EP0159534A1 - Lampe de forme allongée - Google Patents

Lampe de forme allongée Download PDF

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Publication number
EP0159534A1
EP0159534A1 EP85103159A EP85103159A EP0159534A1 EP 0159534 A1 EP0159534 A1 EP 0159534A1 EP 85103159 A EP85103159 A EP 85103159A EP 85103159 A EP85103159 A EP 85103159A EP 0159534 A1 EP0159534 A1 EP 0159534A1
Authority
EP
European Patent Office
Prior art keywords
lamp
transverse
lamella
cross
luminaire
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
EP85103159A
Other languages
German (de)
English (en)
Other versions
EP0159534B1 (fr
Inventor
Franz Eugen Dipl.-Phys. Ing. Grawe
Manfred Grimm
Richard Dr.-Ing. Schneppendahl
Fred Dr.-Ing. Hasemann
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.)
Trilux GmbH and Co KG
Original Assignee
Trilux Lenze GmbH and Co KG
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6232313&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0159534(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Trilux Lenze GmbH and Co KG filed Critical Trilux Lenze GmbH and Co KG
Priority to AT85103159T priority Critical patent/ATE27350T1/de
Publication of EP0159534A1 publication Critical patent/EP0159534A1/fr
Application granted granted Critical
Publication of EP0159534B1 publication Critical patent/EP0159534B1/fr
Expired 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
    • F21V17/00—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
    • 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
    • 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
    • F21V7/04—Optical design
    • F21V7/06—Optical design with parabolic curvature
    • 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
    • F21Y2103/00—Elongate light sources, e.g. fluorescent tubes

Definitions

  • the invention relates to an elongated luminaire with at least one fluorescent lamp and a grid arranged underneath it, made of longitudinal reflectors parallel to the lamp and arranged crosswise, with a cross-section approximately V-shaped, reflecting transverse lamellae, the lamella legs of which are preferably parabolic in cross-section.
  • These luminaire grids form a glare protection, with which it is to be achieved in particular that, under a certain viewing angle, room lighting is essentially glare-free.
  • Luminaires according to the preamble of claim 1 are known from DE-PS 26 45 702. Their grids are formed by longitudinal reflectors parallel to the lamp and at right angles to them, in cross-section approximately V-shaped reflective transverse slats, the slat legs of which are parabolic in cross-section. With these grids, however, only a part of the luminous flux is directed. The vertically emerging luminous flux component of the lamp passes unhindered through the grids and can therefore lead to strong brightening in the areas below it, for example to reflective glare if appropriately arranged at a work station.
  • the aim of the grid is also to direct the luminous flux of the elongated fluorescent lamp in the desired directions. This is easily accomplished in the transverse direction of the lamp, since the fluorescent lamp, which is tubular in cross section, has a relatively small dimension in comparison to the grid cross section and thus approximately represents a point-shaped light source. In the longitudinal direction, the lamp is very large compared to the space between two lamellae. Each lamella segment is illuminated by a lamp section that is significantly longer than the lamella segment. The directivity of such a grid is therefore only very slight in the longitudinal direction.
  • each prism causes a beam splitting by refraction.
  • the prism as an optical system is very small compared to the light source. In addition to directing the light, which only takes place in the desired direction for a small solid angle range, occurs for the rest of the large solid angle range, considerable scattering and total reflection, so that a very large scattering component is superimposed on the desired light control .
  • the object of the invention is to direct the majority of the downward emerging luminous flux component of the lamp in the longitudinal direction with the grid in the lower half space in a luminaire of the type mentioned, so that only a very low luminous flux component directly and unguided by the lamp in the lamp longitudinal direction seen through the grid.
