WO1997015038A1

WO1997015038A1 - Poster backing

Info

Publication number: WO1997015038A1
Application number: PCT/DE1996/000420
Authority: WO
Inventors: Daniel Eich
Original assignee: Deutsche Städte-Reklame Gmbh
Priority date: 1995-10-18
Filing date: 1996-03-07
Publication date: 1997-04-24
Also published as: EP0856184B1; DE59607233D1; ATE202871T1; DE19538702A1; EP0856184A1

Abstract

A poster backing for raising or holding a poster, especially a poster (1) which can be withdrawn from a cassette (2), with a holder (3) securing and possibly tensioning the poster (1), is designed for the rapid and also easy changing of the poster while ensuring the optimum presentation and the simplest construction in such a way that the holder (3) has a supporting surface (5) for the whole of the poster (1) which is at least slightly curved towards the visible side of said poster (1).

Description

"Billboard"

The invention relates to a billboard for pulling or stretching a poster, in particular a billboard that can be pulled out of a cassette, with a holding device that holds the poster and, if necessary, spans it.

Billboards of the type in question here have been known in practice in many different embodiments for many years. The simplest billboard wall comprises a surface carried by a frame or a frame, to which the billboard or the billboard parts is or are glued. Billboards in the form of showcases, light boxes or the like are also already known, in which the poster is attached without glue or is clamped between a contact surface and a transparent cover and is thereby held. Such a device is particularly suitable for back-lighting or for illuminating the poster.

Billboards for posters to be stuck are problematic in the light of increasing environmental awareness, since the glue required to apply the poster contains environmentally harmful substances. A separation of the actual poster material - paper - from the glue is no longer possible after gluing. As a result, detached posters, on which there is always a large amount of glue residue, must be treated as hazardous waste, and in any case can no longer be recycled as paper.

In addition, there are the problems, on the one hand, of laboriously applying the poster using glue, and, on the other hand, of detaching it from the billboard in a much more complex manner. The sticking of a new poster as well as the detachment of an already stuck poster from the billboard take up a considerable amount of time with a not inconsiderable cost consequence. In addition, glue and other aids are always required to apply and remove the poster. Finally, the application of a poster with glue and the removal of a glued-on poster causes a considerable amount Dirt development in the area of the billboard, so that cleaning work in the vicinity of the billboard is often necessary. This increases the cost again.

The present invention is therefore based on the object of specifying a billboard for mounting or mounting a poster, in which a quick and convenient poster change is possible while ensuring the best possible presentation with the simplest construction of the billboard. The poster should be glue-free.

The above object is achieved in the manner according to the invention by the features of patent claim 1. Thereafter, the billboard in question here is designed for mounting or stretching a poster, in particular a poster that can be pulled out of a cassette, with a holding device that holds the poster and possibly spans it, in such a way that the holding device is used for the complete placement of the poster Visible side of the poster has at least slightly curved contact surface.

In the manner according to the invention, it has been recognized that a perfect presentation of a poster - without the use of a glue holding the poster - is possible when the poster lies completely against an abutment surface. However, such a complete concern is only possible to a limited extent with a flat, vertically aligned contact surface. In this respect, it has also been recognized in the manner according to the invention that a complete request is possible under certain conditions, namely when the contact surface is curved toward the visible side of the poster. In other words, the poster is clamped onto the forwardly arched contact surface or pulled up there and, due to the curvature of the contact surface, bears against the entire surface thereof. A slight curvature is already sufficient, especially since all that is required is a full-area system.

With regard to a specific configuration of the billboard, it is now advantageous if the contact surface is formed by a plate which is bent towards the visible side and is held by a frame, a stand, a frame or the like. This plate can be a curved wooden plate or metal plate. In a very particularly advantageous manner, the plate consists of transparent plastic, in particular of plexiglass. In this respect, a further advantage is created, namely that a transparent plastic plate can be illuminated or illuminated from the back, which has a very special effect for the poster - similar to conventional light boxes.

