Light tray for forming a light housing

Abstract

Luminaire housing (50), which is designed to be connected to a translucent cover (20) to form a closed luminaire housing, wherein the luminaire housing (50) has ribs (70, 80) projecting into its interior, which are designed for the detachable mounting of a support element (100) for light source units, characterized in that at least a part of the ribs (70, 80) has locking recesses (76) for locking a cable holder (90).

Description

[0001] The present invention relates to a luminaire housing designed to form a closed luminaire enclosure together with a translucent cover. The invention further relates to a luminaire enclosure for a luminaire, wherein the luminaire is in particular a so-called moisture-proof luminaire.

[0002] Moisture-resistant luminaires are defined as luminaires used in environments where, among other things, elevated humidity may be present. These can include, for example, factory halls or garages, as well as areas that are not completely sealed off from the outside. Since the ingress of dirt, dust, and especially moisture into the interior of a luminaire must be prevented to avoid damage to the electronic components responsible for light generation, the luminaires must be appropriately sealed from the environment. In this context, so-called protection classes are defined, which, depending on their class, specify certain requirements for the sealing of the luminaire housing.

[0003] EP 1 004 816 A1 describes a luminaire with an internal support plate, which can be positioned at one of two different heights within the luminaire. The luminaire consists of a base unit and a locking plate that supports the base within the base unit. Adjustment mechanisms allow the support plate to be retained in its position.

[0004] EP 2 918 904 A1 relates to a lighting device and an assembly method for this lighting device. The device has at least one light source, a circuit carrier, and a ballast. The housing is multi-part and has at least one support element for attaching and / or positioning the housing parts. The support element is integrally formed on one housing part and projects into the other. The receiving area for the support element is cast with a hardening material so that the two housing parts are joined by a material-locking and / or form-locking connection after hardening.

[0005] A closed luminaire housing typically consists of at least two components: a cover responsible for light emission and a luminaire diffuser, also known as a light well, which is connected to the cover. The diffuser is usually pot- or trough-shaped to create a housing in which the other components of the luminaire, particularly those responsible for light generation, can be arranged and sealed from the environment. While, for manufacturing reasons, diffusers are often made from stamped and bent sheet metal parts, this is not a viable option for damp-proof luminaires, as such sheet metal housings are very difficult to seal from the environment.Luminaire housings for damp-proof luminaires are therefore preferably made of plastic and are manufactured in particular using injection molding, since this method allows for a one-piece and thus closed luminaire housing to be produced.

[0006] At the same time, however, the corresponding light fixture must also be designed in such a way that it allows for the arrangement and fixing of the other components within the housing. Such measures, however, often necessitate additional processing of the injection-molded housing to create the required mounting points.

[0007] The present invention is therefore based on the objective of providing a novel way to realize a light fixture which can be manufactured simply and which nevertheless offers the possibility of easily attaching the additional components of the light fixture inside.

[0008] The problem is solved by a light fixture having the features of claim 1. Advantageous embodiments of the invention are the subject of the dependent claims.

[0009] The lamp housing according to the invention is characterized by the fact that ribs projecting into the interior of the lamp housing are provided for the detachable mounting, in particular of a support element for light source units. These ribs extend integrally from the corresponding side walls of the lamp housing, thus enabling its simple manufacture. At the same time, these ribs allow for the easy insertion and, if necessary, removal of a support element for the light source units.

[0010] According to the invention, a light fixture is proposed which is designed to be connected to a translucent cover to form a closed light housing, wherein the light fixture has ribs projecting into its interior, which are designed to detachably hold a support element for light source units. Preferably, the ribs are arranged on two opposing side walls of the light fixture.

[0011] According to a preferred embodiment of the present invention, at least two different types of ribs may be provided, each having a locking recess for engaging with the support element. The locking recesses of the different rib types are designed differently, such that together they fix the support element in a predetermined position. In particular, the ribs of a first type may fix the support element in at least a first direction, and the ribs of the second type fix the support element in a second direction that is substantially perpendicular to the first. The appropriate selection of ribs facilitates the insertion of the support element into the luminaire housing, ensuring that it is nevertheless fixed in the desired position.

[0012] According to the invention, at least some of the ribs have locking recesses for locking a cable holder. Such elements are advantageous, for example, when cables – e.g., for through-wiring – are to be stored along the luminaire housing. Here, too, the ribs of the luminaire housing according to the invention are specifically designed so that a defined storage of the cables can be achieved simply by snapping in appropriate cable holders, without the need for complex additional fastening measures to attach them to the luminaire housing.

[0013] According to a further advantageous embodiment, at least some of the ribs may have additional through-holes. These can also be used to route further elongated components along the luminaire housing or to attach additional components to the ribs.

[0014] Due to regulations, luminaire housings often display symbols such as warning symbols on their exterior. These are typically applied to the housing after it has been manufactured, for example, by embossing, printing, or applying adhesive. In all cases, however, additional steps are required to apply the symbol to the outer surface of the luminaire housing.

[0015] According to a particularly preferred embodiment, the warning symbol on the outer surface of the light fixture is designed such that it is formed by several stepped surface sections. Such a symbol, which could, for example, represent a lightning bolt warning of voltage, can then be efficiently produced during the manufacturing process of the light fixture by injection molding. This specific, inventive design of the warning symbol ensures that, despite everything, the light fixture can still be easily demolded from the injection mold after molding. This reduces the overall effort required to produce a light fixture.

[0016] In order to form the desired sealed luminaire housing together with a cover, the luminaire housing according to the invention preferably has a circumferential sealing channel, with a seal arranged in the base region of the sealing channel. In particular, it can be provided that an outer wall of the sealing channel has locking recesses facing the channel, which then interact in a corresponding manner with locking projections of the cover. Furthermore, an inner wall of the channel can have recesses opposite the locking recesses. This measure, in turn, facilitates the subsequent demolding of the housing from the mold after its production by injection molding.

