Indirect lighting structure

Abstract

To provide an indirect lighting structure which hides a light source and which is high in designability.SOLUTION: An indirect lighting structure 1 comprises: a holding tool 6 including first tops 3a, 3b, rear ends 5a, 5b formed below the first tops 3a, 3b, a fitting part 60 fixed above the first tops 3a, 3b and extending downward in a support member fixed to a structural skeleton, and an arm 61 protruding from the fitting part 60 down with a distance from the first tops 3a, 3b; a backing board 7 including a base end fixing part 70 fixed along the arm 61, a groove forming part 71 further extending from the base end fixing part 70 to have a groove 77 formed at the rear ends 5a, 5b on the upper surface, and a tip inclined part 72 having a rising surface 75 rising from a bottom surface 78 of the groove 77 and an inclined surface 76 of a down-grade toward the tip, and serving as a base for a second top 10 lower than the first tops; and a light source 8 disposed in the groove 77.SELECTED DRAWING: Figure 2

Description

Technical Field

[0004] ,

[0006] , , , , ,

[0005] , , , Extending vertically , , ,

[0001] The present invention relates to an indirect lighting structure.

Background Art

[0002] Conventionally, indirect lighting that reflects light off the ceiling and illuminates the surroundings with the reflected light has been used. For example, the indirect lighting disclosed in Patent Document 1 has a support base fixed to the side surface of a beam protruding downward from the ceiling, and a light source disposed on the support base irradiates the ceiling.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] By the way, indirect lighting creates depth and a sense of spaciousness in a space with soft light, but such advantages cannot be achieved if the light source is directly visible to the users of the space where the indirect lighting is installed.

[0005] Therefore, an object of the present invention is to provide an indirect lighting structure that hides the light source and has high design quality.

Means for Solving the Problems

[0006] A first indirect lighting structure for solving the above problems includes a first ceiling, and the first ceiling A planar surface connected to the lower end a rear end portion, fixed to a support member fixed to a structural body, and along the rear end portion Extending vertically a mounting portion, and an arm portion protruding from the mounting portion in a direction intersecting the rear end portion below and at a distance from the first ceiling, and a holder having the arm portion, a proximal end fixing portion fixed along the arm portion, and further extending from the proximal end fixing portion and having a rear end portion on the upper surface Parallel and horizontallyThe lighting base plate has a groove-forming portion in which a groove is formed, a rising surface rising from the bottom surface of the groove, and a tip inclined portion having a downward sloping surface from the upper end of the rising surface toward the tip, and the lower surface of the lighting base plate serves as the base for a second ceiling which is lower than the first ceiling, and a light source is placed in the groove.

[0007] The second indirect lighting structure is provided with a plurality of lighting base plates in the first indirect lighting structure, and the lighting base plates are arranged in a direction parallel to the rear end, and the second ceiling is formed by attaching a plurality of ceiling boards to the underside of the lighting base plates in a direction parallel to the rear end, and the joints between the lighting base plates and the joints between the ceiling boards are arranged to be offset from each other in a direction parallel to the rear end.

[0008] The third indirect lighting structure is the second indirect lighting structure wherein the lighting base plate has a vertical through hole and is fixed to the arm by a base fixing bolt inserted into the through hole from below, and the lower end of the through hole is enlarged to form a deep counterbore hole into which the head of the base fixing bolt fits.

[0009] The fourth indirect lighting structure further includes a third ceiling extending from the lower end of the rear end, in the same direction as the second indirect lighting structure, and flush with the second ceiling, in the opposite direction to the protruding direction of the arm.

[0010] The fifth indirect lighting structure is one of the first to fourth indirect lighting structures, wherein the light source is placed on the bottom surface of the groove so as to be movable in the width direction of the groove.

[0011] The sixth indirect lighting structure is one of the first to fifth indirect lighting structures in which the height of the light source is equal to the height of the rising surface of the tip inclined portion.

[0012] The seventh indirect lighting structure is an indirect lighting structure of any of the first to sixth, wherein the light source has a first surface facing the inclined tip side and a second surface facing the rear end side, and the second surface emits light with a higher luminous intensity than the first surface.

[0013] The eighth indirect lighting structure is the first indirect lighting structure of the first to seventh indirect lighting structures, wherein the first ceiling has a first inclined surface rising in a direction away from the rear end, a second inclined surface descending in a direction away from the first inclined surface, and a connecting surface connecting the first inclined surface and the second inclined surface, wherein the connecting surface is a curved surface that smoothly connects with the upper end of the first inclined surface and the upper end of the second inclined surface and bulges upward, and the curved surface is formed below the main beam.

