Abstract: The invention has a lamp arrangement (800), a casing (801) of the lamp arrangement, a cooling arrangement (814) and a light source unit (809). The light source unit has an elongated piece (811), to the side of which a light source (805) is attached, and a rear reflector (804). The elongated piece has a cooling channel (808), which extends through the light source unit. The light source unit has a reflective surface (806), which is arranged to reflect light in the direction of illumination, and additionally, the reflective surface is open in the direction of the rear reflector. Thus, light leaving from the light source in the direction of the rear reflector can be reflected by the rear reflector. Between the casing (807) of the light source unit and the casing of the lamp arrangement is a second cooling channel (802), which is in connection with the cooling arrangement.

Abstract: A lighting element for which it is possible to assemble various lighting arrangements includes at least one light source, a reflecting surface and elements for supplying power to the light source, which is kept substantially above the reflecting surface supported by a support element, whereby light emitted everywhere by the light source can be effectively utilized. The reflecting surface directs the light substantially in the lighting direction of the lighting element past the light source. Around the light source, there is a collar structure manufactured of light-reflecting material which controls the light substantially in the lighting direction. Covers and a stand of the lighting elements are designed such that it is possible to join the lighting elements together to form a lighting arrangement. In the reflecting surface, there can be a protrusion which reflects light fallen on it past the light source in the lighting direction. The light sources obtain their power via the support elements.

Abstract: A lighting element for which it is possible to assemble various lighting arrangements includes at least one light source, a reflecting surface and elements for supplying power to the light source, which is kept substantially above the reflecting surface supported by a support element, whereby light emitted everywhere by the light source can be effectively utilized. The reflecting surface directs the light substantially in the lighting direction of the lighting element past the light source. Around the light source, there is a collar structure manufactured of light-reflecting material which controls the light substantially in the lighting direction. Covers and a stand of the lighting elements are designed such that it is possible to join the lighting elements together to form a lighting arrangement. In the reflecting surface, there can be a protrusion which reflects light fallen on it past the light source in the lighting direction. The light sources obtain their power via the support elements.