JP2552610B2 - 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. 62-143406. As shown in FIGS. 14 (a) and 14 (b), this is a far-infrared ray radiating ceramic which constitutes a lattice-shaped outlet grill 20 and the outlet grill 20 is used as the hot air outlet 2 of the main body case 1. By arranging it, the hair can be dried quickly by irradiating the hair with far infrared rays by warm air, and the blood circulation of the scalp can be promoted. Further, for example, as disclosed in Japanese Utility Model Laid-Open No. 62-109004, a far-infrared radiation plate is arranged at the hot air outlet for the same purpose, but this far-infrared radiation plate has a grid-shaped base material. It is formed by dipping and coating a solution of a far-infrared emitting substance on this base material.

[0003]

However, as in the former example of the former case, the ceramics for emitting far-infrared radiation, the above-mentioned blow-out grill 20 composed of only this ceramic is very expensive in view of the raw material used. In addition, it is very vulnerable to drop impacts and easily damaged, so it is necessary to pay close attention when handling it when assembling it. Further, when it is formed into a lattice shape and sintered, a part thereof is easily lost or easily deformed, resulting in poor yield. On the other hand, according to the latter conventional example in which a grid-shaped base material is formed and the far-infrared radiation substance is dip-coated on this base material, it is possible to prevent a drop impact or the like by selecting the material of the base material. Is also advantageous because a strong one can be obtained. However, in this latter case, if the far-infrared radiation plate is thin or has a soft base material, the far-infrared radiation plate is attached to the warm air outlet of the dryer body when it blows warm air. It is easily deformed when a compressive load is applied from the edge of the outlet. If the base material tends to thermally expand like aluminum or iron, it will be deformed due to the difference in thermal expansion between the high temperature central part due to the temperature rise during use and the low temperature peripheral part where heat is easily radiated to the body case side. Cheap. In this way, the far-infrared radiation material peels off due to the deformation of the far-infrared radiation plate,
There is a problem of falling off.

An object of the present invention is to provide a hair dryer having a far-infrared radiation plate in which a far-infrared radiation material is coated on the surface of a grid-like base material as described above, and the far-infrared radiation material is formed by deformation of the far-infrared radiation plate. This is to prevent the peeling and dropping off of.

[0005]

In the hair dryer of the present invention, as shown in the illustrated example, a buffer portion 17 for strain absorption relaxation is provided at the connecting portion between the peripheral edge mounting portion 14 of the far infrared radiation plate 6 and the lattice rib 8. Is provided. The buffer portion 17 can be configured by forming a connecting portion between the peripheral edge mounting portion 14 and the lattice rib 8 to have a narrow width or a thin wall, or providing a hole at the connecting portion.

[0006]

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, when the far infrared radiation plate 6 receives a compressive load from the inner wall of the main body case 1 and is distorted,
Alternatively, when strain occurs due to thermal expansion of the lattice rib 8 after use after mounting, the strain is absorbed and relaxed by the buffer portion 17. As a result, the far-infrared radiation material does not peel off or fall off the lattice rib 8.

[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 by integrally forming a grid rib 8 inside a circular peripheral mounting portion 14 when viewed from the front, and has a large number of ventilation holes 7 surrounded by the grid rib 8. A far-infrared emitting substance film 10 is formed by coating a far-infrared emitting substance on the surface of the material 9.

Specifically, the far infrared radiation plate 6 is manufactured as follows. First, a metal plate is pressed to obtain a base material 9 having an entire dome shape, which is composed of a circular peripheral edge mounting portion 14 as shown in FIGS. 1 and 4 and a lattice rib 8 integrally formed with the peripheral mounting portion 14. . The base material 9 is provided with a small hole at a connecting portion between the peripheral edge mounting portion 14 and the lattice rib 8 to form a buffer portion 17 for strain absorption relaxation. As the buffer portion 17, instead of a small hole, the connecting portion between the peripheral edge mounting portion 14 and the lattice rib 8 is formed to be narrower than the width of the lattice rib 8 as shown in FIG. It is optional to form thin. Next, the base material 9 is degreased, then first dipped in a solution or dispersion of a far-infrared radiation substance and naturally dried.
After further secondary dipping, natural drying, and forced drying at a predetermined temperature, the far infrared radiation plate 6 having the far infrared radiation material film 10 formed on the surface of the base material 9 is obtained.

