KR20080109714A - Damp-proof luminaire having at least one locking web acting between a trough-shaped housing and a cover - Google Patents

Abstract

The invention relates to a damp-proof luminaire having a trough-shaped housing (2), which is provided with a circumferential marginal groove (18), having a transparent cover (4), which covers the open side of the housing (2), whose circumferential marginal region (8c) enters into the marginal groove (18) of the housing (2) and which is connected to the housing (2) detachably by a plurality of closure apparatuses (3), which are arranged distributed over the circumference, and terminals located in the housing (2) for luminous means (6). In order to improve the protection against the ingress of water in the region of the partition joint between the housing (2) and the cover (4), the marginal region (8c) of the cover (4) bears with at least one marginal edge against the groove wall or the groove rim. ® KIPO & WIPO 2009

Description

Damp-proof luminaire having at least one locking web acting between a trough-shaped housing and a cover}

The present invention relates to a moisture proof luminaire according to the preamble of claim 1 or 12.

This kind of moisture-proof luminaire consists of two parts of the entire luminaire housing, one of which is a trough housing for fixing to the carrier, for example on a wall or ceiling. And other parts, formed at least partially of a transparent cover, and are detachably connected to the trough housing by locking elements. In the entire housing formed of the trough housing and the cover, at least one lamp is mechanically and electrically connected, and the light emitted by it during operation is emitted through the transparent cover for indoor lighting.

A luminaire of the kind shown in the introduction is for example disclosed in EP 0 785 391 A1. In such known luminaires, approximately C-shaped locking elements serve to secure the cover to the trough housing, which are configured as individual components, the C-shaped having one end portion constrained. To engage the pocket undercut portion in the trough housing and extend past the separating seam between the trough housing and the cover, so that the other end portion is edged of the trough housing with constant traction. It meshes with the rear part, which presses the trough housing and cover together with a constant clamping force. The circumferential wall of the housing branches from the circumferential housing edge portion to the outer and inner edge portions, which extend in a direction transverse to the plane of the housing opening and end at the housing edge. The cover has a middle edge portion, which extends in the form of a comb, with lateral spacing between the outer and inner edge portions, and the edge of the cover extends to the outer edge portion and faces it with one end.

In the case of this known moisture-proof luminaire, the edge portions which are interlocked with each other in a comb form a barrier to moisture penetrating into the luminaire, but between the cover edge portion and the outer edge portion between the outer edge portion and the intermediate edge portion. Due to the capillary attraction through the seams, there is a risk of water penetration. This risk is in particular at the site of the C-shaped locking elements which engage under the cover edge and which closely extend on the outer surface of the lighting housing. Moisture accumulates in particular between the C-shaped locking elements and the outer surface of the luminaire housing and passes directly through the seams described above, which is of course undesirable.

SUMMARY OF THE INVENTION The present invention is based on the purpose of improving the protection of moisture ingress in a separation joint between a housing and a cover in a moisture proof luminaire of the kind introduced in the introduction. This object is achieved by the features of claim 1 or 12. Preferred developments of the invention are disclosed in the relevant dependent claims.

In the case of the moisture proof luminaire according to the invention of claim 1, the edge portion of the cover presses at least one edge edge or edge region of the groove wall. In this arrangement according to the invention, the blocking effect against water penetration is enhanced by the pressure of the middle edge portion against the outer and / or inner tapered surfaces, since this pressure provides a circumferential barrier of the ring seal concept. . Another advantage is that the above-described acupressure can form stops, whereby the housing and the cover are spaced apart from each other to pressure each other at a predetermined position. Since such stops extend in the circumferential direction, the acupressure position is very stable. Thus a special stop between the housing and the cover can be omitted, which contributes to the simplification.

In the case of the luminaire according to the invention of claim 12, a blocking web is arranged in the overlapping region, extending from the outer edge portion of the housing or the middle edge portion of the cover to the other opposite edge portion. This eliminates bearing joints between the cover and the outer edge of the housing, where moisture can pass due to capillary attraction. Instead, in the arrangement according to the invention, there is a distance between the cover and the free edge of the outer edge portion where no capillary attraction can occur. In addition, between the edge portions, a circumferential barrier formed by the blocking web is arranged, which makes it more difficult for the spray water to penetrate into the gap between the edge portions, thereby obtaining the desired improvement.

