CN102168832B - Built-in LED lighting device, in particular ceiling lighting device - Google Patents
Built-in LED lighting device, in particular ceiling lighting device Download PDFInfo
- Publication number
- CN102168832B CN102168832B CN201110044052.5A CN201110044052A CN102168832B CN 102168832 B CN102168832 B CN 102168832B CN 201110044052 A CN201110044052 A CN 201110044052A CN 102168832 B CN102168832 B CN 102168832B
- Authority
- CN
- China
- Prior art keywords
- light
- concealed installation
- buck plate
- emitting component
- led light
- 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.)
- Expired - Fee Related
Links
- 230000004308 accommodation Effects 0.000 claims description 9
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 6
- 230000008878 coupling Effects 0.000 claims description 4
- 238000010168 coupling process Methods 0.000 claims description 4
- 238000005859 coupling reaction Methods 0.000 claims description 4
- 230000003287 optical effect Effects 0.000 description 10
- 238000009434 installation Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 238000010276 construction Methods 0.000 description 5
- 230000007774 longterm Effects 0.000 description 4
- 239000004020 conductor Substances 0.000 description 3
- 239000000919 ceramic Substances 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 206010053648 Vascular occlusion Diseases 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S8/00—Lighting devices intended for fixed installation
- F21S8/02—Lighting devices intended for fixed installation of recess-mounted type, e.g. downlighters
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
- Fastening Of Light Sources Or Lamp Holders (AREA)
Abstract
The invention provides a built-in LED lighting device, in particular a ceiling lighting device. The built-in LED lighting device comprises a built-in socket having a support plate. The built-in socket has a light-emitting means and a converter which feeds power to the light-emitting device and has a connection unit for a 230V power line. An additional assembling plate is used for fixing a luminous element to the built-in socket. A plastic support member disposed on the back side of the assembling plate is engaged to a relative containing part of the support plate. The plastic support member has a drill hole which can be entered from the front face of the assembling plate. By means of the support member inserting in the drill hole, preferably screw-in assembling bolt can enable the plastic support member to wedge in and further vertically insert the support plate. The assembling plate is provided with a guiding/stop device at the front face and is engaged with a stop device which is disposed on the back side of the luminous element.
Description
Technical field
The present invention relates to a kind of for being assemblied in concealed installation-LED light device (Unterputz-LED-Leuchte), the especially ceiling lighting device (Deckenleuchte) in concealed installation-appliance case common on (especially according to DIN49073's) market.
Background technology
A kind of lighting device be made up of buck plate, the circuit board with supply line utilizing light emitting diode and also utilize other electronic units to equip where necessary, light distribution plate (Lichtverteilungsscheibe) and the framework (Blendrahme) with light outgoing opening is disclosed by DE 203 12 428U1.Supply line is directed into and is mainly arranged in lighting device terminal box below, arranges the transformer that can be connected on electrical network in this terminal box.The connection line of multiple lighting device is directed into central link position below at wall facing (ceramic tile, ceramic tile minute surface (Fliesenspiegel)), has installed low pressure source (transformer) at this link position place.
A kind of installation switch with apparatus socket, seesaw (Wippe) and lighting apparatus or-button is disclosed by DE 10 2,007 001 850 B3, wherein optical conductor is arranged in the dorsal part of seesaw and the lamp socket wherein arranged in apparatus socket with lamp, and the light of this lamp is mapped on the light entrance face of optical conductor.Seesaw, at erection switch or-button time preferably pointing on the side rib on direction, floor, seesaw has light outgoing opening, this light outgoing openings house light-emitting face of optical conductor, thus illuminate the floor be positioned at below assembled installation switch or-button.When seesaw being embodied as the installation switch with two diverse locations, lamp is only connected in the scram position of seesaw, and lamp keeps turning off on the on-position of seesaw.Although the preferably radiation on direction, floor of light outgoing opening, but also alternatively installation switch or-button can be rotated 180 ° of ground assemblings, thus make the radiation on ceiling direction of light outgoing opening, this color at ceiling is very shallow, preferred white time cause the reflection of incident light, thus achieve desired floor illumination.
