JP6459119B2 - Lighting device and mounting structure thereof - Google Patents

Description

  The present invention generally relates to a lighting device and a mounting structure thereof, and more particularly to a lighting device mounted on a bathroom and a mounting structure of a lighting device mounted on a bathroom ceiling.

  Patent Document 1 discloses a conventional lighting device. The lighting device described in Patent Document 1 is a building wall panel having a surface light emitting function. This illuminating device includes a surface layer, a fixed base, a light guide plate disposed between the surface layer and the fixed base, and a light source block disposed to face both upper and lower end surfaces of the light guide plate. The light guide plate takes in light emitted from the light source from each end face and emits it from the front face.

JP 2010-229893 A

  By the way, when using the illuminating device described in Patent Document 1 in a bathroom, for example, immediately after the start of use, the surface layer and the fixed base are in a cold state. For this reason, in this case, there is a problem that a large amount of condensation occurs on the surface layer and the fixed base.

  This invention is made | formed in view of the said situation, Even if it installs in a bathroom, it aims at providing the illuminating device which suppresses generation | occurrence | production of the dew condensation to an attachment frame, and its attachment structure.

The lighting device of the present invention is a lighting device that is attached to a mounting opening of a bathroom, has a light source portion, emits light toward the inside of the bathroom, and attaches the planar light emitting body to the mounting opening. An attachment frame and a heat insulating cover that covers the outside of the light source unit are provided, and the attachment frame is attached to the periphery of the attachment opening so as to surround the attachment opening, and is thermally connected to the light source unit. It is characterized by.

  The mounting structure of the lighting device according to the present invention includes a bathroom side cover that is mounted on the mounting frame and covers a light emitting direction of the planar light emitter and has translucency, and the bathroom side cover. The inner surface of the bathroom is arranged so as to be flush with the inner surface of the bathroom.

  According to the lighting device of the present invention, it is possible to suppress the occurrence of condensation on the mounting frame even when installed in a bathroom.

  According to the lighting device mounting structure of the present invention, it is possible to suppress the occurrence of condensation on the mounting frame.

It is a disassembled perspective view of the attachment structure of the illuminating device of this embodiment. It is a perspective view of the attachment frame of this embodiment. It is a perspective view of the frame main body of this embodiment. FIG. 4 is a sectional view taken along line AA in FIG. 3. FIG. 4 is a sectional view taken along line BB in FIG. 3. It is CC sectional view taken on the line of FIG. It is sectional drawing of the illuminating device of this embodiment. It is a perspective view of the 1st spacer of this embodiment. It is sectional drawing which shows the state which attached the 1st spacer of this embodiment. It is a perspective view of the 2nd spacer of this embodiment. It is sectional drawing which shows the state which attached the 2nd spacer of this embodiment. It is the perspective view which fractured | ruptured some illumination apparatuses of this embodiment. It is a front view of the light source part of this embodiment. It is a principal part expanded sectional view of the light source part periphery of the modification of this embodiment. It is the principal part expanded sectional view which cut | disconnected the 1st frame side of the modification of this embodiment.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

  The illuminating device 2 of this embodiment is attached to the ceiling of the bathroom 1, as shown in FIG. The lighting device 2 emits light in a planar shape and illuminates the bathroom 1. The lighting device 2 occupies about half of the ceiling area of the bathroom 1. That is, the ceiling of the present embodiment is configured so that approximately half emits light.

  The bathroom 1 is composed of a unit room having a ceiling panel 11, a wall panel 14, and a floor panel (not shown). The ceiling panel 11 is provided with a heat insulating material 16 on the upper surface, and is placed on the upper end of the wall panel 14. The ceiling panel 11 is provided with an inspection port 12 and an attachment port 13 for attaching a bathroom dryer. The inspection port 12 is an opening for inspecting the back of the ceiling (above the ceiling panel 11) from the bathroom 1. A user, an operator, or the like can inspect and maintain the lighting device 2 and the bathroom dryer through the inspection port 12.

  In addition, as the heat insulating material 16 provided in the ceiling panel 11, synthetic resin foams, such as a polyisocyanurate foam, are illustrated.

  The bathroom 1 has a ceiling. In the present embodiment, the ceiling refers to an upper surface that forms a space inside the bathroom 1, and specifically includes the lower surface of the ceiling panel 11 and the lower surface of the lighting device 2. A mounting opening 15 is provided on the ceiling, and the lighting device 2 is mounted on the mounting opening 15 so that illumination can be performed through the mounting opening 15.

