A light emitting diode (LED) warning signal light, the warning signal light comprising an array of light sources configured on a light support and in electrical communication with a controller and a power supply, battery, or other electrical source. The warning signal light provides various colored light...http://www.google.es/patents/US6788217?utm_source=gb-gplus-sharePatente US6788217 - LED warning signal light and light support having at least one sector
LED warning signal light and light support having at least one sector