[0001] The present invention relates to a guide device for installing a lighting apparatus
               on a lighting bar, a lighting system and a related method for installing and positioning
               a lighting apparatus on the lighting bar, in any axial position with respect thereto.
 
            [0002] Lighting bars suitable for producing a diffused light beam are known.
 
            [0003] Lighting apparatuses suitable for generating a concentrated light beam, i.e., directed
               to illuminate a specific area or item, are also known.
 
            [0004] Lighting systems are also known, which are capable of combining a diffused light
               effect produced by a lighting bar with a more concentrated lighting effect directed
               towards a desired point produced by a lighting apparatus fixed to the lighting bar,
               as described for example in 
EP3882513A1 or in 
Italian applications 102021000004706 and 
102021000023348 (not yet published), to the same Applicant of the present invention.
 
            [0005] In particular, the aforesaid known lighting systems which combine a diffused light
               effect with a more concentrated lighting effect suffer from some critical issues during
               the step of fixing or repositioning the concentrated light point on the diffused light
               lighting bar. In fact, during the insertion of the electrical connection needles into
               the insulating body in which the linear electronic board for the electrical connection
               with the respective power supply tracks is embedded, it may happen that such needles
               undergo a deformation or twist when inserted, resulting in the risk of a missing or
               incorrect connection with the respective power supply tracks.
 
            [0006] It is the object of the present invention to provide a guide device for installing
               a lighting apparatus on a lighting bar of a lighting system which is capable of overcoming
               the aforesaid drawbacks and, in particular, which is capable of reducing the risks
               of incorrect positioning of the lighting apparatus and missing or incorrect electrical
               connection between needles and power supply tracks.
 
            [0007] It is another object of the present invention to allow one or more lighting apparatuses
               along the bar to be repositioned reliably and several times in any desired position.
 
            [0008] It is another object of the invention to suggest a lighting system which allows obtaining
               the light effects mentioned above, even in outdoor environments, thus having a high
               degree of protection.
 
            [0009] It is another object of the invention to suggest a lighting system of the aforesaid
               type, in which the lighting apparatuses can be easily removed from the lighting bar
               for maintenance or replacement thereof.
 
            [0010] Such objects are achieved by a guide device for installing a lighting apparatus on
               a lighting bar, by a lighting system, by an installing method, by a method for positioning
               a lighting apparatus on a lighting bar of a lighting system, by an accessory, and
               by a kit in accordance with the appended independent claims. The dependent claims
               describe preferred or advantageous embodiments of the lighting system.
 
            [0011] The features and advantages of the accessory, the lighting system, the guide device,
               the kit, and the installing method will however become apparent from the following
               description of preferred embodiments thereof, given by way of non-limiting indication,
               with reference to the accompanying drawings, in which:
               
               
                  - Figure 1 shows a perspective view of a lighting system according to the invention;
- Figures 2 and 2a show two axial sections of the lighting bar and a connecting portion
                     of a lighting apparatus, in one embodiment, before and after the mutual coupling thereof,
                     respectively;
- Figure 3 shows a cross section of the bar alone;
- Figure 3a shows an axial section of the bar with separate parts; and
- Figure 4 shows a plan view of a portion of the linear electronic board and of the
                     underlying power supply connector;
- Figure 5 shows an axonometric view of an accessory in accordance with the present
                     invention arranged close to a base portion of a lighting apparatus with needles extracted
                     from the accessory;
- Figure 6 shows a sectional view of an accessory in accordance with the present invention
                     coupled to a base portion of a lighting apparatus with needles inserted into the accessory,
                     in accordance with an embodiment of the present invention;
- Figure 7 shows an axonometric view of an accessory in accordance with the present
                     invention arranged close to a base portion of a lighting apparatus with needles extracted
                     from the accessory, in an opposed configuration with respect to the configuration
                     in Figure 5, i.e., with the accessory rotated by 180°;
- Figure 8 shows a sectional view of an accessory in accordance with the present invention
                     coupled to a base portion of a lighting apparatus with needles inserted into the accessory,
                     in accordance with an embodiment of the present invention, in an opposed configuration
                     with respect to the configuration in Figure 6, i.e., with the accessory rotated by
                     180°;
- Figure 9 shows an exploded axonometric view of the accessory in accordance with an
                     embodiment of the present invention;
- Figure 10 shows an axonometric view of a lighting system installation kit in accordance
                     with an embodiment of the present invention in which, on one side, a lighting apparatus
                     being installed on a lighting bar by a guide device can be seen, and on the other
                     side, only the guide device mounted to the lighting bar can be seen, without the lighting
                     apparatus;
- Figure 11 shows an axonometric view of a guide device, in accordance with an embodiment
                     of the present invention;
- Figure 12 shows a top plan view and a front elevation view of the guide device in
                     Figure 11.
 
            [0012] In said drawings, reference numeral 1 indicates as a whole a lighting system according
               to the invention.
 
