JP2005252422A - Portable terminal device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a portable terminal device capable of preventing a foreign material from intruding into the portable terminal and externally dissipating generated heat in the portable terminal without the need for mounting a separate member to the portable terminal for heat dissipation. <P>SOLUTION: In the portable terminal, a cover for forming a case clamps a heat dissipation member and heat generated internally is externally dissipated via the heat dissipation member. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a mobile terminal device such as a mobile phone.

  Recently, mobile terminal devices such as mobile phones and PDAs have become very popular.

  In such device design of mobile terminal devices, many functions have been developed and installed in recent devices, and many multifunctional devices have been provided. In the case of such a multi-function device, a large amount of electric capacity tends to be consumed for its various functions, and the amount of heat generated inside the terminal also tends to increase.

  If this amount of heat is large, the heat builds up inside the device, which may lead to malfunctions in the various circuits of the device, and the internal heat of the device is transmitted to the housing, so that the user of the portable terminal device can use the device. If you hold it in your hand, you may feel it is hot.

In particular, if the user of the device is burned due to internal heat generation of the mobile terminal device, it becomes a PL (Product Liability) problem. On top of that, it can be a big problem.
Therefore, various proposals related to heat radiation from the internal heat of the portable terminal device have been made.

  For example, in the first embodiment of the invention described in Patent Document 1, an air hole is provided on the back surface of the portable wireless device, and the internal heat of the portable wireless device is radiated by the air hole.

  Further, in the second and third embodiments of the invention described in Patent Document 1, a removable heat-dissipating adapter is plugged into the portion of the portable wireless device so as to close the hole provided in the case of the portable wireless device. The internal heat of the portable wireless device is radiated by this heat radiating adapter.

Japanese Patent Laid-Open No. 2003-244011

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

  That is, in the first embodiment of the invention described in Patent Document 1, since the air holes provided in the housing of the apparatus are exposed as they are, foreign substances such as dust and dust are likely to enter the apparatus and cause a failure. was there.

  Further, in the second and third embodiments of the invention described in Patent Document 1, the heat dissipation adapter can be attached to and detached from the device, which may cause the user to forget to wear it. Therefore, there is a risk that foreign matter may enter and cause a failure, and the heat dissipation effect may not be expected.

  The present invention has been made in view of the above points, can prevent foreign matter from entering the apparatus, and does not need to be attached to a separate member for heat radiation, and heat generated in the apparatus An object of the present invention is to provide a portable terminal device that can dissipate heat.

  In order to solve the above-described problems, the present invention is characterized in that in a mobile terminal device, a heat radiating member is sandwiched between covers that form a casing, and internal heat is radiated to the outside through the heat radiating member.

  Further, the present invention is characterized in that, in the invention described in claim 1, a portion is formed which connects the inside of the terminal and the outside of the terminal through only the heat radiating member.

  In the invention according to claim 1, the heat dissipation member is an appearance member.

  In the invention according to claim 1, the present invention is characterized in that when the operator holds the portable terminal device by hand, the hand does not directly touch the heat radiating member.

  In the invention according to claim 1, the heat dissipation member has a higher thermal conductivity than the housing member.

  Moreover, this invention is the invention of Claim 1, The said heat radiating member has a heat radiating fin, It is characterized by the above-mentioned.

  In the invention according to claim 1, the heat radiating member is structured such that the heat radiating member sandwiches the cover, and is sandwiched by the cover.

  According to the present invention, a portable terminal that can prevent foreign matter from entering the device and can dissipate heat generated in the device to the outside without having to be attached to another member for heat dissipation. An apparatus can be provided.

Further, according to the present invention, the heat generated inside the terminal is released to the outside of the terminal through the heat radiating member having good heat conduction, so that there is an effect of preventing melting due to a temperature rise of the terminal housing.
Moreover, according to this invention, there exists an effect which prevents the influence which it has on the human body, such as a burn by the temperature rise of a terminal housing | casing.
Moreover, according to this invention, there exists an effect that a heat radiating member can be used as a decorating member.

  Further, according to the present invention, since the hole of the housing is sealed with the heat radiating member, it is possible to prevent foreign matter from entering the apparatus.

  According to the present invention, since the heat radiating member is fixed to the housing, it is possible to prevent forgetting to attach the heat radiating member.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

  FIG. 1 is a perspective view showing the entirety of an embodiment of a portable terminal device according to the present invention.

  In this embodiment, a foldable mobile phone will be described as an example of the mobile terminal device.

  In FIG. 1, reference numeral 10 is a foldable portable terminal device, reference numeral 10A is an operation side casing (hereinafter referred to as “first casing”), and reference number 10B is a display side casing (hereinafter referred to as “first casing”). (Referred to as “second housing”).

  The first housing 10 </ b> A includes a front cover 11 and a back cover 12. The front cover 11 is provided with a plurality of holes, through which the operation keys 13 are exposed.

The second housing 10B includes a front cover 15 and a back cover 16, and a liquid crystal protective cover 17 made of a transparent material that transmits the liquid crystal screen 21 is attached to the front cover 15, and the back cover 16 has a communication function. An antenna 18 is provided.
19a is a receiver provided in the second casing 10B, 22 is a camera section provided in the second casing 10B, and 19b is a transmitter provided in the first casing.

