EP1843086B1 - Lampe à réflecteur - Google Patents

Lampe à réflecteur Download PDF

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Publication number
EP1843086B1
EP1843086B1 EP07103779A EP07103779A EP1843086B1 EP 1843086 B1 EP1843086 B1 EP 1843086B1 EP 07103779 A EP07103779 A EP 07103779A EP 07103779 A EP07103779 A EP 07103779A EP 1843086 B1 EP1843086 B1 EP 1843086B1
Authority
EP
European Patent Office
Prior art keywords
reflector
light
lens
semiconductor element
luminaire according
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.)
Active
Application number
EP07103779A
Other languages
German (de)
English (en)
Other versions
EP1843086A1 (fr
Inventor
Katherina Keller
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zumtobel Lighting GmbH Austria
Original Assignee
Zumtobel Lighting GmbH Austria
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Zumtobel Lighting GmbH Austria filed Critical Zumtobel Lighting GmbH Austria
Publication of EP1843086A1 publication Critical patent/EP1843086A1/fr
Application granted granted Critical
Publication of EP1843086B1 publication Critical patent/EP1843086B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F21V7/04—Optical design
    • 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
    • F21S8/03—Lighting devices intended for fixed installation of surface-mounted type
    • F21S8/033—Lighting devices intended for fixed installation of surface-mounted type the surface being a wall or like vertical structure, e.g. building facade
    • 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
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S9/00—Lighting devices with a built-in power supply; Systems employing lighting devices with a built-in power supply
    • F21S9/02—Lighting devices with a built-in power supply; Systems employing lighting devices with a built-in power supply the power supply being a battery or accumulator
    • 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
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]

