Patent ID: 6737573
Filing Date: 2004-05-18
Classification: H02S,Y02E,Y10S

Abstract:
A backup power supply apparatus, comprising:a light absorbing device comprising at least one light absorbing element, one end of the light absorbing element formed with first pivotal shafts, another end of the light absorbing element formed with a second pivotal shaft, and a conductive element configured to be connected to adjacent ones of the light absorbing element, respective pairs of the first pivotal shafts are able to be rotatably connected to respective ones of the second pivotal shafts of adjacent light absorbing elements; a casing having a first cap and a second cap that are pivotally joined together with respective ones of the pivotal shafts of the at least one light absorbing element via a first pivotal lug and a second pivotal lug; and wherein the light absorbing element receives light from a light source and generates electric power required by a load, and the at least one light absorbing element is contained inside the casing when not in use.