JP2022085806A - Sterilizer - Google Patents

Abstract

To make sterilizing effect uniform.SOLUTION: A sterilizer of an embodiment comprises an ultraviolet lamp, a reflection plate, a drive part and a control circuit. The ultraviolet lamp irradiates ultraviolet light. The reflection plate narrowly controls distribution of ultraviolet light emitted from the ultraviolet lamp. The drive part changes an irradiation direction of ultraviolet light by the ultraviolet lamp. The control circuit controls the drive part so as to keep the integrated light quantity of ultraviolet light to a predetermined value by each irradiation direction of ultraviolet light.SELECTED DRAWING: Figure 1

Description

The present invention relates to a sterilizer.

Sterilization by irradiation with ultraviolet rays has been conventionally performed (see, for example, Patent Document 1 and the like). In addition, indoor sterilization is generally performed by installing an ultraviolet lamp on the ceiling or the like and irradiating the area to be sterilized with ultraviolet rays all at once. In addition, the ultraviolet lamp is often provided with a reflector in order to suppress the irradiation of unnecessary ultraviolet rays to the back surface (ceiling side) and increase the irradiation amount of the ultraviolet rays to the irradiation target.

JP-A-2015-157646

However, when the ultraviolet rays from the ultraviolet lamps provided on the ceiling or the like are irradiated all at once in the range to be sterilized, the illuminance of the ultraviolet rays directly under the ultraviolet lamps is high, but the illuminance of the ultraviolet rays decreases as the distance from the ultraviolet lamps increases. Here, the bactericidal effect is proportional to the integrated light amount (product of irradiance and irradiation time) when the wavelength of ultraviolet rays is constant. Therefore, there is a difference in the bactericidal effect between the position directly below the ultraviolet lamp and the position far from the bottom. Therefore, if the bactericidal effect directly under the ultraviolet lamp is appropriate, the bactericidal effect at a position far from the lower part will be insufficient. Further, if the bactericidal effect at a position far from the bottom of the ultraviolet lamp is made appropriate, the accumulated light amount directly under the lamp becomes excessive, which causes deterioration of the ultraviolet rays of the irradiated object.

The present invention has been made in view of the above, and an object of the present invention is to provide a sterilizing apparatus capable of making the sterilizing effect uniform.

In order to solve the above-mentioned problems and achieve the object, the sterilizer according to one aspect of the present invention includes an ultraviolet lamp, a reflector, a drive unit, and a control circuit. The ultraviolet lamp irradiates ultraviolet rays. The reflector narrowly controls the light distribution of ultraviolet rays emitted from the ultraviolet lamp. The driving unit changes the irradiation direction of ultraviolet rays by the ultraviolet lamp. The control circuit controls the drive unit so as to keep the integrated amount of ultraviolet rays at a predetermined value for each irradiation direction of ultraviolet rays.

The sterilizing apparatus according to one aspect of the present invention can make the sterilizing effect uniform.

FIG. 1 is a block diagram showing a configuration example of a sterilizer according to an embodiment. FIG. 2 is a diagram showing an example of changing from the wide light distribution of the sterilizer of the comparative example to the narrow light distribution of the sterilizer of the embodiment. FIG. 3 is a perspective view showing a configuration example of an ultraviolet lamp, a reflector, and a drive unit of the sterilizer. FIG. 4 is a perspective view showing another configuration example of the ultraviolet lamp, the reflector, and the drive unit of the sterilizer. FIG. 5A is a diagram (1) showing an example of the state of the reflector. FIG. 5B is a diagram (2) showing an example of the state of the reflector. FIG. 5C is a diagram (3) showing an example of the state of the reflector. FIG. 5D is a diagram (4) showing an example of the state of the reflector. FIG. 6 is a diagram showing a hardware configuration example of the control circuit. FIG. 7 is a diagram showing a functional configuration example of the control circuit. FIG. 8 is a flowchart (1) showing a processing example of the control circuit. FIG. 9 is a perspective view showing another configuration example of the ultraviolet lamp and the reflector of the sterilizer. FIG. 10 is a block diagram showing another configuration example of the sterilizer. FIG. 11 is a flowchart (2) showing a processing example of the control circuit. FIG. 12 is a perspective view showing another configuration example of the sterilizer such as an ultraviolet lamp and a reflector. FIG. 13A is a diagram (1) showing an example of a state of being irradiated with ultraviolet rays. FIG. 13B is a diagram (2) showing an example of a state of being irradiated with ultraviolet rays. FIG. 13C is a diagram (3) showing an example of a state of being irradiated with ultraviolet rays. FIG. 14 is a diagram showing an example of a state in which visible light is irradiated.

