CN218001370U

CN218001370U - Radiator, lighting device and motor vehicle

Info

Publication number: CN218001370U
Application number: CN202220362034.5U
Authority: CN
Inventors: 陈永健
Original assignee: Foshan Ichikoh Valeo Auto Lighting Systems Co Ltd
Current assignee: Foshan Ichikoh Valeo Auto Lighting Systems Co Ltd
Priority date: 2022-02-22
Filing date: 2022-02-22
Publication date: 2022-12-09
Anticipated expiration: 2032-02-22

Abstract

The utility model discloses a radiator (100), include: the method comprises the following steps: a substrate (101); and a plurality of fins (102), wherein the plurality of fins (102) are arranged on the substrate (101) in a matrix form. According to the utility model discloses a radiator can effectively improve the radiating effect, and can reduce the material demand of making the radiator, reduce cost. The utility model discloses still disclose a lighting device and motor vehicles.

Description

Radiator, lighting device and motor vehicle

Technical Field

The present invention relates to the field of motor vehicle lighting and/or signalling, and more particularly to a heat sink, a lighting and/or signalling device and a motor vehicle.

Background

Thermal management is critical in the design of lighting devices. Light sources used in lighting devices may heat up during use, which may adversely affect the efficiency and lifetime of the light source. Heat sinks are often integrated into lighting devices to facilitate heat dissipation from the light sources. The heat sink may conduct or transfer heat from the light source via the heat sink to air circulating around the light source and the heat sink, thereby carrying heat away from the lighting device by convection. In some cases, it is difficult to achieve a desired heat dissipation effect with the existing heat sink.

SUMMERY OF THE UTILITY MODEL

Therefore, it is an object of the present invention to provide a heat sink, which at least partially solves the above mentioned problems.

The utility model provides a radiator, include: a substrate; and a plurality of fins regularly arranged on the base plate.

According to a non-limiting embodiment of the present invention, the fins are cylindrical fins.

According to the utility model discloses a non-limiting embodiment, be provided with the louvre on the base plate.

According to the utility model discloses a non-limiting embodiment, the louvre is arranged in the clearance of two adjacent rows of fins.

According to a non-limiting embodiment of the present invention, the diameter of the heat dissipation hole is equivalent to the diameter of the fin.

According to a non-limiting embodiment of the present invention, the plurality of fins have the same height.

According to a non-limiting embodiment of the present invention, the height of the fins of the plurality of fins near the edge of the base plate is greater than the height of the fins in the central region of the base plate.

According to a non-limiting embodiment of the present invention, the heat sink is made of a heat dissipating material.

The utility model also provides a lighting device, motor vehicle has as before the radiator.

The present invention also provides a motor vehicle having a radiator or a lighting device as described above.

According to the utility model discloses a radiator can effectively improve the radiating effect, and can reduce and make radiator material demand, and reduce cost can alleviate radiator and lighting device's weight simultaneously.

Drawings

The invention is further elucidated below with the aid of the accompanying drawing. Wherein,

fig. 1 schematically shows a schematic view of a heat sink according to an embodiment of the invention;

FIG. 2 schematically illustrates a bottom view of the heat sink of FIG. 1;

fig. 3 schematically shows a schematic view of a heat sink according to another embodiment of the invention;

FIG. 4 schematically shows thermal simulation results for the heat sink of FIG. 1;

FIG. 5 schematically shows the thermal simulation results of the heat sink of FIG. 3

Fig. 6 schematically shows the thermal simulation result of the conventional heat sink.

Detailed Description

Embodiments of the present invention are exemplarily described below. As those skilled in the art will appreciate, the illustrated embodiments may be modified in various different ways without departing from the inventive concept. Accordingly, the drawings and description are to be regarded as illustrative in nature, and not as restrictive. In the following, the same reference numbers generally indicate functionally identical or similar elements.

It is to be understood that the present invention may employ the terms first, second, third and the like to describe various information but such information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, the first information may also be referred to as second information, and similarly, the second information may also be referred to as first information, without departing from the scope of the present invention. The word "if," as used herein, may be interpreted as "at … …" or "at … …" or "in response to a determination," depending on the context.

In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

The utility model provides a radiator, the radiator configuration is dispelled the heat to illumination and/or signal indication device's heat source. The heat source may be a light source or other heat generating electronic component of an illuminating and/or signaling device. The light source may be a light emitting diode or the like and the electronic component may be a processor, a memory chip or the like.

Fig. 1 schematically shows a schematic view of a heat sink according to an embodiment of the invention; fig. 2 schematically shows a bottom view of the heat sink of fig. 1. As shown in fig. 1-2, the heat sink 100 includes: a base plate 101, a plurality of fins 102. Heat sink 100 is configured to dissipate heat from heat source 104. The number of the fins 102 can be selected according to actual needs, and the number of the fins 102 is not limited by the present invention.

