CN103791457A - LED (Light Emitting Diode) light emitting device casing, LED light emitting device and forming method thereof and lamp - Google Patents
LED (Light Emitting Diode) light emitting device casing, LED light emitting device and forming method thereof and lamp Download PDFInfo
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- CN103791457A CN103791457A CN201210426095.4A CN201210426095A CN103791457A CN 103791457 A CN103791457 A CN 103791457A CN 201210426095 A CN201210426095 A CN 201210426095A CN 103791457 A CN103791457 A CN 103791457A
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- housing
- circuit board
- led light
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- 238000000034 method Methods 0.000 title claims abstract description 30
- 238000005096 rolling process Methods 0.000 claims abstract description 12
- 238000005516 engineering process Methods 0.000 claims description 15
- 238000000465 moulding Methods 0.000 claims description 11
- 230000008569 process Effects 0.000 claims description 7
- 238000005452 bending Methods 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 description 4
- 230000004807 localization Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 208000002925 dental caries Diseases 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000001149 thermolysis Methods 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
The invention discloses an LED (Light Emitting Diode) light emitting device casing, an LED light emitting device and a forming method thereof and a lamp. The LED light emitting device casing (100) comprises a bottom wall (102) which is used for supporting a circuit board (10) of the LED light emitting device and lateral walls (101 and 103) which extends upward from the bottom wall; part of the lateral walls (101 and 103) are bent to limit at least one protruding portion (1011 and 1031) which protrudes inward; the protruding portion is used for fixing the circuit board (10) on the bottom wall (102). According to the LED light emitting device casing, the protruding portion is formed due to rolling of the lateral walls of the casing, so that fixing of the circuit board is achieved through a simple structure in a rapid and low cost mode.
Description
Technical field
The present invention relates to a kind of housing for LED light-emitting device, LED light-emitting device and formation method, light fixture.
Background technology
LED light fixture is as a kind of new light sources, due to its have efficiency high, photochromic pure, energy consumption is low, the life-span is long, reliability and durability, pollution-free, control the advantages such as flexible, thereby be widely applied.
In LED light fixture, comprise the circuit board that carries LED, thereby need circuit board to be fixed in the forming process of LED light fixture.In a kind of known LED line-type lamp fitting, in order fixedly to carry the circuit board of LED assembly, be by using screw that circuit board is fixed on housing mostly.
This known scheme has following shortcoming:
1, in order to form the screw hole of fixing use, the bottom of housing needs very thick (or at least need to be very thick in the position that forms screw hole), thereby causes the waste of case material, and then has increased cost; And make structure thick and heavy;
2, while fixing, need a large amount of screws, increased extra cost;
3, operator need to fix fixing that a lot of screws just can completing circuit plate, thereby assembling process complexity, and has increased cost of labor.
If for example, the spacing of 4 screws improper (spacing is larger), circuit board may bend in fixation procedure, thereby can not form good contacting with housing, thereby affects the radiating effect of circuit board, and may affect the performance of LED;
5, because needs are in housing and circuit board upper punch drilling screw hole, so greatly increased the defect rate of housing and circuit board.
Summary of the invention
The object of the invention is to overcome the defect of prior art, thereby a kind of housing for LED light-emitting device, LED light-emitting device and light fixture are provided, so that a kind of simple structure of fixing circuit board to be provided.
A kind of housing for LED light-emitting device is provided according to an aspect of the present invention, housing comprises the diapire of the circuit board for supporting LED light-emitting device and from the upwardly extending sidewall of diapire, it is characterized in that, sidewall sections ground is bending to limit at least one inwardly outstanding protuberance, and described at least one protuberance is for being fixed on diapire by circuit board.Thereby can realize the fixing of circuit board with a kind of simple structure, do not need to offer on housing and circuit board screw hole and mounting screw, thereby simplify technique, and save cost, the cost of screw and the cost of labor of mounting screw etc. of offering screw hole, also further reduced the poor products rate that may cause owing to offering screw hole.
