US 2025/0168945 A1Published application

Led light source simultaneously compatible with silicon-controlled-rectifier dimming and intelligent dimming, and lamp

AssigneeShenzhen Sunmoon Microelectronics Co., Ltd.

InventorZhaohua Li

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Abstract

An LED light source simultaneously compatible with SCR dimming and intelligent dimming is provided. A central control unit collects a SCR phase-cut angle of a power supply unit, generates a feedback signal according to the SCR phase-cut angle to an intelligent dimming unit; the intelligent dimming unit receives a control instruction, generates a dimming signal according to the control instruction and the feedback signal to a constant-current unit, and generates an adjustment signal according to the control signal to the central control unit; the constant-current unit adjusts light emitting state according to the dimming signal; the central control unit generates a SCR current control signal according to the SCR phase-cut angle or the adjustment signal to a SCR current output unit; the SCR current output unit adjusts an output current according to the SCR current control signal. Therefore, compatible control of SCR dimming and intelligent dimming can be implemented.

Claims14

Dependent claims

An LED light source simultaneously compatible with SCR dimming and intelligent dimming, characterized in that the LED light source comprises a power supply unit, an intelligent dimming unit, a constant-current unit, a SCR current output unit, and a central control unit, wherein an output terminal of the power supply unit is connected to an input terminal of the central control unit, an input terminal of the intelligent dimming unit and an input terminal of the constant-current unit, the central control unit is in bidirectional communication with the intelligent dimming unit, and an output terminal of the central control unit is also connected to an input terminal of the SCR current output unit, an output terminal of the intelligent dimming unit is also connected to an input terminal of the constant-current unit, and an output terminal of the SCR current output unit is connected to an input terminal of the power supply unit;

and wherein the central control unit is configured to collect a SCR phase-cut angle of the power supply unit, and generate a feedback signal based on the SCR phase-cut angle and send the feedback signal to the intelligent dimming unit;
the intelligent dimming unit is configured to receive a control signal from a IOT terminal, and generate a dimming signal based on the control signal and the feedback signal and send the dimming signal to the constant-current unit, and also configured to generate an adjustment signal based on the control signal and send the adjustment signal to the central control unit;
the constant-current unit is configured to adjust light emission state according to the dimming signal;
the central control unit is also configured to generate a SCR current control signal based on the SCR phase-cut angle or the adjustment signal and send the SCR current control signal to the SCR current output unit;
and the SCR current output unit is configured to adjust output current according to the SCR current control signal.

2 more elements

An LED lamp comprising an LED light source simultaneously compatible with SCR dimming and intelligent dimming, characterized in that the LED light source comprises a power supply unit, an intelligent dimming unit, a constant-current unit, a SCR current output unit, and a central control unit, wherein an output terminal of the power supply unit is connected to an input terminal of the central control unit, an input terminal of the intelligent dimming unit and an input terminal of the constant-current unit, the central control unit is in bidirectional communication with the intelligent dimming unit, and an output terminal of the central control unit is also connected to an input terminal of the SCR current output unit, an output terminal of the intelligent dimming unit is also connected to an input terminal of the constant-current unit, and an output terminal of the SCR current output unit is connected to an input terminal of the power supply unit;

and wherein the central control unit is configured to collect a SCR phase-cut angle of the power supply unit, and generate a feedback signal based on the SCR phase-cut angle and send the feedback signal to the intelligent dimming unit;
the intelligent dimming unit is configured to receive a control signal from a IOT terminal, and generate a dimming signal based on the control signal and the feedback signal and send the dimming signal to the constant-current unit, and also configured to generate an adjustment signal based on the control signal and send the adjustment signal to the central control unit;
the constant-current unit is configured to adjust light emission state according to the dimming signal;
the central control unit is also configured to generate a SCR current control signal based on the SCR phase-cut angle or the adjustment signal and send the SCR current control signal to the SCR current output unit;
and the SCR current output unit is configured to adjust output current according to the SCR current control signal.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application: 19/026,532Filed 17 Jan 2025
Priority: CN 202211004779.522 Aug 2022
Published: 22 May 2025
Term ends: Not estimatedThe source records don’t support an estimate.

Classification9 codes

H05B 45/14
Controlling the intensity of the light: using electrical feedback from LEDs or from LED modules
H05B 45/10
Circuit arrangements for operating light-emitting diodes [LED]: controlling the intensity of the light
H05B 45/31
Driver circuits: phase-control circuits
H05B 45/32
Driver circuits: pulse-control circuits

Family

Application19/026,532Continuation
US 12,684,664 B2Related patent
US 2025/0168945 A1This patent

From the US filing history. Foreign family members aren’t listed.

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