EP1864273B1 - Modular structure display device - Google Patents

Abstract

A display device with horizontal or vertical, alternating or continuous scrolling of at least two juxtaposed posters forming a strip, comprises a substantially rectangular parallelepiped outer geometry with the posters being viewed on a rectangular front frame. The strip is driven in a translational movement parallel to the front frame by at least one power roller. The device further comprises two independent modules, each adapted for rotationally guiding at least one power roller or at least one idle roller. The modules are assembled together by at least one beam and are located on the shorter sides of the rectangle formed by the front frame.

Description

Technical area

The invention relates to a display device for scrolling images juxtaposed and forming a band. Thus such a display device can in particular serve as a support for several advertising campaigns when it is a billboard advertising.

The invention is more particularly a modular structure particularly compact and easily removable into several independent elements, which has multiple advantages, especially for routing from the place of manufacture to the installation site.

Prior art

In general, the display devices are formed by rigid boxes assembled at the factory and then transported to their place of use.

As described in the document EP 0 214 587 , this type of display device assembled in the form of a box is well suited to small posters, including posters whose surface is less than 2 m ² . Indeed, in this case the boxes can be easily transported in a standard vehicle to their place of use.

In addition, and as described in the document DE 201 03 997 U1 there are also known display devices comprising a base arranged on the ground. A cap is then positioned opposite this base and maintained at a determined distance by means of rods. A motorized upper roller is guided in rotation relative to the cap and a lower roller acts as counterweight and is concealed inside the base .. This roller is not guided in rotation relative to the base.

Such a display device is therefore not suitable for large posters and the transport and assembly of the various elements constituting it is not not easy to achieve. Indeed, it is necessary firstly to position the flat base and secondly to place the independent lower roller later.

Moreover, for certain applications and in particular for very large display devices as described by the applicant in the document EP 1 092 216 transporting an assembled device in the form of a box can be very problematic, if not impossible.

Thus, the object of the invention is to facilitate the handling and transport of display devices from their place of production to their place of use, which can be very remote and require transportation by air in particular. To do this, the invention proposes to limit to the minimum the number of independent elements while facilitating their subsequent assembly.

In addition, the poster band is wound on drive rollers of which at least one is motorized. The rolls are necessarily longer than the width of the poster band which leads to very significant weight especially in the case of large format panels. The mechanical bearing structure and the bearings capable of making a pivot connection between the different rollers and the rest of the device must thus be dimensioned accordingly.

Another object of the invention is to use drive rollers which are as short as possible to reduce on the one hand, the weight of the display device but also the entire mechanical structure for supporting them. Indeed, the use of rollers of small dimensions makes it possible on the one hand to facilitate their transport but also to simplify the mechanical structure of the display device.

Presentation of the invention

The invention therefore relates to a display device with horizontal or vertical scrolling, alternating or continuous. Indeed, this type of display device can be used to scroll at least two juxtaposed posters forming a band that can be endless in which case the scroll is of continuous type and the images scroll in a single direction. The band may also be discontinuous. In this case, each end of the strip is secured to a roller, the scroll is then alternating in two opposite directions.

Such a device comprises a substantially rectangular parallelepiped outer geometry and the posters are displayed at a rectangular front frame. The strip is itself driven in a translation movement parallel to the front frame by means of at least one motorized roller.

By substantially parallelepipedic, one also understands prismatic forms whose base can be in particular that of a trapezium. In this case, the face at the front frame may be wider than the rear face of the device. Such an arrangement then makes it possible to achieve an optical effect aimed at making the device less shallow.

The device is characterized in that it comprises two independent modules, each comprising means for guiding in rotation at least one motorized roller or at least one idler roller. The modules are assembled together by at least one beam , and arranged at the smaller dimension of the rectangle formed by the front frame.

In other words, such a device is constituted by at least three elements joined together. The beam makes it possible to maintain the two modules at a predetermined distance according to the largest dimension of the posters to be scrolled. Furthermore, the motorized or idle rollers are arranged in pivot connection with respect to the structure of each module. Each roll is therefore constantly protected within the volume defined by a module.

These characteristics thus give the device a modular structure easily transportable and assembled on site. In addition, the modules are small, which facilitates their handling, storage, and reduces the size of the roller associated with the motor module of the display device.

