OUTFIELD BREEZE BOX: Review of a Portable Air Conditioner for Sleeping in a Vehicle

The Japan RV Association (JRVA) will exhibit at Tourism Expo Japan 2026, held from September 24 to 27 at Tokyo Big Sight. The association will propose a travel style called 'drive tourism' (motorhome travel and sleeping in vehicles). According to JRVA, the number of motorhomes in Japan has increased from 100,000 in 2016 to 173,000 in 2025, driven by rental growth and inbound demand.

Japanese YouTuber Kazussh spent a night in a Tesla with the air conditioning on in camp mode. Over 7.5 hours at a set temperature of 22°C, including watching a movie, the battery level dropped by about 15%. He notes that an EV produces no exhaust or vibrations, allowing the AC to run while parked, but cautions that features may vary by model.

A resident of Aomori Prefecture, who moved from Chiba, has launched a crowdfunding campaign to raise 5.5 million yen for a used kei-class camper with '8' number plates to film and document little-known locations across the prefecture over all four seasons. The project includes monthly trips, photo and video reports, and the creation of a public archive. The campaign operates on an all-or-nothing basis.

In Kimitsu, Chiba Prefecture, the RV park 'LOHAS PARK' has opened, featuring 24-hour toilets, AC power, paid waste disposal, and free water. Amenities include a covered dog run (50×6 m), a cafe serving burgers, and an osteopathy clinic. Rates start at 2,200 yen per night, with 11 spaces, check-in from 15:00 to 21:00, and check-out by 11:00. The park is certified by the Japan RV Association and supports stays of up to a week.

On August 6, on the Shin-Tomei Expressway in Susono, Shizuoka Prefecture, a motorhome suffered a tire blowout, rolled over, and collided with the median barrier. The four occupants were not seriously injured. The cause is under investigation, with possible factors including tire aging, overloading, and excessive speed. Motorhomes are more prone to tire blowouts than regular cars because their weight often exceeds the tire's load index, especially in summer when tire temperatures rise. Due to their high center of gravity, they are more likely to roll over in a blowout at highway speeds. Owners are advised to check tire pressure and tread depth, avoid overloading, and maintain speeds around 80 km/h on expressways.

Illustrator Miyuki Ito, inspired by camper vans in New Zealand, converted a Suzuki Every kei van into a camper named 'Shirokuma'. She used affordable materials, including a children's mattress from IKEA and folding brackets, to create a functional space for sleeping, cooking, and working. Ito emphasizes that one doesn't need to be a DIY expert: ready-made solutions and a no-stress approach are key, such as skipping insulation if summer camping is avoided.