EP1073862B1 - Vorrichtung zur lichtführung für eine langgestreckte lichtquelle - Google Patents
Vorrichtung zur lichtführung für eine langgestreckte lichtquelle Download PDFInfo
- 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
Links
Images
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)
- Circuit Arrangement For Electric Light Sources In General (AREA)
- Eye Examination Apparatus (AREA)
- Circuit Arrangements For Discharge Lamps (AREA)
- Illuminated Signs And Luminous Advertising (AREA)
- Planar Illumination Modules (AREA)
- Endoscopes (AREA)
Description
Claims (9)
- Vorrichtung zur Lichtführung für eine langgestreckte Lichtquelle (1), insbesondere Leuchtstoffröhre, mit einem im wesentlichen rohr- oder rohrsektorförmigen Körper (3) aus transparentem Material zur im wesentlichen koaxialen Aufnahme der Lichtquelle (1), der an seiner Innenseite mit axialparallelen aneinandergrenzenden Riefen (5), Kerben od.dgl. versehen ist, welche Flanken (6, 7) haben, dadurch gekennzeichnet, daß die Flanken (6, 7) der Riefen (5), Kerben od. dgl. in einem axialnormalen Schnitt gesehen in einem Winkel (ϕ1, ϕ2) von 40° bis 46°, bevorzugt 43°, gegenüber der Radialrichtung (8) geneigt sind.
- Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Riefen (5) gleichmäßig über den Innenumfang des Körpers (3) verteilt sind.
- Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß zumindest 20 Riefen (5) vorgesehen sind.
- Vorrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Riefen (5) in einem axialnormalen Schnitt gesehen konkave Flanken (6, 7) aufweisen.
- Vorrichtung nach Anspruch 4, dadurch gekennzeichnet, daß der Radius (R1) der Flanken (6, 7) das 0,5- bis 2,0-fache des Abstandes (R2) zwischen halber Tiefe der Riefen (5) und Achse (2) des Körpers (3) beträgt.
- Vorrichtung nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß der Brechungsindex des transparenten Materials zumindest 1,45 beträgt.
- Leuchte mit einer langgestreckten Lichtquelle (1), insbesondere Leuchtstoffröhre, die von einem dachartigen Reflektor (4) übergriffen ist, gekennzeichnet durch eine Vorrichtung nach einem der Ansprüche 1 bis 6 mit einem im wesentlichen rohrförmigen Körper (3), welcher die Lichtquelle (1) umschließt.
- Leuchte mit einer langgestreckten Lichtquelle (1), insbesondere Leuchtstoffröhre, die von einem dachartigen Reflektor (4) übergriffen ist, gekennzeichnet durch eine Vorrichtung nach einem der Ansprüche 1 bis 6 mit einem im wesentlichen rohrsektorförmigen Körper (3), welcher die Lichtquelle (1) an ihrer dem Reflektor (4) abgewandten Seite umgibt.
- Leuchte nach einem der Ansprüche 7 oder 8 mit einer zylindrischen Lichtquelle, dadurch gekennzeichnet, daß der Abstand (R2) zwischen halber Tiefe der Riefen (5) und Achse (2) des Körpers (3) das 1,4- bis 1,7-fache des Radius (RL) der aufzunehmenden Lichtquelle (1) ist.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP99917682A EP1073862B2 (de) | 1998-04-29 | 1999-04-29 | Vorrichtung zur lichtführung für eine langgestreckte lichtquelle |
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 (de) | 1998-04-29 | 1998-05-12 | Vorrichtung zur Lichtführung für eine langgestreckte Lichtquelle |
EP99917682A EP1073862B2 (de) | 1998-04-29 | 1999-04-29 | Vorrichtung zur lichtführung für eine langgestreckte lichtquelle |
PCT/AT1999/000107 WO1999056058A1 (de) | 1998-04-29 | 1999-04-29 | Vorrichtung zur lichtführung für eine langgestreckte lichtquelle |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1073862A1 EP1073862A1 (de) | 2001-02-07 |
EP1073862B1 true EP1073862B1 (de) | 2003-03-19 |
EP1073862B2 EP1073862B2 (de) | 2007-03-14 |
Family
ID=3486349
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98890139A Withdrawn EP0953800A1 (de) | 1998-04-29 | 1998-05-12 | Vorrichtung zur Lichtführung für eine langgestreckte Lichtquelle |
EP99917682A Expired - Lifetime EP1073862B2 (de) | 1998-04-29 | 1999-04-29 | Vorrichtung zur lichtführung für eine langgestreckte lichtquelle |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98890139A Withdrawn EP0953800A1 (de) | 1998-04-29 | 1998-05-12 | Vorrichtung zur Lichtführung für eine langgestreckte Lichtquelle |
Country Status (8)
Country | Link |
---|---|
US (1) | US6400086B1 (de) |
EP (2) | EP0953800A1 (de) |
AT (1) | ATE235019T1 (de) |
AU (1) | AU755027B2 (de) |
DK (1) | DK1073862T4 (de) |
ES (1) | ES2195562T5 (de) |
NZ (1) | NZ507603A (de) |
WO (1) | WO1999056058A1 (de) |
Families Citing this family (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2001071246A1 (de) * | 2000-03-20 | 2001-09-27 | Bartenbach, Christian | Vorrichtung zur lichtführung für eine langgestreckte lichtquelle |