[0017] To supply power to the components located inside the luminaire, external power supply cables must be routed into the luminaire housing. Luminaire housings therefore often have one or more sections that are broken out of the housing to form feed-through openings. Such sections are also provided in the luminaire housing according to the invention, wherein, according to a particularly preferred embodiment, at least one of these sections is formed centrally in a base surface of the luminaire housing. Typically, such sections are provided at the end faces or in the end regions of the base surface. In the luminaire housing according to the present invention, corresponding sections for forming feed-through openings can also be provided at these locations; however, in addition, a section is now also formed centrally or...A central area is provided for this purpose, allowing for greater flexibility in supplying power to the luminaire and thus in its positioning. The luminaire housing can be made of materials such as PC or PMMA. If PMMA is used, the housing would be translucent, which could potentially be used to create additional lighting effects through secondary light emission.

[0018] According to the invention, a luminaire housing, particularly for a moisture-proof luminaire, is also proposed, wherein the housing is formed by a luminaire diffuser of the type just described and a cover to be connected to the diffuser. It can be provided, in particular, that the cover and the diffuser are each made of the same material. Such a preferably homogeneous realization of both housing parts from the same material offers the advantage that there is no risk of differential expansion of the two housing components in the event of temperature fluctuations. This effect could potentially lead to displacements that could negatively impair the functionality of the seal and the locking mechanism. However, such problems are avoided in the preferred embodiment because both housing components are made of the same material and therefore expand and contract in the same way.

[0019] In a luminaire according to the invention, which has a luminaire housing of the type just described, it is further preferably provided that light-generating means are arranged in the luminaire housing. These means can, in particular, be arranged on a gear tray that is detachably snapped to the luminaire housing. The gear tray can have light-transmitting openings that allow light to pass from a region of the housing in which the light-generating means are arranged to a region opposite the light-generating means with respect to the gear tray. This can then be used, if the luminaire housing is at least partially transparent, to primarily emit the light generated by the light sources via the cover, but also to allow some of the light to enter the opposite region of the housing and then be emitted via the housing housing.

[0020] The invention will now be explained in more detail with reference to the accompanying drawings. These show: Fig. 1 and Fig. 2 views of a so-called damp-proof luminaire in which a device carrier according to the invention is used; Fig. 3 a front view of the damp-proof luminaire; Fig. 4 a sectional view of the damp-proof luminaire; Fig. 5 and Fig. 6 views of a cover responsible for light emission of the damp-proof luminaire; Fig. 7 an enlarged view of the front area of ​​the cover; Fig. 8 and Fig. 9 views of the locking areas responsible for attaching the cover to the light housing; Fig. 10 and Fig. 11 views of the light fixture housing of the damp-proof luminaire; Fig. 12 an enlarged view of the end area of ​​the light fixture; Fig. 13 the area of ​​the light fixture responsible for locking it to the cover; Fig. 14 a sectional view of the cover snapped into the light fixture; Fig. 15 the attachment of an additional cable holder to the light fixture; Fig. 16 the cable holder in isolated view; Fig. 17 an end area of ​​the light fixture; Fig. 18 the view of a special tool element for generating a warning symbol on the outside of the light housing; Fig. 19 a sectional view of the equipment carrier locked to the light tray; Fig. 20 and Fig. 21 views of the device carrier; Fig. 22, Fig. 23, Fig. 24 to Fig. 25 views of the equipment carrier with the components for light generation attached to it; Fig. 26, Fig. 27 to Fig. 28 views of a primary optic to be attached to the device carrier and Fig. 29 the assembly consisting of the device carrier and the primary optics attached to the device carrier.

[0021] In the Fig. 1 and Fig. Figure 2 shows two perspective views of a moisture-proof luminaire, generally designated with the reference numeral 1, which is intended for use in areas where, among other things, high humidity may be present. Luminaire 1 is designed to prevent the ingress of dust and / or moisture into its interior. The sealing measures described in more detail below are intended to ensure that luminaire 1 meets the requirements of protection class IP65, ideally class IP66.

[0022] The essential components of the luminaire 1 are a so-called luminaire housing 50, a cover 20, and a component described in more detail below. Fig. 1 and Fig. 2. An invisible mounting bracket, arranged in the space enclosed by the luminaire housing 50 and the cover 20, carries the components responsible for light generation. The luminaire housing is thus formed by the components to be joined together: the luminaire housing 50 and the cover 20. These enclose an elongated receiving space for the other components of the luminaire 1.

[0023] It is planned that the cover 20 and the luminaire housing 50 will be made of the same material. This represents a significant difference compared to previously known solutions, as the differing requirements previously necessitated making the luminaire housing from one material and the cover responsible for light emission from a different material. Materials used for the luminaire housing were typically chosen to seal the interior of the luminaire against external influences. The cover, in turn, was made of a material that met the optical requirements regarding light emission.

[0024] In the present case, however, it is now provided that the luminaire housing 50 and the cover 20 are made entirely of the same material, whereby, for example, according to a first preferred embodiment, polycarbonate (PC) may be used for both components. This plastic material can be either opaque or opal, with an opaque material preferably being selected for the housing 50, while the cover 20 is opal. That is to say, the cover 20 in this case has at least slightly light-diffusing properties, which leads to a homogeneous, uniform light emission.

[0025] According to another advantageous embodiment, both the luminaire housing 50 and the cover 20 can be made of polymethyl methacrylate (PMMA). This material can be made crystal clear. This choice of material allows light to escape not only through the cover 20, but also through the luminaire housing 50, which is also translucent. This can be used to illuminate the housing of the luminaire 1 as a whole or to achieve indirect light emission via the luminaire housing 50.

[0026] In both versions, as already mentioned, the luminaire housing 50 and the cover 20 are made of the same materials. This offers the advantage that both housing components 20 and 50 expand and contract in the same way in response to temperature fluctuations. This prevents temperature fluctuations from negatively affecting the sealing measures described in more detail below. This further improves the sealing of the luminaire 1 against external influences.

