JP7386931B2 - light irradiation device - Google Patents

Description

The present invention relates to a light irradiation device such as a dryer that dries hair using infrared rays, a phototherapy device that irradiates an affected area with light, and a photodryer that irradiates light onto an object to be dried to promote drying.

This type of light irradiation device is disclosed in Patent Document 1, for example. Patent Document 1 is a dryer that includes a fan (blow fan), a heat-ray light source (luminous body), and a reflector (reflector) that covers the periphery of the heat-ray light source, inside a cylindrical main body (main body case). , a filter (optical filter) that closes the aperture surface of the reflector. Thermal light sources include halogen lamps, incandescent lamps, xenon lamps, metal halide lamps, and the like. By providing a filter on the opening surface of the reflector, it is possible to block most of the visible light of the light (electromagnetic waves) irradiated from the heat ray light source and allow the infrared light that heats the hair to pass through.

International Publication No. 2016/072031

An object of the present invention is to provide a light irradiation device that can prevent the radial dimension of a reflector from increasing.

The present invention is a light irradiation device that includes a light emitter 28 and a reflector 29 that reflects and guides the light emitted from the light emitter 28 toward an irradiation target. An irradiation opening is provided at the front of the reflector 29. The reflector 29 includes a first reflective surface 39 that reflects and guides the light emitted from the light emitter 28 forward toward the irradiation aperture, and is arranged adjacent to the first reflective surface 39 to reflect the light emitted from the light emitter 28. A second reflective surface 40 that reflects and guides backwards is arranged adjacent to the second reflective surface 40 to direct the light emitted from the light emitter 28 and the light reflected and guided by the second reflective surface 40 toward the irradiation aperture. A third reflective surface 43 is provided for forward reflective guidance. The light emitting part 36 of the light emitter 28 is made to face the adjacent portion of the second reflective surface 40 and the third reflective surface 43.

The longitudinal dimension of the reflector 29 including the first reflective surface 39 , the second reflective surface 40 , and the third reflective surface 43 is set larger than the radial dimension of the reflector 29 .

The reflector 29 is constructed by joining a front reflector 37 and a rear reflector 38. A front engagement part 51 and a rear engagement part 54 are formed on the joint surfaces of the front reflector 37 and the rear reflector 38, which engage each other in a concave and convex manner to restrict the displacement movement of the joined partners.

A screw 56 inserted through either the front engaging part 51 or the rear engaging part 54 is screwed into a screw boss 55 provided on the other, thereby fixing the front reflector 37 and the rear reflector 38 inseparably.

The light irradiation device of the present invention efficiently reflects and guides the light emitted from the light emitting body 28 and reaches each of the reflecting surfaces 39 , 40 , 43 from the irradiation opening of the reflector 29 . It can be irradiated. In addition, since the light emitting part 36 of the light emitter 28 is exposed to the adjacent portion of the second reflecting surface 40 and the third reflecting surface 43, the radial dimension of the reflector 29 is prevented from increasing, thereby realizing compactness. can.

The reflector 29 can have an elongated cylindrical structure that is suitable for using the light emitting body 28 that is long in the front and back, and the light irradiation device can be made more compact as the radial dimension of the reflector 29 is smaller.

By engaging the front engaging portion 51 and the rear engaging portion 54 with each other, the front reflector 37 and the rear reflector 38 can be properly assembled with the mating members prevented from shifting and positioned.

Although the fastening structure is simpler, the front reflector 37 and the rear reflector 38 can be firmly fastened and fixed using the screws 56. Therefore, the optical characteristics of the reflective surfaces 39, 40, and 43 provided on the reflector 29 can always be kept constant.

1 is a longitudinal sectional side view of a main part of a light irradiation device according to Example 1 of the present invention. FIG. 2 is a longitudinal cross-sectional side view of the light irradiation device according to Example 1. 1 is a vertical side view showing a light emitting structure of a light irradiation device according to Example 1. FIG. 1 is a cross-sectional plan view showing a light emitting structure of a light irradiation device according to Example 1. FIG. FIG. 2 is an exploded side view showing the case structure of the light irradiation device according to the first embodiment. 1 is an exploded perspective view showing a case structure of a light irradiation device according to Example 1. FIG. FIG. 2 is an exploded perspective view showing a reflector of the light irradiation device according to the first embodiment. 1 is an exploded cross-sectional view showing a light emitting structure of a light irradiation device according to Example 1. FIG. FIG. 4 is a cross-sectional view taken along line AA in FIG. 3. 4 is a sectional view taken along line CC in FIG. 3. FIG. 4 is a sectional view taken along line BB in FIG. 3. FIG. FIG. 7 is a longitudinal side view showing a filter support structure of a light irradiation device according to a second embodiment. FIG. 7 is a vertical cross-sectional side view showing a filter support structure of a light irradiation device according to Example 3; FIG. 7 is a longitudinal side view showing a filter support structure of a light irradiation device according to a fourth embodiment. FIG. 7 is a longitudinal side view showing a filter support structure of a light irradiation device according to a fifth embodiment. FIG. 7 is a vertical cross-sectional side view showing a negative pressure forming structure of a light irradiation device according to Example 6. FIG. 7 is a longitudinal side view showing a negative pressure forming structure of a light irradiation device according to Example 7; FIG. 7 is a longitudinal side view showing a reflector of a light irradiation device according to Example 8.

(Example 1) FIGS. 1 to 11 show Example 1 of a hair dryer as a light irradiation device according to the present invention. In this embodiment, front and rear, left and right, and top and bottom correspond to the cross arrows shown in FIGS. 2 and 6, and the indications of front and back, left and right, and top and bottom written near each arrow. In FIGS. 2 and 3, the hair dryer has an axial-flow type blower fan 3 rotated by a fan motor 2, a heat source unit 4 serving as a heating source, etc. inside a hollow cylindrical body case 1 that is long in the front and back. Contains and consists of. The main body case 1 includes a wind guide tube 7 formed by joining a pair of left and right half halves 7a and 7b, and an exterior tube 8 into which the wind guide tube 7 is fitted. The inner surface of the wind guide tube 7 is an air guide path 9 for dry air sent from the blower fan 3. An air suction port 10 is provided at the rear end of the air guide path 9, and an air intake port 10 is provided at the front end of the air guide tube 7. An outlet 11 is provided. The air outlet 11 is surrounded by an air outlet case 5 and an auxiliary air outlet case 6, and both of the integrated cases 5 and 6 are bayonet engaged with the front outer surface of the wind guide tube 7. A grip 12 is integrally formed on the rear lower surface of the wind guide tube 7, and a main switch 13, a light-off switch 14, a transformer 15, etc. are arranged inside the grip 12. Reference numeral 16 is a slide knob for switching the main switch 13, and 17 is a push button for switching the light-off switch 14. In FIG. 3, the symbol P indicates the central axis of the hair dryer. As described above, in the first embodiment, the inside of the wind guide tube 7 is the air guide path 9, but if the wind guide tube 7 is not provided, the inside of the exterior tube 8 is the air guide path 9. . Furthermore, a mica or metal cylinder for heat insulation may be provided on the inner surface of the wind guide tube 7 or the inner surface of the exterior tube 8.

