CZ139494A3 - Supporting structure for light panels made of easy-to-dismount elements - Google Patents

Abstract

Knockdown-elements framework for supporting and stretching light signs made from transparent or semitransparent flexible materials, constituted by a plurality of vertical bars (1) fixed to a wall, a cantilever roof or the like, by upper (5) and lower (5a) anchoring flanges inclined at 45 DEG , provided at their ends with an upper stretching section bar (14) and a lower stretching section bar (14a), by a plurality of upper (21), intermediate (22) and lower (20) reflective plates, the latter being designed to horizontally slide within a continuous grooved seat (18a), placed on said lower anchoring flanges and vertically on a folded strip (23) provided at the base of the intermediate reflective plates, the lower stretching section bar (14a) being shiftable, integrally with the lower anchoring flanges (5a), upwards and/or downwards, in order to allow a perfect stretching of the flexible sheet (24) which constitutes the display. <IMAGE>

Description

Technical field:

The present invention relates to a load-bearing structure of easy-to-disassemble elements, consisting at least partially of modular parts and for fastening and tensioning large light panels made of flexible materials that are visible from a long distance and are fixed to fixed objects such as buildings , fuel stations and the like.

BACKGROUND OF THE INVENTION

It is known that structures used to fasten and stretch light panels made of sheets of resilient materials such as plastic sheets and the like are usually located within a rectangular box-shaped body of long length and width and shallow depth. These panels are illuminated by discharge lamps or other types of lighting fixtures located within the rectangular body near the parabolic mirrors. In some cases, the sheet of resilient transparent or translucent material is stretched by hinges or other fasteners to a square-shaped structure having a frame shape pivotally attached to the upper edge of the structure to allow access to the box-shaped body required for assembly, periodic cleaning, for bulb replacement and maintenance, as described, for example, in U.S. Patent No. 4,817,317 and in EP 0268308.

In other embodiments, the fastening and tensioning structure of the elastic film having the inscription is provided with support profile beams that allow the film to be folded over the edge of the structure and stretched therein by winding it onto small metal bars that can be tensioned on the support profile beams within the rectangular shape. In this case a perimeter circuit is not necessary

9372 frame carrying foil.

In practice, both of these types of light panels, i.e., the perimeter frame type and the type in which the flexible liner is tensioned to the open structure, have significant drawbacks, including insufficient rigidity of attachment, insufficient tightness against water and dust penetration between the structure, and a prismatic body and poor accessibility of the interior of said prismatic body.

In the case of frame structures that open upwardly, the notch system with the rotation of the structure requires a through hole, open, a fairly long opening in the side to allow rotation of the structure supporting and tensioning the structure, the connection system being prone to water collection; dust, with the possible penetration of these substances into the rectangular body.

In addition, some profile beams are located in front of the lighting bodies, which inevitably causes unwanted shadows on the light panel.

In order to overcome these drawbacks, Italian patent application No. 22059B89, which is currently pending, proposes a structure supporting and supporting light panels, consisting of a plurality of metal profile beams forming a structure on a square-shaped body which opens like a blind, and whose interior is illuminated. As a result, this structure is characterized by high rigidity and can be easily and quickly attached to the prismatic body. However, its disadvantage is that the structure opening upwards is very heavy.

Another type of light panel construction is that described in patent application EP 0519161 of the same applicator, which is characterized by high rigidity and allows easy and quick access to its individual interior elements for cleaning and maintenance. The entire panel is evenly lit and no shadows are created. This type of construction, however, requires the use of elements of a highly complicated shape, which can only be manufactured industrially with the aid of an extruded light alloy molded material, i.e. a valuable and very expensive material.

9372

SUMMARY OF THE INVENTION

The object of the present invention is to provide a structure supporting and stretching light panels of resilient materials, the construction of which avoids the disadvantages and drawbacks of the prior art, characterized by high rigidity, the elements of which could be assembled quickly while ensuring uniform illumination of the panel without creating unwanted shadows. and which would consist of elements of very simple shape, i.e. easily and economically manufactured either from light alloys or by means of conventional profile beams of ordinary steel.

Another object of the present invention is to provide a support and tensioning structure for light panels that is at least partially modular, thereby requiring a reduced number of profiles that can be assembled easily and quickly, and which always ensures perfect tightness under action atmospheric influences.

