CN101858499A - Illumination device - Google Patents
Illumination device Download PDFInfo
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- CN101858499A CN101858499A CN200910132027A CN200910132027A CN101858499A CN 101858499 A CN101858499 A CN 101858499A CN 200910132027 A CN200910132027 A CN 200910132027A CN 200910132027 A CN200910132027 A CN 200910132027A CN 101858499 A CN101858499 A CN 101858499A
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- Prior art keywords
- centrifugal fan
- accommodation space
- lighting device
- gas
- light source
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Abstract
The invention discloses an illumination device, which comprises a shell, a light source, a centrifugal fan, and a radiator. The shell is provided with an accommodating space, a plurality of air inlets, and a plurality of air outlets, wherein the accommodating space is communicated with the outside through the air inlets and air outlets; and the light source, the centrifugal fan, and the radiator are arranged inside the accommodating space. The radiator comprises a base and a plurality of radiating fins which are connected with the base, wherein the base is connected with the light source, and the radiating fins are radial and surround the centrifugal fan. An air passage is formed between any two adjacent radiating fins; and the outside air enters the accommodating space through the air inlets, flows into the centrifugal fan along the axial direction of the centrifugal fan, and flows out of the accommodating space along the radial direction of the centrifugal fan through the air passage and the air outlets.
Description
[technical field]
The invention relates to a kind of lighting device, and particularly about a kind of lighting device with better cooling efficiency.
[background technology]
Recently, because the luminosity and the luminous efficiency of light emitting diode promote constantly, simultaneously the white light emitting diode of high brightness is also by volume production successfully, thus there is white light emitting diode to be used in the lighting device gradually, as indoor lighting and outdoor street lighting etc.Yet high-power light emitting diode all faces the problem of heat radiation aspect, if light emitting diode is operated under too high temperature conditions, the light luminance that might cause led lamp to provide is decayed, and degradation problem under the life-span is arranged.
In order to solve heat dissipation problem, the existing practice has two, and the first is utilized radiator, makes its contact LED source, in the mode by free convection the heat in the lighting device is shed.Yet,, therefore be only applicable to lower-powered LED source because the radiating efficiency of this method is lower.In addition, existing another be except disposing above-mentioned radiator, more in lighting device, to increase by an aerofoil fan as rule.
Fig. 1 is the schematic diagram of existing a kind of lighting device.Please refer to Fig. 1, lighting device 100 comprises a light source 110, a radiator 120, an aerofoil fan 130 and a power supply unit 140.Yet, as gas flow direction shown in Figure 1, because aerofoil fan 130 only can be from monolateral air inlet, and aerofoil fan 130 is configured between light source 110 and the power supply unit 140, so can meet with obstruction and can't successfully flow from aerofoil fan 130 effluent airs.
Moreover, the flow field of aerofoil fan 130 is a turbulent flow (Turbulent flow), its fin orientation with radiator 120 can't be parallel, make and cause flow to descend because of flow resistance increases from the aerofoil fan effluent air, therefore the gas in external environment flows into lighting device 100 be in also can't successfully being discharged from outside the lighting device 100 through aerofoil fan 130 backs, also so that the heat that causes lighting device 100 to be produced be accumulated in the lighting device 100.
[summary of the invention]
The present invention proposes a kind of lighting device, has good radiating efficiency.
Other purposes of the present invention and advantage can be further understood from the disclosed technical characterictic of the present invention.
For reaching one of above-mentioned or partly or all purposes or other purposes, the invention provides a kind of lighting device, comprise a shell, a light source, a centrifugal fan and a radiator.Shell has accommodation space, a plurality of air inlet and a plurality of gas outlet, and wherein accommodation space is in communication with the outside through air inlet and gas outlet.Light source, centrifugal fan and heat sink arrangements are in accommodation space.Radiator comprises base and a plurality of radiating fin that is connected with base, and wherein base is connected in light source, and radiating fin is radial and centers on centrifugal fan.Has gas flow between the wantonly two adjacent radiating fins.Extraneous gas is suitable for flowing into accommodation space from air inlet, and along the axial inflow centrifugal fan of centrifugal fan, and radially flows out accommodation space via gas flow and gas outlet along centrifugal fan.
Based on above-mentioned, in the above embodiment of the present invention, because lighting device has centrifugal fan and radiator, and the fin of radiator upwards is radial in the footpath of centrifugal fan, therefore can improve the radiating efficiency of lighting device.In other words, the operating temperature of light source can maintain in the permissible range, to improve the service life of lighting device.
[description of drawings]
Fig. 1 is the schematic diagram of existing a kind of lighting device.
Fig. 2 is the schematic diagram according to the lighting device of one embodiment of the invention.
