Waterproof Core Column Assembly with Nested Resistor Connection
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Solution Overview
Problem
Existing LED light bar bulbs are prone to short circuits due to exposure of the connection point between the resistor and guide wire, which is vulnerable to water infiltration when installed outdoors, leading to premature failure or burnout.
Innovation Solution
A waterproof core column assembly featuring a sealed support with vertically arranged filament channels, integrated resistors or CRDs in the light bars, and a design that encloses the connection point within the bulb cap, utilizing convex cylinders, a lifting platform, and annular grooves with waterproof rubber rings to prevent water ingress.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the connection point between the resistor and guide wire is exposed for installation convenience, then the installation process is simplified, but the bulb becomes vulnerable to water infiltration causing short circuits
Solution Approach 1:
The connection point between the resistor and guide wire is nested inside the bulb cap rather than being exposed externally. The resistor is positioned within the cap structure, allowing the connection to be enclosed and protected from water infiltration while maintaining accessibility during assembly.
Solution Approach 2:
A waterproof seal structure is implemented at the connection point using sealing elements that create a protective barrier. This sealing mechanism encloses the electrical connection, preventing water ingress while allowing the assembly to maintain its functional integrity in outdoor environments.
2Ease of manufacture
If a sleeve is added on the top of the support seat to insert the resistor, then the installation convenience is improved, but the connection point remains exposed and vulnerable to water infiltration
Solution Approach 1:
Instead of using an external sleeve that leaves the connection exposed, the resistor is nested directly within the bulb cap structure. This integration allows the connection point to be enclosed within the cap, eliminating the need for additional protective sleeves while maintaining easy installation access.
Solution Approach 2:
The support seat and bulb cap structures are merged or closely integrated, allowing the resistor installation location to coincide with the enclosed space within the cap. This consolidation eliminates the need for separate protective sleeves and ensures the connection point is naturally protected from water infiltration.
3Illumination intensity
If the bulb is installed with the bulb shell facing downwards for proper orientation, then the lighting function is optimized, but the connection point is exposed upwards and more susceptible to rainwater contact
Solution Approach 1:
Instead of protecting the connection point by orienting the bulb in a specific direction, the solution inverts the approach by enclosing the connection point within the bulb cap regardless of installation orientation. This ensures that the connection is protected from water infiltration whether the bulb is installed facing up, down, or at any angle, eliminating the need to compromise lighting function for protection.
4Device complexity
If rainwater accumulates on the top of the support seat, then the structure remains simple, but water infiltration and short circuit risks are aggravated
Solution Approach 1:
The connection point is nested within the bulb cap, creating a protected internal environment that prevents water accumulation from reaching the electrical components. This nesting approach maintains structural simplicity while effectively isolating the connection from rainwater infiltration and accumulation.
Solution Approach 2:
A waterproof seal is implemented at the connection point using sealing elements that create a protective barrier. This sealing mechanism prevents water accumulation on the support seat from infiltrating to the electrical connection, maintaining structural simplicity while ensuring reliable protection against short circuits.
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
Effectively prevents short circuits by enclosing the resistor-guide wire connection, ensuring the bulb's normal operation while maintaining a compact, cost-effective, and efficient waterproof structure suitable for outdoor use.
Implementation Method 1
An inner wall of the filament channel is provided with a plurality of annular grooves from top to bottom, and each annular groove is provided with a waterproof rubber ring
Data Source
AI summary
A waterproof core column assembly includes a sealed support, a guide wire and light bars, where two filament channels penetrating through a top surface and a bottom surface are vertically arranged in the sealed support, the guide wire penetrates through the filament channels, a plurality of light bars are connected by the guide wire and are all located below the sealed support, and a plurality of resistors or current regulative diodes are integrated in the light bars. The waterproof core column assembly integrates a plurality of resistors or current regulative diodes in the light bars besides the light source and the rectifier bridge, which can transfer the resistors from the upper part of the sealed support to the lower part of the sealed support and enclose them in a lamp cap, so as to fundamentally prevent the connection point between the resistors and the guide wire from being exposed.