EP0189394B1 - Reflector device - Google Patents

Reflector device Download PDF

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Publication number
EP0189394B1
EP0189394B1 EP83903177A EP83903177A EP0189394B1 EP 0189394 B1 EP0189394 B1 EP 0189394B1 EP 83903177 A EP83903177 A EP 83903177A EP 83903177 A EP83903177 A EP 83903177A EP 0189394 B1 EP0189394 B1 EP 0189394B1
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EP
European Patent Office
Prior art keywords
reflector device
reflector
light source
side face
radiation
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EP83903177A
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German (de)
French (fr)
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EP0189394A1 (en
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Heinrich Wendel
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Individual
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    • 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
    • F21V17/00—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
    • F21V17/02—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages with provision for adjustment
    • 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
    • F21V9/00—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters
    • F21V9/40—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters with provision for controlling spectral properties, e.g. colour, or intensity

Definitions

  • the invention relates to a reflector arrangement for an artificial light source having a spectrum corresponding to natural daylight, preferably a fluorescent tube with at least partially arranged and adjustable reflector elements around the light source.
  • a corresponding reflector arrangement can be found in DE-U-1 803 911.
  • the reflector arrangement is arranged in a street lamp in order to be able to adapt the light intensity distribution of each individual lamp to the respective street conditions by adjusting the individual reflector elements designed as mirrors.
  • the individual mirrors arranged on a ring around the lamp are adjusted once after the lamp has been set up, so that, as mentioned, it can be adjusted to the desired road conditions.
  • GB-A-9 740 shows a reflector arrangement for artificial light which consists of individual reflectors arranged in a ring around a light source which can be pivoted in such a way that the lamp illuminates either a ceiling or a floor of a room.
  • US-A-4 074 124 shows a lighting arrangement with which the lighting conditions of day and night can be simulated.
  • the object of the present invention is to design a reflector arrangement of the type mentioned at the outset in such a way that the biological effects of artificial light sources are improved in such a way that in particular the color temperature of the light coming from the light source corresponds to the course of the day in natural daylight, that is to say the natural circadian rhythm is imitable.
  • each reflector element is a prism-shaped body rotatable about its longitudinal axis and extends along the longitudinal axis of the light source, with at least two of the body side surfaces having a different geometry with different optical properties.
  • the optical property or effectiveness means that the color temperature of the reflected light in particular can be changed in order to correspond to the course of the day of natural light.
  • the adjustment of the reflector elements to one another and the optional alignment of the differently reflecting body side surface in addition to the change in the color temperature, ensure that the illuminance is reproduced in accordance with daylight.
  • the individual reflector elements can be controlled synchronously, if necessary by a preprogrammed regulating mechanism, so that the natural course of daylight is simulated. This prevents the monotonous illuminance and color temperature of the known artificial light sources.
  • the reflector elements can be aligned to the light source in a controlled manner in such a way that even the passage of clouds or the like is simulated, for example by reproducing shorter periods of time with less illuminance.
  • the prism-shaped body is a triangular prism, the three side surfaces of which are provided with different geometries, the optical effectiveness of which is also chosen differently.
  • one of the side surfaces is convex and preferably shows a structured surface.
  • This convex side surface which is red or at least has a red tint, ensures that the red component of the light coming from the artificial light source is increasingly reflected, whereas the UV component of the spectrum is reflected less.
  • This convex red side surface of the triangular prism is intended to ensure that the color temperature is in the range of approximately 35,000 Kelvin.
  • the convex shape also shows that the degree of reflection is lower compared to flat or concave surfaces.
  • the second side surface is flat according to the teaching according to the invention, shows a yellow color in order to reflect the UV radiation particularly well and to increase the color temperature to a total of approximately 4500 ° K.
  • the level design enables the illuminance of the light coming from the artificial light source to be increased by approximately 12%.
  • the third side surface is concave, i.e. it shows the highest degree of reflection and has a silver color - this is created by a special aluminum alloy, in particular a magnesium-aluminum alloy - in order to maximize the brightness on the one hand and the color temperature to approximately 5400 ° on the other K to increase. This also ensures the highest UV reflection from the reflector surfaces.
  • the illuminance can be varied by up to ⁇ 25% through the surface of the reflector element facing the light source, this is also achieved by that the free clear distance between adjacent edges of adjacent reflector elements is changed during the turning process, so that this automatically increases or decreases the reflectance.
  • the direct radiation originating from the artificial light source can additionally be changed with regard to the illuminance and color temperature by arranging foils and / or adjustable reflectors, for example in the form of blinds.
  • the reflector arrangement is preferably intended for a fluorescent tube which can be operated with smoothed direct current, the polarity of the lamp electrodes being reversed during operation.
