EP2273185B1 - LED light element with light diverter - Google Patents
LED light element with light diverter Download PDFInfo
- Publication number
- EP2273185B1 EP2273185B1 EP10168342.3A EP10168342A EP2273185B1 EP 2273185 B1 EP2273185 B1 EP 2273185B1 EP 10168342 A EP10168342 A EP 10168342A EP 2273185 B1 EP2273185 B1 EP 2273185B1
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- EP
- European Patent Office
- Prior art keywords
- light
- leds
- carrier
- circuit
- previous
- 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.)
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Images
Classifications
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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
- F21V11/00—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00
- F21V11/06—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00 using crossed laminae or strips, e.g. grid-shaped louvers; using lattices or honeycombs
-
- 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
- F21V13/10—Combinations of only two kinds of elements the elements being reflectors and screens
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V23/00—Arrangement of electric circuit elements in or on lighting devices
- F21V23/04—Arrangement of electric circuit elements in or on lighting devices the elements being switches
- F21V23/0442—Arrangement of electric circuit elements in or on lighting devices the elements being switches activated by means of a sensor, e.g. motion or photodetectors
-
- 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
- F21V3/00—Globes; Bowls; Cover glasses
- F21V3/02—Globes; Bowls; Cover glasses characterised by the shape
-
- 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
- F21V3/00—Globes; Bowls; Cover glasses
- F21V3/04—Globes; Bowls; Cover glasses characterised by materials, surface treatments or coatings
-
- 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
- F21V5/00—Refractors for light sources
- F21V5/002—Refractors for light sources using microoptical elements for redirecting or diffusing light
-
- 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
- F21V7/0091—Reflectors for light sources using total internal reflection
-
- 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
- F21S8/08—Lighting devices intended for fixed installation with a standard
- F21S8/085—Lighting devices intended for fixed installation with a standard of high-built type, e.g. street light
- F21S8/088—Lighting devices intended for fixed installation with a standard of high-built type, e.g. street light with lighting device mounted on top of the standard, e.g. for pedestrian zones
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V7/00—Reflectors for light sources
- F21V7/0008—Reflectors for light sources providing for indirect lighting
- F21V7/0016—Reflectors for light sources providing for indirect lighting on lighting devices that also provide for direct lighting, e.g. by means of independent light sources, by splitting of the light beam, by switching between both lighting modes
-
- 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
- F21V7/0083—Array of reflectors for a cluster of light sources, e.g. arrangement of multiple light sources in one plane
-
- 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
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/10—Light-emitting diodes [LED]
Definitions
- the present invention relates to an LED luminaire insert with light-guiding element for subsequent installation in luminaires, e.g. in outdoor lights.
- Object of the present invention is therefore with the least possible effort existing luminaires, as they are found in particular in the field of outdoor lighting, with a view to the more efficient use of energy to improve.
- the invention achieves the object by a luminaire insert according to claim 1.
- the natural number n is in particular 2,3,4,5 or 6.
- the luminaire insert further comprises a structural element, which is connected to the carrier element and serves to support the carrier element in the luminaire housing, at least one electrical operating device (50) for the electrical supply of LEDs and a plurality of LEDs, which are arranged on at least one of the circuit carriers.
- at least one circuit carrier LEDs including OLEDs are to be understood, arranged.
- one or more further electrical components can be arranged on the circuit carriers.
- the circuit carriers can have a sensor, in particular a temperature sensor, for example a temperature-dependent resistor.
- the circuit carrier can have a current regulation circuit.
- conductor tracks may be arranged on the circuit carriers, which contact the LEDs and / or electrical components.
- the circuit carrier may have a cylindrical shape, on the outer surface of which the LEDs are arranged. In this way, an arrangement can be achieved in which the LEDs can radiate in different spatial directions. The arrangement of the LEDs affects the overall light distribution of the lamp.
- circuit carriers may be used which have a substantially planar surface.
- a plurality of circuit carriers may be composed such that respective adjacent circuit carriers are aligned at one edge.
- an n- corner may result, in particular in the cross section of the arrangement, the LEDs being arranged on the outside of the n- corner.
- the arrangement of circuit carriers forms a uniform n- corner, for example a uniform hexagon. At a polygon of at least five corners, a relatively uniform light distribution can be achieved by 360 ° of the luminaire insert.
- circuit boards with a flat surface.
- circuit boards with a flat surface.
- circuit boards with a flat surface.
- the use of five or six circuit carriers offers.
- a higher number may allow a finer angular distribution of the radiated light, but on the other hand requires a higher assembly outlay.
- the circuit carrier can be designed in particular as a printed circuit board (PCB). Further, it may be designed to improve heat dissipation as a metal core printed circuit board (MCPCB).
- the circuit carrier may have a metallic core, which is provided on its surface with a dielectric. In particular, conductor tracks can be arranged on the dielectric. Preferred here is the use of a metallic core of aluminum.
- surface portions of the carrier element itself may be formed as a circuit carrier.
- metallic conductor tracks are mounted on the surface of the carrier element or an electrical insulating layer of the surface of the carrier element.
- the LEDs can be arranged so that they are individually contactable from the outside and can be controlled individually.
- the circuit carrier may include external terminals that are particularly for electrical energy supply. Preferably, these can be designed as a plug connection.
- the circuit carrier may be provided with a protective coating which serves to protect against moisture. The coating can be designed as a transparent coating or coating.
- the carrier element in cross-section perpendicular to its longitudinal axis have an outer profile which corresponds to the cross section of the arrangement of the circuit carrier or at least similar.
- the carrier element may have a n- angular cross-section.
- the support member may be a tubular, hollow member, on the outer surface of which the circuit carriers are arranged.
- the carrier element may in particular have channels in order to fasten the circuit carriers, for example by means of screws.
- the carrier element can be solid.
- the support element may comprise aluminum.
- the support member may comprise iron or copper.
- At least one circuit carrier can be fastened on the carrier element by means of a screwing or clamping device or by means of an adhesive method.
- a forming cavity between the circuit carrier and the carrier element may be filled with a thermally conductive material (e.g., a thermal grease).
- the invention further provides a structural element.
- This serves for the mechanical stability and the attachment of other components of the lighting insert, in particular the carrier element, in the luminaire housing.
- Preference is given here to the use of a metallic material.
- the structural element may be made of aluminum. Due to the high thermal conductivity of aluminum, this allows an efficient dissipation of the heat generated in the LEDs.
- the structural element can be provided with outer surfaces, via which the heat energy can be released into the air.
- aluminum is a relatively low density material which minimizes the overall weight of the structure.
- the structural element may also be a casting or have a construction of sheets.
- the structural element is further provided with a fastening means to secure the lamp insert to the lamp.
- the structural element may have a thread.
- other fastening means such as in particular means may be provided for a latching connection.
- the carrier element can also comprise fastening means for a component of the luminaire to be renovated, for example for a lampshade or luminous lid.
- a fastener such as a threaded pin, may be provided on the support member for use in mushroom lights to secure a roof member of the lamp housing.
- the luminaire insert can have one or more cover elements. These serve in particular to cover portions of the luminaire insert, which are not provided with LEDs or reflectors.
- the cover elements can be made of a metallic material, in particular aluminum.
- the cover can also contribute to the cooling of the lamp.
- openings may be provided for ventilation.
- the cover elements may have surface areas which contribute to the release of heat loss to the surrounding air.
- the cover element may be formed in one piece on the structural element.
- the cover may have an opening or recess through which an electrical connection of the lamp takes place. The opening or recess may also have a lid which is fixed to the cover.
- the at least one operating device of the luminaire insert is used for the electrical supply of the LEDs.
- the operating device may also contain logic.
- the operating device may also include a control module (e.g., a Siteco Light Control (SLC) device).
- SLC Siteco Light Control
- the use of a control module makes it possible to adapt the lighting level to the actual requirements. This offers advantages, in particular with regard to the use of the luminaire insert in traffic route lighting. For example, the lighting level at accident sites or in unfavorable weather conditions can be increased by an appropriate regulation of the street lighting, whereby a risk of accidents can be reduced.
- the operating device may include an electrical converter. This serves to convert the electrical energy provided from the outside into a voltage which is required for the operation of the LEDs.
- the electrical converter can be designed as a down converter, which converts a higher voltage provided from the outside into a lower voltage suitable for operating the LEDs.
- the light-guiding elements may have a reflective or partially reflecting surface coating.
- the coating may in particular comprise the materials aluminum, silver or gold. In this case, it is possible in particular to apply the material by means of a vacuum metallization process.
- a coated portion of the surface may be smooth or frosted.
- a coated partial area of the surface can be provided with facets.
- the light-directing element may comprise further molded or insertable refractive or light-diffusing elements, e.g. a Fresnel lens, a prism, a diffuser or a combination of these elements.
- the light-guiding element is embodied in a plurality of segments which each have means for the mechanical connection of the segments to one another.
- the means may be integrally formed from the material of the light guide unit or attached as separate elements to this.
- the connecting elements can be formed so that individual segments can be connected to each other both in the horizontal and in the vertical direction.
- By arranging different segments in the vertical direction i. stacking of the segments one above the other, in particular the light distribution in the radial direction relative to the luminaire can be influenced.
- By connecting different segments in the horizontal direction the light distribution in annular areas, which extend concentrically around the luminaire, can furthermore be influenced.
- the individual segments can be designed differently. In particular, different segments may have different dimensions in the horizontal and vertical directions.
- the light guide member includes reflector surfaces to reflect the light emitted by the LEDs.
- the desired light distribution can be adjusted.
- two partial regions of the reflectors, which direct light into the near or far region of the luminaire can lie one above the other, for example within a segment of the light-directing element.
- the light-guiding element forms a plurality of compartments, each comprising two opposite or four approximately box-shaped arranged reflector surfaces.
- the reflector surfaces which are arranged transversely to the longitudinal axis of the carrier element, inclined relative to the longitudinal axis of the carrier element.
- the compartments are constructed of the segments of the light-guiding element.
- One segment in each case can comprise the upper half and the lower half of two adjacent compartments. It is also envisaged that a segment of the light-guiding element comprises one or more complete compartments, each formed by two or four reflector surfaces.
- the segments each comprise at least two reflector surfaces. At least some of the segments of the light guide element may have an identical shape.
- parts of the light-guiding element can be connected to one another with the aid of a supporting structure.
- a separate support structure can in particular increase the mechanical stability of the structure. Furthermore, this facilitates the use of different parts of the light-guiding element, for example for a combination of segments of different dimensions.
- the support structure itself can be made of a transparent, opal material. In particular, the support structure be made of plastic. Alternatively or additionally, the support structure may also comprise metallic elements.
- the support structure may be visible from outside.
- a portion of the support structure may be formed as a light guide, whereby the appearance of the lamp can be selectively influenced.
- the support structure may further be provided with fluorescent or light-scattering particles, which make portions of the support structure appear as a luminous framework.
- the light distribution of the luminaire is influenced, in particular, by the arrangement of the individual LEDs on the circuit carrier, the arrangement of the circuit carriers in the luminaire, and the arrangement and design of the light-deflecting elements.
- an illumination intensity can be intensified by an increased population density with LEDs in an angular range of the LED module.
- Such an embodiment may be advantageous in order to better illuminate portions of the street in an application for street lighting, and on the other hand to illuminate portions which are located off the street less strongly.
