上記のように本体ケースの内部にヒートシンクが設けられている美容器具の場合には、肌ヘッドで肌面に冷熱刺激を与える場合に、ペルチェ素子の発熱面側に接続されたヒートシンクから温熱が放出されるため、本体ケースの内部温度が高くなりやすい。さらに、２次電池を充電する場合には充電制御ＩＣ自身が発熱して、例えば５０℃まで温度が上昇する。そのため、２次電池を繰返し充電することにより、充電制御ＩＣが劣化して当該充電制御ＩＣが短命化するうえ、２次電池の充電効率や電池寿命にも悪影響を及ぼす。因みに、従来は充電制御ＩＣの放熱面に銅板を接合し、充電制御ＩＣの熱を銅板から放出することにより温度上昇を抑止していたが、銅板で放出できる総熱量が小さいため、充電制御ＩＣの短命化を防ぐことはできなかった。
In the case of a beauty device in which a heat sink is provided inside the main body case as described above, when heat is applied to the skin surface by the skin head, heat is released from the heat sink connected to the heat generating surface side of the Peltier element. Therefore, the internal temperature of the main body case easily rises. Further, when the secondary battery is charged, the charge control IC itself generates heat, and the temperature rises to 50° C., for example. Therefore, repetitive charging of the secondary battery deteriorates the charge control IC, shortens the life of the charge control IC, and adversely affects the charging efficiency and the battery life of the secondary battery. Incidentally, in the past, a copper plate was joined to the heat dissipation surface of the charge control IC to suppress the temperature rise by radiating the heat of the charge control IC from the copper plate, but since the total amount of heat that can be released by the copper plate is small, the charge control IC It was not possible to prevent the shortevity of the.
本発明は、小型電気機器において、２次電池を充電する際の電池充電ＩＣの熱を効果的に逃がすことにより、電池充電ＩＣの機能が劣化することを抑えて、２次電池の充電効率が良好な状態をより長期に亘って維持できるようにすることを目的とする。
INDUSTRIAL APPLICABILITY The present invention suppresses deterioration of the function of the battery charging IC by effectively dissipating heat of the battery charging IC when charging the secondary battery in a small electric device, thereby improving the charging efficiency of the secondary battery. The purpose is to be able to maintain a good condition for a longer period of time.
本発明に係る小型電気機器は、本体ケース１の内部に電源用の２次電池５と、制御基板６とが配置されており、本体ケース１のヘッド部２に、熱電変換素子８と、熱電変換素子８の前面に接合される刺激付与体３と、熱電変換素子８の後面に接合されるヒートシンク９とが配置されている。制御基板６には、２次電池５に充電電流を供給する充電回路３２が実装されている。充電回路３２は電池充電ＩＣ３３を含む。電池充電ＩＣ３３はヒートシンク９に対して熱移動可能に接続されており、２次電池５の充電時に生じた電池充電ＩＣ３３の熱が、ヒートシンク９を介して放熱されるように構成されていることを特徴とする。
In the small-sized electric device according to the present invention, a secondary battery 5 for power supply and a control board 6 are arranged inside a main body case 1, and a thermoelectric conversion element 8 and a thermoelectric conversion element 8 are provided in a head portion 2 of the main body case 1. The stimulus imparting body 3 joined to the front surface of the conversion element 8 and the heat sink 9 joined to the rear surface of the thermoelectric conversion element 8 are arranged. A charging circuit 32 that supplies a charging current to the secondary battery 5 is mounted on the control board 6. The charging circuit 32 includes a battery charging IC 33. The battery charging IC 33 is movably connected to the heat sink 9, and the heat of the battery charging IC 33 generated when the secondary battery 5 is charged is radiated through the heat sink 9. It is a feature.
図１に示すようにヒートシンク９は、放熱部４４と、放熱部４４から制御基板６に向かって延出される受熱部４５と、放熱部４４と受熱部４５の間に設けられる熱遮断部５７とを備えている。受熱部４５に電池充電ＩＣ３３が接合されている。熱遮断部５７に、放熱部４４の熱が受熱部４５へ伝導するのを規制する熱遮断構造が設けられている。
As shown in FIG. 1, the heat sink 9 includes a heat radiating portion 44, a heat receiving portion 45 extending from the heat radiating portion 44 toward the control board 6, and a heat shield portion 57 provided between the heat radiating portion 44 and the heat receiving portion 45. Is equipped with. The battery charging IC 33 is joined to the heat receiving portion 45. The heat blocking unit 57 is provided with a heat blocking structure that restricts the heat of the heat radiating unit 44 from being conducted to the heat receiving unit 45.
熱遮断構造は、熱遮断部５７に形成した複数の熱遮断穴５８で構成されている（図５参照）。
The heat shield structure is composed of a plurality of heat shield holes 58 formed in the heat shield portion 57 (see FIG. 5).
ヒートシンク９の受熱部４５と正対する制御基板６の充電用実装領域Ｒに電池充電ＩＣ３３が実装されている。充電用実装領域Ｒに挿通した締結体５４を受熱部４５に固定して、受熱部４５に電池充電ＩＣ３３が密着されている（図６、図７参照）。
The battery charging IC 33 is mounted in the charging mounting region R of the control board 6 that faces the heat receiving portion 45 of the heat sink 9. The fastening body 54 inserted into the charging mounting area R is fixed to the heat receiving portion 45, and the battery charging IC 33 is in close contact with the heat receiving portion 45 (see FIGS. 6 and 7).
図７に示すように、締結体５４は金属製のねじで形成されて、電池充電ＩＣ３３の周囲複数個所において充電用実装領域Ｒが受熱部４５に締結固定されている。
As shown in FIG. 7, the fastening body 54 is formed of a metal screw, and the charging mounting regions R are fastened and fixed to the heat receiving portion 45 at a plurality of locations around the battery charging IC 33.
ヒートシンク９の受熱部４５の端部に、制御基板６の充電用実装領域Ｒと、同領域Ｒに実装した電池充電ＩＣ３３を収容する受熱凹部７７とが形成されており、受熱凹部７７の内面に電池充電ＩＣ３３および充電用実装領域Ｒが密着されている（図８参照）。
At the end of the heat receiving portion 45 of the heat sink 9, a charging mounting region R of the control board 6 and a heat receiving recess 77 for accommodating the battery charging IC 33 mounted in the region R are formed, and an inner surface of the heat receiving recess 77 is formed. The battery charging IC 33 and the charging mounting region R are in close contact with each other (see FIG. 8).
本体ケース１の一端にヘッド部２が設けられ、本体ケース１の他端側の内部に２次電池５が配置されている。本体ケース１の他端には、充電回路３２に充電用電流を供給する電力供給部７が設けられている。図９に示すように、ヒートシンク９の受熱部４５と、制御基板６の充電用実装領域Ｒが、本体ケース１の他端寄りまで連出されて、充電用実装領域Ｒに実装した電池充電ＩＣ３３が受熱部４５に接合されている。
A head portion 2 is provided at one end of the main body case 1, and a secondary battery 5 is arranged inside the other end side of the main body case 1. At the other end of the main body case 1, a power supply unit 7 that supplies a charging current to the charging circuit 32 is provided. As shown in FIG. 9, the heat receiving portion 45 of the heat sink 9 and the charging mounting region R of the control board 6 are extended to the other end of the main body case 1 and are mounted in the charging mounting region R. Are joined to the heat receiving portion 45.
ヒートシンク９の受熱部４５と制御基板６の充電用実装領域Ｒが、２次電池５の他端側の端部を越えて本体ケース１の他端寄りに配置されて、充電用実装領域Ｒに実装した電池充電ＩＣ３３が受熱部４５に接合されている（図９参照）。
The heat receiving portion 45 of the heat sink 9 and the charging mounting area R of the control board 6 are arranged near the other end of the main body case 1 beyond the end portion on the other end side of the secondary battery 5, and are placed in the charging mounting area R. The mounted battery charging IC 33 is joined to the heat receiving portion 45 (see FIG. 9).
本体ケース１の他端寄りに位置する制御基板６にスリット状の切欠７９が形成されて、制御基板６の厚み方向へ弾性変形可能な充電用実装領域Ｒが切欠７９に沿って形成されている（図１１、図１３参照）。充電用実装領域Ｒに電池充電ＩＣ３３が配置されている。電池充電ＩＣ３３が充電用実装領域Ｒの基板の弾性力で、ヒートシンク９の受熱部４５に密着付勢されている。
A slit-shaped cutout 79 is formed in the control board 6 located near the other end of the main body case 1, and a charging mounting region R that is elastically deformable in the thickness direction of the control board 6 is formed along the cutout 79. (See FIGS. 11 and 13). The battery charging IC 33 is arranged in the mounting area R for charging. The battery charging IC 33 is urged in close contact with the heat receiving portion 45 of the heat sink 9 by the elastic force of the substrate in the charging mounting region R.
電池充電ＩＣ３３とヒートシンク９の受熱部４５とは、受熱部４５の前後厚みより薄い伝熱具８０を介して接続されている（図１５参照）。
The battery charging IC 33 and the heat receiving portion 45 of the heat sink 9 are connected via a heat transfer tool 80 that is thinner than the front and rear thickness of the heat receiving portion 45 (see FIG. 15 ).
本発明の小型電気機器では、制御基板６に実装した電池充電ＩＣ３３をヒートシンク９に接続して、２次電池５の充電時に生じた電池充電ＩＣ３３の熱を、ヒートシンク９を介して放熱できるようにした。こうした小型電気機器によれば、２次電池５を充電する際に避けられない電池充電ＩＣ３３の熱を、ヒートシンク９側へ効果的に逃がすことができる。従って、小型電気機器の使用期間が長期にわたり、その間に２次電池５が繰返し充電される場合であっても、電池充電ＩＣ３３が高温になることにより電池充電ＩＣ３３の性能が低下すること、すなわち電池充電ＩＣ３３の機能劣化が進むことを抑えて、電池充電ＩＣ３３の制御機能をより長期にわたって正常な状態に維持することができる。また、２次電池５の充電効率が良好な状態をより長期にわたって維持することができる。
In the small electric device of the present invention, the battery charging IC 33 mounted on the control board 6 is connected to the heat sink 9 so that the heat of the battery charging IC 33 generated when the secondary battery 5 is charged can be radiated through the heat sink 9. did. According to such a small electric device, the heat of the battery charging IC 33 that cannot be avoided when charging the secondary battery 5 can be effectively released to the heat sink 9 side. Therefore, even if the small electric device is used for a long period of time and the secondary battery 5 is repeatedly charged during that period, the temperature of the battery charging IC 33 becomes high and the performance of the battery charging IC 33 deteriorates. It is possible to suppress the deterioration of the function of the charging IC 33 and to maintain the control function of the battery charging IC 33 in a normal state for a longer period. Further, the state where the charging efficiency of the secondary battery 5 is good can be maintained for a longer period of time.