The blower fan 3 is arranged in the rear half of the main body case 1, and pressurizes the air sucked in from the suction port 10 and sends it toward the blower port 11. A fan motor 2 is fixed to a holder part 21 of a fan case 20 fixed to the wind guide tube 7, and a plurality of rectifying blades 26 are formed between the fan case 20 and the holder part 21. A control board 22 that controls the driving state of the fan motor 2, a halogen lamp (light emitter) 28 (described later), and the ion emitting structure is fixed to the front surface of the holder part 21. When the main switch 13 is switched from the OFF position to the weak operation position, the control section turns on the halogen lamp 28 at low brightness and drives the blower fan 3 at low speed. When the main switch 13 is switched from the weak operating position to the strong operating position, the control section turns on the halogen lamp 28 in a high brightness state and drives the blower fan 3 at high speed. The ion emitting structure operates in both the weak operating position and the strong operating position to emit negative ions. When the light-off switch 14 is turned on while the halogen lamp 28 is on, the control section temporarily turns off the halogen lamp 28.

The outer surface of the suction port 10 is covered with a first grill 23 made of punched metal and a second grill 24 in the shape of multiple rings. Further, the inner surface of the air outlet 11 is covered with a third grill 25. The second grill 24 and the third grill 25 are sandwiched and fixed between the half bodies 7a and 7b, and the first grill 23 is detachably attached to the rear part of the wind guide tube 7. The air outlet 11 is surrounded by an air outlet case 5 fixed to the front end of the exterior cylinder 8, and includes a drying air outlet and an irradiation port that irradiates infrared rays (heat rays) emitted from a halogen lamp 28 toward the user's hair. It also serves as The air outlet 11 is constructed by integrating an air outlet case 5 made of polycarbonate and an auxiliary air outlet case 6 made of highly heat-resistant PPS resin. The blow-off case 5 is integrated with the wind guide tube 7 by bayonetly engaging with the engagement wall 7c on the front outer surface of the blow-off case 7, and further fastening the lower end of the blow-off case 5 with a screw 19 screwed from the exterior tube 8. The auxiliary blow-off case 6 has an opening 96 that allows the drying air to pass through, and an ion port 97 that allows some of the drying air and negative ions to pass through.

In FIG. 4, the heat source unit 4 is composed of one unit component including a halogen lamp (light emitter) 28, a reflector 29, and a filter 30. The halogen lamp 28 includes a light emitting part (filament) 36, a front and rear long bulb 31 filled with inert gas, halogen gas, etc., and a housing 32. By inserting the plug 33 of the housing 32 into the socket 34, It is fixedly supported by a socket 34. The socket 34 is fastened and fixed to a light source stand 45, which will be described later. When the halogen lamp 28 is turned on, visible light and infrared light are emitted from the light emitting section 36 of the bulb 31.

The reflector 29 is constructed by joining a front reflector 37 and a rear reflector 38. The front reflector 37 is constructed by joining a pair of left and right halves 37a and 37b (see FIG. 7). The half bodies 37a and 37b are made of press-molded metal such as aluminum, and have reflective surfaces formed on their inner surfaces. The reflective surface can be formed by polishing, mirror finishing, etc., and may be formed by plating if necessary. On the inner surface of the front reflector 37, there is a first reflective surface 39 that reflects and guides the light emitted from the halogen lamp 28 forward toward the filter 30, and a third reflective surface 43 that directs the light emitted from the halogen lamp 28 toward the filter 30. A second reflective surface 40 for reflecting and guiding backward is provided, and the second reflective surface 40 is formed adjacent to the first reflective surface 39 . A filter seat 41 is formed on the inner surface of the front end of the half bodies 37a, 37b, and two second vent holes 42 are formed on the rear peripheral surface of the filter seat 41. The second ventilation port 42 is formed as a slit-shaped opening over the entire circumference in the wall surface near the front end of the front reflector 37 when the half bodies 37a and 37b are joined. The front reflector 37 may be composed of one reflecting tube, and in that case, it can be composed of a die-cast molded product made of metal such as aluminum.

The rear reflector 38 is a die-cast molded product made of a metal such as aluminum, and directs the light emitted from the halogen lamp 28 onto the front surface and the light reflected and guided by the second reflective surface 40 toward the filter 30. A concave mirror-shaped third reflecting surface 43 for forward reflection guidance is provided, and a reflecting surface is formed on the inner surface of the third reflecting surface 43. The reflective surface can be formed by polishing, mirror finishing, etc., and may be formed by plating if necessary. A light source support structure that supports the halogen lamp 28 is provided on the rear side of the third reflective surface 43 . The light source support structure includes a light source stand 45 consisting of four bosses that support the halogen lamp 28, and a hexagonal cylindrical air guide wall 46 surrounding the light source stand 45, and includes the socket 34 described above. is fastened and fixed to each light source stand 45 with four screws 47 together with the wiring board 49. A first vent hole 48 is formed in the center of the third reflective surface 43 to introduce dry air into the reflector 38 . The wiring board 49 is provided to collectively distribute the lead wires that supply power to the halogen lamp 28 and the lead wires that supply power to the fan motor 2. A light source cooling passage is formed between the air guide wall 46 and the halogen lamp 28 and communicates with the first vent 48 . The wiring board 49 fixed to the light source stand 45 also serves as a light shielding plate for preventing the light leaking from the first vent 48 from being irradiated to the suction port 10 side.

The first reflective surface 39, the second reflective surface 40, and the third reflective surface 43 are each configured as follows. The first reflecting surface 39 is formed of an elliptical curved surface. Further, the second reflective surface 40 is formed as an arcuate surface centered on the light emitting portion 36 of the halogen lamp 28. Further, the third reflective surface 43 is formed of an elliptical curved surface or a parabolic curved surface. According to such a reflector 29, since the second reflective surface 40 is formed as a circular arc surface centered on the light emitting part 36 of the halogen lamp 28, the irradiation from the halogen lamp 28 is reflected by the second reflective surface 40. The trajectory of the light toward the third reflective surface 43 and the trajectory of the light directly irradiated from the halogen lamp 28 toward the third reflective surface 43 match. The light that is reflected and guided by the first reflective surface 39 and directed toward the filter 30 and the light that is reflected and guided by the third reflective surface 43 and directed toward the filter 30 are condensed outside the main body case 1 30 cm in front of the light emitting section 36. It looks like this.

