EP2827051B1 - Lamp - Google Patents

Description

The present invention relates to a rectilinear and elongated luminaire, in particular for the realization of a light band, with the features of the preamble of claim 1. The invention also relates to an end cap for such a luminaire.

Such a lamp has a rectilinear and elongate device carrier, on which at least one electrical load, preferably at least one light source, is arranged. If the respective illuminant is a circuit board which carries a plurality of LEDs, the device carrier has at least one holding region on a front side, in which at least one such circuit board is arranged. On a rear side of the device carrier, a power electronics can then be arranged, which is electrically connected in the connected state of the lamp with an external electrical power supply and which is electrically connected via electrical cables to at least one such board. The power electronics include e.g. a power supply.

The device carrier may be designed as a sheet metal part or as an extruded profile and accordingly have axially open end faces. For closing the axial end faces of the device carrier end caps may be provided, which are axially attached to one of the axial end faces of the device carrier.

A "rectilinear body" as used herein means a body having a longitudinal central axis extending coaxially with a straight line. By "elongated body" is meant in the present context a body having a length measured in a longitudinal direction of the body that is greater than a height and width measured in a transverse direction of the body. In particular, the length of such an elongate body is at least twice as large, preferably at least ten times as large as a width and a length of the body.

LED stands for light-emitting diode. In the present context, the term LED also OLEDs understood, where OLED stands for organic LED.

In such a lamp electrical cables must be performed by the respective board, which is located on the front of the device carrier, the associated power electronics, which is located on the back of the device carrier. For this purpose, it is basically possible to provide a corresponding opening in the equipment carrier, through which the respective cable can be passed. However, the introduction of such openings means an additional step in the production of the device carrier, which can be associated with comparatively much effort, especially if the equipment carrier this must be inserted into a special tool.

When pulling through the cable through such, formed in the equipment rack opening, there is also the risk that an electrical insulation that covers an electrical conductor in each cable is damaged because such a through hole may have a comparatively sharp edge. To defuse the opening edge, an additional step would be required, which increases the effort. In the worst case, damaged electrical insulation can lead to the conductor of the respective cable contacting the usually metallic equipment carrier, as a result of which the wiring and thus also the entire luminaire become unusable.

A generic lamp is for example from the US 2012/0229025 A1 known. It comprises a rectilinear and elongate device carrier, which has at least one holding region on its front side, in which at least one circuit board is arranged, which carries a plurality of LEDs, power electronics, which is arranged on a rear side of the device carrier, which can be connected to an external electrical power supply and electrically connected to at least one such board via electrical cables, and at least one end cap, which is mounted axially on an axial end face of the device carrier, wherein the respective end cap for the respective holding portion includes at least one cable channel through which at least one of the cables is passed past the respective end face of the device carrier.

From the US 2012/0099317 A1 For example, an LED luminaire is known which has a plurality of illumination modules, each illumination module comprising a plurality of illumination units. The respective lighting unit is designed to be rectilinear and oblong and comprises a rectilinear and elongated device carrier, which has at least one holding region on its front side, in which at least one printed circuit board is arranged, which carries a plurality of LEDs. Furthermore, a power electronics is provided, which is arranged on a rear side of the device carrier, which is connectable to an external electrical power supply and which is electrically connected in a suitable manner with the respective board. Finally, at least one end cap is provided, which is mounted axially on an axial end face of the device carrier. In the known illumination unit, a power supply cable, via which the respective power electronics are supplied with electrical energy, is guided axially through one of the end caps to the outside.

From the DE 10 2010 046 478 A1 Another LED lamp is known in which an elongated housing is provided with end caps end caps.

The present invention is concerned with the problem of providing for such a lamp an improved embodiment, which is characterized in particular by a simplified manufacturability.

This problem is solved according to the invention by the subject matters of the independent claims. Advantageous embodiments are the subject of the dependent claims.

The invention is based on the general idea of equipping at least one end cap of the lamp or of the device carrier with at least one cable channel, through which at least one of the cables is passed. The proposed construction is advantageous in several respects. On the one hand, this design leads to the cables being routed from the front side to the back side on the respective front side of the device carrier, ie past the device carrier on the front side and no longer through the device carrier. Accordingly, can be dispensed with a passage opening for passing the cable through the equipment carrier. In that regard, simplifies the production of the device carrier. On the other hand, such an end cap usually consists of a plastic, so that a passage of the cable through the end cap causes an efficient electrical insulation, so that the risk of direct contact between the respective electrical conductor of the cable and the equipment carrier is reduced. Furthermore, the risk of injury to the electrical insulation of the respective cable when passing through the respective cable duct is reduced, since the end cap, which is usually made of plastic, has no or only a slight abrasive effect with respect to the electrical insulation of the respective cable, as a rule also made of plastic.

