MXPA00012643A - Panels of controllable radiation transmissivity - Google Patents

Abstract

The invention provides a panel (2) of controllable radiation transmissivity, including a plurality of tubular cells (4), in at least some of which cells is rotatably mounted at least one radiation-blocking member (6), at least one portion of at least one surface of which is substantially opaque, and means (8) for rotating the radiation-blocking member (6) inside the tubular cells (4), wherein the radiation-blocking member (6), when rotated, is adapted, in at least one angular position, to substantially block the passage of radiation through the panel (2), and in a plurality of other, selectable, angular positions, to provide a plurality of differing radiation transmissivities.

Description

CONTROLLED RADIATION TRANSMISIVITY PANELS TECHNICAL FIELD The present invention relates to a controllable radiation transmissive panel for the construction of walls, ceilings, awnings, skylights, windows and the like.

BACKGROUND OF THE TECHNIQUE 10 Panels are known for purposes such as the above or the like, however, they are transparent, translucent or opaque, but their transmissivity is predetermined and can not be altered or modified. This alterability could be even more useful, especially in hot climates in where less exposure to the sun during the warmer hours would reduce the costs of air conditioning, or in cold climates where greater sun exposure would reduce heating costs. The patent of E.U.A. 5,600,920 discloses a motorized blade louver structure that includes operable slats within a camera formed by a double glass window unit, to carry out a pivoting of the slats. ------- É-Mll-il BRIEF DESCRIPTION OF THE INVENTION It is for this reason, one of the objects of the present invention to provide a panel for the construction of ceilings, walls, awnings, skylights, windows and the like, whose radiation transmissivity can be adjusted at will to any state, from the almost total transparency or translucency to the almost total opacity. According to the invention, the above purpose is achieved by providing a controllable radiation transmissive panel, comprising a variety of radiation blocking parts mounted in a rotatable manner, each of these pieces having at least one part which is substantially opaque, and the means for rotating said radiation blocking parts, which upon rotation, are adapted in at least one angular position to substantially block the passage of radiation through the panel, and in a variety of other angular positions to be chosen , to provide a variety d? different radiation transmissivities, characterized by a variety of substantially transparent tubular cells, at least one of the radiation blocking pieces being mounted in at least some of the tubular cells, and for the purpose of rotating the radiation blocking parts within the tubular cells.

BRIEF DESCRIPTION OF THE DRAWINGS The invention will now be described in connection with certain preferred embodiments with reference to the following illustrative figures so that they can be fully understood. With specific reference now to the figures in detail, it is emphasized that those shown are only by way of example and for illustrative purposes of the preferred embodiments of the present invention, and that they are presented for the purpose of providing what is he believes that it is the most useful and understandable description of the principles and conceptual aspects of the invention. In this regard, no attempt has been made to show details of the structure of the invention in more detail than is necessary for a fundamental understanding of the invention, the description taken in conjunction with the drawings will make it apparent to those skilled in the art how the different forms of the invention in practice. In the shafts: Figure 1 is a perspective view of a panel completely assembled in accordance with the invention; Figure 2 illustrates a first adjustment for mounting the panel on the straps of the structure of a roof; Figure 3 shows a different type of fixing rail; Figure 4 shows a second adjustment for mounting the panel on the straps of the structure of a roof; FIG. 5 shows a first profile of the cells of the panel member according to the invention; Figures 6 to 8 represent other possible profiles of the cells; Figure 9 is a perspective view of a preferred embodiment of the radiation blocking part according to the invention; Figure 10 is a final view of the radiation blocking part of Figure 9, located within a cell; Figure 11 is a perspective view of another embodiment of the radiation blocking piece; Figure 12 is a perspective view of yet another embodiment of the radiation blocking piece; Figure 13 is a variant of the radiation blocking part of Figure 12; Fig. 14 is a final view of yet another embodiment of the radiation blocking piece 15; Figure 15 is a schematic view of a panel according to the invention; Figure 16 is a perspective view, on an enlarged scale, of a part of the assembled operating mechanism; Figures 17 and 18 are perspective views illustrating a different means for activating the radiation blocking parts; Figures 19a to 19c. schematically show different limit positions of the radiation blocking part; --tt-ÜÉ-li -------- á-ü-t--.

