Classifications

• • 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
  • F21V11/00—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00
  • F21V11/08—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00 using diaphragms containing one or more apertures
  • F21V11/14—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00 using diaphragms containing one or more apertures with many small apertures
• • 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
  • F21V19/00—Fastening of light sources or lamp holders
  • F21V19/001—Fastening of light sources or lamp holders the light sources being semiconductors devices, e.g. LEDs
• • 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
  • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
  • F21V29/50—Cooling arrangements
  • F21V29/70—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
• • 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
  • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
  • F21V29/50—Cooling arrangements
  • F21V29/70—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
  • F21V29/74—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F21—LIGHTING
  • F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
  • F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
• • 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
  • F21V7/0058—Reflectors for light sources adapted to cooperate with light sources of shapes different from point-like or linear, e.g. circular light sources
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F21—LIGHTING
  • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
  • F21Y2107/00—Light sources with three-dimensionally disposed light-generating elements
  • F21Y2107/10—Light sources with three-dimensionally disposed light-generating elements on concave supports or substrates, e.g. on the inner side of bowl-shaped supports
• • 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

• a light source it is indicated a light source.
• a lamp (English “luminaire”, colloquially also “lamp") specified, in which such a light source is used as a light source.
• An object to be solved is to specify a luminous means which has improved optical properties.
• the luminous means comprises a multiplicity of light-emitting diodes.
• the light-emitting diodes are suitable for emitting light during operation.
• the light-emitting diodes thus form the light-generating elements of the light source.
• the light-emitting means comprises, for example, at least three light-emitting diodes and, for example, a maximum of 48 light-emitting diodes.
• the light emitting diodes of the luminous means are arranged distributed in three dimensions. This means in particular that the light-emitting diodes of the luminous means are not arranged along a single line and not in a single common plane. Rather, the light-emitting diodes are spatially distributed in such a way that no line can be found on which all light-emitting diodes of the
• Illuminant are arranged and that no level can be found in which all LEDs of the light source are arranged.
• the arranged distributed three-dimensionally it is possible to adjust the illumination intensity distribution of the light source in different spatial directions independently. It is thus possible that the light source emits different amounts of light energy in different spatial directions.
• the luminous means comprises a diaphragm screen.
• the screen is formed of a radiopaque material, which is radiopaque, in particular for the light emitted by the LEDs.
• the light-emitting diodes facing side of the diaphragm screen may be formed radiation-absorbing or radiation-reflecting.
• the transmission is then at least 50%, for example at least 80% or at least 90%.
• the screen covers the LEDs at least in places.
• the shape of the diaphragm screen corresponds to the shape of the lateral surface of a three-dimensional hollow body.
• the screen can therefore the shape of the lateral surface of a cube, a cone, a
• the light emitting diodes are arranged in the interior of the hollow body, so that the screen - so the lateral surface of the hollow body - encloses the light emitting diodes laterally.
• the visor screen can at its top and at its bottom a cover plate or a bottom plate have, which may be radiation-transmissive, radiation-reflective or radiopaque.
• the diaphragm screen comprises a multiplicity of openings.
• the apertures are apertures in the screen in which the radiopaque material of the screen is removed.
• the openings are arranged downstream of the light emitting diodes of the light source in the emission direction. That is, during operation of the light source, light emitted by the light emitting diodes can pass through the openings.
• the light of the light-emitting diodes preferably leaves the shade screen mainly or only through the apertures of the shade shade. Where there are no openings in the screen, the light of the LEDs is absorbed by the screen, partially transmitted or reflected.
• the luminous means comprises a plurality of light-emitting diodes which are arranged distributed in three dimensions.
• the luminous means further comprises a diaphragm screen which is formed from a radiopaque or translucent material, wherein the diaphragm screen surrounds the LEDs at least in places.
• the diaphragm screen has a plurality of openings, which are arranged downstream of the LEDs in the emission direction. In this case, light emitted by the light-emitting diodes during operation of the luminous means passes through the apertures of the diaphragm screen.
• the screen can ensure that the
• LEDs and other elements of the bulb are not directly visible from outside the bulb. That is, about the light-emitting diodes, connection carrier for the Light-emitting diodes, cables for electrically contacting the light emitting diodes, optical elements and drive circuits are not visible from the outside and / or at least not visible.
