JP2019046609A - Lighting device for bathroom - Google Patents

Abstract

To provide a lighting device for bathroom capable of making the fluctuation of a water surface look beautiful.SOLUTION: A lighting device (1) for bathroom includes: a lighting unit (10) for radiating light; and a limit member (20) for limiting the light radiated from the lighting unit. The limit member does not directly radiate the light radiated from the lighting unit on a wall surface of a bathroom but it radiates the light toward a water surface of a bathtub and illuminates the bathroom by the light reflected on the water surface. With this constitution, the light can be radiated to the water surface of the bathtub while preventing the light radiated from the lighting unit from being directly radiated on the wall surface of the bathroom. Thus, by illuminating the bathroom by the light reflected on the water surface, the fluctuation of the water can be made to look beautiful.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a bathroom lighting device that emits light toward the water surface of a bathtub.

  In recent years, a bathroom lighting device is disclosed that obtains a fantastic rendering effect by irradiating the water surface of a bath with light and illuminating the ceiling or wall of the bathroom with light reflected from the water surface (see, for example, Patent Document 1) ).

  Patent Document 1 discloses a lighting device that emits light to the water surface of a bathtub using a spotlight attached to the ceiling of a bathroom.

JP 2003-97064

  However, in the lighting device of Patent Document 1, there is still room for improvement in that the fluctuation of the water surface looks beautiful.

  The present invention solves the above-mentioned problem, and provides a bathroom lighting device that can make the fluctuation of the water surface look beautiful.

The bathroom lighting device according to one aspect of the present disclosure is:
A lighting unit that emits light;
A restricting member for restricting light emitted from the lighting unit;
Equipped with
The limiting member does not directly irradiate the wall surface of the bathroom with the light emitted from the lighting unit but directs the light toward the water surface of the bath and illuminates the inside of the bathroom with the light reflected by the water surface.

  As described above, according to the bathroom lighting device of the present invention, it is possible to make the fluctuation of the water surface look beautiful.

FIG. 1 is an exploded perspective view of a bathroom lighting device according to a first embodiment of the present invention. FIG. 2 is a schematic cross-sectional view showing the configuration of the bathroom lighting device of FIG. FIG. 3 is an exploded perspective view of the limiting member. FIG. 4 is a schematic view of the cover body as viewed from below. FIG. 5 is a view of the bathroom attached with the bathroom lighting device of FIG. 1 as viewed from the ceiling side. FIG. 6 is a side view of the bathroom to which the bathroom lighting device of FIG. 1 is attached. FIG. 7 is a schematic cross-sectional view of a bathroom lighting device of a modified example. FIG. 8 is a schematic cross-sectional view of another modified bathroom lighting device. FIG. 9 is a schematic view of a lens for focusing the light emitted from the illumination unit.

(Circumstances leading to the present invention)
In the lighting device disclosed in Patent Document 1, since the light of the spotlight is irradiated, the irradiation range of the light is expanded, and the water surface of the bath can not be irradiated with sufficient light. Moreover, since the light of a spotlight is directly irradiated to the wall surface of a bathroom, the reflection of the reflected light from the water surface is obstructed and the fluctuation of water can not be shown beautifully.

  Therefore, the present inventor has found a configuration in which light is directed toward the water surface of the bath without directly irradiating the wall of the bathroom by restricting the light emitted from the illumination unit by the limiting member, as described below It came to the invention.

  Hereinafter, embodiments will be described with reference to the attached drawings. Moreover, in each figure, in order to make description easy, each element is shown exaggeratingly.

Embodiment 1
[overall structure]
The entire configuration of the bathroom lighting device according to the first embodiment will be described.

  FIG. 1 is an exploded perspective view of a bathroom lighting device 1 according to a first embodiment of the present invention. FIG. 2 is a schematic cross-sectional view showing the configuration of the bathroom lighting device of FIG. The central axis CL1 in FIGS. 1 and 2 indicates a line passing through the center of each component. As shown in FIG. 1 and FIG. 2, the bathroom lighting device 1 is a lighting device that emits light toward the water surface of the bath and illuminates the inside of the bathroom with the light reflected by the water surface. And a member 20. In the first embodiment, the bathroom illumination device 1 is attached to the ceiling 51 of the bathroom, and the optical axis of the light emitted from the illumination unit 10 is perpendicular to the ceiling surface. That is, in the first embodiment, the optical axis of the light emitted from the illumination unit 10 coincides with the central axis CL1.