[0014] The ninth indirect lighting structure is formed such that, in the eighth indirect lighting structure, the end of the second inclined surface that is away from the connecting surface extends to a position lower than the lighting base plate. [Effects of the Invention]

[0015] According to the first indirect lighting structure, the mounting portion of the holder is fixed to a support member fixed to the structural frame above the first ceiling, and the arm portion of the holder is fixed to the base end fixing portion of the lighting base plate. As a result, the lighting base plate is firmly fixed to the structural frame via the holder and support member, and the groove-forming portion and the tip-inclined portion can be further extended from the base end fixing portion, allowing the lighting base plate to be extended in a direction intersecting the rear end. Therefore, the rear end is positioned deep within the space formed between the first ceiling and the lighting base plate, making the rear end and light source less visible from the indoor space below the second ceiling, thus improving the aesthetic appeal. Furthermore, the tip-inclined portion of the lighting base plate hides the light source with its rising surface, and the inclined surface is formed with a downward slope towards the tip, making the tip thinner than the overall thickness of the lighting base material, thus creating a sharp impression. Furthermore, by providing a sloping tip section, the sloping tip section can be made lighter than the base fixing section, allowing the lighting base plate to be extended in a direction that intersects the rear end.

[0016] According to the second indirect lighting structure, the lighting base plates are arranged in a direction parallel to the rear end, and the ceiling plates are attached to the underside of the lighting base plates in a direction parallel to the rear end. Since the joints between the lighting base plates and the joints between the ceiling plates are offset from each other in a direction parallel to the rear end, the ceiling plates can prevent vertical displacement between the lighting base plates, thus preventing a decrease in the aesthetic appeal of the second ceiling.

[0017] According to the third indirect lighting structure, a deep counterbore hole is formed at the lower end of the through-hole that vertically penetrates the lighting base plate. As a result, the heads of the base fixing bolts used to secure the lighting base plate to the arm do not protrude from the underside of the lighting base plate, allowing the ceiling plate to be precisely attached to the underside of the lighting base plate and resulting in a smooth finish for the second ceiling.

[0018] According to the fourth indirect lighting structure, the third ceiling further includes a third ceiling that extends from the lower end of the rear end, flush with the second ceiling and in the opposite direction to the protruding direction of the arm. This eliminates the need to align the position where the rear end is provided with the exterior wall or partition wall, thereby increasing the degree of freedom in the position where the rear end and the lighting base plate are installed, and improving the design freedom of the position where indirect lighting is formed.

[0019] According to the fifth indirect lighting structure, the light source is placed on the bottom surface of the groove so as to be movable in the width direction of the groove. By adjusting the position of the light source, the direction and illuminance of the light irradiated onto the first ceiling can be adjusted, making it easy to adjust according to various factors such as the shape of the first ceiling and the user's preferences.

[0020] According to the sixth indirect lighting structure, since the height of the light source is equal to the height of the rising surface of the inclined tip, the light source can be reliably hidden from heights lower than the lighting base plate, resulting in soft and ambient lighting.

[0021] According to the seventh indirect lighting structure, since the second surface facing the rear end side of the light source emits light with a higher luminous intensity than the first surface facing the tip inclined portion side, it is possible to suppress strong light from directly irradiating the first ceiling, and to achieve indirect lighting with softer light.

[0022] According to the eighth indirect lighting structure, while the first ceiling is a gabled sloped ceiling, the connecting surface connecting the first inclined surface and the second inclined surface is a curved surface that smoothly connects, and since this curved surface is formed below the ridge beam, there is nothing to block the light from reaching the first ceiling, and also, no bending portion is formed on the first ceiling, so the illuminance of the light irradiating the first ceiling is smoothly continuous, and the light from the light source can reach far away, and at the same time, the entire indoor space below the first ceiling can be wrapped in soft light with minimal lighting.

[0023] According to the ninth indirect lighting structure, since the end portion of the second inclined surface on the side away from the connecting surface extends to a position lower than the lighting underfloor, the first ceiling can be extended longer, and the light from the light source can reach further smoothly. Also, since the position farthest from the light source on the second inclined surface is formed lower than the lighting underfloor, it is possible to more effectively suppress the direct visual recognition of the light source.

Brief Description of the Drawings

[0024] [Figure 1] Cross-sectional view explaining the overall configuration of the indirect lighting structure of the first embodiment. [Figure 2] Enlarged cross-sectional view of the portion where the lighting underfloor of the indirect lighting structure of the first embodiment is provided. [Figure 3] Perspective view explaining the external configuration of the fixture of the indirect lighting structure of the first embodiment. <000就0100> [Figure 4] Perspective view explaining the external configuration of the lighting underfloor of the indirect lighting structure of the first embodiment. [Figure 5] Cross-sectional view explaining the configuration of the lighting underfloor and the light source of the indirect lighting structure of the first embodiment. [Figure 6]An exploded perspective view illustrating the joint structure of the holder, lighting base plate, and ceiling plate of the indirect lighting structure of the first embodiment. [Figure 7] A cross-sectional view illustrating the overall configuration of the indirect lighting structure of the second embodiment. [Figure 8] An enlarged cross-sectional view of the portion of the indirect lighting structure of the second embodiment in which the lighting base plate is provided. [Modes for carrying out the invention]

