CN103032825A - Light-emitting diode (LED) illumination unit component and illumination device - Google Patents
Light-emitting diode (LED) illumination unit component and illumination device Download PDFInfo
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- CN103032825A CN103032825A CN2011102932740A CN201110293274A CN103032825A CN 103032825 A CN103032825 A CN 103032825A CN 2011102932740 A CN2011102932740 A CN 2011102932740A CN 201110293274 A CN201110293274 A CN 201110293274A CN 103032825 A CN103032825 A CN 103032825A
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- 238000005286 illumination Methods 0.000 title abstract description 15
- 238000004020 luminiscence type Methods 0.000 claims description 52
- 239000011049 pearl Substances 0.000 claims description 16
- 230000002687 intercalation Effects 0.000 claims description 8
- 238000009830 intercalation Methods 0.000 claims description 8
- 239000011159 matrix material Substances 0.000 claims description 5
- 230000000295 complement effect Effects 0.000 claims description 4
- 239000000428 dust Substances 0.000 claims description 3
- 238000003032 molecular docking Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 239000011324 bead Substances 0.000 abstract 4
- 230000017525 heat dissipation Effects 0.000 abstract 4
- 238000000354 decomposition reaction Methods 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 239000002360 explosive Substances 0.000 description 3
- 230000005855 radiation Effects 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
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- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
The invention belongs to the technical field of production of illumination equipment, and provides a light-emitting diode (LED) illumination unit component and an illumination device. The LED illumination unit component comprises a drive circuit board and a plurality of LED beads arranged on the drive circuit board, a transparent cover and a plurality of reflective cups are arranged in front of the LED beads, the plurality of reflective cups are arranged inside the transparent cover and correspond to the LED beads in position, the back portion of the LED beads is connected with the drive circuit board and is provided with a heat-dissipation piece, the heat-dissipation piece comprises a base plate and a plurality of heat-dissipation fins, the heat-dissipation fins are integrally formed with the base plate, and are arranged in an array with multiple rows and multiple lines, and a round clamping edge and a round sleeve groove are respectively arranged at two sides of the base plate and are provided with mutually embedded sleeve-connection structures. The LED illumination device comprises a plurality of the LED illumination unit components, and the overall light-emitting surface is a convex cylindrical surface. According to the LED illumination unit component and the illumination device, a plurality of LEDs are integrated in a lamp which is high in brightness, energy-saving and durable.
Description
Technical field
The invention belongs to the lighting apparatus production technical field, more particularly, relate to a kind of LED luminescence unit member and comprise the convex LED lighting device of a plurality of these luminescence units.
Background technology
Progress along with the light fixture development technique, the LED lamp occurred in recent years, the LED light fixture has following advantage: (1) is energy-efficient: the power less, economize on electricity 80% with equiluminous than conventional light source, Same Efficieney exceeds 5～7 times than conventional light source, is energy-conservation optimal selection; (2) long service life: LED can reach more than 50,000 hours service life, is 5～10 times of other light source; (3) safe and reliable: power is little, and caloric value is low, can not cause product appearance excess Temperature, sets off an explosion; (4) adopt professional driving power, make LED work more stable, longer service life has improved safety coefficient; (5) environmental protection: made by nontoxic material, pollute unlike the mercurous heavy metal of fluorescent lamp, simultaneously also can recycling; (6) high brightness: make illumination more bright, clear.
Although the LED light fixture has above-mentioned plurality of advantages, but with respect to powerful gas-discharge lamp, because single led power is low, single or a small amount of LED lamp are combined, and it still has the limitation of self at aspects such as brightness and illumination amplitude, how by the LED light fixture is designed, make it can bring into play the advantage such as energy-conservation, long-lived of self, replace again powerful gas-discharge lamp, satisfy client's lighting requirement, then be one and contain the problem that is significant to be solved.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of LED luminescence unit member and lighting device, and the single LED lamp assembled arrangement that is intended to have efficient energy-saving improves the Integral luminous brightness of light fixture or changes its illumination amplitude to together.