Hereinafter, the sterilizer according to the embodiment will be described with reference to the drawings. The present invention is not limited to this embodiment. In addition, the relationship between the dimensions of each element in the drawing, the ratio of each element, etc. may differ from the reality. Even between the drawings, there may be parts where the relationship and ratio of the dimensions are different from each other. Further, in principle, the contents described in one embodiment or modification are similarly applied to other embodiments or modifications.

FIG. 1 is a block diagram showing a configuration example of the sterilizer 1 according to the embodiment. In FIG. 1, the sterilizer 1 includes an ultraviolet lamp 2, a reflector (reflecting member) 3, a drive unit 6, an ultraviolet lamp drive circuit 7, and a control circuit 8. The ultraviolet lamp 2 is, for example, tubular (cylindrical) and emits ultraviolet rays from the outer peripheral surface. In the reflector 3, a curved, for example, a parabolic reflecting surface 3a surrounding the ultraviolet lamp 2 extends in the longitudinal direction of the ultraviolet lamp 2. As a result, the linear region can be irradiated with ultraviolet rays at the same time, and efficient sterilization work can be performed.

Further, the center of rotation of the reflector 3 and the center of the ultraviolet lamp 2 coincide with each other, and the reflector 3 can rotate around the ultraviolet lamp 2. The reflector 3 and the ultraviolet lamp 2 may rotate together. As will be described later, the ultraviolet rays emitted from the ultraviolet lamp 2 by the reflecting surface 3a of the reflecting plate 3 are controlled to a narrower light distribution (narrow distribution) than in the case without the reflecting plate 3, but the reflecting plate 3 By rotating (including the case where the ultraviolet lamp 2 rotates together), it is possible to cover a range to be sterilized, such as in a room.

The drive unit 6 has a function of changing the irradiation direction of ultraviolet rays by the ultraviolet lamp 2, and here, the reflector 3 is rotated around the ultraviolet lamp 2. In this case, since the drive unit 6 only needs to rotate the reflector 3, the load can be reduced, the power source such as a motor can be miniaturized, and the amount of power consumption can be reduced.

The ultraviolet lamp drive circuit 7 supplies electric power to the ultraviolet lamp 2 and irradiates it with ultraviolet rays. The control circuit 8 controls the drive unit 6 and the ultraviolet lamp drive circuit 7, controls the generation of ultraviolet rays from the ultraviolet lamp 2, and keeps the integrated amount of ultraviolet rays at a predetermined value for each ultraviolet irradiation direction (irradiation position). To control.

FIG. 2 is a diagram showing an example of changing from the wide light distribution of the sterilizer 1'of the comparative example to the narrow light distribution of the sterilizer 1 of the embodiment. In FIG. 2, in the sterilizing device 1'of the comparative example on the left side, the reflecting surface 3a'is fixed, and the ultraviolet rays from the ultraviolet lamp 2'are radiated all at once in a range to be sterilized. On the other hand, in the embodiment on the right side, the ultraviolet rays from the ultraviolet lamp 2 are radiated with a narrow light distribution, but the reflective surface 3a is rotatable, and the reflective surface 3a rotates to be a sterilization target. Cover the range.

FIG. 3 is a perspective view showing a configuration example of the ultraviolet lamp 2, the reflector 3, and the drive unit 6 of the sterilizer 1. In FIG. 3, the tubular ultraviolet lamp 2 extends in the Y-axis direction in the drawing, and the reflecting surface 3a of the reflector 3 has a curved, for example, parabolic shape surrounding the peripheral surface of the ultraviolet lamp 2. It extends in the longitudinal direction of the ultraviolet lamp 2. Further, the drive unit 6 rotates the reflector 3 (reflection surface 3a) around the ultraviolet lamp 2. The angle of this rotation is the tilt angle, and for example, the angle formed by the reflective surface 3a in the direction perpendicular to the optical axis direction (Z-axis direction) is the tilt angle.

