JP7715506B2 - lighting fixtures - Google Patents

Description

The present invention relates to a lighting fixture.

The spotlight described in Patent Document 1 comprises a base, an arm, and a lamp. The base is fixed to the ceiling surface, and the lamp is connected to the base via an arm. The joint connecting the lower end of the arm to the lamp comprises a protruding protruding plate on the top surface of one end of the lamp. The protruding plate is sandwiched between a pair of half members that make up the arm. Each half member and the protruding plate has a through-hole formed in it. A shaft screw is inserted into the through-hole. The shaft screw passes through both half members and the protruding plate and screws into a thumb nut. The amount of engagement (rotational load) of the thumb nut with the shaft screw is adjusted to rotate the lamp relative to the arm or to secure the lamp to the arm.

Japanese Patent Application Publication No. 6-283018

However, in the spotlight described in Patent Document 1, if the lighting fixture is repeatedly rotated without adjusting the amount of engagement of the thumb nut with the shaft screw, the connection between the shaft screw and the thumb nut may loosen. This may result in the lighting fixture being unable to be fixed to the arm. In other words, the lighting fixture's position cannot be accurately maintained in the position desired by the user.

The present invention was made in consideration of the above-mentioned problems, and its purpose is to provide a lighting fixture that can accurately maintain the position of the lamp.

The lighting fixture disclosed herein comprises a lamp and a support portion. The support portion rotatably supports the lamp. The support portion includes a main body portion, a rotating member, a fastening member, and a contact member. The main body portion has a first hole and a second hole intersecting the first hole. The fastening member is inserted into the first hole and fastens the rotating member rotatably relative to the main body portion. The contact member is inserted into the second hole and contacts the fastening member.

In the lighting fixture disclosed herein, the first hole preferably intersects the extension direction of the main body. The second hole preferably extends along the extension direction of the main body.

In the lighting fixture disclosed herein, the main body preferably further has a third hole through which wiring can be drawn out. The third hole preferably extends along the direction in which the main body extends and faces the first hole in the direction in which the main body extends.

This invention allows the position of the lighting fixture to be maintained with precision.

1 is a side view showing a lighting fixture according to an embodiment of the present invention. 1 is a perspective view showing a lighting fixture according to an embodiment. FIG. 3 is a perspective view showing a state in which the lighting fixture shown in FIG. 2 is rotated. FIG. 2 is an enlarged perspective view of a support portion according to the embodiment. 5 is a perspective view showing the support portion shown in FIG. 4 from another direction. FIG. 2 is a cross-sectional view of the lighting fixture taken along the line AA in FIG. 1.

Embodiments of the present invention will now be described with reference to the drawings. In the drawings, identical or equivalent parts will be designated by the same reference symbols and will not be described repeatedly. In this specification, to facilitate understanding of the invention, descriptions will be made with reference to the mutually perpendicular X, Y, and Z directions. For example, the X and Y directions are parallel to the horizontal direction, and the Z direction is parallel to the vertical direction. However, the X and Y directions may be parallel to a direction other than the horizontal direction, and the Z direction may be parallel to a direction other than the vertical direction.

First, a lighting fixture 100 according to an embodiment of the present invention will be described with reference to Figure 1. Figure 1 is a side view showing the lighting fixture 100 according to an embodiment.

The lighting fixture 100 is detachably attached to the duct rail 200. As shown in FIG. 1, the duct rail 200 is fixed to, for example, a ceiling C. In this embodiment, the lighting fixture 100 will be described using an example in which the lighting fixture 100 is attached to a duct rail 200 fixed to the ceiling C. The duct rail 200 may be embedded in the ceiling C, or may be suspended from the ceiling C by an arm, wire, or the like. The duct rail 200 may also be fixed to a wall or floor. Therefore, the lighting fixture 100 may be placed on a wall or floor.

The lighting fixture 100 comprises a support part 1, a lighting fixture 2, and a housing 3.

The lighting fixture 2 has a light exit surface 2a. The lighting fixture 2 emits light from the light exit surface 2a to the outside of the lighting fixture 2.

The housing 3 is detachably attached to the duct rail 200. In this embodiment, for example, the housing 3 extends along the duct rail 200 when the lighting fixture 100 is attached to the duct rail 200. The shape of the housing 3 is not particularly limited. For example, the housing 3 may have a substantially cylindrical shape in side view, a substantially truncated cone shape, or a substantially rectangular shape. The housing 3 houses at least the wiring cd connected to the lighting fixture 2 (see Figure 5).

