EP2342493B1 - Assembly of lamp socket and lamp base - Google Patents

Description

The invention relates to a lamp holder for holding a light source provided with an LED, according to the preamble of claim 1, claim 3 or claim 4.

A comparable combination of lamp base and lamp socket is off DE 10 2007 041 126 A1 known. The lamp base there can be fixed by means of a bayonet-type locking in a socket housing. Laterally projecting socket contacts engage in recess on the recess side. A heat sink in the socket bottom is used to dissipate the heat generated during operation of an LED.

Out DE 42 43 175 A1 is a lighting device known in particular for vehicles. However, this has neither a socket-side heat sink, nor a socket-side heat-conducting. Also missing is a device by means of which a pressure force between a socket and a socket is generated.

A source stone light is off DE 20 2007 012 249 U1 known. This also has neither a socket-side heat sink, nor a socket-side heat-conducting. Also missing is a device by means of which a pressure force between a socket and a socket is generated.

Furthermore, comparable lampholders are known from the prior art document which can not be assigned by reference. They are usually based on the design of compact fluorescent lamp sockets and - lamp sockets, in which the lamp base is inserted into the socket and fixed in a bayonet by a rotary motion. In contrast to fluorescent tubes, these types of construction are referred to as so-called "one-sided" socketed systems. By the rotation In addition, socket and socket contacts are connected together and the lamp is electrically contacted. This locking principle is also known as a twist-lock system. However, lamp holders, in particular for light sources provided with LEDs, are also known from another prior art document which can not be documented, in which case the socket is inserted parallel to the surface of a heat sink, whereby this process also involves the electrical contacting.

In the prior art, it has hitherto been the task of lamp socket and lamp socket to hold the lamp mechanically and to contact electrically.

The lifetime of LED-based bulbs, however, depends crucially on an optimal dissipation of the heat generated during operation of the LED. LEDs are particularly sensitive to temperature. In this respect, generic lamp sockets have a heat-conducting element which comes into contact with a socket-side heat sink. It has been recognized that a certain system pressure between the heat-conducting element and the heat sink positively influences the heat transfer. In this respect, frames and sockets for a light source provided with at least one LED are distinguished by the fact that, in addition to the mechanical support and the electrical contact, the best possible heat dissipation must be ensured. In that regard, the socket and socket for LED bulbs differ significantly in terms of structural and design requirements of their counterparts for compact fluorescent lamps.

In arrangements of lamp socket and lamp cap of the prior art, it has been found that the system pressure between socket-side heat conduction and frontside heatsink is not set as a measure of the quality of the heat transfer. Despite a corresponding existing system pressure, premature signs of aging of the LED were seen in different versions. Studies carried out have shown that the most uniform possible distribution of the system pressure over the mutual contact surfaces of the heat conducting element and the heat sink is decisive for the quality of the heat transfer.

The object of the invention is to provide a lamp socket and a lamp cap, which ensure a uniformly distributed system pressure on the mutual contact surface of the heat conducting element and heat sink.

The object of the invention is achieved by a lamp holder and a lamp base with the features of claim 1, claim 3 or claim 4, in particular with their characterizing features.

The invention makes use of the knowledge that even small force components, which are directed counter to the contact pressure ensuring the contact pressure, considerably change the pressure distribution. On this basis, the invention avoids the skillful training of socket and socket contacts or their storage in the socket housing or on the lamp socket electrical contact, in which the contact forces are directed against the pressing force. Furthermore, a socket-side heat-conducting element is provided in addition to the socket-side heat sink, which is connected to the LED. A device for ensuring a defined system pressure between the heat-conducting element and heat sink ensures optimal heat transfer from the socket to the socket.

One solution is characterized in that the socket contacts as projecting from the base in the direction of the heat sink contacts, in particular are formed as contact pins, wherein the contact force between the socket contacts and the socket contacts is directed transversely to the effective direction of the pressing force.

