EP1113219A2 - Lamp - Google Patents

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Publication number
EP1113219A2
EP1113219A2 EP00128495A EP00128495A EP1113219A2 EP 1113219 A2 EP1113219 A2 EP 1113219A2 EP 00128495 A EP00128495 A EP 00128495A EP 00128495 A EP00128495 A EP 00128495A EP 1113219 A2 EP1113219 A2 EP 1113219A2
Authority
EP
European Patent Office
Prior art keywords
lamp
transverse
luminaire according
lower edge
curved
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
EP00128495A
Other languages
German (de)
French (fr)
Other versions
EP1113219B1 (en
EP1113219A3 (en
Inventor
Christian Bartenbach
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.)
Ludwig Leuchten KG
Original Assignee
Gebr LUDWIG 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 Gebr LUDWIG GmbH filed Critical Gebr LUDWIG GmbH
Publication of EP1113219A2 publication Critical patent/EP1113219A2/en
Publication of EP1113219A3 publication Critical patent/EP1113219A3/en
Application granted granted Critical
Publication of EP1113219B1 publication Critical patent/EP1113219B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F21V11/02—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00 using parallel laminae or strips, e.g. of Venetian-blind type

Definitions

  • the present invention relates to a lamp for an elongated lamp parallel to Lamp-extending longitudinal reflectors and a large number of spaced-apart transverse slats, which have a lower, tapered area and the lower edge is bent.
  • Such a lamp is known from US 5,758,954.
  • the lower, tapered The area of the transverse slats has a changing curvature because of the lower edge of the transverse slats is curved, whereas the lower, tapered area upward-edging edges are straight. This geometry is disadvantageous on the lighting distribution.
  • the object of the invention is therefore to increase the lighting distribution of the known luminaire improve.
  • cross section of the lower, tapering Area across the width of the transverse slats has the same shape, and that the lower, tapering area upward edges in their curvature coincide with the lower edge of the cross slats.
  • the three-dimensional shape of the lower area of the Queriamellen becomes geometric seen generated by a predetermined curve section, which is preferably parabolic is curved in a normal plane to the longitudinal axis of the lamp with the same Alignment is shifted along the curved lower edge of the cross slats.
  • the highest point lies in the middle of the cross blades, whereas the lower edge closes the edges of the cross slats.
  • the cross sections show through the transverse lamellas all have the same shape and are only offset in height from each other. Overall, the new slat shape even with elongated light sources, such as fluorescent tubes, an essentially rotationally symmetrical light intensity distribution or masking behavior to reach.
  • the upper area lying above the edges of the transverse slats has a constant thickness.
  • the Thickness of the cross blades is about half the diameter of the lamp.
  • the top surface of the transverse lamellae, seen in the longitudinal direction of the lamp, is V-shaped in the central region is indented.
  • the lamp according to the invention has an elongated lamp 1 as the light source. Parallel to this lamp 1 extend longitudinal reflectors 2, which are with respect to the longitudinal center plane are symmetrical. The longitudinal reflectors 2 are only in the area between in FIG two Queriamellen 3 drawn, but they extend over the entire Lamp. The longitudinal reflectors 2 have involute shape in the upper region, so that all incident rays past the lamp 1 are reflected downwards.
  • the cross blades 3 are made of high quality aluminum sheet.
  • the transverse lamellae 3 run conically, the surfaces are concavely curved. Specifically, it's a parabolic or similar shape, which is generated by transverse displacement along the lower edge 9.
  • the cross shift takes place in a normal plane to the central axis of the lamp 1, the orientation of the parabolic curve piece that is moved laterally remains unchanged.
  • the curvature of the lower edge 9 coincides with the curvature of the edges 8.
  • the vertical height difference H shown in FIG. 2 is a quarter of the diameter D. the lamp 1.
  • the side surfaces of the transverse slats 3 run parallel to each other resulting in an unchanged thickness B in the upper region 5 of the transverse lamellae 3 results.
  • This thickness B is approximately half the diameter D of the lamp 1.
  • the top surface 6 of the transverse slats 3 extends outside the longitudinal reflector in the Edge zones 7 horizontally and is indented V-shaped towards the center in the longitudinal reflector, so that there is a free space for lamp 1.
  • the indentation is essentially sufficient down to the edges 8.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Optical Elements Other Than Lenses (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Fastening Of Light Sources Or Lamp Holders (AREA)

Abstract

A cross section of a lower, tapered area (4) has the same shape across the width of crosswise plates (3). A curve on edges (8) limiting the lower, tapered area upwards matches a lower edge (9) of the crosswise plates. Oblong reflectors (2) run parallel to an oblong lamp (1) acting as a source of light.