For solving the problems of the technologies described above, the technical scheme of employing of the present invention is: a kind of LED luminescence unit member is provided, comprises drive circuit board and be located at a plurality of LED lamp pearls on the described drive circuit board;
The place ahead on described LED lamp pearl also is provided with: a translucent cover, and
A plurality of interior and reflectors corresponding with described LED lamp pearl position of described translucent cover of being located at;
Linking to each other with described drive circuit board at the rear of described LED lamp pearl also is provided with radiating piece, and described radiating piece comprises: a base plate, and
A plurality of and described base plate is one-body molded, be the fin that the multiple lines and multiple rows matrix is arranged;
The both sides of described base plate are respectively equipped with a circular edge clipping and a circular grooving, and described edge clipping and described grooving have the socket join structure of mutual intercalation.
Further, described translucent cover is provided with the holding part that the exterior contour of a plurality of shapes and described reflector is complementary, and described reflector is embedded in the described holding part.
Further, also be provided with a felt pad between the base plate of described drive circuit board and described radiating piece; Also be provided with a rubber blanket between described translucent cover and the described drive circuit board, described rubber blanket is provided with a plurality of through holes that can be used for wearing described reflector.
Further, the base plate of described radiating piece is provided with a groove, described groove and described translucent cover enclose and form a holding part that can hold described felt pad, drive circuit board and rubber blanket and reflector, are provided with wire lead slot for cabling at an end of the groove of the base plate of described radiating piece.
Further, on the wire lead slot of the base plate of described radiating piece, also be provided with the wiring cover plate.
The beneficial effect of LED luminescence unit member provided by the invention is: be provided with a plurality of LED lamp pearls in it, form the LED combination array, its luminosity is high; Moreover, radiating piece on the LED luminescence unit member is provided with the mutually socket join structure of intercalation, itself can interconnect combination between it, so more LED lamp can be grouped together, further improve the luminous intensity of light fixture integral body, and after connecing, the radiating piece of adjacent LED luminescence unit member can mutually carry out the rotation of certain radian, can form the difform exiting surfaces such as spill or convex or concavo-convex combination like this, and produce different light efficiencies, to satisfy the lighting demand of different occasions; In addition, radiating piece is radiating bottom plate and is a plurality of radiating fin combinations that a multiple lines and multiple rows matrix arranges and forms that its area of dissipation is large, and radiating efficiency is high, effectively reduces the temperature of light fixture, guarantees its service life.
The present invention also provides a kind of LED lighting device, it comprises light source part and the power supply that is connected with described light source part, described light source part comprises a plurality of LED luminescence unit members described above, and the whole exiting surface that forms after the translucent cover combination of the edge clipping on the radiating piece base plate of each adjacent described LED luminescence unit member and grooving intercalation socket and each described LED luminescence unit member is a convex cylinder.
Further, each described LED luminescence unit member is fixed by upper bracket and the lower carriage of mutual docking, is integrally formed with the crossbeam that can be connected with described upper bracket with described lower carriage, and described power supply is located on the described crossbeam.
Further, also comprise a upper shell, a lower house and a left shell and a right shell body, described upper shell, lower house and left shell, right shell body link to each other with described upper bracket, lower carriage and crossbeam; Respectively be provided with at least one radiator fan on described left shell and the described right shell body.
Further, described lower house is provided with at least one air inlet, and the inboard of described air inlet also is provided with and prevents that dust from entering the Air Filter in the lamp body.
Further, link to each other with right shell body with described left shell and also be provided with a mounting bracket.
The beneficial effect of LED lighting device provided by the invention is: LED lighting device of the present invention adopts a plurality of LED luminescence unit Component compositions described above to be formed by connecting, form the whole exiting surface of a convex cylinder shape after the translucent cover exiting surface combination of its each LED luminescence unit member, so that the light that LED sends is to the peripheral scattering of cylinder, not only brightness is higher for it, and range of exposures is wide; So LED lighting device of the present invention is fit to be applied to general but the occasion that range of exposures is broad of those brightness requirement to illumination very much, and have the many advantages such as energy-saving and environmental protection that gas-discharge lamp do not have, safety, long service life; Simultaneously LED illuminator structure of the present invention rationally, perfect heat-dissipating and good looking appearance be generous.
