CN202546317U - LED light source component - Google Patents
LED light source component Download PDFInfo
- Publication number
- CN202546317U CN202546317U CN2011205652272U CN201120565227U CN202546317U CN 202546317 U CN202546317 U CN 202546317U CN 2011205652272 U CN2011205652272 U CN 2011205652272U CN 201120565227 U CN201120565227 U CN 201120565227U CN 202546317 U CN202546317 U CN 202546317U
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- light source
- led light
- support
- base
- face
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Abstract
The utility model discloses an LED (light-emitting diode) light source component which comprises a shell, a heat transfer board, a base, an electrical connecting piece connected with an external power supply, an LED light source board, a circuit board and a support, wherein the LED light source board, the circuit board and the support are fixed on the heat transfer board; the circuit board is arranged on the periphery of the LED light source board and electrically connected with the LED light source board; the light source board and the circuit board are fixed on the base through the heat transfer board; the electrical connecting piece is movably arranged on the base in a clamping manner so as to connect an electrical contact of the electrical connecting piece to a connector of the circuit board; the support is covered and buckled on the LED light source board; and the shell is covered and buckled on the support and fixed with the base. The LED light source component is packed wholly into an independent module and movably connected with a lamp body, thereby being easy in disassembling and replacing.
Description
Technical field
The utility model belongs to field of semiconductor illumination, relates to a kind of LED (light emitting diode) light source assembly.
Background technology
Along with the continuous progress of human lighting engineering, progressively bring into use LED in the industry as light source.LED has the following advantages and characteristics as a kind of novel green semiconductor light sources efficiently: luminous efficiency is high, the light fixture reflection loss is low, power and energy saving, low-voltage safety, directed luminously be beneficial to the lamp distribution design, do not have stroboscopic phenomenon, long perfomance life or the like.
Present most of producer only considers to satisfy aspect requirements such as LED light efficiency, brightness when design LED light fixture, and the maintenance during to the high-power LED lamp practical application is not considered.Because the LED light fixture generally all is to need the precision encapsulation, light source part and light fixture encapsulation itself is as a whole, so light source part or electric component break down, is difficult to accomplish maintenance fast or replacing.
Summary of the invention
In view of this, the utility model technical problem to be solved has provided a kind of led light source assembly, and led light source assembly overall package is a standalone module, and flexibly connects between the light fitting body, is easy to dismounting and change.
In order to solve the problems of the technologies described above, the utility model has disclosed a kind of led light source assembly, comprising: face-piece, heat transfer plate, base, the electrical fitting that is connected with external power source and be fixed on led light source plate, wiring board, the support on the heat transfer plate; Wherein, Said wiring board is laid in said led light source plate periphery and is electrically connected with said led light source plate; Said led light source plate and wiring board are fixed on the base through said heat transfer plate; Thereby said electrical fitting active card is contained in the electrical contact that makes said electrical fitting on the said base to be connected with the connector of said wiring board, and said support cover is buckled said led light source plate, and said face-piece cover fastens said support and fixes with base.
Further, the centre position of said wiring board has hollow structure, and the geomery with said led light source plate of said hollow structure adapts, and it is peripheral that said wiring board is set in the led light source plate.
Further, said led light source assembly also comprises: the reflector that centers on the solid brilliant position of said led light source plate at the bottom of the hollow cup; Said support has the hollow structure of the rim of a cup geomery of the said reflector of an adaptation, and said support cover is buckled the led light source plate and fixed with said heat transfer plate, and said reflector is leant out by the hollow structure of said support.
Further, said led light source assembly also comprises: the reflector that centers on the solid brilliant position of said led light source plate at the bottom of the hollow cup; Said face-piece have one adapt to the rim of a cup geomery of said reflector hollow structure, said face-piece cover fastens said support and fixing, screws through screw thread between said face-piece and the base to be connected.
Further, preset a guiding curved surface on the said base so that the screw thread between said face-piece and the base screws.
Further, said led light source assembly also comprises: spring; Wherein, leave a relative sliding space between said support and the face-piece, push said support and said heat sink assembly driving fit in the ring-shaped groove of said support thereby said spring places said sliding space and is fixed on.
