JP2016079711A - Bathroom ceiling structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a bathroom ceiling structure capable of improving workability due to improved accessibility to a light source of a lighting unit when changing the light source and simplifying the lighting unit structure.SOLUTION: On a ceiling surface 11 of a bathroom 1, a rectangular lighting unit 2, a rectangular ventilation panel 13 with an aperture 12 for installing a ventilation device, and a rectangular access port panel 15 with an access port 14 are installed. The lighting unit 2 has first fitting parts 4 on its three sides respectively which are attached to a top edge of a wall panel 3 of the bathroom 1. The ventilation panel 13 and the access port panel 15 are disposed in parallel so that these panels are adjacent to the lighting unit 2 at one side and adjacent to each other at the other side .SELECTED DRAWING: Figure 1

Description

  The present invention relates to a ceiling structure of a bathroom.

  Conventionally, as described in Patent Document 1, for example, as a ceiling structure of a bathroom, the bathroom ceiling surface has a rectangular lighting unit, a rectangular ventilation panel provided with a ventilation opening, and a rectangular ceiling panel provided with an inspection opening. A so-called three-divided type composed of an inspection port panel having a shape is known. In this case, the lighting unit, the ventilation panel, and the inspection port panel are mounted side by side in the ceiling mounting opening with the ventilation panel at the center. For this reason, even when trying to replace the light source of the lighting unit by going over the ceiling from the inspection port panel, it may not be reachable depending on the connection with the ventilation device attached to the ventilation panel, and workability will be reduced. There is a problem of getting worse.

  Therefore, in the case of such a ceiling structure, in order to replace the light source of the lighting unit, a cover that faces the bathroom of the lighting unit is provided so as to be removable from the inside of the bathroom. For this reason, the structure of the illumination unit is complicated, and there are disadvantages that a step or the like is generated between the illumination unit and the ventilation panel, resulting in poor appearance.

Japanese Patent Laid-Open No. 11-6315

  The present invention has been made in view of such a point, and the problem is that when an illumination unit, a ventilation panel, and an inspection port panel are provided on a ceiling surface of a bathroom, an arrangement layout thereof is appropriately set. This makes it easier to reach, such as when replacing the light source of the lighting unit by leaning over the ceiling from the inspection port of the inspection port panel, can improve workability, and can simplify the configuration of the lighting unit Is to provide a ceiling structure.

  In order to solve the above-described problems, the present invention provides a ceiling structure of a bathroom, a rectangular lighting unit on a ceiling surface of the bathroom, a rectangular ventilation panel provided with an opening for attaching a ventilation device, and an inspection. It is assumed that a rectangular inspection port panel provided with a mouth is provided. And the said lighting unit has the attachment part attached to the upper end of the wall panel of a bathroom, respectively on the three sides, and the said ventilation panel and the said inspection port panel are all adjacent to the said lighting unit on one side. And it is set as the structure arrange | positioned in the parallel state which mutually adjoins on another one side.

  Here, the lighting unit is provided with a flat transparent or translucent lower cover provided facing the bathroom, a rectangular frame-like frame that holds the lower cover, and a predetermined interval from the lower cover. A planar light emitter disposed on the upper surface of the planar light emitter; and the lower cover, the planar light emitter, and the upper cover are integrally assembled via the frame. The mounting portion is provided on each of three sides of the rectangular frame 4 side of the frame, and on the other side, the first connection portion for connecting to the ventilation panel, It is preferable that the 2nd connection part for connecting with an inspection port panel is provided.

  Moreover, it is preferable that the lower surface of the lower cover of the lighting unit is provided flush with the lower surface of the ventilation panel and the lower surface of the inspection port panel.

  The planar light-emitting body includes a light source unit in which a plurality of light emitting elements are mounted at predetermined intervals along the longitudinal direction of the substrate, and a lower surface that takes in light emitted from the light emitting elements of the light source unit from an end surface. A light guide plate that emits light from the entire lower surface by being emitted from the light source, and the light source portion is disposed along one side having the first connection portion and the second connection portion of the frame and is removed. It is preferable to be provided.

