A motion transmission device for transmitting a linear motion between a first and a second component with a force limiter function, in particular applicable to a lighting device for vehicles, comprising a support for fixedly receiving the first component, an output shaft of the first component, axially mobile with respect to the support, a first shaft, configured to be constrained in use to the second component, and a mechanical connection device between the axially mobile output shaft and the first shaft; characterized in that the mechanical connection device comprises: i)- a cup-shaped body, slidably coupled with respect to the support in a direction parallel to the output shaft and coaxially thereto by means of at least one pair of lateral guides fixed to the support; the cup-shaped body being fixed with respect to the first shaft; ii)- a bushing, mounted inside the cup-shaped body, which is coaxial and slidable with respect thereto, the bushing being axially constrained in a fixed way to the output shaft so as to move integrally therewith; iii)- at least one pair of radial holes, made in a radially inner lateral surface of the cup-shaped body, said lateral surface cooperating with the bushing; iv)- at least one pair of opposed pegs, housed so that they can slide within respective radial seats of the bushing, which are provided within said bushing, and until they pass through a radially outer lateral wall of the bushing, the radial seats further housing first springs which cooperate with the pegs, the first springs and the radial seats being configured to cause the pegs to selectively assume an extracted position, in which a first end of the pegs radially projects in a cantilever fashion from the bushing to engage said radial holes of the cup-shaped body and fix the cup-shaped body to the bushing, and a retracted position, in which the first end of the pegs is at least partially housed in a concealed fashion in the radial seats against the action of the first springs so as not to engage the radial holes of the cup-shaped body; and v)- second springs, packed between the support and the cup-shaped body and between the support and respective shoulder elements, which are fixed to the cup-shaped body and are arranged, with respect to the support, on the side opposite to the cup-shaped body; vi)- the first ends of the pegs being delimited by respective surfaces, arranged obliquely with respect to an axis of symmetry of the output shaft and of the bushing and configured to cooperate with a perimetral edge of said radial holes so as to push the pegs towards the retracted position, against the action of the first springs, as a result of any axial load applied in use to the first shaft that exceeds a threshold value, so that, in the retracted position of the pegs, the bushing is no longer axially constrained to the cup-shaped body and is free to translate axially with respect thereto together with the support. i)- a cup-shaped body, slidably coupled with respect to the support in a direction parallel to the output shaft and coaxially thereto by means of at least one pair of lateral guides fixed to the support; the cup-shaped body being fixed with respect to the first shaft; ii)- a bushing, mounted inside the cup-shaped body, which is coaxial and slidable with respect thereto, the bushing being axially constrained in a fixed way to the output shaft so as to move integrally therewith; iii)- at least one pair of radial holes, made in a radially inner lateral surface of the cup-shaped body, said lateral surface cooperating with the bushing; iv)- at least one pair of opposed pegs, housed so that they can slide within respective radial seats of the bushing, which are provided within said bushing, and until they pass through a radially outer lateral wall of the bushing, the radial seats further housing first springs which cooperate with the pegs, the first springs and the radial seats being configured to cause the pegs to selectively assume an extracted position, in which a first end of the pegs radially projects in a cantilever fashion from the bushing to engage said radial holes of the cup-shaped body and fix the cup-shaped body to the bushing, and a retracted position, in which the first end of the pegs is at least partially housed in a concealed fashion in the radial seats against the action of the first springs so as not to engage the radial holes of the cup-shaped body; and v)- second springs, packed between the support and the cup-shaped body and between the support and respective shoulder elements, which are fixed to the cup-shaped body and are arranged, with respect to the support, on the side opposite to the cup-shaped body; vi)- the first ends of the pegs being delimited by respective surfaces, arranged obliquely with respect to an axis of symmetry of the output shaft and of the bushing and configured to cooperate with a perimetral edge of said radial holes so as to push the pegs towards the retracted position, against the action of the first springs, as a result of any axial load applied in use to the first shaft that exceeds a threshold value, so that, in the retracted position of the pegs, the bushing is no longer axially constrained to the cup-shaped body and is free to translate axially with respect thereto together with the support.