JP2002360605A - Medical light irradiator - Google Patents

Abstract

(57) [Problem] To provide a medical light irradiator capable of irradiating light having a large amount of light per unit area using a light emitting element. SOLUTION: A light beam output portion in which a plurality of light emitting elements 22 for irradiating light suitable for curing a photopolymerizable resin material is arranged, and light from the light beam output portion is incident on an incident surface, and the incident surface is provided. And a light guide unit 40 for guiding the light incident on the light emitting surface to an emission surface smaller than the incident surface and emitting the light from the emission surface.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a medical light irradiator, and more particularly to a light illuminator used for home bleaching in a dental office or at home.

[0002]

2. Description of the Related Art Medical lighting, specifically, a photopolymerizer,
Lighting of instruments (e.g. oral lighting of dental turbines, motors, scalers) and unit lighting requires the concentration of light in a small area, and in this regard, it is required to illuminate a wide area brightly. Different from general lighting in other fields.

[0003] In general, a halogen lamp or a xenon lamp has been used for an illuminating device of a medical photopolymerizer for irradiating light for curing a photopolymerizable resin material, for example, a dental resin. It has also been proposed to use an LED (light emitting diode) or a semiconductor laser having features such as a long power consumption and low power consumption.

For example, JP-A-7-240536 (Japanese Patent No. 2979722) and JP-A-2000-27
Japanese Patent No. 1155 discloses that light from a plurality of LED elements is collected,
An irradiating photopolymerizer is disclosed. JP-A-9-187
No. 825 discloses an irradiation device in which a plurality of light emitting diodes are arranged in one capsule. JP 2
Japanese Patent Application Publication No. 000-316881 discloses a medical light irradiator in which a light emitting element is mounted on the tip of a support and directly irradiates a photopolymerizable resin material. US Pat. No. 6,102,696
Japanese Patent Application Laid-Open Publication No. H11-163,086 discloses a medical light irradiator in which a plurality of LED elements are arranged on a curved surface and condensed.

[0005] Illumination devices for medical instruments include:
Generally, a halogen lamp or a xenon lamp is used. In general, light is guided to the tip of instruments by a light guide such as a fiber and illuminated.

For example, Japanese Patent Application Laid-Open No. 10-337292 discloses a dental handpiece in which a visible light LED is incorporated in a turbine head to illuminate a treatment site. However, no specific configuration of the visible light LED is described. Japanese Patent Application Laid-Open No. H10-137263 discloses a dental treatment apparatus in which a concave portion is provided in a cathode terminal, an LED chip is disposed on the bottom surface, and a phosphor layer is formed thereon to emit white light.

The lighting of the dental unit is bright,
It has a natural color temperature, is small, lightweight, inexpensive, and needs to be illuminated with as little shadow as possible. Conventionally, lamps have been used.

[0008] In addition, there are the following techniques using LEDs for lighting.

For example, Japanese Patent Application Laid-Open No. H11-202164 discloses that a large number of LEDs are arranged on a substrate, and one LED is provided for each LED.
A light source module is disclosed in which optical fibers are connected in such a manner that the optical fibers are bundled and pulled out. The publication suggests using bare chips instead of LEDs. JP-A-11-162232 discloses an LED lighting module in which a plurality of LED chips are bare-chip mounted on a substrate. This LED lighting module is an alternative to the conventional fluorescent lamp, and is for illuminating a wide range.

[0010]

In the illumination of medical equipment, it is required to concentrate light in a narrow area.
It is necessary that a lighting device mounted on an instrument or a light polymerization device has a high output. On the other hand, for example, an illuminating device for performing a delicate operation in the oral cavity or the like is required to be small, light, and compact. In particular,
When the illuminating device itself is mounted on a portion that enters the oral cavity or the like, the demand for downsizing is very large. In addition, when the illumination device itself is mounted on a portion that enters the oral cavity or the like, it is required that it not generate heat, that it can be disinfected, and that it has water resistance, in addition to its shape.