[0027] Another special feature of the luminaire 1 is that, apart from the sealing material described below, the sealing of the luminaire's interior against external influences is achieved solely by the two housing components (dwell 50 and cover 20), and both housing components 20 and 50 are designed in such a way that they can be joined together without additional aids. Ideally, the cover 20 and the luminaire housing 50 consist entirely of a single material (such as polycarbonate or polymethyl methacrylate) without the use of additional, more flexible materials in the connection area, as is the case with many known solutions. This simplifies the manufacturing of both housing parts 20 and 50, as they can be easily produced using injection molding, as described below.On the other hand, the omission of additional connection and sealing measures requires a special interaction of both housing components 20, 50 in the connection area in order to achieve the desired connection and seal.

[0028] In this context, the design of the cover 20, including the measures provided for its connection to the luminaire housing 50, will first be described in detail below. This will be done in particular with reference to the Fig. 5, Fig. 6, Fig. 7, Fig. 8 to Fig. 9 will take place.

[0029] The Fig. 5 and Fig. Figure 6 shows the complete light cover 20 in perspective view, firstly from the inside ( Fig. 5) and, on the other hand, from the outside ( Fig. 6) The cover 20 has an elongated, dome-shaped form and smooth outer surfaces. This significantly facilitates cleaning of the surfaces of the luminaire 1 that are primarily responsible for light emission. It also reduces the risk of dirt particles accumulating on the surface of the luminaire 1.

[0030] On the inside of the dome shape, the cover 20 is provided with light-refracting structures across essentially its entire surface; in the illustrated embodiment, these are longitudinally extending ribs 24. These ribs can, for example, have a prism-like shape with a triangular cross-section to influence the light emitted through the cover 20 in the desired transverse direction. Other prism structures (e.g., matrix-like) could also be used. It should be noted, however, that these light-refracting structures 24 are only optically effective if the material of the cover 20 has no or at least only slight light-scattering properties. This means that these structures 24 primarily come into play in the variant where the cover 20 is made of PMMA.

[0031] The shape of the cover 20 is chosen such that it is approximately trapezoidal in both a section perpendicular to the longitudinal direction and perpendicular to it. However, the base surface 21 curves into the areas of the side walls 22 and the end faces 23. This shape results in increased mechanical stability of the cover 20, avoids sharp edges on the outside of the cover 20 that could negatively impair light emission, and in turn facilitates cleaning of the surfaces responsible for light emission. The base surface 21 can be shaped as shown in the illustrations of the Fig. 3 and Fig. 4 can be removed and may be slightly concave, which allows the light emission to be additionally influenced in the desired way.

[0032] The components responsible for locking the cover 20 to the luminaire housing 50 and for sealing the luminaire housing can in particular be used by the Fig. 7, Fig. 8 to Fig. 9 can be taken from.

[0033] It is immediately apparent that the outwardly sloping side walls 22 and end faces 23 of the cover 20 transition into a circumferential web 26, which is oriented approximately perpendicular to the plane of the base surface 21 and is intended to engage in a sealing channel of the luminaire housing 50, which will be described in more detail below. This web 26, extending uninterrupted around the entire circumference, is then intended, in conjunction with a sealing material contained in the sealing channel, to provide the actual sealing of the luminaire's interior.

[0034] In addition, the cover 20 also has a splash guard edge 25 projecting outwards at a right angle from the upper edge of the sealing rib 26, which is particularly important in Fig. 7 is recognizable. When the luminaire housing is assembled, this covers the sealing channel of the luminaire housing 50, thus preventing any direct impact of splashing water or the like on the sealing area. The risk of back pressure acting on the seal is therefore avoided. This is a supplementary protective measure that does not fundamentally prevent moisture from entering the interior of the luminaire (this is achieved by the interaction of the seal and the sealing rib 26), but it does provide additional protection for the luminaire 1.

[0035] This splash guard edge 25 also preferably extends fully over the entire outer circumference of the cover 20, but is interrupted at certain points. These are the points where the locking areas 30 are provided, which enable the cover 20 to be locked to the light housing 50 without tools. Several of these locking areas 30 are evenly distributed around the circumference of the cover 20, with a single locking area located in the Fig. 8 and Fig. 9 is shown enlarged.

[0036] The locking area 30 features, in particular, a rib-like locking projection 31 on the outer circumference of the sealing rib 26, which is supported on its underside by two trapezoidal support ribs 32. This locking projection 31 with the support ribs 32 is intended to engage in a corresponding locking recess in the light housing 50. However, to allow the locking mechanism between the cover 20 and the light housing 50 to be released again at a later time, a rectangular opening 28 is provided above the locking projection 31 in the splash guard edge 25, through which access to the locking projection 31 is provided. Thus, there is an interruption in the splash guard edge 25, which allows the locking mechanism between the cover 20 and the light housing 50 to be released later.

[0037] At the same time, however, there is of course a risk that water could penetrate the sealing area of ​​the luminaire housing through this interruption in the splash guard edge 25. To prevent this, two additional, vertically extending webs 29 are provided, which extend downwards from the end regions of the opening 28 to the locking projection 31. These webs 29, which have a shallower depth than the locking projection 31, rest against the wall of the luminaire housing 50 on both sides of the locking recess described in more detail below when the luminaire housing is locked in place. Thus, while splash water can penetrate into the area above the locking projection 31, it will not penetrate further into the connection area, as this area is completely enclosed by the corresponding wall of the housing housing, the webs 29, and the locking projection 31.The webs 29 and the locking projection 31 accordingly bridge the opening 28 splash guard edge, so that a completely circumferential splash guard is achieved in the area of ​​the connection between cover 20 and tray 50.

[0038] Furthermore, an additional web 27 is provided on the inside of the sealing edge 26 on both sides of the locking areas 30. These additional webs 27 support the interaction of the locking areas 30 of the cover 20 with corresponding locking elements of the tray 50, which will be explained in more detail below.

