EP2850361A1 - Connection support for light-emitting diode and corresponding flexible band - Google Patents

Connection support for light-emitting diode and corresponding flexible band

Info

Publication number
EP2850361A1
EP2850361A1 EP13727060.9A EP13727060A EP2850361A1 EP 2850361 A1 EP2850361 A1 EP 2850361A1 EP 13727060 A EP13727060 A EP 13727060A EP 2850361 A1 EP2850361 A1 EP 2850361A1
Authority
EP
European Patent Office
Prior art keywords
support
connection
light
emitting diode
flexible
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Withdrawn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
EP13727060.9A
Other languages
German (de)
French (fr)
Inventor
David Zieder
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.)
IDZ Concept
Original Assignee
IDZ Concept
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 IDZ Concept filed Critical IDZ Concept
Publication of EP2850361A1 publication Critical patent/EP2850361A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • F21V21/002—Supporting, suspending, or attaching arrangements for lighting devices; Hand grips making direct electrical contact, e.g. by piercing
    • 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
    • F21S4/24—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 of ribbon or tape form, e.g. LED tapes
    • 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
    • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/50—Cooling arrangements
    • F21V29/70—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/66—Structural association with built-in electrical component
    • H01R13/717—Structural association with built-in electrical component with built-in light source
    • H01R13/7175—Light emitting diodes (LEDs)
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R25/00—Coupling parts adapted for simultaneous co-operation with two or more identical counterparts, e.g. for distributing energy to two or more circuits
    • H01R25/14—Rails or bus-bars constructed so that the counterparts can be connected thereto at any point along their length
    • H01R25/142—Their counterparts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/24—Connections using contact members penetrating or cutting insulation or cable strands
    • H01R4/2416—Connections using contact members penetrating or cutting insulation or cable strands the contact members having insulation-cutting edges, e.g. of tuning fork type
    • H01R4/242—Connections using contact members penetrating or cutting insulation or cable strands the contact members having insulation-cutting edges, e.g. of tuning fork type the contact members being plates having a single slot
    • H01R4/2425—Flat plates, e.g. multi-layered flat plates
    • 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
    • F21S8/03—Lighting devices intended for fixed installation of surface-mounted type
    • F21S8/038—Lighting devices intended for fixed installation of surface-mounted type intended to be mounted on a light track
    • 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
    • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/85—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems characterised by the material
    • F21V29/89—Metals
    • 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]

