EP0306603B1 - Leuchte mit mindestens einer stabförmigen Leuchtstofflampe - Google Patents

Leuchte mit mindestens einer stabförmigen Leuchtstofflampe Download PDF

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Publication number
EP0306603B1
EP0306603B1 EP88105381A EP88105381A EP0306603B1 EP 0306603 B1 EP0306603 B1 EP 0306603B1 EP 88105381 A EP88105381 A EP 88105381A EP 88105381 A EP88105381 A EP 88105381A EP 0306603 B1 EP0306603 B1 EP 0306603B1
Authority
EP
European Patent Office
Prior art keywords
light
lamp
covering
lamellae
cover plates
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
Application number
EP88105381A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0306603A2 (de
EP0306603A3 (en
Inventor
Manfred Grimm
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.)
Thorn Licht GmbH
Original Assignee
Thorn Licht 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6335357&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0306603(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Thorn Licht GmbH filed Critical Thorn Licht GmbH
Priority to AT88105381T priority Critical patent/ATE83547T1/de
Publication of EP0306603A2 publication Critical patent/EP0306603A2/de
Publication of EP0306603A3 publication Critical patent/EP0306603A3/de
Application granted granted Critical
Publication of EP0306603B1 publication Critical patent/EP0306603B1/de
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
    • 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 lamp with at least one rod-shaped fluorescent lamp with the features according to the preamble of the main claim.
  • a grid-like design of the reflectors is intended, in particular, to create a lamp which is suspended above a workplace and is intended to illuminate the workplace with as little glare as possible.
  • the absence of glare is particularly important because there is often reflective material on the work table, such as foils or catalogs with glossy paper. These materials reflect light radiated directly from above, so that the user is dazzled.
  • Such workplace lights are usually hung so that they are at a height of about 1.80 m and in the longitudinal direction above the work table, so that the person sitting there looks at the long side of the lamp.
  • a luminaire with a fluorescent lamp in which several parallel, louvre-like spaced and overlapping plates are provided which extend in the longitudinal direction of the lamp to shield the light source.
  • This known luminaire is attached directly to a wall and has no luminaire grid, so that it cannot be considered for use as a workplace luminaire with targeted light control in the direction of the workplace.
  • the blind-like plates are arranged one behind the other in such a way that only reflected light but no direct light can emerge through them.
  • the lamp is shielded by strip-like spaced-apart elements with a circular cross-sectional cross-section, the gaps between them being covered by elements of an analog design.
  • there is no luminaire grid that guarantees controlled light emission for the reflection-free illumination of the workplace.
  • the object of the present invention is to provide a luminaire of the type mentioned at the outset, which has a high degree of efficiency with regard to the lighting of the workplace, while at the same time providing reflection-free and high-contrast illumination of the workplace.
  • a luminaire with the characterizing features of claim 1, in which the cover plates adjoining an edge of the base of the transverse lamellae are arranged parallel to the lamp and only extend over part of the respective space between the transverse lamellae and in which the remaining space in each case in the is essentially covered by a cover strip arranged parallel to the lamp between the lamp and the transverse lamellae in the vertical projection.
  • a luminaire In the case of a luminaire according to the invention, light can emerge directly from the luminaire from the outer regions of the luminaire at oblique angles between the cover plates and cover strips, this light striking the workplace due to the oblique angle of incidence so that there is no reflected glare for the person working there .
  • Steep direct rays of light cannot, however, emerge, so that the working person is not dazzled even when looking directly into the lamp from the workplace.
  • Part of the light in this luminaire emerges from the top of the upper half-space and is reflected by the ceiling and leads to a diffuse amount of light at the workplace.
  • the lower half-space light only emerges in the desired directions, which is achieved by cover plates, cover strips and luminaire grids, this light component serving to provide high-contrast illumination of the workplace.
  • the direct vertical light failure in the spaces between the transverse slats is prevented on the one hand by the lower cover plates at the level of the reflectors themselves, and on the other hand by the upper cover strips arranged between the lamp and the transverse slats.
  • the extent and the angle at which the light from the lamp strikes the transverse lamella and is reflected from there is essentially determined by the width dimension and the overlap dimension of the upper cover strips.
  • the lower cover plates can be designed so that they can reflect the light directly received by the lamp upwards, where it can exit through an opening between the two longitudinal reflectors and experience a further downward effective reflection on the ceiling .
  • the upper cover strips can be designed in the same way to reflect upwards.
  • the lamp as shown in FIGS. 1 and 2, has a rod-shaped fluorescent lamp 1, the light of which is emitted by reflectors arranged in a grid.
  • the lamp 1 is associated with a longitudinal reflector 2, which consists of two branches curved in a parabolic shape. These branches are connected in the transverse direction by numerous reflectors 3 or transverse lamellae, each of which consist of two equally parabolic-curved legs in a V-arrangement.
  • the lower cover plates 4a are formed on the top as reflectors, they are also able to reflect light, as shown at 6 upwards. This light can emerge in an opening 2a between the two longitudinal reflectors 2 and is reflected on the ceiling, so that it also reaches the workplace in this way.
  • the upper cover strips (4b) can be designed to be reflective upwards.
  • the cover plates 14a of the transverse slats 13 are directed to the left, while in the other half of the lamp the cover strips 14b are directed to the right in the transverse slats.
  • the upper cover strips 15a which in turn cover the intermediate spaces, are assigned to the lower cover plates 14a. In the middle free area, direct light emission is prevented by an appropriately wide top cover strip 15b.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Securing Globes, Refractors, Reflectors Or The Like (AREA)
  • Optical Elements Other Than Lenses (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)
EP88105381A 1987-09-05 1988-04-05 Leuchte mit mindestens einer stabförmigen Leuchtstofflampe Expired - Lifetime EP0306603B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88105381T ATE83547T1 (de) 1987-09-05 1988-04-05 Leuchte mit mindestens einer stabfoermigen leuchtstofflampe.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3729838 1987-09-05
DE19873729838 DE3729838A1 (de) 1987-09-05 1987-09-05 Leuchte mit mindestens einer stabfoermigen leuchtstofflampe