These and other features and the corresponding advantages obtained by the present invention are achieved by means of a structure of easily removable elements that supports and stretches the light panels of flexible transparent and translucent materials and which according to the invention consists of;

a plurality of vertical profile beams of a rectangular cross-section, with a height substantially equal to the height of the light panel, parallel to each other and arranged at certain distances in vertical planes which can be secured by a flat mounting surface to a flat support surface provided with a continuous longitudinal slot along a flat surface on the opposite side of said fastening surface,

- a first pair of L-shaped sectional beams, horizontally and parallel to each other, located at opposite ends of said vertical sectional beams in a mirror-symmetrical position, each of which is equal to the length of the longitudinal sides of the structure,

an upper anchoring arm and a lower anchoring arm with quadrangular cross-sections for each said profile / beam, such as walls or the like, of the anchoring

9372 arranged so as to be mirror-symmetrical to each other, the arms being provided at one end with a plate which is to be supported and attached to said flat anchoring surface by connection with a counterpart or the like located within said vertical a profiled beam of similar fasteners, by means of screws or passing through said quad head with a second end face, provided with a slot-fitting and on a flat parallel through hole, said arms being at different heights along said vertical beams by sliding said counterpart through said longitudinal slot,

a foil retaining shoe for each of the anchoring legs having a flat portion provided with a longitudinal U-shaped notch and which can be placed against said through hole in said quadrangular head, the opposite end being curved in a C-shape to form a cradle groove ,

- small locking supports for each of the anchor arms mounted on a horizontal arm rotated 90 ° to the vertical arm, with a hole corresponding to said through hole in said quadrilateral head,

- an inverted L-shaped upper and lower profile beam of a length equal to the length of the longitudinal sides of the whole structure, placed horizontally at the ends of said quadrilateral heads and fixed by their shorter wing by the vertical wing of said small locking supports,

- the upper tension rods and the lower tension rods, which serve to clamp the upper and lower ends of the light panel foil, have a length equal to the length of the longitudinal sides of the structure and are located parallel to each other in space surrounded by said rocker groove; by the longer wing of said inverted L-shaped beams,

- small end plates located on each of the anchor arms provided with an opening and intended to hold said inverted L-shaped profile beams against said quadrilateral heads,

a bolt or tie rod for each of said anchor arms, passing successively through an opening in said small sections;

9372 connected or opposed end plate head, through the opening in said quadrilateral heads, through the opening in the small locking supports, and by a longitudinal U-shaped notch in said foil retaining feet, the screw being adapted to hold the individual components of the system together said anchoring arm, said foil retaining foot, said tension bar positioned in a fold of the light panel forming film, said small locking support, said inverted L-shaped beam, and said small end plate in such a way that the light panel forming film is captured and stretched along the edges formed by the end of the longer arm of said inverted L-shaped beam,

- a rectangular U-shaped profile forming a continuous trough in which the reflective plates can be freely accommodated and which is provided at its lower part with a continuous fastening projection lying in the plane of one side of the profile with a length equal to the length of the longitudinal side said lower anchoring arm and secured by clamping said fastening projection between said small end plates and the surface of said anchoring arms,

a plurality of upper reflective plates mounted in an inclined position, resting between said inverted L-shaped upper profile beams and said vertical profile beams arranged side by side so. That they create a continuous reflective surface inclined downwards,

a plurality of central reflective plates mounted vertically on said vertical profile beams arranged side by side so as to form a continuous vertical reflective surface, said central reflective plates having a fold at their bottom which can serve as a support and guide element,

a plurality of lower reflective plates mounted in an inclined position adjacent to each other so as to form a continuous reflective surface tilted upwardly, the lower edge of the lower reflective plates being located in said quadrangular profile lying on said fold of the midline of said U-shaped trough and their upper an edge of the plates, so that the bottom plates of said plate can be moved horizontally to the extent that they overlap one another and also can be vertically shifted on said fold.

D

937 2 as a result of which they are easily removable by lifting and sliding upwards,

- a pair of cover elements placed above and below the frame bearing the image or inscription, which consist of interconnecting strips of sheet metal and are fixedly fastened by means of notched joints, screws and the like to said first pair of L-shaped cross-section beams ends of said vertical profile beams, with fastening means being notch joints, screws and the like, for firmly fixing said profile beams to the supporting walls, said cover members to said foil retaining feet, etc.

