- Japan introduced a portable 'human refrigerator' cooling booth called the 'Do Hiemon Box' to combat extreme summer heat.
- The booth uses 5°C air directed at the head, neck, and shoulders, maintains an internal temperature of about 15°C, and automatically shuts off after 20 minutes.
- It is designed for outdoor workers, factory employees, and the public to prevent heatstroke during increasingly intense heatwaves.
- The unit is compact, resembling a vending machine, and can be moved between workplaces and public spaces on caster wheels.
- Usage has risen to over 30 people per day as temperatures increase, with users reporting immediate cooling relief.