Patch LED Light with Perpendicular PCBs for Uniform Illumination
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Solution Overview
Problem
Existing Christmas decoration lights with direct insert type LED lights suffer from uneven lighting due to short shade length, leading to light spots and dark zones, and poor heat dissipation, resulting in a shorter service life.
Innovation Solution
The use of a patch type LED light with a dual printed circuit board configuration, where the first printed circuit board is upright and the second is flat, perpendicular and spot-welded, allowing for better heat dispersion and separation of heat sources, preventing heat transfer between components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a direct insert type LED light is used, then the LED light can be easily installed, but the overall length of the LED light becomes longer, occupying most of the shade space and causing uneven lighting
Solution Approach 1:
The patent changes the LED light type from direct insert type to patch type, fundamentally altering the physical parameters of the LED component. This parameter change reduces the LED light length from typically over 15mm to under 5mm, allowing proper spacing within the shade and achieving uniform lighting without compromising installation ease
2Ease of operation
If a direct insert type LED light is used, then the installation is simple, but the distance between the LED light and shade end becomes shorter, causing light spots and dark zones
Solution Approach 1:
By changing from direct insert type to patch type LED light, the patent achieves a parameter change that reduces the LED length by more than 10mm. This allows the LED to be positioned at an optimal distance from the shade end, ensuring uniform light distribution across the entire shade surface while keeping the installation process simple through the patch type's straightforward welding method
3Device complexity
If a direct insert type LED light is used, then the structure is simple, but the heat dissipation effect becomes poorer and service life becomes shorter
Solution Approach 1:
The patent introduces a dual printed circuit board structure with one board positioned vertically and another horizontally, creating a three-dimensional heat dissipation pathway. This dimensional arrangement allows heat to dissipate in multiple directions rather than being confined to a single plane, significantly improving heat dissipation efficiency and extending LED service life while maintaining reasonable structural complexity
Solution Approach 2:
The patent extracts the heat dissipation function from the single printed circuit board and separates it into two independent boards with different orientations. This extraction allows the heat dissipation system to operate independently from the electrical connection system, improving overall thermal management and reliability without substantially increasing structural complexity
4Ease of manufacture
If the chips of the LED light are distant from the printed circuit board, then the installation is easier, but the heat energy cannot be quickly dispersed
Solution Approach 1:
The patent uses a dual printed circuit board configuration where one board is vertical and the other is horizontal, creating three-dimensional heat dissipation pathways. This dimensional approach allows the LED chips to remain close to at least one circuit board for efficient heat conduction, while the second board provides additional heat dissipation surface area in a different spatial dimension
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 ensures even lighting, improved heat dissipation, and extended service life by increasing the distance between the shade end and the LED light, and isolating heat sources, thus preventing premature failure of components.
Implementation Method 1
the heat energy generated by an operating patch type LED light can be quickly dispersed
Implementation Method 2
the heat energy generated by the operating LED light at the second printed circuit board can be prevented from transmitting to the power supply module at the first printed circuit board
Data Source
AI summary
A novel Christmas light comprises a head and a shade. A lighting device is mounted inside the shade. The lighting device comprises an LED light, a printed circuit board and a power supply module. The LED light is a patch type LED light. The printed circuit board comprises a first printed circuit board and a second printed circuit board. The first printed circuit board is positioned upright. The second printed circuit board is placed flat below the first printed circuit board. The first printed circuit board and the second printed circuit board are perpendicular to each other and fixedly connected with each other. The patch type LED light is welded to a lower bottom surface of the second printed circuit board. The power supply module is mounted on the first printed circuit board. The first printed circuit board and the head are fixedly connected with each other.