Had an idea for an invention, but I have zero understanding of technology and physics of light, so I need to know if this will work before I carry this forward.

Basically, it would be a spinning black sphere with ridges, attached to a pole. The black sphere would be designed to absorb all the light in the area which would get trapped inside the ridges. The spinning would make sure the maximum amount of light is being exposed to all sides at all times. You would put it in your yard, and it would be like a "Reverse flashlight" where all the light around you would be absorbed into the sphere, resulting in the creation of a natural shade. Perfect for a cool summer day.

Can anyone tell me if this makes sense or if there is anything that could be done to improve it before it can work like I posted?