JP2006068187A - Hair dryer - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a hair dryer capable of preventing allergen and micro dust floating in air from being included in drying air, retaining the inside of a device body in a clean state, constantly blowingly feeding sanitary drying air, and being used by a user with allergic symptoms as well as a general user with a sense of security. <P>SOLUTION: A ventilation passage R in a body case 1 has a blowing fan 10, a fan driving motor 11, a heater 12 and the like disposed thererin. The ventilation passage R is provided with a suction port 6 in its one end and an outlet 7 in the other end. The suction port 6 is disposed with a filter 26 preventing the inflow of the allergen and the micro dust. A photocatalyst 29 is provided on the surface of the fan 10 facing the ventilation passage R and a light source 31 emitting an excitation light toward the photocatalyst 29 is provided in the inside of the body case 1. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a hair dryer which can feed hygienic clean dry air or prevent foreign matters floating in the air from being included in the dry air.

  In the present invention, a photocatalyst and a light source for exciting the photocatalyst are provided inside the hair dryer body in order to decompose organic matter or disinfect fungi. Is known (see Patent Documents 1 and 2). In Patent Document 1, an electric razor is applied, and a photocatalyst film is provided on the surface of a part facing the freckle chamber of the razor head, such as an outer blade and an inner blade, It prevents the sebum from being oxidized and spoiled, or allows germs to be sterilized.

  In Patent Literature 2, in a hand dryer for drying hands after washing with water, a photocatalyst layer is formed on each of a transparent case constituting the hand dryer and a blower fan inside the case. The hand dryer does not incorporate a light source that excites the photocatalyst, and uses an indoor lighting device in which the hand dryer is installed as an excitation light source.

  The hair dryer of the present invention is provided with a filter for removing foreign substances floating in the air on the side of the suction port. This type of hair dryer is known in Patent Documents 3 and 4. In the former, a front filter and a high-performance filter cover the outer surface of the suction port in an inner and outer double to prevent foreign matter from being sucked in. However, the structure and function of the high-performance filter are not mentioned. In the latter, the suction port is closed with a cylindrical filter. The filter is configured by holding a filter material sheet folded in a pleat shape in a ring shape, and one end of the tube is closed with a lid.

JP-A-11-216276 (paragraph number 0038, FIG. 1) JP 2001-361 (paragraph number 0020, FIG. 1) Japanese Utility Model Publication No. 64-11105 (page 3, FIG. 2) Japanese Utility Model Publication No. 5-9404 (paragraph number 0005, FIG. 1)

  In recent years, various allergic diseases are caused by allergens such as pollen, mite carcasses, fungi, germs, etc. in room air, and microdust such as dust, dust, pet animal hair, and textile waste floating in the air. Is a problem. According to the electric devices disclosed in Patent Documents 1 and 2, organic substances attached to components inside the device can be decomposed by a photocatalyst or germs can be sterilized, so that allergic diseases can be prevented from occurring.

  However, in general hair dryers, in order to increase the blowing efficiency of the fan, the suction port has a small resistance to ventilation, for example, is covered with a grill made of punching metal, and hardly has a dustproof function. For this reason, even if a photocatalyst is placed inside the dryer body, fiber scraps, hair, or microdust contained in the suction air adheres to and accumulates on the blades of the blower fan, the air guide inner wall, or the rectifying blades. It is easy to avoid that the surface of the photocatalyst is covered with the deposited layer or that the allergen is trapped and accumulated in the deposited layer.

  In this way, when allergens and microdust are deposited inside the ventilation path, the sterilization effect by the photocatalyst and the decomposition effect of organic matter are remarkably reduced, as well as dusty air in contact with the deposits and air with a rotting odor. Is unavoidably sent as dry air. In addition, when using a hair dryer for a long time, as a result, allergens and micro dust are repeatedly sprayed on the head, and in the worst case, it may contribute to the development of allergy. . To deal with this situation, it is effective to disassemble the dryer body and remove the deposits. However, it is difficult for the general user to assemble the dryer body that has been disassembled and cleaned, and it is difficult to disassemble and clean the hair dryer. It is impossible to rely on users.

  In this regard, according to the hair dryers of Patent Documents 3 and 4, the filter disposed at the suction port of the blower fan can prevent the inflow of dust contained in the suction air, thereby preventing the accumulation of dust and the like inside the ventilation path. Thus, clean dry air can be blown out. However, as allergens and microdust trapped by the filter increase in the amount of traps, they may come into contact with the sucked air and cause a strange odor. There is a risk of peeling off from the surface of the filter and scattering to contaminate the surrounding air. As the amount of trapped microdust increases, there is a disadvantage that the ventilation resistance of the filter increases and the air blowing efficiency rapidly decreases.

