EP1958179A1

EP1958179A1 - Slats for rotary-prism display panels

Info

Publication number: EP1958179A1
Application number: EP06831125A
Authority: EP
Inventors: Gérard LARGE
Original assignee: MECATEC
Current assignee: MECATEC
Priority date: 2005-11-18
Filing date: 2006-11-16
Publication date: 2008-08-20
Also published as: EA200801334A1; FR2893751A1; FR2893751B1; WO2007057565A1; US20080276511A1

Abstract

The attachment device according to the present invention consists of at least one slat (51, 52) which in profile is in the shape of an arc of a circle, the internal face (54) of which is secured to snap-fastening means (55), whereas each slat (51, 52) has, at its snap-fastening means (55), an elastic-deformation height d allowing a pressure force to be exerted on the far edges (53) of each slat (51, 52) so that the continuous flaps (7) of a corresponding poster strip (5) are held between the said far edges (53) and the face (40, 41, 42) of a rotary prism (4).

Description

LATHES FOR DISPLAY PANELS A

ROTARY PRISMS

The present invention relates to a fastening device for the retention of an advertising poster consisting of poster strips which are intended to be placed on billboards with billboards with rotating prisms.

The advertising panels receiving this kind of sign, comprise a plurality of rotary prisms arranged side by side and rotating a fraction of a turn about their longitudinal axis by means of a driving device described, for example, in the European patent EP 05393308 belonging to the applicant.

Advertising billboards of this type generally comprise triangular-based rotational prisms which make it possible to successively present three advertising posters. The rotating prisms receive on each of their face a poster strip respectively constituting a separate poster that is presented during the rotation of said prisms.

Each rotary prism cooperates with a slat fastening device for the mechanical retention of the poster strips as described in the European patent EP1105859 belonging to the applicant.

The fixing device according to the present invention aims to improve the mechanical retention of the poster bands on the rotating prisms of advertising panels. The fastening device according to the present invention consists of at least one slat having a circular arc profile whose inner face is integral with latching means while each slat has at its latching means a height of elastic deformation d allowing to exert at the extreme edges of each batten a pressure force for retaining between said extreme edges and the face of the rotating prism the continuous flaps of the corresponding poster strip.

The fastening device according to the present invention comprises latching means which consist of two elastic and parallel blades arranged opposite one another in order to define a longitudinal channel, each blade having at its free end and at its end outside the channel a shoulder provided with two sides which are inclined in opposite directions by an angle α between 60 and 105 degrees. The fixing device according to the present invention comprises an angle α provided between the two faces which is equal to 90 degrees. The fastening device according to the present invention comprises a shoulder whose base of the first inclined face of each blade is provided, before elastic deformation, at a distance h from the inner face of each slat. The fixing device according to the present invention comprises latching means which cooperate with a groove formed in the face of each rotary prism and comprising a bottom and parallel walls each provided, towards the center of the groove, with a rib longitudinal having a beak-shaped profile.

The fixing device according to the present invention comprises a longitudinal rib which comprises a first horizontal flange parallel to the bottom of the groove and a second inclined flange extending the first side of the opening of said groove.

The fixing device according to the present invention comprises a longitudinal rib whose first horizontal pan is provided at a distance e from the outer face of each rotating prism. The fastening device according to the present invention comprises a distance h before elastic deformation of the slat which is of dimension smaller than that e.

The fastening device according to the present invention comprises latch latching means which are provided in the middle of said slat and carried by its main axis XX 'which merges with the central one of each face of the rotating prism.

The fastening device according to the present invention comprises slats which are symmetrical.

The fixing device according to the present invention comprises latching means of each slat which are offset laterally with respect to the central axis ZZ '. The fastening device according to the present invention comprises slats whose central axis ZZ 'is laterally offset from the central one YY' of each face of the rotating prism.

The fastening device according to the present invention comprises slats whose extreme edge furthest from the latching means is intended to cooperate after elastic deformation of the slat with the continuous flap of the poster strip.

The following description with reference to the accompanying drawings, given by way of non-limiting examples, will provide a better understanding of the invention, the characteristics it has and the advantages that it is likely to provide:

Figure 1 is a perspective view illustrating an advertising panel provided with movable prismatic members. Figures 2 and 3 are views respectively illustrating the fixing device before and after its snapping with a face of the corresponding rotary prism of the display panel according to the present invention.

Figures 4 and 5 are views respectively showing a variant of the fixing device before and after its snapping with a face of the corresponding rotary prism of the display panel according to the present invention. Figures 6 and 7 are views showing in detail the fixing device and its latching on one side of the corresponding rotary prism of the display panel according to the present invention.

FIG. 1 shows an advertising panel 1 essentially comprising a metal structure or frame 2 which has a rectangular opening 3 in which is housed a series of mobile members 4 in the form of a prism. The movable members or rotary prisms 4 are arranged so that their axis of rotation is oriented either vertically or horizontally. In the example envisaged, each mobile member or rotating prism 4 is presented along a vertical axis and comprises in cross section an equilateral triangle-shaped profile defining three display faces 40, 41, 42.