Usually, for the concealed installation-LED light device, the especially ceiling lighting device that are adapted to be mounted within concealed installation-appliance case common on market, Problems existing is long-term safer fixing.For ceiling lighting device, the weight that illuminator is larger directly affects fixing mode and long-term behaviour thereof.
Summary of the invention
The object of the invention is to, a kind of concealed installation-LED light device, especially ceiling lighting device are provided, this concealed installation-LED light device can be assembled with mode simply and reliably and with long-term and method.
This object being realized for electric and mechanical connection concealed installation-LED light device, the especially ceiling lighting device in commercially common concealed installation-appliance case by a kind of according to the present invention, it has the concealed installation-apparatus socket having support plate, this concealed installation-apparatus socket has light-emitting device and feed to this light-emitting device, the converter comprising the linkage unit for 230V power line
● be wherein provided with for light-emitting component is fixed on concealed installation-apparatus socket
Additional buck plate,
● the plastic supporting pieces (Kunststoffspreizen) be wherein arranged on buck plate dorsal part is engaged in the corresponding accommodation section of support plate,
● wherein plastic supporting pieces has from the enterable boring in the front of buck plate,
● wherein realize plastic supporting pieces wedging (verspreizung) by means of the support component (Spreizmittel) inserted in these borings, the assembling bolt that preferably screws in and and then insert and stand on support plate, and
● wherein buck plate is furnished with guiding/stop device in its front, engaged in this guiding/keeper correspondingly arrange, the stop device be arranged on light-emitting component dorsal part.
Utilize the attainable advantage of the present invention particularly in: in final position not assembling device visible from outside fix light-emitting component.Assembling and disassembly design obtain very simple.The change that common support plate will carry out is not limited to the cutting (Ausstanzen) of the accommodation section for plastic supporting pieces.Light-emitting component can be " Heavy Weight " completely, and can not therefore jeopardize light-emitting component reliably and with long-term fixing.
Characterize the embodiment that the present invention is suitable in the dependent claims.
Accompanying drawing explanation
The present invention is described in detail below by embodiment illustrated in the accompanying drawings.Wherein:
Fig. 1 is concealed installation-apparatus socket/buck plate-configuration perspective view before assembly,
Fig. 23 is concealed installation-apparatus socket/buck plate-configurations, side view for illustration of fixed form,
Fig. 4 is the view in buck plate front,
Fig. 5 be have be arranged in its below, the posterior view of the buck plate of light-emitting component of assembling,
Fig. 6,7 is sectional views from different angles of buck plate/light-emitting component-configuration,
Fig. 8,9 is buck plate/light-emitting component-be configured in views in the different embodiments of light-emitting component,
Figure 10 is buck plate/light-emitting component-configuration perspective view before assembly,
Figure 11 is the sectional view of the concealed installation-LED light device be assemblied in ceiling.
Detailed description of the invention
Figure 1 illustrates concealed installation-apparatus socket/buck plate-configuration perspective view before assembly.Can find out, the concealed installation-LED light device of suggestion is made up of, as drawn in more detail by following explanation concealed installation-apparatus socket 3, additional buck plate 10 and light-emitting component.Concealed installation-apparatus socket 1 has for the linkage unit of 230V power line, converter (Konverter) and the control/adjusting device for controlling this converter.Converter feed, to light-emitting device 4, is medially arranged in this light-emitting device of formal construction of the LED on apparatus socket front with at least one.
Concealed installation-apparatus socket 1 has support plate (support ring) 5, lockhole-recess 6 that it is furnished with edge side in the general form, that be suitable for assembling, and the elastic supporting member for supporting optical member (Federspreizen) supported for assembling, wherein can identify the elastic supporting member for supporting optical member-manipulation bolt 7 used for this reason.Additionally, support plate is furnished with at least two accommodation sections 8 for plastic supporting pieces (Kunststoffspreizen) (reference number 12 see in Fig. 2 and 3).
