The idea of using air flow to shield users from
pelting rain has been explored before. A pair of
designers developed a similar concept back in
2010, though this version seemingly never made it
to market.
The latest take on the Air umbrella uses a lithium
battery to power a motor and fan, which creates a
cycle of air flowing through its tip to deflect the
drops and form the protective layer. So how much
protection are we talking about exactly? Well, the
designers say at the current stage of development
the umbrella will provide enough shelter for two
people, though if the rain isn't too heavy more
people can be squeezed underneath.
The team is working on three models, all
resembling something of a detached shower head.
The first claims to be designed for females and is
30 cm (1 ft) in length and 500 g (1.1 lb) with a
battery life of 15 minutes. The second is 50 cm (1.64
ft) long, weighs 800 g (1.76 lb) and has a 30 minute
battery life. The third is extendable, ranging from
50 cm (1.64 ft) to 80 cm (2.62 ft), weighing 850 g
(1.87 lb), also with a 30 minute battery life.
With these battery times you wouldn't want to be
stranded in a rainstorm, but they might just be
enough to get you home from the bus stop without
becoming a cold, shivering mess.
The team is looking to raise US$10,000 on
Kickstarter for the production of its Air umbrella
and looks to be having reasonable success to date.
At the time of writing it has attracted almost
$12,000 in pledges with 10 days to run on the
campaign. Most of the early bird pledges are
already gone, with $108 the minimum pledge to
reserve the shorter "female" version of the
umbrella. Deliveries are slated to commence from
December 2015 if all goes to plan.

Source- https://www.kickstarter.com/projects/1243275397/air-umbrella

Airbrella should b a better name