CN1292133A - Display element for picture-changing signboards - Google Patents

Abstract

The invention relates to a bar-shaped display element(18)which has three rectangular, picture-bearing surfaces(12, 14, 16)positioned as long sides of a body with a cross section in the shape of an equilateral triangle. According to the invention, the display element(18)is produced from a plane, sheet-shaped piece of rigid material which is bent to form a dimensionally stable, hollow body with a cross section in the shape of an equilateral triangle, two of its long sides(12, 16)being fastened to one another by means of at least one fastening flap(22)which is continuous with one long side(16)and is folded in inside the other long side and permanently attached to the inside of the latter. The blank from which the display element(18)is produced suitably consists of corrugated board with an outer plane layer suitable for printing.

Description

Display elements for billboards with changing images

The present invention relates to a bar-shaped display element for mounting on an image-changing billboard and having three rectangular image-bearing surfaces on the long sides of a body whose cross-sectional shape is equilateral triangle.

Rod-shaped display elements for image-changing billboards generally have a rectangular core made of light metal, to which three rectangular image- or information-bearing surface elements, so-called strips, are detachably fastened. The portion of the image displayed by the billboard is pasted on each slat. Thus, with three steps of 120° rotation of each lever, the billboard can display three different images.

In order to replace the information (image) on the billboard, it is conventionally necessary to remove the strip from the support (core) and install the strip with the new information.

Another more complex method of changing the information on the image changing billboard is to paste the new image information on the side surface of the rod-shaped element in the field, either in the form of a single strip, or after fixing the large image information. Cut the surface into strips.

Yet another method of changing the message on an image changing billboard is to have each display element in the form of a triangular bar of one-piece construction and replace all of the display elements when changing the message. This method is used when all three sides change at the same time and is more expensive, so it is mostly used by people who change information occasionally.

The common feature of the above-mentioned methods for changing images and information on billboards is that their total cost of manpower and materials is relatively high, so the information on billboards is usually changed only a few times a year at most.

EP-A2-0379311 discloses a display element for image changing billboards, the element comprising a printed cardboard folded into a hollow prism of triangular cross-section, two legs connected by a central rod Seats, each having two wall portions and two projections for holding the ends of the prisms in a triangular shape. In order to be able to mount and disassemble these cardboards on their supports, it is necessary to form an open slot through which the central support rod can pass on one of the three longitudinal edges, which leads to complicated mounting and dismantling. The folded cardboard itself is spatially incapable of forming a dimensionally stable display pole body which is directly mounted on the upper and lower pole supports of the image-changing billboard.

In view of the above-mentioned technical background, it is necessary to simplify the production and transformation of the information-bearing display elements with the above-mentioned problems and reduce the cost, so as to set more favorable pre-processing for more frequent replacement of information on billboards. This requirement is especially present in smaller image-changing billboards, such as promotional billboards used in shops and the like.

For this purpose, it is proposed according to the invention that a display element of the above-mentioned type is produced from a planar plate-shaped piece of rigid material which is bent to form a dimensionally stable hollow space with an equilateral triangular cross-section. The main body fastens the two long sides of the display element to each other with at least one fixing flap. A securing flap is attached to one long side and is folded over and permanently attached to the inside of the other long side. In this way it is possible to produce a structurally simple, inexpensive and dimensionally stable display element which can be mounted directly into the rotatable upper and lower supports in the billboard, which is still in a flat cardboard (blank) ) form, that is, before being bent together to form a finished rod-shaped display element, the three partial segments can be provided with three different image information, preferably by a printing process. Then, a corrugated board with an outer planar layer suitable for printing should preferably be used as the board-shaped material. Alternatively, rigid card stock can be used.

The invention also includes a cardboard (blank) for a rod-shaped display element of the type described for making an image-changing billboard, the cardboard comprising a plate-shaped piece of rigid material having three adjacent rectangular panels of equal size , each of the three rectangular panels has been provided with, for example by printing an image information part section, or each of the three rectangular panels has a Free surface on which partial sections of an image information can be glued after cardboard has been bent together to produce a rod-shaped display element as a semi-finished product, at least one of the two outer panels having one or more strip connections Attachment flaps of the unit for permanent attachment to other exterior panels.

