DE102021207581A1 - Household refrigerating appliance with a light source module arranged specifically with a mounting part on an inner container, and mounting method - Google Patents

Abstract

One aspect of the invention relates to a household refrigeration appliance (1) with an inner container (6) which, with walls (6a, 6b, 6c), delimits a receiving space (3) for food in the household refrigeration appliance (1), at least one wall (6a, 6b, 6c) has at least one recess (10, 11, 12, 13), on which a light source module (5) of the domestic refrigeration appliance (1) is arranged, the light source module (5) having at least one holding element (8, 9) which is used to hold through the recess (10 to 13), the household refrigeration appliance (1) having an additional, separate mounting part (14) which is arranged on the outside (7) of the wall (6a, 6b, 6c) facing away from the receiving space (3). , wherein the holding element (8, 9) for holding the light source module (5) is coupled to the mounting part (14). One aspect also relates to a method.

Description

One aspect of the invention relates to a household refrigeration appliance with an inner container. The inner container has walls. These delimit an accommodating space for food in the household refrigeration appliance. A wall of the inner container has a continuous recess on which a light source module of the household refrigeration appliance is arranged. The light source module has at least one holding element, which reaches through the recess for holding. A further aspect of the invention relates to a method for mounting a light source module on a wall of an inner container of a household refrigeration appliance.

From the DE 10 2016 202 567 A1 such a household refrigeration appliance and such a method are known. There, the light source module is attached directly to the wall, and a direct coupling of a holding element of the light source module to an outside of the wall of the inner container is provided.

Since an inner container is usually made of plastic and is produced, for example, by deep drawing or injection molding, such a wall is also relatively thin. Mechanical forces that occur when such a light source module is firmly positioned on an inner container wall can therefore also exert undesired forces on this wall.

It is the object of the present invention to create a household refrigeration appliance and a method in which the mounting and the positioning of a light source module on a wall of an inner container are improved.

This object is achieved by a household refrigeration appliance and a method according to the independent claims.

One aspect of the invention relates to a household refrigeration appliance with an inner container. The inner container has walls. These delimit an accommodating space for food in the household refrigeration appliance. A wall of the inner container has a continuous recess on which a light source module of the household refrigeration appliance is arranged. The light source module has at least one holding element, which reaches through the recess for holding.

The household refrigeration appliance has an additional, separate assembly part. This is arranged on the outside of the wall of the inner container facing away from the receiving space. The holding element for holding the light source module is mechanically directly coupled to this assembly part. Such a household refrigeration appliance improves the assembly and attachment of a separate light source module to a wall of an inner container. Due to the separate mounting part, the forces of the holding element of the light source module no longer act directly on the wall of the inner container, in particular no longer directly on the outside of the wall of the inner container. Rather, the mounting part is arranged in between, which absorbs the holding forces of the holding element. In particular, the holding element then rests directly on the assembly part. The holding forces are then no longer transferred directly to the outside of the wall by the holding element, but are transferred to the assembly part. As a result, force can be transmitted over a larger area to the outside of the wall and damage to the wall of the inner container can thus be avoided.

In one embodiment, the mounting part rests directly on the outside of the wall. The mounting part is larger than the holding element, so that the mounting part can bear over a larger area on the outside of the wall than if the holding element were to bear directly on this outside.

In one exemplary embodiment, the mounting part has a snap geometry, with which the holding element is snapped directly for holding. It is therefore not provided in this exemplary embodiment that the holding element bears against a planar rear side of the assembly part. Rather, this snap-in geometry enables a mechanical coupling principle in which the retaining element also snaps onto this assembly part. This enables an even more stable and positionally fixed arrangement of the light source module.

In one embodiment, the snap geometry is a multi-step snap. This means that it has at least two discrete snap steps with which the holding element can snap individually. This also improves the attachment of the light source module again. Depending on any tolerances that may be present, at least one of these at least two discrete snap stages can then be selected in order to achieve the positionally fixed arrangement of the light source module.

In one embodiment, the snap geometry is a snap staircase. This snap stair has multiple snap steps. These are arranged at different distances from the outside of the inner container. This means that in a direction perpendicular to the plane of the outside of the wall, the distance from a snap step to the outside is smaller than that related distance of the at least second snap step to this outside. This further improves the highly functional snapping concept and improves the simple and position-fixed installation of the light source module.