Further, said diffuser cover is buckled the hollow structure of said face-piece and is clamped fixing with said face-piece.
Further, preset to opening on the said base, on the said heat transfer plate with the correspondence position of said directed opening on preset gib block so that heat transfer plate makes the electrical contact flexible connection of the connector and the electrical fitting of said wiring board when being connected with base.
Further, be provided with on the said face-piece and somely be suitable for pointing the depressed part of being affectedly bashful as the impetus that screws when connecting.
Compare the technique effect that the utility model obtained with existing scheme:
1) the led light source assembly overall package of the utility model is a standalone module, and flexibly connects between the light fitting body, is easy to dismounting and change.
2) helicitic texture between face-piece and the base has guaranteed to disassemble face-piece apace, thereby thereby the screw of fixed light source assembly and heat sink assembly on the support is twisted the quick dismounting and change of said light source assembly.
3) the electrical contact electrical activity ways of connecting of connector through wiring board and electrical fitting has guaranteed the dismounting and change that is easy to of light source assembly.
4) through mounting spring in the sliding space between support and the face-piece light source assembly is closely contacted with heat sink assembly, make that bascule is compact, more convenient to operate more, safety coefficient is higher.
5) leave one section relative sliding space between support and the face-piece; In said sliding space, spring is installed, spring can be pushed support through the reaction force of face-piece, thereby will outwards push up with the fixing heat transfer plate of support all the time; Heat transfer plate is closely contacted with heat sink assembly; The heat that led light source is produced can be led away through lamp radiator sooner, has fully prolonged the service life of led light source, and structure is compact, more convenient to operate more, safety coefficient is higher.
Description of drawings
Fig. 1 is the front schematic perspective view of the light source assembly of the utility model embodiment;
Fig. 2 is the back side schematic perspective view of the light source assembly of the utility model embodiment;
Fig. 3 is the decomposition texture sketch map of the light source assembly of the utility model embodiment;
Fig. 4 is the cross section structure sketch map of the light source assembly of the utility model embodiment;
Fig. 5 is the schematic perspective view of the high canopy lamp of LED of the suitable light source assembly of the utility model embodiment;
Fig. 6 is the decomposition texture sketch map of the high canopy lamp of LED of the suitable light source assembly of the utility model embodiment;
Fig. 7 is the decomposition texture sketch map of heat sink assembly of the high canopy lamp of LED of the suitable light source assembly of the utility model embodiment;
Fig. 8 is the cross section structure sketch map of heat sink assembly of the high canopy lamp of LED of the suitable light source assembly of the utility model embodiment;
Fig. 9 is the structural representation of reflection shield of the high canopy lamp of LED of the suitable light source assembly of the utility model embodiment;
Figure 10 is that the reflection shield of the high canopy lamp of LED of the suitable light source assembly of the utility model embodiment is strengthened the radiating effect sketch map.
The specific embodiment
Below will cooperate graphic and instance to specify the embodiment of the utility model, by this to the utility model how the application technology means implementation procedure that solves technical problem and reach technological effect can make much of and implement according to this.
The core idea of the utility model is a kind of led light source assembly, comprising: face-piece, heat transfer plate, base, electrical fitting and be fixed on led light source plate, wiring board, the support on the heat transfer plate; Wherein, Said wiring board is laid in said led light source plate periphery and is electrically connected with said led light source plate; Said electrical fitting is fixed on the said base; Said heat transfer plate places the electrical contact of the connector that makes said wiring board on the base and electrical fitting to flexibly connect, and said support cover is buckled said led light source plate, and said face-piece cover fastens said support and fixes with base.
Below with an embodiment light source assembly of the utility model is described.
Like Fig. 1,2, shown in 3 and 4, be front schematic perspective view, back side schematic perspective view, decomposition texture sketch map and the cross section structure sketch map of the light source assembly of the utility model embodiment.
Said light source assembly 1 comprises diffuser 1-1, face-piece 1-2, spring 1-3, support 1-4, reflector 1-5, wiring board 1-6, led light source plate 1-7, heat transfer plate 1-8, base 1-9, electrical fitting 1-10 and the fastening standard component of assisting, electric wire, conduction estersil etc.
