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Mobile Phone Patent Abstract
The purpose of the invention is to provide an improved mobile phone
with prevention of numbed hands of the user under even a cold environment.
The mobile phone includes a heating circuit. In the heating circuit,
a battery 14 has connections with leading and trailing ends of a
line 20 to be heated. The heated line 20 has connections with a
thermostat 22 and an outside-operable switch 23. The heating circuit
is disposed within the area where is between the bottom and the
leading edge of the back casing 1b of the housing in the mobile
phone.
Mobile Phone Patent Claims
What is claimed is:
1. A mobile phone comprising a housing comprised of a pair of front
and back casings, the front casing having a display device and a
plurality of keys; power source means disposed in said housing;
and a heating circuit, which comprises a line to be heated through
connection with said power source means, the heating circuit having
a thermostat and a out-operable switch which are connected therein,
the heated line being arranged between the distal and proximal portions
of the back casing, wherein said housing has separation of distal
and proximal housing parts extending from respectively, a point
substantially intermediate thereof to respective distal and proximal
ends of the mobile phone, a point between the trailing end of said
distal housing part and the leading end of said proximal housing
part has connecting means for connecting said distal housing part
pivotable thereabout to said proximal housing part pivotable thereabout
so that said housing has fold thereabout, a part of said heating
circuit has a meandrous arrangement which is at the back casing
of said proximal housing, and each of said thermostat and out-operable
switch of said heating circuit is at the back casing of said distal
housing part.
2. The mobile phone in claim 1, wherein the back casing comprises
aluminum alloy.
3. The mobile phone in claim 1, wherein said connecting means is
hinge means that it connects said distal and proximal housing parts
pivotable thereabout, and is provided at the opposite ends of respective
distal and proximal housing parts to each other, the heated line
on the side of said distal housing part having connection with the
heating line on the side of said proximal housing through at least
one conductive element at said hinge means.
4. A mobile phone comprising a housing comprised of a pair of front
and back casings, the front casing having a display device and a
plurality of keys; power source means disposed in said housing;
and a heating circuit, which comprises a line to be heated through
connection with said power source means, the heating circuit having
a thermostat and an out-operable switch which are connected therein,
the heating circuit being arranged between the distal and proximal
portions of the back casing, wherein said housing has separation
of distal and proximal housing parts extending from respectively,
a point substantially intermediate thereof to respective distal
and proximal ends of the mobile phone so that it can fold, and wherein
the distal and proximal housing parts couple with each other through
hinge means at the point substantially intermediate of the mobile
phone that it is unfolded, the hinge means being opposedly provided
on each of the distal and proximal housing at respective trailing
and leading ends thereof, said heated line on the side of said distal
housing part having connection with said heated line on the side
of said proximal housing part through at least one conductive element
provided at the position of the said hinge means.
5. The mobile phone in claim 4, wherein a part of the heated line
in said heating circuit has a meandrous arrangement.
6. The mobile phone in claim 5, wherein the back casing comprises
aluminum alloy.
7. The mobile phone in claim 5, wherein the heated line of said
heating circuit has a partial meandrous arrangement, and wherein
the back casing comprises aluminum alloy.
Mobile Phone Patent Description
FIELD OF THE INVENTION
The present invention relates to a mobile phone having a measure
to cold regions, and in detail relates to a mobile phone having
a heat function of preventing a numbed hand of the user and deterioration
in the electronic functions.
BACKGROUND OF THE INVENTION
The mobile phone can conveniently operate anywhere in the indoor
such as an inner automobile or an underground passage, and the outdoor
such as a baseball stadium or a field, within the reach of the electric
wave. The display at the upper portion of the mobile phone gives
the user various information. The user operates the mobile phone
with push buttons at the lower body.