[0039] It should also be mentioned that the surrounding splash guard edge 25, in addition to its primary function of protecting against splashing water as described above, also serves as a stacking aid. This means that several light covers 20 of the type shown can be easily stacked on top of each other, with the lower edge of one cover 20 resting on the splash guard edge 25 of the cover 20 below it. This facilitates storage and transport of the cover 20. Furthermore, the shape of the cover is designed such that, as already mentioned, it can be easily manufactured using injection molding.

[0040] The design of the light fixture 50 can Fig. 10 to 17 and 19 are taken from the following, whereby the essential features for the sealing connection of the tub 50 with the cover 20 will first be explained.

[0041] The luminaire housing 50 initially has a pot- or trough-like configuration and its dimensions essentially correspond to those of the cover 20. Cable leads, which will be explained later, can be provided on the base surface 51 and the end faces 53, through which the electronic components inside the luminaire 1 are connected to external power supply lines.

[0042] The two side walls 52 and the end walls 53 of the light housing 50 comprise an opening facing the cover 20, as shown in the enlarged illustration of Fig. 13 The light fixture 50 is double-walled in this area of ​​the opening. More precisely, according to the sectional view, Fig. 14 The side and end walls 52, 53 are first extended by a first web 62. Furthermore, the basin 50 is laterally extended by a second, angled web 61, this second outer web 61 then running essentially parallel to the inner web 62, but projecting slightly beyond it. In this way, a sealing channel 60 is formed that completely encompasses the opening of the basin 50, the outer wall of which is formed by the web 61 and the inner wall by the web 62, and which has a seal 63 in its base region. Preferably, this seal is foamed into the channel 60 after the basin 50 has been manufactured, or introduced by alternative methods, and then forms a contact surface for the lower edge of the sealing web 26 of the cover 20. This engages in the channel 60 over its entire circumference and, by bearing against the seal 63, ensures that the interior of the luminaire housing is protected from dust and / or moisture.

[0043] A reliable retention of the cover 20 on the light tray 50 is achieved by detent areas 65, which are enlarged in the illustration according to Fig. 13 are recognizable. These detent areas 65 are formed by the fact that the outer web 61 has a thickening 66 which faces the interior of the sealing channel 60 and has a detent recess 67. This recess 67, however, only penetrates the thickening 66, but not the entire outer web 61. The housing of the tub 50 is therefore also closed to the outside in this area.

[0044] The positioning of the locking areas 65 corresponds to the arrangement of the previously described locking areas 30 of the cover 20. When the light housing 50 is joined with the cover 20, the locking projections 31 engage in the corresponding recesses 67. The angled support ribs 32 provided on the underside of the locking projections 31 form a chamfer which, when the cover 20 is placed on the housing 50, causes the outer rib 61 to move laterally. This facilitates the joining of the housing 50 and the cover 20.

[0045] Once the cover 20, with its sealing rib 26, has been sufficiently inserted into the sealing channel 60, the locking projections 31 and ribs 32 fully engage in the corresponding recesses 67 of the luminaire housing 50, and the outer rib 61 can return to its original position. This ensures a reliable and stable connection between the cover 20 and the housing 50. As already mentioned, the dimensions of the components responsible for the locking mechanism are selected such that the lower edge of the sealing rib 26 of the cover 20 rests against the seal 63 provided in the base of the channel 60, thereby achieving the desired protection of the interior of the luminaire housing.

[0046] How to continue based on Fig. As can be seen in Figure 14, in this assembled state, the circumferential splash guard edge 25 of the cover 20 rests on the end face of the outer web 61 to provide the splash protection already described, in addition to the internal seal, and to prevent larger particles from entering the sealing area. Openings exist only through the recesses 28 of the splash guard edge 25 in the area of ​​the individual locking points. These openings are necessary to allow the locking mechanism between the tray 50 and the cover 20 to be released again at a later time. However, as already mentioned, the corresponding spaces are enclosed by the lateral webs 29, which abut the outer web 61 of the tray 50 from the inside, and by the locking projection 31. Therefore, any liquid or dirt particles entering this area cannot easily reach the sealing channel 60.

[0047] This defined interaction between the locking areas 30 of the cover 20 and the locking areas 65 of the tray is further supported by the fact that the webs 27 provided on the inner circumference of the sealing edge 26 bear against the side of the inner web 62 of the tray 50 facing the channel 60 when assembled. That is, the components of the cover 20 responsible for locking and sealing are held in a defined position relative to the interacting elements of the tray 50 by the additional support provided by the webs 27.

[0048] The locking mechanism between cover 20 and light housing 50 is released by inserting a tool, such as a slotted screwdriver, into the locking area through the opening 28 of the splash guard edge 25. By twisting this tool or screwdriver, the outer rib 61 of the housing 50 can be bent outwards, allowing the locking projection 31 to disengage from the locking recess 67. In this way, the locking mechanism between cover 20 and light housing 50 can be released very easily and intuitively. As already mentioned, this is only possible with the aid of a suitable tool, which is usually readily available. The ribs 29 and the locking projection 31 also prevent the tool from accidentally touching and potentially damaging the seal 63 during insertion.

[0049] In this way, a reliably sealing connection between cover 20 and light housing 50 can be easily achieved, which can also be easily disassembled if necessary. As described in Fig. 13. It is apparent that the inner web 62 opposite the locking recess 67 has an opening or recess 68. While this is not relevant for the subsequent use of the light housing 50 or for its interaction with the cover 20, it does facilitate the production of the housing 50 by injection molding. The opening 68, corresponding to the recess 67, significantly simplifies the demolding of the light housing 50 from the injection mold after injection molding.

[0050] Other special features of the luminaire housing 50 relate to the options for supplying external power cables and measures that allow for the arrangement of light-generating components within the luminaire housing. These features will be explained in more detail below.

[0051] Regarding the possibility of supplying external power cables, the luminaire housing 50 provides several options for creating a cable entry point. These are areas 54, 55, and 56, which are initially closed after the housing 50 is manufactured. However, in this case, they feature ring-shaped material weakenings that allow circular sections of the housing to be broken out or removed. In this way, cable entry points can be created through which cables can be routed into the interior of the luminaire. These openings can then be sealed by appropriate additional measures such as grommets or similar components.

