CN107845562B - Anode structure for short-arc mercury xenon lamp - Google Patents
Anode structure for short-arc mercury xenon lamp Download PDFInfo
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- CN107845562B CN107845562B CN201711286594.7A CN201711286594A CN107845562B CN 107845562 B CN107845562 B CN 107845562B CN 201711286594 A CN201711286594 A CN 201711286594A CN 107845562 B CN107845562 B CN 107845562B
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- heat dissipation
- round
- annular
- annular heat
- groove
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- VSQYNPJPULBZKU-UHFFFAOYSA-N mercury xenon Chemical compound [Xe].[Hg] VSQYNPJPULBZKU-UHFFFAOYSA-N 0.000 title claims abstract description 25
- 230000017525 heat dissipation Effects 0.000 claims abstract description 149
- 230000000694 effects Effects 0.000 abstract description 9
- 238000002485 combustion reaction Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- MGRWKWACZDFZJT-UHFFFAOYSA-N molybdenum tungsten Chemical compound [Mo].[W] MGRWKWACZDFZJT-UHFFFAOYSA-N 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/02—Details
- H01J61/04—Electrodes; Screens; Shields
- H01J61/06—Main electrodes
- H01J61/073—Main electrodes for high-pressure discharge lamps
- H01J61/0732—Main electrodes for high-pressure discharge lamps characterised by the construction of the electrode
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/02—Details
- H01J61/52—Cooling arrangements; Heating arrangements; Means for circulating gas or vapour within the discharge space
- H01J61/523—Heating or cooling particular parts of the lamp
- H01J61/526—Heating or cooling particular parts of the lamp heating or cooling of electrodes
Landscapes
- Discharge Lamp (AREA)
Abstract
The invention discloses an anode structure for a short-arc mercury xenon lamp; belonging to the technical field of mercury xenon lamps; the technical key point of the device comprises a cylindrical body, wherein the body is composed of a round platform part, a heat dissipation part, an auxiliary heat dissipation supporting part and a supporting inverted round platform part in sequence from top to bottom; the outer diameter of the lower end of the round table is the same as that of the heat dissipation part; the outer diameter of the heat dissipation part is 0.4-0.8mm smaller than that of the auxiliary heat dissipation supporting part; the ratio of the total height of the round table part and the heat dissipation part to the total height of the auxiliary heat dissipation supporting part and the supporting inverted round table part is 1:1.2-1.4; a plurality of first annular heat dissipation grooves are uniformly distributed on the outer wall of the heat dissipation part along the axial direction at intervals, and each first annular heat dissipation groove is circumferentially arranged along the heat dissipation part; the invention aims to provide an anode structure for a short-arc mercury xenon lamp, which has reasonable structure, higher strength and reasonable heat dissipation effect; for mercury xenon lamps.
Description
Technical Field
The present invention relates to a short-arc mercury xenon lamp component, and more particularly to an anode structure for a short-arc mercury xenon lamp.
Background
The anode is a high-voltage trigger combustion point when the short-arc mercury xenon lamp is lighted, and the anode temperature reaches 2500-3000 ℃ when the lamp tube is normally lighted. Meanwhile, the anode also bears strong current impact from the cathode, and stronger bearing strength is needed so as not to influence the service life of the lamp due to change under high temperature and high pressure. Because the anode temperature is extremely high, in order to ensure that the anode works effectively for a long time, a heat dissipation structure is required to be arranged on the surface of the anode so as to increase the heat dissipation effect. However, experiments show that the change of the microstructure of the anode surface can seriously affect the heat dissipation effect and the anode strength, so that the service life of the lamp is obviously deviated.
Disclosure of Invention
The invention aims to provide the anode structure for the short-arc mercury xenon lamp, which has reasonable structure, high strength and reasonable heat dissipation effect, aiming at the defects of the prior art.
