A lighting device for portions of rooms

Abstract

A lighting device for portions of rooms comprising: a support structure (2) having a stem (5); a cap (6) slidably coupled to the stem (5) and comprising a through hole (8) adapted to be hit by the stem (5), the through hole (8) identifying a tubular element (9) having protrusions (10a) emerging from an inner wall (10) of the tubular element (9), in the tubular element (9) there being inserted a first friction body (20) interposed between the tubular element (9) and the stem (5).

Description

[0001] A LIGHTING DEVICE FOR PORTIONS OF ROOMS DESCRIPTION

[0002] Field of application

[0003] The present invention is applicable to the field of both indoor and outdoor furniture and relates to the lighting of rooms.

[0004] In more detail, the present invention refers to a lighting device.

[0005] State of the art

[0006] In the indoor and outdoor furniture sector, and in particular in the lighting of environments, the use of lamps is well known. In particular, as will be seen below, the present invention relates to table or floor stem lamps, but not only. In fact, the invention to be described below can also be applied to ceiling chandeliers.

[0007] The stem lamps of the prior art comprise a support structure, typically consisting of a rest base and a more or less long stem to which a cap is coupled in which the lighting source is inserted. In particular, in known lamps the cap is fixed at a certain point of the stem, typically but not necessarily, in the apical part of the same.

[0008] This aspect, however, is limiting in the case of the need to direct, enlarge and / or reduce the light beam generated by the lamp.

[0009] To overcome the aforementioned drawback, floor or table lamps are known in which the cap is both directable and slidable along the stem. In this way, it is possible to enlarge or reduce the light beam.

[0010] In particular, in the aforementioned lamps the cap is coupled to the stem thanks to the presence of a sliding element typically consisting of a body or a tubular element that is hit by the stem. More in detail, the sliding element comprises locking means for allowing the sliding element to be fixed at a given point of the stem, depending on the needs of the user. In this way it is also possible to rotate the cap 360° or almost around the stem. As for the locking means, they are typically, although not necessarily, constituted by a threaded element that, by screwing it, comes into abutment against the stem and, therefore, allows the cap to be locked at the desired height.

[0011] However, even the aforementioned lamps have some recognized drawbacks. In fact, the movement of the cap along the stem is inconvenient due to the need to first of all unlock the locking means, slide the sliding element along the stem as far as the desired height or rotate the cap towards the desired direction and, therefore, proceed with closing the locking means.

[0012] Moreover, the locking means of the known stem lamps comprises, at the opposite end with respect to the stem, a cap support element, typically consisting of a jointed element in order to give the cap a certain angle. Well, the jointed element must necessarily be made of rather sturdy and resistant materials as it must support the weight of the cap. Otherwise, in the long run it would risk giving way, thus losing the original inclination of the cap.

[0013] However, the weight of the jointed element together with that of the cap, albeit slowly or almost imperceptibly, may result in the loss of the position originally assigned to the cap.

[0014] And not only that. Often the fixing means, especially when they consist of a threaded element to be unscrewed and screwed, can ruin the stem in the long run due to the fact that, in order to lock the cap, they abut on the stem itself.

[0015] Still, the realization of the stem lamps of the prior art is laborious and undoubtedly burdensome due to the multiplicity of elements to be realized and for the sturdiness that the fixing means must have.

[0016] This obviously entails a considerable expenditure of money, with the consequent rise in the sales prices of the lamps described above.

[0017] Presentation of the invention

[0018] The object of the present invention is to overcome at least partially the drawbacks highlighted above by providing a lighting device for portions of rooms that can be easily realized.

[0019] In particular, an object of the present invention is to provide a lighting device that allows directing the light beam.

[0020] In addition, an object of the present invention is to provide a lighting device that allows the amplitude of the light beam to be adjusted.

[0021] Moreover, another object of the present invention is to provide a lighting device that allows an easy sliding of the cap along the stem.

[0022] It follows that a further object of the present invention is to provide a lighting device that is user-friendly.

[0023] Furthermore, a further object of the present invention is to provide a lighting device for portions of rooms that allows preserving the aesthetic integrity of the stem.

[0024] And not only that. Another object of the present invention is to provide a lighting device that makes it possible to avoid the wear of the jointed elements that typically support the caps of the stem lamps of the prior art.

