Abstract: The fixture and shade, build together, for a tubular fluorescent lamp (20) comprises a shade provided with longitudinally extending limitation walls (10, 26) which on their inner-sides in cross sections follow a smooth concave curve. Within the shade transverse shade cross plates (12) are arranged evenly distributed along the length of the shade and fastened to the limitation walls (10, 26). A first and a second transverse shade and plate (18 and 16 respectively) are mounted one at each end of the shade. Said end plates (16 and 18) carries the sockets (48 and 50) necessary to receive the tubular lamp and defining between them the lamp axis (55) of the shade. The second end plate (16) is mounted at the one end of the shade limitation walls (10, 26), whereas the first end plate (18) is secured hereto in some distance from the opposite ends of these walls, at which ends the limitation walls are interconnected by a transverse outer wall (22).

Abstract: A lamp-shade for tubular lamps of outer diameter d, comprising two longitudinally extending, in cross sections evenly concavely curved, light reflecting side shade-faces facing each other and arranged on each side of a middle plane containing the axis of the lamp. The shade further comprising a number of light reflecting cross plates extending between the two side shade-faces evenly spaced along the length of the shade. The distance between the lamp and a plane through the lower edges of the side shade-faces being between 1.7 d and 3 d. Each side shade-face being evenly curved from an uppermost portion situated at a level higher than that of the upper side of the lamp and having a minimum distance from said middle plane not exceeding 0.6 d to the lower edge and is near the latter touching a plane parallel to the middel plane in a distance therefrom of between 1.3 d and 3 d. The lower border zone of each side shade-face having a height of between 0.2 d and 0.