DE202018107302U1 - LED circuit board module and lighting system - Google Patents

Abstract

LED circuit board module (700), comprising • a flat printed circuit board (200) extending in an extension plane (EE) with two flat sides (210, 220) which are connected to one another by a circumferential end face (230) in order to jointly form an outer contour of the To limit the printed circuit board (200), the printed circuit board (200) having at least one of the two flat sides (210, 220) and / or the end face (230) a recess (250) which extends into the outer contour; and • a connection terminal (100) with a terminal contact for electrically contacting at least one electrical conductor (500) with the printed circuit board (200) and a conductor insertion opening (110) for inserting the electrical conductor (500) towards the terminal contact in a defined insertion direction ( ER), the connecting terminal (100) being received in the recess (250) such that the direction of insertion (ER) is aligned essentially parallel to the extension plane (EE) and the conductor insertion opening (110) within the recess (250) in the Direction of insertion (ER) is accessible.

Description

The present invention relates to an LED printed circuit board module, comprising a printed circuit board and a connecting terminal, and a lighting system, comprising the LED printed circuit board module according to the invention and a lamp.

It is known from the prior art to provide terminals for the electrical connection of LED circuit board modules.

For this purpose, the terminals are attached, for example, to the front of the board, i.e. the side that is equipped with the electronic components, for example LEDs. However, this can lead to unwanted shading effects, since the terminal blocks parts of the light emitted by the LED.

Furthermore, it is also known to provide the terminals on the back of the board, that is to say on the side facing away from the populated side of the board, in order to avoid restricting the radiation area of the LEDs in this way. For example, a through-connection of the circuit board is used for this. There are also variants where the terminal is provided on the back and then reaches through a through opening to the front, where it is contacted electrically. However, such an arrangement of the clamp increases the installation space required on the rear side of the board, since the entire height of the clamp projects from the board. Furthermore, the connection of further components, such as a heat sink, to the back of the circuit board is made more difficult, since the above terminal must be taken into account here.

It is also over EP 3 114 734 A1 known to use the clamp in part in a through hole in the board. The terminal has a conductor insertion channel with a terminal opening for inserting the conductor into the terminal. The conductor insertion channel protrudes from the rear of the circuit board at least with the height of the terminal opening in order to enable the rear connection of the conductor to the circuit board via the terminal. The terminal itself is then electrically connected through the board on the front thereof. However, it is also disadvantageous in this embodiment that the terminal protrudes on the back of the circuit board and thus increases the installation space to be made available on the back or complicates the arrangement of further elements. For these reasons, such a solution is also disadvantageous for the connection between individual circuit board modules.

All of the known embodiments of the prior art thus have in common that the clamp protrudes either on the front or on the back of the printed circuit board in a disadvantageous manner and thus increases the installation space required for the printed circuit board module. It is also disadvantageous that the terminals, due to their respective electrical contacting method (direct / through-hole / through-contacting) with the circuit board on certain mounting sides, i.e. the front or the back of the board. This means that a large number of different types of clamps must be kept ready so that the corresponding clamp can be installed depending on the application. This is associated with increased costs. Furthermore, the flexibility in the design and design of an LED circuit board module is restricted, since application-related are to be used. Furthermore, when designing the LED circuit board module, a decision must be made on which side of the circuit board the connection of the circuit board to the electrical conductor should take place via the terminal. It is therefore difficult to react to changes in application requirements that will be required later and with reduced flexibility. This further increases the overall cost.

It is therefore an object of the present invention to provide an LED circuit board module and a lighting system with which the aforementioned disadvantages known from the prior art can be overcome. In particular, the overall height of such an LED circuit board module is to be reduced.

This object is solved by the subject matter of the independent claim. The dependent claims develop the central idea of the present invention in a particularly advantageous manner.

A first aspect of the present invention relates to an LED printed circuit board module which has a flat printed circuit board which extends in an extension plane and has two flat sides which are connected to one another by a circumferential end face in order to jointly delimit an outer contour of the printed circuit board.

According to the invention, “areal” is essentially understood to mean an extension in one plane.

The circuit board has a recess on at least one of the two flat sides and / or the end face, which extends into the outer contour.

