CN110748864A - Micro short-circuit protection device for LED light source - Google Patents
Micro short-circuit protection device for LED light source Download PDFInfo
- Publication number
- CN110748864A CN110748864A CN201911156986.0A CN201911156986A CN110748864A CN 110748864 A CN110748864 A CN 110748864A CN 201911156986 A CN201911156986 A CN 201911156986A CN 110748864 A CN110748864 A CN 110748864A
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- Prior art keywords
- base
- light source
- led light
- circuit protection
- protection device
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- 238000009434 installation Methods 0.000 claims abstract description 24
- 238000002347 injection Methods 0.000 claims abstract description 11
- 239000007924 injection Substances 0.000 claims abstract description 11
- 230000017525 heat dissipation Effects 0.000 claims description 33
- 239000000463 material Substances 0.000 claims description 6
- 239000007921 spray Substances 0.000 claims description 6
- 239000011521 glass Substances 0.000 claims description 3
- 230000002146 bilateral effect Effects 0.000 claims 1
- 230000007547 defect Effects 0.000 abstract description 3
- FPWNLURCHDRMHC-UHFFFAOYSA-N 4-chlorobiphenyl Chemical compound C1=CC(Cl)=CC=C1C1=CC=CC=C1 FPWNLURCHDRMHC-UHFFFAOYSA-N 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 206010020649 Hyperkeratosis Diseases 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
Images
Classifications
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- 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
- F21V25/00—Safety devices structurally associated with lighting devices
- F21V25/10—Safety devices structurally associated with lighting devices coming into action when lighting device is overloaded, e.g. thermal switch
-
- 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
- F21V29/60—Cooling arrangements characterised by the use of a forced flow of gas, e.g. air
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- 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
- F21V29/70—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
- F21V29/83—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks the elements having apertures, ducts or channels, e.g. heat radiation holes
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/08—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/10—Light-emitting diodes [LED]
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
- Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
Abstract
The invention discloses a micro short circuit protection device for an LED light source, which comprises a base, wherein a PCB is arranged in the middle of the upper end of the base, a plurality of LED lamps are arranged at the upper end of the PCB, an installation cavity is formed in the upper end wall of the base, an electromagnet is arranged in the installation cavity and positioned at the bottom of the PCB, an installation groove is formed in the bottom of the electromagnet, a magnet piece is arranged in the installation groove, a lower pressing plate is arranged at the bottom of the magnet piece, a switch button is arranged at the bottom of the installation cavity and positioned under the lower pressing plate, a micro air pump is arranged on the inner wall of the base, air injection pipelines are symmetrically communicated with two sides of the outer wall of the micro air pump, the air injection pipelines penetrate through the upward extending end of the base and are provided with. The invention overcomes the defects of the prior art, has reasonable design, effectively avoids fault expansion or fire when the LED light source is slightly short-circuited by the built-in micro short-circuit protection function, and has higher social use value and application prospect.
Description
Technical Field
The invention relates to the technical field of LEDs, in particular to a micro short-circuit protection device for an LED light source.
Background
An LED light source (LED refers to a LightEmittingDiode) is a light emitting diode light source. The light source has the advantages of small volume, long service life, high efficiency and the like, can be continuously used for 10 ten thousand hours, and the LED light source also becomes the mainstream in the illumination field in the future.
After the existing LED light source works and operates for a long time, sudden change of power supply load current can occur, and the phenomenon of circuit breaking is caused. In order to avoid the expansion of the fault or the occurrence of fire, it is necessary to add a micro short circuit protection device.
Therefore, the inventor provides a micro short circuit protection device for an LED light source, with the experience of design development and actual manufacturing in the related industry for many years, and with the existing structure and defects being researched and improved, so as to achieve the purpose of more practical value.
Disclosure of Invention
In order to solve the problems mentioned in the background art, the invention provides a micro short circuit protection device for an LED light source.
In order to achieve the purpose, the invention adopts the following technical scheme:
a micro short circuit protection device for an LED light source comprises a base, wherein a PCB is arranged in the middle of the upper end of the base, a plurality of LED lamps are mounted at the upper end of the PCB, an installation cavity is formed in the upper end wall of the base, an electromagnet is arranged in the installation cavity and positioned at the bottom of the PCB, an installation groove is formed in the bottom of the electromagnet, a magnet piece is arranged in the installation groove, a lower pressing plate is arranged at the bottom of the magnet piece, a switch button is arranged at the bottom of the installation cavity and positioned under the lower pressing plate, a micro air pump is arranged on the inner wall of the base, air injection pipelines are symmetrically communicated with two sides of the outer wall of the micro air pump, a spray head is arranged at the extending end of the air injection pipeline penetrating through the base, an electric valve is arranged on the pipeline of the air injection pipeline, a main heat dissipation pipe is arranged at the center of the bottom of the base, pipelines are symmetrically communicated with two sides of, and the heat dissipation through hole penetrates through the base and extends upwards, the bottom of the base and the outer part of the main heat dissipation pipe are provided with an installation shell, and the inner bottom wall of the installation shell is provided with a heat dissipation fan.
