EP2483593B1 - Lampe avec substrate variable comme base pour la source lumineux - Google Patents

Lampe avec substrate variable comme base pour la source lumineux Download PDF

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Publication number
EP2483593B1
EP2483593B1 EP10779685.6A EP10779685A EP2483593B1 EP 2483593 B1 EP2483593 B1 EP 2483593B1 EP 10779685 A EP10779685 A EP 10779685A EP 2483593 B1 EP2483593 B1 EP 2483593B1
Authority
EP
European Patent Office
Prior art keywords
mounting substrate
lamp
led
lamp according
ceramic
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.)
Not-in-force
Application number
EP10779685.6A
Other languages
German (de)
English (en)
Other versions
EP2483593A1 (fr
Inventor
Alexander Dohn
Karl Degelmann
Christian Schnagl
Armin Veitl
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.)
Ceramtec GmbH
Original Assignee
Ceramtec 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 Ceramtec GmbH filed Critical Ceramtec GmbH
Priority to PL10779685T priority Critical patent/PL2483593T3/pl
Priority to SI201030629T priority patent/SI2483593T1/sl
Publication of EP2483593A1 publication Critical patent/EP2483593A1/fr
Application granted granted Critical
Publication of EP2483593B1 publication Critical patent/EP2483593B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • F21V23/00—Arrangement of electric circuit elements in or on lighting devices
    • F21V23/001—Arrangement of electric circuit elements in or on lighting devices the elements being electrical wires or cables
    • F21V23/002—Arrangements of cables or conductors inside a lighting device, e.g. means for guiding along parts of the housing or in a pivoting arm
    • 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
    • F21V29/86—Ceramics or glass
    • 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.
  • Ceramic lamps are optimally designed according to the current state for a specific light source (LED, fluorescent tube, filament). As a result, the required heat dissipation is firmly designed. Disadvantage is that for each variant of the actual light source, a redesign of the lamp necessary and the production becomes inflexible. Hardly any components of the different lamps can be interchanged.
  • US 2008/0149945 A1 describes a substrate made of aluminum nitride.
  • FIG. 2 shows such a lamp according to the prior art.
  • the lamp for receiving an LED as a lighting means consists of a lower part 1 as a lamp base and support member for the LED and for supplying the electrical connection wires to the LED.
  • the mounting device for the LED is integrated in the lower part 1 or in the lamp base and consists of a tungsten-nickel receiving region 14, to which the LED is soldered.
  • a lampshade 3 surrounds the LED.
  • the disadvantage of this lamp is that only by a redesign the lamp can be adapted to different light sources with different heat development.
  • the lamp base is made of a single ceramic, so that when changing the material due to better heat conduction or design reasons always the entire lamp base the color of the new Ceramic and so no individual adjustments to the various color designs of the lampshade is possible.
  • the color of the lamp cap is hardly to be varied as a technically preferred material and, for example, adapted to a brightly colored lampshade.
  • the invention has for its object to improve a lamp according to the preamble of claim 1 so that the lower part and the lamp base can be adapted to a variety of materials or design requirements, without the technical needs are neglected.
  • the production should be flexible and components of different lamps interchangeable.
  • the mounting device is a separate mounting substrate with a breaking strength between 100 and 1000 MPa
  • the material of the mounting substrate has a thermal conductivity between 10 and 250 W / m ° K and the mounting substrate is arranged on the lower part
  • the technical requirements are met or can be fulfilled and at the same time the lower part or the lamp base can be adapted to the most diverse materials or design requirements.
  • the production is flexible and components of the various lamps can be exchanged with each other.
  • At least one metallization region for soldering the LED is preferably applied to the mounting substrate.
  • This Metallization region consists in one embodiment of tungsten-nickel, wherein the metallization regions are made of tungsten and are chemically nickel-plated.
  • the material of the mounting substrate has a thermal conductivity between 20 and 200 W / m ° K.
  • the mounting substrate consists of a ceramic. Ceramics can have excellent thermal conductivity and high resistance to breakage. They are therefore ideal for a mounting substrate. According to the invention, the surface of the ceramic substrate contains sintered metallization regions for soldering the LED (s).
