pressing members.