Definitions

  • the present invention relates to a connection support for electronic components.
  • the invention makes it possible to produce a light flexible light strip comprising a plurality of light-emitting diodes, otherwise known as LEDs ("Light Emitting Diode" in the English language).
  • LEDs are electronic components capable of emitting light when an electric current passes through them.
  • One of the factors influencing the light output of an LED is its operating temperature. The lower this operating temperature, the higher the light output.
  • An LED converts some of the electrical energy it receives into light, the rest is released as heat. If this heat accumulates near the LED, then the operating temperature of the LED increases, and the performance of the LED degrades.
  • the LEDs are traditionally connected to a heat sink comprising a metal block such as aluminum or copper.
  • the heat sink has fins extruded into the metal block to increase the heat exchange surface between the sink and-for example, outside air.
  • a disadvantage of heat sinks of the prior art is that they do not make it possible to establish a direct electrical connection with the LEDs.
  • Another disadvantage is that their size and shape do not allow a great flexibility in the positioning of the LEDs.
  • the strip is made using a printed circuit on which the components, including LEDs, are soldered.
  • the invention aims to provide a versatile connection support for overcoming one or more disadvantages of the prior art.
  • connection support for an electroluminescent diode comprising: an electrical connection zone intended to receive said light-emitting diode, characterized in that it comprises two adjacent metal parts electrically insulated from one of the electroluminescent diode, another and each forming part of the connection area intended to be in contact with a corresponding electrical contact of the light-emitting diode, each portion having on the one hand a piercing connection means for piercing an insulated electrical conductor for supplying power electroluminescent diode, and on the other hand a lateral extension forming a heat sink.
  • said heat sink comprises an upper face and a lower face, said upper face being intended to be in thermal contact with a first dissipating medium and said lower face being intended to be in thermal contact with a second dissipating medium different from the first dissipating medium and higher thermal conductivity.
  • the heat sink is in thermal contact with two different heat dissipating media, the heat dissipation generated by the light-emitting diode is considerably improved.
  • connection means is arranged at the connection area and extends from the face opposite the face of said support for receiving the light emitting diode.
  • connection means is arranged in the lateral extension of the connection zone and extends from the face of said support for receiving the light emitting diode.
  • connection support said at least one connection means is made according to the IDC technology for "Insulation-displacement connect" in English, and said at least one connection means of said support is configured to pierce a wiring means flexible by stripping said flexible wiring means so as to be in contact with an electrical conductor of said means for flexible wiring.
  • the flexible wiring means comprises a flexible web or a wiring wire.
  • connection support is assembled with a support base configured to improve the mechanical strength of said support.
  • connection support is configured to be traversed by said flexible sheet.
  • the support base comprises at least one assembly means configured to hold the support base with the support and comprising at least one groove capable of constraining the movement of the support.
  • the support base has a generally parallelepipedal general shape and the assembly means comprises at least one longitudinal groove capable of constraining a vertical movement of the support.
  • This groove for example longitudinal, allows to simply and quickly clip the support on the support base, and to maintain easily without requiring additional tool or additional piece.
  • the support base includes attachment means configured to maintain the support base with an outer member.
  • the support base is an insulating material.
  • the support base includes through openings to improve heat dissipation.
  • the second dissipating medium is a thermally conductive material.
  • the second dissipating medium is a thermally conductive silicone.
  • the support comprises a electrically insulated and thermally conductive interface capable of connecting the support to the second dissipating medium.
  • the interface may be in the form of an electrically isolated and thermally conductive adhesive element.
  • the second dissipating medium is for example a metallic material such as aluminum.
  • connection support said lower face is in contact with the base of the support.
  • the base of the support comprises the second dissipating medium.
  • connection support has at least one positioning means in order to constrain the displacement of the light-emitting diode.
  • the heat sink has a surface greater than 200 mm 2 .
  • the support comprises a guide of the connection means configured for guiding and holding in position the connecting means during connection to the flexible wiring means.
  • the guide is for example made of an insulating material, such as plastic.
  • the invention also relates to a flexible strip comprising a flexible sheet having conductive tracks, characterized in that it further comprises at least one connection support carrying at least one light emitting diode, said at least one support being as defined above.
  • FIG. 1 represents a perspective view of a connection support for a light-emitting diode having electrical connection means oriented in a first direction;
  • FIG. 2 represents a perspective view of part of the support
  • FIG. 3a shows a metal strip from which the support is manufactured
  • FIG. 3b shows a metal strip shaped to form support portions
  • FIG. 4a is a plan view of a strip of supports comprising two shaped metal strips
  • FIG. 4b shows a bottom view of the carrier strip
  • FIG. 5 shows a portion of the carrier strip on which LEDs have been assembled, and a carrier cut out of the carrier strip
  • FIG. 7 shows a flexible light strip as obtained by connecting a plurality of LEDs to a flexible wiring means with supports and support bases
  • FIG. 8 represents a variant of the electrical connection means of the support and a variant of the support base
  • FIG. 9 represents positioning means for positioning the LED on the support
  • FIG. 10 represents a variant of a support base
  • FIG. 11 represents a view from below of a variant of the means for assembling the support with the base of the support
  • FIG. 12 represents a view from above of a variant of the support base
  • FIG. 13 represents the flexible light strip according to a second embodiment
  • FIG. 14 represents the flexible light strip assembled to an external element
  • FIG. 15 represents a variant of the connection support for light-emitting diode having electrical connection means oriented in a second direction opposite to the first direction
  • FIG. 16 shows a third embodiment of the flexible light strip with a light-emitting diode connection carrier having electrical connection means oriented in the second direction;
  • FIG. 17a is a view from below of a light-emitting diode connection support according to a fourth embodiment, comprising a guide for the connection means,
  • FIG. 17b is a view from above of the connection support of FIG. 17a
  • FIG. 18 shows the connection support of FIG. 17b assembled on a profile and whose connection means are not folded over the guide
  • FIG. represents the connection support of Figure 18 assembled on the profile and whose connection means are folded over the guide.
  • connection support 1 carrying at least one light emitting diode 3, known under the acronym LED.
  • connection medium is capable of performing the following functions:
  • connection support 1 for
  • connection support 1 comprises an upper face 5, for example substantially flat and a lower face 7, for example substantially flat, parallel to the upper face 5.
  • connection zone 8 delimited by dashes in this example, intended to receive the LED 3.
  • connection zone 8 may differ according to the connection supports 1.
  • the support 1 is distinct from the LED 3. This makes it possible to use LEDs 3 as commercially available.
  • the support 1 comprises two parts 9, 11: a first portion 9 and a second portion 11 adjacent.
  • the first part 9 and the second part 11 are adjacent, that is to say they are in the immediate vicinity of one another.
  • Each of the two parts 9, 11 comprises a part of the connection zone 8.
  • the two parts 9, 11 are connected to electrical contacts (not shown) of the LED 3.
  • the first part 9 is connected to an anode
  • the second part 11 is connected to a cathode of the LED 3.
  • the two parts 9, 11 are electrically isolated from each other to avoid short circuits.
  • the two parts 9, 11 are separated by an insulating region 13.
  • This insulating region 13 is for example air.
  • the two parts 9, 11 are distinct from each other.
  • FIG. 2 represents a part 9, 11. Such a part 9, 11 can be obtained by shaping and cutting a metal strip 15.
  • the metal strip 15, represented by FIG. 3a comprises, for example, a copper or copper alloy strip. Indeed the copper has a good thermal conductivity, which allows a dissipation of the effective heat.
  • the thickness e of the metal strip 15 is for example of the order of 0.2 mm.
  • a longitudinal axis O is defined according to the length of the metal strip 15, a transverse axis OY according to the width of the metal strip 15, and a vertical axis OZ according to the thickness of the metal strip 15. These three axes are substantially orthogonal and have the same origin O. These three axes OX, OY, OZ serve as reference for all the figures included herein.
  • connection zone 8 in this example on the upper face 5 of the metal strip 15.
  • the remainder of the metal strip includes a heat sink 17.
  • a shaped metal strip is shown in Figure 3b.
  • the formatting can be performed on a progressive cutting tool or a tool to follow.
  • the shaping comprises, for example, a punching step, during which the heat sink 17 is punched in order to obtain openings 19. These openings 19 serve subsequently to drive the metal strip 15 onto tooling elements by means of traction members (not shown).
  • the shaping of the metal strip 15 may also include a cutting step at the end of which one or more connection means 20 are obtained, allowing the electrical connection of the support 1, as will be described in detail below.
  • connection means 20 may be located at the connection zone 8 as illustrated in FIG.
  • the shaping of the metal strip 15 may also comprise a folding step, during which the connecting means 20 are folded substantially perpendicularly to the metal strip 15 and downwards along the vertical axis 02.
  • the shaped metal strip comprises a plurality of identical support parts 9, 11.
  • This strip of supports 16 comprises a plurality of supports 1, and each support comprises two parts 9, 11.
  • the first portion 9 and the second portion 11 have a similar shape.
  • two metal strips similarly shaped can be contrasted as shown in FIG. 4a. This makes it possible to produce a single support part model 1 and thus simplify the production of the support 1 and to reduce manufacturing costs.
  • the two parts 9, 11 have different shapes
  • FIG. 4b represents a view from below of a strip of supports 16. This FIG. 4b makes it possible to see more clearly the connection means 20 as well as the lower face 7 of the heat sink 17.
  • connection means 20 may extend from the face of the support opposite to the face intended to receive the LED 3, in this case the lower face 7, as in the example illustrated in FIGS. 4b to 6, or alternatively, the means connection 20 can extend from the face intended to receive the LED 3, here the upper face 5, as in the example of Figure 15.
  • the LEDs 3 are welded together on the support strips 16.
  • LEDs 3 may be a standard model as commercially available.
  • the LED 3 can be a LED 3 of high power, that is to say of power greater than 1W.
  • the support strip 16 is cut, so as to obtain individual supports 1.
  • the support 1 connects the LED 3 to electrical conductors 10, such as conductive tracks 10, of a flexible wiring means 21 thanks to its electrical connection means 20.
  • the flexible wiring means 21 comprises a flexible sheet 211.
  • a flexible sheet 211 is a standard and inexpensive electronic component, having a plurality of conductive tracks 10 surrounded by an insulating protective sheath 12.
  • connection means 20 form, for example, a substantially straight angle with the upper face 5 of the support 1, and extend downwards along the vertical axis 02 in the example of FIG. 6 or on the contrary upwards according to FIG. vertical axis 02 in the example of FIG.
  • connection means 20 may for example be made according to the IDC technology for "Insulation-displacement connector" in English.
  • connection means 20 comprise for example connecting lugs terminated by pins 201 which strip the web 211 by piercing it. In this way, there is no need to previously strip the flexible sheet 211.
  • the pins 201 can be folded by crimping in the direction of the flexible sheet 211.
  • connection means 20 comprise connecting lugs not having pins 201.
  • the flexible ply 211 is stripped beforehand.
  • the electrical connection between the support 1 and the conductive tracks 10 is performed automatically.
  • this electrical connection is made manually.
  • connection means 20 offer a large choice to the end customer as to the arrangement of the LEDs 3 on the flexible sheet 211, for example to form a flexible flexible strip 23 as shown in FIG.
  • the LEDs 3 can be connected in parallel or in series.
  • the wiring means 21 comprises wiring wires 212.
  • the support 1 electrically connects each electrical contact of the LED 3 to a wiring wire 212 having a single conductive track surrounded by an insulating sheath (not shown).
  • Each of the parts 9, 11 of the support 1 comprises connection means 20 having pins 201.
  • the connection means 20 extend in a plane defined by the longitudinal axes OX and transverse OY. The electrical connection is established by folding the pins 201 to pierce the insulating sheath of the wiring wire and come into contact with the conductive track.
  • a plurality of LEDs 3 can thus be connected in series in order to form a flexible LED light strip 3 which also has great flexibility of use.
  • a part 9, 11 of the support 1 comprises a plurality of separate connection means 20. This allows a parallel connection A parallel connection allows the end customer to achieve a wide variety of patterns with the LEDs 3.
  • a plurality of LEDs 3 can be secured to each other. a single support 1. For example a first LED emitting a red light, a second LED emitting a green light, and a third LED emitting a blue light, thus forming a set RGB (English "Red, Green, Blue). The support 1 is then configured to then allow the electrical connection of the plurality of LEDs 3.
  • the support 1 comprises a heat sink 17.
  • the LED 3 is carried by the upper face 5 of the support 1 at the connection zone 8 formed by the two parts 9, 11.
  • the two parts 9, 11 of the support 1 extend laterally along the transverse axis OY, beyond the connection zone 8 and thus form a heat sink 17.
  • the heat generated by the LED 3 in operation is transferred to the upper face 5 of the support 1 by conduction.
  • the LED 3 is firmly assembled on the upper face 5 for example by means of an adhesive having a high thermal conductivity, for example a silicone-based gel. .
  • the heat is then conducted in the heat sink 17, then transferred to at least one dissipating medium 37 via the heat sink 17.
  • the dissipating medium 37 is a medium whose temperature is lower than that of the heat sink 17.
  • the heat sink 17 comprises the part of the upper face 5 of the support 1 outside the connection zone 8, the lower face 7 of the support 1 and the sides of the support 1 connecting the upper face 5 and the lower face 7.
  • connection means 20 extend from the upper face 5, for example upwards of the vertical axis OZ, according to the reference of FIG. 16, the entire lower face 7 is used for the heat dissipation, improving thus the heat dissipation.
  • the area covered by each upper face 5 and lower 7 of the heat sink 17 is for example greater than 100mm 2 , which results in a heat exchange surface greater than 200mm 2 .
  • the size of the heat exchange surface can be adapted according to the power of the LED 3. For 3 LED power, it can cover several tens of square centimeters.
  • This extended dimension makes it possible to efficiently transfer the heat contained in the support 1 to the dissipating medium 37.
  • the upper 5 and lower 7 faces have reliefs, for example in the form of projections. These protrusions are for example chiseled in the heat sink 17.
  • the projections can improve the flow of air around the heat sink 17 and thus improve the heat transfer between the heat sink 17 and the dissipating medium 37.
  • these projections may for example be located near the connection zone 8. In this case these projections also serve as positioning means 22a, 22b of the LED 3, as will be described in the following. the current.
  • the projections may also be situated on the longitudinal edges along the longitudinal axis OX, of the heat sink 17.
  • the upper 5 and lower 7 faces of the heat sink 17 are both in contact with a single dissipating medium 37.
  • the sole dissipating medium 37 is, for example, air ambient.
  • This embodiment comprising an LED 3 assembled to a thermally conductive support 1, having a surface heat sink 17 extended in contact with a single dissipating medium 37 thus makes it possible to effectively dissipate the heat generated by the LED 3 in FIG. operation,
  • the support 1 may have at least one first positioning means 22a of the LED 3 located on the heat sink 17.
  • This first positioning means 22a comprises, for example, protrusions chiseled in the heat sink 17 and directed upwards according to the invention. vertical axis 02 and to the connection zone 8 along the transverse axis OY.
  • the first positioning means 22a is carried on the two parts 9, 11 of the support 1 and positions the LED 3 along the transverse axis OY.
  • the support 1 may have a second positioning means 22b of the LED 3 situated at the edge of the connection zone 8.
  • This second positioning means 22b comprises, for example, projections bent upwards along the vertical axis 02, for example so as to be substantially perpendicular to the upper face 5.
  • the second positioning means 22b is carried by the two parts 9, 11 and positions the LED 3 along the longitudinal axis OX.
  • the first 22a and second 22b positioning means are particularly useful when assembling the LED 3 on the support 1.
  • this assembly step generally comprises a reflow solder. It has been experimentally observed that the LED 3 could move on the surface of the support 1 during the reflow soldering, thus causing the LED 3 to be misplaced and, consequently, a bad connection of the LED 3 on the support 1.
  • the bad positioning of the LED 3 on the support 1 can cause a degradation of its performances.
  • the electrical connection between the LED 3 and the parts 9, 11 of the support 1 can not be established, which causes material losses and therefore a decrease in production efficiency.
  • the first 22a and second 22b positioning means therefore make it possible to constrain the displacement of the LED 3 during the assembly step, which makes it possible to ensure a good connection between the LED 3 and the support 1 and thus to reduce losses. 3 and 1 LED material and increase the production output.
  • the positioning means 22a, 22b also have a thermal advantage. Indeed, they allow to increase the circulation of the air around the support 1 and thus improve the heat dissipation.
  • the mechanical strength of the LED 3 to the flexible sheet 211 is achieved by the electrical connection means 20 described above.
  • the electrical connection means 20 constrain the displacement of the LED 3 along the longitudinal axis OX and along the transverse axis OY. If the pins 201 are folded against the flexible ply 211, then the displacement of the LED 3 is also constrained along the vertical axis 02.
  • connection means 20 through the wiring son 212, thus making the mechanical strength of the support 1 to the wiring son.
  • connection means 20 may have holding means 52 for improving the mechanical strength.
  • holding means 52 comprise, for example crimping tabs folded against the wiring son 212.
  • the support 1 can be assembled to a support base 39 as illustrated in FIG.
  • the support base 39 makes it possible on the one hand to improve the mechanical strength of the support 1 by increasing the rigidity of the support 1, and by preventing the support 1 from moving along the vertical axis 02, and on the other hand to fix the support 1 on an external element.
  • this support base 39 is made of thermally insulating material, for example plastic.
  • the support base 39 has a substantially parallelepipedal general shape having a housing 41 extended along the longitudinal axis OX so as to be traversed by the flexible sheet 211, and located in the upper part of the support base 39 along the vertical axis 02.
  • the housing 41 of the support base 39 comprises a plurality of internal grooves 43 extended along the longitudinal axis OX.
  • These internal grooves 43 have a shape substantially complementary to the shape of the flexible sheet 211.
  • These internal grooves 43 serve as guides during the assembly of the support 1 with the flexible sheet 211.
  • the support base 39 protects the pins 201 traversing the flexible ply 11 by avoiding them to be subjected to external environmental constraints.
  • the support base 39 has a plurality of internal slots 45 extended along the transverse axis OY. These internal slots 45 have a shape substantially complementary to that of the connection means 20 in order to accommodate them.
  • the support base 39 has as many internal slots 45 as connection means 20. According to the example illustrated, the support 1 has four connection means 20, and thus the support base 39 has four internal slots 45.
  • the support base 39 may further have attachment means 47 for attaching the support 1 to an external object (not shown).
  • the fastening means 47 comprise external grooves extending longitudinally on the lateral faces of the support base 39, as illustrated by FIGS. 6, 9, 10 and 12.
  • These external grooves allow for example to fix the LED strip 23 to a rail having complementary ribs (not shown).
  • the rail can itself be fixed for example on a ceiling or a frame member.
  • the support base 39 has a substantially flat shape.
  • the support base 39 also has a central rib 49 extending over the width of an upper face and on which the support 1 is placed. This central rib 49 forms a spacer between the lower face 7 of the support 1 and the face. upper support base 39, and thus ensures that the lower face 7 of the support 1 is in contact with the sole dissipating medium 37.
  • the support base 39 may have a plurality of through openings 51 passing through its upper face to its lower face, as shown in Figure 11. These through openings 51 allow better air circulation around the support 1 and thus increase the efficiency of the thermal dissipation.
  • the fastening means 47 comprise a cylindrical rod for example extending from the underside of the support base 39. This rod is received by a means complementary fixation (not shown), for example a housing in an external object.
  • This variant of the support base 39 is particularly suitable for producing car headlights based on a flexible LED light strip 3.
  • the support base 39 also has assembly means 53 with the support 1, which itself has complementary assembly means 55.
  • the openings 19 located on the heat sink 17 comprise the complementary assembly means 55.
  • the assembly means 53 comprise a plurality of rods located on the upper part of the support base 39.
  • the rods and the openings 19 have a section of substantially similar shape. In the illustrated examples of FIG. 6 in FIG. 11, four cylindrical rods and four circular openings 19 can be seen.
  • the lower ends 57 of the assembly means 53 along the vertical axis O 2 have a bearing of greater cross section than the rest of the assembly means 53.
  • the lower face 7 of the support 1 rests on the lower ends 57.
  • lower 57 reduce the surface on which the support 1 and the support base 39 are in contact, and thus increase the contact area between the heat sink 17 and the dissipating medium 37. The heat dissipation is therefore improved .
  • the assembly means 53 comprise pawls each having two branches, the ends of the branches being wider than the rest of the branches. Thus the pawls can be inserted through the openings 19, but can not be removed accidentally.
  • the assembly means 53 comprise at least one groove for clipping the support 1 on the support base 39 and for holding the assembled support on the support base 1.
  • the support 1 is not associated with a support base 39.
  • the second embodiment illustrated by FIGS. 13 and 14 differs from the first embodiment in that the upper face 5 of the heat sink 17 is in thermal contact with a first dissipating medium 371, and the lower face of the heat sink 17 is in thermal contact. with a second dissipating medium 372 different from the first dissipating medium 371.
  • the support 1 is as described in the first embodiment.
  • the upper face 5 of the support 1 is in contact with the first dissipating medium 371.
  • the first dissipating medium 371 is, for example, ambient air.
  • the second dissipating medium 372 is a thermally conductive medium of higher thermal conductivity than that of the first dissipating medium.
  • the second dissipating medium is a thermally conductive silicone medium. In this way, the heat dissipation is considerably improved.
  • the support may comprise an electrically insulated and thermally conductive interface capable of connecting the support to a second dissipating medium.
  • an electrically isolated but thermally conductive adhesive element capable of connecting the support 1 to a second heat sink medium, in particular a metal dissipative material such as aluminum.
  • the electrical connection is established by the support 1 according to the variants described in the first embodiment.
  • the support 1 may have positioning means 22a, 22b of the LED 3 as described in the first embodiment.
  • the support 1 is assembled to a variant of the support base 39, for example made of a thermally conductive material.
  • a thermally conductive material for example a silicone having a high thermal conductivity.
  • the support base 39 comprises a profile, for example made of thermally conductive silicone, capable of receiving a plurality of supports 1.
  • the silicone has a great flexibility, which ensures the passage of angles.
  • the profile is for example obtained by extrusion.
  • the upper face of the support base 39 has a housing 59 substantially centered towards the middle of the support base 39 along the transverse axis OY.
  • This housing 59 comprises a first bearing 591 and a second bearing 592.
  • the first bearing 591 is located below the second bearing 592 along the vertical axis 02.
  • the width and height of the first bearing 591 can accommodate the flexible sheet 211.
  • the flexible sheet 211 may be overmolded in the profile during extrusion.
  • the width and height of the second bearing 592 can accommodate the support 1.
  • the support base 39 therefore comprises the second dissipating medium 372.
  • a plurality of supports 1 may be connected to the flexible web 211 to form an LED light strip 231.
  • connection means 20 allow to assemble the support 1 to the flexible sheet 211.
  • the pins 201 (not shown in this figure) pass through the flexible sheet 211 and then pierce the support base 39.
  • the silicone being less rigid than the plastic, it it is not necessary to make slots beforehand to accommodate the pins 201.
  • connection means 20 constrain the movement of the support 1 along the longitudinal axis OX and the transverse axis OY.
  • An alternative assembly means 53 is provided to constrain the movement of the support 1, in particular the vertical movement of the support 1, that is to say along the vertical axis 02.
  • the assembly means 53 comprise by a longitudinal groove extruded on the inner face of the side walls 61 of the support base 39.
  • the height along the vertical axis 02 of the longitudinal grooves is substantially equal to the thickness of the support 1. Such grooves are visible in the figures 13, 14 and 16.
  • the longitudinal grooves may also receive a film (not shown) to make the LED light strip 231 waterproof.
  • This film in contact with the upper face 5 of the support can also serve as the first dissipating medium 371.
  • the LED light band 231 does not have a plurality of point sources, but appears as a continuous light band.
  • the upper face 63 of the side walls 61 may have an inclined slope towards the inside of the support base 39.
  • the support base 39 may also have attachment means 47 for attaching to an outer member 65 as shown in Figure 15.
  • the outer member 65 may be a wood plate or a fixing rail.
  • the fixing means 47 comprise, for example, a rib extending along the length of the support base 39.
  • the outer element 65 may comprise complementary fixing means 67.
  • the outer element 65 comprises a groove of complementary shape to the fixing rib of the base In the example, the groove is rectilinear.
  • Complementary fastening means 67 can also be made to describe a circle or any other shape.
  • These fixing means 47 are easy to make and simplify the assembly of the electronic component strip 17 with an outer element 65 such as a ceiling or a frame.
  • the silicone profile can be cut to form a plurality of individual support bases 39.
  • silicone zones can be made on a support base 39 of insulating material in order to improve the heat dissipation.
  • connection means 20 extend from the upper face 5 of the heat sink 17 in contact with a first dissipating medium 371 towards the first dissipating medium. 371, here the air, and no longer to the second dissipating medium 372, such as a thermally conductive silicone medium.
  • connection means 20 in particular the pins 201, are oriented upwards along the axis 02 of the mark represented.
  • the heat dissipation is considerably improved. Indeed, the entire lower face 7 is used for heat dissipation by being in contact with a second dissipating medium 372, different from the first dissipating medium 371.
  • the second dissipating medium 372 is for example of higher thermal conductivity than that of the first heat sink medium 371.
  • connection means 20 are not located at the connection area 8 of the support 1 with the LED 3 as in the example of Figure 1 but at the lateral extension of this connection area 8 forming the heat sink 17.
  • an interface such as an electrically isolated but thermally conductive adhesive element able to connect the support 1 to a second heat sink medium, in particular a metal dissipative medium such as aluminum.
  • the fourth embodiment illustrated in FIGS. 17a to 19 differs from the third embodiment in that the support 1 further comprises a guide 400 for the connection means 20 comprising, for example, the pins 201.
  • the guide 400 is advantageously made in the form of a guide housing made of an insulating material such as plastic.
  • the guide 400 in the form of a housing can be inserted around the flexible ply 21 and be fixed to the support 1 for example by means of the spikes 201.
  • This guide 400 makes it possible in particular to guide and hold in position the connection means 20, here the two pins 201, when connected to the flexible wiring means 21 (see FIG. 18) to prevent the pins 201 from diverging and thus ensure that the conductive tracks 10 are properly stripped.
  • the pins 201 may also be folded over the guide 400 to improve the mechanical strength, as can be seen in Figures 17b and 19.
  • the support 1 is assembled to a support base 39 (cf. FIGS. 18-19) made for example in a thermally conductive material, such as a silicone or having at least one second thermally conductive medium, having a high thermal conductivity, greater than the thermal conductivity of the first medium 371 such as ambient air.
  • a thermally conductive material such as a silicone or having at least one second thermally conductive medium, having a high thermal conductivity, greater than the thermal conductivity of the first medium 371 such as ambient air.
  • the support base 39 may comprise a thermally conductive silicone profile capable of accommodating a plurality of supports 1 as described above with reference to FIG. 14, comprising the second dissipating medium 372.
  • connection support 1 comprising a heat sink 17 allows to dissipate the heat generated by the LED 3 in a simple and effective manner.
  • the support 1 also allows a simplified electrical connection between the LED 3 and one or more conductive tracks 10, while ensuring good mechanical strength.
  • the support 1 can easily be assembled to a support base 39 on the one hand to increase its mechanical strength and on the other hand to be attached to an external element.
  • the support base 39 can furthermore improve the heat dissipation of the support 1, in particular by having a second thermally conductive medium 372 of thermal conductivity greater than that of a first medium 371 of thermal conductivity such as air, and with which one of the 7 faces of the heat sink 17 is in contact.
  • Such a support 1 offers great flexibility in the choice of the implementation of the LEDs 3 on the wiring means 21, 211, 212.
  • the support 1 connected to the conductive tracks 10 of a flexible sheet 211 or a wiring wire makes it possible to obtain an assembly, such as a flexible flexible strip 23, 231 which is more flexible than with an embodiment on a circuit. printed.
  • this support 1 is simple to manufacture and assemble.