The technical scheme of the invention is realized as follows: the anode structure for the short-arc mercury xenon lamp comprises a cylindrical body and is characterized in that the body is composed of a round platform part, a heat dissipation part, an auxiliary heat dissipation supporting part and a supporting inverted round platform part in sequence from top to bottom; the outer diameter of the lower end of the round table is the same as that of the heat dissipation part; the outer diameter of the heat dissipation part is 0.4-0.8mm smaller than that of the auxiliary heat dissipation supporting part; the ratio of the total height of the round table part and the heat dissipation part to the total height of the auxiliary heat dissipation supporting part and the supporting inverted round table part is 1:1.2-1.4;
a plurality of first annular heat dissipation grooves are uniformly distributed on the outer wall of the heat dissipation part along the axial direction at intervals, and each first annular heat dissipation groove is arranged along the circumferential direction of the heat dissipation part.
In the anode structure for a short-arc mercury xenon lamp, the first annular heat dissipation groove is a V-shaped groove; the width of the opening part of the first annular heat dissipation groove is 95-105 mu m, and the depth from the bottom to the opening part is 280-320 mu m; the distance between two adjacent first annular heat dissipation grooves is 90-110 μm.
In the anode structure for a short-arc mercury xenon lamp, the bottom of the first annular radiating groove is of a round corner structure, and the radius of a round corner is 20-30 μm; the contact part of the opening part of the first annular heat dissipation groove and the outer wall of the heat dissipation part is of a round corner structure, and the radius of the round corner is 60-70 mu m.
In the anode structure for a short-arc mercury xenon lamp, a plurality of second annular heat dissipation grooves are uniformly distributed on the outer wall of the auxiliary heat dissipation supporting part along the axial direction at intervals, and each second annular heat dissipation groove is circumferentially arranged along the auxiliary heat dissipation supporting part.
Preferably, the second annular heat dissipation groove is a U-shaped groove; the width of the opening part of the second annular heat dissipation groove is 540-560 μm, and the depth from the bottom to the opening part is 280-320 μm; the spacing between two adjacent second annular heat dissipation grooves is 600 μm-800 μm.
Preferably, the contact part between the bottom surface and the side wall of the second annular heat dissipation groove is a round corner structure, and the radius of the round corner is 100-120 μm; the contact part of the opening part of the second annular heat dissipation groove and the outer wall of the auxiliary heat dissipation supporting part is of a round corner structure, and the radius of the round corner is 100-120 mu m.
In the anode structure for the short-arc mercury xenon lamp, a plurality of third annular heat dissipation grooves are uniformly distributed on the outer wall of the middle of the round table part along the axial direction at intervals, and each third annular heat dissipation groove is arranged along the circumferential direction of the round table part.
Preferably, the third annular heat dissipation groove is a V-shaped groove; the width of the opening part of the third annular heat dissipation groove is 80-90 μm, and the depth from the bottom to the opening part is 200-220 μm; the spacing between every two adjacent third-shaped heat dissipation grooves is 110-130 μm.
Preferably, the bottom of the third annular heat dissipation groove is of a round corner structure, and the round radius of the round corner is 20-30 mu m; the contact part of the opening part of the third annular heat dissipation groove and the outer wall of the round platform part is of a round corner structure, and the round radius of the round corner is 60-70 mu m.
In the anode structure for the short-arc mercury xenon lamp, the heat radiating part is connected with the auxiliary heat radiating supporting part through the connecting circular table, an included angle formed by the outer wall of the connecting circular table and a horizontal plane is 130-140 degrees, and the height H of the connecting circular table is 1.2-1.8mm.
After the structure is adopted, the auxiliary heat dissipation supporting part has higher strength by arranging the heat dissipation parts with different outer diameters and the auxiliary heat dissipation supporting part, and experiments show that when the auxiliary heat dissipation supporting part is 0.4-0.8mm larger than the outer diameter of the heat dissipation part, the strength is obviously improved, and meanwhile, the weight and the formation of a product are not obviously increased. When the anode is made into the equal diameter, if the outer diameter is the same as the heat dissipation part, the strength is lower and the heat dissipation effect is poor; when the outer diameter of the anode is the same as that of the auxiliary heat dissipation supporting part, the service life of the lamp is not obviously changed, but the weight of the product is increased, the cost is obviously increased, and the anode is made of tungsten-molybdenum material and is high in price.
