Rolling curtain type stage lights colour changer

The utility model relates to a rolling curtain type stage lights colour changer, composed of a mechanical part which is a colour changer and a circuit part which is a controller. A reducer is provided with a direct current motor, a friction wheel, a straight tooth gear, a cone gear, a grooved wheel, and a switch which is a sensor, and a driving mechanism comprises the cone gear and a driving shaft. The utility model has the advantages that because the reducer and the sensor are integrated, the rolling curtain type stage lights colour changer has small volume and light weight; because the circuit part adopts a digital control circuit, the reliability of control is enhanced consequently.