Background technology
As everyone knows, along with the very general life that has entered into people now of the progressive automobile of society, need possess the ability of in night or dark surrounds, moving as a kind of transport facility automobile, so all be equipped with car light on present automobile or the motor vehicle.
Experience electric light source headlamp, twin light lamp core headlamp, asymmetrical passing beam headlamp, halogen tungsten headlamp in the evolution of auto lamp successively, filled Xe lamp bulb, the several developing stage of Xe lamp bulb.
Auto lamp light source market is mainly occupied by Halogen lamp LED and xenon lamp for a long time, but these two kinds of traditional lighting lamps all exist fatal weakness in various aspects such as brightness, life-span, volume, heating degree, colour temperature adjustment and robustnesses.In recent years, along with improving gradually and the decline gradually of cost of the luminous efficiency of light emitting diode (LED), semiconductor lighting becomes the development trend of modern illumination gradually, be described as after incandescent lamp, fluorescent lamp and electricity-saving lamp the 4th generation lighting electric light source, be called as " 21st century green light source ".LED is as new type light source, has long, energy-conservation, advantage such as light quality is good, simple in structure, the response fast, voltage is low, volume is little of life-span.
Each traditional lighting major company of the world is also stepping up to carry out the research work that the LED illumination is used, and LED is as application such as car headlamp, body light, brake lamp maturation and obtain very good effect and economic benefit.But, still need to carry out the improvement of fitting structure, to guarantee the normal junction temperature of LED.
Our company has applied for a patent of invention and a utility model patent simultaneously on 01 16th, 2013, utility model patent number: ZL 201320020197.6 has announced a kind of efficient radiating apparatus and has been provided with the LED auto lamp of this device, it is by arranging the copper pipe heat pipe in order to increase rate of heat dispation in the radiating fin group, reduce the junction temperature of LED, the light fixture of this structure is under the bigger situation of lamp power, and the speed of heat radiation is unsatisfactory.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of LED car headlamp with better heat dispersion, makes the LED auto lamp still have lower junction temperature in high-power.
In order to solve the problems of the technologies described above, the technical solution used in the present invention: a kind of high-efficiency heat radiating LED car headlamp, comprise lamppost and lamp socket, the bottom surface of described lamp socket is fixedly connected with heat abstractor, this heat abstractor is mainly by fan with reeded radiating fin group is set forms, and described fan removably is fixed in the groove of radiating fin group.
As a further improvement on the present invention, the copper pipe heat pipe can be set in lamppost, described copper pipe heat pipe is fixed in the lamppost by the mode of welding, and run through the radiating fin group that described lamp socket and lamp socket bottom surface arrange, the conductive fluid vaporization of copper pipe heat pipe inside, liquefaction can further improve the speed that the heat between lamppost and the lamp socket is transmitted.Described copper pipe heat pipe is preferably two.
As a further improvement on the present invention, on lamppost, be provided with groove with the lamp socket contact position, in order to hold in the lead turnover lamppost.
As a further improvement on the present invention, described high-efficiency heat radiating LED car headlamp also comprises back cover, and described back cover is fixed on the base by screw thread.Back cover can prevent that foreign object from stretching into damage radiating fin group or fan, the service life of having improved light fixture.
As a further improvement on the present invention, the lamppost outside is provided with Fixing clamp-seat, the described Fixing clamp-seat integrative-structure that the column type lid that has opening and cylinder constitute of serving as reasons, the diameter of column type lid is greater than the diameter of cylinder, and the diameter of column type lid is provided with two " L " type mounting grooves symmetrically greater than the diameter of cylinder on the cylinder.Fixing clamp-seat is in order to be socketed in the lamppost surface, and guardwire prevents that lead from being damaged by groove.
As a further improvement on the present invention, the cylindrical outer surface of Fixing clamp-seat also is socketed with snap ring, the external peripheral surface of snap ring is provided with three projectioies, three projectioies along excircle, be 120 degree between any two and distribute, in order to car headlamp is fixed in the automobile lampshade.
As a further improvement on the present invention, a cutting ferrule can be set, be provided with two projectioies on the external peripheral surface of cutting ferrule symmetrically, two projectioies are connected with two " L " type mounting grooves on the Fixing clamp-seat, and cutting ferrule and Fixing clamp-seat are linked together.