In one embodiment, a ratchet-like structure is thus created that has different snap stages than ratchet sections.

In one embodiment, the snap geometry has a feedthrough. This is thus designed as a hole and designed to be continuous with the snap geometry. In particular, this passage is formed continuously through the assembly part. The holding part extends through the passage, so that it is arranged on both sides of the passage in the direction of a hole axis of the passage. The holding element is snapped directly to this mounting part on the outside of the mounting part facing away from the outside of the wall. A compact structure can be achieved by this embodiment. On the other hand, the retaining element can then also easily be passed through the assembly part and can be snapped onto the rear side of the assembly part in a particularly advantageous manner. This further improves the mechanical coupling and the position-fixed holding. In addition, the holding element is more or less guided through this passage and can be held in particular when adjusting the snap position. An undesired breaking out of the holding element or an insufficient snap-in position resulting therefrom can be avoided as a result. In this context, the passage also serves as a guide for the holding element and as a stabilization of the holding element in the snapped-in state.

In one embodiment, the passage has a wide insertion area for inserting the holding element. The feedthrough also has a narrower holding area adjoining the insertion area in one direction, in particular the vertical direction. In one exemplary embodiment, the snap geometry is arranged on the mounting part at the side of the holding area. This is another very advantageous embodiment. This is because the holding element can then be guided very easily through the mounting part, coming from the wall, through the wider insertion area, even with a wider element area of the holding element. This can be done, for example, by a linear movement perpendicular to the plane of the wall. If the holding element is then passed through this insertion area of the bushing in some areas, the holding element can be pushed in the vertical direction from the insertion area into the holding area in a further assembly step. Since the narrower holding area is dimensioned smaller in this regard, the holding element is also guided in this movement with a narrower element part, whereby the snapping process of the holding element with the snapping geometry on the rear side of the assembly part is also guided accordingly.

Since the snap geometry is not next to the insertion area when viewed in the vertical direction, but only in the area of the holding area when viewed in the vertical direction, the basic insertion of the holding element and its passage through the insertion area can be carried out very easily without snapping occurring at this point. This enables an intermediate assembly state of the holding element after it has been passed through the insertion region, in which snapping is not yet provided. As a result, the targeted snapping can take place more precisely and accurately by subsequently moving the holding element from the insertion area into the holding area. Preferably, viewed in a direction perpendicular to the longitudinal axis, the snap geometry is formed on both sides of the holding area. As a result, the snapping can be further improved. This is because the retaining element thus engages in a snap geometry section on both the left-hand side and the right-hand side of the retaining area. As a result, a symmetrical snap-in connection is made possible both on the left-hand side and on the right-hand side, so to speak, in relation to the holding area between a snap geometry area and the holding element. The above-mentioned height direction is given when the insertion area and the holding area are arranged adjoining one another in this respect. However, it is also possible for a different spatial direction, for example the width direction, to be provided here if the insertion area then adjoins the holding area in this horizontal direction. In principle, other installation positions can also be provided, so that the insertion area is then also arranged in a different way. In particular, however, the insertion area is always arranged in series with the holding area.

In one embodiment, the snap geometry mounting member is manufactured as one piece. Such a one-piece design reduces the number of components and enables a stable and fixed position of the snap geometry on the assembly part.

In one embodiment, the holding element is designed as a T-shaped snap element. This T-shape enables a particularly advantageous positioning in the bushing and, on the other hand, a particularly advantageous snapping with the snapping geometry is achieved. Because a relevant T-strain can then be in the schma Len holding area can be guided particularly advantageously, on the other hand, the protruding wings of the T-roof can each snap on both sides of this narrower holding area with snap geometry sections.

In one embodiment, a T-roof of the T-shaped snap element is snapped to the snap geometry on both sides for passage on the outside of the mounting part facing away from the wall. A snapping that is symmetrical in this respect enables a particularly precise and accurate arrangement and fixing of the position of the light source module. A tilting or the like that is undesirable in this respect can be avoided as a result.

In one exemplary embodiment, the mounting part is designed as an elongate rail. This also makes it possible for a light source module that is longer in this respect, in particular a light source module designed as a rail, to be fastened and for this purpose then also several bushings and holding elements are provided which can be snapped onto the mounting part at several corresponding points.

