JPH0788009A - Hairdryer with moisture sensor - Google Patents

Abstract

PURPOSE:To attain a longer service life of the battery for a moisture sensor circuit of a hairdryer. CONSTITUTION:A photocoupler f3 comprises a light emitting diode LED driven by a driving signal output from a control circuit 7 when the power source placed on the B side of a hairdryer proper is switched on, a battery power source 4 housed in an attachment A and a phototransistor Q1 which is placed before a moisture sensor circuit 3 and turned on by light emitted from LED. The moisture sensor circuit 3 is activated when power is supplied from the battery power source 4 via the phototransistor Q1 of the photocoupler f3 which is interlocked with the power source on the B side of the hairdryer for switch-on. When the attachment A is removed from the hairdryer, the power from the battery power source 4 for the moisture sensor circuit 3 is cut off because the photocoupler f3 is placed on the B side of the hairdryer.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hair dryer having a moisture sensor.

[0002]

2. Description of the Related Art Hair dryers are commercially available that can dry hair while brushing it.

[0003]

In the above hair dryer, since the dryness of the hair is judged by the user in the process of drying the hair, the hair may be overdried and the hair may be damaged. Therefore, in the hair drying process,
Providing a hair dryer with a moisture sensor that can prevent overdrying of the hair by providing a moisture sensor circuit to detect the moisture content of the hair and notifying it according to the detected moisture content, and drying the hair optimally Has been done.

This hair dryer with a moisture sensor has a moisture sensor circuit driven by a battery power source and a circuit using a commercial power source so that the moisture sensor electrode does not receive an electric shock even if the hair and the human body come into contact with the moisture sensor electrode. Insulated structure. However, in this battery drive system, the battery voltage may drop and the hair dryer with a moisture sensor may be used without being aware of the malfunction.

The present invention has been made in view of the above points, and an object of the present invention is to provide a hair dryer with a moisture sensor capable of extending the life of the battery power source of the moisture sensor circuit. And providing claims 4 to
It is an object of the seventh invention to provide a hair dryer that can inform the user of the battery life.

[0006]

In order to achieve the above-mentioned object, the invention of claim 1 internally includes a hair dryer main body and a moisture sensor circuit which is insulated from the hair dryer main body side circuit and uses a battery power source as a power source. It has an attachment that is detachably attached to the hair dryer body, and in a hair dryer with a moisture sensor that sends the detection signal of the moisture sensor circuit to the hair dryer body side, works in conjunction with the on / off operation of the power switch of the hair dryer body. In addition to turning on / off the battery power source of the moisture sensor circuit, an opening / closing means is provided for turning off the battery power source when the attachment comes off the hair dryer.

The invention of claim 2 is a hair dryer main body,
It has a moisture sensor circuit inside which is insulated from the hair dryer body side circuit and uses battery power as a power source, and has an attachment that is detachably attached to the hair dryer body, and the detection signal of the moisture sensor circuit is sent to the hair dryer body. In the hair dryer with a moisture sensor to be sent to the side, the hair dryer body is equipped with a moisture sensor mode changeover switch that switches between control by moisture detection of the moisture sensor circuit and manual control. It is designed to work together.

The invention of claim 3 is a hair dryer body,
It has a moisture sensor circuit inside which is insulated from the hair dryer main circuit and uses battery power as a power source, and has an attachment that is detachably attached to the hair dryer main body, and the detection signal of the moisture sensor circuit is sent to the hair dryer main body. In the hair dryer with a moisture sensor that is sent to the side, the moisture sensor circuit is configured with an oscillation circuit that changes the frequency according to the change in the capacitance between the moisture sensor electrodes, and the capacitance between the moisture sensor electrodes increases. There is provided means for turning off the battery-driven photocoupler interposed between the output end of the moisture sensor circuit and the hair dryer body side circuit when the oscillation of the moisture sensor circuit is stopped.

