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Japanese Firm’s ‘Human Refrigerator’ Offers Relief From Punishing Summer Heat

Trusco says demand is rising as tighter heatstroke rules and hotter summers drive use of the 15°C booth in workplaces and shelters.

  • Trusco Nakayama Corp. has sold about 200 Hiemon Box cooling booths priced at 1.5 million yen to steel mills, construction sites, and universities across Japan since launching earlier this year.
  • Japan's summers have become increasingly hot and humid, with temperatures regularly exceeding 35 degrees Celsius, prompting national broadcaster NHK and the country's weather agency to issue routine heatstroke warnings.
  • The Hiemon Box keeps the temperature at 15 degrees Celsius and blows jets of 5-degree air upon entry; Fumiaki Matsubara, general manager of Trusco's product division, said it aims to prevent heat-related conditions rather than provide rest.
  • Following last week's earthquake that struck Kumamoto, Trusco deployed units to evacuation shelters; the company has also fielded international inquiries from Germany and elsewhere, Matsubara said.
  • Tighter government regulations to prevent heatstroke are adding momentum as extreme heat becomes more common, with demand for workplace cooling products roughly doubling every year in recent years.
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Lean Right

Because of rising temperatures and extreme heat, a Japanese company invented a portable refrigerator for humans.

·Mexico
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Lean Right

Amidst a continuous heatwave, Bloomberg reported on the 4th (local time) that a "human refrigerator" has appeared in Japan, allowing a person to enter it to cool down. Japanese machine tool manufacturer Trusco Nakayama is producing and selling the "Do Hiemon Box," a refrigerator designed for humans. Large enough for one adult to fit inside, the product maintains an internal temperature of 15 degrees Celsius, and when a person enters, it emits 5-…

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(Seoul = Yonhap News) Reporter Kim Byung-kyu = Amidst the scorching heat raging day after day, a 'human refrigerator' in Japan, which a person can enter to cool down instantly...

·Seoul, Korea (the Republic of)
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Lean Right

New cooler should cool people in heat, but does not replace treatment.

·Berlin, Germany
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hna.de broke the news in Kassel, Germany on Tuesday, August 4, 2026.
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