EP3366991B1 - Apparatus holder for luminaire - Google Patents

Description

FIELD OF THE INVENTION The present invention relates to a device mount for a lamp, which is intended to carry both lighting units and operating devices provided for powering the lighting units. Furthermore, the present invention relates to a so-called light engine for use in a lamp.

The light engine usually refers to that structural unit of a lamp which is responsible for generating the light emitted by the lamp. This structural unit therefore contains in particular the lighting means required for the actual generation of light, but possibly also additional components which are responsible for the power supply of the lighting means. Furthermore, a so-called primary optics is often assigned to the lighting means, which carries out a first influencing of the light generated by the lighting means.

While light bulbs or fluorescent lamps, for example, were previously used as light sources and could easily be replaced by the consumer in the event of a defect, light sources based on semiconductors have now become established in lighting technology. In this case, the light sources are then often formed by LED circuit boards, in which one or more LEDs are positioned on a plate-shaped carrier, the circuit board. Compared to the classic light sources mentioned above, however, it is usually not easy to replace individual LED circuit boards, which is why the LED circuit boards are usually positioned on a so-called device carrier, which is then installed with the circuit boards as a structural unit in a lamp is arranged. For safety reasons, it is often desirable that the end user does not have access to the LED boards in order to avoid accidentally touching the LEDs or the current-carrying lines of the LED boards.

Since LEDs cannot usually be supplied directly with the supply voltage provided by the general power supply network, an operating device is usually required to operate such lamps, which converts the supply voltage externally supplied to the luminaire into a suitable operating voltage for the LEDs. This control gear can be purchased separately Lamps are positioned inside the lamp and then connected to the lamps via a flexible cable connection. However, to simplify the assembly of the luminaire and any maintenance measures carried out later, it would be advantageous if there was a structural unit comprising the illuminants and the operating device, which could be arranged in the luminaire and replaced in a single assembly step. This means that ideally the control gear should also be positioned on the device mount. However, it must be taken into account that both components, i.e. the light source on the one hand and the control gear on the other, generate heat during operation of the luminaire, but excessive thermal stress on the LEDs and the control gear should be avoided.

In the prior art, lighting components are used which both hold LED light sources and are also used as carriers for an operating device, these components being stored in such a way that they are thermally decoupled from one another as far as possible. Such so-called device carriers, some of which have very complex shapes and are designed as extruded profiles, are for example in the EP 2 711 750 A1 , the US 2011/0090682 A1 or the KR 101 321 439 B1 shown. Also the U.S. 2016/0102814 A1 shows such a lighting component as a carrier of LED light sources and an operating device, the component being designed somewhat more simply in terms of its shape, but the compactness of the arrangement is restricted in this case. The document DE 20 2016 000122 U1 shows a light output unit with a device carrier according to the preamble of claim 1.

The present invention is based on the object of providing a light-emitting unit for a lamp, the light-emitting unit having a device mount which is suitable both for holding the lamps and at least one operating device for the lamps, but in which a mutual negative thermal Impairment of these components is avoided. Furthermore, the arrangement of the two components on the equipment carrier should not lead to an increased space requirement and the production of the equipment carrier should take place with little effort.

The object is achieved by a device mount for a lamp, which has the features of claim 1. Advantageous developments of the invention are the subject matter of the dependent claims.

The light emission unit according to the invention for a lamp has a device mount and at least one LED circuit board and at least one operating device Power supply of at least one LED board. The device carrier according to the invention is formed by a sheet metal part which has at least one plate-shaped area. According to the invention, this is used to position the components responsible for generating light on both sides of the equipment carrier. This means that the at least one LED circuit board is arranged on one side of the device mount or the plate-shaped area, and the directly opposite side is used to position the at least one operating device. In this case, however, it is provided according to the invention that at least not both types of components, ie the LED circuit board and the operating device, lie flat on the plate-shaped area of the device mount. Instead, the plate-shaped area has integrally formed spacers formed by embossing of the plate-shaped area, which protrude from the plane of the plate-shaped area in at least one of the two mounting areas and form raised support surfaces for the LED circuit board or the operating device.

According to the invention, a light emission unit for a lamp is therefore proposed which has a device mount, at least one LED circuit board and at least one operating device for powering the at least one LED circuit board. According to the invention, the equipment carrier is formed by a sheet metal part which has a plate-shaped area, through which two opposite mounting areas are formed, with the LED circuit board being arranged in a first of the two mounting areas and with the second mounting area, which is next to the first Mounting area is opposite, which is arranged at least one operating device. According to the invention, the plate-shaped area has integrally formed spacers formed by embossing of the plate-shaped area, which protrude from the plane of the plate-shaped area into one of the two mounting areas and form raised support surfaces for the LED circuit board or the operating device.

The fact that the LED circuit board or the lamp units or the operating device are positioned at a certain distance from the plane of the plate-shaped area using the spacers according to the invention first of all makes it easier to attach the components to the device mount. In particular, screwing the operating device to the device mount, for example, no longer means that the screws protruding through the plane of the plate-shaped area prevent or impair an arrangement of the lighting units. Instead, lighting units and operating devices can actually now be directly opposite one another be arranged on both sides of the device carrier without this leading to difficulties in terms of the arrangement of the fastening means. As a result, the space required for the equipment carrier or the light engine can be reduced. A further decisive advantage, however, consists in the fact that the lamp units and the operating device are always at a certain distance from one another as a result of the design according to the invention, and the risk of undesired heat transfer is correspondingly reduced. Even without additional cooling measures, the two components can therefore be arranged relatively close to one another without the risk of overheating during operation. With the help of the solution according to the invention, a very compact structural unit can be created which contains all the components responsible for generating light in a lamp and can be installed in a lamp in a few assembly steps.

As already mentioned, the spacers are formed integrally in the plate-shaped area of the equipment carrier. According to the invention, this is achieved in that the spacers are formed by embossing. It can be provided in particular that the spacers are curved in two mutually perpendicular directions. This leads to a very stable configuration of the spacers, so that the components arranged on them, for example the lighting units, can be stored in a defined manner.

