EP2587134A1 - Eclairage - Google Patents

Eclairage Download PDF

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Publication number
EP2587134A1
EP2587134A1 EP12190108.6A EP12190108A EP2587134A1 EP 2587134 A1 EP2587134 A1 EP 2587134A1 EP 12190108 A EP12190108 A EP 12190108A EP 2587134 A1 EP2587134 A1 EP 2587134A1
Authority
EP
European Patent Office
Prior art keywords
light
channel
longitudinal axis
luminaire according
dazzle
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
EP12190108.6A
Other languages
German (de)
English (en)
Other versions
EP2587134B1 (fr
Inventor
Tobias Grau
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.)
Individual
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Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP2587134A1 publication Critical patent/EP2587134A1/fr
Application granted granted Critical
Publication of EP2587134B1 publication Critical patent/EP2587134B1/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
    • F21V7/00—Reflectors for light sources
    • F21V7/0083—Array of reflectors for a cluster of light sources, e.g. arrangement of multiple light sources in one plane
    • 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
    • F21V11/06—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00 using crossed laminae or strips, e.g. grid-shaped louvers; using lattices or honeycombs
    • 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
    • F21V7/005—Reflectors for light sources with an elongated shape to cooperate with linear light sources
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2131/00—Use or application of lighting devices or systems not provided for in codes F21W2102/00-F21W2121/00
    • F21W2131/40—Lighting for industrial, commercial, recreational or military use
    • F21W2131/402—Lighting for industrial, commercial, recreational or military use for working places
    • 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
    • F21Y2105/00—Planar light sources
    • F21Y2105/10—Planar light sources comprising a two-dimensional array of point-like light-generating elements
    • 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
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]