The LED circuit board module also has a connection terminal with a terminal contact for electrically contacting at least one electrical conductor with the circuit board and a conductor insertion opening for introducing the electrical Conductor to the terminal contact in a defined insertion direction.

In this case, the connection terminal is received in the recess in such a way that the insertion direction is aligned essentially parallel to the extension plane and the conductor insertion opening is accessible within the recess in the insertion direction.

According to the invention, a “parallel direction / orientation / orientation” is understood to mean that the direction / orientation / orientation in question is genuinely parallel to a reference direction (or reference plane) or that it extends in / within the same (identical) plane.

In addition, according to the invention, “essentially parallel” is understood to mean that the direction / orientation / orientation in question does not necessarily have to have an identical slope to the reference direction (or reference plane), but rather slight deviations from the reference value which the person skilled in the art may call would be considered appropriate (for example, a deviation within 0-3% of the absolute amount of the slope).

Furthermore, according to the invention, “accessibility of the conductor insertion opening” is understood to mean that access to the conductor insertion opening is made possible for the insertion of the electrical conductor and the conductor insertion opening is thus available for use and for fulfilling its function.

In other words, the present invention can thus be summarized in such a way that an LED printed circuit board module is made available which has a printed circuit board and a connecting terminal arranged therein. The printed circuit board extends in an extension plane and has a flat shape. Your outer contour is limited by two flat sides and a circumferential end face. The circuit board also has a recess. The recess can be provided on at least one of the two flat sides. The recess can also be provided on the front side. However, the circuit board can also have a recess both on the end face and on at least one of the flat sides. The connection terminal is received in the recess. The connection terminal has a terminal contact and a conductor insertion opening into which an electrical conductor to the terminal contact can be inserted in a specific (defined) insertion direction. The connection terminal is received in the recess in such a way that the direction of insertion of the conductor into the conductor insertion opening is oriented essentially parallel to the plane of extension. In addition, the conductor insertion opening within the recess is accessible in the direction of insertion (preferably structurally, i.e. in terms of its spatial arrangement within the recess, and / or preferably functionally, i.e. to fulfill the intended function).

It can thereby be achieved, in particular, that the electrical conductor can be inserted into the connection terminal at least partially within the cutout and with an orientation that is parallel to the plane of extent of the printed circuit board. A mechanical construction of the connection terminal on the printed circuit board can thus be avoided or at least greatly minimized. In particular, it can be achieved that the installation space required for connecting the LED circuit board module can be limited to the guidance of the conductor (for example, to a height of the structure with the outside diameter of the conductor). In particular, the shape of the printed circuit board is advantageously used in that the electrical conductor can be inserted parallel to the plane of extent of the printed circuit board, and as little space as possible is required by guiding the conductor. In addition, the space created by the recess is advantageously used by the invention in that the connecting terminal with the conductor insertion opening is arranged within the recess. Thus, the present invention makes it possible to overcome a large number of the disadvantages known from the prior art.

According to a preferred development of the invention, the connection terminal can be arranged in the recess in such a way that the conductor insertion opening is provided between the flat sides. The conductor insertion opening can preferably be provided centrally between the flat sides.

It can thereby be achieved in particular that the mechanical structure can be further reduced by the connection terminal, if present. In particular, the guide of the conductor is also moved directly in front of the insertion opening into an area between the two flat sides.

According to a further advantageous development of the invention, the cutout can be provided on the end face and extend from the end face into the outer contour, so that the conductor insertion opening (via the end face) is accessible in the insertion direction.

In particular, it can thereby be achieved that a connection of the LED circuit board module to a conductor can be provided via the connection terminal via the end face. This makes it possible to connect the conductor to the side of the circuit board and thus to the one immediately adjacent to the flat sides (above or below to further reduce the necessary installation space on the flat sides. In addition, it is also possible for the LED circuit board module to be connected either via one of the flat sides or the front side, so that the flexibility in the choice of the connection side is increased. This means that the user is free to choose the routing of the conductor with regard to the printed circuit board and the side on which the conductor is to be connected to the connection terminal (connection side).

Alternatively or additionally, the cutout can be provided on at least one of the flat sides and extend from the flat side into the outer contour. The cutout can preferably extend to the other flat side, so that the conductor insertion opening is (at least) accessible via the flat side having the cutout.

