CN101713530B

CN101713530B - LED lamp with radiating structure

Info

Publication number: CN101713530B
Application number: CN2009102260430A
Authority: CN
Inventors: 朱松发
Original assignee: HUABO TECH (ZHUHAI) INDUSTRY Co Ltd
Current assignee: HUABO TECH (ZHUHAI) INDUSTRY Co Ltd
Priority date: 2009-11-13
Filing date: 2009-11-13
Publication date: 2011-04-13
Anticipated expiration: 2029-11-13
Also published as: CN101713530A; HK1143849A1

Abstract

The invention relates to a light emitting diode (LED) lamp with a radiating structure, comprising a radiator, a printed circuit board (PCB)and an LED light source arranged on the PCB. The radiator comprises a radiating base and a plurality of radiating posts distributed on the surface of the radiating base; the inner parts of the radiating posts are provided with hollow cavities; a heat conducting unit is arranged between the PCB and the radiator; the heat conducting unit is provided with heat conducting posts which can be inserted into the hollow cavities; and the heat conducting posts are contacted with the cavity wall of the hollow cavities. Because the heat conducting posts can be inserted into the inner part of the hollow cavities and are contacted with the cavity wall of the hollow cavities, the heat released by the LED light source on the PCB plate can be fast conducted to the radiator, and the heat can be fast radiated through the surface of the radiating posts, thereby reducing the temperature of the entire LED lamp, and prolonging the service life of the LED lamp. In addition, by adopting the rhombohedral radiating posts, natural wind can flow in any directions, and the heat can be fast taken away.

Description

LED lamp with radiator structure

Technical field

The present invention relates to a kind of LED lamp, especially a kind of LED lamp with radiator structure.

Background technology

The ratio that LED high power street lamp accounts for city illumination at present increases day by day, although its energy-conservation characteristics as everyone knows, but also constantly improve in the industry in the face of its heat dissipation problem, after the heart channel of Hang-Shaoyin is lighted in the led light source, instantaneous temperature is very high, if can not go out thermal conductance at short notice, even area of dissipation enough greatly also can't reduce the temperature at center.

In addition, the pcb board of LED high power street lamp on the market is commonly aluminum plate at present, but the conducting effect of aluminium is not very good, thereby heat can't be taken away to different directions, can't reduce the temperature at led light source center in the short time.If adopt the fin type radiator structure to dispel the heat, need to expose effect better because of it, but the street lamp environment can only flow the flow direction of wind at both direction, and outward appearance can be visual in addition, the aesthetic feeling deficiency, and shortcoming such as moulding is limited is obvious.

Summary of the invention

The LED lamp that the purpose of this invention is to provide a kind of good heat dissipation effect.

For achieving the above object, the invention provides a kind of LED lamp with radiator structure, comprise radiator, pcb board and be arranged at led light source on the pcb board, described radiator has comprised cooling base and has been distributed in the some thermal columns on this cooling base surface, described thermal column inside has cavity, be provided with heat-conducting unit between described pcb board and the radiator, described heat-conducting unit has the heating column that can insert described cavity, and described heating column contacts with the chamber wall of described cavity.

Further, described heat-conducting unit also comprised and pasted the heat conduction bar that is fixed in described pcb board, and the center of described led light source contacts with described heat conduction bar, and described heat conduction bar contacts with described heating column.Preferably, described heating column takes the shape of the letter U.In being preferably, establishes described heating column the heat pipe of liquid.Described heat conduction bar and heat pipe are preferably copper fitting.

Preferably, the cross section of described thermal column can be rhombus, triangle or pentagon etc.

Preferably, described cooling base and thermal column are structure as a whole.

Preferably, described cooling base and thermal column are alumiaum article.

Preferably, described LED lamp is provided with two power supply adaptors.

Preferably, described pcb board is a copper plates, has better heat-transfer effect than traditional aluminum pcb board.

Compared with prior art, the present invention has the following advantages and beneficial effect:

1. because heating column can insert the cavity of thermal column inside, and contact with the chamber wall of cavity, therefore the heat that the led light source on the pcb board discharges can be conducted to radiator rapidly, and dispel the heat rapidly by the surface of thermal column, thereby reduced the bulk temperature of LED lamp, prolonged the service life of LED lamp.

2. owing to adopt the rhombus thermal column, natural wind is flowed in any direction, heat can be taken away rapidly.

3. owing to the center with led light source contacts with the heat conduction bar, make the heat conduction faster.

4. be provided with two power supply adaptors owing to this LED lamp, when one of them can not be worked, the work of can automaticallying switch.

5, because pcb board adopts copper plates, therefore has better heat-transfer effect than traditional aluminum pcb board.

Description of drawings

Fig. 1 is the parts explosion of a kind of embodiment of the present invention.

Fig. 2 is the vertical view of assembled state embodiment illustrated in fig. 1.

Fig. 3 is the A-A cutaway view of Fig. 2.

Fig. 4 is the structural representation of the radiator in the middle of embodiment illustrated in fig. 1.

Fig. 5 is the matching relationship schematic diagram of pcb board, heat conduction bar and heating column and radiator in the middle of embodiment illustrated in fig. 1.

