JP7550631B2 - Fixing mechanism - Google Patents

Description

The present invention relates to a fixing mechanism.

There is a known technology for holding rails on which control objects such as lighting devices and surveillance cameras are attached to a fixing device provided on a wall or ceiling.

JP 2008-108653 A JP 2019-040826 A

The rail held by the fixing device may be subjected to forces associated with the movement or deformation of the object being operated, causing the rail to tilt or deform, or even to fall off the fixing device. In order to improve the holding strength between the fixing device and the rail, the processing costs for the rail may be high.

In one aspect, the objective is to provide a fixing mechanism that can improve stability.

In one aspect, the fixing mechanism includes a rail on which an object to be operated is attached, a fixing frame fixed to any one of a wall surface, a ceiling surface, and a floor surface, and a holding member for holding the rail on the fixing frame. The fixing frame has a recess for engaging with the holding member formed in a first direction in which the rail extends. The holding member is detachably fixed to an end of the rail in the first direction. The holding member includes a first holding member detachably fixed to a first end of the rail in the first direction and having a pair of protruding portions formed symmetrically in a second direction intersecting the first direction, protruding in a direction from the first end to a second end in the first direction, and a second holding member detachably fixed to a second end of the rail opposite the first end in the first direction and having a protrusion extending in the second direction.

According to one embodiment, stability can be improved.

FIG. 1 is a diagram illustrating an example of a lighting system according to a first embodiment. FIG. 2 is an exploded perspective view illustrating an example of a fixing mechanism according to the first embodiment. FIG. 3A is a perspective view illustrating an example of a procedure for attaching the rail to the fixed frame in the first embodiment. FIG. 3B is a perspective view illustrating an example of a procedure for attaching the rail to the fixed frame in the first embodiment. FIG. 4 is a perspective view illustrating an example of a first holding member in the first embodiment. FIG. 5 is a perspective view illustrating an example of the second holding member in the first embodiment. FIG. 6 is a perspective view showing an example of a fixed frame to which a rail is attached in the first embodiment. FIG. 7 is a top view showing an example of a fixed frame to which a rail is attached in the first embodiment. FIG. 8 is a cross-sectional view showing an example of a fixed frame to which a rail is attached in the first embodiment. FIG. 9 is a plan view illustrating an example of the lighting device attached to the rail in the first embodiment. FIG. 10 is a perspective view illustrating an example of the lighting device according to the first embodiment. FIG. 11 is a perspective view illustrating an example of a slider according to the first embodiment. FIG. 12A is an enlarged perspective view showing an example of a hook portion of the slider in the first embodiment. FIG. 12B is an enlarged perspective view showing an example of a hook portion of the slider in the first embodiment. FIG. 13 is a cross-sectional view illustrating an example of a lighting device attached to a rail in the first embodiment. FIG. 14 is an enlarged perspective view illustrating an example of the lighting device according to the first embodiment. FIG. 15 is a cross-sectional view illustrating an example of a lighting device attached to a rail in the first embodiment. FIG. 16A is an enlarged cross-sectional view showing an example of a lighting device attached to a rail in the first embodiment. FIG. 16B is an enlarged cross-sectional view showing an example of the lighting device attached to the rail in the first embodiment. FIG. 17 is a perspective view showing an example of the lighting device in which the cylinder portion and the lamp body are rotated in the first embodiment. FIG. 18A is an exploded perspective view of a tube portion in the first embodiment. FIG. FIG. 18B is an exploded perspective view of the tube portion in the first embodiment. FIG. 19 is a cross-sectional perspective view showing an example of a lamp body in which the locking mechanism according to the first embodiment is arranged. FIG. 20 is a perspective view showing an example of expansion and contraction of the tube portion in the first embodiment. FIG. 21 is a cross-sectional view showing an example of movement of the stopper in the first embodiment. FIG. 22A is an enlarged cross-sectional view showing an example of movement of a stopper in the first embodiment. FIG. 22B is an enlarged cross-sectional view showing an example of movement of the stopper in the first embodiment. FIG. 23 is an enlarged cross-sectional view illustrating an example of a tube portion in the first embodiment. FIG. 24 is a cross-sectional view illustrating an example of a tube portion in the first embodiment. FIG. 25 is an exploded perspective view illustrating an example of a cross section of the tube portion in the first embodiment. FIG. 26 is a cross-sectional view illustrating an example of a cylindrical portion from which a filter is removed in an embodiment. FIG. 27 is an enlarged perspective view showing an example of a lighting device including a leaf spring according to the first modified example. FIG. 28 is an enlarged cross-sectional view showing an example of an illumination device according to a first modified example. FIG. 29 is an enlarged perspective view showing an example of a lighting device including a leaf spring according to the second modified example. FIG. 30 is a perspective view showing an example of an illumination device according to the third modified example. FIG. 31A is an enlarged perspective view showing an example of a leaf spring in a third modified example. FIG. 31B is an enlarged perspective view showing an example of a leaf spring in the third modified example. FIG. 32 is a side view showing an example of an illumination device according to the third modified example. FIG. 33A is a perspective view showing an example of a slider in the third modified example. FIG. 33B is a perspective view showing an example of a slider in the third modified example. FIG. 34A is an enlarged perspective view showing an example of the positional relationship between a leaf spring and a slider in a third modified example. FIG. 34B is an enlarged perspective view showing an example of the positional relationship between the leaf spring and the slider in the third modified example. FIG. 34C is an enlarged perspective view showing an example of the positional relationship between the leaf spring and the slider in the third modified example. FIG. 35 is a perspective view showing an example of an illumination device according to the fourth modified example. FIG. 36A is an enlarged perspective view showing an example of a lighting device before a power feed magnet is displaced in a fourth modified example. FIG. 36B is an enlarged perspective view showing an example of a lighting device in which the power supply magnet is displaced in the fourth modified example. FIG. 37A is a cross-sectional view showing an example of displacement of a magnet in the fourth modified example. FIG. 37B is a cross-sectional view showing an example of displacement of the magnet in the fourth modified example. FIG. 38 is a perspective view showing an example of an illumination device according to the fifth modified example.

Below, an embodiment of the fixing mechanism disclosed in the present application will be described in detail with reference to the drawings. Note that the dimensional relationships and ratios of each element in the drawings may differ from reality. The drawings may also include parts with different dimensional relationships and ratios. To make the explanation easier to understand, each drawing may show a coordinate system in which the direction toward the ceiling CL, which will be described later, is the positive Y-axis direction, and the direction in which the rail 20 extends is the positive X-axis direction.

First, the lighting system in this embodiment will be described with reference to FIG. 1. FIG. 1 is a diagram showing an example of a lighting system in the first embodiment. As shown in FIG. 1, the lighting system 1 in this embodiment includes a fixed frame 10, a rail 20, a first holding member 30, a second holding member 40, a power supply unit 50, and a lighting device 3. The lighting device 3 includes a main body unit 60, a tube unit 70, a light body 71, and a connecting unit 79. As shown in FIG. 1, electronic devices to be operated, such as the lighting device 3, are attached to the rail 20.