The support part 1 rotatably supports the lamp 2. The support part 1 also connects the lamp 2 to the housing 3. The lighting fixture 100 of this embodiment is a spotlight, and the support part 1 supports the lamp 2 rotatably relative to the housing 3. Specifically, for example, the lamp 2 is rotatable in a rotational direction R1 relative to the housing 3. Therefore, the angle between the lamp 2 and the housing 3 can be changed. For example, the angle between the lamp 2 and the housing 3 can be changed within a range of 0° to 92°. The lamp 2 is rotatable in a rotational direction R2 around the support part 1 as the rotation axis AX (see Figure 4).

In the following, for ease of explanation, the side on which the lighting fixture 100 is placed relative to the duct rail 200 may be defined as the "lower side," and the side on which the duct rail 200 is placed relative to the lighting fixture 100 may be defined as the "upper side," thereby defining the up-down direction.

Next, the lighting fixture 100 will be further described with reference to Figures 1 to 3. Figure 2 is a perspective view of the lighting fixture 100. Specifically, Figure 2 is a perspective view of the lighting fixture 100 as viewed from the side opposite the ceiling C. Figure 3 is a perspective view of the lighting fixture 100 shown in Figure 2 after it has been rotated in rotation direction R1. In Figures 2 and 3, the housing 20 and cover 22 of the lighting fixture 2 are shown separately to make the invention easier to understand.

As shown in Figures 2 and 3, the lighting fixture 100 further includes a lid portion 31, a power supply unit 5, a connection portion 6, and an engagement portion 7.

The power supply device 5 is housed, for example, inside the housing 3. The power supply device 5 generates power to be supplied to the lighting fixture 2 based on the external power supply voltage. In this embodiment, the power generated by the power supply device 5 is supplied to the lighting fixture 2, for example, via wiring cd housed in the housing 3.

In this embodiment, the top surface of the housing 3 is open. The lid portion 31 is disposed on the top surface of the housing 3. Specifically, the lid portion 31 covers the open top surface of the housing 3. That is, the lid portion 31 functions, for example, as a lid for the housing 3. The lid portion 31 is made of, for example, metal. The lid portion 31 is attached to the housing 3. Specifically, the lid portion 31 is fixed to the housing 3 by a fixing member 3b, such as a screw. Therefore, the lid portion 31 can effectively dissipate heat from the power supply device 5.

The connection portion 6 protrudes upward, passing through a notch 31n in the cover portion 31. The connection portion 6 is electrically and detachably connected to the duct rail 200. The connection portion 6 is, for example, a plug. An external power supply voltage is applied to the connection portion 6 from, for example, the duct rail 200. In this embodiment, the connection portion 6 includes, for example, two plug terminals 61. When the plug terminals 61 connect to the conductor portion of the duct rail 200, the external power supply voltage is applied from the conductor portion to the plug terminals 61. The external power supply voltage applied to the connection portion 6 is then transmitted from the plug terminals 61 to the power supply unit 5 via a cable (not shown).

The engaging portion 7 is disposed, for example, on the lid portion 31. Specifically, the engaging portion 7 is disposed on the side of the lid portion 31 opposite the support portion 1 in the longitudinal direction of the lid portion 31. The engaging portion 7 engages, for example, with the duct rail 200. Specifically, when the lighting fixture 100 is attached to the duct rail 200, the engaging portion 7 engages with the interior of the duct rail 200. Therefore, even if the lighting fixture 100 vibrates due to shaking of the building caused by an earthquake or the like, the engaging portion 7 engages with the duct rail 200, allowing the lighting fixture 100 to be stably attached to the duct rail 200.

The lighting fixture 2 includes a housing 20, a light source 21, a cover 22, and an attachment portion 23.

In this embodiment, the housing 20 has a generally cylindrical shape. However, the housing 20 may also have a generally cubic shape or a generally polygonal cylindrical shape. In this embodiment, both ends of the housing 20 are open. Of both ends of the housing 20, the end farther from the support portion 1 corresponds to the light exit surface 2a of the lamp 2.

The light source 21 is disposed inside the housing 20. The light source 21 emits light when power is supplied from the power supply unit 5 via the wiring cd. The light emitted by the light source 21 is emitted to the outside of the lighting fixture 2 from the light emission surface 2a. The light source 21 has, as a light-emitting element, for example, an LED (Light Emitting Diode) element. The light source 21 is, for example, an SMD (surface mount device) or a COB (chip on board). In this embodiment, the light source 21 is a planar light source.

