CN213955097U - Light source heat dissipation device - Google Patents
Light source heat dissipation device Download PDFInfo
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- CN213955097U CN213955097U CN202023205669.4U CN202023205669U CN213955097U CN 213955097 U CN213955097 U CN 213955097U CN 202023205669 U CN202023205669 U CN 202023205669U CN 213955097 U CN213955097 U CN 213955097U
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Abstract
The utility model relates to the technical field of heat dissipation, in particular to a light source heat dissipation device, which comprises a light source component and a plurality of heat dissipation components, wherein each heat dissipation component comprises a heat conduction temperature equalizing part, a heat conduction part and a plurality of heat dissipation parts; the heat conduction temperature equalizing part is used for diffusing the heat surface of the light source component, the heat conduction part is used for transferring the heat of the heat conduction temperature equalizing part to the first radiating fin, and the heat on the first radiating fin is diffused into the convection cavity and then is radiated by natural convection. The utility model provides a pair of light source heat abstractor, make full use of natural heat dissipation's principle and Thoms effect, utilize the laminar resistance to be than the principle that turbulent resistance is little promptly, increased the radiating laminar flow layer of radiator unit, increase the mobility of air, realized exchanging the heat of light source subassembly and cold air high efficiency to reach high-efficient radiating purpose.
Description
Technical Field
The utility model belongs to the technical field of the heat dissipation technique and specifically relates to indicate a light source heat abstractor.
Background
In the field of machine vision inspection, the illumination light source is used for illuminating features, so that the gray value difference between the features and the background is maximized, and the illumination light source is required to have higher brightness or illumination. On the premise that the efficiency of the optical system is not changed, if higher brightness or illumination is required, a light source with higher power is necessary.
The linear high-power LED light source has the modes of natural convection heat dissipation, forced convection heat dissipation, radiation heat dissipation, liquid cooling heat dissipation, phase change heat dissipation and the like. Most of the existing common linear light sources in the market adopt conventional radiating fins for natural heat dissipation, and part of high-power linear light adopts an air-cooling or liquid-cooling forced heat dissipation mode. However, the forced heat dissipation can reduce the temperature of the light source and increase the cost of the product, and the air-cooled or liquid-cooled structure is limited by many conditions in consideration of the requirements of many users on the use environment. On the other hand, the conventional radiating fin mainly radiates heat by radiation, the conducted heat is radiated to the air to achieve the radiating purpose, the hollow surface of the radiating fin is not consistent with the flowing direction of hot air, the air heated and expanded by the LED heat cannot be efficiently subjected to heat exchange with ambient cold air in time, the temperature is overhigh, and the light source is attenuated too fast to influence the detection precision. In addition, in such a structure, the area of the heat dissipation assembly needs to be increased to improve the heat dissipation effect, so that the size of the finished light source is greatly increased, and certain trouble is brought to the assembly and use of an application client.
Disclosure of Invention
The utility model discloses problem to prior art provides a light source heat abstractor, carries out natural convection through radiator unit, can save the cost, can reach the efficient radiating effect again.
In order to solve the technical problem, the utility model discloses a following technical scheme: a light source heat dissipation device comprises a light source component and a plurality of heat dissipation components, wherein each heat dissipation component comprises a heat conduction temperature equalizing part, a heat conduction part and a plurality of heat dissipation parts; the heat conduction temperature equalizing part is used for diffusing the heat surface of the light source component, the heat conduction part is used for transferring the heat of the heat conduction temperature equalizing part to the first radiating fin, and the heat on the first radiating fin is diffused into the convection cavity and then is radiated by natural convection.
Preferably, the heat dissipation assembly further comprises a heat dissipation housing, the heat dissipation housing is fixed to the heat conduction temperature equalization portion and then forms a plurality of convection cavities with the heat conduction portion, and the plurality of heat dissipation portions are respectively located in the plurality of convection cavities.
Preferably, a radiating surface is arranged on one side, where the heat conducting portion is arranged, of the heat conducting and temperature equalizing portion, the radiating surface is in the shape of an arc surface, and the radiating surface is bent and extended from the heat conducting portion to the periphery of the heat conducting and temperature equalizing portion.
Preferably, a plurality of second cooling fins are arranged at two ends of the heat-conducting temperature-equalizing part, and the lengths of the second cooling fins are unequal.
