CN217938920U - Ultraviolet therapeutic equipment - Google Patents

Abstract

In an ultraviolet therapeutic apparatus using an LED as a light source, heat dissipation is further improved. The ultraviolet therapeutic apparatus (1) is provided with: a housing (24) having a light emission window (23) that emits light including ultraviolet rays; an LED substrate (25 b) which is provided in the housing (24) so as to face the light emission window (23) and to which an LED light source (25 a) for emitting light including ultraviolet rays toward the light emission window (23) is attached; a heat sink (27) that is mounted on the surface of the LED substrate (25 b) on the side opposite to the mounting surface of the LED light source (25 a) within the housing (24) and that dissipates heat from the LED substrate (25 b); an air inlet (24 a) which is provided at a position corresponding to the heat sink (27) on the surface of the housing (24) intersecting the light emission window (23) and takes cooling air into the housing (24); and a blower (fan) (28) disposed in the housing (24) on the side of the heat sink (27) opposite the LED substrate (25 b).

Description

Ultraviolet therapeutic equipment

Technical Field

The utility model relates to an ultraviolet therapeutic apparatus using LED as light source.

Background

Conventionally, as phototherapy, there is ultraviolet therapy using ultraviolet rays in a wavelength range of UVA (wavelength 320nm to 400 nm) and UVB (wavelength 280 to 320 nm). Ultraviolet treatment is a method of achieving immunosuppression by ultraviolet irradiation to obtain a therapeutic effect.

As an ultraviolet therapeutic apparatus for treating skin diseases by ultraviolet rays, for example, patent document 1 discloses a configuration including a lamp light source as an ultraviolet source.

On the other hand, recently, the development of LEDs has become remarkable, and not only general lighting but also switching of a light source from a lamp to an LED has been progressing in many industrial machines and industrial machines. In addition, LEDs have been increasingly used for high output in the ultraviolet region as well as in the visible light region, and the LED light source is expected to be used in the medical field.

When an LED is used as the light source, a circuit configuration that is substantially simpler than that of a lamp power supply device can be realized, and the device can be reduced in size and weight. Therefore, in the ultraviolet therapy apparatus, the use of LED as a light source instead of a lamp light source has been studied, and in recent years, an ultraviolet therapy apparatus using an ultraviolet light emitting element (UV-LED) as a light source of ultraviolet light has been proposed.

[ Prior Art document ]

[ patent document ]

[ patent document 1 ] Japanese patent application laid-open No. 2010-5438

SUMMERY OF THE UTILITY MODEL

[ SUMMARY OF THE INVENTION ] A method for producing a semiconductor device

[ problem to be solved by the utility model ]

As described above, although UV-LEDs have been increasing their output in recent years, the emission efficiency of LEDs in the UVB region is still about several%. Therefore, most of the power supplied to the LED becomes heat. If heat generated from the LED is not properly dissipated, wavelength conversion of the emitted light (wavelength lengthening) or thermal damage of the LED element occurs.

Therefore, in the case where an LED is used as a light source in an ultraviolet therapeutic apparatus, it is necessary to efficiently dissipate heat generated by the LED when the ultraviolet therapeutic apparatus is turned on.

Therefore, the present invention has an object to further improve heat dissipation in an ultraviolet therapeutic apparatus using an LED as a light source.

[ MEANS FOR SOLVING PROBLEMS ] A method for solving the problems

In order to solve the above problem, an ultraviolet therapeutic apparatus according to an aspect of the present invention includes: a housing having a light emission window that emits light including ultraviolet rays; an LED substrate provided in the housing so as to face the light emission window, and having an LED light source mounted thereon that emits light including the ultraviolet rays toward the light emission window; a heat sink which is mounted on a surface of the LED substrate on a side opposite to the mounting surface of the LED light source in the housing and which dissipates heat of the LED substrate; an air inlet provided at a position corresponding to the heat sink on a surface of the housing intersecting the light emission window, the air inlet taking cooling air into the housing; and a blower disposed in the housing on a side of the heat sink opposite to the LED substrate.

