EP2850705A1

EP2850705A1 - Support rail for holding and supplying power to a plurality of lighting modules, and light strip system with such a support rail

Info

Publication number: EP2850705A1
Application number: EP13722744.3A
Authority: EP
Inventors: Gerald Ladstätter
Original assignee: Zumtobel Lighting GmbH Austria
Current assignee: Zumtobel Lighting GmbH Austria
Priority date: 2012-05-14
Filing date: 2013-05-13
Publication date: 2015-03-25
Anticipated expiration: 2033-05-13
Also published as: CN104272533B; CN104272533A; DE202012101765U1; EP2850705B1; US9829184B2; US20150109772A1; WO2013171148A1

Abstract

The invention relates to a support rail for holding and supplying power to a plurality of lighting modules. The support rail has first conductors (1) for forming a first power supply circuit and second conductors (2) for forming a second power supply circuit. The support rail additionally has a converter unit (3) for electrically coupling the second power supply circuit to the first power supply circuit. The second power supply circuit also has a first coupling element (4) for electrically connecting a first lighting module and a second coupling element (5) for electrically connecting a second lighting module. The result of this design of the second power supply circuit is that a single converter unit is sufficient for converting a voltage for supplying power to the two lighting modules. In this way a particularly cost-effective and compact construction of the support rail becomes possible. In addition, the two lighting modules can be designed in this manner without their own converter or without their own converter unit, and therefore the lighting modules as such can be designed to occupy a particularly small space and with a low weight. Thereby the installation of the lighting modules on the support rail is facilitated.

Description

Mounting rail for mounting and powering several lighting modules, and Lichtbandsvstem with such a mounting rail

The invention relates to a mounting rail for mounting and power supply of several lighting modules. Moreover, the invention relates to a lighting system with such a mounting rail.

From WO 01/91249 AI, a lighting system with a mounting rail is known, which serves for holding and powering several lighting units or lighting modules. In the support rail extending in the longitudinal direction of a Stromleitprofil, which can be electrically connected to the lighting modules. For operation, a standard mains voltage - ie typically 230 V - is applied to the current-carrying profile. Each of the lighting modules has as a luminous means a fluorescent lamp, as well as an electronic ballast for converting the mains voltage to a suitable operation of the respective fluorescent lamp operating voltage.

Recently, lighting technology has increasingly used LED-based light sources (LED: light-emitting diode). An LED can not be connected directly to the mains voltage. Rather, a much lower voltage is required for their operation, which is for example at 3 volts. Light modules with LED light sources therefore basically require a so-called converter unit, which converts the network or supply voltage provided by the light band system or from the DIN rail to operate the relevant LED light source.

From a certain total length of a lighting system with LED lighting modules, it is not possible along the relevant mounting rails only one

Low voltage supply to provide because at a correspondingly low voltage losses in the power lines are too large for this.

From DE 20 2007 002 128 Ul a decorative lamp chain with several lamp bulbs is known. The decorative lamp chain has a plug housing with a conductive plug connection unit, wherein a first cable and a second cable Cable are electrically connected to this plug connection unit. On the other hand, the second cable first leads to a transformer to which the voltage is applied

is transformed down and then to the lamp bulbs. The

Decorative lamp chain is intended to be hung on different objects, such as trees or houses. A mounting rail for holding the

Decorative lamp chain is not provided. In addition, the lamp bulbs are connected in predetermined form with the second cable; Coupling elements for electrical connection of the lamp bulbs does not have the decorative lamp chain. Accordingly, this document gives no indication of a particularly easy mounting rail.

From DE 20 2012 005 588 Ul an LED lamp is known, which has two LED lighting modules, via a connecting element electrically

connected to each other. In the connecting element selection means are arranged, which are electrically connected between a three-phase network and the LEDs. A mounting rail for holding the lighting modules does not have this LED light.

From the two documents US 2002/0114155 AI and US 2009/0147504 AI LED lights with several, connected in series LED lighting modules are known.