- the luminaire insert according to the invention can be used in the field of indoor and outdoor lighting. Particularly advantageous is the use in the field of outdoor lighting, e.g. in the area of traffic route lighting or to illuminate parks or squares. Due to the interchangeability of the luminaire insert this can be used in different luminaire families. It is possible to use e.g. in mushroom lights, pole lights, lanterns or bell lights.
- the luminaire insert can be designed so that it meets the mechanical requirements of the individual luminaire families.
- the luminaire insert for use in a bell light can be designed so that it can be mounted in a hanging position.
- the LEDs may be arranged on the circuit carriers so that the light distribution is concentrated substantially in two directions.
- the LEDs are aligned so that their emission direction has a horizontal projection, which includes an angle of about 90 ° to about 180 °, in particular about 100 ° to about 160 °, for example about 120 °.
- Such a light distribution is particularly advantageous for use as a residential street lighting, because the light of the lamp, which is located at the edge of the road, is discharged along the street or sidewalk next to the road, but not towards the house facade.
- the light distribution in a horizontal plane may be approximately isotropic. This can be done in particular by an arrangement of the LEDs and the light-guiding elements, which is approximately radially symmetrical in a horizontal sectional plane.
- the circuit carriers used in one embodiment may have the same dimensions and the same LED distributions, and be arranged to each other in a manner such that they form a regular n- corner in a horizontal cross-section. Such a light distribution is advantageous, in particular for a court lighting.
- the level of illumination provided by the luminaire may be achieved by dimming individual LEDs or LED groups.
- the lighting level can be influenced in a targeted manner via an activation or deactivation of individual LEDs or LED groups.
- the number of LEDs emitting in a certain solid angle range may vary.
- the total number of LEDs and their maximum power output is decisive for the dimensioning of the operating device.
- the use of about 5 to about 200 LEDs, in particular 10 to 100 LEDs, in particular 20 to 50 LEDs, is advantageous.
- the distribution of the LEDs on the circuit carrier or the circuit carriers can be particularly inhomogeneous. This results in a light distribution of the luminaire, which shows different intensity in different spatial areas.
- the LEDs may be arranged in rows on the circuit carrier. These rows may e.g. vertically or horizontally. In a horizontal row, for example, 1 to 5 LEDs can be arranged side by side. A similar dimensioning is also possible for vertical rows. To achieve a special light distribution and an inhomogeneous distribution is possible.
- the individual LEDs on a circuit carrier may, according to an embodiment, be contacted by means of conductor tracks. A contacting by means of a separate wiring is possible.
- the LEDs are soldered onto the circuit carrier. Also possible is a fastening by means of a bonding method. These methods also ensure efficient heat dissipation from the LEDs into the circuit carrier. Furthermore, a fastening by means of an adhesive method is possible.
- components of the LED module which are important for the heat flow such as the structural element, the carrier element and the cover element, have a thermally highly conductive material, such as e.g. Have aluminum.
- the carrier element and / or the structural element can be made so that inside the LED module, a cavity is formed, through which air can flow.
- a cavity is formed in the interior of the LED module.
- the lamp insert may further comprise a fan, which contributes to the cooling.
- the air flow generated by the fan facilitates thermal convection, by which heat from the components of the Light can be released into the air.
- the LED module may further comprise a controllable heat source in the upper region, by means of which convection is additionally stimulated.
- the use of a venturi nozzle is also possible.
- some components such as e.g. the structural element or the carrier element, as well as the cover have additional, devisver Anlagenrnde features.
- the surface enlarging features may be present as ridge-shaped or lenticular surface profiles.
- FIG. 1 is an exploded view of a light insert shown.
- a support member 20 which has an elongated shape and surface portions 21 defined on the peripheral surface about the longitudinal axis.
- the surface portions 21 of the support member 20 are each formed approximately flat and define in a cross section perpendicular to the longitudinal axis of the support member a regular hexagon.
- a groove 22 is further provided in the longitudinal direction of the support member 20, which is adapted to the fact that screws and guide elements can engage at any height along the groove 22.
- a circuit carrier 30 is attached by means of screws 31 through holes 32 (see FIG FIG. 2 which represents a circuit carrier 30 at a distance from the carrier element 20) on the circuit carrier LEDs 35 are arranged.
- the support member 20 is formed of aluminum to provide good heat conduction. It connects down a structural element 10, which is formed in the present example of several angled elements, also made of aluminum. On the side facing away from the support member 20 of the structural element 10 bends 11 are provided by means of which the lamp insert can be fixed in a housing of a lamp in an upright position.
- the structural element 10 is further covered on the outside with covers 60. These covers 60 are also formed of aluminum and support the cooling of the lamp insert by ambient air.
- an operating device 50 is arranged within the structural element 10. The operating device 50 can be connected by means of an electrical connection terminal 51 on the structural element 10 to the existing electrical supply lines in the luminaire.
- the operating device 50 has a voltage converter to convert the voltage of the mains supply to the required voltages for the operation of the LEDs.
- the operating device 50 supplies via cable (not shown in the figures) the circuit carriers 30 with the necessary supply voltage of the LEDs 35, which are arranged on the circuit carrier 30.
- a control module 55 is connected to the operating device 50.
- the control module 55 enables the LEDs 35 to be mounted on the circuit carrier 30 in accordance with predetermined control parameters, such as those shown in FIG. the time of day or due to measuring sensors on the lamp insert to switch and dimming. In particular, individual groups of LEDs 35 on the circuit carriers 30 can be switched or dimmed differently.
- FIG. 7 the luminaire insert is shown in a street lamp, a so-called mushroom lamp.
- a transparent housing cover 82 of the lamp insert can be seen in an upright position.
- only the covers 60 can be seen to the outside.
- a threaded pin 27 is further provided on the upper side of the support member 20.
- the structural element 10 is secured with the angle lugs 11 in a lamp housing base 83 on the end of a lamp post 81 (in FIG. 7 obscured by a pedestal 83).
- the structural member 10 and the support member 20 are stably constructed so that they can also support the lamp housing from the base 83 of the cover 82 and the housing roof 80.
- a light-guiding element 40 Arranged around the circumference of the carrier element 20 or the circuit carrier 30 is also a light-guiding element 40 which, in the example shown, is formed from a plurality of segments 41 stacked one above the other.
- the FIGS. 4a and 4b each show a single segment 41 as a single part. Two segments 41 connected to each other result in an approximately annular, more precisely a hexagonal structure, which can be arranged around the carrier element 20 or the circuit carrier 30.
- On the inside of the segments 41 of the light guide 40 locking lugs 45 and projections 46 are provided, with which the segments 41 can be attached to the circuit carriers 30 in corresponding recesses.
- the structure of the light-directing element 40 can be attached from the individual parts around the circumference of the carrier element 20 or the circuit carrier 30.
- the photometric function of the individual segments 41 of the light-guiding element 40 is in the FIGS. 5a and 5b shown.
- the segments 41 have reflection surfaces 401 and 402 which are inclined one above another in the horizontal direction.
- the reflector surface 402 provides due to their arrangement above the LED 35 that light is reflected according to the beam path 1001 down. This radiation contributes to the lighting in the area close to the light (eg around 10 m around the luminaire).
- Lateral reflector surfaces 404 ensure that the light distribution, which is generated by a respective LED 35, is limited in the lateral direction. As a result, the reflector surfaces 404 contribute to the fact that the light distribution of the luminaire is focused more strongly on the radials of the longitudinal axis in the middle of the two reflector surfaces of the carrier element.
- the latter still has optical screening elements 420 in the form of light-scattering transparent plates 420, which extend approximately parallel between two segments 41 and at a small distance from the circuit carriers 30.
- the anti-glare element 420 is held by means of positioning holes 403 between two respective segments 41.
- FIGS. 8a and b 9a and b show two alternative embodiments of the anti-glare element 420 'and 420 ", respectively FIGS. 8a and 8b 4, the anti-glare element has lens-shaped elevations 422 'with a radius of curvature R arranged in a plurality of rows 421' on one side of the anti-glare element.
- This optical structure is selected such that the light from the LEDs is deflected downwards in a focused manner.
- the middle row of lenses is at the thickest point below a major axis of LEDs, causing the deflection down.
- the shape of the lenticular projections 422 ' is selected so that the light is focused more in the vertical direction than in the horizontal direction.
- the lenticular elevations form wedge-shaped part cylinders with a radius of curvature R.
- the height H of the rows and the width A of the lenticular projections 422 ' are preferably chosen so that a shift of the LEDs relative to the anti-glare element 420' in a plurality of LEDs without optical effect remains.
- the lenticular projections are arranged adjacent to each other in the rows. In other embodiments, gaps may still be provided therebetween.
- FIG. 10 shows in cross-section the anti-dazzle elements 420 "in the installed state, the positioning pin 423" engages in the positioning holes (in the FIG. 10 not visible) of the segments of the light-guiding element.
- the anti-glare element 420 is held in a defined position relative to the LEDs 35.
- a refractive device such as e.g. a lens
- two opposite reflector surfaces 401 and 402 and the two intermediate lateral reflector surfaces 404 are integrally provided in a segment of the light-guiding element.
- the stacked segments 41 of the light-guiding element 40 therefore each form, through their reflection surfaces 401, 402 and 404, a compartment which is assigned an LED or a row of LEDs on the circuit carrier.
- the light control can be adjusted by selecting the angle of the reflector surfaces 401, 402 and 404 precisely to the requirements, because the LED 35 emits light as a nearly point-shaped radiator with a defined scattering angle.
- the light-guiding element 40 are much more precisely matched to the arrangement of the light sources according to the present embodiment.
- FIGS. 6a to 6g The arrangement of LEDs on the circuit carriers 30 is shown in FIGS FIGS. 6a to 6g shown. It is to be understood that different circuit carriers may be provided on different sides of the support member 20 of a lamp insert according to an embodiment of the invention.
- the circuit carrier 30 has an electrical connection 301 in the form of a plug, which is connected to the operating device 50 or the control module 55 via an electrical cable (not shown).
- On the circuit carrier 30 are further arranged in a plurality of rows and columns positions 303, which are connected to electrical traces (not shown) on the circuit substrate 30 to solder at these positions LEDs.
- bridge elements 302 are each provided for LED position. By plugging or unplugging 0 ⁇ jumpers, the electrical supply of a designated position for the LEDs can be activated or deactivated.
- FIGS. 6b to 6g indicate how intended positions 303 can be populated with LEDs. All LED positions can be occupied by active LEDs ( FIG. 6d ). Such an arrangement is preferred for a side of the support member 20 which faces in a direction in which a particularly large amount of light is to be emitted. For circuit carriers pointing in directions where less light is to be emitted, some columns or all but one column may have no function ( Figures 6b, 6c and 6f ). Furthermore, the rows within a circuit carrier 30 can also be occupied differently (see FIGS. 6e and 6g ). The latter is particularly preferred if a particular light effect with respect to the appearance of the luminaire in the longitudinal direction of the support element to be generated.
- the luminaire may be brighter in the lower area and darker in the upper area, which can be achieved by the corresponding uneven arrangement of the LEDs. Also, an asymmetric distribution within the rows may be desired. Corresponding examples are in the Figures 6f and 6g specified.
- circuit carriers 30 with LEDs in different positions of the regular matrix can actually be done physically by filling only certain positions. But it is also possible that LEDs are arranged at each position of the matrix, but are switched only in different groups, wherein the circuit is preferably carried out by the control module 55. This allows different light effects to be generated at different times of the day. Furthermore, the lighting effects can be brought about not only by the switching on and off of LEDs, but also by continuous dimming of LEDs or groups of LEDs at selected positions within the circuit carrier 30.