  An object of the present invention is to provide a hair dryer capable of blowing out hygienic and clean dry air by maintaining the inside of the dryer body in a clean state and further sterilizing foreign matters contained in the dry air. is there. In addition to being able to blow and supply sanitary and clean dry air, the object of the present invention is to prevent allergens and microdust floating in the air from being included in the dry air, not to mention general users and allergic diseases. The object is to provide a hair dryer that can be used with peace of mind by even users. An object of the present invention is to provide a hair dryer capable of supplying a cleaner dry air by decomposing or sterilizing allergen, microdust, and the like captured by a filter by a photocatalytic action.

  In the hair dryer according to the present invention, a ventilation fan 10, a fan driving motor 11, a heater 12, and the like are disposed in the ventilation path R in the main body case 1, and a suction port 6 is provided at one end of the ventilation path R. The blowout port 7 is provided at the other end of the ventilation path R. A photocatalyst 29 is provided on the surface of the dryer component facing the ventilation path R, and a light source 31 for irradiating excitation light toward the photocatalyst 29 is provided inside the main body case 1.

  A photocatalyst 29 is provided on at least a part of the surface of the fan 10, and the light source 31 is disposed on a stationary structure near the fan 10. The stationary structure includes a motor holder 13, its air guide cylinder 17, rectifying blade 18, main body case 1, heater holder 20, holder 44 provided at the suction port 6, filter frame 33, suction grill provided as necessary, etc. There is.

  A photocatalyst 29 is provided on at least the fan blade 10 b on the surface of the fan 10.

  Inside the main body case 1, a shield for shielding the excitation light emitted from the light source 31 from leaking out of the main body case 1 is provided.

  A filter 26 is disposed at the suction port 6 to prevent inflow of allergens and microdust.

  The filter 26 is composed of an electrostatic filter, and a photocatalyst 39 is provided on the surface.

  A second light source 47 that emits excitation light toward the photocatalyst 39 provided on the inner surface of the filter 26 is disposed inside the main body case 1.

  An axial flow type fan 10 is arranged in the middle of the ventilation path R between the suction port 6 and the blowout port 7. A light source 31 that irradiates excitation light forward toward the fan 10 is disposed in a stationary structure between the suction port 6 and the fan 10.

  A shield that shields the excitation light is provided between the fan 10 and the outlet 7. At least one of the motor 10, the heater 11, the structures 13 and 20 that support them, the blow grill 15, and the structures 14 and 17 that surround the ventilation path R, disposed between the fan 10 and the blowout port 7. One of them can also serve as a shield that blocks the excitation light.

  A photocatalyst 29 is provided on the surface of the fan blade 10 b of the fan 10. The light source 31 is disposed in the vicinity of the center of the cylinder of the main body case 1, and the center of the optical axis is directed toward the fan blade 10b.

  A light source 31 is arranged on the filter frame 33 of the filter 26 facing the fan 10.

  An axial flow type fan 10 is arranged in the middle of the ventilation path R between the suction port 6 and the blowout port 7. A light source 31 that irradiates excitation light backward toward the fan 10 is disposed in a stationary structure between the outlet 7 and the fan 10.

  A shield that shields excitation light is provided between the fan 10 and the suction port 6. A filter 26 provided at the suction port 6 also serves as a shield.

  An axial flow type fan 10 is arranged in the middle of the ventilation path R between the suction port 6 and the blowout port 7. A light source 31 that irradiates excitation light toward the fan 10 is disposed on a stationary structure facing the rotation peripheral surface of the fan 10.

  A mounting wall 30 is provided in the case between the main body case 1 and the grip 3 provided on one side of the lower surface thereof so as to face the rotating peripheral surface of the fan 10, and a light source 31 is mounted on the mounting wall 30.

  A multi-blade fan type fan 10 is arranged in the middle of the ventilation path R between the inlet 6 and the outlet 7. A photocatalyst 29 is provided on the surface of the fan blade 10 b of the fan 10. A light source 31 that irradiates excitation light toward the fan blade 10 b is disposed on a stationary structure surrounded by the fan blade 10 b of the fan 10. An excitation light shield is provided between the light source 31 and the suction port 6.

  A light source 31 that irradiates excitation light toward the fan 10 is disposed on the inner surface of the suction grill 56 that covers the suction port 6.

  In the hair dryer of the present invention, the photocatalyst 29 is provided on the surface of the dryer component facing the ventilation path R, and this is excited by the light from the light source 31 in the main body case 1 to decompose the organic matter by the oxidation-reduction reaction. Since germs are sterilized, the inside of the main body case 1 can be maintained in a clean state, and hygienic and clean dry air can be blown out. There is also an advantage that germs and the like contained in the dry wind can be directly sterilized by the ultraviolet rays emitted from the light source 31.

  When the photocatalyst 29 is provided on at least a part of the surface of the fan 10 and the light source 31 is arranged on the stationary structure near the fan 10, the ultraviolet ray is emitted from the light source 31 toward one place of the rotation trajectory of the photocatalyst 29 rotating along with the fan 10. The photocatalyst 29 can be excited with a smaller number of light sources 31, so that the structure of the hair dryer provided with the photocatalyst 29 and the light sources 31 can be simplified.

