EP3527888A1 - Luminaire, particularly moisture-proof luminaire - Google Patents

Abstract

The invention relates to a luminaire, in particular a moisture-proof luminaire, comprising an elongated housing, a plate-shaped device carrier which carries a plurality of semiconductor light sources and a trough-shaped optical cover with longitudinal legs defining an opening of the cover, the device carrier being latched to the cover. The lamp according to the invention is characterized in that the cover and the housing have a tongue and groove connection with corresponding latching elements for latching the cover to the housing, the latchable tongue and groove connection being detachable without tools.

Description

The invention relates to a luminaire, in particular a moisture-proof luminaire, comprising an elongated housing, a plate-shaped device carrier carrying a plurality of semiconductor light sources such as LEDs, and a trough-shaped optical cover with longitudinal limbs defining an opening of the cover, wherein the device carrier on the cover by means of a Locking connection is locked.

Such lights are known in the art, wherein the housing can be fixed, for example in the case of a ceiling light on the ceiling or in a suspended ceiling, with a usually detachable connection between the cover and the housing can be provided.

A generic light is for example in the utility model DE 20 2016 000 122 U1 disclosed. In these conventional lights for connecting the cover to the housing operable connection means we Klammerhakten, rocker arm locks or the like provided over which the cover can be solved, for example, for maintenance of the housing.

The present invention has for its object to improve a conventional luminaire in terms of their functionality.

This object is achieved by the present invention with a lamp, comprising the features of claim 1. The lamp according to the invention is characterized in that the cover and the housing have a tongue and groove connection with corresponding locking elements for locking the cover to the housing, wherein the lockable tongue and groove connection can be released without tools.

In accordance with the invention, the functional components for providing the tongue and groove connection at the same time have functional elements or designs for providing a snap-fit, ie. Locking connection, which come or lead to the positive locking of the tongue and groove connection for locking. In the production of the locking, a joining part deforms elastically and then hooked releasably or permanently with a corresponding locking element. According to the invention, one of the components, cover or housing, a groove and the other component has a groove corresponding to the groove, wherein both at the groove defining inner surfaces and on the spring-defining surfaces each at least one locking element can be arranged, said Locking elements correspond and can automatically provide the described latching between tongue and groove and thus between cover and housing during the joining process for producing the tongue and groove connection.

The luminaire according to the invention is easy to handle, in particular in the attachment of the cover to the housing, since the joining process automatically locks the components to one another, so that during the joining process, a sequential actuation of a plurality of clip hooks or Toggle lever locks or the like can be omitted. In addition, the appearance of the lamp improves, since the omission of these additional closure means in the region of the closure portions between the housing and the cover, a closed and homogeneous appearance of the lamp can be provided.

Further advantageous embodiments and features according to the invention are specified in the general description, the figures, the description of the figures and the subclaims.

Conveniently, it can be provided that in the inventive lamp corresponding locking elements of the tongue and groove connection are covered by the outer groove wall to maintain a closed and homogeneous appearance of the luminaire, such that the locking elements for a viewer of the lamp are not visible.

It can be provided for providing the described tongue and groove connection between the cover and the housing to provide a respective receiving groove on the cover into which an associated spring for connecting the two parts can be immersed.

In a particularly advantageous embodiment, in particular to provide an attractive appearance of the lamp, the receiving groove on the housing and the spring can be provided according to the cover. For this purpose, the housing may be formed in cross-section approximately U-shaped with each other in the transverse direction, defining an opening of the housing legs (side legs) at their respective free end portion may be formed in the direction of the cover receiving groove with spaced in the transverse direction of the lamp groove walls , In this case, the outer groove wall of the receiving groove on its inner side in the longitudinal direction spaced locking elements have for locking with associated locking elements of the cover. This embodiment also has the advantage that the connecting or receiving groove has in the installation position downwards and insofar as the tongue and groove connection between the cover and the housing is protected or covered.

Preferably, the outer groove wall with a uniform height extend over the length of the housing, which further enhances the harmonious appearance of the lamp. In an advantageous embodiment, it can be provided that the inner groove wall of the receiving groove has a lower height than the outer groove wall, for example, to receive in the space thus formed portions of the equipment carrier, which may be aligned to the inner groove wall.

A design such that the free edge of the outer groove wall extends beyond the inner corresponding latching elements of the leg of the housing, further has the advantage that it is provided with an engaging edge, for. for the purpose of maintenance of the lamp, sequentially releasing the catch at the longitudinally spaced (detent) locations, subsequently releasing the tongue and groove joint by moving it away from one another between the housing and the cover and thereby removing the connection between the cover and the housing.

