CN110107822B - Heat dissipation device and lighting apparatus - Google Patents

Heat dissipation device and lighting apparatus Download PDF

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Publication number
CN110107822B
CN110107822B CN201910418419.1A CN201910418419A CN110107822B CN 110107822 B CN110107822 B CN 110107822B CN 201910418419 A CN201910418419 A CN 201910418419A CN 110107822 B CN110107822 B CN 110107822B
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Prior art keywords
heat dissipation
wind
heat
air
radiating
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CN110107822A (en
Inventor
叶伟炳
陈晓健
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Dongguan Wenyu Industrial Co Ltd
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Dongguan Wenyu Industrial Co Ltd
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Priority to CN201910418419.1A priority Critical patent/CN110107822B/en
Publication of CN110107822A publication Critical patent/CN110107822A/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F21K9/20—Light sources comprising attachment means
    • 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
    • F21V29/60—Cooling arrangements characterised by the use of a forced flow of gas, e.g. air
    • F21V29/67—Cooling arrangements characterised by the use of a forced flow of gas, e.g. air characterised by the arrangement of fans
    • F21V29/673—Cooling arrangements characterised by the use of a forced flow of gas, e.g. air characterised by the arrangement of fans the fans being used for intake
    • 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
    • F21V29/75—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with fins or blades having different shapes, thicknesses or spacing
    • 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
    • F21V29/83—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks the elements having apertures, ducts or channels, e.g. heat radiation holes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)

Abstract

The application relates to a heat dissipation device and lighting equipment, wherein the heat dissipation device comprises a heat dissipation body and a plurality of heat dissipation sheet bodies positioned on the heat dissipation body; each radiating fin body is provided with at least three air channels and at least one wind shielding position, and each radiating fin body is provided with an air channel opening at the edge position of the radiating body; the at least one wind shielding position is arranged at the edge position of the heat dissipation body, and the at least one wind channel is arranged towards the at least one wind shielding position. Through designing wind channel and wind-break position, irregularly arranged's heat dissipation lamellar body has been formed, make the air current compel the switching-over at the position of keeping out the wind, on the one hand, be favorable to prolonging the air current contact time in order to promote the heat conduction effect between solid-state heat dissipation lamellar body and the gaseous state air, on the other hand, be favorable to make full use of air in order to further promote the convection heat dissipation effect on the basis of solid-state air conduction, thereby realized taking away the effect of the heat on the heat dissipation device as early as possible, and then be favorable to promoting the radiating effect of treating the heat dissipation target, to the LED lamp, the true effective life.

Description

Heat dissipation device and lighting apparatus
Technical Field
The present application relates to the field of heat dissipation, and in particular, to a heat dissipation device and an illumination apparatus.
Background
As shown in fig. 1, in a die-cast Light Emitting Diode (LED) heat dissipation product, heat dissipation fins 110 are all arranged in a straight line in the same direction or in a regular arrangement in which the heat dissipation fins are connected to the tail end in the same shape; when wind passes through the radiating fins, the heat is not taken away with the maximum effect, so that the radiating effect is not ideal, the heat radiation of the lamp arranged in the radiating fins is not good, the service life of the lamp is not long, and the lamp with high power cannot be arranged.
The die-casting radiating fin products which are arranged in the regular direction on the market have poor radiating effect, and particularly in the natural radiating environment without a fan, some high-power lamps cannot achieve the required radiating effect after being arranged inside, and the radiating effect is poor, so that the service life of the lamps is far shorter than the time required by design.
Disclosure of Invention
In view of the above, there is a need for a heat dissipation device and a lighting apparatus.
A heat dissipation device comprises a heat dissipation body and a plurality of heat dissipation sheet bodies positioned on the heat dissipation body;
each radiating fin body is provided with at least three air channels and at least one wind shielding position, and an air channel opening is formed at the edge position of the radiating body of each radiating fin body;
the wind shielding position is arranged at the edge of the heat dissipation body, and the wind channel is arranged towards the wind shielding position.
