EP2626954A1 - Connection unit for a light strip - Google Patents

Abstract

The unit has first and second plug connectors (15, 16) including an insertion section (20) for a through-wiring (13), where the insertion section is arranged in a plane. A plug retainer (23) of the first plug connector is designed plug-complementary to a plug projection (22) of the second plug connector. Lamps are arranged together. A feeder for a supply line for supplying voltage to one of the lamps. One of the first and second plug connectors forms a slot (24) for a third plug connector, which couples the supply line with the unit.

Description

The invention relates to a connection unit for a light band, which is formed by at least two adjacently arranged lamps, with a first connector having an insertion section for a through-wiring and a plug-in extension, wherein the insertion section is arranged in a first plane, and with a second connector which has an insertion section for a through-wiring and a plug-in receptacle, wherein the insertion section is arranged in a first plane and the plug-in receptacle of the second connector is plug-complementary to the plug-in extension of the first connector, and with an outlet for a supply line, by means of which one of the lamps is supplied with voltage.

A strip of light is usually understood to mean lighting units which, as a rule - but not necessarily - illuminate large-area premises, in particular open-plan offices, supermarkets and large-scale and retail properties. As a rule, they comprise a receiving element designated here as a mounting profile or mounting rail, which can be designed, for example, as a U-profile.

The mounting profile usually carries connecting cables, which are designed via several interconnected profiles or over several interconnected individual lights in the form of a through-wiring. Individually arranged within the mounting profile lights are each supplied via a separate supply line, which is coupled to the through-wiring. In this case, not only an electrical voltage is fed via the supply line, in addition it is possible to conduct control signals to the lighting unit.

The individual connection lines which form the through-wiring and which are assigned to the mounting profiles or to the luminaires are coupled to one another via plug connectors. There are different solutions. Exemplary will first on the EP 1681747 B1 referenced, which shows a arranged on the mounting profile connector. In the present case, the latched in the mounting profile connector is additionally provided with a multi-pole terminal, by means of which individual wires of a supply line can be contacted with the through-wiring. In the EP 1681747 B1 This terminal is designed as a separate component, which is in addition to the connector of the through-wiring to attach to the mounting rail and to contact with the connector. While the connector is visibly arranged on the mounting rail, the terminal is covered by a lamp arranged on the mounting rail.

Out DE 10 2007 018 399 B4 It is known to attach to a ribbon conductor, which forms the through-wiring, a contacting device for individual wires of the supply line, which is in principle independent of the connectors for coupling individual portions of the through-wiring available.

Contact arms of this contacting device engage over the individual cores of the ribbon conductor and contain insulation displacement contacts. The insulation displacement contacts are in turn provided with connection terminals for cores of a supply line. The placement of the contacting device on the ribbon conductor establishes an electrical connection to the individual wires of the through-wiring by means of the insulation displacement contacts. Via the terminals for the supply line, the connection of the luminaire and a phase selection is realized.

The cited prior art is quite common in popular light bands and fulfills the purpose imposed on it. However, the assembly of the individual components of the known connection units and the connection of the supply lines is associated with a certain effort. In addition, individual parts of the connection units are usually arranged visible on the mounting rail. In the common lighting systems with mounting rails of several meters in length, including corresponding lighting units, which are usually provided with double-capped fluorescent tubes, these disadvantages are acceptable, or so far not significant or even noticed.

However, efforts are underway to provide easier-to-handle lightbar systems using smaller modules and novel bulbs. For these, the known connection units are less suitable, so that it is an object of the invention to provide a novel connection unit for light bands.

The object is achieved by a connection unit with the features of claim 1, in particular with the characterizing features, according to which one of the connectors forms a slot for a third connector, by means of which the supply line to the connection unit can be coupled.

