CN203464209U

CN203464209U - LED head lamp employing air-flow heat-dissipating device for dissipation heat

Info

Publication number: CN203464209U
Application number: CN201320216474.0U
Authority: CN
Inventors: 周路珍
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-04-26
Filing date: 2013-04-26
Publication date: 2014-03-05
Anticipated expiration: 2023-04-26

Abstract

The utility model discloses an LED head lamp employing an air-flow heat-dissipating device for dissipating heat. The central part of the air-flow heat-dissipating device is a flat cavity, and the upper end of the cavity is connected with an air outlet pipe and the lower end of the cavity is connected with an air inlet pipe which is sleeved by a filter-screen cover. A dipped headlight, a headlight on full beams and a sharing auxiliary lamp in the head lamp all employ LED light sources, and respectively carry out heat dissipation through the air-flow heat-dissipating device. The dipped headlight employs a multi-ellipsoid reflector for projection and a convex lens for refraction, and distributes light through a light-shading sheet. The spherical surface of an LED lamp bead directly faces to the surface of the multi-ellipsoid reflector and is located at a near focus. The headlight on full beams employs a multiple-curved-surface reflector for reflection light distribution. The spherical surface of the LED lamp bead directly faces to the surface of the multiple-curved-surface reflector and is located at the focus of the multiple-curved-surface reflector. The sharing auxiliary lamp directly refracts focus light through the convex lens, and the LED lamp bead is located at the focus of the convex lens.

Description

Adopt the LED headlamp of airflow radiating device heat radiation

Technical field

The utility model relates to a kind of LED headlamp that adopts airflow radiating device to dispel the heat.

Background technology

Present most of vehicle is all being used common halogen headlamp, separately there is minority vehicle to use Xenon headlamp, what also have is in the structure of lamp group, to do a little improvement, utilize the optics such as convex lens, speculum to improve the efficiency of light,, all there is the defects such as power consumption is high, the life-span is short in all these.

LED luminous flux is high, and the life-span is long, little power consumption, and the response time is fast, and now existing LED headlamp comes out, yet all runs into the LED light type design difficulty of common power, a difficult problem for high-power LED heat dissipation design difficulty.Existing LED power is increasing, and the design of light type is become different by difficulty relatively gradually, and requires more and more higher to heat dissipation design.In heat dissipation design, have with fan cooling, have with wing fin heat radiation, have with circulating water pipeline system radiating.With fan cooling, lamp body is inevitable to be strengthened thereupon, and energy consumption increases, and cost improves; With the heat radiation of wing fin, special because of moulding, technological requirement is high, and cost is also high; With recirculated water heat radiation, must guarantee that hot channel itself does not absorb water, do not seep water, also necessary positive confinement, otherwise water in pipeline is consumed, and just cannot circulate.

Summary of the invention

First the utility model provides a kind of new heat abstractor, and it utilizes the air rising of will expanding of being heated, and below air can come to supplement immediately, expanded by heating rises again, after supplementing, so move in circles and form the principle of air-flow, the simple airflow radiating device of adopting process dispels the heat.Except ubiquitous air, without other media, without increasing least bit energy consumption, not only convenient but also energy-conservation.Secondly, the utility model relies on the headlamp that the utilization of airflow radiating device is provided all to adopt high-power LED light source, and luminous flux is high, and the life-span is long, little power consumption, and the response time is fast.

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

One, airflow radiating device:

Airflow radiating device is comprised of air flow chamber, escape pipe, air inlet pipe, screen cover.Air flow chamber is a flat cavity body, and its largest face is consistent with LED wiring board conducting strip shape, and its top is connected with escape pipe, and below is connected with air inlet pipe, and air inlet pipe air inlet muzzle has screen cover.Escape pipe and air inlet pipe are plain end pipe, their connection air flow chamber, and other end extends to outside lamp housing.Because pipeline is connected with air flow chamber self seal, pipeline external is connected with lamp body body seal again, so hot and cold air can complete exchange outward at lamp housing, and dust water smoke outside lamp housing does not enter in the lamp body except airflow radiating device itself.Air flow chamber volume should be little unsuitable large, increases or reduce the quantity of pipeline according to the large I of air flow chamber volume.Should widen as far as possible the high low head of gas outlet and air flow chamber, to realize, pull out wind heat extraction effect as chimney.Escape pipe gas outlet should avoid opening, upward forward, gas outlet place can not live wire and so on device.Screen cover is the U-shaped cover that accompanies foamed plastics between double-level-metal net and only open wide a connector, and screen cover entangles air inlet pipe air inlet, and to avoid dust foreign material to be inhaled into, air inlet place should avoid high temperature to occur.