The spacers are preferably designed approximately in the shape of a truncated cone and can have openings for fastening means, in particular in the region of their bearing surfaces. This can involve, for example, simple bores or the like, which enable the component to be fastened to be screwed to the equipment carrier. In order to ensure a planar, defined mounting of the component to be fastened, the spacers are preferably arranged offset to one another along a longitudinal direction.

In the case of the device mount according to the invention, it is therefore provided that the lamp units and operating device are arranged on opposite sides of the device mount, specifically directly opposite one another. A corresponding cable connection must therefore be routed from one side of the device mount to the other in order to supply power to the lamp units via the control gear. For this purpose, according to a preferred exemplary embodiment, it can be provided that the plate-shaped area has at least one recess, through which the cables can be guided from one side to the other is made possible. With a suitable positioning of the lamp units in relation to the equipment carrier, it can be ensured that there is no risk of damage to the cable sheathing on the edges of the sheet metal part. In particular, it can be provided that the illuminant unit protrudes slightly into the area of the recess, so that the cable routed around the plate-shaped area does not rest against the edges of the equipment carrier.

Depending on the luminaire in which the device mount according to the invention is to be used, it may be desirable for light to be emitted not only into the spatial area towards which the lamp units are facing, but also into the opposite area, for example in order to achieve so-called indirect lighting or to brighten up the luminaire housing in the form of accent lighting. It is often provided that, for this purpose, additional lighting units are arranged on the side of the equipment carrier opposite the actual lighting units, which bring about this supplementary light output.

According to a preferred embodiment of the invention, however, it can be provided that this secondary light emission is also effected by the existing light source units, which is made possible by the plate-shaped area having openings which allow light to pass through from the first assembly area in which the light source units are located , allow in the second assembly area. As a rule, at least part of the light that is generated by the lamp units is reflected by parts or other components of the lamp and falls back on the device mount. At least part of this light can then enter the opposite area through the openings and then cause the secondary light output mentioned above. However, in order to be able to use the light emitted by the lamps as efficiently as possible overall, it is preferably provided that the device mount itself consists of a reflective material or has a reflective coating or the like.

A simple attachment of the device mount according to the invention to a lamp housing is preferably made possible by the fact that it has profiled sections which extend on two sides of the plate-shaped area and which enable attachment in a lamp housing.

Provision is preferably made for the LED circuit board to be positioned on the spacers. Provision can furthermore be made for the light-emitting unit to have an optical element which is fastened to the equipment carrier, in particular latched to it, and spans the LED circuit board in the manner of a dome. Provision can preferably be made here for the optical element to be subdivided into segments in a longitudinal direction.

According to the invention, a lamp, in particular a moisture-proof lamp, is also proposed which has a housing and a light-emitting unit arranged in the housing in accordance with the type described above.

Figuren 1 und 2

Ansichten einer sogenannten Feuchtraumleuchte, bei der ein erfindungsgemäßer Geräteträger zum Einsatz kommt;

Figur 3

eine Stirnansicht der Feuchtraumleuchte;

Figur 4

eine Schnittdarstellung der Feuchtraumleuchte;

Figuren 5 und 6

Ansichten einer für die Lichtabgabe verantwortlichen Abdeckung der Feuchtraumleuchte;

Figur 7

eine vergrößerte Ansicht des Stirnbereichs der Abdeckung;

Figuren 8 und 9

Ansichten der für die Befestigung der Abdeckung an der Leuchtenwanne verantwortlichen Rastbereiche;

Figuren 10 und 11

Ansichten der Leuchtenwanne der Feuchtraumleuchte;

Figur 12

eine vergrößerte Ansicht des Endbereichs der Leuchtenwanne;

Figur 13

den für die Verrastung mit der Abdeckung verantwortlichen Bereich der Leuchtenwanne;

Figur 14

eine Schnittdarstellung der mit der Leuchtenwanne verrasteten Abdeckung;

Figur 15

die Befestigung eines zusätzlichen Kabelhalters an der Leuchtenwanne;

Figur 16

den Kabelhalter in isolierter Ansicht;

Figur 17

einen Endbereich der Leuchtenwanne;

Figur 18

die Ansicht eines speziellen Werkzeugelements zum Erzeugen eines Warnsymbols auf der Außenseite der Leuchtenwanne;

Figur 19

eine Schnittdarstellung des mit der Leuchtenwanne verrasteten Geräteträgers;

Figuren 20 und 21

Ansichten des Geräteträgers;

Figuren 22 bis 25

Ansichten des Geräteträgers mit den darauf befestigten Komponenten für die Lichterzeugung;

Figuren 26 bis 28

Ansichten einer an dem Geräteträger zu befestigenden Primäroptik und

Figur 29

die Baueinheit bestehend aus dem Geräteträger sowie der an dem Geräteträger befestigten Primäroptik.

The invention will be explained in more detail below with reference to the accompanying drawings. Show it:

Figures 1 and 2

Views of a so-called moisture-proof light, in which a device mount according to the invention is used;

figure 3

a front view of the moisture-proof light;

figure 4

a sectional view of the moisture-proof light;

Figures 5 and 6

Views of a cover of the moisture-proof luminaire responsible for light emission;

figure 7

an enlarged view of the front area of the cover;

Figures 8 and 9

Views of the locking areas responsible for attaching the cover to the lamp tray;

Figures 10 and 11

Views of the light housing of the moisture-proof light;

figure 12

an enlarged view of the end portion of the lamp tray;

figure 13

the area of the lamp tray that is responsible for locking with the cover;

figure 14

a sectional view of the latched with the lamp tray cover;

figure 15

the attachment of an additional cable holder to the lamp tray;

figure 16

the cable holder in isolated view;

figure 17

an end portion of the lamp tray;

figure 18

the view of a special tool element for generating a warning symbol on the outside of the lamp tray;

figure 19

a sectional view of the gear tray latched to the lamp tray;

Figures 20 and 21

views of the equipment carrier;

Figures 22 to 25

Views of the device carrier with the components for light generation attached to it;

Figures 26 to 28

Views of a primary optics to be attached to the equipment carrier and

figure 29

the structural unit consisting of the device carrier and the primary optics attached to the device carrier.

A so-called moisture-proof light is described below as an area of application for the device mount according to the invention. However, the concept according to the invention is not limited to such types of lights or to the shape of the light shown. For example, as an alternative to the elongated embodiment described below, the equipment carrier could also have a flat design.