In order to meet these demands, it has been proposed to use an LED or a semiconductor laser. However, currently available light emitting elements (eg, an LED element and a semiconductor laser element) are provided in a package with an LED chip or a semiconductor laser chip. And the output itself is small. In addition, as shown in the characteristic diagram of FIG. 1, even with an LED element having a narrow directivity, light spreads to some extent, so that the amount of light per unit area is further reduced.

Accordingly, a technical problem to be solved by the present invention is to provide a medical light irradiator capable of irradiating light having a large amount of light per unit area using a light emitting element.

[0013]

SUMMARY OF THE INVENTION The present invention provides a medical light irradiator having the following structure to solve the above technical problems.

[0014] The medical light irradiator includes a light beam output unit and a light guide unit. A plurality of light emitting elements for irradiating light suitable for curing the photopolymerizable resin material are arranged in the light beam output unit. The light guide unit receives the light from the light beam output unit on an incident surface, guides the light incident on the incident surface to an exit surface smaller than the incident surface, and emits the light from the exit surface.

In the above configuration, the light emitting element of the light beam output section is, for example, an LED element or a semiconductor laser element.

According to the above configuration, even a light-emitting element having a small output can be collected and a light guide portion having a light-collecting property such as a tapered light guide can be used to reduce the light irradiation range. Thus, high-output light with a large light quantity per unit area can be irradiated.

Further, the present invention provides a medical light irradiator having the following configuration to solve the above technical problems.

The medical light irradiator has a light output section and a light guide section at its tip. A plurality of light emitting elements for irradiating light suitable for curing the photopolymerizable resin material are arranged in the light beam output unit. The light guide unit receives light from the light beam output unit on an incident surface, guides the light incident on the incident surface to an output surface, and emits the light from the output surface.

In the above configuration, the light emitting element of the light beam output unit is, for example, an LED element or a semiconductor laser element.

According to the above configuration, even a plurality of light-emitting elements having a small output are collected and irradiated with substantially parallel light from the exit surface of the light guide section so that the light from the light-emitting elements is prevented from spreading. It is possible to irradiate high output light with high light intensity and a large amount of light per unit area. In addition, by providing a light output unit and a light guide unit at the tip of the medical light irradiator closest to the part where light is to be irradiated, the light transmission path is shortened to reduce transmission loss, and light utilization efficiency is improved. Can be increased.

Preferably, the light guide has a light exit surface smaller than the light entrance surface.

According to the above configuration, the light can be condensed by the light guide portion, and the amount of light per unit area can be further increased.

The present invention also provides a medical light irradiator having the following configuration in order to solve the above technical problems.

The medical light irradiator is provided at its tip with a light beam output section and a narrow directivity conversion lens or condenser lens. A plurality of light emitting elements for irradiating light suitable for curing the photopolymerizable resin material are arranged in the light beam output unit. The narrow directivity conversion lens narrows the directivity of light from the light beam output unit. The condensing lens condenses the light from the light beam output unit and directly emits the light to the outside.

According to the above configuration, since the light from the light emitting element is condensed by the narrow directivity conversion lens or the condensing lens and emitted, the amount of light per unit area can be increased. The light is directly emitted from the narrow directivity conversion lens or the condenser lens to the outside, and a simple configuration without light guide means such as a light guide can be achieved. In addition, by providing a light output unit and a narrow directivity conversion lens or a condensing lens at the tip of the medical light irradiator closest to the part to be irradiated with light, the light transmission path is shortened to reduce transmission loss. Thus, light use efficiency can be improved.

Preferably, a narrow directivity conversion lens is provided between the light beam output section and the condenser lens to narrow the directivity of light from each of the light emitting elements.

