Illumination device

Abstract

The present invention provides an illumination device in which it is possible to easily attach an illumination panel to a base member in a state where the base member is attached to a wall surface.　This illumination device comprises: an illumination panel having a panel body, a first panel-side engagement part, and a second panel-side engagement part; and a base member having a first base-side engagement part capable of engaging the first panel-side engagement part from the outside in a short-side direction and a second base-side engagement part capable of engaging the second panel-side engagement part from the outside in the short-side direction. The second panel-side engagement part is a leaf spring, and has a fixing section to be fixed to the rear surface of the panel body, a rising section rising from the fixing section, and a fold-back section folded back from an end of the rising section in the rising direction. The fold-back section is provided with a biasing portion that engages the second base-side engagement part and biases the second base-side engagement part toward the outside in the short-side direction.

Description

lighting equipment

[0001] The present invention relates to a lighting device that can be attached to a ceiling, wall, floor, structure, or other surface.

[0002] Conventionally, when attaching a lighting device to a wall, a base member is fixed to the wall and then a lighting panel is attached to the base member (see, for example, Patent Document 1). For example, in the lighting device of Patent Document 1, when attaching to a wall, a fixing member (base member) is fixed to the wall with a fixing screw, and the lighting panel is pressed into the fixing member fixed to the wall, thereby bending the back portion of the frame of the lighting panel, thereby attaching the lighting panel to the fixing member. This is said to make it possible to easily attach the lighting panel to the wall via the fixing member.

[0003] JP 2013-149534 A

[0004] However, in the lighting device of Patent Document 1, the lighting panel is attached to the fixing member by bending the rear portion of the frame, so the load caused by the bending of the rear portion of the frame is also applied to the lighting panel. Therefore, in the case of a lighting panel with low bending strength, there is a risk that the lighting panel may be damaged, and the lighting device of Patent Document 1 has room for further improvement.

[0005] SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a lighting device in which the lighting panel can be easily attached to the base member in a state in which the base member is attached to a wall surface.

[0006] One aspect of the present invention for solving the above-mentioned problems includes an illumination panel and a base member, the illumination panel having a panel main body, a first panel side engaging portion, and a second panel side engaging portion, the panel main body having a light emitting surface and a back surface and being an elongated body extending in a longitudinal direction, the first panel side engaging portion being on the back surface side and being provided on a first end side in a lateral direction of the panel main body, the second panel side engaging portion being on the back surface side and being provided on a second end side in the lateral direction of the panel main body, and the base member being configured to engage the first panel side engaging portion with the first panel side engaging portion. a first base-side engaging portion engageable with the panel-side engaging portion from the outside in the short side direction, and a second base-side engaging portion engageable with the second panel-side engaging portion from the outside in the short side direction, wherein the second panel-side engaging portion is a leaf spring and has a fixed portion fixed to the back surface of the panel main body, a rising portion rising from the fixed portion, and a folded portion folded back from the end of the rising portion in the rising direction, wherein the folded portion is equipped with a biasing portion that engages with the second base-side engaging portion and biases the second base-side engaging portion toward the outside in the short side direction.

[0007] According to this aspect, since the second panel-side engaging portion is a leaf spring, when attaching the lighting panel to the base member attached to the wall surface, the lighting panel can be easily attached to the base member by elastically deforming the second panel-side engaging portion. Furthermore, since the lighting panel can be attached to the base member by elastically deforming the second panel-side engaging portion, there is no need to bend the lighting panel when attaching it to the base member as in Patent Document 1, and the lighting panel is less likely to be subjected to load and break. According to this aspect, the biasing portion of the second panel-side engaging portion biases the second base-side engaging portion outward, making it less likely for the lighting panel to come off the base member.

[0008] In a preferred aspect, the lighting panel is non-destructively detachable from the base member, and when removing the lighting panel from the base member, the lighting panel is moved toward the second end in the short side direction to disengage the first panel side engagement portion from the first base side engagement portion.

[0009] According to this aspect, the lighting panel can be easily removed from the base member.

[0010] In a preferred aspect, the lighting panel has at least two second panel-side engaging portions, and the first panel-side engaging portion is located between the two second panel-side engaging portions in the longitudinal direction.

[0011] According to this aspect, the two second panel-side engaging portions are located outboard of the first panel-side engaging portions in the longitudinal direction, so that the lighting panel can be stably attached to the base member. According to this aspect, the first panel-side engaging portions are not provided at both longitudinal ends, so that the first panel-side engaging portions are less likely to interfere with the base member in the longitudinal direction when attaching the lighting panel to the base member.

[0012] In a preferred aspect, the first panel side engagement portion extends in the longitudinal direction, and the longitudinal length of the first panel side engagement portion is 50% or more and 90% or less of the longitudinal length of the panel main body portion.