Description of drawings
The explosive decomposition structural representation of the LED luminescence unit member that Fig. 1 provides for the embodiment of the invention;
The part explosive decomposition structural representation of the LED luminescence unit member that Fig. 2 provides for the embodiment of the invention;
The wiring cover plate of the LED luminescence unit member that Fig. 3 provides for the embodiment of the invention and the decomposition chart of LED luminescence unit main body;
The perspective view one of the LED luminescence unit member that Fig. 4 provides for the embodiment of the invention;
The perspective view two of the LED luminescence unit member that Fig. 5 provides for the embodiment of the invention;
The explosive decomposition structural representation of the LED lighting device that Fig. 6 provides for the embodiment of the invention;
The assembly structure schematic diagram of the light source part of the LED lighting device that Fig. 7 provides for the embodiment of the invention;
Fig. 8 is the local structure for amplifying schematic diagram at A place among Fig. 7;
Light source part and the support bracket fastened decomposition texture schematic diagram of the LED lighting device that Fig. 9 provides for the embodiment of the invention;
The perspective view one of the LED lighting device that Figure 10 provides for the embodiment of the invention;
The perspective view two of the LED lighting device that Figure 11 provides for the embodiment of the invention;
The perspective view three of the LED lighting device that Figure 12 provides for the embodiment of the invention.
The specific embodiment
In order to make technical problem to be solved by this invention, technical scheme and beneficial effect clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, is not intended to limit the present invention.
Please refer to Fig. 1 to Fig. 5, now LED luminescence unit member provided by the invention is described.Described LED luminescence unit member comprises drive circuit board 1 and is located at a plurality of LED lamp pearls 2 on the described drive circuit board 1; Also be provided with translucent cover 3 in the place ahead of described LED lamp pearl 2 and a plurality ofly be located in the described translucent cover 3 and the reflector 4 corresponding with described LED lamp pearl 2 positions; Linking to each other with described drive circuit board 1 at the rear of described LED lamp pearl 2 also is provided with radiating piece 4, and described radiating piece comprises that base plate 41 and a plurality of and described base plate are 41 one-body molded, is the fin 42 that the multiple lines and multiple rows matrix is arranged; The both sides of described base plate 41 are provided with circular edge clipping 43 and circular grooving 44, and described edge clipping 43 and described grooving 44 have the socket join structure of mutual intercalation; Specifically, the lateral opening of described grooving 44, and opening has certain width, if two LED luminescence unit member type combinations, edge clipping 43 on the base plate 41 of one of them LED luminescence unit member can be received in the grooving 44 on the base plate 41 of another LED luminescence unit member with the intercalation cover, and can carry out relatively rotating of certain amplitude.
LED luminescence unit member provided by the invention is provided with a plurality of LED lamp pearls 2 in it, form the LED combination array, and its luminosity is high; Moreover, the radiating piece 4 of LED luminescence unit member be provided with can mutually nested clamping edge clipping 43 and grooving 44 structures, itself can interconnect combination between it, so more LED lamp can be grouped together, further improve the luminous intensity of light fixture integral body, and can carry out relatively rotating of certain radian after the socket of adjacent LED luminescence unit member, so just can form the difform exiting surfaces such as spill or convex or concavo-convex combination, and produce different light efficiencies, to satisfy the lighting demand of different occasions; In addition, radiating piece 4 combines for a plurality of fin 42 that are the arrangement of multiple lines and multiple rows matrix, not only vertically has airflow clearance, and laterally also has an airflow clearance, like this under the prerequisite that guarantees area of dissipation, make its radiating efficiency higher, can effectively reduce the temperature of light fixture, guarantee its service life.