In one exemplary embodiment, the mounting part is designed at an angle when viewed in cross section relative to its longitudinal axis. This increases the mechanical stability of the assembly part. Undesirable deformations can be avoided in this way. In this way, corresponding assembly forces can be absorbed in a particularly advantageous manner when it is snapped onto the holding element. In addition, such a shape of the mounting part also allows it to be placed against different wall regions on the outside of the wall of the inner container. Even then, an advantageous and larger-area coupling of the mounting part to the wall can take place and a compact design of the arrangement can be made possible.

In particular, the mounting part is L-shaped in cross section.

In one exemplary embodiment, the mounting part has a first L-leg which is arranged in abutting manner on a first outer side of a first wall region of the wall. The mounting part also has a second L-leg, which is arranged adjacent to a second outer side of a second wall area of the wall. The first wall area and the second wall area are arranged at an angle to one another. Due to these complementary angled shapes between the mounting part and the wall, the mounting part can be placed on the outside of the wall in a very space-saving manner and with a precise fit, especially when the mounting area is uneven. In addition, this exemplary embodiment means that the assembly part cannot slip in at least one spatial direction on the wall.

In one embodiment, the mounting part is made of metal or plastic. In particular, it is designed in one piece.

In one embodiment, the light source module is formed as an elongate rail. Light sources of the light source module can preferably be in the form of light-emitting diodes.

In the assembled state of the household refrigeration appliance, the outside of the wall of the inner container can be covered with a thermally insulating material, in particular rigid polyurethane foam. When the household refrigeration appliance is in the assembled state, the mounting part can be embedded in the thermally insulating material or encased by it.

The inner container can be made of plastic, in particular polystyrene, and can be produced by deep-drawing or injection molding.

In one exemplary embodiment, the wall of the inner container has a receiving recess on its inside facing the receiving space, in which recess the light source module is inserted. The receiving recess is preferably formed in one piece or integrally with the inner container. The light source module is thus arranged countersunk, at least in some areas, and does not undesirably protrude or extend too far into the receiving space. The light source module can be positioned more compactly by such an embodiment. As a result, it can also be attached in a mechanically more stable manner and is better protected against impact or the like.

In one exemplary embodiment, a housing wall of the light source module that faces the receiving space is arranged flush with a wall region of the wall adjoining the receiving recess at the front. As a result, the light source module is arranged sunk so far into the receiving recess, viewed in the width direction, that there is no overhang. The advantages mentioned above are achieved to a particular extent as a result.

A further aspect of the invention relates to a method for installing a light source module on an inner container of a household refrigeration appliance. The household refrigeration appliance can be designed according to the above-mentioned aspect or an advantageous exemplary embodiment thereof. The source of light lenmodul is brought up to the wall from the inside and thus from the receiving space. The wall has at least one recess through which at least one holding element of the light source module is passed. The separate assembly part is arranged on the outside of the wall. In this case, a passage in the assembly part is arranged, at least in some areas, in alignment with the recess in the wall. When passing the holding element of the light source module through the recess in the wall, this holding element is then also passed through the passage, in particular a wide insertion area, in one exemplary embodiment. In addition, the light source module is then moved in a direction perpendicular to the insertion direction and the holding element, in particular with a T-stem, is thereby inserted from the insertion area into an adjoining, narrower holding area of the leadthrough in the assembly part. With this movement, the snapping of the retaining element, in particular the T-roof of the T-shaped snap element, which is the retaining element, is then also simultaneously generated in one exemplary embodiment with a snap geometry formed on the rear side of the assembly part.

Advantageous exemplary embodiments of the method are given by advantageous exemplary embodiments of the domestic refrigeration appliance. The components of the domestic refrigeration appliance in question allow the respective assembly steps in the method to be carried out alone or in operative connection.

The indications “top”, “bottom”, “front”, “back”, “horizontal”, “vertical”, “depth direction”, “width direction”, “height direction” are the positions given for intended use and intended positioning of the device orientations given.

Further features of the invention result from the claims, the figures and the description of the figures. The features and feature combinations mentioned above in the description, as well as the features and feature combinations mentioned below in the description of the figures and/or shown alone in the figures, can be used not only in the combination specified, but also in other combinations or on their own, without the frame to abandon the invention. The invention is therefore also to be considered to include and disclose embodiments that are not explicitly shown and explained in the figures, but that result from the explained embodiments and can be generated by separate combinations of features. Versions and combinations of features are also to be regarded as disclosed which therefore do not have all the features of an originally formulated independent claim.