Corresponding mounting rails are not provided with these lights.

The invention is based on the object, a corresponding improved

Specify mounting rail; In particular, the support rail should be made particularly inexpensive and allow a particularly easy to handle installation. The mounting rail should also be particularly suitable for LED-based lighting modules. In addition, a corresponding trunking system should be specified.

This object is achieved according to the invention with the objects specified in the independent claims. Particular embodiments of the invention are indicated in the dependent claims.

According to the invention, a mounting rail for holding and powering a plurality of lighting modules is provided, wherein the mounting rail has first lines for forming a first power supply circuit. Furthermore, the Support rail second lines to form a second power supply circuit and a converter unit for electrical coupling of the second

Power supply circuit to the first power supply circuit. In this case, the second power supply circuit has a first coupling element for electrically connecting a first lighting module, and a second coupling element for electrically connecting a second lighting module.

This embodiment of the second power supply circuit makes it possible to achieve that a single converter unit for voltage conversion is sufficient for the power supply of the two lighting modules. As a result, a particularly cost-effective and compact design of the support rail is made possible. In addition, in this way, the two lighting modules each without their own converter or without own converter unit design, so that the lighting modules can be designed as such particularly small-scale and with low weight. As a result, the mounting of the lighting modules is facilitated on the mounting rail.

Furthermore, the first and the second lines and the converter unit can be firmly connected to the rest of the mounting rail. That way is the

Handling for an end user when inserting the light modules in the

Mounting rail particularly easy.

Preferably, the support rail extends along a longitudinal axis and has a first end portion and a second end portion with respect to the longitudinal axis, the first power supply circuit having a first coupling element disposed at the first end portion and a second coupling member disposed at the second end portion End region is arranged. In this way, the first lines of several analogously designed and arranged in a line one behind the other mounting rails easily to a through-wiring

Connect power to the mounting rails.

Preferably, the first coupling element of the second power supply circuit and the second coupling element of the second power supply circuit are each arranged with respect to the longitudinal axis fixed to the rest of the support rail. hereby the handling when mounting the light modules to the mounting rail is particularly simple.

Preferably, the converter unit is configured for the second

Power supply circuit to provide a constant current. This is particularly advantageous when the light modules are light modules with LEDs as light sources.

Preferably, the first coupling element of the second power supply circuit and the second coupling element of the second power supply circuit are connected in series. In this case, a two-pole design of the coupling elements is sufficient, which in turn makes handling easier. In addition, can be ensured by the series circuit, that by the second

Power supply circuit only current flows when the coupling elements of the second power supply circuit - which can basically be said two or even more than two, which are all connected in series - are equipped accordingly with lighting modules. The output-side voltage or the output-side current of the converter unit can therefore be coordinated in advance, so that an end user does not have to worry about this.

Preferably, the support rail has a profile element which is essentially U-shaped in cross-section, with a first section, through which the first U-leg is formed, a second section, through which the second U-leg is formed, and a third section, through which the connecting leg is formed, which connects the two U-legs with each other, wherein the converter unit to the third

Section, on one of the first section and the second section

is arranged opposite side. This design makes it possible to keep the height of the remaining support rail or the profile element relatively small; a

According compact mounting rail has structural advantages, especially if the mounting rail is to be installed, for example in a concrete floor, as in this way the concrete ceiling to prepare for installation less bulky

must be exempted. The first lines and / or the second lines can advantageously be arranged at least for the most part between the first section and the second section. Preferably, the support rail is also designed for mounting and power supply at least a third light-emitting module, wherein the second

Power supply circuit also has at least a third coupling element for electrically connecting the at least one third lighting module and wherein all the coupling elements of the second power supply circuit are arranged equidistantly. As a result, the mounting rail is suitable for lighting modules, which all have the same length. In this way, the assembly for a

End users continue to facilitate.