Preferably, described at least one protuberance forms by rolling technology.Rolling technology moulding is quick, cost is low, thereby can be by the present invention's fixing circuit board rapidly, and reduces fixed cost.
Preferably, described at least one protuberance comprises first protuberance at the first edge that is respectively used to fixing circuit board and the second protuberance for the second edge of fixing circuit board, thereby can be by the fixing of the first and second edges realize fixing to circuit board in simple mode.
Preferably, described sidewall comprises the first side wall respect to one another and the second sidewall, and the first protuberance and the second protuberance are formed on respectively at least a portion of the first side wall and the second sidewall.By forming respectively the first protuberance and the second protuberance on the first side wall relative and the second sidewall, two of fixing circuit board edges by simple structure.
Preferably, housing is the housing that line style is extended, and the first side wall and the second sidewall line style ground extend.This situation is particularly conducive to and forms linear pattern light fixture, can make the circuit board fixing operation of linear pattern light fixture greatly simplify.
Preferably, described sidewall is curved wall, and described at least one protuberance is formed at least a portion of sidewall along the circumferential direction of sidewall.This situation is particularly conducive to formation circular luminaire, can make equally the fixing operation of circuit board greatly simplify.
Preferably, the height of protuberance is arranged to the clamping circuit board of predetermined pressure, thereby can make the fixing more firm of circuit board by predetermined pressure.
Preferably, described predetermined pressure is determined to be circuit board is stable in to the circuit structure that does not damage circuit board on the diapire of housing.Preferably, protuberance has semi-circular cross-section, not only facilitates the moulding of protuberance, and what between the protuberance of semi-circular cross-section and circuit board, form is that line contacts, reduce protuberance and press the area of circuit board, thereby avoid the damage to the circuit structure in circuit board.
Preferably, protuberance has rectangular cross section.This rectangular cross section can make protuberance have the larger area contacting with circuit board, thereby makes fixing more stable.
Preferably, housing is the radiator for LED light-emitting device, thereby makes housing can play the double action of protection and heat radiation.
According to a further aspect in the invention, provide a kind of LED light-emitting device, LED light-emitting device comprises according to aforesaid any housing for LED light-emitting device and is fixed on the circuit board on the diapire of housing.
According to another aspect of the invention, provide a kind of light fixture, it is characterized in that, light fixture comprises according to aforesaid LED light-emitting device.
A kind of method of the LED of being used to form light-emitting device is provided according to a further aspect in the invention.The method comprises the following steps: prepare thick failed part, thick failed part comprises the diapire of the circuit board for supporting LED light-emitting device and from the upwardly extending sidewall of diapire; On the Part I of sidewall, form the first protuberance; Circuit board is put on the diapire of housing; On the Part II that is different from Part I of sidewall, form the second protuberance, thereby be fixed on diapire by the first protuberance and the second protuberance circuit board.In this method, the first protuberance and the second protuberance successively form.Due to protuberance successively moulding, can after the first protuberance moulding, according to circumstances suitably adjust like this size and shape of the second protuberance, can realize the fixing of more suitable dynamics.
A kind of method of the ED of being used to form light-emitting device is provided according to a further aspect in the invention.The method comprises the following steps: prepare for the thick failed part of housing, thick failed part comprises the diapire of the circuit board for supporting LED light-emitting device and from the upwardly extending sidewall of diapire (101,103); Circuit board is put on diapire; Form the first protuberance at the Part I of sidewall, on the Part II that is different from Part I of sidewall, form the second protuberance, thereby be fixed on diapire by the first protuberance and the second protuberance circuit board simultaneously.In this method, the first protuberance and the second protuberance form simultaneously.Moulding when the first protuberance and the second protuberance, can make the fixation procedure of circuit board complete fast.
Preferably, according to any in above-mentioned method, thick failed part forms by extruding-out process moulding.First housing passed through extruding-out process moulding before forming protuberance, thereby obtained the structure of housing in simple mode.
Preferably, the first protuberance and the second protuberance form by rolling technology.