• 1 eine schematische Darstellung eines Ausführungsbeispiels eines erfindungsgemäßen Haushaltsgeräts;
• 2 eine Schnittdarstellung durch einen Teilbereich des Haushaltskältegeräts, in dem ein Lichtquellenmodul und ein Montageteil an einer Wand eines Innenbehälters angeordnet sind;
• 3 eine perspektivische Darstellung eines Teilbereichs der Wand des Innenbehälters;
• 4 eine perspektivische Darstellung eines Ausführungsbeispiels eines Montageteils;
• 5 eine perspektivische Schnittdarstellung durch die Anordnung gemäß 2; und
• 6 eine perspektivische Teildarstellung eines montierten Lichtquellenmoduls an der Wand mit einem Halteelement, das an einem Montageteil verschnappt ist.

Exemplary embodiments of the invention are explained in more detail below with the aid of schematic drawings. Show it:

• 1 a schematic representation of an embodiment of a household appliance according to the invention;
• 2 a sectional view through a portion of the household refrigeration appliance, in which a light source module and a mounting part are arranged on a wall of an inner container;
• 3 a perspective view of a portion of the wall of the inner container;
• 4 a perspective view of an embodiment of a mounting part;
• 5 a perspective sectional view through the arrangement according to 2 ; and
• 6 a partial perspective view of a mounted light source module on the wall with a retaining element that is snapped onto a mounting part.

Elements that are the same or have the same function are provided with the same reference symbols in the figures.

In 1 an embodiment of a household refrigeration appliance 1 is shown in a perspective view. The household refrigeration appliance 1 is designed for storing and preserving food. The household refrigeration appliance 1 can be a refrigerator or a freezer or a fridge-freezer combination appliance. The domestic refrigeration appliance 1 has a housing 2 . This housing 2 can also be referred to as the outer housing. The housing 2 has at least the walls 6a, 6b and 6c, which are provided with reference numbers and delimit a receiving space 3 of the household refrigeration appliance 1 . The receiving space 3 is intended to be designed for storing food. It can be a refrigerator compartment or a freezer compartment.

In addition, the household refrigeration appliance has a door 4 . This is provided to close the receiving space 3 .

The household refrigeration appliance 1 also has at least one light source module 5 . The light source module 5 is provided for illuminating the receiving space 3 . It is arranged on a wall 6a, here for example the vertical side wall, of an inner container 6 of the household refrigeration appliance 1. The light source module 5 is designed here as an elongate rail and is oriented here, for example, in the vertical direction. The light source module 5 preferably has a plurality of light sources, in particular light-emitting diodes. It is arranged on an inside 7 of the wall 6a.

In 2 is a partial view of the household refrigeration appliance 1 according to FIG 1 shown. A vertical sectional view is shown here. The sectional plane is thus formed here by the height direction (y-direction) and the width direction (x-direction).

As can be seen, the light source module 5 rests on the inside 7 of the wall 6a. In the exemplary embodiment, the light source module 7 has at least one holding element 8 , here two holding elements 8 and 9 . These are arranged on the back. The holding elements 8 and 9 extend through recesses 10 ( 3 ) and 11 in wall 6a. In the mounted state, these holding elements 8 and 9 extend on both sides of the wall 6a. They thus extend into an intermediate space between the inner container 6 and the outer housing 2 . Thermally insulating material can preferably be arranged in this intermediate space.

It is also possible, as shown in the perspective view of a portion of wall 6a in 3 it is shown that further recesses 12 and 13 are provided. Further holding elements, which are formed on the light source module 5, can then extend through these.

In addition, the household refrigeration appliance 1 has a mounting part 14, as shown in the sectional view in FIG 2 is shown. The mounting part 14 is separate from the light source module 5 and the wall 6a. In particular, it is a one-piece component. The mounting part 14 can also be referred to as a backing part. It is arranged outside of the accommodating space 3 . In particular, it is in contact with an outer side 15 of the wall 6a facing away from the receiving space 3 . The mounting part 15 also has a passage 16 through which the holding element 8 extends. In the exemplary embodiment, it has at least two passages 16 and 17 through which the holding elements 8 and 9 extend. The bushings 16 and 17 are designed here as continuous holes.

