The LEAF Thermometer is a thermometer that represents temperature with colour. When the temperature is between 20°C to 25°C, which should be comfortable without air conditioning, the thermometer will be a beautiful green colour. But if the temperature is too cold, it will change to a charred brown colour that's almost black. And if it's too hot, it will gradually change to yellow. Try sticking it on your window or wall. (On the back is a reusable adhesive seal.)
Designer: Hideyuki Kumagai
Designer Comment: Our living spaces are often too warm in the winter and too cool in the summer. Maybe we don’t have to use our air conditioners as much as we do. It occurred to me that if instead of using conventional thermometers with numbers, we could be made aware of the temperature in a more intuitive manner, not unlike the way we experience the transition from one season to another.