EP0268986A2 - Ecran pour lampe - Google Patents

Ecran pour lampe Download PDF

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Publication number
EP0268986A2
EP0268986A2 EP87117006A EP87117006A EP0268986A2 EP 0268986 A2 EP0268986 A2 EP 0268986A2 EP 87117006 A EP87117006 A EP 87117006A EP 87117006 A EP87117006 A EP 87117006A EP 0268986 A2 EP0268986 A2 EP 0268986A2
Authority
EP
European Patent Office
Prior art keywords
transverse
side reflectors
shaped
grid according
luminaire grid
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP87117006A
Other languages
German (de)
English (en)
Other versions
EP0268986A3 (en
EP0268986B1 (fr
Inventor
Manfred Grimm
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Thorn Licht GmbH
Original Assignee
Thorn Licht GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Thorn Licht GmbH filed Critical Thorn Licht GmbH
Priority to AT87117006T priority Critical patent/ATE100923T1/de
Publication of EP0268986A2 publication Critical patent/EP0268986A2/fr
Publication of EP0268986A3 publication Critical patent/EP0268986A3/de
Application granted granted Critical
Publication of EP0268986B1 publication Critical patent/EP0268986B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • 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

Definitions

  • the invention relates to a luminaire grid according to the preamble of claim 1.
  • Such a luminaire grid forms a component of a luminaire, in the housing of which it is inserted.
  • the two side reflectors are connected to each other by the cross slats and the luminaire grid thus forms a self-supporting unit.
  • Luminaires in which such luminaire grids are inserted can be luminaires with fluorescent lamps or luminaires with other lamps. You can straight, preferably have elongated housing. However, they can also have other housings.
  • planar transverse lamellae connect two side webs which are angular in cross-section, in the bending edges of which there are short slots in the planes of the transverse lamellae.
  • the transverse lamellae are provided with incisions adapted to the bending angle of the side webs on the two end faces, and each have a standing tab that serves for the push-through connection with the side webs and secures the connection by twisting.
  • the side bars of this luminaire grid are not particularly suitable because of their angular bends, i.e. side reflectors.
  • the assembly of the lamellae with the side webs requires a relatively long time and also skill, because the lugs of the transverse lamellas inserted through the slots in the side webs have to be rotated after insertion.
  • This twisting of the flaps requires tools and there is also the risk that the side webs can be twisted or damaged by the twisted flaps or that transverse lamellas can get too much play on the side webs.
  • This luminaire grid according to the invention can be assembled extremely quickly and easily by hand from the two side reflectors and the transverse lamellae even without the use of hand tools. To do this, it is only necessary to insert the two side reflectors into a holder holding them at the intended distance from one another, and then one after the other by hand with their lateral hooks and the step-like heels into the V-shaped slots in the cross-slats To insert side reflectors.
  • the individual transverse lamella can be expediently inserted with its area facing away from the apex first by gently squeezing its two legs by hand into the two V-shaped slots in the side reflectors assigned to it until the hooks rest against the slot edges and then pushed The transverse lamella continues to its end position.
  • the transverse lamellae can expediently also be resiliently prestressed in the end positions inserted into the side reflectors by the legs of the transverse lamellae being compressed somewhat.
  • one or more leg areas located between the free cuts of the two hooks of each leg can be resiliently pressed against the longitudinal edges of the relevant V-shaped slots in the side reflectors by the spring action of the spread legs of the respective transverse lamella.
  • each transverse lamella therefore overlap the upper edges of the V-shaped slots of the reflectors on the outside.
  • the lower hooks are spaced from the lower and upper ends of the relevant V-shaped slots.
  • the stepped shoulders of the transverse lamellas can on the narrow lower ends of the relevant V-shaped slots Lying on side reflectors. As a result, these stepped heels positively lock the transverse slats against pulling down and the upper hooks secure them positively against sliding upwards.
