WO2020026510A1 - 光照射装置及び光照射装置の製造方法 - Google Patents

光照射装置及び光照射装置の製造方法 Download PDF

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Publication number
WO2020026510A1
WO2020026510A1 PCT/JP2019/011233 JP2019011233W WO2020026510A1 WO 2020026510 A1 WO2020026510 A1 WO 2020026510A1 JP 2019011233 W JP2019011233 W JP 2019011233W WO 2020026510 A1 WO2020026510 A1 WO 2020026510A1
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WIPO (PCT)
Prior art keywords
light emitting
light
irradiation device
emitting elements
light irradiation
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Application number
PCT/JP2019/011233
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English (en)
French (fr)
Japanese (ja)
Inventor
忠 椎橋
Original Assignee
メトラス株式会社
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Publication date
Application filed by メトラス株式会社 filed Critical メトラス株式会社
Priority to CN201980005194.5A priority Critical patent/CN111246913B/zh
Priority to KR1020207011826A priority patent/KR102465910B1/ko
Publication of WO2020026510A1 publication Critical patent/WO2020026510A1/ja

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N5/00—Radiation therapy
    • A61N5/06—Radiation therapy using light
    • A61N5/0613—Apparatus adapted for a specific treatment
    • A61N5/0616—Skin treatment other than tanning
    • A61N5/0617—Hair treatment
    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
    • A45D20/00—Hair drying devices; Accessories therefor
    • A45D20/04—Hot-air producers
    • A45D20/08—Hot-air producers heated electrically
    • A45D20/10—Hand-held drying devices, e.g. air douches
    • A45D20/12—Details thereof or accessories therefor, e.g. nozzles, stands
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F7/00—Heating or cooling appliances for medical or therapeutic treatment of the human body
    • A61F7/0085—Devices for generating hot or cold treatment fluids
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N5/00—Radiation therapy
    • A61N5/06—Radiation therapy using light
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S2/00—Systems of lighting devices, not provided for in main groups F21S4/00 - F21S10/00 or F21S19/00, e.g. of modular construction
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V19/00—Fastening of light sources or lamp holders
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V19/00—Fastening of light sources or lamp holders
    • F21V19/001—Fastening of light sources or lamp holders the light sources being semiconductors devices, e.g. LEDs
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F7/00—Heating or cooling appliances for medical or therapeutic treatment of the human body
    • A61F2007/0001—Body part
    • A61F2007/0002—Head or parts thereof
    • A61F2007/0008—Scalp
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N5/00—Radiation therapy
    • A61N5/06—Radiation therapy using light
    • A61N2005/0635—Radiation therapy using light characterised by the body area to be irradiated
    • A61N2005/0643—Applicators, probes irradiating specific body areas in close proximity
    • A61N2005/0644—Handheld applicators
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N5/00—Radiation therapy
    • A61N5/06—Radiation therapy using light
    • A61N2005/0658—Radiation therapy using light characterised by the wavelength of light used
    • A61N2005/0662—Visible light

Definitions

  • the present invention relates to a light irradiation device for irradiating a light-irradiated portion of a human body with light and a method of manufacturing the light irradiation device.
  • Non-Patent Documents 1 to 3 Non-Patent Documents 1 to 3). reference). It is thought that hair papilla cells are stimulated and activated by irradiation with red light, and secretion of cell growth factors such as HGF and VEGF-A is promoted, thereby promoting hair growth.
  • the present invention has been made in view of such a problem, and an object of the present invention is to provide a technology for improving the effect of a light irradiation device that irradiates a light to an irradiated portion of a human body.
  • a light irradiation device includes a substrate on which a plurality of light-emitting elements are arranged, and a direction perpendicular to an arrangement surface of the substrate is referred to as a vertical direction, and a plurality of light-emitting elements are arranged.
  • the called side is referred to as an upper, comprising a lower case provided below the substrate, each of the plurality of light emitting elements are arranged so that the optical axis is inclined from the vertical direction, the lower case, It has a receiving portion for supporting each of the plurality of light emitting elements arranged on the substrate from obliquely below.
  • Another embodiment of the present invention is a method for manufacturing a light irradiation device.
  • This method is a method of manufacturing a light irradiation device, in which a direction perpendicular to an arrangement surface of a substrate on which a plurality of light emitting elements are arranged is referred to as a vertical direction, and a side on which a plurality of light emitting elements are arranged is referred to as an upper side.
  • a step of mounting the substrate on a lower case having a receiving portion for receiving a plurality of light emitting elements disposed on the substrate from obliquely below, and receiving the plurality of light emitting elements disposed on the substrate And inclining the plurality of light emitting elements by pressing the light emitting elements.
  • This light irradiation device includes a substrate on which a plurality of light emitting elements are arranged, and the plurality of light emitting elements are arranged such that a stopper portion of an electrode terminal is located inside a through hole of the substrate.
  • the present invention it is possible to improve the effect of the light irradiation device that irradiates the irradiated portion of the human body with light.
  • FIG. 2 is an exploded perspective view of the light irradiation device according to the embodiment. It is a front view of the light irradiation apparatus concerning embodiment.
  • FIG. 3 is a side sectional view of the light irradiation device according to the embodiment. It is a front view of the cover member of the light irradiation apparatus which concerns on embodiment. It is a side view of the cover member of FIG.
  • FIG. 5 is a rear view of the cover member of FIG. 4. It is an expanded sectional view of a circumference of a cover member and a light emitting element.
  • FIG. 4 is a front view of a hood member of the light irradiation device according to the embodiment. It is a side view of the hood member of FIG.
  • FIG. 11 is a side view of the plurality of light emitting elements of FIG. 10.
  • FIG. 4 is an enlarged sectional view of the tubular portion and the fitting tubular portion of FIG. 3.
  • It is a block wiring diagram of the light irradiation apparatus which concerns on embodiment. It is a figure showing the temperature characteristic of an LED lamp. It is a figure which shows the result of a hair growth experiment of a mouse. It is a figure which shows the result of a human hair growth experiment.
  • FIG. 3 is a top perspective view of the light emitting unit of the present embodiment as viewed obliquely from above.
  • FIGS. 20A, 20B, and 20C are a top perspective view, a rear perspective view, and a plan view, respectively, of the upper case of the light emitting unit of this embodiment.
  • FIGS. 21A, 21B, and 21C are a top view, a front view, and a rear view, respectively, of the wiring board of the light emitting unit of this example.
  • FIGS. 22A, 22B, and 22C are a top perspective view, a front view, and a rear perspective view, respectively, of the lower case of the light emitting unit of the present embodiment.
  • FIGS. 23A and 23B are top perspective views of the wiring board of the light emitting unit of this embodiment and the lower case on which the wiring board is mounted.
  • FIGS. 24A and 24B are dimensional diagrams of the light emitting section of the present embodiment.
  • FIGS. 25A and 25B are dimensional diagrams of the wiring board of the present embodiment.
  • FIG. 3 is a schematic sectional view of a light emitting element arranged on a wiring board. It is a figure which shows typically the structural member of another Example of a light emission part.
  • FIGS. 29A, 29B, 29C are a top perspective view, a front view, and a rear perspective view, respectively, of the lower case of the light emitting unit of this embodiment.
  • an appropriate temperature air is irradiated to the irradiated area.
  • a light irradiation device for blowing air to the air will be described.
  • the present inventors have developed a light irradiation device for irradiating red light having a wavelength of around 638 nm, which has been proved by articles such as Non-Patent Documents 1 to 3 to have an effect of promoting hair growth and hair growth.
  • a questionnaire survey was conducted to determine when the user of the light irradiation device wanted to use it.
  • the subjects of the questionnaire are a total of 21 men, 15 men and 6 women who want thin hair care or hair care, and the average age is 47.5 years.
  • the results of the questionnaire were as follows.
  • the number of people who are concerned about the decrease in hair volume due to thinning hair is increasing in both men and women from around 40s, and even in the 60s, 95% of women and 78.8% of men About 87% of people who are concerned about hair thinning in the future want hair care or hair care.
  • the present inventors prototyped a light irradiation device in which a high-energy-density red LED unit was incorporated into a hair dryer, and performed hair growth experiments on mice and humans. The details of the hair growth experiment will be described in Examples below.
  • hair growth and hair growth effects can be obtained only by irradiating red light, but irradiating red light by irradiating red light while blowing warm air heated to about body temperature It was found that a higher hair growth and hair growth effect can be obtained than in the case of only performing the hair growth.
  • clear hair growth and hair growth effects were observed in all subjects by irradiating red light while blowing warm air heated to about the body temperature.
  • stretching stimulation by scalp massage suppresses hair loss factors such as IL-6 and TNT- ⁇ and is effective in normalizing the hair cycle and regenerating hair (for example, "Standardized Scalp Massage Results” Increased Hair, Thickness, By Inducing, Stretching, Forces, Dermal, Papilla, Cells, In, The Subcutaneous, Tissue ", Taro, Koyama, Kazuhiro, Kobayashi, Takanori, Hama, Kasumi, Murakami, Rei, Ogawa, An Open Access, Journal, January 25, 2016. It is thought that the same stimulus as massage is given to the scalp even by moderate ventilation, and the effect of suppressing the hair loss factor is exerted.
  • hair loss factors such as IL-6 and TNT- ⁇
  • the light irradiation device for thin hair care or hair care also has a function of blowing appropriately heated warm air.
  • blowing warm air heated to about body temperature to the scalp may be able to enhance the inhibitory effect of hair loss factors by a relaxation effect, and increase cell growth factors. Since there is a possibility that the hair can be activated, the hair growth and the hair growth may be further promoted by the synergistic effect.
  • the light irradiating device that irradiates red light from the LED is equipped with a function of blowing hot air
  • the light irradiation device of the present embodiment has a wavelength and irradiation energy that can promote hair growth or hair growth at the irradiated site in an environment where the light irradiation device is used.
