EP2270384A2 - Lampe - Google Patents

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Publication number
EP2270384A2
EP2270384A2 EP10012150A EP10012150A EP2270384A2 EP 2270384 A2 EP2270384 A2 EP 2270384A2 EP 10012150 A EP10012150 A EP 10012150A EP 10012150 A EP10012150 A EP 10012150A EP 2270384 A2 EP2270384 A2 EP 2270384A2
Authority
EP
European Patent Office
Prior art keywords
reflector
led
lamp
lamp according
light exit
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.)
Withdrawn
Application number
EP10012150A
Other languages
German (de)
English (en)
Other versions
EP2270384A3 (fr
Inventor
Harald Hofmann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Osram GmbH
Original Assignee
Osram GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Osram GmbH filed Critical Osram GmbH
Publication of EP2270384A2 publication Critical patent/EP2270384A2/fr
Publication of EP2270384A3 publication Critical patent/EP2270384A3/fr
Withdrawn legal-status Critical Current

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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
    • F21S45/00—Arrangements within vehicle lighting devices specially adapted for vehicle exteriors, for purposes other than emission or distribution of light
    • F21S45/40—Cooling of lighting devices
    • F21S45/47—Passive cooling, e.g. using fins, thermal conductive elements or openings
    • 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
    • F21K9/20—Light sources comprising attachment means
    • F21K9/23—Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings
    • 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
    • F21V23/00—Arrangement of electric circuit elements in or on lighting devices
    • F21V23/06—Arrangement of electric circuit elements in or on lighting devices the elements being coupling devices, e.g. connectors
    • 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
    • F21V29/71—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks using a combination of separate elements interconnected by heat-conducting means, e.g. with heat pipes or thermally conductive bars between separate heat-sink elements
    • F21V29/713—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks using a combination of separate elements interconnected by heat-conducting means, e.g. with heat pipes or thermally conductive bars between separate heat-sink elements in direct thermal and mechanical contact of each other to form a single system
    • 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
    • F21V29/77—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with essentially identical diverging planar fins or blades, e.g. with fan-like or star-like cross-section
    • F21V29/773—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with essentially identical diverging planar fins or blades, e.g. with fan-like or star-like cross-section the planes containing the fins or blades having the direction of the light emitting axis
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V7/00—Reflectors for light sources
    • F21V7/04—Optical design
    • F21V7/06—Optical design with parabolic curvature
    • 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 invention relates to a lamp according to the preamble of claim 1.
  • Such a lamp is available under the trademark HALOSPOT from Osram GmbH in Kunststoff.
  • the well-known, for example, under the name HALOSPOT 111 known lamp has a socket with two terminal pins, which is connected to a z. B. aluminum-coated reflector is connected.
  • a halogen incandescent lamp is arranged as the light source, wherein the incandescent filament is located approximately in the region of the focal point of the parabolic reflector.
  • the halogen lamp is covered in the main emission of the lamp by a cap which is held by means of two gripping ridges on the reflector edge. The cap prevents direct light emission of the lamp in Hauptabstrahlraum.
  • the well-known lamp has a defined, z. B. very low beam angle, approximately in the range of about 8 ° and thus allows a targeted lighting of building surfaces or objects in the manner of accent lighting over longer distances.
  • the known lamp is typically used in the field of "shop lighting”.
  • the object of the invention is to provide a lamp with a longer life.
  • the invention achieves this object with the features of claim 1, in particular with those of the characterizing part, and is accordingly characterized in that the light source is formed by at least one LED and spaced from the inside of the reflector, and that at least one Functional element of the LED, in particular at least one power supply line of the LED and / or at least one heat sink for the LED, at least partially extends substantially along the light exit plane or at least partially disposed on the side facing away from the reflector of the light exit plane.
  • the principle of the invention thus consists essentially in providing an LED instead of the known halogen incandescent lamp as the light source.
  • an LED assembly such as an LED chip, which may have one or more LED (light emitting diodes).