Definitions

  • the present invention relates to a luminaire having a light source in the form of a semiconductor light-emitting element and a reflector.
  • Reflector lights in the form of floor, ceiling or recessed wall lights are known from the prior art.
  • a reflector lamp known which is particularly suitable as a step reflector lamp.
  • the luminaire has a light source in the form of a light-emitting diode (LED) whose light is directed by a reflector onto a surface to be illuminated, for example a step.
  • LED light-emitting diode
  • a radiation in the lateral direction is not provided here, so that the transverse extent of the illuminated area is essentially limited to the corresponding dimension of the reflector lamp.
  • From the DE 102 43 590 A1 is a motor vehicle lamp with a light source in the form of a light emitting diode, a reflector and a lens known, wherein the lens between the light emitting diode and the reflector is arranged.
  • the reflector is shaped so that the lamp emits a cone of light whose lateral extent is greater than its vertical extent.
  • the luminaire has a concave reflector.
  • the present invention has for its object to provide a reflector light, which is particularly well suited for lighting a wide range, in particular for an area that extends in the lateral direction well beyond the dimensions of the light addition.
  • a luminaire which has a light source in the form of a light-emitting semiconductor element, for example an LED. Furthermore, the luminaire has a reflector, as well as a lens arrangement which is arranged between the semiconductor element and the reflector.
  • the reflector is designed such that a radiated from the semiconductor element and the reflector reflected light forms a cone of light whose extent is greater in a first direction than in a second direction different from the first direction.
  • the lens arrangement is arranged vertically above the semiconductor element and the reflector vertically above the lens arrangement-for the sole purpose of easier describability.
  • the semiconductor element, the lens array and the reflector may be arranged along a vertical extending vertically upward from a point of the light-emitting surface of the semiconductor element.
  • the semiconductor element can be oriented in such a way that the surface normal of the light-emitting surface is directed vertically upwards. It is expressly understood that this orientation is purely exemplary in nature and serves solely to make the following description easier to understand.
  • the luminaire can be aligned and operated in any desired orientation with respect to the vertical. The following designations change accordingly in such a case.
  • the luminaire according to the invention that a particularly wide area can be illuminated, in particular an area whose lateral extent is significantly greater than the lateral extent of the luminaire.
  • the lamp is suitable for example for illuminating an elongated path section or the like.
  • it can also be used for example for the illumination of a corresponding wall or ceiling section or the like.
  • the lamp is particularly suitable for emergency lighting due to its reliable and long-lasting light source.
  • the lens arrangement makes it possible to direct the greatest possible proportion of the light emitted by the semiconductor element to the reflector, that is to use the light as effectively as possible, with relatively large spatial freedom of design with regard to the relative arrangement between the LED and the reflector. With the lens arrangement, therefore, the light emitted by the LED light can be concentrated as effectively as possible on the reflector surface.
  • minimum intensity means an intensity which is at least necessary for illumination.
  • the absolute size of this minimum intensity can vary depending on the specific conditions, in particular the lighting conditions in the environment of the lamp.
  • the "first” direction may, for example, be a horizontal direction, for example the “transverse direction” from one side to the opposite side, for example from “right” to "left".
  • the second direction may also be a horizontal direction, in particular a direction which extends at right angles to the first direction, that is to say for example a "longitudinal direction”.
  • the lens arrangement may, for example, be a lens, for example a converging lens.
  • the light-emitting semiconductor element is an unhoused LED.
  • a rear region of the reflector is arranged closer to the lens arrangement than a front region of the reflector.
  • the reflector may be arranged obliquely with respect to an optical axis or main axis of the lens arrangement.
  • the light cone does not extend substantially from the reflector in the direction of the lens arrangement (ie, down), but in a direction different from, for example, obliquely downwards.
  • This increases the freedom of design with regard to the relative arrangement of semiconductor and lens arrangement and reflector and thus also with regard to the outer shape of the luminaire.
  • This also makes it possible to arrange the lens arrangement so that it influences the course of the light cone as little as possible undesirable.
  • the reflector or the reflector inner surface is viewed in a frontal view, ie in a section in a view from the front, down concave shaped. This may in particular be the case for a corresponding cutting plane which runs through the lens arrangement.
  • the reflector is designed such that the light is reflected by the reflector across two opposite sides and the extent of the light cone in the lateral direction is greater than the extent of the light cone in the longitudinal direction.
  • more light is reflected by the reflector to one side, as to the opposite other side.
  • more light may mean higher intensity light and / or light that illuminates a larger spatial area.
  • a correspondingly asymmetrical lighting allows greater freedom in the choice of the location for the lamp in relation to the area to be illuminated.
  • the reflector has a first area with a first surface normal and a second area with a second surface normal, the two surface normals, as seen in the first direction, that is, for example, seen in the lateral direction, having opposite components.
  • the two components can be the same size, for example, in their amount and differ only in their direction.
  • the two surface normals can be identical in their other components.
  • the forward-facing components can be the same size.
  • the reflector has an edge which extends at least substantially along a cutting line which results in a section of a lens cone of light formed by the light which leaves the lens arrangement upwards with an upper wall arranged above the lens arrangement ,
  • the upper wall may be shaped convexly in particular downwards.
  • lens cone of light is meant that spatial, conical-section-shaped area, which is flooded by the light which, emitted by the semiconductor element, has passed through the lens arrangement and in turn has a certain minimum intensity.
  • the lamp further comprises a mounting housing, in which the semiconductor element, the reflector and the lens arrangement are arranged, wherein a light exit plane can be defined by an opening in the housing.
  • the edge of the opening can therefore be shaped along a plane.
  • the light cone passes through the light exit surface at an angle, for example obliquely downwards. This is to express that the light cone is asymmetrical with respect to the surface normal of the light exit plane.
  • the reflector on faceted mirror surfaces.