The fixed frame 10 is a member that fixes the rail 20 to a ceiling, a wall surface, a floor surface, etc. As shown in Figs. 1 and 2, the rail 20 to which the first holding member 30 and the second holding member 40 are attached is fixed to the fixed frame 10. Fig. 2 is an exploded perspective view showing an example of the fixing mechanism in the first embodiment. In the following, the fixing mechanism 2 is considered to include the fixed frame 10, the rail 20, the first holding member 30, and the second holding member 40.

As shown in FIG. 2, the fixed frame 10 includes a top plate 11, a pair of side walls 12, a notch 13, an engagement groove 14, a protrusion 15, an opening 16, and a number of tapping screws 19. The top plate 11 and the pair of side walls 12 of the fixed frame 10 are formed by bending a metal plate such as stainless steel. In this case, the pair of side walls 12 are continuous with the top plate 11 and face each other. In this embodiment, the fixed frame 10 is fixed to the ceiling CL by the multiple tapping screws 19 with the top plate 11 facing the ceiling CL.

The cutout portion 13 and the engagement groove 14 are formed symmetrically on each of the pair of side walls 12. The cutout portion 13 includes a portion 17 cut in the positive direction of the Y axis from the end edge of the pair of side walls 12 on the negative side of the Y axis, and a portion 18 cut out from portion 17 toward the negative side of the X axis. The cutout portion 13 is formed, for example, on the negative side of the X axis from the center of the pair of side walls 12 in the X axis. The engagement groove 14 includes a portion cut out in the negative direction of the X axis from the end edge of the pair of side walls 12 on the positive side of the X axis.

The protrusion 15 and the opening 16 are formed in the top plate 11. The opening 16 is formed, for example, in a position close to the cutout portion 13 in the X-axis direction. The protrusion 15 is formed continuous with the opening 16. The protrusion 15 is formed, for example, by cutting the portion of the top plate 11 corresponding to the opening 16, bending it toward the negative Y-axis direction, and then bending it again toward the positive X-axis direction.

Figures 3A and 3B are perspective views showing an example of a procedure for attaching the rail to the fixed frame in the first embodiment. As shown in Figures 2 and 3A, the rail 20 includes a pair of side walls 21, a pair of power supply rails 22a and 22b, a pair of first screw holes 23, a pair of second screw holes 24, a top plate 25, and end portions 27 and 28. For example, one of the power supply rails 22a and 22b corresponds to a positive pole, and the other corresponds to a negative pole.

The pair of side walls 21 are continuous with the top plate 25 and face each other. In this embodiment, the pair of side walls 21 and the top plate 25 are formed so as not to have any irregularities or holes. The pair of power supply rails 22a and 22b are formed from a conductive magnetic material such as iron.

The pair of first screw holes 23 and the pair of second screw holes 24 are formed in the ends 27 and 28 of the power supply rails 22a and 22b, respectively. The pair of first screw holes 23 are formed in the end faces of the power supply rails 22a and 22b on the negative side of the X-axis. The pair of second screw holes 24 are formed in the end faces of the power supply rails 22a and 22b on the positive side of the X-axis. The pair of first screw holes 23 is fixed to the first holding member 30 shown in FIG. 3A, and the pair of second screw holes 24 is fixed to the second holding member 40 shown in FIG. 3A.

As shown in FIG. 2, the first retaining member 30 is fixed to a pair of first screw holes 23 of the rail 20 by a pair of screws 39. At this time, an insulating sheet 38 is sandwiched between the first retaining member 30 and the end face of the rail 20 on the negative side of the X-axis. In addition, the second retaining member 40 is fixed to a pair of second screw holes 24 of the rail 20 by a pair of screws 49. At this time, an insulating sheet 48 is sandwiched between the second retaining member 40 and the end face of the rail 20 on the positive side of the X-axis.

Figure 4 is a perspective view showing an example of a first holding member in the first embodiment. The first holding member 30 has a bottom surface 31, a pair of screw holes 32, a pair of protrusions 33 and 34, and holes 35 and 36. The first holding member 30 is formed of a metal such as stainless steel.

2 are inserted into the pair of screw holes 32 and fixed to the pair of first screw holes 23 of the rail 20. The hole portion 35 is formed on the Y-axis positive side of the pair of screw holes 32, preferably at approximately the same position as the pair of protrusions 33 and 34 in the Y-axis direction. The protrusion 15 shown in FIG. 2 is inserted into the hole portion 35. The power supply unit 50 shown in FIG. 1 and FIG. 2 is inserted into the hole portion 36. The power supply unit 50 receives power via, for example, wiring 51. The power supply unit 50 supplies power to the power supply rails 22a and 22b by connecting to the power supply rails 22a and 22b via the hole portion 36. Note that the power supply unit 50 is not shown in FIG. 3A and FIG. 3B.

The pair of protrusions 33 and 34 extend from the bottom surface 31 in the positive direction of the X-axis. The pair of protrusions 33 and 34 are continuous with the bottom surface 31 and face each other. The pair of protrusions 33 and 34 are formed, for example, by bending a thin metal plate. As a result, the pair of protrusions 33 and 34 elastically deform in the direction of the arrow shown in FIG. 4.

The protruding portion 33 further includes a pressing portion 33a that protrudes in the negative direction of the Z axis. The pressing portion 33a is formed, for example, by further bending the protruding portion 33. At that time, it is desirable that the pressing portion 33a does not deform relative to the protruding portion 33. Similarly, the protruding portion 34 further includes a pressing portion 34b that protrudes in the positive direction of the Z axis.

In this embodiment, the pair of protrusions 33 and 34 are formed so that the width W2 in the Z-axis direction between the pair of protrusions 33 and 34 shown in FIG. 4 is larger than the width W1 in the Z-axis direction of the fixed frame 10 shown in FIG. 3A. In this case, the pair of protrusions 33 and 34 are deformed so that the width W2 becomes smaller than the width W1 when a force is applied to the pressing parts 33a and 34b in the direction of the arrow shown in FIG. 4. Also, when the force pressing in the direction of the arrow shown in FIG. 4 is removed, the pressing parts 33a and 34b protrude outward in the Z-axis direction from the cutout part 13 of the fixed frame 10. At this time, the pressing parts 33a and 34b become hooks for the fixed frame 10, suppressing the movement of the fixed frame 10 in the positive direction of the X-axis. This prevents the protrusion 15 of the fixed frame 10 from coming off the hole 35 of the first holding member 30.

Figure 5 is a perspective view showing an example of the second holding member in the first embodiment. The second holding member 40 has a main surface 41, a pair of screw holes 42, and a pair of protrusions 43 and 44. The second holding member 40 is formed of a metal such as aluminum.

