CN103216755A - Small low-noise active-radiating type large-power LED (Light-Emitting Diode) electric light source - Google Patents

Small low-noise active-radiating type large-power LED (Light-Emitting Diode) electric light source Download PDF

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Publication number
CN103216755A
CN103216755A CN2013101206007A CN201310120600A CN103216755A CN 103216755 A CN103216755 A CN 103216755A CN 2013101206007 A CN2013101206007 A CN 2013101206007A CN 201310120600 A CN201310120600 A CN 201310120600A CN 103216755 A CN103216755 A CN 103216755A
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radiator
light source
electric light
power
power supply
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CN103216755B (en
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周洁
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WUXI ANTANG TECHNOLOGY ELECTRONICS Co Ltd
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WUXI ANTANG TECHNOLOGY ELECTRONICS Co Ltd
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Abstract

The invention discloses a large-power LED (Light-Emitting Diode) electric light source and in particular relates to a small low-noise active-radiating type large-power LED electric light source which comprises a lamp holder, a radiating body and a lens, wherein the lamp holder is fixedly arranged on the radiating body by four screws; the lens is arranged on the bottom of the radiating body; an air inlet I is formed in the lamp holder; a power supply cavity is formed on the bottom of the lamp holder; a constant-current drive power supply is arranged in the power supply cavity; a circular mute large-air-quantity fan is embedded on the top of the radiating body; a high heat conduction aluminum base board is arranged at the bottom end of the radiating body; and a large-power engine is arranged on the high heat conduction aluminum base board. Detecting protective devices are arranged on the radiating body and the high heat conduction aluminum base board; and the detecting protective devices are thermistors. Compared with the prior art, the small low-noise active-radiating type large-power LED electric light source has the beneficial effects of being high in cost performance, long in service life, extensive in adaptability, high in reliability and low in maintenance cost. Besides, the small low-noise active-radiating type large-power LED electric light source is simple in structure, easy to dismount and capable of greatly reducing the installation and maintenance cost.

Description

The great power LED electric light source of small-sized low noise active heat removal
Technical field
The present invention relates to the high power led electro light sources technical field, particularly relate to a kind of great power LED electric light source of small-sized low noise active heat removal.
Background technology
Traditional electrical light source incandescent lamp utilizes heat radiation luminous, because of only the sub-fraction of filament institute consuming electric power being converted into visible light, so luminous efficiency is low.Government Of Australia takes the lead in announcing that eliminate incandescent lamp with the legislation form begins comprehensively at the beginning of 2007, successively has tens countries and regions to issue incandescent lamp successively and eliminates plan.And the three primary colours compact fluorescent lamp, be commonly called as electricity-saving lamp, can reach same luminous energy output, its drawback is also arranged though only need expend 1/5 to 1/4 of ordinary incandescent lamp power consumption, start slow as electricity-saving lamp, spectrum is discontinuous, and simultaneously, electricity-saving lamp need add fluorescent RE powder, because fluorescent RE powder itself has radioactivity, electricity-saving lamp can produce ionising radiation (being the radioactive ray nuclear radiation), compares the uncertainty of electromagnetic radiation to the human body infringement, and harm more merits attention to human body in excessive radioactive ray nuclear radiation.
Solid-state illumination is a kind of brand-new lighting engineering, utilize semiconductor chip as luminescent material, directly convert electrical energy into luminous energy, it is luminous with the tungsten filament of incandescent lamp luminous different with tricolor powder electricity-saving lamp, semiconductor light-emitting-diode (LED) adopts electroluminescence, and photoelectric transformation efficiency is higher.Solid-state illumination has characteristics such as energy-saving and environmental protection, life-span are long, non-maintaining, easy to control.
The present main force of solid-state illumination technology uses and remains energy-conservation replacement, as factories and miness storage illumination, commercial lighting, road lighting and view brightening etc.In these were used, having many was scenes of demand high-power illumination, and the great power LED luminous component because of its caloric value is big, often adopts the very large aluminium section bar heat radiation of volume.This passive radiating mode is the most commonly used at present.
But above-mentioned passive heat radiation mode has been brought the problem of following several respects:
1, big, the Heavy Weight of lamp body;
Also produce a large amount of heats in the time of the LED electrified light emitting, bring the going down of rising, brightness and life-span of temperature thus.Application Engineers often design the radiator of selecting for use external form bigger, improve the lost speed of heat by the mode that increases area of dissipation.This just brings the general more traditional lamp body situation bigger than normal of LED lamp body.The weight of lamp body self also increased greatly when external form was amplified, this point more than 30W large-power lamp and electric light source in show particularly evidently.
