CN112013335A - Solar street lamp - Google Patents

Solar street lamp Download PDF

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Publication number
CN112013335A
CN112013335A CN202010838296.XA CN202010838296A CN112013335A CN 112013335 A CN112013335 A CN 112013335A CN 202010838296 A CN202010838296 A CN 202010838296A CN 112013335 A CN112013335 A CN 112013335A
Authority
CN
China
Prior art keywords
lamp
sliding block
fixedly connected
sliding
solar
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202010838296.XA
Other languages
Chinese (zh)
Inventor
李中艳
陈捷
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jiangsu Shangjie Lighting Technology Co ltd
Original Assignee
Jiangsu Shangjie Lighting Technology Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Jiangsu Shangjie Lighting Technology Co ltd filed Critical Jiangsu Shangjie Lighting Technology Co ltd
Priority to CN202010838296.XA priority Critical patent/CN112013335A/en
Publication of CN112013335A publication Critical patent/CN112013335A/en
Pending legal-status Critical Current

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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
    • F21S9/00—Lighting devices with a built-in power supply; Systems employing lighting devices with a built-in power supply
    • F21S9/02—Lighting devices with a built-in power supply; Systems employing lighting devices with a built-in power supply the power supply being a battery or accumulator
    • F21S9/03—Lighting devices with a built-in power supply; Systems employing lighting devices with a built-in power supply the power supply being a battery or accumulator rechargeable by exposure to light
    • F21S9/035—Lighting devices with a built-in power supply; Systems employing lighting devices with a built-in power supply the power supply being a battery or accumulator rechargeable by exposure to light the solar unit being integrated within the support for the lighting unit, e.g. within or on a pole
    • 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
    • F21V21/00—Supporting, suspending, or attaching arrangements for lighting devices; Hand grips
    • F21V21/14—Adjustable mountings
    • F21V21/15—Adjustable mountings specially adapted for power operation, e.g. by remote control
    • 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
    • F21V21/00—Supporting, suspending, or attaching arrangements for lighting devices; Hand grips
    • F21V21/34—Supporting elements displaceable along a guiding element
    • 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
    • F21V21/00—Supporting, suspending, or attaching arrangements for lighting devices; Hand grips
    • F21V21/36—Hoisting or lowering devices, e.g. for maintenance
    • 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
    • F21V23/00—Arrangement of electric circuit elements in or on lighting devices
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
    • H02S20/00—Supporting structures for PV modules
    • H02S20/30—Supporting structures being movable or adjustable, e.g. for angle adjustment
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2131/00—Use or application of lighting devices or systems not provided for in codes F21W2102/00-F21W2121/00
    • F21W2131/10—Outdoor lighting
    • F21W2131/103—Outdoor lighting of streets or roads
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
    • Y02B20/72—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps in street lighting
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Fastening Of Light Sources Or Lamp Holders (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

The invention relates to a solar street lamp, comprising: the street lamp body, the street lamp body includes: the solar lamp comprises a base, a hollow lamp post, a sliding block, a lamp arm and a solar cell panel, wherein the bottom end of one side, away from the sliding block, of the lamp arm is detachably connected with a lamp; the transmission assembly, the storage tank has been seted up on the base, the transmission assembly includes: the bottom end of the screw rod extends to the accommodating groove, an embedding groove is formed in the accommodating groove, and an embedding block matched with the embedding groove is fixedly connected to the output end of the driving motor. When the lamp or the solar cell panel needs to be maintained, the sliding plate is slid to enable the clamping and embedding block to be clamped and embedded in the clamping and embedding groove, the screw rod is driven to rotate by the driving motor, so that the sliding block is driven to move in the vertical direction, the lamp or the solar cell panel is lowered to the ground from a high position, the climbing process of workers is omitted, potential safety hazards in maintenance work are avoided, and maintenance is facilitated.

