JP2006140236A - Enclosure structure for portable information processing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an enclosure structure for a portable information processing device, such as portable telephone terminal etc., using a gaseous buffering material as a shock-buffering material used around liquid crystal panel which is weak against shocks or electrical components on substrate so as to reduce the weight and economize the resource of the portable telephone terminal, etc. <P>SOLUTION: In the enclosure structure for the portable information processing device, the gas buffering material enclosing a gas as the shock buffering material is used in the portable information processing device that includes a portable terminal. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a housing structure of a mobile information terminal device such as a mobile phone, a mobile phone terminal device such as a PHS (Personal Handy-phone System) or a PDA or a notebook personal computer.

Conventionally, portable information processing devices such as mobile phone terminals have been required to be lighter and smaller, and various measures have been taken to meet these requirements, and this direction will not change in the future. It is done.
In general, when a mobile phone terminal is reduced in weight, the rigidity is often reduced by reducing the amount of material used for the housing or using a light material, which is often disadvantageous for dropping or impact.
For example, in Patent Document 1, as shown in FIG. 2 and the like, the liquid crystal panel 28 is connected to the housing via a transparent elastic resin.
On the other hand, it is necessary to consider the contribution to environmental problems of striving to save resources and reduce the amount of carbon dioxide generated during production.
For example, FIG. 1, FIG. 3, and FIGS. 4 to 6 of Patent Document 2 disclose an invention of a liquid crystal display device provided with a liquid crystal display including a transparent touch panel.
Japanese Patent Laid-Open No. 11-174417 JP 2002-259052 A

However, this idea is not taught at all to the mobile phone terminal or the like.
The present invention relates to a housing structure of a portable information processing apparatus such as a mobile phone terminal that uses a gas cushioning material as an impact cushioning material that has been conventionally used around a liquid crystal panel portion that is vulnerable to impacts or electrical components on a substrate. In addition, the present invention proposes to reduce the weight and resources of such mobile phone terminals.
With respect to the cushioning material used inside the mobile phone terminal, instead of using a cushioning material such as urethane foam that has been used in the past, by using a gas cushioning material filled with gas, without deteriorating the impact absorption effect, Lightening and resource saving of the mobile phone terminal can be realized.

  In order to solve the above-mentioned problem, the invention of the casing structure of the portable information processing device according to claim 1 is a gas cushioning material in which a gas is sealed as an impact cushioning material in a portable information processing device including a portable terminal. It is characterized by using.

  The invention according to claim 2 is characterized in that, in claim 1, the gas buffer material seals a gas lighter than air.

  According to a third aspect of the present invention, in the first or second aspect, the gas cushioning material diffuses the heat generated inside the casing of the portable information processing device by being brought into contact with an electrical component. .

  According to a fourth aspect of the present invention, in the third aspect, the base material for sealing the gas is generated inside the casing of the portable information processing device using a material having high thermal conductivity. It is characterized by diffusing heat.

  The invention described in claim 5 is characterized in that, in any one of claims 1 to 4, a gas having high thermal conductivity is used as the gas.

  According to a sixth aspect of the present invention, in any one of the first to fifth aspects, the portable information device is a cellular phone terminal or a personal handy-phone system (PHS) terminal.

The gas buffer material used inside a portable information processing device such as a cellular phone terminal can reduce the weight of the cellular phone terminal.
The gas buffer material used in a portable information processing apparatus such as a cellular phone terminal can save resources and reduce the amount of carbon dioxide generated during the manufacturing process.

[First Embodiment]
1 and 2 are schematic views of the mobile phone terminal of the present invention.
FIG. 1 is a schematic diagram of a liquid crystal panel portion of a mobile phone terminal. Inside a liquid crystal panel portion housing 1, a front side liquid crystal panel 2, a rear side liquid crystal panel 3, and the front side liquid crystal panel 2 and the rear side liquid crystal panel 3 are shown. There is a frame 4 for fixing. The gas buffer material 5 is installed between the front liquid crystal panel 2 and the rear liquid crystal panel 3 and the liquid crystal panel section housing 6. FIG. 2 is a schematic diagram of the substrate unit 7 of the cellular phone terminal. In the substrate unit housing 9, there are a substrate 7 on which an electrical component 8 is mounted and a frame 10 for fixing the substrate. It is installed between the upper electrical component 8 and the substrate section housing 9.