The buck plate 10 being furnished with central recess 11 has already mentioned plastic supporting pieces above at its dorsal part, this plastic supporting pieces has the enterable boring 13 from the front of buck plate 10, support component (Spreizmittel) can insert in this boring, preferably assembling bolt 14 can screw in this boring.The plastic supporting pieces that the accommodation section 8/ that usual two opposite diagonals are arranged has boring 13 is just enough.In addition buck plate 10 has multiple guiding/stop device 15 in its front, and it is for fixing light-emitting component.Be provided with four guiding/stop devices 15 arranged with method in a symmetrical in the illustrated embodiment.Last multiple mark 16 is placed on the edge side on the front of buck plate 10, these marks simplify the assembling of light-emitting component on buck plate and indicate this as upper/lower positions, namely utilize this position light-emitting component can be laid (aufsetzen) on buck plate.
Show in figs 2 and 3 concealed installation-apparatus socket/buck plate-configuration, for illustration of the side view of fixed form.At this according to Fig. 2
-the plastic supporting pieces 12 of buck plate 10 is introduced in the accommodation section 8 of the support plate 5 of concealed installation-apparatus socket 3, and
-assembling bolt 14 is introduced in the boring 13 of plastic supporting pieces 12.According to Fig. 3, assembling bolt 14 is screwed in boring 13 completely, close according to usually known pin joint the arris that the outer wall of plastic supporting pieces 12 is pressed to accommodation section 8 by principle (Duebel-Prinzip) thus.Buck plate 10 is obtained desirably to be fixed on concealed installation-apparatus socket 3 thus.Fig. 2 and 3 additionally illustrates the guiding/stop device 15 be arranged on buck plate 10 front.
Figure 4 illustrates the view in the front of buck plate, this buck plate has been fixed on concealed installation-apparatus socket 3, and this is identified by the light-emitting device 4 be positioned in the middle part of central recess 11 on the other hand by the assembling bolt 14 screwed on the one hand.In addition Fig. 4 shows four guiding-stop devices 15 and four marks 16 be placed on method equally in a symmetrical manner on the arris of buck plate 10 arranged along the circle (the round A see dotted line represents) of " covered " with method in a symmetrical manner, and these marks give " anglec of rotation " that be first placed in by light-emitting component on buck plate 10.Then realize rotating predetermined angle (see arrow B), to be fixed on buck plate 10 by light-emitting component like this.
Figure 5 illustrates have be arranged in its below, the posterior view of the buck plate of light-emitting component of assembling.First the buck plate 10 and two plastic supporting pieces 12 that there is its opposite diagonals of holing 13 and arrange with its central recess 11 is identified.At edge side, light-emitting component 18 utilizes its framework 21 to exceed buck plate 10.Light-emitting component 18 has the light entrance face 20 with optical lens formal construction best at the illuminator of central recess 11 position.In the position of guiding/stop device 15, buck plate 10 has window, thus can be identified the stop device 22 worked together with the guiding/stop device 15 of buck plate 10 of its framework 21 in other words of light-emitting component 18 by window.
Show the sectional view from different angles of buck plate/light-emitting component-configuration in figs. 6 and 7.Can identify in both cases, (such as selling shape (the stiftfoermig)) stop device 22 be connected with the framework 21 of light-emitting component 18 engages (greifen) 15 times at (such as hook-type) guiding/stop device of buck plate 10, thus causes desired restraint.In the figure 7 additionally identifiable design go out light-emitting component 18, such as with the illuminator 19 be connected with framework 21 of acrylic compounds side's body (Acrylquader) formal construction.