The substrate 101 includes a front surface and a back surface opposite thereto, the plurality of fins 102 being disposed on the front surface of the substrate, and the heat source 104 being disposed on the back surface opposite the plurality of fins 102. The front and back surfaces herein are merely for showing that the fins 102 and the heat source 104 are disposed on the opposite surfaces of the substrate 101, and do not constitute a specific limitation.

The substrate 100 is preferably thermally conductive, so that heat generated during operation of the heat source 104 can be uniformly distributed to various positions of the heat sink 100, and further, the heat can be transferred to the outside through the plurality of fins 102.

The plurality of fins 102 may be arranged on the base plate 101 of the heat sink 100 in different ways. In one example, a plurality of fins 102 are regularly arranged on the base plate 101. Specifically, in the example shown in fig. 1-2, a plurality of fins 102 are arranged in a matrix on the substrate 101, that is, in uniform rows and columns, to achieve uniform heat dissipation. However, in other examples, the plurality of fins 102 may also be arranged on the base plate 101 of the heat sink 100 in other manners, such as in staggered columns and/or rows, radially, or randomly disposed on the base plate 101.

According to one embodiment of the present invention, the fins 102 are cylindrical fins, which may also be referred to as heat-dissipating studs. The cylindrical fins 102 shown in fig. 1-2 have a circular cross-sectional shape. However, in other examples, the cylindrical fins 102 may have other shapes, such as triangular, square, oval, and the like.

The fins 102 as shown in fig. 1-2 have the same diameter and cross-sectional area. However, in other examples, some fins 102 may have a larger or smaller cross-sectional area than other fins 102.

According to one embodiment of the present invention, as shown in fig. 1-2, the distance between the fins 102 is comparable to the diameter of the fins 102. When the fins 102 take other shapes, the distance between the fins 102 is comparable to the size of the fins 102. Such arrangement facilitates uniform arrangement of the fins 102, thereby improving the heat dissipation effect of the heat sink 100.

When the heat source 104 is disposed on the opposite side of the substrate 101 of the heat sink 100, the presence of the substrate 101 of the heat sink 100 blocks air from reaching the heat source 104, making it difficult for heat generated by the heat source 104 to dissipate and remain in the central portion of the heat sink, thereby adversely affecting the heat source 104 and even reducing the useful life of the heat source 104.

In an embodiment of the present invention, as shown in fig. 1-2, the heat dissipation holes 103 are disposed on the substrate 101. The heat dissipation holes 103 penetrate the substrate 101. The heat dissipation holes 103 formed in the substrate 101 can ensure that air can reach the vicinity of the center of the substrate 100 of the heat sink 100, so that the air can more easily reach the center of the heat sink 100, thereby improving the convection efficiency of cold and hot air, taking away heat generated by the heat source 104, and improving the heat dissipation effect. In addition, the heat dissipation holes 103 formed in the substrate 101 can reduce the material consumption for manufacturing the heat sink 100, and reduce the weight of the heat sink 100 and the lighting device.

In an embodiment of the present invention, as shown in fig. 1-2, the heat dissipation holes 103 are disposed in the gaps between two adjacent rows of fins 102. In order to improve the heat dissipation effect of the heat sink 100, the heat dissipation holes 103 are disposed in the gaps between two adjacent rows of fins 102 and spaced from the fins 102. By such an arrangement, the heat dissipation holes 103 are adjacent to the 4 fins 102 around the heat dissipation holes at the same time, and a better heat dissipation effect can be achieved. In other examples, the heat dissipation holes 103 may be arranged in other ways as needed, and the present invention is not limited thereto.

According to an embodiment of the present invention, the diameter of the heat dissipation hole 103 is equivalent to the diameter of the fin 102. Such arrangement facilitates uniform arrangement of the heat radiation holes 103 and the fins 102, thereby improving the heat radiation effect of the heat sink 100. However, in other examples, the size of the heat dissipation hole 103 may be larger or smaller than the diameter of the fin 102, and may be selected according to the actual requirement.

According to one embodiment of the present invention, as shown in fig. 1-2, the louvers 103 have a uniform diameter. However, in another example, the louvers 103 may have varying diameters, for example, louvers 103 near the edge of the substrate 101 have a smaller diameter, while louvers 103 near the center of the substrate 101 have a larger diameter, i.e., louvers 103 near the heat source 104 have a larger diameter. With such an arrangement, it may be advantageous to remove heat generated by heat source 104 through the circulation of air. Also for example, the thermal vias 103 near the edge of the substrate 101 have a larger diameter. With such an arrangement, a high air flow rate at the edge of the substrate 100 can be more effectively utilized.