In one embodiment, it may be provided that latching elements of the cover in each case at its two longitudinal ends attaching and extending on a transverse web of the respective longitudinal leg walls comprising the design of a receptacle for a respective associated locking element of the housing. This measure, on the one hand, reinforces the cover in the region of the latching by the walls extending from the latching element and thus a more symmetrical derivation of the forces occurring during the joining / separating operation Components ready. In addition, they provide a secure locking of the associated locking elements ready, since one of the locking receptacle of the cover associated locking element of the housing rests in the latching state not only with respect to its locking surface on the locking surface of the associated locking element of the cover, but also the respective locking element, which for example can be formed as a latching hook, is received within the receptacle on the cover, so that there is a positive connection between the two corresponding latching elements in the longitudinal direction.

Preferably, it may be provided to make an expandable seal within the receiving groove after completion of the joining movement between the cover and the housing for setting the described tongue and groove connection and for locking. For this purpose, for example, a hollow insertion element such as a thin needle introduced into the groove, preferably close to the groove bottom and then the seal are foamed by introducing the material into the groove. In another embodiment, however, it may also be provided to place on the groove base before setting the tongue and groove connection and subsequent locking a seal, which after setting the tongue and groove connection and locking as in the first-mentioned embodiment, a hermetic seal of the interior the lamp provides to the outside.

In order to ensure at the junction of the cover and the housing that the longitudinal legs of the housing are not widened when the guide surfaces of mutually associated locking elements of the cover or the housing, but the respective receiving groove can be suitably provided that the springs of the optical cover on the inside a plurality of longitudinally spaced and extending inwardly and toward the base of the cover joining or guiding ribs have for support on the inner groove wall of the housing. In this case, the design may be such that in the joining movement between the cover and housing first said joining ribs come into contact with the inner surface of the inner groove wall of the housing and only then or simultaneously the successive sliding inclined or guide surfaces of the associated locking elements of the cover and the Housing for widening the receiving groove during the joining process.

In order to provide an improved sealing function when using a seal within the receiving groove of the tongue and groove connection, it can be provided that the spring of the cover has at its free end a web which is arranged on the outside at longitudinal locations on which a latching element on the spring , merges into an oblique surface of the latching element and adjoins the inside of the joining rib design, so that said web is formed as a sealing web which presses the seal against the groove bottom of the receiving groove.

In order to facilitate the disengagement of the cover and housing, it can be expediently provided that a respective optical and / or haptic marking is designed on the outside of the outer groove wall in the longitudinal region of a latching element arranged on the inside of the outer groove wall, for example in the form of two markings Ribs which indicate the longitudinal extension of the respective latching element. These markings can indicate to the respective user at which points the respective outer groove wall is to be elastically deflected in order to release the respective catch between the cover and the housing at this point. Under a haptic marking any surface designs on the outside of the outer groove wall at the designated locations are meant, which can be detected by touching.

Figur 1

in einer Explosionsdarstellung in einer Seitenansicht einer Ausführungsform einer erfindungsgemäß gestalteten Leuchte,

Figur 2a

den Geräteträger der Leuchte gemäß Figur 1 in einer Schrägansicht,

Figur 2b

die optische Abdeckung der erfindungsgemäßen Leuchte gemäß Figur 1 in einer Schrägansicht,

Figur 2c

die beiden in den Figuren 2a, b angegebenen Bauteile im verrasteten Zustand in einer Schrägansicht,

Figur 3

das Gehäuse der erfindungsgemäßen Leuchte der Figur 1 in einer Schrägansicht,

Figur 4

die erfindungsgemäße Leuchte in einer offenen Stirnseitenansicht und

Figur 5

die Verrastung des Gehäuses mit der optischen Abdeckung

zeigt.The invention will be elucidated below by describing an embodiment and modifications with reference to the accompanying drawings, in which: FIG

FIG. 1

in an exploded view in a side view of an embodiment of a light designed according to the invention,

FIG. 2a

the device carrier of the luminaire according to FIG. 1 in an oblique view,

FIG. 2b

the optical cover of the luminaire according to the invention FIG. 1 in an oblique view,

Figure 2c

the two in the FIGS. 2a, b specified components in the locked state in an oblique view,

FIG. 3

the housing of the lamp according to the invention of Figure 1 in an oblique view,

FIG. 4

the luminaire according to the invention in an open end view and

FIG. 5

the locking of the housing with the optical cover

shows.