The main advantage of the invention lies in particular in the slot for a third connector. This makes it possible to connect multi-core supply lines for connecting the individual luminaires of the light strip with a handle with the through-wiring. This has considerable mounting advantages over the connection of individual strands to cable clamps. In this case, the third connector is the same number of poles to the first and second connector of Connection unit executed, which is also new and advantageous over the aforementioned prior art, since there usually only those poles are tapped, which are necessary for the operation of the individual light. The third connector according to the invention is therefore not only suitable for supplying the luminaire, but can also be used for feeding voltage and / or control signals and the protective conductor connection in the through-wiring. Again, the connection between the through-wiring and a feed line can be made with a handle.

In general, it is provided that the first and the second connector each form a slot for the third connector.

In particular, in the case of the flat-band conductors used generally for through-wiring, the connection unit is characterized in that the slot and the third connector has a plurality of plug contacts arranged side by side and the slots of complementary first and second connectors, each with a first and second Steckkodierung are provided, and that the third connector only forms a complementary to the first and second Steckkodierung third Steckkodierung.

In this specific embodiment, it is first advantageous that such a polarity reversal protection is formed, which clearly identifies both the first, as well as the second connector, with only a third connector both reverse polarity in the slot of the first and reverse polarity in the slot of the second Connector can be used. It should be noted that on the side of the first to third connector in each case at least one coding means is provided. Based on the above-mentioned prior art also solves a connection unit according to claim 4, the object of the invention and is characterized essentially by the fact that at least one of the plug contacts is provided with a further contact portion which is electrically connected to the through-wiring terminal and the connection of a Supply line for at least one of the lights is used.

The advantage of the plug contact defined in claim 4 is to be seen in that he deviating from plug contacts from the prior art has an additional contact portion to which another plug contact can be attached.

It is conceivable that the further contact portion is formed as a plug-in extension or as a plug-in receptacle for connecting a further plug-in contact.

Furthermore, it is advantageous if both plug contacts have a further contact portion and the contact portions of both plug contacts are identical.

For manufacturing reasons, care was taken to ensure that the through-wiring connection terminal, the plug-in extension or the plug-in receptacle and the further contact section form a one-piece plug-in contact formed in the same material-cohesive manner.

It is provided that the through-wiring terminal on its side facing away from one Adereinführöffnung side for the purpose of protective conductor connection forms a protective conductor terminal, which can be contacted with a lamp housing.

Finally, a particular embodiment is characterized in that the plug contact is formed as a stamped and bent part of a suitable, electrically conductive material.

Figur 1:

Eine schematische Explosionsdarstellung eines Lichtbandabschnittes, in welchem der Gegenstand der Erfindung Verwendung findet,

Figur 2:

Darstellung des ersten und zweiten Steckverbinders nebst Leiterabschnitt einer Durchgangsverdrahtung in Seitenansicht,

Figur 3:

Gegenstand gemäß Fig. 2 in perspektivischer Ansicht,

Figur 4:

die Darstellung gemäß Fig. 2 inklusive drittem Steckverbinder in Vormontagestellung,

Figur 5:

die Darstellung gemäß Fig. 4 mit gestecktem dritten Steckverbinder,

Figur 6:

Darstellung eines ersten und zweiten Steckverbinders im gesteckten Zustand,

Figur 7:

die Darstellung gemäß Fig. 6 unter zusätzlicher Belegung des Steckplatzes mit dem dritten Steckverbinder,

Figur 8a:

Darstellung der einzelnen Steckkontakte der Steckverbinder zu 1 bis 3 in Vormontagestellung und Seitenansicht in einer ersten Ausführungsform,

Figur 8b:

die Steckkontakte gemäß Fig. 8a in einer zweiten Ausführungsform,

Figur 9:

die Steckkontakte gemäß Fig. 8a und 8b im gesteckten Zustand,

Figur 10:

eine perspektivische Ansicht auf die Steckkontaktpakete der Steckverbinder zu 1 bis 3, teilweise in Vormontagestellung,

Figur 11:

die Steckverbinderpakete gemäß Fig. 10 im gesteckten Zustand,

Figur 12:

eine Aufsicht auf den ersten erfindungsgemäßen Steckverbinder,

Figur 13:

eine Schnittansicht gemäß Schnittlinie A - A in Fig. 12 mit Steckkontakt,

Figur 14.