Description

Solar street lamp
Technical Field
The invention relates to the technical field of solar street lamps, in particular to a solar street lamp.
Background
The solar street lamp is powered by a crystalline silicon solar cell, and the ultra-high brightness LED lamp is used as a light source and is controlled by the intelligent charging and discharging controller, so that the solar street lamp is used for replacing the traditional street lamp for public power illumination.
At present, most of the existing solar street lamps are provided with photovoltaic panels at the top ends of lamp posts and at higher positions, when the photovoltaic panels need to be maintained, workers need to climb to high positions by using climbing equipment for maintenance, and therefore certain potential safety hazards exist in maintenance work; in addition, when needs take the photovoltaic to ground when maintenance again, because the photovoltaic board is generally fixed on the lamp pole, so need dismantle the photovoltaic board from the lamp pole, and this needs the manual work to dismantle a lot of spare parts, not only wastes time and energy, increases working strength, still can indirectly influence the work efficiency of photovoltaic board.
Disclosure of Invention
In order to solve the technical problems, the invention provides the solar street lamp which has the advantages of convenience in maintenance and high safety.
In order to achieve the purpose, the technical scheme of the invention is as follows:
a solar street light, comprising: the street lamp body, the street lamp body includes: the solar lamp comprises a base, a hollow lamp post fixedly connected to the top end of the base, sliding blocks symmetrically arranged on two sides of the hollow lamp post and slidably assembled on the side wall of the hollow lamp post, a lamp arm fixedly connected to one side of the sliding block, the end of the sliding block, far away from the hollow lamp post, and a solar cell panel detachably connected to the sliding block on the side opposite to the lamp arm, wherein the bottom end of one side, far away from the sliding block, of the lamp arm is detachably connected with a lamp; locate on the street lamp body and be used for driving the sliding block carries out the gliding drive assembly of vertical direction, has seted up the storage tank on the base, drive assembly includes: the rotary type assemble in the hollow lamp pole and with sliding block threaded connection's screw rod, slidingtype assemble in sliding plate and fixed connection in the storage tank in the driving motor on the sliding plate top surface, the screw rod bottom extends to in the storage tank and be close to hollow lamp pole axis one side has seted up the inlay card groove, driving motor output end fixedly connected with the inlay card piece of inlay card groove looks adaptation.
Realize above-mentioned technical scheme, when lamps and lanterns or solar cell panel need be maintained, the slip slide board makes the inlay card inlay in the inlay card inslot, utilizes driving motor to drive the screw rod and rotates to drive the sliding block and carry out the motion of vertical direction, descend lamps and lanterns or solar cell panel to ground from the eminence, saved staff's climbing process, avoided the potential safety hazard in the maintenance work, convenient maintenance.
As a preferred scheme of the present invention, the sliding plate is slidably connected to a bottom portion of the accommodating groove, a telescopic cylinder is fixedly connected to the inside of the base, the telescopic cylinder is horizontally disposed, and a telescopic end of the telescopic cylinder is located in the accommodating groove and is fixedly connected to a side surface of the sliding block.
According to the technical scheme, the telescopic cylinder drives the sliding plate to slide, so that the driving motor can independently drive the left or right screw rod to rotate, and the lamp or the solar street lamp can be conveniently and independently repaired.
As a preferable scheme of the invention, a mounting seat is fixedly connected to the sliding block on the side far away from the lamp arm, an insertion groove is formed in the mounting seat, and an insertion column matched with the insertion groove is fixedly connected to the bottom surface of the solar cell panel.
As a preferable scheme of the invention, sliding grooves are symmetrically formed in the top surface of the mounting seat at two sides of the insertion groove, a movable block is slidably assembled in the sliding grooves, a limit block is fixedly connected to the top end of the side wall of one side of the movable block close to the insertion groove, and limit grooves matched with the limit block are formed in two sides of the insertion column.
As a preferable scheme of the invention, a transmission gear is rotationally connected in the mounting seat, a first rack is arranged on the side wall of the bottom end of the insertion column, a second rack is arranged on the bottom surface of the movable block, and the first rack and the second rack are respectively in meshed connection with the transmission gear.
Realize above-mentioned technical scheme, during the installation solar cell panel, with the grafting post plug-in grafting into the inserting groove, in the installation, first rack drives drive gear and rotates to drive the second rack and slide, the movable block slides to being close to the grafting post direction, spacing block inlay card in spacing inslot, the realization is firm to solar cell panel, the installation is dismantled conveniently, and need not unnecessary part instrument, when the maintenance of solar cell panel is dismantled to needs, has improved work efficiency greatly.
As a preferable scheme of the present invention, the height of the limiting groove is greater than the height of the limiting block.
According to the technical scheme, the limiting blocks can be clamped and embedded into the limiting grooves.
In conclusion, the invention has the following beneficial effects: when lamps and lanterns or solar cell panel need be maintained, the slip sliding plate makes the inlay card in the inlay card inslot, utilizes driving motor to drive the screw rod and rotates to drive the sliding block and carry out the motion of vertical direction, descend lamps and lanterns or solar cell panel to ground from the eminence, saved staff's climbing process, avoided the potential safety hazard in the maintenance work, convenient maintenance.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Fig. 2 is an enlarged view of a portion a in fig. 1.
Fig. 3 is an enlarged view of a portion B in fig. 1.
The corresponding part names indicated by the numbers and letters in the drawings:
1. a base; 2. a hollow lamp post; 3. a slider; 4. a lamp arm; 5. a solar panel; 6. a light fixture; 7. a containing groove; 8. a screw; 9. a sliding plate; 10. a drive motor; 11. a clamping groove; 12. an embedding block is clamped; 13. a telescopic cylinder; 14. a mounting seat; 15. inserting grooves; 16. inserting the column; 17. a sliding groove; 18. a movable block; 19. a limiting block; 20. a limiting groove; 21. a transmission gear; 22. a first rack; 23. a second rack.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Examples
As shown in fig. 1 to 3, the present invention provides a solar street lamp, which comprises a street lamp body, and a transmission assembly, wherein the street lamp body comprises: base 1, hollow lamp pole 2, sliding block 3, arm 4, and reach solar cell panel 5, 2 fixed connection on the 1 top of base of hollow lamp pole, 2 both sides of hollow lamp pole and slidingtype assembly on 2 lateral walls of hollow lamp pole are located to sliding block 3 symmetry, 2 one end of hollow lamp pole are kept away from to arm 4 fixed connection in one side sliding block 3, solar cell panel 5 can be dismantled and connect on 4 one side sliding blocks 3 of relative arm, arm 4 is kept away from 3 one side bottoms of sliding block and can be dismantled and be connected with lamps and lanterns 6.
Drive assembly locates on the street lamp body and is used for driving sliding block 3 to carry out vertical direction and slides, has seted up storage tank 7 on the base 1, and drive assembly includes: screw rod 8, sliding plate 9 and driving motor 10, 8 rotary type assemblies in hollow lamp pole 2 and with 3 threaded connection of sliding block, sliding plate 9 slidingtype assembles in storage tank 7, driving motor 10 fixed connection is on the 9 top surfaces of sliding plate, 8 bottoms of screw rod extend to in the storage tank 7 and be close to hollow lamp pole 2 axis one side and seted up inlay card groove 11, driving motor 10 output end fixedly connected with inlay card 12 of 11 looks adaptations of inlay card groove.
Sliding plate 9 slidingtype joint is in storage tank 7 bottom, fixedly connected with telescopic cylinder 13 in the base 1, and telescopic cylinder 13 is horizontal setting, and telescopic cylinder 13 flexible end is located storage tank 7 and with 3 side fixed connection of sliding block, and telescopic cylinder 13 drives sliding plate 9 and slides, makes driving motor 10 can drive left side or right side screw rod 8 alone and rotate, conveniently repairs alone lamps and lanterns 6 or solar street lamp.
A mounting seat 14 is fixedly connected to the sliding block 3 at one side far away from the lamp arm 4, an inserting groove 15 is arranged on the mounting seat 14, an inserting column 16 matched with the inserting groove 15 is fixedly connected to the bottom surface of the solar cell panel 5, sliding grooves 17 are symmetrically arranged at two sides of the inserting groove 15 on the top surface of the mounting seat 14, a movable block 18 is slidably assembled in the sliding groove 17, a limiting block 19 is fixedly connected to the top end of the side wall of one side of the movable block 18 close to the inserting groove 15, limiting grooves 20 matched with the limiting block 19 are arranged at two sides of the inserting column 16, a transmission gear 21 is rotatably connected to the mounting seat 14, a first rack 22 is arranged on the side wall at the bottom end of the inserting column 16, a second rack 23 is arranged on the bottom surface of the movable block 18, the first rack 22 and the second rack 23 are respectively engaged and connected with the transmission gear 21, when the, first rack 22 drives drive gear 21 and rotates to it slides to drive second rack 23, and movable block 18 slides to being close to 16 directions of the post of pegging graft, and stopper 19 card inlays in spacing groove 20, realizes stabilizing solar cell panel 5, and the installation is dismantled conveniently, and need not unnecessary spare part instrument, when the maintenance of solar cell panel 5 is dismantled to needs, has improved work efficiency greatly.
Preferably, the height of the limiting groove 20 is larger than that of the limiting block 19, so that the limiting block 19 can be clamped and embedded into the limiting groove 20.
In the embodiment of the invention, when the lamp 6 or the solar cell panel 5 needs to be maintained, the sliding plate 9 is slid to enable the clamping and embedding block 12 to be clamped and embedded in the clamping and embedding groove 11, the driving motor 10 is utilized to drive the screw rod 8 to rotate, so that the sliding block 3 is driven to move in the vertical direction, the lamp 6 or the solar cell panel 5 is lowered to the ground from a high position, the climbing process of workers is omitted, the potential safety hazard in maintenance work is avoided, and the maintenance is convenient.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (6)

