CN101586750A - Flameproof intrinsically safe LED illuminating lamp - Google Patents
Flameproof intrinsically safe LED illuminating lamp Download PDFInfo
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- CN101586750A CN101586750A CNA200910099901XA CN200910099901A CN101586750A CN 101586750 A CN101586750 A CN 101586750A CN A200910099901X A CNA200910099901X A CN A200910099901XA CN 200910099901 A CN200910099901 A CN 200910099901A CN 101586750 A CN101586750 A CN 101586750A
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Abstract
The present invention relates to a kind of Flameproof intrinsically safe LED illuminating lamp, comprise light source and lamp socket, light source is arranged on the lamp socket, light source adopts the LED light-emitting component, the lamp socket shape is circular platform type, the lamp socket longitudinal section is trapezoidal, the bottom surface of lamp socket forms the cavity of indent, upper bottom surface at lamp socket is polygon, it is radially distributed with 4 LED lamp installation position I the upper bottom surface upper edge, and it is radially distributed with 4 or 8 or 12 or 20 or N LED lamp installation position II the upper edge, side of lamp socket, and corresponding each LED lamp installation position is provided with a LED light-emitting component, be electrically connected the formation serial or parallel connection by lead between each LED light-emitting component, light source assembly comprises reflection shield.The present invention adopts novel light source assembly and power supply module, makes the LED illuminating lamp meet the essential safety standard of national regulation explosion-proof lamp fully, uses very safe, reliable.Flameproof intrinsically safe LED illuminating lamp of the present invention can use in places such as mine or petrochemical industries.
Description
Technical field
The present invention relates to a kind of explosion-proof lamp, relate in particular to a kind of Flameproof intrinsically safe LED illuminating lamp.
Background technology
The explosion-proof lamp that the colliery is used or the petrochemical industry place is used adopts incandescent lamp or fluorescent lamp as lighting source more, the rated voltage of incandescent lamp is 36V, rated power is 36W～500W, can produce a large amount of heat energy at lighting process, the explosion-proof means of this class explosion-proof lamp all are to adopt the inlet wire at explosion-proof lamp that explosion suppresion surface partly is set, prevent that electric spark from contacting with inflammable, explosive gas in the place, avoids blasting.And a translucent cover just is set simply at the front end of incandescent lamp and the periphery of fluorescent lamp; in actual conditions, through regular meeting translucent cover taking place breaks, thus the heat or the explosion caused accident of spark that produce because of incandescent lamp or fluorescent lamp; bring uncertain factor to production, have potential safety hazard.
Summary of the invention
The objective of the invention is to overcome the defective of prior art, provide a kind of safer, more stable better as lighting source and more compact structure, illuminating effect and energy-saving effect, the Flameproof intrinsically safe LED illuminating lamp that is used for of practical guarantee can be provided for safety in production with the LED lamp.
For achieving the above object, the present invention adopts a kind of Flameproof intrinsically safe LED illuminating lamp, comprise flameproof enclosure, power supply module, light source assembly, wherein flameproof enclosure comprises housing, lid, junction block, lamp socket, cable entry, light source assembly comprises light source and lamp socket, light source is arranged on the lamp socket, light source adopts the LED light-emitting component, the lamp socket shape is circular platform type, the lamp socket longitudinal section is trapezoidal, the bottom surface of lamp socket forms the cavity of indent, upper bottom surface at lamp socket is polygon, it is radially distributed with 4 LED lamp installation position I the upper bottom surface upper edge, it is radially distributed with 4 or 8 or 12 or 20 or N LED lamp installation position II the upper edge, side of lamp socket, corresponding each LED lamp installation position is provided with a LED light-emitting component, be electrically connected the formation serial or parallel connection by lead between each LED light-emitting component, light source assembly comprises reflection shield, reflection shield is arranged on the upper bottom surface front end of lamp socket and removably connects with the lamp socket formation, the reflection shield shape is and the lamp socket shape, the circular platform type that size is suitable, the reflection shield longitudinal section is trapezoidal, promptly with on the corresponding bottom surface of the upper bottom surface of lamp socket forming the die cavity of indent on the reflection shield, the upper bottom surface of reflection shield is polygon, it is radially distributed with 4 reflective surface I in the upper bottom surface upper edge, it is radially distributed with 4 or 8 or 12 or 20 or N reflective surface II in the upper edge, side of reflection shield, reflective surface II is polygon, the central authorities of each reflective surface I on the upper bottom surface of reflection shield and each the reflective surface II on the side all form with lamp socket on the suitable lamp hole of LED light-emitting component, this lamp is exposed on the top of the LED lamp in the LED light-emitting component.
