SE543904C2

SE543904C2 - Light fitting

Info

Publication number: SE543904C2
Application number: SE1850666A
Authority: SE
Inventors: Thea Svensson
Original assignee: Ikea Supply Ag
Priority date: 2018-06-01
Filing date: 2018-06-01
Publication date: 2021-09-21
Also published as: SE1850666A1; WO2019231388A1; EP3803202A1; CN112204304A; EP3803202A4

Abstract

A light fitting (10, 20) for attaching a pendant lamp (30, 40) to a ceiling, said light fitting (10) comprising a first member (11, 21) attachable to the ceiling and a second member (12, 22) having a first end (121, 221) being connected to the first member (11, 21) and a second end (122, 222) being connected, directly or indirectly, to the pendant lamp (30, 40).

Description

LIGHT FITTING Technical Field The present invention relates to the technical field of light fittings and to lampsin general. More specifically, the present invention relates to a light f1tting for attachinga lamp to a ceiling, to a lamp comprising such a light f1tting and to a method for attaching a light f1tting to a ceiling.

Prior Art Light fittings are well known products used for instance for attaching lamps toceilings. They usually comprise both electrical connections as well as some sort ofmeans for supporting the weight of the lamp, which in some cases is the electrical cordand in some cases is a separate wire or similar. As light fittings are often visiblymounted to a ceiling, they are preferably designed to be aesthetically pleasing and theymay for this reason comprise covers or ceiling roses which cover the interiorcomponents of the light fitting.

Light fittings which are conf1gured to attach a lamp to a ceiling may beconfigured to be attached to the ceiling in a number of ways. Commonly used methodsinclude screws and hooks which are pre-mounted to the ceiling, to name a few. It is acommon problem when mounting pendant lamps that it is difficult to achieve a desiredhanging height of the lamp, as this often requires the person hanging the lamp having totediously adjust the length of the cord/wire which attaches the lamp to the light fitting.Access to the intemal components of the light fitting such as the electrical connectorsand/or the means for hanging the light f1tting may also be limited.

In view of the above, it is therefore desired to provide a light fitting whichalleviates some of the problems with prior art solutions and a lamp comprising such alight f1tting.

SummagvIt is therefore an object of the invention to at least partly overcome one or more of the above-identified limitations of the prior art. In particular, it is an object to providea light f1tting for attaching a pendant lamp to a ceiling, a lamp comprising such a lightf1tting and a method for mounting a light f1tting to a ceiling.

In a first aspect, a light f1tting for attaching a pendant lamp to a ceiling is provided. The light f1tting comprises a first member attachable to the ceiling and a second member. A first end of said second member is connected to the first member anda second end is connected directly or indirectly to the lamp, such that the second endprotrudes outside, or out of, the first member in a direction towards the pendant lamp.The length of the part of the second member protruding outside the first member isadjustable. In some embodiments the hanging height of the lamp is thus convenientlyadjustable by altering the second member protrusion length. In other embodiments,adjustment of the length of the part of the second member protruding outside the firstmember allows for easy access when mounting the lamp.

In one embodiment, the light fitting further comprises a housing memberconfigured to at least partly cover the first member. The housing member comprising afirst hole through which the second member extends. The adjustable degree ofprotrusion of the second member facilitates mounting of the housing member as well assimplifies access to the parts of the light fitting that are configured to be covered by thehousing member.

The first hole of the housing member may be configured to be essentiallyaxially aligned with the first member.

The first member may comprise a thread and the light fitting further comprisesa nut through which the second member extends and which is configured to engage withthe thread of the first member.

In one embodiment, the nut is axially moveable relative the second memberand rotatable in relation to the light fitting. The nut may comprise a ﬂange configured tovertically support the housing member. As the second member is moveable in relationto the nut and the housing member that the nut supports, access during mounting isimproved even when the housing member is mounted to the light fitting.

In one embodiment, the second member is a wire.

