CN104180207B - explosion-proof lamp structure - Google Patents
explosion-proof lamp structure Download PDFInfo
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- CN104180207B CN104180207B CN201310199014.6A CN201310199014A CN104180207B CN 104180207 B CN104180207 B CN 104180207B CN 201310199014 A CN201310199014 A CN 201310199014A CN 104180207 B CN104180207 B CN 104180207B
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- explosion
- light
- proof lamp
- lamp structure
- main casing
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- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
A kind of explosion-proof lamp structure, including fore shell, trim ring, translucent cover and light source；Described fore shell includes main casing, light resource installing section and boss；Light resource installing section is the round table-like structure of hollow, and including the first stub end and the first little head end of the closing relative with described first stub end of opening, described first stub end is connected on the inner peripheral of described main casing one end；Boss is formed by described first opening outer peripheral edge is outwardly, and described boss inner peripheral offers female thread, and described light resource installing section is one-body molded with described main casing and described boss；Described translucent cover is fixed on described fore shell by described trim ring, and described translucent cover and described fore shell surround light-source chamber jointly；Light source is contained in described light-source chamber, and is arranged on the lateral surface of described light resource installing section, and the heat that described light source sends is transferred to described main casing through described light resource installing section, and is externally dissipated by described main casing.Above-mentioned explosion-proof lamp structure heat-sinking capability is relatively strong and reliability is higher.
Description
Technical field
The present invention relates to lighting engineering, particularly relate to a kind of explosion-proof lamp structure.
Background technology
Light fixture, refers to printing opacity, distributes and changes the photodistributed utensil of light source, useful including institute in addition to light source
In the whole parts and components fixed and needed for protection light source, and it is connected necessary circuit adnexa with power supply.
Explosion-proof lamp (explosion-proof lamp) is the one in many light fixtures, has explosion-proof performance, mainly has
Explosion-proof lamp, explosion-proofing safe light fixture, mobile model explosion-proof lamp etc..
For traditional explosion-proof lamp, owing to it works the most in high temperature environments, therefore it is good to require that light fixture has
Good thermal diffusivity.But, for traditional explosion-proof lamp, owing to meet the demand of its sealing,
Its often structure complex, light source cannot dispel the heat the most to external world, and then makes light source for a long time at high temperature
Working under environment, its working life is substantially reduced.
Summary of the invention
Based on this, it is necessary to provide the explosion-proof lamp structure of a kind of good heat dispersion performance.
A kind of explosion-proof lamp structure, including:
Fore shell, is made from a material that be thermally conductive, and described fore shell includes:
Main casing, for the tubular structure of both ends open, including the first opening, outside described main casing
Multiple fin it is provided with spaced reciprocally on sidewall；
Light resource installing section, for the round table-like structure of hollow, including the first stub end of opening and with described
First little head end of the closing that the first stub end is relative, described first stub end is connected to described main casing one end
Inner peripheral on, described light resource installing section by described first opening close；And
Boss, is formed by described first opening outer peripheral edge is outwardly, and described boss is ring-type, its
Cross section is " L " character form structure, and described boss inner peripheral offers female thread, described light resource installing section with
Described main casing and described boss are one-body molded；
Trim ring, it has relative inner surface and outer surface, and the outer surface of described trim ring is provided with external screw thread,
The inner surface of described trim ring is provided with protuberance, and described protuberance is circulus, and described boss is sheathed on described
Outside trim ring, the external screw thread of described trim ring is screwed with the female thread of described boss；
Translucent cover, including the second opening, the second opening of translucent cover is provided with flanging, described flanging
Periphery is bonding with the inner surface of described trim ring, and described flanging offsets with described protuberance, so that described
Bright cover is fixed on described fore shell by described trim ring, and described translucent cover and described fore shell surround light-source chamber jointly；
And
Light source, is contained in described light-source chamber, and is arranged on the lateral surface of described light resource installing section, described
The heat that light source sends is transferred to described main casing through described light resource installing section, and by described main casing to outgoing
Dissipate.
Wherein in an embodiment, the outer surface of described trim ring is further opened with annular seal groove, described every
Quick-fried type explosion-proof lamp also includes that sealing ring, described sealing ring are arranged in described annular seal groove, described sealing
Enclose and described trim ring is sealed with the described fore shell place of screwing togather.
