Heat-conducting plastic radiator

Abstract

The utility model discloses a heat-conducting plastic radiator which comprises a heat transfer part and a heat dissipation part made of heat-conducting plastic, the heat dissipation part comprises a contact surface, the heat transfer part is in close contact with the contact surface of the heat dissipation part, the heat conductivity coefficient of the material of the heat transfer part is larger than that of the material of the heat dissipation part, and a side wall is arranged on the contact surface. The edge of the heat transfer piece is attached to the side wall, the edge of the heat transfer piece and the side wall are arranged in a matched mode in the horizontal direction at an angle of 91-100 degrees, and the thickness of the upper end portion of the side wall is smaller than that of the lower end portion of the side wall. According to the scheme, the use stability problem of the heat-conducting plastic radiator in a cold and heat alternating environment is improved. The technical problems which exist for a long time and are difficult to overcome in the industry are solved, and the performance of the heat-conducting plastic radiator is not sacrificed. Technical support is provided for wide application of the heat-conducting plastic radiator in the field of high-heat-source heat dissipation. The structure is simple, the cost is low, and the cold and hot impact resistance is good.

Description

Technical Field

[0001] The present invention belongs to the technical field of heat dissipation, and particularly relates to a heat-conducting plastic radiator. Background Art

[0002] With the rapid development of various industries, the heat generation of heat sources (such as LED lights, processor PCBs) is increasing, putting higher requirements on the heat dissipation of radiators. The main research direction is to develop radiators with low cost, small size and good heat dissipation effect.

[0003] In the prior art, a structure combining heat-conducting plastic and aluminum sheets is often adopted. The heat of the heat source is quickly transferred to the heat-conducting plastic through the aluminum sheets, and then dissipated by the heat-conducting plastic. For the heat dissipation structure with aluminum sheets only attached near the heat source of the heat-conducting plastic radiator, it is difficult to quickly export the heat, and it is necessary to expand the area of the aluminum sheets to improve the heat conduction efficiency. However, when the area of the aluminum sheets is large, in the scenario of alternating hot and cold cycles, due to the different expansion and contraction properties of the aluminum sheet and heat-conducting plastic structures, the aluminum sheets are likely to fall off, resulting in product damage and unusability. The larger the area of the aluminum sheets, the greater the probability of falling off. The traditional fitting hole structure cannot completely solve the problem of falling off.

[0004] In the prior art, it is usually adopted to make the aluminum sheets into a bowl-shaped structure (or a flanging structure), and the edge of the bowl-shaped structure is embedded into the edge of the housing of the heat-conducting plastic radiator to clamp the "aluminum sheets" to prevent them from falling off. For example, the Chinese utility model patent with the publication number CN212565352U discloses a par lamp radiator and an LED par lamp, as shown in the attached Figure 5 description. It is the bowl-shaped aluminum sheet structure that is clamped by the blocking part of the heat-conducting plastic to prevent falling off (that is, there will be no problem of falling off). The angle between its heat transfer part and the "side wall" is an obtuse angle, and it can be seen from the figure that the obtuse angle is relatively large, about 125°. The purpose is to form a cup-shaped structure to transfer the heat to the heat-conducting plastic, and the angle is set without considering the cracking problem. And according to the structure in the figure, the thickness of the heat-conducting plastic on one side of the cup wall is not significantly different from the thickness from the bottom center to the edge, and there will be no technical problem of thermal shock cracking described in the present application.

[0005] For other structures combining heat-conducting plastic and aluminum sheets, and when the side wall thickness in the horizontal direction is significantly different from the thickness from the bottom center to the edge of the side wall, it is extremely easy to crack under the harsh thermal shock test conditions, and the qualified rate is low. This cracking problem has been a problem that has not been solved for many years for various heat dissipation products (such as floodlights, with a large heat dissipation area, a large heat generation of high-power LED heat sources, and a large area required for heat transfer parts), seriously restricting the popularization and use of heat-conducting plastic radiators.

