CN107084378A - LED radiator - Google Patents
LED radiator Download PDFInfo
- Publication number
- CN107084378A CN107084378A CN201710450124.3A CN201710450124A CN107084378A CN 107084378 A CN107084378 A CN 107084378A CN 201710450124 A CN201710450124 A CN 201710450124A CN 107084378 A CN107084378 A CN 107084378A
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- CN
- China
- Prior art keywords
- fin
- inner chamber
- light source
- led
- liquid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
- F21V29/50—Cooling arrangements
- F21V29/70—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
- F21V29/74—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades
- F21V29/77—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with essentially identical diverging planar fins or blades, e.g. with fan-like or star-like cross-section
- F21V29/773—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with essentially identical diverging planar fins or blades, e.g. with fan-like or star-like cross-section the planes containing the fins or blades having the direction of the light emitting axis
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
- F21V29/50—Cooling arrangements
- F21V29/502—Cooling arrangements characterised by the adaptation for cooling of specific components
- F21V29/503—Cooling arrangements characterised by the adaptation for cooling of specific components of light sources
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
- F21V29/50—Cooling arrangements
- F21V29/51—Cooling arrangements using condensation or evaporation of a fluid, e.g. heat pipes
Abstract
The invention provides a kind of LED radiator, including：Inner chamber, fin and light source mounting surface, wherein, light source mounting surface is placed with the contacts side surfaces of the barrel of inner chamber, and the surface configuration of the light source mounting surface has LED/light source；The fin is multi-disc, centered on the barrel of inner chamber, is spaced from the both sides of the light source mounting surface on the outside of the barrel of inner chamber in sector, wherein, the ripples of every fin both sides is in opposite direction, and the relative ripple of adjacent two panels fin is in opposite direction；Heat conduction with phase change liquid is injected with inner chamber.The present invention is by improving the NATURAL CONVECTION COEFFICIENT OF HEAT of fin air, so that more preferable radiating effect has been reached, while also achieving compact conformation, cost reduction, efficiency raising, it is particularly possible to suitable for high-power, high heat flux LED/light source.
Description
Technical field
The present invention relates to LED technical field of heat dissipation, more particularly to a kind of LED radiator.
Background technology
LED/light source is high due to electricity conversion, can significantly save electric energy, at the same also there is small volume, it is long lifespan, easily-controllable
Processed the features such as, therefore just rapid replacement conventional incandescent, fluorescent lamp, Metal halogen lamp and high-pressure mercury lamp etc., it is extensive in every field
Using.
But LED/light source is used as one kind of semiconductor diode, it is necessary to be operated within certain temperature range；More than specified
Temperature, will cause notable light decay or even burn.Especially some high-power LED light sources, heat flow density is very high, it is necessary to by heat and
When take away, be scattered in surrounding air.Therefore, the LED radiator of high efficient and reliable is just very necessary.
Metal heat sink being used current high-power LED light source, using the high thermal conductivity coefficient of metal, by the heat of LED/light source more
Measure away, then by the fin on radiator, using the convection current of air, reject heat in air.When this process reaches
During to thermal balance, the temperature of LED/light source can tend towards stability value.LED radiator purpose is exactly by the operating temperature control of LED/light source
Within rated temperature, it is ensured that LED safely and effectively works.
The thermal conductivity factor of metal heat sink is different, for the comprehensive consideration of cost and the capacity of heat transmission, aluminium alloy radiating
Device is the main flow in application.Aluminium Alloys in Common Use is different according to species, and thermal conductivity factor is typically between 50~200W/ (mK).
On heat conduction direction, metal heat sink can produce thermograde：I.e. from close to LED light source, to away from light source side, temperature gradually drops
It is low；Different according to power, maximum temperature difference is between several degrees Celsius to tens degrees Celsius.This temperature unevenness causes whole dissipate
The mean temperature step-down of hot device, that is, exchange capability of heat step-down.Mended to reach certain heat exchange amount, it is necessary to increase heat exchange area
Repay.
Because the campaign-styled mechanical organ such as fan has the characteristics of short life, noise are big, reliability is low, most of LED
Radiator all avoids using forced convertion, and uses high and idle the free convection of non-maintaining, reliability.But free convection
Have the disadvantage that convection transfer rate is low, in order to reach certain heat exchange amount, it is necessary to larger heat exchange area.
To sum up 2 points, the increase of heat exchange area can cause LED lamp cost increase, weight increase and space availability ratio drop
Low
The content of the invention
(1) technical problem to be solved
It is an object of the invention to provide a kind of LED radiator, to solve at least one above-mentioned technical problem.