[0025] [First Embodiment] The first embodiment of the indirect lighting structure of the present invention will be described below with reference to Figures 1 to 6. The indirect lighting structure 1a is a structure installed in an indoor space 2 of a building such as a house, and illuminates the indoor space 2 by irradiating light onto a first ceiling 3a that covers the indoor space 2. The indoor space 2 is assumed to be a living room, dining room, kitchen or other living room, but is not limited to this, and the indirect lighting structure 1a can be applied to various spaces for different purposes installed indoors. In a building where the indirect lighting structure 1a is installed, sloping beams 41 are provided on both sides of a main beam 40 with a downward slope, and rafters 42, roof sheathing 43, roofing material 44, and roofing material 45 are arranged on the sloping beams 41 to form a gable roof 4. The roof shape of the building in which the indirect lighting structure 1a is installed in the present invention is not limited to a gable roof 4. Furthermore, the building in which the indirect lighting structure 1a is installed is not limited to a house.

[0026] As shown in Figures 1 and 2, the indirect lighting structure 1a comprises a first ceiling 3a, a rear end portion 5a extending downward from the first ceiling 3a, an angle-shaped holder 6 extending downward along the rear end portion 5a and protruding in a direction intersecting the rear end portion 5a, a lighting base plate 7 fixed to the holder 6, and a light source 8 positioned in a groove 77 formed in the lighting base plate 7.

[0027] In this embodiment, the first ceiling 3a is a ceiling having a slope that follows the shape of the roof. The first ceiling 3a has a first inclined surface 30 that rises in the direction away from the rear end 5a, a second inclined surface 31 that descends in the direction away from the first inclined surface 30, and a connecting surface 32 that connects the first inclined surface 30 and the second inclined surface 31. The upper end of the first inclined surface 30 is connected to the connecting surface 32, and the lower end is connected to the rear end 5a. The upper end of the second inclined surface 31 is connected to the connecting surface 32 on the opposite side from the first inclined surface 30, and the lower end is connected to a wall surface 46 that is formed parallel to the rear end 5a and on the opposite side of the indoor space 2.

[0028] The first inclined surface 30 and the second inclined surface 31 are formed by attaching panel material such as gypsum board to furring strips 33 that are suspended from the main beam 40 below the downward-sloping inclined beam 41. The connecting surface 32 is formed by attaching panel material to a base material 34 fixed below the main beam 40. The panel material of the connecting surface 32 is formed by smoothly connecting the upper ends of the first inclined surface 30 and the upper ends of the second inclined surface 31, and is formed to bulge upward and curve. The connecting surface 32 is formed in the shape of a circular arc with a radius of 2000 mm, and the first inclined surface 30 and the second inclined surface 31 are planes with a slope of 4 / 10 each, sloping downward in opposite directions away from the connecting surface 32.

[0029] The lower surfaces of the panel materials forming the first inclined surface 30, the second inclined surface 31, and the connecting surface 32 are coated with a finishing decorative material 35 made of plastering material, so that each surface is smoothly and integrally formed. The panel material forming the connecting surface 32 is curved so that it is formed at a lower position than the main beam 40, so that the main beam 40 does not protrude from the first ceiling 3a. In addition, the roof is supported by a sloping beam 41 formed above the first inclined surface 30 and the second inclined surface 31, so that structural members such as purlins 36 and roof beams 37 do not protrude from the first inclined surface 30 and the second inclined surface 31. Furthermore, the first ceiling 3a is completely free of fixtures that would cause protrusions, such as lighting fixtures, various sensors such as fire alarms, and air conditioning equipment. As a result, the first ceiling 3a is a perfectly smooth surface, and the light shining on the first ceiling 3a extends to a position far from the light source 8 without being blocked. Furthermore, because there is a first inclined surface 30 and a second inclined surface 31, the light reflected by the first inclined surface 30 is further reflected by the second inclined surface 31, allowing the indoor space 2 formed below to be illuminated further, and the entire indoor space 2 below the first ceiling 3a to be enveloped in soft light with minimal lighting. It should be noted that the description that the first ceiling 3a is a perfectly smooth surface does not exclude configurations in which slight indentations occur on the first ceiling 3a, such as slight recesses at the joints between the panel materials forming the first inclined surface 30, the second inclined surface 31, and the connecting surface 32, or slight irregularities due to the properties of the finishing decorative material 35.

[0030] The first ceiling 3a is formed such that the end of the second inclined surface 31 away from the connecting surface 32 extends to a position lower than the lighting base plate 7. Specifically, the length of the second inclined surface 31 from the connecting surface 32 to the wall surface 46 is longer than the length of the first inclined surface 30 from the rear end 5a to the connecting surface 32, and the second inclined surface 31 is positioned 1 m longer horizontally than the first inclined surface 30. As a result, the height of the lower end of the second inclined surface 31 is lower than the height of the lower end of the first inclined surface 30. The height β of the position where the lower end of the second inclined surface 31 connects to the wall surface 46 is 2025 mm from the floor of the indoor space 2, and the height α of the lower surface of the lighting base plate 7 is 2358 mm from the floor of the indoor space 2.

