ES2829646T3 - Longitudinal luminaire - Google Patents

Abstract

Longitudinal luminaire (10) comprising a cylindrical casing (12) extending in a longitudinal direction (X), said casing (12) being at least partially transparent, and a lighting device (14) arranged inside the casing (12), the lighting device (14) and the housing (12) being assembled only with the help of a plurality of brackets (16), a cover (20a, 20b) mounted on one end of the housing (12aa), the cover (20a, 20b) being fixed to at least one bracket (16), and at least one switch (34) cooperating with the cover (20a) when the cover (20a) is mounted on the housing (12), in where when the cover (20a) is mounted on the housing (12) the switch (34) is configured to supply the lighting device (14) with electric current, while when the cover (20a) is removed from the housing (12) the switch is configured to isolate the lighting fixture (14).

Description

DESCRIPTION

Longitudinal luminaire

Technical sector

The invention relates to the field of luminaires and, more particularly, to the field of longitudinal luminaires, specifically, but not exclusively, for industrial applications, for example, in an explosive environment.

State of the art

The manufacture of known longitudinal luminaires is often complex, lengthy and expensive. Indeed, the number of pieces is generally high, while the assembly operations generally comprise at least one gluing step, the adhesive being expensive and the drying time long. Therefore, there is a need in this regard. Documents US 4,092,706, US 3,242,331, US 2013/0093309 A1 and EP 2816281 A1 show longitudinal luminaires known in the prior art.

Object of the invention

One embodiment refers to a longitudinal luminaire comprising a cylindrical housing extending in a longitudinal direction, said housing being at least partially transparent, and to a lighting device arranged inside the housing, wherein the lighting device and the housing are assembled only with the aid of a plurality of brackets.

The housing is understood to be an outer housing that forms an envelope that receives the lighting device and isolates it from the outside environment. The housing has a cylindrical shape, the cross section of which in the longitudinal direction can be circular, but not necessarily. Thus, the casing is in the form of an open profile at its two longitudinal ends. Of course, the housing is totally or partially transparent to allow the light emitted by the lighting device to pass through. According to a variant, the housing is completely transparent. A single longitudinal end of the housing can be open or the two longitudinal ends are open.

A plurality of brackets, that is to say at least two brackets, allow the lighting device to be assembled to the housing, the lighting device being housed inside the housing. In this way, the lighting fixture is mounted inside the housing through the brackets. In other words, the lighting device is mounted on the brackets, which in turn are mounted on the housing. Consequently, the lighting fixture is mounted in the housing only through the brackets. It should therefore be understood that no other element apart from the brackets is involved in the assembly made between the lighting device and the housing.

Such an assembly has a simple structure, having a reduced number of parts, which is therefore easy to assemble and presents a low cost of manufacture and assembly, while being reliable and robust.

In certain embodiments, the brackets are attached to the carcass by bolting or an equivalent (ie by bolting or equivalent means).

By "bolted or equivalent" is understood any way of fixing that allows the brackets to be assembled to the casing through the casing wall, for example, with the help of a bolt, a screw, a rivet, etc.

Therefore, each bracket is fixed to the housing through at least one hole formed in the wall of the housing. According to a first variant, each bracket is bolted to the casing through a single hole. According to another variant, each bracket is fixed to the casing through two holes, one hole serving for bolting or equivalent of said bracket, the other hole serving to block the bracket in rotation through a locking cleat. According to yet another variant, each bracket is fixed to the casing through two holes, each of the two holes serving for bolting or equivalent of said bracket.

In some embodiments, each bracket is attached to the casing through two holes, these holes being less than 5.0 cm (five centimeters) apart in the longitudinal direction. Such spacing between the holes does not vary or changes very little during the thermal expansion of the housing when the luminaire is illuminated or when it is placed in a particularly hot environment (and therefore does not generate any additional mechanical stress), as long as that the fixing of the brackets to the casing through two holes is satisfactory.