• the diaphragm screen mechanically protects the enclosed elements of the luminous means, for example the light-emitting diodes, from external influences.
• the light distribution of the luminous means can be set individually in a simple manner by the targeted selection of the locations at which the apertures are introduced into the screen. For example, the screen in areas where a lot of light should escape from the bulb, a greater density of
• the number of light-emitting diodes in the areas in which more light is to be emitted may be higher than in other areas. Due to the apertures in the aperture screen, the illuminant thus has a reduced, on the An Cruisse optimized light exit surface.
• the light-emitting diodes are arranged at a distance from the diaphragm screen. That is, between the LEDs and the screen is a free space that may be filled with air, for example. That is, in other words are the LEDs are not in direct contact with the screen.
• the distance can be adjusted depending on the desired light distribution.
• the light emitting diodes can be cooled particularly well by means of convection by air inlet and air outlet in and out of the screen.
• a light-emitting diode is assigned to each aperture in the diaphragm screen.
• each breakdown is uniquely associated with a light emitting diode. That is, each LED is then associated with exactly one breakthrough through which a majority - for example, at least 40%, preferably at least 50% - of the light emitted by the LED during operation occurs. Through other openings of the screen then occurs less, preferably hardly emitted by this LED light.
• each breakthrough has a surface area of at most 3 cm 2.
• the area is at most 1.5 cm ⁇ , more preferably at most 0.5 cm ⁇ . Due to the small surface area of the aperture, the solid angle of the light passing through the aperture is reduced.
• the distance from openings adjacent to one another is at least 0.5 cm measured on the outer surface of the shield screen facing away from the light-emitting diodes.
• the distance is at least 1 cm, more preferably at least 1.5 cm. Due to the wide hole spacing, the glare effect is also minimized by the light generated by the lamp during operation. The use of a lens for Bundling the light through the aperture is possible.
• the light exit surface of the lamp can be reduced.
• the openings are formed as a circular or square opening.
• the breakthroughs can then be particularly easily generated by drilling or punching in the material of the visor screen.
• the openings are formed as openings, which have a main extension direction. That is, in comparison with openings that have no main extension direction, the openings are stretched in one direction and compressed in another direction.
• the openings may be formed, for example, as slots, rectangles or oval.
• the luminous means comprises at least one heat sink, which has at least two mounting surfaces, wherein a light-emitting diode is arranged on each mounting surface and the mounting surfaces are arranged in different planes.
• the heat sink is, for example, a metallic body.
• the heat sink has planar surfaces, which are provided as mounting surfaces for LEDs of the light source.
• connection carrier or a printed circuit board may be applied to the heat sink, which follows the shape of the heat sink in places.
• LEDs are then mounted on the circuit board and electrically connected via the circuit board.
• the mounting surfaces are arranged, for example, in different planes of the heat sink.
• the at least one heat sink has at least one side surface. It is possible that the heat sink has exactly one side surface. The side surface is then formed, for example, at least in places by the lateral surface of a ball, a cylinder, a cone or a truncated cone.
• Side surfaces for example, has three or more side surfaces.
• the side surfaces flat, so formed within the manufacturing tolerance without curvature be.
• the side surfaces may form a regular or an irregular n-corner, where n ⁇ 3.
• the heat sink may consist of the side surfaces.
• the heat sink has no bottom surface and no top surface to which the side surfaces are attached.
• the side surfaces are mechanically interconnected in this case and are not mechanically held together by a bottom surface or a top surface.
• the at least one side surface comprises the mounting surfaces of the heat sink.
• the LEDs of the illuminant are at least indirectly to the light
• each side surface may comprise exactly one mounting surface or a plurality of mounting surfaces.
• connection carrier which faces the diaphragm screen of the luminous means, is fastened to each side surface of the heat sink or each side surface comprises a connection carrier, ie is formed, for example, by a connection carrier.
• connection carrier is fixed, for example, in the region of a mounting surface on a side surface of the heat sink.
• the attachment carrier may be glued to the side surface, soldered to the side surface, or attached to the side surface by a mechanical fastener such as at least one rivet or at least one screw.
