EP2348250B1 - Lampe à DEL linéaire, notamment lampe annulaire à DEL - Google Patents

Lampe à DEL linéaire, notamment lampe annulaire à DEL Download PDF

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Publication number
EP2348250B1
EP2348250B1 EP11000431.4A EP11000431A EP2348250B1 EP 2348250 B1 EP2348250 B1 EP 2348250B1 EP 11000431 A EP11000431 A EP 11000431A EP 2348250 B1 EP2348250 B1 EP 2348250B1
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EP
European Patent Office
Prior art keywords
light
led
optical device
reflector
component
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
EP11000431.4A
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German (de)
English (en)
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EP2348250A1 (fr
Inventor
Martin Kronast
Peter Prodell
Stephan Lukanow
Manfred DÖRING
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.)
Osram SBT GmbH
Original Assignee
Siteco Beleuchtungstechnik GmbH
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Publication of EP2348250A1 publication Critical patent/EP2348250A1/fr
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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
    • 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
    • F21W2131/10—Outdoor lighting
    • 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
    • F21W2131/10—Outdoor lighting
    • F21W2131/103—Outdoor lighting of streets or roads
    • 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
    • F21Y2105/00—Planar light sources
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]
    • 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]
    • F21Y2115/15—Organic light-emitting diodes [OLED]

Definitions

  • the invention relates to a luminaire, the luminous means of which are formed by LEDs (light-emitting diodes), which also include OLEDs (organic light-emitting diodes).
  • LEDs light-emitting diodes
  • OLEDs organic light-emitting diodes
  • LEDs as lighting means are increasingly used in the field of outdoor lighting, especially in street lighting. These are the conventional bulbs in Energy consumption and the frequency of necessary maintenance often superior.
  • LED-based luminaires it is not possible to resort to conventional luminaire designs because the luminous means in the case of an LED luminaire are in the form of many small point-shaped light sources which require other optical deflecting means, in particular reflectors, to produce a desired light distribution.
  • Desired light distributions can be adjusted for example by the special design of the support surfaces on which the LEDs are arranged. However, if there are bends, these solutions are often very expensive. Other concepts include optical devices such as refractive elements or reflectors on LEDs. However, these can not be aligned in all directions to produce a desired light distribution, especially when the LEDs are arranged in a recess of the lamp component. Furthermore, the design of LED lights are often limited by the need to provide a heat sink immediately in the vicinity of the LEDs.
  • WO 2008/100894 A1 discloses LED lighting systems for displaying goods in housings, eg cooling devices.
  • An elongate illumination device with LEDs is provided along a door frame.
  • the LEDs are arranged along a channel and provided with a cover.
  • Each LED is assigned individual reflection surfaces for directing the light.
  • US Pat. No. 6,404,131 B1 discloses a light-emitting display device.
  • a matrix of LEDs is arranged in columns and rows in a housing having a reflective bottom surface and reflective side inner walls.
  • the LEDs are provided with a reflective coating to cause light deflection down to the bottom surface.
  • WO 2005/055328 A1 discloses a lighting device with a light-emitting device.
  • the light-emitting device comprises a plurality of LEDs which have light on a laterally arranged reflector for deflection to the light exit side.
  • Several of the light emitting devices may be arranged in a dimmer with a stationary reflector.
  • Object of the present invention is to provide an LED light, especially for outdoor use, such as a street lamp, which desired light distribution the level to be illuminated, such as a walkway, a bicycle lane or a road or a place to allow.
  • the present invention solves the problem by a lamp, in particular an outdoor lamp, according to claim 1.
  • the invention can provide that the said linear extension of the lamp component describes a curve, in particular a closed curve, or a polygonal pull of a plurality of straight sections, in particular a closed polygon.
  • the luminous component is annular or elliptical or forms a polygon, which approximates a ring or an ellipse.
  • a light beam emanating from the LED is deflected at least twice.
  • the first deflection is performed by the LEDs individually associated optical devices.
  • the second deflection takes place on the lateral reflection surface, which is in particular a continuous reflection surface for the entire luminaire component, in the direction of the light exit opening of the luminaire component.
  • the double deflection of the main emission direction of each LED makes it possible to form a given light field contour for the desired lighting task for a given shape of the luminaire component and with the LEDs arranged in the channel.
  • said twice-redirected light beam contains the majority of the light emanating from the LED; It is also the light beam of the LED can be deflected a total of at least twice.
  • the lighting component forms a channel which extends in a line along a curve, in particular a closed curve.
  • a polygonal draft which is to be understood as meaning a plurality of segments which are just lined up, in particular also a closed polygon, describe the linear extension of the luminaire component.
  • the closed curve or closed polygon allows light to be emitted in all directions, for example radially to a circle defining the lamp component, when all the LEDs with their individual optical devices are set equal with respect to the radius of the circle.
  • the individually assigned to the LEDs optical devices may also be set differently with respect to the linear extensions of the lamp component.