The pair of screw holes 42 are formed in the main surface 41 of the second holding member 40. A pair of screws 49 shown in FIG. 2 are inserted into the pair of screw holes 42 and fixed to the pair of second screw holes 24 of the rail 20. The pair of protrusions 43 and 44 each extend in the Z-axis direction from the main surface 41 of the second holding member 40. In this embodiment, the pair of protrusions 43 and 44 are formed so that the width W3 in the Z-axis direction between the pair of protrusions 43 and 44 shown in FIG. 5 is greater than the width W1 in the Z-axis direction of the fixed frame 10 shown in FIG. 3A.

In this embodiment, the rail 20 is attached to the fixed frame 10 from the negative side of the X-axis, as shown in Figures 3A and 3B. The rail 20 is attached so that the pressing portions 33a and 34b of the first holding member 30 fixed to the rail 20 are inserted into the portion 17 of the cutout portion 13 of the fixed frame 10.

At that time, a force is applied to the pressing portions 33a and 34b of the pair of protrusions 33 and 34 in the direction of the arrows shown in FIG. 4, so that the width W2 becomes smaller than the width W1. As a result, as shown in FIG. 3B, the pair of protrusions 33 and 34, excluding at least the pressing portions 33a and 34b, are inserted between the pair of side walls 12 of the fixed frame 10.

In addition, the protrusions 43 and 44 of the second retaining member 40, which is fixed to the rail 20, are located on the positive X-axis side of the end edges of the pair of side walls 12 of the fixed frame 10 on the positive X-axis side, as shown in FIG. 3B.

The rail 20 to which the first holding member 30 and the second holding member 40 are fixed is fixed to the fixed frame 10 by moving in the negative direction of the X-axis relative to the fixed frame 10. FIG. 6 is a perspective view showing an example of a fixed frame to which a rail is attached in the first embodiment. When attached to the fixed frame 10, the pressing portion 34b of the first holding member 30 fixed to the rail 20 moves from the position of part 17 of the fixed frame 10 as shown in FIG. 3B to the position of part 17 of the fixed frame 10 as shown in FIG. 6. Note that other parts of the first holding member 30, including the protruding portion 34 except for the pressing portion 34b, are not visible in FIG. 6.

When attached to the fixed frame 10, the protrusion 44 of the second holding member 40 fixed to the rail 20 engages with the engagement groove 14 of the fixed frame 10 as shown in FIG. 6. In this case, the main surface 41 of the second holding member 40 and the end edges on the positive side of the X-axis of the pair of side walls 12 of the fixed frame 10 are approximately flush with each other.

Furthermore, the hole 35 of the first holding member 30 is inserted into the protrusion 15 of the fixed frame 10, as shown in Figures 7 and 8. Figure 7 is a top view showing an example of a fixed frame to which a rail is attached in the first embodiment. Figure 8 is a cross-sectional view showing an example of a fixed frame to which a rail is attached in the first embodiment. Figure 8 shows a cross-section taken along line A-A in Figure 7.

When removing the rail 20 from the fixed frame 10, the pressing portions 33a and 34b shown in FIG. 7 are pressed in the direction of the arrow (Z-axis direction) and the rail 20 is moved in the positive direction of the X-axis. Then, when the rail 20 has moved to the position shown in FIG. 3B, the rail 20 can be removed from the fixed frame 10 by moving the rail 20 in the negative direction of the Y-axis.

In this manner, in this embodiment, the rail 20 to which the first holding member 30 and the second holding member 40 are fixed is fixed to the fixed frame 10 by the protrusions 33 and 34 and the pressing portions 33a and 34b of the first holding member 30 and the protrusions 43 and 44 of the second holding member 40. Furthermore, the protrusions 15 of the fixed frame 10 are inserted into the holes 35 of the first holding member 30. As a result, the rail 20 is firmly fixed to the fixed frame 10, and wobbling and falling off of the rail 20 are suppressed. The rail 20 to which the first holding member 30 and the second holding member 40 are attached does not need to be provided with unevenness or holes for fixing the rail 20 to the fixed frame 10, and it is also easy to make the rail 20, the first holding member 30, and the second holding member 40 the same color, improving the freedom and design of the rail 20.

As described above, the fixing mechanism 2 in this embodiment includes the rail 20 to which the operation target 3 is attached, the fixed frame 10 fixed to any one of a wall surface, a ceiling surface, and a floor surface, and the holding members 30, 40 that hold the rail 20 to the fixed frame 10. The fixed frame 10 has a recess 13 that engages with the holding member 30 formed in a first direction in which the rail extends. The holding members 30, 40 are detachably fixed to the first end 27 of the rail 20 in the first direction. The holding member 30 is detachably fixed to the first end 27 of the rail 20 in the first direction, and includes a pair of protrusions 33, 34 formed symmetrically in a second direction intersecting the first direction, protruding from the first end 27 in the first direction toward the second end 28 opposite the first end 27. The holding member 40 is removably fixed to the second end 28 of the rail in the first direction and has protrusions 43, 44 that extend in the second direction. This configuration improves stability when fixing the rail 20 to the fixed frame 10.

A main body 60 of the lighting device 3 as shown in FIG. 1 is attached to the rail 20 fixed to the fixed frame 10 in this manner. FIG. 9 is a plan view showing an example of a lighting device attached to a rail in the first embodiment. FIG. 9 shows the lighting system 1 of FIG. 1 as viewed from the negative Y-axis direction. As shown in FIG. 9, the rail 20 is formed with flanges 26a and 26b extending inward in the Z-axis direction from a pair of side walls 21.

Figure 10 is a perspective view showing an example of a lighting device in the first embodiment. Figure 10 shows the lighting device 3 as viewed from the Y-axis positive side, i.e., the side attached to the rail 20. The main body 60 of the lighting device 3 is formed of, for example, resin. As shown in Figure 10, the light body 71 of the lighting device 3 is rotatably connected to the main body 60 via a connecting portion 79. The main body 60 also includes a pair of power supply magnets 61a and 61b, a spare magnet 62, screws 63a and 63b, hook portions 64a, 64b, 65a, 65b, and side walls 66a and 66b. A slider 90 is inserted into the main body 60 from the X-axis positive side. The power supply magnets 61a and 61b are an example of magnets.

When the lighting device 3 is attached to the rail 20, the pair of power supply magnets 61a and 61b are attached to the pair of power supply rails 22a and 22b, respectively. As a result, the pair of power supply magnets 61a and 61b attach the main body 60 of the lighting device 3 to the rail 20 and supply power from the power supply rails 22a and 22b to the main body 60. The spare magnet 62 is attached to the power supply rail 22b, but does not supply power from the power supply rail 22b to the main body 60. Coil springs 81a and 81b, which will be described later, are attached to the screws 63a and 63b.

The hook portions 64a, 64b, 65a, and 65b are formed on the side walls 66a and 66b of the main body 60, respectively, and protrude outward in the Z-axis direction beyond the side walls 66a and 66b. The hook portions 64a, 64b, 65a, and 65b extend outward in the Z-axis direction beyond the flange portions 26a and 26b of the rail 20 shown in FIG. 9. This prevents the hook portions 64a, 64b, 65a, and 65b from coming off the rail 20 when the lighting device 3 is attached to the rail 20.

