WO2007023083A1

WO2007023083A1 - Phosphorescent glass illumination assembly and method for producing the same

Info

Publication number: WO2007023083A1
Application number: PCT/EP2006/065143
Authority: WO
Inventors: Matthias Rothkegel
Original assignee: GLASWERKSTÄTTE & LEUCHTENMANUFAKTUR ROTHKEGEL e.K.
Priority date: 2005-08-25
Filing date: 2006-08-08
Publication date: 2007-03-01

Abstract

The invention relates to a glass assembly comprising a phosphorescent, luminescent substance and two outer cover glass parts (2, 3), which are indirectly or directly connected, between which the luminescent substance (6, 10) is sandwiched.

Description

Phosphorescent luminous glass arrangement and method for its

manufacturing

The invention relates to a glass arrangement with phosphorescent or nachleuchtendem phosphor and a method for producing this glass arrangement.

There is a widespread need to be able to illuminate glass objects regardless of active power sources or energy supplies. In DE 199 26 980 A1 glass objects are correspondingly proposed for the formation of phosphorescent security markings, in which on a carrier glass a long luminescent or phosphorescent

Layer and then an interference filter are applied. This should be at a constant occupancy with phosphor luminance and thus the

Perceptibility be increased. Aspects of abrasion resistance and mechanical

Protection of the phosphor or the interference filter are not addressed.

However, on page 3, from line 19, there are numerous indications of expediency

Trading available phosphors given. A long-lasting phosphor is also described in DE 698 00 477 T2.

According to DE 696 11 756 T2, a phosphorescent layer and a color layer are arranged in the stated order on a visible light-transmissive substrate layer (glass). The phosphorescent layer comprises binder and phosphor. The color layer comprises binders and colorants. So z. B. easily pass through the color layer in the phosphorescent layer and thereby trigger accumulation of light energy in the phosphor of the phosphorescent. Conversely, phosphorescence emitted by the phosphorescent layer can easily emerge brightly through the color layer. In this case, the color variability should be increased at high luminance.

From DE 38 09 937 A1 a building material with coloring properties is known, which is a melted in glass pigment with phosphorescent Substance or a mixture of phosphorescent substances. This is to create a building material with improved coloring properties, which is insensitive to external influences.

DE 699 04 390 T2 discloses a phosphorescent oxide glass in which the phosphorescent phosphor is added in the course of production directly into the melt of the glass. As a result, after the melting of the phosphor within the glass is protected from external influences.

In WO 02/062 903 a luminescent glass ceramic is described, which should be characterized by improved abrasion resistance. For this purpose, a coating agent for glass surfaces is proposed, which is characterized by doped zinc sulfide as a pigment in ceramic stoving. This should give a luminescent order, which should be particularly resistant to abrasion due to its enamel character.

The invention has the object of further improving the protection of the phosphor from external mechanical damage and / or weathering influences in afterglow or phosphorescent glass structures. To solve the specified in claim 1 glass arrangement and proposed in the claims 18 and 20 alternative manufacturing method proposed. Further optional embodiments of the invention will become apparent from the dependent claims.

According to this, a basic idea of the invention is to enclose phosphorescent "luminescent color" (phosphor) within two or even more glass pieces, in particular in the form of a pane, whereby the luminous layer is ultimately protected on all sides from external mechanical influences by two cover glass bodies. The advantage that can be achieved with the invention is that the optionally colored phosphor can be applied within the cover glass pieces in or outside or otherwise according to lines or contours, which are predetermined by images, patterns, characters or other information symbols especially an artistic color and shape design Afterglow feature accessible.

It is within the scope of the invention to include phosphorescent, in particular colored phosphor not only between two outer cover glass pieces, but also between more than two pieces of glass, for example by fusing the glass pieces. The result is a structure that is characterized by two outer cover glass pieces and one or more interposed intermediate glass pieces. The phosphor is located between a cover glass piece and an intermediate glass piece and / or between two or more intermediate glass pieces.

In terms of a simplified and economical storage, it is expedient if cover and Zwischenglasstücke are identical or at least made similar. It then offers the production in increased quantities, which naturally reduces the production cost per piece.