Advantageously, the display device may comprise transverse tensioning means of the strip. Such a tension is obtained by stretching the band perpendicular to its direction of travel. This transverse tension makes it possible to confer on the poster visual qualities in terms of flatness, whatever the conditions of the external environment in which the poster is presented. Thus, the transverse tension allows in particular to improve the wind resistance of the poster.

In practice, the transverse tensioning means of the strip may comprise slides in which penetrate rushes or equivalent, present on the lateral edges of the strip.

Indeed, the band can be equipped at its selvedges sections of profiles having a bead and able to penetrate at the end of a slide. A flat portion of the rod emerges from the slideway at a groove and is connected by one of the gluing, welding or similar means to the band formed by the posters.

Thus, when the band is of endless type, the ring is also at the edges of the band. Such a rod may be made of a low friction material so as to facilitate the sliding of the rod inside the slide.

According to a particular embodiment, at least one of the slides can be movable in translation transversely to the direction of advancement of the strip. Indeed, the displacement of this slide relative to the other allows for an adjustment of the tension of the band, and in particular at the viewing face of the posters at the front frame.

Advantageously, the transverse tensioning means of the strip may comprise resilient return members secured by its ends with, on the one hand, the movable slide, and, on the other hand, the beam that secures the two modules together.

In other words, the tension of the band is obtained by stretching the elastic return members in a working position. The band is then inserted into the movable slideway to achieve the transverse tension of the band. The elastic return members then tend constantly to return to their rest position by bringing the movable slide of the beam on which they are fixed.

In practice, the display device may comprise means for longitudinal tensioning of the strip. Thus, such a voltage can be obtained in particular by controlling the power supply of the motorized rollers. According to another embodiment, it can also be obtained by changing the distance between two rollers and thus reducing or increasing the path traveled by the band.

The longitudinal tensioning means of the strip may comprise a roller movable in translation relative to at least one motorized roller in pivot connection with one of the modules.

In this way, it is possible to use only one motorized roller, the roller movable in translation being non motorized. This "crazy" roll is thus both in pivot connection to allow guiding of the strip, but also in sliding connection in a direction perpendicular to its axis of rotation to generate the longitudinal tension.

In practice, the roller movable in translation to achieve the longitudinal tension can be positioned inside or outside a module.

In the case where the mobile roller is positioned inside a module, the path of the strip makes it easier to assemble the two modules forming the display device and to place the strip on such a device. .

According to another variant, the roller movable in translation can be positioned outside the modules between two beams.

Indeed, in some embodiments, and especially in the case where the number of juxtaposed posters is greater than two, the path of the band must be increased inside the parallelepiped shaped device. Thus, the band makes a detour and its path can make a round trip between the visible face of the band at the front frame and the rear face of the device.

The means for moving in translation the movable roller can then be of different types, including using mechanical means such as counterweight pulleys so as to use the force of gravity to move the movable roller. But different means can be used and in particular elastic return means, or electrical devices for remotely controlling the translation movement of the mobile roller.

In practice, the display device may comprise attachment means disposed on its rear face. In this way, the display device can be suspended from its rear face on an existing wall or panel. These attachment means can be limited only to the area of the independent modules or extend on the beams connecting the two modules.

For some applications and especially in the outdoor environment, the device may also include a lighting system of the moving strip. Such a system can operate on the principle of backlighting, the band passing in front of the illuminating panel so as to allow viewing posters even in the dark. The band is backlit so as to make it constantly visible or attract the eye of the passer-by with very bright colors.

Different variants can be made and in particular each module can comprise several motorized rollers. The motorization of the rollers can be carried out independently by means of several motors, but it can also use a single motor driving a chain or a belt in connection with the various motorized rollers.

Advantageously, the motorization may be located in a housing that is independent of the module or at the end of the rollers. In the case where the two modules of one and the same device each comprise at least one motorized roller, electronic control means can make it possible to synchronize the supply of the different rollers so as to generate the longitudinal tension of the band but also so as to perform an alternating movement of the band.