Definitions

  • the present application relates to a luminaire, in particular a sheet-like luminaire for use on a VDU workstation.
  • a trend in the lighting industry is to provide lights with LEDs as light sources, since LEDs have a high luminous efficacy compared to conventional light sources. Since the light in the semiconductor of the LED is generated from a small surface area, today's highly efficient LEDs suitable for workplace illumination have a very high luminance (eg 50 x 10 ⁇ 6 cd / m 2) so that effective antiglare measures are particularly indicated are. Due to the high brightness of the LEDs, the glare is enhanced and reflections occur more frequently on the screen surface.
  • a luminaire which has a plurality of illumination sources in the form of LEDs. Furthermore, a light-scattering, plate-shaped body is provided on the emission side of the illumination sources, which has openings which expand toward the emission side. Part of the light emitted by the LEDs passes through the openings of the body. A second part of the light emitted by the LEDs hits unimpeded on the surface of the body and becomes in the plate-shaped Body initiated. At least a part of the light radiation introduced into the body is then diffused again as so-called secondary radiation from the plate-shaped body.
  • the object of the present invention is therefore to provide a luminaire which is effectively blinding even when using high-efficiency LEDs with high luminance.
  • the anti-dazzle channels, the LEDs and the light-guiding channels are arranged in such a way that at least one LED is arranged at the first end of the light guide channel of each light-conducting element and one light-conducting element is provided in each anti-dazzle channel in the region of the first end of the light guide channel.
  • the inner surface of each light guide channel is formed to receive the emitted light of each at the first
  • End of the light guide channel arranged at least one LED almost completely reflected and directs in the direction of the second end of the respective Entblendungskanals that surrounding the respectively associated Entblendungskanal webs are illuminated only weak.
  • the luminaire according to the invention has two components, namely the light-conducting elements of the light-guiding panel and the glare control channels of the glare screening, which take over the light guidance or glare suppression.
  • the division of tasks by light-guiding panel and glare screening means a much greater effort in terms of material and costs compared to the conventional solution.
  • this effort is worthwhile, as achieved by the structure according to the invention a significant improvement in glare and thus a more pleasant for the user light is generated.
  • the light-conducting element is arranged at the first end of the respective anti-dazzle channel. Since the light-conducting elements almost completely reflect the light passing through the respective light-guiding channel, no light from the LED (s) is incident on the surrounding webs in the region of the first end of the anti-dazzle channel. Only at the second end of the anti-dazzle channel, the surrounding webs are illuminated substantially by stray light, which is mainly formed at the second end of the Lichtlenkkanals. The largest part of the light emitted by the LEDs is directed by the light-guiding channels so that the light passes through the screening channels without any interaction with the glare screening. Since hardly any light radiation from the LEDs enters into the glare screening, it can also emit only little secondary radiation, so that the glare reduction grid appears pleasantly dark to the viewer looking in the direction of the light and optimum glare suppression is effected.
  • the direct insight into the light source of the lamp is additionally limited, so that even at a glare angle of 60 ° an effective glare reduction is achieved.
  • the walls of the Entblendungskanäle separating webs can be formed almost parallel to the vertical, which further reduces the glare. Furthermore, this minimizes the area of the glare reduction grid that is visible to the viewer from below, which likewise leads to a reduction in glare.
  • the inclusion of the Lichtlenkkanäle and the Entblendungskanäle also has the advantage that the overall height of the lamp compared to the conventional solution is not increased and the lamp further has a flat structure.
  • the interleaving of the light-guiding channels and the anti-dazzle channels achieves precise control and limitation of the luminance of the light emitted by the LEDs for effective glare-suppression, while maintaining optimum light guidance and optimum efficiency.
  • each of the first end of the anti-dazzle channels and the first end of the light guide channels are located approximately at the level of the top of the arranged on a circuit board LEDs.
  • the second end of the light-guiding channels and the second end of the anti-dazzle channels are each located on the opposite emitting side of the LEDs, wherein the height of the light-guiding channels in the emission direction is less than the height of the anti-dazzle channels.
  • a light guide channel is arranged in a Entblendungskanal.
  • an LED or a group of closely arranged LEDs for example three or four LEDs, may be provided for a glare channel and a light-guiding channel.
  • the use of an LED group as a light source is particularly advantageous if the combination of the spectral ranges of the LEDs of a group is to achieve a particularly balanced and pleasant light spectrum for the user.
  • the glare grid can be transparent or opaque.
  • the anti-dazzle screen may be colored. In the former case, the luminaire appears brighter outside the viewing angle than when coloring the anti-dazzle screen.
  • the Entblendungsraster has a comparatively high degree of transparency, the Entblendungsraster for reasons described above only slightly brightened because it, except for stray light, illuminated by the LEDs only slightly.
  • each light-guiding channel is formed to be at least 75%, preferably at least 85% reflective, particularly preferably white or chrome-colored.
  • Particularly low secondary radiation ie light radiation passing through the anti-dazzle screen
  • primary radiation means the light of the LEDs, either comes directly from the respective LED or was reflected on the surface of the light guide channel.
  • each light guide channel is arranged adjacent to the longitudinal axis of the respectively associated anti-dazzle channel.
  • the longitudinal axis of each light guide channel can extend inclined to the longitudinal axis of the respectively associated anti-dazzle channel. The angle of inclination of the longitudinal axes to each other is at least 5 °, preferably at least 15 °.
  • n 4 rows arranged side by side (in the example: 4 rows).
