Lighting device

Abstract

To provide a lighting device capable of being commonly used for bar members of different specifications.SOLUTION: A lighting device comprises: a lighting fixture that is attached to a bar member, which is a part to be attached; a holding part that is attached to the lighting fixture, and holds the lighting fixture; an elastic part that is attached to the lighting fixture, extends downward from the holding part, and is in contact with a side surface of the bar member; and a movable part that is movable vertically, and is fixed to the lighting fixture when pressed downward. The elastic part generates a pressing force that presses the bar member when elastically deformed by the movable part pressed downward.SELECTED DRAWING: Figure 3

Description

Technical Field

[0001] The present disclosure relates to a lighting device, and more particularly to a holding mechanism of the lighting device.

Background Art

[0002] As a configuration for attaching a lighting device to a ceiling or the like, building materials called T-bars or bar members, which are attachment parts such as lighting devices, exist in various specifications with different cross-sectional shapes or dimensions. Therefore, the lighting device is designed and manufactured individually according to the specifications of the bar member and provided. In Patent Document 1, a lighting device is proposed in which a main body support fitting of the lighting device is placed on the head of the bar member from above, and a pressing spring that is elastically tiltable is attached to the main body support fitting so that the lighting device is installed on the bar member.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the lighting device of Patent Document 1, in order to prevent the lifting of the appliance body, the main body support fitting and the pressing spring must be individually optimized so that the main body support fitting and the pressing spring correspond to the shape of the T-bar. Thus, in order to attach the lighting device to the bar member that is the attachment part, it is required to manufacture a variety of lighting devices in small lots according to the specifications of the bar member, but there is a problem that it is inefficient in terms of the design, manufacture, inventory management, or logistics of the lighting device.

[0005] An object of the present disclosure is to provide a lighting device that can be commonly used for bar members of different specifications.

Means for Solving the Problems

[0006] The lighting device according to the present disclosure includes a lighting fixture attached to a bar member that is an attachment portion, a holding portion attached to the lighting fixture and holding the lighting fixture, an elastic portion attached to the lighting fixture, extending downward from the holding portion, and contacting a side surface of the bar member, and a movable portion that is movable up and down and is fixed to the lighting fixture in a state of being pushed downward. The elastic portion generates a pressing force that presses the bar member in a state of being elastically deformed by the movable portion pushed downward.

Effect of the Invention

[0007] According to the lighting device according to the present disclosure, a holding portion having a locking portion locked to a bar member and a fixing portion in which a long hole is formed and fixed to an appliance body is provided, and the height of the locking portion is adjusted by the long hole of the fixing portion. Therefore, a common lighting device can be attached to bar members of different specifications.

Brief Description of the Drawings

[0008]

Figure 1

Figure 2

Figure 3

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Figure 8

Figure 9

Figure 10

Figure 11

Figure 12

Figure 13

Figure 14

Figure 15

Figure 16

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Figure 18

Figure 19

Mode for carrying out the invention

[0009] Hereinafter, embodiments of the lighting device and the lighting fixture according to the present disclosure will be described with reference to the drawings. The present disclosure is not limited to the following embodiments, and various modifications can be made without departing from the gist of the present disclosure. Further, the present disclosure includes all combinations of configurations that can be combined among the configurations shown in the following embodiments. In particular, the combination of components is not limited to only the combinations in each embodiment, and the components described in one embodiment can be applied to another embodiment. Also, the lighting device and the lighting fixture shown in the drawings are examples of the lighting device and the lighting fixture of the present disclosure, and the lighting device and the lighting fixture of the present disclosure are not limited by the lighting device and the lighting fixture shown in the drawings. Further, in the following description, terms indicating directions (for example, "up", "down", "right", "left", "front", "rear", etc.) are appropriately used for ease of understanding, but these are for the purpose of explanation and do not limit the present disclosure. Also, in each figure, those with the same reference numerals are the same or corresponding ones, which is common throughout the entire specification. Note that in each drawing, the relative dimensional relationships or shapes of the respective components may be different from the actual ones.

[0010] Embodiment 1. <Lighting device 1> FIG. 1 is a perspective view of a lighting device 1 having a lighting fixture 2 according to Embodiment 1 of the present disclosure as viewed from above. FIG. 2 is a perspective view of a lighting device 1 having a lighting fixture 2 according to Embodiment 1 of the present disclosure as viewed from below. FIG. 3 is an exploded perspective view of a lighting device 1 having a lighting fixture 2 according to Embodiment 1 of the present disclosure. FIG. 4 is an exploded perspective view for explaining a holding mechanism 50 of the lighting fixture 2 according to Embodiment 1 of the present disclosure. FIG. 5 is a perspective view of a holding portion 51 of the holding mechanism 50 according to Embodiment 1 of the present disclosure as viewed from the outside. FIG. 6 is a perspective view of a holding portion 51 of the holding mechanism 50 according to Embodiment 1 of the present disclosure as viewed from the inside. FIG. 7 is a perspective view of an elastic portion 52 of the holding mechanism 50 according to Embodiment 1 of the present disclosure. FIG. 8 is a perspective view of a lighting device 1 having a lighting fixture 2 according to Embodiment 1 of the present disclosure as viewed from below and inside. FIG. 9 is a schematic diagram for explaining a restricting portion 54 of the holding mechanism 50 according to Embodiment 1 of the present disclosure.

