Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F21—LIGHTING
  • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
  • F21V17/00—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
  • F21V17/10—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening
  • F21V17/16—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening by deformation of parts; Snap action mounting
  • F21V17/164—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening by deformation of parts; Snap action mounting the parts being subjected to bending, e.g. snap joints
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F21—LIGHTING
  • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
  • F21Y2103/00—Elongate light sources, e.g. fluorescent tubes

Definitions

• the invention relates to a lamp according to the preamble of claim 1 or 13.
• a lamp of this type is formed with a housing consisting of two parts, one part of which is a trough-shaped housing, the fastening elements for attachment to a carrier, for. B. a wall or a ceiling, and the other part is formed by an at least partially transparent cover, which is detachably connected by closure elements to the trough-shaped housing.
• a lamp can be mechanically and electrically connected, the light emitted during operation emits through the transparent cover for room lighting.
• a lamp of this type is e.g. B. described in EP 0 785 391 A1.
• C-shaped closure elements which are designed as separate components, and of which one end region of the C-shape engages with a locking leg in a pocket-shaped undercut on the trough-shaped housing, over the Gap extends between the trough-shaped housing and the cover and extends with its other end region of the C-shape behind an edge of the cover with a certain tension and thereby compresses the trough-shaped housing and the cover with a certain elastic clamping tension.
• the formation of the closure elements as separate components makes their manufacture easier, in particular with regard to their complicated construction, but this has the disadvantage that the closure elements have to be provided and handled as separate components on the one hand and can be lost on the other.
• Another disadvantage of the known lamp is due to the complicated construction of the closure elements, especially in the pocket-shaped Undercuts the end regions enclosing the trough-shaped housing.
• a locking leg is arranged in the known lamp, which extends obliquely in the mounting direction in the pocket-shaped undercut, in which the associated end region of the C-shape engages behind the trough-shaped housing. Due to this oblique extension of the locking leg, a special shape is required in order to be able to insert the locking leg into the pocket-shaped undercut. There is also the risk that the locking leg is overpressed beyond its dead center.
• the invention has for its object to improve and simplify a lamp of the type specified with regard to securing the end region in the pocket.
• the aim is not only to ensure a small number of components, but also to find simple shapes that facilitate or enable inexpensive manufacture, assembly, captivity of the closure elements and / or manufacture from a thermoset.
• the locking leg forms an obtuse angle with the end region, which is open towards the end of the end region.
• the locking leg is moved into a clamping position that prevents assembly due to its elastic contact with the wall area of the pocket and due to friction occurring during an unwanted disassembly.
• the locking leg can be rigid or bendable, or have a clamping edge that increases the friction, or can be designed as a clamping eccentric. Due to the extension of the locking leg according to the invention, it is able to exert a latching or jamming blocking effect, which secures the closure part in question against unintentional disassembly.
• the design is preferably such that disassembly is not possible without special aids and therefore loss of the closure element or elements is effectively prevented.
• the free end of the locking leg can serve as a locking element or clamping element, which automatically moves into its release position during assembly is displaced elastically and, due to the elasticity, automatically brings about the clamping or latching locking.
• the end area is shaped such that it forms a three-point system with the two wall areas. This ensures a stable positioning of the end region in the pocket, which, taking into account the clamping action against the wall regions of the pocket, enables a stable fit of the end region in the pocket and, due to the clamping effect and the resulting frictional engagement, also the desired securing of the end region in the pocket guaranteed. Due to the lateral recess, the shape formed in its relaxed position larger than the pocket width can be elastically compressed when inserted into the pocket, so that easy-to-use assembly is achieved by inserting it into the pocket.
• An angular recess with two spaced apart base points at which the end region bears against one wall region of the pocket and an apex arranged in between, at which the end region bears against the opposite wall region of the pocket, results in a simple shape, which is preferably formed by angular legs is.
• Figure 1 shows a lamp according to the invention in perspective bottom view.
• Figure 2 shows the left half of the lamp in vertical cross section and in an enlarged view.
• Figure 3 shows an upper closure area of the lamp with a closure element according to the invention in cross section in a modified embodiment and in an enlarged view.
• Figure 4 shows the closure element in a perspective interior view.
• Fig. 5 shows a closure element according to the invention in a further modified
• FIG. 6 shows the closure element according to FIG. 5 in its assembled position
• Fig. 7 a closure element according to the invention in a further modified
• the main parts of the lamp designated in its entirety by 1 in FIG. 1 are a trough-shaped housing 2, a cover 4 releasably connected to it by a plurality of closure devices 3 arranged around the circumference, and a cover 4 in the cavity 5 between the trough-shaped housing 2 and the cover 4 arranged lamp 6, which is connected and held to at least one mechanical and electrical connection element.
• the embodiment is a moisture-proof luminaire that fulfills special protection requirements in this regard, e.g. B. against the ingress of splash water and. a. is splash-proof in the area of the dividing line 7 between the trough-shaped housing 2 and the cover 4.