As a further improvement on the present invention, a snap ring can also be set, the external peripheral surface of snap ring is provided with three projectioies, three projectioies along excircle, be 120 degree between any two and distribute, in order to be installed in the automobile lampshade, snap ring and lampshade are fixed, for the installation of LED car headlamp provides bridge.
LED auto lamp of the present invention is in work, and the heat of generation is delivered to the radiating fin group by the heat transmission and dispels the heat, and fan rotates, and improves radiating fin group ambient air flow rate, thereby has strengthened radiating fin group rate of heat dispation.The present invention is particularly useful for powerful fitting structure.
The specific embodiment
Embodiment 1:
As depicted in figs. 1 and 2, the high-efficiency heat radiating LED car headlamp of a kind of 30W comprises lamppost 6 and lamp socket 3, and lamp socket 3 fixedly is integral structure with lamppost 6 by the mode of welding, and lamp socket 3 works to support lamppost 6 and accelerates lamppost 6 rates of heat dispation.
The mode of the underrun welding of lamp socket 3 is fixedly connected with circular radiating fin group 4, radiating fin group 4 can dissipate lamppost 6 heat fast and be delivered to heat on the lamp socket 3, accelerate the rate of heat dispation of light fixture, reduce junction temperature, prevent from damaging because junction temperature is excessive led light source 7.Radiating fin group 4 is provided with groove 5, in order to settle fan 2; Also be provided with installing hole 10 and hold the ellipse hole 11 that lead passes through.
Fan 2 is positioned in the groove 5, and is fixed on the radiating fin group 4 by screw, and the lead on the fan 2 is connected with the power supply of outside by the ellipse hole 11 that arranges on the lamp socket 3.
The surface of lamp socket 3 is provided with screw thread 12; be with back cover 1 at lamp socket 3; and the inside of back cover 1 is provided with screw thread 18; back cover 1 is fixing with lamp socket 3 by screw thread 18 and screw thread 12; radiating fin group 4 and the fan 2 of protection lamp socket 3 bottom surfaces; prevent that foreign object from stretching into damage radiating fin group 4 or fan 2, improves the service life of light fixture.
On the lamppost 6, be provided with groove 13 with lamp socket 3 contact positions, in order to hold in the lead turnover lamppost 6.
Lamppost 6 parts are cylindric, it is rectangular-shaped that another part is, on that rectangular-shaped a part of lamppost 6, by screw led light source 7 is arranged fixedly, led light source 7 has two, lay respectively on two opposites of that rectangular-shaped a part of lamppost 6, lead on the led light source 7 is along lamppost 6 inside, and is connected with the power supply of outside by the groove 13 that arranges on the lamppost 6.
The inside of lamppost 6 is provided with two copper pipe heat pipes 8, copper pipe heat pipe 8 is fixed in the lamppost 6 by the mode of welding, and pass the radiating fin group 4(that arranges on lamp socket 3 and lamp socket 3 bottom surfaces as shown in Figure 3), copper pipe heat pipe 8 is by vaporization and the liquefaction of inner conductive fluid, the heat that can fast led light source 7 be sent, the junction temperature on the led light source 7 and the junction temperature on the lamppost 6 are delivered to radiating fin group 4, accelerate the heat transfer rate between lamppost 6 and the lamp socket 3, reduce the junction temperature of lamppost 6, prevent the too high damage led light source 7 of junction temperature.
Also be with Fixing clamp-seat 9 on the lamppost 6, Fixing clamp-seat 9 is for to have the column type lid 14 of opening and the integrative-structure that cylinder 15 constitutes by one, and the diameter of column type lid 14 is greater than the diameter of cylinder 15, outer surface at cylinder 15 also is socketed with snap ring 16, the external peripheral surface of snap ring 16 be provided with 17, three projectioies 17 of three projectioies along excircle, be 120 degree between any two and distribute.
The high-efficiency heat radiating LED car headlamp of present embodiment is in the process of installing, earlier lamppost 6 is passed the lampshade of the car headlamp of automobile to be installed, rotate then, make three projectioies 17 that arrange on the Fixing clamp-seat 9 block the draw-in groove that arranges on the lampshade of car headlamp to be installed, namely finished installation, easy for installation, and firmly.