In order to avoid damage to the poster or to protect it from dirt or even against unauthorized removal, a cover that is curved to match the contact surface, can be placed on the poster that lies against the contact surface or spanned on the contact surface and thus covers the poster, at least largely transparent, could be provided . Instead of an already pre-bent cover, this could also be an elastically bendable, transparent cover that can be stretched over the poster, which is brought into the curved shape only when the cover is put on or when the billboard is closed by the cover. In this respect, a positive and non-positive fit of the poster and the cover on the contact surface would again be guaranteed. The poster would then be sandwiched between the contact surface and the cover and would be additionally secured against slipping or fixed overall.

The cover previously discussed protects the poster from the weather on the one hand and serves as theft protection on the other. To this end, it would be of further advantage if the cover was to be hinged to the billboard on one side, for example via a hinge, and to be clamped on the opposite side by means of a lockable mechanism. It would also be conceivable to insert the cover into grooves and to lock and finally lock it via holes and insertable bolts or the like. In any case, the use of a cover made of plexiglass also lends itself here, especially since this material can be elastically deformed or bent in an ideal manner.

With regard to a comfortable opening or opening of the poster, it is of particular advantage if the contact surface is in the vertical direction at least largely revolving towing system is used to pull up and possibly tension the poster. In this regard, there is no need to pull up the poster manually, rather the poster can be pulled up directly from a cassette on the contact surface and can be fixed in a predetermined - raised - position by the towing system itself. The towing system could have a conveying element that at least largely covers the contact surface and encircles the contact surface, which is designed, for example, in the form of a cloth, a film or the like and has holding elements for hanging or fixing the poster.

This conveyor could circulate around the contact surface in the form of an endless belt, at least at one point, i.e. along an imaginary horizontal line, holding members for holding, grasping or receiving the poster are provided. The conveying member designed in this way could furthermore run around the abutment surface in order to achieve a perfect endless conveying via deflection rollers running horizontally in the area of the upper end and the lower end of the contact surface, so that wear of the conveying member is minimized and easy circulation is possible.

In the context of an alternative embodiment and with regard to a construction that is particularly simple in terms of construction, the towing system on the two outer sides of the contact surface could comprise at least largely vertically running conveying elements with holding elements for the poster. With a considerable width of the contact surface, a further conveyor element could be provided in the area between the two outer conveying elements, this further conveying element preferably being arranged in the center of the contact surface. With a correspondingly broad design of the contact surface, the two outer conveying members could also be assigned several further conveying members, all of which circulate around the contact surface in the form of an endless belt.

As already stated above, the conveying members could encircle or span the contact surface as a whole, the drive and deflection devices required for this purpose being provided at the respective ends of the contact surface - above and below. However, it would also be conceivable for the contact surface in the Allow area of the upper and / or lower end to be pierced, so that the contact surface will at least largely circulate. In other words, the conveying members in the lower and upper region of the contact surface would extend through the contact surface, for which purpose corresponding passages or openings are provided.

The conveyor elements could be designed as a rotating conveyor belt, as a conveyor belt, as a conveyor belt, as a conveyor chain or the like. It is only essential that the conveying members are rotating, ie endless means, which are deflected by 180 ^{° in} each case similar to a conveyor belt or similar to a conveyor section at the end of the contact surface.

As already mentioned above, holding elements are provided on the conveying elements, which serve to receive the poster. These holding members could be provided in a horizontal line on all of the conveying members. It would also be conceivable to provide holding members in two areas of the conveying members, so that the conveying members do not have to circulate as a whole in order to re-hang a poster. The holding members could thus be repeated half way or the length of the conveying member.

In the context of a specific embodiment, the holding members of the conveying organs could be designed as a continuous, continuous hook strip. This hook bar is used to engage a correspondingly designed, opposing hook bar at the free end or at the end of the poster protruding from a cassette. Due to the opposite orientation of the hooks or hook bars, they can interlock, causing the poster to pull out of the cassette, but above all pulling it up against the contact surface and clamping it there with a guaranteed locking of the opposite end of the poster - fixed at the end in the cassette.

Likewise, the holding members could be designed as upward-facing individual hooks which engage in corresponding engagement areas of the poster. At least one hook would have to be assigned to each conveyor element, all hooks of the conveyor elements again lying on a horizontal line. Instead of attaching the hooks directly to the conveyor elements, these could be opened a bar which extends orthogonally to the conveying members and extends horizontally across the entire width of the contact surface and is firmly connected to the conveying members, the hooks arranged there being individual hooks and not a continuous hook bar. Correspondingly, the engagement areas of the poster could be formed in a driver bar fastened to the free end of the poster, whereby in the context of a very particularly simple configuration the driver bar could have recesses or passages or the like in which the hooks of the conveying members or bar can engage.