This can be achieved in particular that the LED circuit board module is connected via one of the flat sides. In particular for the formation of the recess as a through opening, the LED circuit board module can optionally be connected via one of the flat sides, so that the flexibility in the choice of the connection direction is increased. This means that the user is free to choose the routing of the conductor with regard to the circuit board and the side on which the conductor is to be connected to the connection terminal.

According to a further advantageous development of the invention, the cutout can have a conductor insertion area which extends in front of the insertion direction in front of the insertion direction in order to make the conductor insertion opening accessible for fastening the electrical conductor in the insertion direction. The conductor insertion area can extend between the two flat sides as a through opening.

This can in particular achieve that a defined section of the recess is provided for guiding the conductor. This makes it possible, for example, to make the conductor insertion opening in the recess accessible in the insertion direction. In particular in the design of the conductor insertion area as a through opening, the LED circuit board module can optionally be connected via one of the flat sides, so that the flexibility in the choice of the connection direction is increased. This means that the user is free to choose the routing of the conductor with regard to the circuit board and the side on which the conductor is to be connected to the connection terminal.

According to an advantageous development of the invention, the cutout can extend from the side which has the cutout into the outer contour at least to a depth such that the connecting terminal is flush with at least the side each having the cutout. Alternatively or additionally, the cutout can extend from the side which has the cutout into the outer contour at least to a depth such that the connecting terminal is flush with at least one of the sides each having the cutout.

In this way it can be achieved, in particular, that no additional installation space with regard to the outer contour is required by the connecting terminal.

According to a further advantageous development of the invention, the clamping contact can be formed by a contact frame and a spring element held therein. The spring element can be moved in the contact frame at least between a rest position in which the spring element bears (directly) against the contact frame and a clamping position in which the electrical conductor is held in the clamping contact between the spring element and the contact frame.

In this way, it can be achieved in particular that the conductor can be inserted and fastened into the terminal contact without tools. Furthermore, a safe and simple fastening option for the conductor in the terminal contact is provided.

Furthermore, the spring element can be arranged in the contact frame in such a way that it can be moved in a plane of movement which is preferably essentially parallel to the plane of extension and furthermore preferably extends between the flat sides.

This can in particular achieve that the conductor is received and fastened within the recess or within the printed circuit board. This makes it possible to provide the fastening of the conductor within the printed circuit board, so that the installation space available in the recess is used particularly advantageously. In addition, no additional space with respect to the thickness of the printed circuit board is required to provide the movement of the spring element in the contact frame. Rather, the spring element can move within the plane of extension.

The spring element can preferably have a cross section with a U or V shape.

According to an advantageous development of the invention, the connection terminal can furthermore have a contact element which is connected to a Contact section of the circuit board is electrically connected. The contact element can protrude from the connection terminal, in particular project from the connection terminal (wing-like). The contact element can preferably have a cross section with an L or J shape. The contact section can be provided on at least one of the flat sides, preferably at least on the flat side having the recess. Alternatively or additionally, the contact section can be provided integrated in the outer contour in the case of a multilayer printed circuit board.

In this way it can in particular be achieved that the connection terminal is connected to the printed circuit board in a particularly secure and advantageous manner. It also makes it possible to further minimize the installation space required for the electrical connection of the connection terminal to the printed circuit board. Furthermore, the mechanical fastening of the connection terminal in the recess (or the printed circuit board) can be provided with simple means via the electrical contact. This also simplifies assembly and reduces the costs for the manufacture and maintenance of the LED circuit board module.

According to a further advantageous development of the invention, the connection terminal can furthermore have a housing. The housing can have a conductor insertion channel which continues the conductor insertion opening in the insertion direction. The housing can preferably also be provided as an insulating material housing for electrically insulating the connection terminal.

This can in particular ensure that the connection terminal is protected from the environment and is electrically insulated. This can, for example, prevent short circuits or arcing on the circuit board.

According to an advantageous development of the invention, the printed circuit board can have a single-layer structure. One of the flat sides can have electrical conductor tracks, electrical components, such as LEDs and resistors, and / or the aforementioned contact sections. Alternatively or additionally, the circuit board can have a multilayer structure, electrical conductor tracks, components and / or contact sections being provided within the outer contour and / or on at least one of the flat sides.