Preferably, the upper end of base is equipped with transparent lamp shade along the edge, and transparent lamp shade adopts the organic glass material to make.
Preferably, the bottom edge of the transparent lampshade is provided with an annular limiting block in a surrounding manner.
Preferably, the upper end edge of base is equipped with the annular spacing groove that corresponds with annular spacing block, and annular spacing block and annular spacing groove threaded connection.
Preferably, the heat dissipation through holes are provided with 3-5 groups and are rectangular through holes.
Preferably, foot pads are fixedly connected to the periphery of the bottom of the base respectively.
Preferably, the foot pad is a member supported by rubber materials, and the bottom of the foot pad is provided with anti-skid lines.
Preferably, the nozzle of the spray head faces the PCB.
Compared with the prior art, the invention has the beneficial effects that:
1. the heat dissipation fan blows air into the transparent lampshade through the main heat dissipation pipe, the communication pipeline and the heat dissipation through hole to dissipate heat, so that heat dissipated by the LED lamp is expelled;
2. when the power load current arranged on the PCB is too large and micro short circuit occurs, the fuse wire can be rapidly fused, so that the power supply is disconnected, and the fault expansion is avoided;
3. because the electro-magnet loses the electricity and connects, the magnet piece drives the holding down plate and drops downwards, just in time presses shift knob when holding down the holding down plate and drops, and shift knob starts the motorised valve this moment to open the outside jet-propelled of miniature air pump, and spout to the PCB board through jet-propelled pipeline, shower nozzle, thereby realize cooling off rapidly, avoid arousing the conflagration, thereby reduce the potential safety hazard as far as.
In conclusion, the invention overcomes the defects of the prior art, has reasonable design, effectively avoids fault expansion or fire when the LED light source is slightly short-circuited by the built-in micro short-circuit protection function, and has higher social use value and application prospect.
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, 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 the drawings without creative efforts.
FIG. 1 is a schematic structural view of example 1 of the present invention;
FIG. 2 is a schematic structural diagram of example 2 of the present invention;
FIG. 3 is an enlarged view of the structure A of the present invention;
fig. 4 is a schematic circuit diagram of the present invention.
In the figure: the LED lamp comprises a base 1, a transparent lampshade 2, a PCB 3, an LED lamp 4, an installation cavity 5, an electromagnet 6, an installation groove 7, a magnet piece 8, a lower pressing plate 9, a switch button 10, a micro air pump 11, an air injection pipeline 12, a spray head 13, an electric valve 14, a heat dissipation through hole 15, a communication pipeline 16, a main heat dissipation pipe 17, a heat dissipation fan 18, an installation shell 19, a foot pad 20 and an annular limiting block 21.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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 some, but not all, embodiments of the present invention. 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.
Example 1
Referring to fig. 1 and 3-4, the LED light source micro short circuit protection device comprises a base 1, a PCB 3 is arranged in the middle of the upper end of the base 1, a plurality of LED lamps 4 are mounted on the upper end of the PCB 3, a mounting cavity 5 is arranged on the upper end wall of the base 1, an electromagnet 6 is arranged in the mounting cavity 5 and at the bottom of the PCB 3, a mounting groove 7 is arranged at the bottom of the electromagnet 6, a magnet sheet 8 is arranged in the mounting groove 7, a lower pressing plate 9 is arranged at the bottom of the magnet sheet 8, a switch button 10 is arranged at the bottom of the mounting cavity 5 and under the lower pressing plate 9, a micro air pump 11 is arranged on the inner wall of the base 1, air injection pipes 12 are symmetrically communicated with the two sides of the outer wall of the micro air pump 11, a spray head 13 is arranged at the upward extending end of the base 1 through the air injection pipe 12, an electric valve 14 is arranged on the pipe of the air injection pipe 12, a main heat dissipation pipe, the end of the communication pipe 16 far from the main heat dissipation pipe 17 is communicated with a plurality of groups of heat dissipation through holes 15, the heat dissipation through holes 15 extend upwards through the base 1, the bottom of the base 1 and the outside of the main heat dissipation pipe 17 are provided with an installation shell 19, the inner bottom wall of the installation shell 19 is provided with a heat dissipation fan 18, and the switch button 10 is electrically connected with the electric valve 14.
Wherein, the upper end of base 1 is equipped with transparent lamp shade 2 along the edge, and transparent lamp shade 2 adopts the organic glass material to make, has good luminousness, and the illuminating effect is strong.
