WO2012028813A1

WO2012028813A1 - Illuminating multiple glazing including light-emitting diodes

Info

Publication number: WO2012028813A1
Application number: PCT/FR2011/051979
Authority: WO
Inventors: Aude Montgermont; Jingwei Zhang; David Delhorme
Original assignee: Saint-Gobain Glass France
Priority date: 2010-09-01
Filing date: 2011-08-30
Publication date: 2012-03-08
Also published as: CN203547414U; TWI557306B; TW201229377A; FR2964138B1; FR2964138A1

Abstract

The present invention relates to illuminating multiple glazing including light-emitting diodes and comprising: a first sheet of glass (1), a second sheet of glass (1'), and a first group of light-emitting diodes (2, 2a, 2b) for direct lighting via the first glass sheet (1) in a first illuminating strip (40) with first diffusing means. The beam emitted by each diode of the first group is divergent and defined by a mid-height half-angle α of at least 30°. The distance H1 between the diodes and the first diffusing means is at least 5 mm. The glazing comprises a first diode profile (3) including a first base (30) bearing diodes (2, 2a, 2b) and a first elongate lateral flange (31) that is at an angle to the first face so as to receive first rays, known as lateral rays (R1), from the first group of diodes at angles greater than or equal to the mid-height half-angle α and to return said rays onto the first diffusing means. The multiple glazing further comprises a first dark zone (60) associated with the first sheet of glass, said first dark zone being adjacent to the first illuminating strip (40) and offset from the surface of the first glass sheet opposite the front face of the first base (30).

Description

LED LIGHT EMITTING MULTILIGHTENING GLAZING

The present invention relates to an illuminating multiple glazing and more particularly to a multiple glazing illuminating light emitting diodes.

Light-emitting diodes (LEDs) were originally used to provide warning lamps or indicator lights for electrical and electronic devices, and have already been used for a few years to illuminate signaling devices such as traffic lights. signaling of motor vehicles (turn signals, position lights), or portable lights or markers.

Recently their use has grown to replace halogen incandescent bulbs. The interest of LEDs is their long life making the equipment employing them more durable, and requiring reduced maintenance.

The document WO2008 / 026170 proposes an insulating double glazing for interior lighting of buildings comprising, in the embodiment in connection with FIG.

a first glazing unit with first and second main faces, the second face being on the interior side of the building (internal face),

a second glazing unit with a main face opposite the first face, said third face, and another main face, said fourth face which is the face of the exterior side of the building (external face),

an internal space filled with a thermally insulating air space,

- Diodes arranged on the inner face of the first glazing for lighting via the first glazing, while heat is dissipated in the opposite direction by the air knife.

The Applicant has found that this insulating glazing with light-emitting diodes is not optimized in terms of optical performance.

The invention therefore aims to provide a multiple glazing (including insulating) illuminating both efficiently, homogeneously and soft, and preferably a glazing compatible with industrial requirements (ease and speed of production, reliability, ... ).

The invention even proposes to widen the range of possible applications of light emitting diode glazing.

For this purpose, the present invention firstly proposes a multiple light-emitting diode-based glazing unit comprising:

a first glazing, in particular a plane, preferably in mineral glass or even in organic glass, with first and second main faces, a second glazing, in particular a plane, preferably made of mineral glass or even of organic glass, with a main face facing the first face, called the third face, and another opposite main face, called the fourth face,

the first and second glazings being secured by means of a peripheral connection, sealed or not depending on requirements, and spaced apart by an internal space between the first and third faces, a height space H (essentially) under vacuum or filled with a blade of gas, such as rare gas (s) or air, and possibly including spacer (s),

at least one first group of light-emitting diodes, each of the diodes having a given emission spectrum in the visible range, each of the diodes being arranged in the internal space and facing the first face for direct illumination via the first glazing in a first illuminating zone, each of the diodes having a main emission radius, said first main ray given, going directly to the first face without encountering reflection (s) in the internal space,

In addition :

the first illuminating zone is elongated, forming an illuminating strip of given width with first and second longitudinal edges and comprising means for diffusing the light emitted by the diodes associated with the first glazing and facing the diodes, said first diffusing means, means preferably on the first face or in the first glazing,

the beam of each diode of the first emitted group is divergent and defined by a half-angle at mid-height of at least 30 ° (well known angle defined from the radius F1, of angle at 0 °), the first main ray F1 going on the first diffusing means, preferably the first main ray F1 being substantially normal to the first face, the adjacent diode bundles of the first group overlapping on the surface of the first diffusing means, and the distance H1 between the diodes and the first diffusing means (for example the third face) being at least 5 mm, or even 10 mm and preferably less than 40 mm,

the glazing further comprises a first diode section, in one or more rooms, extending in the internal space and comprising:

a first elongated base, in particular of substantially flat or even curved strip type, in particular of rectangular or square cross section, in particular of width less than the width of the illuminating strip, or even of the first diffusing means, base with a main face known as before facing the first diffusing means and carrying, directly or indirectly, diodes, in particular front face of the first parallel base or substantially parallel to the first face (or the average plane of the first glazing) a first elongated lateral wing forming an optical concentrator, preferably joined to the first base, in particular of rectangular or square cross section, preferably closer to the first face than the first base, first wing deviating from the base towards the first face and oblique with respect to the first face to receive first so-called lateral rays of the first group of diodes from angles greater than or equal to the half-angle at mid-height a and return them on the first diffusing means in a "central" zone next to the first base -voire in a no zone (peripheral) further removed from the first wing than this zone (central) - or return (by reflection) in an area of the first glazing next to the first wing preferably with the first diffusing means.

The multiple glazing also includes a first dark zone, associated (via the main faces) to the first glazing unit, the first dark zone being adjacent to the first illuminating strip and offset from the surface of the first glazing facing the front face of the first base zone (dark) not illuminated by the first group of diodes (and possibly not illuminated by other diodes or by any other type of artificial light).

Thus, preferably, the beam does not reach the glazing area corresponding to the first dark area by the first side wing, thus partitioning the light.

The diodes are positioned on the first reflector to form a continuous illuminating strip in the length direction. The "intra-group" distance between adjacent diodes of the first group may preferably be the same for all the diodes to simplify beam overlap.

In the present invention, the term "light-emitting diode" (or shortened diode) means a quasi-point source, usually inorganic, typically based on semiconductor chip, a source distinct from an OLED (organic diode) providing an illuminating surface extended. The first scattering means create an illuminating area with both an extended, homogeneous and smooth surface and not a set of light spots formed by each diode beam separated by dark or faint areas.

The first diffusing means in particular prevent glare particularly intense for people in front of the first glazing. These diffusing means modify the light transmission of the first glazing, making it weaker. The rays are therefore transmitted in smaller quantities to the right of the diodes thus effectively reducing the glare of an individual observing the glazing.

A distance diodes (for example chips) - diffusing means large enough to facilitate homogeneity is also fixed.

The beam is divergent to avoid forming points (focal spots) brighter with respect to the diodes than between the diodes. The emitted beam is divergent and the redirected beam is preferably divergent. In addition, the first side wing confers multiple advantages to the glazing:

by the elongated nature of the first wing, it helps to form an elongated illuminating zone, without the need for focusing means,

it restricts the extent of the illuminating strip by folding lateral rays, providing increased luminance and better homogeneity than on a zone of light spread over the entire surface of the diode beam, which is between 0 and 180 ° in the lack of focus,

by restricting the extent of the illuminating strip, it allows the adjacent functional dark zone (more central or peripheral than the strip) to be enlarged, a functional (visible) zone notably distinct from the narrow glazed edge zone, in particular one preserves a (large) dark area that is a transparent area (glass door, window, partition etc.).

The first lateral wing according to the invention can also be used to recycle the backscattered light by the diffusing means and / or reflected on either side of the diodes for example on a support of the diodes (PCB support of the diodes in particular).

The first optical concentrator wing is preferably not a collimator. The first wing may be substantially flat or curved. The first wing is preferably a substantially flat plate including bent or curved at the junction with the first base (which is preferably an extension of the flat plate or curved) or around the first base. Preferably the inner face (side of the diodes) of the first wing has a rectangular outline.

It may be desirable to have multiple diode profiles for multiple illuminating strips, but preferably these bands are spaced sufficiently apart to preserve the extent of the dark area or dark areas.

The first base also confers advantages to the glazing according to the invention. The diodes are not directly connected to connection circuits on the glazing but are attached to the base of the reflector. It is thus possible to perform diode tests on the reflector before integration into the glazing, thereby reducing the scrap rate of multiple glazing. Similarly, if necessary (maintenance, color change, power), it is easy to remove the base of the diode-carrying reflector.

Placed in the internal space, the diodes are further protected from the weather and moisture in particular.

The given half-angle at mid-height may be preferably at least 50 °, preferably at least 60 ° or even at least 70 °.

The emission cone may be symmetrical or asymmetrical with respect to the main ray F1. The emission cone may be, for example, lambertian.

The main radius F1 may be substantially normal to the first face, for example at +/- 5 °. And, in particular, the first carrier base of the diodes, in particular substantially flat, may be parallel or substantially parallel to the first face (or the average plane of the first glazing).

