The present invention relates to electronic shelf labels and, in particular, to an electronic shelf label for mounting in a C channel of a retail shelf and to a method of mounting the label.

Electronic shelf labels are mounted throughout a store or business to display information about products located on shelves near the labels. The shelves typically have a C-shaped channel at the front edge. Presently, electronic shelf labels are mounted to the shelves with additional hardware fixtures, some of which attach to the shelves outside the C channel with screws or other fasteners. Additional hardware fixtures may also consist of long rails in which the labels fit in order to protect the labels from impacts, such as from shopping carts or forklifts. These additional hardware fixtures may also move the label out farther from the shelving, increasing the likelihood that the label will be knocked off the shelf. These additional hardware fixtures increase the unit cost and the installation time for each label.

Another difficulty in providing and mounting shelf labels is that the dimension of the opening of various C channels can vary by 1/4 inch to 3/8 inch between shelf manufacturers or between stores.

It is the object of the invention to provide a label which can be mounted securely in a C channel of a shelf despite wide variations in C channels among retail shelves of various stores and which does not require additional hardware fixtures.

According to the invention an electronic shelf-label comprising an electronic display portion and a housing portion containing the electronic display portion, characterized in that at least top and bottom edge regions of the housing portion are resiliently deformable and at least part of one of the regions is arranged for removal for reducing the height dimension of the housing for press fit in a label-receiving recess.

Also according to the invention a method of mounting an electronic shelf label in a shelf recess, the label having an electronic display device and a housing portion containing the electronic display portion and having resiliently deformable top and bottom regions, and characterized by the steps of removing at least a portion of one of the top or bottom regions having identified the height dimension of the shelf recess into which the label is to be introduced.

The invention will be described by way of example with reference to the accompanying drawings, in which:

• Figure 1 shows a shelf with an electronic shelf label mounted according to the present invention;
• Figure 2 shows an electronic shelf label according to a first embodiment of the present invention;
• Figure 3 shows the electronic shelf label of Figure 2 mounted securely in the C channel of Figure 1;
• Figure 4 shows an electronic shelf label according to a second embodiment of the present invention; and
• Figure 5 shows the electronic shelf label of Figure 4 mounted securely in the C channel of Figure 1.

Referring now to the drawings, in which like-referenced characters indicate corresponding elements throughout the several views, attention is first drawn to Figure 1 which shows an electronic shelf label 10 mounted in a C channel 12 of a retail shelf 14. Electronic shelf label 10 has a housing 22, a display 24, and circuitry. Electronic shelf label 10 may additionally have a tag with printed indicia 28. Electronic shelf label 10 may additionally have slots 30 in the housing 22 to aid in removal from the C channel. The electronic shelf label housing 22 is formed by a molding process, preferably by injection molding. Any plastic material such as thermoplastic, ultraviolet set plastic, reactive plastics or epoxies may be used, including other materials which can provide label housings according to the present invention. The material used must have some flexibility to allow slight deformation during installation. The label housing may be formed in a single size mold. Alternatively, the label housing may be formed having a height dimension smaller than required for shelf labels in general, then additional, separate layers of molded material, preferably of the same material as the housing, may be formed to provided a larger height dimension.

Referring to Figure 2, an electronic shelf label housing 50 of a first embodiment of the present invention is formed with an overall height dimension A which is intentionally oversized. The label housing 50 has a height at least slightly larger, and may be up to 3/8 inches larger, than or equal to the largest opening dimension of any standard shelf C channel. Each label housing 50 is formed with the same overall dimension regardless of the dimension of the shelf the label is intended for, even if the targeted shelf is known. For simplicity only one label housing 50 will be described as all the label housings are made substantially the same.

Sometime before installation, the targeted shelf is determined and the required height dimension of the label housing is determined. These determinations may occur when a preprinted tag is attached to the label housing, indicating that the label is targeted for a particular shelf in a particular store. The label housing 50 having a dimension A is shaped to provide a label housing 54 with the required dimension B. A mechanical tool such as a mechanical router, a cutter or a shaper removes any excess portion 52 from oversized label housing 50 to provide label housing 54 having the required height B. If the label housing was formed with an additional, separate layer of molded material (or layered stack of several moldings), one or more of the layers is removed to achieve the desired height B. Once the label housing is installed securely in the C channel, compression forces acting on the top and bottom of the label keep the separate molding layers firmly in place.