Brief description of the figures

• Les figures 1 et 2 sont deux vues en perspective d'un dispositif en configuration montée et démontée, conformément à l'invention.
• Les figures 3 et 4 sont des vues de dessus de deux variantes d'un dispositif tel que représenté en figure 1.
• La figure 5 est une vue de profil du dispositif de la figure 1 solidarisé sur une paroi.
• La figure 6 est une vue en coupe transversale partielle de la variante de la figure 4.
• La figure 7 est une vue en perspective partielle d'un moyen de mise sous tension transversale de la bande, conformément à l'invention.
• La figure 8 est une vue de face d'un dispositif d'affichage conforme à l'invention.
• La figure 9 est une vue en coupe transversale du dispositif d'affichage de la figure 8.

The manner of carrying out the invention as well as the advantages derived therefrom will emerge clearly from the description of the embodiment which follows, given by way of indication and not by way of limitation, in support of the appended figures in which:

• The Figures 1 and 2 are two perspective views of a device in assembled and disassembled configuration, according to the invention.
• The Figures 3 and 4 are top views of two variants of a device as shown in FIG. figure 1 .
• The figure 5 is a profile view of the device of the figure 1 secured to a wall.
• The figure 6 is a partial cross-sectional view of the variant of the figure 4 .
• The figure 7 is a partial perspective view of a transverse tensioning means of the strip, according to the invention.
• The figure 8 is a front view of a display device according to the invention.
• The figure 9 is a cross-sectional view of the display device of the figure 8 .

Way of realizing the invention

As already mentioned, the invention relates to a scrolling display device allows the scrolling of a strip having at least two posters juxtaposed and forming a strip.

As shown in figure 1 , scrolling posters can be horizontal and continuous in one direction. Such a device (1) thus comprises two independent modules (10, 11) secured together by means of a beam (7).

A strip (4) of at least two posters (2, 3) is then moved in translation parallel to a front frame (5) so as to allow the display of the various posters (2, 3).

According to the invention, at least one of the modules (10) comprises a motorized roller (6) so as to drive the belt (4) in translation and guide means for performing a pivot type connection between the motorized roller (6) and the structure of the module (10).

Furthermore, the other module (11) comprises a crazy roller (18) which is not rotated. However, such a module (11) also comprises guiding means for making a pivot type connection between on the one hand the idler roller (18) and on the other hand the structure of the module (11).

The modules (10, 11) are arranged at the small sides (8, 9) of the rectangle formed by the front frame (5).

Thus, as represented in figure 2 such a display device can be dismantled into at least three elements of small size. Thus, the device (1) comprises two modules (10, 11) which can be superposed one above the other and a beam (7) to maintain the constant distance between the two modules (10, 11). Such a device is thus very simple to transport and storage is very compact.

When such a very large display device is to be transported, it can be conditioned disassembled to its place of use. In this way, it is possible to use conventional means of transport, such as heavy-duty industrial vehicles if the place of use is close or air transport means if the distance is important.

As shown in figure 3 such a device may comprise a plurality of motorized rollers (36). In this variant, the two modules (30, 31) are equipped with motorized rollers (36) whose drive is synchronized by means of one or more chains or belts at each module (30, 31). Advantageously, the power supply can be synchronized between the two motorized assemblies of each of the modules.

As shown, a roller (35) can be arranged at a module (30) so as to realize the longitudinal tension of the web (4).

As shown in the variant of the figure 4 a roller (45) positioned against the two modules (40, 41) can also be used to adjust the longitudinal tension of the web (4). This configuration is particularly adapted to the case where the number of displays forming the band is greater than two.

In this variant, the module (40) comprises two motorized rollers (46) synchronized with each other by means of a chain. The module (41), for its part, comprises two idle rollers (48) which are not rotated by means of a motor, but simply guided in rotation by means of guide elements so as to form a pivot connection between the module (41) and the two idle rollers (48).

As represented in figure 5 , the display device can be secured by its rear face to a wall (57) such as a wall or an existing billboard structure. Angled sections of section (55) can make it possible to hang the device very simply by making them cooperate with portions of complementary or identical sections secured to the wall (57).

As shown, the module (50) may consist of a lower motor part (54) equipped with a motor (53). This motor (53) can allow to drive several motorized rollers (56) by means of a chain or a toothed belt in particular.

A front frame (5) is attached to the front face so as to hide the various unsightly elements of the display device.