  • This object of the invention is solved on a lamp of the type mentioned at the outset, which is characterized in that a light guide plate is arranged obliquely upwards and almost adjacent to the lamp on one leg of each transverse lamella, which covers the space between the adjacent transverse lamella in the vertical projection .
  • the elongated lamp is subdivided into sections by the light guide plates reaching close to the lamp, each lamella or each lamella segment being illuminated only by a certain short lamp section.
  • the light-directing "optical system” thus only receives luminous flux from a limited solid angle range.
  • the position of the "luminous" solid angle range can be changed in relation to the light-directing optics. So the desired one Main emission direction can be predetermined in accordance with the desired light distribution of the luminaire, with no or no significant luminous flux component emerging directly from the grid. With the appropriate position of the cross slats with their light guide plates, these lights are therefore particularly suitable for use as workstation lights in connection with display devices, where increased demands are placed on glare-free properties.
  • FIG. 1 Under the lamp 1, which is not shown in the housing, a grid is placed below, which is formed from longitudinal reflectors 2 parallel to the lamp and transverse lamellae 3 which are arranged at right angles and cross-sectionally V-shaped.
  • the legs 31 and 32 of these transverse slats forming reflectors are parabolic in cross section.
  • the slats are preferably made of high-gloss or satin-structured mirror material.
  • Each on one leg 31 of the transverse lamellae 3 are arranged obliquely upwards at an angle c4 to the horizontal light guide plates 4, which extend almost to the lamp 1.
  • the light guide plates 4 are dimensioned such that they cover the space between adjacent transverse lamellae 3 in the vertical projection.
  • the rays 5 show, in the luminaire shown, light reflected primarily on the lamella leg 31 emerges from the grid in the longitudinal direction of the lamp 1. Due to the parallel arrangement of the light guide plates 4 to each other, a strong rectification of the reflected luminous flux is achieved.
  • Fig. 2 two grid sections are formed on a grid.
  • the light guide plates 4 "on the transverse lamellae 3" point obliquely to the top right, so that there is a direction of luminous flux approximately corresponding to the beam 5 ′′.
  • the light guide plates 4 'on the transverse lamellae 3' are directed obliquely to the left up to the lamp 1. The direction of luminous flux corresponding to the beam 5 ' results.
  • Asymmetrical luminous flux control is achieved with a grid light according to FIG. 3. All light guide plates 4 '' 'are directed parallel to each other and extend obliquely to the right up to the lamp 1. There is a directivity corresponding to the rays 5 '' '. The light distribution corresponds to the light distribution curve according to FIG. 3a.
  • a grid light according to FIG. 4 can be used in particular as a workplace light.
  • the grid of this lamp with the lamp 1 is again divided into two sections.
  • the light guide plates 4 '' '' ' are formed on the transverse lamellae 3' '' '' and extend obliquely to the left up to the lamp 1.
  • the indicated rays 5 '' '' and 5 ''''' ' show the pronounced preferred directions of the light distribution curve according to FIG. 4a. Such a light distribution is particularly desirable for workplace lighting.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Securing Globes, Refractors, Reflectors Or The Like (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Electroluminescent Light Sources (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
  • Resistance Heating (AREA)
  • Apparatus For Radiation Diagnosis (AREA)
  • Containers And Plastic Fillers For Packaging (AREA)
  • Optical Elements Other Than Lenses (AREA)
EP85103159A 1984-03-31 1985-03-19 Lampe de forme allongée Expired EP0159534B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85103159T ATE27350T1 (de) 1984-03-31 1985-03-19 Langgestreckte leuchte.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3412162 1984-03-31
DE3412162A DE3412162C1 (de) 1984-03-31 1984-03-31 Langgestreckte Leuchte