In addition thereto, it can be provided that the socket contacts are designed as contact clips which hold the socket contacts, in particular the contact pins between two contact legs. It is particularly advantageous that the socket contacts between them receiving contact clips ensure a secure electrical contact.

Another solution is characterized in that the base contacts as laterally projecting from the base circumference, in particular transversely oriented to the effective direction of the pressure force contacts, such as flat blade contacts, and the contact forces between the socket contacts and the socket contacts are the same direction to the pressing force. Assuming a uniform distribution of the flat blade contacts with regard to the base circumference, a uniform contact pressure of the mutual contact surfaces of the heat-conducting element and the heat sink is not adversely affected by this embodiment.

However, it is also conceivable to provide a contact arrangement in which contact forces occur, which are directed against the effective direction of the pressing force, without these negative impact forces have on the contact pressure between heat conducting and heat sink with respect to the effective direction of the pressing force. Such an embodiment is characterized in that the socket contacts are formed as a contact clip, which receive the socket contacts, in particular the flat blade contacts between them and the contact forces of the socket contacts receiving between them contact legs are opposite to each other and parallel to the action Pressure force are aligned, wherein the socket contacts are mounted parallel to the effective direction of the pressing force floating in the socket housing and / or the socket contacts are mounted parallel to the effective direction of the pressing force floating in the lamp base.

Another solution provides that the socket or socket-side contact fields are formed, which bear against socket or socket contacts, wherein the contact forces are directed transversely to the effective direction of the pressing force.

Further advantages of the invention can be found in the following description of some embodiments of the invention and in non-cited subclaims.

Fig. 1:

Eine Explosionsansicht von erfindungsgemäßer Lampenfassung und erfindungsgemäßem Lampensockel,

Fig. 2:

Eine Darstellung gemäß Fig. 1 mit vertikal in der Ebene der Sockelkontakte geschnittenem Fassungsgehäuse,

Fig. 3:

Eine Detailansicht gemäß Ausschnittskreis III in Fig. 2,

Fig. 4:

Eine Darstellung gemäß Fig. 2 unter Verzicht auf das Fassungsgehäuse,

Fig. 5:

Eine Detailansicht gemäß Ausschnittskreis V in Fig. 4,

Fig. 6:

Eine Darstellung gemäß Fig. 2 in Seitenansicht,

Fig. 7:

Eine Detailansicht gemäß Ausschnittskreis VII in Fig. 6,

Fig. 8:

Die Darstellung einer zweiten Ausführungsform der Erfindung in perspektivischer Ansicht mit in der Ebene der Fassungskontakte vertikal geschnittenem Fassungsgehäuse,

Fig. 9:

Eine Detailansicht gemäß Ausschnittskreis IX in Fig. 8,

Fig. 10:

Eine Darstellung gemäß Fig. 8 unter Verzicht auf das Fassungsgehäuse,

Fig. 11:

Eine Detailansicht gemäß Ausschnittskreis XI in Fig. 10,

Fig. 12:

Eine weitere Ausführungsform der Erfindung in perspektivischer Ansicht und Darstellung des Fassungsgehäuses im Vertikalschnitt entlang einer durch die Fassungskontakte gehenden Schnittebene,

Fig. 13:

Eine Detailansicht gemäß Ausschnittskreis XIII in Fig. 12,

Fig. 14:

Eine Darstellung gemäß Fig. 12 unter Verzicht auf das Fassungsgehäuse,

Fig. 15:

Eine Detailansicht gemäß Ausschnittskreis XV in Fig. 14,

Fig. 16:

Die Darstellung einer weiteren Ausführungsform der Erfindung in perspektivischer Ansicht mit in der Ebene der Fassungskontakte vertikal geschnittenem Fassungsgehäuse,

Fig. 17:

Eine Detailansicht gemäß Ausschnittskreis XVII in Fig. 16,

Fig. 18:

Eine Darstellung gemäß Fig. 16 unter Verzicht auf das Fassungsgehäuse,

Fig. 19:

Eine Detailansicht gemäß Ausschnittskreis IXX in Fig. 18,

Fig. 20 bis 23

Schematische Ansichten weiterer Ausführungsformen der Erfindung unter Darstellung der Kraftwirkungsrichtungen.