  Furthermore, it is preferable that the width dimension of the illumination unit is set within a range of 40 to 100 cm.

  According to the ceiling structure of the bathroom of the present invention, of the lighting unit, the ventilation panel, and the inspection port panel provided on the ceiling surface, the ventilation panel and the inspection port panel are adjacent to the lighting unit on one side and are different from each other. It is arranged in a parallel state adjacent to each other. For this reason, it becomes easy to reach, such as changing the light source of the lighting unit by leaning over the ceiling from the inspection opening of the inspection opening panel, and the workability can be improved. In addition, it is not necessary to removably provide a cover facing the bathroom of the lighting unit from the inside of the bathroom, and the configuration of the lighting unit can be simplified correspondingly.

FIG. 1 is an exploded perspective view showing a ceiling structure of a bathroom according to an embodiment of the present invention from the ceiling. FIG. 2 is a partially cut perspective view of the bathroom with the lighting unit removed. FIG. 3 is an enlarged cross-sectional view taken along line XX in FIG. FIG. 4 is an enlarged view of the vicinity of Y in FIG. FIG. 5 is a perspective view of a frame which is a constituent member of the illumination unit. 6 is an enlarged view of the vicinity of Z in FIG. FIG. 7 is an enlarged cross-sectional view taken along line DD of FIG. FIG. 8 is a perspective view showing a light source part of a planar light emitter, which is a constituent member of the illumination unit. FIG. 9 is a front view of the light source unit. FIG. 10 is a right side view of the light source unit. FIG. 11 is a perspective view showing the vicinity of the wall panel side end portion of the connection portion between the lighting unit and the inspection port panel in a state where the lighting unit of FIG. 1 is attached. 12 is an enlarged cross-sectional view taken along line EE in FIG. FIG. 13 is an enlarged cross-sectional view taken along line FF in FIG.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments that are modes for carrying out the present invention will be described with reference to the drawings.

  FIG. 1 shows an overall configuration of a bathroom ceiling structure according to an embodiment of the present invention. In FIG. 1, reference numeral 1 denotes a bathroom, and a rectangular ventilation panel provided with a rectangular lighting unit 2 and an opening 12 for attaching a ventilation device (not shown) on a ceiling surface 11 of the bathroom 1. 13 and a rectangular inspection port panel 15 provided with an inspection port 14 are provided. In the case of this embodiment, the ceiling surface 11 of the bathroom 1 has a so-called three-divided type ceiling structure composed of the lighting unit 2, the ventilation panel 13, and the inspection port panel 15.

  The lighting unit 2 occupies about 1/3 of the area of the ceiling surface 11 and illuminates the entire interior of the bathroom 1 without any problems. The lighting unit 2 has a first attachment portion 4 attached to the upper end of the wall panel 3 of the bathroom 1 on each of its three sides, specifically, one long side and two short sides. The width dimension of the lighting unit 2 (the length dimension in the direction orthogonal to the side adjacent to the ventilation panel 13) is set within a range of 40 to 100 cm.

  The ventilation panel 13 and the inspection port panel 15 are arranged in a parallel state in which they are adjacent to the lighting unit 2 on one side and adjacent to each other on one side. Moreover, the ventilation panel 13 and the inspection port panel 15 have the 2nd attachment part 16 or 17 attached to the upper end of the wall panel 3, respectively in the remaining 2 sides orthogonal to each other.

  Here, the illumination unit 2 is normally attached to the position which straddles the bathtub side of the floor panel (not shown) of the bathroom 1, and the washroom side. The ventilation panel 13 is attached to a position facing the bathtub side of the floor panel of the bathroom 1, and the inspection port panel 15 is attached to a position facing the washing room side of the floor panel of the bathroom 1. However, the present invention is not limited to this, and the lighting unit 2 is placed at a position facing the bathtub side of the floor panel of the bathroom 1, and the ventilation panel 13 and the inspection port panel 15 are placed at positions facing the washing room side of the floor panel of the bathroom 1. It may be attached.