With comparatively common 60W bulkhead lamp capable is example, and the luminous component of 60W bulkhead lamp capable generally adopts the high-power integration module (COB) of 50W.This module area is less, and caloric value is very big, adopts diameter 160mm usually, and the cylindrical aluminium section bar of height 100-110mm is its heat radiation, and the radiator deadweight is general above 2 kilograms.Add external power supply and power pack, about 3 kilograms of whole lamp weight.And the 200-250W electricity-saving lamp of equal brightness typically have a diameter from 120mm, length is 370mm, 1 kilogram of shortage in weight.The design that this shows existing LED high power light source really need improve.
2, profile or interface do not match;
As previously mentioned, present LED bulkhead lamp capable radiator is huge, and weight is heavier, and furthermore driving power is external, these factors cause the LED bulkhead lamp capable usually with light fixture but not the form of light source occur, and must adopt and link up with the mode that lifts and install.In bulkhead lamp capable was replaced engineering, back two in traditional lamp stand, reflection shield, the E40 lamp socket often were removed and abandon, caused the huge wasting of resources.As seen, to produce the LED high power light source meet conventional light source profile and interface be the problem that has practicality in design.
3, the contradiction between temperature rise, light decay, life-span and the cost;
Continuation is example with the bulkhead lamp capable, even if LED bulkhead lamp capable on sale has in the market adopted very big radiator, the surface temperature rise of whole lamp body still reaches 30-35 degree centigrade, the inner Jie Wenzegenggao of LED.In market competition, the method that some manufacturer demotes with radiator, reaching reduces cost knocks down price to promote the purpose of product.Common radiator degradation is two kinds of approach normally, adopt aluminium section bar inferior or reduce the heat sink section bar size, these two kinds of ways have all objectively reduced the thermal capacity and the radiating efficiency of radiator, thereby raised the joint temperature of whole lamp temperature rise and LED, and finally cause the LED long-term work in too high temperature environment, quicken light decay, shorten the life-span.
Summary of the invention
For solving the problems of the technologies described above, the invention provides a kind of small, in light weight and heat radiation is good, the great power LED electric light source of long-life small-sized low noise active heat removal.
The great power LED electric light source of small-sized low noise active heat removal of the present invention, comprise lamp holder, constant-current driving power supply, radiator, high-power photo engine and lens, described lamp holder by four each other 90 ° screw be fixed on the radiator, the bottom of radiator is provided with lens, lamp holder is provided with air inlet one, the bottom of lamp holder is provided with power source cavity, is provided with constant-current driving power supply in the power source cavity; The top of described radiator is inlaid with circular quiet big air quantity fan, circular quiet big air quantity fan links to each other by circuit with constant-current driving power supply, the radiator bottom is provided with the high thermal conductivity aluminum matrix plate, the high thermal conductivity aluminum matrix plate is provided with high-power photo engine, and high-power photo engine links to each other by circuit with constant-current driving power supply; The place of keeping to the side, radiator top is provided with air inlet two, and the radiator outside is provided with air outlet near the edge of radiator blade near the place, bottom; The air inlet two of air inlet one from top to bottom, the outer wall of lamp holder, radiator and air outlet constitute the air channel.
Further, be provided with the detection protective device on described radiator and the high thermal conductivity aluminum matrix plate, detect protective device and adopt thermistor,, and judge whether whole lamp is in normal state with the temperature of perception radiator and high thermal conductivity aluminum matrix plate.
Further, described high thermal conductivity aluminum matrix plate closely cooperates by heat conductive silica gel and radiator.
Further, described high-power photo engine is gone here and there by power paster lamp pearl among 80-300 the 0.5W according to the power difference and is combined, and the lamp pearl evenly is arranged on the high thermal conductivity aluminum matrix plate.
Further, described lens are high transmission rate optical glass collector lens, and lens are fixed on the radiator by the stainless steel retainer ring, set up the silica gel dust ring between lens and the radiator.
Further; air outlet on air inlet one on the described lamp holder, the air inlet two on the radiator, circular quiet big air quantity fan, the radiator and detect protective device and constitute dynamical active heat removal system is to constant-current driving power supply and the heat radiation of high-power photo engine.
