CN201764463U

CN201764463U - LED light fixture radiator

Info

Publication number: CN201764463U
Application number: CN2010205372830U
Authority: CN
Inventors: 叶明宝
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-09-21
Filing date: 2010-09-21
Publication date: 2011-03-16
Anticipated expiration: 2020-09-21

Abstract

The utility model discloses an LED light fixture radiator, particularly provides a radiator capable of quickly exporting the heat generated by an LED light source and reducing the temperature rise of the light fixture, the radiator includes a heat conducting plate as the support surface to install the LED, a heat conducting column 2 for conducting the heat to heat conducting fins and the heat conducting fins 3, the heat conducting plate 1 is provided with a plurality of through holes 5 corresponding to the LED light source, the heat conducting column 2 is planted by means of rivet pressing in the through holes or welded on the heat conducting plate being the heat conducting channel for the LED light source, the heat conducting fins 3, arranged on the heat conducting column by penetrating the heat conducting column through the fins, spread the heat into atmosphere. Such a radiator can directly conduct the heat generated by the LED light source to the heat conducting fins, so the heat radiation speed is accelerated, the temperature rise of the heat conducting plate is less than 5 degrees thereby eliminating the influence on the service life of the LED from high temperature; the heat conducting fins are made of aluminum foil and are arranged in parallelly, intervally and superposedly, achieving the advantages of large area of heat radiation, less consumption of metal material and light weight.

Description

A kind of LED lamp radiator

Technical field

The utility model belongs to the LED field of illuminating lamps, relates in particular to the high request occasion to dispelling the heat in the great power LED application, can be used in the light fixtures such as street lamp, Projecting Lamp, Tunnel Lamp.

Background technology

The LED lamp radiator adopts die casting aluminium, stretching aluminium section bar to make mostly at present, also has the combination of the heat-pipe radiator of employing and soaking plate to realize.Low, the Heavy Weight of the former radiating efficiency, latter's radiating efficiency height, composition light fixture complexity.

Patent CN101201155 is a high-power LED street lamp fixture, comprise critical pieces such as light fitting main casing (or being called the light fixture upper shell), lampshade (lower house), LED lamp, power circuit system, comprise on its light fitting main casing that housing, heat pipe connector, LED lamp socket, heat pipe, radiating component constitute, between its heat pipe connector and the LED lamp socket, be provided with and be no less than one or one group of heat pipe.The heat that sends in the time of can shifting out super-high-power LED work rapidly can satisfy the needs that high-power LED lamp dispels the heat effectively, has solved the great power LED cooling technical barrier effectively.

Patent CN101210670 discloses a kind of open type multilayer composite LED heat radiation system, adopt light weight and the good relatively sheet metal of heat-conducting effect is made the duplex heat radiation carrier of open bilayer or multilayer, the upper strata of heat radiation carrier is equipped with relatively large main fin.Interlayer selects for use a plurality of heat pipes with efficient heat-conductive characteristic to link, and the portion of being heated of heat pipe and radiating part are all embedding to be entered in the heat radiation carrier, as far as possible near thermal source and main fin, and with fin that itself and heat radiation carrier is inboard closely fixing.Then directly be fixed on the outer lower portion of heat radiation carrier as the light source of pyrotoxin, form direct thermally equivalent, the quick effectively good circulation of conduction, multistage abundant heat radiation, light emitting sources such as assurance great power LED can be worked under the state of relative low temperature, really bring into play the advantage of aspects such as its service life.

Similarly patent application and patent are more, different separately heat radiation solutions has all been proposed, some technical scheme is very suitable, has obtained a large amount of practical applications, but still has some problems in various degree, such as: fansink designs is not coordinated with led light source, some radiating fins that only evenly distribute, or establish soaking plate and with heat pipe heat is derived, soaking plate is generally thicker could to guarantee the heat transmission, weight is bigger, and radiating effect is general etc.

