Classifications

• • A—HUMAN NECESSITIES
  • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
  • A47G—HOUSEHOLD OR TABLE EQUIPMENT
  • A47G1/00—Mirrors; Picture frames or the like, e.g. provided with heating, lighting or ventilating means
  • A47G1/02—Mirrors used as equipment
• • G—PHYSICS
  • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
  • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
  • G09F13/00—Illuminated signs; Luminous advertising
  • G09F13/18—Edge-illuminated signs
• • G—PHYSICS
  • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
  • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
  • G09F13/00—Illuminated signs; Luminous advertising
  • G09F13/20—Illuminated signs; Luminous advertising with luminescent surfaces or parts
  • G09F13/22—Illuminated signs; Luminous advertising with luminescent surfaces or parts electroluminescent
• • A—HUMAN NECESSITIES
  • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
  • A47G—HOUSEHOLD OR TABLE EQUIPMENT
  • A47G2200/00—Details not otherwise provided for in A47G
  • A47G2200/08—Illumination
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F21—LIGHTING
  • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
  • F21V33/00—Structural combinations of lighting devices with other articles, not otherwise provided for
  • F21V33/006—General building constructions or finishing work for buildings, e.g. roofs, gutters, stairs or floors; Garden equipment; Sunshades or parasols
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F21—LIGHTING
  • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
  • F21Y2115/00—Light-generating elements of semiconductor light sources
  • F21Y2115/10—Light-emitting diodes [LED]
• • G—PHYSICS
  • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
  • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
  • G09F13/00—Illuminated signs; Luminous advertising
  • G09F13/04—Signs, boards or panels, illuminated from behind the insignia
  • G09F13/0404—Signs, boards or panels, illuminated from behind the insignia the light source being enclosed in a box forming the character of the sign
• • G—PHYSICS
  • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
  • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
  • G09F13/00—Illuminated signs; Luminous advertising
  • G09F13/04—Signs, boards or panels, illuminated from behind the insignia
  • G09F13/14—Arrangements of reflectors therein
  • G09F2013/145—Arrangements of reflectors therein curved reflectors
• • G—PHYSICS
  • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
  • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
  • G09F13/00—Illuminated signs; Luminous advertising
  • G09F13/20—Illuminated signs; Luminous advertising with luminescent surfaces or parts
  • G09F13/22—Illuminated signs; Luminous advertising with luminescent surfaces or parts electroluminescent
  • G09F2013/222—Illuminated signs; Luminous advertising with luminescent surfaces or parts electroluminescent with LEDs

Definitions

• the present invention relates to decorative panels and more particularly to a decorative panel and illuminating light emitting diodes.
• LEDs Light-emitting diodes
• the interest of the diodes is their long life, their illuminating efficiency, their robustness, making the equipment employing them more durable, and requiring a reduced maintenance.
• 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.
• 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.
• the present invention firstly proposes a decorative and illuminating panel which comprises:
• a glazing in particular a plane, made of inorganic or even organic glass, with a first main face forming the front face, and a second main face forming the rear face,
• At least one first decorative zone in particular forming a mirror, visible on the front face
• the diodes having a given emission spectrum in the visible, in particular polychromatic, each of the diodes having a main emission radius F, said first principal beam given, especially aligned diodes along an axis,
• At least one first illuminating zone in particular elongated, by the light coming from said first group of diodes, visible on the front face, and adjacent to the first decorative zone, said first illuminating zone being provided with first diffusing means associated with the glazing unit.
• 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 F at 0 °), the adjacent diode bundles of the first group overlapping on the surface of the first diffusing means.
• the diodes are arranged so that the first main beam (F) is substantially parallel to the flat glazing (or to the average plane of the glazing if it is curved), typically up to +/- 5 ° with respect to the glazing.
• the panel further comprises a profile forming a reflector of the light coming from said first group of diodes, monolithic or in several parts preferably joined, and placed on the back side, pressed against or fixed to a panel, reflector comprising:
• a main reflecting surface facing the group of diodes in particular planar or concave with respect to the first group of diodes, oblique with respect to the rear face and able to directly receive so-called central beams of said first group of diodes including the first main beam F and returning them to the first scattering means in an area between the diodes and the main reflecting surface,
• the extent of the main reflecting surface and the upper reflecting surface being such that at least 80% or even 100% of the upper side rays are reflected to the first scattering means.
• the diodes are facing glazing for a completely direct lighting. Dots (focal spots) are formed too bright opposite the diodes, the contrast between these points and the zones between the diodes being difficult to suppress even with diffusing means provided.