For this purpose, the support rail is preferably also designed for holding and power supply at least a third light emitting module, wherein the second power supply circuit further comprises at least a third coupling element for electrically connecting the at least one third light emitting module; The design is such that the distance between the first

Coupling element of the second power supply circuit and the second

Clutch element of the second power supply circuit is different from the distance between the second coupling element of the second power supply circuit and the at least one third coupling element of the second power supply circuit. In particular, in this case, the second power supply circuit has a plurality of third coupling elements for the electrical connection of a plurality of third

Lighting modules, wherein the plurality of third coupling elements are arranged equidistantly with each other and each closer to each other than the first

Coupling element and the second coupling element of the second

Power supply circuit. By this design, the support rail can be shortened in different ways, so that a light line can be formed with a certain desired length.

According to a further aspect of the invention, a light band system is provided, which has a support rail according to the invention, and a first light module, which is electrically connected to the first coupling element of the second power supply circuit is connected and a second light emitting module electrically connected to the second

Coupling element of the second power supply circuit is connected.

Preferably, a plurality of lighting modules are mechanically supported on the mounting rail and are electrically connected to the mounting rail in such a way that the lighting modules extend over the entire length of the mounting rail.

Further preferably, the lighting system also has another

Support rail according to the invention, wherein the first lines of the support rail and the first lines of the other support rail are electrically connected together.

The invention is explained in more detail below with reference to exemplary embodiments and with reference to the drawings. 1 shows a schematic sketch of an embodiment of a

support rail according to the invention,

2 is a sketch of a cross section through the mounting rail, Fig. 3 is a sketch to a corresponding longitudinal section,

4 shows a perspective sketch of an end region of a mounting rail according to a variant, and FIGS. 5A and 5B show sketches corresponding to one another to the mounting rail and to an end piece mounting rail.

Fig. 1 shows a very schematic sketch of an embodiment of a support rail according to the invention. The mounting rail is generally elongated and accordingly extends along a longitudinal axis L, so that the mounting rail with respect to the longitudinal axis L has a first end portion 6 and a second end portion 7. Fig. 2 shows a sketch of a cross section through the support rail normal to the longitudinal axis L. Fig. 4 shows - with analogous use of the reference numerals - a perspective sketch of the first end portion 6 of a variant of the support rail. The length of the mounting rail can be for example 2 m, 3 m or 4 m.

The mounting rail is designed for mechanical support and electrical power supply of several lighting modules. In FIG. 2, a corresponding lighting module 20 is indicated by way of example. The lighting modules 20 can be, in particular, LED-based lighting modules, that is to say lighting modules whose light-generating elements-in particular merely-are formed by LEDs 21, here also referred to as "LED lighting module".

A corresponding LED lighting module may have a profile element 25 made of aluminum, so that it is a total of elongated and be designed to be parallel to the mounting rail oriented with the latter mechanically and electrically connected. On the profile element 25, at least one circuit board 22 may be arranged, on which the LEDs 21, along the length of the LED lighting module are arranged.

In addition, the LED lighting module 20 may have a primary optics (not shown in the figures) for the spatial resolution of the light emitted by the LEDs, as well as contact protection, which may be formed for example by the primary optics.

For the purposes of the description, it is assumed that the mounting rail is oriented in such a way that a light output - as shown in FIG. 2 - downwards takes place through the lighting modules 20. Basically, however, any orientation is possible.

If necessary, corresponding directions in this description are to be reinterpreted.

Preferably, the support rail has a first approximation in cross-section U-shaped profile element 100, for example made of aluminum, which has a first portion 101, is formed by one of the two corresponding U-legs, a second portion 102, through which the other U Is formed, and a third portion 103 through which the connecting leg is formed, which connects the two U-legs with each other. In this case, the profile element 100 is aligned such that the two U-legs, starting from the connecting leg down u point. In other words, the U-shaped profile element 100 is oriented open at the bottom.

The design is preferably such that the lighting modules 20 are completely disposed between the two U-legs or between the first portion 101 and the second portion 102 when they are supported as provided on the support rail.

