Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B32—LAYERED PRODUCTS
  • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
  • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
  • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
  • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
  • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
  • B32B17/10009—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the number, the constitution or treatment of glass sheets
  • B32B17/10018—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the number, the constitution or treatment of glass sheets comprising only one glass sheet
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B32—LAYERED PRODUCTS
  • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
  • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
  • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
  • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
  • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
  • B32B17/10009—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the number, the constitution or treatment of glass sheets
  • B32B17/10036—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the number, the constitution or treatment of glass sheets comprising two outer glass sheets
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B32—LAYERED PRODUCTS
  • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
  • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
  • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
  • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
  • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
  • B32B17/10165—Functional features of the laminated safety glass or glazing
  • B32B17/10376—Laminated safety glass or glazing containing metal wires
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B32—LAYERED PRODUCTS
  • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
  • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
  • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
  • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
  • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
  • B32B17/10165—Functional features of the laminated safety glass or glazing
  • B32B17/10541—Functional features of the laminated safety glass or glazing comprising a light source or a light guide
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B32—LAYERED PRODUCTS
  • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
  • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
  • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
  • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
  • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
  • B32B17/1055—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the resin layer, i.e. interlayer
  • B32B17/10761—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the resin layer, i.e. interlayer containing vinyl acetal

Definitions

• Glazing comprising electroluminescent elements.
• the present invention relates to glazing comprising electroluminescent elements.
• the object of the invention is to provide glazings comprising series of light-emitting diodes in a manner that is relatively more convenient to produce and well adapted to powers that are compatible with those required in particular for lighting or decoration.
• the glazing is composed of at least one sheet of rigid mineral or organic glass and at least one sheet of a thermoplastic material bonded to the rigid sheet.
• the light-emitting diodes are incorporated in the sheet of thermoplastic material and are fed by means of conductive metal wires also incorporated in the sheet of thermoplastic material.
• a first way of incorporating the supply wires and the diodes in the thermoplastic material is to operate by calendering.
• An alternative embodiment is to attach the wires to the surface of the thermoplastic material under the influence of ultrasonic radiation, after which the diodes are glued or soldered to the wires. It is known to produce automotive windows in which conductor son are incorporated to form a heating network. These provisions are used in particular to defrost or defog the windshields of certain vehicles. This solution is chosen to replace the use of thin heating layers which present difficulties of realization in particular on large glazings for which at thicknesses compatible with a sufficient light transmission, offer a resistance too important to lead to a power adapted to the voltages usually used.
• the wires have a diameter that does not exceed 300 ⁇ and preferably not 200 ⁇ .
• the son feeding the diodes have a diameter of the order of 20 to 100 ⁇ .
• the diodes can be connected together in the assembly with the glazing in serial mode or in parallel mode. According to a particular embodiment of the invention, the diodes can be assembled to the glazing according to a connection in series mode and in parallel mode within the same glazing. It is also possible to make at least one group of diodes connected in series mode with at least one group of diodes connected in parallel mode. Multiple combinations of multiple groups are possible in both modes.
• FIG. 1 shows in schematic form, a typical glazing structure according to the invention
• FIG. 2 is a diagram recalling an embodiment of the incorporation of wires carrying diodes in a thermoplastic sheet
• FIG. 3a illustrates a mode of preparation of supply wires supporting a series of diodes
• FIG. 3b illustrates a mode of preparation of the supply wires supporting diodes connected in parallel
• FIG. 4 shows schematically in section an embodiment of a glazing according to the invention
• FIG. 5 is similar to Figure 4 and shows another embodiment of a glazing according to the invention.
• Figure 1 shows a glazed view "exploded" to illustrate the relative layout of the various components involved in the composition of the glazing.
• This in the presented mode comprises two rigid transparent sheets (1, 2) of mineral or organic glass. These leaves in the glazing are joined by means of a thermoplastic interlayer sheet 3, in the usual manner for the constitution of laminated glazing.
• the materials traditionally usable for this purpose can be used according to the invention. These include polyacetal resins including polyvinyl butyral resins (PVB). It is also polyvinyl chloride (PVC) or polyvinyl acetate (EVA) ...
• the interlayer sheets (3) joining the two rigid sheets (1, 2) are also perfectly transparent.
• the glass sheets are either clear or colored.
• the interlayer (3) can also be colored.
• the glazing is intended to form a lighting slab and the diodes form the lighting means.
• the diodes (5) each of limited power are distributed over the surface of the slab.
• the diodes can be uniformly distributed over the surface or a part of the surface of the glazing, they can also reproduce a defined pattern according to their relative positions with respect to each other. Depending on the type of light or the use made of it, in addition to the location of the diodes, it is also advantageous to choose their respective power. For ambient lighting it is preferred to use a large number of well-distributed diodes, these diodes can then individually have a limited light output. For more localized lighting, possibly punctual, or with a limited number of diodes, the diodes advantageously offer significantly higher powers.
