CN112146069A - Energy saver of LED dimming energy-saving lamp - Google Patents

Energy saver of LED dimming energy-saving lamp Download PDF

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Publication number
CN112146069A
CN112146069A CN202011003176.4A CN202011003176A CN112146069A CN 112146069 A CN112146069 A CN 112146069A CN 202011003176 A CN202011003176 A CN 202011003176A CN 112146069 A CN112146069 A CN 112146069A
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China
Prior art keywords
ring
plate
shell
energy
top surface
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Withdrawn
Application number
CN202011003176.4A
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Chinese (zh)
Inventor
王志萍
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.)
Guangzhou Kaiyu Information Technology Co ltd
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Guangzhou Kaiyu Information Technology Co ltd
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Publication date
Application filed by Guangzhou Kaiyu Information Technology Co ltd filed Critical Guangzhou Kaiyu Information Technology Co ltd
Priority to CN202011003176.4A priority Critical patent/CN112146069A/en
Publication of CN112146069A publication Critical patent/CN112146069A/en
Withdrawn legal-status Critical Current

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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V23/00Arrangement of electric circuit elements in or on lighting devices
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V17/00Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
    • F21V17/10Fastening 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
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V17/00Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
    • F21V17/10Fastening 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
    • F21V17/16Fastening 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 by deformation of parts; Snap action mounting
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V23/00Arrangement of electric circuit elements in or on lighting devices
    • F21V23/06Arrangement of electric circuit elements in or on lighting devices the elements being coupling devices, e.g. connectors

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

The invention discloses a dimming energy-saving lamp energy saver which structurally comprises a fixed seat, a machine body, a control panel and an overhaul plug, wherein the top surface of the fixed seat is welded with the bottom surface of the machine body, the bottom surface of the control panel is fixedly arranged on the top surface of the machine body, and the left side of the overhaul plug is embedded into the right side of the machine body.

