CN204005881U - LED outdoor lights and heat abstractor thereof - Google Patents
LED outdoor lights and heat abstractor thereof Download PDFInfo
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- CN204005881U CN204005881U CN201420420175.3U CN201420420175U CN204005881U CN 204005881 U CN204005881 U CN 204005881U CN 201420420175 U CN201420420175 U CN 201420420175U CN 204005881 U CN204005881 U CN 204005881U
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- outdoor lights
- terminal part
- heat abstractor
- led
- led outdoor
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/72—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps in street lighting
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- Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
Abstract
The utility model relates to a kind of LED outdoor lights and heat abstractor thereof.A heat abstractor for LED outdoor lights, comprise have cavity body, be fixed on moulding branch and some copper post pieces of some hollows of body; Moulding branch comprises a top portion and some terminal parts, and each terminal part sets out air port, and cavity, top portion, each terminal part are communicated with setting; The first end of each copper post piece is for close contact LED lighting device, the second end close contact body.A kind of LED outdoor lights is also provided, comprises radiator, LED lighting device and the radiator fan of LED outdoor lights.The air that body exterior is ordered about in fan rotation enters in cavity along louvre, forms air-flow, and it is inner that the heat that LED lamp sends enters moulding branch with air-flow via louvre, finally by the air outlet of offering on terminal part, discharged.In addition, the part heat carrying in air-flow distributes from body and moulding branch by heat conducting form, and the mode by convection current and conduction realizes radiating effect better.
Description
Technical field
The utility model relates to light-emitting device field of radiating, particularly relates to a kind of LED outdoor lights and heat abstractor thereof.
Background technology
Along with the development of LED correlation technique, LED outdoor lights has been able to extensive use, and for example Chinese patent 200810216154.9 discloses LED outdoor lights, relates in particular to a kind of LED outdoor lights of lamp tube type.LED outdoor lights comprises lamp body, and lamp body has lamp tube cavity, and LED outdoor lights fluorescent tube is set in lamp tube cavity, it is characterized in that, described LED outdoor lights fluorescent tube is connected with and can makes its adjusting device of rotating along axle center, to regulate LED outdoor lights fluorescent tube rising angle.This utility model provides the LED outdoor lights of the adjustable lamp tube type of a kind of light direction.
And for example, Chinese patent 201010564980.X discloses a kind of LED outdoor lights, comprises lamp body, LED light source, supply unit, control circuit, circuit board; Temperature sensor is installed in lamp body, temperature sensor, control circuit and supply unit are connected in series.Mounting temperature sensor and radiator fan in LED outdoor lights, Based Intelligent Control and reduce the temperature of the interior LED light source of street lamp, contributes to reduce the light decay of LED light source in time.LED outdoor lights shell adopts aluminum material simultaneously, not only alleviated the weight of street lamp, and radiating effect is better, so this design is not only easy for installation, and can effectively control the temperature of street lamp, has extended the service life of LED outdoor lights.
And for example, Chinese patent 201210422044.4 discloses a kind of LED outdoor lights, this utility model comprises solar module, LED lamp holder, control cabinet and lamp stand, solar module, LED lamp holder and control cabinet are arranged on lamp stand, solar module, LED lamp holder, control cabinet connect successively, LED lamp holder comprises LED outdoor lights module, and LED outdoor lights module is connected with driver, and LED outdoor lights module is fixed on a side of aluminium base; This utility model utilizes solar energy to realize the use of controlling street lamp, utilizes photo resistance to realize photo-electric control, and light extraction efficiency is high, and irradiated area is large, irradiates evenly, has reduced the parts of changing, greatly cost-saving.
But, existing LED outdoor lights, its moulding is inflexible, is often only suitable in section use fast; For the environment for use in landscape light in city, section, region, shortcoming meets the variation of environment, is also unfavorable for suiting measures to local conditions, and manufactures the street lamp that is applicable to community, pavement.