Preferably, the diffusion cone (light diffused by the diffusing means) is symmetrical and along an axis normal to the first face, for example at +/- 5 °.

The design strip (s) light (s) is very flexible.

With several groups of diodes on the same base can be formed several separate illuminating strips.

The diode profile is elongated so longer than wide.

The first base may optionally comprise other groups of diodes to form another illuminating strip, for example in the extension of the first illuminating strip.

In order to form illuminating strips of distinct orientations, notably an illuminating frame or an illuminating cross, it is possible to use a diode profile of suitable shape or a plurality of diode sections spaced apart or contiguous to each other. In order to be as discrete as possible and to maximize the area of the dark area, the first diode section preferably occupies a limited space in the glazing, for example it is of a width just sufficient to fulfill its function as a concentrator.

It is thus possible to arrange the diode profile with the diodes on the glazing without obstructing the latter - preserving most of the view and letting in all the natural light desired, for example for a window or facade of the building. And in case of pluralities of diode profiles, the diode profiles can be narrow and / or widely spaced from each other for this purpose.

The first longitudinal edge (and / or the first wing) of the first illuminating strip (preferably of the first diffusing means) may be straight or curved.

The first illuminating strip may be straight or curved. The first illuminating strip may be annular in particular.

Preferably, if the illuminating strip is peripheral, the first lateral wing is on the side of the first longitudinal edge towards the center of the glazing.

Preferably the "longitudinal" radii of the diodes going in the direction of the length of the illuminating strip (as opposed to the lateral rays along the width of the band) directly meet the first diffusers (without reflections). It is particularly preferred that the diode profile has no "vertical" wall on the carrier length of the diodes, including a diode or diodes of the first group.

If the first wing is short (relatively spaced from the first glazing) then side rays directly meet the first glazing beyond the surface facing the first wing. In this case, it is preferably provided that the first diffusing means are also in this more marginal illuminating zone of the first glazing unit. It is preferred to limit the width of this illuminating marginal zone to less than 10 mm. It is the same for the second wing.

Preferably, the first wing comprises a first limit ray reflection zone typically fixed at its end, with a given limiting angle with respect to the main radius F1, the extent of the first diffusing means (opposite the diodes and in one or more marginal zones) being such that the majority, or even at least 80%, or even 100%, of radii of angle below this limit angle, and towards the first face are diffused by the first diffusing means.

If the first reflection limit zone emitted rays touches the first face, it is of course not necessary to extend the first means diffusing beyond the contact zone. The diodes are for example in the center of the first scattering means.

To reinforce homogeneity, at least 80% of so-called central radii of angles less than or equal to the half-angle at mid-height a go on the first diffusing means:

the width of the first diffusing means being such that the central rays go directly on the first diffusing means,

and / or the extent of the first wing being such that the central rays go on the first diffusing means after reflection on the first wing,

and / or the profile comprises a second elongated lateral wing, opposite the first wing relative to the first base, preferably joined to the first base, and the extension of the second wing being such that the central radii go on the first diffusing means after reflection on the second wing.

To enhance the homogeneity and luminance, the profile may comprise a second elongated lateral wing, opposite the first wing relative to the first base, preferably joined to the first base, forming an optical concentrator in particular of rectangular cross-section. or square, second wing preferably departing from the base in the direction of the first face and preferably oblique with respect to the first face, the second wing being adapted to receive second so-called lateral spokes of the first group of angle diodes greater than or equal to the half-angle at mid-height (a) and to return them (by reflection):

on the first diffusing means in an area opposite the first base,

- or on the first oblique wing (which will return on the first diffusing means),

or in an area of the first glazing facing the second wing, preferably a zone with the first diffusing means.

And possibly the second wing, preferably joined to the first base, spacer shape of the first and second glazing, or is part of said connecting means.

This second wing can be straight because the first wing is oblique. This second wing presents the advantages similar to those already presented for the first wing.

The second lateral wing according to the invention can also be used to recycle the light backscattered by the diffusing means and / or reflected on both sides of the diodes for example on a support of the diodes (PCB support of the diodes in particular). The second optical concentrator wing is preferably not a collimator. The second wing may be substantially flat or curved. The second wing is preferably a plate (metallic, metallized ...) substantially flat, in particular folded or curved at the junction with the first base (which is preferably an extension of the flat plate or even curved) or around the first based.

Preferably the inner face (side of the diodes) of the second wing has a rectangular outline. The second lateral wing may preferably be closer to the first face than the first base.

The first base may carry a plurality of groups of diodes parallel to each other on one or more supports, all the diodes being opposite the first diffusing means.

The "intergroup" distance between a diode of the first group and an adjacent diode of the second group may be adjusted for an overlap of the illuminating beams, to form a continuous continuous wide band and preferably homogeneous (in particular in its width).

Preferably the intragroup and intergroup distances are substantially identical for a good overlap of the illuminating beams, to form a large and long illuminating band continuous and homogeneous (in particular in its width and in its length).

Thus, in a configuration with several rows of diodes, the first base carries a second group of aligned diodes parallel to the first group of diodes also aligned, each of the diodes of the second group having a given emission spectrum in the visible , each of the diodes being arranged in the internal space and facing the first face for direct illumination via the first glazing unit in the first illuminating strip, each of the diodes of the second group having a main emission radius, said second main beam , going directly on the first face without encountering reflection (s), preferably the second main beam F2 being substantially normal to the first face, the beam of each diode of the second emitted group is divergent and defined by a half-angle to half at least 30 °, the second main beam extending over the first diffusing means, the adjacent diode beams of the second e group overlapping on the surface of the first scattering means, the adjacent diode bundles of the first and second group overlapping on the surface of the first diffusing means, the distance H2 between the diodes of the second group and the first diffusing means (for example the third face) being at least 5 mm and less than 40 mm.

The profile further comprises a second elongated lateral wing, opposite the first wing relative to the first base, preferably joined to the first base, forming an optical concentrator in particular of rectangular or square cross section, second wing apart from the base in the direction of the first oblique face with respect to the first face, the second wing being able to receive second so-called lateral radii, of the second group of diodes of angles greater than or equal to the half-angle at mid-height ( a) and to send them back (by reflection):

on the first diffusing means in an area opposite the first base,

- or on the first oblique wing (which will return them on the first diffusing means),

And preferably, for homogeneity, for a given distance L12 between the center of a diode of the first group and the center of an adjacent diode of the second group, a first reference radius of the first group of equal angle is defined. at the half-angle at half-height a such that tana = L12 / H1 and a second reference radius of the second group of angle equal to the half-angle at half-height a such that tana = L12 / H2.

In one embodiment, for an effective lateral ray concentration, the first lateral wing oblique with respect to the first face, (on all or at least the majority of the extent of the first lateral wing), forms a so-called deflection angle, in particular substantially constant (over all or at least over the majority of the extent of the first lateral wing), between 35 and 55 ° including these values with respect to the first face, the first wing being preferably flat (bar-type, parallelepipedic) or curved and inscribed in a mean oblique plane relative to the first face according to said angle of deflection.

More specifically, the first base can be flat or curved,

And preferably the second wing can deviate from the front face of the first base in the direction of the first face and be oblique with respect to the first face, forming an angle of deflection of between 35 and 55 ° including these values relative to the first face, the second wing being preferably flat (of the bar type, parallelepipedic) or curved and inscribed in a middle (main) plane oblique with respect to the first face according to said deflection angle.

In a conception of the invention:

the vertical projection of the (internal) end of the first lateral wing on the first face (at the level of the surface of the first diffusing means) corresponds substantially to the first longitudinal edge of the illuminating strip and even of the first diffusing means,

the vertical projection of the (internal) end of the second lateral wing on the first face (at the level of the surface of the first diffusing means) substantially corresponds to the second longitudinal edge of the illuminating strip and even of the first diffusing means.

In a simple design, the width of the first illuminating strip is substantially equal to the width of the first diffusing means thus avoiding a glare in the direct lighting zones via the first transparent glazing, outside the diffusing zone), and corresponds to the vertical projection. on the first glazing, at the surface of the first diffusing means, the width between the first wing and the second wing.

By the choice of wings, a band-shaped illuminating zone is created with first and second defined longitudinal edges.

Preferably, to simply delimit the illuminating strip and best concentrate the beams on this band, the first wing and / or the second wing may extend to contact the first face or to leave a maximum of one play of less than 5 mm.

In an advantageous design, at least 80% of all the spokes go on the first diffusing means opposite the first base and the lateral wings.

Effective heat dissipation would avoid degrading the efficiency of the diodes, and therefore ensure even better light efficiency and durability of the diodes.

Thus, the first base of the first diode section may be a metal part, in particular aluminum, copper or stainless steel, forming a first thermal conductor.

Advantageously, the diodes of the first group, in particular substantially aligned, are (regularly) distributed over a first elongate common support, the first support being a printed circuit board associated with the first base, in particular a bar.

A printed circuit board (PCB) is in the form of a large plate or a narrow strip. It is made of plastic or is metallic. Most often, a bar is metallic, while the plate is plastic.

