EP0947766B1 - Lighting fixture for humid environments - Google Patents

Abstract

The light has a housing (1) and a trough (2) which is placed with its edge on a seal (5) on the housing to form a sealed chamber which can accommodate one or more lamps (3). One or more holding elements (4) are attached to the housing to hold the trough fixed to the housing but removable. At least one holding element has one or more attachment elements (21) with one or more hooks for engaging corresp. openings (30) in the housing so that the attachment element(s) are clamped to the housing by elastic deformation; this element has a closure hook section which engages in a trough recess to hold it on the housing, whereby the element is elastically deformable at least in the connecting region between an attachment element and the closure hook section.

Description

The invention relates to a wet room lamp according to the preamble of claim 1.

In such wet room lighting, the area in which a lamp is arranged, on the one hand must be tightly sealed against moisture and on the other hand easily accessible for replacing the lamp and for mounting. The holding element, which holds the tub to the housing must therefore press the tub with a sufficient pressure against the seal to achieve an effective seal.

Furthermore, such a holding element, especially if plastic parts are used, which have a higher susceptibility to breakage, should be as easy to replace.

There are wet room lights with a polycarbonate housing known in which molded on the housing hook overlap the tub rim and thereby secure the tub. In such lights, the tub is fixed by being pressed from below against the hooks, which then grab at a sufficient pressure over the tub rim. However, this closure technology has the drawback that the hooks are often not able to ensure the necessary contact pressure of the tub at the seal or break easily due to the load during Andrükken or loosening of the tub. They also have the disadvantage that they can not be easily solved usually when the tub, for example, to replace the lamp to be removed. In addition, such molded hooks can be realized only in polycarbonate materials, the for use in rooms with aggressive media, eg in electroplating rooms, but also in swimming pools, not having the required resistance.

In practice, therefore, toggle lever closures have been used as holding elements predominantly, in which a hook is hooked into the tub and is pulled by flipping a buckle up, so that the tub is pressed firmly against the seal. Such toggle closures consist of several parts and are therefore expensive. In addition, it is often difficult to attach such toggle fasteners releasably in a manner to the housing, that the closure when removing the tub does not fall down and is lost

In most wet room lights, there is also the problem that after the release of the retaining element, the tub is no longer secured, so that, for example, when replacing a lamp either a second person is required to hold the tub during replacement, or the tub are stored in the meantime got to. The previously proposed solutions are complicated and also include the use of Knebelebelverschlüssen.

EP 0 785 391 A discloses a luminaire with a housing and a trough, which is attached via a seal on the housing. The housing has a plurality of recesses in which a holding element can be attached. For this purpose, two upwardly projecting pins are provided in a recess, behind which engages a projection of the holding element. In addition, a further projection with a cylindrical end projecting from this first projection engages in a complementary projection within the recess of the housing. For attachment of the trough to the housing, a lip is provided at the lower end of the retaining element, which engages in the attached state in a complementary groove below the upper edge of the trough. The holding element consists of a flexible plastic, so that it can be pressed into the throat and released with a suitable tool.

It is the object of the invention to provide a wet room lamp according to the preamble of claim 1 at your disposal, in which the holding element is simple and therefore inexpensive, but on the other hand ensures a sufficient contact pressure of the tub against the seal and easy during installation and maintenance to handle.

This object is achieved by a wet room lamp with the features of claim 1.

Surprisingly, it has been found in the context of the invention that, contrary to the original assumptions, a one-piece bracket, even if this is designed essentially as a wire construction, sufficient to ensure a sufficient contact pressure of the trough to the seal without, as in the According to the prior art toggle buckles, a tensioning device must be present. According to the invention, a simple mounting of the tub is possible by pressing against the hooks attached to the housing. As opposed to plastic housings with molded hook occurring during pressing or releasing the tub load is not absorbed by the locking hook portion alone, but rather substantially from the portion between the fasteners and the hook portion, there is a much lower risk of breakage. Moreover, since the holding members are detachably secured to the housing by tightening, they can be replaced quickly and easily in the event of breakage or fatigue.

According to a particular embodiment it can be provided that at least one retaining element is designed as a one-piece bracket, which is fastened on the side facing away from the tub bottom by at least one clamped in a recess of the housing against at least two walls of the recess releasably secured to the housing clamping member and a closure hook portion has, which engages in a recess of the trough to hold it to the housing, wherein the headband is formed in the region between the clamped clamping element and the holding portion at least partially elastic.

