JPH0824606B2 - 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 is proposed in, for example, Japanese Utility Model Laid-Open No. 62-109004. As shown in FIGS. 14 (a) and 14 (b), the far infrared ray emitting substance is adhered to the surface of the outlet grill 20 of the main body case 1, and the far infrared rays are irradiated to the hair by warm air. It is designed so that it can be dried quickly and that blood circulation in the scalp can be promoted.

[0003]

However, in the case where the far-infrared emitting substance is adhered to the outlet grill 20 as described above, there is a problem when the irradiation amount is increased in order to enhance the effect of far-infrared radiation. Occurs. That is, the outlet grille 20 is provided to protect the user from danger and to prevent damage to the built-in parts.
It is necessary to increase the total area of the outlet grill 20 in order to increase the far-infrared irradiation amount by attaching the far-infrared radiation substance to 0 by dipping or spraying. For that purpose, it is necessary to set the width H dimension of the lattice rib 21 of the outlet grill 20 large. However, if the grid rib width H is increased in this way, the opening size of each ventilation hole 22 surrounded by the grid ribs 21 becomes small and the ventilation resistance becomes large, so that sufficient blowing is not performed and the heat inside the main body case 1 is not generated. There is a problem that a muffled phenomenon occurs. However, if the lattice rib width H of the outlet grill 20 is reduced in order to reduce the ventilation resistance, the far infrared ray irradiation amount tends to be insufficient. As described above, it is desirable to reduce the grid rib width H from the perspective of ventilation resistance, and it is necessary to widen the grid rib width H from the perspective of far-infrared irradiation amount, which is a trade-off relationship. Further, if the width H of the lattice rib 21 is formed wide and the surface 21a of the rib 21 facing the outside of the air outlet is formed flat, the flat surface 21a is formed as shown in FIG. 14 (b). At that time, a turbulent flow of warm air is generated to reduce the irradiation efficiency, and wind noise may be generated. These problems are
As described above, the far-infrared emitting material is not limited to the one that also serves as a grill that adheres far-infrared emitting materials to the outlet grille 20, and the far-infrared emitting material is a porous far-infrared ray similar to the shape of the outlet grille separately from the outlet grille. The same applies to the case where the radiation plate is formed and arranged side by side on the outlet grill.

The present invention has been made to solve the above problems, and in the above far-infrared irradiation type hair dryer, it is possible to reduce the ventilation resistance at the air outlet and to increase the far-infrared irradiation amount. The purpose is to be able to achieve.

[0005]

To achieve the above object, according to the solution to ## in the hair dryer of the present invention, enclose the plurality of vent holes 7 and the respective vent holes 7 as shown in FIG. 1, and less of the surface
A far-infrared radiation plate 6 having a grid rib 8 on which a far-infrared radiation material is arranged on a surface facing at least to the outside of the air outlet.
Each of the surfaces of each of the large number of lattice ribs 8 is formed into a convex curved surface 11 that is convex toward the outside of the air outlet.

[0006]

By forming at least the surface of the lattice rib 8 of the far-infrared radiation plate 6 facing the outside of the air outlet into the convex curved surface 11, the width H of the lattice rib 8 is not widened, that is, the opening of each ventilation hole 7 is formed. The far infrared irradiation area can be increased and the irradiation amount can be increased without reducing the size. Also,
On the surface of the convex curved surface 11, the flow of wind is smooth and turbulence is not generated.

[0007]

1 to 4, reference numeral 1 is a main body case of a hair dryer, 2 is an air outlet provided at a front end of the main body case 3, 3 is a suction port provided at a rear end of the main body case 1, and 4 is a main body case. A heater 5 accommodated inside 1 is a blower fan disposed behind the heater 4 inside the main body case 1. A far-infrared radiation plate 6 which also serves as an outlet grill is arranged at the outlet 2 of the main body case 1. The far-infrared radiation plate 6 is formed as a disk body having a large number of ventilation holes 7 and lattice ribs 8 surrounding each ventilation hole 7, and a far-infrared radiation substance film 10 is applied to the surface of the base material 9. ing.

