KR100831738B1 - A cooling structure for portable terminal - Google Patents

Abstract

The present invention relates to a heat dissipation structure of a portable terminal. In the present invention, the main substrate 18 is installed inside the main body case 12 forming the appearance of the portable terminal 10. The main substrate 18 is provided with a lot of heat during operation of the portable terminal 10. Various heat generating parts 20 for generating are mounted, and the main board 18 is provided with a heat conducting plate 22 for conducting heat generated from the heat generating parts 20. The heat conducting plate 22 is provided. One side thereof is in thermal contact with the upper surface of the heat generating part 20. Meanwhile, one end of the heat conduction plate 22 is integrally formed with heat dissipation fins 24 for heat exchange with air introduced into the body case 12. In addition, a heat dissipation fan 26 is formed at one side of the heat dissipation fin 24 to form an air flow for discharging heat inside the main body case 12. According to the present invention having such a configuration, the main body case The heat generated from the components installed inside the main body Since it is forcibly released to the outside of the switch, there is an advantage that the damage of the component by heat is prevented.

Handheld terminal, heat radiating fins, heat conduction plate

Description

Heat dissipation structure of portable terminal {A cooling structure for portable terminal}

1 is a schematic view showing a heat radiation structure of a portable terminal according to the prior art.

Figure 2 is a perspective view showing the internal configuration of a portable terminal employing a heat radiation structure of the portable terminal according to an embodiment of the present invention.

Figure 3 is a perspective view showing the appearance of the main body case constituting the embodiment of the present invention.

Figure 4a and 4b is a working state showing the process of mounting the heat conduction plate constituting the embodiment of the present invention on the main substrate.

Explanation of symbols on the main parts of the drawings

10: portable terminal 12: main body case

14 display unit 16 suction port

17: discharge port 18: main board

20: heat generating part 22: heat conduction plate

23: thermoelectric toolless 24: heat dissipation fin

26: heat dissipation fan

The present invention relates to a portable terminal, and more particularly, to a heat dissipation structure of a portable terminal that is mounted inside the portable terminal to dissipate heat generated during operation of the portable terminal to the outside.

1 is a configuration diagram schematically showing a heat radiation structure of a portable terminal according to the prior art.

According to this, the appearance of the portable terminal is formed by the case (1). The main board 3 is installed inside the case 1. Various components for the operation of the portable terminal are installed on the main board 3.

For example, a central processing unit for controlling the entire portable terminal, a graphics chip for graphic processing of the portable terminal, and a chipset for controlling electrical signals such as data are installed therein. The components of the above-described portable terminal increase the degree of integration in order to store a lot of information in the components themselves, so that a lot of heat is generated during operation. Hereinafter, the components will be collectively called a heat generating component 5.

A heat conductive sheet 7 is mounted between the heat generating part 5 and the case 1 provided on the top to disperse heat generated from the heat generating part 5. The thermal conductive sheet 7 may be formed of a silicon sheet, an acrylic sheet, a urethane sheet, a graphite sheet, a foam sheet, or the like.

In the prior art having such a configuration, when the user operates the portable terminal, heat is generated while various components including the heating component 5 are operated. Such heat is transferred to the case 1 by the heat conductive sheet 7 or dispersed in the case 1 to prevent the heat from concentrating on the heat generating part 5.

However, the prior art as described above has the following problems.

Recently, due to the convergence of portable terminals, DMB modules, camera modules, wireless-lan modules, etc. have been combined in addition to existing components. Is asking for a product. However, in the case of the existing chip has a high heat as the degree of integration increases, the size of the set is becoming increasingly slim. In particular, as the DMB module, which is in the spotlight recently, has been provided, the heating problem has been seriously raised.

However, there is no clear heat dissipation countermeasure in the case of the portable terminal, and as described above, the heat conduction sheet 7 is applied to disperse high heat of a specific part in the entire set. Therefore, there is a limit to heat dissipation by the heat conductive sheet 7 alone, and the user can feel the heat transferred to the case 1 as it is, which is a dissatisfaction of the consumer.

In addition, the high temperature generated inside the portable terminal may cause damage to the parts, a problem that the portable terminal can not operate.

Accordingly, an object of the present invention is to solve the problems of the prior art as described above, to provide a heat dissipation structure of a portable terminal for forcibly dissipating heat generated inside the portable terminal to the outside without passing through the case. .

According to a feature of the present invention for achieving the above object, the present invention includes a main body case in which the main substrate on which the heating component is mounted; A heat dissipation fan installed inside the main body case to form an air stream for discharging heat generated from the heat generating parts to the outside; And a heat conduction plate configured to transfer heat generated from the heat generating part to a path through which air flow formed by the heat radiating fan passes.