  • this reduces the power consumption by an estimated 37% in comparison to the known fluorescent tubes that are operated exclusively with alternating current (on the one hand by increasing the lumens / wattage by 20%, on the other hand the power consumption is reduced by 17% compared to known circuits), and on the other hand, the biological effect of corresponding lamps is increased by approx. 300% by excluding the negative effects such as optical flickering, electromagnetic interference fields, etc.
  • a fluorescent tube such as that which is on the market under the name True Lite and which almost completely emits the natural spectrum of sunlight including the UVA and UVB components should be used.
  • an artificial light source in the form of a fluorescent tube 12 is shown, which is surrounded by a reflector arrangement 10.
  • the reflector arrangement 10 is located in a luminaire housing 13, which can be attached to a ceiling or suspended from it, for example.
  • the reflector arrangement 10 consists at least partially in the form of a ring around the fluorescent lamp 12, for example on an imaginary cylinder jacket or another curved surface, so as to modify and reflect the radiation from the fluorescent lamp 12 to the desired extent with regard to the color temperature and brightness to be able to.
  • the reflector elements 14 are - as illustrated in particular in FIG. 3 - formed by prismatic bodies which have bearing pins 16 and 18 at their ends, by means of which they can be mounted in the housing 13.
  • friction wheels or the like of the bearing journals 16 and / or 18. be arranged, which interact with the adjacent reflector elements, so as to enable, for example, a controlled and synchronous rotation of the reflector elements 14 via a gear motor 20 provided on an end face of the housing 13.
  • a gear can be arranged between the individual friction wheels, if necessary, in order to be able to rotate the reflector elements 14 at the same time but in the opposite sense.
  • the control of the individual reflector elements 14 can be preprogrammed so as to ensure alignment with the fluorescent lamp 12 to the desired extent, which ultimately determines the illuminance and the color temperature of the emitted radiation.
  • each reflector element 14 which is preferably a triangular prism with differently shaped side surfaces 22, 24 and 26.
  • the different design of the side surfaces 22, 24, 26 is to ensure, in addition to a different optical effectiveness to be described with respect to the incident radiation, that the radiation originating from the artificial light source in the form of the fluorescent lamp 12 is varied in terms of illuminance and / or color temperature, that the daily routine of natural light is simulated.
  • the surface 22 is concave with respect to the fluorescent lamp 12, is preferably silver-colored by means of a special aluminum alloy such as, for example, a magnesium-aluminum alloy, and has optical properties which ensure that the illuminance increases and a color temperature of that of the fluorescent lamp 12 radiation is set to approximately 5400 ° K.
  • a special aluminum alloy such as, for example, a magnesium-aluminum alloy
  • the side surface 24, on the other hand, is planar, although it likewise reflects the UV radiation well, but to a lesser extent than the concave surface 22, and sets the color temperature of the emitted light to approximately 450.degree.
  • the flat surface is also yellow and semi-glossy. These properties are preferably also achieved by means of a special aluminum alloy.
  • the third surface 26 is convex and increasingly reflects the red component of the light coming from the fluorescent lamp 12, with a reduced UV reflection taking place at the same time compared to the surface 24.
  • the right perceived by the surface 26 due to the convex shape, the reflected light component is the least compared to the reflection components of the other surfaces 22 and 24.
  • the convex surface is red and structured, which also reduces the degree of reflection.
  • the alignment of the individual reflector elements 14 on the fluorescent lamp 12 thus ensures that the emitted light corresponds to the natural light of a course of the day, so that the natural biological-physiological rhythm is ensured.
  • the distance between the edges of each reflector element 14 lying on a circle is approximately 18 mm, the distance between the fluorescent lamp surface and the closest reflector element being approximately 40 to 50 mm.
  • a hexagonal prism can also be used as the reflector element, the diametrically arranged side surfaces being chosen identically in their geometry and optical properties.
  • the direct radiation originating from the fluorescent lamp can be additionally influenced with regard to illuminance and / or color temperature by provided foils or reflectors 28, in order, if necessary, to be able to fine-tune the emitted radiation to that of natural daylight and its course.
  • the reflector arrangement 10 according to the invention is preferably intended for a fluorescent lamp 12 which is supplied with a smoothed direct current.
  • the fluorescent lamp can be supplied by a rectifier circuit connected to the network, as described in European patent application 0062269 by the same applicant.
  • the voltage originating from this rectifier circuit is largely smoothed, so that i.a. the electromagnetic interference fields or optical flickering which occur in the known fluorescent tubes are avoided, as a result of which physiologically negative effects on the people working with light coming from such fluorescent tubes are prevented.
  • the rectifier circuit is followed by a periodically operating polarity reversal relay in order to ensure periodic polarity reversal during operation, thereby avoiding cataphoresis.

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  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

There is proposed a light reflector (10) which enables to modify the radiation emitted by an artificial source (12) so as to obtain a colour temperature and a light intensity corresponding to that of natural light. To this effect, the reflector is comprised of a plurality of elongate prismatic bodies (14) rotating about their longitudinal axis. The faces of each prism present a different geometry with different optical characteristics.