ヒートシンク９は、放熱部４４と、放熱部４４から制御基板６に向かって延出される受熱部４５と、放熱部４４と受熱部４５の間に設けられる熱遮断部５７を備えるようにした。また、受熱部４５に電池充電ＩＣ３３を接合し、熱遮断部５７に熱遮断構造を設けて、放熱部４４の熱が受熱部４５へ伝導するのを熱遮断構造で規制できるようにした。こうした接合構造によれば、ヒートシンク９に伝導された温熱が、受熱部４５を介して電池充電ＩＣ３３へ伝わろうとするのを、熱遮断部５７の熱遮断構造で規制できるので、小型電気機器の通常の使用形態において、電池充電ＩＣ３３が高温になりその機能が劣化することを防止できる。従って、小型電気機器の使用期間が長期にわたり、その間に２次電池５が繰返し充電される場合であっても、電池充電ＩＣ３３が高温になりその機能が劣化することをさらに確実に防止できる。
The heat sink 9 is provided with a heat radiating portion 44, a heat receiving portion 45 extending from the heat radiating portion 44 toward the control board 6, and a heat blocking portion 57 provided between the heat radiating portion 44 and the heat receiving portion 45. Further, the battery charging IC 33 is joined to the heat receiving part 45, and the heat blocking part 57 is provided with the heat blocking structure so that the heat of the heat radiating part 44 can be restricted from being conducted to the heat receiving part 45 by the heat blocking structure. According to such a joint structure, it is possible to restrict the heat conducted to the heat sink 9 from being transferred to the battery charging IC 33 via the heat receiving part 45 by the heat blocking structure of the heat blocking part 57. It is possible to prevent the battery charging IC 33 from being heated to a high temperature and deteriorating in its function in the usage pattern of. Therefore, even when the small electric device is used for a long period of time and the secondary battery 5 is repeatedly charged during that period, it is possible to more reliably prevent the battery charging IC 33 from becoming hot and deteriorating its function.
熱遮断構造が熱遮断穴５８で構成されていると、熱遮断部５７における伝熱断面積を減少させることができるので、その分だけ放熱部４４から受熱部４５へ伝導される熱量を減少させて、電池充電ＩＣ３３の温度が上昇することを防止できる。また、熱遮断穴５８を介して空気を循環させることができるので、熱遮断部５７における放熱作用を向上させることができ、この点でも放熱部４４から受熱部４５へ伝導される熱量を減少させることができる。
If the heat shield structure is configured by the heat shield holes 58, the heat transfer cross-sectional area in the heat shield portion 57 can be reduced, so that the amount of heat conducted from the heat radiating portion 44 to the heat receiving portion 45 can be reduced accordingly. Thus, it is possible to prevent the temperature of the battery charging IC 33 from rising. Further, since the air can be circulated through the heat shield holes 58, the heat dissipation function of the heat shield parts 57 can be improved, and in this respect as well, the amount of heat conducted from the heat dissipation parts 44 to the heat receiving parts 45 can be reduced. be able to.
受熱部４５と正対する制御基板６の充電用実装領域Ｒに電池充電ＩＣ３３を実装し、充電用実装領域Ｒに挿通した締結体５４を受熱部４５に固定して、電池充電ＩＣ３３を受熱部４５に密着させるようにした。こうした接合構造によれば、充電用実装領域Ｒと受熱部４５を締結体５４で締結固定するだけの簡単な構造を付加するだけで、電池充電ＩＣ３３と受熱部４５の密着度合いを高めて、電池充電ＩＣ３３の熱をさらに効果的に受熱部４５へ伝導することができる。
The battery charging IC 33 is mounted in the charging mounting area R of the control board 6 facing the heat receiving section 45, the fastening body 54 inserted in the charging mounting area R is fixed to the heat receiving section 45, and the battery charging IC 33 is fixed to the heat receiving section 45. It was made to adhere to. According to such a joining structure, the degree of close contact between the battery charging IC 33 and the heat receiving portion 45 can be increased by simply adding a simple structure in which the charging mounting region R and the heat receiving portion 45 are fastened and fixed by the fastening body 54. The heat of the charging IC 33 can be more effectively conducted to the heat receiving portion 45.
電池充電ＩＣ３３の周囲複数個所において、金属製のねじからなる締結体５４で、充電用実装領域Ｒを受熱部４５に締結固定するようにした。こうした接合構造によれば、電池充電ＩＣ３３から受熱部４５への直接的な熱伝導に加えて、電池充電ＩＣ３３の周囲の基板面の熱を締結体５４で受熱部４５に伝導できるので、電池充電ＩＣ３３から受熱部４５へ伝導される総熱量を増加できる。従って、電池充電ＩＣ３３が高温に晒されるのをさらに確実に解消して、充電回路３２の制御機能を長期にわたって正常な状態に維持できる。
At a plurality of locations around the battery charging IC 33, the charging mounting region R is fastened and fixed to the heat receiving portion 45 by the fastening bodies 54 made of metal screws. According to such a joint structure, in addition to the direct heat conduction from the battery charging IC 33 to the heat receiving portion 45, the heat of the substrate surface around the battery charging IC 33 can be conducted to the heat receiving portion 45 by the fastening body 54. The total amount of heat conducted from the IC 33 to the heat receiving portion 45 can be increased. Therefore, the battery charging IC 33 can be more reliably prevented from being exposed to high temperatures, and the control function of the charging circuit 32 can be maintained in a normal state for a long period of time.
ヒートシンク９の受熱部４５の端部に受熱凹部７７を形成し、その内面に電池充電ＩＣ３３および充電用実装領域Ｒを密着させるようにした。こうした接合構造によれば、電池充電ＩＣ３３の熱を、電池充電ＩＣ３３と充電用実装領域Ｒの基板面の各接合面から受熱部４５に同時に伝導して、電池充電ＩＣ３３の温度が高くなるのをさらに効果的に防止できる。従って、電池充電ＩＣ３３の機能が劣化するのを防止して、２次電池５の充電を効率良く行うことができる。
The heat receiving concave portion 77 is formed at the end of the heat receiving portion 45 of the heat sink 9, and the battery charging IC 33 and the charging mounting region R are brought into close contact with the inner surface thereof. According to such a joint structure, the heat of the battery charging IC 33 is simultaneously conducted from the joint surfaces of the battery charging IC 33 and the substrate surface of the charging mounting region R to the heat receiving portion 45, and the temperature of the battery charging IC 33 increases. It can be prevented more effectively. Therefore, the function of the battery charging IC 33 can be prevented from deteriorating and the secondary battery 5 can be charged efficiently.
ヒートシンク９の受熱部４５と、制御基板６の充電用実装領域Ｒを、電力供給部７が設けてある本体ケース１の端部寄りまで連出して、充電用実装領域Ｒに実装した電池充電ＩＣ３３を受熱部４５に接合するようにした。こうした接合構造によれば、ヒートシンク９の受熱部４５を本体ケース１の端部寄りまで連出した分だけ、受熱部４５の放熱面積を大きくして、その分だけ受熱部４５の放熱熱量を向上できる。従って、２次電池５が繰返し充電される場合でも、電池充電ＩＣ３３が高温に晒されて、充電制御機能が劣化するのを効果的に防止して、２次電池５の充電を効率良く行うことができる。また、電池充電ＩＣ３３を受熱部４５の下端寄りに密着接合するので、放熱部４４から電池充電ＩＣ３３に至る熱伝導経路長を大きくすることができ、その分だけ放熱部４４から電池充電ＩＣ３３へ伝導する熱量を減少できる。
The battery charging IC 33 mounted in the charging mounting area R by extending the heat receiving section 45 of the heat sink 9 and the charging mounting area R of the control board 6 to the end of the main body case 1 where the power supply section 7 is provided. Was joined to the heat receiving portion 45. According to such a joint structure, the heat radiating area of the heat receiving portion 45 is increased by the amount of the heat receiving portion 45 of the heat sink 9 that extends toward the end portion of the main body case 1, and the amount of heat radiated by the heat receiving portion 45 is improved accordingly. it can. Therefore, even when the secondary battery 5 is repeatedly charged, it is possible to effectively prevent the charge control function from being deteriorated by exposing the battery charging IC 33 to a high temperature and to efficiently charge the secondary battery 5. You can Further, since the battery charging IC 33 is closely bonded to the lower end of the heat receiving portion 45, the heat conduction path length from the heat radiating portion 44 to the battery charging IC 33 can be increased, and the heat radiating portion 44 conducts heat to the battery charging IC 33 accordingly. The amount of heat generated can be reduced.
ヒートシンク９の受熱部４５と制御基板６の充電用実装領域Ｒを、２次電池５の端部を越えて本体ケース１の他端寄りに配置し、充電用実装領域Ｒに実装した電池充電ＩＣ３３が受熱部４５に接合するようにした。こうした接合構造によれば、ヒートシンク９の受熱部４５を２次電池５の端部を越えて本体ケース１の下端寄りにまで連出するだけの単純な構造のみで、受熱部４５の放熱面積を大きくして、その分だけ受熱部４５の放熱熱量を向上し、電池充電ＩＣ３３の温度上昇を抑止できる。
The battery charging IC 33 mounted on the charging mounting region R by disposing the heat receiving portion 45 of the heat sink 9 and the charging mounting region R of the control board 6 over the end of the secondary battery 5 toward the other end of the main body case 1. Is joined to the heat receiving portion 45. According to such a joining structure, the heat receiving portion 45 of the heat sink 9 is extended to the lower end of the main body case 1 beyond the end portion of the secondary battery 5, and the heat radiating area of the heat receiving portion 45 is reduced. By increasing the amount, the amount of heat radiated by the heat receiving portion 45 can be improved correspondingly, and the temperature rise of the battery charging IC 33 can be suppressed.
制御基板６にスリット状の切欠７９を形成し、切欠７９に沿って制御基板６の厚み方向へ弾性変形可能な充電用実装領域Ｒを形成するようにした。また、充電用実装領域Ｒに配置した電池充電ＩＣ３３を、充電用実装領域Ｒの基板の弾性力で、ヒートシンク９の受熱部４５に密着付勢するようにした。こうした接合構造によれば、電池充電ＩＣ３３が充電用実装領域Ｒの基板の弾性力で、ヒートシンク９の受熱部４５に密着されるので、電池充電ＩＣ３３の熱を効果的に受熱部４５へ伝導することができる。また、充電用実装領域Ｒを受熱部４５に締結するための締結体５４やディスタンスカラー５５を省略できる分だけ接合構造を簡素化しコストを削減できる。
A slit-shaped notch 79 is formed in the control board 6, and a charging mounting region R that is elastically deformable in the thickness direction of the control board 6 is formed along the notch 79. Further, the battery charging IC 33 arranged in the charging mounting region R is urged to adhere to the heat receiving portion 45 of the heat sink 9 by the elastic force of the substrate in the charging mounting region R. With such a joint structure, the battery charging IC 33 is brought into close contact with the heat receiving portion 45 of the heat sink 9 by the elastic force of the substrate in the charging mounting region R, so that the heat of the battery charging IC 33 is effectively conducted to the heat receiving portion 45. be able to. Further, the joint structure for fastening the charging mounting region R to the heat receiving portion 45 and the distance collar 55 can be omitted, so that the joint structure can be simplified and the cost can be reduced.