In sum, fixed structure of the present invention can be saved cost, is embodied in following aspect:
1, the present invention does not need housing to have blocked up bottom, that is, do not need in known technology for the bottom of thickening at least in part of screw hole is set, thereby on the one hand make structure lightweight, saved on the other hand the cost that forms the material of housing;
2, circuit board can be realized good fixing with simple structure by protuberance, and does not need screw, thereby has saved the cost of screw;
3, do not need housing that screw hole is set, thereby saved the running cost that screw hole is set;
4, protuberance carries out rolling technology by roll extrusion machine and forms, thereby can realize rapidly the fixing of circuit board, in known technology, need greatly to have saved the operating time the technology of fixing many screws, thereby saved cost of labor and time cost, and improved productivity ratio.
In addition, the present invention at least also has the following advantages:
1, circuit board can contact with housing better, thereby in the time that housing is used as radiator, can realize better radiating effect;
2, with screw, circuit board is fixed owing to not needing, thus product can not see in appearance screw, greatly improved the grade of the outward appearance of product and the product of raising.
Accompanying drawing explanation
Accompanying drawing forms the part of this description, for helping further to understand the present invention.Accompanying drawing illustrates embodiments of the invention, and is used for illustrating principle of the present invention together with description.Identical parts represent with identical label in the accompanying drawings.Shown in figure:
Fig. 1 has illustrated according to the housing for LED light-emitting device of the embodiment of the present invention for circuit board being fixed on to one of them step of carrying out on diapire with cross-sectional view;
Fig. 2 has illustrated according to the housing for LED light-emitting device of the embodiment of the present invention and circuit board has been fixed on to another step on diapire with cross-sectional view; And
Fig. 3 has illustrated according to the housing for LED light-emitting device of the embodiment of the present invention and circuit board has been fixed on to the another step on diapire with cross-sectional view.
The specific embodiment
Hereinafter with reference to the accompanying drawing that shows exemplary embodiment of the present, the present invention is described more fully.But the present invention can, with multiple multi-form enforcement, construct and should not only limit to exemplary embodiment set forth herein.Certainly, it is in order to make this announcement more comprehensively with complete that these exemplary embodiments are provided, and can fully pass on scope of the present invention to those skilled in the art.
Explain in detail with reference to the accompanying drawings the present invention below.
First,, with reference to Fig. 3, this Fig. 3 shows the housing 100 for LED light-emitting device of the embodiment of the present invention.For the object of example, Fig. 3 shows a kind of cross-sectional view of housing 100 of the LED of being used to form linear pattern light fixture.More specifically, the housing that housing 100 extends for line style, the cross section of this housing is as shown in Figure 3.This housing has diapire 102 and from the upwardly extending the first side wall 101 of diapire 102 and the second sidewall 103, and diapire 102 and the first and second sidewalls 101,103 limit the cavity 106 of the circuit board 10 for holding LED light-emitting device.The first side wall 101 and the second sidewall 103 arrange relative to one another, and the first side wall 101 and the second sidewall 103 line style ground extensions.
As shown in Figure 3, diapire 102 is for supporting the circuit board 10 of LED light-emitting device.Specifically, the first and second sidewalls 101,103 are partly bending to limit respectively at least one inwardly outstanding protuberance, for example, the first protuberance 1011 and the second protuberance 1031, circuit board 10 is fixed on diapire 102 by the first and second protuberances 1011,1031.As shown in by figure, housing 100 of the present invention has only just been realized the fixing of circuit board 10 by the first and second protuberances 1011,1031, this fixed structure is very simple, does not need housing and circuit board to offer screw hole and mounting screw, and has simplified fixation procedure.
Preferably, the height of the first and second protuberances 1011,1031 is arranged to can be with the first and second edges 11,12 of the clamping circuit board 10 of predetermined pressure, thereby can realize more firm fixing to circuit board 10.The selection of this predetermined pressure is not to damage circuit structure of circuit board 10 etc. as prerequisite.In order to prevent the clamping damage circuit board 10 of the first and second protuberances 1011,1031, circuit board 10 on the first and second fixing edges 11,12, circuit structure can not being set, thereby clamping can the damage at 1011,1031 pairs of the first and second edges 11,12 of the first and second protuberances is arranged on the circuit structure that is positioned at the interior location of circuit board 10 with respect to the first and second edges 11,12.