In this embodiment, the fastening element is thus formed essentially by the said clamping element, usually a hook, the pure non-positively, namely by clamping against the walls of the recess or recess, which may be, for example, a groove, but also the area between a projection and the housing wall, is held on the housing.

According to a particular embodiment of the invention may further be provided that at least one fastening element is designed as a retaining clip, which is provided at both ends with one or more hooks, each of which is connected to a projection of the housing z. B. the edge of a recess or the edge of the housing attack, such that the retaining clip is clamped between the two projections.

In this embodiment, therefore, a clamp or clasp is set between two recesses of the housing substantially, which holds the holding element on the housing in the manner of a latching connection.

According to a preferred embodiment can be provided that at least two headband as mentioned above are connected by at least one transverse strut, which is connected via at least one, preferably two parallel elastic strap with the locking hook portion.

The invention has a cross strut for engaging by a user to facilitate the attachment and detachment of the tub in the region of the Verschlußhakenabschitts.

This allows according to the invention a particularly simple handling of the moisture lamp during maintenance and in particular a tool-free release of the tub.

Furthermore, it can be provided in a preferred embodiment of the invention, that in the region of a holding element on the tub at least one to the tub bottom projecting hook is provided, wherein the transverse strut of the guide element and the hook are formed so that after loosening the tub hook in the cross brace can be hung. This allows a user to hang the tub after loosening the housing, so that there is no need to store them in a suitable location or to have them held by a second user.

Advantageously, on one side of the housing several, preferably two such, corresponding with holding elements hooks exist, although with a corresponding arrangement and a small length of the lamp and a single combination of a holding element and a hook can be sufficient. According to a preferred embodiment, such combinations of retaining elements and hooks are provided on both longitudinal sides of the luminaire, so that a user can hang the tub on one or the other side of the housing as needed. It can also be provided that the cross braces are arranged so that a sufficient space between the upper edge of the tub and the housing for work such as replacing the lamp, about 10 to 20 cm, remains when the trough on both sides with the hook is mounted in the transverse struts.

According to a preferred embodiment of the invention can be provided that then one or more guide elements are attached to the closure hook portion in the direction of the tub bottom out, which protrude from the tub to the outside and in the direction of the tub bottom. These outwardly projecting guide elements of the retaining element not only facilitate the pressing of the trough, but also the release of the hooks for removing the tub, since they can be easily attacked by a user.

It can be provided that the guide element is provided with a transverse strut for engagement by a user and preferably has two substantially parallel legs, which are connected at the end facing the tub bottom by the transverse strut.

Furthermore, it can be provided that the holding element has two legs, which are each provided at the end facing away from the trough with a clamping hook, extending from this to a hook portion and are connected to each other in the region of the hook portion. The clamping hooks are each clamped in a recess of the housing, so that the holding element substantially immovably fixed to the housing. According to a preferred embodiment, the clamping hook consists of a V-shaped elastic clamp, which presses with one leg in each case against one of two opposite walls of the recess. This allows a tool-free fastening of the headband to the housing, which is desirable from the viewpoint of easier handling.

Preferably, the retaining element, at least in its elastically resilient regions, made of metal, more preferably, because of corrosion resistance, made of V2A steel. In connection with the inventively provided attachment of the retaining element to the housing by clamping elements or a retaining clip in a recess of the housing, such a holding element is able to ensure a significantly higher contact pressure of the trough to the seal, so that the number of holding elements is relatively low can be held, and yet can be quickly and easily mounted or replaced on the housing. In a particular embodiment, the headband consists essentially of metal wire, in particular in the region of the legs which connect the clamping elements with the hook portion. Those areas which are designed as a handle for engaging by a user or as a hook element, which engages in a depression of the trough, may e.g. be covered by plastic and, if appropriate, be designed to gain from a wire form deviating.

According to a preferred embodiment of the invention can be provided that the width of the voltage applied to the edge of the rim substantially corresponds to the wall thickness of the tub. While a wide margin, which was significantly greater than the wall thickness of the trough, was provided to abut against the seal according to the prior art, a relatively narrow edge is provided according to the invention. This reduces the required contact pressure. It may be provided in particular that the width of the voltage applied to the edge of the seal is less than half the width of the seal, preferably less than a quarter. For example, in a specific embodiment, the seal may have a width of 5 mm and the edge of the trough adjacent to the seal may have a width of 0.8 to 1 mm.

The invention can be applied in particular to those damp-proof luminaires, in which the housing consists of a duroplastic and which are therefore suitable for rooms with aggressive media (swimming pools, electroplating rooms, etc.).

