CN204127805U - The COB track lamp of active heat removal - Google Patents
The COB track lamp of active heat removal Download PDFInfo
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- CN204127805U CN204127805U CN201420665066.8U CN201420665066U CN204127805U CN 204127805 U CN204127805 U CN 204127805U CN 201420665066 U CN201420665066 U CN 201420665066U CN 204127805 U CN204127805 U CN 204127805U
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- radiator
- light source
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Abstract
The utility model provides a kind of COB track lamp of active heat removal, it comprises lamp holder and light portion, lamp holder (120) mainly comprises driving power and outer cover of lamp holder, light portion (100) mainly comprises face ring (1), cover (2), reflector (3), light source (4), radiator (6) and fan (8), it is characterized in that: described radiator (6) has pedestal (601), the end face of this pedestal arranges radiator (602), described fan (8) is fixed on the free end deviating from this pedestal (601) of radiator (602), described light source is fixed on the bottom surface (603) of pedestal (601).The heat conduction that COB guiding track lamp of the present utility model is improved and heat dispersion, at the normal temperature that radiator and COB light source are operated in, ensure light efficiency stability, reduce light decay, extend COB service life.
Description
Technical field
The utility model relates to track lamp field, in particular to the COB track lamp of active heat removal.
Background technology
By known COB (Chip On Board: the chip on board) track lamp of prior art, it comprises guide rail, the lamp socket be arranged on guide rail, the lamp holder be fixed on lamp socket, the COB light source be arranged in lamp holder, top in described guide rail is provided with two conducting strips, is provided with the ditch type groove of a strip in the bottom of guide rail; The top of lamp socket is a top board, and the top of top board is provided with two flexible terminals of convex; The top board of lamp socket is set in described guide rail, and two flexible terminals of top board contact with two conducting strips in described guide rail respectively, and lamp socket directly to embed in guide rail and to move in guide rail, to adjust light projection position.COB track lamp has that luminous efficiency is high, power saving environmental protection, the advantage that removable, practical, heavy metal free pollutes, color is pure, abundant, high brightness and life-span are grown, be widely used in the various room lighting place of natural science museum, exhibition of paintings shop, clothes brand shop, each hypermarket, hospital, family property city, hotel, laboratory etc.
COB light source operationally can produce more heat, and needing derives heat in time and be dispersed in environment, otherwise the life-span that will affect COB light source even cannot work.Especially for high-power COB light source, heat dissipation problem has become the technical bottleneck affecting its extensive use.Existing COB track lamp all adds fan by radiator or radiator and dispels the heat.
Such as disclose a kind of LED area light source track lamp (i.e. COB track lamp) with fan by CN202065820U, comprise reflective mirror, LED light source component, radiator and fan, this radiator is made up of with the radiating fin be positioned on this radiator body excircle the radiator body of hollow cylinder, LED light source component is located in reflective mirror, reflective mirror and LED light source component are located in the hollow cylindrical cavity of this radiator, and fan is located at below this LED light source component.In this LED track lamp, LED light source component is positioned at reflective mirror on the one hand, reflective mirror is positioned at the hollow cylindrical cavity of radiator, cause the contact of this LED light source component and radiator insufficient, the heat that LED light source component produces can not conduct to radiator rapidly and be shed by radiator, on the other hand, radiating fin on radiator is distributed on the cylindrical outer surface of radiator body with at interval and axially extending in the circumferential, the air stream produced by fan is promptly flow through vertically between radiating fin, fully do not contact with radiating fin, thus radiating efficiency is low, waste fan power, radiating effect is also unsatisfactory, especially for the LED area light source track lamp of relatively high power easily cause light source substrate and skin temperature high, the light decay of lamp is fast, reduce service life.
Utility model content
The purpose of this utility model is to provide that a kind of structure is simple, the COB track lamp of the active heat removal of good heat dissipation effect, to reduce COB substrate temperature, ensures light efficiency stability, reduces light decay, extends COB light source service life.