  • a light field distribution can be generated which generates the illumination of an elongated surface, for example for the illumination of a sidewalk. It is also possible to set a light distribution with a light band bend, as is preferred for illuminating streets by lights arranged laterally of the street.
  • the inventive design of the reflection or Lichtumlenkrajen within the lamp component therefore allows a high freedom of design with respect to the shape of the lamp component for different light distributions.
  • the shape of the luminaire component does not necessarily correspond to the light distribution to be generated.
  • the lighting component is annular or elliptical. These shapes allow a high degree of flexibility in the selection of the light field distribution to be generated.
  • the luminaire component is formed by a polygon, which approximates a ring or an ellipse. Since this form is made of straight sections, such a lighting component can be made easier. For example, an equilateral hexagon or an equilateral octagon, which already approximates a ring very well, are preferred. It can also be provided uneven side lengths, so that an ellipse can be approximated.
  • said luminaire component can be straight and / or have one or more straight grooves, wherein along these grooves in the manner described above LEDs and optical devices associated therewith are provided.
  • the invention can provide that the luminaire component has a plurality of grooves, which in particular can run parallel to one another. In a particular embodiment, such mutually parallel grooves border directly on each other. It can also be provided that in a groove of the lamp component several channel-shaped inserts, in particular Reflector inserts are provided, in each of which the LEDs individually assigned optical devices are provided, these channel-shaped inserts in particular define one or more parallel and / or directly adjacent grooves, in each of which one or more LEDs individually associated optical devices are arranged.
  • the LEDs are arranged at approximately equal intervals along the line-shaped extent of the lamp component on the LED carrier surface.
  • LEDs are arranged only along a line which corresponds to the line-shaped extension of the lamp component.
  • the optical devices associated with the LEDs effect a deflection of at least part of the light emanating from the LED, in certain embodiments also the total light emanating from the LED between 50 ° to 100 °, in particular approximately 90 °, in the direction of the lateral reflecting surface.
  • the deflected beam of the LED which defines the main emission direction of the LED, does not have to meet the shortest path to the lateral reflection surface.
  • a rotation angle of the optical deflection device may be selected differently with respect to a surface normal that intersects the LED and the main emission direction of the LED.
  • the angle of rotation of the optical deflection device can be chosen so that the deflected beam completely or partially passes directly to the light exit surface and / or completely or partially falls on a reflection surface, which deflects the light incident on them further, so that it directly or after further Reflections to the light exit surface passes.
  • the angle of rotation is selected so that the deflected light beam impinges on the said lateral reflection surface.
  • the zero point of this rotation angle can in principle be arbitrarily set, and preferably this definition applies to all optical devices which are individually assigned to an LED.
  • a rotation angle of 0 ° can be defined by the fact that, in the corresponding position, the main light component of the light emitted by the optical device Light is emitted in the radial direction toward the center of the lamp out or the main emission of this main light portion radially towards the center of the lamp has.
  • the axis with respect to which said rotation angle is defined is the same for all LEDs or all of an LED individually associated optical devices.
  • mountable or adjustable mountable or adjustable.
  • the optical devices in different angular positions on the LED support surface can be inserted.
  • a continuously variable rotation mechanism can also be provided.
  • the optical devices are still adjustable in the desired direction during assembly of the luminaire at the point of use.
  • the invention can provide that one or more optical devices, which are each associated with an LED, and the light component carrying the respective optical device are set up so that the optical device is guided through the respective one or only in discrete predetermined angles of rotation with respect to an axis LED, in particular a surface normal through the LED support surface, can be mounted.
  • the optical devices are thus in each case only in one or more discrete orientations with respect to the groove or the line which follows the groove, mountable.
  • the light component carrying the optical device may in particular be a reflector or reflector section which preferably accommodates a plurality of optical devices of the type described above and optically cooperates with the optical device or devices for emitting light from the luminaire.
  • the invention can provide that the optical device is secured by a positive connection against rotation about the said axis from the position corresponding to a predetermined angle of rotation.
  • the invention can provide that the optical device is inserted into a non-circular opening.
  • the invention may provide that the optical device has projections and / or depressions, which cooperates with complementary projections and / or depressions, in particular indentations and bulges of the edge of an opening in the optical device-carrying lamp component, to the optical device against a Twist to secure the said axis.
  • the invention may provide in one embodiment that the optical device is connected by a latching connection with the optical component carrying the lamp component, wherein the latching connection may be provided in particular to secure the optical device against tilting relative to the said axis.
  • the optical device has one or more latching lugs and one or more projections which engage over the edge of an opening in the luminaire component carrying the optical device in each case on opposite sides.
  • the optical device has one or more projections which engage over or under the edge of an opening in the optical component carrying the luminaire component on a relative to a latching nose or against the locking lugs position.
  • the optical device in an opening of the optical device supporting the lamp component is tilted, wherein by tilting relative to the said axis by the respective LED made the locking connection and in particular one or more locking lugs can be engaged.