Description of Operation of First Embodiment Conventionally used urethane foam has a density of about 500 kg per cubic meter. On the other hand, the gas cushioning material used in the mobile phone device of the present invention occupies most of the cushioning material volume, and the density of this cushioning material is about 1.2 kg per cubic meter or less, and the mass of the same volume. Thus, it is about 1/400. Furthermore, if the gas of the gas buffer is made lighter than air such as helium, the density of helium is about 0.17 kg per cubic meter, so the mass is about 1/3000. In addition, regarding the amount of material used, the gas buffer material is only the mass of a material (generally polystyrene or PET: polyethylene terephthalate) in which gas is sealed, and the weight is reliably reduced. For example, if the conventional buffer material usage amount is 2 g, the gas buffer material is about 0.4 g. If this gas buffer material is used, the amount of carbon dioxide generated due to resource saving is also low. In contrast to 6.6 g of the buffer material, the gas buffer material is about 1.3 g, which can be reduced to about one fifth of the conventional product. PET, PEN (polyethylene naphthalate) or a copolymer of these ethylene terephthalates and ethylene naphthalates can be used.

  These resins are excellent in gas barrier (gas permeability) properties, and a resin that hardly leaks gas therein can be used. Moreover, since the base material of these buffer materials used for this invention is rich in gas barrier property, since it has an aromatic ring, it is excellent also in thermal conductivity. And it is preferable to seal the gas which is lighter than air in such a base material. As such a gas, one selected from nitrogen, helium, hydrogen, neon, etc., or a mixture of these gases can be used.

[Second Embodiment]
Next, a second embodiment of the mobile phone terminal of the present invention will be described.
By using a material with high thermal conductivity for the material that encloses the gas buffer material, the gas buffer material in contact with the electrical component can efficiently diffuse the heat generated from the electrical component, Temperature rise can be prevented.

  In particular, it is preferable to use a mixed gas containing helium or helium alone because the thermal conductivity can be freely controlled. In addition, the surface of the substrate is treated by corona discharge or the like to control the amount of OH groups on the surface, or after the treatment or by independently treating the metalizing treatment, the thermal conductivity, dielectric The rate can be controlled freely. The gas barrier property can be further improved by this metallizing treatment. The gas is particularly good if a gas that is lighter than air is used, and the density is made lighter than air as a whole.

Specifically, when helium is used, it is preferable that the density of the gas confined in the base material is lighter than air as a whole, so a gas heavier than air (for example, a gas such as carbon dioxide) is mixed. Can also be used.
In particular, the gas buffer material manufactured by surface-treating the surface of the base material has excellent adhesion because the surface has an OH group or the like. Such a gas buffer material includes a casing, a liquid crystal panel, and the like. It is also possible to prevent the fixing frame electrical component (or electronic component) or the like from being fixed or moved by adhesion via an adhesive or an adhesive. For example, when the viscosity of the adhesive is adjusted appropriately Further, it is possible to design so as to increase the buffer property due to the viscoelasticity and the like.

  Further, in the first embodiment or the second embodiment, a material having a high heat sink property such as silicon grease is attached to the surface of the base material or is applied using a solvent (dispersant). Thus, it is possible to perform a process for increasing the thermal conductivity.

  The housing structure of the present invention can be used for mobile phone terminals such as mobile phones and PHS (Personal Handy-phone System), and portable information processing devices such as PDAs and notebook computers. By using the cushioning material, it is possible to further increase the information processing capability.

It is a schematic sectional drawing of the display part housing | casing of portable information processing apparatuses, such as a mobile telephone terminal of this invention. It is a schematic sectional drawing of the board | substrate part of portable information processing apparatuses, such as a mobile telephone terminal of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Liquid crystal panel housing | casing 2 Front side liquid crystal panel 3 Back side liquid crystal panel 4 Frame for liquid crystal panel fixation 5 Gas buffer material 7 Board | substrate 8 Electrical component (electronic component)
9 Board housing 10 Board fixing frame

Claims (6)

  A casing structure of a portable information processing apparatus, wherein a gas buffer material in which a gas is sealed as an impact buffer material is used inside a portable information processing apparatus including a portable terminal.   The casing structure of the portable information processing apparatus according to claim 1, wherein the gas buffer material seals a gas lighter than air.   The casing structure of the portable information processing apparatus according to claim 1, wherein the gas buffer material diffuses heat generated in the casing of the portable information processing apparatus by contacting with an electric component.   The base material for sealing the gas uses a material having high thermal conductivity to diffuse the heat generated inside the casing of the portable information processing device. Case structure of portable information processing apparatus.   The case structure of the portable information processing apparatus according to any one of claims 1 to 4, wherein the gas is a gas having high thermal conductivity.   6. The casing structure of the portable information processing apparatus according to claim 1, wherein the portable information device is a cellular phone terminal or a personal handy-phone system (PHS) terminal.

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