            [0013] The lighting system 1 comprises a lighting bar 10 and at least one lighting apparatus
               100; 100' couplable to the lighting bar, in any axial position along the lighting
               bar.
 
            [0014] In the example in Figure 1, a projector 100 with adjustable optics and a downlight
               100' with fixed optics are coupled to the lighting bar 10, for example. Obviously,
               other types of apparatuses can be simultaneously connected to the lighting bar 10,
               according to the coupling modes described below.
 
            [0015] The lighting bar 10 comprises a bar body 12 extending longitudinally along a bar
               axis X. This bar body 12 is suitable for being fixed to a support, such as a ceiling
               or a wall, for example, or even recessed or suspended.
 
            [0016] The bar body 12 comprises an inner portion 12a and an outer portion 12b.
 
            [0017] The inner portion 12a forms a central seat 14 defining a longitudinal central opening
               16. In other words, the central seat 14 is open along one side of the inner portion
               12a, for example one side opposite to that for fixing it to the support.
 
            [0018] For example, the inner portion 12a is made with an extruded section bar, for example
               made of aluminum.
 
            [0019] The outer portion 12b consists of two side walls 12b' removably fixed to the inner
               portion 12a.
 
            [0020] Each side wall 12b' forms, with the inner portion 12a, a longitudinal side pocket
               122 open at least in the same direction as the central opening 16.
 
            [0021] The lighting bar 10 comprises a linear lighting source 18 housed in the central seat
               14. The linear lighting source 18 comprises a linear electronic lighting board 20,
               i.e., an electronic board with an elongated shape, i.e., in the shape of a strip,
               along the body axis X. A lighting circuit 22 is provided on the linear electronic
               board 20, suitable for generating a preferably substantially continuous light beam,
               directed towards the central longitudinal opening 16 when electrically powered by
               a first power supply line 25 extending along the linear electronic board 20.
 
            [0022] For example, the lighting circuit comprises a row of LEDs 22' mounted to and uniformly
               distributed on the electronic board.
 
            [0023] The linear electronic board 20 is embedded or inserted into or covered by an insulating
               body 24, preferably made of a preferably translucent polymer material, for example
               a silicone material.
 
            [0024] For example, the linear electronic board 20 is co-molded with the insulating body
               24. In an alternative embodiment, the insulating body 24 is crossed by a longitudinal
               seat and the linear electronic board 20 is then inserted into such a longitudinal
               seat.
 
            [0025] In one embodiment, the insulating body 24 with the linear electronic board 20 gives
               the lighting bar 10 a degree of protection suitable for being used in outdoor environments,
               thus resistant to weathering and dust.
 
            [0026] A second power supply line 26 is obtained along the linear electronic board 20, independent
               of the first one.
 
            [0027] For example, the two power supply lines 25, 26 consist of electrical conductors substantially
               extending over the entire length of the linear electronic board 20. For example, such
               electrical conductors are in the form of tracks obtained on the linear electronic
               board 20.
 
            [0028] In one embodiment, each power supply line 25, 26 consists of a positive pole and
               a negative pole, for example at 24V.
 
            [0029] Each lighting apparatus 100; 100' is provided with mechanical connection means 102
               suitable for interacting with the bar body 12 for mechanically supporting the lighting
               apparatus 100; 100' by the lighting bar 10.
 
            [0030] Moreover, each lighting apparatus 100; 100' is provided with electrical connection
               needles 104 suitable for establishing an electrical contact with the second power
               supply line 26.
 
            [0031] More in detail, each lighting apparatus 100 is provided with at least a pair of anchoring
               arms 108, each suitable for being inserted into a respective longitudinal side pocket
               122 and suitable for snap-engaging the inner portion 12a and/or the outer portion
               12b of the bar body 12 for mechanically supporting the lighting apparatus 100 by the
               lighting bar 10.
 
            [0032] In one embodiment, the electrical connection needles 104 are suitable for establishing
               an electrical contact with the second power supply line 26 by passing through the
               insulating body 24.
 
            [0033] In other words, the electrical connection needles 104 are configured to pierce the
               insulating body 24 until they abut against the respective conductors of the second
               power supply line 26.
 
            [0034] In one embodiment, the anchoring arms 108 and the electrical connection needles 104
               are configured to simultaneously obtain the mechanical and electrical connection of
               the lighting apparatus 100; 100' with the lighting bar 10.
 
            [0035] In one embodiment, the anchoring arms 108 and the electrical connection needles 104
               extend from a base portion 106 of the lighting apparatus 100; 100' resting against
               the lighting bar 10 when the anchoring arms 108 are coupled to the lighting bar 10.
 
            [0036] In one embodiment, the electrical connection needles 104 extend from a connector
               120 housed in the base portion 106. This connector 120 is configured to abut against
               a facing outer surface 24" of the insulating body 24. For example, this outer surface
               24" is substantially flat.
 
