Waterproof LED Bulb Assembly With Lens-Shaped Candelabra Optics
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Solution Overview
Problem
LED light bulbs do not provide the appearance or lighting effect of conventional light bulbs, especially when used in chandeliers or other outward-facing lighting assemblies, and are ineffective for outdoor use due to failure in wet conditions.
Innovation Solution
A waterproof light bulb assembly featuring a plastic shell with LED modules and a lens assembly that reflects and refracts light to resemble a traditional candelabra bulb, with heat regulation and a secure design to withstand outdoor and wet environments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If LED light bulbs are used to provide energy efficiency and longer lifetime, then power consumption is reduced and service life is extended, but the appearance and lighting effect differ from conventional light bulbs, especially in chandeliers and outward-facing lighting assemblies
Solution Approach 1:
The patent employs a plastic bulb shell that visually copies the appearance of a conventional glass light bulb, complete with a threaded portion for screw base attachment. This shell is designed to resemble traditional candelabra light bulbs, allowing LED technology to be disguised as conventional bulb aesthetics, thereby resolving the contradiction between energy efficiency and visual appearance.
2Illumination intensity
If LED light bulbs are oriented upwardly to provide spotlight effect, then lighting direction is controlled, but the bulbs fail in wet conditions and do not last long
Solution Approach 1:
The patent utilizes a plastic bulb shell that serves as a protective enclosure for the LED modules. This shell, combined with a waterproof seal between the shell and bulb cap, creates a barrier that protects the electronic components from moisture and environmental damage, enabling upward-facing LED configuration to be reliable in wet outdoor conditions.
Solution Approach 2:
The patent introduces a waterproof seal as an intermediary barrier between the LED light emitting assembly and the external wet environment. This seal, positioned between the bulb shell and bulb cap, prevents moisture ingress while allowing the upward-facing LED configuration to maintain its lighting effect, thus resolving the reliability issue in wet conditions.
3Shape
If conventional light bulbs are used in outdoor settings, then appearance is maintained, but they are not effective for outdoor use and fail in wet conditions
Solution Approach 1:
The patent combines a plastic bulb shell (non-corrosive material) with LED modules and waterproof sealing components to create a composite light bulb assembly. This composite structure maintains the visual appearance of conventional bulbs while incorporating materials and designs that resist corrosion and moisture, making it suitable for prolonged outdoor use without failure.
4Illumination intensity
If LED modules are configured inside the shell to provide equivalent lumens, then lighting output is maintained, but the assembly complexity increases to ensure waterproofing
Solution Approach 1:
The patent divides the light bulb assembly into distinct functional segments: a plastic bulb shell for appearance and structural support, LED modules for light generation, a bulb cap for electrical connection, and a waterproof seal for protection. This segmentation allows each component to be optimized independently while simplifying the overall assembly process and ensuring proper waterproofing through defined interfaces.
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 assembly provides a cosmetically similar appearance to conventional bulbs, is durable in wet conditions, and operates efficiently for extended periods without failure.
Implementation Method 1
the lens is configured to reflect and refract a light emitted from the light emitting assembly
Implementation Method 2
the lens is configured to reflect and refract a light emitted from the light emitting assembly
Implementation Method 3
LEDs have many advantages over incandescent light sources... LEDs produce light through electroluminescence
Data Source
AI summary
A waterproof light bulb assembly implements a plurality of light emitting diodes (LEDs) for use in light fixture in an outdoor or wet environment. The light bulb assembly includes a clear plastic bulb shell which used a threaded portion to mate to a bulb cap. The bulb cap includes a passage to receive a light emitting assembly having a direct current (DC) connector. The light emitting assembly includes the plurality of LEDs and a printed circuit board. The light bulb assembly also includes a lens assembly that is located above and cover the light emitting assembly. The lens assembly includes lens in a shape of upside-down pyramid seated on a top of a hollow cylinder. The hollow cylinder is inserted into the bulb cap and covers the light emitting assembly. The lens is configured to reflect and refract a light beam emitted from the light emitting assembly.