Each of the faces has a portion of an image that must be presented at the same time and for a determined duration to the public in order to achieve, by the combination of each image part, a complete advertising image.

For this, the movable members or rotary prisms 4 are side by side to rotate about their vertical axis so that their respective face 40, 41 and 42 is cyclically and at the same time in the same display plane to allow the full display of the advertising image.

The metal frame 2 consists of horizontal crosspieces 20, 22 integral with vertical crosspieces 24, 25 delimiting the rectangular opening 3 of the advertising panel 1.

Each crosspiece has a U-shaped profile whose opening 21 is in the same vertical plane as that containing the rectangular opening 3 of the advertising panel 1, knowing that this opening 21 is closed by a removable plate 23.

Inside the horizontal crosspiece 20 is housed and guided, at each mobile member or rotary prism 4, a mechanical device cooperating with modules, arranged to form a drive device of the wheel and worm type as described in European patents EP 0539308 or FR 0507973 belonging to the applicant. FIGS. 2 and 3 illustrate a fixing device 50 allowing the retention of a poster band 5 on the corresponding face 40, 41 and 42 of a mobile member or rotary prism 4 of an advertising panel 1. Each 5 poster tape is glued over its full height on a ribbon of plastic film 6 semi-rigid shape memory having continuous flaps 7 as described and protected in the patent EP 1105859 belonging to the applicant. The fixing device consists of a slat 8 made of a plastic material such as PVC having at rest, ie before it is attached to one of the corresponding faces 40, 41 and 42 of the rotating prism 4, a arcuate or curved profile. The arcuate profile of the slat 8 is provided with a radius for determining in the middle a height d representing the distance of elastic deformation of said slat (Figure 6).

The batten 8 has on its convex inner surface, that is to say, that coming into contact with the face 40, 41 and 42 of the rotary prism 4 after elastic deformation, of the latching means 11.

Depending on the width of the slat 8, that is to say, the distance L between the end edges 9, the latching means 11 are provided in the middle of said slat carried by its main axis XX '. In this case the central axis XX 'of the slat 8 merges with the central axis of each face 40, 41 and 42 of the rotary prism 4.

The latching means 11 are provided to cooperate with a groove 12 of complementary profile and formed in the middle and along the entire length of the face 40, 41 and 42 of the rotary prism 4.

The latching means 11 consist, over the entire length of the slat 8, of two elastic and parallel strips 13, 14 arranged opposite one another in order to delimit a longitudinal channel 15.

Each blade 13, 14 has at its free end and outside the channel 15 a shoulder 16 provided with two panels 17, 18 which are inclined in opposite directions so that the angle α provided between the two sides is between 60 and 105 degrees (Figure 7).

In the embodiment of the present invention the angle α provided between the two panels 17 and 18 is equal to 90 degrees (Figure 7).

The base of the first inclined face 17 of the shoulder 16 of each blade 13, 14 is provided before elastic deformation at a distance h from the inner face 10 of each slat 8 (Figure 6). The groove 12 provided on each face 40, 41 and 42 of each rotary prism 4 of the advertising panel 1 comprises, near its bottom 19 and on each of its parallel and opposite walls 26, 27, a longitudinal rib 28 having a profile of spout-shaped and extending towards the center of the groove 12.

Each longitudinal rib 28 has a first horizontal portion 29 and parallel to the bottom 19 of the groove 12 and a second inclined face 30 extending the first side of the opening of said groove. The first horizontal flange 29 of the longitudinal rib 28 of each groove 12 is provided at a distance e from the outer face 40, 41 and 42 of each rotary prism 4 (FIG. 7).

Note that the distance h separating the base of the shoulder 16 from the inner face 10 of each slat 8, before elastic deformation, is provided of a dimension smaller than that separating the first horizontal portion 29 from the outer face 40, 41 and 42 of each rotating prism 4 (FIGS. 6 and 7).

This difference in size between the distances h and e makes it possible, during the fastening of the slat 8, that the slat 8 can be deformed elastically so that its inner face 10 comes, over its entire width, in contact with the face 40, 41 and 42 corresponding rotary prism 4.

The fastening of each slat 8 is obtained by the cooperation of the elastic strips 13, 14 with the groove 12 of the face 40, 41 and 42 corresponding and more particularly when the shoulders 16 of each blade 13, 14 are housed between the bottom 19 said groove and the ribs 28 of each wall 26, 27.

The elastic deformation of the slat 8 allows to exert at its extreme edges 9 a pressure allowing the retention between said extreme edges and the face 40, 41 and 42 of the rotating prism 4 flaps 7 of the plastic film 6 semi-rigid to shape memory on which is glued a poster strip 5.

FIGS. 4 and 5 show a variant of the fixing device 50 when the width of the faces 40, 41 and 42 of the rotating prism 4 is greater than that of the production L provided between the extreme edges 9 of the slat 8.

Thus, each face 40, 41 and 42 of the rotating prism 4 comprises on both sides and at equal distance from its longitudinal and central axis YY 'two grooves 12 similar to those described above.