Thanks to the fixing of the brackets to the housing by bolting or equivalent, the assembly structure of the luminaire is simple, has a reduced number of parts, is easy to assemble and presents a low cost of manufacture and assembly, at the same time as it is reliable and robust.

In certain embodiments, the housing is made of glass or a polymeric material. For example, polymeric material It is polycarbonate (also known by the acronym "PC") or polymethylmethacrylate (also known by the acronym "PMMA"). More generally, the polymeric material is, for example, a synthetic organic polymeric material or a synthetic organic polymer.

Glass and polymeric material are resistant both from a mechanical and thermal point of view and, of course, in their transparent form have very good light transmission properties. On the other hand, such materials can be perforated for the assembly of the brackets by bolting or equivalent without suffering damage. The polymeric material also has the advantage of being particularly light, which facilitates its handling and allows the use of less robust and therefore less expensive fasteners.

In some embodiments, the housing has a circular cross section (in the longitudinal direction), each bracket comprises a flange for locking the lighting device in rotation around the axis of the housing.

In that case, the carcass having a circular cross section, has a symmetry of revolution and has an axis of revolution parallel to the longitudinal direction, this axis is called the axis of the carcass.

Such a cylindrical casing with a circular section, thanks to its symmetry of revolution, is particularly easy to implement and does not impose any sense of assembly. On the other hand, by equipping each bracket with a rotating locking flange, it is ensured that the position of the lighting device inside the housing is maintained around the axis of the housing, and this, in any circumstance. Of course it should be understood that, as far as each bracket is concerned, the lock operated by the flange is a relative lock between the bracket and the lighting fixture. In other words, the flange blocks the lighting fixture with respect to the bracket. It should also be understood that each flange forms one and the same piece with a square. Thus, the flanges are elements other than the bolting or equivalent means for assembling the bracket to the housing.

In this way, thanks to the shape of the housing and the flanges of the brackets, the structure of the luminaire is simple, it has a reduced number of parts, it is easy to assemble and it presents a low cost of manufacture and assembly, at the same time. which is reliable and robust.

In some embodiments the lighting device comprises a longitudinally extending support comprising a pair of longitudinally extending grooves (or first grooves), the flange of each bracket being engaged in a groove (or first groove).

It should be understood that the bracket is in the shape of a profile and serves for mounting the lighting fixture on the brackets. Such a support can, for example, have other functions in addition to mounting the lighting device on the brackets, such as, for example, forming a hiding place to hide the parts, such as the power supply and the cables of the lighting device, and / or forming a reflector to reflect light in a predetermined direction. According to a variant, the support is made of a material of the same type as the casing, thanks to which differences in thermal expansion are avoided. In this way, such a support allows to integrate several functions in a single piece, thanks to which the structure of the luminaire is simple, has a reduced number of pieces, which, therefore, is easy to assemble and presents a reduced cost of manufacturing and assembly, while being reliable and robust.

In certain embodiments, each bracket comprises at least one stop to block the lighting device in translation according to the longitudinal direction.

It should be understood that each bracket comprises one or more stops, the lighting device cooperating by bumping in the longitudinal direction with only one, several or even all of the brackets. Of course it should be understood that, for each bracket, the lock operated by the stop (s) is a relative lock between the bracket and the lighting fixture. In other words, the stop (s) block the lighting device with respect to the bracket. It should also be understood that each stop forms one and the same piece with a square. Thus, the stops are elements other than the bolting or equivalent means for assembling the bracket to the casing. The stops are also elements other than the locking tabs in rotation of the lighting device about the axis of the housing.

Thanks to these stops, the lighting device is held in position in the longitudinal direction within the housing. These stops are formed in the squares, the structure of the luminaire is simple, it has a reduced number of parts, it is easy to assemble and it presents a low cost of manufacture and assembly, as well as being reliable and robust.

In certain embodiments, the lighting device comprises a plate, the plate comprising at least one tab that cooperates by abutting the at least one stop of a bracket.

It should be understood that the platen is the part of the lighting fixture that supports the power supply, cables, and light bulbs or equivalents of the fixture. By "light bulb or equivalent", any lighting element, such as a light bulb, a fluorescent tube, a neon tube, one or more diodes, should be understood. electroluminescent (or LED), etc.