In particular, it can thereby be achieved that the LED circuit board module can be used for a large number of applications, in each of these applications the installation space required for the connection can be reduced, the flexibility of the connection method increased and the costs for the manufacture and assembly of the circuit board modules reduced .

Another aspect of the present invention further relates to a lighting system which has an LED circuit board module according to the invention described at the outset and a light source, such as an LED.

This makes it possible to provide a lighting system which also has all of the advantages of the LED circuit board module described above.

The lighting system can also have a further component, such as a further (different) LED circuit board module, but preferably the LED circuit board module according to the invention described at the outset. Alternatively or additionally, the lighting system can have an operating device. The respective elements of the lighting system can be electrically coupled to one another via the connection terminal.

This makes it possible, for example, to provide a networked lighting system. Furthermore, it becomes possible to connect the LED circuit board modules to one another in a simple and space-saving manner. Consequently, the invention also provides a particularly space-saving board-to-board connection. With the lighting system according to the invention, it is particularly preferred that the coupling of the respective LED circuit board modules is achieved in the extension plane, so that a board-to-board connection hardly takes up any installation space beyond the circuit boards.

In addition, the lighting system can furthermore have a separate connecting means, such as, for example, an electrical connecting pin or a connecting wire, for the electrical coupling of the LED circuit board module to the further component.

This can be achieved in particular that the connection is effected with conventional and inexpensive means.

• 1 eine schematische Darstellung der Draufsicht eines LED-Leiterplattenmoduls gemäß einer ersten Ausführungsform der Erfindung.
• 2 eine perspektivische Darstellung des LED-Leiterplattenmoduls aus 1.
• 3 eine schematische Darstellung der Rückansicht des LED-Leiterplattenmoduls aus 1.
• 4 eine perspektivische Darstellung des LED-Leiterplattenmoduls aus 3.
• 5 eine perspektivische Darstellung des LED-Leiterplattenmoduls gemäß einer zweiten Ausführungsform der Erfindung.
• 6 eine schematische Darstellung einer Draufsicht eines Leuchtensystems gemäß der Erfindung.
• 7 eine schematische Seitendarstellung des Leuchtensystems aus 6.

Further embodiments and advantages of the present invention are explained using the following exemplary embodiments in conjunction with the figures of the accompanying drawings. Features of the invention are identified by reference symbols. However, from the lack of a reference sign in a figure, it cannot be deduced that the corresponding feature is not shown in this figure. Rather, in such a case, reference is explicitly made to the absence of the feature. Show it:

• 1 is a schematic representation of the top view of an LED circuit board module according to a first embodiment of the invention.
• 2nd a perspective view of the LED circuit board module 1 .
• 3rd a schematic representation of the rear view of the LED circuit board module 1 .
• 4th a perspective view of the LED circuit board module 3rd .
• 5 a perspective view of the LED circuit board module according to a second embodiment of the invention.
• 6 is a schematic representation of a plan view of a lighting system according to the invention.
• 7 a schematic side view of the lighting system 6 .

The 1 to 5 show different views of different embodiments of an LED circuit board module 700 according to the invention.

The 6 and 7 show different views of an embodiment of a lighting system 800 according to the invention.

The LED circuit board module 700 shows one in an extension plane EE extending flat circuit board 200 with two flat sides 210 , 220 on which by a circumferential end face 230 are interconnected. The flat sides 210 , 220 and the front 230 together limit an outer contour of the circuit board 200 . The circuit board 200 with its outer contour is particularly advantageous in 5 shown.

Like from the 4th , 5 and 7 in particular emerges, the flat sides 210 , 220 the circuit board 200 preferably extend in two mutually parallel planes. The two flat sides can be particularly preferred 210 , 220 each extend in a plane that is parallel to the extension plane EE the circuit board 200 is. The circuit board 200 can in plan view of one of the flat sides 210 , 220 polygonal, preferably rectangular. However, this list is not to be regarded as limiting. The circuit board 200 can in plan view of one of the flat sides 210 , 220 be round or have sections that are round and / or polygonal. The face 230 can be formed by circumferential, preferably at least partially in the circumferential direction, preferably rectilinear edge sections, between which the end face 230 extends.