• the central rays, the most intense, first encounter the main reflecting surface and then the first scattering means, the lighting is then softer and distribution more homogeneous without glare.
• a diverging beam (and not parallel as in the prior art) is also chosen to spread the light sufficiently on the diffusing means.
• the diodes are positioned to form a continuous illuminating area along the length.
• the "intra-group" distance between adjacent diodes of the first group may preferably be the same for all the diodes to simplify beam overlap.
• 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 .
• the main reflecting surface can reduce the width of the surface of the first illuminating area and its shape, preferably in strip, and allow to leave an adjacent decorative area of size and shape also adjustable.
• the first illuminating area is elongated and a reflector is chosen which is a profile (a piece longer than wide).
• the first illuminating area is typically an illuminating strip with a first longitudinal edge and a second longitudinal edge.
• the main reflecting surface is on the side of the first longitudinal edge most toward the center of the glazing (and the diodes closer to the second longitudinal edge near the glazing edge). It is preferred that the reflector profile has no - (substantially) vertical wall - over the length (useful) of the profile, in particular partitioning (laterally) a diode or diodes of the first group.
• the design in illuminating zone (s) is very flexible.
• illuminating strips of distinct orientations such as an illuminating frame, an L or an illuminating cross
• a reflector of suitable shape and preferably in one piece for the main reflecting surface and the upper reflecting surface, or even for a so-called lateral surface carrying diodes and facing the main reflecting surface.
• the reflector preferably occupies a limited space.
• the surface (in particular the width) of the first illuminating zone may preferably be substantially equal to the surface (in particular the width) of the first diffusing means thus avoiding glare in the illumination zone (s) via the bare, transparent, non-transparent glazing. diffusing area.
• the first longitudinal edge of the first illuminating area may be straight or curved.
• the first illuminating zone, in strip, may be straight or curved.
• the first illuminating zone may be annular or at least with one of the longitudinal edges describing a circle or an ellipse-like shape.
• a main reflective surface describing a circle or an ellipse-like shape and delimiting one of the longitudinal edges of the illuminating zone is chosen.
• the diodes of said group are chosen with the same (only) main direction of emission F.
• the diodes 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 half-angle at half height may preferably be at least 50 °, preferably at least 60 ° or even at least 70 °.
• the central rays that are redirected by the main reflecting surface may form at least 30% of the total emission flux of the diodes of said group, or even at least 50% of the total flow of the diodes.
• a goniometer arranged to measure all the emitted (primary) rays.
• the goniometer is used to measure the emitted (primary) radiation of the group of diodes and reflected by the reflector.
• S1 / S2 is preferably greater than or equal to 30% or even 50%.
• the main reflecting surface 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 on a support of the diodes (PCB support of the diodes in particular).
• the upper reflecting surface may extend from the main reflecting surface (in particular by extending the part and / or by adding a reflective layer on a facing wall) to receive the most lateral radius (diverging).
• the lower side rays that is to say beyond the central rays
• the central rays going directly to the rear face (without encountering reflections) meets the first diffusing means.
• the reflector according to the invention may comprise a first reflection reflection zone of the emitted rays, in particular a first end (of the main reflective surface) of the reflector (ridge, etc.), forming an angle ⁇ 1 with the main emission direction F, l the extent of the first diffusing means being such that the majority, or even at least 80%, or even 100%, of so-called lateral radii beyond oc1, and towards the rear face are diffused by the first scattering means.
• the first reflection limit zone of the transmitted rays touches the rear face or is very close to it, it is of course not necessary to extend the first diffusing means beyond the contact zone (towards the distance of the diodes).
• the first reflection limit zone of the emitted rays does not touch the rear face and is too spaced, it is thus desirable to extend the first diffusing means beyond the zone under the end of the main reflective surface in a zone.
• said marginal towards the distance of the diodes, to use the maximum radii for the first illuminating area. It is preferred to limit the width of this illuminating marginal zone to less than 10 mm.
• the first scattering means may be extended to the level where the most divergent radius, that is to say defined by an angle corresponding to the maximum half-angle of emission, meeting the rear face.
• the main reflecting surface can form an acute angle of 20 ° to 60 °, in particular 30 ° to 50 ° relative to the rear face.
• the main reflecting surface extends as far as contact with the back face or up to a maximum clearance of less than 5 mm with the back side.