  As shown in FIGS. 2 to 4, the lighting unit 2 includes a flat plate-like lower cover 21 provided facing the bathroom 1, a rectangular frame-shaped frame 22 that holds the lower cover 21, a lower cover 21, and a predetermined cover The planar light-emitting body 23 and the upper cover 24 which are arranged with an interval of are provided. The upper cover 24 is disposed above the planar light emitter 23, and the lower cover 21, the planar light emitter 23, and the upper cover 24 are integrally assembled via the frame 22.

  The frame 22 has a function as a strength member of the lighting unit 2 and is a composite member for attaching the lighting unit 2 to the upper end of the wall panel 3 of the bathroom 1. As shown in FIGS. An outer frame 26, an inner frame 27, and a pressing member 28 are provided.

  The outer frame 26 is a member constituting the main body of the frame 22, and is formed in a rectangular frame shape having a pair of long side frames 31 and 32 and a pair of short side frames 33 and 33. Of the pair of long side frames 31, 32, the first attachment portion 4 is provided on each of the long side frame 31 on the wall panel 3 side of the bathroom 1 and the pair of short side frames 33, 33. As shown in FIGS. 11 and 12, the first attachment portion 4 is provided in an extension portion 35 that extends below the support portion 34 that supports the lower cover 21 of the outer frame 26, and the extension portion 35. And a long slot 36 which is long in the horizontal direction. And the extension part 35 was located in the outer side of the wall panel 3 of the bathroom 1, and the outer frame 26 was mounted in the upper end of the wall panel 3 of the bathroom 1, and it provided in the wall panel 3 from the inner side of the bathroom 1 in this state The fixing screw (not shown) is screwed into the elongated hole 36 of the extending portion 35 from the hole.

  The inner frame 27 is formed in a rectangular frame shape like the outer frame 26, and is engaged and assembled inside the outer frame 26. The inner frame 27 has a function of holding the lower cover 21 between the support portion 34 of the outer frame 26 and a predetermined interval between the lower cover 21 and the planar light-emitting body 23 (light guide plate 46 described later in detail). And a function as a spacer for providing the.

  The pressing member 28 corresponds to the long side frame 31 on the wall panel 3 side of the bathroom 1 and the pair of short side frames 33, 33 among the four sides of the rectangular frame of the outer frame 26. And a pair of short sides 28b, 28b. The holding member 28 has a long side portion 28a and a short side portion 28b that hold the edges of the upper cover 24 and the planar light-emitting body 23 (specifically, a light guide plate 46, which will be described later in detail) from the upper side. It is fixed to the upper end portion by a fixing screw 37 (see FIGS. 3, 11 and 12).

  Further, the long side frame 32 of the outer frame 26 on the side opposite to the wall panel 3 of the bathroom 1 is, as shown in FIGS. 4 and 7, the vertical surface portion 38 on the outer side in the width direction from the assembly position of the inner frame 27. And a slide support 39.

  The vertical surface portion 38 extends upward from the outer end of the portion 34 a that extends outward in the width direction of the support portion 34. As shown in FIGS. 6 and 7, a plurality of connecting pins 40, 40,... Protruding outward are provided at predetermined intervals along the longitudinal direction at the upper edge of the vertical surface portion 38. Each connecting pin 40 is provided, for example, by screwing a screw 44 inserted into a cylindrical spacer 43 into the vertical surface portion 38. Further, two connecting pins 40 constitute one set. For example, as shown in FIG. 6, the connecting pin 40 provided at one end in the longitudinal direction of the long side frame 32 constitutes a first pin 41, and the first pin 41 extends in the longitudinal direction of the long side frame 32. A connecting pin 40 provided at a position along the predetermined distance along the second pin 42 constitutes the second pin 42. A plurality of sets (three sets in FIG. 5) of the first pins 41 and the second pins 42 are provided.

  As shown in FIGS. 6 and 7, the slide support portion 39 protrudes inward from the upper end of the vertical surface portion 38. The upper surface of the slide support portion 39 is a horizontal plane and constitutes a part of the upper surface of the long side frame 32.