In the Figures 1 and 2 Firstly, two perspective views of a moisture-proof light are shown which is generally provided with the reference number 1 and which is therefore intended in particular for use in areas in which, among other things, there may also be increased humidity. The lamp 1 should therefore be designed in particular in such a way that the ingress of dust and/or moisture into the interior of the lamp 1 is avoided. Due to the sealing measures described in more detail below, the luminaire 1 should then meet the requirements of protection class IP65, ideally class IP66.

Essential components of the lamp 1 are a so-called lamp tray 50, a cover 20 and a hereinafter described in more detail, in the Figures 1 and 2 unrecognizable device carrier, which is arranged in the space enclosed by the lamp housing 50 and the cover 20 and carries the components responsible for generating light. The lamp housing is thus formed by the components to be connected to the lamp housing 50 and cover 20. These enclose an elongated receiving space for the other components of the lamp 1.

It is provided that the cover 20 and the lamp housing 50 are made of the same material. This represents a first special feature compared to previously known solutions, since due to the different requirements it was previously intended to form the lamp trough from a first material and to form the cover responsible for the light emission from a second material. As a rule, materials were used for the lamp housing, which in particular made it possible to seal the interior of the lamp against external influences. The cover, in turn, was made from a material that satisfied the optical requirements in terms of light emission.

In the present case, however, it is now provided that the lamp trough 50 and cover 20 are made of the same type of material, it being possible, for example, according to a first preferred embodiment that polycarbonate (PC) is used for both components. This plastic material can be both opaque and opal, in which case an opaque material is preferably selected for the trough 50, while the cover 20 is opal. This means that in this case the cover 20 has at least slightly light-scattering properties, which leads to a homogeneous, even light emission.

According to another advantageous variant, it can be provided that both the lamp trough 50 and the cover 20 are made of polymethyl methacrylate (PMMA). This is a material that can be made crystal clear. This choice of material means that light can not only escape through the cover 20, but also through the trough 50, which is also translucent. This can be used to brighten the housing of the lamp 1 overall or to indirect light emission via the trough 50 achieve.

In both variants, however, as already mentioned, the lamp housing 50 and cover 20 are made of the same materials, which has the advantage, among other things, that both housing components 20, 50 expand or contract in the same way in the event of temperature fluctuations. As a result, temperature fluctuations cannot have a negative impact on the sealing measures described in more detail below. As a result, the sealing of the lamp 1 against external influences is additionally improved.

Another special feature of the lamp 1 is that, apart from the sealing material described below, the interior of the lamp is sealed against external influences exclusively by the two housing components (trough 50 and cover 20) and both housing components 20, 50 are designed in such a way that they can be additional tools can be connected to each other. Ideally, the cover 20 and the lamp trough 50 consist entirely of a single material (such as polycarbonate or polymethyl methacrylate) without additional, more flexible materials being used in the connection area, as is the case with many known solutions. This leads to simplified production of both housing parts 20, 50, since these can be produced in a simple manner using the injection molding process, as described below. On the other hand, the omission of additional connection and sealing measures requires a special interaction of the two housing components 20, 50 in the connection area in order to achieve the desired connection and seal.

In this context, the configuration of the cover 20 with the measures provided thereon for connection to the lamp trough 50 will first be described in detail below. This should be based in particular on the Figures 5 to 9 take place.

the Figures 5 and 6 first show the complete lamp cover 20 in a perspective view, on the one hand from the inside ( figure 5 ) and on the other hand from the outside ( figure 6 ). The cover 20 here has an elongated, dome-shaped shape and is designed to be smooth on its outer surfaces. Cleaning of the surfaces of the lamp 1 primarily responsible for the emission of light is thereby made significantly easier. The risk of dirt particles accumulating on the surface of the lamp 1 is also reduced.

On the inside of the dome shape, on the other hand, the cover 20 is provided with light-refracting structures over its essentially entire surface, in the illustrated embodiment with ribs 24 running in the longitudinal direction. These can have, for example, a prism-like shape that is triangular in cross section, in order to influence the light emitted via the cover 20 in the desired manner in the transverse direction. However, other prism structures (e.g. matrix-like) could also be used here. However, it should be noted that these light-refracting structures 24 are only optically effective if the material of the cover 20 has no or at least only low light-scattering properties. This means that these structures 24 primarily come into play in the variant in which the cover 20 is formed from PMMA.

The shape of the cover 20 is selected in such a way that it is approximately trapezoidal both in a section perpendicular to the longitudinal direction and perpendicular thereto. In this case, however, the bottom surface 21 transitions into the regions of the side walls 22 and the end faces 23 in a curved manner. This shape leads to increased mechanical stability of the cover 20, avoids sharp edges on the outside of the cover 20, which could adversely affect the light emission, and in turn facilitates cleaning of the surfaces responsible for the light emission. The bottom surface 21 can here as the representations of Figures 3 and 4 be removed can be slightly concave, whereby the light output can also be influenced in the desired way.

The responsible for the locking of the cover 20 with the lamp housing 50 and for sealing the lamp housing components can in particular Figures 7 to 9 be removed.

It can first be seen that the outwardly sloping side walls 22 and end faces 23 of the cover 20 merge into a circumferential web 26, which is aligned approximately perpendicular to the plane of the bottom surface 21 and is intended to engage in a sealing channel of the lamp housing 50, which is described in more detail below. This web 26, which extends uninterruptedly over the entire circumference, is then intended to ensure the actual sealing of the lamp interior in cooperation with a sealing material accommodated in the sealing channel.

In addition, however, the cover 20 also has a splash guard edge 25 that protrudes outwards at a right angle from the upper edge of the sealing web 26 and that, in particular, figure 7 is recognizable. In the assembled state of the lamp housing, this covers the sealing channel of the lamp trough 50 and thus prevents any influence of spray water or the like acting directly on the sealing area. The risk of a dynamic pressure acting on the seal is thus avoided. This is an additional protective measure that does not prevent the fundamental penetration of moisture into the interior of the lamp (this is to be achieved through the interaction of the seal and sealing web 26), but through which additional protection of the lamp 1 is achieved.