            [0037] In one embodiment, the connector 120 is configured to create a calibrated interference
               with the outer surface 24", so as to prevent the penetration of external agents into
               the area where the insulating body 24 is pierced by the electrical connection needles
               104.
 
            [0038] For example, the connector 120 forms, about each electrical connection needle 104
               or about the whole area of the electrical connection needles 104, an annular tooth
               123 that, when the lighting apparatus 100; 100' is coupled to the bar body 12, interferes
               with the outer surface 24" of the insulating body 24, for example exerting a calibrated
               pressure thereon, which prevents the penetration of external agents into the area
               of the insulating body 24 delimited by each annular tooth 122.
 
            [0039] Returning now to the bar body 12, in one embodiment, the inner portion 12a is made
               with a substantially "U" shaped section bar, i.e., defining an inner bottom wall 34
               and two inner side walls 30.
 
            [0040] In one embodiment, each outer side wall 12b' is substantially parallel to and spaced
               apart from the respective inner side wall 30. Each longitudinal side pocket 122 is
               thus delimited by an inner side wall 30 and an outer side wall 12b'.
 
            [0041] In one embodiment, the longitudinal side pockets 122 are closed on the opposite side
               with respect to the insertion opening of the anchoring arms 108.
 
            [0042] In one embodiment, each outer side wall 12b' is provided with a transverse pin 130
               inserted with reversible force coupling into a respective pin seat 132 obtained in
               the central body 12a.
 
            [0043] In one embodiment, each transverse pin 130 has a sawtooth-shaped side surface.
 
            [0044] Preferably, each transverse pin 130 is made in one piece with the outer portion 12b
               of the bar body 12, i.e., it is a single piece with the bar body 12. In other words,
               the outer portion 12b of the bar body 12 and each transverse pin 130 are a single
               drawn piece.
 
            [0045] In one embodiment, each transverse pin 130 is inserted into a cap 136 made of a polymer
               material.
 
            [0046] Moreover, the cap 136 made of a polymer material favors the stable, but reversible
               coupling between the transverse pin 130 and the respective pin seat 132.
 
            [0047] In one embodiment, when the transverse pin 130 is completely inserted into the respective
               pin seat 132, a proximal portion 138 of the respective outer side wall 12b' abuts
               with positive coupling with a corresponding proximal portion 140 of the inner portion
               12a of the bar body 12. The pressure insertion of the transverse pin 130 into the
               respective pin seat 132 can thus be easily carried out by pressing on the proximal
               portion 138 of the outer side wall 12b'.
 
            [0048] Moreover, in one embodiment, each transverse pin 130 extends from a thinned portion
               of the respective side wall (for example, coinciding with the proximal portion 138),
               which is made with a thickness such as to bend so as to favor the extraction of the
               transverse pin 130 from the respective pin seat 132.
 
            [0049] The possibility of decoupling the outer side walls 12b' from the inner portion 12a
               allows access to the anchoring arms 108 for disengaging them from the respective pockets
               122 and thus disconnecting the lighting apparatus from the bar 12 for a replacement
               or maintenance thereof, for example.
 
            [0050] At the same time, the outer side walls 12b', when connected to the inner portion
               12a, allow hiding and protecting the anchoring arms 108, which would otherwise be
               completely exposed to the outside.
 
            [0051] In some embodiments, an undercut 32 facing the respective longitudinal side pocket
               122 is obtained in each of the inner side walls 30. Each anchoring arm is provided
               with a locking tooth 110 engageable by a respective undercut 32 of the inner side
               wall 30.
 
            [0052] In other words, the anchoring arms 108 are elastic arms snapping into the locking
               position when the locking tooth 110 meets the undercut 32.
 
            [0053] In some embodiments, the locking tooth 110 has a curvilinear profile, so as to allow
               a disengagement thereof from the undercut 32 if the lighting apparatus 100; 100' is
               pulled along the direction of the anchoring arm 108.
 
            [0054] Instead, in other embodiments such as those shown in the drawings, the locking tooth
               110 is configured to prevent a separation of the lighting apparatus 100; 100' from
               the bar 10 by acting along the direction of the anchoring arm 108; here, it is necessary
               to remove the outer side walls 12b' to bend the anchoring arms 108 outwards, so as
               to cause the locking tooth 110 to come out of the respective undercut.
 
            [0055] In one embodiment, the electrical connection needles 104 extend between and parallel
               to the anchoring arms 108.
 
            [0056] In one embodiment, the longitudinal central seat 14 is delimited by the bottom wall
               34 and the pair of parallel side walls 30. The linear lighting source 18 rests on
               the bottom wall 34 and has a light beam emission surface substantially flush with
               the ends of the side walls 30. For example, the outer surface 24" of the insulating
               body 24 is substantially flat and coplanar with the ends of the side walls 30.
 