The tongue of the plate cooperates with one or more stops of a square. For example, if the bracket only comprises a stop, the tongue may have a cutout that receives said stop to cooperate with the stop in the two opposite directions in the longitudinal direction. According to another example, if the bracket comprises two stops, the tongue is arranged between the two stops to cooperate abutting in a direction according to the longitudinal direction with each of the stops. Thanks to the tongue of the plate and the stop of the bracket, the structure of the luminaire is simple, it has a reduced number of parts, it is easy to assemble and it presents a low manufacturing and assembly cost, as well as being reliable and robust.

In certain embodiments, the support comprises a pair of second grooves, these second grooves being facing each other, the plate being mounted on the support inserting into the second grooves. Such a structure is simple, has a small number of parts, is easy to assemble, and is inexpensive to manufacture and assemble, while being reliable and robust.

In certain embodiments, the tubular luminaire comprises four brackets, two brackets mounted on each end portion of the casing facing each other.

Such a symmetrical arrangement of the brackets allows the lighting fixture to be mounted within the housing regardless of the direction and relative orientation between the lighting fixture and the housing. Such a structure is simple, has a small number of parts, is easy to assemble, and is inexpensive to manufacture and assemble, while being reliable and robust.

In certain embodiments, the longitudinal luminaire comprises a sealing gasket embedded in each end portion of the casing, each gasket having a groove that receives one end of the casing and at least one cutout that receives a square.

By "end portion" is meant a portion of the carcass that extends from a longitudinal end of the carcass to a maximum of 20% of the length of the carcass in the longitudinal direction. It should be understood that each end portion of the casing in the longitudinal direction is engaged in a groove of a joint. In this way, the gasket covers the inside, outside and the face perpendicular to the longitudinal direction of the end portion of the housing. The gasket has, in its internal part, arranged inside the casing, as many cutouts as there are squares arranged in the end portion in question, thanks to which the squares do not interact with the gasket and do not alter the correct operation of the gasket. Council. In the event that the brackets are fixed to the casing by bolting or equivalent, the portion of the gasket that covers the exterior of the casing has concavities that receive the heads of the bolts or equivalent, thanks to which the gasket covers said heads without that the excess thickness represented by the heads alters the correct functioning of the seal, thus ensuring the tightness of the luminaire at the holes in the housing to fix the brackets.

Such a single gasket, at each end of the casing, makes it possible to ensure both a tightness at the level of the end face of the casing and of the longitudinal faces of the casing. For example, one or more clamps may cooperate with the gasket, thus contributing to the tightness provided by the gasket. For example, said clamp can also serve as a fixing element to fix the luminaire, for example, to a wall bracket or directly to a wall. Thanks to such a unique gasket at each free end of the housing, the structure of the luminaire is simple, has a reduced number of parts, is easy to assemble and presents a low cost of manufacture and assembly, while being reliable and robust. .

According to the invention, the luminaire comprises a cover mounted on one end of the housing, the cover being fixed at least to one bracket.

It should be understood that the lid closes an open longitudinal end of the housing. It should be understood that the housing has at least one open longitudinal end for mounting the lighting device therein. At least one bracket has a fixing lug to fix the cover mounted on the housing. Fixing is done, for example, by screwing into the temple. In this way, the brackets perform several functions, namely the assembly of the lighting device with the housing and the fixing of the cover to the housing. Such a cover can also cooperate with the eventual gasket, thus contributing to the tightness provided by said gasket. Thanks to such brackets, the structure of the luminaire is simple, has a reduced number of parts, is easy to assemble and presents a low cost of manufacture and assembly, while being reliable and robust.

In certain embodiments, all the brackets are identical, which further simplifies the structure and assembly of the luminaire.

According to the invention, the lighting device comprises at least one switch that cooperates with the cover when the cover is mounted on the housing.

