JP2750487B2 - Hair dryer - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hair dryer capable of irradiating far infrared rays.

[0002]

2. Description of the Related Art A hair dryer of this type has been proposed, for example, in Japanese Utility Model Laid-Open No. 62-109004. As shown in FIGS. 11 (a) and 11 (b), this constitutes an outlet grille 20 to which a far-infrared radiating substance is attached, and this outlet grille 20 is disposed in the hot air outlet 2 of the main body case 1. By irradiating the hair with far-infrared rays by warm air, the hair can be dried quickly, and the blood circulation of the scalp can be promoted.

[0003]

However, in the outlet grille 20 having the far-infrared radiating substance attached thereto, a problem arises when the irradiation amount is to be increased in order to enhance the efficiency of far-infrared rays. That is, the outlet grille 20 is provided to protect the user from danger and to prevent damage to the built-in components. It is necessary to increase the total area of the outlet grille 20 in order to increase the number of air outlets. For this purpose, the grid ribs 21 of the outlet grill 20
Needs to be set large. However, when the grid rib width H is increased in such a manner, the size of each ventilation hole 22 surrounded by the grid ribs 21 is reduced, the ventilation resistance is increased, and sufficient blowing is not performed. There is a problem that a stuck phenomenon occurs.
However, if the grid rib width H of the outlet grille 20 is reduced in order to reduce the ventilation resistance, the irradiation amount of far infrared rays tends to be insufficient. As described above, it is desirable to reduce the grid rib width H from the viewpoint of airflow resistance, and a trade-off relationship is required to increase the grid rib width H from the viewpoint of far-infrared radiation.

Further, since the outlet grille 20 having the far-infrared radiating substance attached thereto is formed in a flat plate shape, when an external force pressing the outlet grille 20 from the front side is applied thereto, the outlet grille 20 is not provided. The flat-plate-shaped outlet grille 20 may be bent due to a couple (bending moment) formed by the reaction force generated at the fulcrum at the peripheral edge of the plate and the external force. This deformation becomes remarkable when the outlet grill 20 is made thinner for the purpose of reducing the weight or improving the workability. In addition, when the outlet grille 20 is bent and deformed as described above, there is a problem that when the surface of the grille 20 is coated with the far-infrared ray emitting material, the far-infrared ray emitting material is easily peeled off.

[0005] Such a problem is not limited to the above-described grille-type in which the far-infrared ray radiating substance is attached to the outlet grille 20 as described above. The same applies to the case where a similar porous far-infrared radiation plate is formed and arranged side by side on the outlet grill.

SUMMARY OF THE INVENTION It is an object of the present invention to increase the amount of far-infrared radiation of a far-infrared radiation plate disposed on the outlet side in the above-mentioned far-infrared irradiation type hair dryer and to suppress the occurrence of bending deformation. On the point.

[0007]

In the hair dryer of the present invention, a far-infrared radiation plate 6 having a large number of ventilation holes 7 and lattice ribs 8 surrounding each ventilation hole 7 as shown in FIG. And the entire surface of the far-infrared radiation plate 6 is formed in a dome shape, and the surface of each of the large number of lattice ribs 8 is arranged.
Is formed on a convex curved surface 11 which is convex toward the outside of the outlet .

[0008]

By forming the entire far-infrared radiation plate 6 in a dome shape, the surface area thereof can be increased as compared with the case where the far-infrared radiation plate 6 is formed in a plate shape, and the width H of the grid rib 8 can be increased. That is, the far-infrared irradiation area can be increased without reducing the opening size of each ventilation hole 7, and the irradiation amount is increased. The far-infrared radiating plate 6 formed entirely in a dome shape has increased rigidity against a bending moment, and therefore less warping due to an external force applied from the front side. Blowing of grid ribs 8 of far-infrared radiation plate 6
When the surface facing the outside of the exit is formed as a convex curved surface 11,
It is just to form the whole of the external radiation plate 6 in a dome shape
The far-infrared irradiation area can be further increased
Can increase. In addition, the flow of the wind is smooth on the surface of the convex curved surface 11.
The occurrence of turbulence at the time is also eliminated.

[0009]

1 to 4, reference numeral 1 denotes a main body case of a hair dryer, 2 denotes an air outlet provided at a front end of the main body case 1, 3 denotes a suction port provided at a rear end of the main body case 1, and 4 denotes a main body case. A heater 5 housed inside 1 is a blower fan arranged behind the heater 4 in the main body case 1. A far-infrared radiation plate 6 also serving as an outlet grill is provided at the outlet 2 of the main body case 1. The far-infrared radiating plate 6 has a large number of ventilation holes 7 and lattice ribs 8 surrounding each of the ventilation holes 7, and is entirely formed in a dome shape. Coated.

More specifically, the far-infrared radiation plate 6 is manufactured as follows. First, a metal plate is pressed to obtain a dome-shaped base member 9 having a large number of holes as shown in FIG. This base material 9 is degreased. Next, the base material 9 is primarily immersed in a solution or dispersion liquid of a far-infrared ray radiating substance and air-dried. After further secondary immersion and natural drying, far-infrared radiation plate 6 is obtained by forced drying at a predetermined temperature.