Show it:

Fig. 1:

An exploded view of inventive lamp socket and lamp socket according to the invention,

Fig. 2:

A representation according to Fig. 1 with socket housing cut vertically in the plane of the socket contacts,

3:

A detailed view according to section circle III in Fig. 2 .

4:

A representation according to Fig. 2 waiving the socket housing,

Fig. 5:

A detailed view according to section circle V in Fig. 4 .

Fig. 6:

A representation according to Fig. 2 in side view,

Fig. 7:

A detailed view according to section circle VII in Fig. 6 .

Fig. 8:

The representation of a second embodiment of the invention in a perspective view with in the plane of the socket contacts vertically cut socket housing,

Fig. 9:

A detailed view according to section circle IX in Fig. 8 .

Fig. 10:

A representation according to Fig. 8 waiving the socket housing,

Fig. 11:

A detailed view according to section circle XI in Fig. 10 .

Fig. 12:

A further embodiment of the invention in a perspective view and representation of the socket housing in a vertical section along a cutting plane passing through the socket contacts,

Fig. 13:

A detailed view according to section circle XIII in Fig. 12 .

Fig. 14:

A representation according to Fig. 12 waiving the socket housing,

Fig. 15:

A detailed view according to section circle XV in Fig. 14 .

Fig. 16:

The representation of a further embodiment of the invention in a perspective view with in the plane of the socket contacts vertically cut socket housing,

Fig. 17:

A detailed view according to section circle XVII in Fig. 16 .

Fig. 18:

A representation according to Fig. 16 waiving the socket housing,

Fig. 19:

A detailed view according to section circle IXX in Fig. 18 .

Fig. 20 to 23

Schematic views of other embodiments of the invention showing the force action directions.

For technically equivalent or identical components are in the Fig. 1 to 19 the same reference numerals used.

In the figures, an arrangement of lamp socket and lamp base is generally designated by the reference numeral 10.

Shown is the lamp holder 11, which initially has a heat sink 12, on which a socket housing 13 is arranged, which carries socket contacts 14. This heat sink can also be an integral part of, for example, a light housing.

The socket housing 13 facing surface of the heat sink 12 is flat, on its the socket housing 13 opposite bottom forms of the heat sink 12 for surface enlargement and better heat dissipation, a plurality of cooling fins 15.

The socket housing 13 has a base receptacle 16, which is formed in the present embodiment as a central, circular recess. The lamp base 17 initially carries a leading away from the heat sink optics 18, within which in the transition region of lamp cap 17 and optics 18, one or more LEDs are arranged. In the exemplary embodiment, the lamp cap 17 is contour-congruent with the base receptacle 16 and consequently has a circular-cylindrical shape. Radially protruding from the lamp cap 17 retaining cam 19 dive in inserts of the lamp cap 17 in the socket housing 13 through locking grooves 20 and engage behind the manner of a bayonet-like locking appropriately designed wall sections of the socket housing 13. The base 17 has in the first embodiment according to the FIGS. 1 to 7 radially projecting socket contacts 21 in the form of contact pins 22. When the lamp base 17 is rotated in the locking direction V and on reaching the end stop with respect to the bayonet-type locking, the contact pins 22 engage the socket contacts 14 ,

In the arrangement 10 of lamp holder 11 and lamp base 17, the lamp holder 11 is considered as the lower part and the lamp cap 17 as the upper part.

Like that FIGS. 1 to 7 can be seen, the socket contact 14 is formed as a contact clip 24 with two opposing and mutually prestressed contact legs 25.