  As shown in FIGS. 2 to 4, the planar light emitters 23 are arranged in a line along the light guide plate 46 held by the frame 22 and the long side frame 32 of the frame 22, and are provided in a detachable manner. The light source sections 47, 47,... In addition, since each light source part 47 is the same structure, below, the light source part 47 attached to the most distant position away from the inspection port 14 is mainly demonstrated.

  The light guide plate 46 is composed of a transparent rectangular plate such as acrylic resin or glass, and the light emitted from each light source unit 47 is taken in from the end surface and emitted from the lower surface, so that the entire lower surface emits light. Yes. For example, a dot-shaped pattern is printed on the upper surface of the light guide plate 46 so that light incident from the end surface into the light guide plate 46 is diffused and reflected toward the lower surface of the light guide plate 46.

  As shown in FIGS. 8 and 9, the light source unit 47 is composed of a long member extending in one direction. The longitudinal direction of the light source unit 47 is parallel to the longitudinal direction of the long side frame 32 of the frame 22. Of the end portions on both sides in the longitudinal direction of the light source portion 47, the end portion on the side away from the inspection port 14 is referred to as a first end portion 48, and the opposite end portion is referred to as a second end portion 49.

  As shown in FIG. 10, the light source unit 47 includes a base unit 52, a light emitting unit 57 as a light source unit main body, and a cover unit 60. The base portion 52 includes a receiving piece 53 that supports the light emitting portion 57, a slide piece 54 that protrudes outward from the upper end of the receiving piece 53, a vertical piece 55 that hangs downward from the tip of the slide piece 54, and a receiving piece. A connecting piece 56 that protrudes inward from the upper end of the piece 53 is provided.

  The receiving piece 53 contacts the light emitting unit 57 from the outside and supports the light emitting unit 57. As shown in FIG. 4, the slide piece 54 is slidably moved in a direction parallel to the longitudinal direction of the long side frame 32 while being placed on the slide support portion 39 of the long side frame 32 of the frame 22. It has been. The vertical piece 55 hangs downward from the tip of the slide piece 54, thereby guiding the slide movement of the slide piece 54 on the slide support portion 39. The connecting piece 56 has an upper surface formed flush with the upper surface of the slide piece 54 and supports the upper end of the cover portion 60.

  As shown in FIG. 10, the light emitting unit 57 includes a substrate 58 and a plurality of light emitting elements 59 such as LEDs mounted on the substrate 58. Although only one light emitting element 59 is shown in FIG. 10, a plurality of light emitting elements 59 are arranged at predetermined intervals along the longitudinal direction of the light source unit 47. The light emitting unit 57 is attached to the base unit 52 with the light emitting element 59 facing the inside, that is, the light guide plate 46 side, and is covered with a cover unit 60.

  The cover unit 60 covers the light emitting unit 57 from the side and protects the light emitting unit 57. The cover 60 has a lower end connected to the receiving piece 53 of the base portion 52 and an upper end connected to the connecting piece 56 of the base portion 52 and is assembled to the base portion 52. The cover portion 60 includes a pair of protrusions 61 and 61 provided on both upper and lower sides of the light emitting element 59 and a transmission portion 62 provided between the pair of protrusions 61 and 61.

  Each protrusion 61 protrudes from the cover 60 toward the substrate 58, and the tip thereof is in contact with or close to the substrate 58. The transmission part 62 is made of a transparent synthetic resin. In addition, parts other than the transmission part 62 of the cover part 60 are comprised with the resin material (for example, white resin material) with a light reflection property. That is, the cover part 60 is a two-color molded product.

  The cover 60 is provided with a pressing protrusion 63 that protrudes inward, that is, toward the light guide plate 46. As shown in FIG. 4, the pressing protrusion 63 is configured to press the upper cover 24 and the light guide plate 46 of the planar light emitting body 23 from above when the light source 47 is attached to the long side frame 32. Yes. The pressing protrusion 63 is also made of a white resin material.