Description

Energy saver of LED dimming energy-saving lamp
Technical Field
The invention relates to the field of LED lamps, in particular to an energy saver of an LED dimming energy-saving lamp.
Background
The energy saver is generally divided into a lighting lamp energy saver and various power energy savers, a high-voltage filtering and energy absorption technology is adopted, energy of reverse potential of high-voltage power equipment is automatically absorbed and continuously fed back to a load, the part of electric energy absorbed by electric equipment from a high-voltage power grid is saved, in the process of power transmission, in order to avoid voltage loss and too low peak voltage of the electric power, the electric equipment is generally transmitted by adopting improved voltage, the electric equipment is transmitted to the electric equipment after being absorbed by the energy saver and is changed into proper voltage, if the electric equipment is not processed by the energy saver, the electric equipment can still normally work, but the electric equipment is more easily heated due to the overlarge voltage, the efficiency is reduced, the service life is influenced, the energy saver for the LED energy-saving lamp is connected to the electric inlet of the LED energy-saving lamp in a series mode, and the voltage-reduced part is transmitted to the LED energy-saving lamp after the current of the high-voltage power grid is absorbed by various modes to enable the LED energy One energy saver can be connected with a plurality of LED energy-saving lamps in series to work for the plurality of LED energy-saving lamps, but once a certain voltage reduction element in the energy saver is damaged, the whole LED energy-saving lamp connected with the energy saver is completely turned off, so that the whole LED lamp is paralyzed and loses the lightening working capacity.
Disclosure of Invention
In order to solve the problems, the invention provides an energy saver of a dimming energy-saving lamp.
In order to achieve the purpose, the invention is realized by the following technical scheme: the structure of the energy saver of the dimming energy-saving lamp comprises a fixed seat, a machine body, a control panel and an overhaul plug, wherein the top surface of the fixed seat is welded with the bottom surface of the machine body; the organism includes the shell, connects the electric head, establishes the seat, connecting cable, step-down transformer, output head, connect the electric head embedding in the shell right side, establish the inside fixed connection of seat bottom surface and shell, step-down transformer one side is connected with connecting the electric head left side through connecting cable, the step-down transformer embedding is in setting for a top surface, the output head embedding is in the shell left side, the step-down transformer is equipped with a plurality ofly, and a plurality of step-down transformer clearance evenly distributed is in setting for a top.
Further, the step-down transformer includes the step-down head, processor, connects, locks groove, ejector, conducting rod, step-down head bottom surface and processor top surface welded connection, connect top surface and processor bottom surface fixed connection, lock inslot ring and processor outer loop are overlapped mutually together, ejector top surface and joint surface contact, conducting rod bottom and the activity block of locking groove bottom, the conducting rod is equipped with two, and two conducting rod mirror images distribute in the left and right sides that connects.
Further, the conducting rod includes barred body, conducting layer, contact plate, boosting ring, connective bar, bounce ball, the conducting layer is embedded in the barred body right side, the contact plate bottom welds in the barred body top surface, boosting ring outer loop and barred body bottom fixed connection, the connective bar is passed through on the barred body left side and is connected with the bounce ball skin, the bounce ball uses silica gel manufacturing, has stronger deformability, and the surface has the adhesion.
Further, the boosting ring comprises an outer ring, a spring bin, a rebound plate, a limiting plate, a cushioning block and a fixed shaft, the spring bin is fixedly installed inside the outer ring, the top of the rebound plate is overlapped with the right side of the spring bin, the top surface of the limiting plate and the inner ring of the outer ring are integrally formed, one side of the rebound plate is connected with the limiting plate through the cushioning block, the outer ring of the fixed shaft is fixedly connected with the bottom of the rebound plate, the rebound plate and the limiting plate are respectively three, and the three rebound plate and the limiting plate are uniformly distributed around the fixed shaft in a clearance mode.
Furthermore, the ejector comprises a fixed shell, an electric connection plate, an electromagnet, a recovery ring, an ejector rod and a magnetic plate, wherein the electric connection plate is embedded into the top of the fixed shell, the bottom of the electromagnet is fixedly installed inside the fixed shell, the outer ring of the recovery ring is fixedly connected with the inside of the fixed shell, the bottom of the ejector rod is fixedly connected with the top of the magnetic plate, the bottom of the recovery ring is overlapped with the top of the magnetic plate, and the magnetism generated after the electromagnet is electrified is opposite to that of the magnetic plate.
