A lighting apparatus provided in the form of a bulb for use in a solar lantern or other electrical device. The lighting apparatus includes a hollow light guide with a light reflective layer on the inside. A first and second light source such as an array of LEDs, LECs, etc. is positioned at opposite ends...http://www.google.ca/patents/US7972053?utm_source=gb-gplus-sharePatent US7972053 - Lighting apparatus