(2) technical scheme
The invention provides a kind of LED radiator, wherein, including：Inner chamber, fin and light source mounting surface, wherein,
Light source mounting surface, is placed with the contacts side surfaces of the barrel of inner chamber, and the surface configuration of the light source mounting surface has LED
Light source；
The fin is multi-disc, centered on the barrel of inner chamber, from the both sides of the light source mounting surface outside the barrel of inner chamber
Side is spaced in sector, wherein, the ripples of every fin both sides is in opposite direction, and the relative ripple side of adjacent two panels fin
To opposite；
Heat conduction with phase change liquid is injected with inner chamber.
Alternatively, the ripple of the fin can be wedge angle ripple.
Alternatively, liquid-sucking core can be provided with the inner chamber, for adsorbing the heat conduction with phase change liquid, the liquid-sucking core
For the capillary structure of capillary force can be produced.
Alternatively, the liquid-sucking core can be woven wire, sintering metal powder or foam metal or equivalent diameter
For micron-sized channel structure.
Alternatively, the liquid injection port for the injection of heat conduction with phase change liquid can be offered on the inner chamber top, inner chamber can also be wrapped
Sealing cap is included, is screwed up with the liquid injection port, for sealing liquid injection port.
Alternatively, the inner chamber and fin can be integral type structure, and the material of the integral structure is aluminium alloy.
Alternatively, the quantity of the fin can be 2~120.
Alternatively, the height of the wedge angle ripple of the fin can be 1mm~5mm.
(3) beneficial effect
The present invention is compared to prior art, with advantages below：
1st, existing circular arc wave ripple is instead of present invention employs the fin of wedge angle ripple, adds heat exchange surface
Product, while causing disturbance to air, improves the NATURAL CONVECTION COEFFICIENT OF HEAT of fin-air, so as to reach more preferable radiating effect
Really.
2nd, the wedge angle ripple of adjacent fin opposing sides of the invention is unsymmetric structure, is disturbed with the air strengthened between fin
Stream is acted on, and is improved the NATURAL CONVECTION COEFFICIENT OF HEAT of fin-air, is reduced heat exchange area, meanwhile, the fin of radiator and interior
The barrel of chamber is integral type structure, and thermal contact resistance can be greatly decreased, so that the thermograde of radiator is reduced, it is achieved thereby that
Compact conformation, cost reduction, efficiency are improved, it is particularly possible to suitable for high-power, high heat flux LED/light source.
3rd, liquid-sucking core is provided with inner chamber of the invention, the heat conduction with phase change liquid for adsorbing intracavity bottom so that in LED
When light source levels are irradiated, it is ensured that heating face contacts heat conduction with phase change liquid all the time, so as to ensure radiating effect.
4th, the present invention according to the radiating requirements of user, can also adjust the width of fin, height, spacing, reach difference
Radiating effect.
5th, the present invention is rational in infrastructure, and easy to process, especially overall thermal resistance is low, thermal response is rapid, lightweight, small volume,
And multiple mounting modes and light angle are suitable for, available for multiple lamps such as bulkhead lamp, street lamp, Tunnel Lamp, Projecting Lamp, fish-luring lights
In tool.
Brief description of the drawings
Fig. 1 is the schematic appearance of the LED radiator of the embodiment of the present invention；
Fig. 2 is the internal view of the LED radiator of the embodiment of the present invention；
Fig. 3 is the wedge angle ripple schematic diagram of the LED radiator of the embodiment of the present invention.
Embodiment
Thermograde can be produced with the distance with LED during metal heat sink heat conduction in the prior art, temperature occur uneven
Even situation, in order to solve the problem, reaches certain heat exchange amount, it is necessary to increase heat exchange area to compensate.In addition, most of
LED radiator all avoids using forced convertion, and uses high and idle the free convection of non-maintaining, reliability.But it is naturally right
The shortcoming of stream is that convection transfer rate is low, in order to reach certain heat exchange amount, it is necessary to larger heat exchange area.Therefore, existing skill
In art, conventional is that above-mentioned technical problem is solved by increasing heat exchange area, but can cause LED lamp cost increase, again
The problem of amount increase and space availability ratio are reduced.