[0013] According to this aspect, when the lighting panel is attached to the base member while the first panel side engaging portion and the first base side engaging portion are sufficiently engaged, the first panel side engaging portion is less likely to come into contact with the base member in the longitudinal direction.

[0014] In a preferred aspect, the first panel side engagement portion extends in the longitudinal direction, and the length of the lighting panel in the longitudinal direction from the end of the first panel side engagement portion to the end of the lighting panel is at least half the length of the panel main body in the short direction.

[0015] According to this aspect, when attaching the lighting panel to the base member, even if the lighting panel is slightly tilted in the plane direction of the light-emitting surface, the first panel side engaging portion can be engaged with the first base side engaging portion without being buffered by the base member.

[0016] In a preferred aspect, the rising angle of the rising portion from the fixed portion is more than 90 degrees and not more than 120 degrees.

[0017] According to this aspect, the horizontal component relative to the light-emitting surface of the lighting panel is larger than the vertical component, making it easier for the biasing portion to bias the second base-side engaging portion outward in the short-side direction.

[0018] In a preferred aspect, when viewed in plan, the lighting panel has a distance between a second end of the panel main body in the short side direction and the fixing portion that is ¼ or less of the length of the panel main body in the short side direction.

[0019] According to this aspect, a space for storing wiring and the like can be secured over most of the widthwise direction of the base member.

[0020] The above aspects may be made dependent on each other, or some of the configurations may be quoted or substituted for each other, as long as they are included in the technical scope of the present invention.

[0021] According to the present invention, the lighting panel can be easily attached to the base member in a state where the base member is attached to the wall surface.

[0022] 1 is a perspective view of a lighting device according to a first embodiment of the present invention mounted on a wall surface in a horizontal orientation.

[0034] FIG. 1 is an exploded perspective view of the lighting device of FIG. 1.

[0035] FIG. 2 is an exploded perspective view of the lighting device of FIG. 2, viewed from a different direction than FIG. 2.

[0036] FIG. 3 is a side view of the lighting panel of FIG. 2.

[0037] FIG. 4 is a perspective view of the second panel-side engaging portion of FIG. 4.

[0038] FIG. 5 is a rear view of the lighting panel of FIG. 2.

[0039] FIG. 6 is an explanatory diagram of the mounting operation when mounting the lighting device of FIG. 2 on a wall surface, showing a perspective view of mounting a base member on the wall surface using fastening elements.

[0039] FIG. 7 is an explanatory diagram of the mounting operation when mounting the lighting device on a wall surface, following FIG. 7, where (a) to (c) are cross-sectional views showing the progression of the operation when mounting the lighting panel on the base member.

[0039] FIG. 8 is an explanatory diagram of a mounting operation different from FIG. 8, showing (a) to (c) are cross-sectional views showing the progression of the operation when mounting the lighting panel on the base member.

[0039] FIG. 9 is a perspective view of the lighting device of FIG. 1 mounted on a wall surface in a vertical orientation.

[0039] FIG. 10 is an explanatory diagram of a lighting device according to another embodiment of the present invention, showing a perspective view of connecting adjacent lighting devices.

[0023] Hereinafter, an embodiment of the present invention will be described in detail. Note that, unless otherwise specified, the positional relationships of up, down, left, right, front, and back are based on the posture shown in Fig. 1. In other words, the state in which the lighting device 1 is attached to the wall surface 100 in a horizontal posture is based on the positional relationships.

[0024] A lighting device 1 according to a first embodiment of the present invention is mounted on a wall surface 100 of a structure such as a ceiling, wall, floor, or desk. As shown in Fig. 1 , the lighting device 1 of this embodiment is mounted in a horizontal position on a wall surface 100 of a vertical wall that stands upright in the vertical direction. As shown in Fig. 2 , the lighting device 1 has a lighting panel 2 and a base member 3, and the lighting panel 2 can be attached to and detached from the base member 3 attached to the wall surface 100 without destroying the lighting panel 2.

[0025] <Illumination Panel 2> As shown in Fig. 2, the illumination panel 2 is a surface light-emitting panel having a light-emitting area 22 that emits light in a surface manner on a light-emitting surface 20. As shown in Figs. 2 and 3, the illumination panel 2 includes a panel main body 10, a first panel-side engaging portion 11, second panel-side engaging portions 12a, 12b, a panel-side groove portion 13, first restricting portions 15a, 15b, and second restricting portions 16a, 16b.

[0026] 2 and 3 , the panel main body 10 has a light-emitting surface 20 and a back surface 21 as its main surfaces, and is a rectangular plate-like panel when the light-emitting surface 20 is viewed from the front. The panel main body 10 of this embodiment is an elongated body extending in the horizontal direction X, and is a horizontally elongated rectangular panel whose length in the horizontal direction X is longer than its length in the vertical direction Y. The panel main body 10 has a light-emitting region 22 in the center of the light-emitting surface 20, as shown in FIG.