In the variant shown in Fig. 4, the profile element 100 has a slightly different shape than in the example shown in Fig. 2, but is also corresponding in cross-section U-shaped. This will be referred to again below.

As sketched in FIG. 1, the mounting rail has first lines 1 for forming a first power supply circuit.

The support rail is preferably configured to form a light band system with further analogously constructed mounting rails, wherein the support rails are each aligned parallel to the longitudinal axis L, arranged in a line one behind the other and electrically connected to each other. With such a lighting system can be formed in this way a basically arbitrarily long "light line".

For this purpose, the support rail preferably has mechanical connection elements at the two end regions 6, 7, which are designed for the corresponding mechanical connection to a further analogously designed support rail.

The support rail is further preferably configured to form the light band system such that the first lines 1 at both end regions 6, 7 can be easily connected to corresponding first lines of an analogously designed, further support rail. Accordingly, the first power supply circuit advantageously has a first coupling element 8, which is arranged on the first end region 6 and a second coupling element 9, which is arranged on the second end region 7. Preferably, the first coupling element 8 is a socket and the second coupling element 9 is a connector corresponding thereto - or the other way round. FIG. 3 shows a sketch of a longitudinal section around the first end region 6 of the mounting rail. Here, the first coupling element 8 is sketched electrically connected to a corresponding second coupling element 9 'of a further analogously designed mounting rail.

The first lines 1 are advantageously designed for this, with a conventional one

Mains voltage to be connected, so for example with a 230 V power supply.

In a correspondingly formed light band system, the interconnected first lines of the mounting rails then serve to form a through-wiring for conducting the line voltage to the individual mounting rails. The first lines 1 may have, for example, seven individual wires, via which, in addition to the mains voltage, for example, control signals can also be sent.

Furthermore, the support rail - exemplified in Fig. 1 designated - second

Lines 2, which are designed to form a second power supply circuit.

For electrically coupling the second power supply circuit to the first power supply circuit, the mounting rail further comprises a converter unit 3. The converter unit 3 can accordingly the input side with the first

Be connected to the power supply circuit or with the first lines 1 and the output side to the second power supply circuit or with the second

Lines 2. In Fig. 3, the converter unit 3 is sketched only cut. The converter unit 3 is preferably arranged on one of the two end regions 6, 7 of the mounting rail and is electrically connected on the input side to the corresponding coupling element 8, 9 of the first power supply circuit. As shown by way of example in FIGS. 1 and 3, the converter unit 3 can thus be connected to the first Be arranged end 6 and while the input side with the first

Coupling element 8 of the first power supply circuit to be electrically connected.

In principle, two or more converter units can be provided, for example, in the case of a 4 m long mounting rail, two corresponding

Be provided converter units. However, it is advantageous in terms of manufacture and handling, if the mounting rail only has a converter unit. This is well possible in the case of a 2 m long or 3 m long mounting rail.

Preferably, the converter unit 3 is configured to provide a constant current on the output side. If the lighting modules 20 are LED-based lighting modules, it is particularly advantageous if a constant current can be made available by the converter unit 3 for the second power supply circuit.

The second power supply circuit comprises a first coupling element 4 for electrically connecting a first lighting module and a second

Coupling element 5 for electrically connecting a second light-emitting module. It is also possible to provide further corresponding coupling elements for connecting a corresponding number of further lighting modules.

By said design is achieved that a single converter unit is sufficient to operate several lighting modules.

The two coupling elements 4, 5 of the second power supply circuit are preferably sockets. The lighting modules 20 may in this case - as indicated in Figures 2 and 3 - have simple plug 23, with which they can be plugged particularly easy handling in the sockets for electrical connection to the second power supply circuit.