電池充電ＩＣ３３とヒートシンク９の受熱部４５を伝熱具８０で接続して、電池充電ＩＣ３３の熱を、伝熱具８０を介して受熱部４５へ伝導するようにした。こうした接合構造によれば、電池充電ＩＣ３３の熱を伝熱具８０で受熱部４５へ伝導して、電池充電ＩＣ３３が高温になるのを防止できる。従って、２次電池５が繰返し充電される場合でも、電池充電ＩＣ３３の機能が劣化するのを防止して、２次電池５の充電を効率良く行うことができる。また、伝熱具８０の厚みを、受熱部４５の前後厚みより薄く設定したので、受熱部４５が充電用実装領域Ｒにまで連出されている場合に比べて、ヒートシンク９の重量を小さくでき、その分だけ持重りのしない小型電気機器を提供できる。
The battery charging IC 33 and the heat receiving part 45 of the heat sink 9 are connected by the heat transfer tool 80 so that the heat of the battery charging IC 33 is conducted to the heat receiving part 45 via the heat transfer tool 80. With such a joint structure, it is possible to prevent the heat of the battery charging IC 33 from being conducted to the heat receiving portion 45 by the heat transfer tool 80, so that the temperature of the battery charging IC 33 becomes high. Therefore, even when the secondary battery 5 is repeatedly charged, it is possible to prevent the function of the battery charging IC 33 from deteriorating and efficiently charge the secondary battery 5. Further, since the thickness of the heat transfer tool 80 is set to be thinner than the front-back thickness of the heat receiving portion 45, the weight of the heat sink 9 can be reduced as compared with the case where the heat receiving portion 45 is continuously extended to the charging mounting region R. Therefore, it is possible to provide a small electric device that does not have a heavy weight.
（実施例１） 図１から図７に、本発明に係る小型電気機器を美容器具に適用した実施例１を示す。本発明における前後、左右、上下とは、図１、図２、および図４に示す交差矢印と、矢印の近傍の前後、左右、上下の表記に従う。図２において美容器具は、グリップを兼ねる本体ケース１と、本体ケース１の上側のヘッド部２を備えており、ヘッド部２の前後に、スキンケア用の前熱刺激体（刺激付与体）３と後熱刺激体（刺激付与体）４とが設けられている。本体ケース１の内部には電源用の２次電池５と縦長四角形状の制御基板６が配置されており、２次電池５の下方のケース端に給電ソケット（電力供給部）７が設けられている。ヘッド部２の内部には、前熱刺激体３に冷熱または温熱を送給する熱電変換素子（ペルチェ素子）８と、熱電変換素子８の温熱を放出するヒートシンク９とが配置されている。後熱刺激体４の前面（内面）には、ヒートシンク９の熱を後熱刺激体４に伝導する伝熱体１０が配置されている。図２において符号１１は、２次電池５の充電時に給電ソケット７に接続される給電プラグであり、充電用アダプターの直流電流を供給する。
(Example 1) FIGS. 1 to 7 show Example 1 in which the small electric device according to the present invention is applied to a beauty tool. The front-rear, left-right, and top-bottom in the present invention follow the cross arrows shown in FIGS. 1, 2, and 4, and the front-rear, left-right, and top-bottom notations in the vicinity of the arrows. In FIG. 2, the beauty device includes a main body case 1 that also serves as a grip, and a head portion 2 on the upper side of the main body case 1. Before and after the head portion 2, a pre-heat stimulator (stimulation imparting body) 3 for skin care is provided. A post-heat stimulator (stimulator) 4 is provided. Inside the main body case 1, a secondary battery 5 for power supply and a vertically long rectangular control board 6 are arranged, and a power supply socket (electric power supply unit) 7 is provided at the case end below the secondary battery 5. There is. Inside the head part 2, a thermoelectric conversion element (Peltier element) 8 for supplying cold heat or warm heat to the pre-thermostimulator 3 and a heat sink 9 for discharging warm heat of the thermoelectric conversion element 8 are arranged. On the front surface (inner surface) of the post-thermal stimulus body 4, a heat transfer body 10 that transfers the heat of the heat sink 9 to the post-thermal stimulus body 4 is arranged. In FIG. 2, reference numeral 11 is a power supply plug that is connected to the power supply socket 7 when the secondary battery 5 is charged, and supplies the DC current of the charging adapter.
本体ケース１は、前後に分割された前ケース１ａと後ケース１ｂとを接合して中空ケース状に構成されている。前ケース１ａのヘッド部２の側の前面中央には、ヒートシンク９用の円形のシンク開口１３が開口され、シンク開口１３の周囲壁に設けた円形の前装着座１４に前熱刺激体３が装着固定されている。前ケース１ａの左右両側には、外部空気の出入りを許す一群の通気スリット３０が形成されている。後ケース１ｂのヘッド部２の側の後面中央に後熱刺激体４用の円形の後開口１５が開口され、後開口１５の周囲壁に設けられた円形の後装着座１６に後熱刺激体４が装着固定されている。後開口１５の内面（前面）には、垂直の内壁１７が後ケース１ｂと一体に設けられており、内壁１７の前面中央に筒軸状の締結ボス１８が一体に設けられている。後熱刺激体４の内面には、バイブレーター１９を支持するホルダー枠２０が一体に設けられている。後ケース１ｂの後面下部には、前熱刺激体３と協同して肌面に電流刺激を付与するためのグリップ電極２１が設けられている。
The main body case 1 is formed as a hollow case by joining a front case 1a and a rear case 1b which are divided into front and rear. A circular sink opening 13 for the heat sink 9 is opened in the center of the front surface of the front case 1a on the side of the head portion 2, and the front thermal stimulator 3 is mounted on a circular front mounting seat 14 provided on the peripheral wall of the sink opening 13. It is installed and fixed. A group of ventilation slits 30 are formed on both left and right sides of the front case 1a to allow the outside air to flow in and out. A circular rear opening 15 for the rear heat stimulating body 4 is opened in the center of the rear surface of the rear case 1b on the side of the head portion 2, and the rear heat stimulating body is mounted on a circular rear mounting seat 16 provided on the peripheral wall of the rear opening 15. 4 is attached and fixed. On the inner surface (front surface) of the rear opening 15, a vertical inner wall 17 is integrally provided with the rear case 1b, and a cylindrical shaft-shaped fastening boss 18 is integrally provided at the center of the front surface of the inner wall 17. A holder frame 20 that supports the vibrator 19 is integrally provided on the inner surface of the post-thermal stimulator 4. A grip electrode 21 is provided on the lower portion of the rear surface of the rear case 1b for cooperating with the front thermal stimulator 3 to apply current stimulation to the skin surface.
図５において、制御基板６の下半部には、電源スイッチ２３と、イオン導入／導出スイッチ２４と、バイブレーター１９用のスイッチ２５と、運転モードを切換える切換えスイッチ２６とが実装されており、各スイッチ２３〜２６に対応して本体ケース１の前面に設けたスイッチボタン２３ａ〜２６ａをオン・オフ操作することにより、美容器具の作動状態を種々に切換えることができる。制御基板６には上記のスイッチ以外に、刺激レベルを調整するスイッチを設けることができる。電源スイッチ２３の上方の制御基板６には、美容器具の各モード切換え状態に対応して点灯する３個のＬＥＤ２７が実装されており、各ＬＥＤ２７の発光を本体ケース１に設けた導光体２７ａで表示することで、ユーザーに現在の運転モードを視認させることができる。
In FIG. 5, a power switch 23, an ion introducing/deriving switch 24, a vibrator 25 switch 25, and a switching switch 26 for switching the operation mode are mounted on the lower half of the control board 6. By turning on/off the switch buttons 23a to 26a provided on the front surface of the main body case 1 in correspondence with the switches 23 to 26, the operating state of the beauty device can be variously switched. In addition to the above switches, the control board 6 may be provided with a switch for adjusting the stimulation level. On the control board 6 above the power switch 23, three LEDs 27 that are turned on corresponding to each mode switching state of the beauty tool are mounted, and light emission of each LED 27 is provided in the main body case 1 as a light guide 27a. By displaying with, the user can visually recognize the current operation mode.
制御基板６の後面には、２次電池５を支持する電極端子２８が固定されており、制御基板６の後面の最下部には、給電ソケット７から導出したリード線が固定されている。また、制御基板６の上部には矩形状の充電用実装領域Ｒ（図６参照）が設けられており、同領域Ｒの後面に２次電池５に充電電流を供給する充電回路３２が実装されている。充電回路３２は、充電時に充電回路３２から出力される充電電流および充電電圧を制御する電池充電ＩＣ３３を含んで構成してあり、電池充電ＩＣ３３は制御基板６に半田付けされている。制御基板６はその４個所に挿通したビス２９（図５参照）で前ケース１ａに固定されている。
An electrode terminal 28 supporting the secondary battery 5 is fixed to the rear surface of the control board 6, and a lead wire led out from the power supply socket 7 is fixed to the lowermost portion of the rear surface of the control board 6. Further, a rectangular charging mounting region R (see FIG. 6) is provided on the upper part of the control board 6, and a charging circuit 32 for supplying a charging current to the secondary battery 5 is mounted on the rear surface of the region R. ing. The charging circuit 32 includes a battery charging IC 33 that controls the charging current and the charging voltage output from the charging circuit 32 during charging, and the battery charging IC 33 is soldered to the control board 6. The control board 6 is fixed to the front case 1a with screws 29 (see FIG. 5) inserted in the four places.
前熱刺激体３はアルミニウム合金などの金属製のダイキャスト成形品からなり、鏡面処理された部分球面状の肌接触面３５を有し、その内面に熱電変換素子８用の平坦な素子接合座３６が形成され、素子接合座３６の中央部分にねじボス３７が後ろ向きに突設されている。前熱刺激体３の周縁にはリング状の接合座３８が後向きに突設されており、この接合座３８とパッキン３９とを前装着座１４に接合することで、前熱刺激体３は前ケース１ａと一体化されている。熱電変換素子８は円形リング状に形成されており、その前後面が先の素子接合座３６と、ヒートシンク９の前端の平坦な素子接合座４６に対して、シリコン樹脂製の伝熱シート４０を介して密着接合されている。伝熱シート４０は、熱電変換素子８から各素子接合座３６・４６への熱伝導を促進するために設けられている。
The pre-heat stimulator 3 is made of a metal die-cast product such as an aluminum alloy and has a mirror-finished partially spherical skin contact surface 35, and a flat element bonding seat for the thermoelectric conversion element 8 is provided on the inner surface thereof. 36 is formed, and a screw boss 37 is provided on the central portion of the element joining seat 36 so as to project rearward. A ring-shaped joint seat 38 is provided on the periphery of the front thermal stimulator 3 so as to project rearward. By connecting the joint seat 38 and the packing 39 to the front mounting seat 14, the front thermal stimulator 3 is moved forward. It is integrated with the case 1a. The thermoelectric conversion element 8 is formed in a circular ring shape, and the heat transfer sheet 40 made of silicon resin is attached to the element joining seat 36 whose front and rear surfaces are first and the flat element joining seat 46 at the front end of the heat sink 9. It is closely bonded through. The heat transfer sheet 40 is provided to promote heat conduction from the thermoelectric conversion element 8 to the element joint seats 36 and 46.