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  • Led Device Packages (AREA)

Abstract

Connection support (1) for light-emitting diode (3) comprising: - an electrical connection zone (8) intended to receive said light-emitting diode (3), - two neighbouring metallic parts (9, 11) electrically insulated from one another and each comprising a part of the connection zone (8) intended to be in contact with a corresponding electrical contact of the light-emitting diode (3), each part (9, 11) exhibiting on the one hand a transpiercing connection means (20) intended to transpierce an insulated electrical conductor (10) so as to ensure the electrical power supply to the light-emitting diode (3), and on the other hand a lateral extension forming a thermal dissipater (17), said thermal dissipater (17) comprising an upper face (5) and a lower face (7). According to the invention, said upper face (5) is intended to be in thermal contact with a first dissipating medium (371) and said lower face (7) is intended to be in thermal contact with a second dissipating medium (372) different from the first dissipating medium (371) and of higher thermal conductivity. The invention also relates to a flexible band comprising at least one such connection support (1).

Description

Support de connexion pour diode électroluminescente et bande flexible  Connection bracket for light-emitting diode and flexible strip
correspondante La présente invention est relative à un support de connexion pour composants électroniques.  The present invention relates to a connection support for electronic components.
L'invention permet de réaliser une bande lumineuse flexible lumineuse comportant une pluralité de diodes électroluminescentes autrement appelées LED (« Light Emitting Diode » en langue anglaise).  The invention makes it possible to produce a light flexible light strip comprising a plurality of light-emitting diodes, otherwise known as LEDs ("Light Emitting Diode" in the English language).
Les LED sont des composants électroniques capables d'émettre de la lumière quand elles sont traversées par un courant électrique. Un des facteurs influençant le rendement lumineux d'une LED est sa température de fonctionnement. Plus cette température de fonctionnement est basse, et plus le rendement lumineux est élevé.  LEDs are electronic components capable of emitting light when an electric current passes through them. One of the factors influencing the light output of an LED is its operating temperature. The lower this operating temperature, the higher the light output.
Une LED convertit une partie de l'énergie électrique qu'elle reçoit en lumière, le reste est dégagé sous forme de chaleur. Si cette chaleur s'accumule à proximité de la LED, alors la température de fonctionnement de la LED augmente, et les performances de la LED se dégradent.  An LED converts some of the electrical energy it receives into light, the rest is released as heat. If this heat accumulates near the LED, then the operating temperature of the LED increases, and the performance of the LED degrades.
Ainsi, les LED sont traditionnellement, connectées à un dissipateur thermique comprenant un bloc en métal tel que de l'aluminium ou du cuivre. Le dissipateur thermique présente des ailettes extrudées dans le bloc de métal afin d'augmenter la surface d'échange thermique entre le dissipateur et -par exemple- l'air extérieur.  Thus, the LEDs are traditionally connected to a heat sink comprising a metal block such as aluminum or copper. The heat sink has fins extruded into the metal block to increase the heat exchange surface between the sink and-for example, outside air.
Un inconvénient des dissipateurs thermiques de l'art antérieur est qu'ils ne permettent pas d'établir une connexion électrique directe avec les LED.  A disadvantage of heat sinks of the prior art is that they do not make it possible to establish a direct electrical connection with the LEDs.
Un autre inconvénient est que leur taille et leur forme ne permettent pas une grande souplesse dans le positionnement des LED.  Another disadvantage is that their size and shape do not allow a great flexibility in the positioning of the LEDs.
Traditionnellement, la bande est réalisée à l'aide d'un circuit imprimé sur lequel les composants, et notamment les LED, sont soudés.  Traditionally, the strip is made using a printed circuit on which the components, including LEDs, are soldered.
On connaît des circuits imprimés dits flexibles. Cependant de tels circuits imprimés, conservent une certaine rigidité qui peut être gênante lors de l'installation de la bande lumineuse, par exemple pour le passage d'angle.  So-called flexible printed circuits are known. However, such printed circuits retain a certain rigidity which can be troublesome during the installation of the light strip, for example for the corner passage.
De plus, le positionnement précis des LED est prédéterminé ce qui diminue la modularité de réalisation d'une telle bande lumineuse. L'invention vise à proposer un support de connexion polyvalent permettant de pallier un ou plusieurs inconvénients de l'art antérieur. In addition, the precise positioning of the LEDs is predetermined which reduces the modularity of realization of such light strip. The invention aims to provide a versatile connection support for overcoming one or more disadvantages of the prior art.
A cet effet, l'invention a pour objet un support de connexion pour diode électroluminescente comprenant : une zone de connexion électrique destinée à recevoir ladite diode électroluminescente, caractérisé en ce qu'il comprend deux parties métalliques voisines isolées électriquement l'une de l'autre et formant chacune une partie de la zone de connexion destinée à être en contact avec un contact électrique correspondant de la diode électroluminescente, chaque partie présentant d'une part un moyen de connexion transperçant destiné à transpercer un conducteur électrique isolé pour assurer l'alimentation électrique de la diode électroluminescente, et d'autre part un prolongement latéral formant un dissipateur thermique.  For this purpose, the subject of the invention is a connection support for an electroluminescent diode comprising: an electrical connection zone intended to receive said light-emitting diode, characterized in that it comprises two adjacent metal parts electrically insulated from one of the electroluminescent diode, another and each forming part of the connection area intended to be in contact with a corresponding electrical contact of the light-emitting diode, each portion having on the one hand a piercing connection means for piercing an insulated electrical conductor for supplying power electroluminescent diode, and on the other hand a lateral extension forming a heat sink.
Selon l'invention, ledit dissipateur thermique comprend une face supérieure et une face inférieure, ladite face supérieure étant destinée à être en contact thermique avec un premier milieu dissipateur et ladite face inférieure étant destinée à être en contact thermique avec un deuxième milieu dissipateur différent du premier milieu dissipateur et de conductivité thermique plus élevée.  According to the invention, said heat sink comprises an upper face and a lower face, said upper face being intended to be in thermal contact with a first dissipating medium and said lower face being intended to be in thermal contact with a second dissipating medium different from the first dissipating medium and higher thermal conductivity.
Le dissipateur thermique étant en contact thermique avec deux milieux dissipateurs thermiques différents, la dissipation de la chaleur générée par la diode électroluminescente est considérablement améliorée.  Since the heat sink is in thermal contact with two different heat dissipating media, the heat dissipation generated by the light-emitting diode is considerably improved.
Selon un mode de réalisation, le moyen de connexion est agencé au niveau de la zone de connexion et s'étend depuis la face opposée à la face dudit support destinée à recevoir la diode électroluminescente.  According to one embodiment, the connection means is arranged at the connection area and extends from the face opposite the face of said support for receiving the light emitting diode.
Selon un autre mode de réalisation, le moyen de connexion est agencé dans le prolongement latéral de la zone de connexion et s'étend depuis la face dudit support destinée à recevoir la diode électroluminescente.  According to another embodiment, the connection means is arranged in the lateral extension of the connection zone and extends from the face of said support for receiving the light emitting diode.
Selon un autre aspect du support de connexion, ledit au moins un moyen de connexion est réalisé selon la technologie IDC pour « Insulation-displacement connecter » en anglais, et ledit au moins un moyen de connexion dudit support est configuré pour transpercer un moyen de câblage souple en dénudant ledit moyen de câblage souple de façon à être en contact avec un conducteur électrique dudit moyen de câblage souple. According to another aspect of the connection support, said at least one connection means is made according to the IDC technology for "Insulation-displacement connect" in English, and said at least one connection means of said support is configured to pierce a wiring means flexible by stripping said flexible wiring means so as to be in contact with an electrical conductor of said means for flexible wiring.
Selon un autre aspect du support de connexion, le moyen de câblage souple comprend une nappe souple ou un fil de câblage.  In another aspect of the connection support, the flexible wiring means comprises a flexible web or a wiring wire.
Selon un autre aspect du support de connexion, le support de connexion est assemblé avec une base de support configurée pour améliorer la tenue mécanique dudit support.  According to another aspect of the connection support, the connection support is assembled with a support base configured to improve the mechanical strength of said support.
Selon un autre aspect du support de connexion, la base de support est configurée pour être traversée par ladite nappe souple.  According to another aspect of the connection support, the support base is configured to be traversed by said flexible sheet.
Selon un autre aspect du support de connexion, la base de support comprend au moins un moyen d'assemblage configuré pour maintenir la base de support avec le support et comprenant au moins une rainure apte à contraindre le mouvement du support.  According to another aspect of the connection support, the support base comprises at least one assembly means configured to hold the support base with the support and comprising at least one groove capable of constraining the movement of the support.
Selon un mode de réalisation, la base de support présente une forme générale sensiblement parallélépipédique et le moyen d'assemblage comprend au moins une rainure longitudinale apte à contraindre un mouvement vertical du support.  According to one embodiment, the support base has a generally parallelepipedal general shape and the assembly means comprises at least one longitudinal groove capable of constraining a vertical movement of the support.
Cette rainure, par exemple longitudinale, permet de clipser de façon simple et rapide le support sur la base de support, et de le maintenir facilement sans nécessiter d'outil supplémentaire ou de pièce supplémentaire.  This groove, for example longitudinal, allows to simply and quickly clip the support on the support base, and to maintain easily without requiring additional tool or additional piece.
Selon un autre aspect du support de connexion, la base de support comprend des moyens de fixation configurés pour maintenir la base de support avec un élément extérieur.  In another aspect of the connection support, the support base includes attachment means configured to maintain the support base with an outer member.
Selon un autre aspect du support de connexion, la base de support est un matériau isolant.  According to another aspect of the connection support, the support base is an insulating material.
Selon un autre aspect du support de connexion, la base de support comprend des ouvertures traversantes afin d'améliorer la dissipation thermique.  In another aspect of the connection support, the support base includes through openings to improve heat dissipation.
Selon un autre aspect du support de connexion, le deuxième milieu dissipateur est un matériau thermiquement conducteur.  According to another aspect of the connection support, the second dissipating medium is a thermally conductive material.
Selon un autre aspect du support de connexion, le deuxième milieu dissipateur est une silicone thermiquement conductrice.  According to another aspect of the connection support, the second dissipating medium is a thermally conductive silicone.
Selon un autre aspect du support de connexion, le support comporte une interface isolée électriquement et conductrice thermiquement apte à connecter le support au deuxième milieu dissipateur. According to another aspect of the connection support, the support comprises a electrically insulated and thermally conductive interface capable of connecting the support to the second dissipating medium.
L'interface peut être réalisée sous la forme d'un élément adhésif électriquement isolé et conducteur thermique.  The interface may be in the form of an electrically isolated and thermally conductive adhesive element.
Le deuxième milieu dissipateur est par exemple un matériau métallique tel que de l'aluminium.  The second dissipating medium is for example a metallic material such as aluminum.
Selon un autre aspect du support de connexion, ladite face inférieure est en contact avec la base du support.  According to another aspect of the connection support, said lower face is in contact with the base of the support.
Selon un autre aspect du support de connexion, la base du support comprend le deuxième milieu dissipateur.  According to another aspect of the connection support, the base of the support comprises the second dissipating medium.
Selon un autre aspect du support de connexion, le support de connexion présente au moins un moyen de positionnement afin de contraindre le déplacement de la diode électroluminescente.  According to another aspect of the connection support, the connection support has at least one positioning means in order to constrain the displacement of the light-emitting diode.
Selon un autre aspect du support de connexion, le dissipateur thermique présente une surface supérieure à 200 mm2. According to another aspect of the connection support, the heat sink has a surface greater than 200 mm 2 .
Selon un mode de réalisation, le support comprend un guide du moyen de connexion configuré pour guider et maintenir en position le moyen de connexion lors de la connexion sur le moyen de câblage souple.  According to one embodiment, the support comprises a guide of the connection means configured for guiding and holding in position the connecting means during connection to the flexible wiring means.
Le guide est par exemple réalisé en un matériau isolant, tel que du plastique. L'invention concerne également une bande flexible comportant une nappe souple présentant des pistes conductrices, caractérisée en ce qu'elle comporte en outre au moins un support de connexion portant au moins une diode électroluminescente, ledit au moins un support étant tel que défini précédemment.  The guide is for example made of an insulating material, such as plastic. The invention also relates to a flexible strip comprising a flexible sheet having conductive tracks, characterized in that it further comprises at least one connection support carrying at least one light emitting diode, said at least one support being as defined above.
D'autres caractéristiques et avantages de l'invention ressortiront de la description suivante, donnée à titre d'exemple, sans caractère limitatif, en regard des dessins annexés sur lesquels :  Other features and advantages of the invention will emerge from the following description given by way of example, without limitation, with reference to the accompanying drawings, in which:
la figure 1 représente une vue en perspective d'un support de connexion pour diode électroluminescente présentant des moyens de connexion électrique orientés selon une première direction,  FIG. 1 represents a perspective view of a connection support for a light-emitting diode having electrical connection means oriented in a first direction;
- la figure 2 représente une vue en perspective d'une partie du support, la figure 3a représente une bande métallique à partir de laquelle est fabriqué le support, FIG. 2 represents a perspective view of part of the support, FIG. 3a shows a metal strip from which the support is manufactured,
la figure 3b représente une bande métallique mise en forme afin de former des parties de support,  FIG. 3b shows a metal strip shaped to form support portions,
- la figure 4a représente une vue de dessus d'une bande de supports comprenant deux bandes métalliques mises en forme, FIG. 4a is a plan view of a strip of supports comprising two shaped metal strips,