It should be understood that when the cover is mounted to the housing, the switch is configured to supply the electrical current lighting device from the mains, whereas when the cover is not assembled to the housing, the switch is configured to isolate the lighting device from the mains. Such a switch allows the operator to intervene in the luminaire, for example, to replace a light bulb or equivalent, in complete safety and without the need to cut off the current from the electrical network. In certain embodiments, the at least one switch is concealed by a cover and can simultaneously cooperate with the cover when the cover is mounted on the housing. This reinforces the protection of the operator in case of intervention and prevents him from activating the switch inadvertently. In some embodiments, the power supply and cables are also hidden. This also strengthens the protection of the operator. The direct cooperation between the cover and the switch contributes to the simplicity of the structure of the luminaire, which thus has a reduced number of parts, is easy to assemble and presents a low cost of manufacture and assembly, while being reliable and robust.

Description of the figures

The invention and its advantages will be better understood after reading the detailed description that follows of the different embodiments of the invention that are provided by way of non-limiting examples. This description refers to the pages with the attached figures, in which:

- figure 1 represents an assembled longitudinal luminaire,

- figure 2 represents the luminaire of figure 1 exploded, perspective view,

- figure 3 represents the luminaire of figure 1 exploded, seen in perspective, following a different direction from that of figure 2, and

- Figure 4 shows the support that belongs to the lighting device of the luminaire of Figure 1.

Detailed description of the invention

Figures 1 to 4 represent an embodiment of the longitudinal luminaire according to the invention. In Figure 1, the longitudinal luminaire 10 is assembled. The luminaire 10 extends along the longitudinal direction X.

The luminaire 10 is described in more detail with reference to Figures 2 to 4.

The luminaire 10 comprises a housing 12 in which a lighting device 14 is housed. The housing 12 is transparent and has the shape of a cylindrical profile of circular section with an axis parallel to the longitudinal direction X, and open at both ends. longitudinal 12aa. Several brackets 16, in this example four brackets 16, allow the lighting device 14 to be assembled to the casing 12, inside the casing 12.

In this example, all 16 squares are identical. Hereinafter, only one bracket 16 is described in detail, but of course this description applies to all brackets 16. Bracket 16 comprises a fixing portion 16a, in the form of a plate extending in the longitudinal direction. X, and which has two threaded holes for fixing the bracket 16 in the housing 12, with the help of screws 18. Two lugs 16b and 16c extend perpendicular to the fixing portion 16a, to one side and the other of the portion of fixing 16a along the longitudinal direction X. The lugs 16b and 16c are substantially plate-shaped extending perpendicular to the longitudinal direction X. The first lug 16b has a threaded hole for fixing a cap which is described later. The second lug 16c supports a flange 16d which extends parallel to the fixing portion 16a, opposite the fixing portion 16a with respect to the lug 16c. Two stops 16e extend in the extension of each lug 16b and 16c. In each leg 16b and 16c, the two stops 16e are separated and delimit a window 16f.

The brackets 16 are fixed to the casing 12 with the aid of screws 18, the casing 12 having holes 13 for this purpose. In this example, each bracket 16 is fixed with the help of two screws 18 positioned in the longitudinal direction X relative to each other. More particularly, two brackets 16 are fixed at each end portion 12a of the casing 12, inside the casing 12 and facing each other. In other words, the squares 16 are arranged two by two diametrically opposed. Additionally, the brackets 16 are aligned two by two according to the longitudinal direction X. In addition, the brackets 16 are arranged so that the flanges 16d extend into the housing 12 according to the longitudinal direction X while the lugs 16b are arranged towards the outside of the housing 12 in the longitudinal direction X.

The lighting device 14 comprises a support 22 and a plate 24. The support 22 is in the form of a profile extending along the longitudinal direction X, and has a substantially semicircular cross section, and thus forms a semicircular portion 22a. Grooves are formed at the ends of the semicircular section, thus forming grooves that extend according to the longitudinal direction X. Therefore, two first grooves 22b are facing outward from the semicircular portion 22a, while two second grooves 22c they are oriented towards the interior of the semicircular portion 22a. Each end of the semicircular section has a single first groove 22b and a single second groove 22c. In this example, the grooves 22b and 22c are oriented radially with respect to the semicircular shape 22a.