As a mechanism for rotating the reflector 3 (reflection surface 3a), for example, a sleeve for inserting the ultraviolet lamp 2 is provided in the center of the flanges provided at both ends of the reflector 3, and this sleeve is formed by a frame or the like. It is rotatably supported. Then, the gear of the motor is meshed with the gear provided on the outer circumference of the sleeve, so that the rotation is performed.

FIG. 4 is a perspective view showing another configuration example of the ultraviolet lamp 2, the reflector 3, and the drive unit 6 of the sterilizer 1. In FIG. 4, the difference from FIG. 3 is that the drive unit 6 has not only the rotation angle (tilt angle) of the reflector 3 (reflection surface 3a) but also the central portion of the ultraviolet lamp 2 and the reflector 3 in the longitudinal direction. It is a point that is rotated in the horizontal plane around the center. This angle is a pan angle, and for example, the angle formed by the Y-axis direction and the longitudinal direction of the ultraviolet lamp 2 is the pan angle. By changing the pan angle in addition to the tilt angle, it is possible to change the irradiation range of ultraviolet rays in various ways.

As a mechanism for rotating the ultraviolet lamp 2 and the reflector 3, for example, the central portion of the frame that supports the ultraviolet lamp 2 and the reflector 3 is rotatably supported by a rotation shaft and is provided on the rotation shaft. Rotation is performed by engaging the gear of the motor with the gear.

5A to 5D are views showing an example of a state of the reflector 3, and show a state in which the tilt angle is changed by the drive unit 6 in the configuration of FIG. FIG. 5A shows a state in which the optical axis of ultraviolet rays is directed to the diagonally lower left side of the figure. FIG. 5B shows a state in which the optical axis of ultraviolet rays is directed directly below the figure. FIG. 5C shows a state in which the optical axis of ultraviolet rays is directed to the diagonally lower right side of the figure. FIG. 5D shows a storage position in which the ultraviolet lamp 2 is covered with the reflector 3 in conjunction with the extinguishing of the ultraviolet lamp 2. At the storage position, it is possible to prevent the scattering of glass fragments due to the damage of the ultraviolet lamp 2 and to eliminate the psychological anxiety about the irradiation or damage of the ultraviolet rays in the environment where a person is present.

FIG. 6 is a diagram showing a hardware configuration example of the control circuit 8. In FIG. 6, the control circuit 8 has a general computer configuration, and includes a processing unit (processor) H1, a storage unit (memory) H2, and an input / output unit (I / O: Input Output) H3. It is equipped with. The storage unit H2 includes a ROM (Read Only Memory), a RAM (Random Access Memory), an NV-RAM (Nonvolatile-RAM), an SSD (Solid State Drive), an HDD (Hard Disk Drive), and the like.

The processing unit H1 performs processing based on the data stored in the storage unit H2 or the data input from the input / output unit H3 according to the program stored in the storage unit H2. The data obtained by the processing is output from the input / output unit H3.

FIG. 7 is a diagram showing a functional configuration example of the control circuit 8. In FIG. 7, the control circuit 8 includes an irradiation position setting unit C1, an irradiation position control unit C2, and an irradiation control unit C3.

The irradiation position setting unit C1 has a function of setting a position or a range (a range is specified by a plurality of positions or the like) to irradiate ultraviolet rays for sterilization. The irradiation position control unit C2 has a function of controlling the drive unit 6 of the sterilizer 1 based on the setting information and controlling the position (tilt angle, pan angle) of irradiating the ultraviolet rays. The irradiation control unit C3 has a function of turning on / off the ultraviolet rays based on the setting information and the like.

FIG. 8 is a flowchart showing a processing example of the control circuit 8. In FIG. 8, when the control circuit 8 starts processing, it starts irradiating ultraviolet rays from an initial position (predetermined tilt angle and / or pan angle) (step S11). For example, the irradiation of ultraviolet rays is started from the position shown in FIG. 5A.

Next, returning to FIG. 8, did the control circuit 8 satisfy the end conditions by reaching the end time of the ultraviolet irradiation, the lapse of a predetermined time from the start of the ultraviolet irradiation, the end instruction from the administrator, and the like? It is determined whether or not (step S12). When the control circuit 8 determines that the end condition is not satisfied (No in step S12), the control circuit 8 calculates the integrated light amount for each ultraviolet irradiation position (irradiation direction) (step S13). The integrated amount of light for each ultraviolet irradiation position is calculated by multiplying the irradiance and the irradiation time. The irradiance becomes the highest value directly under the ultraviolet lamp 2, and the value becomes smaller as the distance from the irradiance increases.