- FIGS. 11, 12 and FIG. 13 Further embodiments of luminaire inserts according to the invention are in the FIGS. 11, 12 and FIG. 13.
- the light-deflecting elements 40 ', 40 "and 40"' in contrast to the previously described light-guiding elements 40, are formed entirely of refractive material.
- the surface structure of the light guide elements is designed to act like a lens and to achieve a comparable light control as the previously described embodiment of the light guide elements 40.
- the light directing elements of refractive material as well as the embodiments with reflective surfaces comprise a plurality of segments 41 ', 41 "and 41, respectively '', which are each assigned to a group or row of LEDs at a height on the support element. According to the embodiments according to FIGS.
- the light guide elements are formed from approximately part-cylindrical elements, which can be placed on the carrier element 20 from the outside. Some of the segments may be asymmetrical. This embodiment is preferred for lights that are different on different sides To generate light distributions. For example, it can be provided that on one side of the luminaire, the light is directed more strongly down to illuminate, for example, a mastnahen area under the lamp, while on the other side a wide-beam light distribution is generated.
- the invention is not limited to planar circuit carriers 30, as shown in the figures. It is also possible to use cylindrical or semi-cylindrical or partially cylindrical circuit carriers. Likewise, flexible circuit carriers can be applied to correspondingly cylindrical or partially cylindrical surfaces of the carrier element. Furthermore, it should be taken into account that, instead of separate circuit carriers 30, the circuit carrier, ie the conductor tracks with appropriate insulation, can also be formed directly on the surfaces of the carrier element 20.
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Description
Die vorliegende Erfindung betrifft einen LED-Leuchteneinsatz mit Lichtlenkelement zum nachträglichen Einbau in Leuchten z.B. in Außenleuchten.The present invention relates to an LED luminaire insert with light-guiding element for subsequent installation in luminaires, e.g. in outdoor lights.
Die fortschreitende Entwicklung im Bereich der LED-Technologie ermöglicht eine zunehmende Verbreitung von LEDs als Leuchtmittel in verschiedenen Bereichen der Beleuchtungstechnik. Insbesondere ermöglichen lichtstarke LEDs auch einen Einsatz im Bereich der Außenbeleuchtung, wie z.B. der Verkehrswegebeleuchtung. Diese Bereiche wurden bisher von Natriumdampf-Hochdrucklampen und Quecksilberdampf Hochdrucklampen dominiert. Diese sind jedoch oft teilweise umweltschädlich und weisen nur einen geringen Wirkungsgrad bei der Umwandlung der elektrischen Energie in Licht auf. Weiterhin sind für diese Lampen häufig aufwändige zusätzliche Optiken oder Reflektoren notwendig, um eine gewünschte Lichtverteilung zu erzeugen. Zudem sind derartige Lampen in der Regel nicht dimmbar, und die verwendeten elektrischen Vorschaltgeräte weisen einen niedrigen Wirkungsgrad auf.The progressive development in the field of LED technology enables the increasing use of LEDs as light sources in various areas of lighting technology. In particular, high brightness LEDs also allow use in outdoor lighting, e.g. the traffic route lighting. These areas have so far been dominated by high pressure sodium vapor lamps and high pressure mercury vapor lamps. However, these are often partially harmful to the environment and have only a low efficiency in the conversion of electrical energy into light. Furthermore, these lamps often require expensive additional optics or reflectors to produce a desired light distribution. In addition, such lamps are usually not dimmable, and the electrical ballasts used have a low efficiency.
Es ist daher wünschenswert, ein Beleuchtungseinheit bereitzustellen, welches eine effiziente Nutzung der elektrischen Energie ermöglicht und auf die Verwendung umweltschädlicher Materialien weitgehend verzichtet. Weiterhin ist es vorteilhaft, wenn die verwendeten Leuchtmittel dimmbar sind und das erzeugte Licht mit einfachen Mitteln in einfacher Weise lenkbar ist, um eine gewünschte Lichtverteilung zu erreichen. Obgleich alternative Beleuchtungseinrichtungen auf LED-Basis bereits bekannt sind, ist es auch aus wirtschaftlichen Gesichtspunkten häufig nicht sinnvoll, bestehende Beleuchtungsanlagen, wie z.B. Straßenbeleuchtungen, vollständig zu demontieren, um sie durch neue Beleuchtungseinrichtungen zu ersetzen.It is therefore desirable to provide a lighting unit that allows efficient use of electrical energy and largely dispenses with the use of environmentally harmful materials. Furthermore, it is advantageous if the lamps used are dimmable and the light generated is easily steered by simple means in order to achieve a desired light distribution. Although alternative LED-based lighting devices are already known, it is often not practical from an economic point of view to use existing lighting systems such as lighting systems. Street lights, completely dismantle to replace them with new lighting equipment.
Eine weitere säulenförmige Anordnung von lichtemittierenden Elementen ist in der
Aufgabe der vorliegenden Erfindung ist es daher mit möglichst geringem Aufwand vorhandene Leuchten, wie sie insbesondere im Bereich der Außenbeleuchtung anzutreffen sind, im Hinblick auf die effizientere Nutzung von Energie zu verbessern.Object of the present invention is therefore with the least possible effort existing luminaires, as they are found in particular in the field of outdoor lighting, with a view to the more efficient use of energy to improve.
Die Erfindung löst die Aufgabe durch einen Leuchteneinsatz gemäß Anspruch 1. Die natürliche Zahl n ist insbesondere 2,3,4,5 oder 6.The invention achieves the object by a luminaire insert according to
In einer Ausführungsform umfasst der Leuchteneinsatz ferner ein Strukturelement, das mit dem Trägerelement verbunden ist und zur Abstützung des Trägerelements in dem Leuchtengehäuse dient,
wenigstens ein elektrisches Betriebsgerät (50) zur elektrischen Versorgung von LEDs und eine Vielzahl von LEDs, die auf wenigstens einem der Schaltungsträger angeordnet sind. Auf dem wenigstens einen Schaltungsträger sind LEDs, worunter auch OLEDs zu verstehen sind, angeordnet. Ferner können auf den Schaltungsträgern ein oder mehrere weitere elektrische Bauelemente angeordnet sein. Insbesondere können in einer Ausführungsform die Schaltungsträger einen Sensor, insbesondere einen Temperatursensor, beispielsweise einen temperaturabhängigen Widerstand aufweisen. Des Weiteren kann der Schaltungsträger in einer Ausführungsform eine Schaltung zur Stromregelung aufweisen. Ferner können auf den Schaltungsträgern Leiterbahnen angeordnet sein, welche die LEDs und/oder elektrischen Bauelemente kontaktieren.In one embodiment, the luminaire insert further comprises a structural element, which is connected to the carrier element and serves to support the carrier element in the luminaire housing,
at least one electrical operating device (50) for the electrical supply of LEDs and a plurality of LEDs, which are arranged on at least one of the circuit carriers. On the at least one circuit carrier LEDs, including OLEDs are to be understood, arranged. Furthermore, one or more further electrical components can be arranged on the circuit carriers. In particular, in one embodiment, the circuit carriers can have a sensor, in particular a temperature sensor, for example a temperature-dependent resistor. Furthermore, in one embodiment, the circuit carrier can have a current regulation circuit. Furthermore, conductor tracks may be arranged on the circuit carriers, which contact the LEDs and / or electrical components.
In einer Ausführungsform kann der Schaltungsträger eine zylindrische Form aufweisen, auf deren äußerer Oberfläche die LEDs angeordnet sind. Auf diese Weise lässt sich eine Anordnung erzielen, bei der die LEDs in unterschiedliche Raumrichtungen abstrahlen können. Die Anordnung der LEDs beeinflusst dabei die Gesamtlichtverteilung der Leuchte.In one embodiment, the circuit carrier may have a cylindrical shape, on the outer surface of which the LEDs are arranged. In this way, an arrangement can be achieved in which the LEDs can radiate in different spatial directions. The arrangement of the LEDs affects the overall light distribution of the lamp.
In einer weiteren Ausführungsform können Schaltungsträger verwendet werden, welche eine im Wesentlichen ebene Oberfläche besitzen. Dabei können mehrere Schaltungsträger so zusammengesetzt sein, dass jeweils benachbarte Schaltungsträger an einer Kante ausgerichtet sind. Bei Verwendung von n Schaltungsträgern kann sich insbesondere im Querschnitt der Anordnung ein n-Eck ergeben, wobei die LEDs auf der Außenseite des n-Ecks angeordnet sind. Eine solche ebene Ausführung der Schaltungsträger bietet den Vorteil, dass die LEDs mit Hilfe von Verfahren, wie sie bei der Bereitstellung von ebenen LED-Modulen bekannt sind, angebracht werden können. Gemäß einer Ausführungsform bildet die Anordnung aus Schaltungsträgern ein gleichmäßiges n-Eck, z.B. ein gleichmäßiges Sechseck. Bei einem Mehreck von wenigstens fünf Ecken kann eine verhältnismäßig gleichmäßige Lichtverteilung um 360° des Leuchteneinsatzes erzielt werden. Auch die Aufbringung von Leiterbahnen und die Bestückung mit weiteren elektrischen Bauelementen z.B. Sensoren, wird durch die Verwendung von Schaltungsträgern mit ebener Oberfläche erleichtert. Um eine Lichtverteilung bereitzustellen, wie sie insbesondere im Bereich der Verkehrswegebeleuchtung zweckdienlich ist, und um andererseits die Anzahl der Schaltungsträger in wirtschaftlichen Grenzen zu halten, bietet sich insbesondere die Verwendung von fünf oder sechs Schaltungsträgern an. Eine höhere Anzahl kann insbesondere eine feinere Winkelverteilung des abgestrahlten Lichts ermöglichen, bedingt aber andererseits einen höheren Montageaufwand.In a further embodiment, circuit carriers may be used which have a substantially planar surface. In this case, a plurality of circuit carriers may be composed such that respective adjacent circuit carriers are aligned at one edge. When n circuit carriers are used, an n- corner may result, in particular in the cross section of the arrangement, the LEDs being arranged on the outside of the n- corner. Such a planar design of the circuit carriers offers the advantage that the LEDs can be mounted by means of methods known in the provision of planar LED modules. According to one embodiment, the arrangement of circuit carriers forms a uniform n- corner, for example a uniform hexagon. At a polygon of at least five corners, a relatively uniform light distribution can be achieved by 360 ° of the luminaire insert. The application of printed conductors and the assembly of other electrical components such as sensors, is facilitated by the use of circuit boards with a flat surface. In order to provide a light distribution, as is particularly useful in the field of traffic route lighting, and on the other hand, to keep the number of circuit carriers within economic limits, in particular, the use of five or six circuit carriers offers. In particular, a higher number may allow a finer angular distribution of the radiated light, but on the other hand requires a higher assembly outlay.
Der Schaltungsträger kann insbesondere als Printed Circuit Board (PCB) ausgeführt sein. Ferner kann er zur Verbesserung der Wärmeableitung als Leiterplatte mit Metallkern (MCPCB) ausgeführt sein. In einer weiteren Ausführungsform kann der Schaltungsträger einen metallischen Kern aufweisen, welcher auf seiner Oberfläche mit einem Dielektrium versehen ist. Insbesondere können auf dem Dielektrikum Leiterbahnen angeordnet sein. Bevorzugt ist hierbei die Verwendung eines metallischen Kerns aus Aluminium.The circuit carrier can be designed in particular as a printed circuit board (PCB). Further, it may be designed to improve heat dissipation as a metal core printed circuit board (MCPCB). In a further embodiment, the circuit carrier may have a metallic core, which is provided on its surface with a dielectric. In particular, conductor tracks can be arranged on the dielectric. Preferred here is the use of a metallic core of aluminum.