This splash guard edge 25 preferably also extends over the entire outer circumference of the cover 20, but is interrupted at individual points. These are the points at which the latching areas 30, which enable the cover 20 to be latched to the lamp tray 50 without the use of tools, are provided. Several of these locking areas 30 are provided evenly distributed over the circumference of the cover 20, with a single locking area in the Figures 8 and 9 is shown enlarged.

The latching area 30 has in particular a web-like latching projection 31 which is provided on the outer circumference of the sealing web 26 and which is supported on its underside by two trapezoidal supporting webs 32 . This latching projection 31 with the supporting webs 32 should then engage in a corresponding latching recess in the lamp trough 50 . However, in order to enable the latching between the cover 20 and the lamp housing 50 to be released again at a later point in time, a rectangular opening 28 is provided above the latching projection 31 in the splash guard edge 25, via which access to the latching projection 31 is made possible. Here, therefore, there is an interruption in the splash guard edge 25, which enables the latching between the cover 20 and the lamp tray 50 to be released later.

At the same time, however, there is of course the risk of water penetrating into the sealing area of the lamp housing through this interruption in the splash guard edge 25 . To prevent this, two additional, vertically running webs 29 provided, which extend from the end regions of the opening 28 down to the locking projection 31. These webs 29, which have a smaller depth than the latching projection 31, are in the latched state of the lamp housing on both sides of the latching recess described in more detail below on the wall of the lamp trough 50, so that splashed water can penetrate into the area above the latching projection 31, here, however, will not penetrate further into the connection area, since this area is completely surrounded by the corresponding wall of the housing trough and by the webs 29 and the locking projection 31. The webs 29 and the latching projection 31 accordingly bridge the opening 28 splash guard edge, so that overall a completely circumferential splash guard in the area of the connection between the cover 20 and the tub 50 is achieved.

Furthermore, a further web 27 is provided on the inside of the sealing edge 26 on both sides of the latching areas 30 . These additional webs 27 support the interaction of the latching areas 30 of the cover 20 with corresponding latching means of the trough 50, which will be explained in more detail below.

It should also be mentioned that the peripheral splash guard edge 25 also serves as a stacking aid in addition to its actual function of protection against splash water, as described above. This means that several lamp covers 20 of the type shown can be stacked on top of one another in a simple manner, with a cover 20 then resting with the lower edge of the sealing web 26 on the splash guard edge 25 of the cover 20 arranged underneath. This makes it easier to store and transport the cover 20. Furthermore, the shape of the cover is selected in such a way that, as already mentioned, it can be produced in a simple manner using injection molding.

The design of the lamp tray 50 can Figures 10 to 17 and 19 be taken, in which case the essential features for the sealing connection of the trough 50 to the cover 20 will first be explained below.

The lamp housing 50 initially has a pot or trough-like configuration and its dimensions essentially correspond to the dimensions of the cover 20. Cable feeds, which will be explained later, can be implemented on the bottom surface 51 and the end faces 53, via which the electronic components inside of lamp 1 can be connected to external power supply lines.

The two side walls 52 and the end walls 53 of the lamp housing 50 in this case include an opening facing the cover 20, in accordance with the enlarged representation of FIG figure 13 the lamp tray 50 is double-walled in this area of the opening. Strictly speaking, according to the sectional view figure 14 the side and end walls 52, 53 initially extended by a first web 62. Furthermore, the trough 50 is expanded laterally by a second, angled web 61 , this second outer web 61 then running essentially parallel to the inner web 62 , but protruding slightly beyond the latter. In this way, a sealing channel 60 completely encompassing the opening of the trough 50 is formed, the outer wall of which is formed by the web 61 and the inner wall of which is formed by the web 62 and which has a seal 63 in its bottom area. This seal is preferably foamed into the channel 60 after the trough 50 has been produced 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 the entire circumference and causes it to penetrate their attachment to the seal 63 that the interior of the lamp housing is protected from dust and / or moisture.

A reliable mounting of the cover 20 on the light trough 50 is achieved by latching areas 65, which are enlarged in the representation according to FIG figure 13 are recognizable. These latching areas 65 are formed in that the outer web 61 has a thickening 66 which faces the interior of the sealing channel 60 and has a latching depression or latching recess 67 . However, this recess 67 only penetrates the thickening 66, but not the entire outer web 61. The housing of the trough 50 is therefore also closed to the outside in this area.

The positioning of the latching areas 65 corresponds to the arrangement of the latching areas 30 of the cover 20 explained above. The angled support webs 32 provided on the underside of the latching projections 31 form a run-on slope which causes the outer web 61 to migrate laterally when the cover 20 is placed on the trough 50 . This makes it easier to join the trough 50 and the cover 20 together.

After the cover 20 has been inserted sufficiently into the sealing channel 60 with the sealing web 26, the latching projections 31 and webs 32 fully engage in the corresponding recesses 67 of the lamp housing 50 and the outer ridge 61 can migrate back to the original position. This ensures reliable and stable mounting between the cover 20 and the tray 50, with the dimensions of the components responsible for locking being selected, as already mentioned, such that the lower edge of the sealing web 26 of the cover 20 rests against the edge provided in the bottom area of the channel 60 Seal 63 passes and thereby the desired protection of the interior of the lamp housing is achieved.

How to continue based on figure 14 As can be seen, in this assembled state the peripheral splash guard edge 25 of the cover 20 then also rests on the end face of the outer web 61 in order to ensure the splash guard already explained in addition to the internal seal and to prevent larger particles from penetrating into the area of the seal avoid. Openings only exist through the recesses 28 of the splash guard edge 25 in the area of the individual latches. These openings are required in order to allow the latching between trough 50 and cover 20 to be released again at a later point in time. However, the corresponding spaces are then, as already mentioned, enclosed by the lateral webs 29 which bear against the outer web 61 of the trough 50 from the inside, and by the latching projection 31 . Liquid or dirt particles that enter this area cannot easily get into the sealing channel 60 .

This defined interaction between the latching areas 30 of the cover 20 and the latching 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 rest in the assembled state on the side of the inner web 62 of the tray 50 facing the channel 60. This means that the components of the cover 20 that are responsible for locking and sealing are held in a defined position in relation to the elements of the trough 50 that interact therewith by the additional support using the webs 27 .

