Composite heat dissipation plastic protective shell

Abstract

The utility model relates to the technical field of plastic shells, and discloses a composite heat dissipation plastic protective shell which comprises a protective shell body, an active heat dissipation assembly is installed at the top of the protective shell body, a first strip-shaped groove is formed in the top of the inner wall of the protective shell body, and second strip-shaped grooves are formed in the two sides of the inner wall of the protective shell body. Bottom heat dissipation holes are formed in the middle of the bottom of the protection shell body, top heat dissipation holes are formed in the middle of the top of the protection shell body, and a heat dissipation aluminum plate is installed on the top of the inner wall of the protection shell body. According to the protective shell, heat is more easily and directly dissipated into external air through the protective shell main body, low-temperature air at the bottom enters the protective shell main body through the second strip-shaped grooves and the bottom heat dissipation holes, high-temperature air in the protective shell main body is discharged through the top heat dissipation holes, and therefore the protective shell main body has a good heat dissipation effect.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic shells, and more specifically to a composite heat dissipation plastic protective shell. Background Art

[0002] With the increasing popularity of electronic products, electronic products have relatively high requirements for power in use. With the rapid development of third-generation semiconductor technology, new power devices are emerging in an endless stream, and power devices based on gallium nitride and silicon carbide technology (such as power adapters, consumer fast charging adapters, inverters, etc.) tend to be miniaturized.

[0003] Most of the existing power adapters are closed structures. Even if the power device is very efficient, the lost heat cannot be dissipated, resulting in a high temperature of the adapter casing. However, general power supplies are not protected by a casing, which is prone to danger and is not conducive to the protection of the power supply. However, when using an ordinary power supply casing, it is easy to cause severe heat due to the airtightness, which may damage the power supply and is not conducive to long-term use. Utility Model Content

[0004] In order to overcome the above defects of the prior art, the utility model provides a composite heat dissipation plastic protective shell to solve the problems existing in the above background technology.

[0005] The utility model provides the following technical solutions: a composite heat dissipation plastic protective shell, comprising a protective shell body, an active heat dissipation component is installed on the top of the protective shell body, a first strip groove is opened on the top of the inner wall of the protective shell body, second strip grooves are opened on both sides of the inner wall of the protective shell body, a bottom heat dissipation hole is opened in the middle of the bottom of the protective shell body, a top heat dissipation hole is opened in the middle of the top of the protective shell body, a heat dissipation aluminum plate is installed on the top of the inner wall of the protective shell body, and the heat dissipation aluminum plate is fixedly connected to the protective shell body by thermal conductive silicone grease.

[0006] Furthermore, the first strip-shaped groove is connected to the second strip-shaped groove, and the second strip-shaped groove runs through the bottom of the protective shell body.

[0007] Furthermore, the four corners of the bottom of the protective shell body are fixedly connected with support blocks, and the support blocks are made of rubber.

[0008] Furthermore, a cylindrical cavity is opened inside the heat dissipation aluminum plate, and cooling water is arranged inside the cylindrical cavity.

[0009] Furthermore, heat-conducting particles and toughening agents are added to the material of the protective shell body.

[0010] Furthermore, the active heat dissipation component includes a fixed frame fixedly connected to the top of the protective shell body, a fixed bracket is fixedly connected to the inner side of the fixed frame, a micro motor is fixedly connected to the inner side of the fixed bracket, a fan blade is fixedly connected to the output shaft of the micro motor, and a protective net is fixedly connected to the top of the inner side of the fixed frame.

[0011] Technical effects and advantages of the utility model:

[0012] 1. The utility model is provided with a protective shell body and a heat dissipation aluminum plate. The heat-conducting particles improve the thermal conductivity of the protective shell body, so that heat can be more easily dissipated directly to the external air through the protective shell body. The circuit board inside the protective shell body will generate more heat during operation. The heat dissipation aluminum plate has good thermal conductivity. The cooling water inside the cylindrical cavity has a large specific heat capacity and can absorb the heat inside the protective shell body. Under the supporting action of the supporting block, the bottom of the protective shell body and the supporting surface have a certain interval. The density of the hot air near the heat dissipation aluminum plate is low, forming a low air pressure. The temperature at the bottom of the protective shell body is low, and the air pressure is high relative to the top of the inner side of the protective shell body, thereby forming air convection. The low-temperature air at the bottom enters the interior of the protective shell body through the second strip groove and the bottom heat dissipation holes, and the high-temperature air inside the protective shell body is discharged through the top heat dissipation holes, and the temperature of the heat dissipation aluminum plate is reduced, so that the protective shell body has a better heat dissipation effect.

[0013] 2. The utility model is provided with an active heat dissipation component, and a temperature control switch is arranged inside the protective shell body. When the temperature inside the protective shell body cannot be dissipated in time by natural heat dissipation, and the internal temperature exceeds the threshold of the temperature control switch, the micro motor is started to drive the fan blades to rotate, which can increase air convection and enable the high-temperature air inside the protective shell body to be quickly discharged through the top heat dissipation holes. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0015] Figure 2 It is a schematic diagram of the bottom heat dissipation hole structure of the utility model.