Said upper and lower anchoring legs are mirror-symmetrically arranged and inclined by 45 ° relative to said vertical profile beams. As already mentioned, they are fastened at a desired distance from the upper and lower ends of the vertical profile beams, which is made possible by shifting by means of a base plate in contact with the internal counterparts positioned along the anchoring flat surface of the vertical profile beam. bars that connect the backing plate to the internal counterpart of said slot. Once the desired position has been reached, the arm is fixed by tightening the connecting screws. In this way, the film of the light panel is perfectly tensioned. The film is in fact attached by its upper and lower edges to the upper and lower tension rods by wrapping it once or twice around the rods, or by inserting the tension rod into a tunnel formed by folding and fixing the longitudinal edge of the film, or other suitable ways. The tension bars are further fixed by pressing against the quadrangular heads of the anchor arms. As a result, by moving the upper anchoring legs upwards and the lower anchoring legs downwards, the foil can be stretched to the desired degree of tension and the tension can be adjusted thereby avoiding the formation of waves, creases and the like. For example, the fastening of the foil can be done by first fastening the upper anchoring legs in the desired position and the upper tensioning rod to which the longitudinal upper edge of the foil is attached is pressed against the free ends or the quadrilateral head of said legs.

9372 will be further marginalized.

Then a lower tensioning rod is attached to the free end or to the quadrangular head of the lower anchoring legs, but to which the legs are fixed to the profile beams but the lower longitudinal edge of the claw is not fixed to the vertical transverse beams somewhat higher, for example, by 30 cm than their final position. As a result, the film is loose, fastening the tension bar is very easy and there is no risk of damaging the film. After the lower tension rod has been attached to the lower anchoring legs, the tension rod connected to the anchoring legs is pushed downwardly so that said legs are moved downward until their desired position and degree of foil tension is reached. If, on the other hand, the film needs to be released, for example because it is to be replaced, the screws that connect the lower arms to the vertical profile beams are loosened and the arms together with the lower tension bar are moved upwards.

During the movements of the structure consisting of the lower anchor arms and the tensioning rods up and down, the lower movable reflective plates, extending beyond their upper edge to the fold of the central plates, also move up and down, the latter simply lying on the fold as previously mentioned ¹ -. In addition, the lower edges of the lower reflective plates are disposed in a U-shaped groove and can thus be displaced horizontally until they overlap each other, allowing access to the interior of the structure along the entire length and at the desired location. Alternatively, the plates can be removed completely by sliding them upwards. In this way, the necessary cleaning and replacement operations can be carried out quickly and easily on the reflective plates and on the illuminating bodies, the illuminating bodies being usually arranged according to the central vertical reflective plates or the upper reflective plates or elsewhere inside the structure.

In order to allow access to the interior of the structure and to perform the necessary operations on the arms or other elements of which the structure is composed, it is first necessary to remove the upper and lower cover elements corresponding to the respective case. As noted, these are small elements, fastened to the notch, by screws, or otherwise.

9372

All of the easily removable elements that make up the structure of the invention are simple in shape and can therefore be made of either light alloys such as aluminum alloys, in most cases particularly extruded elements, if the structure is particularly light. or may be made of conventional galvanized steel, which may be painted or the like.

Reflective plates are rectangular or square sheets painted with reflective paints or made of bright anodized aluminum alloy. The tension rods may have a circular or polygonal cross-section and their outer surface may be either smooth or provided with longitudinal grooves or depressions, thereby improving the adhesion of the film to said tension rod.

Other features and advantages of the invention will be apparent from the following example, which describes a preferred embodiment of the invention with reference to the accompanying drawings, and the purpose of which is purely informative and not restrictive.

An example of an embodiment of the invention

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a cross-sectional view of the structure for the flexible film light panels of the present invention; FIG. 2 is a cross-sectional view of the structure shown in FIG. 1 during folding and unfolding; Fig. 3 is a perspective view of a structure according to the present invention with several vertical sections; Fig. 4 is a front view and a side view of the anchor arm; Fig. 5 shows a small end plate, Fig. 6 shows a small locking rest, Fig. 7 is a perspective view of the profile of a vertical profile beam, Fig. 8 shows a top view and a cross-section of the foil holding foot; letter forming a groove in which they can be movably

9372 depicts a bottom movable reflective plate, FIG. 10 shows an enlarged detail of a partial cross-section of the end of the anchoring arm and a partial side view of the end of the anchoring arm on which the tension bar is attached.