In order to solve the above-mentioned technical problem, the invention provides a kind of LED radiator, the fin generation of wedge angle ripple is employed
Existing circular arc wave ripple is replaced, angular shape can be triangle or other polygonals, in general, the angle of wedge angle
Degree selection acute angle.The wedge angle ripple of adjacent fin opposing sides is unsymmetric structure, by the fin of radiator and the barrel of inner chamber
Integral structure is designed as, the NATURAL CONVECTION COEFFICIENT OF HEAT of fin-air is improved, so as to reach more preferable radiating effect.Together
When also achieve LED radiator compact conformation, cost reduction, efficiency improve, be particularly suitable for use in high-power, high heat flux
LED/light source.In addition, the LED/light source not only when being aimed downwardly can high efficiency and heat radiation, pass through the present invention inner chamber in imbibition
Core, when also ensure that LED/light source horizontal irradiation, heating face contacts heat conduction with phase change liquid all the time, so as to ensure LED information display system in difference
Radiating effect during angular illumination.
For the object, technical solutions and advantages of the present invention are more clearly understood, below in conjunction with specific embodiment, and reference
Accompanying drawing, the present invention is described in more detail.
Fig. 1 is the schematic appearance of the LED radiator of the embodiment of the present invention, as shown in figure 1, the invention provides one kind
LED radiator, overall is in half sun fancy structure, including：Inner chamber 1, fin 4 and light source mounting surface 6.Wherein, light source mounting surface 6
Placed with the barrel contacts side surfaces of inner chamber 1, and in the surface configuration LED/light source of the light source mounting surface；Multi-disc fin 4 is with inner chamber
Centered on 1 barrel, from the both sides of the light source mounting surface 6, it is spaced in the barrel side of inner chamber 1 in sector, wherein, every
The ripple of the both sides of fin 4 is in opposite direction, and (that is, the ripple of the side of fin 4 is towards inner chamber 1, the ripple of opposite side is away from interior
Chamber 1), and the relative ripple of adjacent two panels fin 4 is in opposite direction.In addition, being injected with heat conduction with phase change liquid in inner chamber 1.
Different from existing conventional circular arc wave ripple, the ripple of the fin 4 of the embodiment of the present invention can be wedge angle ripple
Line, angular shape can be triangle or other polygonals, and its angle is generally acute angle, wherein, in order to easy to process, preferably
For triangle.On the one hand because two sections of straight lengths are more than arc length, heat exchange surface area is increased；More importantly ripple is sharp
Angle can cause disturbance to air.Air forms small vortex in sharp corner, and this vortex destroys the sky at fin 4
Gas thin layer --- this layer of air thin layer is referred to as boundary layer, because flow velocity is very low, actually one layer thermal resistance.The flow-disturbing in boundary layer can
To improve the NATURAL CONVECTION COEFFICIENT OF HEAT of fin 4- air.And the both sides of same ripple and adjacent two panels fin 4 are relative
Ripple is in opposite direction, the air in the gap of fin 4 can be made in flowing, the resistance that both sides are subject to is different, so as to produce one kind
Integrally rotated trend, improves the NATURAL CONVECTION COEFFICIENT OF HEAT of fin 4- air.
When LED/light source be arranged on light source mounting surface 6 on after, during work heat from LED/light source via heat-conducting silicone grease or heat conduction
Silica gel is transferred to light source mounting surface 6；For radiator, light source mounting surface 6 can be considered heating face.When LED/light source shines downwards
When penetrating, i.e., light source mounting surface 6 is horizontal plane, due to Action of Gravity Field, and deposited heat conduction with phase change liquid is covered inside heating face.Phase
Change heat-conducting liquid is low boiling working fluid, and ebullition, gasification after being heated is changed into gas phase from liquid phase, and this process is phase transition process.Due to liquid
The latent heat of body, which is much larger than heat conduction with phase change liquid in its sensible heat, phase transition process, can absorb substantial amounts of heat, it is ensured that LED/light source is sent
Heat guided in time, it is to avoid heat deposit；Phase transition process is thermostatic process simultaneously, by the boiling for adjusting heat conduction with phase change liquid
Point, it is ensured that LED light source temperature is all the time below rated temperature.Phase transformation drain body is cooled down on the wall of inner chamber 1, is released
Heat is to the barrel of inner chamber 1, and gas phase is changed into liquid phase, forms circulation again.