FIG. 1 represents an exploded view of the lamp according to the invention, which is formed in the described embodiment as a wet room ceiling light. It comprises in the described embodiment, an elongated, trough-shaped housing 10 with a perpendicular to the longitudinal extent approximately U-shaped cross-section through a bottom portion 11 and two thereof approximately perpendicularly departing side legs 12a, b is formed. At the free end of the two side legs 12a, b, the housing 10 each have a longitudinally extending receiving groove 13a, b on for cooperation with longitudinally extending springs 55a, b at the free ends of the legs 51a, 51b of the trough-shaped cover 50. Depending on the embodiment, the Housing 10 may be formed in one or more pieces, for example in three pieces with an elongated part and one end face on the longitudinal end of the housing 10. In all of these described embodiments, the receiving groove on the housing and the spring on the cover in these end face sections, so that light closed is. Depending on the embodiment, the housing may be formed of a plastic, in another embodiment of a metal material.

The inventively designed lamp also has a so-called device carrier 30, which is here plate-shaped with a top 31 and a bottom 32 is formed. While the upper side 31 is directed in the installed position to the bottom 11 of the housing, the underside 32 of the device carrier 30 in installation position on the trough bottom of the optical cover 50. The device carrier 30 carries in the described embodiment on its underside 32, the lighting means in the form of a plurality of Semiconductor light sources, in particular LEDs, which may be arranged for example in a series arrangement on a printed circuit board, wherein the circuit board is mounted on the underside of the device carrier 30. In another embodiment, the LEDs can also be applied directly to the device carrier 30. In addition, the device carrier interconnections, wiring, terminals and in particular one or more operating devices for the lamps, the interconnection is then carried out via corresponding openings or feedthroughs from the top 31 to the bottom 32. For clarity of illustration, the assembly of the device carrier described is not shown in the figures. Depending on the embodiment of the device carrier may be made of a metal or a plastic, in particular in one piece.

As a further component of the luminaire 1 according to the invention, the latter also comprises a trough-shaped optical cover 50, which in the described embodiment is made of a translucent material and in another embodiment can also be transparent. For the purpose of guiding light or for designing a predetermined light distribution curve below the luminaire, the cover can be provided on its inner surface with light-guiding structures 52, for example in the form of longitudinally extending ribs in prismatic form. However, such light-guiding structures may also be provided on the optically effective outer surface 53, wherein in the described embodiment, the cover to prevent accumulation of dirt has a smooth, unstructured surface. It should be noted that in FIG. 1 shown cover and the housing are shown open on its right side for clarity of illustration. In one embodiment, both the housing 10 and the cover 50 may be integrally formed. However, it is also possible to have several of the FIG. 1 Assemble specified elements for the design of a lamp with basically any length.

With reference to the FIGS. 2a to 2c Hereinafter, the structure of the equipment carrier 30 and the cover 50 with respect to their connection to each other will be explained. It should be noted that only by the selected perspective, the components 30 and 50 of the lamp 1 according to the invention in the representations of FIGS. 2a-c stubborn than in Fig. 1 appear.

In the too FIG. 1 more detailed representation of the FIG. 2a of the device carrier 30 are on the two side flanges 33a, b longitudinally spaced locking recesses 35 are provided, in which in a manner to be described corresponding latching hooks 57 of the optical cover 50 cooperate when connecting the two parts together, see Fig. 2b , In addition, a respective guide recess 36 is provided in the device carrier 30 between two longitudinally spaced latching recesses 35, which is incorporated in a channel-shaped shoulder 37 in a transverse end section of the device carrier, to which a respective side flange 33a, b adjoins, which is substantially perpendicular to the top - or bottom of the device carrier runs. These guide recesses 36 act in a manner to be described with arranged on the optical cover 50 tabs 56 for relatively guiding the device carrier to the cover 50 in the process of Verrastens both parts together.

In the illustration of the optical cover 50 of the FIG. 2b the locking hooks just given 57 and the guide plates 56 are shown. The latching hooks 57 extend inwards in the transverse direction on the respective side limbs 51a, b, and provide a latching surface 58 extending perpendicularly to the respective side limbs 51a, b, which presses on the upper side of the groove 37 after being latched to the equipment support 30. In the latched state to be described below, the guide plates 56 extend in the guide recesses 36 of the device carrier 30. In the area of the springs 55a, 55b, a plurality of guide ribs 60 are again provided spaced apart in the longitudinal direction of the cover, extending almost over the entire spring height and after extend inside. It should be noted that the locking recesses, guide recesses, guide straps, and latching hooks described on both longitudinal sides of the components 30, 50 are constructed identically.

