DE102004039883B3 - Transparent element comprises primary and secondary transparent plates, and an intermediate electrical consumer - Google Patents

Abstract

A transparent element comprises a primary transparent plate (1), a secondary transparent plate (3) and an electrical consumer (4). The consumer is located between the two transparent plates and is a light diode. The plates consist of insulating glass and are held together by a frame.

Description

The The invention relates to a transparent element comprising at least one first transparent and a second transparent pane and at least having an electrical load and a method for Exchange of a consumer for such an item.

In addition to windows, there are a variety of other applications for elements, especially transparent elements, such as large-scale glass fronts of buildings, shop windows, building roof elements, doors, stairs, partitions, showcases, furniture, railings, cladding such as tunnel cladding, wall and ceiling panels, and a artificial sky. From the EP 0 900 971 A1 It is known to attach light-emitting diodes to a glass plate, which are supplied with power via thin and transparent conductor tracks.

The EP 0 593 940 A1 describes a laminated glass with an embedded wire, which is contacted from the edge of the disk ago, with a plug contact on the glass surface is arranged.

The US 5,105,303 shows a composite disc with an electrochromatic intermediate layer and the US 4,100,398 shows a composite disk with an embedded in the intermediate layer electric heater.

The US 5,533,289 describes a sandwiched between two discs electroluminescent element.

According to the JP 07-220181A (Patent Abstracts of Japan) and JP 2000-112409A (Patent Abstracts of Japan) become a transparent cover as well as a base plate that is detachable is arranged, provided between which an electric Consumers can be arranged.

The JP 06-151969 A refers to two transparent disks and one electrical load, the second disc as a cover plate is formed and the cover plate at least parts of the electrical Consumer covered and a hole for receiving the electric Consumer is provided.

Further US 2002/0159246 A1 describes a method wherein an element from a first transparent and a second disc and a Consumers are educated and can be solved by each other while the consumer from the disk having the transparent layer removed and can be exchanged for a new consumer.

Finally, refers the disclosure of WO 2004/009349 A1 is based on a laminated glass pane comprising two glass sheets, a plastic sheet and one or more LEDs placed between the glass plates, mounted on a circuit board, laminated present.

As a rule, in the case of an element, in particular a transparent element which consists, for example, of two glass panes with a consumer, for example a light-emitting diode, the consumer, for example the light-emitting diode, is applied to a carrier substrate. A further, generally transparent substrate is arranged above the carrier substrate so that the lighting means are protected between the carrier substrate and the further transparent substrate. Such a transparent element is for example from the DE 100 19 888 A1 known.

A disadvantage of a component according to the DE 100 19 888 A1 a consumer, in particular a lamp between two particular transparent glass is embedded, is that the embedded in such a network consumers, such as light emitting diodes, which fail after an operating time and can lose functionality, can not be changed without the transparent element destroy, ie in the case of failure of only one LED, the entire component is unusable.

task the invention is to overcome the disadvantages of the prior art, In particular, a transparent element should be provided where consumers, in particular light-emitting diodes, can be changed.

According to the invention Task by the features of independent claims 1, 14 and 19 solved. According to the teaching of claim 1 is provided: a transparent Element having at least a first transparent pane, one second transparent pane, an electrical consumer, wherein the Consumers in a room between the first and the second transparent disc is formed, is arranged and the first and second transparent disc releasably connected together are, where the consumer is a light emitting diode. This makes it possible that the first and the second disc of the element after assembly to an element can be detached from each other again, so that the between first and second transparent disc lying consumer, in particular LEDs, accessible again are and can be exchanged.

The Consumers, in particular light-emitting diodes claim a certain Room volume, since they have a certain size. This volume of space the luminous body, For example, the light-emitting diode is called the space between the substrates to disposal posed.

Under a space between the first and second substrate is thus in this Registration of the room understood that at least the volume of the room LED (LED) corresponds.

The Volume of the LED occupies substantially with the Space between the substrates match, if the LED z. B. in a casting resin is embedded between the two substrates.

is the LED is embedded in a hole, so is usually the room greater than the volume of the LED.

In In a first embodiment of the invention, the element can be used as a composite, For example, as insulating glass composite, for example with a circumferential frame seal, be built. The frame seal is preferred made of aluminium. Such a circumferential frame seal can be for example, with a knife system solve. In this way the first transparent pane can be lifted off the second pane and consumers, especially the light emitting diodes, between are arranged first and second disc are accessible. A defective consumer can then, for example, from the first transparent disc on which it is arranged to be removed, for example, by being unsoldered becomes. After the consumer of the transparent disc, on he is disposed of it can be replaced with a new consumer.

