Sealing fan

Abstract

To provide a harmful substance control device that can act on a harmful substance in the air.SOLUTION: A ceiling fan 100 can be attached to a ceiling face C. The ceiling fan 100 has a harmful substance controller 1 and an air blower 2. The harmful substance controller 1 controls a harmful substance SA. The air blower 2 generates airflow. The harmful substance controller 1 preferably includes a light source 14. The light source 14 preferably emits ultraviolet rays. The harmful substance controller 1 preferably includes an ozone generator 1A. The ozone generator 1A preferably generates ozone.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a harmful substance control device.

Background Art

[0002] The sealing fan described in Patent Document 1 includes a motor unit, blades, and an air cleaning unit. The blades are connected to the rotor of the motor unit. The air cleaning unit is provided above the motor unit. The air cleaning unit includes an air filtration unit and a blower unit. When the rotor of the motor unit rotates, the blades and the fan of the blower unit rotate. When the fan of the blower unit rotates, air is blown above the blades through the air filtration unit that collects dust. Then, the air blown above the blades is blown downward by the blades. As a result, the air that has been collected and cleaned of dust in the air cleaning unit is blown by the blades.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In recent years, there has been a demand to kill, reduce, lose infectivity, neutralize toxicity, suppress growth, remove, or decompose harmful substances such as bacteria, viruses, smoke, perfume, or pests in the air. For example, the air filtration unit of the sealing fan described in Patent Document 1 collects dust from the air blown by the blower unit. However, harmful substances in the air are likely to be smaller than dust. Therefore, with the sealing fan described in Patent Document 1, for example, it may not be possible to collect harmful substances in the air.

[0005] The present invention has been made in view of the above problems, and an object thereof is to provide a harmful substance control device capable of acting on harmful substances in the air.

Means for Solving the Problems

[0006] The harmful substance control device according to the present invention can be mounted on a ceiling surface. The harmful substance control device includes a harmful substance control unit and a blower unit. The harmful substance control unit controls harmful substances. The blower unit generates an air current.

[0007] In the harmful substance control device according to the present invention, it is preferable that the harmful substance control unit includes a light source that emits ultraviolet rays.

[0008] In the harmful substance control device according to the present invention, it is preferable that the harmful substance control unit includes an ozone generator that generates ozone.

[0009] The harmful substance control device according to the present invention preferably further includes a mounting portion and a connecting portion. The mounting portion is preferably capable of being mounted on the ceiling surface. The connecting portion preferably connects the mounting portion and the blower unit. The harmful substance control unit preferably includes a light source that emits ultraviolet rays and an ozone generator that generates ozone. The ozone generator is preferably disposed in the mounting portion, and the light source is preferably disposed in the blower unit.

[0010] In the harmful substance control device according to the present invention, it is preferable that the blower unit includes a blade portion and a drive unit. The drive unit preferably rotates the blade portion. When the light source emits ultraviolet rays toward the ceiling surface, it is preferable that the drive unit generates an air current that moves in a direction approaching the ceiling surface in response to rotating the blade portion in a first rotation direction. When the ozone generator generates ozone, it is preferable that the drive unit generates an air current that moves in a direction away from the ceiling surface in response to rotating the blade portion in a second rotation direction opposite to the first rotation direction.

Effects of the Invention

[0011] According to the harmful substance control device of the present invention, it is possible to act on harmful substances in the air.

Brief Description of the Drawings

[0012]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Modes for Carrying Out the Invention

[0013] Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the drawings, the same or corresponding parts are denoted by the same reference numerals and the description will not be repeated. In the present specification, for the sake of easy understanding of the invention, the X direction, Y direction, and Z direction orthogonal to each other may be referred to for description. For example, the X direction and Y direction are parallel to the horizontal direction, and the Z direction is parallel to the vertical direction. However, the X direction and Y direction may be parallel to directions other than the horizontal direction, and the Z direction may be parallel to directions other than the vertical direction.

[0014] (Embodiment 1) First, referring to FIG. 1, the sealing fan 100 according to Embodiment 1 of the present invention will be described. FIG. 1 is a side view showing the sealing fan 100. As shown in FIG. 1, the sealing fan 100 of Embodiment 1 can be attached to, for example, the ceiling surface C. Note that the ceiling surface C may be parallel to the horizontal direction or may be inclined with respect to the horizontal direction. Further, the sealing fan 100 may be attached to the ceiling surface C via a duct rail. In this case, the sealing fan 100 is attached to the duct rail, and the duct rail may be directly attached (fixed) to the ceiling surface C, may be embedded in the ceiling surface C, or may be suspended from the ceiling surface C by an arm, a wire, or the like. The sealing fan 100 is an example of a "harmful substance control device".

[0015] In Embodiment 1, the sealing fan 100 includes a harmful substance control unit 1, a blowing unit 2, a mounting unit 3, and a connecting unit 4.

[0016] The mounting unit 3 can be mounted on the ceiling surface C. In the example shown in FIG. 1, the mounting unit 3 is mounted on the ceiling surface C. The mounting unit 3 includes a housing 30.