[0016] Figure 3 This is a schematic diagram of the first strip groove structure of the utility model.

[0017] Figure 4 This is a schematic diagram of the heat dissipation aluminum plate structure of the utility model.

[0018] Figure 5 This is a schematic diagram of the structure of the active heat dissipation component of the utility model.

[0019] The accompanying drawings are marked as follows: 1. Protective shell body; 101. Support block; 102. Second strip groove; 103. Bottom heat dissipation hole; 104. Top heat dissipation hole; 105. First strip groove; 106. Heat dissipation aluminum plate; 161. Cylindrical cavity; 2. Active heat dissipation component; 201. Fixed frame; 202. Fixed frame; 203. Micro motor; 204. Fan blades; 205. Protective net. DETAILED DESCRIPTION

[0020] The technical solution of the present invention will be clearly and completely described below in conjunction with the drawings in the present invention. In addition, the forms of the various structures recorded in the following embodiments are merely illustrative. The composite heat dissipation plastic protective shell involved in the present invention is not limited to the various structures recorded in the following embodiments. All other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the present invention.

[0021] Reference Figure 1-Figure 5 The utility model provides a composite heat dissipation plastic protective shell, including a protective shell body 1, an active heat dissipation component 2 is installed on the top of the protective shell body 1, a first strip groove 105 is opened on the top of the inner wall of the protective shell body 1, and second strip grooves 102 are opened on both sides of the inner wall of the protective shell body 1. A bottom heat dissipation hole 103 is opened in the middle of the bottom of the protective shell body 1, and a top heat dissipation hole 104 is opened in the middle of the top of the protective shell body 1. A heat dissipation aluminum plate 106 is installed on the top of the inner wall of the protective shell body 1, and the heat dissipation aluminum plate 106 is fixedly connected to the protective shell body 1 through thermal conductive silicone grease.

[0022] In the embodiment of the present application, the heat-conducting particles can be one or more of aluminum powder, copper powder, aluminum oxide, silicon oxide, carbon nanotubes or graphite particles, which improve the thermal conductivity of the protective shell body 1, so that the heat can be more easily dissipated directly through the protective shell body 1 to the external air. The circuit board inside the protective shell body 1 will generate more heat during operation. The heat dissipation aluminum plate 106 has good thermal conductivity. The cooling water inside the cylindrical cavity 161 has a large specific heat capacity and can absorb the heat inside the protective shell body 1. Under the support of the support block 101, the bottom of the protective shell body 1 and the support surface are spaced a certain distance apart. The density of the hot air near the heat dissipation aluminum plate 106 is low, forming a low air pressure. The temperature at the bottom of the protective shell body 1 is low, and the air pressure is high relative to the top of the inner side of the protective shell body 1, thereby forming air convection. The low-temperature air at the bottom enters the interior of the protective shell body 1 through the second strip groove 102 and the bottom heat dissipation hole 103, and the high-temperature air inside the protective shell body 1 is discharged through the top heat dissipation hole 104, and the temperature of the heat dissipation aluminum plate 106 is reduced, so that the protective shell body 1 has a good heat dissipation effect;

[0023] A temperature control switch is provided inside the protective shell body 1. When the temperature inside the protective shell body 1 cannot be dissipated in time through natural heat dissipation and the internal temperature exceeds the threshold of the temperature control switch, the micro motor 203 is started to drive the fan blades 204 to rotate, which can increase air convection and enable the high-temperature air inside the protective shell body 1 to be quickly discharged through the top heat dissipation holes 104.

[0024] In a preferred embodiment, the first strip groove 105 is connected to the second strip groove 102 , and the second strip groove 102 runs through the bottom of the protective shell body 1 , so that external air can enter the interior of the protective shell body 1 through the second strip groove 102 .

[0025] In a preferred embodiment, the four corners of the bottom of the protective shell body 1 are fixedly connected with support blocks 101, and the support blocks 101 are made of rubber. The support blocks 101 support the protective shell body 1, so that the low-temperature air from the outside can enter the interior of the protective shell body 1 through the second strip groove 102 and the bottom heat dissipation holes 103.

[0026] In a preferred embodiment, a cylindrical cavity 161 is provided inside the heat dissipation aluminum plate 106, and cooling water is provided inside the cylindrical cavity 161. The specific heat capacity of water is much higher than that of the heat dissipation aluminum plate 106, so the cylindrical cavity 161 is provided inside the heat dissipation aluminum plate 106 to increase the overall heat capacity. When the heat dissipation aluminum plate 106 absorbs heat, the water in the cylindrical cavity 161 will absorb part of the heat and store it, slowing down the speed at which the heat dissipation aluminum plate 106 heats up, thereby increasing the heat transfer time and improving the overall heat transfer efficiency.

