CZ289647B6 - Framework for light signs made of knockdown elements - Google Patents

Abstract

The invented structure made of knockdown elements and serving for securing and stretching light signs made from transparent or translucent flexible materials, includes a plurality of vertical hollow bars (1, 1a, 1b, 1c) fixed to a wall, a cantilever roof or the like, further horizontal bars (3, 3a) arranged at opposite ends of the vertical hollow bars (1, 1a, 1b, 1c), an upper (5) and a lower (5a) anchoring flanges inclined by 45 degrees and located at various heights along the vertical hollow bars (1, 1a, 1b, 1c). A the ends of the upper and a lower anchoring flanges (5, 5a) there are secured an upper stretching tubular bar (14) and a lower stretching tubular bar (14a). The structure is provided with a plurality of upper, intermediate and lower 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 (21, 22, 20) disposed side-by-side to form continuous reflective surfaces all over the width of the framework, whereby the lower reflective plates (20) are slidable in horizontal direction within a continuous grooved seat (18a), placed on said lower anchoring flanges (5a) and vertically on a folded strip (23) provided at the base of the intermediate reflective plates (22).

Description

Technical field

The present invention relates to a frame structure of easily removable elements, consisting at least partially of modular parts and for fastening and tensioning large light panels made of flexible materials which are visible from a long distance and are fixed to fixed objects such as buildings, pumping stations fuel 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 vinyl sheets and the like, are usually placed 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 illuminators located within the prismatic body near the bright reflective surfaces of the parabolic mirrors. In some cases, the sheet of resilient transparent or translucent material is stretched onto a prismatic structure having the shape of a frame pivotally attached to the upper edge of the structure by pivoting hinges or other hinge elements to allow access into the box-shaped body for assembly, periodic cleaning , lamp replacement and maintenance, as described, for example, in U.S. Pat. Nos. 4,817,317 and EP 0 268 308.

In other embodiments, the fastening and tensioning structure of the display-bearing flexible film is provided with supporting profile beams that allow the film to be folded over the edge of the structure and tensioned within the structure by winding on small metal bars that can be tensioned on the supporting profile beams inside the block body.

In this case, a perimeter frame carrying the foil is not required.

In practice, both of these types of light panels, i.e., the perimeter frame type and the type in which the flexible film is stretched flush with the opening structure, have significant drawbacks, including insufficient rigidity of the connection of the load-bearing and tension beams, insufficient leak tightness. water and dust between the structure, tension beams and prismatic body and poor accessibility of the interior of said prismatic body.

In the case of frame structures that open upwards, the notch hinge system with the rotation of the structure requires a lateral, open, fairly long opening to allow rotation of the structure supporting the supporting and tensioning elements of the film. This type of suspension system includes water and dust trapping elements, with the possible penetration of these substances into the prismatic body.

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

In order to overcome these drawbacks, Italian patent application No. 22059B89, which is currently in progress, proposes a load-bearing and tensioning structure for 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 construction is characterized by high rigidity and can be easily and quickly suspended from the prismatic body. However, its disadvantage is that the upwardly opening foil-carrying structure is quite heavy.

Another type of construction for light panels is that described in patent application EP0 519 161 of the same applicant, 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 shaped material, i.e. a valuable and very expensive material.

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 lychle, 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 light panels of flexible transparent and translucent materials and which according to the invention comprises:

vertical hollow beams, with a height substantially equal to the height of the light panel, parallel to one another and arranged at specified distances in vertical planes, one of the beam surfaces being a flat fastening surface for fastening the frame structure to a flat bearing surface, e.g. , a wall or the like, and a second, opposing, flat anchoring surface is provided with a means for vertically displacing the fastening means along the anchoring surface, a pair of horizontal beams of L cross section horizontally and parallel to each other at opposite ends of said vertical hollow beams a mirror-symmetrical position, the length of each of these horizontal beams being equal to the length of the longitudinal sides of the entire frame structure, the upper anchor arm and the lower anchor arm with quadrangular cross-sections attached to each vertical beam and save provided that the anchoring legs are opposed to each other in a mirror-symmetrical position and are inclined to a vertical beam, said legs having a plate at one end supported and fixed to a flat anchoring surface by means of a suitable connecting element, and a square head at the other with flat parallel faces, provided with a through hole, the anchor arms being positioned at different heights along the vertical hollow beams, by sliding the plate and the respective connecting element, a foil holding foot for each of the anchor arms having a flat end provided with a longitudinal U-shape; for placing against a through hole in a quadrilateral head, the opposite end of the retaining foot being C-shaped to form a cradle groove, a small locking support, for each of said anchor arms, with a rectangular L-shaped cross section and provided in its first leg with an aperture corresponding to a through hole (8) in said quadrilateral head, an upper profile beam and an inverted L-shaped profile beam of a length equal to the length of the longitudinal sides of the frame structure positioned horizontally at the ends of said quadrilateral heads