Next, the control circuit 8 determines whether or not the calculated integrated light amount has reached a predetermined value (step S14). When the control circuit 8 determines that the integrated light amount has not reached a predetermined value (No in step S14), the control circuit 8 returns to the determination of the end condition (step S12).

When the control circuit 8 determines that the integrated light amount has reached a predetermined value (Yes in step S14), the control circuit 8 changes the irradiation position (tilt angle, pan angle) (step S15). For example, the irradiation position is changed to the side closer to the lower side of the ultraviolet lamp 2 than in FIG. 5A. By changing the irradiation position when the integrated light amount reaches a predetermined value for each irradiation position, the bactericidal effect can be made uniform. Then, returning to FIG. 8, the control circuit 8 returns to the determination of the end condition (step S12), and continues the process.

On the other hand, when it is determined that the end condition is satisfied (Yes in step S12), the control circuit 8 stops the irradiation of ultraviolet rays (step S16) and moves to, for example, the storage position in FIG. 5D (step S17). Then, the control circuit 8 ends the process.

FIG. 9 is a perspective view showing another configuration example of the ultraviolet lamp 2 and the reflector 3 of the sterilizer 1. In FIG. 9, the irradiation target side (opening side) of the reflector 3 is closed by a flat plate-shaped transparent cover 4. As the material of the cover 4, a transparent material that does not absorb ultraviolet rays is used. Other configurations are the same as those in FIG. 3 or FIG. Since the ultraviolet lamp 2 is surrounded by the reflector 3 and the cover 4, even if the ultraviolet lamp 2 is damaged, there is no risk of glass fragments being scattered, and safety can be improved. In addition, the psychological sense of security can be improved.

It is also possible to add the function of a lens having a light-collecting action to the cover 4. In this case, among the light emitted from the ultraviolet lamp 2, the light not controlled by the reflecting surface 3a of the reflecting plate 3 (light directly emitted from the ultraviolet lamp 2 to the opening side of the reflecting surface 3a) is condensed and narrowly distributed. Light can be realized more accurately. As the lens in this case, a linear Fresnel lens having a groove in the longitudinal direction of the ultraviolet lamp 2 can be used. Further, a plurality of circular lenses may be provided along the longitudinal direction of the ultraviolet lamp 2.

Further, a member that emits visible light by irradiation with ultraviolet rays is provided within the irradiation range of ultraviolet rays, which is a part of the cover 4 (including the case where it has a lens function) and a part of the reflective surface 3a of the reflector 3. Can be done. This makes it possible to visually recognize the member and the part illuminated by the light that has passed through the member by visible light, notify that invisible ultraviolet rays are generated, and encourage the taking of safety measures. Can be done.

FIG. 10 is a block diagram showing another configuration example of the sterilizer 1. In FIG. 10, what is different from the configuration of FIG. 1 is that a sensor 5 such as a focal infrared sensor that detects the presence of an object having a body temperature such as a person in the ultraviolet irradiation range of the ultraviolet lamp 2 and the reflecting plate 3 is provided. The point is that the ultraviolet lamp drive circuit 7 controls according to the detection signal of the sensor 5. Other configurations are the same as in FIG.

FIG. 11 is a flowchart showing a processing example of the control circuit 8. In FIG. 11, when the control circuit 8 starts processing, it starts irradiating ultraviolet rays from an initial position (predetermined tilt angle and / or pan angle) (step S21).

Next, the control circuit 8 determines whether or not the end condition is satisfied by reaching the end time of the ultraviolet irradiation, the lapse of a predetermined time from the start of the ultraviolet irradiation, the end instruction from the administrator, and the like (the end condition is satisfied). Step S22). When the control circuit 8 determines that the end condition is not satisfied (No in step S22), the control circuit 8 determines whether or not the sensor 5 has detected a person or the like (step S23).

When the control circuit 8 determines that the sensor 5 has not detected a person or the like (No in step S23), the control circuit 8 calculates the integrated light amount for each ultraviolet irradiation position (irradiation direction) (step S24).