Airflow radiating device operation principle: light is opened, LED wiring board conducting strip is heated and outwards passes to air flow chamber, air expanded by heating in chamber, weight saving is risen and is discharged by escape pipe, below air is entered supplementary by air inlet pipe, the air filling into again expanded by heating rising is discharged, and below air enters supplementary again, has so repeatedly just formed circulating current.And the meritorious official of formation heat extraction circulating current, we will, by the temperature of the continuous rising of its rejecting, not need to increase a little energy consumption by every possible means exactly.

Two, adopt the LED headlamp of airflow radiating device heat radiation

The LED headlamp of employing airflow radiating device described in the utility model heat radiation is by dipped headlights, high beam and share auxiliary lamp three parts and form

(1) dipped headlights

Dipped headlights front end is convex lens, and middle upper rear end is many ellipsoidal reflectors, and middle part is the wiring board that is connected with driving and LED lamp pearl, and middle and lower part is conducting strip and airflow radiating device.

The all directions of the light meeting directive that common Halogen lamp LED and xenon lamp light source send except base, and LED lamp pearl only has ball half, so as long as many ellipsoidal reflectors have top half.Many ellipsoidal reflectors have two focuses, LED lamp pearl lies in upward apart from the nearer focus of reflecting surface, the light beam that light source sends can focus in another one focus by ellipsoidal reflector reflection, and this focus focus of convex lens exactly, light is by the refraction of convex lens, form directional light and irradiate to dead ahead, anti-dazzling screen is placed by our side under the focus place of convex lens, just reaches the object that forms "cut-off"line.

(2) high beam and share auxiliary lamp:

High beam and auxiliary lamp are because share an airflow radiating device, and small one and large one is on same axial line.High beam rear end is opening multi-surface reflector forward, and on the other side is to be connected with to drive and wiring board, the conducting strip of LED lamp pearl and the airflow radiating device share with auxiliary lamp successively, and pearl is placed in the focus of multi-surface reflector LED lamp.

Share auxiliary lamp in the dead ahead of high beam, what pasting that shared airflow radiating device settles successively is auxiliary lamp conducting strip, be connected with and drive and wiring board, the convex lens of LED lamp pearl.Pearl is placed in the focus of convex lens LED lamp forward.Directly refraction is luminous by convex lens to share auxiliary lamp, and light is concentrated, and hot spot is little.It had both belonged to high beam, belonged to again dipped headlights, and its can be bright during switch-on distance light, and during switch-on dim light, it also can be bright.It is sighted is that central point HV is to this region between bottom-right 75R and 50R.Because high beam adopts multi-surface reflector, irradiation has been subjected to effective control to upper left light, again owing to share blocking of auxiliary lamp, reduced again a part of irradiation to upper left light, add that the little and light of hot spot concentrates share auxiliary lamp only irradiate to central point to lower right this region, so, can not make the other side personnel feel dazzling.

The beneficial effects of the utility model are:

One, the simple airflow radiating device of adopting process dispels the heat, except ubiquitous air, without other media, without least bit energy consumption, not only convenient but also energy-conservation;

Two, rely on the application to airflow radiating device and LED technology, can provide luminous flux high, the life-span is long, and little power consumption does not make the other side personnel feel dazzling car headlamp

Accompanying drawing explanation

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

Fig. 1 is airflow radiating device side cutaway view of the present utility model.

Fig. 2 is airflow radiating device heat dissipating state schematic diagram of the present utility model.

Fig. 3 is dipped headlights side cutaway view of the present utility model.

Fig. 4 is dipped headlights light operation conditions schematic diagram of the present utility model.

Fig. 5 is high beam of the present utility model and share auxiliary lamp side cutaway view.

Fig. 6 is high beam of the present utility model and share auxiliary lamp light operation conditions schematic diagram.