Alternatively, or in addition to glass pieces, the phosphor can be included by lamination between the two cover glass pieces: For example, PVB or other laminate films or other bonding material layers between the two cover glass pieces are arranged, the phosphor both between two pieces of glass and between a piece of glass and a glass Binding material layer as well as between two binder material layers may be. During lamination, therefore, additional intermediate glass pieces can be inserted between the two cover glass layers in addition to the binder material layers, if it is expedient for requirements, for example, for increased strength or for color or light effects. By lamination, for example by means of PVB (polyvinyl butyral) films or other laminate films, a connection of the cover and, if appropriate, intermediate glass pieces can be brought about by gluing. Alternatively or additionally, the cover and, if appropriate, intermediate glass pieces can be joined together by fusing. In any case, depending on the application requirement, the phosphor can be applied distributed on the laminate films or the like and / or the cover or intermediate glass pieces, also according to a color and / or shape design. Another alternative could be that the pieces of glass are interconnected by spacers, the phosphor being on one or both sides of two directly opposite ones Glass pieces may be applied. Thus, the structure according to the invention realized with spacers can be made into an insulating glass, for example, if dried air is sealed off from the outside environment between the two glass pieces.

In the context of the invention, a production methodology is as follows: In a order of the phosphor directly on a piece of glass this phosphor coated with glass piece can then be covered with another piece of glass. These two glass pieces are then heated to a temperature above the melting point of the glass so that the glass pieces fuse together in the areas where they are not separated by a full-surface layer of the phosphor. The resulting glass arrangement can then be easily and variously further processed. The luminescent material is permanently and safely sealed off from air and the weather by melting the two glass pieces together. Also by mechanical loads such. B. scratches, the phosphor can not be affected. However, since the phosphor hampers the fusion of the glass pieces in areas where it has been applied over the entire area and densely, depending on the density or thickness of the phosphor layer, further modified methods for producing full-surface or homogeneous luminous glass pieces are suitable. Thus, on the one hand, the phosphor can be applied to the glass piece over the entire surface, but just in such a low or reduced density, that the glass pieces are not prevented from melting over the entire surface due to the luminescent pigments applied in this way. However, it is to be expected with a much lower overall luminance of the glass assembly. It is therefore advisable to increase the total luminance achievable by using a plurality of glass pieces and a plurality of phosphor layers, each arranged between the glass pieces, with a lower individual luminance. Alternatively, even in a first layer between the glass pieces of the phosphor can be applied only in partial areas, such. B. in a kind of checkerboard pattern, and in the next layer or layers again such that the remaining free in the first layer portions can now be irradiated by the one or more layers with light. Thus, the glass pieces, of which at least three are necessary in this embodiment, in the intervals or free areas between the individual phosphor areas merge together and thus achieve sufficient for the stability of the glass assembly and the durability of the phosphor adhesive bond and simultaneously produce a full-surface luminous glass composite. For design and / or technical (eg static) reasons significantly more than three glass pieces can be used.

According to a further variant of the method, the glass panes or glass body are not directly fused together, but indirectly connected by means of laminate films, PVB (polyvinyl butyral) films or other binder material layers. In this case, to obtain the luminous effect, the phosphor is applied to either a glass piece or the laminate sheet, for example, the laminate sheet is sandwiched between two glass pieces so that the phosphor layer is sandwiched between the laminate sheet and a glass sheet, and then for the laminate sheet required temperature (usually around the 14O ⁰ C) laminated in a conventional manner. An advantage of this embodiment is that the surface of the glass sheets or pieces per se is not changed by this lamination process, in particular is not melted. At the same time, this lamination between two coverslip pieces can continue to achieve a long service life which is significantly higher than that of uncovered or sealed-protected phosphor layers on a glass surface. Even when using the laminate film there is the problem that an adhesive bond with full-surface, dense or "too thick" order of phosphor on the films is not guaranteed if the phosphor is between the film and the glass Therefore, the luminescent material is applied to two or more foils in a correspondingly lower density or thickness, and then placed one above the other between the glass pieces so that, on the one hand, during the lamination process a sufficient adhesion between the films or the films and the glass pieces is achieved and on the other hand the desired overall luminosity can be ensured by adding the luminance of the individual layers or layers between the films or films and glass pieces ativ or additionally offers itself in the procedure with the Laminate films the ability to on a film or glass surface only a portion, eg. B. in the checkerboard pattern to print thick with phosphor and to arrange a correspondingly offset checkerboard pattern on a surface of another piece of glass or a laminate film, so that the optical superimposition of these two checkerboard pattern is supplemented again to a full-coverage light-emitting. This variant can be used particularly advantageously in the laminate film technology, since two border crossings "glass film" already exist through the laminate film between the glass pieces, ie such an arrangement can already be realized with a laminate film and two glass pieces, also in this embodiment of a glass pane according to the invention or a glass body but it may be necessary for technical and / or design reasons, to use more than two glass panes or pieces.