            [0057] When the base portion 106 of the lighting apparatus 100; 100' abuts against the bar
               body 12, i.e., the side walls 30 thereof, the electrical connection needles 104 and
               the anchoring arms 108 thus extend completely inside the lighting bar 10.
 
            [0058] As mentioned above, the base portion 106 in contact with the insulating body 24 by
               means of the connector 120 ensures the degree of protection which allows using the
               lighting system even outdoors.
 
            [0059] The electrical connection needles 104 are at least four in number: a first pair of
               needles 104a and a second pair of needles 104b.
 
            [0060] Preferably, the first pair of needles 104a is configured to intercept a first conductor
               26a of the second power supply line 26; the second pair of needles 104b is configured
               to intercept a second conductor 26b of the second power supply line 26.
 
            [0061] Preferably, the first pair of needles 104a is aligned parallel to the bar axis X.
 
            [0062] Preferably, the second pair of needles 104b is aligned parallel to the bar axis X
               and spaced apart in a direction transverse to the first pair of needles 104a.
 
            [0063] Therefore, if the linear lighting source 18 had a length such as to require, for
               production needs, interruptions of the copper tracks 26, 26b (as shown in Figure 4),
               and if a lighting apparatus 100, 100' was randomly positioned precisely straddling
               one of such interruptions, there would be the certainty that at least one needle of
               each pair of needles 104a and 104b establishes an electrical contact with the respective
               conductor 26, 26b.
 
            [0064] Figure 4 shows a positioning example of the pairs of needles 104a, 104b with respect
               to the linear lighting source 18, where a needle of each pair ends precisely at an
               interruption - for example of about 1 mm - of the conductors 26a, 26b of the linear
               electronic board 20. It can be noted that the other needle of each pair of needles
               is here instead in contact with the respective conductor 26a, 26b. The power supply
               of the lighting apparatuses 100, 100' is thus always ensured, regardless of the position
               thereof along the bar 10.
 
            [0065] In one embodiment, the two power supply lines 25, 26 are powered by means of a power
               supply cable 132 electrically connected thereto at one end of the insulating body
               24. For example, in order to ensure a high IP protection degree (for example IP67),
               the power supply cable is connected to the power supply lines by means of a cap 130
               made of an insulating material (such as silicone), co-molded with the insulating body
               24.
 
            [0066] In one embodiment, shown in particular in Figure 4, the conductors 25a, 25b of the
               first power supply line 25 are obtained in a central portion of the linear electronic
               board 20, so as to intersect the LEDs of a row of LEDs mounted along the median axis
               of the board. The conductors 26a and 26b of the second power supply line 26 are instead
               obtained in outermost portions of the linear electronic board 20.
 
            [0067] An accessory 200 is described per se below, for installing a lighting apparatus 100;
               100' on a lighting bar 10 of a lighting system 1, of the type described in the present
               disclosure, i.e., comprising at least one lighting apparatus 100; 100' comprising
               the first pair of needles 104a configured to intercept a first conductor 26a and the
               second pair of needles 104b configured to intercept the second conductor 26b of the
               second power supply line 26.
 
            [0068] In accordance with an embodiment, the accessory 200 comprises an accessory body 200'
               which extends vertically along a vertical direction Y between a first end 210 and
               a second end 220 opposite to the first end 210 and which is defined by a side wall
               230 extending between the first end 210 and the second end 220 about and along the
               vertical direction Y. The accessory 200 also comprises a first pair of needle seats
               201 suitable for accommodating the first pair of needles 104a, and a second pair of
               needle seats 201' suitable for accommodating the second pair of needles 104b. The
               first pair of needle seats 201 is arranged and extends in length mainly along a first
               vertical plane P1 parallel to the vertical direction Y. The second pair of needle
               seats 201' is arranged and extends in length mainly along a second vertical plane
               P2 parallel to the first vertical plane P1 and spaced apart from said first vertical
               plane P1 along a transverse direction Z perpendicular to the vertical direction Y.
 
            [0069] The accessory 200 also preferably comprises a third pair of needle seats 203 suitable
               for accommodating the first pair of needles 104a and a fourth pair of needle seats
               203' suitable for accommodating the second pair of needles 104b. The third pair of
               needle seats 203 is arranged and extends in length mainly along a third vertical plane
               P3 incident to the vertical direction Y. The fourth pair of needle seats 203' is arranged
               and extends in length mainly along a fourth vertical plane P4 incident to the third
               vertical plane P3. Such a third vertical plane P3 and such a fourth vertical plane
               P4 each form an angle of incidence α1, α2 with a plane parallel to the vertical direction
               Y so that the third pair of needle seats 203 and the fourth pair of needle seats 203'
               are inclined by such an angle of incidence α1, α2 towards the side wall 230 starting
               from a central portion 204 of the accessory body.
 
