JPS62270104A - Hair dryer - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

Detailed Description of the Invention 3. Detailed Description of the Invention (a) Field of Industrial Application The present invention relates to a hair dryer that blows hot and cold air onto the hair to dry and style the hair.

(b)j Conventional hair dryers selectively emit hot air and cold air for drying and styling hair. The selection of warm air and cold air is done by manually switching a switch, but cold air, which is used less frequently than hot air, can only be used by pressing a switch lever as shown in Publication No. 58-39122. I'm trying to get it.

However, switching between hot air and cold air is done manually, which makes the operation cumbersome, and when switching, it is necessary to change the direction of the main body to a position where the changeover switch can be easily operated. In particular, when styling (setting) hair, it is effective to warm the hair sufficiently with warm air to create the desired waves, and then apply cold air suddenly to set the hair, but in this case, the frequency of use of cold air is higher. This also has the disadvantage of causing pain in the fingers due to the increased number of switching operations.

Pj Problems to be Solved by the Invention The present invention aims to improve operability by automatically alternating hot air and cold air.

(2) Means for solving the problem The present invention (well, the present invention is equipped with a heater, a blower motor, and a timer for opening and closing a switch that opens and closes at predetermined intervals, and the switch is provided in a circuit on the heater side. .

(e) Operation When the heater, motor, and timer are energized, the timer opens and closes the switch intermittently, and when the switch is opened, cold air is discharged, and when it is closed, hot air is discharged, and hot air and cold air are automatically alternated. Dispense it and style your hair.

(F) Embodiment An embodiment of the present invention will be described based on the drawings. (1) is a heater, (2) is a motor that rotates a fan (not shown) to blow air, (3) is a rectifier that applies direct current to the motor, and (4) is a step-down resistor connected in series with the rectifier. ,(5
) is a control circuit that controls the phase of the heater (1), and includes a semiconductor switching element (
6) Capacitor (7) and positive thermistor (8)
) and a gate circuit (II) consisting of a constant voltage conduction element (9). The positive temperature coefficient thermistor (8) is provided close to the heater (1), and its resistance value always increases or decreases depending on the temperature of the hot air. (111 is a switch a connected in series to the positive temperature coefficient thermistor (8).
2 is a timer that opens and closes at predetermined intervals.
rjI switch 02 is closed. t13) is a constant voltage circuit for driving the timer C111, and is composed of a Zener diode I and a smoothing capacitor (19).

αe is an operation switch provided on the timer output side and selects the operation of the timer; (17+ is two interlocking contact pieces α
A power supply switch equipped with 1DQ81 connects the motor (2
) side and the heater (1) side at the same time to discharge hot air, or power is supplied only to the motor (21 side) to continuously discharge cold air.The device is a temperature fuse, and ■ is a limiter-1 penalty. is a noise prevention capacitor, is a DC step-down circuit consisting of a resistor and diode U, and is a choke coil.

Next, we will discuss the operation.

First, if you want to obtain hot air and cold air alternately, place the contact mark on the power supply switch σ on the motor (2) side and the heater (1) side.
) side and closes the activation switch (IB). Closing this activation switch causes the timer q11 to measure time, and since the switch D is initially closed, the heater (1) generates heat and hot air is discharged. Eventually, after a predetermined period of time (approximately 20 seconds) has elapsed, the switch a is opened by the timer (II), the voltage supply to the gate circuit (1) is cut off, and cold air is discharged.The timer a11 measures the time again and the cold air is discharged. When a predetermined time (about 10 seconds) has elapsed, the switch will be switched depending on the output.
closes and hot air is discharged. In this way, hot air and cold air are automatically and alternately obtained intermittently.

In addition, the positive characteristic thermistor (8) that detects the hot air temperature is
When the hot air temperature is low, its resistance value is small, so the constant voltage conduction element (9) becomes conductive and the semiconductor switching element (6
) conducts and energizes the heater (1), but as the temperature of the hot air increases, its resistance increases and the conduction angle of the semiconductor switching element (8) changes, reducing the amount of heat generated by the heater (1). Maintains the hot air temperature constant.

In addition, if an interlocking switch that is closed by the timer output is connected to a part of the step-down resistor of the motor as shown by the broken line in the drawing, the rotation speed of the motor will increase when the switch is opened by the timer output and cold air is discharged. As the amount of cold air increases, the heated hair can be rapidly cooled and the hair styling effect can be improved.

(G) Effects of the Invention As described above, the present invention has a timer that turns on and off the heater at predetermined intervals to automatically take out hot air and cold air alternately. It can be done quickly and is easy to operate. Further, since the switch for alternately obtaining hot air and cold air is provided in the gate circuit of the semiconductor switching element, the current capacity of the switch can be reduced.

[Brief explanation of the drawing]

The drawing is an electrical circuit diagram of the hair dryer of the present invention. (1)...Heater, (2)...Motor, (6)
...Semiconductor switching element, mark...gate circuit,
σV...timer, az...switch.

Claims (2)

[Claims] (1) A hair dryer comprising a heater, a blower motor, and a timer that opens and closes a switch at predetermined intervals, the switch being provided in a circuit on the heater side to intermittently energize the heater. . (2) The hair dryer according to claim 1, characterized in that a semiconductor switching element is connected in series to the heater, and the switch is connected to a gate circuit of the semiconductor switching element.