JP2007135134A - Mobile communication terminal - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To suppress a temperature increase of an HDD installed in a mobile phone. <P>SOLUTION: A mobile phone has a communication antenna 9, installs an information storing disk device 8, and an electrical insulating material 10 provided between the disk device 8 and the antenna 9 so that heat from the disk device 8 may be transmitted to the antenna 9 by conductive heat transfer. This electrical insulating material 10 is a sheet heat transfer member, one end is stuck to the disk device 8 so as to cover an outer surface of the disk device 8, and the other end is stuck to the antenna 9 to cover the margins of the antenna 9. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a portable communication terminal incorporating a disk device such as an HDD.

  In recent years, mobile phones have become more and more multifunctional, and some mobile phones have not only a calling function but also a function for viewing video and music, for example. This type of mobile phone requires a large-capacity storage device. For example, a mobile phone with a built-in HDD is known (see Patent Document 1). The mobile phone described in Patent Document 1 is provided with a display unit that is rotatable with respect to the main body unit, and an HDD is built in the main body unit so as to suppress heat input from the display unit to the HDD.

JP 2005-284335 A

  However, even if the heat input from the display unit to the HDD is suppressed, the HDD itself generates heat, and thus the temperature rise of the HDD and its surrounding components cannot be effectively suppressed.

The present invention is a portable communication terminal having a communication antenna and having a built-in disk device for information storage, wherein the heat from the disk device is transferred to the antenna by heat conduction. It is characterized by comprising an electrical insulating material interposed therebetween.
It is preferable that the electrical insulating material is composed of a sheet-like heat conducting member.
In this case, the end of the heat conducting member can be brought into close contact with the antenna so as to cover the outer peripheral surface of the antenna, and can also be brought into close contact with the disk device so as to cover the outer peripheral surface of the disk device.
A first main body portion and a second main body portion rotatably connected to the first main body portion via a connecting portion; an antenna is provided in the first main body portion; It may be built in the second body part, and the heat conducting member may extend from the first body part to the second body part through the inside of the connecting part.
Furthermore, the image sensor further includes a first surface and a second surface that are parallel to each other, and a third surface and a fourth surface that are orthogonal to the first surface and the second surface and are parallel to each other. It may have a main body part whose outer shape is defined by In this case, the antenna is provided closer to the first surface than the second surface, while the disk device is provided closer to the third surface than the fourth surface, and the imaging device is located closer to the first surface. It is preferable that the second surface is provided closer to the fourth surface than the third surface.
In the case where the first main body portion that accommodates various components and the second main body portion that accommodates various components are rotatable, an image sensor is disposed in the first main body portion, and the antenna is connected to the first main body portion. The image sensor may be provided close to the other end side of the first main body portion. Alternatively, an image sensor is provided in the second main body, the disk device is provided close to one end of the second main body, and the image sensor is provided close to the other end of the second main body. Also good.

  ADVANTAGE OF THE INVENTION According to this invention, the temperature rise of the disk apparatus for information storage built in the portable communication terminal can be suppressed effectively.

-First embodiment-
Hereinafter, a first embodiment in which a mobile communication terminal according to the present invention is applied to a mobile phone will be described with reference to FIG.
FIG. 1A is a front view showing the internal structure of the mobile phone according to the first embodiment, and FIG. 1B is a cross-sectional view of the mobile phone taken along line bb in FIG. 1A. FIG. 1C is a sectional view taken along the line cc of FIG. 1A. Here, as shown in the figure, the vertical and horizontal directions and the front-rear direction of the mobile phone are defined, and the arrangement of each part will be described according to this definition.

  1 has a main body 100 whose outer shape is defined by an upper surface 100a, a lower surface 100b, a left surface 100c, a right surface 100d, a front surface 100e, and a rear surface 100f that are parallel to each other, and has a thickness in the front-rear direction with respect to the width in the left-right direction. Presents a thin and thin shape. An LCD 2 is disposed on the upper part of the main body 100 covered with the resin body 1, and the entire front surface of the LCD 2 is covered with an acrylic protective panel 3. A plurality of (in the figure, 12) operation buttons 4 for inputting a telephone number and the like are provided at the lower part of the main body 100, and a substrate 5 is disposed behind the operation buttons 4. The substrate 5 is provided with a dome switch 6 corresponding to each operation button 4, and the operation of the operation button 4 is detected by the dome switch 6. A battery 7 is disposed behind the substrate 5.