The diode support may be of any shape, for example flat, in particular a strip, for example rectilinear of square or rectangular cross section. The support can be opaque because it can be masked by the chosen opaque profile.

The use of such a support with its connection circuits already simplifies the manufacture and maintenance of the glazing and further limits the scrap rate.

The first diode section, particularly monolithic, may comprise several diode supports aligned with each other to form together a continuous and homogeneous illuminated strip or to form separate illuminating strips.

Several groups of diodes may be arranged on separate supports constituted by a plurality of narrow strips, or on a first common support such as an elongated printed circuit board of greater width in particular substantially corresponding to the surface of the base.

The advantage of the plurality of strips with respect to a single PCB plate (supporting several groups or rows of diodes) is to reduce the manufacturing cost by optimizing the area useful for the arrangement of the diodes, to allow a flexible distribution of the groups of diodes and adapt to its design, and finally reduce the cost of maintenance, only the defective bar being replaced.

We have seen that the evacuation of heat avoids degrading the efficiency of the diodes, and therefore guarantees to provide an even better light efficiency and ensures the durability of the diodes.

Also, advantageously, in particular for diodes of medium or high power, the first support can be made integral with a first thermal conductor of the metal type, in particular aluminum, copper or stainless steel, preferably formed at least by the first base of the first diode section, said first support incorporating heat dissipation means and / or being associated with heat dissipation means connected to the first thermal conductor.

The heat dissipation means, integrated and / or associated with the first support of the diodes may be constituted by the material constituting the first support, of the type metal, or by metal surfaces integrated in the first electrical insulating support, and possibly by means of securing the first support to said first thermal conductor, in particular formed by the first base of the first diode section, which are thermally conductive, of the glue or thermally conductive adhesive tape made of an electrical insulating material if the support is electrical insulator.

Preferably the diode support is metallic and the diodes are soldered on tracks which are electrically insulated from the metallic material. The metallic material of the support being thermal conductor, the support can be directly pressed against a thermal conductor to obtain the heat dissipation.

Fixing the support to the base can be made for example by clipping and / or or screwing. We can insert a thermal conductor (type thermal grease, thermal tape and / or thermal glue ...) to obtain even better heat dissipation, and this for better light efficiency and durability of the diodes.

The adhesive tape has the advantage of providing a calibrated thickness, allowing the support to be perfectly flat and to ensure that the diodes are all equidistant from the reflector. In addition, the adhesive tape allows its prior attachment to the support.

An assembly of the diode support via a double-sided adhesive or a curable adhesive (which does not provide immediate fixation) is preferred because it allows relative positioning of the small support on the reflector.

With a support of plastic diodes, the diodes are soldered on heat dissipating surfaces (called "thermal pad" in English) reported on the two opposite sides of the support and through its thickness. Fixing is necessarily performed by an electrically insulating thermal conductive joining material associated with heat dissipation surfaces. The thermal conductive bonding material is for example thermally conductive adhesive or double-sided adhesive tape, already mentioned.

For even better luminous efficiency, the first support may carry a free surface (flat or inclined) around the first group of diodes and diffusing, for example lacquer or paint. For example, a white reflector is used.

According to one characteristic, the diodes may be encapsulated, that is to say comprise a semiconductor chip and an envelope, for example epoxy resin type or PMMA, encapsulating the chip. The functions of this envelope can be multiple: protection of the oxidation and the humidity, conversion of wavelength diffusing element ... The diodes can be embedded in a common protection material (waterproof, dustproof, etc.).

The diode may be for example a semiconductor chip of the order of one hundred μηη or mm; and possibly with a minimal encapsulation for example of protection. It is not necessary to use optics such as lenses directing the light emitted by the diode to the privileged areas.

Preferably, the diodes can thus be simple chips or with a low volume encapsulation of the SMD type ("Surface Mounting Device" in English) or "CHIP on BOARD" rather than the conventional, (first generation) voluminous diodes. low power and luminous efficiency.

The diode may preferably be:

a diode "medium power", that is to say greater than 0.1 W or brightness greater than or equal to 8 lumens,

- A "high power" diode, that is to say greater than or equal to 1 W or brightness greater than or equal to 80 lumens.

The diode may preferably have a luminous efficiency of at least 40 Im / W (lumens / Watt), or even at least 60 Im / W.

The lighting may be particularly illuminating with a total luminous efficiency of at least 40 Im / W. The optical efficiency of the illuminating glazing (ratio between the total efficiency and the efficiency of a diode) may be greater than 70%.

From a dimensional point of view, at least one of the following characteristics can be provided for the diodes:

the diodes are less than 1 cm high or even 5 mm high,

the diodes are of width (diameter) less than 1 cm,

the diodes are identical and regularly spaced from one another with an intra-group distance designating the distance between the axes of the successive diodes, possibly of the same order as the eigenvalues of the diodes,

the diodes of the first group are aligned and regularly spaced from each other with an intra-group distance designating the distance between the axes of the successive diodes, the diodes of a second group are aligned and regularly spaced from each other, parallel to the first group; with an intergroup distance designating the distance between the axes of the diodes close to two groups, for example of the order of the intra-group distance, the number of diodes of the first group is at least equal to 10.

The robustness of the diodes is particularly interesting in intensive uses such as in public transport such trains, planes, buses, pleasure boats.

The group or groups of diodes may be coupled to control means for emitting light either permanently or intermittently, with different intensities, or a given color, or different colors, in particular depending on the amount of natural light.

The first diode section according to the invention may be monolithic, in particular metal, or bimaterial.

The first base and / or the first wing and / or the possible second wing may comprise a substrate (preferably mineral):

- coated with a reflective layer (specular or diffusive reflection) for example,

coated with a shiny metallic layer (specular reflection including a reflection coefficient greater than or equal to 70% or even 80%) or matte (diffusive reflection),

- coated with a diffusing layer (enamel, white lacquer ....),

- textured or rough to be diffusing,

- Which is metal including anodized aluminum.

The first base and / or the first wing and / or the possible second wing may be flat or concave (on the side of the diodes).

The first diode section according to the invention may preferably have a flared L-shaped section (formed by the base and a single first lateral flange) or U flared (formed by the base, a first lateral flange and a second flange lateral).

In a first simple design, the first diode section is a monolithic metal part, in particular anodized aluminum, with one or more folds or curvature (s), including the first base (forming thermal conductor), the first wing and preferably the second wing including a piece of thickness less than or equal to 3 mm or even 1 mm.

In another design, said second light concentrator wing is detached from the first base and is:

a strip-like profile that is rectilinear, in particular metallic or metallized, plane or concave, in particular forming a spacer for the glazings, possibly slanted by relative to the first face forms a so-called deflection angle of between 35 and 55 ° by including these values with respect to the first face or a profile, in particular metallic or metallized, plane or concave, forming part of said connection means delimiting the space internal, optionally oblique with respect to the first face preferably forms a so-called deflection angle of between 35 and 55 ° including these values with respect to the first face

Furthermore, to be discreet, the vertical projection on the first face of the first wing and / or the second wing can be chosen less than or equal to 4 cm, and preferably less than or equal to 2 cm.

The first base can be spaced or pressed against the second glazing.

Optionally the first diode section has a bearing surface or even attachment to the third face.

The first diode section may be integral with the second glazing, or even another element in the internal space, by mechanical fastening type screwing, clipping, or by gluing.

In one embodiment, the first illuminating strip is curved, in particular annular, and the first base and the first wing are also curved.

From a dimensional point of view, at least one of the following features can be provided:

the first illuminating strip (which is preferably the width of the first diffusing means) is of width less than 30% of the area of the first glazing, or even 20% or 10%,

the vertical projection of the width between the first and second lateral wings on the first glazing is of width less than 30% of the area of the first glazing, or even 20% or 10%,

the first illuminating strip is of length at least equal to 5 cm, the first illuminating strip is for example of length substantially equal to the length of the associated lateral or longitudinal edge of the first corner glazing (square, rectangular, etc.),

the length of the first diode section is equal to the length of the first diffusing means,

the length of the first support is substantially equal to the length of the diode profile,

the first support is less than 2 cm thick or even 1 cm thick. The first illuminating strip covers a fraction of the surface (functional, visible) of the first glazing, for example a fairly narrow illuminating strip in the case of a large glazed surface, when a first dark zone, that is to say not illuminated in particular, a central area, has a distinct feature.

The (maximum) width L1 (constant or variable width) of the first illuminating strip may preferably be less than 200 mm or even less than or equal to 100 mm, in particular to leave a large dark area surface.

The first illuminating strip may be peripheral, in particular along a glazing edge and the first more central dark zone, then further from the diodes than the first dark zone.

The first illuminating strip may be in a given area of the glazing, which is for example a central area, and the first dark area may be more peripheral.