ヒートシンク９は、アルミニウム合金などの金属製のダイキャスト成形品からなり、後面に一群の放熱フィン４３が形成された円形の放熱部４４と、放熱部４４から制御基板６に向かって延出される矩形状の受熱部４５とを備えている。放熱部４４の前面には、素子接合座４６を備えた円形のシンク基部４７が設けられており、シンク基部４７の後面中央に前後面が開口する筒ボス４８が設けられ、筒ボス４８の上下に一対の伝熱ボス４９が設けられている。また、シンク基部４７の基端周囲の平坦壁と、同壁と正対する前装着座１４の内面には、互いに係合してヒートシンク９を位置決めするＶ字状の位置決め凹部５０と、Ｖ字状の位置決めリブ５１とがリング状に形成されている。なお、放熱部４４を構成する放熱フィン４３は省略してもよい。なお、締結ボス１８、ねじボス３７、および筒ボス４８とビス７２は、シンク基部４７の後面中央の１個所に設けたが、シンク基部４７の後面の複数個所に設けることができる。その場合には、前熱刺激体３がヒートシンク９に対して回転変位し、あるいはずれ動くのを確実に防止できる。
The heat sink 9 is made of a metal die-cast product such as an aluminum alloy, and has a circular heat dissipation portion 44 having a group of heat dissipation fins 43 formed on the rear surface, and a rectangular shape extending from the heat dissipation portion 44 toward the control board 6. And a heat receiving portion 45 having a shape. A circular sink base portion 47 having an element joining seat 46 is provided on the front surface of the heat dissipation portion 44, and a cylindrical boss 48 having front and rear surfaces opened is provided at the center of the rear surface of the sink base portion 47. Is provided with a pair of heat transfer bosses 49. Further, the flat wall around the base end of the sink base 47 and the inner surface of the front mounting seat 14 that faces the wall are V-shaped positioning recesses 50 that engage with each other to position the heat sink 9, and a V-shaped positioning recess 50. The positioning rib 51 and the positioning rib 51 are formed in a ring shape. It should be noted that the heat radiation fins 43 forming the heat radiation portion 44 may be omitted. Although the fastening boss 18, the screw boss 37, the cylindrical boss 48, and the screw 72 are provided at one position on the center of the rear surface of the sink base 47, they can be provided at a plurality of positions on the rear surface of the sink base 47. In that case, it is possible to reliably prevent the pre-heat stimulator 3 from being rotationally displaced or displaced with respect to the heat sink 9.
２次電池５を充電するとき、電池充電ＩＣ３３は発熱し、１００℃前後にまで温度が上がる。そのため、２次電池５が繰返し充電されると、電池充電ＩＣ３３の機能劣化が進んで、電池充電ＩＣ３３の寿命が短くなるおそれがある。こうした不具合を解消するために、本実施例では、電池充電ＩＣ３３の後面をヒートシンク９の受熱部４５にシリコン樹脂製の伝熱シート５３を介して接合することにより、電池充電ＩＣ３３の熱を受熱部４５の側へ効果的に逃がすようにしている。
When the secondary battery 5 is charged, the battery charging IC 33 generates heat and the temperature rises to around 100°C. Therefore, when the secondary battery 5 is repeatedly charged, the function of the battery charging IC 33 may deteriorate, and the life of the battery charging IC 33 may be shortened. In order to solve such a problem, in the present embodiment, the rear surface of the battery charging IC 33 is joined to the heat receiving portion 45 of the heat sink 9 via the heat transfer sheet 53 made of silicon resin so that the heat of the battery charging IC 33 is received. It is designed to effectively escape to the 45 side.
具体的には、図６および図７に示すように、電池充電ＩＣ３３を間に挟んで、充電用実装領域Ｒの左右に挿通したビス（締結体）５４を、ディスタンスカラー５５を介して受熱部４５のねじ穴５６にねじ込んで、電池充電ＩＣ３３および伝熱シート５３が受熱部４５に密着する状態で、充電用実装領域Ｒを受熱部４５に締結固定している。このように、電池充電ＩＣ３３の熱を表面積が大きなヒートシンク９の側へ逃がすことにより、２次電池５を充電するときの電池充電ＩＣ３３の温度が高温になるのを防止できる。従って、２次電池５が繰返し充電される場合でも、電池充電ＩＣ３３の機能が劣化することを抑えて、２次電池５の充電を効率良く行うことができる。
Specifically, as shown in FIG. 6 and FIG. 7, screws (fastening bodies) 54 that are inserted on the left and right sides of the charging mounting region R with the battery charging IC 33 interposed therebetween are provided with a heat receiving portion via a distance collar 55. The charging mounting region R is fastened and fixed to the heat receiving portion 45 in a state in which the battery charging IC 33 and the heat transfer sheet 53 are in close contact with the heat receiving portion 45 by being screwed into the screw holes 56 of 45. In this way, by letting the heat of the battery charging IC 33 escape to the side of the heat sink 9 having a large surface area, it is possible to prevent the temperature of the battery charging IC 33 from becoming high when the secondary battery 5 is charged. Therefore, even when the secondary battery 5 is repeatedly charged, deterioration of the function of the battery charging IC 33 can be suppressed and the secondary battery 5 can be efficiently charged.
上記の接合構造によれば、充電用実装領域Ｒと受熱部４５を一対のビス５４で締結固定するだけの簡単な構造を付加するだけで、電池充電ＩＣ３３と受熱部４５の密着度合いを高めて、電池充電ＩＣ３３の熱をさらに効果的に受熱部４５へ伝導することができる。また、電池充電ＩＣ３３の周囲複数個所において、金属製のビス５４で、充電用実装領域Ｒを受熱部４５に締結固定するので、電池充電ＩＣ３３から受熱部４５への直接的な熱伝導に加えて、電池充電ＩＣ３３の周囲の基板面の熱をビス５４で受熱部４５に伝導して、電池充電ＩＣ３３から受熱部４５へ伝導される総熱量を増加できる。従って、電池充電ＩＣ３３が高温に晒されるのをさらに確実に解消して、充電回路３２の制御機能を長期にわたって正常な状態に維持できる。
According to the above-described joining structure, the degree of close contact between the battery charging IC 33 and the heat receiving portion 45 can be increased by simply adding a simple structure in which the charging mounting region R and the heat receiving portion 45 are fastened and fixed with the pair of screws 54. The heat of the battery charging IC 33 can be more effectively conducted to the heat receiving portion 45. Further, at a plurality of locations around the battery charging IC 33, the charging mounting region R is fastened and fixed to the heat receiving portion 45 by the metal screws 54, so that in addition to direct heat conduction from the battery charging IC 33 to the heat receiving portion 45, The heat of the substrate surface around the battery charging IC 33 can be conducted to the heat receiving portion 45 by the screw 54, and the total amount of heat conducted from the battery charging IC 33 to the heat receiving portion 45 can be increased. Therefore, the battery charging IC 33 can be more reliably prevented from being exposed to high temperatures, and the control function of the charging circuit 32 can be maintained in a normal state for a long period of time.
しかし、美容器具の使用時、例えば熱電変換素子８の冷熱が前熱刺激体３に供給され、熱電変換素子８の温熱がヒートシンク９の放熱部４４から放出される状況では、放熱部４４の熱が受熱部４５側へ伝導されて、電池充電ＩＣ３３の温度が上昇するおそれがある。こうした不具合を解消するために、放熱部４４と受熱部４５の間に熱遮断部５７を設け、熱遮断部５７に放熱部４４の熱が受熱部４５へ伝導するのを規制する熱遮断構造を設けている。図６に示すようにこの実施例では、熱遮断部５７に縦長長方形状の３個の熱遮断穴５８を前後に貫通する状態で設けて熱遮断構造とした。このように熱遮断部５７に熱遮断穴５８を設けると、熱遮断部５７における伝熱断面積を減少させることができるので、その分だけ放熱部４４から受熱部４５へ伝導される熱量を減少して、電池充電ＩＣ３３の温度が上昇するのを防止できる。また、熱遮断穴５８を形成するのに伴い熱遮断部５７の表面積を大きくして、熱遮断部５７における放熱作用を向上できる。
However, when the beauty tool is used, for example, in the situation where the cold heat of the thermoelectric conversion element 8 is supplied to the pre-heat stimulator 3 and the heat of the thermoelectric conversion element 8 is released from the heat radiation portion 44 of the heat sink 9, the heat of the heat radiation portion 44 is used. May be conducted to the heat receiving portion 45 side and the temperature of the battery charging IC 33 may rise. In order to eliminate such a problem, a heat blocking unit 57 is provided between the heat radiating unit 44 and the heat receiving unit 45, and the heat blocking unit 57 has a heat blocking structure that restricts the heat of the heat radiating unit 44 from being transferred to the heat receiving unit 45. It is provided. As shown in FIG. 6, in this embodiment, the heat shield 57 is provided with three vertically elongated rectangular heat shield holes 58 in a state of penetrating in the front-rear direction. By providing the heat shield hole 58 in the heat shield portion 57 in this manner, the heat transfer cross-sectional area in the heat shield portion 57 can be reduced, and thus the amount of heat conducted from the heat radiating portion 44 to the heat receiving portion 45 is reduced accordingly. Then, the temperature of the battery charging IC 33 can be prevented from rising. Further, the surface area of the heat blocking portion 57 can be increased with the formation of the heat blocking hole 58 to improve the heat radiation effect of the heat blocking portion 57.
