KR100852589B1 - Portable terminal having heat exhaust structure - Google Patents

Abstract

A portable terminal having a heat dissipation structure for discharging heat generated during use of the portable terminal while maintaining the slimness of the portable terminal is disclosed. The first heat conducting member absorbs heat generated during use of the portable terminal and then conducts the absorbed heat, and the second heat conducting member is connected to the first heat conducting member and transmits heat conducted from the first heat conducting member. The first metal member discharges heat transferred from the second heat conductive member. Therefore, the heat generated by the use of the portable terminal can be efficiently discharged while maintaining the slimness of the portable terminal.

Description

PORTABLE TERMINAL HAVING HEAT EXHAUST STRUCTURE}

1 is a conceptual diagram illustrating a structure of a portable terminal having a heat dissipation structure according to an embodiment of the present invention.

FIG. 2 is a conceptual diagram illustrating a structure of a portable terminal when the slide unit shown in FIG. 1 slides up.

3 is an exploded perspective view of a portable terminal according to an embodiment of the present invention.

FIG. 4 shows an inner side surface of the fourth cover shown in FIG. 3.

FIG. 5 shows a detailed structure of the second heat conductive member shown in FIG. 3.

FIG. 6 shows an inner side surface of the battery shown in FIG. 3.

7 is a perspective view illustrating a state in which the slide unit and the main body unit illustrated in FIG. 3 are coupled to each other.

<Explanation of symbols for the main parts of the drawings>

100: slide portion 150: FPCB

154: folded portion 164: FPCB protective cap

200: main body 216: main PCB

218: second connector 222: battery

225: inner side of the battery 230: fourth cover

231: inner side of fourth cover 250: first thermally conductive member

252: junction 260: second heat conductive member

261: graphite pad 262: conductive tape

270: metal plate

The present invention relates to a portable terminal, and more particularly, to a portable terminal having a heat dissipation structure for discharging heat generated during use of the portable terminal.

In general, a portable terminal such as a mobile communication terminal or a PDA (Personal Digital Assistants) has a larger display, such as a liquid crystal display (LCD), for greater portability and ease of use. Is being miniaturized and slimmed.

Recently, as multimedia playback functions such as DMB (Digital Multimedia Broadcasting) reception or music playback are added to a portable terminal, a slide that can easily use the multimedia playback function without impairing the appearance of the portable terminal during operation. The popularity of) -type portable terminals is increasing rapidly.

The slide-type portable terminal includes a main body and a slide unit that slides up or slides down, and a hinge installed in the main body and a moving rail installed in the slide unit may be mechanically coupled to move the slide unit. Make sure

In addition, a main printed circuit board (PCB: abbreviated as "PCB") for electrically connecting electronic components installed in the main body, such as a main keypad, an internal antenna, and a battery, to the main body of the slide-type portable terminal. The slide unit is provided with a LCD driving PCB for driving the LCD and a sub PCB for electrically connecting electronic components such as a sub keypad installed in the slide unit.

In addition, the flexible printed circuit board (FPCB) has excellent workability and good heat resistance and flexibility to electrically connect the main PCB installed in the main body and the LCD driving PCB installed in the slide to ensure the movement of the slide. Hereinafter abbreviated as 'FPCB') is used.

The general slide type portable terminal as described above has a shorter distance between the main PCB installed in the main body and the main body cover due to the slimmer structure. In addition, as the functions included in the portable terminal are diversified, the usage time of the portable terminal is increasing.

Therefore, as the usage time of the portable terminal increases, the operating time of the electronic devices mounted on the main PCB increases, and heat generation according to the operation of the electronic devices increases. In addition, heat generated by the operation of the electronic device due to the slimming of the portable terminal is transmitted to the user through the cover of the portable terminal as it causes inconvenience and inconvenience in use.

In addition, heat is not properly discharged due to the use of the portable terminal, which adversely affects the operation and lifespan of the electronic device.

Accordingly, an object of the present invention is to provide a portable terminal having a heat dissipation structure for discharging heat generated during use of the portable terminal while maintaining the slimness of the portable terminal.