Furthermore, the first member may be provided with a lock member configuredto allow unrestricted movement of the wire in a direction towards the first member andto restrict movement of the wire in a direction away from the first member. A safeadjustability of the degree of wire protrusion is thus provided. Unwanted extension ofthe wire is avoided, as the lock member must be actively released, e. g. by depressing alock release member, for extension to occur.

In one embodiment, the lock member is arranged concentrically around thewire.

In one embodiment, the second member is an elongated hook.

The hook may be configured to, in a first rotational position in relation to thefirst member, allow for a first extension of the hook out of the first member and in asecond rotational position in relation to the first member allow for a second extension ofthe hook outside, or out of, the first member. The first extension is larger, or longer,than the second extension. The degree of hook protrusion is thus deterrnined by therotational position of the hook in relation to the first member.

In one embodiment, the first rotational position and the second rotationalpositions are offset by approximately 90° in relation to each other.

In yet another embodiment, the hook at its first end comprises a pin protrudingfrom at least one side of the hook in a direction essentially perpendicular to theextension of the hook. In an embodiment, the pin is arranged diametrically trough thehook. The pin may be configured to be vertically moveable in at least one vertical slitprovided in the first member. The slit is limited by a slit stop arranged in a first end ofthe slit and defining the length of the first extension of the hook. The pin can be rotatedin one or more recesses arranged in a second end of the slit to engage With a shelfarranged in the second end of the slit, the shelf defining the length of the secondextension of the hook.

Each shelf may comprise a shelf stop that requires the hook to be furtherinserted into the first member to allow rotation into and out of the first rotationalposition.

In a second aspect, a lamp is provided for attachment to a ceiling, the lampcomprising a light fitting of the first aspect.

In a third aspect, a method for mounting the light fitting of the first aspect to aceiling is provided. The method comprising the steps of: attaching he first member ofthe light fitting to the ceiling and adjusting the length of a part of the second memberprotruding out of the first member. The hanging height of the lamp attached to the lightfitting can thereby be altered after it is mounted to the ceiling. Naturally, the protrusionmay also be altered When the light fitting is not yet mounted to the ceiling.

In an embodiment of the invention, the method for mounting the lampcomprises the steps of: adjusting the length of a part of the second member protrudingout of the first member to facilitate access to the first member, attaching the firstmember of the light fitting to the ceiling, attaching the nut to the first member andthereby attaching the housing member to the first member and adjusting the length of apart of the second member protruding out of the first member to a desired length.

In yet another embodiment, the method for mounting the light fitting comprises the steps of: adjusting the length of a part of the wire protruding out of the first memberby unlocking the lock member to allow for an extension of the wire to a lengthfacilitating access to the first member, attaching the first member of the light fitting tothe ceiling, attaching the nut to the first member and thereby attaching the housingmember to the first member and adjusting the length of a part of the wire protruding outof the first member to a desired length by feeding the wire towards the first member.

In one embodiment, the method for mounting the light fitting comprises thesteps of: adjusting the length of a part of the hook protruding out of the first member byrotating the hook to the first rotational position to allow for an extension of the hook toa length facilitating access to the first member, attaching the first member of the lightfitting to the ceiling, attaching the nut to the first member and thereby attaching thehousing member to the first member and adjusting the length of a part of the hookprotruding out of the first member to a desired length by feeding the hook towards the first member and the rotating it into the second rotational position.

Brief Description of the Drawings The present invention will be described further below by way of example andwith reference to the enclosed drawings. In the drawings: Fig. 1 shows a pendant lamp according to one embodiment, Fig. 2 shows a pendant lamp according to one embodiment, Figs 3-5 show light fittings according to different embodiments, Figs 6 and 7 show adjustrnent of the protrusion of the second member of a lightfitting, Fig. 8 shows a cross-sectioned View of a light fitting according to oneembodiment, Fig. 9 shows a light fitting according to one embodiment, Fig. 10 shows a light fitting according to one embodiment, Fig. 11 shows a first member of a light fitting according to one embodiment, Figs. 12a-b show a hook of a light fitting according to one embodiment, Fig. 13 shows a pin for a hook of a light fitting according to one embodiment, Fig. 14 shows adjustment of the protrusion of a hook of a light fittingaccording to one embodiment, Figs 15-18 are schematic illustrations of methods for attaching the light fitting to a ceiling according to different embodiments.