The invention of claim 4 is a hair dryer body,
It has a moisture sensor circuit inside which is insulated from the hair dryer main circuit and uses battery power as a power source, and has an attachment that is detachably attached to the hair dryer main body, and the detection signal of the moisture sensor circuit is sent to the hair dryer main body. In the hair dryer with a moisture sensor to be sent to the side, a voltage detector that detects the voltage of the battery power supply is provided insulated from the hair dryer main circuit, and the hair dryer main circuit keeps the battery voltage below a certain level by the detection signal of the voltage detector. It is provided with means for giving a notification when it is detected that

According to the invention of claim 5, a hair dryer body,
It has a moisture sensor circuit inside which is insulated from the hair dryer main circuit and uses battery power as a power source, and has an attachment that is detachably attached to the hair dryer main body, and the detection signal of the moisture sensor circuit is sent to the hair dryer main body. In the hair dryer with a moisture sensor that is sent to the side, a voltage detector that detects the voltage of the battery power supply is provided insulated from the circuit of the hair dryer body side, and the detection signal of the voltage detector when the battery voltage drops below a certain level Means for stopping the operation of the moisture sensor circuit is provided, and the hair dryer main body side circuit is provided with means for detecting the operation stop of the moisture sensor circuit and giving a notification.

According to a sixth aspect of the present invention, there is provided a hair dryer body,
It has a moisture sensor circuit inside which is insulated from the hair dryer main circuit and uses battery power as a power source, and has an attachment that is detachably attached to the hair dryer main body, and the detection signal of the moisture sensor circuit is sent to the hair dryer main body. In the hair dryer with a moisture sensor that is sent to the side, a moisture sensor circuit is configured with an oscillation circuit that changes the frequency according to the change in the capacitance between the moisture sensor electrodes, and the battery voltage in the hair dryer body side circuit is below a certain level. It is provided with means for detecting that the oscillation frequency of the moisture sensor circuit becomes equal to or lower than a predetermined frequency and giving an alarm.

The invention of claim 7 is a hair dryer main body,
It has a moisture sensor circuit inside which is insulated from the hair dryer main circuit and uses battery power as a power source, and has an attachment that is detachably attached to the hair dryer main body, and the detection signal of the moisture sensor circuit is sent to the hair dryer main body. When the voltage of the battery power supply falls below a certain level in the hair dryer with a moisture sensor that is sent to the side, the output of the battery-powered photocoupler interposed between the output end of the moisture sensor circuit and the hair dryer body side circuit is above a certain level. The hair dryer body side circuit is provided with means for detecting and notifying that

[0013]

According to the invention of claim 1, the battery power of the moisture sensor circuit is turned on / off in conjunction with the on / off operation of the power switch of the hair dryer main body, and the battery power is turned on when the attachment is detached from the hair dryer. Since it has an opening and closing means to turn off, it is possible to prevent battery power consumption by removing the attachment from the hair dryer body, and when the attachment is attached to the hair dryer body, as long as the hair dryer body power switch is off The consumption of can be prevented.

According to the second aspect of the present invention, the hair dryer main body is provided with a moisture sensor mode changeover switch for switching between control by moisture detection of the moisture sensor circuit and manual control, and the opening / closing means of the moisture sensor circuit is the moisture sensor mode changeover switch. Since it was made to interlock with the switching of
By removing the attachment, it is possible to prevent the consumption of battery power, and also to prevent the consumption of battery power when using in manual mode.

According to the third aspect of the present invention, the moisture sensor circuit is configured by the oscillation circuit that changes the frequency according to the change in the capacitance between the moisture sensor electrodes, and the capacitance between the moisture sensor electrodes becomes large. When the oscillation of the moisture sensor circuit is stopped due to this, a means for turning off the battery-powered photocoupler interposed between the output end of the moisture sensor circuit and the hair dryer body side circuit is provided. It is possible to eliminate wasteful consumption of battery power when the moisture sensor circuit does not operate normally due to an increase in electric capacity.

According to the fourth aspect of the present invention, a voltage detector for detecting the voltage of the battery power source is provided so as to be insulated from the circuit of the main body of the hair dryer, and the circuit of the main body of the hair dryer is provided with a battery voltage based on a detection signal of the voltage detector. Since it is equipped with means to notify when the battery voltage drops below a certain level, it is possible to notify the user of the battery voltage drop, and prevent use without noticing the malfunction of the moisture sensor circuit due to the battery voltage drop. be able to.

According to the fifth, sixth and seventh aspects of the present invention, the user can be informed of the battery voltage drop as in the case of the fourth aspect, and the moisture sensor circuit malfunctions due to the battery voltage drop. It is possible to prevent unknowing use.