[0017] The blowing unit 2 generates an air flow. The blowing unit 2 includes a housing 20 and blades 21. The housing 20 has an opposing surface 26 that faces the mounting unit 3. Specifically, the opposing surface 26 faces the mounting unit 3 in the direction in which the connecting unit 4 extends. The opposing surface 26 has an opening h1.

[0018] The blowing unit 2 generates an air flow F1 that moves toward the ceiling surface C or an air flow F2 that moves away from the ceiling surface C by rotating the blades 21 about the rotation axis AX. The rotation axis AX is the central axis of the blowing unit 2. Further, the rotation axis AX is the central axis of the connecting unit 4.

[0019] The connecting part 4 connects the mounting part 3 and the air blowing part 2. In the present embodiment, the connecting part 4 has an elongated cylindrical shape. Inside the connecting part 4, for example, wiring (not shown) that connects an external power source, the air blowing part 2, and the light source part 1B is inserted. The external power source is a commercial power source. In a state where the ceiling fan 100 is mounted on the ceiling surface C, the connecting part 4 extends, for example, along the vertical direction (Z direction). The light source part 1B will be described later.

[0020] The harmful substance control unit 1 controls harmful substances. Hereinafter, harmful substances may be described as "harmful substance SA". The harmful substance SA is, for example, something that gives people discomfort. The harmful substance SA is, for example, bacteria, virus, smoke, perfume (remaining odor), or pests. Smoke is an example of an inorganic substance or an organic substance. Perfume is an example of an organic substance. Controlling the harmful substance SA indicates acting on the harmful substance SA. Hereinafter, examples of controlling the harmful substance SA will be described.

[0021] Specifically, controlling the harmful substance SA includes, for example, killing the harmful substance SA, suppressing its growth, removing it, or decomposing it. More specifically, for example, when the harmful substance SA is a virus, the harmful substance control unit 1 kills the virus, suppresses the growth of the virus, or removes the virus. Also, for example, when the harmful substance SA is bacteria, the harmful substance control unit 1 kills the bacteria, reduces the bacteria, makes the bacteria lose their infectivity, neutralizes the toxicity of the bacteria, suppresses the growth of the bacteria, or removes the bacteria. Also, for example, when the harmful substance SA is smoke, the harmful substance control unit 1 decomposes the smoke or removes the smoke. And, for example, when the harmful substance SA is perfume, the harmful substance control unit 1 decomposes the perfume or removes the perfume. Further, for example, when the harmful substance SA is pests, the harmful substance control unit 1 kills the pests or removes the pests. The harmful substance control unit 1 controls the harmful substance SA, for example, by emitting electromagnetic waves or gas toward the harmful substance SA.

[0022] In Embodiment 1, the harmful substance control unit 1 includes an ozone generator 1A. The ozone generator 1A is disposed, for example, in the mounting unit 3. Specifically, the ozone generator 1A is disposed inside the housing 30 of the mounting unit 3. That is, in Embodiment 1, the housing 30 houses the ozone generator 1A.

[0023] The ozone generator 1A generates ozone. Ozone is an example of a gas. The ozone generator 1A discharges ozone toward a predetermined area. Therefore, the ozone generator 1A can control the harmful substance SA in the air by discharging ozone into the air. Specifically, the ozone generator 1A kills the harmful substance SA in the air, suppresses the growth of the harmful substance SA in the air, removes the harmful substance SA in the air, or decomposes the harmful substance SA in the air by discharging ozone into the air.

[0024] Since the specific gravity of ozone is heavier than that of other molecules (e.g., oxygen molecules, nitrogen molecules, and carbon dioxide) in the air, ozone falls in the air. Therefore, by disposing the ozone generator 1A at a position close to the ceiling surface C, ozone can be efficiently diffused. For example, by disposing the ozone generator 1A in the mounting unit 3 as in Embodiment 1, ozone can be efficiently diffused into the room.

[0025] Also, in Embodiment 1, the harmful substance control unit 1 includes a light source unit 1B. The light source unit 1B is disposed, for example, in the blower unit 2. Specifically, the light source unit 1B is disposed inside the blower unit 2. That is, in Embodiment 1, the housing 20 houses the light source unit 1B.

[0026] The light source unit 1B emits light. The light emitted by the light source unit 1B is emitted to the outside of the housing 20 through the aperture h1 of the opposing surface 26. In Embodiment 1, the light source 14 (see FIG. 2) of the light source unit 1B emits ultraviolet light UV. That is, in Embodiment 1, the light source 14 is, for example, an ultraviolet lamp. The ultraviolet lamp is, for example, a low-pressure mercury lamp (low-pressure mercury lamp), a xenon lamp (xenon lamp), an excimer lamp, or a deuterium lamp, etc. Therefore, a predetermined area irradiated with ultraviolet light UV can be sterilized. The ultraviolet light UV preferably includes light of 1 nm or more and 400 nm or less, and is light having a central wavelength of 150 nm or more and 230 nm or less. Among them, since the light of 222 nm has less influence on the human body and a sterilization effect can be obtained, the light source unit 1B of Embodiment 1 more preferably emits ultraviolet light having a central wavelength of approximately 222 nm.

