Method of manufacturing a flexible longitudinal lighting device comprising the following steps: - a strip (8) of an
electrically conductive material is provided; - said strip (8) is
cut to form a plurality of plates (11) spaced apart from each other and successively connected to each other by two power supply elements (12) and at least two control elements (13), the plates (11) each having two
peripheral power supply terminals (15) opposite each other and at least four control terminals (16); - a plurality of electronic boards (9) are fixed respectively on the plates (11), each
electronic board (9) being connected to the
peripheral power supply terminals (15) and to the control terminals (16) on either side of the plate (11) on which it is fixed; - a plurality of intelligent light-emitting diodes (10) are fixed respectively on said plurality of electronic boards (9);- the said strip (8) is
cut so as to isolate the power supply elements (12) and the control elements (13) from each other; and, - the
assembly (7) is encapsulated in a flexible rod, said
assembly (7) comprising the strip (8), the plurality of electronic boards (9) and the plurality of intelligent light-emitting diodes (10). Figure to be published with the abbreviation: Fig. 3;