JPH11187095A - Portable telephone set - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a portable telephone set which can be easily carried and can be easily charged at a destination of visit. SOLUTION: A charger case 2 is provided with a battery 4 for supplying current to the main body 1 of a portable telephone set, a charging circuit 5 for charging the battery 4, and a power source plug 3 to supply power from a domestic power source to the charging circuit 5. The charger case 2 is fitted to the main body 1 of the portable telephone set in a freely attachable and detachable way. In the state of attaching the charger case 2 to the main body 1 of portable telephone set, this charger case can be easily carried together with the main body 1 of the portable telephone set.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a portable telephone.

[0002]

2. Description of the Related Art As a power source of a mobile phone, a battery pack having a built-in battery and being detachable from the mobile phone has been widely used. In order to charge this battery, the battery pack must be attached. A method of placing a mobile phone on a stationary charger has been used.

[0003]

However, in the case of using such a stationary charger, when the battery is exhausted when going out, the mobile phone cannot be used until returning home, and when going out on a business trip or traveling, etc. When you do, you have to carry the charger with your mobile phone,
It was inconvenient, and it was easy to misplace or lose the charger.

The present invention has been made in view of the above points, and has as its object to provide a portable telephone which can be easily carried out when going out and can be easily charged even when going out.

[0005]

According to a first aspect of the present invention, there is provided a portable telephone comprising a battery for supplying a current to the portable telephone body, a charging circuit for supplying a current to the battery and charging the battery. A power supply plug 3 electrically connected to the charging circuit unit 5 and supplying a current from the home power supply to the charging circuit unit 5; and the charger case 2 is detachably attached to the mobile phone body 1. It is characterized by being attached.

According to a second aspect of the present invention, in addition to the configuration of the first aspect, a charger is provided such that the battery 4 is disposed on the side of the main body 1 and the charging circuit 5 is disposed on the outside. It is characterized in that the case 2 is attached to the mobile phone body 1. Further, the mobile phone according to the third aspect of the present invention supplies a current to the battery 4 to charge the battery 4, and is electrically connected to the charging circuit 5. Charger case 2 provided with power supply plug 3 for supplying current, and mobile phone main body 1
And a battery pack 10 containing a battery 4 for supplying a current to the mobile phone main body 1 in a detachable manner.

According to a fourth aspect of the present invention, in addition to the configuration of the third aspect, the charger case 2 with the charger case 2 and the battery pack 10 attached to the body 1 of the mobile phone. A heat insulating portion 11 is provided between the battery pack 10 and the battery pack 10.
Further, the mobile phone according to claim 5 of the present invention is characterized by claim 1
In addition to any one of the above configurations, the power plug 3 can be housed in the charger case 2.

A portable telephone according to a sixth aspect of the present invention is characterized in that, in addition to any one of the first to fifth aspects, the exterior of the charger case 2 is formed of a metal material. is there. In the mobile phone according to a seventh aspect of the present invention, in addition to the configuration according to any one of the first to sixth aspects, a heat sink material 24 is disposed between the charging circuit unit 5 and the exterior of the charger case 2. It is characterized by the following.

According to a portable telephone set forth in claim 8 of the present invention, in addition to the constitution of any of claims 1 to 7, a plurality of minute air holes 13 are provided on the exterior of the charger case 2. It is a feature. The mobile phone according to a ninth aspect of the present invention is characterized in that, in addition to the configuration of the eighth aspect, a nonwoven fabric 14 is attached to the inside of the exterior of the charger case 2 to close the air hole 13. Is what you do.

