Temperatures rises for LED thermometer
A Spanish firm has exploited LED technology to build a huge thermometer on the side of a building in Madrid.
The new installation replaces an earlier version that relied on 50 W halogen lamps, and is expected to lower energy consumption by more than 85% as well as making considerable savings on maintenance costs.
Each module incorporates 40 high-power LEDs, which are fitted with collimator optics that produce light emission over an angle of 40°. Individual modules consume 51 W of power and produce a luminous flux of 2040 lm at a wavelength of 617 nm.