            [0070] By virtue of the inclination of the third and fourth pairs of needle seats 203, 203'
               towards the side wall 230, following the insertion of the connection needles 104,
               the first pair of needles 204a and the second pair of needles are inclined 204b. By
               virtue of such an inclination, it is possible to compensate for the slight opposite
               deformation to which the connection needles 104 are subjected during the penetration
               into the insulating body 24, so as to ensure a perfect and reliable alignment with
               the first conductor 26a and the second conductor 26b.
 
            [0071] Preferably, the angle of incidence is an acute angle greater than 0° and less than
               10°, preferably less than 1°, even more preferably about 0.5°.
 
            [0072] In accordance with an embodiment, the first pair of needle seats 201 and the second
               pair of needle seats 201' comprise first 211 and second 211' access mouths obtained
               at the first end 210, respectively. Moreover, the third pair of needle seats 203 and
               the fourth pair of needle seats 203' comprise third 231 and fourth 231' access mouths
               obtained at the second end 220, respectively.
 
            [0073] In accordance with an embodiment, the accessory body 200' comprises a hollow base
               element 240, comprising an inner cavity 241 in which seat half-portions 203a, 203b
               of the third and fourth pairs of needle seats 203, 203' face. Moreover, the accessory
               body 200' also consists of a hollow interlocking element 250, engaged with the base
               element 240 in the inner cavity 241 and comprising an inner interlocking cavity 251
               in which second seat half-portions 201a, 201b of the first and second pairs of needle
               seats 201, 201' face. In addition, an upper closing element 260 is engaged with the
               interlocking element 250 in the inner interlocking cavity 251 and comprises corresponding
               second seat half-portions 201c, 201d of the first and second pairs of needle seats
               201 , 201', which, together with the second seat half-portions 201a, 201b, form the
               complete first and second pairs of needle seats 201, 201'. Moreover, a lower closing
               element 270 is engaged with the base element 240 in the inner cavity 241 and comprises
               corresponding seat half-portions 203c, 203d of the third and fourth pair of needle
               seats 203, 203', which, together with the seat half-portions 203a, 203b, form the
               complete third and fourth pairs of needle seats 203, 203'. This allows obtaining an
               accessory 200 which is very compact and easy to mold.
 
            [0074] Preferably, the base element 240, the interlocking element 250, the upper closing
               element 260, and the lower closing element 270 are each a distinct piece and are slidingly
               engaged with one another along the vertical direction Y.
 
            [0075] It is apparent that the present invention thus relates to a lighting system 1 described
               in the present disclosure and also comprising an accessory 200 as described in the
               preceding paragraphs.
 
            [0076] In addition, a method is described below, for installing a lighting apparatus 100;
               100' on a lighting bar 10 of a lighting system as described in the present disclosure.
 
            [0077] The method comprises the following operating steps:
               
               
                  - a) removing the first 104a and second 104b pairs of needles from the first pair of
                     needle seats 201 and the second pair of needle seats 201', respectively;
- b) inserting the first 104a and second 104b pairs of needles into the third pair of
                     needle seats 203 and the fourth pair of needle seats 203', respectively;
- c) removing the first 104a and second 104b pairs of needles from the third pair of
                     needle seats 203 and the fourth pair of needle seats 203', respectively;
- d) mounting the lighting apparatus 100; 100' on the lighting bar 10 with the insertion
                     of the first pair of needles 104a and the second pair of needles 104b through the
                     insulating body 24.
 
            [0078] Preferably, step b) comprises the step of moving the accessory 200 by means of a
               pivoting movement, i.e., a rotary movement about a point (joystick type), so as to
               facilitate the ingress of the needles into the relevant seats.
 
            [0079] The aforesaid steps of the method allow the first 104a and second 104b pairs of needles
               to be restored to the correct position, for example if it is necessary to remove and
               reposition the lighting apparatus 100; 100' on the lighting bar 10.
 
            [0080] In addition, the present invention relates to a guide device 5 per se, suitable for
               guiding the installation of the lighting apparatus 100; 100' on the lighting bar 10.
 
            [0081] The guide device 5 comprises a guide body 51, preferably made in a single piece,
               comprising a guide seat 52 having a cross section shaped to accommodate at least partially
               the lighting bar 10 in a relatively sliding manner along the bar axis X of the lighting
               bar 10. In other words, the guide device 5 is placeable on the lighting bar 10 by
               means of the guide seat 52 thereof and relatively slides with respect to the lighting
               bar 10, along the bar axis X, i.e., along the direction of greatest extension of the
               lighting bar 10.
 
            [0082] Preferably, the guide seat 52 is a seat shaped to have a cross section, i.e., a section
               perpendicular to the bar axis X, which is C-shaped, U-shaped or the like.
 
            [0083] The guide device 5 comprises an end portion 53, preferably made in a single piece
               with the guide body 51, suitable for abuttingly receiving the base portion 106 of
               the lighting apparatus, in particular a region of the base portion 106 about the first
               pair of needles 104a and the second pair of needles 104b, for example the connector
               120 housed in the base portion 106.
 