[0011] As shown in FIGS. 1 to 9, the lighting device 1 has an elongated shape and includes a lighting fixture 2 and a holding mechanism 50. In the following description, the longitudinal direction of the lighting device 1 is referred to as the X direction, and the short-side direction of the lighting device 1 is referred to as the Y direction. Also, the ceiling to which the lighting device 1 is attached is located above the lighting device 1. Further, the lower side of the lighting device 1 is referred to as the irradiation region side, and the vertical direction of the lighting device 1 is referred to as the Z direction. The lighting device 1 has a lighting fixture 2 and a lamp unit 3, and is attached and held by a holding mechanism 50 to a bar member 9 which is an attachment portion provided on a ceiling or the like.

[0012] <bar member 9> The bar member 9 has a T-shaped cross section and is a member also called a T-bar. The bar member 9 has a base portion 91, a standing portion 92, and a suspension portion 93. The bar member 9 exists in various specifications in which the dimensions or shapes of the base portion 91, the standing portion 92, and the suspension portion 93 are different from each other. A system ceiling is formed by combining a plurality of bar members 9. The bar member 9 is installed so as to extend along the X direction which is the longitudinal direction.

[0013] The base portion 91 is a portion at the lower end of the bar member 9. When the lighting device 1 is attached to the bar member 9, the base portion 91 extends along the Y direction of the lighting device 1 in a sectional view. The standing portion 92 is a portion that extends upward from the center of the base portion 91 and is, for example, perpendicular to the base portion 91. The suspension portion 93 is a portion at the upper end of the standing portion 92. The standing portion 92 connects the base portion 91 and the suspension portion 93.

[0014] <lamp unit 3> The lighting fixture 3 has an elongated shape extending along the X direction which is the longitudinal direction. The lighting fixture 3 is accommodated in the accommodation space S of the fixture main body 21 of the lighting appliance 2. The lighting fixture 3 irradiates light on the irradiation area by the electric power supplied from an external power source. The lighting fixture 3 has a pedestal 30 and a fixture-side connecting portion 84. The pedestal 30 is a plate-shaped member extending along the X direction which is the longitudinal direction. One surface of the pedestal 30 is, for example, a light-emitting portion on which LEDs which are light sources for emitting light are mounted. The fixture-side connecting portion 31 is provided on the other surface of the pedestal 30. The fixture-side connecting portion 31 is a portion where the connecting spring 214 of the lighting appliance 2 is hooked.

[0015] <lighting appliance 2> The lighting appliance 2 includes a fixture main body 21, a first end plate 22, a second end plate 23, and a light-shielding portion 24. The lighting appliance 2 has a substantially trapezoidal cross section as a whole. The lighting appliance 2 may have various shapes, for example, a substantially rectangular cross section. A lighting fixture 3 having a light source such as an LED, a semiconductor laser, an organic EL, or an inorganic EL is detachably attached to the lighting appliance 2. The lighting appliance 2 is attached to the bar member 9 constituting the system ceiling by a holding mechanism 50.

[0016] <fixture main body 21> The fixture main body 21 is an elongated and plate-shaped portion extending along the X direction which is the longitudinal direction. The fixture main body 21 is arranged between adjacent bar members 9 such that the longitudinal direction coincides with the extending direction of the bar member 9. The dimension in the Y direction which is the short side direction of the fixture main body 21 is substantially the same as the interval between adjacent bar members 9. A lighting fixture 3 which is a light source unit is accommodated in the fixture main body 21. The fixture main body 21 is fixed to each of the light-shielding portion 24 and the first end plate 22 by caulking, screwing, riveting, or welding.

[0017] The appliance body 21 has a top plate portion 211, side wall portions 212, inclined surface portions 213, and connecting springs 214. The top plate portion 211 is a plate-shaped portion extending along the X direction and is located at the central part of the appliance body 21. A pair of slits 2111 are formed in the top plate portion 211 along the X direction. The pair of slits 2111 are, for example, groove-shaped and open such that their openings face each other. The configuration of the pair of slits 2111 is not limited to this, and for example, they may penetrate in the short side direction. The top plate portion 211 is provided with a region where a terminal block (not shown) is attached and insertion holes 2112 into which electric wires (not shown) are inserted. An electric wire connecting the external power supply and a power supply unit (not shown) is drawn in through the insertion holes 2112.

[0018] The side wall portions 212 are a pair of plate-shaped portions extending from both ends in the X direction, which is the longitudinal direction of the top plate portion 211, along the Z direction toward the irradiation region side. The side wall portions 212 form an accommodation space S for accommodating the lamp unit 3 between them and the top plate portion 211.

[0019] The inclined surface portions 213 are a pair of plate-shaped portions extending from the lower ends of the side wall portions 212. The inclined surface portions 213 are inclined from the lower ends of the side wall portions 212 toward the irradiation region side and outward in the Y direction, which is the short side direction. A reflection film for reflecting light is provided on the inclined surface portions 213. By providing the reflection film on the inclined surface portions 213, a part of the light irradiated from the lamp unit 3 is reflected toward the irradiation region side.