The respective cable channel may in particular be spaced transversely to the longitudinal direction of the device carrier from wall sections of the end cap, which engage over the equipment carrier at the end.

According to an advantageous embodiment, the respective cable channel may have a channel region with a closed cross-section in the circumferential direction between a first end open to the respective holding region and a second end open towards the rear side of the device carrier. In this way, an immediate contacting of the cable with the device carrier can be avoided within the channel region, so that even over the electrically insulating material of the end cap sufficient electrical insulation between the cable and the device carrier can be achieved, even if an insulation of the cable to be damaged should. The open internal cross-section of the channel area is preferably larger than an outer cross section of the respective cable. If only one cable is routed through the respective cable channel, the internal cross section of the channel area is a maximum of two times or a maximum of five times as large as the outer cross section of the respective cable.

In an advantageous embodiment, the respective end cap may have a separate cable channel for each cable. Usually, at least two separate cables are used to separately connect a positive pole and a negative pole of the board to corresponding terminals of the power electronics. By using separate cable channels, on the one hand, a defined positioning of the separate cables is achieved. On the other hand simplifies the threading of the cable in the respective cable channel.

According to the invention, the respective cable channel has a push-through region and a fixing region in its cross-section, wherein the two regions openly merge into one another. The push-through area is geometrically shaped so that the respective cable in the push-through area can be pushed through the cable channel relatively easily. For example, an inner cross section of the push-through region is slightly larger than an outer cross-section of the respective cable. In contrast, the fixing region is shaped so that the respective cable arranged therein is fixed to the end cap with a holding force which counteracts pulling out of the cable from the cable channel. For example, in the fixing region, an inner cross section may be slightly smaller than the outer cross section of the respective cable. The respective holding force can be conveniently generated by frictional engagement. During assembly, the respective cable can thus be passed through the respective cable channel in a particularly simple manner through the push-through region. Subsequently, the cable can be transferred from the push-through area into the fixing area through the open transition between the push-through area and the fixing area. In the fixing area, the desired fixation of the cable then takes place on the end cap.

According to an advantageous development of the push-through region may have a circular arc-shaped inner circumference. The circular arc-shaped inner circumference extends in a circumferential direction from one end to the other end of the transition between push-through region and fixing region.

In an advantageous embodiment, the fixing region may have an inner circumference converging with increasing distance from the push-through region. For example, the fixing region may have a substantially triangular inner circumference. Such an embodiment of the fixing region causes pulling on the cable acting in the pulling direction Abuse forces pull the cable into the converging inner circumference of the fixing, whereby the holding forces generated in the fixing, acting between the cable and end cap holding forces are increased.
In another embodiment, a transition between push-through region and fixing region may have barb-like projections which favor an adjustment of the cable from the push-through region into the fixing region and counteract a return adjustment of the cable from the fixing region into the push-through region. Thus, the projections secure the cable transferred to the fixing area within the fixing area.

According to another embodiment, the fixing region may face the front side of the device carrier, while the push-through region is remote from the front side of the device carrier. This design is based on the recognition that abusive forces in the pulling direction regularly pull the cables led past the front towards the front. Due to the selected orientation of the cross section of the cable channel, these tensile forces lead to an increase in the holding forces in the cable channel.

According to another advantageous embodiment, the respective end cap may have axially projecting outer walls as well as axially projecting inner walls. The outer walls are adapted to an outer contour of the device carrier, while the inner walls are adapted to an inner contour of the device carrier. As a result, the respective end cap can be fixed particularly easily enough firmly on the equipment carrier. In particular, a surface contact between the outer walls and the outer contour on the one hand and between the inner walls and the inner contour on the other hand can be realized.

Preferably, the device carrier is an extruded profile, which may preferably be configured as a hollow chamber profile and accordingly has at least one closed in the circumferential direction of the hollow chamber. In this case, the outer contour of the device carrier runs around the outside of the hollow chamber profile, while the inner contour of the device carrier rotates inside along the hollow chamber profile.

