CN114746692A

CN114746692A - Groove-shaped lamp shell

Info

Publication number: CN114746692A
Application number: CN202180006912.8A
Authority: CN
Inventors: W·贝克特尔; M·施皮格尔; C·恩德
Original assignee: Zumtobel Lighting GmbH Austria
Current assignee: Zumtobel Lighting GmbH Austria
Priority date: 2020-01-20
Filing date: 2021-01-14
Publication date: 2022-07-12
Anticipated expiration: 2041-01-14
Also published as: CN114746692B; EP4094012A1; DE102020101162A1; AT17709U1; WO2021148290A1

Abstract

The lamp housing (10) has a housing base (11) and a housing wall (12) which laterally surrounds the housing base (11) and which together with the housing base (11) defines a lamp space, wherein the housing base (11) has at least one flat area (25) for receiving at least one lamp component, preferably on all surfaces, and wherein substantially all surface areas of the lamp housing (10) forming an outer surface of the lamp housing (10) are designed such that, when a lamp (1) using the lamp housing (10) is installed, they allow liquid to flow through the outside of the housing wall (12) and/or through an opening (30) formed in the lamp housing (10).

Description

Groove-shaped lamp shell

The invention relates to a trough-shaped lamp housing for implementing a lamp. In particular, the object is to form a so-called high-top lamp by means of a lamp housing.

The term high-ceiling lamp refers to a lamp that is used, for example, to illuminate a large lobby or industrial park. In this case, the lamp is usually positioned at a relatively large distance from the ground, and therefore it is required that the lamp generates light of high intensity and then radiates it to an area below, such as a hall. Relatively powerful lighting devices are therefore used in these types of lamps, which must then be installed in a suitable manner, taking care to ensure, on the one hand, that the heat generated during operation of the lighting device is properly dissipated and, on the other hand, that the lighting device is protected from external influences, in particular moisture and/or dust.

Lamps of the above-mentioned type are known, for example, from patent WO 2014/086770a1 of the applicant. The lamp described therein is formed substantially of an aluminum diecast body with an extended cooling fin structure and cooling channels for dissipating the large amount of heat generated during operation of the lighting device. The operating device is centrally located between the two elongated LED arrays, wherein the design of the die-cast body is such that air can also flow around the centrally arranged housing in which the operating device is accommodated, in order to allow sufficient heat dissipation. Using the corresponding cooling air openings, thermal decoupling between the housing for the operating device and the region of the lamp body in which the lighting device is arranged is also achieved to the greatest possible extent.

The lamps known in the prior art have proven themselves in various ways and are characterized by their excellent light output and at the same time by a high operational reliability. However, it must be considered here that such lamps are generally used in environments where long-term damage to the housing is expected due to external conditions. For example, it has been shown that with lamps of the above-mentioned type there is often a risk of water accumulating on certain areas of the outside of the housing. Since this water contains contaminants from the environment and may therefore be potentially chemically aggressive, there is a risk of corrosion occurring at these respective locations and ultimately damaging the housing.

The underlying object of the invention is therefore to specify a way of providing a lamp which is comparable in terms of its photometric properties, but which is better and more reliably protected against external influences, in particular against moisture and humidity.

This object is achieved by a lamp housing having the features of claim 1. Advantageous further developments of the invention are the subject matter of the dependent claims.

It is an object according to the invention to provide a housing comprising a housing base and a housing wall laterally surrounding the housing base and delimiting a lamp space together with the housing base. The space serves for accommodating the respective lamp component and is covered on its side, intended for emitting light by the respective at least partially light-transmitting cover. According to the invention, the lamp housing is designed such that substantially all surface areas of the housing forming the outer surface of the housing are designed such that, in the mounted state of the lamp using the lamp housing, they allow liquid to flow away over the outside of the housing wall and/or through openings configured in the lamp housing.

Thus, according to the present invention, there is provided a trough lamp housing comprising:

a housing base, and

a housing wall laterally surrounding the housing base and defining a lamp space together with the housing base,

wherein the housing base comprises at least one flat area for receiving at least one lamp component preferably in a planar manner,

and wherein substantially all surface areas of the lamp housing forming the outer surface of the lamp housing are designed such that, in the mounted state of the lamp using the lamp housing, they allow liquid to flow away over the outside of the housing wall and/or through openings configured in the lamp housing.

The design of the lamp housing according to the invention thus eliminates the risk of liquid accumulating on certain areas of the outside of the housing and causing the above-mentioned negative effects there. Instead, liquid on the outside or surface of the housing will, due to gravity, immediately flow away over the outside of the housing wall or through the aforementioned opening configured in the housing, so that there is no risk of the surface area of the housing being exposed to chemically aggressive liquids for a long period of time. Due to this measure according to the invention, the housing is significantly better protected from external influences, so that a permanent use of the lamp is ensured.

In addition to the above-mentioned flat receiving region, the housing base preferably also comprises a further region for receiving a further lamp component, in which case at least one, preferably a plurality of, elongate openings arranged one behind the other are configured between the two regions. These openings allow the above-mentioned liquid to run off on the outside of the housing. They also fulfill the additional task of optimizing the cooling of the lamp. On the one hand, the openings make it possible to achieve a certain degree of thermal decoupling between the two receiving areas, so that little or no heat is transferred from one area to the other. On the other hand, the openings may also serve to allow air to flow through, by means of which the heat generated during operation of the lamp is efficiently dissipated to the environment. Although the lighting device as a whole operates at a relatively high power and in the process generates heat, it is therefore ensured that the various heat-sensitive components of the lamp are sufficiently cooled so as to avoid damage thereto.

In particular, it can be provided that a first region for flat accommodation is used for positioning the lighting device, while a further region is used for accommodating an operating device, for example for operating the lighting device. Since these additional components usually require a different amount of space than, for example, a flat LED circuit board, it is preferably provided that the further region forms a receiving space which projects back beyond the plane of the flat receiving region.

