EP3312506A1 - Bande de diodes électroluminescentes modulaire, entièrement coulée, flexible et son procédé de fabrication - Google Patents

Bande de diodes électroluminescentes modulaire, entièrement coulée, flexible et son procédé de fabrication Download PDF

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Publication number
EP3312506A1
EP3312506A1 EP17020490.3A EP17020490A EP3312506A1 EP 3312506 A1 EP3312506 A1 EP 3312506A1 EP 17020490 A EP17020490 A EP 17020490A EP 3312506 A1 EP3312506 A1 EP 3312506A1
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EP
European Patent Office
Prior art keywords
profile
light
emitting diode
flexible
wall
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP17020490.3A
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German (de)
English (en)
Inventor
Stefan Eistetter
Hans Astrup
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Barthelme Nicola
Cld Germany GmbH
Original Assignee
Barthelme Nicola
Cld Germany GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Barthelme Nicola, Cld Germany GmbH filed Critical Barthelme Nicola
Publication of EP3312506A1 publication Critical patent/EP3312506A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S4/00—Lighting devices or systems using a string or strip of light sources
    • F21S4/20—Lighting devices or systems using a string or strip of light sources with light sources held by or within elongate supports
    • F21S4/22—Lighting devices or systems using a string or strip of light sources with light sources held by or within elongate supports flexible or deformable, e.g. into a curved shape
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S2/00—Systems of lighting devices, not provided for in main groups F21S4/00 - F21S10/00 or F21S19/00, e.g. of modular construction
    • 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
    • F21V15/00—Protecting lighting devices from damage
    • F21V15/01—Housings, e.g. material or assembling of housing parts
    • F21V15/013—Housings, e.g. material or assembling of housing parts the housing being an extrusion
    • 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
    • F21V21/00—Supporting, suspending, or attaching arrangements for lighting devices; Hand grips
    • F21V21/005—Supporting, suspending, or attaching arrangements for lighting devices; Hand grips for several lighting devices in an end-to-end arrangement, i.e. light tracks
    • 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
    • F21V23/00—Arrangement of electric circuit elements in or on lighting devices
    • F21V23/001—Arrangement of electric circuit elements in or on lighting devices the elements being electrical wires or cables
    • F21V23/002—Arrangements of cables or conductors inside a lighting device, e.g. means for guiding along parts of the housing or in a pivoting arm
    • 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
    • F21V31/00—Gas-tight or water-tight arrangements
    • F21V31/04—Provision of filling media
    • 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
    • F21Y2103/10—Elongate light sources, e.g. fluorescent tubes comprising a linear array of point-like light-generating elements
    • 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, according to claim 1, a verkettbares, vollvergossenes, flexible light emitting diode strip. Furthermore, the invention relates, according to claim 13, a process for its preparation.
  • Light tubes usually flexible type, especially for decoration purposes and promotional purposes have long been known.
  • two cables are routed as a plus rail and a minus rail, and between the plus rail and the minus rail, at least two or more groups of at least two or more series-connected LEDs arranged in parallel are electrically connected to each other and to a dropping resistor.
  • All LEDs are directed with their light exit side in one direction and individual sections within the plastic tube are provided with additional pieces of tubing, preferably a shrink tube, between the LEDs, which pieces of tubing, the plus rail, the negative rail and the connecting cable between the LEDs and better fix the LEDs and the connecting wires within the light tube allow, without the flexibility of the light tube is obstructed.
  • the cavities within the plastic tube are filled with a transparent, elastic plastic, whereby a further barrier effect against penetrating moisture is achieved.
  • the filament which consists of a plastic body, at least one groove is milled, in which the light tube inserted as a light source and with a Resin is poured or glued. To realize a wider light propagation, the groove walls of the groove widen outwards.
  • a flexible transparent light tube made of plastic, in which the tube wall of the flexible transparent tube is connected to a strand-shaped bendable and after bending the shape retaining reinforcing element.
  • the reinforcing element is preferably integrated in the tube wall and preferably has a substantially circular cross-section. In the manufacture of such a transparent tube, the reinforcing element can be inserted directly into the tube wall during the extrusion of the tube. Inside the tube, a plurality of small light-emitting elements are arranged, which are connected via electrical connection wires, which end in a plug and are supplied with electrical voltage.
  • a flexible light tube which has at least two parallel copper wires for power supply, a flexible opaque but translucent strip, multiple boards equipped with multiple LEDs and a light-transmissive molded part, which is strip-shaped.