In Fig. 2 the arrangement 10 of the lamp holder 11 and the lamp base 17 is shown once more in its entirety, wherein the socket housing 13 cut vertically in a plane spanned along the socket contacts 14 enables an insight into the contacting.

The lamp base 17 carries an unspecified here heat conducting element, which is partly with the LED and - in arrangement in the version 11 - anderenteils with the heat sink 12 in contact. In this way, the heat generated during operation of the LED light is led away from the bulb and discharged through the heat sink 12 to the environment. For this purpose, it is necessary that the mutual contact surfaces of heat sink 12 and base-side heat-conducting element abut each other under a certain minimum system pressure. This is ensured by means of a pressing force, which is generated by a device, not shown. As a rule, these are spring elements which clamp the lamp holder 11 and the lamp cap 17 against each other. Ensures the system pressure - possibly with additional mediation of the heat transfer promoting agents, such as heat conducting or thermal grease - the full-surface, uniform system of sockelseitigem heat conducting element and heat sink 12 and as a result, an optimal heat transfer.

In order to avoid disturbing influences on the system pressure or its uniform distribution by the electrical contacting of socket and socket contacts, the invention proposes solutions with the embodiments described below, in particular with the described contact formation and arrangement.

The in the FIGS. 1 to 7 The contact forces of the contact legs 25 act here - the longitudinal center axis M taken by the assembly 10 as a measure - axially, ie both in, as well as against the Effective direction of the pressure force. This is especially clear FIGS. 3 to 5 refer to. In such a contact is basically the risk that the pressure force counteracting force component of the lower contact leg 25 affects the system pressure negative, so reduced. To avoid this, the socket contact 14 in its contact chamber 26 axially - ie parallel to the central axis M - movably mounted. As a result, the socket contact 14 in the first embodiment may be in accordance with FIGS. 1 to 7 in the axial direction, ie not parallel to the effective direction of the pressing force, not supported on the socket housing 13. A directed by in particular the lower contact leg 25 against the direction of action of the pressing force counterforce can not be applied. This the pressure force between the lamp socket 11 and lamp cap 17 opposing force component can serve as a result, only the secure contact between socket contact 14 and pin 22, but not negatively affect the system pressure between the heat sink 12 and sockelseitigem heat conducting. The game of the socket contact 14 in its contact chamber 26 is dimensioned such that any axial dimensional tolerances may occur on socket 11 and socket 17 are powerless bridged / compensated.

A second advantageous embodiment of the invention is in the FIGS. 8 to 11 shown. The socket contacts 14 are formed here as approximately V-shaped contacts and lie in the vertical direction, ie in the direction of the vertical center axis M backlash in the formed by the socket housing 13 contact chamber 26 a. The lamp base 17 forms radially outwardly facing contact fields 27, which come after insertion of the lamp cap 17 in the lamp holder 11 and move in the locking direction V on the V-shaped socket contact 14 to rest. A spring leg 28 of the V-shaped socket contact is for electrical contacting on the contact pad 27. The contact forces exerted by the spring leg 28 are directed essentially in the radial direction to the lamp cap 17 or transversely to the vertical center axis M or transversely to the effective direction of the pressure force. A negative influence on the system pressure between socket-side heat conducting element and heat sink 12 therefore does not exist.

A third embodiment of the invention is in the FIGS. 12 to 15 shown. This is a lamp cap 17, which forms radially projecting flat blade contacts 29, which in turn are formed by socket contacts 14 in the form of contact clips 24 with counteracting contact legs 25. Insofar, here too, that applies to the FIGS. 1 to 7 said, in particular, the socket 14 is mounted floating in the contact chamber 26 parallel to the vertical center axis M or parallel to the effective direction of the pressing force.