<Lighting unit>
The lighting unit 10 has a light source for emitting light. Although it does not specifically limit as a light source, For example, a light emitting diode (LED), an incandescent lamp, etc. are mentioned.

  The lighting unit 10 is disposed in the ceiling. The lighting unit 10 emits light into the bathroom through the opening 52 provided in the ceiling 51. As described above, in the bathroom lighting device 1, the space for arranging the lighting unit 10 having the light source is formed on the back side of the ceiling.

  In the first embodiment, the lighting unit 10 is attached to the back side of the ceiling via the reinforcing wood 11, the holder nut 12, and the metal plate 13.

  The reinforcement wood 11 is flat wood and is disposed on the back of the ceiling. The reinforcing wood 11 is formed with a circular through hole at a position corresponding to the opening 52 of the ceiling 51.

  The holder nut 12 is composed of a cylindrical body and a flat plate member extending radially outward at one end of the cylindrical body. Further, inside the holder nut 12, a screw portion screwed with the limiting member 20 is formed. The cylindrical body of the holder nut 12 is disposed inside the opening 52 of the ceiling 51 through the through hole of the reinforcing wood 11. Further, the holder nut 12 is fixed by holding the flat plate member between the reinforcing wood 11 and the metal plate 13.

  The metal plate 13 is formed in a flat plate shape. The metal plate 13 holds the flat plate member of the holder nut 12 together with the reinforcing wood 11. The metal plate 13 is fixed to the ceiling together with the reinforcing wood 11 by a fixing tool such as a tapping screw 14. Further, the lighting unit 10 is attached to the metal plate 13 by a fixing tool such as a screw. The metal plate 13 is formed with a circular through hole at a position corresponding to the opening 52 of the ceiling 51.

  The light emitted from the lighting unit 10 is incident on the limiting member 20 through the through hole of the metal plate 13, the inside of the holder nut 12, and the opening 52 of the ceiling 51.

<Limiting member>
The limiting member 20 is a member that limits the light emitted from the lighting unit 10. The limiting member 20 radiates the light emitted from the lighting unit 10 toward the water surface of the bath. Specifically, the limiting member 20 limits the light emitted from the lighting unit 10 to the irradiation range having the longitudinal direction and the short direction according to the shape of the bath. Thereby, light can be irradiated to a water surface, preventing that the light irradiated from lighting unit 10 is directly irradiated to the wall surface of a bathroom. As a result, it is possible to illuminate the wall of the bathroom with the light reflected from the water surface and to beautifully reflect the fluctuation of the water.

  The restriction member 20 is attached to the opening 52 of the ceiling 51 via the water blocking packing 15 and the non-slip packing 16 in the bathroom.

  FIG. 3 is an exploded perspective view of the limiting member 20. FIG. As shown in FIG. 3, the limiting member 20 includes a cover 21, a light shielding member 22, and a holder 23. In the present specification, the holder 23 and the light shielding member 22 may be referred to as a “cylindrical member”.

  The cover body 21 is formed of a bottomed cylindrical member. The cover 21 is a circular lid that covers the opening 52 of the ceiling 51 in the bathroom. The thickness of the cover 21 is designed to be smaller than the diameter of the cover 21. At the bottom of the cover body 21 is formed a transmission hole 24 through which light emitted from the lighting unit 10 through the opening 52 is transmitted. In the first embodiment, the cover body 21 is disposed outside the opening 52 of the ceiling 51 and covers the opening 52.

  FIG. 4 is a schematic view of the cover body 21 as viewed from below. As shown in FIG. 4, the transmission holes 24 are formed at positions eccentric to the optical axis of the lighting unit 10. By decentering the position of the transmission hole 24 with respect to the optical axis of the illumination unit 10, the direction of light emitted through the transmission hole 24 can be changed. In the first embodiment, since the optical axis of the illumination unit 10 and the central axis CL1 coincide with each other, the transmission hole 24 is formed at a position eccentric to the center C1 of the cover body 21. Specifically, the transmission hole 24 is formed at a position close to the bathtub side.

  In the first embodiment, as shown in FIG. 2, the light emitted from the illumination unit 10 passes through the inside of the opening 52 in the direction D1 along the central axis CL1 coinciding with the optical axis. The light is irradiated by the transmission holes 24 in the diagonal direction D2 with respect to the central axis CL1.

