EP0696705A1 - Dispositif d'éclairage indirect - Google Patents

Dispositif d'éclairage indirect Download PDF

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Publication number
EP0696705A1
EP0696705A1 EP94112443A EP94112443A EP0696705A1 EP 0696705 A1 EP0696705 A1 EP 0696705A1 EP 94112443 A EP94112443 A EP 94112443A EP 94112443 A EP94112443 A EP 94112443A EP 0696705 A1 EP0696705 A1 EP 0696705A1
Authority
EP
European Patent Office
Prior art keywords
light source
lamp
reflector arrangement
luminaire
light
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
Application number
EP94112443A
Other languages
German (de)
English (en)
Other versions
EP0696705B1 (fr
Inventor
Janusz Teklak
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.)
Siemens AG
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
Priority to AT94112443T priority Critical patent/ATE144606T1/de
Application filed by Siemens AG filed Critical Siemens AG
Priority to DE59400919T priority patent/DE59400919D1/de
Priority to EP94112443A priority patent/EP0696705B1/fr
Priority to PCT/EP1995/003133 priority patent/WO1996005609A1/fr
Priority to EP95929809A priority patent/EP0722617B1/fr
Priority to AT95929809T priority patent/ATE161359T1/de
Priority to DE59501128T priority patent/DE59501128D1/de
Publication of EP0696705A1 publication Critical patent/EP0696705A1/fr
Application granted granted Critical
Publication of EP0696705B1 publication Critical patent/EP0696705B1/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
    • 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
    • F21V14/00—Controlling the distribution of the light emitted by adjustment of elements
    • F21V14/02—Controlling the distribution of the light emitted by adjustment of elements by movement of light sources
    • 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
    • F21V14/00—Controlling the distribution of the light emitted by adjustment of elements
    • F21V14/04—Controlling the distribution of the light emitted by adjustment of elements by movement of reflectors
    • 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
    • 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
    • F21V7/005—Reflectors for light sources with an elongated shape to cooperate with linear light sources
    • 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 secondary lamp according to the preamble of claim 1.
  • Secondary lights which are also referred to as indirect lights, are known in a large number of embodiments, for example from EP-B1-0 201 926.
  • These types of luminaires have in common that a light source is arranged within a main reflector arrangement, the outer edges of which delimit a light outlet opening of the luminaire, which is shielded in the direction of this light outlet opening by a counter-reflector which encompasses the light source to such an extent that no direct light component can exit directly from the luminaire .
  • This means that the light source is not visible to a viewer of the luminaire itself, and therefore a high luminance of the light source cannot immediately cause glare to the viewer.
  • the main reflector is often designed in cross-section as a conical cut surface or composed of parts of conical cut surfaces, these conical cut surfaces colliding above this light source in a light axis of symmetry in which the light source is also arranged.
  • the smaller counter or auxiliary reflector located below the light source it is thereby achieved that all light emitted by the light source is directed either directly or after, if necessary, multiple reflections onto the main reflector, from where, after being reflected again, through the light exit opening of the lamp on the counter reflector exits.
  • the counter-reflector of known secondary lights is designed and arranged in relation to the light source in such a way that light striking it is reflected and, if possible, directed past the light source onto the main reflector.
  • the main reflector is formed directly above the light source so that light striking it there is preferably not reflected back into the light source in order to avoid light losses which would reduce the luminaire efficiency. Nevertheless, the luminaire efficiency in known secondary lighting is not completely satisfactory, because for the reasons described it is inevitable that the light emitted by the light source may be reflected several times at the auxiliary and / or main reflector before it can exit through the light exit opening.
  • the present invention is therefore based on the object of providing a further embodiment of a secondary luminaire of the type mentioned at the outset, which directs light with as little loss as possible of the light emitted by the light source to the auxiliary reflector and from there after only one possible reflection through the light exit opening of the luminaire allowed in the usage plane.
  • the counter-reflector known in secondary luminaires is designed to form an auxiliary reflector arrangement which has at least two mirror surfaces, one of which, like the known secondary reflector, completely shields the light source in the direction of the light exit opening of the luminaire.
  • the second mirror surface of this auxiliary reflector arrangement is facing away from the light exit opening with respect to the light source, that is to say is arranged above the light source.