The cover 22 is disposed at the end of the housing 20. Specifically, the cover 22 is disposed at one of the two end portions of the housing 20, the end opposite the light exit surface 2a. The cover 22 covers the open end of the housing 20. The cover 22 has a notch 22n. In this embodiment, the notch 22n has an angular U-shape in a plan view. When the cover 22 covers the end of the housing 20, at least a portion of the support part 1 is exposed through the notch 22n.

The mounting unit 23 is located inside the housing 20. In this embodiment, the housing 20 and the mounting unit 23 are integrated. However, the housing 20 and the mounting unit 23 may be separate bodies. In this embodiment, the mounting unit 23 includes mounting members 232, 233, and 234.

Each of the mounting members 232, 233, and 234 has, for example, a generally plate shape. In this embodiment, the mounting members 232, 233, and 234 are integral. The mounting member 233 connects a predetermined position on the inner surface of the housing 20 to a position on the inner surface of the housing 20 opposite the predetermined position. This increases the rigidity of the lighting fixture 2. The mounting members 232 and 234 each intersect with the mounting member 233. In the example shown in FIG. 2, the mounting members 232 and 234 are each generally perpendicular to the mounting member 233. Furthermore, the mounting members 233 and 234 face each other.

In this embodiment, the mounting member 232 has a rib 232a (see FIG. 6). In a cross-sectional view, the rib 232a is located at the end of the mounting member 232. The rib 232a extends in the direction in which the housing 20 extends, and a screw hole is provided at the end of the rib 232a. Furthermore, the mounting member 233 has a rib 233a. In a cross-sectional view, the rib 233a is located in the center of the mounting member 233. The rib 233a extends in the direction in which the housing 20 extends, and a screw hole is provided at the end of the rib 233a. Furthermore, the mounting member 234 has a rib 234a. In a cross-sectional view, the rib 234a is located at the end of the mounting member 234. The rib 234a extends in the direction in which the housing 20 extends, and a screw hole is provided at the end of the rib 234a.

The support unit 1 includes a main body unit 10 and a rotating member 11.

In this embodiment, the main body 10 extends in the first direction D1. Specifically, when the lighting fixture 100 is attached to the duct rail 200, the main body 10 extends along the Z direction (up and down). In this embodiment, the main body 10 rotates, for example, in the rotation direction R2, but does not rotate in the rotation direction R1 (see Figure 4).

The rotating member 11 has a generally T-shape in plan view. In this embodiment, the rotating member 11 includes mounting members 12, 13, 14, and a base portion 15. In this embodiment, the mounting members 12, 13, 14, and base portion 15 are integrated. However, the mounting members 12, 13, 14, and base portion 15 may also be separate.

In this embodiment, the base portion 15 has, for example, an angular U-shape. The base portion 15 surrounds at least a portion of the main body portion 10 (see FIG. 4). The mounting members 12, 13, and 14 each extend in different directions from the base portion 15. Specifically, the mounting members 12 and 14 extend from the base portion 15 toward opposite sides. The mounting member 13 extends from the base portion 15 approximately perpendicular to the mounting members 12 and 14. The mounting member 12 has an opening 12h. The mounting member 13 has an opening 13h. The mounting member 14 has an opening 14h.

The mounting member 12 is attached to the mounting member 232 by threading a screw 12b through the opening 12h of the mounting member 12 into the threaded hole of the rib 232a (see Figure 6). The mounting member 13 is attached to the mounting member 233 by threading a screw 13b through the opening 13h of the mounting member 13 into the threaded hole of the rib 233a. The mounting member 14 is attached to the mounting member 234 by threading a screw 14b through the opening 14h of the mounting member 14 into the threaded hole of the rib 234a. As a result, the rotating member 11 is fixed to the mounting portion 23.

In this embodiment, the rotating member 11 is rotatable relative to the main body 10. When the lamp 2 shown in FIG. 2 rotates in the rotational direction R1 relative to the housing 3, the rotating member 11 fixed to the mounting portion 23 of the lamp 2 rotates in the rotational direction R1 relative to the main body 10, as shown in FIG. 3. The attachment of the rotating member 11 to the main body 10 will be described later with reference to FIGS. 4 to 6.

In this embodiment, the cover 22 of the lighting fixture 2 has three engagement portions (not shown). The three engagement portions of the cover 22 are, for example, curved or bent. The three engagement portions of the cover 22 are positioned to correspond to the openings 12h of the mounting member 12, 13h of the mounting member 13, and 14h of the mounting member 14, respectively. The three engagement portions of the cover 22 engage with the openings 12h to 14h, respectively, thereby attaching the cover 22 to the housing 20.