  The shape of the through hole 24 is determined according to the shape of the bath. Specifically, the shape of the transmission hole 24 is determined so as to irradiate the water surface of the bath while preventing the light emitted from the lighting unit 10 from being directly irradiated to the wall surface of the bathroom. In the first embodiment, the transmission holes 24 are formed in the shape of long holes corresponding to the longitudinal direction and the short side direction of the bath. The long hole shape may be, for example, an oval shape or a rectangular shape.

  Returning to FIG. 3, the cover body 21 includes a plurality of positioning pins 25 for positioning the light shielding member 22, and a plurality of convex portions 26 protruding inward in the radial direction for engaging the holder 23.

  The light blocking member 22 is a member that blocks light so that the light irradiated from the illumination unit 10 does not transmit the cover body 21. The light shielding member 22 includes a disk-shaped light shielding plate 27 and a cylindrical body 28. The light blocking member 22 is formed of, for example, a black member in order to block light. The light blocking member 22 may be formed of a member capable of blocking light, and is not limited to a black member.

  The light shielding plate 27 is configured to be housed inside the cover body 21. Specifically, the light shielding plate 27 is inserted into the inside of the cover body 21 with the concave portion formed on the peripheral edge portion of the light shielding plate 27 aligned with the position of the convex portion 26 of the cover body 21. Next, the light shielding plate 27 is rotated, and the positioning pins 25 of the cover body 21 are inserted into the positioning holes 29 of the light shielding plate 27. Thus, the light shielding plate 27 is housed inside the cover body 21. At this time, the positioning pin 25 of the cover body 21 can be easily inserted into the positioning hole 29 by holding the cylindrical body 28 and rotating the light shielding plate 27.

  Further, through holes 30 are formed in the light shielding plate 27 at positions corresponding to the transmission holes 24 of the cover body 21. Specifically, as shown in FIG. 2, in the state where the light shielding plate 27 is housed inside the cover body 21, the through hole 30 of the light shielding plate 27 is positioned right above the transmission hole 24 of the cover body 21. . Thus, the light emitted from the lighting unit 10 is emitted toward the water surface of the bath through the through holes of the light shielding plate 27 and the transmission holes 24 of the cover 21. In the first embodiment, the through holes of the light shielding plate 27 are formed to be larger than the shape of the transmission holes 24 of the cover body 21.

  Returning to FIG. 3, the cylindrical body 28 is formed to project from the center of the light shielding plate 27 so as to surround the through hole of the light shielding plate 27. The cylindrical body 28 shields the light emitted from the lighting unit 10 and prevents the light from leaking from the gap between the ceiling 51 and the cover body 21 or the like. Further, the cylindrical body 28 is formed to have a dimension to be inserted into the holder 23. By inserting the cylindrical body 28 into the inside of the holder 23, a double structure of the cylindrical body 28 and the holder 23 is formed, and light is less likely to leak to the outside.

  The holder 23 is a cylindrical member attached to the inside of the opening 52 of the ceiling 51. Specifically, a threaded portion is formed on the outer periphery of the holder 23 and is screwed with the threaded portion of the holder nut 12. Thereby, the holder 23 is attached to the inside of the opening 52 via the water blocking packing 15 and the non-slip packing 16.

  The holder 23 can accommodate the cylindrical body 28 of the light shielding member 22 inside. Further, a plurality of flange portions 31 extending outward in the radial direction are formed on the peripheral edge of the end of the holder 23 on the side in contact with the light shielding member 22. The plurality of flanges 31 are formed with a gap therebetween. The gap is designed to allow passage of the projection 26 of the cover 21.

  The holder 23 is inserted into the inside of the cover body 21 with the gaps of the plurality of flange portions 31 aligned with the positions of the convex portions 26 of the cover body 21. Next, the cover body 21 is rotated, and the plurality of convex portions 26 of the cover body 21 are engaged with the plurality of flange portions 31 of the holder 23. Thus, the cover body 21 is attached to the holder 23.

  The plurality of projections 26 can slide on the plurality of flanges 31. Thereby, the cover body 21 is configured to be rotatable with respect to the holder 23. That is, the cover body 21 is configured to be rotatable with respect to the center C1 of the cover body 21. In the first embodiment, the cover body 21 is attached to the opening 52 of the ceiling 51, and the center C1 of the cover body 21 is disposed on the central axis CL1. Thus, by rotating the cover body 21 with the center C1 of the cover body 21 as a reference, the position of the transmission hole 24 can be adjusted.

