CN201696944U

CN201696944U - High-power LED spot lamp

Info

Publication number: CN201696944U
Application number: CN2010202369179U
Authority: CN
Inventors: 诸建平; 吴祖通; 汪文良
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-06-23
Filing date: 2010-06-23
Publication date: 2011-01-05
Anticipated expiration: 2020-06-23

Abstract

A high-power LED spot lamp comprises a high-power LED light source and a heat dissipating housing, wherein the high-power LED light source is fixed on a baseplate which is fixed in the central through hole of the heat dissipating housing, and a drive power supply and the through hole are separated through a separation sheet. The utility model has the benefits as follows: as the heat dissipating housing is formed at one time through aluminum alloy extrusion, the high-power LED spot lamp has the advantages of large heat dissipating area, high efficiency, low cost, light structure and the like; the heat quantity is quickly transmitted to the heat dissipating housing by the LED light source on the baseplate and is efficiently emitted by radiating fins. The drive power supply and the through hole of the heat dissipating housing are mutually separated to form a closed space respectively, so as to not only effectively prevent the entering of dust and steam, but also prevent the heat quantity in the through hole of the heat dissipating housing from influencing the drive power supply and prolong the service life of the drive power supply.

Description

A kind of great power LED shot-light

Relate to the field

The utility model relates to a kind of ligthing paraphernalia, and especially a kind of is light source with light emitting diode (LED), has excellent heat dispersion performance, drives luminous shot-light with constant-current supply.

Background technology

Light emitting diode (LED) as internationally recognized the 4th generation green illumination light source, have energy-saving and environmental protection, an advantage such as the life-span is long, light efficiency is high, radiationless, shock resistance, in today of global energy growing tension, and get most of the attention.But in the use of reality, problems such as the heat radiation of LED light fixture, cost height are restricting the large-scale application of LED always and are popularizing, heat dissipation problem especially, and this is directly connected to the performances such as brightness, light decay, stability, service life of LED light fixture.

At present, for solving the heat dissipation problem of LED, domestic many producers and engineers and technicians have done deep research on the one hand at this.Wherein, a kind of heat dissipation LED shot-light (see figure 1) is disclosed in patent publication No. is the document of CN201439876U, include lamp body (1), it is characterized in that: circuit board (3) and lens cap (4), middle part that lamp body (1) front end face is provided with mounting platform (2) applying installation LED illuminator form installation chamber (11) installation voltage driver (5), rear end face is provided with power supply lid (6), is being provided with along the axle center radially radial radiating fin (12) the outer wall week of lamp body (1).Wherein, radiating fin (12) leading section extended axially in lens cap (4) outer wall week, and lamp body (1) is aluminium alloy or heat radiation pottery, and the free end of each radiating fin (12) is reversed into arc simultaneously forward or backwards along the axle center.Obviously, in this patent, LED is embedded in the interior wick column of lampshade, and is luminous by the driving power driving LED in the lamp socket.On radiating treatment, be by with LED by jointing plate with the heat transferred heat-dissipating casing, thereby the heat of great power LED is derived, reduce the light fixture optical attenuation.

But in above-mentioned patent, because heat-dissipating casing adopts die casting aluminium technology, that radiating fin can't be made is slimmer and more graceful, so cause the weight of heat-dissipating casing heavier, and shortcoming such as the heat of LED can't pass to heat-dissipating casing fast, and radiating efficiency is low.Driving power is airtight to be installed in the hole of heat-dissipating casing, also will have influence on the heat radiation of driving power, and the power supply heat can't be gone out by quick heat radiating, thereby has influence on the service life of driving power.Simultaneously, because complex structure, heat-dissipating casing needs mold developing to come die cast, causes the light fixture manufacture craft loaded down with trivial details, and product cost is higher.

The utility model content

At the deficiency that above-mentioned prior art exists, the utility model provides a kind of weight slim and graceful, simple in structure, has the New LED shot-light of excellent heat dispersion performance, long life simultaneously.

To achieve these goals, technical solution adopted in the utility model is:

A kind of great power LED shot-light includes led light source, heat-dissipating casing, and described great power LED is fixed on the substrate, and substrate is fastened in the center through hole of heat-dissipating casing, isolates by spacer between driving power and the through hole.

One end surfaces of described heat-dissipating casing is fixed with annular or the longitudinal section is flaring face shield.

Described face shield planar portions surface is provided with air vent.

The lens mutual superposition of described face shield and led light source top is placed, and led light source is anchored on the substrate.

Described heat-dissipating casing adopts aluminium alloy extruded moulding.

The beneficial effects of the utility model: heat-dissipating casing is aluminium alloy extruded one-shot forming, not only area of dissipation is big, efficient is high, also have with low cost, advantage such as structure is slim and graceful, LED on the substrate is delivered to heat-dissipating casing fast with heat, efficiently heat is distributed by fin.The through hole of driving power and heat-dissipating casing is isolated mutually, forms confined space respectively, not only can prevent effectively that dust, steam etc. from entering wherein, and can prevent that driving power is subjected to the influence of heat in the heat-dissipating casing through hole, improves service life.The utlity model has excellent performance, rational in infrastructure, the characteristics that technology is succinct are convenient to mass processing and production.

