CN112050113B - Explosion-proof LED lamp of flame-proof type - Google Patents
Explosion-proof LED lamp of flame-proof type Download PDFInfo
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- CN112050113B CN112050113B CN202010997224.XA CN202010997224A CN112050113B CN 112050113 B CN112050113 B CN 112050113B CN 202010997224 A CN202010997224 A CN 202010997224A CN 112050113 B CN112050113 B CN 112050113B
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- storage tank
- liquid storage
- explosion
- rubber cylinder
- oxygen
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S8/00—Lighting devices intended for fixed installation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/10—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
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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
- F21V19/00—Fastening of light sources or lamp holders
- F21V19/001—Fastening of light sources or lamp holders the light sources being semiconductors devices, e.g. LEDs
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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
- F21V21/00—Supporting, suspending, or attaching arrangements for lighting devices; Hand grips
- F21V21/02—Wall, ceiling, or floor bases; Fixing pendants or arms to the bases
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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
- F21V25/12—Flameproof or explosion-proof arrangements
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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
- F21V29/56—Cooling arrangements using liquid coolants
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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
- F21V29/60—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
- 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]
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
Abstract
The invention discloses an explosion-proof type explosion-proof LED lamp which comprises a lamp holder, wherein an explosion-proof groove is formed in the side wall of the lamp holder, an electrical element is installed in the explosion-proof groove, an LED lamp body is installed at the lower end of the lamp holder, a plurality of clearance holes are formed in the inner wall of the explosion-proof groove, a rubber cylinder is arranged in the explosion-proof groove, a plurality of permanent magnets are fixedly connected to the side wall of the rubber cylinder, a first liquid storage tank is fixedly connected to the upper end of the lamp holder, water is filled in the first liquid storage tank, an air inlet pipe and an air outlet pipe are communicated between the first liquid storage tank and the rubber cylinder, oxygen is filled in the air inlet pipe, and a one-way valve. By arranging the rubber cylinder, the permanent magnet, the air inlet pipe, the air outlet pipe and other components, the paramagnetic property of oxygen can be utilized to force the oxygen to generate thermomagnetic convection in the air inlet pipe, the air outlet pipe and the rubber cylinder, so that heat in the lamp is quickly dissipated, the heat dissipation efficiency of the explosion-proof lamp is greatly improved, and the service life of the lamp is prolonged.
Description
Technical Field
The invention relates to the technical field of LED lamps, in particular to an explosion-proof type explosion-proof LED lamp.
Background
The explosion-proof LED lamp is often used in dangerous places containing explosive gases, wherein the explosion-proof LED lamp is the most common explosion-proof lamp. The lamp encloses all electrical components which may cause explosion in a housing, and a small clearance hole is arranged on the housing, so that even if the interior of the housing explodes, the flame in the housing can greatly reduce the energy when passing through the clearance hole and is not enough to ignite external gas. However, the structure makes the interaction of the air inside and outside the shell difficult, the heat generated by the electrical components during working is slowly dissipated, and the lamp is often at a higher temperature, so that the service life of the lamp is low.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides an explosion-proof LED lamp.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides an explosion-proof LED lamp of flame-proof type, includes the lamp stand, explosion-proof groove has been seted up to the lateral wall of lamp stand, electrical components is installed to explosion-proof inslot, the LED lamp body is installed to the lower extreme of lamp stand, a plurality of interstitial holes have been seted up to the inner wall in explosion-proof groove, explosion-proof inslot is equipped with the rubber tube, a plurality of permanent magnets of the lateral wall fixedly connected with of rubber tube, the first liquid reserve tank of upper end fixedly connected with of lamp stand, first liquid reserve tank intussuseption is filled with water, the intercommunication has intake pipe and outlet duct between first liquid reserve tank and the rubber tube, just the intake pipe intussuseption is filled with oxygen, the check.
Preferably, the reservoir has been seted up to the lateral wall of rubber cylinder, just the reservoir intussuseption is filled with the coolant liquid, the upper end fixedly connected with second liquid reserve tank of lamp stand, the intercommunication has one-way feed liquor pipe and one-way drain pipe between second liquid reserve tank and the reservoir, just the relief valve is installed to the inlet end of outlet duct, the gas pocket is seted up to the interior bottom of second liquid reserve tank.
