CN105889820B - A kind of Telescopic LED underground lamp - Google Patents
A kind of Telescopic LED underground lamp Download PDFInfo
- Publication number
- CN105889820B CN105889820B CN201610311591.3A CN201610311591A CN105889820B CN 105889820 B CN105889820 B CN 105889820B CN 201610311591 A CN201610311591 A CN 201610311591A CN 105889820 B CN105889820 B CN 105889820B
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- Prior art keywords
- sleeve
- fixed
- madial wall
- annular
- ring block
- Prior art date
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- 238000007789 sealing Methods 0.000 claims abstract description 23
- 238000005192 partition Methods 0.000 claims description 15
- 241000258971 Brachiopoda Species 0.000 claims description 14
- 239000007787 solid Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 9
- 238000005516 engineering process Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- F21S8/03—Lighting devices intended for fixed installation of surface-mounted type
- F21S8/032—Lighting devices intended for fixed installation of surface-mounted type the surface being a floor or like ground surface, e.g. pavement
-
- 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
- F21V15/00—Protecting lighting devices from damage
- F21V15/04—Resilient mountings, e.g. shock absorbers
-
- 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
- F21V17/00—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
- F21V17/10—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening
- F21V17/104—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening using feather joints, e.g. tongues and grooves, with or without friction
-
- 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
- F21V19/00—Fastening of light sources or lamp holders
- F21V19/001—Fastening of light sources or lamp holders the light sources being semiconductors devices, e.g. LEDs
-
- 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
- F21V29/50—Cooling arrangements
- F21V29/502—Cooling arrangements characterised by the adaptation for cooling of specific components
- F21V29/503—Cooling arrangements characterised by the adaptation for cooling of specific components of light sources
-
- 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
- F21V29/50—Cooling arrangements
- F21V29/56—Cooling arrangements using liquid coolants
-
- 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
- F21V31/00—Gas-tight or water-tight arrangements
- F21V31/005—Sealing arrangements therefor
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
The invention discloses a kind of Telescopic LED underground lamps, including waterproof shell, the bottom outside wall of the waterproof shell is inserted with ring block, there is water-flowing trough on the madial wall of ring block, sealing ring is clamped between the lateral wall of waterproof shell at the madial wall of the ring block of the upper and lower part of water-flowing trough, the bottom surface of ring block and the bottom surface of waterproof shell are fixed in bottom support plate, there is the edge of bottom support plate the annular upwardly extended to extend protrusion, ring block sleeve extends in annular in protrusion, the bottom surface of bottom support plate is fixed with multiple buffer springs, the bottom end of buffer spring is fixed on the top surface of lifting plate；The top surface on ground has the ladder cavity extended downwardly, and the top of ladder cavity is major diameter portion, and the lower part of ladder cavity is minor diameter；Its sealing effect is good, meanwhile, it is exchanged heat by aqueous by accumulating aqueous in water-flowing trough, good effect of heat exchange, and also it can carry out being promoted up and down, meet user's requirement.
Description
Technical field：
The present invention relates to LED light manufacturing technology field, more specifically to a kind of Telescopic LED underground lamp.
Background technology：
Existing LED underground lamp is usually directly anchored in ground, however it radiates mainly by ground heat conduction, however
Ground heat-conducting effect is limited, and LED lamp is easily damaged.
Meanwhile existing LED underground lamp is typically mounted on ground and cannot achieve oscilaltion so that it can not expire
The requirement of sufficient user.
Invention content：
The purpose of the present invention is overcome the deficiencies of the prior art and provide a kind of Telescopic LED underground lamp, its sealing effect
It is good, meanwhile, it is exchanged heat by aqueous by accumulating aqueous in water-flowing trough, good effect of heat exchange, and also it can carry out carrying up and down
It rises, meets user's requirement.