The hook portions 64a, 64b, 65a, and 65b have a relatively high degree of elasticity compared to the side walls 66a and 66b. Therefore, when the lighting device 3 is attached to the rail 20, the hook portions 64a, 64b, 65a, and 65b elastically deform inward in the Z-axis direction, thereby attaching the lighting device 3 to the rail 20.

When the slider 90 is inserted into the main body 60, the slider 90 prevents the hooks 64a, 64b, 65a, and 65b from deforming inward in the Z-axis direction. In this case, when the lighting device 3 shifts in the negative Y-axis direction, the hooks 64a, 64b, 65a, and 65b catch on the flanges 26a and 26b formed on the rail 20, preventing the lighting device 3 from falling off the rail 20.

Figure 11 is a perspective view showing an example of a slider in the first embodiment. As shown in Figure 11, protrusions 91a and 92a are formed on one end edge of the slider 90 in the Z-axis direction. Protrusions 91b and 92b are also formed on the opposite end edge of the slider 90 in the Z-axis direction. When the slider 90 is inserted into the main body 60, the protrusions 92a and 92b of the slider 90 fix the hook portions 65a and 65b from the inside in the Z-axis direction. Similarly, the protrusions 91a and 91b of the slider 90 fix the hook portions 64a and 64b from the inside in the Z-axis direction when the slider 90 is inserted into the main body 60.

Figures 12A and 12B are enlarged perspective views showing an example of the hook portion of the slider in the first embodiment. Figure 12B shows the slider 90 fully inserted into the main body 60, and Figure 12A shows the slider 90 partially pulled out in the positive X-axis direction. As shown in Figures 12A and 12B, the position of the protrusion 91a of the slider 90 in the Z-axis direction is approximately the same as the position of the inner surface 64a1 of the hook portion 64a in the Z-axis direction.

In the state shown in FIG. 12A, the protrusion 91a of the slider 90 is not in contact with the surface 64a1 of the hook portion 64a, so the hook portion 64a elastically deforms inward in the Z-axis direction. On the other hand, as shown in FIG. 12B, when the slider 90 is inserted into the main body 60, the protrusion 91a comes into contact with the surface 64a1 of the hook portion 64a. This suppresses the inward elastic deformation of the hook portion 64a in the Z-axis direction.

Figure 13 is a cross-sectional view showing an example of a lighting device attached to a rail in the first embodiment. Figure 13 shows a cross-section taken along line CC in Figure 9. As shown in Figure 13, the hook portion 64a of the main body 60 is located on the positive Z-axis side of the end of the flange portion 26a of the rail 20. The hook portion 64b of the main body 60 is located on the negative Z-axis side of the end of the flange portion 26b of the rail 20. In other words, when the hook portions 64a and 64b are fixed by the projections 91a and 91b of the slider 90, even when an external force acts on the lighting device 3 in the negative Y-axis direction, the hook portions 64a, 64b, 65a, and 65b are caught by the flange portions 26a and 26b, thereby preventing the lighting device 3 from falling off the rail 20. Furthermore, when removing the lighting device 3 from the rail 20, the slider 90 is partially pulled out from the main body 60 as shown in FIG. 12A, allowing the hook portions 64a and 64b to be elastically deformed. This allows the lighting device 3 to be easily removed from the rail 20.

Even if the lighting device 3 does not fall off the rail 20, if the connection between the power supply rails 22a and 22b of the rail 20 and the power supply magnets 61a and 61b of the main body 60 is momentarily lost, this can cause malfunctions such as the lighting device 3 going out or blinking. Therefore, in this embodiment, in addition to the power supply magnets 61a and 61b, conductive coil springs 81a and 81b are provided in the main body 60 of the lighting device 3 to suppress malfunctions of the lighting device 3.

Fig. 14 is an enlarged perspective view showing an example of a lighting device in the first embodiment. Fig. 14 is an enlarged view of the portion shown in frame F1 in Fig. 10. As shown in Fig. 14, coil springs 81a and 81b are attached to the screws 63a and 63b of the main body 60, respectively. The coil springs 81a and 81b are formed of a conductive metal such as copper. The coil springs 81a and 81b bias the power supply rails 22a and 22b in a direction perpendicular to the power supply rails 22a and 22b.

Figure 15 is a cross-sectional view showing an example of a lighting device mounted on a rail in the first embodiment. Figure 15 shows a cross-section taken along line B-B in Figure 9. Figure 16A is an enlarged cross-sectional view showing an example of a lighting device mounted on a rail in the first embodiment. Figure 16A is an enlarged view of the portion shown in frame F2 in Figure 15. As shown in Figures 15 and 16A, the main body 60 of the lighting device 3 and the power supply rail 22b are in contact with each other not only through the power supply magnet 61b and the spare magnet 62, but also through the coil spring 81b. The coil spring 81a is also a contact point with the power supply rail 22a. In this case, the coil spring 81b is compressed in the Y-axis direction by the force of the power supply magnet 61b and the spare magnet 62 attracting the power supply rail 22b.

16B is an enlarged cross-sectional view showing another example of the lighting device 3 attached to the rail in the first embodiment. FIG. 16B shows a state in which an external force is applied to the lighting device 3 shown in FIG. 16A, causing the main body 60 of the lighting device 3 to tilt toward the negative Y-axis direction and the positive X-axis direction. In the example shown in FIG. 16B, the tilt of the main body 60 causes a gap G1 between the power supply magnet 61b and the power supply rail 22b, and the contact at the portion C0 of FIG. 16A is lost. In this case, even when the spare magnet 62 is in contact with the power supply rail 22b, the lighting device 3 may turn off or blink. However, in this embodiment, the contact between the coil spring 81b and the power supply rail 22b at the portion C1 of FIG. 16 is maintained by the force of the coil spring 81b compressed in the Y-axis direction trying to restore itself. As a result, the power supply to the main body 60 is maintained, and malfunctions such as turning off or blinking of the lighting device 3 are suppressed.

As described above, the electronic device 3 in this embodiment includes a magnet 61a that is attached to the rail 22a and receives power from the rail 22a, and a conductive elastic body 81a that biases the rail 22a in a first direction (positive Y-axis direction) perpendicular to the rail 22a. The electronic device 3 is disposed at a position spaced apart from the magnet 61a in the second direction (positive X-axis direction) in which the rail 22a extends, and is compressed in the second direction relative to the rail 22a by the force of the magnet 61a attaching to the rail 22a. With this configuration, a stable power supply to the electronic device 3 can be maintained.

The lighting device 3 attached to the rail 20 can change the direction of illumination by, for example, changing the direction of the light body 71 of the lighting device 3. In this embodiment, the light body 71 of the lighting device 3 is pivotally supported by a connecting portion 79 as shown in Figs. 9 and 10, and can be rotated, for example, from the direction shown in Figs. 9 and 10 (negative Y-axis direction) to the direction shown in Fig. 17 (negative Y-axis direction and positive X-axis direction). Fig. 17 is a perspective view showing an example of a lighting device in which the tube portion and light body in the first embodiment have been rotated. In the example shown in Figs. 9, 10, and 17, the light body 71 can be rotated from the positive X-axis direction to the negative X-axis direction around the connecting portion 79.