  If the photocatalyst 29 is provided on at least the fan blade 10b on the surface of the fan 10, it is only necessary to irradiate ultraviolet light from the light source 31 toward the rotation locus of the fan blade 10b, and the photocatalyst 29 can be excited with a smaller number of light sources 31. The structure of the hair dryer provided with the photocatalyst 29 and the light source 31 can be simplified. Since the photocatalyst 29 is provided on the surface of the fan blade 10b that has the highest chance of contact with air, the microdust or organic matter contained in the dry air is brought into contact with the photocatalyst 29, and these are effectively sterilized and decomposed. Hair can be dried with a clean dry air.

  When a shielding body is provided inside the main body case 1 and the excitation light emitted from the light source 31 is shielded by the shielding body, the excitation light of the photocatalyst 29 is reliably prevented from leaking out of the main body case 1 and the excitation light. Can be prevented from directly entering the eyes of the user, and safety when using a hair dryer can be improved.

  If the filter 26 for blocking the inflow of allergens and microdust is arranged at the suction port 6, in addition to being able to blow out and supply hygienic and clean dry air as described above, allergens and microdust floating in the air Therefore, it is possible to provide a hair dryer that can be used with peace of mind not only for general users but also for allergic users.

  When the photocatalyst 39 is provided on the surface of the filter 26 composed of an electrostatic filter, allergens and microdust suspended in the air can be adsorbed and fixed by the electrostatic action of the filter forming material, and organic matter can be obtained by the photocatalyst 39 provided on the filter surface. Can be decomposed and sterilized, so that the organic matter trapped on the filter surface is prevented from being spoiled or deteriorated, and a hair dryer capable of always supplying clean dry air can be obtained. Since the organic matter adhering to the filter surface can be decomposed and sterilized by the photocatalyst 39, it is possible to prevent the odor from being contained in the dry air passing through the filter 26.

  When the photocatalyst 39 is provided on the inner surface of the filter 26 so that excitation light can be irradiated from the second light source 47, in addition to the organic matter captured on the filter surface, the organic matter adhering to the inner surface of the filter 26 is also removed. Since it can be decomposed and sterilized by the photocatalyst 39, it is possible to more reliably prevent the odor from being contained in the dry air passing through the filter 26.

  An axial flow type fan 10 is arranged in the middle of the ventilation path R, a photocatalyst 29 is provided on the surface thereof, and a light source 31 that irradiates excitation light forward toward the fan 10 as shown in FIG. When arranged, most of the excitation light is shielded by the fan 10, and the excitation light that has passed through the fan 10 is shielded by the rectifying blade 18, the heater 12, the heater holder 20, the blowout grill 15, and the like. It is possible to avoid leakage as much as possible. Since the excitation light is irradiated along the blowing direction of the dry air, the excitation light cannot be directly viewed unless the dry air is blown out toward the eyes in the open state. Even if it leaks, the excitation light can be prevented from directly entering the eyes of the user.

  If a shield that blocks the excitation light is provided between the fan 10 and the outlet 7, it is possible to more reliably prevent part of the excitation light from leaking out of the outlet 7, and safety when using a hair dryer. Can be further improved.

  At least one of the motor 10, the heater 11, and the structures 13 and 20 that support them, the blow grill 15, and the structures 14 and 17 that surround the ventilation path R may also serve as a shield that blocks the excitation light. In this case, the excitation light shielding structure can be simplified, and the increase in the draft resistance of the dry air in the ventilation path R can be eliminated.

  When the photocatalyst 29 is provided on the surface of the fan blade 10b of the fan 10 and the optical axis center of the light source 31 disposed in the vicinity of the center of the cylinder of the main body case 1 is directed toward the fan blade 10b, one rotation locus of the fan blade 10b is obtained. It is only necessary to irradiate ultraviolet light from the light source 31 toward the place, and the photocatalyst 29 can be excited by a smaller number of light sources 31, so that the structure of the hair dryer provided with the photocatalyst 29 and the light source 31 can be simplified. Since the photocatalyst 29 is provided on the surface of the fan blade 10b that has the highest chance of contact with air, the microdust or organic matter contained in the dry air is brought into contact with the photocatalyst 29, and these are effectively sterilized and decomposed. Hair can be dried with a clean dry air. Since the light source 31 is disposed in the vicinity of the center of the cylinder of the main body case 1, it is possible to avoid the air flow sucked from the suction port 6 from being blocked by the light source 31 as much as possible, and the air blowing efficiency can be improved accordingly.

  If the light source 31 is disposed on the filter frame 33 of the filter 26 that faces the fan 10 due to a partial breakage of the filter element 34 or a defective mounting of the filter 26, it is not necessary to separately provide a structure for supporting the light source 31. In addition, the internal structure of the hair dryer can be simplified and the ventilation resistance can be reduced.