Preferably, the side wall of the first heat sink is provided with a plurality of first cutting projections in a protruding manner, and the plurality of first cutting projections are arranged at equal intervals.
Preferably, a plurality of second truncated lugs are convexly arranged on the side wall of the first radiating fin of at least one radiating part, and the second truncated lugs are arranged at equal intervals.
Preferably, the length of the first cooling fin positioned in the middle of the convection cavity is greater than the length of the first cooling fin positioned on both sides of the convection cavity.
Preferably, the light source assembly includes a plurality of light emitting modules, an optical module and a fixing module, the light emitting modules are fixed to the heat-conducting temperature equalizing portion, and the optical module is installed in the heat dissipating assembly and is used for changing the light emitting direction of the light emitting modules.
Preferably, the light-emitting module includes PCB board and a plurality of LED luminous element, the PCB board includes circuit layer, heat-conducting layer and basement, the LED luminous element is fixed in the circuit layer and is connected with the circuit layer electricity, the heat that the LED luminous element produced transmits the basement via the heat-conducting layer, the basement is fixed in heat conduction samming portion.
Preferably, the thermal conductivity of both the thermal-conductive temperature equalizing portion and the thermal-conductive portion is equal to or greater than 100W/(M.K).
The utility model has the advantages that:
the utility model provides a pair of light source heat abstractor, the heat that the light source subassembly produced, the heat that produces such as LED is generally the punctiform, then can be the surface form with the punctiform heat diffusion of light source subassembly through heat conduction samming portion, on the heat diffusion of rethread heat conduction portion with heat conduction samming portion reaches the radiating part of three-dimensional form, the three-dimensional radiating part of a plurality of first fin formation promptly, then, via the heat exchange between first fin and the ambient air again, give off the heat, reach the radiating effect for the light source subassembly. The utility model discloses a light source heat abstractor, the heat that produces the light source subassembly is by the gradual diffusion of the face to the body of some, make full use of natural radiating principle and Thoms effect, utilize the laminar resistance to be than the principle that turbulent resistance is little promptly, increased the radiating laminar flow layer of radiator unit, increase the mobility of air, realized exchanging the heat and the cold air high efficiency of light source subassembly to reach high-efficient radiating purpose.
Drawings
Fig. 1 is a first schematic structural diagram according to a first embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a first embodiment of the present invention.
Fig. 3 is a schematic structural view of the fixing portion and the heat dissipation assembly according to the first embodiment of the present invention after being disassembled.
Fig. 4 is a schematic structural diagram of the PCB of the present invention.
Fig. 5 is a schematic structural view of the air convection direction of the present invention.
Fig. 6 is a schematic structural diagram of a second embodiment of the present invention.
Fig. 7 is a schematic structural diagram of a third embodiment of the present invention.
Fig. 8 is a schematic structural diagram of a fourth embodiment of the present invention.
Fig. 9 is a schematic structural diagram of a fifth embodiment of the present invention.
Fig. 10 is a schematic structural diagram of a sixth embodiment of the present invention.
Fig. 11 is a schematic structural diagram of a seventh embodiment of the present invention.
The reference numerals in fig. 1 to 11 include:
1-heat conduction temperature equalizing part, 2-heat conduction part, 3-first heat radiating fin, 4-heat radiating shell, 5-convection cavity, 6-radiation surface, 7-second heat radiating fin, 8-first cut-off lug, 9-second cut-off lug, 10-optical module, 11-fixed module, 12-PCB board, 13-LED luminous body, 14-circuit layer, 15-heat conducting layer, 16-substrate, 17-supporting part and 18-separating part.
Detailed Description
In order to facilitate understanding of those skilled in the art, the present invention will be further described with reference to the following examples and drawings, which are not intended to limit the present invention. The present invention will be described in detail with reference to the accompanying drawings.
