JPH0651009B2 - Hair dryer - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Use The present invention relates to a hair dryer that dries and conditions hair by applying warm air and cold air to the hair.

(B) Conventional Technology In general, a hair dryer selects hot air or cold air and blows it out in order to dry and condition hair. The selection of the hot air and the cold air is performed by manually switching the switch. However, the cold air which is less frequently used than the hot air is generated when the switch lever is pushed as shown in Japanese Utility Model Publication No. 58-39122. I'm only trying to get it.

However, since the hot air and the cold air are switched manually, the operation is troublesome, and at the time of switching, it is necessary to change the direction of the main body to a position where switching is easy. In particular, when styling hair, it is easy to set by applying warm air and then cold air, but in this case, there was a problem that the switching operation was troublesome because of the frequent use of cold air.

In order to solve such problems, JP-A-62-270104, JP-A-61-31303, JP-A-53-5179,
In the dryer disclosed in Japanese Utility Model Laid-Open No. 58-61105, hot air and cold air are automatically obtained alternately. However, in these conventional devices, the switching timing of hot air and cold air is constant, so when the ambient temperature is different such as in summer and winter, it is not possible to set the usage condition according to the situation, and it is easy to use. There was a problem that was bad. Furthermore, since the conventional ones have only a configuration that automatically switches between hot air and cold air, the distinction between hot air and cold air must rely on the feeling of the user. It was Therefore, there is a problem that even if hot air and cold air are blown out alternately, it is not possible to perform fine hairdressing according to the wind.

(C) The problem to be solved by the invention In consideration of the above points, the present invention is a hair dryer capable of automatically obtaining hot air and cold air alternately, and can switch the cycle and time of hot air and cold air. It is an object to provide a hair dryer that can improve the operability further by making it possible to notify the switching of hot air and cold air with a buzzer without relying on the sense of the user and perform fine hairdressing. And

(D) Means for Solving the Problems The present invention controls the opening and closing of a heater, a motor for driving a fan for blowing air, and a switching element connected in series to the heater to energize and de-energize the heater. In a hair dryer that automatically and alternately blows hot air and cold air, the heater control means that alternately performs the hot air and the hot air by changing the cycle or time of energization and de-energization of the heater by the operation of the user. And a switching means for changing the surrounding or time of switching of the cold air and a notification means for notifying the switching time of the hot air and the cold air by a buzzer sound based on the output of the heater control means. is there.

Further, the notifying means may be configured to make the buzzer sound different at the time of switching from warm air to cold air and at the time of switching from cold air to warm air.

(E) Action Since the present invention is provided with the switching means for changing the surrounding or the time of switching between the hot air and the cold air as described above, depending on the case of winter and summer when the ambient temperature is different and other use conditions. The hot air blowing time can be switched, and the operability can be further enhanced by setting the usage pattern according to the user's preference. Furthermore, since a notification means for notifying the switching time between hot air and cold air with a buzzer sound is provided, the user can be surely notified by a buzzer sound without relying on the user's feeling to switch between hot air and cold air, The hair can be finely tuned, and the operability can be further improved as compared with a conventional dryer that merely generates hot air and cold air alternately.

Also, if the notification sound by the buzzer is made different at the time of switching from warm air to cold air and at the time of switching from cold air to warm air,
The distinction between warm air and cold air can be made more reliable.

(F) Example Hereinafter, an example of the present invention will be described with reference to the drawings. In the figure
(1) is a heater, (2) is a motor for rotating and blowing a fan (not shown), (3) is a rectifier for applying a DC voltage to this motor (2), and (4) is a step-down resistor . (5) is a zero-cross detection circuit for detecting zero-cross of the AC power supply, and the zero-cross signal is used for phase control of the heater (1) and the motor (2). (6) is a DC power supply circuit that supplies a DC voltage to each unit.

(7) is a normally-open switch with a function switching circuit that selects four modes: a normal mode in which hot air is constantly blown out, a hair care 1 mode in which hot air and cold air are blown alternately, a hair care 2 mode, and a cool mode in which cold air is constantly blown out. Every time (8) is closed, one of the four outputs is "H" in the order of A (normal), B (hair care 1), C (hair care 2), D (cool).
In the initial state, the output A becomes "H" and the normal mode is selected. (9) is a strength switching circuit that selects the temperature and volume of warm air between strong and weak, and is normally open (10)
The output is repeatedly "H" corresponding to "strong" and "L" corresponding to "weak", and becomes "H" in the initial state to select "strong".