In the aforementioned configuration, the first coupling element 4 and the second coupling element 5 of the second power supply circuit may be connected in series. Accordingly, the coupling elements 4, 5 may be merely bipolar Bushes act. The plug 23 of the lighting modules 20 can therefore be designed simply as a two-pin plug. The preparation of the corresponding compounds is particularly easy to handle in this case. The series connection also ensures that the second

Power supply circuit only current flows when the lighting modules are electrically connected to the coupling elements 4, 5 accordingly. Of course, this also applies in the case that in the second power supply circuit more than two

Coupling elements are arranged, which are all connected in series.

For example, it can be provided that the converter unit 3 on the output side provides a constant current of 350 mA and thereby a

Voltage range of 116 V to 195 V allows. In the series circuit, the voltage then adds up according to the number of LEDs 21 connected.

For example, the LEDs 21 may be 3V high power LEDs.

Alternatively, the converter unit 3 could be designed to provide a constant voltage on the output side, for example in the low-voltage range up to approximately 50 V. However, in this case further electronic components are required for the lighting modules, which are designed for the LEDs set a suitable current. If, for example, a low-voltage voltage of 24 V is made available by the converter unit 3, groups of a maximum of eight 3 V LEDs can be realized in this case. If sixteen such LEDs are desired on one light module, two corresponding groups of eight LEDs each could be closed in parallel. However, this usually results

Brightness differences between the groups.

The converter unit 3 can, for example-as exemplarily illustrated in FIGS. 2 and 3-be arranged within the U-shaped profile element 100, ie between the first section 101 and the second section 102 of the profile element 100. Alternatively, the converter unit 3 - As in the case sketched in Fig. 4 the case - be arranged on the third section 103 and thereby on a first section 101 and the second section 102 opposite side or on top of the third section 103, so to speak "mounted". At this Design can be - in comparison to the sketched in Fig. 2 embodiment - the first portion 101 and the second portion 102 profile element 100 make with less vertical extent h. This is particularly advantageous if the

Support rail to be installed, for example, in a concrete floor, because in such a case, it is sufficient if the preparation of the installation, the reinforcement of the concrete ceiling is only excluded at the point where the converter unit 3 is to be arranged. The remaining portion of the mounting rail can then be arranged below the reinforcement. This is also advantageous from a static point of view. In addition, a correspondingly more compact mounting rail can better withstand mechanical requirements, for example with respect to a concrete pressure or jogger forces.

The first lines 1 and the second lines 2 are-as in the example shown in FIGS. 2 and 3-preferably arranged at least largely between the first section 101 and the second section 102 or below the third section 103.

Preferably, the first coupling element 4 and the second coupling element 5 of the second power supply circuit are each arranged with respect to the longitudinal axis L fixed to the rest of the support rail. In FIG. 1, this is indicated by the points x1 and 2 of an x-axis parallel to the longitudinal axis L. By such a fixed or positionally fixed arrangement of the coupling elements 4, 5, the handling during assembly of the lighting modules 20 is further facilitated. Preferably, the design is such that the locations x1, x2 at which the

Coupling elements 4, 5 are arranged, are matched to the lengths of the lighting modules 20. Advantageously, it is provided that at full

Equipping the mounting rail with lighting modules extend the lighting modules practically over the entire length of the mounting rail away, so that with the lighting modules a continuous light line can be formed. In addition, the support rail and the light modules are preferably designed such that at a

corresponding light band system at an interface between two mounting rails - especially at light output of the respective lighting modules - no visible limit forms. For example, it can be provided that the lighting modules 20 have a length of 1 m each and the support rail is 3 m long, so that the support rail is fully populated with three lighting modules and in this way a light line can be generated, the gap over the entire Length of the mounting rail extends away. In this case, the support rail or the second

Power supply circuit so next to the first and the second coupling element 4, 5 another, analogously designed coupling element 5 ^' on. Practice has shown that end users of corresponding lighting systems usually want to produce corresponding continuous, continuous light lines.