Figure 20 is an elevation view of the panel of a further embodiment, including a variant of radiation blocking part of Figure 9; Figure 21 is a schematic view of the embodiment of Figure 20; Figure 22 is a perspective view of part of the panel, showing the engine, the variety of gearboxes and the drive shaft; Figure 23 is a view of the gearbox in cross section along the plane XXIII-XXIII in Figure 24; Figure 24 is a top view of the gearbox; Figure 25 is a view of the gearbox in cross section along the plane XXV-XXV in Figure 24; Figure 26 is a perspective view of the gear box in cross section of Figure 23; Figure 27 is a perspective view of the coupling seen from the side of the conducting fingers, and Figure 28 shows a side view showing the mechanical coupling fastened to the panel.

DETAILED DESCRIPTION OF THE INVENTION Referring now to the drawings, it can be seen in figure 1, representing a perspective view of a complete panel according to the invention, a body of the panel 2 with a substantially flat upper surface, and comprising a variety of cells 4. Conveniently, cells 4 are parts of an integral, transparent extrusion of plastic materials such as polycarbonate, PMMA or PVC, although it would be possible to produce a panel by extruding single cells and joining them side by side by one of the known methods (cementation , ultrasonic welding, etc.) to form a complete panel body 2. The sun-facing upper surface of the panel body 2 is conveniently provided with a treatment known per se to make it UV-proof. The optional cross sections of cells 4 will be discussed later. The term "light", as used in the description, is intended to encompass not only the spectral range of visible light, but also the ranges of electromagnetic radiation below and / or above the spectral range. Within the cells 4 there are light-blocking parts mounted rotatably 6, the purpose of which is to substantially block the passage of light in an angular position, while offering a variety of different light transmissivities in a variety of other angular positions. Further possible configurations of the light blocking parts will be described below. The rotation of the pieces 6 is carried out by means of a mechanism that will be explained later. An electric motor 8, suitably a 12 V gear motor, is also seen, mounted by means of two brackets 10. -,. -> ..i - * .. in a frame formed by a lower member 12, and an upper member 12 'and a cover 14, which in figure 1 is partially cut away to reveal part of the mechanism that will be described later. The dorsal end of the body of the panel 2 is closed by a metal or plastic molding 15. The first and last cells of the body of the panel 2 do not necessarily accommodate the light blocking parts 6 because, as will be shown (figure 4), in some The first and last cells are used to mount the panel on the straps of the structure of a roof. Since, again due to the extrusion process, the width of the panel bodies 2 is limited, while none of these limitations obtains the appropriate length, the roofs are covered by cutting panel bodies to the required length and adjusting them in juxtaposition to the straps of the roof structure. For this purpose, the panels have to be joined side by side in a way that provides mechanical strength and is also waterproof. Two of the different solutions to this problem are clearly shown in Figures 2 to 4. In a first embodiment (Figure 2), the body of the panel 2 is provided with wings 16 extending along the two longitudinal edges.whose interior surfaces are jagged. A hollow extruded aluminum rail is also provided with wings between which the empty cells 4 'of the two adjacent panel members 2 are adjusted, including their respective wings 16. After the rail 18 with the panel parts 2 adjacent in position as shown, they have been attached to the straps P of the roof structure by means of screws 20, a U-shaped plastic fastening rail 22 having toothed fins 24 is pushed on the wings 16 of the pieces of Adjacent panel 2, offering a strong clamping force. To achieve even more rigidity, instead of a plastic rail 22 it is possible to use a suitably formed aluminum rail 26 (FIG. 3). Another solution is illustrated in figure 4. Here, an aluminum extrusion 28 is introduced into an empty cell 4 ', filling its entire longitudinal extension and imparting its mechanical force. Two other profiles are used: a bottom profile 30 similar to a trough that fits the lower round part of the cells 4, and an upper profile 32 of two fins resting on the upper surface of the panel pieces 6 and, with the help of a screw 20, they force the two adjacent panel members 6 (of which only one is shown) against the belt P. The cells 4 can have various cross-sectional shapes, such as the shape of the arms shield of the figure 5, a more elaborate shape that is provided along the round portion of its inner surface with prism-shaped grooves 34 having both an aesthetic and an optical effect. The aesthetic effect is twofold: the longitudinal lines produced are pleasant by themselves, and the grooves also hide the interiors of the cells, in particular, the cracks and marks of use that can be produced on