EP1586818B1 - Luminaire - Google Patents

Luminaire Download PDF

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Publication number
EP1586818B1
EP1586818B1 EP05008108A EP05008108A EP1586818B1 EP 1586818 B1 EP1586818 B1 EP 1586818B1 EP 05008108 A EP05008108 A EP 05008108A EP 05008108 A EP05008108 A EP 05008108A EP 1586818 B1 EP1586818 B1 EP 1586818B1
Authority
EP
European Patent Office
Prior art keywords
prism
cover
luminaire
luminaire according
prism cover
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.)
Not-in-force
Application number
EP05008108A
Other languages
German (de)
English (en)
Other versions
EP1586818A2 (fr
EP1586818A3 (fr
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.)
Trilux GmbH and Co KG
Original Assignee
Trilux GmbH and Co KG
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 Trilux GmbH and Co KG filed Critical Trilux GmbH and Co KG
Publication of EP1586818A2 publication Critical patent/EP1586818A2/fr
Publication of EP1586818A3 publication Critical patent/EP1586818A3/fr
Application granted granted Critical
Publication of EP1586818B1 publication Critical patent/EP1586818B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F21V5/00—Refractors for light sources
    • F21V5/02—Refractors for light sources of prismatic shape
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S8/00—Lighting devices intended for fixed installation
    • F21S8/04—Lighting devices intended for fixed installation intended only for mounting on a ceiling or the like overhead structures
    • F21S8/06—Lighting devices intended for fixed installation intended only for mounting on a ceiling or the like overhead structures by suspension
    • 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
    • F21V7/00—Reflectors for light sources
    • F21V7/0008—Reflectors for light sources providing for indirect lighting
    • F21V7/0016—Reflectors for light sources providing for indirect lighting on lighting devices that also provide for direct lighting, e.g. by means of independent light sources, by splitting of the light beam, by switching between both lighting modes
    • 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 present invention relates to a luminaire with a light component radiated directly toward the underside and an indirect light component radiated toward the upper side, comprising at least one luminous means aligned in the longitudinal direction of the housing and at least one prism cover below the luminous means.
  • Luminaires in which prism covers are used which are arranged below the luminous means have been known for some time from the prior art.
  • the use of a kind of prism cover for the downwardly radiated light component in a so-called direct / indirect light is also known and is for example in the utility model DE 299 03 298 U1 described.
  • This is a comparatively flat luminaire, which radiates an indirect light component, which contributes to the general brightening of the room, as a suspension lamp suspended from the ceiling. With the light component radiated directly from the luminaire to the underside, it is important in the case of such a suspended luminaire that good glare reduction be provided.
  • a standard luminaire for illuminating, for example, office space should have a glare of those light components that emerge at angles from the luminaire, which are shallower than 65 ° to the vertical, since such flat emitted light components can dazzle people working on computer screens.
  • the fluorescent lamps immediately downwards exiting light component is directed by a light grid.
  • a prism structure for a targeted and glare-free light distribution.
  • plate-shaped light distribution elements with hollow chambers which scatter the light. These light distribution elements with scattering structure are used in the areas adjacent to the area in which the fluorescent lamps are located.
  • the US 4,233,651 describes a work lamp, with a first, the fluorescent tube in the longitudinal direction covering prism plate with downward prisms, and a second, arranged underneath prism plate with upwardly and transversely to the longitudinal direction arranged priming plate only half the length.
  • the lower prism plate does not limit the angle of the downwardly emitted light.
  • the object of the present invention is to provide a luminaire of the type mentioned, which has a further improved Entblendungs characterizing at the same time high luminous efficacy with respect to the downwardly emerging from the lamp light component.
  • At least one first prism cover is provided with a prism structure oriented essentially in the longitudinal direction of the luminous means, and at least one second prism cover with a prism structure aligned substantially transversely to the longitudinal direction of the luminous means, wherein the second prism cover covers the first prism cover at least in regions.
  • the first prism cover effects effective glare suppression in a main viewing direction
  • the second prism cover achieves an effective glare reduction also in directions which are substantially transverse to the aforementioned main viewing direction.
  • the two prismatic covers can cover or overlap predominantly or preferably almost completely. Accordingly, the first prism cover is preferably arranged at a suitable distance below the luminous means and the second prism cover can be arranged at a greater or lesser distance again below this first prism cover. If a flat construction of the luminaire is desired, the second lower prism cover is preferably arranged comparatively close to the first upper prism cover.
  • the first prism cover preferably has prism structures extending on the underside and preferably in the longitudinal direction of the luminous means. These prism structures are preferably designed such that a tooth profile results in the cross section of the prism cover, that is to say thus transversely to the longitudinal direction of the prism structures. Preferably, it is a sawtooth or triangular tooth profile, wherein a symmetrical tooth profile shape is particularly preferred. Preferably, the prism edges span an angle ⁇ (see Fig.
  • the downwardly facing priming surfaces are inclined by 40 to 50 ° to the horizontal central plane of the lamp, so that substantially orthogonal to the Reflected light is deflected by two reflections on the prism surfaces in the upper half-space prism cover, so that the luminance of the prism plate is reduced immediately below the light source.