[0020] The connecting springs 214 are leaf springs formed by bending a plate-shaped member made of metal. The connecting springs 214 are attached in a pair along the X direction to the lower surface of the top plate portion 211. The connecting springs 214 are provided inside the top plate portion 211 in the X direction with respect to the slits 2111. The lamp unit side connection portions 84 of the lamp unit 3 are hooked on the connecting springs 214. The lamp unit 3 is fixed to the lighting fixture 2 by the connecting springs 214.

[0021] <The first end plate 22> The first end plate 22 covers the upper side of the end of the lighting fixture 2 in the X direction. The first end plate 22 is fixed to each of the fixture body 21 and the second end plate 23 by caulking, screwing, riveting, welding, or the like.

[0022] The first end plate 22 has a first end plate main body 221, an end plate side portion 222, a flange portion 223, and a folded-back portion 224. The first end plate main body 221 is a plate-shaped portion extending along the Y direction.

[0023] The end plate side portion 222 is a portion extending from both ends of the first end plate main body 221 in the Y direction toward the fixture body 21 side along the X direction. A first end plate fixing hole 2221 is formed in the end plate side portion 222. A fixing member 58 is screwed into the first end plate fixing hole 2221 to attach the holding portion 51 and the elastic portion 52.

[0024] The flange portion 223 is a portion extending from both ends of the first end plate main body 221 in the Z direction toward the fixture body 21 side along the X direction. The second end plate 23 is fixed to the lower flange portion 223.

[0025] The folded-back portion 224 is a portion extending upward from the center of the end of the lower flange portion 223. The folded-back portion 224 is located inside the accommodation space S. The movement of the movable portion 53 in the X direction is restricted by the first end plate main body 221 and the folded-back portion 224 formed on the flange portion 223.

[0026] <The second end plate 23> The second end plate 23 covers the lower side of the end of the lighting fixture 2 in the X direction. The second end plate 23 is fixed to the lower part of the first end plate 22 by, for example, caulking, screwing, riveting, or welding.

[0027] The second end plate 23 has a second end plate main body 231, an upper flange portion 232, and a lower flange portion 233. The second end plate main body 231 is located below the first end plate main body 221 and is a plate-shaped portion extending along the Y direction.

[0028] The upper flange portion 232 extends from the upper side of the sides extending in the Y direction, which is the lateral direction of the appliance body 21 and the longitudinal direction of the second end plate body 231, toward the appliance body 21. The lower part of the flange portion 223 of the first end plate 22 is fixed to the upper flange portion 232.

[0029] The lower flange portion 233 extends from the lower side of the sides extending in the Y direction, which is the lateral direction of the appliance body 21 and the longitudinal direction of the second end plate body 231, so as to project to the side opposite to the appliance body 21. The lower flange portion 233 is placed on the upper part of the base portion 91 of the bar member 9 when the lighting device 1 is attached to the bar member 9. A rising portion 234 extending upward from the distal end from the appliance body 21 is formed on the lower flange portion 233. The rising portion 234 is, for example, a portion in contact with an equipment plate adjacent to the lighting device 1 or a ceiling member orthogonal to the bar member 9.

[0030] <Light-shielding portion 24> The light-shielding portion 24 extends along the X direction, which is the longitudinal direction of the appliance body 21, and covers both ends in the Y direction, which is the lateral direction of the appliance body 21. The light-shielding portion 24 is, for example, a plate-like member bent in an L shape in a cross-sectional view. The light-shielding portion 24 is fixed to the appliance body 21 by caulking, screwing, riveting, welding, or the like.

[0031] <Holding mechanism 50> The holding mechanism 50 includes a holding portion 51, an elastic portion 52, a movable portion 53, and a regulating portion 54. The holding mechanism 50 can be adjusted according to a bar member 9 such as a CT clip, a T-hanger, a T-bar hanger, or a T-bar receiving channel at the construction site of the lighting device 1. The holding mechanism 50 is adjusted according to the bar member 9, and the lighting device 1 is fixed to the bar member 9. The holding mechanism 50 is arranged across the Y direction, which is the lateral direction of the lighting fixture 2. The holding mechanism 50 is provided, for example, at both ends in the X direction, which is the longitudinal direction of the lighting fixture 2.

[0032] <Holding portion 51> The holding part 51 has a fixing part 511 and a locking part 512. The holding part 51 is provided at both ends in the Y direction of the holding mechanism 50 when the lighting device 1 is attached to the attached part. The holding part 51 is attached to the lighting fixture 2 and holds the lighting fixture 2 on the bar member 9. Specifically, the fixing part 511 of the holding part 51 is provided along the side surface of the lighting fixture 2, and the locking part 512 of the holding part 51 is locked to the bar member 9, so that the lighting fixture 2 is held on the bar member 9.

