CN101943381A

CN101943381A - LED heat radiation module

Info

Publication number: CN101943381A
Application number: CN2010102310108A
Authority: CN
Inventors: 周焕球
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-07-13
Filing date: 2010-07-13
Publication date: 2011-01-12
Anticipated expiration: 2030-07-13
Also published as: CN101943381B

Abstract

The invention discloses an LED heat radiation module, comprising of an LED light source module driven by an LED driver, and a heat radiation body connected with the LED light source module. The LED light source module is arranged in the center of the heat radiation body, and the heat radiation body consists of annular fins connected by a plurality of ribs. The LED light source module is connected on the ribs of the heat radiation body, the heat of the LED light source module is conducted to the annular fins through the ribs, and the heat of the annular fins is dissipated to the outside by the natural convection of air from bottom to top. Gaps are arranged between the annular fins of the heat radiation module, and the heat of the LED light source module can also be conducted to the annular fins on each layer through heat conduction grooves and heat conduction tubes, therefore the structure can greatly enhance the heat radiation effect of LED pendent lamp with the LED heat radiation module, meanwhile the structure of the heat radiation module has reduced weight and less production cost compared with the similar fin heat radiation structure, dust are rarely accumulated on the heat radiation fins arranged vertical the ground, and the heat radiation effect is enduring and efficient.

Description

A kind of LED radiating module

Technical field

The present invention relates to a kind of radiating module, particularly a kind of radiating module that is applied to the heat radiation of High Power LED Ceiling lamp set.

Background technology

LED (Light Emitting Diode, light emitting diode) have that volume is little, shock-resistant, life-span length, low power consumption, chemiluminescence and do not have advantages such as mercury pollution, it is widely used in indoor and outdoor places such as enterprises and institutions, hall, meeting room, workshop, shop, station, hospital, hotel, hotel, park, Entertainment Plaza and sub-district, street.

At present, the input power of high-power LED only has 15～20% to convert light to, all the other 80～85% forms that convert heat to discharge, if the not in good time discharge of these heat, will cause LED crystal grain to connect surface temperature too high and influence problems such as luminous efficiency and service life.

Existing high-power LED lamp radiator is the heat that LED produces directly to be conducted to by metal be provided with the heat sink of fin, but is subject to the metal fever conductivity, and it is heat sink, and effective district is less, and heat sink need are positioned at lamp source projecting direction.When by air heat being dissipated to the external world, improve the limited heat-sinking capability variation that makes in free convection zone with the LED heat in the free convection mode when heat sink.

Summary of the invention

Technical problem to be solved by this invention provides a kind of LED radiating module, the problem that present LED Ceiling lamp set radiating effect is poor to solve, unstable properties and service life are short.

For solving the problems of the technologies described above, the present invention realizes by the following technical solutions:

Design a kind of LED radiating module, comprise led light source module by led driver driving work, with the radiator that is connected with the led light source module, the led light source module is installed on the radiator center, described radiator is by being formed by the fixedly connected annular fin of some ribs, described led light source module is mounted on the rib of radiator, the heat that the led light source module is sent conducts in the annular fin by rib, and air dissipates to the external world with the free convection mode with the heat on the annular fin from bottom to top.

Improvement as such scheme, described annular fin comprises annular fin and following annular fin, all be provided with to be connected on going up annular fin and descending annular fin and use rib, have the groove that is used for heat conduction on the rib, upward the rib position correspondence on rib in the annular fin and the following annular fin makes the groove on the rib form thermal trough when last annular fin docks with down annular fin.

Be to strengthen heat-transfer effect, in thermal trough, be equipped with and be convenient to the heat pipe that heat that the led light source module sends conducts to annular fin.

The led light source module is installed on down in the installing hole default on the annular fin rib in the technique scheme, and heat pipe one termination that is arranged at thermal trough extends to the top of led light source module.

Led light source module among the present invention can also adopt following Installation Modes, and a soaking plate is set, and heat pipe one end connects on the soaking plate, and the other end is installed in the thermal trough, and the led light source module is installed on the lower surface of soaking plate.

For the ease of the die sinking manufacturing, technique scheme is done further improvement, above-mentioned upper and lower annular fin is spliced by fan-shaped fin respectively.For the spacing that is fit to every layer of annular fin that fin is connected with the cross-ventilation rib is advisable greater than 2mm.

The present invention has following remarkable result:

LED radiating module of the present invention dispels the heat by the annular fin that is connected with the led light source module is set, the heat that this radiating module structure sends the led light source module conducts in the annular fin by rib, and air dissipates to the external world with the free convection mode with the heat on the annular fin from bottom to top.Compared with prior art, be provided with spacing between the present invention's annular fin, and the heat that the led light source module is sent can also conduct to every layer of annular fin by thermal trough and heat pipe, this version can significantly improve heat radiation effectively district and fin free convection usefulness, improves and adopts LED radiating module LED Ceiling lamp set heat dissipation; This radiating module structure is compared similar fin radiator structure weight reduction simultaneously, cost reduces, and the radiating fin of this vertical ground setting also is difficult for dust stratification dirt, the radiating effect persistent high efficiency.