Fig. 2 is the internal view of the LED radiator of the embodiment of the present invention, as shown in Fig. 2 in the present embodiment, radiating
There is the liquid injection port for leading to cavity at device end face center, the liquid injection port 2 that heat conduction with phase change liquid is pushed up by inner chamber 1 is injected in inner chamber 1,
Sealing cap 3 can also be set simultaneously, by the way that sealing cap 3 is screwed up with the liquid injection port 2, to seal liquid injection port 2.Imbibition in inner chamber 1
Core 5, for adsorbing the heat conduction with phase change liquid, the liquid-sucking core 5 is capillary structure, can produce capillary force.When LED/light source water
During flat irradiation, i.e., light source mounting surface is that heat conduction with phase change liquid in vertical plane, inner chamber 1 sinks to bottom under gravity.Inhale
Wick-containing 5 transports heat conduction with phase change liquid by capillary force idle, so as to will come in the heat conduction with phase change liquid adsorption in inner chamber 1, phase
Become heat-conducting liquid in the presence of gravity and capillary force, reach stress balance, certain height is maintained in liquid-sucking core 5, it is ensured that
All the time heat conduction with phase change liquid is contacted inside heating face.As it was previously stated, heat conduction with phase change liquid absorption heat, gas phase is changed into from liquid phase,
It is diffused into lumen of radiator 1.With the reduction of liquid, the internal liquid height step-down of liquid-sucking core 5, total gravity is reduced, capillary
Power will be drawn on liquid again, so as to maintain its balance with gravity.Liquid-sucking core 5 is general by woven wire, sintered metal powders
End, foam metal or equivalent diameter are made up of micron-sized channel structure, wherein, the equivalent diameter of channel structure is generally preferably
For 50 μm~500 μm.As long as capillary structure can be formed, capillary force will be produced.The LED lamp of horizontal irradiation, in its radiating
Arrangement liquid-sucking core 5 in the cavity of device, it is ensured that heat conduction with phase change liquid can cover the heating region of LED/light source, it is ensured that preferably dissipate
Thermal effect, to maintain LED/light source to always work in rated temperature.
In addition, in embodiments of the present invention, inner chamber 1 is integral type structure with fin 4, using Extrusion Process of Aluminum Alloy Profile, forging and stamping or
The processing modes such as die casting can be accomplished.Weld, be bonded compared to fin 4, expanded joint or other machinery mode are fixed on inner chamber 1, can
Thermal contact resistance is greatly decreased, thermograde is reduced.
User can be according to radiating requirements, the width of adjustment fin 4, height, spacing, to reach different radiating effects.
In general, the quantity of the fin 4 is 2~120, and inner chamber is columned radiator, its overall diameter (i.e. two relative fin
The distance of piece 4) 50mm~500mm is generally, the height of the wedge angle ripple of fin 4 is 1mm~5mm, and the arrangement of fin 4 can be
It is rule or irregular.In addition, the shape size of the fin 4 of same LED radiator can be consistent, can also not
Unanimously.
Fig. 3 for the LED radiator of the embodiment of the present invention wedge angle ripple schematic diagram, as shown in figure 3, in two fins 4
In gap, the ripple wedge angle with respect to two faces is asymmetrical：Side wedge angle, outwardly (towards inner chamber), is ripple windward；Side
Wedge angle is ripple with the wind inwardly (away from inner chamber).This design of the present invention can make the air in the gap of adjacent fin 4 exist
During flowing, the resistance that both sides are subject to is different, so as to produce a kind of integrally rotated trend.This trend is in a kind of large scale
Flow-disturbing, accelerates it to cool as stirred hot water in life, is acted on the air disturbance for strengthening the gap of fin 4, so as to improve fin
The NATURAL CONVECTION COEFFICIENT OF HEAT of 4- air.
Particular embodiments described above, has been carried out further in detail to the purpose of the present invention, technical scheme and beneficial effect
Describe in detail bright, it should be understood that the foregoing is only the present invention specific embodiment, be not intended to limit the invention, it is all
Within the spirit and principles in the present invention, any modification, equivalent substitution and improvements done etc. should be included in the protection of the present invention
Within the scope of.
Claims (8)
1. a kind of LED radiator, wherein, including：Inner chamber, fin and light source mounting surface, wherein,
Light source mounting surface, is placed with the contacts side surfaces of the barrel of inner chamber, and the surface configuration of the light source mounting surface has LED light
Source；
The fin is multi-disc, centered on the barrel of inner chamber, is on the outside of the barrel of inner chamber from the both sides of the light source mounting surface
Sector is spaced, wherein, the ripples of every fin both sides is in opposite direction, and the relative ripple direction phase of adjacent two panels fin
Instead；
Heat conduction with phase change liquid is injected with inner chamber.
2. LED radiator according to claim 1, wherein, the ripple of the fin is wedge angle ripple.
3. LED radiator according to claim 1, wherein, liquid-sucking core is provided with the inner chamber, for adsorbing the phase
Become heat-conducting liquid, the liquid-sucking core is that can produce the capillary structure of capillary force.