Preferably, a dust screen is embedded in the clearance hole, small iron sheets are embedded in the dust screen, and the number and the positions of the permanent magnets correspond to the dust screen one by one.
The invention has the following beneficial effects:
1. through the arrangement of the rubber cylinder, the permanent magnet, the air inlet pipe, the air outlet pipe and other components, the paramagnetism of oxygen can be utilized to force the oxygen to generate thermomagnetic convection in the air inlet pipe, the air outlet pipe and the rubber cylinder, so that heat in the lamp is quickly dissipated, the heat dissipation efficiency of the explosion-proof lamp is greatly improved, and the service life of the lamp is prolonged;
2. by arranging the liquid inlet pipe, the liquid outlet pipe, the pressure release valve and other parts, the rubber cylinder can be continuously expanded and contracted in the process of generating thermomagnetic convection by oxygen, so that cooling liquid circularly flows in the liquid inlet pipe and the liquid outlet pipe, and the heat dissipation efficiency of the device is further improved;
3. through set up the dust screen of iron system in the clearance hole, can prevent effectively that the dust from falling on the electrical components in explosion-proof groove and causing lamps and lanterns trouble, the rubber section of thick bamboo that constantly expands and contracts makes the permanent magnet constantly be close to, keep away from the dust screen of iron system simultaneously, can make the dust screen constantly shake to prevent that the dust from gathering on the dust screen and influencing lamps and lanterns and use.
Drawings
Fig. 1 is a schematic structural diagram according to a first embodiment of the present invention;
FIG. 2 is an enlarged view of the structure at A in FIG. 1;
fig. 3 is a schematic structural diagram of a second embodiment of the present invention.
In the figure: the LED lamp comprises a lamp holder 1, a gap hole 101, an explosion-proof groove 2, an LED lamp body 3, a first liquid storage tank 4, an air outlet pipe 5, a one-way valve 51, a pressure release valve 52, a rubber cylinder 6, a liquid storage tank 61, an air inlet pipe 7, a second liquid storage tank 8, a one-way liquid outlet pipe 9, a one-way liquid inlet pipe 10, a permanent magnet 11 and a dust screen 12.
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.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and 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.
The first embodiment is as follows:
referring to fig. 1-2, an explosion-proof type explosion-proof LED lamp comprises a lamp holder 1, an explosion-proof groove 2 is formed in the side wall of the lamp holder 1, an electrical component is installed in the explosion-proof groove 2, an LED lamp body 3 is installed at the lower end of the lamp holder 1, and a plurality of clearance holes 101 are formed in the inner wall of the explosion-proof groove 2. Be equipped with the rubber cylinder 6 in the explosion-proof tank 2, reservoir 61 has been seted up to the lateral wall of rubber cylinder 6, and the intussuseption of reservoir 61 is filled with the coolant liquid, and the upper end fixedly connected with second liquid reserve tank 8 of lamp stand 1, the intercommunication has one-way feed liquor pipe 10 and one-way drain pipe 9 between second liquid reserve tank 8 and the reservoir 61, and the inlet end of outlet duct 5 installs relief valve 52, and gas pocket 81 has been seted up to the interior bottom of second liquid reserve tank 8.
It should be noted that, by setting the air hole 81, the air pressure inside and outside the second liquid storage tank 8 can be kept balanced, so that the cooling liquid can smoothly flow in a circulating manner through the one-way liquid inlet pipe 10 and the one-way liquid outlet pipe 9, the one-way liquid inlet pipe 10 only allows the cooling liquid to flow from the liquid storage tank 61 to the second liquid storage tank 8, the one-way liquid outlet pipe 9 only allows the cooling liquid to flow from the second liquid storage tank 8 to the liquid storage tank 61, and specifically, a one-way valve can be installed in the liquid inlet pipe or the liquid outlet pipe to realize the effect of one-way flow.