In this way, since the air intake port for taking in the cooling air into the interior of the case is provided at the position corresponding to the heat sink on the side surface of the case, the cooling air can be first blown to the heat sink, and the heat sink can be cooled efficiently. This improves the heat dissipation characteristics of the heat sink, and efficiently dissipates heat generated by the LED.

The above-described ultraviolet treatment apparatus may further include an exhaust port provided on a surface of the casing opposite to the surface on which the light radiation window is provided, the exhaust port discharging the cooling air sent from the blower to the outside of the casing.

In this case, the exhaust wind can be prevented from blowing to the patient. Further, the operator does not receive the exhaust air unless the operator is positioned on a straight line with the affected part through the treatment tool. Even if the patient and the operator are positioned on a straight line with the treatment tool interposed therebetween, the patient is still temporary, and the operator can easily avoid the exhaust wind. Therefore, the discomfort caused by direct blowing of the exhaust wind during treatment can be reduced for both the patient and the operator.

The ultraviolet treatment apparatus may further include a grip portion connected to a surface of the housing intersecting the light emission window and gripped by an operator.

In this case, the operator (user) can easily operate the treatment tool by gripping the grip portion. Therefore, the operator can easily operate to avoid the exhaust wind from blowing to himself or a patient.

In the above ultraviolet treatment apparatus, the grip portion may extend from a position where the heat sink is disposed on a surface of the housing intersecting the light emission window or a position on a side opposite to the light emission window with respect to the position where the heat sink is disposed, and an extending direction of the grip portion may intersect an arrangement direction of the light emission window, the LED substrate, and the heat sink.

In this case, in the ultraviolet treatment apparatus using the LED as the light source, the grip portion can be provided in consideration of the position where the heat sink, which is a heavy element in terms of weight, is disposed. When the grip portion is located in the vicinity of the heat sink, the grip portion can be held at a position close to the center of gravity of the treatment device, so that the operator can stably grip the treatment device and can stably bring the light irradiation portion into close contact with the affected part. Further, even when the grip portion is positioned rearward (on the side opposite to the light emission window) of the heat sink, the weight of the treatment tool can be easily supported on the affected part during irradiation, and the operator can stably bring the light irradiation part into close contact with the affected part.

In the above-described ultraviolet treatment apparatus, the air inlet may be provided at least on a surface of the housing on a side opposite to a surface to which the grip portion is coupled, the surface being a surface intersecting the light emission window.

In this case, the air inlet can be prevented from being clogged by the hand holding the grip portion. In addition, since the treatment is usually performed by holding the grip portion with the housing (light irradiation portion) facing upward, the cooling air taken into the housing from the air inlet provided on the upper surface, which is the surface opposite to the surface to which the grip portion is connected, can preferentially cool the upper side of the LED substrate which tends to become high in temperature. Therefore, heat generated by the LED can be efficiently dissipated.

In the above ultraviolet therapeutic apparatus, the air inlet may be provided on a surface of the casing intersecting the light radiation window so as to face the light radiation window with the heat sink interposed therebetween.

In this case, the cooling air can be supplied to the radiator from both sides. Therefore, the cooling unevenness, in which only one of the radiators is cooled, can be reduced.

In the above-described ultraviolet treatment apparatus, the heat sink may include a plurality of plate-shaped fins, and the air inlet may be provided on a surface of the housing intersecting the light radiation window so as to face an extending direction of the fins.

In this case, the cooling air introduced into the heat sink can be made to flow between the fins, and the cooling characteristics of the heat sink can be further improved.

In the above-described ultraviolet treatment apparatus, the blower may be an axial fan.

In this case, the wind speed on the intake side can be made weak, and therefore the intake air near the intake port can be made less likely to be felt. That is, even when the operator is on the side surface side of the casing, the operator is less likely to feel the intake air.

In the above ultraviolet treatment apparatus, the axial flow fan may be disposed such that a suction surface faces the heat sink, an exhaust port may be provided in a surface of the casing opposite to the surface on which the light radiation window is provided, and the exhaust port may discharge the cooling air discharged from a discharge surface of the axial flow fan to the outside of the casing.