  • the luminaire further comprises at least one further light source in the form of at least one further light-emitting semiconductor element, at least one further reflector, and at least one further lens arrangement, which is arranged between the further semiconductor element and the further reflector.
  • the at least two semiconductor elements are advantageously arranged laterally next to each other.
  • the two reflectors can be arranged laterally side by side.
  • the two lens arrangements can also be arranged laterally next to each other.
  • the further light source, the further reflector and the further lens arrangement are identical to the first light source, the first reflector and the first lens arrangement.
  • said relative arrangement may extend to each other in the first direction.
  • a first embodiment of a lamp 1 according to the invention is shown schematically in perspective. It can be seen as the light source, a semiconductor element in the form of an LED 2, here an unhoused LED 2, a reflector 3 and a lens arrangement as a lens, hereinafter referred to briefly as lens 4, between the LED 2 and the reflector 3, here just above the LED 2 is arranged.
  • the lamp is designed in the form of a recessed light.
  • the luminaire has a built-in box or a built-in housing 5 with an opening 10, through whose edge a light exit plane 7 can be fixed.
  • the lens 4 is vertically above the LED 2 and the reflector 3 is vertically above the lens 4.
  • the direction “up” is in Fig. 1 indicated in a small drawn symbolic Cartesian coordinate system with the z-axis.
  • "Front” in this embodiment corresponds to the direction of the surface normal of the light exit plane 7, with the coordinate system selected here thus the x-direction.
  • the y-direction denotes a lateral direction, namely "left", so that the negative y-direction corresponds to "right”.
  • the chosen direction designations are only for easier understanding. It is expressly pointed out that the lamp can be arranged aligned in any orientation with respect to the vertical.
  • the light-emitting surface of the LED 2 is aligned horizontally.
  • the lens 4 is arranged such that its major axis or optical axis is vertically oriented.
  • the lamp 1 for example, to illuminate a flat surface, for example, a path portion or any other elongated portion extending in the y direction, serve.
  • the lamp for example, to illuminate a vertical wall section or a ceiling section, for example a room.
  • Fig. 2 is a frontal view of the light 1 shown in Fig. 3 a schematic cross section, as well as in Fig. 4 a top view.
  • Fig. 4 a top view.
  • the respective axes of the selected coordinate system are outlined in the last three figures.
  • the reflector 3 is designed such that its rear portion 31 is lower and thus located closer to the lens 4, as its front portion 32.
  • the reflector 3 is thus arranged obliquely aligned with respect to the vertical.
  • the cone of light which is formed by the light emitted by the LED 2 and reflected by the reflector 3, leaves the lamp 1 obliquely at the front bottom through the light exit plane 7.
  • the main extension of the reflector 3, that is, for example, a connecting line between the rear region 31 and the front region 32 with respect to the horizontal forms an angle between about 10 ° and about 80 °, for example about 25 °. In general, depending on the site this tendency can be chosen so that thereby a dazzling effect of the lamp can be avoided, so a glare-free light is created.
  • the reflector 3 is designed so that it is viewed in a frontal section, concave down.
  • the reflector 3 is shaped such that the light, so to speak, cross to the right and to is reflected to the left.
  • This is in Fig. 2 very schematically indicated by two sketched exemplary light rays 12. These two exemplary sketched light beams 12 are also in Fig. 3 outlined.
  • the two light beams 12 are reflected at the reflector 3 in the exemplary selected points P and Q on the reflector inner surface.
  • the reflector 3 thus has a surface normal which has a component directed to the left, that is to say in the positive y direction.
  • the reflector 3 has a surface normal, which has a component directed to the right, that is to say in the negative y direction.
  • the reflector 3 is formed symmetrically with respect to a vertical x-z plane passing through the center of the LED 2. In this way, a light cone is effected, which is symmetrical with respect to said plane.
  • the exemplarily chosen points P and Q may also be symmetrical to said x-z plane.
  • the surface normal of the reflector inner surfaces in the points P and Q therefore have identical components in the x-direction and z-direction. Their components in y-direction differ in sign, but not in amount.
  • the lens 4 is chosen such that the light emitted by the LED 2 leaves the lens 4 upwards, is directed as effectively as possible to the reflector surface.
  • lens cone of light This light cone is simply called “lens cone of light” here.
  • the boundaries of the lens cone of light are in the Figures 2 and 3 again very schematically drawn as dotted lines.
  • the reflector 3 is how best Fig. 1 can be seen, mounted on an upper wall 13 or "embedded” in this.
  • the upper wall 13 is fastened in the interior of the installation housing 5. Viewed in the lateral cross-section, the wall 13 is convex downwards. This further contributes to the most effective use of light.
  • the outer boundary or the edge of the reflector 3 is designed so that it extends at least substantially along a cutting line, which is given by a section of the lens cone of light with the upper wall 13. In this way, the light can be used very effectively. So this contributes to the overall improvement in the efficiency of the lamp.
  • the reflector inner surface is designed according to this embodiment as a faceted mirror surface.
  • a translucent, flat cover is provided, whereby the lamp according to this embodiment is particularly suitable for outdoor use.
  • a second LED 2 ' is next to the LED 2, next to the lens 4, a second lens 4' and next to the reflector 3, a second reflector 4 'arranged.
  • two of the said "units" LED 2, lens 4, reflector 3 are arranged laterally next to each other and thus arranged side by side in the direction in which the broader emission takes place. It is also possible to provide three or any number of such units next to each other.
  • the number of selected units LED / lens / reflector is set no specific upper limit.
  • the two units shown by way of example are chosen identical in construction in the embodiment.
  • the LED 2 is mounted on a carrier board 6. (In the figures, the attachment of the support plate 6 in the mounting housing 5 for the sake of clarity is not drawn.)
  • the second LED 2 ' is mounted on a second carrier board 6'.
  • the two mentioned - or generally corresponding to many - carrier boards 6, 6 ' can also be provided in one piece or partially in one piece.
  • a special design of the illumination can also be achieved, for example by LEDs which emit light in different colors.
  • the two or more units may also be provided to design the two or more units in such a way that they each have a laterally asymmetrical emission characteristic, as indicated above for one unit.
  • one light cone may be provided for each unit, which irradiates a longer area toward the outer side than the inner side with respect to the installation housing.
  • the installation housing 5 is parallelepiped in the embodiments shown here, which makes it particularly easy to integrate the luminaire structurally in an environment.
  • the lamp is due to the relatively reliable and durable light source especially as emergency lighting.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Claims (11)

