DE102005061854A1 - Single-panel safety glass element useful as a facade component of a building, comprises a persistently luminescent, afterglow element on the basis of persistently luminescent inorganic luminophores - Google Patents

Abstract

The single-panel safety glass element (1) useful as a facade component of a building (3), comprises a persistently luminescent, afterglow element on the basis of persistently luminescent inorganic luminophores. The glass element is coated on the surface pointing away from a viewer (4) with the afterglow element made of persistently luminescent pigments. The persistently fluorescent and inorganic fine pigments are incorporated in a largely transparent matrix and are excited by means of sunlight or artificial light. A colored emission is produced for more than 10 hours after termination of the exciting radiation. The single-panel safety glass element (1) useful as a facade component of a building (3), comprises a persistently luminescent, afterglow element on the basis of persistently luminescent inorganic luminophores. The glass element is coated on the surface pointing away from a viewer (4) with the afterglow element made of persistently luminescent pigments. The persistently fluorescent and inorganic fine pigments are incorporated in a largely transparent matrix and are excited by means of sunlight or artificial light. A colored emission is produced for more than 10 hours after termination of the exciting radiation in such a manner that the emission is perceived by the human eye that is adapted to darkness in dark or dim environment. The afterglow element spans across a part of the visual surface of the glass element and is in the form of a graphic design (5). The glass element is designed in such a manner that the visual appearance is similar to window elements (2) of the building. The matrix of the afterglow element is composed of inorganic glass frits and a two-component transparent coating composition. The persistently luminescent pigment is an aluminate that is doped with a rare earth element, and/or a silicate, and the like, or a zinc sulfide afterglow luminophore or mixtures of several persistently luminescent pigments of different excitation and decay rates and different colors of emission are used. The afterglow element is graphically applied directly to the rear side of the glass using screen printing or transfer printing process and is designed in such a manner that several layers are superimposed and/or placed side-by-side and glazing, translucent and/or color-converting and/or color-giving and/or reflective and/or luminescent and/or absorbing elements, and/or elements with persistently luminescent pigments with different persistent luminescence and persistent luminescence colors are used. The persistently luminescent pigment is excited by a radiation of wavelength of 200-450 nm, and has persistent luminescence duration of greater than 20 hours up to a luminance of 0.3 mcd/m2> and an emission in the wavelength range of visible light. The persistently luminescent pigment is formed from nanoscale inorganic pigments or agglomerates or aggregates in the sub-micrometer range up to a few micrometers of the pigment dimensions or crystalline pigments of 5-30 microns. An independent claim is included for a procedure for the production of a glass element.

Description

object The invention is a glass element as part of a facade of a building with at least one long persistence element based on inorganic photoluminescent luminophore or combinations of different Luminophores embedded in a polymeric or glassy matrix are and are preferably designed graphically and on the back a glass element, in particular a toughened safety glass (ESG) Elementes are arranged.

One Such glass element with a long afterglow effect finds as Decorative element and / or lighting element on the outer facades of buildings Application.

With the EP 0 828 657 B1 and the US Pat. No. 6,828,043 B2 has become known a long persistence application in aircraft technology. There, photoluminescent pigments are proposed for the lighting of escape routes. However, a large-scale application for the generation of different lighting effects in day-night operation is not apparent from this.

With the DE 103 22 561 A1 is a glass element with a light frame and at least one long afterglow strip for use as a decorative element on exterior facades known. However, a large-scale application as an optical facade design is not apparent from this. The double pane insulating glass construction produces an undesirably high basis weight, which prohibits the use of large-sized glass elements on the facade.

The invention is based on the DE 103 22 561 A1 the object of developing a glass element of the type mentioned so that it is suitable for a facade cladding for a building with a long afterglow effect. In particular, such a glass element should be similar to a window element can be integrated into a facade.

The solution The task is carried out by the technical teaching of the claim 1.

According to the invention now for reasons of cost and construction no insulating glass structures but it will be simple glass with it behind arranged functional layer used.

In order to There is the advantage that even large-scale facade panels (e.g., in the 3x6 format Meter) at simpler, cheaper and fail-safe bracket can be used. With such - both by day in a first color, as well as by night in a second Color - brilliant radiating surface elements can now completely new facade designs are realized.

The not front coated with the long persistence pigments (Weather side) is easy to clean and provides for the downstream House wall excellent weather protection.