Describe the present invention in detail below in conjunction with accompanying drawing, in accompanying drawing:

Fig. 1 shows the corrugated cardboard (blank) that is used for the rod-shaped display element of the image changing billboard of the present invention;

Figure 2 represents a perspective view of a display element of the invention made from the cardboard (blank) of Figure 1;

FIG. 3 shows a schematic view of an example of a rod holder engaged with the display element of FIG. 2 and mounted in a frame portion of an image changing billboard.

In FIG. 1 , cardboard of rod-shaped hollow display elements having an equilateral triangular cross-section for making so-called image-changing billboards is indicated generally at 10 . As shown in FIG. 2, the cardboard 10 preferably comprises a corrugated board having an outer planar layer suitable for printing and has three information-bearing long sides for forming 'the triangular-shaped display rod element 18 which is made'. Adjacent rectangular panels 12 , 14 , 16 . Preferably at the (blank) stage of the cardboard a partial section of an image or message is pre-printed on each panel 12, 14, 16, the image or message changing in image together by a plurality of adjacent rods displayed on billboards.

Between the panels 12 and 14 and panels 14 and 16, the cardboard (blank) 10 is provided with creases 20 for easy folding or bending of the cardboard 10 into the final triangle in FIG. 2 . The cardboard 10 may also be provided with a fixed flap 22 on one of its long sides for being attached to the inside of the panel 12 when the cardboard is bent together, as shown in FIG. and 16 and the entire rod-shaped element 18 are permanently fixed together. Other forms of fastening means may also be used to secure the sides of the rod-shaped element together. In this case, a very light and inexpensive display element can be obtained.

While the panels 12, 14, 16 are most suitably pre-printed with their respective image portions on the panels 12, 14, 16 at the cardboard (blank) stage, the present invention can be printed after the cardboards are folded together, or after the cardboard 10 is folded. Individually printed "image labels" are affixed to the panels 12, 14, 16 either before or after they are brought together.

For example, eight rod-shaped elements 18 of the present invention may be arranged in a group and removably mounted on rotatable mounts in opposing frame elements of an image-changing billboard, thereby displaying three different images together on the billboard. information. One of the opposing rod mounts 24 (FIG. 3) is preferably a non-driven rod mount which is elastically movable in the direction indicated by the arrow in FIG. 3 along the axial direction of the rod-shaped element in the billboard. Rod support 24 has a socket 26 for operative engagement with a corresponding end of display element 18 of the present invention. Both rod supports can be axially stationary, so that the rod-shaped element 18 is first pushed into the socket of the upper rod carrier and then lowered through this socket and into the socket of the lower rod carrier.

Claims (5)

1. the rod display element (18) that is used for being installed in an image change billboard has three and is positioned a rectangular image load-bearing surface (12 that has on the long side of main body of equilateral triangle xsect, 14,16), it is characterized in that, described display element (18) is made of the plane panel-like member (10) of a rigid material, described plane panel-like member (10) is bent to a dimensionally stable and has the hollow body of an equilateral triangle xsect, two long side surfaces (12,16) by at least one fix (with) tabs (22) and interfixing, this fixedly tabs (22) link to each other with a long side surface (16), and be folded on the medial surface of another long side surface (12) and permanently be connected to latter inboard.

2. display element as claimed in claim 1 is characterized in that, the flat-form material (10) of making described rod-like elements (18) is made of the corrugated plate with an outerplanar layer that is suitable for printing.

3. display element as claimed in claim 1 is characterized in that, the flat-form material (10) of making described rod-like elements (18) is made of card stock.

4. be used to make the presspaper (base) of the rod display element (18) that an image change billboard uses, it is characterized in that, it comprises that one has the adjacent rectangle panel (12 of three same sizes, 14, the panel-like member of rigid material 16) (10), described three rectangular panel (12,14,16) be used to paste the part of the image that should show by billboard, perhaps as preferred, described three rectangular panel (12,14,16) go up a part of pasting the image that should show, described at least two outer panels (12 by billboard, 16) outer panels (16) in has one or more fixedly tabs (22), this fixedly tabs (22) have a coupling arrangement that is used for for good and all being connected to other described outer panels (12).

5. presspaper as claimed in claim 4 is characterized in that, the structural member of described rigid material (10) is made of corrugated plate.

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