Wherein in an embodiment, described light source includes multiple LED and substrate, between the plurality of LED
Every being packaged on described substrate, described substrate fits with the lateral surface of described light resource installing section.
Wherein in an embodiment, the lateral surface of described light resource installing section is made up of multistage strip plane,
Described substrate fits with described strip plane.
Wherein in an embodiment, described strip plane be respectively arranged at two ends with two projections, described base
Plate is limited between said two projection.
Wherein in an embodiment, described main casing also includes that threeth relative with described first opening opens
Mouth end；Described explosion-proof lamp structure also includes that back cover, described back cover are the box like structure of one end open, described
Back cover is closed to described 3rd opening, and described back cover and described fore shell surround electric chamber, described light source jointly
Described electric chamber is separated by installation portion with described light-source chamber.
Wherein in an embodiment, also including driving assembly, described driving assembly is fixed on described electric chamber
In, and electrically connect with described light source, described driving assembly includes metal shell and is packaged in described metal shell
Interior electronics silica gel.
Wherein in an embodiment, the first opening of described main casing is further opened with axial wire guide,
Described electric chamber is conducted by described wire guide with described light-source chamber；Described explosion-proof lamp structure also includes sealing
Joint and wire, described seal nipple is arranged in described wire guide, and is covered by described wire guide, described
Wire wears described wire guide by described seal nipple, described by driving assembly by described wire and institute
State light source electrical connection.
Wherein in an embodiment, also include that reflector, described reflector include round table-like main body and curved
Folding part, described main body includes the second largest head end of opening and the second little head end relative with described second largest head end,
Described main body is sheathed on outside described light resource installing section, and the sidewall of described main body is offered through hole, and described light source is worn
Crossing described through hole and be positioned at outside described main body, described kink is by the outer peripheral edge sidewall of described second largest head end
Extend and be bent to form, between the sidewall of described kink and described main body, forming the angle less than 90 degree.
Wherein in an embodiment, the second little head end outwardly formation hemisphere face of described reflector.
Above-mentioned explosion-proof lamp structure, compared with traditional explosion-proof lamp structure, at least has the advantage that
First, the fore shell of above-mentioned explosion-proof lamp structure is formed in one structure, and is made from a material that be thermally conductive.Light
Source is arranged in the light resource installing section of fore shell, and the heat produced during its work is transferred to main through light resource installing section
Housing, and externally dissipated by main casing, the heat-sinking capability of its whole explosion-proof lamp structure is stronger.
Meanwhile, distribution of light sources is on the lateral surface of round table-like light resource installing section, and reflects through reflector,
Its light sent can dissipate to surrounding uniformly, improves out the uniformity of light.
Additionally, above-mentioned explosion-proof lamp structure uses the multiple type of explosion proof construc tion such as flame proof, encapsulation combined, have good
Good reliability, safety is higher, and the life-span is more permanent.
Accompanying drawing explanation
Fig. 1 is the sectional view of the explosion-proof lamp structure in present pre-ferred embodiments；
Fig. 2 is the concrete structure figure of explosion-proof lamp structure shown in Fig. 1；
Fig. 3 is the partial enlarged drawing in explosion-proof lamp structure shown in Fig. 1 at A；
Fig. 4 is the partial enlarged drawing in explosion-proof lamp structure shown in Fig. 1 at B；
Fig. 5 is the sectional view of another angle of explosion-proof lamp structure shown in Fig. 1.
Detailed description of the invention
For the ease of understanding the present invention, below with reference to relevant drawings, the present invention is described more fully.
Accompanying drawing gives the better embodiment of the present invention.But, the present invention can come in many different forms
Realize, however it is not limited to embodiments described herein.On the contrary, provide the purpose of these embodiments to be
Make the disclosure is understood more thorough comprehensively.
It should be noted that when element is referred to as " being fixed on " another element, and it can be directly at another
On individual element or element placed in the middle can also be there is.When an element is considered as " connection " another yuan
Part, it can be directly to another element or may be simultaneously present centering elements.Used herein
Term " vertical ", " level ", "left", "right" and similar statement simply to illustrate that mesh
, being not offered as is unique embodiment.