la figure 4b représente une vue de dessous de la bande de supports, la figure 5 représente une partie de la bande de supports sur laquelle des LED ont été assemblées, et un support découpé dans la bande de supports, - la figure 6 représente une vue en perspective de moyens de connexion électrique permettant de connecter le support à un moyen de câblage souple et des moyens d'assemblage permettant d'assembler le support à une base de support,  FIG. 4b shows a bottom view of the carrier strip, FIG. 5 shows a portion of the carrier strip on which LEDs have been assembled, and a carrier cut out of the carrier strip; FIG. in perspective of electrical connection means for connecting the support to a flexible wiring means and assembly means for assembling the support to a support base,
la figure 7 représente une bande lumineuse flexible telle qu'obtenue en connectant une pluralité de LED à un moyen de câblage souple grâce à des supports et des bases de supports,  FIG. 7 shows a flexible light strip as obtained by connecting a plurality of LEDs to a flexible wiring means with supports and support bases,
la figure 8 représente une variante des moyens de connexion électrique du support et une variante de base de support,  FIG. 8 represents a variant of the electrical connection means of the support and a variant of the support base,
la figure 9 représente des moyens de positionnement permettant de position- ner la LED sur le support,  FIG. 9 represents positioning means for positioning the LED on the support,
la figure 10 représente une variante de base de support,  FIG. 10 represents a variant of a support base,
la figure 11 représente une vue de dessous d'une variante des moyens d'assemblage du support avec la base du support,  FIG. 11 represents a view from below of a variant of the means for assembling the support with the base of the support,
la figure 12 représente une vue de dessus d'une variante de la base de sup- port,  FIG. 12 represents a view from above of a variant of the support base,
la figure 13 représente la bande lumineuse flexible selon un deuxième mode de réalisation,  FIG. 13 represents the flexible light strip according to a second embodiment,
la figure 14 représente la bande lumineuse flexible assemblée à un élément extérieur, la figure 15 représente une variante du support de connexion pour diode électroluminescente présentant des moyens de connexion électrique orientés selon une deuxième direction opposée à la première direction, FIG. 14 represents the flexible light strip assembled to an external element, FIG. 15 represents a variant of the connection support for light-emitting diode having electrical connection means oriented in a second direction opposite to the first direction,
la figure 16 représente un troisième mode de réalisation de la bande lumi- neuse flexible avec un support de connexion pour diode électroluminescente présentant des moyens de connexion électrique orientés selon la deuxième direction,  FIG. 16 shows a third embodiment of the flexible light strip with a light-emitting diode connection carrier having electrical connection means oriented in the second direction;
la figure 17a est une vue de dessous d'un support de connexion pour diode électroluminescente selon un quatrième mode de réalisation, comprenant un guide pour les moyens de connexion,  FIG. 17a is a view from below of a light-emitting diode connection support according to a fourth embodiment, comprising a guide for the connection means,
la figure 17b est une vue de dessus du support de connexion de la figure 17a, la figure 18 représente le support de connexion de la figure 17b assemblé sur un profilé et dont les moyens de connexion ne sont pas repliés sur le guide, la figure 19 représente le support de connexion de la figure 18 assemblé sur le profilé et dont les moyens de connexion sont repliés sur le guide. FIG. 17b is a view from above of the connection support of FIG. 17a, FIG. 18 shows the connection support of FIG. 17b assembled on a profile and whose connection means are not folded over the guide, FIG. represents the connection support of Figure 18 assembled on the profile and whose connection means are folded over the guide.
Dans ces dessins et dans la suite de la description, les éléments sensiblement identiques sont identifiés par les mêmes numéros de référence. In these drawings and in the remainder of the description, the substantially identical elements are identified by the same reference numerals.
L'invention concerne un support de connexion 1 portant au moins une diode électroluminescente 3, connue sous le sigle LED.  The invention relates to a connection support 1 carrying at least one light emitting diode 3, known under the acronym LED.
Le support de connexion est capable d'assurer les fonctions suivantes :  The connection medium is capable of performing the following functions:
❖ la connexion électrique de la LED à au moins deux pistes conductrices, ❖ the electrical connection of the LED to at least two conductive tracks,
❖ la dissipation thermique de la chaleur émise par la LED, ❖ the heat dissipation of the heat emitted by the LED,
❖ l'amélioration de la tenue mécanique de la LED.  ❖ improving the mechanical strength of the LED.
Différents modes de réalisation du support vont maintenant être décrits de manière à expliquer comment le support 1 assure ces fonctions.  Various embodiments of the support will now be described so as to explain how the support 1 provides these functions.
1. Premier mode de réalisation  1. First embodiment
a. Connexion électrique  at. Electrical connection
En référence à la figure 1, l'invention concerne un support de connexion 1 pour With reference to FIG. 1, the invention relates to a connection support 1 for
LED 3. LED 3.
Le support de connexion 1 comprend une face supérieure 5, par exemple sensiblement plane et une face inférieure 7, par exemple sensiblement plane, parallèle à la face supérieure 5. The connection support 1 comprises an upper face 5, for example substantially flat and a lower face 7, for example substantially flat, parallel to the upper face 5.
La face supérieure 5 comprend une zone de connexion 8, délimitée par des tirets sur cet exemple, destinée à recevoir la LED 3. Bien sur, la zone de connexion 8 peut différer selon les supports de connexion 1.  The upper face 5 comprises a connection zone 8, delimited by dashes in this example, intended to receive the LED 3. Of course, the connection zone 8 may differ according to the connection supports 1.
Le support 1 est distinct de la LED 3. Ceci permet d'utiliser des LED 3 telles que disponibles dans le commerce.  The support 1 is distinct from the LED 3. This makes it possible to use LEDs 3 as commercially available.
Le support 1 comprend deux parties 9, 11 : une première partie 9 et une deuxième partie 11 voisines. La première partie 9 et la deuxième partie 11 sont adjacentes, c'est-à-dire elles se trouvent dans le voisinage immédiat l'une de l'autre. Chacune des deux parties 9, 11 comprend une partie de la zone de connexion 8.  The support 1 comprises two parts 9, 11: a first portion 9 and a second portion 11 adjacent. The first part 9 and the second part 11 are adjacent, that is to say they are in the immediate vicinity of one another. Each of the two parts 9, 11 comprises a part of the connection zone 8.
Les deux parties 9, 11 sont connectées à des contacts électriques (non représentés) de la LED 3. Par exemple la première partie 9 est connectée à une anode, et la deuxième partie 11 est connectée à une cathode de la LED 3.  The two parts 9, 11 are connected to electrical contacts (not shown) of the LED 3. For example the first part 9 is connected to an anode, and the second part 11 is connected to a cathode of the LED 3.
Les deux parties 9, 11 sont électriquement isolées l'une de l'autre afin d'éviter les courts-circuits. Pour cela, les deux parties 9, 11 sont séparées par une région isolante 13. Cette région isolante 13 est par exemple de l'air. Dans ce cas, les deux parties 9, 11 sont distinctes l'une de l'autre.  The two parts 9, 11 are electrically isolated from each other to avoid short circuits. For this, the two parts 9, 11 are separated by an insulating region 13. This insulating region 13 is for example air. In this case, the two parts 9, 11 are distinct from each other.
La figure 2 représente une partie 9, 11. Une telle partie 9,11 peut être obtenue par une mise en forme et une découpe d'une bande métallique 15.  FIG. 2 represents a part 9, 11. Such a part 9, 11 can be obtained by shaping and cutting a metal strip 15.
La bande métallique 15, représentée par la figure 3a, comprend par exemple une bande de cuivre ou d'alliage de cuivre. En effet le cuivre possède une bonne conductivité thermique, ce qui permet une dissipation de la chaleur efficace. L'épaisseur e de la bande métallique 15 est par exemple de l'ordre de 0,2mm.  The metal strip 15, represented by FIG. 3a, comprises, for example, a copper or copper alloy strip. Indeed the copper has a good thermal conductivity, which allows a dissipation of the effective heat. The thickness e of the metal strip 15 is for example of the order of 0.2 mm.
On définit un axe longitudinal O selon la longueur de la bande métallique 15, un axe transversal OY selon la largeur de la bande métallique 15, et un axe vertical OZ selon l'épaisseur de la bande métallique 15. Ces trois axes sont sensiblement orthogonaux et présentent la même origine O. Ces trois axes OX, OY, OZ servent de référence pour toutes les figures comprises dans la présente.  A longitudinal axis O is defined according to the length of the metal strip 15, a transverse axis OY according to the width of the metal strip 15, and a vertical axis OZ according to the thickness of the metal strip 15. These three axes are substantially orthogonal and have the same origin O. These three axes OX, OY, OZ serve as reference for all the figures included herein.
On définit la zone de connexion 8 dans cet exemple sur la face supérieure 5 de la bande métallique 15. Le reste de la bande métallique comprend un dissipateur thermique 17. We define the connection zone 8 in this example on the upper face 5 of the metal strip 15. The remainder of the metal strip includes a heat sink 17.
Une bande métallique mise en forme est représentée par la figure 3b.  A shaped metal strip is shown in Figure 3b.
La mise en forme peut être réalisée sur un outil de découpe progressif ou un outil à suivre.  The formatting can be performed on a progressive cutting tool or a tool to follow.
La mise en forme comprend par exemple une étape de poinçonnage, lors de laquelle on poinçonne le dissipateur thermique 17 afin d'obtenir des ouvertures 19. Ces ouvertures 19 servent par la suite à entraîner la bande métallique 15 sur des éléments d'outillage grâce à des organes de traction (non représentés).  The shaping comprises, for example, a punching step, during which the heat sink 17 is punched in order to obtain openings 19. These openings 19 serve subsequently to drive the metal strip 15 onto tooling elements by means of traction members (not shown).
La mise en forme de la bande métallique 15 peut aussi comprendre une étape de découpe à l'issue de laquelle on obtient un ou des moyens de connexion 20, permettant la connexion électrique du support 1, comme seront décrits en détail par la suite.  The shaping of the metal strip 15 may also include a cutting step at the end of which one or more connection means 20 are obtained, allowing the electrical connection of the support 1, as will be described in detail below.
Les moyens de connexion 20 peuvent être situés au niveau de la zone de connexion 8 tel qu'illustré sur la figure 1.  The connection means 20 may be located at the connection zone 8 as illustrated in FIG.
La mise en forme de la bande métallique 15 peut aussi comprendre une étape de pliage, lors de laquelle les moyens de connexion 20 sont repliés sensiblement perpendiculairement à la bande métallique 15 et vers le bas suivant l'axe vertical 02.  The shaping of the metal strip 15 may also comprise a folding step, during which the connecting means 20 are folded substantially perpendicularly to the metal strip 15 and downwards along the vertical axis 02.
La bande métallique mise en forme comprend une pluralité de parties 9,11 de support 1 identiques.  The shaped metal strip comprises a plurality of identical support parts 9, 11.
En mettant en opposition deux bandes métalliques mises en forme, on obtient une bande de supports 16. Cette bande de supports 16 comporte une pluralité de supports 1, et chaque support comprend deux parties 9, 11.  By opposing two shaped metal strips, a strip of supports 16 is obtained. This strip of supports 16 comprises a plurality of supports 1, and each support comprises two parts 9, 11.
Selon une variante, la première partie 9 et la deuxième partie 11 présentent une forme similaire. De ce fait, on peut mettre en opposition deux bandes métalliques mises en forme similairement, comme représenté par la figure 4a. Ceci permet de réaliser un seul modèle de partie de support 1 et donc de simplifier la réalisation du support 1 et de réduire les coûts de fabrication.  According to a variant, the first portion 9 and the second portion 11 have a similar shape. As a result, two metal strips similarly shaped can be contrasted as shown in FIG. 4a. This makes it possible to produce a single support part model 1 and thus simplify the production of the support 1 and to reduce manufacturing costs.
Selon une autre variante, les deux parties 9, 11 présentent des formes différentes According to another variant, the two parts 9, 11 have different shapes
(non représentées). Ceci permet une meilleure adaptation de la forme du support 1, plus particulièrement de la zone de connexion 8, en fonction de la LED 3 à accueillir. La figure 4b représente une vue de dessous d'une bande de supports 16. Cette figure 4b permet de voir plus distinctement les moyens de connexion 20 ainsi que la face inférieure 7 du dissipateur thermique 17. (not shown) This allows a better adaptation of the shape of the support 1, more particularly of the connection zone 8, depending on the LED 3 to accommodate. FIG. 4b represents a view from below of a strip of supports 16. This FIG. 4b makes it possible to see more clearly the connection means 20 as well as the lower face 7 of the heat sink 17.
Les moyens de connexion 20 peuvent s'étendre depuis la face du support opposée à la face destinée à recevoir la LED 3, ici la face inférieure 7, comme dans l'exemple illustré sur les figures 4b à 6, ou en alternative, les moyens de connexion 20 peuvent s'étendre depuis la face destinée à recevoir la LED 3, ici la face supérieure 5, comme dans l'exemple de la figure 15.  The connection means 20 may extend from the face of the support opposite to the face intended to receive the LED 3, in this case the lower face 7, as in the example illustrated in FIGS. 4b to 6, or alternatively, the means connection 20 can extend from the face intended to receive the LED 3, here the upper face 5, as in the example of Figure 15.
On se réfère maintenant de nouveau à la figure 5.  Reference is now made to FIG. 5 again.
Les LED 3 sont assemblées par soudure sur les bandes de supports 16.  The LEDs 3 are welded together on the support strips 16.
Les LED 3 peuvent être un modèle courant tel que disponible dans le commerce. La LED 3 peut être une LED 3 de forte puissance, c'est-à-dire de puissance supérieure à 1W.  LEDs 3 may be a standard model as commercially available. The LED 3 can be a LED 3 of high power, that is to say of power greater than 1W.
La bande de supports 16 est découpée, de façon à obtenir des supports 1 individuels.  The support strip 16 is cut, so as to obtain individual supports 1.
On se réfère maintenant à la figure 6. Le support 1 connecte la LED 3 à des conducteurs électriques 10, tels que des pistes conductrices 10, d'un moyen de câblage souple 21 grâce à ses moyens de connexion électrique 20.  Referring now to FIG. 6, the support 1 connects the LED 3 to electrical conductors 10, such as conductive tracks 10, of a flexible wiring means 21 thanks to its electrical connection means 20.
Selon une variante, le moyen de câblage souple 21 comprend une nappe souple 211. Une nappe souple 211 est un composant électronique standard et peu coûteux, présentant une pluralité de pistes conductrices 10 entourées d'une gaine de protection isolante 12.  According to one variant, the flexible wiring means 21 comprises a flexible sheet 211. A flexible sheet 211 is a standard and inexpensive electronic component, having a plurality of conductive tracks 10 surrounded by an insulating protective sheath 12.
Les moyens de connexion 20 forment par exemple un angle sensiblement droit avec la face supérieure 5 du support 1, et s'étendent vers le bas selon l'axe vertical 02 dans l'exemple de la figure 6 ou au contraire vers le haut selon l'axe vertical 02 dans l'exemple de la figure 15.  The connection means 20 form, for example, a substantially straight angle with the upper face 5 of the support 1, and extend downwards along the vertical axis 02 in the example of FIG. 6 or on the contrary upwards according to FIG. vertical axis 02 in the example of FIG.
