CN102281744A - High-power LED driven power supply radiator based on carbon nano tube - Google Patents
High-power LED driven power supply radiator based on carbon nano tube Download PDFInfo
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- CN102281744A CN102281744A CN2011102076158A CN201110207615A CN102281744A CN 102281744 A CN102281744 A CN 102281744A CN 2011102076158 A CN2011102076158 A CN 2011102076158A CN 201110207615 A CN201110207615 A CN 201110207615A CN 102281744 A CN102281744 A CN 102281744A
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Abstract
The invention discloses a high-power LED driven power supply heat sink based on a carbon nano tube, which comprises a protective cover, a PCB (printed circuit board) and a radiator; the heat sink is characterized in that the heat is rapidly and efficiently radiated by using the carbon nano tube radiating technology, so that the power supply is light, the service life is increased, and the structure design is simple.
Description
Technical field
The present invention relates to power technique fields, be specifically related to a kind of high-power LED driving power source heat abstractor based on carbon nano-tube.
Background technology
Power supply is the device that power is provided to electronic equipment, also claims power supply unit.It provides the needed electric energy of all parts in the equipment.The size of power, whether electric current and voltage is stable, will directly influence the service behaviour and the useful life of electronic equipment.
The LED power supply is a kind of of power supply, and it is widely used in: street lamp, tunnel lamp, LED Grille lamp, LED indoor lamp, LED Ceiling light, building, road and bridge, square Architectural Equipment, Lawn lamp, curtain wall lamp, mobile phone, computer etc., information plane show: the mine lamp during indicator light in display panel, dynamic billboard, simulation animation, stadiums, the compartment and internal read lamp, outer stop lamp, taillight, direction indicator lamp, side lamp, explosion-proof lamp, the mining industry of car are produced etc.
Power supply PCB (Printed Circuit Board, printed circuit board (PCB)) is to be the plate that substrate is processed into certain size with the insulating material, has been covered with all kinds of electronic components and lead above, and it is the important electron parts, is the supporter of electronic devices and components.Owing to be covered with all kinds of electronic components on the printed circuit board (PCB), when electric current passes through, each class component all can produce a large amount of used heat, if untimely dredging away will cause greatly element damages, and therefore heat radiation will be the big problem that the large power supply urgent need solves.
For PCB, its heat radiation mainly is three kinds of fundamental types---heat conduction, convection current, radiation.Radiation is to utilize the electromagnetic wave motion by the space that heat is distributed, and this mode heat dissipation capacity is less, usually as the auxiliary heat dissipation means.Heat conduction and convection current are main heat dissipation, and the radiating mode that we use always is: with radiator heat being uploaded from PCB derives, and utilizes cross-ventilation to distribute again.
Existing radiator mounting means generally is that radiator is encapsulated with main body, as adopt big heat dissipating housing (plate) technology, it is that position by heater members on the pcb board is with height and customization heat radiator dedicated or pluck out different element high and low positions on a big flat radiator.Heat dissipating housing integral body is buckled on the component side, contacts with each element and dispel the heat.But just consistency is poor when welding because components and parts are adorned, and radiating effect is also bad.Usually on the components and parts face, add soft hot heat conduction with phase change pad and improve radiating effect.Also can adopt the multilayered printed plate technique of Metal Substrate, it be meant multiple-plate certain simultaneously serve as a contrast metallic plate, by outwards heat radiation or directly link to each other and play the effect of quick heat radiating of metallic plate with external connection radiating device.These radiating modes have all directly increased the weight of the load of device, and radiator is generally metal material, and density is big, and hardness is also big, and cost is also high, and specific aim is poor, and design is heavy.
Through research and development, the copper pipe heat dissipation technology has also appearred, this technology is exactly the combination of " fan+heat pipe+heating panel " in simple terms, pcb board by heating panel with the hot copper pipe of heat transferred, the fan that runs up that is connected on the hot copper pipe other end simultaneously will be evacuated away the heat in the copper pipe, thereby realizes the heat radiation purpose.Also just like the disclosed a kind of PCB chip of Chinese patent CN200820203004 position heat dissipation base, it has improved traditional radiating mode that adheres to a block of metal fin at the PCB back side, directly at the chip position that produces high heat, metal fin is embedded among the PCB by mechanical pressing mode in corresponding chip bottom, makes heat radiation have more specific aim.These modes can reduce cost and light fixture weight to a certain extent, and radiating efficiency also improves.
Take traditional metal material radiating mode that passes through to dispel the heat but these improved procedures remain, there do not have to solve its density that has to be big at all, and hardness is big, the problem that cost is high.And along with development of material technology, seeking the modern new material that a kind of heat conductivility is higher than metal material, also is urgent problem.
