CN217540686U - Radiator and light-emitting device - Google Patents

Abstract

The application provides a radiator and light emitting equipment, the radiator includes a plurality of fin and cooling tube. The radiating fins are arranged along the first direction, a radiating gap is defined between every two adjacent radiating fins, air guide holes are formed in the radiating fins, and the air guide holes penetrate through the corresponding radiating fins along the first direction. The radiating pipe is arranged through each radiating fin. Each air guide hole is configured to enable every two adjacent heat dissipation gaps to be communicated with each other. The application provides a radiator, the air current that air supply arrangement produced can be through the heat dissipation clearance between each fin, can take away the heat of each fin like this to cool down the fin. Particularly, when the air flow generated by the air supply device flows through the heat dissipation gaps, due to air pressure, the external air can enter the heat dissipation gaps along the first direction through the air guide holes, and the air flow passing through the heat dissipation gaps is increased, so that the heat exchange efficiency of the radiating fins is improved, and the integral heat dissipation effect of the radiator is further improved.

Description

Radiator and light-emitting device

Technical Field

The embodiment of the application relates to the technical field of heat dissipation devices, in particular to a heat radiator and a light-emitting device.

Background

The radiator comprises radiating pipes and radiating fins, wherein the radiating fins are arranged at intervals in a stacked mode, and the radiating pipes are arranged on the radiating fins in a transmission mode. The cooling tube can be directly or indirectly in taking the contact of radiating object to absorb object heat and transmit to the fin, the heat is gived off through the fin. The existing radiator has unsatisfactory heat dissipation effect.

SUMMERY OF THE UTILITY MODEL

The present application provides a heat sink and a light emitting apparatus, which can solve the above problems.

In order to solve the technical problem, the application adopts a technical scheme that: a radiator is provided, which comprises a plurality of radiating fins and radiating pipes. The radiating fins are arranged along the first direction, a radiating gap is defined between every two adjacent radiating fins, air guide holes are formed in the radiating fins, and the air guide holes penetrate through the corresponding radiating fins along the first direction. The radiating pipe is arranged through each radiating fin. Each air guide hole is configured to enable every two adjacent heat dissipation gaps to be communicated with each other.

In some embodiments, the air guiding holes are at least partially overlapped when viewed along the first direction, so that the air guiding holes jointly define an air guiding channel which is communicated with the heat dissipation gaps along the first direction.

In some embodiments, the air guide holes are completely coincident when viewed in the first direction.

In some embodiments, the heat sink includes a plurality of heat pipes, and each air guiding hole is located between at least two heat pipes.

In some embodiments, each air guiding hole is strip-shaped, and the number of the heat dissipation pipes at two sides of each air guiding hole is the same.

In some embodiments, each of the heat dissipation fins includes a plurality of air guiding holes, all of which define a plurality of air guiding channels, and each of the air guiding channels communicates with each of the heat dissipation gaps along the first direction.

In some embodiments, each of the heat dissipation fins includes three air guiding holes, all the air guiding holes are in a strip shape, all the air guiding holes are arranged in an extending manner along a second direction, and the second direction is perpendicular to the first direction;

all the air guide holes jointly define three air guide channels which are communicated with the heat dissipation gaps along the first direction.

In some embodiments, each of the heat dissipation fins includes a first heat dissipation fin and a second heat dissipation fin, the first heat dissipation fin and the second heat dissipation fin are arranged adjacently, a first heat dissipation gap is defined between the first heat dissipation fin and the second heat dissipation fin, a first air guiding hole is formed in the first heat dissipation fin, a second air guiding hole is formed in the second heat dissipation fin, and the heat dissipation tube includes a first heat conduction section located in the first heat dissipation gap;

observed along the first direction, the first heat conduction section is arranged between the first air guide hole and the second air guide hole.

The second aspect of the present application also provides a light emitting apparatus comprising:

the heat sink of any of the above;

an air supply device for generating airflow flowing towards each heat dissipation gap along a third direction, wherein the second direction is vertical to the first direction,

and a light emitting device in contact with the heat sink.

In some embodiments, the air blowing device is configured to enable the air flow guided to each heat dissipation gap to pass through each air guiding hole and be guided out of the radiator along the third direction.