The first embodiment is as follows:
the light source heat dissipation device provided in this embodiment, as shown in fig. 1 and 5, includes a light source assembly and a plurality of heat dissipation assemblies, where each heat dissipation assembly includes a heat-conducting temperature-equalizing portion 1, a heat-conducting portion 2, and a plurality of heat dissipation portions, the light source assembly is installed in the heat-conducting temperature-equalizing portion 1, the heat-conducting portion 2 is fixed to the heat-conducting temperature-equalizing portion 1, and each of the plurality of heat dissipation portions includes a plurality of first heat dissipation fins 3 fixed to the heat-conducting portion 2; the heat conduction and temperature equalization part 1 is used for diffusing the heat surface of the light source component, the heat conduction part 2 is used for transferring the heat of the heat conduction and temperature equalization part 1 to the first radiating fin 3, and the heat on the first radiating fin 3 is diffused into the convection cavity 5 and then is radiated by natural convection. Preferably, the thermal conductivity of both the thermal conductive temperature equalization portion 1 and the thermal conductive portion 2 is equal to or greater than 100W/(M.K), but not limited thereto.
Further, when the light source assembly is horizontally disposed as shown in fig. 5, the first heat dissipation fins 3 are vertically disposed, that is, the heat dissipation grooves formed between the adjacent first heat dissipation fins 3 are also vertically disposed. Thereby, the heat radiating grooves can be matched with the heat flowing direction of the air.
Specifically, this embodiment is the light source subassembly heat dissipation through the mode of natural convection, and natural convection is the heat that produces through the light source subassembly with the air heating, makes the air produce through the thermal energy of air and flows to realize the heat exchange of heat and air, rethread thermal conduction realizes radiator unit's heat dissipation function.
As shown in fig. 2, the heat-conducting temperature equalizing portion 1 of the present embodiment is plate-shaped, and the heat generated by the light source assembly, such as the heat generated by the LED, is generally point-shaped or linear on the PCB 12 for fixing the LED, and at this time, the point-shaped heat or linear heat of the light source assembly can be diffused into a planar shape by the heat-conducting temperature equalizing portion 1, so as to increase the diffusion area; then, the heat of the heat-conducting uniform temperature portion 1 is diffused to the three-dimensional heat dissipation portion, i.e. the three-dimensional heat dissipation portion formed by the plurality of first heat dissipation fins 3, by the heat-conducting portion 2, as shown in fig. 1, three heat dissipation portions can be provided in this embodiment, at this time, the shape of the heat-conducting portion 2 is the three-dimensional special shape as shown in fig. 1 and 2, and is determined mainly according to the heat flow distribution direction, as in this embodiment, the heat-conducting portion 2 includes a central support portion 17 and a plurality of partition portions 18, and a heat dissipation portion is formed between adjacent partition portions 18, therefore, the three heat dissipation portions are distributed around the heat-conducting portion 2, the plurality of first heat dissipation fins 3 of the heat dissipation portion are arranged in parallel, thereby forming a three-dimensional shape, the heat of the heat-conducting uniform temperature portion 1 is conducted to the plurality of first heat dissipation fins 3 by the heat-conducting portion 2, thereby the planar heat is converted into a three-dimensional shape, and then, the heat exchange between the first heat dissipation fins 3 and the ambient air, the heat is radiated to achieve the effect of radiating the light source component. The heat that this embodiment produced the light source subassembly is by the gradual diffusion of point to face to the body, make full use of natural heat dissipation's principle and Thoms effect, utilize the laminar flow resistance to be than the principle that the turbulent flow resistance is little promptly, the radiating laminar flow layer of radiator unit has been increased, increase the mobility of air, thereby realized exchanging the heat and the cold air high efficiency of light source subassembly, reach high-efficient radiating purpose, and need not the assistance of exterior structure, thereby can save manufacturing cost, and also be convenient for actual production equipment.
In the light source heat dissipation device provided in this embodiment, as shown in fig. 1 and fig. 2, the heat dissipation assembly further includes a heat dissipation housing 4, the heat dissipation housing 4 is fixed to the heat conduction temperature equalization portion 1 and then forms a plurality of convection cavities 5 with the heat conduction portion 2, and the plurality of heat dissipation portions are respectively located in the plurality of convection cavities 5.
Specifically, the heat dissipation housing 4 is added to form a plurality of convection cavities 5, and the laminar flow of the heat dissipation portion is increased, so that the heat dissipation effect of the embodiment is further improved. Preferably, the material selected for the heat dissipation housing 4 should have sufficient yield strength, good coloring adhesion, good molding property, etc., so as to satisfy better laminar flow effect and reduce production cost.