According to a tenth aspect of the present invention, in addition to the structure of the eighth or ninth aspect, the charger case 2 is provided.
In which the air holes 13 are provided on the exterior of the charger case 2 disposed on the side of the charging circuit unit 5 opposite to the position where the battery 4 is disposed, in a state in which is attached to the mobile phone body 1. It is.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to embodiments. FIG. 1 shows an example of the mobile phone of the present invention. As shown in FIG. 1B, a locking groove 15 is provided in the upper part of the charger case 2, and a concave part 16 is provided in the lower part. A case attachment portion 18 to which the charger case 2 is attached is formed in a recessed manner on the back surface of the mobile phone main body 1, and a hook portion 8 is directed downward at a lower portion of the case attachment portion 18. A case slide button 7 that is slidable in the up and down direction is provided above the case attachment portion 18 on the rear surface of the mobile phone main body 1. Here, a locking claw 19 is formed projecting below the case slide button 7, and when the case slide button 7 is slid downward, the locking claw 19 is The locking claw 19 protrudes from above into the case mounting portion 18 so as to fit above the case mounting portion 18 when slid upward. Then, the concave portion 16 of the charger case 2 is fitted to the hook portion 8 of the mobile phone body 1, and the case slide button 7 of the mobile phone body 1 is slid downward so that the locking claw 19 is engaged with the charger case 2. The charger case 2 is integrally attached to the case attaching portion 18 on the back surface of the mobile phone main body 1 as shown in FIG. 7 is slid upward to release the engagement between the locking claw 19 and the locking groove 15 and pull the upper portion of the charger case 2 rearward to release the engagement between the hook portion 8 and the concave portion 16. Thereby, the charger case 2 is detached from the case attaching portion 18 on the back surface of the mobile phone main body 1.

The exterior of the charger case 2 is formed of a resin, a metal material, or a composite material thereof. In this embodiment, the outer case of the charger case 2 is formed of a metal material such as aluminum. A charging circuit unit 5 formed by mounting components on a printed circuit board 6 and controlling and outputting a current for charging the battery 4 when a current from a household power source is input; Battery 4 is built-in. Here, the battery 4 is provided on the front side of the charger case 2 of the charging circuit section 5, that is, on the side of the mobile phone main body 1 in a state where the charger case 2 is attached to the mobile phone main body 1. The charging circuit unit 5 and the battery 4 are electrically connected, and the current output from the charging circuit unit 5 is supplied to the battery 4 so that the battery 4 can be charged. An output terminal electrically connected to the battery 4 is provided on the front surface of the charger case 2, and an input terminal is formed at a portion corresponding to the output terminal of the case mounting portion 18 of the mobile phone body 1. The output current from the battery 4 is supplied to the mobile phone 1 via the output terminal and the input terminal. In the charger case 2, a heat sink material 24 made of a material having high thermal conductivity is arranged and incorporated between the charging circuit unit 5 and the exterior on the back side of the charger case 2. Here, as the heat sink material, a material formed by mixing powder of alumina or aluminum nitride with silicon gel or silicon rubber can be used. For example, a product name of “Sarcon GR” manufactured by Fuji Kogaku Kogyo KK can be used. Can be.

A plug housing recess 20 is formed in the back of the charger case 2, and a power plug 3 inserted into a household power outlet is rotatably provided below the plug housing recess 20. is there. Here, when the power plug 3 is rotated upward, it is housed in the plug housing recess 20 so as not to protrude from the back of the charger case 2.
When rotated in the rear direction, it protrudes vertically from the charger case 2 and can be inserted into a household power outlet in this state. The power plug 3 is formed so as to be electrically connected to the charging circuit unit 5 when the power plug 3 is rotated in the rear direction and vertically protrudes from the charger case 2 and inserted into a household power outlet. In this case, the current supplied from the household power supply can be input to the charging circuit unit 5. Here, the power plug 3 is slidably provided in the charger case 2, is housed in the charger case 2 by sliding into the charger case 2, and slides out of the charger case 2. The power plug 3 may be provided so as to protrude vertically from the charger case 2, and in this case also, the power plug 3 can be inserted into a household power outlet while the power plug 3 protrudes vertically from the charger case 2. In this state, the charging circuit unit 5 is formed so as to be electrically connected to the charging circuit unit 5 so that a current supplied from a household power supply can be input to the charging circuit unit 5.

