A protective device made up of a padding material is arranged to include an EL strip and power pack to provide illumination for the device in addition to cushioning of impacts. The device can be worn as a calf, knee, or elbow pad, in which case a textile backpad and partially transparent or cutout ...http://www.google.fr/patents/US5688038?utm_source=gb-gplus-shareBrevet US5688038 - Protective device with E.L. light means