Next, the support part 1 will be described with reference to Figures 4 to 6. Figure 4 is an enlarged perspective view of the support part 1. Figure 5 is a perspective view of the support part 1 shown in Figure 4 from another direction. Figure 6 is a cross-sectional view of the lighting fixture 100 taken along the A-A cross-sectional line in Figure 1. To facilitate understanding of the invention, Figures 4 and 5 show the support part 1 of the lighting fixture 100 tilted as shown in Figure 3, and Figure 6 shows the lighting fixture 100 tilted as shown in Figure 2. Furthermore, the lighting fixture 2 is omitted from Figures 4 and 5.

As shown in Figures 4 and 5, the support part 1 includes a fastening member 16 and a contact member 17. The fastening member 16 is, for example, a screw. In this embodiment, the fastening member 16 has a screw head 16a and a shank 16b. The radial size of the screw head 16a is larger than the radial size of the shank 16b. The shank 16b has a helical thread groove. Note that the thread groove of the shank 16b is omitted in Figures 4 and 5.

In this embodiment, the support part 1 further includes a threaded member 16c. The threaded member 16c is, for example, a washer. Specifically, the threaded member 16c is, for example, a spring washer or a disc spring. The threaded member 16c has, for example, a generally conical or truncated conical shape and is elastic. The threaded member 16c is disposed between the screw head 16a and the rotating member 11. For example, by tightening the fastening member 16, the threaded member 16c elastically deforms, applying a rotational load to the rotating member 11. Note that the shape of the threaded member 16c is not particularly limited. The threaded member 16c may have, for example, a generally annular shape. Furthermore, the threaded member 16c does not have to be disposed between the screw head 16a and the rotating member 11.

The contact member 17 is, for example, a screw. Specifically, in this embodiment, the contact member 17 is, for example, a hexagonal socket set screw, in which the radial size of the screw head and the radial size of the shank are approximately the same. A hexagonal socket set screw is a so-called flat head screw, set screw, or hollow set screw. However, the radial size of the screw head and the radial size of the shank of the contact member 17 may differ. Furthermore, the screw head may have a hole with a shape other than hexagonal.

The main body 10 has a first surface 10a, a second surface 10b, a third surface 10c, a fourth surface 10d, a first hole H1, a second hole H2, and a protrusion 10p.

The first surface 10a faces the base portion 15 and the mounting member 12 in a second direction D2 that intersects with the first direction D1 in which the main body portion 10 extends. Specifically, in this embodiment, the second direction D2 is perpendicular to the first direction D1. Furthermore, when the lighting fixture 100 is mounted on the duct rail 200, the second direction D2 is aligned with the Y direction.

The second surface 10b faces the base portion 15 and the mounting member 14 in the second direction D2. The second surface 10b and the third surface 10c face the first surface 10a in the second direction D2. The second surface 10b and the third surface 10c are substantially parallel. There is a step between the second surface 10b and the third surface 10c. In this embodiment, the third surface 10c is closer to the first surface 10a than the second surface 10b in the second direction D2.

The fourth surface 10d intersects with each of the second surface 10b and the third surface 10c. Specifically, the fourth surface 10d is approximately perpendicular to each of the second surface 10b and the third surface 10c. The fourth surface 10d connects the second surface 10b and the third surface 10c. The fourth surface 10d faces the housing 3 in the first direction D1. Specifically, the fourth surface 10d faces the opening 3h of the housing 3. The opening 3h is located on the underside of the housing 3.

The protrusion 10p protrudes from the third surface 10c in the second direction D2. In this embodiment, the protrusion 10p has a generally keyhole shape in a plan view. In this embodiment, the protrusion 10p is disposed in a space Sp defined by the third surface 10c and the fourth surface 10d of the main body 10. The space Sp is, for example, a recess in the main body 10.

The first hole H1 intersects the first direction D1 in which the main body 10 extends. That is, the first hole H1 is approximately perpendicular to the first direction D1. The first hole H1 also extends along the second direction D2. In this embodiment, the first hole H1 penetrates the main body 10. Specifically, the first hole H1 penetrates from the first surface 10a of the main body 10 through the third surface 10c and the protruding portion 10p in the second direction D2.