[0027] The light-emitting area 22 is an area that emits light in a planar manner when lit, and is a rectangular area when viewed from the front. The light-emitting area 22 in this embodiment is horizontally rectangular when viewed from the front, similar to the outer shape of the panel main body 10, and as shown in FIG. 1 , light-emitting panels 23 are arranged side by side in the longitudinal direction (horizontal direction X) corresponding to the light-emitting area 22. The light-emitting panels 23 may be arranged with a gap between them or without any gaps. The light-emitting panels 23 are specifically organic EL panels, and when lit, they are connected to other light-emitting panels 23 to form a single light-emitting area 22.

[0028] As shown in Figure 3, the panel main body 10 has a flat, smooth back surface 21 made of a plate-like body 25. The plate-like body 25 is preferably made of a metal such as stainless steel or an alloy. The term "most part" here refers to a portion exceeding 50% of the entire surface. The same applies hereinafter.

[0029] (First Panel Engagement Portion 11) As shown in FIG. 3 , the first panel engagement portion 11 is provided on the rear surface 21 of the panel main body 10, on the first end 26 side (lower end side) in the short-side direction (longitudinal direction Y). In this embodiment, the first panel engagement portion 11 is provided near the first end 26 in the short-side direction (longitudinal direction Y). The first panel engagement portion 11 extends in the longitudinal direction (lateral direction X) and rises from the rear surface 21 of the panel main body 10 in the thickness direction (direction perpendicular to the front-rear direction Z, the lateral direction X, and also perpendicular to the longitudinal direction Y) with a certain width. As shown in FIG. 6 , the first panel engagement portion 11 is provided in the center portion in the long-side direction (lateral direction X) and does not extend to either end of the long-side direction. That is, the length L1 of the first panel engagement portion 11 in the long-side direction (lateral direction X) is shorter than the length L2 of the panel main body 10 in the long-side direction (lateral direction X). The length L1 of the first panel side engaging portion 11 in the longitudinal direction shown in FIG. 6 is preferably 50% to 90% of the length L2 of the panel main body 10 in the longitudinal direction.

[0030] It is preferable that the length L3 of the lighting panel 2 in the longitudinal direction (horizontal direction X) from the end of the first panel side engagement portion 11 shown in Figure 6 to the end of the lighting panel 2 is at least half the length W2 of the panel main body portion 10 in the short direction (vertical direction Y) shown in Figure 4.

[0031] 3, the first panel side engaging portion 11 of this embodiment is a cut-and-raised piece formed by cutting and raising a part of the plate-like body 25 that constitutes the back surface 21 of the panel main body 10, and is continuous with the plate-like body 25 that constitutes the back surface 21 of the panel main body 10. In other words, the tip end of the first panel side engaging portion 11 in the rising direction (the end on the side away from the panel main body 10) is a free end, and the first panel side engaging portion 11 is supported in a cantilevered manner by the panel main body 10.

[0032] 4, the first panel-side engaging portion 11 includes, in order from the panel main body 10 side, a first extension portion 30 and a second extension portion 31. The first extension portion 30 is an inclined wall portion that is inclined from the rear surface 21 of the panel main body 10 toward the rear side in the front-rear direction Z and toward the outside in the vertical direction Y (toward the first end 26). The second extension portion 31 is a bent portion that is bent in a mountain shape from the tip end of the first extension portion 30 in the extension direction toward the rear side in the front-rear direction Z and toward the inside in the vertical direction Y (toward the second end 27).

[0033] (Second Panel Side Engagement Portions 12a, 12b) As shown in Fig. 3, the second panel side engagement portions 12a, 12b are provided on the rear surface 21 of the panel main body 10, on the second end 27 side (upper end side) in the short side direction (longitudinal direction Y). As shown in Fig. 3, the second panel side engagement portions 12a, 12b are provided near both ends in the long side direction (lateral direction X), and are provided near the end (second end 27) opposite the first panel side engagement portion 11 in the short side direction (longitudinal direction Y). As shown in Fig. 5, the second panel side engagement portions 12a, 12b are leaf springs, and include a fixed portion 40, a rising portion 41, and a folded-back portion 42.

[0034] The fixing portion 40 has a planar shape and is fixed to the rear surface 21 of the panel main body 10 in surface contact therewith.

[0035] The rising portion 41 is a portion that rises at an angle from the upper end (the end on the second end 27 side) of the fixing portion 40. The rising angle θ1 of the rising portion 41 from the fixing portion 40 shown in Fig. 4 (the angle formed by the center line C1 of the fixing portion 40 and the center line C2 of the rising portion 41) is an obtuse angle, and is preferably more than 90 degrees and not more than 120 degrees.

