JP7659252B2 - Light Emitting Unit - Google Patents

Description

The present invention relates to a light-emitting unit that can be attached to a hair dryer, particularly a hair dryer.

In Japan alone, it is said that 17 million men and 5 million women are concerned about thinning hair. The applicant has been conducting joint research into hair growth and hair care using light and wind for several years with Dr. Kazuhiko Yoshizawa, director of Yotsuya Rose Clinic, a hospital specializing in hair growth, and the results were published by Dr. Yoshizawa in November 2019 as "Effectiveness of thinning hair care and hair care using LED light and warm air using a hair dryer equipped with a red LED: Study in mice and humans" (Diagnostics and New Drugs 2019; 56: 737-747).

In this research, a light-emitting unit was attached to a commercially available hair dryer, and it was demonstrated that LEDs of a specific wavelength and wind can be used to promote hair growth, promote hair care, and provide hair care. Sufficient procedures were followed, including mouse testing, human sensory testing, and human clinical trials. During this research, the applicant obtained Patent No. 6129392. In the patent specification (Patent Document 1), a hair care device in which a light-emitting unit is attached to the tip of a hair dryer is proposed.

Patent No. 6129392

The hair dryer described in Patent Document 1 has a detachable light-emitting unit at the tip, and of course employs a special structure for attaching the light-emitting unit.

On the other hand, considering that air blowers such as hair dryers are durable consumer goods and are not replaced frequently, it is necessary not only to promote the spread of dedicated air blowers, but also to take measures to utilize existing air blowers.

The present invention was made in consideration of this problem, and aims to provide a light-emitting unit that can be attached to an existing air blower.

The light-emitting unit of the present invention comprises a housing that incorporates a light-emitting element, and a mechanism for connecting the housing to a blower, the connecting mechanism comprising a mechanism for fixing the housing to the blower, and a mechanism for adjusting at least one of the irradiation position of the light from the light-emitting element on the target and the wind direction of the blower while the housing is fixed to the blower by the fixing mechanism.

The light-emitting unit of the present invention can be applied to multiple types of existing air blowers.

FIG. 2 is a perspective view showing a state in which the light-emitting unit of the first embodiment is attached to a hair dryer. FIG. 2 is a side view of the light-emitting unit according to the first embodiment. FIG. 2 is a front view of the light-emitting unit according to the first embodiment. FIG. 2 is a top view of the light-emitting unit according to the first embodiment. FIG. 2 is a perspective view showing a state in which a housing and a coupling mechanism of the first embodiment are separated. 2 is an XZ cross-sectional view of the light-emitting unit of the first embodiment. FIG. 13 is a perspective view showing a state in which the housing and the coupling mechanism are coupled together in the light-emitting unit of the second embodiment. FIG. 13 is a perspective view showing a state in which the housing and the coupling mechanism are separated in the light-emitting unit of the second embodiment. FIG. 9A and 9B are YZ cross-sectional views showing the light emitting unit of the second embodiment in a state where the housing and the coupling mechanism are separated and coupled, respectively. FIG. 11 is a perspective view showing a state in which the housing and the coupling mechanism are coupled together in the light-emitting unit of the third embodiment. FIG. 11 is a perspective view showing a state in which the housing and the coupling mechanism are separated in the light-emitting unit of the third embodiment. FIG. 13 is a perspective view showing a state in which the housing and the coupling mechanism are coupled together in the light-emitting unit of the fourth embodiment. FIG. 13 is a perspective view showing a state in which the housing and the coupling mechanism are separated in the light-emitting unit of the fourth embodiment. FIG. 13 is an XZ cross-sectional view of the light-emitting unit of the fourth embodiment. 13 is a perspective view showing a state in which the housing and the coupling mechanism are separated in the light-emitting unit of the fifth embodiment. FIG. FIG. 13 is a perspective view showing a state in which the housing and the coupling mechanism are coupled together in the light-emitting unit of the fifth embodiment. 17(a) to 17(c) are XZ cross-sectional views showing how the housing and the coupling mechanism are coupled to each other in the light emitting unit of the fifth embodiment. FIG. 13 is a perspective view showing a modified example of the light-emitting unit of the fifth embodiment.