On housing 100 shown in Fig. 3, there is first protuberance 1011 at the first edge 11 that is respectively used to fixing circuit board 10 and the second protuberance 1031 for the second edge 12 of fixing circuit board 10.The first protuberance 1011 is respectively formed at least a portion of the first and second relative sidewalls 101,103 with the second protuberance 1031, thereby circuit board 10 is fixed on the diapire 102 of housing 100 by the first protuberance 1011 and the second protuberance 1031.Specifically, according to factors such as the sizes of light fixture, can be optionally along the first and second sidewalls 101, 103 length direction is only at the first and second sidewalls 101, in a part of length of 103, protuberance is set, or optionally along the first and second sidewalls 101, 103 length direction is at the first and second sidewalls 101, in 103 whole length, protuberance is set, thereby can meet the different fixed demands to circuit board on the one hand, on the other hand, only in a part of length of the first and second sidewalls, forming protuberance makes in the time forming large-scale light fixture, still can to form protuberance by less equipment, thereby reduce the requirement of the equipment to forming protuberance.
The first and second protuberances 1011,1031 can have semi-circular cross-section as illustrated in fig. 3, thereby can form by simple technique on the one hand the shape of this rule, on the other hand, have and between the first and second protuberances 1011,1031 of semi-circular cross-section and circuit board 10, form line and contact, make contact area less, force localization.Preferably, make the part that be not provided with circuit structure of this force localization on circuit board 10, thereby avoided 1011,1031 pairs of circuit boards 10 of the first and second protuberances to cause damage.In fact, though not expressly by force localization in the part that is not provided with circuit structure on circuit board 10, because the active area of active force is very little, also can greatly reduce the risk that circuit board is caused to damage.
Although Fig. 3 shows linear light fixture for the object of example, the present invention is not limited to this.For example, the present invention can also be applicable to circular luminaire, thereby housing can be formed as having curved wall, and protuberance can be formed at least a portion of sidewall along the circumferential direction of sidewall, thereby circuit board can be fixed on diapire by protuberance.
In addition, in LED light fixture, LED assembly and the circuit board for driving LED assembly will produce amount of heat, thereby LED assembly and circuit board thereof all need heat radiation with retention.In order to keep the performance of LED assembly, need to provide radiator for LED assembly.Preferably, the housing 100 of the embodiment of the present invention can be the radiator for LED light-emitting device, thereby housing 100 can play protective effect to inner circuit board 10 and the double action of thermolysis.
Preferably, the first protuberance 1011 on housing 100 and the second protuberance 1013 form by rolling technology.Rolling technology can make protuberance rapid shaping, has greatly improved operating efficiency and has reduced cost.
The first protuberance 1011 and the second protuberance 1013 successively form.Due to the first protuberance 1011 and the second protuberance 1013 moulding successively, can after the first protuberance 1011 moulding, according to circumstances suitably adjust like this size and shape of the second protuberance 1013, can realize the fixing of more suitable dynamics.Alternatively, the first protuberance 1011 and described the second protuberance 1013 form simultaneously.The one-step shaping of the first protuberance 1011 and the second protuberance 1013 can make to complete fixation procedure with fast speed.
Formation below with reference to Fig. 1-3 pair the first protuberance 1011 and the second protuberance 1013 is described in detail.
First, prepare the crude green body part (not shown) of housing 100, the crude green body part of this housing 100 comprises diapire 102 and from upwardly extending the first and second sidewalls 101,103 of diapire, still on the first and second sidewalls 101,103, is not also formed with respectively the first and second protuberances 1011,1031.The crude green body part of this housing 100 can be by moulding such as extruding-out process.
Then, as shown in Figure 1, at least a portion of the first side wall 101 of housing 100, for example form the first protuberance 1011 by rolling technology.
