JP3227030U - Light irradiator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a light irradiator capable of suppressing heating of a light irradiating part pressed against skin by light from a light source. A light irradiator (10) is provided with a head (13) having a light irradiating port (16) and a ventilation hole (31) in a back wall and a side wall (15), and a case (11) having a handle (12), and cooling air. Reflection in which a blower fan 22 for generating, an LED substrate 27 as a light source provided on the heat radiation fins 24 to which cooling air is blown, and a reflection plate 35 for reflecting the light emitted from the light source toward the front of the head portion are incorporated. The plate guide 33 is provided, and the reflector guide is provided with a cold air guide window 38 that exposes the outer surface of the reflector and guides cooling air to the outer surface of the reflector. [Selection diagram] Fig. 5

Description

The present invention relates to a light irradiator that irradiates a skin surface with light using a light emitting diode or the like as a light source.

In the epilator of the type that irradiates light on the haired skin, by heating the hair papilla by irradiating the skin with light, it is difficult for nutrients to reach the hair matrix cells and the generation of hair is suppressed. ing. Patent Document 1 describes a photoepilation device that is a type that irradiates the skin with light and prevents light leakage from the light irradiation port to the outside. As a light source of this photoepilation device, a laser is used. Diodes and flash lamps are used.

FIG. 5 of Patent Document 2 describes a hair removal device provided with a hair detection device that detects the position of hair. In this hair removal device, a light source is provided at the position of hair detected by the hair detection device. From 650 nm to 1200 nm.

Patent Document 3 discloses an irradiation device that includes a handle portion and a head portion and that is intended for hair removal and skin activation. The head unit is provided with a lamp unit including a light source lamp that emits laser light, and the lamp unit is provided with quartz glass that cuts a specific wavelength.

JP, 2008-289819, A JP, 2007-533391, A JP, 2008-113984, A

A hair remover that irradiates the skin with light to remove hair or remove hair, and a light irradiator that activates the skin is a case that constitutes the main body of the device, and a laser diode, lamp, etc. housed in the case. And a light source. The light irradiation unit provided in the case is pressed against the skin, and the light of the light source is applied to the skin through the irradiation window, that is, the irradiation opening provided in the light irradiation unit.

When the intensity of light is increased in order to increase the irradiation efficiency, the temperature of a light source such as a laser diode rises. When the temperature of the light source becomes high, not only the temperature of the light irradiation part of the case rises and the skin is excessively heated, but also the durability of the light source deteriorates. When the radiation fin is attached to the light source and the fan is provided in the case, the cooling air that flows in from the outside of the case and flows in the case is generated by the fan, and the cooling air is blown to the radiation fin. By cooling the radiating fins, it is possible to prevent the light source from reaching an excessively high temperature.

The light source is covered with a protective glass so that the light source is not directly exposed to the outside. In order to efficiently irradiate the skin with the light transmitted through the protective glass through the irradiation window, it has been attempted to provide a reflection plate on the inner surface of the light irradiation part, but the reflection plate generates heat due to the transmitted light, There is a problem that the temperature of the light irradiation part is raised by the reflector.

An object of the present invention is to provide a light irradiator that suppresses heating of a light irradiating section pressed against the skin by light from a light source.

The light irradiator of the present invention is a case including a head portion provided with a light irradiation opening on a front wall and ventilation holes provided on a back wall and a side wall, and a handle portion provided with the head portion at a tip end thereof, A blower fan that is arranged on the back side in the head portion to generate cooling air, a light source provided on a heat radiation fin to which the cooling air is blown, and light emitted from the light source are directed to the front of the head portion. And a reflector guide that is installed in the light irradiation port and is provided in the reflector guide, and exposes the outer surface of the reflector to guide cooling air to the outer surface of the reflector. A cold air guide window.

Cooling air generated by a blower fan is blown to the light source provided in the head portion of the light irradiator to cool the light source. A reflection plate that reflects the light emitted from the light source and directs the light to the front of the head is mounted on the reflection plate guide, and a cold air guide window for guiding the cooling air generated by the blower fan to the reflection plate guide. Is provided, it is possible to reliably cool the reflection plate at a position away from the light source. As a result, it is possible to prevent the front portion of the head cover, which serves as the light irradiation unit pressed against the skin, from being heated by the light from the light source.

It is a perspective view showing the front of a light irradiation machine which is one embodiment. It is a perspective view which shows the side surface of a light irradiation device. It is a front view of a light irradiator. It is a rear view of a light irradiator. It is an exploded perspective view of a light irradiator. FIG. 6 is a perspective view showing a protective glass, a reflector and a reflector holder shown in FIG. 5. 6A is a front view of FIG. 6, FIG. 6B is a sectional view taken along line 7B-7B in FIG. 6, and FIG. 7C is a sectional view taken along line 7C-7C in FIG. It is sectional drawing which shows the assembly state of a reflector holder and a radiation fin.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. The light irradiator 10 has a case 11 made of resin. As shown in FIG. 5, the case 11 includes a front case piece 11a, a rear case piece 11b, and a head cover 11c. The front-side case piece 11a and the rear-side case piece 11b are butted and connected to each other, and the head cover 11c is attached to the front end portions of the front-side case piece 11a and the rear-side case piece 11b to assemble the case 11. 1 to 4 show the case 11 in an assembled state.