  • the inventive feature of the distanced arrangement of the LED from the inside of the reflector allows a substantially breakdown-free design of the reflector. While in the lamp of the prior art, the incandescent lamp penetrates the reflector approximately in the region of the vertex of the reflector and is fastened to the reflector in the region of the vertex, according to the invention an attachment of the LED to the edge region of the reflector is possible by means of functional elements which extend substantially along a light exit plane of the lamp extend. At the same time according to the invention there is the possibility of power supply lines, so voltage supply lines, also run in the light exit plane of the lamp. Heat sinks, for example cooling blocks or cooling plates, can also be arranged on the side of the light exit plane facing away from the reflector or on the side of the LED facing away from the reflector.
  • heat sink for the LED As a functional element in the context of the invention, for example, heat sink for the LED, power supply lines for the LED, fasteners for the LED, which allow attachment of the LED relative to the reflector and possibly understood as further components of the LED unit, for example, a chip body.
  • Both the fasteners for the LED and the cooling elements and power supply lines are arranged in the region of the reflector opening so that they allow a virtually trouble-free passage of the entire luminous flux through the reflector opening.
  • the invention recognizes that the arrangement of the functional elements for the LED in the region of the reflector opening raises significantly lower shading problems than if the LED were directly connected to the apex region of the reflector.
  • the one or more heat sinks are also arranged at a distance from the vertex of the reflector.
  • designed as a solid cooling block heat sink can be arranged on the side facing away from the reflector of the LED unit and only slightly affect the light passage due to its compact and central arrangement.
  • heat sinks designed as cooling plates can extend from the LED unit to the edge of the reflector and in this case have a cross-sectional area projected onto the light exit plane, which relative to the entire cross-sectional area of the Reflector opening is negligible and thus the light output from the lamp out also affected only slightly.
  • the principle according to the invention thus consists of not arranging components of an already required geometric size in a region of the apex of the reflector, where this leads to greater light losses, but to arrange these components in a region of the reflector opening and, due to a suitable geometric design, the proportion of the shading cross-sectional area the components based on the entire reflector opening to keep low.
  • the invention recognizes that an LED or an LED unit, that is to say an element which has one or more LEDs, only requires a very small installation space and in this way an arrangement in the focal point or in a focal point area of the reflector is possible without that larger shading problems occur.
  • the functional elements are arranged essentially along the light exit plane or on the side of the light exit plane facing away from the reflector.
  • the functional elements are advantageously arranged at a location as distant as possible from the apex region of the reflector, ie also advantageously in the region of a free edge of the reflector.
  • claim 1 should also include such exemplary embodiments, in which the functional elements are arranged slightly distanced from the reflector opening.
  • the actual, for example, parabolic reflector still a free edge portion is assigned, which has virtually no additional, light directing or photoconductive function and thus represents only a kind of extension of the reflector, for example, for reflector attachment or glare limitation.
  • the light exit plane in the context of the invention is slightly distanced from the actual reflector opening.
  • Directional light distribution in the sense of claim 1 is understood, for example, as a closely radiating, ie predominantly parallel radiation, which requires a parabolic reflector.
  • a directional radiation is also understood to mean a focusing radiation which requires, for example, an elliptical reflector, that is to say a reflector whose reflector inner surface has the curve shape of an elliptical section. Also in this case the reflector is rotationally symmetric.
  • a directional light distribution in the context of the invention is also understood to mean that which is achieved by an almost arbitrary surface structuring of the inner surface of the reflector, for example by attachment of a prism structure or the like.
  • Such structures are known, for example, from the motor vehicle headlight area and are referred to there as free-running.
  • the interior surface of the reflector may also be segmented to provide different reflector contours.
  • the lamp according to the invention has a base for connection to a light-side lamp socket. It may be z.
  • Example to act as a socket conventional design, as it is known, for example from the HALOSPOT 111 ago, which forms an axial end portion of the lamp.
  • a luminaire-side attachment of the lamp can also take place in that fastening elements are arranged in the region of the reflector edge, which cooperate with light-side fastening elements.