  • the strip is quadrangular in cross-section and has a longitudinally formed through-hole and a side of the through hole arranged slot, which is provided for the assembly of the boards.
  • Each board has a contact terminal at each of its two ends. The boards are inserted through the slot in the through hole of the strip, wherein the contact terminals of the boards are electrically connected to the copper wires.
  • the light emitted by the juxtaposed LEDs is emitted to the outside through the molded part, which has a surface that is semicircular in cross-section to the outside. In this case, the emitted light beam of adjacent LEDs overlaps in an overlapping zone.
  • Plastic cover provided consisting of opaque PVC, which is located below the molding on both sides and at the bottom of the strip.
  • the boards provided with multiple LEDs are enveloped by a strip which is produced by injection molding from white or differently colored plastic.
  • the strip has at its upper end a notch and a longitudinally formed slot, which serves to bring the board into the through hole of the strip can.
  • the through hole in the product has the risk of condensation / capillary effect.
  • the notch may additionally be provided with a reflective film.
  • the strip is made of opaque plastic.
  • a plurality of fixing elements are provided for fastening the light tube to a plate. In the manufacturing process, only the extrusion is used; an inspiration for a potting is the DE 20 2005 002 425 U1 not removable.
  • light-emitting diode bands - also of a flexible nature - have long been known.
  • an LED strip is known, which has a plurality of light-emitting diodes, which are arranged in a row and are cast in a flexible elongated housing.
  • the housing forms a, in particular U-shaped or V-shaped, mold comprising two upwardly (z-direction) extending side walls, ie with two upwardly to the open side of the mold extending side walls, in a lower region , in particular by a floor, are interconnected.
  • the light-emitting diodes are introduced into the mold;
  • the mold is then filled with potting compound.
  • the casting mold becomes a marking, ie, a marking edge extending horizontally through at least one side wall, wherein the wall portion of the side wall adjoining immediately above the marking edge is vertically aligned or further than the marking edge in the interior (the mold) protrudes (also to form an at least partially "unsteady" transition from an upper wall portion to a lower wall portion of the side wall), filled with a first potting compound. From the marking the mold is filled with a second potting compound. In this case, further potting compounds can be arranged above or below the marking.
  • a horizontal boundary line between the first and second potting compound forms, wherein the first potting compound forms the bottom of the casting mold for the second potting compound after curing.
  • the first potting compound is in particular a transparent potting compound; the second potting compound is in particular an opaque potting compound.
  • casting compounds are basically polyurethane (PU) materials.
  • the marking is now formed by at least one marking edge extending horizontally on one of the side walls, in particular on both of the side walls. The wall portion of the side wall adjoining immediately above the marking edge is vertically aligned or protrudes farther than the marking edge into the interior space.
  • the immediately following above the marking edge wall portion of the side wall protrude further into the interior of the mold as an immediately below the marking edge subsequent portion of the side wall.
  • the side wall is mandatory in one piece and good adjustability occurs in particular when a horizontally extending marker edge is arranged on both side walls, wherein both marker edges are arranged on the same vertical position (z-direction).
  • adjacent light-emitting diodes are articulated to one another in three degrees of freedom.
  • a cable may include multiple cable lines.
  • a flexible LED cable lighting with a flexible and flat insulating body with a longitudinal slot and a plurality of recesses for each connection to the longitudinal slot known. Furthermore, at least two wires for power supply are embedded in parallel in the insulating body and a plurality of strands are provided, each comprising a plurality of LEDs and at least one connected in series and arranged in the longitudinal slot resistor, which is smaller than the LEDs.
  • the LEDs are each mounted in the recesses, which are slightly larger than the LEDs, and electrically connected between the at least two wires.
  • Each LED is mounted on a printed circuit board, which is electrically connected via conductors with the at least two wires by soldering or forming two prongs, that is electrically connected in parallel. This allows the LED cable lighting to be cut to desired lengths.
  • a protective layer covers the insulator and the LEDs, the protective layer being made of translucent material or semi-translucent material, in particular polyvinyl chloride (PVC).
  • PVC polyvinyl chloride
  • a two-component adhesive is applied to the protective layer. The serial connection of the strands by means of radial prongs, which are pushed into the insulating body of a segment and thus electrically connected to the at least two wires. The joint is sealed with adhesive and covered with a hose.
  • the packaged LED module includes a module having at least one LED disposed thereon, a one-piece housing having a receptacle for the module, a substantially optically transmissive region allowing outward projection of light from the LED and an opening.