[0031] In this way, by extending the lower end of the second inclined surface 31 to a position lower than the lighting base plate 7, the first ceiling 3a can be extended in length, allowing light from the light source 8 to reach further and more smoothly. Furthermore, by forming the position of the second inclined surface 31 furthest from the light source 8 lower than the lighting base plate 7, the visibility of the light source 8 can be more effectively suppressed.

[0032] The rear end portion 5a is supported by a column 47 extending from below and is formed by the indoor side surface of a girder beam 48 to which the lower end of the sloping beam 41 is joined. In this embodiment, the "structural frame" in the present invention corresponds to the column 47 that supports the girder beam 48, and the "supporting member" in the present invention corresponds to the girder beam 48. The rear end portion 5a is a planar shape extending downward from the lower end of the first ceiling 3a. In this embodiment, the rear end portion 5a is formed by the side surface of the girder beam 48, but it may also be made of decorative material (not shown) attached to facilitate reflection of light from the light source 8.

[0033] As shown in Figure 3, the holder 6 has a mounting portion 60 and an arm portion 61 made of steel angle material, and a reinforcing plate 62 that reinforces the mounting portion 60 and the arm portion 61. The mounting portion 60 is, for example, a long, flat plate in the vertical direction, and has screw insertion holes 63 at three locations on the top and bottom. The arm portion 61 is a flat plate that bends from the lower end of the mounting portion 60 and is formed, for example, extending in the horizontal direction. The arm portion 61 has three bolt insertion holes 65 into which base fixing bolts 64 can be inserted, arranged in the protruding direction B of the arm portion 61. The reinforcing plate 62 is a right-angled triangular steel plate, with one side forming a right angle welded to the mounting portion 60 and the other side welded to the arm portion 61, reinforcing the mounting portion 60 and the arm portion 61.

[0034] The retainer 6 is fixed to the girder beam 48, which serves as a support member fixed to the column 47 constituting the structural frame, at a position above the panel material forming the first inclined surface 30 of the first ceiling 3a. Specifically, with the mounting portion 60 of the retainer 6 in contact with the indoor side surface of the girder beam 48, screws 66 are driven into the girder beam 48 through the three screw insertion holes 63 to fix the retainer 6 to the girder beam 48. The position where the screws 66 are driven into the girder beam 48 is above the first inclined surface 30, and each screw 66 is hidden by the panel material forming the first inclined surface 30. The mounting portion 60 of the retainer 6 extends downward from the first ceiling 3a along the rear end portion 5a formed on the indoor side surface of the girder beam 48, and the arm portion 61 protrudes downward at a distance from the first ceiling 3a in a direction B that intersects with the rear end portion 5a. In this embodiment, the arm portion 61 protrudes in a direction perpendicular to the rear end portion 5a. Multiple retainers 6 are lined up and fixed along the girder beam 48.

[0035] As shown in Figures 4 and 5, the lighting base plate 7 has a plate-shaped base fixing portion 70 fixed to the arm portion 61, a groove forming portion 71 extending further from the base fixing portion 70, and a tip inclined portion 72 formed on the side of the groove forming portion 71 opposite to the base fixing portion 70.

[0036] The base fixing portion 70 has three vertical through holes 73 aligned in the protruding direction B of the arm portion 61. These through holes 73 are sized to accommodate base fixing bolts 64, and are formed in positions that overlap in a plan view with the bolt insertion holes 65 of the arm portion 61 when the base fixing portion 70 is brought into contact with the lower surface of the arm portion 61. The base fixing portion 70 is fixed to the arm portion 61 by inserting the base fixing bolts 64 from below the through holes 73 of the base fixing portion 70 into the through holes 73 and the bolt insertion holes 65 of the arm portion 61, and tightening the nuts 67. The three through holes 73 are also arranged in a direction A parallel to the rear end portion 5a, and each through hole 73 is positioned in a plan view to overlap in a plan view with the bolt insertion holes 65 of the multiple arm portions 61 that protrude from the rear end portion 5a. In this way, the lighting base plate 7 is fixed to the holder 6 fixed to the rear end portion 5a, and the lighting base plate 7 is cantilevered. Since the holder 6 is reinforced by a reinforcing plate 62 so that the arm portion 61 is maintained in a nearly horizontal position, the lighting base plate 7, which is cantilevered to the holder 6, can be made to protrude far in the protruding direction B of the arm portion 61, and the rear end portion 5a is positioned deep in the space formed between the first ceiling 3a and the lighting base plate 7, so that the rear end portion 5a and the light source 8 are less visible from the indoor space 2 below, thereby improving the aesthetic appearance. The lower end of the through hole 73 of the base fixing portion 70 is enlarged in diameter and is a deep counterbore hole 74 that accommodates the head 68 of the base fixing bolt 64.

[0037] The groove-forming portion 71 extends further from the base fixing portion 70, and a groove 77 is formed on the upper surface of the groove-forming portion 71 in a direction A parallel to the rear end portion 5a. The groove 77 is recessed further than the upper surface of the base fixing portion 70 and extends along the entire length in the direction A parallel to the rear end portion 5a of the lighting base plate 7, allowing the light source 8 to be installed. For example, the bottom surface 78 of the groove 77 is horizontal, and the surfaces on both sides are vertical.

