A LED lighting drive control circuit and control method thereof

Abstract

The invention relates to a light emitting diode (LED) illumination device control circuit and a control method thereof. The circuit comprises LED load provided with a constant current drive circuit, a switch electricity collecting unit and a control unit. One end of the switch electricity collecting unit is connected with one end of the LED load. The other end of the switch electricity collecting unit is connected with one end a direct-current power source. The other end of the direct-current power source is connected with the other end of the LED load. A power source output end of the switch electricity collecting unit is connected with a power source input end of the control unit. A signal output end of the control unit is connected with a signal input end of the switch electricity collecting unit. The control circuit solves the problem that an existing LED illumination device control circuit can not be directly used on an existing two-wire system illumination circuit which is laid and solves the problem of heat dissipation of the LED load so that the LED load can be controlled to switch on or off and pulse-width modulation (PWM) lighting adjustment can be performed to the load so that using is convenient, the LED load can work reliably and steadily and popularization of LED illumination can be achieved under a prior condition.

Description

Technical field [0001] The invention relates to a control circuit and a control method thereof, in particular to an LED lighting drive control circuit and a control method thereof. Background technique [0002] The existing LED lighting drive control circuit is usually set in the LED load, such as figure 1 As shown, including AC / DC conversion circuit and drive circuit, the turn-on and turn-off of the LED load is controlled by an external switch. The heat emitted by the AC / DC conversion circuit and the driving circuit is superimposed on the heat emitted by the LED device itself, especially LED bulbs and LED fluorescent lamps, although the appearance is similar to traditional incandescent lamps and fluorescent lamps, it is beneficial to the public with traditional awareness Acceptable, but the limited space is crowded with various parts, and the heat cannot be dissipated in a very effective and timely manner, which will increase the failure, accelerate the light decay of the LED, a...

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved in the present invention is to provide a LED lighting drive control circuit and its control method, to solve the problem that the existing LED lighting drive control circuit cannot be directly used on the existing lighting lines that have been laid, and to solve the heat dissipation of the LED load The problem is that it can not only control the LED load to turn on or off, but also perform PWM dimming control on the load, so that the LED load can work reliably and stably, and promote the popularization of LED lighting under the existing conditions.

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