EP2478296A1 - Leuchtvorrichtung und verfahren zum herstellen eines kühlkörpers der leuchtvorrichtung und der leuchtvorrichtung - Google Patents
Leuchtvorrichtung und verfahren zum herstellen eines kühlkörpers der leuchtvorrichtung und der leuchtvorrichtungInfo
- Publication number
- EP2478296A1 EP2478296A1 EP10749829A EP10749829A EP2478296A1 EP 2478296 A1 EP2478296 A1 EP 2478296A1 EP 10749829 A EP10749829 A EP 10749829A EP 10749829 A EP10749829 A EP 10749829A EP 2478296 A1 EP2478296 A1 EP 2478296A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- heat sink
- lighting device
- driver housing
- sheet metal
- segments
- 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.)
- Granted
Links
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- 108090000623 proteins and genes Proteins 0.000 claims 1
- 230000017525 heat dissipation Effects 0.000 description 10
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- 229910052782 aluminium Inorganic materials 0.000 description 3
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- 241000446313 Lamella Species 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
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- 238000013461 design Methods 0.000 description 2
- 238000013021 overheating Methods 0.000 description 2
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- 239000011265 semifinished product Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 101100346656 Drosophila melanogaster strat gene Proteins 0.000 description 1
- 241000396922 Pontia daplidice Species 0.000 description 1
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- 239000002918 waste heat Substances 0.000 description 1
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
- F21V29/85—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems characterised by the material
- F21V29/89—Metals
-
- 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
- F21V29/502—Cooling arrangements characterised by the adaptation for cooling of specific components
- F21V29/507—Cooling arrangements characterised by the adaptation for cooling of specific components of means for protecting lighting devices from damage, e.g. housings
-
- 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
-
- 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
- F21V29/83—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks the elements having apertures, ducts or channels, e.g. heat radiation holes
-
- 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
- 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
- F21K9/232—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 specially adapted for generating an essentially omnidirectional light distribution, e.g. with a glass bulb
-
- 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]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
Definitions
- Lighting device and method for producing a heat sink of the lighting device and the lighting device are provided.
- the invention relates to a lighting device with at least one heat sink for cooling at least one light source, a method for producing a heat sink of the lighting device and a method for producing the lighting device.
- an LED board In LED lamps, an LED board is often equipped with LEDs, whereby the LEDs are operated via suitable driver electronics. A power loss on the LED board and the driver electronics is dissipated via a heat sink to the ambient air.
- heatsinks made of die-cast aluminum or else so-called "staged-fin" cooling bodies, in which a plurality of individual sheets are assembled to form an overall cooling body by connection technologies such as press-fitting, gluing or soldering, are used.
- the heat sink usually encloses the driver housing, which in turn encapsulates the driver electronics from the environment.
- the LED board with the LEDs on it is mechanically fastened to the heat sink by screwed or glued connections.
- Preferred embodiments are insbesonde ⁇ re the dependent claims.
- the object is achieved by a lighting device with min ⁇ least one heat sink for cooling at least one light source, wherein the at least one heat sink at least one at least bent sheet metal part ('bending plate part'), having.
- the device has at least one sheet metal part, which has been formed at least by means of at least one Biegevor ⁇ gangs.
- Minim ⁇ least one sheet metal part a particularly lightweight heat sink is obtained.
- a particularly simple and inexpensive production process namely the bending process, can be used to produce the heat sink.
- a preformed (eg pre-punched out) sheet semifinished product can be used, so that only the bending process needs to be performed.
- the device has a heat sink at least one stamped and bent sheet metal part ('stamping / bending sheet metal part').
- the device has at least one sheet-metal part which has been formed by at least one Trennverfah ⁇ Rens, in particular stamping process, and by at least one bending operation.
- the punching / bending sheet metal part may be made of a single, or only unommet ⁇ Lich machined plate, which simplifies a manufacturing position.
- the punching process and the bending process can be integrated in a common processing sequence.
- the at least one light source can comprise any desired light source.
- the at least one light source ⁇ may comprise at least one semiconductor light source, for example at least one laser diode or at least one light emitting diode (LED).
- the at least one light emitting diode can have ⁇ as one or more individual LEDs (individually packaged LEDs) or as one or several on a common substrate (such as "submount") existing group of LEDs or LED-chips (LED cluster).