[0033] The fixing part 511 has a plate-shaped fixing part main body 5111 and a pair of fixing part side parts 5112 extending from both side edges of the fixing part main body 5111 so as to face each other. The fixing part main body 5111 is arranged to be parallel to the XZ plane when the holding part 51 is attached to the lighting fixture 2. A long hole 5111a extending in the vertical direction is formed in the fixing part main body 5111. The long hole 5111a is provided, for example, at the center of the fixing part main body 5111. A fixing member 58 is inserted into the long hole 5111a of the fixing part main body 5111. The holding part 51 is fixed to the lighting fixture 2 by the fixing member 58 so as to be movable along the direction of the long hole 5111a. The fixing member 58 is, for example, a stepped screw.

[0034] The fixing part side part 5112 extends from both ends in the X direction of the fixing part main body 5111, that is, from both side edges of the fixing part main body 5111 toward the lighting fixture 2 side when the holding part 51 is attached to the lighting fixture 2. The end of the first part 5121 of the locking part 512 is connected to the fixing part side part 5112.

[0035] The locking part 512 is a part that is locked to the hanging part 93 which is the upper part of the bar member 9. The locking part 512 is fixed to the fixing part 511 by a fixing screw 5112c inserted into an insertion hole 5112b formed in a fixing piece 5112a extending in the X direction from the lower end of the fixing part side part 5112. The locking part 512 may be integrally formed with the fixing part 511.

[0036] The locking portions 512 are attached at both ends of the lighting fixture 2 in the short side direction, that is, in the Y direction, so that the holding portions 51 are point-symmetrical. This is because the two holding portions 51 with the same direction where the locking portions 512 are provided are arranged in opposite directions to each other. When the directions where the locking portions 512 are provided are the same, it is efficient in terms of inventory space or inventory management when storing the holding portions 51 assembled or integrally formed as semi-finished products.

[0037] The locking portion 512 of the holding portion 51 may be configured to be replaceable with the fixing portion side portion 5112 provided on the opposite side of the fixing portion main body 5111. Thereby, for example, it is possible to cope with construction problems such as members such as metal fittings for suspending the bar member 9 provided on the building material interfering with the locking portion 512, so the restrictions on the installation of the lighting fixture 2 are relaxed and it is possible to cope with various construction conditions.

[0038] The locking portion 512 is a plate-like member and is L-shaped in a cross-sectional view. The locking portion 512 has a first portion 5121 and a second portion 5122. The first portion 5121 is a portion extending in the Y direction from the lighting fixture 2 and is a portion disposed on the hanging portion 93 which is the upper part of the bar member 9. By placing the first portion 5121 on the upper part of the bar member 9, the downward movement of the lighting device 1 can be restricted.

[0039] The second portion 5122 is a portion that bends at the tip of the first portion 5121 and extends downward. The second portion 5122 extends parallel to the standing portion 92 of the bar member 9, for example, when the holding portion 51 is attached to the lighting fixture 2. The second portion 5122 can regulate the movement of the lighting device 1 in the Y direction and away from the bar member 9.

[0040] When the holding part 51 is attached to the lighting fixture 2, the fixing part 511 that engages with the fixing member 58 moves up and down along the direction of the long hole 5111a, so that the height position of the locking part 512 relative to the lighting fixture 2 can be adjusted according to the height of the bar member 9. As a result, it becomes possible to attach a common holding part 51 to a plurality of bar members 9 with different specifications such as shape or dimensions, and a common lighting device 1 can be used for a plurality of bar members 9 with different specifications.

[0041] <Elastic part 52> The elastic part 52 has an elastic part main body 521, an inclined part 522, a deformed part 523, and a tip part 524, and is a plate-like member that is bent at a plurality of locations. The elastic part 52 is provided at both ends of the holding mechanism 50 in the Y direction when the lighting device 1 is attached to the attached part. The elastic part 52 presses the holding part 51 downward by an elastic force. Further, when the movable part 53 is pushed down, the bent portions of the elastic part 52 are elastically deformed and biased. Then, in the elastically deformed state, the elastic part 52 presses the bar member 9 from the inside to the outside, that is, from the lighting fixture 2 toward the bar member 9.

[0042] The elastic part main body 521 is a plate-like portion extending in the Z direction, and a fixing hole 521a is formed at the center. The fixing hole 521a is a through hole through which the fixing member 58 is inserted. The elastic part main body 521 is a portion disposed between the fixing part 511 of the holding part 51 and the end plate side portion 222 of the first end plate 22 when the lighting device 1 is attached to the attached part.

[0043] The inclined portion 522 is a portion that extends upward from the upper end, which is one end side of the elastic portion main body 521 in the Z direction. The inclined portion 522 is bent in the Y direction at the first bent portion 5211 at the upper end of the elastic portion main body 521, and is bent so as to be inclined outward and in the direction of the bar member 9 in a state where the lighting device 1 is attached to the attached portion. The inclined portion 522 is a portion that abuts against the upper end portion 5111b of the fixing portion 511 in a state where the elastic portion 52 is attached to the lighting fixture 2 together with the holding portion 51. When the inclined portion 522 abuts against the upper end portion 5111b of the fixing portion 511, the inclined portion 522 presses the holding portion 51 that is movable up and down along the direction of the long hole 5111a downward. The pressing force of the inclined portion 522 moves the holding portion 51 downward until the first portion 5121 of the locking portion 512 abuts against the hanging portion 93, which is the upper portion of the bar member 9, and presses the bar member 9 downward in a state where the locking portion 512 is placed on the hanging portion 93.