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 |
US9442243B2 (en) | 2013-01-30 | 2016-09-13 | Cree, Inc. | Waveguide bodies including redirection features and methods of producing 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 |
US9366396B2 (en) | 2013-01-30 | 2016-06-14 | Cree, Inc. | Optical waveguide and lamp including same |
US9625638B2 (en) | 2013-03-15 | 2017-04-18 | Cree, Inc. | Optical waveguide body |
US9690029B2 (en) * | 2013-01-30 | 2017-06-27 | Cree, Inc. | Optical waveguides and luminaires incorporating same |
US9581751B2 (en) | 2013-01-30 | 2017-02-28 | Cree, Inc. | Optical waveguide and lamp including same |
US9920901B2 (en) | 2013-03-15 | 2018-03-20 | Cree, Inc. | LED lensing arrangement |
US10502899B2 (en) * | 2013-03-15 | 2019-12-10 | Ideal Industries Lighting Llc | Outdoor and/or enclosed structure LED luminaire |
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 |
US9645303B2 (en) | 2013-03-15 | 2017-05-09 | Cree, Inc. | Luminaires utilizing edge coupling |
US9798072B2 (en) | 2013-03-15 | 2017-10-24 | Cree, Inc. | Optical element and method of forming an optical element |
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 |
US9366799B2 (en) | 2013-03-15 | 2016-06-14 | Cree, Inc. | Optical waveguide bodies and luminaires utilizing same |
US10209429B2 (en) | 2013-03-15 | 2019-02-19 | Cree, Inc. | Luminaire with selectable luminous intensity pattern |
US10416377B2 (en) | 2016-05-06 | 2019-09-17 | Cree, Inc. | Luminaire with controllable light emission |
US11719882B2 (en) | 2016-05-06 | 2023-08-08 | Ideal Industries Lighting Llc | Waveguide-based light sources with dynamic beam shaping |
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 |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH156501A (fr) † | 1930-08-25 | 1932-08-15 | Works Corning Glass | Lentille à dispersion pour projecteurs. |
CH289538A (de) * | 1949-10-22 | 1953-03-15 | Rheinpreussen Ag | Verfahren zur Herstellung des Diäthylaminoäthylesters der 4-Amino-2-oxy-benzoesäure. |
DE875938C (de) † | 1951-09-29 | 1953-05-07 | Fritz Schnebel | Vorrichtung zum Abblenden von Lichtquellen |
CH389538A (de) * | 1961-08-29 | 1965-03-31 | Belmag Beleuchtungs & Metallin | Beleuchtungskörper mit Abschlussglas |
GB953813A (en) † | 1962-03-15 | 1964-04-02 | Gen Electric Co Ltd | Improvements relating to lighting fittings and to refractors for use in such fittings |
GB1372024A (en) * | 1970-10-07 | 1974-10-30 | Oram J A | Lighting device |
US4188657A (en) * | 1973-07-13 | 1980-02-12 | Whiteway Manufacturing Co., Inc. | Reflector and method of producing different, distinctive and predictable light patterns therefrom |
DE7808786U1 (de) † | 1977-03-29 | 1978-07-13 | Zumtobel Ag, Dornbirn (Oesterreich) | Abdeckung aus lichtdurchlaessigem material fuer leuchtstofflampen |
US5183323A (en) * | 1982-09-29 | 1993-02-02 | Maurice Daniel | Flat panel illumination system |
CH664817A5 (de) † | 1984-10-17 | 1988-03-31 | Peter A Balla | Beleuchtung fuer geschlossene laengliche raeume. |
FR2668838B1 (fr) * | 1990-11-07 | 1993-02-05 | Faure Pierre | Dispositif a enceinte transparente munie d'une zone interne invisible de l'exterieur de l'enceinte. |
DE4115836C2 (de) * | 1991-05-15 | 1999-11-25 | Jordan Reflektoren Gmbh & Co | Leuchte mit einer Reflektoranordnung und einem Abblendkörper |
US5199787A (en) * | 1992-01-08 | 1993-04-06 | North American Philips Corporation | Reflector lamp having improved lens |
-
1998
- 1998-05-12 EP EP98890139A patent/EP0953800A1/de not_active Withdrawn
-
1999
- 1999-04-29 AU AU35886/99A patent/AU755027B2/en not_active Ceased
- 1999-04-29 US US09/673,780 patent/US6400086B1/en not_active Expired - Fee Related
- 1999-04-29 WO PCT/AT1999/000107 patent/WO1999056058A1/de active IP Right Grant
- 1999-04-29 EP EP99917682A patent/EP1073862B2/de not_active Expired - Lifetime
- 1999-04-29 AT AT99917682T patent/ATE235019T1/de active
- 1999-04-29 ES ES99917682T patent/ES2195562T5/es not_active Expired - Lifetime
- 1999-04-29 NZ NZ507603A patent/NZ507603A/en not_active IP Right Cessation
- 1999-04-29 DK DK99917682T patent/DK1073862T4/da active
Also Published As
Publication number | Publication date |
---|---|
US6400086B1 (en) | 2002-06-04 |
AU755027B2 (en) | 2002-11-28 |
ES2195562T3 (es) | 2003-12-01 |
ES2195562T5 (es) | 2007-11-01 |
EP0953800A1 (de) | 1999-11-03 |
DK1073862T4 (da) | 2007-07-16 |
EP1073862A1 (de) | 2001-02-07 |
EP1073862B2 (de) | 2007-03-14 |
ATE235019T1 (de) | 2003-04-15 |
NZ507603A (en) | 2002-05-31 |
WO1999056058A1 (de) | 1999-11-04 |
DK1073862T3 (da) | 2003-06-23 |
AU3588699A (en) | 1999-11-16 |
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