Led light source plate 1-7 is by the moulding of aluminium base welding led chip, and led light source plate 1-7 is fixed on the heat transfer plate 1-8 through screw, smears conduction estersil between led light source plate 1-7 and the heat transfer plate 1-8 to reduce the thermal contact resistance between led light source plate 1-7 and the heat transfer plate 1-8; Upward wiring board 1-6, led light source plate 1-7 also together are fixed on the base 1-9 to base 1-9 thereby heat transfer plate 1-8 seat is put; Be welded with the electric wire that links to each other with driver 10 on the electrical fitting 1-10 and be provided with electrical contact; Thereby electrical fitting 1-10 active card is contained in base 1-9 and goes up the electrical contact that makes said electrical fitting 1-10 in the preset draw-in groove and go up the connector that welds with said wiring board 1-6 and be connected; Guaranteed that through connector and this electrical activity connected mode of electrical contact light source assembly is connected with conducting between the external power source and is easy to dismounting and change, when being electrically connected of dismounting light source assembly 1 only need with electrical fitting 1-10 from base 1-9 preset draw-in groove extract and can break off with the connector of wiring board 1-6.
Can on base 1-9, preset to opening, on the heat transfer plate 1-8 with the correspondence position of directed opening on preset gib block, be convenient to heat transfer plate 1-8 and sit to put can make between connector and the electrical fitting 1-10 to the base 1-9 and be electrically connected exactly.In actual use; Electrical fitting 1-10 is a printed on both sides pcb board; Wherein simultaneously weld the electric wire that links to each other with driver 10 and be convenient to external cabling, another side is preset pad, can add the connector that forms on electrical contact and the wiring board 1-6 behind the scolding tin and be electrically connected.On structure, can think that electrical fitting 1-10 constitutes the part that light source assembly 1 is electrically connected; Certainly; On structure, can think that also electrical fitting 1-10 is not the part of light source assembly 1, but the bridge that is electrically connected between light source assembly 1 and the fitting structure.
Wiring board 1-6 is laid in led light source plate 1-7 periphery and is fixed on the heat transfer plate 1-8 through screw, is electrically connected through the welding electric wire between wiring board 1-6 and the led light source plate 1-7; In actual use, wiring board 1-6 can be a loop configuration, thus wherein the position for the hollow structure that adapts with led light source plate 1-7 geomery so that wiring board 1-6 saves the space around being set in led light source plate 1-7.In actual use, wiring board 1-6 is the pcb board that is printed on one side.
Reflector 1-5 is bonded on the led light source plate 1-7 with heat-resistant adhesive, and around the solid brilliant position that is used for fixing the LED wafer, the reflecting surface high polish of its inwall fully reflects with the light that the LED wafer is sent at the bottom of the hollow cup of reflector 1-5; Support 1-4 has the hollow structure of the rim of a cup geomery of an adaptation reflector 1-5, and said support 1-4 cover is detained led light source plate 1-7 and fixed through screw with heat transfer plate 1-8, and reflector 1-5 is passed by the hollow structure of support 1-4.
Face-piece 1-2 also has the hollow structure of the rim of a cup geomery of an adaptation reflector 1-5; Face-piece 1-2 cover fastens support 1-4 and clamps fixing; Diffuser 1-1 cover is detained said hollow structure and is clamped with face-piece 1-2; Diffuser 1-1 reflects the light of reflector 1-5 reflection and forms even, soft irradiation light, thereby thereby screwing to be connected through screw thread between face-piece 1-2 and the base 1-9 is received into inside with support 1-4, reflector 1-5, wiring board 1-6, led light source plate 1-7, heat transfer plate 1-8 and forms a stand-alone product.Helicitic texture between face-piece 1-2 and the base 1-9 has guaranteed to disassemble face-piece 1-2 apace, twists with said light source assembly 1 quick dismounting and change thereby support 1-4 is gone up fixed light source assembly 1 and the screw of heat sink assembly 3.Can screw thread screws between face-piece 1-2 and the base 1-9 to make things convenient at preset one section guiding curved surface on the base 1-9.Simultaneously screw mode, can on face-piece 1-2, some depressed parts of being affectedly bashful that are suitable for pointing be set according to hand-type for matching thread, thereby as unscrewing and impetus when screwing face-piece.