The application provides a radiator, the air current that air supply arrangement produced can be through the heat dissipation clearance between each fin, can take away the heat of each fin like this to cool down the fin. Especially, the inside of each fin is equipped with the wind-guiding hole in this application, and each wind-guiding hole switches on each heat dissipation clearance along first direction respectively, when making the air current that air supply arrangement produced flow through the heat dissipation clearance like this, because the reason of atmospheric pressure, outside air can be through each wind-guiding hole and in following each heat dissipation clearance of first direction entering or outflow, has increased the airflow through each heat dissipation clearance to the heat exchange efficiency of fin has been promoted, and then has promoted the holistic radiating effect of radiator.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required to be used in the embodiments of the present application will be briefly described below, and it is apparent that the drawings described below are only some embodiments of the present application.

Fig. 1 is a perspective view of a heat sink according to a first embodiment of the present application;

fig. 2 is a perspective view illustrating the combination of each radiating fin and the radiating pipe of the radiator according to the first embodiment of the present application;

fig. 3 is a schematic front view of fins of a heat sink according to a first embodiment of the present application;

FIG. 4 is a schematic front view of a heat sink provided in a second embodiment of the present application, wherein three fins are arranged at intervals;

fig. 5 is a schematic front view of a heat sink provided in a third embodiment of the present application, wherein three fins are arranged at intervals;

fig. 6 is a cross-sectional view of a radiator provided by a fourth embodiment of the present application, wherein three radiating fins are combined with parts of two radiating tubes; observing along the first direction X, wherein the air guide holes of the three radiating fins are completely overlapped;

fig. 7 is a cross-sectional view of a radiator provided by a fifth embodiment of the present application, wherein three radiating fins are combined with parts of two radiating tubes; observing along a first direction X, and partially overlapping the air guide holes of the three radiating fins;

fig. 8 is a cross-sectional view of a radiator provided by a sixth embodiment of the present application, wherein three radiating fins are combined with parts of two radiating tubes; observing along the first direction X, wherein the air guide holes of every two adjacent radiating fins are not overlapped;

fig. 9 is a cross-sectional view of a radiator in which three radiating fins are combined with a part of components of a radiating pipe according to a fifth embodiment of the present application; viewed along the first direction X, the first heat conduction section is positioned between the first air guide hole and the second air guide hole;

fig. 10 is a perspective view of a heat sink, a light-emitting device and an air blowing device according to a first embodiment of the present application;

fig. 11 is a schematic perspective view of a light-emitting device according to a first embodiment of the present application.

Detailed Description

To facilitate an understanding of the present application, the present application is described in more detail below with reference to the figures and the detailed description. It will be understood that when an element is referred to as being "secured to" 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 be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for descriptive purposes only.

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 present application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

The conventional heat sink includes a plurality of heat dissipating fins arranged at intervals and a heat dissipating pipe penetrating through each of the heat dissipating fins. The air supply device guides the airflow to the gaps among the radiating fins and then guides the airflow out of the radiator, so that the heat on the radiating fins is taken away. The applicant finds that the radiating pipe is in contact with the part to be radiated, and the radiating pipe absorbs heat on the part to be radiated and then transfers the heat to each radiating fin. However, the distance between the radiating fins and the part to be radiated is different, so that the heat of the radiating pipe obtained by each radiating fin is different, the heat of the air between each radiating gap (the gap between two adjacent radiating fins) is different, and the radiating effect is poor due to the fact that the radiating gaps are not communicated with each other.

Referring to fig. 1 to 10, the present application provides a heat sink 100, wherein the heat sink 100 can achieve a better heat dissipation effect. The radiator 100 includes a plurality (two or more) of radiating fins 120 and radiating pipes 110.