  • the LED of the light irradiation device a circuit for supplying power to the LED, a blower for sending out hot air, and a device for adjusting the temperature of the hot air so that the light is emitted from the light emitting portion to the irradiated portion.
  • Each component such as a temperature adjustment unit and a control unit that controls them is configured.
  • the wavelength is a wavelength in a predetermined range including 638 nm, for example, a wavelength of 634 to 639 nm.
  • the temperature of the air sent out by the blower is a temperature near the body temperature at which the user feels comfortable and is expected to increase the skin permeability of the stratum corneum, and is, for example, 35 to 45 ° C.
  • the light irradiation device is configured such that light irradiated to the irradiated portion has a predetermined range of wavelength and irradiation energy including 638 nm capable of promoting hair growth or hair growth at the irradiated portion.
  • irradiation energy including 638 nm capable of promoting hair growth or hair growth at the irradiated portion.
  • the following three aspects of the light irradiation device are proposed.
  • An LED having a temperature characteristic such that light having a wavelength in a predetermined range including 638 nm is output in a temperature range of air sent from a blowing unit of a light irradiation device is used.
  • a circuit capable of compensating the temperature characteristics of the LED such that light having a wavelength in a predetermined range including 638 nm is output from the LED is mounted.
  • the blower and the LED are mounted in a positional relationship such that the LED is not heated or hardly heated by air sent from the blower of the light irradiation device.
  • Aspect 3 Detecting the wavelength or irradiation energy of light applied to the irradiated portion or its vicinity, and dynamically controlling the wavelength or irradiation energy of light output from the LED based on the detected wavelength or irradiation energy. I do.
  • FIG. 1 is an exploded perspective view of the light irradiation device 100 according to the embodiment
  • FIG. 2 is a front view of the light irradiation device 100
  • FIG. 3 schematically shows a side cross section of the light irradiation device 100.
  • the direction X corresponds to a horizontal left-right direction
  • the direction Y corresponds to a horizontal front-back direction
  • the direction Z corresponds to a vertical up-down direction.
  • the directions Y and Z are each orthogonal to the direction X.
  • the direction X may be described as a left or right direction
  • the direction Y may be described as a forward or rearward direction
  • the direction Z may be described as an upward direction or a downward direction. This is referred to as a radial direction described later. Regardless of the notation of these directions, the light irradiation device 100 can be used in any posture.
  • the light irradiation device 100 In the description of the light irradiation device 100 according to the embodiment, an example will be described in which a light irradiation device having a hair dryer shape on the scalp or hair is used as an example of the skin or body hair that is the irradiated portion.
  • the light irradiation device 100 can also be used for body hair at a site other than the head hair such as eyebrows and beards and skin near the base.
  • the light irradiation device 100 illuminates a scalp or hair, which is an example of the irradiation target 70, with a blowing unit 40 for sending an airflow 42 flowing in a first direction P. And a light-emitting unit 10 that outputs the light flux 28 of the air-fuel ratio.
  • the light-emitting unit 10 is provided on the side of the blower unit 40 in the first direction P.
  • the temperature of the irradiated portion 70 may increase. It is also conceivable that the light irradiation device 100 itself generates heat during use, thereby increasing the temperature of the irradiated portion 70. Therefore, in the light irradiation device 100, the blower 40 is configured to send the airflow 42 toward the irradiated part 70. The irradiation of the irradiated portion 70 with the airflow 42 can reduce the temperature rise.
  • the irradiated part 70 receives the unheated cool wind, the tension of the user is relaxed and the blood flow is improved, so that the synergistic effect of receiving the light flux 28 and the air flow 42 on the scalp is also achieved. Can be expected.
  • FIGS. 4 is a front view of the cover member 18, FIG. 5 is a side view thereof, and FIG. 6 is a rear view thereof.
  • the plurality of light emitting elements 20 are in direct contact with the scalp or the hair, which are examples of the irradiated portion 70, foreign substances such as sebum may adhere to the plurality of light emitting elements 20, and the surfaces of the plurality of light emitting elements 20 may become fogged.
  • the surfaces of the plurality of light emitting elements 20 become cloudy, the amount of output light may decrease. For this reason, it is desirable that the plurality of light emitting elements 20 do not directly contact the irradiated portion 70.
  • the light-emitting unit 10 is provided with a replaceable cover member 18 through which the light flux 28 passes.
  • the cover member 18 may be manually replaceably attached without using a tool.
  • the cover member 18 may be provided with an engagement portion that can be easily attached and detached.
  • the cover member 18 has a plurality of protrusions 19 that protrude in the first direction side and come into contact with the irradiation target 70.
  • the protrusion 19 is divided between the hairs, and the tip of the protrusion 19 approaches the scalp, so that the light flux 28 reaches the scalp efficiently.
  • the tip of the protruding portion 19 may be in contact with the scalp. When the tip of the protruding portion 19 hits the scalp, it is possible to apply an appropriate stimulus to the scalp and promote blood flow.
  • the light emitting section has a small dimension in the front-back direction. Therefore, in the light irradiation device 100, as shown in FIG. 7, the cover member 18 is provided with a concave portion 19b for accommodating at least a part of the plurality of light emitting elements 20. By accommodating, for example, the tip of the light emitting element 20 in the recess 19b, the size of the light emitting unit 10 in the front-rear direction can be reduced.
  • the recess 19 b may be provided corresponding to the protrusion 19.
  • the cover member 18 is formed of a material that attenuates ultraviolet light. In this case, since the amount of ultraviolet light included in the light beam 28 transmitted through the cover member 18 is small, the user can use the light beam with confidence.
  • the cover member 18 includes a retreat area 18a that retreats toward the blower unit 40 in the front-rear direction that is the first direction P, and a first direction P from the retreat area 18a. And an advancing region 18b that is advancing forward at P.
  • the retreat area 18a and the advance area 18b of the cover member 18 can be arranged corresponding to the curved shape C of the irradiated portion 70.
  • FIG. 8 is a front view of the hood member 15, and FIG. 9 is a side view thereof.
  • the hood member 15 that surrounds the light flux 28 on the first direction P side is provided in the light emitting unit 10.
  • the provision of the hood member 15 can reduce the amount of light leaking outward. By providing the hood member 15 so as to be in contact with the irradiated portion 70, the amount of light leaking to the outside can be further reduced.
  • the hood member 15 may be provided so as to protrude forward from the protrusion 19 of the cover member 18.
  • the hood member 15 is provided with a retreat area 15a corresponding to the retreat area 18a of the cover member 18 and a forward area 15b corresponding to the forward area 18b.
  • the forward area 15b is advanced forward in the first direction P from the backward area 15a.
  • FIG. 10 is a front view of the plurality of light emitting elements 20 attached to the wiring board 13, and FIG. 11 is a side view thereof.
  • the light emitting section 10 includes a plurality of light emitting elements 20, as shown in FIG.
  • the plurality of light emitting elements 20 for example, an LED (light emitting diode) or an LD (diode laser) can be used.
  • the plurality of light emitting elements 20 are arranged so as to surround the airflow 42.
  • the plurality of light emitting elements 20 are arranged side by side in the first direction P of the blower 40 at a position surrounding the airflow 42, for example, in a ring shape, avoiding the center of the airflow 42.
  • the plurality of light emitting elements 20 may be arranged in a circular shape, an oval shape, or a polygonal shape surrounding the air flow 42.
  • the irradiated portion is often curved because the head is substantially spherical. For this reason, it is desirable that the position of each light emitting element is set in accordance with the curved shape of the irradiated portion. Therefore, in the light irradiation device 100, as shown in FIG. 11, the plurality of light-emitting elements 20 include a light-emitting element 20a that retreats to the blower side in the first direction P in the front-back direction that is the first direction P; A light emitting element 20b that is advanced in the first direction from the light emitting element 20a that is retracted.
  • each of the plurality of light emitting elements 20 is arranged so as to change the position in the front-back direction so as to follow the curved shape C of the head.
  • the light emitting elements 21 near the center thereof are arranged in the front-back direction which is the first direction P from the light emitting elements 22 on both sides (upper and lower sides) thereof. It is set back to the rear. The difference in the distance from the head surface of each of the plurality of light emitting elements 20 is reduced, and the light beam 28 can be effectively irradiated.
  • the amount of light received in the irradiated portion has a small deviation at each portion in the irradiated portion. Therefore, in the light irradiation device 100, at least a part of the plurality of light emitting elements 20 is provided to be inclined with respect to the front-back direction which is the first direction P. That is, in the light irradiation device 100, at least a part of the plurality of light emitting elements 20 is provided so that the optical axis is inclined with respect to the front-back direction. In the light irradiation device 100, as an example, the plurality of light emitting elements 20 are inclined inward so that their optical axes intersect at the front.
  • the plurality of light emitting elements 20 are inclined at positions avoiding the center of the air flow 42 such that the optical axis of the light emitting element 20 is directed to a portion where the center of the air flow 42 of the irradiated part 70 is in contact.
  • the plurality of light emitting elements 20 may be inclined outward so that their optical axes open forward. Such a direction of inclination can be set according to the directivity of the light emitting element. Such an inclination can be set, for example, in a range of 3 degrees to 30 degrees.
  • the optical axes of the plurality of light emitting elements 20 are provided to be inclined inward by 3 degrees with respect to the front-back direction.
  • the temperature of the light emitting element of the light emitting unit and the electronic components around the light emitting element may rise.
  • the life of the light emitting element and the electronic components is shortened. Therefore, it is desirable that the light emitting element and the electronic components around the light emitting element are used while being cooled. Therefore, in the light irradiation device 100, as shown in FIG. 3, at least some of the plurality of light emitting elements 20 are arranged in a region where the airflow 42 passes. That is, the plurality of light emitting elements 20 are arranged in a range extending forward from the outlet 114. In this case, the plurality of light emitting elements 20 are cooled by the airflow 42 sent out from the outlet 114, and the temperature rise is suppressed.