  • a fastener comes while a mounting ring od.
  • a base of the lamp according to the invention is understood in such an embodiment of the lamp-side mounting portion which cooperates with the fastening element.
  • the base of the lamp according to the invention can also have the electrical connection contacts for connection to luminaire-side mating terminal contacts, for example in the form of terminal contact pins, which are arranged within the socket, as is the case with the known HALOSPOT 111.
  • the lamp can also be associated with the LED unit connected terminal lugs or terminal contacts that allow a particular immediate light side screw or terminal connection.
  • the mechanical attachment is in this case only below, z. B. the use of a mounting ring.
  • the functional element projects at least partially out of the reflector opening.
  • This design of the functional element takes into account that a shading problem is kept small, as far as the projected to the light exit plane cross section of the functional element makes up only a small area of the entire reflector opening, whereas an extension of the functional element out of the reflector opening, so starting from the light exit plane of the reflector element in directed away substantially in the central longitudinal axis of the reflector, no major shading problems with it.
  • the LED is associated with at least one power supply line which extends substantially along the light exit plane.
  • the arrangement of at least one voltage supply line takes place in such a way that the electrical connection between the LED and the connection contacts arranged on the base does not follow the shortest path along the longitudinal central axis the lamp is made, but is accomplished via a kind of detour, which includes, for example, embracing the reflector edge at least one point and a leading along the power supply line on the outside of the reflector. This practically allows a breakdown-free reflector surface.
  • power supply lines may preferably extend in the opposite direction to one another, ie diametrically, essentially in the region of the light exit plane. This also offers advantages in terms of stability of a later to be described attachment of a unit, which has functional elements of the LED, on the reflector. As far as the LED unit has three power supply lines, for example, are required to two different LED or two different types of LED, for. B. LED of different colors to be able to control separately, these power supply lines are preferably arranged in a respective circumferential angle of 120 ° to each other along the light exit plane.
  • these four voltage supply lines are advantageously arranged such that two voltage supply lines are essentially at an angle of 90 ° ° along the light exit plane to each other.
  • At least one power supply line is provided, the one Surrounds the edge of the reflector opening.
  • the reflector is associated with a transparent cover element which closes the reflector opening.
  • This lid element makes cleaning unnecessary during a long life of the lamp. Except for an approximately in the center of the cover element, ie in the region of the longitudinal center axis of the reflector arranged receptacle for the LED unit, this cover element closes the reflector opening completely and prevents penetration of dust or dirt particles in the reflector interior. The reflector interior is completed in this way and allows a maintenance-free lamp operation.
  • At least one voltage supply line is provided, which is arranged on the side facing away from the reflector of the cover element.
  • the cover element thus optionally also the function of a support element for the power supply line and allows a particularly simple attachment or attachment of the power supply line to the reflector.
  • the cover element for example, directly connected to the free edge of the reflector, for example, be glued.
  • the power supply line which may also be an integral part of a further functional unit comprising assembly, be attached to the lid member or directly on the reflector.
  • the side facing away from the reflector of the cover element can in this way a bearing surface for a structural unit provide easy positioning during assembly.
  • a handle part is provided on the side facing away from the reflector of the light exit plane or, if present, on the side facing away from the reflector of the cover element.
  • This handle part may for example be part of a functional unit having structural unit, which includes, for example, heat sink and power supply lines and possibly required insulating layers or insulator.
  • the grip part can enable a particularly simple assembly of this structural unit on the reflector.
  • the handle part can advantageously also serve to insert the lamp in a lamp socket provided, if only very small installation spaces for the lamp are available.
  • the LED is assigned at least one heat sink for heat dissipation.
  • This embodiment of the invention offers the advantage of a long life of the lamp.
  • the heat sink is arranged at a distance from the vertex of the reflector. This arrangement of the heat sink allows an almost unimpaired light transmission of the light emitted by the LED or the LED unit within the reflector interior.
  • the heat sink is arranged on the side facing away from the reflector of the light exit plane and / or the LED.
