Classifications

• • E—FIXED CONSTRUCTIONS
  • E04—BUILDING
  • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
  • E04B9/00—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation
  • E04B9/32—Translucent ceilings, i.e. permitting both the transmission and diffusion of light
• • E—FIXED CONSTRUCTIONS
  • E04—BUILDING
  • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
  • E04B9/00—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation
  • E04B9/30—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation characterised by edge details of the ceiling; e.g. securing to an adjacent wall
• • E—FIXED CONSTRUCTIONS
  • E04—BUILDING
  • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
  • E04B9/00—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation
  • E04B9/30—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation characterised by edge details of the ceiling; e.g. securing to an adjacent wall
  • E04B9/303—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation characterised by edge details of the ceiling; e.g. securing to an adjacent wall for flexible tensioned membranes
• • 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
  • F21V1/00—Shades for light sources, i.e. lampshades for table, floor, wall or ceiling lamps
  • F21V1/14—Covers for frames; Frameless shades
• • 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
  • F21V19/00—Fastening of light sources or lamp holders
  • F21V19/001—Fastening of light sources or lamp holders the light sources being semiconductors devices, e.g. LEDs
  • F21V19/003—Fastening of light source holders, e.g. of circuit boards or substrates holding light sources
  • F21V19/004—Fastening of light source holders, e.g. of circuit boards or substrates holding light sources by deformation of parts or snap action mountings, e.g. using clips
• • 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
  • F21V7/00—Reflectors for light sources
  • F21V7/0025—Combination of two or more reflectors for a single light source
  • F21V7/0033—Combination of two or more reflectors for a single light source with successive reflections from one reflector to the next or following
  • F21V7/0041—Combination of two or more reflectors for a single light source with successive reflections from one reflector to the next or following for avoiding direct view of the light source or to prevent dazzling
• • 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
  • F21V7/00—Reflectors for light sources
  • F21V7/04—Optical design
  • F21V7/05—Optical design plane
• • 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
  • F21V7/00—Reflectors for light sources
  • F21V7/22—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors
  • F21V7/24—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors characterised by the material
• • E—FIXED CONSTRUCTIONS
  • E04—BUILDING
  • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
  • E04B9/00—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation
  • E04B9/04—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation comprising slabs, panels, sheets or the like
  • E04B2009/0492—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation comprising slabs, panels, sheets or the like with fabrics tensioned on frames
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F21—LIGHTING
  • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
  • F21S8/00—Lighting devices intended for fixed installation
  • F21S8/02—Lighting devices intended for fixed installation of recess-mounted type, e.g. downlighters
  • F21S8/026—Lighting devices intended for fixed installation of recess-mounted type, e.g. downlighters intended to be recessed in a ceiling or like overhead structure, e.g. suspended ceiling
• • 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
  • F21V7/00—Reflectors for light sources
  • F21V7/005—Reflectors for light sources with an elongated shape to cooperate with linear light sources
• • 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
  • F21Y2103/00—Elongate light sources, e.g. fluorescent tubes
• • 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]

