JPH05192216A - Hair drier - Google Patents

Abstract

PURPOSE:To exactly measure a hair temperature by non-contact. CONSTITUTION:In the hair drier provided with a temperature measuring means 1 for measuring a temperature of hair by non-contact, and a control means for controlling an air temperature or an air quantity in accordance with whether the hair temperature detected by this temperature measuring means 1 is high or low, the temperature measuring means 1 for measuring a temperature by condensing radiation energy emitted from hair to a temperature detecting element 11 by a lens 12 uses that which makes a prescribed angle by an optical axis before passing through the lens and an optical axis after passing through the lens, as the lens 12.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hair dryer, and more particularly to a hair dryer having a temperature measuring means for measuring hair temperature in a non-contact manner and controlling the air temperature and the air volume according to the output of the temperature measuring means. It is a thing.

[0002]

2. Description of the Related Art A hair dryer is equipped with a monitoring means for monitoring the temperature of the air so that the temperature of the air does not become too high. Raises more than necessary and hurt your hair.
For this reason, there is disclosed a device in which a temperature measuring means for measuring the temperature of hair in a non-contact manner is provided and the air temperature or the air volume is controlled according to the height of the hair temperature detected by the temperature measuring means. No. 168605.

[0003]

However, in the device disclosed in the above publication, the temperature measuring direction of the temperature measuring means formed by the infrared detecting device and installed outside the air blowing port is parallel to the air blowing direction. Therefore, there is a gap between the part of the hair that is heated the most by the hot air blowing and the part where the temperature is measured in a non-contact manner, which causes the hair to become too hot and hurt. There is.

The present invention has been made in view of the above circumstances, and an object thereof is to provide a hair dryer provided with a temperature measuring means capable of accurately measuring the hair temperature in a non-contact manner. is there.

[0005]

SUMMARY OF THE INVENTION The present invention, therefore, provides a temperature measuring means for measuring the temperature of hair in a non-contact manner, and controls the air temperature or the air volume according to the level of the hair temperature detected by the temperature measuring means. In the hair dryer equipped with the control means for controlling the temperature, the temperature measuring means for concentrating the radiant energy emitted from the hair on the temperature detecting element by the lens is a lens, and the optical axis before passing through the lens and the light after passing through the lens are used. The main feature is that the shaft forms a predetermined angle.

According to the present invention, it is possible to measure the temperature of the hair, which is most heated by the warm air blowing, by the temperature measuring means.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the illustrated embodiment. In this hair dryer, as shown in FIG. 1, a fan 3 driven by a motor 2 and a heater 4 for heating air blown by the fan 3 are provided. In addition to the above, the temperature measuring means 1 for measuring the hair temperature in a non-contact manner by detecting the radiant energy emitted by the hair and converting it into an electric signal is provided. Reference numeral 5 in the figure denotes a nozzle that is detachably attached to the blower opening. In addition to the power switch button 61, a drying / set changeover switch 62, an air temperature / air volume changeover switch 63, and a slide plate 64 for selectively operating both the switches 62, 63 are provided on the front surface of the handle portion. It is provided.

The temperature measuring means 1 comprises a heater 4 in a wind tunnel.
It is arranged on the lower side of the portion containing. The temperature measuring means 1 here includes a substrate 10, a temperature detecting element 11 composed of a pyroelectric element fixed on the substrate 10, a lens 12 attached to one end of the substrate 10 and focused on the temperature detecting element 11, A cylinder 13 that surrounds the lens 12 and the temperature detecting element 11, a thermistor 14 for measuring the ambient temperature of the temperature detecting element 11, and a chopper mechanism that periodically cuts off radiant energy incident on the temperature detecting element 11. And 15 are formed.

The chopper mechanism 15 is composed of a thin metal plate and has a vibrating plate 16 whose front end is bent to form a light shielding piece 17, and a vibrating plate 1 whose base end is fixed to the substrate 10.
It is formed as a unimorph mounted on 6 or a Viborg oscillator (not shown). The light-shielding piece 17 of the vibration plate 16 always receives the radiant energy collected by the lens 12 from the temperature detecting element 1.
However, when a voltage is applied to the vibrator, the vibrating plate 16 bends and the light blocking piece 17 covers the front surface of the temperature detecting element 11 as shown by the broken line in FIG. It is prevented from entering the temperature detection element 11.

Here, as shown in FIG. 5, in the lens 12 that collects the radiant energy emitted from the hair to the temperature detecting element 11, the optical axis before passing and the optical axis after passing are angled, as in the peripheral portion of the convex lens. θ is formed, and the temperature measurement area A in the temperature measuring means 1 is directed toward the air blowing direction from the air blowing port. In the illustrated example, the intersection of the blast axis and the temperature measurement area A is
The distance is approximately 10 cm from the tip surface of the blower port and 3 cm from the tip of the nozzle 5.

For this reason, in this hair dryer, when the hair is heated by the hot air discharged from the air outlet, the part of the hair that is heated most by the hot air and the part where the temperature measuring means 1 detects the temperature. Therefore, the pain due to overheating of the hair can be reliably prevented by controlling the air temperature or the air volume by the temperature measuring means 1. Reference numeral 66 in FIG. 4 is a microcomputer for controlling the air temperature or the air volume according to the output of the temperature detecting element 11, and is arranged in the vicinity of the temperature measuring means 1.