Preferably, described radiator is solid aluminium heronsbill radiator, and the diameter of radiator is 100-120mm, is preferably 100mm or 120mm, and the more unidimensional hollow heronsbill radiator of its thermal capacity is bigger, and heat is apart from weak point, radiating efficiency height.The quiet big air quantity fan of described circle is noise 15dB (distance 1 meter measure) only when discharge quantity of fan 13CFM, can select magnetic suspension fan or NANO Ceramic Bearing fan for use.
Preferably, described power source cavity is PC or ABS power source cavity.Described lamp holder is an E40 screw socket large scale lamp holder.Described constant-current driving power supply is high-power accurate constant-current driving power supply, can select tunable optical or can not two kinds of patterns of light modulation for use.
Beneficial effect compared with prior art of the present invention is:
1, cost performance: the cooperation in big air quantity fan and high-effect air channel, make the demand of radiator significantly reduce, significantly reduced and manufactured cost, material cost reduces up to 75%.Thereby making, this becomes a practicable thing guaranteeing that LED is in to reduce cost to knock down price under the prerequisite of works fine state.
2, the long-life: about 12-16 degree centigrade of the LED high power light source surface temperature rise of employing structure of the present invention, about 20 degrees centigrade of high thermal conductivity aluminum matrix plate temperature rise, LED joint temperature is well below 85 degrees centigrade of joint temperature of 50000 hour life-span defined.Because the air channel design has taken into account driving power, the temperature rise of the power component in the power supply is also very low simultaneously.Temperature rise on the aluminium electrolutic capacitor is no more than 20 degrees centigrade.Adopt degrees centigrade 10000 hours long-service-life aluminum electrolytic electric capacity of 105 degree in driving power, in the lamp body of 20 degrees centigrade of temperature rises, such electric capacity life-span can reach more than 80000 hours.The real long-life that this has guaranteed whole lamp, also make LED lamp environmental protection and energy saving feature of long life obtain real embodiment.
3, adaptability: adopting the big screw socket of E40 of main flow high power light source is interface, the lamp body external diameter is little, especially the model of 120mm diameter is suitable with the PAR38 size, consistent with the external diameter of conventional high-power energy-saving lamp, in the indoor place that the high-power floodlights of PAR38 such as auditorium, meeting-place, stadiums, music hall, cinema, museum, supermarket, market are widely used, can be used to directly replace conventional P AR38 halogen light source simultaneously.Adopt the LED high power light source profile of structure of the present invention little, in light weight, the light source that reaches 80W with optical output power is an example, only about 1.2 kilograms of its weight, and about 14 centimetres of entire length is applicable to most traditional recessed light fixtures.
4, high reliability is safeguarded cost with low: the present invention not only adopts fan to increase substantially radiating efficiency, make the luminous component and the drive part of LED lamp all be operated in the lower temperature environment, and outside constant-current driving power supply, increased working state detection device, at any time detect the state of LED lamp each several part, in case there is critical component to lose efficacy, then the LED lamp enters low-power consumption mode, close output or only output stage low-light level, can remind the attendant to safeguard, this has been avoided the LED lamp, especially the photo engine part is damaged in defective mode, has reduced maintenance cost.Simultaneously, the present invention is simple in structure, and easy disassembling reduces the labour cost of manufacturing and safeguarding greatly.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Fig. 2 is the structural representation of the present invention when dispelling the heat.
The specific embodiment
Below in conjunction with drawings and Examples, the specific embodiment of the present invention is described in further detail.Following examples are used to illustrate the present invention, but are not used for limiting the scope of the invention.
As shown in Figure 1, the great power LED electric light source of small-sized low noise active heat removal of the present invention, comprise lamp holder 1, radiator 3 and lens 4, described lamp holder 1 by four each other 90 ° screw be fixed on the radiator 3, the bottom of radiator 3 is provided with lens 4, lamp holder 1 is provided with air inlet one (not shown), and the bottom of lamp holder 1 is provided with power source cavity 2, is provided with constant-current driving power supply 5 in the power source cavity 2; The top of described radiator 3 is inlaid with circular quiet big air quantity fan 6, circular quiet big air quantity fan 6 and constant-current driving power supply 5 link to each other by circuit, radiator 3 bottoms are provided with high thermal conductivity aluminum matrix plate 7, high thermal conductivity aluminum matrix plate 7 is provided with high-power photo engine 8, and high-power photo engine 8 and constant-current driving power supply 5 link to each other by circuit; The place of keeping to the side, radiator 3 top is provided with air inlet 29, and radiator 3 outsides are provided with air outlet 10 near the edge of radiator blade near the place, bottom; The air inlet 29 of air inlet one from top to bottom, the outer wall of lamp holder 1, radiator 3 and air outlet 10 constitute the air channel.