As described above, according to the reflector 29 including the three reflective surfaces 39, 40, and 43, the light emitted from the light emitter 28 and reaching each of the reflective surfaces 39, 40, and 43 is transferred to each of the reflective surfaces 39, 40, and 43. 40 and 43, the light can be reflected and guided efficiently and irradiated toward the filter 30. Further, since the axial center of the light emitting part (filament) 36 of the light emitting body 28, which is long in the front and back, faces the adjacent portion of the second reflecting surface 40 and the third reflecting surface 43, the radial dimension of the reflector 29 is adjusted. The light emitted from the light emitting body 28 can be irradiated toward the filter 30 while preventing the size from increasing and realizing compactness. This is because if the light irradiated from the light emitter 28 is reflected and guided by, for example, only one reflecting surface, the diameter of the irradiation aperture of the reflector 29 becomes large, and the reflector 29 is correspondingly large. This is because it becomes. The light emitting section 36 does not need to be positioned such that its light emitting center coincides with the adjacent portion of the second reflecting surface 40 and the third reflecting surface 43, and a portion of the emitting section 36 that is long in the axial direction is located at the second reflecting surface 40. It is sufficient that the adjacent portions of the reflective surface 40 and the third reflective surface 43 overlap. Furthermore, since the front-rear dimension of the reflector 29 including the first reflective surface 39, the second reflective surface 40, and the third reflective surface 43 is set larger than the radial dimension of the reflector 29, the light emitting body 28 which is long in the front-rear direction can be used. The reflector 29 can have an elongated cylindrical structure suitable for use, and the dryer can be made more compact due to the smaller radial dimension of the reflector 29.

According to the above-described light source support structure, the light source cooling passage between the air guide wall 46 and the light emitter 28 is communicated with the first vent 48, so that the drying air introduced from the rear end opening of the air guide wall 46 is The interior of the reflector 29 can be ventilated by flowing into the interior of the reflector 29 through the first ventilation port 48 . Also, at this time, by bringing the drying air flowing into the interior of the reflector 29 from the first vent 48 into contact with the light emitting body 28 and the reflector 29, the light emitting body 28 and the reflector 29 are effectively cooled. The temperature rise of the light emitter 28 and the reflector 29 can be suppressed. Further, by loosening the screws 47 and removing the socket 34 from the light source stand 45, the light emitter 28 and the socket 34 can be separated from the reflector 29. Moreover, since the light emitting body 28 can be separated from the socket 34 by removing the plug 33 from the socket 34, replacement work can be easily performed when the light emitting body 28 breaks down.

The front reflector 37 and the rear reflector 38 are joined and fastened in a state where the second reflecting surface 40 and the third reflecting surface 43 are adjacent to each other. In order to fasten and fix both reflectors 37 and 38, a front engagement part (protrusion) 51 is formed in a bent state and protrudes in the radial direction on the rear edge 57 of the half bodies 37a and 37b. Furthermore, a joint groove 52 that fits and supports the rear edge 57 of the front reflector 37 and a joint wall 53 that supports the peripheral surface of the rear edge 57 of the front reflector 37 are formed at the front end of the rear reflector 38. A concave rear engaging portion 54 and a screw boss 55 are formed at two opposing locations on the wall 53 by cutting out the joining wall 53. The front reflector 37 and the rear reflector 38 can be joined by joining the pair of half bodies 37a and 37b and engaging the front engaging part 51 and the rear engaging part 54 in a concave and convex manner. Further, by screwing the screw 56 inserted into the through hole 51a of the front engaging portion 51 into the screw boss 55, the front reflector 37 and the rear reflector 38 can be integrated. When the halogen lamp 28 is assembled to the reflector 29, the center of the filament of the halogen lamp 28 faces the adjacent portion of the second reflective surface 40 and the third reflective surface 43 (see FIG. 4). As described above, the front reflector 37 and the rear reflector 38 are prevented from shifting in the radial direction by the engagement between the rear edge 57 of the front reflector 37 and the joining groove 52, and furthermore, the front reflector 37 and the rear reflector 38 are prevented from shifting in the radial direction. The engagement of the engaging portion 54 prevents rotation about the central axis P.

The filter 30 is made of low-expansion glass and is fixed to the front end of the front reflector 37 by a filter support structure 59. The filter support structure 59 includes a filter seat 41 formed on the front reflector 37 and a presser ring 60 that cooperates with the filter seat 41 to clamp and fix the filter 30 in the front and rear. The holding ring 60 includes an end wall 61 that presses and holds the front peripheral edge of the filter 30, and a ring-shaped circumferential wall 62 that fits onto the outer circumferential surface of the filter seat 41. It functions as a dazzling body 75. As shown in FIG. 4, the retaining ring 60 is fixed to the front reflector 37 with screws 63. The filter seat 41 is in close contact with the peripheral surface and rear peripheral edge of the filter 30. Thereby, the heat of the filter 30 can be effectively conducted to the front reflector 37 side, and cooling of the filter 30 can be promoted.

As described above, the filter support structure 59 includes the filter seat 41 formed on the front reflector 37 and the holding ring 60 that clamps and fixes the filter 30 in cooperation with the filter seat 41. According to such a filter support structure 59, the filter 30 can be easily assembled to the front reflector 37 by assembling the filter 30 to the filter seat 41 and fitting and fixing the retaining ring 60 to the front peripheral surface of the front reflector 37. It can be firmly fixed so that it cannot be separated.

The halogen lamp 28 is sensitive to impact, and the filament will be damaged or deformed if a large external force is applied to it. In order to prevent impact from acting on the halogen lamp 28, the heat source unit 4 is floatingly supported with respect to the main body case 1. Specifically, as shown in FIG. 9, a ring-shaped spring support frame 64 that supports the heat source unit 4 is fixed to the inner surface of the wind pipe 7 surrounding the light source support structure, and the rear reflector 38 and the spring support frame 64 are opposite each other. Shock absorbing springs 65 that support the heat source unit 4 are arranged at three locations on the surface. In addition, a hexagonal ring-shaped unit support frame 66 that supports the heat source unit 4 is fixed to the inner surface of the wind pipe 7 surrounding the filter 30, and 3 A gel-like elastic body 67 that supports the heat source unit 4 is arranged at the location.