  • the lower hooks secure the transverse slats against axial displacement in their longitudinal directions, ie in the direction parallel to their apexes.
  • Each side reflector can preferably be made of sheet metal, as can any transverse lamella.
  • Each side reflector can be a one-piece component, like any transverse lamella.
  • the side reflectors and / or the transverse lamellas can thus be produced from sheet metal as stamped and bent parts, but if desired also from other material, for example from plastic.
  • cross blades although locked in their positions in the side reflectors against unintentional movement or removal by their hooks and the step-like heels, are nevertheless easily removable by hand. Any damaged cross lamella can be exchanged for a new cross lamella at any time.
  • the mutually facing inner surfaces of the side reflectors can preferably be essentially concave in profile, preferably continuously concave. That is in the area of Cross slats cheap for their insertion in the side reflectors and overall also enables particularly favorable optical design of these reflectors.
  • transverse slats are not or only slightly open upwards. This can be achieved in a simple manner in that the free end regions of the two legs of the respective transverse lamella, which extend parallel to the apexes, are angled.
  • each V-shaped slot 16 The lower narrow bottoms or ends 19 of each V-shaped slot 16 are approximately flat and horizontal, whereas the upper, wider edges or ends 20 of the V-shaped slots 16 are narrow, have indentations 21 narrowing obliquely upwards, into which upper hooks 34 of the legs 23 of the relevant transverse lamella 9 are inserted.
  • the individual transverse lamella 9 consists of resilient material, preferably of thin sheet metal, and can advantageously be produced in one piece by stamping and bending.
  • the transverse lamella 9 has a straight apex 24 on the underside, which extends horizontally from side reflector 11 to side reflector 11, and at a short distance above the bottoms of the channels 12.
  • the light exit opening 25 of the light grid 10 is located on the underside thereof and is also the light exit opening a lamp 30 (Fig. 6), in the housing 31 of the lamp grid 10 is inserted.
  • this luminaire 30 has a straight fluorescent lamp 43 as the light source and can preferably be a downward-radiating luminaire, preferably a recessed or surface-mounted luminaire or a luminaire suspended from a ceiling. If necessary, however, it can also be given other orders.
  • To simplify the description of their luminaire grid 10 is in a position in which its Light exit opening 25 is located on the underside.
  • the transverse lamellae 9 are of identical design.
  • the apex 24 of the transverse lamella 9 is curved in the shape of a circular arc and adjoin it by the two legs 23, which are too convexly curved in profile to one another, which are so greatly spread in the relaxed state according to FIG. 3B that their angled upper free end regions 26 towards one another Possibility of overlap (Fig. 4B) offset in height and approximately parallel to one another and are even, have a greater distance from one another than in the position of the transverse lamella 9 inserted in the side reflectors 11, as a comparison of FIGS. 3B and 5B shows, so that the transverse lamellas 9 in are appropriately elastically biased into the state of the side reflectors 11 and hold in the slots 16 without play.
  • each transverse lamella 9 each have a tab 32 which extends over a central longitudinal region of the relevant end face and a step-shaped shoulder 33 at a distance below it above the apex 24, which are provided on the underside of triangular projections 46.
  • Each individual rag 32 forms two hooks 34, 35, of which the upper, the broad end of the transverse lamella 9 facing hook 34 is used for the relevant upper wide transverse edge 20 of the relevant V-shaped slot 16 of the relevant side reflector 11 to the bottom of its free cut 36 or up to this bottom engages in a positive manner in this cutout 36 at its lower end region.
  • Its tongue-forming, freely ending area 44 engages behind the relevant side reflector 11 upwards.
  • the free-ended tongue-like region 39 of the lower hook 35 protrudes downward and, as shown, is curved out of the surface of the leg 23 in question in a direction leading away from the other leg 23 of this transverse lamella 9, so that it projects laterally downwards outwards Tongue 39 of this lower hook 35 engages behind the adjacent longitudinal edge 17 of the slot 16 in question, as can be seen particularly clearly from FIGS. 1 and 5B.