Another embodiment of the invention show the FIGS. 16 to 19 , These show a lamp base 17 with flat blade contacts, which protrude first with a partial section radially out of the base, but in a direction of the cooling body 12 by 90 ° angled and thus parallel to the vertical center axis and the effective direction of the Pressure force directed end portion pass. Due to the arrangement of the end portion of the flat blade contact 29, the contact forces between the contact legs 25 and between them angled end portion of the flat blade contact 29 are transverse to the vertical center axis M and thus directed transversely to the effective direction of the pressing force between base-side heat conducting element and heat sink 12. In this respect, the contact forces take no influence on the system pressure or its uniform distribution between the heat sink 12 and socket-side heat conduction.

In the following, the invention is also based on the FIGS. 20 to 23 explained in more detail. For the embodiments according to FIGS. 20 to 23 the same reference numerals are used for identical or technically equivalent components. The arrow directions indicate the effective direction of the respective forces.

Shown is a total provided with the reference numeral 40 arrangement of lamp socket and lamp base. The lamp socket 42 includes a heat sink 43, a not shown socket housing and socket contacts 44th

The lamp base, designated overall by the reference numeral 41, comprises a base housing 45, to whose bottom side 46 facing the heat sink 43 a heat-conducting element 47 is arranged. The heat-conducting element 47 rests on the heat sink 43-possibly with the intermediation of a thermal paste or heat-conducting foil-under a certain system pressure F _A. The system pressure F _A is generated by a device, not shown, which may contain, for example spring elements, the lamp base 41 with the heat sink 43rd tense. In the embodiments according to FIGS. 20 to 23 corresponds to the direction of force direction of the arrow. The force thus acts on the lamp cap 41 and presses it in the direction of the heat sink 43 and is directed in the concrete embodiment vertically to the lamp base 41 facing the heat sink top 48. Other embodiments are conceivable. In particular, the force acting direction can also contrary to the representation in the FIGS. 20 to 23 be directed, which represents only a reversal of the invention described in the following principle. The system pressure between heat sink 43 and heat-conducting element 47 is distributed uniformly over the mutual contact surface.

The uniform system pressure generated by the contact force F _A between the heat-conducting element 47 and the heat sink 43 ensures an optimum transition of the heat generated by the LED 49 during operation. For this purpose, the LED is in contact with the heat-conducting element 47 carried by the base housing 45.

The essential principle of the invention is to form the contact between the socket contacts 44 and the socket contacts 50 by a skilled contact training and / or a suitably skilled contact storage in the lamp base 41 and in the lamp holder 42 in terms of the pressing force F _A gegenkraftfreier way. This means that the contact forces F _K between the base contacts 50 carried by the lamp base and the socket contacts 44, which ensure a secure power supply to the LED, do not form a force component acting against the pressing force F _A.

In FIG. 20 is a contact assembly of socket contact 44 and socket contact 50, in which the socket contact is formed as a contact pin 51 and the socket contact as a contact terminal 52. The contact terminal 52 comprises two mutually facing contact legs 53 which receive the contact pin 51 between them.

The base contact 50 is directed parallel to the effective direction of the pressing force F _A toward the heat sink 43, in the same orientation, the contact legs 53 of the socket contact 44 are arranged. The contact forces F _K act essentially transversely to the pressing force F _A.

An alternative embodiment is in FIG. 21 shown. The local base housing 45 is externally equipped with a socket contact 50 in the form of a contact pad 54. The socket contact 44, in the form of a spring leg 55 biased in the direction of the base housing 45, rests against the contact pad 54 through the intermediary of a contact force F _K directed transversely to the pressing force F _A. Also, this embodiment ensures a respect to the pressing force F _A counterforce-free electrical contact.

In the FIG. 22 illustrated embodiment of the invention has a further, extremely advantageous arrangement of socket contacts 44 and socket contacts 50.

The socket contacts 50 project relative to the peripheral surface of the base housing 45, so are radially aligned. In concrete terms, these are flat blade contacts 56. These flat blade contacts 46 oriented transversely to the effective direction of the pressing force F _A are contacted by the socket contacts 44 on their upper side, that is to say the side facing away from the heat sink 43. As a result, the effective direction of the contact forces F _{K is} identical to the effective direction of the pressing force F _A. In this embodiment, the contact forces F _K consequently increase the contact pressure between the heat-conducting element 47 and the heat sink 43, provided that the flat blade contacts 46 are uniformly circumferentially spaced.