The spring receiving frame 64 is constructed by connecting three spring arms 70 formed of leaf springs in a hexagonal frame shape, and a spring seat 71 that receives one end of the shock absorbing spring 65 is provided at the center of each spring arm 70. is formed. A spring seat 72 for receiving the other end of the shock absorbing spring 65 is also formed on the air guide wall 46 of the rear reflector 38 facing the spring seat 71 . The unit support frame 66 is formed into a hexagonal frame shape using a plate spring, and gel holding portions 73 for holding the gel-like elastic body 67 are formed at three locations. As described above, in the heat source unit 4 floatingly supported by the main body case 1, the spring receiving frame 64 and the shock absorption spring 65 are elastically deformed, the unit support frame 66 is further elastically deformed, and the gel-like elastic body 67 absorbs the shock. By doing so, the impact is mitigated and absorbed and the impact is prevented from acting on the halogen lamp 28. Therefore, even if the main body case 1 collides with another object and receives an external impact, most of the external impact is absorbed by the impact absorbing spring 65 and the gel-like elastic body 67, and the impact is applied to the heat source unit 4. can be prevented from acting. Since the light-emitting body 28 can be well prevented from breaking down due to external impact or external vibration, the light-emitting function of the light-emitting body 28 can be properly exhibited over a long period of time.

When in use, the halogen lamp 28 is turned on, the blower fan 3 is driven, the hair is irradiated with infrared rays that have passed through the filter 30, and the drying air (cooling air) sent from the blower fan 3 is sent to the hair. and dry the hair. A portion of the drying air is introduced into the air guide wall 46 from the rear opening 58, flows into the first vent 48 from the light source cooling passage, cools the halogen lamp 28, reflector 29, and filter 30, and then flows into the second air guide wall 46. The air flows out of the reflector 29 from the ventilation port 42, merges with the dry air flowing through the air guide path 9, and is sent out from the air outlet 11. A portion of the dry air sent from the blower fan 3 creates a negative pressure around the second vent 42 while flowing along the air guide path 9 around the heat source unit 4 . Therefore, due to the Venturi effect, the air near the second ventilation port 42 inside the reflector 29 is attracted to the previous drying air, joins it, and is sent out to the air outlet 11 . Note that the drying air sent from the ventilation fan 3 is introduced as a positive pressure drying air into the inside of the air guide wall 46 from the rear opening 58, and after cooling the halogen lamp 28, reflector 29, and filter 30, It may be made to flow out of the reflector 29 through the two vent holes 42.

When the drying air flows out from the second vent 42, a portion of the light emitted from the halogen lamp 28 leaks out from the second vent 42. In this way, in order to prevent the light leaking from the second vent 42 from being irradiated from the air outlet 11 and causing glare to the user when drying hair, a second vent is provided on the outer surface of the second vent 42. An anti-glare structure is provided to guide the light leaking from the vent 42 in a direction away from the air outlet 11. In FIG. 1, the anti-glare structure includes a cylindrical anti-glare body 75 that covers the outer surface of the opening of the second vent 42, and in the first embodiment, the circumferential wall 62 described above also serves as the anti-glare body 75. There is.

If the circumferential wall 62 also serves as the anti-glare body 75 in this way, compared to the case where the anti-glare body 75 is provided separately from the press ring 60, the number of parts can be reduced by the use of the press ring 60, and the dryer can be improved. Manufacturing costs can be reduced. Further, the ring-shaped anti-glare body 75 covers the opening outer surface of all the second vent holes 42 formed in the reflector 29, and the rear end of the cylindrical wall of the anti-glare body 75 is connected to the rear opening of the second vent hole 42. It protrudes backward from the edge. According to such an anti-glare structure, the inner surface of the cylindrical wall of the anti-glare body 75 can reliably block the light emitted in the radial direction from the rear opening edge of the second vent 42 and the light emitted diagonally forward. A part of the light is irradiated onto the air guide path 9 through the space between the anti-glare body 75 and the circumferential surface of the reflector 29, but the rear end of the cylindrical wall of the anti-glare body 75 is behind the second vent 42. Since it is located behind the opening edge, all the light irradiated onto the air guide path 9 is repeatedly reflected in a backwardly inclined state. Therefore, it is possible to more reliably prevent the light in the air guide path 9 from being directed toward the air outlet 11.

As described above, when the outer surface of the opening of the second vent 42 is covered with the anti-glare body 75, a ventilation passage 76 through which dry air passes is formed between the anti-glare body 75 and the second vent 42. 42 and is formed in a lying L-shape. The front end of the ventilation passage 76 is blocked by a passage end wall 77 that protrudes from the front reflector 37 and contacts the inner surface of the anti-glare body 75, so that the drying air flowing into the ventilation passage 76 is reversed backward. Moving. Further, the drying air flowing out from the ventilation passage 76 reversely moves along the rear end of the passage end wall 77 and merges with the drying air flowing through the air guide passage 9. In order to smoothly perform such reverse movement of the drying air, a rear reversing guide surface 78 for reversing and guiding the drying air backward is formed at the inner corner sandwiched between the anti-glare body 75 and the passage end wall 77, and the anti-glare body A front reversing guide surface 79 for reversing and guiding the drying air in a forward direction is formed at the rear end of the reversing member 75 (see FIG. 1). The rear reversal guide surface 78 consists of a quarter-circular arc surface continuous with the passage end wall 77, and the front reversal guide surface 79 consists of a semicircular arc surface.

A sustained release ring 80 that releases beauty ingredients into the dry air is arranged around the constriction where the first reflective surface 39 and the second reflective surface 40 are adjacent to each other. The sustained release ring 80 is made of a porous ceramic body integrally equipped with an inner ring 81, an outer ring 82, and a group of radial walls 83 provided between the two rings, and contains beauty ingredients such as vitamins and collagen in the porous portion. is impregnated. The unit support frame 66, sustained release ring 80, and spring receiving frame 64 have a front clamping part 86 and a middle clamping part 87 provided at three locations on the front and back of the opposing surfaces of the half bodies 7a and 7b of the wind guide tube 7, respectively. , are firmly clamped and fixed by the rear clamping portion 88. As described above, when the sustained release ring 80 is provided facing the air guide path 9, the beauty ingredients are released into the dry air that comes into contact with the sustained release ring 80, and the dry air containing the beauty ingredients is sent to the air outlet 11. It can be sent from

In order to send negative ions to the hair together with the drying air, an ion emitting structure is provided inside the wind pipe 7 facing the blower outlet 11. The ion emission structure includes an electrode holder 91, three central electrodes (discharge electrodes) 92 supported by the electrode holder 91, and a peripheral electrode (counter electrode) 94 fixed to a cylindrical wall 93 surrounding the central electrode 92. It is equipped with The electrode holder 91 is clamped and fixed between a pair of clamping walls 95 provided on the wind guide tube 7 . A vent 96 for sending out infrared rays and drying air is formed in the auxiliary blow-off case 6, and an ion vent 97 is further formed in the center of the lower part of the case directly facing the center electrode 92. In FIG. 3, a thermal fuse 98 is arranged on the upper wall portion of the wind pipe 7 in front of the heat source unit 4.