• the main reflecting surface and / or the upper reflecting surface may be a reflective layer (specular or diffusive reflection) for example:
• a so-called main part of the reflector with the upper reflecting surface and / or a so-called upper part of the reflector with the upper reflecting surface and / or a so-called lateral part of the carrier reflector of the group of diodes may comprise a substrate (preferably mineral):
• the reflector profile is metallic, preferably having a thickness of less than or equal to 3 mm or even 1 mm, which comprises:
• main portion which is elongated and oblique with respect to the rear face, in particular plane or concave towards the diodes, comprising the main reflecting surface
• the main reflective surface and the upper reflective surface can be formed by folds and / or bends and / or by molding and / or extrusion.
• the reflector profile according to the invention may preferably have a flared L-shaped cross-section (formed by the main part and the upper part), or even flared U formed by the main part and the upper part and a lateral part carrying the diodes.
• the main part may have an end spaced from the rear face and curved towards the opposite direction to the diodes to spread the beam, in particular by folding the flat profile piece, of straight section (metal sheet in particular).
• the diodes of the first group are arranged on a piece which is a profile preferably of metal, in particular aluminum, copper or stainless steel, thus forming a first thermal conductor.
• the diodes are not directly connected to connection circuits on a window but are fixed on a profile (preferably part of the reflector). It is thus possible to perform diode tests on this profile before integration into the panel, thereby reducing the scrap rate of the panel. Similarly, in case of necessity (maintenance, color change, power), it is easy to remove such a carrier profile of the diodes.
• This profile may optionally comprise other groups of diodes to form another illuminating strip, for example in the extension of the first illuminating strip.
• Heat dissipation by the thermal conductive profile further avoids degrading the efficiency of the diodes, and therefore ensures to provide an even better light efficiency and ensures the durability of the diodes.
• the diodes of the first group are (regularly) distributed over a first elongated common support, the first support being a printed circuit board, in particular a strip preferably disposed on a particularly metallic profile.
• PCB printed circuit board
• a printed circuit board 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 cross-section or rectangular.
• the use of such a support with its connection circuits already simplifies the manufacture and maintenance of the panel and further limits the scrap rate.
• 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 by a (lateral) part of the reflector, 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 a portion of the reflector (3), which are thermally conductive, of the type adhesive or thermally conductive adhesive tape and made of an electrical insulating material if the support is electrical insulator.
• 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.
• the attachment of the support (PCB) to a thermal conductor can be achieved for example by clipping and / or screwing.
• a thermal conductor type thermal grease, thermal tape and / or thermal glue .
• 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.
• PCB diode support
• a support (PCB) of plastic diodes 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.
• the first support can carry a free surface (flat or inclined) around the first group of diodes and diffusing, for example lacquer or paint.
• a white reflector is used.
• 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 humidity, conversion of wavelength, diffusing element.
• the diode may be for example a semiconductor chip of the order of one hundred ⁇ 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 ).
• 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.
• SMD Surface Mounting Device
• Chip on Board rather than the conventional, (first generation) voluminous diodes. 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 diode "high power” that is to say greater than or equal to 1 W or brightness greater than or equal to 80 lumens.
• the diodes are less than 1 cm high, or even 5 mm,
• 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 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 section forming the reflector (3) in particular metal, comprises:
• main part in particular a metal part, elongated and oblique with respect to the rear face, comprising the main reflecting surface (30),
• a so-called elongated upper part in particular a metallic part, extending the main part, opposite the rear face, comprising the upper reflecting surface
• the profile forming the reflector comprises a so-called lateral part, elongate, in particular a metallic part, extending the upper part, in particular plane and substantially normal to the rear face, and carrying diodes and preferably a first support of the diodes which is a card printed circuit board.
• the first illuminating area being an illuminating strip with a first longitudinal edge and a second longitudinal edge
• the vertical projection of the inner end of the main portion on the first face substantially corresponds to the first longitudinal edge of the strip.
• illuminating and even diffusing means and preferably the width of the first illuminating strip is substantially equal to the width of the first diffusing means, and corresponds to the vertical projection on the glazing of the width between the lateral part and the main part.
• the panel may comprise so-called masking means before the end of the main reflecting surface or even the lateral reflecting part, 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 first decorative zone. It suffices, for example, to make a first diffusing zone wider than the illuminating zone or a first decorative zone overflowing beneath the main part.
• the first illuminating zone may be peripheral and the reflector surround all or part of the glazing unit by a lateral part carrying the diodes, and preferably comprise a return in contact with the main edge of the front face.
• the panel according to the invention may comprise another group of diodes, another first illuminating zone in particular along an edge opposite or adjacent to the edge of the first selected peripheral illuminating zone.
