EP0352606A2 - Lamp arrangement - Google Patents

Abstract

The invention relates to a lamp arrangement having a frame (2) which can be suspended between two conductive wires (60, 62) and which comprises frame sections (6, 8) made of electroconductive material which are connected together and are electrically insulated with respect to one another in the connection region, and having a retaining device (10) pivotably mounted on the frame in the connection region in each case for holding a lamp (12). In the connection region (4), the frame (2) supports an essentially ball-shaped hinge element (14), which comprises two mutually electrically insulated hinge element halves (16, 18) which are electroconductively connected to one frame section (6, 8) in each case. The retaining device (10) comprises two struts (22, 24) made of electroconductive material which are arranged at a distance from one another and are connected to one another in an electrically insulated fashion, on the mutually facing sides of which struts in each case a ball cup (23, 25) complementary to one hinge element half (16, 18) in each case is formed. Each strut (22, 24) has means (36, 38) for the mechanical and electrical connection of a lamp pole (40, 42). <IMAGE>

Description

The invention relates to a lamp arrangement of the type mentioned in the preamble of claim 1.

Such lamp arrangements are preferably used in so-called low-voltage lighting systems. The bracket with the lamp mounted thereon can be placed on two freely tensioned, preferably parallel conductors connected to a power source, the bracket simultaneously serving to hold and power the lamp.

Through a brochure "DESIGN M" from Ingo Maurer GmbH, Munich, a lamp arrangement of the type mentioned in the preamble of claim 1 is already known, in which the holding device is used as inserted between two bracket sections to pivot about an axis running approximately parallel to the bowstring in the connection area Lamp socket is formed. Such a lamp holder is also described in more detail in DE-A 35 01 131. This arrangement allows the lamp to be swiveled 360 ° in a swivel plane perpendicular to the plane of the bracket. The area that can be illuminated with this lamp is thus essentially limited to this swivel plane. An expansion of the area that can be illuminated can possibly be achieved by hanging the bracket more or less obliquely between the conductors. However, this requires that the bracket can be adapted to the different spans required for different inclinations. As is apparent from the drawing as well as from the description of DE-A 35 01 131 also results, the known lamp holder is a structurally and assembly-technically complicated and also unappealing component.

It is the object of the present invention to provide a lamp arrangement of the type mentioned in the preamble of claim 1 which, compared to the known arrangement, offers a substantially expanded illuminable area and which is also structurally and assembly-technically simple and externally appealing.

This object is achieved by the features contained in the characterizing part of claim 1.

The spherical joint element and the struts, which are freely pivotable on this within wide limits, not only allow a 360 ° swivel in a swivel plane, but also allow the swivel plane to be tilted in a large area, as will be explained in more detail with reference to the exemplary embodiments. The angle by which the swivel plane can be tilted is only limited by the fact that none of the struts may touch both joint element halves at the same time, since this would short-circuit the lighting system.

The spherical joint element and the two struts which are pivotably arranged on them represent structurally and assembly-technically very simple components which also have a very aesthetically pleasing appearance.

The spherical joint element is preferably divided in an equatorial plane, a disc made of electrically insulating material being arranged in the division plane is. The joint element halves can in each case be glued to the disk or connected in any other way. In one embodiment of the invention, the washer has a threaded connector on each of the side surfaces facing away from one another, which is screwed into a threaded bore of a joint element half. The threaded connectors are preferably formed in one piece with the washer. Another embodiment is described on the basis of an exemplary embodiment.

In a preferred embodiment of the invention, the ball-like joint element is divided essentially transversely to the longitudinal extension of the bracket in the connection area, each bracket section being fastened in each case in one pole of the joint element; each of the struts has an opening in the region of the ball socket for the passage of the associated bracket section. This opening is preferably designed as a longitudinal slot aligned in the longitudinal direction of the strut and closely fitting laterally on the associated bracket section. This allows the two interconnected struts to be pivoted in the plane containing the longitudinal slots, this pivoting being predetermined by the length of these longitudinal slots, as will be explained in more detail in the description of the exemplary embodiments. The struts can be mechanically connected to each other in an electrically insulated manner. For this purpose, at least one connecting strut made of electrically insulating material is preferably provided, which is designed, for example, as a threaded bolt, which passes through mutually aligned bores in the struts and on whose ends projecting beyond the struts, screw nuts are screwed. Another connection of the two struts is preferably via the Lamp itself, which is attached to the same ends of the two struts.

