EP0676584A1 - Lampe à réflecteur - Google Patents

Lampe à réflecteur Download PDF

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Publication number
EP0676584A1
EP0676584A1 EP95103916A EP95103916A EP0676584A1 EP 0676584 A1 EP0676584 A1 EP 0676584A1 EP 95103916 A EP95103916 A EP 95103916A EP 95103916 A EP95103916 A EP 95103916A EP 0676584 A1 EP0676584 A1 EP 0676584A1
Authority
EP
European Patent Office
Prior art keywords
light
housing
rear wall
channel
plate
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.)
Withdrawn
Application number
EP95103916A
Other languages
German (de)
English (en)
Inventor
Achim Dr. Willing
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.)
Ansorg GmbH
Original Assignee
Ansorg 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 Ansorg GmbH filed Critical Ansorg GmbH
Publication of EP0676584A1 publication Critical patent/EP0676584A1/fr
Withdrawn legal-status Critical Current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
    • F21V13/00—Producing particular characteristics or distribution of the light emitted by means of a combination of elements specified in two or more of main groups F21V1/00 - F21V11/00
    • F21V13/02—Combinations of only two kinds of elements
    • F21V13/10—Combinations of only two kinds of elements the elements being reflectors and screens
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S6/00—Lighting devices intended to be free-standing
    • F21S6/002—Table lamps, e.g. for ambient lighting
    • 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
    • F21V11/00—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00
    • F21V11/16—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00 using sheets without apertures, e.g. fixed
    • 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
    • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/50—Cooling arrangements
    • 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
    • F21V7/0008—Reflectors for light sources providing for indirect lighting
    • F21V7/0016—Reflectors for light sources providing for indirect lighting on lighting devices that also provide for direct lighting, e.g. by means of independent light sources, by splitting of the light beam, by switching between both lighting modes
    • 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
    • F21V7/0025—Combination of two or more reflectors for a single light source
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2131/00—Use or application of lighting devices or systems not provided for in codes F21W2102/00-F21W2121/00
    • F21W2131/40—Lighting for industrial, commercial, recreational or military use
    • F21W2131/402—Lighting for industrial, commercial, recreational or military use for working places
    • 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
    • F21Y2103/00—Elongate light sources, e.g. fluorescent tubes
    • F21Y2103/30—Elongate light sources, e.g. fluorescent tubes curved
    • F21Y2103/37—U-shaped

