Portable Cooling Unit Offers Relief from Extreme Heat in Japan

Trusco Nakayama has developed a portable cooling chamber, known as the Do Hiemon Box, which circulates air cooled to 5°C (41°F). This temperature is comparable to that found inside a standard refrigerator, offering a rapid cooldown for individuals. The device is designed for mobility, featuring wheels for easy relocation, and requires only a standard electrical outlet for operation.

The manufacturer states that the unit provides a more uniform cooling experience for the entire body compared to other available solutions. To prevent over-exposure to cold, the chamber automatically deactivates after 20 minutes of use, at which point the individual can exit the unit.

Since its introduction earlier this year, several hundred of these units have been sold across various locations in Japan. Construction sites, golf courses, leisure facilities, and university campuses are among the establishments that have acquired the Do Hiemon Box.

The device is priced at 1.5 million yen, which translates to approximately $9,480 USD, £7,040 GBP, or AU$13,460 AUD. This cost positions the personal cooling machine as a significant investment for potential buyers.

The primary intention behind the Do Hiemon Box is to provide immediate, temporary protection against heat exhaustion and heatstroke, which are increasingly prevalent concerns as global temperatures rise. It is not designed to serve as a permanent air-conditioned workspace or a prolonged relaxation area.

According to an executive from Trusco Nakayama, inquiries regarding the cooling chamber have originated from international markets, including Germany and the United States. The company is actively exploring opportunities to expand its market presence, particularly targeting summer festivals and shopping malls.

The growing demand for such specialized cooling solutions highlights an ongoing societal adaptation to the consequences of climate change. The presence of these "human fridges" at public events could become a more common sight as communities seek strategies to mitigate the health risks associated with extreme heat.