The arrangements according to the invention are particularly suitable for ceiling lighting in the case where the edge parts which are engaged with each other in the same way as the comb form a barrier to water penetration.

If the circumferential groove has tapered surfaces that allow for acupressure of the middle edge region, it provides a simple configuration and an improvement in the blocking effect, in which the tapered surfaces, in particular with concave converging surfaces, Bordered, these converging surfaces are also those that can be placed at the edge portion of the cover.

Therefore, it is preferable to arrange in the groove a ring-shaped free space which is arranged to face the edge portion of the cover. This ring-shaped free space can serve to receive a ring seal, which enables the sealing of the separating seam between the housing and the cover.

In order to further enhance the blocking effect against water ingress, it is preferable to combine the arrangement according to claim 1 with the arrangement according to claim 12, which results in a two-step circumferential barrier.

It is also desirable to place the blocking web extending along the edge portion at a distance from the edge of the cover. This gives the outer edge area in the form of an effective drip-off edge.

Other dependent claims include features that further enhance the blocking effect and provide configurations that are simple and economical to manufacture. Other advanced features of the present invention provide other improvements in structures that operate small and reliably.

In the following, the preferred configuration of the present invention and the advantages obtainable thereby will be described in more detail with reference to the embodiments.

1 is a perspective view from below of a moisture-proof light fixture according to the present invention.

2 is an enlarged longitudinal sectional view showing the left half of the luminaire.

FIG. 3 is an enlarged view of a separate seam of the luminaire, indicated by X in FIG.

4 shows an enlarged view of a modified configuration for the separation seam site according to FIG. 3;

The main part of the moisture proof luminaire, which is generally indicated by reference numeral 1 in FIG. 1, is a cover that is detachably coupled to the housing by a trough housing 2 and a plurality of locking devices 3 distributed around it. 4) and a lamp 6 disposed in the hollow part 5 between the trough housing 2 and the cover 4, where the lamp 6 is connected and connected by mechanical and electrical connection elements, not shown. It is fixed.

The locking devices 3 are present in all embodiments.

In the case of the present embodiment, for example, the prevention of sprayed water penetration, inter alia, the prevention of sprayed water penetration at the part of the dividing joint 7 between the trough housing 2 and the cover 4 Moisture-proof luminaires that meet special protection requirements are included. This protection can be spray water prevention using the edge portions of the housing 2 and the cover 4, which extend in the circumferential direction in an enclosing manner, which overlap and interlock with one another, for example in the form of a comb. These edge sites can be formed by web walls 8a, 8b, 8c, which form a maze to provide protection against spray water penetration.

In the case of this embodiment, the wall 2a of the trough housing will be branched into two web walls 8a, 8b having a transverse spacing at their free edge portion, which web walls 8a, 8b. The transverse spacing therebetween is greater than the edge region 8c of the cover 4, which meshes with the transverse spacing between the edge regions 8a, 8b. The edge portions 8a, 8b, 8c of the web walls protrude in the direction crossing the separating seam 7 or in the direction crossing the face of the housing opening from the edge portion of the housing wall or cover 4.

In addition to the maze, the separating seam 7 can preferably be sealed by a ring seal, which ring seal, for example, is a circumferential groove 2b between the web walls 8a, 8b. It is provided with the sealing ring D which is arrange | positioned at the base part of the groove, and presses the web wall 8c. This sealing ring D consists of a soft material, for example a foam ribbon.

 The outer web wall 8b of the housing wall 2a is the part of the enlarged step 9 at the free edge portion of the housing wall 2a.

 The housing wall 2a has fixing elements 12 for fixing to the carrier, for example on its support side 11, which is formed towards the ceiling or wall of the room. In this embodiment, the luminaire 1 has a form in which the length is extended and enlarged straight, and the length L1 is a multiple of the width B. The trough housing 2 and the cover 4 are also correspondingly formed. The cover consists of a transparent material, for example glass or plastic, at least a part away from the housing 2, for example a domed part, through which the light of the lamp 6 is radiated in the main radiation direction S and transverse directions. .

The plurality of locking devices 3 are arranged and configured such that they are similar to each other or both sides are symmetrical to each other. Thus, at least one locking device 3 of other embodiments may be applied to each case described below.