In addition to the above-mentioned measures according to the invention, which aim at preventing the outside of the lamp housing from being damaged by moisture or liquid, it should of course also be possible to sufficiently protect the components arranged in the interior of the housing from moisture. It is therefore preferably provided that one or more regions for receiving lamp components are each surrounded by an annular channel configured to accommodate a seal. The one or more channels preferably extend in a common plane, so that finally, by means of a simply designed cover element cooperating with the seal, the respective receiving region is reliably and efficiently protected from external influences.

As already stated, in the above example, provision is made for the lighting device to be arranged in a first accommodation region, and for the further region to accommodate an operating device for the lighting device. In this case, it is of course necessary to connect the two areas to each other in some way to achieve a proper routing of the power supply lines from the operating device to the lighting device. For this purpose, according to a preferred further development of the invention, provision is made for a connecting channel to be formed on the housing which connects the two receiving regions to one another. However, the channel is constructed in such a way that it does not interrupt the above-mentioned annular channel for receiving the seal. It is thus still possible to sufficiently protect the components accommodated in the lamp housing from external influences, while still ensuring an electrical connection between the regions and the components arranged therein.

According to a further advantageous development of the invention, the heat dissipation from the housing to the environment can be further improved by the formation of cooling fins on the rear side of the housing. The discharge of liquid may be facilitated in particular by the outer surface of the housing forming the rear side of the housing in the mounted state of the lamp using the lamp housing being inclined and/or arched. In other words, all liquid that accumulates on the outside of the housing will run off due to gravity, thereby achieving a significant improvement in the protection of the lamp housing compared to previously known solutions.

The lamp housing is preferably an aluminium die-cast part. However, it is also contemplated that other materials and/or processes may be used to produce the housing.

According to the invention, a lamp is also proposed, which comprises a lamp housing as described above and a lighting device arranged in a planar manner on the aforementioned accommodation region.

The lamp housing according to the invention thus makes it possible to efficiently produce a lamp comprising a housing according to the invention and at least one lighting means accommodated in the lamp housing, in which case there is sufficient protection both for the components arranged inside the housing and for the housing itself against external influences, in particular against moisture.

The invention will be explained in more detail below with reference to the drawings. The figures show:

fig. 1 is a perspective view of a high-top lamp comprising a lamp housing according to the invention, seen from below;

fig. 2 is another perspective view of the lamp according to fig. 1 from above;

FIG. 3 is a view of the underside or interior of a lamp housing according to the present invention;

FIG. 4 is a cross-sectional view of the right half of the lamp housing;

fig. 5 and 6 are two views of a frame-like holding element intended to be connected to the underside of the lamp housing;

fig. 7 and 8 are two views of a cover element which, together with a frame-like holding element, closes the underside of a receiving region for an operating device of the lamp;

figures 9 to 11 are views of a first variant of an optically active cover for a lighting device used in the lamp shown;

fig. 12 to 14 are views of a second variant of an optically active cover for a lighting device used in a lamp;

fig. 15 is a sectional view of a lateral region of the lamp to show the arrangement of the lighting device and the fastening of an optically effective cover for the lighting device with the aid of a frame-like holding element;

FIG. 16 is an enlarged view of a fastening area on the rear side of a lamp housing for hanging the lamp; and

fig. 17 is a suspension bracket for suspending a lamp.

As already stated, the lamp according to the invention, which is described in more detail below and provided with reference numeral 1 in the figures, is intended to form a so-called high-ceiling lamp as a compact but powerful lamp, suitable for use, for example, as a lamp in a lobby. Thus, as with the lamp described in the applicant's patent WO 2014/086770a1, it is intended that the lamp 1 according to the invention shown here is arranged at a relatively large distance from the ground, whereby light of high intensity will be generated and then radiated to an area below, such as a lobby.

The basic arrangement of the components responsible for generating light therefore corresponds to the arrangement of the lamp also provided for WO 2014/086770a 1. This means that one or more operating devices (not shown in more detail in the figures) are located in the central region of the lamp 1, whereby the lighting devices responsible for generating and emitting light are arranged on both sides of the central region. However, the concept according to the invention may also be applied to other configurations of lamps, as will be discussed later.

The essential components of the lamp 1 according to the invention are a trough-shaped lamp housing 10 and a holding element 50 fastened to the lamp housing 10, which together with an optically effective cover 70 and a hood or cover element 100 closes the region of the housing 10 in which the electronic components of the lamp 1 for generating light are arranged. As is the case with the prior art lamp, the lamp 1 according to the invention is also divided into three elongated regions: a central region extending centrally in the longitudinal direction and intended to accommodate operating means and any other electronic components controlling the operation of the lamp 1; and two light emitting areas formed on both sides of the central area, in which the lighting device and optical components for light emission associated with the lighting device are arranged. In the illustration according to fig. 1, the light is thus emitted via two substantially rectangular lateral regions of the lamp 1, which are arranged symmetrically to the longitudinal axis and via which light of high intensity is emitted.

The lamp 1 can be suspended or mounted with the aid of a suspension bracket 150 according to the example shown, which is connected to or suspended from the housing on both end faces on the rear side of the housing 10. These suspension brackets 150, which are described in more detail later, are implemented in such a way that they allow different suspension elements to be suspended or fastened, so that a variety of mounting options are available for the lamp 1. Furthermore, as will also be described in more detail later, the housing 10 is implemented in such a way that these suspension measures do not lead to the risk of moisture entering the interior of the housing 10.

First, discussed below is a detailed construction of a lamp housing 10 according to the invention, which constitutes a central part of the lamp 1.