Definitions

  • the invention relates to a reflector lamp with a housing which has a rear wall provided on the inside with a mirror surface, with a punctiform or short linear light source, in particular a compact fluorescent lamp, and with at least one plate arranged in the housing at a channel-forming distance from the rear wall, which has a mirror surface on its front side assigned to the light source and a light-absorbing surface on its rear side, wherein the light channel delimited by the plate and the rear wall has a light entry gap near the light source and a light exit window on the edge of the housing and the front of the plate provided with the mirror surface is assigned to a light exit opening on the housing side for illuminating a close range.
  • a reflector lamp with the described features is known from EP-A-0 030 740.
  • the plate connects to the light exit opening at an angle of 60 °.
  • the light exit opening and the light exit window of the light channel are arranged in one plane.
  • the reflected light enters parallel light rays from the light exit window and the light exit opening.
  • the range of the directly emerging light portion is reduced by the plate inserted in the housing.
  • the known reflector lamp enables largely glare-free illumination of a relatively narrow area.
  • Reflector lights with a housing that has a rear surface provided on the inside with a mirror surface, and with a punctiform or short linear light source, in particular a compact fluorescent lamp, are widely used in practice as table, floor and pendant lights.
  • the rear mirror surface is concavely curved or is composed of flat mirror surface sections which are inclined at an angle of 30 ° to 45 ° to the horizontal.
  • the reflector lights must be arranged at a relatively small distance from the surface to be illuminated. As part of the known measures, they are used to illuminate a close range. A glare-free illumination of large areas, for example desks and conference tables, is not possible to a satisfactory degree.
  • ceiling lights with long fluorescent tubes which have lengths of one meter and more, anti-glare measures in the form of parallel or lattice-shaped slats are known and are described, for example, in DE-A-38 28 694.
  • the slats are aligned vertically.
  • Such ceiling lights give a uniform Suitable diffuse light from room lighting. They are not suitable for workplace lighting and for brightly illuminating a table surface, for example a conference table.
  • the known lamellae or lattice-shaped shields are unsuitable for point light sources and for short compact fluorescent lamps, since the light cone is severely restricted.
  • the invention has for its object to provide a suitable for workplace lighting reflector lamp of the type described, with which a wide, uniform and glare-free object illumination is possible at a small distance from an object to be illuminated.
  • the invention teaches that for the purpose of illuminating a region lying further close to the near area, the plate connects at an angle of 15 ° to 45 ° to the light outlet opening on the housing side and the light exit window of the light channel delimited by the plate on the jacket side of the Housing is arranged and angularly adjacent to the light outlet opening on the housing side.
  • the light exit window and the light exit opening on the housing side lie in different, intersecting planes.
  • the jacket-side light exit window and the light exit opening on the underside of the housing are preferably arranged at right angles to one another. A glare-free light exit from the light channel is guaranteed if the light exit window and the The light entry gap of the light channel does not overlap in the projection.
  • the projection plane is the plane orthogonal to the lower light exit opening.
  • the section of the rear wall assigned to the light channel and the plate preferably run parallel or diverging outwards at an opening angle of at most 10 °.
  • the light entry gap should be arranged laterally from the light source, however, in comparison to the latter at a greater distance from the light exit opening on the housing side near the rear wall of the housing.
  • the rear wall is expediently curved concavely in the region of the light entry slit, with light bundling to form the light channel.
  • the light emerging from the light channel is directed and has a different orientation than the reflected light leaving the light outlet opening on the housing side.
  • Claims 6 and 7 teach further designs of the lamp according to the invention.
  • the housing 1 of the reflector lamp shown in the figures has a trough-shaped design and has a rear wall 3, which is provided on the inside completely with a mirror surface 2, and end walls 4 adjoining it.
  • the end walls 4 can also be provided with mirror surfaces on the inside.
  • a light source 5 in the form of a compact fluorescent lamp is arranged on an end wall 4 and extends parallel to the rear wall 3.
  • a plate 6 can also be seen, which is arranged in the housing 1 at a channel-forming distance from the rear wall 3. It has a mirror surface 2 on its front side assigned to the light source and a light-absorbing, preferably matt black surface 7 on its rear side.
  • the light channel 8 delimited by the plate 6 and the rear wall 3 has a light entry gap 9 near the light source 5 and a light exit surface 10 on the housing edge.
  • the front side of the plate 6 provided with the mirror surface 2 is assigned to a light exit opening 11 on the housing side. This part of the luminaire with light outlet opening 11 on the underside serves to illuminate a close range.
  • the light exit window 10 of the light channel 8 is arranged on the long side of the housing 1, at right angles to the light exit opening 11 on the underside of the housing. A further lying area adjoining the close-up area can be illuminated by the light channel 8.
  • the light channel 8 is delimited by flat wall surfaces.
  • the plate 6 and the associated section of the rear wall 3 are at an angle ⁇ of 15 ° to 45 °, preferably approximately 30 °, to the light exit opening 11 on the housing side arranged.
  • the rear wall 3 and the plate 6 run parallel or, as in the exemplary embodiment, diverging outwards at an opening angle of at most 10 °.
  • the light entry gap 9 is arranged to the side of the light source 5, but in comparison to this at a greater distance from the light exit opening 11 on the housing side near the rear wall 3 of the housing 1. It can be seen from the figures that the light exit window 10 and the light entry slit 9 do not overlap in the projection, specifically in a projection plane P orthogonal to the lower light exit opening 11.
  • the illumination of the distant area is further improved in that the rear wall 3 is concavely curved in the area of the light entry gap 9, with light bundling to the light channel 8 taking place.
  • a conventional air gap 12 is provided above the light source 5 for cooling the light source 5.
  • the light source 5 is arranged in the plane of symmetry 13 of a symmetrically designed housing 1.
  • a plate 6 with a mirror surface 2 on the front and a light-absorbing surface 7 on the rear is arranged on both sides of the plane of symmetry 13 in the manner already described.
  • the reflector lamp shown in the figures can primarily be used as a table lamp, floor lamp or low-hanging lamp. A wide, glare-free It is possible to illuminate objects such as desks. Light sources with high light intensity can be used without the risk of glare.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
EP95103916A 1994-04-07 1995-03-17 Lampe à réflecteur Withdrawn EP0676584A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4411891 1994-04-07
DE4411891A DE4411891A1 (de) 1994-04-07 1994-04-07 Reflektorleuchte

Publications (1)

Publication Number Publication Date
EP0676584A1 true EP0676584A1 (fr) 1995-10-11

Family

ID=6514766

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95103916A Withdrawn EP0676584A1 (fr) 1994-04-07 1995-03-17 Lampe à réflecteur

Country Status (2)

Country Link
EP (1) EP0676584A1 (fr)
DE (1) DE4411891A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100424581C (zh) * 2004-06-14 2008-10-08 佳能株式会社 摄影用照明装置和摄影装置

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29608354U1 (de) * 1996-05-08 1996-06-27 Trilux-Lenze Gmbh + Co Kg, 59759 Arnsberg Arbeitsplatzleuchte

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR801784A (fr) * 1935-02-11 1936-08-17 Perfectionnement aux dispositifs d'éclairage
US2560281A (en) * 1945-11-29 1951-07-10 Sight Light Corp Luminaire with glare shielding means for producing an optimum distribution of light on a work surface
EP0017146A1 (fr) * 1979-03-30 1980-10-15 Siemens Aktiengesellschaft Lampe de bureau à tube fluorescent
US4683526A (en) * 1985-11-06 1987-07-28 Jac Jacobsen A/S Asymmetric lamp

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4293901A (en) * 1979-12-17 1981-10-06 Esquire, Inc. Reflector system having sharp light cutoff characteristics
AU8239182A (en) * 1981-06-15 1982-12-23 Esquire, Inc. Lighting fixture with relamping socket apparatus
DE3828694A1 (de) * 1988-08-24 1990-03-01 Philips Patentverwaltung Leuchte

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR801784A (fr) * 1935-02-11 1936-08-17 Perfectionnement aux dispositifs d'éclairage
US2560281A (en) * 1945-11-29 1951-07-10 Sight Light Corp Luminaire with glare shielding means for producing an optimum distribution of light on a work surface
EP0017146A1 (fr) * 1979-03-30 1980-10-15 Siemens Aktiengesellschaft Lampe de bureau à tube fluorescent
US4683526A (en) * 1985-11-06 1987-07-28 Jac Jacobsen A/S Asymmetric lamp

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100424581C (zh) * 2004-06-14 2008-10-08 佳能株式会社 摄影用照明装置和摄影装置

Also Published As

Publication number Publication date
DE4411891A1 (de) 1995-10-12

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