  • the light emitting unit 10 is configured such that at least a part of the electronic component 14 electrically connected to any of the plurality of light emitting elements 20 passes through the airflow 42. Are located in That is, at least a part of the electronic component 14 is arranged so that heat dissipation is promoted by the airflow 42. In this case, since the air flow 42 hits the electronic component 14, the electronic component 14 is cooled and the temperature rise is suppressed.
  • the light irradiation device 100 when the light emitting unit 10 is separated from the irradiated portion 70 by a predetermined distance or more, the current supplied to the light emitting unit 10 is cut off or reduced. A part 32 is provided. That is, in the light irradiation device 100, the light emitting unit 10 is energized and outputs the light flux 28 while the light emitting unit 10 is approaching the irradiated portion 70, and substantially stops energizing when the light emitting unit 10 moves away from the irradiated portion 70. It is configured to be.
  • the current limiting unit 32 may be configured to, for example, detect a distance from the light emitting unit 10 and control energization to the light emitting unit 10 according to the detected distance.
  • the current limiting unit 32 may be configured to supply current to the light emitting unit 10 when the light emitting unit 10 comes into contact with the irradiated portion 70 or its periphery. When the light emitting unit 10 moves away from the head, the output of the light beam 28 automatically decreases, so that the possibility that the light beam 28 enters the eyes can be reduced. 1 and 2, the illustration of the current limiting section 32 is omitted for easy understanding.
  • the light irradiation device may be used, for example, by dividing a head into a plurality of irradiated portions and for a predetermined time for each irradiated portion.
  • the use time for each irradiated portion can be preferably in a range of 3 seconds to 30 seconds, more preferably in a range of 5 seconds to 20 seconds.
  • the use time for each irradiated part is short when the light flux of the light irradiation device is large, and long when the light flux is small. It is convenient for the user if a signal is output about such use time.
  • the light irradiation device 100 includes a signal output unit 34 configured to output a signal that can be perceived by the user at a predetermined timing, as shown in FIG.
  • the cue output unit may output a beep sound 34e as a cue every set time (for example, 10 seconds).
  • the user can switch and use the used position at the timing of the signal.
  • the signal is not particularly limited as long as it can be perceived by the user. 1 and 2, the signal output unit 34 is omitted from the illustration.
  • the signal output unit 34 outputs a signal using at least one of sound, vibration, and light at a timing when a predetermined time has elapsed from the start of the current supply to the light emitting unit 10. It is configured. As an example, the signal output unit 34 may output a beep sound 34e as a signal at a timing when a set time (for example, 5 seconds) has elapsed from the start of the supply of the current to the light emitting unit 10. The user can switch and use the use position at the timing of the beep sound 34e. In this case, the use times for the respective irradiated portions are easily made uniform.
  • the light irradiation device When the light irradiation device can be separated into several blocks, the storage becomes compact and it is convenient to carry. On the other hand, it is desirable that the light irradiation device can supply power to only one of the light emitting unit and the blowing unit and supply power to the other. Therefore, in the light irradiation device 100, the light emitting unit 10 is detachably attached to the first direction P side of the blower unit 40. In particular, the light emitting unit 10 is provided so as to be manually attached to and removed from the blower unit 40 without using a tool.
  • the light emitting section 10 has a second contact section 38 for receiving a current supply from the blower section 40.
  • the blower 40 has a first contact portion 36 that is electrically connected to the second contact portion 38 when the light emitting unit 10 is mounted.
  • the light irradiation device 100 can be housed separately in the light emitting unit 10 and the blowing unit 40. Further, the light irradiation device 100 can also supply power to the light emitting unit 10 via the first contact part 36 and the second contact part 38 only by attaching the light emitting unit 10 to the blowing unit 40 and supplying power to the blowing unit 40 side.
  • the first contact portion 36 can be provided on the inner side near the airflow 42 of the housing 110, which is the outer shell of the blower 40, or on the outer side opposite to the airflow 42.
  • a first contact portion 36 is provided on an outer peripheral portion of a cylindrical portion 82 which is a first direction end of a casing 110 described later.
  • the blower unit 40 includes a housing 110, a grip unit 108, a suction port 116, a blowout port 114, an impeller 43, a motor 41, a heater 44, a control unit 50, a switch A portion 52, a passage portion 118, a first contact portion 36, a power supply portion 124, and a cylindrical portion 82 are included.
  • the housing 110 is an outer shell of the blower unit 40 and accommodates and holds main components of the blower unit 40 therein.
  • the housing 110 is a hollow, substantially cylindrical member, and can be formed from a resin material by a molding process.
  • the grip portion 108 is a portion to be gripped by the user with a hand, and is attached so as to protrude downward from the lower surface of the outer periphery near the rear of the housing 110.
  • the grip portion 108 may be connected to the housing 110 via a hinge means that enables bending.
  • the suction port 116 is an opening for introducing air to be blown into the housing 110 from the atmosphere space, and is provided, for example, on the rear side of the housing 110.
  • the suction port 116 may be provided with a mesh member (not shown) for suppressing intrusion of foreign matter.
  • the outlet 114 is an opening for sending the airflow 42 and is provided on the front side of the housing 110.
  • the outlet 114 may be provided with a mesh member (not shown) for suppressing intrusion of foreign matter.
  • the impeller 43 is a blade member that pushes rear air forward by rotating, and can be formed, for example, from a resin material by a molding process.
  • the impeller 43 is provided in the housing 110 on the front side of the suction port 116.
  • the motor 41 is an electric motor for rotationally driving the impeller 43, and rotates when a current is supplied from the control unit 50.
  • the motor 41 is provided on the front side of the impeller 43 in the housing 110, and the rotation shaft (not shown) of the motor 41 is fixed to the center of the impeller 43.
  • the heater 44 is an electric heater for heating the air flow pushed out by the impeller 43, and generates heat when a current is supplied from the control unit 50.
  • the heater 44 is provided on the housing 110 in front of the motor 41.
  • the control unit 50 is configured to control the power supplied from the power supply unit 124 and supply current to each of the motor 41, the heater 44, and the light emitting unit 10 according to the state of the switch unit 52.
  • the control unit 50 is accommodated and fixed in the grip unit 108, for example.
  • the control unit 50 may be housed in the housing 110. From the viewpoint of restricting excessive irradiation to the irradiated part 70, a means for restricting the irradiation light amount of the light emitting unit 10 may be provided.
  • the control unit 50 may be configured to limit the power supply to the light emitting unit 10 based on a value obtained by a predetermined calculation using the supply current and the supply time to the light emitting unit 10 as parameters.
  • the switch unit 52 is a member for switching the operation mode of the light irradiation device 100.
  • the switch unit 52 may include a mechanical switch having a mechanical contact or an electronic switch that detects a contact of a finger and switches electronically.
  • the switch section 52 is attached to the grip section 108 such that the projecting section 52a projects from the opening 108a on the front side of the grip section 108.
  • the switch unit 52 is configured to switch between a plurality of modes by pushing the protrusion 52a backward. For example, from the entire off state, the first pushing-in supplies a current to the motor 41 to start blowing, the second pushing-in supplies a current to the light emitting unit 10 to start emitting light, and the third pushing-in emits light.
  • the switch unit 52 can include a plurality of electric switches.
  • the switch unit 52 may include a light emission control switch for starting or stopping power supply to the light emitting unit 10.
  • the light emission control switch is configured to start or stop power supply according to the attitude of the light irradiation device 100. You may.
  • the light emission control switch may be configured to start supplying power to the light emitting unit 10 when the light irradiation device 100 is in a predetermined posture (for example, the posture in which the light emitting unit 10 faces the head).
  • the blower unit 40 is provided with an electric cable 126 for supplying a current to the light emitting unit 10 when the light emitting unit 10 is mounted.
  • the first contact portion 36 has a contact for being electrically connected to the second contact portion 38, and is electrically connected to an output portion of the control unit 50 by an electric cable 126.
  • the passage portion 118 is a passage for protecting the electric cable 126 connected from the control unit 50 to the light emitting unit 10 from the heat of the heater 44.
  • the electric cable 126 is wired through a tubular passage 118 provided inside, for example, the housing 110 that is the outer shell of the blower 40.
  • the passage 118 is provided below the housing 110 to accommodate the electric cable 126.
  • the power supply unit 124 is an electric circuit for transmitting power supplied from a power supply cable (not shown) to the control unit 50, and is housed and fixed in the grip unit 108.
  • the power supply unit 124 may include a rectifier circuit and a smoothing circuit.
  • the cylindrical portion 82 is a hollow cylindrical portion provided at the end in the first direction P of the blower 40 (see also FIG. 1).
  • An outlet 114 for sending the air flow 42 is formed inside the cylindrical portion 82.
  • the tubular portion 82 is fitted with a fitting tubular portion 84 of the light emitting unit 10 described later. In particular, at least the distal end of the tubular portion 82 is housed inside the fitting tubular portion 84.
  • FIG. 12 is an enlarged sectional view of the tubular portion 82 and a fitting tubular portion 84 described later.
  • the tubular portion 82 is provided with an attachment / detachment mechanism for attaching and detachably attaching the light emitting unit 10 to the blower unit 40.
  • the cylindrical portion 82 is provided with a fitting outer peripheral surface 82a provided in front of the housing 110 and a claw portion 82b provided on the fitting outer peripheral surface 82a.
  • the fitting outer peripheral surface 82a is formed to have a smaller diameter than, for example, a region on the rear side thereof.
  • One or more (for example, two) claw portions 82b may be provided on the fitting outer peripheral surface 82a.
  • the fitting outer peripheral surface 82a is configured to be fitted to the fitting inner peripheral surface 84a of the fitting cylindrical portion 84.