Of the Insulating glass composite can be designed both with or without a protective gas filling.

alternative to an insulating glass composite with a circumferential frame gasket it is also possible that the transparent element of first transparent disc and second transparent disc represents a so-called single compound, in which, for example, with the aid of spacer elements, the first transparent disc from the second transparent disc at a distance is held. The simple composite, for example, by a Clamping frame system are held together. If the clamp frame system is opened, then let the first transparent disc and the second transparent Just unplug the disc. By loosening The brackets of the brace frame system may be the transparent element open so that a defective consumer, for example an LED can be replaced.

alternative to the described transparent elements with frame systems it is also possible that first transparent pane with the second transparent pane with a bonding material, for example by casting resin or a film or a thermoplastic material or wax too connect.

is the connecting material cast resin, For example, a very high temperature is greater than 200 ° C required, around the casting resin to melt. At these temperatures, however, the light-emitting diodes destroyed, so that a release of the composite by melting is practically impossible. Such a composite is therefore referred to in this application as a "solid composite".

Becomes but a thermoplastic material or wax as a bonding material is related between the first and second transparent element, so is it is possible at temperatures lower than, for example, 100 ° C, melt the bonding material. At these temperatures, the bulbs suffer no damage. Therefore, the transparent member consisting of a first transparent disc and a second transparent disc with a thermoplastic material or wax in the sense of this application are solved and the consumer or the LED is exposed, so that to change defective elements. Such a composite is in the context of this application thus a "detachable composite".

In an alternative embodiment the invention it is also possible that two discs, namely the first transparent pane and the second transparent pane on the Edge are pierced and, for example by means of screws directly be connected to each other. At the edge of the first and second disc a gasket can be inserted. The seal also serves as Spacer element.

Around the consumers or the light-emitting diodes between the first and the second transparent disc can, if the distance between the first and second disc is not sufficient provided be that one of the transparent substrates provided with so-called blind holes is that the consumers absorb. By such an embodiment can the height the entire component can be significantly reduced.

Next the solution the task of the invention with the help of two solvable in the context of this application interconnected substrates is it also possible to connect the two disks firmly together, for example by means of a casting resin. In the case of a solid composite, one of the two discs, with wells be provided. In the production of the composite consumers become or LEDs are inserted in the corresponding holes.

The Consumers are then free in the production of the composite and can be changed at any time. To the consumers or light-emitting diodes to protect, Is it possible, subsequently to the production of the composite, the holes with a potting compound to provide. If the consumer or the LED is changed, so the potting compound is removed and the consumer renewed and subsequently resealed. This procedure is not part of the invention.

In an embodiment The invention provides that one of the two discs a Has perforation. The LED then becomes, for example integrated in a water-clear plastic stopper and put together with the plug into the bore, for example the second disc, pressed. The first disc has an electrically conductive layer on, so by pressing the plastic plug into the Drill this layer into an electrically conductive connection with the consumer, here the light emitting diode (LED), brought.

The Invention will be described below with reference to the drawings become.

It demonstrate:

1a - 1c Embodiments of the invention comprising a first disc and a second disc, wherein the first disc is releasably connected to the second disc.

2 Transparent disc with a conductive layer according to the prior art.

3a - 3d Process for structuring the conductive layer according to the prior art.

4 Embodiment of the invention with a first disc, a composite material between the first and second disc, wherein the consumer is arranged in the composite material.

5 Embodiment of the invention with a first disc and a second disc and a consumer, which is arranged in a blind hole of the cover disc.

6 Embodiment of the invention, wherein the light-emitting diode is integrated in a plug which is inserted into a bore of a transparent disc.

As in the 1a - 1c As shown, the transparent element according to the invention consists at least of a first transparent substrate 1 , which is formed here as a disc and a second transparent substrate, which also as a disc 3 is trained. The first transparent pane 1 is with the second transparent disc 3 releasably connected. For example, the embodiment according to FIG 1a a so-called laminated glass element, which is a peripheral frame element 5 includes. In the space between the first and second transparent substrate, the electrical load, here the light-emitting diodes, arranged.