In this case, the cooling air that has taken heat from the heat sink and has become a high temperature can be quickly discharged to the outside of the case.

[ Utility model effect ] is provided

According to the utility model discloses, in the ultraviolet therapy apparatus who uses LED as the light source, can further improve the thermal diffusivity.

Drawings

Fig. 1 is a block diagram showing an example of the configuration of the ultraviolet treatment apparatus according to the present embodiment.

Fig. 2 is a diagram showing a configuration example of the treatment tool.

Fig. 3 shows an example of the structure of the heat sink.

Fig. 4 shows another example of the heat sink.

Fig. 5 is a diagram showing another configuration example of the treatment device.

Fig. 6 is a diagram showing another configuration example of the treatment device.

Detailed Description

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

In the drawings, the dimensional ratio of the drawings does not necessarily coincide with an actual dimensional ratio, and the dimensional ratios between the drawings do not necessarily coincide with each other.

Fig. 1 is a block diagram showing an example of the configuration of an ultraviolet therapeutic apparatus 1 according to the present embodiment.

The ultraviolet therapeutic apparatus 1 includes: a treatment tool 2 having an LED light source that emits light including ultraviolet rays; and a main body section 4 for supplying power to the treatment tool 2 and controlling the LED light source. The treatment tool 2 is configured to be movable with one hand (a handheld configuration), and is configured to be movable with respect to the main body 4 within a range in which the connection cord 6 extends by the operator. Here, the operator is a person (for example, a doctor, a nurse, or the like) different from the patient.

In the following description, ultraviolet rays and light including ultraviolet rays may be referred to simply as "light".

The treatment device 2 includes: a light irradiation unit 21 for housing the LED light source; a grip (handle) 22 for an operator to grip with one hand; and a light emission window 23 provided in the light irradiation section 21 to emit light.

The main body section 4 includes an input section 41, a display section 42, a power supply unit 43, a control unit 44, and an LED driving unit 45. The treatment device 2 and the main body 4 are connected by a connection line 6, and the connection line 6 includes a power line 6a indicated by a thick line and a signal line 6b indicated by a thin line.

The input unit 41 receives information input by an operator and outputs the information to the control unit 44. The information input by the operator includes information related to the dose of ultraviolet light to be irradiated to the affected area.

The display unit 42 can display the ultraviolet radiation illuminance, the irradiation time, the elapsed time during ultraviolet irradiation, and the like. In addition, even when some abnormality occurs in the ultraviolet treatment apparatus 1, the display unit 42 can display information (error message or the like) indicating the occurrence of the abnormality.

The power supply unit 43 converts the electric power supplied from the external power supply 8 into a voltage suitable for each unit of the subsequent stage and supplies the voltage.

The control unit 44 controls the LED driving unit 45 based on the information input from the input unit 41, and controls the irradiation amount (irradiation illuminance or irradiation time) of the LED light source included in the treatment tool 2.

The LED driving unit 45 supplies power to the LED light source in accordance with a control signal from the control unit 44.

The procedure for irradiating the affected part with ultraviolet rays by the operator using the ultraviolet treatment apparatus 1 of the present embodiment will be described below.

First, the operator operates the input unit 41 to input information on the dose of ultraviolet light (irradiation time and irradiance) to be irradiated to the affected part. Next, the operator holds the holding part 22 of the treatment device 2, and brings the light emission window 23 into contact with or close to the affected part.

Then, the operator presses a switch (not shown) provided in the grip portion 22, for example. Then, the LED light source of the treatment tool 2 is turned on to start the irradiation of the affected part with ultraviolet rays.

Then, when the ultraviolet irradiation reaches the inputted dose (reaches the set irradiation time), the LED light source is automatically turned off.

The structure of the treatment device 2 will be described in detail below with reference to fig. 2.

As shown in fig. 2, the light irradiation section 21 of the treatment device 2 includes a housing 24 having a light irradiation window 23. An opening is provided at the front end of the case 24, and the light emission window 23 is attached to the opening. The shape of the case 24 may be, for example, a rectangular parallelepiped shape. The light emission window 23 may have a rectangular shape of, for example, 50mm × 50 mm.

