JPH0584114A - Hair dryer - Google Patents

Abstract

PURPOSE:To perform simply switching of the amt. of evacuated air between concentration and dispersion by means of a knob operation and to make it possible to control consumed electric power and hot air temp. by means of a semiconductor heater. CONSTITUTION:A nozzle 42 is provided at an exhaust vent 6 and an opening 42a is provided at the central part of the nozzle 42. Opening parts 42b and 42c are provided at a symmetric position to the opening 42a and shutter 43 and 44 which can freely be opened and closed are provided on the opening parts 42b and 42c. In addition, a phase control means using a heater element 37a with a negative temp. factor as a semiconductor heater and controlling electric power consumption of the heater 37a is provided on the heater part and a variable resistor controlling hot air temp. is provided on the phase control means.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a hair dryer.

[0002]

2. Description of the Related Art In order to concentrate or disperse hot air by changing the area of a discharge port, conventionally, nozzles have been assembled and removed at the discharge port for adjustment. Some heaters use a positive temperature coefficient heater element (hereinafter referred to as PTC heater).

The hair dryer will be described below with reference to FIGS. 7 and 8. A grip 2 is provided on the outer side of a cylindrical main body 1, a switch knob 3 is provided on the front side of the grip 2, and a power supply is provided from the grip end. Code 4 is pulled out. A suction port 5 is provided at the rear end of the main body 1, a discharge port 6 is provided at the front end, and a guard 7 is provided.

Inside the main body 1, the outer edges of the rectifying blades 8a formed on the outer periphery of the motor cover 8 of the blower 51 are held on the inner surface of the main body 1, and the motor 9 of the blower 51 is inserted into the motor cover 8. The fan 11 is attached to the motor shaft 10 which is attached and faces the suction port 5.

A pair of holding arms 12 are provided on the opening edge of the motor cover 8 on the discharge port 6 side, and the heater portion 1 is attached to the holding arms 12.
The horizontal plate 15 of the cross substrate 14 of 3 is held. The cross substrate 14 has a groove 16 on each outer edge thereof, and a voltage dividing resistance wire 17 of the motor 9 is wound around the cross substrate 14. The heater unit 13 has a cylindrical PTC heater 13a. FIG. 9 shows a nozzle 18 which is detachably attached to the main body 1 and is attached to the tip of the main body 1 when hot air from the discharge port 6 is concentrated.

In this hair dryer, when the power cord 4 is inserted into an outlet (not shown) and the switch knob 3 is operated, the motor 9 operates and the fan 11 rotates. Thereby, the wind is taken in through the suction port 5, passes through the inside of the main body 1, passes through the heater section 20, and is blown out from the discharge port 6 with warm air.

On the other hand, by mounting the nozzle 18 on the discharge port 6,
When the hair dryer is operated, the tip portion 18 of the nozzle 18 is
Since a is tapered, the hot air discharged from the discharge port 6 is concentrated.

Further, in order to concentrate hot air more, FIG.
An attachment as shown in 0 has also been devised. This is because when the nozzle 19 is inserted into the discharge port 6 and the knob 20 is slid in the direction of the arrow A, the wind shield plates 21 and 21 provided above and below the inside of the nozzle 19 cause the tip opening 19 of the nozzle 19 to move.
The hot air is further concentrated by discharging from a and narrowing the width H of the opening 19a to the width h.

[0009]

The hair dryer is mainly used when drying and styling the hair after washing the hair. When drying, the air volume is large and it is better to disperse the hair.
Also, it is better to concentrate when styling hair. No nozzle was used when the warm air was dispersed, and when the nozzle was attached when the hot air was concentrated, the nozzle had to be attached and detached each time, which was troublesome.

Further, since the PTC heater is used in the heater portion, this heater is known as a positive temperature coefficient heater element and has a unique property. That is, when the temperature reaches a certain value, the resistance suddenly increases and the power consumption is automatically controlled. Power consumption per PTC heater used as a hair dryer is 300W
In order to increase the capacity, it is necessary to increase the number of units used, which causes the size of the main body to increase and the cost to increase.

[0011]

In order to solve the above problems, in the hair dryer of the present invention, a nozzle is provided in front of the discharge port, a plurality of openings are provided in the nozzle, and a plurality of openings are provided. A shutter for opening and closing several openings is rotatably provided in the nozzle, and an operating means for rotating the shutter is provided.