Present embodiment high-efficiency heat radiating LED car headlamp is under 28 ℃ the situation in environment temperature, and continuous illumination 2,3,4,5 hours temperature test result are as follows:
Embodiment 2:
As shown in Figure 4 and Figure 5, the high-efficiency heat radiating LED car headlamp of a kind of 30W, comprise lamppost 112 and lamp socket 111, lamp socket 111 fixedly is integral structure with lamppost 112 by the mode of welding, and lamp socket 111 works to support lamppost 112 and accelerates lamppost 112 rates of heat dispation.
The mode of the underrun welding of lamp socket 111 is fixedly connected with circular radiating fin group 117, radiating fin group 117 can dissipate lamppost 112 heat fast and be delivered to heat on the lamp socket 111, accelerate the rate of heat dispation of light fixture, reduce junction temperature, prevent from damaging because junction temperature is excessive led light source 113.Radiating fin group 117 is provided with groove 118, in order to settle fan 119; Also be provided with installing hole 126 and hold the ellipse hole 127 that lead passes through.
Fan 119 is positioned in the groove 118, and is fixed on the radiating fin group 117 by screw, and the lead on the fan 119 is connected with the power supply of outside by the ellipse hole 127 that arranges on the lamp socket 111.
The surface of lamp socket 111 is provided with screw thread 128; be with back cover 120 at lamp socket 111; and back cover 120 inside are provided with screw thread 133; back cover 120 is fixing with lamp socket 111 by screw thread 128 and screw thread 133; radiating fin group 117 and the fan 119 of protection lamp socket 111 bottom surfaces; prevent that foreign object from stretching into damage radiating fin group 117 or fan 119, improves the service life of light fixture.
On the lamppost 112, be provided with groove 121 with lamp socket 111 contact positions, in order to hold in the lead turnover lamppost 112.
Lamppost 112 parts are cylindric, it is rectangular-shaped that another part is, on that rectangular-shaped a part of lamppost 112, by screw led light source 113 is arranged fixedly, led light source 113 has two, lay respectively on two opposites of that rectangular-shaped a part of lamppost 112, lead on the led light source 113 is along lamppost 112 inside, and is connected with the power supply of outside by the groove 121 that arranges on the lamppost 112.
The inside of lamppost 112 is provided with two copper pipe heat pipes 122, copper pipe heat pipe 122 is fixed in the lamppost 112 by the mode of welding, and pass the radiating fin group 117(that arranges on lamp socket 111 and lamp socket 111 bottom surfaces as shown in Figure 6), copper pipe heat pipe 122 is by vaporization and the liquefaction of inner conductive fluid, the heat that can fast led light source 113 be sent, junction temperature on junction temperature on the led light source 113 and the lamppost 112 is delivered to radiating fin group 117, accelerate the heat transfer rate between lamppost 112 and the lamp socket 111, reduce the junction temperature of lamppost 112, prevent the too high damage led light source 113 of junction temperature.
Also be with Fixing clamp-seat 114 on the lamppost 112, Fixing clamp-seat 114 is for to have the column type lid 129 of opening and the integrative-structure that cylinder 130 constitutes by one, and the diameter of column type lid is symmetrically arranged with two " L " type mounting grooves 123 greater than the diameter of cylinder on the cylinder 130.
Be symmetrically arranged with two boss 124 on the cutting ferrule 115, and also be provided with installation aperture 131 on the boss 124, cutting ferrule 115 is fixed on " L " type mounting groove 123 of Fixing clamp-seat 114 by two boss 124.
The high-efficiency heat radiating LED car headlamp of present embodiment also is provided with movable snap ring 116, the external peripheral surface of snap ring 116 is provided with three projectioies 125, three projectioies 125 along external peripheral surface, be 120 degree in twos and distribute, and also be provided with two installing holes 132 on the snap ring 116.
In the process of installing, earlier the draw-in groove that arranges in the auto lamp lampshade with three boss 125 arranging on the snap ring 116 and automobile to be installed blocks and is connected, and then the auto lamp remainder of present embodiment is screwed by the installing hole 131 of setting on the cutting ferrule 115 and the installing hole 132 on the snap ring 116.
Present embodiment high-efficiency heat radiating LED car headlamp is under 28 ℃ the situation in environment temperature, and continuous illumination 2,3,4,5 hours temperature test result are as follows: