A powerful typhoon has delayed the opening of Japan's Ceatec electronics show on its third day.

Organisers delayed the opening from 10:00am to 1:00pm, local time, after most train services in the Tokyo region were postponed because of high rains.

Ceatec is Japan's largest electronics show and annually draws around 200,000 people to the Makuhari Messe convention centre near Tokyo. Most people travel to the venue by rail on the JR East's Keiyo Line, which is elevated and prone to delays and cancellations in bad weather.

Typhoon Melor has been approaching Japan for several days packing 45 metre per second (100 miles per hour) winds. Hundreds of trains and flights have been cancelled and at least one death reported from the typhoon, which is one of the most powerful to hit Japan for several years.