Next, the control circuit 8 determines whether or not the calculated integrated light amount has reached a predetermined value (step S25). When the control circuit 8 determines that the integrated light amount has not reached a predetermined value (No in step S25), the control circuit 8 returns to the determination of the end condition (step S22).

When the control circuit 8 determines that the integrated light amount has reached a predetermined value (Yes in step S25), the control circuit 8 changes the irradiation position (tilt angle, pan angle) (step S26). Next, the control circuit 8 returns to the determination of the end condition (step S22) and continues the process.

On the other hand, when it is determined that the end condition is satisfied (Yes in step S22) or when it is determined that the sensor 5 has detected a person or the like (Yes in step S23), the control circuit 8 stops the irradiation of ultraviolet rays (Step S27). ), Move to the storage position (step S28). If a person or the like accidentally enters the irradiation range during the irradiation of ultraviolet rays, the irradiation of ultraviolet rays is immediately stopped, so that safety can be improved. Then, the control circuit 8 ends the process.

Next, a sterilizer 1 that can be used not only by irradiating ultraviolet rays for sterilization but also as a general lighting device by irradiating visible light will be described. As a result, when there is a person, it can be used as a lighting device, and when there is no person, sterilization work can be performed with one device.

FIG. 12 is a perspective view showing another configuration example of the ultraviolet lamp 2 and the reflector (reflecting member) 3 of the sterilizer 1 so that irradiation of ultraviolet rays and irradiation of visible light can be performed. In FIG. 12, a configuration different from that of FIG. 9 is that a plurality of visible light light sources 12 are arranged along the longitudinal direction as visible light light sources on the back side of the reflecting surface 3a of the reflecting plate 3 facing the ultraviolet lamp 2. The point is that the substrate 11 is arranged, and a transparent arcuate surface-shaped cover 13 that closes the side on which the visible light light source 12 is provided is provided. In the reflector 3, for example, a peripheral portion of a part of a cylinder is cut off to form a flat portion, and the substrate 11 is fixed to the flat portion. Further, a reflecting surface 3a made of a paraboloid or the like is provided on the uncut side of the reflecting plate 3. The inside of the reflector 3 may be hollow. The cover 13 prevents the visible light light source 12 from being soiled or damaged, is formed of a general transparent material, and does not need to be a material that does not absorb ultraviolet rays as in the cover 4 (FIG. 9).

The visible light light source 12 is a visible light light emitting diode (visible light LED) or another visible light light source (visible light fluorescent tube, incandescent lamp, etc.). The power supply to the visible light light source 12 is performed by the ultraviolet lamp drive circuit 7 (FIGS. 1 and 10), and the ultraviolet lamp 2 and the visible light light source 12 are controlled so as not to operate at the same time during normal use. Although the ultraviolet lamp 2 is drawn more finely in FIG. 12 than in the case of FIG. 9, there is no substantial difference and it is for convenience. The ultraviolet lamp 2 is supposed to be an ultraviolet discharge tube or the like, including the above-mentioned configuration example, but a plurality of ultraviolet light emitting diodes (ultraviolet LEDs) may be arranged linearly.

Further, the reflector 3 is preferably formed of a metal material, and can also serve as a heat sink that dissipates heat generated by the visible light light source 12 via the substrate 11. The drive unit 6 for driving the reflector 3 and the like and the control circuit 8 for controlling the drive unit 6 are the same as the above-mentioned configuration examples.

With such a configuration, it is possible to perform irradiation with ultraviolet rays and irradiation with visible light, and it is possible to prevent adverse effects on the visible light light source 12 due to irradiation with ultraviolet rays. That is, if the ultraviolet rays of the ultraviolet lamp 2 hit the visible light light source 12 such as a visible light light emitting diode or a visible light fluorescent tube, the material deteriorates. However, since the ultraviolet lamp 2 and the visible light light source 12 are respectively arranged in the space separated by the reflector 3, it is possible to prevent adverse effects due to the irradiation of ultraviolet rays.

Further, as a general rule, it is required that the area to be illuminated and the area to be sterilized in the room or the like match, but the rotation of the reflector 3 makes it possible to irradiate visible light and ultraviolet rays from substantially the same position. The equivalent region can be covered by the irradiation range of the visible light light source 12 and the irradiation range by orientation control by the reflection surface 3a and rotation. It should be noted that the illumination with visible light is a fixed irradiation with a wide light distribution pointing almost directly below, and the sterilization with ultraviolet rays is a mode of sweeping with a narrow light distribution. Of course, visible light may also be tilted or swept.