• the side surface and the connection carrier have the largest possible connection surface in which the connection carrier is in direct contact with the side surface to which it is applied.
• the connection area can amount to at least 90% of the base area of the connection carrier.
• connection carrier is, for example, a printed circuit board (English: circuit board). That is, the
• Connection carrier has a base body, in which or on the electrical connection points and conductor tracks are structured.
• the connection carrier is a printed circuit board (printed circuit board), a metal-core board or a locally metallized ceramic carrier.
• At least one light-emitting diode is mechanically fastened and electrically connected to each connection carrier.
• the light-emitting diode is mechanically fastened and electrically connected to the side facing away from the side surface of the heat sink, on which the connection carrier is fastened, on the connection carrier. That is, the light-emitting diode mounted on the connection carrier or the light-emitting diodes mounted on the connection carrier face the diaphragm screen.
• the side surfaces preferably enclose a volume through which air can flow for cooling.
• the luminous means comprises at least one heat sink which has at least one side face.
• the at least one side surface comprises the mounting surfaces of the heat sink.
• at least one connection carrier is fixed, which faces the screen, or each side surface is formed by a connection carrier and at each connection carrier is at least one light-emitting diode mechanically fixed and electrically connected.
• the at least one side surface encloses a volume in which a ballast for operating at least part of the light-emitting diodes is arranged.
• the ballast may be attached to the side facing away from the connection carrier of the at least one side surface of the heat sink.
• the lamp comprises exactly one ballast for operating all LEDs of the lamp.
• the light emitting diodes different connection carrier can be operated independently. This makes it possible to set a spatially asymmetrical light intensity distribution of the light emitted by the light source, in which, for example, the entirety of
• the ballast is, for example, an electronic ballast which provides the voltage necessary for operating the light-emitting diodes. Furthermore, the ballast further components for controlling the LEDs, such as a
• Pulse width modulation circuit include. Alternatively or additionally, it is also possible for one or more further activation devices to be present in the volume enclosed by the at least one side surface, which may comprise, for example, at least one pulse width modulation circuit, at least one microcontroller and / or at least one constant current source.
• the at least one heat sink has a bottom surface on which the at least one side surface of the heat sink is attached. That is, the bottom surface closes off the volume enclosed by the at least one side surface on one side of the heat sink.
• Side surface may have openings through which air can penetrate into the volume, so that convection through the enclosed volume is made possible.
• the bottom surface may form the element of the heat sink, which mechanically stabilizes the at least one side surface of the heat sink and, in the case of a plurality of side surfaces, interconnects one another. Furthermore, the bottom surface of the heat sink can serve as a carrier for other components of the light source as the one or more ballasts.
• the bottom surface has at least one first recess, wherein at least one side surface of the heat sink protrudes in places in the at least one first recess.
• the number of recesses in the bottom surface may correspond to the number of side surfaces. Each of the side surfaces then projects in places into the associated first recess.
• the first recess is, for example, a groove in the bottom surface on the side of the bottom surface facing the at least one side surface.
• the at least one first recess can completely penetrate the bottom surface.
• a side surface which protrudes into the recess in places can be mechanically connected to the bottom surface by means of a press fit by pressing into the recess. Furthermore, it is possible that the side surface loose in the region of the recess with the
• the bottom surface has at least one second recess, wherein the second recess is arranged on the side of the first recess facing the screen.
• the bottom surface then preferably has the same number of first and second recesses.
• the second recess is provided for receiving an optical module. That is, an optical module may protrude in places in the second recess and be secured by means of the second recess on the bottom surface or be fixed with a certain margin for adjusting the angle of inclination on the bottom surface.
• the optical module in the second recess is the side surface in the first recess in the emission direction of the Downstream LEDs, so that at least a portion of the light generated by the LEDs during operation passes through the optical module.
• the optical module may be, for example, a carrier plate on which an optical lens is provided for each light-emitting diode, which is used for
• the optical module can be a diffusion plate which is provided to diffuse the light generated by the light emitting diodes during operation in a diffuse manner. It is also possible that the optical disk is part of the screen or the screen of the lamp.