[0038] The tip inclined portion 72 is formed adjacent to the groove portion 77. The tip inclined portion 72 has a rising surface 75 that rises from the bottom surface 78 of the groove portion 77 and an inclined surface 76 that slopes downward from the upper end of the rising surface 75 toward the tip. Because the inclined surface 76 of the tip inclined portion 72 is formed with a downward slope toward the tip, the tip can be made thinner than the overall thickness of the lighting base material, giving it a sharp impression. In addition, by providing the tip inclined portion 72, the side with the tip inclined portion 72 can be made lighter than the side with the base fixing portion 70, allowing the lighting base plate 7 to protrude longer in the protruding direction B of the arm portion 61.

[0039] The lower surface of the lighting base plate 7 has a base fixing portion 70, a groove forming portion 71, and a tip inclined portion 72, all of which are formed in a substantially horizontal planar shape. A ceiling plate 9 is attached to the lower surface of the lighting base plate 7 to form a second ceiling 10. The ceiling plate 9 is a flat gypsum board and is fixed to the lighting base plate 7 by screws (not shown). At this time, a deep counterbore hole 74 is formed at the lower end of the through hole 73 of the lighting base plate 7, so that the ceiling plate 9 can be fixed to the lower surface of the lighting base plate 7 with screws in close contact.

[0040] As shown in Figure 6, multiple lighting base plates 7 are arranged in a direction A parallel to the rear end 5a and fixed to their respective holders 6. Multiple ceiling plates 9 are attached to the underside of the lighting base plates 7 in a direction A parallel to the rear end 5a to form the second ceiling 10. The joints γ of the lighting base plates 7 and the joints ε of the ceiling plates 9 are offset from each other in a direction A parallel to the rear end 5a. Since the lighting base plates 7 are cantilevered, there is a possibility that some of the multiple arranged lighting base plates 7 may sag, causing vertical displacement between adjacent lighting base plates 7. However, by offsetting the ceiling plates 9, displacement at the joints γ of the lighting base plates 7 can be suppressed, and even if slight unevenness occurs, displacement at the joints ε of the ceiling plates 9 can be prevented, thus suppressing cracking in the finishing decorative material applied to the underside of the ceiling plates 9 and preventing a decrease in the aesthetic appearance of the second ceiling 10.

[0041] The light source 8 is a lighting fixture that emits light in a straight line, such as an LED line lighting fixture. The light source 8 is a long body that is positioned along the entire length of the groove 77 of the indirect lighting structure 1a. The light source 8 can emit light along its entire length by connecting a power supply to one end in the longitudinal direction. The cross-section of the light source 8 is approximately rectangular and has a flat lower surface 83, an upper surface 82 parallel to the lower surface 83, a first surface 80 which faces the tip inclined portion 72 when positioned in the groove 77, and a second surface 81 which faces the rear end portion 5a. The height of the light source 8 is 35 mm and the width of the light source 8 is 85 mm. The second surface 81 and the upper surface 82 of the light source 8 are connected so that the corners are curved. The second surface 81 of the light source 8 emits light with a higher luminous intensity than the first surface 80. By making the second surface 81 emit light at a higher luminosity than the first surface 80, the direct illumination of strong light onto the first ceiling 3a is suppressed, resulting in softer, indirect lighting. Note that the first surface 80 does not necessarily have to emit light.

[0042] The height of the rising surface 75 of the groove 77 of the lighting base plate 7 is 35 mm, which is equal to the height of the light source 8, which is 35 mm. Therefore, the light source 8 is completely fitted and placed in the groove 77, thereby ensuring that the light source 8 is hidden from heights lower than the lighting base plate 7, resulting in a softer lighting atmosphere. Furthermore, the light source 8 is not fixed to the lighting base plate 7, but is simply placed on the bottom surface 78 of the groove 77. This allows the light source 8 to move in the width direction of the groove 77, and the position of the light source 8 can be adjusted within the width of the groove 77 in the direction of approaching the tip inclined portion 72 and in the direction of approaching the rear end portion 5a.

[0043] As described above, according to the indirect lighting structure 1a of this embodiment, the first ceiling 3a is formed in a mountain shape by the first inclined surface 30 and the second inclined surface 31, but a curved connecting surface 32 is provided at the top, resulting in a smooth first ceiling 3a. Since no equipment that creates irregularities is installed on the first ceiling 3a, the light from the light source 8 can be smoothly transmitted over a long distance. Furthermore, since the lighting base plate 7 is firmly fixed to the structural frame via the holder 6 and support members, the lighting base plate 7 can be extended in a direction intersecting the rear end 5a. As a result, the rear end 5a is positioned deep within the space formed between the first ceiling 3a and the lighting base plate 7, making the rear end 5a and the light source 8 difficult to see from the indoor space 2 below. Moreover, the inclined tip 72 of the lighting base plate 7 can conceal the light source 8 while thinning the tip to create a sharp impression and improve the design. Furthermore, by making the inclined tip 72 side lighter, the lighting base plate 7 can be extended even further.