The number, material, shape, etc. of the heat dissipation fins 120 are determined according to specific requirements, and are not described herein. The fins 120 are arranged in the first direction X. The fins 120 may be arranged in parallel or at a smaller angle (e.g., between 0 ° and 10 °). Each of the heat dissipation fins 120 may be perpendicular to the first direction X, or may be arranged obliquely to the first direction X, see fig. 1 to 4, in which embodiment each of the heat dissipation fins 120 is perpendicular to the first direction X. Referring to fig. 5, in this embodiment, each of the fins 120 is arranged obliquely to the first direction X. Each two adjacent heat dissipation fins 120 define a heat dissipation gap 130 therebetween, and an air flow generated by the air supply device 300 can pass through each heat dissipation gap 130, thereby removing heat from the heat dissipation fins 120. Specifically, in one embodiment, the heat dissipation fins 120 may be arranged at equal intervals, that is, the heat dissipation fins 120 are not directly connected (may be indirectly connected through the heat dissipation pipe 110), and the gap between the heat dissipation fins 120 is the heat dissipation gap 130. In another embodiment, every two adjacent fins 120 may contact each other, and specifically, a portion of one of the fins 120 may be bent to extend along the first direction X and abut against the adjacent fin 120, thereby defining the size of the heat dissipation gap 130. For convenience of description, the width of each heat dissipation gap 130 along the first direction X may be equal or different, and for convenience of description, the width of each heat dissipation gap 130 along the first direction X is equal to the width of each heat dissipation fin 120 perpendicular to the first direction X.

In particular, in the present application, each of the fins 120 is provided with an air guiding hole 121 inside. The air guiding hole 121 is defined as follows: in any direction perpendicular to the first direction X, the air guiding holes 121 are spaced from each edge of the heat sink 120, and the air guiding holes 121 are not exposed to the edge of the heat sink 120. The air guide holes 121 are disposed inside the heat dissipation fins 120, so that the airflow passing through the air guide holes 121 flows in the heat dissipation gaps 130 in a more stable state.

Each air guiding hole 121 is a through hole, that is, each air guiding hole 121 penetrates through the corresponding heat sink 120 along the first direction X. Each air guiding hole 121 is configured to enable each two adjacent heat dissipation gaps 130 to penetrate through each other, so that the airflow can flow through each two adjacent heat dissipation gaps 130 along the first direction X.

The heat pipe 110 is disposed through each of the heat sinks 120. The number of the heat pipes 110 may be determined according to specific requirements, in the embodiment, referring to fig. 1 to 3, the heat sink 100 includes twelve heat pipes 110, and the ends of each two heat pipes 110 are connected to the same bent pipe. It should be noted that, in the present application, when the same pipe body passes through each of the radiating fins 120 a plurality of times by bending, the number of times that the pipe body passes through each of the radiating fins 120 corresponds to the number of radiating pipes 110 included in the pipe body. For example, in the present embodiment, as shown in fig. 2, the radiator 100 comprises six tubes, each tube passes through each heat sink 120 twice, that is, the radiator 100 in the present embodiment comprises twelve heat pipes 110, and each tube comprises two heat pipes 110. The heat pipe 110 absorbs heat from a heat generating component, transfers the heat to the heat sinks 120, and dissipates the heat through the heat sinks 120, thereby achieving a heat dissipation effect of the heat sink 100 on the heat generating component.

In the heat sink 100 provided by the present application, the air flow generated by the air supply device 300 can pass through the heat dissipation gaps 130 between the heat dissipation fins 120 along the direction perpendicular to the first direction X, so that the heat of the heat dissipation fins 120 can be taken away to cool the heat dissipation fins 120. Particularly, each air guiding hole 121 respectively communicates with each heat dissipation gap 130 along the first direction X, so that when an air flow generated by the air supply device 300 flows through the heat dissipation gaps 130 along a direction perpendicular to the first direction X, due to air pressure, external air can enter or flow out of each heat dissipation gap 130 along the first direction X through each air guiding hole 121, on one hand, the air flow passing through each heat dissipation gap 130 is increased, so that the heat exchange efficiency of the heat dissipation fins 120 is improved, on the other hand, the heat of the air at the positions of each heat dissipation gap 130 can be more balanced, and further, the overall heat dissipation effect of the heat sink 100 is improved.