The locking between the cover 20 and the lamp housing 50 is then released by inserting a tool, for example a slotted screwdriver, into the area of the locking via the opening 28 of the splash guard edge 25 . By turning this tool or screwdriver, the outer web 61 of the trough 50 can then be bent outwards locally, so that the latching projection 31 can leave the latching recess 67 . In this way, the latching between the cover 20 and the lamp housing 50 can be released again in a very simple and intuitive manner. As already mentioned, this is exclusive possible with the help of a corresponding tool, which is usually available at any time. The webs 29 and the latching projection 31 also prevent the tool from accidentally touching the seal 63 when it is inserted and possibly damaging it in the process.

Overall, a reliably sealing connection between the cover 20 and the lamp housing 50 can be achieved in this way in a simple manner, which, however, can also be released again without problems if necessary. It is - as in figure 13 recognizable - provided that the locking recess 67 opposite the inner web 62 has an opening or recess 68. Although this is not relevant for the later use of the lamp trough 50 and also for the interaction with the cover 20, it facilitates the production of the trough 50 in the injection molding process. The opening 68 corresponding to the recess 67 significantly facilitates demoulding of the lamp housing 50 after injection molding from the corresponding injection molding tool.

Other special properties of the lamp trough 50 relate to the options for supplying external power supply lines and measures that enable the arrangement of components for generating light within the lamp housing. These properties will be explained in more detail below.

With regard to the possibility of feeding in external power supply lines, several possibilities for forming a feed opening are provided on the lamp trough 50 . These are areas 54, 55 and 56, which are initially closed after the production of the trough 50, but—in the present case—have ring-shaped material weakenings that allow circular housing sections to be broken out or removed. In this way, feed openings can then be created through which cables can be routed into the interior of the lamp. These openings can then be sealed by appropriate additional measures such as grommets or the like.

A special feature of the lamp trough 50 shown is that the areas for forming feed openings are not provided exclusively in the end regions of the lamp trough 50, as is normally the case, but that central cable feed is also made possible. In the case of the trough 50 shown, corresponding areas 54 with weakened material are initially provided centrally in the bottom surface 51 of the trough 50 . In addition, are also additional areas 55 and 56 in the end areas of the bottom surface 51 and the end faces 53 are formed. Depending on the type of installation of the lamp or its area of application, the supply of an external power supply cable can be adjusted in a flexible manner.

Furthermore, two suspension channels 57 running parallel to one another are formed on the end regions of the bottom surface 51 . These enable the engagement of, for example, a clip connected to a suspension cable for suspending the lamp 1. Such brackets are already known and allow a cable suspension or pendulum suspension of a lamp 1 in a simple manner. In the present case, the length of the channels 57, in which the arms of the suspension bracket are then to engage, is dimensioned in such a way that there is a certain amount of play for the positioning of the suspension bracket remains. This also increases the flexibility with regard to the arrangement of the lamp 1 .

The suspension channels 57 just mentioned can also fulfill another function. Since the areas of the housing enclosing the channels 57 form linear surface sections, which in particular also protrude beyond the curved configuration of the further outside of the lamp housing 50, these areas can also be used as support or storage surfaces, via which in turn simple stacking of similar Light trays 50 is made possible. As explained in connection with the cover 20, this also leads to simplified storage and improved transport of the trough 50 to the place of final assembly of the lamp.

Other special features of the lamp tray 50 relate to the design of the interior. Here it can be seen in particular that ribs 70 , 80 are distributed along the inner walls of the two side surfaces 52 of the trough 50 . On the one hand, these serve to increase the stability of the trough 50, but in particular also the tool-free arrangement and attachment of further lamp components.

According to the illustrated embodiment, two different types of ribs are provided, which are designed differently. In the exemplary embodiment shown, two ribs of the first type 70 and four ribs of the second type 80 are provided on one side of the trough 50 . The ribs of the first type 70, which are positioned second and fifth in the longitudinal direction in the present case, will first be explained below. Of course it would however, it is also conceivable to vary the arrangement and the number of different types of ribs.

The shape of a rib of the first type 70 is particularly figure 12 as well as in figure 15 recognizable. This initially has a first lower section 71 which—due to the curved outer shape of the trough 50—has approximately the shape of a quarter ellipse and is provided with a vertical first flank 72 and a horizontal second flank 73 as shown. Separated from this first section 71, a further rib section 74 is formed above the horizontal flank 73, which is designed approximately in the shape of a right-angled triangle, although the hypotenuse is formed at an angle. 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 latching recess 75, which serves to hold the equipment carrier described in more detail below. At its end facing toward the center of the lamp trough 50, the horizontal edge 73 also has a slight elevation, by which the latching recess 75 is laterally delimited.

The lower rib section 71 also has an approximately triangular further latching recess 76 in the area of the vertical edge 72 . This allows according to the representation figure 15 the snapping of an in figure 16 individually illustrated cable holder 90. This holder 90 - made of plastic, for example - is basically designed approximately in the shape of a C with a central leg 91, which merges laterally into two inclined side legs 92, which at their outer end have an end region 93, which in turn runs parallel to the central leg 91 exhibit. A slot 94 is provided in each of these end areas, so that the end area 93 snapped into the recess 76 of the rib 70 encompasses the lower area of the rib 70 . This cross-like interlocking of the rib 70 and the wire holder 90 results in this in the figure 15 shown position is fixed. Since the wire holder 90 is designed symmetrically and interacts in the same way with the corresponding opposite rib 70 of the trough 50, it can easily be snapped into the lamp trough 50 in the arrangement shown. Feet 95 formed on the underside of the central area 91 here support the wire holder 90 on the bottom surface of the trough 50 . Correspondingly, cables can then be routed between this bottom surface and the wire holder 90, which are supported by a number of wire holders fixed in the trough 50 in such a way that they run along the bottom surface of the trough 50 and do not impair the further arrangement of additional components in the lamp housing.

In the configuration shown, the corresponding detents 76 for retaining the wire holder 90 are provided on the ribs of the first type 70 . Of course, corresponding latching recesses could also be provided additionally or alternatively in the ribs of the second type 80 described below. The number of wire holders 90 to be used can be increased as a result, which makes sense depending on the length of the lamp 1 .