Les moyens de connexion 20 peuvent par exemple être réalisés selon la technologie IDC pour « Insulation-displacement connector » en anglais.  The connection means 20 may for example be made according to the IDC technology for "Insulation-displacement connector" in English.
Dans ce cas, les moyens de connexion 20 comportent par exemple des pattes de connexion terminées par des picots 201 qui dénudent la nappe 211 en la transperçant. De la sorte, il n'y a pas besoin de dénuder au préalable la nappe souple 211. In this case, the connection means 20 comprise for example connecting lugs terminated by pins 201 which strip the web 211 by piercing it. In this way, there is no need to previously strip the flexible sheet 211.
Selon une variante, les picots 201 peuvent être repliés par sertissage en direction de la nappe souple 211.  According to one variant, the pins 201 can be folded by crimping in the direction of the flexible sheet 211.
Selon une autre variante (non représentée), les moyens de connexion 20 comprennent des pattes de connexion ne présentant pas de picots 201. Dans ce cas, la nappe souple 211 est dénudée au préalable.  According to another variant (not shown), the connection means 20 comprise connecting lugs not having pins 201. In this case, the flexible ply 211 is stripped beforehand.
La connexion électrique entre le support 1 et les pistes conductrices 10 est réalisée de manière automatique.  The electrical connection between the support 1 and the conductive tracks 10 is performed automatically.
Selon une variante, cette connexion électrique est réalisée manuellement.  According to one variant, this electrical connection is made manually.
Ces moyens de connexion 20 offrent un grand choix au client final quant à la disposition des LED 3 sur la nappe souple 211, par exemple pour former une bande flexible lumineuse 23 telle que représentée par la figure 7.  These connection means 20 offer a large choice to the end customer as to the arrangement of the LEDs 3 on the flexible sheet 211, for example to form a flexible flexible strip 23 as shown in FIG.
La flexibilité d'une telle bande lumineuse 23 permet une grande souplesse d'usage et permet par exemple de simplifier le passage d'angles.  The flexibility of such a light strip 23 allows a great flexibility of use and allows for example to simplify the passage of angles.
Dans une telle bande flexible lumineuse 23, les LED 3 peuvent être connectées en parallèle ou en série.  In such a flexible light strip 23, the LEDs 3 can be connected in parallel or in series.
Selon une autre variante illustrée par la figure 8, le moyen de câblage 21 comprend des fils de câblage 212.  According to another variant illustrated in FIG. 8, the wiring means 21 comprises wiring wires 212.
Le support 1 connecte électriquement chaque contact électrique de la LED 3 à un fil de câblage 212 comportant une unique piste conductrice entourée d'une gaine isolante (non représentées). Chacune des parties 9, 11 du support 1 comprend des moyens de connexion 20 présentant des picots 201. Selon cette variante, les moyens de connexion 20 s'étendent dans un plan défini par les axes longitudinal OX et transversal OY. La connexion électrique est établie en repliant les picots 201 afin de transpercer la gaine isolante du fil de câblage et d'entrer en contact avec la piste conductrice.  The support 1 electrically connects each electrical contact of the LED 3 to a wiring wire 212 having a single conductive track surrounded by an insulating sheath (not shown). Each of the parts 9, 11 of the support 1 comprises connection means 20 having pins 201. In this variant, the connection means 20 extend in a plane defined by the longitudinal axes OX and transverse OY. The electrical connection is established by folding the pins 201 to pierce the insulating sheath of the wiring wire and come into contact with the conductive track.
Une pluralité de LED 3 peut ainsi être connectée en série afin de former une bande lumineuse flexible de LED 3 qui elle aussi présente une grande souplesse d'usage.  A plurality of LEDs 3 can thus be connected in series in order to form a flexible LED light strip 3 which also has great flexibility of use.
Selon une variante (non représentée) une partie 9, 11 du support 1 comprend une pluralité de moyens de connexion 20 distincts. Ceci permet une connexion en parallèle -l l- cT une pluralité de LED 3. Une telle connexion en parallèle permet au client final de réaliser une grande diversité de motifs avec les LED 3. Selon une autre variante (non représentée), une pluralité de LED 3 peut être solidarisée à un unique support 1. Par exemple une première LED émettant une lumière rouge, une deuxième LED émettant une lumière verte, et une troisième LED émettant une lumière bleue, formant ainsi un ensemble RGB (de l'anglais « Red, Green, Blue). Le support 1 est alors configuré pour permettre alors la connexion électrique de la pluralité de LED 3. According to a variant (not shown) a part 9, 11 of the support 1 comprises a plurality of separate connection means 20. This allows a parallel connection A parallel connection allows the end customer to achieve a wide variety of patterns with the LEDs 3. According to another variant (not shown), a plurality of LEDs 3 can be secured to each other. a single support 1. For example a first LED emitting a red light, a second LED emitting a green light, and a third LED emitting a blue light, thus forming a set RGB (English "Red, Green, Blue). The support 1 is then configured to then allow the electrical connection of the plurality of LEDs 3.
b. Le dissipateur thermique  b. The heat sink
Par ailleurs, le support 1 comprend un dissipateur thermique 17. En effet, comme dit précédemment, la LED 3 est portée par la face supérieure 5 du support 1 au niveau de la zone de connexion 8 formée par les deux parties 9, 11.  Furthermore, the support 1 comprises a heat sink 17. Indeed, as previously said, the LED 3 is carried by the upper face 5 of the support 1 at the connection zone 8 formed by the two parts 9, 11.
Les deux parties 9, 11 du support 1 se prolongent latéralement selon l'axe transversal OY, au-delà de la zone de connexion 8 et forment ainsi un dissipateur thermique 17.  The two parts 9, 11 of the support 1 extend laterally along the transverse axis OY, beyond the connection zone 8 and thus form a heat sink 17.
En effet, la chaleur générée par la LED 3 en fonctionnement est transférée à la face supérieure 5 du support 1 par conduction. Afin d'assurer un transfert de chaleur optimal entre la LED 3 et la face supérieure 5, la LED 3 est fermement assemblée sur la face supérieure 5 par exemple grâce à une colle présentant une grande conductivité thermique, par exemple un gel à base de silicone.  Indeed, the heat generated by the LED 3 in operation is transferred to the upper face 5 of the support 1 by conduction. In order to ensure optimal heat transfer between the LED 3 and the upper face 5, the LED 3 is firmly assembled on the upper face 5 for example by means of an adhesive having a high thermal conductivity, for example a silicone-based gel. .
La chaleur est ensuite conduite dans le dissipateur thermique 17, puis transférée à au moins un milieu dissipateur 37 par l'intermédiaire du dissipateur thermique 17. Le milieu dissipateur 37 est un milieu dont la température est moins élevée que celle du dissipateur thermique 17.  The heat is then conducted in the heat sink 17, then transferred to at least one dissipating medium 37 via the heat sink 17. The dissipating medium 37 is a medium whose temperature is lower than that of the heat sink 17.
A cet effet, le dissipateur thermique 17 comprend la partie de la face supérieure 5 du support 1 hors zone de connexion 8, la face inférieure 7 du support 1 ainsi que les côtés du support 1 reliant la face supérieure 5 et la face inférieure 7.  For this purpose, the heat sink 17 comprises the part of the upper face 5 of the support 1 outside the connection zone 8, the lower face 7 of the support 1 and the sides of the support 1 connecting the upper face 5 and the lower face 7.
En particulier, lorsque les moyens de connexion 20 s'étendent depuis la face supérieure 5 par exemple vers le haut de l'axe vertical OZ, selon le repère de la figure 16, toute la face inférieure 7 est utilisée pour la dissipation thermique, améliorant ainsi la dissipation thermique. La surface couverte par chaque face supérieure 5 et inférieure 7 du dissipateur thermique 17 est par exemple supérieure à 100mm2, ce qui résulte en une surface d'échange thermique supérieure à 200mm2. In particular, when the connection means 20 extend from the upper face 5, for example upwards of the vertical axis OZ, according to the reference of FIG. 16, the entire lower face 7 is used for the heat dissipation, improving thus the heat dissipation. The area covered by each upper face 5 and lower 7 of the heat sink 17 is for example greater than 100mm 2 , which results in a heat exchange surface greater than 200mm 2 .
La taille de la surface d'échange thermique peut être adaptée en fonction de la puissance de la LED 3. Pour des LED 3 de puissance, elle peut couvrir plusieurs dizaines de centimètres carrés.  The size of the heat exchange surface can be adapted according to the power of the LED 3. For 3 LED power, it can cover several tens of square centimeters.
Cette dimension étendue permet de transférer efficacement la chaleur contenue dans le support 1 vers le milieu dissipateur 37.  This extended dimension makes it possible to efficiently transfer the heat contained in the support 1 to the dissipating medium 37.
Selon une variante, les faces supérieure 5 et inférieure 7 présentent des reliefs, par exemple sous forme de saillies. Ces saillies sont par exemple ciselées dans le dissipateur thermique 17. Les saillies permettent d'améliorer la circulation de l'air autour du dissipateur thermique 17 et donc d'améliorer le transfert thermique entre le dissipateur thermique 17 et le milieu dissipateur 37.  According to a variant, the upper 5 and lower 7 faces have reliefs, for example in the form of projections. These protrusions are for example chiseled in the heat sink 17. The projections can improve the flow of air around the heat sink 17 and thus improve the heat transfer between the heat sink 17 and the dissipating medium 37.
Comme représenté par la figure 9, ces saillies peuvent par exemple être situées à proximité de la zone de connexion 8. Dans ce cas ces saillies servent aussi de moyens de positionnement 22a, 22b de la LED 3, comme cela sera décrit dans la suite de la présente.  As represented by FIG. 9, these projections may for example be located near the connection zone 8. In this case these projections also serve as positioning means 22a, 22b of the LED 3, as will be described in the following. the current.
Selon une variante (non représentée), les saillies peuvent aussi être situées sur les bords longitudinaux selon l'axe longitudinal OX, du dissipateur thermique 17.  According to a variant (not shown), the projections may also be situated on the longitudinal edges along the longitudinal axis OX, of the heat sink 17.
Selon un premier mode de réalisation représenté par les figures 6 à 9, les faces supérieure 5 et inférieure 7 du dissipateur thermique 17 sont toutes les deux en contact avec un unique milieu dissipateur 37. L'unique milieu dissipateur 37 est par exemple l'air ambiant.  According to a first embodiment represented by FIGS. 6 to 9, the upper 5 and lower 7 faces of the heat sink 17 are both in contact with a single dissipating medium 37. The sole dissipating medium 37 is, for example, air ambient.
Ce mode de réalisation comprenant une LED 3 assemblée à un support 1 thermiquement conducteur, présentant un dissipateur thermique 17 de surface étendue au contact d'un unique milieu dissipateur 37 permet donc d'effectuer une dissipation efficace de la chaleur générée par la LED 3 en fonctionnement,  This embodiment comprising an LED 3 assembled to a thermally conductive support 1, having a surface heat sink 17 extended in contact with a single dissipating medium 37 thus makes it possible to effectively dissipate the heat generated by the LED 3 in FIG. operation,
c. Tenue mécanique  vs. Mechanical strength
On se réfère à la figure 9 représentant le support 1 connecté à la nappe souple 211. Avantageusement, le support 1 peut présenter au moins un premier moyen de positionnement 22a de la LED 3 située sur le dissipateur thermique 17. Ce premier moyen de positionnement 22a comprend par exemple des saillies ciselées dans le dissipateur thermique 17 et dirigées vers le haut selon l'axe vertical 02 et vers la zone de connexion 8 selon l'axe transversal OY. Dans cet exemple, le premier moyen de positionnement 22a est porté sur les deux parties 9, 11 du support 1 et positionne la LED 3 selon l'axe transversal OY. Referring to Figure 9 showing the support 1 connected to the flexible web 211. Advantageously, the support 1 may have at least one first positioning means 22a of the LED 3 located on the heat sink 17. This first positioning means 22a comprises, for example, protrusions chiseled in the heat sink 17 and directed upwards according to the invention. vertical axis 02 and to the connection zone 8 along the transverse axis OY. In this example, the first positioning means 22a is carried on the two parts 9, 11 of the support 1 and positions the LED 3 along the transverse axis OY.
Avantageusement, le support 1 peut présenter un deuxième moyen de positionnement 22b de la LED 3 situé au bord de la zone de connexion 8. Ce deuxième moyen de positionnement 22b comprend par exemple des saillies repliées vers le haut selon l'axe vertical 02 par exemple de façon à être sensiblement perpendiculaire à la face supérieure 5. Dans cet exemple, le deuxième moyen de positionnement 22b est porté par les deux parties 9, 11 et positionne la LED 3 selon l'axe longitudinal OX.  Advantageously, the support 1 may have a second positioning means 22b of the LED 3 situated at the edge of the connection zone 8. This second positioning means 22b comprises, for example, projections bent upwards along the vertical axis 02, for example so as to be substantially perpendicular to the upper face 5. In this example, the second positioning means 22b is carried by the two parts 9, 11 and positions the LED 3 along the longitudinal axis OX.
Les premier 22a et deuxième 22b moyens de positionnement sont particulièrement utiles lors de l'assemblage de la LED 3 sur le support 1.  The first 22a and second 22b positioning means are particularly useful when assembling the LED 3 on the support 1.
En effet, cette étape d'assemblage comprend généralement une soudure par refusion. Il a été expérimentalement observé que la LED 3 pouvait se déplacer sur la surface du support 1 lors de la soudure par refusion, entraînant ainsi un mauvais positionnement de la LED 3 et par conséquent, une mauvaise connexion de la LED 3 sur le support 1.  Indeed, this assembly step generally comprises a reflow solder. It has been experimentally observed that the LED 3 could move on the surface of the support 1 during the reflow soldering, thus causing the LED 3 to be misplaced and, consequently, a bad connection of the LED 3 on the support 1.
Le mauvais positionnement de la LED 3 sur le support 1 peut causer une dégradation de ses performances. Dans certains cas, la connexion électrique entre la LED 3 et les parties 9, 11 du support 1 ne peut pas être établie, ce qui occasionne des pertes matérielles et par conséquent une baisse du rendement de production.  The bad positioning of the LED 3 on the support 1 can cause a degradation of its performances. In some cases, the electrical connection between the LED 3 and the parts 9, 11 of the support 1 can not be established, which causes material losses and therefore a decrease in production efficiency.
Les premiers 22a et deuxième 22b moyens de positionnement permettent donc de contraindre le déplacement de la LED 3 pendant l'étape d'assemblage, ce qui permet d'assurer une bonne connexion entre la LED 3 et le support 1 et ainsi de réduire des pertes matérielles de LED 3 et de support 1 et d'augmenter le rendement de production.  The first 22a and second 22b positioning means therefore make it possible to constrain the displacement of the LED 3 during the assembly step, which makes it possible to ensure a good connection between the LED 3 and the support 1 and thus to reduce losses. 3 and 1 LED material and increase the production output.
Comme dit précédemment, les moyens de positionnement 22a, 22b présentent en plus un avantage thermique. En effet, ils permettent d'accroître la circulation de l'air autour du support 1 et ainsi d'améliorer la dissipation thermique. As said above, the positioning means 22a, 22b also have a thermal advantage. Indeed, they allow to increase the circulation of the air around the support 1 and thus improve the heat dissipation.
