Light indicator which comprises a support structure provided with multiple seats, each of which housing at its interior rows of LEDs and a power supply circuit providing electrical power supply to the LEDs. The light indicator also comprises collimation lenses each positioned in front of the corresponding row of LEDs, and an insulating material layer deposited in each seat to cover the power supply circuit. Each lens extends parallel to the corresponding row of LEDs, and on the rear part is provided with an abutment portion fixed on the base surface of the seat and provided with a rear groove housing the row of LEDs. The abutment portion of each lens is closed transversely and longitudinally by longitudinal and transverse walls defining a rear edge which adheres to the base surface of the seat in order to prevent the insulating material from penetrating into the rear groove.