CN203810346U

CN203810346U - LED heat dissipation device

Info

Publication number: CN203810346U
Application number: CN201420175470.7U
Authority: CN
Inventors: 吴为生
Original assignee: Individual
Current assignee: Individual
Priority date: 2014-04-14
Filing date: 2014-04-14
Publication date: 2014-09-03
Anticipated expiration: 2024-04-14

Abstract

The utility model discloses an LED heat dissipation device. The LED heat dissipation device is characterized in that a plurality of holes surround each part, provided with an LED, of an aluminum alloy heat dissipation plate, the upper opening of each hole extends to form a ventilation pipe according to the corresponding shape, and the LED heat dissipation device is formed by arranging the holes surrounding the LEDs and the ventilation pipes. The ventilation pipes on the aluminum alloy heat dissipation plate replace cooling fins on an existing heat dissipation device, unobstructed passageways are arranged around the ventilation pipes in all directions, and therefore the circulating performance is good; meanwhile, hot air and cold air convection passageways are formed on the upper face and the lower face of the heat dissipation device due to the holes, heat produced by the LEDs is transmitted to an aluminum alloy plate and the ventilation pipes and then forms conduction convection together with air to be dissipated outwards, and therefore the heat dissipation performance is good, the LEDs can normally work within the permitted temperature range, and the service life of the LEDs is prolonged.

Description

A kind of LED radiator

Technical field

The utility model relates to a kind of illuminating LED heat abstractor.

Background technology

Be converted to heat energy because LED has very large a part of electric energy in the time sending luminous energy, need to carry out radiating treatment with radiator, just can make LED reduce cause thermal damage and reduce light decay, therefore, effectively heat abstractor is most important to the working life of LED.The radiator of existing LED is all to adopt foliated aluminium radiator, its structure is generally on aluminum alloy bottom plate and erects multi-disc aluminium radiator fin by certain arrangement mode, the shortcoming existing be in the time that radiator area is larger fin and lamp body space outerpace heat loss through conduction circulation unobstructed not, affect radiating effect.

Summary of the invention

Have fin and the unobstructed not problem that affects radiating effect of the surrounding air heat-conducting flow general character in order to solve existing LED radiator, the utility model timely after providing a kind of heat that LED can be produced to be transmitted on radiator and air is provided and circulate and is dispersed into the LED radiator of lamp body space outerpace.

The technical solution adopted in the utility model is: on an aluminium alloy heat sink, the perforate that has more than four diameter to be greater than five millimeters around the position of each LED is installed to be surrounded, each perforate is suitable for reading, and to extend a height by respective shapes be the breather pipe between five millimeters to 30 millimeters, and the distance between adjacent two breather pipes is greater than three millimeters; On aluminium alloy heat sink, arranging and forming the utility model LED radiator by organize the perforate of the above-described LED of surrounding and breather pipe more.The shape of perforate can be designed to circular and various polygons, the height of breather pipe is depending on LED power, the general larger breather pipe of power can be high a little, or suitably increase breather pipe number, and opening diameter is greater than distance between five millimeters and breather pipe and keeps three millimeters to be conducive to above hot-air circulation.And each LED divides and open separately one group and carry out heat conduction and heat radiation and can improve radiating effect, guarantee that each LED works under lower temperature.

The beneficial effects of the utility model are: the breather pipe on aluminium alloy heat sink has replaced the fin on existing radiator, the large radiating surface of breather pipe inside and outside wall surface area is also large, around four-way has unobstructed heat dissipation channel, circulation of air performance is strong, and perforate makes radiator top and bottom form hot cold air convection passage, after the heat that LED produces is transmitted on aluminium alloy heat sink and breather pipe, can be in time form and conduct convection current and to outside space divergence with air, heat dispersion is superior, can extend the working life of LED.Meanwhile, the shape of perforate can be varied, during as exposed conveying appliance radiator, can design novel and beautiful appearance, the superior light fixture of heat dispersion for LED lamps such as ceiling lights.

Brief description of the drawings

Below in conjunction with drawings and Examples, the utility model is further illustrated.

Fig. 1 is the LED radiator bottom surface structure upward view of first embodiment of the utility model.

Fig. 2 is that LED radiator end face structure is overlooked design sketch.

Fig. 3 is that LED radiator is got wherein fraction and carried out the structure front view after cross section.

Fig. 4 is that radiator dress pastes the structure chart after a wiring board and LED, the part cross-sectional configurations figure that Fig. 5 is it.

Fig. 6 is the LED radiator bottom surface structure upward view of second embodiment of the utility model, the part cross-sectional configurations figure that Fig. 7 is it.

Detailed description of the invention

The LED radiator of first embodiment of the utility model as shown in Figure 1, on a square aluminium alloy heat sink 1, arrange the installation position 13 of nine great power LEDs, as shown in square dotted line frame in figure, the round hole 11 of ten millimeters of eight diameters of making a circle for 13 weeks in each installation position is square and surrounds.Its end face structure is overlooked effect as shown in Figure 2, and each round hole 11 is suitable for reading extends columnar breather pipe 12.Can clearlyer find out the LED heat spreader structures principle in the present embodiment by the cross-sectional configurations figure of Fig. 3, wherein each columnar breather pipe 12 height are less than one centimetre, cylinder has larger inside and outside wall surface area radiating surface also just large, the heat that LED produces is transmitted on aluminium alloy heat sink 1 and breather pipe 12, by their top layer and the abundant thermal contact conductance of air, make aluminium alloy heat sink 1 lower temperature air below flow into end face by round hole 11 again, and the thermal current of end face flows to lamp body space outerpace from the spacious passage between breather pipe 12, constantly convection current forms heat dissipation environment.Example shown in Fig. 4 is that LED radiator is installed the structure chart after lastblock wiring board and LED, wherein wiring board 2 covers to fill and is attached to below aluminium alloy heat sink 1, each LED3 correspondence is arranged on LED installation position 13, wiring board 2 is equally also outputed corresponding circular hole 21 corresponding to round hole capped on aluminium alloy heat sink 1 11 positions, makes it to communicate with round hole 11.Cross-sectional configurations diagram by Fig. 5 can further be found out the structure between LED radiator and wiring board 2 and LED3.

Second embodiment applies to LED radiator of the present utility model on a ceiling light.As shown in Figure 6, on a square aluminum alloy heat sink 1, the surrounding of each one watt of great power LED 3 have six hexagonal perforates 11 round, one has 16 groups of such LED ceiling lights that constitute 16 watts.Fig. 7 is that this radiator is got wherein one group of structural map of analysing and observe as cross section, and the installation position of LED3 is a square pit, and wiring board 2 is attached to bottom, LED3 is installed below, and fills therein transparent silica gel 4 as protective layer.The devices such as this LED radiator and LED directly form a brief ceiling light, without lampshade and outer frame member, and perfect heat-dissipating, the cost of material is low for good looking appearance and saving.

Claims

1. a LED radiator, it is characterized in that: on an aluminium alloy heat sink (1), the perforate (11) that has more than four diameter to be greater than five millimeters around the position of each LED (3) is installed to be surrounded, each perforate (11) is suitable for reading, and to extend a height by respective shapes be the breather pipe (12) between five millimeters to 30 millimeters, distance between adjacent two breather pipes (12) is greater than three millimeters, and has perforate (11) and the breather pipe (12) of the above-mentioned LED of surrounding of many groups (3) to be arranged on aluminium alloy heat sink (1).