Each heat sink 120 may have one air guiding hole 121, or may have a plurality of air guiding holes 121. When each of the heat dissipation fins 120 has a plurality of air guiding holes 121, the number of the air guiding holes 121 on each of the heat dissipation fins 120 may be the same or different. The shapes of the air guiding holes 121 may be the same or different, and the air guiding holes 121 may be circular holes, square holes, or other polygonal holes for the single air guiding hole 121. In this embodiment, referring to fig. 1 to 3, each heat dissipation plate 120 is provided with three air guiding holes 121, the shapes of the air guiding holes 121 are the same, each air guiding hole 121 is in a strip shape, and each air guiding hole 121 extends along a direction perpendicular to the first direction X (that is, the length direction of each air guiding hole 121 is perpendicular to the first direction X). For convenience of description, the second direction Y is defined below, and the second direction Y is perpendicular to the first direction X. The longitudinal direction of each air guiding hole 121 is parallel to the second direction Y.

The air guiding holes 121 of the fins 120 may or may not overlap each other when viewed in the first direction X. In order to make the airflow passing through the air guiding holes 121 along the first direction X smoother, in an embodiment, when viewed along the first direction X, the air guiding holes 121 are at least partially overlapped, so that the air guiding holes 121 jointly define an air guiding channel 140 communicating with the heat dissipating gaps 130 along the first direction X. In other words, no matter how many air guiding holes 121 are formed in each of the fins 120, for the whole of the fins 120, at least one air guiding channel 140 extending along the first direction X penetrates each of the fins 120, the air guiding channel 140 is defined by one of the air guiding holes 121 formed in each of the fins 120, and each of the air guiding holes 121 at least partially overlaps along the first direction X. In other words, the orthographic projections of the air guiding holes 121 in the plane perpendicular to the first direction X at least partially overlap. In this scheme, the air current can follow the straight line extension when each radiating gap 130 flows through, and it is more unobstructed to flow, and the air current resistance is littleer, can make the heat of the air in each radiating gap 130 more balanced, has promoted the holistic radiating effect of radiator 100.

Further, in an embodiment, referring to fig. 6, each of the heat dissipation fins 120 has a wind guiding hole 121, and when viewed along the first direction X, the wind guiding holes 121 defining the wind guiding channel 140 completely coincide with each other. That is, the air guide holes 121 have the same shape and size, and the orthographic projections of the air guide holes 121 in the plane perpendicular to the first direction X are all completely overlapped. In addition, the arrangement positions of the air guide holes 121 on the heat dissipation fins 120 are also completely the same, which facilitates the batch processing of the air guide holes 121 and reduces the processing cost. On the other hand, the airflow can further flow more smoothly through the heat dissipation gaps 130, and the overall heat dissipation effect of the heat sink 100 is improved.

When each of the heat dissipation fins 120 has a plurality of air guiding holes 121, each of the air guiding holes 121 may define only one air guiding channel 140 (defined as a channel through which an air flow can pass through each of the heat dissipation fins 120 in a straight line) extending along the first direction X, or may define a plurality of air guiding channels 140 extending along the first direction X. In this embodiment, referring to fig. 1 to 3, each of the fins 120 is provided with three air guiding holes 121, and the air guiding holes 121 together define three air guiding channels 140 extending along the first direction X. This scheme can further make the air current can be more unobstructed when each heat dissipation clearance 130 flows through, has promoted the holistic radiating effect of radiator 100.

The applicant has found that when the air flow passes through each heat dissipation gap 130, the heat dissipation effect is better if the air flow can exchange heat with the heat dissipation pipe 110 located in each heat dissipation gap 130. In order to achieve a better heat dissipation effect, in an embodiment, the heat sink 100 includes a plurality of heat dissipation tubes 110, and each air guiding hole 121 is located between at least two heat dissipation tubes 110. In this embodiment, the heat exchange effect with the at least two heat pipes 110 can be balanced when the air flow passes through the heat dissipation gaps 130. Thereby improving the heat dissipation effect of the heat sink 100.

In order to make the heat exchange between the heat dissipation pipes 110 and the air flow passing through the air guiding holes 121 more uniform, referring to fig. 3, in the present embodiment, the number of the heat dissipation pipes 110 on both sides of the elongated air guiding hole 121 on each heat sink 100 is the same, twelve heat dissipation pipes 110 are provided in the heat sink 100, and six heat dissipation pipes 110 are respectively provided on both sides of each air guiding hole 121. In this embodiment, each heat dissipation tube 110 can exchange heat with the air flow passing through each air guiding hole 121 more uniformly, so as to further improve the heat dissipation effect of the heat sink 100.