The circuit board 200 can be formed from an electrically insulating material with conductive connections attached to it. The circuit board 200 can have a single-layer (one-sided) structure. Here, only one of the flat sides faces 210 , 220 electrical conductor tracks and electrical components, such as LEDs 610 or resistors 620 on. Such a structure is exemplary in the 7 shown. The circuit board 200 However, it can also be a multilayer (several, possibly double-sided, interconnected printed circuit boards 200 as) have structure, in which case the electrical conductor tracks and components within the outer contour or on at least one of the flat sides 210 , 220 are provided.

The circuit board 200 points on at least one of its sides defining the outer contour, ie on at least one of the group consisting of the two flat sides 210 , 220 and the front 230 , a recess 250 on, which extends into the outer contour. The 1 to 6 show different examples of the PCB 200 with the recess 250 . In the 1 to 4th it is shown, for example, that one of the flat sides 210 , 220 the recess 250 having. The 5 to 7 show examples in the front 230 (and one of the flat sides 210 , 220 ) the recess 250 having. An example in which only the face 230 the recess 250 is not shown in the figures, but is part of the present invention.

The recess 250 can have different shapes in plan view of the side having it, in particular a rectangular, square or polygonal shape. However, this list is not to be regarded as limiting. The circuit board 200 can of course also have several cutouts 250 , for example on different sides of the outer contour. As in the 3rd , 5 and 6 shown, the recess 250 additional slots 256 exhibit. These can be caused, for example, by production, for example by means of milling, punching or etching, or can be provided to facilitate handling or assembly, for example by the recess 250 to be able to press on more easily. In addition, the slots 256 also perform other functions for wiring or cooling. This list is not exhaustive.

The LED circuit board module 700 also has a connection terminal 100 on. The connection terminal 100 has a terminal contact for making electrical contact with at least one electrical conductor 500 with the circuit board 200 on. In addition, the connection terminal 100 a conductor insertion opening 110 for inserting the electrical conductor 500 in a defined direction of insertion HE towards the terminal contact.

The connection terminal 100 is exemplary in the 1 to 6 shown. The connection terminal 100 can be designed as an SMD component ("Surface Mount Device"), which in particular requires less space. Alternatively or in addition, it is also conceivable that the connection terminal 100 is designed as a THT component (through-hole technology).

For the sake of completeness, reference is also made to the EP 3 114 734 A1 Reference, which shows an example of the general mode of operation and a possible structure of a connection terminal known from the prior art.

The direction of insertion HE that in the 1 to 5 is indicated by an arrow with a dash-double-dot line, for example through the conductor insertion opening 110 be defined. It is conceivable, for example, that the direction of insertion HE parallel to the surface normal of (for example with respect to the extension plane EE effective area of the) conductor insertion opening 110 is. In addition, however, it is also conceivable that the direction of insertion HE is determined by the structure or configuration of the terminal contact.

The clamping contact can be formed by a contact frame and a spring element held therein (not shown in the figures). The spring element can be in the contact frame between a rest position, in which the spring element (directly) rests on the contact frame, and a clamping position, in which the electrical conductor 500 is held in the clamping contact between the spring element and the contact frame. For this purpose, the spring element can, for example, be attached in a preloaded manner in the contact frame. Furthermore, it is also conceivable that the spring element can assume further (any) positions between the two aforementioned positions. Furthermore, it is also conceivable that the spring element can be moved beyond the respective aforementioned positions, such as to a release position in which the electrical conductor 500 can be moved in the terminal contact at least along the insertion direction. The spring element can preferably have a U-shaped cross section and be designed as a stamped and bent part. The spring element can preferably be provided such that it can be moved in a movement plane which is essentially parallel to the extension plane EE is. The plane of movement of the spring element can particularly preferably be between the flat sides 210 , 220 extend.

The connection terminal 100 can also be a contact element 120 have, which with a contact portion 240 the circuit board 200 is electrically connected. This is exemplary in the 3rd to 7 shown.