Utility model content
Based on this, be necessary to provide a kind of have hollow moulding branch, body interior cavity is communicated with installing zone outside, copper post piece radiator fan direct heat loss through conduction, that have fixed outer, had general applicability, radiating effect preferably LED outdoor lights and heat abstractor thereof by the top portion terminal part of moulding branch.
A heat abstractor for LED outdoor lights, the some moulding branches that comprise a body and be fixed on described body;
Described body interior has cavity, described moulding branch hollow arranges, comprise a top portion and at least one terminal part, described top portion is positioned at the position that described moulding branch is fixed on described body, described terminal part is away from described body setting, described in each, terminal part sets out air port, and described cavity, described top portion, described in each, terminal part is communicated with and arranges;
Described body arranges at least one installation position;
Described installation position arranges an installing zone, some installation portions and some copper post pieces;
Described in each, installation portion is for the LED lighting device of difference fixed outer;
Described in each, the first end of copper post piece is for the described LED lighting device of close contact outside, body described in the second end close contact;
Described installing zone is arranged at described cavity below, for the radiator fan of fixed outer.
In one of them embodiment, described air outlet arranges downwards.
In one of them embodiment, described moulding branch contiguous its each described in terminal part place some through holes are also set.
In one of them embodiment, the outside portion of keeping off the rain that arranges that connects of described air outlet.
In one of them embodiment, described body and described moulding branch are wholely set.
In one of them embodiment, described beginning end is fixedly installed a blowing direction towards the blowing fan of terminal part described in each.
In one of them embodiment, also comprise described radiator fan.
In one of them embodiment, described in each the second end of copper post piece respectively one by one corresponding to moulding branch described in, and the described top portion of moulding branch described in close contact.
In one of them embodiment, described body is articles made of aluminium alloy.
A LED outdoor lights, comprises the heat abstractor of above-mentioned LED outdoor lights, described LED lighting device and described radiator fan.
In above-mentioned LED outdoor lights and heat abstractor thereof, when fan rotates, the air that orders about body exterior enters in cavity along louvre, make air form air-flow, simultaneously, the part heat that LED lamp sends, along with air-flow enters in cavity via louvre, further enters moulding branch via air-vent inner, and the air outlet of finally offering on the terminal part by moulding branch is discharged.In addition, the part heat carrying in air-flow distributes from body and moulding branch by heat conducting form, and the mode by convection current and conduction realizes radiating effect better.Moreover, by the direct heat loss through conduction of copper post piece.
Accompanying drawing explanation
Fig. 1 is the LED outdoor lights of the utility model one preferred embodiment and the cutaway view of heat abstractor thereof.
The specific embodiment
For above-mentioned purpose of the present utility model, feature and advantage can be become apparent more, below in conjunction with accompanying drawing, the specific embodiment of the present utility model is described in detail.A lot of details have been set forth in the following description so that fully understand the utility model.But the utility model can be implemented to be much different from alternate manner described here, and those skilled in the art can do similar improvement without prejudice to the utility model intension in the situation that, so the utility model is not subject to the restriction of following public concrete enforcement.
An example of the present utility model is, a kind of heat abstractor of LED outdoor lights, some moulding branches that it comprises a body and is fixed on described body; Described body interior has cavity, described moulding branch hollow arranges, comprise a top portion and at least one terminal part, described top portion is positioned at the position that described moulding branch is fixed on described body, described terminal part is away from described body setting, described in each, terminal part sets out air port, and described cavity, described top portion, described in each, terminal part is communicated with and arranges; Described body arranges at least one installation position; Described installation position arranges an installing zone, some installation portions and some copper post pieces; Described in each, installation portion is for the LED lighting device of difference fixed outer; Described in each, the first end of copper post piece is for LED lighting device described in close contact, body described in the second end close contact; Described installing zone is arranged at described cavity below, for the radiator fan of fixed outer.And for example, described body and described moulding branch are wholely set, and like this, contribute to enhance productivity.And for example, described body is articles made of aluminium alloy.