A final embodiment of the invention shows FIG. 23 , Again, the socket contacts 50 are in turn as circumferentially projecting or radial directed flat blade contacts 56 are formed. The socket contacts, on the other hand, are designed as contact terminals, whose contact legs 53 rest on the flat blade contacts 56 on opposite sides and, in particular, contact them electrically at least on one side. In the embodiment, a first contact leg 53, as already in FIG. 22 , on the upper side facing away from the heat sink 43 of the flat blade contact 56, the second contact leg 53 is located on the opposite and directed to the heat sink 43 underside of the flat blade contact. This contact arrangement has great advantages in terms of contact reliability due to the two-sided contact of the legs 53 on the flat blade contact 56, which incidentally also to the embodiment of FIG. 20 hold true.

Again FIG. 23 can be seen, the contact forces between the flat blade contact 56 and the lower, the heat sink 43 adjacent contact legs 53 act against the pressing force F _A. In principle, this force component is therefore suitable to act against the pressure force F _A and to reduce the important for the heat transfer system pressure between the heat sink 43 and heat conducting element 47 in a disadvantageous manner. To avoid this, the socket contact 44 is mounted movable parallel to the effective direction of the pressing force F _A in the socket housing, not shown. As a result, the force direction of the pressing force F _A opposing force component can not develop their effect.

In summary, the invention shows various contact formations and contact arrangements of the socket and socket contacts 44/50/14/21, the contact forces F _{K act} in terms of the pressing force F _A gegenkraftfreier way. This is achieved in particular by arranging the contacts in such a way that the contact forces are mainly aligned transversely or in the effective direction of the pressure force. In contrast, the contact arrangement includes one opposite Direction of action of the pressure force directed contact force component, the contacts of lamp holder 42/11 and / or lamp base 41/17 are to be stored decoupled. Then this force component can not develop its counteracting effect on the pressure force F _A.

LIST OF REFERENCE NUMBERS

10

Arrangement of lamp socket and lamp base

11

lamp socket

12

heatsink

13

socket housing

14

socket contact

15

cooling fins

16

base housing

17

lamp base

18

optics

19

holding cams

20

Locking groove of 13

21

socket Contact

22

pin

23

Insertion groove of 13

24

contact clip

25

Contact leg of 24

26

contact chamber

27

Contact field

28

spring leg

29

Flat blade contact

40

Arrangement of lamp socket and lamp base

41

lamp base

42

lamp socket

43

heatsink

44

holder contacts

45

housings

46

Bottom of 45

47

thermally conductive element

48

top

49

LED

50

socket Contact

51

pin

52

contact terminal

53

contact legs

54

Contact field of 45

55

Spring leg of 44

56

Flat blade contacts

F _A

pressure force

F _K

contact forces

M

vertical central axis of 10

V

locking direction

Claims (4)