According to the above configuration, the light from the light emitting element is
After the directivity is narrowed by the narrow directivity conversion lens, the light enters the condenser lens. As a result, the range in which the light emitted from the condenser lens is collected is reduced, and the amount of light per unit area can be further increased. Of course, it is also possible to directly irradiate the light from the light emitting element by omitting the condenser lens and using only the narrow directivity conversion lens.

Further, the present invention provides a medical light irradiator having the following configuration to solve the above technical problems.

The medical light irradiator includes one or more light emitting elements for irradiating light suitable for curing the photopolymerizable resin material, and cooling means for cooling the light emitting elements.

For example, in a light emitting element through which a large current flows, the heat generated by the light emitting element cannot be ignored. According to the above configuration, by cooling the light emitting element by the cooling means, it is possible to prevent a problem from occurring due to heat generation of the light emitting element.

Preferably, the light beam output section is supported by a distal end of an elongated support. The output direction of the light from the light beam output unit is different from the major axis direction of the support.

According to the above configuration, a so-called mirror-type medical light irradiator having an angle with respect to the long axis direction of the support can be formed. For example, a deep portion of a narrow space in the oral cavity can be formed. In addition, light can be easily irradiated.

Preferably, the light beam output section is formed in a flat shape, and outputs light from one main surface thereof.

In the above configuration, the light beam output section is formed in a flat shape by, for example, arranging a plurality of light emitting elements on a substrate, and outputs light from a main surface having a relatively large area. It is suitable as a configuration for efficiently utilizing the light emitted from the light emitting element to reduce the size and increase the output. Further, since the heat radiation area is large, the light emitting element can be efficiently cooled. In addition, when used in the oral cavity, if the light beam output section is flat, it can be easily arranged and used in a narrow space between teeth and cheeks.

Preferably, a tip member is connected to the tip of the elongated support. The light beam output section is arranged in the tip member.

According to the above configuration, the medical light irradiator has a shape like a dental mirror, and a light beam output section is provided in a portion corresponding to the mirror. According to the above configuration,
The irradiation site or its vicinity is easy to see and easy to use.

[0037] Preferably, the light beam output section is supported by a distal end of an elongated support. The support includes a flexible portion or a mechanical portion that can be bent and can maintain a bent state.

In the above configuration, if the angle of the light beam output portion with respect to the support is appropriately set, light can be emitted at an optimum angle according to the use site such as inside, outside, and back of the tooth. Further, it is not necessary to prepare a plurality of objects having different angles, which is versatile and convenient.

Preferably, the light guide is detachable.

According to the above configuration, since the light guide can be removed, it is easy to disinfect.

More preferably, a plurality of the light guides having different shapes can be mounted.

According to the above configuration, the direction and position of light irradiation can be switched by exchanging the light guide according to the symptom or site, which is convenient.

Preferably, the light emitting elements are arranged at an angle so as to emit light toward a common point.
The incident surface of the light guide is disposed at the common point.

In the above configuration, the light emitting element may be disposed on a curved surface or may be disposed on a plane so as to be inclined as appropriate to provide an angle. By condensing the light from the light emitting element, the incident surface of the light guide can be reduced,
A thinner light guide can be used.

Preferably, a cooling means for cooling the light emitting element is provided.

Generally, a light emitting element (eg, an LED element)
Is characterized by not generating heat. However, if the light emitting elements are integrated, a considerable amount of heat is generated and cannot be ignored. According to the above configuration, overheating of the light emitting element can be prevented by the cooling unit. Therefore, the medical light irradiator does not need to be used with care for the high temperature part, and is easy to handle. For example, even when the light output unit of the medical light irradiator is arranged in the oral cavity of a patient, there is no risk of burns or the like.

The cooling means can be constructed in various modes. For example, a fan, a Peltier element, a heat sink, or the like can be used as a cooling unit to remove heat from the light emitting element. Further, the housing may be made of a material having a high thermal conductivity such as a metal to enhance the heat radiation effect. In this case, if a heat sink is used for the housing,
The heat radiation effect can be enhanced.