Definitions

• the invention relates to a false luminous wall device intended to be fixed on a wall such as a wall or a ceiling.
• the invention thus relates to the technical field of false ceilings and false walls stretched behind which is a light source.
• False-wall devices comprising a stretched fabric fixed to the base of a frame, generally parallelepipedic, which consists of the association of profiles which form each of its sides.
• the fabric comprises a fastening means fixed along its periphery.
• the fabric may be provided with a peripheral edge in the form of a harpoon.
• Another attachment means consists of clips inserted in the profiles and in which the fabric can be hooked by pinching.
• the stretched fabric is for example made of textile or a synthetic polymer material, such as polyvinyl chloride (PVC).
• a light source illuminates the canvas, which itself is translucent, so that the light can spread through the fabric and thus illuminate the room in which the false-wall device is installed.
• the assembly canvas / frame is placed in an external frame, which is provided with side walls, a bottom, and lighting means.
• the frame is attached to the outer frame, and the light scattered by the lighting means passes through the translucent web.
• the translucent fabric generally has a transmittance of the order of 50%, which generates a loss of 50% of light intensity.
• the light source can be removed from the canvas, which weakens the light intensity arriving on the canvas.
• the profiles forming the frame generally have a rectangular cross section, with an upper part directed towards the wall and a lower part directed towards the fabric.
• the fabric generally covers the entire lower part of the profiles.
• a known solution, disclosed in EP 2 494 121, is to use profiles having a cross section in the form of a right triangle whose tip is directed towards the canvas, and whose hypotenuse is the part or internal face of the frame. In this way, only the point directed towards the canvas can still be visible and light can pass along the hypotenuse.
• This solution improves the illumination of the perimeter of the fabric, but still does not provide a uniform illumination over the entire surface of the fabric. Indeed, the profile itself, even triangular, always creates a shadow on the canvas, resulting in a shaded area around the perimeter of the canvas on the underside, with a lower light intensity than the rest of the the Web.
• the present invention aims to overcome the various drawbacks mentioned above, by means of a device for increasing the light intensity at the output of the fabric in a general manner, and for homogenizing the light intensity on the totality of the canvas area by eliminating the traditional shaded peripheral area.
• the device must be simple to implement, and fit as well to a false ceiling, a false wall, or a light box.
• a false luminous wall device comprising: a chassis consisting of at least one profile, said chassis comprising an upper part directed towards a wall to be covered of the wall or ceiling type, and a lower part; - a stretched diffused canvas hooked to the chassis and stretched at the bottom of the chassis;
• Lighting means arranged between the wall and the fabric, diffusing a light in the direction of the fabric.
• This device is characterized primarily in that the frame is provided with means for increasing the light intensity of the lighting means.
• the main idea of this invention is to use the frame itself to increase the light intensity at the output of the fabric, instead of playing directly on the parameters of the lighting means as was practiced in the prior art.
• said means for increasing the luminous intensity consist of a reflective surface able to reflect incident rays coming from the illumination means towards the fabric.
• the invention is therefore focused on optical principles, including the principle of total reflection, using the reflective surface of the frame. Depending on the orientation of this surface, the reflection properties of this surface, the shape of this surface, and the orientation of the incident light rays from the lighting means, it is possible to increase the luminous intensity. out of canvas.
• each profile has an upper face disposed facing the wall, an outer face oriented perpendicularly to the upper face, and an inner face disposed facing the outer face, said reflecting surface being located on said inner face of at least one profile :
• the section of the profile may be rectangular or triangular, for example, the reflective surface is preferably located on the inner face of all profiles: in this way, the light is reflected by the entire frame homogeneously.
• said reflective surface has a reflectance of the order of 100% and a transmittance of the order of 0%: this means that there is total reflection on the surface, no light beam passes through it. It may for example be aluminized.
• said reflective surface consists of a paint layer having reflective properties applied to said inner face,
• said reflective surface consists of a reflective plate secured to said inner face: this plate can be glued or clipped for example.
• said inner face of the profile comprises a recess able to accommodate said reflective plate: if the width of the plate is smaller than the width of the inner face of the profile, this recess makes it possible to maintain a smooth interior surface, thus without asperity, at the level of profile, said reflecting plate consists of a mirror.
• the inner face directly connects a longitudinal edge of the upper face to a longitudinal edge of the outer face: in this case, the profile has three faces only.
• the inner face consists of a flat surface: in this case, the profile section is triangular, the hypotenuse corresponding to the inner face.
• This flat surface may include a break.
• the inner face consists of a concave surface, with a rounded facing towards the inside of the device: in this case, the section of the profile consists of a quarter of an oval or a quarter of a round for example.
• the concave surface may have a more complex shape depending on the desired reflection.
• the frame creates a shaded area on the web at its peripheral perimeter located opposite the chassis, said reflective surface being configured to redirect a portion of the light rays from the illumination means to said shaded area to balance the level of brightness over the entire surface of the fabric, said lighting means consist of at least one light source of the LED type: other types of light source can be used, such as fluo, halogen, etc.
• said lighting means consist of a plurality of light sources distributed homogeneously within the device: this distribution is calculated in such a way that the light is projected homogeneously over the entire surface of the fabric, so that there are no areas brighter than others.
• said fabric consists of a translucent diffusing fabric, preferably of textile or PVC, having a light transmission rate of at least 50%.
• a sheet is inserted between the fabric and the wall, and also fixed to the frame: it can have a function of protection against insects by preventing them from coming to be deposited on the canvas in visible sub-face, or it can have an acoustic function to improve the acoustic performance of the device, or to have a diffusion function to improve the light distribution on the web, etc.
• This sheet is translucent translucent, preferably textile or PVC, with a light transmission rate of at least 50%.
• the fabric completely covers the lower part of the frame: in this way, the structure itself of the frame is not visible, which improves the aesthetics of the device.
• the invention also relates to the use of this false light wall device, as described above, for the production of light boxes.
• FIG. 6 is an enlarged view of the light path through a part of the false-wall device according to the invention.
• FIG. 7 schematically shows the false-wall device according to the invention.
• - Figures 8 to 1 1 show different shapes of profile section for the false wall device according to the invention
• - Figure 12 shows the integration of a reflective plate on the inner face of a profile.
• Figure 1 illustrates a possible example of a false-wall device.