  An axial flow type fan 10 is disposed in the middle of the ventilation path R, a photocatalyst 29 is provided on the surface thereof, and a light source 31 that irradiates excitation light backward toward the fan 10 as shown in FIG. When arranged, the excitation light passing through the fan 10 can be shielded by the filter 26 or the holder 44 provided between the suction port 6 and the fan 10, so that the excitation light can be surely leaked out of the main body case 1. Eliminates the safety when using a hair dryer.

  Providing a shield that shields the excitation light between the fan 10 and the suction port 6 more reliably prevents a part of the excitation light from leaking from the blowout port 7, thereby improving safety when using a hair dryer. It can be further improved.

  When the filter 26 provided in the suction port 6 is used as a shield, the internal structure of the hair dryer can be simplified and an increase in ventilation resistance can be prevented as much as it is not necessary to separately provide a shielding structure.

  When the axial flow type fan 10 is disposed in the middle of the ventilation path R and the light source 31 that irradiates the excitation light toward the fan 10 is disposed on the stationary structure facing the rotation circumferential surface, the rotation circumferential surface of the photocatalyst 29 is provided. It is only necessary to irradiate ultraviolet light from the light source 31 and the photocatalyst 29 can be excited by a smaller number of light sources 31, so that the structure of the hair dryer including the photocatalyst 29 and the light source 31 can be simplified. Excitation light that has passed through the fan 10 can be shielded by the air guide cylinder 17 or the main body case 1 so that the excitation light can be reliably prevented from leaking out of the main body case 1 and the safety when using a hair dryer is improved. it can.

  In the case between the main body case 1 and the grip 3 provided on one side of the lower surface thereof, a mounting wall 30 facing the rotating peripheral surface of the fan 10 is provided, and when the light source 31 is attached to the mounting wall 30, the light source 31 or Since the support structure can be prevented from being exposed in the ventilation path R, the increase in ventilation resistance of the dry air in the ventilation path R can be eliminated, and the air blowing efficiency can be improved accordingly.

  As shown in FIG. 7, a multi-blade fan type fan 10 is arranged in the middle of the ventilation path R between the inlet port 6 and the outlet port 7 and a photocatalyst 29 is provided on the surface of the fan blade 10b. If the light source 31 that irradiates the excitation light toward the fan blade 10b is arranged, the excitation light that has passed through the fan 10 can be shielded by the main body case 1, so that the excitation light can be surely leaked out of the main body case 1. Eliminates and improves safety when using a hair dryer. Since the excitation light is irradiated toward the rotating fan blade 10b, there is an advantage that the front surface of the fan blade 10b can be irradiated with a smaller number of light sources 31.

  Providing a shield of excitation light between the light source 31 and the suction port 6 further reliably prevents part of the excitation light from leaking out of the suction port 6 and further improves safety when using a hair dryer. it can.

  When the light source 31 is arranged on the inner surface of the suction grill 56 covering the suction port 6 and the excitation light is irradiated toward the fan 10, it is sufficient to irradiate the ultraviolet light from the light source 31 toward the rotation locus of the fan 10. Since the photocatalyst 29 can be excited by several light sources 31, the structure of the hair dryer provided with the photocatalyst 29 and the light source 31 can be simplified. Since the light source 31 is disposed on the inner surface of the suction grill 56, it is possible to avoid the air flow sucked from the suction port 6 from being blocked by the light source 31 as much as possible, and the blowing efficiency can be improved accordingly.

(Example 1) FIG. 1 thru | or FIG. 3 shows the Example of the hair dryer which concerns on this invention. In FIG. 2, the hair dryer includes a horizontally long cylindrical main body case 1 with front and rear ends opened, and a grip 2 provided on the back side of the lower surface thereof. A switch knob 3 slidable up and down is provided on the front and rear surfaces of the grip 2, and the air volume and temperature of the drying air can be controlled by switching the switch knob 3. Specifically, when the switch knob 3 is slid from the OFF state to the first ON position, only the fan 10 rotates and strong cold air can be fed. When the slide operation is performed to the second on position, the heater 12 is energized and the low temperature air can be supplied. When the slide operation is performed to the third on position, it is possible to supply hot air having a larger air volume than the weak air. The light source 31 is turned off when the switch knob 3 is in the off state, and is lit at the first to third on positions. The grip 2 is connected to the main body case 1 via a shaft 4 and can be folded along the main body case 1 around the shaft 4 as indicated by an imaginary line in FIG.

  In FIG. 1, a main body case 1 includes a main case 1A that also serves as a wind conductor for dry air, and a rear case 1B that is attached to the rear end of the main case 1A. A suction port 6 is opened at the rear end of the rear case 1B. The blowout port 7 is opened at the front end of the main case 1A. A connecting frame 8 for the grip 2 is integrally formed on the lower surface of the rear end of the main case 1A and the lower surface of the rear case 1B. A nozzle 9 that squeezes the drying air into a flat shape is detachably attached to the outlet 7.