This utility model is provided to a kind of COB track lamp of active heat removal, it comprises lamp holder and light portion, lamp holder comprises driving power and outer cover of lamp holder, light portion comprises face ring, cover, reflector, light source, radiator and fan, wherein, described radiator has pedestal, and the end face of this pedestal arranges radiator, what described fan was fixed on radiator deviates from the free end of this pedestal, and described light source is fixed on the bottom surface of pedestal.
According to the utility model, COB light source is fixed on the bottom surface of pedestal, allows COB substrate contact completely with radiator, utilizes radiator heat high conductance, be transmitted to fast on radiator by heat that COB light source produces by substrate.By radiator is arranged on the end face of pedestal, fan is fixed on the free end of radiator, strengthen the forced convertion on air opposite heat sink surface, improve radiating efficiency, ensure that heat is not piled up, at the normal temperature that radiator and COB light source are operated in, ensure light efficiency stability, reduce light decay, extend COB service life.
Further scheme of the present utility model proposes, and described pedestal is disc, and described radiator is multiple, and each radiator is strip, and the central axis at interval around this pedestal in described pedestal circumference arranges.
By base structure being become disc and arrange the radiator around arrangement on pedestal, obtain columniform radiator on the whole, this be particularly useful for circular COB light source and with the coordinating of fan, larger area of dissipation can be obtained with little radiator volume, improve radiating effect, large radiating efficiency can be obtained by little structure.
According to the utility model, circular gap on pedestal in radial direction between outermost one group of radiator forms air outlet, what promoted by fan flows out from the air outlet of this side for the air stream cooled, instead of directly flow out in the middle of radiator base, extend air flow path, improve the utilization of radiating efficiency and fan power.
According to the further scheme of utility model, be provided with fan cover, described fan is contained in described fan cover, and the bottom of this fan cover is provided with air inlet.Suitable design air inlet and air outlet, make the area of air outlet be greater than the area of this air inlet.
By the area design of air outlet being greater than the area of air inlet, make at radiator inner and especially air outlet place keep certain negative pressure, thus air from wind inlet of fan through radiator to the circulation effect of air outlet and therefore radiating effect keep best.
The utility model advantageously proposes further, and described radiator comprises at least one radiating fin extended in the axial direction.Preferably the quantity of described radiating fin is two, and V-shaped arrangement, the V-arrangement opening that this radiating fin is formed is towards central axis.
Pass through radiating fin, especially the radiating fin of V-arrangement arrangement, further increase area of dissipation on the one hand, the air being sent into especially marginal portion in radiator by fan is made directly to overflow from air outlet on the other hand, but fully can contact with radiator, further increase radiating effect, more effectively utilize fan power.
The utility model proposes further, and the sidewall of described fan cover extends beyond the top of radiator in the axial direction, makes the sidewall of fan cover cover the free end of described radiator.Prevent thus air directly from fan or radiator top flow out, air can only be flowed out from the side of described radiator in the middle and lower part of radiator, adds the path of flowing, further improve heat dispersion, effectively make use of fan power.When ensureing certain radiating effect, the fan of more small-power, more small size can be used.
According to the utility model, described radiator is preferably cold forging radiator shaping integratedly.Cold forging radiator is compared with traditional die casting aluminium or car aluminium radiator, and thermal conductivity factor is higher, dispels the heat faster.And radiator adopts cold forging method manufacture and disposal molding, manufacture method is comparatively simple, be applicable to large-scale production, and cost is lower.In the utility model, the cross section of described radiator is preferably circular and their any combination of rectangle, trapezoidal, fan-shaped, star, s shape, breach.
The utility model proposes further, and described light source is bonded on the bottom surface of radiator by heat-conducting silicone grease.Heat-conducting silicone grease has high thermal conductivity, splendid thermal conductivity, wider serviceability temperature, good stability in use.The utility model by being coated with the heat-conducting silicone grease of last layer high thermal conductivity between light source and radiator, and light source is fully contacted by heat-conducting silicone grease with radiator, greatly increases the efficiency of heat to heat sink of light source generation.Therefore, the utility model can by the radiating requirements meeting high power light source compared with the radiator of minor structure and the fan of smaller power.
