EP2694876A1 - Led-lampe mit einer led als leuchtmittel und mit einem lampenschirm aus glas oder kunststoff - Google Patents

Led-lampe mit einer led als leuchtmittel und mit einem lampenschirm aus glas oder kunststoff

Info

Publication number
EP2694876A1
EP2694876A1 EP12717226.0A EP12717226A EP2694876A1 EP 2694876 A1 EP2694876 A1 EP 2694876A1 EP 12717226 A EP12717226 A EP 12717226A EP 2694876 A1 EP2694876 A1 EP 2694876A1
Authority
EP
European Patent Office
Prior art keywords
base
led
lamp according
carrier body
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.)
Withdrawn
Application number
EP12717226.0A
Other languages
German (de)
English (en)
French (fr)
Inventor
Alexander Dohn
Roland Leneis
Alfred Thimm
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
Publication of EP2694876A1 publication Critical patent/EP2694876A1/de
Withdrawn legal-status Critical Current

Links

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
    • F21V3/00—Globes; Bowls; Cover glasses
    • F21V3/04—Globes; Bowls; Cover glasses characterised by materials, surface treatments or coatings
    • F21V3/06—Globes; Bowls; Cover glasses characterised by materials, surface treatments or coatings characterised by the material
    • F21V3/062—Globes; Bowls; Cover glasses characterised by materials, surface treatments or coatings characterised by the material the material being plastics
    • F21V3/0625—Globes; Bowls; Cover glasses characterised by materials, surface treatments or coatings characterised by the material the material being plastics the material diffusing light, e.g. translucent plastics
    • 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
    • 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
    • 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
    • F21K9/60—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction
    • F21K9/64—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction using wavelength conversion means distinct or spaced from the light-generating element, e.g. a remote phosphor layer
    • 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
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V3/00—Globes; Bowls; Cover glasses
    • F21V3/04—Globes; Bowls; Cover glasses characterised by materials, surface treatments or coatings
    • F21V3/06—Globes; Bowls; Cover glasses characterised by materials, surface treatments or coatings characterised by the material
    • F21V3/061—Globes; Bowls; Cover glasses characterised by materials, surface treatments or coatings characterised by the material the material being glass
    • F21V3/0615—Globes; Bowls; Cover glasses characterised by materials, surface treatments or coatings characterised by the material the material being glass the material diffusing light, e.g. translucent glass
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V3/00—Globes; Bowls; Cover glasses
    • F21V3/04—Globes; Bowls; Cover glasses characterised by materials, surface treatments or coatings
    • F21V3/10—Globes; Bowls; Cover glasses characterised by materials, surface treatments or coatings characterised by coatings
    • F21V3/12—Globes; Bowls; Cover glasses characterised by materials, surface treatments or coatings characterised by coatings the coatings comprising photoluminescent substances
    • 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
    • F21K9/238—Arrangement or mounting of circuit elements integrated in the light source
    • 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
    • F21V23/003—Arrangement of electric circuit elements in or on lighting devices the elements being electronics drivers or controllers for operating the light source, e.g. for a LED array
    • F21V23/004—Arrangement of electric circuit elements in or on lighting devices the elements being electronics drivers or controllers for operating the light source, e.g. for a LED array arranged on a substrate, e.g. a printed circuit board
    • F21V23/005—Arrangement of electric circuit elements in or on lighting devices the elements being electronics drivers or controllers for operating the light source, e.g. for a LED array arranged on a substrate, e.g. a printed circuit board the substrate is supporting also the light source
    • 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
    • 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
    • F21Y2105/00—Planar light sources
    • F21Y2105/10—Planar light sources comprising a two-dimensional array of point-like light-generating elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2107/00—Light sources with three-dimensionally disposed light-generating elements
    • F21Y2107/10—Light sources with three-dimensionally disposed light-generating elements on concave supports or substrates, e.g. on the inner side of bowl-shaped supports
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2107/00—Light sources with three-dimensionally disposed light-generating elements
    • F21Y2107/20—Light sources with three-dimensionally disposed light-generating elements on convex supports or substrates, e.g. on the outer surface of spheres
    • 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