  Inside the ventilation path R surrounded by the main body case 1, an axial flow type fan 10, a motor 11 for driving the fan 10, and a heater 12 are arranged from the suction port 6 toward the blowout port 7. It is. Furthermore, a motor holder 13 and a steel plate protection cylinder 14 surrounding the heater 12 are fitted in the inner surface of the main case 1A. The protective cylinder 14 transmits the heat of the heater 12 evenly to the entire cylinder wall to prevent the heat from being concentrated locally, and further, a heat insulating effect is provided by an air layer formed in the gap between the main body case 1 and the protection cylinder 14. It is provided to obtain. The outlet 7 is covered with a press-molded outlet grill 15. The motor holder 13 includes a central tube 16 that is fitted on the output shaft side end of the motor 11, a cylindrical air guide tube 17 that surrounds the fan 10, and a rectifying blade 18 that connects both the members 16 and 17. It is prepared as one. A light projecting window 19 for a light source 31 described later is opened at the bottom of the cylindrical wall of the air guide cylinder 17.

  In order to fix and support the heater 12, a heater holder 20 is provided adjacent to the motor holder 13. The heater holder 20 includes a holder cylinder 21 that is continuously fitted to the motor 11 continuously from the boss 16, and four insulating frames 22 that are engaged and mounted on the peripheral surface of the holder cylinder 21 and the front edge of the rectifying blade 18. Thus, the heater 12 is spirally wound around the protruding edge of the insulating frame 22.

  In the above hair dryer, in order to prevent allergens and microdust floating in the air from being included in the dry air, a filter 26 is disposed in the suction port 6 and its outer surface is covered with a filter cover 27. Furthermore, a photocatalyst 29 is provided on the surface of the fan 10 on which microdust such as fiber scraps easily accumulates, and a light source 31 for exciting the photocatalyst 29 is disposed on the mounting wall 30 facing the rotation peripheral surface of the fan 10. .

  The filter 26 is composed of a plastic-molded bowl-shaped filter frame 33 and a cup-shaped filter element 34 that is tightly fixed to the outer surface of the filter frame 33. The filter 26 is detachably attached to the rear case 1B via a bayonet structure, whereby the filter 26 can be easily cleaned and replaced. The cost required for replacing the filter 26 can be reduced. As the bayonet structure, a bayonet groove 35 is formed in the rear part of the inner surface of the rear case 1B, and a protrusion 36 that engages with the bayonet groove 35 is provided around the front opening of the filter frame 33.

  The filter element 34 is formed of an electrostatic filter formed using fibers charged with static electricity as a main material, and a photocatalyst 39 is provided on the surface side thereof. Specifically, a suspension obtained by mixing fine powder of titanium dioxide in an organic solvent was applied to the surface of the filter element 34 and then dried and solidified to form a photocatalyst 39 in a mesh pattern as shown in FIG. The photocatalyst 39 is excited using light from an indoor illuminator such as a fluorescent lamp. For this purpose, the filter cover 27 is formed of a transparent plastic material so that illumination light can reach the surface of the filter element 34 via the filter cover 27. The filter cover 27 is formed in a cap shape, and is detachably press-fitted to the outer surface of the rear end of the rear case 1B. Thereafter, an opening 40 for taking in air is formed in the wall.

  The photocatalyst 29 described above is formed in a thin film so as to cover the entire surface of the fan 10, that is, the entire surfaces of the fan boss 10a and the fan blade 10b. Specifically, a silver fine powder is supported on titanium dioxide, the fine powder is mixed in a molten resin to form a processing stock solution, a fan 10 is immersed in the processing stock solution, and the molten resin is solidified to form a photocatalyst. 29 is formed into a thin film.

  The light source 31 is composed of a directional ultraviolet light emitting LED, is attached and fixed to the mounting wall 30 and irradiates the fan boss 10a and the fan blade 10b with ultraviolet light through the light projection window 19 to enter the irradiation range. The provided photocatalyst 29 is excited. The photocatalyst 29 that has received ultraviolet light decomposes organic substances by an oxidation-reduction reaction generated on the surface thereof, and sterilizes miscellaneous fungi. In addition, it is possible to directly sterilize micro organic substances, germs and the like floating in the dry air with ultraviolet rays. When the photocatalyst 29 is excited, radical OH groups are generated from the surface and sprayed onto the scalp, so that the scalp can be sterilized with radical OH groups. The silver supported on the titanium dioxide sterilizes organic substances adhering to the surface of the fan 10 when not in use. As shown in FIG. 3, the mounting wall 30 is integrally formed on the inner surface of the connecting frame 8 provided on the lower surface of the rear case 1B. In this embodiment, the connecting frame 8 of the rear case 1B is a stationary structure referred to in the claims.