In addition, in order to control the light distribution of the illumination, the tube portion 70 attached to the lamp body 71 of the lighting device 3 may be expanded or contracted in the Y-axis direction. The tube portion 70 has an internal thread 78 formed on the inner circumference, for example, and its position relative to the lamp body 71 changes when it rotates in the circumferential direction (the direction shown by the arrow in FIG. 17). In this case, when the tube portion 70 rotates in the expanding direction, the tube portion 70 may fall off the lamp body 71.

Therefore, the tubular portion 70 and the light body 71 of the lighting device 3 in this embodiment are provided with a locking mechanism for limiting the range of rotation of the tubular portion 70 in the direction of extension and contraction. Figures 18A and 18B are exploded perspective views of the tubular portion in the first embodiment. As shown in Figure 18A, the tubular portion 70 of the lighting device 3 in this embodiment is attached to the light body 71. The tubular portion 70 is made of a metal such as aluminum. The light body 71 is made of a metal such as aluminum. In this embodiment, the light source A2, such as an LED (Light Emitting Diode), is mounted on the substrate A1. The substrate A1 is disposed on the light body 71.

For example, internal threads 74 and 78 are formed on the inner peripheral surface of the tubular portion 70. An external thread 72 is formed on the outer peripheral surface of the lamp body 71. The external thread 72 is screwed into the internal thread 78 formed on the tubular portion 70, thereby fixing the tubular portion 70 to the lamp body 71. As shown in FIG. 18B, a recess 75 constituting a locking mechanism B0 is further formed on the inner peripheral surface of the tubular portion 70 on which the internal thread 78 is formed. Note that the lamp body 71 is an example of a main body.

In addition, an opening 73 is formed in the outer periphery of the light body 71 where the external thread 72 is formed. FIG. 19 is a cross-sectional perspective view showing an example of a light body in which the locking mechanism in the first embodiment is arranged. FIG. 19 shows a cross-sectional perspective view of the light body 71 in FIG. 18A at section S1. The portion shown by the dashed line in FIG. 19 corresponds to the holder B1, the leaf spring B2, the swing shaft B3, the roller B4, the stopper B5, and the pressing part B6 that constitute the locking mechanism B0. As shown in FIG. 19, an opening 73 is formed in the outer periphery of the light body 71. The locking mechanism B0 in this embodiment includes a recess 75 formed in the tube part 70 and the holder B1 to the pressing part B6 that are arranged in the light body 71. In this embodiment, the holder B1 to the pressing part B6 that constitute the locking mechanism B0 are arranged near the opening 73 of the light body 71 as shown in FIG. 19.

The holder B1 holds the roller B4. The holder B1 is made of, for example, resin. The leaf spring B2 urges the pressing portion B6 outward in the radial direction of the light body 71. In the example shown in FIG. 19, the leaf spring B2 urges the pressing portion B6 toward the negative Z-axis direction. The swing shaft B3 is fitted into, for example, the light body 71, and supports the holder B1 so that it can swing. The swing shaft B3 is made of, for example, a metal such as stainless steel. The holder B1 is an example of a member that holds a rotating member, and the leaf spring B2 is an example of a biasing portion.

The roller B4 is exposed through the opening 73 radially outward from the external thread 72 formed on the outer peripheral surface of the lamp body 71. The roller B4 is in rotatable contact with the inner peripheral surface of the tube portion 70. In this embodiment, the roller B4 is pressed against the inner peripheral surface of the tube portion 70 by the pressing portion B6 being biased. The roller B4 is made of, for example, nickel-plated brass. The roller B4 is an example of a rotating member.

As will be explained later, the stopper B5 catches on the recess 75 of the tube portion 70, thereby preventing the tube portion 70 from rotating. The pressing portion B6 is biased by the leaf spring B2, and presses the holder B1 holding the roller B4 radially outward. The frictional force generated between the roller B4 pressed radially outward and the internal thread 78 of the tube portion 70 suppresses wobbling of the tube portion 70. The stopper B5 is an example of a protrusion.

20 is a perspective view showing an example of the extension and contraction of the tube portion in the first embodiment. FIG. 20(a) shows the state before the tube portion 70 is extended, and FIG. 20(b) shows the state when the tube portion 70 is fully extended. In the state shown in FIG. 20(a), the rotation that extends the tube portion 70 is not locked, and in the state shown in FIG. 20(b), the rotation that extends the tube portion 70 is locked. In addition, in the Y-axis direction, the position of the lamp body 71 on line E-E in FIG. 20(a) and the position of the lamp body 71 on line F-F in FIG. 20(b) are both approximately the same as the position shown in cross section S1 of the lamp body 71 (the position shown in FIG. 19). That is, in the example shown in FIG. 20, the position of the lamp body 71 shown in FIG. 20(b) has not changed from the position of the lamp body 71 shown in FIG. 20(a), and only the position of the tube portion 70 in the Y-axis direction has changed.

Figure 21 is a cross-sectional view showing an example of the movement of the stopper in the first embodiment. (a) of Figure 21 shows a cross-section taken along line E-E in Figure 20, and (b) of Figure 21 shows a cross-section taken along line F-F in Figure 20. That is, (a) of Figure 21 shows a state in which the rotation that extends the tube portion 70 is not locked, which corresponds to (a) of Figure 20, and (b) of Figure 21 shows a state in which the rotation that extends the tube portion 70 is locked, which corresponds to (b) of Figure 20.

22A and 22B are enlarged cross-sectional views showing an example of the movement of the stopper in the first embodiment. FIG. 22A is an enlarged view of the portion related to the locking mechanism B0 when the rotation that extends the tube portion 70 is not locked, i.e., the portion shown in frame F3 in FIG. 21(a). FIG. 22B is an enlarged view of the portion related to the locking mechanism B0 when the rotation that extends the tube portion 70 is locked, i.e., the portion shown in frame F4 in FIG. 21(b).

22A, in this embodiment, the position X1 of the swing axis B3 in the X-axis direction is located on the X-axis positive side of the center X4 of the holder B1 in the X-axis direction shown in FIG. 22A. On the other hand, the position X6 of the pressing part B6 in the X-axis direction is located on the X-axis negative side of the center X4 of the holder B1 in the X-axis direction shown in FIG. 22A. In this case, when the pressing part B6 is pressed by the leaf spring B2, the holder B1 swings in the direction indicated by the arrow R1 around the swing axis B3 as shown in FIG. 22B. As a result, as shown in FIG. 22B, the corner part B9 of the holder B1 swings in the direction indicated by the arrow V2 (Z-axis positive direction), while the stopper B5 swings in the direction indicated by the arrow V1 (Z-axis negative direction). Note that, as shown in FIG. 22A, the roller B4 is disposed, for example, near the center X4 of the holder B1 in the X-axis direction.