• This device contains a frame 1 formed by a set of profiles having a complex structure. It is attached to the vertical walls of a room, by screwing or by any other means of attachment.
• the frame has four sections extending over the four walls of the room.
• a fabric 2 is stretched between these four sections, at the lower part of the frame, that is to say the distal portion of the ceiling.
• This fabric 2 is provided at its peripheral edges with a means of hooking in the form of harpoon 5.
• Each section comprises, in the lower part, a groove 16 having a U-shaped section and being delimited by two side walls 17, 18 and a bottom wall 19.
• the internal face of one of the side walls has a shoulder 20 hooked longitudinally .
• the shoulder 20 is formed on the internal face of the side wall 17.
• a ring can be sewn on the peripheral edges of the fabric 2. This ring has a boss allowing its attachment with the shoulder of the groove.
• lighting means are provided on the ceiling, and the stretched fabric 2 located under the lighting means is diffusing in order to allow the light to pass.
• this diffusing fabric 2 is translucent, with a light transmission rate of at least 50%. It can be made of textile or PVC, or any other suitable material.
• This sheet 3 is also diffusing, translucent, with a transmission rate of at least 50% light, to let as much light as possible.
• This sheet 3 can fulfill several functions, namely:
• a protective function in order to prevent the insects from coming to be deposited on the fabric 2 on the visible underside;
• an acoustic function with properties that make it possible to increase the acoustic performance of the parts, for example as regards soundproofing;
• This sheet 3 is stretched and fixed to the frame 1 in the same way as the fabric 2, but at another groove 21 located in the upper part of the frame 1, so proximal to the ceiling.
• the sheet 3 is provided at its peripheral edges with a harpoon 6 adapted to come into the groove 21.
• This groove 21 has a U-shaped section and is delimited by two side walls 23, 24 and a bottom wall 25.
• the harpoon 6 is held in the groove 21 thanks to a shoulder 22 located on the internal face of the side wall 23.
• the side wall 24 constitutes the upper wall of the frame 1.
• This wall 24 projects a shadow 7 on the fabric 2 in the vicinity of its peripheral edges.
• Figure 2 shows a light box adapted to be suspended by means of hooks 15 to a ceiling.
• This box comprises a frame 1 of rectangular shape, also consisting of an assembly of four sections.
• the profiles have a shape different from those of Figure 1, but their function remains the same. Indeed, they serve to stretch the fabric 2. These profiles have a rectangular section.
• the fabric 2 completely covers the lower part of the frame, then goes up along its outer side so that its harpoon 5 is fixed in a groove located in the upper part.
• FIG. 3 shows an example of lighting means 8, consisting of a neon fixed to the ceiling 4.
• any kind of lighting means 8 is within the scope of the present invention, in particular ceiling lights or LED slabs, less energy-saving and diffusing less heat, which is advantageous from a safety point of view to avoid the risk of fire and degradation of the fabric 2.
• the fabric 2 is stretched at the lower part of the frame 1, and a sheet 3 is stretched at the level of the upper part of the frame 1.
• these frames / canvas assemblies are adapted to cover a wall of a room, so being positioned vertically, or a ceiling of a room, so being positioned horizontally.
• the frame 1 can be fixed directly to the ceiling via rails, or indirectly by hanging, or be fixed to the wall by screwing as in Figure 3.
• the frame / canvas assembly can also be summarized as a light box covering only one part of a ceiling or wall, so decorative. All possible configurations are included within the scope of this invention.
• the device according to the invention is shown in detail with a profile having a triangular section.
• the profile comprises an upper face 9 directed towards the wall to be covered, an outer face 10, and an inner face 1 1 facing the outer face 10, the inner faces 1 1 and outer 10 is joining at the tip 14 of the triangle.
• the fabric 2 covers this point 14 and is hooked into the profile at a groove 26, equivalent to the groove 16 of Figure 1, made in the outer face 10.
• a groove 27, made in the inner face in the upper part of the profile, is provided to optionally accommodate a sheet 3 protection.
• the upper face 9 of the profile projects a shadow 7 on the periphery of the fabric 2, as explained above.
• the inner face 1 1 is coated with a layer allowing it to be reflective.
• this reflecting surface 28 reflects the light from the lighting means 8.
• it is an LED panel, so a multi-source device.
• the reflective layer can be obtained by applying a specific layer of paint on the inner face 1 1, or by hanging a reflective plate on the inner face January 1, or by fixing a mirror on the inner face January 1, or by any other means to obtain a reflective surface 28 with a total reflection, that is to say with a reflectance of the order of 100% and a transmittance of the order of 0%.
• Figure 6 shows different trajectories of light rays from the ceiling lamp.
• the inner face 1 1 has a break separating a first section 1 1 a of a second section 1 1 b, the two sections 1 1 a and 1 1 b thus having a different angle of reflection.
• the incident rays i10, i1 1, i12 also arrive on the reflecting surface 28, at a portion 11b of the inner face 11 having an angle different from the portion 11a of the inner face 11 where the rays i4 to i9.
• This section 11b therefore reflects the light with a different angle, thus forming the rays r10, r1 1, r12 which arrive on the fabric 2, then which form the refracted rays t10, t1 1, t12 at the output of the fabric 2.
• These rays also arrive in the shadow zone 7, while they were stopped at the level of the profile in the prior art.
• This reflective surface 28 thus makes it possible to homogenize the distribution of the light on the fabric 2, in order to improve its aesthetics.
• this reflecting surface 28 also makes it possible to increase the level of lighting generally on the fabric 2.
• the incident rays i4, i5, i6 are reflected by the reflective surface 28, forming rays r4, r5, r6 projected onto the fabric 2 outside the shadow zone, that is, that is to say in the central zone of the fabric 2. These rays are then slightly refracted, and form the refracted rays t4, t5, t6 at the output of the fabric 2.
• These incident rays i4, i5, i6 were stopped by the profile in l prior art, and are now projected on the canvas 2, thus creating a general increase in light output at the output of the fabric 2, even outside the shadow zone 7. This is better represented in FIG.
• the inner face January 1 can take various forms.
• the inner face 1 1 of the profile comprises a break 1 1c separating two flat portions 1 1a and 1 1b, thus taking the form illustrated in FIGS. 6 and 7.
• the inner face 1 1 is concave shape, with the rounded facing inwardly of the device.
• the rounding corresponds to a quarter of an oval.
• the inner face 1 1 is concave, with the rounded facing inwardly of the device.
• the rounding corresponds to a quarter of a circle.
• a recess 29 may be formed on the inner face 1 1 to accommodate the plate 28.
• the width of the recess is substantially equal to the width of the plate 28, so that the external appearance the profile, at the inner face, is completely smooth, so without asperity. This makes it possible to correctly reflect the light.
• the reflecting surface 28 can be implemented on all the examples described in FIGS. 1 to 5.
• the internal face 1 1 of the frame 1 (a fortiori profiles) can be provided with a reflecting surface 28.
• the luminous intensity at the output of fabric 2 will be increased in general.
• the light will be distributed homogeneously over the entire surface of the fabric 2, even at the shading area 7, except for the device in FIG. 2 where the shading zone 7 will remain on the width the lower part of the chassis 1 in contact with the fabric 2.
• the frame 1 forms a rectangle with four sections so as to take the traditional rectangular shape of a ceiling or a wall or a box.
• a frame having a circular or oval shape, with one or more shaped profiles can be envisaged.

