CN202327906U - Light-emitting diode (LED) road lamp capable of radiating easily - Google Patents

Abstract

The utility model discloses a light-emitting diode (LED) road lamp, which comprises a heat conducting pipe, a radiating rib plate and a lamp body. The radiating rib plate is arranged outside the lamp body, one end of the heat conducting pipe extends into the lamp body to be connected with an LED light source inside the lamp body, the other end of the heat conducting pipe penetrates through the radiating rib plate, and heat produced by the LED light source is delivered to the radiating rib plate through the heat conducting pipe. The lamp body comprises an upper lamp shade, a lower lamp shade, a reflecting plate, a base plate and a circuit driving system. The upper lamp shade and the lower lamp shade are connected in clamping mode to form a lamp shade, the reflecting plate, the base plate, the LED light source and the circuit driving system are all located in the lamp shade, and an edge of the reflecting plate is clamped with the connecting position of the upper lamp shade and the lower lamp shade and divides the lamp shade into two portions. The heat conducting pipe is connected onto one lateral side of the base plate in embedded mode, and the LED light source is embedded in the other lateral side of the base plate. The whole base plate is adhered onto the reflecting plate, and the circuit driving system is arranged at the tail portion of the lamp body. The LED road lamp can well solve the radiating and light distributing problems of the LED road lamps in the prior art.

Description

A kind of LED street lamp that is easy to dispel the heat

Technical field

The utility model relates to lighting technical field, and is particularly a kind of simple in structure, is easy to assembling, the street lamp of excellent radiation performance.

Technical background

High-power LED street lamp, be single power greater than more than 30 watts, adopt the street lamp of New LED semiconductor light sources, in the illumination of boom town, extraordinary application prospect is arranged.

Heat radiation and reliability are to influence great power LED to use principal element.Along with improving constantly of led chip power output, the high-power LED lamp heat dissipation technology is also had higher requirement.The heat dissipation problem of LED packaged light source is the very important problem that runs in the LED product development always, and wherein the heat conductivility of product material is just very crucial.What the cooling system of large power white light LED was made at present also is not very perfect, and the radiating mode that the LED street lamp adopts is mainly the forced convertion heat radiation, receives the lamp body profile, the restriction of cooling fin sheet material material, and seldom adopt Natural Heat Convection more efficiently.And the material radiating efficiency of heat radiation floor is not high yet, has directly influenced its radiating efficiency.When LED when being higher than 60 degrees centigrade, it is half that the heating efficiency of LED will reduce, and causes the waste of resource.The heat energy that is produced when LED is luminous can make LED knot surface temperature too high, and then influence product life cycle, luminous efficiency, stability if can't derive, and LED knot surface temperature, luminous efficiency and the relation between the life-span.

And existing LED street lamp internal structure is too tight, and the interference that interacts of each heat generating components is unfavorable for the integral heat sink of lamp.Therefore reasonably select, design radiator for use, can effectively reduce great power LED junction temperature, improve luminous mass and increase the service life.

Heat pipe heat radiation has the heat activity of overlength and the characteristics of heat sensitivity, under heating condition, after the heat absorption of the heat-conducting medium of the inside of heat pipe; Utilize concussion, the friction of molecule; Heat energy is excited fast, and be wavy quick transmission, heat is conducted to the other end rapidly from an end of heat pipe.In whole diabatic process, the surface of heat pipe demonstrates thermal conductance.Because heat conduction mainly realizes heat conduction through the medium of inside cavity, so the capacity of heat transmission is far above ordinary metallic material, and thermal conductivity factor is 3.2MW/ (mk), equivalent heat conduction sum can reach surface area just as the metallic hard material 7000 surplus times.

The magnesium alloy materials good heat conductivity, and light weight, good rigidly, have certain corrosion resistance and dimensional stability.The lamp of the same size that magnesium alloy and aluminum alloy materials are made carries out the variations in temperature test, light fixture is carried out 200 ℃ of heating 10min after, remove thermal source, under 23 ℃ of indoor air temperatures, whenever measure a temperature at a distance from 30sce.The light fixture of magnesium alloy materials making as a result, the speed of cooling is obviously greater than the aluminium alloy light fixture.In the die casting experimental test, during the light fixture of same size model magnesium alloy materials and aluminum alloy materials, the die sinking time ratio aluminium alloy of magnesium alloy materials shortens half the.The heat dispersion that magnesium is described is faster than aluminium alloy.