  • prism edges are flattened, so that a trapezoidal structure results in cross-section transverse to the prism structure, so that the orthogonally incident light is not completely deflected into the upper half-space. Due to the extent of the flattening, the proportion of the light not deflected into the upper half-space can be adjusted.
  • the flattening is rounded, preferably in the form of a circular arc (in the cross-sectional view, radius R in FIG Fig. 2 ) so that the passing light is fanned out.
  • the prism structure may have a more or less strong tread depth. It is essential that the tread depth is not too large, otherwise a stripe structure can form below the luminaire. With a tread depth of 0.5 to 2 mm (H in Fig. 2 ), preferably less than 1.5 mm, it comes at a distance of not more than 10 cm from the lamp base no longer to form such strip structures.
  • the first, preferably upper prism cover may preferably have a substantially flat plate shape.
  • the lower, preferably second prismatic cover may preferably have a convexly arched basic shape as seen from the underside of the luminaire, preferably viewed convexly in the transverse direction of the luminaire, that is transversely to the longitudinal orientation of the luminous means, wherein elongated fluorescent lamps are generally used as the luminous means.
  • the radius of curvature of the convexly curved base body may be 6 to 10 times the diameter of the fluorescent tube, wherein the distance between the longitudinal central axis of the fluorescent tube from the longitudinal center line of the curved base body preferably about 1.7 to 2.5 times the diameter of the fluorescent tube corresponds.
  • the side longitudinal edges of the first and second priming cover touch or have only a small distance.
  • the prism structure of the second prism cover preferably has a larger prism angle.
  • the angle between the prism surfaces 110 to 130 ° (angle ⁇ in Fig. 3 ), particularly preferably 115 to 125 °, be, preferably without flattening or rounding of the prism edges.
  • the prism covers are made of highly transparent material such as glass or plastics, such as acrylic glass.
  • the longitudinal extent of the luminaire corresponds to the length of the fluorescent tube plus the extension of the terminating elements required at both ends.
  • the horizontal transverse extent can be 5 to 12 times the lamp diameter.
  • the luminaire according to the invention is preferably a pendant luminaire, but in principle a combination of the prism covers according to the present invention is also suitable, for example, in the case of a floor lamp.
  • the inventively preferred pendant lamp is open above the bulb, so that a part of the light emitted by the bulb, including the upwardly deflected by the first prism cover light shines against the ceiling and from there contributes as an indirect diffused light for room illumination.
  • the lamp according to the invention can also be a surface or recessed luminaire with lateral Lichtverteilhuntn, the lateral vertical, the fluorescent tube facing transparent, diffusely scattering light entry surfaces, an upper designed as a reflector cover and lower, converging towards the reflector converging transparent, diffusely scattering . have curved light emitting surfaces.
  • the second prism cover in the basic form of a flat plate. This results in that the two prism covers can be close to each other, a particularly low height of the lamp.
  • both prismatic covers may be formed with a curved basic structure, in particular with a curvature in the same direction. If the first prism cover is formed with a planar upper side and a convexly curved underside, the prism structure being rotated with the radius of curvature, a particularly good emission angle limitation of the light emitted by the illuminant with a flat emission angle can be achieved.
  • fluorescent lamps are preferably used in a luminaire according to the invention fluorescent lamps, wherein one, two or more fluorescent lamps can be used, preferably in the longitudinal direction of the luminaire extending and arranged parallel to each other.
  • asymmetrically radiating luminaires by asymmetrical design of the prism structure, for example to equip luminaires which are installed in the vicinity of room walls with an asymmetrically directed downward and to the room wall lighting profile, since it does not depend on glare-free wall if there are no people here.
  • the luminaire 1 consists essentially of a fluorescent lamp 2, a luminaire housing 3, a first primer cover 4 and a second prism cover 5.
  • the fluorescent lamp 2 mounted on a suspension, not shown below the ceiling lamp 1 radiates on the one hand directly upwards against the ceiling for indirect diffuse room lighting.
  • the radiated down at a large opening angle to the first prism cover 4 light is deflected by the prism diffraction on the one hand to a narrower angle, preferably preferably less than 65 ° to the vertical central plane and partially deflected upward, with this first prism cover 4 substantially no constriction the emission angle in the longitudinal direction of the lamp 1 takes place.
  • a second, preferably convexly curved, prismatic cover 5 is provided below the first priming cover 4, the prism structure of which is formed transversely to the prismatic structure of the first cover 4 and which therefore causes a narrowing of the emission angle in the longitudinal direction of the luminaire.
  • the first prism cover 4 has a flat top and a bottom with a prismatic structure.
  • the prism structure consists of parallel to the light bulb elongated prism surfaces which together form an angle ⁇ of 40 to 50 ° and the prime edges are flattened by a rounding with the radius R, which may be, for example, 0.2 to 0.7 mm.
  • the profile depth H of the prisms can be 0.5 to 1.5 mm, for example, the extent L of the flat flank surfaces of the prisms can be 0.2 to 1.2 mm.
  • the second prism cover according to Fig. 3 an angle ⁇ between the inwardly directed prism flanks of 110 to 125 °.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Optical Elements Other Than Lenses (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)
  • Illuminated Signs And Luminous Advertising (AREA)