• This protection can be formed in the region of the dividing joint 7 by webs 8a, 8b, 8c which engage in one another like a comb and extend circumferentially in the circumferential direction and form a labyrinth which offers protection against the ingress of splash water.
• the trough-shaped housing wall 2a branches in its free edge region to two wall webs 8a, 8b, which have a transverse spacing from one another which is greater than a wall web 8c enclosing between the wall webs 8a, 8b, which crosswise to the dividing joint 7 from that e.g. B. protrudes trough-shaped or dome-shaped cover wall 4a.
• the division joint 7 is preferably sealed in addition to the labyrinth by an annular seal which has a sealing ring D which, for. B. is arranged in the bottom of the existing between the wall webs 8a, 8b circumferential groove 2b, and against which the wall web 8c presses.
• the sealing ring D is made of soft material, e.g. B. from a foam tape.
• the outer wall web 8a of the housing wall 2a is part of a widening step 9 in the free edge region of the housing wall 2a.
• the housing wall 2a has on its one carrier, for. B. a ceiling or wall of a room, facing plant side 11 fasteners 12, which are used for attachment to the carrier.
• the lamp 1 has an elongated and straight shape, the length L1 of which is a multiple of its width B.
• the trough-shaped housing 2 and the cover 4 are also shaped accordingly. This consists at least in its dome area facing away from the housing 2 or in the exemplary embodiment as a whole from a transparent material, for. B. glass or plastic through which the light of the lamp 6 in the main emission direction S but also radiates to the sides.
• the housing 2 consists of plastic, in particular a thermoset.
• the closure device 3 has a closure element 3a in a basically C-shaped longitudinal cross-sectional shape, the end regions of which are designated 3b, 3c, which engages behind the trough-shaped housing 2 with its upper end region 3b and at the same time in a recess, in particular a pocket 13, engages in the housing 2, which is open to the side facing away from the division joint 7, and is adapted to the size of the end region 3b with play with two opposing pocket walls 13a, 13b, which extend approximately parallel to the longitudinal center plane 15.
• the recess or pocket 13 can extend in the longitudinal direction of the lamp 1 in each case only over a section or continuously.
• the closure element 3a extends from the end region 3b essentially in a shape adapted to the associated outer shape of the housing 2 on the outside Luminaire housing towards the cover 4, whereby it extends beyond the division joint 7 and, with the associated end region 3c, engages behind a widening step 10 on the cover 4, optionally latching into a recess 10a formed thereon.
• the latter is carried out with a rear gripping leg 3d, which extends inwards in an angular or curved manner and forms the end region 3c and is secured in its rear gripping position by a securing device 14.
• the securing device 14 can be formed in that the rear gripping leg 3d is elastically prestressed obliquely inwards against the widening shoulder 10 with respect to the longitudinal center plane 15 of the lamp 1 extending transversely or at right angles to the dividing joint 7, so that this tension forces it inwards and not outwards pulls.
• This is achieved in that the rear grip of the end region 3c is arranged at a distance a from the longitudinal central plane IS, which is greater than the distance b of the rear grip of the end region 3b from the longitudinal central plane 15 elastic tension at the widening step 10 of the rear gripping legs 3d a clamping force 16, the effective direction of which includes an acute angle W1 with the longitudinal center plane 15.
• This tensioning force can be based on an elastic bending of the end region 3b and / or the end region 3c and / or the shape of the closure element 3a which follows the widened step 9 with respect to the step shape and is bent out.
• the closure element 3a is formed by a web 3e extending flatly over its entire length, the thickness of which is denoted by d.
• the end region 3b of the closure element 3a projecting in a hook shape towards the free end region 3c is locked by a locking device 17 in the pocket 13 against unwanted pulling out and thus loosening.
• a locking device 17 there are several exemplary embodiments for such a locking.
• the end region 3b is realized by at least one wave-shaped shape 18 of the web section 3f forming the end region 3b, which is directed transversely to the central axis 13c of the pocket 13.
• the formation 18 can be formed with two angle legs 18a, 18b, which enclose an angle W2, which is preferably obtuse.
• the dimension of the formation 18 directed transversely to the pocket 13 is larger than the associated transverse dimension c of the pocket 13.
• Angle legs 18a, 18b are so large that the shape 18 can be elastically compressed when the end region 3b is inserted or mounted in the pocket 13 by a compressive force that can be manually applied and directed into the pocket 13, the shape being in the inserted position of the end region 3b 18 bear at three base and apex lines 22a, 22b, 22c on the mutually opposite walls 13a, 13b of the pocket 13 with elastic spreading force Pl, P2, P3, namely at 22a and 22c at the beginning and at the free end of the formation 18 and at 22b in the region of the apex of the formation 18, which is located between the contact points 22a, 22c with regard to the clamping force of the three-point system generated by the elastic springback of the formation 18 and acting against the walls of the pocket 13.
• the transitions of the formation 18 or the angle legs 18a, 18b are advantageous to make the transitions of the formation 18 or the angle legs 18a, 18b rounded.
• the shaped web section 3f slides advantageously when it is pressed in and pulled out of the pocket 13 on its walls 13a, 13b, as a result of which the required pressing force can be kept low.