The structure of the third annular radiating groove has a very important function of increasing the stability of arc light while radiating, avoiding the phenomenon of floating movement caused by the influence of high-speed air flow on the arc light, reducing the loss of the anode to the maximum extent and delaying the deformation rate of the anode head.
Further, in order to further improve the service life and stability of the lamp, the structure of the first annular heat dissipation groove outside the heat dissipation part is creatively designed to be different from the structure of the second annular heat dissipation groove outside the auxiliary heat dissipation supporting part. Specifically, the V-shaped structure of the first annular heat dissipation groove is combined with the micro groove structure, so that the strength is ensured, and heat can be properly dissipated, and the working temperature of the anode is maintained to be 2600-2800 ℃; the U-shaped structure of the second annular heat dissipation groove is matched with the deep groove structure, and the U-shaped structure of the second annular heat dissipation groove has higher strength on the basis of larger outer diameter, but the heat dissipation effect is obviously better than that of the heat dissipation part. The heat dissipation part is matched with the auxiliary heat dissipation supporting part, so that the strength of the anode is ensured, and the temperature of the anode is integrally controlled within a reasonable range.
Meanwhile, the structure of the third annular heat dissipation groove can reduce the compression deformation of the position of the anode triggering combustion point and reduce loss. The first, second and third annular radiating grooves are matched with each other, the contact area of each radiating groove is gradually increased from top to bottom, the radiating efficiency is gradually improved, the radiating is mainly based on the auxiliary radiating supporting part, the temperature of the round table part and the radiating part is slowly transferred and changed, the air flow in the lamp tube is enabled to stably run under the condition of guaranteeing the radiating, the stability of burning arc light is enhanced, the light intensity attenuation is relieved, and the service life of the lamp tube is prolonged.
Drawings
The invention is described in further detail below in connection with the embodiments in the drawings, but is not to be construed as limiting the invention in any way.
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is an enlarged schematic view of a portion of FIG. 1 at A;
FIG. 3 is an enlarged partial schematic view at B in FIG. 1;
FIG. 4 is an enlarged partial schematic view at C in FIG. 1;
fig. 5 is a partially enlarged schematic view at D in fig. 1.
In the figure: the heat dissipation device comprises a body 1, a round platform part 2, a third annular heat dissipation groove 2a, a heat dissipation part 3, a first annular heat dissipation groove 3a, an auxiliary heat dissipation supporting part 4, a second annular heat dissipation groove 4a, a supporting inverted round platform part 5 and a connecting round platform 6.
Detailed Description
Referring to fig. 1 to 5, an anode structure for a short arc mercury xenon lamp of the present invention includes a cylindrical body 1, wherein the body 1 is composed of a truncated cone portion 2, a heat dissipation portion 3, an auxiliary heat dissipation supporting portion 4 and a supporting inverted truncated cone portion 5 in sequence from top to bottom; the outer diameter of the lower end of the round table part 2 is the same as the outer diameter of the heat dissipation part 3; the outer diameter of the heat dissipation part 3 is 0.4-0.8mm smaller than the outer diameter of the auxiliary heat dissipation supporting part 4; the ratio of the total height of the round table part 2 and the heat dissipation part 3 to the total height of the auxiliary heat dissipation supporting part 4 and the supporting inverted round table part 5 is 1:1.2-1.4.
In order to make the body structure more compact and reduce excessive friction with the gas in the glass bulb, the heat radiating part 3 and the auxiliary heat radiating supporting part 4 are connected through a connecting round table 6, an included angle formed by the outer wall of the connecting round table 6 and the horizontal plane is 130-140 degrees, and the height H of the connecting round table 6 is 1.2-1.8mm. The angle of the outer wall of the connecting circular truncated cone can provide powerful support for the heat dissipation part, and when the heat dissipation part is impacted by the cathode heavy current, a part of pressure can be separated and the pressure can be uniformly transferred to the auxiliary heat dissipation supporting part.