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• Engineering & Computer Science (AREA)
• Architecture (AREA)
• General Engineering & Computer Science (AREA)
• Physics & Mathematics (AREA)
• Electromagnetism (AREA)
• Civil Engineering (AREA)
• Structural Engineering (AREA)
• Non-Portable Lighting Devices Or Systems Thereof (AREA)
• Planar Illumination Modules (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=57209530

Family Applications (1)

Country Status (7)

Families Citing this family (7)

Family Cites Families (13)

• 2016
  • 2016-07-06 FR FR1656506A patent/FR3053709B1/fr active Active
• 2017
  • 2017-06-16 CN CN201780052749.2A patent/CN109790713A/zh active Pending
  • 2017-06-16 AU AU2017293056A patent/AU2017293056A1/en not_active Abandoned
  • 2017-06-16 JP JP2018566916A patent/JP2019519899A/ja active Pending
  • 2017-06-16 EP EP17730176.9A patent/EP3482012A1/de not_active Withdrawn
  • 2017-06-16 WO PCT/EP2017/064742 patent/WO2018007125A1/fr not_active Ceased
  • 2017-06-16 US US16/315,402 patent/US10697176B2/en not_active Expired - Fee Related
• 2022
  • 2022-12-05 AU AU2022283633A patent/AU2022283633A1/en not_active Abandoned

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