To produce special optical effects, glass assemblies according to the invention can advantageously be combined with phosphor with a frame in which bulbs are installed. So it is possible that in the

Glass arrangement by means of phosphor according to the invention an image motif is integrated, which is supplemented with a further, located behind the glass image motif, for example on a suitable, preferably capable of directing light information carrier to a total motif. Now, if the bulbs are switched on or activated in the frame, which is located behind the glass assembly image motif through the

Illuminant illuminates, so that the phosphor in the glass before the subject does not appear as a separate light radiation, but as an associated part of the subject behind the glass assembly. When the bulbs are switched off, the motif darkens behind the glass arrangement, while the motif parts in the glass arrangement darken with

Fluorescent material are realized, despite the switched off bulbs light up. To this

Way, surprising visual effects in the game with light and can be

Realize dark.

Further details, features, (sub) feature combinations,

Effects and advantages on the basis of the invention will become apparent from the following description of preferred embodiments of the invention and from the drawings. These show in: 1 shows a glass arrangement according to the invention in plan view,

Figure 2 is a sectional view of the glass arrangement according to line M-II in

FIG. 1,

Figure 2a is a corresponding cross-sectional view of a modified

embodiment,

FIG. 3 shows another embodiment of the glass arrangement according to the invention in plan view,

Figure 4 is a sectional view of the glass arrangement according to line IV-IV in

FIG. 3,

Figure 4a is a corresponding cross-sectional view of a modified

Execution of the glass arrangement,

FIG. 5 shows a partially cutaway view of the narrow side of a glass arrangement according to the invention in combination with a switched off light-emitting frame,

FIG. 6 shows, in the same narrow side view, the glass arrangement with the illuminated frame switched on,

Figure 7 is a plan view of the broad side of the invention

Glass arrangement from FIG. 5 with the light frame switched off,

Figure 8 is a plan view of the broad side of the glass assembly of Figure 6 with the light-emitting frame.

According to Figure 1 and 2, the glass arrangement 1 according to the invention with two outer cover glass pieces 2, 3, for example glass panes, is formed. In the example shown, these are arranged congruent to each other and executed. According to FIG. 2, between the two outer cover glass pieces 2, 3 also congruent inserted intermediate glass pieces 4, so that there is a sandwich-like structure. The border crossings, where the glass pieces 2, 3, 4 abut each other with their broad sides, form in the cross-sectional view of Figure 2 superimposed layers 5, in each of which a plurality of individual phosphor regions 6 arranged at intervals 7 from each other and by melting the glass pieces 2, 3, 4 are included in the resulting glass composite. The phosphor regions 6 of different layers 5 are arranged offset in position directions relative to one another according to a specific pattern. The dislocation pattern is selected such that each phosphor region can radiate light through one of the two outer cover glass pieces 2, 3 unhindered from another phosphor region. In other words, each phosphor region of a particular layer is positioned to pass through gaps 7 between phosphor regions 6 of other layers 5 or to illuminate sections of other layers 5 that are free of phosphorus. This results in the plan view according to FIG. 1 the effect that all strip-shaped phosphor regions 6 are immediately visible in the afterglow through the glass pieces, without any hindrance from further phosphor areas.

