JPH05228016A - Hair drier - Google Patents

Abstract

PURPOSE:To vary the temperature of warm blast only by varying the swinging of a hair drier for improving the operability and utility by detecting the swing of the hair drier and varying heating capacity of the heater with a heating control means according to the detected result. CONSTITUTION:For example, a ball is movably received in a case to detect the swing of a blow-off port of a hair drier, and a swing detector 11 is provided which is constituted to detect the movement of the ball with a sensor. In using the drier, the output signal of the swing detector 11 is inputted to a control circuit 3 to obtain the number of times of the drier's swing per unit time for judging the condition of the drier being used. Namely, three conditions, i.e., 'hair combing condition' under which the drier is almost stopped, 'drying condition' under which the drier is swung from the hair combing condition and 'quick drying condition' under which the drier is further frequently swung are judged. An electrification regulator 7 is controlled according to the judging result to vary the heat generating amount of a heater 6, i.e., temperature of warm air.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hair dryer which automatically changes the amount of heat generated by a heater according to the usage state of the hair dryer.

[0002]

2. Description of the Related Art A conventional hair dryer is disclosed in, for example, Japanese Patent Laid-Open No.
As disclosed in Japanese Patent Laid-Open No. 7-89806, the configuration is such that the intensity of the warm air temperature is set by a manual switch each time, and once set, the hot air at a substantially constant temperature is obtained. However, when the dryer is in a stationary state and hot air is continuously applied to a certain position of the hair as in the case of preparing the hair, there is a problem that the part becomes overheated and the hair and the scalp are damaged. To prevent this, you can operate the manual switch to switch the hot air temperature to the low temperature side.
There was a problem that the operation was troublesome.

[0003]

SUMMARY OF THE INVENTION The present invention solves the above problems and provides a hair dryer capable of automatically switching the temperature of warm air according to the usage state of the dryer.

[0004]

SUMMARY OF THE INVENTION According to the present invention, in a hair dryer having a heater and a blower, a detecting means for detecting a shake of the dryer, and a heating value of the heater is varied according to an output of the detecting means. The heating control means is provided.

[0005]

Since the present invention is configured as described above, the dryer is frequently shaken by the detecting means for detecting the shake of the dryer and the hot air is widely hitting the hair, and the dryer is in the stationary state. It is possible to discriminate the state in which the warm air is hitting a certain position of the hair by being held in the case.In the former case, the warm air temperature is increased to increase the drying efficiency, while in the latter case, the warm air temperature is lowered. It acts to prevent overheating of hair and scalp.

[0006]

1 is a circuit diagram showing an embodiment of a hair dryer of the present invention. In this figure, power terminals (1) (1)
Is connected to a commercial power source (AC) and the power switch (2) is closed to supply power to the hair dryer. Commercial power (AC) is supplied to the control circuit (3), the heater circuit (4), and the motor circuit (5). The control circuit (3) is a micro computer which stores a predetermined program in advance,
It is equipped with a power supply circuit for supplying the operating power supply of this micro computer.

The heater circuit (4) comprises a heater (6) which constitutes a heater and an energization controller (7) which controls the energization of the heater (6) to vary the amount of heat generation in series. ing. The energization adjuster (7) is composed of a semiconductor switching element such as a triac for arbitrarily setting the energization rate of the heater (6). The motor circuit (5) constitutes a blower that rotates a fan attached to the rotary shaft of the motor (8), and a step-down resistor (9) and a full-wave rectifier (10) are connected in series to form a full-wave rectifier (10). ) Is connected to the motor (8). A fan attached to the heater (6) and the motor (8) is attached to a predetermined position of the hair dryer so as to take in air from the intake port, heat the air, and discharge hot air from the outlet port.