For fixed L ED light-emitting component better, the present invention further is set to the LED light-emitting component and is made up of LED lamp and wiring board, the setting of LED lamp in the circuit board and constitute and to be electrically connected, all form on LED lamp installation position I on the lamp socket and the II and the suitable polygon groove of wiring board, wiring board is fixed on and constitutes the location cooperation in this polygon groove.
In order to increase the reflecting effect of LED light-emitting component to greatest extent, the present invention further is set to extend to form the shirt rim downwards at the bottom surface of reflection shield, and the outer ring, shirt rim forms the taper anchor ring.
In order to solve the wire arrangements problem, the present invention further is set to form and the suitable metallic channel of lead on the inwall of the die cavity of reflection shield.
For the voltage that meets the essential safety standard being provided for the LED lamp, the present invention further is set to power supply module and comprises, following junction block, the Switching Power Supply plate that is used for step-down, pillar, on, following junction block be arranged in parallel, connect by pillar between the two, last junction block is provided with 1 and advances binding post, following junction block is provided with 2 and goes out binding post, 1 or polylith Switching Power Supply plate place, between the following junction block and an end be fixed on the pillar, the electrical input of every block of Switching Power Supply plate by lead with advance binding post and be connected, the electric output of every block of Switching Power Supply plate by lead with go out binding post and be connected, be arranged in parallel between every block of Switching Power Supply plate, between every block of Switching Power Supply plate, be provided with insulating barrier, insulating barrier one end is fixed on the pillar, constitutes relation in parallel between Switching Power Supply plate and the Switching Power Supply plate.
In order to make whole light source modular construction compactness, the present invention further is set to along the center line of lamp socket the LED light-emitting component is divided into 2 groups, each LED light-emitting component in every group is connected mutually, constitute in parallel between 2 groups, the well-regulated layout of lead wherein, on the upper bottom surface of lamp socket, form the lead fairlead, wire arrangements on the corresponding lamp socket of metallic channel on the side of reflection shield is interconnected to constitute regular polygonal shape by lamp hole, and the metallic channel on the upper bottom surface of reflection shield is along the parallel symmetric arrangement of center line.
For the assembly and disassembly convenience, the present invention further is set to offer screw hole at the circle centre position of the upper bottom surface of lamp socket, circle centre position at the upper bottom surface of reflection shield is offered through hole, passes through hole and is fixed on by securing member and realize removably connecting of lamp socket and reflection shield in the screw hole.
For insulation better, the present invention further is set to be provided with the packing ring that is used to insulate between corresponding insulating barrier on the pillar and Switching Power Supply plate.
The present invention compares with prior art, replace original incandescent lamp or fluorescent lamp as lighting source with the LED lamp, and setting and the suitable lamp socket of LED light-emitting component, and at lamp socket rational deployment LED light-emitting component, in order to increase the reflecting effect of LED light-emitting component, improve illuminance, also be provided with a reflection shield, and, make that the whole light source modular construction is compacter, more energy-conservation, illuminating effect is better by above-mentioned multiple topology layout.Switching Power Supply plate among the present invention is a prior art, and the circuit by the Switching Power Supply intralamellar part is provided with the realization step-down.When external 127V voltage by advancing binding post and introduce in this Switching Power Supply plate on the last junction block with lead, through its inner voltage stabilization and current stabilization, voltage after the output only is 20V, draw by the binding post that goes out on the following junction block at last, supply with the LED lamp and use,, meet the essential safety standard of national regulation explosion-proof lamp fully because voltage only is 20V, electric current≤750mA, use very safe, reliable.Flameproof intrinsically safe LED illuminating lamp of the present invention can use in places such as mine or petrochemical industries.
Description of drawings
Fig. 1 is an embodiment of the invention light source assembly stereogram.
Fig. 2 is an embodiment of the invention light source assembly front view.
