Watertight LED arrangement

A method of manufacturing a watertight LED arrangement (1) extending in a longitudinal direction (L), comprising:

• obtaining an elongated LED board (3) extending in a longitudinal direction (L) and provided on its upper side with a plurality of LEDs (2) and having a predetermined length;
• connecting a cable (4) to the LED board (3);
• obtaining a substantially U-shaped first sheath region (6a) which is manufactured by extrusion from a watertight material and which forms an upper side defining a light emission wall (5) and at least parts of longitudinal sides of a sheath (6) of the LED arrangement (1) and has recesses (9) arranged opposite one another at a distance from the upper side and extending in the longitudinal direction (L) for receiving the longitudinal edges of the LED board (3) in a form-fitting manner;
• positioning the LED board (3) provided with the cable (4) in the recesses (9) of the first sheath region (6a) such that the upper side of the LED board (3) faces the light emission wall (5) and the free ends of the LED board (3) are arranged at approximately the same distance (a) from the free ends of the first sheath region (6a);
• closing end faces of the arrangement by inserting the assembly into a suitably formed casting mold;
• and
• casting a second sheath region (6b) forming at least a part of an underside of the sheath (6) and sealing the end faces of the sheath (6) using a watertight material.

A watertight LED arrangement (1) extending in a longitudinal direction (L), comprising:

• a strip-shaped LED board (3) provided with a multiplicity of LEDs (2) on its upper side;
• at least one cable (4) electrically connected to the LED board (3);
• and
• a one-piece, elastically formed watertight sheath (6) which surrounds the LED board (3) and defines a light emission wall (5) at least on its upper side opposite the LEDs (2), the sheath (6) receiving the LED board (3) in a form-fitting manner;
• wherein the sheath bears directly against the underside of the LED board (3), and a cavity (7) extending in the longitudinal direction (L) is provided between the upper side of the LED board (3) and the light emission wall (5);
• and
• wherein the LED board (3) is provided on at least one of its free ends with a sealing element extending upwards in the direction of the light emission wall (5), the sealing element being formed in a blade or a film.