• the rounding at the free end of the angle leg 18b can be formed by a rounded bend with a leg stump 18c.
• the configurations of the closure elements 3a and the housing 2 are characterized by simple shapes which are also suitable for production from a thermoset.
• the end region 3b of the closure element 3a is optionally locked in the pocket 13 by at least one locking leg 17a, which projects laterally from the end region 3b, in addition to the locking described above , can be elastically extended and compressed and includes an obtuse angle W3 with the end region 3b or its longitudinal central axis 3g, which is open to the free end of the end region 3b and thus also to the base of the pocket 13.
• the angle W3 is approximately 92 ° to approximately 100 °, the length L2 of the locking leg 17a being dimensioned so long that when the end region 3b is inserted into the pocket 13, it springs in on the side wall 13a opposite it and thus acts on a rebound the side wall 13a abuts.
• the locking leg 17a exerts a blocking action against pulling the end region 3b out of the pocket 13, which is predetermined by the fact that the locking leg 17a is further bent out when the end region 3b is pulled out due to the static friction on the side wall 13a and thereby blocks the pull-out movement .
• the locking leg 17a can extend with respect to its width c parallel to the dividing joint over the entire width e of the closure web 3f or only over a part of this width e .
• a plurality of locking legs 17a can also be arranged in the width and / or longitudinal direction of the closure element 3a, e.g. B. two pieces of locking leg 17a, z. B. on the opposite edges of the end portion 3b or web 3f (Fig. 4).
• the closure element 3a can also consist of metal, in particular corrosion-resistant metal such as stainless steel or spring steel, or plastic. In all configurations, it is advantageous to form the locking leg 17a in one piece at the end region 3b. This can be done in a plastic closure element 3a by injection molding or in a metal closure element 3a by bending a tongue forming the locking leg 17a, the z. B. is cut free from the rest of the end portion 3b by a cut 3h.
• the end region 3b can be a section of the closure element 3a which extends straight into the pocket 13. If the end region 3b according to the exemplary embodiment according to FIGS. 2 to 4 is formed by the wave-shaped shape 18, it is advantageous to arrange the at least one locking leg 17a on one of the two angle legs 18a, 18b, e.g. B. in the apex area, as shown by the embodiments of FIGS. 3 and 4.
• FIGS. S and 6 show, by way of example, one or more locking legs 17a arranged one above the other, which, for. B. extend over the entire width ⁇ of the closure element 3a or end portion 3b.
• Such an embodiment is particularly well suited for closure elements 3a which are made of plastic, the locking leg (s) 17a being able to be formed in one piece during the injection molding process.
• one or more locking legs 17a are or are arranged on a web 3f which extends approximately in the form of a straight line and which preferably lies essentially flat on the wall region 13b facing it, and which has a convergent, e.g. B. have a wedge-shaped cross section.
• the effective length of the at least one locking leg 17a, measured over the thickness of the web 3f, is somewhat larger than the width c of the pocket 13, so that the locking leg 17a bends slightly upward in the inserted state and due to its contact with the wall area 13a when it is pulled out of the end region 3b exerts the desired locking effect which results from the frictional engagement between the wall region 13a and the end of the locking leg 17a.
• FIGS. 7 and 8 A similar embodiment is also shown in FIGS. 7 and 8, but with the difference that the at least one locking leg 17a can be pivoted in elastically, but does not have to, which is the case if it is also connected to the through a thin film hinge 21 preferably straight web 3f is connected.
• the cross-sectional size widening on both sides towards the central region of the locking leg 17a is designed such that when the end region 3b is pulled out, the at least one locking leg 17a is rotated and, due to its eccentric shape, brings about the transverse clamping action of the locking leg 17a against the wall region 13a. As a result, the web 3f is pressed and clamped against the opposite wall region 13a.
• a securing of the end region 3b in the pocket 13 is ensured, which prevents the closure element 3a from being accidentally released and lost.
• FIG. B. it is possible in the exemplary embodiment according to FIG. B. with a tool, applied increased tensile force to pull the end portion 3b out of the pocket 13.
• FIG. 3 and following preferably by means of a elastic bending of the locking leg or 17a in the release position, for. B. using a tool to pull the end portion 3b out of the pocket 13.

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• 2005
  • 2005-12-09 DE DE102005058959A patent/DE102005058959A1/de not_active Withdrawn
• 2006
  • 2006-10-11 EP EP06792418A patent/EP1957860B1/fr active Active
  • 2006-10-11 AT AT06792418T patent/ATE491913T1/de active
  • 2006-10-11 WO PCT/EP2006/009824 patent/WO2007065497A1/fr active Application Filing
  • 2006-10-11 EP EP09177016A patent/EP2151624B1/fr active Active
  • 2006-10-11 DE DE502006008534T patent/DE502006008534D1/de active Active
  • 2006-10-11 CN CN2006800459853A patent/CN101326403B/zh not_active Expired - Fee Related
• 2008
  • 2008-06-09 KR KR1020087013772A patent/KR101265376B1/ko not_active IP Right Cessation

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