As can be seen in particular in fig. 1 to 4, in the design example shown, the lamp housing 10 is trough-shaped, with a substantially square housing base 11, from which a laterally surrounding housing wall 12 extends downwards or in the light emission direction of the lamp 1, whereby the housing base 11 and the housing wall 12 delimit the interior of the lamp. The housing 10 is preferably provided here in the form of an aluminium die-cast body, since this allows the design of the housing 10 described in detail below to be achieved more efficiently. In principle, however, the use of other suitable materials is also conceivable. In particular, suitable plastic materials are also conceivable here, which would allow the production of the housing 10 in an injection molding process in a comparable manner to aluminum, but then have to have correspondingly sufficient stability and heat resistance.

The main task of the housing base 11 is to enable the components of the lamp 1 responsible for generating and emitting light to be properly housed or mounted. The housing 10 is therefore designed in the following way: the manner is such that on its side facing the interior of the housing 10, the housing base 11 initially forms two lateral flat areas 25 for accommodating or mounting the lighting device, as will be described in more detail later. A third or central region 20 serves to accommodate an operating device, for example in the form of a transducer, and is arranged centrally between the two lateral regions 25. With regard to its width, this region 20 substantially accommodates the width of such an operating device and is therefore slightly narrower than the two lateral accommodation regions 25. However, it is designed to be considerably deeper than the two receiving areas 25 for the lighting device, thus forming a cuboidal receiving space which projects rearwardly beyond the plane of the flat receiving area 25, but is closed towards the rear. All three

regions

20 and 25 are designed as defined recesses or surfaces in the base 11 of the housing 10, whereby the size of the regions 25 can of course also be selected differently depending on the lighting device used.

Not much heat will be generated during operation of the lighting device and must be effectively dissipated from the housing 10 in order to prevent overheating of temperature sensitive components of the lamp 1. A plurality of cooling fins 14 extending parallel to one another are correspondingly configured on the upper or rear side of the lamp housing 10, which increases the surface area. This promotes heat exchange with the ambient air so that no active cooling measures, such as fans or the like, are required. The fins 14, which have a height of approximately 1cm, extend transversely to the longitudinal direction of the three receiving

regions

20 or 25 and are interrupted, if necessary, by a receiving region 20 for the operating device projecting rearwards. As already stated, this forms a cuboidal recess in the housing base 11, which protrudes significantly towards the rear.

One problem with known lamps of the type shown is that they are sometimes exposed to relatively high levels of humidity due to the environment in which the lamps are used. There is in particular a risk of liquid accumulating on certain areas of the surface of the housing. Due to external factors, such accumulated liquid may be quite chemically aggressive and attack the material of the lamp housing, which may ultimately lead to the risk of corrosion and damage to the entire lamp.

According to the invention, the housing 10 is therefore constructed in a special manner, so that such problems can be avoided.

In particular, it is provided that substantially all of the surface area of the housing 10 forming the outer surface of the lamp housing 10 is embodied in such a way that a relatively large amount of liquid is prevented from accumulating. For this purpose, provision is made for the surface regions mentioned to be designed in such a way that any liquid present can generally run off as a result of gravity.

As can be seen from the sectional view of fig. 4, for example, the rear surface area of the housing 10 is in particular arched, i.e. slightly convexly curved, which ultimately results in substantially no flat surface area on the rear side of the housing 10, in particular no recesses, which allow liquid to accumulate. In principle, instead, each subregion of the outer surface of the housing 10 has a slope or curvature relative to the horizontal, albeit slightly, as a result of which liquid can flow off laterally on the outside of the housing wall 12 or through a through-opening 30 provided centrally in the housing 10.

Consequently, finally, the surface area of the lamp housing 10 is not covered by liquid for a long period of time, so that the possibility of the material of the housing 10 or the corresponding coating being eroded and ultimately causing damage to the housing 10 is excluded. This ensures a permanent protection of the components arranged inside the lamp housing 10.

The arched or inclined design of the mentioned surface areas can also be applied to the aforementioned upper edges of the cooling fins 14, if necessary. However, these fins are usually implemented so narrowly that no significant amounts of liquid accumulate there anyway. Therefore, care must be taken to ensure that the flat area of the rear side 11a of the lamp housing 10 is designed in the manner described above. A slight inclination of the rear side 20a of the receiving region 20 for the operating device is also advantageous in order to also avoid liquid accumulation in this region.

Due to the design of the outer side of the lamp housing 10, in particular according to the invention, which has been discussed so far, the configuration of the inner region will now be described in more detail below.

As previously mentioned, the two lateral accommodation regions 25 are each used for mounting one or more LED circuit boards 130 (see fig. 15), each of which forms a large-area light source. The configuration of these flat receiving areas 25 can be seen in particular in the illustration of fig. 3, which shows the lamp housing 10 without the respective further components of the lamp 1. The two accommodation areas 25 are flat, except for a recess, which will be described below, so as to allow the LED circuit board 130 to rest on a flat surface. This enables heat to be transferred to the housing base 11 during operation of the lamp 1, thereby improving cooling and heat dissipation of the individual lamp components.

The LED circuit board 130 can then be fastened to the lamp housing 10 by means of a screw connection, for example, for which purpose a housing base 11 with a recess or blind hole structure 27 is configured in the respective receiving region 25, which recess or blind hole structure projects outwards with respect to the lamp interior. These recesses 27 are produced during production of the lamp housing 10 and allow the threads of the screw to cut into the respective thin layer material of the blind hole structure when the screw is screwed in, so that a secure fastening is achieved without the housing base 11 being penetrated by the respective screw. This is important because the housing base 11 is thus also sealed in the region of the fastening elements of the LED circuit board 130. The further recess 28 of the flat receiving area 25 can then be used for a corresponding insertion of positioning aids or the like, which for example ensure a reliable alignment and fastening of the LED circuit board 130 or the optically

effective cover

70 or 80 described in more detail below.