a smooth interior surface by the rotation of the pieces of light blocking 6. Regarding optics, prismatic grooves produce more diffuse light ^^^^ * ¡¡- smooth. A second version of this profile is provided with another layer 36 below the upper surface of the panel body 2, for improved thermal sun exposure. In all the cells 4 the internal height conveniently exceeds the internal width, so that the flexing of the panel does not cause it to tighten. Figure 6 shows a rectangular profile of the cells 4, in which the body of the panel 2 has two flat surfaces. Figure 7 shows a cell 4 with a circular profile. The body of panel 2 of this embodiment also has two planar surfaces. Figure 8 is another profile of coat of arms type, with a wavy upper surface. The light blocking parts 6, as already mentioned, are mounted rotatably in the cells 4 and, their surfaces have a substantially opaque portion, the angular position of this portion within the cell 4 determines the light transmissivity of the cells. cells that, by controlling this position, can thus be controlled between a minimum and a maximum, depending on the sky and / or the position of the sun. A preferred embodiment of light blocking parts 6 is shown in Figure 9. The profile, reinforced by a horizontal and a vertical rod 37, 37 'respectively, is approximately semicircular, subtending an angle of slightly more than 180 °. The upper surface 38 is substantially planar and is rendered opaque by known means such as painting, covering with an opaque film, or providing an opaque plastic layer applied by coextrusion. The upper surface 38 is delimited laterally by two edges 40 projecting beyond the semi-circular underside surface 42. Every 500 to 1000 mm, depending on the total length of the cells 4, the edges 40 are provided with two holes or holes 44 , one opposite to the other, within which there are plastic rings of springs 46. These rings serve as support elements that carry the pieces 6 inside the cells 4 and which constitute the only contact with the bottom of cell 4 , as can be clearly seen in figure 10. The advantage of this type of assembly of parts 6 is the insensibility of the pieces 6 to the flexure of the panel between the belts, due to snow or wind loads. To a very high degree, said bends will not interfere with the rotation of the pieces 6. The assembly of parts rings 6 in fact ensures trouble-free operation of the panels having a length of twelve meters and more. A variant of the light blocking part of Figure 9 is shown in Figure 11, the difference lies in the fact that the profile portion 45 on the horizontal rod 37 has the shape of a dovetail. Another difference is seen in the ring 47, which is now split in half, the separate portion provided with feet 48 abutting the surface 38. The advantage of the ring 47, as compared to the ring 46, is that while the rings 46 can be applied only at the ends of the piece 6 and have to slide along the last one at a considerable distance (the pieces 6 can be at most 12 meters long), the rings 47 can ? t t < rr n-a-t? opening by elastic deformation and can be rapidly pressurized to their respective recesses 44 without having to slide along the part 6. Another embodiment of the light blocking part 6 is shown in Figure 12, which consists of a central bar 50 and two axes 52. The bar 50 is supported at both ends and the axes 52 rotate inside the cell 4. While for short blocking light pieces as required, for example, in windows or skylights, this mode needs Support only at its end, longer pieces of this type must also be held at one or more points along its longitudinal extension. A variant of the light blocking part of Figure 12 is shown in Figure 13, in which the axes 52 are not solid, but formed from thin strips 54 or uniform bristles. A setting like this could reduce the distortion effect of the panel's flexure. Yet another embodiment of the light blocking piece 6 is represents in FIG. 14. The piece 6 is shaped by a plastic tube 56 of circular cross-section. Near half of the circumference of tube 56 it becomes opaque by painting it, covering it with an opaque film, or by giving it an opaque plastic layer applied by coextrusion. Next, a detailed description will be given of the mechanism that is used with the light blocking parts 6. Figure 15 is a schematic view of the fusion mechanism. The flow of energy is very simple: the motor 8 drives one of a variety of gears 58 by means of a coupling 60A, 60B. Each -A --- da¡ii-Í- £ í-É-tí-i-- one of the gears is mounted on the first piece 62A of a three-member Oldham coupling (a coupling that is extremely tolerant of misalignment) between the input and output axes). All the gears 58 engage in a lower rack 64 and a top rack 64 ', each 5 of which is slidably seated in grooves 66, 66' respectively, provided in upper and lower frame parts 12, 12 'respectively. (Although a rack 64 would serve, a pure torque, that is, a force for rotation without side components, requires two racks). When the gear driven directly by motor 8 rotates, it causes the racks 64, 64 'to slide in opposite directions in their respective grooves 66, 66"thus rotating the rest of the gears 58. Through a second coupling member 62B , the first member 62A rotates to the third member 62C, whose outlet end is adapted to adjust to the cavities of the light blocking part 6 and thus rotate the latter. Referring now also to Figure 16, there is also a bearing wall 68 fixedly mounted between the lower and upper frame parts 12, 12 'and provided with holes 70 that serve as bearings for the axes of the first members. coupling 62A. the third coupling member 62C is held in cells 4 thanks to the first of the rings 46. > i > Htx¿x.yy? .