[0027] Therefore, by emitting ultraviolet light into the air, the light source unit 1B can control the harmful substance SA in the air. Specifically, by emitting ultraviolet light into the air, the light source unit 1B kills the harmful substance SA in the air, suppresses the growth of the harmful substance SA in the air, removes the harmful substance SA in the air, or decomposes the harmful substance SA in the air.

[0028] Also, in Embodiment 1, the ultraviolet light UV is emitted toward the ceiling surface C through the opposing surface 26. Therefore, it is possible to more effectively suppress the irradiation of the user existing in the room with ultraviolet light UV.

[0029] In the present embodiment, the ozone generator 1A is arranged in the mounting portion 3, and the light source unit 1B is arranged in the blowing portion 2. Therefore, each of the mounting portion 3 and the blowing portion 2 can be miniaturized. As a result, the aesthetic appearance of the sealing fan 100 can be improved.

[0030] Hereinafter, for convenience of explanation, the side on which the blowing portion 2 is arranged with respect to the mounting portion 3 is defined as the "lower side", and the side on which the mounting portion 3 is arranged with respect to the blowing portion 2 is defined as the "upper side", and the vertical direction is defined.

[0031] Next, with reference to FIG. 2, the sealing fan 100 will be further described. FIG. 2 is a block diagram showing the sealing fan 100.

[0032] As shown in FIG. 2, the air blowing unit 2 further includes a power supply unit 22 and a motor 23. The power supply unit 22 is connected to an external power supply, and external power is supplied to the power supply unit 22. The power supply unit 22 converts the external power into internal power and supplies the internal power to the motor 23. By the internal power, the motor 23 rotates the blade unit 21. The motor 23 is an example of a “driving unit”.

[0033] The ozone generator 1A includes a power supply unit 11 and an ozone generation unit 12. The power supply unit 11 is connected to an external power supply, and external power is supplied to the power supply unit 11. The power supply unit 11 converts the external power into internal power and supplies the internal power to the ozone generation unit 12. By the internal power, the ozone generation unit 12 generates ozone.

[0034] The light source unit 1B further includes a power supply unit 13. The power supply unit 13 is connected to an external power supply, and external power is supplied to the power supply unit 13. The power supply unit 13 converts the external power into internal power and supplies the internal power to the light source 14. Specifically, the internal power converted by the power supply unit 13 is further converted by an inverter and supplied to the light source 14. Then, the light source 14 emits ultraviolet rays.

[0035] The sealing fan 100 further includes a controller 5, a light receiving unit 6, and an operation unit 7. Also, the sealing fan 100 can be remotely operated by a remote controller RC. The remote controller RC has, for example, a function of transmitting infrared rays to the sealing fan 100.

[0036] The light-receiving unit 6 receives the infrared rays transmitted from the remote controller RC. The light-receiving unit 6 inputs the light-receiving result of the infrared rays transmitted from the remote controller RC to the controller 5. The infrared rays of the remote controller RC include, for example, information indicating an instruction for the ceiling fan 100. The instruction for the ceiling fan 100 is, for example, an instruction to rotate the blade part 21 of the blower unit 2 in a predetermined direction, an instruction to generate ozone in the ozone generator 1A, an instruction to emit light from the light source unit 1B, an instruction to stop the blower unit 2, an instruction to stop the ozone generator 1A, or an instruction to stop the light source unit 1B. Note that the infrared rays of the remote controller RC may include information indicating a plurality of instructions for the ceiling fan 100.

[0037] The operation unit 7 is operated by the user. The operation unit 7 is, for example, a switch. The operation unit 7 is provided, for example, in the room where the ceiling fan 100 is installed. Note that the operation unit 7 may be provided outside the room where the ceiling fan 100 is installed, or may be provided in the ceiling fan 100. When the operation unit 7 is operated, for example, the on state and the off state of the ceiling fan 100 are switched. Specifically, when the operation unit 7 is operated, for example, the on state and the off state of the main power supply of the ceiling fan 100 are switched.

[0038] The controller 5 is a microcomputer including a processor such as a CPU (Central Processing Unit) or an MPU (Micro Processing Unit) and a storage unit 55 as a memory. In Embodiment 1, the controller 5 controls each of the harmful substance control unit 1 and the blower unit 2. Specifically, the controller 5 controls each of the ozone generator 1A, the light source unit 1B, and the blower unit 2.

[0039] The storage unit 55 stores computer programs and data such as software. Specifically, the storage unit 55 includes a main storage device such as a semiconductor memory, and an auxiliary storage device such as a semiconductor memory, a solid state drive, and / or a hard disk drive.