If the three coupling elements 4, 5, 5 ^' are arranged equidistantly, so that for the corresponding three places applies: x2 - xl = x3 - x2, the support rail with

Illuminated modules are fitted, which have all the same length. This makes it easier for an end user to handle the installation continues. In addition, only one type of lighting modules is sufficient in this case. Of course, this advantage always results if all the coupling elements of the second power supply circuit are arranged in a correspondingly equidistant manner, that is to say also in the case of four or even more coupling elements of the second one

Power supply circuit.

The coupling elements 4, 5, 5 'and the converter unit 3 can be factory set ready for operation in the production of the support rail, so that an end user for mounting the support rail only the lighting modules 20 as provided mechanically with the support rail and electrically to the

Coupling elements 4, 5, 5 'must connect. In particular, it is for the

End users do not need to worry about the output side electrical power of the converter unit 3, because - with intended complete assembly with light modules - the converter unit 3 can already be pre-set or factory adjusted or designed accordingly.

If all lighting modules 20 of a continuous-row lighting system have a specific, uniform length, for example I m, the handling is for an end user So it's very simple, because it has to do with a few different types of parts. However, in this case, it is correspondingly limited with respect to the total length of the light line to be formed. In order to allow an end user more freedom in this regard, a variant of the support rail is provided, here referred to as "tail support rail", as it is suitable as an end support rail of a lighting system.

This variant or the end piece mounting rail is outlined in FIG. 5B. For comparison, in Fig. 5A, the support rail according to the former

Embodiment outlined in a corresponding manner. The reference numbers are again used analogously.

The tail rail is compared to the former

Embodiment also designed for mounting and power supply at least a third light emitting module. For this purpose, the second power supply circuit furthermore has at least one third coupling element 11 for the electrical connection of the at least one third lighting module. The design is such that the distance between the first coupling element 4 and the second

Coupling element 5 of the second power supply circuit - for example, 1 m - from the distance between the second coupling element 5 and the at least one third coupling element 11 of the second power supply circuit

different. Accordingly, the at least one third lighting module differs in its length from the first lighting module.

In the embodiment of the tail rail shown here, the second power supply circuit has a plurality of third coupling elements 11, wherein the plurality of third coupling elements 11 are arranged equidistantly with each other and are each arranged closer to each other than the first coupling element 4 and the second coupling element 5 of the second power supply circuit. For example, the distances between the third coupling elements 11 may each be 10 cm, wherein advantageously ten third coupling elements 11 are arranged with respect to the second coupling element 5 of the second power supply circuit on the first coupling element 4 of the second power supply circuit are arranged opposite side. That of the third coupling elements 11 which is closest to the second coupling element 5 is preferably also 10 cm away from the latter. In other words, the ten third coupling elements 11 are arranged equidistantly on the "last meter" of the end-piece mounting rail. Accordingly, the at least one third luminous module preferably has a length of 10 cm Electronics be designed and can therefore be designed particularly cost-effective. In addition, they can be designed to be particularly short because they do not need a converter unit.

To form a line of light of a particular desired length, the end user may position the tail support rail between any two of the third

Simply shorten the coupling elements 11 or between the second coupling element 5 and the nearest of the third coupling elements 1 1, for example by sawing.

In this case, the second leads 2 are simply electrically connected to one another at the sawn-off end, for example with a clamp so as to close the second power supply circuit again.

In the case of the end piece mounting rail, the first power supply circuit only has to have a coupling element at that end area which is provided for connection to a further mounting rail, that is to say at the first end area 6 in the case of the end piece mounting rail shown in FIG. 5B.

On the support rail, which is located at the other end of the lighting system, the supply of the mains voltage over the corresponding free

Coupling element of the first power supply circuit done.

Due to the possibility of being able to form the length of the light line with the appropriate accuracy, ie, for example, to 10 cm, the end user can adapt the light band system particularly well to on-site conditions. For example, the line of light on the ceiling of a room can be designed to extend from one wall to "all the way" to the opposite wall.