In the following drawings, the same or equivalent components and parts are given the same reference numerals and descriptions are omitted where appropriate.

First Embodiment
FIG. 1 is a perspective view showing a state in which the light-emitting unit 100 of the first embodiment is attached to the dryer 200. In FIG. 1, the X-axis indicates the airflow direction of the dryer 200. The dryer 200 of FIG. 1 is a commercially available general dryer, and does not have a dedicated structure for attaching the light-emitting unit 100. The light-emitting unit 100 irradiates light onto the scalp part exposed by the air of the dryer 200, thereby more effectively exerting the hair growth effect by light. The light-emitting unit 100 is attached to, for example, the tip 201 of the dryer 200. In this embodiment, the light-emitting unit 100 is fixed to the dryer 200 by fastening the fastening member 130 of the light-emitting unit 100 to the tip 201 of the dryer 200. In this way, by attaching the light-emitting unit 100 to the tip 201 of the dryer 200, it becomes easy to irradiate the scalp with light emitted by the light-emitting element 112 of the light-emitting unit 100 described later, while directing the airflow of the dryer 200 toward the hair and scalp. In addition, in the standard mounting position of the light-emitting unit 100 on the dryer 200 as shown in FIG. 1, the center of gravity G of the secondary battery 113 described later is closer to the handle 202 than the installation position of the light-emitting element 112 in the airflow direction (x-axis direction) of the dryer 200. Since the secondary battery 113 is relatively heavy among the components of the light-emitting unit 100, it is moved closer to the handle 202 to reduce the moment during use and reduce the load on the user. In addition, an example of the target of light irradiation is the scalp, but this is not limited to this, and the skin of any part can be used. The dryer of this embodiment is an example of a blowing device.

Figure 2 is a side view of the light-emitting unit 100 of this embodiment, Figure 3 is a front view thereof, and Figure 4 is a top view thereof. Figure 5 is a rear perspective view of the light-emitting unit 100 with the housing 110 and the coupling mechanism 120 removed. In the following figures, the horizontal direction perpendicular to the X-axis is the Y-axis, and the direction perpendicular to the X-axis and Y-axis is the Z-axis. The light-emitting unit 100 comprises a housing 110 and a coupling mechanism 120 that couples the housing 110 to the dryer 200. The housing 110 and the coupling mechanism 120 are configured to be detachable.

The housing 110 includes a lens 111, a light-emitting element 112, a secondary battery 113, a switch 114, and a connector 115. The housing 110 is configured, for example, in a cylindrical shape. For example, in this embodiment, the dimension of the housing 110 in the X direction from the front end 110a to the rear end 110b is 96.5 mm, and the maximum diameter of the cylindrical shape is 28 mm.

Lens 111 is, for example, a Fresnel lens or a convex lens, and is attached to tip 110a of housing 110. Lens 111 is disposed on the front side of light-emitting element 112 so that light emitted from light-emitting element 112 is incident on it, and is disposed so that its optical axis coincides with the optical axis of the light emitted from light-emitting element 112. The light emitted by light-emitting element 112 is collected by lens 111 and released.

The light emitting element 112 is an LED or the like, and is built into the housing 110. The expected irradiation distance of the light emitting unit 100 is in the range of 50 to 150 mm from the lens 111.

The secondary battery 113 is a lithium ion battery or the like, and is built into the housing 110. The secondary battery 113 is connected to the light-emitting element 112 and supplies power to the light-emitting element 112.

The switch 114 is used to instruct the light-emitting element 112 to light up.

A connector 115 is provided at the rear end 110b of the housing, which is located on the opposite side in the X direction from the front end 110a (see FIG. 4, for example). A cable (not shown) that supplies power to the secondary battery 112 is attached to and detached from the connector 115. At the end of the cable is an AC/DC adapter (not shown), and a direct current voltage is applied to the connector 115. This charges the secondary battery 113.