[0052] A special feature of the illustrated luminaire housing 50 is that, unlike the usual design, the areas for forming cable entry points are not only located at the ends of the housing 50, but also allow for a central cable entry. In the illustrated housing 50, corresponding areas 54 with material reductions are initially provided centrally in the base surface 51 of the housing 50. Furthermore, additional areas 55 and 56 are also formed at the ends of the base surface 51 and on the end faces 53. Depending on the type of mounting of the luminaire or its application, the routing of an external power supply cable can therefore be flexibly adapted.

[0053] Furthermore, two parallel suspension channels 57 are formed at each end of the base surface 51. These allow, for example, a clamp connected to a suspension cable for suspending the luminaire 1 to engage. Such clamps are already known and enable simple cable or pendant suspension of a luminaire 1. In the present case, the length of the channels 57, into which the arms of the suspension clamp are to engage, is dimensioned such that a certain amount of play remains for positioning the suspension clamp. This also increases the flexibility with regard to the arrangement of the luminaire 1.

[0054] The aforementioned suspension channels 57 can also fulfill a further function. Since the areas of the housing enclosing the channels 57 form linear surface sections, which also extend beyond the curved configuration of the outer surface of the luminaire housing 50, these areas can also be used as support or storage surfaces, thus enabling the simple stacking of identical luminaire housings 50. As explained in connection with the cover 20, this leads to simplified storage and improved transport of the housing 50 to the location of final luminaire installation.

[0055] Further special features of the luminaire housing 50 relate to the design of the interior. It is particularly noticeable that ribs 70, 80 are positioned along the inner walls of the two side surfaces 52 of the housing 50. These serve, on the one hand, to increase the stability of the housing 50, but especially also to enable the tool-free arrangement and fastening of further luminaire components.

[0056] In the illustrated embodiment, two different types of ribs are provided, each with a different design. In the illustrated embodiment, two ribs of the first type 70 and four ribs of the second type 80 are provided on one side of the tub 50. The ribs of the first type 70, which are positioned in the second and fifth positions longitudinally in this case, will be explained in more detail below. Of course, it would also be conceivable to vary the arrangement and the number of different rib types.

[0057] The shape of a rib of the first type 70 is particularly evident in Fig. 12 as well as in Fig. 15. This section initially has a first lower section 71, which—due to the curved outer shape of the housing 50—has approximately the shape of a quarter ellipse and, as shown in the illustration, is provided with a vertical first flank 72 and a horizontal second flank 73. Separated from this first section 71, a further rib section 74 is formed above the horizontal flank 73, which is approximately in the form of a right-angled triangle, although the hypotenuse is angled. Together with the upper edge 73 of the first rib section 71—and the side wall of the housing—the second rib section 74 encloses a locking recess 75, which serves to hold the device carrier described in more detail below. At its end facing the center of the lamp housing 50, the horizontal edge 73 also has a slight elevation, which laterally limits the locking recess 75.

[0058] The lower rib section 71 also has an approximately triangular additional locking recess 76 in the area of ​​the vertical edge 72. This allows, as shown in the illustration, Fig. 15 the locking of a into Fig. 16 individually depicted cable holders 90. This holder 90 – made, for example, of plastic – is generally designed in an approximately C-shape with a central leg 91 that laterally transitions into two inclined side legs 92, each of which has an end section 93 running parallel to the central leg 91 at its outer end. A slot 94 is provided in each of these end sections, so that the end section 93, which engages in the recess 76 of the rib 70, encompasses the lower part of the rib 70. This cross-like interlocking of the rib 70 and the wire holder 90 results in the wire holder being held securely in the recess 76 of the rib 70. Fig. The wire holder 90 is fixed in the position shown in Figure 15. Since the wire holder 90 is symmetrically designed and interacts with the corresponding opposite rib 70 of the housing 50 in the same way, it can be easily snapped into the housing 50 in the arrangement shown. Feet 95 formed on the underside of the central area 91 support the wire holder 90 against the base of the housing 50. Cables can then be laid between this base and the wire holder 90, supported by several wire holders fixed in the housing 50 in such a way that they run along the base of the housing 50 and do not interfere with the further arrangement of additional components in the luminaire housing.

[0059] In the configuration shown, the corresponding locking recesses 76 for holding the wire holder 90 are provided on the ribs of the first type 70. Of course, corresponding locking recesses could also be provided additionally or alternatively on the ribs of the second type 80 described below. This would allow for an increase in the number of wire holders 90 to be used, which is quite useful depending on the length of the luminaire 1.

[0060] The locking mechanism between wire holder 90 and lamp housing 50 can be easily released by pressing on or pulling on the central area 91 of the holder 90. Due to its flexibility, the end areas 93 of the wire holder 90 are pulled slightly inwards, thus releasing the locking mechanism with the corresponding rib 70.

[0061] Furthermore, it is provided that the ribs of the first type 70 have a feed-through opening 78 laterally offset from the locking recess 76. This can be used, if desired, for routing additional cables or lines. It should also be noted that such an opening 78 could, if necessary, also be provided in the ribs of the second type 80.

[0062] The shape of the ribs of the second type 80 can also Fig. 12. These consist primarily of a lower section 81, which has a straight vertical edge 82. As already mentioned, recesses or openings corresponding to the locking recess 76 or the opening 77 of the ribs of the first type 70 could be provided in this lower rib section 81.

[0063] The upper end of this lower rib section 81 is provided with a triangular projection 83, which in turn – together with the side wall of the tub 50 – defines a locking recess 84. In contrast to the locking recess 75 of the first rib 70, however, the locking recess 84 here is not limited at the top, since the rib 80 is only continued by a narrow web 85.