  • the claw portion 82b is configured to engage with a step portion 84b of a fitting tube portion 84 described later.
  • the light emitting unit 10 includes a housing 30, a vent 86, a cover member 18, a hood member 15, a wiring board 13, an electronic component 14, a plurality of light emitting elements 20,
  • the contact portion 38 and the fitting tube portion 84 are included.
  • the housing 30 is a hollow, substantially cylindrical member for accommodating and holding main components of the light emitting unit 10 therein.
  • the housing 30 fits into a housing tubular portion 31 that houses the annular wiring board 13 that fixes the plurality of light emitting elements 20, and a tubular portion 82 that is provided at an end 40 a on the first direction P side of the blower 40.
  • the fitting cylinder 84 includes an intermediate cylinder 17 provided between the housing cylinder 31 and the fitting cylinder 84. As shown in FIG. 3, the intermediate cylindrical portion 17 has an inner diameter smaller than the outer diameter of the wiring board 13. As compared with the case where the inside diameter is large, the ratio of the airflow 42 diffusing on the inside of the wiring board 13 can be reduced.
  • the intermediate cylindrical portion 17 has an inner diameter smaller than the outer diameter of the front end of the cylindrical portion 82 of the blower 40. Compared with the case where the inside diameter is large, the intermediate cylinder portion 17 can suppress the diffusion of the airflow 42 and can be collected near the center. By collecting the air flow 42 near the center, the air flow 42 can be efficiently sent to the irradiation target 70 illuminated by the light flux 28.
  • One or more (for example, four) ventilation holes 86 are formed in the outer peripheral portion of the intermediate cylindrical portion 17 of the housing 30 so as to communicate the inside and the outside of the housing 30. Provision of the ventilation port 86 facilitates ventilation of the air inside the housing 30 and suppresses a rise in the temperature of the irradiated portion 70.
  • the housing 30 can be formed, for example, from a resin material by a molding process.
  • the cover member 18 is a substantially disk-shaped member provided perpendicular to the front-rear direction (direction X), and has an inner peripheral portion 18j and an outer peripheral portion 18k.
  • the cover member 18 is formed in a shape surrounding the periphery of the air flow 42 on the first direction P side of the blower 40.
  • the cover member 18 may be formed in a hollow ring shape.
  • the resistance of the airflow 42 can be suppressed by forming the cover member 18 to be hollow.
  • the cover member 18 can be formed by, for example, a molding process from a resin material having good light transmittance.
  • a plurality of (for example, 24) protruding portions 19 protruding forward are provided on the front side of the cover member 18.
  • the protruding portion 19 has a shell shape such as a hemisphere connected to the tip of a cylinder.
  • the cover member 18 has a plurality of recesses 19b for accommodating the distal ends of the plurality of light emitting elements 20, respectively.
  • the plurality of (for example, 24) concave portions 19 b are provided so as to be depressed forward on the rear side of the cover member 18.
  • the concave portion 19b corresponds to the projecting portion 19.
  • the cover member 18 has a plurality of protrusions 19 protruding in the first direction P on a surface opposite to a surface on which the plurality of recesses 19b are provided.
  • the hood member 15 is a hollow cylindrical member extending in the front-rear direction (direction X) and has an inner peripheral portion 15j and an outer peripheral portion 15k.
  • the hood member 15 can be formed, for example, from a resin material by a molding process.
  • the hood member 15 may be formed of a material having a lower light transmittance than the cover member 18.
  • a reflective surface may be formed on the inner surface of the hood member 15.
  • the hood member 15 may be formed so as to be attached to and detached from the light emitting unit 10 in a state where the hood member 15 is integrated with the cover member 18.
  • the light emitting unit 10 includes a wiring board 13 which is a printed wiring board for fixing the plurality of light emitting elements 20.
  • the wiring board 13 has a substantially disc shape provided perpendicular to the front-rear direction.
  • the wiring board 13 has a ring shape surrounding the airflow 42 on the first direction P side of the blower 40 (see also FIGS. 1 and 3).
  • the wiring board 13 has an inner peripheral portion 13j and an outer peripheral portion 13k.
  • the outer peripheral portion 13k of the wiring board 13 is fixed to the step portion of the housing 30 by screwing or bonding.
  • the electronic component 14 may include a resistor that limits a current flowing through the plurality of light emitting elements 20, a capacitor that smoothes a voltage, and the like.
  • the electronic component 14 is fixed, for example, to the front surface or the rear surface of the wiring board 13 by soldering.
  • the plurality of light emitting elements 20 include a plurality of (for example, 24) LEDs 20m arranged on the front side of the wiring board 13 at substantially equal intervals in the circumferential direction.
  • the LED 20m there is no particular limitation on the LED 20m, but in the light irradiation device 100 of the embodiment, an LED having a wavelength of 620 to 670 nm (red) is selected.
  • an LED having a wavelength of 620 to 670 nm (red) is selected.
  • the light amount be kept within a range where the irradiated portion 70 is not damaged such as sunburn, and more preferably within a range where the user does not feel itching.
  • the light quantity of the plurality of light emitting elements 20 is set so that the above-mentioned light quantity time product can be obtained in one irradiation time of one place in a range of 3 seconds to 30 seconds, more preferably in a range of 5 seconds to 20 seconds. You may.
  • the second contact portion 38 has a contact for being electrically connected to the first contact portion 36, and is electrically connected to the plurality of light emitting elements 20 by an electric cable 128. ing.
  • the second contact portion 38 is provided, for example, on the inner peripheral portion of the fitting tube portion 84. With the light emitting unit 10 attached to the blower unit 40, the two contacts of the second contact unit 38 are electrically connected to the two contacts of the first contact unit 36, respectively.
  • the fitting tube portion 84 is provided with an attachment / detachment mechanism for attaching and detachably attaching the light emitting unit 10 to the blower unit 40.
  • the fitting cylindrical portion 84 is formed with a fitting inner peripheral surface 84a provided behind the housing 30 and a step portion 84b formed on the fitting inner peripheral surface 84a.
  • One or more (for example, two) step portions 84b may be provided on the fitting inner peripheral surface 84a.
  • the fitting inner peripheral surface 84a is configured to fit to the fitting outer peripheral surface 82a of the tubular portion 82.
  • the step portion 84b is configured to engage with the claw portion 82b of the tubular portion 82.
  • the current limiting unit 32 is configured to cut off or reduce the current supplied to the light emitting unit 10 when the light emitting unit 10 is separated from the irradiated portion 70 by a predetermined distance or more.
  • the current limiting unit 32 includes a sensor unit 32a, and is configured to cut off or reduce the current supplied to the light emitting unit 10 according to the state of the sensor unit 32a.
  • a limit switch whose output state changes in response to a mechanical contact, or a distance sensor using light or sound waves can be used.
  • the sensor unit 32a is attached to the outer peripheral portion of the housing 30, as shown in FIG.
  • the sensor section 32a has a tip section 32e which is a projecting section that projects in the first direction P side.
  • the sensor section 32a has a built-in limit switch 32b that is turned on when the tip section 32e is pressed in contact with the irradiated section 70.
  • the limit switch 32b is connected in series to the light emitting unit 10.
  • the light emitting unit 10 is configured to start emitting light at the timing when the distal end portion 32e contacts the irradiated portion 70.
  • the switching distance between energization and non-energization can be set to a desired distance.
  • the light emitting unit 10 may be configured to stop emitting light when a preset timer time elapses from the timing when the distal end portion 32e contacts the irradiated portion 70.
  • the light emitting unit 10 emits at least one of sound, vibration, and light when a preset timer time elapses from the timing at which the tip end 32e, which is the overhanging part, comes into contact with the irradiation target unit 70.
  • the used signal may be output. Such a signal can be output by providing a signal output unit 34 described later.
  • the operation timing instead of the timing at which the distal end portion 32e contacts the irradiated portion 70, the timing at which the distal end portion 32e approaches the irradiated portion 70 within a predetermined distance or less may be used. Good.
  • the signal output unit 34 is configured to output a signal using at least one of sound, vibration, and light at a predetermined timing.
  • the signal output unit 34 is provided in the light emitting unit 10 or the blowing unit 40.
  • the signal output unit 34 is provided on the outer peripheral portion of the housing 30, as shown in FIG.
  • the signal output unit 34 is configured to output a signal at a timing when a predetermined time has elapsed from the start of the current supply to the light emitting unit 10. As shown in the block wiring diagram of FIG.
  • the signal output unit 34 includes a timer unit 34a whose output state changes from off to on when a set timer time has elapsed after the start of energization of the light emitting unit 10, and a timer unit 34a.
  • Buzzer means 34b for generating a beep sound 34e when the output state is on.
  • the timer means 34a becomes active when the light emitting unit 10 is energized, and starts counting time.
  • the timer means 34a supplies power to the buzzer means 34b to generate a beep sound 34e.
  • the timer unit 34a is reset, and the buzzer unit 34b stops. Further, when the light emitting unit 10 is energized, the timer means 34a becomes active, and the signal output unit 34 repeats the above operation.
  • a method of using the light irradiation device 100 configured as described above will be described.
  • a first usage mode the blowing unit 40 is in a non-operation state, and only the light emitting function of the light emitting unit 10 is used. This mode is referred to as a first mode.
  • the switch unit 52 is operated to switch the light irradiation device 100 to the first mode. In this state, the current limiting unit 32 is operating, and the light emitting unit 10 is in a non-light emitting state.
  • the light emitting portion 10 When the light emitting unit 10 is brought close to the head and the distal end portion 32e comes into contact with the irradiated portion 70, the light emitting portion 10 is energized, starts emitting light, and irradiates the irradiated portion 70 with the light flux 28.
  • the timer means 34a is activated, and for example, when the set time of 10 seconds elapses, the buzzer means 34b generates a beep sound 34e.