1. A solar street light, comprising:
the street lamp body, the street lamp body includes: the solar lamp comprises a base, a hollow lamp post fixedly connected to the top end of the base, sliding blocks symmetrically arranged on two sides of the hollow lamp post and assembled on the side wall of the hollow lamp post in a sliding manner, a lamp arm fixedly connected to one side of the sliding block, the end of the sliding block, far away from the hollow lamp post, and a solar panel detachably connected to the sliding block on the side opposite to the lamp arm, wherein the bottom end, far away from the sliding block, of the lamp arm is detachably connected with a lamp;
locate on the street lamp body and be used for driving the sliding block carries out the gliding drive assembly of vertical direction, the storage tank has been seted up on the base, drive assembly includes: the rotary type assemble in the hollow lamp pole and with sliding block threaded connection's screw rod, slidingtype assemble in sliding plate and fixed connection in the storage tank in the driving motor on the sliding plate top surface, the screw rod bottom extends to in the storage tank and be close to hollow lamp pole axis one side has seted up the inlay card groove, driving motor output fixedly connected with the inlay card piece of inlay card groove looks adaptation.
2. The solar street light as claimed in claim 1, wherein the sliding plate is slidably engaged with the bottom of the receiving slot, and a telescopic cylinder is fixedly connected in the base and horizontally disposed, and a telescopic end of the telescopic cylinder is located in the receiving slot and fixedly connected to a side surface of the sliding plate.
3. The solar street lamp as claimed in claim 1, wherein a mounting seat is fixedly connected to the sliding block on the side away from the lamp arm, the mounting seat is provided with an insertion groove, and the bottom surface of the solar panel is fixedly connected with an insertion column matched with the insertion groove.
4. The solar street lamp as claimed in claim 3, wherein the top surface of the mounting seat is symmetrically provided with sliding grooves at two sides of the insertion groove, the sliding grooves are internally and slidably provided with movable blocks, the movable blocks are fixedly connected with limit blocks at the top ends of the side walls at one side close to the insertion groove, and two sides of the insertion column are provided with limit grooves adapted to the limit blocks.
5. The solar street lamp as claimed in claim 4, wherein a transmission gear is rotatably connected in the mounting seat, a first rack is arranged on the side wall of the bottom end of the plug column, a second rack is arranged on the bottom surface of the movable block, and the first rack and the second rack are respectively engaged with the transmission gear.
6. The solar street light as claimed in claim 5, wherein the height of the limiting groove is greater than the height of the limiting block.
CN202010838296.XA 2020-08-19 2020-08-19 Solar street lamp Pending CN112013335A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010838296.XA CN112013335A (en) 2020-08-19 2020-08-19 Solar street lamp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010838296.XA CN112013335A (en) 2020-08-19 2020-08-19 Solar street lamp

