CH453499A - Ceiling light for two fluorescent lamps arranged at the same height - Google Patents

Ceiling light for two fluorescent lamps arranged at the same height

Info

Publication number
CH453499A
CH453499A CH1289366A CH1289366A CH453499A CH 453499 A CH453499 A CH 453499A CH 1289366 A CH1289366 A CH 1289366A CH 1289366 A CH1289366 A CH 1289366A CH 453499 A CH453499 A CH 453499A
Authority
CH
Switzerland
Prior art keywords
reflector
ceiling light
lamps
same height
fluorescent lamps
Prior art date
Application number
CH1289366A
Other languages
German (de)
Inventor
Gorzel Walter
Dahlke Heinz
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
Publication of CH453499A publication Critical patent/CH453499A/en

Links

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
    • F21V7/00—Reflectors for light sources
    • F21V7/04—Optical design
    • 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
    • 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
    • F21V3/00—Globes; Bowls; Cover glasses
    • F21V3/02—Globes; Bowls; Cover glasses characterised by the shape
    • 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
    • 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
    • F21Y2113/00—Combination of light sources

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Description

  

  Deckenleuchte     für        zwei        in    gleicher Höhe angeordnete     Leuchtstofflampen       Die Erfindung betrifft eine Deckenleuchte für zwei  in gleicher Höhe angeordnete     Leuchstofflampen,    zwi  schen denen ein V-förmiger Reflektor angebracht und  jeder     Reflektorschenkel    seitlich oberhalb der Lampe in  der     Nähe    des Randes einer lichtdurchlässigen     Abdeck-          wanne    gehaltert ist. Es     sind    Innenleuchten bekannt, die  Reflektoren mit durchgehend gekrümmten oder durchge  hend ebenen     Reflektorschenkeln    haben.

   Leuchten mit       V-Reflektor    ohne gekrümmt auslaufende     Reflektor-          schenkelenden    besitzen trotz grosser Wannenbreite eine  gut ausgeleuchtete     Abdeckwanne,    aber einen schlechten  Wirkungsgrad.

   Dagegen haben Leuchten mit     V-ähnli-          chem        Reflektor    ohne Kielform für     flach    auslaufende       Reflektorschenkelenden    einen verhältnismässig guten       Leuchtenwirkungsgrad,    dafür jedoch eine     ungleichmäs-          sig    ausgeleuchtete     Abdeckwanne.    Insbesondere macht  sich eine     Dunkelzone    zwischen den Lampen störend  bemerkbar.  



  Nach der Erfindung ist eine Verbesserung dadurch  erzielt, dass die Kielkante des Reflektors tiefer als die  Lampen angeordnet ist und die oberhalb dieser Lampen  sich erstreckenden Teile der     Reflektorschenkel    ge  krümmt sind. Die erfindungsgemässe Leuchte zeichnet  sich trotz     kleinstmöglicher    Abmessungen     vorteilhaft     durch eine gleichmässige Ausleuchtung der     Abdeckwan-          ne    und zugleich durch einen ausgezeichneten Leuchten  wirkungsgrad aus.  



  In der Zeichnung ist die     erfindungsgemässe    Decken  leuchte in einem Vertikalquerschnitt beispielsweise wie  dergegeben.  



  Bei der abgebildeten Deckenleuchte ist zwischen  zwei in gleicher Höhe angeordneten     stabförmigen          Leuchtstofflampen    1, 2 ein V-förmiger Reflektor 3  eingesetzt, der an einer flachen Deckenplatte 4 gehaltert  ist. Der     Reflektorschenkel    5 bzw. 6 ist     seitlich    oberhalb  der Lampe 1 bzw. 2 in der Nähe des Randes 7 bzw. 8  einer lichtdurchlässigen     Abdeckwanne    9 gehaltert.

      Nach der Erfindung ist die Kielkante 10 des Reflek  tors 3 tiefer als die Lampen 1, 2 angeordnet, und die  oberhalb dieser Lampen 1, 2 sich erstreckenden     Teile     11, 12 der     Reflektorschenkel    5, 6 sind     gekrümmt.     Zweckmässig befindet sich der Reflektor 3 in der       Abdeckwanne    9, die     einen        C-förmigen    Querschnitt  aufweist und deren Höhe h praktisch gleich dem  doppelten Lampendurchmesser d ist. Weiter schliessen  die     Reflektorschenkel    5, 6 einen Winkel     a    ein, der  kleiner als 90  ist.

   Dabei können die Krümmungen der  Teile 11, 12 der     Reflektorschenkel    5, 6     Kreisbogenform     haben.  



  Im     rinnenförmigen    Hohlraum des     Reflektors    3 sind  die zum Betrieb der Lampen 1, 2 erforderlichen Drossel  spulen 13 angeordnet.