[0064] Further ribs 88 are also provided at the end faces of the lamp housing 50. These ribs 88 facing the interior (see Fig. 11) However, they extend only over the height of the inner web 62 of the sealing channel 60 and are oriented perpendicular to the ribs of the first and second types 70 and 80 respectively, which are arranged on the longitudinal sides of the tray 50. They also support, among other things, the stacking of several identical light trays 50.

[0065] The function of the previously explained ribs 70, 80, and 88 in connection with the attachment of the device carrier will be explained below. First, however, the following will be discussed: Fig. 17 and Fig. 18. Another special feature of the light fixture 50 is briefly described. This fixture has at least one feature on its outer surface that is... Fig. 17. A recognizable warning symbol 250, in this case a lightning bolt 251 warning of voltage, is present. Of course, there are various ways to apply this warning symbol 250 to the outside of the light housing 50 after its manufacture. For example, the symbol 250 could be embossed, or of course, it could be affixed or printed onto the light housing 50. In this particular case, however, the symbol is intended to be created simultaneously during the injection molding process of the housing 50.

[0066] For this purpose, a special slide used in the injection molding tool is provided, which is in Fig. Figure 18 shows the symbol 250, which is designated with the reference numeral 300. This utilizes the fact that the depicted triangular symbol 250, containing the lightning bolt 251, can be realized by using a tool area with surface areas 301, 302, and 303, which are offset from each other in a stepped fashion. The first surface area 301, which forms the first part of the interior of the triangle, is thus adjoined by the second surface area 302, which has the shape of the lightning bolt 251 and is slightly raised above the first area 301. The triangle is finally completed by surface area 303, which is itself raised above the second surface area 302.This special design of the slide 300 means that, during the injection molding process, the symbol 250 – with its corresponding stepped surface areas – can be applied directly to the outside of the light housing 50, while still allowing for easy demolding of the housing 50. In this way, the goal of manufacturing the light housing 50 solely by injection molding and avoiding subsequent additional work steps can be achieved in a very simple and elegant manner.

[0067] The third essential component of the damp-proof luminaire 1 is the already mentioned gear tray 100, which is initially installed in the Fig. 20 and Fig. Figure 21 shows a long, sheet metal part on which the components of the luminaire 1 responsible for generating the light are to be mounted. A central, plate-shaped area 101 is elongated and slightly shorter than the actual length of the luminaire 1. On both sides of the plate-shaped area 101, the mounting bracket 100 has profiled side legs 102, which are bent in a U-shape at their end regions 103.

[0068] The configuration of these profiles or the side legs 102 can be shown, for example, in the representation in Fig. 24 can be removed. It allows locking with the light housing 50, whereby in the locked state the in Fig. 19. The arrangement is recognizable. It is evident how the U-shaped curved end sections 103 of the side legs 102 of the device carrier 100 interact with the locking recesses 75 and 84 of the ribs 70 and 80, respectively. In particular, it is evident that the second upper rib section 74 of the rib of the first type 70 forms a limit stop for the end sections 103 in a direction perpendicular to the plane of the opening of the housing 50. The projections 83 of the ribs of the second type 80, in turn, form a lateral limit for the side legs 102. Both rib types 70 and 80 thus primarily fix the side leg 102 in one direction each, with both directions being essentially perpendicular to each other, so that the device carrier 100 is fixed in the desired position on the housing 50. The shape of the corresponding projections or...The ribs facilitate the insertion of the U-shaped, and therefore somewhat flexible, end section 103 into the locking recesses 75, 84 of the ribs 70, 80, thus enabling easy insertion of the device carrier 100 into the housing tray 50. This locking mechanism can also be released manually if the device carrier 100 needs to be replaced or removed for maintenance purposes.

[0069] The mounting bracket 100 serves to hold both the light-emitting units responsible for generating the light, in this case several LED boards 130, and, opposite it, the positioning of further components responsible for supplying power to the LED boards 130. These are corresponding control gears 140, 141 and connection terminals 142, 143, which are then connected via cables (not shown) to the power supply lines leading into the interior of the luminaire, or from the control gears 140, 141 to the LED boards 130.

[0070] Both the LED boards 130 and the power supply components 140 to 143 are held by the device carrier 100, with the components positioned on both sides of the plate-shaped area 101. It is provided that frustoconical spacers 110 are formed on the side of the plate-shaped area 101 where the LED boards 130 are arranged. These spacers 110 form raised contact surfaces for the LED boards 130, so that they—as, for example, in the Fig. 24 and Fig. 25 recognizable - exhibit a certain distance h to the surface of the plate-shaped area 101.

[0071] This spaced arrangement of the 130 LED boards shown here offers several advantages.

[0072] Firstly, there is only a very weak direct thermal coupling between the LED boards 130 and the control gears 140, 141. Both components – the LED boards 130 and the control gears 140, 141 – generate heat during operation of the luminaire 1. In the case of excessive thermal coupling, there would be a risk of heat being transferred to the other component, ultimately resulting in excessively high temperatures unsuitable for operation and potentially leading to damage. The spaced arrangement using the spacers 110 now largely results in thermal decoupling between the components, thus avoiding this risk.

[0073] Another advantage is that fastening measures, for example for the LED boards 130, do not impair the arrangement of the other components on the opposite side of the device carrier 100. As shown in particular in the illustration of Fig. As can be seen from the extract 25, it is provided that the LED boards 130 are screwed to the device carrier 100. The spacers 110 each have bores or openings 112 on their upper, flat contact area 111, which allow a screw 115 to pass through. Without the spacers 110, this screw 115 would penetrate the plate-shaped area 101 of the device carrier 100 and protrude on the opposite side. There, it would potentially obstruct the arrangement of the control gear 140, 141, or the like, which is no longer a problem due to the use of the spacers 110 according to the invention. Similarly, fastening the connection terminals 142, 143 with corresponding locking pins, which penetrate the plate-shaped area 101 of the device carrier 100, does not impair the arrangement of the LED boards 130.The available area of ​​the plate-shaped region 101 can therefore be used efficiently for arranging components for light generation.