[0025] Not least purpose is to provide a lighting device for portions of rooms that allows cost savings.

[0026] It follows that another object of the present invention is to provide a lighting device that makes it possible to contain the sale prices with respect to what happens with equivalent stem lamps of the prior art.

[0027] The aforementioned purposes, as well as others that will appear more clearly below, are achieved by a lighting device for portions of rooms in accordance with the claims that follow, which are to be considered an integral part of this patent.

[0028] In particular, the lighting device for portions of rooms comprises at least one support structure having at least one stem and also comprises at least one cap.

[0029] According to one aspect of the invention, the cap is slidably coupled to the stem.

[0030] Advantageously, the above makes it possible to move the cap along the length of the stem allowing, still advantageously, to enlarge or reduce the light beam.

[0031] According to another aspect of the invention, the cap comprises at least one through hole adapted to be hit by the stem. More in detail, according to a further aspect of the invention, the through hole identifies at least one tubular element hit by the aforementioned stem.

[0032] Advantageously, the fact that the stem passes through a through hole made directly on the cap, allows the cap to be coupled directly to the stem, regardless of the use of additional coupling means.

[0033] Moreover, the direct coupling between cap and stem allows, still advantageously, to avoid the wear of the jointed elements that typically support the caps of the stem lamps of the prior art.

[0034] And not only that. The realization of the through hole on the cap undoubtedly makes the lighting device of the invention simple to realize.

[0035] Still advantageously, this makes it possible to contain the costs of realization of the lighting device of the invention, with consequent further advantage for the end user since the cost of sale is not exacerbated due to the use of support elements made of particularly valuable materials.

[0036] Moreover, the coupling of the cap to the stem by means of the through hole allows, still advantageously, to rotate the cap itself around the stem, allowing an advantageous directability of the light.

[0037] According to another aspect of the invention, the tubular element has at least one inner wall from which a plurality of protrusions emerge.

[0038] Advantageously, these protrusions, by pushing towards the stem, while allowing the sliding of the cap on the stem, guarantee at the same time a selflocking of the cap on the stem by friction.

[0039] Still advantageously, the presence of the protrusions makes it possible to avoid the use of means for fixing the cap to the stem, with further advantageous cost savings.

[0040] And not only that. The self-locking of the cap allowed by the presence of the protrusions allows the cap to be easily moved along the stem, even using only one hand.

[0041] Moreover, in order to further increase the self-locking of the cap along the stem, according to another aspect of the invention in the tubular element there is placed a first friction body interposed between the tubular element and the stem.

[0042] Advantageously, the first friction body allows a more secure grip and, therefore, a locking of the cap on the stem to the most resistant desired size.

[0043] Moreover, still advantageously, the first friction body also makes it possible to preserve the aesthetics of the stem while acting as a protective bearing during the sliding of the cap along the stem.

[0044] As for the position of the first friction body, according to a further aspect of the invention, the lighting device comprises a first housing seat of the first friction body arranged in an intermediate position along the tubular element. Advantageously, this positioning allows a sliding of the cap along the stem in the equilibrium position.

[0045] From what has been said so far, it can also be observed that, advantageously, the coupling of the cap to the stem in a through hole made in the cap itself allows the centre of gravity of the cap to be moved with respect to the stem by approaching them. This results in the reduction of the moment of the weight force of the cap that would push it downwards with respect to the stem. This allows, still advantageously, to reduce the forces that must be counteracted to keep the cap in position, thus avoiding having to use contrast means such as the screws or the like mentioned above.

[0046] Brief description of the drawings

[0047] Further characteristics and advantages of the invention will become more apparent in the light of the detailed description of a preferred, but not exclusive, embodiment of a lighting device for portions of rooms, illustrated by way of nonlimiting example with the aid of the attached tables of drawings in which:

[0048] FIG. 1 represents the lighting device for portions of rooms according to the invention in perspective view;

[0049] FIGS. 2 to 5 represent details of the lighting device of FIG. 1 .

[0050] Detailed description of some preferred embodiments

[0051] With reference to the cited figures, we describe the lighting device 1 of portions of rooms which, as can be seen in fig. 1 , consists of a stem lamp, without however constituting a limit for the present invention. In fact, it can also be applied, for example, to chandeliers.