[0044] [Second Embodiment] Next, a second embodiment of the indirect lighting structure of the present invention will be described with reference to Figures 7 and 8. Components similar to those in the first embodiment will be denoted by the same reference numerals and their descriptions will be omitted. The indirect lighting structure 1b of the second embodiment, like the first embodiment, is a structure installed in an indoor space 2 of a building, such as a house, and illuminates the indoor space 2 by irradiating light onto a first ceiling 3b that covers the indoor space 2. Unlike the first embodiment, the first ceiling 3b of the indirect lighting structure 1b of the second embodiment is formed as a flat ceiling.

[0045] As shown in Figures 7 and 8, the indirect lighting structure 1b comprises a first ceiling 3b, a rear end portion 5b extending downward from the first ceiling 3b, an L-shaped holder 6 extending downward and protruding along the rear end portion 5b, a lighting base plate 7 fixed to the holder 6, and a light source 8 positioned in a groove 77 formed in the lighting base plate 7.

[0046] The first ceiling 3b is formed horizontally by attaching panel materials such as gypsum board to furring strips suspended below the horizontal beam 49. The underside of the panel materials forming the first ceiling 3b is formed by applying a finishing decorative material 35 made of plastering material. In this embodiment, the first ceiling 3b is the ceiling of the first floor of a two-story building, and the horizontal beam 49 is a floor beam that supports the floor surface of the second floor. The first ceiling 3b is not fitted with any fixtures that would cause irregularities, such as lighting fixtures, various sensors such as fire alarms, or air conditioning equipment. As a result, the first ceiling 3b is a perfectly smooth surface, and the light illuminating the first ceiling 3b extends to a position far from the light source 8 without being blocked. It should be noted that the description that the first ceiling 3b is a perfectly smooth surface does not exclude slight indentations at the joints between the panel materials constituting the first ceiling 3b or slight irregularities due to the properties of the finishing decorative material 35, as in the first embodiment.

[0047] The rear end portion 5b is a surface material, such as gypsum board, fixed to a reinforcing member 50 supported by the horizontal beam 49. In this embodiment, the "structural frame" corresponds to the horizontal beam 49, and the "supporting member" corresponds to the reinforcing member 50. The rear end portion 5b is a surface extending downward from the lower end of the first ceiling 3b. In this embodiment, the rear end portion 5b is made of gypsum board, but it may also be made of a decorative material, such as one not shown, to which a decorative material is attached.

[0048] The holder 6 has the same configuration as in the first embodiment, so its description will be omitted. The holder 6 has a mounting portion 60 and an arm portion 61 made of steel angle material, and a reinforcing plate 62 that reinforces the mounting portion 60 and the arm portion 61. The holder 6 is fixed to the reinforcing material 50 by inserting screws 66 into screw insertion holes 63 provided in the mounting portion 60 and driving them into the reinforcing material 50. The reinforcing material 50 is positioned above the panel material that forms the first ceiling 3b, and the mounting portion 60 of the holder 6 is fixed to the horizontal beam by driving screws 66 through the screw insertion holes 63 while the gypsum board that constitutes the rear end portion 5b is in contact with the side surface of the reinforcing material 50. The base end fixing portion 70 of the lighting base plate 7 is bolted to the arm portion 61 of the holder 6. The base end fixing portion 70, groove forming portion 71, and tip inclined portion 72 of the lighting base plate 7 have the same configuration as in the first embodiment, so their description is omitted. Also, the light source 8 installed in the groove portion 77 of the groove forming portion 71 has the same configuration as in the first embodiment, so their description is omitted.

[0049] Multiple ceiling panels 9 are attached to the underside of the lighting base plate 7 in a line A parallel to the rear end 5b, forming a second ceiling 10. The joints γ of the lighting base plates 7 and the joints ε of the ceiling panels 9 are offset from each other in a direction A parallel to the rear end 5b. A third ceiling is formed flush with the second ceiling 10, extending from the lower end of the rear end 5b in the opposite direction to the protruding arm portion 61. The third ceiling 11 is fixed to the furring strips 12, which are supported by suspension bolts hanging from the horizontal beam, and is formed horizontally flush with the second ceiling 10. In this way, the formation of the third ceiling 11 eliminates the need to align the position where the rear end 5b is provided with the exterior wall or partition wall, thereby increasing the degree of freedom in the position where the rear end 5b and the lighting base plate 7 are installed, and improving the design freedom of the position where the indirect lighting structure 1b is formed.

[0050] It goes without saying that the embodiments of the present invention are not limited to those described above, and can be modified as appropriate without departing from the scope of the spirit of the present invention.

