Luminaire

Abstract

To provide a luminaire in which an illumination panel can be easily mounted on a base member, in a state where the base member is mounted with respect to a wall surface.SOLUTION: A luminaire includes: an illumination panel having a panel body part, a first panel side engagement part, and a second panel side engagement part; and a base member which includes a first base side engagement part which can be engaged with the first panel side engagement part from the outside in a shorter direction, and a second base side engagement part which can be engaged with the second panel side engagement part from the outside in the shorter direction. The second panel side engagement part includes: a fixing part which is a plate spring and is fixed to a rear surface of the panel body part; a rising part rising from the fixing part; and a folding-back part folded back from an end part in a rising direction of the rising part. The folding-back part includes an energization part engaged with the second base side engagement part and for energizing the second base side engagement part toward the outside in the shorter direction.SELECTED DRAWING: Figure 8

Description

[Technical Field]

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

[0002] BACKGROUND ART Conventionally, when attaching a lighting device to a wall surface, there are cases where a base member is fixed to the wall surface and then a lighting panel is attached to the base member (for example, Patent Document 1). For example, when the lighting device of Patent Document 1 is attached to a wall, a fixing member (base member) is fixed to the wall with a fixing screw, and the lighting panel is pressed against the fixing member fixed to the wall, thereby bending the back part of the frame of the lighting panel and attaching the lighting panel to the fixing member. This is said to make it possible to easily attach the lighting panel to a wall via the fixing member. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2013-149534 Summary of the Invention [Problem to be solved by the invention]

[0004] However, in the lighting device of Patent Document 1, the rear part of the frame is bent to attach the lighting panel to the fixing member, so the load caused by the bending of the rear part of the frame is also applied to the lighting panel. Therefore, if the lighting panel has low bending strength, there is a risk that the lighting panel will 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 an illumination panel can be easily attached to a base member in a state in which the base member is attached to a wall surface. [Means for solving the problem]

[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, because the second panel-side engaging portion is a leaf spring, when attaching the lighting panel to the base member that is 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. Also, because 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, so that the illumination panel is less likely to come off from 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 positioned further outward in the longitudinal direction than the first panel side engaging portions, so that the lighting panel can be stably attached to the base member. According to this aspect, since the first panel side engaging portions are not provided at both ends in the longitudinal direction, the first panel side engaging portions are less likely to come into contact with the base member in the longitudinal direction when the lighting panel is attached to the base member.

[0012] In a preferred aspect, the first panel side engaging portion extends in the longitudinal direction, and the longitudinal length of the first panel side engaging portion is 50% to 90% 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 interfere 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 illumination 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. [Effects of the 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. [Brief explanation of the drawings]

[0022] [Figure 1] 1 is a perspective view of a lighting device according to a first embodiment of the present invention attached to a wall surface in a horizontal position. [Figure 2] FIG. 2 is an exploded perspective view of the lighting device of FIG. [Figure 3] 3 is an exploded perspective view of the lighting device of FIG. 2, seen from a direction different from that of FIG. 2. FIG. [Figure 4]FIG. 3 is a side view of the lighting panel of FIG. 2. [Figure 5] FIG. 5 is a perspective view of the second panel side engaging portion of FIG. 4. [Figure 6] FIG. 3 is a rear view of the lighting panel of FIG. 2. [Figure 7] 3 is an explanatory diagram of the mounting operation when the lighting device of FIG. 2 is mounted on a wall surface, and is a perspective view when the base member is mounted on the wall surface by fastening elements. FIG. [Figure 8] 8A to 8C are explanatory diagrams of the mounting operation when mounting the lighting device on a wall surface, following FIG. 7, and are cross-sectional views showing the progress of the operation when mounting the lighting panel on the base member. [Figure 9] 1. FIG. 4 is an explanatory diagram of a removal operation when removing the lighting device of FIG. 1 from a wall surface, with (a) to (c) being cross-sectional views showing the progress of the operation when removing the lighting panel from the base member. [Figure 10] 9A to 9C are explanatory views of an attachment operation different from that of FIG. 8, and are cross-sectional views showing the progress of the operation when attaching the illumination panel to the base member. [Figure 11] 2 is a perspective view of the lighting device of FIG. 1 attached to a wall surface in a vertical position. FIG. [Figure 12] FIG. 10 is an explanatory diagram of a lighting device according to another embodiment of the present invention, showing a perspective view when adjacent lighting devices are connected to each other. DETAILED DESCRIPTION OF THE INVENTION

[0023] Hereinafter, an embodiment of the present invention will be described in detail. 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 horizontally to the wall surface 100 is based on the position.