            [0084] According to an embodiment, the guide device 5 mainly extends along a main direction
               thereof, parallel to the sliding direction of the guide device 5 on the lighting bar
               10, i.e., parallel to the bar axis X, in a less predominant manner along a transverse
               direction K, orthogonal to the main direction thereof, and in an even less predominant
               manner along a third extension direction, orthogonal to both the main direction and
               the transverse direction K.
 
            [0085] According to one embodiment, the end portion 53 is a portion which protrudes from
               the guide body 51 along a direction parallel to the sliding direction of the guide
               device 5 on the lighting bar 10.
 
            [0086] Preferably, the end portion 53 is a plate which protrudes from the guide body 51.
               Preferably, the end portion 53 has a solid cross section, i.e., is not C- or U-shaped
               like the guide body 51.
 
            [0087] Preferably, the end portion 53 is shaped to slide over the insulating body 24 of
               the lighting bar 10.
 
            [0088] The end portion 53 is configured to be crossable by the first pair of needles 104a
               and the second pair of needles 104b so as to guide the needles so that they are correctly
               centered during the insertion into the insulating body 24 when the lighting apparatus
               100; 100' is installed on the lighting bar 10.
 
            [0089] In particular, the end portion 53 comprises a first guide seat 54 and a second guide
               seat 54', suitable for accommodating the first pair of needles 104a and the second
               pair of needles 104b, respectively.
 
            [0090] In particular, the first guide seat 54 and the second guide seat 54' are openings
               or holes spaced apart from each other, or guide walls spaced apart from each other.
               In particular, the first guide seat 54 and the second guide seat 54' are spaced apart
               by a distance equal to the distance between the first pair of needles 104a and the
               second pair of needles 104b. In particular, the first guide seat 54 and the second
               guide seat 54' are spaced apart from each other along a transverse direction K, orthogonal
               to the sliding direction of the guide device 5 on the lighting bar 10, i.e., orthogonal
               to the bar axis X.
 
            [0091] According to an embodiment, the first guide seat 54 and the second guide seat 54'
               are slots having a main extension along the bar axis X. Preferably, the end portion
               53, together with the first guide seat 54 and the second guide seat 54' are shaped
               to form a trident or three-arm fork shape, preferably having side teeth/arms with
               ends at a lower height than the central tooth/arm. Such a shape allows preserving
               the possibility of extracting or inserting the guide along the sliding direction of
               the guide device 5 on the lighting bar 10, even with the needles inserted into the
               first guide seat 54 and into the second guide seat 54'.
 
            [0092] Preferably, the end portion 53 comprises a first guide side wall 55 and a second
               guide side wall 55', arranged outside the first guide seat 54 and the second guide
               seat 54', respectively, and suitable for guiding the anchoring arms 108 of the lighting
               device 100; 100' to the correct centering position on the lighting bar 10.
 
            [0093] Preferably, the end portion 53 has a smaller width than the width of the guide body
               51 in the transverse direction K.
 
            [0094] Preferably, the end portion 53 has a suitable thickness along the third dimension
               for preventing the needles from coming into electrical contact with the power supply
               lines 25, 26 when the connector 120 abuts against an upper surface of the end portion
               53 or the guide body 51. For example, the end portion 53 has a thickness of at least
               one millimeter, preferably at most 9 millimeters.
 
            [0095] This allows positioning the lighting apparatus by inserting the needles into the
               insulating body, but without them being in contact with the power supply lines 25,
               26, since the connector 120 abuts against an upper surface of the end portion 53 or
               the guide body 51 and not against the insulating body 24. Once the guide device 5
               has been removed by sliding along the guide axis X, it is then possible to further
               press the lighting apparatus onto the lighting bar until the needles are completely
               inserted and the electrical contact between the needles and the power supply lines
               25, 26 is obtained. Optionally, the aforesaid further pressing action also causes
               the snap engagement of the pair of anchoring arms 108 in the respective longitudinal
               side pocket 122 of the lighting bar 10, for a secure tightening. The aforesaid steps
               of the method for positioning the lighting apparatus by means of the guide device
               5 are also the object of the present invention.
 
            [0096] Therefore, by virtue of the guide device 5, the installation of the lighting device
               is highly simplified. Moreover, the risk of a possible failure to center the needles
               with respect to the power supply tracks is minimized (if not even eliminated), exactly
               by virtue of the guidance provided by the guide device being installed, i.e., when
               inserting the needles into the insulating body 24 by manually pressing the lighting
               device on the lighting bar 10 by an operator.
 
            [0097] Therefore, the present invention also relates to a lighting kit comprising a lighting
               bar 10, having one or more of the features described above in the present disclosure,
               and a guide device 5 described above.
 
            [0098] In addition, the present invention also relates to an installation kit comprising
               an accessory 200 in accordance with the present invention, a lighting bar 10 having
               one or more of the features described above in the present disclosure, and a guide
               device 5 described above.
 