The embodiment according to Figure 2a differs from that of Figure 2 in that instead of the intermediate glass pieces 4 laminate films or other

Binding material layers 8, in particular with PVB, are inserted inside a sandwich structure. For clarity, the laminate films 8 are drawn in greatly exaggerated thickness in Figure 2a. Naturally, their material hardness is substantially lower than that of the cover glass pieces 2, 3, so that the latter push the phosphor regions 6 into the laminate film material via their respective inner sides, as indicated in FIG. 2 a.

The embodiments according to Figure 2 and 2a have in common that - to achieve the highest possible Nachleuchtstärke - the respective thickness of the phosphor regions 6 is dimensioned so strong that they connect within their respective base area at melting temperatures of 800 ° C or laminating temperatures Prevent 140 ° C between the glass pieces 2, 3, 4 or between the cover glass pieces 2, 3 and the laminate or PVB films 8. Outside its base, the connection is possible by melting or laminating. Though 1, the individual phosphor strips in plan view have individual plan view spacings 9 from one another, which according to FIG. 2 correspond to the respective offset of a phosphor region of a first layer relative to a phosphor region of a second, closest layer 5. Due to the conical, divergent light emission, however, a homogeneous to completely closed luminous surface in the plan view according to FIG.

The embodiments of Figure 3, 4 and 4a differ from those of Figure 1, 2 and 2a in the following: Instead of individual phosphor areas, each layer 5 has a substantially homogeneous, full-surface phosphor layer 10, which are arranged congruent to each other. The middle or innermost

Luminescent layer 10a radiates in the afterglow on the two outer

Phosphor layers 10b from. As a result, there is a superposition of the light emissions of the congruent phosphor layers 10a, 10b, so that the phosphor intensities of individual phosphor layers can add up. In the

Overall view then results for the viewer an enhanced and homogeneous

Light surface in the plan view of Figure 3. However, as a comparison with

FIGS. 4 and 4a with FIGS. 2 and 2a show that the phosphor layers 10a, 10b are made relatively thin or weak, so that their (reduced) thicknesses make the connection of the

Glass pieces 2, 3, 4 according to Figure 4 at a melting temperature of 800 ° C or

Laminate sheets 8 with the cover glass pieces 2, 3 at a lamination temperature of

Do not prevent 140 ° C.

According to Figures 5 and 6, the glass assembly 1 according to the invention structurally integrated into a light-emitting frame 11 to the outside through an opening 12 visible. Between the glass arrangement 1 and the rear wall 13 of the light-emitting frame 11, a light-conducting luminous body 14 is arranged, which is provided with image motives (see below for FIG. 8) and can thus serve as a luminous information carrier. At its two ends, it is each coupled to a light source 15, which are turned off and inactive according to Figure 5 and turned on in accordance with Figure 6 and emit light to the lamp. In the latter case, light beams 16 emanating from the luminous body 14, which penetrate the glass arrangement 1. In this case, an inventively inventively fused in the glass phosphor layer 10 is applied, which can accumulate energy for afterglow. The afterglow also persists after the light sources 15 according to FIG. 5 have been switched off, whereby afterglow rays 17 extend starting from the glass arrangement 1.

In Figures 7 and 8, the alternating image effect is illustrated, which can be achieved with the inventive combination of the glass arrangement 1 with the light-emitting frame 11. According to FIG. 7, the phosphor 10 is distributed in a distributed manner between contours 18 and lines 19 between the glass pieces or disks 2, 3, 4 so that the image motif visible in FIG. 7 is displayed on afterglow. When the light sources 15 according to FIG. 6 are switched on, for the viewer who sees the glass arrangement 1 through the opening 12, further contours 20, which are applied to the above-described luminous element 14, are still visible in addition to the phosphor contours and lines 18, 19. The information contained therein is transported by the conduction and emission of light from the light sources 15 via the light beams 16 to the outside. On switching off the light sources 15 according to FIG. 5, by contrast, only the afterglow beams 17 of the luminous substance contours and lines 18, 19 remain for a certain time.