[0036] 4 and 5 , the folded portion 42 is composed of a folded main body portion 45 and a biasing portion 46. The folded main body portion 45 is a portion bent from the end of the rising portion 41 in the rising direction toward the outside in the vertical direction Y (toward the second end 27). The bending angle θ2 of the folded main body portion 45 from the rising portion 41 shown in FIG. 4 (the angle formed by the center line C2 of the rising portion 41 and the center line C3 of the folded main body portion 45), i.e., the angle θ2 of the connection portion 44 between the rising portion 41 and the folded main body portion 45, is an acute angle, and is preferably between 30 degrees and 60 degrees.

[0037] The biasing portion 46 is a portion that constantly biases a portion of the base member 3 when the lighting panel 2 is attached to the base member 3. As shown in FIG. 4 , the biasing portion 46 has a first bent portion 47 and a second bent portion 48, and an engagement recess 49 is formed by the first bent portion 47 and the second bent portion 48. The first bent portion 47 is a portion bent from the tip of the folded main body portion 45 toward the inside in the vertical direction Y (toward the first end 26). The second bent portion 48 is a portion bent from the tip of the first bent portion 47 toward the outside in the vertical direction Y (toward the second end 27). The engagement recess 49 is formed by the first bent portion 47 and the second bent portion 48 and is a recess that is deeper toward the inside in the vertical direction Y (toward the first end 26).

[0038] (Panel side groove portion 13) As shown in Figure 3, the panel side groove portion 13 is provided corresponding to the first panel side engagement portion 11, and is a bottomed groove that extends in the longitudinal direction (lateral direction X) of the panel main body portion 10 and has a depth in the thickness direction (front-to-back direction Z).

[0039] (First regulating portions 15a, 15b) As shown in Figure 3, the first regulating portions 15a, 15b are portions that engage with the second panel side engaging portions 12a, 12b from the inside in the lateral direction X and regulate the inward movement of the second panel side engaging portions 12a, 12b in the longitudinal direction (lateral direction X), and are raised portions that protrude from the back surface 21 of the panel main body portion 10.

[0040] (Second regulating portions 16a, 16b) The second regulating portions 16a, 16b engage with the second panel side engaging portions 12a, 12b from the inside in the vertical direction Y toward the end side, and regulate the inward movement of the second panel side engaging portions 12a, 12b in the short direction (vertical direction Y), and are raised portions that protrude from the back surface 21 of the panel main body portion 10.

[0041] <Base member 3> As shown in Fig. 1, the base member 3 is a holding member that is fixed to the wall surface 100 and holds the lighting panel 2. As shown in Figs. 2 and 3, the base member 3 includes a housing portion 50, a first base-side engaging portion 51, a second base-side engaging portion 52, fixing mounting holes 53a and 53b, and spacing maintaining portions 54a to 54f.

[0042] (Housing 50) As shown in FIG. 2 , the housing 50 has a fixed side wall 60 and peripheral walls 61 to 64, and an enclosed space 65 surrounded by the walls 60 to 64. The fixed side wall 60 is a rectangular wall when viewed from the front. The peripheral walls 61 to 64 are walls that rise from each side of the fixed side wall 60 toward the front in the front-to-rear direction Z. The peripheral walls 61 and 62 are horizontal walls that extend in the horizontal direction X along the horizontal sides of the fixed side wall 60 when viewed from the front, and face each other in the vertical direction Y with the enclosed space 65 between them. The peripheral walls 63 and 64 are vertical walls that extend in the vertical direction Y along the vertical sides of the fixed side wall 60 when viewed from the front, and face each other in the horizontal direction X with the enclosed space 65 between them. The enclosed space 65 is a housing space for housing electronic devices such as a DC stabilizing circuit, power supply wiring, etc. (hereinafter, also simply referred to as devices, etc.), not shown.

[0043] (First base-side engaging portion 51) As shown in Fig. 2, the first base-side engaging portion 51 is a bent portion that bends upward (inward) from the front end of the wall portion 61, and is engageable with the first panel-side engaging portion 11. The first base-side engaging portion 51 extends in a direction perpendicular to the peripheral wall portion 61, and its tip in the extending direction is located more inward than the peripheral wall portion 61. As shown in Fig. 2, the first base-side engaging portion 51 is provided over most of the lateral direction X, and it is preferable that it be provided over the entire lateral direction X.