-, & to. . ^ ¡¡Also seen is a divided wall 72, 72 '(Figure 15), which, as can be clearly seen in Figure 16, serves to maintain the integrity of each coupling comprised of the parts 62A, 62B, 62C preventing the member 62C disengages from member 62B. The semicircular recesses 74 do not serve as bearings for the clamp 76 of the third coupling member 62; in fact, for the coupling to accommodate unavoidable alignment deviations, the diameter of the recesses 74 must be much larger than the diameter of the clamp 76. These are shown later in Figure 15 and, for convenience, in Figure 16. rings 78 having a slightly sharp gauge and, when pushed to the slightly sharpened center with grooves 80 of the gears 58, fasten the latter to the shaft 82 of the gears 58. Also shown in Figure 16 are grooves 84 for cords of rubber that act as seals when the assembled mechanism is mounted on the body of panel 2 (see figure 1). Similar slots are obviously provided in the upper frame member 12 '. Figure 15 also shows two limit axes 86, 86 'defining the ends of the rack movement and, thus, the rotation of the light blocking parts 6. The limits of this turn will be discussed below. It will be appreciated that the limit shafts 86, 86 'may also be integral components of the gear motor 8. Figures 17 and 18 illustrate another means for rotating the light blocking parts 6, which means that, although it was conceived to be used with the light blocking part shown in figures 12 or 13, it can also be modified to be used with the zipper described above and the gear mechanism. Using the same metal spring ring means that served to mount the gears 58 (FIG. 16) tightly on the shaft of the coupling member 82, the levers 88 (figure 17) are attached to the axes 50 of the vanes 52 in figure 12, each lever 88 provided with a pin 90. A bar 92 (figure 18) with holes of the right size and space slides on all the pins 90 and when one of the levers 88 is coupled to the motor 8, its rotary movement is transmitted to all the levers 88 and thus to all the blades 52. Next, the scope and control of the rotary movement of the parts will be discussed. light blocking 6. Starting, as shown schematically in Figures 19a to 19d from the full opacity position in which the opaque surface 38 of the light blocking part 6 is substantially parallel to the body surface of the panel 2, piece 6 is limited to an angular range of 90 ° rotation both clockwise and counterclockwise. These limits are enforced by means of limit axes 86, 86 'stopped by a rack 64 (FIG. 15). By removing it from the blocking position (FIG. 19a) and turning clockwise, the surface 38 extends to a first quadrant of the celestial hemisphere and is stopped by a limit axis 86 in the position shown in FIG. 19b, in FIG. which is perpendicular to the surface of the panel, that is, for maximum transmissivity when the sun is at its highest point. In order to extend into the second quadrant, the direction of rotation must be reversed, with piece 6 returning and passing through the opaque position (FIG. 19c), after which the second dial is traversed, stopping piece 6 by means of a limit axis 86 '. Another embodiment of the panel according to the invention is illustrated in figures 20 to 28. The body of the panel 2 is substantially identical to that of the previous embodiment, with the cells 4 being of the rectangular type shown in figure 6. The pieces of light lock 6 are of the type shown in Figure 9, but may also be of an alternative design, also shown in Figure 20: completely tubular, with an integral diameter partition 39 produced from an opaque plastic material by coextrusion with the transparent tubular part. The assembly of the panel body 2 in the roof straps is analogous to the procedure explained together with the previous embodiment. Fig. 21 illustrates the energy flow through which the rotary movement of an electric motor is transmitted to the light blocking parts. An electric gear motor 8 is seen which, by means of two gears 94, 96, leads an axis of operation by slot 98 that extends along the width of the entire panel, as shown in figure 22. Located inside of a gearbox 100, of which there is one for each cell 4, and suitable for the shaft 98, an endless screw 102 is provided which engages a screw gear 104, likewise located in the gearbox 100 and suitable for the shaft 106 of the coupling 108. The above constitutes the link between the mechanism described above and the light blocking part 6. It should be noted that the coupling 108 is much simpler than the 3-piece coupling of the Oldham coupling 62A, 62B, 62C of Figures 15, 16 of the previous embodiment. The