EP0496920A1 - Appareil d'éclairage - Google Patents

Appareil d'éclairage Download PDF

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Publication number
EP0496920A1
EP0496920A1 EP91101297A EP91101297A EP0496920A1 EP 0496920 A1 EP0496920 A1 EP 0496920A1 EP 91101297 A EP91101297 A EP 91101297A EP 91101297 A EP91101297 A EP 91101297A EP 0496920 A1 EP0496920 A1 EP 0496920A1
Authority
EP
European Patent Office
Prior art keywords
lamp
reflector
mirror
fluorescent
fluorescent lamps
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
EP91101297A
Other languages
German (de)
English (en)
Other versions
EP0496920B1 (fr
Inventor
Hans-Joachim Dr. Schmidt
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
Application filed by Siemens AG filed Critical Siemens AG
Priority to DE91101297T priority Critical patent/DE59100856D1/de
Priority to AT91101297T priority patent/ATE100187T1/de
Priority to EP91101297A priority patent/EP0496920B1/fr
Publication of EP0496920A1 publication Critical patent/EP0496920A1/fr
Application granted granted Critical
Publication of EP0496920B1 publication Critical patent/EP0496920B1/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
    • 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
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V23/00—Arrangement of electric circuit elements in or on lighting devices
    • F21V23/04—Arrangement of electric circuit elements in or on lighting devices the elements being switches
    • 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
    • F21V7/005—Reflectors for light sources with an elongated shape to cooperate with linear 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
    • F21V7/00—Reflectors for light sources
    • F21V7/04—Optical design
    • 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
    • F21Y2113/00—Combination of light sources