The case 24 houses the light source unit 25, the light guide unit 26, the heat sink 27, and the fan 28.

The light source unit 25 includes: a plurality of LEDs (LED light sources) 25a that emit light including ultraviolet rays; and an LED board 25b on which the plurality of LEDs 25a are mounted. The number of the LEDs 25a may be 20 or more, for example.

The LED25a is a UV-LED that emits ultraviolet light having an emission peak at a wavelength in a range of 308nm to 370nm, for example. The ultraviolet rays emitted from the LED25a are therapeutic light for treating skin diseases.

For example, medium-wave ultraviolet rays (wavelength 308nm to 313 nm) are known to be effective light for psoriasis, psoriasis-like, pustulosis palmoplantaris, malignant lymphoma, mycosis polyp, pityriasis licheniform chronic, vitiligo vulgaris, atopic dermatitis, alopecia areata, and the like. Further, for example, long-wavelength ultraviolet rays (wavelength of 340nm to 400 nm) are known to be effective light for cutaneous T-cell lymphoma, mycosis polyp, scleroderma, atopic eczema, and the like.

The LED25a emits ultraviolet rays having a wavelength corresponding to a skin disease to be treated.

The LED substrate 25b is disposed such that the surface on which the LED25a is mounted faces the light emission window 23. The LED substrate 25b uses a metal for a substrate base or a core in order to efficiently conduct heat of the mounted element (LED 25 a) to the heat sink 27. Here, as the metal used for the substrate base or the core, aluminum, copper or the like having high thermal conductivity can be used.

The light guide unit 26 is a light guide path for guiding the light emitted from the LED25a to the light emission window 23, and is configured by the case 24 in the section from the LED25a to the light emission window 23. The inner peripheral surface of the case 24 constituting the light guide 26 may be formed of a reflector. In this case, the light guide portion 26 guides the light emitted from the LED25a and the light reflected by the inner peripheral surface of the reflector to the light radiation window 23.

The light guide 26 is used to keep a distance from the LED25a to the irradiated portion (affected part) constant or substantially constant. When the light radiation window 23 is always brought into contact with the affected part during the ultraviolet irradiation, the distance from the LED25a to the irradiated part can be always made constant, and the illuminance uniformity of the ultraviolet light irradiated to the irradiated region (treatment region) can be always set to predetermined values.

In the light guide portion 26, a wavelength selective filter may be disposed between the LED25a and the light emission window 23, and the wavelength selective filter may transmit only light in a desired wavelength range among light emitted from the LED25a.

As described above, the UV-LED used as the light source of the ultraviolet therapeutic apparatus 1 of the present embodiment generates heat when turned on. If heat generated from the UV-LED is not properly dissipated, a phenomenon such as wavelength conversion (wavelength lengthening) of the emitted light or thermal damage of the LED element occurs. Therefore, when the UV-LED is used, a heat dissipation portion is required to actively dissipate heat.

In the present embodiment, the light irradiation section 21 includes a heat sink 27 and a fan 28 as a heat dissipation section for dissipating heat from the LEDs 25a.

The heat sink 27 includes a base 27a and fins 27b. The base 27a is attached to the surface of the LED board 25b opposite to the surface on which the LED25a is attached. The fins 27b are formed of a plurality of fins attached to the base 27 a. The heat sink 27 (the base 27a and the fins 27 b) is made of aluminum, copper, or the like having high thermal conductivity. The fin may have any shape.

In the present embodiment, the fins 27b are plate-like (flat plate-like) members. In a state where the treatment device 2 is arranged in the orientation shown in fig. 2, the fins 27b are arranged vertically (in the vertical direction on the paper in fig. 2), and the fins 27b are arranged in parallel with each other.