In all embodiments, the locking device 3 has a locking element 3a having a longitudinal C-shaped longitudinal cross-sectional shape. This locking element 3a has end portions, denoted by reference numerals 3b and 3c, and is engaged in a clamping manner, using an upper end portion 3b, while simultaneously engaging the rear of the trough housing 2. In the pocket 13 of the housing 2. The pockets opening away from the separating seam 7 have two pocket walls 13a and 13b facing each other, extending approximately parallel to the longitudinal intermediate face 15, or are undersize. It is adapted to the size of the end portion 3b rather than the undersize. The groove 13 may extend to extend in the longitudinal direction of the luminaire 1.

The locking element 3a extends from the end portion 3b towards the cover 4, on the outside of the luminaire housing, in a form suitable for the corresponding external shape of the housing 2, where the locking element 3a Extends beyond the separating seam 7 and engages with the rear of the enlarged step 10 of the cover 4 via the other end portion 3c, or if applicable, catches in the groove 10a formed therein. Combined. The latter is embodied through a rear engagement branch 3d which extends inwardly to be angled or curved, forming an end portion 3c, which end portion 3c is fixed to the rear engagement position by the fixing device 14. .

In the fixing device 14, the rear engagement portion 3d extends in the transverse direction or at a right angle to the separation joint 7, and the intermediate surface of the longitudinal direction of the luminaire 1 with respect to the enlarged shoulder portion 10 ( By elastically biasing inwardly with respect to 15), it can be formed to pull it inwards rather than outwardly. This is achieved by allowing the rear engagement of the end portion 3c to be arranged at a distance a from the longitudinal intermediate surface 15 which is greater than the distance b from the longitudinal intermediate plane 15 of the rear engagement 3b. Thereby, a bias force 16 is provided, which is due to the rear engagement branch 3d which presses the enlarged step portion 10 with the elastic force in the elastically bent state, and the direction of action of the bias force 16 is An acute angle W1 with respect to the longitudinal intermediate surface 15 is achieved. This biasing force causes the shot of the end portion 3b and / or the end portion 3c and / or the enlarged stepped portion 9 in connection with the formation of the locking element 3a which is formed after the outwardly curved stepped portion forming. It may be based on sexual bending.

The locking element 3a is formed by a web 3e extending evenly over its entire length, the thickness of which is denoted by d.

 The hooked end portion 3b of the locking element 3a, which projects toward the free end portion 3c, is held in the pocket 13 by the restraining device 17 against unintended pulling and thereby detachment. May be constrained. This restraining effect may for example be based on the clamping effect acting on the transverse direction to the end part 3b and on the side walls of the pocket 13.

Thus, the fastening of the end portion 3b into the pocket 13 is ensured in the configurations according to the invention, which prevent the inadvertent detachment and loss of the locking element 3a. However, if it is desired to separate the end portion 3b, it is possible to withdraw the end portion 3b from the pocket 13 using increased manual traction or a tool.

The dimension of the transversely extending groove 2b is larger than the thickness of the intermediate web wall 8c, thereby providing a gap c between the inner web wall 8a and the intermediate web wall 8c and the outer web wall 8b. ) And the intermediate web wall 8c is provided. These gaps c, d provide circumferential annular gaps between the web walls 8a, 8b, 8c that are comb-like to each other.

3 and 4, barrier structures are shown which may or may not wish to inhibit or prevent the ingress of moisture from the outside through the separating seam 7.

The first structure is disposed at the overlapping portion between the gap d or the outer web wall 8b and the intermediate web wall 8c, which is formed by the blocking web 19 according to FIGS. 2 and 3, which are two web walls. As projecting transversely toward the opposing web wall from one of 8b and 8c, in this embodiment it projects from the intermediate web wall 8c towards the outer web wall 8b. The blocking web 19 is preferably arranged at the lowest point of the intermediate web wall 8c. It has proved to be particularly desirable to arrange the blocking web 19 at a distance e from the outer web wall 8b, where this dimension represents the assembly position of the housing 2 and the cover 4. The ring height f of the blocking web 19, which extends in parallel with the spacing d, is somewhat smaller than the spacing d, whereby an annular gap or spacing g between the blocking web 19 and the inner surface of the opposing web wall 8b. Is located, which is preferably less than half of the interval d. The shoulder surface of the blocking web 19, which is far from the free edge of the outer web wall 8b, is preferably formed to be inclined toward the free edge of the outer web wall 8b.