Detailed Description of Embodiments With reference to Figs 1 and 2, two embodiments of pendant lamps 30, 40 areshown. The lamps 30, 40 are typically hanged from a ceiling by means of a firstmember 11, 21 (Fig. 3 and 9, respectively) of an associated light fitting 10, 20 which ismost often included when purchasing the lamp 30, 40. As the connections for attachingthe light fitting 10, 20 to the ceiling as well as the electrical connectors are often desiredto be hidden from view, a housing member 13, 23 (i.e. a ceiling rose) is often providedwhich covers these parts of the light fitting 10, 20.

The light fitting 10, 20 further comprises a second member 12, 22 that isconfigured to connect directly or indirectly to the lamp 30, 40. As is shown in Fig. 1, thesecond member 12 is a wire 12 which extends from the ceiling the entire way down tothe lamp 30. In Fig. 2, the second member 22 has the shape of an elongated hook 22.The lamp 40 then connects indirectly to the hook 22 via a chain 41.

Tuming to Fig. 3 the light ﬁtting 10 is shown without the housing member 13.The light fitting 10 comprises the first member 11 that serves as the part of the fitting 10that is attachable to the ceiling. In this case, a ceiling hook CH is attached to the ceilingand the first member 11 comprises a loop 114 that attaches to the hook CH. Othermeans for attaching the first member 11 to the ceiling are also conceivable.

A first end 121 of the second member 12, i.e. the wire 12, attaches to the firstmember 11 while a second end 122 of the second member 12, as mentioned earlier,attaches directly or indirectly to the lamp. The first member 11 further comprises a lockmember 111 in the shape of a wire lock 113, having a resilient button 111a which whendepressed allows the second member 12 to move both away from the first member 11,meaning downwards as illustrated in Fig. 3, as well as towards it, meaning upwards asillustrated in Fig. 3, by sliding through the lock member 111 and into the first member1 1.

When the lock member 111 is in a non-depressed state, the second member 12is still moveable but only in a direction towards the first member 11, i.e. upwards asillustrated in Fig. 3. This results in a solution where the person hanging a lamp using thelight fitting 10 described herein can simply extend the second member 12 fully whenhanging the lamp to the ceiling and then simply raise the lamp to a desired height whilefeeding the second member 12 into the first member 11. The first member 11 will thensupport the lamp at this new and desired height.

In Fig. 4, an embodiment of the light fitting 10 is shown where also the electrical wirings are shown and it is shown how a connection box 115 may attach to the first member 11. It is to be understood that the electrical wiring of the light fitting 10is not a central part of the inventive concept and may be achieved in a number of ways.For instance, electrical connectors may be integrated into the first member 11 or beprovided as a separate part, which is then attached to the first member 11 or hangedseparately from the ceiling.

The first member 11 shown in Figs. 3 and 4 further has a cylindrical body 116being provided with an extemal thread 112, the purpose of which becomes apparentwhen tuming to Fig. 5.

The first member 11 and a part of the second member 12 are covered by ahousing member 13. The housing member 13, sometimes called a ceiling rose, protectsthe other components of the light fitting 10 as well provides a more aestheticallypleasing appearance of the lamp as a whole. The housing member 13 is attached to thefirst member 11 by means of a nut 14, which is configured to engage with the thread112 of the first member 11 shown in Figs. 3 and 4. The nut 14 comprises a ﬂange 141,clearly shown in Fig. 8. The ﬂange 141 supports the housing member 13 vertically.Both the nut 14 and the housing member 13 comprises axially aligned holes 131 whichallow the second member 12 to move in relation to the nut 14 and the housing member13 and vice versa. This is important since, as is illustrated in Fig. 6, the length of a partof the second member 12 protruding out of the first member 11 is adjustable also whenthe lamp 30 is completely assembled and mounted to the ceiling. In case the lamp 30 isto be lowered then the resilient button 111a of the lock member 111 has to be depressed.