  • the user temporarily releases the light emitting unit 10 from the head in response to the beep sound 34e. In this state, the light emission and the beep sound 34e stop.
  • the same operation as described above is repeated. By repeating these operations, the light beam 28 can be received in a desired range of the head.
  • Second usage mode In a second usage mode, the air blowing unit 40 is set to a state in which cool air is blown without heating, and is used together with the light emitting function of the light emitting unit 10. This mode is referred to as a second mode.
  • the switch unit 52 is operated to switch the light irradiation device 100 to the second mode. In this state, the unheated air flow 42 sent by the blower 40 passes through the middle hole 16 of the light emitting unit 10 and is discharged from the outlet 16b. When the light emitting unit 10 is brought close to the head, the air flow 42 hits the head.
  • the light emitting unit 10 when the light emitting unit 10 is moved closer to the head and the tip 32e contacts the irradiated portion 70, the light emitting unit 10 is energized and starts emitting light, so that the irradiated portion 70 is irradiated with the light flux 28. That is, in this state, the non-heated air flow 42 and the light flux 28 simultaneously hit the irradiated portion 70.
  • the beep sound 34e is generated at a predetermined timing by operating the signal output unit 34.
  • the user repeats the same operation as described above by placing the light emitting unit 10 on the irradiated portion 70 at another position on the head in response to the beep sound 34e. By repeating these operations, the user can simultaneously receive the unheated air flow 42 and the light flux 28 in a desired area of the head.
  • a third usage mode the air blowing unit 40 is set to a state in which warm air is blown, and is used together with the light emitting function of the light emitting unit 10. This mode is referred to as a third mode.
  • the switch unit 52 is operated to switch the light irradiation device 100 to the third mode.
  • the heated airflow 42 sent by the blower 40 passes through the middle hole 16 of the light emitting unit 10 and is discharged from the outlet 16b.
  • the following operation is the same as that of the second mode of use, and by repeating this operation, it is possible to simultaneously receive the airflow 42 and the light beam 28 heated to a desired range of the head.
  • a fourth usage mode the light emitting unit 10 is in a non-operation state, and only the blowing function of the blowing unit 40 is used.
  • the light emitting unit 10 may be used in a state where it is detached from the blower unit 40 or may be used in a state where it is attached.
  • This mode is referred to as a fourth mode.
  • the switch unit 52 is operated to switch the light irradiation device 100 to the fourth mode.
  • the unheated or heated airflow 42 sent by the blower 40 passes through the middle hole 16 of the light emitting unit 10 and is discharged from the outlet 16b.
  • the fourth mode of use the user can receive an unheated or heated airflow 42 in a desired area of the head.
  • the signal output unit 34 may or may not be used.
  • the light irradiation device 100 may be used in a state where at least a part of the light emitting unit 10 on the front side, which is the first direction P side, is in contact with the head.
  • the light irradiation device 100 can be used with a part thereof in contact with the head. By using in this manner, the amount of light leaking outward can be reduced.
  • the cover member 18 has a plurality of protrusions 19 protruding in the first direction P on a surface opposite to a surface on which the plurality of recesses 19b are provided.
  • the protruding portion 19 is divided between body hairs such as head hairs, so that the density of body hairs such as head hairs can be reduced.
  • the intermediate cylinder portion 17 has an inner diameter smaller than the outer diameter of the first direction end of the blower portion 40. According to this configuration, the air flow 42 can be efficiently sent to the irradiated portion 70 illuminated by the light beam 28 by narrowing the air flow 42 and collecting it near the center.
  • the intermediate cylinder 17 is provided with one or a plurality of openings 86, which are openings for communicating the inside and the outside of the intermediate cylinder. According to this configuration, ventilation of the air inside the housing 30 is promoted, and a rise in the temperature of the light emitting unit 10 can be suppressed.
  • the light irradiation device 100 includes a blowing unit 40 for sending out an air flow 42 flowing in the first direction P, and a light emitting unit 10 for outputting a light beam 28 for illuminating the skin or body hair that is the irradiation target 70.
  • the light emitting unit 10 is provided on the first direction P side of the blowing unit 40. With this configuration, in the light irradiation device 100, the irradiated portion 70 can receive the light flux 28.
  • the blowing unit 40 is configured to send the airflow 42 toward the irradiation target 70, so that the irradiation target 70 can receive the airflow 42 together with the light flux 28.
  • the possibility that the plurality of light-emitting elements 20 directly contact the irradiation target unit 70 can be reduced.
  • the cover member 18 since the cover member 18 has the plurality of protrusions 19 protruding in the first direction P side, the protrusions 19 are divided between the hairs, and the concentration of the hairs can be reduced. . Further, in the light irradiation device 100, since the cover member 18 is provided with the concave portion 19b for accommodating at least a part of the plurality of light emitting elements 20, the distal end of the light emitting element 20 can be accommodated in the concave portion 19b. Further, in the light irradiation device 100, since the cover member 18 is formed of a material that attenuates the ultraviolet light, the cover member 18 can attenuate the ultraviolet light of the light flux 28.
  • the cover member 18 has a retreat area 18a that retreats toward the blower unit 40 in the front-rear direction that is the first direction P, and an advance that moves forward in the first direction P from the retreat area 18a. And the region 18b, the cover member 18 can correspond to the curved shape of the irradiated portion 70.
  • the hood member 15 surrounding the light beam 28 on the first direction P side is provided in the light emitting unit 10, the hood member 15 can cover the light beam 28.
  • the light emitting unit 10 since the light emitting unit 10 includes the plurality of light emitting elements 20, the light emitting unit 10 can emit light by the plurality of light emitting elements 20.
  • the plurality of light emitting elements 20 are arranged in the front-back direction, which is the first direction P, from the light emitting element 20a that retreats to the blower side in the first direction P and the light emitting element 20a that retreats. And the light emitting element 20b that is advancing in one direction, so that the plurality of light emitting elements 20 can correspond to the curved shape of the irradiated portion 70.
  • At least a part of the plurality of light emitting elements 20 is provided to be inclined with respect to the front-rear direction which is the first direction P, so that the plurality of light emitting elements 20 are inclined from the first direction P.
  • a light emitting element can be included.
  • At least a part of the plurality of light emitting elements 20 is arranged in a region through which the air flow 42 passes. Can be included.
  • the light emitting unit 10 is disposed in a range where at least a part of the electronic component 14 electrically connected to any of the plurality of light emitting elements 20 passes through the airflow 42.
  • 10 may include electronic components located in the area through which the airflow 42 passes.
  • the light irradiation device 100 includes the current limiting unit 32 configured to cut off or reduce the current supplied to the light emitting unit 10 when the light emitting unit 10 is separated from the irradiated unit 70 by a predetermined distance or more. When the user is away from the irradiation unit 70, the current of the light emitting unit 10 can be changed.
  • the light irradiation device 100 includes the signal output unit 34 configured to output a signal that can be perceived by the user at a predetermined timing, the user can perceive the arrival of the predetermined timing by the signal. .
  • the signal output unit 34 is configured to output a signal using at least one of sound, vibration, and light at a timing when a predetermined time has elapsed from the start of the supply of the current to the light emitting unit 10. Therefore, the user can perceive the arrival of the timing at which the predetermined time has elapsed by at least one of sound, vibration, and light.
  • the light emitting unit 10 is provided so as to be attachable to and removable from the blower unit 40, and the blower unit 40 has a first contact portion 36 for supplying a current to the light emitting unit 10. Since the light emitting section 10 has the second contact section 38 electrically connected to the first contact section 36 in a state where the light emitting section 10 is attached to the blower section 40, the light irradiation device 100 removes the light emitting section 10. be able to.
  • Modification 1 In the light irradiation device 100, an example in which an LED that outputs red light is used has been described, but the present invention is not limited to this. For example, LEDs that output green or blue light may be used, or LEDs that output light of different colors may be used in combination.
  • Modification 2 In the light irradiation device 100, an example in which an LED or an LD is used as a light emitting element has been described, but the present invention is not limited to this.
  • another type of light emitting element such as an organic EL element may be used.
  • the blowing unit 40 mainly has the form of a hand-held hair dryer has been described, but the present invention is not limited to this.
  • the blower of the light irradiation device may be supported by a stand.
  • the light irradiation device may have a bowl-shaped housing unit that houses at least a part of the head, and the blowing unit and the light emitting unit may be provided in the housing unit.
  • the plurality of light emitting elements 20 are arranged in a single annular shape at substantially rotationally symmetric positions, but the invention is not limited thereto.
  • the plurality of light emitting elements may be arranged in a multiple ring.
  • the plurality of light emitting elements may be arranged at point-symmetric or line-symmetric positions.
  • the plurality of light emitting elements may be arranged at asymmetric positions that are neither point symmetric nor line symmetric.
  • the plurality of light emitting elements may include portions arranged in an array or a matrix.
  • the light irradiation device of the present invention may include a means for sending air containing negative ions, a means for sending mist obtained by atomizing a liquid such as water or a serum, or the like.
  • the above-described light irradiation device is configured so that the light irradiated to the irradiation site has a predetermined range of wavelength and irradiation energy including 638 nm capable of promoting hair growth or hair growth at the irradiation site. An embodiment will be described.
  • the light irradiation device of the first aspect uses an LED having a temperature characteristic such that light having a wavelength in a predetermined range including 638 nm is output in the range of the temperature of the air sent from the blower, A circuit capable of compensating the temperature characteristics of the LED so that light of a predetermined range including the wavelength is output from the LED is mounted.
  • FIG. 14 shows the temperature characteristics of this LED lamp.
  • the inventor has verified by experiment that the LED lamp has the claimed temperature characteristics.
  • the ambient atmosphere temperature was set to 25 ° C, 35 ° C, 45 ° C, and 55 ° C, and a current of 30 mA, 40 mA, and 50 mA was supplied to the LED, and the LED was continuously turned on for 120 minutes.