• the side surfaces are connected to one another and / or the side surfaces and the bottom surfaces in a mechanically detachable manner. That is, by applying a mechanical force, the connection between the side surfaces with each other and / or between the side surfaces and the bottom surface can be solved without destroying a component of the light source. As a result, it is possible, for example, to remove a side surface with connection carriers applied to the side surface from the light source and to replace it with a new side surface with connection carrier. A maintenance of the bulb is particularly easy in this way possible.
• the at least one side surface and the bottom surface are connected to one another via a hinge. Through the hinge it is possible that the angle, the floor surface and the
• the luminous means preferably comprises a plurality of side surfaces which are each connected to the bottom surface via a hinge, so that the emission direction of the light emitting diodes of different side surfaces can be adjusted individually, that is to say substantially independently of the remaining side surfaces.
• the cooling body is integrally formed. That is, the
• Such a heat sink can be made of a plastic, for example by means of an injection molding process or a transfer molding process. The heat sink is then injection molded or injection molded. "Injection-molded” and “injection-molded” are representational features which can be detected, for example, by residues typical for the production processes, such as burrs on the finished product. Furthermore, it is possible for the components of the heat sink to be punched or cut from a metal plate, for example a sheet metal. Also in this case, it is integrally formed heat sink.
• At least two of the side faces of the heat sink include mutually different angles with the bottom face of the heat sink.
• the heat sink does not comprise a bottom surface, at least two of the
• the light-emitting diodes arranged on the side surfaces have, for example, different emission directions in a vertical direction perpendicular to the bottom surface.
• the lighting means has an asymmetrical light intensity distribution which is not rotationally symmetrical with respect to an axis which is perpendicular to the floor surface.
• the heat sink is formed in one piece, the different inclination of the side surfaces can already be set in the manufacture of the heat sink. If the side surfaces are connected, for example by means of a hinge movable relative to the bottom surface movable with the bottom surface, an adjustment of the angle can also be made at the place of use of the light source.
• the mounting surfaces of the heat sink are through the treads of the staircase-like
• Light-emitting diodes are then arranged on the mounting surfaces in different planes. It is possible that the mounting surfaces - ie, for example, the treads of the stair-like profile - are not arranged parallel to each other contrary to a conventional staircase. Rather, it is possible that the mounting surfaces are inclined to each other, so that arranged on different mounting surfaces of the heat sink LEDs have main emission directions that are not parallel to each other.
• the luminous means comprises a cover plate which is connected to the diaphragm screen at an upper side of the diaphragm screen is.
• the luminous means comprises a bottom plate, which is connected to an upper side facing away from the top of the bottom screen of the visor screen. Cover plate and bottom plate each have at least one opening through which air can enter during operation of the luminous means.
• Breakthroughs of the screen This air in turn serves to cool the light emitting diodes of the lamp. That is, the light emitting diodes of the light source are convection cooled, with both the openings and the openings in the cover plate and the bottom plate allow air to pass through the bulb.
• the cover plate and / or bottom plate are mechanically detachably connected to the screen.
• cover plate and base plate can be connected to each other by a press fit and / or a screw connection.
• “Mechanically solvable” means here and below that the connection can be detached non-destructively by mechanical action, ie the connection can be released without destroying a component, which contributes to the fact that the illuminant is damaged, for example if one or more light-emitting diodes are damaged. can be opened in a simple manner to replace the defective elements.
• the luminous means comprises a base, which is arranged between the cover plate and the bottom plate and which is connected to the base Base plate is attached. At least one of the heat sink, are arranged on the light-emitting diodes of the lamp, is mechanically detachably connected to the base and the cover plate.
• the base thus serves to receive and attach at least one, for example, all heatsink of the bulb.
• the base can also be formed integrally with the bottom plate of the lamp.
• the heat sink is then mechanically releasably attached to the base and ceiling plate so that it can be solved destructively under mechanical force from the base and cover plate, for example, to replace the entire heat sink with the light emitting diodes arranged thereon.
• the number of light-emitting diodes of the light source can be adjusted in a simple manner via the number of heat sinks, so that the number of light-emitting diodes of the light source can be adjusted in accordance with the requirements of the light source by simple mechanical fastening or mechanical release of heat sinks.
