Prefabricated tile with a plurality of light diffusion sites for realizing building roofings

Abstract: A prefabricated tile for covering building roofings comprises a plurality of side-by-side light diffusion sites (13) defined by openings (15) provided through a lower flat slab (11) of said tile. From said lower flat slab (11) mutually opposite side walls (12) extend upwards with decreasing height from the middle to the ends of said tile, wherein through said side walls (12) openings (14) are provided to make the whole structure lighter and allow service equipment to run through.

Description: The present invention relates to a prefabricated tile designed for producing building roofings, which tile displays the feature of being provided with a plurality of light diffusion sites arranged according to a particularly advantageous fashion. Those skilled in the art know very well that one of the technical problems to be solved when building roofings are made by using prefabricated tiles, is of securing a lighting system, for both day- and nighttime, which is as satisfactory as possible from both viewpoints of cheapness and quality of results. Another technical problem to be solved is providing a tile which is as light-weight as possible, while however displaying all required characteristics in terms of mechanical strength. US-A-2 892 516 and FR-A-1 538 520 relate to prefabricated tiles for building roofing according to the preamble of claim 1. Therefore, the general purpose of the invention is of solving the above said technical problems in a way which is as functional and advantageous as possible, by providing a tile which, besides being provided with a plurality of sites of (either day light or indoor light) light diffusion, simultaneously has a very light-weight structure. The above purpose is achieved according to the invention by providing a prefabricated tile for building roofing according to claim 1. The structural and functional characteristics of the invention and its advantages over the prior art will be particularly clear from a study of the following disclosure, made by referring to the accompanying schematic drawings, in which: Figure 1 shows a partially cutaway top plan view illustrating the tile according to the present invention, transversely cut at its middle for the sake of drawing simplicity, with the other half thereof being specular to the illustrated half-tile; Figure 2 shows a side elevation view of the tile of Figure 1; Figure 3 shows a sectional view made according to the section line III-III of Figure 1; Figure 4 shows a sectional view made according to the section line IV-IV of Figure 2; Figure 5 shows a sectional view made according to the section line V-V of Figure 2; Figure 6 shows a sectional view made according to the section line VI-VI of Figure 2; Figure 7 shows a sectional view on an enlarged scale, made according to the section line VII-VII of Figure 1; Figure 8 shows a vertical sectional view illustrating a building the roofing of which is made by using tiles according to the present invention, with said sectional view being made according to the section line VIII-VIII of Figure 9; Figure 9 shows a plan view of the building of Figure 8, in which the roofing of the right-hand bay, looking at the drawing, is seen from upwards, and the roofing of the left-hand bay is seen from underneath; Figure 10 shows a sectional view made according to the section line X-X of Figure 9; Figure 11 shows an enlarged detail of zone 1 of Figure 8; Figure 12 shows an enlarged detail of zone 2 of Figure 8; Figure 13 shows an enlarged detail of zone 3 of Figure 10; Figure 14 shows an enlarged detail of zone 4 of Figure 10; and Figure 15 shows an enlarged detail of the ridge zone of the tile. Referring to the drawings, the tile according to the present invention is generally indicated with the find numeral (10) and is structurally formed by a bottom flat slab (11) from which mutually opposite vertical walls (12) extend upwards with decreasing height from the middle to the ends (Figures 2-6). According to the present invention, the slab (11) is provided with a plurality of side-by-side light diffusion sites (13), and the mutually opposite side walls (12) are provided with openings (14) for reducing the weight of the tile and allowing service equipment to run through. Said light diffusion sites (13) can be used for allowing day light to penetrate the interior of the building, without the aid of any electrical apparatuses, and also for night time lighting by means of electrical light sources installed inside the interior of the tile, in such a way that indoor lighting simulates day light lighting. As one will clearly see from Figure 7 of accompanying drawings, the light diffusion sites (13) are defined by openings (15), which can be given a circular shape, as well as any other shapes, and are closed with a transparent diffuser (16) provided with a peripheral gasket (17). Figures 8-14 illustrate an exemplary building the roofing of which is made by using a plurality of tiles according to the present invention, installed side-by-side. As one will clearly see from the drawings, the tiles (10) can be closed atop by means of water-proofing elements (18) fastened to purlines (19) transversely extending relatively to the tiles (10). Those portions of said elements (18) which are opposite to light diffusion sites (13) are translucent. On the contrary, inferiorly, the space between the mutually spaced apart tiles can be closed, e.g., by means of polycarbonate panels (20) resting on teeth (21) outwards extending from the foot of the side walls (12) of each tile. In that way, a prefabricated tile for building roofings is provided which has a very light-weight structure and is provided with a lighting system by day light diffusion, as well as by indoor light diffusion. Additionally to the above, the tile according to the present invention makes it possible a flat ceiling to be realized, with an upper hollow space for insulation purposes.

Claims: Prefabricated tile for building roofing, wherein it comprises a plurality of light diffusion sites (13) arranged side-to-side, defined by openings (15) provided through a lower flat slab (11) of said tile, characterized in that from said lower flat slab (11) mutually opposite side walls (12) extend upwards with decreasing height from the middle to the ends of said tile, wherein, through said side walls (12) openings (14) are provided to make the whole structure lighter and allow service equipment to run through. Tile according to claim 1, characterized in that said openings (15) are circular openings. Tile according to claim 1, characterized in that at its light diffusion sites (13) it is provided with a top closure made of translucent water-proofing elements (18) extending between said side walls (12). Tile according to claim 1, characterized in that mutually spaced-apart parallel tiles are provided with a bottom closure consisting of a false ceiling made of panels (20) resting on outwards extending teeth (21) from the foot of said walls (12). Tile according to claim 1, characterized in that above said light diffusion sites (13) indoor light sources are provided which generate the same effect as it would be generated by day light.

Inventors: DAL LAGO ALBERTO, DAL LAGO, ALBERTO
Applicants: DLC SRL, DLC S.R.L.
Application year: 1995
Main classification: E04D3
IPC codes: E04C3, E04D3, E04B7, E04B9