  A small (for example, about 1 inch) and large-capacity HDD 8 (Hard Disk Drive) is disposed behind the substrate 5. The HDD 8 is a storage device configured to have a hard disk rotatably provided in an HDD case, and to read and write information from the hard disk by bringing a magnetic head close to the hard disk rotated at high speed in the case. Various information such as digital video, music, and game programs can be stored in the hard disk. Projecting HDD support portions 1a are provided at a plurality of locations on the inner surface of the body 1, and the peripheral portion of the HDD 8 (HDD case) is supported by the HDD support portion 1a.

  A substantially cylindrical communication antenna 9 is spaced apart from the HDD 8 and extends in the vertical direction at the left end of the main body 100 on the left side of the HDD 8. The upper end of the antenna 9 protrudes from the upper end surface of the body 1, and the lower end portion is supported by an antenna support portion 1 b provided on the body 1 below the lower end surface of the HDD 8. The length of the antenna 9 is set to a length corresponding to the wavelength of the radio wave to be used. The antenna 9 is made of at least a material having better thermal conductivity than the body 1. In addition, although a microphone, a speaker, etc. are arrange | positioned at the main body 100, these illustration is abbreviate | omitted.

  By the way, the HDD 8 is incorporated in the body 1 of the mobile phone according to the present embodiment, but the HDD 8 operates when reading and writing information, and itself generates heat. Therefore, the temperature of the body 1 rises using the HDD 8 as a heat source, which not only makes the telephone operator uncomfortable, but also causes an increase in the temperature of internal components such as the substrate 5, which may adversely affect the life and performance of the mobile phone. is there. In order to prevent this, in the present embodiment, the HDD 8 and the antenna 9 are connected via the heat transfer sheet 10 as described below, and the heat from the HDD 8 is radiated to the outside via the antenna 9.

  The heat transfer sheet 10 is made of a flexible sheet-like (for example, about 0.2 mm to 0.3 mm thick) electrical insulating material having high thermal conductivity, and an adhesive surface on which an adhesive is applied. Is formed. As shown in FIG. 1B, one end portion of the heat transfer sheet 10 is bonded so as to cover the entire surface of the HDD 8 from the front surface to the right side surface and the rear surface of the HDD 8, and the other end portion is attached to the peripheral surface of the antenna 9. The antenna 9 is bonded so as to cover the entire circumference.

  The heat transfer sheet 10 is also elastic and is interposed between the HDD 8 and the HDD support portion 1 a and functions as a buffer material for the HDD 8. The heat transfer sheet 10 is provided apart from other components (the body 1, the LCD 2, the substrate 5, etc.) other than being in contact with the HDD 8, the antenna 9 and the HDD support portion 1 a, and an air layer is provided around the heat transfer sheet 10. 11 is formed. Note that the contact area between the heat transfer sheet 10 and the HDD support portion 1 a is smaller than the contact area between the heat transfer sheet 10 and the antenna 9.

Main operations of the mobile communication terminal according to the first embodiment will be described.
For example, when viewing images, music, etc. using a mobile phone, the HDD 8 operates and generates heat in order to read and write information from the hard disk. Since the surface of the HDD 8 is covered with the heat transfer sheet 10 having a high thermal conductivity, the heat from the HDD 8 is efficiently transferred to the heat transfer sheet 10. Most of the heat transferred to the heat transfer sheet 10 is transferred to the antenna 9 having a contact area larger than that of the HDD support 1a and having a high thermal conductivity, and from the front end of the antenna 9 exposed to the outside. Heat is dissipated.

  As a result, an increase in the temperature of the HDD 8 can be suppressed, and the body 1, the substrate 5 and the like can be prevented from becoming hot due to heat from the HDD 8. In this case, since the user of the mobile phone does not need to touch the antenna 9 when the HDD 8 is operated, heat dissipated from the antenna 9 does not give the user an uncomfortable feeling. In addition, the heat transfer sheet 10 is in close contact with the peripheral surface of the antenna 9, but the heat transfer sheet 10 is an electrical insulating material, so the characteristics of the antenna 9 are not impaired.