Alternativ können Oberflächenabschnitte des Trägerelements selbst als Schaltungsträger ausgebildet sein. Gemäß einer Ausführungsform sind metallische Leiterbahnen auf der Oberfläche des Trägerelements oder einer elektrischen Isolierschicht der Oberfläche des Trägerelements angebracht.Alternatively, surface portions of the carrier element itself may be formed as a circuit carrier. According to one embodiment, metallic conductor tracks are mounted on the surface of the carrier element or an electrical insulating layer of the surface of the carrier element.
Der Schaltungsträger kann eine Matrix aus Spalten und Zeilen aufweisen, in welcher die LEDs positioniert sind. Insbesondere kann die Matrix gleichmäßig sein z.B. in vertikaler und/oder horizontaler Richtung gleiche Abstände aufweisen. Um bei gegebener Matrix die Verteilungsdichte der LEDs variieren zu können, ist es in einer Ausführungsform möglich, die LED an einer Position der Matrix mit einer elektrischen Brücke zu aktivieren oder zu deaktivieren. Der Schaltungsträger kann in dieser Ausführungsform ein gleichmäßige Anordnung von Spalten und Reihen möglicher LED-Anschluss-Postionen aufweisen, während die LEDs gleichmäßig oder ungleichmäßig darauf verteilt sein können. In einer Ausführungsform können auch mögliche LED-Anschluss-Positionen, die nicht mit LEDs besetzt sind, mit einer elektrischen Brücke kurzgeschlossen werden, weil eine Reihenschaltung der ELDs bzw. der LED-Positionen vorgesehen ist.The circuit carrier may have a matrix of columns and rows in which the LEDs are positioned. In particular, the matrix may be uniform, for example in vertical and / or horizontal direction have equal distances. In order to be able to vary the distribution density of the LEDs for a given matrix, it is possible in one embodiment to activate or deactivate the LED at a position of the matrix with an electrical bridge. The circuit carrier may in this embodiment have a uniform arrangement of columns and rows of possible LED connection positions, while the LEDs may be evenly or non-uniformly distributed thereon. In one embodiment, possible LED connection positions that are not occupied by LEDs can also be short-circuited with an electrical bridge because a series connection of the ELDs or the LED positions is provided.
In einer Ausführungsform können die LEDs so angeordnet sein, dass sie einzeln von außen kontaktierbar sind und individuell angesteuert werden können. Ferner kann in einigen Ausführungsformen der Schaltungsträger äußere Anschlüsse aufweisen, die insbesondere zur Versorgung mit elektrischer Energie dienen. Bevorzugt können diese als Steckverbindung ausgeführt sein. Insbesondere ist bei der Verwendung mehrerer Schaltungsträger in einem Leuchteneinsatz eine Anordnung der Stecker vorteilhaft, bei welcher eine Parallel- oder Serienschaltung der einzelnen Schaltungsträger möglich ist, bei welcher sich die Mittel zur Verbindung nicht überkreuzen. Ferner kann in einer Ausführungsform der Schaltungsträger mit einer Schutzbeschichtung versehen sein, welche dem Schutz vor Feuchtigkeit dient. Die Beschichtung kann dabei als transparente Lackierung oder Beschichtung ausgeführt sein.In one embodiment, the LEDs can be arranged so that they are individually contactable from the outside and can be controlled individually. Further, in some embodiments, the circuit carrier may include external terminals that are particularly for electrical energy supply. Preferably, these can be designed as a plug connection. In particular, when using a plurality of circuit carriers in a luminaire insert, an arrangement of the plug is advantageous in which a parallel or series connection of the individual circuit carrier is possible, in which the means for connection do not cross. Furthermore, in one embodiment, the circuit carrier may be provided with a protective coating which serves to protect against moisture. The coating can be designed as a transparent coating or coating.
In einer Ausführungsform kann das Trägerelement im Querschnitt senkrecht zu seiner Längsachse ein äußeres Profil aufweisen, welches dem Querschnitt der Anordnung der Schaltungsträger entspricht oder wenigstens ähnelt. Insbesondere kann das Trägerelement einen n-eckigen Querschnitt aufweisen. In einer Ausführungsform kann das Trägerelement ein röhrenförmiges, hohles Element sein, auf dessen äußerer Oberfläche die Schaltungsträger angeordnet sind. In dieser Ausführungsform kann das Trägerelement insbesondere Kanäle aufweisen, um die Schaltungsträger beispielsweise mittels Schrauben zu befestigen. In einer weiteren Ausführungsform kann das Trägerelement massiv ausgeführt sein. Da die Wärme, welche beim Betreiben der LEDs entsteht, im Wesentlichen von den LEDs über den Schaltungsträger zum Trägerelement fließt, und von diesem ein Wärmefluss zum Strukturelement stattfindet, ist eine Verwendung eines Materials für das Trägerelement vorteilhaft, welches eine gute Wärmeleitfähigkeit besitzt. Insbesondere kann das Trägerelement Aluminium umfassen. In weiteren Ausführungsformen kann das Trägerelement Eisen oder Kupfer umfassen.In one embodiment, the carrier element in cross-section perpendicular to its longitudinal axis have an outer profile which corresponds to the cross section of the arrangement of the circuit carrier or at least similar. In particular, the carrier element may have a n- angular cross-section. In one embodiment, the support member may be a tubular, hollow member, on the outer surface of which the circuit carriers are arranged. In this embodiment, the carrier element may in particular have channels in order to fasten the circuit carriers, for example by means of screws. In a further embodiment, the carrier element can be solid. Since the heat generated during the operation of the LEDs flows essentially from the LEDs via the circuit carrier to the carrier element, and from this a heat flow to the structural element takes place, a use of a material for the carrier element is advantageous, which is a good Has thermal conductivity. In particular, the support element may comprise aluminum. In further embodiments, the support member may comprise iron or copper.
Gemäß einer Ausführungsform kann wenigstens ein Schaltungsträger mittels einer Schraub- oder Klemmeinrichtung oder mittels eines Klebeverfahrens auf dem Trägerelement befestigt sein. Zur Erzeugung eines guten thermischen Kontaktes kann ein sich bildender Hohlraum zwischen dem Schaltungsträger und dem Trägerelement mit einem thermisch leitfähigen Material (z.B. einer Wärmeleitpaste) ausgefüllt sein.According to one embodiment, at least one circuit carrier can be fastened on the carrier element by means of a screwing or clamping device or by means of an adhesive method. To create a good thermal contact, a forming cavity between the circuit carrier and the carrier element may be filled with a thermally conductive material (e.g., a thermal grease).
Die Erfindung sieht weiterhin ein Strukturelement vor. Dieses dient der mechanischen Stabilität und der Befestigung anderer Komponenten desLeuchteneinsatzes, insbesondere des Trägerelements, in dem Leuchtengehäuse. Bevorzugt ist hierbei die Verwendung eines metallischen Materials. In einer Ausführungsform kann dabei das Strukturelement aus Aluminium gefertigt sein. Durch die hohe Wärmeleitfähigkeit von Aluminium wird hierdurch eine effiziente Ableitung der in den LEDs entstehenden Wärme ermöglicht. Ferner kann das Strukturelement mit Außenflächen versehen sein, über welche die Wärmeenergie an die Luft abgegeben werden kann. Weiterhin ist Aluminium ein Material mit relativ geringer Dichte, wodurch das Gesamtgewicht des Aufbaus minimiert wird. Das Strukturelement kann ferner ein Gussteil sein oder eine Konstruktion aus Blechen aufweisen.The invention further provides a structural element. This serves for the mechanical stability and the attachment of other components of the lighting insert, in particular the carrier element, in the luminaire housing. Preference is given here to the use of a metallic material. In one embodiment, the structural element may be made of aluminum. Due to the high thermal conductivity of aluminum, this allows an efficient dissipation of the heat generated in the LEDs. Furthermore, the structural element can be provided with outer surfaces, via which the heat energy can be released into the air. Furthermore, aluminum is a relatively low density material which minimizes the overall weight of the structure. The structural element may also be a casting or have a construction of sheets.
Zum einfachen nachträglichen Einbau des Leuchteneinsatzes ist das Strukturelement ferner mit einem Befestigungsmittel versehen, um den Leuchteneinsatz an der Leuchte zu befestigen. Insbesondere kann das Strukturelement ein Gewinde aufweisen. In weiteren Ausführungsformen können andere Befestigungsmittel, wie insbesondere Mittel für eine Rastverbindung vorgesehen sein.For easy retrofitting of the lamp insert, the structural element is further provided with a fastening means to secure the lamp insert to the lamp. In particular, the structural element may have a thread. In other embodiments, other fastening means, such as in particular means may be provided for a latching connection.
In einigen Ausführungsformen kann auch das Trägerelement ferner Befestigungsmittel für ein Bauteil der zu sanierenden Leuchte, z.B. für einen Leuchtenschirm oder Leuchtendeckel aufweisen. Insbesondere kann für die Verwendung in Pilzleuchten ein Befestigungsmittel, wie ein Gewindezapfen, am Trägerelement vorgesehen sein, um ein Dachelement des Leuchtengehäuses zu befestigen.In some embodiments, the carrier element can also comprise fastening means for a component of the luminaire to be renovated, for example for a lampshade or luminous lid. In particular, a fastener, such as a threaded pin, may be provided on the support member for use in mushroom lights to secure a roof member of the lamp housing.
Ferner kann der Leuchteneinsatz ein oder mehrere Abdeckelemente aufweisen. Diese dienen insbesondere dazu, Teilbereiche des Leuchteneinsatzes abzudecken, welche nicht mit LEDs oder Reflektoren versehen sind. Die Abdeckelemente können aus einem metallischen Material, insbesondere Aluminium gefertigt sein. Neben einem dekorativen Nutzen können die Abdeckelemente auch zur Kühlung der Leuchte beitragen. Insbesondere können Öffnungen zur Belüftung vorgesehen sein. Ferner können die Abdeckelemente Oberflächenbereiche aufweisen, welche zur Abgabe von Verlustwärme an die umgebende Luft beitragen. In einer weiteren Ausführungsform kann das Abdeckelement einstückig am Strukturelement gebildet sein. Ferner kann das Abdeckelement eine Öffnung oder Aussparung aufweisen, durch welche ein elektrischer Anschluss der Leuchte erfolgt. Die Öffnung bzw. Aussparung kann darüber hinaus einen Deckel aufweisen, welcher am Abdeckelement befestigt ist.Furthermore, the luminaire insert can have one or more cover elements. These serve in particular to cover portions of the luminaire insert, which are not provided with LEDs or reflectors. The cover elements can be made of a metallic material, in particular aluminum. In addition to a decorative benefit, the cover can also contribute to the cooling of the lamp. In particular, openings may be provided for ventilation. Furthermore, the cover elements may have surface areas which contribute to the release of heat loss to the surrounding air. In a further embodiment, the cover element may be formed in one piece on the structural element. Furthermore, the cover may have an opening or recess through which an electrical connection of the lamp takes place. The opening or recess may also have a lid which is fixed to the cover.