Inside the body case is provided with a heat dissipation fin provided in the heat conduction plate to transfer heat to the air flow formed by the heat dissipation fan.

One side of the main body case is formed with an inlet through which the air sucked by the heat dissipation fan passes, and a discharge port through which the heat exchanged air passes through the heat dissipation fin.

The suction port and the discharge port are formed in a straight line.

The heat dissipation fin is installed to extend in the direction connecting the inlet and outlet.

The heat dissipation fin is integrally formed with the heat conduction plate.

A thermoelectric toolless is interposed between the heat generating part and the heat conducting plate.

According to the present invention, since the heat generated from the components installed inside the main body case is forcibly discharged to the outside of the main body case without passing through the main body case, there is an advantage that the damage of the parts due to heat or the user's discomfort is prevented.

Hereinafter, a preferred embodiment of a heat dissipation structure of a portable terminal according to the present invention will be described in detail with reference to the accompanying drawings.

Figure 2 is a perspective view showing the internal configuration of a portable terminal employing a heat dissipation structure of the portable terminal according to a preferred embodiment of the present invention, Figure 3 is a perspective view showing the external configuration of the body case constituting the embodiment of the present invention.

As shown in these figures, the overall appearance of the portable terminal 10 is formed by the body case 12. The main body case 12 is in the shape of a substantially rectangular hexahedron. The corner portion of the main body case 12 is curved to give a slim and soft feeling.

The front of the main body case 12 is provided with a display unit 14 for displaying the operating state of the portable terminal 10 or a digital image and the user can input information. The display unit 14 is generally formed of a liquid crystal display (LCD) and has a touch screen function.

In addition, an intake port 16, which is a passage of air sucked by the heat radiating fan 26, will be formed at one end of the side surface of the main body case 12. The discharge port 17 corresponding to the suction port 16 is formed on the opposite side of the body case 12 in which the suction port 16 is formed. The discharge port 17 is a passage through which air whose temperature rises due to heat generated by the heat generating part 20 to be described below is discharged. The suction port 16 and the discharge port 17 are preferably formed in a straight line so that air passing through the inside and outside of the main body case 12 can flow smoothly.

Although not shown in detail in the figure, the front of the main body case 12 is provided with a button for the operation of the portable terminal 10, the side is configured for performing various functions of the portable terminal 10 It is provided. For example, there is a USB port for connecting the portable terminal 10 and an external storage device, and an earphone inserting unit for reproducing and listening to video and music files stored in the portable terminal 10.

The main board 18 is installed in the inner space of the main body case 12. The main board 18 is provided with a fastening hole 18 '(see FIG. 4A) for coupling with the heat conductive plate 22 to be described below. The main board 18 is mounted with a heat generating component 20 that generates a lot of heat internally during operation. The heating component 20 includes a central processing unit for controlling and adjusting a series of processes for receiving data from various input devices and processing the result and sending the result to an output device, and for processing image information, signal switching, and screen output. Graphics chip and multimedia signal (DMB Module) to digitally provide fixed, portable, and vehicle receivers. In particular, the DMB module is a main heating part that generates a lot of heat even in a short time compared to other parts.

On the other hand, the main substrate 18 is installed so that the thermal conductive plate 22 is in thermal contact with the upper surface of the heat generating part 20. The thermal conductive plate 22 is formed of a metal plate having high thermal conductivity such as copper and aluminum. The heat conduction plate 22 is installed to be in thermal contact with the upper surface of the heat generating part 20. The heat conduction toolless 23 is applied to abutting portion to increase heat conduction efficiency. When the heat generating part 20 and the heat conduction plate 22 are combined, a fine space may be generated due to the dimensional tolerances generated during manufacturing. If air passes through this space, thermal conduction cannot be made efficiently, so the thermoelectric toolless 23 is applied. On the other hand, the heat conducting plate 22 is formed with a fastening hole 22 'for coupling with the main substrate 18.

One end of the heat conduction plate 22 is bent in an approximately 'U' shape, and the heat dissipation fins 24 are mounted inside the 'U'-shaped portion by welding or the like. Therefore, the heat dissipation fin 24 receives heat generated from the heat generating part 20 to exchange heat with air entering the suction port 16.

The heat dissipation fins 24 are installed to extend in the direction connecting the inlet 16 and the outlet 17. This is to increase space efficiency by reducing the space occupied by the heat dissipation fins 24 as much as possible. The heat dissipation fins 24 are formed to be positioned between the suction port 16 and the discharge port 17. Accordingly, the heat dissipation fins 24 allow heat to be exchanged while the air entering through the inlet 16 passes through the heat dissipation fins 24.

