Patent Application
20200329887
The present invention relates to a museum showcase, i.e. a showcase designed and built for the conservation and display in a protected environment of cultural items, such as works of art, historical exhibits and the like, within the context of a display environment such as a museum, an exhibition or the like. The term showcase alone will be used sometimes below for the sake of brevity, although it still means a museum showcase.
The present invention relates in particular to a museum showcase in which at least one transparent wall is provided with an opaque shielding.
The tendency to increasingly use transparent walls is well known in the sector of museum showcases, so as to guarantee not only greater visibility of the works housed in the showcase, but also minimal visual impact of the showcase itself with respect to the works contained therein.
However, transparency is not always appropriate. For example, it may be appropriate not to show a technical space of the showcase, either because it disturbs the view or because this could provide inappropriate information on security or control systems. In these cases, it is obviously possible to resort to the use of an opaque wall to close the showcase specifically where transparency is not desired.
However, in many cases, it is preferable for a same wall to have transparent portions and opaque portions. This is typically the case in which a single wall closes an entire side of the showcase, wherein a main portion of the wall must be transparent to allow the visibility of the items displayed in the display space of the showcase, while a lower portion and possibly an upper portion—which are at technical spaces of the showcase—must be opaque.
In these cases, opaque shielding is employed, applied to the transparent wall on the inner face of the wall, i.e. the one facing the inside of the showcase.
The opaque shielding is often obtained by applying a paint to the wall. In this way, it is easy to give the opaque shielding the desired shape and size, as well as the colour.
However, the applicant realized that the paints used for obtaining the opaque shielding in the aforesaid way can easily emit volatile substances that then spread into the display space of the showcase. These volatile substances can be dangerous as they are aggressive against the items displayed in the showcase, especially when they are ancient and delicate items that require utmost attention for the correct conservation thereof. Therefore, if the showcase is intended to house items of this kind, it is not possible to obtain opaque shielding on transparent walls through the application of paint, unless the paint is applied on the outer face; however, an application on the outer face of the transparent wall visually alters the external aesthetic impact of the showcase and is not therefore desirable. Alternatively, it is possible to resort to different opaque shieldings from paint but which are more complex, less aesthetically desirable and however that do not exclude the possibility of emitting harmful volatile substances.
The problem therefore exists of realizing transparent walls with opaque shieldings that do not subject the displayed items to risks due to the emission of harmful volatile substances inside the display space of the showcase and that do not alter the external appearance of the showcase.
Therefore, the present invention relates to a museum showcase according to claim 1. Preferred features are set forth in the dependent claims.
More in particular, the invention relates to a museum showcase comprising a case which contains a display space separate from the external environment, wherein the case comprises at least one transparent wall provided with an opaque shielding, characterized in that the transparent wall is layered and comprises at least two glass slabs coupled to each other along respective proximal faces, wherein the opaque shielding is applied to one of the two glass slabs, on the proximal face thereof.
With this structure the opaque shielding is completely contained between the two glass slabs. Therefore, it does not jeopardize the external aesthetic appearance of the showcase, as the surface continuity of the outer face of the transparent wall remains intact; furthermore and above all, the opaque shielding is not in conditions such as to cause a risk of the emission of harmful substances inside the display space of the showcase, whatever substance it is made of.
Preferably, the opaque shielding is obtained through the direct application to the glass slab of a layer of opaque paint. As already mentioned, this shielding can be easily realized in the precise shape and dimensions required by each specific case; furthermore, its thickness can be reduced, such as not to create any disturbance in the coupling of the two glass slabs to each other.
Preferably, the glass slabs comprise an inner slab and an outer slab, and the opaque shielding is applied to the outer slab or alternatively to the inner slab. The choice between the two possibilities can be made based on which side of the shielding is to remain visible from the outside, e.g. due to the colour or any patterns.
Preferably, the glass slabs are coupled by means of a transparent adhesive polymer, more preferably EVA or PVB. These materials, which are known in themselves, guarantee not only excellent adhesion, although in the presence of opaque shielding, but also perfect transparency.
Preferably, the glass slabs comprise an inner slab and an outer slab, wherein the outer slab has a larger extension than the inner slab. In this way, it is possible to exploit the layered structure of the walls to realize housing seats for sealing gaskets simply and effectively, so as to ensure perfect insulation between the display space in the showcase and the external environment.
Further characteristics and advantages of the invention will be more evident from the following description of a preferred embodiment thereof, made with reference to the appended drawings. In such drawings:
In the figures, 10 indicates a museum showcase that comprises a case 11 which contains both a display space 12, intended to house items to be displayed and conserved, and a technical space 13, in which technical components of the showcase 10 are housed, not intended to be seen by the public such as, for example, climate control, air purification, moisture control, security and alarm systems, etc. In the example shown in the figures, the display space 12 comprises most of the space available in the case 11, whereas the technical space 13 is obtained in a lower portion of the case 11; in other embodiments the technical space could also be obtained elsewhere, e.g. in an upper portion of the case 11, in an intermediate portion of the case 11, and in more than one of these positions. In any case, as mentioned, it is a space that must not be visible by the public outside the showcase 10, but only by authorized personnel.
The display space 12 is separated, and preferably sealed, with respect to the external environment and with respect to the technical space 13.
The case 11 comprises a plurality of walls and in particular at least one transparent wall 20, which has a layered structure and therefore comprises two glass slabs, an internal slab 21 and an external slab 22 coupled to each other along respective proximal faces 21a and 22a; two distal faces 21b and 22b of the slabs 21 and 22 therefore respectively form an inner face and an outer face of the transparent wall 20.
The transparent wall 20 extends along the whole height of the case 11 and therefore embraces both the display space 12, and the technical space 13. So as not to make the transparent wall 20 visible from outside the technical space 13, an opaque shielding 25 is provided, applied to the transparent wall 20 at the technical space 13. The opaque shielding 25 is applied to the proximal face of one of the two slabs; in the example illustrated, in particular, the opaque shielding 25 is applied to the proximal face 22a of the outer slab 22; in another embodiment, the opaque shielding could be applied to the proximal face 21a of the inner slab 21.
The opaque shielding 25 is obtained by means of an opaque paint, applied (with any suitable means, according to the type of paint chosen) to the outer slab 22, obviously before it is coupled to the inner slab 21. Once the opaque shielding 25 has been applied, the two slabs 21 and 22 are coupled by means of a suitable transparent adhesive polymer sheet 26 such as, for example EVA, PVB or the like. In other embodiments, the opaque shielding 25 could be obtained through the application of a sheet of suitable opaque material.
Once the two glass sheets 21 and 22 are coupled to each other by means of the transparent adhesive polymer sheet 26, the shielding 25 remains fully confined inside the transparent wall 20; therefore whatever material it is made of, emissions of volatile substances, either towards the outside of the showcase 10, or especially towards the inside of the display space 12, are excluded, to the advantage of the conservation of the items placed in the showcase 10, inasmuch as they may be delicate and vulnerable to volatile substances. Furthermore, the shielding 25 is not directly visible on the outer face of the transparent wall 20, i.e. on the distal face 22b and therefore does not disturb the aesthetic “all glass” impact of the showcase 10. Further glass slabs (as well as the slabs 21 and 22) may be provided, e.g. to confer greater resistance to the transparent wall 20.
Furthermore, as is clearly visible especially in