In 3 is, as already mentioned, a partial detail of the wall 6a shown. In this embodiment, the area is not flat. Rather, it has an elevation 18 . This is a hump-like elevation. In this survey 18, the recesses 10 to 13 are formed.

In 4 an embodiment of the mounting part 14 is shown in a perspective view. There is a long rail here. It has a longitudinal axis A. The mounting part 14 is angled here. In particular, it is L-shaped. This L-shape is formed perpendicularly to the longitudinal axis A in cross-section. A first L-leg 19 and a second L-leg 20 arranged at an angle thereto are formed here. In the assembled state, the first leg 19 of the L rests on a first wall area 21 of this elevation 18 . The second leg 20 of the L rests against a second wall area 22 of this elevation 18 .

The assembly part 14 has the bushings 16 and 17 already explained. The passage 16 has a wide insertion area 23 here. A narrower holding area 24 of the bushing 16 is then formed. The bushing 17 is also designed accordingly.

As can also be seen, the assembly part 14 also has a snap geometry 25 . The snap geometry 25 is formed on the first leg 19 of the L. It is integrally formed on an outer side 19a of the mounting part 14, in particular of the first L-leg 19, facing away from the wall 6a. This means that it is made in one piece with the mounting part 14 . The snap geometry 25 has at least one snap element. In particular, in the exemplary embodiment, it is designed as a multi-stage snap-in mechanism, which has at least two discrete snap-in steps. This is formed here by the ratchet-like structure of the multiple snap elements 26, wherein in 4 only one of the snap elements is provided with the corresponding reference number.

According to the exemplary embodiment shown, the snap geometry 25 is formed here by two separate snap geometry sections 25a and 25b. These are formed immediately adjacent to the narrower holding area 24 on the left and right. Viewed in the direction of the longitudinal axis A, the snap geometry 25 is not formed in that area in which the wider insertion area 23 extends. The snap geometry sections 25a and 25b are formed symmetrically only on both sides of the slot-like, narrower holding area 24 . A corresponding configuration is implemented in the bushing 17, as shown in 4 can be seen.

During assembly, the assembly part 14 is arranged on the elevation 18 . The light source module 5 is placed on the opposite side of the wall 6a. For this purpose, the holding element 8 and the holding element 9 are guided through the recess 10 and the recess 11 . Since the recesses 10 and 11 are arranged on the outside 15 of the wall 6a in alignment with the passages 16 and 17, the holding element 8 is then also inserted through the insertion area 23 and the holding element 9 is passed through the corresponding insertion area of the bushing 17 . Once this intermediate assembly state has been reached, the light source module 5 is then moved downward perpendicularly to this insertion direction, in the exemplary embodiment in the direction of the longitudinal axis A. This means that the holding element 8 and the holding element 9 are inserted from the respective insertion areas 23 into the respective narrower holding areas. As a result, snapping regions 8a and 9a ( 2 ) of the retaining elements 8 and 9 on these respective snap geometries 25 or on the corresponding snap geometry in the area of the passage 17. In the exemplary embodiment, the retaining elements 8 and 9 are designed as T-shaped snap elements. In this context, they have a T-roof 8b or 9b ( 2 ) on. Furthermore, they have a T-stem 8c ( 5 ) on. T-roof 8b is snapped to snap geometry sections 25a and 25b. The same is achieved with the T-roof 9b with the corresponding snap geometry in the leadthrough 17.

In 5 is a perspective sectional view of the arrangement according to 2 shown.

In 6 is a perspective view of the arrangement according to 2 shown, the top portion of the mounting part 14 being viewed here and the snapped state of the holding element 8 with the snap geometry sections 25a and 25b being visible.

Reference List

1

domestic refrigeration appliance

2

Housing

2a

Side wall

3

recording room

4

door

5

light source module

6

inner container

6a, 6b, 6c

walls

7

inside

8th

holding element

8a

snap area

8b

T roof

8c

T trunk

9

holding element

9a

snap area

9d

T roof

10

recess

11

recess

12

recess

13

recess

14

assembly part

15

outside

16

execution

17

implementation 18

19

L leg

19a

outside

20

L leg

21

wall area

22

wall area

23

insertion area

24

holding area

25

snap geometry

25a, 25b

snap geometry section

e 26

snap elements

x

latitude direction

y

height direction

A

longitudinal axis

QUOTES INCLUDED IN DESCRIPTION

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

Patent Literature Cited

• DE 102016202567 A1 [0002]