Preferably, the cooling means is incorporated in the light output section.

According to the above configuration, by arranging the cooling means in the vicinity of the light emitting element, it is possible to efficiently cool the device, and it is easy to reduce the size of the device.

Preferably, the light-emitting elements include light-emitting elements having different output light wavelengths.

According to the above-described structure, the light-emitting element having a wavelength capable of curing each material is mixed with the light-emitting element of the light-polymerization resin material obtained by mixing a plurality of materials having different curing wavelengths. The material can be completely cured.

Preferably, the light emitting element is pulse-driven.

According to the above configuration, the pulse driving can easily control the curing speed of the photopolymerizable resin material by the magnitude and the period of the pulse. For example, it is possible to irradiate the photopolymerizable resin material with high output light instantaneously to obtain a deep polymerization depth. Further, in the case where the photopolymer resin material contracts when irradiated with a large amount of light instantaneously, the amount of light is gradually increased by pulse driving to prevent contraction due to a sudden change in the amount of light. When a lamp is used, pulse driving is not practical in terms of life and response, but it is practical in a light emitting element.

Preferably, a control section for controlling light emission of the light emitting element and a power supply battery for supplying power to the light emitting element and the control section are provided in the housing.

According to the above configuration, there is no need to supply or control power from the outside, so that the medical light irradiator can be a cordless type.

[0056]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A medical light irradiator according to each embodiment of the present invention will be described below with reference to FIGS.

First, the medical light irradiator (gun type photopolymerizer) according to the first embodiment of the present invention will be described with reference to FIGS. 2, 3 and 7.

FIG. 2 is a sectional view of the light emitting module 10. The light emitting module 10 includes a plurality of LEDs on a substrate 20.
The elements 22 are arranged collectively. Each LED element 22
In addition to being small and high performance,
Use the one with small spread of light and narrow directivity. The light from the light emitting module 10 spreads in proportion to the directivity of each LED element 22, for example, as indicated by the arrow 11.

For this purpose, for example, as in the light emitting module 12 shown in FIG. 3, an LED element 24 which is focused by a lens (not shown) housed in a package to improve directivity may be used.

When the amount of light per unit area is insufficient, a large amount of light may be momentarily obtained by applying a large current by pulse driving. Thereby, for example, in photopolymerization of a dental resin material, a deep polymerization depth can be obtained.

The light emitting modules 10 and 12 can be suitably used for a gun type light irradiator.

FIG. 7 shows an example of a gun-type medical photopolymerizer 30 having the light emitting module 10. Photopolymerizer 30
Is particularly suitable for dental use. Light emitting module 10
The LED element 22 emits light (for example, blue light) having a wavelength suitable for curing a photopolymerizable resin material (for example, dental resin). For a photopolymer resin material in which a plurality of materials having different curing wavelengths are mixed, LED elements 22 having different emission wavelengths may be used, and each material may be cured by the LED element 22 having a different wavelength.

The light guide 34 is attached to the end of a substantially L-shaped housing 32 of the medical light polymerization device 30.
In the housing 32, the light emitting module 10 is disposed so as to face one end face of the light guide 34, and light is emitted from the other end face 35 of the light guide 34. The medical light polymerization device 30 is a cordless type, and a control circuit board 38 and a power supply battery 39 are housed in a housing 32. When an operation switch 36 protruding from the housing 32 is pressed, the LED of the light emitting module 10 is pressed.
The element 22 emits light.

The light guide 34 which is likely to come into contact with the teeth can be disinfected by removing it from the medical photopolymerization unit 30. In addition, various light guides 34 having different curved shapes, sizes, and the like can be mounted according to the purpose of use.

In order to further improve the light condensing characteristics and efficiently use light, the light emitting module 10 and the light guide 3
4, a lens may be provided. In this case, the lens may be made detachable so that it can be replaced with a lens having an appropriate light-collecting characteristic, for example, corresponding to the light guide 34 to be mounted.

