JPH057508A - Hairbrush with moisture sensor - Google Patents

Abstract

PURPOSE:To do drying and setting most suitable for hair and to prevent the over- drying of the hair, by a method wherein the moisture rate of the hair is determined covering a wide range while the hair is being brushed, and a hair-drying process is classified in three large regions, corresponding to the moisture rate. CONSTITUTION:A detecting circuit N1 is provided in a bristle 2, detects a moisture rate through a moisture sensor 4, and consists of the moisture sensor 4, a transmitter 10, a transducing circuit 11 and an offset-compensating circuit 14. The detecting circuit 11 is a type of detecting an electrostatic capacity. A deciding means N5 consists of a first decision part N2 at which a signal is outputted when the output of the detecting circuit N1 is at a first level established as the criterion of the moisture rate, or higher; a second decision part N3 at which another signal is outputted when the output of the detecting circuit N1 is at a second level lower than the first level, or higher; and a third decision part N4 at which another signal is outputted when the output of the detecting circuit N1 is at a third level, or higher. In this way, when the moisture rate is at the first level or higher, a first notice is done, and when drying is advanced, a second notice is done, and thus a user is informed that the hair will be dried off in a short time and it is necessary to do hair-setting.

Description

Detailed Description of the Invention

[0001]

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

[0002]

2. Description of the Related Art As a method of indirectly measuring the moisture content of hair, a method of measuring the capacitance (dielectric constant) or electric resistance (dielectric loss) of hair is generally used. This utilizes the characteristic that the permittivity of water is larger than that of other substances and the dielectric loss is small. As a method for measuring the moisture content value of hair by this method, there is one disclosed in Japanese Utility Model Publication No. 57-112947, and one used in a hair dryer is disclosed in Japanese Utility Model Publication No. 63-095508. is there.
In these devices, an electrode is provided on an openable / closable probe, and the hair is sandwiched between the electrodes to measure the water content.

[0003]

However, in the method of measuring the moisture content value by sandwiching the hair, only the moisture content of the sandwiched portion can be measured, and the probe must be opened and closed each time when measuring a wide range. There is a problem that it needs to be moved, which is very troublesome and time consuming. Also, when measuring the moisture content of hair during drying, if it is measured at the same place,
Since that portion was sandwiched by the probes, the drying was delayed compared to other portions, and the correct moisture content could not be measured.

Further, in the case of drying while brushing in order to perform the drying more efficiently, the brushing had to be interrupted each time the moisture content was measured, which was very inconvenient. Therefore, the object of the present invention is to make it possible to easily and quickly measure the moisture content value of a wide range of hair while brushing the moisture content value of the hair, and to greatly measure the hair drying process according to the moisture content.
It is intended to provide a hair brush with a moisture sensor capable of performing an optimum drying setting while classifying the information into four areas and notifying it, and preventing overdrying.

[0005]

A hair brush with a moisture sensor according to claim 1 has a detection circuit for detecting the moisture content by a moisture sensor installed in the bristle, and the output of this detection circuit is used as a reference for the moisture content. It is composed of a first determination unit that outputs when the level is equal to or higher than the set first level, and a second determination unit that outputs when the output of the detection circuit is equal to or higher than a second level lower than the first level. A determination means, and the first
The first notification is performed in the first region above the first level by the outputs of the determination unit and the second determination unit, and the second notification is performed in the second region between the first level and the second level. In the third area below the second level, the notification means for performing the third notification is provided.

A hair brush with a moisture sensor according to claim 2 is
In claim 1, the first notification or the third notification is silenced. A hair brush with a moisture sensor according to a third aspect of the present invention is the hair brush according to the first aspect, further comprising: The third notification is provided in the area between the second level and the third level, and the fourth area below the third level is silent.

The hair brush with moisture sensor according to claim 4 is
In claim 1, the first level and the second level are made variable. A hair brush with a moisture sensor according to a fifth aspect has the dryer structure according to the first or fourth aspect, which blows out cool air when the output of the detection circuit is lower than the second level.

A hair brush with a moisture sensor according to claim 6 is
5. The dryer structure according to claim 1 or 4, which blows out warm air when the output of the detection circuit is equal to or higher than the second level, and the warm air has a second temperature higher than that of the first region. The wind temperature in the area is set low. Claim 7
The hair brush with a moisture sensor according to claim 1 or claim 4 has a dryer structure that blows out a predetermined amount of air when the output of the detection circuit is equal to or higher than the second level,
The air volume is set so that the air volume in the second region is smaller than the air volume in the first region.