13A to 13C are views showing an example of a state in which ultraviolet rays are irradiated, and the irradiation range of the ultraviolet rays by the ultraviolet lamp 2 is directed to the irradiation target 200 under the ceiling 100. In FIG. 13A, ultraviolet rays are irradiated toward the lower left region in the figure. In FIG. 13B, ultraviolet rays are irradiated toward the region directly below in the figure. In FIG. 13C, ultraviolet rays are irradiated toward the lower right region in the figure.

FIG. 14 is a diagram showing an example of a state in which visible light is irradiated, and the irradiation range of visible light by the visible light light source 12 is directed to the irradiation target 200 under the ceiling 100.

Although the embodiment of the present invention has been described above, the present invention is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the present invention.

As described above, the sterilizer according to the embodiment includes an ultraviolet lamp that irradiates ultraviolet rays, a reflector that controls the ultraviolet rays emitted from the ultraviolet lamps to a narrow distribution, and a drive unit that changes the irradiation direction of the ultraviolet rays by the ultraviolet lamp. And a control circuit that controls the drive unit so as to keep the integrated amount of ultraviolet rays at a predetermined value for each irradiation direction of ultraviolet rays. As a result, the bactericidal effect can be made uniform.

Further, the ultraviolet lamp is tubular, and the reflector has a curved reflecting surface extending in the longitudinal direction of the ultraviolet lamp. As a result, the linear region can be irradiated with ultraviolet rays at the same time, and efficient sterilization work can be performed.

Further, the drive unit rotates the reflector around the ultraviolet lamp. As a result, the load on the drive unit can be reduced, the power source such as a motor can be miniaturized, and the amount of power consumption can be reduced.

Further, the control circuit rotates the reflector to a position where it closes the irradiation target side of the ultraviolet lamp when the ultraviolet light is not irradiated. As a result, it is possible to prevent the scattering of glass fragments due to the damage of the ultraviolet lamp, and to eliminate the psychological anxiety about the irradiation and damage of the ultraviolet rays in the environment where there are people.

In addition, the drive unit rotates the ultraviolet lamp and the reflector. This makes it possible to change the irradiation range of ultraviolet rays in various ways.

In addition, a cover that closes the irradiation target side of the reflector is provided, and the ultraviolet lamp is surrounded by the reflector and the cover. As a result, it is possible to prevent the scattering of glass fragments due to the breakage of the ultraviolet lamp, and to eliminate the psychological anxiety about the irradiation or breakage of the ultraviolet rays in the environment where a person is present.

In addition, it is equipped with a sensor that detects the presence of an object that has body temperature in the direction of UV irradiation, and the control circuit stops energizing the UV lamp when the sensor detects the presence of an object that has body temperature in the direction of UV irradiation. And stop the irradiation of ultraviolet rays. This can enhance safety.

Further, it is provided with a reflector and a lens provided on the emission side of the ultraviolet lamp to adjust the light distribution of ultraviolet rays. As a result, narrow light distribution can be realized more accurately.

Further, a member provided within the irradiation range of ultraviolet rays and emitting visible light by irradiation with ultraviolet rays is provided. As a result, it is possible to notify that the irradiation of ultraviolet rays is being performed and to encourage the taking of safety measures.

In addition, it is equipped with a visible light source located behind the reflective surface facing the ultraviolet lamp of the reflector, and the control circuit rotates the reflector by the drive unit to switch between ultraviolet irradiation and visible light illumination. .. As a result, it can be used not only by irradiating ultraviolet rays for sterilization but also as a general lighting device using visible light.

In addition, an ultraviolet lamp that irradiates ultraviolet rays, a reflector that narrowly controls the distribution of ultraviolet rays emitted from the ultraviolet lamp, a drive unit that changes the irradiation direction of ultraviolet rays by the ultraviolet lamp, and reflection that faces the ultraviolet lamp of the reflector. It is provided with a visible light light source arranged on the back side of the surface and a control circuit for switching between ultraviolet irradiation and visible light illumination by rotating a reflecting plate by a driving unit. As a result, it can be used not only by irradiating ultraviolet rays for sterilization but also as a general lighting device using visible light.