Description

Die vorliegende Erfindung betrifft eine Leuchte für eine längliche Lampe mit parallel zur Lampe verlaufenden Längsreflektoren und einer Vielzahl voneinander beabstandeter Querlamellen, die einen unteren, sich vejüngenden Bereich aufweisen und deren Unterkante gebogen ist.The present invention relates to a lamp for an elongated lamp parallel to Lamp-extending longitudinal reflectors and a large number of spaced-apart transverse slats, which have a lower, tapered area and the lower edge is bent.

Eine derartige Leuchte ist aus der US 5,758,954 bekannt. Der untere, sich verjüngende Bereich der Querlamellen weist dabei eine sich verändernde Krümmung auf, da die Unterkante der Querlamellen gebogen ist, wogegen die den unteren, sich verjüngenden Bereich nach oben begrenzenden Kanten gerade ausgeführt sind. Diese Geometrie wirkt sich nachteilig auf die Beleuchtungsverteilung aus.Such a lamp is known from US 5,758,954. The lower, tapered The area of the transverse slats has a changing curvature because of the lower edge of the transverse slats is curved, whereas the lower, tapered area upward-edging edges are straight. This geometry is disadvantageous on the lighting distribution.

Aufgabe der Erfindung ist es daher, die Beleuchtungsverteilung der bekannten Leuchte zu verbessern.The object of the invention is therefore to increase the lighting distribution of the known luminaire improve.

Dies wird erfindungsgemäß dadurch erreicht, daß der Querschnitt des unteren, sich verjüngenden Bereichs über die Breite der Querlamellen die gleiche Form aufweist, und daß die den unteren, sich verjüngenden Bereich nach oben begrenzenden Kanten in ihrer Krümmung mit der Unterkante der Querlamellen übereinstimmen.This is achieved according to the invention in that the cross section of the lower, tapering Area across the width of the transverse slats has the same shape, and that the the lower, tapering area upward edges in their curvature coincide with the lower edge of the cross slats.

Die dreimensionale Formgebung des unteren Bereichs der Queriamellen wird geometrisch gesehen dadurch erzeugt, daß ein vorgegebenes Kurvenstück, das vorzugsweise parabolisch gekrümmt ist, in einer Normalebene zur Längsachse der Lampe bei gleichbleibender Ausrichtung entlang der gekrümmten Unterkante der Querlamellen verschoben wird. Der höchstgelegene Punkt liegt dabei in der Mitte der Querlamellen, wogegen die Unterkante zu den Rändern der Querlamellen hin abfällt. Die Querschnitte durch die Querlamellen weisen alle gleiche Form auf und sind lediglich zueinander höhenversetzt. Insgesamt läßt sich die neue Lamellenform auch bei länglichen Lichtquellen, wie beispielsweise Leuchtstoffröhren, eine im wesentlichen rotationssymmetrische Lichtstärkenverteilung bzw. Ausblendverhalten erreichen.The three-dimensional shape of the lower area of the Queriamellen becomes geometric seen generated by a predetermined curve section, which is preferably parabolic is curved in a normal plane to the longitudinal axis of the lamp with the same Alignment is shifted along the curved lower edge of the cross slats. The The highest point lies in the middle of the cross blades, whereas the lower edge closes the edges of the cross slats. The cross sections show through the transverse lamellas all have the same shape and are only offset in height from each other. Overall, the new slat shape even with elongated light sources, such as fluorescent tubes, an essentially rotationally symmetrical light intensity distribution or masking behavior to reach.

Konstruktiv besonders einfach ist es, wenn der oberhalb der Kanten liegende obere Bereich der Querlamellen konstante Dicke aufweist. Lichttechnisch günstig ist es dabei, wenn die Dicke der Querlamellen etwa den halben Durchmesser der Lampe beträgt. It is structurally particularly simple if the upper area lying above the edges of the transverse slats has a constant thickness. In terms of lighting technology, it is advantageous if the Thickness of the cross blades is about half the diameter of the lamp.