The fan 28 is used for the purpose of improving the heat radiation performance of the heat sink 27 by sending cooling air to the fins 27b of the heat sink 27. In the present embodiment, the fan 28 is an axial fan. The fan 28 is provided such that the suction surface is opposite to the surface of the heat sink 27 on which the fins 27b are provided, on the side of the heat sink 27 opposite to the LED substrate 25 b. In this way, the fan 28 is disposed so that the direction of wind intake and the direction of wind discharge coincide with or substantially coincide with the direction of arrangement (the left-right direction in fig. 2) of the light emission window 23, the LED board 25b, and the heat sink 27.

Further, an intake port 24a for taking cooling air into the casing 24 is provided at a position corresponding to the heat sink 27 on a side surface (a surface intersecting the light emission window 23) of the casing 24. Specifically, the air inlets 24a are provided at positions facing the fins 27b of the heat sink 27 on the surfaces of the casing 24 facing in the vertical direction of the paper.

The opening shape of the intake port 24a is arbitrary, such as a slit or an array of holes. In order to fully utilize the characteristics of the fan 28, the area of the opening of the air inlet 24a is preferably equal to or larger than the area of the suction surface of the fan 28.

Further, an exhaust port 24b for exhausting the cooling air sent by the fan 28 to the outside of the casing 24 is provided on the back surface (the surface on the opposite side to the surface on which the light emission window 23 is provided) of the casing 24. Specifically, the exhaust port 24b is provided at a position facing the fins 27b of the heat sink 27 (a position facing the discharge surface of the fan 28 as an axial fan) on the back surface of the casing 24.

The opening shape of the exhaust port 24b is arbitrary, such as a slit or an array of holes. In order to fully exhibit the characteristics of the fan 28, the area of the opening of the exhaust port 24b is preferably equal to or larger than the area of the discharge surface of the fan 28.

When the operator holds the grip 22 of the treatment tool 2, brings the light emission window 23 into contact with or close to the affected part, and presses a switch (not shown) provided in the grip 22, for example, the LED25a is turned on to start irradiation of ultraviolet rays to the affected part. At this time, the fans 28 are simultaneously operated. Then, as shown by arrows in fig. 2, the cooling air is taken into the casing 24 from the vertical direction through the air inlet 24a. The fan 28 may be operated all the time after the main power supply of the ultraviolet therapy apparatus 1 is turned on.

When the LED25a is turned on, the LED25a generates heat, and the heat is transferred to the heat sink 27 via the LED substrate 25b, thereby increasing the temperature of the heat sink 27. The cooling air taken into the housing 24 from the air inlet 24a passes between the fins 27b of the heat sink 27 whose temperature has increased, and cools the heat sink 27.

As shown in fig. 3 a, which is a view of the heat sink 27 viewed from the back side (the side opposite to the LED substrate 25 b), since the fins 27b are arranged vertically (in the vertical direction on the paper surface) and the fins 27b are arranged in parallel with each other, the cooling air taken into the case 24 from the vertical direction through the air inlets 24a provided on the upper and lower surfaces of the case 24 flows along the plate longitudinal direction (plate extending direction) of the fins 27b. Therefore, the heat generated from the LED25a can be efficiently dissipated through the heat sink 27 by the cooling air, and the LED25a is cooled to a temperature not exceeding the allowable temperature range.

The cooling air introduced from the upper and lower sides of the heat sink 27 and flowing through the flow paths between the fins 27b is taken in by the fans 28 disposed on the fins 27b side of the heat sink 27, and becomes exhaust air as shown in fig. 3 (b), and flows to the side opposite to the base 27a of the heat sink 27.

The exhaust air that has cooled the heat sink 27 and increased in temperature is discharged from the exhaust port 24b to the outside of the case 24 through the fan 28 as shown by the arrows in fig. 2.

The fan 28 is preferably operated all the time when the LED25a is lit. This can appropriately suppress the temperature of the LED element from exceeding the allowable temperature range.

When the operation is finished and the LED25a is turned off, the fan 28 is stopped and the exhaust is also stopped.

Even after the LEDs 25a are turned off, the fan 28 may be operated for a while (for example, until the temperature of the LEDs 25a reaches the room temperature), and the cooling may be continued.