[0044] (Second Base-Side Engagement Portion 52) As shown in FIG. 2 , the second base-side engagement portion 52 is a bent portion that bends downward (inward) from the front end of the peripheral wall portion 62. Specifically, it is a folded portion that is folded back from the front end of the peripheral wall portion 62 and inclined toward the enclosed space 65. The second base-side engagement portion 52 is engageable with the second panel-side engagement portions 12a, 12b. The second base-side engagement portion 52 extends in a direction intersecting the peripheral wall portion 62, and its tip in the extension direction is located more inward than the peripheral wall portion 62. In other words, the second base-side engagement portion 52 extends with a directional component that approaches the first base-side engagement portion 51. As shown in FIG. 2 , the second base-side engagement portion 52 is provided over most of the lateral direction X, and preferably over the entire lateral direction X.

[0045] (Fixing Mounting Holes 53a, 53b) The fixing mounting holes 53a, 53b are mounting holes for inserting the shafts of the fastening elements 102 to attach the base member 3 to the wall surface 100, as shown in Fig. 7, and are through-holes that penetrate the fixed side wall portion 60 in the thickness direction (front-rear direction Z). The fixing mounting hole 53a is provided on one end side in the lateral direction X, and the fixing mounting hole 53b is provided on the other end side in the lateral direction X.

[0046] (Spacing maintaining portions 54a to 54f) The spacing maintaining portions 54a to 54f are portions that maintain the spacing between the fixed side wall portion 60 and the wall surface 100 when the base member 3 is installed on the wall surface 100, and are raised portions that protrude from the fixed side wall portion 60 toward the rear (wall surface 100 side).

[0047] Next, a mounting operation for mounting the lighting device 1 of this embodiment on the wall surface 100 will be described.

[0048] 7, the base member 3 is fixed to the wall surface 100 by the fastening elements 102. Specifically, the shafts of the fastening elements 102 are inserted into the fixing mounting holes 53a and 53b to fix the base member 3 to the wall surface 100.

[0049] At this time, the base member 3 is arranged in a horizontal position, as shown in Figure 7, with the second base side engagement portion 52 installed above the first base side engagement portion 51 and with the short side direction facing the up and down direction (vertical direction Y).

[0050] Next, as shown in FIG. 8( a), the lighting panel 2 is tilted relative to the base member 3 fixed to the wall surface 100, and the biasing portions 46 of the second panel side engaging portions 12 a, 12 b are pressed against the second base side engaging portions 52 to elastically deform the biasing portions 46 of the second panel side engaging portions 12 a, 12 b, and the lighting panel 2 is rotated around the rotation axis at the portion of the biasing portion 46 of the second base side engaging portion 52 pressing against the second base side engaging portion 52, as shown by the arrow in FIG. 8( a).

[0051] Specifically, as shown in Figure 8 (a), by pressing the first bent portion 47 or the second bent portion 48 of the urging portion 46 against the second base side engagement portion 52 against the urging force of the urging portion 46, the folded portion 42 is rotated toward the rising portion 41 around the connection portion 44 with the rising portion 41, and brought closer to the rising portion 41.

[0052] 8(b), when the light-emitting surface 20 of the lighting panel 2 becomes parallel to the fixed side wall portion 60 and parallel to the wall surface 100, the pressure of the biasing portions 46 of the second panel-side engaging portions 12a, 12b against the second base-side engaging portions 52 is released, and the lighting panel 2 is slid downward to engage the first panel-side engaging portions 11 with the first base-side engaging portions 51. In this way, the lighting panel 2 is attached to the base member 3, and the lighting device 1 is attached to the wall surface 100, as shown in FIG.

[0053] 8(b), in a state in which the biasing portions 46 of the second panel-side engaging portions 12a, 12b press the second base-side engaging portions 52 and the light-emitting surface 20 of the lighting panel 2 is parallel to the fixed side wall portion 60, the deformation of the second panel-side engaging portions 12a, 12b causes the first end portion 26 of the lighting panel 2 to be higher than the peripheral wall portion 61 that constitutes the lower end surface of the base member 3, and the bottom portion of the first panel-side engaging portion 11 to be higher than the first base-side engaging portion 51. Then, by releasing the pressure of the biasing portions 46 of the second panel-side engaging portions 12a, 12b on the second base-side engaging portions 52, the elastic restoring force of the biasing portions 46 moves the rising portion 41 downward, and the lighting panel 2 moves downward, causing the first extension portion 30 of the first panel-side engaging portion 11 to abut against the end portion of the first base-side engaging portion 51. Therefore, the first panel side engaging portion 11 is firmly engaged with the first base side engaging portion 51 .

[0054] Next, a description will be given of a removal operation when removing the illumination panel 2 of this embodiment from the base member 3.

[0055] First, as shown in FIGS. 9A and 9B, the lighting panel 2 is lifted upward (toward the second end 27) and the second base-side engaging portion 52 presses the engaging recess 49 of the biasing portion 46.

