As record-breaking midsummer and scorching hot days continue to be recorded, manufacturers and the Consumer Affairs Agency are urging caution regarding portable fans, which are held in the hand or worn around the neck, as improper use could pose a risk of heatstroke and other accidents. We interviewed people about the three dangers that have been pointed out. The first is the risk of heat stroke. “In the hot sun, use a hair dryer to blow hot air… (The following is a paid version, 996 characters remaining) Asahi Shimbun, August 4, 2024, 5:00 a.m.
The reason they don’t take into account silly risks that an average Japanese person could imagine, like getting their hair caught in something, is because they are set at an Asian level.
From a different source, hot air is not good for you. > Miura Kunihisa, deputy director of Hikifune Hospital, points out that “if the outside temperature is over 35°C, >using a handheld fan can cause heatstroke.” > >If the outside temperature is too high, you will be exposed to hot air like a hair dryer.
>>12 That’s right, the principle is to blow away the air that has been warmed by the body’s temperature and cool it down + evaporate the moisture on the surface of the body and cool it down with the heat of vaporization so it’s extremely incompatible with the outside air, which is close to body temperature and has high humidity. In fact, if the outside temperature is higher, the heater will turn on.
The evaporative cooling makes you feel cool, but I wonder if it has the opposite effect because it carries away moisture and makes you more likely to collapse.
>>26 I use BURTLE’s 22v air-conditioned clothing every day. Even air-conditioned clothing becomes useless when the humidity exceeds 70. I wonder what you can do with a small fan that’s just a face.
>>40 I don’t think air-conditioned suits will be popular except for professional use. The biggest problem is that they will definitely make you bloated. Well, that’s natural, but it’s just a nuisance in crowded places or on trains. I think Peltier devices will become more common in the future. They’re only good for supplementary use at work, but they’re quite effective for everyday use without strenuous exercise.
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