Furthermore, the recycling ring comprises a ring shell, a fixed plate, a movable plate, an elastic plate, an inner shaft, a rolling block and a steel cable, wherein the inner ring of the ring shell is welded to the top surface of the fixed plate, the bottom of the movable plate is fixedly connected with the outer ring of the inner shaft, the inner ring of the rolling block is fixedly connected with the outer ring of the inner shaft, one side of the movable plate is connected with one side of the fixed plate through the elastic plate, and the top end of the movable plate is provided with a sliding wheel structure.
Advantageous effects
Compared with the prior art, the invention has the following beneficial effects:
according to the invention, after a certain voltage reducer in the energy saver is damaged, the quick response can be realized, the damaged voltage reducer is directly ejected out, the conductive rods are pushed to be mutually combined through the boosting rings, the current is continuously output through the conductive rods, the phenomenon that the whole LED energy-saving lamp is paralyzed and loses the lightening working capacity due to the damage of the certain voltage reducer is avoided, and the damaged voltage reducer is easily found, so that the maintenance is more convenient.
Drawings
Fig. 1 is a schematic three-dimensional structure diagram of an energy saver of an LED dimming energy-saving lamp according to the present invention.
Fig. 2 is a schematic structural view of a front section of the machine body of the present invention.
FIG. 3 is a schematic structural view of a front cross section of the pressure reducer of the present invention.
FIG. 4 is a schematic structural diagram of a front cross section of a conductive rod according to the present invention.
Fig. 5 is a schematic structural diagram of an elevational cross section of the booster ring of the present invention.
Fig. 6 is a schematic structural diagram of a front cross section of the ejector according to the present invention.
FIG. 7 is a schematic structural view of a front cross section of a recycling ring according to the present invention.
In the figure: a fixed seat-1, a machine body-2, a control panel-3, an overhaul plug-4, a shell-21, a power connection head-22, a setting seat-23, a connecting cable-24, a voltage reducer-25, an output head-26, a voltage reduction head-251, a processor-252, a connector-253, a locking groove-254, an ejector-255, a conductive rod-256, a rod-A1, a conductive layer-A2, a contact plate-A3, a boosting ring-A4, a connecting rod-A5, a bounce ball-A6, an outer ring-A41, a spring bin-A42, a bounce plate-A43, a limit plate-A44, a shock absorption block-A45, a fixed shaft-A46, a fixed casing-B1, a power connection plate-B2, an electromagnet-B3, a recovery ring-B4, a push rod-B5, a power connection head-A1, a, Magnetic board-B6, ring shell-B41, fixed board-B42, moving board-B43, elastic board-B44, inner shaft-B45, rolling block-B46 and steel cable-B47.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is obvious that the described embodiments are some, not all embodiments of the present invention, and all other embodiments obtained by those skilled in the art without creative efforts based on the embodiments of the present invention belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
The first embodiment is as follows:
referring to fig. 1-5, the embodiments of the present invention are as follows: an energy saver of an LED dimming energy-saving lamp structurally comprises a fixed seat 1, a machine body 2, a control panel 3 and an overhaul plug 4, wherein the top surface of the fixed seat 1 is welded with the bottom surface of the machine body 2, the bottom surface of the control panel 3 is fixedly arranged on the top surface of the machine body 2, and the left side of the overhaul plug 4 is embedded into the right side of the machine body 2; organism 2 includes shell 21, connects electrical connector 22, establishes seat 23, connecting cable 24, step-down transformer 25, output head 26, connect electrical connector 22 and imbed in the shell 21 right side, establish the inside fixed connection of seat 23 bottom surface and shell 21, step-down transformer 25 one side is connected with connecting electrical connector 22 left side through connecting cable 24, step-down transformer 25 imbeds in setting for seat 23 top surface, output head 26 imbeds in the shell 21 left side, step-down transformer 25 is equipped with a plurality ofly, and a plurality of step-down transformer 25 clearance evenly distributed are in establishing 23 tops, are favorable to carrying out repetitious step-down many times to the high-tension electricity of inserting, make the voltage of output more fit for LED lamp work.
Wherein, step-down transformer 25 includes step-down head 251, processor 252, connects 253, locking groove 254, pop-up ware 255, conducting rod 256, step-down head 251 bottom surface and processor 252 top surface welded connection, connect 253 top surface and processor 252 bottom surface fixed connection, the locking groove 254 inner ring is in the same place with the outer loop of processor 252 superposes mutually, pop-up ware 255 top surface and joint 253 surface contact, 256 bottoms of conducting rod and the locking groove 254 activity block in the bottom, conducting rod 256 is equipped with two, and 256 mirror images of two conducting rods distribute in the left and right sides of connecting 253, are favorable to two conducting rods to press from both sides each other and carry out electrically conductive.