  The first housing 10A and the second housing 10B are attached to each other via a hinge mechanism 20 so as to be opened and closed.

  The heat radiating member 14 is attached so as to be sandwiched between the front cover 11 and the back cover 12 of the first housing 10A.

  The heat radiating member 14 may be integrated with either the front cover 11 or the back cover 12 of the first housing 10A by bonding with a double-sided tape, an adhesive or the like for the purpose of improving the strength.

  The heat radiating member 14 is made of aluminum, magnesium, or the like having a higher thermal conductivity than the front cover 11 and the back cover 12.

  Moreover, the heat radiating member 14 is an external appearance member which improved the external appearance by decorating external appearance by rust prevention processing, anodized processing, etc.

  FIG. 2 is a cross-sectional perspective view of the first housing 10 </ b> A showing the heat dissipation part structure of the mobile terminal device 10 shown in FIG. 1.

  In FIG. 2, the heat radiating member 14 is sandwiched between the front cover 11 and the back cover 12, and the terminal internal heat 30 inside the first housing 10 </ b> A passes through the heat radiating member 14 and is outside the first housing 10 </ b> A. The heat is dissipated to 31.

  The heat radiating member 14 is formed with heat radiating fins 60 toward the terminal outside 31, and the heat radiating area with respect to the terminal outside 31 is made larger than the inside.

  Further, the heat dissipating fins 60 of the heat dissipating member 14 do not protrude from the outer surfaces of the case side surface 40 of the front cover 11 and the case side surface 50 of the back cover 12, and the portion of the heat dissipating member 14 that does not have the heat dissipating fins 60 is further hollow. The heat radiation member 14 is retracted from the outer surface of the housing side end surface 40 or the housing side end surface 50 so that the operator of the mobile terminal device 10 does not easily touch the heat radiation member 14 with the hand. It is.

  Further, as can be seen with reference to FIG. 2, the heat radiating member 14 of the present embodiment sandwiches the end of the front cover 11 by the heat radiating member 14, and also sandwiches the end of the back cover 12 by the heat radiating member 14, By doing in this way, while the space | gap between the front cover 11 and the heat radiating member 14 is sealed with the heat radiating member 14, the heat radiating member 14 is made hard to remove | deviate from 10 A of housings | casings.

  In addition, as can be seen with reference to FIG. 2, the front cover 11 and the back cover 12 are not in contact with each other in the portion of the heat radiating member 14, and only the heat radiating member 14 is connected between the inside of the terminal and the outside of the terminal. Through which the heat dissipation efficiency is improved.

  In the embodiment shown in FIG. 1, the heat radiating member 14 is attached to the first housing 10A side. However, this is a power amplifier and a power IC serving as a heating element on the first housing side. Etc. are assumed. When the heating element is mounted on the second housing side, it is desirable to attach a similar heat radiating member to the second housing side. Moreover, it does not matter as a structure which attaches the same heat radiating member to both the 1st housing | casing side and the 2nd housing | casing side.

  The present invention is also applicable to each case of a portable terminal device that is not a foldable type, for example, a type in which two cases are slid (linear slide, rotary slide). It is applicable also to the housing | casing of the portable terminal device comprised by these.

  Further, in the above-described embodiment, when the apparatus is configured by combining two covers (front cover and back cover), the heat radiating member is sandwiched between the two covers, but the present invention is limited to this. Instead, in the case where the housing of the apparatus is configured by combining three or more housing case components, a configuration in which a heat dissipation member is arbitrarily provided between the respective housing case components may be employed.

It is a perspective view showing the whole of one embodiment of a portable terminal device by the present invention. It is a cross-sectional perspective view of the 1st housing | casing which shows the thermal radiation part structure of the portable terminal device shown in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Portable terminal device 10A 1st housing | casing 10B 2nd housing | casing 11 Front cover 12 Back cover 13 Operation key 14 Heat radiation member 15 Front cover 16 Back cover 17 Liquid crystal protective cover 18 Antenna 19a Ear receiving part 19b Transmission part 20 Hinge mechanism 21 Liquid crystal screen 22 Camera unit 30 Terminal internal heat 40 Housing side surface 50 Housing side surface 60 Radiation fin

Claims (7)

  A portable terminal device characterized in that a heat radiating member is sandwiched between covers that form a housing, and internal heat is radiated to the outside through the heat radiating member.   The portable terminal device according to claim 1, wherein a portion that connects the inside of the terminal and the outside of the terminal through only the heat radiating member is formed.   The mobile terminal device according to claim 1, wherein the heat radiating member is an appearance member.   The portable terminal device according to claim 1, wherein when the operator holds the portable terminal device by hand, the hand does not directly touch the heat radiating member.   The portable terminal device according to claim 1, wherein the heat dissipation member has a higher thermal conductivity than the housing member.   The portable terminal device according to claim 1, wherein the heat radiating member has a heat radiating fin.   The portable terminal device according to claim 1, wherein the heat dissipation member has a structure in which the heat dissipation member sandwiches the cover, and is sandwiched by the cover.

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