Figure 23 is an enlarged cross-sectional view showing an example of the tubular portion in the first embodiment. Figure 23 shows a cross-section taken along line F-F in Figure 20. As shown in Figure 23, the recess 75 formed on the inner peripheral surface of the tubular portion 70 includes a curved portion 7A and a stepped portion 7B. The curved portion 7A is an example of the first portion, and the stepped portion 7B is an example of the second portion.

The curved portion 7A is formed so as to smoothly connect the intermediate portion 7C of the recess 75 and the portion 7D adjacent to the curved portion 7A on the inner circumferential surface of the tubular portion 70. On the other hand, the stepped portion 7B is formed so as to discontinuously connect the intermediate portion 7C of the recess 75 and the portion 7E adjacent to the stepped portion 7B on the inner circumferential surface of the tubular portion 70. The curved portion 7A and the stepped portion 7B are formed on opposite sides of the intermediate portion 7C in the circumferential direction.

In this case, when the roller B4 rotates in the direction indicated by the arrow R3, the corner B9, which swings in the direction indicated by the arrow V2 in FIG. 22B, does not come into contact with the curved portion 7A of the tube portion 70 or the adjacent portion 7D, so that the tube portion 70 rotates smoothly relative to the light body 71. On the other hand, when the roller B4 rotates in the direction indicated by the arrow R2, the stopper B5, which swings in the direction indicated by the arrow V1, gets caught on the stepped portion 7B of the recess 75, so that the rotation of the tube portion 70 relative to the light body 71 is prevented. In other words, the locking mechanism B0, which includes the recess 75 and the roller B4, prevents the tube portion 70 from rotating.

As described above, the electronic device 3 in this embodiment includes a main body 71 having an external thread 72 formed on its outer peripheral surface, and a tubular portion 70 having an internal thread 78 formed on its inner peripheral surface that screws into the external thread 72 of the main body 71. An opening 73 is formed on the outer peripheral surface of the main body 71. The main body 71 further includes a rotating member B4 that is exposed radially outward from the opening 73 and rotatably contacts the inner peripheral surface of the tubular portion 70. A recess 75 that suppresses rotation of the rotating member B4 is further formed on the inner peripheral surface of the tubular portion 70. With this configuration, the tubular portion can be stably held.

The light distribution control by the lighting device 3 can also be achieved by attaching a lens or a filter to the tube portion 70 or the lamp body 71. FIG. 24 is a cross-sectional view showing an example of the tube portion in the first embodiment. FIG. 25 is an exploded perspective view showing an example of the cross-section of the tube portion in the first embodiment. FIG. 24 shows a cross-section cut along line D-D in FIG. 9. As shown in FIGS. 24 and 25, the tube portion 70 in this embodiment is further formed with a flange portion 76. In addition, the lens A4 and the lens holder A3 are attached to the tube portion 70. For example, an external thread is formed on the lens holder A3. In this case, the lens holder A3 is attached to the tube portion 70 by screwing it into the internal thread 78 formed on the tube portion 70. In this embodiment, the lens A4 is attached to the tube portion 70 by being sandwiched between the lens holder A3 and the flange portion 76 of the tube portion 70 in the Y-axis direction.

As shown in Figures 24 and 25, a hood A5 and a filter A6 are further attached to the tubular portion 70 in this embodiment. For example, an external thread is formed on the hood A5. In this case, the hood A5 is attached to the tubular portion 70 by screwing it into an internal thread 74 formed on the tubular portion 70. In this embodiment, the filter A6 is attached to the tubular portion 70 by being sandwiched between the flange portion 76 of the tubular portion 70 and the hood A5 in the Y-axis direction.

According to the configuration described above, the lenses, filters, etc. used to control the light distribution of the lighting device 3 can be easily attached to and detached from the lighting device 3. For example, when replacing or removing the filter A6, it is sufficient to remove the hood A5 screwed to the tube portion 70, as shown in the exploded view of FIG. 25. FIG. 26 is a cross-sectional view showing an example of a tube portion from which a filter has been removed in an embodiment. Furthermore, according to this configuration, the lens A4 is sandwiched between the lens holder A3 and the flange portion 76, and the filter A6 is sandwiched between the flange portion 76 and the hood A5, so that wobbling of the attached lens, filter, etc. can be suppressed.

[Modification]
Although the configuration of this embodiment has been described above, the embodiment is not limited to this. For example, the leaf spring B2 in the lock mechanism B0 shown in Fig. 19 and Fig. 21 is an example of an elastic body that biases the pressing portion B6, and can be realized by other elastic members such as a coil spring or rubber. Also, a ball bearing or the like may be used instead of the roller B4.

Furthermore, the elastic body used in the configuration for maintaining the power supply described with reference to Figs. 14 to 16B is not limited to the coil springs 81a and 81b as shown in Fig. 14. For example, a conductive leaf spring may be used as the elastic body. Fig. 27 is an enlarged perspective view showing an example of a lighting device equipped with a leaf spring in the first modified example. The lighting device 4 in this modified example differs from the lighting device 3 shown in Fig. 14 in that it is equipped with leaf springs 82a and 82b shown in Fig. 27 instead of the coil springs 81a and 81b.

As shown in FIG. 27, the leaf springs 82a and 82b are attached to the main body 60, for example, by screws 63a and 63b, respectively. The leaf spring 82a has a first protrusion 83a and a second protrusion 84b. Similarly, the leaf spring 82b has a first protrusion 83b and a second protrusion 84b. The leaf springs 82a and 82b are formed of a conductive metal, for example, copper.

The leaf springs 82a and 82b are contact points with the power supply rails 22a and 22b, respectively, similar to the coil springs 81a and 81b. FIG. 28 is an enlarged cross-sectional view showing an example of a lighting device in the first modified example. FIG. 28 shows a cross section cut along line G-G in FIG. 27. When the lighting device 4 is attached to the rail 20, the first protrusion 83b and the second protrusion 84b of the leaf spring 82b shown in FIG. 28 are compressed in the negative Y-axis direction by the force of the power supply magnet 61b and the spare magnet 62 attracting the power supply rail 22b, similar to the coil spring 81b. For example, the first protrusion 83b and the second protrusion 84b protrude in the positive Y-axis direction by a height H1 from the power supply magnet 61b before the lighting device 4 is attached to the rail 20, but when the lighting device 4 is attached to the rail 20, they are compressed so that their height in the positive Y-axis direction becomes approximately the same as that of the power supply magnet 61b.

As shown in Figs. 14 to 16B, the biasing force of the coil springs 81a and 81b maintains contact between the lighting device 3 and the power supply rails 22a and 22b in the embodiment. However, if the biasing force is too large, it affects the attraction force between the lighting device 3 and the power supply rail 22b by the power supply magnet 61b and the spare magnet 62. Therefore, in this modified example, by using leaf springs 82a and 82b as shown in Fig. 28, it becomes easier to appropriately adjust the biasing force against the power supply rails 22a and 22b.