The latching between the wire holder 90 and the lamp housing 50 can be released in a simple manner by pressing on the middle area 91 of the holder 90 or by pulling on this area. Due to the flexibility, the end areas 93 of the wire holder 90 are pulled slightly inwards, so that the latching with the corresponding rib 70 is released.

Provision is also made for the ribs of the first type 70 to have a feed-through opening 78 laterally offset from the latching recess 76 . If necessary, this can be used to feed through additional cables or lines if this is desired. It also applies here that such an opening 78 could optionally also be provided in the ribs of the second type 80 .

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

The upper end of this lower rib area 81 is provided with a triangular projection 83, which in turn - with the side wall of the trough 50 - a locking recess 84 is limited. In contrast to the latching recess 75 of the first rib 70 , however, the latching recess 84 here is not limited at the top, since the rib 80 is only continued here by a narrow web 85 .

Further ribs 88 are also provided on the front end areas of the lamp trough 50 . These ribs 88 facing the interior (see figure 11 ) extend only over the height of the inner web 62 of the sealing channel 60 and are perpendicular to the longitudinal sides of the trough 50 arranged ribs of the first and second type 70 and 80, respectively. Among other things, they also support stacking of several similar lamp trays 50.

The function of the previously explained ribs 70, 80 and 88 in connection with the attachment of the equipment carrier will be explained below. Before that, however, based on the Figures 17 and 18 another special feature of the lamp tray 50 is briefly described. On the outside, this has at least one in figure 17 recognizable warning symbol 250 with a flash 251 warning of voltage in the present case. In principle, of course, there are a wide variety of options for attaching this warning symbol 250 to the outside after the production of the lamp trough 50 . Appropriate embossing of this symbol 250 would be conceivable, for example, or of course gluing or printing on the lamp trough 50. In the present case, however, it is provided that the symbol is created simultaneously during the production of the trough 50 during injection molding.

For this purpose, a special slide used in the injection molding tool is provided, which in figure 18 is shown and provided with the reference numeral 300 . The fact is used here that the triangular symbol 250 shown with the lightning bolt 251 contained therein can be realized by using a tool area with surface areas 301, 302 and 303, which are offset in steps relative to one another. The second surface area 302 , which has the shape of the lightning bolt 251 and is slightly higher than the first area 301 , thus adjoins the first surface area 301 , which forms a first part of the inner area of the triangle. Finally, the triangle is completed by the surface area 303 , which in turn is designed to be higher than the second surface area 302 . This special design of the slide 300 means that the symbol 250 - with corresponding surface areas that are offset in a stepped manner - can be applied directly to the outside of the lamp trough 50 during the injection molding process. In this way, the goal can be achieved in a very simple and elegant way, to produce the lamp trough 50 exclusively by injection molding and to avoid subsequent additional work steps.

The third essential component of the moisture-proof light 1 is the device carrier 100 already mentioned, which is initially in the Figures 20 and 21 is shown. It is an elongated sheet metal part on which the components of the lamp 1 that are responsible for generating the light are to be mounted. A central, plate-shaped area 101 is elongate and slightly shorter than that actual length of the lamp 1. On both sides of the plate-shaped area 101, the equipment carrier 100 has profiled side legs 102, which are bent in a U-shape in their end areas 103.

The configuration of these profiles or the side limbs 102 can, for example, correspond to the illustration in figure 24 be removed. It enables it to be locked with the lamp tray 50, in which case the in figure 19 recognizable arrangement results. It can be seen how the end regions 103 of the side limbs 102 of the device carrier 100, which are bent in a U-shape, interact with the locking recesses 75 and 84 of the ribs 70 and 80, respectively. In particular, it can be seen that the second upper rib section 74 of the rib of the first type 70 forms a limit stop for the end regions 103 in a direction perpendicular to the plane of the opening of the housing trough 50 . The projections 83 of the ribs of the second type 80 in turn form a lateral boundary for the side limb 102. Both rib types 70, 80 thus fix the side limb 102 primarily in one direction, with both directions being essentially perpendicular to one another, so that the device carrier 100 is fixed overall in the desired position on the housing trough 50. The shape of the corresponding projections or ribs makes it easier to insert the end region 103, which is bent in a U-shape and thus has a certain flexibility, into the locking recesses 75, 84 of the ribs 70, 80, so that the device carrier 100 can be easily inserted into the housing trough 50 . However, this latching can also be released by hand if replacement or removal of the device carrier 100 is desired for maintenance work.

The device carrier 100 serves to hold both the illuminant units responsible for generating the light, in the present case several LED circuit boards 130 , and oppositely to position other components responsible for the power supply of the LED circuit boards 130 . These are corresponding operating devices 140, 141 and connection terminals 142, 143, which are then connected via cables (not shown) to the power supply lines routed into the interior of the luminaire or from the operating devices 140, 141 to the LED circuit boards 130.

Both the LED circuit boards 130 and the components 140 to 143 responsible for the power supply are thus held by the equipment carrier 100 , with the components being positioned on both sides of the plate-shaped area 101 . It is provided here that on the side of the plate-shaped area 101 on which the LED circuit boards 130 are arranged, spacers 110 are trained. These spacers 110 form increased contact surfaces for the LED boards 130, so that these - as for example in the Figures 24 and 25 recognizable - have a certain distance h to the surface of the plate-shaped area 101.

This illustrated spaced arrangement of the LED circuit boards 130 has several advantages.

On the one hand, there is only a very weak direct thermal coupling between the LED circuit boards 130 and the operating devices 140, 141. Both components--ie LED circuit boards 130 and operating devices 140, 141--generate heat during operation of the lamp 1, and if the thermal coupling is too great, there would be a risk that the heat would be transferred to the other component and ultimately too high , temperatures that are not suitable for operation are present, which could possibly lead to damage. The spaced arrangement using the spacers 110 now largely leads to a thermal decoupling between the components, so that this risk is avoided.