When charging a mobile phone using such a mobile phone, the charger case 2 is attached to the case attachment portion 18 of the mobile phone body 1 and the power plug 3 is stored in the storage recess 20. In this state, the battery pack is rotated to the rear side to vertically protrude from the rear surface of the charger case 2, and in this state, the power plug 3 is inserted into a household power outlet. In this way, a current is input from the outlet of the home power supply to the charging circuit unit 5 via the power plug 3.
The charging circuit unit 5 to which the current from the home power supply is input controls and outputs a current for charging the battery 4, and the battery 4 is charged. When charging is completed, the power plug 3 is pulled out from the outlet of the household power supply, and is turned upward to be stored in the plug storage recess 20. When a mobile phone is used, the charging is performed with the charger case 2 attached to the case mounting portion 18 of the mobile phone main body 1. At this time, the battery 4 outputs the output terminal of the charger case 2 and the mobile phone main body. A current is supplied through one input terminal.

As described above, in the portable telephone according to the present invention, the charger case 2 is detachable from the portable telephone main body 1 and is attached to the portable telephone main body 1 in an integrated manner.
The portable telephone can be easily carried and convenient, and the portable telephone can be charged by connecting the power plug 3 to a household power supply with the charger case 2 attached to the portable telephone main body 1. Even when the battery 4 of the mobile phone runs out while away from home, the mobile phone can be easily charged even if the battery charger is not separately provided from the mobile phone.

Although the charging circuit 5 generates heat during charging, when the battery 4 is heated, the deterioration is promoted. Therefore, it is necessary to prevent the heat generated from the charging circuit 5 from being conducted to the battery 4. However, in the mobile phone of the present invention, since the battery 4 is arranged on the side of the mobile phone main body 1 in the state where the charger case 2 is attached to the mobile phone main body 1 in the charging circuit section 5, the mobile phone is being charged. In this case, the heat generated from the charging circuit unit 5 can be easily released to the outside air from the opposite side of the mobile phone main body 1 without conducting the heat to the battery 4. Since the exterior is formed of a metal material such as aluminum, heat generated from the charging circuit unit 5 is easily released to the outside air through the exterior of the metal material having high thermal conductivity. Charging circuit unit 5 and the charger case 2
Since the heat sink material 24 is built in between the heat sink and the exterior, heat generated from the charging circuit portion 5 is conducted through the heat sink material 24 having high thermal conductivity and is easily released to the outside air. As a result, it is possible to suppress the heat generated from the charging circuit unit 5 from being conducted to the battery 4, and to prevent the battery 4 from being deteriorated by the heat generated from the charging circuit unit 5.

FIG. 2 shows another example of the portable telephone of the present invention. In the mobile phone shown in FIG. 2, the battery 4 is not built in the charger case 2, and an abutment piece 23 is provided on the upper portion of the front surface of the charger case 2 so as to project toward the front side. Further, the battery pack 10 containing the battery 4 is formed separately from the charger case 2, and a locking groove 17 is provided on the upper part of the battery pack 10. A case mounting portion 18 and a hook portion 8 are provided on the back surface of the mobile phone body 1 in the same manner as that shown in FIG. 1, and a battery pack mounting portion corresponding to the battery pack 10 is provided on the front side of the case mounting portion 18. The attachment portion 22 is formed to be concave. The hook 12 protrudes upward from the lower part on the back side of the battery pack attachment part 22. A battery pack slide button 9 slidable up and down is provided together with the case slide button 7 above the case attachment portion 18. A locking claw 21 is formed below the battery pack slide button 9 so as to protrude downward. When the battery pack slide button 9 is slid downward, the lock claw 21 is attached to the battery pack. The locking claw 21 protrudes from above the mounting portion 22 to the battery pack mounting portion 22, and when it is slid upward, the locking claw 21 fits above the battery pack mounting portion 22.