(11) is a heater control means (circuit) for controlling the energization of the heater (1), which includes a semiconductor switching element (12) (hereinafter referred to as a switching element) such as a triac serially connected to the (1), A trigger pulse generating circuit (13) for generating two kinds of trigger pulses for opening and closing the switching element (12) and a trigger pulse generated by the trigger pulse generating circuit (13) are applied to the gate of the switching element (12). It is composed of a gate circuit (14) for selectively outputting.
More specifically, the trigger pulse generation circuit (13) synchronizes with the zero-cross signal E of the zero-cross detection circuit (5), and outputs a trigger pulse immediately after the zero-cross to output the trigger pulse to the heater (1) and the motor (2). A first trigger pulse generator (15) for increasing the duty ratio and a second trigger pulse generator for outputting a trigger pulse between zero crosses to reduce the substantial duty ratio of the heater (1) and the motor (2). (16) and strength switching circuit (9)
Switch that selects the first trigger pulse when the output of is "H", while selecting the second trigger pulse when it is "L" (1
It consists of 7) and.

The gate circuit (14) operates when the output B of the function switching circuit (7) is "H", outputs "H" for 6 seconds and "L" for 4 seconds, and repeats this. Second gate pulse generator (18) which operates when the output C is "H" and outputs "H" for 4 seconds and "L" for the next 6 seconds and repeats this And a container (19). The outputs of the first and second gate pulse generators (18) and (19) are the AND gate (21) to which the output of the trigger pulse generating circuit (13) is connected to one input via the OR gate (20). ) Is connected to the other input. (2
2) is an AND gate in which the output of the trigger pulse generation circuit (13) is connected to one input and the output A of the function switching circuit (7) is connected to the other input, and the output is the AND gate (21)
Is connected to the gate of the switching element (12) via the OR gate (23).

(24) is a motor control circuit for controlling the energization of the motor (2), which includes a switching element (25) connected in series with the rectifier circuit (3) and a trigger pulse generation circuit (of the heater control circuit (11) ( 13) and changes the energization rate of the motor (2) according to the output of the strength switching circuit (9) to set the air volume to strong and weak.

(26) is a notification circuit that notifies switching between hot air and cold air in the hair care mode, and the output of the OR gate (20) is "L".
Rise detector (27) that detects the time when the level changes from "H" to
On the other hand, the falling detector (28) that detects the time when it changes from "H" to "L" and the output of the rising detector (27) sound the buzzer (29) once, and the output of the falling detector outputs the buzzer (29). 29) and a bezel drive circuit (30) that sounds twice.

Next, the operation of the above configuration will be described. First, when the power is turned on, the initial state is set, and "strong" in normal mode.
Is set. That is, the output A of the function switching circuit (7) is "H".
The AND gate (22) opens, and the output of the strength switching circuit (9) becomes “H”, and the trigger pulse generation circuit (1
The first trigger pulse generator (15) of 3) outputs a first trigger pulse, and the first trigger pulse is transmitted through the AND gate (22) and the OR gate (23) to the switching element (1
Applied to the gate of 2). And switching elements (12)
Is opened and closed by the first trigger pulse to substantially energize the heater (1) to heat it. On the other hand, the first trigger pulse from the trigger pulse generation circuit (13) is the switching element.
It is also supplied to (25) and the motor (2) is energized to rotate the fan at high speed and perform strong blowing. As a result, strong warm air can be constantly blown out at a high temperature.

Next, when the switch (8) of the function switching circuit (7) is closed, the hair care 1 mode is set. That is, the output B of the function switching circuit (7) becomes "H" to operate the first gate pulse generator (18), and the output A becomes "L" to close the AND gate (22). The first trigger pulse output from the trigger pulse generation circuit (13) is the AND gate (21) when the first gate pulse generator (18) repeats "H" for 6 seconds and "L" for 4 seconds. Is intermittently passed through and output to the gate of the switching element (12). Therefore the heater
In (1), the operation of substantially energizing for 6 seconds and then stopping energizing for 4 seconds is repeated. On the other hand, the motor (2) is in the same state as in the normal mode and constantly blows a strong air. As a result, it is possible to alternately blow out strong warm air at high temperature for 6 seconds and strong cold air for 4 seconds.

Then, when the switch (8) is closed, the hair care 2 mode is set. At this time, the output C of the function switching circuit (7) is "H".
And the second gate pulse generator (19) operates, and the output B becomes "L", and the first gate pulse generator (19)
The operation of (18) stops. And the trigger pulse generation circuit (1
The first trigger pulse in 3) is the second gate pulse generator.
(19) repeats "H" for 4 seconds and "L" for 6 seconds to intermittently pass through the AND gate (21) as in the hair care 1 mode. Therefore, the heater (1) is continuously energized for 4 seconds and then deenergized for 6 seconds. As a result, a strong warm air at high temperature was continued for 4 seconds, followed by a strong cold air for 6 seconds.
You can blow out alternately for a second.