As is also shown in Fig. 6, the housing member 13 may comprises a secondhole 132 through which the electrical cord may extend.

In Fig. 7, the procedure for extending the length of a part of the secondmember 12 protruding out of the first member 11 is shown. As is already mentioned, toallow the second member 12 to protrude further out of the first member 11, the wirelock 113, forrning the lock member 111, must be maneuvered, in this case depressingthe resilient button 111a, meaning pushed upwards as shown in Fig. 7, to unlock thelock member 111, i.e. the wire lock, to make it possible to move the second member 12out of the first member 11, i.e. downwards as shown in Fig. 7, for a lowered position ofthe lamp.

In Fig. 8, the light fitting 10 is shown in a cross-sectioned view such that theintemal components of the first member 11 are visible. To achieve the adjustability ofthe protruding length of the second member 12, the first member 11 is provided with the lock member 111 in the form of a wire lock 113. The wire lock 113 is spring loaded and self-locking for withdrawing of the second member 12 out of the first member 11. Theresilient button 111a forms part of the wire lock 113 such that when depressed it pushesagainst the force of the spring and thereby releases the locking engagement of the wirelock 113 on the second member 12. The wire lock 113 is per se a conventional item thatis known to the person skilled in the art; it could be constructed in a plurality of ways toachieve the desired functionality. It should also be noted that another known type oflock member 111 may be arranged such that it is accessible even when the nut 14 andthe housing member 13 are attached to the first member 11. This allows the secondmember 12 to be extended out of the first member 11 also when the nut 14 and thehousing member 13 are attached, further simplifying adjustment of the height of thelamp 30.

Tuming now to Fig. 9 where another embodiment of the light fitting 20 isshown. The light fitting 20 of Fig. 9 comprises a first member 21 that is configured tobe attached to the ceiling. The following description of embodiments will focus mainlyon the features that differs from the embodiments described earlier as many features andfunctions are common for the embodiments. The light fitting 20 comprises a secondmember 22 in the form of an elongated hook 22. The second member 22 is attached tothe first member 21 such that the length of a part of the hook 22 protruding out of thefirst member 21 can be adjusted.

The first member 21 is provided with threads 212 that are configured to engagewith corresponding intemal threads of a nut 24. The purpose and function of the nut 24are the same as described for the previous embodiments and will thus not be describedin further detail.

In Fig. 10, the light fitting 20 is provided with a housing member 23. Thehousing member 23 comprises a first hole 231 into which the nut 24 fits to hold thehousing member 23 in place. A second hole 232 may also be provided, through whichan electrical cord may be inserted.

With simultaneous reference to Figs 11 to 14, the mechanism will be describedby which the length of a part of the hook 22 protruding out of the first member 21 isadjustable in relation to the first member 21. The second member 22 comprises a pin222 arranged at a first end 221 of the second member 22. The pin 222 is arrangeddiametrically through the second member 22 and protrudes outwards on opposing sidesof the second member 22, forrning an essentially T-shaped first end 221. This is shownin Fig. 12a, and especially also in Fig. 12b showing an enlarged section of the first end 221 of the second member 22. The pin 222 is configured to cooperate with an interior of the first member 21, shown in Fig. 11. The first member 21 is provided with at leastone, and preferably two, vertically extending slits 216, which are formed radiallyoutwardly from the central hole 218 in the first member 21 .The second member 22 canbe moved vertically in the central hole 218. The pin 222 slides in the slits 216, allowingaxial motion of the second member 22 limited downwardly by a slit stop 213 whichdefines the first, maximum, protrusive length of the second member 22. This firstprotrusive length of the second member 22, being the maximum length that the secondmember 22 can extend out of the first member 21, would typically be used whenmounting the light fitting 20 to the ceiling. So this first protrusive length of the secondmember 22 would be the “mounting position”.