The central receiving area 20 for receiving further electronic components, in particular the operating device, will then also be used for feeding a power supply cable for supplying the lamp 1. For this purpose, corresponding openings, not depicted, through which the power supply cables can pass, will be provided on the rear side 20a or the side walls 20b of the accommodation area 20. Additional sealing measures, for example in the form of gaskets, can then enable the power supply cable (not shown in more detail) to be led out in a sealed manner.

In the installed state of the lamp 1, it is necessary for all three receiving

regions

20 or 25 to be sealed or closed towards the rear. The only exception is the openings 20c, 25c on the bottom surface of the receiving region 25 and on the side wall 20b of the central receiving region 20, which represent the end regions of the two tubular connecting channels 24, via which the lateral regions 25 are respectively connected to the central region 20. As will be described in more detail later, these connection channels 24 serve to route in a simple manner the connection cables from the operating devices provided in the central accommodation region 20 to the lighting devices provided in the lateral regions 25. However, since these channels 24 are sealed against the outside by themselves and open with their ends only into the respective receiving

region

20 or 25, this ultimately means that, overall, the three receiving

regions

20, 25 are completely sealed by the housing 10 toward the rear.

In addition to the aforementioned features, the lamp 1 shown has the notable feature that the operating device and the LED lighting device 130 are not arranged together in a single, tightly closed space, but rather form respective receiving spaces corresponding to the receiving

areas

20 and 25, which are each closed in a sealed manner in themselves, in addition to the above-mentioned connecting channel 24, and then receive the operating device or the LED lighting device 130. The independent arrangement of the lamp components in the three independent spaces opens up the possibility of thermally decoupling the regions from one another on the one hand and also allows cooling air to flow through the intermediate space between two adjacent receiving spaces on the other hand.

It can be seen that three elongated through openings 30 are configured in the housing base 11 on both sides of the central receiving area 20, which are part of a cooling air discharge channel described in more detail below. The through openings 30 are each correspondingly delimited by a circumferential closing edge which extends downwards transversely to the part of the lamp housing 10 comprising the through openings. The through-openings 30, which can of course also be configured differently over their length and if appropriate over their shape, also have the effect of reducing the material in the region between the central receiving region 20 and the lateral receiving region 25, so that there is a certain degree of thermal decoupling and, for example, a reduced risk of heat generated by the LED lighting device 130 being transferred to the region 20 with the operating device. This is important because when using aluminium, the presently preferred material for the housing 10, there is a risk that heat will be transferred very efficiently from one area to another due to its high thermal conductivity. The illustrated through openings 30 make no small contribution to significantly reducing the risk of such heat transfer.

The individual sealing towards the front of the three receiving

areas

20, 25 is made possible by the fact that the

respective areas

20 and 25 are circumferentially surrounded by an annular seal 40 (fig. 4 shows a seal 40 only for the right receiving area 25), which cooperates with a cover element or optical cover, which is described in more detail later on. In the preferred embodiment shown, the

containment region

20 or 25 is defined to be circumferentially surrounded by a raised and/or recessed ring structure 35, respectively, integrally formed in the casing 10, to house the seal 40. In particular, it is provided that, as can be seen in the sectional view of fig. 4, each receiving

region

20 or 25 is surrounded in an annular manner by its own sealing structure 35 which forms a circumferential groove or recess 36 in which a seal 40 is received. The recess 36 thus forms a circumferential channel into which the sealing material can be easily introduced. This may be, for example, a suitable PU foam, which may be injected into the recess 36 in an automated manner during production of the lamp 1. It is advantageous here that the respective annular recesses 36 all extend in a common plane, since this facilitates automatic application of the PU foam applied in liquid form, for example for sealing.

The cross-sectional shape of the illustrated seal 35 prevents the applied sealing material from flowing away, which accumulates at a deep point of the seal 35 and will therefore harden easily there. As an alternative to the PU foam described above, it is of course also possible to use other sealing materials or foams for implementing the seal 40. It is also possible to insert strands of a suitable sealing material, for example, in the recesses 36. In principle, it is also conceivable to use so-called structural sealing materials, in which case the illustrated sealing structure 35 can be omitted.

It should be noted that, although three

housing areas

20 or 25 are sealed circumferentially, as already stated, there must be an electrical connection between the central housing area 20 and the two lateral areas 25 in order to ensure that the operating device is able to supply the LED lighting device 130 correctly. For this purpose, it is provided that the two receiving

areas

20 and 25 are connected to one another by the aforementioned connecting channel 24. These channels 24 are implemented as circumferentially closed hollow cylinders or tubes and open directly into the side wall 20b of the central housing region 20 or into the bottom wall of the respective lateral housing region 25, allowing the respective electrical leads to pass easily. At the same time, however, they do not interrupt the circumferential seal 40, so that sealing towards the front is ensured by the measures described in more detail below. Since each lateral region 25 must be connected to the central containment region 20, the channels 24 extend diagonally downward from the side wall 20b of the central containment region 20 to the adjacent containment region 25, as can be seen in particular in fig. 2.

The sealing of the three receiving

areas

20 or 25 for the operating device and the LED lighting device 130 will now be explained in more detail below. Although the housing 10 provides a seal 40 around these three

regions

20 and 25, it is also necessary to cover the

regions

20, 25 appropriately in order to protect the lamp component 130 from external influences, in particular dust and/or moisture.

Responsible for this task, among other things, is the aforementioned retaining element, which is provided with the reference numeral 50 and is shown separately in fig. 5 and 6. In the design example shown, however, this holding element 50 does not cooperate directly with the seal 40 around the

regions

20, 25, but serves to hold a separate cover element 100 and an optics or light-transmitting

cover

70 or 80, which is described in more detail below, is held by the holding element 50 and is configured such that they each cooperate in a sealing manner with the respective peripheral seal 40.