One side of the heat dissipation fin 24 is provided with a heat dissipation fan 26 to form an air flow for heat dissipation. The heat dissipation fan 26 sucks air into the suction port 16 and forms an air flow to discharge the air to the discharge port 17.

Hereinafter, the operation of the heat radiation structure of the portable terminal according to the present invention having the configuration as described above in detail.

4A and 4B are working state diagrams illustrating a process in which a heat conduction plate constituting an embodiment of the present invention is mounted on a main board.

As shown in these figures, the heat generating part 20 is installed on the main substrate 18. Of course, in addition to the heating component 20, other components necessary for the operation of the portable terminal 10 are also installed on the main substrate 18.

Then, a thermoelectric toolless 23 is applied to the upper surface of the heat generating part 20. As such, by applying the thermoelectric toolless 23, the heat generated from the heat generating part 20 is more quickly conducted to the thermal conductive plate 22. Next, the heat conducting plate 22 is installed on the main board 18. The thermal conductive plate 22 is installed on the main substrate 18 by a screw S passing through the fastening holes 18 'and 22'. The heat conduction plate 22 is not limited to being coupled by a screw (S), as in the present embodiment, the heat conduction plate 22 is fitted into the slit formed on the inner surface of the main body case 10 It can be installed in various ways.

The main board 18 and the heat conducting plate 22 assembled by the above-described process are mounted in the main body case 12. Then, the heat dissipation fan 26 and other components are installed in the body case 12.

As such, when the user operates the portable terminal 10 while the assembly of the portable terminal 10 is completed, various components installed in the main body case 12 generate heat. At this time, the heat radiating fan 26 starts to operate when a certain condition. For example, the heat dissipation fan 26 may operate when the internal temperature of the main body case 12 rises above a predetermined temperature or when the main heat generating part is operated. When the heat radiating fan 26 is operated, the heat radiating fan 26 sucks cold air outside the body case 12 through the inlet 16. In this embodiment the flow of air is shown by the arrows in FIG.

The air sucked into the heat dissipation fan 26 is discharged toward the heat dissipation fin 24 and is delivered to the discharge hole 17. The air delivered to the discharge port 17 is heat-exchanged while passing through the heat dissipation fins 24, and the air is discharged to the outside of the main body case 12 through the discharge port 17.

The rights of the present invention are not limited to the embodiments described above, but are defined by the claims, and various changes and modifications can be made by those skilled in the art within the scope of the claims. It is self-evident.

In the heat radiation structure of the portable terminal according to the present invention as described in detail above, the following effects can be expected.

In the present invention, the heat conduction plate is mounted in order to release heat generated inside the portable terminal, and the heat conducted through the heat conduction plate is transferred to the cool air passing through the heat radiating fins. Therefore, the parts are prevented from being damaged by the heat generated inside the portable terminal, thereby improving the durability of the portable terminal. In particular, there is an effect that effectively dissipates the heat generated in the heat generating component having a high integration such as DM modules.

In addition, since the heat generated inside the portable terminal is forcibly discharged to the outside of the main body case, the temperature of the main body case is prevented from increasing. That is, the high temperature of the main body case is prevented, so that the user can use the portable terminal comfortably.

Claims (7)

delete A main case in which a main board on which the heat generating parts are mounted is installed; A heat dissipation fan installed inside the main body case to form an air stream for discharging heat generated from the heat generating parts to the outside; It is configured to include a heat conduction plate for transferring the heat generated in the heat generating part to the path through which the air flow formed by the heat radiating fan, The heat dissipation structure of the portable terminal, characterized in that the heat dissipation fin is provided in the heat conduction plate to transfer heat to the air flow formed by the heat dissipation fan. The method of claim 2, The heat dissipation structure of the portable terminal, characterized in that the inlet port through which the air sucked by the heat dissipation fan passes, and the discharge port through which the heat exchanged heat is made in the heat dissipation fins. The method of claim 3, wherein The suction port and the discharge port, the heat radiation structure of the portable terminal, characterized in that formed in a straight line. The method of claim 4, wherein The heat dissipation fin is a heat dissipation structure of a portable terminal, characterized in that it is installed so as to extend in the direction connecting the inlet and the discharge port. The method of claim 5, wherein The heat dissipation fin is a heat dissipation structure of a portable terminal, characterized in that formed integrally with the heat conducting plate. The method according to any one of claims 2 to 6, A heat dissipation structure of a portable terminal, characterized in that a thermoelectric toolless interposed between the heat generating part and the heat conduction plate.

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