Description

Die Erfindung bezieht sich auf eine Reflektoranordnung für eine ein dem natürlichen Tageslicht entsprechendes Spektrum aufweisende künstliche Lichtquelle vorzugsweise eine Leuchtstoffröhre mit zumindest teilweise um die Lichtquelle angeordneten und einstellbaren Reflektorelementen.The invention relates to a reflector arrangement for an artificial light source having a spectrum corresponding to natural daylight, preferably a fluorescent tube with at least partially arranged and adjustable reflector elements around the light source.

Eine entsprechende Reflektoranordnung ist dem DE-U-1 803 911 zu entnehmen. Dabei ist die Reflektoranordnung in einer Straßenleuchte angeordnet, um durch Einstellen der einzelnen als Spiegel ausgebildeten Reflektorelementen eine Anpassung der Lichtstärkeverteilung jeder einzelnen Leuchte an die jeweiligen Straßenverhältnise vornehmen zu können. Dabei werden die auf einem Kranz um die Lampe angeordneten Einzelspiegel nach dem Aufstellen der Lampe einmal eingestellt, um so - wie erwähnt - auf die gewünschten Straßenverhältnisse eingestellt zu werden.A corresponding reflector arrangement can be found in DE-U-1 803 911. The reflector arrangement is arranged in a street lamp in order to be able to adapt the light intensity distribution of each individual lamp to the respective street conditions by adjusting the individual reflector elements designed as mirrors. The individual mirrors arranged on a ring around the lamp are adjusted once after the lamp has been set up, so that, as mentioned, it can be adjusted to the desired road conditions.

Der GB-A-9 740 ist eine Reflektoranordnung für künstliches Licht zu entnehmen, die aus kranzförmig um eine Lichtquelle angeordneten Einzelreflektoren besteht, die derart verschwenkbar sind, daß die Lampe entweder eine Decke oder einen Boden eines Raumes beleuchtet.GB-A-9 740 shows a reflector arrangement for artificial light which consists of individual reflectors arranged in a ring around a light source which can be pivoted in such a way that the lamp illuminates either a ceiling or a floor of a room.

Der US-A-4 074 124 ist eine Beleuchtungsanordnung zu entnehmen, mit der die Lichtverhältnisse von Tag und Nacht simuliert werden können.US-A-4 074 124 shows a lighting arrangement with which the lighting conditions of day and night can be simulated.

Dabei ist unter Lichtverhältnissen nur der Helligkeitsgrad zu verstehen. Die Simulation erfolgt dadurch, daß eine stabförmige Lampe von einem einen Schlitz aufweisenden drehbaren Reflektor umgeben ist, der in Abhängigkeit von der gewünschten nachzuempfindenden Tageszeit die von der Lampe abgegebene Strahlung nicht, teilweise oder vollständig abdeckt.In this case, only the degree of brightness is to be understood under lighting conditions. The simulation takes place in that a rod-shaped lamp is surrounded by a rotatable reflector which has a slot and which, depending on the desired time of day to be sensed, does not, partially or completely, cover the radiation emitted by the lamp.

Aufgabe der vorliegenden Erfindung ist es, eine Reflektoranordnung der eingangs genannten Art so auszubilden, daß die biologischen Wirkungen von künstlichen Lichtquellen dahingehend verbessert werden, daß insbesondere die Farbtemperatur des von der Lichtquelle stammenden Lichts dem Tagesverlauf des natürlichen Tageslichts entspricht, also dem natürlichen Circadian-Rhythmus nachahmbar ist.The object of the present invention is to design a reflector arrangement of the type mentioned at the outset in such a way that the biological effects of artificial light sources are improved in such a way that in particular the color temperature of the light coming from the light source corresponds to the course of the day in natural daylight, that is to say the natural circadian rhythm is imitable.

Die Aufgabe wird erfindungsgemäß dadurch gelöst, daß jedes Reflektorelement ein prismenförmig ausgebildeter um seine Längsachse drehbarer Körper ist und sich entlang der Längsachse der Lichtquelle erstreckt, wobei zumindest zwei der Körperseitenflächen eine voneinander abweichende Geometrie mit Unterschiedlichen optischen Eigenschaften aufweisen. Dabei ist unter optischer Eigenschaft bzw. Wirksamkeit zu verstehen, daß insbesondere die Farbtemperatur des reflektierten Lichts veränderbar ist, um so dem Tagesverlauf des natürlichen Lichts zu entsprechen. Gleichzeitig wird durch das Verstellen der Reflektorelemente Zueinander und das wahlweise Ausrichten der unterschiedlich reflektierenden Körperseitenfläche neben der Veränderung der Farbtemperatur sichergestellt, daß die Beleuchtungs stärke dem Tageslicht entsprechend nachvollzogen wird. Zu diesem Zweck können die einzelnen Reflektorelemente synchron gesteuert werden, gegebenenfalls durch einen vorprogrammierten Regetmechanismus, so daß der natürliche Ablauf des Tageslichts simuliert wird. Dadurch wird die monotone Beleuchtungsstärke und Farbtemperatur der bekannten künstlichen Lichtquellen unterbunden.The object is achieved in that each reflector element is a prism-shaped body rotatable about its longitudinal axis and extends along the longitudinal axis of the light source, with at least two of the body side surfaces having a different geometry with different optical properties. The optical property or effectiveness means that the color temperature of the reflected light in particular can be changed in order to correspond to the course of the day of natural light. At the same time, the adjustment of the reflector elements to one another and the optional alignment of the differently reflecting body side surface, in addition to the change in the color temperature, ensure that the illuminance is reproduced in accordance with daylight. For this purpose, the individual reflector elements can be controlled synchronously, if necessary by a preprogrammed regulating mechanism, so that the natural course of daylight is simulated. This prevents the monotonous illuminance and color temperature of the known artificial light sources.