A hair brush with a moisture sensor according to claim 8 is
In Claim 5 or 7, the air volume during the cold air is set to be equal to or less than the air volume of the warm air in the second region. The hair brush with a moisture sensor according to claim 9 is the hair brush according to claim 1 or 4, wherein the detection circuit sets an output of the moisture sensor in a state where hair does not hit the moisture sensor to a zero point, and It has an offset correction circuit for obtaining the water content from the output change amount.

A hair brush with a moisture sensor according to a tenth aspect of the present invention is the hair brush according to the ninth aspect, wherein the first determination unit is saturated beyond the dynamic range of the circuit in which the input of the offset correction circuit is set due to the fluctuation of the zero point. If it does, it is determined to be higher than the first level. A hair brush with a moisture sensor according to claim 11 is the hair brush according to claim 1 or 3, wherein each of the first determination unit to the third determination unit has a detection unit that detects a first level to a third level. However, the first determination unit to the third determination unit have expansion means for expanding the output of the detection signal of each detection means for a predetermined time, and the predetermined time is at a second level rather than the first level. Is shorter and the third level is shorter than the second level.

A hair brush with a moisture sensor according to a twelfth aspect is the hair brush with a moisture sensor according to the first aspect or the eleventh aspect, wherein the extending means of each of the first determining section and the second determining section is the notification means and the dryer structure. It is provided separately and has a longer length for the dryer structure than for the notification means. A hair brush with a moisture sensor according to a thirteenth aspect is the hair brush with a moisture sensor according to the first or fourth aspect, in which a melody or the like is notified in the first area of the detection circuit which is equal to or higher than the first level.

[0012]

According to the hair brush with a moisture sensor of the first aspect, the hair is washed, dried with a towel and then dried with a hair dryer while brushing the hair with a moisture sensor with a moisture sensor. In this case, when the moisture content of the hair is equal to or higher than the first level (about 20 to 25%), the first notification is given, and the drying progresses to the first level and the second level (about 1%).
When it is between 0% to 15%), the second notification is given to notify that the drying is almost completed and to set the hair.
When the moisture content of the hair falls below the second level, the third notification notifies the completion of drying to prevent overdrying. In this way, it is possible to easily and quickly measure the moisture content of a wide range of hair while brushing it, and since the hair drying process is roughly classified into three areas according to the moisture content, it is possible to perform an optimum drying set and prevent overdrying. .

According to the hair brush with a moisture sensor of claim 2, in addition to the function of claim 1, by making the first notification or the third notification silence in claim 1,
It is possible to omit the sound generation during use without lowering the notification effect. According to the hair brush with a moisture sensor of claim 3, in the claim 1, the output of the detection circuit is the second
Is between the third level and the third level lower than this level, and the third notification is given, and no sound is produced below the third level. Therefore, the third level (about 0 (5%) or less, it is possible to prevent the notification from continuing when brushing is not performed.

According to the hair brush with moisture sensor of claim 4, in the claim 1, the first level and the second level
Since the level is variable, the water content in the dry state can be changed according to the preference of the user in addition to the effect of the first aspect, so that it is possible to freely dry from moist drying. According to the hair brush with a moisture sensor of claim 5, in claim 1 or claim 4, a dryer structure for blowing cold air when the output of the detection circuit is lower than the second level is adopted. In addition to the effect of claim 4, overdrying can be prevented and the completion of drying can be notified by cold air.

A hair brush with a moisture sensor according to a sixth aspect of the present invention is the dryer structure according to the first or the fourth aspect, which blows warm air when the output of the detection circuit is equal to or higher than the second level. The warm air is set to have a lower air temperature in the second area than the air temperature in the first area.
Alternatively, in addition to the effect of claim 4, the drying power near the completion of drying can be reduced to prevent overdrying, and when the moisture content is low, the temperature of hair tends to be high, so that the user does not feel heat. .

According to the hair brush with a moisture sensor of claim 7, in the dryer structure according to claim 1 or 4, a predetermined air volume is blown out when the output of the detection circuit is equal to or higher than the second level. Since the air volume is set to be smaller in the second area than in the first area,
In addition to the effect of claim 1 or claim 4, the spread of the hair due to the wind can be suppressed, and the setting operation becomes easy.