The specific embodiment

Fig. 1 shows a kind of embodiment of the present invention, and the LED lamp of this embodiment has comprised light fixture loam cake 1 and light fixture lower cover 2, is connected to form the shell of this LED lamp between light fixture loam cake 1 and the light fixture lower cover 2 by screw.Be provided with radiator 3, pcb board 4, heat conduction bar 5, heating column 6, reflecting piece 7, lampshade 8, sealing ring 9, retainer ring 10 and power supply adaptor 13 etc. in this shell, radiator 3 can utilize lamp stand fixture 11 to be fixed on the lamp stand 12.Retainer ring 10 and radiator 3 are connected by screw, and lampshade 8 is fixed between radiator 3 and the retainer ring 10, and sealing ring 9 places the periphery of lampshade 8, and this lampshade 8 can adopt safety glass etc. to make.

Described radiator 3 preferably by radiating effect preferably aluminium make, this radiator 3 has comprised cooling base 31 and has been distributed in the some thermal columns 32 of this cooling base 31 outer surfaces that the inside of every thermal column 32 all has cavity 321; Cooling base 31 can be structure as a whole with thermal column 32, and the inboard of cooling base 31 is provided with some reference columns 33.The cross section of described thermal column 32 is preferably rhombus, adopts the thermal column of this shape that natural wind energy is flowed in any direction, thereby heat is taken away rapidly.

Described pcb board 4 mainly is made of copper, and it has better heat-transfer effect than traditional aluminum pcb board.In the present embodiment, pcb board 4 is provided with polylith, and every pcb board 4 is connected and fixed on the reference column 33 of cooling base 31 inboards by connectors such as for example screws respectively, and reflecting piece 7 also is to be connected and fixed on the reference column 33 by connectors such as for example screws.The front of every pcb board 4 is welded with several led light sources 14, and the outside of each led light source 14 is provided with lens 15, with increase secondary light efficiency,

Described heating column 6 is provided with many, and every heating column 6 is the hollow heating column of U-shaped, establishes the heat pipe of liquid in promptly.Two terminals of every heating column 6 can insert the cavity 321 of described thermal column 32 inside respectively, and contact with the chamber wall of cavity 321; The bottom of heating column 6 then contacts with heat conduction bar 5 close adhesion.Heat conduction bar 5 is connected with pcb board 4 with several screws through high-heat-conductivity glue, links to each other to paste the back side of being fixed in described pcb board 4, between heat conduction bar 5 and the pcb board 4.Described heat conduction bar 5 and heating column 6 preferably by heat-conducting effect preferably copper become.The center of the led light source on the pcb board 4 14 is contacted with heat conduction bar 5, heat conduction bar 5 contacts with heating column 6, and heating column 6 contacts with thermal column 32, like this, heat conduction bar 5 and heating column 6 just conduct to thermal column 32 rapidly with the heat that led light source 14 discharges, dispel the heat rapidly by the surface of thermal column 32 then, thereby reduced the bulk temperature of LED lamp, prolonged the service life of LED lamp.

Only be preferred implementation of the present invention below, should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement and do not exceed protection scope of the present invention.For example, in other embodiments, described shell can omit and radiator is exposed use, thereby has more flexibility on appearance and modeling; Described power supply adaptor can be provided with two, when one of them can not be worked, and the work of can automaticallying switch, thus increased the reliability of using; In addition, the shape of described heating column also is not limited to U-shaped, carries out the heat conduction as long as can insert thermal column inside; The shape of cross section of described thermal column also is not limited to rhombus, can adopt other to help the shape that air flows, for example triangle or pentagon etc.; Described heat conduction bar and heating column are not limited to copper fitting; Described cooling base and thermal column also are not limited to alumiaum article.

Claims

1. the LED lamp that has radiator structure comprises radiator, pcb board and is arranged at led light source on the pcb board, and described radiator has comprised cooling base and has been distributed in the some thermal columns on this cooling base surface;

It is characterized in that:

Described thermal column inside has cavity, is provided with heat-conducting unit between described pcb board and the radiator, and described heat-conducting unit has the heating column that can insert in the described cavity, and described heating column contacts with the chamber wall of described cavity.

2. the LED lamp with radiator structure according to claim 1, it is characterized in that: described heat-conducting unit has also comprised and has pasted the heat conduction bar that is fixed in described pcb board, the center of described led light source contacts with described heat conduction bar, and described heat conduction bar contacts with described heating column.

3. the LED lamp with radiator structure according to claim 2, it is characterized in that: described heating column takes the shape of the letter U.

4. the LED lamp with radiator structure according to claim 3 is characterized in that: described heating column is established the heat pipe of liquid in being.

5. the LED lamp with radiator structure according to claim 4 is characterized in that: described heat conduction bar and heat pipe are copper fitting.

6. according to each described LED lamp with radiator structure of claim 1 to 5, it is characterized in that: the cross section of described thermal column is rhombus, triangle or pentagon.

7. the LED lamp with radiator structure according to claim 6, it is characterized in that: described cooling base and thermal column are structure as a whole.

8. the LED lamp with radiator structure according to claim 7 is characterized in that: described cooling base and thermal column are alumiaum article.

9. according to each described LED lamp with radiator structure of claim 1 to 5, it is characterized in that: described LED lamp is provided with two power supply adaptors.

10. according to each described LED lamp with radiator structure of claim 1 to 5, it is characterized in that: described pcb board is a copper plates.