[0018]

Embodiments of the present invention will be described below with reference to the drawings. An embodiment of the present invention will be described with reference to FIGS.
FIG. 2 shows the entire electric circuit of the hair dryer with a moisture sensor, which is partially omitted. In FIG. 2, the circuit inside the attachment A is driven by the battery power source 4, and the circuit inside the main body B of the hair dryer is driven by a commercial power source. The circuit inside the attachment A and the circuit inside the hair dryer body B are insulated and separated by photocouplers f ₁ and f ₂ and a photocoupler f ₃ in FIG. 1 which will be described later.

The circuit inside the attachment A is a moisture sensor circuit 3 including an oscillation circuit for generating an oscillation signal having a frequency corresponding to the moisture content of the hair sandwiched between the moisture sensor electrodes 1 and 2.
And a voltage detector 5 for detecting the voltage of the battery power source 4, and the oscillation output of the moisture sensor circuit 3 is sent to the circuit on the hair dryer body B side via the photocoupler f ₁ . Similarly, the detection output of the voltage detector 5 is also sent to the circuit on the hair dryer body B side via the photocoupler f ₂ .

The circuit on the side of the hair dryer main body B includes a comparator CP for converting the oscillation output of the moisture sensor circuit 3 sent via the photocoupler f ₁ into a rectangular pulse signal of a predetermined level, and a comparator CP from this comparator CP. A frequency-voltage conversion circuit (hereinafter referred to as an FV conversion circuit) 6 that converts the frequency of the output pulse signal into a voltage;
The output of the conversion circuit 6 and the detection output of the voltage detector 5 sent through the photocoupler f ₂ are taken in, and the speed of the blower motor (not shown) of the hair dryer and the heat generation of the heater (not shown) are taken. And a control circuit 7 for controlling the air volume and the air temperature and for notifying the battery life.
The F-V conversion circuit 6 converts the input signal into a higher voltage as the frequency is higher, and outputs a voltage according to the input frequency to the control circuit 7.

The circuit of FIG. 1 is a battery power source 4 used in this embodiment.
Shows a circuit switching means for turning on or off the, switching means is composed of a photocoupler f _3, the light emitting diode of the photocoupler f ₃ by the drive signal output from the control circuit 7 during on of the power switch of the hair dryer body B side When the LED is driven and emits light, the battery power source 4 and the moisture sensor circuit 3
The phototransistor Q ₁ inserted between and turns on the power supply to the moisture sensor circuit 3, and the battery power source 4 operates in conjunction with the on / off operation of the power switch on the hair dryer body B side. The energization of is turned on and off.

In the circuit of FIG. 1, the attachment A is detached from the hair dryer body B by providing the control circuit 7 which is a circuit on the hair dryer body B side and the photo coupler f ₃ which is an opening / closing means on the hair dryer body B side. At that time, the battery power source 4 can be turned off. Here, the on / off of the battery power source 4 may be interlocked with the switching of the moisture sensor mode switch (not shown) provided in the hair dryer main body B. That is, the moisture sensor mode switch for switching between the moisture sensor mode for controlling the air volume and the air temperature by using the detection signal of the moisture sensor circuit 3 and the manual mode for obtaining the air volume and the air temperature according to the user's preference by the manual operation. And the opening / closing means for turning on / off the energization of the battery power source 4 so that the power supply to the moisture sensor circuit 3 by the battery power source 4 is turned off when the moisture sensor mode switch is not switched to the moisture sensor mode side. Of course, also in this case, when the attachment 2 is removed from the hair dryer main body B, the power supply by the battery power supply 4 is turned off.

Further, instead of the photocoupler f ₃ , a microswitch MS may be used as shown in FIG. 3 to interlock with the power switch SW (or moisture sensor mode switch) on the hair dryer body B side. In this case, as shown in FIG. 3, by providing a drive rod 8 which moves up and down in conjunction with the operation of the power switch SW (or moisture sensor mode switch) of the hair dryer main body B, the micro switch MS is driven to open and close. .

