EP1275899B1 - Projecteur encastré avec réflecteur latéral - Google Patents

Projecteur encastré avec réflecteur latéral Download PDF

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Publication number
EP1275899B1
EP1275899B1 EP02014572A EP02014572A EP1275899B1 EP 1275899 B1 EP1275899 B1 EP 1275899B1 EP 02014572 A EP02014572 A EP 02014572A EP 02014572 A EP02014572 A EP 02014572A EP 1275899 B1 EP1275899 B1 EP 1275899B1
Authority
EP
European Patent Office
Prior art keywords
reflector
reflector element
light
luminaire
light source
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
EP02014572A
Other languages
German (de)
English (en)
Other versions
EP1275899A2 (fr
EP1275899A3 (fr
Inventor
Klaus Vamberszky
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.)
ZUMTOBEL LIGHTING GmbH
Original Assignee
Zumtobel Lighting GmbH Austria
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 Zumtobel Lighting GmbH Austria filed Critical Zumtobel Lighting GmbH Austria
Publication of EP1275899A2 publication Critical patent/EP1275899A2/fr
Publication of EP1275899A3 publication Critical patent/EP1275899A3/fr
Application granted granted Critical
Publication of EP1275899B1 publication Critical patent/EP1275899B1/fr
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
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S8/00—Lighting devices intended for fixed installation
    • F21S8/02—Lighting devices intended for fixed installation of recess-mounted type, e.g. downlighters
    • F21S8/026—Lighting devices intended for fixed installation of recess-mounted type, e.g. downlighters intended to be recessed in a ceiling or like overhead structure, e.g. suspended ceiling
    • 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
    • F21V13/04—Combinations of only two kinds of elements the elements being reflectors and refractors
    • 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
    • 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
    • F21V7/0091—Reflectors for light sources using total internal reflection
    • 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
    • F21V7/22—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors
    • 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 present invention relates to a luminaire according to the preamble of claim 1.
  • a luminaire of this type which has a cup-shaped main reflector, which is set up for the emission of a substantially narrow beam, is suitable for illuminating relatively small areas brightly.
  • Such lights are sunk in a ceiling and thereby aligned vertically, so that they radiate all the light down.
  • such luminaires are therefore generally referred to as "downlights”.
  • Such a downlight radiates predominantly steeply downwards, so that above a certain angle with respect to the horizontal no or almost no light leaves the luminaire. As a result, glare is avoided by the usually extremely bright lamps for people within the room to be illuminated.
  • This known recessed ceiling light 21 consists of a light housing 26, which is sunk in the ceiling 25 of a room to be illuminated.
  • the light source is formed in the illustrated example by a compact fluorescent lamp 22 which is disposed within a cup-shaped reflector 23.
  • This reflector 23 is initially designed so that the light emitted by the fluorescent lamp 22 light beams are bundled into a relatively narrow and downwardly directed light cone.
  • the reflector region 24 lying opposite this wall is deformed in such a way that the light rays L 24 to L 26 striking it are directed against the wall.
  • reflector region 24 has such a changed curvature that the incident on it beams L 24 to L 26 are deflected more laterally compared to the incident on the opposite region of the reflector 23 rays L 21 to L 23 . This ensures that the upper wall area otherwise in the shadow of the reflector 23 is also irradiated.
  • the reflector 23 is cut open at the side opposite the wall to be illuminated and deformed in the desired manner.
  • a cut-out reflector region can be replaced by an additional reflector with a different curvature. Both approaches, however, require an additional and costly operation in the manufacture of the lamp.
  • FIG. 6 Another known way in Fig. 6 is shown, is to arrange a reflective insert 34 in front of a portion of the lateral periphery of the reflector 33.
  • the curvature of this reflective insert 34 is in turn such that the light beams L 34 to L 36 emitted by the lamp 32 and impinging on it are reflected laterally compared to the light beams L 31 to L 33 incident on the opposite region of the reflector 33.
  • the disadvantage of this embodiment is that the per se circular opening 35 of the reflector 33 of the lamp 31 is partially covered by the crescent-shaped bottom 36 of the reflector insert 34, so that the reflector opening 35 is deformed into a kind of ellipse, which is optically considered disadvantageous ,
  • a third possibility - not shown - is to make the reflector wall step-shaped on the side of the reflector opposite the wall to be illuminated, with the individual steps increasingly directing the light against the wall.
  • the opening of the reflector is not changed, but the production of such a reflector is relatively expensive.
  • an additional reflector is attached to a portion of the outside of the main reflector such that the additional reflector reflects light onto the wall to be illuminated.
  • the main reflector in the corresponding area must have a window that does not have a reflection layer. During the manufacturing process, the corresponding area of the main reflector must therefore be covered during the spraying of the reflection layer.
  • the present invention is therefore based on the object to provide a way to judge a part of the light emitted by a downlight side, with the desired solution should be characterized in that they on the one hand inexpensive and visually appealing on the other hand.