The applicant considers that, in order to enable the air flow guided out of the heat sink 100 along the first direction X to exchange heat sufficiently, on one hand, each air guiding hole 121 can define an air guiding channel 140 extending along the first direction X, so as to accelerate the flowing efficiency of the air, and on the other hand, the air flow can also flow through each heat dissipating pipe 110 before flowing out of the heat sink 100 along the first direction X, so as to enable the air flow to take away more heat of the heat dissipating pipe 110. In view of this, in one embodiment, referring to fig. 9, each fin 120 includes a first fin 150 and a second fin 160, the first fin 150 being disposed adjacent to the second fin 160. The first heat sink 150 and the second heat sink 160 may be any two adjacent heat sinks 120 of the heat sink 100, and the arrangement of the first heat sink 150 and the second heat sink 160 adjacent to each other means that the first heat sink 150 and the second heat sink 160 are separated by only one heat dissipation gap 130. For convenience of distinction, the heat dissipation gap 130 defined between the first heat sink 150 and the second heat sink 160 is referred to as a first heat dissipation gap 170, the air guiding hole 121 formed on the first heat sink 150 is referred to as a first air guiding hole 151, and the air guiding hole 121 formed on the second heat sink 160 is referred to as a second air guiding hole 161. The portion of the radiating pipe 110 located in the first radiating gap 170 is referred to as a first heat conducting section 111. In one embodiment, the first heat conducting section 111 is disposed between the first wind guiding hole 151 and the second wind guiding hole 161 as viewed along the first direction X. By the structure, the airflow entering the first heat dissipation gap 170 from the first air guide hole 151 flows through the first heat conduction section 111 and then is led out through the second air guide hole 161 (or the airflow entering the first heat dissipation gap 170 from the second air guide hole 161 flows through the first heat conduction section 111 and then is led out through the first air guide hole 151), so that the airflow led out of the radiator 100 along the first direction X can exchange heat with the first heat conduction section 111 more fully, and the heat dissipation efficiency of the radiator 100 is improved.

In particular, the heat sink 100 may satisfy the above-described structure only for the first fin 150 and the second fin 160, or may satisfy the above-described structure for all the fins 120. When all the fins 120 of the heat sink 100 meet the above requirement, the orthographic projections of the heat conducting holes of every two adjacent fins 120 in the plane perpendicular to the first direction X are not overlapped completely, and the air flow passes through at least one of the heat dissipating pipes 110 in the process of flowing from the heat conducting hole of one of the fins 120 to the heat conducting hole of the other adjacent fin 120. In this embodiment, not only the air flow passing through the heat conducting gaps can flow through the heat dissipating tubes 110, but also the air flow passing through the heat conducting holes along the first direction X also flows through the heat conducting tubes, so that the heat dissipating effect of the heat sink 100 is better.

Referring to fig. 11, the second aspect of the present application also provides a light emitting device 10, which light emitting device 10 may be a photographic lamp. In particular, the light emitting device 10 may comprise the heat sink 100 of any of the embodiments described above. The light emitting apparatus 10 may further include an air blowing device 300 and a light emitting device 200. The air blowing device 300 is used for generating an air flow flowing toward each heat dissipation gap 130 along a third direction Z, which is perpendicular to the first direction X (in an embodiment, the third direction Z may also be perpendicular to the second direction Y at the same time). The light emitting device 200 is used for emitting light, the light emitting device 200 generates heat in the process of emitting light, and the light emitting device 200 is in contact with the heat sink 100, so that the heat generated by the light emitting device 200 can be dissipated by the heat sink 100, and the temperature of the light emitting device 200 is reduced.

