CN202868629U - Light-emitting diode (LED) lamp and heat radiator thereof - Google Patents
Light-emitting diode (LED) lamp and heat radiator thereof Download PDFInfo
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- CN202868629U CN202868629U CN2012205017518U CN201220501751U CN202868629U CN 202868629 U CN202868629 U CN 202868629U CN 2012205017518 U CN2012205017518 U CN 2012205017518U CN 201220501751 U CN201220501751 U CN 201220501751U CN 202868629 U CN202868629 U CN 202868629U
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Abstract
The utility model discloses a light-emitting diode (LED) lamp and a heat radiator of the LED lamp. The LED lamp comprises the heat radiator and an LED module. The heat radiator comprises connection pieces and a plurality of cooling fins which are shaped in a stamping mode, wherein the plurality of cooling fins are evenly arranged on the periphery of the connection pieces in a radial mode. Each cooling fin comprises a cooling part and a positioning part. The connection pieces are plastic pieces made of high temperature resistant materials and are of a hollow column shape, and positioning grooves are arranged in circumference surfaces of the connection pieces along the axial direction. The cooling fins are shaped in the stamping mode, and the thickness of the cooling fins can be greatly reduced. The number of the cooling fins which can be assembled on each connection piece can reach over 60, and thereby the cooling surface area is enlarged and the cooling efficiency is improved. The connection pieces are the plastic pieces made of the high temperature resistant materials, and connection of the cooling fins and the connection pieces is enabled to be firm, reliable and free from being strengthened again in a later stage. Simultaneously, the connection pieces are not beneficial to heat conduction, heat is prevented from having an impact on components inside the connection pieces, and therefore the LED lamp is guaranteed to work normally.
Description
Technical field
The utility model belongs to field of illuminating device, relates in particular to a kind of LED light fixture and radiator thereof.
Background technology
The LED light fixture is applied in the life more and more widely, one of advantage of LED is to have very high photoelectric transformation efficiency, compare with conventional light source and to have greatly improved, but owing to being subjected to the restriction of up till now technical development, efficient probably still only has 15-20%, this means that nearly the electric energy of 80-85% has still converted heat to.Therefore, heat dissipation problem is the significant challenge that the LED illumination faces always.The LED light fixture relies on its radiator to dispel the heat.The production technology of LED radiator of the prior art mainly contains three kinds.
The first is section bar Vehicle Processing technique, uses the aluminium alloy machine-shaping of easy turning, and is follow-up through anode processing burr and outer surface processing processing.This explained hereafter efficient is low, uses consumable quantity large, needs post-processed, and the fin thickness requirement of this technique is more than 1.5mm, otherwise is unfavorable for cutting, and the radiator of producing has 30 ~ 40 pages of fin, and cooling surface area is little, and radiating effect is not good.
The second is the LED fin type, dispels the heat to be the punch process aluminium flake.Aluminium flake connects into bar shaped in punching course.Through follow-up pressing and forming or adhesion-molded with glue.Its shortcoming is that the processing method efficient that punch process is in strip is low; Follow-up pressing and forming or when being stained with synthesis type with glue adopts artificial, and process efficient is low; Use 50 pages of fin, the little unfavorable heat transfer of cooling surface area.
The third is the LED injection-compression molding: radiating piece with the aluminium alloy melting after pressure injection enter in the mould LED radiating piece that forms through lathe processing and surface treatment again.Its shortcoming is, aluminium alloy needs first melting, and the materials'use amount is large; Blank also needs the lathe finished surface to process behind the mould molding, and volume is excessive, and the heat transfer interface material thickness is unfavorable heat transfer more than 1.5mm.
The utility model content
The purpose of this utility model is to provide LED light fixture and the radiator thereof that a kind of radiating efficiency is high, production efficiency is high.
In order to solve the problems of the technologies described above, the utility model provides a kind of radiator for the LED lamp, comprises connector and a plurality of stamping forming fin, a plurality of described fin be radial evenly be arranged in described connector around;
Described fin comprises radiating part and location division, and described location division is extended towards described connector by described radiating part; Described connector is the plastic parts of exotic material, is the column of hollow, is provided with vertically the locating slot that matches with described location division on its side face, and described locating slot is a plurality of; Described location division is fixed in the described locating slot and the two is corresponding one by one.
Wherein, described location division is provided with towards the screens section of adjacent fin bending, and described screens section is bar shaped and along the axial setting of described connector; Offer the screens groove that matches with described screens section on the cell wall of described locating slot, described locating slot and described screens groove all be communicated to described connector shaft to the first end end face.
