Patent ID: 8251550
Filing Date: 2012-08-28
Classification: E01F,F21S,F21V,F21W,F21Y,H01L,Y02B

Abstract:
1. A combination of an illumination device and a road, comprising: a light source comprising an LED and an optical element optically coupled to the LED, light emitted from the LED being redirected to one side of the light source by the optical element at an angle θ in respect to a surface of the road, wherein, −30°≦θ≦+30°; a power storage device being electrically connected to the LED; a solar panel being electrically connected to the power storage device for converting energy of sunlight directly into electricity, and the converted electricity being stored into the power storage device; and a light pervious encapsulant, wherein the light source and the solar panel are packaged in the light pervious encapsulant; wherein the optical element comprises a funnel-shaped top surface and a straight vertical sidewall, the top surface is a total internal reflection surface, the LED is located at bottom of the optical element opposite to the top surface.