• the reflector can be in one piece thus serving for several illuminating areas, and even be carrying several groups of diodes extending along several or all edges of the glazing.
• the reflector is for example a monolithic piece, including a frame.
• the first illuminating area is peripheral on a first edge of the front face
• the panel comprises a second group of diodes and a second peripheral illuminating area on a second edge of the front face opposite to the first edge and provided with second diffusing means associated with the glazing
• the reflector preferably comprises a central connecting part, facing the decorative zone, between a so-called main part of the reflector comprising the main reflecting surface and another so-called main part with a second reflecting surface main opposite the second group of diodes adapted to directly receive so-called central rays of said second group of diodes including the first main beam and return (by reflection) on the second diffusing means in an area between the diodes of the second group and the second main reflecting surface.
• the decorative zone is peripheral and the first illuminating zone is more central, the panel comprises a frame surrounding all or part of the glazing and preferably having a return in contact with the edge of the front face. .
• the first illuminating zone (includes a curved longitudinal edge, in particular a circle, and the main reflecting portion is also curved (in its length), in particular delimiting said curved longitudinal edge in (arc of) circle.
• the first decorative area is a central circle or the opposite.
• the panel according to the invention may comprise this single single glazing.
• the panel according to the invention is simple, lightweight, easy to handle, to install and compact.
• the first illuminating area covers a fraction of the surface (functional, visible) of the glazing, for example a zone (band ...) illuminating rather narrow in the case of a large glazed area.
• the (maximum) width (constant or variable width) of the first illuminating zone may preferably be less than 200 mm or even less than or equal to 100 mm, in particular to leave an important decorative zone surface.
• the first illuminating zone may be peripheral, in particular along a panel edge and the more central decorative zone, then further from the diodes than the decorative zone.
• the first illuminating area may be in a given area of the panel, which is for example a central area, and the decorative area may be more peripheral.
• the first illuminating zone (which is preferably the width of the first diffusing means) is of width less than 30% of the width of the glazing,
• the vertical projection of the width of the reflector on the glazing is of width less than 30% of the width of the glazing
• the first illuminating zone is at least 50 mm long and in particular substantially equal to the length of the lateral or longitudinal edge of the corner glazing (square, rectangular, etc.),
• the length of the reflector 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 reflector
• the first support (PCB) is less than 1 cm thick or even 5 mm thick.
• 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,
• 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 associated with the first diffusing means has a light transmission of less than 85%, preferably between 40 and 85%.
• the diffusing means are preferably arranged in the thickness of the glass and / or on the rear face, they are thus protected and the front face preferably in contact with the external environment can be smooth and easily cleaned.
• the first diffusing means may be more preferably associated with the rear face and for example the first diffusing means are 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.
• 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 can have a TL of at least 70%, or even at least 80%.
• the glazing can be made of clear or even extra-clear mineral glass.
• reference WO04 / 025334 can be referred to for the composition of an extra-clear glass.
• SAINT-GOBAIN's Diamant® glass, SAINT-GOBAIN's Diamant Solaire® glass, Saint-GOBAIN's Albarino® glass (textured or smooth), Pilkington's OptiWHITE® glass, Schott's B270® glass can have a TL of at least 70%, or even at least 80%.
• the glazing can be made of clear or even extra-clear mineral glass.
• reference WO04 / 025334 can be referred to for the composition of an extra-clear glass.
• 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 panels installed in places imposing strict hygiene,
• pyramidal type printed glass such as Albarino® glass from the company SAINT-GOBAIN GLASS, pyramid-shaped reliefs being established on the external face of the substrate facing the external environment of the luminaire,
• the first diffusing means can then be on the lamination interlayer or on or in the additional glazing
• the panel according to the invention may include any other functional coating (anti-scratch, anti-soiling ).
• the lighting of the first illuminating area can be decorative, architectural, signaling or display.
• the decorative and illuminating panel can be intended in particular:
• the building as a ceiling lamp, wall tile; a partition,
• transport vehicle including public transport, train, metro, tramway, bus or water or air vehicle (plane),
• a window of street furniture such as a bus shelter, a railing, a display, a window, a shelf element,
• Figure 1a shows a schematic cross-sectional view of a decorative panel and lighting emitting diodes 100 in a first embodiment of the invention
• Figure 1 b is a partial schematic perspective view of the reflector profile and illuminating the decorative panel 100 of Figure 1a;
• Figure 1 c is a schematic top view of the decorative panel 100 and lighting of Figure 1;
• FIG. 1d is a schematic rear view of another reflector section 3 integrated into a decorative panel and illuminating light emitting diode according to the invention.