According to the hair brush with a moisture sensor of claim 8, in claim 5 or claim 7, the amount of cold air is set to be equal to or less than the amount of warm air in the second region. In addition to the effect of claim 5 or claim 7, it is possible to prevent the hair from being disturbed by wind after the completion of the dry setting. According to the hair brush with moisture sensor of claim 9, in claim 1 or 4, the detection circuit sets the output of the moisture sensor in a state where the hair does not hit the moisture sensor as a zero point, and moisture with respect to this zero point. Since the offset correction circuit for obtaining the water content from the change amount of the output of the sensor is provided, in addition to the action of claim 1 or claim 4, when the output of the detection circuit changes due to the surrounding environment and changes with time, or the heat of the hair dryer. The moisture content can be accurately detected even when it changes due to.

According to the hair brush with a moisture sensor of the tenth aspect, in the ninth aspect, the first determination unit determines the dynamic range of the circuit to which the input of the offset correction circuit is set due to the change of the zero point. When it exceeds the saturation level, it is determined that the level is equal to or higher than the first level. Therefore, in addition to the effect of the ninth aspect, it is possible to prevent malfunction due to the output of the offset correction circuit becoming smaller than the actual level.

According to the hair brush with a moisture sensor of the eleventh aspect, in the first or third aspect, the first determining section to the third determining section detect the first level to the third level, respectively. Each of the first to third determination sections has a decompression means for decompressing the output of the detection signal of each detection means for a predetermined time, and the predetermined time from the first level. Also, since the one for the second level is short and the one for the third level is shorter than the second level, the period of time during which the hair is separated from the moisture sensor in the brushing operation is achieved in addition to the action of claim 1. Since the output of the detection circuit is discontinuous in a pulse shape because it exists, by setting the predetermined time of the extending means as described above, due to variations during measurement, low water content is obtained despite high water content. It is possible to prevent malfunction to determine that rate.

A hair brush with a moisture sensor according to a twelfth aspect of the present invention is the hair brush having a moisture sensor according to the first aspect or the eleventh aspect.
12. The determination unit and the second determination unit are respectively provided with the extension means separately from the notification means and the dryer structure, and the length for the dryer structure is longer than that for the notification means. In addition to the effect, it is possible to reduce the unpleasantness of the dryer wind caused by unnecessary repetition of hot and cold air and the amount of air flow, and to notify the user in real time as much as possible.

According to the hair brush with a moisture sensor of claim 13, in the claim 1 or 4, since the melody or the like is notified in the first region of the detection circuit above the first level, In addition to the effect of claim 1 or claim 4, the hair can be comfortably dried when it is wet.

[0022]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS. That is, in this hair brush with a moisture sensor, the bristle 2 of the hair brush 1 is planted on the bristle base 3 in FIGS. 3 and 4. A moisture sensor 4 is installed at a substantially central portion of the bristle base 3. Reference numeral 5 indicates a power switch.

In the moisture sensor 4, as shown in FIG. 5, a plurality of ground electrodes 8 and hot electrodes 9 are alternately arranged on a sensor base 7 made of an insulator in a direction perpendicular to the brushing direction. The ground electrodes 8 and the hot electrodes 9 are electrically connected to each other. Insulators 8b and 9b are provided on the tip side of both electrodes 8 and 9, and the tips are pointed so that hair can be easily introduced between both electrodes 8 and 9. Further, the distance between both electrodes 8 and 9 and the length of both electrodes 8 and 9 are such that substantially constant hair is introduced between electrodes 8 and 9 even if the amount of hair introduced by normal brushing changes. Is set to. Further, the electrodes 8 and 9 are made higher than the surface of the bristle base 3 by the sensor base 7, so that the hair can be surely introduced between the electrodes 8 and 9 even when the hair is brushed shallowly.

FIG. 1 is an electric circuit diagram and FIG. 2 is its timing chart. In FIG. 1, a detection circuit N ₁ detects the moisture content by a moisture sensor 4 installed in the bristle 2, and includes a moisture sensor 4, an oscillator 10, and a conversion circuit 11.
And an offset correction circuit 14. This detection circuit N ₁ is a system for detecting the electrostatic capacitance between the electrodes 8 and 9,
The capacitance of hair has a positive correlation with the moisture content. The capacitance between the electrodes 8 and 9 of the moisture sensor 4 constitutes a part of the oscillator 10, and an oscillation output having a frequency (negative correlation) according to the capacitance is obtained. This output is converted into a DC voltage output A by the frequency-voltage (FV) conversion circuit 11. This output A is changed by the offset correction circuit 14 including the peak hold circuit 12 and the differential amplifier circuit 13 when the moisture sensor 4 does not have hair (the zero point) changes due to environmental changes or changes over time. Also by detecting the amount of change from the zero point, a detection output B that is not affected by them can be obtained.