  Locking portions 32 for locking the convex portions 26 are provided at circumferential ends of the plurality of flange portions 31. Thus, the convex portion 26 sliding on the flange portion 31 is locked by the locking portion 32 to prevent the cover body 21 from falling off the holder 23.

  The inner surface side of the holder 23 is formed of a white member. In order to prevent scattering of light, it is desirable to form by a black member, but when it is formed by a black member, it absorbs light and the temperature of the holder 23 rises too much. Therefore, in the first embodiment, the cylindrical body 28 of the light shielding member 22 is formed of a black member, and the height of the cylindrical body 28 is suppressed (the height is made lower than the holder). The temperature of the light shielding member 22 is prevented from rising excessively. However, when the problem of temperature does not occur by suppressing the output of the lighting unit 10, the inner surface side of the holder 23 may be formed as a light absorbing surface that absorbs the light emitted from the lighting unit 10. For example, the light absorbing surface inside the holder 23 may be formed of a black member. In addition, the light absorption surface inside holder 23 should just be formed by the member which can absorb light, and is not limited to a black member.

  The light absorbing surface may be formed on either or both of the holder 23 and the light shielding member 22.

  A transparent cap 33 is attached to the end of the holder 23 opposite to the side where the light shielding member 22 is attached. Thus, the opening 52 is closed while transmitting the light emitted from the lighting unit 10. In addition, in FIG. 2, in order to demonstrate easily, illustration of the cap 33 is abbreviate | omitted.

  FIG. 5 is a view of the bathroom 60 attached with the bathroom lighting device 1 of FIG. 1 as viewed from the ceiling side. FIG. 6 is a side view of the bathroom 60 to which the bathroom lighting device 1 of FIG. 1 is attached. The dotted line in FIG. 6 indicates the traveling direction of the light emitted from the bathroom lighting device 1. As shown in FIGS. 5 and 6, the bathroom 60 has a bath 61 and a washing place 62. The tub 61 is adjacent to the washing place 62.

  The bath 61 includes a bath body 63 for storing hot water, and a flange 64 provided around the upper end edge of the bath body 63. The bathtub body 63 has a longitudinal direction and a lateral direction as viewed from the ceiling side.

  In the bathroom lighting device 1, the light emitted from the lighting unit 10 is limited by the limiting member 20 and directed toward the water surface of the bath 61. Specifically, as shown in FIG. 5, the limiting member 20 limits the irradiation range 70 having the longitudinal direction and the short direction according to the light irradiated from the illumination unit 10 and the shape of the bathtub 61.

  The irradiation range 70 is a range in which the water surface of the bath 61 is irradiated with light, avoiding the wall surface of the bathroom 60, and it is desirable that the longitudinal end of the bath 61 is not included in the irradiation range 70. Thereby, since the light does not directly hit the bather, the bather can bathe without feeling the glare. The irradiation range 70 is determined by the shape of the transmission hole 24 formed in the cover body 21 of the restriction member 20. In the first embodiment, since the transmission holes 24 are formed in the shape of a long hole having a longitudinal direction and a lateral direction, the irradiation range 70 has a shape having a longitudinal direction and a lateral direction, for example, a rectangular shape or an elliptical shape. Defined in

  Further, in the bathroom lighting device 1, the light emitted from the lighting unit 10 is obliquely incident on the water surface of the bathtub 61. Specifically, the bathroom lighting device 1 is attached outside the area of the ceiling 51 above the center of the bathtub body 63. Next, the cover body 21 is rotated so that the transmission holes 24 formed in the cover body 21 of the restriction member 20 are positioned on the bathtub 61 side. Thus, the light passing through the transmission holes 24 of the cover body 21 is obliquely incident on the water surface of the bath 61. Thus, the lighting unit 10 of the bathroom lighting device 1 can be disposed on the ceiling behind the bathroom ventilating / heating dryer 65 provided above the center of the bathtub body 63. As a result, the space under the ceiling can be used effectively.

  Moreover, the bathroom lighting device 1 may be attached above the flange 64 of the bathtub 61 provided on the washroom 62 side. The bathroom ventilation heating dryer 65 includes one having only a ventilation function such as a ventilation fan, one having only a heating function, one having only a drying function, or any combination thereof.