[0006] In order to detect the use stability of the radiator during the hot and cold switching process, a thermal shock test is usually carried out on the radiator: for example, the radiator is exposed to extreme high and low temperature environments to test its adaptability to rapid temperature changes. The specific temperature settings of the thermal shock test may vary according to the characteristics of the product and the test requirements. Usually, the temperature ranges involved are such as -40~100°C or -50°C~150°C, etc. By setting parameters such as different thermal shock times and shock cycle numbers, the thermal shock performance of the radiator is reflected. Summary of the Invention

[0007] In order to improve the problem that the existing heat-conducting plastic radiator cannot meet the use stability in hot and cold alternating environments or high and low temperature environments, the purpose of the present invention is to provide a heat-conducting plastic radiator with simple structure, low cost and good thermal shock resistance and its application, which is specifically realized through the following technical solutions:

[0008] A heat-conducting plastic radiator includes a heat transfer member and a heat dissipation member made of heat-conducting plastic. The heat dissipation member includes a contact surface. The heat transfer member is in close contact with the contact surface of the heat dissipation member. The thermal conductivity coefficient of the material of the heat transfer member is greater than that of the material of the heat dissipation member. A side wall is provided on the contact surface. The edge of the heat transfer member is fitted with the side wall. The edge of the heat transfer member and the side wall are arranged at an angle of 91°~100° in the horizontal direction. The thickness of the upper end portion of the side wall is less than that of the lower end portion.

[0009] Optionally, the thickness of the upper end portion of the side wall is greater than or equal to 0.2 mm.

[0010] Optionally, the thickness of the heat transfer member is 0.1~5 mm.

[0011] Optionally, the heat transfer member is made of one or several materials of heat-conducting metal, heat-conducting carbon material, heat-conducting plastic, heat-conducting alloy.

[0012] Optionally, the heat transfer member is made of one or several materials of aluminum, copper, graphite, graphene, heat-conducting plastic.

[0013] Optionally, the heat transfer member is one or several of aluminum sheet, copper sheet, graphite sheet, graphene sheet, heat-conducting plastic sheet. The heat transfer members of the foregoing other materials are equivalent to this optional solution and are included within the scope of protection of this solution.

[0014] Optionally, a number of fitting holes for cooperating with the heat dissipation member are provided on the heat transfer member.

[0015] Optionally, the heat transfer member and the heat dissipation member are formed by insert injection molding process.

[0016] Optionally, a positioning mechanism is provided on the heat transfer member.

[0017] Optionally, the positioning mechanism is a positioning hole.

[0018] Optionally, the heat transfer member is made of a thermally conductive plastic material, and the heat transfer member and the heat dissipation member are formed by a two-color injection molding process.

[0019] Optionally, when the heat transfer member has a rectangular structure, the matching structure between the heat transfer member and the side wall is provided on both sides in the length direction of the rectangle; when the heat transfer member has a circular structure, the matching structure between the heat transfer member and the side wall is provided on a part or all of the arc segments of the circle.

[0020] The present application also provides an application of the thermally conductive plastic radiator according to any one of the above technical solutions, which is applied to the heat dissipation of chips or lamp beads on a PCB board.

[0021] Optionally, part or all of the heat transfer member is attached to the corresponding position of the chip or lamp bead on the PCB board.

[0022] Compared with the prior art, the present invention improves the use stability problem of the thermally conductive plastic radiator in a hot and cold alternating environment by arranging the edge of the heat transfer member and the side wall to be at an angle of 91° to 100° in the horizontal direction, and the thickness of the upper end part of the side wall is less than that of the lower end part. The meaning of this stability not only refers to that each part does not crack or other damage occurs, but also reduces the probability of cracking or other damage, and this probability can also be reduced to 0, and different effects are exerted according to different part structures, heat transfer member areas, etc. The structure of the present application is simple, the cost is low, and the heat and cold shock resistance performance is good.

[0023] Although the technical solution adopted in the present application is simple, it solves the long-existing and difficult-to-overcome technical problems in the industry without sacrificing the performance of the thermally conductive plastic radiator. It provides technical support for the wide application of the thermally conductive plastic radiator in the field of high heat source heat dissipation. So far, no other solution has been found that can be used as an alternative. The solution that sacrifices the area of the heat transfer member and the performance of the thermally conductive plastic radiator cannot be used to compare with the solution of the present application, which also highlights the good creativity of the present solution in maintaining the performance of the thermally conductive plastic radiator.

[0024] The cracking in the present application is different from the "cracking" problem in the insert injection molding process in the prior art. Their principles are different and the solutions are different. The "cracking" in insert injection molding is caused by stress concentration when the melt cools down to room temperature, and usually appears in sharp corner structures such as the edges of aluminum sheets being right angles or acute angles, and it can be solved by setting the edges of the aluminum sheets as obtuse angles or rounded corners. In the solution of the present application, such as in Embodiment 1, rounding the edges of the aluminum sheet cannot solve the problem, or after rounding the corners themselves, it still cracks after being in a cold or hot environment, which also shows that it is not the same technical problem, with different principles and inapplicable solutions.