- the LEDs or LED chips can each be monochrome or multicolored, z. B. white, radiate.
- an LED cluster may have a plurality of individual LEDs or LED chips, which together can give a white mixed light, z. B. in 'cold white' or 'warm white'.
- the individual chips and / or the LED clusters can be equipped with suitable optics for beam guidance, z. B. Fresnel lenses, collimators, and so on. Instead of or in addition to inorganic light emitting diodes, z. B. based on InGaN or AlInGaP, organic LEDs (OLEDs) are generally used.
- the carrier substrate may then be formed as an LED board.
- the at least one heat sink is constructed from one or more bent sheet metal parts.
- the heat sink consists essentially only or completely of one or more at least bent sheet metal parts and eg not of cast parts.
- the heat sink may be substantially completely lightweight and simple means Herge ⁇ provides.
- the one sheet metal part or the several sheet metal parts may also be stamped / bent sheet metal parts.
- the sheet is preferably made of a good heat-conducting material (thermal conductivity of at least 15 W / (mK)), eg steel.
- a thermally highly conductive material can be used, for example with or made of aluminum and / or copper.
- the choice of material can also influence the necessary sheet thickness for heat spreading in the heat sink.
- the at least one at least bent (eg punched and bent) sheet metal part from ⁇ alternately bent segments ('heat sink segments') and recesses.
- the bent-over heat sink segments can serve as, for example, free-standing, 'cooling fins', while the recesses allow a sufficient air flow on all sides of the bent heat sink segments.
- the heat sink segments can be used on the outside as well as on the inside. surrounded by fresh air.
- the resulting surface of the cooling body segments may be similar in size to a surface of a conventional cooling body with ribs ⁇ structure, or even greater.
- the at least one heat sink comprises a pipe-like or sleeve-like basic shape anddekör ⁇ ⁇ persegmente and recesses having alternately bent in the circumferential direction. In this case, due to the recesses, fresh air can be conducted to the space surrounded by the heat sink.
- the bent-down cooling body segments each have at least one bent-over cooling lamella.
- the cooling fins can be provided by a corresponding punch, whereby less waste material is obtained in a punching.
- the at least one heat sink has a surface which leads to an increase in the heat radiation.
- the surface of the at least one heat sink is at least partially surface-treated.
- the surface may be painted or anodized to achieve a targeted coloring of the heat sink.
- To increase the heat dissipation of the at least one heat sink may also be subjected to akernbe ⁇ treatment in which the surface is roughened in an area magnification.
- a driver housing is used in the heat sink.
- the bent heat sink segments each have a free end which is fixed to the driver housing. This will cause a bending prevents the heat sink segments.
- the attachment can be accomplished by a combination of play at the respective gripping a bent cooling body segment, in particular at its free end, existing engagement element with a housing present on the driver engagement counterpart element (eg correspondingly shaped grooves) in ⁇ .
- the heat sink segments can be secured against bending, in particular on an upper driver housing (part), for example in grooves.
- the driver housing comprises at least one cooling fin, the cooling fin to ⁇ least partially projects a respective cutout in (including by).
- the driver housing may preferably have a plurality of circumferentially equidistant to ⁇ ordered cooling fins. In particular, if no standard-limiting size is to be adhered to, eg one
- the cooling fin can also protrude beyond the cutout.
- the at least one cooling fin can only in a subsequent step to the dri ⁇ bergenosuse (for example, a sleeve-shaped base body), for example, be produced separately and attached, for example glued, for example, inserted into a groove, in particular longitudinal ⁇ nut.
- the cooling fin can be made of plastic or metal .
- the at least one cooling rib can be made of plastic and, for example, molded onto the driver housing or made in one piece with it, for example by means of an injection molding process.
- the plastic is preferably a thermally conductive plastic with a thermal conductivity of about 1 W / (mK) to about 10 W / (mK).
- the driver housing can generally be made of metal and / or plastic material ⁇ .
- the driver housing may for example be designed in two parts with an upper and a lower driver housing.
- the upper driver housing and the lower driver housing may be plugged together.
- the upper housing and the driver unte ⁇ re driver housing can be mechanically fixed to each other further, for example by a snap connection.