Description of drawings

Accompanying drawing 1 is looked up structural representation for the embodiment of the invention one;

Accompanying drawing 2 is embodiment one a decomposition texture schematic diagram;

Accompanying drawing 3 is embodiment one a front sectional structure schematic diagram;

Accompanying drawing 4 is embodiment one installing hole another distributed architecture schematic diagram in following annular fin;

Accompanying drawing 5 is the annular one by one fin of an embodiment cross section partial structurtes schematic diagram;

Accompanying drawing 6 is embodiment one another annular fin cross section partial structurtes schematic diagram;

Accompanying drawing 7 is an embodiment annular fin cross section partial structurtes schematic diagram again and again;

Accompanying drawing 8 is another plan structure schematic diagram of embodiment one annular fin;

Accompanying drawing 9 is the embodiment of the invention two decomposition texture schematic diagrames;

Accompanying drawing 10 is the embodiment of the invention two front sectional structure schematic diagrames.

The specific embodiment

For the ease of those skilled in the art's understanding, structural principle of the present invention is further described in detail below in conjunction with specific embodiment and accompanying drawing:

Embodiment one:

Shown in accompanying drawing 1～3, present embodiment disclosed is a kind of LED radiating module of in light weight, good heat dissipation effect.Described radiating module comprises the led light source module 2 and the radiator that is connected with led light source module 2 by led driver driving work, led light source module 2 is installed on the radiator center, described radiator is by being formed by some rib 3 fixedly connected annular fins 4, led light source module 2 is mounted on the rib 3 of radiator, the heat that led light source module 2 is sent conducts in the annular fin 4 by rib 3, and air dissipates to the external world with the free convection mode with the heat on the annular fin 4 from bottom to top.

The annular fin 4 of above-mentioned radiator comprises annular fin 41, following annular fin 42, and upper and lower

annular fin

41,42 is mutually permanently connected by fixture, is respectively equipped with some ribs 3 on upper and lower annular fin 41,42.Annular fin 4 is made by high heat-conducting such as copper, aluminium etc., can form by some fan-shaped fin splicings for ease of processing upper and lower

annular fin

41,42, every fan-shaped fin middle part is provided with a rib 3, have the groove that is used for heat conduction on the rib 3, the rib 3 and the rib 3 position correspondences on the following annular fin 42 that go up in the annular fin 41 make the groove on the rib 3 form thermal trough 5.Have the installing hole 21 that is used to install led light source module 2 on fin 42 ribs 3 that go in ring down, installing hole 21 can be arranged on the end that rib 3 extends to round center, referring to Fig. 2.In order to strengthen radiating effect, heat pipe 6 can be installed in rib 3 thermal troughs 5, heat pipe 6 can be the Heat Conduction Material of being made by copper or aluminium, be provided with the tubing of conductive fluid in also can be, heat pipe 6 can conduct the heat that led light source module in the installing hole 21 2 produces rapidly, and apace heat is dissipated to the external world by the free convection of annular fin 4 and air.

In the practical application, if the power of led light source module 2 is little, it is less demanding to dispel the heat, then can open the installing hole 21 of above-mentioned installation led light source module 2 in the centre position of following annular fin 42 ribs 3, as shown in Figure 4, need to get final product and go up 41 of annular fins, and no longer need to install heat pipe 6, only utilize the fin of both sides and cross-ventilation heat radiation to get final product with reference to down annular fin 42 settings.

The LED radiating module that this programme disclosed also comprises a fixed head 1, and fixed head 1 further is connected and fixed upper and lower

annular fin

41,42, and can install and fix led driver, and led driver guarantees the uniformity and the constancy of led light source module 2 electric currents output.

In this programme, as described in accompanying drawing 5, above-mentioned annular fin 4 can be combined by independent ring slice, and the spacing between each layer fin annular fin 4 is greater than 2mm, and the thickness of every layer of annular fin 4 is with highly identical.Above-mentioned annular fin 4 can also be other shape, as shown in Figure 8.Because annular fin 4 distribution distances between the outer ring heat pipe 6 are big more more, can be with the thickness of annular fin 4 attenuate gradually from inside to outside, as shown in Figure 6; Or the height of annular fin 4 lowered from inside to outside gradually, as shown in Figure 7, thereby improve the radiating efficiency of annular fin 4, in time reduced the operating temperature of light fixture, guarantee the service behaviour of light fixture.