[0056] At this time, the second base-side engaging portion 52 presses the engaging recess 49 of the biasing portion 46 against the biasing force, causing the folded main body portion 45 to further elastically deform and rotate toward the rising portion 41 around the connection portion 44 with the rising portion 41, thereby approaching the rising portion 41. Furthermore, as the lighting panel 2 moves toward the second end 27 (upward) in the vertical direction Y, the engagement between the first panel-side engaging portion 11 and the first base-side engaging portion 51 is released, and the connection portion between the first extension portion 30 and the second extension portion 31 is positioned above the first base-side engaging portion 51.

[0057] Next, as shown in Figure 9 (c), the lighting panel 2 is rotated around the engagement portion between the second base side engagement portion 52 and the engagement recess 49, and at least the first extension portion 30 of the first panel side engagement portion 11 is brought outside the enclosed space 65, and the lighting panel 2 is moved downward to remove the lighting panel 2.

[0058] At this time, the engagement between the second base side engagement portion 52 and the engagement recess 49 is released, and the lighting panel 2 is moved downward so that the connection portion between the folded main body portion 45 and the spring portion 46 is positioned lower than the tip of the second base side engagement portion 52 (toward the first end portion 26 in the vertical direction Y), and then moved forward in the fore-and-aft direction Z to remove it.

[0059] Furthermore, the lighting device 1 of this embodiment can also be mounted in the following manner, which is different from the mounting operation described above.

[0060] Specifically, first, the base member 3 is fixed to the wall surface 100 by the fastening elements 102 in the same manner as in the above-described mounting operation.

[0061] Next, as shown in Fig. 10(a), the lighting panel 2 is tilted relative to the base member 3 fixed to the wall surface 100, and as shown in Fig. 10(b), the first extension portion 30 of the first panel-side engagement portion 11 is hooked onto the first base-side engagement portion 51 of the base member 3, and the lighting panel 2 is rotated around the hooked portion as an axis. In this way, the lighting panel 2 is attached to the base member 3, and the lighting device 1 is attached to the wall surface 100, as shown in Fig. 10(c).

[0062] 10(b), the folded main body 45 is pressed by the second base-side engaging portion 52, causing the folded main body 45 to elastically deform and rotate toward the rising portion 41 around the connection portion 44 with the rising portion 41, thereby approaching the rising portion 41. When the second base-side engaging portion 52 moves past the folded main body 45 and approaches the panel main body 10, the second base-side engaging portion 52 is guided along the first bent portion 47 by the elastic restoring force of the folded main body 45 and fits into an engaging recess 49 formed by the first bent portion 47 and the second bent portion 48, as shown in FIG.

[0063] According to the lighting device 1 of the present embodiment, the second panel-side engaging portions 12a, 12b are formed of leaf springs, and therefore the second base-side engaging portions 52 press the second panel-side engaging portions 12a, 12b, causing them to elastically deform against the biasing forces of the biasing portions 46 of the second panel-side engaging portions 12a, 12b, thereby making it possible to easily attach the lighting panel 2 to the base member 3 in a state in which the base member 3 is attached to the wall surface 100. Furthermore, because the lighting panel 2 can be attached to the base member 3 by elastically deforming the second panel-side engaging portions 12a, 12b, there is no need to bend the lighting panel 2 when attaching it to the base member 3, and the lighting panel 2 is less likely to be subjected to loads or break. According to the lighting device 1 of this embodiment, the biasing portions 46 of the folded portions 42 of the second panel-side engaging portions 12a, 12b engage with the second base-side engaging portions 52 and constantly bias the second base-side engaging portions 52 outward in the short-side direction (vertical direction Y), making it difficult for the lighting panel 2 to come off the base member 3. Furthermore, according to the lighting device 1 of this embodiment, when the lighting panel 2 is attached to the base member 3, the first base-side engaging portions 51 of the base member 3 support the gravitational load of the lighting panel 2, preventing the lighting panel 2 from falling.

[0064] According to the lighting device 1 of the present embodiment, when removing the lighting panel 2 from the base member 3, by moving the lighting panel 2 toward the second end 27 in the short side direction (longitudinal direction Y), the second panel-side engaging portions 12 a, 12 b are compressed by the second base-side engaging portion 52, the first panel-side engaging portion 11 and the first base-side engaging portion 51 move apart in the short side direction, and the engagement between the first panel-side engaging portion 11 and the first base-side engaging portion 51 is released. This makes it easy to remove the lighting panel 2 from the base member 3. In particular, according to the lighting device 1 of the present embodiment, when removing the lighting panel 2 from the base member 3, the lighting panel 2 is moved upward, which is the direction opposite to the direction in which the gravitational load of the lighting panel 2 is applied. This means that the user supports the gravitational load of the lighting panel 2, preventing the first panel-side engaging portion 11 and the first base-side engaging portion 51 from unexpectedly releasing the engagement, and preventing the lighting panel 2 from falling.