The hair dryer is equipped with a shake detector (11) for detecting the movement thereof, particularly the shake of the outlet. This detector is composed of, for example, a case fixed at a predetermined position of a dryer, a ball movably accommodated in the case, and a sensor for detecting the movement of the ball in response to a shake of about several cm at the outlet. To do. The sensor may be configured to detect the ball optically, magnetically or electrically and change the output according to the movement of the ball. Then, the output of the shake detector (11) is supplied to the control circuit (3), and the control circuit (3) determines, for example, the number of times the dryer shakes per unit time based on the presence or absence of the output, and according to the number of times. Determine the state of use of the dryer.

In the above structure, the power supply terminal (1)
When the power switch (2) is closed after connecting (1) to the commercial power supply (AC), the motor circuit (5) is energized, and the fan rotates at a predetermined rotation speed to start blowing a fixed amount of air. On the other hand, the control circuit (3) monitors the usage state of the dryer based on the output of the detector (11) and adjusts the heat generation amount of the heater (6). The usage condition of the dryer is, for example, the detector (11).
The number of outputs per unit time (for example, 5 seconds) is obtained, and the number of outputs is set as the frequency of the shake of the dryer to determine the usage state.

Then, as shown in FIG. 2, the control circuit (3)
When the frequency of the runout of the dryer exceeds a predetermined value A (for example, 5) or more, as shown in AL-AH in the figure, the energization controller increases the heat generation amount of the heater (6) as the runout frequency increases. Control (7). As a result, the temperature of the warm air rises as the frequency of shake increases, and conversely, the temperature of the warm air decreases as the frequency decreases. Therefore, as in the case of drying the entire wet hair,
Even if the amount of heat received per unit area decreases, the temperature of the warm air rises as the dryer is moved frequently, so the amount of heat received per unit area increases and hair drying efficiency can be improved. .. In addition, when it is desired to locally heat the hair, the temperature of the warm air can be easily raised by consciously shaking the dryer at that position without operating a switch. On the other hand, like when styling your hair,
When the hot air is applied locally, the dryer is not shaken so much, so the temperature of the hot air is lowered and the temperature rise of the hair and scalp more than necessary is suppressed.

Further, the control circuit (3) energizes the heater (6) as shown by BL-BH in the figure when the frequency of the runout of the dryer gradually decreases and becomes lower than a predetermined value B (for example, 2). The energization controller (7) is controlled so as to be temporarily cut off.
As a result, when the heated and styled hairstyle is desired to be hardened while being cooled by applying cold air, the user can intentionally hold the dryer still to generate cold air. still,
Since it is possible to generate hot air again by shaking the dryer several times, it is possible to easily perform hair styling at another position where hair styling has not ended.

When the dryer is left unused after use, the heater circuit (4) is automatically de-energized, so that waste of electric power can be suppressed and a fire due to overheating may occur. Can be prevented. Although the heater circuit (4) uses the semiconductor switching element as the energization adjuster (7), the heater circuit (4) is not limited to this and may be configured using a relay circuit or the like. Further, the heater circuit (4) varies the heat generation amount by adjusting the energization rate to the heater (6) by the conduction regulator (7), but changes the heat generation amount by changing the resistance value of the heater (6). It can also be configured. Further, the motor circuit (5) rotates the motor (8) at a predetermined number of revolutions so as to perform constant air blowing. However, similar to the heater circuit (4), it depends on the output of the shake detector (11). The rotation speed of the motor (8) may be variable.

[0013]

As described above, according to the present invention, the temperature of the hot air can be changed only by changing the way the hair dryer is shaken, so that the operation of switching the hot air temperature by the manual operation of the switch can be omitted. It is possible to further improve operability during hair drying and styling.

[Brief description of drawings]

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

FIG. 2 is a heat generation characteristic diagram of the heater in the example.

[Explanation of symbols]

 3 control circuit 4 heater circuit 5 motor circuit 7 energization controller 11 shake detector

Claims (1)

[Claims] 1. A hair dryer having a heater and an air blower, wherein a detection means for detecting shake of the dryer and a heating control means for varying a heat generation amount of the heater according to an output of the detection means are provided. Hair dryer characterized by.