WO2012028814A1

WO2012028814A1 - Illuminating decorative panel comprising light-emitting diodes

Info

Publication number: WO2012028814A1
Application number: PCT/FR2011/051980
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: FR2964176A1; TWI582975B; FR2964176B1; CN203676693U; TW201234580A

Abstract

The present invention relates to an illuminating decorative panel (100) comprising a glazing (1), at least one first decorative area (60), visible as the front face, and a first group of light-emitting diodes (2) on the rear face side for direct illumination via the glazing (1) in a first illuminating strip (40), with first diffusing means (4). The beam emitted by each diode of the first group is defined by a mid-height half-angle α of at least 30°, and the distance H1 between the diodes and the first diffusing means is at least 5 mm. The panel comprises a diode profile (3) on the rear face side, said profile having a first base (30) facing the first diffusing means (4) and carrying the diodes (2). A first long lateral flange (31) forms an optical concentrator, which is oblique to the first face, for receiving first so-called lateral rays (R1) from the first group of diodes at angles equal to or greater than the mid-height half-angle α and sending them back to the first diffusing means in an area facing the first base, or sending them back into an area of the first glazing facing the first flange. The decorative area adjacent to the first illuminating strip (40) is offset with respect to the surface of the glazing facing the front face of the first base (30).

Description

DIODES DECORATIVE AND LIGHTING PANEL

ELECTROLUMINESCENT

The present invention relates to decorative panels and more particularly to a decorative panel and 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, motor vehicle lights (turn signals, position lights), or portable lights or markers.

The interest of the diodes is their long life, their luminous efficiency, their robustness, making the equipment employing them more durable, and requiring a reduced maintenance.

Recently their use has developed in the field of mirrors to provide illuminating mirrors.

European patent application EP 1 834 551 discloses a diode illuminating mirror. Such a mirror is designed by the laminated assembly of a reflective glass sheet on the rear face fulfilling the mirror function, a clear lamination structure and a clear glass sheet front.

The diodes are inserted into the 0.76 mm polyvinyl butyral (PVB) lamination interlayer and connected by an electroconductive layer with insulated areas deposited on the reflective glass sheet. The diodes comprise directional means for orienting the rays substantially perpendicularly to the clear glass sheet.

The diodes are further distributed around a transparent window formed in the clear glass facade of 3.15 mm and constituting the mirror as such. The facing surface of the diodes is sandblasted to disperse the light.

However, such a mirror is complicated to produce; expensive, and its optical performance is not optimal.

The aim of the invention is to propose a simpler and more optically efficient decorative and illuminating diode panel that is more compatible with industrial requirements (ease and speed of production, reliability, etc.).

The invention further proposes to expand the range of decorative and illuminating panels. For this purpose, the present invention firstly proposes a decorative and illuminating panel comprising:

a glazing, in particular a plane, made of inorganic or even organic glass, with a first principal face forming the rear face, and a second principal face forming the front face,

at least one first decorative zone, in particular forming a mirror, visible on the front face,

at least one first group of light-emitting diodes, each of the diodes having a given emission spectrum in the visible, in particular polychromatic, each of the diodes being on the back-side side and arranged for direct illumination via the glazing in a first zone; illuminant, each of the diodes having a main emission radius (F1), said first main ray, (going directly to the rear face without encountering reflection (s)), the first illuminating zone being an illuminating strip of given width and with first and second longitudinal edges comprising means for diffusing the light emitted by the diodes associated with the glazing and facing the diodes, said first diffusing means, means preferably on the rear face or in the glazing.

In addition,

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 angle radius F1 at 0 °), the first main ray F1 going on the first diffusing means, 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 panel comprises a first diode section, in one or more rooms, extending on the side of the rear face and comprising:

a first elongated base, in particular of width less than the width of the illuminating strip, or even of the first diffusing means, base with a main face, said front facing the first diffusing means, and carrying diodes directly or not,

a first elongated lateral wing forming an optical concentrator, preferably joined to the first base, in particular of cross-section rectangular or square, first wing, 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 of angles greater than or equal to half-angle at mid-height a and reflect them on an area (center) next to the first base or in an area

(peripheral) more distant from the first wing than this (central) zone or reflect them in an area facing the first wing preferably with the first diffusing means,

the decorative zone adjacent to the first illuminating strip being offset from the surface of the glazing facing the front face of the first base.