  • This embodiment of the invention provides a positioning of the heat sink as far as possible from the vertex of the reflector and thus contributes to a substantially trouble-free light line within the reflector continues at.
  • the heat sink is formed by a compact, in particular solid cooling block.
  • the heat sink comprises a cooling plate, which extends substantially along the light exit plane.
  • a larger compared to a cooling block surface is achieved, which facilitates adalekonvetation.
  • the cooling plates can provide, for example, the aforementioned handle parts. You can also be part of a unit that attaches the LED unit to the reflector.
  • the cooling plate of the LED so the center of the reflector opening, extend substantially to an edge of the reflector opening and in this way for a stable connection, for example by gripping the edge or by a possible interaction with a fastener, for example with a clamping ring or mounting ring, provide, which provides for an indirect attachment of the preassembled unit to the reflector.
  • the reflector is formed substantially continuously.
  • Such a continuous design of the reflector is provided in particular in the region of its apex. This allows undisturbed passing of light within the reflector interior.
  • the reflector of the lamp and thus the entire lamp can now be made easier and easier to install.
  • a first embodiment of the lamp 10 has a base 11 in which two contact pins 12a, 12b are fixed.
  • the number of contact pins is initially to be understood as an example and depends on the type of LED used and their number, in particular the way in which the LED should be controlled.
  • an unillustrated electronic control device in the manner of a ballast can be arranged on the lamp 10.
  • a ballast is preferably arranged on the luminaire side, that is to say on the side of the lamp socket, which is not shown, from the current viewpoint of the lamp 10.
  • the type of contact pins to be used also depends on the required supply voltage.
  • the base 11 is connected to a reflector 13, which is formed according to the embodiment substantially parabolic and has a continuous shell shape.
  • the reflector is designed to be rotationally symmetrical about the longitudinal central axis L of the lamp 10 and has a focal point or focal point region 32 arranged in the region of the longitudinal central axis L and at a vertex or apex region 27 of the reflector 13.
  • the reflector interior 33 ( Fig. 4 ) is essentially empty.
  • the reflector 13 comprises a reflector opening 15, which is bounded by an edge 16 of the reflector.
  • the edge 16 is connected to a clamping or mounting ring 31.
  • the reflector opening 15 provides a light exit plane E ready.
  • an LED unit 19 with at least one LED 20, 20a, 20b, 20c is arranged.
  • the LED 20, 20a, 20b, 20c emits light substantially in the direction x, which strikes the mirrored, in any case, however, reflective inner surface 14 of the reflector 13.
  • the light is directed by the reflector such that the light emitted by or from the LED 20, 20a, 20b, 20c, 20d, 20e leaves the lamp 10 substantially in the main emission direction A and a substantially parallel beam of only a very small one Represents beam expansion of a few degrees.
  • a substantially circular disc-shaped cover member 17 is provided, which has a central recess 18 for receiving the LED unit 19 and is connected to its outer edge region 22 with the free edge region 16 of the reflector element 13.
  • the reflector interior 33 is almost completely closed by the cover element 17.
  • the lid member 17 is made of transparent material, such as transparent plastic, such as acrylic glass and has a smooth or textured surface.
  • the LED unit 19 is, for example, an LED chip, that is to say a carrier component which has at least one LED and has the required electrical connection contacts for the LED or the LED.
  • at least two voltage supply lines 21a, 21b are required. These are guided according to the embodiment substantially along the light exit plane E of the LED unit 19 toward the edge 16 of the reflector 13.
  • the power supply lines 21a, 21b lie directly on the cover element 17. In one embodiment, not shown, the power supply lines may possibly also be an integral part of a cover element 17.
  • a rear portion of the power supply line 24 (or 24a, 24b) is provided.
  • the rear portion 24, 24 a, 24 b of the power supply line extends on the side facing away from the LED unit 19 of the reflector 13 and is in Fig. 1 only shown schematically.
