JPH0584Y2 - - Google Patents

Description

[Detailed explanation of the idea] 〔Technical field〕 This invention relates to a hair dryer.

[Background technology]

Recently, there has been a demand for a hair dryer equipped with a small and highly efficient heater, and in response to this demand, a hair dryer having a petal-shaped heater as shown in FIG. 6 has been developed. As shown in the figure, this heater 1 is constructed by winding a predetermined number of heating wires 3 around the outer circumferential surface of a cylindrical body (cylindrical substrate) 2, which are bent into petal shapes with the cylindrical body as a core. The cylindrical body 2 is made of a heat-resistant insulator, and both ends are supported by support fittings 4. The support fitting 4 includes a curved portion 4a, and leg portions 4b protruding from both ends thereof, which are erected on a wiring board 5 provided within the hair dryer. Both ends of the cylindrical body 2 are inserted into the curved portion 4a. Although not shown, the hair dryer equipped with this heater 1 has a cylindrical body 2 of the heater.
A blowing means is provided behind the blowing means in the axial direction, and the air sent by the blowing means is turned into warm air by the heater 1.

The heater is small and highly efficient because the heating wire is provided in a concave and convex shape and the heater efficiently heats the air sent from the blowing means.

However, the hair dryer had the following problems. In other words, among the air blown by the air blowing means, the air (airflow) passing through the outside of the cylindrical body is heated by the heating wire and becomes high-temperature air (indicated by 6 in Fig. 6); The wind passing through the cylindrical body is not heated much because the heat generated from the heating wire is blocked by the cylindrical body, and the wind passes through the cylindrical body.
(indicated by 7 in the figure). The low-temperature air passes through the cylindrical body without any obstruction, and the mixing of both high and low temperature air is not promoted, so the temperature distribution of the air that has passed through the heater is shown by the broken line 8 in Figure 7. The problem is that the center is low and the periphery is high, making it uneven. In the figure, A indicates the center of the cylindrical body, and a indicates the wind tunnel diameter of the hair dryer.

[Purpose of invention]

This idea was made in view of these circumstances, and it is possible to create a hair dryer that has a small heater and high efficiency, has less variation in hot air, and is easier to obtain hot air with the desired temperature distribution. is intended to provide.

[Disclosure of invention]

The inventors have been researching to achieve the above-mentioned object by improving the hair dryer equipped with the heater. They have come up with a method to make the air temperature distribution uniform by increasing the distance from the heater to the hot air outlet of the hair dryer so that the low temperature air in the center and the high temperature air around it are mixed evenly, and by replacing the heater's cylindrical body with a cylinder so that the air does not pass through the center of the heater. However, the former method has a problem that the total length of the hair dryer becomes long, and the latter method has a problem that the air passage becomes narrow, reducing the air blowing efficiency. Therefore, the inventors have been researching further and found that it is possible to reduce the amount of air passing through the cylindrical body by providing an obstacle to the heater that blocks the air from passing through the cylindrical body, and have completed this invention.

Therefore, this invention consists of a heater in which heating wires bent like petals are wound around the outer peripheral surface of the cylindrical body with a cylindrical body as the core, and an air blower that blows air from one of the axial directions of the cylindrical body. The hair dryer is provided with a means for converting the air sent by the air blowing means into warm air by the heater, wherein the cylindrical body has a support having a curved portion and leg portions protruding from both ends of the cylindrical body. The support fitting is inserted into and supported by the curved part of the metal fitting, and the support metal fitting includes a group of protrusions that are integrated with the curved part and bent into the cylindrical body, so that wind passes through the cylindrical body. The gist of the hair dryer is a hair dryer characterized by being provided with an obstructing body that obstructs.

This invention will be explained in detail below based on drawings showing embodiments.