Claims (12)

  1. Luminaire avec une partie lumineuse rayonnée directement vers le côté inférieur comportant au moins un tube fluorescent (2), ainsi qu'au moins un premier diffuseur prismatique (4) disposé sous le tube fluorescent et présentant une structure prismatique positionnée, côté inférieur, essentiellement dans le sens longitudinal du tube fluorescent, ainsi qu'au moins un deuxième diffuseur prismatique (5), celui-ci étant disposé sous le premier diffuseur prismatique avec une structure prismatique positionnée transversalement à l'axe longitudinal du tube fluorescent, caractérisé en ce que les flancs du prisme de la structure prismatique du premier diffuseur présentent un angle (α) de 80 à 100° et en ce que le deuxième, au moins, diffuseur prismatique recouvre le premier diffuseur prismatique, les flancs du prisme de la structure prismatique du deuxième diffuseur présentant un angle (β), supérieur à l'angle des flancs du prisme du premier diffuseur prismatique.
  2. Luminaire selon la revendication 1, pour lequel les flancs du prisme du deuxième diffuseur prismatique forment un angle (β) de 110 à 130°.
  3. Luminaire selon la revendication 1 ou 2, pour lequel le premier diffuseur prismatique (4) présente une forme de plaque essentiellement plane.
  4. Luminaire selon l'une quelconque des revendications 1 à 3, pour lequel la structure prismatique du premier diffuseur prismatique (4) est réalisée en section transversale en tant que profil triangulaire à bords arrondis.
  5. Luminaire selon l'une quelconque des revendications 1 à 4, pour lequel le deuxième diffuseur prismatique (5) présente, vu dans le sens transversal du luminaire et du côté inférieur du luminaire, une forme de base courbée de manière convexe.
  6. Luminaire selon l'une quelconque des revendications 1 à 5, pour lequel la structure prismatique du deuxième diffuseur prismatique (5) est en tant que profil denté, dans le sens transversal à l'axe longitudinal du tube fluorescent.
  7. Luminaire selon l'une quelconque des revendications 1 à 6, pour lequel la structure prismatique du deuxième diffuseur prismatique (5) est un profil denté triangulaire.
  8. Luminaire selon l'une quelconque des revendications 1 à 7, pour lequel la structure prismatique du premier diffuseur prismatique (4) et/ou la structure prismatique du deuxième diffuseur prismatique (5) est un profil triangulaire symétrique.
  9. Luminaire selon l'une quelconque des revendications 1 à 8, pour lequel celui-ci est un luminaire suspendu avec une partie lumineuse rayonnant vers le haut.
  10. Luminaire selon l'une quelconque des revendications 1 à 7, pour lequel celui-ci est réalisé à 1 ou 2 lampe(s) avec des lampes fluorescentes.
  11. Luminaire selon l'une quelconque des revendications 1 à 10, caractérisé en ce que le boîtier du luminaire (3) est essentiellement ouvert vers le côté supérieur du luminaire.
  12. Luminaire selon l'une quelconque des revendications 1 à 11, pour lequel le premier diffuseur prismatique (4) repose, dans la zone de ses bords longitudinaux, sur les zones de bordures longitudinales du deuxième diffuseur prismatique (5) situé en partie inférieure et courbé de manière convexe ou est placé, avec peu d'espace, au-dessus de celui-ci.
EP05008108A 2004-04-15 2005-04-13 Luminaire Not-in-force EP1586818B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004018231 2004-04-15
DE102004018231A DE102004018231A1 (de) 2004-04-15 2004-04-15 Leuchte