By the way, in the circuit shown in FIG. 2, water adheres between the electrodes 1 and 2 of the moisture sensor, and the oscillating operation of the moisture sensor circuit 3 is stopped as the capacitance between the electrodes 1 and 2 increases. when, that is, when the output of the moisture sensor circuit 3 becomes a constant "H" level, no emission current flows from the battery power source 4 to the light emitting diode of the photocoupler f _1, as the photocoupler f ₁ is turned off Has become. That is, it is possible to suppress the consumption of the battery power source 4 when water adheres between the electrodes 1 and 2.

In FIG. 2, the voltage detector 5, the photocoupler f ₂ and the control circuit 7 in the frame X detect the voltage of the battery power source 4 and notify the life of the battery power source 4 by detecting the battery life. Constitutes a means. As the voltage detector 5, a commercially available reset IC used for a microcomputer is used, and when the voltage of the battery power source 4 falls below a certain level, the output is set to “H” and the photocoupler f connected to the output end is used.
Stop the light emitting current of the light emitting diode of ₂ and photo coupler f
Turn off ₂ . The control circuit 7 determines that the voltage of the battery power source 4 has dropped below a certain level due to the output of the photocoupler f ₂ when it is off, and the life has expired. The control circuit 7 drives the notification means 9 including a buzzer or a light emitting diode to inform the user. The life of the battery power source 4 is notified.

As a method of informing the battery life, as shown in FIG. 4, when the battery voltage of the battery power source 4 falls below a certain level, the output of the battery detector 5 causes the transistor Q ₂
May be turned off and the oscillation operation of the moisture sensor circuit 3 may be stopped to notify the control circuit 7 of the battery life, and the notifying means 9 may be operated by the control circuit 7 in the same manner as described above. In this case, it can be realized by stopping the power supply from the battery power source 4 to the moisture sensor circuit 3 by turning off the transistor Q ₂ when the voltage of the battery power source 4 drops below a certain level. A battery power switch (not shown) may be turned off instead of the transistor Q ₂ .
Further, the oscillation operation of the moisture sensor circuit 3 may be directly controlled and stopped.

Further, in the circuit of FIG. 2, the waveform of the oscillation output of the moisture sensor circuit 3 is shaped into a square wave pulse signal by the comparator C ₁ . Therefore, when the battery voltage decreases, the light emitting current of the light emitting diode of the photocoupler f ₁ decreases, the amount of light emission decreases, and the collector voltage when the phototransistor on the output side is on increases and exceeds the reference of the comparator C _1. As a result, the output of the comparator C ₁ is fixed to the “L” level. That is, since the input frequency becomes 0, the output of the FV conversion circuit 6 becomes 0.
Therefore, the control circuit 7 can detect the battery life, and the notifying means 9 can be operated in the same manner as described above.

[0028]

According to the first aspect of the invention, the battery power of the moisture sensor circuit is turned on / off in conjunction with the on / off operation of the power switch of the hair dryer body, and the battery power is turned on when the attachment is detached from the hair dryer. Since it has an opening and closing means to turn off, it is possible to prevent battery power consumption by removing the attachment from the hair dryer body, and when the attachment is attached to the hair dryer body, as long as the hair dryer body power switch is off The consumption of
As a result, the battery life can be extended.

According to the second aspect of the present invention, the hair dryer main body is provided with a moisture sensor mode changeover switch for switching between control by moisture detection of the moisture sensor circuit and manual control, and the opening / closing means of the moisture sensor circuit is changed over to the moisture sensor mode changeover switch. The battery power consumption can be prevented by removing the attachment, and the battery power consumption can be prevented even in the use in the manual mode. Can be strengthened.

According to the third aspect of the invention, the moisture sensor circuit is constituted by the oscillation circuit that changes the frequency according to the change in the capacitance between the moisture sensor electrodes, and the capacitance between the moisture sensor electrodes becomes large. When the oscillation of the moisture sensor circuit is stopped due to this, a means to turn off the battery-powered photocoupler interposed between the output end of the moisture sensor circuit and the hair dryer body side circuit is provided, so that moisture may adhere to the moisture sensor electrode. Therefore, it is possible to eliminate wasteful consumption of the battery power source when the capacitance increases and the moisture sensor circuit does not operate normally, and it is possible to further prolong the battery life.