Suitably, the outer walls and the inner walls can be coordinated so that adjusts a clamped action between the end cap and the equipment carrier in the mounted state. For example, inner walls and outer walls may have a decreasing distance in the insertion direction from each other, whereby a clamping action between the outer walls and the inner walls on the one hand and the circumferential wall of the inserted therein equipment carrier on the other hand can be achieved.

Suitably, the outer walls are thicker, so have a greater wall thickness than the inner walls. As a result, the inner walls can deform more elastic when plugging than the outer walls, whereby a visually high-quality outer contour for the lamp is maintained overall.

In another advantageous embodiment, the respective cable channel may have a lateral recess open to the respective holding region at an end associated with the respective holding region. This recess simplifies the laying of the respective cable, as it allows the respective cable to be inserted laterally into the cable channel. The recess may for example be configured U-shaped. At the same time, the recess may converge with respect to its open end to create a clamping action there for the respective cable.

In another embodiment, the respective end cap on an outer side facing away from the equipment carrier have an outwardly projecting sealing lip arrangement which cooperates when using the lamp in a light band with the sealing lip arrangement of the end cap of an adjacent light of the light band. With the help of such sealing lips contamination between frontally abutting lights can be reduced. Furthermore, this simplifies a proper positioning of the adjoining lights.

Other important features and advantages of the invention will become apparent from the dependent claims, from the drawings and from the associated figure description with reference to the drawings.

It is understood that the features mentioned above and those yet to be explained below can be used not only in the particular combination given, but also in other combinations or in isolation, without departing from the scope of the present invention.

Preferred embodiments of the invention are illustrated in the drawings and are explained in more detail in the following description, wherein the same reference numerals refer to the same or similar or functionally identical components.

Fig. 1

eine Seitenansicht einer Leuchte,

Fig. 2

ein Querschnitt der Leuchte mit Tragprofil und Geräteträger bei einer einflammigen Leuchte,

Fig. 3

ein Querschnitt wie in Fig. 2, jedoch ohne Tragprofil bei einer zweiflammigen Leuchte,

Fig. 4

eine Innenansicht einer Endkappe für eine einflammige Leuchte,

Fig. 5

eine Innenansicht der Endkappe für eine zweiflammige Leuchte,

Fig. 6

eine isometrische Innenansicht der Endkappe für die einflammige Leuchte,

Fig. 7

eine isometrische Innenansicht der Endkappe für die zweiflammige Leuchte,

Fig. 8

ein Längsschnitt der Endkappe im Bereich eines Kabelkanals,

Fig. 9

eine Seitenansicht der Endkappe,

Fig. 10

eine vergrößerte Draufsicht der Endkappe im Bereich von zwei Kabelkanälen,

Fig. 11

eine isometrische Außenansicht der Endkappe,

Fig. 12

eine Seitenansicht von zwei benachbarten Leuchten eines Lichtbands bei distaler Anordnung,

Fig. 13

eine Seitenansicht wie in Fig. 12, jedoch bei proximaler Anordnung.

Show, in each case schematically,

Fig. 1

a side view of a lamp,

Fig. 2

a cross section of the luminaire with support profile and equipment carrier in a single-flame lamp,

Fig. 3

a cross section as in Fig. 2 , but without support profile for a two-lamp luminaire,

Fig. 4

an inside view of an end cap for a single-flame lamp,

Fig. 5

an inside view of the end cap for a two-lamp luminaire,

Fig. 6

an isometric interior view of the end cap for the single-lamp,

Fig. 7

an isometric interior view of the end cap for the two-lamp lamp,

Fig. 8

a longitudinal section of the end cap in the region of a cable channel,

Fig. 9

a side view of the end cap,

Fig. 10

an enlarged plan view of the end cap in the region of two cable channels,

Fig. 11

an isometric view of the end cap,

Fig. 12

a side view of two adjacent lights of a light band in a distal arrangement,

Fig. 13

a side view as in Fig. 12 but with a proximal arrangement.

