EP0392198B1 - Elongated light fixture - Google Patents

Description

The invention relates to a lamp according to the preamble of claim 1.

Luminaires of this type, which are designed in particular as linear luminaires, have a trough-like housing to which a trough cover made of transparent material is detachably fastened; the trough-like housing is usually made of special plastic and the cover trough is articulated on one longitudinal edge of the housing and can be closed on the other longitudinal edge. In such a luminaire one or more fluorescent lamps can be used, with a socket for each fluorescent lamp being provided at each end, so that opposite sockets form a socket pair which is used for receiving, holding and electrically supplying the fluorescent lamp. The sockets at one end of the housing are attached to a holder support, hereinafter also referred to as support, which is fixed to the housing.

The carrier for one or the two sockets is essentially an L-shaped component, one (first) leg section of which runs parallel to the bottom of the housing and is fastened to it. At the other (second) leg section, one or both of the sockets for the fluorescent lamps are attached, the sockets being, for. B. have a plastic body in which a contact for a single-pin fluorescent lamp is introduced. The socket is slidably attached to the leg extending perpendicular to the first leg section.

A clamp module is attached to the first leg section and a switch, which is actuated when the tub is closed, is attached to the surface of the second leg section away from the lamp. These individual parts, namely the actual carrier, the terminal block and the switch, have to be manufactured separately and assembled in several work steps. Apart from the assembly process, there is the problem that wiring is required: a line must be led from the fluorescent lamp to the terminal block and from this terminal block back to the switch, which represents a "tangle" of cable lines in the housing.

The object of the invention is to provide a fluorescent lamp of the type mentioned, in which the assembly is simplified and, moreover, the cable lines are guided in a certain way.

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

The switch is received in a compartment formed within the first leg section and can be cast into it after connecting the leads leading to the connection terminals of the switch at these connection terminals. This is not only a simplification, but when the switch is cast in, an explosion protection is also achieved if the other regulations are observed, in particular as regards the dimensioning of the air gap of the switching plunger protruding from the switch. An alternative embodiment of the invention can be that the switch is locked on the first leg portion of the carrier. This firm locking of the preferably pressure-resistant switch makes installation considerably easier.

In an advantageous embodiment of the invention according to claim 5, channel-like guides for the conductors are provided on the carrier, so that the conductors themselves are no longer laid freely within the housing, but practically disappear within the carrier, so that an optical-aesthetic improvement is also achieved is.

A particularly advantageous embodiment of the invention can go according to claim 6 that at the free end of the first leg section penetrating and held therein clamping body are provided, and that this clamping body above and below the second leg section clamping screws are provided, on which electrical conductors can be clamped are.

Because the individual clamping bodies are integrated into the second leg section in the manner of a clamping strip, a further simplified production is also possible. It is no longer necessary to run one on your own screw the terminal block to be manufactured onto the carrier; rather, one obtains that the clamping bodies reach through the first leg section, so that one clamping screw each can be screwed into the clamping bodies at the top and bottom, integrating two clamping strips in the carrier.

The fact that the connecting conductors between the connection terminals and the clamping screws are designed as flat conductor rails and are laid in grooves in the carrier which are adapted to them, further simplifies the manufacture and assembly of the connections by prefabrication.

In order to improve the routing of cable lines that are still to be laid, at least one semi-cylindrical projection, which forms a conductor guide channel, is attached in a particularly advantageous manner on the side of the second leg section facing away from the first leg section. This means that all cable lines are routed and virtually integrated into the carrier, which means that the carrier forms a preassembled and storable unit.

Further advantageous embodiments of the clamping body can be found in claims 9 and 10.

Above it is stated that two L-shaped supports are provided in a linear luminaire; there is also the possibility of joining the two L-shaped supports to form a unit via an intermediate piece; the terminal strips are arranged at such a distance from the second leg sections oriented perpendicular to the intermediate piece, as in the case of the L-shaped carriers alone without an intermediate piece. The intermediate piece located between them, which can either be produced in one piece with the L-shaped supports or to which the two L-shaped supports can be attached, can then serve as an assembly chassis for the supply element and the like.