In the hair dryer of the first embodiment configured as described above, the light emitting body 28 and the reflector 29 are cooled by the drying air introduced into the interior of the reflector 29, while the light leaking from the second vent 42 together with the drying air is prevented. By shielding with the dazzling body 75, it is possible to prevent the light from being irradiated along the air guide path 9 toward the air outlet 11 side. For example, the light leaking from the second vent 42 is reflected toward the second vent 42 by the anti-glare body 75, or is scattered by the anti-glare body 75, and then absorbed and attenuated by the anti-glare body 75. can be done. Therefore, it is possible to reliably prevent the light leaking out of the reflector 29 from being irradiated from the air outlet 11, thereby providing a hair dryer that does not cause the user to feel dazzling when drying hair.

Further, since the anti-glare body 75 is formed into a cylindrical shape and the rear end of the cylinder wall of the anti-glare body 75 is made to protrude rearward from the rear opening edge of the second vent 42, Light emitted in the radial direction from the rear opening edge and light emitted diagonally forward can be reliably blocked by the inner surface of the cylindrical wall of the anti-glare body 75. A part of the light is irradiated onto the air guide path 9 through the space between the anti-glare body 75 and the circumferential surface of the reflector 29, but the rear end of the cylindrical wall of the anti-glare body 75 is connected to the second vent 42. Since it is located behind the rear opening edge, all the light irradiated onto the air guide path 9 is repeatedly reflected in a backwardly inclined state. Therefore, it is possible to more reliably prevent the light in the air guide path 9 from being directed toward the air outlet 11.

In the first embodiment, the reflector 29 is configured by the front reflector 37 and the rear reflector 38, and the filter 30 disposed in front of the front reflector 37 is fixed by a filter support structure 59. Further, the filter support structure 59 includes a filter seat 41 formed on the front reflector 37, and a holding ring 60 that clamps and fixes the filter 30 in cooperation with the filter seat 41. According to such a dryer, the filter 30 can be easily assembled to the front reflector 37 by assembling the filter 30 to the filter seat 41 and fitting and fixing the retaining ring 60 to the front peripheral surface of the front reflector 37. It can be firmly fixed so that it cannot be separated.

In the first embodiment, the drying air supplied from the blower fan 3 is introduced into the reflector 29 through the first vent 48 and is sent out through the second vent 42 . According to such a dryer, the direction of the flow of the drying air inside the reflector 29 and the direction of the flow of the drying air sent from the blower fan 3 in the air guide path 9 can be made to match, so that one part of the drying air The light emitting body 28 and the reflector 29 can be cooled appropriately by introducing the part into the interior of the reflector 29 reliably.

In addition, a ventilation passage 76 is formed between the anti-glare body 75 and the second ventilation port 42, and the drying air is directed backward to the inner corner sandwiched between the passage end wall 77 and the anti-glare body 75 at the front end of the passage 76. A reversal guide surface 78 is formed after the reversal guide. In this way, when the rear reversing guide surface 78 is formed at the inner corner between the anti-glare body 75 and the passage end wall 77, the drying air after passing through the second ventilation port 42 is directed to the rear reversing guide surface 78. This allows smooth reversal guidance toward the rear opening of the ventilation passage 76. Therefore, the flow of drying air in the ventilation passage 76 can be made to flow in an orderly manner, and it is possible to eliminate a part of the drying air from remaining in the second ventilation port 42 and the ventilation passage 76 after cooling the light emitter 28 and the reflector 29. .

In addition, since a front reversing guide surface 79 is formed at the rear end of the anti-glare body 75 to reversely guide the dry air flowing out from the ventilation passage 76 in a forward direction, the dry air flowing out from the ventilation passage 76 is directed to the anti-glare body 75. The drying air can be smoothly reversed and guided toward the outer surface of the air guide path 9 to join the flowing drying air.

In the first embodiment, the reflector 29 is constructed by joining the front reflector 37 and the rear reflector 38, and the front reflector 37 and the rear reflector 38 have a front engagement member on the joint surface that engages with each other in an uneven manner to restrict the displacement movement of the joining partner. A mating portion 51 and a rear engaging portion 54 are formed. According to such a reflector 29, by engaging the front engaging portion 51 and the rear engaging portion 54 in a convex-concave manner, the front reflector 37 and the rear reflector 38 can be properly connected while regulating the displacement movement of the mating partners and positioning them. Can be assembled.

Further, since the screw 56 inserted through either the front engaging part 51 or the rear engaging part 54 is screwed into the screw boss 55 provided on the other, the front reflector 37 and the rear reflector 38 are fixed inseparably. Although the fastening structure is simpler, the front reflector 37 and the rear reflector 38 can be firmly fastened and fixed using the screws 56. Therefore, the optical characteristics of the reflective surfaces 39, 40, and 43 provided on the reflector 29 can always be kept constant. Furthermore, the front reflector 37 is constructed by joining a pair of half bodies 37a and 37b, and a front engagement part that falls into and engages with the rear engagement part 54 of the rear reflector 38 is provided on the joint surface of the half bodies 37a and 37b. Since the portion 51 is formed, the two halves 37a and 37b are joined together, and with the front engaging portion 51 and the rear engaging portion 54 engaged with each other, the screw 56 inserted through the front engaging portion 51 is inserted into the rear. By screwing into the screw boss 55 of the engaging portion 54, the front reflector 37 and the rear reflector 38 can be firmly fastened and fixed. Furthermore, even if the shapes and structures of the front reflector 37 and the rear reflector 38 are changed in various ways, the half bodies 37a, 37b and the rear reflector 38 can be properly integrated while being positioned relative to each other. The front reflector 37 may be composed of one reflecting tube. In that case, it can be constructed from a die-cast molded product made of metal such as aluminum. Further, the front engaging portion 51, the rear engaging portion 54, and the screw 56 do not need to be provided at two opposing locations, but may be provided at only one location.

(Example 2) FIG. 12 shows Example 2 of a dryer (light irradiation device) in which the filter support structure 59 is changed. In this second embodiment, the presser ring 60 is integrally formed with the half bodies 7a and 7b of the wind guide tube 7, and the ribs 99 provided on the inner surfaces of the half bodies 7a and 7b 60a and 60b, a circular second vent 42 is formed between the front opening of the front reflector 37 and the rear surface of the holding ring 60, and the filter 30 and the third This embodiment differs from the first embodiment in that the grille 25 is clamped and fixed by both half rings 60a and 60b. Since the rest is the same as in Example 1, the same members are given the same reference numerals and their explanations will be omitted. The same applies to the following examples.