According to the Fig. 1 to 3 includes a straight and elongated light 1, with the help of a in the FIGS. 12 and 13 indicated light band 2 can be realized, an in Fig. 1 shown with a broken line and in Fig. 3 omitted rectilinear and elongated support section 3, by means of which the lamp 1 can be attached to a wall or ceiling. Furthermore, the lamp 1 comprises a rectilinear and elongated device carrier 4, which in the embodiments shown here of FIGS. 2 and 3 in cross-section each has a hollow chamber profile 5. The device carrier 4 carries according Fig. 1 On its rear side 6, a power electronics 7 and a connection element 8. On its front side 9, the equipment carrier 4, at least one holding portion 10, in which at least one board 11 is arranged, which carries a plurality of LEDs 12. The board 11 is also rectilinear and elongated. The LEDs 12 are arranged side by side in a rectilinear row, which are in the FIGS. 2 and 3 perpendicular to the plane of the drawing. The board 11 forms with the LEDs 12 an electric lighting device, which is operated by means of the power electronics 7. If two or more boards 11 are arranged in the respective holding area 10, they are lined up in the longitudinal direction of the device carrier 4.

In the assembled state of the lamp 1, the power electronics 7 is connected to an external electrical power supply, for example, to a power grid of a building. In detail, the respective board 11 is according to Fig. 1 via low voltage cable 13, the in Fig. 1 are indicated only by a broken line, connected to the power electronics 7. The power electronics 7 is via high voltage cable 14, the in Fig. 1 are also indicated by a broken line, connected to the connecting element 8. The connecting element 8 has according to the FIGS. 2 and 3 a plurality of gripping portions 15, according to Fig. 2 engage in engaging portions 16 of a current-carrying rail 17, which is arranged in the support section 3 and which is suitably electrically connected to the external power supply. In the present context, a voltage of up to 60 V DC or AC is in the low-voltage range, while a voltage above 100 V DC or AC is in the high-voltage range.

The support profile 3 is designed here as a sheet metal part. In contrast, the device carrier 4 is preferably an extruded profile. The device carrier 4 is locked to the support section 3, including outwardly facing latching contours 18 of the device carrier 4, which extend over the entire length of the device carrier 4, with complementary counter-locking contours 19 of the support section 3 cooperate, which also extends over the entire length of the support profile 3 extend. In addition, according to the Fig. 1 to 3 Retaining clips 20 may be provided which are fixed to the equipment carrier 4 and bias the support section 3 against the equipment carrier 4. The power electronics 7 is fixed here by means of a bracket clamp 21 on the equipment carrier 4.

At the in Fig. 2 shown embodiment, only a holding portion 10 for accommodating at least one board 11 is provided in the equipment carrier 4. Thus, it is in the in Fig. 2 shown embodiment by a single-flame lamp 1. In contrast, shows Fig. 3 a two-lamp lamp 1, in which two such holding portions 10 for accommodating at least one board 11 is provided in the equipment carrier 4. In both embodiments has the device carrier 4 in its hollow chamber profile 5 for each holding portion 10 each have a recess 22 which is recessed with respect to the front side 9 in the direction of the back 6 and in which the respective holding portion 10 is formed. Further, a cover 23 is provided for the respective recess 22, which is formed by a light optics, which covers the respective board 11 and which closes the respective recess 22.

The fixing of the respective board 11 in the holding area 10 on the equipment carrier 4 takes place with the aid of holding webs 24, which are plastically deformed and in each case overlap a longitudinal side edge of the board 11 and thus bias the board 11 against the holding area 10 and fix it thereto. In Fig. 2 is the deformed state of the holding webs 24 reproduced while Fig. 3 purely exemplarily an undeformed initial state of the holding webs 24 reproduces, which is present in the manufacture of the equipment carrier 4 and when inserting the boards 11. By subsequent plastic deformation of the holding webs 24, the pressing and fixing of the boards 11 takes place on the equipment carrier. 4

According to Fig. 1 is the preferred metallic equipment carrier 4 axially frontally provided in each case with an end cap 25, which expediently consists of a plastic. For this purpose, the respective end cap 25 is axially attached to an axial end face 26 of the device carrier 4. The axial direction is defined by the longitudinal direction of the lamp 1. These end caps 25 will be described below with reference to FIGS 4 to 13 explained in more detail.