In the case of placing the blocking web 19 with the interval e, there is a free space 21 between the blocking web 19 and the free edge of the outer web wall 8b, and in its presence, the web wall 8b The free edge of) forms a drip edge that operates reliably. In addition, there is no capillary tube extending to the edge between the outer web wall 8b and the blocking web 19, whereby the number of sprays occurring in particular at the site of the locking element 3a can be eliminated. .

The inner web wall 8a can be shorter than the outer web wall 8b, which saves material and weight.

In the case of the embodiment according to FIG. 4, the same or similar parts are given the same reference numerals, and two structures which are independent of each other are provided in order to improve resistance to moisture ingress. The second structure is a variant of the first structure according to FIG. 1, in which the blocking web 19a projects from the outer web wall 8b towards the intermediate web wall 8c, not from the intermediate web wall 8c. .

In a variant of the configuration according to FIG. 3-without the combination of the blocking webs 19a for example-the blocking webs 19 protruding from the intermediate web wall 8c, for example, are free as saw blades as in FIG. 4. It can be seen that it can have a cross-sectional shape that narrows towards the end, where the facing side at the free edge of the intermediate web wall 8c protrudes inclined with respect to the longitudinal longitudinal intermediate face 15, while the intermediate web wall The side away from the free edge of 8c protrudes approximately at right angles to the longitudinal longitudinal middle surface 15. This cross-sectional shape and configuration forms a sealing lip shaped blocking web 19, which if it has a length that presses against the web wall facing the free edge-the housing 2 and the cover 4. ) Or when the web walls 8a, 8b, 8c are pressed together, they are elastically bent so as not to interfere with each other and perform their sealing function through their own elastic restoring force.

4 shows by way of example that two blocking webs 19a, 19 can be arranged one after the other and can project from one another to the other from web walls 8b, 8c. Thus an advantageous blocking web 19 can thus be arranged behind the blocking web 19a which does not bend inward and outward, where the latter performs the function of a latch element, for example a smaller It may have a dimension h, which is for example less than half the spacing d.

 The blocking web 19a can thus be formed by non-circumferential latch elements, and a plurality of circumferential sections arranged successively in the circumferential direction, for example a cam arranged successively with circumferential spacings. ), Which may have a round cross-sectional shape or a hemispherical cross-sectional shape as seen for example in FIG. 3.

If the sealing ring D is provided or the second structure is provided, the first chamber 22a is formed in the blocking web 19 of the sealing lip shape using the interval d.

The second structure, which can be provided in combination with the first structure in the embodiment according to FIG. 4, has a tapered surface 23a of the groove 22b, inside the outer web wall 8b, which is an outer web. It is formed by the narrowing interface 23c of the wall 8b, where the intermediate web wall 8c presses the tapered surface 23a at its free edge portion and preferably likewise narrows to its free end ( The tapered surface 23a is supported using 8d) to form a ring seal. If the intermediate web wall 8c is additionally supported on the inner web wall 8a at the inner side, the intermediate web wall 8c, through line-like pressure or acupressure over the free end region region of the intermediate web wall. Sufficient sealing can be obtained.

However, the inner web wall 8a of the tapered surface 23a may also have an opposite tapered surface 23b, which is bounded by the narrowing boundary surface 23d, which is preferably the intermediate web wall 8c. It is also acupressure using the narrowing interface 8e. The interfaces 23c, 23d, 8e, 8d are preferably configured symmetrically about the intermediate axis of the intermediate web wall 8c.

The small spacing i is preferably located between the intermediate web wall 8c and the inner web wall 8a to provide play during assembly or disassembly.

The convergence of the tapered surface 23a may be formed such that the outer web wall 8b extends narrowly, preferably obliquely, throughout the wall portion as shown in FIG. 4.

Through the acupressure of the intermediate web wall 8c against at least one of the tapered surfaces 23a and 23b, a stop is also formed, these parts being in contact with each other at that site when the housing 2 and the cover 4 are fitted together. Acupressure and bound each other with regard to their spacing. However, between the housing 2 and the cover 4 there are also other stops, not shown, which limit the pressure on each other, for example when the sealing ring D which can form such stops is lost. Can be.