Judgment means N_FiveIs the detection circuit N₁Output is water
Appears when the level is equal to or higher than the first level set as the standard of rate.
First determination unit N that applies force₂And the detection circuit N₁The output is
Output when the second level is lower than the first level
Second determination unit N₃And the detection circuit N₁The output of the
Third determination unit N that outputs when the level is equal to or higher than 3_FourFrom
It will be. That is, the detection circuit N₁Output B is
Judgment unit N of 1₂First level detecting means for moisture content of hair
17 and the second determination unit N ₃Second
18, which is the level detection means of the
Determination unit N_FourWhich is the third level detecting means of
Input to the computer 19 and output at high levels above each level.
Obtain the outputs C, E, and G that are power. Where each detection
The level is set by the sensitivity changeover switch 16. Also
The fluctuation of the zero point of output A is large and the dynamic range of the circuit is large.
If the saturation exceeds the error, the offset correction circuit 14 outputs
Prevents malfunction due to less than actual force
In order to detect that output A is above a certain level,
The output A is input to the comparator 15. Comparator 15
And the output of the OR circuit 27 of the comparator 17 is the expansion means.
Input to a monostable multivibrator 28
Output that becomes high output for a predetermined time (several seconds to 10 seconds)
The output of the OR circuit 27 is input to the NOR circuit 29 and the output D
To get Further, the output E is a monostable multi-by which is an expansion means.
It is input to the blater 20 and the OR circuit 21, and the output F is obtained.
Similarly, the output G is a monostable multivibration which is a stretching means.
It is input to the output circuit 24 and the NOR circuit 25 to obtain the output H.

The notifying means N ₆ gives notification by the output of the judging means N ₅ . That is, the output F of the judging means N _{5 and} the output of the oscillator 22 (about 1 Hz) are AND circuit 23.
, And the output of the AND circuit 23 and the output H are input to the NOR circuit 26 to obtain the output I. The output D and the output I are input to the AND circuit 30 to obtain the output J.
Furthermore, output J and oscillator 31 (about 2 KHz) output is NAN
The buzzer 33 is driven by the output of the NAND circuit 32 which is input to the D circuit 32.

The timing chart of FIG. 2 shows the state when the hair is dried after washing the hair, and the operation will be described based on this. (A) to (j) show signal waveforms of outputs A to J in FIG. 1, respectively. At the initial stage when the power is turned on (the stage before time t ₀ ), since there is no hair between the electrodes 8 and 9 of the moisture sensor 4 and the capacitance between the electrodes 8 and 9 is small, the oscillation frequency of the oscillator 10 becomes high and the conversion is performed. The output A of the circuit 11 becomes a high voltage as shown in FIG. The output B of the offset correction circuit 14 has a low voltage as shown in FIG. Therefore, the outputs of the comparators 15 and 17 to 19 are all low voltage and the output J is also low voltage, and the buzzer 33 does not sound and is silent.

When the hair brush 1 is applied to the hair and brushed, wet hair is introduced between the electrodes 8 and 9, and at that moment (time t ₀ ), the capacitance between the electrodes 8 and 9 has a high moisture content. Becomes larger, the oscillation frequency of the oscillator 10 becomes lower, the output A of the conversion circuit 11 becomes a low voltage as shown in FIG. 9A, and the output B of the offset correction circuit 14 becomes a high voltage as shown in FIG. Becomes As a result, the outputs C ((c) in the figure), E ((e) in the figure) and G ((g) in the figure) become high voltage, but the output J becomes a low voltage as shown in (j) in the figure. Therefore, the buzzer 33 does not ring and remains silent.

The reason why the output A has the next highest voltage is that the hair brush 1 is separated from the hair after the brushing. Next, the brushing operation causes the hair to move between the electrodes 8 and 9 of the moisture content sensor 4. When introduced, a high water content is detected and the voltage becomes low. But monostable multivibrator 2
Even if the voltage is once lowered by the action of 8, even if the voltage is once lowered, the output J remains low, and the buzzer 33 remains silent.

As the hair dries, the output A gradually rises as shown in FIG. 4A and the output B increases as shown in FIG.
As described above, the detection output for each brushing gradually decreases, and eventually falls below the first level.
After a predetermined time (T ₁ ) from the last detection of the first level (time t ₁ ), the output D becomes a high voltage as shown in FIG. 6D, and at this time t ₂ , the output I becomes the AND circuit 30. And the oscillation signal of the oscillator 22 (about 1 Hz) is generated at the output J, and this and the oscillation signal of the oscillator 31 (about 2 KHz) are NA.
Since it is input to the ND circuit 32, the buzzer 33 causes the oscillator 22 to
Intermittent sound of the cycle is generated. This intermittent sound informs that the hair is almost dry and prompts the hair to be set.