For the pin 222 to be able to enter the slits 216, the second member 22 must berotated into a first rotational position where the pin 222 is aligned with the slits 216. Inorder to lock the second member 22 at a second protrusive position that corresponds toan inserted position, i.e. a shorter length of the part of the hook 22 protruding outsidethe first member 21, recesses 214 are provided. The second protrusive length of thesecond member 22, being the minimum length that the second member 22 can extendout of the first member 21, would typically be used after the light fitting 20 has beenmounted to the ceiling and the lamp is ready for use. So this second protrusive length ofthe second member 22 would be the normal “in-use position”. The recesses 214 arearranged at the upper portion of the first member 21 and are mirrored essentially in thecross-sectional plane as illustrated in Fig. 11. The second member 22 is rotated into asecond position in relation to the first member 21, whereby the pin 222 enters therecesses 214 and the second member 22 is thereby supported vertically by theinteraction between the pin 222 and respective shelves 217 arranged at a lower end ofthe recesses 214. Shelf stops 215 may be provided which prevent the second member 22from unintentional rotation by which the pin 222 leaves the shelves 217 and falls out ofthe recesses 214 and down to the slit stop 213. Altematively or in combination with thestops 215, the surface of each shelf 217 may be slightly inclined such that the pin 222slides into the vertically lowest position in the recess 214. This will also aid in securingthe second member 22 in the second rotational position. Preferably, the first and secondrotational positions are separated by approximately 90°.

In Figs. 14a-b, the process of reducing the length of the part of the secondmember 22 protruding out of the first member 21 is shown. It is beneficial if the secondmember 22 is kept at maximum extended length while mounting the light fitting 20 to the ceiling, because this will facilitate access to the components that otherwise are to be hidden by the housing member 23. In Fig. 14a, the second member 22 is shown whenprotruding a maximum distance dl out of the first member 21 (the first member beinghidden by housing member 23). Afterwards, when the first member 21 is attached to theceiling and the electrical wiring is done, the housing member 23 may be attached at itspreferred height using the nut 24. Then, as indicated in Fig. 14b, the second member 22is simply pushed upwards, towards the first member 21. When the pin 222 arranged inthe first end 221 reaches the recesses 214, the second member 22 is free to be rotatedinto the second rotational position whereby the second member 22 is supportedVertically, by the pin 222 resting on the shelVes 217 arranged in the recesses 214.Thereby the second member 22 is held in place with a smaller degree of protrusion outof the first member 21, indicated by distance d2. For a final height adjustment of thelamp the chain is used, and a desired height if the lamp is achieved by hanging asuitable link of the chain to the end of the hook 22, as is per se known.

In Fig. 15, an outline of a method for mounting the light fitting 10, 20 to aceiling is shown. The method comprises the step 101 of attaching the first member 11,21 of the light fitting 10, 20 to the ceiling followed by a step 102 of adjusting the lengthof a part of the second member 12, 22 protruding out of the first member 11, 21.Thereby the height of which the lamp is hanging from the light fitting 10, 20 can beadjusted after the light fitting 10, 20 is mounted to ceiling.

Tuming to Fig. 16 the outline of a further embodiment of a method formounting a light fitting to a ceiling is shown. The method shown in Fig. 16 comprisesthe step 201 of adjusting the length of a part of the second member 12, 22 protrudingout of the first member 11, 21 to facilitate access to the first member 11, 21. I.e. in step201 the second member 22 is extended to the maximum or preferred length. In asubsequent step 202 the first member 11, 21 of the light fitting 10, 20 is attached to theceiling, after which a step 203 is performed in which the nut 14, 24 is attached to thefirst member 11, 21. In this step the housing member 13, 23 is attached to the firstmember 11, 21 and secures the light fitting 10, 20 against the ceiling. The length of apart of the second member 12, 22 protruding out of the first member 11, 21 may thenconveniently be adjusted to a desired length in step 204.

