EQUIPMENT, NAMELY, ELECTRICALLY POWERED UNITS HAVING LED (LIGHT EMITTING DIODE) LIGHTING APPARATUS FOR GENERATING AND DELIVERING RADIATION, FOR USE IN CURING LIGHT-CURABLE COMPOSITIONS IN INDUSTRIAL APPLICATIONS, NAMELY, FOR THE AEROSPACE INDUSTRY, THE AUTOMOTIVE INDUSTRY, THE ELECTRONICS INDUSTRY, THE OPTICS INDUSTRY, THE AUDIO SPEAKER INDUSTRY, THE ELECTRICAL MOTOR INDUSTRY, THE GLASS AND PLASTICS FABRICATION INDUSTRIES, AND THE MEDICAL DEVICES INDUSTRY; ELECTRIC BULBS