The conductive rod 256 comprises a rod body A1, a conductive layer A2, a contact plate A3, a boosting ring A4, a connecting rod A5 and a bouncing ball A6, wherein the conductive layer A2 is embedded in the right side of the rod body A1, the bottom of the contact plate A3 is welded on the top surface of the rod body A1, the outer ring of the boosting ring A4 is fixedly connected with the bottom of the rod body A1, the left side of the rod body A1 is connected with the outer layer of the bouncing ball A6 through the connecting rod A5, the bouncing ball A6 is made of silica gel, has strong deformation capability and adhesive surface, is beneficial to keeping stability in a normal state and can be quickly pulled away in an open circuit state.
The boosting ring A4 comprises an outer ring A41, a spring bin A42, a rebound plate A43, a limiting plate A44, a shock absorption block A45 and a fixing shaft A46, wherein the spring bin A42 is fixedly installed inside the outer ring A41, the top of the rebound plate A43 is overlapped with the right side of the spring bin A42, the top surface of the limiting plate A44 and the inner ring of the outer ring A41 are integrally formed, one side of the rebound plate A43 is connected with the limiting plate A44 through the shock absorption block A45, the outer ring of the fixing shaft A46 is fixedly connected with the bottom of the rebound plate A43, the rebound plates A43 and the limiting plates A44 are respectively three, and the three rebound plates A43 and the limiting plate A44 are uniformly distributed around the fixing shaft A46 in a clearance mode, and a stronger rebound force can be provided, so that the elastic ball A6 can be pulled away.
Based on the above embodiment, the specific working principle is as follows: the power is connected from the power connector 22 of the machine body 2, then the current is sent into the connecting cable 24 through the power connector 22 and is conveyed into a plurality of voltage reducers 25, under the normal condition, the current is input into a transformer and is connected with a connector 253 through a conducting layer A2 of the conducting rod 256, the current is sent into a processor 252 to be changed into low voltage and is sent to another conducting rod 256, then the low voltage is output to an electric LED lamp through an output head 26, when the processor 252 of one voltage reducer 25 is damaged, the whole circuit loses current, at the moment, the connector 253 is pushed upwards from the bottom through an ejector 255, the damaged processor 252 is ejected, at the moment, because the blockage of the connector 253 is not present, the elastic force accumulated in a spring bin A42 of a boosting ring A4 of the conducting rod 256 starts to act, the outer ring A41 is rotated, the rod body A1 of the outer ring A41 level is moved, the two conducting rods 256 are moved relatively, a contact plate makes A3 touch together, the circuit is switched on again to avoid the circuit breaking.
Example two:
referring to fig. 6-7, the embodiment of the present invention is as follows: the ejector 255 comprises a fixed shell B1, an electric plate B2, an electromagnet B3, a recovery ring B4, a push rod B5 and a magnetic plate B6, wherein the electric plate B2 is embedded into the top of the fixed shell B1, the bottom of the electromagnet B3 is fixedly installed inside a fixed shell B1, the outer ring of the recovery ring B4 is fixedly connected with the inside of the fixed shell B1, the bottom of the push rod B5 is fixedly connected with the top of the magnetic plate B6, the bottom of the recovery ring B4 is overlapped with the top of the magnetic plate B6, magnetism generated after the electromagnet B3 is electrified is opposite to magnetism of the magnetic plate B6, and the push rod B5 is prevented from being ejected by the pull-down magnetic plate B6 when the electromagnet B3 is electrified.
The recycling ring B4 comprises a ring shell B41, a fixed plate B42, a moving plate B43, an elastic plate B44, an inner shaft B45, a rolling block B46 and a steel cable B47, wherein the inner ring of the ring shell B41 is connected with the top surface of the fixed plate B42 in a welding mode, the bottom of the moving plate B43 is fixedly connected with the outer ring of the inner shaft B45, the inner ring of the rolling block B46 is fixedly connected with the outer ring of the inner shaft B45, one side of the moving plate B43 is connected with one side of the fixed plate B42 through the elastic plate B44, and the top end of the moving plate B43 is provided with a sliding wheel structure, so that friction between the moving plate B43 and the inner ring.
Based on the above embodiment, the specific working principle is as follows: when the circuit is broken, the current received from the electrical connection plate B2 on the top of the fixed shell B1 is completely disappeared, so the electromagnet B3 no longer possesses magnetic force, at this time, the magnetic force plate B6 cannot be continuously attracted downwards, because the attraction force is lost, the moving plate B43 of the recovery ring B4 no longer possesses force pressing the elastic plate B44, so the electromagnet B3 is rebounded, the moving plate B43 moves along the inner ring of the ring shell B41, and simultaneously the inner shaft B45 is driven, so the winding block B46 connected with the inner shaft B45 starts to rotate, the steel cable B47 is wound, the steel cable B47 is lifted upwards in the winding process, the magnetic force plate B6 is lifted upwards, so the magnetic force plate B6 is lifted upwards, the ejector pin B5 is driven to extend upwards to the electrical connection plate B2, the joint 253 in contact with the electrical connection plate B2 is lifted upwards, the whole damaged joint 253 and the handler 252 are pushed upwards, and are separated from the locking groove 254, so that the.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims (6)