Returning to fig. 2, the grip portion 22 extends from a position on the side surface of the housing 24 (the surface intersecting the light emission window 23) rearward (the side opposite to the light emission window 23) of the position where the heat sink 27 is disposed. Specifically, the grip portion 22 extends in a direction orthogonal to the arrangement direction (the left-right direction in fig. 2) of the light emission window 23, the LED substrate 25b, and the heat sink 27. The grip portion 22 may be a linear rod-shaped member (grip rod) as shown in fig. 2.

The extending direction of the grip portion 22 is not limited to the orthogonal direction shown in fig. 2, as long as it intersects the arrangement direction (the left-right direction in fig. 2) of the light emission window 23, the LED substrate 25b, and the heat sink 27. That is, the grip 22 may be provided to extend obliquely from the side surface of the housing 24.

In the present embodiment, the fin 27b of the heat sink 27 has a plate shape (flat plate shape) as described above, but the fin 27b may have a pin shape as shown in fig. 4 (a) and 4 (b), for example. The pin shape is not limited to the shape shown in fig. 4 (a) and 4 (b). In this case, since the fins 27b are disposed isotropically, the direction of the wind supplied to the heat sink 27 may be the vertical direction or the horizontal direction.

In other words, in this case, the air inlet 24a may be provided on the left and right side surfaces of the housing 24, as in the treatment device 2A shown in fig. 5.

Even in the case of using the heat sink 27 having the plate-like fins 27b shown in fig. 3 (a) and 3 (b), the fins 27b may be disposed horizontally and the fins 27b may be arranged in parallel with each other, and the air inlet 24a may be provided on the left and right side surfaces of the case 24 as shown in fig. 5.

In the present embodiment, the case where the air inlets 24a are provided on the two opposing surfaces of the case 24 has been described, but in the case where the heat sink 27 having the pin-shaped fins 27b shown in fig. 4 (a) and 4 (b) is used, the air inlets 24a may be provided on the four surfaces of the case 24, which are the upper surface, the lower surface, the left surface, and the right surface.

In the case of air cooling, the plate-shaped fins generally have a smaller pressure loss than the pin-shaped fins, and the fins 27b of the heat sink 27 are preferably plate-shaped because the air can easily move between the fins.

Further, the intake port 24a need not be formed on the opposing surfaces of the housing 24. For example, as in the treatment device 2B shown in fig. 6, the air inlet 24a may be formed only in the upper surface of the housing 24. As shown in fig. 6, the temperature of the LED substrate 25b is higher. Therefore, the intake port 24a only needs to be formed at least on the upper surface of the housing 24.

This makes it possible to preferentially cool the upper side that tends to become high in temperature. Further, the air inlet 24a is not accidentally blocked by a hand holding the grip portion 22.

As described above, the treatment device 2 of the ultraviolet treatment apparatus 1 according to the present embodiment includes: a light irradiation unit 21 that emits light including ultraviolet rays; and a grip 22 connected to the light irradiation unit 21 and gripped by an operator. The light irradiation unit 21 includes: a housing 24 having a light emission window 23; a light source unit 25 (LED 25a, LED substrate 25 b); a light guide part 26; a heat sink 27; a fan (blower) 28. The light radiation window 23, the LED substrate 25b, the heat sink 27, and the fan 28 are arranged linearly in this order as shown in fig. 2.

The treatment device 2 of the ultraviolet treatment apparatus 1 according to the present embodiment includes a heat radiation system including a heat radiator 27 and a fan 28 in the casing 24. The heat sink 27 is used to efficiently dissipate heat generated by the LEDs 25a when turned on, and the fan 28 is used to improve the heat dissipation efficiency of the heat sink 27. The suction and exhaust by the fan 28 are performed through an air inlet 24a and an air outlet 24b provided in the casing 24 of the treatment device 2.

In the treatment device 2 of the ultraviolet treatment apparatus 1 according to the present embodiment, an intake port 24a for taking cooling air into the casing 24 is provided at a position corresponding to the heat sink 27 on the side surface of the casing 24 of the treatment device 2. This makes it possible to blow the cooling air taken into the case 24 through the air inlet 24a to the radiator 27 first, and thus, the radiator 27 can be cooled efficiently.