Das wenigstens eine Betriebsgerät des Leuchteneinsatzes dient zur elektrischen Versorgung der LEDs. Das Betriebsgerät kann dabei neben leistungselektronischen Komponenten auch eine Logik enthalten. Insbesondere kann das Betriebsgerät auch ein Steuermodul (z.B. einen Siteco Light Control (SLC) Baustein) aufweisen. Hierdurch ergibt sich insbesondere der Vorteil, alle LEDs gemeinsam oder einzelne LEDs individuell zu regeln und ein Beleuchtungsszenario bedarfsgerecht programmieren zu können. Auf diese Weise kann z.B. eine Überbeleuchtung vermieden werden und ein Energieverbrauch reduziert werden. Insbesondere ergibt sich durch die Verwendung eines Steuermoduls die Möglichkeit, das Beleuchtungsniveau den tatsächlichen Erfordernissen anzupassen. Dies bietet insbesondere im Hinblick auf die Verwendung des Leuchteneinsatzes in der Verkehrswegebeleuchtung Vorteile. Beispielsweise kann durch eine bedarfsgerechte Regelung der Straßenbeleuchtung das Beleuchtungsniveau an Unfallstellen oder bei ungünstigen Witterungsbedingungen erhöht werden, wodurch eine Unfällgefahr reduziert werden kann.The at least one operating device of the luminaire insert is used for the electrical supply of the LEDs. In addition to power electronic components, the operating device may also contain logic. In particular, the operating device may also include a control module (e.g., a Siteco Light Control (SLC) device). This results in particular in the advantage of being able to regulate all LEDs individually or individual LEDs individually and to be able to program a lighting scenario as required. In this way, e.g. Overlighting can be avoided and energy consumption reduced. In particular, the use of a control module makes it possible to adapt the lighting level to the actual requirements. This offers advantages, in particular with regard to the use of the luminaire insert in traffic route lighting. For example, the lighting level at accident sites or in unfavorable weather conditions can be increased by an appropriate regulation of the street lighting, whereby a risk of accidents can be reduced.
Ferner kann in einer Ausführungsform das Betriebsgerät einen elektrischen Wandler umfassen. Dieser dient zur Wandlung der von außen bereitgestellten elektrischen Energie in eine Spannung, welche zum Betrieb der LEDs benötigt wird. Insbesondere kann der elektrische Wandler als Abwärtswandler ausgeführt sein, welcher eine von außen bereitgestellte höhere Spannung in eine zum Betrieb der LEDs geeignete niedrigere Spannung umwandelt.Further, in one embodiment, the operating device may include an electrical converter. This serves to convert the electrical energy provided from the outside into a voltage which is required for the operation of the LEDs. In particular, the electrical converter can be designed as a down converter, which converts a higher voltage provided from the outside into a lower voltage suitable for operating the LEDs.
Gemäß einer Ausführungsform weist der Leuchteneinsatz weiterhin Lichtlenkelemente auf, welche vor den LEDs in deren Abstrahlrichtung angeordnet sind. Die Lichtlenkelemente können ferner insbesondere einen transparenten oder opalen Kunststoff, z.B. PMMA, aufweisen. Möglich ist insbesondere die Verwendung von Kunststoffspritzgussteilen.According to one embodiment, the lamp insert further comprises light-guiding elements, which are arranged in front of the LEDs in the emission direction. In particular, the light directing elements may comprise a transparent or opal plastic, e.g. PMMA. In particular, the use of plastic injection-molded parts is possible.
Ferner können die Lichtlenkelemente eine reflektierende oder teilreflektierende Oberflächenbeschichtung aufweisen. Die Beschichtung kann dabei insbesondere die Materialien Aluminium, Silber oder Gold umfassen. Möglich ist hierbei insbesondere ein Aufbringen des Materials mit Hilfe eines Vakuummetallisierungsverfahrens. In einer Ausführungsform kann ein beschichteter Teilbereich der Oberfläche glatt oder mattiert ausgeführt sein. Ferner kann ein beschichteter Teilbereich der Oberfläche mit Facetten versehen sein. Zur Erzielung einer gewünschten Lichtverteilung kann das Lichtlenkelement darüber hinaus weitere eingeformte oder einsetzbare lichtbrechende oder lichtstreuende Elemente aufweisen, wie z.B. eine Fresnell-Linse, ein Prisma, einen Diffusor oder eine Kombination dieser Elemente.Furthermore, the light-guiding elements may have a reflective or partially reflecting surface coating. The coating may in particular comprise the materials aluminum, silver or gold. In this case, it is possible in particular to apply the material by means of a vacuum metallization process. In one embodiment, a coated portion of the surface may be smooth or frosted. Furthermore, a coated partial area of the surface can be provided with facets. In addition, to achieve a desired light distribution, the light-directing element may comprise further molded or insertable refractive or light-diffusing elements, e.g. a Fresnel lens, a prism, a diffuser or a combination of these elements.
In einer Ausführungsform ist das Lichtlenkelement in mehreren Segmenten ausgeführt, welche jeweils Mittel zur mechanischen Verbindung der Segmente untereinander aufweisen. Die Mittel können dabei einstückig aus dem Material der Lichtlenkeinheit gebildet sein oder als separate Elemente an diesen angebracht sein. Die Verbindungselemente können dabei so gebildet sein, dass einzelne Segmente sowohl in horizontaler als auch in vertikaler Richtung miteinander verbunden werden können. Durch eine Anordnung unterschiedlicher Segmente in vertikaler Richtung, d.h. einer Stapelung der Segmente übereinander, kann dabei insbesondere die Lichtverteilung in radialer Richtung relativ zur Leuchte beeinflusst werden. Durch eine Verbindung verschiedener Segmente in horizontaler Richtung kann ferner die Lichtverteilung in ringförmigen Bereichen, welche konzentrisch um die Leuchte herum verlaufen, beeinflusst werden. Um die Lichtverteilung für einen gewünschten Anwendungszweck zu optimieren, können die einzelnen Segmente unterschiedlich ausgeführt sein. Insbesondere können verschiedene Segmente unterschiedliche Abmessungen in horizontaler und vertikaler Richtung aufweisen.In one embodiment, the light-guiding element is embodied in a plurality of segments which each have means for the mechanical connection of the segments to one another. The means may be integrally formed from the material of the light guide unit or attached as separate elements to this. The connecting elements can be formed so that individual segments can be connected to each other both in the horizontal and in the vertical direction. By arranging different segments in the vertical direction, i. stacking of the segments one above the other, in particular the light distribution in the radial direction relative to the luminaire can be influenced. By connecting different segments in the horizontal direction, the light distribution in annular areas, which extend concentrically around the luminaire, can furthermore be influenced. In order to optimize the light distribution for a desired application, the individual segments can be designed differently. In particular, different segments may have different dimensions in the horizontal and vertical directions.
In einer Ausführungsformumfasst das Lichtlenkelement Reflektorflächen, um das von den LEDs ausgesandte Licht reflektieren. Durch eine optimierte Anordnung bzw. Ausrichtung der Reflektoren lässt sich hierbei die gewünschte Lichtverteilung einstellen. Insbesondere können Teilbereiche der Reflektoren Licht von einer LED-Gruppe, die z.B. in einer Reihe angeordnet, in einem leuchtennahen Bereich (in einem Umkreis von 10 m zur Leuchte) lenken, während andere Teilbereiche der Reflektoren das Licht der gleichen LED oder LED-Gruppe in einem leuchtenentfernteren Bereich lenken. Insbesondere können jeweils zwei Teilbereiche der Reflektoren, die Licht in den Nah- bzw. Fernbereich der Leuchte lenken, übereinander liegen, z.B. innerhalb eines Segmentes des Lichtlenkelements.In an embodiment, the light guide member includes reflector surfaces to reflect the light emitted by the LEDs. By optimizing the arrangement or alignment of the reflectors, the desired light distribution can be adjusted. In particular, you can Subregions of the reflectors direct light from an LED group arranged eg in a row in a light-near area (within a radius of 10 m to the luminaire), while other subregions of the reflectors emit the light of the same LED or LED group in a more luminous Steer area. In particular, two partial regions of the reflectors, which direct light into the near or far region of the luminaire, can lie one above the other, for example within a segment of the light-directing element.
Gemäß einer bevorzugten Ausführungsform bildet das Lichtlenkelement mehrere Fächer, die jeweils zwei gegenüberliegende oder vier etwa kastenförmig angeordnete Reflektorflächen umfasst. Vorzugsweise sind die Reflektorflächen, welche quer zur Längsachse des Trägerelements angeordnet sind, gegenüber der Längsachse des Trägerelements geneigt. Dadurch lässt sich mit einer nach unten weisenden Reflektorfläche die Lichtstrahlung der LED in den leuchtennahen Bereich umlenken, während die nach oben weisende Reflektorfläche das Licht der LED in den leuchtenentfernten Bereich umlenkt.According to a preferred embodiment, the light-guiding element forms a plurality of compartments, each comprising two opposite or four approximately box-shaped arranged reflector surfaces. Preferably, the reflector surfaces which are arranged transversely to the longitudinal axis of the carrier element, inclined relative to the longitudinal axis of the carrier element. As a result, with a reflector surface pointing downwards, the light radiation of the LED can be deflected into the region close to the light, while the reflector surface facing upwards deflects the light of the LED into the region away from the light.
Gemäß einer Ausführungsform sind die Fächer aus den Segmenten des Lichtlenkelements aufgebaut. Jeweils ein Segment kann dabei die obere Hälfte und die untere Hälfte zweier benachbarter Fächer umfassen. Es ist auch vorgesehen, dass ein Segment des Lichtlenkelements ein oder mehrere vollständige Fächer, die jeweils aus zwei oder vier Reflektorflächen gebildet sind, umfasst.According to one embodiment, the compartments are constructed of the segments of the light-guiding element. One segment in each case can comprise the upper half and the lower half of two adjacent compartments. It is also envisaged that a segment of the light-guiding element comprises one or more complete compartments, each formed by two or four reflector surfaces.
Gemäß einer bevorzugten Ausführungsform umfassen die Segmente jeweils wenigstens zwei Reflektorflächen. Wenigstens einige der Segmente des Lichtlenkelements können eine identische Form aufweisen.According to a preferred embodiment, the segments each comprise at least two reflector surfaces. At least some of the segments of the light guide element may have an identical shape.
In einer weiteren Ausführungsform können Teile des Lichtlenkelements mit Hilfe einer Tragstruktur miteinander verbunden sein. Die Verwendung einer separaten Tragstruktur kann insbesondere die mechanische Stabilität des Aufbaus erhöhen. Ferner wird hierdurch die Verwendung verschiedener Teile des Lichtlenkelements erleichtert, beispielsweise für eine Kombination von Segmenten mit verschiedenen Abmessungen. Die Tragstruktur selbst kann dabei aus einem transparenten, opalen Material ausgeführt sein. Insbesondere kann die Tragstruktur aus Kunststoff gefertigt sein. Alternativ oder zusätzlich kann die Tragstruktur auch metallische Elemente aufweisen.In a further embodiment, parts of the light-guiding element can be connected to one another with the aid of a supporting structure. The use of a separate support structure can in particular increase the mechanical stability of the structure. Furthermore, this facilitates the use of different parts of the light-guiding element, for example for a combination of segments of different dimensions. The support structure itself can be made of a transparent, opal material. In particular, the support structure be made of plastic. Alternatively or additionally, the support structure may also comprise metallic elements.