Above-mentioned heat dissipation device, through design wind channel and fender wind position, irregularly arranged heat dissipation lamellar body has been formed, make the air current compel the switching-over at the position of keeping out the wind, be favorable to prolonging the air current contact time in order to promote the heat conduction effect between solid state heat dissipation lamellar body and the gaseous state air on the one hand, on the other hand is favorable to make full use of air in order to further promote the convection heat dissipation effect on the basis of solid gas conduction, no matter natural wind or fan wind all can be suitable for on the one hand again, thereby realized taking away the effect of the heat on the heat dissipation device as early as possible, and then be favorable to promoting the radiating effect of treating the heat dissipation target, to the LED lamp, the true effective.
In one embodiment, a plurality of air duct openings are formed at the edge of the heat dissipation body of each heat dissipation sheet body of the heat dissipation device.
In one embodiment, a wind nest area is formed by collecting part of the wind channel openings on the heat dissipation body, and a wind channel formed by part of the heat dissipation sheet bodies is communicated with the wind nest area.
In one embodiment, the heat dissipation body is further provided with a wind table area at the edge position of the wind nest area.
In one embodiment, portions of the heat sinks are connected to each other.
In one embodiment, an arc-shaped wind receiving surface is arranged at the edge position of at least part of the heat dissipation fin body.
In one embodiment, the heat sink body has a shape that is small at the top and large at the bottom.
In one embodiment, the heat dissipation body is provided with at least one mounting groove, at least one via hole or at least three mounting holes.
In one embodiment, each of the heat dissipation fin bodies is symmetrically arranged;
at least part of the heat dissipation sheet body is provided with an air inlet;
a step part is arranged at the edge position of the heat dissipation body close to the air passing opening and close to the heat dissipation body;
a groove is formed in the heat dissipation sheet body, and the extending direction of the groove is consistent with the extending direction of the heat dissipation sheet body;
at least two of the heat dissipation sheet bodies are connected and formed with bent parts or at least one of the heat dissipation sheet bodies is provided with a bent part, and the grooves are conducted at the bent parts;
the two adjacent air channels form an included angle of 0-60 degrees, and each air channel forms at least five different included angles;
the air duct close to the wind blocking position forms an included angle of 60-90 degrees with the wind blocking position;
part of the radiating fins are mutually connected and arranged, a composite radiating fin with a turning shape and a plurality of closed air channels is formed on the radiating body, at least one radiating fin body is provided with an air passing opening in each radiating fin body which is mutually connected and arranged, and the composite radiating fin is provided with at least two closed air channels and at least one open air channel.
An illumination apparatus comprising an illumination device and any one of the heat dissipating devices, the illumination device being disposed in contact with the heat dissipating body of the heat dissipating device.
Above-mentioned lighting apparatus, because the radiating effect is better, be favorable to prolonging lighting device's life.
Drawings
Fig. 1 is a schematic view of a heat dissipating device according to a conventional art.
Fig. 2 is a schematic structural diagram of an embodiment of the present application.
Fig. 3 is a schematic structural view of another angle of the embodiment shown in fig. 2.
Fig. 4 is an enlarged schematic view of the embodiment shown in fig. 3 at a.
Fig. 5 is a schematic structural view of another angle of the embodiment shown in fig. 2.
Fig. 6 is an enlarged schematic view of the embodiment shown in fig. 5 at B.
Fig. 7 is a schematic structural diagram of another embodiment of the present application.
Fig. 8 is an enlarged schematic view of the embodiment of fig. 7 at C.
Fig. 9 is a schematic structural diagram of another embodiment of the present application.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present application more comprehensible, embodiments accompanying the present application are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. This application is capable of embodiments in many different forms than those described herein and that modifications may be made by one skilled in the art without departing from the spirit and scope of the application and it is therefore not intended to be limited to the specific embodiments disclosed below.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
In one embodiment of the present application, a heat dissipation device includes a heat dissipation body and a plurality of heat dissipation sheet bodies located on the heat dissipation body; each radiating fin body is provided with at least three air channels and at least one wind shielding position, and an air channel opening is formed at the edge position of the radiating body of each radiating fin body; the wind shielding position is arranged at the edge of the heat dissipation body, and the wind channel is arranged towards the wind shielding position. Above-mentioned heat dissipation device, through design wind channel and fender wind position, irregularly arranged heat dissipation sheet body has been formed, make the air current compel the switching-over at the position of keeping out the wind, be favorable to prolonging the air current contact time in order to promote the heat conduction effect between solid-state heat dissipation sheet body and the gaseous state air on the one hand, on the other hand is favorable to make full use of air in order to further promote the convection heat dissipation effect on the basis of solid-gas conduction, thereby realized taking away the effect of the heat on the heat dissipation device as early as possible, and then be favorable to promoting the radiating effect of treating the heat dissipation target, to the LED lamp, the true effective life of LED lamp.