Publications (3)

Publication Number Publication Date
EP1586818A2 EP1586818A2 (fr) 2005-10-19
EP1586818A3 EP1586818A3 (fr) 2006-01-11
EP1586818B1 true EP1586818B1 (fr) 2010-03-31

Family

ID=34935134

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05008108A Not-in-force EP1586818B1 (fr) 2004-04-15 2005-04-13 Luminaire

Country Status (4)

Country Link
EP (1) EP1586818B1 (fr)
AT (1) ATE462926T1 (fr)
DE (2) DE102004018231A1 (fr)
ES (1) ES2341551T3 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011012653B4 (de) * 2011-02-28 2013-07-25 Frensch Gmbh Einbauleuchte
DE102014004472B4 (de) * 2014-03-28 2015-11-05 Nordeon Gmbh Leuchtmodul aufweisend ein optisches Element

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19961493A1 (de) * 1999-05-25 2000-11-30 Siteco Beleuchtungstech Gmbh Hängeleuchte mit indirekter Lichtabstrahlung

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1941079A (en) * 1931-09-05 1933-12-26 Holophane Co Inc Lighting apparatus employing rectilinear light sources
US2050429A (en) * 1932-07-01 1936-08-11 Holophane Co Inc Light mixing apparatus
US2269554A (en) * 1938-03-01 1942-01-13 Holophane Co Inc Luminaire
US2258354A (en) * 1940-08-03 1941-10-07 Doane Products Corp Luminaire
US2818500A (en) * 1953-07-03 1957-12-31 Holophane Co Inc Prismatic reflectors
DE1995588U (de) * 1968-06-10 1968-10-31 Boehmer & Co Gmbh Elektrotechn Leuchtstoffroehrenleuchte
US4233651A (en) * 1978-03-30 1980-11-11 Keene Corporation Work area lighting system
CH664817A5 (de) * 1984-10-17 1988-03-31 Peter A Balla Beleuchtung fuer geschlossene laengliche raeume.
US5056892A (en) * 1985-11-21 1991-10-15 Minnesota Mining And Manufacturing Company Totally internally reflecting thin, flexible film
US5493481A (en) * 1990-01-26 1996-02-20 Wiegand; Gregory P. Banklight and method of gradated diffuse lighting
US5040104A (en) * 1990-03-19 1991-08-13 Herman Miller, Inc. Task light panel

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19961493A1 (de) * 1999-05-25 2000-11-30 Siteco Beleuchtungstech Gmbh Hängeleuchte mit indirekter Lichtabstrahlung

Also Published As

Publication number Publication date
DE502005009296D1 (de) 2010-05-12
DE102004018231A1 (de) 2005-12-08
ES2341551T3 (es) 2010-06-22
ATE462926T1 (de) 2010-04-15
EP1586818A2 (fr) 2005-10-19
EP1586818A3 (fr) 2006-01-11

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