            [0099] In addition, the present invention also relates to a system installation kit comprising
               a lighting system and a guide device 5 previously described according to the present
               invention.
 
            [0100] Innovatively, by virtue of the guide device according to the present invention, the
               chances of a missing or incorrect connection of the needles with the respective conductors
               for the power supply are drastically reduced (if not eliminated).
 
            [0101] Moreover, by virtue of the slight inclination of the needles by the needle seats
               of the accessory, any possible return of the needles by the insulating body, responsible
               for any missing/incorrect connections, is compensated for, thus further reducing any
               error possibility.
 
            [0102] Moreover, advantageously, the accessory is highly compact and affordable to manufacture
               and therefore can be supplied together with the lighting system mounting kit.
 
            [0103] In addition, the present invention allows the lighting apparatuses to be removed
               and reliably repositioned several times at will. In fact, even in the case of deformation
               of the connection needles, it is first possible to correctly align and separate the
               needles by inserting them into the first and second pairs of needle seats, and then,
               by turning the accessory 200 by 180° about an axis parallel to the transverse direction
               Z, it is possible to give a slight inclination to the needles to compensate for the
               elastic return during the insertion into the insulating body, so as to ensure an always
               reliable electrical connection of the needles.
 
            [0104] In order to meet contingent needs, those skilled in the art may make changes and
               adaptations to the embodiments of the present invention or may replace elements with
               others which are functionally equivalent without departing from the scope of the following
               claims. Each of the features described above as belonging to one possible embodiment
               may be implemented irrespective of the other embodiments described.
 
          
         
            
            1. A guide device (5), suitable for guiding the installation of a lighting apparatus
               (100;100') of a lighting system (1), wherein said lighting system (1) comprises a
               lighting bar (10) and at least one lighting apparatus (100; 100') couplable to the
               lighting bar in any position along said lighting bar, and wherein the lighting bar
               comprises a bar body (12) which longitudinally extends along a bar axis and comprises
               an inner portion (12a) and an outer portion (12b), wherein the inner portion forms
               a central seat (14) defining a longitudinal central opening (16) in the inner portion,
               and wherein the outer portion (12b) consists of two side walls removably fixed to
               the inner portion, each side wall forming, with the inner portion, a longitudinal
               side pocket (122) open at least in the same direction as the central opening (16),
               and wherein said lighting system (1) comprises a linear lighting source (18) housed
               in said central seat (14) and comprising at least one linear electronic lighting board
               (20) on which a lighting circuit (22) is obtained, suitable for generating a light
               beam directed towards said longitudinal central opening (16) when electrically powered
               by a first power supply line (18) extending along the linear electronic board (20),
               a second power supply line (26) independent from the first one being obtained along
               the linear electronic board (20), said linear electronic board (20) being embedded
               or inserted into or covered by an insulating body (24) made of a polymer material
               and inserted into the central seat (14), and wherein each lighting apparatus (100;
               100') is provided with at least a pair of anchoring arms (108), each arm suitable
               for being inserted into a respective longitudinal side pocket (122) and for reversibly
               snap-engaging the inner portion and/or the outer portion of the bar body (12) for
               mechanically supporting the lighting apparatus (100; 100') by the lighting bar (10),
               and with electrical connection needles (104) suitable for establishing an electrical
               contact with the second power supply line (26) so as to electrically power the lighting
               apparatus, said electrical connection needles (104) being suitable for establishing
               the electrical contact with the second power supply line (26) passing through the
               insulating body (24), said connection needles (104) comprising a first pair of needles
               (104a) to intercept a first conductor (26a) of the second power supply line (26) and
               a second pair of needles (104b) to intercept a second conductor (26b) of the second
               power supply line (26),
               
               
wherein said guide device (5) comprises a guide body (51), comprising a guide seat
                  (52) having a cross section shaped to accommodate at least partially the lighting
                  bar (10) in a relatively sliding manner along the bar axis (X) of the lighting bar
                  (10) and an end portion (53) suitable for abuttingly receiving a base portion (106)
                  of the lighting apparatus,
               
               wherein the end portion (53) is configured to be crossable by the first pair of needles
                  (104a) and the second pair of needles (104b) so as to guide the needles so that they
                  are correctly centered during the insertion into the insulating body (24) when the
                  lighting apparatus (100; 100') in installed on the lighting bar (10).
  
            2. Guide device (5) according to claim 1, wherein the end portion (53) comprises a first
               guide seat (54) and a second guide seat (54'), suitable for accommodating the first
               pair of needles (104a) and the second pair of needles (104b), respectively, and wherein
               the first guide seat (54) and the second guide seat (54') are openings or holes spaced
               apart from each other.
 
            3. Guide device (5) according to claim 2, wherein the end portion (53) comprises a first
               guide side wall (55) and a second guide side wall (55'), arranged outside the first
               guide seat (54) and the second guide seat (54'), respectively, and suitable for guiding
               the anchoring arms (108) of the lighting device (100; 100') to the correct centering
               position on the lighting bar (10).
 