In one embodiment, a heat dissipation device includes a part of or the entire structure of the following embodiments; that is, the heat dissipation device includes some or all of the following technical features. In one embodiment, a heat dissipation device includes a heat dissipation body and a plurality of heat dissipation sheet bodies located on the heat dissipation body. The specific shapes of the fin bodies may be the same or different, and further, in one embodiment, the shapes of the fin bodies are different to form an irregular arrangement, so that the air flow contact time is further prolonged. In one embodiment, the heat dissipation sheet body has a shape with a small top and a large bottom, that is, a part close to the heat dissipation body is larger, and a part far away from the heat dissipation body is smaller; that is, the portion close to the heat dissipating body is thicker, and the portion far from the heat dissipating body is thinner. Further, in one embodiment, the heat dissipation sheet body is provided with a groove, and the extending direction of the groove is consistent with the extending direction of the heat dissipation sheet body; in one embodiment, a heat dissipation device includes a heat dissipation body and a plurality of heat dissipation sheet bodies located on the heat dissipation body; each radiating fin body is provided with at least three air channels and at least one wind shielding position, and an air channel opening is formed at the edge position of the radiating body of each radiating fin body; a groove is formed in the heat dissipation sheet body, and the extending direction of the groove is consistent with the extending direction of the heat dissipation sheet body; the at least one wind shielding position is arranged at the edge position of the heat dissipation body, and the at least one air duct is arranged towards the at least one wind shielding position; the rest of the examples are analogized. In one embodiment, the heat dissipation sheet body is provided with a plurality of grooves in parallel, and the design is easy to realize in product processing. Such design is favorable to on the one hand leading the heat of heat dissipation body into the fin body fast under material saving's prerequisite, and on the other hand has promoted the area of contact between solid-state fin body and the gaseous state air better. Further, in one embodiment, at least one of the heat dissipation sheet bodies has a bent portion; in one embodiment, at least two of the heat dissipation sheet bodies are connected or integrated, and a bending part is formed; in one embodiment, the groove is arranged at the bending part in a conducting manner, that is, the groove is a through groove; in one embodiment, at least two of the heat dissipation sheet bodies are connected and formed with a bending part or at least one of the heat dissipation sheet bodies is provided with a bending part, and the groove is conducted at the bending part; such design, on the one hand the kink has formed the position of keeping out the wind for the air current is forced the switching-over at the kink, is favorable to prolonging air current contact time, and on the other hand can pass through the recess and see out partly air current, is favorable to promoting the heat conduction effect between solid-state heat dissipation lamellar body and the gaseous state air, consequently has better radiating effect, and then is favorable to promoting the radiating effect of treating the heat dissipation target.
In one embodiment, the heat dissipation body is provided with at least one mounting groove; and/or, in one embodiment, the heat dissipation body is provided with at least one via hole; and/or, in one embodiment, the heat dissipation body is provided with at least three mounting holes. The heat dissipation body is fixedly arranged on an external environment or a lighting device or a target product needing heat dissipation through the mounting groove or the mounting hole. The design of via hole is favorable to promoting lighting device or the inside hot-air of the target product that needs the heat dissipation to see through and realize the convection current radiating effect.
In one embodiment, each of the heat dissipation fin bodies is symmetrically arranged; in one embodiment, each of the cooling fins is arranged in axial symmetry; in one embodiment, each of the heat dissipation fin bodies is arranged in a central symmetry manner. In one embodiment, the heat dissipation bodies are arranged in a central symmetry manner, the heat dissipation sheet bodies are arranged in a central symmetry manner, and two symmetry centers are arranged in a superposition manner.