The plate 24 has a substantially longitudinally extending plate shape and exhibits longitudinal edges 24a. Fluorescent tubes 25 and their mounting terminals are arranged on a first side of the plate 24, while the power supply and power cables (not shown) of the fluorescent tubes 25 are arranged on a second side, opposite to the first. side, of the plate 24. The plate 24 is mounted on the bracket 22 by inserting the longitudinal edges 24a into the second grooves 22c. The second grooves 22c thus form a slide that receives the plate 24.

The plate 24 is mounted on the bracket 22 so that the fluorescent tubes 25 are visible while the power supply and cables, not shown, are on the side of the bracket 22 and therefore hidden. In this way, the support 22 forms a hiding place that allows to hide the power supply and the cables, thus fulfilling an aesthetic function. On the other hand, the inner surface 22aa of the semicircular portion 22a is reflective. In this way, the support 22 also forms a reflector that allows optimizing the luminous flux emitted by the luminaire 10, reflecting the light emitted by the fluorescent tubes 25.

To mount the lighting device 14 within the housing 12, the bracket 22 is arranged within the housing 12 by engaging the flange 16d of each bracket 16 in a first groove 22b. It should be noted that the windows 16f of the brackets 16 have the same width as the second grooves 22c. In this way, even when the bracket 22 is mounted within the housing 12, it is possible to mount or dismount the plate 24.

The lighting device 14 and, more particularly in this example, the support 22, is thus supported and locked in rotation about the axis of the housing 12 by the flanges 16d. On the other hand, the lighting device 14 and, more particularly in this example, the support 22, cooperate by abutting in the longitudinal direction X with the pair of stops 16e supported by the lug 16c of each of the brackets 16. In this way, the support 22 (and, therefore, the lighting device 14) is locked in translation in a first direction along the longitudinal direction X by the stops 16e of a first pair of brackets 16 arranged in a first portion of longitudinal end 12a of the casing 12, while it is blocked in translation in a second direction according to the longitudinal direction X, opposite to the first direction, by the stops 16e of the second pair of brackets 16 arranged in the second longitudinal end portion 12a of the casing 12, arranged opposite along the longitudinal direction X of the first end portion 12a. In this example, the bracket 22 and the shell 12 are made from a material of the same type, namely polycarbonate, so that the thermal expansion of the shell 12 is similar to the thermal expansion of the bracket 22. Therefore , there is little or no difference in thermal expansion between the support 22 and the casing 12, so that the blocking in translation according to the longitudinal direction X described above does not induce any stress related to the thermal expansions of these elements. Of course, although they are made from a material of the same type, the housing 12 is transparent while the support 22 is opaque. In this example, the outside diameter of the bracket 22 is substantially equal to the inside diameter of the casing 12 (while, of course, allowing the bracket 22 to be embedded inside the casing 12), so that the bracket 22 cooperates with the casing 12 for complementarity of form.

The plate 24 is also locked in translation according to the longitudinal direction X with the aid of stops 16e. A tab 26 is arranged between the stops 16e extending from the tabs 16b and 16c of a single and same bracket 16. Thus, the stops 16e supported by a pin between the tabs 16b and 16c lock the tab 26 and thus therefore, the plate 24, in translation in a first direction according to the longitudinal direction X, while the stops 16e supported by the other leg of the legs 16b and 16c block the tongue 26 and, therefore, the plate 24, in translation in a second direction according to the longitudinal direction X, opposite to the first direction. In this example, the tongue 16 is an "L" shaped plate bolted to the plate 24. Of course, any other form of tongue is possible. In this example, the plate 24 is metallic. On the other hand, the plate 24 is also reflective, to optimize the luminous flux emitted by the luminaire 10, reflecting the light emitted by the fluorescent tubes 25.

