EP0061527A1 - Armature lumineuse suspendue - Google Patents

Armature lumineuse suspendue Download PDF

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Publication number
EP0061527A1
EP0061527A1 EP81109267A EP81109267A EP0061527A1 EP 0061527 A1 EP0061527 A1 EP 0061527A1 EP 81109267 A EP81109267 A EP 81109267A EP 81109267 A EP81109267 A EP 81109267A EP 0061527 A1 EP0061527 A1 EP 0061527A1
Authority
EP
European Patent Office
Prior art keywords
lamp
mirror
center
mirrors
pendant
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
EP81109267A
Other languages
German (de)
English (en)
Other versions
EP0061527B1 (fr
Inventor
Joachim Dipl.-Ing. Leibig
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Priority to AT81109267T priority Critical patent/ATE11693T1/de
Publication of EP0061527A1 publication Critical patent/EP0061527A1/fr
Application granted granted Critical
Publication of EP0061527B1 publication Critical patent/EP0061527B1/fr
Expired legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S8/00—Lighting devices intended for fixed installation
    • F21S8/04—Lighting devices intended for fixed installation intended only for mounting on a ceiling or the like overhead structures
    • F21S8/06—Lighting devices intended for fixed installation intended only for mounting on a ceiling or the like overhead structures by suspension
    • 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
    • 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 a pendant lamp according to the upper handle of claim 1.
  • Such a pendant lamp known from DE-Gbm 79 10 659 was distinguished by very good shielding and - thanks to the reflecting reflectors - by a high luminaire operating efficiency.
  • the shielding angle - measured against the horizontal - is equal to or greater than 30 ° to 40 °; it indicates the area in which the luminance of the luminaire is below 200 cd per m 2 .
  • part of the luminous flux of the lamp emerges through two upper light outlet openings arranged laterally from it and serves to brighten the ceiling, which is spaced 50 to 60 cm above the luminaire.
  • Lighting efficiency is understood to mean the ratio of the luminous flux hitting the useful plane to the sum of the luminous fluxes of all lamps installed in the lighting system.
  • the invention has for its object to develop a pendant lamp of the type mentioned with good shielding and reflecting reflectors so that a much higher lighting efficiency can be achieved ..
  • a luminaire according to the invention In a luminaire according to the invention, more than 50% of the luminous flux is emitted upwards, with a very broad light distribution curve. Contrary to the previous assumptions of the professional world, this means that lighting efficiency can be achieved which is even higher in rooms with a K value greater than 1.5 than in a system with only downward-shining, equally shielded mirror lights!
  • the K value is a parameter of the room dimensions and is defined by the product of length times width divided by the sum of length and width multiplied by the height. In rooms with a height of 2.8 m to 3 m, the aforementioned condition is met for an area larger than 50 m 2 . In smaller rooms - common single rooms - the same lighting efficiency can still be achieved as with exclusively direct-luminaires.
  • the unexpectedly high lighting efficiency is primarily a result of the very high lighting efficiency, which is over 88% here.
  • Directly radiating mirror lights on the other hand, have a lighting operation efficiency of only about 70 to 72%. The reason for this is that the upward luminous flux of the lamp can only be directed to the plane of use with relatively large losses.
  • the pendant lamp has a housing 2 with a frame 20, within each of which a side reflector 3 is arranged on opposite longitudinal walls; each of these side reflectors consists of a sub-mirror 32, which ends at the top in a border edge 30, which adjoins then an oppositely curved upper mirror 31 connects.
  • the upper and lower mirrors of opposite side reflectors are bent so that they radiate crosswise through the upper light exit opening 21 and through the lower light exit opening 22, respectively.
  • each side reflector has essentially the same course as known darklight mirrors; it is therefore essentially a parabola with a focal length of 45 mm and a main axis inclined at 35 ° to the vertical, the focal point being at the center M of the lamp 1.
  • the lower mirror 32 ends below a horizontal tangential plane on the lamp 1.
  • the upper mirror 31 adjoining it runs essentially on a circle with the radius R, the center point N of which passes through the center of the lamp 1 Vertical plane and in the upper light exit plane 21. This radius is about three times the diameter of the lamp, which is 26 mm.
  • the maximum of the light distribution curve generated by this top mirror is 120 °.
  • transverse slats 4 are arranged in a known form between the lower mirrors.
  • the upper light exit opening like the lower one, extends over the entire width of the housing 2.
  • the lower part of this center mirror has a substantially V-shaped cross section and is formed by auxiliary mirrors 51, the lower edge 50 of which only extends to the transverse slats 4.
  • the curvature of these auxiliary mirrors runs according to a parabola with a focal length of 17 mm, the main axis of which passes through the center M of the respectively adjacent lamp 1 or 1 'and forms an angle of 20 ° with the vertical.
  • the distance A from the center M of each lamp from the symmetry plane S and the distance B from its center from the horizontal plane passing through the lower edge 50 of the center mirror 5 are dimensioned such that the shielding angle ⁇ 'determined thereby is at least as large as that required and by the side reflectors 3 given shielding angles /.
  • the auxiliary mirror 51 ends at the top somewhat below the horizontal plane passing through the center M of the lamp.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)
EP81109267A 1981-03-27 1981-10-29 Armature lumineuse suspendue Expired EP0061527B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT81109267T ATE11693T1 (de) 1981-03-27 1981-10-29 Pendelleuchte.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19813112253 DE3112253A1 (de) 1981-03-27 1981-03-27 Pendelleuchte
DE3112253 1981-03-27