In Fig. 17, a method is shown for mounting the light fitting of the embodimentsshown in Figs. 1 and 3-8. Firstly, a step 301 is performed in which the length of the wire12 protruding out of the first member 11 is adjusted by unlocking the lock member 111to allow extension to a length facilitating access to the first member 11. The length of the wire 12 protruding out of the first member 11 could be extended to a maximum length or any given length that is considered sufficient. The first member 11 may thenbe attached to the ceiling in step 302. Note that these two first steps may just as well beperformed in the opposite order, i.e. the wire 12 may just as well be extended when thelight fitting 10 is hanging from the ceiling. In order to attach the housing member 13 tothe first member 11, the nut 14 is attached to the first member 11 in step 303. Asmentioned above, by tightening the nut 14, the housing member 13 is pressed upwardsagainst the ceiling, which secures the light fitting 10. When the light fitting 10 issecured, the length of the wire 12 protruding out of the first member 11 can be adjustedto a desired length in step 304. This is done by simply lifting the lamp and feeding thewire 12 towards and into the first member 11. The wire lock 113 of the first member 11will allow the wire 12 to travel in an upward direction, but as soon as a downward forceis applied on the wire 12 it will lock automatically. It is also conceivable that the lockmember 111 may be maneuverable also after that the nut 14 is attached to the firstmember 11. This would allow extension of the wire 12 even when the housing member13 is mounted to the ceiling.

In Fig. 18, a method is shown for mounting the light fitting 20 of theembodiments in Figs. 2 and 9-14. Firstly, in step 401 the length of a part of the hook 22extending outside the first member 21 is adjusted by rotating the hook 22 to the firstrotational position to allow extension to a length facilitating access to the first member21. In this position the pin 222 of the hook 22 rests on the slit stops 213 illustrated inFig. 11. The extension of the hook 22 allows the housing member 23 to move awayfrom the first member 21, and this simplifies the mounting of the first member 21 to theceiling as well as any other installation task that might be necessary. In step 402 the firstmember 21 is attached to the ceiling by e. g. hanging it from a premounted ceiling hookor using screws or other means for securing it to the ceiling. When the first member 21is secured to the ceiling, the nut 24 may be attached to the first member 21 in step 403,which thereby attaches the housing member 23 to the first member 21. The length of theprotruding part of the hook 22 may then be adjusted in step 404 by feeding the hook 22towards the first member 21 and then rotating it into the second rotational position. Thepin 222 then latches into the recesses 214 to rest on the shelves 217 and supports thehook 22 that protrudes to a less extent from the first member 21.

It should be mentioned that the inventive concept is by no means limited to theembodiments described herein, and several modifications are feasible without departingfrom the scope of the appended claims. In the claims, the term “comprises/comprising” does not exclude the presence of other elements or steps. Additionally, although individual features may be included in different claims, these may possiblyadvantageously be combined, and the inclusion in different claims does not imply that acombination of features is not feasible and/or advantageous. In addition, singular references do not exclude a plurality. The terrns an”, “first”, “second” etc do notpreclude a plurality. Reference signs in the claims are provided merely as a clarifying example and shall not be construed as limiting the scope of the claims in any Way.

Claims

1. A light fitting (10, 20) for attaching a pendant lamp (30, 40) to a ceiling, saidlight fitting (10, 20) comprising a first member (11, 21) attachable to the ceiling and asecond member (12, 22) having a first end (121, 221) being connected to the firstmember (11, 21) and a second end (122, 222) being connected, directly or indirectly, tothe pendant lamp (30, 40), such that the second end (122, 222) protrudes out of the firstmember (11, 21) in a direction towards the pendant lamp (30, 40), wherein the length ofa part of the second member (12, 22) protruding out of the first member (11, 21) is adjustable, and wherein the second member (22) is an elongated hook (22).

2. Light fitting (10, 20) according to claim 1, further comprising a housingmember (13, 23) configured to at least partly cover the first member (11, 21), saidhousing member (13, 23) comprising a first hole (131, 231) through which the secondmember (12, 22) extends.

