Compact LED Illumination Device with Frustoconical Redirector
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Solution Overview
Problem
Conventional light sources, such as incandescent and fluorescent bulbs, are inefficient and bulky, limiting their use in compact form factors, while LEDs offer energy efficiency and compactness but were initially expensive and had limited intensity and color options, making them unsuitable for many applications.
Innovation Solution
A compact light emitting device featuring a frustoconical redirector with microstructured angled steps and a power source housed within, utilizing a plurality of LEDs arranged around the redirector's axis to project light efficiently, with charging and control features integrated into the design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If conventional incandescent or fluorescent bulbs are used, then illumination intensity and color options are available, but the device size and power consumption increase
Solution Approach 1:
The patent uses multiple LEDs with different color temperatures (e.g., 6504K, 3000K, 2700K) to achieve various color outputs, changing the spectral parameters of light emission. This allows compact LED modules to provide diverse illumination options previously only available from larger incandescent or fluorescent sources
Solution Approach 2:
The patent embeds multiple LED chips, phosphor materials, and optical elements within a compact modular housing. The nested arrangement of LEDs, reflectors, and lenses in integrated modules achieves high illumination output in a small form factor, resolving the contradiction between light output and device size
2Illumination intensity
If conventional incandescent or fluorescent bulbs are used, then illumination functionality is provided, but power consumption increases
Solution Approach 1:
The patent employs LEDs with varying color temperatures and luminous efficacies to optimize power consumption for different illumination needs. By selecting appropriate LED parameters (color temperature, luminous flux, forward voltage), the system achieves required light output with significantly lower power consumption than conventional bulbs
Solution Approach 2:
The patent incorporates dimming control circuitry that dynamically adjusts LED current to match illumination requirements. This dynamic power management allows the system to consume only the necessary amount of power for each application scenario, further reducing overall energy usage while maintaining required illumination levels
3Volume of moving object
If LEDs are used in compact form factors, then energy efficiency and compactness are achieved, but initially cost and functionality are limited
Solution Approach 1:
The patent designs universal LED modules that can provide multiple functions: different color temperatures for various lighting scenarios, integrated power sources for portable operation, and multiple output modes (steady state, flashing, dimming). This multi-functionality in compact form factors resolves the contradiction between compactness and versatility
Solution Approach 2:
The patent divides the illumination system into modular LED units, each capable of independent operation with its own power source and control circuitry. This segmentation allows flexible configuration and combination of modules to achieve diverse functionalities while maintaining compact individual unit sizes
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 device provides a compact, efficient, and versatile lighting solution with adjustable brightness and charging capabilities, suitable for various applications beyond traditional light fixtures, leveraging the advantages of LEDs in a scalable and adaptable form factor.
Implementation Method 1
The redirector includes a microstructure of a plurality of angled steps disposed about the frustoconical shape
Implementation Method 2
a light source disposed around the redirector proximate the first end of the redirector about the axis, where the light source is powered by the power source and is configured to project light substantially parallel to the axis
Data Source
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AI summary
A light emitting device is provided that is generally configured to have a compact shape and a broad pattern of light emission. An example light emitting apparatus (100) may include: a redirector (160) disposed about an axis, the redirector (160) having a first end (164) and a second end (162), where the first end (164) is narrower than the second end (162), the redirector (160) defining a cavity (230) between the first end (164) and the second end (162); a power source (240) at least partially disposed within the cavity (230) defined by the redirector (160); and a light source (170) disposed around the first end (164) of the redirector about the axis, where the light source (170) is powered by the power source (240) and is configured to project light substantially parallel to the axis, toward the second end (162) of the redirector. The redirector (160) may include a frustoconical shape.