  • this additional mirror surface of the auxiliary reflector arrangement which is located inside the light, initially appears to be superfluous and rather disadvantageous, since in this case a much larger proportion of the light emitted by the light source - in contrast to known secondary lights - is additionally reflected on this inner mirror surface.
  • this auxiliary reflector arrangement are designed with respect to the light source and are aligned with respect to one another in such a way that all light emitted by the light source is directed towards the main reflector arrangement essentially transversely to the axis of symmetry of the light after reflection of this auxiliary reflector arrangement at most once, from where, with a corresponding curve shape of the surfaces of the main reflector arrangement, it can exit through the light exit opening of the luminaire after in turn directed only once.
  • FIG. 1 A basic illustration of a secondary lamp is shown in cross section in FIG.
  • This luminaire has a main reflector 1, which consists of two identical reflector shells 11 and 12 with a contour in the form of a conic section, these reflector shells 11, 12 being arranged mirror-symmetrically with respect to a luminaire symmetry axis 2 at a predetermined distance from one another.
  • the outer Edges of the reflector shells 11 and 12 of the main reflector 1 delimit a light exit opening 3 of the secondary light, which lies in a plane perpendicular to the light symmetry axis 2.
  • auxiliary reflector arrangement 4 is shown in the interior of the main reflector 1, facing away from the light exit opening 3.
  • This auxiliary reflector arrangement 4 has mirror surfaces 41 and 42, which in this example are designed in the contour as conic section lines. These are mutually penetrating parabolas, the penetration points lying in the axis of symmetry of light 2 and the common parabolic axis being perpendicular and transverse to the axis of symmetry 2 of light.
  • a light source 5 is arranged in the focal plane 43 of this auxiliary reflector arrangement 4 that contains this parabola axis and is perpendicular to the axis of symmetry 2 of the light, which is deliberately shown almost point-like in this basic illustration of FIG. This is intended to illustrate that this type of luminaire is preferably used, although not exclusively approximately point-shaped or line-shaped light sources are to be used with advantage.
  • the light source 5 is integrated in the auxiliary reflector arrangement 4, i. H. both lamp components together form a modular unit in the secondary lamp.
  • a double arrow 6 schematically indicates that this modular unit consisting of auxiliary reflector arrangement 4 and light source 5 integrated therein is arranged to be longitudinally displaceable along the lamp axis of symmetry 2 with respect to the main reflector 1. In this way, the light distribution curve of the secondary lamp can be adjusted as desired, as will be explained in more detail in further embodiments.
  • Light rays 71 and 72 are shown as examples.
  • the light rays 72 it is illustrated how light that emerges at larger radiation angles, in relation to the focal plane 43, is first reflected once on one of the mirror surfaces 41 and 42 of the auxiliary reflector arrangement 4 and only then onto the main reflector 1 , here in the example the reflector shell 12 strikes and exits from there after renewed reflection through the light exit opening 3 of the secondary lamp.
  • the examples of the beam path shown make it clear that the light emerging from the light source 5 is preferably directed transversely to the axis of symmetry 2 of the light by the funnel-shaped configuration of the auxiliary reflector arrangement 4, wherein it is reflected at most once before it hits the main reflector 1.
  • all light emitted by the light source 5 is reflected at most twice before it passes through the light exit opening 3 of the secondary lamp.
  • the cross-sectional shape of the mirror surfaces 41 and 42 of the auxiliary reflector arrangement 4 created by the penetration of the parabolas ensures that no light can be reflected back into the light source 5 itself by the auxiliary reflector arrangement 4.
  • FIG. 2 uses another example to explain the design options that this luminaire structure provides.
  • matching or comparable luminaire elements are identified by the same reference numerals, so that repetitions in the description can be avoided.
  • the auxiliary reflector arrangement 4 is used in this further exemplary embodiment formed from mirror surfaces 41 and 42, the contours of which are interpenetrating ellipses, the interpenetration points in turn lying on the light axis of symmetry 2.
  • the two reflector shells 11 and 12 of the main reflector 1 are pulled apart a little further.
  • the luminaire shape in this exemplary embodiment is relatively flatter and shows, by way of example, a light distribution which emits a rather narrow beam compared to the embodiment according to FIG.
  • FIG. 3 Another embodiment is shown in FIG. 3.
  • This example is intended to illustrate that the mirror surfaces 41 and 42 of the auxiliary reflector arrangement 4 can also be designed completely different while maintaining the lighting principle. While in the examples according to FIG. 1 and FIG. 2 the mirror surfaces 41, 42 of the auxiliary reflector arrangement 4 are mirror-symmetrical with respect to the focal plane 43, the mirror surfaces 41 and 42 in the embodiment according to FIG. 3 have a completely different contour. All that remains here is the symmetry of the main reflector 1 and the auxiliary reflector arrangement 4 with respect to the light symmetry axis 2.