[0025] The principle of the solution of this application to improve technical problems is inferred as follows: For parts with a large heat dissipation area requirement, the thickness h1 of the side wall at the joint between the aluminum sheet (for the sake of easy understanding, the heat transfer part is represented by the aluminum sheet to explain the solution principle) and the side wall in the horizontal direction (or X-axis direction), and the thickness h2 of the thermally conductive plastic at the joint surface between the aluminum sheet and the heat sink in the horizontal direction (or X-axis direction) (with the center point of the aluminum sheet in the X-axis direction as the reference benchmark). The difference between h2 and h1 is large, that is, h2 is much larger than h1 (which can be understood by referring to h1 and h2 in Figure 4 ). Due to the different amplitudes of material expansion and contraction (for example, the conventional shrinkage rate of thermally conductive nylon plastic is about 0.4%, and the expansion coefficient is much larger than that of aluminum), there is a large stress difference at the junction between the side wall and the contact surface, resulting in cracking.

[0026] For graphite sheets (or heat transfer parts with low strength or fragile such as graphene sheets), expansion and contraction may cause cracks or protrusions inside the graphite sheet. These cracks or protrusions do not necessarily exist at the junction between the side wall and the contact surface, and may appear inside the heat sink, which is a similar "protrusion" structure. This protrusion may be a crack during expansion. The figure shows a schematic diagram of the product after thermal shock testing.

[0027] In addition, if the heat transfer part avoids cracking by directly reducing the area, it is necessary to set a large number of fitting holes to prevent detachment. Then, a large number of fitting holes must be embedded, resulting in a reduction in the overall heat dissipation area of the entire heat transfer part, especially the heat dissipation area distributed at the heat source, leading to a reduction in the overall heat dissipation performance of the radiator. Due to the design of the solution of this application, the side wall thickness can be very small without cracking, so that the area of the heat transfer part can be set larger compared with the traditional aluminum sheet insert structure, and the heat dissipation effect is better. From another perspective, when the area of the heat transfer part is the same, more fitting hole structures can also be added to reduce the risk of the heat transfer part falling off due to thermal shock.

[0028] In this application, the edge of the heat transfer part is arranged at an angle of 91° - 100° with the side wall in the horizontal direction. The thickness of the upper end of the side wall is less than that of the lower end, which buffers the problem of large stress differences at the junction between the side wall and the contact surface. Specifically, when heated and expanded, h2 expands greatly and h1 expands slightly. The stress difference caused by expansion will shift the heat transfer part in the direction of the contact surface (this shift can be a very small trend or distance, which does not affect normal use), promoting the closer fitting of the heat transfer part and the contact surface, enhancing the firmness of the combination of the heat transfer part and the heat sink, and improving the heat dissipation effect. When cooled and contracted, h2 contracts greatly and h1 contracts slightly. The stress difference caused by contraction will move the heat transfer part in the opposite direction of the contact surface (this shift can be a very small trend or distance. When the offset is small, the heat transfer part will not fall off), achieving the effect of buffering stress or releasing stress, and avoiding the generation of cracking, cracks or protrusions (such as graphite sheets are prone to generate cracks or protrusions). Description of the Drawings

[0029] Figure 1 Is a perspective view of the heat-conducting plastic radiator described in Embodiment 1;

[0030] Figure 2 Is an exploded view of the heat-conducting plastic radiator described in Embodiment 1;

[0031] Figure 3 Is a front view of one side of the heat transfer member of the heat-conducting plastic radiator described in Embodiment 1;

[0032] Figure 4 Is Figure 3 The sectional view at the middle sectional line;

[0033] Figure 5 Is Figure 4 The enlarged view of the structure at A in;

[0034] In the figure, the reference numerals are: heat dissipation member 1, contact surface 101, side wall 102, upper end portion 1021, lower end portion 1022, heat dissipation fins 103, heat transfer member 2, fitting hole 201, positioning hole 202. Detailed Description of the Embodiment

[0035] The following elaborates the specific implementation manners of the present application in detail through embodiments. However, the specific implementation of the present application does not limit the technical solutions of the present application. Any non-substantive changes such as common technical solution replacements in the art using the technical solutions described in the embodiments of the present application are within the protection scope of the present application.

[0036] Unless otherwise specified, "fitting" in the present application means being closely combined, and does not narrowly refer to being pasted with an adhesive.