Infolgedessen wird dem menschlichen Organismus auch dann, wenn er unter entsprechenden künstlichen Lichtquellenverhältnissen arbeiten muß, ein natürlicher Stoffwechsel und Hormonhaushalt gewährleistet. Dabei können die Reflektorelemente derart auf die Lichtquelle kontrolliert ausgerichtet werden, daß sogar der Durchzug von Wolken oder ähnliches vorgetäuscht wird, indem zum Beispiel kürzere Zeiträume von geringerer Beleuchtungsstärke nachvollzogen werden.As a result, the human organism is guaranteed a natural metabolism and hormone balance even if it has to work under appropriate artificial light source conditions. The reflector elements can be aligned to the light source in a controlled manner in such a way that even the passage of clouds or the like is simulated, for example by reproducing shorter periods of time with less illuminance.

Nach einer besonders hervorzuhebenden Ausgestaltung ist der prismenförmige Körper ein Dreieckprisma, dessen drei Seitenflächen mit voneinander abweichender Geometrie versehen sind, wobei deren optische Wirksamkeit ebenfalls unterschiedlich gewählt ist. So ist nach hervorzuhebenden Merkmalen der Erfindung eine der Seitenflächen konvex ausgebildet und zeigt vorzugsweise eine strukturierte Oberfläche. Diese konvexe Seitenfläche, die rot ist oder zumindest eine Rottönung aufweist, stellt sicher, daß verstärkt der Rotanteil des von der künstlichen Lichtquelle stammenden Lichts reflektiert wird, wohingegen der UV-Anteil des Spektrums verringert reflektiert wird. Mittels dieser konvex ausgebildeten roten Seitenfläche des Dreieckprismas soll sichergestellt werden, daß die Farbtemperatur im Bereich von ca. 35000 Kelvin liegt. Durch die konvexe Form wird auch erkennbar, daß der Reflexionsgrad im Vergleich zu plan oder konkav geformten Flächen geringer ist.According to a particularly noteworthy embodiment, the prism-shaped body is a triangular prism, the three side surfaces of which are provided with different geometries, the optical effectiveness of which is also chosen differently. Thus, according to the features of the invention that are to be emphasized, one of the side surfaces is convex and preferably shows a structured surface. This convex side surface, which is red or at least has a red tint, ensures that the red component of the light coming from the artificial light source is increasingly reflected, whereas the UV component of the spectrum is reflected less. This convex red side surface of the triangular prism is intended to ensure that the color temperature is in the range of approximately 35,000 Kelvin. The convex shape also shows that the degree of reflection is lower compared to flat or concave surfaces.

Die zweite Seitenfläche ist nach der erfindungsgemäßen Lehre plan ausgebildet, zeigt eine gelbe Farbe, um so die UV-Strahlung besonders gut zu reflektieren und die Farbtemperatur auf insgesamt ca. 4500° K zu erhöhen. Durch die ebene Ausbildung kann die Beleuchtungsstärke des von der künstlichen Lichtquelle stammenden Lichts um ca. 12 % angehoben werden.The second side surface is flat according to the teaching according to the invention, shows a yellow color in order to reflect the UV radiation particularly well and to increase the color temperature to a total of approximately 4500 ° K. The level design enables the illuminance of the light coming from the artificial light source to be increased by approximately 12%.

Schließlich ist die dritte Seitenfläche konkav ausgebildet, zeigt also den höchsten Reflexionsgrad und wirkt silberfarben - dies wird durch eine Spezialaluminiumlegierung insbesondere eine Magnesium-Aluminium-Legierung erzeugt -, um so zum einen die Helligkeit zu maximieren und zum anderen die Farbtemperatur auf in etwa 5400° K zu steigern. Dadurch ist auch gleichzeitig die höchste UV-Reflexion von den Reflektorflächen gewährleistet.Finally, the third side surface is concave, i.e. it shows the highest degree of reflection and has a silver color - this is created by a special aluminum alloy, in particular a magnesium-aluminum alloy - in order to maximize the brightness on the one hand and the color temperature to approximately 5400 ° on the other K to increase. This also ensures the highest UV reflection from the reflector surfaces.