The simplest version The invention provides for the use of a float glass element. Indeed such a glass element splinters in the event of breakage and meets the usual safety regulations for facade elements on buildings Not. Therefore, for cost reasons simple tempered safety glass (ESG) constructions chosen in case of a break break into small pieces of glass and so essential contribute to personal safety.

Next The use of float glass or preferably ESG elements can of course also CSG (Laminated safety glass) elements are used.

at a first embodiment the invention, such glass elements are back with the entire surface a polymeric or inorganic matrix with inorganic photoluminescent Coated pigments. In both cases, the matrix is largely transparent for visible Light up to the long-wave UV range. This can be an efficient Stimulation of long persistence pigments and long afterglow emission can be radiated unhindered.

often become such full-surface long afterglow coatings graphically by a masking or color-filtering or color-converting Layered, and it is achieved by a day-night effect. This is a brilliant presentation of advertising messages.

Around a high light output or long persistence achieve, are usually relatively thick afterglow layers used, for example, by some 100 up to 300 μm Thickness, and such layers are then almost opaque opaque. However, good long-lasting afterglow pigments are relatively expensive are, are rather thinner Layers used, and it therefore becomes a reflective layer arranged behind the afterglow layer.

In a second embodiment, the long persistence pattern is graphically arranged on the back of the glass by means of a screen printing process or transfer process, and this piecewise graphically designed long afterglow structure is provided with a suitable one Cover provided so as to produce a day-night effect. This causes a reflection of sunlight shining through the long persistence matrix.

In Another embodiment of the invention is the long afterglow structure in terms of of the day effect in color. Usual long persistence pigments have a slightly yellowish intrinsic color, and when using a Transparent matrix such structures also appear easy yellowish and often yellowish-greenish or reddish.

The Matrix is therefore slightly colored, being the permeability the excitation and emission light is guaranteed. such translucent admixtures can color-filtering or color-converting (down-conversion or Stokes effect) be educated, and they can be organic or be inorganic. When using glass frits It is preferred to use inorganic, color-converting admixtures. In a polymeric matrix of, for example, a two-component clearcoat from the automotive industry are a variety of possible Admixtures available.

Next the addition of coloring substances in the matrix can still fine, translucent or translucent prints on the back of the glass be installed, so between the back glass surface and the long persistence structure.

So are, for example, fine titanium dioxide structures with a very good white effect arranged graphically. This graphic design will be in the daytime in the Perceived white color. In dark surroundings predominates then the respective emission color of the Langnachleuchtpigmentes, ie greenish, yellowish, reddish, bluish or orange, where such colors provide a good signal effect. The White additional However, layer costs about 5 to 20% of the emission brightness the long afterglow effect.

There Such glass facade cladding elements usually in a glass front of a building are integrated and window elements are usually a sunshade or other inorganic thin Coating with a special color of golden to blaufärbig or silver-colored have up to a Verspiegelungseffekt, it may be necessary that also the glass facade cladding element on the inside of these Coating and only then the various graphic designs are arranged.

The Holder of such glass facade cladding elements can be attached to two Pages, on all four sides line or punctiform done and it can be additional Fasteners are arranged in the inner region. Further can be fixed by means of frame elements, by means of gluing technique or by perforated holes and screw or snap and plug connections done.

All in the documents, including Summary of information and features, in particular the spatial training shown in the drawings as claimed essential to the invention, as far as they individually or in Combination opposite the prior art are new.

The Invention will now be described with reference to several embodiments. Here are more from the drawings and their description Advantages and features.

there demonstrate:

1 : schematic representation of a building with a facade and facade elements.

2 : Section through a first embodiment of a facade element.

3 : Cut through a second execution

4 : Cut through a third execution

5 : Cut through a facade

6a - 6f : Schematic representation of various holders of the formed as a glass element facade panel

7 : the representation of the day / night lighting effect of the glass element.

The 1 shows a schematic representation of a glass element according to the invention ( 1 ) with a graphic design ( 5 ) in a building ( 3 ) in conjunction with window glass elements ( 2 ) for visual perception by an observer ( 4 ), wherein the glass elements ( 1 ) above or laterally or below or in different arrangements around a window glass element ( 2 ) can be arranged.

The 2 shows a schematic representation of a glass element according to the invention ( 1 ) in a sectional view based on a glass element ( 9 ), which is preferably an ESG element and optionally with an inorganic thin coating ( 8th ) outside or inside ( 14 ) and the long persistence layer ( 10 ) with the long persistence pigments ( 11 ) in a largely transparent matrix ( 12 ). It is important that the long persistence layer ( 10 ) on the Is arranged facing away from the viewer side of the glass element and thus good protection against abrasion, damage and weathering is given.