As described above, according to the dryer in which the second ventilation port 42 is formed in a circular manner in the front part of the reflector 29, the drying air can be smoothly sent out through the second ventilation port 42. The light emitter 28 and the reflector 29 can be effectively cooled by the dry air. Further, since the anti-glare body 75 and the filter support structure 59 are integrally formed with the pair of half-rings 60a and 60b, the number of parts can be reduced and the manufacturing cost of the dryer can be reduced. Since it is not necessary to provide the third grill 25 at the air outlet 11, there is also the advantage that the structure of the air outlet 11 can be simplified. Since the filter 30 is supported by a presser ring 60 that is separate from the reflector 29, visible light emitted from the air outlet 11 is reliably attenuated, and the user does not feel dazzled when drying the hair. We can provide a hair dryer. In addition, since the reflector 29 and the filter support structure 59 are supported independently, the light emitting body 28 can be removed from the socket 34 when the main body case 1 is disassembled, making it possible to replace the light emitting body 28 with less effort. This can be done easily. There is also the advantage that the heat source unit 4 can be made lighter.

(Example 3) FIG. 13 shows Example 3 of a dryer (light irradiation device) in which the filter support structure 59 is changed. In this third embodiment, the front reflector 37 is composed of a front reflector body 101 and a rear reflector body 102, the front reflector body 101 is composed of half bodies 101a and 101b, and the filter 30 is composed of half bodies 101a and 101b. It was fixed by clamping it. Further, the holding ring 60 is formed integrally with the half bodies 101a and 101b, so that the anti-glare structure and the filter support structure are integrated with the pair of half bodies 101a and 101b. Furthermore, a group of round holes opened at regular intervals along the circumferential surface of the front reflector body 101 function as the second ventilation holes 42. According to such a reflector structure, the anti-glare structure and the filter support structure can be integrated with the pair of half-split bodies 101a and 101b, so the filter support structure 59 can be simplified.

(Example 4) FIG. 14 shows Example 4 of a dryer (light irradiation device) in which a part of the structure of the front reflector 37 is changed. In the fourth embodiment, on the circumferential surface of the front reflector 37 facing the rear of the air guide path 9, there is a constriction part (negative pressure forming structure) 104 that reduces the passage cross-sectional area of the air guide path 9 surrounding the front reflector 37. A bulge is formed. Specifically, the circumferential surface of the front reflector 37 is formed into a tapered shape that widens forward, so that the outer surface of the front end surface 105 of the aperture part 104 is flush with the virtual outer surface passing through the circumferential surface of the anti-glare body 75. The front reflector 37 is made of a plastic molded product, and a reflective film serving as a first reflective surface 39 and a second reflective surface 40 is formed on its inner surface. The reflective film may be formed, for example, by plating. When the constriction part 104 is formed on the circumferential surface of the front reflector 37 as described above, the passage cross-sectional area of the air guide path 9 surrounding the front reflector 37 is gradually reduced, and the air flows around the front reflector 37. The flow rate of drying air can be increased. In addition, since the outer surface of the front end of the constriction part 104 is flush with the virtual outer surface passing through the circumferential surface of the anti-glare body 75, the drying air flowing around the front reflector 37 flows from the ventilation passage 76 to the second ventilation port 42. It can prevent the inflow. Note that the outer surface of the aperture portion 104 may be located inside the virtual outer surface passing through the circumferential surface of the anti-glare body 75.

(Example 5) FIG. 15 shows Example 5 of a dryer (light irradiation device) in which the front end structure of the aperture part 104 is changed. In Embodiment 5, similarly to Embodiment 4, a tapered constriction portion 104 is formed on the circumferential surface of the front reflector 37, but the front end surface 105 of the constriction portion 104 that directly faces the rear end of the anti-glare body 75 is is tilted backward by a predetermined angle α with respect to the central axis P of the main body case 1. When the front end surface 105 of the aperture part 104 is tilted backward in this way, the light reflected on the passage end wall 77 and the inner surface of the anti-glare body 75 is emitted backward from the outlet of the ventilation passage 76, and the air outlet It is possible to further reliably prevent light from leaking to the 11 side.

(Example 6) FIG. 16 shows Example 6 of a dryer (light irradiation device) in which a part of the structure of the front reflector 37 is changed. In this sixth embodiment, a negative pressure forming structure is formed on the circumferential surface of the front reflector 37. Specifically, an aperture ring 112 is disposed around the front reversing guide surface 79 provided at the rear end of the anti-glare body 75 to reduce the passage cross-sectional area of the air guide path 9 surrounding the front reversing guide surface 79. This aperture ring 112 constitutes the negative pressure forming structure 106. An aperture surface 107 whose front side is curved is provided on the inner surface of the aperture ring 112 , and the ring peripheral surface is fixed to the wind guide tube 7 surrounding the front reversing guide surface 79 . The aperture ring 112 is made of a porous ceramic body, similar to the sustained release ring 80 of Example 1, and its porous portions are impregnated with beauty ingredients such as vitamins and collagen.

When the aperture surface 107 is formed on the circumferential surface of the front reflector 37 as described above, the passage cross-sectional area of the air guide path 9 surrounding the front reflector 37 is gradually reduced so that the air flows around the front reflector 37. It is possible to reduce the pressure of the drying air and increase the flow rate. Along with this, the drying air discharged from the ventilation passage 76 is surrounded by a flow of drying air with a high flow velocity, so that the drying air flowing from the ventilation passage 76 around the front reversing guide surface 79 is transferred to the drying air with a high flow velocity. They can be reliably merged by the wind and can be smoothly fed toward the outlet 11. Further, since the pressure of the drying air discharged from the ventilation passage 76 is greater than the pressure of the drying air flowing around the anti-glare body 75, the drying air flowing around the anti-glare body 75 flows from the ventilation passage 76 to the reflector 29. It can effectively prevent it from getting inside. Since the speed of the drying air can be increased by the aperture ring 112 having a simple structure, the structure of the negative pressure forming structure 106 can be simplified and the manufacturing cost of the dryer can be reduced. Furthermore, when the aperture ring 112 formed of a porous material is impregnated and held with beauty ingredients, the beauty ingredients such as collagen and vitamins are released into the dry air that comes into contact with the aperture ring 112 while flowing through the air guide path 9. The drying air containing the air can be supplied from the outlet 11. Moreover, since the drying air containing beauty ingredients sent from the air outlet 11 adheres to the hair and scalp, it is possible to provide a dryer that can exhibit a beauty effect while drying the hair.

(Example 7) FIG. 17 shows Example 7 of a dryer (light irradiation device) in which a part of the structure of the front reflector 37 is changed. In this seventh embodiment as well, a negative pressure forming structure is formed on the circumferential surface of the front reflector 37. Specifically, a Venturi tube 108 having an inner tube 109 and an outer tube 110 is arranged between the front reflector 37 and the wind guide tube 7, and a front tapered ring-shaped tube is provided between the inner tube 109 and the outer tube 110. A throttle passage 111 is formed. The inner cylinder 109 is a curved cylinder that widens at the front, and the outer cylinder 110 is a tapered cylinder that narrows at the front. It is provided over the rear of the 75. Although not shown, the inner tube 109 and the outer tube 110 are connected by a plurality of radial ribs. When the venturi cylinder 108 is arranged around the front reflector 37 in this manner, the speed of the drying air passing through the throttle passage 111 can be significantly increased. Further, the drying air flowing from the ventilation passage 76 to the outside of the anti-glare body 75 via the front reversing guide surface 79 can be merged by the suction effect of the fast-flowing drying air coming out of the Venturi cylinder 108. By promoting the flow of drying air inside the reflector 37, the halogen lamp 28 and the reflector 29 can be effectively cooled by the drying air.

