EP1073862B1 - Dispositif de guidage de lumiere pour source lumineuse oblongue - Google Patents

Dispositif de guidage de lumiere pour source lumineuse oblongue Download PDF

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Publication number
EP1073862B1
EP1073862B1 EP99917682A EP99917682A EP1073862B1 EP 1073862 B1 EP1073862 B1 EP 1073862B1 EP 99917682 A EP99917682 A EP 99917682A EP 99917682 A EP99917682 A EP 99917682A EP 1073862 B1 EP1073862 B1 EP 1073862B1
Authority
EP
European Patent Office
Prior art keywords
light source
grooves
light
axis
reflector
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.)
Expired - Lifetime
Application number
EP99917682A
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German (de)
English (en)
Other versions
EP1073862A1 (fr
EP1073862B2 (fr
Inventor
Johannes Huter
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.)
ZUMTOBEL LIGHTING GmbH
Original Assignee
Zumtobel Staff GmbH
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Filing date
Publication date
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Application filed by Zumtobel Staff GmbH filed Critical Zumtobel Staff GmbH
Priority to EP99917682A priority Critical patent/EP1073862B2/fr
Publication of EP1073862A1 publication Critical patent/EP1073862A1/fr
Publication of EP1073862B1 publication Critical patent/EP1073862B1/fr
Application granted granted Critical
Publication of EP1073862B2 publication Critical patent/EP1073862B2/fr
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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
    • 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
    • F21V13/04—Combinations of only two kinds of elements the elements being reflectors and refractors