  Ceiling light for two fluorescent lamps arranged at the same height The invention relates to a ceiling light for two fluorescent lamps arranged at the same height, between which a V-shaped reflector is attached and each reflector leg is mounted laterally above the lamp near the edge of a translucent cover tub. There are indoor lights known that have reflectors with continuously curved or continuously flat reflector legs.

   Luminaires with a V reflector without curved reflector leg ends have a well-lit diffuser despite the large width of the diffuser, but have poor efficiency.

   In contrast, luminaires with a V-like reflector without a keel shape for flat reflector leg ends have a relatively good luminaire efficiency, but have an unevenly illuminated cover trough. In particular, a dark zone between the lamps is noticeable in a disturbing manner.



  According to the invention, an improvement is achieved in that the keel edge of the reflector is arranged lower than the lamps and the parts of the reflector legs extending above these lamps are curved. In spite of the smallest possible dimensions, the lamp according to the invention is advantageously distinguished by uniform illumination of the covering trough and at the same time by excellent lighting efficiency.



  In the drawing, the ceiling lamp according to the invention is shown in a vertical cross-section, for example.



  In the ceiling light shown, a V-shaped reflector 3 is inserted between two rod-shaped fluorescent lamps 1, 2 arranged at the same height, which reflector is held on a flat ceiling plate 4. The reflector leg 5 or 6 is supported laterally above the lamp 1 or 2 in the vicinity of the edge 7 or 8 of a transparent cover 9.

      According to the invention, the keel edge 10 of the reflector 3 is arranged lower than the lamps 1, 2, and the above these lamps 1, 2 extending parts 11, 12 of the reflector legs 5, 6 are curved. The reflector 3 is expediently located in the cover trough 9, which has a C-shaped cross section and the height h of which is practically equal to twice the lamp diameter d. The reflector legs 5, 6 also enclose an angle α which is smaller than 90.

   The curvatures of the parts 11, 12 of the reflector legs 5, 6 can have the shape of a circular arc.



  In the trough-shaped cavity of the reflector 3, the choke coils 13 required for operating the lamps 1, 2 are arranged.

Claims (1)

PATENTANSPRUCH Deckenleuchte für zwei in gleicher Höhe angeordne te Leuchtstofflampen, zwischen denen ein V-förmiger Reflektor angebracht und jeder Reflektorschenkel seit lich oberhalb der Lampe in der Nähe des Randes einer lichtdurchlässigen Abdeckwanne gehaltert ist, dadurch gekennzeichnet, dass die Kielkante (10) des Reflektors (3) tiefer als -die Lampen (1, 2) angeordnet ist und die oberhalb dieser Lampen (1, 2) sich erstreckenden Teile (11, 12) der Reflektorschenkel (5,<B>6</B>) gekrümmt sind. PATENT CLAIM Ceiling light for two fluorescent lamps arranged at the same height, between which a V-shaped reflector is attached and each reflector leg is held laterally above the lamp near the edge of a translucent cover tub, characterized in that the keel edge (10) of the reflector ( 3) is arranged lower than the lamps (1, 2) and the parts (11, 12) of the reflector legs (5, 6) extending above these lamps (1, 2) are curved. UNTERANSPRUCH Deckenleuchte nach Patentanspruch, dadurch ge kennzeichnet, dass sich der Reflektor (3) in der Abdeck- wanne (9) befindet, die einen C-förmigern Querschnitt aufweist und deren Höhe (h) praktisch gleich dem doppelten Lampendurchmesser (d) ist, wobei der Schen kelwinkel (x) des Reflektors kleiner als 90 ist und dessen Schenkelkrümmungen Kreisbogenform haben. SUBCLAIM Ceiling light according to claim, characterized in that the reflector (3) is located in the cover (9) which has a C-shaped cross section and the height (h) of which is practically equal to twice the lamp diameter (d), wherein the thigh angle (x) of the reflector is less than 90 and the curvatures of the thighs have the shape of a circular arc.
CH1289366A 1965-09-08 1966-09-06 Ceiling light for two fluorescent lamps arranged at the same height CH453499A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES0054046 1965-09-08

Publications (1)

Publication Number Publication Date
CH453499A true CH453499A (en) 1968-06-14

Family

ID=7489577

Family Applications (1)

Application Number Title Priority Date Filing Date
CH1289366A CH453499A (en) 1965-09-08 1966-09-06 Ceiling light for two fluorescent lamps arranged at the same height

Country Status (2)

Country Link
AT (1) AT263932B (en)
CH (1) CH453499A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0199203A2 (en) * 1985-04-16 1986-10-29 Siemens Aktiengesellschaft Lamp with an elongated hollow reflector

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0199203A2 (en) * 1985-04-16 1986-10-29 Siemens Aktiengesellschaft Lamp with an elongated hollow reflector
EP0199203A3 (en) * 1985-04-16 1988-09-21 Siemens Aktiengesellschaft Berlin Und Munchen Lamp with an elongated hollow reflector

Also Published As

Publication number Publication date
AT263932B (en) 1968-08-12

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