            4. Guide device (5) according to claim 3, wherein the guide seat (52) is a seat shaped
               to have a C-shaped or U-shaped cross section, and wherein the end portion (53) is
               a plate which protrudes from the guide body (51) along a direction parallel to the
               sliding direction of the guide device (5) on the lighting bar (10).
 
            5. Guide device (5) according to any one of the preceding claims, made in a single piece.
 
            6. Guide device (5) according to any one of the preceding claims, wherein said guide
               device mainly extends along a main direction thereof, parallel to the sliding direction
               of the guide device (5) on the lighting bar (10), i.e., parallel to the bar axis (X),
               extends in a less predominant manner along a transverse direction (K), orthogonal
               to the main direction thereof, and extends in an even less predominant manner along
               a third extension direction, orthogonal to both the main direction and the transverse
               direction (K),
               and wherein the end portion (53) has a suitable thickness along the third dimension
               for preventing the needles from coming into electrical contact with the power supply
               lines (25, 26) when a connector (120) of the power supply apparatus (100; 100') abuts
               against an upper surface of the end portion (53) or the guide body (51).
 
            7. Guide device (5) according to claim 6, wherein the end portion (53) has a thickness
               along the third direction of at least one millimeter and at most 9 millimeters.
 
            8. Guide device (5) according to any one of claims 2 to 7, wherein the end portion (53),
               together with the first guide seat (54) and the second guide seat (54') are shaped
               to form a trident or three-arm fork shape, preferably having side teeth/arms with
               ends at a lower height than the central tooth/arm.
 
            9. A system installation kit comprising a lighting system comprising a lighting bar (10)
               and at least one lighting apparatus (100; 100') couplable to the lighting bar, in
               any position along said lighting bar,
               wherein:
               
               
- the lighting bar comprises:
               
               - a bar body (12) longitudinally extending along a bar axis, suitable for being fixed
                  to a support, such as a ceiling, a wall, suspension cables, and comprising an inner
                  portion (12a) and an outer portion (12b), wherein the inner portion forms a central
                  seat (14) defining a longitudinal central opening (16) in the inner portion, and wherein
                  the outer portion (12b) consists of two side walls removably fixed to the inner portion,
                  each side wall forming, with the inner portion, a longitudinal side pocket (122) open
                  at least in the same direction as the central opening (16);
               
               - a linear lighting source (18) housed in said central seat (14) and comprising at
                  least one linear electronic lighting board (20) on which a lighting circuit (22) is
                  obtained, suitable for generating a light beam directed towards said longitudinal
                  central opening (16) when electrically powered by a first power supply line (18) extending
                  along the linear electronic board (20), a second power supply line (26) independent
                  from the first one being obtained along the linear electronic board (20), said linear
                  electronic board (20) being embedded or inserted into or covered by an insulating
                  body (24) made of a polymer material and inserted into the central seat (14);
               
               - each lighting apparatus (100; 100') is provided with at least a pair of anchoring
                  arms (108), each suitable for being inserted into a respective longitudinal side pocket
                  (122) and for reversibly snap-engaging the inner portion and/or the outer portion
                  of the bar body (12) for mechanically supporting the lighting apparatus (100; 100')
                  by the lighting bar (10), and with electrical connection needles (104) suitable for
                  establishing an electrical contact with the second power supply line (26) so as to
                  electrically power the lighting apparatus, said electrical connection needles (104)
                  being suitable for establishing the electrical contact with the second power supply
                  line (26) passing through the insulating body (24), said connection needles (104)
                  comprising a first pair of needles (104a) to intercept a first conductor (26a) of
                  the second power supply line (26) and a second pair of needles (104b) to intercept
                  a second conductor (26b) of the second power supply line (26),
               said installation kit further comprising a guide device (5) according to any one of
               claims 1 to 8. 
 
            10. Method for positioning a lighting apparatus (100; 100') on a lighting bar (10) of
               a lighting system according to claim 9, said method comprising the steps of:
               
               
- positioning the lighting apparatus (100; 100') by inserting the needles into the
                  insulating body (24), and so that a connector (120) of the lighting apparatus (100;
                  100') abuts against an upper surface of the end portion (53) or of the guide body
                  (51) and without the needles being in contact with the power supply lines (25, 26);
               
               - once the guide device (5) has been removed by sliding along the guide axis (X),
                  then exerting a further pressure of the lighting apparatus onto the lighting bar until
                  the needles are completely inserted and the electrical contact between the needles
                  and the power supply lines 25, 26 is obtained.
  
            11. Method for positioning a lighting apparatus (100; 100') according to claim 10, wherein
               the aforesaid further pressing also causes the snap-engagement of the anchoring arms
               (108) in the respective longitudinal side pocket (122) of the lighting bar (10), for
               a secure tightening.