Compact Projector Cooling via Merged Heat Dissipation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Image projecting apparatuses using LEDs as light sources face challenges in effectively cooling the heat generated from multiple color LEDs, which requires a suitable cooling device to manage heat dissipation efficiently while maintaining a small and lightweight design.
Innovation Solution
The apparatus incorporates a cooling device with heat dissipation plates, heat transfer members, and a heat sink, along with a cooling fan that inhales air to dissipate heat from light sources and circuit boards, enhancing cooling efficiency and allowing for a compact design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If multiple LED modules emitting different colors are installed separately to generate white light, then the light source functionality is improved, but heat is generated from multiple positions concurrently requiring complex cooling
Solution Approach 1:
The patent merges multiple separate cooling paths into a single integrated cooling device that simultaneously cools multiple LED modules. The cooling device includes a single fan, heat sinks, and heat dissipation structures that handle heat from red, green, and blue LED modules together, reducing the number of separate cooling components needed.
Solution Approach 2:
The cooling device is designed with multi-functionality to handle heat dissipation from multiple LED modules of different colors simultaneously. A single cooling system performs the function of cooling red LEDs, green LEDs, and blue LEDs, as well as cooling the display device and circuit boards, making it a universal cooling solution.
2Reliability
If a cooling device is added to manage heat from multiple light sources, then heat dissipation efficiency is improved, but the apparatus size and weight increase
Solution Approach 1:
The cooling device integrates multiple cooling functions into a single structure, combining heat sinks, heat dissipation plates, and fan components into one unified assembly that cools multiple heat-generating elements simultaneously, reducing the total weight compared to separate cooling systems.
Solution Approach 2:
The cooling device employs a nested structure where heat dissipation plates are positioned within or around the heat sinks, and the entire cooling assembly is integrated within the housing space. This nesting arrangement minimizes the overall volume and weight of the cooling system while maintaining effective heat dissipation.
3Temperature
If heat dissipation plates are disposed at different positions for each LED module, then heat transfer efficiency is improved, but the optical system becomes more complex
Solution Approach 1:
The patent applies local quality by positioning specific heat dissipation plates at specific locations corresponding to each LED module's heat generation characteristics. Each heat dissipation plate is strategically placed near its associated LED module (red, green, or blue) to optimize local heat transfer efficiency while maintaining overall system simplicity.
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 disperses heat from multiple light sources and circuit boards, ensuring efficient cooling and maintaining a small, lightweight image projecting apparatus.
Implementation Method 1
a cooling fan which cools the display device and the heat dissipation device
Implementation Method 2
a heat dissipation device which dissipates heat generated from the plurality of light sources, the light source driving part, the interface circuit board, and the main circuit board
Data Source
AI summary
Disclosed is an image projecting apparatus having a cooling device, which cools heat generated from a plurality of light sources respectively emitting light of different colors and heat generated from a display device simultaneously, while effectively dispersing the heat. The image projecting apparatus includes a projecting system which projects light; a display device disposed in series with the projecting system; an optical system disposed in parallel with the projecting system, and including a plurality of light sources which transmit the light to the display device and generate heat when the light is transmitted to the display device; a heat dissipation device disposed at an outer edge of the optical system which dissipates the heat generated from the plurality of light sources; and a cooling fan disposed opposite to the display device, which inhales air and discharges the air to the heat dissipation device.