Hollow Light Diverting Component for Omnidirectional LED Emission
Solution Overview
Problem
There is a need to convert the narrow angular light beam pattern of LED light sources into a wide angle light intensity distribution for omnidirectional lighting, as LED lighting is replacing incandescent bulbs and requires a solution to achieve a similar emission pattern to conventional incandescent light bulbs.
Innovation Solution
A wide angle emission LED assembly featuring a heat conductive substrate with central and surrounding LEDs, a hollow light diverting component that reflects light from the central LED to create a wide angle emission pattern, and optional features like heat dissipation fins and a transparent globe with scattering particles to enhance light distribution and color.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If conventional incandescent bulbs are replaced by LED lighting, then energy efficiency is improved, but the narrow angular light beam pattern of LEDs does not provide the wide angle emission required for omnidirectional lighting
Solution Approach 1:
The LED lighting system is segmented into multiple individual LED light sources arranged in a specific configuration. Each LED emits light in a narrow beam pattern, but the collective arrangement of multiple segmented LEDs creates a wide angle emission pattern that provides omnidirectional lighting, resolving the contradiction between LED energy efficiency and wide angle emission requirements.
Solution Approach 2:
The patent transitions from a single-point light source to a multi-dimensional array of LEDs positioned at different locations and orientations. By arranging LEDs in three-dimensional space with different emission directions, the system converts narrow angular beams from individual LEDs into a combined wide angle emission pattern, achieving both energy efficiency and omnidirectional lighting coverage.
2Illumination intensity
If multiple LEDs are arranged to create wide angle emission, then light distribution is improved, but heat management becomes more complex
Solution Approach 1:
Multiple individual heat management functions are merged into a single integrated heat sink structure that serves all LED components. The heat sink combines thermal conduction pathways, convection surfaces, and radiation areas into one unified thermal management system, efficiently dissipating heat from multiple LEDs simultaneously while maintaining their optimal operating temperatures and supporting improved light distribution.
3Illumination intensity
If a hollow light diverting component is used to reflect light, then wide angle emission is achieved, but device complexity increases
Solution Approach 1:
The hollow light diverting component is designed to perform multiple functions simultaneously: it reflects light from central LEDs to create wide angle emission, provides structural support for positioning LEDs at precise locations, and may serve as part of the heat management system. This multi-functionality reduces the need for separate components, thereby limiting the increase in device complexity while achieving the desired emission pattern.
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 solution efficiently converts the narrow angular light beam into a wide angle emission pattern, suitable for replacing conventional incandescent bulbs, while also providing effective heat management and potentially enhancing light quality and color.
Implementation Method 1
The hollow light diverting component is configured such that light emitted by the central LED is reflected off one or more inner surfaces of the hollow light diverting component to be discharged from the second opening
Implementation Method 2
The outer surface of the hollow light diverting component is configured to reflect light from the LEDs surrounding the central LED in azimuthal and circumferential directions towards a region below the second opening of the hollow light diverting component
Implementation Method 3
Positioned on the substrate surface are at least two light emitting diodes (LEDs)
Data Source
AI summary
A structure is provided to create an efficient light pattern conversion from a narrow angular light beam pattern of a light emitting source to a wide angle light intensity distribution for an omnidirectional lighting assembly. A heat conductive substrate includes an LED array with at least one central and at least one surrounding LED. A hollow light diverting component is positioned over the LED array; a central LED is within the hollow component while surrounding LEDs are positioned outside. Light emitted by the central LED is reflected off inner surfaces of the hollow component to be discharged from an upper opening. The outer component surface is configured to reflect light from the surrounding LEDs in azimuthal and circumferential directions towards a region below the upper opening. In this manner, plural LEDs are used to form a wide angle emission pattern suitable for use in conventional light bulb replacement devices.