die Ansicht gemäß Fig. 13 ohne Steckkontakt,

Figur 15:

eine Aufsicht auf den zweiten erfindungsgemäßen Steckverbinder,

Figur 16:

eine Schnittansicht gemäß Schnittlinie B - B in Fig. 15 mit Steckkontakt,

Figur 17:

die Ansicht gemäß Figur 16 ohne Steckkontakt,

Figur 18:

eine Aufsicht auf den dritten Steckverbinder,

Figur 19:

eine Seitenansicht des dritten Steckverbinders gemäß Fig. 18,

Figur 20:

eine Ansicht von unten auf den dritten Steckverbinder gemäß Fig. 18.

Incidentally, further advantages of the invention will become apparent from the following description of an embodiment. Show it:

FIG. 1:

A schematic exploded view of a light band section, in which the object of the invention is used,

FIG. 2:

Representation of the first and second connector together with conductor section of a through-wiring in side view,

FIG. 3:

Subject according to Fig. 2 in perspective view,

FIG. 4:

the representation according to Fig. 2 including third connector in pre-assembly position,

FIG. 5:

the representation according to Fig. 4 with plugged third connector,

FIG. 6:

Representation of a first and second connector in the inserted state,

FIG. 7:

the representation according to Fig. 6 with additional assignment of the slot with the third connector,

FIG. 8a:

Representation of the individual plug contacts of the plug connectors 1 to 3 in the pre-assembly position and side view in a first embodiment,

FIG. 8b:

the plug contacts according to Fig. 8a in a second embodiment,

FIG. 9:

the plug contacts according to Fig. 8a and 8b when plugged in,

FIG. 10:

a perspective view of the plug contact packages of the connectors to 1 to 3, partially in pre-assembly,

FIG. 11:

the connector packages according to Fig. 10 when plugged in,

FIG. 12:

a plan view of the first connector according to the invention,

FIG. 13:

a sectional view along section line A - A in Fig. 12 with plug contact,

FIG. 14.

the view according to Fig. 13 without plug contact,

FIG. 15:

a plan view of the second connector according to the invention,

FIG. 16:

a sectional view along section line B - B in Fig. 15 with plug contact,

FIG. 17:

the view according to FIG. 16 without plug contact,

FIG. 18:

a plan view of the third connector,

FIG. 19:

a side view of the third connector according to Fig. 18 .

FIG. 20:

a bottom view of the third connector according to Fig. 18 ,

In the figures, a light band is denoted overall by the reference numeral 10.

In Fig. 1 a partial section of the light band 10 is shown schematically in exploded view. This light band section 10 initially comprises a mounting profile 11, which is also referred to as a mounting rail. This is usually a U-profile open to a luminaire 12, which is fastened to a ceiling. A light strip 10 of the prior art comprises a plurality of light band sections according to Fig. 1 , wherein a light band section according to Fig. 1 can hold several lights 12.

The support rail 11 receives the other essential components of the light band. These include, in addition to the already mentioned lamp 12, the through-wiring 13, which usually consists of individual sections. Here, such a through-wiring portion is formed by a conductor 14, in particular a ribbon conductor, which is provided at its ends with a first connector 15 and a second connector 16. Plug-complementary connectors (not shown) of a further light band section are attached to the first or second plug connectors 15, 16 of the through-wiring section shown, and thus the through-wiring 13 is formed. Supply lines 17 access the electricity required for the operation of the luminaire 12, the protective conductor connection and any control signals from the through-wiring 13 and lead them to the luminaire 12. Infeed lines 18 supply the through-wiring with electricity and control signals and the protective conductor connection. The Feed line 18 according to the invention may be identical to the supply line 17 of the invention.

Rooflights 10 of recent design are made of several of the FIG. 1 composed of individual modules shown schematically. Rooflights 10 of the prior art have mounting rails 11, which generally receive a plurality of light-emitting elements 12.