The mobile phone desires to provide possible communication between
the calling and called parties under any environment. However, when
the mobile phone is in the cold, the cold numbs the user's hand
or causes bluredness of the display thereof and deterioration in
the electronic circuit. Particularly, not only such the mobile phone
but also other outdoor apparatuses often bother the user with the
problems.
As an example of the prior arts, which disclose conventional apparatuses
having improvement in solutions of the problems by a heat, JP 10-333766A
teaches a handy information terminal apparatus that it is contained
in a heat container having a complex heat comprised of a heater,
and a heat pipe from the heater, about a battery and a display.
SUMMARY OF THE INVENTION
The present invention provides solution of the foregoing problems,
wherein an improved mobile phone has a heat circuit which connects
with its battery. The heat circuit includes a heating member, a
thermostat, and a switch that it may operate outside. The heating
member is at the position where is within the side height from the
bottom of the inner back casing.
Preferably, the heating member of the heat circuit has a meandrous
arrangement of a line on the bottom surface of the back casing.
The back casing comprises heat-conductive material such as aluminum
alloy.
BRIEF DESCRIPTION OF THE INVENTION
FIG. 1 is an disassembled oblique view of the first type of mobile
phone having a heat circuit;
FIG. 2 is a schematic circuit diagram of the heat circuit; and
FIG. 3 is a constructional view of the second type of mobile phone
having the heat circuit
PREFERRED EMBODIMENT OF THE INVENTION
The style of generally known mobile phones are classified in general
into two groups. FIGS. 1 and 3 are mobile phones having a single
housing with a display and a plurality of number or symbol keys,
and a folding body in which its display is disposed on the leading
housing and its number or symbol keys are arranged on the trailing
housing, respectively.
Referring to FIG. 1, a disassembled single housing type mobile
phone is shown. The mobile phone has an oblong rectangular body
1 with a hollow shape. The body 1 comprises front and back casings
1a and 1b, which are each assembled thereinto. The side walls of
the casings 1a and 1b have a partial engagement with respective
corresponding ribs 2 to each other.
The front casing has a display screen 3, and an opening 4 for the
phone's speaker, which are at its leading portion, and a plurality
of number or symbol keys 5 and an opening 6 for the phone's microphone,
which are at its trailing portion.
Location of the number or symbol keys 5 are on respective switch
elements 7 of a switch board 8 disposed in the interior body 1 so
that the pushed keys cause drive of respective switch elements 7.
Such the mobile phone has a construction, which provides a speaker
9, a display 10, a microphone 11, and an electric circuit 12 for
a single print circuit board 13 under the switch board 8. The speaker
and microphone, and the display are disposed at respective leading
and trailing portions of the print circuit 13 such that the formers
are at the position of respective openings 4 and 6 on the front
casing 1a at respective leading and trailing portions thereof, and
the latter is at the position of the screen portion 3 on the front
casing 1a at the leading portion thereof. Under the print circuit
board 13 in the interior body 1, a battery 14 is disposed. From
the top body 1, an antenna 15 is mounted.
The back casing 1b has a heater 20, which is a heating circuit
disposed within the height of the internal side surfaces or the
depth of the bottom. The heating circuit includes a line, two terminals
21 which connect to the battery 14 in the line at the leading and
trailing ends thereof, and a thermostat 22 and a switch 23 which
connect into the line, as shown in FIG. 2.
The liner member of the heating circuit has a meandrous arrangement
as shown in FIG. 1. Preferably, it is formed in a flat and made
of, for example, chromium material having heating properties. The
formation of the line is a process such as printing.
In other ways than the foregoing, the heating circuit may be that
a laminate material such as silicon rubber of synthetic resin or
glass has a meandrous line pattern formed thereon. In addition,
the pattern is not limited to a meandrous pattern.
Conventionally, the mobile phone body was made of synthetic plastics
such as FRP (fluorocarbon resin polymers). However, in the instant
application, only the back casing is made of aluminum alloy with
high thermal conductivity.
