EP4361497A1 - Connection element for a light-emitting diode strip, light-emitting diode strip provided with a connection element, and lighting strip comprising such a light-emitting diode strip - Google Patents
Connection element for a light-emitting diode strip, light-emitting diode strip provided with a connection element, and lighting strip comprising such a light-emitting diode strip Download PDFInfo
- Publication number
- EP4361497A1 EP4361497A1 EP23202632.8A EP23202632A EP4361497A1 EP 4361497 A1 EP4361497 A1 EP 4361497A1 EP 23202632 A EP23202632 A EP 23202632A EP 4361497 A1 EP4361497 A1 EP 4361497A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- light
- strip
- emitting diode
- connection element
- diode strip
- 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.)
- Pending
Links
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Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V23/00—Arrangement of electric circuit elements in or on lighting devices
- F21V23/06—Arrangement of electric circuit elements in or on lighting devices the elements being coupling devices, e.g. connectors
-
- 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
- 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
- F21S4/28—Lighting devices or systems using a string or strip of light sources with light sources held by or within elongate supports rigid, e.g. LED bars
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V31/00—Gas-tight or water-tight arrangements
- F21V31/04—Provision of filling media
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2103/00—Elongate light sources, e.g. fluorescent tubes
- F21Y2103/10—Elongate light sources, e.g. fluorescent tubes comprising a linear array of point-like light-generating elements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/10—Light-emitting diodes [LED]
Definitions
- the present invention relates to a connection element for arrangement on and electrical connection with a light-emitting diode strip according to the preamble of claim 1.
- the present invention further relates to a light-emitting diode strip according to claim 5 or 6, which is terminated with at least one of the said connection elements.
- the invention relates to a lighting strip with a connection element and a light-emitting diode strip according to claim 7.
- the above-mentioned LED strip can be a flexible LED strip which is arranged in a lighting strip which is provided for lighting purposes in a building or on or in a vehicle, for example.
- a lighting strip is formed by mounting the LED strip in a provided profile made of metal or possibly flexible plastic, for example by gluing.
- a profile is also referred to as a base profile in the following text.
- the lighting strip formed from the mentioned parts is, after the LED strip has been introduced into The housing is often encapsulated with transparent plastic to protect the LED strip inside from environmental influences such as moisture, humidity and corrosion. This plastic is also referred to as encapsulation in the following text.
- a light-emitting diode strip is often designed as a circuit board made of flexible plastic.
- This circuit board often has two or more copper tracks or copper layers extending along the length of the light-emitting diode strip, which are provided on a flexible circuit board.
- the light-emitting diodes are mounted on the circuit board using chip-on-board (COB) technology or SMD technology, for example, and connected to the copper tracks.
- COB chip-on-board
- SMD SMD technology
- These copper tracks must be electrically contacted at the ends of the light-emitting diode strip.
- a cable with a connector is often soldered to a copper track on the circuit board at the end remote from the connector. After the soldering process and the insertion of the light-emitting diode strip into the base profile, it can then be encapsulated with transparent plastic.
- the patent specification discloses EN 10 2008 013 454 B4 a lighting strip in which a circuit board covered by a potting compound is positioned. At the end of the lighting strip there is a termination element which is drilled through to allow the electrical supply lines to pass through.
- the length of the connecting cable for the lighting strip determines the length of the connecting cable for the lighting strip.
- one and the same type of lighting strip can be used in different places.
- the manufacturer of the lighting strip the problem that he has to provide a large number of lighting strips with different cable lengths and/or connectors for the connecting cable. If the casting is done mechanically, cables and any connectors attached to them must also be transported through the casting machine. This is particularly problematic with long connecting cables.
- the lengths of the connecting cables vary between a few centimeters and around 10 meters.
- the electrical supply cables can only be connected after the casting.
- this requires reliable containment, i.e. mechanical separation of the liquid or gel-like casting compound during the application process.
- Reliable separation between the area to be cast and the area of the lighting strip intended for electrical contact is necessary because the area of the LED strip intended for electrical connection must be kept free of casting compound.
- the disclosure document EN 10 2009 020 851 A1 describes a sealing cover for protecting the electrical contacts of a molded lighting strip to enable the installation of an electrical connection to the lighting strip.
- the utility model CN 201155673 Y and the disclosure document CN101060733A show elongated cast lighting strips with connection elements at the ends, in which a light-emitting diode strip mounted therein is provided with a foil on the side facing away from the light-emitting diodes.
- connection element mentioned at the beginning is intended to provide both a mechanical containment of the potting compound above the LED strip and a reliable and at the same time flexible possibility for electrically contacting the LED strip.
- connection element which meets the above requirements.
- a light-emitting diode strip intended for use with such connection elements is also to be provided.
- a lighting strip with a light-emitting diode strip and connection elements to be created attached thereto is to be provided.
- the invention has the features of claim 1 with regard to the connection element.
- the invention has the features of claim 5 or 6.
- the invention has the features of claim 7.
- connection element for arrangement on and electrical connection with a light-emitting diode strip for accommodation in a base profile with a bottom wall and lateral side walls extending from the bottom wall and an inner recess formed by the bottom wall and the side walls, in particular an elongated inner recess for accommodation of the light-emitting diode strip
- the connection element is designed to accommodate one end of the light-emitting diode strip and has a partition wall which is effective when the light-emitting diode strip accommodated in the base profile is cast with casting compound, wherein the partition wall is penetrated by an electrical contact device, wherein the electrical contact device on the side of the partition wall facing the light-emitting diode strip is set up for electrical contacting of a contacting device arranged on the light-emitting diode strip and wherein the electrical contact device on the side of the partition wall facing away from the light-emitting diode strip is set up for connection to a plug connector, and the connection element arranged on the light-
- the LED strip has a flexible circuit board that has a very large longitudinal dimension compared to its width. On one side of this circuit board, LEDs are attached, while the other side of the board, facing away from the LEDs, is connected to the bottom wall of the base profile. The LED strip is thus located in the inner recess of the base profile. A LED strip in the sense of the invention is only electrically contacted at one or both ends.
- the base profile can be a flexible plastic profile that is designed to accommodate the LED strip attached to a bottom wall of the plastic profile.
- the plastic profile also has two side walls that extend from opposite sides of the bottom wall so far away from the bottom wall that the side walls protrude beyond a LED strip attached to the bottom wall.
- the bottom wall and the two side walls thus form an elongated, channel-shaped profile. After a LED strip has been attached to this profile, this channel-shaped profile is filled with a casting compound that is transparent at least in the area of the LEDs.
- connection element with the partition wall described above ensures that the encapsulated area is safely separated from the electrical contact of a lighting strip provided with the LED strip.
- the contact on the side facing away from the LED strip is made here via a plug connector, which can be attached to the connection element either before encapsulation or after the complete lighting strip has been manufactured.
- the contact between the plug connector and the LED strip attached inside the lighting strip is made using an electrical contact device described below, which is integrated into the connection element.
- An electrical contact device is provided on the side of the partition facing the LED strip for connection to the LED strip Contact devices such as solder pads or insulation displacement terminals are installed.
- the electrical contact device for connecting to the connector is installed on the side of the partition facing the connector. These can be metal pins, electrical wires or insulated electrical wires.
- connection element according to the invention advantageously serves to prevent the casting compound from flowing over the ends of the LED strip into areas of the lighting strip that are used for electrical contact.
- connection elements are also referred to as wedges.
- Such a connection element can be attached to both ends - viewed in the longitudinal direction - of the LED strip before the LED strip is inserted into the base profile.
- one advantage of this invention is the possibility of assembling the connection element directly during or immediately after assembling the respective circuit board in a "pick and place” process together with the other electronic components such as LEDs and control circuits.
- a further advantage is that the connecting cable does not need to be transported through the potting machine and the device for functional testing of the lighting strip at the end of the production line.
- connection element has a very high protection class against moisture ingress, for example the protection class IP9K required in vehicle construction.
- IP9K protection class
- Such a connection element can be mounted at the beginning and end of a circuit board of the LED strip. This makes it relatively easy to link several lighting strips, regardless of the length of the connection cable.