Definitions

  • the present invention relates to a device for Light guidance for an elongated light source, in particular Fluorescent tube, with an essentially tubular or tubular sector-shaped Essentially made of transparent material coaxial shot of the light source on the inside with axially parallel, adjacent grooves, notches or the like. is provided, which flanks have.
  • a device of the type mentioned is from the CH 389 538 known.
  • the Grooves for scattering or fanning out the light distribution in axial normal direction to the luminous flux density immediately under the light source is achieved by using sharp grooves with an apex angle of approx. 60 ° can be used.
  • the question of light dimming relative this document does not refer to the axial direction of the light source addressed.
  • a light guide is often desired in order to to maintain the specified radiation angle, outside of which one extensive suppression of that emitted by the light source Light is done.
  • These can be refracting or reflecting Devices are used; a well-known type of reflective Devices are mirror grids made of longitudinal and transverse reflector slats. Combinations of refractory and reflective devices are possible.
  • the invention aims to be a refractory To create light guiding device, which is an inexpensive It represents an alternative to grid luminaires.
  • flanks of the grooves are in an axially normal Section seen at an angle of 40 ° to 46 °, preferably 43 °, are inclined with respect to the radial direction.
  • this structure causes a redirection of Light rays near the axial direction closer to one of the radials Direction.
  • the light radiation from such a device (at least partially) encased fluorescent tube is in hidden an angular cone around the axial, i.e. the beam angle normal to the fluorescent tube axis (e.g. downwards) is restricted.
  • the result can be that of mirror louvres customary axially normal slats dispensed with be because the light guide device according to the invention Longitudinal light suppression takes over.
  • the grooves are preferred evenly over the inner circumference of the body, and are particularly preferred at least 20 marks provided. This will make the light distribution evened over the radiation range.
  • the distance between half the depth of the grooves is preferred and axis of the body 1.4 to 1.7 times the radius of the light source to be recorded, which is a particularly compact design allows.
  • the refractive index the transparent material is at least 1.45, which has a larger shading angle, i.e. a lesser Beam angle allows.
  • Another aspect of the invention is the creation a lamp with an elongated light source, in particular Fluorescent tube by a roof-like reflector is overlapped and with a light guide device according to the invention is equipped with a tubular body, which encloses the light source. If a light guiding device is used with tubular sector-shaped body, this surrounds the Light source on its side facing away from the reflector.
  • the length of the lamp shown in section in Fig. 1 in The direction of axis 2 can be chosen freely.
  • a fluorescent tube is any known form of an "elongated Light source "possible, e.g. halogen rods, chains from individual light sources such as incandescent lamps, etc.
  • the axis 2 of the Light source 1 need not necessarily be straight, but can also be slightly curved or polygonal, in which Cases of the body 3 according to the course of the light source 1 is adjusted.
  • the inside of the body 3 is parallel to the axis 2 running, adjacent grooves 5, notches or the like. Mistake. In the example shown, 12 grooves are 5 evenly distributed over the inner circumference of the body 3.
  • the grooves 5 have concave flanks 6, 7, seen in an axially normal section.
  • the radius R 1 of the flanks 6, 7 is approximately 0.5 to 2.0 times the distance R 2 between half the depth of the Grooves 5 and the common axis 2 of light source 1 and body 3.
  • the average angle ( ⁇ 1 + ⁇ 2 ) / 2 of the flanks 6, 7 to the radial 8 is in the range of 40 ° - 46 °, preferably about 43 °.
  • the distance R 2 between approximately half the depth of the grooves 5 and the common axis 2 of the light source 1 and body 3 is approximately 1.4 to 1.7 times the radius R L of the light source 1.
  • the outer radius R 3 of the body 3 is chosen to be as low as possible, ie in such a way that there is just sufficient strength for the body 3.
  • the valley bottoms 9 of the grooves 5 therefore extend close to the outer circumference of the body 3.
  • the number of grooves 5 can be chosen as large as desired and is limited in practice by manufacturing restrictions.
  • the flanks 6, 7 of the grooves 5 can of course also just be trained.
  • the operation of the device is as follows.
  • the light rays emanating from the light source 2 are deflected by the prism-like structure of the body 3 formed by the grooves 5 not only in the axially normal plane (as shown in FIG. 1) but also in each axially parallel plane, an example of which is shown in FIG. 2 is shown.
  • the body 3 shines in each Direction perpendicular to the axis wider than light source 1.
  • FIGS. 4 and 5 show a spatial representation of the Combination of the refraction effects outlined in FIGS. 1 and 2. All rays of light coming from a point 10 on the light source 2 at a cone shell angle 11 based on the axis 2 go out (Fig. 4), with the interposition of the body 3rd (Fig. 5) in the form of a "compressed" cone shell 12, a shading cone 13 is formed about the axis 2.
  • the shading cone 13 produces a downward limitation of the radiation angle of the lamp shown in FIG. 1 normal to the plane of the drawing in FIG. 1, as could otherwise only be achieved by axially normal transverse lamellae within the reflector 4.
  • the shading in the axial direction is advantageous Effect because the light rays deflected from the shading area the radiation intensity of the light source / body arrangement increase on the reflector 4 so that it is better used becomes.
  • a special advantage arises in connection with reflectors which do not measure the angle of rays to the axis change the apex angle of the shading cone of the entire Luminaire is therefore not smaller than that of the light guide.
  • axially normal flat reflectors which as bilateral Conclusion of the reflector 4 serve, or axially parallel trough-shaped reflectors, where every point of the Reflector has an axially parallel tangential plane on which the angle of each beam to the axis is only mirrored, but the amount does not change. With such reflectors the longitudinal blanking of the light guide is not reduced.
  • the body 3 do not enclose the light source 2 on all sides, for example it is sufficient a tubular sector body, which is the light source 2 e.g. partially ring-shaped on its side facing away from the reflector 4 surrounds, for example 1/4, half or 3.4.
  • both the reflector and the body coinciding open spaces, axially parallel slots or open sectors, etc., which have an unobstructed passage enable certain light rays from the light source.
  • This variant is for example for suspended ceiling lights useful where the body and the reflector are on the top have a longitudinal slot through which the ceiling of is illuminated directly below, thereby creating a partially indirect To create lighting in the room.
  • the body 3 can be extruded from a transparent plastic become. Alternatively, the body 3 can be made accordingly profiled film are made, which around the Light source 2 partially or completely bent around becomes. It is also possible to have several coaxial bodies 3 with each other surrounding or surrounding (adjacent or with play) use, so that cascading their effects, i. a Increasing the shading angle 13 results.
  • the light source 1 can also be other than circular Have cross section and need not be arranged coaxially to the body 3 his.
  • tubular body 3 is not only understood a cylindrical tubular body, but a generally tubular body, e.g. with elliptical profile, rounded square profile etc.
  • the body 3 can be different from that shown at the light source 1, i.e. the neighboring between the flanks 6, 7 Grooves 5 formed apex 14 lie on the outer surface the light source 1.
  • the body 3 can be made in one piece with the outer wall of the light source 1, for example as a cover for a fluorescent tube.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Illuminated Signs And Luminous Advertising (AREA)
  • Circuit Arrangement For Electric Light Sources In General (AREA)
  • Eye Examination Apparatus (AREA)
  • Circuit Arrangements For Discharge Lamps (AREA)
  • Planar Illumination Modules (AREA)
  • Endoscopes (AREA)