According to the fourth aspect of the present invention, a voltage detector for detecting the voltage of the battery power source is provided so as to be insulated from the circuit of the main body of the hair dryer, and the circuit of the main body of the hair dryer is provided with the battery voltage by the detection signal of the voltage detector. Since it is equipped with means to notify when the battery voltage drops below a certain level, it is possible to notify the user of the battery voltage drop, and prevent use without noticing the malfunction of the moisture sensor circuit due to the battery voltage drop. As a result, the replacement of the battery can be promoted, and the generation of heat due to the over-discharge of the battery can be prevented.

According to a fifth aspect of the present invention, a voltage detector for detecting the voltage of the battery power source is provided insulated from the hair dryer body side circuit, and a detection signal of the voltage detector when the battery voltage drops below a certain level. Means to stop the operation of the moisture sensor circuit by means of, and the hair dryer body side circuit is provided with means for detecting the operation stop of the moisture sensor circuit and notifying it, so that the detection signal of the voltage detector is transmitted to the hair dryer body. Therefore, there is an effect that parts such as a photo coupler and a connector for the purpose can be omitted, the material cost can be reduced without losing the effect of the invention of claim 4, and the attachment and detachment of the attachment becomes easy.

According to a sixth aspect of the present invention, the moisture sensor circuit is constituted by an oscillation circuit that changes the frequency according to the change in the capacitance between the moisture sensor electrodes, and the battery voltage in the hair dryer main circuit is below a certain level. When the oscillating frequency of the moisture sensor circuit becomes lower than a predetermined frequency when it becomes low, the means for notifying is provided, so that the voltage detector for detecting the battery voltage becomes unnecessary, and the effects of claims 4 and 5 are lost. Without this, it is possible to reduce battery consumption and prolong battery life.

According to a seventh aspect of the present invention, when the voltage of the battery power source falls below a certain level, the output of the battery-operated photocoupler interposed between the output end of the moisture sensor circuit and the hair dryer body side circuit is at a predetermined level. Since the hair dryer main body side circuit is provided with a means for detecting and notifying the above, the effect of the inventions of claims 4, 5 and 6 is not ignored, and the difference in environmental humidity of the water electrode is ignored for detection. The effect is that the reference voltage can be set.

[Brief description of drawings]

FIG. 1 is a circuit diagram showing an example of an opening / closing means for a battery power supply according to an embodiment of the present invention.

FIG. 2 is a circuit configuration diagram in which a part of the same is omitted.

FIG. 3 is a configuration diagram showing an example of an interlocking relationship between the opening / closing means on the attachment side and the power switch on the hair dry body side in the above.

FIG. 4 is a circuit diagram for stopping the oscillation of the moisture sensor circuit by the battery voltage device of the above.

[Explanation of symbols]

A Attachment B Hair Dryer body f ₃ photocoupler Q ₁ phototransistor LED light-emitting diode 3 the moisture sensor circuit 4 battery power supply 7 control circuit

─────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] December 28, 1993

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] Claim 1

[Correction method] Change

[Correction content]

[Procedure Amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0006

[Correction method] Change

[Correction content]

[0006]

In order to achieve the above-mentioned object, the invention of claim 1 internally includes a hair dryer main body and a moisture sensor circuit which is insulated from the hair dryer main body side circuit and uses a battery power source as a power source. It has an attachment that is detachably attached to the hair dryer body, and in a hair dryer with a moisture sensor that sends the detection signal of the moisture sensor circuit to the hair dryer body side, works in conjunction with the on / off operation of the power switch of the hair dryer body. as well as on / off battery power of the moisture sensor circuit Te, in which the attachment is provided with a switching means for turning off the battery power source to come to have deviated from the hair dryer.

[Procedure 3]

[Document name to be amended] Statement

[Correction target item name] 0014

[Correction method] Change

[Correction content]

According to the second aspect of the present invention, the hair dryer main body is provided with a moisture sensor mode changeover switch for switching between control by moisture detection of the moisture sensor circuit and manual control, and the opening / closing means of the moisture sensor circuit is the moisture sensor mode changeover switch. than was to be interlocked with switching,
It is possible to prevent the consumption of batteries power when used in man mode.