- the finished lighting strip can be easily flush-mounted into a Use the appropriate mounting profile. This property is particularly desirable in vehicle construction, for example when installing the lighting strip in the interior of trucks.
- a receiving device which can be designed as a groove, for example, serves on the one hand to further increase the separating effect of the partition wall.
- this receiving device also enables secure positioning of the connection element on the LED strip.
- the assembly of the connection element on the circuit board of the LED strip is made easier because the relative positioning of the connection element and the circuit board of the LED strip with the contacting devices attached thereto can be ensured via the receiving device.
- the electrical contact device in the terminal connecting element is a pin-shaped contact element.
- the electrical contact device in the terminal connecting element is an electrical line.
- connection element A simple way of producing the connection element is to integrate a metal pin or a pin-shaped contact element adapted to the connector into the connection element for each required electrical connection through the partition wall during production of the connection element, for example by injection molding.
- the plastic material of the connection element also ensures good electrical insulation between the individual electrical contact devices.
- pin-shaped contact elements One advantage of pin-shaped contact elements is that the connection cables that were previously required no longer have to be pre-tinned. Pre-tinning is necessary so that the connection cables can be connected to the LED strip by means of a soldering process.
- the electrical contact carriers are already integrated in the connection element. These can be soldered directly onto the circuit board without pre-tinning. This eliminates the need for the connection cables that would otherwise be used.
- electrical lines in the form of, for example, cable lines or cable strands can also be used.
- An electrical line here is also understood to mean, for example, a core of a multi-core cable.
- the individual cores can still be provided with insulation at the end intended for contacting the LED strip.
- This type of contact has the advantage that, on the one hand, the insulation already provided by the plastic material of the partition is improved and, on the other hand, the insulation can improve the sealing effect of the partition if an opening in the connection element is designed to match the diameter of an insulated line.
- the ends of the cores intended for contacting the LED strip can be free of insulation, as is necessary, for example, to produce a soldered connection or to insert the ends of the cores into spring terminals that are attached to the LED strip for electrical connection.
- two or more electrical contact devices can be arranged in a connection element. In vehicle construction, two electrical contact devices are often used for +24V and GND (earth), sometimes even three: +24V, GND, -24V. Instead of 24V, just 12V can be used to supply the LED strip. Control signals can also be applied to the LED strip via the electrical contact devices.
- connection element has a support surface and/or a contact surface for the LED strip on the side of the partition facing the LED strip.
- connection element With such support surfaces and/or contact surfaces, a secure positioning of the LED strip relative to the connection element can be achieved.
- These embodiments, implemented individually or together, are particularly advantageous if they are implemented together with the above-mentioned embodiment of a receiving device on the connection element.
- the invention further provides a light-emitting diode strip with a flexible circuit board, a plurality of light-emitting diodes arranged thereon and two ends opposite one another in a longitudinal direction, which is closed at at least one of its ends for connection to a connection element according to one of the preceding claims, wherein the light-emitting diode strip has, at the end designed for connection to a connection element, a number of solder pads corresponding to the number of electrical contact devices for electrical connection to a respective electrical contact device.
- Another LED strip according to the invention has a flexible circuit board, a plurality of LEDs arranged thereon and two ends opposite one another in a longitudinal direction and is designed at at least one of its ends for connection to a connection element, wherein the LED strip has at the end designed for connection to the connection element a number of insulation displacement terminals corresponding to the number of insulated lines for receiving a respective electrical contact device.
- the invention provides a lighting strip in which a light-emitting diode strip is arranged in a base profile and the base profile is filled with potting compound in an area carrying the light-emitting diode strip up to the partition wall of the connection element.
- the LED strip is usually glued to the bottom wall of the base profile, for example with a double-sided adhesive tape or a liquid adhesive.
- the potting compound serves to protect the LED strip, the electronic components attached to it and the circuit board from environmental influences such as moisture and corrosion.
- Transparent plastic materials such as polyurethane are usually used, which are available in liquid or gel form, for example in two components. and after casting, they are cured using electromagnetic radiation such as UV or IR light.
- the casting compound can also be made of silicone, acrylate or polyester, for example.
- the lighting strip has two connection elements.
- connection elements according to the invention are attached to both ends of the lighting strip, both ends of the lighting strip can be electrically connected using suitable connectors. In this way, several lighting strips can be linked together, i.e. connected electrically in series.
- the base profile has on an outer side of a side wall at least one rib running in a longitudinal direction for stiffening and for receiving in a receiving profile.
- Ribs that fit a mounting profile serve to stiffen the lighting strip on the one hand and to enable the lighting strip to be installed easily and securely in a mounting profile on the other.
- a mounting profile is used, for example, in the bodies of trucks and trailers flush with side walls or a ceiling surface in order to install lighting strips for interior lighting in the mounting profile.
- connection element the electrical connection between the connection element and the LED strip is provided, so that a ready-to-use system consisting of lighting strips and a connection cable suitable for both the lighting strip and the on-site connection option can be provided at the installation site using this simple procedure, which is also characterized by fail-safe assembly.
- connection element 1 according to the present invention.
- the partition wall 3 is easily recognizable with, in this example, two recesses 7, into which the connection element is usually 1 two rectangular contact pins are introduced. These recesses 7 extend through the partition wall 3 to the side of the connection element that serves for the connection to the plug connector. In the foreground you can see the support surface 4 for the LED strip 20 and the groove-shaped receiving devices 5.
- Connection elements 1 can be made from an insulated plastic, similar to the base profiles described below.
- Fig.2 The drawing shows the same connection element 1 as Fig.3 , wherein in the foreground a light-emitting diode strip 20, not yet connected to the connection element 1, with light-emitting diodes 21 arranged thereon can also be seen.
- the light-emitting diodes 21 are arranged on a circuit board 24.
- the solder pads 22 are each connected to a conductor track (not shown) on the circuit board 24.
- connection element 1 which has the electrical contacting devices 8.
- These contacting devices 8 are rectangular metal pins which extend through the partition wall 3 and, for example, with the Fig.2 shown solder pads 22 can be connected by a soldering process.
- connection element 2 shows another embodiment of the connection element 2. This also has electrical contacting devices 10. However, these contacting devices 10 are electrical cable lines.
- Fig.5 The drawing shows similar to the Fig.2 a connection element 2 in the embodiment of the Fig.4 and in the foreground a light-emitting diode strip 20 with light-emitting diodes 21 arranged on a circuit board 24.
- insulation displacement terminals 23 are attached to the LED strip, which are designed to contact the round insulated cable lines 10.
- the insulation displacement terminals 23 are each connected to a conductor track (not shown) on the circuit board 24.
- These insulated lines 10 are in the connection element 2 of the Fig. 4
- Other contacting options that are also suitable for non-insulated cables are spring terminals such as push-in terminals or tension spring terminals.
- the drawing shows an elastically designed base profile 11, which has a bottom wall 12 and two side walls 13.
- the channel-shaped inner recess 14 of the base profile 11 is formed between the bottom wall 12 and the side walls 13.
- the base profile 11 for receiving the LED strip 20 has two side walls 13 in the embodiment shown, which are formed in one piece with a bottom wall 12 of the base profile 11.
- the base profile 11 has in the longitudinal direction 15 according to the double arrow to Fig.6 its greatest extent.
- the base profile has a plurality of longitudinal ribs 16, which increase the rigidity of the base profile 11 and facilitate the installation of the finished lighting strip in a corresponding receiving profile.
- Such a receiving profile can be used, for example, in the interior fitting of the loading areas of trucks or the trailers of semi-trailers. In addition to easier installation, this also ensures secure positioning and mounting of the lighting strip in the receiving profile.
- the base profile 11 can be an elastic profile with a trough-shaped or channel-shaped cross-section, which is made, for example, from a thermoplastic elastomer (TPE), in particular a urethane-based thermoplastic elastomer (TPU), or also from a polyvinyl chloride (PVC) material or also from an elastic thermosetting material.