Publications (2)

Publication Number Publication Date
EP0061527A1 true EP0061527A1 (fr) 1982-10-06
EP0061527B1 EP0061527B1 (fr) 1985-02-06

Family

ID=6128526

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81109267A Expired EP0061527B1 (fr) 1981-03-27 1981-10-29 Armature lumineuse suspendue

Country Status (3)

Country Link
EP (1) EP0061527B1 (fr)
AT (1) ATE11693T1 (fr)
DE (1) DE3112253A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3346786A1 (de) * 1983-12-23 1985-08-22 Maschinenfabrik Georg Kiefer Gmbh, 7000 Stuttgart Haengeleuchte
EP0677697A1 (fr) * 1994-04-15 1995-10-18 THORN LICHT GmbH Appareil d'éclairage pour plan de travail
WO2001065171A3 (fr) * 2000-02-29 2002-02-28 Lt Licht Technik Gmbh Ensemble reflecteur pour une lampe

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4001839A1 (de) * 1990-01-23 1991-07-25 Adp Automaten Gmbh Pendelleuchte mit einem eine lichtaustrittsoeffnung aufweisenden leuchtengehaeuse
DE102014119616A1 (de) 2014-12-23 2016-06-23 Siteco Beleuchtungstechnik Gmbh LED-Linsenkörper zur Erzeugung eines Direkt- und Indirektlichtanteils

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3158327A (en) * 1961-09-15 1964-11-24 Herst Lighting Corp Fluorescent lighting unit
DE1963881A1 (de) * 1969-12-20 1971-06-24 Licentia Gmbh Leuchte mit Reflexschicht-Leuchtstofflampe
DE7910659U1 (de) * 1979-04-11 1979-07-12 Siemens Ag, 1000 Berlin Und 8000 Muenchen Pendelleuchte mit teilweise nach oben strahlender optik

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2341895A (en) * 1940-07-12 1944-02-15 Morris B Beck Fluorescent tube lighting fixture
FR1074976A (fr) * 1953-02-21 1954-10-11 Dispositif d'éclairage permettant d'éviter l'éblouissement et de contrôler le flux lumineux
DE3014336A1 (de) * 1980-04-15 1981-10-22 Trilux-Lenze Gmbh + Co Kg, 5760 Arnsberg Nach oben und unten abstrahlende leuchte

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3158327A (en) * 1961-09-15 1964-11-24 Herst Lighting Corp Fluorescent lighting unit
DE1963881A1 (de) * 1969-12-20 1971-06-24 Licentia Gmbh Leuchte mit Reflexschicht-Leuchtstofflampe
DE7910659U1 (de) * 1979-04-11 1979-07-12 Siemens Ag, 1000 Berlin Und 8000 Muenchen Pendelleuchte mit teilweise nach oben strahlender optik

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3346786A1 (de) * 1983-12-23 1985-08-22 Maschinenfabrik Georg Kiefer Gmbh, 7000 Stuttgart Haengeleuchte
EP0677697A1 (fr) * 1994-04-15 1995-10-18 THORN LICHT GmbH Appareil d'éclairage pour plan de travail
WO2001065171A3 (fr) * 2000-02-29 2002-02-28 Lt Licht Technik Gmbh Ensemble reflecteur pour une lampe

Also Published As

Publication number Publication date
EP0061527B1 (fr) 1985-02-06
DE3112253A1 (de) 1982-10-28
DE3112253C2 (fr) 1987-06-04
ATE11693T1 (de) 1985-02-15

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