Fig. 3 is an embodiment of the invention light source assembly rearview.
Fig. 4 is an embodiment of the invention light source assembly left view.
Fig. 5 is an embodiment of the invention lampshade front view.
Fig. 6 is the A-A cutaway view of Fig. 5.
Fig. 7 is embodiment of the invention LED lamp and lampshade integrated structure schematic diagram.
Fig. 8 is an embodiment of the invention reflection shield front view.
Fig. 9 is the B-B cutaway view of Fig. 8.
Figure 10 is the C-C cutaway view of Fig. 8.
Figure 11 is an embodiment of the invention reflection shield rearview.
Figure 12 is the utility model embodiment power supply module structural representation.
Figure 13 is an embodiment of the invention LED structure of the lighting lamp schematic diagram.
The specific embodiment
As shown in figure 13, specific embodiments of the invention are a kind of Flameproof intrinsically safe LED illuminating lamps, comprise flameproof enclosure, power supply module, light source assembly, and wherein flameproof enclosure comprises housing, lid, junction block, lamp socket, cable entry.Shown in Fig. 1,2,3,4, light source assembly comprises light source, lamp socket 2 and reflection shield 3, and light source is arranged on the lamp socket 2, and light source adopts LED light-emitting component 1, LED light-emitting component 1 is by LED lamp 11 and be hexagonal wiring board 12 and form, and LED lamp 11 is arranged on the wiring board 12 and formation is electrically connected.As Fig. 5,6, shown in 7, lamp socket 2 shapes are circular platform type, lamp socket 2 longitudinal sections are trapezoidal, the bottom surface of lamp socket 2 forms the cavity 21 of indent, cavity 21 shapes are circular platform type, the upper bottom surface 22 of lamp socket 2 is octagon, it radially is evenly distributed with 4 LED lamp installation position I (23) upper bottom surface 22 upper edges, form the hexagonal indentations 231 suitable in the central authorities of this LED lamp installation position I (23) with wiring board 12, it radially is evenly distributed with 8 LED lamp installation position II (25) 24 upper edges, side of lamp socket 2, each LED lamp installation position II (25) is a quadrangle, form the hexagonal indentations 231 suitable in the central authorities of each LED lamp installation position II (25) with wiring board 12, every wiring board 12 corresponding hexagonal indentations 231 also are bonded at by heat conductive silica gel and constitute the location in the hexagonal indentations 231 and cooperate, be electrically connected by lead 4 between each LED light-emitting component 1, center line along lamp socket 2 is divided into a left side with LED light-emitting component 1, right each 2 groups, each LED light-emitting component 1 in every group is connected mutually, a left side, constitute in parallel between right each 2 groups, lead 4 well-regulated layouts wherein form lead fairlead 26 on the upper bottom surface of lamp socket 2.As Fig. 8,9,10, shown in 11, reflection shield 3 is arranged on upper bottom surface 21 front ends of lamp socket 2, reflection shield 3 shapes are and lamp socket 2 shapes, the circular platform type that size is suitable, reflection shield 3 longitudinal sections are trapezoidal, promptly with on the upper bottom surface 21 corresponding bottom surfaces of lamp socket 2 forming the die cavity 31 of indent on the reflection shield 3, die cavity 31 shapes are circular platform type, the upper bottom surface 32 of reflection shield 3 is octagon, it radially is evenly distributed with 4 reflective surface I (34) in upper bottom surface 32 upper edges, it radially is evenly distributed with 8 reflective surface II (35) in 36 upper edges, side of reflection shield 3, reflective surface II (35) is quadrangle, the central authorities of each reflective surface I (34) on the upper bottom surface 32 of reflection shield 3 and each the reflective surface II (35) on the side 36 all form with lamp socket 2 on the suitable lamp hole 37 of LED light-emitting component 1, lamp hole 37 numbers are 12, this lamp hole 37 is exposed on the top of the LED lamp 11 in the LED light-emitting component 1, on the inwall of the die cavity 31 of reflection shield 3, form and lead 4 sizes, the metallic channel 38 that length is suitable to outer lug, the trench bottom of metallic channel 38 exceeds the outer surface of reflection shield 3, lead 4 on the metallic channel 38 corresponding lamp sockets 2 on the side 36 of reflection shield 3 is arranged the polygonal shape that is interconnected to constitute rule by lamp hole 37, and the metallic channel 38 on the upper bottom surface 32 of reflection shield 3 is along the parallel symmetric arrangement of center line.Bottom surface at reflection shield 3 extends to form shirt rim 33 downwards, and 33 outer rings, shirt rim form taper anchor ring 331.Circle centre position at the upper bottom surface 22 of lamp socket 2 is offered screw hole 27, offers through hole 39 at the circle centre position of the upper bottom surface 32 of reflection shield 3, passes through hole 39 and is fixed on by screw and realize removably connecting of lamp sockets 2 and reflection shield 3 in the screw hole 27.