The diodes are positioned on the first diode profile 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, generally inorganic, typically based on a semiconductor chip, a source distinct from an OLED (organic diode) providing an extended illuminating surface .

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

The beam is sufficiently divergent unlike the prior art to avoid forming points (focal spots) too bright against the diodes, the contrast between these points and the areas between the diodes being important even with diffusing means.

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 limits 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 absence of focusing),

by restricting the extent of the illuminated strip, it leaves the enlarged adjacent functional decorative zone (more central or peripheral than the strip) even larger, functional area (visible); notably distinct from the narrow glazed edge area.

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 base also gives advantages to the panel according to the invention. The diodes are not directly connected to the connection circuits on the glazing but are fixed on the first base of the diode profile. It is thus possible to perform diode tests on the diode profile before integration into the glazing, thereby reducing the scrap rate of the panel. Similarly, if necessary (maintenance, color change, power), it is simple to remove the base of the diode profile.

The half-angle at half height may preferably be at least 50 °, preferably 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 1 1 for example to +/- 5 °.

The band design (s) illuminating (s) is very flexible.

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

The diode profile is naturally longer than it is 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 surface of the decorative zone, the first diode profile preferably occupies a limited space in the glazing, for example it is of a width just sufficient to fulfill its function as a concentrator.

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 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 most towards the center of the glazing

Preferably the so-called 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 strip) directly meet the first diffusers (without reflections). It is particularly preferred that the diode profile has no - (substantially) 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 half-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 reinforce the homogeneity and the luminance, the profile comprises a second elongate lateral wing, opposite the first wing with respect 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 sends them back to 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 glazing with a wall, or is part of connecting means with a wall.

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 first base may carry a plurality of groups of diodes parallel to each other on one or more supports (PCB), 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 broad 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 diodes aligned and 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 F2, said second beam main, going directly on the first face without encountering reflection (s), the beam of each diode of the second emitted group is divergent and defined by a half-angle at half height has at least 30 °, the second main ray F2 going on the first diffusing means, the adjacent diode bundles of the second group overlapping on the surface of the first diffusing means, the diod beams adjacent the first and second groups 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 .

In addition, this diode section comprises a second elongated lateral wing, opposite the first wing relative to the first base, preferably joined to the first base, optical concentrator in particular rectangular or square cross section, second wing departing from the base in the direction of the first oblique face with respect to the first face, the second wing being adapted to receive said second lateral radii, of the second group of diodes of angles greater than or equal to the half-angle at mid -Height (a) and send them back (by reflection):

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

And preferably, for the 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, defining a first reference radius of the first angle group equal to the half-angle at half height a such that tana = L12 / H1 and a second reference radius of the second angle group equal to half-angle at mid-height a such that tana = L12 / H2.

In one embodiment, for an effective concentration of lateral rays, the first lateral wing oblique with respect to the first face, forms a so-called deflection angle of between 35 and 55 ° including these values with respect to the first face, the first wing being flat (bar-type, parallelepipedic) or curved and inscribed in a mean oblique plane relative to the first face according to said angle of deflection.

And preferably the second wing can deviate from the front face of the first base towards 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. relative to the first face, the second wing being flat (of the bar type, parallelepipedic) or curved and inscribed in a mean plane (main) 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 can extend until contact with the first face or until a maximum clearance of less than 5 mm is

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.

Heat removal would avoid degrading the efficiency of the diodes, and therefore would ensure even better light efficiency and ensure the 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 elongated 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 support (PCB) of diodes can be of any shape, for example planar, in particular a strip for example rectilinear of square or rectangular cross section. The support (PCB) can be opaque because it can be masked by the opaque chosen diode profile.