Kann die Beleuchtungsstärke zum einen durch die der Lichtquelle zugewandte Fläche des Reflektorelementes bis zu ± 25 % variiert werden, so geschieht dies außerdem dadurch, daß der freie lichte Abstand zwischen aneinandergrenzenden Kanten von nebeneinander angeordneten Reflektorelementen während des Drehvorgangs verändert wird, so daß dadurch automatisch der Reflexionsgrad erhöht bzw. verringert wird.If, on the one hand, the illuminance can be varied by up to ± 25% through the surface of the reflector element facing the light source, this is also achieved by that the free clear distance between adjacent edges of adjacent reflector elements is changed during the turning process, so that this automatically increases or decreases the reflectance.

In weiterer Ausgestaltung der Erfindung kann die direkte von der künstlichen Lichtquelle stammende Strahlung zusätzlich bezüglich der Beleuchtungsstärke und Farbtemperatur verändert werden, indem Folien und/oder verstellbare Reflektoren zum Beispiel in Form von Jalousien angeordnet werden.In a further embodiment of the invention, the direct radiation originating from the artificial light source can additionally be changed with regard to the illuminance and color temperature by arranging foils and / or adjustable reflectors, for example in the form of blinds.

Vorzugsweise ist die Reflektoranordnung für eine Leuchtstoffröhre bestimmt, die mit geglättetem Gleichstrom betreibbar ist, wobei während des Betriebes eine Umpolung der Lampenelektroden erfolgt. Dadurch wird zum einen der Stromverbrauch um schätzungsweise 37 % im Vergleich zu den bekannten ausschließlich mit Wechselstrom betriebenen Leuchtstoffröhren (zum einen durch die Erhöhung der Lumen/Wattleistung um 20 %, zum anderen wird der Stromverbrauch gegenüber bekannten Schaltungen um 17 % verringert) reduziert, und zum anderen die biologische Wirkung entsprechender Lampen um ca. 300 % erhöht, indem die negativen Auswirkungen wie zum Beispiel optisches Flimmern, elektromagnetische Störfelder usw. ausgeschlossen werden. Dabei dürfte insbesondere eine Leuchtstoffröhre Verwendung finden, wie sie unter der Bezeichnung True Lite auf dem Markt ist und nahezu vollständig das natürliche Sonnenlichtspektrum einschließlich der UVA- und UVB-Anteile emitiert.The reflector arrangement is preferably intended for a fluorescent tube which can be operated with smoothed direct current, the polarity of the lamp electrodes being reversed during operation. On the one hand, this reduces the power consumption by an estimated 37% in comparison to the known fluorescent tubes that are operated exclusively with alternating current (on the one hand by increasing the lumens / wattage by 20%, on the other hand the power consumption is reduced by 17% compared to known circuits), and on the other hand, the biological effect of corresponding lamps is increased by approx. 300% by excluding the negative effects such as optical flickering, electromagnetic interference fields, etc. In particular, a fluorescent tube such as that which is on the market under the name True Lite and which almost completely emits the natural spectrum of sunlight including the UVA and UVB components should be used.

Weitere Einzelheiten, Vorteile und Merkmale der Erfindung ergeben sich sowohl aus den Ansprüchen als auch aus den in der Zeichnung dargestellten bevorzugten Ausführungsbeispielen.Further details, advantages and features of the invention emerge both from the claims and from the preferred exemplary embodiments illustrated in the drawing.

Es zeigen:

  • Fig. 1 Eine mit einer erfindungsgemäßen Reflektoranordnung versehene Leuchtstoffröhre,
  • Fig. 2 in vergrößerter Darstellung die Reflektoranordnung nach Fig. 1,
  • Fig. 3 eine Detaildarstellung eines Reflektorelements gemäß Fig. 2 und ,
  • Fig.4 eine alternative Ausbildung einer Reflektoranordnung gemäß Fig. 1.
Show it:
  • 1 shows a fluorescent tube provided with a reflector arrangement according to the invention,
  • 2 is an enlarged view of the reflector assembly of FIG. 1,
  • 3 shows a detailed illustration of a reflector element according to FIG. 2 and FIG.
  • 4 shows an alternative embodiment of a reflector arrangement according to FIG. 1.