  • This example shows that it is easily possible, while maintaining the lighting principle of the lamp structure, the auxiliary reflector arrangement 4 freely to the light intensity distribution of a lamp selected for a specific application as light source 5, d. H. especially to adapt to their burner geometry. This already shows in principle that this type of luminaire can be used expediently in conjunction with a wide variety of light sources and that the person skilled in the art is thus offered a large number of design options.
  • FIG. 4 shows the embodiment of the secondary lamp according to FIG. 3 again.
  • this example is intended to show how the light distribution curve of the secondary lamp changes when one the position of the modular unit of the luminaire formed from the auxiliary reflector arrangement 4 and the light source 5 is shifted relative to the main reflector 1 by a longitudinal movement in the direction of the luminaire symmetry axis 2.
  • this modular unit 4, 5 of the secondary lamp is drawn deeper into the main reflector 1, ie it is at a greater distance from the light exit surface 3 of the lamp.
  • the light distribution curve of the secondary lamp changes due to the conical contour of the reflector shells 11 and 12 of the main reflector 1 from a more wide-beam characteristic (FIG. 3) to a preferably narrow-beam characteristic (FIG. 4).
  • FIG. 5 shows an example of the application of this principle of the lamp structure described above with reference to FIGS. 1 to 4 for a secondary lamp in a linear lamp.
  • a rod-shaped fluorescent lamp possibly also a compact fluorescent lamp, comes into consideration as the light source 5.
  • the auxiliary reflector arrangement 4 with the mirror surfaces 41 and 42 corresponds approximately to the embodiment described with reference to FIG. 1.
  • a rectangular luminaire is shown schematically in FIG. 6, in which case the main reflector 1 is accordingly composed of four reflector shells.
  • the light source 5 is arranged in a horizontal position, it being designed as a high-pressure lamp, for example of the HQI-TS type.
  • the auxiliary reflector arrangement 4 is composed of mirror surfaces 41 and 42, which are arranged perpendicularly and transversely to the light axis of symmetry.
  • the mirror surfaces 41, 42 are formed from intersecting conical surfaces, so that parallel to the axis of the light source 5 to the two of them Sides each have a cutting or penetrating edge running perpendicular to the axis of symmetry of light 2. This provides the prerequisite for directing all light emitted by the light source 5 away from it in the direction of one of the reflector shells of the main reflector 1.
  • FIG. 7 shows an embodiment of a secondary lamp which differs in certain details from the exemplary embodiments described above.
  • a circular lamp is selected as an example of the luminaire shape.
  • the main reflector which is rotationally symmetrical here in this exemplary embodiment, could, however, also be composed of a large number of facet mirrors in such a way that a regular polygon would result in a cross section of the lamp in a plane perpendicular to the axis of symmetry of the lamp 2.
  • the vertical position of the modular light deflection unit formed from the auxiliary reflector arrangement 4 and the light source 5 is more important than the previously described embodiments.
  • a high pressure lamp e.g. B. of the type HQI-TS or HQI-T or a similar lamp with a relatively short burner.
  • this vertical arrangement of the light source 5 means that it must be passed through the mirror surfaces 41 and 42 of the auxiliary reflector arrangement.
  • the mirror surfaces 41 and 42 which here are also rotationally symmetrical - corresponding to the shape of the main reflector 1 - it is then no longer possible to use the mirror surfaces of the auxiliary reflector arrangement 4 up to the two theoretical penetration points of the rotating bodies of the mirror surfaces in the axis of symmetry 2 of the light . That is, In this embodiment, the mirror surfaces 41 and 42 must be cut off beforehand in order to be able to pass the light source 5 through.
  • this design-related deviation from an ideal shape of the auxiliary reflector arrangement 4 appears - at least theoretically - to be a certain disadvantage. In fact, however, this is not the case.
  • the luminaire efficiency is hardly noticeably affected because the advantages of the vertical arrangement far outweigh them. This is due to the fact that such short-arc lamps of the type mentioned above and similar high-intensity lamps have a butterfly-like light distribution, viewed in a plane containing the lamp longitudinal axis. In other words, this lamp type only emits an almost negligible proportion of light at maximum light emission in the direction perpendicular and transverse to the lamp longitudinal axis in the direction near the axis.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Discharge Lamps And Accessories Thereof (AREA)
  • Circuit Arrangements For Discharge Lamps (AREA)
  • Circuit Arrangement For Electric Light Sources In General (AREA)
  • Fastening Of Light Sources Or Lamp Holders (AREA)
EP94112443A 1994-08-09 1994-08-09 Dispositif d'éclairage indirect Expired - Lifetime EP0696705B1 (fr)