A negative temperature coefficient heater element is provided in the heater section.

[0013]

When the hair dryer is constructed as described above and the hair is dried or hair is conditioned, the air from the discharge port can be dispersed or concentrated by operating the operating means.

Further, since a negative temperature coefficient heater element (hereinafter referred to as an NTC heater) is used in the heater section, the resistance value decreases and the power consumption increases when the temperature of the heater rises, so a plurality of NTC heaters are used. It is possible to provide a small, lightweight and inexpensive hair dryer that does not need to be used.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention is shown in FIGS. Incidentally, the same parts as in the conventional case will be designated by the same reference numerals. That is, in this hair dryer, a heater part is provided in the vicinity of the discharge port, a blower is arranged on the suction port side of the heater part, and a nozzle is provided in the front part of the discharge port, and the main opening part is formed in this nozzle. In addition to the above, an auxiliary opening is provided, a shutter for opening and closing the opening is provided in the nozzle, and an operating means for rotating the shutter is provided in the nozzle. An NTC heater is provided in the heater section.

In more detail with reference to the reference numerals of the drawings, this hair dryer has a substantially cylindrical main body 31 provided with a hair dryer driving operation section 32, and this operation section 32 provided with a switch knob 33 for operation. The power cord 4 is pulled out from the end of the portion 32. The power cord 4 is swingable. The switch knob 33 is the operation unit 3
The changeover switch 34 provided inside the switch 2 is interlocked, and the turbo switch knob 34 provided at the front part of the switch knob 33 is interlocked with the turbo switch 35. 66
Is a volume knob for adjusting the temperature of warm air.

A suction port 36 is provided at the rear end of the main body 31. Inside the main body 31, the outer edge of the rectifying blade 8a formed on the outer periphery of the motor cover 8 of the blower 51 is held on the inner surface of the main body 31, and The motor 9 of the blower 51 is inserted into the cover 8, and the fan 11 is attached to the motor shaft 10 facing the suction port 36 side.

A pair of holding arms 12 are provided at the opening edge of the motor cover 8 on the discharge port 6 side, and the heater portion 3 is attached to the holding arms 12.
The horizontal plate 15 of the cross substrate 14 of 7 is held. The cross substrate 14 has a groove 16 at each outer edge thereof, and a voltage dividing resistance wire 17 of the motor 9 is wound around the cross substrate 14. The heater portion 37 has a cylindrical NTC heater 37a.

On the cross substrate 14 near the heater portion 37, N
A thermostat 38 for preventing the temperature rise of the TC heater 37a is provided, and a sensor 39 for controlling the power consumption of the NTC heater 37a, a variable resistor (volume) 40, and a capacitor 41 are provided.

Reference numeral 42 denotes a nozzle mounted on the discharge port 6. The nozzle 42 has a central opening 42a and an opening 4 above the opening.
2b and an opening lower part 42c are provided, and the opening parts 42b, 42c are provided.
An upper shutter 43 and a lower shutter 44 for opening and closing are provided in the nozzle 42. The shutters 43 and 44 have a shutter upper cam 43a and a shutter lower cam 44a at one end, and the respective cams 43a and 44a are the main shaft 4 of a shutter knob 45 provided outside the nozzle 42.
By rotating the shutter knob 45 in the arrow A direction by engaging with 6 and the main cam 47 pivotally supported, the shutter 43 rotates in the arrow B direction and the shutter 44 rotates in the arrow C direction.

The shutters 43 and 44 are pulled by a spring 48 as shown in FIG. The cams 43a and 44a are rotatably supported by shafts 49 and 50.

The NTC heater 37a has a negative characteristic that the resistance value decreases as the temperature rises. Therefore, when the resistance value decreases due to the temperature increase, the current value increases and the power consumption increases. A well-known phase control circuit 60 for controlling the above power consumption is provided in the heater circuit section by utilizing the characteristics thereof. As shown in FIG. 6, this phase control circuit comprises a thermistor 39, a resistor 61, a capacitor 41, a diac 61 and a triac 63. The resistor 61 wired in series with the thermistor 39 in the above can achieve the original purpose without being provided depending on the specifications of other components.

Further, a variable resistor 40 is provided in series with the thermistor 39, and the resistance value is changed by interlocking with the volume knob 66 provided on the operation section 32.
The power consumption of the NTC heater 37a can be adjusted.