Publications (3)

Publication Number Publication Date
EP0306603A2 EP0306603A2 (de) 1989-03-15
EP0306603A3 EP0306603A3 (en) 1989-11-23
EP0306603B1 true EP0306603B1 (de) 1992-12-16

Family

ID=6335357

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88105381A Expired - Lifetime EP0306603B1 (de) 1987-09-05 1988-04-05 Leuchte mit mindestens einer stabförmigen Leuchtstofflampe

Country Status (5)

Country Link
EP (1) EP0306603B1 (enrdf_load_stackoverflow)
AT (1) ATE83547T1 (enrdf_load_stackoverflow)
DE (1) DE3729838A1 (enrdf_load_stackoverflow)
ES (1) ES2037757T3 (enrdf_load_stackoverflow)
GR (1) GR3007386T3 (enrdf_load_stackoverflow)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050201103A1 (en) * 2004-03-12 2005-09-15 Honeywell International Inc. Luminaires with batwing light distribution
CN103968265A (zh) * 2013-01-24 2014-08-06 野菜工房农业科技有限公司 照明装置

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH179876A (de) 1934-10-24 1935-09-30 Licht & Metall A G Beleuchtungskörper.
DE1622846A1 (de) * 1967-03-29 1970-11-26 Elek Ska Ab Exaktor Asymmetrischer Beleuchtungsschirm
DE1809036A1 (de) * 1968-11-15 1970-06-04 Ernst Sulzer Blendschutzgehaeuse fuer Beleuchtungen
DE3412162C1 (de) * 1984-03-31 1985-08-29 Trilux-Lenze Gmbh + Co Kg, 5760 Arnsberg Langgestreckte Leuchte

Also Published As

Publication number Publication date
ATE83547T1 (de) 1993-01-15
DE3729838A1 (de) 1989-03-23
ES2037757T3 (es) 1993-07-01
EP0306603A2 (de) 1989-03-15
GR3007386T3 (enrdf_load_stackoverflow) 1993-07-30
EP0306603A3 (en) 1989-11-23
DE3729838C2 (enrdf_load_stackoverflow) 1992-07-09

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