LIST OF REFERENCE NUMBERS

1 glass arrangement

2, 3 outer cover glass pieces

4 intermediate glass pieces

5 location

6 phosphor areas

7 distances, gaps

8 laminate films

9 top view distance

10, 10a, b phosphor layer

11 light frames

12 opening

13 rear wall

14 lights

15 light sources Light rays Noctilucent rays Contour line further light contours

Claims

claims

1. Glass arrangement (1) with phosphorescent phosphor (6,10), characterized by two directly or indirectly connected outer cover glass pieces (2,3), between which the phosphor (6,10) is located.

2. Arrangement (1) according to claims 1, characterized in that between the cover glass pieces (2,3) one or more intermediate glass pieces (4) and / or laminate or other binder material layers (8), for example polyvinyl butyral (PVB) films arranged are, wherein the phosphor (6,10) between on the one hand one of the cover glass pieces (2,3) and on the other hand a

Intermediate glass piece (4) or a binder material layer (8) or between two intermediate glass pieces (4) or two bonding material layers (8) one or more times and / or one or more pieces.

3. Arrangement (1) according to claim 1 or 2, characterized in that the cover and optionally the intermediate glass pieces (2,3,4) with each other via the

Bond material layers (8) are glued or otherwise connected.

4. Arrangement (1) according to one of the preceding claims, characterized in that the cover and optionally the intermediate glass pieces (2,3,4) fused together or fixed by spacers to each other, wherein in the case of the spacers of the phosphor (6,10 ) is arranged on one or more of the cover and / or intermediate glass pieces (2,3,4).

5. Arrangement (1) according to one of the preceding claims, characterized in that the cover and optionally the intermediate glass pieces (2,3,4) are designed flat disc-shaped and opposite with their broad sides, where between the phosphor (6,10) located.

6. Arrangement (1) according to one of the preceding claims, characterized in that the phosphor (6,10) on the inside of the cover glass pieces (2,3) and / or optionally on one side of the or the intermediate glass pieces (4) and / or binder material layers (8) is arranged or applied.

7. Arrangement (1) according to one of the preceding claims, characterized in that the phosphor (10) inside or outside or otherwise according to lines or contours (18,19) is arranged, which are predetermined by pictures, patterns, characters or other information symbols ,

8. Arrangement (1) according to one of the preceding claims, characterized in that the phosphor (6) within a plurality of spaced-apart regions (6) is arranged.

9. Arrangement (1) according to one of the preceding claims, with one or more intermediate glass pieces (4) and / or with one or more binder material layers (8) between the cover glass pieces (2,3), characterized in that the phosphor in individual areas ( 6) or layers (10a, 10b) which are distributed over a plurality of layers (5) extending along the boundary junctions between the cover glass pieces (2, 3) and the intermediate glass piece (4) and / or the bonding material layer (s) (8), wherein phosphor regions (6) of different layers (5) are contoured and / or arranged so complementary relative to one another that the phosphor regions (6) can be seen or viewed on or through one of the cover glass pieces (2, 3) ) together to form a luminous pattern and / or an at least substantially closed and / or uniform luminous surface of predetermined luminous intensity and luminance.

10. Arrangement (1) according to claim 9, characterized in that the phosphor regions (6) are spaced from each other and / or in different positions (5) along the border crossings are positioned offset from each other in such a way that in the top or see through or through one of the cover glass pieces (2,3) all the light-emitting regions (6) are visible and / or congruent with one or more phosphor gaps (7) or with phosphor (6) free sections are arranged.

11. Arrangement (1) according to claim 10, characterized in that the thickness of the phosphor regions (6) is at least partially dimensioned such that in the respective phosphor region (6) a connection between glass pieces (2,3,4) and / or binder material layers ( 8) is prevented.

12. Arrangement (1) according to claim 9, characterized in that the phosphor regions or layers (6, 10) in different layers (5) are arranged congruent to one another in such a way that in the top view or through one of the cover glass pieces ( 2.3) has a substantially homogeneous luminous surface of predetermined luminosity and

Luminance is visible.