The first dark area (single or multiple, uniform or not) can be chosen from:

a zone (semi) transparent of the first glazing preferably facing a transparent zone of the second glazing,

and / or a reflecting zone forming a mirror, by depositing a reflective coating on the first glazing, in particular on the first face, for example a silvering, with preferably the first diffusing means formed by attacking the mirror, for example with regard to a reflecting zone forming a mirror of the second glazing,

and / or a translucent, satin-like zone (preservation of privacy ...), for example by texturing the first glass element, for example facing a translucent zone, a decorative zone of the second glazing,

and / or a decorative zone, by an opaque and / or colored coating or by the first vitreous tinted in the mass, for example facing a translucent zone, a decorative zone of the second glazing.

A reflective surface for providing mirror function may usually be a silver-based layer. The mirror may be the SGG Miralite product from SAINT-GOBAIN GLASS, with an oxidation protection paint, or alternatively based on chromium such as the SGG Mirastar product from Saint-Gobain GLASS.

The glazing may preferably comprise, on the first glazing, in particular on the first or second face, or on an additional glazing unit associated with the second face, said masking means before the end of the first wing or the second wing. wing, chosen from among a reflecting mirror layer, a diffusing zone, in particular a frosted area of the first glazing unit, a decor layer, in particular a colored layer, and preferably in particular of the same type as the first diffusing means, or the selected dark area reflecting mirror, translucent , or decorative.

It suffices, for example, to make a diffusing zone wider than the illuminating zone or a dark mirror, translucent or decorative zone overflowing under the wing or wings.

The multiple glazing according to the invention may comprise between the third face or the fourth face and the first base, in particular forming part of the base and / or on the third or fourth face, masking means of the so-called rear face of the first base, opposite to the front face; even masking of the first and possible second wing, may be selected from a reflective layer forming a mirror, a frosted area of the second glazing, a decor layer, including colored.

The multiple glazing according to the invention may comprise a second illuminating strip facing the first illuminating strip, with second diffusing means associated with the second glazing, in particular of width substantially identical to the first diffusing means and the first diode profile may be movable in particular by rotating about an axis parallel to the first glazing, and in a first position, the first group of diodes can illuminate said first illuminating strip and in a second position the front face of the first base can be opposite the second diffusing means the first group of diodes may illuminate said second illuminating strip and the first wing may form an optical concentrator for the second illuminating strip.

The multiple glazing according to the invention may comprise a second illuminating strip facing the first illuminating strip and being associated with the second glazing, with second diffusing means associated with the second glazing, in particular of width substantially identical to the first diffusing means.

another group of diodes illuminating said second illuminating strip,

a second diode section, in particular similar to the first diode section, with a second base notably contiguous to the so-called rear face of the first base, opposite to the front face, and a lateral wing notably similar to the first lateral wing, forming optical concentrator for the second illuminating strip.

The multiple glazing according to the invention may comprise another first illuminating strip associated with the first glazing unit with other diffusing means including width substantially identical to the first diffusing means, the first preferably joined strips, forming an L, or even a cross, the first base being L, or even cross, and carrying another group of diodes illuminating said other first illuminating strip, the first lateral wing and the second lateral wing are joined to the first base and formed in particular by kinks, cuts and / or by molding, by extrusion.

The first diode section according to the invention thus preferably has a section in the form of 2 U flared and inverted.

The multiple glazing according to the invention may comprise

a second illuminating strip offset from the first illuminating strip and associated with the second glazing, with second diffusing means associated with the second glazing and offset from the first diffusing means;

another group of diodes illuminating said second illuminating strip,

an extension of the first diode section, with another bearing base on a front face of said other group, in particular joined to the first lateral wing, the first lateral wing, having a so-called rear surface opposite the so-called front surface meeting the radii side of the first group of diodes, forming optical concentrator of the so-called lateral light emitted by the other group of diodes,

- Preferably another lateral wing in particular similar to the first lateral wing, opposite the first lateral wing relative to the other base, the other optical concentrator wing of the so-called lateral light emitted by the other group diodes,

and preferably the dark area comprises at least one surface facing the rear face of the other base.

The first glazing may include a reflective layer such as silver covering its first face to form an illuminating mirror except in the first illuminating strip and in any other first adjacent illuminating strips.

It is possible to provide first illuminating strips (associated with the first glazing) and / or second illuminating strips (associated with the second glazing), of identical or distinct widths, and forming identical or differentiated lighting.

In particular, it is possible to design, in particular on the entire surface of the glazings, an alternation of first illuminating strips and second illuminating strips with a single diode profile with bases bearing groups of associated diodes and lateral wings forming an optical concentrator for the first illuminating strips and the second illuminating strips.

Between the first illuminating strips, we can form mirrors in strips. Between the second illuminating strips, mirrors can be formed into strips. It may be for example a partition, a partition element forming illuminating mirror.

The groups of diodes used to form the first lightning band (s) or the second lightning strip (s) associated with a common section or with separate diode sections (diodes oriented towards the same first glazing unit or towards the second glazing unit) can be controlled together or independently.

The first glazing may have a high light transmission in the dark zone (s) of at least 85% or more, while associated with the first diffusing means, it has a light transmission of less than 85% or even less than or equal to 70% and preferably greater than or equal to 20%, or even greater than or equal to 40%.

The blur in the first illuminating strip may preferably be greater than 70% or even greater than or equal to 85% and measured in a conventional manner with a device known as Hazemeter.

The first diffusing means are preferably arranged in the thickness of the glass and / or on the first face, they are thus protected and the second face in contact with the external environment can be smooth and easily cleaned.

The first diffusing means may be more preferably associated with the first face and for example the first diffusing means is formed by surface texturing of the first glass element, in particular sandblasting, acidizing, abrasion or by adding a diffusing element, especially in a layer, preferably by screen printing an enamel or a diffusing layer or formed from a laminated diffusing plastic material with the first glass element.

If the diffusing means are arranged in the thickness of the glass and / or on the internal face (first face and / or third face), they are thus protected and the external face (second face and / or fourth face) in contact with the The external environment can be smooth and easily cleaned.

Acid etching, sandblasting, etching (advantageously by laser) or screen printing may be preferred because providing a delineation of the treated areas easily controllable and reproducible industrially. Acidic glass includes SAINT-GOBAIN GLASS Satinovo® glass and SAINT-GOBAIN GLASS Smoothlite® diffusing glass.

The glazings are preferably of similar or identical dimensions, of the same nature, and of the same shape (rectangular, square, round, etc.) and possibly curved.

The first glazing and / or the second glazing may be clear or even extra-clear mineral glass. For extra-clear glass; reference WO04 / 025334 can be referred to for the composition of an extra-clear glass. In particular, it is possible to choose a silicosodocalcic glass with less than 0.05% Fe III or Fe ₂ O ₃ . Examples include SAINT-GOBAIN Diamant® glass, SAINT-GOBAIN Albarino® glass (textured or smooth), Pilkington OptiWHITE® glass, Schott B270® glass.

In addition, a mineral glass is preferred for the first and second glazings for its multiple advantages:

- The glass having good heat resistance, it may be close to the diodes despite the fact that they constitute hot spots,

- The glass is mechanically resistant so that it has an easy cleaning and is not scratched, which is of particular interest for glazing installed in places imposing strict hygiene,

- glass meets the requirements of fire safety standards.

It may be as an example, depending in particular on the aesthetic rendering or the desired optical effect and / or the destination of the multiple glazing of:

glass of standard composition, such as Planilux® glass from Saint-Gobain Glass, with a slightly green color,

- Extra-clear glass without coloration (neutral) such as Diamant® glass from SAINT-GOBAIN GLASS,

pyramidal printed glass, such as Albarino® glass from the company SAINT-

GOBAIN GLASS, reliefs in the form of pyramids being established on the external face of the glazing facing the external environment,

- tempered glass with improved mechanical strength,

laminated glass with additional glazing, for example the first laminated glazing by its second face, the first diffusing means then being able to be on the laminating interlayer or on or in the additional glazing, or the second laminated glazing by its fourth face,

- tinted glass. Functional coatings of the anti-scratch coating type on one or both faces facing the external environment or elements with an optical effect of the printed element type on the glass of the glazings can be envisaged without hindering the lighting function,

The multiple glazing according to the invention may be double glazing or vacuum glazing, in particular with a peripheral sealing system preferably between the first and third faces, the connecting means comprise a particularly metallic frame possibly housing a desiccant.

In a double glazing type insulating glass or vacuum, the internal space can have a height of at least 5 mm. The greatest possible height is preferred to adjust more freely the diode section, in particular the first lateral wing (obliquity, etc.).

In double glazing with two windows simply secured, the internal space has any height.

The distance between the two windows may be between 6 and 20 millimeters, and is for example 12 millimeters.

The multiple glazing may be double glazing or vacuum glazing in particular with a peripheral sealing system, for example of mastic combined with butyl, preferably between the first and third faces or outside, especially as in the patent WO0179644.

The connecting means may comprise a particularly metallic frame of open cross section, in particular C, or closed, in particular square or rectangular, and possibly housing a desiccant.

The number of windows is not limited to two so that we can plan to use the invention in the presence of triple glazing.

The multiple glazing according to the invention can form decorative lighting, architectural lighting, signaling lighting.