According to the Fig. 4 to 7 The respective end cap 25 has in each case at least one cable channel 27 for the respective holding region 22. Two separate cable channels 27 are expediently provided for each holding region 22. According to Fig. 8 can be passed through the respective cable channel 27 at least one of the low voltage cable 13, which the respective board 11 with the power electronics 7 connects. In this case, the respective cable 13 is guided past the respective end face 26 of the device carrier 4 through the respective cable channel 27. In Fig. 8 the device carrier 4 is indicated in the region of the associated end face 26 with a broken line, to which the end cap 25 shown is attached.

The 4 and 6 each show an end cap 25 for a single-flame lamp 1, so that exactly two cable channels 27 are provided for two separate cables 13 in an end cap region 28 assigned to the respective holding region 10. In contrast, the show FIGS. 5 and 7 each one end cap 25 for a two-lamp lamp 1, so that accordingly two end cap portions 28 are formed on the end cap 25, each of which two separate cable channels 27 are assigned.

How in particular the Fig. 4 to 8 can be seen, the respective cable channel 27 between a respective holding portion 10 to the open first end 29 and a 6 open to the back of the device carrier 4 second end 30 each have a channel region 31 which has a closed cross-section in the circumferential direction. As a result, in each case material of the end cap 25 is located between the cable 13 and the end face 26 of the equipment carrier 4.

How in particular the enlarged representation of Fig. 10 as well as the cut of Fig. 8 The respective cable channel 27 has in its cross-section a push-through region 32 and a fixing region 33. The push-through region 32 and the fixing region 33 openly merge into one another. A corresponding open transition is in Fig. 10 denoted by 34. The push-through region 32 is geometrically designed so that the respective cable 13 can be pushed through the push-through region 32 relatively easily. In contrast, the fixing region 33 is geometrically designed such that the respective cable 13 arranged therein is fixed to the end cap 25 with a holding force which is an extraction the cable 13 from the cable channel 27 counteracts. In the simplest case, an open inner cross section of the push-through region 23 is greater than an outer cross-section of the respective cable 13, while an open inner cross-section of the fixing region 33 is smaller than the outer cross-section of the respective cable 13. For example, the push-through region 32 can Fig. 10 have a circular arc-shaped inner circumference. By contrast, the fixing region 33 can have an inner circumference converging with increasing distance from the push-through region 32. In Fig. 10 The fixing region 33 converges downward or toward the device carrier 4 in a substantially triangular manner.

The transition 34 between the through-insertion region 32 and the fixing region 33 may have barb-like projections 35 which project inwards in the transition 34. In this case, the projections 35 are shaped and positioned such that they favor an adjustment of the cable 13 from the push-through region 32 into the fixing region 33, while they counteract a return adjustment of the cable 13 from the fixing region 33 into the push-through region 32.

How in particular the FIGS. 8 and 10 can be seen, the arrangement of the different cross-sectional areas 32, 33 of the cable channel 27 is such that the fixing region 33 of the end face 26 of the device carrier 4 faces, while the push-through portion 32 faces away from said end face 26.

How the Fig. 4, 5 and 8th can be seen particularly clearly, the respective cable channel 27 may have at its the respective holding portion 10 associated end 29 a lateral, the respective holding portion 10 open recess 36. According to the 4 and 5 the recess 36 is substantially U-shaped and favors according to Fig. 8 the deflection of the respective cable 13 from the vertically oriented cable channel 27 into the horizontally oriented holding area 10.

How in particular the Fig. 4 to 8 can be seen, the respective end cap 25 has axially projecting outer walls 37 and axially projecting inner walls 38. The outer walls 37 are connected to an in Fig. 8 indicated outer contour 39 of the device carrier 4 and the hollow chamber profile 5 adapted. By contrast, the inner walls 38 are adapted to an inner contour 40 of the device carrier 4 or the hollow chamber profile 5. As a result, a surface contact between the walls 37, 38 of the respective end cap 25 and the device carrier 4 and the hollow chamber profile 5 is generated. In Fig. 8 further chamfers are recognizable, with the help of the attachment of the end cap 25 simplifies the device carrier 4 and a clamping action for the respective end face 26 between the walls 37, 38 of the end cap 25 can be easily generated.