Furthermore, in this embodiment, the long persistence layer ( 10 ) over the entire surface of the glass element, which ensures an impressive, large-scale and brilliant color reproduction in the operating case.

The only optionally present, thin layers ( 8th . 14 ) are usually due to the color and effective design of the glass elements ( 2 ) adapted. The long persistence pigments ( 11 ) are caused by sunlight or artificial light ( 6 ) are excited with at least light components in the long-wave UV range and emit a colored light ( 7 ) over many hours after the stimulation ( 6 ), which is well done by an observer ( 4 ) can be perceived in a dark environment.

The 3 shows a schematic representation of a glass element according to the invention ( 1 ) as in 2 in which case a covering layer ( 13 ) behind the long persistence layer ( 10 ) is arranged.

This cover layer causes the reflection of the incident light ( 6 ) and thus enhances the excitation of the long persistence pigments ( 11 ). The cover also serves to passivate the back of the light element ( 1 ) and provides additional rear protection against abrasion and damage.

The 4 shows a schematic representation of a glass element according to the invention ( 1 ) with a partial and graphically designed long persistence structure ( 10 ) and a cover layer ( 13 ). This means that the invention is not limited to a full-surface coating of the glass element. Therefore, only partial structures of the glass element with long persistence layers ( 10 ).

If now this cover layer ( 13 ) is white or colored, then the long persistence structure ( 10 ) are designed according to contrast color, with a daylight effect and a night light effect are given.

The 5 shows a schematic section of a glass element according to the invention ( 1 ) with a graphic design ( 5 ) in a building ( 3 ) in conjunction with window glass elements ( 2 ) for visual perception by an observer ( 4 ), wherein the glass elements ( 1 ) above or below or laterally of window glass elements ( 2 ) can be arranged.

Usually, such glass elements ( 1 ) on an isolation ( 17 ) of a masonry ( 16 ) arranged. The masonry ( 15 ) is shown in this case as a base element, but can also with a glass element ( 1 ) be equipped. The glass elements ( 1 ) can form the entire surface of the facade itself. This then gives a completely made of glass elements facade.

Likewise, it is provided that the glass elements ( 1 ) replace only partially existing façade elements and form the façade flush with them. The glass elements ( 1 ) are thus only partially inserted into the existing facade.

The 6a to f show schematic representations of a glass element according to the invention ( 1 ) With the different mounting options, the type of mounting can be done by means of frame elements, by means of adhesive technology, by means of hole mounting and screwing or hooking and the like fastening technologies. The 6a shows the edge fixing with horizontal frame or adhesive elements.

The 6b shows the same fastening technology with marginal vertical fastening strips.

The 6c shows the encircling attachment while 6d represents a merely point-shaped holder at the four corners of the glass element.

The 6e shows the combination of fastening technology 6c along with punctiform retaining elements, while 6e shows a peripheral edge-side attachment with likewise internal point-shaped retaining elements.

The 7 shows a schematic representation of a glass element according to the invention ( 1 ) in plan view with a graphic design ( 5 ). This graphic design is now perceived during the day in a different color than at night. It is important that at night the graphic design is well perceived in front of the long luminescent, colored background of the glass element.

It can also be provided that the graphic design itself is designed as a luminescent element and the background (this means, the rest area of the glass element) either does not light itself or in one Another color is luminescent.

1

glass element as part of a facade of a building with at least one long persistence element based on inorganic luminescent luminophores

2

Window glass element

3

building

4

observer

5

graphic Design in facade glass element (1)

6

Excitation radiation: Sunlight or artificial Light from, for example, fluorescent tubes with at least a portion on long-wave UV light

7

emission light or emission radiation

8th

inorganic thin coating the facade glass element (1) on the outside: vacuum technology or applied pyrolytically or chemically; Anti-reflective coating or Sunscreen coating and the like

9

Glass element: Float glass or preferably ESG or VSG

10

Langnachleuchtelement or layer

11

Langnachleuchtpigment: e.g. rare earth-doped aluminates and / or silicates and the like or zinc sulfide afterglow luminophores or mixtures of several Long persistence pigments of different excitation rates, different decay rate and different emission color