According to one embodiment of the present invention, the height of the fins 102 is greater than their diameter. The taller fins 102 result in a larger heat transfer area, thereby providing the heat sink 100 with better heat dissipation.

According to an embodiment of the present invention, the plurality of fins 102 have the same height. The plurality of fins 102 having a uniform height may simplify the process of manufacturing the heat sink 100 while securing the heat dissipation effect.

Fig. 3 schematically shows a schematic view of a heat sink according to another embodiment of the present invention. As shown in fig. 3, the height of the fins 102 near the edges of the base plate 101 among the plurality of fins 102 is greater than the height of the fins 102 in the central region of the base plate 101. The taller fins 102 result in a larger heat transfer area, thereby providing the heat sink 100 with better heat dissipation. The higher air flow velocity at the edge of the substrate 100 relative to the center of the substrate 100, and the higher height of the fins 102 at the edge of the substrate 100 can more fully utilize the air flow velocity to achieve good heat dissipation.

In the case where the fins 102 at the edges of the base plate 100 have a higher height, even if the fins 102 at the central region of the base plate 101 have a lower height than in the conventional case, it is ensured that the heat dissipation effect of the heat sink 100 can be satisfied, and such an arrangement can further reduce the material requirement of the heat sink 100.

In the example shown in fig. 3, the height of the fins 102 in one row near the edge of the base plate 101 is greater than the height of the fins 102 in the central region of the base plate 101, and in another example, the height of the fins 102 in two rows near the edge of the base plate 101 may be greater than the height of the fins 102 in the central region of the base plate 101. The utility model discloses do not do specific restriction.

According to an embodiment of the present invention, the heat sink 100 is made of a heat dissipating material, such as aluminum or copper or other material suitable for heat conduction. In other examples, the base plate 100 and the fins 102 of the heat sink 100 may be made of any other suitable material, and the present invention is not limited thereto.

According to an embodiment of the present invention, the heat sink 100 may be manufactured by a process such as die casting. In other examples, the heat sink 100 may be manufactured by impact forging, extrusion, or other suitable processes, and the present invention is not limited thereto.

Fig. 4-6 show thermal simulation results for the corresponding heat sink 100 of fig. 1 and 3, respectively, and for a conventional heat sink. It is clear from a comparison of fig. 4-6 that the heat dissipation effect of the heat sink 100 according to the present invention is significantly improved compared to the conventional heat sink. The heat dissipation effect can be further improved by optimizing the size of the fins 102.

According to the utility model discloses a radiator 100 can strengthen the convection current of air through setting up louvre 103, effectively improves the radiating effect, and can reduce the material demand of making the radiator, and reduce cost can alleviate radiator and lighting device's weight simultaneously, in addition through the optimization to fin 102, can also further improve radiating effect.

The utility model also provides a lighting device. The lighting device comprises the heat sink 100 described above.

Additionally, the utility model discloses still provide a motor vehicle. The motor vehicle includes the radiator 100 described above or the lighting device described above.

The lighting device and the motor vehicle according to the present invention have at least the advantageous effects of the aforementioned heat sink 100.

The present invention is not limited to the above configuration, and various other modifications may be adopted. While the invention has been described with respect to a limited number of embodiments, those skilled in the art, having benefit of this disclosure, will appreciate that other embodiments can be devised which do not depart from the scope of the invention as disclosed herein. Accordingly, the scope of the present invention should be limited only by the attached claims.

Claims

1. A heat sink (100) comprising:

a substrate (101); and

a plurality of fins (102), the plurality of fins (102) being regularly arranged on the base plate (101);

wherein the fins (102) are cylindrical fins,

the base plate (101) is provided with heat dissipation holes (103), and the heat dissipation holes (103) are arranged in gaps between two adjacent rows of fins (102).

2. The heat sink (100) according to claim 1, wherein the diameter of the heat dissipation hole (103) is comparable to the diameter of the fin (102).

3. The heat sink (100) according to claim 1, wherein the plurality of fins (102) have the same height.

4. The heat sink (100) according to claim 1, wherein the fins of the plurality of fins (102) near the edge of the base plate (101) have a height greater than the fins in the central region of the base plate (101).

5. The heat sink (100) according to claim 1, wherein the heat sink (100) is made of a heat dissipating material.

6. A lighting device having a heat sink (100) according to any one of claims 1-5.

7. A motor vehicle having a heat sink (100) according to any one of claims 1 to 5 or a lighting device according to claim 6.