Lighting apparatus

Abstract

To provide a lighting apparatus which can reduce an erroneous operation of an operation lever.SOLUTION: A lighting apparatus 200A comprises an operation lever 7, a plug part 6, and a rotation stop part 8. The operation lever 7 is rotatable in a first rotation direction RD1 and a second rotation direction RD2. The plug part 6 is attachable and detachable to / from a duct rail 100. The plug part 6 is switched to a second posture from a first posture by the rotation of the operation lever 7 up to a second rotation position P2 from a first rotation position P1, and switched in a posture to the first posture from the second posture by the rotation of the operation lever 7 up to the first rotation position P1 from the second rotation position P2. The rotation stop part 8 can be transited in a state between a first state for prohibiting the rotation of the operation lever 7 in the first rotation direction RD1 to the second rotation position P2 from the first rotation position P1, and a second state for permitting the rotation of the operation] lever 7 in the first rotation direction RD1 to the second rotation position P2 from the first rotation position P1.SELECTED DRAWING: Figure 6

Description

[Technical Field]

[0001] The present invention relates to a lighting fixture. [Background technology]

[0002] Patent Document 1 discloses a power supply box device that is attached to a wiring duct. The power supply box device of Patent Document 1 includes an operating lever that rotates a plug and a lever cover. The lever cover can be raised and lowered between a locked position and an unlocked position. The lever cover covers the operating lever in the locked position. According to the power supply box device of Patent Document 1, by placing the lever cover in the locked position, it is possible to reduce erroneous operation of the operating lever. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] International Publication No. 2018 / 128170 Summary of the Invention [Problem to be solved by the invention]

[0004] However, in the power supply box device of Patent Document 1, a separate component for covering the operating lever needs to be provided to reduce erroneous operation of the operating lever, which may hinder efforts to reduce the size of the device, for example.

[0005] The present invention has been made in consideration of the above-mentioned problems, and its object is to provide a lighting device that can reduce erroneous operation of an operating lever without providing a part that covers the operating lever. [Means for solving the problem]

[0006] The lighting fixture disclosed in the present application is a lighting fixture to be attached to a duct rail, and includes a lighting fixture body having a light source that generates light, a housing extending along the duct rail, the housing having an upper surface facing the duct rail, a lower surface to which the lighting fixture body is connected, and a pair of side surfaces parallel to the longitudinal direction of the duct rail, an operating lever that is rotatable in a first rotation direction and a second rotation direction that is opposite to the first rotation direction, and a control lever that protrudes from the upper surface of the housing and is detachable from the duct rail, and the operating lever switches from a first position to a second position by rotating from a first rotation position to a second rotation position, the operating lever includes a plug portion whose position is changed from the second position to the first position as the bar rotates from the second rotation position to the first rotation position; and a rotation stopper portion whose state can be freely changed between a first state that prevents rotation of the operating lever in the first rotation direction from the first rotation position to the second rotation position and a second state that allows rotation of the operating lever in the first rotation direction from the first rotation position to the second rotation position, wherein the operating lever has a first operating portion that is operated by an operator, and the rotation stopper portion has a second operating portion that is operated by the operator, and the first operating portion and the second operating portion are arranged on one of the pair of side surfaces. [Effects of the Invention]

[0007] According to the lighting fixture disclosed in the present application, it is possible to reduce erroneous operation of the operating lever without providing a component that covers the operating lever. [Brief explanation of the drawings]