Be provided with the detection protective device on described radiator 3 and the high thermal conductivity aluminum matrix plate 7, detect protective device and adopt thermistor,, and judge whether whole lamp is in normal state with the temperature of perception radiator 3 and high thermal conductivity aluminum matrix plate 7.
Described high thermal conductivity aluminum matrix plate 7 closely cooperates by heat conductive silica gel and radiator 3.
Described high-power photo engine 8 is gone here and there by power paster lamp pearl among 80-300 the 0.5W and is combined, and the lamp pearl evenly is arranged on the high thermal conductivity aluminum matrix plate 7.
Described lens 4 are high transmission rate optical glass collector lens, and lens 4 are fixed on the radiator 3 by the stainless steel retainer ring, set up silica gel dust ring (not shown) between lens 4 and the radiator 3.
Described power source cavity 2 is PC or ABS power source cavity.Described lamp holder 1 is an E40 screw socket large scale lamp holder.Described constant-current driving power supply 5 is high-power accurate constant-current driving power supply, can select tunable optical or can not two kinds of patterns of light modulation for use.
Described radiator 3 is solid aluminium heronsbill radiator, and the diameter of radiator 3 is 100-120mm, is preferably 100mm or 120mm, and the more unidimensional hollow heronsbill radiator thermal capacity of its thermal capacity is bigger, and heat is apart from weak point, radiating efficiency height.The quiet big air quantity fan 6 of described circle is noise 15dB (distance 1 meter measure) only when discharge quantity of fan 13CFM, can select magnetic suspension fan or NANO Ceramic Bearing fan for use.
Air outlet 10 on air inlet one on the described lamp holder 1, the air inlet 29 on the radiator 3, circular quiet big air quantity fan 6, the radiator 3 and detect protective device and constitute dynamical active heat removal system is taken into account the heat radiation of constant-current driving power supply 5 and the heat radiation of high-power photo engine 8; As shown in Figure 2, wind is entered by the air inlet on the lamp holder 1 one, outer wall along power source cavity 2 flows to radiator 3, converge with air inlet 29 on the radiator 3 and to enter in the radiator 3, via fan 6 air outlet 10 of wind from radiator 3 sides blown out, simultaneously constant-current driving power supply 5, radiator 3, high-power photo engine 8 are dispelled the heat; And by detecting the duty that protective device detects radiator 3, high thermal conductivity aluminum matrix plate 7.
The making of embodiment 1:80W E40LED light source:
1, the pcb board of the constant-current driving power supply 5 of 80W LED is circular, set up thermistor on this pcb board, be fit to be installed in the circular E40 lamp holder 1, for satisfying the electrical isolation requirement of constant-current driving power supply 5, between the AC portion and direct current component of circuit, all slot between the primary and secondary of transformer and cut off.This two-part fluting is handled, and has not only satisfied the demand for security on electric, also is an important ring in air channel simultaneously, to realize the heat radiation of air channel to constant-current driving power supply; And the constant-current driving power supply of making 5 detected;
2, make high-power photo engine 8, this high-power photo engine 8 is by power paster lamp pearl string among the 0.5W surplus 200 and combine; A lamp pearl surplus 200 evenly is arranged on the high thermal conductivity aluminum matrix plate, had both made full use of the advantage of the high light efficiency of middle power LED lamp pearl, low heat energy, evaded the ill effect of heat localization again; Simultaneously the high-power photo engine of making 8 is detected;
3, high-power photo engine 8 is installed on radiator 3, is used heat conductive silica gel to guarantee that high thermal conductivity aluminum matrix plate 7 closely contacts with radiator 3, reduce thermal resistance;
4, circular quiet big air quantity fan 6 is installed in radiator 3, simultaneously the quiet big air quantity fan 6 of circle is detected;
5, the installation and measuring protective device is in radiator 3 and high thermal conductivity aluminum matrix plate 7;
6, fixedly constant-current driving power supply 5 in power source cavity 2;
7, circular quiet big air quantity fan 6 and constant-current driving power supply 5 wiring and fixing;
8, by four screws lamp holder 1 is installed on the radiator 3;
9, high-power photo engine 8 and constant-current driving power supply 5 wiring and fixing;
10, lens 4 are installed on high-power photo engine 8;
11, whole lamp detects;
12, energising high temperature ageing;
13, vanning warehouse-in.