Further, see also Fig. 2, as a kind of specific embodiment of LED luminescence unit member provided by the invention, described translucent cover 3 is provided with the holding part 30 that the exterior contour of a plurality of shapes and described reflector 4 is complementary, and described reflector 4 is embedded in the described holding part 30.In the present embodiment, reflector 4 is embedded in the translucent cover 3, its Stability Analysis of Structures, and be beneficial to taking full advantage of of space, can make the small product size miniaturization.
Further, see also Fig. 1, a kind of specific embodiment as LED luminescence unit member provided by the invention, a plurality of described LED lamp pearls 2 are " one " word arrangement and are uniformly distributed on the described drive circuit board 1, can one row, also can two row or many rows, can make like this bright dipping of light source component more even.
Further, referring to Fig. 1 and Fig. 2, as a kind of specific embodiment of LED luminescence unit member provided by the invention, also be provided with felt pad 5 between the base plate of described drive circuit board 1 and described radiating piece 4, element on the drive circuit board 1 and radiating piece 4 are separated, prevent short circuit; Also be provided with rubber blanket 6 between described translucent cover 3 and the described drive circuit board 1, described rubber blanket 6 is provided with a plurality of through holes 60 be used to wearing described reflector 4, and this rubber blanket 6 can play the effect of sealing vibrationproof between translucent cover 3 and drive circuit board 1.
Further, see also Fig. 1, Fig. 3, a kind of specific embodiment as LED luminescence unit member provided by the invention, the base plate 41 of described radiating piece 4 is provided with groove 40, described groove 40 encloses the holding part that formation can be held described felt pad 5, drive circuit board 1 and rubber blanket 6 and reflector 4 with described translucent cover 3, is provided with wire lead slot 400 for cabling at an end of the groove 40 of the base plate 41 of described radiating piece 4.Translucent cover 3 is accommodated in each element wherein with the holding part that groove 40 on the radiating piece 4 forms, and fixes with screw etc., and Stability Analysis of Structures is firm, and vibrationproof and sealing are all better; Sealing wire point on the drive circuit board 1 is positive and negative two points, two pads of all LED lamp pearls 2 and this are connected, the wire lead slot 400 that arranges at the one end is used for LED luminescence unit Component composition cabling when using passes from wire lead slot 400 with connecting line successively and is connected with pad.
Further, see also Fig. 1 and Fig. 3, as a kind of specific embodiment of LED luminescence unit member provided by the invention, on the wire lead slot 400 of the base plate 41 of described radiating piece 4, also be provided with wiring cover plate 7.When being used in combination, after connecting line connects each LED luminescence unit member and passes through from wire lead slot 400, can be fixing by this wiring cover plate 7, prevent that circuit is at random.
The present invention also provides a kind of LED lighting device.See also Fig. 6 to Fig. 8, described LED lighting device comprises light source part and the power supply 200 that is connected with described light source part, described light source part comprises a plurality of LED luminescence unit members 100 described above, and the whole exiting surface that forms after translucent cover 3 combinations of the edge clipping 43 on the radiating piece base plate of each adjacent described LED luminescence unit member 100 and grooving 44 intercalations socket and each described LED luminescence unit member 100 is a convex cylinder.
LED lighting device of the present invention adopts a plurality of LED luminescence unit members 100 described above to be connected and forms, the exiting surface common combination of its each LED luminescence unit member 100 forms the whole exiting surface of a convex cylinder shape, so that the light that LED sends is to the peripheral scattering of cylinder, not only brightness is higher for it, and range of exposures is also very wide; So LED lighting device of the present invention is fit to be applied to general but the occasion that range of exposures is broad of those brightness requirement to illumination very much, and have the many advantages such as energy-saving and environmental protection that gas-discharge lamp do not have, safety, long service life; Simultaneously LED illuminator structure of the present invention rationally, perfect heat-dissipating and good looking appearance be generous.