Finally, the second level at which the output B falls below the second level when the hair dries is finally detected (t
₃ time points) and a predetermined time after (T ₂₎ after (time point t ₄₎
The output F becomes a low voltage and the output of the oscillator 22 does not pass through the AND circuit 23. However, since the output I is a high voltage, the output J becomes a high voltage and the buzzer 33 becomes a continuous sound. This continuous sound informs the completion of hair drying and prevents overdrying.

When the user stops the dryer and stops brushing, the output H becomes high after a predetermined time (T ₃ ) has passed since the third level was finally detected (at time t ₅ ) (at time t ₆ ). The voltage becomes a voltage, the output J becomes a low voltage as shown in (j) of the figure, the buzzer 33 stops, and the sound becomes silent. In this way, the user concentrates on the drying at the first level or above, knows that the completion of drying is near due to the intermittent sound between the first level and the second level, and sets the hair, and When the level of is known by the continuous sound, the drying is finished so as not to overdry. As a result, the dry state of the hair can be accurately known, and overdrying can be prevented without unevenness in drying. Further, the moisture content level at the time of completion of drying varies depending on the preference of the user, and therefore can be switched by the sensitivity changeover switch 16. The changeover switch 16 is a two-way interlocking switch to make the first level and the second level variable,
The third level can be the same. Then, by switching the changeover switch 16 to W ₁ , M ₁ and D ₁ , it is possible to switch from moist drying to firm drying. For example, the moisture content between the first level and the second level is W ₁
25 to 15%, M ₁ to 23 to 13%, D ₁ to 20 to ₁
0%

The change-over switch 16 may be a resistance changeover independent as shown in FIG. In that case first
Can be set independently for each level or all third levels. Further, it may be continuously variable by using a variable resistor. Also, the predetermined time (T _{1 to} T ₃ ) is several seconds to several ten seconds, which means that during the brushing operation of the hair, the hair brush 1 moves from one brushing to the next brushing.
This is because the moisture sensor 4 does not hit the hair, so that the outputs become pulsed like outputs A and B, and the output when the hair is not touching is determined to be a low moisture content and prevents malfunction. By setting T ₁ > T ₂ > T ₃ with respect to the first level, the second level and the third level for this predetermined time, malfunction does not occur even if brushing is stopped for a long time after detection of high moisture content. You can Further, the notification to the user is given by the intermittent sound and the continuous sound by the buzzer 33, but it may be changed by the tone color or by the light from the light emitting diode or the like. Further, in this embodiment, all are discrete, but the oscillation output of the oscillator 10 may be fetched into the microcomputer for signal processing, or the output of the conversion circuit 11 may be fetched for subsequent signal processing.

FIG. 6 shows a hair brush with a moisture sensor when it is attached to a hair dryer. That is, the attachment 3 attached to the dryer body 36
A moisture sensor 4 is attached to a substantially central portion of the bristle base 3 of 5. Reference numeral 37 is a power switch, and 38 is an attachment / detachment button for the attachment 35, which is detachably attached to the dryer body 36. Reference numeral 39 is a changeover switch for automatic control of the motor and heater by the moisture sensor 4, and when it is off, it can be used as a normal hair dryer. Then, when the power switch 37 is turned on, the dryer main body 36 is powered on, the fan driven by the motor is rotated, and the suction port 40
The hot air heated by the heater is drawn in from the discharge port 3
4, and the hair is dried while being brushed by the attachment 35. At this time, when the change-over switch 39 is turned on, the moisture content of the hair being brushed introduced between the electrodes 8 and 9 is detected by the moisture sensor 4, and automatic control is performed by the detection circuit and the determination means similar to the configuration of FIG. Be seen. That is, in terms of the circuit, the circuit of the above-described embodiment is used to perform signal processing to control the heater and the motor by a relay, a triac, or the like. Further, it also has the configuration of FIG. 1, and the buzzer 33 of the informing means operates in the same manner as in the above-mentioned embodiment.