Alternatively, a plurality of LEDs on a curved substrate
The elements may be arranged, and light may be emitted from the individual LED elements toward a common point, and the light guide entrance surface may be arranged at the common point. Alternatively, LE on a plane substrate with an angle
It is also possible to arrange D elements, irradiate light from individual LED elements to a common point, and arrange the light guide incident surface at the common point.

Next, a medical illumination device (mirror type photopolymerizer) according to a second embodiment of the present invention will be described with reference to FIGS.
This will be described with reference to FIGS.

FIG. 4 is a sectional view of the light emitting module 14. In the light emitting module 14, a substrate 20, an LED element 22, and a resin mold 26 are arranged in a housing 15. In the resin mold 26, a portion 27 facing each LED element 22 is formed in an appropriate shape such as a concave lens shape or a convex lens shape, so that light from the LED element 22 is collected. For example, the light from the LED element 22 is converted into parallel light. A condenser lens 40 is arranged to face the resin mold 26, and condenses light as indicated by an arrow 41.

The condenser lens 40 is held by a holding frame 42. An outer screw 42a is provided on the holding frame 42, and is screwed to an inner screw 15a provided on the housing 15. As a result, the condenser lens 40 that may come into contact with the teeth or the like can be removed and disinfected, or can be replaced with one having an appropriate condenser characteristic.

FIG. 5 is a sectional view of a light emitting module 16 according to a modification. The light emitting module 16 is a light emitting module 1
4, and a substrate 20 is provided in the housing 17.
And the LED element 22 and the resin mold 26 are arranged,
In the resin mold 26, a portion 27 facing each LED element 22 has a shape for condensing light from the LED element 22.

However, unlike the light emitting module 14, the light emitting module 16 has a tapered light guide 44 disposed opposite the resin mold 26. The tapered light guide 44 has a larger incidence surface 44a facing the resin mold 32 than the emission surface 44b, and is formed by bundling a plurality of tapered optical fibers, for example. If the tapered light guide 44 is attached, high-intensity light can be intensively applied to a narrow range. For example, the entrance surface 44a has a diameter of 15 mm, and the exit surface 44b has a diameter of 8 m.
In the case of the tapered light guide 44 having a length of 10 mm and a length of 10 mm, the amount of light per unit volume can be expected to be about three times.

The tapered light guide 44 is held by a holding frame 46, similarly to the condenser lens 40. Holding frame 46
Is provided with an outer screw 46a, and is screwed to an inner screw 17a provided in the housing 17. Thus, the tapered light guide 44 which may come into contact with the teeth or the like can be removed and disinfected, or replaced with a light guide having an appropriate light-collecting property.

FIG. 6 shows a light emitting module 18 according to another modification.
FIG. The light emitting module 18 is configured substantially in the same manner as the light emitting module 16, and a substrate 20, an LED element 22, and a resin mold 26 are arranged in a housing 19. Further, a tapered light guide 44 is attached to the housing 19 via a holding frame 46 so as to face the resin mold 26.

However, unlike the light emitting module 16, the fan 50 is housed in the housing 19 and blows air to the substrate 20. When the heat generated by the LED elements 22 cannot be ignored, for example, when many LED elements 22 are integrated or when the output of the LED elements 22 is large, the heat generated by the LED elements 22 can be efficiently released.

The light emitting modules 14, 16, and 18 having the condenser lens 40 and the tapered light guide 44 can narrow the directivity of light, so that they can be suitably used for a mirror type light irradiator. . Of course, it can also be suitably used for a guy type light irradiator.