The applicant finds that when the flow rate of the air flow generated by the air supply device 300 is smaller than the preset value, the air flow generated by the air supply device 300 is in a laminar state between the heat dissipation gaps 130, at this time, the air pressure inside the heat dissipation gaps 130 is smaller than the atmospheric pressure, and the outside air enters the heat dissipation gaps 130 along the first direction X through the air guide holes 121 and is finally led out of the heat sink 100 along the air flow direction of the air supply device 300. When the flow rate of the air flow generated by the air supply device 300 is higher than the preset value, the air flow generated by the air supply device 300 is in a turbulent flow state between the heat dissipation gaps 130, and at this time, the air pressure inside the heat dissipation gaps 130 is greater than the atmospheric pressure, so that a small part of the air flow inside the heat dissipation gaps 130 can be guided out of the heat sink 100 along the first direction X through the air guide holes 121. The applicant further finds that when a part of the airflow generated by the air supply device 300 is led out of the heat sink 100 along the first direction X, the heat dissipation effect of the heat sink 100 is better, so in an embodiment, in the light emitting apparatus 10, the flow rate of the airflow generated by the air supply device 300 may be configured to be higher than a preset value, so that a part of the airflow generated by the air supply device 300 can be led out of the heat sink 100 along the first direction X through each air guiding hole 121. The preset value is determined by the specific parameters of the heat sink 100 and the blower 300.

It should be noted that the description of the present application and the accompanying drawings set forth preferred embodiments of the present application, however, the present application may be embodied in many different forms and is not limited to the embodiments described in the present application, which are not intended as additional limitations to the present application, but are provided for the purpose of providing a more thorough understanding of the present disclosure. The above features are combined with each other to form various embodiments not listed above, and all of them are regarded as the scope described in the present specification; further, modifications and variations may occur to those skilled in the art in light of the foregoing description, and it is intended to cover all such modifications and variations as fall within the scope of the appended claims.

Claims (10)

1. A heat sink, comprising:

the heat dissipation fins are arranged along a first direction, a heat dissipation gap is defined between every two adjacent heat dissipation fins, air guide holes are formed in the heat dissipation fins, and the air guide holes penetrate through the corresponding heat dissipation fins along the first direction;

the radiating pipes penetrate through the radiating fins;

the air guide holes are configured to enable every two adjacent heat dissipation gaps to be communicated with each other.

2. The heat sink of claim 1,

and when viewed along the first direction, the air guide holes are at least partially overlapped, so that the air guide holes jointly define an air guide channel which is communicated with the heat dissipation gaps along the first direction.

3. The heat sink of claim 2,

and viewed along the first direction, the air guide holes are completely overlapped.

4. The heat sink of claim 1,

the radiator comprises a plurality of radiating pipes, and each air guide hole is at least positioned between two radiating pipes.

5. The heat sink of claim 4,

each air guide hole is in a long strip shape, and the quantity of the radiating pipes on two sides of each air guide hole is the same.

6. The heat sink of claim 1,

each radiating fin comprises a plurality of air guide holes, a plurality of air guide channels are defined by the air guide holes, and each air guide channel is communicated with each radiating gap along the first direction.

7. The heat sink of claim 1,

each radiating fin comprises three air guide holes, all the air guide holes are in a long strip shape, all the air guide holes are arranged in an extending mode along a second direction, and the second direction is perpendicular to the first direction;

all the air guide holes jointly define three air guide channels which are communicated with the heat dissipation gaps along the first direction.

8. The heat sink of claim 1,

each radiating fin comprises a first radiating fin and a second radiating fin, the first radiating fin and the second radiating fin are arranged adjacently, a first radiating gap is defined between the first radiating fin and the second radiating fin, a first air guide hole is formed in the first radiating fin, a second air guide hole is formed in the second radiating fin, and the radiating fins comprise first heat conduction sections located in the first radiating gap;

and viewed along the first direction, the first heat conduction section is arranged between the first air guide hole and the second air guide hole.

9. A light emitting apparatus, comprising:

the heat sink of any one of claims 1-8;

an air supply device for generating airflow flowing towards each heat dissipation gap along a third direction,

a light emitting device in contact with the heat sink.

10. The light-emitting device according to claim 9,

the air supply device is configured to enable air flow guided to each heat dissipation gap to pass through each air guide hole and to be guided out of the radiator along the third direction.

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