  The attachment opening 15 is an opening provided in the ceiling for attaching the lighting device 2. The attachment opening 15 has a length and a width (the width is shorter than the length), and is thus formed in a rectangular shape. The inspection port 12 is arranged so as to be aligned in the width direction of the mounting opening 15 at a position biased to one end side in the length direction of the mounting opening 15.

  In addition, although the attachment opening 15 of this embodiment is comprised by the edge of the ceiling panel 11 and the edge of the wall panel 14, you may be comprised by the through-hole provided in the ceiling panel 11. FIG. Further, the attachment opening 15 may not be rectangular.

  The lighting device 2 is attached to the ceiling panel 11 and the wall panel 14 and illuminates the bathroom 1 through the attachment opening 15. The lighting device 2 includes a mounting frame 3, a planar light emitter 6, and a bathroom side cover 9.

  The attachment frame 3 fixes the planar light-emitting body 6 and the bathroom side cover 9 to the ceiling. The attachment frame 3 of this embodiment is attached to the periphery of the attachment opening 15 so as to surround the attachment opening 15. The mounting frame 3 is formed in a rectangular frame shape in plan view as shown in FIG. The mounting frame 3 also has a function as a structural material that reinforces the ceiling panel 11 and the wall panel 14 by connecting the ceiling panel 11 and the wall panel 14 to each other. The mounting frame 3 includes a frame main body 31, a spacer 5, and a pressing member 47.

  As shown in FIG. 3, the frame main body 31 has a rectangular frame shape in plan view, and constitutes the main body of the mounting frame 3. The frame body 31 is made of, for example, a metal material such as stainless steel. The frame main body 31 has a pair of short frames 33 and a pair of long frames 32, and the short frames 33 and the long frames 32 are connected to each other with a fixing tool to form a frame.

  An enlarged sectional view of the short frame 33 is shown in FIG. The short frame 33 includes a vertical surface portion 34a, a wall fixing portion 35a, a cover support portion 36a, a spacer holding portion 37a, and a pressing fixing portion 41a. The vertical surface portion 34 a has a length in a direction parallel to the width direction of the mounting opening 15.

  The wall fixing portion 35a connects and fixes the frame main body 31 to the wall panel 14. The wall fixing portion 35a protrudes downward from the lower end of the vertical surface portion 34a. The wall fixing portion 35a is provided with a fixing tool insertion hole 42a for inserting the fixing tool. The wall fixing portion 35a is disposed so that the outer surface of the wall panel 14 is close to the inner surface, and in this state, the fixing tool is passed through the fixing tool insertion hole 42a, whereby the wall fixing portion 35a is connected to the wall panel. 14.

  The cover support part 36a supports the bathroom side cover 9 (see FIG. 7). The cover support part 36 protrudes inward in the horizontal direction from the lower end of the vertical surface part 34a. The bathroom side cover 9 is placed on the upper surface of the cover support portion 36a via packing.

  The spacer holding part 37 a holds the spacer 5. The spacer holding portion 37a protrudes inward in the horizontal direction from an intermediate portion in the vertical direction of the vertical surface portion 34a. A pair of protrusions 40a for positioning the spacer 5 in the horizontal direction are provided at the tip of the spacer holding portion 37a.

  The holding fixture 41a is a portion for fixing a holding member 47 (see FIG. 7) that holds the light guide plate 61 of the planar light emitter 6 from above. The presser fixing portion 41a is provided at the upper end of the vertical surface portion 34a. The presser fixing portion 41a is provided with a screw hole 43a that can be screwed in the vertical direction.

  As shown in FIG. 3, a long frame 32 is connected and fixed to both ends of the short frame 33 in the length direction. The illuminating device 2 of the present embodiment includes a first frame 44 along the upper end of the wall panel 14 and a second frame 45 to which the light source unit 7 of the planar light emitter 6 is attached as the long frame 32.

  An enlarged cross-sectional view of the first frame 44 is shown in FIG. The first frame 44 includes a vertical surface portion 34b, a wall fixing portion 35b, a cover support portion 36b, a spacer holding portion 37b, and a pressing fixing portion 41b.

