CN201436449U

CN201436449U - Led light source

Info

Publication number: CN201436449U
Application number: CN2009200598467U
Authority: CN
Inventors: 凌云
Original assignee: 凌云
Current assignee: Wuhu Dehao Runda Optoelectronics Technology Co., Ltd.
Priority date: 2009-07-06
Filing date: 2009-07-06
Publication date: 2010-04-07
Anticipated expiration: 2019-07-06

Abstract

The utility model provides an LED light source, which adopts an integral structure, thus can effectively solve the heat radiation problem of an LED chip, and the working temperature of the LED chip is controlled at low level. The utility model is realized by the following technical schemes: the LED light source comprises a radiating fin and an LED lamp bulb, and the LED lamp bulb comprises an LED chip; wherein and the LED light source also comprises an array microgroove heat pipe; the array microgroove heat pipe is connected with the LED lamp bulb and the heat radiating fin, the LED chip is directly packaged on the pipe wall of the array microgroove heat pipe, and the heat radiating fin is directly fixed on the pipe wall of the array microgroove heat pipe. The LED light source comprises a plurality of the heat radiating fins and a plurality of LED lamp bulbs. The LED chip is welded with a gold thread, coated with fluorescent powder and used for packaging lenses. The gold thread is connected with a cathode and an anode.

Description

Led light source

Technical field

The utility model belongs to lighting technical field, is specifically related to a kind of led light source.

Background technology

Led light source is with its excellent luminous efficiency and good colour rendering, and long-life, characteristics such as be quick on the draw, and a lot of occasions progressively replace conventional light source.

But, the electric energy that led light source also has about 80% is converted into heat when led chip is worked, it is about 125 ℃ that led chip normally allows operating temperature, if the led chip caloric value can not in time be dredged away, will burn out led chip, and, for keeping the long-life that led chip uses, need led chip to remain on the low temperature of trying one's best.

In present led light source structure, all be to adopt the bead weld of plurality of LEDs lamp is connected on to make lamp plate on the aluminium base, again lamp plate is fitted on the Aluminium Radiator of multi-disc radiating fin, dispels the heat, solve the heat dissipation problem of led chip by the heat transfer free convection of radiating fin and air.

In this structure, heat is binded up one's hair out by the P-N of chip, to elargol, arrive copper heat sinkly by chip bottom again, finish lamp pearl internal heat and conduct, and then by copper heat sink bottom by being soldered to the copper foil layer on the aluminium base, arrive insulating barrier again, arrive aluminum base plate again.Heat is transmitted to radiator base plate by aluminum base plate more then, is transmitted to the multi-disc radiating fin by radiator base plate again.

In this whole heat transfer process, intermediate link is many, and thermal resistance is big, and radiating effect is undesirable, and volume is big, and material usage is many, can not effectively the led chip operating temperature be controlled at lower level.

In addition, array microflute heat pipe is a kind of novel efficient hot conduction technique, its equivalent thermal conductivity is the hundred times of copper, has been applied to leading-edge fields such as Aeronautics and Astronautics, nuclear energy, microelectronics in recent years, can solve the heat radiation difficult problem that solution is badly in need of in these fields effectively.

Summary of the invention

The purpose of this utility model is to provide a kind of led light source, adopts incorporate structure, can effectively solve the heat dissipation problem of led chip, and the led chip operating temperature is controlled at lower level.

The utility model is achieved through the following technical solutions:

Led light source includes radiating fin and LED lamp pearl, and described LED lamp pearl includes led chip; Wherein, described led light source also includes array microflute heat pipe; Described array microflute heat pipe connects LED lamp pearl (3) and radiating fin (1), and described led chip directly is encapsulated on the array microflute thermotube wall, and described radiating fin directly is fixed on the array microflute thermotube wall.

Described led light source includes multi-disc radiating fin and plurality of LEDs lamp pearl.

Be welded with gold thread and coating fluorescent powder, package lens on the described led chip, gold thread is connected with negative electrode, anode.

To sum up, the beneficial effects of the utility model are:

Led light source of the present utility model, it is a kind of led light source module based on the heat radiation of array microflute hot pipe technique, include array microflute heat pipe, in the led light source of this new structure, adopt incorporate structure, array microflute heat pipe, plurality of LEDs lamp pearl and multi-disc radiating fin are integrated in the module, can effectively solve the heat dissipation problem of led chip, and the led chip operating temperature is controlled at lower level.By the superpower capacity of heat transmission of array microflute heat pipe, heat is binded up one's hair out by the P-N of chip equally, arrive elargol by chip bottom, directly arrived array microflute thermotube wall then, working medium inner after tube wall is heated is promptly vaporized, and heat is delivered to array microflute heat pipe everywhere, is transmitted to the multi-disc radiating fin everywhere equably by array microflute heat pipe again, be dispersed in the air by the free convection mode by the multi-disc radiating fin at last, finish the entire heat dissipation process.

