LED Filament Lamp Insulating Liner for Short Circuit Prevention
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Solution Overview
Problem
The existing LED filament lamp technologies face issues with short circuits between the driving board and the lamp holder due to direct contact, leading to damage during movement or vibration, and complicating assembly and production efficiency.
Innovation Solution
Incorporating an insulating inside liner made of deformable material within the lamp holder bulb shell to separate the driving board from the bulb shell, using conductive electrodes and a convex ring for secure electrical connections, and filling the sealed chamber with gases for effective heat dissipation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the driving board is directly installed in the lamp holder bulb shell, then the assembly structure is simple, but short circuits occur between the driving board and lamp holder
Solution Approach 1:
An insulating liner is introduced as an intermediary component between the driving board and the lamp holder bulb shell. The liner has an installing cavity that receives the driving board, and its insulating properties prevent short circuits while maintaining structural integration. This resolves the contradiction by adding a mediating element that simultaneously ensures electrical isolation and structural simplicity.
2Device complexity
If the driving board is directly installed in the lamp holder bulb shell, then the structure is compact, but damage occurs during movement or vibration
Solution Approach 1:
The insulating liner serves as a cushioning structure that absorbs and distributes mechanical stress during movement or vibration. By receiving the driving board within its installing cavity, the liner prevents direct contact between the driving board and the lamp holder bulb shell, thereby protecting electrical connections from damage while maintaining structural compactness.
3Reliability
If welding process is used to electrically connect the electric board and lamp holder, then electrical connection is achieved, but production efficiency is reduced
Solution Approach 1:
The patent replaces the welding process (thermal/mechanical system) with a mechanical insertion system. The driving board is electrically connected to the lamp holder bulb shell through conductive contacts within the insulating liner's installing cavity, eliminating the need for welding operations. This substitution maintains reliable electrical connection while significantly improving production efficiency by removing a complex manufacturing step.
Data Source
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AI summary
An LED filament lamp comprises a bulb shell and an LED filament component located inside the bulb shell. The LED filament lamp further comprises a driving board, a lamp holder bulb shell and an inside liner. The inside liner is a bulb shell structure made of insulating material and installed inside the lamp holder bulb shell. At least a part of the driving board is located inside the inside liner to make the driving board and the lamp holder bulb shell separate from each other. The LED filament component is electrically connected to the driving board and the lamp holder bulb shell is electrically connected to the driving board. The LED filament lamp has characteristic of simple structure.