Vehicle lighting device component (1; 101; 201; 301) comprising: - a component body (2; 102; 202; 302) comprising at least one fastening means (3, 4, 5; 103, 104, 105; 203, 204; 305) for fastening said component to a vehicle element, - a bearing element (10; 110; 210; 310) secured to said body (2; 102; 202; 302), separate from the fastening means (3, 4, 5; 103, 104, 105; 203, 204), and comprising a bearing surface, said component being intended to bear against a surface (7, 107, 207, 307) with said bearing surface when it is fastened by way of its fastening means (3, 4, 5; 103, 104, 105; 203, 204; 305), and said bearing element and said body being designed such that said bearing surface is able to move with respect to said body, - a damper (6; 106; 206; 306) designed so as to be able to damp a movement of said body, this movement of said body tending to move it toward or away from said bearing surface, said damper (6; 106; 206; 306) comprising at least one elastic means that is able to deform when said body (2; 102; 202; 302) tends to move toward or away from said bearing surface, characterized in that said damper (6; 106; 206; 306) comprises two elements that slide one in the other, one being secured to the body (2; 102; 202; 302) and the other being secured to the bearing element, the elastic means being arranged between two parts of these elements (2a and 13) so as to deform as a result of the movement of these elements with respect to one another when said body (2; 102; 202; 302) tends to move toward or away from said bearing surface, said element secured to said bearing element being a shaft and the element secured to said component body (2; 102; 202; 302) comprising an orifice, said shaft passing through said orifice, said elastic means being fastened on one side to said shaft and on the other to said component body so as to deform when said shaft moves through the orifice. - a component body (2; 102; 202; 302) comprising at least one fastening means (3, 4, 5; 103, 104, 105; 203, 204; 305) for fastening said component to a vehicle element, - a bearing element (10; 110; 210; 310) secured to said body (2; 102; 202; 302), separate from the fastening means (3, 4, 5; 103, 104, 105; 203, 204), and comprising a bearing surface, said component being intended to bear against a surface (7, 107, 207, 307) with said bearing surface when it is fastened by way of its fastening means (3, 4, 5; 103, 104, 105; 203, 204; 305), and said bearing element and said body being designed such that said bearing surface is able to move with respect to said body, - a damper (6; 106; 206; 306) designed so as to be able to damp a movement of said body, this movement of said body tending to move it toward or away from said bearing surface, said damper (6; 106; 206; 306) comprising at least one elastic means that is able to deform when said body (2; 102; 202; 302) tends to move toward or away from said bearing surface, characterized in that said damper (6; 106; 206; 306) comprises two elements that slide one in the other, one being secured to the body (2; 102; 202; 302) and the other being secured to the bearing element, the elastic means being arranged between two parts of these elements (2a and 13) so as to deform as a result of the movement of these elements with respect to one another when said body (2; 102; 202; 302) tends to move toward or away from said bearing surface, said element secured to said bearing element being a shaft and the element secured to said component body (2; 102; 202; 302) comprising an orifice, said shaft passing through said orifice, said elastic means being fastened on one side to said shaft and on the other to said component body so as to deform when said shaft moves through the orifice.