Therefore, in the ultraviolet therapeutic apparatus 1 using the LED25a as a light source, the heat radiation performance can be further improved.

Further, an exhaust port 24b for exhausting the cooling air sent from the fan 28 to the outside of the casing 24 is provided on the back surface of the casing 24 of the treatment device 2. In this way, since the exhaust port 24b is provided on the surface of the casing 24 of the treatment device 2 opposite to the light emission window 23, the exhaust wind from the exhaust port 24b does not blow on the patient.

Further, the operator does not receive the exhaust air unless the operator is positioned on the same straight line with the affected part through the treatment tool 2. The operator grips the grip 22 attached to the side surface of the treatment device 2 to operate the treatment device 2. When such a method of using the treatment device 2 is considered, the patient and the operator are rarely positioned on a straight line with the treatment device 2 therebetween, and the operator is positioned substantially on the side surface side of the treatment device 2. Further, even if the patient and the operator are located on a straight line with the treatment device 2 interposed therebetween, the operator can easily avoid the exhaust air.

In the present embodiment, the fan 28 may be an axial fan disposed so that the air intake side faces the radiator 27.

The axial flow fan generally has a weak wind speed on the suction side, and has a characteristic that the wind speed distribution expands at a wide angle from a short distance. Therefore, if the position is not in the very vicinity of the air inlet 25a, the wind cannot be felt. That is, it is difficult for the operator and the patient to feel the wind generated by the intake air near the intake port 25a. Therefore, if an axial fan is used as the fan 28, there is no problem even if the air inlet 25a is provided on a surface facing the operator, such as a side surface of the treatment device 2.

As described above, in the present embodiment, it is possible to avoid the situation where the wind generated in the vicinity of the air intake/exhaust port directly hits the operator (user) or the patient, and usability can be improved. In particular, although the exhaust air may have a high temperature and may cause discomfort if it is directly blown, the above discomfort can be reduced because the structure in which the exhaust air is sucked and hardly blown to the operator and the patient can be realized.

The treatment device 2 of the ultraviolet treatment apparatus 1 according to the present embodiment may include a grip portion 22 extending from a side surface of the housing 24 and having an extending direction intersecting the arrangement direction of the light radiation window 23, the LED substrate 25b, and the heat sink 27. The grip portion 22 is configured not to be aligned with the light emission window 23, the LED substrate 25b, and the heat sink 27, so that the operator can stably hold the treatment tool 2 even in a state where the light emission window 23 is directed to the front surface, for example. Therefore, operability when a person (for example, a doctor or a nurse) different from the patient operates the treatment tool 2 can be improved.

The grip portion 22 may be extended from a position behind (opposite to the light emission window 23) the position where the heat sink 27 is arranged on the side surface of the housing 24.

The light source unit 25 includes a plurality of LEDs (UV-LEDs) 25a, and thus generates a large amount of heat. Therefore, in order to improve the heat radiation efficiency, the surface area of the fins of the heat sink 27 needs to be increased, and the heat sink 27 is slightly large. The heat sink 27 is made of a metal having good thermal conductivity such as aluminum or copper, and is relatively large in size and therefore heavy. The weight of the heat sink 27 is a large part of the weight of the treatment appliance 2.

Further, a power supply system such as the power supply unit 43 or the LED drive unit 45 is mounted on the main body 4 separate from the treatment device 2, and the LED drive unit 45 supplies power to the LEDs 25a via the connection line 6 (power supply line 6 a). Since the power supply system is provided outside the treatment device 2 in this way, the heaviest component of the treatment device 2 is the heat sink 27.

Therefore, by extending the grip portion 22 from the side surface of the housing 24 to the rear of the position where the heat sink 27 is disposed, the operator can hold the treatment tool 2 to the rear of the center of gravity with the light irradiation portion 21 facing upward. Therefore, when the operator brings the treatment tool 2 into contact with the affected part with the light radiation window 23 directed downward, the weight of the treatment tool 2 can be easily supported on the affected part. That is, the weight of the heat sink 27 can improve the ease of pressing the light irradiation section 21. Therefore, the treatment device 2 can be more stably abutted against the affected part.

