CN203052424U

CN203052424U - Light emitting diode (LED) street lamp device

Info

Publication number: CN203052424U
Application number: CN2013200199321U
Authority: CN
Inventors: 区琼荣; 梁荣庆
Original assignee: Fudan University
Current assignee: Fudan University
Priority date: 2013-01-15
Filing date: 2013-01-15
Publication date: 2013-07-10
Anticipated expiration: 2023-01-15

Abstract

The utility model belongs to the technical field of solid state lighting, and particularly relates to a light emitting diode (LED) street lamp device. The LED street lamp device comprises a heat-sink, a clamp groove, a heat pipe, a flange, an outer shell, an LED light source, a lens and driving power sources. A semicircular groove is formed in a heat-sink ridge and a semicircular groove is formed in the clamp groove. The radius of each groove is equal to the outer radius of a base tube of the heat tube. The heat-sink and the clamp groove are enabled to tightly cover one end of the heat tube through screws. The flange is arranged at the other end of the heat tube. The LED driving power sources are arranged on both sides of the heat-sink ridge. The integrated LED light source is directly attached to the front side of the heat-sink. The lens covers on the outer side of the integrated LED light source. The outer shell covers the two driving power sources from the back side of the heat-sink. A plurality of fins are arranged on the heat tube. The LED street lamp device has the advantages of being strong in heat dissipation performance, light in weight, small in size, high in safety, saving in manufacturing cost due to the fact that the LED street lamp device can be manufactured by using an existing street lamp device, and waste of resources is reduced.

Description

A kind of LED road lamp device

Technical field

The utility model belongs to the solid-state illumination technical field, is specifically related to a kind of device of road lighting.

Background technology

Current, the main development trend of solid state light emitter can simplified summary be: the device thermal resistance minimizes, device size miniaturization, thermoelectric management separating purification, use the installation form Surface Mounting Technology, optical lens silica gel model is integrated, the integrated encapsulating face light source of COB is exactly a typical case.The integrated encapsulating face light source of COB adopts the integrated encapsulation of multi-chip to add the lens luminous intensity distribution, the good copper base support of heat conduction or the encapsulation of silver-plated copper base support several still to hundreds of in the middle low power chip of series and parallel, to reach needed lighting power, thermal resistance is lower, because light source is concentrated, luminous intensity distribution is easy, good seal, also is expected to realize miniaturization and lighting, and may significantly reduce packaging cost and light fixture manufacturing cost, the main flow of high power solid state light source during the COB integrated LED light source progressively becomes.Yet, because the integrated 2 * 2cm that is encapsulated in of multi-chip ²Area in, power and thermal is too concentrated, the heat that discharges from LED goes if can not in time be dispersed into the environment, often cause chip temperature too high, have a strong impact on light efficiency and the life-span of COB encapsulated LED integrated optical source, this is the major obstacle of restriction COB encapsulated LED integrated optical source large-scale application.

Through public illumination reducing energy consumption engineering propelling for many years, solid-state illumination has been used progressively from the developing market in early stage and has been replaced market penetration to storage, yet, the LED light fixture is replaced the storage conventional lamp, face at least two kinds of selections: a kind of is the selection of light source, be the integrated area source of lamp pearl or COB, the latter is in miniaturization, modularization, luminous intensity distribution optimization and fall aspects such as cost significant advantage is all arranged, but heat dissipation problem is severeer; Another kind is exactly the selection of lamp stand, be newly-increased lamp stand or the existing lamp stand of reservation that is complementary with LED light fixture weight, the conventional road lamp of storage is millions of, the light fitting quality of conventional road lamp is light, supporting with it lamp stand weight capacity is difficult to support tens kilograms aluminium radiator LED street lamp, if it is heavy with quality, and bulky LED street lamp is replaced the conventional road lamp of storage, need millions of lamp stand that also has of replacing simultaneously, this is the numeral of a flood tide, and keep existing weight capacity and the unmatched lamp stand of LED light fixture weight can be saved huge engineered cost undoubtedly, still, danger coefficient also is huge.Obviously, select the integrated area source of COB, and to keep existing lamp stand be a comparatively ideal technology path, key issue is to resolve the lighting problem of heat dissipation problem and the light fixture of COB light source.