coupling of Oldham, which, as explained above, is extremely tolerant to the lack of alignment between the input and output shafts, needed to take care of the variations, inevitable in plastic extrusions, of the distances between the cells 4. In the present This problem is solved by mounting the one-piece couplings 108 in gear boxes 100 having the property of "floating" by means of grooves 110 that provide them with a degree of freedom in their movement along the rail 112, allowing thus to each gear box 100, and therefore to each coupling 108, find its proper position relative to the respective cell 4. The rail 112 is part of an aluminum profile 114 which accommodates the entire mechanism, including the motor 8 attached to the profile 114 by means of a bracket 115. The panel 2 is held tightly between the profile 114 and another profile which also serves as a cover 116. Figures 23 to 26 depict the gear case 100 and the components associated with it. The worm 102 slidable along the length is observed, but driven in rotation by the shaft 98 by means of a key 118 (figure 23). The worm 102 engages the screw gear 104, which is adapted to the axis 106 of the coupling 108. The shaft 106, as can be seen in figures 23 and 26, is mounted on gauges of the appropriate size and location 120 in the box of gear 100 (figure 21). Strictly speaking, the screw gear 104 should be of elicoidal type, with the helix angle or its teeth corresponding to the main angle of the worm 102. While for maximum efficiency and useful life, this is the most appropriate solution, Considering the fact that the required speeds are very slow and the forces are relatively small, simple gears of spurs can also serve. Since all the transmission components (except the shaft 98) are conveniently designed as plastic molds, the extraction of the mold, from a helical gear, already greatly complicates the mold by requiring an additional mechanism to produce the required helical extraction movement . The shaft 106 terminates in a rim 122 which is released to a depth of about half its thickness by about three quarters of its circumference. In this? released portion projects a ring segment 124 which is an integral part of the gearbox 100 and serves as a stopping point as well as reference for assembly purposes of the panel unit. In figures 23, 24, 25 and especially in the perspective view of figure 27 the conducting fingers 126A, B, C, D which are integral parts of the coupling 108 and are configured to enter the spaces defined by the rods are seen. 37, 37 in Figure 21 and the operating light blocking parts 6 (Figure 21). For When used with the cylindrical variant of the light blocking part 6 shown in FIG. 20, the shape of the conducting fingers 126 must be clearly modified. Figure 28 is a side view showing the inner end 5 of the panel 2, in which are subject profiles 114 and 116 which, between them, accommodate the entire mechanism, including the engine 8. Water resistance is ensured by means of a seal 128 located in a crack in the cover 116 and extending along the entire width of the panel 2. 10 This mode can also have limit rods that define the limit positions, by the body of the rod attached to a stationary part of the mechanism, and the rod being stopped by a part that moves therein. Obviously, the light blocking parts 6 can be stopped at any angular position, also between the limit positions defined by the limit rods, by controlling the member 8. This can be done either manually or automatically. The manual control is carried out by operating a reversing button of spring polarity. An energy supply including a voltage stabilizer and a thermal fuse is also required to protect the motors 8. To obtain satisfactory automatic control, it is better to use a phase motor controlled by a microprocessor that works with a program that includes all the parameters involved in the proper functioning of the panels, such as the limits of rotation in the rfjg ^ M = Ja¡ ^ M-- ------------------- --------------------- --------------------- ** -. j. ... . . . .; and, z ... z ... clockwise and counterclockwise (thus eliminating the need for limit rods), the opening of the light blocking parts 6 as a function of the prevailing light as photodetectors perceive it, the attenuation of artificial lighting depending on the natural light that enters through the panels, the stopping of motors in case of overload, etc. Obviously, the user can always cancel the program or enter the changes that he wants. The program can also be designed to shut down the system on weekends or during vacations. The panel according to the invention will work in all positions: horizontal, vertical, inclined, even slightly arched. While the above-described methods are very preferred, other types of conduction are also possible, for example, chain driving or chronometer measuring belt. Although hereinafter the term "manual" is intended to refer to the manual activation of the gear motor 8, it can be seen that embodiments are provided in which the panel according to the invention, instead of, or in addition to, being operated by means of of the gear motor, can also be operated manually.