Eine zu starke Begrenzung der Strahlung in Längsrichtung der Leuchte läßt sich dadurch vermeiden, daß die vertikale Höhendifferenz der Unterkante der Querlamellen etwa ein Viertel des Durchmessers der Lampe beträgt.An excessive limitation of the radiation in the longitudinal direction of the lamp can be avoided avoid that the vertical difference in height of the lower edge of the transverse slats about a Quarter of the diameter of the lamp.

Um einen Freiraum für die Lampe zu schaffen, ist schließlich vorzugsweise vorgesehen, daß die Deckfläche der Querlamellen in Längsrichtung der Lampe gesehen im Mittelbereich V-förmig eingebuchtet ist.Finally, in order to create a free space for the lamp, it is preferably provided that the top surface of the transverse lamellae, seen in the longitudinal direction of the lamp, is V-shaped in the central region is indented.

Weitere Merkmale und Einzelheiten der vorliegenden Erfindung ergeben sich aus der nachfolgenden Figurenbeschreibung. Dabei zeigt:

  • Fig. 1 eine perspektivische Ansicht einer erfindungsgemäße Leuchte und
  • Fig. 2 eine Vorderansicht einer Querlamelle.
    • Further features and details of the present invention result from the following description of the figures. It shows:
  • Fig. 1 is a perspective view of a lamp according to the invention and
  • Fig. 2 is a front view of a cross lamella.

    • Die erfindungsgemäße Leuchte weist als Lichtquelle eine längliche Lampe 1 auf. Parallel zu dieser Lampe 1 erstrecken sich Längsreflektoren 2, die bezüglich der Längsmittelebene symmetrisch ausgebildet sind. Die Längsreflektoren 2 sind in Fig. 1 lediglich im Bereich zwischen zwei Queriamellen 3 gezeichnet, sie erstrecken sich jedoch über die gesamte Leuchte. Die Längsreflektoren 2 weisen im oberen Bereich Evolventenform auf, sodaß alle auftreffenden Strahlen an der Lampe 1 vorbei nach unten reflektiert werden.The lamp according to the invention has an elongated lamp 1 as the light source. Parallel to this lamp 1 extend longitudinal reflectors 2, which are with respect to the longitudinal center plane are symmetrical. The longitudinal reflectors 2 are only in the area between in FIG two Queriamellen 3 drawn, but they extend over the entire Lamp. The longitudinal reflectors 2 have involute shape in the upper region, so that all incident rays past the lamp 1 are reflected downwards.

    In regelmäßigen Abständen sind in Normalebenen zur Längsachse der Lampe 1 Querlamellen 3 angeordnet. Die Querlamellen 3 sind aus hochwertigem Aluminiumblech hergestellt.At regular intervals there are 1 transverse lamellae in normal planes to the longitudinal axis of the lamp 3 arranged. The cross blades 3 are made of high quality aluminum sheet.

    Im unteren Bereich 4 zwischen der Unterkante 9 und den unteren Bereich 4 oben begrenzenden Kanten 8 verlaufen die Querlamellen 3 konisch zusammen, wobei die Flächen konkav gekrümmt sind. Konkret handelt es sich um eine parabolische oder ähnliche Form, die durch Querverschiebung entlang der Unterkante 9 erzeugt wird. Die Querverschiebung erfolgt in einer Normalebene zur Mittelachse der Lampe 1, wobei die Ausrichtung des parabolischen Kurvenstückes, das quer verschoben wird, unverändert bleibt. Auf diese Weise stimmt die Krümmung der Unterkante 9 mit der Krümmung der Kanten 8 überein. Die in Fig. 2 eingezeichnete vertikale Höhendifferenz H beträgt ein Viertel des Durchmessers D der Lampe 1. In the lower area 4 between the lower edge 9 and the lower area 4 above bounding edges 8, the transverse lamellae 3 run conically, the surfaces are concavely curved. Specifically, it's a parabolic or similar shape, which is generated by transverse displacement along the lower edge 9. The cross shift takes place in a normal plane to the central axis of the lamp 1, the orientation of the parabolic curve piece that is moved laterally remains unchanged. To this The curvature of the lower edge 9 coincides with the curvature of the edges 8. The The vertical height difference H shown in FIG. 2 is a quarter of the diameter D. the lamp 1.

    Im Bereich 5 oberhalb der Kanten 8 verlaufen die Seitenflächen der Querlamellen 3 zueinander parallel woraus sich eine unveränderte Dicke B im oberen Bereich 5 der Querlamellen 3 ergibt. Diese Dicke B beträgt rund die Hälfte des Durchmessers D der Lampe 1.In the area 5 above the edges 8, the side surfaces of the transverse slats 3 run parallel to each other resulting in an unchanged thickness B in the upper region 5 of the transverse lamellae 3 results. This thickness B is approximately half the diameter D of the lamp 1.

