EP1275899A2 - Downlight mit Seitenreflektor - Google Patents
Downlight mit Seitenreflektor Download PDFInfo
- Publication number
- EP1275899A2 EP1275899A2 EP02014572A EP02014572A EP1275899A2 EP 1275899 A2 EP1275899 A2 EP 1275899A2 EP 02014572 A EP02014572 A EP 02014572A EP 02014572 A EP02014572 A EP 02014572A EP 1275899 A2 EP1275899 A2 EP 1275899A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- reflector
- reflector element
- light source
- light
- lamp
- 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
Links
- 239000000463 material Substances 0.000 claims abstract description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000005855 radiation Effects 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000004313 glare Effects 0.000 description 1
- 230000003760 hair shine Effects 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Images
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 lamp according to the preamble of Claim 1.
- a lamp of this type which has a pot-shaped main reflector, for the Radiation of an essentially narrow beam is set up for this purpose suitable for brightly illuminating relatively small areas.
- Such a downlight predominantly radiates the light downwards so that above a certain angle with respect to the horizontal no or almost none Light leaves the lamp. This will make for people within the area to be illuminated Glare from the mostly extremely bright lamps.
- This known recessed ceiling light 21 consists of a Luminaire housing 26, which sunk in the ceiling 25 of a room to be illuminated is.
- the light source is in the example shown by a compact fluorescent lamp 22 formed, which is arranged within a cup-shaped reflector 23.
- This The reflector 23 is initially designed such that the fluorescent lamp 22 emitted light rays to a relatively narrow and down directed light cones are bundled.
- the reflector region 24 opposite this wall is deformed in such a way that the light beams L 24 to L 26 striking it are directed against the wall.
- the reflector region 24 has a change in curvature such that the rays L 24 to L 26 incident on it are deflected more laterally in comparison to the rays L 21 to L 23 incident on the opposite region of the reflector 23 , This ensures that the upper wall area, which is otherwise in the shadow of the reflector 23, is also irradiated.
- the reflector 23 on the wall to be illuminated cut open opposite side and deformed in the desired manner.
- a cut-out reflector area can also be cut by a Additional reflector can be replaced with a different curvature. Both procedures however require an additional and costly work step in the Manufacture of the lamp.
- FIG. 6 Another known possibility, which is shown in FIG. 6, is to arrange a reflective insert 34 in front of a partial area of the lateral circumference 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 incident on it are laterally reflected in comparison 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 circular opening per se 35 of the reflector 33 of the lamp 31 through the crescent-shaped underside 36 of the Reflector insert 34 is partially covered, so that the reflector opening 35 to a Art Ellipse is deformed, which is visually considered disadvantageous.
- a third possibility is to join the illuminating wall opposite side of the reflector the reflector wall to be stepped, the individual steps amplifying the light against the Steer the wall.
- the opening of the reflector is not changed, but the manufacture of such a reflector is relatively expensive.
- the present invention is therefore based on the object of a possibility manage to direct part of the light emitted by a downlight laterally, whereby the desired solution should be characterized in that on the one hand is inexpensive and on the other hand visually appealing.
- the Exit opening of the reflector can be changed as little as possible.
- the present invention is characterized by a lamp which has the features of Has claim 1 solved.
- This has a pot-shaped main reflector, which for the radiation of an essentially narrow beam is set up, wherein in front of a partial area of the lateral circumference of the main reflector Reflector element is arranged.
- this is additional Reflector element made of a translucent material and is structured such that there is at least a portion of those striking the reflector element from the light source Rays of light totally reflected.
- the total reflection can be achieved by an appropriate design of the surface of the Reflector element can be achieved, for example, at its the light source have a prism structure, in particular a groove structure.
- the reflector element consists of a 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 made in a simple manner and arranged in the main reflector can be.
- a coating with a reflective material is not necessary so that the manufacturing cost is extremely low.
- the The reflector opening of the main reflector is only insignificant due to the additional element affected.
- the reflector element can with the Opening of the main reflector be flush but also consciously designed or be arranged so that it protrudes beyond the opening of the main reflector.
- Fig. 1 shows a first embodiment of the present invention in the form of a Downlights, which is designed as a recessed ceiling light 1 and its light housing 5 is accordingly sunk in the ceiling 8 of a room to be illuminated.