3. Light fitting (10, 20) according to claim 2, wherein the first hole (131, 231)of the housing member (13, 23) is configured to be essentially axially aligned with thefirst member (11, 21).

4. Light fitting (10, 20) according to claim 2 or 3, wherein the first member(11, 21) comprises a thread (112, 212) and wherein the light fitting (10, 20) furthercomprises a nut (14, 24) through which the second member (12, 22) extends and whichis configured to engage with the thread (112, 212) of the first member (11, 21).

5. Light fitting (10, 20) according to claim 4, wherein the nut (14, 24) is axiallymoVeable relative the second member (12, 22), said nut (14, 24) being rotatable inrelation to the light fitting (10, 20) and comprising a ﬂange (141, 241) configured toVertically support the housing member (13, 23).

6. Light fitting (20) according to claim 1, wherein the hook (22) is configuredto, in a first rotational position in relation to the first member (21), allow for a firstextension of the hook (22) out of the first member (21), and, in a second rotational position in relation to the first member (21) allow for a second extension of the hook (22) out of the first member (21), Wherein the first extension is longer than the second extension.

7. Light f1tting (20) according to claim 6, Wherein the first rotational positionand the second rotational positions are offset by approximately 90° in relation to each other.

8. Light f1tting (20) according to any of claims 6 to 7, Wherein the hook (22) atits first end (221) comprises a pin (222) protruding from at least one side of the hook(22) in a direction essentially perpendicular to the extension of the hook (22), said pin(222) being configured to be vertically moveable in at least one vertical slit (216)provided in the first member (21), said slit (216) being limited by a slit stop (213)arranged in a first end of the slit (216) and def1ning the length of the first extension ofthe hook (22), Wherein said pin (222) can be rotated in at least one recess (214) arrangedin a second end of the slit (216) to engage With a shelf (217) arranged in the second endof the slit (216), said shelf (217) defining the length of the second extension of the hook(22).

9. Light f1tting (20) according to claim 8, Wherein each shelf (217) comprises ashelf stop (215) Which requires the hook (22) to be further inserted into the first member (21) to allow rotation into and out of the second rotational position.

10. A lamp (30, 40) for attachment to a ceiling, said lamp (30, 40) comprising alight f1tting (10, 20) according to any of claims 1 to 9.

11. Method for mounting the light f1tting (10, 20) of claim 1 to a ceiling, saidmethod comprising the steps of:- attaching (101) the first member (11, 21) of the light f1tting (10, 20) tothe ceiling, and- adjusting (102) the length of a part of the second member (12, 22)protruding out of the first member (11, 21).

12. Method for mounting the light f1tting (10, 20) of claim 4 or any previous claim depending from claim 4, to a ceiling, said method comprising the steps of: - adjusting (201) the length of a part of the second member (12, 22) protrudingout of the first member (11, 21) to facilitate access to the first member (11, 21), - attaching (202) the first member (11, 21) of the light fitting (10, 20) to theceiling, - attaching (203) the nut (14, 24) to the first member (11, 21) and therebyattaching the housing member (13, 23) to the first member (11, 21), - adjusting (204) the length of a part of the second member (12, 22) protrudingout of the first member (11, 21) to a desired length.

13. Method for mounting the light fitting (20) of claims 4 and 6 or any claimdepending from claim 4 and 6, to a ceiling, said method comprising the steps of: - adjusting (301) the length of a part of the hook (22) protruding out of the firstmember (21) by rotating the hook (22) to the first rotational position to allow for anextension of the hook (22) to a length facilitating access to the first member (21), - attaching (3 02) the first member (21) of the light fitting (20) to the ceiling, - attaching (303) the nut (24) to the first member (21) and thereby attaching thehousing member (23) to the first member (21), - adjusting (3 04) the length of a part of the hook (22) protruding out of the firstmember (21) to a desired length by feeding the hook (22) towards the first member (21)and then rotating it into the second rotational position.