  1. Lampe, comprenant
    - une source lumineuse sous la forme d'un élément semi-conducteur émetteur de lumière (2),
    - un réflecteur (3), et
    - un dispositif à lentille (4) disposé entre l'élément semi-conducteur (2) et le réflecteur (3),
    le réflecteur (3) étant réalisé de telle manière qu'une lumière émise par l'élément semi-conducteur (2) et réfléchie par le réflecteur (3) forme un cône lumineux dont l'extension dans une première direction soit supérieure à l'extension dans une deuxième direction, différente de la première,
    caractérisé
    en ce que le réflecteur (3), vu par en bas, est de forme concave dans une partie frontale, et
    en ce que la lumière est réfléchie en croix par le réflecteur (3) vers deux côtés opposés, et l'extension du cône lumineux en direction latérale est supérieure à l'extension du cône lumineux en direction longitudinale.
  2. Lampe selon la revendication 1,
    où l'élément semi-conducteur est une LED (2) sans boîtier.
  3. Lampe selon la revendication 1 ou la revendication 2,
    où une zone arrière (31) du réflecteur (3) est disposée plus près du dispositif à lentille (4) qu'une zone antérieure (32) du réflecteur (3).
  4. Lampe selon l'une des revendications précédentes,
    où plus de lumière est réfléchie par le réflecteur (3) vers le premier côté, que vers l'autre côté opposé.
  5. Lampe selon l'une des revendications précédentes,
    où le réflecteur (3) comprend une première zone avec une première normale à la surface et une deuxième zone avec une deuxième normale à la surface, les deux normales à la surface présentant des composantes opposées dans la première direction.
  6. Lampe selon l'une des revendications précédentes,
    où le réflecteur (3) comprend un bord qui s'étend au moins sensiblement le long d'une ligne d'intersection, laquelle est obtenue par intersection d'un cône lumineux de lentille formé par la lumière quittant le dispositif à lentille (4) vers le haut, avec une paroi supérieure disposée au-dessus du dispositif à lentille (4).
  7. Lampe selon l'une des revendications précédentes,
    où la lampe comprend en outre un boîtier encastrable (5), où sont disposés l'élément semi-conducteur (2), le réflecteur (3) et le dispositif à lentille (4), un plan de sortie de lumière (7) pouvant être défini par une ouverture (10) dans le boîtier encastrable (5).
  8. Lampe selon la revendication 7,
    où le cône lumineux traverse obliquement le plan de sortie de lumière (7).
  9. Lampe selon l'une des revendications précédentes,
    où le réflecteur (3) comprend des surfaces réflexives à facettes.
  10. Lampe selon l'une des revendications précédentes,
    comprenant en outre
    - au moins une autre source lumineuse sous la forme d'un autre élément semi-conducteur émetteur de lumière (2'),
    - au moins un autre réflecteur (3'), et
    - au moins un autre dispositif à lentille (4') disposé entre l'autre élément semi-conducteur (2') et l'autre réflecteur (3').
  11. Lampe selon la revendication 10,
    où les deux éléments semi-conducteurs au moins (2, 2'), au moins les deux réflecteurs (3, 3'), et au moins les deux dispositifs à lentille (4, 4') sont disposés côte à côte.
EP07103779A 2006-04-05 2007-03-08 Lampe à réflecteur Active EP1843086B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102006016021A DE102006016021A1 (de) 2006-04-05 2006-04-05 Reflektorleuchte