  • the optical device can be inserted in a position tilted relative to the mounted state against the said axis, wherein in this tilted position, in which the latching connection is not yet established, the optical device against rotation about the axis is secured or a rotational movement about this axis is at least limited.
  • the invention can provide that the optical device associated with an LED is formed in one piece and / or is otherwise configured such that it can be mounted as a complete unit on the luminaire component carrying the optical device.
  • One or more of the LEDs individually associated optical devices may each include a deflection device that generates a light deflection due to a reflection and / or due to a refraction of light, or form such a deflection device.
  • a deflection device that generates a light deflection due to a reflection and / or due to a refraction of light, or form such a deflection device.
  • prism elements with at least three facet surfaces are provided as an optical device or component of such an optical device, wherein on one facet a total reflection is effected and the other surfaces serve as light entrance surface and light exit surface.
  • optical devices with mirrored surfaces are provided.
  • the optical device can contain or consist of an approximately shell-shaped curved reflection surface. This can divert a diverging beam coming from the LED in the direction of the lateral reflection surface and thereby reduce the divergence of the beam as it emanates from the LED even more.
  • the optical device or at least parts of the optical device are formed of plastic, wherein in a further development of this embodiment, at least one or more surfaces of the optical device with a reflective coating, in particular a reflective coating, preferably provided with a high reflectance ,
  • the invention may provide that the optical device has a concave curved reflection surface and a concave curved reflecting surface opposite this further reflection surface, wherein in a preferred embodiment, this further reflection surface at least partially reflects light on said concave curved reflection surface.
  • the invention can provide that, in the case of an optical device with a curved reflection surface in the optical device, a light path is provided past this curved reflection surface, which has one or more reflection surfaces, at which light of the light-emitting diode is reflected in the mounted state of the optical device.
  • the optical device has a concave curved reflector and a gap through which light can emerge on the rear side of the reflector, ie on the opposite side to the concave reflection surface, wherein preferably on the back of the reflector, the Split in the direction of the light path downstream of the light emitting diode from the optical device, one or more reflective surfaces are provided. Additionally or alternatively it can be provided that the optical device in the beam path to the said gap or away from said gap has one or more reflective surfaces.
  • the lateral reflection surface is arranged in the cross section perpendicular to the line-shaped extension of the lamp component at an angle between 60 ° and 90 °, preferably approximately 75 ° or 80 °, to the light exit surface. This tendency allows for a light deflection by the LED individually assigned device of about 90 ° and after further reflection at the lateral reflection surface a light emission of 40 ° to 80 °, preferably 50 ° to 70 °, in particular about 60 ° relative to the solder on the light-emitting surface.
  • the main radiation direction of the light beam emitted by an LED can be adjusted away from the luminaire in the direction of the object to be illuminated.
  • the lateral reflection surface is preferably arranged on the side of the luminaire pointing inwards. Then, depending on the setting of the individual light-guiding means, the main luminous flux can be set radially outwards or with a desired tangential deflection.
  • the said lateral reflecting surface may also be mounted on the outwardly facing side of the channel.
  • the main light output from the light exit surface in the direction of the lights inside.
  • the beams of the LEDs cross each other on opposite sides of the ring. The crossing point does not have to inevitably lie in the middle of the lamp, because the light output does not have to be radially inward, but may also have a tangential component, depending on the setting of the individual optical devices associated with the LEDs.
  • a second lateral reflection surface is arranged opposite the first-mentioned lateral reflection surface in the groove of the luminaire component.
  • the second lateral reflection surface in the cross section perpendicular to the longitudinal extension of the lamp component at an angle between 60 ° and 90 °, in particular about 85 °, to the light exit surface.
  • the second reflection surface may reflect scattered light or a secondary luminous flux emitted by the individual optical device or a luminous flux passing through the individual optical devices.
  • the secondary light component can serve to lighten the area of the luminaire, which is not detected by the main emission directions. For example, an annular lamp without incident light portion of the area within the ring will appear dark when the main light output of the lamp is made radially outward over the first lateral reflecting surface.
  • the optical device of the luminaire individually associated with the LEDs can be designed in such a way that the proportion of the light which is emitted as a secondary light component by the optical device is small in relation to the fraction of the light which has been described above Way is deflected by a deflection device, such as a prism or a reflector, or is discharged directly from the LED without reflection or deflection by refraction of light from the optical device and is not Bestanteil the secondary light component.
  • a deflection device such as a prism or a reflector
  • the optical device for example, between 5% and 20% of the luminous flux emitted by the LED may be emitted by the optical device as a secondary luminous flux.
  • an opening can be provided between the LED support surface and the optical device.
  • a slot may also be provided in the optical device or in a part of the optical device to allow direct passage of light without deflection at the optical device.
  • a prism body may also be used as optical device or part of the optical device be provided, which has a plurality of facets, wherein at least two facets point in different directions and each allow a light exit.