[0051] This specification discloses the following technologies: [Note 1] The first ceiling and the preceding first ceiling A planar surface connected to the lower end The rear end is fixed to a support member fixed to the structural frame, and along the rear end Extending vertically A holder having a mounting portion and an arm portion that extends from the mounting portion in a direction that intersects the rear end at a distance from the first ceiling and below, a base end fixing portion fixed along the arm portion, and extending further from the base end fixing portion and on the upper surface of the rear end. Parallel and horizontally An indirect lighting structure comprising: a groove-forming portion in which a groove is formed; a tip inclined portion having a rising surface rising from the bottom surface of the groove and a downward sloping surface from the upper end of the rising surface toward the tip, wherein the lower surface serves as the base for a second ceiling lower than the first ceiling; and a light source arranged in the groove.

[0052] According to Appendix 1, the mounting portion of the holder is fixed to a support member fixed to the structural frame above the first ceiling, and the arm portion of the holder fixes the base end fixing portion of the lighting base plate. As a result, the lighting base plate is firmly fixed to the structural frame via the holder and support member, and the groove-forming portion and the tip-inclined portion can be further extended from the base end fixing portion, allowing the lighting base plate to be extended in a direction intersecting the rear end. Therefore, the rear end is positioned deep within the space formed between the first ceiling and the lighting base plate, making the rear end and light source less visible from the indoor space below the second ceiling, thus improving the aesthetic appeal. Furthermore, the tip-inclined portion of the lighting base plate hides the light source with its rising surface, and the inclined surface is formed with a downward slope towards the tip, making the tip thinner than the overall thickness of the lighting base material, thus creating a sharp impression. Furthermore, by providing a sloping tip section, the sloping tip section can be made lighter than the base fixing section, allowing the lighting base plate to be extended in a direction that intersects the rear end.

[0053] [Note 2] In the indirect lighting structure of Appendix 1, a plurality of lighting base plates are provided, and the lighting base plates are arranged in a direction parallel to the rear end, and the second ceiling is formed by attaching a plurality of ceiling boards to the underside of the lighting base plates in a direction parallel to the rear end, and the joints between the lighting base plates and the joints between the ceiling boards are arranged to be offset from each other in a direction parallel to the rear end.

[0054] According to Appendix 2, the lighting base plates are arranged in a direction parallel to the rear end, and the ceiling plates are attached to the underside of the lighting base plates in a direction parallel to the rear end. Since the joints between the lighting base plates and the joints between the ceiling plates are offset from each other in a direction parallel to the rear end, the ceiling plates can prevent vertical displacement between the lighting base plates, thus preventing a decrease in the aesthetic appeal of the second ceiling.

[0055] [Note 3] In the indirect lighting structure described in Appendix 2, the lighting base plate has a vertical through hole and is fixed to the arm by a base fixing bolt inserted into the through hole from below, and the lower end of the through hole is enlarged to form a deep counterbore hole into which the head of the base fixing bolt fits.

[0056] According to Appendix 3, a deep counterbore hole is formed at the lower end of the through-hole that vertically penetrates the lighting base plate. As a result, the heads of the base fixing bolts used to secure the lighting base plate to the arm do not protrude from the underside of the lighting base plate, allowing the ceiling plate to be precisely attached to the underside of the lighting base plate and resulting in a smooth finish for the second ceiling.

[0057] [Note 4] In the indirect lighting structure of Appendix 1, a third ceiling is further provided, extending from the lower end of the rear end, flush with the second ceiling and in the opposite direction to the protruding direction of the arm portion.

[0058] According to Appendix 4, the third ceiling further includes a third ceiling that extends from the lower end of the rear end, flush with the second ceiling and in the opposite direction to the protruding direction of the arm. This eliminates the need to align the position where the rear end is provided with the exterior wall or partition wall, thereby increasing the degree of freedom in the position where the rear end and the lighting base plate are installed, and improving the design freedom of the position where indirect lighting is formed.

[0059] [Note 5] In the indirect lighting structure described in Appendix 1, the light source is placed on the bottom surface of the groove so as to be movable in the width direction of the groove.

[0060] According to Appendix 5, since the light source is placed on the bottom surface of the groove and is movable in the width direction of the groove, the direction and illuminance of the light irradiated onto the first ceiling can be adjusted by adjusting the position of the light source, so it can be easily adjusted according to various factors such as the shape of the first ceiling and the user's preferences.

[0061] [Note 6] In the indirect lighting structure of Appendix 1, the height of the light source is equal to the height of the rising surface of the inclined tip portion.

[0062] According to Appendix 6, since the height of the light source is equal to the height of the rising surface of the sloping tip, the light source can be reliably hidden from heights lower than the lighting base plate, resulting in soft and ambient lighting.

[0063] [Note 7] In the indirect lighting structure described in Appendix 1, the light source has a first surface facing the inclined tip and a second surface facing the rear end, and the second surface emits light with a higher luminosity than the first surface.

[0064] According to Appendix 7, the second surface facing the rear end of the light source emits light with a higher luminous intensity than the first surface facing the inclined front end. This suppresses strong light from directly shining onto the first ceiling, resulting in softer, indirect lighting.