  • the wavelength of the light was measured with an instrument.
  • FIG. 14 shows a temporal change of the light intensity and a temporal change of the peak value of the wavelength at each environmental atmosphere temperature when the maximum rated current of 50 mA is supplied.
  • the peak value of the wavelength shifts to the longer wavelength side as the temperature rises, the peak value of the wavelength is in the range of 634 nm to 639 nm including 638 nm at any ambient temperature. Further, the light intensity was kept almost constant regardless of the ambient temperature. As described above, it was confirmed that by using the LED of the above-described model number, light having a wavelength in a predetermined range including 638 nm was output in the range of the temperature of the air sent from the blower.
  • the light irradiation device of the first aspect uses an LED having a temperature characteristic such that light having a wavelength in a predetermined range including 638 nm is output in the range of the temperature of the air sent from the blower, or 638 nm Since a circuit capable of compensating the temperature characteristics so that light of a predetermined range including the wavelength is output from the LED is mounted, air sent from the blower hits the LED, and the LED is sent from the blower. There is no problem if it is heated by air. Therefore, in the light irradiation device of the first aspect, the light emitting unit may be provided on the outer peripheral portion outside the airflow sent from the blowing unit as in the light irradiation device 100 described above.
  • a light-emitting unit may be provided near the inner center, or a light-emitting unit may be provided over the entire surface of the air outlet.
  • the light emitting unit may be provided at a position between the blowing unit and the irradiation target when the irradiation target emits light.
  • the light irradiation device of the second aspect mounts the blower and the LED in a positional relationship such that the LED is not heated or hardly heated by air sent from the blower of the light irradiation device. That is, the light emitting unit is provided at a position deviating from between the blower unit and the irradiated portion when irradiating the irradiated portion with light.
  • a light emitting unit may be provided on the outer peripheral portion outside the airflow sent from the blower unit.
  • the LED is disposed at a position that is hardly affected by the temperature of the airflow sent from the blower, light having a wavelength in a predetermined range including 638 nm is output at room temperature.
  • an LED it is possible to use an LED having a temperature characteristic such that light having a wavelength out of a predetermined range including 638 nm is output at the temperature of the air flow sent from the blower.
  • the light irradiation device detects the wavelength or irradiation energy of light applied to the irradiated portion or the vicinity thereof, and determines the wavelength or irradiation energy of light output from the LED based on the detected wavelength or irradiation energy. Control dynamically.
  • the light irradiation device includes a light detection unit for detecting the wavelength or irradiation energy of light applied to the irradiation target site.
  • the control unit is based on the wavelength or the irradiation energy of the light irradiated to the irradiation target detected by the light detection unit, and the light emitting unit or the light is irradiated such that the light irradiated to the irradiation target has a predetermined wavelength and irradiation energy. Control the circuit.
  • the LED and a circuit for supplying power to the LED are provided.
  • the light to be irradiated to the irradiated portion can have a predetermined wavelength and irradiation energy, so that the effects of hair growth and hair growth at the irradiated portion can be exhibited.
  • the light irradiation devices of the first to third aspects may include a temperature detection unit for detecting the temperature of the irradiation target.
  • the control unit controls the light emitting unit, the blowing unit, or the circuit based on the temperature of the irradiation target detected by the temperature detection unit so that the temperature of the irradiation target becomes a temperature within a predetermined range.
  • the temperature of the irradiated portion can be maintained at a temperature at which the effects of hair growth and hair growth can be enhanced.
  • the temperature can be appropriately controlled so that the temperature of the irradiated portion does not rise due to light irradiation and a burn or the like does not occur.
  • the light irradiation device is provided to abut on a portion around the irradiated portion when irradiating the irradiated portion with light, and to separate the irradiated portion from the light emitting unit and the blowing unit. May be provided.
  • the light detection unit or the temperature detection unit may be provided on the spacer. This makes it possible to detect the light and temperature to be irradiated at a position closer to the irradiated portion, and to more accurately control the wavelength, illuminance and temperature of the light.
  • Example 1 mouse hair growth experiment
  • the light irradiation device according to the above-described embodiment was prototyped, and a hair growth experiment was performed on the mouse using the prototype.
  • the wavelength range of the light emitting section of the prototype is 620 to 640 nm
  • the irradiation energy is 1.0 J / cm 2
  • the temperature of the hot air sent out is about 42 ° C. at room temperature.
  • a 6-week-old C3H / He male mouse (Nippon SLC Co., Ltd.) was purchased, and after one week of preliminary breeding, the experiment was started from the age of 7 weeks.
  • Six mice in each of Test Group 1, Test Group 2, and Control Group were housed in polycarbonate cages and bred at room temperature 23 ° C. ⁇ 3 ° C. with illumination for 12 hours per day.
  • Nippon Agricultural Industry Co., Ltd. Standard materials and water were freely available.
  • test group 1 contained 1, 3, 6, 8, 10, 13, 15, 17, 20, 22, 24, 27, 29, 31 from the start of the experiment.
  • 34, 36, and 38 irradiate the LED light for 1 minute and send warm air to the test day, and irradiate the test group 2 with the LED light for 1 minute on the same day as the test group 1;
  • the control group was not irradiated with the LED light and was not blown.
  • the shaved portion was photographed, and the area ratio of the hair-grown portion to the shaved portion was calculated using image analysis software, which was defined as the hair growth rate.
  • FIG. 15 shows the results of mouse hair growth experiments. Hair growth was confirmed from the 17th day in the test group 1 and test group 2 individuals. On the 34th day, the hair growth rate of the test group 1 individual showed a significant difference from the control group. On day 41, the hair growth rate of the test group 2 individual also showed a significant difference from the control group. It can be seen that the hair growth rate of the test group 1 individual is higher than that of the test group 2 individual. As described above, it was confirmed that blowing warm air in addition to irradiating red LED light is more effective for hair growth than irradiating red LED light.
  • test group 2 Although there was a tendency for improvement from before the start of the experiment, it was suggested that the transmittance was relatively high and the tissue density was low.
  • test group 1 a dense and clear image was observed in all the hair shafts. In test group 2, a clear image was observed except for a part. From these results, it was confirmed that the hair quality was improved by irradiation of the red LED light, and a hair care effect was obtained. This is considered to suggest that hair growth factors may positively act on hair quality improvement.
  • the hair quality improvement effect it was suggested that blowing warm air in addition to the irradiation of the red LED light was more effective than simply irradiating the red LED light.
  • Example 2 Human hair growth experiment
  • a human hair growth experiment was performed. A total of 20 women (38 to 55 years old) and 8 men (41 to 67 years old) who want to perform thin hair care and hair care and do not suffer from lifestyle-related diseases, etc. The experiment was carried out for subjects with an average age of 46.5 years). At the start of the experiment, the state of the subject's hair greatly differs from individual to individual, and the history of thin hair also differs greatly. Since it is difficult to unify the background, these individual differences are not considered.
  • a placebo period of 2 to 3 months from the start of the experiment was used as a control period, informing that the invisible light was irradiated, and implying that the invisible light would be effective for thinning hair care and hair care.
  • An experimental machine that does not actually emit LED light was used. After that, it was replaced with the same prototype as in Example 2 and continued to be used, and irradiation of red LED light and blowing of hot air were performed.
  • the irradiation time and the number of uses of the red LED light by the prototype are not limited, so that the irradiation energy depends on the hair dryer usage habits of each subject.
  • the reproducibility of the measurement site was ensured by shaving the subject's body hair and marking the skin before the start of the experiment, but this analysis method burdens the subject. Is large and may interfere with social life. Therefore, in this experiment, an analysis was performed by the hue histogram method as a first analysis method.
  • the image of the subject's head was decomposed into hues and binarized to calculate the area ratio of the hair.
  • the first analysis method is suitable for qualitatively observing hair growth and hair growth, but it is difficult to reproduce imaging conditions every time, and therefore, it is difficult to perform quantitative analysis.
  • the hair spacing of the hair was about 700 to 1200 ⁇ m for both males and females, although it varied depending on the site such as the crown and the temporal area, and the average was 780 ⁇ 180 ⁇ m.
  • the image of the measurement site of the subject was divided into meshes with this hair spacing, and the state of hair growth was expressed by binarizing whether or not each mesh had hair from pores. According to such an analysis method, it was found that the hair growth situation can be analyzed without being affected by hair dyeing or the like.
  • FIG. 16 shows the result of counting the number of meshes without hair growth. Since the smaller the count value is, the more the hair grows, the decrease in the count value indicates that the hair growth effect was obtained. As is clear from FIG. 16, the effect of hair growth was observed in all subjects. Irradiation sites are 3.5 sites per person on average, and the average irradiation time is about 10 seconds per part. None of the subjects complained of any side effects or discomfort, and all female subjects reported effective hair care, including "glossy hair” and "hair was easier to group.”
  • the light irradiation device of the present embodiment has an effect of promoting hair growth and hair growth.
  • FIG. 17 is a top perspective view of the light emitting unit 200 of the present embodiment as viewed obliquely from above.
  • the light emitting unit 200 may be mounted on the light emitting device 100 instead of the light emitting unit 10 shown in FIGS. 1 to 3, or may be mounted on the light emitting device 100 together with members such as the hood member 15 and the housing 30 that constitute the light emitting unit 10. It may be mounted on.
  • the plurality of light emitting elements 20 are arranged annularly so as to surround the airflow 42, and the optical axes are inclined inside a polygon having the positions of the plurality of light emitting elements 20 as vertices. Is provided. Accordingly, light emitted from the plurality of light emitting elements 20 can be condensed and radiated to a portion to be irradiated, so that the light irradiation efficiency can be improved.
  • the plurality of light emitting elements 20 are preferably arranged at the positions of the vertices of the regular polygon, and the optical axes of the respective light emitting elements 20 constitute side edges of the regular polygonal pyramid having the regular polygon as the bottom surface. Provided.