According to the above 1st Embodiment, there can exist the following effects.
(1) Since the HDD 8 is bonded to one end of the heat transfer sheet 10, which is an electrically insulating material having high thermal conductivity, and the antenna 9 is bonded to the other end of the heat transfer sheet 10, the heat from the HDD 8 is transferred to the antenna 9. Heat can be radiated to the outside, and the temperature rise of the HDD 8 can be effectively suppressed.
(2) Since the heat transfer sheet 10 is a flexible sheet-like member, it can be easily bonded to the HDD 8 and the antenna 9, and there are few restrictions on the degree of freedom of arrangement of the HDD 8 and the antenna 9.
(3) Since the outer peripheral surface of the HDD 8 is covered with the heat transfer sheet 10, most of the heat from the HDD 8 is transferred to the heat transfer sheet 10 and suppresses heat transfer to the body 1 and the substrate 5 through the air layer 11. can do.
(4) Since the outer peripheral surface of the antenna 9 is covered with the heat transfer sheet 10, the contact area between the heat transfer sheet 10 and the antenna 9 is increased, and the heat from the HDD 8 can be efficiently transferred to the antenna 9.
(5) Since the heat transfer sheet 10 is interposed between the HDD 8 and the HDD support portion 1a and functions as a buffer material, it is not necessary to provide a dedicated buffer material.
(6) Since a part of the peripheral edge of the HDD 8 is supported by the HDD support portion 1a, the contact area between the heat transfer sheet 10 and the HDD support portion 1a is small, and the amount of heat transfer to the body 1 side can be reduced.

-Second Embodiment-
A second embodiment of the portable communication terminal according to the present invention will be described with reference to FIG.
In the first embodiment, the display unit on which the LCD 2 is arranged and the operation unit on which the operation buttons 4 are arranged are applied to the mobile phone provided in the single main body 100. However, in the second embodiment, the operation unit is operated. The present invention is applied to a foldable mobile phone whose display unit can be rotated with respect to the unit.

  FIG. 2A is a front view showing the internal structure of the mobile phone according to the second embodiment, and FIG. 2B is a cross-sectional view of the mobile phone taken along line bb in FIG. 2A. FIG. 2C is a longitudinal sectional view taken along the line cc in FIG. 2A, and FIG. 2D is a transverse sectional view taken along the line dd in FIG. 2A. . In addition, the same code | symbol is attached | subjected to the location same as FIG. 1, and the difference with 1st Embodiment is mainly demonstrated below.

  An upper main body 103 (display unit) is rotatably connected to the lower main body 102 (operation unit) via a hinge unit 104, and FIG. 2 shows a state in which the upper main body 103 is opened with respect to the lower main body 102. . As shown in FIG. 2C, the hinge portion 104 on the lower main body 102 side has a shape protruding forward by the thickness of the upper main body 103 (substantially L-shaped in cross section), and when the upper main body 103 is folded. The upper body 103 is accommodated in the lower body 102 without a step.

  An operation button 4 is provided on the front surface of the lower main body 102, and a substrate 5 (hereinafter referred to as a lower substrate) is disposed behind the operation button 4. An HDD 8 is disposed behind the lower substrate 5 so as to be separated from the lower substrate 5, and a battery pack 21 integrated with the battery 7 is disposed behind the HDD 8. The battery pack 21 is detachable from the body 1 and forms a part of the appearance of the lower main body 102.

  The upper body 103 is provided with an LCD 2, and the front surface of the LCD 2 is covered with a protective panel 3. An upper substrate 22 is disposed behind the LCD 2. The antenna 9 is provided on the left side of the LCD 2 and the upper substrate 22, the upper end of the antenna 9 protrudes from the upper end surface of the body 1, and the lower end portion is supported by the antenna support portion 1 b. A camera lens 23 is attached to the rear surface of the upper main body 103, and the camera lens 23 is disposed in the vicinity of the upper right corner of the upper main body 103 that is away from both the antenna 9 and the hinge portion 104. A CCD 24 is disposed in the back (front) of the camera lens 23, and a light blocking rubber 25 that blocks light from the surroundings from the camera lens 23 to the CCD 24 is provided.