  Here, when the light emitting part 57 (specifically, the light emitting element 59) emits light, most of the light passes through the transmission part 62 and enters the light guide plate 46, and part of the light is transmitted to the transmission part 62 and other parts. The light is reflected by the boundary surface with the part and the protrusion 61 and enters the light guide plate 46. Therefore, the cover part 60 has a function of suppressing light loss.

  As shown in FIGS. 8 and 9, a first notch portion 64 and a second notch portion 65 are provided on the first end portion 48 and the second end portion 49 of the light source portion 47, respectively. The first cutout portion 64 is open in the longitudinal direction of the light source portion 47, and an inclined portion 66 that is inclined obliquely upward toward the opening side is formed at the upper edge of the opening of the first cutout portion 64. ing. The second notch 65 opens downward. The distance between the bottom of the first notch 64 of the first end 48 and the second notch 65 of the second end 49 and the distance between the second notch 65 and the second end 49 of the first end 48. The distance between the bottoms of the first notches 64 is set to be the same as the distance between the first pins 41 and the second pins 42 of the long side frame 32. And when attaching the light source part 47 along the longitudinal direction of the long side frame 32, the 1st notch part 64 of the 1st end part 48 of the light source part 47 is first fitted to the 1st pin 41 of the long side frame 32, for example. And engage. Thereafter, the second notch portion 65 of the second end portion 49 of the light source portion 47 is fitted into the second pin 42 of the long side frame 32 and engaged therewith. Thereby, the light source part 47 is detachably attached to the long side frame 32.

  The lower cover 21 is made of a transparent or translucent synthetic resin. The upper cover 24 is made of a synthetic resin or metal having light shielding properties and light reflecting properties. In addition, the upper cover 24 is attached in contact with the upper surface of the light guide plate 46 of the planar light emitter 23, thereby preventing light leakage and preventing light loss and improving efficiency. The light plate 46 can be protected.

  On the other hand, the ventilation panel 13 and the inspection port panel 15 are both members also called ceiling panels. In the case of the inspection port panel 15, as shown in FIG. 13, a decorative steel plate 71, a wooden plywood 72, It is configured by polymerizing a heat insulating material 73 such as polystyrene foam.

  The ventilation panel 13 is formed in a rectangular flat plate shape, and a rectangular opening 12 is provided at a position closer to the lighting unit 2 than the central portion of the ventilation panel 13. Although not shown, the ventilation device is attached to the ventilation panel 13 with the ventilation device facing the inside of the bathroom 1 through the opening 12. Two sides orthogonal to each other among the four sides of the ventilation panel 13 are each attached to the upper end of the wall panel 3 of the bathroom 1 by the second attachment portion 16. Although not shown in detail in the drawing, the second mounting portion 16 has the same configuration as the first mounting portion 4.

  The inspection port panel 15 is formed in a rectangular flat plate shape, and a circular inspection port 14 is provided at a position closer to the lighting unit 2 than the central portion of the inspection port panel 15. Although not shown, an inspection lid is detachably attached to the inspection port 14 from the inside of the bathroom 1. Of the four sides of the inspection port panel 15, two sides orthogonal to each other are respectively attached to the upper end of the wall panel 3 of the bathroom 1 by the second attachment portion 17. Although not shown in detail in the drawing, the second mounting portion 17 has the same configuration as the first mounting portion 4.

  The ventilation panel 13 and the inspection port panel 15 are attached so that the lower surfaces of both the panels 13 and 15 are flush with each other in a state where one side is joined with a backup material (not shown) interposed therebetween. .

  As shown in FIG. 5, the long side frame 32 of the lighting unit 2 is provided with a first connection portion 81 for connecting to the ventilation panel 13 and a second connection portion 82 for connecting to the inspection port panel 15. It has been. Both the first connection portion 81 and the second connection portion 82 are formed from a plurality of screw holes 83, 83,... Provided at predetermined intervals along the longitudinal direction of the long side frame 32 on the vertical surface portion 38 of the long side frame 32. Become. When the long side frame 32 of the lighting unit 2 is connected to the ventilation panel 13 or the inspection port panel 15, the vertical edge 74 of the decorative steel plate 71 bent vertically upward along one side of the ventilation panel 13 or the inspection port panel 15. The fixing screw 84 is screwed into the screw hole 83 from the insertion hole provided in the screw hole. Thereby, the long side frame 32 and the ventilation panel 13 or the inspection port panel 15 are connected (refer FIG. 13).

