KR19990009861A - Electric shock prevention hair dryer - Google Patents

Abstract

The present invention relates to an electric shock prevention hair dryer, comprising: a plug for transmitting a commercial power supply of a power supply unit, a rated voltage drop means connected to the plug to lower the commercial power to an electric shock voltage or less, and the rated voltage A driving motor connected to the dropping means to turn on / off an output voltage, a blower fan having both ends connected to the power switch and the rated voltage dropping means, and installed in front of the drive motor; By constructing an electric shock prevention hair dryer including a heater that heats the air introduced by the air to the set temperature, the commercial power supply of the power supply output to the hair dryer through the plug is lowered below the electric shock voltage, so that the hair dryer is inadvertently moved. In addition to preventing electrical leakage, electric shock can be prevented.

Description

Electric shock prevention hair dryer

The present invention relates to an electric shock prevention hair dryer, and more particularly, to an electric shock prevention hair dryer in which the rated voltage delivered to the hair dryer drops below the electric shock voltage to prevent electric shocks generated when the hair dryer is used. .

In general, a hair dryer applies commercial power from a power supply to a device to heat the air sucked from the outside to convert it into hot air, and blows it out in front of the device to remove water from the hair in a short time. Or a type of electrical device for setting the user's head to the desired style.

1 is a view schematically showing a circuit diagram of a general hair dryer, wherein the hair dryer 10 has a plug 11 for supplying commercial power and a commercial power applied to the plug 11 to be turned on. The power switch SW to turn on / off, and a drive motor 12 connected at both ends to the plug 11 and the power switch SW to rotate at a set rotational speed (rpm) when the power switch SW is energized. And a heater 14 which generates heat at a set temperature, and a blower fan 13 is coupled to the rotating shaft of the driving motor 12 to induce the flow of air by sucking external air into the hair dryer 10. do.

The plug 11 and the power switch SW are normally disposed on the main body constituting the external structure of the hair dryer 10 and the front surface of the handle portion hinged to the main body so as to be foldable, and the driving motor 12 and the blowing air. The fan 13 is mounted in the main body having an air passage in which suction and discharge ports for sucking air and discharging at the same time are connected to the front and rear ends.

In the conventional hair dryer configured as described above, the plug 11 is plugged into a power supply unit (not shown), and then pressurized and turned on by pressing the power switch SW mounted on the front of the handle part. As the driving motor 12 and the heater 14 are directly energized through the driving motor 12, the driving motor 12 is rotated at a set rotation speed and the heater 14 generates heat at a set temperature.

Thereafter, as the blower fan 13 coupled to the rotary shaft of the drive motor 12 rotates, the air introduced along the air passage of the main body through the suction port is heated by hot air by heat generated by the heater 14. The blower 14 is discharged to the discharge port side again to dry the wet hair and the like.

However, in the conventional hair dryer configured as described above, since the commercial power (AC 220V) delivered through the plug is energized by the direct drive motor and the blower fan, the hair dryer is dropped in the water around the user or a small amount of water. There was a problem in that an electric leakage occurred as well as an electric shock caused when entering the main body through the suction and discharge ports.

The present invention is to solve the above problems, an object of the present invention by lowering the commercial power supply of the power supply unit output to the hair dryer through a plug to less than the electric shock voltage (DC 45V or AC 30V), careless use of the hair dryer In addition to preventing electrical leakage due to comfort, to provide an electric shock prevention hair dryer that can prevent an electric shock accident in advance.

1 is a circuit diagram schematically showing the flow of a typical air dryer,

2 is a circuit diagram showing an electric shock prevention hair dryer according to the present invention.

Explanation of symbols on the main parts of the drawings

10: hair dryer 11: plug

12: drive motor 13: air blowing fan

14 heater 20 lottery-type AC transformer

SW: Power Switch T: Transformer

L1, L2: Winding Coil

The present invention for achieving the above object, and a plug for transmitting the commercial power of the power supply; A rated voltage drop means connected to the plug and provided to drop a commercial power supply below an electric shock voltage; A power switch connected to the rated voltage drop means to turn on / off an output voltage; A driving motor having a blower fan coupled to each of the power switches and the rated voltage drop means; It is achieved by including a heater installed in front of the drive motor for heating the air introduced by the blowing fan to a set temperature.

Rated voltage drop means according to a preferred embodiment of the present invention is achieved by a lottery-type AC transformer for outputting the primary output voltage of the power supply unit delivered through the plug to the electric shock voltage of DC 45V or AC 30V or less .