The coupling mechanism 120 includes a fastening member 130 and an orientation adjustment mechanism 140.

The fastening member 130 is configured to be able to fix the housing 110 to the dryer 200 in a direction in which the light of the light emitting element 112 faces the front of the dryer 200. The fastening member 130 of this embodiment fastens the tip portion 201 of the dryer 200 to fix the housing 110. The fastening member 130 of this embodiment is made of, for example, silicon, and has a band 131, a plurality of insertion holes 132 provided in the band 131, and a plurality of protrusions 133 provided in the band 131 and configured to be able to be inserted into the insertion holes 132. After wrapping and fastening the band 131 around any part of the dryer 200, the protrusions 133 are inserted into the insertion holes 132, thereby fixing the housing 110 to the dryer 200. The fastening member 130 may be provided with urethane or other flexible or adhesive material on the surface portion that comes into contact with the dryer 200. The fastening member 130 of this embodiment is an example of a fixing mechanism.

The orientation adjustment mechanism 140 is configured to adjust the position at which the light from the light-emitting element 112 irradiates the scalp by adjusting the direction of the light from the light-emitting element 112 while the housing 110 is fixed to the dryer 200 by the fastening member 130. The orientation adjustment mechanism 140 of this embodiment is an example of an adjustment mechanism.

Figure 5 is a perspective view showing the state in which the housing 110 and the coupling mechanism 120 are separated, and Figure 6 is an X-Z cross-sectional view of the light-emitting unit 100 of the first embodiment. The orientation adjustment mechanism 140 of this embodiment includes a coupling portion 141 and a base portion 142 on which the coupling portion 141 is placed.

The coupling portion 141 is provided integrally with the housing 110 in order to mount and couple the housing 110 to the coupling mechanism 120. Referring to FIG. 6, the coupling portion 141 of this embodiment includes a spherical recess 141a and incorporates a steel plate 141b. The steel plate 141b of this embodiment is an example of a ferromagnetic member. The steel plate 141b can be substituted with a metal plate made of a ferromagnetic material other than steel.

The base portion 142 is provided integrally with the band 131 so that the recessed portion 141a of the connecting portion 141 is placed thereon. In this embodiment, the base portion 142 includes a spherical protruding portion 142a and has a built-in magnet 142b. The magnet 142b is, for example, a neodymium magnet.

The spherical convex portion 142a is configured to fit into the spherical concave portion 141a. The housing 110 is coupled to the coupling mechanism 120 by fitting the concave portion 141a and the convex portion 142a together. At this time, the magnet 142b attracts the steel plate 141b with its magnetic force. Since the concave portion 141a and the convex portion 142a are each formed in a spherical shape, the housing 110 operates to slide along the spherical surface of the convex portion 142a. Therefore, while the fitted state of the concave portion 141a and the convex portion 142a is maintained by the magnetic force, the housing 110 can rotate around the convex portion 142a in any of the tilt direction (X-Z direction), pan direction (Y-X direction), and roll direction (Y-Z direction).

Here, in order to effectively achieve the hair growth effect by the air blown by the dryer 200 and the light emitted by the light-emitting unit, it is necessary to install the light-emitting unit in a position on the dryer 200 that can effectively irradiate light onto the scalp area to which the dryer 200 is blowing air. However, commercially available dryers 200 come in a wide variety of shapes. Therefore, depending on the shape of the dryer 200 at the installation location, light may not be effectively irradiated onto the air-blowing area of the dryer 200, and a sufficient hair growth effect may not be achieved.

According to this embodiment, it is possible to adjust the position where the light from the light-emitting element 112 is irradiated on the scalp. This makes it easier to irradiate the light from the light-emitting element 112 to the air-blowing point of the dryer 200. This relaxes the restrictions on the installation position of the dryer 200, making it easier to use while still providing a sufficient hair growth effect.