  • the exit opening of the reflector should be changed as little as possible.
  • a luminaire having the features of claim 1.
  • This has a cup-shaped main reflector, which is set up for the emission of a substantially narrow beam, wherein an additional reflector element is arranged in front of a portion of the lateral periphery on the inside of the main reflector.
  • this additional reflector element consists of a light-transmissive material and is structured in such a way that it totally reflects at least part of the light rays striking the reflector element from the light source.
  • the total reflection can be achieved by a corresponding design of the surface of the reflector element, for example, this may have on its side facing away from the light source a prism structure, in particular a groove structure.
  • the reflector element is made of translucent plastic, so that e.g. can be produced by injection molding.
  • the solution according to the invention is characterized in that the additional reflector element can be easily manufactured and arranged in the main reflector.
  • a coating with a reflective material is not necessary, so that the manufacturing costs are extremely low.
  • the reflector opening of the main reflector is only insignificantly influenced by the additional element. Further, since a part of the rays outgoing from the light source can pass through the reflector element and strike the main reflector, a visually appealing overall impression is obtained.
  • the reflector element may be flush with the opening of the main reflector but also deliberately configured or arranged such that it projects beyond the opening of the main reflector.
  • Fig. 1 shows a first embodiment of the present invention in the form of a downlight, which is designed as a ceiling light fixture 1 and the lamp housing 5 is accordingly sunk in the ceiling 8 of a room to be illuminated.
  • a downwardly open cup-shaped main reflector 6 within the lamp housing 5 is a downwardly open cup-shaped main reflector 6, on whose bottom side a light source in the form of a compact fluorescent lamp 2 is arranged.
  • the base 3 of the fluorescent lamp 2 is fixed in a manner not shown on the lamp housing 5, from the back of the base 3, a power line 4 leads to the general power supply.
  • the compact fluorescent lamp 2 shown here instead of the compact fluorescent lamp 2 shown here, however, other lamps can be used as the light source.
  • the main reflector 6 is designed so that it focuses the light generated by the compact fluorescent lamp 2 to a relatively narrow beam which is directed downwards.
  • an additional reflector element 7 is arranged in front of the wall opposite the circumference of the main reflector 6, which is designed or curved so that the incident of the lamp 2 on the reflector element 7 light beams L 4 to L 6 is totally reflected and thereby compared to the incident on the main reflector 6 light beams L 1 to L 3 are deflected laterally.
  • the reflector element 7 is concavely curved and inclined slightly inclined with respect to the reflector wall.
  • the opening of the main reflector 6 in contrast to the in Fig. 6 shown known solution not covered, so that the light 1 consider from below still appears circular. Further, since a part of the incident on the reflector element 7 rays of light passes through this, also the lying behind the reflector element 7 region of the main reflector 6 is illuminated, so that there is a visually appealing impression.
  • the overall impression of the lamp according to the invention is further improved by the fact that the reflector element 7 itself consists of a light-transmitting material.
  • the total reflection of the light beams is achieved by providing a prism structure 9 on the rear side, ie on the side of the reflector element 7 facing away from the lamp 2.
  • a prism structure 9 formed by triangular in cross-section elevations 10, which together form a groove structure.
  • a total reflection angle is defined.
  • Light rays which strike the boundary surface at a larger angle than the total reflection angle on emerging from the reflector element 7 are totally reflected, as shown in FIG Fig. 3 is illustrated by the light beams L 7 to L 9 .
  • the shape of the elevations 10 is accordingly selected such that a majority of the light rays impinging on the reflector element 7 from the lamp 2 is totally reflected at the rear side of the reflector element 7.
  • the groove-shaped structure of the rear side of the reflector element 7 shown here however, other prism structures would also be conceivable with which the desired total reflection is achieved.
  • FIG. 4 illustrated second embodiment of the lamp according to the invention differs from the embodiment in Fig. 1 in that the reflector element 7 projects clearly beyond the opening of the main reflector 6. This gives the lamp 1 an interesting appearance, the effect of the reflector element 7, however, remains substantially unchanged. That is, even in this embodiment, the main task of the reflector element 7 is to divert the light rays of the lamp 2 laterally on the wall to be illuminated.
  • the luminaire according to the invention is characterized in that the desired light deflection is achieved in a simple manner.
  • the funds required for this purpose are simple and inexpensive to manufacture.
  • the transparent reflector element gives the lamp an interesting and visually appealing appearance.
  • the main reflector instead of the illustrated form can take other forms. For example, it could also have the shape of an ellipse or a rectangular or elongated shape.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Optical Elements Other Than Lenses (AREA)
  • Planar Illumination Modules (AREA)