The case 11 includes a handle portion 12 gripped by a user and a head portion 13 provided at a tip portion of the handle portion 12, and the head portion 13 is a tip portion of a back wall forming a back side case piece 11b. And the head cover 11c. In this specification, the case 11 has a front surface on the side provided with the head cover 11c and a back surface on the opposite side. The head cover 11c has an octagonal front wall 14 and eight side walls 15 connected to the front wall 14, and the side wall 15 has an octagonal pyramid shape whose width gradually increases from the front to the back.

As shown in FIG. 5, a light irradiation port 16 is provided on the front wall 14 of the head cover 11c, and a part of the rear wall forming the rear case piece 11b is located at a portion facing the light irradiation port 16. Vent holes 17 are provided. The ventilation hole 17 is formed of a large number of through holes and serves as an exhaust ventilation hole. The front wall 14 of the head cover 11c functions as a light irradiation unit, and by pressing the front wall 14 against the skin, the light emitted from the light irradiation port 16 is applied to the skin, and hair removal and skin activation can be achieved. .. The front wall 14 is provided with a roller 19 that comes into contact with the skin when the front wall 14 as a light irradiation unit is pressed against the skin.

A light irradiation unit 21 is attached to the accommodation chamber 18 formed in the head portion 13. The light irradiation unit 21 has a blower fan 22, and the blower fan 22 is located in the head portion 13 so as to be located on the rear case piece 11b side and generates cooling wind in the accommodation chamber 18. A blower guide 23 that accommodates a blower fan 22 is provided on the inner surface of the head portion 13 of the rear case piece 11b.

The light irradiation unit 21 has a radiation fin 24 made of a material having a good thermal conductivity such as an aluminum alloy. The radiating fin 24 has four tapered side wall portions 25 having a width gradually decreasing from the bottom side to the top side and a long sided top wall portion 26, and has a truncated pyramid shape. A rectangular LED board 27 is provided as a light source on the outer surface of the top wall portion 26 of the heat dissipation fin 24, and the heat dissipation fin 24 serves as a support for supporting the LED board 27. The LED board 27 is provided with a plurality of LED elements (not shown), and in order to protect the LED elements, a transparent protective glass 28 made of quartz glass or the like is attached to the surface of the LED board 27.

As the LED element, for example, an element that emits a laser beam having a wavelength of 650 nm to 1200 nm can be used. Furthermore, a plurality of types of LED elements that emit laser beams of different wavelengths may be provided on the LED substrate 27.

Of the eight side walls 15 of the head cover 11c, a vent hole 31 is provided in the side wall portion on the tip end side, and a vent hole 32 is provided in the side wall portion on the base end side. Each of the ventilation holes 31 and 32 is formed of a large number of through holes, and serves as a ventilation hole for intake. Therefore, when the blower fan 22 is driven by a motor (not shown), outside air flows into the housing chamber 18 through the ventilation holes 31 and 32 and flows out from the ventilation hole 17 to the outside. As a result, cooling air is generated in the storage chamber 18. The cooling air flows in from the vent holes 31 on the front end side and the vent holes 32 on the base end side, hits the heat radiation fins 24 to cool the heat radiation fins 24, and the LED substrate 27 is cooled.

A reflector guide 33 is attached to the light irradiation port 16 of the head cover 11c. As shown in FIGS. 6 to 8, the reflector guide 33 is formed of a rectangular frame member, and a long side frame piece extends along the longitudinal direction of the case 11. The reflector guide 33 has a base portion 33a attached to the light irradiation port 16 and a surface frame portion 33b. The front surface frame portion 33b is displaced inward of the base portion 32a by the size of the step portion 34, and projects forward from the base portion 33a.

On the inner surface of the base 33a of the reflector guide 33, as shown by the broken line in FIG. 7A, a quadrangular prismatic reflector 35 is incorporated. The reflector 35 is made of metal and is fixed to a mounting surface 36 provided on the inner surface of the reflector guide 33. The front end surface of the reflection plate 35 is in contact with the contact surface 37 provided on the surface frame portion 33b, and the rear end surface of the reflection plate 35 is in contact with the protective glass 28. The reflector 35 reflects the light emitted from the LED, which is the light source, toward the front of the head cover 11c. Thereby, the amount of light emitted toward the skin surface in front of the head cover 11c can be increased.