The utility model proposes further, arranges the temperature detect switch (TDS) of connecting with described light source, light source side on the bottom surface that this temperature detect switch (TDS) is preferably fixed on radiator.
The COB track lamp of the active heat removal that the utility model provides; by installing temperature switch device additional on a heat sink; even if make fan not work; the substrate temperature of light source reach a critical-temperature such as 75 degree time; light source input power meeting auto-breaking; duplicate protection ensures that light source in normal temperature work, the too high minimizing of Yin Wendu can not make its life-span reduce and strengthen light decay.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme of the utility model embodiment, be briefly described to the accompanying drawing used required in embodiment below, be to be understood that, the following drawings illustrate only some embodiment of the present utility model, therefore the restriction to scope should be counted as, for those of ordinary skill in the art, under the prerequisite not paying creative work, other relevant accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of the COB track lamp according to active heat removal of the present utility model;
Fig. 2 is the exploded view of the light portion according to the first embodiment of the present utility model;
Fig. 3 is the front view of the radiator according to the first embodiment of the present utility model;
Fig. 4 is the top view of the radiator according to the first embodiment of the present utility model;
Fig. 5 is the perspective view of the fan cover according to the second embodiment of the present utility model;
Fig. 6 is the partial exploded view of the light portion according to the 3rd embodiment of the present utility model, wherein light source bracket, light source and radiator is only shown, is provided with thermal conductive silicon lipid layer between this light source and radiator;
Fig. 7 is the partial exploded view of the light portion according to the 4th embodiment of the present utility model, wherein light source bracket, light source and radiator is only shown, is provided with temperature detect switch (TDS) on a heat sink.
Detailed description of the invention
For making the object of the utility model embodiment, technical scheme and advantage clearly, below in conjunction with the accompanying drawing in the utility model embodiment, technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is the utility model part embodiment, instead of whole embodiments.The assembly of the utility model embodiment describing and illustrate in usual accompanying drawing herein can be arranged with various different configuration and design.Therefore, below to the detailed description of the embodiment of the present utility model provided in the accompanying drawings and the claimed scope of the present utility model of not intended to be limiting, but selected embodiment of the present utility model is only represented.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
Fig. 1 and Fig. 2 illustrates the first embodiment of the COB track lamp of the utility model active heat removal.
As illustrated in fig. 1 and 2, the COB track lamp of this active heat removal comprises lamp holder 120 and light portion 100, lamp holder 120 mainly comprises driving power for light source and outer cover of lamp holder, and light portion 100 comprises face ring 1, cover 2, reflector 3, light source 4, light source bracket 5, radiator 6, blower tray 7 and fan 8.
Light source 4 is circular COB light source, also can be other shape as square, strip etc.Reflector 3 is hollow conic, and by its less end cover on light source 4, the light orientation sent for making light source 4 is assembled.Cover 2 is made up of optical lens, is placed in the larger end of reflector 3, mainly for the protection of reflector 3 and light source 4.Face ring 1 is made of plastics usually, and for being fixed in lamp cylinder 11 by cover 2, reflector 3, this face ring 1 covers the circumferential section of cover 2, reflector 3.This face ring 1 is provided with central through hole, passes through for the light making light source 4 produce.
Radiator 6 has pedestal 601, and the end face of this pedestal arranges radiator 602, and these radiators raise up from this end face with being preferably perpendicular to this end face.Fan 8 is fixed on the free end deviating from this pedestal 601 of radiator 602.Be provided with fan cover 10 at fan 8 back side, the bottom or sidewall of this fan cover 10 are provided with the air inlet of the air for cooling radiator.Fan net 9 is also provided with, for the protection of the blade of fan 8 between fan cover and fan.Fan 8, fan net 9 are contained in fan cover 10 inside completely and are fixed by screw with it.Blower tray 7 is fixed by screws on the radiator 602 of radiator 6, and the fan cover 10 then with fan and fan net supports and is fixed on this blower tray 7.