[0065] [Note 8] In the indirect lighting structure of Appendix 1, the first ceiling has a first inclined surface rising in a direction away from the rear end, a second inclined surface descending in a direction away from the first inclined surface, and a connecting surface connecting the first inclined surface and the second inclined surface, wherein the connecting surface is a curved surface that smoothly connects with the upper end of the first inclined surface and the upper end of the second inclined surface and bulges upward, and the curved surface is formed below the main beam.

[0066] According to Appendix 8, the first ceiling is a gable-shaped sloping ceiling, and the connecting surface between the first and second inclined surfaces is a smoothly connected curved surface. Since this curved surface is formed below the main beam, there is nothing to obstruct the light on the first ceiling, and no bends are formed on the first ceiling. As a result, the illuminance of the light shining on the first ceiling is smoothly continuous, allowing light from the light source to reach far distances, and enabling the entire indoor space below the first ceiling to be enveloped in soft light with minimal lighting.

[0067] [Note 9] In the indirect lighting structure of Appendix 8, the second inclined surface is formed such that the end on the side away from the connecting surface extends to a position lower than the lighting base plate.

[0068] According to Appendix 9, the second inclined surface is formed so that the end away from the connecting surface extends to a position lower than the lighting base plate, allowing the first ceiling to be extended further and enabling light from the light source to reach more smoothly over a greater distance. In addition, since the position of the second inclined surface furthest from the light source is formed lower than the lighting base plate, the direct visibility of the light source can be more effectively suppressed. [Industrial applicability]

[0069] The indirect lighting structure according to the present invention is suitable as an indirect lighting structure for illuminating the indoor space of habitable buildings such as houses. [Explanation of Symbols]

[0070] 1a,1b...Indirect lighting structure, 3a,3b...First ceiling, 5a,5b...Rear end, 6...Holder, 7...Lighting base plate, 8...Light source, 9...Ceiling plate, 10...Second ceiling, 11...Third ceiling, 30...First inclined surface, 31...Second inclined surface, 32...Connecting surface, 40...Rear beam, 47...Column (structural frame), 48...Girder beam (support member), 49...Horizontal beam (structural frame), 50...Horizontal reinforcement member (support member), 60...Mounting part, 61...Arm part, 64...Base fixing bolt, 68...Head, 70...Base fixing part, 71...Groove forming part, 72...Tip inclined part, 74...Deep counterbore hole, 75...Rising surface, 76...Inclined surface, 77...Groove part, 78...Bottom surface, 80...First surface, 81...Second surface.

Claims

1. The first ceiling and A planar rear end connected to the lower end of the first ceiling, A holder having a mounting portion fixed to a support member fixed to the structural frame and extending vertically along the rear end, and an arm portion protruding from the mounting portion in a direction that intersects the rear end downward at a distance from the first ceiling, A lighting base plate having a base fixing portion fixed along the arm portion, a groove forming portion extending further from the base fixing portion and having a groove formed on its upper surface parallel to the rear end and horizontally, and a tip inclined portion having a rising surface rising from the bottom surface of the groove and a downward sloping surface from the upper end of the rising surface toward the tip, the lower surface of which is lower than the first ceiling and serves as the base for a second ceiling, A light source is placed in the groove, An indirect lighting structure equipped with this feature.

2. Multiple lighting base plates are provided, and these lighting base plates are arranged in a direction parallel to the rear end. The second ceiling is formed by attaching a plurality of ceiling panels to the underside of the lighting base plate in a direction parallel to the rear end, The indirect lighting structure according to claim 1, wherein the joints between the lighting base plates and the joints between the ceiling plates are arranged to be offset from each other in a direction parallel to the rear end.

3. The aforementioned lighting base plate has vertical through holes and is fixed to the arm portion by base fixing bolts inserted into the through holes from below. The indirect lighting structure according to claim 2, wherein the lower end of the through hole is enlarged to form a deep counterbore hole into which the head of the base fixing bolt fits.

4. The indirect lighting structure according to claim 1, further comprising a third ceiling extending from the lower end of the rear end, flush with the second ceiling and in the opposite direction to the protruding direction of the arm.

5. The indirect lighting structure according to claim 1, wherein the light source is placed on the bottom surface of the groove so as to be movable in the width direction of the groove.

6. The indirect lighting structure according to claim 1, wherein the height of the light source is equal to the height of the rising surface of the tip inclined portion.

7. The light source has a first surface facing the inclined tip side and a second surface facing the rear end side. The indirect lighting structure according to claim 1, wherein the second surface emits light with a higher luminosity than the first surface.

8. The first ceiling has a first inclined surface rising in a direction away from the rear end, a second inclined surface descending in a direction away from the first inclined surface, and a connecting surface connecting the first inclined surface and the second inclined surface. The connecting surface is a curved surface that smoothly connects with the upper end of the first inclined surface and the upper end of the second inclined surface and bulges upward. The indirect lighting structure according to claim 1, wherein the connecting surface is formed below the main beam.

9. The indirect lighting structure according to claim 8, wherein the end of the second inclined surface that is away from the connecting surface extends to a position lower than the lighting base plate.

Images