According to this embodiment, the housing 110 is rotatably coupled to the coupling mechanism 120 with the spherically formed recess 141a and protrusion 142a fitted together. According to this configuration, in particular, the housing 110 can rotate in the tilt direction and pan direction around the protrusion 142a (see FIGS. 4 and 6). Therefore, even if the light-emitting unit 100 is attached to a location whose central axis is an axis that is approximately perpendicular to the airflow direction (X direction in this embodiment), such as the handle of the dryer 200, it becomes easier to irradiate the light of the light-emitting element 112 to the airflow location of the dryer 200. Therefore, the installation position of the light-emitting unit 100 on the dryer 200 can be selected more flexibly, which increases convenience.

In this embodiment, the connection between the housing 110 and the coupling mechanism 120 is maintained by the magnet 142b attracting the steel plate 141b when the recess 141a and the protrusion 142a are fitted together. With this configuration, the connection between the housing 110 and the coupling mechanism 120 is maintained by the magnetic force acting between the magnet 142b and the steel plate 141b, so that the housing 110 is prevented from coming off the coupling mechanism 120 when adjusting the light direction of the light emitting element 112.

According to this embodiment, the housing 110 houses the secondary battery 113, and the housing 110 and the coupling mechanism 120 are detachably coupled. If the housing 110 and the coupling mechanism 120 cannot be detached, the secondary battery 113 must be charged with the coupling mechanism 120 attached to the dryer 200, or the coupling mechanism 120 must be removed from the dryer 200 before charging. Since the dryer 200 is relatively large and heavy, this is a burden on the operator. With this configuration, the housing 110 and the coupling mechanism 120 are detachable, so that charging is possible with the simple action of removing the housing 110 and the coupling mechanism 120, thereby reducing the workload during charging.

The following describes the modified examples.

In the embodiment, the irradiation position of the light emitting element 112 on the scalp is adjusted by adjusting the direction of the light of the light emitting element 112, but this is not limited to this. For example, the housing 110 may be attached to one end of a stretchable member and the coupling mechanism 120 may be attached to the other end, and the position of the housing 110 relative to the dryer 200 may be adjusted to adjust the irradiation position of the light emitting element 112 on the scalp. In the embodiment, the irradiation position of the light emitting element 112 on the scalp is adjusted, but this is not limited to this. For example, the light emitting unit 100 may be provided with a mechanism for adjusting the wind direction of the dryer 200, so that the wind of the dryer 200 hits the irradiation position of the light emitting element 112 on the scalp. In this case, for example, a mechanism including a rotatable wind direction plate may be provided in the light emitting unit 100 so that the wind direction of at least one of the X direction and Y direction of the air blown by the dryer 200 can be adjusted, and this mechanism may be disposed at the tip 201 of the dryer 200. In summary, the orientation adjustment mechanism 140 adjusts at least one of the irradiation position of the light from the light-emitting element 112 on the target and the airflow direction of the dryer 200 while the housing 110 is fixed to the dryer 200 by the fastening member 130.

In the embodiment, an LED is used as the light-emitting element 112, but other types of light-emitting elements such as semiconductor laser diodes and organic EL elements may be used. Although one light-emitting element 112 is used, it is of course possible to use multiple light-emitting elements, and it may include an array or matrix shape.

In the embodiment, the housing 110 is configured to have a cylindrical shape, but is not limited to this. For example, the housing 110 may be configured to have a polygonal shape, a spherical shape, a conical shape, a polygonal pyramid shape, or any other shape.

The arrangement of the switch 114, connector 115, etc. may be changed as appropriate to suit the design of the light-emitting unit 100.

In the embodiment, the coupling portion 141 is integral with the housing 110, but may be provided separately.

In the embodiment, the coupling portion 141 includes a recess 141a and the base portion 142 includes a protrusion 142a, but this is not limited thereto. The coupling portion 141 may include a protrusion 142a and the base portion 142 may include a recess 141a. Also, in the embodiment, the coupling portion 141 includes a steel plate 141b and the base portion 142 includes a magnet 142b, but this is not limited thereto. The coupling portion 141 may include a magnet 142b and the base portion 142 may include a steel plate 141b.