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

The first diode section, particularly monolithic, may comprise several supports (PCB) of diodes 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 (PCBs) constituted by a plurality of narrow strips, or on a first common support (PCB) such as an elongated printed circuit board of greater width notably corresponding substantially to the surface from the base.

The advantage of the plurality of strips with respect to a single PCB plate (supporting multiple groups or rows of diodes) is to reduce the manufacturing cost by optimizing the usable area of the diode arrangement, allowing a flexible distribution of groups of diodes and thus 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, particularly for diodes of medium or high power, the first support (PCB) can be made integral with a first thermal conductor of the metal type, in particular aluminum, copper or stainless steel, preferably formed in the less 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 (PCB) of the diodes may be constituted by the material constituting the first support, of the metallic type, or by metal surfaces integrated in the first electrical insulating support, and possibly by means of means for securing the first support to said first thermal conductor, in particular formed by the first base of the first diode profile, which are thermally conductive, of the type adhesive or thermally conductive adhesive tape and made of an electrically insulating material if the support is electrical insulator .

Preferably the diode support (PCB) 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 (PCB) to the base can be achieved for example by clipping and / 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 diode profile. In addition, the adhesive tape allows its prior attachment to the support.

An assembly of the diode support (PCB) 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 diode profile. With a support of diodes (PCB) plastic, the diodes are soldered on heat dissipating surfaces (called "thermal pad" in English) reported on the two opposite faces 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 light efficiency, the first support (PCB) can 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 can be encapsulated, that is to say include 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 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.

The diodes can be embedded in a common protective material (waterproof, dustproof ...).

Preferably, the diodes can thus be simple chips or with a low volume encapsulation, particularly of SMD ("Surface Mounting Device" or "Chip on Board") type rather than conventional diodes, (first generation) voiclairantes and low power and luminous efficiency.

The diode can 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.

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 each other 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 one another 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 denoting 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 said first diode profile and is:

- A profile, for example of the linear strip, in particular metallic or metallized, plane or concave, in particular spacer spacer of the glazing with a support wall of the panel or also part of connection means with a support wall of the panel, possibly oblique relative at the first face and preferably forming 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 may 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 a support wall of the panel. Optionally, the first diode section has a bearing surface or even a fixing surface on a support wall of the panel.

The first diode section may be integral with this wall, or even another element in the internal space between the rear face and this wall, 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 surface of the glazing,

the vertical projection of the width between the first and second lateral wings on the glazing is of width less than 30% of the surface of the glazing, the first illuminating strip is of length at least equal to 5 cm, the first illuminating strip is notably of length substantially equal to the length of the associated lateral or longitudinal edge of the 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 (PCB) is substantially equal to the length of the diode profile,

the first (PCB) 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 glazing, for example a fairly narrow illuminating strip in the case of a large glazed surface, when a first decorative zone, in particular a central zone, has a distinct given functionality.

The width (maximum) (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 decorative area surface.

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

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

The first decorative zone (single or multiple, uniform or not) can be chosen from:

a reflective zone forming a mirror, by depositing a reflective coating on the glazing, in particular on the rear face, for example a silver coating, with preferably the first diffusing means formed by attacking the mirror,

and / or a translucent zone, satined for example by texturing of the glazing, and / or an opaque and / or colored zone, by an opaque and / or colored coating or by vitreous tinted 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 panel may preferably comprise, on the 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 of the second wing, chosen from a reflecting layer forming a mirror, a diffusing layer, a decor layer, in particular colored, and preferably in particular of the same type as the first diffusing means or the decorative zone.

For example, it is sufficient to make a diffusing zone wider than the illuminating zone or a decorative zone overflowing under the wing or wings.

The panel may comprise another first illuminating strip associated with the glazing with other diffusing means including substantially identical width to the first diffusing means, the first preferably joined strips forming an L, or even a cross, the first base being L, or even in 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.