Gemäß einer weiteren Ausführungsfrom kann die Tragstruktur von außen sichtbar sein. Insbesondere kann in einer Ausführungsform ein Teilbereich der Tragstruktur als Lichtleiter ausgebildet sein, wodurch sich das Erscheinungsbild der Leuchte gezielt beeinflussen lässt. Insbesondere kann die Tragstruktur weiterhin mit fluoreszierenden oder lichtstreuenden Partikeln versehen sein, welche Teilbereiche der Tragstruktur als leuchtendes Rahmenwerk erscheinen lassen.According to another embodiment, the support structure may be visible from outside. In particular, in one embodiment, a portion of the support structure may be formed as a light guide, whereby the appearance of the lamp can be selectively influenced. In particular, the support structure may further be provided with fluorescent or light-scattering particles, which make portions of the support structure appear as a luminous framework.
Die Lichtverteilung der Leuchte wird in einer Ausführungsform insbesondere durch die Anordnung der einzelnen LEDs auf dem Schaltungsträger, der Anordnung der Schaltungsträger in der Leuchte, sowie die Anordnung und Gestaltung der Lichtlenkelemente beeinflusst. Beispielsweise lässt sich durch eine erhöhte Bestückungsdichte mit LEDs in einem Winkelbereich des LED-Moduls eine Beleuchtungsstärke intensivieren. Eine solche Ausgestaltung kann vorteilhaft sein, um in einer Anwendung zur Straßenbeleuchtung Teilbereiche der Straße gezielt stärker zu beleuchten, und andererseits Teilbereiche, welche abseits der Straße gelegen sind, weniger stark zu beleuchten.In one embodiment, the light distribution of the luminaire is influenced, in particular, by the arrangement of the individual LEDs on the circuit carrier, the arrangement of the circuit carriers in the luminaire, and the arrangement and design of the light-deflecting elements. For example, an illumination intensity can be intensified by an increased population density with LEDs in an angular range of the LED module. Such an embodiment may be advantageous in order to better illuminate portions of the street in an application for street lighting, and on the other hand to illuminate portions which are located off the street less strongly.
Der erfindungsgemäße Leuchteneinsatz kann im Bereich der Innenraum- und Außenbeleuchtung verwendet werden. Vorteilhaft ist insbesondere die Verwendung im Bereich der Außenbeleuchtung, z.B. im Bereich der Verkehrswegebeleuchtung oder zur Beleuchtung von Parkanlagen oder Plätzen. Durch die Austauschbarkeit des Leuchteneinsatzes kann dieser in verschiedenen Leuchtenfamilien eingesetzt werden. Möglich ist eine Verwendung z.B. in Pilzleuchten, Mastleuchten, Laternen oder Glockenleuchten. Der Leuchteneinsatz kann dabei so gestaltet sein, dass er den mechanischen Anforderungen der einzelnen Leuchtenfamilien gerecht wird. Beispielsweise kann der Leuchteneinsatz für die Verwendung in einer Glockenleuchte so gestaltet sein, dass er in einer hängenden Position montiert werden kann.The luminaire insert according to the invention can be used in the field of indoor and outdoor lighting. Particularly advantageous is the use in the field of outdoor lighting, e.g. in the area of traffic route lighting or to illuminate parks or squares. Due to the interchangeability of the luminaire insert this can be used in different luminaire families. It is possible to use e.g. in mushroom lights, pole lights, lanterns or bell lights. The luminaire insert can be designed so that it meets the mechanical requirements of the individual luminaire families. For example, the luminaire insert for use in a bell light can be designed so that it can be mounted in a hanging position.
Gemäß einer Ausführungsform können die LEDs auf den Schaltungsträgern so angeordnet sein, dass die Lichtverteilung im Wesentlichen in zwei Richtungen konzentriert ist. Hierzu sind die LEDs so ausgerichtet, dass ihre Abstrahlrichtung eine horizontale Projektion aufweist, welche einen Winkel von etwa 90° bis etwa 180°, insbesondere etwa 100° bis etwa 160°, z.B. etwa 120° einschließt. Eine solche Lichtverteilung ist insbesondere vorteilhaft für die Anwendung als Anliegerstraßenbeleuchtung, weil das Licht der Leuchte, die am Rand der Straße angeordnet ist, entlang der Straße oder des Gehweges neben der Straße abgegeben wird, jedoch nicht in Richtung zur Häuserfassade.According to an embodiment, the LEDs may be arranged on the circuit carriers so that the light distribution is concentrated substantially in two directions. For this purpose, the LEDs are aligned so that their emission direction has a horizontal projection, which includes an angle of about 90 ° to about 180 °, in particular about 100 ° to about 160 °, for example about 120 °. Such a light distribution is particularly advantageous for use as a residential street lighting, because the light of the lamp, which is located at the edge of the road, is discharged along the street or sidewalk next to the road, but not towards the house facade.
Gemäß einer weiteren Ausführungsform kann die Lichtverteilung in einer horizontalen Ebene annähernd isotrop sein. Dies kann insbesondere durch eine Anordnung der LEDs und der Lichtlenkelemente erfolgen, welche in einer horizontalen Schnittebene annähernd radialsymmetrisch ist. Insbesondere können die in einer Ausführungsform verwendeten Schaltungsträger gleiche Abmessungen und gleiche LED-Verteilungen aufweisen, und zueinander auf eine Weise angeordnet sein, so dass sie in einem horizontalen Querschnitt ein regelmäßiges n-Eck bilden. Vorteilhaft ist eine derartige Lichtverteilung insbesondere für eine Platzbeleuchtung.According to another embodiment, the light distribution in a horizontal plane may be approximately isotropic. This can be done in particular by an arrangement of the LEDs and the light-guiding elements, which is approximately radially symmetrical in a horizontal sectional plane. In particular, the circuit carriers used in one embodiment may have the same dimensions and the same LED distributions, and be arranged to each other in a manner such that they form a regular n- corner in a horizontal cross-section. Such a light distribution is advantageous, in particular for a court lighting.
Gemäß einer Ausführungsform können zur Bestückung der Schaltungsträger LEDs mit unterschiedlicher Lichtfarbe verwendet werden. Insbesondere im Zusammenhang mit der Verwendung eines Steuermoduls können bei dieser Ausführungsform auch LEDs mit unterschiedlicher Lichtfarbe gezielt angesteuert werden. Auf diese Weise kann die Lichtfarbe der Leuchte eingestellt werden. Insbesondere können bei der Verwendung mehrerer Schaltungsträger in einem Leuchteneinsatz die Schaltungsträger unterschiedliche Verteilungen der LEDs aufweisen, so dass beispielsweise auf einem der verwendeten Schaltungsträger LEDs einer bestimmten Farbe dominieren, während ein anderer Schaltungsträger mehr LEDs einer anderen Farbe aufweist.According to one embodiment, LEDs with different light color can be used for equipping the circuit carriers. In particular, in connection with the use of a control module LEDs with different light color can be selectively controlled in this embodiment. In this way, the light color of the lamp can be adjusted. In particular, when using a plurality of circuit carriers in a luminaire insert, the circuit carriers may have different distributions of the LEDs, so that, for example, one of the circuit carriers used is dominated by LEDs of a certain color, while another circuit carrier has more LEDs of a different color.
Gemäß einer Ausführungsform kann das Beleuchtungsniveau, welches durch die Leuchte bereitgestellt wird, durch ein Dimmen einzelner LEDs bzw. LED-Gruppen erfolgen. In einer weiteren Ausführungsform kann das Beleuchtungsniveau über ein Zu- oder Abschalten einzelner LEDs oder LED-Gruppen gezielt beeinflusst werden.According to one embodiment, the level of illumination provided by the luminaire may be achieved by dimming individual LEDs or LED groups. In a further embodiment, the lighting level can be influenced in a targeted manner via an activation or deactivation of individual LEDs or LED groups.
Zur gezielten Einstellung einer bestimmten Lichtverteilung kann in einer Ausführungsform die Anzahl der LEDs, welche in einen bestimmten Raumwinkelbereich abstrahlen, variieren. Hierbei ist die Gesamtanzahl der LEDs sowie ihre maximale Leistungsabgabe maßgeblich für die Dimensionierung des Betriebsgerätes. Vorteilhaft ist hierbei insbesondere die Verwendung von etwa 5 bis etwa 200 LEDs, insbesondere 10 bis 100 LEDs, insbesondere 20 bis 50 LEDs. Die Verteilung der LEDs auf dem Schaltungsträger bzw. den Schaltungsträgern kann dabei insbesondere inhomogen sein. Hieraus ergibt sich eine Lichtverteilung der Leuchte, welche in unterschiedlichen Raumbereichen unterschiedliche Intensität zeigt.For specific adjustment of a specific light distribution, in one embodiment the number of LEDs emitting in a certain solid angle range may vary. Here, the total number of LEDs and their maximum power output is decisive for the dimensioning of the operating device. In this case, in particular, the use of about 5 to about 200 LEDs, in particular 10 to 100 LEDs, in particular 20 to 50 LEDs, is advantageous. The distribution of the LEDs on the circuit carrier or the circuit carriers can be particularly inhomogeneous. This results in a light distribution of the luminaire, which shows different intensity in different spatial areas.
Gemäß einer Ausführungsform können die LEDs auf dem Schaltungsträger in Reihen angeordnet sein. Diese Reihen können z.B. vertikal oder horizontal verlaufen. In einer horizontalen Reihe können beispielsweise 1 bis 5 LEDs nebeneinander angeordnet sein. Eine ähnliche Dimensionierung ist auch für vertikale Reihen möglich. Zur Erzielung einer besonderen Lichtverteilung ist auch eine inhomogene Verteilung möglich.According to one embodiment, the LEDs may be arranged in rows on the circuit carrier. These rows may e.g. vertically or horizontally. In a horizontal row, for example, 1 to 5 LEDs can be arranged side by side. A similar dimensioning is also possible for vertical rows. To achieve a special light distribution and an inhomogeneous distribution is possible.
Die einzelnen LEDs auf einem Schaltungsträger können gemäß einer Ausführungsfrom mit Hilfe von Leiterbahnen kontaktiert sein. Auch eine Kontaktierung mittels einer separaten Verkabelung ist möglich.The individual LEDs on a circuit carrier may, according to an embodiment, be contacted by means of conductor tracks. A contacting by means of a separate wiring is possible.
Gemäß einer Ausführungsform sind die LEDs auf dem Schaltungsträger aufgelötet. Möglich ist auch eine Befestigung mit Hilfe eines Bondingverfahrens. Diese Verfahren gewährleisten auch einen effizienten Wärmeabfluss von den LEDs in den Schaltungsträger. Ferner ist auch eine Befestigung mit Hilfe eines Klebeverfahrens möglich.According to one embodiment, the LEDs are soldered onto the circuit carrier. Also possible is a fastening by means of a bonding method. These methods also ensure efficient heat dissipation from the LEDs into the circuit carrier. Furthermore, a fastening by means of an adhesive method is possible.
