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
  • F21V13/00—Producing particular characteristics or distribution of the light emitted by means of a combination of elements specified in two or more of main groups F21V1/00 - F21V11/00
  • F21V13/02—Combinations of only two kinds of elements
  • F21V13/10—Combinations of only two kinds of elements the elements being reflectors and screens
• • 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
  • F21V11/00—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00
  • F21V11/02—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00 using parallel laminae or strips, e.g. of Venetian-blind type
• • 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

Definitions

• the present invention relates to a light grid for an elongated light, the side reflectors of which each have an inner wall and an outer wall.
• a common -Light grid consists of two elongated side reflectors and several transverse reflectors arranged transversely to them, the so-called cross blades.
• the end faces of the transverse slats are each attached to the side reflectors, which is done, for example, by latching.
• the side reflectors have corresponding openings in which parts of the end faces of the slats engage.
• a side reflector is formed by two separate parts, which form the inner and outer walls and each engage in a latching manner on their long sides.
• Such a structure is relatively complex and requires an additional step in the assembly of the grid.
• the present invention is therefore based on the object of specifying a light grid with double-walled side reflectors, which can be assembled in a simple manner.
• a simple attachment of the light grid to the light is to be made possible.
• the object is achieved by a light grid which has the features of claim 1.
• the inner and outer walls of a side reflector merge into one another in one piece.
• a side reflector is no longer formed from two separate parts that have to be put together. Instead, a single appropriately shaped sheet metal part is used, which is brought into an essentially N-like structure. On the one hand, this increases the stability of the side reflectors, on the other hand, the structure and assembly of the luminaire grid is simplified.
• the one-piece transition area - as seen in the cross section of the luminaire grid - is preferably located at the end of the inner and outer wall opposite the luminaire.
• a side reflector is preferably first prefabricated in a form in which the later inner and outer walls are still V-shaped apart. This allows the cross slats to be attached to the inner wall by hand. After the assembly of the transverse lamellae, the two walls are then pressed against one another so that they form adjacent edge regions at their ends opposite the transition region. The inside and outside walls can then be held in the appropriate shape with the aid of an appropriately designed clamp element that engages over these edge areas.
• the clamp element additionally also has fastening means with which the light grid can be fastened to a light.
• the clamp element is preferably essentially U-shaped, the fastening means being formed by a latching lug protruding from the U-shaped contour.
• a particularly preferred structure of the clamp element is that it has a first side wall in which at least one first recess is provided.
• the clamp element has a second side wall, which is oriented towards the first side wall in a first section and is bent away from the first side wall in a second section, at least one further recess being provided in the region of the bending edge between the first and the second section , which has a pointed shoulder, which extends into the region of the first recess of the first side wall in continuation of the alignment of the second section.
• Two such clamp elements are preferably provided in order to hold the inner and outer walls of a side reflector together.
• the transverse slats are preferably attached to the inner walls of the side reflectors by latching.
• the transverse lamellae can in particular be made in one piece and approximately V-shaped in cross-section, with tabs being formed on their end faces, which have cam-like projections and engage in correspondingly shaped recesses in the inner walls.
• the recesses in the inner walls of the side reflectors then have approximately the shape of an isosceles triangle, the recesses each being continued as a slot at the end of the triangle legs of the same length and the upper edges of the tabs of the transverse lamellae being held in these slots with a precise fit.
• V-shaped transverse lamellae described above there is also the possibility of forming them from a sheet metal strip which is ribbed on both sides.
• the present invention also relates to a luminaire grid for an elongated luminaire, which consists of two elongated side reflectors and a plurality of transverse slats, the side reflectors each having an inner wall and an outer wall and the luminaire grid being characterized by at least one clamp element which adjoining edge regions of the inner and outer walls of a side reflector overlaps and holds together and also has fastening means for fastening the luminaire grid to a luminaire.
• Fig. 1 shows an embodiment of the light grid according to the invention in a perspective view
• FIG. 2 the luminaire grid shown in FIG. 1 without transverse slats
• Fig. 3 is a single transverse lamella of the one shown in Figs. 1 and 2
• Figure 4 shows the lamp grid in section.
• F Fiigg .. 5 5aa the arrangement of the inner and outer wall of a side reflector in front of the
• 5b shows the arrangement of the inner and outer wall in the assembled state
• 5c shows an enlarged detail A from FIG. 4b
• FIG. 6-9 different views of a bracket element; and F Fiigg .. 1 100 the attachment of the luminaire grid to a luminaire in section.
• the basic structure of the elongated light grid 1 shown in FIG. 1 is formed by two elongated side reflectors 2, which are connected to one another via a series of transverse slats 10.
• the grid 1 is made up of two end walls on its two end faces completed, but their representation has been omitted in the present drawing for a better explanation of the arrangement of the transverse lamellae 10.
• the side reflectors 2 are each double-walled with an inner wall 3 and an outer wall 4, the transverse lamellae 10 being locked with their end regions in each case with the two inner walls 3 of the side reflectors 2.
• a cavity 6 is formed, into which the fastening tabs arranged on the end faces of the transverse slats 10 engage.
• the special feature of the light grid according to the invention consists in the one-piece design of the side reflectors 2. These consist of a single sheet metal part which has been bent into the V-shaped structure shown. At their ends opposite the one-piece transition 5 of the V-shape, the inner and outer walls 3 and 4 each have adjacent edge regions 3a and 4a. The two walls 3 and 4 of a side reflector 2 are held in the form shown by a clamp element 15 which overlaps these edge regions 3a, 4a. The exact design of the bracket element 15 will be explained in detail later.
• transverse lamellae are designed in a known manner in a V-shape and are closed at the top by so-called flanges.
• a correspondingly designed transverse lamella 10 is shown in a side view in FIG. 3. It has two tabs 11 on each of its two end faces, which additionally have a plurality of nub-like projections 12. These projections 12 can be obtained by appropriate stampings.
• the recesses 7 provided on the inner walls 3 of the side reflectors 2 for locking with the transverse slats 10 are shown in FIG. 2.
• the recesses 7 are roughly triangular in shape with the tip downward in accordance with the V-shape of the transverse lamellae.
• the slots 8 form a guide and a backing for the upper sides of the tabs 11 and have the task of preventing the tabs 11 from moving inward at a corresponding pressure.
• the locking of the transverse slats 10 with the side walls 3 is additionally improved by the knob-like projections 12, which each claw behind the recesses 7 in the inner walls 3, as is e.g. is shown in Fig. 4 ..
• the one-piece design of the two side reflectors 2 brings with it certain problems when installing the transverse slats.
• it is namely necessary to provide a corresponding resistance to the mounting pressure of the transverse slats.
• This is difficult with a double-walled side reflector in that the back pressure cannot be exerted on the outer side part. This would have the consequence that the outer wall bears against the end face of the transverse lamella to be inserted and prevents its penetration into the opening of the inner wall.
• the side reflectors are first prefabricated in a form in which they are still V-shaped with a relatively large opening angle.
• a structure is shown in Fig. 5a.
• the inner wall 3 and outer wall 4 are at an angle of at least 30 ° apart. This makes it possible to apply the counterpressure to the corresponding inner side of the inner wall 3 when the transverse slats are assembled by hand until the transverse slat is locked into its opening in the inner wall 3. In this way, all cross blades are assembled one after the other.
• the clip element shown in FIGS. 6 to 9 is U-shaped or hairpin-shaped in section. It initially has a first straight side wall 16 with two first recesses 16a.
• the opposing second side wall 17 is divided into a first section 17a, which is oriented towards the first side wall 16, and a second section 17b, which is bent away from the first side wall 16.
• a bending edge 17e is thus formed between the first section 17a and the second section 17b.
• two further recesses are provided in the region of the bending edge 17e, each of which has a pointed shoulder 17d which, as the second section 17b continues, projects into the region of the first recess 16a of the first side wall 16.
• the two projections 17d thus, in cooperation with the bending edge 17e and the first side wall 16, cause the clamping element 15 to be clamped on the two upper edges 3a, 4b of the side walls 3, 4 of the side reflector, as shown in FIGS. 5b and 5c.
• a latching nose 17c projecting from the U-shaped contour of the clamp element is formed in the form of a straight projection.
• this latching nose 17c serves for fastening the light grid 1 to a light housing.
• the detent 17c can also be bent back at its front end and thus be curved. It is essential that the clamp element 15 is made of a material that is permanently resilient and has a high resistance to deformation, so that a secure attachment of the grid to the lamp housing is ensured.
• FIG. 10 finally shows the fastening of the light grid 1 according to the invention to a light housing 20.
• This has a C-shape which is open at the bottom and can be formed, for example, by a mounting rail of a busbar system.
• the electronic components of the lamp for example an electronic ballast 26 and corresponding conductor wires 28 which run in a current conducting profile 27, are arranged inside the housing 20, which is essentially formed from two side walls 21 and a bottom wall 22, the electronic components of the lamp, for example an electronic ballast 26 and corresponding conductor wires 28 which run in a current conducting profile 27, are arranged.
• the lamp holder 24 is fastened with the aid of two clamping webs 25 which engage with corresponding projections 23 on the inner sides of the side walls 21.
• the two side walls 21 of the lamp housing 20 each further have an elongated recess 22, into which the latching lugs 17c of the clamp elements 15 can engage.
• the fully assembled lamp grid 1 can thus be easily clamped to the underside of the lamp housing 20.
• the present invention thus provides a luminaire grid which has a smooth outer surface due to the double-walled design of the side reflectors.
• the grid according to the invention is characterized in particular by its simple and inexpensive structure, it also being possible to simply fasten the grid to a lamp.