A particularly advantageous development of the invention can be found in claim 13.

Characterized in that the carrier (or socket holder) are articulated at the ends of the cover part, they can be folded up after removing the lamp, so that connecting cables to the socket holders and to the terminal strips connected to the socket holders without removing the entire intermediate piece is possible.

So that the holder can be easily folded up, they are locked in the operating position and acted upon by one or more springs in the direction of folding up. So that the frame carrier are shake-proof and firmly arranged on the intermediate piece.

Each luminaire necessarily has a reflector so that light emitted by the fluorescent lamp is not lost, but is emitted to the front as "usable" light.

According to the invention and in a particularly advantageous development of the invention, the intermediate piece and the reflector are a part such that the reflector serves practically as an intermediate piece to which the carriers are attached. The reflector is thus matched to the clear inner contour of the housing in the area of the free housing contour.

The intermediate piece, which covers the housing and can be used or is used as a mounting chassis, thus forms the reflector or vice versa, so that the housing is covered as a whole with only one element, namely the reflector, which leads to a further considerable Simplification of assembly and disassembly leads.

The holder itself is inserted into recesses on the reflector, so that the holder itself can be part of the reflector.

In order to lock the holder on the reflector, there is at least one resilient arm with locking lugs on the holder, which cooperate with a recess arranged on the reflector and hold the holder on the reflector in the operating position. As already mentioned above, the locking lugs work together with the springs so that they serve to securely fix the frame carrier.

The invention and further advantageous refinements and improvements of the invention are to be explained and described in more detail with reference to the drawing, in which some exemplary embodiments of the invention are shown.

Figur 1

eine perspektivische Aufsicht auf einen Träger gemäß der Erfindung,

Figur 2

eine Schnittansicht gemäß Schnittlinie II-II der Figur 1,

Figur 3

eine Aufsicht gemäß Pfeilrichtung III der Figur 1,

Figur 4

eine Aufsicht gemäß Pfeilrichtung VI der Figur 1,

Figur 5

eine Schnittansicht gemäß Schnittlinie V-V der Figur 2,

Figur 6

eine perspektivische Darstellung zweier Träger mit dazwischen gefügtem Zwischenstück,

Figur 7

eine aufgeschnittene perspektivische Teilansicht eines Leuchtengehäuses für eine Langfeldleuchte,

Figur 8

eine perspektivische Teilansicht auf den Reflektor von unten, mit eingesetztem Fassungsträger und

Figur 9

eine Schnittansicht gemäß der Schnittlinie IX-IX der Figur 8.

Show it:

Figure 1

a top perspective view of a carrier according to the invention,

Figure 2

2 shows a sectional view along section line II-II of FIG. 1,

Figure 3

2 a top view according to arrow direction III of FIG. 1,

Figure 4

2 is a top view according to arrow direction VI in FIG. 1,

Figure 5

3 shows a sectional view according to section line VV of FIG. 2,

Figure 6

2 shows a perspective illustration of two carriers with an intermediate piece inserted between them,

Figure 7

2 shows a cutaway perspective partial view of a luminaire housing for a linear luminaire,

Figure 8

a partial perspective view of the reflector from below, with inserted holder and

Figure 9

6 shows a sectional view along the section line IX-IX of FIG. 8.

Within the housing 11 of a linear luminaire (not shown in more detail) there are two supports 12, also called mount supports, on the base part 10, of which only one support is shown in FIG. This carrier has an L-shape with a first leg section 13 and a second leg section 14. On the second leg section 14, which is oriented perpendicular to the housing base 10, two sockets 15 and 16 are arranged next to one another. These sockets 15, 16 have a plastic body 17, in which a socket 18 is inserted for receiving the single pin 19 of a fluorescent lamp 20, shown in broken lines. The plastic body 17 has a collar 21 and a mushroom-like plate 22 in the region of the socket 19; by means of a conical helical spring 23, which is arranged between the plate and an annular recess 24 of the second leg section 14, the plastic body 17 is acted upon in such a way that the collar 21 is pressed against the outer surface of the leg region 14.