- TPE thermoplastic elastomer
- TPU urethane-based thermoplastic elastomer
- PVC polyvinyl chloride
- FIG.7 The drawing shows how the LED strip 20 with LEDs 21 attached to it is arranged in the base profile 11.
- the connection element 1 is located at the end of the base profile 11 and the circuit board 24 is arranged at one end.
- the connection element 1 is located at the end of the base profile 11.
- the rectangular metal pins 8 for contacting the circuit board 24 of the LED strip 20 were bent downwards in stages to facilitate electrical contact.
- the LEDs 21 can be attached to the circuit board 24 using chip-on-board (COB) technology. This makes it possible to arrange the LEDs at such a small distance from each other that the LEDs produce a uniform light for the viewer, so the viewer does not perceive individual points of light, but a continuous, one-piece or one-piece LED strip with a homogeneous radiation of light.
- COB chip-on-board
- Fig.7 the connector 32 and the partition wall 3. It is easy to see that the connector 32 is integrated into the connection connecting element 1. In this embodiment, no exposed cable is required between a connector and connection connecting element 1, which could be subject to mechanical stresses such as pulling or bending and would have to be taken into account when transporting or packaging a lighting strip.
- Fig.8 shows one end of the lighting strip 31 with the LED strip arranged thereon, on which LEDs 21 are arranged.
- the electrical contacting devices 8 of the connection element 1 are connected to contacting devices (not shown) of the LED strip, such as soldering pads.
- a potting compound 30 shown in hatched form, which completely covers the LEDs 21 on the LED strip 20.
- the potting compound 30 can be made of a polyurethane material, for example, and can be transparent, translucent, or even multi-layered.
- a partial layer directly enclosing the LEDs 21 can be transparent, and an area or partial layer arranged above it can be translucent, for example, so that the light emission of the LEDs is not hindered and the optical appearance on the top of the potting compound 30 appears uniform.
- Fig.9 shows a lighting strip 31 which is arranged in a receiving profile 19.
- the connecting element 1 is easily visible in the background. It is also shown that the part of the connecting element 1 which extends beyond the base profile 11 in the longitudinal direction 15 projects beyond the base profile 11 in order to ensure a safe containment of the casting compound 30. Since the receiving profile 19 most of the length of the lighting strip 31 is securely positioned by adapting the receiving profile 19 to the base profile 11, the part of the connecting element 1 extending in the longitudinal direction 15 beyond the base profile 11 can have a smaller external cross-section than the base profile 11.
- the perspective view of the Fig.9 shows only a section of the illumination strip 31, with the cutting plane indicated by the hatching.
- lighting strips with lengths of a few decimetres can be produced. But lighting strips with a length of 15 metres can also be produced without any problem.
- the achievable length of the lighting strip is limited only by the specific resistance and the cross-section of the electrical conductors that are used on or in the circuit board 24 of the LED strip 20 to supply the individual LEDs.
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Abstract
Vorgesehen ist ein Anschlussverbindungselement (1, 2) zur Anordnung an und elektrischen Verbindung mit einem Leuchtdiodenband (20) zur Aufnahme in einem Basisprofil (11) mit einer zur Aufnahme des Leuchtdiodenbands (20) ausgebildeten Innenausnehmung (14), wobei das Anschlussverbindungselement (1, 2) ausgebildet ist, mittels einer das Leuchtdiodenband (20) von einer von Leuchtdioden (21) abgewandten Seite bis zur Leuchtdioden (21) tragenden Seite umgreifenden Aufnahmevorrichtung (5) ein Ende des Leuchtdiodenbands (20) aufzunehmen und eine Trennwand (3) beim Vergießen mit Vergussmasse (30) des im Basisprofil (11) aufgenommenen Leuchtdiodenbands (20) aufweist, wobei die Trennwand (3) von einer elektrischen Kontaktvorrichtung (8, 10) durchsetzt wird, dass die elektrische Kontaktvorrichtung (8, 10) auf der dem Leuchtdiodenband (20) zugewandten Seite der Trennwand (3) eingerichtet ist, eine Kontaktierungseinrichtung (22, 23) auf dem Leuchtdiodenband (20) zu kontaktieren und dass die elektrische Kontaktvorrichtung (8, 10) auf der vom Leuchtdiodenband (20) abgewandten Seite der Trennwand (3) zur Verbindung mit einem Steckverbinder (32) eingerichtet ist. A connection element (1, 2) is provided for arrangement on and electrical connection with a light-emitting diode strip (20) for accommodation in a base profile (11) with an inner recess (14) designed to accommodate the light-emitting diode strip (20), wherein the connection element (1, 2) is designed to accommodate one end of the light-emitting diode strip (20) by means of a receiving device (5) that encompasses the light-emitting diode strip (20) from a side facing away from the light-emitting diodes (21) to the side carrying the light-emitting diodes (21), and has a partition wall (3) when the light-emitting diode strip (20) accommodated in the base profile (11) is cast with casting compound (30), wherein the partition wall (3) is penetrated by an electrical contact device (8, 10), that the electrical contact device (8, 10) is set up on the side of the partition wall (3) facing the light-emitting diode strip (20), a contacting device (22, 23) on the light-emitting diode strip (20) and that the electrical contact device (8, 10) on the side of the partition wall (3) facing away from the light-emitting diode strip (20) is arranged for connection to a plug connector (32).
Description
Die vorliegende Erfindung betrifft ein Anschlussverbindungselement zur Anordnung an einem und elektrischen Verbindung mit einem Leuchtdiodenband gemäß dem Oberbegriff des Anspruchs 1. Weiter betrifft die vorliegende Erfindung ein Leuchtdiodenband nach Anspruch 5 oder 6, das mit mindestens einem der genannten Anschlussverbindungselemente abgeschlossen ist. Darüber hinaus betrifft die Erfindung einen Beleuchtungsstreifen mit einem Anschlussverbindungselement und einem Leuchtdiodenband nach Anspruch 7.The present invention relates to a connection element for arrangement on and electrical connection with a light-emitting diode strip according to the preamble of claim 1. The present invention further relates to a light-emitting diode strip according to
Bei dem vorstehend erwähnten Leuchtdiodenband kann es sich um ein flexibles Leuchtdiodenband handeln, welches in einem Beleuchtungsstreifen angeordnet ist, der beispielsweise für Beleuchtungszwecke in einem Gebäude oder an beziehungsweise in einem Fahrzeug vorgesehen ist. Ein solcher Beleuchtungsstreifen wird gebildet, indem das Leuchtdiodenband in ein bereitgestelltes Profil aus Metall oder möglicherweise flexiblem Kunststoff beispielsweise durch Kleben montiert wird. Ein solches Profil wird im folgenden Text auch als Basisprofil bezeichnet. Der aus den genannten Teilen gebildete Beleuchtungsstreifen wird nach dem Einbringen des Leuchtdiodenbandes in den Aufnahmekörper oft mit durchsichtigem Kunststoff vergossen, um das darin befindliche Leuchtdiodenband vor Umwelteinflüssen wie Feuchtigkeit, Nässe und Korrosion zu schützen. Dieser Kunststoff wird im folgenden Text auch als Vergussmasse bezeichnet.The above-mentioned LED strip can be a flexible LED strip which is arranged in a lighting strip which is provided for lighting purposes in a building or on or in a vehicle, for example. Such a lighting strip is formed by mounting the LED strip in a provided profile made of metal or possibly flexible plastic, for example by gluing. Such a profile is also referred to as a base profile in the following text. The lighting strip formed from the mentioned parts is, after the LED strip has been introduced into The housing is often encapsulated with transparent plastic to protect the LED strip inside from environmental influences such as moisture, humidity and corrosion. This plastic is also referred to as encapsulation in the following text.
