Tech Sanyo's ‘Human washing machine’

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A futuristic "human washing machine" that once caused a sensation at the 1970 Japan World Exposition is set to make a comeback at the upcoming Osaka Kansai Expo in April 2025. The original machine, exhibited by Sanyo Electric Co. (now Panasonic Holdings Corp.), failed to gain commercial success. However, Osaka-based showerhead maker Science Co. is now developing a new version incorporating cutting-edge technology.

This "Mirai Ningen Sentakuki" (未来人間洗濯機 human washing machine of the future) will be showcased at the Osaka Healthcare Pavilion. Visitors to the expo will have the chance to experience this futuristic device firsthand. The company is also planning to release a home-use version of the machine. "We're about 70% of the way there," said Yasuaki Aoyama, the company chairman, during a lecture on October 23. "We plan to offer 1,000 general visitors an opportunity to use it during the expo."


Mirai Ningen Sentakuki (未来人間洗濯機)


Aoyama said seven to eight people will be able to experience a "wash-and-dry" job each day. The company accepts reservations on a special page of its website. The human washing machine is shaped like the cockpit of a jet fighter. It even has a transparent cover that opens to the back. When the bather sits in the seat in the centre, the device partially fills with hot water. Sensors embedded in the seat measure the person's pulse and other biological data to ensure the bather is washed at an appropriate temperature. At the same time, an AI system determines whether the user is calm or excited and projects images inside the transparent cover to help the person feel refreshed. A wash and dry takes 15 minutes. Sanyo Electric's human washing machine exhibited during the 1970 event was called Ultrasonic Bath. When the bather sat inside the egg-shaped tub, it automatically filled with hot water and emitted ultrasound waves. It also released plastic balls to massage the person's body.




 
Yamada Holdings said it plans to showcase a "human washing machine" at its main store in Tokyo's Ikebukuro district, a device that drew considerable attention at the Osaka Expo. The company announced on Wednesday that a demonstration model of the Mirai Human Washing Machine will be on display from 25 December, and visitors will be able to try it out in a small experience area.

Sanyo's Human washing machine

Yamada has not yet settled on a sales date, but indicated that the machine will be priced at around 60 million yen. The device was created by Science, an Osaka-based firm known for developing appliances that use fantastic bubbles in their cleaning technology.

By simply lying down in a 2.3-meter-long capsule, the bather is washed by the machine with microbubbles and a fine mist shower, with the whole process, including drying, completed in about 15 minutes. Sensors monitor a bather's health during use, while the machine provides relaxing visuals and music. More than 40,000 applications were submitted for the bathing experience at the expo, which ended in October.



Due to its novelty, the company plans to produce only about 50 units. Local media reports estimate the price at around 60 million yen (approximately $385,000).

How the Human Washing Machine Works
1. Enter the Capsule: The user lies down inside a 2.3-meter-long enclosed pod designed for a full-body wash.
2. Automatic Wash Begins: The machine uses microbubbles and a fine mist shower to gently clean the entire body.
3. Health Monitoring: Built-in sensors track the user's vital signs during the wash to ensure safety.
4. Relaxation Experience: While the wash is in progress, calming visuals and soothing music are played inside the capsule.
5. Drying Process: After washing, the machine dries the user automatically, completing the entire experience in around 15 minutes.
6. Exit Refreshed: The user steps out fully clean, relaxed, and monitored-no towels or manual effort needed.

 
A so-called "human washing machine" that attracted heavy attention at this year's World Exposition in Osaka is set to go on sale to the public in 2026. Its developer has indicated that deliveries to elderly care facilities will begin as early as March next year, ahead of wider consumer sales planned for the end of 2026.

Human washing machine

The machine was developed by Osaka-based bath and shower equipment maker Science Co. and is intended to make bathing easier for both users and caregivers, especially in care facilities. The company says it could significantly facilitate assisted bathing. It uses fine-bubble technology, creating tiny bubbles that can reach into small gaps on the skin. This allows the entire body to be washed without shampoo or manual scrubbing, with a single session lasting about 10 minutes that combines washing and drying.

The machine will be sold for 1.45 million yen ($9,200).

 
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