A plurality of first annular heat dissipation grooves 3a are uniformly distributed on the outer wall of the heat dissipation part 3 along the axial direction at intervals, and each first annular heat dissipation groove 3a is arranged along the circumferential direction of the heat dissipation part 3. Preferably, the first annular heat dissipation groove 3a is a V-shaped groove; the width of the opening part of the first annular heat dissipation groove 3a is 95-105 μm, and the depth from the bottom to the opening part is 280-320 μm; the spacing between two adjacent first annular heat dissipation grooves 3a is 90 μm-110 μm. Meanwhile, the bottom of the first annular radiating groove 3a is of a round corner structure, and the round radius of the round corner is 20-30 mu m; the contact part of the opening part of the first annular heat dissipation groove 3a and the outer wall of the heat dissipation part 3 is in a round corner structure, and the round radius of the round corner is 60-70 mu m. The round angle design can provide a smooth path for high-speed gas in the glass shell, so that severe friction with the body is avoided, the temperature of the body is increased, and the light intensity of the lamp is weakened. Through comparison experiments, the V-shaped structures of the first annular radiating grooves are matched with larger spacing between two adjacent first annular radiating grooves, accurate parameters are matched, and compared with the existing V-shaped grooves, the V-shaped structures form inverted V-shaped convex rings or small-spacing structures at 0 spacing, so that the radiating part has enough strength and has proper radiating effect. If the U-shaped structure is adopted, the strength is reduced, and the heat dissipation effect is too good, so that the energy loss is increased.
Correspondingly, a plurality of second annular heat dissipation grooves 4a are uniformly distributed on the outer wall of the auxiliary heat dissipation supporting part 4 along the axial direction at intervals, and each second annular heat dissipation groove 4a is circumferentially arranged along the auxiliary heat dissipation supporting part 4. The second annular heat dissipation groove 4a is a U-shaped groove; the width of the opening part of the second annular heat dissipation groove 4a is 540-560 μm, and the depth from the bottom to the opening part is 280-320 μm; the spacing between two adjacent second annular heat dissipation grooves 4a is 600 μm-800 μm. Preferably, the contact part between the bottom surface and the side wall of the second annular heat dissipation groove 4a is a round corner structure, and the round radius of the round corner is 100-120 μm; the contact part between the opening part of the second annular heat dissipation groove 4a and the outer wall of the auxiliary heat dissipation supporting part 4 is in a round corner structure, and the round corner has a round radius of 100-120 mu m. The U-shaped structure of the second annular heat dissipation groove provides a larger heat dissipation area, improves the heat dissipation effect, and simultaneously, the outer diameter of the second annular heat dissipation groove is larger than the heat dissipation part, and the depth of the second annular heat dissipation groove is smaller than the increased wall thickness, so that the strength of the second annular heat dissipation groove is still higher than the heat dissipation part, and the heat dissipation part can be effectively supported.
Further, a plurality of third annular heat dissipation grooves 2a are uniformly distributed on the outer wall of the middle of the round platform part 2 along the axial direction at intervals, and each third annular heat dissipation groove 2a is arranged along the circumferential direction of the round platform part 2. The third annular heat dissipation groove 2a is a V-shaped groove; the width of the opening part of the third annular heat dissipation groove 2a is 80-90 μm, and the depth from the bottom to the opening part is 200-220 μm; the spacing between two adjacent third annular heat dissipation grooves 2a is 110 μm-130 μm. Preferably, the bottom of the third annular heat dissipation groove 2a is in a round corner structure, and the round radius of the round corner is 20-30 μm; the contact part of the opening part of the third annular heat dissipation groove 2a and the outer wall of the round platform part 2 is in a round corner structure, and the round radius of the round corner is 60-70 mu m. The third annular heat dissipation groove structure can increase stability of arc light, avoid the phenomenon that the arc light floats and moves due to the influence of high-speed air flow, furthest reduce loss of the anode and delay deformation rate of the anode head.
The above examples are provided for convenience of description of the present invention and are not to be construed as limiting the invention in any way, and any person skilled in the art will make partial changes or modifications to the invention by using the disclosed technical content without departing from the technical features of the invention.