The purpose that reflection shield 3 is set in the foregoing description is exactly to utilize the ad hoc structure of reflective surface I (34) on the reflection shield 3 and reflective surface II (35) to reflect the light of LED lamp 11, strengthen illuminance, if there is not the ad hoc structure of reflective surface I (34) and reflective surface II (35), reflecting effect will be far short of what is expected, may not reach the illuminance of incandescent lamp, that just needs to arrange a large amount of LED lamps 11, can increase the cost and the electricity consumption amount of anti-explosion LED lamps on the contrary, has lost the meaning of using LED lamp 11.
Utilizing wiring board 12 on hexagonal indentations 231 and the LED light-emitting component 1 on the LED lamp installation position to constitute that the location cooperates in the foregoing description, and fixed with thermal conductive silicon is gluing, is the embodiment of the best.The shape of polygon groove also may not be just hexagonal, also can be other shapes, adopt hexagon capable just for best adaptive of wiring board 12.To be fixed on LED light-emitting component 12 on the LED lamp installation position, also may not adopt this structure of polygon groove, also can directly be fixed, perhaps go back other different technical schemes with thermal conductive silicon is gluing.
Bottom surface at reflection shield 3 in the foregoing description extends to form shirt rim 33 downwards, 33 outer rings, shirt rim form taper anchor ring 331, purpose is in order to increase the reflecting effect of LED light-emitting component 1 to greatest extent, it is best embodiment, if do not set up taper anchor ring 331 also is feasible, and just reflecting effect is not good enough.
As shown in figure 12, power supply module comprises upper and lower junction block (4,6), 2 Switching Power Supply plate 7, pillars 9 that are used for step-down, upper and lower junction block (4,6) be arranged in parallel, connects by 2 pillars 9 between the two, and upper and lower junction block (4,6) is fixed by bolts to respectively on the pillar 9.Last junction block 4 is provided with 1 and advances binding post 41, following junction block 6 is provided with 2 and goes out binding post 61,2 blocks of Switching Power Supply plates 7 place, following junction block (4,6) between and be fixed on the pillar 9, the lead that is used to be electrically connected passes pillar 9, the electrical input of every block of Switching Power Supply plate 7 by lead with advance binding post 41 and be connected, the electric output of every block of Switching Power Supply plate 7 by lead with go out binding post 61 and be connected, be arranged in parallel between every block of Switching Power Supply plate 7, between every block of Switching Power Supply plate 7, be arranged with insulating barrier 8 in parallel, insulating barrier 8 is fixed on the pillar 9, constitutes relation in parallel between 2 blocks of Switching Power Supply plates 7.Between corresponding insulating barrier 8 and Switching Power Supply plate 7 on the pillar 9 in left side, be arranged with 2 packing rings 10 that are used to insulate.
Only be provided with 2 blocks of Switching Power Supply plates 7 in the foregoing description, 12 the LED lamps 11 in the cooperated with LED illuminating lamp use, and 2 blocks of Switching Power Supply plates 7 are relation in parallel.And the present invention can decide the quantity of Switching Power Supply plate 7 according to LED lamp 11 quantity in the LED illuminating lamp, 1 also can, even more also passable, as long as correspondingly between each piece Switching Power Supply plate 7, insulating barrier 8 is set and packing ring 10 insulate.
Except that insulating barrier 8 is set, packing ring 10 is set on pillar also in the foregoing description, such insulation effect is better.