La tenue mécanique de la LED 3 à la nappe souple 211 est réalisée grâce aux moyens de connexion électrique 20 précédemment décrits. En traversant la nappe souple 211, les moyens de connexion électrique 20 contraignent le déplacement de la LED 3 selon l'axe longitudinal OX et selon l'axe transversal OY. Si les picots 201 sont repliés contre la nappe souple 211, alors le déplacement de la LED 3 est aussi contraint selon l'axe vertical 02.  The mechanical strength of the LED 3 to the flexible sheet 211 is achieved by the electrical connection means 20 described above. By crossing the flexible sheet 211, the electrical connection means 20 constrain the displacement of the LED 3 along the longitudinal axis OX and along the transverse axis OY. If the pins 201 are folded against the flexible ply 211, then the displacement of the LED 3 is also constrained along the vertical axis 02.
Selon la variante représentée par les figures 8 et 11, les moyens de connexion 20 traversent les fils de câblage 212, permettant ainsi de réaliser la tenue mécanique du support 1 aux fils de câblage. De plus, les moyens de connexion 20 peuvent présenter des moyens de maintien 52 permettant d'améliorer la tenue mécanique. Ces moyens de maintien 52 comprennent par exemple des pattes de sertissage rabattues contre les fils de câblage 212.  According to the variant shown in Figures 8 and 11, the connection means 20 through the wiring son 212, thus making the mechanical strength of the support 1 to the wiring son. In addition, the connection means 20 may have holding means 52 for improving the mechanical strength. These holding means 52 comprise, for example crimping tabs folded against the wiring son 212.
Avantageusement, le support 1 peut être assemblé à une base de support 39 telle qu'illustrée par la figure 10.  Advantageously, the support 1 can be assembled to a support base 39 as illustrated in FIG.
La base de support 39 permet d'une part d'améliorer la tenue mécanique du support 1 en augmentant la rigidité du support 1, et en empêchant le support 1 de se déplacer selon l'axe vertical 02, et d'autre part de fixer le support 1 sur un élément extérieur.  The support base 39 makes it possible on the one hand to improve the mechanical strength of the support 1 by increasing the rigidity of the support 1, and by preventing the support 1 from moving along the vertical axis 02, and on the other hand to fix the support 1 on an external element.
Selon ce mode de réalisation, cette base de support 39 est réalisée en matériau thermiquement isolant, par exemple en plastique.  According to this embodiment, this support base 39 is made of thermally insulating material, for example plastic.
Selon une variante de la base de support 39, la base de support 39 présente une forme générale sensiblement parallélépipédique présentant un logement 41 étendu selon l'axe longitudinal OX de façon à pouvoir être traversé par la nappe souple 211, et situé dans la partie supérieure de la base de support 39 suivant l'axe vertical 02.  According to a variant of the support base 39, the support base 39 has a substantially parallelepipedal general shape having a housing 41 extended along the longitudinal axis OX so as to be traversed by the flexible sheet 211, and located in the upper part of the support base 39 along the vertical axis 02.
Avantageusement, le logement 41 de la base de support 39 comprend une pluralité de rainures internes 43 étendues selon l'axe longitudinal OX. Ces rainures internes 43 présentent une forme sensiblement complémentaire à la forme de la nappe souple 211. Ces rainures internes 43 servent de guides pendant l'assemblage du support 1 avec la nappe souple 211. Ainsi on assure que les moyens de connexion 20 sont connectés aux pistes conductrices 10 désirées. On assure aussi que le support 1 et la nappe souple 211 sont mécaniquement connectés de la manière désirée. Advantageously, the housing 41 of the support base 39 comprises a plurality of internal grooves 43 extended along the longitudinal axis OX. These internal grooves 43 have a shape substantially complementary to the shape of the flexible sheet 211. These internal grooves 43 serve as guides during the assembly of the support 1 with the flexible sheet 211. Thus it is ensured that the connection means 20 are connected to the desired conductive tracks. It is also ensured that the support 1 and the flexible sheet 211 are mechanically connected in the desired manner.
La base de support 39 protège les picots 201 traversant la nappe souple 11 en leur évitant d'être soumis aux contraintes environnementales extérieures.  The support base 39 protects the pins 201 traversing the flexible ply 11 by avoiding them to be subjected to external environmental constraints.
Dans le cas où les picots 201 des moyens de connexion 20 ne sont pas repliés contre la nappe souple 211, la base de support 39 présente une pluralité de fentes internes 45 étendues selon l'axe transversal OY. Ces fentes internes 45 présentent une forme sensiblement complémentaire à celle des moyens de connexion 20 afin de pouvoir les accueillir. La base de support 39 présente autant de fentes internes 45 que de moyens de connexion 20. Selon l'exemple illustré, le support 1 présente quatre moyens de connexion 20, et donc la base de support 39 présente quatre fentes internes 45.  In the case where the pins 201 of the connection means 20 are not folded against the flexible sheet 211, the support base 39 has a plurality of internal slots 45 extended along the transverse axis OY. These internal slots 45 have a shape substantially complementary to that of the connection means 20 in order to accommodate them. The support base 39 has as many internal slots 45 as connection means 20. According to the example illustrated, the support 1 has four connection means 20, and thus the support base 39 has four internal slots 45.
La base de support 39 peut en outre présenter des moyens de fixation 47 permettant de fixer le support 1 à un objet extérieur (non représenté). Par exemple les moyens de fixation 47 comprennent des rainures externes s' étendant longitudinalement sur les faces latérales de la base de support 39, comme illustré par les figures 6, 9, 10 et 12.  The support base 39 may further have attachment means 47 for attaching the support 1 to an external object (not shown). For example, the fastening means 47 comprise external grooves extending longitudinally on the lateral faces of the support base 39, as illustrated by FIGS. 6, 9, 10 and 12.
Ces rainures externes permettent par exemple de fixer la bande de LED 23 à un rail présentant des nervures complémentaires (non représenté). Le rail peut lui-même être fixé par exemple sur un plafond ou un élément de charpente.  These external grooves allow for example to fix the LED strip 23 to a rail having complementary ribs (not shown). The rail can itself be fixed for example on a ceiling or a frame member.
Selon une variante de la base de support 39 représentée par les figures 8 et 11, la base de support 39 présente une forme sensiblement plane.  According to a variant of the support base 39 shown in FIGS. 8 and 11, the support base 39 has a substantially flat shape.
La base de support 39 présente en plus une nervure centrale 49 s' étendant sur la largeur d'une face supérieure et sur laquelle est posé le support 1. Cette nervure centrale 49 forme une entretoise entre la face inférieure 7 du support 1 et la face supérieure de base de support 39, et permet ainsi de s'assurer que la face inférieure 7 du support 1 est en contact avec l'unique milieu dissipateur 37.  The support base 39 also has a central rib 49 extending over the width of an upper face and on which the support 1 is placed. This central rib 49 forms a spacer between the lower face 7 of the support 1 and the face. upper support base 39, and thus ensures that the lower face 7 of the support 1 is in contact with the sole dissipating medium 37.
Avantageusement, la base de support 39 peut présenter une pluralité d'ouvertures traversantes 51 le traversant de sa face supérieure à sa face inférieure, telles que représentées par la figure 11. Ces ouvertures traversantes 51 permettent une meilleure circulation de l'air autour du support 1 et ainsi d'accroître l'efficacité de la dissipation thermique. Sur cette figure on peut voir une variante des moyens de fixation 47. Selon cette variante, les moyens de fixation 47 comprennent une tige par exemple cylindrique s'étendant depuis la face inférieure de la base de support 39. Cette tige est reçue par un moyen de fixation complémentaire (non représenté), par exemple un logement dans un objet extérieur. Advantageously, the support base 39 may have a plurality of through openings 51 passing through its upper face to its lower face, as shown in Figure 11. These through openings 51 allow better air circulation around the support 1 and thus increase the efficiency of the thermal dissipation. In this figure we can see a variant of the fastening means 47. According to this variant, the fastening means 47 comprise a cylindrical rod for example extending from the underside of the support base 39. This rod is received by a means complementary fixation (not shown), for example a housing in an external object.
Cette variante de la base de support 39 est particulièrement adaptée pour réaliser des phares de voitures à base d'une bande flexible lumineuse de LED 3.  This variant of the support base 39 is particularly suitable for producing car headlights based on a flexible LED light strip 3.
On se réfère maintenant à la figure 6. La base de support 39 présente en outre des moyens d'assemblage 53 avec le support 1 qui lui-même présente des moyens d'assemblage complémentaires 55.  Referring now to FIG. 6, the support base 39 also has assembly means 53 with the support 1, which itself has complementary assembly means 55.
Avantageusement, les ouvertures 19 situées sur le dissipateur thermique 17 comprennent les moyens d'assemblage complémentaires 55. Dans ce cas, les moyens d'assemblage 53 comprennent une pluralité de tiges situées sur la partie supérieure de la base de support 39.  Advantageously, the openings 19 located on the heat sink 17 comprise the complementary assembly means 55. In this case, the assembly means 53 comprise a plurality of rods located on the upper part of the support base 39.
Les tiges et les ouvertures 19 présentent une section de forme sensiblement similaire. Dans les exemples illustrés de la figure 6 à la figure 11, on peut voir quatre tiges cylindriques et quatre ouvertures 19 circulaires.  The rods and the openings 19 have a section of substantially similar shape. In the illustrated examples of FIG. 6 in FIG. 11, four cylindrical rods and four circular openings 19 can be seen.
Avantageusement, les extrémités inférieures 57 des moyens d'assemblage 53 selon l'axe vertical 02 présentent un palier de section supérieure au reste du moyen d'assemblage 53. Ainsi la face inférieure 7 du support 1 repose sur les extrémités inférieures 57. Ces extrémités inférieures 57 permettent de réduire la surface sur laquelle le support 1 et la base de support 39 sont en contact, et permettent ainsi d'augmenter la surface de contact entre le dissipateur thermique 17 et le milieu dissipateur 37. La dissipation thermique est par conséquent améliorée.  Advantageously, the lower ends 57 of the assembly means 53 along the vertical axis O 2 have a bearing of greater cross section than the rest of the assembly means 53. Thus, the lower face 7 of the support 1 rests on the lower ends 57. lower 57 reduce the surface on which the support 1 and the support base 39 are in contact, and thus increase the contact area between the heat sink 17 and the dissipating medium 37. The heat dissipation is therefore improved .
Afin de solidariser le support 1 avec la base de support 39, on peut par exemple fondre l'extrémité des tiges traversant les ouvertures 19. De cette façon, le diamètre des extrémités tiges devient supérieur au diamètre des ouvertures 19, et la base de support 39 est ainsi assemblée avec le support 1.  In order to secure the support 1 with the support base 39, it is possible for example to melt the end of the rods passing through the openings 19. In this way, the diameter of the rod ends becomes greater than the diameter of the openings 19, and the support base 39 is thus assembled with the support 1.
Le support 1 ainsi assemblé à la base de support 39 présente une bonne résistance mécanique contre les sollicitations extérieures. Selon une variante représentée par la figure 12, les moyens d'assemblage 53 comprennent des cliquets présentant chacun deux branches, les extrémités des branches étant plus larges que le reste des branches. Ainsi les cliquets peuvent être insérés par les ouvertures 19, mais ne peuvent pas en être retirés accidentellement. The support 1 thus assembled to the support base 39 has a good mechanical resistance against external stresses. According to a variant shown in Figure 12, the assembly means 53 comprise pawls each having two branches, the ends of the branches being wider than the rest of the branches. Thus the pawls can be inserted through the openings 19, but can not be removed accidentally.
Selon encore une autre variante, les moyens d'assemblage 53 comprennent au moins une rainure permettant le clipsage du support 1 sur la base de support 39 et permettant de maintenir le support assemblé sur la base de support 1.  According to yet another variant, the assembly means 53 comprise at least one groove for clipping the support 1 on the support base 39 and for holding the assembled support on the support base 1.
Selon une autre variante, le support 1 n'est pas associé à une base de support 39. 2. Deuxième mode de réalisation  According to another variant, the support 1 is not associated with a support base 39. 2. Second embodiment
Le deuxième mode de réalisation illustré par les figures 13 et 14 diffère du premier mode en ce que la face supérieure 5 du dissipateur thermique 17 est en contact thermique avec un premier milieu dissipateur 371, et la face inférieure du dissipateur thermique 17 est en contact thermique avec un deuxième milieu dissipateur 372 différent du premier milieu dissipateur 371.  The second embodiment illustrated by FIGS. 13 and 14 differs from the first embodiment in that the upper face 5 of the heat sink 17 is in thermal contact with a first dissipating medium 371, and the lower face of the heat sink 17 is in thermal contact. with a second dissipating medium 372 different from the first dissipating medium 371.
a. Dissipation thermique  at. Thermal dissipation
Le support 1 est tel que décrit dans le premier mode de réalisation.  The support 1 is as described in the first embodiment.
Selon le deuxième mode de réalisation représenté par la figure 13, la face supérieure 5 du support 1 est en contact avec le premier milieu dissipateur 371. Le premier milieu dissipateur 371 est par exemple l'air ambiant.  According to the second embodiment shown in FIG. 13, the upper face 5 of the support 1 is in contact with the first dissipating medium 371. The first dissipating medium 371 is, for example, ambient air.
Et, la face inférieure du dissipateur thermique 17 est en contact avec le deuxième milieu dissipateur 372 différent du premier milieu dissipateur 371. Le deuxième milieu dissipateur 372 est un milieu thermiquement conducteur de conductivité thermique plus élevée que celle du premier milieu dissipateur. Par exemple, le deuxième milieu dissipateur est un milieu de silicone thermiquement conducteur. De cette façon, la dissipation thermique est considérablement améliorée.  And, the lower face of the heat sink 17 is in contact with the second dissipating medium 372 different from the first dissipating medium 371. The second dissipating medium 372 is a thermally conductive medium of higher thermal conductivity than that of the first dissipating medium. For example, the second dissipating medium is a thermally conductive silicone medium. In this way, the heat dissipation is considerably improved.
En variante, le support peut comporter une interface isolée électriquement et conductrice thermiquement apte à connecter le support à un deuxième milieu dissipateur. A cet effet, on peut prévoir un élément adhésif électriquement isolé mais conducteur thermique apte à connecter le support 1 à un deuxième milieu dissipateur thermique, en particulier un matériau dissipateur métallique tel que de l'aluminium. b. Connexion électrique In a variant, the support may comprise an electrically insulated and thermally conductive interface capable of connecting the support to a second dissipating medium. For this purpose, it is possible to provide an electrically isolated but thermally conductive adhesive element capable of connecting the support 1 to a second heat sink medium, in particular a metal dissipative material such as aluminum. b. Electrical connection
La connexion électrique est établie par le support 1 selon les variantes décrites dans le premier mode de réalisation.  The electrical connection is established by the support 1 according to the variants described in the first embodiment.
c. Tenue mécanique  vs. Mechanical strength
Le support 1 peut présenter des moyens de positionnement 22a, 22b de la LED 3 tels que décrits dans le premier mode de réalisation.  The support 1 may have positioning means 22a, 22b of the LED 3 as described in the first embodiment.