Light source 4 is fixed on the bottom surface 603 contrary with pedestal 601 of the pedestal 601 of radiator 6 by light source bracket 5, this bottom surface 603 is the plane of the bottom surface for COB light source of fitting, the two fully contact thus, both the contact area of light source 4 and radiator had been added, turn reduce the path that heat distributes conduction, the heat that thermal conductivity and the good thus light source 4 of thermal diffusivity are produced promptly is passed to radiator 6.By radiator 602 is arranged on the end face of pedestal 601 of radiator 6, fan is fixed on the free end of radiator 602, strengthen the forced convertion on air opposite heat sink surface, improve radiating efficiency, the heat being passed to radiator 6 by light source 4 is promptly taken away by air, ensure that heat is not piled up, at the normal temperature that radiator and COB light source are operated in.
Fig. 3 and Fig. 4 illustrates a preferred embodiment of radiator of the present utility model, and Fig. 3 is the front view of this radiator, and Fig. 4 is the top view of this radiator.
This radiator 6 comprises pedestal 601 and multiple radiator 602.Pedestal 601 is disc, and it has smooth end face and bottom surface.Radiator 602 is strip, arranges circlewise around central axis perpendicular to pedestal 601.In this embodiment, be provided with the radiator 602 of 4 circles around central axis, these radiators are spaced apart from each other in the circumferential, form air duct, and the quantity of each circle radiator reduces from outside to inside successively.Gap-forming air outlet 15 between the radiator of an outermost circle.
In this embodiment, radially first lap radiator 602 cross section in portion is rectangle, and at the radiating fin 605 being provided with two v shape arrangements on the side of central axis A of radiator, the opening of this v shape points to central axis A.The cross section of the second circle radiator 602 is star, and the cross section of the 3rd circle and the 4th circle radiator 602 is s shape.Also be provided with four columniform radiators 602, in this cylindrical heat-radiating body, be provided with the screwed hole for fan attachment support 7.
It is pointed out that the quantity of radiator 602 in the utility model, arrangement mode, shape of cross section are not limited to this embodiment, significant any amendment that these those skilled in the art can be made and combination.
According to the utility model, the bottom surface 603 of radiator 6 is plane, the direct large area in the bottom surface of the bottom surface of light source 4 and radiator 6 is made to fit and conduct heat, directly the heat produced during light source 4 luminescence is transmitted to radiator 602 by pedestal 601, decrease the path that heat distributes conduction, make thermal conductivity and thermal diffusivity good.By radiator 602 according to shape of cross section of the present utility model, arrangement mode, considerably increase area of dissipation, also provide the passage for air simultaneously, air fully can be contacted with radiator 602 and heated and discharge from air outlet swimmingly, heat is taken away.
According to the utility model, radiator 6 is preferably the cold forging radiator of aluminum.Radiator 6 adopts cold forging method manufacture and disposal molding, and therefore manufacture method is comparatively simple, be applicable to large-scale production, and cost is lower.Cold forging radiator is compared with traditional die casting aluminium or car aluminium radiator, and thermal conductivity factor is high, rapid heat dissipation.
According to the utility model, be arranged on the free end of radiator 602 by fan 8, and the sidewall 102 of fan cover 10 covers fan 8 in the axial direction completely, add the convection intensity of the relative radiator 602 of air, the heat being passed to radiator 6 by light source can be taken away by air in time rapidly, ensure to work under lower safe temperature according to COB track lamp of the present utility model.
Fig. 5 illustrates the fan cover of the second embodiment of the COB track lamp according to active heat removal of the present utility model.
Describe according to the second embodiment of the present utility model referring to Fig. 2 and Fig. 5.
As shown in Figure 2, light portion 100 comprises face ring 1, cover 2, reflector 3, light source 4, light source bracket 5, radiator 6, blower tray 7, fan 8, fan net 9 and fan cover 10.
The bottom of fan cover 10 is provided with air inlet 16 as shown in Figure 5.According to this second embodiment, the radius of the air inlet 16 suitably on design fan cover 10, and the size of air outlet 15 (see Fig. 4) on radiator 6, make the area sum of each air outlet 15 be greater than this air inlet 16.