Then, the lower part of the back of the battery pack 10 is hooked on the front side of the hook part 12 of the battery pack attaching part 22 to be locked, and the slide button 9 for the battery pack is slid downward so that the locking claw 21 is By inserting the battery pack 10 into the locking groove 17 and locking it, the battery pack 10 is integrally mounted on the battery pack mounting portion 22 on the back of the mobile phone main body 1. The recess 16 is attached to the case attaching portion 18
And the lower part of the front surface of the charger case 2 is brought into contact with the back surface of the hook portion 12 of the battery pack attachment portion 22, and the contact piece 23 of the charger case 2 is attached to the back surface of the battery pack 10. The charger case 2 is brought into contact with the upper part, the case slide button 7 is slid downward, and the locking claw 19 is inserted into the locking groove 15 of the charger case 2 and locked, whereby the charger case 2 is connected to the mobile phone body 1 Case attachment part 1 on the back of
8 is attached integrally. Here is the charger case 2
A hook portion 12 of a battery pack attachment portion 22 is interposed at a lower portion between the battery pack 10 and the battery pack 10, and a contact piece 2 of the charger case 2 is disposed at an upper portion thereof.
3 is in contact with the upper part of the back surface of the battery pack 10 to form a gap.
1 are formed.

The case slide button 7 is slid upward to release the engagement between the locking claw 19 and the locking groove 15 of the charger case 2 and to pull the upper portion of the charger case 2 in the rear direction. Hook part 8 of case attaching part 18
The fitting of the charger case 2 to the recess 16 of the charger case 2 is released, and the charger case 2 is attached to the case attaching portion 1
8, the slide button 9 for the battery pack is further slid upward to release the engagement between the locking claw 21 and the locking groove 17 of the battery pack 10, and the upper part of the battery pack 10 By pulling in the direction, the engagement between the hook portion 12 of the battery pack attachment portion 22 and the lower rear portion of the battery pack 10 is released,
The battery pack 10 is detached from the case attaching portion 18 on the back of the mobile phone main body 1.

A charging circuit section 5 similar to that of FIG. 1 is built in the charger case 2. An output terminal electrically connected to the charging circuit unit 5 is provided on the front surface of the charger case 2, and a portion of the battery pack 10 corresponding to the output terminal is built in the battery pack 10. An input terminal electrically connected to the battery 4 is formed, and an output current from the charging circuit unit 5 is supplied to the battery pack 10 via the output terminal and the input terminal.
The battery 4 is supplied to the battery 4 inside, and the battery 4 built in the battery pack 10 is provided.
And an input terminal corresponding to the output terminal is formed in the main body 1 of the mobile phone, and the main current from the battery 4 passes through the output terminal and the input terminal. And supplied to the mobile phone body 1. In the charger case 2, a heat sink material 24 made of a material having high thermal conductivity is arranged between the charging circuit unit 5 and the outer case on the back side of the charger case 2 as in the case of FIG. Built-in. A plug housing recess 20 and a power plug 3 are provided on the back of the charger case 2 as in FIG.

When charging a mobile phone using such a mobile phone, the battery pack 10 is mounted on the battery pack mounting section 22 of the mobile phone main body 1, and then the charger case is mounted on the case mounting section 18. 2 and the power plug 3 is rotated rearward from a state in which the power plug 3 is housed in the housing recess 20 so as to vertically protrude from the back of the charger case 2. In this state, the power plug 3 is connected to a household power outlet. Is to be inserted into In this way, a current is input from the outlet of the home power supply to the charging circuit unit 5 via the power plug 3. The charging circuit unit 5 to which the current from the household power source is input controls and outputs a current for charging the battery 4, and this current is output via the output terminal of the charger case 2 and the input terminal of the battery pack 10. Then, the battery 4 is supplied to the battery 4 to be charged. When charging is completed, pull out the power plug 3 from the household power outlet,
The plug is turned upward to be stored in the plug storage recess 20. When a mobile phone is used, the charger case 2 and the battery pack 10 are attached to the mobile phone body 1, or the charger case 2 is detached and the battery pack 10 is attached to the mobile phone body 1. To do,
At this time, current is supplied from the battery 4 through the output terminal of the charger case 2 and the input terminal of the mobile phone main body 1.