  Further, in the first embodiment, the bathroom lighting device 1 is disposed away from the center of the bathtub 61 toward the washing place 62, but the position to be avoided is not limited to this. For example, it may be arranged in the longitudinal direction of the bathtub 61 to avoid. However, if it is arranged in the longitudinal direction of the bathtub 61, the direction is made depending on which side it is, and direct light is applied to the wall, or direct light is applied to the bather and the bather feels glare, There is a possibility that the bather will be a shadow and the effect of making the water surface fluctuation beautiful may fade. On the other hand, when the side of the washing place 62 is avoided, it is possible to obtain a more excellent effect without the above-mentioned adverse effect.

[effect]
According to the bathroom lighting device 1 according to the first embodiment, the following effects can be achieved.

  The bathroom lighting device 1 includes a lighting unit 10 that emits light and a limiting member 20 that limits the light emitted from the lighting unit 10. The limiting member 20 radiates the light emitted from the lighting unit 10 toward the water surface of the bath 61 and illuminates the inside of the bathroom with the light reflected by the water surface.

  Specifically, the limiting member 20 limits the light emitted from the lighting unit 10 to the irradiation range 70 having the longitudinal direction and the short direction according to the shape of the bath 61.

  With such a configuration, the water surface of the bath tub 61 can be irradiated with light according to the shape of the bath tub 61, and the light irradiated from the illumination unit 10 is prevented from being directly irradiated with the wall surface of the bathroom 60 while illumination is performed. The light irradiated from the unit 10 can be irradiated to the water surface of the bath 61. Thereby, the wall surface of the bathroom 60 can be illuminated by the light reflected from the water surface, and the fluctuation of the water can be displayed beautifully.

  According to the bathroom lighting device 1, the lighting unit 10 is disposed on the ceiling of the bathroom 60 and emits light through the opening 52 provided in the ceiling 51. The limiting member 20 is provided with a cover 21 having a transmission hole 24 through which light emitted by the lighting unit 10 is transmitted and covering the opening 52. Further, the transmission holes 24 are formed in the shape of long holes corresponding to the longitudinal direction and the short direction of the bath 61.

  With such a configuration, it is possible to irradiate the water surface of the bath 61 with the light transmitted through the transmission holes 24 among the light irradiated from the lighting unit 10. As a result, it is possible to irradiate light to the water surface in an irradiation range corresponding to the shape of the bathtub 61 with a simple configuration by the cover body 21. Moreover, the illumination unit 10 which is a light source is arrange | positioned to a ceiling, and the cover body 21 is arrange | positioned on the ceiling surface by the side of the bathroom 60. As shown in FIG. That is, in the bathroom lighting device 1, the device can be embedded in the ceiling 51. Therefore, according to the bathroom lighting device 1, the appearance of the flat ceiling 51 is not impaired.

  The bathroom lighting device 1 is attached outside the area of the ceiling 51 above the center of the bathtub body 63. In addition, the limiting member 20 causes the light emitted from the lighting unit 10 to be obliquely incident on the water surface of the bathtub 61.

  With such a configuration, it is possible to make the fluctuation of water more beautiful on the wall surface of the bathroom 60 by the reflection of the light obliquely incident on the water surface. In addition, by making the light obliquely incident on the water surface, the influence of human shadow can be reduced. Furthermore, the lighting unit 10 having a light source can be disposed on the ceiling, avoiding equipment such as the bathroom ventilating / heating / drying device 65 disposed above the bathtub 61. As a result, the space under the ceiling can be used effectively.

  Further, since the limiting member 20 can define the irradiation range 70 at a desired position, even if the bathroom lighting device 1 is disposed outside the area of the ceiling 51 above the center of the bathtub body 63, Light can be emitted without reducing the irradiation area of the bath 61 on the water surface.

  The bathroom lighting device 1 is attached above the flange 64 of the bathtub 61 provided on the washroom 62 side.

  With such a configuration, the light reflected by the water can illuminate the wall of the bathroom 60 more extensively, and the water fluctuation can be made more beautiful. Further, the lighting unit 10 having a light source can be disposed on the ceiling, avoiding equipment such as the bathroom ventilating / heating / drying machine 65 disposed above the bathtub 61. As a result, the space under the ceiling can be used effectively.

  The transmission hole 24 of the cover body 21 of the limiting member 20 is formed at a position eccentric to the optical axis of the lighting unit 10. Further, the cover body 21 is attached to the opening 52 of the ceiling 51 so as to be rotatable with respect to the center of the cover body 21.