To explain the washing and drying with reference to the timing chart of FIG. 2, the hair is brushed (t
Until the time ₀ ), the buzzer 33 does not sound, and the dryer body 35 is controlled to be cool air. The moment the brushing of the hair is started and the wet hair is introduced between the electrodes 8 and 9 of the moisture sensor 4 (at time t ₀ ), the heater is turned on and hot air of full power is discharged to dry it with high efficiency. Eventually, the dry gas progresses and the moisture content falls below the first level, and after a lapse of a predetermined time (T ₁ ) from time t ₁ (time t ₂ ), the buzzer 33 makes an intermittent noise and the dryer body 36 is lower than full power. The heater and the motor power source are controlled so that the air temperature becomes high and the air volume becomes low (at this time, only the heater may be controlled to achieve the low air temperature and the high air volume). This informs the user that the drying is almost complete and encourages the hair to be dried and set. When the second level is turned off, the buzzer 33 becomes a continuous sound after a predetermined time (T ₂ ) has passed from the time point t ₃ (at the time point of t ₄ ), and the dryer main body 36 turns off the power supply to the heater to generate cold air and dry. Notify the completion of and prevent overdrying. At this time, the air volume may be reduced. The brushing is stopped, and the buzzer 33 is also stopped after a predetermined time (T ₃ ) has passed from the time point t ₅ (time point t ₆ ).

Therefore, in the operation of this hair dryer, the moisture content is above the first level (moisture content of about 20 to 2).
5%), the first notification (silence), the hair dryer is in a high air temperature and a high air volume, and the hair treatment is in a dry area. From the first level to the second level (water content is about 10 to 15%), the second
The notification (intermittent sound) indicates that the high air temperature, high air volume, low air temperature, or high air volume will be set and the stage will be ready for completion. From the second level to the third level (moisture content is 0 to 5%), the third notification (continuous sound) is made, and at the third level and below, there is no sound.
Below this level, the hair dryer is cold air and the hair treatment is over-dried when the hair is completely dried.

It should be noted that a melody or the like may be notified in the first area above the first level so that the hair can be comfortably dried when the hair is wet. In addition, the expansion time of the expansion means of each of the first determination unit and the second determination unit of the determination unit for the notification unit is determined by the first determination unit of the determination unit provided for the heater and the motor of the hair dryer. By setting the extension time of the extension means to be long,
The dryer wind reduces unnecessary unpleasant feeling by repeatedly repeating hot and cold air and the amount of air flow.
It is also possible to make the notification as real time as possible.

[0038]

According to the hair brush with a moisture sensor of claim 1, when the moisture content of the hair is equal to or higher than the first level, the first notification is given, and the drying progresses to a level between the first level and the second level. Then, the second notification is given to notify that the drying is almost completed and to set the hair, and when the moisture content of the hair falls below the second level, the third notification notifies the completion of the drying. While brushing the moisture content of the hair, it can be easily and quickly measured, and since the hair drying process is roughly classified into three areas according to the moisture content, there is an effect that an optimum drying set can be performed and overdrying can be prevented. .

The hair brush with moisture sensor according to claim 2 is
In the first aspect, since the first notification or the third notification is silenced, it is possible to omit the sound generation during use without lowering the effect of the first aspect. A hair brush with a moisture sensor according to a third aspect is the hair brush according to the first aspect, wherein the output of the detection circuit is the second level or a third level lower than the second level.
If it is between the levels, the third notification is given, and the third notification is given.
Since the sound level is set to be silent at a level of 3 or lower, it is possible to prevent unnecessary notification from being continued when brushing is not performed at a level of 3 or lower, in addition to the effect of claim 1.

A hair brush with a moisture sensor according to claim 4 is
In claim 1, since the first level and the second level are made variable, in addition to the effect of claim 1, it is possible to change the moisture content in the dry completed state according to the preference of the user, and from the moist drying. You can dry it freely. The hair brush with a moisture sensor according to claim 5 is the dryer structure according to claim 1 or 4, which blows out cool air when the output of the detection circuit is lower than the second level. In addition to the effect of 4, overdrying can be prevented and the completion of drying can be notified by cold air.

A hair brush with a moisture sensor according to claim 6 is
5. The dryer structure according to claim 1 or 4, which blows out warm air when the output of the detection circuit is equal to or higher than the second level, and is higher than the air temperature when the warm air is higher than the first level. Since the air temperature is set low when the temperature is lower than the first level, in addition to the effect of claim 1 or claim 4,
The drying power near the completion of drying can be lowered to prevent overdrying, and the lower the moisture content, the higher the temperature of hair tends to be, thereby eliminating the feeling of heat to the user.