An example of the components of the solution or dispersion of the far-infrared radiating substance is a mixture of powder of the far-infrared radiating substance, an organic binder of 67% and a solvent of 33%. As the powder of the far-infrared radiating substance, for example, ceramics such as zirconia and alumina silicon carbide are used as powder, and the particle diameter is 10 to 50 μm. As the organic binder, a urethane-based binder is preferable.

The base member 9 may be made of a metal such as iron or aluminum, or a synthetic resin (especially a synthetic resin such as polycarbonate having excellent heat resistance), but is preferably a material having a large specific heat such as iron. This is because, when the base material 9 is made of a material having a large specific heat, the far-infrared ray emitting material film 10 is uniformly heated from the inside of the cross section to the outside, so that the irradiation efficiency can be further increased. On the other hand, when the base material 9 is made of resin, the far-infrared radiation material film 10 is used.
Is heated only by the warm air flowing through the surface, and as shown in FIG. 1, the temperature at the point A at the leeward center tends to decrease, and the irradiation efficiency deteriorates. Further, the base material 9 made of resin has low heat retention and heat conductivity, is directly affected by the temperature distribution of the hot air, and the irradiation amount at the center of the far-infrared radiation plate 6 and in the vicinity of the outer periphery of the far-infrared radiation plate 6 varies. It is easy to happen.

As described above, the far-infrared radiation plate 6 obtained by forming the far-infrared radiation material film 10 on the surface of the base member 9 has a cross-sectional shape which is entirely convex toward the outside of the outlet. 14B, the surface area thereof can be increased as compared with the surface area of the outlet grille 20 formed in a flat plate shape as shown in FIG. Irradiate a large amount toward the outside of. Further, since the entire far-infrared radiation plate 6 is formed in advance in one direction like a dome shape, the far-infrared radiation plate 6
Even if an external force is applied to press the far-infrared radiating material film 10 from outside, deformation such as peeling of the far-infrared emitting material film 10 can be eliminated. The same applies to the case where the dome-shaped protruding side faces the inside of the main body case 1 in the opposite direction. The far-infrared emitting material film 10 that is applied by dip coating on the surface of the dome-shaped base material 9
The thickness t of the peripheral mounting portion 14 can be formed smaller than the thickness T of the far-infrared radiating material film 10 at the center of the plate surface. In such a case, the rigidity of the far-infrared radiation plate 6 at the center of the plate surface, which is particularly susceptible to external force, can be further increased.
As shown in FIG. 3, the far-infrared radiation plate 6 is bent when the far-infrared radiation plate 6 is press-fitted into the groove 16 on the inner wall of the outlet 2 of the main body case 1.
If the thickness t of the film 4 is large, it is difficult to bend and it is difficult to securely fit and fix it. When the thickness t of the peripheral mounting portion 14 is large, the portion of the main body case 1 that is in contact with the inner wall is irradiated with far-infrared rays, and the temperature of the relevant portion of the main body case 1 is increased more than necessary. There is a problem that thermal deformation is likely to occur due to the rise, but such a problem can be solved by reducing the film thickness t of the peripheral mounting portion 14.

In the cross-sectional shape of the grid rib 8 itself of the far-infrared radiation plate 6, the film 10 formed on the surface of the grid rib 8 on the side facing the outside of the outlet is convex toward the outside of the outlet. It is formed on the convex curved surface 11, whereby the surface area can be further increased. Therefore, the warm air from the heater 4 is
1, the far-infrared rays irradiate a larger amount toward the outside of the outlet 2 by an amount corresponding to the increase of the surface area by the convex curved surface 11. Sides 12 of the lattice rib 8 facing the ventilation holes 7
And the back surface 13 facing the inside of the air outlet is a place where the degree of contribution to improving the irradiation efficiency is low, and the film thickness on each of the surfaces 12 and 13 is formed thinner than the film thickness on the convex curved surface 11 so that the ventilation holes While ensuring the opening size of 7 as large as possible, economical application is possible. Further, if the edge 15 is provided toward the inside of the outlet in the cross-sectional shape of the lattice rib 8 itself of the far-infrared radiation plate 6, the edge 15 is coated with a solution of the far-infrared radiation material or This is advantageous because the liquid-discharging action of the dispersion can be exhibited.
The edge 15 can be easily obtained by pressing the base material 9 with a metal plate. In the case where the base material 9 is formed of a metal plate, a metal plate that has been subjected to plating such as neutralization or non-neutralization plating or nickel plating may be used.

FIG. 5 shows a grid rib 8 of the far-infrared radiation plate 6.
This shows a modified example of the cross-sectional shape of FIG. 6, in which the base material 9 itself is formed in an arc-shaped cross-section, and a far-infrared radiating material film 10 is applied to this surface.

