CN102095171A

CN102095171A - Heat dissipation structure of LED lamp

Info

Publication number: CN102095171A
Application number: CN2009102540588A
Authority: CN
Inventors: 郭烱程
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-12-15
Filing date: 2009-12-15
Publication date: 2011-06-15

Abstract

A heat dissipation structure for an LED lamp mainly comprises a lamp housing body having at least one enclosed space, which makes it waterproof and dustproof. A plurality of LED crystal grains and an electronic controller are arranged in the enclosed space, so that it provides a light source for illumination. In particular, a hollow air duct is arranged in the enclosed space of the lamp housing body, which can absorb and disperse the temperature in the enclosed space, and utilizes the principle of rising hot air to discharge the high temperature in the lamp housing body to the outside through the air duct, thereby providing a good heat dissipation effect for the lamp.

Description

The LED lamp cooling structure

Technical field

The present invention relates to a kind of LED lamp cooling structure, be meant especially outside a kind of intrinsic thermal source of lamp housing can the discharge by air flue, and then improve the light fixture heat radiation or the auxiliary-radiating structure in service life.

Background technology

Press, owing to rising violently of energy cost, energy-conservation notion and commodity have been scurried rapidly, and LED (light emitting diode, Light Emitting Diode) light fixture promptly becomes one whirlwind of illumination circle; Because the LED light fixture has low power consumption, characteristics such as volume is little, reaction is fast, long service life, thus actively researched and developed by all circles, and replace various conventional bulb gradually and be applied to various light-emitting devices.The use of LED lamp is specially adapted to the public construction lamp again, and for example: light fixtures such as street lamp, flower garden lamp because the LED lamp can provide different brightness according to a number difference, and are applicable to different occasions; With existing mercury vapor lamp or high-pressure sodium street lamp is example, and brightness is about about 90 watts, and the street lamp of the equal brightness of LED lamp can save to 3/4ths compared to the Gao Yue of traditional person's power consumption, and its energy-conservation cost is very considerable; Moreover the LED lamp is as long as radiating treatment is proper, and its life-span is 90,000 hours, and traditional mercury vapor lamp promptly must be changed in about 2 years, and the life-span of LED lamp probably is five times of mercury vapor lamp, and the cost of saving is surprising especially.Although the LED light fixture has above-mentioned advantage, be used in every public construction lamp or home lighting apparatus but can't popularize comprehensively, trace it to its cause, still have the room for promotion except the cost cost still belongs to higher, LED crystal grain quality, the heat dissipation technology of light fixture more has the space of improvement.With present LED street lamp, regular meeting causes substrate fault, LED crystal grain light decay because of poor heat radiation and problem such as burns, and makes light fixture lose long-acting durable advantage.In this, sincerely as follows now to the case study of LED road lamp cooling; Look into; because the LED street lamp generally is arranged at the open air, relevant unit is according to CNS14165 electrical enclosure protection classification grade (IP sign indicating number), and the lamp housing that satisfies the need imposes the class requirement of dustproof and waterproof; its luminous site need meet the above regulation of IP65, and the power supply unit position then need meet the above regulation of IP54.Therefore, in above-mentioned standard, the lamp design of LED street lamp must seal, and the heat dissipation of general LED street lamp connects radiating fin more than pyrotoxin greatly, or pyrotoxin is conducted to metal lamp housing, extends radiating fin again on lamp housing; Only the thermal source of this kind street lamp will be closed among the airtight housing, or passive thermal source is scattered in fin, this light fixture perhaps is enough in the course of receiving or the short-term test stage of product, only when actual when being used in outdoor environment, regular meeting is because of the accumulation of foreign matters such as the adhering to of dust, birds ight soil, and has a strong impact on radiating effect; Especially, under Summer Sunshine irradiation, the fin on metal lamp housing and surface thereof, more can because of heat absorption with anti-substrate and the LED crystal grain of being passed to of thermal source, it can't be dissipated because of heat build-up causes light decay or burn; Especially, support the metal standpipe of lamp housing, also can produce high temperature because of the irradiation of sunlight, the hot gas that makes high temperature rises to the lamp housing neck with the standpipe of hollow, therefore this position often is again the installation site of transformer, electronic controller, will cause the loss of part maybe can't bear high temperature and shorten service life.In view of this, at foregoing problems, the creator is stake mental and physical efforts active research, and then develops a kind of innovation structure of light fixture heat radiation.

Summary of the invention

Purpose of the present invention promptly is to provide a kind of heat radiation of LED light fixture or the structure of auxiliary heat dissipation, makes the intrinsic thermal source of lamp housing be able to discharge the outside by air flue, and then improves the service life of light fixture.For reaching above-mentioned purpose, the present invention comprises a lamp housing body, this lamp housing body is coated with a cover body, make between lamp housing body and the cover body and form enclosure space, be provided with some LED crystal grain or electronic controller in this enclosure space, make this electronic controller and some LED crystal grain electrically connect, make it that light source of illumination is provided; Be provided with the air flue of hollow in the enclosure space of this lamp housing body, this air flue is to be connected to other side by a side of enclosure space, makes it form an air intake and a gas outlet, and this air flue is to be made of the good material of heat conductivity, and be isolated shape with enclosure space, be the perforation shape with the external world again; Thermal source in the enclosure space of lamp housing body can be by dispersion that air flue absorbs, hot gas and by the gas outlet discharge of air flue.This makes the intrinsic high temperature of lamp housing arrange to the outside by air flue, and then the effect of light fixture good heat radiating is provided, and makes it have the effect of waterproof and dustproof.