The opening through which the plastic body 17 extends is shown in FIG. It can be seen that a plurality of slots 26 open into a central opening 25; between the slots 26 resilient flags 27 are formed, which spring open when the plastic body 17 is inserted and let the collar 21 pass through.

In the drawing, only two sockets for two fluorescent lamps are shown. There is of course also the possibility of providing a total of three such openings with the slots, so that if only one fluorescent lamp is to be inserted into the lamp, a socket can be inserted into the central opening - of these three.

The first leg section 13 has on its upper side, on the side on which the second leg section 14 stands, a receiving space 28 into which a switch 29 is inserted, the switching pin 30 of which engages through a boundary wall 31 of the receiving space 28. On the bottom side of the first leg section 13 there is a U-shaped, downwardly open guide 32 downward and towards the rear of the second leg section 14, into which an actuating element 33 of a locking mechanism (not shown in more detail) engages in such a way that when the cover trough is locked the linear light, the actuating pin 33 comes to rest against the switching pin 30 and actuates the switch 29 via the latter. After the switch 29 has been inserted, the space 28 is filled with casting resin from above.

On the back of the second leg section there are semi-cylindrical projections 34, each of which surrounds a cable channel 35, through which a lead wire 36 connected to the socket 15, 16 passes and leads there to terminal strips described below. It is possible to provide two or three semi-cylindrical projections 34, that is, corresponding to the number of fluorescent lamps used.

To form this terminal block, projecting partitions 40, 41, 42, 43 are formed on the first leg section 13 in the opposite direction from the upper and lower side of the leg section 13, which serve as partitions between two adjacent clamping screws 44 and 45. The partitions run parallel to one another in the direction of extension of the first leg section 13.

Reference is made to FIG. 3. Above and below the first leg section 13 there are partition walls 40 and 41, and 42 and 43, which are in alignment upwards and downwards. A profiled opening 46 is between the two partition walls in the region of the free end of the leg section provided, which in the lower region, that is to say in the region between the two lower partition walls 41 and 43, has a radially inwardly facing rim 47 which is formed on the lower side wall. Thus, while the area 46 is profiled, preferably square, the inner cross section of the rim 47 is circular, and accordingly the clamp has a clamping body 48 with a body section 49 with a rectangular or quadrangular cross section, on the one end face of which is a projection with a circular cross section 50 are integrally formed, the circumferential diameter of section 49 being significantly larger than that of the section 50, the latter corresponding to the inside diameter of the rim 47. The clamping body 48 is penetrated by a threaded bore 51 into which clamping screws 52 and 53 can be screwed from above and below.

While the clamping body 48 cannot fall down because of the projection 47, the clamping body is fixed upwards by a spring holding element 54 which is U-shaped, the two legs engaging in recesses 55 and 56 on the walls 40 and 42, whereby assign the recesses to each other and the dimensions of the legs 54 are adapted. Due to the resilient design of the securing element 54, the legs engage resiliently in the recesses 55 and 56.

As can be seen from FIG. 2, the line 36 runs from the socket 15 to the lower clamping screw 53 and from there via strip-shaped connecting lines 60 to the switch 29; these connecting lines can be clearly seen in FIG. 1.

Figure 5 shows a sectional view along section line V-V. On the underside of the floor, two channels 61 and 62 running through at the bottom are provided, which channels lead to the clamping screws 53. The space 28 for the switch 29 shown schematically is located between the two channels 61 and 62.

