JPS5812610A - 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 The present invention relates to a hair dryer having an attachment such as a brush or a comb attached to the outlet.

In such hair dryers, when a lot of hair is wrapped around the attachment, the hot air outlet is blocked and the heater temperature rises abnormally, which may deform the attachment or main body housing. A thermoswitch was installed that detected a rise in temperature and cut off the power to the heater.Moreover, to ensure safety, the thermoswitch was designed to detect even the slightest abnormal temperature rise and operate quickly.

However, with the conventional configuration described above, the thermoswitch is activated as soon as a little too much hair is wrapped due to safety considerations, and the switch switches from hot air to cold air, resulting in a problem in that it takes a long time to dry and style the hair. There was a point.

The present invention was made in view of the above-mentioned problems, and its purpose is to provide a hair dryer that ensures safety, shortens drying and hair styling time, and improves usability.

Embodiments of the present invention will be described below based on the drawings.

FIG. 1 shows an external view of the hair dryer, and FIG. 2 shows a sectional view of the main body of the hair dryer.
and a heater 6, and a brush attachment 7 is detachably attached to the discharge port. The heater 6 has a heater wire 8 wound around a cross-shaped heater board 17, and a first thermoswitch 9 is disposed at the front of the heater 6, where it is well exposed to hot air and is easy to detect abnormal temperature rises. A second thermoswitch 10 having the same operating temperature characteristics as the first thermoswitch 9 is disposed at the rear of the heater 6 where the temperature rise is small. Further, FIG. 8 shows a circuit diagram, in which the heater wire 8 is divided into two parts to form a first heater 8.
a and a second heater 8b, the first heater 8a and the second heater 8b are connected in parallel, and the first heater 8a
The first thermo switch 9 is connected in series to the heater circuit 1.
1, a second thermoswitch 10 is connected in series to the heater circuit 11, and a motor circuit 12 is connected in parallel.

The motor circuit 12 is configured to supply current to the motor 4 via a voltage dividing resistor 13 for reducing the applied voltage and a rectifier 14. 15 is a hot air, cold air, and power on/off switch (8), and 16 is a temperature fuse that shuts off the entire circuit when the temperature rises abnormally.

Therefore, when a large amount of hair is wrapped around the brush attachment 7 during use and the temperature rises, the first thermoswitch 9 disposed at the front of the heater with high temperature detection sensitivity is activated.
operates first to cut off the power supply to the first heater 8a, reducing power consumption and preventing deformation of the main body housing 8, brush attachment 7, etc. Moreover, since hot air is still being discharged, this Even in this state, you can dry and style your hair. Further, although the second thermoswitch 10 has the same operating temperature characteristics as the first thermoswitch 9, it does not operate in the above-mentioned conditions, for example, if the rotation of the motor 4 is slowed down or the first thermoswitch It is activated in the event that the switch 9 malfunctions, and is intended to prevent fires, etc., and the first thermoswitch 9 and its installation position are shifted to the front and back of the heater 6 with respect to the air blowing direction. By delaying the operation timing, a common thermoswitch can be used.

(4) In the above embodiment, the arrangement position of the second thermoswitch 10 is shifted back and forth in order to delay the operation of the first thermoswitch 9, but thermoswitches with different operating temperatures may be placed in the same position. may be installed in parallel.

As described above, the present invention provides a heater circuit in which first and second heaters are connected in parallel and a first thermoswitch is connected in series to the first heater, and a second heater circuit in which a first thermoswitch is connected in series to the first heater. The present invention includes a thermoswitch and a motor circuit connected in parallel to the heater circuit, and the second thermoswitch is turned off with a delay compared to the first thermoswitch. Even when used wrapped, power consumption is reduced, preventing deformation of the main body housing, attachments, etc., ensuring safety.Furthermore, since hot air is emitted, hair can be continuously dried and styled. The time required for hair styling can be greatly shortened compared to conventional ones, making it easier to use.Furthermore, if the motor locks or the first thermoswitch malfunctions, the second (5th) thermoswitch will operate. This has the effect of ensuring safety.

[Brief explanation of the drawing]

FIG. 1 is an external view of a hair dryer showing an embodiment of the present invention;
FIG. 2 is a sectional view of the main body of the hair dryer, and FIG. 8 is a circuit diagram of the hair dryer. 8a...first heater, 8b...second heater, 9...
1st thermoswitch, 10.. 2nd thermoswitch, 11.. heater circuit, 120 motor circuit. Patent applicant Matsushita Electric Works Co., Ltd. Representative patent attorney Toshimaru Takemoto (and 2 others) (6)

Claims (1)

[Claims] 1), the first and second heaters are connected in parallel, and the first
a heater circuit comprising a first thermoswitch connected in series to the heater; a second thermoswitch connected in series to the heater circuit; and a motor circuit connected in parallel to the heater circuit; A hair dryer characterized in that a second thermoswitch is turned off with a delay compared to the first thermoswitch. 2) The first thermoswitch is disposed at the front of the heater with respect to the air blowing direction, and the second thermoswitch is disposed at the rear of the heater. hair dryer.