Wherein, described fin comprises first end and the second end that is oppositely arranged, its first end is bent to form kink, the shape of described kink matches with the gap between adjacent two described fin, the kink of a plurality of described fin at grade, the first end of described fin and the first end of described connector are connected; The second end of described fin is flat.
Wherein, the second end outer ledge of relative its axial first end of described connector extends to form the resettlement section of tubulose vertically, and the second end of described fin also extends to the end of described resettlement section.
Wherein, offer a plurality of air vents on the described radiating part.
Wherein, the thickness of described fin is 0.2mm ~ 0.4mm, and the number of described fin is more than or equal to 60.
Wherein, described fin adopts the punch forming of high heat conduction sheet material, and described high heat conduction sheet material comprises the steel plate layer and electroplates heat dissipating layer at described steel plate layer double-sided surface.
Correspondingly, the utility model also provides a kind of LED light fixture, comprises the above-mentioned radiator that is used for the LED lamp and the LED module that is fixedly connected with described radiator.
In the utility model, the fin punch forming can reduce the thickness of fin greatly, improves assembling fin quantity on each connector, thereby increases cooling surface area, improves radiating efficiency; Connector is the plastic parts of exotic material, so that fin and connector firm and reliable connection, need not the later stage again to reinforce, and connector is unfavorable for heat conduction simultaneously, avoids heat that the element in it is impacted, and guarantees the normal operation of LED light fixture.Fin and connector are connected by location division and locating slot, are convenient to assembling, can enhance productivity.
Description of drawings
In order to be illustrated more clearly in the technical solution of the utility model, the below will do to introduce simply to the accompanying drawing of required use in the embodiment, apparently, accompanying drawing in the following describes only is embodiments more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the structural representation of the LED light fixture that provides of the utility model preferred embodiment;
Fig. 2 is the profile along II-II of LED light fixture among Fig. 1;
Fig. 3 is the schematic diagram of the radiator that provides of the utility model preferred embodiment;
Fig. 4 is the decomposing schematic representation of radiator among Fig. 3;
Fig. 5, Fig. 6 are the schematic diagrames of the connector different angles of radiator among Fig. 4;
Fig. 7 is the profile of the high heat conduction sheet material that provides of the utility model preferred embodiment.
The specific embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described.
See also Fig. 1 and Fig. 2, a kind of LED light fixture that the utility model embodiment provides comprises radiator and is fixedly connected with LED module 6 with radiator.Further, described LED light fixture also further comprises the shell 3 that is set in the radiator outside, is arranged on the lampshade 4 of shell 3 first ends and is arranged on the holder 5 of shell 3 second ends.Its housing 3 utilizes shell 3 can effectively reduce LED lamp surface temperature for injection moulding batch profiled member, avoids the hand of burning in the cargo handling process.In use, the first end of shell 3 down, the second end is up.
As shown in Figure 3, Figure 4, radiator comprises connector 1 and a plurality of stamping forming fin 2, a plurality of fin 2 be radial evenly be arranged in connector 1 around.Fin 2 comprises radiating part 21 and location division 22, and location division 22 is extended towards connector 1 by radiating part 21; Connector 1 is the plastic parts of exotic material, is the column of hollow, is provided with vertically the locating slot 11 that matches with location division 22 on its side face, and locating slot 11 is a plurality of; Location division 22 is fixed in the locating slot 11 and the two is corresponding one by one.Preferably, location division 22 and locating slot 11 interference fit, can be further so that fin 2 and connector 1 be connected firmly.
Extremely shown in Figure 6 such as Fig. 4, location division 22 is provided with towards the screens section 24 of adjacent fin 2 bendings, screens section 24 is bar shaped and along the axial setting of connector 1, offer the screens groove 12 that matches with screens section 24 on the cell wall of locating slot 11, utilize the firm and reliable connection that can make screens groove 12 and cooperating of screens section 24 fin 2 and connector 1.Locating slot 11 and screens groove 12 all are communicated to the axial first end end face of connector 1, so that fin 2 can be inserted into the locating slot 11 from the first end of connector 1 location division 22 with fin 2.Screens section 24 also forms for punching press, and simultaneously screens groove 12 is near the side of connector 1, to increase as far as possible the degree of depth of screens groove 12.Utilize the cooperation of screens section 24 and screens groove 12 can limit locating slot 11 is upwards inserted in location division 22 in connector 1 footpath distance, after a plurality of fin 2 and connector 1 are assembled, the outer ledge of a plurality of fin 2 is positioned on the same circumference, and good looking appearance is beneficial to the later stage further to process.