The contact section 240 can on at least one of the flat sides 210 , 220 , preferably at least the recess 250 having side provided. This is exemplary in the 3rd to 8th shown. Alternatively or additionally, however, it is also conceivable that the contact section 240 on the front 230 is provided. Especially when designing the circuit board 200 as a multi-layer circuit board, the contact portion 240 be provided integrated in the outer contour (not shown). For example, the contact element 120 itself in the direction of insertion HE from the connection terminal 100 to a bottom portion of the recess 250 stretch out to the connector 100 with the circuit board 200 over that on the bottom portion of the recess 250 provided contact section 240 to contact. With the multilayer structure, the contact sections 240 also on at least one of the flat sides 210 , 220 be provided.

The contact section 240 the circuit board 200 can, for example, as a copper pad or through one on the circuit board 200 applied conductive paste contacting the conductor tracks in question. The contact section 240 can also be used as a material reduction in the circuit board 200 be formed so as to provide a material protrusion when connected to the contact element 120 the connection terminal 100 to reduce or avoid. The 3rd to 5 illustrate the provision of the contact sections by way of example 240 as a copper pad.

Through the connection between the contact sections 240 and the contact element 120 For example, an electrical connection can be made. This can be achieved, for example, by soldering or gluing. In addition, the connection of the two elements enables mechanical fastening of the connection terminal 100 on / in / inside the circuit board 200 can be achieved. Furthermore, however, it is also conceivable to achieve the mechanical and / or electrical connection by other means, such as by providing latching means on the connection terminal 100 and the circuit board 200 , or as providing the connection terminal 100 as an integral part of the circuit board 200 or fastening the connection terminal 100 in one in the circuit board 200 integrally provided installation space.

The contact element 120 can from the connector 100 protrude. Preferred how for example in the 3rd to 5 shown, the contact element 120 protrude like a wing. Here, the contact element 120 for example, have an L-shaped or J-shaped cross section.

The connection terminal 100 can also be a housing 130 exhibit. The housing can 130 one in the direction of insertion HE the conductor insertion opening 110 have continued conductor insertion channel. The housing 130 is shown as an example in all figures. The housing can preferably 130 be made of a plastic. The housing 130 can preferably be an insulating material housing for electrical insulation of the connection terminal 100 be. Alternatively or additionally, electrical insulation of the connection terminal can be used 100 from the environment (e.g. the LED circuit board module 700 receiving luminaire housing or another fastening reason) can also be achieved by isolating the insulation separately or with the circuit board 200 provided. The housing 130 preferably has a shape that is adapted as possible to the terminal point (corresponding to this), in order in this way to take up the space required by the connecting terminal 100 not to increase.

The connection terminal 100 is in the recess 250 recorded such that the direction of insertion HE essentially parallel to the plane of extension EE is aligned. It is also conceivable that the direction of insertion HE in the extension plane EE runs (and thus as a direction in the plane of extension EE is included). This is exemplary in 5 indicated.

The conductor insertion opening 110 is also within the recess 250 in the direction of insertion HE accessible.

This feature is particularly shown in the 1 to 4th and 6 illustrated examples clearly, which, however, are not to be regarded as limiting, but are only used for explanation. It can be derived, for example, that the conductor insertion opening 110 inside the recess 250 is arranged such that it is in the direction of insertion HE is structurally and functionally accessible. It is thus possible, for example, for the conductor insertion opening 110 inside the recess 250 in the direction of insertion HE the role assigned to her, a leader 500 in the direction of insertion HE to allow access to the terminal contact. This eliminates the need, for example, to provide a terminal access opening for the most part outside of a circuit board, as is known, for example, from the prior art.

Preferably, the connection terminal 100 in the recess 250 be arranged such that the conductor insertion opening 110 between the flat sides 210 , 220 is provided. Preferably, the connection terminal 100 doing so in the recess 250 also be arranged such that the conductor insertion opening 110 in the middle between the flat sides 210 , 220 is provided. Such an embodiment can in particular the exemplary representations of the 2nd , 4th and 5 be removed. It can be seen here, for example, that the connection terminal 100 "In the circuit board 200 lying ”is arranged. In particular the conductor insertion opening 110 is completely between the two flat sides 210 , 220 inside / inside the recess 250 added. In the examples shown in the figures, the connection terminal can thus be achieved in particular 100 only with their wing-like, L-shaped contact elements 120 from the outer contour, especially the flat side 210 , the circuit board 200 protrudes.