  • LED lamp with a LED as a bulb and with a lampshade off
  • the invention relates to an LED lamp according to the preamble of claim 1.
  • an LED lamp with at least one LED is described as a light source.
  • the lamp consists of a ceramic base and a base body arranged on the ceramic carrier body with a support surface for receiving the LED ' s.
  • sintered metallization regions which form a printed circuit board, are arranged on the carrier surface.
  • the metallization areas are used to solder the LED ' s with possibly the associated circuit. Because the metallization are sintered, an extremely good heat dissipation from the LEDs is ensured in the ceramic of the support body.
  • the support surface of the carrier body on which the LED's are located is covered by a light transmitting lampshade.
  • the invention has the object of developing an LED lamp according to the preamble of claim 1 so that the radiated light of the LED ' s can be influenced and directed by simple means.
  • the lampshade is designed as a dome, dome or hood and is made of glass or plastic.
  • a dome, dome or hood may direct the light generated by the LED 's by simple means and influence.
  • the region of the lampshade adjoining the carrier body is cylindrical and this region merges in one piece into a spherical lid. As a result, the spherical lid is slightly further away from the LED ' s so that the focal point is shifted outwards.
  • the inner surface of the lampshade is provided with a photoactive layer which alters the color of the emitted light of the LED 's . This makes it possible to set any desired color
  • the carrier surface of the carrier body is convex or concave, whereby the emitted light is scattered or bundled.
  • the base and the support body are integrally formed, thus helping to bring the heat transport from the LED 's on the metallization to the ceramic of the support body and the socket is reinforced.
  • the base and the carrier body are formed in two parts, wherein the carrier body consists of a ceramic with an equal or better heat conduction than the ceramic of the base and the carrier body is thermally conductively connected to the base.
  • the ceramic of the carrier body can be selected as different from the ceramic of the base.
  • the base may have cooling fins on its outer surface.
  • the carrier body consists of high thermal conductivity aluminum nitride AIN.
  • the base of alumina or aluminum nitride.
  • the support body and the base are made of alumina.
  • the electrical connection wires are guided through a cavity in the base to the carrier body and there are electrically connected to the sintered metallization regions which form a circuit board or directly to the LED ' s.
  • the connecting wires are arranged protected in the base.
  • a socket such as E27 or a plug such as GU10 may be arranged. This facilitates the assembly.
  • the invention will be further explained with reference to four figures.
  • the lamp 10 consists of a one-piece or one-piece ceramic base support 6, which is at the same time socket or base 1 and support body 2 of the LED 's 3 including the required electrical / electronic circuit 7.
  • the surface of the support body 2 forms a support surface 2a on which the LEDs are arranged.
  • the ceramic base carrier 6 (for example, made of aluminum oxide or aluminum nitride) may have a classic version 9 (light bulb socket see Figure 3) or socket as E27 or a jack or plug 4 (see Figure 2 or 4) as GU10. From here, the supply line of the electrical connection wires 8 up to the LEDs 3.
  • the base support 6 may also be formed in two parts with a base 1 and a carrier body 2 arranged thereon with a support surface 2a on which the LED ' s 3 and possibly. the circuit 7 are arranged.
  • the support surface 2a of the support body 2 on which the LED ' s 3 and the circuit 7 are applied flat or flat.
  • the one-piece ceramic base support 6 can also be formed hollow. In the cavity s may be accommodated 3 if necessary drivers for any LED '. On the outside of the ceramic base support 6 or only on the outside of the base 1 may be arranged cooling fins.
  • a lampshade 5 here a glass dome or glass dome or glass dome slipped and fixed by preferably soldering or gluing.
  • the carrier body 2 is also described as a ceramic LED platform.
  • This lampshade 5 or glass dome protects the one hand, the LEDs 3, can direct the light (eg widen the beam), and if necessary also by applied light-active materials or layers change the light in the color and thus produce a more pleasant light tint (principle of the fluorescent tubes ).
  • the area 5c of the lampshade 5 adjoining the carrier body 2 is preferably cylindrical, as shown in FIGS. 1-4, and this area 5c merges integrally into a spherical lid 5a.
  • the inner surface 5b of the lampshade 5 is preferably provided with a light-active layer which changes the color of the emitted light of the LED 's 3.
  • the base support 2 is formed as a circuit board. This is achieved by the fact that 2 sintered metallization areas are applied to the support surface 2a of the support body. Reference is made to WO 2007107601 A2, in which this is described. In this metallization, the LED can 's 3 and the circuit 7 are soldered directly.
  • the advantage lies, inter alia, in the fact that the heat generated by the LED 's 3 is conducted directly into the ceramic of the carrier body 2 due to the high thermal conductivity.
  • FIG. 2 and FIG. 3 show an alternative embodiment of the invention, which differs from the embodiment according to FIG. 1 in that the carrier surface 2a of the carrier body 2 is convex (FIG. 2) or concave (FIG. 3). As a result, the light is scattered or bundled emitted.
  • FIG. 2 shows a plug 4 GU10 and FIG. 3 shows a socket 9 like E27. Otherwise, the embodiments according to FIGS. 2 and 3 are identical to those of FIG.
  • the upper end of the ceramic base support 1, ie the support surface 2a of the support body 2 for the LED ' s 3 and the circuit 7 may be as flat ( Figure 1) or curved (convex, Figure 2) or concave ( Figure 3), preferably outside rounder Carrier body 2 for the LEDs 3 (one or more) may be formed, which can be soldered here to a conventional thick-film metallization such as Ag or AgPt. In addition, even ballasts have space, printed in thick film technology or soldered as SMT resistors.
  • the support body 2 with its support surface 2a for receiving the LEDs 3 and the circuit 7 may also be formed as a disk-shaped one-piece component (see Figure 4), which is connected to the base 1 thermally conductive.
  • This carrier body 2 is then preferably a carrier disk and can then be made of a more expensive ceramic material such as AIN for better heat conduction, whereas the base 1 can consist of a low-cost ceramic such as Al 2 O 3. In this case, the thermal conductivity WLF of the carrier body 2 would then be greater than the thermal conductivity of the base 1.
  • FIG. 4 shows by way of example a plug 4 GU10.
  • Certain LEDs 3 can also be connected directly to the 220-230 V AC home network on suitable interconnect structures (sintered metallizations on the support surface 2a). You do not need any more drivers for this, both amplitudes (+/-) make the diodes or LEDs 3 light up. Of course, other LEDs 3, then with drivers as a circuit, can be installed. As already described on FIG. 1, a lampshade 5 or glass dome (glass dome) is placed over the ceramic LED platform or the support body 2 and fixed to the support body by soldering or gluing. This lampshade 5 protects the one hand, the LEDs 3, can direct the light (eg widen the beam), and if necessary also by applied light-active materials or layers change the light in color, produce a more pleasant light tint (principle of the fluorescent tubes).
  • the support body 2 with its support surface 2a and the base 1 either as a one-piece base support 6 ( Figures 1, 2, 3) or as separate components ( Figure 4) are basically a special ceramic heat sink.
  • On the support surfaces 2a is by the sintered metallizations created a board which is the carrier of the LEDs 3 and the circuit 7. Due to the choice of ceramics, an extremely high thermal conductivity can be created, so that the lamp according to the invention on the one hand easy to manufacture and on the other hand has a long life, since the heat generated by the LEDs is dissipated.
  • the lampshade 5 could consist of special translucent plastics which, for example, filter out a light color such as ultraviolet or blue without a conversion layer, at the expense of a lower luminous efficacy.
  • the glasses which are generally more transparent and coated, it is possible to convert unwanted light colors with similar total light output.
  • the base 1 can also be made hollow. If required, drivers for any LEDs 3 could be accommodated in the cavity. On the outside of the base 1 cooling fins may be arranged. Likewise also, the one-piece or one-piece base support 6 are formed hollow to accommodate drivers for any LEDs 3, if necessary.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (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)
  • Securing Globes, Refractors, Reflectors Or The Like (AREA)
EP12717226.0A 2011-04-04 2012-03-30 Led-lampe mit einer led als leuchtmittel und mit einem lampenschirm aus glas oder kunststoff Withdrawn EP2694876A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011006724 2011-04-04
PCT/EP2012/055745 WO2012136578A1 (de) 2011-04-04 2012-03-30 Led-lampe mit einer led als leuchtmittel und mit einem lampenschirm aus glas oder kunststoff