  • An enveloping body 21, for example, a plastic embedding for the line section 24 provides or even an insulating coating can ensure that the power supply line sections 24, 24a, 24b are not freely accessible.
  • a second embodiment of the invention which schematically according to Fig. 2 is implied, the in Fig. 1 illustrated base 11 of the lamp omitted.
  • rear voltage supply line sections 24a, 24b are also unnecessary. Instead, a fastening of the lamp via a clamping or mounting ring 31 is directly on the light side at a designated, not shown attachment point.
  • designated 24 angled terminal lug can be designed in the manner of a plug-in contact or in the manner of a screw and interact directly with light-side mating connection lines or mating terminal contacts. Normally, in this case, when mounting the lamp, it would first be necessary to make electrical contact, for example by making the screw fastening, and then attach the lamp 10 via the clamping or mounting ring 31 on the light side.
  • the clamping or mounting ring 31 of the lamp 10 is referred to in this case.
  • the power supply lines 21a, 21b extend in the region of the light exit plane E and thus occupy only a small areal proportion of the reflector opening 15, otherwise they do not impair the light conduction within the reflector interior 33.
  • the beam path of the light emitted by the LED 20 is schematically shown by dashed arrows Fig. 4 indicated.
  • the LED unit 19 cooling elements in the form of a cooling block 29 or in the form of cooling plates 30a, 30b, 30c, 30d may be assigned, on the side facing away from the reflector 13 of the LED unit 19 and / or are arranged on the side facing away from the reflector of the light exit plane E.
  • a cooling block 29 is provided, which is formed substantially in the shape of a piston and extends away from the actual LED chip 19 in the main emission direction A, ie substantially along the longitudinal central axis L of the lamp 10. The projected onto the light exit plane E surface of the LED chip 19 and the cooling block 29 can therefore be kept relatively small.
  • the LED chips While in LED chips of the prior art, as currently provided by LED chip manufacturers, the LED chips are very extensive in one plane, since the cooling surfaces are arranged along the plane along which the chip extends, according to the invention accommodating a cooling block 29 without significant impairment of the light emission due to the more compact design of the LED chip possible.
  • the detailed design of the LED chip is arbitrary. In this case, it is possible to make use of experiences with the connection of cooling surfaces with the LED in conventional LED chip arrangements.
  • the cooling block 29 can dissipate the heat generated during operation of the LED from the back side of an LED chip 19. Other connections are also conceivable.
  • FIG. 1 shows the arrangement of two cooling plates 30a, 30b, which extend web-like from the LED chip 19 to the edge 16 of the reflector element 13.
  • the embodiment shown in the figures provides both cooling plates 30a, 30b and a cooling block 29. This is only to be understood as an example. Alternatively, it is also possible to provide lamps which have only one cooling block or only one or more cooling plates.
  • the cooling plate 30a contacted with its central contact surface 35, the outer side 36 of the cooling block 29 and forms a thermal bridge for heat conduction. This too is only to be understood as an example, since other contacting possibilities of the cooling plates 30a, 30b with the LED chip 19 are also possible.
  • the heatsinks 30a, 30b, 30c, 30d allow for providing a large surface area so that particularly effective cooling and convection of the generated heat to the environment is achieved.
  • the cooling plates 30a, 30b, with respect to the emission direction A of the lamp 10, are aligned with the voltage supply lines 21a, 21b, 21c, 21d. This also results from the FIGS. 5 to 7 , which will be discussed later. It is advantageous that the overall occupied by the cooling plates and the power supply lines cross-section, so their projected onto the light exit surface area, occupies only a very small area ratio of the total of the reflector opening 15 area.
  • an insulating layer 28 or an insulating body is disposed between the power supply line 21a and the corresponding cooling plate 30a. This ensures an electrical separation of these two components.
  • cooling plates 30a, 30b, 30c, 30d it is possible to electrically connect the cooling plates 30a, 30b, 30c, 30d and the corresponding power supply line 21a, 21b, 21c, 21d.
  • the insulating body 28 can be omitted in such an embodiment.