1 to 4 show one embodiment of the hair dryer according to this invention. As shown in the figure, this hair dryer includes a cylindrical body 11. A rear end frame portion 13 having an outside air intake port 12 is formed in the body 11, and the tip of a power cord 14 is connected to the center of the rear end frame portion 13. Moreover, behind the rear end frame part 13,
A filter 15 is attached. body 11
At the inner rear part, a blowing means consisting of a motor 16, a rectifying blade 17 provided on the motor 16, and a fan 18 is provided. Fan 18 is filter 1
The outside air sucked in from the outside air intake port 12 through the air intake port 12 is sent to the straightening blade 17 through the straightening blade 17, and the air is straightened through the straightening blade 17, and the air is sent from the air outlet 19 at the tip of the body 11 to a removable attachment (not shown). be. A first wiring board 20 is installed at the bottom inside the body 11 . This first wiring board 20
is electrically connected to the power cord 14,
At its front end, an upward step 21 is provided which is slightly higher than the rear part. First wiring board 20
is a plate (not shown) consisting of a number of conductive pieces.
is sandwiched between upper and lower mounting plates (not shown), and an insulating plate (not shown) is affixed to its upper surface. A temperature sensor (air temperature sensor) used for controlling the wind temperature is installed in the upward step portion 21.
22 are installed. A thermoswitch 23 is arranged behind the temperature sensor 22 of the first wiring board 20 and is used for the purpose of preventing the heater 24 from overheating. A heater 24 is arranged behind the thermoswitch 23 on the first wiring board 20. This heater 24 is connected to the first wiring board 2
A pair of front and rear support fittings 25, 25' erected at 0;
It includes a cylindrical body (cylindrical substrate) 26 and a heating wire 27 made of an insulating material. Support metal fittings 25, 25'
Leg portions 25b protrude from both ends of a curved portion (arc portion, ring portion) 25a in a V-shape. The curved portion 25a of the support fitting 25 is provided with an obstruction (bending) 10 formed by bending a group of protrusions integrally formed with the curved portion 25a inward. In the cylindrical body 26, the curved parts 25a of the support fittings 25, 25' are inserted into the openings at both ends, and the air blowing means is located at the rear of the cylindrical body 26 in the axial direction, so that the axial direction is along the air blowing direction. It is supported on the first wiring board 20 by both supports 25 and 25'. The heating wire 27 is in the form of a band, and a predetermined number of heating wires are wound around the outer circumferential surface of the cylindrical body 26 in a petal-like manner, such as by winding the heating wire bent into a waveform so that the waveform protrudes from the outer circumferential surface. It is wrapped. Both ends of the heating wire 27 and the support fittings 25,
The leg piece 25b of 25' is electrically connected, and the leg piece 25b is electrically connected to the first wiring board. A voltage dividing resistor 28 is arranged behind the heater 24 on the first wiring board. This voltage dividing resistor 28 is provided to divide the voltage applied to the motor 16, and has first and second voltage dividing resistance wires 30, 31 wound around a pair of left and right insulating substrates 29, 29. The insulating substrates 29, 29 are arranged parallel to the air blowing direction. An air temperature control section 32 is provided behind the voltage dividing resistor 28 on the first wiring board 20 so as to be in front of the motor 16. The air temperature control unit 32 includes a pair of left and right sub-wiring boards 33 and 34, and both sub-wiring boards 3
3 and 34 are arranged parallel to the air blowing direction. Control components and the like are arranged on the outer surfaces of the sub-wiring boards 33 and 34. A second wiring board 35 is provided at a position on the back side of the first wiring board 20 so as to be parallel to the second wiring board 35 . The second wiring board has three temperature control lamps (light emitting diodes) 36, 37, 3 in order from the front side.
8. A wind temperature control switch 39 and a wind speed control switch (partial voltage resistance switching switch) 40 are arranged in series. Like the first wiring board 20, the second wiring board 35 is also embedded with a wiring plate made up of a large number of conductive pieces. This wiring plate and the first wiring board 2
The wiring plate No. 0 is connected to the wiring plate 0 through a conductive connecting portion 41 that is integrated with both plates. On the back side of the first wiring board 20, there is a slide member 43 that slides by the ON/OFF switching main switch 42.
is provided.