The making of embodiment 2:36W E40LED light source:
1, the pcb board of the constant-current driving power supply 5 of making 36W LED is circular, be fit to be installed in the circular E40 lamp holder 1, for satisfying the electrical isolation requirement of isolated power supply, between the AC portion and direct current component of circuit, all slot between the primary and secondary of transformer and cut off.This two-part fluting is handled, and has not only satisfied the demand for security on electric, also is an important ring in air channel simultaneously, to realize the heat radiation of air channel to constant-current driving power supply; And the constant-current driving power supply of making 5 detected;
2, make high-power photo engine 8, this high-power photo engine 8 is by power paster lamp pearl string among the 0.5W surplus 80 and combine; A lamp pearl surplus 80 evenly is arranged on the high thermal conductivity aluminum matrix plate, had both made full use of the advantage of the high light efficiency of middle power LED lamp pearl, low heat energy, evaded the ill effect of heat localization again; Simultaneously the high-power photo engine of making 8 is detected;
3, high-power photo engine 8 is installed on radiator 3, is used heat conductive silica gel to guarantee that high thermal conductivity aluminum matrix plate 7 closely contacts with radiator 3, reduce thermal resistance;
4, circular quiet big air quantity fan 6 is installed in radiator 3, simultaneously the quiet big air quantity fan 6 of circle is detected;
5, the installation and measuring protective device is in radiator 3 and high thermal conductivity aluminum matrix plate 7;
6, fixedly constant-current driving power supply 5 in power source cavity 2;
7, circular quiet big air quantity fan 6 and constant-current driving power supply 5 wiring and fixing;
8, by four screws lamp holder 1 is installed on the radiator 3;
9, high-power photo engine 8 and constant-current driving power supply 5 wiring and fixing;
10, lens 4 are installed on high-power photo engine 8;
11, whole lamp detects;
12, energising high temperature ageing;
13, vanning warehouse-in.
The product of the present invention that the foregoing description is made makes the demand of radiator significantly reduce owing to adopted the cooperation in circular quiet big air quantity fan and air channel, has significantly reduced and has manufactured cost, and material cost reduces up to 75%; Adopt said structure the about 12-16 of surface temperature rise degree centigrade, about 20 degrees centigrade of high thermal conductivity aluminum matrix plate temperature rise, LED joint temperature is well below 85 degrees centigrade of joint temperature of 50000 hour life-span defined, simultaneously because the air channel design has taken into account constant-current driving power supply, the temperature rise of the power component in the constant-current driving power supply is also very low, and the temperature rise on the aluminium electrolutic capacitor is no more than 20 degrees centigrade.Adopt 105 degrees centigrade of long-service-life aluminum electrolytic electric capacity of 10000 hours in constant-current driving power supply, in the lamp body of 20 degrees centigrade of temperature rises, such electric capacity life-span can reach more than 80000 hours.Adopting the big screw socket of E40 of main flow high power light source is interface (lamp holder), and the lamp body external diameter is little, and especially the model of 120mm diameter is suitable with the PAR38 size, and is consistent with the external diameter of conventional high-power energy-saving lamp; Profile is little, in light weight, and the light source that reaches 80W with optical output power is an example, only about 1.2 kilograms of its weight, and about 14 centimetres of entire length is applicable to most traditional recessed light fixtures; Constant-current driving power supply has increased the detection protective device of duty, detects the state of LED lamp each several part at any time.
The above only is a preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the technology of the present invention principle; can also make some improvement and modification, these improve and modification also should be considered as protection scope of the present invention.