(other embodiments)

In the above embodiment, the case where the grip portion 22 extends from the side surface of the case 24 to the rear of the position where the heat sink 27 is arranged has been described. However, the grip portion 22 may extend from the position where the heat sink 27 is disposed.

In this case, the operator can appropriately maintain the position close to the center of gravity of the treatment tool 2. That is, when the operator grips the grip portion 22 with the light irradiation portion 21 facing upward, the weight of the heat sink 27 acts on the grip portion 22, and the operator can grip the treatment device 2 stably. Therefore, the operator can stably bring the light irradiation section 21 into close contact with the affected area.

The ultraviolet therapeutic apparatus of the present invention is not limited to the above-described embodiments, and various modifications may be made.

For example, the shape of the housing 21 may be any shape such as a cylindrical shape. Further, the grip portion 22 may be provided with a step, a projection, or the like for the operator to stably grip the grip portion 22.

In the present embodiment, the explanation is made on the case where the operator is different from the patient, but the patient may hold the treatment tool and operate the treatment tool.

1 \8230, an ultraviolet therapeutic apparatus 2 \8230, a therapeutic apparatus 4 \8230, a main body portion 21 \8230, a light irradiation portion 22 \8230, a holding portion 23 \8230, a light radiation window 24 \8230, a housing 25a \8230, an LED25 b \8230, an LED substrate 26 \8230, a light guide portion 27 \8230, a radiator 27a \8230, a base body 27b \8230, and a fin 28 \8230.

Claims (9)

1. An ultraviolet therapeutic apparatus, comprising:

a housing having a light emission window that emits light including ultraviolet rays;

an LED substrate provided in the housing so as to face the light emission window, and having an LED light source mounted thereon that emits light including the ultraviolet rays toward the light emission window;

a heat sink which is mounted on a surface of the LED substrate on a side opposite to the mounting surface of the LED light source in the housing and which dissipates heat of the LED substrate;

an air inlet provided at a position corresponding to the heat sink on a surface of the housing intersecting the light emission window, the air inlet taking cooling air into the housing; and

and a blower disposed in the housing on a side of the heat sink opposite to the LED substrate.

2. The ultraviolet therapy apparatus according to claim 1,

the ultraviolet therapeutic apparatus includes an exhaust port provided in a surface of the housing opposite to a surface thereof on which the light radiation window is provided, the exhaust port discharging the cooling air sent from the blower to the outside of the housing.

3. The ultraviolet treatment apparatus of claim 1 or 2,

the ultraviolet treatment apparatus further includes a grip portion connected to a surface of the housing intersecting the light emission window and gripped by an operator.

4. The ultraviolet therapy apparatus according to claim 3,

the grip portion extends from a position where the heat sink is disposed on a surface of the housing intersecting the light emission window or a position on a side opposite to the light emission window with respect to the position where the heat sink is disposed, and an extending direction of the grip portion intersects an arrangement direction of the light emission window, the LED substrate, and the heat sink.

5. The ultraviolet treatment apparatus of claim 3,

the air inlet is provided at least on a surface of the housing on a side opposite to a surface to which the grip portion is coupled, the surface intersecting the light emission window.

6. The ultraviolet treatment apparatus of claim 1 or 2,

the air inlet is provided on a surface of the housing intersecting the light emission window so as to face the light emission window with the heat sink interposed therebetween.

7. The ultraviolet treatment apparatus of claim 6,

the heat sink is provided with a plurality of plate-like fins,

the air inlet is provided on a surface of the housing intersecting the light emission window so as to face the extending direction of the fin.

8. The ultraviolet therapy apparatus according to claim 1,

the blower is an axial fan.

9. The ultraviolet treatment apparatus of claim 8,

the axial fan has a suction surface arranged opposite to the heat sink,

an air outlet is provided in a surface of the casing opposite to the surface provided with the light emission window, and the air outlet discharges the cooling air ejected from the ejection surface of the axial flow fan to the outside of the casing.

Images