FIG. 6 shows another embodiment. This allows the temperature measuring means 1 to be swung up and down by a shaft 8, and the drying / set changeover switch 62 provided on the handle portion of the hair dryer and the temperature measuring means 1 are connected to the wire 8.
When the dry / set changeover switch 62 is dry, the temperature / measurement area A is located at a distance L from the tip of the blower opening, but the dry / set changeover switch 62 is set to the set. If so, the temperature measuring means 1
The tip side of the wire is pushed up by the wire 81, the mounting angle is changed, the temperature measurement area moves to the place indicated by A'in the figure, and the distance from the blower opening to the temperature measurement area A'is the distance L when the above is dry. The length L'is shorter. This is because, when the hair is dried, the hair dryer is used in a state of being relatively separated from the hair, but when the hair is set, the hair dryer is used in a state of being brought closer to the hair. .. As shown in FIG. 7, the temperature measuring means 1 may be slid forward and backward in response to the switching of the drying / setting changeover switch 62.

FIG. 8 shows another embodiment. This is because the projecting piece 51 is integrally projected from the nozzle 5 which is detachably attached to the blower port, and when the nozzle 5 is mounted, the temperature measuring means 1 is pushed downward by the projecting piece 51 and rotates downward about the shaft 8. Then the temperature measurement area A becomes far, and if the nozzle 5 is removed,
The mounting angle of the temperature measuring means 1 is changed according to the attachment / detachment of the nozzle 5 so that the temperature measuring means 1 returns to the state shown by the broken line in the figure so that the temperature measuring area A becomes closer. .. In the structure shown in FIG. 9, when the nozzle 5 is attached, the temperature measuring means 1 which is slidable forward and backward and biased rearward is pushed by the wire 82 and moved forward. It shows what was done.

FIG. 10 shows still another embodiment. The bimorph element 85 is attached to the temperature measuring means 1 supported by the shaft 8 so that the temperature measuring means 1 swings up and down according to the energization of the bimorph element 85 so that the temperature measuring area A moves. It shows what was done. The energization control to the bimorph element 85 is performed by providing a separate switch. As the switch, the hair / set changeover switch 62 may be used, or a switch that is turned on / off according to the attachment / detachment of the nozzle 5 may be used.

[0015]

As described above, in the present invention, the temperature of the hair, which is most heated by the warm air blowing, can be measured by the temperature measuring means, and therefore the temperature measuring means is provided. Nevertheless, it is possible to reliably prevent the situation in which the hair is heated and hurt.

According to the second and third characteristics, the temperature measurement area can be located at a position suitable for actual use depending on whether the operation mode is the dry mode or the set mode. Therefore, it is possible to prevent a situation in which proper temperature measurement cannot be performed depending on the operation mode. Further, according to the fourth and fifth features, the temperature measurement area can be set at an appropriate position depending on whether or not the nozzle is attached, and the temperature can be appropriately measured depending on the presence or absence of the nozzle. It is possible to prevent the situation from disappearing.

According to the sixth feature, it is possible to easily change the temperature measurement area.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of an embodiment.

2 (a) and 2 (b) are front views of the handle portion of the same.

FIG. 3 is a cross-sectional view.

FIG. 4 is an enlarged cross-sectional view of temperature measuring means.

FIG. 5 is an explanatory diagram of a lens.

FIG. 6 is a vertical cross-sectional view of another embodiment.

FIG. 7 is a vertical cross-sectional view of still another embodiment.

FIG. 8 is a vertical cross-sectional view of another embodiment.

FIG. 9 is a vertical cross-sectional view of still another embodiment.

FIG. 10 is a vertical cross-sectional view of another embodiment.

[Explanation of symbols]

 1 Temperature Measuring Means 11 Temperature Detection Element 12 Lens

Claims (6)

[Claims] 1. A hair dryer comprising temperature measuring means for measuring the temperature of hair in a non-contact manner, and control means for controlling the air temperature or the air volume according to the height of the hair temperature detected by the temperature measuring means. As the temperature measuring means for measuring the temperature by condensing the radiant energy emitted from the hair on the temperature detecting element by the lens, use a lens whose optical axis before passing through the lens and optical axis after passing through the lens form a predetermined angle. A hair dryer characterized by having. 2. A hair dryer comprising temperature measuring means for measuring the temperature of hair in a non-contact manner and control means for controlling the air temperature or the air volume according to the level of the hair temperature detected by the temperature measuring means. A hair dryer characterized by comprising switching means for switching the operation mode between the drying mode and the set mode, and interlocking means for changing the mounting angle of the temperature measuring means according to the switching means. 3. A hair dryer comprising temperature measuring means for measuring the temperature of hair in a non-contact manner, and control means for controlling the air temperature or the air volume according to the level of the hair temperature detected by the temperature measuring means. A hair dryer characterized by comprising switching means for switching the operation mode between the drying mode and the set mode, and interlocking means for changing the position of the temperature measuring means according to the switching means. 4. A hair dryer comprising temperature measuring means for measuring the temperature of hair in a non-contact manner and control means for controlling the air temperature or the air volume according to the level of the hair temperature detected by the temperature measuring means. A hair dryer characterized in that it has a detachable nozzle at the air outlet and an interlocking means for changing the mounting angle of the temperature measuring means according to the attachment / detachment of the nozzle. 5. A hair dryer comprising temperature measuring means for measuring the temperature of hair in a non-contact manner, and control means for controlling the air temperature or the air volume according to the height of the hair temperature detected by the temperature measuring means. A hair dryer characterized in that it has a detachable nozzle at the air outlet and an interlocking means for changing the position of the temperature measuring means according to the attachment / detachment of the nozzle. 6. A hair dryer comprising temperature measuring means for measuring the temperature of hair in a non-contact manner, and control means for controlling the air temperature or the air volume according to the level of the hair temperature detected by the temperature measuring means. A hair dryer characterized in that an attachment angle of the temperature measuring means is variable by an electrostrictive element.