EP2071231A1 - Eclairage, en particulier éclairage d'intérieur - Google Patents

Eclairage, en particulier éclairage d'intérieur Download PDF

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Publication number
EP2071231A1
EP2071231A1 EP08021276A EP08021276A EP2071231A1 EP 2071231 A1 EP2071231 A1 EP 2071231A1 EP 08021276 A EP08021276 A EP 08021276A EP 08021276 A EP08021276 A EP 08021276A EP 2071231 A1 EP2071231 A1 EP 2071231A1
Authority
EP
European Patent Office
Prior art keywords
illumination sources
luminaire
light
shaped body
openings
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
EP08021276A
Other languages
German (de)
English (en)
Other versions
EP2071231B1 (fr
Inventor
Jürgen Honold
Markus Mohn
Dietrich Brennenstuhl
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.)
Nimbus Group GmbH
Original Assignee
Nimbus Group 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 Nimbus Group GmbH filed Critical Nimbus Group GmbH
Publication of EP2071231A1 publication Critical patent/EP2071231A1/fr
Application granted granted Critical
Publication of EP2071231B1 publication Critical patent/EP2071231B1/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
    • F21V11/00—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00
    • F21V11/08—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00 using diaphragms containing one or more apertures
    • F21V11/14—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00 using diaphragms containing one or more apertures with many small apertures
    • 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
    • F21V3/00—Globes; Bowls; Cover glasses
    • F21V3/02—Globes; Bowls; Cover glasses characterised by the shape