Each radiating fin body is provided with at least three air channels and at least one wind shielding position, and an air channel opening is formed at the edge position of the radiating body of each radiating fin body; further, in one embodiment, in each of the heat dissipation sheet bodies, an air duct is formed between two adjacent heat dissipation sheet bodies, and at least three air ducts are formed between the heat dissipation sheet bodies. In one embodiment, a plurality of air duct openings are formed at the edge of the heat dissipation body of each heat dissipation sheet body of the heat dissipation device. The wind channel opening comprises a wind inlet channel opening and a wind outlet channel opening, which are usually distinguished according to the wind inlet and the wind outlet direction, but are not absolute, and for the lighting equipment adopting the fan to supply wind, the heat dissipation sheet bodies are formed at the edge positions of the heat dissipation body, and vice versa, and for the lighting equipment adopting the fan to draw wind, the heat dissipation sheet bodies are formed at the edge positions of the heat dissipation body and are provided with the wind inlet channel openings. Further, in one embodiment, the two adjacent air ducts form an included angle of 0 to 60 degrees. In one embodiment, two adjacent air ducts form an included angle of 0 degree, i.e. are arranged in parallel. In one embodiment, the two adjacent air ducts form an included angle of 10, 20, 30, 40, 50 or 60 degrees. Further, in one embodiment, each of the air channels forms at least five different included angles. The design is favorable for forming irregularly arranged radiating fin bodies, so that airflow can be forced to change direction by the radiating fin bodies on two sides of the air duct while the wind shielding position is forced to change direction, and the design is favorable for adapting to the application environment of natural wind or fan wind, and the effect of taking away heat on a radiating device as soon as possible is realized.
The wind shielding position is arranged at the edge of the heat dissipation body, and the wind channel is arranged towards the wind shielding position. Further, in one embodiment, a protruding portion is further disposed at an edge of the heat dissipation body, so as to further improve the airflow reversing effect. Further, in one embodiment, a boss portion is further provided at an edge position of the heat dissipation body for further improving the airflow reversing effect, and in one embodiment, the boss portion has a triangular or rectangular shape. The wind shielding positions are formed by radiating fins, further, in one embodiment, each wind shielding position is formed by one radiating fin, or each wind shielding position is formed by two radiating fins, or each wind shielding position is formed by at least two radiating fins; thus, the wind shielding position can be flexibly designed. In one embodiment, the wind shield is flat, or bent, or inclined; further, in one embodiment, the wind channel close to the wind blocking position forms an included angle of 60 to 90 degrees with the wind blocking position. In one embodiment, the wind channel close to the wind blocking position forms an included angle of 60, 70, 80 or 90 degrees with the wind blocking position. The design is favorable for promoting the forced reversing of the airflow at the wind shielding position.
In one embodiment, a wind nest area is formed by collecting part of the wind channel openings on the heat dissipation body, and a wind channel formed by part of the heat dissipation sheet bodies is communicated with the wind nest area. Further, in one embodiment, the wind nest area is disposed offset from the central area of the heat dissipation body, i.e., the wind nest area is not centered, e.g., the heat dissipation body is circular, the wind nest area does not include a center of circle, or the center of the wind nest area is offset from the center of circle; such design, the wind nest area is used for playing the effect of local wind that gathers, make the wind pressure that the wind channel caused produce certain change in the wind nest area, no matter natural wind or fan wind can all reach the effect of an irregular assignment, the time that extension air current and heat dissipation body are close to the side of heat dissipation lamellar body and each heat dissipation lamellar body contact has been promoted, to small-size heat dissipation device, this time probably is negligible, but to the great heat dissipation device of area, this time is exactly the important factor that influences the radiating efficiency, cooperate other technological improvements of this application, be favorable to promoting the radiating effect of the target of treating the heat dissipation, to the LED lamp, the true effective life of LED lamp has been promoted. In one embodiment, the heat dissipation body is further provided with a wind table area at the edge position of the wind nest area. Further, in one embodiment, the wind nest area is pear-shaped, or the wind nest area is a combination of trapezoids; in one embodiment, the number of the wind nest areas is one, and the number of the wind platform areas is multiple. In one embodiment, a plurality of the wind platform areas are arranged around the wind nest area at intervals. Such design, through the overall arrangement design in wind nest area and wind platform district, has increased the irregularity degree of heat dissipation body and heat dissipation lamellar body to the dimension that is close to the heat dissipation body at the heat dissipation lamellar body has increased the position of air current switching-over, and the position of air current switching-over that the dimension that the cooperation heat dissipation lamellar body extended along the heat dissipation body realized is favorable to prolonging the air current contact time in order to promote the heat conduction effect between solid-state heat dissipation lamellar body and the gaseous state air. Further, in one embodiment, the edge of the wind table region has a slope, on one hand, to reduce the safety hazard in production or application as much as possible, and on the other hand, to increase the contact surface area and thus improve the heat exchange effect.