In this whole heat transfer process, intermediate link is few, and thermal resistance is little, and the heat radiation effective area is big, satisfactory for result, and compact conformation, and volume is little, and material usage is few, can effectively the led chip operating temperature be controlled at lower level.The heat that led chip work the time is sent promptly is transmitted on the radiating fin, and is dispersed in the air, makes chip keep lower operating temperature, prolongs chip service life.

Description of drawings

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 is the overall structure principle schematic of the utility model led light source embodiment one;

Fig. 2 is the perspective view of the utility model led light source embodiment one;

Fig. 3 is the perspective view of the utility model led light source embodiment two;

Fig. 4 is the perspective view of the utility model led light source embodiment three;

Fig. 5 is the perspective view of the utility model led light source embodiment four.

Description of reference numerals:

1, radiating fin, 2, array microflute heat pipe, 3, LED lamp pearl, 31, negative electrode, 32, led chip, 33, lens, 34, gold thread, 35, anode.

The specific embodiment

The utility model discloses a kind of led light source, as Fig. 1, includes radiating fin 1 and LED lamp pearl 3, and described LED lamp pearl 3 includes led chip 32; Wherein, described led light source also includes array microflute heat pipe 2; Described array microflute heat pipe 2 is between LED lamp pearl 3 and radiating fin 1, and described led chip 32 directly is encapsulated on array microflute heat pipe 2 tube walls, and described radiating fin 1 directly is fixed on array microflute heat pipe 2 tube walls.

Described led light source includes multi-disc radiating fin 1 and plurality of LEDs lamp pearl 3.

Be welded with gold thread 34 and coating fluorescent powder on the described led chip 32, package lens 33, gold thread 34 is connected with negative electrode 31, anode 35.

Be printed with printed wire on described array microflute heat pipe 2 tube walls, a plurality of LED lamp pearls 3 adopt string or the mode of being connected in parallel to be connected with printed wire.

Described array microflute heat pipe includes a plurality of microflute heat pipe unit, and described microflute heat pipe unit inwall includes 1 to many microflutes, described microflute heat pipe unit closed at both ends, and there is the easily working medium of vaporization of being heated inside.

Described microflute heat pipe unit cross section can be shapes such as circular, square, rhombus, triangle, trapezoidal, runway circle or polygon, the cross section of described microflute is semicircle, square, rhombus, triangle, trapezoidal, U-shaped or polygon, and the cross-sectional width size of microflute is between 0.1～2mm.

Describe embodiment of the present utility model below by accompanying drawing, need to prove, technical scope of the present utility model is not subjected to the qualification of embodiment.

Embodiment one:

As Fig. 1,2, in the present embodiment, every radiating fin all adopts the rectangle plane structure, and multi-disc radiating fin 1 is linear array, and each radiating fin is parallel to each other and is separated with specific range; Array microflute heat pipe 2 is the below that plane tabular is positioned at multi-disc radiating fin 1, and with radiating fin 1 the fin plane vertical; Multi-disc radiating fin 1 is fixed on the upper wall surface of array microflute heat pipe 2.

Described plurality of LEDs lamp pearl 3 is fixed on the lower wall surface of array microflute heat pipe 2.

Described array microflute heat pipe 2 is arranged side by side by the microflute heat pipe unit linearity of many elongated straight tubuloses and forms.

Embodiment two:

As Fig. 3, in the present embodiment, described every radiating fin all adopts circular planar structure, and multi-disc radiating fin 1 is linear array, and each radiating fin is parallel to each other and is separated with specific range; Array microflute heat pipe 2 adopts the circular array structure, and whole cylindrical, multi-disc radiating fin 1 is set in the epimere wall periphery of array microflute heat pipe 2; Plurality of LEDs lamp pearl 3 is fixed on the hypomere wall periphery of array microflute heat pipe 2.

The fin plane of described radiating fin 1 is perpendicular to the center line of array microflute heat pipe 2.

Embodiment three:

As Fig. 4, in the present embodiment, described array microflute heat pipe 2 adopts the circular arc array structure, and integral body is the circular arc cylindrical shape; Every radiating fin all adopts the rectangle plane structure, and multi-disc radiating fin 1 is the circular arc arrayed, and each radiating fin is along the epimere wall periphery that radially is fixed on array microflute heat pipe 2 of array microflute heat pipe 2; Plurality of LEDs lamp pearl 3 is fixed on the hypomere wall periphery of array microflute heat pipe 2.

The fin plane parallel of described radiating fin 1 or be overlapped in the center line of array microflute heat pipe 2.