As shown in Figure 4, the first end of fin 2 is bent to form kink 23, the shape of kink 23 matches with the gap between adjacent two fin 2, the kink 23 of a plurality of fin 2 at grade, thereby absorb the heat that LED module 6 produces so that be connected with LED module 6.Kink 23 directly is connected with LED module 6, and the heat that kink 23 absorbs can directly be passed to radiating part 21 and dispel the heat, and improves radiating efficiency.The shape of kink 23 matches with the gap between adjacent two fin 2, can increase to greatest extent the contact area with LED module 6.Location division 22 all has been bent to form kink 23 with the end of radiating part 21, not only increase the contact area with LED module 6, and, the first end of the first end of fin 2 and connector 1 is connected, kink 23 gears are positioned at the edge of connector 1 first end at locating slot 11, can limit fin 2 in the connector 1 axial distance that embeds in the locating slot 11, so that behind fin 2 and connector 1 assembly connection, the first end of each fin 2 is concordant, and kink 23 is in the same plane.
The second end of fin 2 is flat.In the use procedure of LED light fixture, the first end of fin 2 down, the second end up, correspondingly, the first end of connector 1 down, the second end is up.The first end of fin 2 is flat, and the thermal current that makes kink 23 absorb heat formation can flow out from the LED light fixture smoothly by the top of radiator, is convenient to heat to the diffusion in the external world.
Offer a plurality of air vents 20 on the radiating part 21, so that the Air Flow in the radiator strengthens heat dispersion.
The thickness of fin 2 is 0.2mm ~ 0.4mm, and more fin 2 can be set in identical space, improves fin 2 numbers that are arranged at a connection piece 1, can guarantee the structural strength of fin 2 simultaneously.Certainly the thickness of fin 2 is not limited to this.The number of fin 2 is more than or equal to 60, improves the cooling surface area of radiator, improves rate of heat dissipation.
In the present embodiment, it is high heat conduction sheet material 200 punch formings of 0.3mm that fin 2 adopts thickness, reduces fin 2 thickness, makes its thickness can be reduced to 0.5mm and following.Herein, high heat conduction sheet material 200 refers to that thermal conductivity factor is greater than 200k(W/(MK)) sheet material.Particularly, as shown in Figure 7, described high heat conduction sheet material 200 comprises steel plate layer 201 and electroplates heat dissipating layer 202 at described steel plate layer 201 double-sided surface.The inner core of high heat conduction sheet material 200 is steel plate layer 201, and structural strength is high, can adopt less thickness to reach higher structural strength; Because the main outer surface that relies on of heat radiation dispels the heat, therefore mainly rely on heat dissipating layer 202 to dispel the heat; The thermal conductivity factor of copper is high, and the skin of high heat conduction sheet material 200 is heat dissipating layer 202, and the material of heat dissipating layer 202 adoptable high thermal conductivity improves bulk thermal conductivity.In the present embodiment, heat dissipating layer 202 is copper plate, and the thermal conductivity factor of copper is 401K W/ (mK), and heat transfer efficiency is high.If radiator is used for the high-power LED light fixture, in order to improve radiating efficiency, heat dissipating layer 202 can adopt thermal conductivity factor to reach the silver coating of 429KW/ (mK), perhaps adopts the material of other high thermal conductivity coefficients.Heat dissipating layer 202 is electroplated at steel plate layer 201 double-sided surface, and the two is in conjunction with tight.Certainly, herein high heat conduction sheet material 200 also can be aluminium panels or aluminum alloy plate materials etc.
As shown in Figure 3, Figure 4, the second end outer ledge of connector 1 relative its axial first end extends to form the resettlement section 13 of tubulose vertically, so that the element such as drive unit of LED module 6 is set and makes it and fin 2 isolation, avoids heat energy that it is affected.The second end of fin 2 also extends to the end of resettlement section 13, is beneficial to resettlement section 13 heat diffusion on every side.
The fin 2 of the employing of the radiator that the utility model provides more than 60, integral heat sink area are existing more than 1.5 times of LED product, and radiating efficiency is high.The hull-skin temperature that adopts whole LED light fixture is about 40 degree in working order, does not have the sensation of the hand that burns in workman's cargo handling process.
Correspondingly, the utility model also provides the processing method of above-mentioned radiator, may further comprise the steps: the fin 2 of making described radiator by continuous punching sheet material; Adopt the connector 1 of the described radiator of exotic material injection mo(u)lding; With a plurality of described fin 2 and described connector 1 assembly connection, the location division 22 of described fin 2 is embedded in the locating slot 11 of described connector 1 one by one.
