SU569297A3 - Illuminating fixture with rectilinear luminescent lamps - Google Patents

Description

(54) LAMP WITH RECTAL LINE LUMINESCENT LAMPS

Sections that run at an angle of 45 to the longitudinal grooves 1. Teeth 3, ozovanye between the longitudinal grooves 1, are in the cross section of the triangles from the vertices 4.

The ridges S of oblique grooves 2 form the HI surfaces of the scatterer squares. The ridges 6 of each of the two longitudinal grooves 1 cut at opposite corners of these squares two isosceles triangles, the box sides of which are half the side of the square. Thus, in each square in its two opposite corners, triangular faces 7, bounded by the grooves, are formed, and between them a hexagonal prismatic body, limited by the faces of the grooves. The light stream passes through the lateral faces of 8 prismatic bodies and leaves under a given angle. Luminous efficiency also occurs through their end faces 9, the light reflecting effect of which is determined by selecting the angle of the oblique grooves 2. Prevention of viewing the internal fixtures of the luminaire is provided by a set of pyramids 7 surrounding each prismatic body and providing a glossy effect.

In this embodiment, six surfaces of the prismatic body and six surfaces of the two pyramids, i.e., are located within each square of the diffuser, limited by oblique grooves. twelve surfaces forming an aggregate structural element. An increase in the number of refractive surfaces of the structural element reduces the visibility of the internal parts of the lamp.

According to one of the possible embodiments (see Figs. 5-7), the faces of the longitudinal grooves 1 have a fracture 10. The angle of the ridge 11 of the longitudinal grooves 1 is 90 °, and the angle at the apex of the 12 teeth located between two such grooves is about 130 °. The indicated angles are selected taking into account the specified conditions of dispersion of the luminous flux of the lamp. At this point, the edges of the oblique grooves 2 also have a fracture 13, and the angle of their ridge 14 is 90. The fracture lines 10 and 13 protect the prismatic body and lie in a plane parallel to the base. As a result of this, both the face faces of the prismatic body and its lateral faces are divided into faces of 15 and 16 in different ways. Triangular pyramids 7 adjoin the prismatic body.

Alternatively, the isles (10 and 13) of the faces of the longitudinal and oblique grooves, respectively, are located closer to the base. As a result, a closed fracture line 18 appears on the lateral faces of the pyramids 17, dividing each face of the pyramid 17 into two surfaces, i.e. doubled the refractive surfaces of the pyramids. As a result, the total number of refractive surfaces of each

structural element of the lens reaches twenty-four.

In the third embodiment (see FIGS. 11-13), the angle at the apex of the 19 tooth located between the two longitudinal grooves is chosen to be 90 °, the angle of the ridge 20 of the grooves is 130 °, and the edges of the grooves have a concave lip 21. In such a constructive implementation of the diffuser, the surfaces of a prismatic body located below the fracture line 21 transmit light, while the surfaces located above the fracture line reflect it. The presence of reflective surfaces on the diffuser gives it an aesthetic identity.

The invention has been applied to luminaires with a different type of diffuser (cuvette, disk, tubular) made of silicate or synthetic glass.

In all the above examples, the pyramids and the prismatic bodies are convex elements that rise above the surface of the diffuser. However, the same effect can be obtained if these elements are executed in the form of recesses of the corresponding form.

The manufacture of diffusers according to the invention is simple. The longitudinal and oblique grooves can be filled with conventional tools, for example on steel plastics, which are then used directly as (tools for the manufacture of diffusers in case the structural elements must be recesses. If the structural elements are convex, then the necessary tools must be made in the form of impressions of processed auxiliary tools.

The structures according to the invention can be implemented both on the outer and on the inner side of the diffuser.

Claims (3)

1. A luminaire with rectilinear fluorescent lamps, equipped with a diffuser, on the surfaces of which is a family of parallel grooves parallel to the longitudinal axis, i.e. so that, in order to create preferential light scattering in the losing plane, the crests of the oblique grooves form squares in the horizontal plane, in which the diagonal and squares are parallel and M lamps pass longitudinal grooves so that the crests of each: the longitudinal grooves of the grooves are cut off against (this corner of the corners of the squares are two isosceles of the earplate, whose sides are aojitiuKtiy, the sides of the square, in order to form triangular pyramids, and between them a hexagonal prismatic body with inclined faces running parallel to the axes of the lamps and with beveled end faces. 2. The lamp according to claim. 1, which is different. in that the double-sided ridge angle is about 130 °. 3. The lamp according to claim 1, characterized in that the angle at the apex of the prismatic body is about 90 or 130 °. F1 / g. " PP9.3 Bv  6 . V / .S 15 sixteen ve.8 W Pig 7 17 Fig.Z Fg / g 10 2f S F1 / G.11 2t Fiig FIG. 13