The utility model content

In order to overcome the difficult problem of large power road lamp heat radiation, the utility model technical problem to be solved provides a kind of LED street lamp, solves the heat radiation and the luminous intensity distribution problem of LED street lamp in the prior art.

The utility model solves the technical scheme that its technical problem adopted:

A kind of LED street lamp; Comprise heat pipe, heat radiation floor and lamp body, said heat radiation floor independently is arranged on outside the said lamp body; Said heat pipe one end stretches into lamp body; Be connected with light source in lamp body inside, the other end runs through this heat radiation floor, and this is delivered to the heat radiation floor to the heat that lamp source produces through heat pipe; Wherein,

Said lamp body comprises upper lamp shade, lower lamp shade, reflector; Substrate, led light source and drives system, said upper lamp shade and lower lamp shade snapping form lampshade; Said reflector, substrate, led light source and drives system all are positioned at this lampshade, and the edge card of said reflector is connected on upper lamp shade and lower lamp shade junction, and lampshade is divided into two parts; Interlocking has said heat pipe on said substrate one side, and the another side is inlaid with led light source, and this substrate integral body is attached on the reflector; Said drives system is arranged on the lamp body afterbody, is used to led light source electric energy is provided.

Further, in lamp body, heat is shed outside the lamp body, outside lamp body, adopt the mode of free convection to dispel the heat with heat pipe.The heat radiation floor adopts magnesium alloy materials, and its radiating effect is better than aluminium alloy floor radiating mode commonly used, and in light weight, is easy to machine-shaping.Magnesium alloy materials also has very strong resistance to corrosion, can guarantee that radiator uses out of doors for a long time.

Further, be connected between copper coin with heat pipe, smear one deck heat-conducting glue, make heat better pass hot plate and strengthen radiating effect through heat pipe at said substrate.

Further, said heat pipe adopts the seal with elastometic washer design with waiting junction, when deriving lampshade to heat, has protected effectively and to have waited body interior LED substrate and electronic box.

Further, described substrate top copper-clad is provided with groove structure, and thing heat pipe lower surface contacts with copper-clad entirely, has increased the heat-conducting area of big heat pipe.

The utility model is electroplated one deck anti-corrosion material outside the copper heat pipe, make heat pipe not affected by environment in the lamp body exterior portions, guarantees long-term normal use of radiator.

The said substrate of the utility model is made up of aluminium silicon carbide (Al-SiC) composition metal.Aluminium silicon carbide (Al-SiC) is a kind of to be metal-base composites (MMC), can improve the reliability and stability of components and parts significantly.

The said substrate of the utility model comprises three cloth optical planes, and three cloth optical planes adopt the raised type design, its principal plane with about two complex planes become 120 to spend.Can guarantee the abundance of light source like this, illumination is even, and has effectively increased illumination zone.

Three cloth optical planes of the said substrate of the utility model adopt two kinds of light source modules to match, and make lamp body can carry out modularization with the mode of light source module and install, also make things convenient for replacing and maintenance for lamp simultaneously.

The utility model adopts airflow design, is easy to moulding, is easy to air and flows, and is elegant in appearance, increased radiating efficiency.

Owing to adopted conduit heat-conducting heat radiation, and the mode that combines of free convection formula heat radiation, efficiently solve the problem of high-power LED street lamp heat radiation, improved the radiating efficiency of high-power LED street lamp, prolonged the service life of high-power LED street lamp.

The lamp body design of closed has prevented the pollution of dust to lamp body inside components and parts, has prolonged the service life of fluorescent tube, has guaranteed lighting quality simultaneously.

Adopt magnesium alloy materials to make lamp integral body light, the lower house place is designed with the installing hole identical with tube diameter can make lamp conveniently be mounted to the lamppost top, saves set-up time and cost.

The described heat pipe heat radiation structure of the utility model also is suitable for and makes the for example heat radiation solution of main thermal source in the circuit such as power driving circuit, linear power supply circuit of electronic radiation field.

Description of drawings

Fig. 1 is the structural representation of LED street lamp in the utility model specific embodiment.

Fig. 2 is a bottom schematic view in the utility model.

Fig. 3 is that the utility model heat pipe is connected partial schematic diagram with bottom substrate.

Fig. 4 is that the utility model heat pipe is connected partial schematic diagram with the sidepiece substrate.

Fig. 5 is the utility model back sketch map.

The specific embodiment

Below in conjunction with accompanying drawing and specific embodiment the utility model is described further.