Leave one section relative sliding space between support 1-4 and the face-piece 1-2; Spring 1-3 is installed in said sliding space; And be placed in the upward preset ring-shaped groove of support 1-4 spring 1-3 fixing; Spring 1-3 can push support 1-4 through the reaction force of face-piece 1-2, thereby will outwards push up with the fixing heat transfer plate 1-8 of support 1-4 all the time, and heat transfer plate 1-8 is closely contacted with heat sink assembly; The heat that led light source produces can be led away through lamp radiator sooner; Fully prolonged the service life of led light source, made that the movable connection structure between led light source assembly and heat sink assembly is compact more, guaranteed to flexibly connect do not influence down radiating effect, more convenient to operate, safety coefficient is higher.
In general; Light source assembly is not encapsulated as a product with light fixture as stand-alone product; Its structure generally is difficult to take into account the safe ready of electric wiring, the tight of quick and easy and radiator structure of fixed connection contacts, and the helicitic texture between the electrical contact of spring 1-3, electrical fitting 1-10, the connector of wiring board 1-6, face-piece 1-2 and the base 1-9 all is that light source assembly can be used as stand-alone product and realizes quick-replaceable basis.
The light source assembly of the utility model can be applied to multiple LED light fixture with counter structure; Said LED light fixture only need have corresponding electrical fitting 1-10; Can insert base 1-9 and go up preset draw-in groove and accomplish and be electrically connected, and said light source assembly can be installed from the fitting structure and just can be suitable for.
Below be that example describes with the high canopy lamp of LED, but the application scenarios of the led light source assembly of the utility model is not limited, can be suitable for as long as have the light fixture of the structure that the led light source assembly with the utility model adapts.
As illustrated in Figures 5 and 6, be respectively the schematic perspective view and the decomposition texture sketch map of the high canopy lamp of LED of the utility model embodiment.The high canopy lamp of said LED comprises: light source assembly 1, reflection shield 2, heat sink assembly 3, power pack 4, electric wire plug 5, hook 6, suspension rod 7, decorative bowl 8, mounting bracket 9, driver 10 and other auxiliary decorative element, safeguard structure, and structural connection and electrical connector etc.
Light source assembly 1 is the standalone module of an overall package; Reflection shield 2 is formed by fine aluminum alloy spinning, and reflective surface is made up of arc surface, can reflect the light of led light source assembly to greatest extent; Satisfy actual environment to illumination and brightness requirement; And make reflection ray shine the need field of illumination by required even angle, and eliminate dazzle, protection eyes, to light source assembly 1 the waterproof and dustproof protection is provided.Light source assembly 1 has the electric connector that is electrically connected and installs and fixes the hole; Reflection shield 2 tops are provided with fixed hole position; Light source assembly 1 can be fixed on the heat sink assembly 3 with reflection shield 2 through equally distributed screw efficiently and easily; The heat radiation that is beneficial to light source assembly 1 also can be electrically connected easily, also helps dismounting, the replacing of light source assembly 1 simultaneously.
Two block power supply boxes 4 fasten mutually and fix the power source cavity that the back forms a waterproof and dustproof through six screws; And be easy in air, distributing after the heat absorption that produces in the electric apparatus chamber; One end of the power pack 4 behind the fastening forms the annular slot of indent, and driver 10 places in the power source cavity and fixes, and power pack 4 is by the moulding of fine aluminum alloy die cast; Power pack 4 inside be provided with can with the mounting screw hole of many moneys power supply driver coupling, compatible with the driver of different manufacturers; Electric wire plug 5 is located at power pack 4 outsides and is fixed on the power pack 4 through helicitic texture, makes things convenient for wiring and protects electric wire not receive outside destroy.
The annular flange that has an evagination on the heat sink assembly 3 away from the opposite side of light source assembly 1 and reflection shield 2; Heat sink assembly 3 is installed in the annular slot of the indent that forms after said power pack 4 fastens through said annular flange; Thereby realize connecting the location fast and simply, also help dismounting, the replacing of heat sink assembly 3 simultaneously.