In the context of a particularly simple and technologically least complex design, it would be particularly advantageous if the holding members and corresponding engagement areas at the free end of the poster are designed in the manner of a needle felt connection. For example, the conveyor element could be provided with a felt or needle covering, so that the driver bar of the poster would only have to have the respective counterpart in some areas - needle covering or felt covering. Such a configuration would have the enormous advantage that the poster can be picked up and pulled out or stretched in any position of the conveying bodies.

For smooth actuation of the conveying elements, these could have deflecting rollers, rollers, wheels, wedge disks, pinions or the like in the region of the upper and lower end of the contact surface or immediately behind or immediately above or below, these rotatable deflecting means always referred to below as deflecting rollers are preferably connected to one another in a rotationally fixed manner via a lower and upper shaft.

The lower or upper deflection rollers could be drivable for the purpose of pulling up the poster for the circulating movement, whereby the conveyor organs are driven for the circulating movement. Specifically, for this purpose the lower or upper deflection rollers could be driven via a hand crank which can preferably be inserted from the side into the respective outer deflection roller or directly into the shaft. In the context of a simple and thereby automatic actuation, the lower or upper deflection rollers could be moved over one preferably be drivable from the side into the respective outer deflection roller or into the shaft insertable cordless handheld screwdriver or the like, which the operator of such a billboard always carries with him. A billboard equipped with an electric motor - stationary - would also be conceivable, which would either have a stationary electrical power connection or a solar cell supply. The towing system or the conveying elements could then be actuated virtually at the push of a button, the direction of rotation of the deflection rollers and thus the conveying direction of the conveying elements being switchable.

With regard to the provision of the poster, which has already been mentioned several times, it is of particular advantage in the context of the billboard according to the invention if the poster is made available from a special cassette, this poster - in contrast to conventionally glued billboards - already assembled or completed in the Cassette is available. The entire poster with all of its image information is rolled up in the cassette on a shaft that essentially corresponds to the width of the contact surface or the billboard.

For this cassette, a receptacle is provided immediately below the contact surface, so that the free edge of the poster or its engagement area or driver bar can be detected by the holding members of the conveying members at least when they are in a lower position. With exact positioning of the cassette or the driver bar located outside the cassette, the detection by the holding members could take place automatically. After positioning the holding members or the conveying members, the free end of the poster with the holding means provided there could easily be attached to or attached to the holding members. In any case, it must be ensured here that the free end of the poster is gripped by the holding members, so that the poster can be pulled out of the cassette as a whole and thereby be stretched.

The recording of the poster cassette also serves as a holding means for the poster fixed in the end of the cassette. This poster is pulled out of the cassette against the force of a spring and is thus on the contact surface tight fitting. Consequently, the cassette and thus also the receptacle for the cassette serves as a holding device for the lower end of the poster. Accordingly, the cassette remains in the receptacle for as long as the poster remains open. Consequently, it is of particular advantage here if the receptacle is designed as a lockable cassette compartment, so that unauthorized removal of the cassette and thus also of the poster is effectively avoided.

There are now various possibilities for designing and developing the teaching of the present invention in an advantageous manner. For this purpose, reference should be made on the one hand to the claims subordinate to claim 1, and on the other hand to the following explanation of an exemplary embodiment of the invention with reference to the drawings. In connection with the explanation of the preferred exemplary embodiment of the invention with reference to the drawings, generally preferred configurations and developments of the teaching are also explained. In the drawings shows

1 is a schematic front view of an embodiment of a billboard according to the invention,

2 is a schematic side view of the object of FIG. 1 with additional cover,

3 shows an enlarged representation, further simplified, of the upper region of the object from FIGS. 2 and

4 in an enlarged representation, further simplified, the lower region of the object from FIG. 2.

FIGS. 1 to 4 show, in the context of a respectively schematic — simplified — illustration of a billboard for pulling or stretching a bill 1, the bill 1 being pulled up or stretched out without glue. Specifically, this is a poster 1 that can be pulled out of a cassette 2 Billboard comprises a holding device 3 holding and thereby spanning the poster 1, by means of which the poster 1 is held as a whole.

