A New Invention for Extreme Heat in Japan: The Human Refrigerator

WORLD23.07.2026
A New Invention for Extreme Heat in Japan: The Human Refrigerator

A new product called a “personal cooling booth” has been launched in Japan, promising to completely cool its users within 10 minutes. The manufacturers claim the device is more effective than air conditioners or fans.
elchi reports that the personal cooling booth is 2.1 meters tall and made of stainless steel.
The personal cooling booth, called “Do Hiemon,” is designed to rapidly lower the body temperature of people exposed to extreme heat.
The internal temperature of the booth is lowered to 15 degrees Celsius, while 5-degree Celsius cold air is blown onto the user’s head, neck, shoulders, and back.
Manufacturers state that this method relieves symptoms of heatstroke and heat-induced fatigue faster than standard air conditioning or fans.
Global heatwaves and record-breaking temperatures are bringing new cooling solutions to the forefront.
The onset of “extreme heat” days in Japan, where thermometers show temperatures above 40 degrees, has influenced the development of such technologies. The device, which has a retail price of approximately 1.5 million yen, is said to have a very low hourly operating cost. Instead of personal use, its primary application areas are cited as places where emergency cooling is needed, such as factories, warehouses, or public spaces operating at high temperatures.

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