A further advantage is that fastening measures, for example for the LED circuit boards 130, do not impair the arrangement of the other components on the opposite side of the device mount 100. As in particular the representation of figure 25 can be removed, it is provided to screw the LED circuit boards 130 to the equipment carrier 100 . The spacers 110 each have bores or openings 112 in general on their upper, planar support area 111, which enable a screw 115 to be passed through. Without the spacers 110, this screw 115 would penetrate the plate-shaped area 101 of the equipment carrier 100 and protrude on the opposite side. Here it would then possibly hinder the arrangement of the operating devices 140, 141 or the like, which no longer poses a problem due to the use of the spacers 110 according to the invention. In the same way, the attachment of 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 circuit boards 130. The available area of the plate-shaped area 101 can therefore be used efficiently used to arrange components to generate light.

The spacers 110 are preferably an integral part of the equipment carrier 100. This is generally stamped and formed by a corresponding Formed sheet metal part, in which case the spacers 110 are also formed by stamping and embossing the corresponding area. As already mentioned, the spacers 110 are ideally designed in the manner of a truncated cone with a planar contact surface. They are also curved in two mutually perpendicular planes, which increases their stability, so that the LED circuit boards 130 are mounted reliably and stably. A stable mounting of the circuit boards 130 is also supported by the fact that the spacers 110, as in particular in figure 21 recognizable in the longitudinal direction of the device carrier 100 are positioned alternately offset from one another. A single circuit board 130 should rest on at least three spacers 110, as a result of which a defined bearing is achieved. The spacers 110 could, of course, also be provided alternatively or additionally on the opposite side of the device mount 100 and accordingly enable the operating devices 140 , 141 to be arranged at a distance from the plate-shaped area 101 .

As already mentioned, the circuit boards 130 are preferably fastened to the equipment carrier 100 by means of screws, the circuit board 130 being supported on at least three spacers 110 . It is preferably provided that the plate 130 - seen in the longitudinal direction - is fixed in the middle, is mounted on the two end areas with a certain amount of play. This can be realized, for example, by the circuit board 130 having a circular hole in the middle for screwing, while slots are provided in the front areas. In the same way, the sequence slot - hole - slot can also be provided for the openings 112 in the bearing surfaces 11 of the spacers 110 . This measure makes it possible to absorb different longitudinal expansions due to the different types of material, although the circuit board 130 is fundamentally positioned in the desired position with respect to the equipment carrier 100 due to the central fixation.

When installing the lamp 1, it is therefore provided that the equipment carrier 100 is first equipped with the components responsible for generating the light. It then results in the Figures 22 and 23 recognizable configuration, with wiring between the operating device 140 and the LED circuit board 130 still having to be carried out. Since both components are positioned on opposite sides of the device carrier 100, the connection cable must be routed over an edge area of the device carrier 100 from one side to the other side. For this purpose it is provided that - as in figure 21 recognizable - a recess 116 is formed in the front end region of the equipment carrier 100 . The operating device 140 with the LED circuit board 130 connecting - not shown in the figures - cable should be guided through this recess 116, the configuration of the Recess of a 116 or the arrangement of the LED circuit board 130 is selected in such a way that the circuit board 130 already protrudes with its front end area into the area of the recess 116 . This is intended to prevent the cable routed from one side of device mount 100 to the other side from directly contacting the peripheral region of recess 116 and damage to the insulation of the cable as a result of punching burrs or sharp edges occurring during manufacture of device mount 100 . Of course, the shape of the recess could also be chosen differently in order to achieve this purpose. In principle, however, it is desired that the cable does not come into contact with sharp edges of the equipment carrier 100 .

As already mentioned, the device carrier 100 is preferably produced as part of a stamping/embossing process, which takes place in one work process. This procedure has the advantage that the individual elements of the equipment carrier 100, ie the spacers 110, openings, latching openings and the like are aligned and positioned with respect to one another in a very precise manner. This opens up the possibility of equipping the device carrier 100 in an automated manner, e.g. with the aid of a robot, in which case any index openings provided, which define reference positions used for assembly, can be introduced into the device carrier 100 at the same time as the other elements during manufacture.

The appropriately equipped and wired device carrier 100 is then inserted into the housing trough 50 and latched or snapped in there in the manner described above with the aid of the ribs 70 and 80 . The front ribs 88 of the trough 50 form a centering or guiding aid, so that a correspondingly suitable positioning of the device mount 100 in the housing of the lamp 1 is facilitated.

As already mentioned at the outset, a special variant for the lamp housing provides that not only the cover 20 but also the housing trough 50 is designed to be translucent in order to achieve secondary light emission here. The light used for this should also come from the LEDs 131 of the LED circuit boards 130, so that it is necessary for light to pass into the area of the housing in which the operating devices 140, 141 are arranged. In the case shown, this is made possible by the fact that the plate-shaped area 101 has light passage openings 117 on both longitudinal sides. The oval in the present case (other shapes would of course be conceivable) running and preferably punched light passage openings 117 are here laterally to those areas in which the LED boards or the Operating devices 140, 141 are positioned and should not be covered by these components. Scattered light or light reflected on the inside of the cover 20 can then enter the area of the lamp housing facing away from the cover 20 via these light passage openings 117 and be emitted here via the translucent housing trough 50 . In order to increase the efficiency of the use of the light generated by the LED circuit boards 130, the equipment carrier 100 is preferably designed to be reflective. For this purpose, it can either consist of a reflective material or be coated or painted in a correspondingly reflective manner.

Finally, the equipment carrier 110 can also be used to hold a so-called primary optics, which is intended to influence the light generated by the LED circuit boards 130 before the light is actually emitted through the cover 20 of the lamp 1 . The use of a corresponding primary optics 150 in the Figures 26 to 29 is shown is particularly advantageous when a material is selected for the cover 20 of the lamp 1, which is not strongly light-scattering. Without the use of light-scattering primary optics, the LEDs 131 of the LED circuit boards 130 would then be recognizable as individual point light sources in this case, which is generally disadvantageous due to the desire for a uniform or homogeneous light output. The primary optics shown are therefore provided in particular for the case in which the cover 20 is made of PMMA, although it could of course also be used in the variant in which the cover 20 is made of PC.