The present invention solve the technical problem scheme be：
The bottom outside wall of a kind of Telescopic LED underground lamp, including waterproof shell, the waterproof shell is inserted with annular
Block, has water-flowing trough on the madial wall of ring block, at the madial wall of the ring block of the upper and lower part of water-flowing trough and waterproof shell
Lateral wall between be clamped with sealing ring, the bottom surface of ring block and the bottom surface of waterproof shell are fixed in bottom support plate, bottom
There is the edge of support plate the annular upwardly extended to extend protrusion, and ring block sleeve is in annular extends protrusion, bottom support plate
Bottom surface be fixed with multiple buffer springs, the bottom end of buffer spring is fixed on the top surface of lifting plate；
The top surface on ground has the ladder cavity extended downwardly, and the top of ladder cavity is major diameter portion, ladder cavity
Lower part is minor diameter, and the top surface of minor diameter is fixed with partition board, and the top surface of partition board is fixed with fixes sleeve, fixes sleeve sleeve
In major diameter portion, the outer wall of fixes sleeve is fixed on the madial wall of major diameter portion, and lifting cylinder is fixed on the bottom surface of partition board,
Lifting cylinder is in minor diameter, and the push rod of lifting cylinder stretches out partition board and is fixed on lifting plate upwards, lifting plate, waterproof
In fixes sleeve, the lateral wall of bottom support plate is close to the madial wall of fixes sleeve for shell and the equal sleeve of bottom support plate；
The inside of the waterproof shell is stairstepping cavity, and the top of stairstepping cavity is enlarged diameter section slot, stairstepping chamber
The lower part of body is reduced diameter section slot, and small diameter lamp shell sleeve is in reduced diameter section slot, and end cap sleeve is in enlarged diameter section slot, end
Lid is bolted to connection on the top end face of small diameter lamp shell, and LED light mainboard, LED light are equipped in small diameter lamp shell
Multiple LED lamps are fixed in mainboard top surface, and the middle part of end cap is implosion guard plate, and LED lamp is against implosion guard plate；
The lateral wall of the small diameter lamp shell is close on the madial wall of reduced diameter section slot；
There is annular ring, LED light mainboard are pressed against on the madial wall of the small diameter lamp shell on the top surface of annular ring,
The top surface edge of LED light mainboard is fixed with annular resilient collar, and annular resilient collar is clamped between LED light mainboard and end cap；
The bottom surface of the LED light mainboard is fixed with heat sink, and heat sink extends downwardly annular ring, and the lower end of heat sink is spirally connected
There are annular heat conducting sleeve, the lateral wall of annular heat conducting sleeve to be close on the madial wall of small diameter lamp shell.
There is limbers on the lateral wall of the ring block, there is gap between ring block and the madial wall of fixes sleeve.
The first sealing ring is nested on the lateral wall of the end cap, the first sealing ring elasticity is pressed against the interior of enlarged diameter section slot
On side wall.
The second sealing ring is nested on the lateral wall of the lifting plate, the second sealing ring elasticity is pressed against the interior of fixes sleeve
On side wall.
Guide pad is fixed on the top surface of the partition board, in fixes sleeve, the middle part of guide pad has guide pad sleeve
It is vertically directed hole, the push rod sleeve of lifting cylinder is in being vertically directed hole.
The connecting line of the LED light mainboard sequentially passes through the bottom of waterproof shell, bottom support plate, lifting plate, guide pad
And it stretches into the minor diameter of ladder cavity.
The present invention protrusion effect be：
Compared with prior art, its sealing effect is good, meanwhile, it is exchanged heat by aqueous by accumulating aqueous in water-flowing trough,
Its good effect of heat exchange, and it can carry out being promoted up and down, meet user's requirement.
Description of the drawings：
Fig. 1 is the structural schematic diagram of the present invention.