  The upper end portion of the lower main body 102 and the lower end portion of the upper main body 103 constituting the hinge portion 104 are each formed in an uneven shape, and these are fitted so as to be rotatable. That is, a pair of left and right convex portions 102a and 102b is provided at the upper end portion of the lower main body 102, and a pair of left and right convex portions 103a and 103b are provided at the lower end portion of the upper main body 103. The convex portion 103b is fitted in the concave portion, and the convex portion 102a is fitted in the concave portion between the convex portions 103a and 103b. The convex portions 102a and 103a and the convex portions 102b and 103b are connected to each other via a hinge shaft 26 extending in the left-right direction.

  One end portion of the flexible substrate 28 is connected to the upper end portion of the lower substrate 5 via the connector 27 between the convex portions 102a and 102b. The flexible substrate 28 extends upward, is bent leftward inside the convex portion 103b, is then bent upward inside the convex portion 102a, and the other end of the flexible substrate 28 is The projections 103a and 103b are connected to the upper substrate 22 via the connector 29. Accordingly, the substrates 5 and 22 are electrically connected to each other through the flexible substrate 28 that has passed through the hinge portion 104.

  One end of the heat transfer sheet 10 is bonded to the surface of the HDD 8 in a state of being separated from the lower substrate 5 from the rear surface to the left side surface and the front surface. The upper end of the heat transfer sheet 10 on the front surface of the HDD 8 is formed in an elongated shape along the shape of the flexible substrate 28, is attached to the flexible substrate 28, and passes through the hinge portion 104 together with the flexible substrate 24. The heat transfer sheet 10 that has passed through the hinge portion 104 extends leftward toward the antenna 9 in a state of being separated from the upper substrate 22, and is expanded upward in the vicinity of the antenna 9. The ends are bonded so as to cover the outer peripheral surface of the antenna 9.

  In the second embodiment, since the heat transfer sheet 10 is inserted through the hinge portion 104, heat from the HDD 8 provided in the lower main body 102 is transferred to the antenna 9 provided in the upper main body 103 via the heat transfer sheet 10. Then, heat is radiated from the tip of the antenna 9 to the outside. For this reason, even when the HDD 8 and the antenna 9 are disposed in the separate main bodies 102 and 103, the temperature rise of the HDD 8 can be suppressed, and the body 1 and the substrate 5 are prevented from becoming high temperature due to heat from the HDD 8. be able to. In addition, since the CCD 24 is disposed in the vicinity of the upper right corner of the upper main body 103, the CCD 24 is disposed at a position away from the HDD 8 and the antenna 9, so that the CCD 24 is not easily affected by the heat from the HDD 8, and good shooting is performed. It can be performed.

  In addition, the camera lens 23 can be attached not only to the mobile phone according to the second embodiment but also to the main body 100 of the mobile phone according to the first embodiment, so that a mobile phone with a camera can be obtained. In this case, for example, the antenna 9 is provided close to the left surface 100c (first surface) of the main body 100 (main body portion), the HDD 8 is provided close to the lower surface 100b (third surface) of the main body 100, and as an imaging device. The CCD 24 may be provided on the opposite side, that is, on the right surface 100d (second surface) and the upper surface 100a (fourth surface) of the main body 100. This makes the CCD 24 less susceptible to the influence of heat from the HDD 8. Note that the arrangement of the antenna 9, the HDD 8, and the CCD 24 is not limited to this as long as the CCD 24 is arranged close to the antenna 9 and the opposite side of the HDD 8.

  In the second embodiment, the upper main body 103 as the first main body portion and the lower main body 102 as the second main body portion are rotatably connected via the hinge portion 104 as the connecting portion. The configurations of the first main body portion, the second main body portion, and the connecting portion are not limited to those described above, and may be rotatable in directions other than the vertical direction. Various components housed in the first main body and the second main body are not limited to those described above. Although the CCD 24 is disposed on the side opposite to the antenna 9 of the upper main body 103, the arrangement of the antenna 9, the HDD 8, and the CCD 24 is not limited to this, and the HDD 8 and the CCD 24 may be provided in the same main body. In that case, the CCD 24 may be disposed on the opposite side of the HDD 8. In the second embodiment, wiring may be performed in the hinge portion without using the flexible substrate 28. In that case, the heat transfer sheet 10 may be formed in a cylindrical shape so as to wrap the wiring.