Then, as shown in Figure 2, the second edge 12 of circuit board 10 is inserted between the first protuberance 1011 and diapire 102 and and then circuit board is positioned on the diapire 102 of housing 100.In this process, may need, by the mode of inclination circuit board 10, circuit board 10 is put into housing 100.
Then, as shown in Figure 3, at least a portion of the second sidewall 103 of housing 100, for example form the second protuberance 1031 by rolling technology, thereby by the first protuberance 1011 and the second protuberance 1031, circuit board 10 is fixed on diapire 102.
But the first protuberance 1011 of housing of the present invention and the second protuberance 1031 can also form by diverse ways.For example, can first circuit board 10 be put into the described crude green body part of housing 100, then on the first and second sidewalls 101,103, for example form the first protuberance 1011 and the second protuberance 1031 by rolling technology simultaneously, thereby realize the fixing of circuit board 10 simultaneously.Preferably, the width of housing 100 arranges to such an extent that be greater than the width of circuit board 10, thereby can more easily circuit board 10 be put into housing 100.
According to embodiments of the invention, form protuberance by the first and second sidewalls 101,103 of roll extrusion housing 100, thereby can with a kind of fast, mode and realize fixing to circuit board 10 by simple structure cheaply.
These are only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.All any modifications of doing within the spirit and principles in the present invention, be equal to replacement, improvement etc., within protection scope of the present invention all should be included in.
List of reference characters:
100 housings
102 diapires
101 the first side walls
103 second sidewalls
1011 first protuberances
1031 second protuberances
106 cavitys
10 circuit boards
The first edge of 11 circuit boards
The second edge of 12 circuit boards.
Claims (17)
1. the housing for LED light-emitting device (100), described housing (100) comprises the diapire (102) of the circuit board (10) for supporting described LED light-emitting device and from the upwardly extending sidewall of diapire (101,103), it is characterized in that, described sidewall (101,103) is partly bending to limit inwardly outstanding at least one protuberance (1011,1031), and described at least one protuberance is for being fixed on described diapire (102) by described circuit board (10).
2. the housing for LED light-emitting device according to claim 1, is characterized in that, described at least one protuberance (1011,1031) forms by rolling technology.
3. the housing for LED light-emitting device according to claim 2, it is characterized in that, described at least one protuberance comprises first protuberance (1011) at the first edge (11) that is respectively used to fixing described circuit board (10) and the second protuberance (1031) for second edge (12) of fixing described circuit board (10).
4. the housing for LED light-emitting device according to claim 3, it is characterized in that, described sidewall comprises the first side wall respect to one another (101) and the second sidewall (103), and described the first protuberance (1011) and the second protuberance (1031) are respectively formed at least a portion of described the first side wall (101) and described the second sidewall (103).
5. the housing for LED light-emitting device according to claim 4, is characterized in that, the housing that described housing (100) extends for line style, and described the first side wall (101) and described the second sidewall (103) line style ground extend.
6. the housing for LED light-emitting device according to claim 1, is characterized in that, described sidewall is curved wall, and described at least one protuberance is formed at least a portion of described sidewall along the circumferential direction of described sidewall.
7. according to the housing for LED light-emitting device described in any one in claim 1 to 6, it is characterized in that, the height of described protuberance (1011,1031) is arranged to the clamping described circuit board of predetermined pressure (10).
8. the housing for LED light-emitting device according to claim 7, it is characterized in that, described predetermined pressure is determined to be the circuit structure that described circuit board (10) is stable on the described diapire of described housing (100) and does not damage described circuit board (10).
9. according to the housing for LED light-emitting device described in any one in claim 1 to 6, it is characterized in that, described protuberance (1011,1031) has semi-circular cross-section.
10. according to the housing for LED light-emitting device described in any one in claim 1 to 6, it is characterized in that, described protuberance (1011,1031) has rectangular cross section.
11. according to the housing for LED light-emitting device described in any one in claim 1 to 6, it is characterized in that, described housing (100) is radiator.