The multiple illuminating glazing according to the invention can be used for any type of destination, especially for homes, industrial premises, locomotion equipment such as trains, boats, airplanes.

The multiple glazing according to the invention may be intended in particular:

- a building glazing, such as an illuminating facade, an illuminated window, a ceiling lamp, a floor slab or lighting wall, an illuminated glazed door (bay window, door window ...), an illuminating partition, an illuminated stair step, a lighting element of roofing,

- to a transport vehicle, such as a side window or illuminated glass roof or an illuminated window, an illuminated glass door, including public transportation, train, subway, tramway, bus or water or air vehicle (plane),

- street or urban lighting,

- a glazing of street furniture, such as an illuminated glazed part of a bus shelter, a balustrade, a display case, a window, a shelf element, a greenhouse, - an interior furnishing glazing, such as an illuminating wall of a bathroom, an illuminating mirror, with an illuminated glass part of a piece of furniture,

- a glazed part, in particular door, glass shelf, lid of refrigerated domestic or professional equipment. The present invention is now described by way of purely illustrative and non-limiting examples of the scope of the invention, and from the attached drawings, in which:

- Figure 1a is a schematic cross-sectional view of a multiple glazing LEDs 100 in a first embodiment of the invention;

- Figure 1b is a partial schematic perspective view of the diode section of the multiple glazing 100 of Figure 1a;

- Figure 1c is a schematic top view of the multiple glazing 100 of Figure 1 (first side illuminating strip);

FIG. 1 d is a schematic rear view of a metal plate intended to form another diode profile 3 that can be integrated in a multiple light-emitting diode-based glazing unit according to the invention;

FIG. 1e is a diagrammatic front view of the diode section obtained from the plate of FIG. 1d;

- Figure 1f is a schematic top view of a multiple glazing with the profile of Figure 1 e (first side illuminating strip);

FIG. 1 g is a diagrammatic front view of another diode profile that can be integrated in a multiple light-emitting diode glazing unit according to the invention; - Figure 1h is a partial schematic perspective view of the diode profile of Figure 1 g;

- Figure 1 i is a schematic top view of a multiple glazing with the profile of Figure 1 g (first glazing side);

- Figure 2a shows a schematic cross-sectional view of a multiple glazing LEDs 200 in a second embodiment of the invention;

FIG. 2b is a partial schematic perspective view of the diode section of the multiple glazing 200 of FIG. 2a;

- Figure 2c is a schematic top view of the multiple glazing 200 of Figure 2a (first glazing side);

- Figures 3 to 7 show schematic cross-sectional views of multiple glazing LED 300 to 700 in other embodiments of the invention.

Figure 1 schematically shows a cross-sectional view of a multiple LED illuminating window 100 in a first embodiment of the invention.

The glazing 100, here an insulating glazing unit, comprises:

- A first flat glass 1, mineral glass, for example a square or rectangular glass sheet, with first and second main faces 1 1, 12;

a second planar glazing 1 ', for example a square or rectangular glass sheet, with a main face facing the first face, said third face 1', and another main face 12 ', said fourth face;

- the first and second glazing 1, 1 'being secured by a peripheral connection means 5 which is a peripheral sealing system in the form of a metal frame 5 with butyl 51 on the surface of the glasses and containing a desiccant 52, and surrounded by a sealant 5 ', the first and second glazings being spaced apart by an internal space 13 between the first and third faces January 1,

1 ', filled with a gas blade, such as rare gas (s) or air,;

a first group of inorganic light-emitting diodes 2 (or LEDs) along a first longitudinal edge of the glazing 100, arranged in space internal, diodes aligned and regularly distributed on a first elongated PCB support of diodes 20, of the bar type;

a second group of inorganic light-emitting diodes 2 (or LEDs) along the second longitudinal edge of the pane 100, diodes aligned and evenly distributed over a second, elongate PCB diode support 20, of the strip type.

Each of the diodes 2 has a given emission spectrum in the visible, for example a white light, and with a main emission ray F1, said first main ray, going directly on the first face 1 1 without encountering reflection (s). ), for example radius F1 substantially normal to the first face January 1. For simplicity, the diodes of said group are chosen with the same (only) main direction of emission. For uniform illumination, the diodes of the same group are chosen with the same spectrum, mono or polychromatic. The emission cone may be symmetrical or asymmetrical with respect to F. The emission cone may be, for example, lambertian. The beam of each diode is divergent and defined by a half-angle at half-height of 60 °.

The diodes 2 are of the SMD type or of the "CHIP ON BOARD" type. The first and second PCB supports 20 are straight metal strips, in particular aluminum, and optionally with a diffusing surface (not shown) around the diodes 2 for ray recycling.

Each group of diodes 2 is arranged for direct illumination via the first glazing unit 1 in a peripheral illuminating strip 40, of given width and having over its entire width means 4 for diffusing the light emitted by the diodes 2 associated with the first glazing unit, said first diffusing means.

The first peripheral illuminating strip 40 associated with the first group of diodes is along the first longitudinal edge of the pane 100. Another first peripheral illuminating strip 40 is associated with the second group of diodes along the second longitudinal edge of the pane 100.

The first main ray F1 goes on the first diffusing means. The adjacent diode bundles of the first group overlap on the surface of the first scattering means.

The first diffusing means 4 are able to modify the light transmission of the glazing 1 for example so that it is between 40 and 85%. The diffusing means 4 prevent too intense transmission of the illuminating rays emitted by the diodes, substantially reduce the glare of an individual looking towards the glazing 100.

The diffusing means 4 on the face 1 1 of the glass are obtained:

- here by sanding, or acidizing the glass as realized for the SAINT-GOBAIN GLASS Satinovo® glass,

or alternatively by adding a diffusing layer, for example enamel and obtained by screen printing or a diffusing layer such as made for Smoothlite® glass from SAINT-GOBAIN GLASS, the screen printing having the advantage of making it possible to obtain any type of design with well-defined boundaries,

or alternatively in the thickness of the glass, by laser etching.

In another variant, the diffusing means are constituted by the design of the diffusing intermediate plastic material when the glass 1 is laminated via a lamination interlayer to an additional glass.

The first two illuminating strips 40 are here rectilinear (as seen in FIG. 1c) each having a first longitudinal edge 41 and a second longitudinal edge 42.

Naturally, the first two illuminating strips 40 may be identical or distinct in their shape, their width, their color, their nature (different diffusion means, etc.).

The width of each first illuminating strip 40 is for example less than 200 mm or even 100 mm.

On the first pane 1, a central strip 60, preferably wider than the illuminating strips, separates the first illuminating strips 4. This is a zone of transparency 60 of the first pane 1 preferably facing a transparent area 60 'of the second glazing 1'. As a variant, by addition of layer (s) in particular, it is a reflecting zone forming a mirror or a colored decorative zone or a translucent zone.

For each group of diodes 2, the glazing 100 further comprises in the internal space 13, a first diode section 3, which is a monolithic metal piece, for example anodized aluminum and less than or equal to 3 mm thick, with two folds or curvature (s).

Each diode section 3 (shown in perspective in FIG. 1b) comprises:

a first flat, elongated base 30 of width less than the width of the first diffusing means 4, base with a front main face opposite first diffusing means 4 and carrier of the support 20 of the diodes 2, support 20 centered on these diffusing means 4,

- and on both sides of the first base and attached to the first base:

a first elongated lateral wing 31 forming an optical concentrator, plane and of rectangular cross-section, first wing 31 deviating from the first base towards the first face and oblique with respect to the first face to receive first so-called lateral radii R1 of the first group of diodes with angles greater than or equal to the half-angle at half-height a and to reflect them,

on an area facing the first base with the first diffusing means or reflecting them in an area facing the first wing with the first diffusing means,

a second elongated lateral wing 32, opposite the first wing with respect to the first base, flat and of rectangular cross-section, second wing 32, moving away from the base 31 towards the first face while being oblique relative to the first face, the second wing being adapted to receive said second lateral radii R2 of the first group of diodes from angles greater than or equal to the half-angle at half-height a and to reflect them:

- on an area facing the first base 30 with the first diffusing means,

- towards the first oblique wing,

- on an area facing the second wing with the first diffusing means.

To do this, in a simple way, for each diode profile 3:

the first base 30 is flat, of width less than the width of the first diffusing means 4,

the first lateral wing 31, plane, oblique with respect to the first face, forming an angle of deflection of 45 ° relative to the first face January 1,

the second plane lateral wing 32 deviates from the front face of the first base 30 in the direction of the first face 11 and is oblique with respect to the first face, forming an angle of deflection of 45.degree. to the first side 1 1.

The cross section of each section is therefore flared U-type. Each diode section 3 has a bearing surface or even attachment to the third face January 1 'or alternatively may be spaced from the third face. The first wing 31 and the second wing 32 extend until they come into contact with the first face 1 1 or until at most a clearance of less than 5 mm to redirect the maximum of lateral rays.

The width of the first illuminating strip 40 is substantially equal to the width of the first diffusing means 4, and corresponds to the vertical projection on the first glazing 1, of the width between the first and the second wings 31, 32.

