Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
  • B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
  • B60Q1/26—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic
  • B60Q1/2661—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic mounted on parts having other functions
  • B60Q1/268—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic mounted on parts having other functions on windscreens or windows
• • 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
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
  • B60Q3/00—Arrangement of lighting devices for vehicle interiors; Lighting devices specially adapted for vehicle interiors
  • B60Q3/20—Arrangement of lighting devices for vehicle interiors; Lighting devices specially adapted for vehicle interiors for lighting specific fittings of passenger or driving compartments; mounted on specific fittings of passenger or driving compartments
  • B60Q3/208—Sun roofs; Windows
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F21—LIGHTING
  • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
  • F21V33/00—Structural combinations of lighting devices with other articles, not otherwise provided for
  • F21V33/006—General building constructions or finishing work for buildings, e.g. roofs, gutters, stairs or floors; Garden equipment; Sunshades or parasols
• • 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
  • B32B2367/00—Polyesters, e.g. PET, i.e. polyethylene terephthalate
• • H—ELECTRICITY
  • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
  • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
  • H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
  • H05B2203/014—Heaters using resistive wires or cables not provided for in H05B3/54
• • H—ELECTRICITY
  • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
  • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
  • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
  • H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
  • H05K2201/10007—Types of components
  • H05K2201/10106—Light emitting diode [LED]

Definitions

• the present invention relates to automotive glazing and particularly glazing roofs and those arranged on tailgates or rear window.
• the present invention more specifically relates to the incorporation of electroluminescent elements in such glazings.
• light-emitting diodes in automotive glazings has been presented previously for a variety of uses. It is in particular to arrange these diodes for displaying information on the behavior of the vehicle, and in this case the diodes are arranged in the glazing constituting the windshield. It is also the constitution of lighting means located in particular in the pavilion.
• 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 the internal illumination of the vehicle;
• 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.
• the main implementations envisaged locate the light-emitting diodes in windows or part of glazing that are not directly in the visual field. This is particularly the case of roof glazing. This is also the case of the rear glasses. For the latter also the presence of fine son raises all the less objection that users are accustomed to networks son enamelled screen-printed enamels, son that have dimensions much greater than the diameters of conductive wire son envisaged according to the invention.
• the presence of the wires is also noticeable to a small extent insofar as, apart from the fact that they are not in the usual field of vision, the glazings constituting these roofs normally offer a reduced light transmission, the order of 30% or less to prevent the inconveniences related in particular to sunshine. In these transmission conditions, the contrast of the wires is less sensitive.
• 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 ⁇ . While it is advantageous to use the finest possible threads to minimize the gene or unattractiveness associated with their presence, it is still preferable to ensure that these threads offer a mechanical tensile strength sufficient to withstand the forces imposed in the preferred embodiments described below.
• FIG. 1 shows in schematic form, a typical glazing structure according to the invention
• FIG. 2 is a diagram reminding an embodiment of the incorporation of son carrying diodes in a thermoplastic sheet.
• FIG. 3 illustrates a mode of preparation of supply wires supporting a series of diodes;
• 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 sheets 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. Particularly when the glazing constitutes the roof or part of the roof of a vehicle, it is usual to use colored sheets having a limited light transmission, and especially a transmission energy as limited as possible In the latter case it is usually glass products with strong color especially because of the presence of a relatively high iron concentration.
• the interlayer (3) can also be colored.
• the glazing is intended to be a roof and the diodes form the lighting means of the passenger compartment.
• the diodes (5) each of limited power are assembled in the ceiling position.
• This provision which makes in the traditional modes of incandescent lamps the light source is more or less punctual, can of course be changed to the extent that the diodes are not necessarily collected on a small space. It may be preferred to distribute these light sources that constitute the diodes, in particular so as to cover a significant portion of the glazing surface. Such an arrangement is particularly sought to have a less glare lighting, or even possibly less as lighting to create a softer light atmosphere. In these distributions 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.
• each diode used advantageously produces a luminous flux that is not greater than 3 lumens, and preferably not greater than 1 lumen.
• the diodes advantageously offer significantly higher powers. For example, diodes developing from 5 to 25 lumens and preferably from 10 to 20 lumens are used.
• 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 drivers (“bus bar”) are traditionally constituted either by wires, ribbons, braids or even enamelled 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 contour of the diodes without leaving pockets or air bubbles.
• the diodes of small dimensions are well enveloped by the material of the interlayer.
• FIG. 4 shows a series of 5 diodes fed by the same wire 4.
• diodes When, as in FIG. 1, several series of diodes are arranged close to one another, it would be possible to place diodes astride two adjacent wires, in other words the diodes would then be connected in parallel. Such a provision is however not preferred.
• the usual diodes have individual characteristics that 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. For this reason the serial arrangement is preferred.
• each diode is associated this time in parallel with a similar diode.
• the power developed by each diode is not greater than half the nominal power that it offers.
• the embodiment of the son carrying the diodes is advantageously conducted prior to incorporation into the intermediate sheet.
• the diodes are advantageously fixed on the conductor wire (4) as shown in FIG. 3.
• the fastening is obtained conventionally, for example by means of conductive glue or solder on the tabs (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.
• 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.
• son and diodes Another embodiment 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 merger of tab.
• 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.
• FIG. 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.
• the diodes used are advantageously of a thickness of less than 0.5 mm. 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 interleaves used is at least 20% greater than that of the diodes. 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 dimensions the shapes and the type of glazing, it it is possible to proceed by calendering, in compression envelopes under vacuum ...
• the pressures exerted during calendering are those which are most likely to develop excessive local stresses for the integrity of the diodes. In this case it is practically necessary to have interlayer sheets having a thickness greater than that of the diodes. In the techniques using vacuum envelopes to compress the assembled sheets, the efforts are better distributed the thickness of the interlayer sheets may be closer to that of the diodes.
• the assembly can be conducted with one or more sheets of thermoplastic material.
• two intermediate sheets (mode not shown) it is preferable to arrange the son and diodes between the two sheets in question. In this way the enveloping of the diodes is particularly well ensured.
• 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 poly-urethane material which while flexible may have good scratch resistance or a character “self-healing".
• 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 curve of the rigid sheet which imposes the general form.
• Sheets (3) and (12) are commercially available in pre-assembled form. This is the case, for example, of products marketed by Dupont under the name "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.

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• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Architecture (AREA)
• Civil Engineering (AREA)
• Structural Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Joining Of Glass To Other Materials (AREA)
• Laminated Bodies (AREA)
• Glass Compositions (AREA)

Priority Applications (1)

Applications Claiming Priority (3)

Publications (1)

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ID=36581541

Family Applications (1)

Country Status (3)

Cited By (3)

Families Citing this family (17)

Family Cites Families (9)

• 2007
  • 2007-01-23 EP EP07704091A patent/EP1979160A1/de not_active Withdrawn
  • 2007-01-23 WO PCT/EP2007/050657 patent/WO2007085599A1/fr active Application Filing
  • 2007-01-23 EA EA200801737A patent/EA012744B1/ru not_active IP Right Cessation

Non-Patent Citations (2)

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