As represented in figure 6 , the roller (65) capable of generating the longitudinal tension of the strip (4) can be secured at its ends to tension cables (63). These cables (63) converge together through a system of pulleys (64) to a mass (62) suspended. The force of gravity then makes it possible to constantly tighten the band (4) in a direction parallel to its direction of advancement.

As represented in figure 7 , the transverse tension of the strip (4) can in turn be obtained by inserting its strips equipped with rods inside slides (72, 73). In the variant shown, the slide (73) is fixed relative to the beam (57) while the slide (72) is movable relative to the beam (67). Elastic return members such as springs (71) make it possible to generate the desired transverse tension by constantly moving the two slides away from each other.

As represented in figure 8 the device (1) can also be arranged to vertically scroll the web (4). In addition, the movement of the strip (4) can be alternating in the opposite direction and in this case be driven to the hub of two motorized rollers (16, 26) arranged in two modules (20, 21). Each of the two modules (20, 21) thus comprises a motor capable of driving a roller in both directions. The power supply of the various motors must then be synchronized to enable the longitudinal tension of the strip (4) to be achieved. In this embodiment, the display device (1) comprises two beams (7) arranged on either side of the strip (4).

As represented in figure 9 , in the case of a reciprocating system, the display device may comprise only two rollers (16, 26) which must then necessarily be motorized. In addition, in the case of a device for scrolling the strip (4) vertically, the device can be hooked by its rear face by means of profile portions extending along the modules (20, 21).

• il permet de faciliter le transport et le stockage des dispositifs de très grandes dimensions ;
• il permet de réduire le poids des rouleaux et donc simplifie la structure mécanique de maintien des rouleaux à l'intérieur du dispositif ;
• il est très rapide à assembler sur site et simple d'entretien en rendant possible le changement que d'un seul module notamment.

It follows from the above that a display device according to the invention has many advantages and in particular:

• it facilitates the transport and storage of very large devices;
• it reduces the weight of the rollers and thus simplifies the mechanical structure for holding rollers inside the device;
• It is very quick to assemble on site and easy to maintain, making it possible to change only one module.

Claims (11)

1. A display device (1) with horizontal or vertical, alternating or continuous scrolling of at least two juxtaposed posters (2, 3) forming a strip (4), said device (1) comprising a substantially rectangular parallelepiped outer geometry, posters (2, 3) being viewed on rectangular front frame (5), said strip (4) being driven in a translational movement parallel to said front frame (5) by means of at least one power roller (6, 16, 26), characterised in that it comprises two independent modules (10, 11) each comprising means for rotationally guiding at least one power roller (6, 16, 26) or at least one idle roller (18, 48), said modules (10, 11) being assembled together by at least one beam (7, 17, 27) and located on the shorter sides (8, 9) of the rectangle formed by front frame (5).
2. A display device as claimed in claim 1, characterised in that it comprises means of obtaining transverse tensioning of strip (4).
3. A display device as claimed in claim 2, characterised in that the means of obtaining transverse tensioning of the web comprise slide rails (72, 73) into which the beads on the edges of the strip penetrate.
4. A display device as claimed in claim 3, characterised in that at least one side rail (72) moves translationally and transversely relative to the direction in which strip (4) moves.
5. A display device as claimed in claim 4, characterised in that the means of tensioning the strip (4) transversely comprise elastic return components (71) attached by their ends to moving slide rail (72), on the one hand, and to beam (67) which joins the two modules, on the other hand.
6. A display device as claimed in claim 1, characterised in that it comprises means of obtaining longitudinal tensioning of the strip.
7. A display device as claimed in claim 6, characterised in that the means of longitudinally tensioning the strip comprise a moving roller (35, 45, 65) capable of translational movement relative to at least one power roller (36, 46) with a revolute joint to one of modules (30, 40).
8. A display device as claimed in claim 7, characterised in that the roller capable of translational movement (35) is located inside a module (30).
9. A display device as claimed in claim 7, characterised in that the roller capable of translational movement (45) is located outside modules (40, 41) between two beams (7).
10. A display device as claimed in claim 1, characterised in that it comprises means of fixing (55) on its rear face.
11. A display device as claimed in claim 1, characterised in that it comprises a system for illuminating the strip.

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