Claims (10)

1. the great power LED electric light source of a small-sized low noise active heat removal, comprise lamp holder, constant-current driving power supply, radiator, high-power photo engine and lens, described lamp holder by four each other 90 ° screw be fixed on the radiator, the bottom of radiator is provided with lens, it is characterized in that: lamp holder is provided with air inlet one, the bottom of lamp holder is provided with power source cavity, is provided with constant-current driving power supply in the power source cavity; The top of described radiator is inlaid with circular quiet big air quantity fan, circular quiet big air quantity fan links to each other by circuit with constant-current driving power supply, the radiator bottom is provided with the high thermal conductivity aluminum matrix plate, the high thermal conductivity aluminum matrix plate is provided with high-power photo engine, and high-power photo engine links to each other by circuit with constant-current driving power supply; The place of keeping to the side, described radiator top is provided with air inlet two, and the radiator outside is provided with air outlet near the edge of radiator blade near the place, bottom; The air inlet two of air inlet one from top to bottom, the outer wall of lamp holder, radiator and air outlet constitute the air channel.
2. the great power LED electric light source of small-sized low noise active heat removal as claimed in claim 1; it is characterized in that; be provided with the detection protective device on described radiator and the high thermal conductivity aluminum matrix plate; detect protective device and adopt thermistor, and detect the whole lamp duty of temperature judgement of radiator and high thermal conductivity aluminum matrix plate.
3. the great power LED electric light source of small-sized low noise active heat removal as claimed in claim 2 is characterized in that, described high thermal conductivity aluminum matrix plate closely cooperates by heat conductive silica gel and radiator.
4. the great power LED electric light source of small-sized low noise active heat removal as claimed in claim 3 is characterized in that, described high-power photo engine is gone here and there by power paster lamp pearl among 80-300 the 0.5W and combined, and the lamp pearl evenly is arranged on the high thermal conductivity aluminum matrix plate.
5. the great power LED electric light source of small-sized low noise active heat removal as claimed in claim 4, it is characterized in that, described lens are high transmission rate optical glass collector lens, and lens are fixed on the radiator by the stainless steel retainer ring, set up the silica gel dust ring between lens and the radiator.
6. as the great power LED electric light source of each described small-sized low noise active heat removal of claim 1-5; it is characterized in that; air outlet on air inlet one on the described lamp holder, the air inlet two on the radiator, circular quiet big air quantity fan, the radiator and detect protective device and constitute dynamical active heat removal system, and to constant-current driving power supply and high-power photo engine forced heat radiation.
7. the great power LED electric light source of small-sized low noise active heat removal as claimed in claim 6 is characterized in that, described radiator is solid aluminium heronsbill radiator, and the diameter of radiator is 100-120mm.
8. the great power LED electric light source of small-sized low noise active heat removal as claimed in claim 7 is characterized in that, described constant-current driving power supply is high-power accurate constant-current driving power supply, selects tunable optical or can not two kinds of patterns of light modulation for use.
9. the great power LED electric light source of small-sized low noise active heat removal as claimed in claim 8 is characterized in that, described power source cavity is PC or ABS power source cavity.
10. the great power LED electric light source of small-sized low noise active heat removal as claimed in claim 9 is characterized in that, lamp holder is the E40 screw socket.
CN201310120600.7A 2013-04-09 2013-04-09 The great power LED electric light source of Miniature low-noise active heat removal Active CN103216755B (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103486523A (en) * 2013-09-17 2014-01-01 浙江中博光电科技有限公司 Mining lamp
CN106574625A (en) * 2014-09-16 2017-04-19 飞利浦照明控股有限公司 Cooling fan

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CN101639171A (en) * 2008-07-31 2010-02-03 东芝照明技术株式会社 Bulb-shaped lamp
CN101865372A (en) * 2009-04-20 2010-10-20 富准精密工业(深圳)有限公司 Light-emitting diode lamp
CN101881404A (en) * 2010-07-01 2010-11-10 王干 Intelligently controlled forced convection radiation LED streetlamp system

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101639171A (en) * 2008-07-31 2010-02-03 东芝照明技术株式会社 Bulb-shaped lamp
CN101865372A (en) * 2009-04-20 2010-10-20 富准精密工业(深圳)有限公司 Light-emitting diode lamp
CN101881404A (en) * 2010-07-01 2010-11-10 王干 Intelligently controlled forced convection radiation LED streetlamp system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103486523A (en) * 2013-09-17 2014-01-01 浙江中博光电科技有限公司 Mining lamp
CN106574625A (en) * 2014-09-16 2017-04-19 飞利浦照明控股有限公司 Cooling fan
CN106574625B (en) * 2014-09-16 2018-06-15 飞利浦照明控股有限公司 Cooling fan

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