Specifically, the far infrared radiation plate 6 is manufactured as follows. First, a metal plate is pressed to obtain a base material 9 having a large number of holes as shown in FIG. This base material 9 is degreased. Then
The above-mentioned base material 9 is added to the solution or dispersion of the far-infrared radiation substance.
Is first dipped and air dried. After secondary dipping and natural drying, forced drying is performed at a predetermined temperature. In this way, the far-infrared radiation substance film 10 is formed on the surface of the base material 9, and the surface of the film 10 on the side facing the outside of the air outlet is a convex curved surface 11 that is convex toward the outside of the air outlet. And the surface area is enlarged. Therefore, the warm air from the heater 4 smoothly flows along the convex curved surface 11, and a large amount of far infrared rays are radiated toward the outside of the air outlet 2 by an amount corresponding to the expansion of the surface area by the convex curved surface 11. Side face 12.1 of the lattice rib 8 facing the ventilation hole 7
2 and the back surface 13 facing the inner side of the air outlet have a low contribution to improve the irradiation efficiency, 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 to allow ventilation. The opening size of the hole 7 is ensured to be as large as possible and economical application is possible.

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

The base material 9 may be a metal such as iron or aluminum, or a synthetic resin (particularly, a synthetic resin such as polycarbonate having excellent heat resistance), but a material having a large specific heat such as iron is preferable. This is because when the base material 9 is made of a material having a large specific heat, the far-infrared radiation substance film 10 is uniformly heated from the inside of the cross section to the outside, and the irradiation efficiency can be further enhanced. On the other hand, when the base material 9 is made of resin, the far infrared radiation material film 10
Is heated only by the hot air flowing on this surface, and as shown in FIG. 1, the temperature at the center point A on the leeward side tends to be low, resulting in poor irradiation efficiency. 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.

The far-infrared radiation plate 6 is formed in a circular arc shape having a convex shape toward the outside of the air outlet even in the whole cross-sectional shape, and the film thickness T of the far-infrared radiation material film 10 at the center of the plate surface.
The thickness t of the peripheral mounting portion 14 is formed thinner than that. In such a case, 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 as shown in FIG. When the film thickness t is large, it is difficult to bend and it is difficult to securely fit and fix. Further, when the thickness t of the peripheral edge mounting portion 14 is large, the far-infrared irradiation of the portion in contact with the inner wall of the main body case 1 is performed on the main body case 1, and the temperature of the relevant portion of the main body case 1 is increased more than necessary. Although there is a problem in that it is easily raised to cause thermal deformation, such a problem can be solved by reducing the film thickness t of the peripheral edge mounting portion 14.

In the cross-sectional shape of the lattice rib 8 itself of the far-infrared radiation plate 6, if an edge 15 is provided toward the inner side of the blowout port, the edge 15 will be a solution of the far-infrared radiation substance when coating by dipping or the like. Alternatively, it is advantageous because it can exert the action of draining the dispersion liquid. The edge 15 is easily obtained by pressing the base material 9 with a metal plate. When the base material 9 is made of a metal plate, the metal plate may be plated with neutralized or unneutralized plating or nickel plating.

(Other Embodiment) FIG. 5 shows the far-infrared radiation plate 6 described above.
2 shows a modified example of the cross-sectional shape of the lattice rib 8 of FIG. 1, in which the base material 9 itself is formed in an arc-shaped cross-section, and the far-infrared radiation substance film 10 is applied to this surface.

6 and 7 both show another embodiment of the cross-sectional shape of the grating rib 8 of the far infrared radiation plate 6. In FIG. 6, the surface of the base material 9 is formed into a rough surface 18, and the far-infrared emitting material film 10 is applied thereto. Figure 7
Indicates the surface of the base material 9 with the particle size (10
.About.50 .mu.), And the far-infrared radiation substance film 10 is applied to the surface thereof.
According to these, the effect of preventing the far-infrared radiation substance film 10 from peeling off 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 radiation plate 6, in which the far-infrared rays are formed by forming the base material 9 of foam metal or foam plastic into a porous shape. The radioactive substance film 10 permeates the surface and firmly adheres to the surface.