When assembling the device carrier 30 with the optical cover 50, both are initially oriented relative to each other, the guide straps 56 are aligned with the associated guide recesses 36 and both parts 30, 50 are moved in a direction perpendicular to the longitudinal extent of the parts until the guide straps 56 engage in the respective associated guide recesses 36. Upon further movement toward each other, underside sections of the channel 37 slide along the bevel or guide surface of the latching hooks 57 until the latching hook 57 with its latching surface 58, see FIG FIG. 2b , comes to rest on the surface of the groove 37 of the device carrier 30 or snaps. With the described latching of the latch hooks 57 of the cover 50 in the associated recesses 35 of the device carrier 30, both components 30, 50 releasably connected to each other, see Fig. 2c , In this case, the outer surfaces of the side flanges 33a, b of the device carrier 30 abut against the guide ribs 60 extending inwardly from the spring 55a, b.

For example, from the representation of Figure 2c shows, the two side legs 51a, b at their end portions and the springs 55a, b on their outer sides in the longitudinal direction spaced latching hooks 64, which cooperate with associated, arranged on the housing 10 locking elements for locking the cover 50 with engaged device carrier on the housing 10th interact. Evidenced the representation of Figure 2c In the described embodiment, the latching hooks 64 each have an inclined surface or guide surface 65 and a latching surface 70 extending approximately perpendicular to the respective spring. In the described embodiment, 64 walls 66a, b set at the two longitudinal ends of the respective locking element, which are outwardly and in the representation of Figure 2c extend down to a crosspiece 68 extending from the respective spring 5a, b. The latching surface 70, the inner sides of the walls 66a, b and the visible surface in the figure of the transverse web 68 form a respective latching receptacle for receiving a respectively associated latching hook 20 on the housing 10, which will be discussed in more detail below.

In the presentation of the FIG. 3 of the housing 10 go design features of the housing for locking the cover 50 with the housing 10 in detail. The elongated trough-like housing 10 has in the described embodiment, two side legs 12a, b, at their free ends in each case a receiving groove 13a, b for receiving a respective spring 55a, b of the cover, see for example FIG. 2b , on. This receiving groove is formed in each case by a here approximately perpendicular to the respective side legs 12a, b extending groove base wall 18, 19 and two adjoining and spaced groove walls extending, ie in the case of the receiving groove 13a, the inner groove wall 16 and the outer groove wall 17 and in the case of Receiving groove 13b, the inner groove wall 14 and the outer groove wall 15th

In this case, spaced from the free end of the respective outer groove wall 15, 17 provided at their inner side directed towards the groove in each case in the longitudinal direction spaced latching hooks 20 are provided. The latching hooks 20 extend transversely to the longitudinal direction inwards with a directed toward the free end of the outer groove wall inclined or guide surface 21 and a directed into the respective Nutinnere locking surface 22, which extends approximately perpendicular to the outer groove wall here. The locking hooks 20 arranged on the inside of the outer groove wall 17 are concealed except for the latching hooks 20 visible on the right-hand end of the housing. Marking ribs 23a, b acting as guide aids are provided on the outer side of the outer groove walls 15, 17, each marking a latching hook 20 arranged at the rear side of the outer groove wall 15, 17. They serve when releasing the latching between the housing and the cover as a handle mark to identify the locations at which the respective outer groove wall 15, 17 is gripped and to pivot outwards to sequentially lock the latching hook 20 in to solve the kind of a zipper procedure.

A latching of the cover 50 with attached equipment carrier 30 to the housing 10 is effected in that the springs 55a, b of the cover 50 aligned with the receiving grooves 13a, b of the housing and housing and cover are then moved towards each other. In this case, first slide the guide surfaces 65, 21 of the associated locking elements 64, 20 on each other and at the same time the guide ribs 60 of the cover 50 along the inside of the inner groove wall 14 along, thereby ensuring that the receiving groove is widened for receiving the spring 55 a, b in the Receiving groove 13a, b and not instead the housing on its side legs 12a, b is bent. In the further movement of the cover on the housing to slide the surfaces 21, 65 on each other and pivot the outer groove walls 15, 17 elastically outwardly until the locking surface 22 of the latching hooks 20 reaches the locking surface 70 of the associated latching hooks 64 and the outer groove walls 15th , 17 pivot inwardly, whereby associated locking surfaces 22, 70 come to rest and thus the cover is locked to the housing, see Fig. 4 , This position is characterized in the described embodiment in that the latching hooks 20 are received in the respective locking receptacles 69 of the cover.