In the embodiment, the dryer 200 is used as the blower device, but this is not limited thereto. For example, a portable electric fan may be used as the blower device.

Second Embodiment
A second embodiment of the present invention will be described below. In the drawings and descriptions of each embodiment below, the same components and members as those in the first embodiment are denoted by the same reference numerals. Descriptions that overlap with the first embodiment will be omitted as appropriate, and the description will focus on the configurations that differ from the first embodiment.

Figure 7 is a perspective view showing the state in which the housing 110 and the coupling mechanism 120 are coupled in the light-emitting unit 100 of the second embodiment. Figure 8 is a perspective view showing the state in which the housing 110 and the coupling mechanism 120 are separated in the light-emitting unit 100 of the second embodiment. Figure 9(a) is a Y-Z cross-sectional view showing the state in which the housing 110 and the coupling mechanism 120 are separated in the light-emitting unit 100 of the second embodiment. Figure 9(b) is a Y-Z cross-sectional view showing the state in which the housing 110 and the coupling mechanism 120 are coupled in the light-emitting unit 100 of the second embodiment.

The band 131 of the second embodiment is made of an elastic material such as silicone, elastomer, or rubber that can be pushed open by hand. A hook 136 is provided on one end of the band 131 of the fastening member 130. The light-emitting unit 100 is fixed to the dryer 200 by wrapping the band 131 around any part of the dryer 200 and hooking the hook 136 into the insertion hole 132 provided on the other end side.

The connecting portion 141 and the convex portion 142a of the base portion 142 in the second embodiment are formed in a semi-cylindrical shape with the Y direction as the central axis. The concave portion 141a of the connecting portion 141 extends in the X direction at the center in the Y direction. When the semi-cylindrical convex portion 142a is inserted into the concave portion 141a, as shown in Figures 9(a) and 9(b), the shaft portion 142c protruding on both sides in the Y direction provided on the convex portion 142a fits into the bearing portion 141c recessed on both sides in the Y direction provided on the concave portion 141a. This allows the housing 110 to be connected to the connecting mechanism 120 so that it can rotate in the tilt direction. Furthermore, in this connected state, the magnet 142b magnetically attracts the steel plate 141b, thereby maintaining this connected state.

In order to facilitate rotation of the housing 110 in the tilt direction relative to the coupling mechanism 120 when the housing 110 and the coupling mechanism 120 are coupled, the coupling portion 141 and the protruding portion 142a of the base portion 142 are semi-cylindrical, but they may be of any shape.

Third Embodiment
A third embodiment of the present invention will now be described. Fig. 10 is a perspective view showing a state in which the housing 110 and the coupling mechanism 120 are coupled in the light-emitting unit 100 of the third embodiment. Fig. 11 is a perspective view showing a state in which the housing 110 and the coupling mechanism 120 are separated in the light-emitting unit 100 of the third embodiment.

In the third embodiment, the housing 110 is formed in an ellipsoidal (egg-shaped) shape. In the third embodiment, the coupling portion 141 has a spherical convex portion 142a, and the base portion 142 has a spherical concave portion 141a.

In the third embodiment, the band 131 of the fastening member 130 is made of an elastic material such as silicon, elastomer, or rubber that can be pushed open by hand, and the tip 131a is split for pushing open. The diameter of the band 131 is made smaller than the expected tip diameter of the dryer 200, but the optimal value depends on the flexibility and strength of the band 131, and can be determined by experiment. A plurality of spacers 134 (e.g., three at an angle of 120 degrees) made of a flexible material such as silicon may be provided to fasten the dryer 200. In this embodiment, the material and inner diameter of the band 131 and the material and height of the spacer 134 can be optimally determined by experiment. In the third embodiment, the band 131 is pushed open, and the tip 201 of the dryer 200, for example, is placed in the pushed-open part, and then the pushing open is stopped, and the dryer 200 is fastened by the band 131.