According to the invention, the holding device 3 has a contact surface 5, which is used for the complete contact of the poster 1 and is curved toward the visible side 4 of the poster 1. This contact surface 5 is bent toward the visible side 4 according to the illustration selected in FIG. 2 and held by a frame 6 which is only indicated in FIG. 2. Ultimately, the contact surface 5 is formed by a plate made of plexiglass and clamped in the frame 6 in the bent state.

To cover the poster 1, a cover 7 is provided, which is curved in accordance with the contact surface 5 and can be placed on the poster 1 lying against the contact surface 5 or spanned on the contact surface 5, which in the illustration selected in FIG. 2 only in the not yet fully applied state is indicated. The cover 7 is pivoted at the upper end and can be pulled in, locked and locked at the bottom. As a result of the involvement, a force-fitting and form-fitting contact with the poster 1 or the contact surface 5 is created. The cover 7 serves to protect the poster 1, such a cover 7 not being absolutely necessary. Of course, the cover 7 is made of a transparent material, preferably plexiglass.

The figures show overall that the billboard according to the invention comprises a towing system 8 which at least largely encircles the contact surface 5 in the vertical direction and serves to pull up and tension the poster 1. In the exemplary embodiment selected in the figures, the towing system 8 has vertically extending conveying elements 9 both on the outer sides of the contact surface 5 and in the central region of the contact surface 5. On the conveying members 9, holding members 10 are in turn provided for gripping or for receiving the free end of the poster 1. In any case, it is essential that the conveying elements 9 penetrate the contact surface 5 in the region of the upper and lower ends and thus, as far as possible, run around the contact surface 5 - with the exception of the upper and lower edges of the contact surface 5. In the embodiment selected in the figures, the conveyor elements 9 are designed as endless conveyor belts. The holding members 10 provided there are designed as an upwardly directed, continuous hook strip, which is used to engage a correspondingly designed, opposing hook strip 11 at the free end of the poster 1. Ultimately, the two hook strips 10, 11 engage in one another, as a result of which the poster 1 can be pulled out of the cassette 2 and stretched over the contact surface 5.

As an alternative to the embodiment mentioned above and selected in the figures, the holding element 10 of the conveying element 9, which is designed as a hook strip, and the hook strip 11 of the poster 1 could be designed as individual hooks or as a needle felt connection. To avoid repetition, reference is made to the general part of the description.

In the figures it is also indicated that the conveying members 9 are guided over deflection rollers 13 which are arranged in the region of the upper and lower ends of the contact surface 5 and are each rotatably connected to one another via a shaft 12. The shaft 12 is only indicated by the axis of rotation. By driving the lower deflecting rollers 13, the conveying members 9 can be driven for the circumferential movement and thus for the drawing up or taking off of the poster 1.

In Fig. 1 it is indicated that the lower deflection rollers 13 can be driven via a hand crank 14 which can be inserted into the outer deflection roller 13 or shaft 12 from the side. Instead of the crank handle 14, an insertable cordless handheld screwdriver could also be used, so that the billboard according to the invention is virtually motorized.

Finally, FIGS. 2, 3 and 4 indicate that a receptacle 15 for a cassette 2 is provided directly below the contact surface 5. According to the illustration selected in FIG. 4, the receptacle 15 is positioned such that the free edge 16 of the poster 1 or its engagement area or hook strip 11 is held by the holding members 10 in the lower position or the hook strip forming the holding members 10 can be detected. The receptacle 15 is designed as a lockable cassette compartment.

Finally, it should be particularly pointed out that the exemplary embodiment discussed above only serves to explain the teaching according to the invention by way of example, but does not restrict it to the exemplary embodiment.

Claims

claims

1. Billboard (1) for pulling or stretching a poster, in particular a poster that can be pulled out of a cassette (2), with a holding device (3) holding and possibly spanning the poster, so that the holding device ( 3) has a contact surface (5) which is at least slightly curved towards the visible side (4) of the poster (1) and is used for the complete placement of the poster (1).

2. Billboard according to claim 1, characterized in that the contact surface (5) from one towards the visible side (4) bent, by a frame (6), a stand, a frame or the like. Plate (5) is formed.