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. 2, 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. In addition,
When the base material 9 is composed of a metal plate, the metal plate may be plated with neutralized or unneutralized plating or nickel plating.

The dome-shaped far-infrared radiation plate 6 thus obtained
Is attached by fitting the peripheral edge mounting portion 14 thereof into the groove 16 of the inner wall of the air outlet 2 of the main body case 1 as shown in FIG. At this time, even if the far-infrared radiation plate 6 receives a compressive load from the inner wall of the groove 16 of the main body case 1 and is distorted, the strain is absorbed and relaxed by the buffer portion 17, so that the far-infrared radiation on the surface of the lattice rib 8 is radiated. The material film 10 was no longer peeled off or dropped from the lattice rib 8.

As described above, the far-infrared radiation material film 10 formed on the surface of the base material 9 is formed on the surface of the grid rib 8 on the convex curved surface 11 which is convex toward the outside of the air outlet, and the surface area is increased. Take the expansion of. Therefore, the warm air from the heater 4 smoothly flows along the convex curved surface 11 and
Far infrared rays irradiate a large amount toward the outside of the air outlet 2 due to the increase in the surface area due to. The side surfaces 12 and 12 of the lattice ribs 8 facing the ventilation holes 7 and the back surface 13 of the lattice ribs 8 facing inward of the air outlets are places where contribution to improving the irradiation efficiency is low. It is formed thinner than the film thickness on the curved surface 11, so that the opening size of the ventilation hole 7 is as large as possible and economical application is possible.

The far-infrared radiation plate 6 is formed in a dome shape having a convex arc 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.

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

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 both 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 rim mounting portion 14 formed in a quadrangular shape, and a narrow buffer cushioning portion 17 is provided at a portion of the rim mounting portion 14 that is connected to the lattice rib 8.
The narrow-width type buffer portion 17 easily thermally expands like the iron-based base material 9, and the base material 9 has a large plate thickness.
This is more effective when the peripheral mounting portion 14 has high mechanical strength. As the buffer portion 17, in addition to making the connecting portion of the peripheral edge mounting portion 14 with the lattice rib 8 narrow, it 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.

[0020]

According to the present invention, the buffer portion 17 for alleviating strain absorption is provided at the connecting portion between the peripheral edge mounting portion 14 of the far infrared radiation plate 6 and the lattice rib 8. Therefore, when the far-infrared radiation plate 6 is attached to the air outlet 2 side of the main body case 1, it is possible to absorb and relax the compressive load that the radiation plate 6 receives from the main body case 1 and the distortion due to the thermal expansion during use after the attachment. It is possible to well prevent the radioactive material from peeling off from the base material 9.

[Brief description of drawings]

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

FIG. 2 is a cross-sectional 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 holes 8 Lattice rib 9 Base material 10 Far-infrared radiation substance film 17 Buffer part

 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP-A-2-218305 (JP, A) JP-A-1113078 (JP, A) Actually open 62-143408 (JP, U) Actually open 62- 23605 (JP, U) Actually open 62-69907 (JP, U) Actually open 1-59505 (JP, U) Actually open 1-160905 (JP, U) Actually open 1-112859 (JP, U) Actually open 62-143406 (JP, U) Actually open 62-109004 (JP, U)

Claims (4)

(57) [Claims] 1. A far-infrared radiation plate 6 is disposed on the air outlet 2 side of a main body case 1, and the far-infrared radiation plate 6 is provided with a peripheral edge attachment portion 14 attached to the air outlet 2 side. Lattice rib 8 formed integrally
In a hair dryer in which the far-infrared radiation material is applied to at least the surface of the lattice rib 8 of the base material 9 consisting of, distortion occurs at the connecting portion between the peripheral edge mounting portion 14 of the far-infrared radiation plate 6 and the lattice rib 8. A hair dryer, which is provided with a buffer portion 17 for absorbing absorption. 2. The hair dryer according to claim 1, wherein the cushioning portion 17 is provided with a hole at a connecting portion between the peripheral edge attaching portion 14 and the lattice rib 8. 3. The hair dryer according to claim 1, wherein the cushioning portion 17 is formed with a narrow width at a connecting portion between the peripheral edge attaching portion 14 and the lattice rib 8. 4. The hair dryer according to claim 1, wherein the cushioning portion 17 is formed by thinning a connecting portion between the peripheral edge attaching portion 14 and the lattice rib 8.