For example, a kind of heat abstractor of LED outdoor lights, some moulding branches that it comprises a body and is fixed on described body; For example, described body is that spherical, square, combined triangular shape, rule are octahedra etc., and and for example, for ease of arranging and installing, described body arranges first our department and second our department, and both fix by buckle; For example, described body arranges two hemisphericals, comprises hemispheric first our department and hemispheric second our department, and both fix by buckle, are combined to form a ball.And for example, described heat abstractor also comprises described radiator fan.
And described body interior has cavity, for example, first our department and second our department's buckle are fixed, and wherein enclose a cavity portion, i.e. described cavity.And for example, cavity is communicated with outer setting, and for example, described body arranges the heat radiation through hole of some connection cavitys; And for example, for avoiding rainwater to invade, each through hole that dispels the heat is arranged at the bottom of described body, towards the position of ground direction, be more preferably, each through hole that dispels the heat is truncated cone-shaped, its compared with the upper bottom surface of small size towards described cavity, larger area bottom surface is towards ground, like this, and when rainwater splashes into or flows into heat radiation through hole, because the hypotenuse of heat radiation through hole is downward, make current direction ground, be difficult for entering described body interior, thereby can reach good rainwater-proof effect.
Wherein, described moulding branch hollow arranges, comprise a top portion and at least one terminal part, described top portion is positioned at the position that described moulding branch is fixed on described body, for example, described beginning end is fixedly installed a blowing direction towards the blowing fan of terminal part described in each, like this, can reach good heat loss through convection effect.Described terminal part is away from described body setting, and described in each, terminal part sets out air port, and for example, described air outlet arranges downwards, and and for example, the outside portion of keeping off the rain that arranges that connects of described air outlet, to avoid rainwater to invade; And/or, described moulding branch contiguous its each described in terminal part place some through holes are also set, the radiating effect that this can increase terminal part position in actual applications, has promoted integral heat sink performance.And described cavity, described top portion, described in each, terminal part is communicated with and arranges; For example, described heat abstractor integral body is similar to one tree, pine for example, as its heat radiation branch upward, and for example described heat abstractor is similar to weeping willow to each moulding branch, each moulding branch as its heat radiation branch down, like this, made product meets the variation of environment, is conducive to suit measures to local conditions, produce the street lamp or its heat abstractor that are applicable to community, pavement, there is good Practical significance.And for example, described moulding branch comprises a top portion and a terminal part, described top portion is positioned at the position that described moulding branch is fixed on described body, described terminal part is away from described body setting, described terminal part sets out air port, like this, the hot-air in cavity can distribute from described terminal part by described top portion.And for example, described moulding branch comprises a top portion and a plurality of terminal part, described top portion is positioned at the position that described moulding branch is fixed on described body, described in each, terminal part is away from described body setting, and described in each, terminal part sets out air port, like this, the hot-air in cavity can distribute from terminal part described in each by described top portion, and radiating effect is better.And for example, described in each, terminal part sets out air port, and described in each, air outlet arranges downwards, like this, can reach good rainproof effect, and rainwater is difficult to pour in down a chimney and enter from terminal part.And for example, described in each, terminal part is set to spirality; For example, each spirality terminal part is set to spiral heat dissipation device, and it comprises a support frame; Described support frame is hollow screw structure, forms a heat-dissipating cavity in described support frame; On the sidewall of described support frame, offer several through holes; On the madial wall of described support frame, be provided with reflecting layer; Described support frame inside is provided with several installation positions.Described in each, through hole is evenly opened on the sidewall of described support frame.And for example, on the sidewall of described support frame, offer several to described through hole, and the every pair of described through hole is positioned on the same diameter of a helix of helical structure of described support frame.And for example, on described support frame, along the