Definitions

  • the invention relates to a luminaire, in particular a room luminaire, having a plurality of illumination sources and having a diffusely light-scattering plate-shaped body provided on the emission side of the illumination sources, wherein the light-scattering plate-shaped body has a plurality of apertures widening towards the emission side, through which the illumination sources Forming primary radiation along a major axis of the illumination sources from which substantially unobstructed radiation is emitted from the light-diffusing material of the plate-shaped body, and light, which is not radiated by the illumination sources through the widening openings as primary radiation, in the light-scattering body is introduced and is emitted by this as diffuse scattered secondary radiation.
  • Such a light is off EP 1 843 081 A2 known.
  • the openings and illumination sources are arranged perpendicular to the flat surface of the diffuse light-scattering plate-shaped body.
  • a high directional illuminance is achieved directly below the light and on the other hand allows a visually appealing radiation.
  • the primary radiation of the luminaire only covers a relatively small area. For example, if the surface of an entire desk is to be illuminated, the luminaire would have to have a large extent in the horizontal direction.
  • the present invention has for its object to provide a lamp whose usability is extended.
  • a lamp of the type mentioned in the present invention that the respective main axis of the illumination sources and the widening openings are inclined relative to the surface normal of a flat surface of the diffuse light-scattering plate-shaped body.
  • the primary radiation of the lamp is inclined with respect to the flat surface.
  • the inclined main axes surface areas primary radiation
  • all lighting sources are with theirs Main axes inclined arranged, although this is not mandatory.
  • the diffusely light-scattering plate-shaped body preferably comprises a plastic injection-molded part.
  • the openings can be introduced into the same after removal of the plate-shaped body. Preferably, they are already introduced during injection molding in the plate-shaped body.
  • the illumination sources preferably each comprise a surface mounted device (SMD), which emits light from a flat side. The main axes of the light sources are perpendicular to the flat side of the illumination source.
  • SMD surface mounted device
  • a portion of the luminous power emitted by the illumination sources is branched off and emitted into the room as diffused, scattered secondary radiation by the diffuse light-scattering plate-shaped body.
  • the illumination power of the secondary radiation is much lower than the illumination power of the primary radiation and is preferably only about 10 to 40% of the illumination power of the primary radiation.
  • the respective main axis of the illumination sources and the widening openings with respect to the surface normal of the flat surface of the diffuse light-scattering plate-shaped body by 5 ° - 45 °, in particular by 10 ° - 40 °, more particularly by 15 ° - 35 ° are inclined.
  • the illumination intensity and the radiation characteristic of the primary radiation of the lamp can be specified.
  • the light-scattering plate-shaped Body horizontally and parallel to a surface to be illuminated, such as a desk, arranged.
  • the light exiting through the openings light is thus not only inclined with respect to the light-scattering plate-shaped body, but also applies inclined on the surface to be illuminated and "spreads" due to the expansion of the light beam to a larger area.
  • the sharper an angle ⁇ which is described between the main axis of the illumination source and the surface normal of the flat surface of the diffuse light-scattering plate-shaped body the lower the light intensity of the light incident on the surface to be illuminated.
  • all the major axes of the illumination sources are equally inclined with respect to the surface normal of the planar surface of the diffuse light-scattering plate-shaped body. This leads to a visually appealing radiation.
  • not all major axes of the illumination sources are equally inclined with respect to the surface normal of the planar surface of the diffuse light-scattering plate-shaped body.
  • a plurality of illumination sources and associated openings are arranged in a row, wherein the respective major axes of the illumination sources and the widening openings of a row are parallel and equal inclined. This ensures a directionally uniform primary radiation.
  • a plurality of rows are provided, which may in particular be parallel to one another.
  • the individual rows preferably each have the same distance from each other.
  • the luminaire has a plurality of rows, wherein the respective main axes of the plurality of rows are inclined to different degrees. The inclination of the major axes from one row to the next can thus decrease or increase.
  • a development provides that the respective main axes of the illumination sources are increasingly inclined from row to row. This ensures that the primary radiation is continuously widened from the first row to the last row.
  • both a surface to be illuminated, which is applied directly below and one, which is located farther away, with primary radiation are increasingly inclined from row to row.
  • the openings are bounded by flat flanks so that they have a more prismatic or pyramidal geometry.
  • Other shapes are conceivable as long as a directed primary radiation of the illumination sources in a main emission direction can be realized through the respective openings.
  • the openings form passage openings through the light-scattering body.
  • the illumination sources can thus radiate unhindered along the main axis in the primary radiation direction without passing through the light-scattering plate-shaped body. This ensures that the illumination sources can radiate with a maximum available illuminance in the direction of a surface to be illuminated.
  • the openings form a maximum opening angle of 50-100 °, in particular 50-90 °, in particular 50-80 ° and more particularly 50-70 °.
  • the diffuse light-scattering plate-shaped body may have an inclined, inclined to the plane of the plate contact surface. It can also have recesses into which the illumination sources can be inserted. Preference is given to an embodiment of the light-scattering plate-shaped body, in which the recesses are formed like a groove, so that, for example, a strip-shaped board with arranged at her several sources of illumination can be inserted and held.
  • the recess preferably has a slope that corresponds to the inclination of the main axes of the illumination sources with respect to the flat surface, so that the illumination sources lie flat on the slope.
  • the illumination sources of a row are preferably arranged on a strip-shaped circuit board. This is the result Assembly, in particular the contacting of the illumination sources simplified.
  • strip-shaped (n) board (s) is inclined with respect to the flat surface of the light scattering body according to the major axes of the illumination sources to the flat surface of the diffuse light scattering plate-shaped body / are.
  • the illumination sources can be applied areally to the boards.
  • the strip-shaped circuit board (s) is / are arranged on a carrier.
  • the carrier is fastened, for example, to a stand of the luminaire and, in addition to the strip-shaped circuit boards, also carries the diffusely light-scattering plate-shaped body.
  • the carrier it is also possible for the carrier to carry only electrical leads and to carry the illumination sources or the boards and to be held by the diffuse light-scattering plate-shaped body.
  • the carrier is formed from a flat material. This makes it easy and inexpensive to manufacture.
  • a further embodiment provides that the carrier is formed as a bent stamping part made of metal. As a result, it has a high strength.
  • the carrier in particular the bending stamped part, may have areas which are not inclined to the carrier plane for the attachment of strip-shaped circuit boards with illumination sources. This makes it possible for the inclined Arrangement of the illumination sources is effected by the carrier.
  • the carrier has cooling ribs. Due to the lighting sources, heat is always generated in addition to light, which can adversely affect individual components of the luminaire.
  • the heat generated can be forwarded to the cooling fins and discharged by convection to the environment.
  • illumination sources are arranged on two sides of the carrier, so that with a horizontal arrangement of the luminaire, these illumination sources thus emit upward and downward.
  • the luminaire can advantageously be provided as a flat surface-mounted luminaire on a wall or, preferably, on a ceiling. But it can also be designed as a floor lamp or table lamp or in any other form.
  • the illumination sources are formed by LEDs. It is particularly advantageous that LEDs have a long service life and can be applied in a simple manner to the strip-like circuit board. Depending on the desired illumination performance, it proves to be advantageous if the luminaire according to the invention comprises between 10 - 250, in particular 10 - 200, in particular 10 - 150 and further particularly 10 - 100 illumination sources.
  • the illumination power of the secondary radiation is only about 10 to 40% and in particular 10 to 30% of the illumination power of the primary radiation.
  • a luminaire 2, in particular a room luminaire, with a plurality of illumination sources 4 and with a diffusely light-scattering plate-shaped body 8 provided on the emission side 6 of the illumination sources 4 can be seen in the figures.
  • the illumination sources 4 radiate in the direction of a main axis 10 from a primary radiation.
  • the diffuse light-scattering plate-shaped body 8 has a plurality of openings 12 which expand toward the emission side 6. As a result of the openings 12 widening toward the emission side 6, the primary radiation of the illumination sources 4 is formed by the emitted light of the illumination sources 4 passing through the plate-shaped body 8 to the outside substantially unhindered.
  • Light which is not radiated from the illumination sources 4 through the widening openings 12 as the primary radiation is introduced into the diffused light-scattering plate-shaped body 8 and emitted by the latter as diffused secondary radiation.
  • the main axes 10 of the illumination sources 4 and the widening openings 12 are inclined relative to a flat surface 14 of the diffuse light-scattering plate-shaped body 8 (see angle ⁇ in FIG. 4 ).
  • FIG. 1 shows a perspective exploded view of an embodiment of the luminaire 2 according to the invention.
  • the diffuse light-scattering plate-shaped body 8 is arranged on a stand 16. This is connected by means of a receptacle 18 in the mounted state fixed to the stator 16.
  • the diffuse light-scattering plate-shaped body 8 has a substantially rectangular shell-like geometry and includes a plastic injection molded part.
  • the openings 12 are introduced in the course of injection molding in the plate-shaped body 8.
  • the plurality of openings 12 are formed continuously.
  • the openings 12 are arranged in rows 20, wherein a row 20 is perpendicular to a first extension direction 21 of the rectangular body 8.
  • the embodiment according to FIG. 1 shows that a plurality of rows 20 are provided, which are each arranged parallel to one another.
  • FIG. 1 shown embodiment, an electronic unit 22, which includes commercially available electronic elements, which will not be discussed in detail below.
  • the diffuse light-scattering plate-shaped body 8 forms a counterpart to the inclined regions 26 of the carrier 24.
  • the openings 12 are inclined with respect to the flat surface 14 of the diffused light scattering plate-shaped body 8.
  • FIG. 2 it can be seen that all the openings 12 are inclined with respect to the flat surface 14 equal.
  • FIGS. 5 and 6 each show embodiments of the luminaire 2 in which the luminaire extends not only along the first extension direction 21, but also along an opposite second extension direction 34 respectively starting from the stator 16th
  • FIG. 5 are all major axes 10 of the illumination sources 4 with respect to the flat surface 14 inclined equal (angle ⁇ ).
  • the lamp 2 for example, can be arranged between two desks and thus simultaneously applied to two surfaces with primary radiation.
  • angle ⁇ ⁇ ⁇ the angle of extension
  • a particular advantage of the invention is that by means of the luminaire 2 according to the invention, a large area to be illuminated can be exposed to primary radiation.
EP20080021276 2007-12-13 2008-12-08 Eclairage, en particulier éclairage d'intérieur Not-in-force EP2071231B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200710062268 DE102007062268A1 (de) 2007-12-13 2007-12-13 Leuchte, insbesondere Raumleuchte