The lottery-type AC transformer according to a preferred embodiment of the present invention is achieved by a winding coil to which the plug is connected, a winding coil wound one-to-one with respect to the winding coil, and a transformer positioned between the winding coils.

The lottery-type AC transformer according to a preferred embodiment of the present invention is achieved by coating a waterproof member so as to be electrically insulated.

Hereinafter, a preferred embodiment of the electric shock prevention hair dryer according to the present invention will be described in detail with reference to the accompanying drawings.

2 is a view illustrating a hair dryer according to the present invention, which is connected to a plug 11 and a plug 11 for transferring the commercial power of the power supply unit to the hair dryer 10 to lower the rated voltage of the commercial power source. A power supply switch (SW) for turning on / off the rated voltage dropping means and the output voltage drop connected thereto, and a driving motor (12) connected to both ends of the plug (11) and the power switch (SW) and its Blower fan 13 coupled to the rotating shaft, and the drive motor 12 is provided in front of the heater 14 for heating the outside air introduced through the suction port to a set temperature.

Rated voltage drop means is a lottery-type AC transformer 20 for dropping the primary output voltage of the power supply unit transmitted through the plug 11 to less than the electric shock voltage, this lottery-type AC transformer 20 is a transformer ( T) and a plurality of winding coils L1 and L2 wound one-to-one around the ocean, and the lottery-type AC transformer 20 is covered with a waterproof member to be electrically heated to be sealed.

Referring to the operation of the electric shock prevention hair dryer according to the present invention configured as described above in detail.

When the power switch (SW) is turned on, the commercial power of AC 220V input to the lottery-type AC transformer 20 through the plug 11 plugged into the power supply unit is wound coil L1 and L2 wound up against the transformer T. The secondary output voltage is energized to the driving motor 12 and the heater 14 while falling below the electric shock voltage. At this time, the lottery-type AC transformer 20 can be lowered below the DC 45V or AC 30V, which is an electric shock prevention voltage, according to the winding ratio of the winding coil L1 or L2, and the driving motor 12 and the heater 14 are output voltages. Design to be operable.

Thereafter, the air blown into the air passage through the suction port is heated by the heat generated by the heater 14 while the air blow fan 13 coupled to the rotary shaft of the driving motor 12 to which the secondary output voltage is applied is rotated. Since it is forcibly discharged to the discharge port side by the blowing force of the blower 13, it is possible to eliminate the electric shock accident due to the use of the hair dryer.

Here, the lottery-type AC transformer 20, which is a rated voltage drop means used for the electric shock prevention hair dryer of the present invention, is installed on the handle side of the hair dryer so as to prevent the electric shock from the output voltage applied from the power supply unit. It can be applied to all hair dryers by dropping below voltage and spaced apart from the hair dryer.

According to the electric shock prevention hair dryer according to the present invention as described above, by dropping the commercial power supply of the power supply unit output to the hair dryer through the plug to less than the electric shock voltage to prevent electrical leakage due to the minor surroundings when using the hair dryer. This prevents electric shock accidents.

Although specific embodiments of the present invention have been illustrated and described above, the present invention is not limited to the above-described embodiments, and the present invention is not limited to the scope of the present invention as claimed in the claims. Anyone of ordinary skill in the art will be able to implement various modifications.

Claims (4)

A plug for transmitting commercial power of the power supply unit; A rated voltage drop means connected to the plug and provided to drop a commercial power supply below an electric shock voltage; A power switch connected to the rated voltage drop means to turn on / off an output voltage; A driving motor having a blower fan coupled to each of the power switches and the rated voltage drop means; The electric shock prevention hair dryer, characterized in that it comprises a heater installed in front of the drive motor to heat the air introduced by the blowing fan to a set temperature. The electric shock reduction method according to claim 1, wherein the rated voltage drop means is a lottery-type AC transformer for outputting a primary output voltage of the power supply unit transferred through the plug to an electric shock voltage of DC 45V or AC 30V or less. Resistant hair dryer. The winding transformer L1 of claim 2, wherein the winding coil L1 to which the plug is connected, the winding coil L2 wound one-to-one with respect to the winding coil L1, and the winding coils L1 and L2. Electric shock prevention hair dryer, characterized in that consisting of a transformer positioned between. The electric shock prevention hair dryer of claim 3, wherein the lottery-type AC transformer is coated with a waterproof member so as to be electrically insulated.