Unless otherwise defined, all of technology used herein and scientific terminology and the technology belonging to the present invention
The implication that the technical staff in field is generally understood that is identical.The art used the most in the description of the invention
Language is intended merely to describe the purpose of specific embodiment, it is not intended that in limiting the present invention.Used herein
Term " and/or " include the arbitrary and all of combination of one or more relevant Listed Items.
Referring to Fig. 1, the explosion-proof lamp structure 100 in present pre-ferred embodiments, including fore shell 110, pressure
Circle 120, sealing ring 130, translucent cover 140, light source 150, reflector 160, back cover 170, driving assembly
180, seal nipple 190a and wire 190b.
Fore shell 110 is made from a material that be thermally conductive.Fore shell 110 includes main casing 112, light resource installing section 114 and convex
Platform 116.Main casing 112 is the tubular structure of both ends open.Main casing 112 includes the first opening 112a
And the threeth opening 112b relative for opening 112a with first.See also Fig. 2, main casing 112
Multiple fin 112c it is provided with spaced reciprocally, to improve the heat-sinking capability of main casing 112 on lateral wall.
Light resource installing section 114 is the round table-like structure of hollow.Light resource installing section 114 includes the first big of opening
Head end 114a and the first little head end 114b of the closing relative for stub end 114a with first.First stub end 114a
Being connected on the inner peripheral of main casing 112 one end, the first opening 112a is closed by light resource installing section 114.
The lateral surface of light resource installing section 114 is made up of multistage strip plane.
Boss 116 is formed by the first opening 112a outer peripheral edge is outwardly.Boss 116 is ring-type, and it is horizontal
Cross section is " L " character form structure.Female thread is offered on boss 116 inner peripheral.
Concrete fore shell 110 be aluminum alloy die casting the most in the present embodiment, and it has good heat conductivity and by force
Degree, quality is the lightest simultaneously.Light resource installing section 114 is one-body molded with main casing 112 and boss 116 so that
Heat conducts on fore shell 110 and is easier to.It is appreciated that fore shell 110 can also be by other Heat Conduction Material system
Become, be not limited to aluminum alloy materials.
Seeing also Fig. 3, trim ring 120 has relative inner surface 122 and outer surface 124.Trim ring 120
Outer surface 124 be provided with external screw thread.Boss 116 is sheathed on outside trim ring 120, the external screw thread of trim ring 120
It is screwed with the female thread on boss 116.The inner surface 122 of trim ring 120 is provided with protuberance 122a, protrudes
Portion 122a is circulus.Protuberance 122a is the end of the inner surface 122 in trim ring 120, makes trim ring
The cross section of 120 is " L " character form structure.In other embodiments, protuberance 122a may also set up in trim ring
The middle part of the inner surface 122 of 120, the cross section making trim ring 120 is " T " character form structure.
It is further opened with annular seal groove 124a on the outer surface 124 of trim ring 120.Sealing ring 130 is arranged at ring
In shape seal groove 124a.The place of screwing togather of trim ring 120 with fore shell 110 is sealed by sealing ring 130, forms screw thread
Explosion separation structure, meets the requirement of explosion-proof lamp.
The cross section of translucent cover 140 is parabola shaped.Translucent cover 140 includes the second opening (figure is not marked),
Second opening is provided with flanging 142.Flanging 142 is circulus.The periphery of flanging 142 by glue with
The inner surface 122 of trim ring 120 is bonding, and flanging 142 offsets with protuberance 122a, makes translucent cover 140
It is fixed on fore shell 110 by trim ring 120.Translucent cover 140, trim ring 120 and fore shell 110 are collectively forming close
The light-source chamber (figure is not marked) of envelope.Light-source chamber can house the significant components such as light source 150.Flanging 142 and protuberance
122a offsets, and can effectively prevent translucent cover 140 from deviating from from fore shell 110.
It is appreciated that the cross section of translucent cover 140 is not limited to parabola shaped, it is also possible to for shapes such as semicircles.