In one embodiment, a part of the heat radiating fins are mutually connected and arranged; further, in one embodiment, a part of the heat dissipation fins are connected with each other and form a composite heat dissipation fin with a turning shape and a plurality of closed air ducts on the heat dissipation body. Further, in one embodiment, among the heat dissipation plate bodies connected to each other, at least one of the heat dissipation plate bodies is provided with an air inlet, and the composite heat dissipation plate is formed with at least two closed air channels and at least one open air channel. In one embodiment, a portion of the heat dissipation fins are connected to each other and form a composite heat dissipation fin having a turning shape and a plurality of closed air channels on the heat dissipation body, at least one of the heat dissipation fin bodies connected to each other is provided with an air passing opening, and the composite heat dissipation fin is formed with at least two closed air channels and at least one open air channel. Further, in one embodiment, the heat sink body has a thickened portion between two heat sink bodies of the composite heat sink, and the thickened portion and the two heat sink bodies form a recessed area. The design can be matched with various air channels including the combination of an open air channel and a closed air channel, and the arrangement irregularity of the radiating fin bodies is increased, so that the forced reversing positions of the air flow are more, and the contact time of the air flow is prolonged to improve the heat conduction effect between the solid radiating fin bodies and the gaseous air.
It is important to point out that the conventional heat dissipation device usually tries to improve the convection heat dissipation effect, i.e. needs to send out hot air quickly; and this application each embodiment has changed this kind of trade prejudice to a certain extent, and it is anti-its way and has proposed the extension air current contact time with the heat conduction effect between promotion solid-state heat dissipation lamellar body and the gaseous state air on the way, is applicable to the application environment of various difference in temperature on the one hand, must admittedly admit that the radiating effect is better some under the prerequisite that the difference in temperature is big, and on the other hand is applicable to passive nature heat dissipation or active fan cooling, can promote the true effective life of LED lamp etc. the great relevant product of calorific capacity.
In one embodiment, at least part of the heat dissipation sheet body is provided with an air inlet; further, in one embodiment, each of the heat dissipation fin bodies is provided with an air vent. The shape and position of the air vents are not limited, and further, in one embodiment, each air vent comprises a circular shape, a rectangular shape, a pentagonal shape or an irregular shape; and/or the minimum distances between the at least two air passing openings and the heat dissipation body are different; in one embodiment, the minimum distance between each air passing opening and the heat dissipation body is different. The design is favorable for increasing the reversing of the airflow, so that the contact time of the airflow and the radiating fin body is prolonged, and the design matched with the composite radiating fin has more ideal heat conduction effects of solid and gas states. In one embodiment, a step part is arranged at the position of the heat dissipation body, which is close to the edge of the heat dissipation body and is beside the air passing opening; the height of the step part can also be called as thickness, which is a design mode that one part of the heat dissipation body is thicker than other parts, namely, the heat dissipation body is thickened at the step part to form a shape which is uneven with other positions, so that the air flow reversing position is more, and the contact time of the air flow and the heat dissipation sheet body is more favorably prolonged. Further, in one embodiment, the edge of the step portion has a slope, on one hand, to reduce the potential safety hazard in production or application as much as possible, and on the other hand, to increase the contact surface area and thus improve the heat exchange effect.
In one embodiment, an arc-shaped wind receiving surface is arranged at the edge position of at least part of the heat dissipation fin body. In one embodiment, an arc-shaped wind receiving surface is arranged at the edge position of each heat dissipation fin body. The design of arc wind-engaging face, on the one hand avoid the edge too sharp to cause the production incident easily, on the other hand is favorable to the cooperation to have the heat dissipation lamellar body of big end up, makes the heat dissipation lamellar body part that is close to heat dissipation body position have lower wind speed and keep away from the heat dissipation lamellar body part that heat dissipation body position has bigger wind speed, further promotes the convection heat dissipation effect, thereby has realized taking away the effect of the heat on the heat sink device as early as possible.