In figure, 1, air flow chamber, 2, escape pipe, 3, air inlet pipe, 4, screen cover, 5, many ellipsoidal reflectors, 6, dipped headlights LED lamp pearl, 7, dipped headlights conducting strip, 8, anti-dazzling screen, 9, dipped headlights wiring board, 10, dipped headlights convex lens, 11, multi-surface reflector, 12, high beam LED lamp pearl, 13, high beam conducting strip, 14, large lamp housing, 15, framework, 16, high beam wiring board, 17, share Assembled lamp conducting strip, 18, share Assembled lamp LED lamp pearl, 19, share combination lamp driver plate, 20, share auxiliary lamp convex lens

The specific embodiment

In Fig. 1, air flow chamber 1 is a flat cavity body, and its top is connected with escape pipe 2, and below is connected with admission line 3, the exit of screen pack 4 socket admission lines 3.Air flow chamber 1 as required upright, inclination Huo Heng Lying is settled.

As shown in Figure 2, after light is opened, LED wiring board conducting strip is heated and outwards passes to air flow chamber, air expanded by heating in chamber, weight saving is risen and is discharged by escape pipe, and below air is entered supplementary by air inlet pipe, and the air filling into again expanded by heating rising is discharged, below air enters supplementary again, has so repeatedly just formed circulating current.

In Fig. 3, Fig. 4 example, the convex lens 10 that are connected with many ellipsoidal reflectors 5 of face down are settled forward, air flow chamber 1 is laterally placed in the back lower place of many ellipsoidal reflectors 5, and dipped headlights conducting strip 7, dipped headlights wiring board 9 are fitted and connected the side upward in air flow chamber 1 from lower to upper successively.Many ellipsoidal reflectors 5 have two focuses, and dipped headlights lamp pearl 6 is in one of many ellipsoidal reflectors 5 apart from the nearer focus of minute surface.The light beam that light source sends can focus in another one focus 21 by many ellipsoidal reflector 5 reflections, and this focus 21 is also exactly the focus of convex lens 10, light through overfocus 21 passes through the refraction of convex lens 10, forming directional light irradiates to dead ahead, we place anti-dazzling screen 8 below among focus 21, just reach the object that forms "cut-off"line.

In Fig. 5, Fig. 6 example illustrated, thirty years of age placed in the middle by framework 15 of airflow radiating device, multi-surface reflector 11 is connected on framework 15 back to front, high beam conducting strip 13, high beam wiring board 16 are fitted and connected successively on the cavity of the air flow chamber 1 towards speculum 11 1 sides, and high beam pearl 12 is towards speculum 11 and be in the focus of speculum 11.

Combination auxiliary lamp conducting strip 17, combination auxiliary lamp wiring board 19 are fitted and connected in air-flow cavity body 1 successively towards combination auxiliary lamp convex lens 20 1 sides, and combination auxiliary lamp LED lamp pearl 18 is in the focus of combination auxiliary lamp convex lens 20.

Claims

1. a LED headlamp that adopts airflow radiating device heat radiation, is characterized in that: the dipped headlights in headlamp, high beam and share auxiliary lamp and all adopt LED light source, all adopt airflow radiating device to dispel the heat.

2. the LED headlamp of employing airflow radiating device heat radiation according to claim 1, is characterized in that: airflow radiating device core is a flat cavity body, and its upper end is connected with escape pipe, and lower end is connected with the air inlet pipe of overlapping screen cover.

3. the LED headlamp of employing airflow radiating device heat radiation according to claim 1, is characterized in that: dipped headlights adopts many ellipsoidal reflector projections and convex lens refraction, and by anti-dazzling screen luminous intensity distribution; LED lamp pearl sphere is over against many ellipsoidal reflectors face and be in from it in a focus close to.

4. the LED headlamp of employing airflow radiating device according to claim 1 heat radiation, is characterized in that: high beam adopts multi-surface reflector reflecting and light distributing, and LED lamp pearl sphere is over against many ellipsoidal reflectors face and be in its focus.

5. the LED headlamp of employing airflow radiating device heat radiation according to claim 1, is characterized in that: share auxiliary lamp and directly reflect optically focused by convex lens, pearl is in the focus of convex lens LED lamp.