Light source 150 is contained in light-source chamber, and is arranged on the lateral surface of light resource installing section 114.Light source 150
The heat sent is transferred to main casing 112 through light resource installing section 114, and is externally dissipated by main casing 112.
Seeing also Fig. 4, light source 150 includes multiple LED 152 and substrate 154.Substrate 154 can
For aluminium base, it has the good capacity of heat transmission.Multiple LED 152 interval is packaged on substrate 154,
Substrate 154 fits with the lateral surface of light resource installing section 114.The most in the present embodiment, explosion-proof lamp is signed an undertaking
Structure 100 also includes tabletting (not shown), and tabletting is fixed on light resource installing section 114 by threaded fastener.Pressure
Sheet pressure holding substrate 154, to be fixed on the lateral surface of light resource installing section 114 by substrate 154.
The lateral surface of light resource installing section 114 be made up of multistage strip plane (figure do not mark), substrate 154 and
Strip plane fits.Strip plane be respectively arranged at two ends with two projections (figure do not mark), substrate 154
It is limited between two projections.
In above-mentioned explosion-proof lamp structure 100, fore shell 110 is made from a material that be thermally conductive.Before light source 150 is arranged at
In the light resource installing section 114 of shell 110, the heat produced during its work is transferred to main through light resource installing section 114
Housing 112, and externally dissipated by main casing 112, main casing 112 is outside is provided with fin 112c.Before whole
Shell 110 is formed in one structure, improves above-mentioned explosion-proof lamp structure 100 heat-sinking capability.Meanwhile, light source
On 150 lateral surface being distributed in round table-like light resource installing section 114, its light sent can be uniformly to surrounding
Dissipate, improve out the uniformity of light.
Being appreciated that in other embodiments, above-mentioned explosion-proof lamp structure 100 may be used without other type of
Light fixture replaces LED 152 as light source 150.Additionally, substrate 154 can also make arc surfaced, with
The lateral surface of the light resource installing section 114 that substrate 154 fits can also be for corresponding arc surfaced.
Reflector 160 includes round table-like main body 162 and kink 164.The lateral surface of reflector 160 passes through
Electroplating processes.Main body 162 includes the second largest head end 162a and relative with second largest head end 162a of opening
Two little head end 162b.Main body 162 is sheathed on outside light resource installing section 114.Main body 162 top is tight by screw thread
Firmware is fixed on the first little head end 114b of light resource installing section 114.Through hole is offered on the sidewall of main body 162
(figure is not marked), light source 150 is through through hole and is positioned at outside main body 162.
Kink 164 is extended by the outer peripheral edge sidewall of second largest head end 162a and is bent to form, kink 164
And form the angle less than 90 degree between the sidewall of main body 162.Light source 150 is distributed in light resource installing section 114
At the kink 164, the light that light source 150 is launched to kink 164 direction through kink 164 to
Translucent cover 140 direction is reflected, to maximally utilize the light that light source 150 sends.
See also Fig. 5, the second little head end 162b outwardly formation hemisphere face of reflector 160.Curved
The light of folding part 164 reflection repeatedly reflects in light-source chamber and reflects, and its part can be irradiated in reflector 160
On second little head end 162b.Second little head end 162b is hemisphere face, is irradiated on the second little head end 162b
Luminous reflectance, to the underface of this explosion-proof lamp structure 100, improves the brightness immediately below explosion-proof lamp structure 100.
It is appreciated that, when the light that light source 150 sends is more uniform, reflector 160 can omit.
Referring to Fig. 1, back cover 170 is the box like structure of one end open.Back cover 170 is closed to the 3rd and opens
Mouth end 112b, back cover 170 and fore shell 110 surround electric chamber (figure is not marked) jointly.Light resource installing section 114 will
Electrically chamber separates with light-source chamber.
Drive assembly 180 to be fixed on electric intracavity, and electrically connect with light source 150.Assembly 180 is driven to include
Metal shell (figure is not marked) and the electronics silica gel (not shown) being packaged in metal shell, to meet pouring type
The requirement of explosion proof of light fixture.
Axial wire guide (figure is not marked) it is further opened with on first opening 112a of main casing 112.Wire guide
Electric chamber is conducted with light-source chamber.Seal nipple 190a is arranged in wire guide, and is covered by wire guide,
Wire 190b wears wire guide by seal nipple 190a, by drive assembly 180 by wire 190b with
Light source 150 electrically connects.