Make the fin 2 of radiator by continuous punching heat conduction sheet material, production efficiency is high, can greatly reduce the thickness of fin 2, and its thickness can be reduced to 0.5mm and following, improves assembling fin 2 quantity on each connector 1; As preferably, fin 2 is made for the high-speed and continuous punching press, and it rushes speed is more than 300 times/minutes, uses material few, further enhances productivity.Sheet material herein is above-mentioned high heat conduction sheet material 200, and its structure does not repeat them here.
Adopt the connector 1 of high temperature resistant plastic material injection mo(u)lding radiator, further, adopt the mode injection mo(u)lding connector 1 of multi-point mould, consumptive material is few, and efficient is high.Connector 1 adopts high temperature resistant plastic material, has certain effect of heat insulation, can reduce the heat of fin 2 to the impact of the electrical part in the connector 1.
The location division 22 of fin 2 is embedded in the locating slot 11 of connector 1.The firm and reliable connection that fin 2 and connector are 1, and need not the later stage consolidation process.
The respective outer side edges of connector 1 and fin 2 is so that the assembling between the two can be adopted the automation assembling, for example, utilize the stepping rotating mechanism to drive connector 1 stepping rotation, clamping device is with fin 2 clampings and utilize delivery device that the location division 22 of fin 2 is inserted in the locating slot 11, and adopt single-chip microcomputer dispatch control system control said mechanism to move, assembling process can realize automation, and the amount of labour used is little, and efficiency of assembling is high.
The above is preferred embodiment of the present utility model; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the utility model principle; can also make some improvements and modifications, these improvements and modifications also are considered as protection domain of the present utility model.
Claims (8)
1. a radiator that is used for the LED lamp is characterized in that, comprises connector and a plurality of stamping forming fin, a plurality of described fin be radial evenly be arranged in described connector around;
Described fin comprises radiating part and location division, and described location division is extended towards described connector by described radiating part; Described connector is the plastic parts of exotic material, is the column of hollow, is provided with vertically the locating slot that matches with described location division on its side face, and described locating slot is a plurality of; Described location division is fixed in the described locating slot and the two is corresponding one by one.
2. the radiator for the LED lamp according to claim 1 is characterized in that, described location division is provided with towards the screens section of adjacent fin bending, and described screens section is bar shaped and along the axial setting of described connector; Offer the screens groove that matches with described screens section on the cell wall of described locating slot, described locating slot and described screens groove all be communicated to described connector shaft to the first end end face.
3. the radiator for the LED lamp according to claim 2, it is characterized in that, described fin comprises first end and the second end that is oppositely arranged, its first end is bent to form kink, the shape of described kink matches with the gap between adjacent two described fin, the kink of a plurality of described fin at grade, the first end of described fin and the first end of described connector are connected; The second end of described fin is flat.
4. the radiator for the LED lamp according to claim 3, it is characterized in that, the second end outer ledge of relative its axial first end of described connector extends to form the resettlement section of tubulose vertically, and the second end of described fin also extends to the end of described resettlement section.
5. the radiator for the LED lamp according to claim 1 is characterized in that, offers a plurality of air vents on the described radiating part.
6. the radiator for the LED lamp according to claim 1 is characterized in that, the thickness of described fin is 0.2mm ~ 0.4mm, and the number of described fin is more than or equal to 60.
7. the radiator for the LED lamp according to claim 1 is characterized in that, described fin adopts the punch forming of high heat conduction sheet material, and described high heat conduction sheet material comprises the steel plate layer and electroplates heat dissipating layer at described steel plate layer double-sided surface.
8. a LED light fixture is characterized in that, each is described for the radiator of LED lamp and the LED module that is fixedly connected with described radiator to comprise claim 1-7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012205017518U CN202868629U (en) | 2012-09-28 | 2012-09-28 | Light-emitting diode (LED) lamp and heat radiator thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012205017518U CN202868629U (en) | 2012-09-28 | 2012-09-28 | Light-emitting diode (LED) lamp and heat radiator thereof |
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| Publication Number | Publication Date |
|---|---|
| CN202868629U true CN202868629U (en) | 2013-04-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012205017518U Expired - Fee Related CN202868629U (en) | 2012-09-28 | 2012-09-28 | Light-emitting diode (LED) lamp and heat radiator thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102913876A (en) * | 2012-09-28 | 2013-02-06 | 深圳市慧盈通机电有限公司 | LED (light emitting diode) lamp, heat radiator used for LED lamp and machining process of heat radiator |
-
2012
- 2012-09-28 CN CN2012205017518U patent/CN202868629U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102913876A (en) * | 2012-09-28 | 2013-02-06 | 深圳市慧盈通机电有限公司 | LED (light emitting diode) lamp, heat radiator used for LED lamp and machining process of heat radiator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130410 Termination date: 20150928 |
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| EXPY | Termination of patent right or utility model |