  With such a configuration, after the bathroom lighting device 1 is attached to the ceiling 51, the light irradiation direction can be easily adjusted by the limiting member 20.

  The limiting member 20 includes a cylindrical member, and a light absorbing surface is formed on the inner surface side of the cylindrical member through which the light emitted from the illumination unit 10 passes. The cylindrical member may be either the holder 23 or the light shielding member 22.

  Such a configuration can suppress the diffusion of the light emitted from the illumination unit 10. For this reason, it can prevent that the light irradiated from the illumination unit 10 is directly irradiated to the wall surface of the bathroom 60.

  In addition, although Embodiment 1 demonstrated the example which illuminates the wall surface of the bathroom 60 mainly with the light reflected by the water surface of the bathtub 61 in the illuminating device 1 for a bathroom, it is not limited to this. The bathroom lighting device 1 may make the water fluctuation beautiful by showing the interior of the bathroom 60 indirectly by the light reflected by the water surface of the bathtub 61. For example, the bathroom lighting device 1 may illuminate the ceiling 51 or the washroom 62 in addition to the wall surface of the bathroom 60 by the reflected light from the water surface.

  In the first embodiment, an example has been described in which the illumination unit 10 is disposed such that the optical axis of the light emitted from the illumination unit 10 is perpendicular to the ceiling surface. However, the present invention is not limited to this. For example, the lighting unit 10 may be arranged such that the optical axis emitted from the lighting unit 10 is oblique to the sky-like surface.

  In Embodiment 1, although the cover body 21 demonstrated the example arrange | positioned on the outer side of the opening 52 of the ceiling 51, it is not limited to this. For example, the cover body 21 may be disposed inside the opening 52. With such a configuration, a flat top surface can be realized even when the bathroom lighting device 1 is attached. As a result, the appearance of the bathroom 60 can be made to look beautiful. In addition, even when the light reflected from the water surface of the bath 61 illuminates the sky-like surface, the fluctuation of water can be made to look beautiful.

  In Embodiment 1, although the transmission hole 24 of the cover body 21 demonstrated the example eccentrically with respect to the center of the cover body 21, it is not limited to this. The position where the transmission holes 24 are formed in the cover body 21 may be changed depending on the shape of the bathroom 60 or the position where the bathroom lighting device 1 is attached. For example, when the bathroom lighting device 1 is attached to the opening 52 of the inclined ceiling 51, the transmission hole 24 may be formed at the center of the cover body 21.

  In Embodiment 1, although the shape of the transmission hole 24 of the cover body 21 demonstrated the rectangular or elliptical shape as a long hole shape which has a longitudinal direction and a transversal direction, it is not limited to this. The shape of the transmission holes 24 may be changed according to the shape of the bath 61. For example, the shape of the transmission holes 24 may be circular, triangular, square, polygonal or the like.

  Although Embodiment 1 demonstrated the example which makes the limitation range 20 the irradiation range 70 which narrowed the range of the longitudinal direction rather than the shape of the bathtub 61, it is not limited to this. For example, the irradiation range 70 may be a range including the entire water surface of the bath 61, a range including the water surface of the bath 61 and the flange 64 of the bath 61, or a position where a person is present on the water surface of the bath 61 The range may be narrowed in consideration of

  In Embodiment 1, although the opening 52 of the ceiling 51 and the cover body 21 demonstrated the example which is circular shape, it is not limited to this. The opening 52 and the cover body 21 may have, for example, a rectangular shape or an elliptical shape.

  Although Embodiment 1 demonstrated the example in which the limitation member 20 is equipped with the light-shielding member 22, it is not limited to this. FIG. 7 is a schematic cross-sectional view of a bathroom lighting device 1A according to a modification. As shown in FIG. 7, in the bathroom lighting device 1A, the light shielding member 22 is not an essential component. The limiting member 20 may not include the light shielding member 22 but may include the cover 21 and the holder 23. With such a configuration, it is possible to provide a bathroom lighting device 1A that can make water fluctuation look beautiful while reducing the number of parts and reducing the cost. In addition, in the bathroom lighting device 1A, the light absorbing surface is formed inside the holder 23. Therefore, the light absorbing surface can suppress the diffusion of the light emitted from the lighting unit 10.