Definitions

  • the invention relates to mirror luminaires with two fluorescent lamps arranged one above the other and parallel to one another in the main beam direction, in which a channel-shaped main reflector extends above the fluorescent lamps and on the side of their light outlet opening also in the extension of the fluorescent lamps a plurality of transverse lamellae arranged at predetermined intervals are provided and in which By suitable dimensioning of the main reflector and transverse lamellae as well as by suitable mutual arrangement of the main reflector, fluorescent lamps and transverse lamellae, predetermined radiation conditions for the light of the fluorescent lamps in the transverse direction (C0-180 o plane) and longitudinal direction (C90-270 o plane) are met.
  • Mirror lights and indirect mirror lights are used for indoor lighting.
  • both wide-beam and narrow-beam versions are used, for the maximum values of the vertical illumination angle and the horizontal cut-off angle both in the C0-180 o plane as well as in the C90-270 o level.
  • the height of the lamp holders can be made mechanically adjustable, in order then to arrange the lamps higher or lower within the reflector, depending on the type of characteristic desired.
  • single-lamp versions of such lamps they can also be designed with at least two fluorescent lamps.
  • two fluorescent lamps are arranged one above the other in a reflector in the case of the literature reference US Pat. No. 3,591,798 with the aim of achieving an increased light intensity of the light emerging from the light downwards.
  • a mechanical lampholder adjustment could also be provided for such a luminaire, if necessary, in order to be able to change the beam characteristic of the luminaire within certain limits if required.
  • Changing the beam characteristics of a mirror luminaire by mechanically adjusting the lamp holders is a good solution, provided that the setting once made does not have to be changed again and again to reflect changing lighting conditions. Every change in the setting means an intervention in the luminaire, which takes a certain amount of time and requires additional aids, such as ladders and tools.
  • the invention has for its object to provide a further variable in their beam characteristics mirror lamp, which can be quickly and optimally adapted to different illumination conditions in their beam characteristics, and without the need for mechanical mutual adjustment of fluorescent lamps and reflector.
  • the invention is based on the essential finding that by means of two fluorescent lamps arranged one above the other, between which an auxiliary reflector is provided, a lamp with a wide-beam and a narrow-beam characteristic can be realized.
  • the fluorescent lamps only need to be able to be switched on and off separately.
  • control means for the brightness control are also provided in both lamp circuits, beam characteristics can be realized in which, depending on the control of the two fluorescent lamps, a broad-beam or a narrow-beam characteristic predominates.
  • an optimal balance between deep and wide radiation can also be set in an extremely advantageous manner for each workplace and for each activity with the lamp according to the invention.
  • the mirror luminaire 1 shown in perspective in essential parts in FIG. 1 and in cross section in FIG. 2 has a channel-shaped main reflector 2 with the width BR.
  • the main reflector 2 has at the top a roof-like indentation with a roof edge 2.1, which lies in the plane of symmetry SE shown in FIG. 2.
  • the fluorescent lamps 6.1 and 6.2 arranged one above the other within the main reflector 2 lie in the plane of symmetry SE.
  • An auxiliary reflector 3 is arranged between the two fluorescent lamps 6.1 and 6.2, specifically in the middle.
  • the substantially flat auxiliary reflector 3 is aligned parallel to the light exit opening LA of the main reflector 2.
  • the auxiliary reflector 3 has a roof-shaped formation 3.1, which extends in the axial direction of the fluorescent lamps 6.1 and 6.2, the roof edges 3.2 of which also lie in the plane of symmetry SE.
  • the auxiliary reflector 3, including its shape 3.1, is designed as a mirror image of the plane of symmetry SE.
  • the lamp sockets 7.1 and 7.2 with the fluorescent lamps 6.1 and 6.2 are each arranged in a separate circuit.
  • the two circuits are connected to a switching device 9 via a common connecting cable 8.
  • the switching device 9 has a switching and setting button 9.1 and 9.2 for each of the two lamp circuits for the separate switching on and off and setting of the lamp circuits.
  • transverse lamellae 4 and 5 are provided, which are arranged one after the other along the fluorescent lamps 6.1 and 6.2.
  • the transverse lamellae 4 are U-shaped elements which, with their legs, encompass the lower fluorescent lamp 6.2 and adjoin the underside of the auxiliary reflector 3 with the free leg ends.
  • the transverse lamellae 5 on both sides of the upper fluorescent lamp 6.1 are inherently straight elements which extend from the top of the auxiliary reflector 3 to the main reflector 2.
  • the sections KL and K'-L 'of the main reflector 2 are expediently on both sides of its roof-shaped retraction, and the sections CM and C'-M' of the auxiliary reflector 3 are detachably held and can be removed downward from the main reflector 2 when the lamp needs to be changed Raster reflector unit designed.
  • the partial sections KL and K'-L 'of the main reflector 2 and the partial sections CM and C'-M' of the auxiliary reflector 3 are predetermined in their width by the width BL of the transverse slats 4 and 5.
  • the mutual distance between the axes ax of the fluorescent lamps 6.1 and 6.2 is indicated in Fig. 2 with HA.
  • the lower fluorescent lamp 6.2 is located with its axis ax above the light exit plane LA at the height HL.
  • the height HL is chosen taking into account the diameter D of the fluorescent lamps 6.1 and 6.2 so that the beam g going through the edge point A and touching the lower edge of the lamp bulb of the lower fluorescent lamp 6.2 with the horizontal line the shielding angle includes ⁇ .
  • the width of the auxiliary reflector 3 and thus also the outer contour of the transverse lamellae 4 and 5 is given by the intersection C and C 'of two beams a and b or a' and b '.
  • the beam a or a ' represents a tangent from the edge point A or A' of the light exit opening LA of the main reflector 2 to the upper edge of the lamp envelope of the upper fluorescent lamp 6.1.
  • the other beam b or b ' also represents a tangent to the represents the upper edge of the lamp bulb of the upper fluorescent lamp 6.1 on the side of the beam a or a 'assigned to it, which is reflected on the roof edge 2.1 at point B of the roof-shaped retraction of the main reflector 2 to the light exit side LA.