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0020

[Correction method] Change

[Correction content]

The hair dryer main body B side circuit includes a comparator CP for converting the oscillation output of the moisture sensor circuit 3 transmitted through the photocoupler f ₁ on the pulse signal rectangular shape, is output from the comparator CP A frequency-voltage conversion circuit (hereinafter referred to as an FV conversion circuit) 6 that converts the frequency of the pulse signal into a voltage, and an output of the FV conversion circuit 6 and voltage detection sent through the photocoupler f _2. The detection output of the device 5 is taken in to control the speed of the blower motor (not shown) of the hair dryer and the heat generation of the heater (not shown) to control the air volume and temperature, and to inform the battery life. And a control circuit 7 for The F-V conversion circuit 6 converts the input signal into a higher voltage as the frequency is higher, and outputs a voltage according to the input frequency to the control circuit 7.

[Procedure Amendment 5]

[Document name to be amended] Statement

[Correction target item name] 0026

[Correction method] Change

[Correction content]

[0026] Note that the transistor Q ₂ when the battery voltage of the battery power source 4 as shown in FIG. 4 becomes below a certain level as a method, the output of the voltage detector 5 for notifying the battery life
May be turned off and the oscillation operation of the moisture sensor circuit 3 may be stopped to notify the control circuit 7 of the battery life, and the notifying means 9 may be operated by the control circuit 7 in the same manner as described above. In this case, it can be realized by stopping the power supply from the battery power source 4 to the moisture sensor circuit 3 by turning off the transistor Q ₂ when the voltage of the battery power source 4 drops below a certain level . A battery power switch (not shown) may be turned off instead of the transistor Q ₂ . Further, the oscillation operation of the moisture sensor circuit 3 may be directly controlled and stopped.

[Procedure correction 6]

[Document name to be amended] Statement

[Name of item to be corrected] 0027

[Correction method] Change

[Correction content]

Further, in the circuit of FIG. 2, the waveform of the oscillation output of the moisture sensor circuit 3 is shaped into a square wave pulse signal by the comparator C ₁ . Therefore light emission current collector voltage rises and when turned on to the phototransistor of the light emission amount is small is output side reduction of the comparator C ₁ reference light emitting diode of the photocoupler f ₁ during lowering of the battery voltage (the non-inverting The voltage exceeds the ( input terminal) voltage , and as a result, the output of the comparator C ₁ is fixed to the "L" level. That is, since the input frequency becomes 0, the output of the output of the FV conversion circuit 6 becomes 0, whereby the control circuit 7 detects the battery life and the notifying means 9 can be operated in the same manner as above.

[Procedure Amendment 7]

[Document name to be amended] Statement

[Correction target item name] 0028

[Correction method] Change

[Correction content]

[0028]

Effect of the Invention of claim 1 invention is to turn on / off the battery power supply of the moisture sensor circuit in conjunction with the ON / OFF operation of the power switch of the hair dryer body, battery can and the attachment is out of the hair dryer Since it has an opening / closing means to turn off the power, you can prevent battery power consumption by removing the attachment from the hair dryer main body, and as long as the attachment is attached to the hair dryer main body, as long as the power switch of the hair dryer main body is turned off. There is an effect that consumption of the battery power source can be prevented and, as a result, the battery life can be extended.

[Procedure Amendment 8]

[Document name to be amended] Statement

[Name of item to be corrected] 0029

[Correction method] Change

[Correction content]

According to a second aspect of the present invention, the hair dryer main body is provided with a moisture sensor mode changeover switch for switching between control by moisture detection of the moisture sensor circuit and manual control, and the opening / closing means of the moisture sensor circuit is changed over by the moisture sensor mode changeover switch. than was to be interlocked with, it is possible to prevent the consumption of batteries supply during use between New <br/> al mode, it is possible to further enhance the effect of the invention of claim 1.

[Procedure Amendment 9]

[Document name to be amended] Statement

[Correction target item name] 0034

[Correction method] Change

[Correction content]

According to a seventh aspect of the present invention, when the voltage of the battery power source falls below a certain level, the output of the battery-operated photocoupler interposed between the output end of the moisture sensor circuit and the hair dryer body side circuit is at a predetermined level. Since the hair dryer body side circuit is provided with means for detecting and notifying the above situation, the difference in environmental humidity of the moisture sensor electrode can be ignored without losing the effects of the invention of claims 4, 5, and 6. Then, there is an effect that the reference voltage for detection can be set.