  • feedthroughs for the electrical connection wires are arranged in the mounting substrate. These connecting wires are electrically conductively connected to the metallization regions.
  • the mounting substrate is a disc-shaped mounting plate. Slices are easy to produce and are also easy to arrange on the base. LEDs can be easily soldered to mounting washers, as the surfaces are flat.
  • the lamp is modularly composed of three ceramic parts, namely the lower part, the mounting substrate and the lampshade.
  • the lampshade has on its outer surface longitudinally extending ribs which increase the surface area for cooling. Ceramics can be produced in a wide variety of colors, so that the lampshade can be adapted to individual design specifications. This also applies to the lower part as a lamp base.
  • the mounting substrate is not visible from the outside, so that its ceramic can be adapted exclusively to the technical requirements.
  • the color of the mounting substrate is not important because it is not visible from the outside.
  • the lower part is cylindrical with an inner cavity and two end faces, wherein the first end face is closed and having passages or connecting elements for the connecting wires and the second end face is closed by the mounting substrate.
  • the mounting substrate forms in this embodiment, the closure of the lower part, whereby material is saved and at the same time an optimal fit of the mounting substrate is given.
  • the outer upper end of the lower part facing the mounting substrate preferably has a radially projecting shoulder on which the lampshade is seated and surrounds the outer upper end of the lower part.
  • Base and lampshade form a unit and can be easily attached to each other.
  • the mounting substrate has on its outer circumference on a radial indentation, on which a shoulder of the lampshade is seated and engages around the mounting substrate.
  • the mounting substrate is thereby firmly anchored.
  • the mounting substrate can also be connected to the other parts of the lamp by means of a screw connection, adhesive bonding or a bayonet closure.
  • the mounting substrate can also be mechanically and / or chemically bonded (gluing, active soldering, glass soldering, metallizing or soldering) to the other parts of the lamp.
  • the lampshade completely surrounds the mounting substrate, so that it is not visible from the outside. Only this hiding inside the lamp makes it possible to select the ceramics exclusively according to the technical requirements and not according to design wishes.
  • the mounting substrate consists of highly heat-conductive aluminum nitride AlN. With aluminum nitride, the technical requirements of breaking strength and thermal conductivity are best fulfilled.
  • the lampshade in a preferred embodiment is ruby-colored alumina with chromium oxide doping.
  • all or some of the ceramic parts of the lamp made of alumina, glassy or pure, with or without additives, such as Cr203 as an additive, having a thermal conductivity of 20 to 40 W / m ° K, or aluminum nitride with a thermal conductivity of 160 to 200 W. / m ° K.
  • all or some of the ceramic parts of the lamp are made of a transparent, transparent, translucent or translucent ceramic.
  • the connecting wires are guided through the cavity in the lower part to the mounting substrate and are there electrically connected to the mounting substrate or directly to the LED.
  • the lamp is preferably a base GU10 lamp.
  • a lamp with replaceable mounting substrate for the light source is presented.
  • This mounting substrate can be varied in material (different thermal conductivity) and strength and adapted to the dissipated amount of heat of the light source. With the help of a screw connection, bonding, bayonet closure or the like, the mounting substrate with the remaining parts of the lamp body mechanically and / or chemically (bonding, active soldering, glass soldering, metallizing and soldering) connected.
  • This mounting substrate can also consist of other material (other ceramic, metal, etc.) than the other (visible) lamp parts and also be different in color, because, for example, alumina can be strongly colored by doping, because of his good thermal conductivity as a mounting substrate attractive but not gray aluminum nitride. Inside the lamp, however, it is not visible and only has to fulfill its technical purpose.
  • the substrate itself can be produced by the known methods of molding such as dry pressing, injection molding in the case of ceramics, by melting glass to metal in the case of enameled metal, injection molding in the case of plastic, etc.
  • FIG. 1 a lamp according to the invention described.
  • FIG. 3 shows a ceramic substrate 4 according to the invention.