• the diodes (5) are assembled in groups aligned along supply wires (4). These supply son are themselves connected to conductors 6 located on both sides of the glazing. These conductors (“bus bar”) are conventionally made either by wires, ribbons, braids or even enameled conductive strips. In the latter case they are located on the glass sheet (1) and not as shown on the insert (3).
• the contact between the son (4) and the conductors (6) is obtained in the usual manner by means of conductive glue, solder or by simple contact the son (4) coming under pressure because of the assembly of the sheets.
• Figure 4 shows in section the arrangement of the various elements involved in the constitution of the glazing after assembly.
• the diodes (5) whose thickness is chosen so that it does not exceed that of the interlayer sheet (3) are included in the thermoplastic material of this sheet. Due to its plasticity the material at the time of assembly conforms to conform to the outline of the diodes.
• the diodes of small dimensions are well enveloped by the material of the interlayer.
• FIG. 4 shows a series of 5 diodes powered by the same wire 4.
• the diodes When, as in FIG. 1, several series of diodes are arranged close to each other, it would be possible to place diodes astride two adjacent son, ie the diodes would then be mounted in parallel.
• the advantage of the series structure is that the usual diodes have individual characteristics which can differ substantially from one to the other, either from the beginning or during their lifetime. Under these conditions, the risk is to discern different luminosities from one to the other. Although this eventuality is not incompatible with the lighting function, it is preferable for aesthetic reasons that each diode in the set has a substantially identical appearance when in operation. The series arrangement therefore ensures that the diodes are traversed by an equal intensity along the same wire, and consequently develop a substantially equal brightness.
• the realization of the son carrying the diodes can be done according to two different process diagrams.
• the first consists in the prior incorporation of the diodes in the interlayer sheet.
• the diodes are advantageously fixed on the lead (4) as shown in Figure 3a.
• the fixing is obtained in a traditional manner for example by means of conductive glue or welding on the lugs (10) of the diodes. It is ordinarily easier to fix on a continuous wire as shown in FIG. 3, than to constitute a chain of diodes from successive sections of conducting wires. Of course by proceeding in this way, it is necessary later to break the wire as shown in (11) in Figure 4, between the two lugs (10) of each diode. The rupture of the wire can intervene from the beginning on the wire to which the diodes are fixed beforehand but before incorporation in the interlayer sheet. It is also possible to cut (11) after placing the wire and diodes in the interlayer sheet.
• the first cutting mode has a certain convenience for the breaking of the wire and avoids subsequent contacts likely to accidentally bypass a diode.
• an intermediate sheet is wound on a drum (7) optionally the conductors (6) are previously arranged on the interlayer sheet.
• the wires (4) carrying the diodes (5) are reeled under tension from a coil (8).
• a calender roll (9) with the drum (7) is also advantageously used to press the wires and diodes into the thermoplastic material of the interlayer.
• the intermediate sheets (3) are assembled with the rigid sheets in the traditional way, in particular by steaming under pressure.
• the temperatures during this assembly finish the coating of the diodes in the thermoplastic material at the same time that ensure the bonding of the sheets together.
• Another process diagram for the implementation of the son and diodes, not shown, consists of the application of these son and diodes on an intermediate sheet according to the desired arrangement, the fixing being carried out punctually along these son, for example by local fusion of the interlayer.
• the wires placed in position and held by these interleaved welding points can then be directly subjected to the sheet assembly operation, in which assembly the pressure and the temperature lead to incorporation into the interlayer sheet.
• Figure 4 shows an assembled glazing comprising an interlayer sheet (3).
• the thicknesses of the interleaving sheets currently available are less than 1 mm.
• the PVB sheets for example are marketed at 0.38 and 0.76mm. To ensure that they are well wrapped in the interlayer material, the thickness thereof must be obviously at least equal, and preferably a little higher.
• the diodes are subject to constraints which should not create any risk of deterioration. For this it is preferable to ensure that the thickness of the sheet or intermediate sheets used, is greater than that of the diodes, with a thickening judiciously chosen. This margin of thickness avoids the crushing of the diodes between rigid sheets during assembly.
• the nature of the assembly technique also leads to more or less constraining pressures. Depending on the size of the form and the type of glazing, it is possible to proceed by calendering, in compression envelopes under vacuum ...
• the assembly can be conducted with one or more sheets of thermoplastic material.
• glazing according to the invention are composed of two rigid sheets (1, 2), it is also possible to proceed to an assembly of a rigid sheet with one or more sheets of a flexible material. It is known to produce in this way what is commonly referred to as "bilayer" glazing.
• the flexible material is, for example, a polyurethane, a material which, while being flexible, may have good scratch resistance or a "self-healing" character.
• FIG. 5 schematizes in section a material of this nature which comprises, for example in addition to the rigid sheet, a sheet of a material traditionally used to constitute laminates, in particular a sheet of PVB (3), which sheet is protected from scratching on the opposite side to that of the rigid sheet (1) by a "harder” protective sheet (12).
• the latter is advantageously made of a polymer and has a thickness sufficiently small to conform to the curvature of the rigid sheet which imposes the general shape.
• This structure also has the advantage of having a lower total weight of the structure.
• Sheets (3) and (12) are commercially available in pre-assembled form. This is the case, for example, of products sold by Dupont under the trademark "Sentry ® ". It is obviously possible to assemble from several separate sheets. In all cases the incorporation of the son and diodes is conducted as indicated above.

Landscapes

• Laminated Bodies (AREA)
• Electroluminescent Light Sources (AREA)
• Joining Of Glass To Other Materials (AREA)

Priority Applications (1)

Applications Claiming Priority (3)

Publications (1)

Family

ID=38791984

Family Applications (2)

Family Applications Before (1)

Country Status (4)

Families Citing this family (6)

Family Cites Families (8)

• 2007
  • 2007-07-24 EP EP07113018A patent/EP2025509A1/de not_active Withdrawn
• 2008
  • 2008-07-24 EA EA201000228A patent/EA201000228A1/ru unknown
  • 2008-07-24 EP EP08786372A patent/EP2170600A1/de not_active Withdrawn
  • 2008-07-24 WO PCT/EP2008/059680 patent/WO2009013327A1/fr active Application Filing
  • 2008-07-24 CN CN200880105632A patent/CN101795861A/zh active Pending

Non-Patent Citations (1)

Also Published As

Similar Documents

Legal Events