[0037] Unless otherwise specified, "upper", "lower", "top", "bottom", etc. in the present application are relative positions. The positions of the embodiments can be referred to, and those skilled in the art can adjust the relative positions according to the idea of the present application. Embodiment 1

[0038] As Figures 1 - 5 Described, a heat-conducting plastic radiator includes a heat transfer member 2 and a heat dissipation member 1 made of heat-conducting plastic. The heat dissipation member 1 includes a contact surface 101. The heat transfer member 2 is in close contact with the contact surface 101 of the heat dissipation member 1. The heat conduction coefficient of the material of the heat transfer member 2 is greater than that of the material of the heat dissipation member 1. The contact surface 101 is provided with a side wall 102. The edge of the heat transfer member 2 is fitted with the side wall 102. The edge of the heat transfer member 2 and the side wall 102 are arranged at an angle of 91° to 100° in the horizontal direction. The thickness of the upper end portion 1021 of the side wall 102 is less than that of the upper end portion 1022.

[0039] Among them, the contact surface 101 between the heat transfer member 2 and the heat dissipation member 1 is in close contact. This close contact can be formed through processes such as insert molding (or overmolding) and two-shot molding (or two-component molding).

[0040] Among them, the side wall 102 is a structure that restricts (such as wraps or blocks) the heat transfer member 2. In this embodiment, the side wall 102 is perpendicular to the contact surface 101. In other solutions, the side wall 102 can also have a certain angle. For example, the side wall 102 can be a combined design of the edge structure of the housing (heat dissipation member 1), and it is not necessarily a separate side wall 102 structure. It can also be understood as: the side wall 102 corresponding to the thickness of the heat transfer member 2 (which can be regarded as a part of the housing structure as the side wall 102).

[0041] Among them, the heat dissipation member 1 can also be called the body of the thermally conductive plastic radiator. It can be combined with other housings in design, or it can be used in cooperation with other mating parts by setting installation structures. Specifically, in Embodiment 1 of the present application, the contact surface 101 and the side jointly form the bottom shell of the floodlight. The bottom shell is internally provided with a space for accommodating other structures, and the back is provided with structures such as heat dissipation fins 103 or "ribs".

[0042] Among them, the edge of the heat transfer member 2 and the side wall 102 are arranged at an angle of 91° - 100° in the horizontal direction. The thickness of the upper end portion 1021 of the side wall 102 is less than that of the upper end portion 1022. As a whole feature, it defines the specific angular direction between the heat transfer member 2 and the side wall 102. For example Figure 4 Both the left end and the right end of the cross-section shown meet the limitations of the feature. It can also be described as: the bottom angle of the edge of the heat transfer member 2 is 91° - 100°, which has the same meaning. Here, the bottom is Figure 4 the bottom position in, relative to the top on the side fitting the heat source. In this embodiment, the angle α is set to 95°.

[0043] Among them, for the angle setting of 91° - 100°, those skilled in the art, under the idea of this application, avoid its range. For example, angles such as 90.5°, 101°, 103°, etc. are regarded as equivalent technical features within the scope of this application. It may sacrifice some effects. For example, when the angle is slightly larger, it may be relatively easier to fall off in hot and cold environments for the heat transfer member 2. This easier fall-off only means relatively easier to fall off. The avoidance design can increase the fitting hole 201 scheme to reduce the fall-off, or ignore the problem of easy fall-off, which is used in the thermally conductive plastic radiator with a relatively small heat transfer surface area, and is less affected by expansion, contraction, etc., and has a relatively low probability of falling off. All these are not out of the main idea of this application scheme and are within the protection scope of this application. If the angle is set too large, the heat transfer member 2 is likely to fall off during contraction.

[0044] Among them, the thermal conductivity coefficient of the material of the heat transfer member 2 is greater than that of the material of the heat dissipation member 1. This is a setting that makes full use of the large thermal conductivity coefficient of the heat transfer member 2 to quickly transfer heat to the heat dissipation member 1, which can reduce the overall cost of the radiator made of high-thermal-conductivity materials. For example, the heat transfer member 2 made of high-thermal-conductivity nylon material and the heat dissipation member 1 made of low-thermal-conductivity nylon material can be used in combination, as long as the heat dissipation effect meets the actual use requirements.

[0045] In this embodiment, the thickness of the upper end portion 1021 is 0.5 mm. The thickness of the upper end portion 1022 is set in cooperation with the 95° angle structure at the bottom of the heat transfer member 2. In other embodiments, the thickness of the upper end portion 1021 can be greater than or equal to 0.2 mm. If it is too small, it may not be able to limit the heat transfer member 2, or insert molding may be difficult.