  • a socket GU10 lamp according to the invention consists of a lower part 1 with power supply 2, lampshade 3 and adhesive mounting substrate. 4
  • the mounting substrate 4 is in this example a mounting plate for the LED and consists of unattractive gray highly heat-conductive AIN, the lampshade 3 of ruby-colored aluminum oxide with Chromoxiddot mich.
  • the mounting substrate 4 is not visible.
  • the lamp body or lampshade 3 is closed with a glass pane (not shown) at the upper end of the lampshade 3.
  • metallization regions 15 for soldering the LED (s) are arranged on the surface of the ceramic substrate 4.
  • bushings 16 or plug elements for the electrical connecting wires are arranged in the mounting substrate. These connecting wires are electrically conductively connected to the metallization regions 15.
  • any number of metallization regions 15 may be arranged on the mounting substrate 4 any number of metallization regions 15 may be arranged.
  • the mounting substrate 4 has a radial indentation 13 on the circumferential surface facing the metallization region 15 for better fixation.
  • the lamp is modularly formed from three ceramic parts, namely a lower part 1 with a power supply 2, a mounting substrate 4 Through the power supply 2, for example, electrical connection wires (not shown in the figure) are guided in the lower part 1 and within the lower part 1 to the mounting substrate 4.
  • the mounting substrate 4 consists of a ceramic, preferably a high heat dissipation.
  • a light source or a plurality of light sources are attached on the mounting substrate 4.
  • LEDs are preferably used.
  • the lampshade 3 is also preferably made of a ceramic with cooling fins 5 on its outer surface. The cooling fins 5 extend in the longitudinal direction of the lampshade third
  • mounting substrate is the more general term, since the mounting substrate is only a mounting plate.
  • the mounting substrate may also not be disc-shaped. Otherwise both terms describe the same item.
  • the lampshade 3 For better attachment of the lampshade 3 on the lower part 1, this has on its inner surface a paragraph 8, with which the lampshade 3 is seated on a corresponding paragraph or indentation 13 on the mounting substrate 4.
  • the lower end of the lampshade 3 surrounds the mounting substrate 4 and the upper end 12 of the lower part 1.
  • the mounting substrate 4 is arranged between the lampshade 3 and the lower part 1, that it is not visible from the outside.
  • the upper, the mounting plate 4 facing away from the end of the lampshade 3 has an inner shoulder 6 for receiving a glass.
  • the lower part 1 is formed cylindrically with an inner cavity 7. This saves material.
  • the lamp according to the invention thus consists of a lower part 1, a mounting plate 4 and a lampshade 3, which surrounds the light source, an LED. On the mounting substrate 4, the light source is attached.
  • the lampshade 3 which surrounds the LED (light source), has three functions. It protects the LED from damage and its color design influences the color of the emitted light. In the main, however, it serves as a heat sink, ie for heat dissipation of the heat generated by the LED to the ambient air.
  • To increase the surface of the lampshade distributed on its circumference structures may have, such as cooling fins 5, whose cross sections may have any shape.
  • the shape of the lampshade 3 can be arbitrary. It can be round, for example polygonal, oval or elliptical.
  • the lampshade 3 may be glued to the lower part 1 or otherwise firmly connected.
  • the material of the lamp must be heat resistant.
  • a particularly suitable material for the lamp is a ceramic material with a good thermal conductivity, for example alumina, glass-containing or pure, with or without additives, for example Cr 2 O 3, with a thermal conductivity of 20 to 40 W / m ° K, or aluminum nitride with a thermal conductivity of 160 to 200 W / m ° K.
  • the material may be transparent or translucent translucent.
  • the breaking strength of the ceramic materials is preferably between 100 and 1000 MPa.
  • the lower part 1 can also be equipped as a plug for the production of plug-in connections with appropriate sockets or with threads for screwing in brackets or, in occupied with terminal poles sockets, in lamp holders.
  • the lampshade 3 has on its circumference evenly distributed cooling fins 5, so that the outline of the lampshade 3 looks at its opening like a gear.
  • the cooling fins 5 are, in particular in high-power LEDs, an advantage to dissipate the heat generated to the ambient air. Its cross section can take any other possible form such as semicircular or semi-elliptical. For LEDs with low heat loss, the screen can also be smooth. The screen may also have different shapes, such as oval or polygonal.