FIG. 8 shows an example of a mirror-type dental light polymerization device 70 having the light emitting module 16. The light emitting module 16 is supported by one end 75 of a long and thin support member 74. The other end of the support 74 is fixed to a grip 72 for gripping by hand. A power cord 78 for supplying power to the light emitting module 16 is connected to the grip 72. If the light emitting module 16 is flat, the light emitting module 16 can be easily disposed in a gap in an oral cavity or the like, which is convenient.

The support 74 is provided with a flexible portion 76. The flexible portion 76 has a degree of flexibility that can be bent by hand and can maintain the bent state, as indicated by a chain line. The flexible portion 76 is configured using a material having the above plasticity and flexibility as described above, even if the flexible portion 76 is a component such as an arm of a desk lamp in which a plurality of components are connected by an appropriate pressing force. May be. By appropriately bending the flexible portion 76, it is possible to irradiate light in a desired direction while gripping the grip portion 76 at an angle that facilitates gripping.

As described above, high output light can be emitted by using a plurality of LED elements.

The present invention is not limited to the above embodiment, but can be implemented in various other modes.

For example, the light emitting module 14 shown in FIG. 4 may be used in the gun type photopolymerizer shown in FIG. In this case, the condensed light can be made incident on the light guide 34, so that the condensed light can be increased or a thin light guide 34 can be used.

Further, the light emitting module may be configured to be cooled.

FIG. 9 shows an illumination unit 110 in which the light emitting module 100 and the heat sink 140 are combined.
FIG. 4A is a perspective view of the light emitting module 100 as viewed from the substrate side, and FIG.
(C) is a side view as viewed from the ED element side.
The light emitting module 100 includes the light emitting module 10 described above,
It has the same configuration as 12, 14, and 16. Heat sink 1
Reference numeral 40 is attached to the substrate side of the light emitting module 100, and radiates heat generated in the light emitting module 100. The heat sink 140 includes a plurality of fins 1.
44, 146, and 148. Fins 144, 14
The fins 144, 146, 1
Spaces 143, 145, and 147 are formed between the openings 48 to increase the heat radiation area.

FIG. 10 shows an illumination unit 120 in which a light emitting module 100 and a fan 52 are combined. FIG.
(A) is a perspective view of the light emitting module 100 as viewed from the substrate side, (b) is a front view of the light emitting module 100 as viewed from the direction indicated by the arrow 92 in (a), and (c) is a side view. The fan 52 is mounted on the substrate side of the light emitting module 100. The fan 52 includes a plurality of rotating blades 53 (only three blades are illustrated,
By omitting the other components, the light emitting module 100 is blown with air to cool it.

FIG. 11 shows an example in which a fan 77 is provided in the holding portion 76 of the mirror type dental medical light polymerization device 70 to cool the light emitting element module 100. The support body 74 and the holding portion 76 are formed in a hollow shape, and are provided with air passages 74 a and 76 a. The cooling air from the fan 77 is supplied to the light output portion 7.
2 is sent to the light emitting module 102 attached to the light emitting module 2. Power is supplied to the fan 77 from a power cord 78.

Further, as in the light emitting element module 130 shown in FIG. 12, a reflection plate 156 is provided around the substrate 152, and reflects the light from the LED element 154 toward the center as shown by the arrow 158. Alternatively, the light may not be diffused to the peripheral portion.

[Brief description of the drawings]

FIG. 1 is a directional characteristic diagram of a light emitting element.

FIG. 2 is a front view and a side view of a light beam output unit of the medical light irradiator according to the first embodiment of the present invention.

FIG. 3 is a front view and a side view of a light beam output unit according to a modified example.

FIG. 4 is a front view and a side view of a light beam output unit of a medical light irradiator according to a second embodiment of the present invention.

FIG. 5 is a front view and a side view of a light beam output unit according to a modification.

FIG. 6 is a front view and a side view of a light beam output unit according to another modification.

FIG. 7 is a configuration diagram of a medical light irradiator according to the first embodiment of the present invention.

FIG. 8 is a main part configuration diagram of a medical light irradiator according to a second embodiment of the present invention.