13. Arrangement (1) according to claim 12, characterized in that the thickness of the phosphor regions or layers (10) is at least partially dimensioned such that in the respective phosphor region a connection between glass pieces (2, 3, 4) and / or binder material layers ( 8) is enabled.

14. Arrangement (1) according to one of the preceding claims, characterized by an on and auschaltbare light (14) and / or light source (15) arranged for backlighting or transillumination of the cover or intermediate glass pieces (2,3,4) is.

15. Arrangement (1) according to claim 14, characterized in that the lamp (14) and / or light source (15) is designed as a carrier for images, patterns, characters or other information symbols.

16. Arrangement (1) according to claim 14 or 15, characterized in that the connected cover glass pieces (2,3) a light-emitting frame (11) with the one or more switchable on and off lights (14) and / or light sources (15). assigned.

17. Arrangement (1) according to one of the preceding claims, characterized by one or more colored cover and / or intermediate glass pieces (2,3,4).

18. Arrangement (1) according to one of the preceding claims, characterized by a coupling of the phosphor (6,10) with solar cells.

19. A method for producing the glass arrangement (1) according to one of the preceding claims, characterized by the following steps:

a) applying the phosphor (6, 10) to one side of a first glass piece (2, 3), the side being completely or partially covered by the phosphor (6, 10) becomes,

b) covering the side of the piece of glass completely or partially covered with phosphor (6, 10) with a second piece of glass (2, 3),

c) fusing the glass pieces (2, 3) above / next to each other by heating to a temperature close to the melting point of the glass such that the phosphor (6, 10) is trapped therebetween.

20. The method according to claim 19, characterized in that the before

Merging steps a) and b) with third, fourth, etc. glass pieces (4) as long as are repeated until a desired number of

Fluorescent layers (5) is reached, each between two pieces of glass

(2,3,4).

21. A method for producing a glass arrangement (1) according to one of the preceding claims, characterized by the following steps:

a) as a first step, applying phosphor (6, 10) to one side of a first glass piece (2, 3, 4) or to two sides of a laminate film (8), the respective side being partially or completely covered with the phosphor,

b) covering with phosphor (6, 10) completely or partially covered side of the first piece of glass (2, 3, 4) with a side of the phosphor (6, 10) free

Laminate film (8) or covering the side of the laminate film (8) covered with phosphor (6, 10) with the first glass piece (2, 3, 4)

c) applying phosphor (6, 10) on a phosphor-free side of the laminate film (8) or on one side of a second glass piece (2, 3, 4), the respective side being partially or completely covered with the phosphor,

d) covering with the phosphor (6,10) completely or partially covered side of the second glass piece (2,3,4) with a phosphor-free side of the laminate film (8) or covering the phosphor (6,10) covered side the laminate film (8) with the second glass piece (6, 10),

wherein the order of steps b) to d) is arbitrary,

e) as a final step, melting the laminate film (8) with the applied glass pieces (2, 3, 4) by raising the temperature to the melting temperature of the laminate film.

22. The method according to claim 21, characterized in that the steps b), c) and d) with third, fourth, etc. glass pieces (2,3,4) or second, third, etc. laminate films (8) are repeated as appropriate, to a desired number of phosphor layers (10) or layers (5), each in a boundary or transition region between two laminate films (8) or a

Laminate (8) and a glass piece (2,3,4) are reached, and in step e) the plurality of laminate sheets (8) are detected by the fusion.

23. The method according to any one of the preceding claims, characterized by the use of glass caskets, broken glass or glass powder to form the glass pieces (2,3,4).

24. The method according to any one of the preceding claims, characterized in that the phosphor (6,10) by means of screen printing, brush, sprinkling or spraying on the glass body (2,3,4) or on the laminate film (8) is applied.

25. insulating glass with two or more spaced-held glass sheets, characterized in that one or both glass sheets is each realized with a glass arrangement (1) according to one of the preceding claims or a manufacturing method according to one of the preceding claims.