- a cup-shaped open at the bottom Main reflector 6, on the bottom side of a light source in the form of a Compact fluorescent lamp 2 is arranged inside the lamp housing 5 .
- the base 3 of the fluorescent lamp 2 is in not shown attached to the lamp housing 5, from the back of the Socket 3 leads a power line 4 to the general power supply.
- the compact fluorescent lamp 2 shown can, however, also be lamps other than Light source can be used.
- the main reflector 6 is designed such that it from the compact fluorescent lamp 2nd generated light into a relatively narrow beam that shines down is directed, bundles.
- an additional reflector element 7 is arranged in front of the circumference of the main reflector 6 opposite the wall, which is designed or curved in such a way that the light beams L 4 to L 6 which hit the reflector element 7 totally reflect and thereby compare with the light beams L 1 to L 3 striking the main reflector 6 are laterally deflected.
- the reflector element 7 is concavely curved and arranged inclined somewhat at an angle to the reflector wall.
- the opening of the main reflector 6 in In contrast to the known solution shown in Fig. 6 not covered, so that Viewing lamp 1 from below still appears circular. Since also part the light rays striking the reflector element 7 passes through it the area of the main reflector 6 behind the reflector element 7 is also illuminated, so that there is a visually appealing impression.
- the overall impression of The lamp according to the invention is further improved in that the reflector element 7 itself consists of a translucent material.
- a prism structure 9 on the side of the reflector element 7 facing away from the lamp 2 is provided.
- a total reflection angle is defined by the relationship between the refractive index of the reflector element 7 and the refractive index of air. Light rays that hit the interface when exiting the reflector element 7 at a larger angle than the total reflection angle are totally reflected, as shown in FIG. 3 with the light rays L 7 to L 9 .
- the shape of the elevations 10 is accordingly chosen such that a large part of the light rays striking the reflector element 7 from the lamp 2 is totally reflected on the rear side of the reflector element 7.
- the groove-shaped structure of the rear side of the reflector element 7 shown here instead of 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.
- the second embodiment of the lamp according to the invention shown in FIG. 4 differs from the embodiment in Fig. 1 in that Reflector element 7 protrudes significantly beyond the opening of the main reflector 6. This gives the lamp 1 an interesting appearance, the effect of However, reflector element 7 remains essentially unchanged. That means, also with In this exemplary embodiment, the main task of the reflector element 7 is to deflect the light rays of the lamp 2 laterally onto the wall to be illuminated.
- the lamp of the invention is characterized in that the desired light deflection is achieved.
- the means required for this are simple and inexpensive to manufacture.
- the transparent reflector element gives the lamp has an interesting and visually appealing look.
- the main reflector has other shapes instead of the one shown can accept. For example, it could also have the shape of an ellipse or a have 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)
Abstract
Description
- Fig. 1
- ein erstes Ausführungsbeispiel der erfindungsgemäßen Leuchte im seitlichen Schnitt;
- Fig. 2
- die Unterseite des in Fig. 1 dargestellten Ausführungsbeispiels;
- Fig. 3
- einen vergrößerten Ausschnitt des erfindungsgemäßen Reflektorelements;
- Fig. 4
- ein zweites Ausführungsbeispiel einer erfindungsgemäßen Leuchte; und
- Fig. 5 und 6
- bereits bekannte Leuchten.