  • the minor light component is about 5% to 20% of the luminous flux emitted by the LED.
  • the first and second reflection surfaces may together or together with one or more further reflection surfaces form a reflector channel, in which said optical devices are arranged and to which these devices may possibly also be attached.
  • This reflector channel may extend over the entire channel of the above-mentioned lamp component or only over part of this channel. In the latter case, it may be advantageously provided that a plurality of reflector channels together form a continuous channel-shaped reflector which extends over the entire channel of the lamp component.
  • a reflector extending over the entire channel of the lamp component consists of six parts which adjoin one another directly and together define a continuous channel-shaped reflector.
  • the luminaire component is formed from a solid thermally conductive material, in particular from an aluminum body.
  • the luminaire component can serve as a heat sink for the LEDs.
  • the invention can provide that the lamp is held on a single support arm. This is favored by a massive design of the lamp component, on which the support arm attacks. According to alternative embodiments, however, two or more support arms may be provided, which are arranged in particular at equal intervals along the line-shaped extensions of the lamp component and on which the lamp component is held. Preference is given to two opposing support arms, which extend from the lamp component inwards, where they are connected to a lamppost.
  • a cavity is provided in the at least one support arm of the previously described embodiments of the lamp, which is dimensioned to accommodate electrical equipment, such as in particular a ballast for the LEDs.
  • electrical equipment such as in particular a ballast for the LEDs.
  • Within the luminaire component especially when curved, there is not enough room to provide a cavity sufficient to accommodate a ballast. Since the brackets usually extend straight from the luminaire component, they provide enough space to stow ballasts.
  • the connection between the lamp component and the LED support surfaces, in particular the boards on which the LEDs are mounted, can be made via an electrical connector, which is arranged in a connection region between the support arm and lamp component.
  • the luminaire comprises a luminaire component 1 in the form of a solid aluminum body, which in a cross section perpendicular to the circumferential direction, as in the Figures 1 and 2 represented, the shape of a groove defined.
  • a luminaire component 1 in the form of a solid aluminum body, which in a cross section perpendicular to the circumferential direction, as in the Figures 1 and 2 represented, the shape of a groove defined.
  • Within the channel are 36 LEDs 2, which are arranged at equal intervals or angular intervals along the radius of the lamp component. At least 12 LEDs are preferred. In specific embodiments, 24 LEDs or more are provided.
  • the lighting component 1 is made of solid aluminum to have the necessary stability for the lamp and because it also serves as a heat sink for the LEDs 2, which are designed as high-power LEDs and must be cooled accordingly serves.
  • the luminaire component 1 defines in its cross section a channel 3, which is closed at the bottom by a transparent cover 4, which forms the light exit surface of the luminaire.
  • a transparent cover 4 which forms the light exit surface of the luminaire.
  • the cross-sectional shape of the grooves may change slightly.
  • the location of the luminaire is shown in cross section, which is a support arm 5 attached to the lamp component 1.
  • FIG. 2 is shown another adjacent cross-section.
  • the cover 4 is made narrower in the area of the support arm than in the other areas along the circumference of the lamp.
  • the cover 4 completely closes the channel 3 on the underside of the lamp.
  • seals 6 are provided on both circumferential sides of the cover 4 to the lighting component 1.
  • the cover is formed by a plurality of spring elements 7, one of which in cross section in FIG. 1 is shown secured to a recess in the lamp component 1.
  • the cover 4 may even be firmly glued to the lamp component, because no accessibility to the LEDs is necessary due to the long life of the LEDs.
  • an LED 2 can be seen in cross section, which is mounted on a circuit board 8 and is electrically connected thereto.
  • the board 8 extends over a portion of the lamp component 1.
  • the board 8 forms a planar ring portion which comprises 1/6 of the circle of the lamp component.
  • the circuit board 8 can also extend over the entire region of the channel 3 or over the entire optically effective region of the lamp component 11. In particular, it can form a flat ring which is inserted in a channel 3 of the luminaire component 1.
  • an optical device 9 is provided below the LED 2, which deflects the light from the main emission of the LED, which in the drawing of Fig. 2 pointing vertically downwards.
  • the optical device 9 individually assigned to the LED comprises an approximately scalloped reflector 10, which in FIG FIG. 2 in cross section and in FIG. 1 can be seen from the side.
  • the shell-shaped reflector 10 is arranged below the LED 2 so that it deflects the light beam, which leaves the LED 2 in the direction of its main emission downward by 90 °. Due to the curved reflector shape of the shell-shaped reflector 10, the light beam divergent from the LED is at the same time partially bundled.
  • the light beam is then deflected a second time on a lateral reflection surface 11 and finally leaves the channel 3 through the transparent cover 4, as through the light beam 12 for the main emission direction of the light in FIG. 2 is shown.
  • the first lateral reflector surface 11 is arranged at an angle of 75 ° or 80 ° to the light exit surface 4 in order to effect the deflection downwards in the direction of the light exit surface 4.