Selon le mode de réalisation représenté par la figure 13, le support 1 est assemblé à une variante de base de support 39, par exemple réalisée dans un matériau thermiquement conducteur. Par exemple une silicone présentant une haute conductivité thermique.  According to the embodiment shown in FIG. 13, the support 1 is assembled to a variant of the support base 39, for example made of a thermally conductive material. For example a silicone having a high thermal conductivity.
Dans ce cas, la base de support 39 comprend un profilé, par exemple en silicone thermiquement conducteur, capable d'accueillir une pluralité de supports 1.  In this case, the support base 39 comprises a profile, for example made of thermally conductive silicone, capable of receiving a plurality of supports 1.
De plus, la silicone présente une grande souplesse, ce qui permet d'assurer le passage d'angles.  In addition, the silicone has a great flexibility, which ensures the passage of angles.
Le profilé est par exemple obtenu par extrusion.  The profile is for example obtained by extrusion.
La face supérieure de la base de support 39 présente un logement 59 sensiblement centré vers le milieu de la base de support 39 selon l'axe transversal OY. Ce logement 59 comprend un premier palier 591 et un deuxième palier 592. Le premier palier 591 se situe en contrebas du deuxième palier 592 suivant l'axe vertical 02.  The upper face of the support base 39 has a housing 59 substantially centered towards the middle of the support base 39 along the transverse axis OY. This housing 59 comprises a first bearing 591 and a second bearing 592. The first bearing 591 is located below the second bearing 592 along the vertical axis 02.
La largeur et la hauteur du premier palier 591 permettent d'accueillir la nappe souple 211.  The width and height of the first bearing 591 can accommodate the flexible sheet 211.
Avantageusement, la nappe souple 211 peut être surmoulée dans le profilé lors de extrusion.  Advantageously, the flexible sheet 211 may be overmolded in the profile during extrusion.
La largeur et la hauteur du deuxième palier 592 permettent d'accueillir le support 1. Ainsi la face inférieure 7 du dissipateur thermique 17 repose sur le deuxième palier 592 de la base de support 39. La base de support 39 comprend donc le deuxième milieu dissipateur 372.  The width and height of the second bearing 592 can accommodate the support 1. Thus the lower face 7 of the heat sink 17 rests on the second bearing 592 of the support base 39. The support base 39 therefore comprises the second dissipating medium 372.
Une pluralité de supports 1 peut être connectée à la nappe souple 211 afin de former une bande lumineuse de LED 231.  A plurality of supports 1 may be connected to the flexible web 211 to form an LED light strip 231.
Les moyens de connexion 20 tels que décrits précédemment permettent d' assembler le support 1 à la nappe souple 211. Avantageusement, les picots 201 (non représentés sur cette figure) traversent la nappe souple 211 puis percent la base de support 39. En effet, la silicone étant moins rigide que le plastique, il n'est pas nécessaire de réaliser des fentes au préalable pour accueillir les picots 201. The connection means 20 as described above allow to assemble the support 1 to the flexible sheet 211. Advantageously, the pins 201 (not shown in this figure) pass through the flexible sheet 211 and then pierce the support base 39. Indeed, the silicone being less rigid than the plastic, it it is not necessary to make slots beforehand to accommodate the pins 201.
Les moyens de connexion 20 contraignent le mouvement du support 1 selon l'axe longitudinal OXet l'axe transversal OY.  The connection means 20 constrain the movement of the support 1 along the longitudinal axis OX and the transverse axis OY.
Une variante de moyens d'assemblage 53 est prévue afin de contraindre le mouvement du support 1, en particulier le mouvement vertical du support 1, c'est-à-dire selon l'axe vertical 02. Les moyens d'assemblage 53 comprennent par exemple une rainure longitudinale extrudée sur la face interne des parois latérales 61 de la base de support 39. La hauteur selon l'axe vertical 02 des rainures longitudinales est sensiblement égale à l'épaisseur du support 1. De telles rainures sont visibles sur les figures 13, 14 et 16.  An alternative assembly means 53 is provided to constrain the movement of the support 1, in particular the vertical movement of the support 1, that is to say along the vertical axis 02. The assembly means 53 comprise by a longitudinal groove extruded on the inner face of the side walls 61 of the support base 39. The height along the vertical axis 02 of the longitudinal grooves is substantially equal to the thickness of the support 1. Such grooves are visible in the figures 13, 14 and 16.
Les rainures longitudinales peuvent également recevoir un film (non représenté) permettant de rendre la bande lumineuse de LED 231 étanche.  The longitudinal grooves may also receive a film (not shown) to make the LED light strip 231 waterproof.
Ce film, en contact avec la face supérieure 5 du support peut de plus servir de premier milieu dissipateur 371.  This film, in contact with the upper face 5 of the support can also serve as the first dissipating medium 371.
Ce film peut en outre être choisi selon des propriétés de diffusion de la lumière. Ainsi, la bande lumineuse de LED 231 ne présente pas une pluralité de sources ponctuelles, mais apparaît comme une bande de lumière continue.  This film may also be chosen according to light diffusion properties. Thus, the LED light band 231 does not have a plurality of point sources, but appears as a continuous light band.
Selon une variante, afin de faciliter l'assemblage du support 1 avec la base de support 39, la face supérieure 63 des parois latérales 61 peut présenter une pente inclinée vers l'intérieur de la base de support 39.  According to a variant, to facilitate the assembly of the support 1 with the support base 39, the upper face 63 of the side walls 61 may have an inclined slope towards the inside of the support base 39.
La base de support 39 peut également présenter des moyens de fixation 47 permettant de la fixer à un élément extérieur 65 comme représenté par la figure 15. L'élément extérieur 65 peut être une plaque de bois ou un rail de fixation.  The support base 39 may also have attachment means 47 for attaching to an outer member 65 as shown in Figure 15. The outer member 65 may be a wood plate or a fixing rail.
Les moyens de fixation 47 comprennent par exemple une nervure s'étendant selon la longueur de la base de support 39. L'élément extérieur 65 peut comprendre des moyens de fixation complémentaires 67. Dans le cas de l'exemple, l'élément extérieur 65 comprend une rainure de forme complémentaire à la nervure de fixation de la base de support 39. Dans l'exemple, la rainure est rectiligne. On peut aussi réaliser des moyens de fixation complémentaires 67 décrivant un cercle ou toute autre forme. The fixing means 47 comprise, for example, a rib extending along the length of the support base 39. The outer element 65 may comprise complementary fixing means 67. In the case of the example, the outer element 65 comprises a groove of complementary shape to the fixing rib of the base In the example, the groove is rectilinear. Complementary fastening means 67 can also be made to describe a circle or any other shape.
Ces moyens de fixation 47 sont faciles à réaliser et permettent de simplifier l'assemblage de la bande de composants électronique 17 avec un élément extérieur 65 tel qu'un plafond ou une charpente.  These fixing means 47 are easy to make and simplify the assembly of the electronic component strip 17 with an outer element 65 such as a ceiling or a frame.
Selon une variante (non représentée), le profilé de silicone peut être découpé afin de former une pluralité de bases de support 39 individuelles.  According to a variant (not shown), the silicone profile can be cut to form a plurality of individual support bases 39.
Selon une autre variante (non représentée), des zones de silicone peuvent être réalisées sur une base de support 39 en matériau isolant afin d'améliorer la dissipation thermique.  According to another variant (not shown), silicone zones can be made on a support base 39 of insulating material in order to improve the heat dissipation.
3. Troisième mode de réalisation  3. Third embodiment
Le troisième mode de réalisation illustré sur la figure 16 diffère du deuxième mode de réalisation en ce que les moyens de connexion 20 s'étendent depuis la face supérieure 5 du dissipateur thermique 17 en contact avec un premier milieu dissipateur 371, vers le premier milieu dissipateur 371, ici l'air, et non plus vers le deuxième milieu dissipateur 372, tel qu'un milieu de silicone thermiquement conducteur.  The third embodiment illustrated in FIG. 16 differs from the second embodiment in that the connection means 20 extend from the upper face 5 of the heat sink 17 in contact with a first dissipating medium 371 towards the first dissipating medium. 371, here the air, and no longer to the second dissipating medium 372, such as a thermally conductive silicone medium.
Ainsi, dans l'exemple de la figure 16 les moyens de connexion 20, en particulier les picots 201, sont orientés vers le haut selon l'axe 02 du repère représenté.  Thus, in the example of FIG. 16, the connection means 20, in particular the pins 201, are oriented upwards along the axis 02 of the mark represented.
De cette façon, la dissipation thermique est considérablement améliorée. En effet, toute la face inférieure 7 est utilisée pour la dissipation thermique en étant en contact avec un deuxième milieu dissipateur 372, différent du premier milieu dissipateur 371.  In this way, the heat dissipation is considerably improved. Indeed, the entire lower face 7 is used for heat dissipation by being in contact with a second dissipating medium 372, different from the first dissipating medium 371.
Le deuxième milieu dissipateur 372 est par exemple de conductivité thermique supérieure à celle du premier milieu dissipateur thermique 371.  The second dissipating medium 372 is for example of higher thermal conductivity than that of the first heat sink medium 371.
Par ailleurs, selon ce mode de réalisation, les moyens de connexion 20 ne sont pas situés au niveau de la zone de connexion 8 du support 1 avec la LED 3 comme dans l'exemple de la figure 1 mais au niveau du prolongement latéral de cette zone de connexion 8 formant le dissipateur thermique 17.  Furthermore, according to this embodiment, the connection means 20 are not located at the connection area 8 of the support 1 with the LED 3 as in the example of Figure 1 but at the lateral extension of this connection area 8 forming the heat sink 17.
En variante, on peut prévoir, une interface telle qu'un élément adhésif électriquement isolé mais conducteur thermique apte à connecter le support 1 à un deuxième milieu dissipateur thermique, en particulier un milieu dissipateur métallique tel que de l'aluminium. In a variant, it is possible to provide an interface such as an electrically isolated but thermally conductive adhesive element able to connect the support 1 to a second heat sink medium, in particular a metal dissipative medium such as aluminum.
4. Quatrième mode de réalisation  4. Fourth embodiment
Le quatrième mode de réalisation illustré sur les figures 17a à 19 diffère du troisième mode de réalisation en ce que le support 1 comprend en outre un guide 400 pour les moyens de connexion 20 comprenant par exemple les picots 201.  The fourth embodiment illustrated in FIGS. 17a to 19 differs from the third embodiment in that the support 1 further comprises a guide 400 for the connection means 20 comprising, for example, the pins 201.
Le guide 400 est avantageusement réalisé sous la forme d'un boîtier de guidage en un matériau isolant tel que du plastique.  The guide 400 is advantageously made in the form of a guide housing made of an insulating material such as plastic.
Le guide 400 sous forme de boîtier peut être inséré autour de la nappe souple 21 et être fixé au support 1 par exemple à l'aide des picots 201.  The guide 400 in the form of a housing can be inserted around the flexible ply 21 and be fixed to the support 1 for example by means of the spikes 201.
Ce guide 400 permet notamment de guider et maintenir en position le moyen de connexion 20, ici les deux picots 201, lors de la connexion sur le moyen de câblage souple 21 (cf figure 18) pour éviter que les picots 201 ne s'écartent et ainsi garantir que les pistes conductrices 10 soient correctement dénudées.  This guide 400 makes it possible in particular to guide and hold in position the connection means 20, here the two pins 201, when connected to the flexible wiring means 21 (see FIG. 18) to prevent the pins 201 from diverging and thus ensure that the conductive tracks 10 are properly stripped.
Les picots 201 peuvent en outre être repliés sur le guide 400 pour améliorer la tenue mécanique, comme cela est visible sur les figures 17b et 19.  The pins 201 may also be folded over the guide 400 to improve the mechanical strength, as can be seen in Figures 17b and 19.
Par ailleurs, de façon similaire au mode de réalisation illustré sur la figure 14, le support 1 est assemblé à une base de support 39 (cf figures 18-19) réalisée par exemple dans un matériau thermiquement conducteur, telle qu'une silicone ou présentant au moins un deuxième milieu thermiquement conducteur, présentant une haute conductivité thermique, supérieure à la conductivité thermique du premier milieu 371 tel que l'air ambiant.  Moreover, in a similar manner to the embodiment illustrated in FIG. 14, the support 1 is assembled to a support base 39 (cf. FIGS. 18-19) made for example in a thermally conductive material, such as a silicone or having at least one second thermally conductive medium, having a high thermal conductivity, greater than the thermal conductivity of the first medium 371 such as ambient air.
A titre d'exemple, la base de support 39 peut comprendre un profilé en silicone thermiquement conducteur capable d'accueillir une pluralité de supports 1 tel que décrit précédemment en référence à la figure 14, comprenant le deuxième milieu dissipateur 372.  By way of example, the support base 39 may comprise a thermally conductive silicone profile capable of accommodating a plurality of supports 1 as described above with reference to FIG. 14, comprising the second dissipating medium 372.
On comprend donc qu'un tel support de connexion 1 comprenant un dissipateur thermique 17 permet de dissiper la chaleur générée par la LED 3 de façon simple et efficace. Le support 1 permet de plus une connexion électrique simplifiée entre la LED 3 et une ou des pistes conductrices 10, tout en assurant une bonne tenue mécanique. De plus, le support 1 peut facilement être assemblé à une base de support 39 permettant d'une part d'augmenter sa résistance mécanique et d'autre part d'être fixé à un élément extérieur. La base de support 39 peut en outre améliorer la dissipation thermique du support 1 notamment en présentant un deuxième milieu thermiquement conducteur 372 de conductivité thermique supérieure à celle d'un premier milieu 371 de conductivité thermique tel que l'air, et avec lequel une des faces 7 du dissipateur thermique 17 est en contact. It is therefore understood that such a connection support 1 comprising a heat sink 17 allows to dissipate the heat generated by the LED 3 in a simple and effective manner. The support 1 also allows a simplified electrical connection between the LED 3 and one or more conductive tracks 10, while ensuring good mechanical strength. In addition, the support 1 can easily be assembled to a support base 39 on the one hand to increase its mechanical strength and on the other hand to be attached to an external element. The support base 39 can furthermore improve the heat dissipation of the support 1, in particular by having a second thermally conductive medium 372 of thermal conductivity greater than that of a first medium 371 of thermal conductivity such as air, and with which one of the 7 faces of the heat sink 17 is in contact.
Un tel support 1 offre une grande souplesse dans le choix de l'implantation des LED 3 sur les moyens de câblages 21, 211, 212.  Such a support 1 offers great flexibility in the choice of the implementation of the LEDs 3 on the wiring means 21, 211, 212.
Plus particulièrement, le support 1 connecté aux pistes conductrices 10 d'une nappe souple 211 ou d'un fil de câblage permet d'obtenir un ensemble, tel qu'une bande flexible lumineuse 23, 231 plus flexible qu'avec une réalisation sur circuit imprimé.  More particularly, the support 1 connected to the conductive tracks 10 of a flexible sheet 211 or a wiring wire makes it possible to obtain an assembly, such as a flexible flexible strip 23, 231 which is more flexible than with an embodiment on a circuit. printed.
Enfin, ce support 1 est simple à fabriquer et à assembler.  Finally, this support 1 is simple to manufacture and assemble.