As regards the fixing device 50, the latter consists of two symmetrical slats 51 and 52 made of a plastic material such as PVC and having at rest, that is to say, before they are fastened on each face 40, 41 and 42 rotating prism 4 a profile arcuate or curved.

The arcuate profile of each slat 51, 52 is provided with a radius for determining at the level of the latching means 55 a height d representing the distance of elastic deformation of said slat. Each slat 51, 52 has on its convex internal face 54, that is to say the one coming into contact with the face 40, 41 and 42 of the rotating prism 4 after elastic deformation, latching means 55 similar to those 11 of the latte 8 previously described.

Note that the latching means 55 are offset laterally with respect to the central axis ZZ 'of each slat 51, 52. In this case the central axis ZZ' of each slat 51, 52 is offset laterally from the central one YY of each face 40, 41 and 42 of the rotating prism 4.

The positioning of the latching means 55 on each slat 51, 52 makes it possible to determine that one of the extreme edges 53 and more particularly that cooperating with the continuous flap 7 of the poster strip 5 is the furthest away from said means of latching 55.

Fixing the slats 51, 52 on a face 40, 41 and 42 of the rotary prism 4 is obtained by the cooperation of each latching means 55 with the corresponding groove 12 and in the same manner as for the latching means 11 described. previously.

The fastening of the slats 51, 52 causes an elastic deformation of the latter to exert at the extreme edges 53, the furthest away from the latching means 55, a pressure allowing the retention between said end edges 53 and the face 40, 41 and 42 of the rotary prism 4 the continuous flaps 7 of the corresponding poster strip 5.

Note when the slat 8, 51, 52 is retained on the face 40, 41 and 42 of the rotary prism 4 that the shoulders 16 of the fastening means 11, 55 do not come into contact with the bottom 19 of the grooves 12 formed in each face 40, 41 and 42.

It must also be understood that the foregoing description has been given by way of example only and that it in no way limits the scope of the invention which could not be overcome by replacing the execution details described. by any other equivalent.

Claims

1. Fastening device for retaining an advertising poster consisting of poster strips (5) comprising continuous flaps (7), each poster band (5) being intended to be fixed on the faces (40, 41). 42) of each rotary prism (4) of an advertising panel (1), characterized in that it consists of at least one lath (8; 51, 52) having a circular arc profile whose face internal (10, 54) is integral with latching means (11, 55) while each slat (8; 51, 52) has at its latching means (11, 55) a height of elastic deformation allowing to exert at the extreme edges (9, 53) of each slat (8; 51, 52) a pressure force allowing the retention between said extreme edges (9, 53) and the face (40, 41 and 42) of rotary prism (4) the continuous flaps (7) of the corresponding poster strip (5).

2. Fastening device according to claim 1, characterized in that the latching means (11, 55) consist of two elastic and parallel blades (13, 14) arranged opposite each other in order to delimit a longitudinal channel (15), each blade (13, 14) having at its free end and outside the channel (15) a shoulder (16) provided with two sides (17, 18) which are inclined according to opposite directions of an angle α between 60 and 105 degrees.

3. Fastening device according to claim 2, characterized in that the angle α provided between the two panels (17, 18) is equal to 90 degrees.

4. Fastening device according to claim 2, characterized in that the base of the first inclined face (17) of the shoulder (16) of each blade (13, 14) is provided, before elastic deformation, at a distance h of the inner face (10, 54) of each slat (8; 51, 52).

5. Fastening device according to claim 1, characterized in that the latching means (11, 55) cooperate with a groove (12) formed in the face (40, 41, 42) of each rotary prism (4) and having a bottom (19) and parallel walls (26, 27) each provided, in the direction of the center of the groove (12), with a longitudinal rib (28) having a beak-shaped profile.

6. Fastening device according to claim 5, characterized in that each longitudinal rib (28) comprises a first horizontal flange (29) parallel to the bottom (19) of the groove (12) and a second inclined flange (30) extending the first (29) on the side of the opening of said groove.

Fastening device according to Claim 6, characterized in that the first horizontal flange (29) of each longitudinal rib (28) is provided at a distance e from the outer face (40, 41 and 42) of each rotary prism ( 4).

8. Fastening device according to claims 4 and 7, characterized in that the distance Ji ₁ before elastic deformation of the slat (8, 51, 52), is of a dimension less than that e.

9. Fastening device according to claim 1, characterized in that the latching means (11) of the slat (8) are provided in the middle of said slat and carried by its main axis XX 'which merges with the central one of each face (40, 41, 42) of the rotating prism (4).

10. Fastening device according to claim 1, characterized in that the slats (51, 52) are symmetrical.

11. Fastening device according to claim 1, characterized in that the latching means (55) of each slat (51, 52) are offset laterally with respect to the central axis ZZ '.

Fastening device according to Claim 1, characterized in that the central axis ZZ 'of each slat (51, 52) is offset laterally from the central one YY' of each face (40, 41, 42) of the rotating prism ( 4).

Fastening device according to Claim 11, characterized in that the end edge (53) furthest from the latching means (55) is intended to cooperate after deformation of the slat (51, 52) with the continuous flap ( 7) of the poster band (5).