1. A lamp socket (11/42) for holding a light source provided with an LED (49), having a cooling element (12/ 43) and having a socket housing which holds socket contacts (14/44) for the electrical connection of the light source, and a lamp base (17/41) which supports an LED (49), is insertable into the socket housing (13) and has base contacts (50/21) which can be electrically contacted by the socket contacts (14/44) through a contact force (F_K) for the purpose of supplying power to the LED (49), wherein the electrical contact between the socket contacts (14/44) and the base contacts (50/21) is effected by developing a contact and/or supporting a contact in a manner which does not produce forces opposing the pressure force (F_A), characterised in that the lamp base (17/41) supports a heat-conducting element (47) to which the LED (49) is connected, in that the base-side cooling element (12/43) is in communication with the socket-side heat-conducting element (47) - possibly through a medium which promotes the heat transfer, such as a heat-conducting foil or heat-conducting paste - with a contact pressure which aids the heat transfer and is ensured by a pressure force (F_A) generated by a suitable device in order to absorb the heat produced during operation of the LED (49), and in that the base contacts (50/21) are constructed as contacts, in particular as contact pins (51), projecting out of the base (17/41) in the direction of the cooling element (12/43), wherein the contact force (F_K) between the socket contacts (14/44) and the base contacts (50/21) is directed transversely to the effective direction of the pressure force (F_A).
2. A lamp socket and lamp base according to Claim 1, characterised in that the socket contacts (14/44) are constructed as contact clips (24/52) which hold the base contacts (50/21), in particular the contact pins (51), between two contact limbs.
3. A lamp socket (11/42) for holding a light source provided with an LED (49), having a cooling element (12/ 43) and having a socket housing (13) which holds socket contacts (14/44) for the electrical connection of the light source,
   and a lamp base (17/41) which supports an LED (49), is insertable into the socket housing (13) and has base contacts (50/21) which can be electrically contacted by the socket contacts (14/44) through a contact force (F_K) for the purpose of supplying power to the LED (49), wherein the electrical contact between the socket contacts (14/44) and the base contacts (50/21) is effected by developing a contact and/or supporting a contact in a manner which does not produce forces opposing the pressure force (F_A), characterised in that the lamp base (17/41) supports a heat-conducting element (47) to which the LED (49) is connected, in that the socket-side cooling element (12/43) is in communication with the base-side heat-conducting element (47) - possibly through a medium which promotes the heat transfer, such as a heat-conducting foil or heat-conducting paste - with a contact pressure which aids the heat transfer and is ensured by a pressure force (F_A) generated by a suitable device in order to absorb the heat produced during operation of the LED (49), and in that the base contacts (50/21) are constructed as contacts, such as flat blade contacts (29/56), which protrude laterally from the circumference of the base and are oriented in particular transversely to the effective direction of the pressure force (F_A), and the contact forces (F_K) between the socket contacts (14/44) and the base contacts (50/21) have the same effective direction as the pressure force (F_A), wherein the socket contacts (14/44) are constructed as contact clips (24/52) which receive the base contacts (50/21), in particular the flat blade contacts (14/44), between them and the contact forces (F_K) of the contact limbs (25/53) receiving the base contacts (50/21) between them are opposed to one another and aligned with their effective direction parallel to the pressure force (F_A), wherein the socket contacts (14/44) are supported in floating manner in the socket housing (13), parallel to the effective direction of the pressure force (F_A), and/or the base contacts (50/21) are supported in floating manner in the lamp base (50/21), parallel to the effective direction of the pressure force (F_A).
4. A lamp socket (11/42) for holding a light source provided with an LED (49), having a cooling element (12/ 43) and having a socket housing (13) which holds socket contacts (14/44) for the electrical connection of the light source,
   and a lamp base (17/41) which supports an LED (49), is insertable into the socket housing (13) and has base contacts (50/21) which can be electrically contacted by the socket contacts (14/44) through a contact force (F_K) for the purpose of supplying power to the LED (49),
   wherein the electrical contact between the socket contacts (14/44) and the base contacts (50/21) is effected by developing a contact and/or supporting a contact in a manner which does not produce forces opposing the pressure force (F_A), characterised in that the lamp base (17/41) supports a heat-conducting element (47) to which the LED (49) is connected, in that the socket-side cooling element (12/43) is in communication with the base-side heat-conducting element (47) - possibly through a medium which promotes the heat transfer, such as a heat-conducting foil or heat-conducting paste - with a contact pressure which aids the heat transfer and is ensured by a pressure force (F_A) generated by a suitable device in order to absorb the heat produced during operation of the LED (49), and in that socket-side or base-side contact fields (27/54) are produced to which base or socket contacts (50/21/14/44) are applied, wherein the contact forces (F_K) are directed transversely to the effective direction of the pressure force (F_A).

Images