  • a Verg tellblockierstoff which is provided or arranged between the module and the housing, is designed such that it prevents the penetration of a prevented over the opening in the housing equipped with the module potting compound (by means of a two-component or multi-component spray system) in a region between the LED and the substantially optically transmissive region, by removing the capillary action between the module and the housing.
  • the potting compound of polyurethane, silicone resin, epoxy or the like known materials to a material with high thermal conductivity.
  • the housing is designed so that it can be poured immediately after inserting the LED module into the receptacle from the rear, ie via the opening.
  • the Verg cordblockierstoff achieve in particular an interruption or cancellation of the capillary between the module inserted into the housing and the housing, so that the cast potting compound does not penetrate due to capillary action in the region between the LED and substantially optically transmissive region.
  • a targeted emission of light from the LED is still possible to the outside.
  • Verg cordblockiermittel makes it possible in a particularly simple manner that the LED module and connectable to the module connection cable in the housing without the use of an additional material, such as.
  • the positioning of the housing for example, the aforementioned placement pins, an electrical connection between the module and provide at least one, preferably at least two connection cables used for making electrical contact with the module.
  • the positioning means preferably have an electrically conductive surface or are made of an electrically conductive material.
  • the regions of the placement openings of the module which come into contact with the positioning means likewise have electrically conductive connections for this purpose.
  • the connection cable either the positioning pins have insulation displacement contacts on their end facing the connection cables, or the connection cables are stripped of insulation at corresponding points, so that an electrical connection is established by simple contact contact.
  • the housing further has lateral connection guides with recesses in which at least one, preferably at least two connection cables used for electrical contacting of the module are guided.
  • the recesses preferably have tapers, which reduce in sections the diameter of the recess.
  • the tapers are designed as sealing lips of the recesses into which the connection cable or cables are pressed in order to fix the connection cable or cables sealingly in the connection guides.
  • An additional sealing element can thus be dispensed with.
  • the potting body alone and also supported by the sealing lips thus makes it possible that the LED module is mounted in the housing without the use of additional material sealingly and securely fixed.
  • the tapers serve as an additional strain relief, so that the forces acting on the connection cable or cables tensile forces can be transmitted to the housing safely.
  • the module may also have, for example, on its side facing away from the LED, contacting elements for making electrical contact with the module with connection cables. This in particular if the locating pins are not used for electrical contact between the module and the connection cable.
  • the contacting element is to preferably electrically conductive and may consist of a metal or a metal alloy.
  • the contacting elements are preferably designed as insulation displacement contacts, piercing contacts, crimp contacts or the like known contacting elements. Insulation displacement contacts are usually designed such that they have a slot into which the corresponding conductor is inserted.
  • the slot has such a size that the insulation of the line is cut when pushed in. Thus, an electrical contact with the line can be realized.
  • the slot preferably has a width such that the conductor, for example a wire or strands, is not cut.
  • An arbitrarily long LED chain can be formed by simply arranging and mounting a plurality of packaged LED modules on the connection cables at arbitrary positions.
  • the connection cables between the housed LED modules are uninterrupted cables that are either stripped or contacted at the contact points with insulation displacement contacts, without interrupting the endless cable. This solution allows an endless chaining as well as the use of pre-programmable, freely changeable module distances also within the LED chain.
  • connection cables By using flexible connection cables, the area of use can be increased compared to rigid conductors. Thus, an infinite number of possible distances (uniform, nonuniform, repetitive) of the LED modules 1 are given on a connection cable, which can be easily produced by casting the potting body. Likewise, by the possible use of endless cables any chain length is possible, which can also take any form of flexible connection cables.
  • the light strip has a strip-shaped substrate with at least one semiconductor light source arranged on at least one flat side of the substrate.
  • the substrate is a ribbon cable with multiple wires, wherein at least one core is at least partially stripped on at least one flat side and the semiconductor light source electrically contacted stripped areas of at least one core.
  • the light strip has at least one core which is not stripped off on a flat side and is at least at stripped areas of the at least one flat side of a light-permeable cover, in particular potting compound (such as silicone, polyimide, PVC, PE, PP and for a high light yield transparent or, for example, for a more homogeneous Lichtabstrahlmuster translucent (opaque, milky) be covered), wherein the light strip at its at least one non-stripped edge-side wire is free of the cover.
  • potting compound such as silicone, polyimide, PVC, PE, PP and for a high light yield transparent or, for example, for a more homogeneous Lichtabstrahlmuster translucent (opaque, milky) be covered
  • the light strip at its at least one non-stripped edge-side wire is free of the cover.
  • ribbon cables eg, with different trace thicknesses, trace shapes, trace materials, color of insulation, etc.