(Example 8) FIG. 18 shows Example 8 of a dryer (light irradiation device). In the dryer of Example 8, the direction of passage of the drying air inside the reflector 29 is opposite to that of the first embodiment. Specifically, the drying air sent from the blower fan 3 is introduced into the reflector 29 from the second vent 42 , is sent out from the first vent 48 , and is passed through the reflector from the vent outlet 114 opened in the air guide wall 46 . 29 is sent out. In order to effectively introduce the dry air sent from the blower fan 3 into the second vent 42, the anti-glare body 75 also serves as a wind guide body 115 for collecting air. The air guide body 115 is formed as a curved wall that protrudes rearward from the rear edge of the ventilation passage 76 and tapers in the front, and directs the dry air flowing around the reflector 29 to the second ventilation opening. 42.

A baffle plate 116 is arranged on the rear outer surface of the first vent 48 . The baffle plate 116 is formed into a ring shape with a diameter larger than the diameter of the first ventilation port 48 and is supported by a plurality of radiating walls protruding from the inner surface of the air guiding wall 46 . It faces the rear circumference. The wind guide wall 46 is constructed as an independent component separate from the rear reflector 38. By providing the baffle plate 116 in this way, it is possible to prevent the dry air sent from the blower fan 3 and flowing inside the air guide wall 46 from flowing into the inside of the reflector 29 from the first ventilation port 48. can. Therefore, the flow of dry air flowing from the second vent hole 42 toward the first vent hole 48 inside the reflector 29 is made smooth and suitable, and the light emitting body 28 and the reflector 29 are cooled more effectively. Can be done. As can be understood from this embodiment, the drying air can take the form of flowing backward inside the reflector 29.

According to such a dryer, a part of the drying air flowing through the air guide path 9 toward the outlet 11 is reversely guided by the air guide body 115 and introduced into the reflector 29 from the second vent 42 to emit light. After the body 28 and reflector 29 have been cooled, they can be sent out through the first vent 48 . At this time, the air guide body 115 protruding around the reflector 29 receives the dry air and guides it in reverse, so more dry air is introduced into the reflector 29 and the light emitting body 28 and the reflector 29 are effectively can be cooled to

The dryer (light irradiation device) described in each of the above embodiments can be implemented in the form of the light irradiation device shown below. Examples of the light irradiation device include a phototherapy device that irradiates the affected area with light, and a photodrying device that irradiates light onto the object to be dried to promote drying.

This is a light irradiation device that includes a light emitting body 28 and a reflector 29 that reflects and guides the light emitted from the light emitting body 28 toward the irradiation target, and an irradiation opening is provided in the front part of the reflector 29. 29 includes a first reflective surface 39 that reflects and guides the light emitted from the light emitter 28 forward toward the irradiation aperture, and a first reflective surface 39 that is arranged adjacent to the first reflective surface 39 and guides the light emitted from the light emitter 28 backward. A second reflective surface 40 is arranged adjacent to the second reflective surface 40 to reflect and guide the light emitted from the light emitter 28 and the light reflected and guided by the second reflective surface 40 toward the irradiation opening. A light irradiation device in which a third reflective surface 43 for guiding reflection is provided, and the light emitting part 36 of the light emitter 28 faces an adjacent portion of the second reflective surface 40 and the third reflective surface 43.
According to the above light irradiation device, the light emitted from the light emitter 28 and reaching each of the reflecting surfaces 39 , 40 , 43 is efficiently reflected and guided by each of the reflecting surfaces 39 , 40 , 43 and irradiated onto the filter 30 . be able to. In addition, since the light emitting part 36 of the light emitting body 28, which is long in the front and back, is exposed to the adjacent portion of the second reflecting surface 40 and the third reflecting surface 43, the radial dimension of the reflector 29 is prevented from increasing, making it compact. The light emitted from the light emitting body 28 can be irradiated toward the filter 30 while achieving the desired effect. This is because if the light irradiated from the light emitter 28 is reflected and guided by, for example, only one reflecting surface, the diameter of the irradiation aperture of the reflector 29 becomes large, and the reflector 29 is correspondingly large. This is because it becomes

A light irradiation device in which the longitudinal dimension of a reflector 29 including a first reflective surface 39, a second reflective surface 40, and a third reflective surface 43 is set larger than the radial dimension of the reflector 29.
According to such a reflector 29, it is possible to configure a reflector 29 with an elongated cylindrical structure suitable for using a long light emitting body 28 in the front and rear directions, and the light irradiation device can be made more compact due to the small radial dimension of the reflector 29. .

A light irradiation device in which a filter 30 is disposed in an irradiation opening in front of a reflector 29.
According to such a light irradiation device, it is possible to reliably prevent unattenuated visible light from being emitted from the irradiation aperture, so it is possible to provide a light irradiation device that does not cause the user to feel dazzling during use.

The reflector 29 is constructed by joining a front reflector 37 and a rear reflector 38, and a filter 30 is arranged in front of the front reflector 37 and is fixed to the front reflector 37 by a filter support structure 59. Reference numeral 59 denotes a filter seat 41 formed on the inner surface of the front end of the front reflector 37, and a retaining ring 60 that is externally fitted and fixed to the front peripheral surface of the front reflector 37 and cooperates with the filter seat 41 to clamp and fix the filter 30. A light irradiation device equipped with
According to such a light irradiation device, the filter 30 can be easily assembled to the front reflector 37 by assembling the filter 30 to the filter seat 41 and fitting and fixing the retaining ring 60 to the front peripheral surface of the front reflector 37. It can be firmly fixed in an irremovable manner.

The reflector 29 is constructed by joining a front reflector 37 and a rear reflector 38. A light irradiation device in which a front engagement part 51 and a rear engagement part 54 are formed on the joint surfaces of the front reflector 37 and the rear reflector 38 to engage with each other in a concave and convex manner to restrict the displacement movement of the joined partner.
According to such a light irradiation device, the front reflector 37 and the rear reflector 38 can be adjusted properly by making the front engagement part 51 and the rear engagement part 54 engage with each other in a concave and convex manner, thereby regulating the displacement movement of the joining partner and positioning it. It can be assembled into

Light irradiation in which the front reflector 37 and the rear reflector 38 are fixed inseparably by screwing the screw 56 inserted into either the front engagement part 51 or the rear engagement part 54 into the screw boss 55 provided on the other. Device.
According to such a light irradiation device, the front reflector 37 and the rear reflector 38 can be firmly fastened and fixed using the screws 56, although the fastening structure is simpler. Therefore, the optical characteristics of the reflective surfaces 39, 40, and 43 provided on the reflector 29 can always be kept constant.