- these may be ge ⁇ coupled to the driver housing advantageously thermally to transport the waste heat more effectively to themaschineerge ⁇ housing.
- This can be done for example by a simple encapsulation of the driver electronics, for example, with a thermally comparatively good conductive Vergussmate ⁇ rial, such as an epoxy resin, polyurethane and / or a silicone-based material.
- a thermally comparatively good conductive Vergussmate ⁇ rial such as an epoxy resin, polyurethane and / or a silicone-based material. It is still an embodiment that the heat sink a
- the contact area of the cooling body for a thermal isolation of themaschineerge ⁇ koruses is spaced from the hot carrier substrate from the driver housing.
- a defined air gap between the driver housing and the heat sink can be provided.
- This example may be implemented at the driver housing by a step, preferably of plastic, in particular ⁇ sondere at a cable entry from the driver electronics to the carrier substrate.
- the lighting device has an at least partially translucent piston, which at least one locking means (eg snap hook or latching lug), which is lockingly buildin ⁇ Untitled to the heat sink.
- the latching means can engage in a respective cutout of the heat sink and, for example, engage with the support substrate with a bearing region of the heat sink.
- the piston is preferably designed as a plastic piston, for example, milky white as a diffuser or transpa ⁇ rent.
- the piston presses the Trä ⁇ gersubstrat at its edge on the heat sink, for example, completely circulating or point or sector distributed circumferentially. This will, possibly together with an intermediate thermal transition material ("Thermal Interface
- the heat sink can generally be configured in one piece or in several parts. It is yet another embodiment that the heat sink is constructed in two parts from two bent sheet metal parts, in particular stamped sheet metal parts, wherein the two curved sheet metal parts can be held together at least by means of the Trei ⁇ bergenosuses and the piston. A (at least) two-part design simplifies the manufacture and assembly.
- the object is also achieved by a method for herstel ⁇ len of a heat sink of the lighting device, the method comprising the steps of at least:
- the semifinished product produced in this way can have a central region which, after the bending process, at least partially surrounds a bearing region for the carrier substrate. strat will correspond.
- the central area can ⁇ example, be circular. From the central region, for example, radially extending, in the circumferential direction equidistant spaced heat sink segments go off, for example, have a substantially lent rod, strip or bar-shaped basic shape. These heat sink segments, after being bent upwards (preferably at their edge to the central area), become the bent heat sink segments serving as cooling elements.
- the method further comprises the following step: bending of cooling fins on the (remaining) heat sink segments. As a result, the heat transfer to the environment through the heat sink segments is further improved.
- the object is further achieved by a method for producing a lighting device, wherein the method has at least the following steps:
- Ele ⁇ elements may be provided with the same reference numerals for clarity.
- Fig.l shows an exploded view of a lighting device according to a first embodiment
- FIG. 2 shows the lighting device according to the first embodiment in side view
- FIG. 3 shows a heat sink and an uppermaschineergeophu ⁇ se of the lighting device according to the first exemplary embodiment in a not yet assembled condition
- 4 shows a side view of a lighting device according to a second embodiment
- FIG. 5 shows obliquely from behind an upper driver housing of the lighting device according to the second embodiment without cooling fins
- FIG. 6 shows the upper driver housing obliquely from the front
- FIG. 7 shows diagonally from behind an upper driver housing according to another embodiment with cooling ribs
- Fig.8 shows obliquely from the front of the upper driver housing
- FIG. 10 shows the lighting device from FIG. 9 in a plan view of a sectional plane
- FIG. 11 shows a more detailed first section of the lighting device shown in FIG. 9
- FIG. Fig. 12 shows a more detailed second section of the lighting device shown in Fig. 9
- 13 shows a side view of a lighting device according to a third embodiment
- FIG. 14 shows the lighting device according to the third exemplary embodiment in oblique viewing in a partially exploded view ⁇ point.
- Fig.l shows a lighting device 1 in an exploded view.
- the lighting device 1 comprises in detail gersubstrat 2 in the form of a LED board on which is the front side ⁇ surmounted by a piston 3 and rests with its rear ⁇ ischenrtigen support surface 4 flat on a heat sink 5, a Trä-.