Like Fig. 1, a kind of LED street lamp that this specific embodiment provides comprises heat pipe 1, heat radiation floor 2 and lamp body.Said heat radiation floor 2 independently is arranged on outside the lamp body; Like lamp body rear portion etc., it is provided with the position and can adjusts according to actual conditions, and said heat pipe 1 one ends stretch into lamp body; Be connected with light source in lampshade inside; Can accelerate great power LED institute quantity of heat production conduction of velocity to the external world in the lampshade, run through this heat radiation floor 2, be used for the heat transferred heat radiation floor 2 that produces the lamp source assembly in the lampshade outside.

Heat pipe 1 is sealing with sealing ring 9 with upper lamp shade 3 junctions.When being connected with external heat radiation floor 2, heat pipe 1 outside plating one deck magnesium alloy, thus effectively prevented rainwater and of the corrosion of other composition to heat pipe 1, prolonged the service life of lampshade greatly.

Heat radiation floor 2 places lampshade outside, has increased the convection current of air so to greatest extent, thereby radiating rate is significantly increased, and has reduced the surface area of lampshade, has practiced thrift material, has optimized the structure in the lamp body.

Said lamp body comprises upper lamp shade 3, lower lamp shade 4, reflector 5, LED substrate 6, light source assembly 7, drives system 8.Said upper lamp shade 3 and the lower lamp shade 4 formation lampshade that is interlockingly connected, reflector 5, LED substrate 6, light source assembly 7 and drives system 8 all are positioned at lampshade; The edge card of reflector 5 is connected on the lower edge of upper lamp shade, LED substrate 6 one sides and heat pipe 1 interlocking, and opposite side is inlaid with light source assembly 7, and whole attached on the reflector 5.Said drives system 8 is arranged on the lamp body afterbody, is used to light source assembly 7 electric energy is provided.

Upper lamp shade 3 seals through sealing ring 9 with lower lamp shade 4 junctions.

Said heat pipe 1 is made up of many groups heat-conducting copper pipe, and every group of heat-conducting copper pipe formed by outside heat pipe 10 with inner heat pipe 11.Its material is hollow copper pipe.Heat pipe 1 seals through sealing ring 9 with the connection hole of upper lamp shade 3.Outside heat pipe 10 is positioned at the lamp body outside, and its surface electrical is coated with one deck magnesium alloy protective layer, can effectively prevent the corrosion to heat pipe such as rainwater.Inner heat pipe 11 is embedded on the substrate 6, is used for heat on the substrate 6 is derived lamp body.

Said heat radiation floor 2 is arranged on the outside of lamp body, and multi-disc is arranged, can be according to the temperature of different regions, adjust its quantity the service time of lamp.Heat radiation floor 2 is fixedly installed on the draw-in groove of upper lamp shade 3 afterbodys of lamp.Heat radiation floor 2 adopts card slot type to be connected with upper lamp shade 3, and simple and convenient is installed; Outside heat pipe 10 one or many pass heat radiation floor 2, can carry out heat exchange effectively with floor 2 like this, thereby increase radiating efficiency.

Said upper lamp shade 3 is arranged on the top of lamp, with lower lamp shade 4 snappings.In order to prevent that rainwater etc. from flowing into the inner chamber of lamp from upper shell; With lower lamp shade 4 snapping places one sealing ring 9 is installed at upper lamp shade 3; Said sealing ring 9 can be common rubber seal, thereby lamp body is sealed, and has reduced the harmful effect of environment for lamp body that come from the outside.

The lamp upper lamp shade 3 of the utility model all adopts airflow design with lower lamp shade 4, all can be one time punching molded, and manufacturing process is simple and convenient, is easy to processing.

The utility model upper lamp shade 3 specifically comprises lampshade 30, sunken recess 31, heat conduction pore 32.Sunken recess 31 is positioned at the rear portion of lampshade 30, and heat conduction pore 32 is at domatic place that lampshade 30 is connected with sunken recess 31.Said lampshade is a level, is easy to ventilate, thereby reduces its interference for the lamp body lamppost.Sunken recess 31 guarantees that the heat radiation floor can have enough effective areas, has promoted the air at heat radiation floor place to flow, and has guaranteed that simultaneously the floor part is consistent with upper lamp shade 3 whole heights, thereby has both strengthened heat radiation, guarantees that also lamp body is elegant in appearance simultaneously.Heat conduction pore 32 by heat pipe when upper lamp shade 3 passes the hole of process, with sealing ring 9 sealings, prevent that dust rainwater etc. from getting into lamp body, reaches the purpose of protecting the lamp body internal structure around the hole.