The front reflector 37 is constructed by joining a pair of divided half bodies 37a and 37b, and the joint surface of the rear reflector 38 has a joint groove 52 that fits and supports the rear edge of the front reflector 37. A joint wall 53 is formed to support the peripheral surface of the rear edge of the front reflector 37, and a concave rear engaging portion 54 and a screw boss 55 formed by cutting out the joint wall 53 are formed at multiple locations on the joint wall 53. are formed, and front engaging portions 51 consisting of protrusions that fall into and engage with the rear engaging portions 54 are formed at multiple locations on the joint surfaces of the half bodies 37a and 37b. 37a and 37b are joined and the front engaging part 51 and the rear engaging part 54 are engaged with each other in a concave and convex manner, the screw 56 inserted into the front engaging part 51 is screwed into the screw boss 55 of the rear engaging part 54. , a light irradiation device in which a front reflector 37 and a rear reflector 38 are integrated.

According to such a light irradiation device, the pair of half bodies 37a and 37b are joined, and the screw 56 inserted into the front engagement part 51 is in a state where the front engagement part 51 and the rear engagement part 54 are engaged with each other in a concave and convex manner. By screwing into the screw boss 55 of the rear engaging portion 54, the front reflector 37 and the rear reflector 38 can be firmly fastened and fixed. Furthermore, even if the shapes and structures of the front reflector 37 and the rear reflector 38 are changed in various ways, the half bodies 37a, 37b and the rear reflector 38 can be properly integrated while being positioned relative to each other.

In addition to the above, the light emitting body 28 may be an incandescent lamp, a xenon lamp, a metal halide lamp, etc. in addition to a halogen lamp. In the present invention, the term "filter that prevents transmission of visible light" does not mean completely blocking visible light, but has the same meaning as attenuating visible light. Of course, a filter that can completely block visible light and emit only heat rays (infrared light) may also be used. If the second ventilation port 42 is intermittently formed of a group of slits having a small circumferential length, it is not necessary to form the anti-glare body 75 in a cylindrical shape, and a group of slits covering the outer surface of each slit are not required. It may be composed of an anti-glare wall.

In addition to the form in which the air suction port 10 is formed on the rear end back surface of the main body case 1 as in each of the above-described embodiments, the rear end back surface of the main body case 1 is closed and the air suction port 10 is formed on the rear end circumferential side surface of the main case 1. It may be in the form of being formed. The suction port 10 provided at one end (rear end) of the air guide path 9 according to the present invention includes these forms. When the suction port 10 is provided on the peripheral side surface of the rear end of the main body case 1, the blower fan 3 is constituted by a propeller-type or impeller-type axial fan, centripetal fan, or the like. The shape of the reflector 29 can be changed as appropriate depending on the manner in which infrared light is radiated to the object to be dried.
The dryer (light irradiation device) according to the present invention is not limited to a hair dryer that dries hair, but can also be applied to body parts such as limbs and nails, or to a dryer not only for humans but also for animals such as dogs and cats. , it can also be applied to a clothes dryer for clothes. Furthermore, the hair dryer (light irradiation device) of the present invention is a device that irradiates light onto an object to be dried. It can also be applied to hair irons equipped with

1 Main body case 2 Fan motor 3 Blow fan 4 Heat source unit 7 Wind guide tube 8 Exterior tube 9 Air guide path 10 Suction port 11 Air outlet 28 Halogen lamp (light emitter)
29 Reflector 30 Filter 32 Housing 33 Plug 34 Socket 37 Front reflector 37a Half body 37b Half body 38 Rear reflector 39 First reflective surface 40 Second reflective surface 41 Filter seat 42 Second vent 43 Third reflective surface 45 Light source Stand 46 Air guiding wall 47 Screw 48 First vent 51 Front engaging part 52 Joint groove 53 Joint wall 54 Rear engaging part 55 Screw boss 56 Screw 59 Filter support structure 60 Holding ring 62 Surrounding wall 65 Shock absorption spring 75 Anti-glare Body 76 Ventilation passage 77 Passage end wall 78 Rear reversal guide surface 79 Front reversal guide surface 104 Throttle section 105 Front end surface of throttle section 106 Negative pressure formation structure 107 Throttle surface 108 Venturi cylinder 109 Inner cylinder 110 Outer cylinder 111 Restriction passage 112 Restriction ring 115 Air guide body 116 Baffle plate P Central axis of main body case

Claims (3)

A light irradiation device comprising a light emitter (28) and a reflector (29) that reflects and guides the light irradiated from the light emitter (28) toward the irradiation target,
An irradiation opening is provided in the front part of the reflector (29),
The reflector (29) includes a first reflective surface (39) that reflects and guides light emitted from the light emitter (28) forward toward the irradiation aperture, and is arranged adjacent to the first reflective surface (39) to emit light. a second reflective surface (40) that reflects and guides the light emitted from the body (28) backward; A third reflective surface (43) is provided that reflects and guides the light reflected and guided by the reflective surface (40) forward toward the irradiation aperture,
The light emitting part (36) of the light emitter (28) faces the adjacent portion of the second reflective surface (40) and the third reflective surface (43) ,
The reflector (29) includes a front reflector (37) and a third reflective surface (43), which are a pair of half-split bodies (37a and 37b) provided with a first reflective surface (39) and a second reflective surface (40). ) is formed by joining a rear reflector (38),
A front engagement portion (51) is formed at the rear end (57) of the front reflector (37) and projects in the radial direction,
A joint groove (52) that fits and supports the rear edge (57) of the front reflector (37) is provided at the front end of the rear reflector (38), and a joint that supports the peripheral surface of the rear edge (57) of the front reflector (37). A concave post-engaging portion (54) is formed by cutting out the wall (53) and the joining wall (53),
The engagement between the rear edge (57) of the front reflector (37) and the joint groove (52) of the rear reflector (38) prevents displacement in the radial direction.
A light irradiation device characterized in that rotation around a central axis is prevented by engagement between a front engagement portion (51) of a front reflector (37) and a rear engagement portion (54) of a rear reflector (38). .
The front-rear dimension of the reflector (29) including the first reflective surface (39), the second reflective surface (40), and the third reflective surface (43) is set to be larger than the radial dimension of the reflector (29). The light irradiation device according to claim 1, characterized in that:
Screw the screw (56) inserted into either the front engagement part (51) or the rear engagement part (54) into the screw boss (55) provided on the other, and then connect the front reflector (37) and the rear reflector ( 38) The light irradiation device according to claim 2 , wherein the light irradiation device is fixed in an inseparable manner.