Claims (9)

  1. Dispositif de guidage de lumière pour une source lumineuse (1) oblongue, en particulier des tubes fluorescents, comprenant un corps (3) essentiellement en forme de tube ou de secteur de tube en matière transparente pour le logement essentiellement coaxial de la source lumineuse (1), qui est pourvu sur son côté intérieur de rainures (5), encoches ou similaires, contiguës, axialement parallèles, qui ont des flancs (6, 7), caractérisé en ce que les flancs (6, 7) des rainures (5), encoches ou similaires, vus dans une coupe axialement normale, sont inclinés à un angle (ϕ1, ϕ2) de 40° à 46°, de préférence de 43°, par rapport au sens radial (8).
  2. Dispositif selon la revendication 1, caractérisé en ce que les rainures (5) sont réparties uniformément sur le pourtour intérieur du corps (3).
  3. Dispositif selon la revendication 1 ou 2, caractérisé en ce qu'il est prévu au moins 20 rainures (5).
  4. Dispositif selon une des revendications 1 à 3, caractérisé en ce que les rainures (5) présentent des flancs concaves vus dans une coupe axialement normale.
  5. Dispositif selon la revendication 4, caractérisé en ce que le rayon (R1) des flancs (6, 7) représente 0,5 à 2 fois la distance (R2) entre la moitié de la profondeur des rainures (5) et l'axe (2) du corps (3).
  6. Dispositif selon une des revendications 1 à 5, caractérisé en ce que l'indice de réfraction de la matière transparente est au moins de 1,45.
  7. Lumière comprenant une source lumineuse (1) oblongue, en particulier des tubes fluorescents, qui est recouverte par un réflecteur (4) en forme de toit, caractérisée par un dispositif selon une des revendications 1 à 4 comprenant un corps (3) essentiellement en forme de tube qui entoure la source lumineuse (1).
  8. Lumière comprenant une source lumineuse (1) oblongue, en particulier des tubes fluorescents, qui est recouverte par un réflecteur (4) en forme de toit, caractérisée par un dispositif selon une des revendications 1 à 6 comprenant un corps (3) essentiellement en forme de secteur de tube qui entoure la source lumineuse (1) sur son côté opposé au réflecteur (4).
  9. Lumière selon une des revendications 7 ou 8, comprenant une source lumineuse cylindrique, caractérisée en ce que la distance (R2) entre la moitié de la profondeur des rainures (5) et l'axe (2) du corps (3) représente 1,4 à 1,7 fois le rayon (RL) de la source lumineuse (1) à accueillir.
EP99917682A 1998-04-29 1999-04-29 Dispositif de guidage de lumiere pour source lumineuse oblongue Expired - Lifetime EP1073862B2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP99917682A EP1073862B2 (fr) 1998-04-29 1999-04-29 Dispositif de guidage de lumiere pour source lumineuse oblongue

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
AT28098 1998-02-17
AT28098 1998-04-29
EP98890139 1998-05-12
EP98890139A EP0953800A1 (fr) 1998-04-29 1998-05-12 Dispositif de contrÔle de la lumière émise par une lampe allongée
PCT/AT1999/000107 WO1999056058A1 (fr) 1998-04-29 1999-04-29 Dispositif de guidage de lumiere pour source lumineuse oblongue
EP99917682A EP1073862B2 (fr) 1998-04-29 1999-04-29 Dispositif de guidage de lumiere pour source lumineuse oblongue

Publications (3)

Publication Number Publication Date
EP1073862A1 EP1073862A1 (fr) 2001-02-07
EP1073862B1 true EP1073862B1 (fr) 2003-03-19
EP1073862B2 EP1073862B2 (fr) 2007-03-14

Family

ID=3486349

Family Applications (2)

Application Number Title Priority Date Filing Date
EP98890139A Withdrawn EP0953800A1 (fr) 1998-04-29 1998-05-12 Dispositif de contrÔle de la lumière émise par une lampe allongée
EP99917682A Expired - Lifetime EP1073862B2 (fr) 1998-04-29 1999-04-29 Dispositif de guidage de lumiere pour source lumineuse oblongue