[0040] In addition, the storage unit 55 stores the operation schedules of the air blowing unit 2 and the harmful substance control unit 1. Specifically, the storage unit 55 stores the operation schedule of the air blowing unit 2, the operation schedule of the ozone generator 1A, and the operation schedule of the light source unit 1B. For example, the operation schedule of each of the air blowing unit 2, the ozone generator 1A, and the light source unit 1B includes the scheduled time to start the operation and the scheduled time to stop the operation of each of the air blowing unit 2, the ozone generator 1A, and the light source unit 1B, respectively.

[0041] The processor of the controller 5 functions as a blowing control unit 51, an ozone control unit 52, a light source control unit 53, and a timer 54 by executing the computer program stored in the storage unit 55. That is, the controller 5 includes a blowing control unit 51, an ozone control unit 52, a light source control unit 53, and a timer 54.

[0042] The timer 54 acquires the current time. The timer 54 may measure the time by itself. The timer 54 may include, for example, a real-time clock that marks the time (standard time). The timer 54 is an example of a "time acquisition unit".

[0043] The air supply control unit 51 controls the air supply unit 2. The air supply control unit 51 controls the air supply unit 2 to operate the air supply unit 2 or stop the operating air supply unit 2. Specifically, for example, the air supply control unit 51 controls the air supply unit 2 based on the operation content of the operation unit 7 by the user. Also, for example, the air supply control unit 51 controls the air supply unit 2 based on the light reception result of the light reception unit 6 input by the light reception unit 6. Also, for example, the air supply control unit 51 controls the air supply unit 2 based on the acquisition result of the timer 54 and the operation schedule of the harmful substance control unit 1 stored in the storage unit 55. Specifically, the air supply control unit 51 compares, for example, the current time with the scheduled time registered in the operation schedule of the air supply unit 2 to determine whether the current time has reached the scheduled time for the air supply unit 2 to start or stop operating. When the current time reaches the scheduled time for the air supply unit 2 to start operating, the air supply control unit 51 operates the air supply unit 2. Also, when the current time reaches the scheduled time for the air supply unit 2 to stop operating, the air supply control unit 51 stops the air supply unit 2.

[0044] The ozone control unit 52 controls the ozone generator 1A. The ozone control unit 52 controls the ozone generator 1A to operate the ozone generator 1A or stop the operating ozone generator 1A. Specifically, for example, the ozone control unit 52 controls the ozone generator 1A based on the light reception result of the light reception unit 6 input by the light reception unit 6. Also, for example, the ozone control unit 52 controls the ozone generator 1A based on the acquisition result of the timer 54 and the operation schedule of the ozone generator 1A stored in the storage unit 55. Specifically, the ozone control unit 52 compares, for example, the current time with the scheduled time registered in the operation schedule of the ozone generator 1A to determine whether the current time has reached the scheduled time for the ozone generator 1A to start or stop operating. When the current time reaches the scheduled time for the ozone generator 1A to start operating, the air supply control unit 51 operates the air supply unit 2. Also, when the current time reaches the scheduled time for the ozone generator 1A to stop operating, the ozone control unit 52 stops the ozone generator 1A.

[0045] Furthermore, the light source control unit 53 controls the light source unit 1B. The light source control unit 53 controls the light source unit 1B to operate the light source unit 1B or stop the operating light source unit 1B. Specifically, for example, the light source control unit 53 controls the light source unit 1B based on the light reception result of the light reception unit 6 input by the light reception unit 6. Also, for example, the light source control unit 53 controls the light source unit 1B based on the acquisition result of the timer 54 and the operation schedule of the light source unit 1B stored in the storage unit 55. Specifically, the light source control unit 53 compares, for example, the current time with the scheduled time registered in the operation schedule of the light source unit 1B to determine whether the current time has reached the scheduled time for the light source unit 1B to start or stop operating. When the current time reaches the scheduled time for the light source unit 1B to start operating, the light source control unit 53 operates the blower unit 2. Also, when the current time reaches the scheduled time for the light source unit 1B to stop operating, the light source control unit 53 stops the light source unit 1B.

[0046] Here, when the operation unit 7 is operated and the sealing fan 100 is in the on state, the harmful substance control unit 1 operates. Specifically, for example, when the operation unit 7 is operated and the main power supply of the sealing fan 100 is in the on state, the harmful substance control unit 1 starts operating in response to the light reception unit 6 receiving an instruction to start operating. Therefore, it is possible to provide a waiting time for waiting until the harmful substance control unit 1 operates from when the user operates the operation unit 7 until the user operates the remote controller RC. As a result, since the user can predict that the harmful substance control unit 1 will start operating, the sense of tension of the user caused by the sudden operation of the harmful substance control unit 1 can be reduced.

[0047] In addition, when the operation unit 7 is operated and the main power supply of the ceiling fan 100 is in the off state, for example, even if the user operates the remote controller RC and transmits infrared rays toward the light receiving unit 6 in response to an instruction to start the operation of the harmful substance control unit 1, the harmful substance control unit 1 does not operate. This is because when the main power supply of the ceiling fan 100 is in the off state, for example, the power supply to the light receiving unit 6 is turned off, so the light receiving unit 6 is in the off state. Also, when the ceiling fan 100 is in the off state, for example, even if the current time reaches the scheduled time to start the operation of the harmful substance control unit 1, the harmful substance control unit 1 does not operate. Note that when the main power supply of the ceiling fan 100 is in the off state, the light receiving unit 6 may be in the on state.