In such a mobile phone, the charger case 2 and the battery pack 10 can be easily carried together with the mobile phone main body 1 in a state of being attached to the mobile phone main body 1, and are convenient. The portable telephone can be charged by connecting the power plug 3 to a household power supply with the charger case 2 and the battery pack 10 attached to the portable telephone 1. The portable telephone can be easily charged even when the battery runs out. Also, as a result of repeatedly charging and discharging the battery 4,
Is deteriorated, it is sufficient to replace only the battery pack 10 while keeping the charger case 2 as it is, which is economical. In addition, since the heat insulating portion 11 is formed by providing a gap between the charger case 2 and the battery pack 10 in a state where the charger case 2 and the battery pack 10 are attached to the mobile phone main body 1, during charging of the mobile phone In the above, the heat generated from the charging circuit unit 5 can be prevented from being conducted between the charger case 2 and the battery pack 10 and to the battery 4 by the heat insulating unit 11, and generated from the charging circuit unit 5. This can prevent the battery 4 from deteriorating due to heat.
Here, the heat insulating portion 11 can be formed by providing a heat insulating material in the gap. In this case, heat generated from the charging circuit portion 5 during charging of the mobile phone due to a heat insulating effect of the heat insulating material is obtained. The effect of preventing the conduction between the charger case 2 and the battery pack 10 and the conduction to the battery 4 by the heat insulating portion 11 is improved.

The charger case 2 shown in FIG. 3 has a charging circuit section 5 therein and a front side of the charger case 2, that is, the mobile phone body 1 in a state where the charger case 2 is attached to the mobile phone body 1. The battery 4 is built-in on the side of the charging circuit unit 5, and the exterior of the charger case 2 on the back side of the charging circuit unit 5, that is, the exterior of the charger case 2 disposed on the side opposite to the position where the battery 4 is disposed. A plurality of air holes 13 are provided. Here, a nonwoven fabric 14 that allows air to pass through but is water repellent and hard to pass through water is attached to the inside of the exterior of the charger case 2 where the air holes 13 are provided, and the air holes 13 are closed. is there. As this nonwoven fabric, "Smash" (trade name, manufactured by Asahi Kasei Spunbond Co., Ltd.), which is a polyester nonwoven fabric, and "ELTAS" (trade name, manufactured by Asahi Kasei Spunbond Co., Ltd.), which is a nylon nonwoven fabric, can be used.

This charger case 2 can be used in place of the charger case 2 shown in FIG. 1, and the charger case 2 shown in FIG. When charging the telephone, the heat generated from the charging circuit unit 5 is easily released to the outside air through the air holes 13, and as a result, conduction of heat to the battery 4 is suppressed, and the generated heat from the charging circuit unit 5 is generated. The battery 4 can be prevented from being deteriorated by the heat generated. In particular, in this case, the air hole 13 is provided as described above, and the charger case is disposed on the opposite side of the position of the battery 4 of the charging circuit unit 5 in a state where the charger case 2 is attached to the mobile phone body 1. 2, the battery 4 is not disposed between the charging circuit unit 5 and the air hole 13, and the heat generated from the charging circuit unit 5 is transferred to the battery 4 until the heat is released to the outside air through the air hole 13. The effect of preventing conduction and preventing deterioration of the battery 4 due to heat generated from the charging circuit unit 5 can be further improved. Here, the non-woven fabric 14 closing the air holes 13 allows air to pass therethrough and does not hinder the heat radiation from the air holes 13, and since the non-woven fabric 14 is water-repellent and hard to pass water, the mobile phone can be used in rainy weather or the like. When carrying the battery, water can be prevented from entering the charger case 2 through the air hole 13 by the nonwoven fabric 14, and the charging circuit unit 5 is prevented from being short-circuited or damaged by water. Is what you can do.