Gemäß Fig. 1 ist eine von einer Reflektoranordnung 10 umgebene künstliche Lichtquelle in Form einer Leuchtstoffröhre 12 dargestellt. Dabei befindet sich die Reflektoranordnung 10 in einem Leuchtengehäuse 13, das zum Beispiel an einer Zimmerdecke angebracht oder von dieser abgehängt werden kann. Die Reflektoranordnung 10 besteht gemäß Fig. 2 zumindest aus teilkranzförmig um die Leuchtstofflampe 12 zum Beispiel auf einem gedachten Zylindermantel oder einer anderen gekrümmten Fläche angeordneten Reflektorelemente 14, um so die von der Leuchtstofflampe 12 kommende Strahlung im gewünschten Umfang hinsichtlich der Farbtemperatur und Helligkeit modifizieren und reflektieren zu können. Die Reflektorelemente 14 werden - wie insbesondere die Fig. 3 verdeutlicht - durch prismenförmige Körper gebildet, die an ihren Enden Lagerzapfen 16 bzw. 18 aufweisen, mittels derer diese in dem Gehäuse 13 gelagert werden können. Ferner können von den Lagerzapfen 16 und/oder 18 zum Beispiel Reibräder o.ä. angeordnet sein, die mit an den angrenzenden Reflektorelementen in Wechselwirkung treten, um so zum Beispiel über einen an einer Stirnseite des Gehäuses 13 vorhandenen Getriebemotor 20 ein kontrolliertes und synchrones Drehen der Reflektorelemente 14 zu ermöglichen.1, an artificial light source in the form of a fluorescent tube 12 is shown, which is surrounded by a reflector arrangement 10. The reflector arrangement 10 is located in a luminaire housing 13, which can be attached to a ceiling or suspended from it, for example. According to FIG. 2, the reflector arrangement 10 consists at least partially in the form of a ring around the fluorescent lamp 12, for example on an imaginary cylinder jacket or another curved surface, so as to modify and reflect the radiation from the fluorescent lamp 12 to the desired extent with regard to the color temperature and brightness to be able to. The reflector elements 14 are - as illustrated in particular in FIG. 3 - formed by prismatic bodies which have bearing pins 16 and 18 at their ends, by means of which they can be mounted in the housing 13. Furthermore, for example, friction wheels or the like of the bearing journals 16 and / or 18. be arranged, which interact with the adjacent reflector elements, so as to enable, for example, a controlled and synchronous rotation of the reflector elements 14 via a gear motor 20 provided on an end face of the housing 13.

Dabei kann zwischen den einzelnen Reibrädern gegebenenfalls ein Getriebe angeordnet sein, um die Reflektorelemente 14 zwar gleichzeitig aber im entgegengesetzten Sinne verdrehen zu können. Die Steuerung der einzelnen Reflektorelemente 14 kann dabei vorprogrammiert sein, um so im gewünschten Umfang ein Ausrichten auf die Leuchtstofflampe 12 zu gewährleisten, wodurch letztendlich die Beleuchtungsstärke und die Farbtemperatur der abgestrahlten Strahlung bestimmt wird.A gear can be arranged between the individual friction wheels, if necessary, in order to be able to rotate the reflector elements 14 at the same time but in the opposite sense. The control of the individual reflector elements 14 can be preprogrammed so as to ensure alignment with the fluorescent lamp 12 to the desired extent, which ultimately determines the illuminance and the color temperature of the emitted radiation.

Wesentliches Merkmal der Erfindung ist die Ausbildung eines jeden Reflektorelementes 14, das bevorzugt ein Dreieckprisma mit geoemtrisch unterschiedlich ausgebildeten Seitenflächen 22, 24 und 26 ist. Die unterschiedliche Ausbildung der Seitenflächen 22, 24, 26 soll neben einer noch zu beschreibenden Unterschiedlichen optischen Wirksamkeit in Bezug auf die einfallende Strahlung sicherstellen, daß die von der künstlichen Lichtquelle in Form der Leuchtstofflampe 12 stammende Strahlung bezüglich Beleuchtungsstärke und/oder Farbtemperatur derart variiert wird, daß der Tagesablauf des natürlichen Lichts simuliert wird.An essential feature of the invention is the design of each reflector element 14, which is preferably a triangular prism with differently shaped side surfaces 22, 24 and 26. The different design of the side surfaces 22, 24, 26 is to ensure, in addition to a different optical effectiveness to be described with respect to the incident radiation, that the radiation originating from the artificial light source in the form of the fluorescent lamp 12 is varied in terms of illuminance and / or color temperature, that the daily routine of natural light is simulated.

So ist die Fläche 22 in Bezug auf die Leuchtstofflampe 12 konkav ausgebildet, ist vorzugsweise mittels einer Spezialaluminiumlegierung wie zum Beispiel eine Magnesium-Aluminium-Legierung silberfarben und weist optische Eigenschaften auf, die sicherstellen, daß die Beleuchtungsstärke erhöht und eine Farbtemperatur der von der Leuchtstofflampe 12 stammenden Strahlung auf in etwa 5400° K eingestellt wird.Thus, the surface 22 is concave with respect to the fluorescent lamp 12, is preferably silver-colored by means of a special aluminum alloy such as, for example, a magnesium-aluminum alloy, and has optical properties which ensure that the illuminance increases and a color temperature of that of the fluorescent lamp 12 radiation is set to approximately 5400 ° K.

Die Seitenfläche 24 ist dagegen plan ausgebildet, reflektiert zwar ebenfalls die UV-Strahlung gut, jedoch in einem geringeren Anteil als die konkav ausgebildete Fläche 22, und stellt die Farbtemperatur des abgegebenen Lichts auf in etwa 450° K ein. Ferner ist die plane Fläche gelb und halbglänzend. Vorzugsweise werden diese Eigenschaften ebenfalls durch eine Spezialaluminiumlegierung erreicht.The side surface 24, on the other hand, is planar, although it likewise reflects the UV radiation well, but to a lesser extent than the concave surface 22, and sets the color temperature of the emitted light to approximately 450.degree. The flat surface is also yellow and semi-glossy. These properties are preferably also achieved by means of a special aluminum alloy.