Thus, as shown in fig. 5 and 6, the holding element 50 initially consists of a circumferential frame 51 which substantially corresponds to the shape of the lamp housing 10, is thus square, and comprises, in the central region, two connecting webs 52 which extend parallel to the longitudinal sides. These webs 52 extend in the region of the abovementioned through-opening 30 of the housing 10 and thus on both sides of the central receiving region 20, initially enabling a dome-or hood-shaped first cover element 100 to be fastened, which is illustrated in fig. 7 and 8. The cover element 100 is fastened by means of a plurality of screws which pass through corresponding holes 53 and screw receptacles 103 in the web 52 of the holding element 50 and in the cover element 100. The screw connection is implemented in such a way that: even if the holding element 50 has been installed, only the cover for the central accommodation area 20 can be opened and, if necessary, maintenance or repair work can be performed separately in this area. In this case, the protected arrangement of the lighting device 130 is maintained such that there is no risk of it being accidentally touched or damaged.

The first cover element 100 comprises a dome or hood-like cover region 101 which is initially surrounded by a peripheral flange-like web 102, whereby the aforementioned screw insertion openings 103 for the screw connection of the holding element 50 are configured on both longitudinal sides of this web 102. The two front regions of the web 102 are then received in corresponding grooves 54 on the underside of the retaining element 50, the dimensions of which are such that the web 102 and the underside of the retaining element 50 are flush in a common plane when the cover element 100 is screwed on (see also fig. 1). The further circumferential web 110 also extends from the periphery of the lid region 101 towards the rear (and thus perpendicular to the circumferential web 102) and forms a circumferential closed sealing edge 111.

When the cover element 100 is mounted, i.e. screwed on, the dome or hood-like cover region 101 protrudes slightly with respect to the plane of the underside of the frame 51 (corresponding to the mounting orientation shown in fig. 15) such that it forms a slightly concave accommodation space a or chamber, as can be seen in the sectional view of fig. 15. Of course, the height of the cover area 101 may be adapted as desired to the dimensions of the operating device and any other electrical or electronic operating components for operating the LED lighting device 130 to be positioned in the receiving space a. It is also conceivable to use additional brackets so that the components accommodated in this area a can be mounted in multiple planes. Thus, in addition to the operating device, batteries or rechargeable batteries for emergency lighting, sensors such as presence sensors or brightness sensors or similar lamp components can also be accommodated in this area a.

It is also conceivable to optionally provide one or more further cover elements 100, the cover region 101 of which is more convex and therefore protrudes significantly beyond the holding element 50 of the lamp 1 and the housing 10 towards the underside. This not only results in a particularly large receiving area for mounting a large number of operating components for the lamp 1, but also opens up the possibility of mounting particularly temperature-sensitive components. This is because during operation of the lamp 1 most of the heat is emitted by the lighting means 130, but this heat tends to migrate upwards, so that components located below this plane of the lighting means 130 can be well protected against overheating, in particular.

For the sealing of the receiving region a, it is essential that, on its region facing the housing base 11, the cover element 100 comprises the aforementioned circumferentially closed web or edge 110 with a sealing edge 111 which, when the holding element 50 is mounted on the lamp housing 10 and the cover element 100 is screwed on, contacts the seal 40, in particular sinks into the flexible material of the seal 40, as shown in fig. 15. The housing 10 and the retaining element 50, to which the cover element 100 is screwed, thus enclose the central receiving space a in a completely sealed manner, so that the operating device and any other components mounted in this area a are safely and reliably protected from external influences.

The holding element 50 is fastened to the housing 10 via a plurality of screw connections, for which purpose the holding element 50, which is made for example of plastic and produced by injection molding, comprises a corresponding opening 55 or a cylindrical reinforcement with an opening corresponding to the hole 31 in the housing base 11 of the lamp housing 10. The corresponding hole 31 of the lamp housing 10 is arranged outside the

region

20 or 25 to be sealed, which is why a simple hole or opening which penetrates completely through the housing base 11 can be used here if desired. However, preferably a cylindrical screw socket with a hole 31 is also provided here, which has the advantage that the housing base 11 can also be closed in this region, which ultimately improves the liquid discharge discussed above.

The two receiving areas 25 for the LED lighting device 130 are also provided with a fit corresponding to the previously described fit between the cover element 100 and the sealing element 40 sealing the receiving space a, whereby in the design example shown the holding element 50 itself is not in direct contact with the sealing element 40 either; this function is instead performed by the light-

transmissive cover

70 or 80, respectively. These covers 70, 80 are accommodated in the area of the opening 56 of the frame 51 formed on both sides of the hood-like cover member 100 and eventually forming the light emission opening of the frame-like holding member 50, and are held and positioned by the holding member 50 so that they can be fitted with the sealing member 40.

Different variations of the light transmissive covers 70, 80 may be used; a first variant is shown in fig. 9 to 11 and another variant is shown in fig. 12 to 14. In both cases, a cover is also used to influence the light emitted by the LED or to maintain the corresponding optics.

In both variants of the cap-or dome-shaped

cover

70 and 80, provision is made for it to comprise a flat

light emission region

71, 81 which is circumferentially surrounded by a U-shaped rim 72, 82 comprising

legs

73, 83 which taper towards the seal 40, a transverse connecting leg and an inner leg connecting the connecting leg to the rest of the

cover

70, 80, whereby the U-shape on the one hand increases the stability of the

cover

70, 80 and on the other hand the

outer leg

73, 83 is directed upwards and forms a sealing

edge

74, 84 which extends circumferentially in a plane. The sealing edges 74, 84 function as the edge 111 of the cover element 100. In other words, when mounted, the

edge

74 or 84 sinks into the circumferential seal 40 on the housing base 11 of the lamp housing 10, thereby completely enclosing the respective receiving region 25 for the LED lighting device 130. Here, this also results in a completely hermetically closed space B (see fig. 15) in which the LED lighting device 130 is now accommodated.