The end user of the mounting rail or the lighting system must therefore connect mechanically and electrically with each other for mounting only the mounting rails and insert the lighting modules. Further planning work or

Considerations are not required for him, since the lighting system is designed so that a consistently sequential arrangement of lighting modules can be done without having to check whether the provided

Supply voltages through the converter units of the mounting rails

is appropriate or sufficient. The assembly is thus particularly easy to handle possible.

Claims

claims

Mounting rail for mounting and power supply of several lighting modules, comprising

- First lines (1) for forming a first power supply circuit, characterized by

- Second lines (2) for forming a second power supply circuit and

- A converter unit (3) for the electrical coupling of the second

Power supply circuit to the first power supply circuit,

wherein the second power supply circuit, a first coupling element (4) for electrically connecting a first lighting module and a second

Coupling element (5) for electrically connecting a second

Having light module.

Mounting rail according to claim 1,

wherein the mounting rail extends along a longitudinal axis (L) and with respect to the longitudinal axis (L) has a first end portion (6) and a second

In this case, the first power supply circuit has a first coupling element (8) which is arranged on the first end region (6) and a second coupling element (9) which is arranged on the second end region (7).

Mounting rail according to claim 2,

in which the first coupling element (4) of the second power supply circuit and the second coupling element (5) of the second power supply circuit are each arranged stationary with respect to the longitudinal axis (L) on the remaining support rail.

Mounting rail according to one of the preceding claims,

in which the converter unit (3) is designed for the second

Power supply circuit to provide a constant current. Mounting rail according to one of the preceding claims,

in which the first coupling element (4) of the second power supply circuit and the second coupling element (5) of the second power supply circuit are connected in series.

Mounting rail according to one of the preceding claims,

comprising a profile element (10) which is substantially U-shaped in cross-section and has a first section (101) through which the first U-leg is formed, a second section (102) through which the second U-leg is formed and a third section Section (103) through which the connecting leg is formed, which connects the two U-legs,

wherein the converter unit (3) is disposed on the third portion (103), on a side opposite to the first portion (101) and the second portion (102).

Mounting rail according to claim 6,

in which the first lines (1) and / or the second lines (2) are arranged at least for the most part between the first section (101) and the second section (102).

Mounting rail according to one of the preceding claims,

which is also designed for holding and supplying power to at least one third lighting module and in which the second power supply circuit also has at least one third coupling element (5 ') for electrically connecting the at least one third lighting module,

wherein all coupling elements (4, 5, 5 ^' ) of the second power supply circuit are arranged equidistantly.

Mounting rail according to one of claims 1 to 7,

which is furthermore designed for holding and supplying power to at least one third lighting module and in which the second power supply circuit also has at least one third coupling element (11) for electrically connecting the at least one third lighting module,

wherein the distance between the first coupling element (4) of the second Power supply circuit and the second coupling element (5) of the second power supply circuit of the distance between the second

Coupling element (5) of the second power supply circuit and the at least one third coupling element (11) of the second

Power supply circuit is different.

Mounting rail according to claim 9,

wherein the second power supply circuit has a plurality of third coupling elements (11) for electrically connecting a plurality of third lighting modules,

wherein the plurality of third coupling elements (11) are arranged equidistantly with each other and thereby each closer to each other than the first

Coupling element (4) and the second coupling element (5) of the second power supply circuit.

Lightbar system, comprising

a support rail according to one of the preceding claims,

- A first light emitting module, which is electrically connected to the first coupling element (4) of the second power supply circuit and

- A second light emitting module, which is electrically connected to the second coupling element (5) of the second power supply circuit.

Lighting system according to claim 11,

in which a plurality of lighting modules are mechanically supported on the mounting rail and are electrically connected to the mounting rail in such a way that the lighting modules extend over the entire length of the mounting rail.

Lighting system according to claim 11 or 12,

still having

- Another support rail according to one of the preceding claims 1 to 10, wherein the first lines (1) of the support rail and the first lines of the further support rail are electrically connected together.