9 and 10 each show another modification of the cross-sectional shape of the grating rib 8 of the far infrared radiation plate 6. The lattice rib 8 of the embodiment shown in FIG. 9 is formed in an elliptical cross section, and the surface of the far-infrared radiation substance film 10 applied to the base material 9 having a quadrangular cross section is not only the surface facing the outside of the outlet but also the inside of the outlet. The convex curved surface 11 is also formed so as to face the direction. Further, the grid rib 8 of the embodiment shown in FIG. 10 is formed in a circular cross section, and is formed by applying a far-infrared radiation substance film 10 to a base material 9 having a circular cross section in a substantially uniform thickness all around. By thus forming the convex rib 11 on the surface of the lattice rib 8 facing inward of the air outlet, not only the noise due to the turbulent flow of warm air can be prevented but also the contact time between the warm air and the lattice rib 8, that is, The thermal conductivity becomes high, and the irradiation amount of far infrared rays can be further increased.

11 to 13 each show a further embodiment of the far infrared radiation plate 6. In this example,
The far-infrared radiation plate 6 has a quadrangular peripheral mounting portion 14, and a narrow buffer portion 17 is provided at a portion of the peripheral mounting portion 14 that is connected to the lattice rib 8. In these cases,
The deformation distortion generated when the peripheral mounting portion 14 of the far-infrared radiation plate 6 is mounted on the inner wall of the main body case 1 may be absorbed by the buffer portion 17 and affect the plate surface central portion of the far-infrared radiation plate 6. Therefore, the far infrared ray emitting material film 10 can be prevented from peeling from the base material 9 due to the deformation strain. However, this can be said to be exactly the same when the peripheral edge mounting portion 14 is not limited to a quadrangular shape and is formed in a circular shape or an elliptical shape. The buffer section 1
In addition to narrowing the connecting portion of the peripheral edge mounting portion 14 with the grid ribs 8, the peripheral mounting portion 14 may be made thin, or a small hole may be provided as shown in FIG.

The far-infrared radiation plate 6 of the present invention is
In addition to the one that doubles as the outlet grille as in the above embodiment,
The far-infrared radiation plate may be independently formed as a separate body from the air outlet grill and used in parallel with the air outlet grill. Further, the far-infrared radiation plate 6 is arranged inside the blow-out nozzle N when the blow-out nozzle N as shown in FIG. It may be installed. Furthermore, the far-infrared radiation plate 6 may be formed by eliminating the base material 9 and molding only the far-infrared radiation material.

[0019]

According to the far-infrared radiation type hair dryer of the present invention, at least the surface of the lattice rib 8 of the far-infrared radiation plate 6 disposed on the air outlet 2 side is a convex curved surface 11 facing at least to the outside of the air outlet. It was formed in. Therefore, the surface area of the grating rib 8 can be increased, and the far infrared ray irradiation amount can be increased. Moreover, the opening size of the ventilation hole 7 is limited to the extent that the ventilation resistance does not increase, and the ventilation resistance can be reduced, sufficient blowing can be ensured, and the occurrence of the heat retention phenomenon in the main body case 1 can be prevented. . In addition, by forming at least the surface of the lattice rib 8 facing the outside of the outlet in the streamlined shape of the convex curved surface 11, the wind flow is smooth and turbulent flow does not occur, and the noise of wind noise is generated. Can be kept low.

[Brief description of drawings]

FIG. 1 is a cross-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 hair dryer with a blowout port portion cut away.

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

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

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

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

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

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

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

FIG. 11 is a front view of a far-infrared radiation plate showing another embodiment.

12 is a sectional view taken along line XX in FIG.

FIG. 13 is a front view of a part of a far-infrared radiation plate showing still another embodiment.

FIG. 14 shows a conventional hair dryer, and FIG.
4 (a) is a front view, and FIG. 14 (b) is a partial cross-sectional view of the outlet grill.

[Explanation of symbols]

 1 Main Body Case 2 Air Outlet 6 Far Infrared Radiation Plate 7 Ventilation Hole 8 Lattice Rib 9 Base Material 10 Far Infrared Radiation Material Film 11 Convex Curved Surface

Claims (1)

[Claims] To 1. A outlet 2 side of the body case 1, enclose the plurality of vent holes 7 and the respective ventilation holes 7, and at least the surface
Far infrared radiation plate 6 in the form having a grid rib 8 which arranged far-infrared emitting material on the surface facing the outlet extraoral direction and is arranged, a large number of lattice ribs 8 wherein the individual of the far-infrared radiation plate 6 A hair dryer, wherein a surface is formed on a convex curved surface 11 that is convex toward the outside of the air outlet.