A portable terminal having a heat dissipation structure according to an aspect of the present invention for achieving the above object of the present invention includes a first heat conductive member and the first heat conducting member for absorbing heat generated during use of the portable terminal and conducting the absorbed heat; And a second heat conductive member connected to the first heat conductive member and transferring the heat conducted from the first heat conductive member, and a first metal member discharging the heat transferred from the second heat conductive member. The portable terminal having the heat dissipation structure includes a body cover on which the first heat conductive member is installed, a flexible printed circuit board on which the second heat conductive member is installed, and a battery on which the first metal member is installed. It may further include. The first and second heat conductive members may be graphite pads. The first heat conductive member may be provided with a junction for connecting the second heat conductive member. The portable terminal having the heat dissipation structure may further include a second metal member between the second heat conductive member and the first metal member. The second metal member may be formed of a phosphor bronze plate and transfer heat transferred from the second heat conductive member to the first metal member.

In addition, a portable terminal having a heat dissipation structure according to another aspect of the present invention for achieving the object of the present invention comprises a first circuit board disposed in the first region where the battery is located and the second region not overlapping the battery. A main body including, a slide unit mechanically coupled to the main body to move relative from the main body by an external force, and including a second circuit board, the first circuit board and the second circuit board electrically. A flexible printed circuit board (PCB) connected to each other, and installed at a position opposite to the first circuit board and absorbing heat generated from an electronic element mounted on the first circuit board, and conducting the absorbed heat. A first heat conductive member and the heat transfer member are installed on the flexible printed circuit board and connected to the first circuit board to conduct heat transferred from the first heat conductive member. It is provided on one side of the second heat conductive member and the battery comprises a first metal member for discharging the said heat transfer from said second heat conductive members.

As the inventive concept allows for various changes and numerous embodiments, particular embodiments will be illustrated in the drawings and described in detail in the written description.

However, this is not intended to limit the present invention to specific embodiments, it should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention.

Hereinafter, with reference to the accompanying drawings, it will be described in detail a preferred embodiment of the present invention. Hereinafter, the same reference numerals are used for the same components in the drawings, and duplicate descriptions of the same components are omitted.

Terms such as first and second may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be referred to as the second component, and similarly, the second component may also be referred to as the first component. The term and / or includes a combination of a plurality of related items or any item of a plurality of related items.

1 is a conceptual diagram showing the structure of a portable terminal having a heat dissipation structure according to an embodiment of the present invention, Figure 2 is a conceptual diagram showing the structure of a portable terminal when the slide portion of the portable terminal shown in FIG. to be.

1 and 2, the portable terminal according to an embodiment of the present invention is composed of a slide unit 100 and the main body 200, the slide unit 100 is the first cover 110 and the second The cover 130 is coupled to face each other, and the sub-PCB 112, the LCD 114, and the LCD driving PCB 116 are installed between the first cover 110 and the second cover 130.

In addition, a first connector 118 is provided on the LCD driving PCB 116, a window 122 for protecting the LCD 114 is installed at the center of the first cover 110, and the second cover 130 is provided. The rear side of the moving rail 132 is installed.

The main body 200 has the third cover 210 and the fourth cover 230 are coupled to face each other, the internal antenna 212, the main keypad (between the third cover 210 and the fourth cover 230) 214, a main PCB 216 is provided, and a second connector 218 is provided on the rear surface 217 of the main PCB 216. In addition, the removable cover 222 including the battery cell 226 is mounted on the third cover 210.

And the hinge 232 is installed on the front of the third cover 210 is mechanically coupled to the moving rail 132 installed on the slide unit 100 to combine the main body 200 and the slide unit 100 and to the external force As a result, the slide unit 100 slides up in the direction of arrow a and slides down in the direction opposite to arrow a.

In addition, the FPCB 150 having a predetermined clearance distance is connected to the first connector 118 of the slide unit 100 and the second connector 218 of the main body unit 200, thereby driving the LCD driving PCB 116 and the main PCB. 216 is electrically connected.