The recess 250 can be from the side that has this 210-230 extend into the outer contour at least with a depth that the connection terminal 100 with at least (one) of the recess 250 each facing side (s) is flush. This can in particular 2nd , 4th , 5 and 7 be removed.

The recess 250 can at the front 230 be provided and from the front 230 extend into the outer contour so that the conductor insertion opening 110 over the front 230 in the direction of insertion HE is accessible. This is exemplary in the 5 to 7 shown.

The recess 250 can also on at least one of the flat sides 210 , 220 be provided and from the flat side 210 , 220 into the outer contour and preferably to the other flat side 210 , 220 extend so that the conductor insertion opening 110 at least over the the recess 250 showing flat side 210 , 220 is accessible. This is exemplary in the 1 to 5 shown. The 1 and 2nd could, for example, also illustrate a situation in which the recess 250 not completely between the two flat sides 210 , 220 extends. In this case it is inside the recess 250 in the direction of insertion HE accessible conductor insertion opening 110 at least over the flat side 220 reachable.

The recess 250 can also be a lead insertion area 255 have, which is opposite to the direction of insertion HE in front of the conductor insertion opening 110 extends to the conductor insertion opening 110 for fastening the electrical conductor in the Insertion direction HE to make it accessible. The conductor insertion area can preferably be 255 thereby between the two flat sides 210 , 220 extend as a through opening. The lead entry area 255 is particularly in the 2nd to 4th and 6 clearly visible. Is the lead entry area 255 for example as a continuous recess between the two flat sides 210 , 220 formed, it becomes possible, for example, the electrical conductor 500 optionally on one of the flat sides 210 , 220 to be fixed in the terminal contact. This is particularly evident from the 3rd , 4th and 6 forth.

The recess 250 can preferably have a shape that essentially corresponds to the shape of the connection terminal 100 , preferably with their housing 130 , corresponds.

The recess 250 can be along the direction of insertion HE extends at least with an extension length that in the recess 250 the conductor insertion opening 110 in the direction of insertion HE is accessible. This is for example in 1 clearly visible.

An LED circuit board module can thus, for example, by means of the aforementioned means 700 be provided that a guide of the leader 500 above and below the circuit board 200 allowed so the connector 100 for the leader 500 on both sides (horizontally, along the extension plane EE ) can be reached and recognized by a fitter from both sides. This simplifies the wiring and saves costs. In addition, it can be achieved that the connection provided in this way provides little or no space beyond the flat sides 210 , 220 is demanded.

Another aspect of the present invention relates to a lighting system 800 which is an LED circuit board module 700 as described above and a lamp 610 , such as an LED. Examples of the lighting system 800 are particularly in the 6 and 7 shown.

The lighting system 800 can also be another component, such as another LED circuit board module 700 as described above, or another circuit board module known from the prior art, and / or an operating device. The further component or the further components can be electrically via the connection terminal 100 be coupled together. The lighting system can do this 800 a separate lanyard 520 exhibit. The lanyard 520 can be, for example, an electrical connecting pin or a connecting wire with which the electrical coupling of the LED circuit board module 700 with the other components.

This can be achieved in particular in the case of board-to-board wiring, for example in the 6 and 7 shown, above and below the respective flat sides 210 , 220 no space is taken up by the connection, so the LED lighting system 800 has a reduced space requirement. The recess 250 is preferred for this at least in the end face 230 of the respective LED circuit board modules 700 intended. However, this is by no means to be regarded as limiting, but merely as an example for illustration.

The present invention is not restricted by the exemplary embodiments described above, provided that it is covered by the subject matter of the following claims. In particular, all the features of the exemplary embodiments can be combined with one another and interchangeably and interchangeably.