[0052] In particular, like the equivalent lamps of the prior art, the lighting device 1 of the invention comprises a support structure 2 consisting of a base 4 and a stem 5. Moreover, like the equivalent lamps of the prior art, the lighting device 1 comprises a cap 6 in which the lighting source is housed.

[0053] According to one aspect of the invention, the cap 6 is slidably coupled to the stem 5.

[0054] Advantageously, the above makes it possible to move the cap 6 along the length of the stem 5 allowing, still advantageously, to enlarge or reduce the light beam. It follows that what has been said allows, still advantageously, to concentrate the lighting on a certain point or to diffuse the light more widely. In fact, the closer the cap 6 is to the base 4 the narrower the illuminated area; conversely, the further the cap 6 is from the base 4 the wider the illuminated area.

[0055] According to another aspect of the invention, the cap 6 comprises a through hole 8 adapted to be hit by the stem 5. More in detail, according to a further aspect of the invention, the through hole 8 identifies at least one tubular element 9.

[0056] Advantageously, the fact that the stem 5 crosses the through hole 8 and the tubular element 9 made directly on the cap 6, allows the latter to be coupled directly to the stem 5, regardless of the use of further coupling means.

[0057] Moreover, the direct coupling between cap 6 and stem 5 allows, still advantageously, to avoid the wear of the jointed elements that typically support the caps of the stem lamps of the prior art.

[0058] And not only that. The realization of the through hole 8 on the cap 6, in addition to allowing the direct coupling between the latter and the stem 5, undoubtedly makes the lighting device 1 of the invention simple to realize.

[0059] Still advantageously, the above makes it possible to contain the costs for making the lighting device 1 of the invention, with consequent further advantage for the end user as the cost of sale does not suffer the aggravation due to the use of support elements made of particularly valuable and resistant materials.

[0060] Moreover, the coupling of the cap 6 to the stem 5 by means of the through hole 8 allows, still advantageously, to rotate the cap 6 itself around the stem 5, allowing an advantageous directivity of the light.

[0061] According to another aspect of the invention, the tubular element 9 has an inner wall 10 from which a plurality of protrusions 10a emerge.

[0062] In more detail, as can be seen in the figures, the protrusions 10a consist of real reliefs of the inner wall 10 of the tubular element 9.

[0063] Advantageously, this makes the lighting device 1 simple both aesthetically and in use and execution as the protrusions 10a are typically, but not necessarily, made in a single body with the tubular element 9.

[0064] In this sense, according to another aspect of the invention, the protrusions 10a comprise an elastically yieldable material such as, for example, rubber or plastic. Thus, the protrusions 10a, pressing against the stem 5, deform slightly so as to keep the cap 6 at the desired height. At the same time, however, the cap 6 is allowed to slide along the stem 5 without however ruining the surface of the latter.

[0065] Obviously, the number of protrusions 10a emerging from the inner wall 10 should not be considered limiting for the invention, as it can be any.

[0066] Advantageously, the aforementioned protrusions 10a, by pushing towards the stem 5, while allowing the sliding of the cap 6 on the stem 5, guarantee a selflocking of the cap 6 on the stem 5. In fact, the sliding of the cap 6 is allowed by the use of a slight force by the user to move the cap 6 to the desired height. Conversely, without the force of the user, the protrusions 10a by pressing against the stem 5, allow the sealing and therefore the locking of the cap 6 along the stem 5. In this regard, it is recalled that, advantageously, the execution of the through hole 8 in the body of the cap 6 makes it possible to bring the centre of gravity of the latter closer to the axis of the stem 5 and therefore limit the moment of force that would lead the cap 6 to slide on the stem 5.

[0067] Still advantageously, the presence of the protrusions 10a makes it possible to avoid the use of further screw fixing means for fixing the cap 6 to the stem 5, resulting in advantageous cost savings.

[0068] And not only that. The self-locking of the cap 6 allowed by the presence of the protrusions 10a allows the cap 6 to be easily moved along the stem 5, even using only one hand.

[0069] Going into detail of the embodiment described herein, as can be seen in the detail of fig. 4, the cap 6 comprises a first portion 11 and a second portion 12. Moreover, again in the embodiment described herein the tubular element 9 comprises a first segment 13 coupled to the first portion 11 of the cap 6 and a second segment 14 coupled to the second portion 12.

