LED RADIATION SOURCE FOR TRANSPORT CONTROL SYSTEMS

摘要

An LED radiation source comprises at least one or more semiconductor light emitters of monochromatic radiation in the ultraviolet or visible range, a light emitter holder to which outputs are connected, a radiator, and a cover lens. The semiconductor light emitters are coated with a phosphor, and the wavelength of the phosphor-coated light emitters is in a range of ?=405-460 nm, while the chromaticity coordinates thereof are in a range of X=(0.310, 0.315, 0.360, 0.360) ± 0.001, Y= (0.330, 0.310, 0.370, 0.350) ±0.01 or X=(0.360, 0.360, 0.470, 0.309) ± 0.001, Y= (0.370, 0.350, 0.3430, 0.460) ±0.01. The LED radiation sources have the advantages of LED devices, and their parameters show weak dependence on the temperature of the surrounding medium.