The diodes 2 are soldered on tracks that are electrically insulated from the metallic material of the PCB support 20 in play. The metallic material of the support being thermal conductor, the support could be directly pressed against the first base itself thermal conductor to obtain the dissipation thermal. Fixing the support to the base can then be performed for example by clipping and / or screwing.

Here is interposed a thermal conductive fastening material 21 which is for example glue or double-sided adhesive tape to obtain even better heat dissipation.

The adhesive tape 21 has the advantage of providing a calibrated thickness, allowing the support 20 of the diodes 2 to be perfectly flat and to ensure that the diodes are all equidistant from the first glazing 1. In addition, the adhesive tape allows its prior fixing to the support 20. It is also possible to use thermal grease between the support and the first base 30 such as the compound CK4960® sold by Jetart.

For each diode section 3, it is preferable to add masking means 6 of the so-called rear face of the first base 30, or even to mask the first 31 and the second flange 32. For example, it is a reflective layer 6 forming a mirror, a decorative layer for example colored, in particular an enamel (screen printed, etc.) or a frosting of the second glazing (1 ').

For each diode section 3, it is preferred to add on the first face 1 1 (or alternatively on the second face or on an additional glazing unit associated with the second face), masking means 61, 62 said before the end of the first wing 31 or even the second wing 32, selected from a reflective layer forming a mirror, a diffusing zone, especially frosted of the first glazing, a decor layer, in particular colored, and preferably of the same type as the first diffusing means or as the dark area chosen reflective mirror, translucent, or decorative.

It suffices, for example, to extend the diffusing zone beyond the illuminating zone As an example of the dimensions of the various elements: - the glazing surface is 600x600 mm with double-glazed assembly of the two extra-clear 2.9 mm thick glasses,

- the height of the internal space is 28 mm,

the width of each first illuminating strip is 40 mm and the length of each first illuminating strip 40 is 550 mm,

- the width of the central dark zone is approximately 400 mm,

each support carries 30 diodes, is 10 mm wide, 550 mm long, of the order of 1.9 mm thick, and

the diodes, without optics, are of height of the order of 2 mm, of width less than 6 mm, with a regular distance between diodes 2 of 18 mm,

the distance between the diodes and the first scattering means is of the order of 20 mm,

the diodes have an individual power of 0.3 W (approximately), an efficiency of at least 40 Im / W (lumens / Watt),

- the width of the first base is 15 mm.

The illumination can be particularly illuminating with a total luminous efficiency of at least 40 Im / W and an optical efficiency (ratio between the total efficiency and the efficiency of a diode - lumens / Watt) greater than 70%, all being homogeneous and very little dazzling.

Efficiency is measured in the usual way using a goniometer and at room temperature. The thermal conduction property of the base, the support of the diodes, and means for securing the support to the base, generate a dissipation of the heat released by the LEDs, contribute to the luminous efficiency.

We can thus form:

- in a building application, an illuminating facade, an illuminated window, a ceiling lamp, a floor slab or illuminating wall, an illuminated glass door, a partition wall, a stair step,

- in a transport vehicle application, an illuminated side window or an illuminated glass roof, an illuminated window, an illuminated glass door, in particular for public transport, train, metro, tramway, bus or aquatic or aerial vehicle (airplane) ,

- in a street or urban lighting application,

- in street furniture, an illuminated glass part of a bus shelter, a balustrade, a display case, a window, an illuminated shelf part, a greenhouse, in an interior furniture application, an illuminating wall of a bathroom, an illuminating glazed part of a piece of furniture,

- a glass wall of a refrigerated equipment (bins cover, glass door, shelf ...).

The first glazing 1 is for example oriented inward after installation.

Each glazing can cover various shapes such as rectangular, square, round or any other geometric shape adapting to the desired design.

Each glazing has a high light transmission of at least 85%. It may be as an example, depending in particular on the aesthetic rendering or the desired optical effect, and / or the destination of the glazing of:

glass of standard composition, such as Planilux® glass from Saint-Gobain Glass, with a slightly green coloring;

- Extra-clear glass without coloration (neutral), such as Diamant® glass from SAINT-GOBAIN GLASS;

pyramidal printed glass, such as Albarino® glass from the company SAINT-

GOBAIN GLASS, reliefs in the form of pyramids being established on the face opposite the external environment;

- tempered glass with better mechanical resistance.

Figure 1d is a rear schematic view of a metal plate of generally cross shape for forming another diode profile 3 integrable into a multiple glazing illuminating LEDs according to the invention.

The dotted lines represent the fold zones 32 'to form a first cross-shaped base, and on either side of the first base and joined to this base of the first lateral wings 31 and second lateral wings 31, 32 by adding cutting areas 32 '.

Figure 1 e is a schematic front view of the diode section obtained from the plate of Figure 1 d.

To simplify the assembly, there is a first vertical straight PCB 20 carrying a first group of diodes 2 and, on either side of this strip, two horizontal linear PCB strips 20 and carrying other groups of diodes 2 .

Figure 1f is a schematic view from above of a multiple glazing with the section of Figure 1 e (first glazing side) showing the central central illuminated strip 40 and adjacent peripheral dark areas 60 for example transparent. FIG. 1 g is a diagrammatic front view of another diode profile that can be integrated in a multiple light-emitting diode-based glazing unit according to the invention.

The diode section 3 is of generally annular shape with a first annular base and first and second wings joined to this base.

Figure 1h is a partial schematic perspective view of the diode section of Figure 1 g showing that the cross section of the profile is flared U-type.

Figure 1 i is a schematic top view of a multiple glazing with the profile of Figure 1 g (first glazing side) showing the central annular illuminating strip 40 and an adjacent central dark area 60, for example transparent.

FIG. 2a represents a schematic cross-sectional view of a multiple glazing unit with light-emitting diodes 200 in a second embodiment of the invention.

Only the differences with respect to the glazing 100 are described.

The glazing 200 differs from the glazing 100 in particular by:

the presence of a single diode section 3, of a single first illuminating strip

40, chosen centrally and with two peripheral zones of transparency 60, - by adding on the first base 30, next to the first diode PCB support 2a, a second diode PCB support 2b.

In the second group of diodes, each of the diodes 2 has a given emission spectrum in the visible, for example a white light, and with a main emission radius F2, said second main beam, going directly on the first face 1 1 without meeting any reflection (s), substantially normal radius F2 to the first face 1 1.

The emission cone may be symmetrical or asymmetrical with respect to F. The emission cone may be, for example, lambertian. The beam of each diode is divergent and defined by a half-angle at half-height of 60 °.

In the second group of diodes, the diodes 2 are also SMD type or "CHIP ON BOARD" type and their PCB support 20 is also a straight metal strip, in particular aluminum, and optionally with a diffusing surface (not shown) around diodes 2 for ray recycling.

For simplicity, the diodes of said group are chosen with the same (only) main direction of emission F2 and identical to F1.

For uniform illumination, the diodes of the two groups are chosen with the same spectrum, mono or polychromatic and the same emission cone. The second wing receives second so-called lateral radii (R4), of the second group of diodes (2b) of angles greater than or equal to the half-angle at half-height (a) and returns it (by reflection):

on the first diffusing means (4) in an area facing the first base (30),

- or on the first oblique wing (31) (which will return them on the first diffusing means),

- Or in an area of the first glazing (1) facing the second wing (32), area with the first diffusing means.

And for a given distance L12 between the center of a diode 2a of the first group and the center of an adjacent diode 2b of the second group, a first reference radius of the first group of angle equal to the half-angle at mid a height and going towards the second wing such that tanoc = L12 / H1, and a second reference radius of the second group of angle equal to the half-angle at half-height a and going to the first wing such that tanoc = L12 / H2, the distance H2 between the diodes of the second group and the first diffusing means (for example being equal to H1.

From a dimensional point of view, the width of the first base 30 is widened to 30 mm and the distance "intergroup" between the neighboring diodes 2a and 2b of the two bars 20 is 13 mm.

The first scattering means here are a diffusing layer.

Furthermore, it is optionally simplified the connection means in a single metal frame for example to form a partition.

Figure 2b is a partial schematic perspective view of the diode section of the multiple glazing 200 of Figure 2a with the two diode supports 2a, 2b.

FIG. 2c is a schematic view from above of the multiple glazing unit 200 of FIG.

2a (first glazing side 1); showing the central illuminating zone 40 and the peripheral transparent zones 60.

Figures 3 to 7 show schematic cross-sectional views of multiple LED displays 300 to 700 in other embodiments of the invention.

Only the differences compared to the glazings already illustrated are described.

The glazing 300 shown in FIG. 3 differs from the glazing 200 in that the two PCB type metal supports are replaced by a single support 20 which is a plastic PCB plate. The diodes are soldered on heat dissipating surfaces 22 (called "thermal pad" in English) attached to the two opposite faces of the plate 22a and 22c and according to its thickness 22b in through holes 22.

For the removal of heat, the fixing of the plate 20 is performed by a thermal conductive material 21 associated with the heat dissipating surfaces 22c and which must be electrically insulating.

The diffusing means 4 are made by acidizing the first face 1 1.