Fig. 1

zeigt einen Querschnitt senkrecht zur Längsachse eines Ausführungsbeispiels einer erfindungsgemäßen Feuchtraumleuchte,

Fig. 2

zeigt eine teilweise Seitenansicht des Gehäuses der Feuchtraumleuchte gemäß Fig. 1,

Fig. 3

zeigt eine Draufsicht auf den Haltebügel gemäß einem ersten Ausführungsbeispiel,

Fig. 4

zeigt eine Seitenansicht des Haltebügels gemäß Fig. 3,

Fig. 5

zeigt eine Draufsicht auf eine zweite Ausführungsform eines erfindungsgemäßen Haltebügels,

Fig. 6

zeigt eine Schnittansicht des Haltbügels gemäß Fig. 5 entlang der Linie A-A,

Fig. 7

zeigt eine Schnittansicht des Haltebügels gemäß Fig. 5 entlang der Linie B-B,

Fig. 8

zeigt eine Seitenansicht des Haltebügels gemäß Fig. 5.

Further features and advantages will become apparent from the following description of an embodiment of the invention with reference to the accompanying drawings.

Fig. 1

shows a cross section perpendicular to the longitudinal axis of an embodiment of a moisture lamp according to the invention,

Fig. 2

shows a partial side view of the housing of the moisture lamp according to FIG. 1,

Fig. 3

shows a plan view of the headband according to a first embodiment,

Fig. 4

shows a side view of the retaining clip of FIG. 3,

Fig. 5

shows a plan view of a second embodiment of a retaining clip according to the invention,

Fig. 6

shows a sectional view of the retaining clip according to FIG. 5 along the line AA,

Fig. 7

shows a sectional view of the retaining clip of FIG. 5 along the line BB,

Fig. 8

shows a side view of the retaining clip according to FIG. 5.

In the first embodiment shown in FIGS. 1 to 4, the wet room lamp consists of a housing 1 to which a trough 2 is attached from below. The housing 1 and the tub 2 together form a space for receiving one or more lamps 3. The tub is pressed by a plurality of attached on both sides headband 4 with its upper edge against a seal running around 5, so that the tub 2 on the one hand firmly held on the housing 1 and on the other hand, the space area in which the Lamp 3 is arranged, is sealed to the outside moisture-proof.

In a luminaire with a 58 W fluorescent lamp, for example, five holding brackets are provided for holding the trough on each side of the damp-proof luminaire.

As is apparent from Fig. 3, according to the first embodiment of the headband has two elastic parallel legs 11, at the lower end of each of which a hook 13 is formed, which is best seen in Fig. 4. The bent-over ends of the two hooks 13 each continue laterally inward into transverse struts 15, which lie essentially on a straight line and to which in each case another, downwardly directed limb 17 adjoins. The two lower legs 17 are connected by another cross member 19, so that a double handle structure is formed as a result, wherein a first bracket portion through the leg 11, the hooks 13 and the cross struts 15 is formed, and a second bracket portion through the leg 17, as well as the cross strut 19 is formed. At its upper end, the two legs 11 are each provided with an elastic clamping hook 21, which is offset over a respective transverse portion 20 relative to the associated leg slightly inwardly. The headband 4 is at least in the region of the legs 11 and the clamping hook 21 made of an elastic material. Preferably, the entire bracket is made of metal, e.g. V2A steel. The aforesaid second bracket portion may be substantially non-elastic, e.g. by using another material.

For receiving a bracket 4, the housing 1, as shown in FIG. 2, provided with two housing pockets 30, which on the one hand, as shown in FIG. 1, are open at the top and on the other hand in its outer wall, as shown in FIG is, on the side facing away from the other housing pocket 30 have a slot 32 which merges into a groove 34 having a downwardly decreasing depth. The distance of the slots 32 and the grooves 34 corresponds to the distance the leg 11, the width of the housing pockets 30 corresponds approximately to the width of a transverse section 20 including the clamping hook 21 attached thereto.

For mounting a retaining clip 4 this is inserted from above into the two housing pockets 30 so that the two clamping hooks 21, as seen in FIG. 1, braced against the two walls of the housing pocket and thereby hold the retaining bracket 4 fixed to the housing and the to the clamping hooks 21 laterally slightly offset legs 11 pass through the slots 32 and are received in the two grooves 34.