-2GB 289647 B6

I and held in place by their shorter wing by the second wing of the small locking supports, the upper tension rod and the lower tension rod which clamp and are inserted into the corresponding upper and lower edges of the film forming the display panel of the light panel, the tension rods having a length equal to with a frame length and parallel to each other in a space surrounded by said cradle groove a second wing of the small locking supports and a longer wing of the inverted L-shaped profile beams, a small end plate located on each of the anchoring arms provided with an aperture of inverted L-shaped beams to quadrilateral heads, a bolt or tie rod for each of the anchor arms, passing sequentially through a small end plate aperture, a quadrilateral head aperture, a small locking arm hole, and a longitudinal U-shaped notch in the retaining foot, the screw being adapted to hold the retaining foot, the tensioning tubular bar with display foil, a small locking support, an inverted L-shaped profile beam and a small L-shaped profile beam and / or to the anchor head an end plate, in such a way that the display film is captured and stretched along the edge formed by the end of the longer leg of said inverted L-shaped profile beam, a U-shaped rectangular profile forming a continuous groove seat for receiving the reflective plates. in the plane of one side of this profile, which is of a length equal to the length of the longitudinal sides of the frame structure and rests on the lower anchoring legs and is fixed by clamping a fastening projection between said small end plates and the bottom surface anchoring legs, upper reflective plates mounted at an inclined position, between inverted L-shaped upper profile beams and vertical profile beams arranged side-by-side to form a continuous reflective surface inclined downwards, central reflective plates mounted vertically on vertical profile beams arranged side by side so as to form a continuous reflective surface over the width of the frame structure, the central reflective plates having at their lower part a fold forming a support and guide seat, movable reflective lower plates inclined and positioned side by side to form a continuous a reflective surface tilted upwardly, the lower edge of these lower reflective plates being inserted into a continuous groove seat of said U-shaped rectangular profile (18) and their upper edge lying on a fold of the lower edge of the central reflective plates, so that these reflective lower plates are able to move horizontally until they overlap each other and move vertically on the fold and are easily removable by simply lifting and sliding upwards, a pair of cover members positioned above and below the light-bearing structure, each formed by strips a metal sheet joined together in a plane and immovably fixed in the grooves by means of screws or the like located at the ends of vertical hollow beams to horizontal beams of L cross-section, and fastening means consisting of grooved joints, screws and the like supporting walls, cover elements for foil retaining feet, etc.

Said upper and lower anchoring legs are mirror-symmetrically arranged and inclined by 45 ° relative to said vertical hollow beams. As already mentioned, they are fastened in demand

-3EN 289647 B6 distance from the upper and lower ends of the vertical hollow beams, which is made possible by shifting by means of a base plate in contact with the internal counterparts located along the anchoring flat surface of the vertical hollow beam to move the bolts or tie rods connecting plate with internal counterpart used said slits. 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 rods 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 film can be stretched to the desired degree of tension and the tension can be adjusted, thereby preventing the formation of waves, creases and the like. For example, the fastening of the foil can be done by first attaching the upper anchoring legs in the desired position and the upper tensioning rods to which the longitudinal upper edge of the foil is attached are pressed against the free ends or the quadrangular head of said legs. . Then, a lower tension rod is attached to the free end or quadrangular head of the lower anchoring legs to which the lower longitudinal edge of the foil is fixed, but these legs are not yet attached to the vertical hollow beams but temporarily positioned on these vertical hollow beams in a position that is 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 damage to 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 stretch of the film 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 hollow 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 anchoring legs and the tensioning rods up and down, the lower movable reflective plates, extending beyond their upper edge onto the fold of the central plates, also move up and down, the latter simply lying on the fold as previously stated. 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, thereby 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 the illumination bodies, which illumination bodies are usually positioned 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 mentioned, these are small elements, fastened to the notch, by screws, or otherwise.

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 to be particularly lightweight, or may be made of ordinary galvanized steel, which may be painted or the like.

Reflective plates are rectangular or square sheets painted with reflective paints or made of glossy 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.

-4GB 289647 B6

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.

Overview of the drawings

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a cross-sectional view of the frame structure for the flexible film light panels of the present invention; FIG. 2 is a cross-sectional view of the frame structure shown in FIG. 1 during folding and unfolding; with the lower anchor arms temporarily positioned at a higher position relative to the final position shown in Fig. 1, Fig. 3 is a perspective view of a frame structure according to the present invention with several vertical sections; Fig. 4 is an elevation and side view of the anchoring arm; Fig. 5 shows a small end plate, Fig. 6 shows a small locking rest, Fig. 7 is a perspective view of a vertical hollow beam profile, Fig. 8 shows a plan view and a cross-section of a retaining foot, Fig. 9 is a perspective view of a quadrangular U-shaped profile. forming a groove seat for movably accommodating the lower movable reflective plates, FIG. 10 shows an enlarged detail of a partial section through the end of the anchoring arm and a partial side view of the end of the anchoring arm on which the tensioning rod is attached.