  • This proportion of the light emitted by the LED via the gap 13 is relatively small; it is, for example, between 5% and 20% of the total luminous flux of the LED.
  • the part of the light passing through the gap 13 is incident on a second lateral reflection surface 14, which forms an angle of 85 ° with respect to the light exit surface. Due to the inclination, the light beam is directed to the light exit surface 4 and leaves the light exit surface, as in FIG. 2 indicated by the light beam 15.
  • the light beam 15, which represents the direction of the secondary light points in the direction of the lamp interior. Due to the secondary light, a brightening of the luminaire in the central area of the luminaire is achieved.
  • main light portion 12 and the minor portion 15 also in the reverse manner, as in FIG. 2 shown, can be done.
  • the main light components emitted by the LEDs cross approximately in the middle of the luminaire.
  • the overall light distribution of the luminaire remains very similar to that in FIG. 2 illustrated embodiment.
  • the cover 4 is transparent in the area between the reflective surfaces 11 and 14 and not or not completely transparent in its remaining areas, for example light-scattering or wholly or partially absorbing.
  • the cover 4 is opaque, which can be achieved, for example, by being printed with an opaque material.
  • a special feature of the luminaire is that the LEDs 9 individually associated optical devices 9 can be rotated in different angular positions with respect to the vertical axis through the LED.
  • the optical devices 9 can be mounted in different plug-in positions on the LED support surface, a reflector or reflector section or another carrier element.
  • a rotating device enabling continuous rotation may also be provided.
  • FIGS. 3a to 3c show three different embodiments of the lamp, in which the optical devices 9 are aligned differently. In the embodiment according to FIG. 3a have all the optical devices radially inward (each designated 0 °), whereby a homogeneous overall light distribution of the lamp is generated.
  • This embodiment or setting of the optical devices 9 is preferred when the lamp is to illuminate a larger place evenly.
  • the associated light field distribution measured as a light intensity distribution curve in a conical jacket around the vertical axis of the luminaire, is shown in FIG FIG. 4a shown. It is homogeneous, ie circular in shape.
  • the FIG. 3b shows an embodiment or setting of the optical devices 9, which is suitable, an elongated distance below the lamp, for example a Walkway or bike path to light.
  • the rotation angle of the optical devices 9 increases to + 50 ° and -50 °, respectively.
  • the light of the LEDs with the deviating from 0 ° rotation angle of the optical device 9 is delivered with tangential component of the lamp.
  • the light of the main emission of these LEDs is therefore also approximately along the track to be illuminated, which in FIG. 3b corresponds to the vertical direction.
  • the resulting light field distribution is in FIG. 4b shown.
  • FIG. 3c Another embodiment or setting of the LEDs associated optical elements 9 is in Figure 3c shown.
  • This embodiment produces a so-called Lichtbandknickung (see Figure 4c ), which is advantageous for illuminating a road course from a side-mounted street lamp street lamp.
  • the setting of the optical devices 9 are not arranged mirror-symmetrically with respect to the vertical planes through the lamp, but is different on the two halves of the lamp.
  • the generated light field distribution is therefore not symmetrical aligned along the vertical direction of the luminaire, as in the FIG. 4b but has a kink.
  • a street laterally of the lamp, on the opposite side of the lamp indicated by the symbol 16 advantageously illuminate without unnecessarily brightly illuminating the house facade.
  • any street sign can be illuminated under or next to the luminaire.
  • the optical devices 9 associated with the LEDs can still be set in different positions at the installation site of the luminaire, so that the light field contour can still be set during assembly of the luminaire can.
  • the position of the optical device is determined during assembly. It can be provided in particular that the optical device is designed so that it can be mounted for each LED only in a very specific position, this position may be different for different LEDs. It can also be provided that a plurality of discrete positions are provided for each LED, in which the respective optical device can be mounted.
  • the illustrated embodiment of the lamp has on the lamp component 1 in the circumferential direction on a support arm 5, which, as in FIG. 1 shown hollow. Inside the support arm 5 can be electrical equipment, in particular the ballast, arrange. Due to the curvature of the lamp component is within the lamp component usually no place.
  • the ballast is connected via a connector 17 and other electrical connections, which are not shown in the drawings.
  • the support arm 5 extends from the lamp component 1 down toward the interior of the circular lamp component 1, as in the projection in the FIGS. 3a to 3c you can see. There, the support arm 5 is mounted on a lamppost. According to other embodiments, more than just a support arm may be provided. In this case, two opposing support arms or more support arms, which are fastened at uniform angular intervals in the periphery of the luminaire component 1, are preferred.
  • a channel-shaped reflector 30 is inserted into the channel 3 of the lamp component.
  • This reflector consists of six reflector sections 32 which, when combined, form an annular groove and cover one sixth of the circumference in each case, that is to say an angle of 60 °.