In this stop or assembly position, it is more preferable to form the grooves 18 to a depth such that a partial grooved space is formed in front of the intermediate web wall 8c to form the second chamber 22b.

According to the requirements for the sealing quality of the housing 2 of the luminaire at the part of the separating seam 7, at the base of the groove 2b on which the free edge of the intermediate web wall 8c is pressed, a sealing ring, preferably An elastic sealing ring may be selectively disposed, through which the separating joint 7 thus formed is additionally sealed. Similar sealing rings may also be disposed in the second chamber to cooperate with the free edge of the intermediate web wall 8c.

The housing 2 and the cover 4 are preferably made of plastic, in which they are made in one piece together with the respective web walls 8a, 8b and 8c and the blocking web or webs 19, respectively.

Claims (15)

In moisture proof luminaires, A trough housing (2) having an edge groove (18) in the circumferential direction, A transparent cover 4 that engages the opening side of the housing 2, wherein a circumferential edge portion 8c fits into the edge groove 18 of the housing 2 and is distributed over the circumference. A cover 4 detachably connected to the housing 2 by a locking device 3, A connection for the lighting means 6, which is located in the housing 2, The edge part (8c) of the cover (4) is characterized in that it uses the at least one edge edge to pressurize the wall of the groove or the base of the groove. The method according to claim 1, The groove (18) is characterized in that the interior is bounded by the inner web wall (8a) of the housing (2), wherein the interior overlaps with the middle wall area (8c). The method according to claim 1 or 2, The groove (18) is characterized in that it has tapered surfaces (23a, 23b) formed on one or both sides, respectively, by narrowing side portions of the associated web walls (8a, 8b). The method according to claim 3, The free edge of the intermediate edge portion uses the converging interface 8d to pressurize the tapered surface 23a on the outer edge portion 8b and the tapered surface 23d on the inner web wall 8a. Moisture-proof luminaire characterized by the above. The method according to any one of claims 1 to 4, The free space 24 is located in front of the free edge of the middle edge portion 8c between the outer side and the inner edge portion 8a, 8b. The method according to any of the preceding claims, A blocking web 19 is arranged at any one of the two edge portions 8b, 8c in the overlapping region, the blocking web 19 extending towards the other edge portions 8b, 8c. Moisture-proof lighting fixtures. The method according to claim 6, The blocking web (19) is characterized in that it is arranged to have a distance (e) with respect to the free end of the outer edge portion (8b). The method according to claim 6 or 7, Moisture-proof illumination, characterized in that the dimension f of the blocking web 19 extending in the transverse direction of the edge portions 8b, 8c is greater than half the distance d between the edge portions 8b, 8c. Instrument. The method according to any one of claims 6 to 8, The blocking web 19 is formed by a sealing lip, and the sealing lip is moisture-proof characterized in that the sealing side presses the facing side surfaces of the edge portions 8b and 8c facing each other using the free edge. Lighting fixtures. The method according to claim 9, And the sealing lip is configured to narrow toward the free edge thereof. The method according to claim 9 or 10, The sealing lip is characterized in that it is engaged behind the plurality of cams distributed in the second blocking web (19a) or the outer peripheral portion. In the moisture proof lighting fixture 1, A trough housing (2), A transparent cover 4 covering the opening of the housing 2, For lighting means 6, comprising a connection arranged in the housing 2, The housing 2 and the cover 4 overlap edge portions 8b and 8c and are provided with a circumferential blocking web 19, The barrier web (19) is characterized in that it is arranged at one of the two edge regions (8b, 8c) in the overlapping region and extends towards the other edge region (8b, 8c). The method according to claim 12, The barrier web (19) is characterized in that it is arranged to have a distance (e) with respect to the free edge of the outer edge portion (8b). The method according to claim 12 or 13, An edge part (8b) located in the housing (2) forms an outer wall of the groove (18) in the circumferential direction in which the edge part of the cover (4) is fitted. The method according to claim 14, Moisture-proof luminaire, characterized in that the groove (18) is disposed in the circumferential seal (D).

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