DETAILED DESCRIPTION OF THE INVENTION

Shown in the figures is a structure supporting and stretching a light film with a flexible film according to the invention, which consists of a plurality of vertical hollow beams 1, 1a, 1b. 1c, etc., which are of substantially rectangular cross-section with a longitudinal continuous slot 2 and are fixed to a supporting wall not shown in the figures. At the opposite ends of the vertical hollow beams, inverted L-shaped horizontal beams 3 and 3a are arranged mirror-symmetrically on which the cover elements 4 and 4a are fastened to the notch or bolts, the cover elements being suitably shaped sheets. On each vertical hollow beam, the upper anchoring arm 5 is inclined by 45 ° relative to the vertical hollow beam and facing upwards and the lower anchoring arm is also inclined by 45 ° but facing downwards. These arms are fastened by means of a support plate attached to a counterpart or the like (not shown in the figures) located inside the vertical hollow beam and by means of special screws or connecting rods not shown in the figures and which extend through the longitudinal slot 2 and tightened, they can slide freely towards the top or bottom of the vertical hollow beam. This movement coincides with the plate and 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 it is

-5GB 289647 B6

Also, a through hole 8 into which a screw 9 or a connecting rod is inserted. This screw 9 extends through the small end plate 16, through the opening 17, of the retaining foot 10. through the small locking arm 11, passing through the U-shaped longitudinal notch 12 at the holding foot 10 and through the opening 13 in its shorter arm at the small locking arm 11. The upper tensioning tube 14 or the lower tensioning tube 14a and the upper profile beam 15 or the lower profile beam 15a in the inverted L shape are fastened and maintained in the correct position 5.

The beam with a U-shaped profile which forms a groove seat 18a in which the lower edge of the lower reflective plates 20 is received is mounted horizontally on the lower anchors 10a and 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 9.

The upper 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 the vertical hollow 15 beams L

Lighting bodies, such as incandescent lamps, fluorescent lamps, and the like, not shown in the figures, are mounted on central reflective plates 22. These central reflective plates 22 are also provided with a longitudinal fold 23 at their lower part on which the upper edges of the lower 20 reflective plates rest. plates 20 which, as mentioned, are supported in their lower part and which can slide in the groove seat 18a. Thus, the reflective reflective panels 20 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 interior equipment of the structure. Optionally, the plates can be removed simply by moving them upwards. In addition, the lower reflective plates 20 may be moved upwardly by simply sliding along the fold 23 if the lower anchoring legs 5a together with the lower tensioning rods 14a are moved upward as shown in Fig. 2. as shown in FIG. 1.

Claims (6)