Embodiment four:

As Fig. 5, in the present embodiment, described array microflute heat pipe 2 adopts the regular polygon array structure, and integral body is the regular polygon cylinder body shape; Every radiating fin all adopts the rectangle plane structure, and multi-disc radiating fin 1 is along the epimere wall periphery that radially is fixed on array microflute heat pipe 2 of array microflute heat pipe 2; Plurality of LEDs lamp pearl 3 is fixed on the hypomere wall periphery of array microflute heat pipe 2.

Above-mentioned listed specific implementation is nonrestrictive, and to one skilled in the art, in not departing from the utility model scope, various improvement and the variation carried out all belong to protection domain of the present utility model.

Claims

1.LED light source includes radiating fin (1) and LED lamp pearl (3), described LED lamp pearl (3) includes led chip (32); It is characterized in that: described led light source also includes array microflute heat pipe (2); Described array microflute heat pipe (2) connects LED lamp pearl (3) and radiating fin (1), and described led chip (32) directly is encapsulated on array microflute heat pipe (2) tube wall, and described radiating fin (1) directly is fixed on array microflute heat pipe (2) tube wall.

2. led light source according to claim 1 is characterized in that: include described radiating fin of multi-disc (1) and many described LED lamp pearls (3).

3. led light source according to claim 2 is characterized in that: be welded with gold thread (34) and coating fluorescent powder on the described led chip (32), and package lens (33) then, gold thread (34) is connected with negative electrode (31), anode (35).

4. led light source according to claim 3 is characterized in that: be printed with printed wire on described array microflute heat pipe (2) tube wall, a plurality of LED lamp pearls (3) adopt string or the mode of being connected in parallel to be connected with printed wire.

5. led light source according to claim 3, it is characterized in that: described array microflute heat pipe includes a plurality of microflute heat pipe unit, described microflute heat pipe unit inwall includes 1 to many microflutes, described microflute heat pipe unit closed at both ends, and there is the easily working medium of vaporization of being heated inside.

6. led light source according to claim 5, it is characterized in that: the cross section of described microflute heat pipe unit is circular, square, rhombus, triangle, trapezoidal, runway circle or polygon, the cross section of described microflute is semicircle, square, rhombus, triangle, trapezoidal, U-shaped or polygon, and the cross-sectional width size of microflute is between 0.1～2mm.

7. according to any one described led light source in the claim 1 to 6, it is characterized in that: multi-disc radiating fin (1) is linear array, and each radiating fin is parallel to each other and is separated with specific range; Array microflute heat pipe (2) is plane tabular, and vertical with the fin plane of radiating fin (1); Multi-disc radiating fin (1) is fixed on the upper wall surface of array microflute heat pipe (2); Described plurality of LEDs lamp pearl (3) is fixed on the lower wall surface of array microflute heat pipe (2); Described array microflute heat pipe (2) is arranged side by side by the microflute heat pipe unit linearity of many elongated straight tubuloses and forms.

8. according to any one described led light source in the claim 1 to 6, it is characterized in that: described every radiating fin all adopts circular planar structure, and multi-disc radiating fin (1) is linear array, and each radiating fin is parallel to each other and is separated with specific range; Array microflute heat pipe (2) adopts the circular array structure, and whole cylindrical, multi-disc radiating fin (1) is set in the epimere wall periphery of array microflute heat pipe (2); Plurality of LEDs lamp pearl (3) is fixed on the hypomere wall periphery of array microflute heat pipe (2); The fin plane of described radiating fin (1) is perpendicular to the center line of array microflute heat pipe (2).

9. according to any one described led light source in the claim 1 to 6, it is characterized in that: described array microflute heat pipe (2) adopts the circular arc array structure, and integral body is the circular arc cylindrical shape; Every radiating fin all adopts the rectangle plane structure, and multi-disc radiating fin (1) is the circular arc arrayed, and each radiating fin is along the epimere wall periphery that radially is fixed on array microflute heat pipe (2) of array microflute heat pipe (2); Plurality of LEDs lamp pearl (3) is fixed on the hypomere wall periphery of array microflute heat pipe (2); The fin plane parallel of described radiating fin (1) or be overlapped in the center line of array microflute heat pipe (2).

10. according to any one described led light source in the claim 1 to 6, it is characterized in that: described array microflute heat pipe (2) adopts the regular polygon array structure, and integral body is the regular polygon cylinder body shape; Every radiating fin all adopts the rectangle plane structure, and multi-disc radiating fin (1) is along the epimere wall periphery that radially is fixed on array microflute heat pipe (2) of array microflute heat pipe (2); Plurality of LEDs lamp pearl (3) is fixed on the hypomere wall periphery of array microflute heat pipe (2); The fin plane parallel of described radiating fin (1) or be overlapped in the center line of array microflute heat pipe (2).