Preferably, the panel comprises this single single glazing (as opposed to multiple glazing).

With a single glazing, the panel according to the invention is simple, lightweight, easy to handle, to install and compact.

Associated with the first diffusing means, the glazing may have 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 glazing, 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 diffusing plastic material laminated with the glazing. If the diffusing means are arranged in the thickness of the glass and / or on the rear face, they are thus protected and the front face in contact with 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 glazing is of any shape (rectangular, square, round ...) and possibly curved.

The glazing can be made of 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 glazing for its many 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, for example, according to the aesthetic rendering or the desired optical effect and / or the destination of the decorative and illuminating panel 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 by its second face, the first diffusing means can then be on the lamination interlayer or on or in the additional glazing

- tinted glass.

Functional coatings of the anti-scratch coating type on one or both sides facing the external environment or optical elements of the printed element type on the glass of the glazing can be envisaged without hindering the lighting function.

The distance between the glazing unit and a wall may be between 5 and 40 millimeters, and is for example 12 millimeters.

A spacer between the glazing unit and a wall can then be a frame (C-section, closed section including square or rectangular).

Glazing can form decorative lighting, architectural lighting, signal lighting.

The panel according to the invention can be used for any type of destination, especially for homes, industrial premises, locomotion equipment such trains, boats, aircraft.

The decorative and illuminating panel can be intended in particular:

- the building, as a ceiling lamp, wall tile, a partition,

- a transport vehicle, including public transport, train, metro, tramway, bus or water or air vehicle (plane),

- street or urban lighting,

- a window of street furniture, such as a bus shelter, a railing, a display, a window, a shelf element,

- a window of interior furniture, a bathroom wall, a piece of furniture.

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 shows a schematic cross-sectional view of a decorative and illuminating LED panel 100 in a first embodiment of the invention;

- Figure 1b is a partial schematic perspective view of the diode profile of the decorative and illuminating panel 100 of Figure 1a; - Figure 1c is a schematic top view of the decorative and illuminating panel 100 of Figure 1;

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 decorative and illuminating panel with light-emitting diodes 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 decorative panel and illuminating with the profile of Figure 1 e;

- Figure 1g is a schematic front view of another integrated diode profile in a decorative panel and illuminating LEDs 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 the decorative panel and illuminating with the profile of Figure 1 g (side glazing);

- Figure 2a shows a schematic cross-sectional view of a decorative and illuminating LED panel 200 in a second embodiment of the invention;

- Figure 2b is a schematic perspective view of the diode profile of the decorative and illuminating panel 200 of Figure 2a;

- Figure 2c is a schematic top view of the decorative and illuminating panel 200 of Figure 2a;

FIGS. 3 to 5a show diagrammatic cross-sectional views of the electroluminescent lighting and decorative panels 300 to 500 in other embodiments of the invention;

- Figure 5b is a schematic perspective view of the diode profile of the decorative and illuminating panel 500 of Figure 5a.

Figure 1 shows schematically a cross-sectional view of a decorative and illuminating LED panel 100 in a first embodiment of the invention.

The panel 100 comprises: a glazing 1, in mineral glass, plane, for example a square or rectangular glass sheet, with a first main face 1 1 forming the rear face, and a second main face 12 forming the front face,

a first group of inorganic light-emitting diodes 2 (or LEDs) along a first longitudinal edge of the pane 100, arranged on the back side, diodes aligned and regularly distributed on a first elongate PCB support of diodes 20, strip,

a second group of inorganic light-emitting diodes 2 (or LEDs) along the second longitudinal edge of the pane 100, arranged on the side of the rear face, diodes aligned and regularly 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 1 1. For simplicity, the diodes of said group are chosen with the same (only) main direction of emission F1. 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 SMD type or "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 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 glazing, said to be 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 acidification of the glass as realized for the Satinovo® glass of

SAINT-GOBAIN GLASS,

or alternatively by adding a diffusing layer, for example enamel, and obtained by screen printing an enamel, for example a diffusing layer such as made for Smoothlite® glass from SAINT-GOBAIN GLASS, the screen printing having the advantage of allow 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 glazing 1, a central decorative zone 60, preferably wider than the illuminating strips, separates the first illuminating strips 4. This is a reflective zone forming a mirror deposited on the rear face or a colored decorative zone. or a translucent area.