Publications (1)

Publication Number Publication Date
CN112013335A true CN112013335A (en) 2020-12-01

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ID=73505119

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010838296.XA Pending CN112013335A (en) 2020-08-19 2020-08-19 Solar street lamp

Country Status (1)

Country Link
CN (1) CN112013335A (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107218568A (en) * 2017-06-06 2017-09-29 深圳市奈士迪技术研发有限公司 A kind of solar street light for being easy to repair
CN107420817A (en) * 2017-08-24 2017-12-01 徐丽 A kind of screw rod transmission Liftable type street lamp
CN208764826U (en) * 2018-06-21 2019-04-19 江苏博亚照明电器有限公司 A kind of energy-saving telescopic solar street light
CN110454728A (en) * 2019-08-14 2019-11-15 江苏豪纬交通集团有限公司 A kind of detachable wisdom street lamp based on Internet of Things
CN110906262A (en) * 2019-12-31 2020-03-24 赣州明龙照明科技有限公司 Solar street lamp
CN111120956A (en) * 2020-01-17 2020-05-08 苏州本末智能科技有限公司 Solar street lamp convenient to maintenance

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107218568A (en) * 2017-06-06 2017-09-29 深圳市奈士迪技术研发有限公司 A kind of solar street light for being easy to repair
CN107420817A (en) * 2017-08-24 2017-12-01 徐丽 A kind of screw rod transmission Liftable type street lamp
CN208764826U (en) * 2018-06-21 2019-04-19 江苏博亚照明电器有限公司 A kind of energy-saving telescopic solar street light
CN110454728A (en) * 2019-08-14 2019-11-15 江苏豪纬交通集团有限公司 A kind of detachable wisdom street lamp based on Internet of Things
CN110906262A (en) * 2019-12-31 2020-03-24 赣州明龙照明科技有限公司 Solar street lamp
CN111120956A (en) * 2020-01-17 2020-05-08 苏州本末智能科技有限公司 Solar street lamp convenient to maintenance

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Application publication date: 20201201

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