- the lighting device 1 further has a two-part driver housing 6, which has an upper driver housing 6a and a lower driver housing 6b.
- a driver electronics 7 for driving on the support substrate 2 on the front side mounted several light sources (not visible).
- On the lower Trei ⁇ bergenosuse 6b is a base 8, here in the form of Edisons- crocket placed to supply the lighting device 1 with power.
- the lighting device 1 can serve, for example, as an LED retrofit incandescent lamp for replacing a conventional incandescent lamp.
- the shape of the piston 3 is that of a spherical cap with a slightly more than hemispherical body.
- the piston 3 is to-least partially transparent, to submit the allocate from the LEDs ⁇ light irradiated to the outside.
- the piston 3 is made of a milky white plastic material.
- the piston 3 has four rearwardly projecting snap hooks 9 and latching lugs in order to secure the piston 3 by a simple latching operation can.
- the snap hooks 9 are latched to the heat sink 5.
- the edge of the piston 3 has an annular circumferential step 10 into which the carrier substrate 2 can be fitted. As a result, the carrier substrate 2 can be fixed by means of the piston 3 and also pressed onto the heat sink 5.
- the carrier substrate 2 has a circular disk-shaped basic form, which fits into the stage 10 of the piston. 3 At its front side (not visible), which is arched over by the piston 3, there are one or more light-emitting diodes as the at least one light source. For power supply of the LEDs is broadband transmitting in the carrier substrate 2, a line bushing opening 11 for carrying one or more electrical lines from the driver electronics 7. For heat dissipation sits the carrier substrate 2 with sei ⁇ ner rear bearing surface 4 area on a corresponding Konkt Scheme or support area 12 of the heat sink fifth on.
- the carrier substrate 2 can rest directly on the heat sink 5, in particular being pressed thereon by the piston 3; Alternatively or additionally, the carrier substrate 2 via a, in particular thermally conductive, adhesive (For example, a thermal paste or a TIM ("Thermal Interface Material”) -Kefleefolie be connected to the heat sink 5.
- a thermally conductive, adhesive for example, a thermal paste or a TIM ("Thermal Interface Material") -Kefleefolie be connected to the heat sink 5.
- the heat sink 5 also has in its contact area 12 a line feedthrough opening 13 which covers the line feedthrough opening 11 and also allows a feedthrough of electrical supply and / or signal lines from the driver electronics 7 to the light emitting diodes.
- the support region 12 is designed in the shape of a circular disk and has a slightly larger diameter than the carrier substrate 2.
- a plurality of heat sink segments 14 extend from the edge of the support region 12. Namely, thedekör ⁇ persegmente 14 are equidistantly arranged in the circumferential direction 12 and just over perpendicularly bent upwards at its approach to support portion 12 to the support ⁇ area.
- the heat sink segments 14 have a strip-like, bar-shaped or rod-shaped basic shape.
- the heat sink segments 14 are further bent inwardly at their respective free end 15.
- a heat sink 5 with a substantially tubular or sleeve-shaped basic shape, more precisely a slightly frustoconical basic shape, which is closed on one side by the support area 12 and on its opposite side in the region of the free ends 15 has an insertion opening 16.
- the bent heat sink segments 14 alternate with ent ⁇ speaking recesses 17.
- the recesses 17 can also be regarded as gaps between the heat sink segments 14 arranged equidistantly in the circumferential direction.
- the heat sink 5 has been made in this embodiment in one piece by a stamping / bending process of a sheet metal workpiece.
- the heat sink 5 it is possible, for example, to use a substantially circular disk-shaped metal sheet or a circular-disk-shaped punched-out metal sheet on which
- the heat sink segments 14 are bent at its base with the support area 12 upwards. Also, the free ends 15 are bent in the same direction. Furthermore, if present, one or more regions of the heat sink segments 14 can be bent further outwards in order to obtain cooling fins protruding from the heat sink segments 14.
- the sequence of the processing operations is not restricted to the sequence mentioned above but can also be described in FIG be performed in a different order or partly at the same time.
- the sheet used for producing the cooling body 5 be ⁇ is preferably made of a highly thermally conductive material, for example steel. For increased heat dissipation from the
- Light-emitting diodes can also be another, more conductive, material used, such as copper or aluminum.