[0074] The spacers 110 are preferably an integral part of the device carrier 100. This is generally formed by a correspondingly stamped and formed sheet metal part, whereby the spacers 110 are also formed by stamping and embossing the corresponding area. Ideally, as already mentioned, the spacers 110 are designed in a frustoconical shape with a flat contact surface. They are also curved in two mutually perpendicular planes, which increases their stability so that the LED boards 130 are reliably and stably supported. Stable support of the boards 130 is further enhanced by the fact that the spacers 110, as in particular in Fig. The components 21 are positioned alternately offset from one another in the longitudinal direction of the device carrier 100. A single circuit board 130 should rest on at least three spacers 110, thereby achieving a defined support. Alternatively or additionally, the spacers 110 could also be provided on the opposite side of the device carrier 100, thus enabling an arrangement of the operating devices 140, 141 spaced apart from the plate-shaped area 101.

[0075] The circuit boards 130 are preferably attached to the device carrier 100 by means of screws, as already mentioned, with the circuit board 130 resting on at least three spacers 110. It is preferably provided that the circuit board 130 is fixed centrally in the longitudinal direction and supported with a certain amount of play at both end faces. This can be achieved, for example, by providing a circular hole in the center of the circuit board 130 for screwing, while elongated holes are provided at the end faces. Similarly, the sequence elongated hole-hole-elongated hole can also be provided for the openings 112 in the bearing surfaces 11 of the spacers 110. This measure accommodates different longitudinal expansions due to the different material types, while the circuit board 130 is generally positioned in the desired position relative to the device carrier 100 due to the central fixing.

[0076] When assembling the luminaire 1, it is therefore planned that the gear tray 100 is first fitted with the components responsible for generating the light. This then results in the configuration shown in the Fig. 22 and Fig. 23 recognizable configurations, whereby cabling still needs to be carried out between the control gear 140 and the LED board 130. Since both components are positioned on opposite sides of the device carrier 100, the connecting cable must therefore be routed from one side to the other across an edge area of ​​the device carrier 100. For this purpose, it is provided that - as in Fig. Figure 21 shows that a recess 116 is formed in the end face of the device carrier 100. The cable connecting the control unit 140 to the LED board 130 – not shown in the figures – is to be guided through this recess 116. The shape of the recess 116 and the arrangement of the LED board 130 are chosen such that the end face of the board 130 already projects into the area of ​​the recess 116. This is intended to prevent the cable, which runs from one side of the device carrier 100 to the other, from directly contacting the circumference of the recess 116 and potentially damaging the cable insulation due to burrs or sharp edges created during the manufacturing of the device carrier 100. Of course, the shape of the recess could also be chosen differently to achieve this purpose.However, it is generally desirable that the cable does not come into contact with sharp edges of the device carrier 100.

[0077] As already mentioned, the device carrier 100 is preferably manufactured using a stamping / embossing process, in a single operation. This approach offers the advantage that the individual elements of the device carrier 100, i.e., the spacers 110, openings, locking slots, and the like, are aligned and positioned with great precision. This allows for automated assembly of the device carrier 100, for example, using a robot, whereby any index openings, which define the reference positions used for assembly, can be incorporated into the device carrier 100 simultaneously with the other elements during manufacturing.

[0078] The appropriately equipped and wired device carrier 100 is then inserted into the housing tray 50 and locked or snapped into place there in the manner described above using the ribs 70 and 80. The end-face ribs 88 of the tray 50 form a centering and guiding aid, thus facilitating the appropriate positioning of the device carrier 100 in the housing of the luminaire 1.

[0079] As mentioned at the outset, in a specific variant of the luminaire housing, not only the cover 20 but also the housing liner 50 is designed to be translucent in order to achieve secondary light emission. The light used for this purpose is also intended to originate from the LEDs 131 of the LED boards 130, thus requiring that light be allowed to pass into the housing area where the control gears 140, 141 are located. In the illustrated case, this is achieved by the plate-shaped area 101 having light transmission openings 117 on both longitudinal sides. These light transmission openings 117, which in this case are oval (other shapes would of course be conceivable) and preferably punched out, are located laterally to the areas where the LED boards or the control gears 140, 141 are positioned and should not be obscured by these components.Scattered light or light reflected from the inside of the cover 20 can then enter the area of ​​the luminaire housing facing away from the cover 20 via these light transmission openings 117 and be emitted here via the translucent housing diffuser 50. To increase the efficiency of utilizing the light generated by the LED boards 130, the gear tray 100 is preferably designed to be reflective. It can either be made of a reflective material or be coated or painted accordingly to be reflective.

[0080] Finally, the device carrier 110 can also be used to mount a so-called primary optic, which is intended to influence the light generated by the LED boards 130 before the actual light emission through the cover 20 of the luminaire 1. The use of a corresponding primary optic 150, which is located in the Fig. 26, Fig. 27, Fig. 28 to Fig. The primary optic shown in Figure 29 is particularly advantageous when a material that does not strongly scatter light is chosen for the cover 20 of the luminaire 1. Without the use of a light-scattering primary optic, the LEDs 131 of the LED boards 130 would then be visible as individual point light sources, which is generally a disadvantage due to the desire for uniform or homogeneous light emission. The primary optic shown is therefore intended specifically for the case where the cover 20 is made of PMMA, although it could of course also be used in the variant where the cover 20 is made of PC.

[0081] In such a case, it is therefore planned that the [something] in the Fig. 26, Fig. 27, Fig. 28 to Fig. The primary optic 150, shown in Figure 29, is to be attached to the device carrier 100. This primary optic 150 consists of a light-diffusing material (e.g., PC), which initially causes diffuse scattering of the light. The basic shape of the primary optic 150 corresponds approximately to that of the luminaire cover 20. The primary optic 150 is also elongated and dome-shaped so that it can overlap the LED boards 130. Snap-in projections 155 are provided on both sides of the end faces of the primary optic 150. These projections are located on downwardly projecting ribs 156 of the optic 150 and are dimensioned such that they engage from the outside in corresponding snap-in openings 120 of the device carrier 100. These snap-in openings 120 are formed in the side arms 102 of the device carrier 100.

