CN201180974Y

CN201180974Y - High power LED lighting device

Info

Publication number: CN201180974Y
Application number: CNU2008201041780U
Authority: CN
Inventors: 龙国庆
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-04-08
Filing date: 2008-04-08
Publication date: 2009-01-14
Anticipated expiration: 2018-04-08

Abstract

A high-power LED lighting lamp comprises a lamp cover and an LED light source; a radiator which is mainly composed of radiating fins, a radiating plate, a thermal connecting plate and a thermotube is arranged at the upper part of the lamp cover; the radiating fins are arranged on the outer side of the lamp cover; the radiating plate is arranged on the inner side of the lamp cover and connected in close fit with the lamp cover to form a whole; the condensing end of the thermotube is fixedly connected with the radiating plate in a close fit manner; the evaporating end of the thermotube is fixedly connected with the thermal collecting plate arranged under the lamp cover in a close fit manner; the LED light source is mounted under the thermal collecting plate directly or through a mounting plate; the radiating fins and the radiating plate of the radiator, and the lamp cover are cast into a whole; or the radiating fins and the radiating plate of the radiator are in a separated structure and closely connected with the lamp cover to form a whole; the thermotube of the radiator is composed of a tube shell, and an imbibing core and a working substance which are arranged on the inner wall of the tube shell and made of capillary porous materials; the inside of the thermotube is in a vacuum state. The lighting lamp has the advantages of good radiating effect, long service life, small volume, convenient installation and beautiful appearance, and represents the most economical and practical lighting lamp in public places.

Description

A kind of high-power LED lighting fixture

Technical field:

The utility model relates to a kind of lighting, particularly a kind of high-power LED lighting fixture with heat abstractor.

Background technology:

At present illuminative high-power LED lamp ubiquity dispels the heat the serious light decay of bad generation and influences the problem in the life-span of lamp, all fail to develop practical for a long time, the heat dissipating method of high-power illumination lamp, the employing fan that has dispels the heat and satisfies high-powered LED lamp heat radiation requirement, there is tangible technological deficiency in this method, because the basic life-span of LED lamp is 50000 hours, the life-span of fan is difficult to satisfy so long-time needs, in case fan cisco unity malfunction, high-powered LED lamp will damage, and the consumption that fan assembly has increased the energy again is set, will causes the waste of the energy like this.The another kind of method that adopts is at present: the LED lamp of tens up to a hundred 1W is distributed in the bulky utensil, make high-power LED lamp with the method, the light fixture volume is too huge, not only waste material increases manufacturing cost, and be not easy to transportation and installation, and also be unfavorable for esthetic requirement, the more important thing is the method for this dispersed placement illuminator, the optically focused of light fixture is poor, and fault rate is higher.

Patent announcement number for the utility model patent of CN2750186 " street lamp of tool heat radiation function " the LED lamp directly or be installed in by a fin on the lampshade of band radiating fin, but because thermal source is limit with the contact area of heat radiation lampshade, the heat of LED lamp generation in time can not be passed to radiating fin, thereby its radiating effect is still not ideal enough.

The utility model content:

The technical problems to be solved in the utility model: provide a kind of radiating effect better high-power LED lighting fixture.

The technical scheme that solves the problems of the technologies described above is: a kind of high-power LED lighting fixture, comprise that radiator is arranged at lampshade, led light source, lampshade top, described radiator comprises radiating fin, heat sink, thermal-arrest plate and heat pipe, radiating fin is positioned at the lampshade outside, heat sink is positioned at inboard the closely cooperating with lampshade of lampshade and fuses, the condensation end of this heat pipe and heat sink with the mode of closely cooperating fixedly connected, its evaporation ends fixedlys connected in the mode of closely cooperating with the thermal-arrest plate that is positioned at the lampshade below, led light source or directly or by installing plate be installed in thermal-arrest plate below.

Further technical scheme of the present utility model is: the radiating fin of described radiator is positioned at the lampshade top outer or is integral with the lampshade monoblock cast, or closely links into an integrated entity for isolating construction and lampshade;

Described heat sink is positioned at lampshade inside top and lampshade and is cast as one or fixedly fuses for isolating construction and lampshade closely cooperate.

Owing to adopted technique scheme, a kind of high-power LED lighting fixture of the utility model has following beneficial effect:

1, good heat dissipation effect, the light fixture long service life: a kind of high-power LED lighting fixture of the utility model has made full use of a kind of high-temperature superconductive element---the characteristic of heat pipe, above lampshade or the side be provided with the radiator that comprises that mainly radiating fin and heat pipe constitute, the condensation end of this heat pipe is fixedlyed connected with radiating fin by heat sink, its evaporation ends is fixedlyed connected with the thermal-arrest plate that is positioned at the lampshade below, led light source directly or by installing plate is installed in thermal-arrest plate below, this super heat-conductive pipe can pass to the heat of LED lamp fast in the radiator of being made up of radiating fin and distribute as early as possible, thereby has avoided the LED lamp because the overheated light decay phenomenon that occurs; Secondly, lampshade has been used the principle that cold and hot air forms convection current, and another that the LED lamp is produced partly heat discharged, and has more effectively prevented that the LED lamp is overheated.

2, the high-powered LED lamp of the utility model, volume is little, easy for installation, and the radiator that connects illuminator can be installed on the difform lampshade.

3, the utility model high-powered LED lamp, technical pattern is reasonable, good looking appearance.

Because above advantage, a kind of high-power LED lighting fixture of the utility model is the illuminating product of the most economical practicalities in public place such as road, bridge, tunnel, airport, square, workshop as a kind of not only energy-conservation, but also illuminations attractive in appearance and that the life-span is long.