  • Such a reflector section 32 is in Fig. 5 in a plan view and in Fig. 9 to see in a partial perspective view. How best in Fig. 9 can be seen, the reflector portion 32 has a bottom 32a and two side walls 32b and 32c, which the two reflection surfaces 11 and 14 of the in the Fig. 1 and 2 shown embodiments corresponds.
  • the side walls 32b and 32c may in particular, as described above for the reflecting surfaces 11 and 14, be inclined to the light exit surface in the assembled state of the reflector section 32, wherein the light exit surface included angle may be in a cross section perpendicular to the linear extension of the channel 3 in the previously discussed angle ranges.
  • a plurality of, in this embodiment, four approximately circular openings 34 are provided in the bottom 32a of the reflector portion 32 .
  • Each of these openings 34 has two recesses 34a, which are diametrically opposed to each other with respect to an axis A through the center of the opening 34, and a further bulge 34b circumferentially offset with respect to these recesses 34a.
  • the bulge 34b is offset from the bulges 34a by approximately 90 ° and has an outwardly curved shape, for example in the form of a circular arc section, while the bulges 34a have an approximately rectangular shape.
  • the reflector sections 32 are arranged in the channel 3 of the luminaire component 1 such that the board 8 lies between the bottom 32a of the reflector section 32 and the bottom of the channel 3 and the LEDs 2 are each located in the region of one of the openings 34.
  • an optical unit 36 is used as the relevant LED 2 associated optical device, as in Fig. 6 alone in a perspective view and in Fig. 7 and 8th in a plan view and a cross-sectional view, respectively;
  • Fig. 9 shows an assembled and a partially inserted optical unit 36 in a perspective view.
  • the optical unit 36 is preferably in one piece and also preferably made of plastic and has a shell-shaped reflector 38, a support edge 40, an elastic locking lug 42 and a reflecting surface 44 on the opening of the shell-shaped reflector 38 side facing and two reflecting surfaces 46 and 48 on the the opening of the shell-shaped reflector 38 opposite side.
  • the interior of the optical unit 36 has a cavity bounded by the reflective surfaces 44 and 46 and open upwards to the scalloped reflector 38, so that light in this cavity is on the one hand to the reflecting surfaces 44 and 46 and on the other the inner surface of the shell-shaped reflector 38 can propagate out to be reflected there.
  • the area of the reflecting surfaces 46 and 48 there is a gap 50 between the lower edge 52 of the scalloped reflector 38 and the reflecting surfaces 46 and 48, so that light can escape from said cavity through this gap 50 to radiate directly from this gap 50 to become or to the reflection surface 48 to be reflected.
  • the associated LED 2 is located as in Fig.
  • the annular reflector 30 consists of six individual parts 32, it may also consist of more or fewer individual parts, or may be formed integrally as a whole, so as to form a one-piece, self-contained, e.g. forms annular groove.
  • the support rim 40 has a rear approximately semi-circular portion 60 with circumferentially extending arcuate slots 62 which lies on the side facing away from the opening of the scalloped reflector 38 side, and two deeper, ie closer to the bottom of the optical unit 36 lying extensions 64th which are connected by a step 66 to the section 60 and extend forward over a relatively short portion of the circumference, so that they, as best in Fig. 7 can be seen to form two lateral extensions on the side of the approximately circular cylindrical body of the optical unit 36, the front edge of which is formed by the substantially annular, the opening of the shell-shaped reflector 38 opposite reflecting surface 44. Below the edge 60, the elastic locking lug 42 is provided below the edge 60.
  • the locking lug 42 and the lower side extensions 64 on the other hand is a particular orientation of the optical unit 36th given when it is inserted into the reflector 30 and the reflector portion 32.
  • an optical unit 36 attached in a tilted position wherein the step-shaped portion 66 comes to rest in the region of the bulges 34a of the opening 34 and the lateral extensions 64 of the support rim 40 engage under the bottom 32a of the reflector portion 32.
  • the latching lug 42 in the region of the recess 34b of the opening 34 against the bottom 32a of Reflector portion 32 is pressed and locked, as best in Fig. 8 can be seen, below the bottom 32 a, while the rear portion 60 of the supporting edge 40 rests on the bottom 32 a of the reflector portion 32, so that the bottom 32 a between the rear portion 60 of the supporting edge 40 and the latch is included, so that the optical Unit 36 is thereby fixed.
  • the two lateral extensions 64 on the underside of the bottom 32a ie on the side facing away from the reflector 38 side of the reflector portion 32 to the plant. This is especially in Fig. 7 to recognize where the bottom 32a is shown as a hatched area and the course of the extensions 64 is indicated below the bottom 32a.
  • the optical unit 36 can be locked in a fixed predetermined orientation with respect to the channel 3 or the channel-shaped reflector 30, this orientation being predetermined by the shape of the openings in the manufacture of the reflector section 32 or of the reflector 30.
