Graphite Cup Heat Dissipation in LED Light Bulb Apparatus
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
High power LED light devices face challenges in heat dissipation and manufacturing cost due to the need for complex design rules and safety components when using metal containers for driver circuits, which affects their lifespan and reliability.
Innovation Solution
A light bulb apparatus featuring a graphite cup with a mixed material that is non-conductive and has excellent heat dissipation properties, combined with a driver circuit and LED plate, allows for efficient heat management and reduced manufacturing costs by using injection molding for different heat dissipation and non-conductivity requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a metal container (aluminum housing) is used to house the driver circuit, then the heat dissipation performance is improved, but the device complexity and manufacturing cost increase due to required protective components and safety design rules
Solution Approach 1:
The patent uses a composite material structure where a graphite cup (excellent thermal conductor) is embedded within a plastic housing (electrical insulator). This composite construction allows the driver circuit to be housed in a non-conductive enclosure while achieving effective heat dissipation through the graphite component, eliminating the need for additional protective components required by metal containers.
2Temperature
If a metal container is used for the driver circuit, then the heat dissipation is improved, but the manufacturing cost increases
Solution Approach 1:
The combination of graphite cup and plastic housing creates a cost-effective solution that achieves metal-level heat dissipation performance without the high material and manufacturing costs associated with metal containers. The plastic housing is generally cheaper than metal, and the graphite cup can be molded into the housing, simplifying the manufacturing process.
Solution Approach 2:
The patent merges the heat dissipation function (graphite cup) with the structural housing (plastic enclosure) into a single integrated component. This eliminates the need for separate metal container and protective component assemblies, reducing manufacturing steps and overall cost.
3Temperature
If graphite material is used for the cup, then the heat dissipation is improved, but the electrical conductivity increases which may affect safety
Solution Approach 1:
The patent embeds the conductive graphite cup within an insulating plastic housing. This composite structure allows the graphite to perform its heat dissipation function while the surrounding plastic material provides electrical insulation, preventing any safety issues related to electrical conductivity. The plastic housing acts as an electrical barrier between the graphite and other conductive 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
The solution effectively manages heat dissipation and reduces manufacturing costs by using a non-conductive graphite cup with a mixed material, enhancing the reliability and lifespan of high power LED devices while allowing for shared molding devices across different heat dissipation levels.
Implementation Method 1
Such graphite has nice heat conductive characteristic while is not conductive
Data Source
AI summary
A light bulb apparatus has a LED plate, a cap, a driver circuit and a graphite cup. The graphite cup has a platform part, a container part and a cap part. The platform part is attached to the LED plate. The container part is used for storing the driver circuit and the cap part is used for connecting to the cap so as to install the light bulb apparatus in a standard Edison socket. The graphite cup is molded with a mixed material. The mixed material includes graphite material and is non-conductive.