Specific implementation mode：
Embodiment, as shown in Figure 1, a kind of Telescopic LED underground lamp, including waterproof shell 10, the waterproof shell 10
Bottom outside wall is inserted with ring block 11, has water-flowing trough 12, the upper and lower part of water-flowing trough 12 on the madial wall of ring block 11
Ring block 11 madial wall at be clamped with sealing ring 1 between the lateral wall of waterproof shell 10, the bottom surface of ring block 11 and anti-
The bottom surface of water hull body 10 is fixed in bottom support plate 20, and it is convex that there is the edge of bottom support plate 20 annular upwardly extended to extend
21 are played, for 11 sleeve of ring block in annular extends protrusion 21, the bottom surface of bottom support plate 20 is fixed with multiple buffer springs 22, delays
The bottom end for rushing spring 22 is fixed on the top surface of lifting plate 30；
The top surface on ground 100 has the ladder cavity 101 extended downwardly, and the top of ladder cavity 101 is major diameter portion, rank
The lower part of terraced cavity 101 is minor diameter, and the top surface of minor diameter is fixed with partition board 102, and the top surface of partition board 102 is fixed with fixation
Sleeve 103, for 103 sleeve of fixes sleeve in major diameter portion, the outer wall of fixes sleeve 103 is fixed on the madial wall of major diameter portion
On, lifting cylinder 104 is fixed on the bottom surface of partition board 102, and lifting cylinder 104 is in minor diameter, the push rod of lifting cylinder 104
Partition board 102 is stretched out upwards and is fixed on lifting plate 30, and lifting plate 30, waterproof shell 10 and 20 equal sleeve of bottom support plate are solid
Determine in sleeve 103, the lateral wall of bottom support plate 20 is close to the madial wall of fixes sleeve 103；
The inside of the waterproof shell 10 is stairstepping cavity 13, and the top of stairstepping cavity 13 is enlarged diameter section slot 131,
The lower part of stairstepping cavity 13 is reduced diameter section slot 132, and 14 sleeve of small diameter lamp shell is in reduced diameter section slot 132, end cap 15
Sleeve is in enlarged diameter section slot 131, and end cap 15 is bolted to connection on the top end face of small diameter lamp shell 14, minor diameter
LED light mainboard 16 is equipped in lamp housing 14, multiple LED lamps 161 are fixed in 16 top surface of LED light mainboard, and the middle part of end cap 15 is anti-
Quick-fried glass plate 151, LED lamp 161 is against implosion guard plate 151.
Further, there is limbers 111, ring block 11 and fixes sleeve 103 on the lateral wall of the ring block 11
Madial wall between have gap 109.
Further, the first sealing ring 2 is nested on the lateral wall of the end cap 15,2 elasticity of the first sealing ring is pressed against
On the madial wall of enlarged diameter section slot 132.
Further, the lateral wall of the small diameter lamp shell 14 is close on the madial wall of reduced diameter section slot 132.
Further, there is annular ring 141, LED light mainboard 16 to be pressed against on the madial wall of the small diameter lamp shell 14
On the top surface of annular ring 141, the top surface edge of LED light mainboard 16 is fixed with annular resilient collar 162, and annular resilient collar 162 presss from both sides
It holds between LED light mainboard 16 and end cap 15.
Further, the bottom surface of the LED light mainboard 16 is fixed with heat sink 163, and heat sink 163 extends downwardly annular
Circle 141, the lower end of heat sink 163 is bolted with annular heat conducting sleeve 164, and the lateral wall of annular heat conducting sleeve 164 is close to minor diameter lamp housing
On the madial wall of body 14.
Further, the second sealing ring 3,3 elasticity pressure of the second sealing ring are nested on the lateral wall of the lifting plate 30
On the madial wall for leaning against fixes sleeve 103.
Further, guide pad 105 is fixed on the top surface of the partition board 102,105 sleeve of guide pad is in fixes sleeve
In 103, the middle part of guide pad 105, which has, is vertically directed hole 106, and the push rod sleeve of lifting cylinder 104 is being vertically directed hole 106
In.
Further, the connecting line of the LED light mainboard 16 sequentially passes through the bottom of waterproof shell 10, bottom support plate
20, it lifting plate 30, guide pad 105 and stretches into the minor diameter of ladder cavity 101.
In this implementation, aqueous is entered in limbers 111 by gap 109 and is entered in water-flowing trough 12, and water-flowing trough 12 is passed through
In aqueous exchange heat with waterproof shell 10, realize waterproof shell 10 inside structure temperature decline, meet LED lamp 161
Temperature using need.