Under Transparent in this application is understood that the substrate or the disc has a transmission of more than 70% in the visible Wavelength range has. Intransparent is understood in this application, that the substrate or the disc has a transmission of less than 50% in the visible wavelength range has.

The frame element 5 can be solved for example by means of a knife and so the first transparent disc 1 from the second transparent pane 3 be separated. The arranged in the space consumers or bulbs are then freely accessible and can be exchanged.

1b shows a simple composite, in which the first transparent pane 1 from the second transparent pane 3 by means of a connecting means, for example a screw 10 , are detachably connected.

1c shows a similar structure as 1b However, here are the first and second transparent disc by means of a seal 7 kept at a distance. The composite is made by a clip frame 9 held together. Be the brackets of the clip frame 9 solved, so can the two transparent discs 1 . 3 be separated from each other. The consumers or light-emitting diodes are then freely accessible again for replacement.

In 2 For example, a prior art transparent panel to which a conductive layer is applied is shown. For example, this is the first disc, which may also be referred to as a carrier substrate. The conductive layer is structured such that on the transparent disk, for example, a circular conductor track 103 with connecting conductor 105 . 107 is trained. On the circular track 103 are individual connection points 109 arranged. The connection points 109 serve to the individual consumers, in particular bulbs, such as the light-emitting diodes 104 conductive to connect with a conductor track and thus the power supply of the LEDs 104 sure. The transparent pane is preferably a soda-lime glass.

In the 3a to 3d is a process flow for structuring a transparent pane according to the prior art, which can be used for example in a transparent element according to the invention use shown. First, the transparent disc 1 coated with a conductive layer over the entire surface, for example in the sol-gel process.

Subsequently, according to 3b structuring, for example by means of a laser, which locally heats the coating and evaporates it. Preferably, the slices which are patterned by means of a laser comprise a conductive layer which has a high absorption in the region of the laser wavelength of the laser used and a material which is transmissive at this wavelength. In such a system, the glass layer has only minor injuries. In particular, the cracking in such systems can be largely avoided.

The characteristics of the individual regions of the substrate are in 3b with the reference numbers 11.1 - 11.3 designated. According to the structuring according to 3b subsequently be in the fields 13.1 - 13.4 individual connection points, so-called connection pads 19 according to 3a applied. The connection pads 19 comprise a conductive paste or lacquer, for example silver-conductive lacquer or silver paste, and is applied to the conductive substrate by means of screen printing or stencil printing and then baked. By baking, at the same time, pretensioning of the transparent substrate, in particular of the transparent glass substrate, can take place. As a result, a high mechanical strength is achieved in a single process step.

After applying the contacts in the different areas 13.1 - 13.4 can these be as in 3d can be equipped with a standard method, for example, by solder paste on the connection pads 19 , For example, by means of stencil printing applied. The light-emitting diodes (LEDs) 4 are then applied to the disk, whereby a chip bonder can be used, which the light-emitting diodes 4 attached to the glass before the soldering process. After attaching the individual LED's is the disc 1 with the light-emitting diodes mounted on it through a reflow oven or through a wave solder bath.

In an embodiment The invention will disc as a glass substrate, typically a soda-lime glass coated with a fluorine-doped tin oxide.

The application of the coating takes place as follows:
A soda-lime glass as a transparent substrate is heated to 500 ° C. The glass is then sprayed with monobutyltin chloride and hydrofluoric acid in ethanol, the spray solution following

Composition comprising: monobutyltin chloride 70% ethanol <30% hydrofluoric acid 0.4%

To the spraying For example, the soda-lime glass comprises a transparent, fluorine-doped tin oxide layer.

The Coating is then separated with a laser. With help a doctor blade is silkscreened by screen printing, z. Cerdec SP 1248 applied. The Cerdec 1248 paste is added in a continuous oven 140 ° C for 2 min dried and then by a tempering plant at about 700 ° C for a lime Soda glass baked and tempered. Subsequently, will commercial solder paste applied by stencil printing and equipped with LEDs, for example NSCW 100 LEDs from the company Nichia. The following reflow will be for 2 min the stocked Substrate at 120 ° C preheated and then for 5 sec heated to 235 ° C. After that is cooled slowly.