[0027] In a preferred embodiment, thermal conductive particles and toughening agents are added to the material of the protective shell body 1. The toughening agent can increase the impact resistance and tensile properties of the protective shell body 1, protect the charging circuit board inside the protective shell body 1, and make the protective shell body 1 not easily broken when it is subjected to a drop impact.

[0028] In a preferred embodiment, the active heat dissipation component 2 includes a fixed frame 201 fixedly connected to the top of the protective shell body 1, a fixed frame 202 is fixedly connected to the inner side of the fixed frame 201, a micro motor 203 is fixedly connected to the inner side of the fixed frame 202, the output shaft of the micro motor 203 is fixedly connected to the fan blades 204, and a protective net 205 is fixedly connected to the top of the inner side of the fixed frame 201. The active heat dissipation component 2 can increase air convection and accelerate the heat dissipation inside the protective shell body 1.

[0029] Working principle of the utility model: the heat-conducting particles can be one or more of aluminum powder, copper powder, aluminum oxide, silicon oxide, carbon nanotubes or graphite particles, which improve the thermal conductivity of the protective shell body 1, so that the heat can be more easily dissipated directly through the protective shell body 1 to the external air. The circuit board inside the protective shell body 1 will generate more heat during operation. The heat dissipation aluminum plate 106 has good thermal conductivity. The cooling water inside the cylindrical cavity 161 has a large specific heat capacity and can absorb the heat inside the protective shell body 1. Under the support of the support block 101, the bottom of the protective shell body 1 and the support surface have a certain interval. The density of the hot air near the heat dissipation aluminum plate 106 is low, forming a low air pressure. The temperature at the bottom of the protective shell body 1 is low, and the air pressure is high relative to the top of the inner side of the protective shell body 1, thereby forming air convection. The low-temperature air at the bottom enters the interior of the protective shell body 1 through the second strip groove 102 and the bottom heat dissipation hole 103, and the high-temperature air inside the protective shell body 1 is discharged through the top heat dissipation hole 104, and the temperature of the heat dissipation aluminum plate 106 is reduced, so that the protective shell body 1 has a good heat dissipation effect;

[0030] A temperature control switch is provided inside the protective shell body 1. When the temperature inside the protective shell body 1 cannot be dissipated in time through natural heat dissipation and the internal temperature exceeds the threshold of the temperature control switch, the micro motor 203 is started to drive the fan blades 204 to rotate, which can increase air convection and enable the high-temperature air inside the protective shell body 1 to be quickly discharged through the top heat dissipation holes 104.

[0031] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, which may refer to mechanical connection or electrical connection, or internal communication between two components, or direct connection. "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may change;

[0032] Secondly: In the drawings of the embodiments disclosed in the present utility model, only the structures related to the embodiments disclosed in the present utility model are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present utility model can be combined with each other;

[0033] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A composite heat dissipation plastic protective housing, comprising a protective housing body (1), characterized in that: An active heat dissipation component (2) is installed on the top of the protective shell body (1); a first strip groove (105) is opened on the top of the inner wall of the protective shell body (1); second strip grooves (102) are opened on both sides of the inner wall of the protective shell body (1); a bottom heat dissipation hole (103) is opened in the middle of the bottom of the protective shell body (1); a top heat dissipation hole (104) is opened in the middle of the top of the protective shell body (1); a heat dissipation aluminum plate (106) is installed on the top of the inner wall of the protective shell body (1); and the heat dissipation aluminum plate (106) is fixedly connected to the protective shell body (1) through thermal conductive silicone grease.

2. The composite heat dissipation plastic protective housing according to claim 1, characterized in that: The first strip-shaped groove (105) is connected to the second strip-shaped groove (102), and the second strip-shaped groove (102) passes through the bottom of the protective shell body (1).

3. The composite heat dissipation plastic protective housing according to claim 1, characterized in that: The four corners of the bottom of the protective shell body (1) are fixedly connected to support blocks (101), and the support blocks (101) are made of rubber material.

4. The composite heat dissipation plastic protective housing according to claim 1, characterized in that: A cylindrical cavity (161) is provided on the inner side of the heat dissipation aluminum plate (106), and cooling water is provided on the inner side of the cylindrical cavity (161).

5. The composite heat dissipation plastic protective housing according to claim 1, characterized in that: Heat-conducting particles and toughening agents are added to the material of the protective shell body (1).

6. The composite heat dissipation plastic protective housing according to claim 1, characterized in that: The active heat dissipation component (2) comprises a fixed frame (201) fixedly connected to the top of the protective shell body (1); a fixed frame (202) is fixedly connected to the inner side of the fixed frame (201); a micro motor (203) is fixedly connected to the inner side of the fixed frame (202); a fan blade (204) is fixedly connected to the output shaft of the micro motor (203); and a protective net (205) is fixedly connected to the top of the inner side of the fixed frame (201).

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