For each group of diodes 2, the panel 100 further comprises on the side of the rear face 1 1, a first diode section 3, which is a monolithic elongate piece metal, 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, elongate base 30 of width less than the width of the first diffusing means 4, base with a front main face opposite the first diffusing means 4 and carrying carrier 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 elongate 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 1 1 to receive first said spokes R1 side of the first group of diodes angles greater than or equal to the half-angle at half-height a and reflect,

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, which deviates from the base 30 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 opposite 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, oblique with respect to the first face, forms 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.

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 second wings 31, 32.

The diodes 2 are soldered on tracks which are electrically insulated from the metallic material of the PCB support 20 in play. The metallic material of the support being heat conducting, the support could be directly pressed against the first thermal conductive base to obtain heat dissipation. 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 preferred to add on the first face 1 1, (or alternatively on the second face or on an additional glazing 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 decorative area.

For example, it is sufficient to extend the diffusing zone beyond the illuminating zone or that the decorative zone overflows under the wing or wings. The panel 100 is fixed to a wall 1 '(wall, ceiling, partition, etc.), for example by a metal frame 5 surrounding the panel and of U-shaped cross-section with a return 51 on the front face 52.

Each diode section 3 has a fixing surface to the wall V (wall, ceiling, partition ...) by screws 5 ', arranged on the back of the bases 30 or alternatively may be spaced from this wall.

As an example of the dimensions of the different elements:

the surface of the glazing 1 is 600 × 600 mm and is an extra-clear glass 2.9 mm thick,

the distance between the wall 1 'and the glazing 1 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 decorative 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%, while being homogeneous and very 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, a ceiling lamp, a wall tile, a partition,

- a sign for a transport vehicle including public transport, train, metro, tramway, bus or aquatic or air vehicle (plane), - street or urban lighting,

- a street furniture panel, such as a bus shelter, a balustrade, a display, a showcase,

- a shelf element,

- an interior upholstery panel, such as a bathroom wall, a piece of furniture.

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

The 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 type 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.

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 decorative and illuminating panel with light-emitting diodes according to the invention

The dashed lines represent the fold areas 32 'to form a first cross-shaped base, and on either side of the first base and joined to this base; 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 .

FIG. 1f is a schematic top view of a decorative and illuminating panel with the section of FIG. 1e showing the central central illuminated strip 40 and the adjacent peripheral decorative zones 60. Figure 1g is a schematic front view of another integrated diode profile in a decorative panel and illuminating LEDs 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.

FIG. 11 is a diagrammatic view from above of a decorative and light-emitting diode-illuminating panel with the profile of FIG. 1g showing the annular central illuminating strip 40, an adjacent central decorative zone 60 and an adjacent peripheral decorative zone 60.

Figure 2a shows a schematic cross-sectional view of a decorative and illuminating LED panel 200 in a second embodiment of the invention.

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

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

the presence of a single diode section 3, of a single first illuminating strip 40, chosen central and having two peripheral decorative zones 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 mid-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), the second group of diodes 2b of angles greater than or equal to the half-angle at mid-height (a) and the return (reflection):

on the first diffusing means 4 in an area opposite 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 opposite the second flange 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 height a 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 mid-height a and going towards 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 "inter group" between the neighboring diodes 2a and 2b of the two bars 20 is 13 mm.

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

Figure 2c is a schematic top view of the decorative and illuminating panel 200 of Figure 2a; showing the central illuminating zone 40 and the peripheral decorative zones 60.

Figures 3 to 5a show schematic cross-sectional views of the decorative and illuminating LED panels 300 to 500 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 panel 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 adding a diffusing layer.