Landscapes

• Engineering & Computer Science (AREA)
• General Engineering & Computer Science (AREA)
• Securing Globes, Refractors, Reflectors Or The Like (AREA)
• Optical Elements Other Than Lenses (AREA)
• Non-Portable Lighting Devices Or Systems Thereof (AREA)
• Road Signs Or Road Markings (AREA)
• Aerials With Secondary Devices (AREA)

Applications Claiming Priority (3)

Publications (2)

Family

ID=29285432

Family Applications (1)

Country Status (7)

Families Citing this family (5)

Family Cites Families (11)

• 2002
  • 2002-05-15 DE DE10221630A patent/DE10221630A1/de not_active Withdrawn
• 2003
  • 2003-04-15 WO PCT/EP2003/003938 patent/WO2003098101A1/fr active IP Right Grant
  • 2003-04-15 DE DE50304578T patent/DE50304578D1/de not_active Expired - Lifetime
  • 2003-04-15 AT AT03725035T patent/ATE335961T1/de active
  • 2003-04-15 ES ES03725035T patent/ES2271579T3/es not_active Expired - Lifetime
  • 2003-04-15 EP EP03725035A patent/EP1504216B1/fr not_active Expired - Lifetime
  • 2003-04-15 AU AU2003227629A patent/AU2003227629A1/en not_active Abandoned
• 2004
  • 2004-11-12 US US10/986,009 patent/US6966672B2/en not_active Expired - Fee Related

Non-Patent Citations (1)

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