Fourth Embodiment
A fourth embodiment of the present invention will be described below. Fig. 12 is a perspective view showing a state in which the housing 110 and the coupling mechanism 120 are coupled in the light-emitting unit 100 of the fourth embodiment. Fig. 13 is a perspective view showing a state in which the housing 110 and the coupling mechanism 120 are separated in the light-emitting unit 100 of the fourth embodiment. Fig. 14 is a side cross-sectional view of the light-emitting unit 100 of the fourth embodiment.

In the fourth embodiment, the housing 110 is formed in a semicircular shape when viewed in the Y direction (see FIG. 14). The joint 141 of the housing 110 is formed by the entire bottom of the housing 110, and the entire bottom surface of the joint 141 forms a convex portion 142a. The base portion 142 has a spherical concave portion 141a.

In the fourth embodiment, the band 131 of the fastening member 130 has annular portions 135 arranged side by side on one side and the other side in the X direction. The diameter of the annular portion 135 of the band 131 is made smaller than the expected diameter of the tip of the dryer 200, but the optimal value depends on the flexibility and strength of the band 131 and can be determined by experiment. In the fourth embodiment, for example, the tip portion 201 of the dryer 200 is inserted into the two annular portions 135, whereby the dryer 200 is fastened by the band 131.

As shown in FIG. 14, the housing 110 is coupled to the coupling mechanism 120 by placing the convex portion 142a of the housing 110 on the concave portion 141a of the coupling portion 141. Since the convex portion 142a is formed in a semicircular shape when viewed in the Y direction, the housing 110 can rotate in the tilt direction (X-Z direction).

Fifth Embodiment
A fifth embodiment of the present invention will be described below. Fig. 15 is a perspective view showing a state in which the housing 110 and the coupling mechanism 120 are coupled in the light-emitting unit 100 of the fifth embodiment. Fig. 16 is a perspective view showing a state in which the housing 110 and the coupling mechanism 120 are separated in the light-emitting unit 100 of the fifth embodiment. Figs. 17(a) to 17(c) are XZ cross-sectional views showing how the housing 110 and the coupling mechanism 120 are coupled in the light-emitting unit 100 of the fifth embodiment.

The coupling mechanism 120 of the fifth embodiment has a hinge 143 that is attached to the housing 110 and the dryer 200. Specifically, the orientation adjustment mechanism 140 of the fifth embodiment includes the hinge 143 and a base portion 142 on which the hinge 143 is placed. The hinge 143 has a hinge shaft portion 143a that is attached to the hinge attachment portion 116 provided on the housing 110, and a flat plate portion 143b. The base portion 142 of the fifth embodiment does not have the above-mentioned convex portion 142a, etc., and has a flat plate insertion portion 142d into which the flat plate portion 143b of the hinge 143 can be inserted.

Refer to Figures 17(a) to 17(c). The flat plate portion 143b of the hinge 143 is inserted into the flat plate insertion portion 142d, and the hinge 143 is fixed to the dryer 200 via the flat plate insertion portion 142d. When the flat plate portion 143b is inserted into the flat plate insertion portion 142d, the housing 110 can rotate in the XZ direction around the hinge shaft portion 143a, and this allows the direction of light from the light-emitting unit 100 to be adjusted. Note that, for the sake of simplicity, an example in which the base portion 142 and the flat plate insertion portion 142d are separated is shown in Figures 17(a) to 17(c), but the base portion 142 and the flat plate insertion portion 142d may be configured as an integral unit.

Figure 18 is a perspective view of a modified example of the fifth embodiment. For simplicity, the fastening member 130 has been omitted from Figure 18. In the examples of Figures 15 to 17, the housing 110 and the hinge mounting portion 116 are integrally configured, but the housing 110 and the hinge mounting portion 116 may be configured separately. In this case, for example, the housing 110 and the hinge mounting portion 116 are configured to be detachable by magnetism. Also, the bottom of the hinge 143 and the base portion 142 may be configured to be detachable by magnetism, for example, without having the flat plate portion 143b and the flat plate insertion portion 142d.