Fig. 3 is the vertical view of centrifugal fan and radiator in the lighting device of Fig. 2.
Fig. 4 is the partial top view of centrifugal fan and radiator in the lighting device of another embodiment of the present invention.
Fig. 5 is the part sectioned view that is positioned at the air inlet of lampshade in the lighting device of Fig. 2.
100: lighting device
110: light source
120: radiator
130: aerofoil fan
140: power supply unit
200: lighting device
210: shell
212: air inlet
214: the gas outlet
216: lampshade
216a: shielding portion
217: the first housings
218: the second housings
220: light source
222: light emitting diode
224: second circuit board
224a: second perforate
230: centrifugal fan
240: radiator
242: base
242a: the 3rd perforate
244,270: radiating fin
244a, 272: gas flow
250: power supply unit
252: first circuit board
252a: first perforate
260: connector
I: axially
R: radially
S: accommodation space
State feature and advantage on the present invention and can become apparent for allowing, an embodiment cited below particularly, and cooperate appended graphicly, be described in detail below.
[specific embodiment]
The explanation of following each embodiment is graphic with reference to what add, can be in order to the specific embodiment of enforcement in order to illustration the present invention.The direction term that the present invention mentioned, for example " on ", D score, " preceding ", " back ", " left side ", " right side " etc., only be direction with reference to annexed drawings.Therefore, the direction term of use is to be used for explanation, but not is used for limiting the present invention.
Fig. 2 is the schematic diagram according to the lighting device of one embodiment of the invention.Please refer to Fig. 2, lighting device 200 comprises a shell 210, a light source 220, a centrifugal fan 230 and a radiator 240.Shell 210 has an accommodation space S, a plurality of air inlet 212 and a plurality of gas outlet 214, and wherein accommodation space S is in communication with the outside through air inlet 212 and gas outlet 214.Light source 220, centrifugal fan 230 are disposed in the accommodation space S with radiator 240.Radiator 240 comprises base 242 and a plurality of radiating fin 244 that is connected with base 242, and wherein base 242 is connected in light source 220, and dissipation is gone out via radiating fin 244 in order to heat that light source 220 is produced.
Fig. 3 is the vertical view of centrifugal fan and radiator in the lighting device of Fig. 2.Please also refer to Fig. 2 and Fig. 3, in the present embodiment, radiating fin 244 linearly type radial and its be centered around centrifugal fan 230 peripheries.Has gas flow 244a between the wantonly two adjacent radiating fins 244.When centrifugal fan 230 runnings, extraneous gas is suitable for flowing into accommodation space S from air inlet 212, and flow into centrifugal fan 230 along the axial I of centrifugal fan 230, and flow out accommodation space S along the radially R of centrifugal fan 230 via gas flow 244a and gas outlet 214, to reach the purpose of heat radiation.
In the lighting device 200 of present embodiment, directly upwards be the radiating fin 244 of radial arrangement owing to centrifugal fan 230 and at it, add and have a plurality of air inlets 212 and a plurality of gas outlets 214 on the shell 210, therefore, above-mentioned these members form the circulation flow field in the accommodation space S of lighting device 200, make gas circulate in external environment and accommodation space S constantly.The heat that this measure is produced when making lighting device 200 runnings is constantly gone out by dissipation in accommodation space S by convection action.Therefore, the lighting device 200 of present embodiment has preferable radiating efficiency, and can further promote the service life of the luminous power and the lighting device 200 of light source 220.
Refer again to Fig. 2, in the present embodiment, lighting device 200 also comprises a power supply unit 250 and a connector 260, and wherein power supply unit 250 is disposed in the spatial accommodation S, and connector 260 then is disposed at the side of the relative accommodation space S of shell 210.Connector 260 is electrically connected to power supply unit 250, with the electric power transfer of outside to power supply unit 250.Power supply unit 250 for example is a transformer or a rectifier, and it is electrically connected at light source 220 and centrifugal fan 230, is fit to light source 220 and centrifugal fan 230 employed power supplys so that external power source is converted to.
Moreover power supply unit 250 comprises a first circuit board 252, and it has a plurality of first perforate 252a, and the portion gas that is flowed into from air inlet 212 can flow into centrifugal fan 230 by these first perforates 252a.
On the other hand, light source 220 comprises a plurality of light emitting diodes 222 and a second circuit board 224.In the present embodiment, these light emitting diodes 222 are distributed on the second circuit board 224.Second circuit board 224 has a plurality of second perforate 224a, and the base 242 of radiator 240 also has a plurality of the 3rd perforate 242a, with the function class of the above-mentioned first perforate 252a seemingly, when gas when air inlet 212 flows into, portion gas can be in regular turn flows into centrifugal fan 230 via these second perforate 224a and the 3rd perforate 242a.