後熱刺激体４はプラスチック成形品からなり、部分球面状の肌接触面６１を有し、その周縁内面の４個所に弾性係合爪６２が一体に設けられている（図１参照）。また、後熱刺激体４の内面中央にはバイブレーター１９を水平姿勢で支持するホルダー枠２０が設けられている。後熱刺激体４の周縁にはリング状の接合部６３が設けられており、この接合部６３をパッキン６４と共に後装着座１６に接合し、弾性係合爪６２を後ケース１ｂの係合壁６５に係合することにより、後熱刺激体４を後ケース１ｂと一体化できる。図４に示すように、バイブレーター１９は、小型のモーター６６と、その出力軸に固定した偏心錘６７を備えており、モーター６６を回転駆動することにより振動を発生させることができる。後熱刺激体４の肌接触面６１の球面半径は、前熱刺激体３の肌接触面３５の球面半径より大きく設定してある。このように、後熱刺激体４の肌接触面６１の球面半径が大きく設定してあると、肌接触面６１の肌面に対する当りをソフトにして、バイブレーター１９による振動刺激が肌面に対して必要以上に付与されるのを防止できる。
The post-thermal stimulator 4 is made of a plastic molded product, has a skin contact surface 61 with a partially spherical shape, and elastic engaging claws 62 are integrally provided at four points on the inner surface of the peripheral edge thereof (see FIG. 1). In addition, a holder frame 20 that supports the vibrator 19 in a horizontal posture is provided at the center of the inner surface of the post-thermal stimulator 4. A ring-shaped joint 63 is provided on the peripheral edge of the rear thermal stimulator 4, the joint 63 is joined to the rear mounting seat 16 together with the packing 64, and the elastic engagement claw 62 is attached to the engagement wall of the rear case 1b. By engaging with 65, the post thermal stimulator 4 can be integrated with the rear case 1b. As shown in FIG. 4, the vibrator 19 includes a small motor 66 and an eccentric weight 67 fixed to its output shaft, and can vibrate by rotationally driving the motor 66. The spherical radius of the skin contact surface 61 of the post thermal stimulus 4 is set to be larger than the spherical radius of the skin contact surface 35 of the front thermal stimulus 3. In this way, when the spherical radius of the skin contact surface 61 of the post-heat stimulator 4 is set to be large, the contact of the skin contact surface 61 with respect to the skin surface is softened, and the vibration stimulation by the vibrator 19 with respect to the skin surface. It can be prevented from being given more than necessary.
伝熱体１０は、アルミニウム合金などの金属製のダイキャスト成形品からなり、後熱刺激体４の内面（前面）に密着する部分球殻状の本体部１０ａと、本体部１０ａの内面の上下に突設される受熱軸１０ｂとを一体に備えている。本体部１０ａの中央部分にはバイブレーター１９を受入れる逃げ開口６９が形成されている。受熱軸１０ｂを伝熱ボス４９に内嵌連結させるために、後ケース１ｂの内壁１７には上下一対の挿通穴７０が形成されている。また、挿通穴７０の上下にはヒートシンク９の放熱フィン４３に接当する押圧リブ７１が突設されている。
The heat transfer body 10 is made of a die-cast molded product made of a metal such as an aluminum alloy, and has a partially spherical shell-shaped main body portion 10a that closely adheres to the inner surface (front surface) of the post-thermal stimulus body 4 and upper and lower inner surfaces of the main body portion 10a. Is integrally provided with the heat receiving shaft 10b protrudingly provided. An escape opening 69 for receiving the vibrator 19 is formed in the central portion of the main body 10a. A pair of upper and lower insertion holes 70 are formed in the inner wall 17 of the rear case 1b in order to internally connect the heat receiving shaft 10b to the heat transfer boss 49. In addition, pressing ribs 71 that come into contact with the heat radiation fins 43 of the heat sink 9 are provided above and below the insertion hole 70.
前熱刺激体３、熱電変換素子８、ヒートシンク９と、制御基板６は、以下の手順で前ケース１ａに組むことができる。まず、給電ソケット７が接続された制御基板６の充電用実装領域Ｒを、ヒートシンク９の受熱部４５に正対させ、伝熱シート５３および電池充電ＩＣ３３が受熱部４５に密着する状態で、充電用実装領域Ｒを２個のビス５４で受熱部４５に締結して、制御基板６とヒートシンク９を一体化する。次に、前ケース１ａの前装着座１４にパッキン３９と前熱刺激体３を仮組みし、さらに前熱刺激体３の素子接合座３６に伝熱シート４０と熱電変換素子８を組み、熱電変換素子８の後面に２枚目の伝熱シート４０を組む。この状態で、制御基板６が一体化されたヒートシンク９を、前ケース１ａの内面に組んで、位置決め凹部５０を位置決めリブ５１に係合させて、ヒートシンク９を前ケース１ａに対して位置決めしたのち、制御基板６を４個のビス２９で前ケース１ａに固定し、給電ソケット７を前ケース１ａの係合溝に嵌め込む。
The pre-heat stimulator 3, the thermoelectric conversion element 8, the heat sink 9, and the control board 6 can be assembled in the front case 1a by the following procedure. First, the mounting area R for charging of the control board 6 to which the power supply socket 7 is connected is directly opposed to the heat receiving portion 45 of the heat sink 9, and charging is performed with the heat transfer sheet 53 and the battery charging IC 33 in close contact with the heat receiving portion 45. The mounting area R is fastened to the heat receiving portion 45 with the two screws 54, and the control board 6 and the heat sink 9 are integrated. Next, the packing 39 and the front thermal stimulus 3 are temporarily assembled to the front mounting seat 14 of the front case 1a, and the heat transfer sheet 40 and the thermoelectric conversion element 8 are further assembled to the element joint seat 36 of the front thermal stimulus 3 to form the thermoelectric conversion element 8. The second heat transfer sheet 40 is assembled on the rear surface of the conversion element 8. In this state, the heat sink 9 integrated with the control board 6 is assembled on the inner surface of the front case 1a, the positioning recess 50 is engaged with the positioning rib 51, and the heat sink 9 is positioned with respect to the front case 1a. The control board 6 is fixed to the front case 1a with four screws 29, and the power supply socket 7 is fitted into the engagement groove of the front case 1a.
以上の組付けが終了したら、後ケース１ｂを前ケース１ａに被付けて締結ボス１８を筒ボス４８の内部に挿入し、締結ボス１８の前端を前熱刺激体３のねじボス３７に外嵌させる。この状態で、筒ボス４８に挿入したビス（締結具）７２をねじボス３７にねじ込み、さらに後ケース１ｂの下部に挿通したビス７３（図３参照）を前ケース１ａのねじボス７４にねじ込むことにより、前後ケース１ａ・１ｂを一体化できる。前後ケース１ａ・１ｂを一体化した状態では、前熱刺激体３が後ケース１ｂ側へ引寄せられ、さらに、後ケース１ｂに設けた押圧リブ７１が放熱フィン４３に接当して、ヒートシンク９を前ケースに押付けている。つまり、熱電変換素子８とヒートシンク９は、前ケース１ａに装着した前熱刺激体３と後ケース１ｂで挟持固定されており、前ケース１ａは、前熱刺激体３と後ケース１ｂで挟持固定されている。以後は、伝熱体１０の受熱軸１０ｂの前部を挿通穴７０から伝熱ボス４９のボス内に係合して、伝熱体１０をヒートシンク９に連結する。最後に、パッキン６４と後熱刺激体４を後ケース１ｂの後装着座１６に接合し、後熱刺激体４の弾性係合爪６２を後ケース１ｂの係合壁６５に係合することにより、美容器具を完成できる。
After the above-mentioned assembly is completed, the rear case 1b is attached to the front case 1a, the fastening boss 18 is inserted into the cylindrical boss 48, and the front end of the fastening boss 18 is externally fitted to the screw boss 37 of the front thermal stimulator 3. Let In this state, screw the screw (fastener) 72 inserted into the tubular boss 48 into the screw boss 37, and screw the screw 73 (see FIG. 3) inserted into the lower part of the rear case 1b into the screw boss 74 of the front case 1a. Thereby, the front and rear cases 1a and 1b can be integrated. In the state in which the front and rear cases 1a and 1b are integrated, the front thermal stimulator 3 is pulled toward the rear case 1b, and the pressing rib 71 provided on the rear case 1b abuts on the heat radiation fin 43, so that the heat sink 9 Is pressed against the front case. That is, the thermoelectric conversion element 8 and the heat sink 9 are clamped and fixed by the front thermal stimulus 3 and the rear case 1b mounted on the front case 1a, and the front case 1a is clamped and fixed by the front thermal stimulus 3 and the rear case 1b. Has been done. After that, the front portion of the heat receiving shaft 10b of the heat transfer body 10 is engaged with the boss of the heat transfer boss 49 through the insertion hole 70 to connect the heat transfer body 10 to the heat sink 9. Finally, the packing 64 and the rear thermal stimulator 4 are joined to the rear mounting seat 16 of the rear case 1b, and the elastic engaging claws 62 of the rear thermal stimulator 4 are engaged with the engaging wall 65 of the rear case 1b. You can complete beauty equipment.
美容器具を使用するときは、電源スイッチ２３をオン状態に切換えたのち、運転モードの切換えスイッチ２６を操作して、温熱モードと、冷熱モードと、温冷交互モードのいずれかを選択する。さらに、イオン導入／導出スイッチ２４をオン操作し、さらにバイブレーター１９用のスイッチ２５をオン操作することにより、美容器具をユーザーの目的に応じた運転状態に設定できる。温熱モードにおいては、前熱刺激体３が熱電変換素子８で加熱され、冷熱モードにおいては、前熱刺激体３が熱電変換素子８で冷却される。
When using a beauty tool, after the power switch 23 is turned on, the operation mode changeover switch 26 is operated to select one of the heating mode, the cooling mode, and the heating/cooling alternating mode. Further, by turning on the ion introducing/deriving switch 24 and further turning on the switch 25 for the vibrator 19, the beauty device can be set to an operating state according to the purpose of the user. The pre-thermostimulator 3 is heated by the thermoelectric conversion element 8 in the warm mode, and the pre-thermostimulator 3 is cooled by the thermoelectric conversion element 8 in the cold mode.
イオン導入時には、前熱刺激体３にマイナス極性のパルス電流が供給され、グリップ電極２１にはプラス極性のパルス電流が供給されている。グリップ電極２１を手で握り、前熱刺激体３を顔肌に押し付けることにより閉ループが形成されて、顔肌に電流刺激を付与しながら化粧水をしみこませることができる。イオン導出時には、前熱刺激体３にプラス極性、グリップ電極２１にマイナス極性のパルス電流が供給される。グリップ電極２１を手で握り、前熱刺激体３を顔肌に押し付けることにより閉ループが形成されて、顔肌に電流刺激を付与しながら毛穴などに入り込んでいる汚れを取除くことができる。バイブレーター１９用のスイッチ２５はユーザーの好みでオン・オフできるが、特定の運転モードではバイブレーター１９が自動的に起動される。
At the time of ion introduction, a pulse current of negative polarity is supplied to the pre-heat stimulator 3 and a pulse current of positive polarity is supplied to the grip electrode 21. By holding the grip electrode 21 with the hand and pressing the pre-heat stimulator 3 against the face skin, a closed loop is formed, and the lotion can be soaked while applying current stimulation to the face skin. At the time of derivation of ions, a pulse current having a positive polarity is supplied to the pre-heat stimulator 3 and a pulse current having a negative polarity is supplied to the grip electrode 21. By holding the grip electrode 21 with a hand and pressing the pre-heat stimulator 3 against the face skin, a closed loop is formed, and it is possible to remove dirt entering pores or the like while applying current stimulation to the face skin. The switch 25 for the vibrator 19 can be turned on/off according to the preference of the user, but the vibrator 19 is automatically activated in a specific operation mode.