3. Billboard according to claim 2, characterized in that the plate (5) consists of wood or metal.

4. Billboard according to claim 2, characterized in that the plate (5) made of glass or preferably transparent plastic, in particular plexiglass.

5. Billboard according to one of claims 1 to 4, characterized in that a corresponding to the contact surface (5), on the contact surface (5) or on the contact surface (5) stretched poster (1) can be placed, at least largely transparent cover (7) is provided.

6. Billboard according to one of claims 1 to 4, characterized in that an elastically bendable, over the poster (1) tensionable transparent cover (7) is provided.

7. Billboard according to claim 5 or 6, characterized in that the cover (7) consists of plexiglass.

8. Billboard according to one of claims 1 to 7, characterized in that a the support surface (5) in the vertical direction at least largely circumferential, for pulling up and possibly tensioning the poster (1) serving towing system (8) is provided.

9. Billboard according to claim 8, characterized in that the Schlepp¬ system (8) at least largely overlap the contact surface (5), the contact surface (5) encircling conveying member (9) in the sense of a cloth, a film or the like. With holding members (10) for the poster (1).

10. Billboard according to claim 9, characterized in that the conveying member (9) runs in the region of the upper end and the lower end of the contact surface (5) horizontally extending deflection rollers, the contact surface (5).

11. Billboard according to claim 8, characterized in that the Schlepp¬ system (8) on the two outer sides of the contact surface (5) extending Förderor¬ organs (9) with holding members (10) for the poster (1).

12. Billboard according to claim 11, characterized in that the Schlepp¬ system (8) at least one further conveying member (9) in the area between the two outer conveying members (9), in the case of a single further conveying member (9) preferably in the center of the contact surface ( 5).

13. Billboard according to one of claims 9 to 12, characterized in that the conveying members (9) circulate the contact surface (5) as a whole.

14. Billboard according to one of claims 9 to 12, characterized in that the conveying members (9) pierce the contact surface (5) in the region of the upper and / or lower end and circulate the contact surface (5) as far as possible.

15. Billboard according to one of claims 11 to 14, characterized in that the conveyor member (9) is designed as a conveyor belt, conveyor belt, conveyor belt, conveyor chain or the like.

16. Billboard according to one of claims 8 to 15, characterized in that the holding members (10) are designed as an upwardly directed, continuous hook strip, which for engagement in a correspondingly designed, opposing hook strip (11) at the free end of the poster (1 ) serves.

17. Billboard according to one of claims 8 to 15, characterized in that the holding members (10) are designed as upward, in corresponding engagement areas of the poster (1) engaging hooks.

18. Billboard according to claim 17, characterized in that the hooks on a orthogonal to the conveying members (9) across the width of the contact surface (5) extending, with the conveying members (9) fixedly connected bar are arranged.

19. Billboard according to claim 17 or 18, characterized in that the engagement areas of the poster (1) are formed in a driver strip attached to the free end of the poster (1).

20. Billboard according to one of claims 8 to 15, characterized in that the holding members (10) and corresponding engagement areas at the free end of the poster (1) are designed in the sense of a needle felt connection.

21. Billboard according to claim 9 and possibly one of claims 10 to 20, da¬ characterized in that the conveying members (9) arranged in the region of the upper and lower ends of the contact surface (5), each with a shaft (12) ¬ mutually non-rotatably connected deflection rollers (13), rollers, wheels, wedge disks, pinions or the like. And by driving the lower or upper deflection rollers (13), preferably the lower deflection rollers (13), can be driven for circumferential movement.

22. Billboard according to claim 21, characterized in that the lower or upper deflection rollers (13) via a preferably from the side in the outer deflection roller (13) or the shaft (12) insertable crank handle (14) can be driven.

23. Billboard according to claim 21, characterized in that the lower or upper deflection rollers (13) via a preferably from the side in the respective outer deflection roller (13) or in the shaft (12) insertable cordless handheld screwdriver or the like can be driven .

24. Billboard according to one of claims 1 to 23, characterized in that a receptacle (15) for a cassette (2) is provided immediately below the contact surface (5), so that the free edge of the poster (16) or its engagement areas is or can be grasped by the holding members (10) located in the lower position.

25. Billboard according to claim 24, characterized in that the receptacle (15) is designed as a preferably lockable cassette compartment.