• the luminous means comprises a plurality of heat sinks, wherein at least two light-emitting diodes are attached to each heat sink. All heatsinks are mechanically releasably attached, for example, on the base and on the cover plate - for example, screwed, verklippst or pressed. The number of heat sinks which are fastened in the luminous means allows the light distribution and the brightness of the light generated by the luminous means to be set in a simple manner.
• the emission angle of at least one of the light-emitting diodes is adjustable. This can be achieved, for example, in that the angle of inclination of the LEDs relative to Aperture screen by bending or deformation of the circuit board or the heat sink on which the light emitting diode is arranged, is set. For example, so that the
• Illuminance distribution of the light of the bulb which is directed on the ground or in the ground parallel planes, are variably adjusted.
• different light-emitting diodes of the luminous means may emit their light in different directions.
• a first group of light emitting diodes of the luminous means may be provided to illuminate a predetermined area of the floor.
• Another group of light-emitting diodes may be provided to illuminate an area remote from the ground, for example a building.
• the illuminant has an illumination intensity distribution that is direction-dependent.
• Such a light source can be used for example in a lamp.
• the lamp may be, for example, a street lamp.
• the roadway of the road can be illuminated, for example, with the light emitting diodes facing the road.
• a building can be illuminated with light-emitting diodes of the luminous means facing away from the road.
• FIG. 9 schematically shows the light intensity distribution for a luminous means described here.
• FIG. 1 shows a schematic side view of a luminaire 100 described here.
• the luminaire 100 is, for example, a street lamp.
• the luminaire 100 comprises the luminous means 1.
• the luminous means 1 In the luminous means 1, only the aperture shield 11 is visible in the side view, which has apertures 12 through which the light generated by the luminous means can emerge from the luminous means.
• the luminaire 100 comprises, in addition to the luminous means 1, for example, a cover plate 30 on which drive circuits for the luminous means 1 can be arranged.
• FIG. 2 shows a luminous means 1 described here on the basis of a schematic perspective illustration.
• the light-emitting means 1 comprises a plurality of light emitting diodes 10.
• the light emitting diodes 10 are arranged distributed in three dimensions.
• the light-emitting diodes 10 are arranged on mounting surfaces 14 of staircase-shaped heat sinks 13.
• the heat sinks 13 each extend from a base 17 of the light source 1 to the cover plate 15 of the light source 1.
• the heat sinks 13 are screwed or pressed, for example, to the base 17 and cover 15.
• the base 17 is arranged on a bottom plate 16, which closes the light source on its underside.
• a receiving device 18 is arranged, with which the lighting means can be fixed for example in the light shown in connection with the figure 1.
• the light bulb can also be hung in the lamp. That is, the lighting means may be attached to the top and / or bottom of the luminaire. Furthermore, it is possible for the illuminant to be arranged in a height-adjustable manner in the luminaire.
• the light-emitting means 1 further comprises the diaphragm screen 11.
• the diaphragm screen 11 has the shape of the lateral surface of a three-dimensional body such as a cube, a ball, a truncated cone, a cylinder stub, a cone or a cylinder.
• the diaphragm screen 11 has the shape of the lateral surface of a cylinder stub.
• the visor 11 is formed of a radiation absorbing material.
• the visor 11 may be made of a metal.
• the screen 11 is then formed, for example, of a metal sheet.
• apertures 12 are arranged, which are formed here as a circular holes.
• each light-emitting diode 10 can be arranged downstream of at least one opening 12 in the emission direction.
• the light-emitting diodes 10 are arranged at a distance from the screen 11, so that a portion of the light generated by the light-emitting diodes 10 does not strike the aperture 12, but the screen 11, where it is absorbed or reflected.
• FIG. 3A shows a schematic perspective view of a luminous means 1 described here without cover plate, base plate and diaphragm screen.
• the heat sinks 13 extend in a fan-like manner from the base 17, for example, along a circle.
• the number of heatsinks 13 which are fixed to the base 17 the number of light-emitting diodes 10 of the light source can be adjusted.
• FIGS. 3B and 3C show a schematic plan view and a schematic side view, respectively, of a heat sink 13 of the light source 1.
• the heat sink 13 has mounting surfaces 14.