The glazing 400 shown in FIG. 4 differs from the glazing unit 200 in the double U shape of the profile 3, thus with a second base 30 'and third and fourth lateral flanges 31', 32 '. The masking layer 6 'of the bases 30' is a decorative layer.

The glazing 500 shown in FIG. 5 differs from the glazing 100 in that the second glazing 1 'comprises a second illuminating strip 40' facing the first illuminating strip 4, with second diffusing means 4 associated with the second glazing 1 ', in particular of width substantially identical to the first diffusing means 4.

The first diode section 3 is movable and sufficiently spaced from the glazings for rotation about an axis parallel to the first glazing 1.

In a first position, the first group of diodes 2 illuminates said first illuminating strip 40.

In a second position, the front face of the first base 30 is opposite the second diffusing means 4, the first group of diodes illuminates said second illuminating strip 40 'and the first wing 31 forms an optical concentrator for the second illuminating strip.

The dark zone 60 associated with the first glazing forms a mirror for example by depositing a silvering on the first face January 1.

The dark zone 60 'associated with the second glazing 1' and facing the zone 60 forms a mirror for example by depositing a silvering on the third face 1 1 '.

The glazing 600 shown in FIG. 6 differs from the glazing 100 in that:

the second glazing 1 'comprises a second illuminating strip 40' facing the first illuminating strip 40 and associated with the second glazing 1 ', with second diffusing means 4 associated with the second glazing 1', in particular of a width substantially identical to the first diffusing means 4,

another group of diodes 2 on a metal PCB 20 illuminate this second illuminating strip 40 ', a second diode section, in particular similar to the first diode section, comprises a second base contiguous to the rear face of the first base, and carrier of this other group of diodes 2 and two lateral wings in particular similar to the lateral wings 31 , 32, forming an optical concentrator for the second illuminating strip 40 '.

To arrange these two profiles we add their heights.

The glazing 700 shown in FIG. 7 differs from the glazing 100 in that the second glazing 1 'comprises second illuminating strips 40' offset from the first peripheral illuminating strips 40 and associated with the second glazing 1 'with second diffusing means 4 associated with the second glazing 1 'and offset from the first diffusing means 4.

Groups of diodes 2 'illuminate said second illuminating strips 40'.

Each first diode section 3 has an extension comprising:

another carrier base 30 'on a front face of said other group of diodes 2', joined to the first lateral wing 31, the first lateral wing, having a so-called rear surface opposite to the front face (meeting the lateral radii R1 of the first group of diodes 2) forming an optical concentrator of lateral rays emitted by the other group of diodes 2 ',

- Another side wing 31 'similar to the first side wing 31, also forming optical concentrator of lateral rays emitted by the other group of diodes 2'.

The central dark zone 60, mirror form 6 deposited on the first face, comprises at least one surface facing the rear face of the other base 30 'opposite the front face with the diodes 2', to mask the profile.

A central dark zone 60 'associated with the second glazing also forms a mirror 6' and is deposited on the third face 11 '.

Preferably, for this application, the diffusing means 4 are obtained by sandblasting mirror reflecting layers 6, 6 'to simplify manufacture.

This glazing is for example a partition.

Claims

Multiple light emitting diode glass (100, 200, 300, 400, 500, 600, 700) comprising:

a first glazing unit (1), with first and second main faces (1 1, 12),

a second glazing unit (1 '), with a main face facing the first face, said third face (11'), and another opposite main face, said fourth face (12 '),

- The first and second glazings (1, 1 ') being secured by a peripheral connection means (5) and spaced apart by an internal space (13) between the first and third faces (1 1, 1 1'), vacuum space or filled with a gas blade,

at least a first group of light-emitting diodes (2, 2a, 2b), each of the diodes having a given emission spectrum in the visible, each of the diodes (2, 2a, 2b) being arranged in the internal space and in view of the first face for direct illumination via the first glazing unit (1) in a first illuminating zone (40), each of the diodes (2, 2a, 2b) having a main emission radius (F1), said first main beam given,

characterized in that the first illuminating zone is elongate, forming an illuminating strip (40) of given width with first and second longitudinal edges and comprising means for diffusing the light emitted by the diodes (4) associated with the first glazing (1 ) and opposite the diodes, said first diffusing means,

in that the beam of each diode of the first transmitted group is divergent and defined by a half-angle at mid-height of at least 30 °, the first main ray F1 going on the first diffusing means, the adjacent diode beams the first group overlapping on the surface of the first diffusing means, and the distance H1 between the diodes and the first diffusing means being at least 5 mm, or even 10 mm,

and in that the glazing further comprises a first diode section (3), in one or more rooms (30 to 32), extending into the internal space (13) and comprising:

a first elongate base (30) with a front face so-called opposite the first diffusing means (4) and carrying diodes (2, 2a, 2b),

a first elongated lateral wing (31) forming an optical concentrator, preferably joined to the first base, first wing (31) deviating from the first base in the direction of the first face and oblique with respect to the first face to receive the first so-called lateral rays (R1) of the first group of diodes from angles greater than or equal to the half-angle at half-height a and return them to the first diffusing means in an area opposite the first base or returning them to an area of the first glazing facing the first wing preferably with the first diffusing means,

and in that the multiple glazing comprises a first dark zone (60) associated with the first glazing unit, the first dark zone being adjacent to the first illuminating strip (40) and offset from the surface of the first glazing unit facing the front face of the the first base (30).

Multiple light emitting diode LED (100, 200, 300, 400, 500, 600, 700) according to the preceding claim characterized in that at least 80% of so-called central radii of angles less than or equal to the half-angle to half -hauteur a go on the first diffusing means (4),

the width of the first diffusing means (4) being such that the central radii go directly to the first diffusing means (4),

and / or the extent of the first wing (31) being such that the central rays go on the first diffusing means (4) after reflection on the first wing (31),

and / or the profile (3) comprises a second elongated lateral flange (32), opposite the first flange (31) with respect to the first base (30), preferably joined to the first base (30) , and the extent of the second wing being such that the central rays go on the first diffusing means (4) after reflection on the second wing (32).

Multiple light emitting diode-based glazing (100, 400, 500, 600, 700) according to any one of the preceding claims, characterized in that the profile (3) comprises a second elongate lateral flange (32), in opposition to the first flange (31) relative to the first base, preferably joined to the first base (32), forming an optical concentrator in particular of rectangular or square cross-section, second flange (32) preferably departing from the base (31); ) in the direction of the first face and preferably oblique with respect to the first face, the second wing being able to receive said second so-called lateral radii (R2) of the first group of diodes of angles greater than or equal to the half-angle at mid - height (a) and to send them back: on the first diffusing means in an area opposite the first base,

- or on the first oblique wing,

or in an area of the first glazing facing the second wing, preferably a zone with the first diffusing means,

and optionally the second wing, preferably joined to the first base, forming a spacer of the first and second glazings, or part of said connecting means.

A multiple light emitting diode-based glazing unit (200, 300) as claimed in any one of the preceding claims, characterized in that the first base carries a second group (2b) of the aligned diodes parallel to the first group of aligned diodes, each of the diodes of the second group having a given emission spectrum in the visible, each of the diodes (2b) being arranged in the internal space and facing the first face for direct illumination via the first glazing (1) in the first illuminating strip (40), each of the diodes (2b) of the second group having a main emission radius (F2), said second main ray, going directly on the first face (1 1), the beam of each diode of the second emitted group is divergent and defined by a half-angle at half-height a of at least 30 °, the second main ray F2 going on the first diffusing means, the adjacent diode beams of the second group overlapping on the surface of the first diffusing means, the adjacent diode bundles of the first and the second group overlapping on the surface of the first diffusing means, the distance H2 between the diodes of the second group and the first diffusing means (for example the third face) being at least 5 mm, and in that the profile (3) comprises a second elongated lateral flange (32), opposite the first flange (31) relative to the first base, preferably joined to the first base (32) forming an optical concentrator in particular of rectangular or square cross-section, second wing (32 deviating from the base (31) in the direction of the first oblique face relative to the first face, the second wing being adapted to receive said second lateral radii (R4) of the second group of diodes (2b) of angles greater than or equal to the half-angle at mid-height (a) and to send them back:

on the first diffusing means (4) in an area facing the first base (30), - or on the first oblique wing (31),

- or in an area of the first glazing unit (1) opposite the second flange (32), preferably with the first diffusing means,

and in that preferably for a given distance L12 between the center of a diode of the first group and the center of an adjacent diode of the second group, a first reference radius of the first group of angle equal to half is defined. half-way angle to such that tana = L12 / H1,

and a second reference radius of the second angle group equal to the half-angle at half-height a such that tana = L12 / H2.

Multiple illuminating glazing unit (100, 200, 300, 400, 500, 600, 700) according to any one of the preceding claims, characterized in that the first lateral wing (31) oblique with respect to the first face (1 1) forms a so-called deflection angle of between 35 and 55 ° including these values with respect to the first face (1 1), and preferably the second flange (32) deviates from the front face of the first base (30) by direction of the first face and is oblique with respect to the first face, forming a so-called deflection angle of between 35 and 55 ° including these values with respect to the first face (1 1).