  • an electrical connection can be particularly easy to introduce and change, for. B. by introducing interruptions of the wires or simple soldering of cables, possibly even during assembly or by an end user.
  • many standard commercial plugs and tails are available for commercial flat ribbon cables, including IP protection, UL approval, and / or similar certifications.
  • cores of a ribbon cable typically have a higher cross-section than a conductor of a printed circuit board, which in turn allows higher current densities and a parallel connection of semiconductor light sources.
  • the non-stripped wire does not contribute to the electrical connection of the at least one semiconductor light source, but may increase the stability of the luminous band.
  • a wire is a means of heat dissipation, to which it may be associated in particular with at least one heat sink.
  • the potting compound provides protection, in particular IP protection, for the at least one semiconductor light source and the stripped areas of the flat sides available.
  • the release of the non stripped wire from the cover allows for higher heat dissipation and saves material for the cover.
  • the peripheral wire can prevent overflow of a potting compound, if such is used, for. B. by the not removed insulation acts as a stop edge. Provision of the at least one stripped conductor can be achieved, for example, by scraping, cutting.
  • the at least one semiconductor light source comprises at least one light-emitting diode. If several LEDs are present, they can be lit in the same color or in different colors. Several light emitting diodes can produce a mixed light, z. B. a white mixed light.
  • the at least one light-emitting diode may contain at least one wavelength-converting phosphor (conversion LED). The phosphor may alternatively or additionally be arranged remotely from the light-emitting diode ("remote phosphor"), z. B. in a potting compound.
  • the at least one light-emitting diode can be in the form of at least one individually housed light-emitting diode or in the form of at least one LED chip. Several LED chips can be mounted on a common substrate ("submount").
  • the at least one light emitting diode may be equipped with at least one own and / or common optics for beam guidance, z. At least one Fresnel lens, collimator, and so on.
  • the electrical contact of the contact areas can be done by soldering or an electrically conductive adhesion promoter such as solder paste or conductive adhesive.
  • the solder paste or the conductive adhesive can be applied for example by means of printing, dispensing or jetting.
  • the semiconductor light source may be materially connected to the at least one contact areas.
  • the ribbon cable can be equipped in a similar manner with electrical and / or electronic components, for. B. surface-mounted devices ("SMDs"). At least some of these components like a driver or part of a driver for the driver represent at least one semiconductor light source.
  • the method of manufacturing a luminous band according to DE 10 2013 203 666 B4 includes the following steps: (a) providing a ribbon cable with multiple wires; (B) stripping at least a portion of at least one core on at least one flat side of the ribbon cable; and (c) attaching at least one semiconductor light source to an associated flat side so as to be electrically connected to contact areas of the at least one stripped wire.
  • the stripping step is followed by a step of introducing at least one break into a stripped portion of at least one wire, and the step of attaching comprises electrically connecting at least one semiconductor light source to discontinuously separated contact areas of a common wire.
  • the method comprises a step of applying an electrically conductive adhesion promoter to at least one section of at least one stripped-apart core.
  • the adhesion promoter can in particular be applied before or after an interruption has been introduced.
  • the application of the electrically conductive adhesion promoter is followed by the step of attaching the at least one semiconductor light source.
  • This step comprises equipping with at least one semiconductor light source and / or with at least one electrical or electronic component at the location of the electrically conductive adhesion promoter, and thus at an associated contact region.
  • the attachment of at least one semiconductor light source can be followed by a temperature process with elevated temperature, for. B. for melting the solder paste or for curing the conductive adhesive.
  • a temperature process with elevated temperature, for. B. for melting the solder paste or for curing the conductive adhesive.
  • a flat strip or one side only stripped or populated ribbon cable that a step of attaching z.
  • B. a double-sided adhesive tape on the non-stripped or not equipped flat side connects.
  • the double-sided tape also omitted or applied after casting with a translucent potting compound at least stripped points of at least one flat side of the ribbon cable.
  • the light strip according to the DE 10 2013 203 666 B4 has therefore parallel arranged cores, in particular two outer, non-current cores, a central core with interruption to the series connection of the LEDs and right and left thereof extending over their entire length stripped or isolated from the insulation cores, where the operating voltage (plus and minus pole) is applied.
  • the two arranged on the edge, not stripped wires serve to increase the mechanical stability of the light strip and as a stop edge for the potting compound.
  • a light strip known for example for facade lighting, which has a flexible printed circuit board and a plurality of light sources and a first conductor for powering the light sources, wherein the light sources are arranged so that the light is emitted substantially normal to the flexible printed circuit board.