Show buck plate/light-emitting component-be configured in view in the different embodiments of light-emitting component in figs. 8 and 9.Respectively illustrate at this, in which position rotated relative to buck plate 10, light-emitting component 18 is placed on buck plate 10.This position of rotation clearly illustrates by means of mark 16.The light-emitting component 18 of different designs can be placed on same buck plate when using same concealed installation-apparatus socket:
-according to Fig. 8 with the formal construction illuminator 19 of acrylic compounds body (Acrylkoerper), externally see that illuminator 19 is not surrounded by framework,
-surrounded by the framework 21 externally also in assembled position according to Fig. 9 illuminator 19.Concealed installation-LED light device anatomic shape can be comprised/is integrated in erection unit-group and/or switch-and socket group when using framework 21.
Installation step required when being below summarised in assembling concealed installation-LED light device:
1. be assemblied in concealed installation-appliance case when using elastic supporting member for supporting optical member and/or use set bolt by concealed installation-apparatus socket 3, this set bolt engages support plate 5 through lockhole-recess 6.
2. (realize expansion plastic supporting pieces thus) in boring 13 assemble buck plate 10 by plastic supporting pieces 12 to be introduced in accommodation section 8 and subsequently assembling bolt 14 is screwed in.
3. rotatably light-emitting component 18 is placed on buck plate 10 when considering mark 16, and subsequently light-emitting component 18 is rotated to final position, make guiding/stop device 15/ stop device 22 acting in conjunction in the meaning of bayonet coupling (Bajonett-Verschlusses) thus.Aptly, on final position, the slight and restraint that can again get loose is realized by guiding/stop device 15/ stop device 22.
Such as in order to the light-emitting device 4 of changing damage or the converter damaged, realize the dismounting of concealed installation-LED light device with order in contrast to this:
1. when considering mark 16 relative to buck plate 10 rotary luminous element 18, and subsequently light-emitting component 18 to be taken off from buck plate 10.
2. assembling bolt 14 is screwed out (therefore making plastic supporting pieces 12 again get loose), and subsequently buck plate 10 is taken off from support plate 5.
3. by the reset of elastic supporting member for supporting optical member and/or the back-out of set bolt that engaged by lockhole-recess, concealed installation-apparatus socket 3 is split out from concealed installation-appliance case where necessary.
Figure 10 illustrates buck plate/light-emitting component-configuration perspective view before assembly.In this imagination, concealed installation-appliance case is assemblied in ceiling 25 and concealed installation-apparatus socket 3 is assemblied in this concealed installation-appliance case.In addition imagine, with aforesaid mode and method, buck plate 10 is assemblied on the support plate 5 of concealed installation-apparatus socket.During last installation step, light-emitting component 18 to be placed on buck plate 10 with aforesaid mode and method and to rotate.Figure 10 illustrates following embodiment, namely light-emitting component outwards has visible framework hardly in this embodiment, and the illuminator 19 implemented with acrylic compounds side's bodily form formula in this embodiment optically appears at the most remarkable position (in den Vordergrund tritt) in the meaning of design element.
Figure 11 illustrates the sectional view of the concealed installation-LED light device 1 be assemblied in ceiling.What illustrate is, put into the concealed installation-appliance case 24 of ceiling 25, be assemblied in concealed installation-appliance case 24 comprise the 230V power line of connection concealed installation-apparatus socket 3, relative to the ceiling surface almost buck plate 10 of flush arrangement and light-emitting component 18 fixed thereon, wherein the illuminator 19 of light-emitting component 18 is again with the acrylic compounds side's body formal construction almost without frame.
