A refrigerator includes a thermally insulating internal container having an interior space, a refrigeration apparatus for cooling the interior space, and a door leaf arranged pivotably relative to the internal container for opening and closing the interior space. Arranged within the interior space is an internal lighting system for at least partially illuminating the interior space. The lighting system includes a conductor board having an electrical contact, a housing having a shaft which is open in a direction toward the interior space so as to allow the conductor board to be pushed into the shaft, and a lighting member arranged within the housing and fastened on the conductor board. An electrical line supplies electrical energy to the lighting member and is provided with an edge board plug which is electrically connected to the electrical contact of the conductor board for connecting the lighting member electrically to the electrical line.