Further, referring to Fig. 6 and Fig. 9, Figure 12, a kind of specific embodiment as LED lighting device provided by the invention, each described LED luminescence unit member 100 is fixing by upper bracket 301 and the lower carriage 302 of mutually docking, be integrally formed with the crossbeam 312 that can be connected with described upper bracket 301 with described lower carriage 302, described power supply 200 is located on the described crossbeam 312.In the present embodiment, upper bracket 301 has respectively the pars intermedia similar to the radian of convex cylinder 3011 with lower carriage 302,3021, the formed arc size in outer end of the fin 42 of its size and each described LED unit illuminated component 100 is complementary, two linking arms 3012 and linking arm 3022 have been wholely set respectively at the two ends of pars intermedia 3011 and pars intermedia 3021, described crossbeam is connected the pars intermedia 3011 of upper bracket 301 with the pars intermedia 3021 of described lower carriage 302, a plurality of LED unit illuminated component 100 after will make up by screw after the two pairs of linking arms and intermediate transverse girder 312 connect is fixing, prevents its each other rotation and so that the exiting surface stochastic shape of light fixture integral body.
Further, see also Fig. 6, Figure 10 and Figure 11, a kind of specific embodiment as LED lighting device provided by the invention, described LED lighting device also comprises upper shell 401, lower house 402 and left shell 501 and right shell body 502, and it links to each other with described upper bracket 301, lower carriage 302 and crossbeam 312; Respectively be provided with at least one radiator fan 600 on described left shell 501 and the described right shell body 502.In the present embodiment, after each LED luminescence unit member 100 encloses by upper shell 401, lower house 402 and left shell 501 and right shell body 502, the heat of lamp interior in time be taken and be dispersed into to the radiation air 600 of being located on described left shell 501 and the described right shell body 502 can out of the external world, avoid the lamp interior excess Temperature and affect service life of element, outside introduces power supply 200 for electric connection line by Ge Lan joint 800, is LED luminescence unit member 100 and radiator fan 600 power supplies; The quantity of radiator fan 600 rationally arranges according to size and the position of light fixture, to guarantee effectively distributing of heat.
Further, see also again Fig. 6, Figure 10 and Figure 11, a kind of specific embodiment as LED lighting device provided by the invention, described lower house 402 is provided with at least one air inlet 4020, air inlet 4020 cooperates radiator fan 600 heat radiations, air-flow enters lamp body inside from here, fin 42 and the heat radiation steam vent on described left shell 501 and described right shell body 502 at the radiating piece 4 of flowing through under the effect of radiator fan 600 are discharged, take away simultaneously the heat on the fin 42, play the effect that improves radiating efficiency; The inboard of described air inlet 4020 also is provided with Air Filter 700, enters in the lamp body to prevent dust.
Further, also see also Fig. 6, Figure 10 and Figure 11, as a kind of specific embodiment of LED lighting device provided by the invention, linking to each other with right shell body 502 with described left shell 501 also is provided with a mounting bracket 900.On the mounting bracket 900 hole for hoist can be set, whole light fixture is lifted into suitable position by this mounting bracket 900.
The above only is preferred embodiment of the present invention, not in order to limiting the present invention, all any modifications of doing within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. LED luminescence unit member comprises drive circuit board and is located at a plurality of LED lamp pearls on the described drive circuit board; It is characterized in that:
The place ahead on described LED lamp pearl also is provided with: a translucent cover, and
A plurality of interior and reflectors corresponding with described LED lamp pearl position of described translucent cover of being located at;
Linking to each other with described drive circuit board at the rear of described LED lamp pearl also is provided with radiating piece, and described radiating piece comprises: a base plate, and
A plurality of and described base plate is one-body molded, be the fin that the multiple lines and multiple rows matrix is arranged;
The both sides of described base plate are respectively equipped with a circular edge clipping and a circular grooving, and described edge clipping and described grooving have the socket join structure of mutual intercalation.