[0024] The lighting device 1 according to the first embodiment of the present invention is attached to a wall surface 100 of a structure such as a ceiling, a wall, a floor, or a desk. As shown in FIG. 1, the lighting device 1 of this embodiment is attached in a horizontal position to 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 a wall surface 100 in a non-destructive manner.

[0025] <Lighting panel 2> As shown in FIG. 2, the lighting panel 2 is a surface light-emitting panel having a light-emitting area 22 that emits light in a planar manner on a light-emitting surface 20. As shown in Figures 2 and 3, the lighting panel 2 includes a panel main body 10, a first panel side engagement portion 11, second panel side engagement portions 12a, 12b, a panel side groove portion 13, first regulating portions 15a, 15b, and second regulating portions 16a, 16b.

[0026] (Panel main body 10) As shown in FIGS. 2 and 3, the panel body 10 has a light emitting surface 20 and a back surface 21 as 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 body 10 has a light emitting area 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 quadrangular area when viewed from the front. 1, light-emitting areas 22 are arranged side by side in the longitudinal direction (horizontal direction X) corresponding to light-emitting areas 22. Light-emitting panels 23 may be arranged with a gap between them or without any gaps. The light-emitting panel 23 is specifically an organic EL panel, and when lit, is connected to other light-emitting panels 23 to form one light-emitting area 22.

[0028] As shown in FIG. 3, most of the rear surface 21 of the panel main body 10 is made up of a plate-like body 25, and is smooth. The plate-like body 25 is preferably made of a metal such as stainless steel or an alloy. The term "majority" here means more than 50% of the total, and the same applies hereinafter.

[0029] (First panel side engagement portion 11) As shown in FIG. 3, the first panel side engaging portion 11 is provided on the rear surface 21 side of the panel main body 10, on the first end 26 side (lower end side) in the short side direction (longitudinal direction Y). The first panel side engaging portion 11 of this embodiment is provided in the vicinity of the first end portion 26 in the short side direction (longitudinal direction Y). The first panel side engagement portion 11 extends in the longitudinal direction (horizontal direction X) and rises from the rear surface 21 of the panel main body portion 10 in the thickness direction (front-rear direction Z, a direction perpendicular to the horizontal direction X and also perpendicular to the vertical direction Y) with a certain width. 6, the first panel side engaging portion 11 is provided in the center in the longitudinal direction (lateral direction X) and does not reach both ends in the longitudinal direction. That is, the length L1 of the first panel side engaging portion 11 in the longitudinal direction (lateral direction X) is shorter than the length L2 of the panel main body 10 in the longitudinal 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% or more and 90% or less of the length L2 of the panel main body portion 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] The first panel side engagement portion 11 in 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 portion 10, as shown in Figure 3, and is continuous with the plate-like body 25 that constitutes the back surface 21 of the panel main body portion 10. That is, the first panel side engaging portion 11 has a free end at its tip in the rising direction (the end on the side away from the panel main body 10), and is supported by the panel main body 10 in a cantilevered manner.

[0032] As shown in FIG. 4, the first panel side engaging portion 11 includes a first extending portion 30 and a second extending portion 31 in this order from the panel main body portion 10 side. The first extension portion 30 is an inclined wall portion that is inclined from the rear surface 21 of the panel main body 10 to the rear side in the front-rear direction Z and outward in the vertical direction Y (toward the first end 26 side). 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 to 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 engaging portions 12a, 12b are provided on the rear surface 21 side 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 Figure 3, the second panel side engagement portions 12a, 12b are provided near both ends in the longitudinal direction (horizontal direction X), and are provided near the end (second end 27) opposite the first panel side engagement portion 11 in the short direction (vertical direction Y). As shown in FIG. 5, the second panel side engaging portions 12a and 12b are leaf springs, and include a fixed portion 40, a rising portion 41, and a folded portion .

[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 obliquely from the upper end portion (the end portion on the second end portion 27 side) of the fixing portion 40. The rising angle θ1 of the rising portion 41 from the fixed portion 40 shown in FIG. 4 (the angle formed by the center line C1 of the fixed portion 40 and the center line C2 of the rising portion 41) is preferably an obtuse angle, and is greater than 90 degrees and less than or equal to 120 degrees.

[0036] As shown in FIGS. 4 and 5, the folded portion 42 is made up of a folded main body portion 45 and a biasing portion 46. The folded main body portion 45 is a portion that is 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 portion 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 greater than or equal to 30 degrees and less than or equal to 60 degrees.