The holding or positioning of the

cover

70 or 80 required for this purpose is effected by the holding element 50, which comprises an inwardly projecting carrying edge 57 or a supporting web surrounding the two openings 56. As can be seen from the sectional view according to fig. 15, the

cover

70 or 80 then rests with the lower edge of its U-shaped rim 72 on the carrying edge 57 in a floating manner, whereby the dimensions of the retaining element 50 are selected such that it is ensured that the

cover

70 or 80 actually engages with the respective seal 40 in a sealing manner. The bearing edge 57 extends in a plane transverse or orthogonal to the pushing direction in which the

lids

70, 80 are pushed into contact with the seal 40. Instead of the illustrated peripherally closed carrying edge 57, it is also possible to provide a supporting or carrying area which is constructed in segments and then arranged distributed, preferably uniformly distributed, around the periphery of the opening 56.

However, when mounting the

cover

70 or 80, a certain amount of play is required, since said play makes it possible to absorb slight lateral displacements due to differences in the thermal expansion coefficient in the material of the lamp 1. In the design example shown, the

cover

70 or 80 is therefore not rigidly connected to the holding element 50 or to the lamp housing 10. Instead, during installation of the lamp 1, only the

cover

70 or 80 is inserted into the holding element 50 respectively and then screwed to the lamp housing 10 in the manner described above.

The two variants of the

covers

70 and 80 shown in fig. 9 to 14 differ mainly in the mounting of further optical elements which are provided in order to influence the light emitted by the LED lighting device 130. In both cases these are TIR lenses 90 on the rear side opposite the light emitting surface of the

respective cover

70, 80, which collect the light emitted by the LEDs in a known manner and emit it in a directed manner towards the lower side. Ideally, one lens 90 is provided for each LED or LED group of the lighting device 130, whereby the LED or the associated LED group is then engaged in a recess 91 formed on the top side of the lens 90. This arrangement of the lens 90 relative to the associated LED and also the configuration of the lens 90 ensures that the light emitted by the LED in almost all directions is influenced in a desired manner and for an efficient light output.

In the variant of the cover 70 shown in fig. 9 to 11 and 15, it is provided that the lens 90 is an integral part of the cover 70 and is accordingly integrally formed on its rear side. In this case, the cover 70 is then preferably always made of the same light-transmitting material, wherein, nevertheless, it is also conceivable for the light to pass through or for the component intended to influence the light to be made of a material different from the rest of the cover 70.

On the other hand, the variant shown in fig. 12 to 14 represents a particularly preferred embodiment of the cover 80, since the cover 80 is now used for additionally mounting a separate component 88 comprising a lens 90. For this purpose, the cover 80 comprises two

circumferential webs

85 and 86 on the rear side opposite the light output side, whereby the web 85 forms with its upper edge an annular bearing surface for a lens plate 88, and the slightly higher circumferential web 86 laterally encloses the plate 88 with a small amount of play. An advantage of this solution is that the lens plate 88 can be slightly laterally displaced, i.e. a slight displacement is possible, with respect to the cover 80. This opens up the possibility of permanent contact of the sealing edge 84 of the cover 80 with the seal 40, and the lens plate 88 may nevertheless move with the LED. Temperature dependent relative displacements can thus be absorbed more easily and a permanently correct positioning of the lens 90 relative to the LED is ensured. Furthermore, the correct alignment of the lens 90 with respect to the LED may also be supported by the construction of a conical positioning or centering pin on the lens plate 88, not shown in more detail, which engages in a corresponding opening of the LED circuit board 130. In the housing base 11 of the lamp housing 10, corresponding projections 28 can be provided which allow insertion of corresponding centering pins but still do not prevent the planar support of the LED board 130 on the receiving region 25. Of course, such a positioning element can also be used in the cover 70 according to the first variant.

As already stated, the variants shown in fig. 12 to 14 represent a particularly preferred embodiment of the design of the cover 80 and the associated optical system for influencing the light output. Another advantage of the mechanical decoupling between the cover 80 and the optics 88 is also that the optics and the underlying LED circuit board 130 are less susceptible to impact and thus damage due to vibration, for example when transporting the lamp 1, can be avoided.

Of course, other variations are possible in the implementation of the

covers

70, 80. These variants relate, for example, to the construction of optical elements for influencing the light, in which case, for example, other light-refracting or light-scattering elements or structures can also be used as a substitute for the illustrated lens 90. In particular, suitable prism structures or lenses which may also be arranged on the underside of the cover, i.e. on the light-emitting surface, or which are constructed in another way are also conceivable here. Furthermore, additional films may be inserted if desired in order to influence the light output in a desired manner. In principle, the optical device may comprise optical materials such as scattering particles or conversion particles, optical structures such as roughened surfaces and/or optical elements such as lenses or lens arrays.

The choice of material may also be adapted to the desired light output, in which case it would also be particularly conceivable to choose a material that influences the hue or color temperature of the emitted light. In a second variant, there is also the possibility of making the cover 80 and the optics 88 of different materials. In this case, in particular for the cover 80, a material can then be selected which is particularly chemically resistant, while the optics 88 are made of a material which can influence the light in a particularly suitable manner.

Finally, it is also conceivable to design the cover element 100 and/or the

covers

70, 80 such that they are an integral part of the holding element 50. In particular, in the case of the provision of a further separate lens plate 88 for influencing the light, as in the variant of fig. 12 to 14, the advantage can be achieved anyway that, on the one hand, the receiving space B or the chamber for the LED lighting device 130 is permanently closed in a sealed manner, and, on the other hand, the lens 90 is correctly positioned with respect to the LED.

With regard to the materials for the holding element 50 and the cover element 100, it should be noted that these may be made of different suitable materials depending on the area of use of the lamp 1. Thus, the retaining element 50 can be made of plastic or another material, in particular aluminum or metal sheet, depending on the chemical resistance it should have. The same applies to the cover element 100, whereby it is noted that all components can be combined with other components made of different materials in any combination. This provides the greatest possible flexibility in the final choice of materials, so that the lamp can be optimally adapted to the needs of the consumer by choosing appropriate components, depending on the light emission characteristics that the lamp should have and how well protection from external influences and heat dissipation should be achieved.