[0044] The deformed portion 523 is a portion that extends downward from the lower end, which is the other end side of the elastic portion main body 521 in the Z direction. The deformed portion 523 is bent at a plurality of locations. Specifically, the deformed portion 523 is bent at the second bent portion 5231 at the lower end of the elastic portion main body 521 and extends outward in the Y direction (toward the lower left in FIG. 7). The deformed portion 523 is further bent at the third bent portion 5232 and extends inward in the Y direction (toward the lower right in FIG. 7). The deformed portion 523 is further bent at the fourth bent portion 5233 and extends outward in the Y direction (toward the lower left in FIG. 7). By being bent at a plurality of locations, the deformed portion 523 stores elastic force when the elastic portion 52 is elastically deformed.

[0045] The tip portion 524 extends outward in the Y direction from the lower end of the deformation portion 523. The tip portion 524 bends at the fifth bending portion 5241 at the lower end of the deformation portion 523 and extends outward and upward (toward the upper left in FIG. 7) in the Y direction. The tip portion 524 is a portion that contacts the standing portion 92 of the bar member 9 when the lighting device 1 is attached to the attached portion. When the tip portion 524 contacts the standing portion 92 of the bar member 9, a pressing force is generated on the bar member 9. Since the elastic portion 52 is elastically deformed, the pressing force from the tip portion 524 is adjusted according to the shape of the bar member 9, so that the movement of the instrument body 21 in the Y direction can be restricted regardless of the shape of the bar member 9. Further, when the tip portion 524 generates a pressing force, the floating of the instrument body 21, that is, the upward movement is restricted.

[0046] <Movable part 53> The movable part 53 is disposed between the first end plate main body 221 of the first end plate 22 and the end face of the lighting fixture 2 in the X direction. The movable part 53 is a member that can move in the vertical direction with respect to the lighting fixture 2. The movable range of the movable part 53 in the vertical direction, that is, the Z direction, is limited by the flange portions 223 provided above and below.

[0047] The movable part 53 has a main part 531 extending along the Y direction and acting parts 532 provided at both ends of the main part 531 in the Y direction. The main part 531 is disposed inside the first end plate main body 221 and overlaps the first end plate main body 221. The dimension of the main part 531 in the Y direction is larger than the dimension of the first end plate main body 221 in the Y direction. Thereby, the movable part 53 can move relatively in the Z direction (vertical direction) with respect to the lighting fixture 2.

[0048] The acting part 532 extends along the X direction from both ends of the first end plate body 221. The acting part 532 is arranged inside the end plate side part 222 and overlaps with the end plate side part 222. In a state where the movable part 53 is pushed downward, the acting part 532 presses the elastic part 52 with its lower end, so that the deformed part 523 of the elastic part 52 is elastically deformed, and the tip part 524 moves outward along the Y direction. By pushing down the acting parts 532 provided at both ends in the Y direction, the elastic parts 52 provided at both ends of the holding mechanism 50 in the Y direction are pressed evenly. Thereby, the movement of the lighting fixture 2 in the Y direction is uniformly restricted, and the lighting fixture 2 is arranged at the central part of the bar member 9 parallel to it.

[0049] <Restricting part 54> The restricting part 54 is attached to the inner surface of the top plate part 211 of the lighting fixture 2. The restricting part 54 is provided to restrict the upward movement of the movable part 53 pushed downward. The restricting part 54 has a plate-shaped flat part 541 along the top plate part 211 and a side part 542 extending downward from the side along the X direction of the flat part 541.

[0050] An engaging piece 541a that is inserted into and engaged with the slit 2111 of the top plate part 211 is formed on the flat part 541. By inserting the engaging piece 541a of the restricting part 54 into the slit 2111, the restricting part 54 can move in the X direction with respect to the top plate part 211. A pair of engaging pieces 541a are provided side by side in the Y direction at positions corresponding to the slit 2111 of the top plate part 211. The engaging piece 541a protrudes upward from the restricting part 54 and bends in the Y direction, for example, in a direction away from each other. The configuration of the engaging piece 541a only needs to be able to move in a state of being inserted into the slit 2111, and is not particularly limited.

[0051] A recess 542a is formed in the side portion 542. The recess 542a is provided at the lower end of the side portion 542 and is a portion that is notched and opens downward. The upper end of the movable portion 53 that is to be pushed upward is fitted into the recess 542a, whereby the upward movement of the movable portion 53 due to the restoring force of the elastic portion 52 can be restricted.

[0052] <Mounting procedure of the lighting fixture 2> FIG. 10 is a perspective view for explaining the mounting procedure of the lighting fixture 2 according to Embodiment 1 of the present disclosure, and is a perspective view showing a state in which the holding portion 51 and the elastic portion 52 of the holding mechanism 50 are fixed to the first end plate 22. FIG. 11 is a side view for explaining the mounting procedure of the lighting fixture 2 according to Embodiment 1 of the present disclosure, and is a side view showing a state in which the holding portion 51 and the elastic portion 52 of the holding mechanism 50 are fixed to the first end plate 22. In FIG. 10, for simplicity of explanation, the illustration of the bar member 9 is omitted.