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP98890139A Withdrawn EP0953800A1 (fr) 1998-04-29 1998-05-12 Dispositif de contrÔle de la lumière émise par une lampe allongée

Country Status (8)

Country Link
US (1) US6400086B1 (fr)
EP (2) EP0953800A1 (fr)
AT (1) ATE235019T1 (fr)
AU (1) AU755027B2 (fr)
DK (1) DK1073862T4 (fr)
ES (1) ES2195562T5 (fr)
NZ (1) NZ507603A (fr)
WO (1) WO1999056058A1 (fr)

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001071246A1 (fr) * 2000-03-20 2001-09-27 Bartenbach, Christian Dispositif de guidage de lumiere d'une source lumineuse oblongue
US7658514B2 (en) * 2006-04-13 2010-02-09 Lg Electronics Inc. Light guide, method and apparatus for manufacturing the same, and illuminating system having the same
US9291320B2 (en) 2013-01-30 2016-03-22 Cree, Inc. Consolidated troffer
US9869432B2 (en) 2013-01-30 2018-01-16 Cree, Inc. Luminaires using waveguide bodies and optical elements
US9442243B2 (en) 2013-01-30 2016-09-13 Cree, Inc. Waveguide bodies including redirection features and methods of producing same
US9366396B2 (en) 2013-01-30 2016-06-14 Cree, Inc. Optical waveguide and lamp including same
US9690029B2 (en) * 2013-01-30 2017-06-27 Cree, Inc. Optical waveguides and luminaires incorporating same
US9519095B2 (en) 2013-01-30 2016-12-13 Cree, Inc. Optical waveguides
US9625638B2 (en) 2013-03-15 2017-04-18 Cree, Inc. Optical waveguide body
US10400984B2 (en) 2013-03-15 2019-09-03 Cree, Inc. LED light fixture and unitary optic member therefor
US10436970B2 (en) 2013-03-15 2019-10-08 Ideal Industries Lighting Llc Shaped optical waveguide bodies
US9798072B2 (en) 2013-03-15 2017-10-24 Cree, Inc. Optical element and method of forming an optical element
US9920901B2 (en) 2013-03-15 2018-03-20 Cree, Inc. LED lensing arrangement
US9645303B2 (en) 2013-03-15 2017-05-09 Cree, Inc. Luminaires utilizing edge coupling
US9366799B2 (en) 2013-03-15 2016-06-14 Cree, Inc. Optical waveguide bodies and luminaires utilizing same
US10379278B2 (en) * 2013-03-15 2019-08-13 Ideal Industries Lighting Llc Outdoor and/or enclosed structure LED luminaire outdoor and/or enclosed structure LED luminaire having outward illumination
US10502899B2 (en) * 2013-03-15 2019-12-10 Ideal Industries Lighting Llc Outdoor and/or enclosed structure LED luminaire
US10209429B2 (en) 2013-03-15 2019-02-19 Cree, Inc. Luminaire with selectable luminous intensity pattern
US11719882B2 (en) 2016-05-06 2023-08-08 Ideal Industries Lighting Llc Waveguide-based light sources with dynamic beam shaping
US10416377B2 (en) 2016-05-06 2019-09-17 Cree, Inc. Luminaire with controllable light emission
US10739513B2 (en) 2018-08-31 2020-08-11 RAB Lighting Inc. Apparatuses and methods for efficiently directing light toward and away from a mounting surface
US10801679B2 (en) 2018-10-08 2020-10-13 RAB Lighting Inc. Apparatuses and methods for assembling luminaires

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Also Published As

Publication number Publication date
EP0953800A1 (fr) 1999-11-03
ATE235019T1 (de) 2003-04-15
AU3588699A (en) 1999-11-16
NZ507603A (en) 2002-05-31
ES2195562T3 (es) 2003-12-01
ES2195562T5 (es) 2007-11-01
EP1073862A1 (fr) 2001-02-07
AU755027B2 (en) 2002-11-28
DK1073862T3 (da) 2003-06-23
EP1073862B2 (fr) 2007-03-14
US6400086B1 (en) 2002-06-04
DK1073862T4 (da) 2007-07-16
WO1999056058A1 (fr) 1999-11-04

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