[0048] Next, with reference to FIGS. 2 and 3, the ceiling fan 100 will be further described. FIG. 3 is a perspective view showing the ceiling fan 100. Specifically, FIG. 3 shows the ceiling fan 100 when viewed from the side opposite to the ceiling surface C with respect to the ceiling fan 100.

[0049] As shown in FIG. 3, the housing 30 of the mounting portion 3 has a substantially cylindrical shape. Specifically, in Embodiment 1, the housing 30 has, for example, a flat substantially cylindrical shape. Further, the housing 30 has a facing surface 31 that faces the blowing portion 2. Specifically, the facing surface 31 faces the facing surface 26 of the blowing portion 2 in the direction in which the connecting portion 4 extends.

[0050] The facing surface 31 has an opening 31h. In Embodiment 1, the facing surface 31 has a plurality of openings 31h. The opening 31h is, for example, slit-shaped. However, the shape of the opening 31h is not particularly limited. For example, the opening 31h may have a substantially rectangular shape or a substantially circular shape. Also, in Embodiment 1, the plurality of openings 31h are arranged, for example, in a staggered pattern. In other words, the plurality of openings 31h are arranged alternately along one direction. Further in other words, the plurality of openings 31h are arranged in a zigzag pattern. However, the arrangement of the openings 31h is not particularly limited.

[0051] When the ozone generation unit 12 of the ozone generator 1A generates ozone, ozone is discharged from the opening 31h to the outside of the housing 30.

[0052] The housing 20 of the blower unit 2 has, for example, a flat substantially cylindrical shape. Further, the housing 20 further has a bottom surface 25. The bottom surface 25 has a substantially circular shape. The bottom surface 25 is the surface of the housing 20 that is farthest from the mounting portion 3. Also, the bottom surface 25 faces the opposing surface 26 of the housing 20 in the direction in which the connecting portion 4 extends. Also, for example, when the user is located directly below the sealing fan 100, the bottom surface 25 faces the user in the direction in which the connecting portion 4 extends.

[0053] In Embodiment 1, the light receiving unit 6 is disposed, for example, on the bottom surface 25. However, the arrangement of the light receiving unit 6 is not particularly limited. For example, the light receiving unit 6 may be disposed on the blade portion 21, may be disposed on the side surface of the housing 20, or may be disposed on the mounting portion 3.

[0054] In Embodiment 1, the blower unit 2 includes four blade portions 21. Each of the four blade portions 21 extends from the housing 20 in four directions around the housing 20.

[0055] For example, when the light receiving unit 6 receives infrared rays corresponding to an instruction to rotate the blade portion 21 in the first rotation direction R1, based on the light receiving result of the light receiving unit 6, the air blowing control unit 51 of the controller 5 controls the motor 23 so that the blade portion 21 rotates in the first rotation direction R1. As a result, the blade portion 21 rotates in the first rotation direction R1, and an air flow F1 is generated in a direction approaching the ceiling surface C. The first rotation direction R1 is, for example, the direction of rotation in the clockwise direction. Note that the first rotation direction R1 may be the direction of rotation in the counterclockwise direction.

[0056] Also, for example, when the light-receiving unit 6 receives infrared rays corresponding to an instruction to rotate the blade portion 21 in the second rotation direction R2, based on the light-receiving result of the light-receiving unit 6, the air-blowing control unit 51 of the controller 5 controls the motor 23 so that the blade portion 21 rotates in the second rotation direction R2. As a result, the blade portion 21 rotates in the second rotation direction R2, generating an air current F2 that moves in a direction away from the ceiling surface C. The second rotation direction R2 is a direction that rotates in the opposite direction to the first rotation direction R1. That is, the second rotation direction R2 is opposite to the first rotation direction R1.

[0057] In Embodiment 1, when the light source control unit 53 controls the light source unit 1B (light source 14) to emit ultraviolet rays, the air-blowing control unit 51 controls the motor 23 so that the blade portion 21 rotates in the first rotation direction R1 to generate an air current F1. The air current F1 sends, for example, the air on the side farther from the ceiling surface C than the light source 14 to the side closer to the ceiling surface C than the light source 14. Therefore, by irradiating the air moved by the air current F1 generated by the blade portion 21 with ultraviolet rays from the light source 14, the air with the harmful substance SA controlled can be effectively moved toward the floor by the air current F1. As a result, the air with the harmful substance SA controlled effectively circulates in the room.

[0058] Also, in Embodiment 1, when the ozone control unit 52 controls the ozone generator 1A to generate ozone, the air-blowing control unit 51 controls the motor 23 so that the blade portion 21 rotates in the second rotation direction R2 to generate an air current F2. Therefore, the ozone released into the air is effectively dispersed by the air current F2 generated by the blade portion 21. As a result, the harmful substance SA in the air can be effectively controlled. Consequently, the air with the harmful substance SA controlled effectively circulates in the room.