Claims (8)
- Leuchte (1) mit einer Lichtquelle (2) und einem topfförmigen Hauptreflektor (6), der für die Abstrahlung eines im wesentlichen schmalen Strahlenbündels eingerichtet ist,
wobei vor einem Teilbereich des seitlichen Umfangs des Hauptreflektors (6) ein zusätzliches Reflektorelement (7) angeordnet ist,
dadurch gekennzeichnet, daß dieses Reflektorelement (7) aus einem lichtdurchlässigem Material besteht und derart strukturiert ist, daß es zumindest einen Teil der von der Lichtquelle (2) auf das Reflektorelement (7) treffenden Lichtstrahlen (L4 - L6) totalreflektiert. - Leuchte nach Anspruch 1,
dadurch gekennzeichnet, daß die der Lichtquelle (2) abgewandte Oberfläche des Reflektorelements (7) derart geformt ist, daß ein Teil der Lichtstrahlen (L4 - L6) beim Verlassen des Reflektorelements (7) totalreflektiert wird. - Leuchte nach Anspruch 2,
dadurch gekennzeichnet, daß das Reflektorelement (7) an seiner der Lichtquelle (2) abgewandten Seite eine Prismenstruktur (9) aufweist. - Leuchte nach Anspruch 3,
dadurch gekennzeichnet, daß das Reflektorelement (7) an seiner der Lichtquelle (2) abgewandten Seite eine Rillenstruktur aufweist. - Leuchte nach einem der vorherigen Ansprüche,
dadurch gekennzeichnet, daß das Reflektorelement (7) aus lichtdurchlässigem Kunststoff besteht. - Leuchte nach einem der vorherigen Ansprüche,
dadurch gekennzeichnet, daß das Reflektorelement (7) über die Öffnung des Hauptreflektors (6) hinausragt. - Leuchte nach einem der Ansprüche 1 bis 5,
dadurch gekennzeichnet, daß das Reflektorelement (7) mit der Öffnung des Hauptreflektors (6) bündig ist. - Leuchte nach einem der vorherigen Ansprüche,
dadurch gekennzeichnet, daß es sich um eine Deckeneinbauleuchte (1) handelt.
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 true EP1275899A2 (de) | 2003-01-15 |
| EP1275899A3 EP1275899A3 (de) | 2006-10-11 |
| EP1275899B1 EP1275899B1 (de) | 2009-09-16 |
Family
ID=7691193
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP02014572A Expired - Lifetime EP1275899B1 (de) | 2001-07-10 | 2002-07-01 | Downlight mit Seitenreflektor |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP1275899B1 (de) |
| AT (1) | ATE443228T1 (de) |
| DE (2) | DE10133360A1 (de) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1586815A3 (de) * | 2004-04-15 | 2005-11-16 | iGUZZINI ILLUMINAZIONE S.p.A. | Reflektoranordnung mit veränderbarer Reflexionsfläche, die sich in einem Beleuchtungsapparat befindet |
| NL1032767C2 (nl) * | 2006-10-30 | 2008-05-06 | Spanninga Metaal | Inrichting voor het verschaffen van verlichting langs een ondergrond. |
| CN104214676A (zh) * | 2013-05-29 | 2014-12-17 | 海洋王(东莞)照明科技有限公司 | 气体放电灯及其反射组件 |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0802368A2 (de) | 1996-04-18 | 1997-10-22 | ZUMTOBEL LICHT GmbH | Leuchte mit einer insbesonderen kleinvolumigen Lampe |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE185591C (de) * | ||||
| 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 |
-
2001
- 2001-07-10 DE DE10133360A patent/DE10133360A1/de not_active Ceased
-
2002
- 2002-07-01 EP EP02014572A patent/EP1275899B1/de not_active Expired - Lifetime
- 2002-07-01 DE DE50213844T patent/DE50213844D1/de not_active Expired - Lifetime
- 2002-07-01 AT AT02014572T patent/ATE443228T1/de active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0802368A2 (de) | 1996-04-18 | 1997-10-22 | ZUMTOBEL LICHT GmbH | Leuchte mit einer insbesonderen kleinvolumigen Lampe |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1586815A3 (de) * | 2004-04-15 | 2005-11-16 | iGUZZINI ILLUMINAZIONE S.p.A. | Reflektoranordnung mit veränderbarer Reflexionsfläche, die sich in einem Beleuchtungsapparat befindet |
| NL1032767C2 (nl) * | 2006-10-30 | 2008-05-06 | Spanninga Metaal | Inrichting voor het verschaffen van verlichting langs een ondergrond. |
| EP1918634A1 (de) * | 2006-10-30 | 2008-05-07 | Spanninga Metaal B.V. | Vorrichtung zur Bereitstellung von Licht entlang einer Bodenoberfläche |
| CN104214676A (zh) * | 2013-05-29 | 2014-12-17 | 海洋王(东莞)照明科技有限公司 | 气体放电灯及其反射组件 |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| ATE443228T1 (de) | 2009-10-15 |
| DE50213844D1 (de) | 2009-10-29 |
| EP1275899B1 (de) | 2009-09-16 |
| DE10133360A1 (de) | 2003-01-23 |
| EP1275899A3 (de) | 2006-10-11 |
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