Schließlich ist die dritte Fläche 26 konvex ausgebildet und reflektiert verstärkt den Rotanteil des von der Leuchtstofflampe 12 stammenden Lichts, wobei gleichzeitig im Vergleich zur Fläche 24 eine verringerte UV-Reflexion erfolgt. Der von der Fläche 26 wahrgenommene reflektierte Lichtanteil ist aufgrund der konvexen Form im Vergleich zu den Reflexionsanteilen der anderen Flächen 22 und 24 am geringsten. Ferner ist die konvexe Fläche rot und strukturiert, wodurch gleichfalls der Reflexionsgrad verringert wird.Finally, the third surface 26 is convex and increasingly reflects the red component of the light coming from the fluorescent lamp 12, with a reduced UV reflection taking place at the same time compared to the surface 24. The right perceived by the surface 26 due to the convex shape, the reflected light component is the least compared to the reflection components of the other surfaces 22 and 24. Furthermore, the convex surface is red and structured, which also reduces the degree of reflection.

Durch das Ausrichten der einzelnen Reflektorelemente 14 auf die Leuchtstofflampe 12 wird somit sichergestellt, daß das abgestrahlte Licht dem natürlichen Licht eines Tagesverlaufs entspricht, so daß der natürliche biologisch-physiologische Rhythmus gewährleistet ist. Zu der Dimensionierung ist zu erwähnen, daß der Abstand der auf einem Kreis liegenden Kanten eines jeden Reflektorelements 14 in etwa 18 mm ist, wobei der Abstand zwischen der Leuchtstofflampenoberfläche und dem nächstliegenden Reflektorelement in etwa 40 bis 50 mm beträgt. Auch sei erwähnt, daß anstelle eines Dreieckprismas auch ein Sechseckprisma als Reflektorelement treten kann, wobei diametral angeordnete Seitenflächen in ihrer Geometrie und optischen Eigenschaften gleich gewählt sind.The alignment of the individual reflector elements 14 on the fluorescent lamp 12 thus ensures that the emitted light corresponds to the natural light of a course of the day, so that the natural biological-physiological rhythm is ensured. Regarding the dimensioning, it should be mentioned that the distance between the edges of each reflector element 14 lying on a circle is approximately 18 mm, the distance between the fluorescent lamp surface and the closest reflector element being approximately 40 to 50 mm. It should also be mentioned that instead of a triangular prism, a hexagonal prism can also be used as the reflector element, the diametrically arranged side surfaces being chosen identically in their geometry and optical properties.

In weiterer Ausgestaltung der Erfindung kann die von der Leuchtstofflampe stammende direkte Strahlung hinsichtlich Beleuchtungsstärke und /oder Farbtemperatur durch vorgesehene Folien oder Reflektoren 28 zusätzlich beeinflußt werden, um gegebenenfalls noch feiner die emitierte Strahlung auf die des natürlichen Tageslichts und dessen Verlauf abstimmen zu können.In a further embodiment of the invention, the direct radiation originating from the fluorescent lamp can be additionally influenced with regard to illuminance and / or color temperature by provided foils or reflectors 28, in order, if necessary, to be able to fine-tune the emitted radiation to that of natural daylight and its course.

Vorzugsweise ist die erfindungsgemäße Reflektoranordnung 10 für eine Leuchtstofflampe 12 bestimmt, die mit einem geglätteten Gleichstrom versorgt wird. Zu diesem Zweck kann die Leuchtstofflampe von einer an das Netz angeschlossenen Gleichrichterschaltung versorgt werden, wie in der Europäischen Patentanmeldung 0062269 desselben Anmelders beschrieben ist. Die von dieser Gleichrichterschaltung stammende Spannung ist dabei weitgehend geglättet, so daß u.a. die bei den bekannten Leuchtstoffröhren auftretenden elektromagnetischen Störfelder oder das optische Flimmern vermieden wird, wodurch physiologisch negative Auswirkungen auf die bei einem von solchen Leuchtstoffröhren stammenden Licht arbeitenden Personen unterbunden werden. Dabei ist wie bereits in der Europäischen Patentanmeldung beschrieben der Gleichrichterschaltung ein periodisch arbeitendes Umpolrelais nachgeschaltet, um ein periodisches Umpolen während des Betriebs zu gewährleisten, wodurch eine Kataphorese vermieden wird.The reflector arrangement 10 according to the invention is preferably intended for a fluorescent lamp 12 which is supplied with a smoothed direct current. For this purpose, the fluorescent lamp can be supplied by a rectifier circuit connected to the network, as described in European patent application 0062269 by the same applicant. The voltage originating from this rectifier circuit is largely smoothed, so that i.a. the electromagnetic interference fields or optical flickering which occur in the known fluorescent tubes are avoided, as a result of which physiologically negative effects on the people working with light coming from such fluorescent tubes are prevented. As already described in the European patent application, the rectifier circuit is followed by a periodically operating polarity reversal relay in order to ensure periodic polarity reversal during operation, thereby avoiding cataphoresis.