In addition, in FIG. 28, the configuration in which the leaf spring 82b has two protrusions 83b and 84b has been described, but the number of protrusions may be changed to adjust the biasing force. FIG. 29 is an enlarged perspective view showing an example of a lighting device equipped with a leaf spring in the second modified example. The lighting device 5 shown in FIG. 29 includes a leaf spring 85a equipped with a protrusion 86a and a leaf spring 85b equipped with a protrusion 86b. As shown in FIG. 29, the protrusions 86a and 86b may be arranged so as to be staggered in the X-axis direction. In this way, by changing the number of protrusions equipped on the leaf spring and the positions at which the protrusions are arranged, the biasing force of the leaf spring can be more appropriately adjusted.

As shown in FIG. 16B, when the contact between the power supply magnet 61b and the power supply rail 22b is lost, the biasing force required for the elastic body to maintain contact with the power supply rail 22b depends on the distance between the power supply magnet 61b and the elastic body. For example, as shown in FIG. 28, when the distance L1 between the power supply magnet 61b and the second protrusion 84b of the leaf spring 82b is increased, the biasing force required to maintain contact between the elastic body and the power supply rail 22b becomes smaller. When the distance L1 is increased, the amount of displacement of each elastic body when the power supply magnet 61a or 61b separates from the power supply rail 22a or 22b becomes smaller. In addition, the component force of the biasing force of the elastic body on the power supply magnet 61a and the spare magnet 62 also changes depending on the distance L1.

Therefore, as shown in Figure 30 and subsequent figures, a leaf spring may be used that increases the distance from the power supply magnet 61b to the protrusion. Figure 30 is a perspective view showing an example of a lighting device in the third modified example. As shown in Figure 30, the leaf springs 87a and 87b in this modified example are also attached to the main body 60 by, for example, screws 63a and 63b, respectively. The leaf springs 88a and 88b are also made of a conductive metal such as copper.

The leaf springs 87a and 88b are formed so that their length in the X-axis direction is greater than that of the other leaf springs shown in the other modified examples. The leaf springs 87a and 87b each have a protrusion 88a and 88b, and a tip 89a and 89b. In this modified example, the distance L2 from the power supply magnet 61b to the protrusion 88b is greater than the distance in the other embodiments and modified examples, as shown in FIG. 32. In this modified example, the distance L2 is preferably greater than 1/3 of the distance (magnet pitch) between the power supply magnet 61a and the spare magnet 62 in the positive X-axis direction of the lighting device 5, for example, in order to equalize the component forces of the power supply magnet 61a and the spare magnet 62. In addition, the distance L2 is preferably as close as possible to the length of the magnet pitch in the lighting device 5, that is, the position of the protrusion 88 at the tip of the elastic body is preferably closer to the spare magnet 62. This reduces the amount of displacement of the tip of the protrusion 88 in the Y-axis direction, reducing the load fluctuation at the contact point between the protrusion 88 and the power supply rail 22a or 22b. As a result, the fluctuation in the contact pressure of the protrusion 88 against the power supply rail 22a or 22b also decreases, allowing for a greater margin for ensuring electrical continuity in the power supply magnet 61a or 61b.

32 is a side view showing an example of a lighting device in the third modified example. As with the other modified examples, when the lighting device 6 is attached to the rail 20, the protrusion 88a of the leaf spring 87a shown in FIG. 32 is compressed in the negative Y-axis direction by the force of the power supply magnet 61a adsorbing to the power supply rail 22a. For example, in a state before the lighting device 6 is attached to the rail 20, the protrusion 88a protrudes in the positive Y-axis direction by a height H2 from the power supply magnet 61a as shown in FIG. 31A. Then, when the lighting device 4 is attached to the rail 20, the protrusion 88a is compressed so that its height in the positive Y-axis direction is approximately the same as that of the power supply magnet 61a as shown in FIG. 31B. That is, the leaf spring 87a and the protrusion 88a change from the state of 87a2 and 88a2 to the state of 87a1 and 88a1. FIGS. 31B and 31A are enlarged perspective views showing an example of a leaf spring in the third modified example. Figures 31B and 31A are enlarged views of the portion indicated by frame F5 in Figure 30.

As shown in FIG. 32, the height H2 between the power supply magnet 61a and the protrusion 88a in the state before the lighting device 6 in this modified example is attached to the rail 20 is smaller than the height H1 between the power supply magnet 61b and the protrusion 84b in the state before the lighting device 4 in the first modified example is attached to the rail 20 as shown in FIG. 28. In this way, by increasing the distance L2 between the power supply magnet 61a and the protrusion 88a, the amount of displacement of the protrusion 88a in the Y-axis direction can be reduced.

The protruding portion 88a of the leaf spring 87a protrudes, for example, from an opening 96a formed in the slider 95 toward the negative Y-axis direction. In this modified example, the tip portion 89a of the leaf spring 87a may be configured to contact the slider 95 in the Y-axis direction. Figures 33A and 33B are perspective views showing an example of a slider in the third modified example. As shown in Figures 33A and 33B, the slider 95 in this modified example differs from the slider 90 in the embodiment in that it includes openings 96a and 96b, moving portions 97a and 97b, and inhibiting portions 98a and 98b.

The moving portion 97a of the slider 95 is formed to be movable in the X-axis direction. When the protruding portion 88a of the leaf spring 87a protrudes from the opening 96a, the moving portion 97a moves in the positive direction of the X-axis, thereby sandwiching the protruding portion 88a between the moving portion 97a and the inhibiting portion 98a. In this case, the inhibiting portion 98a contacts the tip portion 89a of the leaf spring 87a from the positive side of the Y-axis. In this way, the inhibiting portion 98a inhibits the tip portion 89a from deforming or moving in the positive direction of the Y-axis.

34A to 34C are enlarged perspective views showing an example of the positional relationship between the leaf spring and the slider in the third modified example. As shown in FIG. 34A, the protruding portion 88a of the leaf spring 87a protrudes in the positive Y-axis direction from the opening 96a of the slider 95. As shown in FIG. 34B, the protruding portion 88a is compressed in the negative Y-axis direction, so that the protruding portion 88a changes from the state 88a2 to the state 88a1. When the moving portion 97a of the slider 95 moves in the negative X-axis direction, the protruding portion 88a is sandwiched between the moving portion 97a and the inhibiting portion 98a of the slider 95 as shown in FIG. 34C. In this case, the tip portion 89a of the leaf spring 87a shown in FIG. 34B is inhibited from deformation or movement in the positive Y-axis direction by the inhibiting portion 98a of the slider 95.

In this manner, in this modified example, even if a force in the positive Y-axis direction (a force that attempts to remove the leaf spring 87a from the main body 60) is applied to the leaf spring 87a, deformation of the leaf spring 87a and the protrusion 88a in the negative Y-axis direction is suppressed.