In this hair dryer, when the ON/OFF switching main switch 42 is turned ON, the motor 16 rotates and the heating wire 27 of the heater 24 generates heat, and the wind sent to the heater 24 by the fan 18 is transmitted through the heating wire 27. It is heated and becomes warm air,
The air is discharged from the air outlet 19. The heater 24 is small and highly efficient because the heating wire 27 is provided in a concave and convex shape, which efficiently heats the air sent from the blowing means. In addition, in the heater 24, among the air blown by the fan 18, the air passing outside the cylindrical body 26 is heated by the heating wire 27, and the high temperature air 6 is heated by the heating wire 27.
On the other hand, the wind passing through the cylindrical body 26 is
Since the heat generated from the heating wire 27 is blocked by the cylindrical body 26, it is not heated much and becomes low-temperature air 7. However, since the wind passing through the cylindrical body 26 is blocked by the obstruction body 10, the volume of the low-temperature air 7 is limited and reduced. In addition, the flow velocity of the low-temperature air 7 is also reduced by the obstruction body 10, so that the high-temperature air 6 and the low-temperature air 7 are reliably mixed in front of the cylindrical body 26, as shown by the solid line 44 in FIG. As if there were
This makes it possible to obtain warm air with a uniform temperature distribution.

FIG. 5 shows the front part of the heater of another embodiment of the hair dryer according to this invention. As shown in the figure, the leg portion 25b of the support fitting 25 of the heater 46 is provided with a bending portion 47 formed by bending a protruding piece integral with the leg portion 25b inward. The rest of the structure is the same as the previous example, and
Numbers common to those in FIGS. 1 to 4 indicate the same thing. This embodiment also provides the same effects as the previous embodiment. Further, in this embodiment, the direction in which the air flows outside the cylindrical body 26 is changed by bending the cylindrical body 26 using the bending and raising 47. By changing the direction in which the air flows in this manner, sufficient hot air can be supplied to temperature-sensitive components such as the temperature sensor 22 and thermoswitch 23.
Further, by changing the angle (the amount of bending) of the bending 47, the effect of being able to obtain hot air with a desired temperature distribution can be obtained.

[Effect of idea]

The hair dryer according to this invention includes a heater comprising a cylindrical body as a core and a petal-shaped heating wire wound around the outer circumferential surface of the cylindrical body, and an air blower that blows air from one of the axial directions of the cylindrical body. The hair dryer is provided with a means for converting the air sent by the air blowing means into warm air by the heater, wherein the cylindrical body has a support having a curved portion and leg portions protruding from both ends of the cylindrical body. The support fitting is inserted into and supported by the curved part of the metal fitting, and the support metal fitting includes a group of protrusions that are integrated with the curved part and bent into the cylindrical body, so that wind passes through the cylindrical body. By changing the bending angle of the obstruction and changing the flow direction of the air passing through the cylindrical body, hot air with a desired temperature distribution can be obtained. In addition, by changing the amount of protrusion of the obstruction and increasing or decreasing the cross-sectional area of the wind passage at the part where the obstruction is installed, the amount of air passing through the cylindrical body can be adjusted, and the number of protrusions that act as obstruction can be adjusted. By changing the number, installation position, or size, it is also possible to change the flow direction of the air that has passed through the cylindrical body. As a result, the heater is small and highly efficient, and there is little variation in hot air, making it possible to obtain hot air with a desired temperature distribution.

[Brief explanation of drawings]

Figure 1 shows one of the hair dryers according to this invention.
2 is a perspective view of the heater installation part of the embodiment, FIG. 3 is an enlarged perspective view of the front of the heater of the embodiment, and FIG. 4 is a front view of the heater of the embodiment. 5 is an enlarged perspective view of the front part of the heater of another embodiment of the hair dryer according to this invention; FIG. 6 is an enlarged perspective view of the front part of the heater of a conventional hair dryer; and FIG. It is a graph showing the temperature distribution of hot air of a dryer. 10... Disturber, 16... Motor, 17... Rectifier blade, 18... Fan, 24, 46... Heater,
26...Cylindrical body, 27...Heating wire.

Claims (1)

[Claims for Utility Model Registration] (1) A heater comprising a cylindrical body as a core and a petal-shaped heating wire wound around the outer circumferential surface of the cylindrical body; The hair dryer is provided with an air blowing means for blowing air, and the air sent by the air blowing means is turned into warm air by the heater, wherein the cylindrical body has both ends thereof a curved part and legs protruding from both ends thereof. The support fitting is inserted into and supported by the curved part of the support fitting, and the support fitting includes a group of protrusions that are integrated with the bending part and bent into the cylindrical body,
A hair dryer characterized by being provided with an obstruction that prevents wind from passing through the cylindrical body. (2) The hair dryer according to Claim 1 of the Utility Model Registration Claim, wherein the legs of the support fittings are provided with bends formed by bending inward protruding pieces that are integral with the legs.