Referring to the figures, there is shown a structure supporting and stretching a flexible film light panel according to the present invention, which consists of a plurality of hollow vertical profile beams L1, 1a, 1b, Je, etc., which are substantially quadrangular in cross section with a longitudinal continuous slot 2; are attached to a supporting wall not shown in the figures. At opposite ends of the vertical profile beams, inverted L-shaped profiles 2a and 3a are mirrored symmetrically, on which cover elements 4 and 4a are fastened to the notch or bolts, the cover elements being suitably shaped sheets. On each vertical profile beam, the upper anchoring arm 5 is inclined by 45 ° relative to the vertical profile beam and exchanging upwards and the lower anchoring arm also inclined by 45 ° but pointing downwards. These arms are fastened by means of a support plate 6, attached to a counterpart or the like, not shown in the figures, located within the vertical profile beam and by means of special screws or connecting rods not shown in the figures, which pass through the slot 2 and not tightened, they can slide freely towards the top or bottom of the vertical profile beam. This movement coincides with the plate and the counterpart, making it easier to position the arm in the desired position. The arms are at the opposite end provided with a quadrilateral head 7, in which there is a through hole 8 into which a screw or connecting rod 2 is inserted. This screw 9 passes through the small end plate 16 through the hole 17. the foil retaining foil 10, the small blocking rest 11, wherein the foil retaining foil 1u passes through a U-shaped longitudinal slot 12 and the small blocking rest 11 through an opening 13 in its shorter arm. In this connection, the upper tensioning rod 14 or the lower tensioning rod 14a and the upper 15 'or lower 15a securing the inverted L-shaped profile beam are fixed and held in place.

U-shaped beam that forms a continuous groove 13a in which the lower edge of the lower reflective

9372 fluorescent tubes and the like are mounted on plates 20. i © mounted horizontally on the lower anchor arms 5a. This profile beam is fixed by clamping the fastening projection 19 between the small end plate 16 and the arm 5a by means of screws 6.

The top reflective plates 21 are stationary and are fixed in a downward position. Also, the central reflective plates 22 are stationary and are mounted vertically on vertical profile beams.

Lighting bodies, such as incandescent lamps not shown in the figures, of central reflective plates. These central reflective plates 22 are also provided in their lower part with a longitudinal fold 23 on which the upper edges of the lower reflective plates 20 are supported, which, as mentioned, are supported in their lower part and which can slide in the groove 18a. Thus, the lower reflective plates may be horizontally displaced to the extent that they partially overlap, as shown in Fig. 3, and optionally overlap completely, thereby allowing free access to the illuminators and other internal equipment of the structure. Optionally, the plates can be removed after being moved upwardly, the plates 20 can be moved upwards simply by the fold 23. # if the lower arm anchor 5a together with the lower profile beams 14a are moved upward as shown in Fig. 2. assembly and proper tensioning of the film 24 as shown in FIG. 1.

simple In addition, with scrolling

Claims (7)