helix of self helical structure, be wound around radiating wire is set.And for example, the pitch coefficient of the helical structure of described support frame is greater than the pitch coefficient of the helical structure of described radiating wire.And for example, described support frame comprises several radiating parts and is attached to several heat transfer parts on described radiating part, and radiating part and heat transfer part interval setting successively described in several described in several.And for example, the thickness of described radiating part is greater than the thickness of described heat transfer part.And for example, described reflecting layer is arranged on described heat transfer part.And for example, described in each, installation position arranges a LED lamp, like this, can form the lighting that illuminating effect is better, be more suitable for area illumination decoration.And for example, the two ends of support frame have respectively the first opening and the second opening, described the first opening arranges supply fan, described the second opening arranges extraction fan, that is to say, the direction of rotation of the flabellum of described supply fan and described extraction fan, extraneous compared with the hot-air in cold air and then dilution circulation support frame for pumping into fast, further play air thermal convection current radiating effect.Like this, can further strengthen the radiating effect of support frame, the heat producing with the LED lamp that efficiently falls apart rapidly, and then the normal work functions of assurance LED lamp, to increase the service life of LED lamp.And for example, on the sidewall of support frame, offer several through holes.Be appreciated that, on the one hand, through hole can be used as the effect of louvre, thereby the heat that heat-dissipating cavity is gathered can be efficiently rapidly the heat transfer type by thermal convection current be delivered in outside air, like this, can further strengthen the radiating effect of support frame, the heat producing with the LED lamp that efficiently falls apart rapidly, and then the normal work functions of assurance LED lamp, to increase the service life of LED lamp, on the other hand, through hole can also be as the effect of loophole, thereby the light that the LED lamp being arranged in support frame is produced emits by through hole.
And described body arranges at least one installation position; Described installation position arranges an installing zone, some installation portions and some copper post pieces; Described in each, installation portion is for the LED lighting device of difference fixed outer, for mounted lamp; LED lighting device described in the first end close contact of copper post piece described in each, body described in the second end close contact; Described installing zone is arranged at described cavity below, for the radiator fan of fixed outer.For example, the side away from described moulding branch on described body is also fixed with some copper post pieces, and offers some louvres; And for example, in described cavity, be provided with fan, for exhausting, by fan, dry like this, contribute to strengthen convection effects.Like this, adopt copper post to realize the radiating effect of conduction pattern, the rapid dissipation of the heat of body interior can be gone out.And for example, described in each, the second end of copper post piece is respectively one by one corresponding to moulding branch described in, and the described top portion of moulding branch described in close contact, like this, the corresponding moulding branch of each copper post piece, heat loss through conduction one to one, and the radiating effect of conduction is better than convection current, can support large power road lamp illumination.
Adopt heat abstractor described in above-mentioned arbitrary embodiment, an example of the present utility model is, a kind of LED outdoor lights, and it comprises described heat abstractor, described LED lighting device and described radiator fan, like this, can realize the street lamp that is applicable to community, pavement.
As shown in Figure 1, it is the cutaway view of heat abstractor 10 of the LED outdoor lights of the utility model one preferred embodiment.
Wherein, the heat abstractor 10 of LED outdoor lights comprises a body 11 and is fixed on the some moulding branches on body 11, in the present embodiment, take and be fixed with two moulding branches on body 11 and describe as example, described two moulding branches specifically comprise moulding branch 12 and moulding branch 13.
Body 11 inside have cavity 111, and moulding branch 12 is hollow structure, and moulding branch 12 comprises a top portion 121 and a plurality of terminal part, and top portion 121 is positioned at the position that moulding branch 12 is fixed on body 11, and terminal part arranges away from body 11.Described a plurality of terminal part partly comprises terminal part 122, terminal part 123, terminal part 124, terminal part 125.Each terminal part sets out air port.For example, terminal part 122 sets out air port 012.
In the present embodiment, moulding branch is weeping willow shape, and the terminal part of moulding branch is similar to the withy of weeping willow, stretches out under oblique.