In the light source heat dissipation device provided in this embodiment, as shown in fig. 3 and fig. 4, the light source assembly includes a plurality of light emitting modules, an optical module 10 and a fixing module 11, the fixing module 11 adopts the prior art, the light emitting modules are fixed to the heat-conducting temperature equalizing portion 1, the optical module 10 is installed on the heat dissipation assembly and is used for changing the light divergence direction of the light emitting modules, and preferably, a refractive element, a reflective element, a polarization element, a phase element, or the like may be adopted. The light-emitting module comprises a PCB (printed circuit board) 12 and a plurality of LED luminous bodies 13, wherein the PCB 12 comprises a circuit layer 14, a heat conduction layer 15 and a substrate 16, the LED luminous bodies 13 are fixed on the circuit layer 14 and are electrically connected with the circuit layer 14, heat generated by the LED luminous bodies 13 is transferred to the substrate 16 through the heat conduction layer 15, and the substrate 16 is fixed on the heat conduction temperature equalizing part 1.
Specifically, when the LED light emitter 13 is lighted, heat is generated and transferred to the heat conduction layer 15 of the PCB 12 through heat conduction, and then transferred to the substrate 16 through the heat conduction layer 15, and finally transferred to the heat conduction temperature equalizing portion 1 through the substrate 16, thereby forming a planar heat dissipation effect. The heat conduction layer 15 of the embodiment has the thermal conductivity more than 1W/(M.K) and less than 100W/(M.K), and has good heat conduction effect; the substrate 16 has good thermal conductivity, and for example, a ceramic substrate 16, an aluminum substrate 16, or a copper substrate 16 is used. Therefore, the heat conducting layer 15 and the substrate 16 can conduct heat of the LED luminous body 13 to the heat conducting temperature uniforming portion 1 well and quickly.
In addition, when there is a need, the heat dissipation assembly of the present embodiment may further include a forced convection assembly, a liquid cooling assembly, and the like, for example, an external air cooling structure and a water cooling structure are added, so as to increase the heat dissipation effect of the light source heat dissipation device of the present embodiment.
Example two:
in the light source heat dissipation device provided in this embodiment, as shown in fig. 6, the heat conduction temperature equalizing portion 1 of this embodiment is different from the first embodiment in the flat plate shape, one side of the heat conduction portion 2 of the heat conduction temperature equalizing portion 1 of this embodiment is provided with a radiation surface 6, the radiation surface 6 is an arc surface, and the radiation surface 6 is bent and extended from the heat conduction portion 2 to the periphery of the heat conduction temperature equalizing portion 1 to form a crescent-like shape, so that this embodiment can enhance the heat dissipation effect by the radiation heat dissipation function of the radiation surface 6 of the heat conduction temperature equalizing portion 1.
Example three:
in the light source heat dissipation device provided in this embodiment, as shown in fig. 7, in the third embodiment, on the basis of the second embodiment, the second heat dissipation fins 7 are added to the radiation surface 6, so that the heat dissipation area of the radiation surface 6 is further increased, and the heat dissipation effect is improved. The length of the second fin 7 is determined by the radiation surface 6, and the lengths are different.
Example four:
a difference between the present embodiment and the third embodiment is that the present embodiment does not provide the radiation surface 6, and the second heat sink 7 is directly added to the flat heat-conducting temperature equalizing portion 1, as shown in fig. 8, the heat dissipation area of the heat-conducting temperature equalizing portion 1 is increased by the second heat sink 7, so as to improve the heat dissipation effect.
Example five:
in the light source heat dissipation device provided in this embodiment, as shown in fig. 9, on the basis of the third embodiment, a plurality of first cut-off bumps 8 are convexly disposed on the sidewall of the first heat sink 3, and the plurality of first cut-off bumps 8 are disposed at equal intervals. Specifically, the first cutting projection 8 is arranged to enable the first radiating fin 3 to form a layered structure, so that firstly, the radiating area of the first radiating fin 3 can be increased, the radiating efficiency is improved, secondly, the laminar flow of the radiating part can be increased, further, the heat flow of air is improved, and the radiating effect is improved.
Example six:
the light source heat dissipation device provided by the present embodiment, as shown in fig. 10, the shape of the heat conduction portion 2 of the present embodiment is different from that of the first to fifth embodiments, the cross section of the heat conduction portion 2 of the present embodiment is a column, the heat dissipation portions are distributed on two sides of the heat conduction portion 2, that is, the present embodiment includes two heat dissipation portions, further, the first heat dissipation plate 3 of at least one heat dissipation portion is provided with the second cut-off protrusion 9, the second cut-off protrusion 9 is disposed at equal intervals, it can be ensured that heat is uniformly dissipated, the second cut-off protrusion 9 is the same as the first cut-off protrusion 8 in principle, which can increase the heat dissipation area of the first heat dissipation plate 3, and can also improve the heat flow rate of air, thereby improving the heat dissipation effect.