Each strut has means for the mechanical and electrical connection of a lamp pole. The current conduction path in each case runs from one of the current-carrying conductors via the bracket section resting thereon, the joint element half connected thereto and the strut assigned to this to a lamp pole. The invention also allows multiple arrangement of lamps on a bracket assembly. For this purpose, it is provided that the bracket has a first bracket section, the area facing away from the free end resting on a first current-carrying conductor branches into several branches, each of which is connected to a joint element half of an associated joint element, and that the other joint element halves of each joint element each are connected to a bracket section resting on the second current-carrying conductor.

• Figur 1 eine schematische Darstellung einer aus eine Lampe und einem Bügel ge­bildeten Anordnung in einer Seitenan­sicht;
• Figur 2 eine perspektivische Darstellung einer einzelnen Strebe;
• Figur 3 schematisch eine perspektivische Dar­stellung einer anderen Ausführungs­form einer Anordnung aus Lampe und Bügel;
• Figur 4a,4b schematisch eine weitere Ausführungs­form einer Anordnung mit unterschied­licher Anordnung der Bügelabschnitte;
• Figur 5 schematisch eine Lösung für eine Mehrfachanordnung von Lampen;
• Figur 6a,6b in vergrößerter Darstellung ein kugelartiges Gelenkelement;
• Figur 7 ein anderes Ausführungsbeispiel eines Gelenkelements;
• Figur 8 eine Lampenanordnung mit einer Lampe, stromführenden Leitungen und einer Stromversorgung;
• Figur 9 ein Detail der Befestigung eines stromführenden Leiters.

Several embodiments of the invention are shown in the drawing and described in more detail below. Show it:

• Figure 1 is a schematic representation of an arrangement formed from a lamp and a bracket in a side view;
• Figure 2 is a perspective view of a single strut;
• Figure 3 schematically shows a perspective view of another embodiment of an arrangement of lamp and bracket;
• 4a, 4b schematically show a further embodiment of an arrangement with a different arrangement of the bracket sections;
• Figure 5 schematically shows a solution for a multiple arrangement of lamps;
• 6a, 6b an enlarged illustration of a spherical joint element;
• Figure 7 shows another embodiment of a joint element;
• FIG. 8 shows a lamp arrangement with a lamp, current-carrying lines and a power supply;
• Figure 9 shows a detail of the attachment of a current-carrying conductor.

The arrangement shown in Figure 1 comprises a bracket 2, which consists of two interconnected bracket sections 6, 8 which are electrically insulated from one another in the connection region 4 and which are made of electrically conductive material. The arrangement also includes a holding device 10 for holding the lamp 12; the holding device 10 is pivotally mounted on the bracket 2, so that the lamp 12 can be aligned in different directions.

The bracket 2 carries in the connection area 4 an essentially spherical joint element 14 which consists of two joint element halves 16, 18 which are electrically insulated from one another and each electrically conductively connected to a bracket section. The insulation consists of a disk 20 made of electrically insulating material, which is glued to the joint element halves 16, 18 or connected in some other way.

The holding device 10 comprises two struts 22, 24 arranged at a distance from one another and made of electrically conductive material. On the sides of the struts 22, 24 facing one another, a ball socket 23 or 25 (see also FIG. 2) which is complementary to an associated joint element half 16, 18 and which surrounds the associated joint element half is formed. As can be seen in FIG. 1 and FIG. 2, each of the struts 22 and 24 in the region of the ball socket 23 and 25 has an opening 27 and 29 for the passage of the associated bracket section 6 and 8. The openings are aligned in the longitudinal direction of the struts Longitudinal slots, which lie closely on the side of the respective bracket section 6 or 8, so that the entire holding device 10 can be pivoted in the plane containing both longitudinal slots, the possible pivoting angle being limited by the length of the longitudinal slots so that none of the struts 22, 24 which can touch the joint element half assigned to the respective other strut. The two struts 22, 24 are rigidly connected to one another so that they are pivotally but non-detachably mounted on the joint element 14.

The connection of the two struts 22, 24 takes place, on the one hand, via a threaded bolt 26, which penetrates the mutually aligned bores 28, 30 in the upper ends of the struts 22, 24 in FIG. 1, and spherical screw nuts 32, 34 are screwed onto the projecting ends thereof. The lower ends of the struts 22, 24 in FIG. 1 are provided with receiving bores 36, 38 directed in the longitudinal direction of these struts, which are used to receive the pin-shaped lamp poles 40, 42; the lamp 12 thus simultaneously serves to connect the lower ends of the struts 22, 24 to one another.