[0065] According to the lighting device 1 of this embodiment, the first panel-side engaging portion 11 of the lighting panel 2 is located between the two second panel-side engaging portions 12a, 12b in the longitudinal direction. That is, the two second panel-side engaging portions 12a, 12b are located outward in the longitudinal direction (lateral direction X) from the first panel-side engaging portions 11, so that the lighting panel 2 is supported at at least three points relative to the base member 3, and the lighting panel 2 can be stably attached to the base member 3. According to the lighting device 1 of this embodiment, the first panel-side engaging portions 11 are not provided at both ends in the longitudinal direction, so that the first panel-side engaging portions 11 are less likely to come into contact with the peripheral wall portions 63, 64 of the base member 3 in the longitudinal direction when the lighting panel 2 is attached to the base member 3.

[0066] According to the lighting device 1 of this embodiment, the longitudinal length L1 of the first panel-side engaging portion 11 is 50% to 90% of the longitudinal length L2 of the panel main body 10. Therefore, when the lighting panel 2 is attached to the base member 3 while the first panel-side engaging portion 11 and the first base-side engaging portion 51 are sufficiently engaged with each other, the first panel-side engaging portion 11 is less likely to come into contact with the peripheral wall portions 63, 64 of the base member 3 in the longitudinal direction.

[0067] According to the lighting device 1 of this embodiment, the length L3 of the lighting panel 2 in the longitudinal direction, from the end of the first panel-side engaging portion 11 to the end of the lighting panel 2, is equal to or greater than half the length W2 in the lateral direction of the panel main body 10. Therefore, when attaching the lighting panel 2 to the base member 3, even if the lighting panel 2 is slightly tilted in the planar direction of the light-emitting surface 20 (the direction in which the light-emitting surface 20 extends), the first panel-side engaging portion 11 can be engaged with the first base-side engaging portion 51 without being interrupted by the peripheral wall portions 63, 64 of the base member 3.

[0068] In the lighting device 1 of the present embodiment, the rising angle θ1 of the rising portion 41 from the fixing portion 40 is greater than 90 degrees and is equal to or less than 120 degrees. Therefore, the horizontal component relative to the light-emitting surface 20 of the lighting panel 2 is greater than the vertical component, and the biasing portion 46 can easily bias the second base-side engaging portion 52 outward in the short side direction.

[0069] According to the lighting device 1 of this embodiment, in a plan view of the lighting panel 2, the distance W1 between the second end 27 (upper end) in the short-side direction of the panel main body 10 and the fixing portion 40 is equal to or less than ¼ of the short-side length W2 of the panel main body 10. In other words, the range of motion of the second panel-side engaging portions 12a, 12b is limited to ¼ or less of the short-side length of the panel main body 10, so that space for accommodating devices and the like can be secured in most of the short-side direction of the enclosed space 65 of the base member 3.

[0070] The lighting device 1 of this embodiment can be attached to the wall surface 100 in a horizontal orientation (an orientation in which the longitudinal direction is the horizontal direction X) as shown in Fig. 1 , or in a vertical orientation (an orientation in which the longitudinal direction is the vertical direction Y) as shown in Fig. 11 . When the lighting device 1 of this embodiment is attached in a vertical orientation as shown in Fig. 11 , the second panel side engaging portion 12b (12a) located on the lower side is placed on the peripheral wall portion 64 (63), which is the lower wall portion, and supports the weight of the lighting panel 2. The second panel side engaging portion 12b (12a) is restricted from moving downward by the first restricting portion 15b (15a), and is sandwiched between the first restricting portion 15b (15a) and the peripheral wall portion 64 (63) to prevent movement in the vertical direction Y (up and down).

[0071] In the above-described embodiment, the lighting panel 2 includes one first-panel-side engaging portion 11, but the present invention is not limited to this. The lighting panel 2 may include two or more first-panel-side engaging portions 11. Similarly, the lighting panel 2 includes two second-panel-side engaging portions 12a, 12b, but the present invention is not limited to this. The lighting panel 2 may include one second-panel-side engaging portion, or may include three or more second-panel-side engaging portions.

[0072] In the above embodiment, the base member 3 includes one first base-side engaging portion 51, but the present invention is not limited to this. The base member 3 may include two or more first base-side engaging portions 51. Similarly, the base member 3 includes one second base-side engaging portion 52, but the present invention is not limited to this. The base member 3 may include two or more second base-side engaging portions 52.

[0073] In the above embodiment, the base member 3 has two fixing mounting holes 53a, 53b and is fixed to the wall surface 100 by two fastening elements 102, but the present invention is not limited to this. The base member 3 may have one fixing mounting hole and be fixed to the wall surface 100 by the corresponding fastening element 102, or may have three or more fixing mounting holes and be fixed to the wall surface 100 by the corresponding fastening elements 102.