[0025]

As described above, the portable telephone according to the first aspect of the present invention includes a battery for supplying a current to the portable telephone main body, a charging circuit for supplying a current to the battery to charge the battery, and a charging circuit for the battery. The charger case is provided with a power plug that is electrically connected and supplies current from the home power supply to the charging circuit unit, and the charger case is detachably attached to the mobile phone body. The mobile phone can be easily carried with the main unit attached, and it is convenient.The mobile phone can be charged by connecting the power plug to a household power source with the charger case attached to the main unit. The mobile phone can be easily charged even when the battery of the mobile phone runs out while away from home.

According to a second aspect of the present invention, in addition to the configuration of the first aspect, the charger case is provided so that the battery is disposed on the side of the main body of the mobile phone and the charging circuit is disposed on the outside. Since the battery is attached to the phone body, the heat generated from the charging circuit unit during charging of the mobile phone is not conducted to the battery, and the battery case of the charging circuit unit in the state where the charger case is attached to the phone body. The battery can be easily discharged to the outside air from the opposite side, and the battery can be prevented from being deteriorated by heat generated from the charging circuit unit.

According to a third aspect of the present invention, there is provided a mobile phone, comprising: a charging circuit for supplying a current to a battery to charge the battery;
A charger case electrically connected to the charging circuit unit and provided with a power plug for supplying current from the home power supply to the charging circuit unit, and a battery pack containing a battery for supplying current to the mobile phone body. The charger case and battery pack are detachably attached to the mobile phone body, so the charger case and battery pack can be easily carried together with the mobile phone body while attached to the mobile phone body, and the charger case is attached to the mobile phone body. The mobile phone can be charged by connecting the power plug to a home power supply with the battery pack attached, and even when the battery of the mobile phone runs out while on the go, Charging can be easily performed. If the battery deteriorates as a result of repeated charge / discharge of the battery, only the battery pack needs to be replaced without changing the charger case, which is economical.

According to a fourth aspect of the present invention, in addition to the configuration of the third aspect, the charger case and the battery pack are provided when the charger case and the battery pack are attached to the body of the mobile phone. Since the heat insulating portion is provided between the battery and the battery, the heat generated from the charging circuit portion during the charging of the mobile phone can be prevented from being conducted between the charger case and the battery pack and conducted to the battery by the heat insulating portion. It is possible to prevent the battery from being deteriorated by the heat generated from the charging circuit section.

According to the portable telephone set forth in claim 5 of the present invention, in addition to the constitution according to any one of claims 1 to 4, the power supply plug can be stored in the charger case, so that the portable telephone set is charged. When not in use, the power plug is stored in the charger case so that the power plug does not get in the way, which is convenient when the mobile phone is carried with the charger case attached.

In the portable telephone according to the sixth aspect of the present invention, in addition to the constitution according to any one of the first to fifth aspects, since the exterior of the charger case is formed of a metal material, the portable telephone is charged during charging. The heat generated from the circuit section is easily released to the outside air by conducting through the exterior of the metal material with high thermal conductivity, so the conduction of heat to the battery is suppressed and the battery is deteriorated by the heat generated from the charging circuit section Can be prevented.

According to the portable telephone set forth in claim 7 of the present invention, in addition to the structure of any one of claims 1 to 6, a heat sink material is arranged between the charging circuit section and the exterior of the charger case. During charging of the mobile phone, heat generated from the charging circuit portion is conducted to the heat sink material having high thermal conductivity and is easily released to the outside air. As a result, conduction of heat to the battery is suppressed and generated from the charging circuit portion. The battery can be prevented from being deteriorated by heat.