Based on above-mentioned, because centrifugal fan 230 and radiator 240 are configured between light source 220 and the power supply unit 250, and be distributed between these first perforates on first circuit board 252 and the second circuit board 224 and the 252a second perforate 224a, make the gas that flows into from air inlet 212 to flow into centrifugal fan 230 by these perforates.This measure constitutes ambient atmos in the flow field of accommodation space S, and makes its drive manner that meets centrifugal fan 230 bidirection air intakes, and the heat that light source 220 and power supply unit 250 are produced dissipates to centrifugal fan 230 along with gas flowfield.Generally speaking, centrifugal fan 230 for example comprises a loam cake, a lower cover and is arranged at the centrifuge blade between loam cake and the lower cover, and in the present embodiment, because the loam cake of centrifugal fan 230 and the collection wind function of lower cover can be replaced by first circuit board 252 and second circuit board 224, therefore, the centrifugal fan 230 of present embodiment can be the centrifuge blade pattern, with reduction weight and cost, but not as limit.
Refer again to Fig. 3, for the gas flowfield in the complete framework accommodation space S, make it be communicated with accommodation space S and external environment and constantly circulate, in the present embodiment, radiating fin 244 is around centrifugal fan 230, and on the radially R of centrifugal fan 230 type radial arrangement linearly.Because the bearing of trend of radiating fin 244 is consistent with the air-out direction of centrifugal fan 230, therefore can be along flowing out accommodation space S via gas outlet 214 with its gas flow 244a in the same way from the radially R of centrifugal fan 230 effluent air.This measure framework complete circulation flow field, make the direction of following to some extent from centrifugal fan 230 effluent airs, and the heat that will conduct to radiating fin 244 from light source 220 whereby spread out of accommodation space S through flow field thus in the lump, to reach the purpose of heat radiation.
Fig. 4 is the partial top view of centrifugal fan and radiator in the lighting device of another embodiment of the present invention.Please refer to Fig. 4, different with the foregoing description is, the radiating fin 270 of radiator is the wing, and to cut open type radial, and the arrangement mode of its inclination can make gas along the direction in flow field and successfully pass through gas flow 272 between the radiating fin 270.
Refer again to Fig. 2, in the present embodiment, the shell 210 of lighting device 200 comprises a lampshade 216, one first housing 217 and one second housing 218.Lampshade 216 covers cover light source 220, the first housings 217 and hold power supply unit 250, and above-mentioned these air inlets 212 are distributed in the lampshade 216 and first housing 217 respectively.Second housing 218 is connected between the lampshade 216 and first housing 217, to form accommodation space S with the lampshade 216 and first housing 217.Second housing 218 is around centrifugal fan 230 and radiator 240, and second housing 218 has above-mentioned these gas outlets 214.
In addition, Fig. 5 is the part sectioned view that is positioned at the air inlet of lampshade in the lighting device of Fig. 2.Please refer to Fig. 5, in the present embodiment, lampshade 216 has a plurality of shielding portion 216a, and it is adjacent to these air inlets 212, and is positioned at accommodation space S.And in other embodiments, shielding portion 216a also can be positioned at outside the accommodation space S.These shielding portions 216a in order to prevent foreign object for example dust enter, also or as avoid insect to be strayed into lighting device 200 because of phototaxis.
In sum, in the above embodiment of the present invention, lighting device will flow into the axial two-sided inflow centrifugal fan of the gas of accommodation space along centrifugal fan from air inlet by centrifugal fan.Moreover radiating fin is also around centrifugal fan, and directly upwards is radial arrangement at it, so that the centrifugal fan effluent air is via gas flow and gas outlet and flow out accommodation space.Therefore, this measure is configured to the flow field that bidirectional flow is gone into and flowed out in accommodation space, and can constantly between accommodation space and external environment, circulate, make lighting device constantly carry out heat exchange with external environment, with the operating temperature of reduction lighting device, and and then improve the luminous efficiency of light source and the service life of lighting device.
Though the present invention discloses as above with embodiment; right its is not in order to limit the present invention; have in the technical field under any and know the knowledgeable usually; without departing from the spirit and scope of the present invention; when can doing a little change and retouching, so protection scope of the present invention is as the criterion when looking the claim person of defining.In addition, arbitrary embodiment of the present invention or claim must not reached whole purposes or advantage or the characteristics that the present invention discloses.