  The vertical surface portion 34 b has a length in a direction parallel to the length direction of the mounting opening 15. The vertical surface portion 34b is provided with two fixing holes 95 that are connected to the vertical surface portion 34a of the short frame 33 via a fixing tool. Similar to the short frame 33, the vertical surface portion 34b is provided with a wall fixing portion 35b, a cover support portion 36b, a spacer holding portion 37b, and a pressing fixing portion 41b. Note that the wall fixing portion 35b, the cover support portion 36b, the spacer holding portion 37b, and the pressing fixing portion 41b are the same as the structure in the short frame 33, and thus the description thereof will be omitted (hereinafter, the same numerals are given to the same numerals with the same numerals). In the case where the same structure is described together, it is indicated by a reference numeral only).

  FIG. 6 shows an enlarged cross-sectional view of the second frame 45. The second frame 45 is parallel to the first frame 44 and is disposed away from the mounting opening 15 in the width direction. The second frame 45 includes a vertical surface portion 34c, a cover support portion 36c, a spacer holding portion 37c, and a light source attachment portion 46.

  The vertical surface portion 34 c has a length in a direction parallel to the length direction of the mounting opening 15. The length of the vertical surface portion 34 c is continuous over the entire length between the opposing wall panels 14. Moreover, the edge part of the ceiling panel 11 is connected to the vertical surface part 34c through the fixing tool.

  A cover support portion 36c is provided at the lower end of the vertical surface portion 34c. The cover support portion 36 c extends in the horizontal direction, and the upper surface thereof is located on the same plane as the upper surfaces of the cover support portion 36 a of the short frame 33 and the cover support portion 36 b of the second frame 45. The lower surface of the cover support portion 36 c is flush with the lower surface of the ceiling panel 11 and is exposed in the bathroom 1.

  The spacer holding part 37 c holds the spacer 5. The spacer holding portion 37c includes a standing portion 38 that protrudes upward from the middle in the extending direction of the cover support portion 36c, a holding piece 39 provided at the upper end of the standing portion 38, and a tip of the holding piece 39. And a pair of protrusions 40c provided.

  The light source attachment part 46 is a part to which the light source part 7 is attached. The light source mounting portion 46 is provided at the upper end of the vertical surface portion 34. The light source mounting portion 46 protrudes in the horizontal direction from the upper end of the vertical surface portion 34c toward the second frame 45 side.

  The spacer 5 is attached to the frame main body 31 having such a configuration. As shown in FIG. 7, the spacer 5 is placed on the bathroom side cover 9 in a state where the bathroom side cover 9 is placed on the cover support portion 36. The light guide plate 61 of the planar light emitter 6 is placed on the upper surface of the spacer 5. That is, the spacer 5 maintains the distance between the planar light emitter 6 and the bathroom side cover 9. The illuminating device 2 according to the present embodiment includes a first spacer 51 and a second spacer 57 used as an attachment location of the light source unit 7 as the spacer 5.

  As shown in FIG. 8, the first spacer 51 includes a lower horizontal piece 52a, a vertical piece 53a, and an upper horizontal piece 54a. The lower horizontal piece 52 a is placed on the peripheral edge of the bathroom side cover 9. An L-shaped leg piece 55a is provided at the tip of the lower horizontal piece 52a. The lower end of the leg piece 55a is configured to contact or be in close proximity to the upper surface of the cover support portion 36 of the frame body 31.

  The vertical piece 53a extends upward from the inner end of the lower horizontal piece 52a. An upper horizontal piece 54a extends outward from the upper end of the vertical piece 53a. As shown in FIG. 9, a light guide plate 61 of the planar light emitter 6 is placed on the upper horizontal piece 54a. Therefore, the vertical piece 53 a is provided over the entire length from the light guide plate 61 to the bathroom side cover 9.

  As shown in FIG. 8, an insertion piece 56a protruding downward is provided at the tip of the upper horizontal piece 54a. Thereby, the upper horizontal piece 54a is formed in an L-shaped cross section. The insertion piece 56 a is fitted into the pair of protrusions 40 a and 40 c of the spacer holding portion 37 of the frame body 31. Thereby, the first spacer 51 is held at a predetermined position of the frame body 31.