12

Matrix: inorganic or organic; e.g. Glass frits or solder glass or polymers transparent adhesion-promoting systems such as a two-component Transparent car paint or a screen-printing lacquer adhering to glass

13

LAYER: with the function of opacity or Coloring or passivation and the like

14

Inorganic thin coating of the façade glass element ( 1 ) on the inside: applied by vacuum technology or pyrolytically or chemically; Antireflective coating or sunscreen coating and the like

15

masonry or facade floor element of a building

16

masonry or facade background of a building

17

isolation a masonry or the facade background of a building

Claims (15)

Glass element ( 1 ) as part of a facade of a building ( 3 ) with at least one long persistence element ( 10 ) based on inorganic luminescent luminophores ( 11 ), characterized in that the glass element ( 1 ) is designed as a single-pane glass, in particular as toughened safety glass (ESG), whose surface facing away from the viewer with a long persistence element ( 10 ) is coated from long persistence pigments. Glass element according to claim 1, characterized in that the inorganic fine long persistence pigments in a substantially transparent matrix ( 12 ) and by means of solar or artificial light ( 6 ) are excitable. Glass element ( 1 ) according to claim 1 or 2, characterized in that at least five, in particular more than 10 hours, after elimination of the excitation irradiation ( 6 ) a colored emission ( 7 ) is perceivable for the darkly adapted human eye and thus in a dark or dim environment. Glass element ( 1 ) according to one of claims 1 to 3, characterized in that the long afterglow element ( 10 ) over the entire (visible) surface of the glass element ( 1 ). Glass element ( 1 ) according to one of claims 1 to 3, characterized in that the long afterglow element ( 10 ) over part of the (visible) surface of the glass element ( 1 ). Glass element ( 1 ) according to one of claims 1 to 5, characterized in that the long persistence element ( 10 ) is graphically designed. Glass element ( 1 ) according to one of claims 1 to 6, characterized in that the glass element ( 1 ) is designed such that the visual appearance is the same as the window elements ( 2 ) of the building ( 3 ). Glass element ( 1 ) according to one of claims 1 to 7, characterized in that the matrix ( 12 ) of the long persistence element ( 10 ) inorganic glass frits. Glass element ( 1 ) according to one of claims 1 to 8, characterized in that the matrix ( 12 ) of the long persistence element ( 10 ) consists of largely transparent polymeric substance, in particular of a two-component transparent finish system as it is used in the automotive industry according to the prior art. Glass element ( 1 ) according to any one of claims 1 to 9, characterized in that the long persistence pigment ( 11 ) is a rare earth-doped aluminate and / or silicate and the like, or a zinc sulphidic afterglow luminophore, or mixtures of several long persistence pigments of different excitation rates, different Decay speed and different emission color can be used. Glass element ( 1 ) according to one of claims 1 to 10, characterized in that the long persistence element ( 10 ) is applied graphically by screen printing or transfer method directly to the glass back and is designed such that a plurality of layers are arranged one above the other and / or side by side and thereby translucent and / or translucent and / or color-converting and / or coloring and / or reflective and / or luminescent and / or absorbent elements and / or elements with persistence pigments ( 11 ) with different long persistence emission ( 7 ) and afterglow color are used. Glass element ( 1 ) according to one of claims 1 to 11, characterized in that the long persistence pigment ( 11 ) is excited by an irradiation between 200 and 450 nm and has an afterglow duration greater than 5 hours or greater than 10 hours and in particular greater than 20 hours up to the luminance of 0.3 mcd / m ² and an emission in the visible wavelength range. Glass element ( 1 ) according to one of claims 1 to 12, characterized in that the afterglow pigment ( 11 ) of nanoscale inorganic pigments or agglomerates or aggregates in the submicrometer range to a few micrometers pigment dimensions or crystalline pigments of 1 to 100 micrometers, in particular from 5 to 30 micrometers is formed. Method for producing a glass element ( 1 ) with long afterglow effect on the basis of a single-pane glass with at least one long persistence element ( 10 ) with inorganic photoluminescent pigments ( 11 ) in a matrix ( 12 ) as a facade element of a building ( 3 ) according to one of claims 1 to 13. Application of a glass element ( 1 ) with long afterglow effect on the basis of a single-pane glass with at least one long persistence element ( 10 ) with inorganic photoluminescent pigments ( 11 ) in a matrix ( 12 ) according to one of claims 1 to 13 as part of a facade of a building ( 3 ).