FIG. 6 shows two L-shaped supports 70 and 71, which correspond to the supports according to FIGS. 1 to 5, the supports being connected to one another by means of an intermediate piece 72 located between them. The intermediate piece 72 thus borders on the terminal strips 73 and 74, which correspond to the terminal strips in FIG. 3, on the intermediate piece 72 electronic components 75 are placed, which serve for the electrical supply of the fluorescent lamps. If a lock is to be provided between the housing and the trough of the linear light, this lock can also be guided in the mounting chassis 72.

In this way, a linear luminaire is created which has a trough made of transparent material and a housing 11. At the bottom 10 of the housing, supports for fluorescent lamps 20 are attached, which are L-shaped and have channels 35, 61 for electrical lines, a receiving space 28 for a switch 29 and clamping bars 48 formed from the first limb section 13. All components are integrated in the carrier 12 in such a way that a uniform, easy-to-use and storable component is created.

Reference is now made to FIGS. 7 to 9, in which a particularly advantageous embodiment of the invention is shown.

In an elongated trough-shaped housing 100 (see FIG. 7), which has on its free circumferential edge two projections 101 and 102 running in the direction of the side walls of the housing 100, which form a U-shaped groove 103 for receiving a seal with one another Cross-section essentially U-shaped elongated rectangular reflector 104 is used, which has on the outer surface of the web 105 two groove-like depressions 106 and 107 running in the longitudinal direction of the reflector 104, which for the reflection of one Lamps not shown, outgoing light rays form a reflection surface. The free ends of the legs of the U-shape are directed toward the inner bottom of the housing 100 or stand there. At both ends of the reflector 104 there are recesses in its web 105 containing the reflecting surface, of which only the recess 108 in which a frame carrier 109 is inserted is visible at the left end in FIG. 7. The mount carrier 109 has an area 110 which corresponds to and is aligned with the reflection surfaces 106 and 107, and thus also serves as a reflection surface, and an area 111 which runs perpendicularly to it and protrudes vertically from the reflection area and in which openings 112 are made, which correspond to the second leg section 14 (see also FIGS. 1 to 6) and serve to accommodate a socket (not shown).

FIG. 8 shows the reflector 104 from below. One recognizes on the U-shaped reflector 104 its web area 105 and legs 113 and 114 which run perpendicular to the surface orientation formed by the web area and which are connected to one another at the free end of the reflector by a connecting leg 115, so that the reflector as such takes on a tub-like shape . The legs 113 and 114 and the connecting legs 115 extend in the direction opposite to the region 111 with the openings 112. It can also be seen that the frame carrier 109 with the region 111 with the holes 112 and the reflection region 110 are partially folded down from below.

Reference is now made to FIG. 9.

In the region of its free end, the reflector 104 has a recess 120 (corresponds to the recess 108 in FIG. 7), into which the mount carrier 109 with the region 111 is inserted. On the inner surface of the legs 113, 115 and the leg 114, which is not visible in FIG. 9, a rim 121 runs around perpendicular to the leg extension and parallel to the free end edge of the legs, the inner edge 122 of which delimits a clear area which is smaller than the outer contour of the frame carrier 109, so that the frame carrier 109 can rest on this inboard 121 with an edge wall 123 each. These edge walls 123 are formed on the edges of the reflection area 110, which run perpendicular to the area 111 and in the longitudinal direction of the reflector. They have tabs 125 running perpendicular to the reflection surface 110, which hold at their ends a shaft or axis 126 running approximately parallel to the area 110 and parallel to the area 111. The length of the axis 126 is greater than the distance between the tabs 125. The axis 126 is aligned transversely to the legs 113, 114. The total length of the pin or the shaft 126 corresponds approximately to the inner distance between the legs 113 and 114. The rim 121 goes into a region in which the edge 127 of the recess 120 located away from the associated end of the reflector 104 is in one Bottom surface 128 above, the distance between the rim 121 from the free end of the legs 113, 114 is greater than the distance between the intermediate bottom 128 from this free end, so that an offset 129 is formed with a contour 130 adapted to the shaft 126. On the surface of the intermediate wall 128 which faces the ends of the legs 113, 114 Guide blocks 130 and 131 are formed, the spacing of which is smaller than the spacing of the tabs 125, so that in the assembled state they lie within the wall 123 or tabs 125. The guide blocks 130, 131 project beyond the offset region 129 in the direction of the free end of the reflector 104 and have on the side facing the reflection surface a groove 133 adapted to the outer diameter of the shaft 126, so that a bearing point is located between the region of the offset 130 and the groove 133 is formed for the shaft 126.