Thus, by operating the translational locking of the plate 24 by a single bracket 16, the plate is not restricted and is free to thermally expand. In this way, thanks to this locking with the help of a single bracket 16, the difference in thermal expansion between the plate 24 and the casing 12 in which the brackets 16 are fixed does not generate any mechanical stress in the assembly of these two elements. . Also, thanks to the mounting in the form of a slide of the plate 24 with the support 22, the difference in thermal expansion between the plate 24 and the support 22 does not generate any mechanical stress in the assembly of these two elements.

Each end portion 12a of the housing 12 is provided with a gasket 28. Since the two gaskets 28 are identical, only one of the two gaskets is described, this description obviously applies to the other gasket 28. The gasket 28 It is annular and comprises a groove 28a that receives the longitudinal end 12aa of the casing 12. The gasket 28 comprises an outer skirt 28b configured to be arranged on the outside of the casing 12, and an internal skirt 28c configured to be arranged inside the casing 12. These two skirts 28b and 28c are connected by a flange portion 28d, these three parts thus delimit the groove 28a. The inner skirt 28c has two cutouts 28ca, each of these cutouts receiving a square 16. The outer skirt 28b has two concavities 28ba formed on its inner face, these concavities 28b receiving the head of the screws 18. It should be noted that the length according to the longitudinal direction of the outer skirt 28b is greater than the length according to the longitudinal direction of the inner skirt 28c. Beyond the concavities 28ba of the outer skirt 28b in the longitudinal direction from the flange portion 28d, there is an annular groove 28bb formed in the outer face of said outer skirt 28b. This groove 28bb is configured to receive a clamp 30, to encircle the joint 28 radially to the casing 12 in order to ensure tightness and this without the heads of the screws 18 altering the correct operation of the gasket. On the other hand, the groove 28bb has indicators 28bc housed in the cutouts 30a of the clamp 30, to position the clamp 30 in a predetermined position with respect to the gasket 28 and the casing 12. In this example, these cutouts 30a and the Indicator 28bc correspond substantially to the position of the squares 16 and the cutouts 28ca. It should be noted that the fixing of the luminaire 10, for example, to a wall support not shown, is operated through the clamps 30. In this way, the clamps 30 support the housing 12 through the joints 28, the latter forming also a vibration damper, thus preserving the luminaire 10 from vibrations that could be transmitted to the luminaire 10 through the wall bracket. This improves the useful life of the components of the luminaire 10.

The housing receptacle 12 is closed, at each of the two open longitudinal ends 12aa, respectively, by a cover 20a and a cover 20b. The difference between the cover 20a and the cover 20b is that the cover 20a has holes equipped with glands 20aa for the passage of electrical supply cables, and that it is provided with an internal projection 20ab extending longitudinally. Thus, except for these differences, the covers 20a and 20b are identical. Of course, the glands 20aa can be replaced by one or more connectors. On the other hand, the two covers can be equipped with one or more cable glands and / or connectors. According to yet another variant, the luminaire can be equipped with two identical covers.

The covers 20a and 20b each have a skirt 20ac and 20bc that extends longitudinally and partially covers the outer face of the outer skirt 28b of the joint 28. As can be seen in Figure 1, the skirt 20ac, 20bc of each one of the covers 20a, 20b extends to the slot 28bb (or the clamp 30) without covering, however, this slot 28bb. This makes it possible, in particular, to protect the corresponding portion of the gasket from any external aggression.

The covers 20a and 20b are fixed by screws 32 on the brackets 16. More particularly, in this example, each screw 32 is screwed into the threaded hole of the pin 16b of one of the brackets 16. In this way, each cover 20a, 20b is fixed with the help of two screws 32, to two brackets 16. Of course, the tightening of these screws makes it possible to ensure the tightness between the gasket and the cover. Of course, the covers can be fixed with a single screw or with more than two screws.