Claims (3)

1. NOVELTY OF THE INVENTION CLAIMS 1. - A variety of radiation blocking parts mounted rotatably, each of the pieces having at least one part that is substantially opaque, and means for rotating said radiation blocking members, which upon rotation, are adapted in at least one angular position to substantially block the passage of radiation through the panel, and in a variety of other angular positions to be chosen, to provide a variety of different radiation transmissivities, characterized by a variety of substantially transparent tubular cells, being at least one of the radiation blocking pieces mounted on at least some of the tubular cells, and means for rotating the radiation blocking pieces within the tubular cells.
2. 2. The panel according to claim 1, further characterized in that the variety of tubular cells is part of an integral plastic extrusion.
3. 3. The panel according to claim 1, further characterized in that the tubular cells have a cross section in the form of a coat of arms. 4. - The panel according to claim 1, further characterized in that the tubular cells have a rectangular cross section. 5. The panel according to claim 1, further characterized in that the tubular cells have a circular cross section. 6. The panel according to claim 1, further characterized in that the tubular cells are provided with at least one additional layer below the upper surface of the panel for an improved thermal sun exposure. 7. The panel according to claim 1, further characterized in that the radiation blocking parts are in the form of tubular pieces, each defined by a substantially semi-cylindrical portion and a substantially planar portion. 8. The panel according to claim 7, further characterized in that the flat portion is substantially opaque, while the semi-cylindrical portion is substantially transparent. 9. The panel according to claim 7, further characterized in that the tubular parts are provided with at least one reinforcing rod. 10. The panel according to claim 7, further characterized in that the longitudinal edges of the flat portion are provided with spaced pairs of recesses, the recesses of each pair being located opposite one another. The panel according to claim 1, further characterized in that the radiation blocking parts are in the form of two co-planar vanes attached to each side of a central bar. with claim 7, further characterized in that the radiation blocking parts are provided with support elements 13. The panel according to claim 12, further characterized in that the support elements are in the form of a variety of rings. an outer diameter larger than the width of the tubular pieces, but smaller than the width of the tubular cells, whose rings are distributed substantially and uniformly along the pieces, each ring being retained in its location when inserted therein of springs in a pair of the aforementioned recesses, further characterized in that the rings conduct the parts within the tubular cells and constitute the only contact with the tubular cells. 14. The panel according to claim 13, further characterized in that the rings slide, facilitating their assembly in the radiation blocking parts. 15. The panel according to claim 1, further characterized in that the radiation blocking parts are in the form of substantially cylindrical tubes, each having a substantially flat dividing wall positioned substantially in diameter. ÜM ^ Ü ^ b 16. - The panel according to claim 15, further characterized in that the dividing wall is substantially opaque, while the cylindrical tubes are substantially transparent. 17. The panel according to claim 1, further characterized in that the means for rotating the radiation blocking parts is at least one electric gear motor. 18. The panel according to claim 17, further characterized in that the motor is coupled to a gear wheel which, when rotated by means of the motor, is adapted to operate one of the radiation blocking parts. 19. The panel according to claim 18, further characterized in that each radiation blocking part of the panel has a driving connection with a gear wheel, engaging all the gear wheels of all the parts with, at least one sliding rack in a panel frame, further characterized in that the gear wheel coupled to the motor, upon turning, causes the rack to slide, rotating all other gear wheels. 20. The panel according to claim 18, further characterized in that it comprises at least one limit axis operable by means of at least one rack in order to define a limit position thereto. ¿^ ^ ¿Fa -, - 3 21. - The panel according to claim 1, further characterized in that the means for rotating the radiation blocking feet is an electric phase motor. 22. The panel according to claim 21, further characterized in that it comprises a driving shaft driven by the electric phase motor. 23. The panel according to claim 21, further characterized in that the conductor axis extends along the entire width of the panel. The panel according to claim 23, further characterized in that the driving shaft is provided with a key slot extending along its entire length. 25. The panel according to claim 24, further characterized in that the grooved driving shaft passes through, and is in driving connection with, a variety of screw gear endless screws and allows the endless screws a degree of freedom in their transfer. 26. The panel according to claim 25, further characterized in that the screw gears are mounted on the input shaft of a coupling, whose outlet side is configured to enter and conduct at least one radiation blocking piece. . 27. The panel according to claim 26, further characterized in that the screws, the screw gears and • fltiÉiiM --------- l -------------------------------------- - The couplings are mounted in gearboxes mounted floating on a rail of a profile, accommodating the entire mechanism in the panel.