Ein solcher Beleuchtungsstreifen mit einem Leuchtdiodenband und ein Verfahren zu seiner Fertigung sind in der veröffentlichten internationalen Patentanmeldung
Ein Leuchtdiodenband, wie es vorstehend erwähnt wurde, wird oftmals als Platine aus flexiblem Kunststoff ausgeführt. Diese Platine weist oftmals zwei oder mehr sich entlang der Längsrichtung des Leuchtdiodenbandes erstreckende Kupferbahnen oder Kupferlayer auf, welche an einer flexiblen Leiterplatte vorgesehen sind. Die Leuchtdioden werden beispielsweise mittels Chip-on-board (COB) Technologie oder SMD Technologie an der Platine montiert und mit den Kupferbahnen verbunden. Diese Kupferbahnen müssen an den Enden des Leuchtdiodenbandes elektrisch kontaktiert werden. Dazu wird oft ein mit einem Steckverbinder versehenes Kabel an dem vom Steckverbinder entfernten Ende mit einer Kupferbahn auf der Platine verlötet. Nach dem Lötvorgang und dem Einbringen des Leuchtdiodenbands in das Basisprofil kann dann das Vergießen mit durchsichtigem Kunststoff erfolgen.A light-emitting diode strip, as mentioned above, is often designed as a circuit board made of flexible plastic. This circuit board often has two or more copper tracks or copper layers extending along the length of the light-emitting diode strip, which are provided on a flexible circuit board. The light-emitting diodes are mounted on the circuit board using chip-on-board (COB) technology or SMD technology, for example, and connected to the copper tracks. These copper tracks must be electrically contacted at the ends of the light-emitting diode strip. To do this, a cable with a connector is often soldered to a copper track on the circuit board at the end remote from the connector. After the soldering process and the insertion of the light-emitting diode strip into the base profile, it can then be encapsulated with transparent plastic.
So offenbart die Patentschrift
Damit ist jedoch die Länge des Anschlusskabels für den Beleuchtungsstreifen festgelegt. Ein und derselbe Typ des Beleuchtungsstreifens kann jedoch an verschiedenen Orten zum Einsatz kommen. Zur Beleuchtung des Innenraums des Aufbaus von Lastkraftwagen oder des Innenraums der Aufleger von Transportfahrzeugen kann es erforderlich werden, mehrere Exemplare desselben Typs des Beleuchtungsstreifens mit unterschiedlichen Kabellängen und/oder unterschiedlichen Steckverbindungen an den Kabelenden bereitzustellen. Hierbei stellt sich dem Hersteller der Beleuchtungsstreifen das Problem, dass er eine Vielzahl von Beleuchtungsstreifen mit unterschiedlichen Kabellängen und/oder Steckverbindern für das Anschlusskabel bereitstellen muss. Wenn das Vergießen maschinell erfolgt, müssen zudem Kabel und gegebenenfalls daran angebrachte Steckverbinder durch die Vergussmaschine transportiert werden. Dies ist besonders bei langen Anschlusskabeln problematisch. Die Längen der Anschlusskabel variieren zwischen wenigen Zentimetern und etwa 10 Meter.However, this determines the length of the connecting cable for the lighting strip. However, one and the same type of lighting strip can be used in different places. To illuminate the interior of the body of a lorry or the interior of the trailer of a transport vehicle, it may be necessary to provide several examples of the same type of lighting strip with different cable lengths and/or different connectors at the cable ends. In this case, the manufacturer of the lighting strip the problem that he has to provide a large number of lighting strips with different cable lengths and/or connectors for the connecting cable. If the casting is done mechanically, cables and any connectors attached to them must also be transported through the casting machine. This is particularly problematic with long connecting cables. The lengths of the connecting cables vary between a few centimeters and around 10 meters.
Es ist also aus mehreren Gründen wünschenswert, dass der Anschluss der elektrischen Versorgungskabel erst nach dem Vergießen erfolgen kann. Hierfür ist jedoch eine zuverlässige Eindämmung, also mechanische Trennung der während des Aufbringvorgangs flüssigen oder gelförmigen Vergussmasse erforderlich. Eine zuverlässige Trennung zwischen dem zu vergießenden Bereich und dem für die elektrische Kontaktierung vorgesehenen Bereich des Beleuchtungsstreifens ist deshalb erforderlich, weil der für den elektrischen Anschluss vorgesehene Bereich des Leuchtdiodenbands von Vergussmasse freizuhalten ist.For several reasons, it is therefore desirable that the electrical supply cables can only be connected after the casting. However, this requires reliable containment, i.e. mechanical separation of the liquid or gel-like casting compound during the application process. Reliable separation between the area to be cast and the area of the lighting strip intended for electrical contact is necessary because the area of the LED strip intended for electrical connection must be kept free of casting compound.
Die Offenlegungsschrift
Die Patentschrift
Das Gebrauchsmuster
Das eingangs erwähnte Anschlussverbindungselement soll sowohl eine mechanische Eindämmung der Vergussmasse über dem Leuchtdiodenband als auch eine zuverlässige und gleichzeitig flexible Möglichkeit zur elektrischen Kontaktierung des Leuchtdiodenbands bieten.The connection element mentioned at the beginning is intended to provide both a mechanical containment of the potting compound above the LED strip and a reliable and at the same time flexible possibility for electrically contacting the LED strip.
Der vorliegenden Erfindung liegt daher die Aufgabe zugrunde, ein Anschlussverbindungselement bereitzustellen, welches die vorstehenden Anforderungen erfüllt. Auch soll ein zur Verwendung mit solchen Anschlussverbindungselementen vorgesehenes Leuchtdiodenband bereitgestellt werden. Schließlich soll ein Beleuchtungsstreifen mit einem Leuchtdiodenband und daran angebrachten, zu schaffenden Anschlussverbindungselementen bereitgestellt werden.The present invention is therefore based on the object of providing a connection element which meets the above requirements. A light-emitting diode strip intended for use with such connection elements is also to be provided. Finally, a lighting strip with a light-emitting diode strip and connection elements to be created attached thereto is to be provided.
Die Erfindung weist zur Lösung dieser Aufgabe hinsichtlich des Anschlussverbindungselements die Merkmale nach dem Anspruch 1 auf. Hinsichtlich des Leuchtdiodenbands weist die Erfindung die Merkmale nach Anspruch 5 oder 6 auf. Hinsichtlich des Beleuchtungsstreifens weist die Erfindung die Merkmale nach Anspruch 7 auf. Vorteilhafte Ausgestaltungen hiervon sind in den weiteren Ansprüchen beschrieben.To solve this problem, the invention has the features of claim 1 with regard to the connection element. With regard to the LED strip, the invention has the features of
Die Erfindung schafft ein Anschlussverbindungselement zur Anordnung an einem und elektrischen Verbindung mit einem Leuchtdiodenband zur Aufnahme in einem Basisprofil mit einer Bodenwand und von der Bodenwand ausgehenden seitlichen Seitenwänden und einer von der Bodenwand und den Seitenwänden ausgebildeten, insbesondere langgestreckten Innenausnehmung zur Aufnahme des Leuchtdiodenbands, wobei das Anschlussverbindungselement zur Aufnahme eines Endes des Leuchtdiodenbands ausgebildet ist und eine beim Vergießen mit Vergussmasse des im Basisprofil aufgenommenen Leuchtdiodenbands wirksame Trennwand aufweist, wobei die Trennwand von einer elektrischen Kontaktvorrichtung durchsetzt wird, wobei die elektrische Kontaktvorrichtung auf der dem Leuchtdiodenband zugewandten Seite der Trennwand zur elektrischen Kontaktierung einer auf dem Leuchtdiodenband angeordneten Kontaktierungseinrichtung eingerichtet ist und wobei die elektrische Kontaktvorrichtung auf der vom Leuchtdiodenband abgewandten Seite der Trennwand zur Verbindung mit einem Steckverbinder eingerichtet ist, und das am Leuchtdiodenband angeordnete Anschlussverbindungselement mindestens eine das Leuchtdiodenband von einer von Leuchtdioden abgewandten Seite bis zu einer die Leuchtdioden tragenden Seite umgreifende Aufnahmevorrichtung für das Leuchtdiodenband aufweist.The invention provides a connection element for arrangement on and electrical connection with a light-emitting diode strip for accommodation in a base profile with a bottom wall and lateral side walls extending from the bottom wall and an inner recess formed by the bottom wall and the side walls, in particular an elongated inner recess for accommodation of the light-emitting diode strip, wherein the connection element is designed to accommodate one end of the light-emitting diode strip and has a partition wall which is effective when the light-emitting diode strip accommodated in the base profile is cast with casting compound, wherein the partition wall is penetrated by an electrical contact device, wherein the electrical contact device on the side of the partition wall facing the light-emitting diode strip is set up for electrical contacting of a contacting device arranged on the light-emitting diode strip and wherein the electrical contact device on the side of the partition wall facing away from the light-emitting diode strip is set up for connection to a plug connector, and the connection element arranged on the light-emitting diode strip has at least one receiving device for the light-emitting diode strip which encompasses the light-emitting diode strip from a side facing away from the light-emitting diodes to a side carrying the light-emitting diodes. LED strip.
