AC-Powered Silicon Light Regulation Apparatus for LED Color Temperature Control

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Solution Overview

Problem

The high cost of driving sources in illumination systems that use light emitting diodes (LEDs) for dimming color temperature is a significant issue, as they require conversion of alternating current to direct current, leading to increased expenses.

Innovation Solution

A controllable silicon light regulation apparatus that includes first and second light regulation circuits, capable of switching between segment dimming and linear dimming modes, using AC power without a driving power element, by regulating the driving current for LEDs based on detected phase angles and turn-on times to adjust color temperatures, incorporating surge protection, rectification filtering, and flicker protection modules.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If a driving source is used to convert alternating current to direct current for LED dimming, then color temperature regulation is achieved, but the cost increases significantly

Engineering Contradiction:

ImprovecostVSAvoiddriving source

Core Design Contradiction:

Ease of manufactureVSDevice complexity

Solution Approach 1:

The patent extracts and removes the driving source component from the LED illumination system. By using AC-powered LEDs that directly accept alternating current without requiring AC-to-DC conversion, the driving source is eliminated entirely, reducing both cost and device complexity while maintaining color temperature regulation functionality through alternative circuitry.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

Instead of the conventional approach of converting AC to DC and then controlling LED current, the patent inverts the approach by directly using AC power to control LED current. The light regulation circuit directly modulates the AC current to regulate LED brightness and color temperature, eliminating the need for AC-to-DC conversion and associated driving sources.

Inventive Principle:

Principle #13The other way round (Inversion)

2Ease of operation

If a driving source is used for AC to DC conversion, then LED operation is enabled, but the system complexity increases

Engineering Contradiction:

ImproveoperationVSAvoiddriving power element

Core Design Contradiction:

Ease of operationVSDevice complexity

Solution Approach 1:

The patent removes the driving power element from the system by implementing AC-compatible LED operation. The illumination system directly accepts AC input and uses a simplified light regulation circuit to control LED current, eliminating the driving source that would otherwise be required for AC-to-DC conversion and LED driver functions.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The patent inverts the conventional LED power supply architecture by eliminating the AC-to-DC conversion stage and directly using AC current to drive the LEDs. The light regulation circuit directly controls the AC current waveform to regulate LED operation, simplifying the overall system while maintaining full operational control.

Inventive Principle:

Principle #13The other way round (Inversion)

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

Enables cost-effective regulation of LED color temperatures by eliminating the need for a driving power element, allowing seamless switching between different color temperatures and reducing operational costs while maintaining efficient light emission.

Implementation Method 1

Light emitting diodes (LEDs) are widely used in illumination system based on properties such as energy-efficiency, greenness, controllability, and stability

Methodology Applied

Scientific EffectLight Emitting Diode: Light Emitting Diode

Implementation Method 2

regulating the driving current for LEDs based on detected phase angles and turn-on times to adjust color temperatures

Methodology Applied

Scientific EffectPhase angle detection:

Implementation Method 3

incorporating surge protection, rectification filtering, and flicker protection modules

Methodology Applied

Scientific EffectRectification:

Implementation Method 4

rectification filtering

Methodology Applied

Scientific EffectFiltering: Filter (electronic)

Implementation Method 5

incorporating surge protection, rectification filtering, and flicker protection modules

Methodology Applied

Scientific EffectSurge protection:

Implementation Method 6

incorporating surge protection, rectification filtering, and flicker protection modules

Methodology Applied

Scientific EffectFlicker protection:

Data Source

PatentUS10660181B1Controllable silicon light regulation apparatus

Publication Date: 2020.05.19 CHAMP TECH OPTICAL (FOSHAN) CORP

AI summary

A controllable silicon light regulation apparatus without a driving power element receives an alternating current (AC) from an AC source comprising a first light emitting diode (LED) source module and a second LED source module. The controllable silicon light regulation apparatus stores specified color temperatures. A difference between adjacent specified color temperatures is 100K. Under a segment dimming mode, the controllable silicon light regulation apparatus sets a segment value and selects a number of the specified color temperatures based on the segment value. A color temperature of the controllable silicon light regulation apparatus is gradually regulated in a loop of target color temperatures based on a counted number of turn-on times in a specified time duration of the AC source.