Claims (8)
1. The anode structure for the short-arc mercury xenon lamp comprises a cylindrical body (1), and is characterized in that the body (1) is composed of a round platform part (2), a heat dissipation part (3), an auxiliary heat dissipation supporting part (4) and a supporting inverted round platform part (5) in sequence from top to bottom; the outer diameter of the lower end of the round table part (2) is the same as the outer diameter of the heat dissipation part (3); the outer diameter of the heat dissipation part (3) is 0.4-0.8mm smaller than the outer diameter of the auxiliary heat dissipation supporting part (4); the ratio of the total height of the round table part (2) to the heat dissipation part (3) to the total height of the auxiliary heat dissipation supporting part (4) to the supporting inverted round table part (5) is 1:1.2-1.4;
a plurality of first annular heat dissipation grooves (3 a) are uniformly distributed on the outer wall of the heat dissipation part (3) at intervals along the axial direction, and each first annular heat dissipation groove (3 a) is circumferentially arranged along the heat dissipation part (3);
the first annular radiating groove (3 a) is a V-shaped groove; the width of the opening part of the first annular heat dissipation groove (3 a) is 95-105 mu m, and the depth from the bottom to the opening part is 280-320 mu m; the distance between two adjacent first annular heat dissipation grooves (3 a) is 90-110 mu m;
a plurality of third annular heat dissipation grooves (2 a) are uniformly distributed on the outer wall of the middle of the round platform part (2) along the axial direction at intervals, and each third annular heat dissipation groove (2 a) is circumferentially arranged along the round platform part (2).
2. Anode structure for short-arc mercury xenon lamp according to claim 1, characterized in that the bottom of the first annular heat sink (3 a) is of rounded structure with a radius of the circle of 20 μm-30 μm; the contact part of the opening part of the first annular radiating groove (3 a) and the outer wall of the radiating part (3) is of a round corner structure, and the round corner has a round radius of 60-70 mu m.
3. The anode structure for a short-arc mercury xenon lamp according to claim 1, wherein a plurality of second annular heat dissipation grooves (4 a) are uniformly distributed on the outer wall of the auxiliary heat dissipation supporting portion (4) at intervals along the axial direction, and each second annular heat dissipation groove (4 a) is circumferentially arranged along the auxiliary heat dissipation supporting portion (4).
4. An anode structure for a short-arc mercury xenon lamp according to claim 3, characterized in that the second annular heat sink (4 a) is a U-shaped channel; the width of the opening part of the second annular heat dissipation groove (4 a) is 540-560 μm, and the depth from the bottom to the opening part is 280-320 μm; the distance between two adjacent second annular heat dissipation grooves (4 a) is 600-800 μm.
5. An anode structure for a short arc mercury xenon lamp according to claim 3, wherein the contact part between the bottom surface and the side wall of the second annular heat dissipation groove (4 a) is a round corner structure, and the round corner has a round radius of 100 μm-120 μm; the contact part of the opening part of the second annular radiating groove (4 a) and the outer wall of the auxiliary radiating supporting part (4) is of a round corner structure, and the round radius of the round corner is 100-120 mu m.
6. Anode structure for a short-arc mercury xenon lamp according to claim 1, characterized in that the third annular heat sink (2 a) is a V-shaped groove; the width of the opening part of the third annular heat dissipation groove (2 a) is 80-90 μm, and the depth from the bottom to the opening part is 200-220 μm; the spacing between every two adjacent third annular heat dissipation grooves (2 a) is 110-130 μm.
7. Anode structure for short-arc mercury xenon lamp according to claim 1, characterized in that the bottom of the third annular heat sink (2 a) is a rounded structure with a radius of the circle of 20 μm-30 μm; the contact part of the opening part of the third annular heat dissipation groove (2 a) and the outer wall of the round platform part (2) is of a round corner structure, and the round radius of the round corner is 60-70 mu m.
