Opto-Electronics


LEDs for traffic message signs

4 August 2010 Opto-Electronics

Avago is supporting Standard EN 12966-1 for variable message traffic signs with new 5 mm extra high brightness LED lamps. The company’s new LED products to support the variable message traffic sign requirements for 15° and 30° viewing angles are the HLMP-Ex1A/1B-xxxDV (15°) and HLMP-Ex3A/3B-xxxDV (30°). They have luminous intensity ratings of 12 000 mcd (15° LEDs) and 5500 mcd (30° LEDs) and are available in red and amber colours.

The visual requirements of signs set the viewing angle of the LEDs. Signs installed on highways, for example, require bright LEDs with a narrow beam width, but in cities with a requirement for short distance legibility a wide beam width LED is usually required. Outdoor message signs must typically operate for over 10 years in a harsh, corrosive and exposed working environment. Avago’s new lamps are manufactured for outdoor signal and sign applications. The maximum LED junction temperature limit of +130°C enables high temperature operation in bright sunlight conditions. The lamp epoxy uses UV inhibitors to reduce the effects of long term exposure to direct sunlight.

For more information contact Thami Moitoi, Arrow Altech Distribution, +27 (0)11 923 9600, [email protected], www.arrow.altech.co.za



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