The tub 2 has in the vicinity of its upper edge a lateral projection 40 which is provided (not shown) on the underside, ie to the well bottom, with a groove into which in the mounted state, the hook 13 and the cross struts 15 of the Bracket 4 are added. From this throat then extend the legs 17 and the other cross member 19, which serves as a handle, further down. As can be seen from Fig. 1, the two legs 17 are from the wall of the tub 2 at an acute angle to the outside. This facilitates the pushing apart of the holding bracket 4 upon insertion of the tub 2. By the likewise protruding cross brace 19, however, a handle bar is provided, the bracket 4 can move with the aid of which a user for releasing the tub 2 slightly outwards.

The tub 2 is preferably provided on each side in two places with a hook 42 in the vicinity of a retaining clip 4. With the help of these hooks 42, the tub 2 can be hung on the cross braces 19 when the connection between the housing and the tub is released, to avoid dropping the tub when working on the housing, eg when changing the lamp. Here, the trough on one side swinging or suspended on both sides substantially stationary, in the latter case, the distance of the cross member 19 must be sufficiently large of the cross members 15 to a penetration through the gap between the tub and housing with suspended tray. 2 to carry out the relevant work.

In the second embodiment shown in FIGS. 5 to 8 of the generally designated 50 headband is made of a metal sheet, preferably made of V2A steel, formed and has a square central portion consisting of two transverse struts 54a and 54b and perpendicular thereto elastic longitudinal struts 56a and 56b is constructed. At the upper end of the central portion of the crossbar 54a, which extends on both sides beyond the longitudinal struts 56a and 56b out, on both sides of two fastening hooks 58a and 58b are attached, which protrude partially laterally beyond the longitudinal struts 56a and 56b addition. To the cross strut 54a, on the side facing away from the attachment hooks 58a and 58b, a respective spring clip 60a and 60b is attached, which has on its side facing away from the cross strut 54a each have a further attachment hooks 62a and 62b in the reverse direction as the Hook 58a and 58b points. Two hook sections 64a and 64b are provided on the lower transverse strut 54b, likewise projecting laterally beyond the longitudinal struts 56a and 56b, which have, at the end of the hook section, a guide surface 66 pointing in the opposite direction to the hook (see FIG. ,

Between the hook portions 64a and 64b there is centrally provided a gripping tab 70 having a central hole 72 and a downwardly-limiting transverse strut 74 extending downwardly from the cross-strut 54b.

In this embodiment, the hook portions 64a and 64b correspond to the upper cross member 15 of the retainer bracket in the above-discussed embodiment, the tab 70 corresponds to the bracket portion formed by the legs 17 and the cross member 19 in the first embodiment. The hook portions 58a and 58b and 62a and 62b serve to attach the retainer to the housing 1 and the hook portions 64a and 64b serve to grasp the rim of the tub and engage the throat of the protrusion 40 and push the tub against the seal 5.

The operation of the retaining clip according to the second embodiment differs from that of the retaining clip according to the first embodiment substantially by the manner of attachment to the housing 1. In this embodiment, the hooks 58a and 58b engage over the upper one Edge of the housing pocket 30 or other upwardly directed recess of the housing 1 and the hooks 64a and 64b engage around from below the lower edge 80 of the housing wall or another downwardly directed recess of the housing 1, so that the headband 50 through the hooks 58a and 58b and the hooks 62a and 62b, which are connected by the spring clips 60a and 60b, in the manner of a retaining clip on the housing is releasably held.

As in the first embodiment, the hooks 64a and 64b engage over the tub rim from below and press the tub up against the gasket 5. The guide surfaces 66 facilitate insertion of the tub by pressing it from below. Since the headband 50 is secured by the hooks 62a and 62b against shifting upwards, a release of the retaining clip during insertion by pressing from below is excluded.

How the first embodiment is used, the grip tab 70, especially the release of the connection between the housing and as in the first embodiment, the possibility, in the hole 72 above the cross brace 74 provides to mount the tub 42 by means of the hook.

The features disclosed in the foregoing description, the claims and the drawings, features of the invention may be material for realizing the invention in its various embodiments both individually and in any combination.

