JPH11290116A - Cordless hair dryer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a portable hair drier which does not take time to charge, resists wear caused by charge and discharge, and can be used many times. SOLUTION: A cordless hair drier comprises a cylinder part 2 in which a blower cylinder 10 heating the air fed from a blower motor 7 is mounted and a grip part 3 connected thereto. The blower cylinder is a passage made of a heat storage material, and heating resistance electric paths 17 made of a heat resistant conducting paint are formed on the inner and outer peripheries of the passage. A large capacity capacitor 11 for driving the blower motor is provided, and when the hair drier is not connected to an AC power supply, the blower cylinder heats the fed air by use of the energy stored when the hair drier is connected to the AC power supply. The blower motor 7 is driven by a charge stored in the capacitor 11 when the hair drier is connected to the AC power supply, and when hot air is being fed the energy is required only for driving the blower motor 7, so that little power is consumed. The hair drier operates for a long time on the charge stored in the large capacity capacitor when the hair drier is connected to the AC power supply. The charging of the capacitor is complete almost instantaneously.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a hair dryer,
In particular, the present invention relates to a cordless hair dryer that does not require a power cord during use.

[0002]

2. Description of the Related Art A conventional hair dryer is composed of a tubular portion having a blower tube capable of heating the blown air from a blower motor and a grip portion connected at a substantially right angle behind the tubular portion, and is kept connected to an AC power supply. It is usually used at home, but in addition to drying and styling the hair that was washed in the washroom at home or in one's room, it is necessary to trim hair when returning home from the office. However, although there is usually an AC power supply in the office,
There is often no power supply in the washrooms of business establishments and department stores, and women have to perform hairdressing in such places, so mobile phones that can be used even in places without power supply such as washrooms A hair dryer was desired.

[0003] A portable hair dryer of this type is currently proposed in which energy is stored in a lithium battery or the like, and where there is no power supply, the energy stored by the battery is used. However, the conventional battery has a long charging time, cannot be used immediately in a discharged state, and has a service life of about 500 times. In addition to driving the blower motor, it also generates heat with a nichrome wire. Therefore, the power consumption is large and the battery is quickly consumed. To avoid this, a large-capacity battery is required, but the large-capacity battery is disadvantageous in that it is expensive and heavy.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned drawbacks, and does not require much time for charging, does not consume by charging / discharging, can be used very many times, and has an AC power supply. The purpose of the present invention is to provide a portable hair dryer that can be used normally for 30 to 40 minutes after being removed from the hair dryer.

[0005]

Means for Solving the Problems The gist of the present invention consists of a tube portion having a blower tube inside which can blow air from a blower motor, and a grip portion which is connected at a substantially right angle behind the tube portion. The blower tube is a passage made of heat storage material,
A heat-generating resistive circuit made of a heat-resistant conductive paint is formed on the inner and outer circumferences, and a large-capacity capacitor for driving the blower motor is provided in the grip portion. The blower is heated by energy stored when the power supply is connected, and the blower motor is driven by the electric charge charged in the capacitor when the AC power supply is connected.

In the present invention, the cylindrical portion and the grip portion are connected to each other. In particular, the grip portion is connected to the cylindrical portion substantially at a right angle at the rear as in the conventional case, which approximates a pistol shape. The tube portion has an outlet and an inlet before and after, has a blower fan at the rear, sends air to the blower tube on the air outlet side, and discharges hot air from the outlet.

[0007] The blower cylinder has a heating means for heating the passing air. The blower cylinder has a large heat capacity and is made of a material such as asbestos powder or ceramic, and has a honeycomb structure in which hexagonal cylinders are assembled. It is a passage. A heat-generating resistance circuit drawn with a heat-resistant paint is interposed around the inner and outer circumferences of the heat-resistant insulating film. At the rear of the cylindrical portion, a grip portion is provided continuously at right angles, and a capacitor is filled in the grip portion. Of course, it has a plug terminal connected to the socket of the AC power supply.

[0008] The circuit configuration comprises a heat storage heater circuit and a motor drive circuit. The former includes a heat-generating resistor formed on the inner and outer circumferences of the blower cylinder, and a heat generation device that generates heat at 100 ° C and 80 ° C, for example. And a thermistor switch for turning the circuit on and off. It is desirable to provide a selection switch that can switch between high and low temperatures. Motor drive circuit is 10
A step-down transformer for lowering the AC output of 0 V to, for example, a voltage of 3 V, a rectifier circuit for rectifying the output, a large capacity for storing the output charge, for example, a semiconductor multilayer capacitor of 30 F, and an output of the capacitor via a switch. It consists of a blower fan motor to be driven.

In the present invention, when AC power is not connected,
The blower cylinder receives no new energy,
When the power supply is connected, the blower is heated by the energy generated by the heat, while the blower motor is driven by using the electric charge charged in the capacitor when the AC power supply is connected.