• – InO_x : Sn
• – SnO_x : F
• – SnO_x : Sb
• – ZnO_x : Ga
• – ZnO_x : B
• – ZnO_x : F
• – ZnO_x : Al
• – Ag/TiO_x

Laser-structurable, electrically conductive layers are, for example:

• - InO _x: Sn
• - SnO _x: F
• - SnO _x : Sb
• - ZnO _x: Ga
• - Zno _x : B
• - ZnO _x : F
• - ZnO _x : Al
• - Ag / TiO _x

The laser structuring of such layers is in the DE 100 19 888 A1 the disclosure of which is incorporated in full in the present application.

Instead of the conductive structured layer for supplying the consumers, it is also possible for individual printed conductors made of transparent conductive material to be vapor-deposited on the first transparent substrate to the individual consumers. Such evaporated conductor tracks to individual consumers are in the EP 0 900 971 A1 described. The disclosure of this document is incorporated in full in the present specification.

In the 4 to 6 alternative embodiments of the invention are shown. In 4 an embodiment of the invention is shown, both the first disc 1 which is in a transparent disk, which usually carries the conductive layer, with the second disk 3 , which usually carries no conductive layer and acts as a cover glass, via a connecting material, here a thermoplastic material 20 is firmly connected. The consumer is in the present case a light emitting diode 22 that between first disc 1 and cover disc 3 is arranged.

The thermoplastic material 20 preferably has a melting point <100 ° C. By heating the entire composite can then the cover plate 3 from the disk 1 be lifted off with electrically conductive layer. The LED is then freely accessible and can be replaced if necessary. After the light-emitting diode has been replaced, the compound can be closed again.

5 shows an embodiment of the invention, in which in the second disc, namely the cover glass 3 , a depression, a so-called blind hole 30 is admitted. The light-emitting diode 22 is in the blind hole 30 admitted. In this way, it is possible to significantly reduce the overall height of the transparent element with respect to the previously illustrated embodiments.

Between the cover disk 3 and the carrier disk 1 is again a seal 7 brought in. The first transparent pane 1 and the second transparent disc 3 can detachably with each other, for example, by means of a frame strip or by means of fasteners or brackets as in 1a - 1c shown connected.

In 6 a particularly preferred embodiment of the invention is shown.

Again, a first transparent pane 1 provided with a conductive structured layer. Above the disc provided with the electrically conductive layer 1 is a second transparent layer 3 , which is also referred to as cover glass, provided. The cover glass 3 includes in the field of consumers, in particular the bulbs, holes 50 , In the holes 50 can the bulbs 22 be used. For the sake of easier exchangeability, these bulbs become 22 not on the transparent substrate 1 attached, but only electrically conductive connected, for example by using a plug 52 which in turn is formed of a transparent material, the light-emitting diode 22 is pressed onto the electrically conductive layer of the first disc. By pressing the LED 22 an electrically conductive connection is made on the electrically conductive layer. The LED can then be replaced very easily, namely, in which the plug is removed. In particular, it is not necessary, the light emitting diode 22 because it is not attached to the disk provided with the electrically conductive layer, for example, to be soldered.

Also it is in such an embodiment not necessary that the first and second transparent substrate solvable connected to each other.

The embodiment according to 6 has the particular advantage of quick replacement of the LED light emitting diode.

Claims (22)