Description of drawings

Fig. 1 is that the present invention is the side-looking structural map of embodiment with the street lamp;

Fig. 2 is that A-A cutaway view and the air flue of Fig. 1 is provided with the first enforcement illustration;

Fig. 3 is the B-B cutaway view of Fig. 1;

Fig. 4 is that C-C cutaway view and the air flue of Fig. 1 is provided with the second enforcement illustration;

Fig. 5 is the plane of air flue the 3rd embodiment of the present invention;

Fig. 6 is the plane of air flue the 4th embodiment of the present invention;

Fig. 7 is the plane of air flue the 5th embodiment of the present invention;

Fig. 8 is that D-D cutaway view and the air flue of Fig. 7 is provided with the 6th enforcement illustration;

Fig. 9 is that the present invention is the schematic diagram of embodiment with the flower garden lamp.

Symbol description

10 lamp housing bodies, 11 cover bodies

12 enclosure space 13LED crystal grain

14 electronic controllers, 15 standpipes

20 air flues, 21 air intakes

22 gas outlets, 30 flower garden lamps

The specific embodiment

The technological means that relevant the present invention is used in order to reach the goal, and structural feature, the careful now preferred embodiment shown in the conjunction with figs. again is described in detail as follows:

Please consult shown in Fig. 1,2,3,4 simultaneously, the present invention comprises a lamp housing body 10, these lamp housing body 10 1 sides are coated with a cover body 11, make and form an enclosure space 12 between lamp housing body 10 and the cover body 11 at least, these some LED crystal grain 13 and electronic controller 14 (comprising power supply unit, transformer etc.) are to place in the enclosure space 12 of lamp housing body 10, these some LED crystal grain 13 also electrically connect with electronic controller 14, make it see through the light source that cover body 11 provides illumination; In addition, the Bian Duanke of lamp housing body 10 is fixing for a standpipe 15, in order to support lamp housing body 10 it is firmly stood.The main design of the present invention is, is provided with the air flue 20 of hollow in the enclosure space 12 of this lamp housing body 10; Wherein, this air flue 20 has an air intake 21 and a gas outlet 22 at least, and this air intake 21 is the height that are lower than gas outlet 22; This air flue 20 is to be isolated shape with enclosure space 12, and is the perforation shape with the external world again; This air flue 20 is to be made of the good material of heat conductivity, for example: metals such as aluminium, copper; This air flue 20 is to contact with the pyrotoxin or the heat build-up source of lamp housing body 10 inside.

By above-mentioned member, light fixture of the present invention is combined by lamp housing body 10 and cover body 11, make it form an enclosure space 12 at least, be provided with some LED crystal grain 13 and electronic controller 14 in this enclosure space 12, make some LED crystal grain 13 that the light source of illumination is provided, and be provided with the air flue 20 of hollow in the enclosure space 12 of lamp housing body 10, this air flue 20 has an air intake 21 and a gas outlet 22 at least, and the position of air intake 21 is lower, and the position of gas outlet 22 is higher, this air flue 20 is isolated shape with enclosure space 12 again, make this enclosure space 12 still be sealed shape with the external world, has waterproof equally, the dustproof effect, and the air intake 21 of air flue 20 2 ends and gas outlet 22 are to be the perforation shape with the external world, and extraneous air must be run through among the air flue 20; Again because this air flue 20 is to be made of the good material of heat conductivity, and with the pyrotoxin of lamp housing body 10 inside (as: LED crystal grain 13 or and pedestal, electronic controller 14 or and pedestal, radiating fin or the like) contact, the high temperature that makes enclosure space 12 internal causes running LED crystal grain 13 and produce, can pass through the good dispersion that air flue 20 absorbs of heat conductivity, also produce high temperature simultaneously because of air flue 20 heat absorptions, hot-airs in the air flue 20 rise and by discharging the gas outlet 22 of higher-end, and extraneous cold air is inhaled into by the air intake 21 of air flue 20 than low side, and then air flue 20 produced the cooling effect of air cooling, succeed the radiating effect that reaches light fixture.It will be further appreciated that, though this light fixture fails by day, yet under the situation of Summer Sunshine Gao Zhao, the fin on metal lamp housing and surface thereof, can absorb the thermal source of sunlight equally, and thermal source can be passed to LED crystal grain 13, electronic controller 14 etc., and perhaps standpipe 15 can produce high temperature because of the irradiation of sunlight, and the hot gas that makes high temperature rises to lamp housing body 10 with the standpipe 15 of hollow; The present invention contacts with the pyrotoxin of enclosure space 12 owing to air flue 20, so can absorb and disperse its thermal source by the good air flue of heat conductivity 20 equally, also the hot-air in the air flue 20 is constantly discharged the external world simultaneously, make its enclosure space 12 produce thermolysis lamp housing body 10.