The fastening means 5 are between the glazing unit 1 and the wall 1 '.

The panel 400 shown in FIG. 4 differs from the panel 200 by the double U shape of the profile 3, thus with a second base 30 'and third and fourth lateral wings 31', 32 '.

The panel 500 shown in FIG. 5a differs from the panel 200 by the extent of the profile which comprises two extensions 34, 35, 36 on either side of the first and second, a first horizontal extension facing the decorative zone 60 and serving to fixing the profile (and the panel to the wall 1 ') by screws 5'

a second vertical extension 35 to the glazing and to the wall with a return 36 on the front face 12.

Figure 5b is a schematic perspective view of this expanded diode profile 2 of the decorative and illuminating panel 500 of Figure 5a.

Claims

CLAIMS Decorative and illuminating panel (100, 200, 300, 400, 500) comprising:

a glazing unit (1), in particular a plane, with a first main face (1 1) forming the rear face, and a second main face (12) forming the front face,

at least one first decorative zone (60), in particular forming a mirror (6), visible on the front face,

at least one 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 on the rear-side side and arranged for direct illumination via the glazing unit (1) in a first illuminating zone (40), each of the diodes (2, 2a, 2b) having a main emission radius (F1), said first principal beam given,

the first illuminating zone being 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 glazing and facing the diodes, said first diffusing means

characterized in that 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 °, the adjacent diode bundles of the first group overlapping on the surface of the first means diffusers, 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 in that the panel further comprises a first diode section (3) , in one or more pieces (30 to 32), extending from the side of the rear face 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 elongate lateral wing (31) forming an optical concentrator, preferably joined to the first base, 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 rays (R1) of the first group of diodes with angles greater than or equal to the half-angle at half-height a and returning them to the first diffusing means in an area facing the first base or returning them to an area first glazing next to the first wing preferably with the first diffusing means, and in that the decorative zone adjacent to the first illuminating strip (40) is offset from the surface of the glazing facing the front face of the first base (30).

2. Decorative and illuminating panel (100, 200, 300, 400, 500) according to the preceding claim, characterized in that at least 80% of so-called central radii angles less than or equal to the half-angle at mid-height a go on the first diffusing means (4), and in that:

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).

3. Decorative and illuminating panel (100, 400) according to any one of the preceding claims, characterized in that the profile (3) comprises a second elongate 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) preferably departing from the base (31) towards the first face and preferably oblique with respect to the first face, the second wing being adapted to receive said second lateral radii (R2) of the first group of diodes of angles greater than or equal to the half-angle at half height (a) and to send them back

on the first diffusing means in an area facing the first base or on the first oblique wing

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

4. decorative and illuminating panel (200, 300, 500) according to any one of the preceding claims, characterized in that the first base carries a second group (2b) of the diodes aligned and 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 (2b) being arranged in the internal space and opposite the first face for direct illumination via the first glazing unit (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) without encountering reflection (s), the beam of each diode of the second emitted group is divergent and defined by a half-angle at half-height to d at least 30 °, the second main beam F2 going on the first scattering means, the adjacent diode bundles of the second 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 in that the profile (3) comprises a second the elongate side (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 flange ( 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 half-height (a) and to return them:

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

- or on the first oblique wing (31)

- or in an area of the first glazing facing the second wing (32), preferably zone 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.

5. Decorative and illuminating panel (100, 200, 300, 400, 500) according to any one of the preceding claims, characterized in that the first lateral flange (31) oblique with respect to the first face, forms an angle called deflection between 35 and 55 ° including these values with respect to the first face (1 1) and preferably the second wing (32) deviates from the front face of the first base (30) in the 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 ° in including these values with respect to the first face (1 1).

6. Decorative and illuminating panel (100, 200, 300, 400, 500) 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 side (1 1) substantially corresponds 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 flange (31, 32).