Um eine effiziente Kühlung der LEDs zu ermöglichen, ist es in einer Ausführungsform vorteilhaft, wenn, für den Wärmefluss wichtige Komponenten des LED-Moduls, wie das Strukturelement, das Trägerelement und das Abdeckelement ein thermisch gut leitfähiges Material, wie z.B. Aluminium aufweisen. Ferner können das Trägerelement und/oder das Strukturelement so gefertigt sein, dass im Inneren des LED-Moduls ein Hohlraum ausgebildet ist, durch welchen Luft strömen kann. Insbesondere ist in einer Ausführungsform im Inneren des LED-Moduls ein Hohlraum ausgebildet.In order to enable efficient cooling of the LEDs, it is advantageous in one embodiment if components of the LED module which are important for the heat flow, such as the structural element, the carrier element and the cover element, have a thermally highly conductive material, such as e.g. Have aluminum. Furthermore, the carrier element and / or the structural element can be made so that inside the LED module, a cavity is formed, through which air can flow. In particular, in one embodiment, a cavity is formed in the interior of the LED module.
Ferner kann in einer Ausführungsform der Leuchteneinsatz weiterhin einen Ventilator aufweisen, welcher zur Kühlung beiträgt. Die durch den Ventilator erzeugte Luftströmung erleichtert eine thermische Konvektion, durch welche Wärme von den Komponenten der Leuchte an die Luft abgegeben werden kann. In einer Ausführungsform kann das LED-Modul ferner eine steuerbare Wärmequelle im oberen Bereich aufweisen, durch welche eine Konvektion zusätzlich stimuliert wird. Möglich ist insbesondere auch die Verwendung einer VenturiDüse.Furthermore, in one embodiment, the lamp insert may further comprise a fan, which contributes to the cooling. The air flow generated by the fan facilitates thermal convection, by which heat from the components of the Light can be released into the air. In one embodiment, the LED module may further comprise a controllable heat source in the upper region, by means of which convection is additionally stimulated. In particular, the use of a venturi nozzle is also possible.
Darüber hinaus können in einigen Ausführungsformen des Leuchteneinsatzes einige Komponenten, wie z.B. das Strukturelement oder das Trägerelement, sowie das Abdeckelement zusätzliche, oberflächenvergrößernde Merkmale aufweisen. Insbesondere können in einigen Ausführungsformen die oberflächenvergrößernden Merkmale als rippenförmig oder linsenförmig ausgebildete Oberflächenprofile vorhanden sein.In addition, in some embodiments of the luminaire insert, some components, such as e.g. the structural element or the carrier element, as well as the cover have additional, oberflächenvergrößernde features. In particular, in some embodiments, the surface enlarging features may be present as ridge-shaped or lenticular surface profiles.
Weitere Merkmale und Vorteile der vorliegenden Erfindung werden anhand einer bevorzugten Ausführungsform im Zusammenhang mit den nachfolgenden Zeichnungen erläutert, die Folgendes darstellen:
Figur 1- zeigt schematisch verschiedene Komponenten des Leuchteneinsatzes in Explosionsdarstellung.
- Figur 2
- zeigt die Anordnung der Lichtlenkeinheit an dem Leuchteneinsatz teil- weise in Explosionsansicht.
- Figur 3
- zeigt eine vollständige Lichtlenkeinheit einer Ausführungsform, wobei zwei Elemente der Lichtlenkeinheit separat dargestellt sind.
- Figuren 4a und b
- zeigen Elemente einer Lichtlenkeinheit.
- Figuren 5a und b
- zeigen einen Ausschnitt der Lichtlenkeinheit in einem vertikalen und einem horizontalen Schnitt.
- Figuren 6a bis g
- zeigen Anordnungen von LEDs auf jeweils einem Schaltungsträger.
- Figur 7
- zeigt eine Pilzleuchte mit dem Leuchteneinsatz.
- Figuren 8a und b
- zeigen eine alternative Ausführungsform eines Entblendungselements in Aufsicht und von der Seite.
- Figuren 9a und b
- zeigen eine weitere alternative Ausführungsform eines Entblendungs- elements in Aufsicht und von der Seite.
Figur 10- zeigt einen Querschnitt durch die Lichtlenkeinheit mit den Entblen- dungselementen nach
Figuren 9a und b. Figur 11- zeigt eine alternative Ausführungsform des Leuchteneinsatzes teilweise in Explosionsansicht.
- Figur 12
- zeigt eine weitere alternative Ausführungsform des Leuchteneinsatzes teilweise in Explosionsansicht.
- FIG. 1
- schematically shows various components of the lamp insert in an exploded view.
- FIG. 2
- shows the arrangement of the light guide unit on the lamp insert partially in exploded view.
- FIG. 3
- shows a complete light guide unit of an embodiment, wherein two elements of the light guide unit are shown separately.
- FIGS. 4a and b
- show elements of a Lichtlenkeinheit.
- FIGS. 5a and b
- show a section of the light guide unit in a vertical and a horizontal section.
- FIGS. 6a to g
- show arrangements of LEDs on each one circuit carrier.
- FIG. 7
- shows a mushroom lamp with the light insert.
- FIGS. 8a and b
- show an alternative embodiment of a glare element in plan view and from the side.
- FIGS. 9a and b
- show a further alternative embodiment of a glare element in plan view and from the side.
- FIG. 10
- shows a cross section through the light guide unit with the Entblen- dungselementen after
FIGS. 9a and b. - FIG. 11
- shows an alternative embodiment of the lamp insert partially in exploded view.
- FIG. 12
- shows a further alternative embodiment of the lamp insert partially in exploded view.
In
Die Oberflächenabschnitte 21 des Trägerelements 20 sind jeweils etwa eben ausgebildet und definieren in einem Querschnitt senkrecht zur Längsachse des Trägerelements ein regelmäßiges Sechseck.In
The
In jedem Oberflächenabschnitt 21 ist ferner eine Nut 22 in Längsrichtung des Trägerelements 20 vorgesehen, welche dazu geeignet ist, dass Schrauben und Führungselemente in beliebiger Höhe längs der Nut 22 eingreifen können. Auf jedem Oberflächenabschnitt 21 des Trägerelements 20 ist jeweils ein Schaltungsträger 30 mittels Schrauben 31durch Löcher 32 angebracht (siehe
Das Trägerelement 20 ist aus Aluminium ausgebildet, um für eine gute Wärmeleitung zu sorgen. Es schließt nach unten ein Strukturelement 10 an, welches in dem vorliegenden Beispiel aus mehreren abgewinkelten Elementen, ebenfalls aus Aluminium, gebildet ist. Auf der dem Trägerelement 20 abgewandten Seite des Strukturelements 10 sind Abwinklungen 11 vorgesehen, mit deren Hilfe der Leuchteneinsatz in einem Gehäuse einer Leuchte in aufrechter Position befestigt werden kann. Das Strukturelement 10 ist ferner auf der Außenseite mit Abdeckungen 60 verkleidet. Diese Abdeckungen 60 sind ebenfalls aus Aluminium gebildet und Unterstützen die Kühlung des Leuchteneinsatzes durch Umgebungsluft. Innerhalb des Strukturelements 10 ist ein Betriebsgerät 50 angeordnet. Das Betriebsgerät 50 ist mittels einer elektrische Anschlussldemme 51 auf dem Strukturelement 10 an die vorhandenen elektrischen Zuleitungen in der Leuchte angeschlossen werden kann. Das Betriebsgerät 50 verfügt über einen Spannungswandler, um die Spannung der Netzversorgung auf die erforderlichen Spannungen zum Betrieb der LEDs umzuwandeln. Das Betriebsgerät 50 versorgt über Kabel (in den Figuren nicht gezeigt) die Schaltungsträger 30 mit der notwendigen Versorgungsspannung der LEDs 35, die auf dem Schaltungsträger 30 angeordnet sind.The
Optional ist noch ein Steuermodul 55 mit dem Betriebsgerät 50 verbunden. Das Steuermodul 55 ermöglicht es, die LEDs 35 auf den Schaltungsträger 30 aufgrund von vorgegebenen Steuerungsparametem, wie z.B. der Tageszeit oder aufgrund von Messsensoren an dem Leuchteneinsatz, zu schalten und zu dimmen. Insbesondere können auch einzelne Gruppen von LEDs 35 auf den Schaltungsträgern 30 unterschiedlich geschaltet oder gedimmt werden.Optionally, a
In
Auf der Oberseite des Trägerelements 20 ist ferner ein Gewindezapfen 27 vorgesehen. Dieser dient dazu, wie in
Um den Umfang des Trägerelements 20 bzw. der Schaltungsträger 30 ist ferner ein Lichtlenkelement 40 angeordnet, welches in dem gezeigten Beispiel aus mehreren übereinander gestapelten Segmenten 41 gebildet ist. Die
Wie in der
Bezug nehmend auf
Die lichttechnische Funktion der einzelnen Segmente 41 des Lichtlenkelements 40 ist in den
Die Segmente 41 weisen in horizontaler Richtung übereinander unterschiedlich geneigte Reflexionsflächen 401 und 402 auf. Die Reflektorfläche 402 sorgt aufgrund ihrer Anordnung oberhalb der LED 35, dass Licht gemäß dem Strahlengang 1001 nach unten reflektiert wird. Diese Strahlung trägt zur Beleuchtung im leuchtennahen Bereich (z.B. im Umfang von etwa 10 m um die Leuchte) bei. Die Strahlung 1002, welche die LED 35 ohne Reflexion an dem Lichtlenkelement 40 verlässt sowie die Strahlung 1003 und 1004, welche an der nach oben weisenden Reflexionsflächen 401 reflektiert werden, verlassen demgegenüber die Leuchte um eine horizontale Richtung. Die Lichtstrahlung trägt dadurch zur Beleuchtung der leuchtenentfemteren Bereiche bei.The
Die Lichtlenkung innerhalb einer horizontalen Ebene ist in
In Ergänzung zu den vorher genannten Reflektorflächen 401, 402 und 404 des Lichtlenkelements 40 weist dieses noch optische Entblendungselemente 420 in Form von lichtstreuenden transparenten Platten 420 auf, die sich jeweils zwischen zwei Segmenten 41 etwa parallel und in geringem Abstand zu den Schaltungsträgern 30 erstrecken. Das Entblendungselement 420 wird mittels Positionierungslöchem 403 zwischen jeweils zwei Segmenten 41 gehalten.In addition to the aforementioned reflector surfaces 401, 402 and 404 of the light-guiding
Die
Gemäß der alternativen Ausführungsform nach
Die
Alternativ kann an der Stelle des Entblendungselements 420 auch eine lichtbrechende Einrichtung, wie z.B. eine Linse, vorgesehen sein. Bei dieser Ausführungsform sind bevorzugt jeweils zwei gegenüberstehende Reflektorflächen 401 und 402 und die zwei dazwischenliegenden seitlichen Reflektorflächen 404 einstückig in einem Segment des Lichtlenkelements vorgesehen.Alternatively, at the location of the
Die übereinander gestapelten Segmente 41 des Lichtlenkelements 40 bilden daher durch ihre Reflexionsflächen 401, 402 und 404 jeweils ein Fach, welches eine LED oder eine Reihe von LEDs auf dem Schaltungsträger zugeordnet ist. Die Lichtlenkung kann durch Wahl der Winkel der Reflektorflächen 401, 402 und 404 präzise den Erfordernissen angepasst werden, weil die LED 35 als nahezu punktförmiger Strahler mit einem definierten Streuwinkel Licht abgibt. Im Unterschied zu einer flächig strahlenden Lichtquelle, wie beispielsweise einer Leuchtstoffröhre, die über den gesamten Umfang Licht abgibt, kann daher das Lichtlenkelement 40 gemäß der vorliegenden Ausführungsform sehr viel präziser auf die Anordnung der Lichtquellen abgestimmt werden.The stacked
Die Anordnung von LEDs auf den Schaltungsträgern 30 ist in für verschiedene Ausführungsformen in den
Die prinzipielle Struktur der Anordnung der LEDs auf einem Schaltungsträger 30 ist in
Die
Wie vorhergehend mit Bezug auf die Beschreibung des Lichtlenkelements 40 beschrieben, ist jeweils ein Segment 41 bzw. ein Fach, welches sich aus der Oberseite und der Unterseite zweier aufeinanderfolgender Segmente 41 ergibt, einer LED-Reihe zugeordnet. Es ist auch möglich, dass die Segmente 41 des Lichtlenkelements nicht identisch zueinander ausgeführt sind. Dann lässt sich durch die entsprechende Anordnung oder Beschaltung von LEDs auf dem Schaltungsträger eine unterschiedliche Lichtverteilung des Leuchteneinsatzes erzeugen.As previously described with reference to the description of the