QUOTES INCLUDE IN THE DESCRIPTION

This list of documents listed by the applicant has been generated automatically and is only included for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Patent literature cited

• EP 3114734 A1 [0005, 0056]

Claims (15)

LED circuit board module (700), having A flat printed circuit board (200) extending in an extension plane (EE) with two flat sides (210, 220) which are connected to one another by a circumferential end face (230) in order to jointly delimit an outer contour of the printed circuit board (200), wherein the circuit board (200) has at least one of the two flat sides (210, 220) and / or the end face (230) a recess (250) which extends into the outer contour; and • A connection terminal (100) with a terminal contact for electrically contacting at least one electrical conductor (500) with the printed circuit board (200) and a conductor insertion opening (110) for inserting the electrical conductor (500) towards the terminal contact in a defined insertion direction (ER ), wherein the connection terminal (100) is received in the recess (250) such that the insertion direction (ER) is aligned substantially parallel to the extension plane (EE) and the conductor insertion opening (110) within the recess (250) in the insertion direction (ER ) is accessible. LED circuit board module (700) according to Claim 1 , wherein the connecting terminal (100) is arranged in the recess (250) such that the conductor insertion opening (110) is provided between the flat sides (210, 220), preferably centrally between the flat sides (210, 220). LED circuit board module (700) according to Claim 1 or 2nd , wherein the recess (250) is provided on the end face (230) and extends from the end face (230) into the outer contour, so that the conductor insertion opening (110) preferably over the end face (230) in the insertion direction (ER) is accessible. LED circuit board module (700) according to one of the preceding claims, wherein the recess (250) is provided on at least one of the flat sides (210, 220) and extends from the flat side (210, 220) into the outer contour and preferably up to extends to the other flat side (210, 220) so that the conductor insertion opening (110) is preferably accessible at least via the flat side (210, 220) having the recess (250). LED circuit board module (700) according to any one of the preceding claims, wherein the recess (250) has a conductor insertion area (255) which extends against the insertion direction (ER) in front of the conductor insertion opening (110) around the conductor insertion opening (110) for fastening to make the electrical conductor accessible in the insertion direction (ER), the conductor insertion area (255) preferably extending between the two flat sides (210, 220) as a through opening. LED circuit board module (700) according to one of the preceding claims, wherein the recess (250) extends from the side having this into the outer contour at least with a depth that the connection terminal (100) with at least (one) of the recess (250) each facing side (s) is flush. LED circuit board module (700) according to any one of the preceding claims, wherein the clamping contact is formed by a contact frame and a spring element held therein, the spring element in the contact frame at least between a rest position in which the spring element (directly) abuts the contact frame, and a clamping position in which the electrical conductor (500) is held in the clamping contact between the spring element and the contact frame. LED circuit board module (700) according to Claim 7 , wherein the spring element is preferably movable in a movement plane which is substantially parallel to the extension plane (EE), preferably the movement plane extends between the flat sides (210, 220). LED circuit board module (700) according to one of the preceding claims, wherein the connection terminal (100) further comprises a contact element (120) which is electrically connected to a contact section (240) of the circuit board (200). LED circuit board module (700) according to Claim 9 , wherein the contact element (120) protrudes from the connection terminal (100), preferably protrudes like a wing, and / or wherein the contact section (240) on at least one of the flat sides (210, 220), preferably at least the side having the recess (250) , or, in the case of a multilayer printed circuit board, is provided integrated in the outer contour. LED circuit board module (700) according to one of the preceding claims, wherein the connection terminal (100) further comprises a housing (130), preferably an insulating housing for electrically insulating the connection terminal (100), the housing (130) in the insertion direction (ER) the conductor insertion opening (110) has a conductor insertion channel. LED circuit board module (700) according to one of the preceding claims, wherein the circuit board (200) has a single-layer structure, wherein one of the flat sides (210, 220) electrical conductor tracks and / or electrical components, such as LEDs (610) and resistors (620 ), and / or the Has contact sections (240), or has a multilayer structure, electrical conductor tracks, components and / or contact sections (240) being provided within the outer contour and / or on at least one of the flat sides (210, 220). Lighting system (800), featuring • an LED circuit board module (700) according to one of the preceding claims, and • an illuminant (610), in particular an LED. Lighting system (800) according to Claim 13 , further comprising a further component, such as a further LED printed circuit board module (700), preferably according to the present invention, or an operating device which are electrically coupled to one another via the connection terminal (100). Luminaire system (800) according to one of the Claims 13 or 14 , further comprising a separate connecting means (520), in particular an electrical connecting pin or a connecting wire, for the electrical coupling of the LED circuit board module (700) to the further component.

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