The fastening member 16 is inserted into the first hole H1 and fastens the rotating member 11 rotatably relative to the main body 10. Specifically, when the fastening member 16 is screwed into the first hole H1 via the threaded member 16c and the base portion 15 of the rotating member 11, the threaded member 16c elastically deforms and a rotational load is applied to the rotating member 11. In other words, the rotating member 11 is fastened toward the main body 10 to the extent that the rotating member 11 is rotatable relative to the main body 10. Therefore, the rotating member 11 is rotatable relative to the main body 10.

When the fastening member 16 is threaded into the first hole H1 via the threaded member 16c, the screw head 16a presses the threaded member 16c against the base portion 15 of the rotating member 11 to an extent that allows the rotating member 11 to rotate relative to the main body portion 10. The threaded member 16c then presses the base portion 15 of the rotating member 11 against the main body portion 10 to an extent that allows the rotating member 11 to rotate relative to the main body portion 10. In other words, the fastening member 16 applies a rotational load to the rotating member 11. The fastening member 16 also applies a rotational load to the rotating member 11 to an extent that when a force is applied, the rotating member 11 rotates relative to the main body portion 10, but when no force is applied, the rotating member 11 does not rotate relative to the main body portion 10. Therefore, a rotational load is applied to the mounting portion 23 (lamp 2) fixed to the rotating member 11. As a result, the lamp 2 can be rotated to a desired position relative to the housing 3 and maintained in the desired position. The shaft 16b of the fastening member 16 may or may not pass through the first hole H1.

In this embodiment, the second hole H2 is located in the convex portion 10p. The second hole H2 intersects with the first hole H1. The second hole H2 also extends along the first direction D1 in which the main body 10 extends. That is, in this embodiment, the second hole H2 is approximately perpendicular to the first hole H1. Therefore, compared to when the first hole H1 extends along the first direction D1 and the second hole H2 extends along the second direction D2, displacement of the fastening member 16 in the first direction D1 due to its own weight can be suppressed.

In addition, in this embodiment, the second hole H2 penetrates the protrusion 10p all the way to the first hole H1. In other words, the cavity that forms the second hole H2 and the cavity that forms the first hole H are connected.

The contact member 17 is inserted into the second hole H2 and contacts the fastener member 16 inserted into the first hole H1. Specifically, for example, the tip of the contact member 17 engages with a thread groove formed on the shaft portion 16b of the fastener member 16. This prevents the fastener member 16 from rotating. As a result, even when the lamp 2 is rotated multiple times in the rotational direction R1, the fastener member 16 and the threaded member 16c are prevented from displacing in the direction away from the main body 10 (second direction D2). In addition, because the screw head 16a and the threaded member 16c of the fastener member 16 are prevented from displacing in the direction away from the main body 10 (second direction D2), the rotational load applied to the rotating member 11 by the fastener member 16 and the threaded member 16c is prevented from decreasing. Furthermore, even when the lamp 2 is rotated in the rotational direction R1 multiple times, the tightening member 16 and the threaded member 16c continue to apply a rotational load to the rotating member 11, allowing the position of the lamp 2 to be maintained with precision.

Furthermore, according to this embodiment, during the manufacturing process of the lighting fixture 100, the tightening amount (tightening torque) of the fastening member 16 is adjusted so that the rotational load applied to the rotating member 11 is appropriate, and then the contact member 17 is brought into contact with the fastening member 16. Therefore, it is possible to prevent the fastening member 16 from being displaced in the direction away from the main body 10 (second direction D2), thereby maintaining an appropriate rotational load applied to the rotating member 11.

Furthermore, according to this embodiment, a screw member such as a nut is not threaded onto the tip of the fastening member, eliminating the possibility of the connection between the fastening member and the screw member loosening. As a result, displacement of the fastening member in the second direction D2 can be prevented.

Furthermore, according to this embodiment, displacement of the fastening member 16 in the second direction D2 can be prevented without bonding the fastening member 16 to the first hole H1 with an adhesive. For example, there is no need to bond the fastening member to the first hole with an adhesive such as a glue. Therefore, compared to when the fastening member 16 is bonded to the first hole H1, the lighting fixture 100 is easier to disassemble. As a result, for example, the maintenance of the lighting fixture 100 is improved. Also, compared to when the fastening member 16 is bonded to the first hole H1, assembly of the lighting fixture 100 is easier.