  • This geometric condition ensures both the invisibility of the fluorescent lamp 6.1 from below and a sensible dimensioning of the width of the auxiliary reflector 3.
  • the upper fluorescent lamp 6.1 illuminates the entire main reflector 2 between the edge points A and A 'and point B of the roof edge of the roof-shaped indentation. Due to the auxiliary reflector 3, the lower fluorescent lamp 6.2 cannot illuminate the entire main reflector 2. It illuminates it in the lower area in the section between the lower edge point A and the point E or the lower edge point A 'and the point E'.
  • two beams d and e are indicated, of which the beam d originates from the upper fluorescent lamp 6.1 and the beam e from the lower fluorescent lamp 6.2 and is reflected on the right-hand side at the main reflector 2 towards the light exit opening LA will.
  • the contour of the main reflector is expedient, taking into account the given mutual arrangement of main reflector 2 and fluorescent lamps 6.1 and 6.2 chosen so that the relationship applies (I) ⁇ 1 ⁇ ⁇ 2 ⁇ 90 O - ⁇
  • the roof-shaped configuration 3.1 of the auxiliary reflector 3 prevents the lamp light that is radiated directly from the fluorescent lamps 6.1 and 6.2 onto the auxiliary reflector 3 from being reflected back into the fluorescent lamps.
  • the auxiliary reflector 3 is shaped in its roof contour in the area of the top of the formation 3.1 between the point F and the roof edge 3.2 such that the tangent Tg at point G of its contour is perpendicular on the tangent Tl from point G to the lamp bulb of the fluorescent lamp 6.1.
  • a light beam f incident from another point H of the lamp bulb of the fluorescent lamp 6.1 is always reflected away from the fluorescent lamp 6.1 in this dimensioning, which results in maximum efficiency.
  • the roof surface contour of the roof-shaped configuration 3.1 of the auxiliary reflector 3 can be approximated by a circular arc with the radius RS, the center of which has the coordinates XS and YS in an XY coordinate system.
  • the Y axis lies in the axis of symmetry SE and the X axis perpendicular to this lies in the surface of the auxiliary reflector 3 on the side of the associated roof surface contour.
  • FIG. 5 shows a suitable contour of the main reflector 2 which satisfies relation (I).
  • An XY coordinate system is entered in FIG. 5, in which the Y axis lies in the axis of symmetry SE and the X axis lies in the light exit plane LA.
  • the contour begins at edge point A with a straight section LG of length 1 at an angle ⁇ to the horizontal. This is followed by circular arcs Sections LR1, LR2 and LR3, whose radii RH1, RH2 and RH3 become smaller and smaller in the sequence.
  • the radius RH1 has the center coordinate XH1 / YH1, the radius RH2 the center coordinate XH2 / YH2 and the radius RH3 the center coordinate XH3 / YH3.
  • the side view of the luminaire according to FIG. 1 shown in detail in FIG. 6 corresponding to the C90-270 o plane shows that the mutual distance DA of the transverse lamellae 5 on both sides of the upper fluorescent lamp 6.1 is chosen to be smaller than the mutual distance DB, the transverse lamellae 4 comprising the lower fluorescent lamp 6.2.
  • the transverse lamellae 4 and 5 are V-shaped and have concavely curved walls, the curvature of which is approximated to the optimal curve shape by a circular arc with the radius RL.
  • the V-shaped cross-sectional contour results in a thickness DL for the transverse lamellae 4 and 5 on the part of the fluorescent lamps 6.1 and 6.2.
  • a beam path SG1 results according to a narrow-beam characteristic of the lamp light emerging downwards from the light exit opening LA with a maximum emission angle ⁇ corresponding to this characteristic. If this maximum radiation angle ⁇ is also not to be exceeded in the longitudinal direction of the luminaire, that is to say in the C90 o -180 o plane, then the mutual maximum distance DA of the transverse lamellae 5 on both sides of the fluorescent lamp 6.1 is hereby specified.
  • the mutual distance DA of the transverse slats 5 can then be selected equal to the mutual distance DB of the transverse slats 4, as shown in FIG. 7 corresponding to FIG. 6. This then means a slight over-shielding of the mirror light 1 in the longitudinal direction when the lower fluorescent lamp 6.2 is switched on.
  • the narrow-beam beam path SG1 shown in cross section of the lamp in FIG. 8 when the upper fluorescent lamp 6.1 is switched on and the wide beam beam path SG2 shown in FIG. 9 in cross section of the lamp with the lower fluorescent lamp 6.2 switched on thus gives the possibility of alternately switching the two on and off Switching fluorescent lamps 6.1 and 6.2 from one beam characteristic to the other, specifically in a mirror lamp which has the generally known advantages of mirror louvres.
  • the mirror lamp 1 is therefore particularly suitable for illuminating workplaces where VDU work is performed mixed with other activities. In a CAD workstation, for example, distracting reflections should neither appear on the screen nor on the graphics tablet. Reduction of reflections on the screen requires narrow-beam mirror lights (BAP lights). Reducing reflections on horizontal surfaces requires wide-angle mirror lights (CRF lights).
  • ballasts With adjustable and remote-controlled ballasts, stepless transitions between the situations mentioned can be established.
  • the optimum balance between deep and wide radiation can be set for every workplace and every activity. It is technically possible to have the switch between deep and wide radiation triggered automatically by the corresponding work processes, in that the lights, which can be reflected in a screen, are automatically switched to deep radiation when a computer is switched on. Conversely, both fluorescent lamps could automatically be set to full power when the drawing machine was touched.
  • Conflict situations could arise in an open-plan office if a mirror light optimally set for a first workstation shows disturbing glare or reflections at the neighboring second workstation. This can be avoided if the lighting system is controlled via a central computer.
  • lighting scenarios can be created for each workplace, which take into account the various activities and viewing directions. These scenarios are then weighed up against each other by the control program so that no conflict situations arise.
  • automatically triggered switching processes eg by switching on the workstation computer
  • individual switching requests from Employees at their workplaces, as well as general, e.g. daylight-dependent controls of the lighting level are taken into account.
  • the auxiliary reflector 3 and the transverse slats 4 and 5 are made in this embodiment from plastic with a metallic high-gloss surface.
  • the main reflector 2 consists of anodized pure or ultra-pure aluminum with 20 o -reflectometer values according to DIN 67530 from 20% to 50% (semi-gloss).