  • the orientation of the optical unit 36 which is assigned to a respective LED 2, already fixed during manufacture. This facilitates the assembly and allows a precise alignment of the optical unit 36 according to the design specifications, without elaborate adjustments are required.
  • a flexibility in lighting design can be achieved by providing standardized reflector sections 32, each with a specific orientation of the holes (and thus the optical units to be used 38).
  • a respective individual sequence of openings with specific orientations can also be punched with a, for example, computer-controlled punching tool, in which the orientation of the punched opening can be determined individually.
  • the efficiency of the luminaire is increased.
  • these reflection surfaces can also be used advantageously for the design of the light intensity distribution.
  • the optical unit 36 is in a preferred embodiment made of plastic, wherein at least the light emitting diode 2 facing the inner surface of the shell-shaped reflector 38 and the reflective surfaces 44, 46 and 48 are reflective, in particular mirror-reflective, e.g. by a reflective coating, applying a reflective foil or the like.
  • Other parts of the optical unit, for example the back of the reflector 36, may also be reflective or mirror-like, in order to increase the efficiency and / or to achieve a specific light distribution.
  • the different orientation of the optical device formed here by the optical unit 36 is advantageously used to achieve a specific luminous intensity distribution of the luminaire, as described above.
  • the light is not on a circular design, as in the FIGS. 3a to 3c shown, restricted.
  • Umfarigsformen added with closed peripheral shapes due to the high variability with respect to adjustable light field contours by aligning the individual optical devices on the LEDs are preferred.
  • the lighting component does not need to be exposed (although this is advantageous in terms of the necessary cooling) but may also have a cover.
  • the entire light can be covered at the top by a common plastic cover to protect against environmental influences.
  • the light can be surrounded by a transparent at least in the region of the light exit surface cover.
  • the luminaire component has a plurality of grooves and / or a plurality of channel-shaped reflectors, which are preferably close to each other. These grooves or channel-shaped reflectors can in particular form a plurality of concentric circles which adjoin one another directly.
  • the luminaire component 1 has two straight, preferably parallel grooves or channel-shaped reflectors, wherein the optical devices associated with the LEDs are designed and arranged such that the optical devices in a groove formed in the lamp component is formed by a channel-shaped reflector element that emit light in the opposite direction as the optical devices in the other channel, wherein oppositely in this context may mean that the optical devices in the one channel completely or at least a majority of the light in a first Give half space (0 ° to 180 °) and leave the optical devices of the other channel the light completely or at least majority in the other half-space (180 ° to 360 °).
  • the individual optical devices in a groove can be oriented differently, for example, to bring about a light band bending or to form the light distribution in a different way.

Claims (14)

  1. Lampe, en particulier lampe extérieure, ayant une pluralité de DEL (2) en tant que source lumineuse, la lampe présentant un composant de lampe émetteur de lumière (1) s'étendant dans une forme linéaire et le composant de lampe (1) définissant un sillon (3) dans une section perpendiculaire à l'extension linéaire, le côté du sillon ouvert vers l'extérieur formant une surface de sortie de lumière (4) de la lampe et les DEL étant agencées le long de l'extension linéaire du composant de lampe (1) sur un côté du sillon (3) opposé à la surface de sortie de lumière (4) sur une surface de support de DEL (8), en particulier une plaque, un dispositif optique (9 ; 36) étant adjoint individuellement à chaque DEL pour dévier la lumière d'une direction de rayonnement principale de la DEL concernée, caractérisée en ce qu'au moins sur un côté du sillon (3), dans une zone comprise entre la surface de sortie de lumière et la surface de support de DEL (3), il est prévu une première surface de réflexion latérale (11 ; 32b), un faisceau lumineux partant d'une DEL (2) étant dévié au moins deux fois, une première déviation étant réalisée par le dispositif optique (9 ; 36) adjoint individuellement aux DEL (2) et une deuxième déviation étant réalisée sur la surface de réflexion latérale (11 ; 32b) dans la direction de la surface de sortie de lumière et ledit faisceau lumineux dévié deux fois contenant la majeure partie de la lumière partant de la DEL.
  2. Lampe selon la revendication 1, dans laquelle les dispositifs optiques (9 ; 36) adjoints aux DEL produisent une déviation de la direction de rayonnement principale des DEL (2) respectives de 50° à 100° dans la direction de la première surface de réflexion latérale (11 ; 32b).
  3. Lampe selon l'une des revendications précédentes, dans laquelle les dispositifs optiques (9 ; 36) adjoints individuellement aux DEL peuvent être montés ou réglés dans des angles de rotation différents par rapport à un axe passant à travers les DEL (2) respectives.
  4. Lampe selon l'une des revendications précédentes, dans laquelle les dispositifs optiques (9 ; 36) adjoints individuellement aux DEL présentent une surface de réflexion (10 ; 38) courbée, en particulier réalisée en forme de coquille.