7. decorative and illuminating panel (100, 200, 300, 400, 500) according to any one of the preceding claims, characterized in that the first wing (31) and / or the second wing (32) extend up to to come into contact with the first face (1 1) or to leave at most a clearance of less than 5 mm.

8. Decorative and illuminating panel (100, 200, 300, 400, 500) according to one of the preceding claims, characterized in that the first base (30) of the first diode section (3) is a metal part (30) , especially aluminum, copper or stainless steel, forming a first thermal conductor.

9. decorative and illuminating panel (100, 200, 300, 400, 500) 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 ') elongated , the first support being a printed circuit board associated with the first base (30), in particular a bar.

10. Decorative and illuminating panel (100, 200, 300, 400, 500) according to one of the preceding claims, characterized in that the first support (20, 20 ') is secured to a first thermal conductor of the metal type. (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).

1 1. Decorative and illuminating panel (100, 200, 300, 400, 500) according to the preceding claim, characterized in that the heat dissipation means (20, 22a, 22b, 22c) integrated and / or associated with the 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 insulating support electrical, and possibly by securing means (21) of 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 type glue or thermally conductive adhesive tape; and made of an electrical insulating material if the support is electrical insulator.

12. decorative and illuminating panel (100, 200, 300, 400, 500) according to one of the preceding claims, characterized in that the first diode section (3) is a monolithic metal part, with one or more folds or curvature (s), including the first base, the first wing and preferably the second wing including a piece of thickness less than or equal to 3 mm or even 1 mm.

13. Decorative and illuminating panel according to one of claims 1 to 1 1 characterized in that said second light concentrator wing is detached from the first base (30) and is a profile including metallic or metallized, plane or concave for example straight-line type.

14. decorative and illuminating panel according to any one of the preceding claims, characterized in that the first illuminating strip (40) is curved, in particular annular, and the first base (30) and the first flange (31) are also curved.

15. Decorative and illuminating panel (100, 200, 300, 400, 500) according to any one of the preceding claims, characterized in that the decorative zone (60) is chosen from a reflecting zone forming a mirror, by depositing a reflective coating on the glazing, for example a silver coating, preferably with the first diffusing means formed by etching the mirror, and / or a translucent, satin-colored zone, and / or an opaque and / or colored zone, with an opaque coating and / or colored or by glazing tinted in the mass.

16. decorative and illuminating panel (100, 200, 300, 400, 500) 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 even the second wing (32), chosen from a reflecting layer forming a mirror, a diffusing layer, a decor layer, especially colored, and preferably in particular of the same type as the first diffusing means (4) or the decorative zone (60).

17. Decorative and illuminating panel according to one of the preceding claims characterized in that the glazing comprises another first illuminating strip (40) associated with the glazing (1) with other diffusing means including substantially the same width as the first diffusing means, the first strips (40), preferably joined, forming an L, or even a cross, the first base (30) being in L, or even in cross, and carrying another group of diodes (2) illuminating said other first illuminating strip, the first lateral wing and the second lateral wing are joined to the first base (30) and formed in particular by bends and cuts.

18. Decorative and illuminating panel (100, 200, 300, 400, 500) according to any one of the preceding claims, characterized in that it comprises this single single glazing.

19. Decorative and illuminating panel (100, 200, 300, 400, 500) according to any one of the preceding claims, characterized in that the glazing (1) associated with the first diffusing means (4) has a light transmission of less than 85 %, preferably between 40 and 85%.

20. Decorative and illuminating panel (100, 200, 300, 400, 500) according to one of the preceding claims characterized in that it forms a decorative lighting, architectural lighting, lighting signaling.

21. Application of the decorative and illuminating panel (100, 200, 300, 400, 500) according to one of the preceding claims

- the building including a ceiling lamp, a wall tile, a partition,

- a transport vehicle including public transport, train, metro, tramway, bus or aquatic or air vehicle (plane),

- street or urban lighting,

- a street furniture panel, such as a bus shelter, railing, display, showcase,

- to a shelf element,

- an interior furniture panel, such as a bathroom wall, a piece of furniture.