The FPCB 150 rotates a predetermined portion of the FPCB 150 by 180 degrees to ensure the movement of the slide part 100 and to substantially change the connection direction of the other end of the FPCB 150 connected to the main PCB 216 by 180 degrees. Fig. 1 includes a folded portion 154 formed by thinly folding the folded portion. The folded portion 154 is positioned between the upper surface of the battery 222 of the body portion 200 and the rear surface of the hinge 232.

In addition, the FPCB 150 is in contact with the first bent portion 156 to switch the installation direction of the FPCB 150 substantially 180 degrees between one end connected to the first connector 118 and the folded portion 154. A first formed between the folded portion 154 and the other end to easily connect the second connector 218 of the main PCB 216 and the other end of the FPCB 150 installed at a position lower than the position where the curved part 154 is installed. A second bend 158 and a third bend 162.

In addition, the FPCB 150 may be easily installed and the FPCB 150 may be protected from the external environment after the FPCB 150 is installed, and the folding part 154 of the FPCB 150 may be prevented from flowing when the slide part 100 is moved. FPCB protective cap 164 is installed to.

The FPCB protective cap 164 is installed between one side of the FPCB 150 and the inner side 225 of the battery 222.

The inner surface of the fourth cover 230 absorbs and absorbs heat generated from electronic devices (for example, electronic devices corresponding to the transceiver of the mobile communication) mounted on the rear surface 217 of the main PCB 216. A first heat conductive member 250 having a predetermined size is installed to conduct heat.

One side of the FPCB 150 is connected to the first heat conducting member 250, the second heat conducting member for absorbing heat conducted from the first heat conducting member 250 and conducting the absorbed heat to the FPCP protective cap 164. 260 is installed.

As shown in FIG. 1 and FIG. 2, the main PCB 216 installed in the main body 200 is miniaturized and installed so as not to overlap with the battery 222 in order to slim the portable terminal. Then, in order to discharge heat generated from the electronic components mounted on the rear surface 217 of the main PCB 216, the first heat conductive member 250 is installed on the inner side of the fourth cover 230, and the FPCB 150 Installing a second heat conductive member 260 connected to the first heat conductive member 250 on one side of the transfer the heat generated from the electronic component to the second heat conductive member 260 through the first heat conductive member 250 and The second heat conductive member 260 transfers heat to the FPCB protective cap 164. The FPCB protective cap 164 transfers heat to the inner surface 225 of the battery so that heat generated due to the use of the portable terminal is discharged through the battery inner surface 225 made of a metal material.

3 is an exploded perspective view of a portable terminal according to an embodiment of the present invention.

Referring to FIG. 3, the portable terminal according to the exemplary embodiment of the present invention includes a slide unit 100 and a main body unit 200, and the slide unit 100 includes a first cover 110 and a second cover 130. Are opposed to each other. The rear side of the second cover 130 is provided with a moving rail 132 for the movement of the slide. The hinge 232 fixed to the third cover 210 of the main body 200 is mechanically coupled to the moving rail 132.

In addition, the movable rail 132 has a first guide having a predetermined size to allow the FPCB 150 to electrically connect the LCD driving PCB 116 of the slide unit 100 and the main PCB 216 of the main body unit 200. The hole 134 is formed and the first bent portion 156 of the FPCB 150 is installed to penetrate the first guide hole 134.

In addition, a folded portion 154 of the FPCB 150 is positioned between the rear surface of the hinge 232 and the front surface of the third cover 210 of the main body 200 to substantially rotate the installation direction of the FPCB 150 by 180 degrees. By switching as much as possible, the other end of the FPCB 150 may be connected to the second connector 218 of the main PCB 216 installed in the main body 200.

The battery accommodating part 224 for accommodating the battery 222 is provided on the upper part of the third cover 210 of the main body part 200, and the main PCB 216 is provided on the lower part of the third cover 210. Is installed. In addition, a second guide hole 236 having a predetermined size is formed in the lower portion of the battery accommodating part 224 to connect the other end of the FPCB 150 to the main PCB 216 and to facilitate the installation of the FPCB 150. .

