Four-Wire Double-Sided PCB LED Lamp for 360° Emission
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Solution Overview
Problem
LED luminous bodies are prone to welding short circuits due to their small size and the thickness of connecting wires, and existing LED lamps often have insufficient 360° light emission.
Innovation Solution
A four-wire double-sided PCB design with LED luminous bodies on both sides of the PCB, connected via electrodes to achieve 360° light emission, allowing for easy welding and adaptation to thicker wires.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If LED luminous bodies are directly welded on thick wires to improve carrying capacity, then the current carrying capacity is improved, but the welding short circuit problem becomes more severe
Solution Approach 1:
The patent introduces a PCB board as an intermediary component between the thick power wires and the LED luminous bodies. The PCB provides dedicated power pads and signal pads that receive thick wires, while the LED components are mounted on the PCB using standard SMT processes. This intermediary structure allows thick wires to connect to the PCB without directly welding to the small LED components, thereby maintaining high current carrying capacity while eliminating the welding short circuit problem.
2Device complexity
If LED luminous bodies are spaced apart on linear conductors to reduce complexity, then the device complexity is reduced, but the light-emitting surface becomes insufficient
Solution Approach 1:
The patent transitions from a one-dimensional linear conductor arrangement to a two-dimensional PCB surface mounting configuration. Multiple LED luminous bodies can be arranged on the PCB surface in different positions and orientations, including on both the front and back sides of the PCB. This dimensional change allows for increased light-emitting surface area while maintaining reasonable wiring complexity through the PCB's structured electrode layout.
3Illumination intensity
If more LED lamp beads are added to the lamp string to increase illumination, then the light output is improved, but the wires become thicker and more difficult to handle
Solution Approach 1:
The patent merges multiple wire functions into a single PCB structure. Instead of having separate wires for each LED component, the PCB consolidates power delivery, signal transmission, and component interconnection into its trace and pad network. Multiple LED lamp beads can be connected in series or parallel configurations using the PCB's electrode pathways, allowing high light output from multiple LEDs while maintaining simple external wiring with only a few power and signal connections.
Data Source
AI summary
An LED lamp with a four-wire double-sided PCB includes a PCB, wherein the PCB is provided with a first LED luminous body and a second LED luminous body, respectively at the central regions of the obverse and reverse sides of the PCB to realize 360° light emission; the PCB is also sequentially provided with four electrodes around any one of the two central regions, wherein two electrodes are respectively configured to be connected with different signal terminals of the two LED luminous bodies; the remaining two electrodes are respectively configured to be connected with different power supply terminals of the two LED luminous bodies. The LED lamp provided by the present disclosure can emit light on both sides, and truly realize 360° light emission.