以上のように構成した実施例１の小型電気機器は、以下のように表現できる。
本体ケース１のヘッド部２（一端）に、熱電変換素子８と、熱電変換素子８の前面に接合される刺激付与体３と、熱電変換素子８の後面に接合されるヒートシンク９とを備えた肌刺激構造が配置されており、
本体ケース１は、前後に分割された前ケース１ａと後ケース１ｂを接合して中空ケース状に構成されており、
本体ケース１のヘッド部２（一端）の前ケース１ａにはシンク開口１３が開口されて、シンク開口１３の外面に刺激付与体３が配置され、シンク開口１３の内面にヒートシンク９が配置されており、
後ケース１ｂは前ケース１ａに接合された状態で、後ケース１ｂの後面側から刺激付与体３にねじ込んだ締結具７２で締結固定されて、刺激付与体３と熱電変換素子８、およびヒートシンク９が前ケース１ａおよび後ケース１ｂと一体化されており、
一体化された状態における熱電変換素子８とヒートシンク９が、刺激付与体３と後ケース１ｂで挟持固定されており、
さらに、前ケース１ａがヒートシンク９および後ケース１ｂと刺激付与体３で挟持固定されており、
刺激付与体３が前ケース１ａに対してパッキン３９を介して接合されている小型電気機器。
The small electric device of the first embodiment configured as described above can be expressed as follows.
A thermoelectric conversion element 8, a stimulus imparting body 3 joined to the front surface of the thermoelectric conversion element 8, and a heat sink 9 joined to the rear surface of the thermoelectric conversion element 8 are provided on the head portion 2 (one end) of the main body case 1. The skin stimulating structure is arranged,
The main body case 1 is configured by joining a front case 1a and a rear case 1b, which are divided into front and rear, into a hollow case shape,
A sink opening 13 is opened in the front case 1a of the head portion 2 (one end) of the main body case 1, the stimulus imparting body 3 is arranged on the outer surface of the sink opening 13, and the heat sink 9 is arranged on the inner surface of the sink opening 13. Cage,
The rear case 1b is joined to the front case 1a, and is fastened and fixed by a fastener 72 screwed into the stimulus imparting body 3 from the rear surface side of the rear case 1b, and the stimulus imparting body 3, the thermoelectric conversion element 8, and the heat sink 9 Is integrated with the front case 1a and the rear case 1b,
The thermoelectric conversion element 8 and the heat sink 9 in the integrated state are sandwiched and fixed by the stimulus imparting body 3 and the rear case 1b,
Further, the front case 1a is sandwiched and fixed to the heat sink 9 and the rear case 1b by the stimulus imparting body 3,
A small electric device in which the stimulus imparting body 3 is joined to the front case 1a via a packing 39.
上記のように構成した小型電気機器によれば、刺激付与体３、熱電変換素子８、およびヒートシンク９を前ケース１ａに仮組みし、さらに後ケース１ｂを前ケース１ａに接合した状態で、後ケース１ｂの後面側から刺激付与体３に締結具７２をねじ込むことで、肌刺激構造を前後ケース１ａ・１ｂと一体化できる。つまり、刺激付与体３、熱電変換素子８、ヒートシンク９と前後ケース１ａ・１ｂの５者を、１個の締結具７２のみで一体化し固定できるので、刺激付与体３、熱電変換素子８、ヒートシンク９を、例えば前ケース１ａに順に締結固定する必要がなく、しかも締結具７２の使用個数を最小限化して、その分だけ組立に要する手間とコストを軽減できる。さらに、刺激付与体３を前ケース１ａに対してパッキン３９を介して接合するので、化粧液を併用して刺激付与体３でスキンケアを行う場合に、化粧液がヘッド部２の内部に浸入するのを確実に防止でき、化粧液の侵入を原因とする電気的故障を解消できる。なお、シンク基部４７の後面の複数個所に締結構造が設けてある場合でも、個々の締結構造を１個の締結具７２のみで一体化し固定できる。
According to the small-sized electric device configured as described above, the stimulus imparting body 3, the thermoelectric conversion element 8, and the heat sink 9 are temporarily assembled to the front case 1a, and the rear case 1b is joined to the front case 1a. By screwing the fastener 72 into the stimulus applying body 3 from the rear surface side of the case 1b, the skin stimulating structure can be integrated with the front and rear cases 1a and 1b. That is, since the stimulus imparting body 3, the thermoelectric conversion element 8, the heat sink 9 and the front and rear cases 1a and 1b can be integrated and fixed by only one fastener 72, the stimulus imparting body 3, the thermoelectric conversion element 8, and the heat sink. It is not necessary to fasten and fasten the 9 to the front case 1a in order, and the number of fasteners 72 to be used can be minimized to reduce the labor and cost required for assembly. Furthermore, since the stimulus imparting body 3 is joined to the front case 1a through the packing 39, when the stimulating body 3 is used together for skin care, the cosmetic fluid enters the inside of the head portion 2. Can be reliably prevented, and electrical failure caused by the intrusion of cosmetic liquid can be eliminated. Even when the fastening structure is provided at a plurality of positions on the rear surface of the sink base 47, the individual fastening structures can be integrated and fixed by only one fastener 72.
刺激付与体３に締結具７２用のねじボス３７が設けられ、後ケース１ｂにねじボス３７に連結される締結ボス１８が設けられており、
ヒートシンク９に前後貫通状の筒ボス４８が形成されており、
締結ボス１８およびねじボス３７は、筒ボス４８の内部で係合連結されて、ねじボス３７に挿通した締結具７２を締結ボス１８にねじ込むことにより固定されている美容器具。
The stimulus imparting body 3 is provided with a screw boss 37 for a fastener 72, and the rear case 1b is provided with a fastening boss 18 connected to the screw boss 37.
The heat sink 9 has a cylindrical boss 48 penetrating in the front-rear direction,
The fastening boss 18 and the screw boss 37 are engaged and coupled inside the cylindrical boss 48, and are fixed by screwing the fastener 72 inserted through the screw boss 37 into the fastening boss 18.
上記のように、締結ボス１８およびねじボス３７を筒ボス４８の内部で接合し、両ボス１８・３７を締結具７２で一体化すると、締結ボス１８およびねじボス３７、あるいはいずれか一方のボスで筒ボス４８を支持することにより、ヒートシンク９を刺激付与体３および後ケース１ｂに対して正確に位置決めし、さらにヒートシンク９が刺激付与体３および後ケース１ｂに対して遊動するのを阻止できる。従って、刺激付与体３、熱電変換素子８、ヒートシンク９と前後ケース１ａ・１ｂの５者を、１個の締結具７２のみで一体化できるにも拘らず、ヒートシンク９を刺激付与体３および後ケース１ｂに対して、常に適正に組立てることができる。シンク基部４７の後面の複数個所に締結構造が設けてある場合でも、個々の締結構造を１個の締結具７２のみで一体化し固定しながら、ヒートシンク９を刺激付与体３および後ケース１ｂに対して、常に適正に組立てることができる。
As described above, when the fastening boss 18 and the screw boss 37 are joined inside the tubular boss 48 and the both bosses 18 and 37 are integrated by the fastener 72, the fastening boss 18 and the screw boss 37, or either one of the bosses By supporting the cylindrical boss 48 with, the heat sink 9 can be accurately positioned with respect to the stimulus imparting body 3 and the rear case 1b, and the heat sink 9 can be prevented from floating with respect to the stimulus imparting body 3 and the rear case 1b. .. Therefore, although the stimulus imparting body 3, the thermoelectric conversion element 8, the heat sink 9 and the five cases of the front and rear cases 1a and 1b can be integrated with only one fastener 72, the heat sink 9 is attached to the stimulus imparting body 3 and the rear case. The case 1b can always be properly assembled. Even when the fastening structure is provided at a plurality of positions on the rear surface of the sink base 47, the heat sink 9 is fixed to the stimulus imparting body 3 and the rear case 1b while the fastening structures are integrated and fixed by only one fastener 72. Therefore, it can always be assembled properly.
シンク開口１３の周囲壁の外面および内面に、刺激付与体３およびヒートシンク９がそれぞれ接合されて、刺激付与体３およびヒートシンク９がシンク開口１３の周囲壁を内外に挟持しており、
シンク開口１３の周囲壁の内面と、同壁と対向するヒートシンク９に、互いに係合して、ヒートシンク９を前ケース１ａに対して位置決めする位置決め凹部５０と位置決めリブ５１が設けられており、
刺激付与体３およびヒートシンク９に作用する締結具７２の締結力を、シンク開口１３の周囲壁で受止めている小型電気機器。
The stimulus imparting body 3 and the heat sink 9 are respectively joined to the outer surface and the inner surface of the peripheral wall of the sink opening 13, and the stimulus imparting body 3 and the heat sink 9 sandwich the peripheral wall of the sink opening 13 inside and outside,
Positioning recesses 50 and positioning ribs 51 are provided on the inner surface of the peripheral wall of the sink opening 13 and on the heat sink 9 facing the wall to engage with each other to position the heat sink 9 with respect to the front case 1a.
A small electric device in which the fastening force of the fastener 72 acting on the stimulus applying body 3 and the heat sink 9 is received by the peripheral wall of the sink opening 13.
上記のように、刺激付与体３およびヒートシンク９に作用する締結具７２の締結力を、シンク開口１３の周囲壁で受止めるようにすると、刺激付与体３とヒートシンク９の間に配置した熱電変換素子８を常に適正な挟持力で挟持固定して、仕様通りの熱特性を発揮させることができる。因みに、刺激付与体３およびヒートシンク９の締結力が、熱電変換素子８の前後面に直接作用する場合には、刺激付与体３に過剰な挟持力が作用して、熱特性が変化するなどの故障を発生し、あるいは破損するおそれがある。また、位置決め凹部５０と位置決めリブ５１を互いに係合させることにより、ヒートシンク９を前ケース１ａに対して位置決めした状態で常に適正に組むことができる。
As described above, when the fastening force of the fastener 72 acting on the stimulus imparting body 3 and the heat sink 9 is received by the peripheral wall of the sink opening 13, the thermoelectric conversion disposed between the stimulus imparting body 3 and the heat sink 9. The element 8 can always be clamped and fixed with an appropriate clamping force, and the thermal characteristics as specified can be exhibited. Incidentally, when the fastening force between the stimulus imparting body 3 and the heat sink 9 directly acts on the front and rear surfaces of the thermoelectric conversion element 8, an excessive clamping force acts on the stimulus imparting body 3 to change the thermal characteristics. Failure or damage may occur. Further, by engaging the positioning recess 50 and the positioning rib 51 with each other, the heat sink 9 can always be properly assembled in a state of being positioned with respect to the front case 1a.
