Patent ID: 8246194

Claim:
An illumination apparatus for lightening a road surface comprising: a light source configured for being mounted on the road surface, comprising at least one light emitting element and an optical element, wherein the light from the at least one light emitting element passes through the optical element and deflects to opposite sides of the light source, the light is emitted along an extension axis of the road surface asymmetrically distributed on the opposite sides of the light source along the extension axis of the road surface; an electrical power storage device, electrically connecting with the at least one light emitting element; a solar cell, electrically connecting with the electrical power storage device to convert sunlight into electricity stored in the electrical power storage device; and a transparent package, which encapsulates the light source and the solar cell therein; wherein the transparent package is a truncated cone-shape with a top surface and a side surface surrounding the top surface, the light source is mounted on the bottom of the transparent package and the solar cell is mounted on the top portion of the transparent package near the top surface of the transparent package.