  • the light steering channels of the n / 2 rows have a first side (eg, the left side) with respect to a center line a longitudinal axis inclined to the longitudinal axis of the respectively associated anti-dazzle channel after the first side (eg to the left) and the second side (eg the right-hand) light-guiding channels to n / 2 rows lying in relation to the center line (in the example: 2 rows) a to the second side (eg to the right) to the longitudinal axis of the respective associated Entblendungskanals inclined longitudinal axis.
  • the glare reduction is particularly effective, in particular, in that the height of the light-guiding channels is approximately half the height of the respectively associated glare-reducing channels.
  • the light-guiding channels extend far into the respectively associated anti-dazzle channel and, in addition, due to their smaller diameter, as shown above, reduce the view into the respective light source.
  • the ratio between the wall distance at the second end of the light guide channel and the web distance at the second end of the associated anti-dazzle channel is between 0.5 and 0.6.
  • too small an opening at the second end of the light guide channel limits the homogeneity of the light generated by the lamp and the light emitted by the LEDs is too focused.
  • the distance between the opposite wall centers of the light guide channel at the second end and below the web spacing means the distance of the opposing web centers at the second end of the delamination channels.
  • At least 180 LEDs for a luminaire, preferably at least 230 LEDs, more preferably at least 480 LEDs reduces the problem of multiple shading beyond recognition.
  • the in the Figures 1 and 2 partial illustrated office pendant lamp has a housing 1.
  • two printed circuit boards 3 with a plurality of LEDs 5, a glare screening 10 and a light guide panel 20 are provided in the lower region of the housing 1.
  • the printed circuit boards 3 are fastened to the housing 1 by means of a holding plate, not shown.
  • the light guide panel 20 is arranged, which is inserted into the glare reduction 10 and is held by the glare barrier 10. This is attached by means of the Verblendungsraster 10 attached locking lugs 11 and projections 12 on the housing 1.
  • the luminaire according to the invention has four rows of adjacent LEDs 5, with two rows of LEDs 5 each being formed by a printed circuit board 3.
  • Each LED 5 is assigned a light-conducting element 21 of the light-guiding panel 20 and a glare duct 13 of the anti-dazzle screen 10.
  • the Entblendungsraster includes four rows of adjacent Verblendungskanälen 13, each having on its emission side a symmetrical, approximately square opening and in the direction of light easily, for example in the form of a parabola expand.
  • the Entblendungskanäle 13 are separated by the wall of the Entblendungshimnale 13 forming webs 14 from each other.
  • the respective outer anti-dazzle channels 13 are also bounded on the outside by applied to the housing 1 Entblendungsraster walls 15.
  • Each cup-shaped light-conducting element 21 of the light-guiding panel 20 in each case has a continuous light-guiding channel 22, which likewise widens in the emission direction. Analogous to the anti-dazzle channels 13, the light guide panel 20 forms four rows of adjacent light-conducting elements 21.
  • the light guide panel 20 is arranged such that the first end 26 of the light guide channel 22 is approximately in the region of the top of the LEDs 5. Further, the light guide panel is inserted into the anti-dazzle grid 10, that the light-conducting element 21 is disposed at the first end 16 of the anti-dazzle channel 13, wherein the first end 16 of the anti-dazzle channel 13 and the first end 26 of the light guide channel 22 at about a height in the region of the top the LEDs 5 are located.
  • the inner surface 27 of the light guide channel 22 is e.g. white glossy or chrome-plated, so that it reflects the incident light of the respective LED 5 at least 75%.
  • the light guide panel 20 consists for example of ASA plastic (acrylic ester-styrene-acrylonitrile) and may have a chromium layer in the case of a chromed inner surface 27 of the light guide channels 22.
  • the anti-dazzle screen 10 in particular its webs 14 or walls 15, for example, consist of a transparent material, e.g. PC plastic (polycarbonate).
  • PC plastic polycarbonate
  • the inner surface 27 of the light guide channel 22 is formed as an asymmetric free-form surface, which shifts the light center, in particular in the transverse direction of the lamp from the axis of the LED 5 addition.
  • FIG. 4b can be seen in which the marginal rays a, b of the outgoing light from the LED 5 are located. It can be seen that the light of the two rows of LEDs lying to the left of a center line is directed to the left outside, while the light of the LEDs 5 of the two rows to the right of the center line is directed to the right outside. This results in a wide illumination of the workplace.
  • each LED 5 is arranged next to the longitudinal axis 17 of the respective anti-dazzle channel 13, namely in the two left rows of FIGS. 4a and 4b right next to the longitudinal axis 17 and at the two rows of LEDs 5 to the right of the center line to the left of the longitudinal axis 17 of the respective anti-dazzle channel 13.
  • the inner surface 27 of the light guide channel 22 is formed symmetrically in the longitudinal direction of the lamp, since the marginal rays c, d are deflected about the same extent.
  • a light guide channel 22 and a glare channel 13 are each a group of LEDs 5, which are arranged directly next to each other, may be provided.
  • the longitudinal axis 29 of the light guide channel 22 extends at an angle ⁇ of at least 5 °, preferably at least 15 ° inclined to the longitudinal axis 17 of the anti-dazzle channel 13.
  • the longitudinal axes 29 of the two left rows of Lichtlenkkanäle 22 are inclined by the angle ⁇ to the left to the longitudinal axis 17 of the Entblendungskanals 13, while the two right rows of Lichtlenkkanäle 22 by the angle ⁇ to the right with respect to the longitudinal axis 17 of the Entblendungskanals 13 are inclined.
  • the height h of the light-guiding element 21 or the light-guiding channel 22 is for example about 8.5 mm and the height H of the anti-glare duct 13 is e.g. about 16 mm. Consequently, the height h of the light guide channel 22 is more than half the height H of the associated anti-dazzle channel thirteenth
  • the wall distance w1 at the second end 28 of the light guide channel 22 is approximately 12 mm in the transverse direction, for example, and the web distance W1 of the anti-dazzle channel 13 at its second end 18 is in the same direction e.g. about 22 mm.
  • the ratio between the wall distance w1 and the web distance W1 is therefore approximately 0.55 in the transverse direction.
  • the ratio of wall distance w2 to web distance W2 is about 0.56, where w2 is about 14 mm and W2 is about 25 mm.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Planar Illumination Modules (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
EP20120190108 2011-10-28 2012-10-26 Eclairage Not-in-force EP2587134B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102011117156A DE102011117156A1 (de) 2011-10-28 2011-10-28 Leuchte

