A standing lamp assembly having a support stand that can be set up on a base surface, an adapter part, and at least one light fixture (1; 10; 18; 19) with an elongated first illuminant (31; 310A, 310B; 319) and a light distribution panel (2; 20A, 20B; 29), wherein the adapter part is designed for fastening the at least one light fixture (1; 10; 18; 19) to the support stand, wherein the light distribution panel (2; 20A, 20B; 29) has an upper surface (21; 210A, 210B; 29), a lower surface (24; 240A, 240B; 249) corresponding to the upper surface (21; 210A, 210B; 29), and edge surfaces (22; 220A, 220B; 229) that connect the upper surface (21; 210A, 210B; 29) to the lower surface (24; 240A, 240B; 249), the first illuminant (31; 310A, 310B; 319) is associated with a first of the edge surfaces (22; 220A, 220B; 229) of the light distribution panel (2; 20A, 20B; 29), so that light irradiated by the first illuminant (31; 310A, 310B; 319) can be radiated through the first edge surface (221; 2210A, 2210B; 2219) into the light distribution panel (2; 20A, 20B; 29), wherein the first illuminant (31; 310A, 310B; 319) extends along the first edge surface (22; 220A, 220B; 229), the light distribution panel (2; 20A, 20B; 29) comprises a deflecting structure (23; 230; 239) via which the light irradiated by the first illuminant (31; 310A, 310B; 319) and radiated through the first edge surface (221; 2210A, 2210B; 2219) into the light distribution panel (2; 20A, 20B; 29) is deflectable so that it is irradiated through the upper surface (21; 210A, 210B; 29) or the lower surface (24; 240A, 240B; 249) of the light distribution panel (2; 20A, 20B; 29), the deflecting structure (23; 230; 239) of the light distribution panel (2; 20A, 20B; 29) is oriented at an angle relative to a first main irradiation direction (313; 3130B; 3139) of the first illuminant (31; 310A, 310B; 319), a second illuminant (32; 320A, 320B; 329) is associated with a second of the edge surfaces (22; 220A, 220B; 229) of the light distribution panel (2; 20A, 20B; 29), so that light irradiated by the second illuminant (32; 320A, 320B; 329) can be radiated through the second edge surface (22; 220A, 220B; 229) into the light distribution panel (2; 20A, 20B; 29), the light irradiated by the second illuminant (32; 320A, 320B; 329) and radiated through the second edge surface (22; 220A, 220B; 229) into the light distribution panel (2; 20A, 20B; 29) is deflectable by the deflecting structure (23; 230; 239) of the light distribution panel (2; 20A, 20B; 29), so that it is irradiated through the upper surface (21; 210A, 210B; 29) or the lower surface (24; 240A, 240B; 249) of the light distribution panel (2; 20A, 20B; 29), the deflecting structure (23; 230; 239) of the light distribution panel (2; 20A, 20B; 29) is oriented at an angle relative to a second main irradiation direction (323; 3230B; 3239) of the second illuminant (32; 320A, 320B; 329), and no illuminant (3; 30; 39) is associated with a third of the edge surfaces (22; 220A, 220B; 229) of the light distribution panel (2; 20A, 20B; 29), characterized in that the second edge surface (22; 220A, 220B; 229) adjoins the first edge surface (22; 220A, 220B; 229) of the light distribution panel (2; 20A, 20B; 29), and the second illuminant (32; 320A, 320B; 329) extends along the second edge surface (22; 220A, 220B; 229).