LED radiating module provided by the invention is particularly suitable for the LED Ceiling lamp set.When the LED Ceiling lamp set is worked, led light source module 2 constantly gives out heat, especially high-capacity LED Ceiling lamp set, produce a large amount of heats, after heat is passed to heat pipe 6, be provided with conductive fluid in the heat pipe 6, heat pipe 6 inner conductive fluid heat absorptions are evaporated the back condensation heat in heat pipe 6 condensation part inner surfaces, heat is passed to heat pipe 6 outer surfaces more then, the condensed fluid of heat pipe 6 inside is got back to heating end by capillary structure, continue circulation, heat pipe 6 reaches annular fin 4 with heat when transmitting the heat process simultaneously.Because radiating module of the present invention is arranged on the LED Ceiling lamp set, and the radiating fin 4 of annular is the vertical ground setting, annular fin 41 dissipates to the external world in the free convection mode with heat to make air up flow through upward by following annular fin 42, annular fin 4 is arranged with suitable distance (for example spacing is 2mm) from inside to outside, cold air can from bottom to top pass fin and take away heat, thereby improve the heat area of dissipation greatly, accelerating heat distributes, can reduce the operating temperature of light fixture in a large number, guarantee the service behaviour of light fixture, prolong the service life of light fixture.

Embodiment two:

Shown in accompanying drawing 9～10, structure proximate among LED radiating module that present embodiment disclosed and the embodiment one, difference is that heat pipe 6 one ends connect on the soaking plate 7, the other end is installed in the thermal trough 5, led light source module 2 is installed on the lower surface of soaking plate 7, and led driver is installed on the soaking plate 7 and covers with fixed head 1.

In the present embodiment after heat that led light source module 2 work is produced is passed to soaking plate 7, heat conducts to heat pipe 6 from soaking plate 7, heat pipe 6 inner conductive fluid heat absorptions are evaporated the back condensation heat in heat pipe 6 condensation part inner surfaces, heat conducts to heat pipe 6 outer surfaces again, and the condensed fluid of heat pipe 6 inside is got back to heating end by capillary structure, continue circulation, according to this heat is reached annular fin 4, air is up flowed through upward by following annular fin 42, and annular fin 41 dissipates to the external world in the free convection mode with heat, annular fin 4 is arranged with suitable distance from inside to outside, cold air can from bottom to top pass fin and take away heat, thereby improve the heat area of dissipation greatly, accelerate heat and distribute, can reduce the operating temperature of light fixture in a large number, guarantee the service behaviour of light fixture, prolong the service life of light fixture.

In addition, led driver is installed on the soaking plate 7, and the heat that led driver distributes also can be passed to heat pipe 6 condensation parts by the portion of being heated on the soaking plate 7, and heat is sentenced the natural convection air mode at annular fin 4 heat is dissipated then.

More than be the preferable implementation of the present invention; in addition; the present invention that coexists conceives the implementation that has other down; need to prove; the preferred version that the foregoing description is only realized for the present invention; and non-limiting exhaustive, without departing from the inventive concept of the premise, any conspicuous replacement is all within protection domain of the present invention.

Claims

1. LED radiating module, comprise led light source module (2) by led driver driving work, with the radiator that is connected with the led light source module, it is characterized in that: the led light source module is installed on the radiator center, described radiator is by being formed by the fixedly connected annular fin (4) of some ribs (3), described led light source module is mounted on the rib of radiator, the heat that the led light source module is sent conducts in the annular fin by rib, and air dissipates to the external world with the free convection mode with the heat on the annular fin from bottom to top.

2. LED radiating module according to claim 1, it is characterized in that: annular fin comprises annular fin (41) and following annular fin (42), all be provided with to be connected on going up annular fin and descending annular fin and use rib, have the groove that is used for heat conduction on the rib, upward the rib position correspondence on rib in the annular fin and the following annular fin makes the groove on the rib form thermal trough (5) when last annular fin docks with down annular fin.

3. LED radiating module according to claim 2 is characterized in that: be equipped with in the described thermal trough and be convenient to the heat pipe (6) that heat that the led light source module sends conducts to annular fin.

4. LED radiating module according to claim 3 is characterized in that: described led light source module is installed on down in the installing hole (21) default on the annular fin rib, and heat pipe one termination that is arranged at thermal trough extends to the top of led light source module.

5. LED radiating module according to claim 3 is characterized in that: described heat pipe one end connects on the soaking plate (7), and the other end is installed in the thermal trough, and the led light source module is installed on the lower surface of soaking plate.

6. according to each described LED radiating module of claim 1～5, it is characterized in that: described upper and lower annular fin is spliced by fan-shaped fin respectively.

7. LED radiating module according to claim 6 is characterized in that: the spacing of every layer of annular fin that described rib connects is greater than 2mm.