Above-mentioned explosion-proof lamp structure 100, compared with traditional explosion-proof lamp structure, at least has the advantage that
First, the fore shell 110 of above-mentioned explosion-proof lamp structure 100 is formed in one structure, and by Heat Conduction Material
Make.Light source 150 is arranged in the light resource installing section 114 of fore shell 110, the heat warp produced during its work
Cross light resource installing section 114 and be transferred to main casing 112, and externally dissipated by main casing 112, its whole explosion-proof lamp
The heat-sinking capability of lamps structure 100 is stronger.
Meanwhile, light source 150 is distributed on the lateral surface of round table-like light resource installing section 114, and through reflection
Device 160 reflects, and its light sent can dissipate to surrounding uniformly, improves out the uniformity of light.
Additionally, above-mentioned explosion-proof lamp structure 100 uses the multiple type of explosion proof construc tion such as flame proof, encapsulation combined, tool
Having good reliability, safety is higher, and the life-span is more permanent.
Embodiment described above only have expressed the several embodiments of the present invention, and it describes more concrete and detailed,
But therefore can not be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that, for this area
Those of ordinary skill for, without departing from the inventive concept of the premise, it is also possible to make some deformation and
Improving, these broadly fall into protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be with appended
Claim is as the criterion.
Claims (8)
1. an explosion-proof lamp structure, it is characterised in that including:
Fore shell, is made from a material that be thermally conductive, and described fore shell includes:
Main casing, for the tubular structure of both ends open, including the first opening, outside described main casing
Multiple fin it is provided with spaced reciprocally on sidewall；
Light resource installing section, for the round table-like structure of hollow, including the first stub end of opening and with described
First little head end of the closing that the first stub end is relative, described first stub end is connected to described main casing one end
Inner peripheral on, described light resource installing section by described first opening close；And
Boss, is formed by described first opening outer peripheral edge is outwardly, and described boss is ring-type, its
Cross section is " L " character form structure, and described boss inner peripheral offers female thread, described light resource installing section with
Described main casing and described boss are one-body molded；
Trim ring, it has relative inner surface and outer surface, and the outer surface of described trim ring is provided with external screw thread,
The inner surface of described trim ring is provided with protuberance, and described protuberance is circulus, and described boss is sheathed on described
Outside trim ring, the external screw thread of described trim ring is screwed with the female thread of described boss；
Translucent cover, including the second opening, the second opening of translucent cover is provided with flanging, described flanging
Periphery is bonding with the inner surface of described trim ring, and described flanging offsets with described protuberance, so that described
Bright cover is fixed on described fore shell by described trim ring, and described translucent cover and described fore shell surround light-source chamber jointly；
And
Light source, is contained in described light-source chamber, and is arranged on the lateral surface of described light resource installing section, described
The heat that light source sends is transferred to described main casing through described light resource installing section, and by described main casing to outgoing
Dissipate；
Described explosion-proof lamp structure also includes that reflector, described reflector include round table-like main body and kink,
Described main body includes the second largest head end of opening and the second little head end relative with described second largest head end, described
Main body is sheathed on outside described light resource installing section, and the sidewall of described main body is offered through hole, and described light source passes institute
Stating through hole and be positioned at outside described main body, described kink is extended by the outer peripheral edge sidewall of described second largest head end
And be bent to form, form the angle less than 90 degree between the sidewall of described kink and described main body；
The second little head end outwardly formation hemisphere face of described reflector.
Explosion-proof lamp structure the most according to claim 1, it is characterised in that the outer surface of described trim ring
On be further opened with annular seal groove, described explosion-proof lamp structure also includes that sealing ring, described sealing ring are arranged at
In described annular seal groove, described trim ring is sealed by described sealing ring with the described fore shell place of screwing togather.
Explosion-proof lamp structure the most according to claim 1, it is characterised in that described light source includes multiple
LED and substrate, the plurality of LED interval is packaged on described substrate, and described substrate is pacified with described light source
The lateral surface in dress portion fits.