[0008] [Figure 1] 1 is a diagram showing a lighting fixture according to a first embodiment. [Figure 2] FIG. [Figure 3] 1 is a side view showing a lighting fixture according to a first embodiment. [Figure 4] 1 is a perspective view showing a lighting fixture according to a first embodiment. [Figure 5] 1 is a perspective view showing a part of a lighting fixture according to a first embodiment. [Figure 6] 4 is another perspective view showing a part of the lighting fixture according to the first embodiment. FIG. [Figure 7] 1 is a plan view showing a part of a lighting fixture according to a first embodiment. [Figure 8] 4 is another plan view showing a part of the lighting fixture according to the first embodiment. FIG. [Figure 9] 1 is a side view showing a part of the lighting fixture according to the first embodiment. [Figure 10] 1 is a side view showing a part of the lighting fixture according to the first embodiment. [Figure 11] 10A and 10B are diagrams showing modified examples of the rotation restricting protrusion; [Figure 12] FIG. 10 is a perspective view showing a lighting fixture according to a second embodiment. [Figure 13] FIG. 10 is a perspective view showing a part of a lighting fixture according to a second embodiment. [Figure 14] FIG. [Figure 15] FIG. 10 is a front view showing a lighting fixture according to a third embodiment. [Figure 16] 16 is a cross-sectional view of the lighting fixture taken along line AA in FIG. 15. [Figure 17] FIG. 10 is a side view showing a lighting fixture according to a fourth embodiment. [Figure 18] FIG. 10 is a front view showing a lighting fixture according to a fourth embodiment. [Figure 19] FIG. 10 is a bottom view showing the lighting fixture according to the fourth embodiment. [Figure 20] FIG. 20 is a cross-sectional view of the lighting fixture taken along line BB in FIG. 19. [Figure 21] FIG. [Figure 22] FIG. 10 is another perspective view showing the accessory. [Figure 23] FIG. 2 is a perspective view showing a second accessory. [Figure 24] FIG. 10 is a perspective view showing a third accessory. [Figure 25] FIG. 10 is a perspective view showing a fourth accessory. [Figure 26] FIG. 10 is a perspective view showing a lighting fixture according to a fifth embodiment. [Figure 27] FIG. 10 is a perspective view showing a part of a lighting fixture according to a fifth embodiment. [Figure 28] FIG. 2 is a perspective view showing a light source unit. [Figure 29] FIG. [Figure 30] FIG. [Figure 31] FIG. 10 is a front view showing a lighting fixture according to a sixth embodiment. [Figure 32] FIG. [Figure 33] 32 is a cross-sectional view of the lamp body taken along line CC in FIG. 31. [Figure 34] 13 is a diagram showing the configuration of a lighting device body included in a lighting fixture according to a sixth embodiment. FIG. [Figure 35] FIG. 4 is a diagram showing the configuration of a lighting fixture body according to Comparative Example 1. [Figure 36] 13 is a diagram showing the configuration of a lighting device body included in a lighting fixture according to a seventh embodiment. FIG. [Figure 37] FIG. 10 is a diagram showing the configuration of a lighting fixture body according to Comparative Example 2. [Figure 38] FIG. 13 is a perspective view showing a lighting fixture according to an eighth embodiment. [Figure 39] FIG. 13 is a perspective view showing a part of a lighting fixture according to an eighth embodiment. [Figure 40] FIG. [Figure 41] FIG. 10 is another perspective view showing the fixed frame. [Figure 42] FIG. 4 is a perspective view showing a second reflecting member. DETAILED DESCRIPTION OF THE INVENTION

[0009] Hereinafter, embodiments of the lighting fixture and accessories of the present invention will be described with reference to the drawings (Figs. 1 to 42). However, the present invention is not limited to the following embodiments, and can be implemented in various forms without departing from the spirit of the present invention. Note that duplicated explanations may be omitted as appropriate. In addition, the same reference symbols are used for the same or equivalent parts in the drawings, and explanations will not be repeated.

[0010] [Embodiment 1] Hereinafter, a first embodiment will be described with reference to Figs. 1 to 11. First, a lighting fixture 200A of the present embodiment will be described with reference to Fig. 1. Fig. 1 is a diagram showing the lighting fixture 200A of the present embodiment. As shown in Fig. 1, the lighting fixture 200A of the present embodiment is detachably attached to a duct rail 100.

[0011] The duct rail 100 is fixed to, for example, a ceiling C. In this embodiment, the lighting fixture 200A will be described using an example in which the lighting fixture 200A is attached to the duct rail 100 fixed to the ceiling C. The duct rail 100 may be embedded in the ceiling C or may be suspended from the ceiling C by an arm, a wire, or the like. The duct rail 100 may also be fixed to a wall or a floor. Therefore, the lighting fixture 200A may be placed on a wall or a floor.

[0012] For ease of explanation, the side of the duct rail 100 on which the lighting fixture 200A is placed is defined as the "lower side," and the side of the duct rail 100 on which the lighting fixture 200A is placed is defined as the "upper side," thereby defining the up-down direction. Here, "up" and "down" correspond to "up" and "down" when the lighting fixture 200A is attached to the duct rail 100, which is fixed to the ceiling C.