Shown in Fig. 7 and 8, be respectively the decomposition texture sketch map and the cross section structure sketch map of heat sink assembly of the high canopy lamp of LED of the utility model embodiment.Said heat sink assembly 3 comprises: light source fixed head 3-1, heat pipe 3-2, radiating fin 3-3, connecting screw rod 3-4, end cap 3-5 and the auxiliary screw that connects usefulness.
Light source fixed head 3-1 handles by the aluminium alloy plate forging forming and through plating nickel on surface, which is provided with a plurality of embedding grooves that are used for fixing the installation screwed hole of light source assembly 1, reflection shield 2 and connecting screw rod 3-4, a cable-through hole and many heat pipe 3-2.Can form a circle step surface near the circumference at the bottom of the bowl in the said bowl abdomen, the outer of light source fixed head 3-1 closely contacts with said step surface, is convenient to the heat that light source assembly 1 produces is delivered to radiating fin.And before light source fixed head 3-1 is installed; Earlier with fixing in the embedding groove of heat pipe 3-2 embedding light source fixed head 3-1 and with the scolding tin welding; Heat pipe 3-2 is formed through sintering by envelope circulating cooling liquid in the capillary copper tube; The face that heat pipe 3-2 is installed is closely contacted with step surface in the said bowl of abdomen, can further guarantee to derive fast heat.
Connecting screw rod 3-4 by bowl at the bottom of the relevant position of outer end probe at the bottom of bowl and contact with light source fixed head 3-1; Thereby the screw of holding external threading to be screwed on the light source fixed head 3-1 that probes into of connecting screw rod 3-4 is connected with light source fixed head 3-1; The other end of connecting screw rod 3-4 is attacked internal thread so that be connected through screw with end cap 3-5, so that at the bottom of end cap 3-5 is covered on bowl.End cap 3-5 is by the aluminium alloy compression casting moulding, and connecting screw rod 3-4 is processed by the carbon steel section bar.
As shown in Figure 9, be the structural representation of the reflection shield of the high canopy lamp of LED of the utility model embodiment.The bowl abdomen of the geomery of reflection shield 2 and heat sink assembly 3 adapts; Therefore reflection shield 2 essence also are one to have certain thickness bowl type structure; Be uniformly distributed with in the edge of the rim of a cup of reflection shield 2 and be provided with a plurality of small square hole 2-1; Each small square hole 2-1 corresponding the gap length between heat sink assembly 3 per two radiating fin 3-3, thereby form one by the heat dissipation channel of small square hole 2-1 to radiating fin to extraneous air, the focus that utilizes hot-air to rise emerges thermal cycle; Air can be directly from reflection shield 2 end faces upwards circulation carry out exchange heat with radiating fin 3-3, thereby strengthen radiating effect.
Radiating effect can be with reference to shown in Figure 10, strengthens the radiating effect sketch map for the reflection shield of the high canopy lamp of LED of the utility model embodiment, and arrow line is represented the flow direction of air among the figure.
Present embodiment is the indoor application light fixture, and good performance of heat dissipation and moulding are arranged, and the integral protection grade is not less than IP (water proof and dust proof grade) 20.The material of all exposed structures possesses certain corrosion-resistant, ageing resistace.
Above-mentioned explanation has illustrated and has described some preferred embodiments of the utility model; But as previously mentioned; Be to be understood that the utility model is not limited to the form that this paper discloses, should do not regard eliminating as, and can be used for various other combinations, modification and environment other embodiment; And can in utility model contemplated scope described herein, change through the technology or the knowledge of above-mentioned instruction or association area.And change that those skilled in the art carried out and variation do not break away from the spirit and the scope of the utility model, then all should be in the protection domain of the utility model accompanying claims.
Claims (9)
1. a led light source assembly is characterized in that, comprising: face-piece, heat transfer plate, base, the electrical fitting that is connected with external power source and be fixed on led light source plate, wiring board, the support on the heat transfer plate; Wherein, Said wiring board is laid in said led light source plate periphery and is electrically connected with said led light source plate; Said led light source plate and wiring board are fixed on the base through said heat transfer plate; Thereby said electrical fitting active card is contained in the electrical contact that makes said electrical fitting on the said base to be connected with the connector of said wiring board, and said support cover is buckled said led light source plate, and said face-piece cover fastens said support and fixes with base.