Reference numerals list
1 concealed installation-LED light device
2 -
3 concealed installations-apparatus socket (comprise for the linkage unit of 230V power line, converter,
Control/adjusting device)
4 light-emitting devices (at least one LED)
5 support plates (support ring)
6 lockholes-recess
7 elastic supporting member for supporting optical member-manipulation bolt
8 for the accommodation section of plastic supporting pieces
9 -
10 buck plates
11 central recess
12 plastic supporting pieces
13 borings
14 assembling bolts
15 for forming the guiding/stop device of bayonet coupling
16 marks
17 -
18 light-emitting components
19 illuminators (acrylic compounds side's body)
20 light entrance faces (optical lens)
21 frameworks
22 for forming the stop device of bayonet coupling
23 -
24 concealed installations-appliance case
25 ceilings
The circle of A " covered "
B rotates relative to buck plate necessity to light-emitting component
Claims (7)
1. concealed installation-the LED light device (1) of the electric and mechanical connection on market in common concealed installation-appliance case (24), it has the concealed installation-apparatus socket (3) having support plate (5), described concealed installation-apparatus socket has light-emitting device (4) and feed to described light-emitting device (4), the converter comprising the linkage unit for 230V power line
The additional buck plate (10) being used for being fixed on by light-emitting component (18) on described concealed installation-apparatus socket (3) is wherein set,
The plastic supporting pieces (12) be wherein arranged on described buck plate (10) dorsal part is engaged in the corresponding accommodation section (8) of described support plate (5),
Wherein said plastic supporting pieces (12) has the enterable boring in the front (13) from described buck plate (10),
Wherein realize described plastic supporting pieces (12) wedging by means of the support component inserted in described boring (13) and and then insert and stand on described support plate (5), and
Wherein said buck plate (10) is furnished with guiding/stop device (15) in its front, engage in described guiding/stop device correspondingly arrange, the stop device (22) be arranged on described light-emitting component (18) dorsal part.
2. concealed installation-LED light device according to claim 1, it is characterized in that, the described guiding/stop device (15) of described buck plate (10) and the described stop device (22) of described light-emitting component (18) pass through rotated relative to described buck plate (10) by described light-emitting component (18) and and then be bonded with each other relative to the rotation of described concealed installation-apparatus socket (3) in the meaning of bayonet coupling.
3. concealed installation-LED light device according to claim 2, it is characterized in that, described buck plate (10) is furnished with mark (16), and described mark illustrates and is placed in rotatably on described buck plate (10) relative to final position by described light-emitting component (18).
4. according to concealed installation-LED light device in any one of the preceding claims wherein, it is characterized in that, described light-emitting component (18) has framework (21), and described stop device (22) is fixed on described framework (21).
5. concealed installation-the LED light device according to any one of claim 1-3, is characterized in that, described light-emitting component (18) has the illuminator (19) implemented with acrylic compounds side's bodily form formula.
6. concealed installation-LED light device according to claim 1, is characterized in that, described concealed installation-LED light device (1) is ceiling lighting device.
7. concealed installation-LED light device according to claim 1, is characterized in that, the support component inserted in described boring (13) is the assembling bolt (14) screwed in.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102010009608A DE102010009608A1 (en) | 2010-02-27 | 2010-02-27 | Flush-mounted LED light, especially ceiling light |
| DE102010009608.3 | 2010-02-27 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102168832A CN102168832A (en) | 2011-08-31 |
| CN102168832B true CN102168832B (en) | 2015-05-06 |