FIG. 9 is a perspective view, a front view, and a side view of a light beam output unit of still another modification.

FIG. 10 is a perspective view of a light beam output unit according to still another modification;
It is a front view and a side view.

FIG. 11 is a configuration diagram of a medical light irradiator of a modified example.

FIG. 12 is a configuration diagram of a light beam output unit of still another modification.

[Explanation of symbols]

Reference Signs List 16 light emitting module (tip member) 20 substrate (light beam output part) 22 LED element (light emitting element) 27 part facing LED element (narrow directivity conversion lens) 30 photopolymerizer (medical light irradiator) 34 light guide ( Light guide unit 38 Control circuit board (Control unit) 39 Power supply battery 40 Condenser lens 44 Light guide (Light guide unit) 50 (Cooling means) 70 Photopolymerizer (Medical light irradiator) 74 Support 76 Flexible part

Claims (17)

[Claims] 1. A light beam output section in which a plurality of light emitting elements for irradiating light suitable for curing a photopolymerizable resin material are arranged; light from the light beam output section is incident on an incident surface; A medical light irradiator, comprising: a light guide section that guides light incident on a surface to an emission surface smaller than the incident surface and emits the light from the emission surface. 2. A light beam output section having a plurality of light emitting elements for irradiating light suitable for curing a photopolymerizable resin material at a tip, and light from the light beam output section is incident on an incident surface. A light guide unit for guiding light incident on the incident surface to the exit surface and emitting the light from the exit surface. 3. The medical light irradiator according to claim 2, wherein the light guide has a light exit surface smaller than the light entrance surface. 4. A light beam output section having a plurality of light emitting elements for irradiating light suitable for curing a photopolymerizable resin material at a tip, and narrowing directivity of light from the light beam output section. A medical light irradiator comprising: a narrow directivity conversion lens; or a condenser lens that collects light from the light beam output unit and directly emits the light to the outside. 5. A narrow directivity conversion lens disposed between the light beam output unit and the condenser lens to narrow the directivity of light from each of the light emitting elements. 4. The medical light irradiator according to 4. 6. A medical device comprising: one or more light emitting elements for irradiating light suitable for curing a photopolymerizable resin material; and cooling means for cooling the light emitting elements. Light irradiator. 7. The light beam output section is supported by a distal end of an elongated support, and an output direction of light from the light beam output section is different from a long axis direction of the support. 7. The medical light irradiator according to any one of 2 to 6. 8. The medical light according to claim 2, wherein the light beam output portion is formed in a flat shape and outputs light from one main surface thereof. Irradiator. 9. The light emitting device according to claim 2, wherein a distal end member is coupled to a distal end portion of the elongated support, and the light beam output section is disposed in the distal end member. Medical light irradiator. 10. The light beam output unit is supported by a distal end of an elongated support, and the support includes a flexible portion or a component that can be bent and can maintain a bent state. The medical light irradiator according to any one of claims 2 to 9, wherein: 11. The medical light irradiator according to claim 2, wherein the light guide is detachable. 12. The medical light irradiator according to claim 11, wherein a plurality of the light guides having different shapes can be mounted. 13. The light-emitting element is disposed at an angle so as to emit light toward a common point, and the incident surface of the light guide is disposed at the common point. The medical light irradiator according to any one of claims 1 to 12, wherein 14. The medical light irradiator according to claim 6, wherein said cooling means is incorporated in a light beam output section in which said light emitting element is arranged. 15. The light emitting device according to claim 1, wherein light emitting devices having different wavelengths of output light are mixed.
The medical light irradiator according to any one of the above. 16. The medical light irradiator according to claim 1, wherein the light emitting element is pulse-driven. 17. The housing according to claim 1, further comprising a control unit for controlling light emission of the light emitting element, and a power supply battery for supplying power to the light emitting element and the control unit in the housing. Medical light irradiator.