External window anti-glare device

The invention discloses an external window anti-glare device. A light angle sensor installed outside a window provides an incident light angle signal to a controller to control a stepping motor to move, the stepping motor drives light reflecting louver blades at the topmost layer of a louver window to rotate through a linkage device, and then the other blades are driven to rotate through rotating curtain connection lines connected between all blades to achieve a purpose of driving all light reflecting louver blades on the louver window to rotate; and a solar cell panel installed outdoors is connected with a control panel to provide driving force for the control panel and a motor. According to the external window anti-glare device, the structure is simple, installation is convenient, use is convenient, and the reliability is good; and the external window anti-glare device can not only meet the needs of directly benefit of external window lighting and sunlight incidence, but also can solve the problem that large area window opening is prone to generate glare, meanwhile, the light environment in a classroom can also be improved, the energy consumption of electric lighting is reduced, market potential is great, and in the solar energy use industry, the external window anti-glare device has huge economic and social benefits of promotion and application.