Claims (15)

Domestic refrigeration appliance (1) with an inner container (6) which, with walls (6a, 6b, 6c), delimits a receiving space (3) for food in the domestic refrigeration appliance (1), at least one wall (6a, 6b, 6c) having at least one recess ( 10, 11, 12, 13), on which a light source module (5) of the household refrigeration appliance (1) is arranged, wherein the light source module (5) has at least one holding element (8, 9) which is held by the recess (10 to 13), characterized in that the household refrigerating appliance (1) has an additional, separate mounting part (14) which is arranged on the outside (15) of the wall (6a, 6b, 6c) facing away from the receiving space (3), the Holding element (8, 9) for holding the light source module (5) is coupled to the mounting part (14). Household refrigeration appliance (1) according to claim 1 , characterized in that the mounting part (14) has a snap geometry (25) with which the holding element (8, 9) is snapped for holding. Household refrigeration appliance (1) according to claim 2 , characterized in that the snapping geometry (25) is a multi-stage snapping which has at least two discrete snapping stages with which the holding element (8, 9) can snap. Household refrigeration appliance (1) according to claim 2 or 3 , characterized in that the snap geometry (25) is a snap step which has snap steps (26) which are arranged at different distances from the outside (15) of the inner container (6). Household refrigerating appliance (1) according to one of the preceding claims 2 until 4 , characterized in that the snap geometry (25) has at least one passage (16, 17) through which the holding element (8, 9) extends so that it extends in the direction of a hole axis (B) of the passage (16, 17) on both sides of the passage (16, 17), the holding element (8, 9) being snapped onto the outside (19) of the mounting part (14) facing away from the outside (15) of the wall (6a, 6b, 6c). Household refrigeration appliance (1) according to claim 5 , characterized in that the passage (16, 17) has a wide insertion area (23) for inserting the retaining element (8, 9) and has a narrower retaining area (24) adjoining the insertion area (23), the snap geometry (25 ), In particular only, is arranged laterally to the holding area (24) on the mounting part (14). Household refrigerating appliance (1) according to one of the preceding claims 2 until 6 , characterized in that the mounting part (14) with the snap geometry (25) is manufactured as one piece. Household refrigerating appliance (1) according to one of the preceding claims, characterized in that the holding element (8, 9) is a T-shaped snap element. Household refrigerating appliance (1) according to one of the preceding Claims 5 until 7 and after claim 8 , characterized in that a T-roof (8b) of the T-shaped snap element on both sides for implementation (16, 17) on the wall (6a, 6b, 6c) facing away from the outside (19a) of the mounting part (14) with the Snap geometry (25), in particular separate snap geometry sections (25a, 25b), is snapped. Household refrigerating appliance (1) according to one of the preceding claims, characterized in that the mounting part (14) is an elongate rail. Household refrigerating appliance (1) according to one of the preceding claims, characterized in that the mounting part (14) is angled, in particular having an L-shape in cross section. Household refrigeration appliance (1) according to claim 11 , characterized in that the mounting part (14) with a first L-leg (19) on a first outer side of a first wall area (21) of the wall (6a, 6b, 6c) is arranged adjacent, and the mounting part (14) with a second L-leg (20) is arranged adjacent to a second outer side of a second wall area (22) of the wall (6a, 6b, 6c), the first wall area (21) and the second wall area (22) being arranged at an angle to one another. Household refrigerating appliance (1) according to one of the preceding claims, characterized in that the mounting part (14) is made of metal or plastic. Household refrigerating appliance (1) according to one of the preceding claims, characterized in that the light source module (5) is a rail and/or has light-emitting diodes as light sources. Method for mounting a light source module (5) on an inner container (6) of a household refrigeration appliance (1), in which the light source module (5) is provided with at least one holding element (8, 9) is guided through a recess (10 to 13) in the wall (6a, 6b, 6c) of the inner container (6) and engages through a passage (16, 17) in a separate assembly part (14) which on an outside (15) the wall (6a, 6b, 6c) is arranged, with further monthly movement of the light source module (5), the light source module (5) is moved relative to the mounting part (14) and then the holding element (8, 9) with a snap geometry (25) is snapped onto the mounting part (14).

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