Publications (2)

Publication Number Publication Date
EP1843086A1 EP1843086A1 (fr) 2007-10-10
EP1843086B1 true EP1843086B1 (fr) 2010-02-17

Family

ID=37307443

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07103779A Active EP1843086B1 (fr) 2006-04-05 2007-03-08 Lampe à réflecteur

Country Status (3)

Country Link
EP (1) EP1843086B1 (fr)
AT (1) ATE458167T1 (fr)
DE (2) DE102006016021A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008016496A1 (de) * 2008-03-31 2009-10-01 Zumtobel Lighting Gmbh Leuchte mit punktförmiger Lichtquelle und asymmetrischer Lichtabstrahlcharakteristik
DE102010019436A1 (de) * 2010-05-05 2011-11-10 Christian Bartenbach Wand- und/oder Deckenleuchte
DE102011082844A1 (de) * 2011-09-16 2013-03-21 Zumtobel Lighting Gmbh Beleuchtungsanordnung insbesondere zur Rettungswegbeleuchtung
EP2894395B1 (fr) * 2014-01-10 2021-04-07 ZG Lighting France S.A. Dispositif d'éclairage pour tunnels, voies souterraines ou passages souterrains
EP2894394B1 (fr) * 2014-01-10 2021-06-09 ZG Lighting France S.A.S Dispositif d'éclairage pour l'éclairage des bâtiments, façades ou parois

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002042523A (ja) * 2000-07-28 2002-02-08 Matsushita Electric Works Ltd 光照射装置
JP3953764B2 (ja) * 2001-09-20 2007-08-08 株式会社小糸製作所 車両用灯具
DE10345567A1 (de) 2003-09-29 2005-05-19 Erco Leuchten Gmbh Reflektorleuchte, wie Boden-, Decken- oder Wandeinbau-Reflektorleuchte, insbesondere Stufen-Reflektorleuchte

Also Published As

Publication number Publication date
ATE458167T1 (de) 2010-03-15
DE502007002837D1 (de) 2010-04-01
DE102006016021A1 (de) 2007-10-11
EP1843086A1 (fr) 2007-10-10

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