Lighting device and motor vehicle light equipped with same

A light source (100) and a motor vehicle light (01) comprising at least one such light source (100) are described. The light source (100) comprises at least one OLED (20) as a light-emitting element. The light source (100) is characterized by at least one temperature control element (200) which is in at least thermally conductive contact with at least one OLED (20) of the light source (100). In the motor vehicle light, at least one such light source (100) is provided for fulfilling at least one of its lighting functions.