[0046] In this embodiment, the thickness of the heat transfer member 2 is 3.5 mm. In other embodiments, the thickness of the heat transfer member 2 can be 0.1 - 5 mm. If the thickness of the heat transfer member 2 is set too small, it may undergo a slightly larger deformation due to the material itself, such as bending deformation. Although it can buffer the stress concentration caused by temperature shock and reduce the cracking probability, it may be more likely to fall off. If it is too thick, the cost may be too high. The smaller the thickness of the heat transfer member 2, within the designed angle range in the horizontal direction between the edge of the heat transfer member 2 and the side wall 102, a large angle of 100 degrees is preferably selected. The smaller the thickness of the heat transfer member 2, the tighter the fixation of the structure with the fitting hole 201, and the angle at this place can be set relatively large without making the heat transfer member 2 more likely to separate from the heat dissipation member 1.

[0047] In this embodiment, the heat transfer member 2 is an aluminum sheet, and the heat dissipation member 1 is made of a thermally conductive plastic with a thermal conductivity of 10 W / (m·K). Heat transfer members 2 made of other materials are equivalent to this optional solution and are included within the scope of protection of this solution. For example, in other embodiments, it can also be one or several materials among thermally conductive metals, thermally conductive carbon materials, thermally conductive plastics, and thermally conductive alloys. Specifically: it can be one or several materials among aluminum, copper, graphite, graphene, and thermally conductive plastics. Structurally, it can also be one or several of aluminum sheets, copper sheets, graphite sheets, and graphene sheets. In other embodiments, the heat transfer member 2 can also be made of a thermally conductive plastic with a thermal conductivity of 5 W / (m•K), and the heat dissipation member 1 is made of a thermally conductive plastic with a thermal conductivity of 10 W / (m•K).

[0048] In this embodiment, a number of fitting holes 201 for cooperating with the heat dissipation member 1 are provided on the heat transfer member 2. The fitting holes 201 help the heat transfer member 2 and the heat dissipation member 1 to be more tightly combined during insert molding, thereby hindering the separation of the heat transfer member 2 and the heat dissipation member 1 to a certain extent.

[0049] In this embodiment, the heat transfer member 2 and the heat dissipation member 1 are formed by insert injection molding. In other embodiments, when the heat transfer member 2 is made of thermally conductive plastic, the heat transfer member 2 and the heat dissipation member 1 are formed by two-color injection molding.

[0050] In this embodiment, a positioning mechanism is provided on the heat transfer member 2. The positioning mechanism is a positioning hole 202. In other embodiments, those skilled in the art can also adopt other positioning structures to facilitate the positioning of the heat transfer member 2 for insert injection molding.

[0051] In this embodiment, the heat transfer member 2 is generally rectangular, and the side wall 102 is arranged around the heat transfer member 2. In other embodiments, when the heat transfer member 2 has a rectangular structure (here it means generally rectangular, such as square or other shapes with arc-shaped or other irregular edges, as long as there are generally "length" and "width"), the matching structure between the heat transfer member 2 and the side wall 102 is arranged on both sides in the length direction of the rectangle. Since the probability of cracking in the length direction is relatively high, it can be preferentially arranged in the length direction to reduce the cracking probability and improve the stability of the product in cold and / or hot environments. It can also be arranged according to requirements, with some or all of the structures of the present application arranged in the length and width directions to better reduce the cracking probability. When the heat transfer member 2 has a circular structure (here it means generally circular, including regular circular, elliptical, arc-shaped, or a combination of arc-shaped and other shapes), such as a circular high bay light, the matching structure between the heat transfer member 2 and the side wall 102 is arranged on some or all of the arc segments of the circle. It can be arranged in part or in whole according to the area size of the heat transfer member 2, as long as the requirement of reducing the cracking probability is met. Arranging it in whole has a better effect.

[0052] In this embodiment, heat dissipation fins 103 are provided on the heat dissipation member 1. On the one hand, it improves the heat dissipation effect of the radiator, and on the other hand, it enhances the strength of the position where the contact surface 101 of the heat dissipation member 1 is located to a certain extent, preventing the separation of the heat transfer member 2 and the heat dissipation member 1 due to non-thermal or non-cooling situations such as dropping or squeezing.