[0037] The biasing portion 46 is a portion that constantly biases a part 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 inward 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 outward in the longitudinal direction Y (toward the second end portion 27). The engagement recess 49 is constituted by a first bent portion 47 and a second bent portion 48, and is a recess having a depth toward the inside in the vertical direction Y (toward the first end 26 side).

[0038] (Panel gutter section 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] (1st Regulation Part 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 Regulation Part 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 raised from the back surface 21 of the panel main body portion 10.

[0041] <Base member 3> The base member 3 is a holding member that is fixed to a wall surface 100 and holds the lighting panel 2, as shown in FIG. 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 part 50) As shown in FIG. 2, the housing 50 has a fixed side wall 60 and peripheral walls 61 to 64, and is provided with an enclosed space 65 enclosed by the walls 60 to 64. The fixed side wall portion 60 is a wall portion having a rectangular shape 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 side in the front-rear direction Z. The peripheral walls 61, 62 are horizontal walls extending in the horizontal direction X along the horizontal sides of the fixed side wall 60 when viewed from the front, and are opposed to each other in the vertical direction Y with the enclosed space 65 interposed therebetween. The peripheral walls 63, 64 are vertical walls extending in the vertical direction Y along the vertical sides of the fixed side wall 60 when viewed from the front, and are opposed to each other in the horizontal direction X with the enclosed space 65 interposed therebetween. 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 engagement portion 51) As shown in FIG. 2, the first base-side engaging portion 51 is a bent portion that is bent 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 inside the peripheral wall portion 61. As shown in FIG. 2, the first base-side engaging portion 51 is provided over most of the area in the lateral direction X, and is preferably provided over the entire area.

[0044] (Second base side engagement portion 52) As shown in Figure 2, the second base side engagement portion 52 is a bent portion that is bent downward (inward) from the front end portion of the peripheral wall portion 62, and more specifically, it is a folded portion that is folded back from the front end portion of the peripheral wall portion 62 and inclined toward the inside of the enclosed space 65. The second base side engaging portion 52 is capable of engaging with the second panel side engaging portions 12a and 12b. The second base-side engaging portion 52 extends in a direction intersecting the peripheral wall portion 62, and its tip in the extending direction is located inside the peripheral wall portion 62. In other words, the second base-side engaging portion 52 extends with a directional component approaching the first base-side engaging portion 51. As shown in FIG. 2, the second base-side engaging portion 52 is provided over most of the width in the lateral direction X, and is preferably provided over the entire width.

[0045] (Fixing mounting holes 53a, 53b) The fixing mounting holes 53a, 53b are mounting holes for inserting the shaft portion of the fastening element 102 to attach the base member 3 to the wall surface 100 as shown in Figure 7, and are through holes that penetrate the fixed side wall portion 60 in the thickness direction (front-to-back 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] (Space maintenance part 54a~54f) The gap maintaining portions 54a to 54f are portions that maintain the gap 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 rise from the fixed side wall portion 60 toward the rear (wall surface 100 side).

[0047] Next, the mounting operation when 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 base member 3 is fixed to the wall surface 100 by inserting the shaft portions of the fastening elements 102 into the fixing mounting holes 53a and 53b.

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

[0050] Next, as shown in Figure 8(a), the lighting panel 2 is tilted relative to the base member 3 fixed to the wall surface 100, and the spring portions 46 of the second panel side engaging portions 12a, 12b are pressed against the second base side engaging portions 52 to elastically deform the spring portions 46 of the second panel side engaging portions 12a, 12b, and the lighting panel 2 is rotated around the rotation axis of the portion of the spring 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 Figure 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 biasing portion 46 against the second base side engaging portion 52 against the biasing force of the biasing 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 pressing force of the biasing portions 46 of the second panel-side engaging portions 12a and 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 portion 11 with the first base-side engaging portion 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 sidewall 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 detachment operation when detaching the illumination panel 2 of this embodiment from the base member 3 will be described.

[0055] First, as shown in FIGS. 9(a) and 9(b), the illumination panel 2 is lifted upward (toward the second end 27) and the second base-side engagement portion 52 presses the engagement recess 49 of the biasing portion .