Description of drawings

Fig. 1 is the three-dimensional exploded view of an embodiment of the prior art;

Fig. 2 is the schematic perspective view of a preferred embodiment of the present utility model;

Fig. 3 is the vertical view of a preferred embodiment of the present utility model;

Fig. 4 is the cutaway view of a preferred embodiment A-A direction of the present utility model;

Fig. 5 is the cutaway view of another preferred embodiment of the present utility model;

The specific embodiment

As shown in Figure 2, be the schematic perspective view of the utility model one preferred embodiment.From figure, we as can be seen, the outer appearnce of this example is similar to traditional shot-light.Heat-dissipating casing a6 is metal or alloy such as copper, aluminium, or other highly heat-conductive material extrusion modling, and monnolithic case can be cylinder, prism or other shapes.Surface distributed at heat-dissipating casing a6 has fin a61, to increase area of dissipation, improves radiating effect.

In the forming process of fin a61, can adopt the lower end thick, the transmission that the thin structure in upper end improves heat; Simultaneously, can also be made into uneven, striped, to increase the contact area of fin a61 and air, to improve radiating efficiency on the surface of fin a61.

As Fig. 2, face shield a2 is fixed in the end of heat-dissipating casing a6, is manufactured with air vent a21 on the planar portions surface of face shield a2, and air vent a21 is bar shaped, circle or other erose through holes, to increase the cross-ventilation up and down of fin a61.Centre at face shield a2 is fixed with light-passing board a1, enters into shot-light inside to prevent foreign matter such as dust, moth or insect, can play protective action simultaneously.

Light-passing board a1 generally adopts glass, plastic or other material to make, and on the one hand, can light transmission better, the light losing that sees through be less; On the other hand, have stronger hardness, can play certain protective action lamp interior.

At the other end with respect to face shield a2, be fixed with bonnet a9 on the heat-dissipating casing a6, bonnet a9 is that insulating materials is made, and the driving power in the bonnet is carried out electrical isolation, contact pin a81 directly links to each other with driving power, is connected with the lamp socket of outside by contact pin a81 again.

Fig. 3 is the vertical view of present embodiment, and heat-dissipating casing a6 is fixed with bonnet a9, is provided with louvre a91 in the outside of bonnet a9, is used for the heat radiation of driving power in the bonnet a9.Louvre a91 is strip, circle shape, or other shapes, and its quantity can be regulated according to the needs of heat radiation.

Face shield a2 is fixed on the front end of heat-dissipating casing a6, and its diameter protrudes in face shield a2 greater than fin a61 to prevent fin a61, influences the shot-light overall appearance.The louvre a91 of face shield a2 is positioned at the below of fin a61, can effectively increase the fin a61 convection current of air up and down.Because size, the shape of louvre a91 can be not quite similar, so the quantity and spacing of louvre a91 can adjust as required, to satisfy radiating requirements.

Fig. 4 is the profile of present embodiment A-A direction, and led light source a3 is fixed on the substrate a5 by screw a4.Wherein, led light source a3 is single-chip package or the integrated encapsulation of multicore, and the wavelength of light source can be visible or black light wave band, or mixed light.Substrate a5 is that materials such as metal, alloy or pottery are made, and has good thermal conductivity.In the center through hole of substrate a5 by the fastening heat-dissipating casing a6 of the principle of expanding with heat and contract with cold, make the tight contact between substrate a5 and the heat-dissipating casing a6.Simultaneously, in both contact slits, be filled with Heat Conduction Material,, improve heat transfer efficiency to increase both contacts area.

Above around the led light source a3, be fixed with the cross section and be

Face shield a2.Wherein, polishing or coating film treatment have been carried out in the chamfered portion inboard of lower end, can improve the smoothness on surface, increase reflecting effect.Planar section in the upper end is positioned at the surface of heat-dissipating casing a6, with the light-passing board a1 that is fixed in face shield a2 center, both in conjunction with after play protection and effect attractive in appearance.

The center through hole other end at heat-dissipating casing a6 is fixed with spacer a7, to isolate mutually between driving power a8 and the through hole, but lead links to each other between driving power a8 and the led light source a3, driving power a8 surface is fixed with contact pin a81, integral body is positioned at bonnet a9 inside, makes driving power a8 be positioned at the space of bonnet a9 and spacer a7 composition.

Fig. 5 is the profile of another preferred embodiment of the utility model, we can know from figure, face shield a2 is the structure of an annular, wherein the through hole of face shield a2 is buckled on the lens a10, lens a10 tightly is fitted in led light source a3 on the substrate a5, just, led light source a3 is fastened on the substrate a5 by the lens a10 mutual superposition of face shield a2 and led light source a3 top.

Can when guaranteeing led light source a3 and substrate a5 contacts high efficiency and heat radiation, also can effectively reduce the technological process in the installation process like this, enhance productivity, reduce cost.

Above embodiment only is a preferred version of the present utility model, and other any simple or surperficial changes are all in protection domain of the present utility model.

Claims

1. great power LED shot-light, include led light source (a3), heat-dissipating casing (a6), it is characterized in that described high-power LED light source (a3) is fixed on the substrate (a5), substrate (a5) is fastened in the center through hole of heat-dissipating casing (a6), isolates by spacer (a7) between driving power (a8) and the through hole.

2. according to claims 1 described a kind of great power LED shot-light, an end surfaces that it is characterized in that described heat-dissipating casing (a7) is fixed with annular or the longitudinal section is flaring face shield (a2).

3. according to claims 2 described a kind of great power LED shot-lights, it is characterized in that described face shield (a2) planar portions surface is provided with air vent (a21).

4. according to claims 2 or 3 described a kind of great power LED shot-lights, it is characterized in that lens (a10) mutual superposition of described face shield (a2) and led light source (a3) top is placed, led light source (a3) is anchored on the substrate (a5).

5. according to claims 4 described a kind of great power LED shot-lights, it is characterized in that described heat-dissipating casing (a6) adopts aluminium alloy extruded moulding.