  • a housing is formed around the flexible circuit board and the light sources to form a flexible, elongated object, the housing having at least a first portion and a second portion extending along the flexible circuit board.
  • the first section is substantially transparent to the light emitted by the light sources.
  • the first and second portions are arranged such that the emitted light is reflected at the second portion and the main distribution direction of the emitted light is redirected to produce an intensity pattern having a maximum intensity in one direction at a non-zero angle to the normal of the flexible one PCB.
  • the angle to the normal of the flexible circuit board is between 30 degrees and 60 degrees, in particular about 45 degrees. At least approximately half of the light emitted by the light sources is reflected / redirected by the second section.
  • the flexible light strip has a substantially rectangular shape with first and second in cross section opposite surfaces and third and fourth opposing surfaces, wherein the flexible circuit board extends substantially parallel to the first surface, and the first and second sections are arranged such that at least approximately half of the light emitted from the light strip is from the third and / or or fourth surface is emitted.
  • the light strip has one or more second electrical conductors that extend substantially continuously parallel to the flexible circuit board and are electrically connected to the flexible circuit board at a plurality of positions.
  • the housing is formed around the flexible circuit board, the light sources and the second electrical conductors to form a flexible elongated object.
  • the flexible printed circuit board has a plurality of regions which are mechanically and electrically interconnected by connecting elements.
  • an arrangement has at least one first flexible light strip, a second flexible light strip and a connector for connecting at least one first conductor of both the first and the second flexible light strip to at least one second conductor of the at least one first and second flexible light strip.
  • the invention is opposite to the light-emitting diode bands according to the DE 10 2012 213 309 A1 the task of further developing these so that the user a verkettbares, vollvergossenes, flexible light emitting diode band is provided, which has a reliable electrical and mechanical connection at long feed lengths and is inexpensive to produce.
  • the light-emitting diode strip according to the invention has the advantage that it can be manufactured in any length in a surprisingly simple and cost-effective manner, with the flexible open profile (with integrated electrical lines with or without insulation for power supply and / or control and / or data transmission) both as a carrier and as a casting mold serves.
  • the inventive combination, in particular of extruded profile and the Vergusstechnik be in a surprisingly simple manner, in the DE 10 2013 203 666 B4 described disadvantages of the prior art (LED strip lights with a U-shaped profile and with a potting with translucent silicone) overcome, with a flat light exit surface can be realized.
  • Fig. 1 to Fig. 21 show various embodiments of a light-emitting diode band LB according to the invention, in particular of linkable, fully potted, LED strips below LB called light bands with long operable length with at least one feed, respectively power supply.
  • Such compact, cast LED strips LB with very long feed lengths up to 100m and beyond, are required in tunnel lighting, among other applications. This is achieved by combining the individual summation currents I1, I2, I3, .., In (see Fig. 5 ) of each flexible conductor carrier LP on the electrical lines L1, L2, Ln in a flexible, open to one side profile U (in particular a U-shell / U-profile).
  • the geometry of the cross section of the light-emitting diode band LB can be rectangular, square (polygonal) or even semicircular.
  • Fig. 13, Fig. 14 respectively.
  • Fig. 15 and Fig. 21 turn, this manufactured, potted LED strip LB turn can also serve as a basic lighting element for other geometries.
  • a U-shell also called U-profile
  • the flexible conductor carriers LP preferably have a module length of 5 m to 10 m and a population density of 10 LEDs / m to 100 LEDs / m.
  • the two legs of the U-shell U are preferably designed with an undercut H to the ground.
  • This undercut H ensures in the production process for an optimal anchoring of a potting compound V on the U-shell U.
  • the material of the U-shell U is preferably made of polyurethane and is preferably produced by extrusion.
  • the U-shell U is adjustable by additive particles in color and properties. It is conceivable, for example, by adding color particles, a pure white U-shell U for optimal light output or by color particles of the RAL palette individual color design depending on the place of use (decorative element). Furthermore, by incorporation of special particles, a flame-retardant material property can be achieved, v.a. for use in areas with increased safety requirements. Furthermore, a heat-conducting property is possible by ceramic particles.
  • a flexible conductor carrier LP is equipped with LEDs and glued and filled with a preferably clear, consisting of polyurethane potting compound V and thereby protected from moisture or weathering. around the point glare too
  • a translucent potting compound V see also FIG Fig. 13, Fig. 14 . Fig. 15 . Fig. 21 V2).