[0053] As shown in FIGS. 10 and 11, the holding portion 51 and the elastic portion 52 that constitute the holding mechanism 50 are attached to the lighting fixture 2. Specifically, using the fixing member 58, the fixing portion 511 of the holding portion 51 and the elastic portion main body 521 of the elastic portion 52 are fixed to the end plate side portion 222 of the first end plate 22. In the mounting procedure of the lighting fixture 2, first, the fixing portion 511 of the holding portion 51 is moved upward along the arrow A1 so that the locking portion 512 is located above the hanging portion 93 which is the upper part of the bar member 9. In this state, the upper end portion 5111b of the fixing portion 511 is pressed downward by the inclined portion 522 of the elastic portion 52, and the locking portion 512 of the holding portion 51 moves downward and its height position is adjusted. Thereby, the locking portion 512 is adjusted so that the first portion 5121 of the locking portion 512 comes into contact with the hanging portion 93 of the bar member 9. Then, with the fixing portion 511 and the elastic portion 52 fixed to the first end plate 22, the movable portion 53 is pulled downward (in the direction of the arrow A2). Thereby, the deformed portion 523 of the elastic portion 52 that is pressed against the lower end of the acting portion 532 is elastically deformed, and the tip portion 524 moves outward along the Y direction (in the direction of the arrow A3).

[0054] FIG. 12 is a perspective view showing a state in which the movable part 53 of the holding mechanism 50 according to Embodiment 1 of the present disclosure is pulled down. FIG. 13 is a side view showing a state in which the movable part 53 of the holding mechanism 50 according to Embodiment 1 of the present disclosure is pulled down. In FIG. 12, for simplicity of explanation, the bar member 9 is not shown.

[0055] As shown in FIGS. 12 and 13, the movable part 53 is pulled downward (in the direction of arrow A2) with the fixed part 511 of the holding part 51 and the elastic part 52 fixed to the first end plate 22. The movable part 53 is operated and pulled down, for example, by the hand of a construction worker. As a result, the deformed part 523 of the elastic part 52 is elastically deformed, and the tip part 524 of the elastic part 52 moves so as to be pushed out toward the bar member 9 side (in the direction of arrow A3). In a state where the elastic part 52 is elastically deformed, the tip part 524 of the elastic part 52 contacts the surface of the standing part 92 of the bar member 9 on the side of the lighting fixture 2 and presses the standing part 92 outward in the Y direction (in the direction of arrow A3).

[0056] Further, since the inclined part 522 of the elastic part 52 is exposed from the upper end part 5111b of the fixed part 511 and is inclined outward in the Y direction, a pressing force acts from the inclined part 522 to the upper end part 5111b of the fixed part 511. For this reason, since the upward movement of the fixed part 511 is restricted, the holding part 51 is prevented from floating up from the bar member 9 in a state where the lighting fixture 2 is attached to the bar member 9.

[0057] By performing the above procedure, the holding mechanism 50 can hold the lighting fixture 2 to the bar member 9.

[0058] Here, in the standing part 92 of the bar member 9, the position where the tip part 524 abuts is defined as the abutting position. At this time, the vertical length dimension H1 of the second part 5122, that is, the length dimension H1 of the second part 5122 is preferably larger than the distance dimension H2 from the suspension part 93 of the bar member 9 to the abutting position, and H1 > H2 ≧ 0.

[0059] Thus, even if the luminaire 2 moves in the vertical direction due to vibration, shock, or impact transmitted from the outside via the bar member 9 to the luminaire 2 or the holding mechanism 50, the lighting device 1 is surely held by the bar member 9, and the lighting device 1 is prevented from falling off the bar member 9.

[0060] Further, since the lighting device 1 includes a holding mechanism 50 that holds the luminaire 2 on the bar member 9 with the elastic portion 52 capable of elastic deformation pressing the bar member 9, it absorbs vibration, shock, or impact transmitted from the outside via the bar member 9. Therefore, the risk of damage to the lighting device 1 or the holding mechanism 50 including the locking portion 512 can be reduced.

[0061] FIG. 14 is a perspective view showing a state in which the luminaire 2 according to Embodiment 1 of the present disclosure is attached to the bar member 9. As shown in FIG. 14, the inclined portion 522 of the elastic portion 52 is exposed from the upper end portion 5111b of the fixing portion 511 in a state where the lighting device 1 is attached to the attachment portion, and presses the upper end portion 5111b of the fixing portion 511. For this reason, the locking portion 512 of the holding portion 51 is placed on the suspension portion 93 while pressing the suspension portion 93 of the bar member 9, restricting the downward movement (preventing falling) of the luminaire 2.

[0062] <Action of the restricting portion 54> FIG. 15 is an enlarged perspective view of the lighting device 1 having the luminaire 2 according to Embodiment 1 of the present disclosure viewed from below and inside. FIG. 16 is an enlarged perspective view for explaining the action of the restricting portion 54 of the holding mechanism 50 according to Embodiment 1 of the present disclosure.