  Although Embodiment 1 demonstrated the example which the cover body 21 restrict | limits the light irradiated from the illumination unit 10 by the transmission hole 24, it is not limited to this. FIG. 8 is a schematic cross-sectional view of a bathroom lighting device 1B according to another modification. As shown in FIG. 8, in the bathroom lighting device 1 </ b> B, the cover body 21 a may be formed of a cylindrical member whose both ends are open. In the bathroom lighting device 1B, the through holes of the light shielding plate 27 of the light shielding member 22 function as transmission holes. That is, the through holes of the light shielding plate 27 irradiate the light emitted from the illumination unit 10 toward the water surface of the bath 61.

  FIG. 9 is a schematic view of a lens 34 for focusing light emitted from the illumination unit 10. The dotted lines in FIG. 9 indicate the traveling direction of the light emitted from the illumination unit 10. As shown in FIG. 9, instead of the transmission holes 24 of the cover body 21, a lens 34 may be used to focus the light emitted from the illumination unit 10 toward the water surface of the bath 61. For example, the lens 34 may have optical anisotropy. The light may be focused on the water surface of the bath 61 by causing the light irradiated from the illumination unit 10 to enter the lens 34 having optical anisotropy. Alternatively, the light traveling direction may be changed by the inclination of the lens 34, and the water surface of the bath 61 may be irradiated with the light. With such a configuration, light can be irradiated to a desired range more easily. In addition, since the light emitted from the illumination unit 10 is focused by the lens 34, the decrease in light intensity can be reduced.

  Although the invention has been described in certain embodiments with particular detail, the disclosure content of these embodiments should be varied in detail of construction. In addition, changes in combinations or order of elements in the embodiments can be realized without departing from the scope and spirit of the present disclosure.

  INDUSTRIAL APPLICABILITY The present invention can be used as a bathroom lighting device that emits light toward the water surface of a bath.

1, 1A, 1B Bathroom lighting device 10 Lighting unit 11 Reinforcement wood 12 Holder nut 13 Metal plate 14 Tapping screw 15 Water seal packing 16 Non-slip packing 20 Limiting member 21 Cover body 22 Light shielding member 23 Holder 24 Transparent hole 25 Positioning pin 26 Convex part 27 Light shielding plate 28 Cylindrical body 29 Positioning hole 30 Through hole 31 Flange part 32 Locking part 33 Cap 34 Lens 51 Ceiling 52 Opening 60 Bathroom 61 Bath 62 Bathing place 63 Bath body 64 Flange 65 Bathroom ventilation heating dryer 70 Irradiation range C1 Center CL1 Center axis D1, D2 direction

Claims (9)

A lighting unit that emits light;
A restricting member for restricting light emitted from the lighting unit;
Equipped with
The illumination device for a bathroom, wherein the limiting member illuminates the light emitted from the illumination unit toward the water surface of the bath without directly irradiating the wall of the bathroom, and illuminates the inside of the bathroom with the light reflected by the water surface. . The lighting unit is disposed on the ceiling of the bathroom and emits light through an opening provided in the ceiling.
The bathroom illumination apparatus according to claim 1, wherein the limiting member causes the light emitted from the illumination unit to be obliquely incident on the water surface of the bathtub. The bathtub has a bathtub body for storing hot water and a flange provided around the upper end edge of the bathtub body,
The bathroom lighting device according to claim 2, wherein the bathroom lighting device is attached outside a central upper ceiling area of the bathtub body. In the bathroom, the bathtub and the washroom are disposed adjacent to each other.
The bathroom lighting device is provided above a flange of the bath provided on the washing side.
The bathroom lighting device according to claim 3.   The bathroom lighting device according to any one of claims 2 to 4, wherein the limiting member has a transmission hole that transmits light emitted by the lighting unit and a cover that covers the opening.   The bathroom lighting device according to claim 5, wherein the cover body is attached to the opening of the ceiling so as to be rotatable about a center of the cover body.   The bathroom lighting device according to claim 5, wherein the transmission hole is formed at an eccentric position with respect to the optical axis of the lighting unit.   The bathroom illumination apparatus according to any one of claims 1 to 4, wherein the restriction member includes a lens for focusing light emitted from the illumination unit toward the water surface of the bathtub. The limiting member comprises a tubular member,
A light absorbing surface is formed on the inner surface side of the cylindrical member through which the light emitted from the lighting unit passes.
The bathroom lighting device according to any one of claims 1 to 8.

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