Das Leuchtdiodenband weist eine flexible Platine auf, die eine im Vergleich zur Breite sehr große Längsausdehnung hat. Auf einer Seite dieser Platine sind Leuchtdioden angebracht, während die andere, von den Leuchtdioden abgewandte Seite der Platine mit der Bodenwand des Basisprofils verbunden wird. Somit befindet sich das Leuchtdiodenband in der Innenausnehmung des Basisprofils. Ein Leuchtdiodenband im Sinne der Erfindung wird nur an einem oder an beiden Enden elektrisch kontaktiert.The LED strip has a flexible circuit board that has a very large longitudinal dimension compared to its width. On one side of this circuit board, LEDs are attached, while the other side of the board, facing away from the LEDs, is connected to the bottom wall of the base profile. The LED strip is thus located in the inner recess of the base profile. A LED strip in the sense of the invention is only electrically contacted at one or both ends.
Das Basisprofil kann ein flexibles Kunststoffprofil sein, das dafür ausgelegt ist, das an einer Bodenwand des Kunststoffprofils festgelegte Leuchtdiodenband aufzunehmen. Das Kunststoffprofil verfügt darüber hinaus über zwei Seitenwände, die sich von gegenüberliegenden Seiten der Bodenwand so weit von der Bodenwand weg erstrecken, dass die Seitenwände ein an der Bodenwand festgelegtes Leuchtdiodenband überragen. Die Bodenwand und die beiden Seitenwände bilden somit ein langgestrecktes, kanalförmiges Profil. Nachdem ein Leuchtdiodenband in diesem Profil festgelegt wurde, wird dieses kanalförmige Profil mit einer zumindest im Bereich der Leuchtdioden transparenten Vergussmasse gefüllt.The base profile can be a flexible plastic profile that is designed to accommodate the LED strip attached to a bottom wall of the plastic profile. The plastic profile also has two side walls that extend from opposite sides of the bottom wall so far away from the bottom wall that the side walls protrude beyond a LED strip attached to the bottom wall. The bottom wall and the two side walls thus form an elongated, channel-shaped profile. After a LED strip has been attached to this profile, this channel-shaped profile is filled with a casting compound that is transparent at least in the area of the LEDs.
Durch das vorstehend beschriebene Anschlussverbindungselement mit der Trennwand wird eine sichere Trennung des vergossenen Bereiches von der elektrischen Kontaktierung eines mit dem Leuchtdiodenband versehenen Beleuchtungsstreifens realisiert. Die Kontaktierung auf der vom Leuchtdiodenband abgewandten Seite erfolgt hier über einen Steckverbinder, der entweder vor dem Verguss oder erst nach der Fertigung des kompletten Beleuchtungsstreifens am Anschlussverbindungselement angebracht werden kann. Der Kontakt zwischen Steckverbinder und dem im Inneren des Beleuchtungsstreifens angebrachten Leuchtdiodenband erfolgt mittels einer weiter unten beschriebenen elektrischen Kontaktvorrichtung, die in das Anschlussverbindungselement integriert ist. Dadurch wird vorteilhaft erreicht, dass der fertige Beleuchtungsstreifen jederzeit mit einem Kabel gewünschter Länge ausgerüstet werden kann. Auch eine Anpassung an Kundenwünsche für eine Verbindung am Anschlusskabel kann zu einem beliebigen Zeitpunkt nach der Fertigung des Beleuchtungsstreifens durchgeführt werden. Dadurch wird eine Reduzierung der Teilevielfalt und eine Vereinfachung der Lagerhaltung erreicht.The connection element with the partition wall described above ensures that the encapsulated area is safely separated from the electrical contact of a lighting strip provided with the LED strip. The contact on the side facing away from the LED strip is made here via a plug connector, which can be attached to the connection element either before encapsulation or after the complete lighting strip has been manufactured. The contact between the plug connector and the LED strip attached inside the lighting strip is made using an electrical contact device described below, which is integrated into the connection element. This has the advantage that the finished lighting strip can be equipped with a cable of the desired length at any time. An adaptation to customer requirements for a connection to the connection cable can also be carried out at any time after the lighting strip has been manufactured. This reduces the variety of parts and simplifies storage.
Eine elektrische Kontaktvorrichtung ist auf der dem Leuchtdiodenband zugewandten Seite der Trennwand zur Verbindung mit auf dem Leuchtdiodenband angebrachten Kontakteinrichtungen wie Lötpads oder Schneidklemmen eingerichtet. Auf der den Steckverbinder zugewandten Seite der Trennwand ist die elektrische Kontaktvorrichtung zur Verbindung mit dem Steckverbinder eingerichtet. Es kann sich dabei um Metallstifte, elektrische Leitungen oder isolierte elektrische Leitungen handeln.An electrical contact device is provided on the side of the partition facing the LED strip for connection to the LED strip Contact devices such as solder pads or insulation displacement terminals are installed. The electrical contact device for connecting to the connector is installed on the side of the partition facing the connector. These can be metal pins, electrical wires or insulated electrical wires.
Ein erfindungsgemäßes Anschlussverbindungselement dient vorteilhaft dazu, ein Überströmen der Vergussmasse an den Enden des Leuchtdiodenbandes in Bereiche des Beleuchtungsstreifens, die der elektrischen Kontaktierung dienen, zu verhindern. Solche Anschlussverbindungselemente werden auch als Wedges bezeichnet. Ein solches Anschlussverbindungselement kann an beiden Enden - in Längsrichtung gesehen - des Leuchtdiodenbands angebracht werden, bevor das Leuchtdiodenband in das Basisprofil eingebracht wird.A connection element according to the invention advantageously serves to prevent the casting compound from flowing over the ends of the LED strip into areas of the lighting strip that are used for electrical contact. Such connection elements are also referred to as wedges. Such a connection element can be attached to both ends - viewed in the longitudinal direction - of the LED strip before the LED strip is inserted into the base profile.
Somit besteht ein Vorteil dieser Erfindung in der Möglichkeit, das Anschlussverbindungselement direkt bei oder unmittelbar nach der Bestückung der jeweiligen Platine in einem "Pick and Place" Verfahren zusammen mit den übrigen Elektronikkomponenten wie LEDs und Ansteuerschaltungen zu bestücken.Thus, one advantage of this invention is the possibility of assembling the connection element directly during or immediately after assembling the respective circuit board in a "pick and place" process together with the other electronic components such as LEDs and control circuits.
Ein weiterer Vorteil besteht darin, dass ein Transport des Anschlusskabels durch die Vergussmaschine und das am Ende der Produktionslinie angeordnete Gerät für den Funktionstest des Beleuchtungsstreifens unterbleiben kann.A further advantage is that the connecting cable does not need to be transported through the potting machine and the device for functional testing of the lighting strip at the end of the production line.
Ein solches Anschlussverbindungselement weist trotz seiner geringen Baugröße eine sehr hohe Schutzklasse gegen Feuchtigkeitseintritt auf, beispielsweise die im Fahrzeugbau erforderliche Schutzklasse IP9K. Ein solches Anschlussverbindungselement kann am Anfang und am Ende einer Platine des Leuchtdiodenbands montiert werden. Dadurch erreicht man eine relativ einfache Verkettung mehrerer Beleuchtungsstreifen unabhängig von der Anschlusskabellänge.Despite its small size, such a connection element has a very high protection class against moisture ingress, for example the protection class IP9K required in vehicle construction. Such a connection element can be mounted at the beginning and end of a circuit board of the LED strip. This makes it relatively easy to link several lighting strips, regardless of the length of the connection cable.