[0053] The solution of the present application has a very simple structure and improves or solves the problem of cracking of the large-area heat transfer member 2 structure in the cold and / or hot environment when a high-power thermally conductive plastic radiator has long needed to improve the heat dissipation effect for many years. It provides technical support for the wide application of thermally conductive plastic radiators in the field of high-heat source heat dissipation. Embodiment 2

[0054] Application of a heat-conducting plastic radiator, which is applied to a floodlight. A floodlight includes the heat-conducting plastic radiator described in Embodiment 1. The heat-conducting plastic radiator dissipates heat from the lamp beads on the PCB board. The PCB board is attached to the heat transfer member 2, and the heat is dispersed and transferred to the heat dissipation member 1 (the floodlight housing in this embodiment) through the heat transfer member 2, and is quickly dissipated by the heat dissipation member 1 to cool the floodlight. This embodiment includes the structure of the heat transfer member 2 and the side wall 102 shown in Embodiment 1. Among them, part or all of the heat transfer member 2 is attached to the corresponding position of the lamp beads on the PCB board. It can also be understood that the projection of the lamp beads on the heat transfer member 2 can occupy part or all of the surface where the projection is located on the heat transfer member 2.

[0055] In other embodiments, it can also be used as a chip radiator on the PCB board. The idea is the same and will not be elaborated. Embodiment 3

[0056] A heat-conducting plastic radiator is basically the same as that in Embodiment 1, except that the heat transfer member 2 is a graphite sheet. The edge of the heat transfer member 2 forms an angle of 100° with the side wall 102 in the horizontal direction, and the thickness of the graphite sheet is 0.2 mm. The minimum thickness of the upper end portion 1021 of the side wall 102 is equal to 0.2 mm. The thermal shock test is selected for cyclic testing under the conditions of -50°C to 150°C. Embodiment 4

[0057] A heat dissipation structure applied to the chips or lamp beads on the PCB board (such as the housing radiator of a high-bay light, a headlight radiator, a camera chip radiator, a router chip radiator, etc.). Part or all of the heat transfer member 2 is attached to the corresponding position of the chips or lamp beads on the PCB board. The solution of this application refers to the structural idea of Embodiment 1. The difference from Embodiment 1 is that there are slight differences in the shape, area, etc. of the heat transfer member 2 and the side wall 102, but they can all be understood by those skilled in the art according to the idea of Embodiment 1 and will not be elaborated.

[0058] It should be noted that for the components used in the above embodiments, those skilled in the art can select or replace them according to their needs, which does not exceed the protection scope of this application.

Claims

1. A heat-conducting plastic radiator, comprising a heat-transfer member and a heat-dissipating member made of heat-conducting plastic. The heat-dissipating member includes a contact surface, and the heat-transfer member is in close contact with the contact surface of the heat-dissipating member. The heat conductivity coefficient of the material of the heat-transfer member is greater than that of the material of the heat-dissipating member, and it is characterized in that: A side wall is provided on the contact surface, the edge of the heat transfer member is in contact with the side wall, and the edge of the heat transfer member and the side wall are arranged at an angle of 91°-100° in the horizontal direction, and the thickness of the upper end of the side wall is less than that of the lower end.

2. The heat-conducting plastic radiator according to claim 1, wherein: The thickness of the upper end of the side wall is greater than or equal to 0.2 mm.

3. The heat-conducting plastic radiator according to claim 1, wherein: The thickness of the heat transfer member is 0.1-5 mm.

4. The heat-conducting plastic radiator according to claim 1, wherein: The heat transfer member is one or more of an aluminum sheet, a copper sheet, a graphite sheet, a graphene sheet, and a thermally conductive plastic sheet.

5. The heat-conducting plastic radiator according to claim 1, wherein: A number of fitting holes for cooperating with the heat dissipation member are provided on the heat transfer member.

6. The heat-conducting plastic radiator according to any one of claims 1 to 5, characterized in that: The heat transfer member and the heat dissipation member are formed by an insert injection molding process.

7. The heat-conducting plastic radiator according to claim 6, wherein: A positioning mechanism is provided on the heat transfer member.

8. The heat-conducting plastic radiator according to claim 1, wherein: The heat transfer member is made of a thermally conductive plastic material, and the heat transfer member and the heat dissipation member are formed by a two-color injection molding process.

9. The heat-conducting plastic radiator according to claim 1, wherein: When the heat transfer member is of a rectangular structure, the matching structure between the heat transfer member and the side wall is provided on both sides in the length direction of the rectangle; When the heat transfer member is of a circular structure, the matching structure between the heat transfer member and the side wall is provided on part or all of the arc segments of the circle.

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