2. led light source assembly as claimed in claim 1 is characterized in that,
The centre position of said wiring board has hollow structure, and the geomery with said led light source plate of said hollow structure adapts, and it is peripheral that said wiring board is set in the led light source plate.
3. led light source assembly as claimed in claim 1 is characterized in that,
Said led light source assembly also comprises: the reflector that centers on the solid brilliant position of said led light source plate at the bottom of the hollow cup; Said support has the hollow structure of the rim of a cup geomery of the said reflector of an adaptation, and said support cover is buckled the led light source plate and fixed with said heat transfer plate, and said reflector is leant out by the hollow structure of said support.
4. led light source assembly as claimed in claim 1 is characterized in that,
Said led light source assembly also comprises: the reflector that centers on the solid brilliant position of said led light source plate at the bottom of the hollow cup; Said face-piece have one adapt to the rim of a cup geomery of said reflector hollow structure, said face-piece cover fastens said support and fixing, screws through screw thread between said face-piece and the base to be connected.
5. led light source assembly as claimed in claim 4 is characterized in that,
A preset guiding curved surface is so that the screw thread between said face-piece and the base screws on the said base.
6. like claim 1 or 3 or 4 described led light source assemblies, it is characterized in that,
Said led light source assembly also comprises: spring; Wherein, leave a relative sliding space between said support and the face-piece, push said support and said heat sink assembly driving fit in the ring-shaped groove of said support thereby said spring places said sliding space and is fixed on.
7. led light source assembly as claimed in claim 6 is characterized in that,
The diffuser cover is buckled the hollow structure of said face-piece and is clamped fixing with said face-piece.
8. led light source assembly as claimed in claim 1 is characterized in that,
Preset to opening on the said base, on the said heat transfer plate with the correspondence position of said directed opening on preset gib block so that heat transfer plate makes the electrical contact flexible connection of the connector and the electrical fitting of said wiring board when being connected with base.
9. led light source assembly as claimed in claim 1 is characterized in that,
Be provided with on the said face-piece and somely be suitable for pointing the depressed part of being affectedly bashful as the impetus that screws when connecting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205652272U CN202546317U (en) | 2011-12-29 | 2011-12-29 | LED light source component |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205652272U CN202546317U (en) | 2011-12-29 | 2011-12-29 | LED light source component |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202546317U true CN202546317U (en) | 2012-11-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205652272U Expired - Lifetime CN202546317U (en) | 2011-12-29 | 2011-12-29 | LED light source component |
Country Status (1)
| Country | Link |
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| CN (1) | CN202546317U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103196071A (en) * | 2013-04-28 | 2013-07-10 | 李惠远 | Rotatably adjustable light emitting diode (LED) working lamp |
-
2011
- 2011-12-29 CN CN2011205652272U patent/CN202546317U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103196071A (en) * | 2013-04-28 | 2013-07-10 | 李惠远 | Rotatably adjustable light emitting diode (LED) working lamp |
| CN103196071B (en) * | 2013-04-28 | 2015-01-21 | 李惠远 | Rotatably adjustable light emitting diode (LED) working lamp |
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Legal Events
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| C14 | Grant of patent or utility model | ||
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Effective date of registration: 20191230 Address after: No.512, Xixin building, No.7, linqionggang East 1st Road, Lhasa Economic and Technological Development Zone, Lhasa City, Tibet Autonomous Region, 850000 Patentee after: Tibet Langming Mechanical and Electrical Technology Co., Ltd. Address before: 100176, No. two, No. 28, Hai Lu, Beijing economic and Technological Development Zone, Beijing, Daxing District Patentee before: Beijing Lampearl Photoelectric Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: No.512, Xixin building, No.7, linqionggang East 1st Road, Lhasa Economic and Technological Development Zone, Lhasa City, Tibet Autonomous Region, 850000 Patentee after: Langzhicheng Technology Co., Ltd Address before: No.512, Xixin building, No.7, linqionggang East 1st Road, Lhasa Economic and Technological Development Zone, Lhasa City, Tibet Autonomous Region, 850000 Patentee before: Tibet Langming Mechanical and Electrical Technology Co.,Ltd. |
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| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121121 |