- the driver housing 6 For further assembly of the lighting device can following the driver housing 6 are inserted through the insertion opening 16 in the heat sink 5.
- the upper driver housing 6a and the lower driver housing 6b have previously been brought together, with the driver electronics 7 then being located in the driver housing 6.
- the driver electronics 7 can be secured in the driver housing 6 for improved heat dissipation to the driver housing 6 and / or for mechanical protection, for example by a potting material.
- the driver electronics may be attached to the housing 6maschineerge ⁇ 7 by a heat transfer paste, etc. chiropractorschreibgangspads.
- the upper driver housing 6a and the lower driver housing 6b are mechanically fixed for easy installation miteinan ⁇ preferably by a snap connection.
- 2 shows a side view of the lighting device 1 in an assembled state.
- the lighting device 1 is suitable, in particular, for replacing a conventional incandescent lamp, ie for use as an LED incandescent lamp retrofit lamp.
- FIG 3 shows the heat sink 5 and the upper driver housing 6a in a not yet mounted state.
- the upper driver housing 6a is inserted in the direction of arrow in the heat sink 5.
- the upper driver housing 6a has, at the height at which it is opposite the inwardly bent free ends 15 of the heat sink 5, a circumferential ring or edge 18, which in the circumferential direction equidistantly arranged recesses or grooves 19 has.
- These grooves 19 are so asbil ⁇ det that complementary shaped tips 20 of the free ends 15 of the respective heat sink segments 14 can be inserted into the respective grooves 19.
- the tips 20 are pronounced "T" -shaped, with the crossbar of the "T" at the extreme end.
- the cooling body segments may have 14 each ent ⁇ speaking engagement elements which fix with entspre ⁇ sponding engaging counter-elements of the drive housing 6 in the assembled state of the heat sink 5 and the drive housing 6, the cooling body segments 14 on the driver housing. 6
- the lighting device 21 has a differently shaped driver housing 22, namely with ei ⁇ nem similar or the same lower driver housing 22b and an upper driver housing 22a, on the peripheral surface or lateral surface 22c now cooling ribs 23 protrude vertically , These cooling fins 23 extend at least partially into and / or through the recesses 17 of the heat sink 5.
- a verbes ⁇ serte heat dissipation from the drive housing 22 and thus an improved cooling of the drive electronics can be achieved.
- FIG. 5 shows obliquely from behind the upper driver housing 22a without the cooling fins 23.
- FIG. 6 shows the upper driver housing 22a obliquely from the front, likewise without the cooling fins 23.
- the cooling fins 23 are to attach to the upper driver housing 22a, there are longitudinal grooves 24 which extend from an upper edge 25 of the upper driver housing 22a to the circumferential ring 18 in the longitudinal direction of the upper driver housing 22a. These longitudinal grooves 24 serve to receive the cooling ribs 23, for example, by a vertical insertion and bonding of the cooling ribs 23 in the longitudinal grooves 24.
- a tubular or sleeve-shaped cable bushing 27 which through the cable bushing openings 11 and 13, which in Fig.l are shown, is guided.
- the cable guide 27 has a radially widened stage 28 at its transition to the top side 26 of the OBE ⁇ ren driver housing 6a.
- the lighting device will be described in more detail by way of example with reference to the first embodiment. However, these embodiments are general, especially for the other embodiments already shown.
- the lighting device 1 is initially shown as Thomasdarstel ⁇ ment in side view in the assembled state in Fig.9.
- Fig.10 shows the lighting device 1 in plan view of a
- the heat sink segments 14 are arranged equidistantly in the circumferential direction and fitted with their "T" - shaped tips 20 of their free ends 15 of the heat sink segments 14 into the corresponding grooves 19 of the ring 18 fit. Due to the "T" -shaped design of the tips
- FIG. 11 shows the detail B shown in Figure 9 of the light ⁇ device 1 in a region of the cable bushing 27.
- the carrier substrate 2 for the light sources is above a thin TIM adhesive film 30 flat on the support portion 12 of the heat sink 5 on.
- an air gap 29 is generated between the heat sink 5 and the driver housing 6 and the upper driver housing 6a, which suppresses heat dissipation of the heat generated by the LEDs to the upper driver housing 6a , This avoids overheating of the driver electronics.