Be described further below in conjunction with the technical characterictic of drawings and Examples a kind of high-power LED lighting fixture of the utility model:

Description of drawings:

Fig. 1～Fig. 2: a kind of high-power LED lighting fixture structural representation of the utility model:

Fig. 1-front view, Fig. 2-vertical view;

Fig. 3～Fig. 6: the heat pipe structure of radiator and scheme of installation:

Fig. 3-upward view, Fig. 4-front view, Fig. 5-left view,

The back cutaway view amplifies in the A portion of Fig. 6-Fig. 4.

Among the figure:

The 1-lampshade, the lamp stand installing hole on the 11-lampshade, 2-reflector, 3-heat pipe, 3L-heat pipe condensation end, 3Z-heat pipe evaporation ends, 31-heat pipe package, 32-imbibition core, the working medium of 33-vacuum state; The 4-heat sink, 5-radiating fin, 6-thermal-arrest plate, 7-LED light source.

The specific embodiment:

A kind of high-power LED lighting fixture, as Fig. 1～shown in Figure 2, this LED lighting comprises lampshade 1, led light source 7 and main by radiating fin 5 and 4 radiators that heat pipe 3 constitutes, radiating fin 5 is positioned at lampshade 1 upper outside and is integral with the lampshade monoblock cast, heat sink 4 is positioned at lampshade 1 upper inner and the lampshade monoblock cast is integral, the U font that is shaped as traverse of the every heat pipe 3 of radiator, two straight flanges of U font are respectively condensation end or evaporation ends, straight flange as condensation end 3L is long slightly, tight fit connection with it in the installing hole of the condensation end 3L insertion heat sink 4 of each heat pipe 3, the installing hole that its evaporation ends 3Z inserts the thermal-arrest plate 6 be positioned at lampshade below tight fit with it connects (referring to Fig. 3～Fig. 6, the heat pipe structure of radiator and scheme of installation), led light source 7 usefulness screws directly are fixedly mounted on thermal-arrest plate 6 belows, and described lampshade 1 is provided with lamp stand installing hole 11.

The heat pipe 3 of described radiator by shell 31, be positioned at inner wall of tube shell and form by imbibition core 32 and working medium 33 that the capillary porous material constitutes, be in vacuum state (referring to Fig. 6) in the heat pipe pipe.This product is the disclosed matured product of utility model patent " " a kind of heat pipe " patent No.: ZL200620099542X ", and its concrete structure repeats no more.

It more than is one of preferred forms of the present utility model.

As a kind of conversion of the utility model embodiment, the radiating fin 5 of described radiator, heat sink 4, lampshade 1 also can be respectively isolating construction, are installed in the top or the outside, side of lampshade after radiating fin 5 is made separately, closely fuse with lampshade; Being installed in the lampshade inboard after heat sink 4 is made separately fixedlys connected by screw with lampshade;

A kind of conversion as the utility model embodiment, the radical of described heat pipe 3 can increase or reduce, its shape also can change, during use, need only with the condensation end of this heat pipe 3 and heat sink 4 with the mode of closely cooperating fixedly connected, its evaporation ends 3Z fixedlys connected in the mode of closely cooperating with the thermal-arrest plate 6 that is positioned at the lampshade below and gets final product.

As a kind of conversion of the utility model embodiment, described led light source 7 also can be fixedly mounted on thermal-arrest plate below by connecting plate or other connected modes (such as bonding, welding, riveted joint etc.) are installed.

Claims

1. high-power LED lighting fixture, comprise lampshade, led light source, radiator is arranged at lampshade top, it is characterized in that: described radiator comprises radiating fin (5), heat sink (4), thermal-arrest plate (6) and heat pipe (3), radiating fin (5) is positioned at the lampshade outside, heat sink (4) is positioned at inboard the closely cooperating with lampshade of lampshade (1) and fuses, the condensation end of this heat pipe (3) is fixedlyed connected in the mode of closely cooperating with heat sink (4), its evaporation ends (3Z) is fixedlyed connected in the mode of closely cooperating with the thermal-arrest plate (6) that is positioned at lampshade below, led light source (7) or directly or by installing plate be installed in thermal-arrest plate (6) below.

2. a kind of high-power LED lighting fixture according to claim 1, it is characterized in that: the U font that is shaped as traverse of the heat pipe of described radiator (3), two straight flanges of U font are respectively condensation end or evaporation ends, wherein, straight flange as condensation end is long slightly, the condensation end (3L) of each heat pipe (3) inserts tight fit connection with it in the installing hole that tight fit connects with it, its evaporation ends (3Z) inserts thermal-arrest plate (6) in the installing hole of heat sink (4), and led light source (7) is directly installed on thermal-arrest plate below.

3. a kind of high-power LED lighting fixture according to claim 1 and 2 is characterized in that: the radiating fin of described radiator is positioned at the lampshade top outer, is integral with the lampshade monoblock cast.

4. a kind of high-power LED lighting fixture according to claim 1 and 2 is characterized in that: the radiating fin of described radiator is an isolating construction, is positioned at the lampshade top, closely links into an integrated entity with lampshade.

5. a kind of high-power LED lighting fixture according to claim 1 and 2 is characterized in that: described heat sink is positioned at the lampshade inside top or is cast as one with lampshade or fixedly fuses for isolating construction and lampshade closely cooperate.

6. a kind of high-power LED lighting fixture according to claim 1 and 2 is characterized in that: described lampshade is provided with lamp stand installing hole (11).