How in particular the Fig. 9 and 11 to 13 can take, the respective end cap 25 on an outer side facing away from the device carrier 4 outside 41 have an outwardly projecting sealing lip assembly 42 which in the examples shown here in each case two mutually parallel and spaced apart sealing lips 43 includes. It is noteworthy that the sealing lips 43 in the axial direction are about twice as high as they protrude beyond the outer side 41 of the end cap 25, for which purpose the sealing lips 43 are recessed on the end cap 25 accordingly. When using the lamp 1 in a light band 2, the sealing lip arrangement 42 of the end cap 25 of a lamp 1 can now interact with the sealing lip arrangement 42 of the end cap 25 of a lamp 1 adjacent thereto. Hereby apply according to Fig. 13 the one sealing lips 43 in the distances of the other sealing lips 43 and vice versa.

Claims (11)

1. Linear and elongated lamp, in particular for a strip light (2),

   - having a linear and elongated device carrier (4) which has at least one retaining region (10) on its front side (9), in which at least one circuit board (11) is arranged which bears several LEDs (12),

   - having power electronics (7) which are arranged on a rear side (6) of the device carrier (4), which are able to be connected to an external electrical energy supply and which are electrically connected to at least one such circuit board (11) via electric cable (13),

   - having at least one end cap (25) which is axially attached to an axial front side (26) of the device carrier (4),

   - wherein the respective end cap (25) for the respective retaining region (10) contains at least one cable channel (27) through which the at least one of the cables (13) is guided past the respective front side (26) of the device carrier (4),

   characterised in that

   - the respective cable channel (27) has an insertion region (32) and a fixing region (33) in its cross-section which openly merge into each other,

   - the insertion region (32) is geometrically formed such that the respective cable (13) is able to be inserted relatively simply,

   - the fixing region (33) is geometrically formed such that the respective cable (13) arranged therein is fixed to the end cap (25) with a retaining force which counteracts a pulling out of the cable (13) from the cable channel (27).
2. Lamp according to claim 1,
   characterised in that
   the respective cable channel (27) has a channel region (31) having a cross-section which is closed in the peripheral direction between a first end (29) which is open towards the respective retaining region (10) and a second end (30) which is open towards the rear side (6) of the device carrier (4).
3. Lamp according to claim 1 or 2,
   characterised in that
   the respective end cap (25) has a separate cable channel (27) for each cable (13).
4. Lamp according to one of the preceding claims,
   characterised in that,
   the insertion region (32) has a circular arc-shaped inner periphery.
5. Lamp according to one of the preceding claims,
   characterised in that
   the fixing region (33) has an inner periphery which converges with increasing distance from the insertion region (32).
6. Lamp according to one of the preceding claims,
   characterised in that
   a transition (34) between the insertion region (32) and the fixing region (33) has barblike projections (35) which support a movement of the cable (13) from the insertion region (32) into the fixing region (33) and counteract a return of the cable (13) from the fixing region (33) into the insertion region (32).
7. Lamp according to one of the preceding claims,
   characterised in that
   the fixing region (33) is facing towards the front side (26) of the device carrier (4), whilst the insertion region (32) is facing away from the front side (26) of the device carrier (4).
8. Lamp according to one of claims 1 to 7,
   characterised in that
   the respective cable channel (27) has a lateral recess (26) which is open towards the respective retaining region (10) at an end (29) allocated to the respective retaining region (10).
9. Lamp according to one of claims 1 to 8,
   characterised in that
   the respective end cap (25) has axially protruding outer walls (37) which are adapted to an outer contour (39) of the hollow chamber profile (5), and axially protruding inner walls (38) which are adapted to an inner contour (40) of the hollow body profile (5).
10. Lamp according to one of claims 1 to 9,
    characterised in that
    the respective end cap (25) has a sealing lip arrangement (42) protruding outwards on an outer side (41) facing away from the device carrier (4), said sealing lip arrangement interacting with the sealing lip arrangement (42) of the end cap (25) of an adjacent lamp (1) of the strip light (2) in the case of a use of the lamp (1) in a strip light (2).
11. End cap for a lamp (1) according to one of claims 1 to 10,

    - wherein the end cap (25) contains at least one cable channel (27) through which the at least one cable (13) is able to be guided,

    - wherein the respective cable channel (27) has an insertion region (32) and a fixing region (33) in its cross-section which openly merge into each other,

    - wherein the insertion region (32) is geometrically formed such that the respective cable (13) is able to be inserted relatively simply,

    - wherein the fixing region (33) is geometrically formed such that the respective cable (13) arranged therein is fixed to the end cap (25) with a retaining force which counteracts a pulling out of the cable (13) from the cable channel (27).

Images