House number displaying device, has photo-voltaic solar cells converting solar energy that is collected during day into electric energy which is stored on rechargeable batteries which supplies electrical energy to lighting display

摘要

The device has photo-voltaic solar cells (1) e.g. mono-crystalline silicon cells, converting solar energy collected during day into electric energy which is stored on rechargeable batteries (2) e.g. nickel-hydride batteries. Organic light emitting diodes (OLEDs) display the number of a house and form an illuminating display (5) supplied by the batteries. A photo-sensitive sensor (4) detects fall of night and activates the display.