LIST OF REFERENCE NUMBERS

1

casing

2

tub

3

lamp

4

headband

5

poetry

11

Upper leg of the retaining clip

13

hook

15

Upper cross strut of the retaining bracket

17

lower leg of the retaining bracket

19

lower cross strut of the retaining bracket

20

cross section

21

clamping hook

30

housing case

32

slot

34

groove

40

Tab of the tub

42

hook

50

headband

54a, 54b

crossbars

56a, 56b

longitudinal struts

58a, 58b

fastening hooks

60a, 60b

spring clip

62a, 62b

fastening hooks

64a, 64b

hook section

66

guide surface

70

grip tab

72

hole

74

crossmember

80

lower case edge

Claims (13)

1. Damp-proof luminaire having a housing (1) and a trough (2), which is placed with its edge over a seal (5) on the housing (1), with the result that a tightly sealed spatial area is formed in which one or more lamps (3) are accommodated, one or more holding elements (4; 50) being fitted to the housing (1) which hold the trough (2) tightly but detachably on the housing (1), at least one holding element (4; 50) having one or more fastening elements (21; 58a, 60a, 62a, 58b, 60b, 62b), which each have one or more hooks (21; 58a, 58b, 62a, 62b) for engaging in associated cutouts (30) of the housing (1) in such a way that the fastening element(s) are braced against the housing (1) by means of elastic deformation, and this holding element (4; 50) having a closure hook section (13, 15; 64a, 64b), which engages in a depression of the trough (2) in order to hold it on the housing (1), the holding element (4; 50) being designed to be at least partially elastically deformable at least in a connection region between a fastening element and the closure hook section, and a further section of the holding element (17, 19; 70) to be gripped by a user and having a transverse strut (19) or a grip tab (74) being provided in the region of the closure hook section (13, 15; 64a, 64b) in such a way that it is possible to detach the connection between the housing and the trough without the use of a tool.
2. Damp-proof luminaire according to Claim 1, characterized in that at least one holding element (4) is in the form of an integral clip, which is fastened detachably to the housing (1) on the side remote from the trough base by means of at least one clamping element (21), which is braced in a cutout (30) of the housing (1), and has a closure hook section (13, 15), which engages in a depression of the trough (2) in order to hold it on the housing (1), the holding clip (4) being designed to be at least partially elastic in the region between the braced clamping element (21) and the closure hook section (13, 15).
3. Damp-proof luminaire according to either of Claims 1 and 2, characterized in that the holding element (4) is formed substantially from a metal wire.
4. Damp-proof luminaire according to Claim 1 or 2, characterized in that at least one fastening element is in the form of a holding clasp (58a, 60a, 62a, 58b, 60b, 62b), which is provided at each of its two ends with hooks (58a, 58b, 62a, 62b), which each act on a projection of the housing in such a way that the holding clasp (58a, 60a, 62a, 58b, 60b, 62b) is braced between the two projections.
5. Damp-proof luminaire according to Claim 4, characterized in that at least two holding clasps are connected by at least one second transverse strut (54a), which is connected to the closure hook section (64a, 64b) at least via an elastic longitudinal strut (56a, 56b).
6. Damp-proof luminaire according to one of Claims 1-5, characterized in that at least one hook (42), which projects towards the trough base, is provided in the region of a holding element (4; 50) on the trough (2), the first transverse strut (19; 74) of the holding element (4; 50) and the hook (42) being designed such that, once the trough (2) has been detached, the hook (42) can be suspended in the first transverse strut (19; 74).
7. Damp-proof luminaire according to one of Claims 1 to 6, characterized in that then one or more guide elements (17, 19; 66), which protrude outwards from the trough (2) and in the direction towards the trough base, are positioned on the closure hook section (13, 15; 64a, 64b) in the direction towards the trough base.
8. Damp-proof luminaire according to Claim 7, characterized in that a guide element (17, 19) is provided at the end facing the trough base with a transverse strut (19) to be gripped by a user.
9. Damp-proof luminaire according to Claim 8, characterized in that the guide element (17, 19) has two limbs (17), which are connected by the transverse strut (19).
10. Damp-proof luminaire according to one of Claims 1, 2 and 3 and/or one of Claims 6 to 10, characterized in that the holding element (4) has two limbs (11), which are each provided at the end remote from the trough (2) with a clamping hook (21), extend from said clamping hook as far as the closure hook section (13, 15) and are connected to one another in the region of the closure hook section.
11. Damp-proof luminaire according to one of Claims 1 to 10, characterized in that the width of the edge of the trough (2) which bears against the seal (5) substantially corresponds to the wall thickness of the trough (2).
12. Damp-proof luminaire according to one of Claims 1 to 11, characterized in that the width of the seal (5) is greater than the width of that edge of the trough (2) which rests on the seal (5) by more than half.
13. Damp-proof luminaire according to one of Claims 1 to 12, characterized in that the housing (1) consists of a thermosetting plastic.

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