Summary of the invention
The density that exists at the traditional metal materials radiating mode is big, hardness is big, cost is high and material thermal conductivity can good inadequately problem, the invention provides a kind of high-power LED driving power source heat abstractor based on carbon nano-tube, this device has adopted novel carbon nano-tube (Carbon nanotubes, CNTs) material is as heat sink material, carbon nano-tube have good heat conductivity, in light weight, be easy to carry and advantage be installed etc.
Technical scheme of the present invention is achieved in that a kind of high-power LED driving power source heat abstractor based on carbon nano-tube, comprises pcb board, radiator; Described radiator is connected by securing member with the pcb board back; Described radiator also comprises the radiating groove that is positioned at the radiator bottom; Described radiating groove the inside scribbles two-layer heat sink material, and that one deck of pressing close to pcb board is a heat-conducting glue, is one deck carbon nano-tube below the heat-conducting glue.
The present invention can do following improvement, and described a kind of high-power LED driving power source heat abstractor based on carbon nano-tube also comprises protective cover, described protective cover by protective cover by securing member be connected with radiator, and cover pcb board is complete.
Described protective cover both sides also have line outlet.
The number of described radiating groove is no less than 8.
Compared with prior art, the invention has the beneficial effects as follows: carbon nano-tube is as a kind of monodimension nanometer material, in light weight, hexagonal structure connects perfect, have many unusual mechanics, electricity and chemical property, particularly has the good heat transfer performance, its thermal conductivity is 5 times of copper, carbon nano-tube also has very large draw ratio, thereby its heat exchange performance alongst is very high, the heat exchange performance of its relative vertical direction is lower, and by suitable orientation, carbon nano-tube can be synthesized the heat conducting material of high anisotropy.So owing to adopted novel carbon nano-tube as heat sink material, need not too much heat sink material and just can reach corresponding heat radiation standard, radiating efficiency height and light fixture weight have and reduce, and can reach 1/10th of usefulness metal material weight, are easy to carry and install; In addition, the present invention has protective cover, carries out totally-enclosedly, reduces entering of dust, can also prolong the useful life of power supply.
Description of drawings
The present invention is described in further detail below in conjunction with the embodiment in the accompanying drawing, but do not constitute any limitation of the invention.
Fig. 1 is a kind of high-power LED driving power source construction for heat radiating device schematic diagram based on carbon nano-tube of the present invention;
Among the figure: protective cover 1, pcb board 2, radiator 3;
Fig. 2 is a protective cover structural representation of the present invention;
Among the figure: protective cover 1, line outlet 102,
Fig. 3 is a pcb board structural representation of the present invention;
Among the figure: pcb board 2,
Fig. 4 is a heat spreader structures schematic diagram of the present invention;
Among the figure: radiator 3, radiating groove 303.
Embodiment
The present invention is described further below in conjunction with accompanying drawing:
Embodiment 1
The specific embodiment of the present invention as shown in drawings, a kind of high-power LED driving power source heat abstractor based on carbon nano-tube, described radiator 3 is connected by securing member with pcb board 2 backs.
Described radiator 3 also comprises the radiating groove 303 that is positioned at the radiator bottom; Described radiating groove the inside scribbles two-layer heat sink material, and one deck of pressing close to pcb board is a heat-conducting glue, and the one deck below the heat-conducting glue is a carbon nano-tube.
Heat-conducting glue and pcb board 2 and carbon nano-tube are all combined closely, and can be better the heat of pcb board be conducted to carbon nano-tube.
In the time of power work, Boulez a large amount of electronic components and is produced a large amount of used heat on the pcb board 2, these used heat will be delivered to radiating groove 303 places of bottom by pcb board 2, and the ground floor material heat-conducting glue that radiating groove the inside and pcb board are combined closely will absorb heat rapidly, second layer material carbon nano-tube is given in conduction afterwards, because carbon nano-tube has good heat conduction function, the used heat that power supply produces will be imported in the air by it rapidly, thereby guarantee the operational environment of power supply.
Embodiment 2
The specific embodiment of the present invention as shown in drawings, a kind of high-power LED driving power source heat abstractor based on carbon nano-tube comprises protective cover 1, pcb board 2, radiator 3; Described radiator 3 is connected by securing member with pcb board 2 backs, described protective cover 1 by securing member be connected with radiator 3, and with pcb board 2 complete covering.
Described radiator 3 also comprises the radiating groove 303 that is positioned at the radiator bottom; Described radiating groove the inside scribbles two-layer heat sink material, and one deck of pressing close to pcb board is a heat-conducting glue, and the one deck below the heat-conducting glue is a carbon nano-tube.
Heat-conducting glue and pcb board 2 and carbon nano-tube are all combined closely, and can be better the heat of pcb board be conducted to carbon nano-tube.