In addition, in the above embodiment and each modified example, a configuration using a conductive elastic body to maintain contact with the power supply rails 22a and 22b has been described, but this is not limited thereto, and a configuration in which the power supply magnets 61a and 61b are displaced may also be used. FIG. 35 is a perspective view showing an example of a lighting device in a fourth modified example. As shown in FIG. 35, the main body 60 of the lighting device 7 in this modified example includes a suspension D0a instead of the conductive elastic body in the embodiment and each modified example. The suspension D0a is formed of a conductive metal such as copper. The suspension D0a in this modified example is also attached to the main body 60 by, for example, a screw 63a. Note that, in the following, a configuration including a suspension D0a that holds the power supply magnet 61a will be described, but a configuration that further includes a suspension D0b that holds the power supply magnet 61a may also be used.

Figure 36A is an enlarged perspective view showing an example of a lighting device before the power supply magnet is displaced in the fourth modified example. Figure 37A is a cross-sectional view showing an example of the displacement of the magnet in the fourth modified example. Figure 36A is an enlarged view of the portion shown in frame F7 in Figure 35. Figure 37A shows a cross-section taken along line H-H in Figure 35. As shown in Figures 36A and 37A, the suspension D0a has an opening D1a, a tip portion D2a, and a side portion D3a.

In this modified example, the surface of the convex portion 61a1 of the power supply magnet 61a facing the positive Y-axis direction is in contact with the tip portion D2a of the suspension D0a. In addition, the main body portion 60 in this modified example is formed with a limiter 69 that suppresses the displacement of the suspension D0a in the positive Y-axis direction.

In this modified example, the power supply magnet 61a is arranged so that it can be displaced or rotated in the Y-axis direction while maintaining contact with the main body 60. For example, even if the lighting device 8 tilts or moves toward the negative Y-axis direction, the position of the power supply magnet 61a does not change due to the attractive force to the power supply rail 22a. In other words, when the lighting device 8 tilts or moves, the power supply magnet 61a is displaced relative to the lighting device 8.

Figure 36B is an enlarged perspective view showing an example of a lighting device in which the power supply magnet has been displaced in the fourth modified example. Figure 37B is a cross-sectional view showing an example of magnet displacement in the fourth modified example. Figure 37B shows a cross-section taken along line I-I in Figure 35. As shown in Figures 36B and 37B, the power supply magnet 61a displaced in the negative Y-axis direction presses the suspension D0a in the negative Y-axis direction. Meanwhile, the side edge portion D3a of the suspension D0a comes into contact with the limiter 69, suppressing the displacement of the suspension D0a in the negative Y-axis direction. This limits the displacement width and displacement angle of the power supply magnet 61a pressing the suspension D0a.

In this modified example, it is necessary to balance the magnet holding force and the load of the suspension D0a (suspension force), so it is desirable for the magnet holding force to be greater than the suspension force. In addition, in this modified example, the suspension force can be adjusted by the shape of the suspension D0a, but it can also be adjusted by adjusting the plate thickness of the suspension D0a. In addition, since there is no need to prepare a separate conductive elastic body, the number of parts in the main body 60 can be reduced.

The lighting device 3 in the embodiment may be provided with a switch or the like for manually controlling the light distribution. FIG. 38 is a perspective view showing an example of a lighting device in the fifth modified example. As shown in FIG. 38, the lighting device 8 in the modified example further includes a dial 6A.

In the present embodiment, the fixed frame 10 is described as being attached to the ceiling CL, but it may be attached to other objects such as a floor or a wall. In addition to the locking mechanism B0, the tube portion 70 and the light body 71 may further include another locking mechanism that locks the rotation of the tube portion 70 in a direction that shortens it.

In addition, for example, FIG. 10 shows a configuration in which the electronic device 3 is equipped with one spare magnet 62, but the electronic device 3 may be configured not to include a spare magnet, or may be equipped with two or more spare magnets.

The present invention has been described above based on the embodiments and various modifications, but it goes without saying that the present invention is not limited to the embodiments and various modifications, and various modifications can be made without departing from the gist of the present invention. Such modifications that do not depart from the gist of the present invention are also included in the technical scope of the present invention, and this is clear to those skilled in the art from the description of the claims.

1 lighting system, 2 fixing mechanism, 3, 4, 5, 6, 7, 8 lighting device, 10 fixing frame, 11 top plate, 12 side wall, 13 cutout portion, 14 engagement groove, 15 protrusion portion, 16 opening portion, 19 tapping screw, 20 rail, 21 side wall, 22 (22a, 22b) power supply rail, 23, 24 screw hole, 25 top plate, 26 (26a, 26b) flange portion, 27, 28 end portion, 30 first holding member, 31 bottom surface, 32, 42 screw hole, 33, 34 protrusion portion, 33a, 34b pressing portion, 35 hole portion, 36 hole portion, 38, 48 insulating sheet, 39, 49 screw, Description of the Related Art 40 Second holding member, 41 Drawing, 43, 44 Protrusion, 50 Power supply part, 51 Wiring, 60 Main body, 61a, 61b Power supply magnet, 62 Spare magnet, 63a, 63b Screw, 64a, 64b, 65a, 65b Hook part, 70 Cylinder part, 71 Lamp body, 79 Connection part, 81 (81a, 81b) Coil spring, 82a, 82b, 85a, 85b, 87a, 87b Leaf spring, 90, 95 Slider, 91a, 91b, 92a, 92b Protrusion, A1 Board, A2 Light source, A3 Lens holder, A4 Lens, A5 Hood, A6 Filter, B0 Lock mechanism, B1 Holder, B2 leaf spring, B3 swing shaft, B4 roller, B5 stopper, B6 pressure part, D0a suspension, CL ceiling

Claims (5)

a rail on which an object to be operated is attached;
A fixed frame that is fixed to any one of a wall surface, a ceiling surface, and a floor surface;
a holding member for holding the rail on the fixed frame;
Equipped with
The stationary frame has a recess formed therein in a first direction in which the rail extends, the recess being adapted to engage with the holding member,
the retaining member is removably fixed to an end of the rail in the first direction,
The holding member is
a first holding member that is detachably fixed to a first end of the rail in the first direction, the first holding member including a pair of protruding portions that protrude in a direction from the first end to a second end in the first direction and are formed symmetrically in a second direction that intersects with the first direction;
a second holding member that is detachably fixed to a second end portion of the rail opposite to the first end portion of the rail in the first direction and has a protrusion that extends in the second direction;
Fixing mechanism. The fixing mechanism according to claim 1 , wherein the first holding member and the second holding member are fixed to the rail by screws. a distance between the pair of protrusions of the first holding member in the second direction is greater than a width of the fixing frame in the second direction;
The fixing mechanism according to claim 1 , wherein the pair of protrusions are elastically deformable in the second direction. The recessed portion is
a cutout portion that engages with the pair of protrusions of the first holding member;
an engaging portion formed on an end of the fixing frame in the first direction and adapted to engage with a protrusion of the second holding member;
A fixing mechanism according to any one of claims 1 to 3 . The fixing frame is further formed with a protrusion protruding in the first direction from the first end to the second end,
The fixing mechanism according to claim 1 , wherein the first holding member is further formed with a hole through which the protrusion is inserted.

Images