In FIG. 2 a section of a through-wiring 13 is shown in its individual parts in side view. Between the first connector 15 and the second connector 16 is - unassembled - the ribbon conductor 14 settled. Whose stripped ends 19 are to be inserted for insertion into insertion sections 20. For this purpose, the insertion sections 20 form individual insertion openings (see FIG. Fig. 3 ), which receive the stripped ends 19 of the ribbon conductor 14 and later to be described plug contacts 40, 50, 60, 70 perform.

The first connector 15 forms on its side opposite the insertion section 20 side of a plug-in extension 22, the second connector 16 has instead a plug receptacle 23. Plug extension 22 and plug receptacle 23 are complementary to each other plug-shaped, so that the plug-in extension 22 can dip into the socket 23, to make a connection between the two connectors 15 and 16. Each of the connectors 15, 16 forms a slot 24 for a third connector 26. This is arranged in the present embodiment on the same side of the connector 15 and 16, which also forms the insertion section 20 for the conductor 14. Locking organs 25 - here in the form of locking arms - are used to secure the later to be described third connector 26th

As can be seen from the perspective view of the portion of the through-wiring 13, the plug-in extension 22 forms individual, approximately tubular reception spaces, which correspond in number to the number of individual cores of the flat conductor 14. The plug-in receptacle 23 is also made complementary in this regard.

Fig. 4 again shows the portion of the through-wiring 13, here, however, with mounted ribbon conductor 14. Shown is also the third connector 26 - is provided for insertion into the slot 24 of the second connector 16 - located in a pre-assembly and together with the partial supply conductor 28th the supply line 17 forms.

Out Fig. 4 It can also be seen that both the first and the second connector 15, 16 can be divided into three functional levels. The first level E1 is used to connect the ribbon conductor 14 and includes primarily the insertion section 20 with its Adereinführöffnungen 21. In a second plane E2 of the slot 24 is arranged for the third connector 26, whereas finally in a third plane E3 of the plug extension 22 and ., The plug 23 are located.

Fig. 5 corresponds essentially to the representation of the Fig. 4 , only that the third connector 26 is seated in its slot 24 of the second connector 16.

Finally it will open Fig. 6 directed. This shows the first and second connectors 15, 16 in the inserted state. The plug-in extension 22 is immersed in the plug-in receptacle 23, whereby in two connectors 15, 16 located plug contacts 40, 50, 60, 70 are in electrical connection.

Fig. 7 shows the representation of FIG. 6 , supplemented with the third connector 26. In the slots 24 of the connector 15, 16 a third connector 26 is inserted in each case. The locking member 25 of the respective first and second connector 15, 16 engages over a latching hook 29 to anchor the third connector 26 in the slot 24. For clarity, the insertion sections 20 are unoccupied and the associated ribbon conductor 14 or supply conductor 28 is not shown.

The in Fig. 7 shown plug state results, for example, in the transition from a light band module to the next. There, the connectors 15, 16, 26 of the individual through-wiring sections for supplying the individual light band modules with electricity and control signals and protective conductor connection in the in Fig. 7 coupled manner shown.

At the same time in the case shown here concretely, in each case a supply line 17 or a feed line 18 is inserted by means of the third plug connector 26, from which electricity and control signals for through-wiring 13 or from the through-wiring 13 are led to a respective lamp 12.

The first connector 15 and the second connector 16 has a plurality of contact chambers 30, within which one of the number of poles of the ribbon conductor 14 corresponding number of plug contacts 40, 50, 60, 70 is arranged, which will be discussed below.

In the Fig. 8a and 8b These plug contacts 40, 50, 60, 70 are shown in detail. Here are the paper in terms of the Fig. 8a and 8b Left-side plug contacts associated with the second connector 16 and the right-side plug contacts the first Connector 15. The terms "right-sided" and "left-sided" refer to the auxiliary line H1 in the FIGS. 8a and 8b ,

In the Fig. 8a On the left side of the auxiliary line H1, the line plug 40 of the second plug contact 16 is initially shown. It first comprises a through-wiring connection terminal 41, a plug-in extension 42 and a further contact section 43, which serves to connect a supply plug contact 80. The through-wiring connection terminal 41 has on its side facing away from the plug-in extension 42 an insertion opening 44, through which the stripped end 19 of a core is inserted and reaches the region of a clamping leg 45. The clamping leg 45 holds the wire in electrical contact in the through-wiring terminal 41.