2. LED luminescence unit member according to claim 1 is characterized in that: described translucent cover is provided with the holding part that the exterior contour of a plurality of shapes and described reflector is complementary, and described reflector is embedded in the described holding part.
3. LED luminescence unit member according to claim 1 is characterized in that: also be provided with a felt pad between the base plate of described drive circuit board and described radiating piece; Also be provided with a rubber blanket between described translucent cover and the described drive circuit board, described rubber blanket is provided with a plurality of through holes that can be used for wearing described reflector.
4. LED luminescence unit member according to claim 3, it is characterized in that: the base plate of described radiating piece is provided with a groove, described groove and described translucent cover enclose and form a holding part that can hold described felt pad, drive circuit board and rubber blanket and reflector, are provided with wire lead slot for cabling at an end of the groove of the base plate of described radiating piece.
5. LED luminescence unit member according to claim 4 is characterized in that: also be provided with the wiring cover plate on the wire lead slot of the base plate of described radiating piece.
6. LED lighting device, comprise light source part and the power supply that is connected with described light source part, it is characterized in that: described light source part comprises each described LED luminescence unit member of a plurality of claims 1 to 5, and the whole exiting surface that forms after the translucent cover combination of the edge clipping on the radiating piece base plate of each adjacent described LED luminescence unit member and grooving intercalation socket and each described LED luminescence unit member is a convex cylinder.
7. LED lighting device according to claim 6, it is characterized in that: each described LED luminescence unit member is fixed by upper bracket and the lower carriage of mutual docking, be integrally formed with the crossbeam that can be connected with described upper bracket with described lower carriage, described power supply is located on the described crossbeam.
8. LED lighting device according to claim 7, it is characterized in that: also comprise a upper shell, a lower house and a left shell and a right shell body, described upper shell, lower house and left shell, right shell body link to each other with described upper bracket, lower carriage and crossbeam; Respectively be provided with at least one radiator fan on described left shell and the described right shell body.
9. LED lighting device according to claim 8, it is characterized in that: described lower house is provided with at least one air inlet, and the inboard of described air inlet also is provided with and prevents that dust from entering the Air Filter in the lamp body.
10. according to claim 8 or 9 described LED lighting devices, it is characterized in that: linking to each other with right shell body with described left shell also is provided with a mounting bracket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102932740A CN103032825A (en) | 2011-09-29 | 2011-09-29 | Light-emitting diode (LED) illumination unit component and illumination device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102932740A CN103032825A (en) | 2011-09-29 | 2011-09-29 | Light-emitting diode (LED) illumination unit component and illumination device |
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| CN103032825A true CN103032825A (en) | 2013-04-10 |
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| CN2011102932740A Pending CN103032825A (en) | 2011-09-29 | 2011-09-29 | Light-emitting diode (LED) illumination unit component and illumination device |
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| CN101235946A (en) * | 2007-02-01 | 2008-08-06 | 亿光电子工业股份有限公司 | Uniform Lighting Module |
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| CN101532624A (en) * | 2009-04-15 | 2009-09-16 | 史杰 | LED module street lamp cap with adjustable irradiation angle and high thermal diffusivity |
| CN102116448A (en) * | 2009-12-31 | 2011-07-06 | 上海广茂达光艺科技股份有限公司 | Modularized street lamp |
| CN102141223A (en) * | 2011-04-26 | 2011-08-03 | 雍徽 | High-power LED (Light Emitting Diode) light source assembled street lamp and tunnel lamp |
-
2011
- 2011-09-29 CN CN2011102932740A patent/CN103032825A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101235946A (en) * | 2007-02-01 | 2008-08-06 | 亿光电子工业股份有限公司 | Uniform Lighting Module |
| CN101520145A (en) * | 2009-03-05 | 2009-09-02 | 南京汉德森科技股份有限公司 | Modularization LED street lamp with adjustable angle |
| CN101532624A (en) * | 2009-04-15 | 2009-09-16 | 史杰 | LED module street lamp cap with adjustable irradiation angle and high thermal diffusivity |
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Application publication date: 20130410 |