And pushed by the push rod of lifting cylinder 104, the members uplift of waterproof shell 10 and its inside may be implemented, meet
The needs of user, wherein sealing effect is realized by sealing ring 1, the first sealing ring 2 and the second sealing ring 3, ensures that it is normal
Operation.
And air pump, control host etc. are also equipped in the minor diameter of the lower part of ladder cavity 101 so as to being promoted
Cylinder 104 provides operation gas and controls lifting cylinder 104, and the connecting line of LED light mainboard 16, the connecting line for controlling host are worn
It is stretched at the general supply being equipped with above or below ground 100 after crossing minor diameter, realizes power supply.
Finally, embodiment of above is merely to illustrate the present invention, and not limitation of the present invention, related technical field
Those of ordinary skill can also make a variety of changes and modification without departing from the spirit and scope of the present invention, therefore
All equivalent technical solutions also belong to scope of the invention, and scope of patent protection of the invention should be defined by the claims.
Claims (6)
1. a kind of Telescopic LED underground lamp, including waterproof shell (10), it is characterised in that：The bottom of the waterproof shell (10)
Lateral wall is inserted with ring block (11), has water-flowing trough (12) on the madial wall of ring block (11), the top of water-flowing trough (12) and
Sealing ring (1), ring block are clamped between the lateral wall of waterproof shell (10) at the madial wall of the ring block (11) of lower part
(11) bottom surface of bottom surface and waterproof shell (10) is fixed in bottom support plate (20), and the edge of bottom support plate (20) has
The annular upwardly extended extends raised (21), and ring block (11) sleeve is in annular extends raised (21), bottom support plate (20)
Bottom surface be fixed with multiple buffer springs (22), the bottom end of buffer spring (22) is fixed on the top surface of lifting plate (30)；
The top surface on ground (100) has the ladder cavity (101) extended downwardly, and the top of ladder cavity (101) is major diameter portion,
The lower part of ladder cavity (101) is minor diameter, and the top surface of minor diameter is fixed with partition board (102), and the top surface of partition board (102) is solid
Surely there is fixes sleeve (103), in major diameter portion, the outer wall of fixes sleeve (103) is fixed on greatly directly fixes sleeve (103) sleeve
On the madial wall in diameter portion, lifting cylinder (104) is fixed on the bottom surface of partition board (102), and lifting cylinder (104) is in minor diameter
In, the push rod of lifting cylinder (104) stretches out partition board (102) and is fixed on lifting plate (30) upwards, lifting plate (30), waterproof cover
In fixes sleeve (103), the lateral wall of bottom support plate (20) is close to fix for body (10) and bottom support plate (20) sleeve
The madial wall of sleeve (103)；
The inside of the waterproof shell (10) is stairstepping cavity (13), and the top of stairstepping cavity (13) is enlarged diameter section slot
(131), the lower part of stairstepping cavity (13) is reduced diameter section slot (132), and small diameter lamp shell (14) sleeve is in reduced diameter section slot
(132) in, in enlarged diameter section slot (131), end cap (15) is bolted to connection in minor diameter lamp housing end cap (15) sleeve
On the top end face of body (14), LED light mainboard (16) is equipped in small diameter lamp shell (14), LED light mainboard (16) top surface is fixed more
The middle part of a LED lamp (161), end cap (15) is implosion guard plate (151), the opposite implosion guard plate of LED lamp (161)
(151)；
The lateral wall of the small diameter lamp shell (14) is close on the madial wall of reduced diameter section slot (132)；
There is annular ring (141), LED light mainboard (16) to be pressed against annular ring on the madial wall of the small diameter lamp shell (14)
(141) on top surface, the top surface edge of LED light mainboard (16) is fixed with annular resilient collar (162), annular resilient collar (162) folder
It holds between LED light mainboard (16) and end cap (15)；
The bottom surface of the LED light mainboard (16) is fixed with heat sink (163), and heat sink (163) extends downwardly annular ring (141),
The lower end of heat sink (163) is bolted with annular heat conducting sleeve (164), and the lateral wall of annular heat conducting sleeve (164) is close to minor diameter lamp housing
On the madial wall of body (14).