Wenn der Außenquerschnitt des Steckverbinders und des den Steckverbinder tragenden Teils des Anschlussverbindungselements an den Innenquerschnitt des Basisprofils angepasst ist, lässt sich der fertige Beleuchtungsstreifen leicht flächenbündig in ein entsprechendes Aufnahmeprofil einsetzen. Diese Eigenschaft ist im Fahrzeugbau besonders wünschenswert, zum Beispiel beim Einbau des Beleuchtungsstreifens beim Innenausbau von Lastkraftwagen.If the external cross-section of the connector and the connector-carrying part of the connection element is adapted to the internal cross-section of the base profile, the finished lighting strip can be easily flush-mounted into a Use the appropriate mounting profile. This property is particularly desirable in vehicle construction, for example when installing the lighting strip in the interior of trucks.
Eine Aufnahmevorrichtung, die zum Beispiel als Nut ausgeführt sein kann, dient einerseits der weiteren Erhöhung der trennenden Wirkung der Trennwand. Andererseits ermöglicht diese Aufnahmevorrichtung auch eine sichere Positionierung des Anschlussverbindungselements am Leuchtdiodenband. Weiter wird in dieser Ausführungsform die Montage des Anschlussverbindungselements an die Platine des Leuchtdiodenbands erleichtert, weil über die Aufnahmevorrichtung die relative Positionierung von Anschlussverbindungselement und Platine des Leuchtdiodenbands mit darauf angebrachten Kontaktierungseinrichtungen sichergestellt werden kann.A receiving device, which can be designed as a groove, for example, serves on the one hand to further increase the separating effect of the partition wall. On the other hand, this receiving device also enables secure positioning of the connection element on the LED strip. In addition, in this embodiment, the assembly of the connection element on the circuit board of the LED strip is made easier because the relative positioning of the connection element and the circuit board of the LED strip with the contacting devices attached thereto can be ensured via the receiving device.
In einer Ausführungsform ist die elektrische Kontaktvorrichtung im Anschlussverbindungselement ein stiftförmiges Kontaktelement.In one embodiment, the electrical contact device in the terminal connecting element is a pin-shaped contact element.
In einer von der letztgenannten verschiedenen Ausführungsform ist die elektrische Kontaktvorrichtung im Anschlussverbindungselement eine elektrische Leitung.In an embodiment different from the latter, the electrical contact device in the terminal connecting element is an electrical line.
Eine einfache Möglichkeit bei der Herstellung des Anschlussverbindungselements besteht darin, für jede erforderliche elektrische Verbindung durch die Trennwand einen Metallstift oder ein an den Steckverbinder angepasstes stiftförmiges Kontaktelement bei der Herstellung des Anschlussverbindungselements, die beispielsweise durch Spritzgießen erfolgt, in das Anschlussverbindungselement zu integrieren. Dabei bewirkt das Kunststoffmaterial des Anschlussverbindungselements gleichzeitig eine gute elektrische Isolierung zwischen den einzelnen elektrischen Kontaktvorrichtungen. Ein Vorteil stiftförmiger Kontaktelemente besteht darin, dass die bisher erforderlichen Anschlusskabel nicht mehr vorverzinnt werden müssen. Das Vorverzinnen ist nötig, damit die Anschlusskabel an das Leuchtdiodenband mittels eines Lötvorgangs angeschlossen werden können. Bei dem Anschlussverbindungselement sind bereits die elektrischen Kontaktträger integriert. Diese können ohne Vorverzinnung direkt auf die Platine gelötet werden. Somit entfallen die sonst verwendeten Anschlusskabel.A simple way of producing the connection element is to integrate a metal pin or a pin-shaped contact element adapted to the connector into the connection element for each required electrical connection through the partition wall during production of the connection element, for example by injection molding. The plastic material of the connection element also ensures good electrical insulation between the individual electrical contact devices. One advantage of pin-shaped contact elements is that the connection cables that were previously required no longer have to be pre-tinned. Pre-tinning is necessary so that the connection cables can be connected to the LED strip by means of a soldering process. The electrical contact carriers are already integrated in the connection element. These can be soldered directly onto the circuit board without pre-tinning. This eliminates the need for the connection cables that would otherwise be used.
Anstelle von Stiften, stiftförmigen Kontaktelementen oder Blechstreifen können auch elektrische Leitungen in der Form von beispielsweise Kabelleitungen oder Kabellitzen verwendet werden. Unter einer elektrischen Leitung versteht man hier beispielsweise auch eine Ader eines mehradrigen Kabels. Die einzelnen Adern können an dem zur Kontaktierung des Leuchtdiodenbands vorgesehenen Ende noch mit der Isolierung versehen sein. Diese Art der Kontaktierung hat den Vorteil, dass einerseits die durch das Kunststoffmaterial der Trennwand bereits gegebene Isolierung verbessert wird und andererseits die Isolierung bei entsprechender Ausführung einer an den Durchmesser einer isolierten Leitung angepassten Öffnung im Anschlussverbindungselement die Abdichtungswirkung der Trennwand verbessert werden kann. Es ist weiterhin möglich, dass die zur Kontaktierung mit dem Leuchtdiodenband vorgesehenen Enden der Adern von der Isolierung befreit sind, wie es zum Beispiel zur Herstellung einer Lötverbindung oder zum Einstecken der Enden der Adern in Federklemmen, die auf dem Leuchtdiodenband zur elektrischen Verbindung angebracht sind, erforderlich ist. Es versteht sich, dass zwei oder mehr elektrische Kontaktvorrichtungen in einem Anschlussverbindungselement angeordnet sein können. Im Fahrzeugbau werden oft zwei elektrische Kontaktvorrichtungen für +24V und GND (Erde) verwendet, mitunter auch drei: +24V, GND, -24V. Statt 24V können auch nur 12V zur Versorgung des Leuchtdiodenbands verwendet werden. Weiter können über die elektrischen Kontaktvorrichtungen auch Steuersignale auf das Leuchtdiodenband gebracht werden.Instead of pins, pin-shaped contact elements or sheet metal strips, electrical lines in the form of, for example, cable lines or cable strands can also be used. An electrical line here is also understood to mean, for example, a core of a multi-core cable. The individual cores can still be provided with insulation at the end intended for contacting the LED strip. This type of contact has the advantage that, on the one hand, the insulation already provided by the plastic material of the partition is improved and, on the other hand, the insulation can improve the sealing effect of the partition if an opening in the connection element is designed to match the diameter of an insulated line. It is also possible for the ends of the cores intended for contacting the LED strip to be free of insulation, as is necessary, for example, to produce a soldered connection or to insert the ends of the cores into spring terminals that are attached to the LED strip for electrical connection. It goes without saying that two or more electrical contact devices can be arranged in a connection element. In vehicle construction, two electrical contact devices are often used for +24V and GND (earth), sometimes even three: +24V, GND, -24V. Instead of 24V, just 12V can be used to supply the LED strip. Control signals can also be applied to the LED strip via the electrical contact devices.
In einer Ausführungsform weist das Anschlussverbindungselement auf der dem Leuchtdiodenband zugewandten Seite der Trennwand eine Auflagefläche und/oder eine Anlagefläche für das Leuchtdiodenband auf.In one embodiment, the connection element has a support surface and/or a contact surface for the LED strip on the side of the partition facing the LED strip.
Mit solchen Auflageflächen und/oder Anlageflächen lässt sich eine sichere Positionierung des Leuchtdiodenbands relativ zum Anschlussverbindungselement erreichen. Diese einzeln oder gemeinsam verwirklichten Ausführungsformen sind besonders vorteilhaft, wenn sie zusammen mit der vorstehend genannten Ausführungsform einer Aufnahmevorrichtung am Anschlussverbindungselement verwirklicht werden.With such support surfaces and/or contact surfaces, a secure positioning of the LED strip relative to the connection element can be achieved. These embodiments, implemented individually or together, are particularly advantageous if they are implemented together with the above-mentioned embodiment of a receiving device on the connection element.