[0082] The ribs 156 of the primary optics 150 thus overlap laterally the plate-shaped area 101 of the device carrier 100, allowing the locking projections 155 to engage in the recesses 120 from the outside. Across its wider circumference, the primary optics rest on the surface of the plate-shaped area 101 of the device carrier 100, overlapping both the LED boards 130 and the light transmission openings 117. This prevents unwanted light emission not affected by the primary optics 150. However, the circumferential shape of the primary optics 150 can optionally be designed such that a small area, e.g., a corner area, of the plate-shaped area 101 of the device carrier 100 remains free, i.e., not covered by the primary optics 150. A status LED, for example, can then be positioned in this area to indicate the operating status of the luminaire 1.To improve the visibility of such a status LED, it is advantageous if its light is not mixed with the light of the actual LEDs 131, i.e., not scattered by the primary optics 150, which is ensured by the measure mentioned above.

[0083] To release the locking mechanism between the device carrier 100 and the primary optic 150, the webs 156 simply need to be bent laterally so that the locking projections 155 can leave the recesses 120. A unit consisting of the device carrier 100 and the primary optic 150 locked to it is thus in Fig. Figure 29 shows that this assembly can then be inserted into the luminaire housing 50 as a whole, and thus in a simple manner, as described above. The primary optic 150 is not located in the area of ​​the U-shaped end sections 103 of the side legs 102, so that the locking of the device carrier 100 with the housing 50 is not affected.

[0084] Finally, an advantageous feature of the primary optics 150 in the illustrated embodiment is that, viewed longitudinally, it is divided into successive segments 159 by corresponding ribs 157, which form grooves 158 in the emitting surface of the optics 150 from the outside. The light influenced by the primary optics 150 thus consists, before it is emitted through the actual cover 20 of the luminaire 1, of individual partial beams corresponding to the respective segments 159 of the primary optics 150.

[0085] In the case of uniform light emission over the entire length of the device carrier 100, this initially only results in an interesting lighting effect, as the light is perceptibly divided into individual clusters. Alternatively, the segmented division of the primary optics 150 can also be used to actually emit different amounts of light along individual longitudinal sections of the luminaire 1. This then makes it possible, for example, not only to illuminate, i.e., brighten, an area assigned to the luminaire 1, but also to convey information or instructions in this way.A corresponding control of the LED boards 130 could then be used to generate a time-controlled light output across the various segments 159, thereby creating, for example, a chasing light moving along the luminaire 1, which signals a preferred direction (e.g., of an escape route or the like). Light output in different colors could also be implemented across the individual segments 159, which could then be used, for example, in parking lot lighting to indicate whether a parking space below the luminaire is occupied or available.

[0086] Overall, the light fixture shown can be used to achieve various lighting effects. A particular advantage of this fixture is that its various components can be easily manufactured and assembled.

Claims

[1] Luminaire housing (50) which is designed to be connected to a translucent cover (20) to form a closed luminaire housing, wherein the luminaire housing (50) has ribs (70, 80) projecting into its interior which are designed to detachably hold a support element (100) for light source units, characterized by , that at least part of the ribs (70, 80) have locking recesses (76) for locking a cable holder (90). [2] Luminaire tray according to claim 1, characterized by , that the ribs (70, 80) are arranged on two opposite side walls (52) of the light tray (50). [3] Lamp tray according to claim 1 or 2, characterized by, that at least two different rib types are present, each of which has a locking recess (75, 84) provided for locking with the carrier element (100), wherein the locking recesses (75, 84) of the different rib types are designed differently and wherein the locking recesses (75, 84) together fix the carrier element (100) in a provided position. [4] Luminaire tray according to claim 3, characterized by , that the ribs of a first type (70) fix the support element (100) in at least a first direction and that the ribs of the second type (80) fix the support element (100) in a second direction substantially perpendicular to the first direction. [5] Luminaire tray according to one of the preceding claims, characterized by , that at least some of the ribs (70, 80) have through-holes (78). [6] Luminaire tray according to one of the preceding claims, characterized by, that it has a warning symbol (250) on its outside, which is formed by several surface sections offset from each other in a step-like manner. [7] Luminaire tray according to one of the preceding claims, characterized by that it has a circumferential sealing channel (60), wherein a seal (63) is arranged in the bottom area of ​​the sealing channel (60). [8] Lamp tray according to claim 7, characterized by , that the light tray (50) is double-walled in the area of ​​the sealing channel (60), wherein an outer wall (61) of the sealing channel (60) has locking recesses (67) facing the channel. [9] Luminaire tray according to claim 8, characterized by , that an inner wall of the sealing channel (60) has recesses (68) opposite the detent recesses (67). [10] Luminaire tray according to one of the preceding claims, characterized by, that these areas have openings for cable entry (54, 55, 56), wherein at least one of the areas is formed in the center of a base surface (51) of the light tray (50). [11] Luminaire tray according to one of the preceding claims, characterized by that it consists of polycarbonate or polymethyl methacrylate. [12] Luminaire housing, in particular for a damp-proof luminaire, wherein the housing is formed by a luminaire tray (50) according to one of the preceding claims and a cover (20) to be connected to the luminaire tray (50). [13] Luminaire housing according to claim 12, characterized by , that the cover (20) and the light tray (50) are each made of the same material. [14] Luminaire (1), in particular a damp-proof luminaire, comprising a luminaire housing according to one of claims 12 and 13 and means for generating light arranged in the luminaire housing. [15] Luminaire according to claim 14, characterized by, that the means for generating light are arranged on a carrier element (100) which is locked to the light tray (50). [16] Luminaire according to claim 15, characterized by , that the support element (100) has light transmission openings (117) which allow light to pass from an area of ​​the housing in which the means for generating light are arranged into an area opposite the means for generating light with respect to the device carrier (100).

Images