100 Light emitting unit, 110 Housing, 111 Lens, 112 Light emitting element, 113 Secondary battery, 114 Switch, 115 Connector, 116 Hinge mounting portion, 120 Joining mechanism, 130 Fastening member, 131 Band, 132 Insertion hole, 133 Protrusion, 140 Orientation adjustment mechanism, 141 Joining portion, 142 Base portion, 143 Hinge, 200 Dryer.

Claims (10)

A housing incorporating a light emitting element that emits light for hair growth;
a mechanism for connecting the housing and a blower;
Equipped with
The coupling mechanism comprises:
a mechanism for fixing the housing to the blower;
a mechanism for adjusting an irradiation position of the light of the light emitting element on a scalp while the housing is fixed to the blower by the fixing mechanism;
Equipped with
the fixing mechanism is configured to fix the housing to the air blower in a direction in which light from the light-emitting element is directed forward of the air blower;
The light-emitting unit is characterized in that the adjusting mechanism is configured to adjust the direction of light of the light-emitting element only in a tilt direction. 2. The light emitting unit according to claim 1,
The adjusting mechanism includes:
a coupling portion provided on the housing, the coupling portion having a semi-cylindrical protrusion having a central axis in a horizontal direction perpendicular to the concave portion and the optical axis of the light emitting element;
a base portion on which the coupling portion is placed and having one of the recessed portion and the protruding portion that fits into the other of the recessed portion and the protruding portion,
The housing is coupled to the coupling mechanism so as to be rotatable in a tilt direction with the recess and the protrusion fitted together. 2. The light emitting unit according to claim 1,
The housing is formed in a semicircular shape when viewed in a horizontal direction perpendicular to an optical axis of the light emitting element,
The adjusting mechanism includes:
a coupling portion provided on the housing, the coupling portion having a protruding portion on the entire bottom surface of the housing;
a base portion on which the coupling portion is placed and which has a spherical recess;
The housing is coupled to the coupling mechanism so as to be rotatable in a tilt direction with the recess and the protrusion fitted together. 4. The light-emitting unit according to claim 2,
one of the coupling portion and the base portion includes one of a magnet and a ferromagnetic member,
the other of the coupling portion and the base portion includes the other of the magnet and the ferromagnetic member,
A light emitting unit, wherein the connection between the housing and the connecting mechanism is maintained by the magnet attracting the ferromagnetic member with the recess and protrusion fitted together. 2. The light emitting unit according to claim 1,
The coupling mechanism includes a hinge.
The hinge is attached to the housing and the blower device,
The housing is rotatable about the axis of the hinge. 6. The light-emitting unit according to claim 1,
The housing contains a secondary battery,
The housing and the coupling mechanism are removably coupled to the light emitting unit. A light-emitting unit according to any one of claims 1 to 6, wherein the fixing mechanism is a fastening member that fixes the housing by fastening a part of the air blower. The light-emitting unit according to claim 7, wherein the fixing mechanism includes a band for wrapping around a part of the air blower and fastening it, and a fixing part for wrapping the band around a part of the air blower and fastening it in a fastened state. 8. The light-emitting unit according to claim 7, wherein the fixing mechanism comprises a band made of a pushable elastic material and spacers provided on both ends of the band;
In the light emitting unit, after a part of the air blower is disposed in the part where the band is pushed open while the band is pushed open, the air blower is tightened by the band by stopping the pushing open. 8. The light-emitting unit according to claim 7, wherein the fixing mechanism includes a band having two annular portions arranged side by side on one side and the other side of the air blowing direction of the air blowing device when the housing is fixed to the air blowing device by the fixing mechanism,
The light-emitting unit, wherein the blower is fastened by the band by inserting a part of the blower into the two annular portions.

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