Waterproof LED Bulb Shell and Lens for Candelabra Appearance
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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 mimics a traditional candelabra bulb, including a lens to reflect and refract light, and a heat-regulating circuit to prevent failure in wet environments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If LED light bulbs are used to replace conventional light bulbs, then power consumption is reduced and lifetime is extended, but the appearance and lighting effect do not match conventional bulbs, especially in chandeliers or outward-facing lighting assemblies
Solution Approach 1:
The patent employs a hollow plastic shell that replicates the external appearance of a conventional glass light bulb, complete with a threaded portion for screw base compatibility. This shell serves as a visual copy of the traditional bulb form factor, allowing the LED assembly to be disguised as a conventional bulb when installed in chandeliers or outward-facing lighting fixtures, thus resolving the appearance mismatch while maintaining LED energy efficiency
2Shape
If LED light bulbs are oriented upwardly to match conventional bulb appearance, then aesthetic compatibility is improved, but reliability deteriorates in wet conditions
Solution Approach 1:
The patent utilizes a hollow plastic shell as a protective barrier that encloses the LED modules and electrical components. This plastic shell acts as a waterproof barrier that prevents moisture ingress while allowing the bulb to be oriented upwardly for aesthetic compatibility. The shell's material properties provide both structural integrity and environmental protection, enabling outdoor use in wet conditions without compromising reliability
3Ease of operation
If conventional light bulbs are used in outdoor settings, then ease of installation is maintained, but durability deteriorates due to corrosion and environmental failure
Solution Approach 1:
The patent employs a composite structure combining a hollow plastic shell with LED modules and a screw base assembly. The plastic shell provides corrosion resistance and environmental durability, while the LED modules offer long operational lifetime. This composite construction replaces traditional glass bulbs with a materials combination that is both easy to install (maintaining screw base compatibility) and highly durable for outdoor applications, eliminating corrosion and environmental failure issues
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 and withstands outdoor and wet conditions, lasting up to 10 years without maintenance.
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
LED is a semiconductor device that emits light when a current flows through it. Electrons in the semiconductor device recombine with electron holes, releasing energy in the form of photons. That is, the LED produces 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.