  • the angle of the optical axis of the plurality of light emitting elements 20 depends on the radius of the circumscribed circle of the regular polygon formed by the plurality of light emitting elements 20 and the distance from the plane defined by the regular polygon to the irradiated portion. May be determined.
  • the plurality of light emitting elements 20 may be arranged in an annular, semicircular, or arc shape.
  • a plurality of light emitting elements 20 may be further arranged inside a polygon having the positions of the plurality of light emitting elements 20 as vertices.
  • a plurality of light emitting elements 20 may be arranged so as to form a plurality of rings arranged concentrically.
  • the plurality of light emitting elements 20 may be arranged such that the optical axes of the plurality of light emitting elements 20 are concentrated at one point, or the plurality of light emitting elements 20 may be arranged such that two or more intersections exist. Good.
  • the plurality of light emitting elements 20 may be arranged such that the intersections of the optical axes of the plurality of light emitting elements 20 overlap the center of the airflow 42, or may be arranged so as not to overlap. When there are a plurality of intersections of the optical axes of the plurality of light emitting elements 20, the plurality of light emitting elements 20 may be arranged such that the center of gravity of the intersections overlaps the center of the airflow 42.
  • FIGS. 18A, 18B, and 18C are a plan view, a front view, and a rear perspective view, respectively, of the light emitting unit 200 of this embodiment.
  • the light emitting section 200 includes an upper case 210 and a lower case 220 that sandwich the wiring board 13 on which the plurality of light emitting elements 20 are arranged.
  • An opening 212 is provided in the upper case 210 at a position corresponding to the plurality of light emitting elements 20.
  • the plurality of light emitting elements 20 are provided such that at least a part of the shell-shaped sealing portion projects from the opening 212.
  • FIG. 19 schematically shows the constituent members of the light emitting section 200 of this embodiment.
  • This diagram schematically shows the arrangement relationship of a plurality of members constituting the light emitting unit 200, and therefore, the orientation and scale of each member are not always accurate.
  • the light emitting section 200 includes an upper case 210, a wiring board 13, and a lower case 220 in order from the side closer to the irradiated portion.
  • the light emitting unit 200 is mounted on the light irradiation device 100 such that the upper case 210 side closer to the irradiation site is forward and the lower case 220 side far from the irradiation site is rearward.
  • the wiring board 13 and the upper case 210 are sequentially stacked on the lower case 220, so that in the following description, as shown in FIG.
  • the direction perpendicular to the arrangement surface of the light-emitting element 13 is referred to as a vertical direction, and the side on which the light-emitting element 20 is disposed is referred to as an upper side.
  • FIGS. 20A, 20B, and 20C are a top perspective view, a rear perspective view, and a plan view, respectively, of the upper case 210 of the light emitting unit 200 of the present embodiment.
  • An opening 212 is provided in the upper case 210 at a position corresponding to the light emitting element 20.
  • the upper surface of the upper case 210 is provided so as to be lower from the outer periphery toward the center. That is, the upper surface of the upper case 210 is formed such that the outer peripheral side advances toward the irradiated portion and the central side retreats toward the blower 40.
  • the side surface 212j on the center side of the opening 212 of the upper case 210 is inclined so as to face diagonally upward.
  • FIGS. 21A, 21B, and 21C are a top view, a front view, and a rear view, respectively, of the wiring board 13 of the light emitting unit 200 according to the present embodiment.
  • the wiring board 13 has a donut shape, and the plurality of light emitting elements 20 are annularly arranged so as to surround the airflow 42.
  • the plurality of light emitting elements 20 are arranged on the wiring board 13, the plurality of light emitting elements 20 are arranged so that the optical axes of the plurality of light emitting elements 20 are vertically upward with respect to the upper surface of the wiring board 13.
  • the wiring board 13 is provided with a notch 24 for aligning the wiring board 13 with the lower case 220. Further, the wiring board 13 is provided with a wiring hole 26 for passing a wiring connecting the electrode terminals 23 of the plurality of light emitting elements 20 to the control unit 50.
  • FIGS. 22A, 22B, and 22C are a top perspective view, a front view, and a rear perspective view, respectively, of the lower case 220 of the light emitting unit 200 of the present embodiment.
  • the lower case 220 includes a bottom portion 224 on which the wiring board 13 is placed, and a tubular portion 222 that is inserted into the opening inside the wiring board 13 when the wiring board 13 is placed on the bottom portion 224. Is provided.
  • the cylindrical portion 222 is provided with a receiving portion 229 for receiving each of the plurality of light emitting elements 20 from obliquely below the inside of the polygon having the positions of the plurality of light emitting elements 20 as vertices.
  • the bottom surface 224 is provided with a wiring hole 226 for passing a wiring connecting the wiring board 13 and the control unit 50, and a locking portion 228 for locking the cutout 24 of the wiring board 13.
  • FIGS. 23A and 23B are top perspective views of the wiring board 13 of the light emitting unit 200 of the present embodiment and the lower case 220 on which the wiring board 13 is mounted, respectively.
  • the wiring board 13 is mounted on the bottom surface 224 of the lower case 220 such that the plurality of notches 24 provided on the wiring board 13 are locked by the plurality of locking portions 228 provided on the lower case 220. Is placed.
  • the wiring hole 26 of the wiring board 13 and the wiring hole 226 of the lower case 220 are configured to overlap at the same position. Therefore, the wiring from the wiring board 13 can be connected to the control unit 50 behind the lower case 220 through the wiring holes 26 and 226.
  • the bottom portion 224 of the lower case 220 is configured to cover the wiring board 13. Accordingly, the airflow 42 can be protected from directly hitting the wiring board 13, so that the light-emitting element 20 is heated by the heated airflow 42, and foreign matters and the like get on the Can be suppressed. Further, heat generated in the wiring board 13 can be efficiently dissipated through the bottom portion 224 of the lower case 220.
  • the lower case 220 may be waterproofed in order to prevent dew condensation or the like from occurring on the wiring board 13 or the light emitting element 20 due to moisture contained in the airflow 42.
  • the receiving portion 229 has a semi-circle having substantially the same outer diameter as the sealing portion or slightly larger than the outer diameter of the sealing portion so that a part of the side surface of the shell-shaped sealing portion of the light emitting element 20 abuts.
  • Part of the cylinder has a concave shape inclined at the same angle as the light emitting element 20.
  • the receiving portion 229 supports the light emitting element 20 from obliquely below, it is possible to prevent the light emitting element 20 from further tilting toward the center of the ring and shifting the optical axis.
  • the receiving portion 229 may be provided such that an arbitrary portion other than the sealing portion of the light emitting element 20 abuts.
  • the upper case 210 may be provided so as to contact at least a part of the plurality of light emitting elements 20.
  • the upper case 210 and the lower case 220 are preferably formed of a resin having high thermal conductivity.
  • the heat generated in the wiring board 13 and the light emitting element 20 can be efficiently radiated to the outside, so that a problem due to a rise in the temperature of the wiring board 13 and the light emitting element 20 can be suppressed.
  • the time required for the upper case 210, the lower case 220, the wiring board 13, and the light emitting element 20 to reach a thermal equilibrium state is reduced. Since the length can be increased, the light emitting element 20 can be maintained at its original life.
  • the upper case 210 or the lower case 220 may be formed of a resin having a higher thermal conductivity than an epoxy resin generally used for a sealing portion of a bullet-type LED, for example, acrylonitrile butadiene styrene ( (ABS) resin.
  • the upper case 210 or the lower case 220 has a thermal conductivity of 0.2 [W / m ⁇ K] or more, preferably 0.21 [W / m ⁇ K] or more, more preferably 0.22 [W / m]. K] or more, more preferably 0.25 [W / m ⁇ K] or more.
  • the resin for forming the upper case 210 and the lower case 220 As a resin for forming the upper case 210 and the lower case 220, the surface area and the volume of the upper case 210 and the lower case 220, the thermal conductivity of the resin, the specific heat of the resin, and the It is preferable to select a resin that can provide a necessary cooling effect according to the temperature, the rated temperature of the light emitting element 20 and the rated temperature of the wiring board 13, and the like.
  • the resin forming the upper case 210 or the lower case 220 may be a white resin.
  • a white resin it is possible to make it difficult for the lower case 220 to absorb the radiant heat of the heated airflow 42 sent from behind the lower case 220.
  • a mirror surface may be formed on the back surface of lower case 220. Thereby, the temperature rise of the wiring board 13 and the light emitting element 20 can be further suppressed.
  • FIGS. 24A and 24B are dimensional diagrams of the light emitting section 200 of the present embodiment.
  • FIGS. 25A and 25B are dimensional diagrams of the wiring board 13 of the present embodiment.
  • the dimensions shown in the figure are merely examples, and can be changed as appropriate according to the dimensions, applications, and the like of the light irradiation device 100.
  • FIG. 26 is a schematic sectional view of the light emitting element 20 arranged on the wiring board 13.
  • a bullet-shaped LED 91 is used as the light emitting element 20 is shown.
  • both electrode terminals of the anode 92 and the cathode 93 of the LED 91 are inserted into the through holes 90 of the wiring board 13.
  • a stopper 94 is provided on the anode 92 and the cathode 93. The stopper portion 94 is formed when the LED 91 is separated from the tie bar, is wider than the other portions of the anode 92 and the cathode 93, and is formed at a position common to the plurality of LEDs 91.
  • the height of the LED 91 is adjusted such that the stopper section 94 is located inside the through hole 90 of the wiring board 13 and soldered to the wiring board 13.
  • the plurality of light emitting elements 20 may be automatically arranged on the wiring board 13 using an inserter or the like.
  • the anode 92 and the cathode 93 are bent at the stopper section 94, and the optical axis of the LED 91 is inclined. Since the electrode terminal is bent at the wide stopper portion 94, the LED 91 can be tilted more easily. In addition, since the bent portion can be protected by the through hole 90, it is possible to suppress a shift in the optical axis due to a change in the inclination angle after the manufacture.