Claims (12)

1. Reflector device for an artificial light source, preferably a Fluorescent light tube, having a spectrum corresponding to the natural daylight, with adjustable reflector bodies at least partially arranged around the light source, characterized thereby that each reflector body (14) is of prismatic configuration and can rotate about its longitudinal axis, and is extending along the longitudinal axis of the light source (12), where at least two of the side faces of the body (22, 24, 26) present a geometry differing from each other with different optical efficiency.
2. Reflector device according to Claim 1, characterized thereby that the body (14) is a triangular prism, of which the side faces each time have a geometry differing from each other with different optical properties.
3. Reflector device according to Claim 2, characterized thereby that the side faces (22, 24, 26) are of concave, flat and convex configuration.
4. Reflector device according to Claim 3, characterized thereby that the convex-designed side face (26) preferably has a structured surface and is red, as well is intensifying the red portion and decreasing the ultraviolet portion that is reflected by the radiation coming from the fluorescent light tube.
5. Reflector device according to Claim 3, characterized thereby that the flat-designed side face (24) is preferably yellow and semi-shining, and is increasingly reflecting the ultraviolet portion of the radiation coming from the light source (12).
6. Reflector device according to Claim 3, characterized thereby that the concave side face (22) as compared to the other faces (24, 26) is most strongly reflecting the ultraviolet portion of the radiation ciming from the light source (12).
7. Reflector device according to Claim 6, characterized thereby that the concave-designed side face (22) is covered with an aluminum- magnesium alloy.
8. Reflector device according to Claim 3, characterized thereby that the colour temperature of the light source (12) radiation reflected by the convex side face (26) is approximately 3500° Kelvin preferably, that of the flat side face (24) preferably approx. 4500° Kelvin, and that of the concave side face (22) preferably approx. 5400° Kelvin.
9. Reflector device according at least to Claim 1, characterized thereby that by the adjustment of the reflector bodies (14) of the reflector device (10) with respect to the light source (12), the colour temperature of same can be continuously varied between approx. 3500° and 5400° Kelvin and its illumination intensity preferably for ± 25 %.
10. Reflector device at least according to Claim 1 and Claim 8, characterized thereby that the reflector bodies (14) of the reflector device (10) can be adjusted with respect to each other and to the light source (12) in such a manner that the light intensity and colour temperature of the radiation percepted by the light source will equal the natural daylight and its progress.
11. Reflector device at least according to Claim 1, characterized thereby that the reflector device in addition is comprising foils and/or adjustable reflectors in order to influence the direct radiation coming from the light source (12)
12. Reflector device at least according to Claim 1 for a fluorescent light tube with a spectrum corresponding to the natural daylight, where the fluorescent tube can be operated with smoothed direct current and during the operation a continuous pole-changing of the electrodes of the fluorescent tube is taking place.
EP83903177A 1983-10-03 1983-10-03 Reflector device Expired EP0189394B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83903177T ATE44602T1 (en) 1983-10-03 1983-10-03 REFLECTOR ARRANGEMENT.

Applications Claiming Priority (1)

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PCT/EP1983/000256 WO1985001566A1 (en) 1983-10-03 1983-10-03 Reflector device

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EP0189394A1 EP0189394A1 (en) 1986-08-06
EP0189394B1 true EP0189394B1 (en) 1989-07-12

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DE (1) DE3380183D1 (en)
WO (1) WO1985001566A1 (en)

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WO1996028956A1 (en) * 1995-03-10 1996-09-19 Philips Electronics N.V. Lighting system for controlling the colour temperature of artificial light under the influence of the daylight level
US6076943A (en) * 1995-10-04 2000-06-20 Lassovsky; Leon A. Luminaire
US6607289B2 (en) 1995-10-04 2003-08-19 Leon Lassovsky Quick connect reflector holder
US6206548B1 (en) 1996-08-27 2001-03-27 Leon A. Lassovsky Luminaire module having multiple rotatably adjustable reflectors
FR2802704B1 (en) * 1999-12-15 2004-02-13 Rudolf Wendel ELECTRIC MIRROR BULB AND LIGHTING RAMP COMPRISING AT LEAST ONE SUCH BULB
US7481552B2 (en) * 2004-06-18 2009-01-27 Abl Ip Holding Llc Light fixture having a reflector assembly and a lens assembly for same
US10980190B2 (en) * 2017-07-18 2021-04-20 Sat Parkash Gupta Environment-controlled greenhouse with compressor and blower modules

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US4651259A (en) 1987-03-17
DE3380183D1 (en) 1989-08-17
EP0189394A1 (en) 1986-08-06
WO1985001566A1 (en) 1985-04-11

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