The FPCB 150 penetrates the first guide hole 134 and the second guide hole 236 between the LCD driving PCB 116 of the slide part 100 and the main PCB 216 of the main body part 200. After connection, the FPCB protective cap 164 is installed.

The FPCB protective cap 164 may be formed by injection molding or pressing a thin metal material. The metal used as the FPCB protective cap 164 may be a Phosphor Bronze Sheet (PBS) having high thermal conductivity and low unit cost.

Graphite pads may be used for the first thermally conductive member (see 250 of FIG. 4) and the second thermally conductive member 260 provided on the inner side of the fourth cover 230 and one side of the FPCB 150.

Graphite pads are easy to install due to their flexible characteristics and have high thermal conductivity. The graphite pad applied to the embodiment of the present invention has an anisotropy characteristic of about 30 times higher than the thermal conductivity in the thickness direction (5 to 16 W / mK) in the length and width directions (240 to 500 W / mK). Efficiently dissipates heat generated in the electronic components mounted at 216.

FIG. 4 shows an inner side surface of the fourth cover shown in FIG. 3.

Referring to FIG. 4, the fourth cover 230 is coupled to face the third cover 210 of the main body 200, and protects the main PCB 216 installed in the third cover 210 from the external environment. .

The inner surface 231 of the fourth cover 230 has a first heat conductive member 250 for absorbing heat generated from electronic components mounted on the rear surface 217 of the main PCB 216 and conducting the absorbed heat. Is installed.

In addition, the predetermined portion of the first heat conductive member 250 contacts a predetermined portion of the first heat conductive member 250 to transfer the heat absorbed by the first heat conductive member 250 to the second heat conductive member 260 in a predetermined region of the first heat conductive member 250. 252).

FIG. 5 shows a detailed configuration of the second heat conductive member shown in FIG. 3.

Referring to FIG. 5, the second heat conductive member 260 is installed on one side of the FPCB 150, and is connected to the junction 252 of the first heat conductive member 250 to be transferred from the first heat conductive member 250. To the FPCB protective cap 164

The second thermal conductive member 260 facilitates the installation of the graphite pad 261 to absorb the heat transferred from the first thermal conductive member 250 and the graphite pad 261 on one side of the FPCB 150. And a conductive tape 262 for protecting the graphite pad 261. The predetermined portion 263 of the conductive tape 262 is connected to the junction 252 provided in the first heat conductive member 250.

In another embodiment of the present invention, the first heat conductive member 250 and the second heat conductive member 260 may be formed of one component.

FIG. 6 shows an inner side surface of the battery shown in FIG. 3.

Referring to FIG. 6, the inner surface 225 of the battery 222 according to the embodiment of the present invention is provided with a metal plate 270 for dissipating heat transferred from the FPCB protective cap 164.

The metal plate installed on the inner side 225 of the battery 222 may be manufactured by injecting SUS (Steel Use Stainless) with a thickness of substantially 0.15 mm.

7 is a perspective view illustrating a state in which the slide unit and the main body unit illustrated in FIG. 3 are coupled to each other.

Referring to FIG. 7, the slide unit 100 and the main body 200 are installed by fixing the hinge 232 mechanically coupled to the movable rail 132 installed on the slide unit 100 to the third cover 210. The third cover 210 is mechanically coupled.

Then, the FPCB 150 is connected to the first connector 118 provided on the LCD driving PCB 116 of the slide part 100 and the second connector 218 provided on the main PCB 216 of the main body part 200. The LCD driving PCB 116 of the slide unit 100 and the main PCB 216 of the main body 200 are electrically connected to each other.

In addition, after the FPCB 150 is connected, the FPCB 150 positioned in the second guide hole 236 of the main body 200 is protected from the external environment, and the FPCB protective cap is prevented from flowing. 164 is installed on the third cover 210.