Figure 2 shows an enlarged view of the strut 22 with its upper end through bore 28 for receiving the threaded bolt 26, with the ball socket 23 formed in the lower region, the opening 29 formed in the region of the ball socket 23 for the passage of the bracket portion 6 and with the Location bore 36 for receiving the lamp pole 40; as can be seen in Figure 2, is transverse to Receiving bore 36 is provided with a threaded bore 44, into which, for example, a grub screw for securing the lamp pole 40 can be screwed into the receiving bore 36, as was not shown in detail. A bore which is the same as the threaded bore 44 is preferably also provided in the second strut 24.

The bracket 2 in FIG. 1 has approximately the shape of an arch lying in one plane with two symmetrical arch halves connected to one another in the center of the arch. The bracket 2 has a straight central section 46 in the connecting area 4, to each of which a straight, sloping bracket leg 48, 50, which is inclined to the central section 46, connects to each side, which merges into an opposite end section 52, 54 which is parallel to the central section 46 . At the ends of the end sections 52, 54 are arranged thickenings 56, 58 which, in the exemplary embodiment shown, are designed as spherical screw nuts 32, 34, which are screwed onto the end sections 52, 54.

As can be seen in FIG. 1, the bracket 2 rests with its end sections 52, 54 on a current-carrying conductor 60 and 62, respectively. The current accordingly flows from the conductors 60 and 62 via the bracket sections 6 and 8 connected to them, the joint element halves 16 and 18 and the struts 22 and 24 to the lamp poles 40, 42.

The holding device 10 with the lamp 12 can be pivoted through 360 ° about an approximately perpendicular main plane to the central section 46; because of the ball-joint-like mounting of the holding device 10, this can also be pivoted through 360 ° in each case in the planes tilted in the direction of the arrow 64 in relation to the main plane described. In the embodiment shown in Figure 1, there is the possibility of holding device 10 to tilt relative to the described main plane by about 45 ° to the right or left in the direction of arrow 64 until the bracket sections 6 and 8 abut the upper and lower boundaries of the openings 27 and 29, respectively.

Figure 3 shows another embodiment of a bracket assembly. The bracket 72 is in turn composed of two bracket sections 74, 76. The joint element of the bracket 72 in the connection area of the two bracket sections 74, 76 corresponds to the arrangement described with reference to FIGS. 1 and 2, so that it does not have to be shown and described again. The bracket 72 is again approximately arch-shaped with two symmetrical arch halves connected to one another in the middle of the arch, but in the connection area it is shaped as an approximately Z-shaped cranked center section 78 with a central leg 80 and two end legs 82, 84 in one plane. Similar to the exemplary embodiment shown in FIG. 1, the end legs each have a straight-line stirrup leg 86 or 88, which is inclined to the plane of the central section 78, and each transition into end sections parallel to the plane of the central section 78, of which only the end section 90 is shown.

As can be seen from a comparison of FIGS. 1 and 3, the stirrup legs 48, 50, on the one hand, and 86, 88, on the other hand, run essentially perpendicular to the end legs 82, 84 in the exemplary embodiment according to FIG. The main pivoting plane of the holding device 92 carrying the lamp 94 is perpendicular to the central leg 80, it being possible for the holding device 92 to tilt out of the main pivoting plane in the direction of the arrow 96, as has already been described with reference to the exemplary embodiment in FIG.

Otherwise, the structure of the holding device 92 and of the joint element, not shown, which supports it is identical to the exemplary embodiment according to FIG. 1.

FIG. 4a shows a holding bracket arrangement 100 for a lamp 102 with a bracket 104 and a holding device 106 pivotably mounted thereon. The holding device 106 corresponds to the device described with reference to FIGS. 1 and 2 and is in the manner also described, but not shown here in detail a spherical joint element is pivotally mounted.

The bracket 104 consists of two bracket sections 108, 110, which are connected to one another in an electrically insulating manner via the joint element (not shown). The bracket 104 has a rectilinear center section 114 in the connecting region 112, and is adjoined on both sides by an upwardly directed, concave bracket leg 118, 120. The free ends of each stirrup leg run substantially parallel to the central section 114. With 122,124 are the current-carrying conductors on which the stirrup legs 118,120 rest.

Figure 4b shows the same bracket arrangement as Figure 4a, but the two bracket sections 108, 110 are connected to the joint element, not shown, such that the curved bracket legs 118, 120 form a center section 114b, to which the straight sections, which in Figure 4a form the center section 114, are formed have to connect to the outside.

As FIGS. 4a and 4b show, both the free ends of the curved stirrup legs 118, 120 and the straight leg are each threaded 126 and 128, respectively see; these two threads 126, 128 are of the same design, so that they can both be screwed into the joint element (not shown) on the one hand and on the other hand can serve to receive the balls 130 each closing the bracket sections 108, 110.