  The first spacer 51 is attached to the short frame 33 and the first frame 44 among the short frame 33 and the long frame 32 (the first frame 44 and the second frame 45) of the frame body 31. As shown in FIG. 9, the first spacer 51 has a lower horizontal piece 52a placed on the bathroom-side cover 9 placed on the cover support portion 36b (36a) of the frame body 31, and an insertion piece 56a. It is inserted and attached to the spacer holding part 37b (37a).

  As shown in FIG. 10, the second spacer 57 includes a lower horizontal piece 52b, a vertical piece 53b, an upper horizontal piece 54b, and a light source receiver 58. The lower horizontal piece 52 b is placed on the peripheral edge of the bathroom side cover 9. An L-shaped leg piece 55b is provided at the tip of the lower horizontal piece 52b. The lower end of the leg piece 55b hits the upper surface of the cover support portion 36 of the frame body 31 or is in close contact with it.

  The vertical piece 53b extends upward from the inner end of the lower horizontal piece 52b. An upper horizontal piece 54b extends outward from the upper end of the vertical piece 53b. The light guide plate 61 of the planar light emitter 6 is placed on the upper horizontal piece 54b.

  An insertion piece 56b protruding downward is provided in the middle of the extending direction of the lower horizontal piece 52b. The insertion piece 56b is fitted into the pair of protrusions 40c of the spacer holding portion 37c of the second frame 45. Thereby, the second spacer 57 is held at a predetermined position of the frame main body 31.

  The light source receiver 58 is provided at the tip of the upper horizontal piece 54 in the extending direction. The light source receiver 58 is formed in a U-shaped cross section that opens upward, and the lower end of the light source unit 7 is accommodated.

  The second spacer 57 is attached to the second frame 45 as shown in FIG. The second spacer 57 is mounted on the bathroom side cover 9 placed on the cover support portion 36c of the frame body 31 with the lower horizontal piece 52b placed and the insertion piece 56b inserted into the spacer holding portion 37c. .

  A packing is interposed between the spacer 5 and the bathroom side cover 9. A light guide plate 61 of the planar light emitter 6 is placed on the upper surface of the upper horizontal piece 54 of the spacer 5 via packing. Further, the first spacer 51 and the second spacer 57 have a rectangular frame shape when attached to the frame body 31, but packing is formed at a corner portion formed by the first spacer 51 and the second spacer 57. Sandwiched. Thereby, the space enclosed by the bathroom side cover 9, the spacer 5, and the light guide plate 61 is in an airtight state, and forms a heat insulating space.

  The planar light emitter 6 is a light emitting device that emits light in a planar shape toward the inside of the bathroom 1. As shown in FIG. 12, the planar light emitter 6 includes a light guide plate 61 and a light source unit 7. Reference numeral 91 in the drawing denotes an upper cover that covers the upper surface of the light guide plate 61.

  Here, the planar light emitter 6 is not limited to an edge light type surface light emitting device, but also includes a light emitting device that emits light in a planar shape by arranging a number of point light sources composed of LEDs vertically and horizontally on the same plane.

  The light guide plate 61 takes in the light emitted from the light source unit 7 from the end face and emits it from the lower face to illuminate the room. The light guide plate 61 is configured by a transparent plate such as acrylic or glass. The light guide plate 61 has a width in a direction parallel to the width direction of the mounting opening 15 and a length in a direction parallel to the length direction of the mounting opening 15, thereby forming a rectangular shape in plan view. . The light guide plate 61 has a thickness in the vertical direction.

  As shown in FIG. 11, the light guide plate 61 includes an incident surface 62, a diffusion portion 63, and an output surface 64. The incident surface 62 is an end surface for taking light emitted from the light source unit 7 into the light guide plate 61. The incident surface 62 is configured by an end surface on the side where the inspection port 12 is disposed, of the pair of end surfaces in the width direction of the light guide plate 61.

  The diffusing unit 63 diffuses the light that has entered the light guide plate 61 from the incident surface 62 and reflects the light toward the output surface 64. The diffusion part 63 is formed on the upper surface of the light guide plate 61. The diffusion part 63 is formed by, for example, printing a dot pattern on the upper surface of the light guide plate 61.

  The emission surface 64 is a surface for emitting the light taken into the light guide plate 61 to the outside. The emission surface 64 is configured by the lower surface of the light guide plate 61.

  As shown in FIG. 12, the light guide plate 61 is pressed by the pressing member 47 while being disposed on the spacer 5, and is thereby fixed to the mounting frame 3. When the light guide plate 61 is attached to the attachment frame 3, the light guide plate 61 covers the attachment opening 15 provided on the ceiling from above.

