| 摘要 |
The invention relates to lighting engineering, and more specifically to light-emitting diode lighting devices, and can be used for indoor and outdoor localized and general lighting. The technical result of the invention consists in reducing the overall height of the light-emitting diode lighting device, increasing the luminance of the light-reflecting element and extending the range of possible uses for the light-emitting diode light sources, including light-emitting diodes with a wide angular light exit opening. The light-emitting diode lighting device comprises a profiled, cylindrical light-reflecting element; light-emitting diodes arranged along said light-reflecting element and having a maximum luminous flux directed along a line connecting the ends of the profile of the light-reflecting element, and a reflector, which is arranged along said light-reflecting element in such a way as to enable some of the luminous flux of the light-emitting diodes to be reflected onto the cylindrical surface of said light-reflecting element. The profile of the cylindrical surface of the light-reflecting element is designed in accordance with the mathematical expression given in the description, the surface of the light-reflecting element is in the form of a Lambertian surface or is equipped with a luminophore coating, and the surface of the reflector is mirror-coated. |