The heat dissipation through holes 15 are provided with 3-5 groups, and the heat dissipation through holes 15 are rectangular through holes, so that the heat dissipation area is increased, and the heat dissipation of the LED lamp 4 is facilitated.
Wherein, the foot pads 20 are fixedly connected to the periphery of the bottom of the base 1, and the foot pads 20 are arranged to play a role in supporting and fixing.
Wherein, callus on the sole 20 is the component that the rubber material supported, and the bottom of callus on the sole 20 is equipped with anti-skidding line, increases surface friction, improves overall structure stability.
Wherein, the spout of shower nozzle 13 is towards PCB board 3, improves jet-propelled precision.
The working principle is as follows: in the invention, when the LED lamp is used, the heat dissipation fan 18 is started, and the heat dissipation fan 18 blows air into the transparent lampshade 2 through the main heat dissipation pipe 17, the communication pipeline 16 and the heat dissipation through hole 15 to dissipate heat, so that heat dissipated by the LED lamp 4 is expelled; and when the power load current that sets up on PCB board 3 is too big, when taking place little short circuit, the fuse can fuse rapidly, thereby the power supply is cut off, avoid the trouble to enlarge, simultaneously because electro-magnet 6 loses the electricity and connects, magnet piece 8 drives holding down plate 9 and drops downwards, just in time press shift knob 10 when holding down plate 9 drops, shift knob 10 starts motorised valve 14 this moment, thereby open miniature air pump 11 and outwards jet-propelled, and through jet-propelled pipeline 12, shower nozzle 13 spouts to PCB board 3, thereby realize rapid cooling, avoid arousing the conflagration, thereby reduce the potential safety hazard as far as possible.
Example 2
Referring to fig. 2-4, the difference between this embodiment and embodiment 1 lies in that the bottom edge of transparent lamp shade 2 is surrounded and is equipped with annular stopper 21, and the upper end edge of base 1 is equipped with the annular spacing groove that corresponds with annular stopper 21, and annular stopper 21 and annular spacing groove threaded connection make things convenient for transparent lamp shade 2 to install and dismantle, the later maintenance of being convenient for.
Other undescribed structures refer to example 1.
The working principle is as follows: in the invention, when the LED lamp is used, the heat dissipation fan 18 is started, and the heat dissipation fan 18 blows air into the transparent lampshade 2 through the main heat dissipation pipe 17, the communication pipeline 16 and the heat dissipation through hole 15 to dissipate heat, so that heat dissipated by the LED lamp 4 is expelled; and when the power load current that sets up on PCB board 3 is too big, when taking place little short circuit, the fuse can fuse rapidly, thereby the power supply is cut off, avoid the trouble to enlarge, simultaneously because electro-magnet 6 loses the electricity and connects, magnet piece 8 drives holding down plate 9 and drops downwards, just in time press shift knob 10 when holding down plate 9 drops, shift knob 10 starts motorised valve 14 this moment, thereby open miniature air pump 11 and outwards jet-propelled, and through jet-propelled pipeline 12, shower nozzle 13 spouts to PCB board 3, thereby realize rapid cooling, avoid arousing the conflagration, thereby reduce the potential safety hazard as far as possible.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.
In the present invention, unless otherwise expressly stated or limited, the terms "disposed," "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; they may be mechanically coupled, directly coupled, or indirectly coupled through intervening agents, both internally and/or in any other manner known to those skilled in the art. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (8)
1. The utility model provides a little short-circuit protection device of LED light source, includes base (1), its characterized in that: the LED lamp structure is characterized in that a PCB (3) is arranged in the middle of the upper end of the base (1), a plurality of LED lamps (4) are installed at the upper end of the PCB (3), an installation cavity (5) is arranged on the upper end wall of the base (1), an electromagnet (6) is arranged in the installation cavity (5) and located at the bottom of the PCB (3), an installation groove (7) is arranged at the bottom of the electromagnet (6), a magnet piece (8) is arranged in the installation groove (7), a lower pressing plate (9) is arranged at the bottom of the magnet piece (8), a switch button (10) is arranged at the bottom of the installation cavity (5) and located under the lower pressing plate (9), a miniature air pump (11) is arranged on the inner wall of the base (1), air injection pipelines (12) are symmetrically communicated with air injection pipelines (12) on two sides of the outer wall of the miniature air pump (11), and a spray nozzle (13), be equipped with motorised valve (14) on the pipeline of jet-propelled pipeline (12), the bottom center department of base (1) is equipped with main radiator pipe (17), and the upper end bilateral symmetry intercommunication of main radiator pipe (17) has communicating pipe (16), the tip intercommunication that main radiator pipe (17) were kept away from in communicating pipe (16) has a plurality of groups heat dissipation through-hole (15), and heat dissipation through-hole (15) run through base (1) and upwards extend, the bottom of base (1) and the outside that is located main radiator pipe (17) are equipped with installation casing (19), and the inner diapire of installation casing (19) is equipped with radiator fan (18).