According to the mobile phone of the present invention, in addition to the configuration of any one of the first to seventh aspects, a plurality of minute air holes are provided on the exterior of the charger case. The heat generated from the charging circuit during charging is easily released to the outside air through the air holes, thereby suppressing the conduction of heat to the battery and preventing the battery from being deteriorated by the heat generated from the charging circuit. Can be done.

In the portable telephone according to the ninth aspect of the present invention, in addition to the constitution of the eighth aspect, a non-woven fabric is stuck to the inside of the exterior of the charger case to close the air holes, so that the portable telephone can be used in rainy weather or the like. When carrying a mobile phone, etc., water can be prevented from entering the charger case through the air hole with a non-woven fabric, and the charging circuit can be prevented from being short-circuited or damaged due to water. You can do it.

According to a tenth aspect of the present invention, in addition to the constitution of the eighth or ninth aspect, the arrangement of the battery in the charging circuit portion in a state where the charger case is attached to the main body of the mobile telephone. Since the air hole was provided on the exterior of the charger case located on the opposite side from the position, the battery was not placed between the charging circuit and the air hole, and the heat generated from the charging circuit was released to the outside air through the air hole. It is possible to further improve the effect of preventing conduction to the battery until the battery is released and preventing the battery from being deteriorated by heat generated from the charging circuit unit.

[Brief description of the drawings]

FIG. 1 shows an example of an embodiment of the present invention,
(A) is a front view, (b) is a partially broken side view, and (c).
Is a rear view.

FIGS. 2A and 2B show another example of the embodiment of the present invention, in which FIG. 2A is a partially cutaway side view, and FIG. 2B is a rear view.

FIG. 3 shows still another example of the embodiment of the present invention, and is a cross-sectional view of a side surface of a charger case.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Mobile phone main body 2 Charger case 3 Power plug 4 Battery 5 Charging circuit part 10 Battery pack 11 Heat insulation part 13 Air hole 14 Nonwoven fabric

Claims (10)

[Claims] 1. A battery for supplying a current to a mobile phone body, a charging circuit for supplying a current to the battery to charge the battery, and electrically connected to the charging circuit to supply a current from a home power supply to the charging circuit. A mobile phone comprising: a charger case provided with a power supply plug to be supplied; and the charger case is detachably attached to the mobile phone body. 2. The mobile phone according to claim 1, wherein the battery case is attached to the mobile phone main body such that the battery is disposed on the mobile phone main body side and the charging circuit portion is disposed outside. . 3. A charger case provided with a charging circuit portion for supplying current to the battery to charge the battery, and a power plug electrically connected to the charging circuit portion and provided with a power plug for supplying current from the domestic power supply to the charging circuit portion. And a battery pack including a battery for supplying a current to the mobile phone body, which is detachably attached to the mobile phone body. 4. The mobile phone according to claim 3, wherein a heat insulating portion is provided between the charger case and the battery pack when the charger case and the battery pack are attached to the mobile phone body. Phone. 5. The mobile phone according to claim 1, wherein the power plug is freely housed in the charger case. 6. The mobile phone according to claim 1, wherein the exterior of the charger case is formed of a metal material. 7. A heat sink material is arranged between the charging circuit section and the exterior of the charger case.
7. The mobile phone according to any one of claims 1 to 6. 8. The mobile phone according to claim 1, wherein a plurality of minute air holes are provided on an exterior of the charger case. 9. The mobile phone according to claim 8, wherein a nonwoven fabric is adhered to the inside of the exterior of the charger case to close the air hole. 10. An air hole is provided on an exterior of a charger case disposed on a side of a charging circuit portion opposite to a position where a battery is disposed in a state where the charger case is attached to a mobile phone main body. The mobile phone according to claim 8 or 9, wherein