  • each flexible conductor carrier LP By combining the individual currents I1, I2, I3, .., into each flexible conductor carrier LP as a sum current onto the electrical conductors L1 , L2,, Ln in the U-shell, the limitation of the current carrying capacity of the flexible conductor carrier LP is bypassed, which has so far prevented such large feed lengths.
  • a flexible conductor carrier LP which is preferably equipped with chip light-emitting diodes (LED1, LED2, .., LEDn) in the U-shell U.
  • the flexible conductor support LP is glued to the inner bottom between the legs of the profile U.
  • a mechanical reinforcement T which is for example a plastic film, a metal foil, alternatively a plastic tape / metal band, a grid or a glass fiber reinforced fabric tape to prevent bending against the permissible bending direction of the flexible conductor carrier LP, can be introduced.
  • the individual components are non-positively connected by a suitable adhesive tape.
  • a suitable, preferably planer-like tool W is on the inside of the U-shell U, the U-shell U itself and the insulation of the line L1, L2,, Ln limited opened at the point of contact in a manner and removed that each access to the or desired line L1, L2,, Ln at the or the respective points is exposed.
  • a further possibility for exposing the conductors L1, L2,, Ln running inside the U-shell U represents the technique of material removal by grinding or milling (see Fig. 7 ).
  • the upper layer of the U-shell U is defined limited at the point of contact removed and the conductors L1, L2,, Ln inside the U-shell U are accessible at the or the respective locations.
  • the maximum length which can be operated with one feed can be repeated, i. to a maximum of twice, be increased.
  • the profile U is cut to the length of the finished product.
  • the next production step is now the opening of the inner bottom towards the preferably four, running in the interior of the open profile U, lines L1, L2,, Ln, there to make a subsequent contact with the flexible conductor support LP, which is later applied to the inner bottom of the open profile U, to produce.
  • This opening of the insulation in the floor area can, for example. Via a planer-like tool W (see Fig. 6 ) or a suitable grinding / milling combination W (see Fig. 7 ) defined.
  • the insulation in the bottom area of the U-shell and the conductors L1, L2,, Ln located therein is removed until the copper conductors of the lines L1, L2,, Ln are bare and thus contacting is possible.
  • the beginning and / or the end of the open profile U is assembled, which means that we removed the outer geometry of the profile U, so that only the insulated or uninsulated conductors L1, L2,, Ln from the bottom of the U-shell just lie. Virtually at each end, four individual wires L1, L2,, Ln project out of the profile U (free wire ends).
  • a now preferably IP-protected plug-in system S, B is now assembled at the beginning and / or end of the open profile U.
  • the main body / profile U has a defined length, preferably has an IP plug-in system S, B at the beginning and / or end, is open at a defined point in the interior of the profile U and thus access to the running in the ground conductors L1, L2,, Ln exposed.
  • the profile U is inserted or clamped in a suitable shape, which represents the fixation.
  • the profile U is fixed in the longitudinal direction, is kept straight and has no height differences. This in turn is important for the later process of introducing the potting compound V.
  • This reinforcement T preferably a plastic film, a metal foil, alternatively plastic tape / metal strip, a grid or a glass fiber reinforced fabric tape, or a flat plate with recesses, is applied to the inner bottom of the open profile U by means of a suitable adhesive.
  • a suitable adhesive preferably a plastic film, a metal foil, alternatively plastic tape / metal strip, a grid or a glass fiber reinforced fabric tape, or a flat plate with recesses
  • the flexible charge carrier LP is introduced on the mechanical reinforcement T introduced in the previous step with a suitable adhesive (see Fig. 3 ). It should be noted that a defined distance to the exposed conductors in the bottom of the open profile U is kept free.
  • the contacting takes place between the conductors L1, L2,, Ln running in the bottom of the profile U, and the flexible conductor carrier LP.
  • the connection is preferably made by soldering to ensure a permanent and uninterrupted contact.
  • a defined amount of a potting compound V preferably made of polyurethane, is discharged in such a way that a uniform filling level in the open profile U is achieved.
  • the potting compound V can consist of one or more layers and in turn even by the addition can be influenced by additives in their properties.
  • translucent particles for reduced glare and a more uniform light distribution or fluorescent particles which make it possible to emit afterglow are to be mentioned as conceivable settings, above all in areas for safety-relevant orientation illuminations.
  • the lower part, in which the insulated or non-insulated conductors L1, L2,, Ln run can be removed in the beginning and end regions of the profile U. Now the stripped conductors L1, L2,, Ln are exposed in the beginning and end area and can be assembled with plug S and socket B. Thanks to this technology, the flexible conductor carriers LP, which continue to run on the upper side, can be fitted with the next element, without having to accept a shadow effect at the beginning and at the end (see Fig. 12 ).