[0059] The blades 21 of the ceiling fan 100 are preferably, for example, changed in the rotating direction according to the season. For example, in winter, it is preferable to generate an air flow F1 directed in a direction approaching the ceiling surface C in response to rotating the blades 21 in the first rotation direction R1. This is because by generating the air flow F1, the warm air staying near the ceiling surface C can be moved toward the floor side, thereby making the temperature of the indoor air approach uniformity. Also, for example, in summer, it is preferable to generate an air flow F2 directed in a direction away from the ceiling surface C in response to rotating the blades 21 in the second rotation direction R2. This is because the user's perceived temperature drops since the air flow F1 directly acts on the user present in the room. From the above, for example, the operation schedule of each of the blower unit 2, the ozone generator 1A, and the light source unit 1B may each include information on the schedule when each of the blower unit 2, the ozone generator 1A, and the light source unit 1B starts operating. That is, in winter, the blades 21 are rotated in the first rotation direction R1 by the blower control unit 51, and the light source 14 emits ultraviolet light. Also, in summer, the blades 21 are rotated in the second rotation direction R2 by the blower control unit 51, and the ozone generation unit 12 releases ozone. Therefore, while appropriately adjusting the indoor temperature according to the season, harmful substances SA in the indoor air can be controlled. As a result, a comfortable indoor environment can be realized.

[0060] Here, the ceiling fan 100 may further include a light emitting part (not shown). The light emitting part is arranged, for example, in the blower unit 2. Specifically, for example, it is arranged below the blades 21 or on the bottom surface 25 of the housing 20. The light emitting part emits visible light by, for example, emitting light. The light emitting part illuminates the room, for example. That is, in Embodiment 1, the light emitting part is a light source. Specifically, the light emitting part is, for example, an LED (Light Emitting Diode).

[0061] Next, with reference to FIG. 4, the blower unit 2 will be described. FIG. 4 is a perspective view showing the ceiling fan 100. Specifically, FIG. 4 shows the ceiling fan 100 when viewed from the side of the ceiling surface C with respect to the ceiling fan 100. Note that, for ease of understanding the invention, the mounting part 3 and the connecting part 4 are omitted in FIG. 4.

[0062] As shown in FIG. 4, in Embodiment 1, the opposing surface 26 of the housing 20 of the blower unit 2 has an opening h1 and an opening h2. Specifically, the opposing surface 26 has a plurality of openings h1 and a single opening h2. The connecting portion 4 (see FIG. 1) is inserted through the opening h2.

[0063] In Embodiment 1, the opening h1 has, for example, a substantially fan-shaped shape. Note that the shape of the opening h1 is not particularly limited. For example, the opening h1 may have a substantially circular shape, a substantially rectangular shape, or a substantially annular shape. Also, the number of the openings h1 is not particularly limited. For example, the opening h1 may be single or plural and three or more.

[0064] In Embodiment 1, for example, a cover 27 is fitted into the opening h1. The cover 27 is formed of, for example, a light-transmitting material. The light-transmitting material is, for example, glass or a transparent resin. Accordingly, while suppressing the entry of foreign matter into the housing 20 through the opening h1, the ultraviolet rays emitted by the light source unit 1B can be emitted to the outside of the housing 20.

[0065] In Embodiment 1, the light source unit 1B may be fixed to the housing 20 by fixing means such as screws, for example. In this case, the light source unit 1B is attached to and detached from the housing 20 using a tool, for example. That is, the light source unit 1B is detachable from the housing 20. Accordingly, the light source unit 1B can be replaced. As a result, even when the life of the light source unit 1B is short, the sealing fan 100 can be used for a period longer than the life of the light source unit 1B. Note that the light source unit 1B may be configured to be attached to and detached from the housing 20 without using a tool. For example, the light source unit 1B may be screwed into the housing 20 or may be connected to a connection portion (for example, a connector) disposed inside the housing 20.

[0066] (Embodiment 2) Next, with reference to FIG. 5, the sealing fan 100a according to Embodiment 2 will be described. FIG. 5 is a side view showing the sealing fan 100a according to Embodiment 2. Embodiment 2 is different from Embodiment 1 in that it does not include the ozone generator 1A and includes the light source unit 1BU and the light source unit 1BD instead of the light source unit 1B. Hereinafter, regarding Embodiment 2, matters different from Embodiment 1 will be described, and descriptions of parts overlapping with Embodiment 1 will be omitted.

[0067] As shown in FIG. 5, the sealing fan 100a includes a light source unit 1BU and a light source unit 1BD. The light source unit 1BU and the light source unit 1BD are disposed inside the blower unit 2. That is, in Embodiment 2, the housing 20 houses the light source unit 1BU and the light source unit 1BD. The light source unit 1BU and the light source unit 1BD face each other in the direction in which the connecting portion 4 extends. Also, in Embodiment 2, for example, the light source unit 1BU is closer to the mounting portion 3 than the light source unit 1BD.