The side wall of the rubber cylinder 6 is fixedly connected with a plurality of permanent magnets 11, and in practical application, a uniform magnetic field does not exist, so that each permanent magnet 11 can form a non-uniform magnetic field and can attract paramagnetic gas to flow towards the permanent magnet. The first liquid reserve tank 4 of upper end fixedly connected with of lamp stand 1, first liquid reserve tank 4 intussuseption is filled with water, and the intercommunication has intake pipe 7 and outlet duct 5 between first liquid reserve tank 4 and the rubber cylinder 6, and intake pipe 7 intussuseption is filled with oxygen, and the check valve 51 is installed to the end of giving vent to anger of outlet duct 5, and check valve 51 only allows gas to flow to first liquid reserve tank 4 from outlet duct 5, prevents the water reflux in the first liquid reserve tank 4.
It should be noted that, because oxygen is paramagnetic gas, it will be attracted by the uneven magnetic field formed by each permanent magnet 11 and enter the rubber tube 6, and when oxygen enters the air inlet tube 7 portion in the explosion-proof tank 2, it will be heated and heated, and the attraction force of the magnetic field is greatly reduced, and it can be pushed by the oxygen with high magnetic susceptibility and low temperature in the air inlet tube 7 outside the explosion-proof tank 2 and discharged into the air outlet tube 5, forming thermomagnetic convection.
When the explosion-proof lamp works, electrical components in the explosion-proof tank 2 can generate a large amount of heat, so that the temperature in the explosion-proof tank 2 is increased. The air inlet pipe 7 in the anti-explosion groove 2 is heated, so that oxygen in the air inlet pipe 7 is heated, the magnetic field attraction formed by the permanent magnet 11 is reduced, the oxygen temperature of the air inlet pipe 7 outside the anti-explosion groove 2 is lower, the magnetic field attraction is larger, the oxygen at higher temperature can be pushed to flow to the rubber tube 6, and the oxygen is gradually discharged into the first liquid storage tank 4 along the air outlet pipe 5 along with continuous pushing of subsequent air flow, and the oxygen can fully contact with water in the first liquid storage tank 4 and then flows into the air inlet pipe 7 because the oxygen is insoluble in water.
The heat absorbed by the oxygen is transferred to the water body and is changed into gas with lower temperature again. So can make oxygen circulate and flow in intake pipe 7 and outlet duct 5 to constantly distribute away the heat that electrical components produced in explosion-proof groove 2, but the temperature in greatly reduced explosion-proof groove 2 to prevent that explosion-proof lamp from producing high temperature, prolong the life of lamps and lanterns.
Meanwhile, due to the action of the pressure release valve 52, the oxygen flowing into the rubber tube 6 cannot be discharged immediately, but is gradually accumulated in the rubber tube 6 to expand the rubber tube 6, and the oxygen in the rubber tube 6 also extrudes the inner wall of the rubber tube 6 to reduce the liquid storage tank 61, so that the cooling liquid in the liquid storage tank 61 is extruded into the second liquid storage tank 8 along the one-way liquid outlet pipe 9. When the air pressure in the rubber cylinder 6 rises to the threshold value of the pressure release valve 52, the pressure release valve 52 is opened, the oxygen in the rubber cylinder 6 is immediately discharged into the first liquid storage tank 4 along the air outlet pipe 5, after the oxygen in the rubber cylinder 6 is discharged, the rubber cylinder 6 is also reduced and recovered, the space of the liquid storage tank 61 is increased, and the cooling liquid in the second liquid storage tank 8 is pumped back to the liquid storage tank 61. Therefore, in the process of circulating flow of oxygen, cooling liquid is forced to flow in a one-way circulating manner in the one-way liquid outlet pipe 9 and the one-way liquid inlet pipe 10, and the heat dissipation efficiency of the lamp is further improved. It should be noted that the first liquid storage tank 4 is also made of a rubber material with good elasticity, so that the first liquid storage tank 4 can be contracted when oxygen is accumulated in the input rubber tube 6, and the first liquid storage tank 4 can be recovered when oxygen is discharged into the first liquid storage tank 4 from the air outlet tube 5.