  • the stepped shoulder 33 of each leg 23 of the transverse lamella 9 lies on the narrow bottom 19 of the V-shaped slot 16 in question Side reflector 11 on.
  • the vertical longitudinal center plane S of the luminaire grid 10 which here is perpendicular to the image plane, is shown in dash-dotted lines. Since this longitudinal center plane is a plane of symmetry of the luminaire grid 10, only one side reflector 11 and a region of the transverse lamella 9 adjacent to it are shown in FIGS. 3A, 4A and 5A in order to simplify the drawing.
  • 3A and 3B show the transverse lamella 9 still at a distance below the side reflectors 11.
  • only one side reflector 11 is shown for the sake of simplicity because of the existing symmetry, so that the other side reflector located to the right of the plane of symmetry S is shown 11 and the corresponding extension of the transverse lamella 9 can be easily imagined.
  • the longitudinal center plane S is also a plane of symmetry of the transverse lamella 9.
  • FIG. 3B is a partial side view of the side reflector 11 of FIG. 3A and the transverse lamella 9 in a corresponding end view shown.
  • the free tongues 44, 39 of the hooks 34, 35 are each shown fully drawn out for better identification, whereas the other lateral areas of the transverse lamella 9 are represented by double lines.
  • transverse lamellae 9 For manual insertion of the transverse lamellae 9 into the two side reflectors 11, the latter are inserted into a holding device, not shown, which holds them in their intended relative position to one another for the insertion of the transverse lamellae 9.
  • Each transverse lamella 9 is then compressed somewhat by hand and, according to FIGS. 3A, 3B, is inserted from below between the two side reflectors 11.
  • the holding device for the side reflectors can also be arranged in such a way that the side reflectors 11 are arranged upside down, that is to say with their light exit opening directed upward, that is to say rotated through 180 ° to the position shown in FIG. 3 of a side reflector.
  • the total of four step-shaped shoulders 33 reach the both ends of the transverse lamella 9 on the bottoms 19 of the slots 16 in question, so that the transverse lamella is locked by the upper hooks 34 and the stepped shoulders 33 against displacement both in the upward direction and in the downward direction.
  • the cross lamella 9 lies with its areas of the tabs 32 located between the free cuts 36, 37 of the hooks 34, 35 on the longitudinal edges 17 of the slots 16 and with its edge areas 40 of the leg end faces located above the bottoms of the cutouts 36 of the upper hooks 34 of the leg ends Inner surfaces 13 of the side reflectors 11 form-fittingly above the relevant slots 16, as shown particularly clearly in FIGS. 5A and 5B.
  • Transverse lamella 9 is thereby positively locked overall against displacement in any direction and is in a form-fitting manner with lateral leg end regions on the Inner surfaces 13 of the side reflectors.
  • the resilient bias of each transverse lamella 9, with which its tabs 32 abut the longitudinal edges 17 of the slots 16 in question, ensures that the transverse lamella 9 is held in the side reflectors 11 without play.
  • the transverse lamellae 9 hold the side reflectors together without play, so that a very stable, play-free assembly of the lamp grid 10 can be carried out quickly and easily manually without the use of hand tools, which even inexperienced persons can easily carry out.
  • the concave inner surfaces 13 of the side reflectors can also be designed according to optically favorable aspects. The production of the luminaire grid 10 is inexpensive and it has a simple design.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Finger-Pressure Massage (AREA)
  • Securing Globes, Refractors, Reflectors Or The Like (AREA)
  • Toys (AREA)
  • Light Sources And Details Of Projection-Printing Devices (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)
  • Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)
EP87117006A 1986-11-24 1987-11-18 Ecran pour lampe Expired - Lifetime EP0268986B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87117006T ATE100923T1 (de) 1986-11-24 1987-11-18 Leuchtenraster.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8631398U 1986-11-24
DE8631398 1986-11-24