  As described above, when the light source 31 is provided so as to face the rotating peripheral surface of the fan 10 and the ultraviolet light is irradiated toward the rotating fan 10, the front and rear surfaces of the fan blade 10b as well as the peripheral surface of the fan boss 10a are applied. Since it can expose to ultraviolet light simultaneously, the arrangement | positioning number of the light sources 31 can be reduced compared with the case where the photocatalyst 29 is provided in another position, or the light source 31 is provided in another position. If there are a plurality of light sources 31 arranged, the sterilization and deodorizing effects can be improved. Since most of the ultraviolet light emitted from the light source 31 is blocked by the fan 10 or by the wind guide cylinder 17 surrounding the fan 10, the ultraviolet light does not leak from the main body case 1 and will be described later. This is advantageous in that it is not necessary to provide a separate shield. When the ultraviolet light that has passed through the fan 10 is shielded by the air guide tube 17 or the main body case 1, a photocatalyst 29 is provided on the inner surface of the air guide tube 17 or the main body case 1. 17 and the organic substance adhering to the inner surface of the main body case 1 can be sterilized, and the drying air can be further cleaned.

  Since the photocatalyst 29 is excited by irradiating the front and rear surfaces of the fan blade 10b where the contact with the air is most frequent and fiber waste and the like easily accumulate, the photocatalyst 29 is excited. Even when the microdust adheres to and accumulates on the fan blade 10b due to the above, it is possible to effectively sterilize and decompose the deposited organic matter. Further, since the air flow generated by the fan 10 comes into contact with the photocatalyst 29, it is possible to sterilize and decompose micro organic substances and germs contained in the air flow. Can dry hair.

(Example 2) FIG. 4 shows Example 2 in which the arrangement position of the light source 31 is changed. There, a holder 44 is mounted between the air guide cylinder 17 and the rear case 1B, and two light sources 31 are arranged on the boss 45 in the center of the holder 44 so that the ultraviolet light is mainly directed toward the fan blade 10b. Can be irradiated. The inclination of the center of the optical axis of each light source 31 is made different so that the entire blade surface facing the light source 31 of the fan blade 10b can be irradiated, and the photocatalyst 29 can be provided on the inner surface of the air guide tube 17. For example, the photocatalyst 29 can be excited by the irradiation light from each light source 31 to decompose and sterilize microdust and the like adhering to the air guide tube 17.

  Thus, when irradiating ultraviolet light forward, a part of the light may leak out from the outlet 7 via the ventilation path R, but a shield is provided between the fan 10 and the outlet 7. By providing, leakage of ultraviolet light can be prevented. In the case of this embodiment, the motor 10, the heater 11, the motor holder 13, the heater holder 20, and the blowout grill 15 shield and change the ultraviolet light, and these members function as a shield. There is no need to provide a separate body. In this embodiment, the holder 44 is a stationary structure referred to in the claims. Since the light source 31 is arranged in the central portion of the inner surface of the holder 44 facing the fan boss 10a of the fan 10, that is, in the vicinity of the center of the cylinder axis of the main body case 1, the flow of the sucked air is obstructed by the light source 31. It can be surely prevented.

  As described above, when the light source 31 is disposed in the vicinity of the center of the cylinder of the main body case 1 and is directed toward the rotating fan blade 10b, the fan blade 10b crosses the irradiation region of the light source 312. Thus, the photocatalyst 29 provided on the fan blade 10b can be evenly exposed to ultraviolet light, so that the number of light sources 31 arranged can be reduced compared to the case where the light sources 31 are provided at other positions. Since others are the same as the previous embodiment, the same reference numerals are assigned to the same members, and descriptions thereof are omitted. The same applies to the following embodiments.

Example 3 FIG. 5 shows Example 3 in which the arrangement position of the light source 31 is changed. In this case, two light sources 31 are arranged above and below the inner surface of the front end of the air guide tube 17 so that the ultraviolet light can be irradiated rearward mainly toward the fan blade 10b. The mounting wall 30 is formed integrally with the air guide tube 17. As in Example 2, the inclination of the optical axis center of each light source 31 was made different so that the blade surface on the side facing the light source 31 could be irradiated.

  In this embodiment, compared with the rear blade surface of the fan blade 10b, the front blade surface where there are many opportunities for contact with air is irradiated with ultraviolet light, so that the amount of air contacting the excited photocatalyst 29 is large. Therefore, organic matter and various germs can be effectively sterilized and decomposed accordingly. Although some ultraviolet light may leak to the rear side of the fan 10, the ultraviolet light that has passed through the fan 10 is shielded by the filter 26 that covers the opening surface of the suction port 6. It doesn't leak out of 1. In this embodiment, the air guide cylinder 17 of the motor holder 13 is a stationary structure referred to in the claims.

(Example 4) In addition to the hair dryer of Example 1, FIG. 6 irradiates and excites the photocatalyst 39 provided in the filter 26 with the 2nd light source 47 incorporated in the main body case 1 of the filter element 34. The micro dust attached to the inner surface can be decomposed and sterilized. For this purpose, the photocatalyst 29 was provided on the surface of the filter frame 33, and the photocatalyst 39 similar to that of Example 1 was provided in a mesh pattern on both the inside and outside of the filter element 34. The light source 47 was supported by the boss 45 of the holder 44 described in the second embodiment.