  The light source unit 7 is disposed along the length direction of the second frame 45 of the mounting frame 3. The light source unit 7 includes a plurality of main body units 71 (three in the present embodiment). The plurality of main body portions 71 are arranged linearly along the second frame 45 of the mounting frame 3.

  The main body 71 extends along the length direction of the second frame 45. The main body 71 is configured to emit light in a horizontal direction perpendicular to the longitudinal direction.

  As shown in FIG. 13, the main body portion 71 includes a heat transfer plate 72, a cover portion 80, and a light emitting portion 77. The heat transfer plate 72 includes a receiving piece 73 that supports the light emitting portion 77, a support piece 74 that protrudes outward from the upper end of the receiving piece 73, and a connecting piece 76 that protrudes inward from the upper end of the receiving piece 73. It has. The heat transfer plate 72 is made of metal. The heat transfer plate 72 is configured such that the receiving piece 73 is thermally connected to the light emitting unit 77 and heat generated from the light emitting unit 77 is conducted.

  The light emitting unit 77 includes a substrate 78 and a plurality of LED (Light Emitting Diode) light emitting elements 79 mounted on the substrate 78. The plurality of LED light emitting elements 79 are arranged at regular intervals along the length direction of the main body 71. The light emitting unit 77 is attached to the heat transfer plate 72 and is covered with a cover unit 80. The light emitting unit 77 generates heat when light emission continues for a certain time.

  The cover part 80 covers the light emitting part 77 from the side and protects the light emitting part 77. The cover 80 is attached with the lower end connected to the receiving piece 73 and the upper end connected to the connecting piece 76. The cover portion 80 includes a pair of protrusions 81 provided on both upper and lower sides of the LED light emitting element 79 and a transmission portion 82 provided between the protrusions 81.

  The protrusion 81 protrudes from the cover portion 80 toward the substrate 78. The tip of the protrusion 81 is in contact with or close to the substrate 78. The transmission part 82 is made of a transparent resin. Note that, in the cover portion 80, portions other than the transmission portion 82 are made of a light-reflective resin material (for example, a white resin material). That is, the cover 80 is a two-color molded product.

  The cover 80 is provided with a pressing protrusion 83 that protrudes toward the light guide plate 61. The pressing projection 83 is configured to press the light guide plate 61 from above when the light source unit 7 is attached to the mounting frame 3. The pressing protrusion 83 is also made of a white resin material.

  As shown in FIG. 11, the light source unit 7 having such a configuration is mounted with the heat transfer plate 72 mounted on the light source mounting unit 46 of the second frame 45. At this time, at least a part of the heat transfer plate 72 is thermally connected to the light source mounting portion 46. The lower end of the light source unit 7 is accommodated in the light source receiver 58 of the second spacer 57. The light source receiver 58 is also thermally connected to the light source unit 7.

  A heat insulating cover 92 that covers the light source unit 7 is provided outside the light source unit 7 (upper side in the present embodiment). The heat insulating cover 92 is configured to cover the heat transfer plate 72 of the light source unit 7. As a result, the heat transfer plate 72 can prevent the heat received from the light emitting unit 77 from radiating as much as possible. The heat insulating cover 92 is made of, for example, an EPDM foam sheet.

  The heat insulating cover 92 is detachably attached to the heat transfer plate 72. The heat insulating cover 92 may be attached by a fixing tool or may be attached by adhesion. When the heat insulating cover 92 is attached by adhesion, the heat insulating cover 92 is in close contact with the heat transfer plate 72, and thus heat radiation from the heat transfer plate 72 can be suppressed.

  When the light emitting part 77 emits light, most of the light passes through the transmission part 82 and directly enters the light guide plate 61, and a part of the light is incident on the boundary surface between the transmission part 82 and other parts and the projection 81. The light is reflected and enters the light guide plate 61. Therefore, according to the illumination device 2 of the present embodiment, the light loss is suppressed by the cover 80.

  The incident light repeats total reflection inside the light guide plate 61, diffusely reflects to the diffusion portion 63 of the light guide plate 61, and exits from the exit surface 64. Then, the lower surface of the light guide plate 61 emits light in a planar shape. The light emitted from the exit surface 64 of the light guide plate 61 passes through the bathroom side cover 9 and illuminates the interior of the bathroom 1.