FIG. 5 shows a bracket arrangement 132 for two lamps 134, 136. A first bracket section 138 branches in its region 142 facing away from the end resting on the current-carrying conductor 140 into two branches 144, 146, each of which in a manner already described with reference to FIGS. 1 and 2 with a joint element half of a joint element for the pivotable mounting of the holding device 148 or 150 are connected. The respective other joint element halves are each connected to a bracket section 152 or 154, which rest on the second current-carrying conductor 156. In this way, the two lamps 134 and 136 are connected in parallel to one another.

Figure 6a shows an enlarged view of the joint element 14 of Figure 1. It consists of two joint element halves 16, 18, between which a disc 20 is arranged made of insulating material. The disk 20 is provided on its side surfaces facing away from one another with threaded connections 160, 162, which can be screwed into threaded bores 164 and 166 of the joint element halves 16 and 18, respectively. The threaded bores 164 and 166 also serve to screw in the bracket sections 6 and 8, which are each provided with a thread (e.g. 168) at their ends assigned to the joint element.

If the disk 20 defines an equatorial plane of the spherical joint element 14, the bracket sections 6 and 8 are each attached to poles of this spherical joint element. As can be seen in FIG. 6a, this is spherical Joint element 14 is approximately cylindrical in the equatorial area, so that it does not form a perfect sphere. This measure ensures that, even with relatively large swivel angles of the holding device in the direction of arrow 64 (see FIG. 1), the struts 22, 24 do not come into contact with the joint element half 16 or 18 assigned to the other strut.

FIG. 6 b shows the joint element 14 in a view in the direction of the arrow 170, wherein in particular the threaded bore 164 for receiving the bracket section 6 can also be seen.

FIG. 7 shows another exemplary embodiment of a joint element 200 with two joint element halves 202, 204. The joint element half 204 is provided with a receptacle 206 which is open towards the other joint element half and into which an approximately pot-shaped separating insert (208) made of insulating material is inserted. A plug pin 210 formed on the other half of the joint element engages in the separating insert 208. The fits between the separating insert 208 on the one hand and the joint element halves 202, 204 on the other hand are press-fit fits, so that the joint element 200 can be assembled in a simple manner by plugging them together.

As in the example described with reference to FIG. 6a, a bracket section can be screwed into the threaded bores 212 and 214 of the two joint element halves 202 and 204, respectively. These always remain electrically insulated from one another by the separating insert 208.

Figure 8 shows a lamp arrangement according to Figure 1, the is placed on two current-carrying conductors 60, 62. A transformer arranged in a housing 220 serves for the power supply of the two conductors 60, 62, the two current outputs of which are connected to the two bracket sections 222, 224. These bracket sections 222, 224 can be produced from the same basic materials or individual parts as, for example, the bracket sections 118, 120 or the balls 130 in FIG. 4a. The transformer, not shown, in the housing 220 is connected, for example, to normal household electricity.

In the exemplary embodiment shown, the conductors 60, 62 are in turn made from the same wire material as the bracket sections 222, 224, and are each provided with a ball 226 at their ends (see FIG. 9). A sleeve 228 is threaded onto the conductor 62 such that the ball 226 is located inside the sleeve 228 and the conductor projects outwards through the outlet opening 230 of the sleeve 228, which has a smaller diameter than the ball 226. The sleeve is provided with an internal thread and is screwed onto the external thread 232 of a connection piece 234 which can be fastened to a wall. By screwing on or unscrewing, the voltage of the conductor 62 can be adjusted sensitively.

Claims (19)