  In the above embodiment, the tip of the communication antenna 9 is projected from the body 1, but it may be built in the body 1. That is, a built-in antenna can be used. In this case, it is preferable that the antenna-containing portion of the body 1 has a thin shape, and the heat dissipation from the antenna to the outside is enhanced through the thin body 1. Heat is transferred from the HDD 8 to the antenna 9 via the heat transfer sheet 10 that is a sheet-like heat conductive member. However, heat is transferred from the HDD 8 to the antenna 9 via an electrical insulating material other than the heat transfer sheet 10. May be. For example, the HDD 8 and the antenna 9 may be bonded via an insulating adhesive, and heat may be transferred from the HDD 8 to the antenna 9 by heat conduction.

  In the above description, the present invention is applied to a mobile phone with a built-in HDD 8. However, the present invention is also applied to a mobile phone with a built-in disk device for storing other information, in which heat generation of this disk device becomes a problem. Can be applied as well. Further, the present invention can be applied to a mobile communication terminal other than a mobile phone (for example, a PDA having a communication function). That is, the present invention is not limited to the mobile communication terminal of the embodiment as long as the features and functions of the present invention can be realized. The above description is merely an example, and when interpreting the invention, there is no limitation or restriction on the correspondence between the items described in the embodiment and the items described in the claims.

The figure which shows the mobile telephone as a mobile communication terminal which concerns on the 1st Embodiment of this invention. The figure which shows the mobile telephone as a mobile communication terminal which concerns on the 2nd Embodiment of this invention.

Explanation of symbols

8 HDD
9 Antenna 10 Heat transfer sheet 24 CCD
DESCRIPTION OF SYMBOLS 100 Main body 100a Upper surface 100b Lower surface 100c Left surface 100d Right surface 102 Lower main body 103 Upper main body 104 Hinge part

Claims (8)

A mobile communication terminal having a communication antenna and having a built-in disk device for information storage,
A portable communication terminal comprising an electrical insulating material interposed between the disk device and the antenna so that heat from the disk device is transferred to the antenna by heat conduction. The mobile communication terminal according to claim 1,
A portable communication terminal, wherein the electrical insulating material is a sheet-like heat conducting member. The mobile communication terminal according to claim 2,
An end portion of the heat conducting member is in close contact with the antenna so as to cover an outer peripheral surface of the antenna. The mobile communication terminal according to claim 2,
An end portion of the heat conducting member is in close contact with the disk device so as to cover an outer peripheral surface of the disk device. In the portable communication terminal according to any one of claims 2 to 4,
A first main body that accommodates various components, and a second main body that accommodates various components and is rotatably coupled to the first main body via a coupling portion;
The antenna is provided in the first main body,
The disk device is built in the second main body,
The portable communication terminal, wherein the heat conducting member extends from the first main body portion to the second main body portion through the inside of the connecting portion. In the portable communication terminal according to any one of claims 1 to 4,
Furthermore, the image sensor further includes a first surface and a second surface that are parallel to each other, and a third surface and a fourth surface that are orthogonal to the first surface and the second surface and are parallel to each other. Has a body part whose outer shape is defined by
The antenna is provided closer to the first surface than the second surface, while the disk device is provided closer to the third surface than the fourth surface,
The mobile communication terminal, wherein the imaging element is provided closer to the second surface than the first surface and closer to the fourth surface than the third surface. The mobile communication terminal according to claim 5, wherein
Furthermore, it has an image sensor disposed in the first main body,
The mobile communication terminal, wherein the antenna is provided close to one end of the first main body, and the image sensor is provided close to the other end of the first main body. The mobile communication terminal according to claim 5, wherein
Furthermore, it has an image sensor disposed in the second main body,
The mobile communication terminal, wherein the disk device is provided close to one end of the second main body, and the image sensor is provided close to the other end of the second main body.

Images