Said lower lamp shade 4 is arranged on the bottom of lamp, is made up of light-passing board 40, lower shoe 41 and division board 44; Light-passing board 40 is positioned at the front portion of lower lamp shade 4, and lower shoe 41 is positioned at the rear portion of lower lamp shade 4, and the two is connected, and constitutes the lampshade lower surface; The cavity of division board 44 and lower shoe 41 built-up circuit drive systems 8; But division board 44 is provided with the switch top cover, is convenient to installing and fixing of circuit part; Be used to install drives system 8 in the cavity; Have circuit louvre 42 on this lower shoe 41; Lower lamp shade rear portion vertical direction has the connecting hole 43 of lamppost and lamp body.

Wherein light-passing board 40 is different with the material of lower shoe 41, and light-passing board 40 adopts organic transparent glass, guarantees the abundant transmission of LED light; Lower shoe 41 adopts aluminum alloy materials, wear-resisting waterproof, effectively holding circuit system.43 is the connecting hole of lamp body and lamppost, and a sealing ring 9 wherein is installed, and prevents the normal practicality of entering interference lamps such as dust rainwater.

As shown in Figure 2, said reflector 5 is by side reflector 50, middle part reflector 51, and head reflector 52 is formed.Form inverted ship type by two side reflectors 50 and a slice middle part reflector 51, and a reflector 52 is trapezoidal, is buckled in the front end of formed ship type.Wherein 50,51,52 go into different angles, increase logical light face, it is base material that reflector 5 adopts PET, PVC, PC, and surperficial silver color has the minute surface reflecting effect, is convenient to reflect the focusing of LED light that lamp comes out, energy savings and high temperature resistant.On reflector 50,51,52, be equipped with circular opening and be connected, be used for fixing substrate with substrate 6.

Like Fig. 3, shown in 4, said LED substrate 6 is by positive bottom surface substrate module 60, side substrate module 61, and attachment screw 621,620, substrate copper-clad 63, heat-conducting glue forms 64.Heat-conducting glue 64 is adhesive base plate copper-clad 63 and positive bottom surface substrate module 60, side substrate module 61 respectively; Said positive bottom surface substrate 60, side substrate module 61 matches with reflector 50,51 shapes, and with screw 620,621 with positive bottom surface substrate 60, side substrate module 61 is individually fixed on the reflector 50,51; Screw 620,621 is a standard screws common on the market.Light source assembly 7 is installed on bottom surface substrate module 60, the side substrate module 61, and its heat that sends is through heat-conducting glue 64, and substrate copper-clad 63 is transmitted to lamp cavity and heat-conducting copper pipe 1 place.Be to increase heat pipe 1 and copper-clad 63 contacts area, specially a low groove is set with heat pipe 1 is bonding at copper-clad 63, the convenient heat radiation.Heat connects heat radiation floor 2 through heat pipe 1 derives lamp body with heat.Reach the purpose of heat radiation.

Said LED substrate 6 is made up of aluminium silicon carbide (Al-SiC) composition metal.Aluminium silicon carbide (Al-SiC) is a kind of to be metal-base composites (MMC).The compound high-termal conductivity with metal material of Metal Substrate combines with the low thermal coefficient of expansion that increases material; Having the coefficient of heat conduction big (for 200w/ (mK)), thermal coefficient of expansion can adjusting, intensity and advantages such as hardness height, low cost of manufacture, can improve the reliability and stability of components and parts significantly.

Shown in said light source assembly 7 be installed on the LED substrate 6, be divided into two kinds of modules and install.Positive bottom surface substrate is installed module 60 about 1～4 module (can according to the size adjustment quantity of lamp), is embedded with two row led chips on each module 60,6～10 LED of every row.Two side substrates are installed module 61 each 1～3 module (can according to the size adjustment quantity of lamp), are embedded with 1～3 row led chip on each module 61,8～12 LED of every row.

As shown in Figure 1, said drives system 8 is arranged in the lamp body, and is very near apart from light source assembly, the thermal losses that has reduced in conducting process to be produced, and energy savings has also prolonged service life of lamp.

When lamp was worked, light source module 7 can produce heat with drive circuit 8.The heat that light source module 7 produces is by heat-conducting glue 64, and copper-clad 63 passes to heat pipe 1, by heat pipe heat is delivered in lampshade on the heat radiation floor 2 outside the lampshade again.Carry out high efficiency and heat radiation by heat radiation floor 2.The heat that drive circuit 8 produces is dispersed into outside the lampshade through the louvre on the lower shoe 41 42.Because drive circuit is installed in the cavity, has avoided the interference of its heat that distributes to light source module 7.To sum up, the utility model has solved the each several part heat dissipation problem that is produced in the lampshade effectively, has increased the life-span of lamp.