In principle, similar to the right-side plug contact 50 of the first connector 15 is constructed similarly. This is referred to below as a line socket 50.

The line socket 50 also has a through-wiring terminal 51 and a further contact portion 53. In contrast to the line connector 40, the line socket 50 is provided with a plug-in receptacle 52 instead of the plug-in extension 42, which is plug-complementary to the plug-in extension 42 of the line plug 40. Like, for example Fig. 11 it can be seen, the plug-in receptacle 52 is concretely formed by two mutually braced clamping legs which receive the plug-in extension 42 between them. Also, the through-wiring terminal 51 of the line socket 50 has a clamping leg 55, which is arranged adjacent to a Adereinführöffnung 54. The Adereinführöffnung 54 is disposed opposite the plug receptacle 52. As already stated for the line plug 40, holds the clamping leg 55 a wire electrically contacting the line socket 50th

In the specific embodiment, each first connector 15 six juxtaposed line sockets 50 in each case a contact chamber 30. Each second connector 16 has corresponding in its contact chambers 30 associated line connector 40. In this case, line plug 40 and line socket 50 not only serve the power supply, but can also be used for the connection of wires, via which control signals are fed.

In addition to the aforementioned plug contacts 40, 50, specially designed plug contacts 60, 70 are provided for a protective conductor. For this purpose, a protective conductor plug 60 is provided on the side of the second connector 16, with through-wiring connection terminal 61 and plug-in extension 62. The through-wiring connection terminal 61 has an insertion opening 64 and a clamping leg 65. The functionality of the aforementioned components corresponds to that which has been explained to the line connector 40. Finally, the protective conductor plug 60 has a further contact section 63. The latter is contacted by a protective conductor plug contact 90 of the supply line 17 or feed line 18.

In principle the same way, the protective conductor plug receptacle 70 of the first plug-in contact 15 is constructed. This also has a through-wiring terminal 71 with Adereinführöffnung 74 and clamping legs 75. In addition, a further contact portion 73 and a plug-in extension 62 plug-shaped receptacle 72 is provided.

Protective conductor plug 60 and protective conductor plug receptacle 70 differ from the line plug 40 and line plug socket 50 substantially in their dimensions. As can be seen from the auxiliary lines H1 to H7, the plug-in extensions 62, 63 and 73 or the plug-in receptacle 72 are made longer with respect to their counterparts 42, 43, 52 and 53. When mating first and second connectors 15, 16, plug-in extension 62 and plug-in receptacle 72 rush in front of the plug-in extension 42 or the plug-in receptacle 52, so that the protective conductor is contacted in front of the remaining conductors.

The same applies to the plug-in receptacles of the protective conductor plug contacts 90 in comparison to the supply plug contacts 80. This ensures that the protective conductors are always contacted before the other conductors.

Then reference is made to a previously unmentioned component of the protective conductor plug 60. This is a protective conductor terminal 66 which is aligned with the clamping leg 65 of the protective conductor plug 60 aligned, but in the plane of the through-wiring terminal 61 is arranged. When mounting the second connector 16 to a support rail 11, the protective conductor terminal 66 is an electrical connection with the support rail 11 itself.

Fig. 9 shows the plug contacts 40, 50 and 80 in the mounted position. For illustrative illustration, individual wires of the through-wiring conductor 14 and the supply line 17 and feed line 18 are shown. In the Fig. 10 and 11 the plug contacts 40, 50, 60, 70, 80 and 90 are shown in a perspective view and arranged in packets such as they einliegen in the contact chamber of the first to third connectors. Out Fig. 10 In particular, it can be seen that the protective conductor plug contacts 90 the Supply plug contacts 80 lead. In addition, in the Fig. 11 illustrated how the individual plug contacts 40, 50, 60, 70, 80 and 90 contact each other when first and second connectors 15, 16 are assembled with attached third connectors 26.