As shown in figure 13, the embodiment of the invention is installed in the LED illuminating lamp, be provided with translucent cover 5 in the lower end of light source assembly, because the present invention adopts LED lamp 11, caloric value is very low, even break accidents take place for translucent cover 5, LED lamp 11 power supply energies can explosion caused accident yet, and the production safety coefficient improves greatly.
Claims (10)
1, a kind of Flameproof intrinsically safe LED illuminating lamp, comprise flameproof enclosure, power supply module, light source assembly, wherein flameproof enclosure comprises housing, lid, junction block, lamp socket, cable entry, light source assembly comprises light source and lamp socket, light source is arranged on the lamp socket, it is characterized in that: light source adopts the LED light-emitting component, the lamp socket shape is circular platform type, the lamp socket longitudinal section is trapezoidal, the bottom surface of lamp socket forms the cavity of indent, upper bottom surface at lamp socket is polygon, it is radially distributed with 4 LED lamp installation position I the upper bottom surface upper edge, it is radially distributed with 4 or 8 or 12 or 20 or N LED lamp installation position II the upper edge, side of lamp socket, corresponding each LED lamp installation position is provided with a LED light-emitting component, be electrically connected the formation serial or parallel connection by lead between each LED light-emitting component, light source assembly comprises reflection shield, reflection shield is arranged on the upper bottom surface front end of lamp socket and removably connects with the lamp socket formation, the reflection shield shape is and the lamp socket shape, the circular platform type that size is suitable, the reflection shield longitudinal section is trapezoidal, promptly with on the corresponding bottom surface of the upper bottom surface of lamp socket forming the die cavity of indent on the reflection shield, the upper bottom surface of reflection shield is polygon, it is radially distributed with 4 reflective surface I in the upper bottom surface upper edge, it is radially distributed with 4 or 8 or 12 or 20 or N reflective surface II in the upper edge, side of reflection shield, reflective surface II is polygon, the central authorities of each reflective surface I on the upper bottom surface of reflection shield and each the reflective surface II on the side all form with lamp socket on the suitable lamp hole of LED light-emitting component, this lamp is exposed on the top of the LED lamp in the LED light-emitting component.
2, Flameproof intrinsically safe LED illuminating lamp according to claim 1, it is characterized in that: described LED light-emitting component is made up of LED lamp and wiring board, the setting of LED lamp in the circuit board and constitute and to be electrically connected, all form on LED lamp installation position I on the lamp socket and the II and the suitable polygon groove of wiring board, wiring board is fixed on and constitutes the location cooperation in this polygon groove.
3, Flameproof intrinsically safe LED illuminating lamp according to claim 1 and 2, it is characterized in that: described power supply module comprises, following junction block, the Switching Power Supply plate that is used for step-down, pillar, on, following junction block be arranged in parallel, connect by pillar between the two, last junction block is provided with 1 and advances binding post, following junction block is provided with 2 and goes out binding post, 1 or polylith Switching Power Supply plate place, between the following junction block and an end be fixed on the pillar, the electrical input of every block of Switching Power Supply plate by lead with advance binding post and be connected, the electric output of every block of Switching Power Supply plate by lead with go out binding post and be connected, be arranged in parallel between every block of Switching Power Supply plate, between every block of Switching Power Supply plate, be provided with insulating barrier, insulating barrier one end is fixed on the pillar, constitutes relation in parallel between Switching Power Supply plate and the Switching Power Supply plate.
4, Flameproof intrinsically safe LED illuminating lamp according to claim 1 and 2 is characterized in that: described bottom surface at reflection shield extends to form the shirt rim downwards, and the outer ring, shirt rim forms the taper anchor ring.
5, Flameproof intrinsically safe LED illuminating lamp according to claim 1 and 2 is characterized in that: form and the suitable metallic channel of lead on the inwall of described die cavity at reflection shield.
6, Flameproof intrinsically safe LED illuminating lamp according to claim 3 is characterized in that: form and the suitable metallic channel of lead on the inwall of described die cavity at reflection shield.
7, Flameproof intrinsically safe LED illuminating lamp according to claim 1 and 2, it is characterized in that: described center line along lamp socket is divided into 2 groups with the LED light-emitting component, each LED light-emitting component in every group is connected mutually, constitute in parallel between 2 groups, the well-regulated layout of lead wherein, on the upper bottom surface of lamp socket, form the lead fairlead, wire arrangements on the corresponding lamp socket of metallic channel on the side of reflection shield is interconnected to constitute regular polygonal shape by lamp hole, and the metallic channel on the upper bottom surface of reflection shield is along the parallel symmetric arrangement of center line.