  5. Lampe selon l'une des revendications précédentes, dans laquelle la première surface de réflexion latérale (11 ; 32b) inclut, dans la section précitée, un angle compris entre 60° et 90°, et de préférence entre 70° et 85°, par rapport à la surface de sortie de lumière (4).
  6. Lampe selon l'une des revendications précédentes, dans laquelle une deuxième surface de réflexion latérale (14 ; 32c) est agencée en opposition avec la première surface de réflexion latérale (11 ; 32b) dans le sillon.
  7. Lampe selon la revendication 6, dans laquelle la deuxième surface de réflexion latérale (14 ; 32c) inclut, dans la section précitée, un angle compris entre 60° et 90°, et en particulier entre 80° et 90°, par rapport à la surface de sortie de lumière (4).
  8. Lampe selon la revendication 6 ou 7, dans laquelle une partie de la lumière émise par les DEL atteint directement la deuxième surface de réflexion latérale (14 ; 32c) en passant devant les dispositifs optiques (9 ; 36) adjoints individuellement aux DEL et elle est déviée à ce niveau vers la surface de sortie de lumière (4).
  9. Lampe selon l'une des revendications 1, 2 ou 4 à 8, caractérisée en ce qu'un ou plusieurs dispositifs optiques (36), qui sont chacun adjoints individuellement à une DEL (2), sont conçus de telle sorte qu'ils ne peuvent être montés que dans un angle de rotation prédéfini ou que dans l'un de plusieurs angles de rotation prédéfinis discrets par rapport à un axe passant à travers la DEL (2) respective.
  10. Lampe selon l'une des revendications 1 à 9, caractérisée en ce qu'un dispositif optique (36) est sécurisé contre une rotation autour de l'axe précité passant à travers la DEL (2) respective qui le ferait sortir de la position correspondant à un angle de rotation établi au moyen d'un dispositif agissant de façon mécanique (66).
  11. Lampe selon l'une des revendications 1 à 10, caractérisée en ce que le dispositif optique (36) est relié avec le composant de lampe (32) supportant le dispositif optique (36) au moyen d'une liaison à encliquetage (42).
  12. Lampe selon l'une des revendications 1 à 11, caractérisée en ce qu'un dispositif optique adjoint individuellement à une DEL (2) est réalisé de telle sorte qu'il peut être monté sur le composant de lampe (32) supportant le dispositif optique (36) en tant qu'unité complète.
  13. Lampe selon l'une des revendications 1 à 12, caractérisée en ce que le dispositif optique (36) présente un réflecteur courbé (38) pour dévier la lumière d'une direction de rayonnement principale de la DEL respective ainsi qu'un dispositif (46, 48, 50, 52) pour émettre une part de lumière secondaire en passant devant la surface réfléchissante du réflecteur courbé, laquelle est émise dans une autre direction que la part principale de la lumière qui est émise par la DEL directement ou en coopération optique avec ledit dispositif optique (36).
  14. Lampe selon la revendication 13, caractérisée en ce que ledit dispositif d'émission d'une part de lumière secondaire présente une ou plusieurs surfaces de réflexion (46, 48).
EP11000431.4A 2010-01-25 2011-01-20 Lampe à DEL linéaire, notamment lampe annulaire à DEL Active EP2348250B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010005618 2010-01-25
DE102010014210A DE102010014210A1 (de) 2010-01-25 2010-04-08 Linienförmige LED-Leuchte, insbesondere LED-Ringleuchte

Publications (2)

Publication Number Publication Date
EP2348250A1 EP2348250A1 (fr) 2011-07-27
EP2348250B1 true EP2348250B1 (fr) 2015-11-25

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EP11000431.4A Active EP2348250B1 (fr) 2010-01-25 2011-01-20 Lampe à DEL linéaire, notamment lampe annulaire à DEL

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DE (1) DE102010014210A1 (fr)

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Publication number Priority date Publication date Assignee Title
AT512105B1 (de) * 2011-10-17 2013-08-15 Heper Moonlight Europ Gmbh Leuchtmittel
NO20180113A1 (no) * 2018-01-25 2019-07-26 Kjell Inge Torgersen Lyslenke for gatebelysning

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Publication number Priority date Publication date Assignee Title
JP2001053341A (ja) * 1999-08-09 2001-02-23 Kazuo Kobayashi 面発光表示器
CN100492685C (zh) * 2003-12-05 2009-05-27 三菱电机株式会社 发光装置及利用该发光装置的照明器具
WO2008100894A1 (fr) * 2007-02-12 2008-08-21 Lumination Llc Systèmes d'éclairage par del pour vitrines présentant des produits
US7784967B2 (en) * 2007-10-30 2010-08-31 Pervaiz Lodhie Loop LED light
DE202008004449U1 (de) * 2008-04-01 2011-06-30 THORN Europhane S.A., Cedex Leuchte zum Beleuchten von Gehwegen, Fußgänger-Überwegen oder Plätzen

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EP2348250A1 (fr) 2011-07-27

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