  The light source 47 is composed of an ultraviolet light emitting LED similar to that of the first embodiment, and the ultraviolet light emitted from the LED is scattered by the scattering block 48 so that almost the entire inner surface of the filter 26 can be irradiated with the ultraviolet light. The scattering block 48 is made of an acrylic resin molded product, and includes four to eight partial spherical scattering surfaces 50 around a reflection portion 49 provided at the center. A reflection layer 51 that reflects light is formed on the outer surface of the reflection portion 49 and on a flat surface facing the scattering surface 50.

  As described above, when the photocatalysts 39 are provided on both the inner and outer surfaces of the filter element 34, the photocatalyst 39 on the outer surface side can be excited by a fluorescent lamp, and the photocatalyst 39 on the inner surface side can be excited by the dedicated light source 47, the inner and outer surfaces of the filter 26 are obtained. Since the microdust adhering to the surface can be decomposed and sterilized by the photocatalyst 39, it is possible to eliminate the supply of dry air with a strange odor.

(Embodiment 5) FIGS. 7 and 8 show another embodiment in which the present invention is applied to a hair dryer provided with a fan 10 of a multiblade fan type. There, the fan 10 was housed in a fan chamber 54 partitioned inside the main body case 1, the suction port 6 was opened on the upper wall of the fan chamber 54, and the blowout port 7 was opened on the side end of the main body case 1. The filter 26 that covers the suction port 6 includes a filter frame 33 and a mat-like filter element 34, and an outer surface thereof is covered with a transparent filter cover 27. The filter element 34 is formed of the same material as the filter element described in the first embodiment, and a photocatalyst 39 is provided on the outer surface side thereof. Photocatalysts 29 are provided on both front and back surfaces of the fan blade 10b.

  A motor 11 and a motor holder 13 are arranged inside the fan surrounded by the fan blade 10b of the fan 10. The motor holder 13 is made a stationary structure, and ultraviolet light is irradiated from the light source 31 arranged at three places on the outer surface toward the fan blade 10b. The light sources 31 are arranged at equal intervals in the circumferential direction of the motor holder 13, but by shifting the vertical position of each light source 31 in order, as shown by the broken lines in FIG. Can be irradiated with ultraviolet light. The filter 26 in this embodiment also serves as an ultraviolet light shield.

  The shielding body that shields the excitation light includes a motor 10, a heater 11, a structure (motor holder) 13 that supports the motor 10, and a blow grill (not shown) disposed between the fan 10 and the blow outlet 7. ) And at least one of the surrounding walls 59 surrounding the ventilation path R can be used. In this embodiment, as shown in FIG. 7, the peripheral wall 59 surrounding the fan 10 and the ventilation path R prevents the ultraviolet light from leaking from the blowout port 7 to the outside. Thereby, it can prevent that ultraviolet light leaks outside in all the openings. The filter cover 27 has a group of ventilation openings. As described above, when the light source 31 is arranged inside the fan surrounded by the fan blade 10b, an advantage that the space inside the fan can be effectively used compared to the case where the light source 31 is arranged outside the rotation peripheral surface of the fan 10, for example. There is.

Example 6 FIG. 9 shows still another example of the present invention. There, two light sources 31 that irradiate excitation light toward the fan blade 10 b of the fan 10 are arranged on the inner surface of the suction grill 56 that covers the suction port 6. The suction grill 56 in this embodiment can have a grill structure having a small opening that can prevent a hand from touching the components in the main body case 1 such as the fan 10 and, if necessary, allergen or microdust. A grill structure that also serves as a filter can be obtained.

  The light source 31 is mounted on a holder 57 fixed to the center of the inner surface of the suction grill 56 and faces the light source 31 with the inclination of the optical axis center of each light source 31 different from that of the light source 31 described in FIG. The blade surface could be irradiated all over. Since the light source 31 is disposed in the central portion of the inner surface of the grill 56 facing the fan boss 10a of the fan 10, that is, in the vicinity of the center of the cylinder of the main body case 1, it is ensured that the flow of the intake air is prevented by the light source 31. Can be prevented.

  In the above embodiment, the case where the photocatalyst 29 is provided in the fan 10 has been described. However, it is not necessary, and the protective cylinder 14, the blowout grill 15, the wind guide cylinder 17, the rectifying blade 18, the insulating frame 22, the suction grill, or the like. The photocatalyst 29 can be provided on the surface of the dryer component facing the ventilation path R. As the light source 31, an ultraviolet light emitting LED is suitable at present but is not limited. For example, a small fluorescent black tube light bent in a ring shape can be used as the light source 31. The light source 31 is provided on the grip side, and the ultraviolet light radiated from the light source 31 can be guided to a required place by an optical fiber.

  The light source 31 can be disposed on the filter frame (stationary structure) 33 of the filter 26 facing the fan 10. In the hair dryer of the first to fourth embodiments, the structure of the filter 26 can be changed to a structure using the filter element 34 similar to that of the fifth embodiment.