Transparent element with at least one first transparent pane ( 1 ), a second transparent pane ( 3 ), an electrical consumer ( 104 . 22 . 4 ), characterized in that the consumer ( 104 . 22 . 4 ) in a space between the first and the second transparent pane ( 1 . 3 ) is arranged, and the first and second transparent disc ( 1 . 3 ) are releasably connected to each other, wherein the consumer a light emitting diode ( 104 . 22 . 4 ). Element according to claim 1, characterized in that at least one disc ( 1 . 3 ) a transparent, preferably electrically conductive and power transmitting layer for supplying the electrical load ( 104 . 22 . 4 ) having. Element according to one of claims 1 or 2, characterized in that the transparent element comprises a first and a second disc ( 1 . 3 ) and the first and second discs ( 1 . 3 ) form an insulating glass composite. Element according to claim 3, characterized in that the insulating glass composite a detachable frame seal ( 7 ) having. Element according to claim 1, characterized in that the element comprises a first and a second disc ( 1 . 3 ) and the first and second discs ( 1 . 3 ) form a single compound. Element according to claim 5, characterized in that the first and second discs ( 1 . 3 ) of the simple composite by a clip frame system ( 9 ) are releasably connected together. Element according to one of claims 1 or 2, characterized in that the element comprises a first and a second disc ( 1 . 3 ) and the first and second discs ( 1 . 3 ) are releasably connected to a composite material. Element according to claim 7, characterized that the composite material is a casting resin or a film. Element according to claim 8, characterized in that the first disc ( 1 ) the electrical consumers ( 104 . 22 . 4 ) and the second disc ( 3 ) is designed as a cover disk and the cover disk holes ( 50 ) having. Element according to claim 7, characterized that the composite material is a thermoplastic material or a Wax is. Element according to one of claims 1 or 2, characterized in that the element comprises a first and a second disc ( 1 . 3 ) and the first disc ( 1 ) has the transparent, preferably electrically conductive and power-transmitting layer and the second disc ( 3 ) is formed as a cover plate and the first disc ( 1 ) and the cover plate are detachably connected to each other with connecting means. Element according to claim 11, characterized in that at the edge between the first disc ( 1 ) and cover disc a sealing element ( 7 ) is inserted. Element according to one of claims 11 or 12, characterized in that the cover disc blind holes ( 30 ) having. Transparent element with at least one first transparent pane ( 1 ); a second transparent pane ( 3 ); an electrical consumer ( 104 . 22 . 4 ), characterized in that the first disc ( 1 ) has a transparent, preferably electrically conductive and power transmitting layer; the second disc ( 3 ) is formed as a cover plate and the cover plate at least one bore ( 50 ) for receiving the electrical consumers ( 104 . 22 . 4 ) having; and the electrical consumer ( 104 . 22 . 4 ) in a transparent stopper ( 52 ) is integrated into the bore ( 50 ) is inserted, wherein the transparent plug ( 52 ) the bore ( 50 ) and the electrical consumer ( 104 . 22 . 4 ) presses on the electrically conductive and power transmitting layer and the transparent plug ( 52 ) is designed such that it is used to exchange the electrical load ( 104 . 22 . 4 ) back out of the hole ( 50 ) is removable. Element according to one of claims 1 to 14, characterized that the electrically conductive, power-transmitting layer has a transparent, electrically conductive laser-structurable layer. Element according to claim 15, characterized in that the transparent, includes electrically conductive laser-layer of one or more of the following metal oxides: - InO _x: Sn - SnO _x: F - SnO _x: Sb - ZnO _x: Ga - ZnO _x: B - ZnO _x : F - ZnO _x : Al - Ag / TiO _x Element according to one of claims 1 to i 5, characterized that the transparent, electrically conductive layer has a vapor deposition layer is. Element according to Claim 17, characterized in that the transparent, electrically conductive layer has a multiplicity of vapor-deposited conductor tracks ( 103 ). Procedure for exchanging at least one consumer ( 104 . 22 . 4 ) of a transparent element with at least one first transparent pane ( 1 ) and a second transparent pane ( 3 ) and a consumer ( 104 . 22 . 4 ), characterized by providing a transparent element with at least one first transparent pane ( 1 ), a second transparent pane ( 3 ) and an electrical consumer ( 104 . 22 . 4 ), wherein the first and second disc ( 1 . 3 ), which form the element, are detached from each other and the consumer cher ( 104 . 22 . 4 ) from the disc ( 1 . 3 ), which is a transparent, preferably electrically conductive and power-transmitting layer for supplying the electrical consumer ( 104 . 22 . 4 ) and removed against a new consumer ( 104 . 22 . 4 ) is exchanged. A method according to claim 19, characterized in that an insulating glass composite of a first and a second disc ( 1 . 3 ) with a frame gasket ( 7 ) is formed and in a first step, the frame seal ( 7 ) is solved, so that first and second disc ( 1 . 3 ) are separated. Procedure for exchanging at least one consumer ( 104 . 22 . 4 ) of a transparent element according to claim 19, characterized in that a single composite of a first and a second disc ( 1 . 3 ) with a bracket frame system ( 9 ) and in a first step, the single frame composite clip frame system ( 9 ) is solved, so that first and second disc ( 1 . 3 ) are separated. Procedure for exchanging at least one consumer ( 104 . 22 . 4 ) of a transparent element according to claim 19, characterized in that the transparent element comprises a first and a second disc ( 1 . 3 ) and a composite material and that the transparent element is heated to a temperature at which the composite material of the first and second disc ( 1 . 3 ) melts and so the composite of first and second disc ( 1 . 3 ) is solved.