Referring to FIG. 3, a folding type mobile phone, which is provided
with the heating circuit, is shown. The phone has a foldable body,
which comprises a distal casing 31 with a display screen 30, and
a proximal casing 33 with a plurality of an arranged number or symbol
keys 32. The distal casing 31 connects to the proximal casing 33
thorough the hinge mechanism. 34.
The hinge mechanism 34 comprises a C-shaped sectional connector
portions 36 and 37 protruding from respective trailing and leading
ends of the distal and proximal casings 31 and 33, each of the connector
portions rotatably fitting on an outer circumferential surface of
a hollow cylindrical member 35, both ends of the cylindrical member
each having a terminal member provided thereto.
The heating circuit of such the mobile phone with the folding body
also has a meandrous line 20, terminals 21, a thermostat 22, and
a switch 23, and is inside of the folding body. In the folding body,
the line passes between the distal and proximal back casings 31
and 33, and the meandrous arrangement is mainly at the trailing
portion of the proximal back casing.
The establishment of the connected upper and lower lines of the
heating circuit is provisions of conductive elements 36' and 37'
at the hinge mechanism 34 that they are on, respectively, either
one of the right and left sides of the C-shaped sectional connector
parts 36 and 37 to connect to each other.
The conductive elements 36' and 37' at the hinge mechanism 34 have
connections to the upper and lower lines of the heating circuit,
respectively. The conductive elements 36' and 37' connect to the
leading and trailing ends of respective lines on the side of distal
and proximal back casings.
Connection between the upper and lower lines is not limited to
the foregoing. It may make change in the design dependent on shaped
mobile phones with separate casings.
Description will now be made in further detail of the heating circuit
that it acts in both of the mobile phones as shown in FIGS. 1 and
3.
The heating circuit operates, when one of the keys 5 or at least
one special key actuates the switch to on. Current flows from the
battery 14 to heat the heating circuit. The aluminum back casing
1b of the body 1 or the aluminum distal and proximal back casings
31 and 33 heats up with the thermal energy generated from the heating
circuit.
Generally, the display screen of the mobile phone, which displays
information with liquid crystal, is liable to disorder at the high
temperature in excess of 40.degree. C. In the instant application,
when the heated back casing exceeds a temperature of 40.degree.
C., the thermostat 22 provides automatic interruption of the current
flowing into the heating circuit. This permits keeping of non-exceeding
40.degree. C. temperature inside of the mobile phone's body.
Referring to FIG. 1, the meandrous arrangement of the heating circuit
is within the whole area of the back casing bottom of the single
body type mobile phone. Such the heating circuit allows for averaged
heating of the back casing 1b.
Whereas, the heating circuit in FIG. 3 is of a partial arrangement
that it is only on the side of the proximal back casing 33. This
is because the display screen of the folding type mobile phone is
disposed within the interior area smaller than that of FIG. 1. Additionally,
in the folding type mobile phone, both the battery 14 and switch
of the heating circuit are about its display 30 inside of the upper
casing. Since the meandrous arranged heating circuit within the
small area causes generation of higher thermal energy, the display
will experience collective heat.
Furthermore, as shown in FIGS. 1 and 3, the body with only the
aluminum back casing also eliminates the collective heat to the
display. The back casing(s), which are made of aluminum alloy and
get heat, have no cold temperature under even a cold environment.
This eliminates a blured display under even a cold environment and
deterioration in the electronic functions. In addition, it eliminates
a numbed hand of the user under even a cold environment.
As be clarified above, the assemblage of the heater into the mobile
phone only requires a circuit board or substrate on which a meandrous
line or a partial meandrous line to be heated is arranged, and provision
of such the circuit board or substrate at the time when the body
does not have the assembled display and keys. Therefore, the heater
according to the instant invention does not make the mobile phone
complicated constructions.
As be additionally described above, the heating circuit may be
surface heat generator (silicon rubber heater) in place of the meandrous
line that is formed on the print circuit board. |