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Mirrors, Picture Frames, Photograph Stands, And Related Fastening Devices (AREA)
EP91101297A 1991-01-31 1991-01-31 Appareil d'éclairage Expired - Lifetime EP0496920B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE91101297T DE59100856D1 (de) 1991-01-31 1991-01-31 Spiegelleuchte.
AT91101297T ATE100187T1 (de) 1991-01-31 1991-01-31 Spiegelleuchte.
EP91101297A EP0496920B1 (fr) 1991-01-31 1991-01-31 Appareil d'éclairage

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP91101297A EP0496920B1 (fr) 1991-01-31 1991-01-31 Appareil d'éclairage

Publications (2)

Publication Number Publication Date
EP0496920A1 true EP0496920A1 (fr) 1992-08-05
EP0496920B1 EP0496920B1 (fr) 1994-01-12

Family

ID=8206351

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91101297A Expired - Lifetime EP0496920B1 (fr) 1991-01-31 1991-01-31 Appareil d'éclairage

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EP (1) EP0496920B1 (fr)
AT (1) ATE100187T1 (fr)
DE (1) DE59100856D1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0854317A3 (fr) * 1997-01-20 1999-07-28 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Réflecteur et lampe comprenant un tel réflecteur

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR949146A (fr) * 1947-06-30 1949-08-22 Saunier Anciens Ets Sources lumineuses de grandes dimensions
DE975713C (de) * 1952-10-22 1962-07-05 Siemens Ag Strassenleuchte fuer Leuchtstofflampen mit rinnenfoermigem Gehaeuse und darin eingesetztem Spiegelreflektor
WO1985003760A1 (fr) * 1984-02-22 1985-08-29 Solar Armaturproduktion A/S Luminaire avec lampe en forme de tige et segment a lamelles
DE3416128A1 (de) * 1984-04-27 1985-11-07 1000 Berlin Wolfgang Kunkel GmbH Breitstrahlende einbauleuchte fuer kaufhausflaechen
US4907143A (en) * 1988-11-18 1990-03-06 Columbia Lighting, Inc. Reflector system for fluorescent troffer

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR949146A (fr) * 1947-06-30 1949-08-22 Saunier Anciens Ets Sources lumineuses de grandes dimensions
DE975713C (de) * 1952-10-22 1962-07-05 Siemens Ag Strassenleuchte fuer Leuchtstofflampen mit rinnenfoermigem Gehaeuse und darin eingesetztem Spiegelreflektor
WO1985003760A1 (fr) * 1984-02-22 1985-08-29 Solar Armaturproduktion A/S Luminaire avec lampe en forme de tige et segment a lamelles
DE3416128A1 (de) * 1984-04-27 1985-11-07 1000 Berlin Wolfgang Kunkel GmbH Breitstrahlende einbauleuchte fuer kaufhausflaechen
US4907143A (en) * 1988-11-18 1990-03-06 Columbia Lighting, Inc. Reflector system for fluorescent troffer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0854317A3 (fr) * 1997-01-20 1999-07-28 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Réflecteur et lampe comprenant un tel réflecteur

Also Published As

Publication number Publication date
EP0496920B1 (fr) 1994-01-12
DE59100856D1 (de) 1994-02-24
ATE100187T1 (de) 1994-01-15

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