The abbreviation of the English word LED, its main meaning is: LED=LightEmittingDiode, a light-emitting diode, is a solid-state semiconductor device that can convert electrical energy into visible light. It can directly convert electricity into light. The LED advertising projection light is a newly developed lamp by Casio. It uses the RGB and luminous properties of LED to create a lamp that can both illuminate and display the company's LOGO on the wall. Principle of Projector Light: Dynamic advertising picture projection lamp, advertising projection lamp, LOGO projection, pattern picture projection lamp series is a brand new advertising media. It is a kind of projection advertising. It uses high-brightness light source based on the optical projection principle of high-power projection equipment. With a variety of dynamic effect accessories, the advertising content on the produced light sheets is projected onto the projection advertising surface required by the customer to form an outdoor or indoor dynamic advertising effect with great visual impact.