8. Anode structure for short-arc mercury xenon lamp according to claim 1, characterized in that the heat dissipation part (3) and the auxiliary heat dissipation support part (4) are connected by a connection round table (6), the outer wall of the connection round table (6) forms an angle alpha of 130-140 degrees with the horizontal plane, and the height H of the connection round table (6) is 1.2-1.8mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711286594.7A CN107845562B (en) | 2017-12-07 | 2017-12-07 | Anode structure for short-arc mercury xenon lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711286594.7A CN107845562B (en) | 2017-12-07 | 2017-12-07 | Anode structure for short-arc mercury xenon lamp |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107845562A CN107845562A (en) | 2018-03-27 |
| CN107845562B true CN107845562B (en) | 2023-11-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711286594.7A Active CN107845562B (en) | 2017-12-07 | 2017-12-07 | Anode structure for short-arc mercury xenon lamp |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6181053B1 (en) * | 1999-04-28 | 2001-01-30 | Eg&G Ilc Technology, Inc. | Three-kilowatt xenon arc lamp |
| JP2003223865A (en) * | 2002-01-31 | 2003-08-08 | Ushio Inc | Positive electrode for discharge lamp and short arc discharge lamp |
| CN101271819A (en) * | 2007-03-23 | 2008-09-24 | 株式会社Orc制作所 | Discharge lamp |
| JP2013206827A (en) * | 2012-03-29 | 2013-10-07 | Iwasaki Electric Co Ltd | Short arc type mercury lamp |
| CN203659800U (en) * | 2013-12-18 | 2014-06-18 | 深圳市凯世光电科技有限公司 | Short arc type discharge lamp |
| CN203721677U (en) * | 2013-10-10 | 2014-07-16 | 深圳市凯世光电科技有限公司 | Short-arc discharge lamp |
| CN205582887U (en) * | 2015-12-25 | 2016-09-14 | 梅州市亮如昼科技有限公司 | Tungsten heart -yang utmost point for lamps and lanterns |
| JP2017120690A (en) * | 2015-12-28 | 2017-07-06 | 株式会社オーク製作所 | Discharge lamp |
| CN207474416U (en) * | 2017-12-07 | 2018-06-08 | 梅州市亮如昼科技有限公司 | A kind of anode construction for short arc mercury xenon lamp |
-
2017
- 2017-12-07 CN CN201711286594.7A patent/CN107845562B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6181053B1 (en) * | 1999-04-28 | 2001-01-30 | Eg&G Ilc Technology, Inc. | Three-kilowatt xenon arc lamp |
| JP2003223865A (en) * | 2002-01-31 | 2003-08-08 | Ushio Inc | Positive electrode for discharge lamp and short arc discharge lamp |
| CN101271819A (en) * | 2007-03-23 | 2008-09-24 | 株式会社Orc制作所 | Discharge lamp |
| JP2013206827A (en) * | 2012-03-29 | 2013-10-07 | Iwasaki Electric Co Ltd | Short arc type mercury lamp |
| CN203721677U (en) * | 2013-10-10 | 2014-07-16 | 深圳市凯世光电科技有限公司 | Short-arc discharge lamp |
| CN203659800U (en) * | 2013-12-18 | 2014-06-18 | 深圳市凯世光电科技有限公司 | Short arc type discharge lamp |
| CN205582887U (en) * | 2015-12-25 | 2016-09-14 | 梅州市亮如昼科技有限公司 | Tungsten heart -yang utmost point for lamps and lanterns |
| JP2017120690A (en) * | 2015-12-28 | 2017-07-06 | 株式会社オーク製作所 | Discharge lamp |
| CN207474416U (en) * | 2017-12-07 | 2018-06-08 | 梅州市亮如昼科技有限公司 | A kind of anode construction for short arc mercury xenon lamp |
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| CN107845562A (en) | 2018-03-27 |
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Effective date of registration: 20231009 Address after: 221400 Zhongzhuang village, BEIGOU Town, Xinyi City, Xuzhou City, Jiangsu Province Applicant after: JIAGNSU PUYA LIGHTING TECHNOLOGY PUBLIC Co.,Ltd. Address before: 514000 Shoutai Village, Daping Town, Meixian District, Meizhou City, Guangdong Province (within Guangming Garbage Power Generation Company) Meizhou Liangruyan Technology Co.,Ltd. Applicant before: MEIZHOU LIANGRUZHOU TECHNOLOGY Co.,Ltd. |
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