Example seven:
in the light source heat dissipation device provided in this embodiment, as shown in fig. 11, the first heat dissipation plate 3 in this embodiment may be configured as a structure having a long middle and two short sides, so as to increase the total heat dissipation area of the first heat dissipation plate 3, and further improve the heat dissipation effect of the heat dissipation portion.
The above description is only for the preferred embodiment of the present invention, and the present invention is not limited to the above description, and although the present invention is disclosed in the preferred embodiment, it is not limited to the above description, and any person skilled in the art can make some changes or modifications to equivalent embodiments without departing from the scope of the present invention, but all the technical solutions of the present invention are within the scope of the present invention.
Claims (9)
1. A light source heat abstractor which characterized in that: the LED lamp comprises a light source component and a plurality of heat dissipation components, wherein each heat dissipation component comprises a heat conduction temperature equalizing part, a heat conduction part and a plurality of heat dissipation parts;
the heat dissipation assembly further comprises a heat dissipation shell, the heat dissipation shell is fixed on the heat conduction temperature equalizing part and then forms a plurality of convection cavities with the heat conduction part, and the heat dissipation parts are respectively located in the convection cavities;
the heat conduction temperature equalizing part is used for diffusing the heat surface of the light source component, the heat conduction part is used for transferring the heat of the heat conduction temperature equalizing part to the first radiating fin, and the heat on the first radiating fin is diffused into the convection cavity and then is radiated by natural convection.
2. The heat sink for light source of claim 1, wherein: the radiating surface is arranged on one side, provided with the heat conducting part, of the heat conducting and temperature equalizing part, the shape of the radiating surface is an arc surface, and the radiating surface is bent and extended from the heat conducting part to the periphery of the heat conducting and temperature equalizing part.
3. The heat sink for light source as claimed in claim 1 or 2, wherein: and a plurality of second radiating fins are arranged at the two ends of the heat-conducting temperature-equalizing part, and the lengths of the second radiating fins are unequal.
4. The heat sink for light source of claim 3, wherein: the side wall of the first radiating fin is convexly provided with a plurality of first cutting convex blocks which are arranged at equal intervals.
5. The heat sink for light source of claim 1, wherein: the side wall of the first radiating fin of at least one radiating part is convexly provided with a plurality of second truncated lugs which are arranged at equal intervals.
6. The heat sink for light source of claim 1, wherein: the length of the first radiating fins positioned in the middle of the convection cavity is greater than the length of the first radiating fins positioned on two sides of the convection cavity.
7. The heat sink for light source of claim 1, wherein: the light source assembly comprises a plurality of light-emitting modules, an optical module and a fixing module, the light-emitting modules are fixed on the heat-conducting temperature equalizing part, and the optical module is arranged on the heat-radiating assembly and used for changing the light diffusion direction of the light-emitting modules.
8. The heat sink for light source of claim 7, wherein: the LED light-emitting module comprises a PCB and a plurality of LED light-emitting bodies, wherein the PCB comprises a circuit layer, a heat conduction layer and a substrate, the LED light-emitting bodies are fixed on the circuit layer and are electrically connected with the circuit layer, heat generated by the LED light-emitting bodies is transferred to the substrate through the heat conduction layer, and the substrate is fixed on the heat conduction temperature equalizing part.
9. The heat sink for light source of claim 1, wherein: the heat conduction coefficients of the heat conduction temperature equalizing part and the heat conduction part are both more than or equal to 100W/(M.K).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023205669.4U CN213955097U (en) | 2020-12-25 | 2020-12-25 | Light source heat dissipation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023205669.4U CN213955097U (en) | 2020-12-25 | 2020-12-25 | Light source heat dissipation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213955097U true CN213955097U (en) | 2021-08-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023205669.4U Active CN213955097U (en) | 2020-12-25 | 2020-12-25 | Light source heat dissipation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213955097U (en) |
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2020
- 2020-12-25 CN CN202023205669.4U patent/CN213955097U/en active Active
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