Example two:
referring to fig. 3, different from the first embodiment, a dust screen 12 is embedded in the clearance hole 101, a small iron piece is embedded in the dust screen 12, the dust screen 12 is made of an elastic material, and the number and the positions of the permanent magnets 11 correspond to those of the dust screen 12 one by one. Specifically, the rubber tube 6 may be vertically disposed with reference to fig. 3, and disposed at the center of the anti-explosion groove 2, and at this time, the permanent magnets 11 on the side wall of the rubber tube 6 may correspond to the dust screens 12 one to one.
By arranging the dustproof net 12, objects such as dust, sundries or insects can be effectively prevented from entering the explosion-proof tank 2 through the clearance hole 101 and being accumulated on the electrical elements in the explosion-proof tank 2 to influence the heat dissipation effect of the electrical elements or cause poor contact. Foreign matters such as external dust can be blocked by the dust screen 12 and attached to the outer side of the dust screen 12, and in the continuous expansion and contraction process of the rubber cylinder 6, the permanent magnet 11 on the side wall of the rubber cylinder 6 is continuously close to and away from the dust screen 12, when the permanent magnet 11 is close to the dust screen 12, the small iron sheet is attracted by magnetic force and drives the dust screen 12 to be sunken in the explosion-proof groove 2, and when the permanent magnet 11 is away from the dust screen 12, the magnetic acting force received by the small iron sheet is weak, and the elastic dust screen 12 can be automatically recovered. Therefore, in the expansion and contraction process of the rubber cylinder 6, the dustproof net 12 continuously shakes, so that sundries such as dust attached to the dustproof net can be shaken off and prevented from being attached to the dustproof net, the good permeability of the dustproof net 12 is kept, and the heat dissipation effect of the lamp is not affected.
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 (1)
1. An explosion-proof type explosion-proof LED lamp comprises a lamp holder (1), an explosion-proof groove (2) is arranged on the side wall of the lamp holder (1), electrical components are arranged in the explosion-proof groove (2), an LED lamp body (3) is arranged at the lower end of the lamp holder (1), a plurality of clearance holes (101) are arranged on the inner wall of the explosion-proof groove (2), it is characterized in that a rubber cylinder (6) is arranged in the explosion-proof groove (2), the side wall of the rubber cylinder (6) is fixedly connected with a plurality of permanent magnets (11), the upper end of the lamp holder (1) is fixedly connected with a first liquid storage tank (4), the first liquid storage tank (4) is filled with water, an air inlet pipe (7) and an air outlet pipe (5) are communicated between the first liquid storage tank (4) and the rubber cylinder (6), the air inlet pipe (7) is filled with oxygen, and the air outlet end of the air outlet pipe (5) is provided with a one-way valve (51);
a liquid storage tank (61) is formed in the side wall of the rubber cylinder (6), cooling liquid is filled in the liquid storage tank (61), a second liquid storage tank (8) is fixedly connected to the upper end of the lamp holder (1), a one-way liquid inlet pipe (10) and a one-way liquid outlet pipe (9) are communicated between the second liquid storage tank (8) and the liquid storage tank (61), a pressure release valve (52) is installed at the air inlet end of the air outlet pipe (5), and an air hole (81) is formed in the inner bottom of the second liquid storage tank (8);
a dust screen (12) is embedded in the clearance hole (101), small iron sheets are embedded in the dust screen (12), and the number and the positions of the permanent magnets (11) correspond to those of the dust screen (12) one by one;
when the explosion-proof lamp works, electrical elements in the explosion-proof groove (2) can generate a large amount of heat, so that the temperature in the explosion-proof groove (2) is increased; the air inlet pipe (7) in the explosion-proof groove (2) is partially heated, so that oxygen in the air inlet pipe (7) is heated and is reduced by magnetic field attraction formed by the permanent magnet (11), the oxygen outside the explosion-proof groove (2) is lower in temperature and higher in magnetic field attraction, the oxygen at higher temperature can be pushed to flow to the rubber tube (6) and is gradually discharged into the first liquid storage tank (4) along the air outlet pipe (5) along with continuous pushing of subsequent air flow, and the oxygen can fully contact with water in the first liquid storage tank (4) and then flows into the air inlet pipe (7) because the oxygen is insoluble in water after entering the first liquid storage tank (4);