- 9 shows an enlarged detail C, as shown in FIG.
- the carrier substrate 2 is pressed simultaneously on the cooling ⁇ body 5 to improve heat transfer from the carrier substrate 2 to the heat sink 5 and a seat of the carrier substrate 2 to reinforce.
- FIG. 13 shows a lighting device 41 according to a third exemplary embodiment in a representation analogous to FIGS. 2 and 4, the heat sink segments 42 of the first embodiment now being compared to the first embodiment shown in FIG. 13
- Heat sink 44 are equipped with it, radially outwardly bent cooling fins 43 are equipped. Thereby, the heat dissipation surface of the heat sink 42.
- the segments increasesdela ⁇ mellen 43 may, for example, by a corresponding training modeling of the cooling body segments 14 and a corresponding order ⁇ bend the cooling fins are manufactured 43rd
- FIG. 14 shows obliquely from below the lighting device 41 in a partially exploded view, in which the cooling body 44 is shown separated from the lighting device 41.
- the heat sink 44 is designed in two parts, wherein the two heat sink parts 44a and 44b are separated along a longitudinal plane of the lighting device 41.
- the free ends 45 of the corresponding heat sink segments 42 are now no longer "T" - shaped, but in the form of inwardly and downwardly bent tabs. 42.
- the cooling body segments in a corresponding recess at the lowermaschineergetude ⁇ se 6b and between the upper driver housing 6a and lower driver housing 6b, including a circumferential annular groove are inserted.
- Heatsink parts 44a, 44b for example, by the side Edge of the piston 3 or, if used, are held laterally by the snap ⁇ hook 9.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102009041477 | 2009-09-14 | ||
| DE102009052930A DE102009052930A1 (de) | 2009-09-14 | 2009-11-12 | Leuchtvorrichtung und Verfahren zum Herstellen eines Kühlkörpers der Leuchtvorrichtung und der Leuchtvorrichtung |
| PCT/EP2010/062383 WO2011029724A1 (de) | 2009-09-14 | 2010-08-25 | Leuchtvorrichtung und verfahren zum herstellen eines kühlkörpers der leuchtvorrichtung und der leuchtvorrichtung |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2478296A1 true EP2478296A1 (de) | 2012-07-25 |
| EP2478296B1 EP2478296B1 (de) | 2015-04-01 |
Family
ID=43603566
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP10749829.7A Not-in-force EP2478296B1 (de) | 2009-09-14 | 2010-08-25 | Leuchtvorrichtung und verfahren zum herstellen eines kühlkörpers der leuchtvorrichtung und der leuchtvorrichtung |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US9175841B2 (de) |
| EP (1) | EP2478296B1 (de) |
| CN (1) | CN102575813B (de) |
| DE (1) | DE102009052930A1 (de) |
| WO (1) | WO2011029724A1 (de) |
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| CN103317046A (zh) * | 2012-03-19 | 2013-09-25 | 陈镒明 | 冲压式散热件及其制作方法 |
| US8534875B1 (en) | 2012-05-03 | 2013-09-17 | Shiyong Zhang | Customizable heat sink formed of sheet material for a lamp |
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| USD690053S1 (en) | 2012-08-10 | 2013-09-17 | Osram Sylvania Inc. | Heat sink for a lamp |
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| USD712074S1 (en) | 2012-11-02 | 2014-08-26 | Osram Sylvania Inc. | Lamp |
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- 2010-08-25 CN CN201080040965.3A patent/CN102575813B/zh not_active Expired - Fee Related
- 2010-08-25 US US13/496,138 patent/US9175841B2/en not_active Expired - Fee Related
- 2010-08-25 EP EP10749829.7A patent/EP2478296B1/de not_active Not-in-force
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Also Published As
| Publication number | Publication date |
|---|---|
| CN102575813B (zh) | 2014-11-05 |
| US20120170262A1 (en) | 2012-07-05 |
| DE102009052930A1 (de) | 2011-03-24 |
| CN102575813A (zh) | 2012-07-11 |
| EP2478296B1 (de) | 2015-04-01 |
| US9175841B2 (en) | 2015-11-03 |
| WO2011029724A1 (de) | 2011-03-17 |
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