Claims

REVENDICATIONS
1. Support de connexion (1) pour diode électroluminescente (3) comprenant : - une zone de connexion électrique (8) destinée à recevoir ladite diode électroluminescente (3), 1. Connection support (1) for light-emitting diode (3) comprising: - an electrical connection zone (8) intended to receive said light-emitting diode (3),
- deux parties (9, 11) métalliques voisines isolées électriquement l'une de l'autre et comprenant chacune une partie de la zone de connexion (8) destinée à être en contact avec un contact électrique correspondant de la diode électroluminescente (3), chaque partie (9, 11) présentant d'une part un moyen de connexion (20) transperçant destiné à transpercer un conducteur électrique (10) isolé pour assurer l'alimentation électrique de la diode électroluminescente (3), et d'autre part un prolongement latéral formant un dissipateur thermique (17), ledit dissipateur thermique (17) comprenant une face supérieure (5) et une face inférieure (7) caractérisé en ce que ladite face supérieure (5) est destinée à être en contact thermique avec un premier milieu dissipateur (371) et ladite face inférieure (7) est destinée à être en contact thermique avec un deuxième milieu dissipateur (372) différent du premier milieu dissipateur (371) et de conductivité thermique plus élevée. two adjacent metal parts (9, 11) electrically insulated from one another and each comprising a portion of the connection zone (8) intended to be in contact with a corresponding electrical contact of the light-emitting diode (3), each portion (9, 11) having on the one hand a piercing connection means (20) for piercing an insulated electrical conductor (10) to provide power to the light-emitting diode (3), and on the other hand a lateral extension forming a heat sink (17), said heat sink (17) comprising an upper face (5) and a lower face (7) characterized in that said upper face (5) is intended to be in thermal contact with a first dissipating medium (371) and said lower face (7) is intended to be in thermal contact with a second dissipating medium (372) different from the first dissipating medium (371) and having a higher thermal conductivity lifted.
2. Support (1) selon la revendication 1, dans lequel le moyen de connexion (20) est agencé au niveau de la zone de connexion (8) et s'étend depuis la face (7) opposée à la face (5) dudit support (1) destinée à recevoir la diode électroluminescente (3). 2. Support (1) according to claim 1, wherein the connection means (20) is arranged at the connection area (8) and extends from the face (7) opposite the face (5) of said support (1) for receiving the light-emitting diode (3).
3. Support selon la revendication 1, dans lequel le moyen de connexion (20) est agencé dans le prolongement latéral de la zone de connexion (8) et s'étend depuis la face (5) dudit support (1) destinée à recevoir la diode électroluminescente (3). 4. Support (1) selon l'une des revendications 1 à 3, caractérisé en ce que ledit au moins un moyen de connexion (20) est réalisé selon la technologie IDC pour « Insulation- displacement connector » en anglais, et en ce que ledit au moins un moyen de connexion (20) dudit support (1) est configuré pour transpercer un moyen de câblage souple (21) en dénudant ledit moyen de câblage souple (21) de façon à être en contact avec un conducteur électrique (10) dudit moyen de câblage souple (21). 3. Support according to claim 1, wherein the connection means (20) is arranged in the lateral extension of the connection zone (8) and extends from the face (5) of said support (1) intended to receive the light-emitting diode (3). 4. Support (1) according to one of claims 1 to 3, characterized in that said at least one connection means (20) is made according to IDC technology for "Insulation- displacement connector" in English, and in that said at least one connection means (20) of said support (1) is configured to pierce a wiring means flexible (21) stripping said flexible wiring means (21) so as to contact an electrical conductor (10) of said flexible wiring means (21).
5. Support (1) selon la revendication 4, caractérisé en ce que le moyen de câblage souple (21) comprend une nappe souple (211) ou un fil de câblage (212). 6. Support (1) selon l'une des revendications précédentes, caractérisé en ce qu'il est assemblé avec une base de support (39) configurée pour améliorer la tenue mécanique dudit support (1). 5. Support (1) according to claim 4, characterized in that the flexible wiring means (21) comprises a flexible web (211) or a wiring wire (212). 6. Support (1) according to one of the preceding claims, characterized in that it is assembled with a support base (39) configured to improve the mechanical strength of said support (1).
7. Support (1) selon les revendications 5 et 6 prises ensemble, caractérisé en ce que la base de support (39) est configurée pour être traversée par ladite nappe souple (211) 8. Support (1) selon la revendication 6 ou 7, caractérisé en ce que la base de support (39) comprend au moins un moyen d'assemblage (53) configuré pour maintenir la base de support (39) avec le support (1) et comprenant au moins une rainure apte à contraindre le mouvement du support (1). 7. Support (1) according to claims 5 and 6 taken together, characterized in that the support base (39) is configured to be traversed by said flexible web (211) 8. Support (1) according to claim 6 or 7 characterized in that the support base (39) comprises at least one connecting means (53) configured to hold the support base (39) with the support (1) and comprising at least one groove capable of constraining the movement of the support (1).
9. Support (1) selon la revendication 8, caractérisé en ce que la base de support (39) présente une forme générale sensiblement parallélépipédique et le moyen d'assemblage9. Support (1) according to claim 8, characterized in that the support base (39) has a substantially parallelepipedal general shape and the assembly means
(53) comprend au moins une rainure longitudinale apte à contraindre un mouvement vertical du support (1). (53) comprises at least one longitudinal groove capable of constraining a vertical movement of the support (1).
10. Support (1) selon l'une des revendications 6 à 9, caractérisé en ce que la base de support (39) comprend des moyens de fixation (47) configurés pour maintenir la base de support (39) avec un élément extérieur (65). 10. Support (1) according to one of claims 6 to 9, characterized in that the support base (39) comprises fixing means (47) configured to maintain the support base (39) with an external element ( 65).
11. Support (1) selon l'une des revendications 6 à 10, caractérisé en ce que la base de support (39) est un matériau isolant. 11. Support (1) according to one of claims 6 to 10, characterized in that the support base (39) is an insulating material.
12. Support (1) selon la revendication 11, caractérisé en ce que la base de support (39) comprend des ouvertures traversantes (51) afin d'améliorer la dissipation thermique. 13. Support (1) selon l'une des revendications précédentes, caractérisé en ce que le deuxième milieu dissipateur (372) est un matériau thermiquement conducteur, telle qu'une silicone thermiquement conductrice. 12. Support (1) according to claim 11, characterized in that the support base (39) comprises through openings (51) to improve the heat dissipation. 13. Support (1) according to one of the preceding claims, characterized in that the second dissipating medium (372) is a thermally conductive material, such as a thermally conductive silicone.
14. Support (1) selon l'une des revendications précédentes, caractérisé en ce qu'il comporte une interface isolée électriquement et conductrice thermiquement apte à connecter le support (1) au deuxième milieu dissipateur. 14. Support (1) according to one of the preceding claims, characterized in that it comprises an electrically insulated interface and thermally conductive adapted to connect the support (1) to the second dissipating medium.
15. Support (1) selon l'une des revendications précédentes, caractérisé en ce que ladite face inférieure (7) est en contact thermique avec la base du support (39), et en ce que la base du support (39) comprend le deuxième milieu dissipateur (372). 15. Support (1) according to one of the preceding claims, characterized in that said lower face (7) is in thermal contact with the base of the support (39), and in that the base of the support (39) comprises the second dissipating medium (372).
16. Support (1) selon l'une des revendications précédentes, caractérisé en ce qu'il présente au moins un moyen de positionnement (22a, 22b) afin de contraindre le déplacement de la diode électroluminescente (3). 17. Support (1) selon l'une des revendications précédentes, caractérisé en ce que le dissipateur thermique (17) présente une surface supérieure à 200 mm2. 16. Support (1) according to one of the preceding claims, characterized in that it has at least one positioning means (22a, 22b) to constrain the displacement of the light emitting diode (3). 17. Support (1) according to one of the preceding claims, characterized in that the heat sink (17) has a surface greater than 200 mm 2 .
18. Support (1) selon l'une quelconque des revendications précédentes, comprenant un guide (400) du moyen de connexion (20) configuré pour guider et maintenir en position le moyen de connexion (20) lors de la connexion sur le moyen de câblage souple (21). 19. Support (1) selon la revendication précédente, dans lequel le guide (400) est réalisé en un matériau isolant, tel que du plastique. 18. Support (1) according to any one of the preceding claims, comprising a guide (400) of the connection means (20) configured to guide and hold in position the connection means (20) during connection to the means of flexible wiring (21). 19. Support (1) according to the preceding claim, wherein the guide (400) is made of an insulating material, such as plastic.
20. Bande flexible comportant une nappe souple (21) présentant des pistes conductrices (10), caractérisée en ce qu'elle comporte en outre au moins un support de connexion (1) portant au moins une diode électroluminescente (3), ledit au moins un support (1) étant conforme à l'une quelconque des revendications précédentes. 20. Flexible strip comprising a flexible sheet (21) having conductive tracks (10), characterized in that it further comprises at least one connection support (1) carrying at least one light-emitting diode (3), said at least one a support (1) according to any one of the preceding claims.
EP13727060.9A 2012-05-07 2013-05-07 Connection support for light-emitting diode and corresponding flexible band Withdrawn EP2850361A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1201319A FR2990263B1 (en) 2012-05-07 2012-05-07 CONNECTOR HOLDING DIODE ELECTROLUMINESCENTE
PCT/EP2013/059523 WO2013167611A1 (en) 2012-05-07 2013-05-07 Connection support for light-emitting diode and corresponding flexible band

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EP2850361A1 true EP2850361A1 (en) 2015-03-25

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WO (1) WO2013167611A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6386733B1 (en) * 1998-11-17 2002-05-14 Ichikoh Industries, Ltd. Light emitting diode mounting structure
US7210957B2 (en) * 2004-04-06 2007-05-01 Lumination Llc Flexible high-power LED lighting system
JP2006128652A (en) * 2004-09-29 2006-05-18 Furukawa Electric Co Ltd:The Fixing structure of emission parts loading flat cable
JP4345017B2 (en) * 2005-04-28 2009-10-14 住友電装株式会社 Light emitting device
US20080137377A1 (en) * 2006-12-11 2008-06-12 Gelcore, Llc Led light engine and method of manufacturing
WO2010040159A1 (en) * 2008-10-06 2010-04-15 Tridonicatco Connection Technology Gmbh & Co Kg Lamp with led
JP2010153081A (en) * 2008-12-24 2010-07-08 Yazaki Corp Illumination unit

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FR2990263A1 (en) 2013-11-08
FR2990263B1 (en) 2015-03-27

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