[0068] Each of the light source unit 1BU and the light source unit 1BD emits light. The light emitted by the light source unit 1BU is emitted to the outside of the housing 20 through the opening h1 of the facing surface 26. Also, the light emitted by the light source 1BD is emitted to the outside of the housing 20 through the opening h3 of the bottom surface 25 of the housing 20. In Embodiment 2, each of the light source unit 1BU and the light source unit 1BD emits ultraviolet rays. Specifically, the light source 14 of each of the light source unit 1BU and the light source unit 1BD is, for example, an ultraviolet lamp.

[0069] In Embodiment 2, for example, when generating the air flow F1 in the blade portion 21, the light source 14 of the light source unit 1BU emits ultraviolet rays. Therefore, harmful substances SA in the air on the side closer to the ceiling surface C than the light source unit BU are controlled, and the air in which the harmful substances SA are controlled effectively moves toward the floor by the air flow F1 generated by the blade portion 21. As a result, the air in which the harmful substances SA are controlled can effectively circulate in the room.

[0070] Also, for example, when generating the airflow F2 in the blade part 21, the light source 14 of the light source part 1BD emits ultraviolet rays. Therefore, the air with the harmful substance SA controlled is effectively diffused toward the floor. As a result, the air with the harmful substance SA controlled effectively circulates in the room.

[0071] As described above, the embodiments of the present invention have been described with reference to the drawings. However, the present invention is not limited to the above-described embodiments, and can be implemented in various aspects without departing from the gist thereof. Also, by appropriately combining a plurality of components disclosed in the above-described embodiments, various inventions can be formed. For example, some components may be deleted from all the components shown in the embodiments. Furthermore, components from different embodiments may be appropriately combined. The drawings are schematically shown mainly for each component to facilitate understanding, and the thickness, length, number, interval, etc. of each illustrated component are different from the actual ones for convenience of drawing creation. Also, the speed, material, shape, dimensions, etc. of each component shown in the above-described embodiments are examples and are not particularly limited, and various changes can be made without substantially departing from the configuration of the present invention.

[0072] (1) In Embodiment 1, the sealing fan 100 includes the ozone generator 1A and the light source part 1B as the harmful substance control part 1. Also, in Embodiment 2, the sealing fan 100a includes the light source part 1BU and the light source part 1BD as the harmful substance control part 1. However, as long as the sealing fan includes the harmful substance control part 1, the sealing fan may include only the ozone generator 1A. In this case, the ozone generator 1A may be housed, for example, in the housing 30 of the mounting part 3 or in the housing 20 of the blower part 2. When the ozone generator 1A is housed in the housing 20, the housing 20 may further house a fan. As the fan housed in the housing 20 rotates, the ozone generated by the ozone generator 1A effectively circulates in the air.

[0073] (2) As an example of the harmful substance control device, the present invention has been described by taking the ceiling fan 100 as an example. However, the harmful substance control device may be, for example, a portable standing type or a stationary type circulator installed at a specific position.

[0074] (3) The air blowing unit 2 includes four blades 21. However, the air blowing unit 2 may include one blade 21, or may include a plurality of blades 21 other than four. Also, as long as the air blowing unit 2 generates an air flow, the air blowing unit 2 may not include the blades 21.

[0075] (4) The harmful substance control unit 1 may be able to adjust the control amount of the harmful substance SA. Specifically, for example, the ozone generator 1A can increase or decrease the amount of ozone emitted by the ozone generation unit 12. Also, for example, the light source unit 1B can increase or decrease the emission intensity of the ultraviolet rays emitted by the light source 14. That is, the amount (irradiation amount) of the ultraviolet rays emitted by the light source 14 can be increased or decreased. For example, when the user exits the room, the user operates the remote controller RC to transmit infrared rays corresponding to an instruction to increase the control amount of the harmful substance SA by the harmful substance control unit 1 toward the light receiving unit 6. Therefore, when the user is not present in the room, the control amount of the harmful substance SA by the harmful substance control unit 1 can be increased. As a result, for example, when the user is not present in the room, the harmful substance SA can be controlled in a short time.

[0076] (5) The sealing fan 100 may further include a detection unit for detecting a detected object. Specifically, the detection unit detects whether a detected object exists in a predetermined area. The detected object is, for example, a person or an animal. The detection unit includes, for example, a human sensor that detects infrared rays radiated from the detected object, and a control circuit that determines whether a detected object exists in a predetermined area based on the detection result of the human sensor. For example, according to the detection result and determination result of the detection unit, the supply of internal power to the harmful substance control unit 1 is stopped. Specifically, when the detection unit detects that a detected object exists in a predetermined area, the harmful substance control unit 1 stops operating. Therefore, when a detected object exists in a predetermined area, it is possible to prevent the detected object from being irradiated with ultraviolet rays or ozone from being released. Here, the detection unit may be, for example, a human sensor that detects infrared rays radiated from the detected object, a human sensor that transmits and receives electromagnetic waves to detect the detected object, or an imaging unit such as a camera.