[0063] As shown in FIG. 15, when the movable portion 53 is pulled downward (in the direction of arrow B1), the restricting portion 54 is disposed at a position farthest from the first end plate 22 in the X direction of the fixture main body 21. The movable portion 53 is operated, for example, by a construction worker through the accommodation space S of the luminaire 2 and pulled downward (in the direction of arrow B1). Since the restricting portion 54 is disposed away from the first end plate 22, the operation of pulling down the movable portion 53 is not hindered.

[0064] Next, in a state where the movable part 53 is pulled down, the restricting part 54 is moved in the X direction toward the first end plate 22 (the direction of arrow B2). The movement of the restricting part 54 is performed until the movable part 53 fits into a recess 542a provided in a side part 542 of the restricting part 54. In a state where the movable part 53 is pulled down, the elastic part 52 has a reaction force due to being pressed by the movable part 53 and has a force to move the movable part 53 upward to push it back. By operating the restricting part 54 until the movable part 53 fits into the recess 542a of the restricting part 54, the upward movement of the movable part 53 can be restricted.

[0065] <Adjustment of the holding part 51> FIG. 17 is a side view when the lighting fixture 2 according to Embodiment 1 of the present disclosure is attached to the first bar member 9a. FIG. 18 is a side view when the lighting fixture 2 according to Embodiment 1 of the present disclosure is attached to the second bar member 9b. FIG. 19 is a side view when the lighting fixture 2 according to Embodiment 1 of the present disclosure is attached to the third bar member 9c.

[0066] As shown in FIGS. 17 to 19, the height dimension of the holding part 51 with respect to the lighting fixture 2 is adjusted so as to match the respective height dimensions of the first bar member 9a, the second bar member 9b, and the third bar member 9c.

[0067] The first bar member 9a is, for example, a member having a height dimension H of 30 mm and is the bar member 9 having the lowest height dimension H among the first bar member 9a, the second bar member 9b, or the third bar member 9c. The second bar member 9b is, for example, a member having a height dimension H of 37 mm, is higher than the height dimension H of the first bar member 9a, and is a bar member 9 lower than the height dimension H of the third bar member 9c. The third bar member 9c is, for example, a member having a height dimension H of 40 mm and is the bar member 9 having the highest height dimension H among the first bar member 9a, the second bar member 9b, or the third bar member 9c.

[0068] The holding part 51 of the holding mechanism 50 is attached to the lighting fixture 2 so as to be movable along the vertical direction (Z direction). Further, the locking part 512 of the holding part 51 is disposed at and locked to the position of each suspension part 93 of the first bar member 9a, the second bar member 9b, or the third bar member 9c having different height dimensions H. Thereby, the holding mechanism 50 can be surely fixed at the height position corresponding to each of the first bar member 9a, the second bar member 9b, or the third bar member 9c.

[0069] Further, in the elastic part 52 of the holding mechanism 50, when the deformation part 523 is elastically deformed by the movable part 53, a pressing force is generated from the tip part 524 toward each of the first bar member 9a, the second bar member 9b, or the third bar member 9c. At this time, since the upward movement of the movable part 53 is restricted by the restricting part 54 of the holding mechanism 50 in the pushed-down state, a pressing force from the tip part 524 toward each of the first bar member 9a, the second bar member 9b, or the third bar member 9c always acts. Thereby, the movement of the holding mechanism 50 in the Y direction and the downward movement of the lighting fixture 2 to which the holding mechanism 50 is fixed can be surely restricted.

[0070] According to the lighting device 1 according to the first embodiment described above, the elastic part 52 in contact with the side surface of the bar member 9 generates a pressing force against the bar member 9 in the elastically deformed state. Since the pressing force against the bar member 9 is generated by the movable part 53 being pushed down and the elastic part 52 being elastically deformed, it is adjusted according to the shape of the bar member 9. Thereby, even when the shape or dimension of the bar member 9 is different, the lighting device 1 can be attached using the common holding mechanism 50.

[0071] Further, when the movable part 53 is pushed downward, in the elastic part 52, the deformation part 523 moves in a direction away from the instrument main body 21, and the tip part 524 presses the side surface of the bar member 9. Therefore, when the elastic part 52 is attached to the bar member 9 of the holding mechanism 50, it is separated from the bar member 9 and is moved in the direction of the bar member 9 after attachment. As a result, when the holding mechanism 50 is attached to the bar member 9, the path of the elastic part 52 is not obstructed by the bar member 9, and after the holding mechanism 50 is attached to the bar member 9, the elastic part 52 can be reliably held by the bar member 9.

[0072] Also, at both ends of the movable part 53 extending in the short side direction (Y direction) of the lighting fixture 2, the pair of acting parts 532 are simultaneously pulled down, and each of the pair of elastic parts 52 is simultaneously elastically deformed. Therefore, at both ends in the short side direction (Y direction), the balance of the pressing force against the bar member 9 due to the elastic deformation of the elastic part 52 is achieved, and the movement of the instrument main body 21 in the short side direction (Y direction) can be uniformly restricted. Further, the lighting fixture 2 can be arranged at the central part of the parallel bar members 9.