The area 111 continues beyond the reflection surface 110 in an edge wall 140, and at one end or possibly also at both ends of this edge wall 140 in the area of the edge wall 123 there is a leaf spring 141 formed on the extension 140, which is mounted in the Condition against the edge 121 comes to mind. The end of the mount support 109 facing the end of the reflector has arms 145 and 146 which are directed towards the ends of the legs 113, 114 and which engage behind edges 147 and 148 on the rim 121, which are formed by recesses 149 and 150.

For assembly, the frame carrier is locked with the shaft 126 against the offset 130 and under the grooves 133, and for fastening the frame carrier 109, the arms are latched behind the recesses or edges 147 and 148 with the latching lugs. Due to the force of the spring 141 and the locking by the locking arms 145, 46 and by inserting the shaft between the offset 130 and the groove 133, the frame carrier 109 is fastened in a vibration-proof manner in the reflector 104. The latching point with latching arms 145 and 146 must be released in a suitable manner for opening. By the force of the spring 141 the frame carrier is lifted up, whereby the shaft 126 can rotate in its bearing between the groove 133 and the offset 130; then the frame carrier 109 can be pulled out. On the surface facing the ends of the legs 113, a switch 150 can be locked, which is used to switch off the electrical power supply to the fluorescent lamps, not shown, when the cover trough, not shown, is to be lifted off the housing.

In FIGS. 7 to 9, only one mount carrier is shown drawn on the reflector 104. Of course, two frame supports 109 formed in the same way are attached to the two ends of the elongated rectangular reflector 104 in the manner described in FIGS. Folding up here means that the holder 109 is folded out of the reflector in the direction of the region 111 arranged perpendicular to the holder, to which the holder for possibly fluorescent lamps can be attached.

It is also not shown in detail that the reflector 104 is fastened together with the mount carriers 109 to the bottom of the housing 100 by means of screws which reach through the web 105.

Claims (23)