PATENTOVÉ Claims • Konstrukce /. / <Konstrukce <l-1, Konstrukce Konstrukce Konstrukce Konstrukce Konstrukce Konstrukce Konstrukce Konstrukce Konstrukce Konstrukce Konstrukce Konstrukce Konstrukce Konstrukce Konstrukce Konstrukce Konstrukce Konstrukce Konstrukce Konstrukce Konstrukce Konstrukce Konstrukce Konstrukce Konstrukce Konstrukce Konstrukce Konstrukce Konstrukce Konstrukce Konstrukce Konstrukce Konstrukce Konstrukce - a plurality of vertical profile beams of rectangular cross-section (1), (Ia), (lb), (lc), with a height, of a light panel relative to each other substantially equal to the height parallel and arranged at certain distances possibly to a flat cantilever by means of a flat surface mounting surface, such as an upper surface of a beam, a wall and the like, and provided with a means for vertically moving the connecting element along the anchoring surface, - a first pair of L-shaped sectional beams (3), (3a), arranged horizontally and parallel to one another, located at opposite ends of said vertical sectional beams (i) so that they are in a mirror-symmetrical position, the length of each The beams are equal to the length of the longitudinal sides of the entire structure. - an upper anchoring arm (5) and a lower anchoring arm (5a) with quadrangular cross-sections for each of said profile beams arranged so as to be mirror-symmetrical to each other, said arms being provided at one end with a plate (6) serving to be supported and fixed to said flat anchoring surface by said suitable connecting element, and at the other end with a rectangular head with flat parallel faces (7) provided with a through hole (3), said arms being positioned at different heights along said vertical beams, by sliding said plate and the respective connecting element, - a foil retaining shoe (10) for each of the anchoring legs (5), (5a) having a flat portion provided with a longitudinal U-shaped notch (12) and which can be positioned against said through hole (8), the opposite end is in the form of a cradle groove (11) for each of said small interlocks in the intended quadrilateral head (7) so as to produce: : o * v: : icí 9372 arms mounted on a horizontal arm rotated 90 ° to a vertical arm, with an opening (13) corresponding to a through hole (8) in said quadrangular head (7), - an upper (15) and lower (15a) inverted L-shaped profile beam of a length equal to the length of the structure, positioned horizontally longitudinally the whole at the ends of said quadrilateral heads (7) and fixed by their shorter wing by the vertical wing of said small locking supports (11) , - the upper tension rods (14) and lower tension rods (14a), which serve to clamp the upper and lower ends of the light panel foil (24), have a length equal to the length of the longitudinal sides of the structure and are parallel to each other in a space surrounded by said cradle a groove, a vertical wing of said small locking supports and a longer wing of said inverted L-shaped beams (15), (15a). - small end plates (16) disposed on each of the anchor arms provided with an opening (17) and intended to hold said profile beams in the shape of an inverted L (15), (15a) against said quadrilateral heads (7), - a bolt or tie rod (9) for each of said anchoring arms, passing sequentially through an opening (17) in said small end plates (16), an opening (8) in said quadrilateral heads (7), an opening (13) of the armrests (11) and a longitudinal notch in small U-shaped blocking, wherein the screw (12) of said foil retaining feet (10), (9) is adapted to hold the individual components of the system bonded or pressed together, namely the head (7) a anchoring arm, said foil retaining shoe (10), said light panel forming tension bars. (14), (14a), disposed in the foil fold of said small locking rest (11), said inverted L-shaped beam (15), (15a) and said small end plate (16), in such a way that the foil forming the light panel is captured and stretched along the edge formed by the end of the longer arm of said profile beam in the inverted L shape (15), (15a), - a quadrangular U-shaped profile (18) forming a continuous groove (18a) in which the reflective plates can be freely accommodated and provided with a continuous fastening at its bottom 9372 by a projection (19) lying in the plane of one side of said profile, with a length equal to the length of the longitudinal side of the structure resting on said lower anchoring legs (5a) and secured by clamping a fastening projection (19) between said small end plates (16); the surface of the anchor arms, - a plurality of upper reflective plates (21) mounted in an inclined position, between said upper L-shaped upper beams (15) and said vertical profiled beams (1) arranged side by side so as to form a continuous reflective surface inclined downwards, - a plurality of central reflective plates (22) mounted vertically on said vertical profile beams (1) arranged side by side so as to form a continuous vertical reflective surface, said central reflective plates having a fold (23) at their lower part which can serve as a support and guide element, - a plurality of lower reflective plates (20) mounted in an inclined position and positioned side by side so as to form a continuous, reflective surface tilted upwardly, the lower edge of these lower reflective plates being located in said continuous groove (18a) of said U-shaped square profile (18) ) and their upper edge lies on said fold (23) of the lower edge of the central plates (22), so that the lower plates can be displaced horizontally to the extent that they overlap and can also be vertically displaced on said fold (23), as a result, they are easily removable by lifting and sliding up, - a pair of cover elements (4), (4a), located above and below the light-bearing structure of the light panel, which consist of interconnecting strips of sheet metal and are fixedly fastened by means of notches, screws and the like. to said first pair of L-shaped sectional beams (3), (3a) located at the ends of said vertical sectional beams, with fastening means, such as notches, screws, etc., for firmly fixing said sectional beams to the bearing walls, said covering elements to said foil retaining feet, etc. Light panel construction according to claim 1, characterized in that said means 1 < 9372 according to claim 1, said easily allowing vertical movement of the connecting element consists of a continuous longitudinal slot (2) and that the connecting element consists of a counterpart or the like located within the vertical beam and connected to said plate (6) by screws or connecting rods passing through this slot (2). Light panel construction according to claim 1, characterized in that said lower (5) and upper (5a) anchoring legs are in a mirror-symmetrical position relative to each other and are inclined 45 ° from said vertical beams (1). 4. Light panel construction characterized in that the demountable elements constituting said structure are made of a light alloy such as an aluminum alloy. 5. The light panel structure according to claim 1, wherein said easily demountable elements constituting said structure are made of conventional steel. Light panel construction according to claim 1, characterized in that said reflective panels are made of rectangular or square reflective coated panels or of a bright anodized aluminum alloy. Lighting panel construction according to claim 1, characterized in that said hollow tension rods have a circular or polygonal cross-section, their outer surface being either smooth or provided with longitudinal grooves or depressions, thereby improving the adhesion of the film to said tension rod.