Landscapes

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

Claims (12)

  1. Lampe destinée à recevoir au moins une LED en tant que moyen d'éclairage, comprenant une partie inférieure (1) en tant qu'élément de support et pour l'amenée des fils de raccordement électriques à un dispositif de montage portant la LED, au nombre d'au moins une, et comprenant un réflecteur (3), le dispositif de montage étant un substrat de montage (4) distinct avec une résistance à la rupture comprise entre 100 et 1 000 MPa, le matériau du substrat de montage (4) présentant une conductivité thermique comprise entre 10 et 250 W/m°K, et le substrat de montage (4) étant disposé sur la partie inférieure (1), caractérisée en ce que le substrat de montage (4) est constitué d'une céramique, que des zones de métallisation 15 frittées, destinées au brasage de la ou des LED(s), sont disposées sur le substrat en céramique (4), et que la lampe est constituée de façon modulaire de trois parties céramiques, à savoir de la partie inférieure (1), du substrat de montage (4) et du réflecteur (3).
  2. Lampe selon la revendication 1, caractérisée en ce que la partie inférieure (1) est réalisée en forme de cylindre, avec une cavité intérieure (7) et deux faces frontales (9, 10), la première face frontale (9) étant fermée et présentant des passages (11) ou des éléments de raccordement pour les fils de raccordement, et la deuxième face frontale (10) étant fermée par le substrat de montage (4).
  3. Lampe selon la revendication 1 ou 2, caractérisée en ce que l'extrémité supérieure extérieure de la partie inférieure (1), qui est tournée vers le substrat de montage (4), présente un épaulement (8) faisant saillie dans le sens radial, sur lequel repose le réflecteur (3) et entoure l'extrémité supérieure extérieure (12)de la partie inférieure (1).
  4. Lampe selon une des revendications 1 à 3, caractérisée en ce que le substrat de montage (4) présente sur son pourtour extérieur une partie en retrait (13) radiale, sur laquelle repose un épaulement du réflecteur (3) et entoure le substrat de montage (4).
  5. Lampe selon une des revendications 1 à 4, caractérisée en ce que le substrat de montage (4) est relié aux autres parties de la lampe au moyen d'un raccord à vis, d'un raccord collé ou d'une fermeture à baïonnette.
  6. Lampe selon une des revendications 1 à 5, caractérisée en ce que le substrat de montage (4) est relié aux autres parties de la lampe par des moyens mécaniques et/ou chimiques (collage, brasage actif, brasage par verre, métallisation ou brasage).
  7. Lampe selon une des revendications 1 à 6, caractérisée en ce que le réflecteur (3) entoure complètement le substrat de montage (4), de sorte qu'il n'est pas visible de l'extérieur.
  8. Lampe selon une des revendications 1 à 7, caractérisée en ce que le substrat de montage (4) est constitué de nitrure d'aluminium AIN à conductivité thermique élevée.
  9. Lampe selon une des revendications 1 à 8, caractérisée en ce que le réflecteur (3) est constitué d'oxyde d'aluminium couleur rubis dopé à l'oxyde de chrome.
  10. Lampe selon une des revendications 1 à 9, caractérisée en ce que toutes les parties ou quelques-unes des parties céramiques de la lampe sont constituées d'oxyde d'aluminium, contenant du verre ou pur, sans ou avec des additifs, par exemple du Cr203 en tant qu'additif, avec une conductivité thermique allant de 20 à 40 W/m°K, ou de nitrure d'aluminium avec une conductivité thermique allant de 160 à 200 W/m°K.
  11. Lampe selon une des revendications 1 à 10, caractérisée en ce que toutes les parties ou quelques-unes des parties céramiques de la lampe sont constituées d'une céramique diaphane, transparente ou translucide.
  12. Lampe selon une des revendications 1 à 11, caractérisée en ce que les fils de raccordement sont guidés à travers la cavité (7) dans la partie inférieure (1), jusqu'au substrat de montage (4) où ils sont reliés électriquement au substrat de montage (4) ou directement à la LED.
EP10779685.6A 2009-09-30 2010-09-30 Lampe avec substrate variable comme base pour la source lumineux Not-in-force EP2483593B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PL10779685T PL2483593T3 (pl) 2009-09-30 2010-09-30 Lampa ze zmiennym podłożem jako podstawą dla źródła światła
SI201030629T SI2483593T1 (sl) 2009-09-30 2010-09-30 Svetilka s spremenljivo podlago kot osnovo za svetlobni vir