[0070] In detail, according to a further aspect of the invention the first segment 13 and the second segment 14 respectively comprise a first free end 16 and a second free end 17. In particular, the first free end 16 comprises a plurality of protruding teeth 19 arranged annularly thereon and elastically yieldable. According to another aspect of the invention, the first free end 16 is shaped so as to be inserted inside the second free end 17. In this way, the protruding teeth 19 are shaped to yield towards the inside of the tubular element 9 when the first segment 13 and the second segment 14 are mutually coupled.

[0071] Advantageously, the presence of the elastically yieldable protruding teeth 19 makes it possible to create a grip of the stem 5 and therefore, still advantageously, to allow the self-locking of the cap 6 to the stem 5.

[0072] However, what has been said so far about the conformation of the cap 6 in the first portion 11 and in the second portion 12 should not be considered limiting for different embodiments of the invention according to which, for example, the cap is made as a single body.

[0073] Moreover, in order to further increase the self-locking of the cap 6 along the stem 5, according to another aspect of the invention in the tubular element 9 there is placed a first friction body 20 interposed between the tubular element 9 and the stem 5. As can be seen from the figures, in the embodiment described herein the first friction body 20 consists of a ring and, in particular, an o-ring made of yieldable material such as, for example, rubber. Obviously, however, these aspects should not be considered limiting for different embodiments of the invention according to which, for example, the first friction body consists of a body having a tubular shape or is made of different materials.

[0074] In any case, advantageously, the first friction body 20 allows a more secure grip and, therefore, a more resistant locking of the cap 6 on the stem 5 to the desired size.

[0075] Moreover, still advantageously, the first friction body 20 also makes it possible to preserve the aesthetics of the stem 5 while acting as a protective bearing during the sliding of the cap 6 along the stem 5.

[0076] As for the position of the first friction body 20, according to a further aspect of the invention, the lighting device 1 comprises a first housing seat 21 of the first friction body 20 arranged in an intermediate position along the tubular element 9.

[0077] Advantageously, the fact that the first friction body 20 is arranged in an intermediate position of the tubular element 9 allows a sliding of the cap 6 along the stem 5 in the equilibrium position.

[0078] According to another aspect of the invention, the lighting device 1 also comprises a second friction body 23 housed in a second seat 24. More in detail, the second housing seat 24 is located near an outlet of the through hole 8. Even in the case of the second friction body 23, what has been said about the shape and material with which the first friction body 20 is made applies, i.e. these aspects should not be considered limiting for the invention.

[0079] Advantageously, the presence of the second friction body 23 makes it possible to further increase the grip of the cap 6 on the stem 5, allowing a greater resistance even over time.

[0080] It follows, still advantageously, that the presence of the first friction body 20 and the second friction body 23 allows once again to dispense with the use of locking means of the cap 6 to the stem 5.

[0081] It follows, still advantageously, that the above allows a greater ease and speed of realization of the lighting device 1 resulting in further advantageous cost savings.

[0082] Moreover, still advantageously, the second friction body 23 allows greater stability of the cap 6 while it slides along the stem 5.

[0083] However, the presence of the second friction body 23 should not be considered a limiting feature for different embodiments of the invention according to which it is not present or there are more second friction rings or they are located at different points than what happens in the present invention.

[0084] According to a further aspect of the invention, the lighting device 1 also comprises a sealing body 25 interposed between the tubular element 9 and the stem 5. In detail, the sealing body 25 is arranged above the first friction body 20. Obviously, also the presence of the sealing body 25 should not be considered limiting for the present invention.

[0085] Advantageously, the presence of the sealing body 25 makes it possible to avoid water leakage.

[0086] It follows, still advantageously, that the lighting device 1 of the invention is suitable for use not only indoors but also in open spaces, without the risk of moisture filtering inside the cap 6 compromising the functionality of the lighting device 1.

[0087] Moreover, as can be seen from the detail of fig. 3, inside the cap 6, in addition to the lighting source, there is also a power supply source which, in the embodiment described herein, consists of a battery 27.

[0088] Advantageously, the battery 27 makes it possible to make the lighting device 1 of the invention versatile and usable anywhere.