1.Lamp arrangement with a bracket which can be suspended between two current-carrying conductors and which consists of bracket sections made of electrically conductive material which are connected to one another and are electrically insulated from one another in the connection area, and with a holding device for holding a lamp which is pivotably mounted on the bracket in the connection area, the holding device Means for the electrical connection of a bracket section with an electric lamp pole each, characterized in that the bracket (2) in the connection area (4) of two bracket sections (6, 8) carries an essentially spherical joint element (14) which consists of two electrically insulated from one another , each with a bracket section (6, 8) electrically connected joint element halves (16, 18) that the holding device (10) two spaced apart, electrically isolated interconnected struts (22, 24) made of electrically conductive material l comprises, on the sides facing each other one to a joint element half (16, 18) complementary ball socket (23, 25) is formed, and that each strut (22, 24) means (36, 38) for the mechanical and electrical connection of a Lamp poles (40, 42). 2. Lamp arrangement according to claim 1, characterized in that between the joint element halves (16, 18) of the joint element (14) a separating insert (2) made of electrically insulating material is arranged. 3. Lamp arrangement according to claim 2, characterized in that the separating insert is a disc (20), each with a threaded connector formed on each of the mutually facing side surfaces, which is screwed into a threaded hole formed on a joint element half (16, 18). 4. Lamp arrangement according to one of claims 1 to 3, characterized in that the bracket sections (6, 8) at their connection region (4) facing end carry a thread with which they are screwed into a threaded hole formed on a joint element half. 5. Lamp arrangement according to one of claims 1 to 4, characterized in that the spherical joint element (14) is divided substantially transversely to the longitudinal extension of the bracket (2) in the connecting region (4) that each bracket section (6, 8) in each case in one Pole of the joint element (14) is fixed and that each strut (22, 24) in the region of the ball socket (23, 25) has an opening (27, 29) for the passage of the associated bracket section (6, 8). 6. Lamp arrangement according to claims 5, characterized in that the opening (27, 29) of each strut (22, 24) as in the longitudinal direction of the strut (22, 24) aligned, laterally on the associated bracket portion (6, 8) closely fitting longitudinal slot is. 7. Lamp arrangement according to one of claims 1 to 6, characterized in that the struts (22, 24) are connected to one another by at least one connecting strut (26) made of non-conductive material. 8. Lamp arrangement according to claim 7, characterized in that the connecting strut (26) is designed as a threaded bolt (26) which passes through the aligned bore (28, 30) in the struts (22, 24) and on the outside thereof via the struts (22, 24) projecting ends screw nuts (32, 34) are screwed on. 9. Lamp arrangement according to one of claims 1 to 8, characterized in that the struts (22, 24) at the same ends by the connectable to these two ends lamp (12) can be connected to each other. 10. Lamp arrangement according to one of claims 1 to 9, characterized in that the bracket (2) is arc-shaped with two interconnected in the middle of the arc, to a symmetrical plane through the center of the arc symmetrical arc halves. 11. Lamp arrangement according to claim 10, characterized in that the bracket (2) in the connecting region (4) of the two bow halves is formed as a straight central section (46) and that there is a straight, oblique to the central section (46) on both sides Middle section (46) of standing stirrup leg (48, 50) connects, which merges into a bent end section (52, 54) parallel to the middle section (46). 12. Lamp arrangement according to claim 10, characterized in that the bracket (72) in the connecting region of the two bracket sections (74, 76) as an approximately Z-shaped, in-plane central section (78) with a central leg (80) and two end legs (82, 84) and that each of the end legs (82, 84) is adjoined by a straight stirrup leg (86, 88) which is inclined to the plane of the central section (78) and which in each case is bent into a plane to the plane of the central section ( 78) passes parallel end section (90). 13. Lamp arrangement according to one of claims 1 to 9, characterized in that the bracket has a first bracket section (138), the free end lying on a first current-carrying conductor (140) area branches into a plurality of branches (144, 146) , each of which is connected to a joint element half of an associated joint element, and that the other joint element halves of each joint element are each connected to a bracket section (152, 154) resting on the second current-carrying conductor (156). 14. Lamp arrangement according to one of claims 1 to 13, characterized in that thickenings (56, 58) are formed on the free ends of the bracket sections resting on the current-carrying conductors. 15. Lamp arrangement according to claim 14, characterized in that the free ends of the bracket sections Have threads and that the thickened portions (56, 59) are designed as screw nuts. 16. Lamp arrangement according to one of claims 8 to 14 and claim 15, characterized in that the screw nuts (32, 34) for the connecting strut (26) and the screw nuts (56, 58) for the free ends of the bracket sections are the same and have a spherical shape . 17. Lamp arrangement according to one of claims 4 to 14 and one of claims 15 and 16, characterized in that the threads (126, 128) of the end facing the connection region and the free end of each bracket section (110) are the same. 18. Lamp arrangement according to one of claims 10 to 17, for lamps with two parallel, pin-shaped lamp poles, characterized in that at the ends formed for the lamp connection of the struts (22, 24) on the end face one in the longitudinal direction of the struts (22, 24) aligned receiving bore (36, 38) is provided for receiving a lamp pole (40, 42) and that a threaded bore (44) for a clamping screw intended for clamping a lamp pole (40, 42) is formed transversely to each receiving bore. 19. Lamp arrangement according to one of claims 1, 2 and 4 to 18, characterized in that the separating insert has essentially the shape of a pot which is inserted into a receptacle formed on one of the joint element halves and into which a plug pin formed on the other joint element half intervenes.

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