4. LED radiator according to claim 3, wherein, the liquid-sucking core be woven wire, sintering metal powder or
Foam metal or equivalent diameter are micron-sized channel structure.
5. LED radiator according to claim 1, wherein, offered on the inner chamber top for the injection of heat conduction with phase change liquid
Liquid injection port, inner chamber also include sealing cap, screwed up with the liquid injection port, for sealing liquid injection port.
6. LED radiator according to claim 1, wherein, the inner chamber is integral type structure, the integral type knot with fin
The material of structure is aluminium alloy.
7. LED radiator according to claim 1, wherein, the quantity of the fin is 2~120.
8. LED radiator according to claim 2, wherein, the height of the wedge angle ripple of the fin is 1mm~5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710450124.3A CN107084378A (en) | 2017-06-14 | 2017-06-14 | LED radiator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710450124.3A CN107084378A (en) | 2017-06-14 | 2017-06-14 | LED radiator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107084378A true CN107084378A (en) | 2017-08-22 |
Family
ID=59606693
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710450124.3A Pending CN107084378A (en) | 2017-06-14 | 2017-06-14 | LED radiator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107084378A (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108050497A (en) * | 2018-02-11 | 2018-05-18 | 中国科学院工程热物理研究所 | For the side-emitting LED lamp radiator under superelevation heat flow density |
| CN108133918A (en) * | 2018-02-11 | 2018-06-08 | 中国科学院工程热物理研究所 | Micro capillary groove evaporator |
| CN108167671A (en) * | 2018-02-11 | 2018-06-15 | 中国科学院工程热物理研究所 | Side-emitting LED lamp |
| CN108167790A (en) * | 2018-02-11 | 2018-06-15 | 中国科学院工程热物理研究所 | For photo-thermal integrated device, radiator and the LED light under superelevation heat flow density |
| CN108168345A (en) * | 2018-02-11 | 2018-06-15 | 中国科学院工程热物理研究所 | For the heat sink and its manufacturing method under superelevation heat flow density |
| CN108302347A (en) * | 2018-02-11 | 2018-07-20 | 中国科学院工程热物理研究所 | Led lamp |
| CN108799856A (en) * | 2018-06-13 | 2018-11-13 | 中国科学院工程热物理研究所 | Light supply apparatus |
| CN108801017A (en) * | 2018-06-13 | 2018-11-13 | 中国科学院工程热物理研究所 | The radiator of pyrotoxin |
| CN109065513A (en) * | 2018-08-06 | 2018-12-21 | 中国科学院工程热物理研究所 | Finned radiator with triangular groove extended surface |
| CN110131692A (en) * | 2019-06-04 | 2019-08-16 | 中国科学院工程热物理研究所 | There is back the LED phase-change heat radiating device of fluid column |
| CN110242868A (en) * | 2019-05-21 | 2019-09-17 | 深圳市海洋王照明工程有限公司 | Light source module group and LED heat dissipation floodlight |
| CN112635418A (en) * | 2019-10-08 | 2021-04-09 | 全亿大科技（佛山）有限公司 | Liquid cooling radiator |
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| CN108167671A (en) * | 2018-02-11 | 2018-06-15 | 中国科学院工程热物理研究所 | Side-emitting LED lamp |
| CN108167790A (en) * | 2018-02-11 | 2018-06-15 | 中国科学院工程热物理研究所 | For photo-thermal integrated device, radiator and the LED light under superelevation heat flow density |
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| CN108799856A (en) * | 2018-06-13 | 2018-11-13 | 中国科学院工程热物理研究所 | Light supply apparatus |
| CN108801017A (en) * | 2018-06-13 | 2018-11-13 | 中国科学院工程热物理研究所 | The radiator of pyrotoxin |
| CN108801017B (en) * | 2018-06-13 | 2024-02-06 | 中国科学院工程热物理研究所 | Heat radiator for heat source |
| CN109065513A (en) * | 2018-08-06 | 2018-12-21 | 中国科学院工程热物理研究所 | Finned radiator with triangular groove extended surface |
| CN110242868A (en) * | 2019-05-21 | 2019-09-17 | 深圳市海洋王照明工程有限公司 | Light source module group and LED heat dissipation floodlight |
| CN110131692A (en) * | 2019-06-04 | 2019-08-16 | 中国科学院工程热物理研究所 | There is back the LED phase-change heat radiating device of fluid column |
| CN112635418A (en) * | 2019-10-08 | 2021-04-09 | 全亿大科技（佛山）有限公司 | Liquid cooling radiator |
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