  At this time, when the light emitting unit 77 continues to emit light for a certain period of time and the light emitting unit 77 generates heat, the heat is conducted to the heat transfer plate 72 and is conducted to the second frame 45 as it is. Then, the temperature of the second frame 45 rises and the occurrence of condensation is suppressed.

  The bathroom side cover 9 is a resin plate having translucency. As shown in FIG. 7, the bathroom-side cover 9 is disposed at a predetermined distance in the light emitting direction of the planar light emitter 6 and covers the planar light emitter 6 from the bathroom 1 side. The lower surface of the bathroom-side cover 9 is disposed so as to be flush with the ceiling of the bathroom 1 (the inner surface of the bathroom 1). The bathroom side cover 9 may be, for example, a diffusion plate that has been subjected to a textured process, or a transparent plate.

  Note that the term “level” here is not limited to the level in the strict sense, but is included in the same concept as long as it can be regarded as level in terms of appearance.

  The upper cover 91 covers the entire upper surface of the light guide plate 61 over the entire surface. The upper cover 91 is made of an EPDM foam sheet and has a heat insulating property. Further, in the lighting device of the present embodiment, a portion surrounded by the bathroom side cover 9, the spacer 5, and the light guide plate 61 forms a heat insulating space. For this reason, according to the illuminating device of this embodiment, heat can be made difficult to escape through the mounting opening, and the bathroom side cover 9 is difficult to cool, so that the occurrence of condensation on the bathroom side cover 9 is suppressed. You can also.

  As described above, the lighting device 2 according to the present embodiment includes the following first feature. In the first feature, the lighting device 2 includes a planar light emitter 6 having a light source unit 7, a mounting frame 3 that attaches the planar light emitter 6 to the mounting opening 15, and a heat insulating cover 92 that covers the outside of the light source unit 7. With. The mounting frame 3 is thermally connected to the light source unit 7.

  According to the lighting device 2 having the first feature, when the light source unit 7 emits light, the light source unit 7 generates heat, but this heat is conducted to the mounting frame 3. At this time, since the light source unit 7 is covered with the heat insulating cover 92, it is possible to suppress heat dissipation without being conducted to the mounting frame 3. As a result, the exhaust heat generated from the light source unit 7 can be effectively conducted to the mounting frame 3, and the occurrence of condensation on the mounting frame 3 can be suppressed.

  Moreover, it is preferable that the illuminating device 2 of this embodiment has the following 2nd and 3rd characteristics. The second and third features are not necessarily required for the present invention, but are arbitrary configurations.

  In the second feature, in the first feature, the light source unit 7 includes an LED light emitting element 79 and a heat transfer plate 72 thermally connected to the LED light emitting element 79. The heat transfer plate 72 is covered with a heat insulating cover 92. The attachment frame 3 is thermally connected to the light source unit 7 via the heat transfer plate 72.

  According to the lighting device 2 having the second feature, even when the light source unit 7 is separated from the mounting frame 3, heat from the light source unit 7 is effectively conducted to the mounting frame 3 via the heat transfer plate 72. can do.

  In the third feature, in the first or second feature, the heat insulating cover 92 is detachably attached to the light source unit 7.

  According to the lighting device 2 having the third feature, even if the heat insulating cover 92 is deteriorated due to dew condensation generated around the heat insulating cover 92, it can be easily replaced.

  In addition, although the illuminating device 2 of this embodiment had the structure which cannot remove the bathroom side cover 9 from the inside of the bathroom 1, as shown in FIG.14, 15, the bathroom side cover 9 was removed from the inside of a bathroom. It is good also as a structure which can maintain the light source part 7. FIG. Hereinafter, the examples of FIGS. 14 and 15 will be described as modified examples.

  The lighting device 2 of the modified example includes a support member 36d to which the cover support portion 36c of the second frame 45 is detachably fixed via a fixing tool. The support member 36d supports the bathroom side cover 9. When the support member 36 d is removed from the second frame 45, the bathroom side cover 9 and the second spacer 57 can be removed from the bathroom 1.

  The short frame 33 and the first frame 44 have the same structure. Therefore, the first frame 44 will be described. As shown in FIG. 15, the cover support portion 36 b of the first frame 44 has a support member 36 d that is detachably fixed via a fixing tool. The support member 36d supports the bathroom side cover 9. When the support member 36 d is removed from the first frame 44, the bathroom side cover 9 can be removed from the bathroom 1. At this time, the first spacer 51 cannot be removed from the first frame 44.