It is a vertical side view of a hair dryer. It is a side view of a hair dryer. It is the sectional view on the AA line in FIG. It is a vertical side view of the principal part of Example 2 which changed the arrangement structure of the light source. It is the vertical side view of the principal part of Example 3 which changed the arrangement structure of the light source further. It is a vertical side view of the principal part which concerns on Example 4. FIG. It is a cross-sectional top view of the principal part of the hair dryer which concerns on Example 5. FIG. It is the BB sectional view taken on the line in FIG. It is a vertical side view of the principal part which concerns on Example 6. FIG.

Explanation of symbols

1 Body Case 6 Suction Port 7 Blowout Port 10 Fan 11 Motor 12 Heater 26 Filter 29 Photocatalyst 31 Light Source R Ventilation Path

Claims (20)

A fan (10) for blowing air, a motor (11) for driving the fan, and a heater (12) are arranged in the ventilation path (R) in the main body case (1), and sucks into one end of the ventilation path (R). A hair dryer provided with a mouth (6) and provided with an outlet (7) at the other end of the ventilation path (R),
A hair in which a photocatalyst (29) is provided on the surface of a dryer component facing the ventilation path (R), and a light source (31) that irradiates excitation light toward the photocatalyst (29) is provided in the body case (1). Hairdryer.   The hair dryer according to claim 1, wherein a photocatalyst (29) is provided on at least a part of a surface of the fan (10), and a light source (31) is arranged on a stationary structure near the fan (10).   The hair dryer according to claim 2, wherein a photocatalyst (29) is provided on at least the fan blade (10b) on the surface of the fan (10).   The shielding body which shields that the excitation light irradiated from a light source (31) leaks out of a main body case (1) is provided in the inside of a main body case (1). Hair dryer.   The hair dryer according to claim 1, 2 or 3 or 4, wherein a filter (26) for blocking inflow of allergens and microdust is arranged in the suction port (6).   The hair dryer according to claim 4 or 5, wherein the filter (26) comprises an electrostatic filter, and a photocatalyst (39) is provided on the surface thereof.   The hair dryer according to claim 6, wherein a second light source (47) for irradiating excitation light toward the photocatalyst (39) provided on the inner surface of the filter (26) is disposed inside the main body case (1). An axial fan (10) is disposed in the middle of the ventilation path (R) between the suction port (6) and the blowout port (7).
A light source (31) for irradiating excitation light forward toward the fan (10) is disposed in a stationary structure between the suction port (6) and the fan (10). 5. A hair dryer according to 5.   The hair dryer according to claim 8, wherein a shield for shielding excitation light is provided between the fan (10) and the outlet (7).   A motor (10), a heater (12), a structure (13, 20) that supports these, a blow grill (15), and a ventilation passage disposed between the fan (10) and the blow outlet (7). The hair dryer according to claim 9, wherein at least one of the structures (14, 17) surrounding the path R also serves as a shield for shielding excitation light. A photocatalyst (29) is provided on the surface of the fan blade (10b) of the fan (10),
The hair dryer according to claim 8, 9 or 10, wherein the light source (31) is arranged in the vicinity of the center of the cylinder of the main body case (1), and the center of the optical axis is directed toward the fan blade (10b).   The hair dryer according to claim 8, 9 or 10 or 11, wherein a light source (31) is arranged on a filter frame (33) of a filter (26) facing the fan (10). An axial fan (10) is disposed in the middle of the ventilation path (R) between the suction port (6) and the blowout port (7).
The light source (31) for irradiating the excitation light backward toward the fan (10) is disposed in the stationary structure between the outlet (7) and the fan (10). 5. A hair dryer according to 5.   The hair dryer according to claim 13, wherein a shield for shielding excitation light is provided between the fan (10) and the suction port (6).   The hair dryer according to claim 14, wherein the filter (26) provided in the suction port (6) also serves as a shield. An axial fan (10) is disposed in the middle of the ventilation path (R) between the suction port (6) and the blowout port (7).
The hair dryer according to claim 2, 3 or 4 or 5, wherein a light source (31) for irradiating excitation light toward the fan (10) is arranged on a stationary structure facing the rotating peripheral surface of the fan (10).   A mounting wall (30) facing the rotating peripheral surface of the fan (10) is provided in the case between the main body case (1) and the grip (3) provided on one side of the lower surface thereof. The hair dryer according to claim 16, wherein a light source (31) is mounted on the hair dryer. A multi-blade fan type fan (10) is disposed in the middle of the ventilation path (R) between the suction port (6) and the blowout port (7).
A photocatalyst (29) is provided on the surface of the fan blade (10b) of the fan (10),
6. The light source (31) for irradiating excitation light toward the fan blade (10b) is disposed on a stationary structure surrounded by the fan blade (10b) of the fan (10). Hair dryer.   The hair dryer according to claim 18, wherein a shield for excitation light is provided between the light source (31) and the suction port (6).   The hair dryer according to claim 2, 3 or 4, wherein a light source (31) for irradiating excitation light toward the fan (10) is arranged on the inner surface of the suction grill (56) covering the suction port (6).

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