Moulding branch is not limited to weeping willow shape, and and for example, moulding branch is pine shape, and the terminal part of moulding branch is similar to the pine branch of pine, stretches out obliquely.And for example, the terminal part of moulding branch in the shape of a spiral, is compared with the terminal part that is long straight shape, and both are in the situation that taking equal length space, and spiral terminal part has larger area of dissipation, better heat-radiation effect than the terminal part that is long straight shape.
Cavity 111, top portion 121, each terminal part are communicated with setting.That is to say, moulding branch 12 inside have the pipeline that is communicated with its top portion 121 and a plurality of terminal parts.In the present embodiment, offer several air-vents on body 11, the top portion of each moulding branch is communicated with cavity 111 by air-vent described in, and so, cavity 111 is communicated with air outlet by air-vent, described pipeline.Shown in Fig. 1, the air-vent 113 of offering on body 11, the top portion 121 of moulding branch 12 is communicated with cavity 111 by air-vent 113.
A side away from moulding branch on body 11 is fixed with some copper post pieces, and offers some louvres, is used for the LED lamp of fixed outer described in each on copper post piece away from the apical margin of body 11.In the present embodiment to be fixed on body 11 the copper post piece 14 away from moulding branch one side, and be opened on body 11 louvre 114 away from moulding branch one side, and be fixed on copper post piece 14 away from the LED lamp 010 of the upper edge of body 11 and describe for example.
In cavity 111, be provided with fan 15, for exhausting, specifically in the present embodiment, the rotating shaft of fan 15 is fixed on the inwall of body 11, and when fan 15 starts work, the airflow direction causing is along copper post piece 14 to moulding branch, that is to say, the air-flow that fan 15 causes enters in cavity 111 along louvre 114, then by air-vent 113, enters moulding branch 12 inside, finally from air outlet 012, discharges.
In the practical application of the heat abstractor 10 of LED outdoor lights, fan 15 starts, its flabellum rotates, close copper post piece 14 1 sides at flabellum form negative pressure, the air that orders about body 11 outsides enters in cavity 111 along louvre 114, make air form air-flow, simultaneously, the part heat that LED lamp 010 sends is along with air-flow enters in cavity 111 via louvre 114, further via air-vent 113, enter moulding branch 12 inside, a plurality of air outlets of finally offering on terminal part 122, terminal part 123, terminal part 124 and the terminal part 125 by moulding branch 12 are discharged.In this process, the part heat carrying in air-flow distributes from body 11 and moulding branch 12 by heat conducting form.
In the present embodiment, the terminal part of moulding branch is towards the oblique setting of body 11, makes air outlet that terminal part offers towards body 11, that is to say, air outlet arranges downwards.Avoid rainwater to enter moulding branch along air outlet inner and flow in cavity 111, cause fan 15 internal circuit short circuits and damage fan 15.
In order better the heat entering in moulding branch 12 internal pipelines promptly to be discharged, contiguous its each terminal part place of moulding branch 12 also arranges some through holes, for the heat of moulding branch 12 internal pipelines is discharged rapidly by described some through holes in addition.
In one embodiment, the outside portion of keeping off the rain that arranges that connects of air outlet, for example, the portion of keeping off the rain is a baffle plate, and the edge of described baffle plate is connected with the top edge of air outlet by hinged mode, like this, the technique effect playing is that, under original state, described baffle plate covers air outlet; During fan 15 work, have air-flow to discharge from air outlet, air-flow forces in described baffle plate from the inside of moulding branch, is backed down, and makes moulding branch internal pipeline by air outlet and outside circulation.When especially the heat abstractor of LED outdoor lights is applied in open air, due to its state in wind and weather for a long time, can effectively avoid rainwater to pour into cavity 111 inside from air outlet, cause fan 15 to damage, greatly shorten the service life of fan 15.And for example, the portion of keeping off the rain is an arc cap, and the edge of described arc cap is fixed on the upper edge of air outlet, can alleviate equally rainwater and pour into cavity 111 inside from air outlet.