Publications (1)

Publication Number Publication Date
EP2694876A1 true EP2694876A1 (de) 2014-02-12

Family

ID=46017809

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12717226.0A Withdrawn EP2694876A1 (de) 2011-04-04 2012-03-30 Led-lampe mit einer led als leuchtmittel und mit einem lampenschirm aus glas oder kunststoff

Country Status (10)

Country Link
US (1) US20140022784A1 (enrdf_load_stackoverflow)
EP (1) EP2694876A1 (enrdf_load_stackoverflow)
JP (1) JP2014512079A (enrdf_load_stackoverflow)
KR (1) KR20140023339A (enrdf_load_stackoverflow)
CN (1) CN103562632A (enrdf_load_stackoverflow)
DE (1) DE102012205179A1 (enrdf_load_stackoverflow)
PH (1) PH12013502052A1 (enrdf_load_stackoverflow)
RU (1) RU2013148612A (enrdf_load_stackoverflow)
TW (1) TW201307747A (enrdf_load_stackoverflow)
WO (1) WO2012136578A1 (enrdf_load_stackoverflow)

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WO2012136578A1 (de) 2012-10-11
DE102012205179A1 (de) 2012-10-04
JP2014512079A (ja) 2014-05-19
PH12013502052A1 (en) 2013-12-16
US20140022784A1 (en) 2014-01-23
TW201307747A (zh) 2013-02-16
KR20140023339A (ko) 2014-02-26
RU2013148612A (ru) 2015-05-10
CN103562632A (zh) 2014-02-05

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