Therefore, the main design of the present invention is the air flue 20 that is provided with hollow in the enclosure space 12 of lamp housing body 10, utilize the thermal source in these air flue 20 absorptions and the dispersion enclosure space 12, the external world of the hot-airs discharge in the air flue 20 also is provided simultaneously, make it produce the effect of heat radiation to light fixture.In view of this, air flue 20 of the present invention can have many examples and all can reach the creation effect; For example: with Fig. 2 is example, this air flue 20 is that the pipe fitting by the good material of heat conductivity is constituted, and the side by enclosure space 12 connects to other side, and the path that air flue 20 is provided with is the snakelike arrangement round LED crystal grain 13, and the thermal source that makes LED crystal grain 13 is by dispersion that air flue 20 absorbs.Perhaps, be example with Fig. 4, this air flue 20 is connected to other side by a side of enclosure space 12, and the path that air flue 20 is provided with is to arrange round the pyrotoxin of electronic controller 14, the thermal source that makes electronic controller 14 is by dispersion that air flue 20 absorbs.In addition, this air flue 20 is connected to other side by a side of enclosure space 12 again as shown in Figure 5, and only air flue 20 must be set as the expander shape.Perhaps, as shown in Figure 6, this air flue 20 is to be provided with in the enclosure space 12 with air intake more than two 21 and the gas outlet more than two 22, makes hot-air discharge extraneous effect and is able to rapider.

In addition, the example of air flue 20 of the present invention again can be shown in Fig. 7,8, air flue 20 directly is made of the pedestal of LED crystal grain 13, when cover body 11 is covered on lamp housing body 10 when making it form enclosure space 12, in the lump with air flue 20 clampings, make air flue 20 form the form that connects enclosure space 12, and make the enclosure space 12 and the external world be isolated shape, the air flue 20 inner and extraneous structures that connect, make thermal source in the enclosure space 12 by dispersion that air flue 20 absorbs equally, and this hot gas is discharged extraneous heat radiation function.

Though enforcement of the present invention is specially adapted to the LED street lamp, and especially as legend, only, enforcement of the present invention can be widely used in various outdoor lamp again, and flower garden lamp 30 as shown in Figure 9 is an embodiment.In the accompanying drawings, some lines, ratio, component thickness etc. may be by exaggerative in the hope of showing clear place; And used some component Name in the specification of the present invention only is to name in order to narrate embodiment, can not limit the present invention with its meaning of word.The above structure that is disclosed of the present invention is to be this creation preferred embodiment, and the equivalence of doing according to structure of the present invention changes such as, must contain to be placed within protection scope of the present invention.

Claims

1. LED lamp cooling structure, mainly comprise a lamp housing body, this lamp housing body is coated with a cover body, make between lamp housing body and the cover body and form enclosure space, be provided with some LED crystal grain or electronic controller in this enclosure space, make this electronic controller and some LED crystal grain electrically connect, make it that light source of illumination is provided; It is characterized in that, be provided with the air flue of hollow in the enclosure space of this lamp housing body, this air flue is to be connected to other side by a side of enclosure space, make it form an air intake and a gas outlet, this air flue is to be made of the good material of heat conductivity, and be isolated shape with enclosure space, be the perforation shape with the external world again; Thermal source in the enclosure space of lamp housing body can be by dispersion that air flue absorbs, hot gas and by the gas outlet discharge of air flue.

2. LED lamp cooling structure according to claim 1, it is characterized in that, be provided with the air flue of hollow in the enclosure space of this lamp housing body, the air intake position of this air flue is lower, the position, gas outlet is higher, and by this, air flue produces high temperature because of heat absorption, and the hot-air in the air flue can be discharged by the gas outlet of higher-end, and extraneous cold air is inhaled into by the air intake than low side.

3. LED lamp cooling structure according to claim 1 is characterized in that, is provided with the air flue of hollow in the enclosure space of this lamp housing body, and the pyrotoxin in this air flue and the enclosure space contacts.

4. LED lamp cooling structure according to claim 1 is characterized in that, is provided with the air flue of hollow in the enclosure space of this lamp housing body, and this air flue can become the expander shape.

5. LED lamp cooling structure according to claim 1 is characterized in that, is provided with the air flue of hollow in the enclosure space of this lamp housing body, and this air flue is to be provided with in the enclosure space with air intake more than two and the gas outlet more than two.

6. LED lamp cooling structure according to claim 1, it is characterized in that, be provided with the air flue of hollow in the enclosure space of this lamp housing body, this air flue can be directly be made of the pedestal of LED crystal grain, when cover body is covered on the lamp housing body when making it form enclosure space,, make air flue form the form that connects enclosure space in the lump with the air flue clamping, and make the enclosure space and the external world be isolated shape, the inner and extraneous structure that connects of air flue.