Multiple light emitting diode-based glass (100, 200, 300, 400, 500, 600, 700) according to any one of the preceding claims, characterized in that the vertical projection of the inner end of the first lateral wing (31) on the first face (1 1) corresponds substantially to the first longitudinal edge (41) of the illuminating strip (4) and even diffusing means, and preferably the width of the first illuminating strip (40) is substantially equal to the width of the first diffusing means (4), and corresponds to the vertical projection on the first glazing (1), the width between the first and the second wing (31, 32).

Multiple light emitting diode-based glazing (100, 200, 300, 400, 600, 700) according to any one of the preceding claims, characterized in that the first wing (31) and / or the second wing (32) extend until it comes into contact with the first face (1 1) or until a maximum clearance of less than 5 mm is allowed.

Multiple light emitting diode-based glazing unit (100, 200, 300, 400, 500, 600, 700) according to one of the preceding claims, characterized in that the first base (30) of the first diode section (3) is a single piece metallic (30), in particular aluminum, copper or stainless steel, forming a first thermal conductor.

Multiple light emitting diode-based glass (100, 200, 300, 400, 500, 600, 700) according to one of the preceding claims, characterized in that the diodes (2) of the first group are on a first common support (20, 20 '), the first support being a printed circuit board associated with the first base (30), in particular a bar.

Multiple light emitting diode with light-emitting diodes (100, 200, 300, 400, 500, 600, 700) according to the preceding claim, characterized in that the first support (20, 20 ') is secured to a first thermal conductor of the type metal (30), in particular of aluminum, copper or stainless steel, preferably formed at least by the first base (30) of the first diode section (3), said first support incorporating heat dissipation means (20) and / or being associated with heat dissipation means (22a, 22b, 22c) connected to the first thermal conductor (30).

Multiple light emitting diode with light-emitting diodes (100, 200, 300, 400, 500, 600, 700) according to the preceding claim, characterized in that the heat dissipation means (20, 22a, 22b, 22c) integrated and / or associated with first support of the diodes are constituted by the material constituting the first support (20), of the metallic type, or by metal surfaces (22a, 22b, 22c) integrated in the first electrical insulating support, and possibly by means of securing (21) from the first support to said first thermal conductor (30), in particular formed by the first base (30) of the first diode section (3), which are thermally conductive, of the adhesive or thermally conductive adhesive type and made of an electrically insulating material if the support is electrical insulator.

Multiple light emitting diode-based glass (100, 200, 300, 400, 500, 600, 700) according to one of the preceding claims, characterized in that the first diode section (3) is a monolithic metal part, with one or several folds or curvature (s), including the first base, the first wing and preferably the second wing, in particular a piece of thickness less than or equal to 3 mm or even 1 mm.

Light-emitting diode-illuminating multi-glazing unit according to one of Claims 1 to 12, characterized in that the said second light-concentrator wing is detached from the first base and is: a straight-line profile, in particular a metallic or metallized, plane or concave profile, in particular forming a spacer for the first and second glazings,

- Or a profile, particularly metallic or metallized, plane or concave, forming part of said connecting means (5) defining the internal space (13).

14. multiple glazing LED illumination according to one of the preceding claims characterized in that the first illuminating strip (40) is curved, in particular annular, and the first base (32) and the first flange (31) are also curved.

15. Multiple light emitting diode (100, 200, 300, 400, 500, 600, 700) LEDs according to any one of the preceding claims, characterized in that the first dark area (60) is selected from a zone (semi ) transparent first glazing preferably facing a transparent zone of the second glazing, a reflecting zone forming a mirror, a translucent zone, a decorative zone.

16. Lighting multiple light emitting diode (100, 200, 300, 400, 500, 600, 700) according to any one of the preceding claims, characterized in that it comprises masking means (61, 62) said before the end of the first wing (31) or the second wing (32), selected from a mirror reflecting layer, a diffusing area, especially frosted of the first glazing, a decor layer, especially colored, and preferably including of the same type as the first diffusing means (4) or the chosen dark zone reflecting mirror, translucent, or decorative.

17. Multiple light-emitting diode-based glazing (100, 200, 300, 400, 500, 600, 700) according to any one of the preceding claims, characterized in that it comprises between the third face (1 1 ') or the fourth face (12 ') and the first base (30), in particular forming part of the first base and / or on the third or fourth face, masking means (6, 6') of the so-called rear face of the first base (30), opposite to the front face; even masking of the first wing (31) and the possible second wing, selected from a mirror reflecting layer, a frosted area of the second glazing (1 '), a decor layer, including colored.

18. Lighting multiple light emitting diode (500) according to one of the preceding claims characterized in that the second glazing comprises a second illuminating strip (40 ') associated with the second glazing (1') and facing of the first illuminating strip, with second diffusing means (4) associated with the second glazing (V), in particular of width substantially identical to the first diffusing means (4) and the first diode section (3) is movable, in particular by a rotation around an axis parallel to the first glazing (1), and in that in a first position, the first group of diodes (2) illuminates said first illuminating strip (4) and in a second position the front face of the first base is next to the second diffusing means (4), the first group of diodes illuminates said second illuminating strip (40 ') and the first wing (31) forms an optical concentrator for the second illuminating strip.

Multiple light emitting diode-emitting glass (600) according to one of the preceding claims, characterized in that the second glazing comprises a second illuminating strip (40 ') facing the first illuminating strip (40) and associated with the second glazing (V) , with second diffusing means (4) associated with the second glazing (V), in particular of width substantially identical to the first diffusing means (4), another group of diodes (2) illuminating said second illuminating strip (40 '), and it comprises a second diode section, in particular similar to the first diode section, with a second base particularly contiguous to the so-called rear face of the first base, opposite to the front face, and a side wing particularly similar to the first lateral wing, forming an optical concentrator for the second illuminating strip.

Multiple light emitting diode LED glazing according to one of the preceding claims, characterized in that it comprises another first illuminating strip (40) associated with the first glazing unit (1) with other diffusing means (4 ') in particular with a width substantially identical to the first diffusing means (4), the first strips (40) preferably joined, forming an L, or even a cross,

the first base being in L, or even in cross, and carrying another group of diodes (2) illuminating said other first illuminating strip (40a), the first lateral wing and the second lateral wing are joined to the first base and formed in particular by folds and cuts.

Multiple light emitting diode (LED) glazing pane (700) according to any one of the preceding claims, characterized in that the second glazing comprises: a second illuminating strip (40 ') offset from the first illuminating strip (40) and associated with the second glazing unit (1'), with second diffusing means (4) associated with the second glazing unit (V) and offset from the first diffusing means ( 4),

another group of diodes (2 ') illuminating said second illuminating strip (40'),

an extension of the first diode section, with another base (30 ') carrying on a front face of said other group, in particular joined to the first lateral wing (31),

the first lateral wing (31), having a so-called rear surface opposite the so-called front surface, meeting the lateral rays (R1) of the first group of diodes, forming an optical concentrator of the so-called lateral light emitted by the other group of diodes,

- Preferably another lateral wing (31 ') in particular similar to the first lateral wing, opposite the first lateral wing relative to the other base, the other lateral wing forming the optical concentrator of the so-called lateral light emitted by the other group of diodes (2 '),

and preferably the dark area (60) comprises at least one surface facing the rear face of the other base (30 ').

Multiple light emitting diode (LED) glazing (700) according to any one of the preceding claims, the first glazing unit (1) comprises a reflective layer (6) such as silver to form an illuminating mirror except in the first illuminating strip (4) and in any other adjacent illuminating strips.

Multiple light emitting diode-based glazing (100, 200, 300, 400, 500, 600, 700) according to any one of the preceding claims, characterized in that the first bare glazing (1) has a light transmission of at least 85 % while associated with the first diffusing means (4), it has a light transmission of less than 85%, preferably between 40 and 85%.

Multiple light emitting diode-based glazing (100, 200, 300, 400, 500, 600, 700) according to any one of the preceding claims, characterized in that the multiple glazing is a double glazing unit or a vacuum glazing unit in particular with a system sealing device preferably between the first and third faces, the connecting means comprise a frame (5) optionally housing a desiccant (52). Multiple light emitting diode with light-emitting diodes (100, 200, 300, 400, 500, 600, 700) according to one of the preceding claims characterized in that it forms a decorative lighting, architectural lighting, signaling lighting. Application of the multiple light-emitting diode glazing unit (100, 200, 300, 400, 500, 600, 700) according to one of the preceding claims

- a building glazing, such as an illuminating facade, an illuminating window, a ceiling lamp, a floor slab or illuminating wall, an illuminated glazed door, an illuminating partition, a stair step, a lighting element of a roof,

- street or urban lighting,

- a glazing of street furniture, such as an illuminated glazed part of a bus shelter, a railing, a display, a window, a shelf element, a greenhouse,

- to an interior furniture glazing, such as an illuminating bathroom wall, an illuminating mirror, to an illuminated glass part of a piece of furniture,

- a glass part, including door, glass shelf, lid, refrigerated domestic or professional equipment.