[0013] As shown in FIG. 1, the lighting device 200A includes a lighting device main body 2, a housing 3, and a connecting arm portion 4.

[0014] The lamp body 2 has a light emitting surface 2a. The lamp body 2 emits light from the light emitting surface 2a to the outside of the lamp body 2.

[0015] The housing 3 is detachably attached to the duct rail 100. The duct rail 100 extends in a first direction D1. The first direction D1 is a direction parallel to the ceiling C. The housing 3 extends along the duct rail 100. In this embodiment, the housing 3 is attached to the duct rail 100 with no or almost no gap between the housing 3 and the duct rail 100.

[0016] The connecting arm 4 connects the lighting fixture main body 2 and the housing 3. The lighting fixture 200A of this embodiment is a spotlight, and the lighting fixture main body 2 is supported by the connecting arm 4 so that it can tilt freely relative to the housing 3. This makes it possible to change the angle between the lighting fixture main body 2 and the housing 3. For example, the angle between the lighting fixture main body 2 and the housing 3 can be changed within a range of 0° to 92°. Furthermore, the lighting fixture main body 2 is rotatable around the connecting arm 4 as a rotation axis.

[0017] Next, the duct rail 100 will be described with reference to Fig. 2. Fig. 2 is a perspective view showing the duct rail 100. As shown in Fig. 2, the duct rail 100 has a rail base 101. The rail base 101 is installed to extend linearly.

[0018] The rail base 101 has a lower wall 101a. The lower wall 101a forms the lower surface of the duct rail 100. An insertion groove 101b is formed in the lower wall 101a of the rail base 101. The insertion groove 101b extends in the direction in which the rail base 101 extends (first direction D1). The insertion groove 101b is a slit that communicates with the inside of the rail base 101.

[0019] The rail base 101 has therein two conductor portions 102 and two plug support portions 103. The two conductor portions 102 and the two plug support portions 103 extend in the direction in which the rail base 101 extends (first direction D1).

[0020] The two conductors 102 face each other with the insertion groove 101b therebetween. An external power supply voltage is applied to each conductor 102. The two plug support portions 103 are provided below the two conductors 102. The two plug support portions 103 face each other with the insertion groove 101b therebetween.

[0021] Next, the lighting fixture 200A of this embodiment will be further described with reference to Figures 3 to 10. First, the lighting fixture 200A of this embodiment will be described with reference to Figures 3 and 4. Figure 3 is a side view showing the lighting fixture 200A of this embodiment. Figure 4 is a perspective view showing the lighting fixture 200A of this embodiment.

[0022] As shown in FIG. 3, the lighting fixture body 2 has a light source 21. The light source 21 generates light. The light source 21 is disposed inside the lighting fixture body 2. The light generated from the light source 21 is emitted to the outside of the lighting fixture body 2 from a light emitting surface 2a. The light source 21 has, for example, an LED (Light Emitting Diode) element as a light emitting 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.

[0023] 3 and 4, the housing 3 has an opposing surface 3a. The opposing surface 3a is the surface that faces the duct rail 100 when the lighting fixture 200A is attached to the duct rail 100 described with reference to FIGS. 1 and 2. In this example, the opposing surface 3a is the top surface of the housing 3.

[0024] In this embodiment, the width W2 (FIG. 4) of the housing 3 is the same as or approximately the same as the width W1 (FIG. 2) of the duct rail 100. As a result, when the lighting fixture 200A is attached to the duct rail 100, the housing 3 and the duct rail 100 have a design that gives a sense of unity. Furthermore, since the entire or approximately the entire opposing surface 3a of the housing 3 is covered by the duct rail 100, dust and the like are less likely to adhere to the opposing surface 3a of the housing 3.

[0025] As shown in Fig. 3, lighting fixture 200A further includes a power supply device 5. Furthermore, as shown in Figs. 3 and 4, lighting fixture 200A further includes a plug unit 6, an operating lever 7, and a rotation stopper unit 8.

[0026] The plug portion 6 protrudes upward from the opposing surface 3a. The plug portion 6 is detachably attached to the duct rail 100 described with reference to Figs. 1 and 2. An external power supply voltage is applied to the plug portion 6 from the two conductor portions 102 described with reference to Fig. 2. The external power supply voltage is supplied to the power supply device 5 via the plug portion 6.