According to the invention, the plug contacts 40, 50, 60, 70, 80 and 90 are formed as a stamped and bent part and can therefore be rational and easy to manufacture.

Fig. 12 shows a plan view of the first connector 15. The plug-in extension 22 consists of several individual tabs 31, each forming a cavity for a plug-in receptacle 52 (s. Fig. 13 ).

In Fig. 13 is the first connector 15 according to section line AA in Fig. 12 cut so that insight into the contact chamber 30 and there einitzende line socket 50 can be taken. With regard to the individual components of the line socket 50, reference is made to the preceding description of the same.

Fig. 14 shows the view of Fig. 13 omitting the line socket 50, so that insight into the contact chamber 30 can be taken. Attention should be drawn in particular to the conically tapering insertion opening of the insertion section 20, which feeds the stripped strand of the through-wiring connection terminal 51.

Fig. 15 shows a plan view of the second connector 16. The plug-in receptacle 23 has a continuous, continuous wall, within which the plug-in extensions 42 of the line plug 40 einliegen. With regard to the individual components of the cable connector 40, as in the sectional view along section line BB in Fig. 15 in the contact chamber 30 in Fig. 16 Reference is made to the foregoing.

The representation of the Fig. 17 which of those Fig. 16 , but without line connector 40 corresponds, one takes an insight into the contact chamber 30 of the second connector 16. Again, the tapered insertion of the insertion section 20 to refer, which supplies the single wire of the single conductor 14 of the through-wiring terminal 41.

The Fig. 18 to 20 show the third connector 26 in top view, side view and bottom view. The slots 24 of the first and second connectors 15, 16 each have a coding unit which corresponds to a corresponding coding unit of the third connector 26. This ensures that the third connector 26, regardless of whether it is to be inserted into the slot 24 of the first connector 15 or into the slot 24 of the second connector 16, can only be inserted in the correct polar alignment.

The special feature of the Steckkodierung of the first, second and third connectors 15, 16, 26 is to see that a simple rotation of the third connector directed transversely to the conductor insertion direction X, ie transversely to the arranged in the connector 26 contacts 80, 90 transverse axis Q is to be pivoted by 180 degrees to be plug and polarity reversible to the respective first and second connectors 15, 16 aligned.

In order to make this clear to the user or a fitter, the third connector 26 has, in the region of its latching hook 29 present on the top and bottom side, another visible, tactile and mechanically acting assembly coding 32.

On the part of the third connector 26, the mounting coding 32 is formed by Kodierrippen 33, which are applied on one side as a roof or arrow-like support and on the opposite side of the third connector 26 as a semi-circular support on the surface, as in particular from the FIGS. 18 and 20 is apparent.

The first connector 15 forms at its locking member 25 a coding nose 34 (s. Fig. 12 ) and in selbiger way a coding nose 34 is formed on the side of the second connector 16 (s. Fig. 15 ). How out Fig. 12 and Fig. 15 it can be seen, the one coding nose 34 of the first connector 15 is arrow-shaped, where against the coding nose 34 of the second connector 16 has an approximately semicircular edge. The coding tabs 34 from the first connector or second connector 16 are so far formed to the respectively associated coding ribs 33 on the side of the third connector 26 conforming to form. This shape congruence ensures both a visible and a tactile and finally also - at least to a limited extent - a mechanical plug-in coding, which is additionally or alternatively present to the coding of the actual plug-in elements by the plug connectors 15, 16, 26.

The essential advantage of the connection unit according to the invention lies in its modularity with a small number of different components and in the given by the connector 15, 16, 26 ease of installation.