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009045162 2009-09-30
PCT/EP2010/005957 WO2011038909A1 (fr) 2009-09-30 2010-09-30 Lampe dotée d'un substrat variable en tant que fond pour la source lumineuse

Publications (2)

Publication Number Publication Date
EP2483593A1 EP2483593A1 (fr) 2012-08-08
EP2483593B1 true EP2483593B1 (fr) 2014-03-05

Family

ID=43532812

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10779685.6A Not-in-force EP2483593B1 (fr) 2009-09-30 2010-09-30 Lampe avec substrate variable comme base pour la source lumineux

Country Status (16)

Country Link
US (1) US8410692B2 (fr)
EP (1) EP2483593B1 (fr)
JP (1) JP2013506940A (fr)
KR (1) KR20120092616A (fr)
CN (1) CN102695907A (fr)
BR (1) BR112012007235A2 (fr)
DE (1) DE102010047030A1 (fr)
DK (1) DK2483593T3 (fr)
ES (1) ES2469095T3 (fr)
HK (1) HK1174088A1 (fr)
PL (1) PL2483593T3 (fr)
PT (1) PT2483593E (fr)
RU (1) RU2012117415A (fr)
SI (1) SI2483593T1 (fr)
TW (1) TW201116753A (fr)
WO (1) WO2011038909A1 (fr)

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Publication number Priority date Publication date Assignee Title
WO2012136578A1 (fr) 2011-04-04 2012-10-11 Ceramtec Gmbh Lampe à diode électroluminescente comprenant une diode électroluminescente comme moyen d'éclairage et un réflecteur en verre ou en plastique
CN105794318B (zh) * 2014-06-17 2018-01-16 飞利浦照明控股有限公司 动态控制电路

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Also Published As

Publication number Publication date
WO2011038909A1 (fr) 2011-04-07
BR112012007235A2 (pt) 2016-04-05
TW201116753A (en) 2011-05-16
US20120262059A1 (en) 2012-10-18
RU2012117415A (ru) 2013-11-10
US8410692B2 (en) 2013-04-02
HK1174088A1 (en) 2013-05-31
PL2483593T3 (pl) 2014-11-28
ES2469095T3 (es) 2014-06-17
PT2483593E (pt) 2014-05-12
JP2013506940A (ja) 2013-02-28
SI2483593T1 (sl) 2014-10-30
DK2483593T3 (da) 2014-05-19
CN102695907A (zh) 2012-09-26
DE102010047030A1 (de) 2011-05-12
EP2483593A1 (fr) 2012-08-08
KR20120092616A (ko) 2012-08-21

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