Claims (10)
1. lighting device comprises:
One shell has an accommodation space, a plurality of air inlet and a plurality of gas outlet, and wherein this accommodation space is in communication with the outside through these air inlets and these gas outlets;
One light source is disposed in this accommodation space;
One centrifugal fan is disposed in this accommodation space; And
One radiator, be disposed in this accommodation space, this radiator comprises a base and a plurality of radiating fin that is connected with this base, wherein this base is connected in this light source, these radiating fins are radially around this centrifugal fan, has a gas flow between wantonly two adjacent these radiating fins, extraneous gas is suitable for flowing into this accommodation space from these air inlets, and along this centrifugal fan of axial inflow of this centrifugal fan, and along this centrifugal fan radially via these gas flows and these gas outlets and flow out this accommodation space.
2. lighting device as claimed in claim 1, it is characterized in that: also comprise a power supply unit, be disposed in this accommodation space, wherein this centrifugal fan and this radiator are between this power supply unit and this light source, and this power supply unit electrically connects this light source and this centrifugal fan.
3. lighting device as claimed in claim 2 is characterized in that: also comprise a connector, be disposed at one of this shell side, this side of this shell and this connector relative with this accommodation space electrically connects this power supply unit.
4. lighting device as claimed in claim 2, it is characterized in that: this power supply unit comprises a first circuit board, this first circuit board has a plurality of first perforates, and this gas of part that flows into this accommodation space from these air inlets flows into this centrifugal fan via these first perforates.
5. lighting device as claimed in claim 2 is characterized in that: this shell comprises:
One lampshade, cover covers this light source;
One first housing holds this power supply unit; And
One second housing, be connected between this lampshade and this first housing, make this second housing, this lampshade and this first housing form this accommodation space, this second housing is around this centrifugal fan and this radiator, wherein these air inlets are arranged at this lampshade and this first housing respectively, and these gas outlets are arranged at this second housing.
6. lighting device as claimed in claim 5 is characterized in that: this lampshade has a plurality of shielding portions that are adjacent to these air inlets, enters this accommodation space in order to prevent foreign object via these air inlets.
7. lighting device as claimed in claim 1 is characterized in that: this light source comprises a second circuit board, and it has a plurality of second perforates, and this gas of part that flows into this accommodation space from these air inlets flows into this centrifugal fan via these second perforates.
8. lighting device as claimed in claim 1 is characterized in that: this base has a plurality of the 3rd perforates, and this gas of part that flows into this accommodation space from these air inlets flows into this centrifugal fan via these the 3rd perforates.
9. lighting device as claimed in claim 1 is characterized in that: these radiating fins linearly type are radial.
10. lighting device as claimed in claim 1 is characterized in that: these radiating fins are the wing, and to cut open type radial.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101320275A CN101858499B (en) | 2009-04-13 | 2009-04-13 | Illumination device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101320275A CN101858499B (en) | 2009-04-13 | 2009-04-13 | Illumination device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101858499A true CN101858499A (en) | 2010-10-13 |
| CN101858499B CN101858499B (en) | 2012-02-22 |
Family
ID=42944568
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101320275A Expired - Fee Related CN101858499B (en) | 2009-04-13 | 2009-04-13 | Illumination device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101858499B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102434809A (en) * | 2011-12-22 | 2012-05-02 | 都江堰光明光电材料有限责任公司 | Glass lighting lamp with heat radiating function |
| CN103047560A (en) * | 2012-11-29 | 2013-04-17 | 安徽冠宇光电科技有限公司 | Automatic temperature control light-emitting diode (LED) lamp |
| CN106979462A (en) * | 2017-04-07 | 2017-07-25 | 江苏浦亚照明科技股份有限公司 | Using the LED lamp of porous metal material radiator |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2646869Y (en) * | 2003-06-20 | 2004-10-06 | 昆山迪生电子有限公司 | A heat radiating structure |
| JP3994948B2 (en) * | 2003-09-16 | 2007-10-24 | ソニー株式会社 | Cooling device and electronic equipment |
| CN101368719B (en) * | 2007-08-13 | 2011-07-06 | 太一节能系统股份有限公司 | LED lamp |
-
2009
- 2009-04-13 CN CN2009101320275A patent/CN101858499B/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102434809A (en) * | 2011-12-22 | 2012-05-02 | 都江堰光明光电材料有限责任公司 | Glass lighting lamp with heat radiating function |
| CN103047560A (en) * | 2012-11-29 | 2013-04-17 | 安徽冠宇光电科技有限公司 | Automatic temperature control light-emitting diode (LED) lamp |
| CN106979462A (en) * | 2017-04-07 | 2017-07-25 | 江苏浦亚照明科技股份有限公司 | Using the LED lamp of porous metal material radiator |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101858499B (en) | 2012-02-22 |
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| PB01 | Publication | ||
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Granted publication date: 20120222 Termination date: 20140413 |