When the cover 20a is mounted on the housing 12, the projection 20ab cooperates with the switch 34 of the lighting device 14. When the cover 20a is mounted on the housing 12, the switch 34 is configured to supply the lighting device 14 with electric current. from the mains, while when the cover 20a is not mounted on the housing 12, the switch 34 is configured to isolate the lighting device 14 from the mains and thus forms a protection in case an operator intervenes in the luminaire 10. It should be noted that the switch 34 is protected by a cover 24b that has an oblong hole configured to allow the projection 20ab to pass. In this way, the operator who removes the cover 20a cannot, except deliberately, act on the switch, other than by lifting the cover 20a. It should be noted that the tongue 26 allows, in addition to locking in translation according to the longitudinal direction X of the plate 24, to arrange the plate 24 in a predetermined position within the casing 12, thanks to which it is ensured that the plate 24 (or, more generally, the lighting device 14) and therefore the switch 34, are in a suitable position with respect to the cover 20a so that it can be activated satisfactorily during the assembly / disassembly of the cover 20a.

Although the present invention has been described with reference to specific embodiments, it is clear that changes and modifications can be made to these examples without departing from the general scope of the invention as defined in the claims. In particular, the individual characteristics of the different illustrated / mentioned embodiments can be combined in additional embodiments. Accordingly, the description and drawings should be considered in an illustrative rather than a restrictive sense.

Claims (11)

1. Longitudinal luminaire (10) comprising a cylindrical casing (12) extending according to a longitudinal direction (X), said casing (12) being at least partially transparent, and a lighting device (14) arranged inside the the housing (12), the lighting device (14) and the housing (12) being assembled only with the aid of a plurality of brackets (16), a cover (20a, 20b) mounted on one end of the housing (12aa ), the cover (20a, 20b) being fixed to at least one bracket (16), and at least one switch (34) that cooperates with the cover (20a) when the cover (20a) is mounted on the housing (12) , wherein when the cover (20a) is mounted on the housing (12) the switch (34) is configured to supply the lighting device (14) with electric current, while when the cover (20a) is removed from the housing ( 12) the switch is configured to isolate the lighting fixture (14). 2. Longitudinal luminaire (10) according to claim 1, wherein the brackets (16) are fixed to the housing (12) by bolting or the like. Longitudinal luminaire (10) according to claim 1 or 2, wherein the housing (12) has a circular cross-section, each bracket (16) comprising a flange (16d) for locking the lighting device (14) in rotation around of the axis of the casing (12) with respect to said square. Longitudinal luminaire (10) according to claim 3, wherein the lighting device (14) comprises a longitudinally extending support (22) and comprising a pair of longitudinally extending first grooves (22b), the flange being (16d) of each bracket (16) coupled in a first groove (22b). Longitudinal luminaire (10) according to any one of claims 1 to 4, wherein each bracket (16) comprises at least one stop (16e) to block the lighting device (14) in translation according to the longitudinal direction (X) with respect to said squad. Longitudinal luminaire (10) according to claim 5, wherein the lighting device (14) comprises a plate (24), the plate (24) comprising at least one tab (26) that cooperates abutting the at least one stop (16e) of a square (16). Longitudinal luminaire (10) according to claims 4 and 6, wherein the support (22) comprises a pair of second grooves (22c), these second grooves (22c) being arranged facing each other, the plate (24) being mounted on the support (22) inserting into the second grooves (22c). Longitudinal luminaire (10) according to any one of claims 1 to 7, comprising four brackets (16), two brackets (16) being mounted on each end portion (12a) of the housing (12) in a facing arrangement . Longitudinal luminaire (10) according to any one of claims 1 to 8, comprising a sealing gasket (28) embedded in each end portion (12a) of the housing, each gasket (28) having a groove (28a) that receives one end (12aa) of the casing (12) and at least one cutout (28ca) that receives a square (16). Longitudinal luminaire (10) according to any one of claims 1 to 9, wherein the at least one switch (34) is hidden by a cover (24b) while cooperating with the cover (20a) when the cover ( 20a) is mounted on the housing (12). Longitudinal luminaire (10) according to claim 10, wherein the cover (24b) comprises a hole configured to allow a projection (20ab) of the cover (20a) to pass, said projection (20ab) being configured to cooperate with the switch (34) when the cover (20a) is mounted on the housing (12).