本体ケース１のヘッド部２（一端）に、熱電変換素子８と、熱電変換素子８の前面に接合される刺激付与体３と、熱電変換素子８の後面に接合されるヒートシンク９を備えた肌刺激構造が配置されており、
本体ケース１のヘッド部２（一端）の後面に後側の刺激付与体４が配置されて、後側の刺激付与体４の内面に、ヒートシンク９の熱を後側の刺激付与体４に伝導する伝熱体１０が設けられており、
刺激付与体４の内面に、振動を生起するバイブレーター１９が配置されている小型電気機器。
A skin including a thermoelectric conversion element 8, a stimulus imparting body 3 bonded to the front surface of the thermoelectric conversion element 8, and a heat sink 9 bonded to the rear surface of the thermoelectric conversion element 8 on the head portion 2 (one end) of the main body case 1. The stimulation structure is placed,
The rear side stimulus imparting body 4 is arranged on the rear surface of the head portion 2 (one end) of the main body case 1, and the heat of the heat sink 9 is conducted to the rear side stimulating body 4 on the inner surface of the rear side stimulus imparting body 4. Is provided with a heat transfer body 10,
A small electric device in which a vibrator 19 that causes vibration is arranged on the inner surface of the stimulus imparting body 4.
本体ケース１のヘッド部２の後面に、後側の刺激付与体４を設けるようにした美容器具によれば、熱電変換素子８からヒートシンク９に伝導された冷熱または温熱を、伝熱体１０で後側の刺激付与体４に伝導して、後側の刺激付与体４によって肌面に熱刺激を付与しながらスキンケアを行うことができる。また、刺激付与体４の内面に配置したバイブレーター１９を作動させてスキンケアを行うことにより、振動刺激と熱刺激を同時に付与して、後側の刺激付与体４によるスキンケアをさらに効果的に行うことができる。
According to the beauty tool in which the rear side stimulus imparting body 4 is provided on the rear surface of the head portion 2 of the main body case 1, the heat transfer body 10 cools or heats the heat transferred from the thermoelectric conversion element 8 to the heat sink 9. It is possible to conduct skin care while conducting heat to the back side stimulating body 4 and applying thermal stimulus to the skin surface by the back side stimulating body 4. In addition, by vibrating the vibrator 19 disposed on the inner surface of the stimulus imparting body 4 to perform skin care, vibration stimulus and thermal stimulus are simultaneously applied, and the skin care by the stimulus imparting body 4 on the rear side is further effectively performed. You can
伝熱体１０は、後側の刺激付与体４の内面に密着する部分球殻状の本体部１０ａと、本体部１０ａの内面に突設されて、ヒートシンク９の熱を本体部１０ａへ伝導する複数の受熱軸１０ｂを一体に備えており、
バイブレーター１９が、後側の刺激付与体４の内面に設けたホルダー枠２０に装着されて、バイブレーター１９およびホルダー枠２０が、本体部１０ａの中央に形成した逃げ開口６９を介して伝熱体１０の内面側に位置されている小型電気機器。
The heat transfer body 10 is provided on a body part 10a in the shape of a partially spherical shell that is in close contact with the inner surface of the stimulating body 4 on the rear side, and is projectingly provided on the inner surface of the body part 10a to conduct the heat of the heat sink 9 to the body part 10a. A plurality of heat receiving shafts 10b are integrally provided,
The vibrator 19 is attached to the holder frame 20 provided on the inner surface of the stimulus imparting body 4 on the rear side, and the vibrator 19 and the holder frame 20 are passed through the escape opening 69 formed at the center of the main body 10a. A small electric device that is located on the inner surface side.
上記のように、本体部１０ａと複数の受熱軸１０ｂで伝熱体１０を構成し、ヒートシンク９の熱を受熱軸１０ｂで本体部１０ａへ伝導し、さらに本体部１０ａの熱を後側の刺激付与体４に伝導するようにすると、ヒートシンク９の冷熱または温熱を部分球殻状の本体部１０ａで後側の刺激付与体４にむらなく伝導でき、同時に後側の刺激付与体４の中央付近に配置したバイブレーター１９で、刺激付与体４の全体をむらなく振動させながら、肌接触面６１によるスキンケアをさらに効果的に行うことができる。また、バイブレーター１９およびホルダー枠２０が、本体部１０ａの中央に形成した逃げ開口６９を介して伝熱体１０の内面側に位置されているので、伝熱体１０がバイブレーター１９およびホルダー枠２０と直接接触してがたつき、騒音源になるのを防止できる。
As described above, the heat transfer body 10 is configured by the main body portion 10a and the plurality of heat receiving shafts 10b, the heat of the heat sink 9 is conducted to the main body portion 10a by the heat receiving shafts 10b, and the heat of the main body portion 10a is stimulated on the rear side. When conducting to the imparting body 4, the cold heat or the warm heat of the heat sink 9 can be uniformly conducted to the rear side stimulating body 4 by the partially spherical shell-shaped main body 10a, and at the same time, near the center of the rear side stimulating body 4. By vibrating the vibrator 19 arranged in the above, the stimulus imparting body 4 can be vibrated uniformly, and the skin care by the skin contact surface 61 can be more effectively performed. Further, since the vibrator 19 and the holder frame 20 are located on the inner surface side of the heat transfer body 10 via the escape opening 69 formed in the center of the main body portion 10a, the heat transfer body 10 is connected to the vibrator 19 and the holder frame 20. It is possible to prevent rattling due to direct contact and becoming a noise source.
（実施例２） 図８に、電池充電ＩＣ３３とヒートシンク９の接合構造を変更した、本発明の実施例２に係る小型電気機器（美容器具）を示す。実施例２では、ヒートシンク９の受熱部４５の肉壁に受熱凹部７７を形成し、受熱凹部７７の内部に制御基板６の充電用実装領域Ｒと電池充電ＩＣ３３を収容して、充電用実装領域Ｒの基板面と電池充電ＩＣ３３を、受熱凹部７７の前後の対向面に伝熱シート５３を介して密着させるようにした。受熱凹部７７は、受熱部４５の左右両側と下面に向かって開口している。充電回路３２は、受熱凹部７７より下方の基板面に配置した。また、実施例２では、熱遮断部５７の前後面に、断面が半円状の熱遮断溝５８を形成して、当該熱遮断溝５８を熱遮断構造とした。他は実施例１と同じであるので、同じ部材に同じ符号を付して、その説明を省略する。以下の実施例においても同じとする。
Second Embodiment FIG. 8 shows a small electric device (beauty equipment) according to a second embodiment of the present invention in which the joint structure between the battery charging IC 33 and the heat sink 9 is changed. In the second embodiment, the heat receiving concave portion 77 is formed on the wall of the heat receiving portion 45 of the heat sink 9, and the charging mounting area R of the control board 6 and the battery charging IC 33 are housed inside the heat receiving concave portion 77, and the charging mounting area is formed. The R substrate surface and the battery charging IC 33 are closely attached to the front and rear facing surfaces of the heat receiving recess 77 via the heat transfer sheet 53. The heat receiving recess 77 is open toward both the left and right sides and the lower surface of the heat receiving portion 45. The charging circuit 32 is arranged on the substrate surface below the heat receiving recess 77. Further, in the second embodiment, the heat blocking groove 57 having a semicircular cross section is formed on the front and rear surfaces of the heat blocking portion 57, and the heat blocking groove 58 has a heat blocking structure. The other parts are the same as those in the first embodiment, and therefore, the same members are designated by the same reference numerals and the description thereof is omitted. The same applies to the following examples.
上記のように、充電用実装領域Ｒの基板面と電池充電ＩＣ３３を、受熱凹部７７の前後の対向面に密着させると、電池充電ＩＣ３３の熱を、電池充電ＩＣ３３と充電用実装領域Ｒの基板面の各接合面から受熱部４５に同時に伝導して、電池充電ＩＣ３３の温度が高くなるのをさらに効果的に防止できる。従って、電池充電ＩＣ３３の機能が劣化するのを防止して、２次電池５の充電を効率良く行うことができる。
As described above, when the board surface of the charging mounting area R and the battery charging IC 33 are brought into close contact with the front and rear facing surfaces of the heat receiving recess 77, the heat of the battery charging IC 33 is transferred to the board of the battery charging IC 33 and the charging mounting area R. It is possible to more effectively prevent the temperature of the battery charging IC 33 from increasing due to simultaneous conduction from the respective joint surfaces to the heat receiving portion 45. Therefore, the function of the battery charging IC 33 can be prevented from deteriorating and the secondary battery 5 can be charged efficiently.
（実施例３） 図９および図１０に、電池充電ＩＣ３３とヒートシンク９の接合構造を変更した本発明の実施例３に係る小型電気機器（美容器具）を示す。実施例３では、ヒートシンク９の受熱部４５と制御基板６の充電用実装領域Ｒを本体ケース１の下端寄りにまで連出し、充電用実装領域Ｒに実装した電池充電ＩＣ３３を受熱部４５の下端寄りに密着接合した。受熱部４５と充電用実装領域Ｒは、２次電池５の下端を越えた位置まで連出されている。また、この実施例では、熱遮断部５７に一群の熱遮断穴５８を前後に貫通する状態で設けて、当該熱遮断穴５８を熱遮断構造とした。熱遮断穴５８の一群は、上下一対の４個の直線列の間に３個の直線列を配置して、熱伝導通路がジグザグになるようにした。
(Embodiment 3) FIGS. 9 and 10 show a small electric device (beauty equipment) according to Embodiment 3 of the present invention in which the joint structure between the battery charging IC 33 and the heat sink 9 is changed. In the third embodiment, the heat receiving portion 45 of the heat sink 9 and the charging mounting area R of the control board 6 are extended to the lower end of the main body case 1, and the battery charging IC 33 mounted in the charging mounting area R is connected to the lower end of the heat receiving portion 45. Closely bonded. The heat receiving portion 45 and the charging mounting region R are continuously extended to a position beyond the lower end of the secondary battery 5. In addition, in this embodiment, a group of heat blocking holes 58 are provided in the heat blocking portion 57 in a state of penetrating in the front-rear direction, and the heat blocking holes 58 have a heat blocking structure. In the group of heat blocking holes 58, three linear rows are arranged between a pair of upper and lower four linear rows so that the heat conduction passages are zigzag.