Therefore, heat generated from the electronic components 219 mounted on the main PCB 216 is absorbed by the first heat conducting member 250 installed on the inner side 231 of the fourth cover 230 to connect the junction 252. It is connected to the first heat conductive member 250 and is conducted to the second heat conductive member 260 installed on one side of the FPCB 150.

The heat conducted to the second heat conductive member 260 is transferred to the FPCB protective cap 164 in contact with the second heat conductive member 260, and the inner surface 225 of the battery 222 in contact with the FPCB protective cap 164. It is delivered to the metal plate 270 and is discharged through the metal plate 270.

According to the portable terminal having the heat dissipation structure as described above, the first heat conductive member is installed on the inner side of the fourth cover, and the second heat conductive member is installed on one side of the FPCB to be connected to the first heat conductive member. The second heat conductive member is in contact with the FPCB protection cap, and the FPCB protection cap is in contact with the metal plate of the battery inner surface.

Therefore, the heat generated from the electronic components mounted on the back of the main PCB is transferred to the FPCB protective cap through the first and second thermal conductive members, and the heat transferred to the FPCB protective cap is transferred to the metal plate on the inner side of the battery. Ejected through the metal plate of the battery inner side is not delivered to the user of the portable terminal.

Therefore, heat generated by the use of the portable terminal can be discharged while maintaining the slimness of the portable terminal.

Although described with reference to the embodiments above, those skilled in the art will understand that the present invention can be variously modified and changed without departing from the spirit and scope of the invention as set forth in the claims below. Could be.

Claims (12)

A first heat conducting member for absorbing heat generated during use of the portable terminal and conducting the absorbed heat; A second heat conductive member connected to the first heat conductive member and transferred to the heat conducted from the first heat conductive member and installed in a partial region of the flexible printed circuit board; And And a heat dissipation structure including a first metal member discharging the heat transferred from the second heat conductive member. The portable terminal of claim 1, wherein the portable terminal has a heat dissipation structure. A main cover on which the first heat conductive member is installed; A flexible printed circuit board on which the second heat conductive member is installed; And A portable terminal having a heat dissipation structure, characterized in that it further comprises a battery in which the first metal member is installed. The method of claim 1, The first and second heat conducting members are a portable terminal having a heat dissipation structure, characterized in that the graphite pad (graphite pad). The method of claim 1, The first heat conducting member has a heat dissipation structure, characterized in that a junction for connecting the second heat conducting member is provided. The method of claim 1, The portable terminal having the heat dissipation structure further comprises a second metal member between the second heat conductive member and the first metal member. The method of claim 5, And the second metal member is formed of a phosphor bronze plate and transfers heat transferred from the second heat conductive member to the first metal member. A main body part including a first circuit board disposed in a first area in which a battery is located and a second area not overlapping the battery; A slide part mechanically coupled to the main body part to perform a relative movement from the main body part by an external force and include a second circuit board; A flexible printed circuit board electrically connecting the first circuit board and the second circuit board; A first heat conductive member disposed at a position opposite to the first circuit board and absorbing heat generated from an electronic element mounted on the first circuit board and conducting the absorbed heat; A second heat conductive member installed in a portion of the flexible printed circuit board and connected to the first circuit board to transfer the heat conducted from the first heat conductive member; And And a heat dissipation structure installed on one side of the battery and including a first metal member discharging the heat transferred from the second heat conductive member. The method of claim 7, wherein The first and second heat conducting members are a portable terminal having a heat dissipation structure, characterized in that the graphite pad (graphite pad). The method of claim 7, wherein The first heat conducting member has a heat dissipation structure, characterized in that a junction for connecting the second heat conducting member is provided. The portable terminal of claim 7, wherein the first heat conducting member is disposed on the first circuit board. The method of claim 7, wherein The portable terminal having the heat dissipation structure further comprises a second metal member between the second heat conductive member and the first metal member. The method of claim 11, And the second metal member is formed of a phosphor bronze plate and transfers heat transferred from the second heat conductive member to the first metal member.

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