  The lower surface of the lower cover 21 of the lighting unit 2 is provided flush with the lower surface of the ventilation panel 13 and the lower surface of the inspection port panel 15. In FIG. 12, reference numeral 91 denotes a peripheral edge mounted between the upper edge of the wall panel 3 of the bathroom 1 and the support portion 34 of the outer frame 26 of the lighting unit 2, and the peripheral edge 91 is a wall of the bathroom 1. It is mounted over the entire periphery of the upper edge of the panel 3 and the peripheral edge of the ceiling surface 11.

  Next, the function and effect of the embodiment will be described. When the ceiling surface 11 of the bathroom 1 is composed of the rectangular lighting unit 2, the rectangular ventilation panel 13, and the rectangular inspection port panel 15, the lighting unit 2 has three sides by the first mounting portion 4. It is attached to the upper edge of the wall panel 3 of the bathroom 1. The ventilation panel 13 and the inspection port panel 15 are arranged in a parallel state in which the ventilation unit 13 and the inspection port panel 15 are adjacent to each other on one side and adjacent to each other on one side. 2 It is attached to the upper edge of the wall panel 3 of the bathroom 1 by attachment parts 16 and 17. For this reason, an operator leans on the back of the ceiling from the inspection port 14 of the inspection port panel 15 using a stepladder or the like, checks the ventilation device attached to the ventilation panel 13, or the light source unit 47 of the lighting unit 2. Even when exchanging, it becomes easier to reach and workability can be improved.

  Moreover, it is not necessary to provide a cover or the like facing the bathroom of the lighting unit 2 so as to be removable from the inside of the bathroom as in the prior art, and the configuration of the lighting unit 2 can be simplified correspondingly.

  In particular, in the present embodiment, the lighting unit 2 includes a lower cover 21, a rectangular frame 22 holding the lower cover 21, a planar light emitter 23, and an upper cover 24. The light emitter 23 and the upper cover 24 are integrally assembled via the frame 22. For this reason, attachment of the lighting unit 2 at the time of construction becomes easy, and workability can be improved.

  The lower surface of the lower cover 21 of the lighting unit 2 is provided flush with the lower surface of the ventilation panel 13 and the lower surface of the inspection port panel 15. For this reason, when the lighting unit 2 is turned on, it feels as if the sky is spreading on the ceiling, and the user can feel an open feeling that the user is exposed to natural light. Moreover, the ceiling surface 11 of the bathroom 1 can be finished beautifully, and cleaning becomes easier.

  The planar light-emitting body 23 includes a light source unit 47 having a light-emitting unit 57 in which a plurality of light-emitting elements 59 are mounted at predetermined intervals along the longitudinal direction of the substrate 58, and light emitted from each light-emitting element 59. The light guide plate 46 is configured to emit light from the lower surface and emit light from the lower surface so that the entire lower surface emits light. For this reason, the brightness of the planar light-emitting body 23 and by extension, the illumination unit 2 can be raised, reducing power consumption.

  In addition, the light source unit 47 extends along the long side frame 32 on the side opposite to the wall panel 3 of the bathroom 1, that is, on the ceiling panels 13 and 15 side, of the pair of long side frames 31 and 32 of the outer frame 26 of the frame 22. Arranged and detachable. Therefore, when the light source unit 47 is replaced by getting out of the inspection port 14 of the inspection port panel 15 and replacing the light source unit 47, the hand can easily reach the light source unit 47 and workability can be further improved.

  Furthermore, since the width dimension of the illumination unit 2 is set within a range of 40 to 100 cm, it is effective in achieving implementation. That is, if the width dimension of the lighting unit 2 is less than 40 cm, although it depends on the size of the bathroom 1, it is not sufficient to illuminate the entire interior of the bathroom 1. On the other hand, if the width dimension of the illumination unit 2 is 100 cm or more, it becomes difficult to handle the illumination unit 2 at the time of construction.