• the heat sink 13 comprises a staircase-like profile, wherein the mounting surfaces 14 the Form treads of the profile.
• Different light-emitting diodes 10, which are arranged on different mounting surfaces 14, are therefore arranged in staggered planes.
• the emission direction of the LEDs 10 can be adjusted. This orientation can be adjusted, for example, by bending the fastening straps 21, by way of which the heat sink is fastened to the base 17 and to the cover plate 15.
• the light-emitting diodes 10 themselves have an emission angle range ⁇ in which they emit a large part of the light emitted by them. For example, by bending from
• the light-emitting diodes 10 can have optical elements which focus the light generated by them on the apertures 12 in the diaphragm screen, so that hardly any light impinges on the light-emitting diodes 10 associated inside of the screen and is absorbed or reflected there.
• the optical element associated with a light-emitting diode 10 may be, for example, a lens and / or a reflector. Through the openings, which form the light exit surfaces of the lamp, the desired light distribution of the light emitted by the light source is adjusted.
• FIG. 3E shows a schematic top view of the heatsink 13 fastened to the base 17. It can be seen that each heatsink 13 has a fastening tab 21, with an opening 131 which is provided for receiving, for example, a screw. In this way, the heat sink 13 can be screwed to the cover plate 15 of the lamp 1.
• FIG. 4A shows a schematic side view of a luminous means 1 with diaphragm screen 11, base plate 16 and cover plate 15 described here.
• Base plate 16 and cover plate 15 can be connected to the diaphragm screen 11 in a mechanically detachable manner.
• the heat sink 13 with the LEDs 10 are mechanically releasably attached to the base 17 and the cover plate 15, for example screwed.
• the number of LEDs per heatsink 13 and the number of heatsinks 13 determines the amount of light that can be generated by the bulb during operation.
• Through openings 151 in the bottom plate 16 see also FIG.
• air 152 can pass into the illuminant during operation of the light-emitting diodes 10, which after heating through the light-emitting diodes 10 pass through openings 151 in the cover plate 15 again the lamp 1 escapes.
• Socket 17 and cover plate 15 may be arranged a tube 20 that is mechanically detachably connected to the base 17 and the cover plate 15, for example screwed.
• the tube may be provided, for example, for receiving cables which serve to electrically connect the light-emitting diodes 10.
• the light source may have, for example, a diameter between 18 and 24 cm on its bottom plate 16.
• the illuminant may for example have a diameter between at least 23 and at most 50 cm. The distance between bottom plate 16 and cover plate
• the 15 can be from at least 27 cm to a maximum of 42 cm.
• eight light-emitting diodes per heat sink 13 can be used in the light-emitting means.
• six heat sinks 13 are inserted into a light source, so that the light source has six different light angles, in which the emission characteristics of the light generated can each differ from each other.
• the mounting of the luminous means 1 takes place, for example, from below, that is to say from the bottom plate 16 upwards, that is, toward the cover plate 15.
• the tube 20 is screwed onto the base.
• the visor 11 is inserted with the openings 12 in a groove on the bottom plate 16.
• the heat sink 13 are mounted on the cover plate 15 and this is fixed with a groove on the visor 11.
• the cover plate 15 can be screwed to the tube 20.
• the heat sink 13 can be mechanically detachably connected to the base 17 by screwing or press fitting.
• the heat sink 13, for example, from above through the lid, for example, on cylindrical pins in the base 17th plugged.
• On the cover plate 15 may further be attached a printed circuit board to which the circuit boards 19 of each heat sink 13 are then electrically connected.
• a cable - for example, a ribbon cable - for connecting the printed circuit boards 19 can be pulled through the pipe.
• the ribbon cable is used for electrical connection of the LEDs 10 and is connected, for example, with ballasts 31 for driving the LEDs.
• Ballasts 31 on a cover plate of the lamp 100 may be arranged.
• ballasts 31 are attached to an angle 32, to which the cover plate 30 of the lamp is also attached.
• the ballasts 31 for controlling the light-emitting diodes 10 in the lamp 1 itself that is, for example, are arranged within the limited by the screen 11 and the cover plate 15 and the bottom plate 16 hollow body.
• the luminous means has a cooling body 13, which has a plurality of side faces 132, in the present example, six side faces 132.