Reference numeral 63 is a diode for controlling the number of rotations of the motor 9 by half-wave, 64 is a temperature fuse operated by the temperature when an abnormal temperature rise occurs during hair dryer operation, and 65 absorbs noise of the motor 9. It is a condenser.

The operation of the hair dryer of the present invention will be described below.

When the power cord 4 is connected to an outlet (not shown) and the switch knob 33 is slid to energize the motor 9 and the NTC heater 37a, the outside air is taken in through the suction port 5 by the rotation of the fan 11 and the heated heater. Hot air is discharged from the nozzle 42 through the discharge port 6 through the nozzle 37a.

When it is desired to change the air volume or the air velocity of the warm air or the cold air during the use of the hair dryer, the turbo switch 35 which further divides the voltage dividing resistance wire 17 wired in series with the motor 9 is turned on. As a result, the number of rotations of the motor 9 increases, and when the motor 9 is turned off, it returns to the normal number of rotations. Therefore, the turbo switch 35 may be turned on and off.

When the hot air discharged from the nozzle 42 is concentrated and dispersed, the shutter 4 inside the nozzle 42 is used.
It is switched by rotating 3,44. That is, in FIG. 1, the cam 47 is moved counterclockwise (direction of arrow A).
When rotated to the right, the cam 43a rotates clockwise and the shutter 43 rotates clockwise (direction of arrow B) to open the opening 42b.
Is opened, the cam 44a rotates counterclockwise, the shutter 44 rotates counterclockwise (direction of arrow C) to open the opening 42c, and the hot air is opened 42b, 42.
The wind is dispersed by opening c. To switch from the dispersed state to the concentrated state, the knob 45 is rotated in the reverse direction so that the cams 47, 43a and 44a are reversed and the shutters 43 and 44 are closed. The shutters 43 and 44
A spring 48 is provided so that the openings 42b and 42c are always biased to the closed state. The shutter 4
Needless to say, when the concentrated state is made by 3, 44, the discharge area is narrowed and the wind speed is higher than that in the dispersed state.

Since the NTC heater is used as the heater 37a, the power consumption increases as the temperature rises as described above. Therefore, when the warm air temperature rises, the temperature of the sensor provided in front of the NTC heater 37a increases depending on the temperature. 39
The resistance value of the triac 52 and diac 53 has increased.
The phase is automatically controlled by.

Further, since the power consumption of the NTC heater can be varied by varying the resistance value of the variable resistor 40 by the volume knob 66, the temperature of the hot air discharged from the nozzle can be adjusted. You can

[0031]

The present invention has the following effects due to the above-mentioned structure. In claim 1, the wind can be easily concentrated and dispersed by operating the knob, and the hair can be dried and the hair can be easily adjusted.

According to the second aspect, since the heater uses the negative temperature coefficient heater element, it is possible to obtain a hair dryer that consumes a large amount of power, and it is possible to expand the applications of the hair dryer.

[Brief description of drawings]

FIG. 1 is a sectional view of a hair dryer of the present invention.

FIG. 2 is a sectional view of the main part of the nozzle portion of the same.

FIG. 3 is likewise an external view of the shutter.

FIG. 4 is likewise an external view under the shutter.

FIG. 5 is likewise an external view of a shutter assembly.

FIG. 6 is likewise an electric circuit diagram.

FIG. 7 is a sectional view of a main part of a conventional hair dryer.

FIG. 8 is likewise an exploded view of the heater section.

FIG. 9 is likewise a sectional view of the nozzle.

FIG. 10 is likewise a sectional view of another embodiment of the nozzle.

[Explanation of symbols]

 36 Suction Port 37 Heater 37a NTC Heater 42 Nozzle 42a Central Opening 42b Opening Upper 42c Opening Lower 43 Shuttering Up 44 Shuttering Down 43a Shuttering Up Cam 44a Shuttering Down Cam 45 Shutter Knob 46 Spindle 47 Main Cam 48 Spring

Claims (2)

[Claims] 1. In a hair dryer having a heater built in near the discharge port and a blower disposed on the suction port side of the heater unit, a nozzle is provided in front of the discharge port, and a plurality of nozzles are provided in the nozzle. A hair dryer comprising an opening, a shutter for opening and closing several of the plurality of openings rotatably provided in the nozzle, and an operating means for rotating the shutter. 2. The hair dryer according to claim 1, wherein the heater section uses a negative temperature coefficient heater element.