  • the electrical separation of cooling plates 30a, 30b, 30c, 30d and power supply lines 21, 21b, 21c, 21d is desired.
  • a fastener 31 which is formed in the embodiment as a clamping or mounting ring, provided to a mounting of the LED unit 19, the cooling elements 29, 30a, 30b, 30c, 30d, the insulating body 28 and the power supply lines 21a, 21b , 21c, 21d with the reflector 13 to allow a lamp.
  • some or all of the following elements LED unit 19, cooling block 29, cooling plates 30a, 30b, 30c, 30d, power supply lines 21a, 21b, 21c, 21d and insulator 28 may form a common, preassembled unit.
  • the clamping or mounting ring 31 can be connected to this unit preassembled and can be done as a base instead of the base 11, the connection to the lamp.
  • the cooling plates 30a, 30b, 30c, 30d directly provide a handle body. In the assembled state can be detected by gripping the cooling plates, the entire lamp 10 and mounted in a simple manner.
  • the cooling plates are, as can be seen in particular from the FIGS. 5 and 7 and the Fig. 1 results, relatively narrow, but have a relatively large height extending in the direction of radiation A. This geometric design facilitates detection of the cooling plates, but on the other hand does not affect the light emission.
  • FIGS. 5 to 7 illustrate in plan view of the reflector opening 15 different geometric arrangements and embodiments of lamps depending on the number of required power supply lines. Is how the Fig. 5 indicates only one LED or only one type or group of several LED provided, so only two power supply lines 21a, 21b are required, which are opposite, so extend substantially diametrically to each other.
  • Fig. 6 shows an arrangement with two differently controllable LED or groups of LED, consequently, due to circuitry requirements, at least three power supply lines are required to control these two LEDs individually. It follows accordingly Advantageously, an arrangement in which in each case two voltage supply lines enclose a circumferential angle of 120 ° with each other along the light exit plane E.
  • Fig. 7 shows a third embodiment in which three LEDs (eg red, green, blue) or three groups of LEDs, which are individually controllable, are provided. As a result, four power supply lines are interposed, enclosing an angle of 90 ° therebetween.
  • three LEDs eg red, green, blue
  • three groups of LEDs which are individually controllable
  • the embodiments of the FIGS. 5 to 7 also heat-dissipating cooling plates 30a, 30b, 30c, 30d, which are arranged in alignment with the voltage supply lines 21a, 21b, 21c, 21d.
  • the light emission can thus be done virtually trouble-free.

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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)
  • Fastening Of Light Sources Or Lamp Holders (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
EP10012150A 2004-03-05 2005-03-03 Lampe Withdrawn EP2270384A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004011368 2004-03-05
EP05728246A EP1721102B8 (fr) 2004-03-05 2005-03-03 Lampe

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
EP05728246.9 Division 2005-03-03

Publications (2)

Publication Number Publication Date
EP2270384A2 true EP2270384A2 (fr) 2011-01-05
EP2270384A3 EP2270384A3 (fr) 2011-02-16

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EP10012150A Withdrawn EP2270384A3 (fr) 2004-03-05 2005-03-03 Lampe
EP05728246A Expired - Fee Related EP1721102B8 (fr) 2004-03-05 2005-03-03 Lampe

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP05728246A Expired - Fee Related EP1721102B8 (fr) 2004-03-05 2005-03-03 Lampe

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EP1721102A1 (fr) 2006-11-15
CN1954174B (zh) 2012-07-04
US8162522B2 (en) 2012-04-24
US20110116270A1 (en) 2011-05-19
JP4778503B2 (ja) 2011-09-21
WO2005085706A1 (fr) 2005-09-15
EP1721102B8 (fr) 2012-02-08
EP2270384A3 (fr) 2011-02-16
EP1721102B1 (fr) 2011-08-03
US7857496B2 (en) 2010-12-28
US20070189017A1 (en) 2007-08-16
JP2007526605A (ja) 2007-09-13
CN1954174A (zh) 2007-04-25

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