• the side surfaces enclosing present the volume of a truncated pyramid with hexagonal base.
• a connection carrier 138 is arranged in the region of the mounting surface 14, which is designed as a printed circuit board.
• LEDs 10 in this case in each case six LEDs 10, attached to the connection carrier 138 and electrically contacted.
• each two connection carrier 138 is assigned a common ballast 31, which is connected by means of a plug connection with the associated connection carriers.
• the ballasts 31 and optionally the other electrical or electronic components are used to control and power the LEDs of the lamp.
• all side surfaces 132 have the same angle of inclination with the bottom surface 133.
• the side surfaces 132 are inclined, for example, at an angle of 30 ° from the normal to the bottom surface 133.
• the light-emitting diodes 10 emit their light therefore in a main emission direction, which is directed obliquely downwards, for example towards a road.
• the position of the luminous means within the luminaire can be adjusted along the direction predetermined by the tube 20, so that the height of the luminous means can be adjusted, for example, over the road.
• the heat sink 13 of the light source can be produced in different ways.
• the heat sink 13 is integrally formed and, for example, injection molded or injection-molded.
• the heat sink can then consist in particular of a plastic material.
• the side surfaces 132 and the bottom surface 133 are riveted together.
• the bottom surface 133 and the side surface 132 are then formed of, for example, a metal.
• Metal plate for example, a sheet, cut and / or punched.
• the side surfaces 132 are then bent into the desired position and optionally welded, riveted or screwed together to increase stability.
• the bottom surface 133 and the side surfaces 132 are integrally formed with each other in this case. Further, it is possible that between the side surfaces 132 and the bottom surface 133 each have a hinge 137 is formed, via which the inclination of each side surface can be adjusted relative to the bottom surface.
• FIG. 7 shows a heat sink 13, as it can be used for a lamp described here.
• the side surfaces 132 are each connected to the bottom surface 133 by a hinge 137, so that the inclination angle of each side surface 132 to the bottom surface 133 can be individually adjusted. A mechanical fixation of the side surfaces 132 can then take place by mutual screwing, riveting or welding.
• FIG. 8A shows a plan view of a bottom surface 133 in which first recesses 134 are arranged, each of which can receive a side surface 132.
• the first recesses 134 are grooves into which the side surfaces 132 protrude in places.
• An assembly of the side surfaces 132 then takes place for example by plugging or latching hooks and optionally subsequent screwing.
• FIG. 8B also shows an exemplary embodiment of the luminous means, in which the side surfaces 132 are each formed by connection carriers 138.
• FIG. 9 shows, by way of example, an axisymmetric light intensity distribution, as emitted, for example, by the luminous means of FIG. 6 during operation.
• An asymmetrical distribution of light intensity can be adjusted by different angles of inclination between the side surfaces 132 and the bottom surface 133.

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• Engineering & Computer Science (AREA)
• General Engineering & Computer Science (AREA)
• Physics & Mathematics (AREA)
• Microelectronics & Electronic Packaging (AREA)
• Optics & Photonics (AREA)
• Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
• Non-Portable Lighting Devices Or Systems Thereof (AREA)
• Fastening Of Light Sources Or Lamp Holders (AREA)

Applications Claiming Priority (3)

Publications (1)

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ID=42675118

Family Applications (1)

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• 2009
  • 2009-06-22 DE DE102009029839A patent/DE102009029839A1/de not_active Withdrawn
• 2010
  • 2010-03-31 WO PCT/EP2010/054370 patent/WO2010112572A1/de active Application Filing
  • 2010-04-01 CN CN201080015708.4A patent/CN102388262B/zh not_active Expired - Fee Related
  • 2010-04-01 WO PCT/EP2010/054444 patent/WO2010112595A1/de active Application Filing
  • 2010-04-01 KR KR1020117026252A patent/KR20120006038A/ko not_active Application Discontinuation
  • 2010-04-01 EP EP10718900A patent/EP2414727A1/de not_active Withdrawn
  • 2010-04-01 US US13/262,806 patent/US8992046B2/en not_active Expired - Fee Related
  • 2010-04-01 JP JP2012502699A patent/JP2012523070A/ja active Pending

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