Illuminating Device Red LED Current Control
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Solution Overview
Problem
Existing illuminating devices with blue light emitter diodes or combinations of UV and fluorescent bodies suffer from poor color rendering and reliability issues due to sulfide corrosion and reduced lighting efficiency when attempting to mimic natural sunlight, as they deviate significantly from the natural sunlight spectrum.
Innovation Solution
The device incorporates a red lighting component with a current limiting component in series and parallel connection with a lighting component, using a fluorescent body with yellow powders to mix light emissions, controlling the input current to achieve high color rendering and efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If more blue light energy is transformed to red light to promote color rendering, then color rendering is improved, but lighting efficiency deteriorates
Solution Approach 1:
The patent segments the light source into multiple independent wavelength components (blue light-emitting diode for 430-480nm, red light-emitting diode for 600-680nm, and yellow fluorescent powder), allowing each component to contribute optimally to color rendering without energy loss from inefficient transformation
Solution Approach 2:
The patent uses a composite light source system combining different light-emitting materials (blue light-emitting diode, red light-emitting diode, and yellow fluorescent powder) to achieve full-spectrum white light with high color rendering and high lighting efficiency simultaneously
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
This configuration produces a white light with improved color rendering and lighting efficiency, maintaining brightness while enhancing color accuracy by adjusting the red light's power through current control, thus overcoming previous reliability and efficiency limitations.
Implementation Method 1
a fluorescent body to receive and triggering the light emitted by said lighting component
Implementation Method 2
said fluorescent body receiving and triggering the light emitted by said lighting component is mixed with the light emitted by said red lighting device to emit a white light
Data Source
AI summary
The illuminating device of the invention comprises at least one lighting component, red lighting component, current limiting component and fluorescent body, wherein said red lighting component is first series connected with said current limiting component, and further parallel connected with said lighting component, so that input current to red lighting component is controlled by said current limiting component to be smaller than input current to lighting component, thereby said fluorescent body receiving and triggering the light emitted by said lighting component is mixed with the light emitted by said red lighting device to emit a white light with high lighting efficient and high color rendering white light.