    Die Deckfläche 6 der Querlamellen 3 außerhalb des Längsreflektors verläuft in den Randzonen 7 horizontal und ist im Längsreflektor zur Mitte hin V-förmig eingebuchtet, sodaß sich ein Freiraum für die Lampe 1 ergibt. Die Einbuchtung reicht dabei im wesentlichen hinunter bis zu den Kanten 8.The top surface 6 of the transverse slats 3 extends outside the longitudinal reflector in the Edge zones 7 horizontally and is indented V-shaped towards the center in the longitudinal reflector, so that there is a free space for lamp 1. The indentation is essentially sufficient down to the edges 8.

    Claims (8)

    Leuchte für eine längliche Lampe mit parallel zur Lampe verlaufenden Längsreflektoren und einer Vielzahl voneinander beabstandeter Querlamellen, die einen unteren, sich verjüngenden Bereich aufweisen und deren Unterkante gebogen ist, dadurch gekennzeichnet, daß der Querschnitt des unteren, sich verjüngenden Bereichs (4) über die Breite der Querlamellen (3) die gleiche Form aufweist, und daß die den unteren, sich verjüngenden Bereich (4) nach oben begrenzenden Kanten (8) in ihrer Krümmung mit der Unterkante (9) der Querlamellen (3) übereinstimmen.Luminaire for an elongated lamp with longitudinal reflectors running parallel to the lamp and a plurality of spaced apart transverse lamellas, a lower one have tapered area and the lower edge is curved, thereby characterized in that the cross section of the lower, tapered region (4) over the width of the transverse slats (3) has the same shape, and that the lower, itself tapering region (4) with upwardly delimiting edges (8) in their curvature the lower edge (9) of the transverse slats (3) match. Leuchte nach Anspruch 1, dadurch gekennzeichnet, daß der untere, sich verjüngende Bereich (4) der Querlamellen (3) beidseits konkav gekrümmt Ist.Luminaire according to claim 1, characterized in that the lower, tapered Area (4) of the transverse lamellae (3) is concavely curved on both sides. Leuchte nach Anspruch 2, dadurch gekennzeichnet, daß der untere, sich verjüngende Bereich (4) der Querlamellen (3) beidseits parabolisch gekrümmt ist.Luminaire according to claim 2, characterized in that the lower, tapered Area (4) of the transverse lamellae (3) is parabolically curved on both sides. Leuchte nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß der oberhalb der Kanten (8) liegende obere Bereich (5) der Querlamellen (3) konstante Dicke (B) aufweist.Luminaire according to one of claims 1 to 3, characterized in that the above the upper region (5) of the transverse lamellae (3) of the edges (8) constant thickness (B) having. Leuchte nach Anspruch 4, dadurch gekennzeichnet, daß die Dicke (B) der Querlamellen (3) etwa den halben Durchmesser (D) der Lampe (1) beträgt.Luminaire according to claim 4, characterized in that the thickness (B) of the transverse slats (3) is about half the diameter (D) of the lamp (1). Leuchte nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß die Unterkante (9) der Querlamellen kreisbogenförmig gekrümmt ist.Luminaire according to one of claims 1 to 5, characterized in that the lower edge (9) the transverse slats is curved in a circular arc. Leuchte nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß die vertikale Höhendifferenz (H) der Unterkante (9) der Querlamellen (3) etwa ein Viertel des Durchmessers (D) der Lampe (1) beträgt.Luminaire according to one of claims 1 to 6, characterized in that the vertical Height difference (H) of the lower edge (9) of the transverse slats (3) about a quarter of the Diameter (D) of the lamp (1). Leuchte nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß die Deckfläche (6) der Querlamellen (3) in Längsrichtung der Lampe (1) gesehen im Mittelbereich V-förmig eingebuchtet ist und in den Randzonen (7) horizontal verläuft.Luminaire according to one of claims 1 to 7, characterized in that the Top surface (6) of the transverse lamellae (3) seen in the longitudinal direction of the lamp (1) The central region is indented in a V-shape and runs horizontally in the edge zones (7).
    EP00128495A 1999-12-27 2000-12-23 Lamp Expired - Lifetime EP1113219B1 (en)

    Applications Claiming Priority (2)

