Semiconductor-type light source for vehicle lighting device, the semiconductor-type light source unit of a vehicular lamp, a vehicular lamp

摘要

PROBLEM TO BE SOLVED: To efficiently irradiate a light distribution pattern of a tail lamp and that of a stop lamp, respectively.SOLUTION: A vehicle lamp is provided with a substrate 3, five pieces of semiconductor light-emitting elements 40 to 44, control elements RS, RT, DS, DT, wiring elements 60 to 64, 601 to 641, 602 to 642, a surrounding wall member 18, and a sealing member 180. The five pieces of semiconductor light-emitting elements 40 to 44 are arranged in a straight line X-X. One semiconductor light-emitting element 40 of a stop lamp is arranged at a center O of the substrate. Two pieces of semiconductor light-emitting elements 41, 44 of the stop lamp are arranged at either end of the straight line on the substrate. Two pieces of semiconductor light-emitting elements 42, 43 of the tail lamp are respectively arranged between the one semiconductor light-emitting element 40 at the center O and the two pieces of semiconductor light-emitting elements 41, 44 at either end of the substrate. As a result, the light distribution pattern of the tail lamp and the light distribution pattern of the stop lamp can be efficiently irradiated, respectively.