FIG. 5 shows the in FIG. 4 Locking situation shown on the right side in detail from a slightly different angle. Visible, the guide ribs 60 bear against the inside of the inner groove wall 16, while the latching hooks 20 of the housing are accommodated in the latching receptacles 69. The in FIG. 5 Reference numeral 80 marked cavity forms a sealing space in which a seal is foamed after locking the cover with the housing. In this case, the spring 55a, b protrudes with the sealing web 67 into the sealing material. Evidently the FIG. 5 are the side flanges 33a, b in the locked state of Cover 50 with the housing 10 to the inner groove wall 14, 16 aligned.

LIST OF REFERENCE NUMBERS

1

lamp

10

casing

11

bottom section

12a, b

leg

13a, b

receiving groove

14

Inner groove wall

15

Outer groove wall

16

Inner groove wall

17

Outer groove wall

18

Nutgrundwand

19

Nutgrundwand

20

Latch hook, locking element

21

guide surface

22

Rest area

23a, b

Marking, marking ribs

30

equipment rack

31

top

32

bottom

33a, b

side flange

35

recess

36

guide recess

37

Heel, gutter

50

Optical cover

51a, b

Side legs, longitudinal thighs

52

Light directing structure

53

outer surface

55a, b

feather

56

guide tab

57

Latch hook, locking element

58

Rest area

60

Guide rib, joining rib

61

web

64

Latch hook, locking element

65

Guide surface, oblique surface

66a, b

Side wall

67

sealing web

68

crosspiece

69

latching receptacle

70

Rest area

80

seal chamber

Claims (9)

Luminaire (1), in particular a moisture-proof luminaire, comprising an elongated housing (10), a device carrier (30) carrying a plurality of semiconductor light sources and a trough-shaped optical cover (50) with longitudinal limbs (51a, b) defining an opening of the cover, wherein the device carrier is latched to the cover, characterized in that the cover (50) and the housing (10) have a tongue and groove connection (13a, 55a, 13b, 55a) with corresponding latching elements (20, 64) for latching the Cover (50) with the housing (10), wherein the latchable tongue and groove joint (13a, 55a, 13b, 55a) is releasable without tools. Luminaire (1) according to claim 1, characterized in that the housing (10) is approximately U-shaped in cross-section with spaced, defining an opening of the housing legs (12a, b), at their respective free end portion a receiving groove (13a, 13b) is formed with groove walls (14, 15, 16, 17) spaced apart in the transverse direction of the luminaire (1), wherein the outer groove wall (15, 17) projects beyond the inner groove wall (14, 16) in its height and on its inside longitudinally spaced locking elements (20) for locking with associated locking elements (64) of the cover (50) and wherein the outer groove wall (15, 17) extends over the length of the housing (10) with a uniform height. Luminaire (1) according to claim 2, characterized marked in that corresponding locking elements (20, 64) of the tongue and groove joint (13a, 55a, 13b, 55a) are covered by the outer groove wall (15, 17) of the housing. Luminaire (1) according to claim 1, 2 or 3, characterized in that respective latching surfaces (21) of the latching elements (20) of the housing in the direction of the cover (50) below the free end of the inner groove wall (14, 16) of the housing ( 10) are arranged. Luminaire (1) according to one of claims 1 to 4, characterized in that longitudinal limbs (51a, b) of the optical cover (50) are formed at their respective free end portion as a spring (55a, b) having on the outside a plurality of spaced and with the locking elements (20) of the housing (10) cooperating locking elements (64), wherein the locking elements (64) of the cover to the spring (55 a, b) inclined guide surface (65) and one to the spring (55 a, b ) comprise approximately vertically extending latching surface (70). Luminaire (1) according to one of claims 1 to 5, characterized in that latching elements (64) of the cover (50) each at its two longitudinal ends and attaching to a transverse web (68) of the respective longitudinal leg (51a, b) extending walls ( 66b, 66a) for designing a Receiving (69) for a respectively associated locking element (20) of the housing (10). Luminaire (1) according to one of claims 5 or 6, characterized in that the springs (55a, b) of the optical cover (50) on the inside a plurality of longitudinally spaced and extending inwardly and in the direction of the base of the cover joining ribs (55a). 60) for supporting on the inner groove wall (14, 16) of the housing (10). Luminaire (1) according to any one of claims 5, 6 or 7, characterized in that the springs (55a, b) of the cover (50) at its free end a sealing web (67), the outside in an inclined surface (65) of a Locking element (64) merges and connects to the inside of the joining rib design (60, .... 60). Luminaire (1) according to one of claims 1 to 8, characterized in that on the outer side of the outer groove wall (15, 17) in the longitudinal region of a arranged on the inside of the outer groove wall locking element (20) has an associated haptic and / or optical marking ( 23a, b) is designed.

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