China's utility model patent, publication number CN101526204 and CN102353030A, a kind of " high-power forced radiation type heat pipe LED illumination device " and " a kind of heat pipe LED bulkhead lamp capable radiator " disclosed respectively, be to establish the led light source aluminium base at the lower surface of substrate radiator, substrate radiator upper surface is provided with heat pipe, and the excircle of heat pipe is provided with the fin of parallel arrangement; Because what adopt is minor diameter hydrocone type heat pipe, diameter is usually less than 12mm, and the capillary of hydrocone type tubule footpath heat pipe stops up easily, makes the decline of heat pipe for thermal conductivity rate even high thermal resistance, poor reliability occur.And hydrocone type heat pipe structure complexity, manufacturing cost height, poor stability, heat conduction and heat radiation poor effect.By comparison, the utility model provides a kind of gravitational force refluxing type large diameter vacuum heat-pipe radiator, has the characteristic of excessive heat conductance, big heat-delivery surface and open radiating surface, can have fully with air contact, convection current, reject heat in the environment; And there is not the capillary blockage problem in long, working stability of gravitational force refluxing type vacuum heat-pipe life-span.Compare with the aluminium base radiator street lamp that volume is big and heavy, the major diameter vacuum heat-pipe radiator that the utility model adopts is the part of street lamp bracket, has lost big and heavy aluminium base radiator, and weight diminishes significantly, and security promotes.

Summary of the invention

The purpose of this utility model is to provide a kind of good heat dissipation, stable performance, long LED road lamp device of life-span.

The LED road lamp device that the utility model provides, it mainly is made up of heat sink 1, draw-in groove 2, led light source 3, lens 4, driving power 5, heat pipe 6, flange 7 and shell 8.

Wherein, described heat sink 1 a smooth side is heat sink front, and the side that protruding spine is arranged is the heat sink back side; Described led light source 3 is arranged at heat sink front; Described lens 4 from outside cover led light source 3; The protruding spine place at the described heat sink back side is provided with groove; One end of described heat pipe 6 is arranged in the groove, covers on the groove by draw-in groove 2, and is fixing with heat sink 1; The other end of heat pipe 6 connects with flange 7; Described driving power 5 is arranged at the heat sink back side; Described shell 8 is arranged at the heat sink back side, and covers the whole heat sink back side fully; As shown in Figure 1.

Described heat pipe 6 is provided with some fins 602; Described fin 602 is equidistantly arranged perpendicular to heat pipe 6; The end that heat pipe 6 is provided with blue method 7 is cold junction, and the other end (namely connecting an end of heat sink 1) is the hot junction.

In the utility model, heat pipe 6 connects with the street lamp lamppost by flange 7; The cold junction horizontal level of described heat pipe 6 is higher than the hot junction of heat pipe 6, makes the heat in hot junction better to the cold junction transmission; As shown in Figure 2.

In the utility model, all be provided with the semi-circular recesses that equates with heat pipe 6 overall diameters on described heat sink 1 protruding spine and the draw-in groove 2, heat sink 1 protruding spine cooperates with draw-in groove 2 holds the hot junction of heat pipe 6 tightly, fixes by screw, make heat sink 1 and the hot junction of heat pipe 6 between thermal resistance minimize.

In the utility model, described fin 602 is annular.

In the utility model, described heat pipe 6 is from the installation starting point of hot junction 250mm as fin 602, and at installation starting point place, heat pipe 6 upwards bends 10 ~ 20 degree.

In the utility model, described heat pipe 6 is the gravitational force refluxing type heat pipe, and the pipe overall diameter is greater than 20mm; No matter be the heat conduction and heat radiation ability, or stability or cost, all significantly be better than the hydrocone type heat pipe.

In the utility model, described 6 whiles of heat pipe are as street lamp heat radiator and light pole; Heat pipe 6 and fin 602 all adopt aluminum alloy materials, the thermal conductivity height, and quality is light.

The utility model in use, the heat that the work of LED lamp the time is sent conducts to cold junction from the hot junction of heat pipe, in heat transfer process, fin on the heat pipe is as the auxiliary heat dissipation sheet, enlarged area of dissipation, accelerated heat and distributed, the temperature when reducing device work.

Advantage of the present utility model is, road lamp device quality and volume at present employing LED integrated optical source are big, and it is bad to dispel the heat, cause problems such as security risks and light decay, adopt large diameter gravitational force refluxing type vacuum heat-pipe as radiator, not only have superior heat conduction and heat radiation performance, can also reduce light fixture weight, improve security.Simultaneously can utilize the transitional street lamps device to transform, save manufacturing cost, reduce the wasting of resources.

Description of drawings

Fig. 1 is structural representation of the present utility model.

Fig. 2 is scheme of installation of the present utility model.

Number in the figure: 1 is heat sink, and 2 is draw-in groove, and 3 is integrated LED light source, and 4 is lens, and 5 is driving power, and 6 is heat pipe, and 7 is flange, and 8 is shell, and 602 is fin.

The specific embodiment

Further describe the utility model below.