[0077] (6) Further, the sealing fan 100 may further include a notification unit. The notification unit is, for example, an indicator. Specifically, the notification unit is, for example, an LED. The notification unit is disposed, for example, on the bottom surface 25 of the housing 20. For example, when the harmful substance control unit 1 is operating, the notification unit lights up. Also, for example, when the harmful substance control unit 1 is not operating, the notification unit turns off. Therefore, regarding whether ultraviolet rays that are difficult to visually observe are emitted into the air or whether ozone that is difficult to visually observe is released into the air, the user can recognize by looking at the notification unit. Note that the notification unit may turn off when the harmful substance control unit 1 is operating and turn on when the harmful substance control unit 1 is not operating. Also, when the harmful substance control unit 1 is operating, the notification unit may light up in a predetermined color (for example, red), and when the harmful substance control unit 1 is not operating, the harmful substance control unit 1 may light up in another predetermined color (for example, blue).

[0078] (7) In Embodiment 2, the sealing fan 100a includes the light source units 1BU and 1BD. However, the light source units 1BU and 1BD may be integrated or separate. Further, the sealing fan 100a may include a light source unit including a light source that emits ultraviolet rays in both directions. In this case, the light source emits ultraviolet rays, for example, in each of the direction toward the ceiling surface C and the direction away from the ceiling surface C.

[0079] (8) In Embodiment 1, the light source unit 1B is disposed in the blower unit 2. However, as long as the light source unit 1B emits ultraviolet rays, the light source unit 1B may be disposed, for example, in the mounting unit 3. Specifically, the light source unit 1B may be housed, for example, in the housing 30 of the mounting unit 3.

[0080] (9) When the light source control unit 53 causes the light source unit 1B to emit ultraviolet rays, the blower control unit 51 rotates the blade unit 21 in the first rotation direction R1 to generate an air flow F1 directed in the direction approaching the ceiling surface C. Also, when the ozone control unit 52 causes the ozone generator 1A to generate ozone, the blower control unit 51 rotates the blade unit 21 in the second rotation direction R2 to generate an air flow F2 directed in the direction away from the ceiling surface C. However, when the blower control unit 51 rotates the blade unit 21 in the first rotation direction R1, the ozone control unit 52 may cause the ozone generator 1A to generate ozone. Also, when the blower control unit 51 rotates the blade unit 21 in the second rotation direction R2, the light source control unit 53 may cause the light source unit 1B to emit ultraviolet rays.

[0081] (10) The user may operate the remote controller RC to transmit infrared rays towards the light receiving unit 6 according to an instruction to operate the harmful substance control unit 1. When the light receiving unit 6 receives the infrared rays according to the instruction to operate the harmful substance control unit 1, the ozone control unit 52 may generate ozone in the ozone generator 1A and the air blowing control unit 51 may rotate the blade unit 21 in the first rotation direction R1 according to the season, that is, according to the result of the date and time acquisition by the timer 54. Also, when the light receiving unit 6 receives the infrared rays according to the instruction to operate the harmful substance control unit 1, the light source control unit 53 may emit ultraviolet rays from the light source unit 1B and the air blowing control unit 51 may rotate the blade unit 21 in the second rotation direction R2 according to the result of the date and time acquisition by the timer 54.

[0082] (11) The opposing surface 26 of the housing 20 has an opening h1. However, as long as the light emitted by the light source 14 is emitted to the outside of the housing 20, the opposing surface 26 may be formed of a transparent material. When the opposing surface 26 is formed of a transparent material, the light emitted by the light source 14 passes through the opposing surface 26 and is emitted to the outside of the housing 20. Note that when the opposing surface 26 is formed of a transparent material, the opposing surface 26 may or may not have the opening h1.

Industrial Applicability

[0083] The present invention provides a harmful substance control device and has industrial applicability.

Explanation of Reference Numerals

[0084] 100 Ceiling fan (harmful substance control device) 1 Harmful substance control unit 1A Ozone generator 1B Light source unit 2 Air blowing unit 21 Blade unit 23 Motor (drive unit) 3 Mounting unit 4 Connecting unit C Ceiling surface F1 Airflow F2 Airflow

Claims

1. A ceiling fan capable of being mounted on a ceiling surface, a light source that emits ultraviolet rays, an ozone generator that generates ozone, a blower unit that generates an air flow, a mounting portion capable of being mounted on the ceiling surface, and a connecting portion that connects the mounting portion and the blower unit and comprising, the ozone generator is disposed in the mounting portion, the light source is disposed in the blower unit, a ceiling fan.

2. The blower unit includes a blade portion and a drive unit that rotates the blade portion, when the light source emits ultraviolet rays toward the ceiling surface, an air flow is generated in a direction approaching the ceiling surface in response to the drive unit rotating the blade portion in a first rotation direction, when the ozone generator generates ozone, an air flow is generated in a direction away from the ceiling surface in response to the drive unit rotating the blade portion in a second rotation direction opposite to the first rotation direction, the ceiling fan according to claim 1.

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