[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 standing portion 41 around the connection portion 44 with the standing portion 41, thereby moving closer to the standing portion 41. In addition, 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, bringing at least the first extension portion 30 of the first panel side engagement portion 11 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 urging portion 46 is positioned lower than the tip of the second base side engagement portion 52 (toward the first end 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] At this time, as shown in Fig. 10(b), the folded main body portion 45 is pressed by the second base-side engaging portion 52, causing the folded main body portion 45 to elastically deform and rotate toward the standing portion 41 around the connection portion 44 with the standing portion 41, thereby approaching the standing portion 41. When the second base-side engaging portion 52 moves beyond the folded main body portion 45 and approaches the panel main body portion 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 portion 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. 10(c).

[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 portion 46 of the folded portion 42 of the second panel side engaging portion 12a, 12b engages with the second base side engaging portion 52 and constantly biases the second base side engaging portion 52 outward in the short direction (vertical direction Y), so that the lighting panel 2 is less likely to come off from 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 engagement portion 51 of the base member 3 supports the gravitational load of the lighting panel 2, thereby preventing the lighting panel 2 from falling.

[0064] According to the lighting device 1 of this 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 12a and 12b 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 away from each other 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. Therefore, the lighting panel 2 can be easily removed from the base member 3. In particular, according to the lighting device 1 of this embodiment, when removing the lighting panel 2 from the base member 3, the lighting panel 2 is moved upward, which is the opposite direction to the direction in which the gravitational load of the lighting panel 2 is applied, so that the user supports the gravitational load of the lighting panel 2, and the engagement between the first panel side engagement portion 11 and the first base side engagement portion 51 is suddenly released, 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 portion 11, so that the lighting panel 2 is supported at at least three points with respect 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 portion 11 is not provided at both ends in the longitudinal direction, so when attaching the lighting panel 2 to the base member 3, 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.

[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 more than 90 degrees and not more than 120 degrees. Therefore, the horizontal component relative to the light-emitting surface 20 of the lighting panel 2 is larger 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, since 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, it is possible to ensure space for storing devices and the like 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 mounted on the wall surface 100 in a horizontal position (a position in which the longitudinal direction is the horizontal direction X) as shown in FIG. 1, or in a vertical position (a position in which the longitudinal direction is the vertical direction Y) as shown in FIG. 11, when the lighting device 1 of this embodiment is installed in a vertical position, 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 bears 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) and does not move in the vertical direction Y (up and down direction).

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

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

[0073] In the above-described 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-described 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 planar light-emitting panels may be used as the light-emitting panel 23. For example, a planar 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 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 by a connecting member 80 as shown in FIG. 12 . For example, when connecting using a connecting member 80 having a main body plate portion 83 and multiple protrusions 82 as shown in Figure 12, recesses 81A and 81B that can fit into the protrusions 82 of the connecting member 80 are provided on the fixed side wall portions 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 wall portions 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, thereby enabling connection.

[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. [Explanation of symbols]

[0080] 1. Lighting equipment 2 lighting panels 3 Base material 10 Panel body 11 First panel side engagement portion 12a, 12b Second panel side engagement portion 20 Light-emitting surface 21 Back side 26 First end 27 Second end 40 Fixed part 41 Rising section 42 Turning section 46 energizing section 51 first base side engagement portion 52 second base side engagement portion 100 Wall

Claims

1. A lighting panel and a base member are included. the illumination panel has a panel main body, a first panel side engaging portion, and a second panel side engaging portion; the panel main body has a light-emitting surface and a back surface, and is an elongated body extending in a longitudinal direction; the first panel-side engaging portion is provided on the rear surface side and on the first end side in the short side direction of the panel main body, the second panel-side engaging portion is provided on the rear surface side and on the second end side in the short direction of the panel main body, the base member has a first base-side engaging portion engageable with the first 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, the second panel side engaging portion is a leaf spring and has a fixed portion fixed to the rear surface of the panel main body portion, a rising portion rising from the fixed portion, and a folded portion folded back from an 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 panel is attachable to and detachable from the base member in a non-destructive manner; The lighting device of claim 1, wherein when the lighting panel is removed 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. the lighting panel has at least two second panel-side engagement portions; The lighting device according to claim 1 , wherein the first panel side engaging portion is located between the two second panel side engaging portions in the longitudinal direction.

4. The first panel side engaging portion extends in the longitudinal direction, The lighting device according to claim 3 , wherein the length of the first panel side engaging portion in the longitudinal direction is 50% to 90% of the length of the panel main body in the longitudinal direction.

5. The first panel side engaging portion extends in the longitudinal direction, The lighting device according to claim 3 , wherein 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 lateral direction.

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

7. 3. The lighting device according to claim 1, wherein, when viewed in a plane, the distance between a second end of the panel main body in the short side direction and the fixing portion is 1 / 4 or less of the length of the panel main body in the short side direction.

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