1. Lamp with a trough-like housing (11) and a covering trough which can be connected thereto and consists of transparent material, having carriers (12) which have approximately an L-shape and each have a leg section (14) aligned perpendicularly with respect to the housing floor (10), to which leg section (14) the mounts (15, 16) are attached, having at least one switch (29) which is fastened to the carrier (12) and can be actuated by the covering trough or a locking mechanism in order to lock the covering trough to the housing (11), and having a reflector, characterised in that the switch (29) is received attached to the leg section (13) (first leg section 13), which extends parallel to the floor of the housing (11), of the carrier (12) on its side facing away from the floor, and in that only the switching pin (30) protrudes out of the carrier.
2. Lamp according to Claim 1, characterised in that the switch (29) is received in a receptacle space (28).
3. Lamp according to Claim 2, characterised in that the receptacle space (28) of the switch (29) is filled with casting resin.
4. Lamp according to Claim 1, characterised in that the switch (29) is locked securely to the first leg section (13) of the carrier (12).
5. Lamp according to one of Claims 1 to 4, characterised in that channels (35, 61, 62) in which electrical lines (36) are guided between the mount, the switch and the strip terminals are arranged on the carrier (12).
6. Lamp according to one of the previous claims, characterised in that terminal bodies (48) which penetrate the first leg section (13) and are held tight therein are provided at the free end of the first leg section (13), and in that terminal screws (52, 53) are provided on these terminal bodies above and below the first leg section (13), to which screws electrical conductors (36) can be clamped tight.
7. Lamp according to Claim 6, characterised in that the connecting conductors between the connecting terminals of the switch (29) and the terminal screws (53, 44, 55) are constructed as flat conductor bars (60) and are laid in grooves matched thereto.
8. Lamp according to one of the previous claims, characterised in that at least one semi-cylindrical formed-on element (34) is attached on the side, facing away from the first leg section (13) and the fluorescent lamp, of the (second) leg section (14) which is aligned perpendicularly to the floor of the housing, the said formed-on element (34) forming a conductor guiding channel (35).
9. Lamp according to one of the preceding claims, characterised in that the terminal body (48) has a first, preferably profiled section (51) with a larger diameter and a second, preferably circular section (50) with a smaller diameter, in that the opening (46) in which the terminal body is received has a first opening section which is matched to the first terminal body section and a second opening section which is matched to the second section of the terminal body so that the inserted terminal body is held securely on that side on which the second opening section is provided.
10. Lamp according to Claim 9, characterised in that the first terminal body section is held in its recess by means of a spring holding element (54) which is snapped onto the first leg section (13).
11. Lamp according to one of the previous claims, characterised in that two carriers (70, 71) are connected to one another by means of an intermediate element (72) whose length corresponds to the length of the fluorescent lamps, or in each case one carrier is formed onto the two ends of the intermediate element.
12. Lamp according to Claim 10, characterised in that the intermediate element (72) is U-shaped and serves to receive electrical components for supplying the fluorescent lamps.
13. Lamp according to one of Claims 11 and 12, characterised in that the mount carriers (109) are attached to the ends of the intermediate element (104) in an articulated fashion so that the carriers (109) can be folded up after the at least one fluorescent lamp is removed.
14. Lamp according to Claim 3, characterised in that the carriers (109) can be acted on in a resilient fashion in the direction of folding up and are locked in the operating position.
15. Lamp according to Claims 13 and 14, characterised in that the intermediate element and the reflector (104) are one component such that the reflector (104) is matched to the inner clearance contour of the housing (100) in the region of the free housing edge.
16. Lamp according to Claim 15, characterised in that the reflector (104) has at its ends in each case one recess (108, 120) into which in each case one carrier (109) is inserted.
17. Lamp according to Claim 16, characterised in that at least one spring (114) which is located between reflector (104) and carrier (109) is provided on each carrier.
18. Lamp according to Claim 5, characterised in that at least one resilient arm (145, 146) with locking nose is formed onto each carrier, which arm (145, 146) interacts with a recess formed on the reflector (104) and holds the carrier (109) securely on the reflector in the operating position counter to the force of the spring (114).
19. Lamp according to one of the preceding claims, characterised in that each carrier (109) has a reflection region (110) which is flush with the reflection face of the reflector (104).
20. Lamp according to one of the preceding claims, characterised in that a shaft (126) which extends transversely with respect to the carrier (109) is provided on the carrier (109), which shaft (126) is rotatably mounted in a bearing point (131, 132; 130) arranged on the reflector (104).
21. Lamp according to Claim 20, characterised in that an intermediate floor (128) is formed onto the reflector (104) on which floor (128) a circular arc-shaped contour (130) which is matched to the shaft (126) is arranged, and in that at least one bearing block (131, 132) is provided on the intermediate floor (128), the said bearing blocks (131, 132) each having a groove (133) which, together with the contour (130) rotatably bear the shaft (126).
22. Lamp according to one of the preceding claims, characterised in that, in the region of the recess (108, 120), an edge rim (121) which extends all around on the inside is provided on the reflector, on which edge rim (121) the carrier (109) rests.
23. Lamp according to Claim 22, characterised in that the spring (114) is constructed as a leaf spring which is formed onto the carrier (109) and rests against the edge rim (121) in a resilient fashion.

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