Publications (2)

Publication Number Publication Date
EP2587134A1 true EP2587134A1 (fr) 2013-05-01
EP2587134B1 EP2587134B1 (fr) 2015-05-20

Family

ID=47290597

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20120190108 Not-in-force EP2587134B1 (fr) 2011-10-28 2012-10-26 Eclairage

Country Status (5)

Country Link
US (1) US20130294076A1 (fr)
EP (1) EP2587134B1 (fr)
CA (1) CA2795004A1 (fr)
DE (1) DE102011117156A1 (fr)
RU (1) RU2012145947A (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104180305A (zh) * 2013-05-21 2014-12-03 海洋王（东莞）照明科技有限公司 配光结构及其led灯具
CN104696733A (zh) * 2013-12-09 2015-06-10 欧普照明股份有限公司 一种照明灯具及其照明模组
CN107477468A (zh) * 2017-08-31 2017-12-15 苏州承源光电科技有限公司 防眩光吸顶灯
EP3267096A1 (fr) * 2016-07-05 2018-01-10 Valeo Vision Dispositif d'eclairage et/ou de signalisation pour vehicule automobile
CN109253412A (zh) * 2017-07-14 2019-01-22 光宝科技股份有限公司 照明系统及其运作方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018233569A1 (fr) * 2017-06-21 2018-12-27 苏州欧普照明有限公司 Lampe de table

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EP2221871A1 (fr) * 2009-02-18 2010-08-25 Everlight Electronics Co., Ltd. Dispositif électroluminescent
GB2479142A (en) * 2010-03-30 2011-10-05 Optovate Ltd Illumination Apparatus

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060007553A1 (en) * 2002-09-30 2006-01-12 Georg Bogner Device for producing a bundled light flux
DE102006016218A1 (de) 2006-04-03 2007-10-04 Nimbus Design Gmbh Leuchte, insbesondere Raumleuchte
EP2221871A1 (fr) * 2009-02-18 2010-08-25 Everlight Electronics Co., Ltd. Dispositif électroluminescent
GB2479142A (en) * 2010-03-30 2011-10-05 Optovate Ltd Illumination Apparatus

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104180305A (zh) * 2013-05-21 2014-12-03 海洋王（东莞）照明科技有限公司 配光结构及其led灯具
CN104696733A (zh) * 2013-12-09 2015-06-10 欧普照明股份有限公司 一种照明灯具及其照明模组
EP3267096A1 (fr) * 2016-07-05 2018-01-10 Valeo Vision Dispositif d'eclairage et/ou de signalisation pour vehicule automobile
FR3053757A1 (fr) * 2016-07-05 2018-01-12 Valeo Vision Dispositif d'eclairage et/ou de signalisation pour vehicule automobile
US11005013B2 (en) 2016-07-05 2021-05-11 Valeo Vision Lighting and/or signaling device for motor vehicle
CN109253412A (zh) * 2017-07-14 2019-01-22 光宝科技股份有限公司 照明系统及其运作方法
CN107477468A (zh) * 2017-08-31 2017-12-15 苏州承源光电科技有限公司 防眩光吸顶灯

Also Published As

Publication number Publication date
DE102011117156A1 (de) 2013-05-02
US20130294076A1 (en) 2013-11-07
RU2012145947A (ru) 2014-05-10
EP2587134B1 (fr) 2015-05-20
CA2795004A1 (fr) 2013-04-28

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