Adopt the road lamp device of fin heat pipe radiator to comprise each one on heat sink, draw-in groove, aluminium alloy heat pipe, flange and shell, each two of integrated LED light source, lens and driving powers.

Wherein, a heat sink smooth side is heat sink front, and the side that protruding spine is arranged is the heat sink back side; Two led light sources are arranged at heat sink front; Lens from outside cover led light source.Two driving powers are arranged at the both sides of the protruding spine in the heat sink back side respectively; Be used for two led light sources of control; Shell is arranged at the heat sink back side, and covers the whole heat sink back side fully.

All be provided with the semi-circular recesses that equates with the heat pipe overall diameter on heat sink protruding spine and the draw-in groove, heat sink protruding spine cooperates with draw-in groove holds an end (hot junction) of heat pipe tightly, fixes by screw, makes that thermal resistance minimizes between the hot junction of heat sink and heat pipe.

Heat pipe is the gravitational force refluxing type heat pipe, and the pipe overall diameter is 40mm; From heat pipe hot junction 250mm, heat pipe upwards bends 15 degree, and begins to arrange the circular fin of some aluminium alloys; The fin diameter is 100mm, and perpendicular to heat pipe, the equidistant arrangement is up to cold junction;

The other end (cold junction) at heat pipe connects with flange; Flange connects with the street lamp lamppost, and guarantees that a section of 250mm at place, heat pipe hot junction is parallel to ground.Like this, the cold junction horizontal level of heat pipe is higher than the hot junction of heat pipe, makes the heat in hot junction better to the cold junction transmission; As shown in Figure 2.

Assembling process is as follows:

1. the cradle back of two LED integrated optical sources is coated the thermal conductive silicon purport, mount heat sink front, fastening with screw, cradle back and heat sink surface are fitted tightly.

2. two driving powers with LED integrated optical source coupling are installed on both sides, the calorifics back side respectively, power supply output line are passed heat sink panel, and be welded to LED integrated optical source input.

3. respectively two LED integrated optical sources are covered on the center with two lens, be provided with rubber gasket between two lens and the heat sink front; Finish the lamp holder assembling.

4. be coated with full heat-conducting silicone grease at the hot junction of heat pipe outer surface of tube body.

5. the lamp holder that the 1-3 step is assembled with draw-in groove tightly is stuck on the hot junction mouth of pipe of heat pipe.

6. shell is covered two driving powers from the heat sink back side.

7. the road lamp device that the 1-6 step is assembled is fixed on the street lamp king light bar, and lamp holder is a little less than mounting flange.

Claims

1. a LED road lamp device is characterized in that mainly being made up of heat sink (1), draw-in groove (2), led light source (3), lens (4), driving power (5), heat pipe (6), flange (7) and shell (8);

Wherein, described heat sink (1) smooth side is heat sink front, and the side that protruding spine is arranged is the heat sink back side; Described led light source (3) is arranged at heat sink front; Described lens (4) from outside cover led light source (3); The protruding spine place at the described heat sink back side is provided with groove; One end of described heat pipe (6) is arranged in the groove, covers on the groove by draw-in groove (2), and is fixing with heat sink (1); The same flange of the other end (7) of heat pipe (6) connects; Described driving power (5) is arranged at the heat sink back side; Described shell (8) is arranged at the heat sink back side, and covers the whole heat sink back side fully;

Described heat pipe (6) is provided with some fins (602); Described fin (602) is equidistantly arranged perpendicular to heat pipe (6); The end that heat pipe (6) is provided with blue method (7) is cold junction, the other end, and an end that namely connects heat sink (1) is the hot junction.

2. LED road lamp device according to claim 1 is characterized in that heat pipe (6) connects with the street lamp lamppost by flange (7); The cold junction horizontal level of described heat pipe (6) is higher than the hot junction of heat pipe (6), makes the heat in hot junction better to the cold junction transmission.

3. LED road lamp device according to claim 1, it is characterized in that being provided with the semi-circular recesses that equates with heat pipe (6) overall diameter on the protruding spine of described heat sink (1) and the draw-in groove (2), the protruding spine of heat sink (1) cooperates with draw-in groove (2) holds the hot junction of heat pipe (6) tightly, fix by screw, make that thermal resistance minimizes between the hot junction of heat sink (1) and heat pipe (6).

4. LED road lamp device according to claim 1 and 2 is characterized in that described heat pipe (6) from the installation starting point of hot junction 250mm as fin (602), and the starting point place is being installed, and heat pipe (6) upwards bends 10 ~ 20 degree.

5. LED road lamp device according to claim 1 is characterized in that described fin (602) is annular.

6. LED road lamp device according to claim 1 is characterized in that the pipe overall diameter of described heat pipe (6) is greater than 20mm.