LIST OF REFERENCE NUMBERS

10

trunking

11

Mounting profile / mounting rail

12

lamp

13

Through wiring

14

ladder

15

first connector

16

second connector

17

supply line

18

feeder

19

stripped ends of 14

20

insertion

21

Adereinführöffnung

22

Plug extension

23

plug-in receptacle

24

slot

25

detent member

26

third connector

27

housing spaces

28

supply lines

29

Latching hook of 26

30

Contact chamber of 15 or 16

31

plug nose

32

assembly coding

33

coding ribs

34

keying

40

cable plug

41

By wiring terminal

42

Plug extension

43

further contact section

44

Adereinführöffnung

45

clamping leg

50

Line socket

51

By wiring terminal

52

plug-in receptacle

53

further contact section

54

Adereinführöffnung

55

clamping leg

60

Protective conductor connector

61

By wiring terminal

62

Plug extension

63

further contact section

64

Adereinführöffnung

65

clamping leg

66

Ground terminal block

70

Protective conductor plug receptacle

71

By wiring terminal

72

plug-in receptacle

73

further contact section

74

Adereinführöffnung

75

clamping leg

80

Supply plug contact

90

Protective conductor plug contact

E1

first floor

E2

second level

E3

Third level

H1

ledger line

H2

ledger line

H3

ledger line

H4

ledger line

H5

ledger line

H6

ledger line

H7

ledger line

X

Head insertion direction

Q

transverse axis

Claims (9)

Connection unit for a light band (10) which is formed by at least two mutually adjoining lights (12),
a first connector (15) having an insertion section (20) for a through-wiring (13) and a plug-in extension (22), wherein the insertion section (20) in a first plane (E1) is arranged, and
with a second connector (16) having an insertion section (20) for a through - wiring (13) and a plug receptacle (23), wherein the insertion section (20) is arranged in a first plane (E1) and the plug receptacle (23) of second connector (16) to the plug-in extension (22) of the first connector (15) is formed complementary to the plug, and
with an outlet for a supply line (17), by means of which one of the lamps (12) is supplied with voltage, characterized in that one of the plug connectors (15, 16) forms a slot (24) for a third connector (26) whose supply line (17) can be coupled to the connection unit. Terminal unit according to claim 1, characterized in that the first and the second connector (15,16) each form a slot (24) for the third connector (26). Terminal unit according to one of the preceding claims, characterized in that the slot (24) and the third connector (26) has a plurality of juxtaposed plug contacts (40,50,60,70,80,90) and the slots (24) of mutually complementarily formed first and second connectors (15,16) are each provided with a first and second Steckkodierung and that the third connector (26) forms only one complementary to the first and second Steckkodierung third Steckkodierung. Connection unit for a light band (10) which is formed by at least two mutually adjoining lights (12),
with a first plug contact (40, 60) which forms a through-wiring connection terminal (41, 61) in a first plane (E1) and provides it with a plug-in extension (42, 62) electrically connected to the through-wiring connection terminal (41, 61) is and
with a second plug contact (50, 70) which forms a through-wiring terminal (51, 71) in a first plane (E1) and with a plug-in receptacle (52, 72) electrically connected to the through-wiring terminal (51, 71) is, wherein the plug-in receptacle (52,72) is formed complementary to the plug-in extension (42,62), characterized in that
at least one of the plug contacts (40,50,60,70) is provided with a further contact portion (43,53,63,73) which is electrically connected to the through-wiring terminal (41,51,61,71) and the connection a supply line (17) for at least one of the lamps (12) is used. Terminal unit according to claim 4, characterized in that the further contact portion (43,53,63,73) is designed as a plug-in extension or as a plug-in receptacle for connecting a further plug-in contact (80,90). Terminal unit according to claim 4 or 5, characterized in that both plug contacts (40,50,60,70) have a further contact portion (43,53,63,73) and the contact portions (43,53,63,73) of both plug contacts ( 40,50,60,70) are identical. Terminal unit according to one of claims 4 to 5, characterized in that the through-wiring terminal (41,51,61,71), the plug-in extension (42,62) or the plug-in receptacle (52,72) and the further contact portion (43, 53, 63, 73) forms a one-piece material-integral, one-piece plug contact (40, 50, 60, 70). Connection unit according to claim 7, characterized in that the plug contact (40,50,60,70) is formed as a stamped and bent part of a suitable, electrically conductive material. Connection unit according to one of the preceding claims, characterized in that the through-wiring connection terminal (61,71) on its side facing away from an insertion opening forms a protective conductor connection terminal (66) which can be contacted with a luminaire housing.

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