[0010]

Since the present invention is configured as described above, when the plug is connected to the AC power source and the selection switch is turned on,
The heat-generating resistive circuit generates heat to a predetermined temperature, and the heat is transmitted to a blower having a honeycomb structure having a high heat-storage property and heat is stored. For example, when the temperature reaches 100 ° C, the thermistor switch is activated, the heat storage heater circuit is shut off, and when the temperature drops to 80 ° C,
Turn on. As long as the AC power source is connected, such an operation is repeated, and heat is stored in the blower tube.

On the other hand, in synchronization with the input to the AC power supply, the voltage is lowered by the step-down transformer, and the electric charge converted to direct current by the rectifier circuit is instantaneously charged in a large-capacity capacitor. When using, remove the plug from the power socket and bring it to the place where you want to use it, such as a washroom without a power socket,
When the switch of the motor drive circuit is turned on, the discharge of the capacitor is started and the motor is driven. As a result, air is sent from the air intake to the air supply path, heated in the air supply path, and hot air is discharged from the output path to be used for hairdressing. Since the blower cylinder uses heat storage material, it keeps heat for a considerable time even if electric energy is not supplied to the heat-generating resistance circuit.During this time, if the blower motor is driven, hot air will be supplied from the blower port to the outside Is done.

[0012]

FIG. 1 is a schematic view of a cordless hair dryer according to the present invention with a case half removed.
Is a cordless hair dryer main body, 2 is a cylindrical portion, and 3 is a grip portion. Reference numeral 4 denotes an air intake port at the rear of the cylindrical portion 2, reference numeral 5 denotes an outlet at the tip of the cylindrical portion 2, and reference numeral 6 denotes a hood which is fitted to the outlet 5 to give directionality to the air flow. A blower fan 8 containing a motor 7 is provided inside the air intake 4, and before that, a blower tube 1 communicating with the outlet 5 through a guide tube 9.
0 is provided.

The blower cylinder 10 is made of a special alloy having a high heat storage property, has a honeycomb structure as shown in FIG. 2, and has an inner and outer periphery coated with an insulating paint, on which a heat-resistant heat-generating material is provided. A resistive electric circuit 17 is provided around the periphery. In the grip part 3,
Four capacitors 11 are provided. Reference numeral 12 denotes a plug connected to an AC power supply.

FIG. 3 is a circuit diagram in which the AC power supply 2 is connected, 13 is an AC power supply, 14 is a heat storage heater circuit, and 15 is a motor drive circuit. 16 is an exothermic resistance circuit 17
Is a thermistor switch for temperature control of the heat-generating resistance circuit 17.

The motor drive circuit 15 includes a step-down transformer 18, a rectifier circuit 19, a capacitor 11, and a capacitor 11.
, And a motor M driven by the discharge. Reference numeral 20 denotes a discharge switch.

[0016]

As described above, in the present invention, the motor is driven by the charging power to the condenser to blow air to the blower cylinder. The heating of the blower converts electric energy into heat while the AC power supply is connected. After the AC power supply is shut off, the air is stored in the storage heat state and the air is heated by the storage heat energy. Therefore, when blowing the hot air, only energy is required to drive the blower motor, and the power consumption is small. When connected to a power supply, the electric charge charged in the large-capacity capacitor can be covered for a long time.

The charging of the capacitor is completed almost instantaneously, so that the main body can be used.
This is the time required for the blower cylinder to reach a predetermined temperature by the supply of heat from the heat generating resistance circuit, and generally takes 10 minutes. In this point, the battery can be used much earlier than the battery.

Although the capacitor is somewhat bulky, it is much lighter than a large-capacity battery, and is convenient to carry for powerless women and the like. Further, there is an advantage that deterioration over time is less than that of a battery.

[Brief description of the drawings]

FIG. 1 is an outline view of a state where a case half is removed.

FIG. 2 is a partial perspective view of a blower cylinder.

FIG. 3 is an electric circuit diagram

[Explanation of symbols]

1-cordless hair dryer, 2-cylinder, 3-grip,
4-air intake, 5-outlet, 6-hood, 7-motor, 8-blast fan, 9-guide cylinder, 10-blast cylinder,
11-capacitor, 12-plug, 13-AC power supply, 1
4- Heat storage heater circuit, 15- Motor drive circuit, 16
-Selection switch, 17-heat-generating resistance circuit, 18-step-down transformer, 19-rectifier circuit, 20-switch for discharging, T
-Thermistor switch, M-motor

Claims (4)

[Claims] 1. A cylinder comprising a blower tube capable of heating a blower from a blower motor, and a gripper connected thereto,
The blower cylinder is a passage made of a heat storage material, and a heat-generating resistance circuit made of a heat-resistant conductive paint is formed on the inner and outer circumferences thereof, and a large-capacity capacitor for driving the blower motor is provided in a grip portion. A cordless hair dryer characterized in that when the AC power supply is not connected, the blower tube heats the blower with energy accumulated when the AC power supply is connected, and the blower motor is driven by the electric charge charged to the capacitor when the AC power supply is connected. 2. A cordless hair dryer according to claim 1, wherein said blower cylinder has a honeycomb structure. 3. The cordless hair dryer according to claim 1, wherein said blower cylinder is made of a material obtained by solidifying asbestos powder. 4. The cordless hair dryer according to claim 1, wherein said capacitor is a semiconductor multilayer capacitor.