In one embodiment, each of the heat dissipation fin bodies is symmetrically arranged; at least part of the heat dissipation sheet body is provided with an air inlet; a step part is arranged at the edge position of the heat dissipation body close to the air passing opening and close to the heat dissipation body; a groove is formed in the heat dissipation sheet body, and the extending direction of the groove is consistent with the extending direction of the heat dissipation sheet body; at least two of the heat dissipation sheet bodies are connected and formed with bent parts or at least one of the heat dissipation sheet bodies is provided with a bent part, and the grooves are conducted at the bent parts; the two adjacent air channels form an included angle of 0-60 degrees, and each air channel forms at least five different included angles; the air duct close to the wind blocking position forms an included angle of 60-90 degrees with the wind blocking position; part of the radiating fins are mutually connected and arranged, a composite radiating fin with a turning shape and a plurality of closed air channels is formed on the radiating body, at least one radiating fin body is provided with an air passing opening in each radiating fin body which is mutually connected and arranged, and the composite radiating fin is provided with at least two closed air channels and at least one open air channel.
Further, in one embodiment, the heat dissipation device is a die casting, and the irregular arrangement of the heat dissipation fins on the die casting product enables the heat dissipation fins to contact more natural wind, so that the natural wind contacts the heat dissipation fins for a long time, and the heat on the heat dissipation fins is taken away as soon as possible; therefore, the working efficiency and the service life of the lamp cannot be influenced by overhigh temperature when the lamp works; the lamp with higher power can meet the design requirement when being installed on the die-casting product. In one of them embodiment of specific application, the heat dissipation device is made with die-casting ADC12 aluminum alloy material and is obtained, to some heat dissipation devices that can only adorn the lamp cup of 3 watts of power of tradition, adopt the heat dissipation device of the relevant embodiment of this application, under the prerequisite of equal material consumption, can adorn the lamp cup of 5 watts of power, and effective life increases to 30000 hours (half-life period) by 3000 hours (half-life period), can see that not only power has promoted, and real life-span has also been prolonged moreover, makes the lamp heat of dress inside distribute away more fast, has guaranteed the power and the life-span of lamp.
In one embodiment, as shown in fig. 2, the heat dissipation device includes a heat dissipation body 100 and a plurality of heat dissipation sheet bodies 110 disposed on the heat dissipation body; the plurality of heat dissipation sheet bodies 110 include a first heat dissipation sheet body 111, a second heat dissipation sheet body 112, a third heat dissipation sheet body 113, a fourth heat dissipation sheet body 114, a fifth heat dissipation sheet body 115, a sixth heat dissipation sheet body 116, a seventh heat dissipation sheet body 117, an eighth heat dissipation sheet body 118, and the like. The first heat sink sheet 111 is a composite heat sink sheet having a bent shape and a plurality of closed air channels, and the first heat sink sheet 111 is further connected to the second heat sink sheet 112. The lengths of the second fin body 112, the third fin body 113, the fifth fin body 115, the sixth fin body 116, and the seventh fin body 117 are sequentially reduced, and are substantially parallel to each other. The plurality of heat dissipation bodies form a first air duct 121, a second air duct 122, a third air duct 123, a fourth air duct 124, a fifth air duct 125, a sixth air duct 126 and a seventh air duct 127, and are all located at the edge of the heat dissipation body, the first air duct 121 and the second air duct 122 form an acute included angle, the sixth air duct 126 and the seventh air duct 127 also form an acute included angle, and the second air duct 122, the third air duct 123, the fourth air duct 124 and the fifth air duct 125 are arranged substantially in parallel with each other. The first heat dissipation sheet 111 and the fourth heat dissipation sheet 114 form a wind shielding position, and the wind shielding position formed by the fourth heat dissipation sheet 114 is disposed at the edge of the heat dissipation body 110; an air duct formed between two adjacent heat dissipation sheet bodies of the second heat dissipation sheet body 112, the third heat dissipation sheet body 113, the fifth heat dissipation sheet body 115, the sixth heat dissipation sheet body 116, and the seventh heat dissipation sheet body 