  • German Patent 10 2013 019 039.8 B3 insert see Fig. 13, Fig. 14
  • the first leg S1 of the housing G partially consists of a translucent, corresponding to the capillary effect in the wall thickness and tapered in the plastic material of the housing G passing second potting compound V2 and at least partially made of the plastic material of the (U-shaped) housing G, being already finished on this leg portion S1 encapsulated LED strip / LED line LB arranged and embedded in a first transparent potting compound V1.
  • the light of the chip LEDs LED is reflected by the inner surfaces of the housing G and diffused by the one end face ST of the housing G forming second potting compound V2, wherein the light emitting diode band LEB is horizontally flexible in the extension direction.
  • German patent 10 2013 019 039.8 B3 described and in Fig.
  • the already finished encapsulated LED strip / LED line LB can be arranged on one of the front side ST of the housing G opposite wall.
  • part of the light of the chip LEDs LED is reflected by the inner surfaces of the housing G and diffused by the one end face ST of the housing G forming second potting compound V2, wherein the light emitting diode band LEB is vertically elastic in the extension direction.
  • both positive properties, namely the opal, homogeneous and flat illuminated surface are combined with a large operable length according to the invention.
  • the open profile U which according to the invention serves both as a carrier and as a casting mold VG, have different geometries; Undercuts or the like in the profile U / in the form U are to be regarded as unproblematic, since the profile U and the potting material V are bending elastic and compensate for the forces occurring during demoulding.
  • Fig. 16 shows in detail a second embodiment, namely a convex formation of the open profile U
  • Fig. 17 shows in detail a third embodiment with upwardly tapered flanks of the open profile U
  • Fig. 18 shows in detail a fourth embodiment with convex flanks and straight bottom of the open profile U
  • Fig. 19 shows in detail a fifth embodiment with undercuts and upwardly tapered flanks of the open profile U
  • Fig. 20 shows in detail a sixth embodiment of the flexible open profile, namely a double-T profile U.
  • FIG. 21 a third embodiment of the light emitting diode band LEB semi-circular executed basic shape VG according to the invention.
  • LED modules LED on the double-T profile U can also be controlled independently of each other.
  • decorative effects can be achieved by a different dimming of the strip LED;
  • the color mixture in the luminaire body can be made variable and dynamic.
  • the same principle can also be applied to different shades of white, thus a lamp can be variably adjusted from a warm white tone to a cool white tone. For example, to simulate a daylight simulation (early evening: warm white, during the day: cool white).
  • the holding possibilities of the embodiments of the light emitting diode strip LB according to the invention according to the invention are as follows.
  • a corresponding profiling of the legs of the open profile U, with symmetrical cross-section by means of a prestressed holder made of plastic or spring steel, which engages in the negative profiling, a corresponding holding device can be provided, which is easy and quick to assemble.
  • a headband with preload which tapers upwardly and in which the cast light / light emitting diode tape is snapped may be used as a mounting bracket.
  • Another mounting option of the light-emitting diode strip LB according to the invention is to see a groove with an undercut on the back outside the open profile U itself before. In this undercut groove, a mushroom-shaped holder is inserted and locked, which holds the LED strip LB.
  • the open profile is made of polyurethane / extruded or in particular of thermoplastics (eg: acrylonitrile-butadiene-styrene (ABS), polyamides (PA), polylactate (PLA), polymethyl methacrylate (PMMA), polycarbonate (PC), polyethylene terephthalate (PET ), Polyethylene (PE), polypropylene (PP), polystyrene (PS), polyetheretherketone (PEEK) and polyvinyl chloride (PVC) by injection molding or by extrusion getting produced.
  • thermoplastics eg: acrylonitrile-butadiene-styrene (ABS), polyamides (PA), polylactate (PLA), polymethyl methacrylate (PMMA), polycarbonate (PC), polyethylene terephthalate (PET ), Polyethylene (PE), polypropylene (PP), polystyrene (PS), polyetheretherketone (PEEK) and polyvinyl chloride (PVC) by
  • subregions of the profile in particular a leg of a U-profile or the vertical middle part and / or the upper and / or the lower transverse part of a double-T-profile, made of transparent plastic, so that in combination with the radiation through the transparent or translucent potting compound V an emission angle greater than 180 ° up to 360 °, with all-round light emitting diodes (COG-LEDs (Chip On Glass), which have an all-round radiation characteristic through their glass substrate in conjunction with a recess / hole in the flexible conductor support LP through which the COG LED emits their light up and down, virtually all around, radiating out) or arranged back to back along the gravity line of the double T-profile LEDs LED1, LED2, .., LEDn, in particular chip LEDs, and completely transparent profile U become.