Summary of the invention

The purpose of this utility model is the radiator that proposes a kind of LED light fixture, solves the defective that prior art exists, and the heat of quick derivation led light source generation, the technological means of minimizing light fixture temperature rise are provided.

The purpose of this utility model will be achieved by the following technical programs:

The radiator of LED light fixture is made up of three parts: have one side the heat-conducting plate 1 that led light source, another side vertically are provided with heating column is installed, at least one heating column 2 and the radiating fin 3 of a slice at least.On the described heat-conducting plate 1 heating column implantation hole 4 is arranged, described each sheet radiating fin 3 is provided with and heating column 2 corresponding to jack hole 5 of implantation hole 4 distributions on heat-conducting plate 1, and the jack hole 5 corresponding heating columns 2 of each radiating fin 3, radiating fin 3 are parallel to each other, keep at a certain distance away and wear Fin and be connected on the heating column 2.

Described heating column 2 is solid cylinders, preferably, adopts cylinder.

Described heating column 2 is hollow cylinders, and described cylinder is the heat conduction heat pipe of internal-filling liquid body medium.

Described heating column 2 distributes corresponding with led light source on heat-conducting plate 1, can be shapes such as single, array.

Described radiating fin 3 is an aluminium foil, set jack hole 5 on it, the diameter of described jack hole 5 is less than the diameter of heating column 2 2mm at least before installation, aluminium foil has good ductility and elasticity, when wearing Fin and install, heating column makes aluminium foil produce plastic deformation, thereby makes their formation thermal conduction path of combining closely, preferably, adopt hydrophilic aluminium sheet.

Described radiating fin 3 is provided with the heat loss through convection hole 6 that is used to form the radiator heat convection channel.

Described radiating fin 3 is an elongate structure, and the cross sectional shape on its minor face or the minor axis direction can be straight line, arc or trapezoidal, preferably, adopt trapezoidal, described trapezoidal base angle angle less than 15 the degree.

Described heat-conducting plate 1 is provided with some and heating column connecting through hole 4, and position of opening is corresponding with the LED thermal source.

Described heat-conducting plate 1 adopts the interconnection technique that presses to be planted in the through hole 4 with heating column 2 or adopts solder technology to be connected, and heating column 2 is corresponding one by one with the LED thermal source.

The material selection high-thermal conductive metal of described heat-conducting plate 1 preferably, adopts aluminium alloy.

The face shaping of described radiator can change according to concrete light fixture, one of preferred is approximate cuboid.

When adopting design lamps of the present invention, according to the possible mounting means of LED light fixture, analyze heat dissipation channel, radiating fin 3 trends of making rational planning for are so that radiating fin 3 constitutes the thermal convection current passages, to strengthen radiating effect.

The technique effect that the present invention gives prominence to is: directly the heat that mounted LEDs light source on the heat-conducting plate produces is transmitted to radiating fin by heating column, radiating rate is fast, the heat-conducting plate temperature rise is spent less than 5, reduces the too high influence to the LED life-span of temperature; Adopt aluminium foil as fin, multi-disc is installed on the heating column at interval, enlarge area of dissipation, metal material consumption less, in light weight, the unit power heatsink weight only has 30g/W.

Below in conjunction with the embodiment accompanying drawing, the specific embodiment of the present utility model is described in further detail, so that technical solutions of the utility model are easier to understand, grasp.

Description of drawings

Fig. 1 is the schematic diagram of the utility model radiator, and 1a is the front view of radiator, and 1b is the A-A profile;

Fig. 2 a is the heat-conducting plate vertical view, and Fig. 2 b is the B-B profile.