12. 1 kinds of LED light-emitting devices, it is characterized in that, described LED light-emitting device comprises according to the housing for LED light-emitting device described in any one in claim 1 to 11 (100) and is fixed on the circuit board (10) on the described diapire (102) of described housing (100).
13. 1 kinds of light fixtures, is characterized in that, described light fixture comprises LED light-emitting device according to claim 12.
14. 1 kinds are used to form the method for LED light-emitting device, it is characterized in that, said method comprising the steps of:
Prepare thick failed part, described thick failed part comprises the diapire (102) of the circuit board (10) for supporting described LED light-emitting device and from the upwardly extending sidewall of described diapire (101,103);
On the Part I of described sidewall (101), form the first protuberance (1011);
Described circuit board (10) is put on the diapire (102) of described housing;
On the Part II that is different from described Part I of described sidewall (101), form the second protuberance (1031), thereby be fixed on described diapire by described the first protuberance (1011) and the described circuit board of described the second protuberance (1031) (10).
15. 1 kinds are used to form the method for ED light-emitting device, it is characterized in that, said method comprising the steps of:
Prepare for the thick failed part of housing, described thick failed part comprises the diapire (102) of the circuit board (10) for supporting described LED light-emitting device and from the upwardly extending sidewall of described diapire (101,103);
Described circuit board (10) is put on described diapire (102);
Form the first protuberance (1011) at the Part I of described sidewall (101), on the Part II that is different from described Part I of described sidewall (101), form the second protuberance (1031), thereby be fixed on described diapire by described the first protuberance (1011) and the described circuit board of described the second protuberance (1031) (10) simultaneously.
16. according to the method described in claims 14 or 15, it is characterized in that, described thick failed part forms by extruding-out process moulding.
17. methods according to claim 16, is characterized in that, described the first protuberance (1011) and described the second protuberance (1031) form by rolling technology.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210426095.4A CN103791457A (en) | 2012-10-30 | 2012-10-30 | LED (Light Emitting Diode) light emitting device casing, LED light emitting device and forming method thereof and lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210426095.4A CN103791457A (en) | 2012-10-30 | 2012-10-30 | LED (Light Emitting Diode) light emitting device casing, LED light emitting device and forming method thereof and lamp |
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|---|---|
| CN103791457A true CN103791457A (en) | 2014-05-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210426095.4A Pending CN103791457A (en) | 2012-10-30 | 2012-10-30 | LED (Light Emitting Diode) light emitting device casing, LED light emitting device and forming method thereof and lamp |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090086492A1 (en) * | 2007-09-27 | 2009-04-02 | Osram Sylvania Inc | LED lamp with heat sink optic |
| CN201487840U (en) * | 2009-07-07 | 2010-05-26 | 西德企业有限公司 | Lamp shell structure |
| CN201964257U (en) * | 2011-01-28 | 2011-09-07 | 北京爱尔益地照明工程有限公司 | Light-emitting diode (LED) plant light supplementing lamp |
| US20120043884A1 (en) * | 2010-08-18 | 2012-02-23 | Zhongshan Weiqiang Technology Co., Ltd. | Led lamp tube |
| WO2012072449A1 (en) * | 2010-12-02 | 2012-06-07 | Osram Ag | Process for producing an led lamp and a corresponding led lamp |
-
2012
- 2012-10-30 CN CN201210426095.4A patent/CN103791457A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090086492A1 (en) * | 2007-09-27 | 2009-04-02 | Osram Sylvania Inc | LED lamp with heat sink optic |
| CN201487840U (en) * | 2009-07-07 | 2010-05-26 | 西德企业有限公司 | Lamp shell structure |
| US20120043884A1 (en) * | 2010-08-18 | 2012-02-23 | Zhongshan Weiqiang Technology Co., Ltd. | Led lamp tube |
| WO2012072449A1 (en) * | 2010-12-02 | 2012-06-07 | Osram Ag | Process for producing an led lamp and a corresponding led lamp |
| CN201964257U (en) * | 2011-01-28 | 2011-09-07 | 北京爱尔益地照明工程有限公司 | Light-emitting diode (LED) plant light supplementing lamp |
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