A hair brush with a moisture sensor according to claim 7 is:
The dryer structure according to claim 1 or 4, which blows out a predetermined air volume, wherein the first air volume is higher than the air volume when the output of the detection circuit is higher than the first level.
Since the amount of airflow is set to be smaller when the level is lower than the level, the effect of claim 1 or claim 4 and the spread of hair due to the wind can be suppressed, and the setting operation becomes easy.

A hair brush with a moisture sensor according to claim 8 is
In Claim 5 or 7, since the air volume during the cold air is set to be equal to or less than the air volume of the warm air when the output of the detection circuit is lower than the level of 1, the flow rate of the claim 5 or 7 is reduced. In addition to the effect, the hair can be prevented from being disturbed by the wind after the completion of the dry setting. The hair brush with a moisture sensor according to claim 9 is the hair brush according to claim 1 or 4, wherein the detection circuit sets an output of the moisture sensor in a state where hair does not hit the moisture sensor to a zero point, and Since it has an offset correction circuit that obtains the moisture content from the amount of change in the output, in addition to the effect of claim 1 or 4, it also changes when the output of the detection circuit changes due to the surrounding environment and changes over time, or due to the heat of the hair dryer. Even if it does, the moisture content can be accurately detected.

According to a tenth aspect of the present invention, in the hair brush with a moisture sensor according to the ninth aspect, the first determination unit is saturated due to a change in the zero point beyond the dynamic range of the circuit in which the input of the offset correction circuit is set. If you do
Since it is determined that the first level or higher, the claim 9
In addition to the above effect, it is possible to prevent malfunction due to the output of the offset correction circuit becoming smaller than it actually is.

According to an eleventh aspect of the present invention, in the hair brush with a moisture sensor according to the first or third aspect, the first determination unit to the third determination unit detect the first level to the third level, respectively. Each of the first determination unit to the third determination unit has an expansion unit that expands the output of the detection signal of each detection unit for a predetermined time, and the predetermined time is greater than the first level. Since the one for the second level is short and the one for the third level is shorter than the second level, in addition to the effect of claim 1, there is a period during which the hair separates from the moisture sensor in the brushing operation. Therefore, the output of the detection circuit becomes discontinuous in a pulse shape, but by setting the predetermined time of the expansion means as described above, due to variations in the middle of the measurement, it is possible to obtain a low water content despite a high water content. It is possible to prevent a malfunction of disconnection.

A hair brush with a moisture sensor according to a twelfth aspect is the hair brush with a moisture sensor according to the first aspect or the eleventh aspect, wherein the extending means of each of the first determining section and the second determining section is the notification means and the dryer structure. Since it is provided separately and the length for the dryer structure is made longer than that for the notification means, in addition to the effect of claim 1 or claim 11, the wind of the dryer unnecessarily repeats the intensity of the hot and cold air or the air volume to the user. It is possible to reduce the discomfort, and it is possible to perform the notification in real time as much as possible.

Since the hair brush with a moisture sensor according to claim 13 is the one according to claim 1 or 4, the notification of a melody or the like is provided in the first region of the detection circuit which is equal to or higher than the first level. In addition to the effect of claim 1 or claim 4, it is possible to comfortably dry hair.

[Brief description of drawings]

FIG. 1 is a circuit diagram of an embodiment of the present invention.

FIG. 2 is a waveform diagram of each part thereof.

FIG. 3 is a plan view of a hair brush.

FIG. 4 is a front view thereof.

FIG. 5 is an enlarged view of a moisture sensor.

FIG. 6 is a front view of an example applied to a hair dryer.

FIG. 7 is a partial circuit diagram of another embodiment of the input section of the comparator.

[Explanation of symbols]

4 Moisture Sensor N ₁ Detection Circuit N ₂ First Judgment Section N ₃ Second Judgment Section N ₄ Third Judgment Section N ₅ Judgment Means N ₆ Notification Means

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

[Procedure amendment]

[Submission date] October 23, 1991

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] 0002

[Correction method] Change

[Correction content]

[0002]

2. Description of the Related Art As a method of indirectly measuring the moisture content of hair, a method of measuring the capacitance (dielectric constant) or electric resistance (dielectric loss) of hair is generally used. This utilizes the characteristic that the permittivity of water is large and the dielectric loss is small compared to other substances. As a method for measuring the water content value of hair by this method, there is one disclosed in Japanese Utility Model Publication No. 57-112947, and one used in a hair dryer is disclosed in Japanese Utility Model Publication No. 63-095508. is there. In these devices, an electrode is provided on an openable / closable probe, and the hair is sandwiched between the electrodes to measure the water content.