A frame structure for easily removable light panels which supports and tensiones light panels of resilient transparent and translucent resilient materials, characterized in that it comprises vertical hollow beams (1, 1a, 1b, 1c), with a height that is substantially equal to the height of the light panel, parallel to each other and spaced at specified distances in 40 vertical planes, one of the beam surfaces being a flat mounting surface for attaching the frame structure to a flat bearing surface, eg a shed roof or wall; the anchoring surface is provided with a means for vertically moving the fastening means along the anchoring surface, a pair of horizontal beams (3, 3a) having a cross-section L horizontally and parallel to each other at opposite ends of said vertical hollow 45 beams (1, 1a, 1b, 1c) are located in mirror-symmetrical position, the length of each of these horizontal beams (3, 3a) being equal to the length of the longitudinal sides of the entire frame structure, the upper anchoring arm (5) and the lower anchoring arm (5a) with quadrangular cross-sections attached to each vertical hollow beam (1, 1a) , 1b, 1c) and arranged such that the anchoring legs (5, 5a) are opposed to each other in a mirror-symmetrical position and are inclined to the respective vertical hollow beam (1, 1a, 1b, 1c), 5a) are provided at one end with a support plate (6) supported and fixed on a flat anchoring surface by means of a suitable connecting element, and at the other end are provided with a square head (7) with flat parallel faces provided with a through hole (8); arms (5, -6GB 289647 B6 5a) are positioned at different heights along the vertical hollow beams (1, 1a, 1b, 1c), by sliding the support plate (6) and the respective connecting element, a foil holding foot (10) for each of the anchoring legs (5, 5a), having a flat end provided with a U-shaped longitudinal notch (12) for positioning against the through hole (8) in the quadrilateral head (7), the opposite end of the retaining shoe (10) being curved in C to form a cradle groove, small an arm (11), for each of said anchor arms (5, 5a), having a rectangular L-shaped cross-section and provided in its first arm with an opening (13) corresponding to a through hole (8) in said quadrilateral head (7); 15) and an inverted L-shaped lower profile beam (15a) of a length equal to the length of the longitudinal sides of the frame structure, positioned horizontally at the ends of said quadrilateral heads (7) and holding in place by their shorter wing by the second wing of the small locking supports (11), the upper tension tube (14) and the lower tension tube (14a) which clamp and are inserted into the corresponding upper and lower edges of the film (24) forming the display a light panel, wherein the tensioning tubular rods (14, 14a) have a length equal to the length of the frame structure and are in a parallel position in a space surrounded by said rocker groove by a second wing of the small locking supports (11) and a longer wing an inverted L, a small end plate (16) disposed on each of the anchor arms (5, 5a) provided with an opening (17) and intended to hold the inverted L-shaped profile beams (15, 15a) against the quadrilateral heads (7); (9) or a connecting rod for each of the anchor arms (5, 5a), passing successively through the opening (17) in the small an end plate (16), a through hole (8) in the quadrilateral head (7), a hole (13) in the small locking arm (11), and a U-shaped longitudinal notch (12) in the retaining foot (10), ) is adapted to hold to each other and / or to the quadrilateral head (7) of the respective anchoring arm (5, 5a) a retaining shoe (10), a corresponding tension tube (14, 14a) with a display foil (24), a small locking rest (11), an inverted L-shaped profile beam (15, 15a), and a small end plate (16), in such a way that the display film (24) is captured and stretched along the edge formed by the end 15, 15a), inverted L-shaped, U-shaped quadrangular profile (18) forming a continuous groove seat (18a) for receiving a reflective plate (20, 21) provided with a continuous fastening projection (19) at the bottom, lying 3, which is of a length equal to the length of the longitudinal sides of the frame and rests on the lower anchoring legs (5a) and is fastened by clamping a fastening projection (19) between said small end plates (16) and the surface lower anchoring legs (5a), upper reflective plates (21) mounted in an inclined position, between the upper L-shaped profile beams (15) and the vertical hollow beams (1, 1a, 1b, 1c) arranged side by side so that forming a continuous reflective surface inclined downwards, central reflective plates (22) mounted vertically on vertical hollow beams (1, 1a, 1b, 1c) arranged side by side so as to form a continuous reflective surface over the width of the frame structure, the plates (22) are provided in their lower part with a fold (23) forming a support and a guide seat, movable lower reflective plates (20), inclined and side by side so as to form a continuous reflective surface tilted upwardly, the lower edge of these lower reflective plates (20) being inserted into the continuous groove seat (18a) of said U-shaped rectangular profile (18) and their upper edge lying on the fold 23) the lower edge of the central reflective plates (22), such that the lower reflective plates (20) are able to slide horizontally until they overlap and slide vertically on the fold (23) and are easily removable by simply lifting and sliding upwards, a pair of cover elements (4, 4a) positioned above and below the light panel supporting structure, each formed by strips of metal sheet joined together in a plane and fixedly fixed in grooves by screws or the like located at the ends of the vertical hollow beams (1, 1a, 1b, lc) to horizontal beams (3, 3a) with a cross-section L and fastening cheers means constituted e.g. groove joints, screws, which are used for the stable attachment of said section bars to supporting walls, the cover element (4,4a) for holding the beads (10) retaining sheet (24). A frame structure for light panels according to claim 1, characterized in that the means allowing vertical movement of the connecting element consist of a continuous longitudinal slot 289647 B6 (2) and the connecting element consists of a counter piece located inside the respective vertical hollow beam (1, 1a, 1b, 1c) and connected to the support plate (6) by means of screws or connecting rods extending through the longitudinal slot (2). 5 A frame structure for light panels according to claim 1, characterized in that the upper anchor arm (5) and the lower anchor arm (5a) are in a mirror-symmetrical position relative to each other and are inclined 45 ° to the vertical hollow beams (1, 1a). 1b, 1c). Light panel construction according to claim 1, characterized in that it is easy The removable elements constituting the frame structure are made of a light alloy, such as an aluminum alloy. Frame structure for light panels according to claim 1, characterized in that the easily demountable elements constituting the frame structure are made of conventional steel. Light panel frame structure according to claim 1, characterized in that the reflective plates (20, 21, 22) are made of rectangular or square plates coated with a reflective coating or of a bright anodized aluminum alloy. A frame structure for light panels according to claim 1, characterized in that the tensioning tubular rods (14, 14a) have a circular or polygonal cross-section with an outer surface smooth or provided with longitudinal grooves or projections to improve the adhesion and tension of the film (24). tensioning rods (14, 14a).