  The user can remove the bathroom-side cover 9 from the bathroom 1 by removing the support member 36d. Then, as shown in FIG. 14, the second spacer 57 can be removed. At this time, the light guide plate 61 is supported by the first spacer 51.

  The light source unit 7 has a structure in which the light emitting unit 77 and the cover unit 80 can be detached by pulling them downward. Therefore, if the user removes the bathroom side cover 9 and removes the second spacer 57, the user can remove the light emitting portion 77 from the bathroom 1 and perform maintenance.

  As described above, the illumination device 2 according to the embodiment preferably has the fourth feature described below.

  In the fourth feature, in any one of the first to third features, a bathroom-side cover 9 that covers the light emitting direction of the planar light emitter 6 is attached to the attachment frame 3. The bathroom side cover 9 has translucency. The bathroom side cover 9 is detachably attached to the mounting frame 3.

  According to the lighting device 2 having the fourth feature, the user can remove the bathroom-side cover 9 from the interior of the bathroom 1 and can easily perform maintenance of the light source unit 7.

  Moreover, the attachment structure of the illuminating device 2 of this embodiment has the following 5th characteristic. In the fifth feature, the lighting device 2 having the first feature is attached to the bathroom 1. The lighting device 2 has a bathroom-side cover 9 that is attached to the attachment frame 3 and covers the light emitting direction of the planar light emitter 6. The bathroom side cover 9 has translucency. The lower surface of the bathroom side cover 9 is disposed so as to be flush with the inner surface of the bathroom 1.

  According to the mounting structure of the lighting device 2 having the fifth feature, since the surface of the bathroom-side cover 9 is flush with the ceiling of the bathroom 1, the bathroom-side cover 9 protrudes from the ceiling of the bathroom 1, and the appearance Can be prevented from being damaged. In addition, since the surface of the bathroom cover 9 and the ceiling of the bathroom 1 are flush with each other, the user can feel the bathroom 1 widely.

  In addition, although the illuminating device 2 of this embodiment was installed in the ceiling of the bathroom 1, the installation opening may be provided in the wall panel 14, for example, and you may install in this installation opening.

DESCRIPTION OF SYMBOLS 1 Bathroom 11 Ceiling panel 14 Wall panel 15 Mounting opening 16 Heat insulating material 2 Illuminating device 3 Mounting frame 31 Frame main body 34 Vertical surface part 35 Wall fixing part 36 Cover support part 37 Spacer holding part 41 Holding | fixing fixing part 44 1st frame 45 2nd frame 46 Light source mounting part 47 Holding member 5 Spacer 51 First spacer 57 Second spacer 6 Planar light emitter 61 Light guide plate 7 Light source part 71 Main body part 72 Heat transfer plate 77 Light emitting part 78 Substrate 79 LED light emitting element 9 Bathroom side cover 92 Thermal insulation cover

Claims (5)

A lighting device attached to a mounting opening of a bathroom,
A planar light emitter having a light source and emitting light into the bathroom;
An attachment frame for attaching the planar light emitter to the attachment opening;
A heat insulating cover that covers the outside of the light source unit;
The illuminating device , wherein the attachment frame is attached to a periphery of the attachment opening so as to surround the attachment opening, and is thermally connected to the light source unit. The light source unit is
An LED light emitting element;
A heat transfer plate thermally connected to the LED light emitting element and covered with the heat insulating cover;
The lighting device according to claim 1, wherein the mounting frame is thermally connected to the light source unit via the heat transfer plate. The lighting device according to claim 1, wherein the heat insulating cover is detachably attached to the light source unit. The mounting frame is attached with a bathroom side cover that covers the light emitting direction of the planar light emitter and has translucency,
The lighting device according to any one of claims 1 to 3, wherein the bathroom side cover is detachable from the mounting frame. An attachment structure in which the lighting device according to claim 1 is attached to a bathroom,
The lighting device includes a bathroom-side cover that is attached to the attachment frame and covers a light emitting direction of the planar light emitter and has translucency,
The mounting structure of the lighting device, wherein the bathroom-side cover is arranged so that an inner surface of the bathroom is flush with an inner surface of the bathroom.

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