In the time of power work, Boulez a large amount of electronic components and is produced a large amount of used heat on the pcb board 2, these used heat will be delivered to radiating groove 303 places of bottom by pcb board 2, and the ground floor material heat-conducting glue that radiating groove the inside and pcb board are combined closely will absorb heat rapidly, second layer material carbon nano-tube is given in conduction afterwards, because carbon nano-tube has good heat conduction function, the used heat that power supply produces will be imported in the air by it rapidly, thereby guarantee the operational environment of power supply.
Embodiment 3
The specific embodiment of the present invention as shown in drawings, a kind of high-power LED driving power source heat abstractor based on carbon nano-tube comprises protective cover 1, pcb board 2, radiator 3; Described radiator 3 is connected by securing member with pcb board 2 backs, described protective cover 1 by securing member be connected with radiator 3, and with pcb board 2 complete covering.
Also respectively there is a line outlet 102 described protective cover 1 both sides, as pcb board circuit are arranged, and can introduce and derive from this line outlet 102.
Described radiator 3 also comprises the radiating groove 303 that is positioned at the radiator bottom; Described radiating groove the inside scribbles two-layer heat sink material, and one deck of pressing close to pcb board is a heat-conducting glue, and the one deck below the heat-conducting glue is a carbon nano-tube.
Heat-conducting glue and pcb board 2 and carbon nano-tube are all combined closely, and can be better the heat of pcb board be conducted to carbon nano-tube.
In the time of power work, Boulez a large amount of electronic components and is produced a large amount of used heat on the pcb board 2, these used heat will be delivered to radiating groove 303 places of bottom by pcb board 2, and the ground floor material heat-conducting glue that radiating groove the inside and pcb board are combined closely will absorb heat rapidly, second layer material carbon nano-tube is given in conduction afterwards, because carbon nano-tube has good heat conduction function, the used heat that power supply produces will be imported in the air by it rapidly, thereby guarantee the operational environment of power supply.
The above embodiments only are the preferred embodiments of the present invention, can not limit interest field of the present invention with this, and therefore, the equivalent variations according to the present patent application claim is done still belongs to the scope that the present invention is contained.
Claims (4)
1. high-power LED driving power source heat abstractor based on carbon nano-tube, comprise pcb board (2), it is characterized in that: also comprise radiator (3), radiator (3) is connected by securing member with pcb board (2) back, has radiating groove (303) on the described radiator (3); Described radiating groove (303) surface scribbles two-layer heat sink material, and one deck of pressing close to pcb board (2) is a heat-conducting glue, and the one deck below the heat-conducting glue is a carbon nano-tube.
2. a kind of high-power LED driving power source heat abstractor according to claim 1 based on carbon nano-tube; it is characterized in that also comprising protective cover (1); described protective cover (1) by securing member be connected with radiator (3), described protective cover (1) is with complete the covering of pcb board (2).
3. a kind of high-power LED driving power source heat abstractor based on carbon nano-tube according to claim 2 is characterized in that described protective cover (1) also has the line outlet (102) that is positioned at both sides.
4. a kind of high-power LED driving power source heat abstractor based on carbon nano-tube according to claim 1 is characterized in that the number of described radiating groove (303) is no less than 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102076158A CN102281744A (en) | 2011-07-25 | 2011-07-25 | High-power LED driven power supply radiator based on carbon nano tube |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102076158A CN102281744A (en) | 2011-07-25 | 2011-07-25 | High-power LED driven power supply radiator based on carbon nano tube |
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| CN102281744A true CN102281744A (en) | 2011-12-14 |
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| CN2011102076158A Pending CN102281744A (en) | 2011-07-25 | 2011-07-25 | High-power LED driven power supply radiator based on carbon nano tube |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101680645A (en) * | 2007-05-07 | 2010-03-24 | 科锐Led照明科技公司 | Light fixtures and lighting devices |
| CN101826494A (en) * | 2010-04-13 | 2010-09-08 | 北京大学 | Heat dissipation device based on carbon nanotube arrays and low temperature co-fired ceramics and preparation method |
| CN102003690A (en) * | 2009-08-28 | 2011-04-06 | 深圳市名家汇城市照明科技有限公司 | High-power light-emitting diode (LED) lamp cap with epoxy resin heat conduction pipe added with carbon nano tube material |
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2011
- 2011-07-25 CN CN2011102076158A patent/CN102281744A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101680645A (en) * | 2007-05-07 | 2010-03-24 | 科锐Led照明科技公司 | Light fixtures and lighting devices |
| CN102003690A (en) * | 2009-08-28 | 2011-04-06 | 深圳市名家汇城市照明科技有限公司 | High-power light-emitting diode (LED) lamp cap with epoxy resin heat conduction pipe added with carbon nano tube material |
| CN101826494A (en) * | 2010-04-13 | 2010-09-08 | 北京大学 | Heat dissipation device based on carbon nanotube arrays and low temperature co-fired ceramics and preparation method |
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Application publication date: 20111214 |