[0089] Moreover, if the lighting device 1 consists of a table lamp, the fact that it is powered by the battery 27 makes it easily transportable and usable even in the middle of nature during a picnic or camping, or where there is no connection to the electricity grid.

[0090] And not only that. Still advantageously, the presence of the battery 27 makes it possible to have no obstructing cables.

[0091] It follows, still advantageously, that thanks to the battery 27 the cap 6 of the lighting device 1 of the invention can be rotated 360° around the stem 5, allowing the widest directivity of the cap 6 itself.

[0092] The presence of the battery 27, however, should not be considered a limiting feature for different embodiments of the invention according to which the electrical power supply means consist of a cable that connects to the power grid of the place where it is used as a lighting device or any other electrical power supply means.

[0093] Operationally, the user places the lighting device 1 where he / she wishes, both on a table and on the ground, turns it on by means of a special switch and adjusts the desired light beam as well as the direction of the same by moving the cap 6 by sliding it along the length of the stem 5 or simply by rotating it around the latter.

[0094] In light of the foregoing, it is understood that the lighting device for portions of rooms achieves all the intended purposes.

[0095] In particular, the lighting device of the invention is easily realizable.

[0096] In addition to this, it allows you to direct the light beam.

[0097] Moreover, the lighting device of the invention makes it possible to adjust the amplitude of the light beam.

[0098] In addition, it allows the cap to slide easily along the stem.

[0099] It follows that the lighting device of the invention is user-friendly.

[0100] And not only that. The lighting device of the invention makes it possible to preserve the aesthetic integrity of the stem.

[0101] Still, it makes it possible to avoid wear of the jointed elements that typically support the caps of the stem lamps of the prior art.

[0102] Last but not least, the lighting device for portions of rooms of the invention allows cost savings.

[0103] As a result, it allows sales prices to be contained compared to what happens with equivalent stem lamps of the prior art.

[0104] The invention is susceptible to numerous modifications and variations, all falling within the appended claims. All the details may be replaced by other technically equivalent elements, and the materials may be different according to requirements, without departing from the scope of protection of the present invention.

Claims

C L A I M S1 . Lighting device for portions of rooms comprising: at least one support structure (2) having at least one stem (5); at least one cap (6) slidably coupled to said at least one stem (5), said at least one cap (6) comprising at least one through hole (8) adapted to be hit by said at least one stem (5), said at least one through hole (8) identifying at least one tubular element (9) having a plurality of protrusions (10a) emerging from at least one inner wall (10) of said at least one tubular element (9), in said at least one tubular element (9) there being inserted at least one first friction body (20) interposed between said at least one tubular element (9) and said at least one stem (5).

2. Lighting device according to Claim 1 , comprising a first housing seat (21) for said at least one first friction body (20), said first housing seat (21) being arranged in an intermediate position along said at least one tubular element (9).

3. Lighting device according to Claim 1 or 2, comprising at least one second friction body (23) housed in at least one second housing seat (24), said second housing seat (24) being located at least near at least one outlet of said at least one through hole (8).

4. Lighting device according to one or more of the preceding claims, wherein said at least one cap (6) comprises at least a first portion (11) and at least a second portion (12), said at least one tubular element (9) comprising at least a first segment (13) and at least a second segment (14) respectively coupled to said at least a first portion (11) and to said at least a second portion (12).

5. Lighting device according to Claim 4, wherein said at least one first segment (13) and at least one second segment (14) respectively comprise a first free end (16) and a second free end (17), said first free end (16) being shaped so as to be inserted at least partially inside said second free end (17), said first free end (16) comprising a plurality of protruding teeth (19) arranged annularly on said first free end (16) of said tubular element (9) and elastically yieldable, said protruding teeth (19) being shaped to yield towards the inside of said tubular element (9) when said first segment (13) and said second segment (14) are mutually coupled.

6. Lighting device according to one or more of the preceding claims, comprising at least one sealing body (25) interposed between said at least one tubular element (9) and said at least one stem (5), said at least one sealing body (25) being arranged above said at least one first friction body (20) so as to prevent any water leakage.

7. Lighting device according to one or more of the preceding claims, comprising electrical power supply means.

8. Lighting device according to Claim 7, wherein said electrical power supply means comprise at least one battery (27).

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