E Balance Co Ltd announced Aug 23, 2016, that it has remodeled the "Roommate" solar-powered electric fan for ventilating the interior space of a car and released it.
The fan can be easily attached to a rear window, and a solar panel can be placed anywhere in the car as long as sunlight is available. Because the fan is powered by solar electricity, it can be used even when the engine is not in operation.
The sizes of the fan and solar panel are approximately 15 x 11 x 6.2cm and 14 x 7.2 x 1cm, respectively. Their weights are about 202g and about 85g. The manufacturer's suggested retail price of the Roommate is ¥10,800 (approx US$105.5, including tax).