Family
ID=44022053
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110044052.5A Expired - Fee Related CN102168832B (en) | 2010-02-27 | 2011-02-18 | Built-in LED lighting device, in particular ceiling lighting device |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP2363634B1 (en) |
| CN (1) | CN102168832B (en) |
| DE (1) | DE102010009608A1 (en) |
| ES (1) | ES2439323T3 (en) |
| HK (1) | HK1157851A1 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104896429B (en) * | 2014-03-04 | 2019-08-20 | 欧司朗有限公司 | Mounting structure, lighting device and its installation method including the mounting structure |
| CN104089206B (en) * | 2014-07-28 | 2016-06-29 | 深圳市中电照明股份有限公司 | A kind of LED lamp cell cube and combination type LED lamp |
| CN105485636A (en) * | 2016-02-01 | 2016-04-13 | 厦门伟然科技有限公司 | Installation structure applied to lamp and installation method of installation structure |
| DE102016210673A1 (en) * | 2016-06-15 | 2017-12-21 | Osram Gmbh | Holding device for lamps in vehicle lights and vehicle light |
| CN110030500A (en) * | 2018-01-10 | 2019-07-19 | 朗德万斯公司 | LED modification lamp |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020163801A1 (en) * | 1995-09-22 | 2002-11-07 | Lsi Industries Inc. | Canopy luminaire |
| DE20313428U1 (en) * | 2003-08-29 | 2003-11-27 | Hoffmeister Leuchten Gmbh | Light, especially wall light, comprises mounting plate, circuit board with light diodes, light distribution panel and frame |
| DE10322177A1 (en) * | 2003-05-16 | 2004-12-02 | Ludwig Leuchten Kg | LED downlight |
| CN1880844A (en) * | 2005-04-08 | 2006-12-20 | 东芝照明技术株式会社 | Lamp |
| DE102007017329A1 (en) * | 2006-04-15 | 2007-10-25 | Gira Giersiepen Gmbh & Co. Kg | Light for building installation e.g. for orientation and signaling, has support element with housing wall facing front viewing face |
| EP1944784A2 (en) * | 2007-01-12 | 2008-07-16 | ABB PATENT GmbH | Electrical installation switch with illumination and a modular construction kit |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1979610U (en) * | 1967-12-05 | 1968-02-29 | Fritz Wauer Fa | LIGHTING ARRANGEMENT. |
| DE9301903U1 (en) * | 1993-02-11 | 1993-04-01 | FKB Feinwerktechnik und Kunststoffverarbeitungs-GmbH, 7238 Oberndorf | Flashlight |
| ATE400164T1 (en) * | 2002-04-02 | 2008-07-15 | Siteco Beleuchtungstech Gmbh | FASTENING SYSTEM FOR ELECTRICAL AND/OR MECHANICAL COMPONENTS OF A LAMP |
-
2010
- 2010-02-27 DE DE102010009608A patent/DE102010009608A1/en not_active Ceased
-
2011
- 2011-01-12 EP EP20110000169 patent/EP2363634B1/en active Active
- 2011-01-12 ES ES11000169T patent/ES2439323T3/en active Active
- 2011-02-18 CN CN201110044052.5A patent/CN102168832B/en not_active Expired - Fee Related
- 2011-11-11 HK HK11112242.8A patent/HK1157851A1/en not_active IP Right Cessation
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020163801A1 (en) * | 1995-09-22 | 2002-11-07 | Lsi Industries Inc. | Canopy luminaire |
| DE10322177A1 (en) * | 2003-05-16 | 2004-12-02 | Ludwig Leuchten Kg | LED downlight |
| DE20313428U1 (en) * | 2003-08-29 | 2003-11-27 | Hoffmeister Leuchten Gmbh | Light, especially wall light, comprises mounting plate, circuit board with light diodes, light distribution panel and frame |
| CN1880844A (en) * | 2005-04-08 | 2006-12-20 | 东芝照明技术株式会社 | Lamp |
| DE102007017329A1 (en) * | 2006-04-15 | 2007-10-25 | Gira Giersiepen Gmbh & Co. Kg | Light for building installation e.g. for orientation and signaling, has support element with housing wall facing front viewing face |
| EP1944784A2 (en) * | 2007-01-12 | 2008-07-16 | ABB PATENT GmbH | Electrical installation switch with illumination and a modular construction kit |
Also Published As
| Publication number | Publication date |
|---|---|
| ES2439323T3 (en) | 2014-01-22 |
| HK1157851A1 (en) | 2012-07-06 |
| EP2363634A2 (en) | 2011-09-07 |
| DE102010009608A1 (en) | 2011-09-01 |
| EP2363634B1 (en) | 2013-10-16 |
| CN102168832A (en) | 2011-08-31 |
| EP2363634A3 (en) | 2013-03-06 |
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Effective date of registration: 20190711 Address after: Baden, Switzerland Patentee after: ABB TECHNOLOGY LTD. Address before: Mannheim Patentee before: Asea Brown Boveri AB |
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