[0073] Further, a long hole 5111a extending in the vertical direction is formed in the holding part 51, and the holding part 51 is fixed to the lighting fixture 2 so as to be movable in the vertical direction by using a fixing member 58 inserted through the long hole 5111a. And the lighting fixture 2 is locked to the bar member 9 by the holding part 51. Therefore, it is possible to adjust the height of the locking part 512 of the holding part 51 to a position corresponding to the height of the bar member 9, and even when the height of the bar member 9 is different, the lighting fixture 2 can be held by using the common holding part 51.

[0074] Hereinafter, various aspects of the present disclosure will be collectively described as appendices.

[0075] (Appendix 1) A lighting fixture attached to a bar member which is an attached part, A holding part attached to the lighting fixture and holding the lighting fixture, An elastic part that is attached to the lighting fixture, extends downward from the holding part, and abuts against the side surface of the bar member, A movable part that is movable up and down and is fixed to the lighting fixture in a state of being pushed downward, and includes, The elastic part generates a pressing force that presses the bar member in a state of being elastically deformed by the movable part pushed downward. Lighting device. (Appendix 2) The elastic part is, A deformed part that extends downward from the holding part, A tip part that bends from the deformed part and extends in a direction away from the lighting fixture, and has, In a state where the movable part is pushed downward, the deformed part moves in a direction away from the lighting fixture, and the tip part presses the side surface of the bar member. The lighting device according to Appendix 1. (Appendix 3) The lighting fixture has a long-shaped fixture body, A pair of the elastic parts are provided at both ends in the short side direction of the fixture body, The movable part extends across the short side direction of the fixture body, At both ends of the movable part, each of the pair of elastic parts is elastically deformed. The lighting device according to Appendix 1 or Appendix 2. (Appendix 4) The holding part is, A locking part that is locked to the upper part of the bar member, A fixing part that extends upward along the lighting fixture from the locking part and has a long hole formed in the vertical direction, and is fixed to the lighting fixture by a fixing member inserted into the long hole, and includes, The lighting device according to any one of Appendices 1 to 3.

Explanation of reference numerals

[0076] 1 Lighting device, 2 Lighting fixture, 3 Lamp, 9 Bar member, 9a First bar member, 9b Second bar member, 9c Third bar member, 21 Appliance body, 22 First end plate, 23 Second end plate, 24 Light-shielding part, 30 Base, 31 Lamp-side connecting part, 50 Holding mechanism, 51 Holding part, 52 Elastic part, 53 Movable part, 54 Regulation part, 58 Fixing member, 91 Base part, 92 Upright part, 93 Suspension part, 211 Ceiling part, 212 Side wall part, 213 Inclined surface part, 214 Connecting spring, 221 First end plate body, 222 End plate side part, 223 Flange part, 224 Folded-back part, 231 Second end plate body, 232 Upper flange part, 233 Lower flange part, 234 Upright part, 511 Fixing part, 512 Locking part, 521 Elastic part body, 521a Fixing hole, 522 Inclined part, 523 Deformation part, 524 Tip part, 531 Main part, 532 Acting part, 541 Flat part, 541a Engaging piece, 542 Side part, 542a Recess, 2111 Slit, 2112 Insertion hole, 2221 First end plate fixing hole, 5111 Fixing part body, 5111a Long hole, 5111b Upper end part, 5112 Fixing part side part, 5112a Fixing piece, 5112b Insertion hole, 5112c Fixing screw, 5121 First part, 5122 Second part, 5211 First bending part, 5231 Second bending part, 5232 Third bending part, 5233 Fourth bending part, 5241 Fifth bending part.

Claims

1. A lighting fixture attached to a bar member that is a part to be attached, a holding part attached to the lighting fixture and holding the lighting fixture, an elastic part attached to the lighting fixture, extending downward from the holding part, and contacting the side surface of the bar member, a movable part that is movable up and down and is fixed to the lighting fixture in a state of being pushed downward, comprising: The elastic part generates a pressing force that presses the bar member in a state of being elastically deformed by the movable part pushed downward. A lighting device.

2. The elastic part has a deformed part extending downward from the holding part, and a tip part that bends from the deformed part and extends in a direction away from the lighting fixture, and has: In a state where the movable part is pushed downward, the deformed part moves in a direction away from the lighting fixture, and the tip part presses the side surface of the bar member. The lighting device according to Claim 1.

3. The lighting fixture has a long-shaped fixture body, a pair of the elastic parts are provided at both ends in the short side direction of the fixture body, the movable part extends across the short side direction of the fixture body, and at both ends of the movable part, each of the pair of elastic parts is elastically deformed. The lighting device according to Claim 1 or Claim 2.

4. The holding part has a locking part locked to the upper part of the bar member, extends upward along the lighting fixture from the locking part, and has a long hole formed in the vertical direction. The holding part is fixed to the lighting fixture by a fixing member inserted through the long hole, and comprises: The lighting device according to Claim 1 or Claim 2.

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