Publications (2)

Publication Number Publication Date
EP2071231A1 true EP2071231A1 (fr) 2009-06-17
EP2071231B1 EP2071231B1 (fr) 2014-04-02

Family

ID=40251553

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20080021276 Not-in-force EP2071231B1 (fr) 2007-12-13 2008-12-08 Eclairage, en particulier éclairage d'intérieur

Country Status (2)

Country Link
EP (1) EP2071231B1 (fr)
DE (1) DE102007062268A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITPD20090379A1 (it) * 2009-12-18 2011-06-19 Dese Elettronica Srl Lampada a led per l illuminazione stradale

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1154200A2 (fr) * 2000-05-10 2001-11-14 Regent Beleuchtungskörper AG Distributeur de lumière pour un système d'éclairage, système d'éclairage et utilisation d' un système d'éclairage
WO2003044870A1 (fr) * 2001-11-22 2003-05-30 Mireille Georges Dispositif optique d'eclairage a diodes electroluminescentes
US20040105264A1 (en) * 2002-07-12 2004-06-03 Yechezkal Spero Multiple Light-Source Illuminating System
EP1843081A2 (fr) 2006-04-03 2007-10-10 Nimbus Design GmbH Eclairage, en particulier éclairage d'intérieur

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1154200A2 (fr) * 2000-05-10 2001-11-14 Regent Beleuchtungskörper AG Distributeur de lumière pour un système d'éclairage, système d'éclairage et utilisation d' un système d'éclairage
WO2003044870A1 (fr) * 2001-11-22 2003-05-30 Mireille Georges Dispositif optique d'eclairage a diodes electroluminescentes
US20040105264A1 (en) * 2002-07-12 2004-06-03 Yechezkal Spero Multiple Light-Source Illuminating System
EP1843081A2 (fr) 2006-04-03 2007-10-10 Nimbus Design GmbH Eclairage, en particulier éclairage d'intérieur

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITPD20090379A1 (it) * 2009-12-18 2011-06-19 Dese Elettronica Srl Lampada a led per l illuminazione stradale

Also Published As

Publication number Publication date
DE102007062268A1 (de) 2009-06-25
EP2071231B1 (fr) 2014-04-02

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