Electricity: electrical systems and devices – Housing or mounting assemblies with diverse electrical... – For electronic systems and devices
Reexamination Certificate
1998-09-25
2001-11-27
Picard, Leo P. (Department: 2835)
Electricity: electrical systems and devices
Housing or mounting assemblies with diverse electrical...
For electronic systems and devices
C361S689000, C361S690000, C361S697000, C361S688000, C361S705000, C361S714000
Reexamination Certificate
active
06324055
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to mobile information processing apparatus such as notebook computer, mobile information processing apparatus cover, and desktop information processing apparatus such as desktop computer.
2. Background Arts
As a result of pursuing for a small-sized mobile information processing apparatus of recent years, much of the mobile information processing apparatus nowadays spreads heat from a surface of its main body having installed a heat-generating CPU (Central Processing Unit). However, in accordance to a progress being made on a high-speed CPU, an amount of heat generated from the CPU will also increase extensively, which leaves us with a problem of how to improve efficiency of heat spreading.
FIG. 11
illustrates a side view of conventional mobile information processing apparatus disclosed in Japanese unexamined patent publication HEI 8-261672. In the conventional mobile information processing apparatus, the amount of heat generated from the main body installing CPU is several times larger than an amount of heat released from a display unit provided with a screen display. In spite of this, outer surface areas of the main body and the display unit are approximately equal. Attending to this fact, the conventional mobile information processing apparatus has improved an efficiency of heat spreading by transferring the heat generated at the main body to the display unit, so that the transferred heat is also released from the outer surface of the display unit.
Description of the numbered components in the drawing of
FIG. 11
follows: a main body
401
of the mobile information processing apparatus where a keyboard
402
is being placed on at an inner surface of the main body
401
; a circuit board
403
installed at the main body
401
where a CPU
404
is mounted on; a heat collecting board
405
mounted on a top surface of the CPU
404
; a display unit
406
of the mobile information processing apparatus; a liquid crystal display panel
407
placed at an inner surface of the display unit
406
; a heat spreading board
408
mounted on an external surface of the display unit
406
; a connecting unit
409
that connects the main body
401
and the display unit
406
; a hinge
410
situated inside the connecting unit
409
and above the main body
401
; a first heat pipe
411
installed at the main body
401
; and a second heat pipe
412
installed at the display unit
406
. The first heat pipe
411
and the second heat pipe
412
are connected at the hinge
410
via a rotating circular plate. The circular plate rotates when the display unit
406
is being closed on top of the main body
401
.
The heat generated at the main body
401
is transferred to the display unit
406
through the first heat pipe
411
and the second heat pipe
412
. The heat pipes cause to a complexity of an internal structure of the conventional mobile information processing apparatus. In addition, the heat pipes must be incorporated from an early stage of designing. Therefore, the heat pipes have a problem such as unable to deal with a grade-up of the CPU and unable to use a PC card that has an unexpected electricity consumption.
At the same time, since a ground line and a signal line that electrically connects the main body
401
and the display unit
406
must pass through a narrow space in vicinity of the connecting unit
409
through the hinge
410
, because of this the ground line and the signal line should be made thin. The thin lines lacks in firm electronic connection and this may cause an occurrence of blur in the display panel, and further, with a repeated opening and closing of the display unit
406
the lines may be cut off.
In many cases, a cover is placed over the mobile information processing apparatus for reasons such as absorbing shock from outside, viewpoint of design, and easy carrying. Japanese unexamined utility model publication HEI 4-3126 discloses a conventional book type cover for the mobile information processing apparatus.
FIGS. 12 and 13
illustrate the book type cover for the conventional mobile information processing apparatus.
FIG. 12
is an external view of the mobile type information processing apparatus covered by the book type cover when the display unit is being closed.
FIG. 13
is the external view of the mobile information processing apparatus covered by the book type cover when the display unit is being opened.
Description of the numbered components in the drawings follows: a mobile type information processing apparatus
501
comprising a main body
502
and a display unit
503
; the book type cover for the mobile information processing apparatus
601
comprising of two parts including a part that covers the main body
502
and a part that covers the display unit
503
of the mobile information processing apparatus; straps
602
which bring together the cover
601
with the main body
502
and the display unit
503
; a handle
603
attached to the cover
601
; and shoulder strap rings
604
attached to the cover
601
.
However, this type of cover includes no means to deal with heat, so when the cover is being used to cover the mobile type information processing apparatus that spreads heat from the outer surface of the main body, the heat cannot sufficiently be released from the outer surface due to this kind of cover. This kind of cover causes a problem of increased temperature inside the main body of the mobile information processing apparatus.
SUMMARY OF THE INVENTION
The present invention attempts to solve the problems mentioned previously. The first aim of the invention is to supply a mobile information processing apparatus having an improved heat spreading efficiency, without making the configuration of the apparatus complex.
The second aim of the invention is to supply a mobile information processing apparatus with an intensified electronic connection between the main body and the display unit so that even after opening and closing the display unit for a numerous number of times, wear and tear of the ground line and the signal line that connects the main body and the display unit can be reduced.
The third aim of the invention is to supply a cover for the mobile information processing apparatus, which can improve the heat spreading efficiency.
According to one aspect of the present invention, a mobile information processing apparatus comprises: a main body including a heat generating unit; a display unit for its opening and closing; and a thermally conductive material for transferring and releasing heat generated at the heat generating unit. The thermally conductive material is flexible and is placed to the main body and the display unit.
According to another aspect of the present invention, the mobile information processing apparatus includes one part of the thermally conductive material forming an outer surface of the display unit.
According to another aspect of the present invention, the mobile information processing apparatus includes one part of the thermally conductive material forming an outer surface of the main body.
According to another aspect of the present invention, the mobile information processing apparatus includes the thermally conductive material having an outer cover at its outer surface.
According to another aspect of the present invention, the mobile information processing apparatus includes the thermally conductive material having a thermally conductive sheet having a flexible property.
According to another aspect of the present invention, the mobile information processing apparatus includes the thermally conductive material which comprises a plurality of thermally conductive sheets having a flexible property. The thermally conductive sheets are piled up in layers.
According to another aspect of the present invention, the mobile information processing apparatus includes a number of the plurality of thermally conductive sheets which can arbitrary be adjusted.
According to another aspect of the present invention, the mobile information processing apparatus includ
Burns Doane , Swecker, Mathis LLP
Mitsubishi Denki & Kabushiki Kaisha
Picard Leo P.
Vortman Anatoly
LandOfFree
Mobile information processing apparatus and covers for the... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Mobile information processing apparatus and covers for the..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Mobile information processing apparatus and covers for the... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2608742