Die Bestückung der Schaltungsträger 30 mit LEDs in verschiedenen Positionen der regelmäßigen Matrix kann tatsächlich physikalisch durch Besetzung nur bestimmte Positionen erfolgen. Es ist aber auch möglich, dass LEDs an jeder Position der Matrix angeordnet sind, jedoch nur in unterschiedlichen Gruppen geschaltet werden, wobei die Schaltung vorzugsweise durch das Steuermodul 55 erfolgt. So lassen sich zu unterschiedlichen Tageszeiten verschiedene Lichteffekte erzeugen. Ferner können die Lichteffekte nicht nur durch das Ein- und Ausschalten von LEDs hervorgebracht werden, sondern auch durch kontinuierliche Dimmen von LEDs oder Gruppen von LEDs an ausgewählten Positionen innerhalb der Schaltungsträger 30.The placement of the
Weitere Ausführungsformen von erfindungsgemäßen Leuchteneinsätzen sind in den
Zahlreiche Abwandlungen der vorhergehend beschriebenen Ausführungsformen können im Rahmen der Erfindung, wie sie in den Ansprüchen definiert ist, vorgenommen werden. Beispielsweise ist die Erfindung nicht auf ebene Schaltungsträger 30, wie in den Figuren dargestellt, beschränkt. Es können auch zylindrische oder halbzylindrische oder teilzylindrische Schaltungsträger Anwendung finden. Ebenso können flexible Schaltungsträger auf entsprechend zylindrisch oder teilzylindrische Flächen des Trägerelements aufgebracht werden. Ferner ist zu berücksichtigen dass anstelle separater Schaltungsträger 30 der Schaltungsträger, d.h. die Leiterbahnen mit entsprechender Isolierung, auch direkt auf den Oberflächen des Trägerelements 20 ausgebildet sein kann.Numerous modifications of the previously described embodiments may be made within the scope of the invention as defined in the claims. For example, the invention is not limited to
- 1010
- Strukturelementstructural element
- 1111
- Winkelansatzangle approach
- 2020
- Trägerelementsupport element
- 2121
- Oberflächenabschnittsurface section
- 2222
- Nutgroove
- 2727
- Gewindezapfenthreaded pin
- 3030
- Schaltungsträgercircuit support
- 3131
- Schraubescrew
- 3232
- Lochhole
- 3535
- LEDLED
- 40, 40', 40"40, 40 ', 40 "
- LichtlenkelementeLight guide elements
- 41, 41', 41"41, 41 ', 41 "
- Segment des LichtlenkelementsSegment of the light-guiding element
- 5050
- Betriebsgerätcontrol gear
- 5151
- Netzklemmepower terminal
- 5555
- Steuermodulcontrol module
- 6060
- Abdeckelementcover
- 8080
- Gehäusedachhousing roof
- 8181
- Leuchtenmastmast lights
- 8282
- Transparente AbdeckungTransparent cover
- 8383
- LeuchtengehäusesockelOptical assembly base
- 301301
- Elektrischer AnschlussElectrical connection
- 302302
- Elektrische BrückeElectric bridge
- 303303
- LED-PositionLED position
- 401401
- Reflektorflächereflector surface
- 402402
- Reflektorflächereflector surface
- 403403
- Positionslochposition hole
- 404404
- Reflektorflächereflector surface
- 405405
- Rastnaselocking lug
- 420, 420', 420"420, 420 ', 420 "
- EntblendungselementEntblendungselement
- 421', 421"421 ', 421 "
- Reihenstring
- 422', 422"422 ', 422 "
- linsenförmige Erhebungenlenticular elevations
- 423', 423"423 ', 423 "
- Vorsprüngeprojections
- 10011001
- Lichtstrahlbeam of light
- 10021002
- Lichtstrahlbeam of light
- 10031003
- Lichtstrahlbeam of light
- 10041004
- Lichtstrahlbeam of light
Claims (16)
- Light element with a light diverter, wherein the light element comprises the following:an elongate carrier element (20) which is fitted along its circumference around the longitudinal axis to take circuit carriers (30) for LEDs (35) or which has surface sections along its circumference around the longitudinal axis, which are fitted at least partially themselves as circuit carriers for LEDs, and a multiplicity of LEDs (35) which are arranged on at least one of the circuit carriers (30),and whereby the light diverter, which extends around at least part of the circumference of the carrier element (20) before the circuit carrier (30), has a plurality of segments (41, 41', 41"), wherein each segment (41, 41', 41") has at least one reflection area (401, 402) and / or a refractive section, said area or said section each being assigned to an LED or a series of LEDs which extends perpendicular to the longitudinal extension of the LEDs, characterised in that one segment encloses 1/nth of the circumference of the carrier element, whereby n is a natural number from 2.
- Light element according to claim 1, wherein the circuit carrier or carriers (30) and / or the carrier element (20) define, in a cross-section perpendicular to the longitudinal axis of the carrier element, a regular n-gon, preferably with five or more corners, or wherein the circuit carrier or carriers and / or the carrier element define a cylinder or cylinder sections along the longitudinal axis of the carrier element.
- Light element according to one of the previous claims, wherein on one or more of the circuit carriers (30) electrical components are arranged, in particular sensors for measuring the temperature, sensors for measuring the luminous emittance and / or electrical components for switching the power supply of the LEDs.
- Light element according to one of the previous claims, wherein the LEDs are arranged on the at least one circuit carrier (30) in one or more columns which extend in the longitudinal direction of the carrier element (20), and / or at least some of the LEDs are arranged in lines perpendicular to the longitudinal axis of the carrier element on the circuit carrier (30), wherein in particular at least some of the LEDs on a circuit carrier are distributed unevenly on the lines and columns of the circuit carrier (30).
- Light element according to one of the previous claims, wherein individual LEDs or groups of LEDs are electrically connected separately from each other and can be controlled individually, in particular can be switched or off and / or can be dimmed individually.
- Light element according to one of the previous claims, wherein the carrier element (20) is hollow inside.
- Light element according to one of the previous claims, wherein the carrier element (20) is made of aluminium or an aluminium alloy.
- Light element according to one of the previous claims, wherein the light diverter (40, 40', 40") extends around the entire circumference of the carrier element (20).
- Light element according to one of the previous claims, wherein the light diverter (40, 40', 40") has a plurality of repeating segments (41, 41', 41"), in particular a stacking of segments (41) in the direction of the longitudinal axis of the carrier element (20).
- Light element according to one of the previous claims, wherein the light diverter defines compartments which each have at least two reflector areas (401, 402) which are inclined against the longitudinal axis of the carrier element.
- Light element according to claim 10, wherein the segments (41) in the longitudinal direction of the carrier element are each the height of one or more of the compartments.
- Light element according to one of the previous claims, wherein the segments (41, 41', 41") can be connected to each other by means of plug-in connections.
- Light element according to one of the previous claims, wherein parts of the light diverter are connected to each other by means of a supporting structure which is made in particular of material which is transparent, opal or provided with light-diffusing elements.
- Light element according to one of the previous claims, wherein the LEDs (35) are distributed on the circuit carriers (30) or can be controlled in such a way that the light emission of the light element occurs on a plane perpendicular to the longitudinal axis of the bearing element substantially in two directions, in particular symmetrically, wherein the two directions on the plane enclose an angle of approximately 90° to approximately 180°, in particular approximately 100° to approximately 160°.
- Light element according to one of the previous claims, wherein the LEDs are distributed on the circuit carriers (30) or can be controlled such that the light distribution, generated by the light element, on a plane perpendicular to the longitudinal axis of the light carrier (20) is almost isotropic.
- Light element according to one of the previous claims, wherein a light-diffusing or refractive element (420, 420', 420") is arranged between two opposite reflector areas (401, 402) of the light diverter.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102009032408 | 2009-07-09 | ||
DE102009058310.6A DE102009058310B4 (en) | 2009-07-09 | 2009-12-15 | LED luminaire insert with light control element |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2273185A1 EP2273185A1 (en) | 2011-01-12 |
EP2273185B1 true EP2273185B1 (en) | 2013-09-18 |
Family
ID=42953785
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP10168342.3A Active EP2273185B1 (en) | 2009-07-09 | 2010-07-02 | LED light element with light diverter |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP2273185B1 (en) |
DE (1) | DE102009058310B4 (en) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106062469A (en) * | 2014-02-19 | 2016-10-26 | 飞利浦灯具控股公司 | Luminaire and lighting arrangement |
EP2957827A1 (en) | 2014-06-18 | 2015-12-23 | Hella KGaA Hueck & Co. | Optical element, in particular for a street light, and street light with an optical element |
DE102014111711A1 (en) | 2014-08-15 | 2016-02-18 | Tilo Könnecke | Control of power consumption of outdoor electrical consumers |
TWI717200B (en) * | 2020-01-22 | 2021-01-21 | 群光電子股份有限公司 | Camera and light adjustment module |
AU2020101931A4 (en) * | 2019-08-29 | 2020-10-01 | Xiamen Leedarson Lighting Co., Ltd. | Multi-angle shifting structure and linear lamp |
EP3872399A1 (en) * | 2020-02-26 | 2021-09-01 | Selux Aktiengesellschaft | Vertical lighting device and external lighting device |
DE102020134057B4 (en) | 2020-12-17 | 2022-12-08 | Siteco Gmbh | LED light, in particular street light, with a lens array |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8100552B2 (en) * | 2002-07-12 | 2012-01-24 | Yechezkal Evan Spero | Multiple light-source illuminating system |
JP2006190559A (en) * | 2005-01-06 | 2006-07-20 | Toshiaki Inoue | Solid light emitting element lamp with reflector |
US8206009B2 (en) * | 2007-09-19 | 2012-06-26 | Cooper Technologies Company | Light emitting diode lamp source |
CN101408300B (en) * | 2007-10-10 | 2011-06-08 | 富准精密工业(深圳)有限公司 | LED light fitting with heat radiation structure |
DE102008036020A1 (en) * | 2007-12-18 | 2009-06-25 | Osram Opto Semiconductors Gmbh | Opto-electronic module and lighting device |
US8109660B2 (en) * | 2008-08-07 | 2012-02-07 | Relume Technologies, Inc. | Globe deployable LED light assembly |
-
2009
- 2009-12-15 DE DE102009058310.6A patent/DE102009058310B4/en not_active Expired - Fee Related
-
2010
- 2010-07-02 EP EP10168342.3A patent/EP2273185B1/en active Active
Also Published As
Publication number | Publication date |
---|---|
DE102009058310A1 (en) | 2011-01-13 |
DE102009058310B4 (en) | 2020-11-12 |
EP2273185A1 (en) | 2011-01-12 |
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