Qingdao subsea tunnel will be installed for at least 15 years of high-power LED lamp, completed in February 2011

Before the Qingdao subsea tunnel in Jiaozhou Bay Tunnel all through the land connection part, subsea tunnel pavement construction officially entered the bidding process. At the same time, the interior of the tunnel will be a large power LED lighting, lamp life of up to 15 years.

Project construction unit according to the relevant person in charge of the tunnel lighting the road all year round is about 7800 meters, including the tunnel entrance lighting and strengthen the middle Duan Zhaoming. The technical specification of high power LED lighting for tunnel has not been formed in the world at present. In order to ensure the quality of tunnel LED lighting, the relevant departments in the bidding stage is devoted to the technical indexes of the tunnel use lamps, made detailed requirements, which requires the selection of LED device package structure low thermal resistance, good heat dissipation, low stress, the service life of not less than 30 thousand hours. The lamp life requirements of more than 15 years, all lamps and related devices to achieve the domestic first-class level. Tunnel lighting is expected to be fully installed in 2011, February.