• Figure 1 e is a partial schematic perspective view of the profiled reflector of Figure 1 d;
• Figure 1f is a schematic top view of a decorative and illuminating panel with the profiled reflector of Figure 1e;
• FIG. 2a shows a schematic cross-sectional view of a decorative panel and illuminating light emitting diode 200 in a second embodiment of the invention
• Figure 2b is a schematic perspective view of the reflector profile and illuminating the decorative panel 200 of Figure 2a;
• Figure 2c is a schematic top view of the decorative panel and lighting 200 of Figure 2a;
• FIG. 3a shows a schematic cross-sectional view of a decorative panel 300 and lighting emitting diodes in another embodiment of the invention
• Figure 3b is a partial schematic perspective view of the reflector profile and illuminating the decorative panel 300 of Figure 1a;
• Figure 3c is a schematic top view of the decorative panel and lighting 300 of FIG 3a;
• 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 single glazing 1 flat mineral glass, 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 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 along the second longitudinal edge of the pane 100, arranged on the side of the rear face, diodes aligned and regularly distributed on 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 radius F, said first main ray, substantially parallel to the first face January 1.
• the diodes of said group are chosen with the same (only) main direction of emission F.
• 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 mid-height of 60 °.
• the adjacent diode bundles of the first group overlapping on the surface of the first scattering means.
• 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 to create a peripheral lighting band 40, of given width and having throughout its width means of diffusion 4 of the light emitted by the diodes 2 associated with the glazing, 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 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:
• a diffusing layer made by screen printing an enamel or a diffusing layer such as made for Smoothlite® glass by SAINT-GOBAIN GLASS, the screen printing having the advantage of making it possible to obtain all type of design with well-defined boundaries, or alternatively in the thickness of the glass, by laser engraving.
• 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.
• first two illuminating strips 40 may be identical or distinct in their shape, their width, their color, their nature (different diffusion means, etc.).
• each first illuminating strip 40 is for example less than 200 mm or even 100 mm.
• a central decorative area 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 decorative zone colored or translucent.
• the panel 100 further comprises the side of the rear face 1 1, a first section forming a reflector 3 of the light coming from said first group of diodes (2), which is an elongate metal monolithic piece, comprising:
• a main reflecting surface facing the group of diodes, oblique with respect to the rear face and able to directly receive so-called central beams of said first group of diodes including the first main beam F and to return them (by reflection) to the first diffusing means in an area between the diodes and the main reflective surface.
• a so-called upper reflective surface 32 joined to the main reflecting surface 30, facing the rear face 1 1 and able to receive directly so-called upper lateral spokes B of said first group of diodes deviating from the rear face 1 1 and to send them back,
• the extent of the main reflective surface 30 and the upper reflective surface 32 being such that at least 80%, upper side rays are reflected towards the first diffusing means 4.
• the reflector 3 comprises a first reflection limit zone of the emitted rays
• A forming an angle ⁇ 1 with the main direction of emission F, the extent of the first diffusing means 4 being such that the majority, or even at least 80%, so-called lateral radii lower than ⁇ 1, and towards the rear face 1 1 are diffused by the first diffusing means 4.
• the reflective section 3 is made of metal, for example made of anodized aluminum, in particular of thickness less than or equal to 3 mm or even to 1 mm, which comprises:
• main portion 30 which is elongate and oblique with respect to the rear face, comprising the main reflecting surface 30, forming an acute angle of 20 ° to 60 °, in particular 30 to 50 ° with respect to the rear face, extending until contact with the rear face 1 1 or until a maximum of a clearance of less than 5 mm with the rear face,
• a so-called upper, elongate portion 32 extending the main part, opposite the rear face 11, comprising the upper reflecting surface 32.
• the profile forming a reflector 3 also comprises a so-called lateral portion 31 elongated, extending the upper portion 32 comprising the upper reflective surface, in particular flat and substantially normal to the rear face January 1, and carrier of the diodes 2 on their support PCB 20.
• the diodes 2 are soldered on tracks which are electrically insulated from the metallic material of the PCB support 20.
• the metallic material of the support being heat conducting, the support could be directly pressed against the first thermal conductive base to obtain the heat dissipation. Fixing the support to the base can then be performed for example by clipping and / or screwing.
• 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 reflector. 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.