  • the stopper portion 94 may be formed thinner than other portions of the electrode terminal. Thereby, the stopper portion 94 can be further easily bent.
  • a method for manufacturing the light emitting unit 200 of this embodiment will be described.
  • a plurality of light emitting elements 20 are arranged on the wiring board 13 as described above, and the stopper 94 is adjusted so as to be located inside the through hole 90, and fixed by soldering, and the remaining electrode terminals are cut. I do.
  • the wiring board 13 is placed on the bottom surface 224 of the lower case 220, and the notch 24 is locked by the locking portion 228 to fix the wiring board 13 to the lower case 220.
  • the electrode terminals 23 of the respective light emitting elements 20 are bent at the stopper portions 94,
  • the light emitting element 20 is inclined at a predetermined inclination angle.
  • the receiving portion 229 in accordance with the inclination angles of the plurality of light emitting elements 20, the light emitting element 20 can be accurately inclined to a desired inclination angle only by pressing the light emitting element 20 against the receiving portion 229.
  • the light emitting elements 20 may be pressed against the receiving portion 229 one by one, but a pressing member for pressing the plurality of light emitting elements 20 against the receiving portion 229 simultaneously may be used.
  • the pressing member has a shape of a side surface of a truncated cone, the radius of the upper surface of the truncated cone is slightly smaller than a circumscribed circle circumscribing the sealing portions of the plurality of light emitting elements 20, and the radius of the bottom surface of the truncated cone is Slightly larger than the circumscribed circle.
  • FIG. 27 schematically shows a constituent member of still another embodiment of the light emitting section 200.
  • the light emitting section 200 includes an upper case 230, a wiring board 13, and a lower case 240 in order from the side closer to the irradiated portion.
  • the upper case 230 of the light emitting unit 200 according to the present embodiment also has the function of the above-described pressing member.
  • the wiring board 13 of the light emitting section 200 of this embodiment is the same as the wiring board 13 shown in FIG.
  • a vent 244 is provided in the lower case 220 of the light emitting unit 200 of this embodiment.
  • FIGS. 28A, 28B, and 28C are a top perspective view, a rear perspective view, and a plan view, respectively, of the upper case 230 of the light emitting unit 200 of the present embodiment.
  • the inside of the opening 212 on the upper surface of the upper case 230 is provided so as to be lower from the outer peripheral side toward the center side, similarly to the upper case 210 shown in FIG. Outside the opening 212 on the upper surface of the upper case 230, a frustoconical slope 232 and a bottom 234 lower than the inside of the opening 212 are provided.
  • a pressing portion 236 for pressing the side surfaces of the sealing portions of the plurality of light emitting elements 20 against the receiving portion of the lower case 240 from diagonally above the outside of the ring is formed on the back surface of the slope portion 232.
  • FIGS. 29A, 29B, and 29C are a top perspective view, a front view, and a rear perspective view, respectively, of the lower case 240 of the light emitting unit 200 of this embodiment.
  • the lower case 240 includes a bottom portion 224 on which the wiring board 13 is placed, and a cylindrical portion 242 that is inserted into an opening inside the wiring board 13 when the wiring board 13 is placed on the bottom portion 224. Is provided.
  • the cylindrical portion 242 is provided with a receiving portion 249 for receiving each of the plurality of light emitting elements 20 from obliquely below the center of the ring.
  • the lower case 240 of this embodiment has a larger semi-cylindrical concave surface of the receiving portion 249 because the outer diameter of the cylindrical portion 242 is larger than that of the lower case 220 shown in FIG. As a result, the contact area of the light emitting element 20 with the sealing portion becomes larger, so that the heat of the light emitting element 20 can be more efficiently transmitted to the lower case 240 and the light emitting element 20 is more strongly supported. Can be.
  • the vent may have any shape, and may be provided at any position of the lower case 240 or the upper case 230.
  • a gap may be provided between the lower case 240 and the upper case 230 to serve as a vent.
  • the bottom portion 224 is provided so as to cover the wiring board 13, and the direct air to the wiring board 13 from the rear is provided. Is shut off. Therefore, although the ventilation port 244 is provided in the cylindrical portion 242 of the lower case 240, the lower case 240 may be configured so as not to block the flow of air into the wiring board 13.
  • a slit or a lead for generating a sound by air flow may be provided in the opening 212 of the upper case 230 or the air outlet.
  • a chord that matches the operation sound of the motor 41 may be generated by configuring so that a sound having the same phase low frequency as the rotation frequency of the motor 41 of the blower unit 40 can be generated. Thereby, an unpleasant operation sound can be softened.
  • the configuration may be such that a sound having an opposite phase to the operation sound of the motor 41 can be generated. Thereby, the operation sound of the motor 41 can be muted or reduced.
  • the negative pressure generated around the air flow 42 is used to open the upper case 230 and the lower case 240 through the openings provided in the upper case 230 or the lower case 240. Air may be allowed to flow into the space between them.
  • a method for manufacturing the light emitting unit 200 of this embodiment will be described.
  • a plurality of light emitting elements 20 are arranged on the wiring board 13 as described above, and the stopper 94 is adjusted so as to be located inside the through hole 90, and fixed by soldering, and the remaining electrode terminals are cut. I do.
  • the wiring board 13 is placed and fixed on the bottom part 224 of the lower case 240.
  • the upper case 230 is covered from above.
  • the pressing portions 236 of the upper case 230 press the sealing portions of the plurality of light emitting elements 20 from obliquely outside the ring to the receiving portions 249 of the lower case 240, the electrode terminals 23 of the plurality of light emitting elements 20 are pressed.
  • the light emitting unit 200 in which the plurality of light emitting elements 20 are inclined at the predetermined inclination angle can be easily manufactured simply by covering the upper case 230 and fixing the lower case 240. can do.
  • the light irradiation device of the present embodiment can be used for other purposes.
  • a light irradiation device can be used to irradiate the affected area with light for the purpose of relieving pain.
  • an LED that outputs light having a wavelength of 790 to 904 nm may be used.
  • the light irradiation device is configured so that the light irradiated to the affected part has the above-mentioned predetermined wavelength and irradiation energy.
  • a light irradiation device can be used as an ultraviolet treatment device for treating vitiligo and psoriasis.
  • an LED that outputs light having a wavelength near 308 nm may be used.
  • the light irradiation device is configured so that the light irradiated to the affected part has the above-mentioned predetermined wavelength and irradiation energy.
  • the light emitting device 20 Irradiation may be performed on the irradiated portion while changing the intensity of the irradiated light within a predetermined range. Irradiation while changing the light intensity can continue to give new stimuli to the irradiated area, and it is expected that higher effects will be obtained than when irradiating light with a constant intensity continuously Is done.
  • the airflow of the air flow sent from the blower unit 40 may be sent to the irradiated portion while being changed within a predetermined range. For example, the air flow may be sent out at an air volume that causes 1 / f fluctuation. This is expected to provide a higher relaxation effect.
  • the present invention includes the following aspects.
  • [Aspect 1] Comprising a substrate on which the light emitting element is arranged, The light emitting device according to claim 1, wherein the light emitting element is disposed such that a stopper portion of the electrode terminal is located inside a through hole of the substrate.
  • [Aspect 2] The electrode terminal of the light emitting element is bent at the stopper portion, The light irradiation device according to aspect 1, wherein the light emitting element is disposed so that an optical axis is inclined from a direction perpendicular to a surface on which the substrate is disposed.
  • a direction perpendicular to the surface on which the substrate is disposed is referred to as a vertical direction, and a side on which the plurality of light emitting elements are disposed is referred to as an upper side, further including a lower case provided below the substrate.
  • Each of the plurality of light emitting elements is disposed such that an optical axis is inclined from the vertical direction,
  • the light irradiation device according to aspect 1 or 2 wherein the lower case has a receiving portion for supporting each of the plurality of light emitting elements disposed on the substrate from obliquely below.
  • Each of the plurality of light emitting elements is arranged such that the optical axis is inclined inside a polygon having the positions of the plurality of light emitting elements as vertices,
  • the light irradiation device according to aspect 3 wherein the receiving portion is provided so as to support the light emitting element from obliquely below the inside of the polygon.
  • the receiving portion has a concave surface facing obliquely upward,
  • the light irradiation device according to aspect 4 wherein a side surface of the light emitting element is configured to contact the concave surface of the receiving portion.
  • a method for manufacturing a light irradiation device comprising: Inserting the electrode terminal of the light emitting element into a through hole of the substrate; Adjusting the height of the light emitting element so that the stopper portion of the electrode terminal is located inside the through hole; Bending the electrode of the light emitting element at the stopper portion to incline the optical axis of the light emitting element from a direction perpendicular to the arrangement surface of the substrate;
  • a method comprising: [Aspect 8] Tilting the light emitting element, When the direction perpendicular to the surface on which the substrate is disposed is referred to as an up-down direction, and the side on which the light-emitting elements are disposed is referred to as an upper side, the substrate receives the light-emitting elements disposed on the substrate from obliquely below.
  • the present invention is applicable to a light irradiation device for irradiating a light to an irradiated part of a human body.

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CN111840808B (zh) * 2019-04-26 2022-09-16 复旦大学 一种促进毛发生长的方法及装置
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JP2020024898A (ja) 2020-02-13
JP6488056B1 (ja) 2019-03-20
JP6619528B1 (ja) 2019-12-11
KR20200058492A (ko) 2020-05-27
TWI686224B (zh) 2020-03-01
JP2020022718A (ja) 2020-02-13
TW202007418A (zh) 2020-02-16
JP2020036941A (ja) 2020-03-12
CN111246913B (zh) 2021-10-26
KR102465910B1 (ko) 2022-11-18

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