Die Erfindung schafft weiter ein Leuchtdiodenband mit einer flexiblen Platine, einer Vielzahl an darauf angeordneten Leuchtdioden und zwei einander in einer Längsrichtung gegenüberliegenden Enden, das an mindestens einem seiner Enden zur Verbindung mit einem Anschlussverbindungselement nach einem der vorstehenden Ansprüche abgeschlossen ist, wobei das Leuchtdiodenband an dem zur Verbindung mit einem Anschlussverbindungselement eingerichteten Ende eine der Anzahl der elektrischen Kontaktvorrichtungen entsprechende Anzahl an Lötpads zur elektrischen Verbindung mit einer jeweiligen elektrischen Kontaktvorrichtung aufweist.The invention further provides a light-emitting diode strip with a flexible circuit board, a plurality of light-emitting diodes arranged thereon and two ends opposite one another in a longitudinal direction, which is closed at at least one of its ends for connection to a connection element according to one of the preceding claims, wherein the light-emitting diode strip has, at the end designed for connection to a connection element, a number of solder pads corresponding to the number of electrical contact devices for electrical connection to a respective electrical contact device.
Ein weiteres erfindungsgemäßes Leuchtdiodenband weist eine flexible Platine, eine Vielzahl an darauf angeordneten Leuchtdioden und zwei einander in einer Längsrichtung gegenüberliegende Enden auf und ist an mindestens einem seiner Enden zur Verbindung mit einem Anschlussverbindungselement eingerichtet, wobei das Leuchtdiodenband an dem zur Verbindung mit dem Anschlussverbindungselement eingerichteten Ende eine der Anzahl der isolierten Leitungen entsprechende Anzahl an Schneidklemmen zur Aufnahme einer jeweiligen elektrischen Kontaktvorrichtung aufweist.Another LED strip according to the invention has a flexible circuit board, a plurality of LEDs arranged thereon and two ends opposite one another in a longitudinal direction and is designed at at least one of its ends for connection to a connection element, wherein the LED strip has at the end designed for connection to the connection element a number of insulation displacement terminals corresponding to the number of insulated lines for receiving a respective electrical contact device.
Eine Kontaktierung über Schneidklemmen ermöglicht eine zuverlässige Verbindung mit elektrischen isolierten Leitungen. Auch Federklemmen sind vorteilhaft, wenn die Enden der elektrischen Leitungen von einer Isolierung befreit sind.Contacting via insulation displacement terminals enables a reliable connection to electrically insulated cables. Spring terminals are also advantageous if the ends of the electrical cables are free of insulation.
Die Erfindung schafft schließlich einen Beleuchtungsstreifen, bei dem ein Leuchtdiodenband in einem Basisprofil angeordnet ist und das Basisprofil in einem das Leuchtdiodenband tragenden Bereich bis zur Trennwand des Anschlussverbindungselements mit Vergussmasse gefüllt ist.Finally, the invention provides a lighting strip in which a light-emitting diode strip is arranged in a base profile and the base profile is filled with potting compound in an area carrying the light-emitting diode strip up to the partition wall of the connection element.
Das Leuchtdiodenband wird üblicherweise an der Bodenwand des Basisprofils festgeklebt, zum Beispiel mit einem doppelseitigen Klebeband oder einem flüssigen Klebstoff. Die Vergussmasse dient dabei zum Schutz des Leuchtdiodenbands, der darauf angebrachten elektronischen Bauelemente und der Platine vor Umwelteinflüssen wie Nässe und Korrosion. Üblicherweise verwendet man transparente Kunststoffmaterialien wie Polyurethan, die in flüssigem oder gelförmigen Zustand beispielsweise in zwei Komponenten angeliefert werden und nach dem Vergießen beispielsweise mit elektromagnetischer Strahlung, wie UV- oder IR-Licht ausgehärtet werden. Die Vergussmasse kann beispielsweise auch aus Silikon, Acrylat oder Polyester gebildet werden.The LED strip is usually glued to the bottom wall of the base profile, for example with a double-sided adhesive tape or a liquid adhesive. The potting compound serves to protect the LED strip, the electronic components attached to it and the circuit board from environmental influences such as moisture and corrosion. Transparent plastic materials such as polyurethane are usually used, which are available in liquid or gel form, for example in two components. and after casting, they are cured using electromagnetic radiation such as UV or IR light. The casting compound can also be made of silicone, acrylate or polyester, for example.
In einer Ausführungsform der Erfindung weist der Beleuchtungsstreifen zwei Anschlussverbindungselemente auf.In one embodiment of the invention, the lighting strip has two connection elements.
Wenn an beiden Enden des Beleuchtungsstreifens erfindungsgemäße Anschlussverbindungselemente angebracht sind, können beide Enden des Beleuchtungsstreifens mit geeigneten Steckverbindern elektrisch verbunden werden. So können mehrere Beleuchtungsstreifen miteinander verkettet, also elektrisch in Reihe geschaltet werden.If connection elements according to the invention are attached to both ends of the lighting strip, both ends of the lighting strip can be electrically connected using suitable connectors. In this way, several lighting strips can be linked together, i.e. connected electrically in series.
In einer Ausführungsform des Beleuchtungsstreifens weist das Basisprofil an einer Außenseite einer Seitenwand mindestens eine in einer Längsrichtung verlaufende Rippe zur Versteifung und zur Aufnahme in einem Aufnahmeprofil auf.In one embodiment of the lighting strip, the base profile has on an outer side of a side wall at least one rib running in a longitudinal direction for stiffening and for receiving in a receiving profile.
Zu einem Aufnahmeprofil passende Rippen dienen einerseits der Versteifung des Beleuchtungsstreifens und andererseits einer einfachen und sicheren Montage des Beleuchtungsstreifens in einem Aufnahmeprofil. Ein solches Aufnahmeprofil wird zum Beispiel in den Aufbauten von Lastkraftwagen und Auflegern flächenbündig mit Seitenwänden oder einer Deckenfläche verwendet, um in dem Aufnahmeprofil Beleuchtungsstreifen zur Innenbeleuchtung zu montieren.Ribs that fit a mounting profile serve to stiffen the lighting strip on the one hand and to enable the lighting strip to be installed easily and securely in a mounting profile on the other. Such a mounting profile is used, for example, in the bodies of trucks and trailers flush with side walls or a ceiling surface in order to install lighting strips for interior lighting in the mounting profile.
Auf diese Weise wird die elektrische Verbindung zwischen dem Anschlussverbindungselement und dem Leuchtdiodenband bereitgestellt, sodass über diese einfache Vorgehensweise ein einsatzbereites System aus Beleuchtungsstreifen und sowohl zum Beleuchtungsstreifen als auch zur Anschlussmöglichkeit vor Ort passendem Anschlusskabel am Montageort bereitgestellt werden kann, welches sich auch durch eine fehlersichere Montage auszeichnet.In this way, the electrical connection between the connection element and the LED strip is provided, so that a ready-to-use system consisting of lighting strips and a connection cable suitable for both the lighting strip and the on-site connection option can be provided at the installation site using this simple procedure, which is also characterized by fail-safe assembly.
Die Erfindung wird im Folgenden anhand der Zeichnung näher erläutert. Diese zeigt in:
-
Fig. 1 eine perspektivische Darstellung einer Ausführungsform eines Anschlussverbindungselements ohne Kontaktvorrichtung; -
Fig. 2 eine perspektivische Darstellung einer Ausführungsform eines Anschlussverbindungselements mit einem Leuchtdiodenband vor dem Zusammenfügen dieser Bauteile; -
Fig. 3 eine perspektivische Darstellung einer Ausführungsform eines Anschlussverbindungselements mit Kontaktvorrichtungen; -
Fig. 4 eine perspektivische Darstellung einer zweiten Ausführungsform eines Anschlussverbindungselements mit Kontaktvorrichtungen; -
Fig. 5 in einer Darstellung ähnlich derjenigen nachFig. 2 die zweite Ausführungsform eines Anschlussverbindungselements mit einem zweiten Leuchtdiodenband vor dem Zusammenfügen dieser Bauteile; -
Fig. 6 eine perspektivische Darstellung einer Ausführungsform eines Basisprofils; -
Fig. 7 eine perspektivische Ansicht eines noch nicht vergossenen Beleuchtungsstreifens mit Basisprofil, Leuchtdiodenband, Anschlussverbindungselement und zugehörigem Steckverbinder; -
Fig. 8 ein Ende eines Beleuchtungsstreifens mit daran angebrachten Anschlussverbindungselement; -
Fig. 9 einen Beleuchtungsstreifen mit daran angebrachtem Anschlussverbindungselement in einem Aufnahmeprofil.