In one embodiment, beginning end is fixedly installed a blowing direction towards the blowing fan of each terminal part, can accelerate flowing of air-flow, increases radiating efficiency.
It should be noted that, other embodiment of the present utility model also comprise, LED outdoor lights and heat abstractor thereof that the technical characterictic in the various embodiments described above mutually combines is formed, can implement.
The above embodiment has only expressed several embodiment of the present utility model, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the utility model the scope of the claims.It should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection domain of the present utility model.Therefore, the protection domain of the utility model patent should be as the criterion with claims.
Claims (10)
1. a heat abstractor for LED outdoor lights, is characterized in that, the some moulding branches that comprise a body and be fixed on described body;
Described body interior has cavity, described moulding branch hollow arranges, comprise a top portion and at least one terminal part, described top portion is positioned at the position that described moulding branch is fixed on described body, described terminal part is away from described body setting, described in each, terminal part sets out air port, and described cavity, described top portion, described in each, terminal part is communicated with and arranges;
Described body arranges at least one installation position;
Described installation position arranges an installing zone, some installation portions and some copper post pieces;
Described in each, installation portion is for the LED lighting device of difference fixed outer;
Described in each, the first end of copper post piece is for the described LED lighting device of close contact outside, body described in the second end close contact;
Described installing zone is arranged at described cavity below, for the radiator fan of fixed outer.
2. the heat abstractor of LED outdoor lights according to claim 1, is characterized in that, described air outlet arranges downwards.
3. the heat abstractor of LED outdoor lights according to claim 2, is characterized in that, described moulding branch contiguous its each described in terminal part place some through holes are also set.
4. the heat abstractor of LED outdoor lights according to claim 1, is characterized in that, the outside portion of keeping off the rain that arranges that connects of described air outlet.
5. the heat abstractor of LED outdoor lights according to claim 1, is characterized in that, described body and described moulding branch are wholely set.
6. the heat abstractor of LED outdoor lights according to claim 1, is characterized in that, described beginning end is fixedly installed a blowing direction towards the blowing fan of terminal part described in each.
7. the heat abstractor of LED outdoor lights according to claim 1, is characterized in that, also comprises described radiator fan.
8. the heat abstractor of LED outdoor lights according to claim 1, is characterized in that, described in each the second end of copper post piece respectively one by one corresponding to moulding branch described in, and the described top portion of moulding branch described in close contact.
9. the heat abstractor of LED outdoor lights according to claim 1, is characterized in that, described body is articles made of aluminium alloy.
10. a LED outdoor lights, is characterized in that, comprises the arbitrary described heat abstractor of claim 1 to 9, described LED lighting device and described radiator fan.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420420175.3U CN204005881U (en) | 2014-07-28 | 2014-07-28 | LED outdoor lights and heat abstractor thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420420175.3U CN204005881U (en) | 2014-07-28 | 2014-07-28 | LED outdoor lights and heat abstractor thereof |
Publications (1)
| Publication Number | Publication Date |
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| CN204005881U true CN204005881U (en) | 2014-12-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420420175.3U Expired - Fee Related CN204005881U (en) | 2014-07-28 | 2014-07-28 | LED outdoor lights and heat abstractor thereof |
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| Country | Link |
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| CN (1) | CN204005881U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104075298A (en) * | 2014-07-28 | 2014-10-01 | 东莞市闻誉实业有限公司 | LED street lamp and radiator thereof |
| CN114777089A (en) * | 2022-04-22 | 2022-07-22 | 浙江罗丹照明电器有限公司 | Household multipurpose decorative lamp |
-
2014
- 2014-07-28 CN CN201420420175.3U patent/CN204005881U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104075298A (en) * | 2014-07-28 | 2014-10-01 | 东莞市闻誉实业有限公司 | LED street lamp and radiator thereof |
| CN114777089A (en) * | 2022-04-22 | 2022-07-22 | 浙江罗丹照明电器有限公司 | Household multipurpose decorative lamp |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141210 Termination date: 20160728 |