Claims (7)

[Claims] 1. A hair dryer main body, and an attachment, which is insulated from the hair dryer main body side circuit, has therein a moisture sensor circuit powered by a battery power source, and is detachably attached to the hair dryer main body, In a hair dryer with a moisture sensor that sends the detection signal of the moisture sensor circuit to the body of the hair dryer, the battery power of the moisture sensor circuit is turned on / off in conjunction with the on / off operation of the power switch of the hair dryer body, and the attachment from the hair dryer. A hair dryer with a moisture sensor, which is provided with an opening / closing means for turning off the battery power when the hair dryer comes off. 2. A hair dryer main body, and an attachment, which is insulated from the hair dryer main body side circuit, internally provided with a moisture sensor circuit using a battery power source as a power source, and detachably attached to the hair dryer main body, In a hair dryer with a moisture sensor that sends the detection signal of the moisture sensor circuit to the body of the hair dryer, the hair dryer body is equipped with a moisture sensor mode selection switch that switches between control by moisture detection of the moisture sensor circuit and manual control, and the opening and closing means of the moisture sensor circuit. A hair dryer with a moisture sensor, characterized in that it is linked with the switching of the moisture sensor mode selection switch. 3. A hair dryer main body, and an attachment, which is insulated from the hair dryer main body side circuit, has therein a moisture sensor circuit powered by a battery power source, and is detachably attached to the hair dryer main body, In a hair dryer with a moisture sensor that sends the detection signal of the moisture sensor circuit to the body of the hair dryer, the moisture sensor circuit is configured by an oscillation circuit that changes the frequency according to the change in the capacitance between the moisture sensor electrodes, When the oscillation of the moisture sensor circuit is stopped due to an increase in electrostatic capacity, a means for turning off the battery-powered photocoupler interposed between the output end of the moisture sensor circuit and the hair dryer body side circuit is provided. A hair dryer with a moisture sensor. 4. A hair dryer main body, and an attachment, which is insulated from the hair dryer main body side circuit, has therein a moisture sensor circuit powered by a battery power source, and is detachably attached to the hair dryer main body, In a hair dryer with a moisture sensor that sends the detection signal of the moisture sensor circuit to the main body of the hair dryer, a voltage detector that detects the voltage of the battery power supply is provided insulated from the circuit of the main body of the hair dryer. A hair dryer with a moisture sensor, comprising means for giving an alarm when the battery voltage is detected to drop below a certain level by the detection signal. 5. A hair dryer main body, and an attachment, which is insulated from the hair dryer main body side circuit, internally provided with a moisture sensor circuit powered by a battery power source, and detachably attached to the hair dryer main body, In a hair dryer with a moisture sensor that sends the detection signal of the moisture sensor circuit to the hair dryer main body side, a voltage detector that detects the voltage of the battery power supply is provided insulated from the hair dryer main body side circuit, and the battery voltage has dropped below a certain level. When the means for stopping the operation of the moisture sensor circuit is provided by the detection signal of the voltage detector at the time, and the hair dryer body side circuit is provided with means for detecting the stoppage of the operation of the moisture sensor circuit and issuing a notification. Hair dryer with sensor. 6. A hair dryer main body, and an attachment, which is insulated from the hair dryer main body side circuit, has therein a moisture sensor circuit powered by a battery power source, and is detachably attached to the hair dryer main body, In a hair dryer with a moisture sensor that sends the detection signal of the moisture sensor circuit to the body of the hair dryer, the moisture sensor circuit is configured with an oscillation circuit that changes the frequency according to the change in the capacitance between the moisture sensor electrodes. Is a hair dryer with a moisture sensor, comprising means for detecting when the oscillation frequency of the moisture sensor circuit falls below a predetermined frequency when the battery voltage falls below a certain level and giving a notification. 7. A hair dryer main body, and an attachment, which is insulated from the hair dryer main body side circuit, internally provided with a moisture sensor circuit using a battery power source as a power source, and detachably attached to the hair dryer main body, In a hair dryer with a moisture sensor that sends the detection signal of the moisture sensor circuit to the body side of the hair dryer, when the voltage of the battery power supply falls below a certain level, the battery drive that intervenes between the output end of the moisture sensor circuit and the hair dryer body side circuit A hair dryer with a moisture sensor, characterized in that the hair dryer body side circuit is provided with means for detecting and notifying that the output of the photo coupler is above a predetermined level.