Another function of the holding element 50 and the cover element 100 fastened thereto is to enable cooling air to flow through the through-openings 30 of the lamp housing 10. For this purpose, the retaining element 50 initially comprises an opening 60 corresponding to the through opening 30 of the housing 10. The same applies to the cover element 100, whereby the opening 120 here is additionally correspondingly surrounded by a peripheral web 121. These webs 121 are oriented substantially transversely to the part of the cover element 100 comprising them, but in this case are slightly inclined and aligned on their upper side with the through-opening 30 of the lamp housing 10 and the through-opening 60 of the holding element 50, so that cooling air channels are formed which widen slightly downwards and, as already stated, are configured on both sides of the receiving region 20 for the operating device.

The web 121 may laterally delimit the through opening 30 of the lamp housing 10 on the inside or the outside and in a preferred construction adjoins the through opening. Suitable splash protection can thus be provided so that no water can splash into the space between the holding element 50 and the

cover

70 or 80, which would be particularly disadvantageous in the region of the seal 40. However, in order to be able to drain the incoming water, suitable holes can be provided in the holding element 50 or the cover element 100, through which holes, for example, water can drain from the delimited space.

The hot through openings 30 may likewise be curved circumferentially inwardly or downwardly, as can be seen in fig. 4 or 15. Thus, the edges of the heat through openings 30, which are bent in particular towards the holding element 50, may form, together with the above-mentioned webs 121 of the holding element 50, cooling air discharge channels, which are preferably continuous and closed at the edges. In cross section, this channel is then implemented such that it initially tapers from the bottom to about half its height, and then widens again, as can be seen in the sectional view of fig. 15.

The channels formed in the above-described manner thus allow cooling air to flow through on the one hand, but also liquid to flow away on the other hand. As already stated, the rear side of the lamp housing 10 is embodied in such a way that no large amounts of liquid can accumulate there, since the liquid flows away laterally above the housing wall 12 or is discharged downward through the channel. Here, a corresponding funnel-like configuration of the channels is also advantageous, since the channels initially taper towards the lower side and the risk that liquid discharged downwards will laterally enter the sealing areas between the various components of the lamp 1 is thus reduced.

Another special feature of the lamp housing 10 is the cooperation of the mentioned cooling air channels with the surface of the lamp housing 10 designed in the manner according to the invention. This is because the shape visible in the figure is such that air flowing from bottom to top (as in the illustration of fig. 15) along the outside of the housing 10 flows first along the rear side of the housing 10 in the direction of the central area. Here, the air will encounter air flowing vertically upwards through the cooling air passage, which has a relatively high velocity due to the configuration of the passage and the resulting so-called venturi effect. Finally, this results in an outwardly directed air vortex being generated above the lamp housing 10 on both sides of the central receiving region 20 for the operating device. This not only ensures a particularly efficient dissipation of heat to the ambient air, but also helps to prevent dust or dirt particles from accumulating on the surface of the lamp housing 10. Thus, any necessary cleaning cycle of the lamp 1 can be lengthened or lengthened, which is advantageous in case the lamp 1 is not generally accessible for its purpose of use and the resulting installation.

Finally, the aforementioned suspension bracket 150 will be explained in more detail, or it will be shown to the advantage that the lamp housing 10 is designed so as to be able to simply mount or suspend the lamp 1.

The bracket 150 shown separately in fig. 17 has the shape of a wide opening angle V, thereby providing a short central area 151, said bracket comprising inclined arms 152 extending on both sides. These arms 152 and the central area 151 comprise various through holes or

openings

153, 154 which enable fastening of different suspension elements. By way of example only, it should be mentioned that an opening 153, e.g. centrally arranged on the central region 151, may be used for anchoring a simple suspension line thereto. On the other hand, symmetrically configured side arms 152 can be used to hook in corresponding hooks or other hanging hooks, which then converge in a Y-shape on a not depicted chain for hanging the lamp 1. Thus, if openings 154 on lateral arms 152 of suspension bracket 150 are used, lamp 1 can be coupled to the respective suspension lines at four joints, which ultimately makes lamp 1 somewhat more stable to mount.

A special feature of the solution shown is also that the suspension bracket 150 can be connected to the lamp housing 10 without tools. For this purpose, the lateral arms 152 have curved hooks 155 at their end regions, whereby each end region comprises two separate hooks 155.

For this purpose, four fastening regions 17 are distributed on the rear side of the lamp housing 10, whereby two fastening regions 17 are respectively configured on oppositely disposed regions of the housing base 11, each of which is arranged symmetrically with respect to the longitudinal axis of the housing 10 or on both sides of the central receiving space B. In the illustrated design example of fig. 16, a corresponding web 15, which is provided at each fastening region 17 but is spaced apart on its underside from the housing surface so that a through-opening is formed which constitutes an integrally formed suspension lug 16 of the housing 10 in which a hook 155 of the fastening bracket 150 can engage, bridges a total of three cooling fins 14. This measure is also advantageous because the coupling of the fastening bracket 150 to the housing 10 does not lead to such an opening in the housing 10: the opening opens into a sealed region inside the lamp and must therefore be additionally sealed. Instead, the rear side of the housing 10 also remains completely closed here.

The brackets 150 themselves have a degree of flexibility such that they can be coupled to the housing 10 without tools. This can be achieved in particular by first hooking the hooks 155 of the wings 152 of the carrier 150 into the corresponding lugs 16 on the casing 10. The brackets 150 can be spread apart by applying pressure on them, so that in the next step the opposite hooks 150 can also snap onto the corresponding webs 15 on the rear side of the housing. This enables the fastening bracket 150 to be hung in a simple manner.