[Procedure Amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0035

[Correction method] Change

[Correction content]

To explain the washing and drying with reference to the timing chart of FIG. 2, the hair is brushed (t
Until the time ₀ ), the buzzer 33 does not sound, and the dryer body 35 is controlled to be cool air. The moment the brushing of the hair is started and the wet hair is introduced between the electrodes 8 and 9 of the moisture sensor 4 (at time t ₀ ), the heater is turned on and hot air of full power is discharged to dry it with high efficiency. Eventually the dry gas progressed and the moisture content was the first level detected last
After a lapse of a predetermined time (T ₁ ) from time t ₁ (at time t ₂ ), the buzzer 33 becomes an intermittent sound and the power of the heater and the motor is controlled so that the dryer main body 36 is in a state lower than the full power, and the high temperature air is blown. , Low air volume (at this time, low air temperature and high air volume may be controlled by controlling only the heater). This informs the user that the drying is almost complete and encourages the hair to be dried and set. Eventually the second level
After a predetermined time (T ₂ ) has passed from the time point t ₃ detected later (t _2
From the time point ( ₄ ), the buzzer 33 produces a continuous sound, and the dryer main body 36 turns off the power to the heater, resulting in cold air,
Notify the completion of drying and prevent overdrying. At this time, the air volume may be reduced. After brushing is stopped and a predetermined time (T ₃ ) has passed from the time point t ₅ (t ₆ ).
The buzzer 33 also stops.

Claims (13)

[Claims] 1. A first detection circuit which has a detection circuit for detecting a water content by a water content sensor installed in the bristle, and outputs when the output of the detection circuit is equal to or higher than a first level set as a reference of the water content. And a second determining unit for outputting when the output of the detecting circuit is equal to or higher than the second level lower than the first level, the first determining unit and the second determining unit. According to the output of the determination unit, the first notification is performed in the first area above the first level and the second notification is performed in the second area between the first level and the second level. A hair brush with a moisture sensor, characterized in that it has a notification means for making a third notification in a third area below the level of 2. 2. The hair brush with a moisture sensor according to claim 1, wherein the first notification or the third notification is silent. 3. The determination means is provided with a third determination section for outputting when the output of the detection circuit is equal to or higher than a third level lower than the second level, and the third level and the third level are provided. The hair brush with a moisture sensor according to claim 1, wherein the third notification is made in a region between the levels, and the fourth region below the third level is silent. 4. The hair brush with a moisture sensor according to claim 1, wherein the first level and the second level are variable. 5. The hair brush with a moisture sensor according to claim 1, which has a dryer structure for blowing cold air when the output of the detection circuit is lower than the second level. 6. A dryer structure that blows out warm air when the output of the detection circuit is equal to or higher than the second level, wherein the warm air has a temperature in the second region that is higher than that in the first region. The hair brush with a moisture sensor according to claim 1 or 4, wherein the water content is lowered. 7. A dryer structure that blows out a predetermined air volume when the output of the detection circuit is equal to or higher than the second level, wherein the air volume is smaller in the second area than in the first area. A hair brush with a moisture sensor according to claim 1 or 4. 8. The hair brush with a moisture sensor according to claim 5, wherein the air volume during the cold air is equal to or less than the air volume of the warm air in the second region. 9. The detection circuit has an offset correction circuit which sets an output of the moisture sensor in a state where hair does not hit the moisture sensor as a zero point, and obtains a moisture rate from a change amount of the output of the moisture sensor with respect to the zero point. The hair brush with a moisture sensor according to claim 1 or 4. 10. The first determination unit is configured to determine that the input level of the offset correction circuit is equal to or higher than a first level when the input of the offset correction circuit is saturated beyond the dynamic range of the set circuit due to the variation of the zero point. The hair brush with a moisture sensor according to claim 9. 11. The first to third judging sections each have a detecting means for detecting a first level to a third level, and the detection signal output of each detecting means is expanded for a predetermined time. The first to third determination units have a decompression means for performing the predetermined time, and the predetermined time is shorter for the second level than the first level and third for the second level. The hair brush with a moisture sensor according to claim 1 or 3, wherein the length of the hair brush is shortened. 12. The extension means of each of the first determination unit and the second determination unit is provided separately from the notification unit in the dryer structure, and the extension unit for the dryer structure is longer than the extension unit for the notification unit. The hair brush with a moisture sensor according to claim 1 or 11. 13. The hair brush with a moisture sensor according to claim 1, wherein a melody or the like is notified in the first area of the detection circuit which is equal to or higher than the first level.