As shown in FIGS. 6 and 7, a cold air guide window 38 is provided in the base portion 33 a of the reflector guide 33. Three cold air guide windows 38 are provided on the long side of the base 33 a and two cold air guide windows 38 are provided on the short side thereof, and the outer surface of the reflector 35 is partially exposed to the outside by the cold air guide window 38. Therefore, the outside air that has flowed in through the inflow vents 31 and 32 is first abutted against the short side of the reflector guide 33 and blown onto the reflector 35. Next, the outside air wraps around the long side of the reflector guide 33 and is blown onto the reflector 35 while flowing along the long side. In this way, the outside air after cooling the reflection plate 35 is directed to the radiating fins 24 and passes through the slits 24 a provided in the radiating fins 24. The outside air that has passed is discharged from the ventilation hole 17 to the outside by the blower fan 22.

The metal reflection plate 35 is heated by the light emitted from the LED, which is a light source, to raise the temperature, but the reflection plate guide 33 that supports the reflection plate 35 is provided with a cold air guide window 38, so that the cold air is cooled. Since the reflection plate 35 is partially exposed to the outside through the guide window 38, the cold air for blowing the cool air to the heat radiation fins 24 for cooling the LED board 27 is guided to the reflection plate 35 and reflected. The plate 35 can also be cooled. Moreover, the cooling air that has flowed in from the inflow holes 31 and 32 is first blown to the reflection plate 35, so that the reflection plate 35 is cooled before cooling the heat radiation fins 24, and the cooling efficiency of the reflection plate 35 is increased. be able to.

A power cable (not shown) is attached to the handle portion 12, and the LED element is turned on and the blower fan 22 is rotationally driven by the electric power supplied from the outside. A control board (not shown) is attached to the handle portion 12 to supply power to the LED element and the blower fan 22. A switch plate 39 is provided on the front case piece 11a, and the light irradiator 10 is turned on/off by operating the switch plate 39.

The head cover 11c has an octagonal pyramid shape with eight side walls 15. The two side walls 15 on the front end side are provided with the ventilation holes 31, and the two side wall surfaces on the base end side are provided with the ventilation holes 32. Therefore, the outside air that has flowed in through the ventilation holes 31 and 32 collides with the inner surfaces of the other four side wall surfaces, is directed to the side wall portion 25 of the heat radiation fin 24, and the heat radiation effect is enhanced.

The reflecting plate guide 33 can be square, and the reflecting plate 35 can also be formed into a regular square prismatic tube shape correspondingly. However, by making each of them rectangular, the reflecting plate guide 33 The flow distance along the long side becomes longer, and the cooling efficiency of the reflection plate 35 is improved.

When the cooling effect of the reflection plate 35 is enhanced, the skin surface can be continuously irradiated with light, and the irradiation operation can be smoothly performed.

The present invention is not limited to the above-mentioned embodiment, and various modifications can be made without departing from the scope of the invention. As the power source, not only the LED element but also a lamp or the like may be used.

10 Light Irradiator 11 Case 11a Front Side Case Piece 11b Back Side Case Piece 11c Head Cover 12 Handle Section 13 Head Section 14 Front Wall 15 Side Wall 16 Light Irradiation Port 17 Vent 18 Storage Room 21 Light Irradiation Unit 22 Blower Fan 23 Blower Guide ,
24 Heat Dissipation Fin 24a Slit 25 Side Wall 26 Top Wall 27 LED Board 28 Protective Glass 31 Vent 32 Vent 32a Base 33 Reflector Guide 33a Base 33b Surface Frame 34 Step 35 Reflector 36 Mounting Surface 37 Contact Surface 38 Cold Air Information window

Claims (4)

A head portion provided with a light irradiation opening on the front wall and ventilation holes provided on the back wall and the side wall; and a case having a handle portion provided with the head portion at the tip,
A blower fan that is disposed in the head portion so as to be positioned on the back side and generates cooling air,
A light source provided on a radiation fin to which cooling air is blown,
A reflector plate that reflects the light emitted from the light source toward the front of the head portion is incorporated, and a reflector plate guide that is attached to the light irradiation port,
A cool air guide window that is provided in the reflector guide and exposes the outer surface of the reflector to guide cooling air to the outer surface of the reflector. The light irradiator according to claim 1,
The reflector is a rectangular prismatic shape, the reflector guide is formed by a rectangular frame member, the mounting surface to which the reflector is fixed is formed on the inner surface of the reflector guide, the cold air guide window Light illuminators provided on each of the four sides. The light irradiator according to claim 1 or 2,
The front wall is an octagon, the side wall is an octagonal pyramid whose width gradually increases from the front wall to the back wall, and the outside air flows in from a vent hole provided in the back wall, A light irradiator that cools the radiating fins after the outside air flows out from the vent holes provided in the back wall and the cooling air generated in the head portion cools the reflection plate. The light irradiator according to claim 3,
The reflector guide is a rectangle whose long sides extend along the longitudinal direction of the case, and the ventilation holes through which the outside air flows are provided on the front end side and the base end side of the side wall, and the cooling air flowing from the outside is provided. Is a light irradiator that is blown onto the frame piece on the short side of the reflector guide and then flows along the frame piece on the long side of the reflector guide.

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