The reflector also serves as a heat sink for a light source of visible light. This makes it possible to promote heat dissipation from the visible light source.

It also includes a cover that closes the side of the reflector where the visible light source is provided. This makes it possible to prevent the visible light source from becoming dirty or damaged.

The visible light source is a visible light emitting diode or other visible light source. This expands the selection range of the visible light source.

The ultraviolet lamp is also an ultraviolet light emitting diode or other ultraviolet light source. This expands the selection range of the UV lamp.

Further, the present invention is not limited to the above embodiments. The present invention also includes a configuration in which the above-mentioned components are appropriately combined. Further, further effects and modifications can be easily derived by those skilled in the art. Therefore, the broader aspect of the present invention is not limited to the above-described embodiment, and various modifications can be made.

1 sterilizer, 2 UV lamp, 3 reflector (reflecting member), 3a reflective surface, 4 cover, 5 sensor, 6 drive unit, 7 UV lamp drive circuit, 8 control circuit, 11 board, 12 visible light source, 13 cover

Claims (15)

An ultraviolet lamp that irradiates ultraviolet rays and
A reflector that narrowly controls the distribution of ultraviolet rays emitted from the ultraviolet lamp, and
A drive unit that changes the irradiation direction of ultraviolet rays by the ultraviolet lamp, and
A control circuit that controls the drive unit so as to keep the integrated amount of ultraviolet rays at a predetermined value for each ultraviolet irradiation direction.
A sterilizer equipped with. The ultraviolet lamp is tubular and has a tubular shape.
In the reflector, a curved reflecting surface surrounding the ultraviolet lamp extends in the longitudinal direction of the ultraviolet lamp.
The sterilizer according to claim 1. The drive unit rotates the reflector around the ultraviolet lamp.
The sterilizer according to claim 1 or 2. The control circuit rotates the reflector to a position that closes the irradiation target side of the ultraviolet lamp when the ultraviolet light is not irradiated.
The sterilizer according to claim 3. The drive unit rotates the ultraviolet lamp and the reflector.
The sterilizer according to any one of claims 1 to 4. A cover that closes the irradiation target side of the reflector is provided.
Surrounding the UV lamp with the reflector and the cover.
The sterilizer according to any one of claims 1 to 5. Equipped with a sensor that detects the presence of an object with body temperature in the direction of ultraviolet irradiation,
When the sensor detects the presence of an object having a body temperature in the ultraviolet irradiation direction, the control circuit stops energization of the ultraviolet lamp and stops the irradiation of ultraviolet rays.
The sterilizer according to any one of claims 1 to 6. A lens provided on the emission side of the reflector and the ultraviolet lamp and for adjusting the light distribution of ultraviolet rays is provided.
The sterilizer according to any one of claims 1 to 7. It is provided within the irradiation range of ultraviolet rays and includes a member that emits visible light by irradiation with ultraviolet rays.
The sterilizer according to any one of claims 1 to 8. A light source of visible light arranged behind the reflective surface of the reflector facing the ultraviolet lamp is provided.
The control circuit rotates the reflector by the driving unit to switch between irradiation with ultraviolet rays and illumination with visible light.
The sterilizer according to any one of claims 1 to 9. An ultraviolet lamp that irradiates ultraviolet rays and
A reflector that narrowly controls the distribution of ultraviolet rays emitted from the ultraviolet lamp, and
A drive unit that changes the irradiation direction of ultraviolet rays by the ultraviolet lamp, and
A light source of visible light arranged behind the reflective surface of the reflector facing the ultraviolet lamp, and a light source of visible light.
A control circuit that rotates the reflector by the drive unit to switch between irradiation with ultraviolet rays and illumination with visible light.
A sterilizer equipped with. The reflector also serves as a heat sink for the visible light source.
The sterilizer according to claim 10 or 11. A cover is provided that closes the side of the reflector where the visible light source is provided.
The sterilizer according to any one of claims 10 to 12. The visible light source is a visible light emitting diode or other visible light source.
The sterilizer according to any one of claims 10 to 13. The ultraviolet lamp is an ultraviolet light emitting diode or other ultraviolet light source.
The sterilizer according to any one of claims 1 to 14.

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