  In addition, this invention is not limited to the said embodiment, A various other form is included. For example, in the above-described embodiment, the rectangular illumination unit 2 includes the lower cover 21, the rectangular frame-shaped frame 22, the planar light-emitting body 23, and the upper cover 24. And at least one of the upper cover 24 may be omitted.

  In the above-described embodiment, the planar light-emitting body 23 includes the light source unit 47 having the light emitting unit 57 in which a plurality of light emitting elements 59 are mounted at predetermined intervals along the longitudinal direction of the substrate 58, and each light emitting element 59. The light guide plate 46 takes in the light emitted from the end surface and emits it from the lower surface. However, the present invention is not limited to this, and a planar light-emitting body may be configured by mounting a plurality of light-emitting elements on a rectangular substrate, for example, at predetermined intervals in the vertical and horizontal directions, or otherwise conventionally known. Alternatively, a planar light emitter may be used.

  Furthermore, in the said embodiment, although the ceiling surface 11 of the bathroom 1 described the 3 division | segmentation type ceiling structure comprised by the lighting unit 2, the ventilation panel 13, and the inspection port panel 15, this invention is a 4 division type. It can also be applied to ceiling structures. In this case, the lighting unit has attachment portions attached to the upper ends of the wall panels of the bathroom on the three sides. The ventilation panel, the inspection port panel, and the third panel are all arranged adjacent to each other on one side with respect to the lighting unit and arranged adjacent to each other on one side around the inspection port panel. Just do it.

DESCRIPTION OF SYMBOLS 1 Bathroom 2 Lighting unit 3 Wall panel 4 1st attaching part 11 Ceiling surface 12 Opening part 13 Ventilation panel (ceiling panel)
14 Inspection port 15 Inspection port panel (ceiling panel)
16, 17 Second mounting portion 21 Lower cover 22 Frame 23 Planar light emitter 24 Upper cover 46 Light guide plate 47 Light source portion 57 Light emitting portion (light source portion main body)
58 substrate 59 light-emitting element 81 first connection portion 82 second connection portion

Claims (5)

Bathroom ceiling provided with a rectangular lighting unit, a rectangular ventilation panel with an opening for attaching a ventilation device, and a rectangular inspection port panel with an inspection port on the ceiling surface of the bathroom Structure,
The lighting unit has a mounting portion attached to the upper end of the bathroom wall panel on each of its three sides,
The ceiling structure of a bathroom, wherein the ventilation panel and the inspection port panel are arranged in parallel with each other adjacent to the lighting unit on one side and adjacent to each other on one side. The lighting unit is arranged with a flat transparent or translucent lower cover provided facing the bathroom, a rectangular frame-like frame that holds the lower cover, and a predetermined distance from the lower cover. A planar light emitter and an upper cover disposed above the planar light emitter, and the lower cover, the planar light emitter, and the upper cover are integrally assembled via the frame. ,
The attachment portions are provided on three sides of the four sides of the rectangular frame of the frame, respectively, and the remaining one side is provided with a first connection portion for connection with the ventilation panel, and the inspection port panel. The bathroom ceiling structure according to claim 1, wherein a second connection part for connection is provided.   The bathroom ceiling structure according to claim 2, wherein a lower surface of the lower cover of the lighting unit is provided flush with a lower surface of the ventilation panel and a lower surface of the inspection port panel. The planar light-emitting body includes a light source unit in which a plurality of light emitting elements are mounted at predetermined intervals along the longitudinal direction of the substrate, and a lower surface that takes in light emitted from the light emitting elements of the light source unit from an end surface. A light guide plate that emits light from the entire bottom surface by being emitted from
The ceiling structure of the bathroom according to claim 2 or 3, wherein the light source part is disposed along one side of the frame where the first connection part and the second connection part are provided and is detachable.   The bathroom ceiling structure according to any one of claims 1 to 4, wherein a width dimension of the lighting unit is set within a range of 40 to 100 cm.

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