Next, continuing to refer to Figures 5 and 6, the third hole H3 through which the wiring cd is drawn out will be described. As shown in Figures 5 and 6, the main body 10 has the third hole H3, which is arranged on the fourth surface 10d of the main body 10. In this embodiment, the third hole H3 extends along the first direction D1 in which the main body 10 extends. The third hole H3 also faces the convex portion 10p of the main body 10 in the first direction D1. In other words, the third hole H3 faces the first hole H1 that penetrates the convex portion 10p.

The wiring cd is drawn out from the third hole H3. The wiring cd is housed in, for example, the housing 3 and connects the power supply unit 5 and the light source 21. Therefore, compared to when a screwing member such as a nut is threaded onto the tip of the fastening member 16, a larger space can be secured in the space Sp formed by the third surface 10c and the fourth surface 10d of the main body 10 for the wiring cd drawn out from the third hole H3. This is because when a screwing member such as a nut is threaded onto the tip of the fastening member 16, the screwing member is disposed in, for example, the space Sp. Furthermore, compared to when a screwing member such as a nut is threaded onto the tip of the fastening member 16, the size of the main body 10 can be reduced while securing space in the space Sp for the wiring cd drawn out from the third hole H3. Note that a screwing member such as a nut may be threaded onto the tip of the fastening member 16.

Embodiments of the present invention have been described above with reference to the drawings. However, the present invention is not limited to the above-described embodiments and modifications, and can be implemented in various forms without departing from the spirit of the present invention. The drawings mainly show each component diagrammatically to facilitate understanding, and the D, length, number, etc. of each component shown may differ from the actual components due to the convenience of creating the drawings. Furthermore, the shape, dimensions, etc. of each component shown in the above-described embodiments are merely examples and are not particularly limited, and various modifications are possible without substantially departing from the effects of the present invention.

(1) In this embodiment, the lighting fixture 100 is mounted on the duct rail 200. However, the lighting fixture 100 may also be mounted directly to a mounting surface such as a ceiling C, a wall, or a floor. In this case, the lighting fixture 100 is mounted to the mounting surface using a fixing member such as a screw. Specifically, for example, the housing 3 of the lighting fixture 100 is mounted to the mounting surface using a fixing member.

(2) In this embodiment, the power supply device 5 is housed inside the housing 3. However, the power supply device 5 does not have to be housed inside the housing 3. The power supply device 5 may be disposed in the lighting fixture 2, for example. In this case, the housing 3 may house wiring connecting the power supply device 5 and the connection unit 6. The housing 3 may also house the power supply device 5, wiring connecting the power supply device 5 and the connection unit 6, and wiring connecting the power supply device 5 and the light source 21.

(3) In this embodiment, the lighting fixture 100 includes a housing 3 that houses the power supply unit 5. However, the lighting fixture 100 does not necessarily have to include a housing 3. For example, if the lighting fixture 100 is directly mounted on a mounting surface such as a ceiling, the power supply unit 5 is located on the back side of the mounting surface.

(4) In this embodiment, the cover 22 is attached to the housing 20 by engaging the three engagement portions of the cover 22 with the openings 12h to 14h of the rotating member 11, respectively. However, the cover 22 may also be glued to the housing 20, or the cover 22 may be screwed into the housing 20. In this case, the cover 22 may or may not have three engagement portions.

(5) In this embodiment, the first hole H1 extends along the second direction D2, and the second hole H2 extends along the first direction D1. However, the first hole H1 may extend along the first direction D1, and the second hole H2 may extend along the second direction D2.

The present invention can be used in the field of lighting fixtures and has industrial applicability.

REFERENCE SIGNS LIST 100 Lighting fixture 1 Support part 10 Main body part 11 Rotating member 16 Fastening member 17 Contact member 2 Lighting fixture cd Wiring H1 First hole H2 Second hole H3 Third hole

Claims (3)

Light fixtures and
a support portion that rotatably supports the lighting fixture,
The support portion is
a body portion having a first hole and a second hole intersecting the first hole;
A rotating member;
a fastening member that is inserted into the first hole and fastens the rotary member rotatably relative to the main body;
a contact member that is inserted into the second hole and contacts the fastening member ,
The fastening member has a shaft portion on which a thread groove is formed,
A lighting fixture , wherein a tip portion of the contact member inserted into the second hole engages with the thread groove formed on the shaft portion of the fastening member . the first hole intersects with the extending direction of the main body portion,
The lighting device according to claim 1 , wherein the second hole is aligned with a direction in which the main body extends. the main body further has a third hole through which a wiring is drawn out,
The lighting device according to claim 1 or 2, wherein the third hole is aligned along a direction in which the main body extends and faces the first hole in the direction in which the main body extends.