rain filtrable umbrella / umbrella

Through the design of the upper part of umbrella, making a groove on the top of it to collect rainwater.
And there is a filter layer in the middle of the umbrella shaft, makes it filter and reuse rainwater.In particular,it is very suitable to be used in dry areas and where natural disaster takes place ,because of less water or the water is not clean.
So the design is a combination of rainwater collection, the function of the filter,can make people in the case of natural disasters to drink clean water and can improve the usage rate of water in dry areas.