実施例３の接合構造では、ヒートシンク９の受熱部４５を本体ケース１の下端寄りにまで連出するだけの単純な構造のみで、受熱部４５の放熱面積を大きくして、その分だけ受熱部４５の放熱熱量を向上し、電池充電ＩＣ３３の温度上昇を抑止できる。従って、２次電池５が繰返し充電される場合でも、電池充電ＩＣ３３が高温に晒されて、充電制御機能が劣化するのを効果的に防止して、２次電池５の充電を効率良く行うことができる。また、電池充電ＩＣ３３を受熱部４５の下端寄りに密着接合するので、放熱部４４から電池充電ＩＣ３３に至る熱伝導経路長を大きくすることができ、その分だけ放熱部４４から電池充電ＩＣ３３へ伝導する熱量を減少できる。さらに、熱遮断部５７における熱伝導通路をジグザグに設けたため、放熱部４４から電池充電ＩＣ３３への熱移動を阻害できる利点もある。
In the joint structure of the third embodiment, only the simple structure in which the heat receiving portion 45 of the heat sink 9 is continuously extended to the lower end of the main body case 1 has a large heat radiating area of the heat receiving portion 45, and the heat receiving portion is correspondingly increased. The amount of heat radiated by 45 can be improved, and the temperature rise of the battery charging IC 33 can be suppressed. Therefore, even when the secondary battery 5 is repeatedly charged, it is possible to effectively prevent the charge control function from being deteriorated by exposing the battery charging IC 33 to a high temperature and to efficiently charge the secondary battery 5. You can Further, since the battery charging IC 33 is closely bonded to the lower end of the heat receiving portion 45, the heat conduction path length from the heat radiating portion 44 to the battery charging IC 33 can be increased, and the heat radiating portion 44 conducts heat to the battery charging IC 33 accordingly. The amount of heat generated can be reduced. Furthermore, since the heat conducting passages in the heat cutoff portion 57 are provided in a zigzag manner, there is an advantage that heat transfer from the heat radiation portion 44 to the battery charging IC 33 can be obstructed.
（実施例４） 図１１および図１２に、電池充電ＩＣ３３とヒートシンク９の接合構造を変更した本発明の実施例４に係る小型電気機器（美容器具）を示す。実施例４では、本体ケース１の下端寄りに位置する制御基板６に縦長のスリット状の切欠７９を形成し、この切欠７９に沿って制御基板６の厚み方向へ弾性変形可能な充電用実装領域Ｒを形成した。また、充電用実装領域Ｒに充電回路３２と電池充電ＩＣ３３を配置し、電池充電ＩＣ３３を充電用実装領域Ｒの下端側に位置させるようにした。制御基板６を前ケース１ａの内部に固定し、ヒートシンク９を本体ケース１の内部に組んだ状態では、図１２に示すように、電池充電ＩＣ３３が受熱部４５で伝熱シート５３を介して押圧されるので、充電用実装領域Ｒが弾性変形する。
Fourth Embodiment FIGS. 11 and 12 show a small electric device (beauty equipment) according to a fourth embodiment of the present invention in which the joint structure of the battery charging IC 33 and the heat sink 9 is changed. In the fourth embodiment, a vertically elongated slit-shaped notch 79 is formed in the control board 6 located near the lower end of the main body case 1, and the charging mounting area is elastically deformable in the thickness direction of the control board 6 along the notch 79. R was formed. Further, the charging circuit 32 and the battery charging IC 33 are arranged in the charging mounting area R, and the battery charging IC 33 is positioned at the lower end side of the charging mounting area R. In a state where the control board 6 is fixed inside the front case 1a and the heat sink 9 is assembled inside the main body case 1, as shown in FIG. 12, the battery charging IC 33 is pressed by the heat receiving portion 45 via the heat transfer sheet 53. As a result, the charging mounting region R is elastically deformed.
実施例４の接合構造では、電池充電ＩＣ３３が充電用実装領域Ｒの基板の弾性力で、ヒートシンク９の受熱部４５に密着されるので、電池充電ＩＣ３３の熱をさらに効果的に受熱部４５へ伝導することができる。また、充電用実装領域Ｒを受熱部４５に締結するためのビス５４やディスタンスカラー５５を省略できる分だけ接合構造のコストを削減できる。
In the joining structure of the fourth embodiment, the battery charging IC 33 is brought into close contact with the heat receiving portion 45 of the heat sink 9 by the elastic force of the substrate in the charging mounting region R, so that the heat of the battery charging IC 33 is more effectively transferred to the heat receiving portion 45. Can be conducted. Further, the cost of the joining structure can be reduced by the amount that the screws 54 and the distance collars 55 for fastening the charging mounting region R to the heat receiving portion 45 can be omitted.
（実施例５） 図１３に、電池充電ＩＣ３３とヒートシンク９の接合構造を変更した本発明の実施例５に係る小型電気機器（美容器具）を示す。実施例５では、本体ケース１の下端寄りに位置する制御基板６に上下一対の横長のスリット状の切欠７９を形成し、この切欠７９の間を充電用実装領域Ｒとして、同領域Ｒの受熱部４５との対向面の先端寄りに電池充電ＩＣ３３を配置した。充電用実装領域Ｒは、実施例４の充電用実装領域Ｒと同様に、制御基板６の厚み方向へ弾性変形可能であり、電池充電ＩＣ３３を充電用実装領域Ｒの基板の弾性力で、受熱部４５に密着付勢する。充電回路３２は、下側の切欠７９より下方の基板に配置されている。
Fifth Embodiment FIG. 13 shows a small electric device (beauty equipment) according to a fifth embodiment of the present invention in which the joint structure between the battery charging IC 33 and the heat sink 9 is changed. In the fifth embodiment, a pair of vertically elongated slit-shaped notches 79 are formed in the control board 6 located near the lower end of the main body case 1, and a space between the notches 79 is used as a charging mounting region R to receive heat from the region R. The battery charging IC 33 is arranged near the tip of the surface facing the portion 45. The charging mounting area R is elastically deformable in the thickness direction of the control board 6 like the charging mounting area R of the fourth embodiment, and the battery charging IC 33 receives heat by the elastic force of the board of the charging mounting area R. The portion 45 is biased in close contact. The charging circuit 32 is arranged on the substrate below the lower cutout 79.
実施例５の接合構造によれば、実施例４の接合構造と同様に、充電用実装領域Ｒの基板の弾性力で、電池充電ＩＣ３３が受熱部４５に密着付勢されるので、電池充電ＩＣ３３の熱をさらに効果的に受熱部４５へ伝導することができる。また、充電用実装領域Ｒを受熱部４５に締結するためのビス５４やディスタンスカラー５５を省略できる分だけ接合構造のコストを削減できる。
According to the joint structure of the fifth embodiment, as in the joint structure of the fourth embodiment, the battery charging IC 33 is closely urged to the heat receiving portion 45 by the elastic force of the substrate in the charging mounting region R. The heat can be more effectively conducted to the heat receiving portion 45. Further, the cost of the joining structure can be reduced by the amount that the screws 54 and the distance collars 55 for fastening the charging mounting region R to the heat receiving portion 45 can be omitted.
（実施例６） 図１４および図１５に、電池充電ＩＣ３３とヒートシンク９の接合構造を変更した本発明の実施例６に係る小型電気機器（美容器具）を示す。実施例６では、制御基板６の下部の充電用実装領域Ｒに、充電回路３２と電池充電ＩＣ３３を配置した。また、放熱部４４の下部一側に上下寸法が小さな受熱部４５と熱遮断部５７を設け、電池充電ＩＣ３３と受熱部４５を上下に長い銅製の伝熱具８０で接続して、電池充電ＩＣ３３の熱を伝熱具８０で受熱部４５に伝導するようにした。帯板状の伝熱具８０の上端はビス８１で受熱部４５に締結されており、伝熱具８０の下部はビス５４とナット８２で制御基板６に締結されている。伝熱具８０の厚みは、受熱部４５の前後厚みより薄く設定されており、伝熱具８０の左右幅は、受熱部４５の左右幅より小さく設定されている。また、熱遮断部５７の前面に、スリット状の熱遮断溝５８を形成して、当該熱遮断溝５８を熱遮断構造とした。
(Sixth Embodiment) FIGS. 14 and 15 show a small electric device (beauty equipment) according to a sixth embodiment of the present invention in which the joint structure between the battery charging IC 33 and the heat sink 9 is changed. In the sixth embodiment, the charging circuit 32 and the battery charging IC 33 are arranged in the charging mounting region R below the control board 6. Further, a heat receiving portion 45 and a heat shield portion 57 having small vertical dimensions are provided on one side of the lower portion of the heat radiating portion 44, and the battery charging IC 33 and the heat receiving portion 45 are connected by a long and vertically long copper heat transfer tool 80. The heat is transferred to the heat receiving portion 45 by the heat transfer tool 80. The upper end of the band-shaped heat transfer tool 80 is fastened to the heat receiving portion 45 with a screw 81, and the lower part of the heat transfer tool 80 is fastened to the control board 6 with a screw 54 and a nut 82. The thickness of the heat transfer tool 80 is set thinner than the front-rear thickness of the heat receiving section 45, and the left-right width of the heat transfer tool 80 is set smaller than the left-right width of the heat receiving section 45. Further, a slit-shaped heat blocking groove 58 is formed on the front surface of the heat blocking portion 57, and the heat blocking groove 58 has a heat blocking structure.
実施例６の接合構造によれば、電池充電ＩＣ３３の熱を伝熱具８０で受熱部４５へ伝導できるので、２次電池５が繰返し充電される場合でも、電池充電ＩＣ３３の機能が劣化するのを防止して、２次電池５の充電を効率良く行うことができる。また、伝熱具８０の厚みを受熱部４５の前後厚みより薄く設定したので、受熱部４５が充電用実装領域Ｒにまで連出されている場合に比べて、ヒートシンク９の重量を小さくでき、その分だけ持重りのしない美容器具を提供できる。
According to the joint structure of the sixth embodiment, the heat of the battery charging IC 33 can be conducted to the heat receiving portion 45 by the heat transfer tool 80, so that the function of the battery charging IC 33 is deteriorated even when the secondary battery 5 is repeatedly charged. And the secondary battery 5 can be charged efficiently. Further, since the thickness of the heat transfer tool 80 is set to be thinner than the front-rear thickness of the heat receiving portion 45, the weight of the heat sink 9 can be reduced as compared with the case where the heat receiving portion 45 is continuously extended to the charging mounting region R, It is possible to provide beauty equipment that does not carry weight.
実施例で説明した制御基板６は、ガラス系の絶縁基材で形成することが多いが、必要があれば、アルミニウム板材の表面に絶縁層と銅の配線層を形成した熱伝導性に優れた金属基板や、さらに放熱特性が大きなセラミック基板で形成することができる。位置決め凹部５０および位置決めリブ５１の断面形状はＶ字状に形成する必要はなく、矩形や半円形など任意の形状に形成することができる。また、締結体５４はビスである必要はなく、ボルトやリベットであってもよい。本発明は美容器具以外に、熱電変換素子を備えた温熱治療器（小型電気機器）に適用することができる。
The control board 6 described in the embodiment is often formed of a glass-based insulating base material, but if necessary, an insulating layer and a copper wiring layer are formed on the surface of an aluminum plate material, which has excellent thermal conductivity. It can be formed of a metal substrate or a ceramic substrate having a large heat dissipation characteristic. The cross-sectional shape of the positioning recess 50 and the positioning rib 51 does not have to be V-shaped, but can be any shape such as rectangular or semi-circular. Further, the fastening body 54 need not be a screw, and may be a bolt or a rivet. INDUSTRIAL APPLICABILITY The present invention can be applied to a thermotherapy device (small electric device) including a thermoelectric conversion element, in addition to a beauty device.