By the area design of air outlet 15 being greater than the area of air inlet 16, to make in the space between the radiator 602 of radiator 6 and especially air outlet 15 place keeps certain negative pressure, thus air from wind inlet of fan through radiator to the circulation effect of air outlet and therefore radiating effect keep best.
Also preferably propose in this second embodiment, fan cover 10 not only holds fan net 9 and fan 8 completely, and the sidewall 102 of fan cover 10 extends beyond the end of radiator 602 in the axial direction, thus cover the end of radiator 602 in the circumferential, prevent air from directly flowing out from fan 8 or radiator 602 top thus, air can only be flowed out from the side of radiator 6 in the middle and lower part of radiator 602, add the path of flowing, improve heat dispersion, effectively make use of fan power.
All the other features of this second embodiment are with the first embodiment.
Below in conjunction with Fig. 1,2 and Fig. 6 illustrate according to the 3rd embodiment of the COB track lamp of the utility model active heat removal.
The COB track lamp of this active heat removal comprises lamp holder 120 and light portion 100, lamp holder 120 mainly comprises driving power for light source and outer cover of lamp holder, and light portion 100 comprises face ring 1, cover 2, reflector 3, light source 4, light source bracket 5, radiator 6, blower tray 7, fan 8, fan net 9 and fan cover 10.
Mainly describe the feature that the 3rd embodiment is different from the first embodiment and the second embodiment below, other same characteristic features is with reference to the first embodiment or the second embodiment.
According to this embodiment, the bottom surface 603 of radiator 6 is coated with last layer heat-conducting silicone grease 17, and light source 4 is bonded on the bottom surface 603 of radiator 6 by heat-conducting silicone grease 17.Heat-conducting silicone grease has high thermal conductivity, splendid thermal conductivity, wider serviceability temperature, good stability in use, lower denseness and good workability.According to the utility model, preferably thermal conductivity factor is used to be the High thermal-conductive silicone grease of 6.0.
By being coated with last layer heat-conducting silicone grease between light source 4 and the bottom surface 603 of radiator 6, the heat that light source 4 is produced is transmitted on radiator 6 quickly, reduces further the temperature of light source 4, ensures light efficiency stability, reduces light decay, extends COB track lamp service life.
Below in conjunction with Fig. 1,2 and Fig. 7 illustrate according to the 4th embodiment of the utility model COB track lamp.
The COB track lamp of this active heat removal comprises lamp holder 120 and light portion 100, lamp holder 120 mainly comprises driving power for light source and outer cover of lamp holder, and light portion 100 comprises face ring 1, cover 2, reflector 3, light source 4, light source bracket 5, radiator 6, blower tray 7, fan 8, fan net 9, fan cover 10 and temperature detect switch (TDS) 13.
According to this embodiment, arrange the temperature detect switch (TDS) 13 of connecting with light source 4, this temperature detect switch (TDS) 13 can be connected to the negative or positive electrode of light source 4.According to the utility model, light source 4 side on the bottom surface that this temperature detect switch (TDS) is fixed on radiator 6.
All the other features of 4th embodiment are with the first embodiment, the second embodiment or the 3rd embodiment.
In the utility model, by improving heat spreader structures, and use cold forging method to manufacture, fan is to the forced flow of radiator heat-dissipation face air, the air promoted by fan flows freely between cold section of radiator heat-dissipation body, and the heat that COB light source is produced passes in air fast.
By the air inlet of fan being designed less than the air outlet area on radiator, the flowing pressure of air in radiator is less than the pressure of wind inlet of fan, wind flow on radiator is faster, transmitting on links at heat always keeps input to be less than output, accelerate heat radiation further, ensure that heat is not piled up.
By using the heat-conducting silicone grease of high thermal conductivity coefficient between the substrate and cold forging radiator of COB light source, COB substrate is allowed to contact completely with cold forging radiator, utilize the heat high conductance of heat-conducting silicone grease, heat that COB light source produces is transmitted on cold section of radiator by substrate fast, fan makes radiator heat-dissipation face forced air flow move, and the heat that COB light source is produced passes in extraneous air fast.