1. The utility model provides a LED electricity-saving lamp energy-saving appliance of adjusting luminance, its structure includes fixing base (1), organism (2), control panel (3), maintenance plug (4), its characterized in that:
the top surface of the fixed seat (1) is welded with the bottom surface of the machine body (2), the bottom surface of the control panel (3) is fixedly arranged on the top surface of the machine body (2), and the left side of the maintenance plug (4) is embedded into the right side of the machine body (2);
organism (2) are including shell (21), connect electric head (22), set for seat (23), connecting cable (24), step-down transformer (25), output head (26), connect electric head (22) and imbed in shell (21) right side, set for seat (23) bottom surface and shell (21) inside fixed connection, step-down transformer (25) one side is passed through connecting cable (24) and is connected with electric head (22) left side, step-down transformer (25) are embedded in and are set for seat (23) top surface, output head (26) are embedded in shell (21) left side.
2. The energy saver of an LED dimming energy-saving lamp as claimed in claim 1, wherein: step-down transformer (25) is including pressure reduction head (251), processor (252), connect (253), locking groove (254), ejector (255), conducting rod (256), pressure reduction head (251) bottom surface and processor (252) top surface welded connection, connect (253) top surface and processor (252) bottom surface fixed connection, locking groove (254) inner ring is in the same place with processor (252) outer loop looks superpose, ejector (255) top surface and joint (253) surface contact, conducting rod (256) bottom and locking groove (254) bottom activity block.
3. The energy saver of an LED dimming energy-saving lamp as claimed in claim 2, wherein: the conductive rod (256) comprises a rod body (A1), a conductive layer (A2), a contact plate (A3), a boosting ring (A4), a connecting rod (A5) and a bouncing ball (A6), wherein the conductive layer (A2) is embedded into the right side of the rod body (A1), the bottom of the contact plate (A3) is welded on the top surface of the rod body (A1), the outer ring of the boosting ring (A4) is fixedly connected with the bottom of the rod body (A1), and the left side of the rod body (A1) is connected with the outer layer of the bouncing ball (A6) through the connecting rod (A5).
4. The energy saver of an LED dimming energy-saving lamp as claimed in claim 3, wherein: help and impel ring (A4) including outer ring (A41), spring storehouse (A42), bounce board (A43), limiting plate (A44), bradyseism piece (A45), fixed axle (A46), spring storehouse (A42) fixed mounting is inside outer ring (A41), bounce board (A43) top and spring storehouse (A42) right side superpose together, limiting plate (A44) top surface and outer ring (A41) inner ring be integrated into one piece, bounce board (A43) one side is connected with limiting plate (A44) through bradyseism piece (A45), fixed axle (A46) outer ring and rebound board (A43) bottom fixed connection.
5. The energy saver of an LED dimming energy-saving lamp as claimed in claim 2, wherein: ejector (255) is including fixed shell (B1), connect electric plate (B2), electro-magnet (B3), retrieve ring (B4), ejector pin (B5), magnetic force board (B6), it imbeds in fixed shell (B1) top to connect electric plate (B2), electro-magnet (B3) bottom fixed mounting is inside fixed shell (B1), retrieve ring (B4) outer loop and fixed shell (B1) inside fixed connection, ejector pin (B5) bottom and magnetic force board (B6) top fixed connection, it is in the same place with magnetic force board (B6) top superpose to retrieve ring (B4) bottom.
6. The energy saver of an LED dimming energy-saving lamp as claimed in claim 5, wherein: the recycling ring (B4) comprises a ring shell (B41), a fixing plate (B42), a moving plate (B43), an elastic plate (B44), an inner shaft (B45), a rolling block (B46) and a steel cable (B47), wherein the inner ring of the ring shell (B41) is connected with the top surface of the fixing plate (B42) in a welding mode, the bottom of the moving plate (B43) is fixedly connected with the outer ring of the inner shaft (B45), the inner ring of the rolling block (B46) is fixedly connected with the outer ring of the inner shaft (B45), and one side of the moving plate (B43) is connected with one side of the fixing plate (B42) through the elastic plate (B44).
CN202011003176.4A 2020-09-22 2020-09-22 Energy saver of LED dimming energy-saving lamp Withdrawn CN112146069A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202011003176.4A CN112146069A (en) 2020-09-22 2020-09-22 Energy saver of LED dimming energy-saving lamp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202011003176.4A CN112146069A (en) 2020-09-22 2020-09-22 Energy saver of LED dimming energy-saving lamp

Publications (1)

Publication Number Publication Date
CN112146069A true CN112146069A (en) 2020-12-29

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202011003176.4A Withdrawn CN112146069A (en) 2020-09-22 2020-09-22 Energy saver of LED dimming energy-saving lamp

Country Status (1)

Country Link
CN (1) CN112146069A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112909856A (en) * 2021-01-20 2021-06-04 史东应 Can improve distribution network equipment's of precision fixed equipment

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112909856A (en) * 2021-01-20 2021-06-04 史东应 Can improve distribution network equipment's of precision fixed equipment
CN112909856B (en) * 2021-01-20 2022-10-25 国网浙江省电力有限公司宁波供电公司 Can improve distribution network equipment's of precision fixed equipment

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