117 is disposed toward a wind shielding position formed by the fourth heat dissipation sheet body 114. The edge of the heat dissipating body 100 is further provided with a protrusion 190, part of the air duct opening is converged on the heat dissipating body 100 to form an air duct area 150, and part of the air duct is connected with the air duct area 150. Referring to fig. 3, 4 and 5, the heat dissipation device further includes a ninth heat dissipation sheet body 119, the fourth heat dissipation sheet body 114 and the ninth heat dissipation sheet body 119 are disposed in axial symmetry, and air vents are disposed at positions of the fourth heat dissipation sheet body 114 and the ninth heat dissipation sheet body 119 close to the heat dissipation body 100; the eighth heat dissipating sheet 118 has a bending portion 152, and the heat dissipating body has four mounting holes, including a first mounting hole 141, a second mounting hole 142, a third mounting hole 143, and a fourth mounting hole 144. The heat dissipating body is provided with a plurality of via holes, such as a first via hole 145, a second via hole 146, a third via hole 147, etc., and if necessary, the via holes may also be mounting holes. An eighth air duct 128 is formed between the seventh heat dissipation sheet body 117 and the eighth heat dissipation sheet body 118, a twelfth air duct 132 is formed between the seventh heat dissipation sheet body 117 and the sixth heat dissipation sheet body 116, and the eighth air duct 128 is arranged in parallel with the twelfth air duct 132; a thirteenth air duct 133 is formed between the sixth fin body 116 and other fin bodies, and the thirteenth air duct 133 is disposed non-parallel to the eighth air duct 128 or the twelfth air duct 132. Referring to fig. 6, the seventh fin body 117 has a seventh arc-shaped wind receiving surface 191 at an edge thereof, and the sixth fin body 116 has a sixth arc-shaped wind receiving surface 192 at an edge thereof, and the eighth fin body 118 has an eighth arc-shaped wind receiving surface 193 at an edge thereof. In one embodiment, as shown in fig. 7, the edge of the heat dissipation body 100 is further provided with a triangular boss 194, and referring to fig. 8, the edge of the wind nest area 150 of the heat dissipation body 100 is further provided with a plurality of wind platform areas at intervals, including a first wind platform area 195, a second wind platform area 196 and a third wind platform area 197; the composite heat sink formed by the first heat sink sheet 111 and the second heat sink sheet 112 are connected to each other, and the heat sink body has a thickening portion 199 between the two heat sink sheets of the composite heat sink, and the thickening portion 199 and the two heat sink sheets enclose a recessed area 198. In each embodiment, the air table area is arranged between the two heat dissipation sheet bodies. In one embodiment, as shown in fig. 9, a plurality of fin bodies are protruded from the heat sink body 100, a ninth air duct 129 is formed between the protruding portions 190 and the composite fins formed by the first fin bodies 111, a tenth air duct 130 is formed between the middle fin bodies, and an eleventh air duct 131 is formed between the seventh fin body 117 having the seventh arc-shaped wind receiving surface 191 at the edge and the ninth fin body 119 having the ninth arc-shaped wind receiving surface 151.
An illumination apparatus comprising an illumination device and the heat dissipating device of any embodiment, the illumination device being disposed in contact with the heat dissipating body of the heat dissipating device. In one embodiment, the heat dissipation device is fixedly arranged on the lighting device through a mounting groove or a mounting hole of the heat dissipation device, and the heat dissipation body is arranged in contact with the lighting device. The lighting equipment has good heat dissipation effect, so that the service life of the lighting device is prolonged; its radiating device who adopts, through design wind channel and wind-break position, irregularly arranged's radiating fin body has been formed, make the air current be in the position of keeping out the wind and be compelled the switching-over, be favorable to prolonging the air current contact time in order to promote the heat conduction effect between solid-state radiating fin body and the gaseous state air on the one hand, on the other hand is favorable to the make full use of air in order to further promote the convection heat dissipation effect on the basis of solid gas conduction, no matter natural wind or fan wind all can be suitable for on the one hand again, thereby realized taking away the effect of the heat on the radiating device as early as possible, and then be favorable to promoting the radiating effect of treating the radiating object, to the LED lamp, the true effective.