FIGS. 6 and 7 both show still another embodiment of the cross-sectional shape of the grid rib 8 of the far-infrared radiation plate 6. FIG. FIG. 6 shows that the surface of the base material 9 is formed on the rough surface 18 and the far-infrared ray emitting material film 10 is applied to the rough surface 18. FIG.
Indicates that the surface of the base material 9 has a particle diameter (10
-50 μm), and a far-infrared radiating substance film 10 is applied to the surface after forming the larger irregularities 19.
According to these, the effect of preventing the far-infrared radiating material film 10 from peeling can be enhanced, and the adhesion can be enhanced.

FIG. 8 shows still another embodiment of the cross-sectional shape of the lattice rib 8 of the far-infrared radiating plate 6. The far-infrared ray is formed by forming the base material 9 from foamed metal or foamed plastic to make it porous. The radiation material film 10 penetrates the surface and adheres firmly.

FIGS. 9 and 10 show still another modified embodiment of the cross-sectional shape of the grid rib 8 of the far-infrared radiation plate 6. FIG. The lattice rib 8 of the embodiment shown in FIG. 9 is formed to have an elliptical cross section, and the surface of the far-infrared radiating material film 10 applied to the base material 9 having a quadrangular cross section is not only the surface facing outward of the outlet but also the inside The surface facing in the direction is also formed as the convex curved surface 11. The lattice rib 8 in the embodiment shown in FIG. 10 is formed in a circular cross section, and is formed by applying a far-infrared radiating material film 10 to a base material 9 having a circular cross section with a substantially uniform thickness over the entire circumference. By forming the surface of the lattice rib 8 facing the inside of the air outlet on the convex curved surface 11 as well, not only the noise due to the turbulence of the warm air can be prevented, but also the contact time between the warm air and the lattice rib 8, that is, The thermal conductivity increases, and the irradiation amount of far infrared rays can be further increased.

In the present invention, the far-infrared radiation plate 6 is
In addition to the one that also serves as the outlet grille as in the above embodiment,
Far infrared radiation plate is formed independently from the outlet grille
This is used side by side with the outlet grille
It may be. The far-infrared radiation plate 6 is
Instead of being arranged inside the outlet 2 of the
When attaching the blowout nozzle N to the main body case 1
It may be arranged inside the blow-out nozzle N. Furthermore, far-infrared
The external radiation plate 6 is a far-infrared radiation material without the base material 9
It may be formed only by molding.

[0020]

【The invention's effect】 Far-infrared radiation hair dryer of the present invention
The entirety of the far-infrared radiation plate 6 arranged on the outlet 2 side
Was formed in a dome shape. Therefore, the far infrared radiation plate 6
Surface area can be increased to increase the amount of far-infrared radiation.
Wear. Moreover, the size of the opening of the ventilation hole 7 is large for ventilation resistance.
Low airflow resistance
Can be provided, and a sufficient blowing can be secured.
It is possible to prevent the occurrence of the heat retention phenomenon in the source 1. Also far
The whole of the infrared radiation plate 6 is formed in a dome shape.
Increase rigidity and prevent warping and bending due to external force.
Of the far-infrared radiation material film 10 applied to the surface of
It can also exhibit the effect of preventing falling off. Further, the far-infrared radiation plate 6
Of the lattice ribs 8 projecting outward from the outlet
Is formed on the convex curved surface 11 so that
The irradiation area can be increased and the irradiation amount can be increased.
And the flow of wind on the surface of the convex curved surface 11 is smooth and turbulent.
This is advantageous without any occurrence.

[0021]

[Brief description of the drawings]

FIG. 1 is a sectional view of a far infrared radiation plate of a hair dryer.

FIG. 2 is a front view of a far-infrared radiation plate of a hair dryer.

FIG. 3 is a side view showing a cut-out portion of an outlet of a hair dryer.

FIG. 4 is a sectional view of a base material of a far infrared radiation plate of a hair dryer.

FIG. 5 is a cross-sectional view of a part of a far-infrared radiation plate of another embodiment.

FIG. 6 is a cross-sectional view of a part of a far-infrared radiation plate of another embodiment.

FIG. 7 is a cross-sectional view of a part of a far-infrared radiation plate of another embodiment.

FIG. 8 is a cross-sectional view of a part of a far-infrared radiation plate of another embodiment.

FIG. 9 is a cross-sectional view of a part of a far-infrared radiation plate of another embodiment.

FIG. 10 is a cross-sectional view of a part of a far-infrared radiation plate of another embodiment.

11 shows a conventional hair dryer, and FIG.
1 (a) is a front view, and FIG. 11 (b) is a part of an outlet grill.
FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main body case 2 Outlet 6 Far-infrared radiation plate 7 Ventilation hole 8 Grid rib

Claims (1)

(57) [Claims] 1. A hair dryer in which a far-infrared radiation plate 6 having a large number of ventilation holes 7 and lattice ribs 8 surrounding the ventilation holes 7 is provided on the side of the air outlet 2 of the main body case 1. entire far-infrared radiation plate 6 is formed in a dome shape Rutotomo
The surface of each of the large number of lattice ribs 8
A hair dryer, wherein the hair dryer is formed on a convex curved surface 11 which is convex .