Explosion-proof lamp structure the most according to claim 3, it is characterised in that described light resource installing section
Lateral surface is made up of multistage strip plane, and described substrate fits with described strip plane.
Explosion-proof lamp structure the most according to claim 4, it is characterised in that described strip plane
Being respectively arranged at two ends with two projections, described substrate is limited between said two projection.
Explosion-proof lamp structure the most according to claim 1, it is characterised in that described main casing also includes
Threeth opening relative with described first opening；Described explosion-proof lamp structure also includes back cover, described after
Shell is the box like structure of one end open, and described back cover is closed to described 3rd opening, and described back cover is with described
Fore shell surrounds electric chamber jointly, and described electric chamber is separated by described light resource installing section with described light-source chamber.
Explosion-proof lamp structure the most according to claim 6, it is characterised in that also include driving assembly,
Described driving assembly is fixed on described electric intracavity, and electrically connects with described light source, and described driving assembly includes
Metal shell and the electronics silica gel being packaged in described metal shell.
Explosion-proof lamp structure the most according to claim 7, it is characterised in that the first of described main casing
Being further opened with axial wire guide on opening, described electric chamber is led mutually by described wire guide with described light-source chamber
Logical；Described explosion-proof lamp structure also includes that seal nipple and wire, described seal nipple are arranged at described wire
Kong Zhong, and described wire guide is covered, described wire wears described wire guide, institute by described seal nipple
State by driving assembly to be electrically connected with described light source by described wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310199014.6A CN104180207B (en) | 2013-05-24 | 2013-05-24 | explosion-proof lamp structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310199014.6A CN104180207B (en) | 2013-05-24 | 2013-05-24 | explosion-proof lamp structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104180207A CN104180207A (en) | 2014-12-03 |
| CN104180207B true CN104180207B (en) | 2016-12-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310199014.6A Expired - Fee Related CN104180207B (en) | 2013-05-24 | 2013-05-24 | explosion-proof lamp structure |
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| Country | Link |
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| CN (1) | CN104180207B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106609948A (en) * | 2015-10-15 | 2017-05-03 | 海洋王照明科技股份有限公司 | An explosion-proof platform lamp |
| CN105508887B (en) * | 2015-12-31 | 2019-02-22 | 浙江通明电器股份有限公司 | Explosion suppression type explosion-preventing lamp lampshade and explosion-proof lamp |
| CN109958918A (en) * | 2017-12-25 | 2019-07-02 | 海洋王照明科技股份有限公司 | Tunnel lamp |
| CN113007682A (en) * | 2021-03-12 | 2021-06-22 | 海洋王（东莞）照明科技有限公司 | Explosion-proof lamp |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0823589A2 (en) * | 1996-08-06 | 1998-02-11 | Appleton Electric Company | Encapsulated explosion-proof pilot light |
| CN2921590Y (en) * | 2006-06-14 | 2007-07-11 | 深圳市海洋王投资发展有限公司 | Antiexplosive platform lamp |
| CN201412716Y (en) * | 2009-06-16 | 2010-02-24 | 华夏防爆电气有限公司 | Explosion isolation and intrinsically safe type LED lighting lamp |
| CN201661872U (en) * | 2009-07-17 | 2010-12-01 | 石家庄高新区立明电子科技有限公司 | Flameproof LED anti-explosion lamp |
-
2013
- 2013-05-24 CN CN201310199014.6A patent/CN104180207B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0823589A2 (en) * | 1996-08-06 | 1998-02-11 | Appleton Electric Company | Encapsulated explosion-proof pilot light |
| CN2921590Y (en) * | 2006-06-14 | 2007-07-11 | 深圳市海洋王投资发展有限公司 | Antiexplosive platform lamp |
| CN201412716Y (en) * | 2009-06-16 | 2010-02-24 | 华夏防爆电气有限公司 | Explosion isolation and intrinsically safe type LED lighting lamp |
| CN201661872U (en) * | 2009-07-17 | 2010-12-01 | 石家庄高新区立明电子科技有限公司 | Flameproof LED anti-explosion lamp |
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| Publication number | Publication date |
|---|---|
| CN104180207A (en) | 2014-12-03 |
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