  • COG-LEDs Chip On Glass
  • a 270 ° -radiation can in particular in an arrangement of the electrical lines L1, L2,, Ln in the base of the U-profile and a transparent leg or arrangement of the electrical lines (L1, L2,, Ln) in a leg and transparent other leg as well as transparent basis are realized.
  • the profile U for strain relief / increasing the tensile strength at least one wire or a strand (consisting of several individual wires), which in particular in the leg of a U-profile or in the base between the electrical lines L1, L2, Ln or the upper and / or in the lower transverse part of a double-T-profile or in the vertical middle part between the electrical lines L1, L2,, Ln is / are arranged.
  • the wire / strand is in a side wall (leg) which abuts the wall, and the electrical lines L1, L2,, Ln are in the bottom (base) of the profile U (U-profile) in Extension direction of the light emitting diode band LB arranged.
  • the side wall and bottom are in particular opaque (the side wall and / or the bottom being coated on the inside with reflective material, in particular reflective particles embedded in the coating) and the light of the light emitting diodes LED1, LED2, .., LEDn coming on the opposite, transparent or translucent sidewall (Leg) into the room and up or down through the transparent or translucent potting V (arrangement on the side wall of a room).

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  • General Engineering & Computer Science (AREA)
  • Led Device Packages (AREA)
EP17020490.3A 2016-10-24 2017-10-23 Bande de diodes électroluminescentes modulaire, entièrement coulée, flexible et son procédé de fabrication Withdrawn EP3312506A1 (fr)

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DE102016012639.6A DE102016012639B4 (de) 2016-10-24 2016-10-24 Verkettbares, vollvergossenes, flexibles Leuchtdiodenband und Verfahren zu dessen Herstellung

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EP3561369A1 (fr) 2018-04-24 2019-10-30 CLD Germany GmbH Bande de diodes électroluminescentes flexible et entièrement coulée pour grosses sections d'alimentation et son procédé de fabrication
CN112178478A (zh) * 2020-10-10 2021-01-05 曾志明 一种灯带及其制备工艺
WO2023012744A1 (fr) 2021-08-06 2023-02-09 Stepan Engineering Gmbh Système de profilé d'éclairage à diode électroluminescente (del) et technique de connexion
WO2023012507A1 (fr) 2021-08-06 2023-02-09 Stepan Engineering Gmbh Technique de liaison de connexion pour un système de profilé de del, et système de profilé de del
US20230123362A1 (en) * 2020-03-05 2023-04-20 Agomoon SRL Led system without heat sink
EP4339507A1 (fr) * 2022-09-16 2024-03-20 Vivalyte BV Kit d'éclairage destiné à être fixé à une surface de support ou à une structure de support incurvée

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Publication number Priority date Publication date Assignee Title
EP3561369A1 (fr) 2018-04-24 2019-10-30 CLD Germany GmbH Bande de diodes électroluminescentes flexible et entièrement coulée pour grosses sections d'alimentation et son procédé de fabrication
WO2019206457A1 (fr) 2018-04-24 2019-10-31 Cld Germany Gmbh Ruban souple, encapsulé, de diodes électroluminescentes pour de grandes zones d'alimentation et procédé pour sa fabrication
US20230123362A1 (en) * 2020-03-05 2023-04-20 Agomoon SRL Led system without heat sink
US11732880B2 (en) * 2020-03-05 2023-08-22 Agomoon SRL LED system without heat sink
CN112178478A (zh) * 2020-10-10 2021-01-05 曾志明 一种灯带及其制备工艺
WO2023012744A1 (fr) 2021-08-06 2023-02-09 Stepan Engineering Gmbh Système de profilé d'éclairage à diode électroluminescente (del) et technique de connexion
WO2023012507A1 (fr) 2021-08-06 2023-02-09 Stepan Engineering Gmbh Technique de liaison de connexion pour un système de profilé de del, et système de profilé de del
EP4339507A1 (fr) * 2022-09-16 2024-03-20 Vivalyte BV Kit d'éclairage destiné à être fixé à une surface de support ou à une structure de support incurvée
BE1030887B1 (nl) * 2022-09-16 2024-04-16 Vivalyte Bvba Verlichtingskit voor bevestiging tegen een gebogen draagvlak of draagstructuur

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