    Application Number Priority Date Filing Date Title
    AT219099 1999-12-27
    AT219099 1999-12-27

    Publications (3)

    Publication Number Publication Date
    EP1113219A2 true EP1113219A2 (en) 2001-07-04
    EP1113219A3 EP1113219A3 (en) 2002-02-06
    EP1113219B1 EP1113219B1 (en) 2008-01-02

    Family

    ID=3529646

    Family Applications (1)

    Application Number Title Priority Date Filing Date
    EP00128495A Expired - Lifetime EP1113219B1 (en) 1999-12-27 2000-12-23 Lamp

    Country Status (4)

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    US (2) US6582099B2 (en)
    EP (1) EP1113219B1 (en)
    AT (1) ATE382827T1 (en)
    DE (1) DE50014892D1 (en)

    Cited By (1)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    EP1260760A2 (en) * 2001-05-18 2002-11-27 C.R.F. Società Consortile per Azioni Controlled-luminance lighting device

    Families Citing this family (10)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    ATE376147T1 (en) * 2001-11-01 2007-11-15 Koninkl Philips Electronics Nv LAMP AND LUMINAIRE GRID FOR SUCH A LAMP
    EP1472491B1 (en) * 2002-01-28 2008-05-14 Koninklijke Philips Electronics N.V. Luminaire with lamellas, for tubular lamp
    ITFI20020077U1 (en) * 2002-07-19 2004-01-19 Targetti Sankey Spa ANTI-GLARE GRID FOR TUBULAR LIGHT SOURCES
    CN100472122C (en) * 2002-08-01 2009-03-25 皇家飞利浦电子股份有限公司 Luminaire and lamellae louver therefor
    DE10360943A1 (en) * 2003-12-23 2005-07-21 Engel, Hartmut S. lighting device
    US7195374B2 (en) * 2004-03-12 2007-03-27 Honeywell International, Inc. Luminaires for artificial lighting
    ATE508325T1 (en) * 2004-11-12 2011-05-15 Koninkl Philips Electronics Nv LAMP AND SLATS FOR IT
    NL1027815C2 (en) * 2004-12-17 2006-06-20 Lichtholland B V Lamella (52) is for a reflector (2) for a light fitting for a tube lamp and comprises two opposing main sides, an upper side and a lower side (8), all sides having a light-reflecting surface
    TWI335608B (en) * 2006-07-20 2011-01-01 Au Optronics Corp Connecting unit for wick of cold cathode fluorescent lamp
    DE102013207609A1 (en) * 2013-04-25 2014-10-30 Osram Gmbh Reflector arrangement with multiple reflectors and semiconductor light sources

    Citations (1)

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    Publication number Priority date Publication date Assignee Title
    US5758954A (en) 1995-02-14 1998-06-02 U.S. Philips Corporation Luminaire

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    DE8330299U1 (en) * 1983-10-18 1984-04-12 Semperlux Gmbh, 1000 Berlin PARABOLIC BLADE ELEMENT FOR LONG-STRETCHED LIGHT SOURCES
    ES2066960T3 (en) 1989-12-27 1995-03-16 Philips Nv LUMINARY.
    DE4417917C2 (en) * 1994-05-24 1996-05-23 Kotzolt Leuchten Slat insert for shielding the light exit opening of light pipes
    US5528478A (en) * 1995-10-04 1996-06-18 Cooper Industries, Inc. Lighting fixture having a parabolic louver
    WO1998015775A1 (en) * 1996-10-08 1998-04-16 Philips Electronics N.V. Luminaire
    GB2341669A (en) * 1998-09-15 2000-03-22 Interlux Limited Light controller for light fitting

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    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    US5758954A (en) 1995-02-14 1998-06-02 U.S. Philips Corporation Luminaire

    Cited By (2)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    EP1260760A2 (en) * 2001-05-18 2002-11-27 C.R.F. Società Consortile per Azioni Controlled-luminance lighting device
    EP1260760A3 (en) * 2001-05-18 2005-10-19 C.R.F. Società Consortile per Azioni Controlled-luminance lighting device

    Also Published As

    Publication number Publication date
    EP1113219B1 (en) 2008-01-02
    EP1113219A3 (en) 2002-02-06
    US20010019481A1 (en) 2001-09-06
    DE50014892D1 (en) 2008-02-14
    ATE382827T1 (en) 2008-01-15
    US6582099B2 (en) 2003-06-24

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