Fig. 3 a is the front view of solid cylinder heating column, and Fig. 3 b is the vertical view of solid cylinder heating column, and Fig. 3 c is that front view, its inside of hollow cylinder heating column can be filled with liquid working substance formation heat conduction heat pipe;

Fig. 4 a is the vertical view of radiating fin, and Fig. 4 b is that the cross section is the C-C generalized section of trapezoidal radiating fin, and α is a trapezoidal base angle angle;

Fig. 5 is the modularized limit emitting diode (LED) light fixture schematic diagram that adopts the utility model radiator to constitute,

The 8th, the modularized limit emitting diode (LED) module of employing the utility model radiator, the 9th, the module left installation bracket of LED light fixture, the 10th, the module right mounting bracket of LED light fixture, the 11st, lamp stand.

The specific embodiment

Embodiment 1

As shown in Figure 1, of the present utility model is a kind of heat sink format of LED light fixture, has the heat-conducting plate 1 that simultaneously is used to install the LED light fixture, vertically be provided with at least one heating column 2 on the another side of described heat-conducting plate 1 relative LED installed surface, heating column 2 spread pattern on heat-conducting plate 1 is corresponding with led light source, and described radiator also comprises the radiating fin 3 of a slice at least, described each sheet radiating fin 3 is provided with and the heating column 2 corresponding to jack hole 5 that distributes on heat-conducting plate 1, and the jack hole 5 corresponding heating columns 2 of each radiating fin 3 are parallel to each other, wearing Fin at interval is connected on the heating column 2.As shown in Figure 2, heating column 2 distributes on heat-conducting plate 1 and is array.Heating column 2 is the solids as Fig. 3 a and 3b.Heating column 2 is installed in by pressing on the heat-conducting plate 1, and as the thermal conduction path that led light source produces, the LED 7 that is installed on the radiator heat-conducting plate is corresponding with heating column 2 installation sites.Radiating fin 3 is an aluminium foil, and set jack hole 5 on it, the diameter of described jack hole 5 before not being installed to heating column adopt the ductility that passes Fin technology utilization aluminium flake to be fixed on the heating column less than the diameter of heating column 2.Radiating fin 3 is provided with the heat loss through convection hole 6 that is used to form the radiator heat convection channel.Shown in Fig. 4 a, radiating fin 3 is the laminated structure of elongated rectangular shape, and the cross sectional shape on its short side direction is trapezoidal shown in Fig. 4 b, and trapezoidal base angle is less than 15 degree, and purpose is to constitute the long thermotropism airflow convection of radiator passage to strengthen heat radiation.

Embodiment 2

The structure of present embodiment and embodiment 1 is basic identical, and difference is: heating column 2 employings are the hollow cylinder heat pipe structures shown in Fig. 3 b and 3c.

Embodiment 3

The structure of present embodiment and embodiment 1 is basic identical, and difference is: do not have through hole 4 on the heat-conducting plate 1, heat-conducting plate 1 directly adopts solder technology to be connected with heating column 2.

Embodiment 4

The structure of present embodiment and embodiment 1 is basic identical, and difference is: radiating fin 3 is selected different shapes for use, as in-line or arc.

Claims

1. LED lamp radiator, comprise heat-conducting plate (1), heating column (2) and radiating fin (3), it is characterized in that: heat-conducting plate simultaneously is used to install LED (7) or led module, another side is provided with heating column (2) corresponding with the LED thermal source, vertical plantation relatively, and heating column is provided with the some radiating fins (3) that are parallel to heat-conducting plate.

2. according to the described LED lamp radiator of claim 1, it is characterized in that: be provided with a connecting hole (4) on the described heat-conducting plate at least, described hole arrangement mode is corresponding with led light source.

3. according to the described LED lamp radiator of claim 1, it is characterized in that: described heating column is a solid cylinder.

4. according to the described LED lamp radiator of claim 1, it is characterized in that: described radiating fin is provided with the connecting hole (5) corresponding with heat-conducting plate connecting through hole (4) and some hot-air convection passages to discharge orifice (6), described connecting hole (5) aperture before not being installed on the heating column less than the heating column diameter.

5. according to the described radiating fin of claim 4, it is characterized in that: described radiating fin shape of cross section adopts trapezoidal, arc or yi word pattern.