2. The micro short circuit protection device of the LED light source according to claim 1, wherein: the upper end of base (1) is equipped with transparent lampshade (2) along the edge, and transparent lampshade (2) adopt the organic glass material to make.
3. The micro short circuit protection device of the LED light source according to claim 2, wherein: the bottom edge of the transparent lampshade (2) is provided with an annular limiting block (21) in a surrounding way.
4. The micro short circuit protection device of the LED light source according to claim 3, wherein: the upper end edge of base (1) is equipped with the annular spacing groove that corresponds with annular stopper (21), and annular stopper (21) and annular spacing groove threaded connection.
5. The micro short circuit protection device of the LED light source according to claim 1, wherein: the heat dissipation through holes (15) are provided with 3-5 groups, and the heat dissipation through holes (15) are rectangular through holes.
6. The micro short circuit protection device of the LED light source according to claim 1, wherein: foot pads (20) are fixedly connected to the periphery of the bottom of the base (1) respectively.
7. The micro short circuit protection device of the LED light source according to claim 6, wherein: the foot pad (20) is a component supported by rubber materials, and anti-skid grains are arranged at the bottom of the foot pad (20).
8. The micro short circuit protection device of the LED light source according to claim 1, wherein: the nozzle of the spray head (13) faces the PCB (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911156986.0A CN110748864A (en) | 2019-11-22 | 2019-11-22 | Micro short-circuit protection device for LED light source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911156986.0A CN110748864A (en) | 2019-11-22 | 2019-11-22 | Micro short-circuit protection device for LED light source |
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| Publication Number | Publication Date |
|---|---|
| CN110748864A true CN110748864A (en) | 2020-02-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911156986.0A Pending CN110748864A (en) | 2019-11-22 | 2019-11-22 | Micro short-circuit protection device for LED light source |
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| CN (1) | CN110748864A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111140828A (en) * | 2020-02-21 | 2020-05-12 | 广州领尚灯具有限公司 | LED lamp short-circuit protection device |
| CN114370616A (en) * | 2021-12-21 | 2022-04-19 | 汤磊 | Energy-saving illuminating lamp in new energy automobile |
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| US5235303A (en) * | 1990-07-14 | 1993-08-10 | Xiao Xinkai | Miniaturized universal electromagnet capable of operation in wide voltage range |
| US20120014408A1 (en) * | 2010-07-16 | 2012-01-19 | Petroleum Analyzer Company, Lp | Detecting a Short in an Apparatus and Method for Determining the Thermal Stability of Fluids |
| EP2703711A1 (en) * | 2012-08-28 | 2014-03-05 | Wentai Technology Corporation | LED lamp and heat dissipation device thereof |
| CN107477442A (en) * | 2017-08-30 | 2017-12-15 | 合肥信诺捷科节能服务有限公司 | A kind of LED |
| WO2019014488A2 (en) * | 2017-07-12 | 2019-01-17 | Van Straten George A | Heat source for vehicle illumination assembly and method |
| CN208739498U (en) * | 2018-07-12 | 2019-04-12 | 上海建冰电气科技有限公司 | A kind of intelligent electric machine control protective unit |
| CN209524482U (en) * | 2019-04-25 | 2019-10-22 | 汪传华 | A kind of point light source explosion-proof protection structure |
| KR102014426B1 (en) * | 2019-02-27 | 2019-11-05 | 주식회사 한국항공조명 | Aviation obstruction light |
| CN210638002U (en) * | 2019-11-22 | 2020-05-29 | 安徽润诚机电有限公司 | Micro short-circuit protection device for LED light source |
-
2019
- 2019-11-22 CN CN201911156986.0A patent/CN110748864A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5235303A (en) * | 1990-07-14 | 1993-08-10 | Xiao Xinkai | Miniaturized universal electromagnet capable of operation in wide voltage range |
| US20120014408A1 (en) * | 2010-07-16 | 2012-01-19 | Petroleum Analyzer Company, Lp | Detecting a Short in an Apparatus and Method for Determining the Thermal Stability of Fluids |
| EP2703711A1 (en) * | 2012-08-28 | 2014-03-05 | Wentai Technology Corporation | LED lamp and heat dissipation device thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111140828A (en) * | 2020-02-21 | 2020-05-12 | 广州领尚灯具有限公司 | LED lamp short-circuit protection device |
| CN114370616A (en) * | 2021-12-21 | 2022-04-19 | 汤磊 | Energy-saving illuminating lamp in new energy automobile |
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