8, Flameproof intrinsically safe LED illuminating lamp according to claim 3, it is characterized in that: described center line along lamp socket is divided into 2 groups with the LED light-emitting component, each LED light-emitting component in every group is connected mutually, constitute in parallel between 2 groups, the well-regulated layout of lead wherein, on the upper bottom surface of lamp socket, form the lead fairlead, wire arrangements on the corresponding lamp socket of metallic channel on the side of reflection shield is interconnected to constitute regular polygonal shape by lamp hole, and the metallic channel on the upper bottom surface of reflection shield is along the parallel symmetric arrangement of center line.
9, Flameproof intrinsically safe LED illuminating lamp according to claim 1 and 2, it is characterized in that: the circle centre position of described upper bottom surface at lamp socket is offered screw hole, circle centre position at the upper bottom surface of reflection shield is offered through hole, passes through hole and is fixed on by securing member and realize removably connecting of lamp socket and reflection shield in the screw hole.
10, Flameproof intrinsically safe LED illuminating lamp according to claim 3 is characterized in that: describedly be provided with the packing ring that is used to insulate between corresponding insulating barrier on the pillar and Switching Power Supply plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200910099901XA CN101586750A (en) | 2009-06-16 | 2009-06-16 | Flameproof intrinsically safe LED illuminating lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200910099901XA CN101586750A (en) | 2009-06-16 | 2009-06-16 | Flameproof intrinsically safe LED illuminating lamp |
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| CN101586750A true CN101586750A (en) | 2009-11-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA200910099901XA Pending CN101586750A (en) | 2009-06-16 | 2009-06-16 | Flameproof intrinsically safe LED illuminating lamp |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102121609A (en) * | 2011-01-25 | 2011-07-13 | 大连马可尼电子仪器有限公司 | Efficient energy-efficient environmental-friendly intrinsically safe and flameproof illuminating lamp |
| CN101761902B (en) * | 2010-01-29 | 2012-05-30 | 海洋王照明科技股份有限公司 | Explosion protection lead wire connector and explosion protection lamp |
| CN102818135A (en) * | 2011-06-10 | 2012-12-12 | 海洋王照明科技股份有限公司 | Illumination lamp |
| CN103256527A (en) * | 2013-01-30 | 2013-08-21 | 深圳市通用科技有限公司 | All-round light-distribution LED lamp |
| CN104421901A (en) * | 2013-09-06 | 2015-03-18 | 深圳市海洋王照明工程有限公司 | All-round anti-explosion lamp assembly |
| CN104633620A (en) * | 2013-11-12 | 2015-05-20 | 海洋王（东莞）照明科技有限公司 | Explosion-proof lamp and light source assembly thereof |
-
2009
- 2009-06-16 CN CNA200910099901XA patent/CN101586750A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101761902B (en) * | 2010-01-29 | 2012-05-30 | 海洋王照明科技股份有限公司 | Explosion protection lead wire connector and explosion protection lamp |
| CN102121609A (en) * | 2011-01-25 | 2011-07-13 | 大连马可尼电子仪器有限公司 | Efficient energy-efficient environmental-friendly intrinsically safe and flameproof illuminating lamp |
| CN102818135A (en) * | 2011-06-10 | 2012-12-12 | 海洋王照明科技股份有限公司 | Illumination lamp |
| CN102818135B (en) * | 2011-06-10 | 2014-08-06 | 海洋王照明科技股份有限公司 | Illumination lamp |
| CN103256527A (en) * | 2013-01-30 | 2013-08-21 | 深圳市通用科技有限公司 | All-round light-distribution LED lamp |
| CN104421901A (en) * | 2013-09-06 | 2015-03-18 | 深圳市海洋王照明工程有限公司 | All-round anti-explosion lamp assembly |
| CN104633620A (en) * | 2013-11-12 | 2015-05-20 | 海洋王（东莞）照明科技有限公司 | Explosion-proof lamp and light source assembly thereof |
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Open date: 20091125 |