Pay attention to the smartphone in your hip pocket, how to prevent fires September 14 at 14:38
"It's so hot that it's about to explode on a smartphone." "It's kind of hot to use a smartphone."
There are some voices on the internet who said they were about to accidentally handle smartphones incorrectly.
There was also an accident that caused burns when I looked it up.
Please know how to use it safely.
There are also hidden dangers in how you often see them.
(Network news department reporter Ken Memita Hiromi Akimoto)
Accident with a noticeable fire
"Smoke came out of the main body during charging, the tatami mat and the futon were scorched."
This is a fire accident involving a smartphone reported to NITE, an independent administrative agency, Product Evaluation Technology Infrastructure (NITE).
NITE has survey results on accidents involving products that use lithium-ion batteries such as smartphones.
There were 582 accidents in 5 years from 2013 to 2017.
The number of accidents has more than doubled in 5 years, and about 70% were accidents involving fires.
By product, mobile batteries are the most common with 150 cases, but smartphones also have 79 cases.
When I checked the accident on the smartphone, there was an accident that ignited during use.
"When I was watching the video, the main body swelled and suddenly a spark broke out, and I was burned
."
"When a child threw a smartphone, it ignited and the carpet burned."
Person in charge of NITE
"There is an accident every year. There are cases in which it was injured, so please be careful."
Strong impact in an accident
Then why do these accidents occur?
What you should be aware of is the lithium-ion battery used in smartphones.
A strong shock from the outside may cause a short circuit inside, leading to smoke or fire.
If you sit down with your smartphone in your pocket or under strong pressure, or if you accidentally drop it and give it a strong shock, smoke or abnormal heat may occur.
In an experimental video published by NITE, you can see that white smoke suddenly bursts with a popping sound when the smartphone bends as a result of mechanical pressure being applied to the central part of the smartphone.
Even when the smartphone is in the bag, if it comes into contact with other objects and is subjected to a strong shock, it may lead to an accident.
With a mobile battery
Such troubles are not limited to smartphones.
Lithium-ion batteries are also used in mobile batteries, which are often used for charging.
NITE has released an experimental video showing that when a mobile battery is thrown away as garbage and there is a strong impact in a garbage truck, it may catch fire or explode.
Lithium-ion batteries are subject to recycling and are collected by manufacturers and retailers of electric appliances, so please inquire for collection.
Person in charge of NITE
"It is important not to handle it incorrectly and to check if the product you are using has been recalled on the website of the manufacturer, NITE, or Consumer Affairs Agency. If it is recalled, there is no problem But please stop using it immediately."
Be careful of terminal damage and internal line load.
If you are not careful while charging, it will become hot and may cause burns.
At the National Life Center, we conducted an experiment to find out what happens if a foreign object enters the terminal while charging.
When you look at it with a special camera, the connection part of the terminal is red or white and it shows that it is over 100 degrees.
Introduce measures with photos
The mobile computing promotion consortium = MCPC, which is affiliated with 182 mobile communication related companies such as the three major mobile phone companies, introduces the measures and precautions to prevent accidents through videos and photos on its website.
I will introduce some of them.
Be careful when in hot weather or at bedtime
It is important to note that it may be used in places with high temperatures or heat, such as in hot weather, or when watching a video while charging, you may fall asleep and your smartphone may come into contact with your skin for a long time.
Although the smartphone is designed to radiate heat from the surface even if internal components generate heat, it hinders heat dissipation when the temperature is high or the surface is covered.
By the way, according to a survey conducted by the Tokyo Metropolitan Government to about 1,000 people (2015), there were 356 people who put their smartphones on their beds or futons while sleeping.
Of these, 187 people are charging each time, calling attention to the possibility of low-temperature burns.
Be careful of adhesion of drinking water, etc.
If drinking water, sweat, etc. adhere to the charging connector, it may cause a short circuit inside the connector, causing the connector to generate heat and resulting in burns.
Do not allow water to adhere to places where water is used, such as washrooms and kitchens.
Be careful of connector damage
If the charging connector is damaged or deformed, the connector may generate heat and may cause burns.
It is dangerous to use it by returning it to the original state, and we want you to stop using it.
Pay attention to your smartphone in your pocket
In addition, strong force applied to smartphones and mobile batteries may cause smoke and fire.
As I did during NITE's experiment, be careful when sitting in your trousers or skirt pocket, when you have a strong impact from falling or stepping on it, or when your pet bites you. I'm calling for attention.
Misuse and dangerous handling of a convenient smartphone can lead to a fire accident.
be careful.