[0074] In the above embodiment, the lighting panel 2 has one light-emitting region 22 on the light-emitting surface 20, but the present invention is not limited to this. The lighting panel 2 may have multiple light-emitting regions 22 on the light-emitting surface 20.

[0075] In the above embodiment, the wall surface 100 constitutes a wall, but the present invention is not limited to this. The wall surface 100 may also constitute a structure such as a ceiling, a floor, or a desk.

[0076] In the above-described embodiment, the lighting device 1 is attached to the wall surface 100 by the fastening element 102, but the present invention is not limited to this. The lighting device 1 may be attached to the wall surface 100 by another method.

[0077] In the above-described embodiment, an organic EL panel is used as the light-emitting panel 23, but the present invention is not limited to this. Other types of surface light-emitting panels may be used as the light-emitting panel 23. For example, a surface light-emitting panel in which LEDs are arranged in a planar manner may be used as the light-emitting panel 23.

[0078] In the above-described embodiment, one lighting device 1 is installed on the wall surface 100, but the present invention is not limited to this. The lighting device 1 may be installed on the wall surface 100 together with other lighting devices 1. In this case, adjacent lighting devices 1A and 1B may be connected to each other by a connecting member 80 as shown in FIG. 12 . For example, when connecting the lighting devices 1A and 1B using a connecting member 80 having a main body plate portion 83 and a plurality of protrusions 82 as shown in FIG. 12 , recesses 81A and 81B that can fit into the protrusions 82 of the connecting member 80 are provided on the fixed side walls 60A and 60B of the lighting devices 1A and 1B, respectively, and the main body plate portion 83 of the connecting member 80 is positioned so as to straddle the fixed side walls 60A and 60B of the lighting devices 1A and 1B, and the protrusions 82 of the connecting member 80 are inserted into the recesses 81A and 81B of the lighting devices 1A and 1B, respectively, to connect the lighting devices.

[0079] In the above-described embodiments, each component can be freely substituted or added between the respective embodiments as long as it falls within the technical scope of the present invention.

[0080] REFERENCE SIGNS LIST 1 lighting device 2 lighting panel 3 base member 10 panel main body 11 first panel side engaging portion 12a, 12b second panel side engaging portion 20 light emitting surface 21 back surface 26 first end portion 27 second end portion 40 fixing portion 41 rising portion 42 folded portion 46 biasing portion 51 first base side engaging portion 52 second base side engaging portion 100 wall surface

Claims

1. A lighting panel and a base member, wherein the lighting panel has a panel main body, a first panel-side engaging portion, and a second panel-side engaging portion, the panel main body having a light-emitting surface and a back surface and being an elongated body extending in the longitudinal direction, the first panel-side engaging portion being on the back surface side and being provided on the first end side in the short direction of the panel main body, the second panel-side engaging portion being on the back surface side and being provided on the second end side in the short direction of the panel main body, the base member having a first base-side engaging portion engageable with the first panel-side engaging portion from the outside in the short direction and a second base-side engaging portion engageable with the second panel-side engaging portion from the outside in the short direction, the second panel-side engaging portion being a leaf spring and having a fixing portion fixed to the back surface of the panel main body, a rising portion rising from the fixing portion, and a folded portion folded back from the end of the rising portion in the rising direction, The folding portion includes a biasing portion that engages with the second base-side engaging portion and biases the second base-side engaging portion outward in a short-side direction.

2. The lighting device described in claim 1, wherein the lighting panel is non-destructively detachable from the base member, and when removing the lighting panel from the base member, the lighting panel is moved toward the second end in the short side direction to release the engagement between the first panel side engagement portion and the first base side engagement portion.

3. A lighting device as described in claim 1 or 2, wherein the lighting panel has at least two second panel side engagement portions, and the first panel side engagement portion is located between the two second panel side engagement portions in the longitudinal direction.

4. A lighting device as described in claim 3, wherein the first panel side engagement portion extends in the longitudinal direction, and the longitudinal length of the first panel side engagement portion is 50% or more and 90% or less of the longitudinal length of the panel main body portion.

5. The lighting device described in claim 3, wherein the first panel side engagement portion extends in the longitudinal direction, and the length of the lighting panel in the longitudinal direction from the end of the first panel side engagement portion to the end of the lighting panel is at least half the length of the panel main body in the short direction.

6. The lighting device according to claim 1 or 2, wherein the rising angle of the rising portion from the fixed portion is more than 90 degrees and not more than 120 degrees.

7. A lighting device as described in claim 1 or 2, wherein when viewed in a plane, the distance between the second end of the panel main body in the short direction and the fixing portion is less than 1 / 4 of the short-side length of the panel main body.

Images