Light strip system, comprising - an elongated carrier rail which extends along a longitudinal axis and, in a first approximation, has a U-shape when viewed in a cross-section normal to the longitudinal axis, such that a downward facing first U-leg, a downward facing second U-leg, and a connecting leg connecting the two U legs (2, 3) to one another are formed, wherein, in its inner region formed by the U-shape, the carrier rail comprises electrical conductors for supplying power to at least one lamp, - at least one lamp, which is configured to be connected to the carrier rail, wherein at least one through-opening (5, 5') is formed in the connecting leg of the carrier rail and the light strip system comprises at least one cover element configured to be mounted on the carrier rail to cover the at least one through-opening (5, 5'), wherein the cover element comprises two connecting regions (8, 9), which are configured to be disposed such that they are in contact with the carrier rail when the cover element is mounted, and a ceiling region, which is designed to connect the two connecting regions (8, 9) to one another, wherein the connecting leg of the carrier rail has a profiled structure that forms an upwardly open recess which comprises two lateral boundary regions and a floor region in which the at least one through-opening (5, 5') is configured, wherein a vertical distance is created between the floor region of the recess and the ceiling region of the cover element, wherein the cover element is elongated and the two corresponding end regions are designed such that the cover element can be connected in a sealing manner along its length to a further identical cover element, characterized in that the cover element comprises a sealing lip on at least one of the two end regions. - an elongated carrier rail which extends along a longitudinal axis and, in a first approximation, has a U-shape when viewed in a cross-section normal to the longitudinal axis, such that a downward facing first U-leg, a downward facing second U-leg, and a connecting leg connecting the two U legs (2, 3) to one another are formed, wherein, in its inner region formed by the U-shape, the carrier rail comprises electrical conductors for supplying power to at least one lamp, - at least one lamp, which is configured to be connected to the carrier rail, wherein at least one through-opening (5, 5') is formed in the connecting leg of the carrier rail and the light strip system comprises at least one cover element configured to be mounted on the carrier rail to cover the at least one through-opening (5, 5'), wherein the cover element comprises two connecting regions (8, 9), which are configured to be disposed such that they are in contact with the carrier rail when the cover element is mounted, and a ceiling region, which is designed to connect the two connecting regions (8, 9) to one another, wherein the connecting leg of the carrier rail has a profiled structure that forms an upwardly open recess which comprises two lateral boundary regions and a floor region in which the at least one through-opening (5, 5') is configured, wherein a vertical distance is created between the floor region of the recess and the ceiling region of the cover element, wherein the cover element is elongated and the two corresponding end regions are designed such that the cover element can be connected in a sealing manner along its length to a further identical cover element, characterized in that the cover element comprises a sealing lip on at least one of the two end regions. wherein at least one through-opening (5, 5') is formed in the connecting leg of the carrier rail and the light strip system comprises at least one cover element configured to be mounted on the carrier rail to cover the at least one through-opening (5, 5'), wherein the cover element comprises two connecting regions (8, 9), which are configured to be disposed such that they are in contact with the carrier rail when the cover element is mounted, and a ceiling region, which is designed to connect the two connecting regions (8, 9) to one another, wherein the connecting leg of the carrier rail has a profiled structure that forms an upwardly open recess which comprises two lateral boundary regions and a floor region in which the at least one through-opening (5, 5') is configured, wherein a vertical distance is created between the floor region of the recess and the ceiling region of the cover element, wherein the cover element is elongated and the two corresponding end regions are designed such that the cover element can be connected in a sealing manner along its length to a further identical cover element, characterized in that the cover element comprises a sealing lip on at least one of the two end regions.