Publications (3)

Publication Number Publication Date
EP0268986A2 true EP0268986A2 (fr) 1988-06-01
EP0268986A3 EP0268986A3 (en) 1990-03-07
EP0268986B1 EP0268986B1 (fr) 1994-01-26

Family

ID=6800477

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87117006A Expired - Lifetime EP0268986B1 (fr) 1986-11-24 1987-11-18 Ecran pour lampe

Country Status (4)

Country Link
EP (1) EP0268986B1 (fr)
AT (1) ATE100923T1 (fr)
DE (2) DE8715276U1 (fr)
ES (1) ES2050660T3 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991005203A1 (fr) * 1989-10-03 1991-04-18 Zumtobel Ag Ecran paralume
DE4432931A1 (de) * 1994-09-15 1996-03-21 Siemens Ag Leuchtenraster

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29613948U1 (de) * 1996-08-12 1997-12-11 Zumtobel Licht Leuchte mit mindestens einer Lampe, einem Reflektor und einem Rasterreflektor

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7441175U (de) * 1975-06-19 Licentia Patent Verwaltungs Gmbh Lamellenraster für Leuchten
DE2648961A1 (de) * 1976-10-28 1977-11-03 Trilux Lenze Gmbh & Co Kg Rasterabdeckung mit im wesentlichen ebenen gekreuzten lamellen fuer langgestreckte leuchtstofflampen
DE3005762A1 (de) * 1980-02-15 1981-08-20 Siemens AG, 1000 Berlin und 8000 München Leuchtenraster mit gekruemmten aussenreflektoren
DE3034892A1 (de) * 1980-09-16 1982-04-01 Siemens AG, 1000 Berlin und 8000 München Leuchtenraster mit aussenreflektoren
DE3215026A1 (de) * 1982-04-22 1984-03-15 Thorn Emi Beleuchtungsgesellschaft mbH, 5760 Arnsberg Leuchte
DE3239692A1 (de) * 1982-10-27 1984-05-03 Trilux-Lenze Gmbh + Co Kg, 5760 Arnsberg Leuchtenraster
FR2542848A1 (fr) * 1983-03-18 1984-09-21 Trilux Lenze Gmbh & Co Kg Paralume pour lampe de forme allongee
DE3440028A1 (de) * 1983-11-03 1985-05-15 Sabir S.A., Belleville-sur-Saone, Rhône Blendschutzvorrichtung fuer leuchtkoerper mit linearer lichtquelle
DE3437192A1 (de) * 1984-10-10 1986-04-10 Philips Patentverwaltung Gmbh, 2000 Hamburg Leuchte mit veraenderbarer lichtverteilung

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7441175U (de) * 1975-06-19 Licentia Patent Verwaltungs Gmbh Lamellenraster für Leuchten
DE2648961A1 (de) * 1976-10-28 1977-11-03 Trilux Lenze Gmbh & Co Kg Rasterabdeckung mit im wesentlichen ebenen gekreuzten lamellen fuer langgestreckte leuchtstofflampen
DE3005762A1 (de) * 1980-02-15 1981-08-20 Siemens AG, 1000 Berlin und 8000 München Leuchtenraster mit gekruemmten aussenreflektoren
DE3034892A1 (de) * 1980-09-16 1982-04-01 Siemens AG, 1000 Berlin und 8000 München Leuchtenraster mit aussenreflektoren
DE3215026A1 (de) * 1982-04-22 1984-03-15 Thorn Emi Beleuchtungsgesellschaft mbH, 5760 Arnsberg Leuchte
DE3239692A1 (de) * 1982-10-27 1984-05-03 Trilux-Lenze Gmbh + Co Kg, 5760 Arnsberg Leuchtenraster
FR2542848A1 (fr) * 1983-03-18 1984-09-21 Trilux Lenze Gmbh & Co Kg Paralume pour lampe de forme allongee
DE3440028A1 (de) * 1983-11-03 1985-05-15 Sabir S.A., Belleville-sur-Saone, Rhône Blendschutzvorrichtung fuer leuchtkoerper mit linearer lichtquelle
DE3437192A1 (de) * 1984-10-10 1986-04-10 Philips Patentverwaltung Gmbh, 2000 Hamburg Leuchte mit veraenderbarer lichtverteilung

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991005203A1 (fr) * 1989-10-03 1991-04-18 Zumtobel Ag Ecran paralume
US5264999A (en) * 1989-10-03 1993-11-23 Zumtobel Ag Light screen
DE4432931A1 (de) * 1994-09-15 1996-03-21 Siemens Ag Leuchtenraster

Also Published As

Publication number Publication date
DE8715276U1 (fr) 1988-03-24
ATE100923T1 (de) 1994-02-15
ES2050660T3 (es) 1994-06-01
EP0268986A3 (en) 1990-03-07
EP0268986B1 (fr) 1994-01-26
DE3788934D1 (de) 1994-03-10

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