Publications (2)

Publication Number Publication Date
EP0159534A1 true EP0159534A1 (fr) 1985-10-30
EP0159534B1 EP0159534B1 (fr) 1987-05-20

Family

ID=6232313

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85103159A Expired EP0159534B1 (fr) 1984-03-31 1985-03-19 Lampe de forme allongée

Country Status (14)

Country Link
US (1) US4621309A (fr)
EP (1) EP0159534B1 (fr)
JP (1) JPS60246503A (fr)
KR (1) KR850006472A (fr)
AT (1) ATE27350T1 (fr)
AU (1) AU4070585A (fr)
BR (1) BR8501487A (fr)
CA (1) CA1248929A (fr)
DD (1) DD231839A5 (fr)
DE (1) DE3412162C1 (fr)
DK (1) DK143685A (fr)
FI (1) FI851284L (fr)
NO (1) NO851176L (fr)
ZA (1) ZA851681B (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0363700A2 (fr) * 1988-10-11 1990-04-18 Lic-Langmatz Gmbh Dispositif d'affichage lumineux
WO1990012245A1 (fr) * 1989-04-07 1990-10-18 Ifa Electric A/S Amelioration relative a des armatures d'eclairage pour des tubes fluorescents

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4729075A (en) * 1985-05-29 1988-03-01 Brass John R Constant zone reflector for luminaires and method
DE3729838A1 (de) * 1987-09-05 1989-03-23 Thorn Licht Gmbh Leuchte mit mindestens einer stabfoermigen leuchtstofflampe
US5008791A (en) * 1990-07-19 1991-04-16 Caferro Ronald N Low direct glare and wall wash parabolic lighting grid
JPH07161217A (ja) * 1993-12-07 1995-06-23 Shinjiyu Kagaku Kenkyusho:Kk 色彩評価用照明装置
JPH10502765A (ja) * 1995-02-14 1998-03-10 フィリップス エレクトロニクス ネムローゼ フェンノートシャップ 照明器具
US5958326A (en) * 1997-09-05 1999-09-28 Caferro; Ronald N. Process for producing a lighting louver
DE29903298U1 (de) 1999-02-24 1999-05-12 Trilux-Lenze Gmbh + Co Kg, 59759 Arnsberg Leuchte
US6139169A (en) * 1999-04-01 2000-10-31 Caferro; Ronald N. Encased louvers for outdoor lighting
US6626560B1 (en) 2000-11-22 2003-09-30 Ronald N. Caferro Lighting louver
US6702453B2 (en) 2001-10-26 2004-03-09 Birchwood Lighting, Inc. Flexible light fixture
GB2411947B (en) * 2004-03-11 2007-07-11 Sortex Ltd Light guide assembly
DE102004017686A1 (de) 2004-04-10 2005-11-03 Trilux-Lenze Gmbh + Co Kg Ergonomische Deckenleuchte
US7246924B2 (en) * 2004-11-22 2007-07-24 Sylvan R. Shemitz Designs, Inc. High performance lighting louvers and luminaires
US7360929B2 (en) * 2005-04-15 2008-04-22 Sylvan R. Shemitz Designs, Inc. Luminaire with multi-purpose mounting feature
US8297819B2 (en) * 2009-03-20 2012-10-30 Sylvan R. Shemitz Designs Incorporated Light pipe structure and luminaire with light pipe structure

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB892536A (en) * 1958-08-08 1962-03-28 A E I Lamp And Lighting Compan Improvements relating to lighting fittings
DE1809036A1 (de) * 1968-11-15 1970-06-04 Ernst Sulzer Blendschutzgehaeuse fuer Beleuchtungen

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2169531A (en) * 1937-07-12 1939-08-15 James G Donovan Headlight construction
DE1880828U (de) * 1963-06-11 1963-10-17 Siemens Ag Leuchte.
DE1622846A1 (de) * 1967-03-29 1970-11-26 Elek Ska Ab Exaktor Asymmetrischer Beleuchtungsschirm
CH473354A (de) * 1968-11-12 1969-05-31 Sulzer Ernst Blendschutzgehäuse für Beleuchtungen
DE2630556A1 (de) * 1976-07-07 1978-01-19 Shemitz Sylvan R Beleuchtungskoerper
DE2655702C3 (de) * 1976-12-09 1980-01-24 Trilux - Lenze Gmbh + Co Kg, 5760 Arnsberg Leuchtenraster für eine langgestreckte Lampe
US4238815A (en) * 1978-06-29 1980-12-09 Edison Price, Incorporated Recessed light fixture
DE2926202A1 (de) * 1979-06-29 1981-01-15 Alfred Korsch Raster, insbesondere leuchtenblendschutzraster fuer spiegelrasterleuchten
US4268897A (en) * 1979-07-23 1981-05-19 Templet Industries, Inc. Self-locking louver for lighting fixture
DE3005762C2 (de) * 1980-02-15 1981-10-29 Siemens AG, 1000 Berlin und 8000 München Leuchtenraster mit gekrümmten Außenreflektoren
DE3030080C2 (de) * 1980-08-08 1984-10-18 Siemens AG, 1000 Berlin und 8000 München Langgestreckte Arbeitsplatzleuchte
US4429354A (en) * 1982-09-29 1984-01-31 Emerson Electric Co. Lighting fixture louver
US4494175A (en) * 1984-01-09 1985-01-15 Gte Products Corporation Recessed lighting fixture with improved louver mounting

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB892536A (en) * 1958-08-08 1962-03-28 A E I Lamp And Lighting Compan Improvements relating to lighting fittings
DE1809036A1 (de) * 1968-11-15 1970-06-04 Ernst Sulzer Blendschutzgehaeuse fuer Beleuchtungen

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0363700A2 (fr) * 1988-10-11 1990-04-18 Lic-Langmatz Gmbh Dispositif d'affichage lumineux
EP0363700A3 (fr) * 1988-10-11 1990-08-08 Lic-Langmatz Gmbh Dispositif d'affichage lumineux
WO1990012245A1 (fr) * 1989-04-07 1990-10-18 Ifa Electric A/S Amelioration relative a des armatures d'eclairage pour des tubes fluorescents

Also Published As

Publication number Publication date
JPS60246503A (ja) 1985-12-06
FI851284L (fi) 1985-10-01
FI851284A0 (fi) 1985-03-29
DE3412162C1 (de) 1985-08-29
DD231839A5 (de) 1986-01-08
DK143685A (da) 1985-10-01
EP0159534B1 (fr) 1987-05-20
NO851176L (no) 1985-10-01
KR850006472A (ko) 1985-10-05
ZA851681B (en) 1985-10-30
AU4070585A (en) 1985-10-03
US4621309A (en) 1986-11-04
CA1248929A (fr) 1989-01-17
BR8501487A (pt) 1985-11-26
DK143685D0 (da) 1985-03-29
ATE27350T1 (de) 1987-06-15

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