• first face 1 For each reflector 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, from the end of the main part 30, selected from a mirror reflecting layer, a diffusing zone, especially frosted glazing, a decor layer, including colored, and preferably including the same type as the first diffusing means or the decorative area.
• masking means 61, 62 said before, from the end of the main part 30, selected from a mirror reflecting layer, a diffusing zone, especially frosted glazing, a decor layer, including colored, and preferably including the same type as the first diffusing means or the decorative area.
• the diffusing zone beyond the illuminating zone or that the decorative zone overflows below the main part.
• the panel 100 is fixed to a wall 1 '(wall, ceiling, partition ...) for example by the side part forming an entourage of the panel with a return 33 on the front face.
• Each reflector section 3 has a fixing surface to the wall 1 '(wall, ceiling, partition ...) by screws 5' arranged on the rear face of the upper reflecting part.
• the surface of the glazing 1 is 600 ⁇ 600 mm and is an extra-clear glass 2.9 mm thick,
• each first illuminating strip 40 mm 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 15 mm
• the diodes have an individual power of 0.3W (approximately), an efficiency of at least 40 Im / W (lumens / Watt),
• 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, generates a dissipation of the heat released by the LEDs, helping to guarantee the luminous efficiency.
• a ceiling lamp 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),
• a street furniture panel such as a bus shelter, a balustrade, a display, a showcase,
• 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;
• Figure 1d is a rear schematic view of another reflector profile 3 integrable into a decorative panel and illuminating LEDs according to the invention.
• the decorative zone 60 is a round and the main reflecting portion 30 describes a ring.
• This reflective section can be used a metal sheet that is drilled in the center and that is bent and / or that is obtained by molding.
• Figure 1 e is a partial schematic perspective view of the reflector section of Figure 1 d.
• FIG. 1f is a schematic top view of a decorative and illuminating panel with the reflector profile of FIG. 1e showing the central decorative zone in the round and the peripheral illuminating zone 40.
• Figure 2a shows a schematic cross-sectional view of a decorative and illuminating LED panel 200 in a second embodiment of the invention.
• the panel 200 differs from the panel 100 in particular in that the reflector preferably comprises a central connecting portion 34, facing the decorative zone 60.
• the diffusing means 4 are made by adding a diffusing layer.
• the decorative zone is a colored layer 6 '.
• Figure 2b is a schematic perspective view of the reflective section of the decorative and illuminating panel 200 of Figure 2a.
• FIG. 2c is a schematic top view of the decorative and illuminating panel 200 of FIG. 2a showing the central decorative zone 40 and the peripheral illuminating zones 60 and the return of the reflector 33.
• Fig. 3a is a schematic cross-sectional view of a light-emitting diode LED decorative and decorative panel 300 in another embodiment of the invention.
• the panel 200 differs from the panel 100 in particular in that:
• the illuminating zone is central and there are two peripheral decorative zones, involving the displacement of the profile in the center,
• Figure 3b is a partial schematic perspective view of the reflective section of the decorative and illuminating panel 300 of Figure 1a.
• FIG. 3c is a schematic top view of the decorative and illuminating panel 300 of FIG. 3a showing the illuminating strip 40, the decorative strips 60 and the return of the frame 73.
• FIGS. 4a to 4h show other examples of reflector sections with or without a carrier part of the diodes.
• the main part 30 has a spaced-apart end facing the rear face which is curved 30 'towards the direction opposite to the diodes 2.
• the central reflecting plane portion 32 and the upper reflecting plane portion are of concave cross section.
• the central reflecting plane portion 32 is of concave cross section.
• the reflector is a triangular cross-section piece with a main reflective surface 30 and an upper planar reflective surface 32.

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• Physics & Mathematics (AREA)
• General Physics & Mathematics (AREA)
• Engineering & Computer Science (AREA)
• Theoretical Computer Science (AREA)
• Planar Illumination Modules (AREA)
• Illuminated Signs And Luminous Advertising (AREA)
• Fastening Of Light Sources Or Lamp Holders (AREA)
• Non-Portable Lighting Devices Or Systems Thereof (AREA)

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Cited By (10)

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Citations (6)

• 2010
  • 2010-09-02 FR FR1056978A patent/FR2964446B1/fr active Active
• 2011
  • 2011-08-30 CN CN201190000840.8U patent/CN203633879U/zh not_active Expired - Fee Related
  • 2011-08-30 WO PCT/FR2011/051985 patent/WO2012028819A1/fr active Application Filing
  • 2011-09-01 TW TW100131511A patent/TW201243213A/zh unknown

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