meanwhile, due to the action of the pressure release valve (52), oxygen flowing into the rubber cylinder (6) cannot be immediately discharged, but is gradually accumulated in the rubber cylinder (6) to expand the rubber cylinder (6), and the oxygen in the rubber cylinder (6) can also extrude the inner wall of the rubber cylinder (6) to reduce the liquid storage tank (61), so that the cooling liquid in the liquid storage tank (61) is extruded into the second liquid storage tank (8) along the one-way liquid outlet pipe (9); when the air pressure in the rubber cylinder (6) rises to the threshold value of the pressure release valve (52), the pressure release valve (52) is opened, oxygen in the rubber cylinder (6) is immediately discharged into the first liquid storage tank (4) along the air outlet pipe (5), after the oxygen in the rubber cylinder (6) is discharged, the rubber cylinder (6) is reduced and recovered, the space of the liquid storage tank (61) is increased, and cooling liquid in the second liquid storage tank (8) is pumped back to the liquid storage tank (61); therefore, in the circulating flow process of oxygen, cooling liquid is forced to flow in a one-way circulating manner in the one-way liquid outlet pipe (9) and the one-way liquid inlet pipe (10), and the heat dissipation efficiency of the lamp is further improved; when oxygen is accumulated in the input rubber cylinder (6), the first liquid storage tank (4) can be contracted, and when the oxygen is discharged into the first liquid storage tank (4) from the air outlet pipe (5), the first liquid storage tank (4) can be recovered;
in the continuous expansion and contraction process of the rubber cylinder (6), the permanent magnet (11) on the side wall of the rubber cylinder (6) is continuously close to and away from the dustproof net (12), when the permanent magnet (11) is close to the dustproof net (12), the small iron sheet is attracted by magnetic force to drive the dustproof net (12) to be sunken into the explosion-proof groove (2), and when the permanent magnet (11) is away from the dustproof net (12), the magnetic acting force borne by the small iron sheet is weak, and the elastic dustproof net (12) can be automatically recovered; therefore, the dust screen (12) can shake continuously in the expansion and contraction process of the rubber cylinder (6), dust and other sundries attached to the dust screen can be shaken off, and meanwhile, the dust and the sundries are prevented from being attached, so that the good permeability of the dust screen (12) is kept.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010997224.XA CN112050113B (en) | 2020-09-21 | 2020-09-21 | Explosion-proof LED lamp of flame-proof type |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010997224.XA CN112050113B (en) | 2020-09-21 | 2020-09-21 | Explosion-proof LED lamp of flame-proof type |
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| Publication Number | Publication Date |
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| CN112050113A CN112050113A (en) | 2020-12-08 |
| CN112050113B true CN112050113B (en) | 2021-03-19 |
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| CN202010997224.XA Active CN112050113B (en) | 2020-09-21 | 2020-09-21 | Explosion-proof LED lamp of flame-proof type |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112413475B (en) * | 2020-12-14 | 2023-05-02 | 荣朗(东莞)光电科技有限公司 | Safe LED ceiling lamp with short-circuit prevention function |
| CN113237041A (en) * | 2021-05-27 | 2021-08-10 | 宝德照明集团有限公司 | Explosion-proof energy-saving LED lamp |
| CN115539922B (en) * | 2022-10-18 | 2023-10-10 | 深圳市红方光电照明有限公司 | LED industrial and mining lamp that protectiveness is good |
| CN115962455B (en) * | 2022-12-30 | 2023-11-14 | 广东信华电器有限公司 | Explosion-proof LED street lamp |
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| CN1281746A (en) * | 1999-10-17 | 2001-01-31 | 李榕生 | Gas magnetic separation equipment and its application |
| CN1837030A (en) * | 2006-04-18 | 2006-09-27 | 三峡大学 | Paramagnetic laminar-flow self-aggregation type oxygen enrichment device |
| CN102042512A (en) * | 2009-10-12 | 2011-05-04 | 富准精密工业(深圳)有限公司 | Lamp |
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| CN210511594U (en) * | 2019-11-12 | 2020-05-12 | 常州市双佳电器有限公司 | Self-radiating LED explosion-proof lamp |
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| CN112050113A (en) | 2020-12-08 |
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