2. a kind of Telescopic LED underground lamp according to claim 1, it is characterised in that：The outside of the ring block (11)
There are limbers (111) on wall, there are gap (109) between ring block (11) and the madial wall of fixes sleeve (103).
3. a kind of Telescopic LED underground lamp according to claim 2, it is characterised in that：The lateral wall of the end cap (15)
On be nested with the first sealing ring (2), the first sealing ring (2) elasticity is pressed against on the madial wall of enlarged diameter section slot (132).
4. a kind of Telescopic LED underground lamp according to claim 1, it is characterised in that：The outside of the lifting plate (30)
The second sealing ring (3) is nested on wall, the second sealing ring (3) elasticity is pressed against on the madial wall of fixes sleeve (103).
5. a kind of Telescopic LED underground lamp according to claim 4, it is characterised in that：On the top surface of the partition board (102)
It is fixed with guide pad (105), in fixes sleeve (103), the middle part of guide pad (105) has vertically guide pad (105) sleeve
Pilot hole (106), the push rod sleeve of lifting cylinder (104) is in being vertically directed hole (106).
6. a kind of Telescopic LED underground lamp according to claim 5, it is characterised in that：The company of the LED light mainboard (16)
Wiring sequentially passes through the bottom of waterproof shell (10), bottom support plate (20), lifting plate (30), guide pad (105) and stretches into rank
In the minor diameter of terraced cavity (101).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610311591.3A CN105889820B (en) | 2016-05-11 | 2016-05-11 | A kind of Telescopic LED underground lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610311591.3A CN105889820B (en) | 2016-05-11 | 2016-05-11 | A kind of Telescopic LED underground lamp |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105889820A CN105889820A (en) | 2016-08-24 |
| CN105889820B true CN105889820B (en) | 2018-09-07 |
Family
ID=56702678
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610311591.3A Active CN105889820B (en) | 2016-05-11 | 2016-05-11 | A kind of Telescopic LED underground lamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105889820B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107314284B (en) * | 2017-06-29 | 2020-05-05 | 东莞市闻誉实业有限公司 | Double-lamp-plate lighting device |
| CN107559680B (en) * | 2017-09-26 | 2020-02-07 | 东莞市闻誉实业有限公司 | Lifting umbrella type lighting lamp |
| CN108548131B (en) * | 2018-04-11 | 2020-04-28 | 绍兴康赛浦照明电器有限公司 | Heat dissipation LED lamp |
| CN108488712A (en) * | 2018-06-29 | 2018-09-04 | 王帅涵 | A kind of extension type underground lamp |
| CN109899722B (en) * | 2019-03-05 | 2021-03-26 | 王茜 | LED lamp convenient to dismantle installation |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202675084U (en) * | 2012-07-27 | 2013-01-16 | 四川西德光能科技有限公司 | LED (Light Emitting Diode) buried lamp with sealing performance |
| CN203336373U (en) * | 2013-07-10 | 2013-12-11 | 湖南蓝绿光电科技有限公司 | LED underground light with lifting device |
| CN204593111U (en) * | 2015-04-29 | 2015-08-26 | 张艳艳 | A kind of water-cooling type height optically focused rectangle asymmetric light distribution LED underground lamp |
| CN104964215A (en) * | 2015-07-30 | 2015-10-07 | 苏州汉瑞森光电科技有限公司 | Embedded LED wall lamp |
| CN105240787B (en) * | 2015-11-25 | 2017-12-19 | 四川能士达节能技术有限公司 | A kind of LED underground lamp |
-
2016
- 2016-05-11 CN CN201610311591.3A patent/CN105889820B/en active Active
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|---|---|
| CN105889820A (en) | 2016-08-24 |
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Effective date of registration: 20180725 Address after: 317500 1 happy five road, Ze Guo Town, Wenling City, Taizhou, Zhejiang Applicant after: Taizhou Feng Da Robot Technology Co., Ltd. Address before: 523000 productivity building 406, high tech Industrial Development Zone, Songshan Lake, Dongguan, Guangdong Applicant before: Dongguan Lianzhou Intellectual Property Operation Management Co.,Ltd. |
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