Other embodiments of the present application further include a heat dissipation device and a lighting apparatus, which are formed by combining technical features of the above embodiments with each other and can be implemented.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the claims. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (10)

1. A heat dissipation device is characterized by comprising a heat dissipation body and a plurality of heat dissipation sheet bodies positioned on the heat dissipation body;
each radiating fin body is provided with at least three air channels and at least one wind shielding position, and an air channel opening is formed at the edge position of the radiating body of each radiating fin body;
the at least one wind shielding position is arranged at the edge position of the heat dissipation body, and the at least one air duct is arranged towards the at least one wind shielding position;
a plurality of air duct openings are formed at the edge position of the heat dissipation body of each heat dissipation sheet body of the heat dissipation device;
part of the air duct openings are converged on the heat dissipation body to form an air duct area, and the air duct formed by part of the heat dissipation sheet bodies is communicated with the air duct area;
the wind nest area is arranged deviating from the central area of the heat dissipation body;
all the heat dissipation sheet bodies are symmetrically arranged;
at least part of the heat dissipation sheet body is provided with an air inlet;
a step part is arranged at the edge position of the heat dissipation body close to the air passing opening and close to the heat dissipation body;
a groove is formed in the heat dissipation sheet body, and the extending direction of the groove is consistent with the extending direction of the heat dissipation sheet body;
at least two of the heat dissipation sheet bodies are connected and formed with bent parts or at least one of the heat dissipation sheet bodies is provided with a bent part, and the grooves are conducted at the bent parts;
the two adjacent air channels form an included angle of 0-60 degrees, and each air channel forms at least five different included angles;
the air duct close to the wind blocking position forms an included angle of 60-90 degrees with the wind blocking position;
part of the radiating fins are mutually connected and arranged, a composite radiating fin with a turning shape and a plurality of closed air channels is formed on the radiating body, at least one radiating fin body is provided with an air passing opening in each radiating fin body which is mutually connected and arranged, and the composite radiating fin is provided with at least two closed air channels and at least one open air channel.
2. The heat dissipating device of claim 1, wherein the heat sink bodies are shaped differently to form an irregular arrangement.
3. The heat spreader device of claim 1, wherein the heat spreader device is die cast.
4. The heat dissipating device of claim 1, wherein the heat dissipating body further comprises a wind platform region at an edge of the wind nest region.
5. The heat dissipating device of claim 1, wherein portions of the heat dissipating fins are interconnected.
6. The heat dissipating device of claim 1, wherein at least some of the fins have an arcuate wind-engaging surface at an edge thereof.
7. The heat dissipating device of claim 1, wherein the fin body has a shape that is small at the top and large at the bottom.
8. The heat dissipating device of claim 1, wherein the heat dissipating body defines at least one mounting groove, at least one via hole, or at least three mounting holes.
9. The heat sink device as claimed in any one of claims 1 to 8, wherein the heat sink body has an increased thickness between two fin bodies of the composite heat sink, and the increased thickness and the two fin bodies enclose a depression.
10. A lighting device characterized by comprising a lighting device and the heat dissipating device of any one of claims 1 to 9, the lighting device being disposed in contact with the heat dissipating body of the heat dissipating device.
CN201910418419.1A 2019-05-20 2019-05-20 Heat dissipation device and lighting apparatus Active CN110107822B (en)

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CN2724201Y (en) * 2004-07-06 2005-09-07 陈万添 Heat radiator structure
CN201690717U (en) * 2010-04-23 2010-12-29 广东伊莱斯电机有限公司 Radiator
CN202269138U (en) * 2011-09-06 2012-06-06 幸雄科技股份有限公司 Radiator with branched radiation structure
KR101178262B1 (en) * 2012-04-03 2012-08-29 김화자 Bulb-type led lighting fixtures
CN202791901U (en) * 2012-08-17 2013-03-13 徐州格利尔数码科技有限公司 Radiating shell for LED (Light-Emitting Diode) street lamp
CN204285396U (en) * 2014-12-10 2015-04-22 上海新干通通信设备有限公司 A kind of LED radiator
CN109673139B (en) * 2015-12-03 2020-05-29 深圳市大疆创新科技有限公司 Heat dissipation system and aircraft with same
CN207500932U (en) * 2017-11-24 2018-06-15 广州达森灯光股份有限公司 A kind of radiator and Projecting Lamp

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