Claims (10)

1. LED street lamp; Comprise heat pipe (1), heat radiation floor (2) and lamp body, said heat radiation floor (2) is arranged on outside the said lamp body; Said heat pipe (1) one end stretches into lamp body; The led light source (7) inner with lamp body is connected, and the other end is through this floor that dispels the heat (2), and the heat that led light source (7) produces is delivered to heat radiation floor (2) through heat pipe (1); Wherein,

Said lamp body comprises upper lamp shade (3), lower lamp shade (4), reflector (5); Substrate (6) and drives system (8); Said upper lamp shade (3) and lower lamp shade (4) snapping form lampshade, and said reflector (5), substrate (6), led light source (7) and drives system (8) all are positioned at lampshade, and the edge card of said reflector (5) is connected on upper lamp shade (3) and lower lamp shade (4) junction; Lampshade is divided into two parts; Interlocking said heat pipe (1) on said substrate (6) one sides, led light source (7) is inlayed in the another side, and this substrate (6) is whole attached on the reflector (5); Said drives system (8) is arranged on the lamp body afterbody, is used to led light source (7) electric energy is provided.

2. LED street lamp according to claim 1; It is characterized in that said heat pipe (1) is made up of at least one group of heat-conducting copper pipe, every group of heat-conducting copper pipe comprises outside heat pipe (10) and connected inner heat pipe (11); Said outside heat pipe (10) is positioned at the lamp body outside; Its surface electrical is coated with the magnesium alloy protective layer, and said inner heat pipe (11) is embedded on the substrate (6), is used for heat is derived lamp body.

3. LED street lamp according to claim 1 and 2 is characterized in that, said reflector (5) comprises middle part reflector (51); Head reflector (52) and two side reflectors (50); Two side reflectors (50) and head reflector (52) all are certain inclination angle with middle part reflector (51) and link to each other, and the inverted spill of whole formation is to be used for optically focused; Said reflector has hole on (5), and said led light source (7) is placed in the described hole.

4. LED street lamp according to claim 3 is characterized in that, said reflector (5) base material is PET, PVC or PC.

5. according to claim 2 or 4 described LED street lamps; It is characterized in that; Said substrate (6) comprises positive bottom surface substrate module (60), side substrate module (61) and substrate copper-clad (63), said positive bottom surface substrate module (60); Side substrate module (61) matches with the middle part reflector (51) and side reflector (50) shape of said reflector (5) respectively; Be fixed on this middle part reflector (51) and the side reflector (50) to fit respectively, said positive bottom surface substrate (60), said substrate copper-clad (63) is all posted on side substrate module (61) surface; Said led light source (7) is installed on this bottom surface substrate module (61) and/or the side substrate module (61), and said inner heat pipe (11) adheres in the Baltimore groove on the said substrate copper-clad (63).

6. according to claim 1,2 or 4 described LED street lamps; It is characterized in that; Said upper lamp shade (3) rear portion has domatic, and this domatic medial recess forms groove (31); Said upper lamp shade (3) locates to have heat conduction pore (32) at this groove (31), and said heat pipe (1) passes said lampshade (3) through this heat conduction pore (32).

7. according to claim 1,2 or 4 described LED street lamps; It is characterized in that said lower lamp shade (4) is arranged on the lamp body bottom, comprise light-passing board (40), lower shoe (41) and division board (44); Light-passing board (40) is positioned at the front portion of lower lamp shade (4); Lower shoe (41) is positioned at the rear portion of lower lamp shade (4), and the two is connected to form the lampshade lower surface, and said division board (44) is positioned at lower lamp shade (4) rear portion; Form cavity with lower shoe (41), be used for ccontaining said drives system (8).

8. LED street lamp according to claim 7 is characterized in that, has louvre (42) on the said lower shoe (41), and lower lamp shade (4) afterbody has and is used for the connecting hole (43) that is connected with lamppost.

9. LED street lamp according to claim 8 is characterized in that, said light-passing board (40) is organic transparent glass, and said lower shoe (41) adopts aluminum alloy materials.

10. according to claim 1,2,4 or 8 described LED street lamps, it is characterized in that each junction of said lamp body all seals through sealing ring (9).

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