In such a case is then provided in the Figures 26 to 29 to attach the primary optics 150 shown to the equipment carrier 100 . This primary optics 150 consists of a light-scattering material (for example PC), which initially causes a diffuse scattering of the light. The basic shape of the primary optics 150 corresponds approximately to that of the lamp cover 20. The primary optics 150 is also designed to be elongated and dome-like, so that it can overlap the LED circuit boards 130. On the front end regions of the primary optics 150, latching projections 155 are provided on both sides. These are located on webs 156 of the optics 150 that protrude downwards and are dimensioned in such a way that they engage in corresponding locking openings 120 of the equipment carrier 100 from the outside. These latching openings 120 are formed in the side limbs 102 of the equipment carrier 100 .

The webs 156 of the primary optics 150 thus laterally overlap the plate-shaped area 101 of the equipment carrier 100, so that the latching projections 155 can engage in the recesses 120 from the outside. Beyond the wider perimeter lies the primary optics on the surface of the plate-shaped area 101 of the device carrier 100 and in this way overlaps both the LED circuit boards 130 and the light passage openings 117. An undesired light emission that is not influenced by the primary optics 150 is prevented in this way. In this case, however, the peripheral shape of the primary optics 150 can be chosen such that a small, eg a corner area of the plate-shaped area 101 of the device mount 100 remains free, ie is not covered by the primary optics 150 . A status LED, for example, can then be positioned in this area, which signals the operating status of the lamp 1 . In order 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, ie is not scattered by the primary optics 150, which is ensured by the measure mentioned.

To release the latching between the device carrier 100 and the primary optics 150, the webs 156 only have to be bent out laterally, so that the latching projections 155 can leave the recesses 120. A structural unit consisting of device carrier 100 and primary optics 150 latched therewith is in figure 29 shown. This structural unit can then be used as a whole and thus in a simple manner in the manner described above in the lamp trough 50. The primary optics 150 is not located in the area of the U-shaped end areas 103 of the side limbs 102, so that the locking of the device mount 100 with the tray 50 is not impaired.

Finally, an advantageous special feature of the primary optics 150 in the exemplary embodiment shown is that, viewed in the longitudinal direction, it is divided into successive segments 159 by corresponding ribs 157 which form grooves 158 in the emission surface of the optics 150 from the outside. The light influenced by the primary optics 150 therefore consists of individual partial beams, which correspond to the respective segments 159 of the primary optics 150, before it is emitted through the actual cover 20 of the lamp 1.

In the case of a uniform emission of light over the entire length of the device mount 100, this initially only leads to an interesting lighting effect being achieved, since the light is easily perceptibly divided into individual clusters. As an alternative to this, the segment-like subdivision of the primary optics 150 can, however, also be used to actually emit light differently over individual longitudinal sections of the lamp 1 . As a result, there is then, for example, the possibility of not only illuminating, ie brightening, an area assigned to the lamp 1, but information or instructions could also be given in this way mediated. Appropriate control of the LED circuit boards 130 could then be used to generate a time-controlled light emission via the various segments 159, which, for example, generates a running light that moves along the luminaire 1 and indicates a preferred direction (e.g. of an escape route or the like). ) signaled. Light could also be emitted in different colors across the individual segments 159, which is then used, for example, in the sense of parking lot lighting, to show whether a parking lot below the light is occupied or available.

Overall, different lighting effects can be achieved with the help of the lamp shown. The lamp is characterized in particular by the fact that the various components can be manufactured in a simple manner and assembled accordingly.

Claims (14)

1. Light emission unit for a lamp (1), comprising

   • a device carrier (100),

   • at least one LED circuit board (130) and

   • at least one operating device for supplying power to the LED circuit board (130), wherein the device carrier (100) is formed by a sheet metal part comprising a plate-shaped region (101) by means of which two oppositely disposed mounting regions are formed, wherein the LED circuit board (130) is disposed in a first of the two mounting regions and wherein the at least one operating device (140, 141) is disposed in the second mounting region opposite the first mounting region,

   characterized in that
   the plate-shaped region (101) comprises integrally formed spacers (110), which are formed by embossments of the plate-shaped region (101) and project from the plane of the plate-shaped region (101) into one of the two mounting regions and form elevated bearing surfaces (111) for the LED circuit board (130) or the operating device (140, 141).
2. Light emission unit according to Claim 1,
   characterized in that
   the spacers (110) are domed in two directions perpendicular to one another.
3. Light emission unit according to Claim 1 or 2,
   characterized in that
   the spacers (110) are approximately frustoconical.
4. Light emission unit according to any one of the preceding claims,
   characterized in that
   the spacers (110) in the bearing surfaces (111) comprise openings (112) or bores for fastening means.
5. Light emission unit according to any one of the preceding claims,
   characterized in that
   the spacers (110) are disposed offset to one another along a longitudinal direction.
6. Light emission unit according to any one of the preceding claims,
   characterized in that
   the plate-shaped region (101) comprises at least one recess (116), which allows cables to be guided from one side of the plate-shaped region (101) to the opposite side.
7. Light emission unit according to any one of the preceding claims,
   characterized in that
   the plate-shaped region (101) comprises openings (117) which allow the passage of light from the first mounting region into the second mounting region.
8. Light emission unit according to any one of the preceding claims,
   characterized in that
   the device carrier (100) comprises profiles (102) which extend on two sides of the plate-shaped region (101) and allow the device carrier (100) to be fastened in a lamp housing.
9. Light emission unit according to Claim 8,
   characterized in that
   the lateral profiles (102) comprise means for latching to an optical element (150).
10. Light emission unit according to any one of the preceding claims,
    characterized in that
    the device carrier (100) consists of a reflective material or comprises a reflective coating.
11. Light emission unit according to any one of the preceding claims,
    characterized in that
    the LED circuit board (130) is positioned on the spacers.
12. Light emission unit according to any one of the preceding claims,
    characterized in that
    said unit comprises an optical element (150) which is fastened to the device carrier (100), in particular latched to said device carrier, and spans the LED circuit board (130) in a dome-like manner.
13. Light emission unit according to Claim 12,
    characterized in that
    the optical element (150) is divided into segments (159) in a longitudinal direction.
14. Lamp (1), in particular a wet room lamp, comprising a housing and a light emission unit according to any one of the preceding claims disposed in said housing.

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