Priority Applications (7)

Application Number Priority Date Filing Date Title
DE59400919T DE59400919D1 (de) 1994-08-09 1994-08-09 Sekundärleuchte
EP94112443A EP0696705B1 (fr) 1994-08-09 1994-08-09 Dispositif d'éclairage indirect
AT94112443T ATE144606T1 (de) 1994-08-09 1994-08-09 Sekundärleuchte
EP95929809A EP0722617B1 (fr) 1994-08-09 1995-08-07 Lampe a micro-ondes
PCT/EP1995/003133 WO1996005609A1 (fr) 1994-08-09 1995-08-07 Lampe a micro-ondes
AT95929809T ATE161359T1 (de) 1994-08-09 1995-08-07 Mikrowellenlampe
DE59501128T DE59501128D1 (de) 1994-08-09 1995-08-07 Mikrowellenlampe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP94112443A EP0696705B1 (fr) 1994-08-09 1994-08-09 Dispositif d'éclairage indirect

Publications (2)

Publication Number Publication Date
EP0696705A1 true EP0696705A1 (fr) 1996-02-14
EP0696705B1 EP0696705B1 (fr) 1996-10-23

Family

ID=8216189

Family Applications (2)

Application Number Title Priority Date Filing Date
EP94112443A Expired - Lifetime EP0696705B1 (fr) 1994-08-09 1994-08-09 Dispositif d'éclairage indirect
EP95929809A Expired - Lifetime EP0722617B1 (fr) 1994-08-09 1995-08-07 Lampe a micro-ondes

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP95929809A Expired - Lifetime EP0722617B1 (fr) 1994-08-09 1995-08-07 Lampe a micro-ondes

Country Status (4)

Country Link
EP (2) EP0696705B1 (fr)
AT (2) ATE144606T1 (fr)
DE (2) DE59400919D1 (fr)
WO (1) WO1996005609A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1262711A2 (fr) 2001-06-01 2002-12-04 Siteco Beleuchtungstechnik GmbH Luminaire et luminaire avec un boítier supplémentaire
AU2003209844B2 (en) * 2002-03-20 2007-07-19 Christopher Alan Haines A lighting fixture including two reflectors
EP2309174A1 (fr) * 2009-10-06 2011-04-13 Combustion and Energy S.r.l. Dispositif d'éclairage

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AUPS119302A0 (en) * 2002-03-20 2002-04-18 Haines, Christopher Alan A lighting fixture including two reflectors
DE102011090136B4 (de) * 2011-12-29 2013-07-25 Trilux Gmbh & Co. Kg LED-Leuchte
CN105202416A (zh) * 2015-09-24 2015-12-30 广东生迪科技有限公司 一种可调角度的轨道灯

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH190264A (de) * 1936-09-25 1937-04-15 H Frauenfelder Johann Beleuchtungskörper für indirekte, blendungsfreie Raumbeleuchtung.
DE3807584A1 (de) * 1988-03-08 1989-09-21 Stierlen Maquet Ag Operationsleuchte

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62105355A (ja) * 1985-10-31 1987-05-15 Mitsubishi Electric Corp マイクロ波放電光源装置
US5334913A (en) * 1993-01-13 1994-08-02 Fusion Systems Corporation Microwave powered lamp having a non-conductive reflector within the microwave cavity

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH190264A (de) * 1936-09-25 1937-04-15 H Frauenfelder Johann Beleuchtungskörper für indirekte, blendungsfreie Raumbeleuchtung.
DE3807584A1 (de) * 1988-03-08 1989-09-21 Stierlen Maquet Ag Operationsleuchte

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1262711A2 (fr) 2001-06-01 2002-12-04 Siteco Beleuchtungstechnik GmbH Luminaire et luminaire avec un boítier supplémentaire
AU2003209844B2 (en) * 2002-03-20 2007-07-19 Christopher Alan Haines A lighting fixture including two reflectors
EP2309174A1 (fr) * 2009-10-06 2011-04-13 Combustion and Energy S.r.l. Dispositif d'éclairage

Also Published As

Publication number Publication date
EP0722617B1 (fr) 1997-12-17
WO1996005609A1 (fr) 1996-02-22
EP0696705B1 (fr) 1996-10-23
EP0722617A1 (fr) 1996-07-24
DE59501128D1 (de) 1998-01-29
DE59400919D1 (de) 1996-11-28
ATE161359T1 (de) 1998-01-15
ATE144606T1 (de) 1996-11-15

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