Claims (8)

  1. Lampe (1) avec une source lumineuse (2), un réflecteur principal (6) en forme de pot, prévu pour diffuser un faisceau de rayons essentiellement étroit, et un élément réflecteur complémentaire (7) réalisé en matériau transparent,
    caractérisée
    en ce que l'élément réflecteur complémentaire (7) est disposé devant une zone partielle de la périphérie latérale sur la face intérieure du réflecteur principal (6) et est structuré de manière à réfléchir totalement au moins une partie des rayons lumineux (L4-L6) de la source lumineuse (2) incidents sur l'élément réflecteur (7).
  2. Lampe selon la revendication 1,
    caractérisée
    en ce que la surface de l'élément réflecteur (7) éloignée de la source lumineuse (2) est formée de manière à réfléchir totalement une partie des rayons lumineux (L4-L6) à la sortie de l'élément réflecteur (7).
  3. Lampe selon la revendication 2,
    caractérisée
    en ce que l'élément réflecteur (7) présente une structure prismatique (9) sur sa face éloignée de la source lumineuse (2).
  4. Lampe selon la revendication 3,
    caractérisée
    en ce que l'élément réflecteur (7) présente une structure rainurée sur sa face éloignée de la source lumineuse (2).
  5. Lampe selon l'une des revendications précédentes,
    caractérisée
    en ce que l'élément réflecteur (7) est en matière synthétique transparente.
  6. Lampe selon l'une des revendications précédentes,
    caractérisée
    en ce que l'élément réflecteur (7) dépasse de l'ouverture du réflecteur principal (6).
  7. Lampe selon l'une des revendications 1 à 5,
    caractérisée
    en ce que l'élément réflecteur (7) est de niveau avec l'ouverture du réflecteur principal (6).
  8. Lampe selon l'une des revendications précédentes,
    caractérisée
    en ce qu'il s'agit d'une lampe (1) encastrable au plafond.
EP02014572A 2001-07-10 2002-07-01 Projecteur encastré avec réflecteur latéral Expired - Lifetime EP1275899B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10133360A DE10133360A1 (de) 2001-07-10 2001-07-10 Downlight mit Seitenreflektor
DE10133360 2001-07-10

Publications (3)

Publication Number Publication Date
EP1275899A2 EP1275899A2 (fr) 2003-01-15
EP1275899A3 EP1275899A3 (fr) 2006-10-11
EP1275899B1 true EP1275899B1 (fr) 2009-09-16

Family

ID=7691193

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02014572A Expired - Lifetime EP1275899B1 (fr) 2001-07-10 2002-07-01 Projecteur encastré avec réflecteur latéral

Country Status (3)

Country Link
EP (1) EP1275899B1 (fr)
AT (1) ATE443228T1 (fr)
DE (2) DE10133360A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITMI20040172U1 (it) * 2004-04-15 2004-07-15 Iguzzini Illuminazione Assieme riflettore a superficie riflette modificabile in un apparecchio di illuminazione
NL1032767C2 (nl) * 2006-10-30 2008-05-06 Spanninga Metaal Inrichting voor het verschaffen van verlichting langs een ondergrond.
CN104214676B (zh) * 2013-05-29 2016-09-07 海洋王（东莞）照明科技有限公司 气体放电灯及其反射组件

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE185591C (fr) *
DE8208617U1 (de) * 1982-03-26 1982-08-12 Eurolicht Lichtarchitectuur B.V., 5070 Naarden Reflektor fuer eine lichtquelle
DE3436778A1 (de) * 1984-01-27 1985-08-01 Westfälische Metall Industrie KG Hueck & Co, 4780 Lippstadt Leuchte zum grossflaechigen und gleichmaessigen ausleuchten von wohn- und arbeitsraeumen oder dergleichen
DE4237192A1 (de) * 1992-11-04 1994-05-05 Hoffmeister Leuchten Kg Elektrische Leuchte
US5535110A (en) * 1995-02-16 1996-07-09 Cooper Industries, Inc. Ceiling mounted wallwash light fixture
DE19615388A1 (de) * 1996-04-18 1997-10-23 Zumtobel Licht Leuchte mit einer insbesondere kleinvolumigen Lampe

Also Published As

Publication number Publication date
DE10133360A1 (de) 2003-01-23
EP1275899A2 (fr) 2003-01-15
DE50213844D1 (de) 2009-10-29
ATE443228T1 (de) 2009-10-15
EP1275899A3 (fr) 2006-10-11

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