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Fig.1 a perspective view of an embodiment of a connection element without a contact device; -
Fig.2 a perspective view of an embodiment of a connection element with a light-emitting diode strip before these components are joined together; -
Fig.3 a perspective view of an embodiment of a connection element with contact devices; -
Fig.4 a perspective view of a second embodiment of a connection element with contact devices; -
Fig.5 in a representation similar to that ofFig.2 the second embodiment of a connection element with a second LED strip before joining these components; -
Fig.6 a perspective view of an embodiment of a base profile; -
Fig.7 a perspective view of a not yet cast lighting strip with base profile, LED strip, connection element and associated connector; -
Fig.8 one end of a lighting strip with a connection connector attached; -
Fig.9 a lighting strip with an attached connection element in a receiving profile.
Bei dem Basisprofil 11 kann es sich um ein elastisches, im Querschnitt wannenförmiges oder kanalförmiges Profil handeln, welches beispielsweise aus einem thermoplastischen Elastomer (TPE), insbesondere einem thermoplastischen Elastomer auf Urethanbasis (TPU) gefertigt ist, oder auch auf Basis eines Polyvinylchlorid (PVC) Werkstoffs oder auch auf Basis eines elastischen duroplastischen Werkstoffs gefertigt ist.The
In
Aus
Mit den vorstehend genannten Merkmalen lassen sich Beleuchtungsstreifen mit Längen von einigen Dezimetern realisieren. Aber auch Beleuchtungsstreifen mit 15 Meter Länge können problemlos hergestellt werden. Bei parallel geschalteten Leuchtdioden wird die erreichbare Länge des Beleuchtungsstreifens lediglich durch den spezifischen Widerstand und den Querschnitt der elektrischen Leiter begrenzt, die an oder in der Platine 24 des Leuchtdiodenbands 20 der Versorgung der einzelnen Leuchtdioden dienen.With the features mentioned above, lighting strips with lengths of a few decimetres can be produced. But lighting strips with a length of 15 metres can also be produced without any problem. With LEDs connected in parallel, the achievable length of the lighting strip is limited only by the specific resistance and the cross-section of the electrical conductors that are used on or in the
Hinsichtlich vorstehend im Einzelnen nicht näher erläuterter Merkmale der Erfindung wird im Übrigen ausdrücklich auf die Patentansprüche und die Zeichnung verwiesen.With regard to features of the invention not explained in detail above, express reference is made to the patent claims and the drawings.
- 1. Anschlussverbindungselement1. Connection element
- 2. Anschlussverbindungselement2. Connection element
- 3. Trennwand3. Partition wall
- 4. Auflagefläche4. Support surface
- 5. Aufnahmevorrichtung5. Recording device
- 6. Anlagefläche6. Contact surface
- 7. Öffnung für elektrische Kontaktvorrichtung7. Opening for electrical contact device
- 8. Elektrische Kontaktvorrichtung (Kontaktstift)8. Electrical contact device (contact pin)
- 10. Elektrische Kontaktvorrichtung (elektrische Leitung)10. Electrical contact device (electrical line)
- 11. Basisprofil11. Basic profile
- 12. Bodenwand des Basisprofils12. Bottom wall of the base profile
- 13. Seitenwand des Basisprofils13. Side wall of the base profile
- 14. Innenausnehmung14. Inner recess
- 15. Längsrichtung15. Longitudinal direction
- 16. Rippe16th rib
- 19. Aufnahmeprofil19. Recording profile
- 20. Leuchtdiodenband20. LED strip
- 21. Leuchtdiode21. Light-emitting diode
- 22. Kontaktierungseinrichtung (Lötpunkt)22. Contacting device (soldering point)
- 23. Kontaktierungseinrichtung (Schneidklemme)23. Contacting device (insulation displacement terminal)
- 24. Platine24. Circuit board
- 30. Vergussmasse30. Casting compound
- 31. Beleuchtungsstreifen31. Lighting strips
- 32. Steckverbinder32. Connectors
Claims (9)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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DE102022128306.2A DE102022128306A1 (en) | 2022-10-26 | 2022-10-26 | Connection element for a light-emitting diode strip, light-emitting diode strip provided with a connection element and lighting strip with such a light-emitting diode strip |
Publications (1)
Publication Number | Publication Date |
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EP4361497A1 true EP4361497A1 (en) | 2024-05-01 |
Family
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EP23202632.8A Pending EP4361497A1 (en) | 2022-10-26 | 2023-10-10 | Connection element for a light-emitting diode strip, light-emitting diode strip provided with a connection element, and lighting strip comprising such a light-emitting diode strip |
Country Status (2)
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EP (1) | EP4361497A1 (en) |
DE (1) | DE102022128306A1 (en) |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
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CN101060733A (en) | 2007-04-30 | 2007-10-24 | 林万炯 | Flexible bar type waterproof LED lamp forming process |
CN201155673Y (en) | 2008-02-04 | 2008-11-26 | 林万炯 | Flexible water proof LED lamp string |
DE102009020851A1 (en) | 2009-05-12 | 2010-11-25 | Osram Gesellschaft mit beschränkter Haftung | Light strip and method for producing a light strip |
DE102008013454B4 (en) | 2008-03-10 | 2012-05-31 | Vossloh-Schwabe Optoelectronic Gmbh & Co. Kg | LED assembly for lighting |
EP2562470A2 (en) * | 2011-08-24 | 2013-02-27 | OSRAM GmbH | A method of producing a lighting device, and a corresponding lighting device |
US20140334142A1 (en) * | 2013-05-09 | 2014-11-13 | Inspired LED, LLC | Extended Length Flexible LED Light Strip System |
WO2018069453A1 (en) | 2016-10-12 | 2018-04-19 | Gerhard Kager | Led strip, method for producing an led tape, and led tape |
US10753596B1 (en) | 2020-02-21 | 2020-08-25 | Elemental LED, Inc. | Apparatus and method for making encapsulated linear lighting of arbitrary length |
-
2022
- 2022-10-26 DE DE102022128306.2A patent/DE102022128306A1/en active Pending
-
2023
- 2023-10-10 EP EP23202632.8A patent/EP4361497A1/en active Pending
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
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CN101060733A (en) | 2007-04-30 | 2007-10-24 | 林万炯 | Flexible bar type waterproof LED lamp forming process |
CN201155673Y (en) | 2008-02-04 | 2008-11-26 | 林万炯 | Flexible water proof LED lamp string |
DE102008013454B4 (en) | 2008-03-10 | 2012-05-31 | Vossloh-Schwabe Optoelectronic Gmbh & Co. Kg | LED assembly for lighting |
DE102009020851A1 (en) | 2009-05-12 | 2010-11-25 | Osram Gesellschaft mit beschränkter Haftung | Light strip and method for producing a light strip |
EP2562470A2 (en) * | 2011-08-24 | 2013-02-27 | OSRAM GmbH | A method of producing a lighting device, and a corresponding lighting device |
US20140334142A1 (en) * | 2013-05-09 | 2014-11-13 | Inspired LED, LLC | Extended Length Flexible LED Light Strip System |
WO2018069453A1 (en) | 2016-10-12 | 2018-04-19 | Gerhard Kager | Led strip, method for producing an led tape, and led tape |
US10753596B1 (en) | 2020-02-21 | 2020-08-25 | Elemental LED, Inc. | Apparatus and method for making encapsulated linear lighting of arbitrary length |
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