In order to ensure that the carrier 150 can be independently withdrawn from the anchor by inadvertent application of pressure or other effects, screws 160 are provided as an additional securing measure, which screws are screwed into corresponding openings on the lateral wings 152 of the carrier 150. However, these screws 160 only cooperate with the carrier 150 itself and, as can be seen in fig. 15, project to such an extent that they prevent lateral migration of the end regions of the carrier 150. On the other hand, no cooperation with the housing 10 is provided, which again may require an undesirable opening in the housing 10 itself. Thus, screw 160 serves only to block lateral migration of retaining bracket 150. Accordingly, other blocking elements, such as pins, bolts, etc., that similarly prevent migration of the bracket 150 may also be provided as an alternative to the illustrated screw 10.

The described measures therefore contribute overall to producing a lamp capable of generating and emitting high-intensity light as required, while achieving even better protection of the housing and the components it houses than in previously known solutions.

A further advantage of the lamp according to the invention, which is emphasized in this connection, is that the mounting of all relevant parts of the lamp takes place from one direction, i.e. from the lower side or light-emitting side of the housing. This applies to the arrangement of the seal and the installation of the lighting device, the operating components for operating the lighting device and any connecting leads for supplying power to the lighting device. In principle, all these components are introduced into the lamp housing from the same direction, without additional work being performed from behind. This is advantageous because it is not necessary to turn the housing during the mounting of the lamp, which opens up the possibility of largely or even completely automating the mounting process. The lamp according to the invention is therefore characterized not only by its advantageous properties already described with respect to light emission properties, heat dissipation and resistance to external influences, but also by the advantage that the mounting of the lamp can be performed relatively easily.

The concept according to the invention can also be easily extended to other forms or sizes of lamps. In particular, there is the possibility of enlarging the number of chambers or spaces for accommodating the operating device or the lighting device as required. One possibility is, for example, to realize a housing which comprises a total of four receiving regions for the lighting device and two optionally interconnected receiving regions for the operating device. Finally, this is substantially equivalent to doubling the concept according to the invention shown in the figures, wherein the only requirement is to provide the entire housing in an elongated shape. All further components can then be used in the manner described above, irrespective of the number of receiving areas used. Thus, in the described example, two identically constructed holding elements are used which comprise the corresponding optical cover and cover element, which are then arranged one behind the other in the longitudinal direction.

Claims

1. A trough-shaped lamp housing (10) comprising:

a housing base (11) and

a housing wall (12) which laterally surrounds the housing base (11) and delimits a lamp space together with the housing base (11),

wherein the housing base (11) comprises at least one flat area (25) for receiving at least one lamp component, preferably in a planar manner,

and wherein substantially all surface areas of the lamp housing (10) forming the outer surface of the lamp housing (10) are designed such that, in the mounted state of a lamp (1) using the lamp housing (10), they allow liquid to flow away over the outside of the housing wall (12) and/or through openings (30) configured in the lamp housing (10).

2. The lamp housing according to claim 1,

it is characterized in that the preparation method is characterized in that,

in addition to the flat receiving region (25), the housing base (11) comprises a further region (20) for receiving the lamp components, wherein at least one, preferably a plurality of elongated openings (30) arranged one behind the other are formed between the two regions (20, 25).

3. The lamp housing according to claim 2, wherein,

it is characterized in that

The further region (25) forms an accommodation space (A) which projects rearwards beyond the plane of the flat accommodation region (20).

4. Lamp housing according to one of the preceding claims,

it is characterized in that

One or more regions (20, 25) for receiving lamp components are each surrounded by an annular channel (36) configured to receive a seal (40).

5. The lamp housing according to claim 4,

it is characterized in that

One or more channels (36) extend in a common plane.

6. The lamp housing according to claim 2 and any one of claims 3 to 5,

it is characterized in that

A connecting channel (24) which connects the two receiving regions (20, 25) to one another without interrupting the annular channel (36), the connecting channel being formed on the housing (10).

7. Lamp housing according to one of the preceding claims,

it is characterized in that

Cooling fins (14) are formed on the rear side of the housing (10).

8. Lamp housing according to one of the preceding claims,

it is characterized in that

The outer surface of the housing (10) forming the rear side of the housing (10) in the mounted state of the lamp (1) using the lamp housing (10) is inclined and/or arched.

9. Lamp housing according to one of the preceding claims,

it is characterized in that

The housing is a cast part, in particular an aluminium die-cast part.

10. Lamp housing according to one of the preceding claims,

it is characterized in that

At the rear side of the housing base (11), a suspension lug (16) is provided which is formed integrally with the housing (10) and which enables suspension elements (150) to be suspended.

11. The lamp housing of claim 10,

it is characterized in that

A plurality of fastening areas (17) are configured to be distributed on the rear side of the housing base (11), each of the fastening areas comprising at least one suspension lug (16).

12. Lamp comprising a lamp housing (10) according to any one of the preceding claims and a lighting device (130) accommodated in a planar manner on the flat area (25).

13. The lamp of claim 12, wherein said lamp is,

it is characterized in that

The flat region (25) is circumferentially closed by a seal (40),

wherein the lamp (1) further comprises:

-a cover (70, 80) spanning the area (25) and abutting against the seal (40) in a circumferentially closed manner to form a closed space (B) with the lamp housing (10), wherein the cover (70, 80) comprises optics for influencing the light of the lighting device (130), and

-a frame-like holding element (50), wherein the holding element (50) is connected to the lamp housing (1) such that it presses the cover (70, 80) into contact with the seal (40).

14. Lamp according to claim 13 and having the features of claim 2,

it is characterized in that

The lamp (1) further comprises a cover element (100) which spans the further receiving region (20) and can be fastened, in particular screwed, to the holding element (50).

15. The lamp of claim 14, wherein said lamp is,

it is characterized in that

The cover element (100) can be released from or fastened to the retaining element (50) when the retaining element is fastened to the housing (10).