A new lighting spanning the 1565-meter Songhuajiang Bridge over the Songhua River in Harbin, China is completed by Roled Opto Electronics Shanghai Co., Ltd. with the help of Future Lighting Solutions. This project utilizes 1,288 linear floodlights containing 12,000 LUXEON® Rebel LEDs.
LUXEON Rebel LEDs in the floodlights feature not only their proven long-term reliability, including the ability to withstand extreme local temperatures ranging from 28°C to -24°C that have given Harbin the nickname of "The Ice City," but also their considerations included the ability to run at a drive current of 700 mA, thereby reducing the LED count and associated costs required to generate the necessary light output, and assured LED supply under Future’s inventory management program.
Through LED illumination, energy consumption can be reduced by as much as 80% and provides a 50,000-hour lifetime that minimizes bulb replacement frequency in the difficult-to-reach bridge girders.
Additionally, Future Lighting Solutions assisted Roled with thermal and optical simulations as well as component recommendations including the National Semiconductor driver used in the system design.