In each of the above hair care modes 1 and 2, switching between hot air and cold air can be distinguished by a buzzer. As described above, switching between hot air and cold air is performed by opening and closing the AND gate (21) by the outputs of the first and second gate pulse generators (18) and (19). That is, when the output of the OR gate (20) becomes "H", warm air blows out, and when it becomes "L", cold air blows out. Therefore, the notification circuit (26) inputs the output of the OR gate (20) and switches the cold air to the warm air to the rising detector (2
Detected in 7), sound the buzzer once to notify,
Switching from warm air to cold air is detected by the fall detector (28),
By sounding the buzzer twice to notify it, it is possible to switch between hot air and cold air and distinguish between them.

Next, when the switch (8) is closed, the cool mode is set. At this time, in the function switching circuit (7), the output D becomes "H" and the outputs A, B, C become "L". Therefore, the AND gates (21) and (22) remain closed, and the trigger pulse of the trigger pulse generating circuit (13) is not supplied to the gate of the switching element (12), so that the heater (1) is not energized.
However, since the switching element (25) is continuously supplied with the first trigger pulse, the cold air is constantly blown out.

In each of the above modes, the temperature of hot air and the amount of air blow can be switched by the strength switching circuit (9). First, in the initial state, the output of the strength switching circuit (9) is "H", so that the trigger pulse generation circuit (13) is the first switch (17).
The trigger pulse generator (15) side of is selected and the trigger pulse (referred to as the first trigger pulse) is output from the first trigger pulse generator (15). Since the first trigger pulse is output immediately after the zero cross of the AC power source as described above, when the first trigger pulse is output to the gates of the switching elements (12) (25), the heater (1) and the Motor (2)
As a result, the electric current to the heater becomes high, the heater (1) is heated to a high temperature, the fan is rotated at a high speed, and a strong wind can be blown out at a high temperature.

On the other hand, when the switch (10) of the strength switching circuit (9) is closed, its output changes from "H" to "L", and the trigger pulse generation circuit (13) selects the second trigger pulse generation circuit (16) side. Then, the second trigger pulse is output. Since the second trigger pulse is output between the zero crosses of the AC power source as described above, when the trigger pulse is output to the gates of the switching elements (12) (25), the heater (1) and the motor (2 ), The heating temperature of the heater (1) is lowered, the rotation speed of the fan is lowered, and a weak wind can be blown out at a low temperature. In the cool mode, the heater
Since (1) is not energized, only weak cold air is blown out.

In the above embodiment, the first and second gate pulse generators were selectively operated in order to change the blowing ratios of the hot air and the cold air, but the invention is not limited to this. It is also possible to use one gate pulse generator in which the above can be changed arbitrarily.

(G) Effect of the Invention As described above, according to the hair dryer of the present invention, since the switching means for varying the cycle or time for switching between hot air and cold air is provided, winter and summer when the ambient temperatures are different. The hot air blowing time can be switched according to the case or other usage conditions, and the operability can be further enhanced by setting the usage pattern according to the user's preference. Furthermore, since a notification means for notifying the switching time between hot air and cold air by a buzzer sound is provided, the user can be surely notified by a buzzer sound without relying on the sense of the user to switch between hot air and cold air, The hair can be finely tuned, and the operability can be further improved as compared with a conventional dryer that merely generates hot air and cold air alternately.

Also, if the notification sound by the buzzer is made different at the time of switching from warm air to cold air and at the time of switching from cold air to warm air,
It is possible to more reliably distinguish between warm air and cold air.

[Brief description of drawings]

FIG. 1 is an electric circuit diagram showing a main part of one embodiment of the present invention,
FIG. 2 is an electric circuit diagram showing the function switching circuit of the same embodiment. (1) …… Heater, (2) …… Motor, (5) …… Zero cross detection circuit, (7) …… Function switching circuit, (9) …… Strength switching circuit, (11) …… Heater control circuit, (12) (25) …… Semiconductor switching element, (13) …… Trigger pulse generator, (14)…
… Gate circuit, (26) …… Notification circuit.

Claims (2)

[Claims] 1. A heater, a motor for driving a fan for blowing air, and heater control means for controlling opening / closing of a switching element connected in series to the heater to alternately energize and de-energize the heater. In a hair dryer that automatically blows out hot air and cold air alternately, the cycle or time of energization and de-energization of the heater can be changed by the operation of the user to change the hot air and cold air around or around the time. A hair dryer comprising: a switching unit for changing the temperature of the air and a notification unit for notifying a switching time point between the hot air and the cold air by a buzzer sound based on the output of the heater control unit. 2. A heater, a motor for driving a fan for blowing air, and a heater control means for controlling opening / closing of a switching element connected in series to the heater to alternately energize and de-energize the heater. In a hair dryer that automatically blows out hot air and cold air alternately, the cycle or time of energization and de-energization of the heater can be changed by the operation of the user to change the hot air and cold air around or around the time. And a notifying means for notifying the switching time of hot air and cold air by a buzzer sound based on the output of the heater control means, and the notifying means changes the buzzer sound from warm air to cold air. A hair dryer characterized in that it is configured to be different at the time of switching and at the time of switching from cold air to warm air.