Figure 3 shows the label installed in the C channel 12 having a C channel opening height B, located on the targeted shelf. The height of the label housing 54 and the overall dimension of the C channel are substantially the same. The ends of the label housing 54 deform slightly when pushed into the C channel so that the ends of the label housing catch on the ends of the C channel, as shown in Figure 3. Pressing or hammering with a soft-headed ball peen hammer applies sufficient force to slightly deform the ends of label housing 54. (A cover plate may additionally be used to protect the label.) A key slot in one end of the label provides for easy removal of the label from the C channel into which it is fit. Thus, the label is installed securely in the C channel 12 of the targeted shelf without additional hardware.

The present invention provides an advantage in that all label housings can be formed having the same height dimension. Later when a targeted shelf is determined, a specific label housing can be easily shaped to press fit securely into the C channel of the targeted shelf.

Referring to Figure 4, an electronic shelf label housing 60 of a second embodiment of the present invention is formed with an overall height dimension C which is intentionally oversized. The label housing 60 has a height at least slightly larger, and may be up to 3/8 inches larger, than or equal to the largest opening dimension of any standard shelf C channel. Each label housing 60 is formed with the same overall dimension regardless of the dimension of the shelf the label is intended for, even if the targeted shelf is known. The label housing 60 has breakaway notches 68 for adjusting the overall dimension of the label housing as described below. The molded material comprising the areas between the breakaway notches 68 may be molded in a single mold operation or may include separate, molded layers as described hereinabove. For simplicity only one label housing 60 will be described as all the label housings are made substantially the same.

Sometime before installation of the label, including the time immediately before the label is mounted in the C channel of a shelf, the required height dimension of the label housing is determined. The breakaway notches 68 provide weak points, which break away from the label housing 60 when pressure is applied either manually or with a portable tool. The breakaway notches as shown in Figure 4 include a second notch 70 which prevents sliding of the molded pieces which could cause them to shear off when installed in the C channel. Additionally, if desired, the breakaway notches may be shaped so that removing a top portion tilts the label back for bottom shelf mounting. Alternatively, the breakaway notches may be shaped so that removing a bottom portion tilts the label forward for top shelf mounting. The aforementioned tilting of the front surface of the label, either upwardly or downwardly depending upon the location of the label relative to a customers eyes, can readily be achieved by at least varying the angle at which the line defining the breakaway bisects the front surface of the display and thus the manner in which the top, or bottom, surface of the housing abuts, and is deformed by its contact with, the C-channel. Depending on which portions are excess portions as shown in regions 62 and 64 to be removed, the overall dimension of the label housing 66 can be selected to range from a required height D to a required height E with various tilt angles depending on which portions are removed. Although the label housing shown in Figure 4 shows four breakaway notches, any number of breakaway notches may be provided to give desired flexibility in mounting size and tilt angles.

Figure 5 shows the label installed in the C channel 12 having a C channel opening height F, located on the targeted shelf. The height of the label housing 66 and the overall dimension of the C channel are substantially the same. The ends of the label housing 66 deform slightly when pushed into the C channel so that the ends of the label housing catch on the ends of the C channel, as shown in Figure 5. The breakaway notches 68 not removed before installation become compressed upon installation in the C channel as shown in Figure 5. Pressing or hammering with a soft-headed ball peen hammer applies sufficient force to slightly deform the ends of label housing 66. (A cover plate may additionally be used to protect the label.) A key slot in one end of the label housing provides for easy removal of the label from the C channel into which it is fit. Thus, the label is installed securely in the C channel 12 of the targeted shelf without additional hardware.

This second embodiment of the present invention provides an additional advantage that label housings can be modified without special tools immediately before installation in a shelf. The label housing is modified to fit securely in the C channel of the shelf without additional hardware fixtures.

Although the labels to be formed in accordance with the present invention may have a variety of depth dimensions, it is contemplated that at least the top and bottom edges of the label will fit securely within the C channel.

Additional advantages in reducing interference with normal store activities can be achieved by providing a label which has an overall depth dimension which fits inside the C channel. In any of the above embodiments, adhesive or tacky material may be applied to the top and bottom edges of the label housing to prevent the label sliding down the C channel. The adhesive should provide for removal by store personnel as needed.