By installing temperature switch device additional on a heat sink; even if make fan not work, the substrate of COB light source reaches 75 degree, COB light source input power meeting auto-breaking; duplicate protection ensures that COB light source in normal temperature work, Yin Wendu minimizing can not make its life-span reduce and strengthen light decay.
According to every improvement of the present utility model, more powerful product can be done by little structure, reduce materials'use, reduce material cost.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (10)
1. the COB track lamp of an active heat removal, comprise lamp holder and light portion, lamp holder comprises driving power and outer cover of lamp holder, light portion (100) comprises face ring (1), cover (2), reflector (3), light source (4), radiator (6) and fan (8), it is characterized in that:
Described radiator (6) has pedestal (601), the end face of this pedestal arranges radiator (602), described fan (8) is fixed on the free end deviating from this pedestal (601) of radiator (602), and described light source is fixed on the bottom surface (603) of pedestal (601).
2. COB track lamp according to claim 1, it is characterized in that, described pedestal (601) is disc, described radiator (602) is for multiple, each radiator (602) is strip, and the central axis (A) at interval around this pedestal (601) in described pedestal (601) circumference arranges.
3. COB track lamp according to claim 2, it is characterized in that, also comprise fan cover (10), described fan (8) is contained in described fan cover (10), the bottom (101) of this fan cover is provided with air inlet (16), the circular gap described pedestal (601) is positioned between radial outermost radiator (602) forms air outlet (15), wherein, the area sum of each air outlet (15) is greater than the area of this air inlet (16).
4. COB track lamp according to claim 3, is characterized in that, the sidewall (102) of described fan cover (10) covers the free end of described radiator (602) in the axial direction.
5. according to the COB track lamp one of Claims 1-4 Suo Shu, it is characterized in that, described radiator (602) comprises at least one radiating fin extended in the axial direction (605).
6. COB track lamp according to claim 5, is characterized in that, the quantity of described radiating fin (605) is two, and V-shaped arrangement, the V-arrangement opening that this radiating fin (605) is formed is towards central axis (A).
7. according to the COB track lamp one of Claims 1-4 Suo Shu, it is characterized in that, described radiator (6) is integrated shaping cold forging radiator, and the cross section of described radiator is that rectangle, trapezoidal, fan-shaped, star, s shape or breach are circular.
8. according to the COB track lamp one of Claims 1-4 Suo Shu, it is characterized in that, described light source (4) is bonded on the bottom surface (603) of radiator (6) by heat-conducting silicone grease (17).
9. according to the COB track lamp one of Claims 1-4 Suo Shu, it is characterized in that, the temperature detect switch (TDS) (13) of connecting with described light source (4) is set.
10. COB track lamp according to claim 9, is characterized in that, this temperature detect switch (TDS) (13) is fixed on the bottom surface (603) of radiator (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420665066.8U CN204127805U (en) | 2014-11-07 | 2014-11-07 | The COB track lamp of active heat removal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420665066.8U CN204127805U (en) | 2014-11-07 | 2014-11-07 | The COB track lamp of active heat removal |
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| Publication Number | Publication Date |
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| CN204127805U true CN204127805U (en) | 2015-01-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420665066.8U Expired - Fee Related CN204127805U (en) | 2014-11-07 | 2014-11-07 | The COB track lamp of active heat removal |
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| CN (1) | CN204127805U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018099860A1 (en) * | 2016-12-02 | 2018-06-07 | Philips Lighting Holding B.V. | Luminaire |
-
2014
- 2014-11-07 CN CN201420665066.8U patent/CN204127805U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018099860A1 (en) * | 2016-12-02 | 2018-06-07 | Philips Lighting Holding B.V. | Luminaire |
| US10883712B2 (en) | 2016-12-02 | 2021-01-05 | Signify Holding B.V. | Luminaire |
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Granted publication date: 20150128 Termination date: 20151107 |
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