[0027] The power supply device 5 is housed inside the housing 3. The power supply device 5 generates power to be supplied to the light source 21 based on an external power supply voltage. When the light source 21 has an LED element as a light-emitting element, the power supply device 5 generates a DC voltage to drive the LED element. The power supply device 5 is an example of a power generation unit.

[0028] The operating lever 7 is operated by an operator. The operator can rotate the plug portion 6 by operating the operating lever 7. The rotation stopper 8 prevents the rotation of the operating lever 7. More specifically, the rotation stopper 8 can freely transition between a first state that prevents the rotation of the operating lever 7 and a second state that allows the rotation of the operating lever 7. The operator can operate the rotation stopper 8 to transition the state of the rotation stopper 8 from the first state to the second state.

[0029] Next, the plug portion 6 will be further described with reference to Figs. 5 to 8. Fig. 5 is a perspective view showing a portion of the lighting fixture 200A of this embodiment. Fig. 6 is another perspective view showing a portion of the lighting fixture 200A of this embodiment. Fig. 7 is a plan view showing a portion of the lighting fixture 200A of this embodiment. Fig. 8 is another plan view showing a portion of the lighting fixture 200A of this embodiment. For ease of explanation, the connecting arm portion 4 and the lighting fixture main body 2 are omitted from Figs. 5 to 8.

[0030] As shown in Figures 5 and 6, the plug portion 6 is rotatable about a first axis X1. In this embodiment, the first axis X1 extends in the vertical direction. As shown in Figures 7 and 8, the plug portion 6 switches between a first position and a second position by rotating. Note that Figures 5, 6, and 7 show the plug portion 6 in the first position. Figure 8 shows the plug portion 6 in the second position.

[0031] As shown in FIGS. 5 and 6, the plug portion 6 has a support portion 61, a plug terminal 62, and a rail engagement portion 63.

[0032] The support column 61 extends in the vertical direction. More specifically, the support column 61 extends along a first axis X1. The support column 61 functions as a rotation axis of the plug section 6. The first axis X1 is the central axis of the support column 61, and the support column 61 is rotatable around the first axis X1.

[0033] The plug terminals 62 protrude from the circumferential surface of the support portion 61. The plug terminals 62 rotate around the first axis X1 as a central axis in response to the rotation of the support portion 61. The rail engagement portion 63 is provided on the circumferential surface of the support portion 61. The rail engagement portion 63 is positioned below the plug terminals 62. The rail engagement portion 63 rotates around the first axis X1 as a central axis in response to the rotation of the support portion 61.

[0034] In the first position (FIG. 7), the conductor portion 102 (FIG. 2) of the duct rail 100 is connected to the plug terminal 62 of the plug portion 6, and the plug support portion 103 (FIG. 2) of the duct rail 100 is engaged with the rail engagement portion 63 of the plug portion 6. In the second position (FIG. 8), the insertion groove 101b (FIG. 2) of the duct rail 100 is parallel to the plug terminal 62 and rail engagement portion 63 of the plug portion 6. In other words, in the second position, the conductor portion 102 of the duct rail 100 is not connected to the plug terminal 62 of the plug portion 6, and the plug support portion 103 of the duct rail 100 is not engaged with the rail engagement portion 63 of the plug portion 6. By setting the plug portion 6 to the second position, it becomes possible to insert and remove the plug terminal 62 and the rail engagement portion 63 into and from the insertion groove 101b of the duct rail 100.

[0035] When the plug terminal 62 is connected to the conductor portion 102 of the duct rail 100, an external power supply voltage is applied from the conductor portion 102 to the plug terminal 62. The external power supply voltage is transmitted from the plug terminal 62 to the power supply device 5 via a cable (not shown).

[0036] When the rail engaging portion 63 engages with the plug supporting portion 103 of the duct rail 100, the lighting fixture 200A is fixed (mounted) to the duct rail 100. Specifically, the rail engaging portion 63 is sandwiched between the plug supporting portion 103 and the lower wall 101a of the rail base 101.

[0037] Next, the operating lever 7 will be further described with reference to Figs. 5 to 8. As shown in Figs. 5 and 6, the operating lever 7 is rotatable in a first rotational direction RD1 and a second rotational direction RD2. The second rotational direction RD2 is a rotational direction opposite to the first rotational direction RD1. In this embodiment, the first rotational direction RD1 and the second rotational direction RD2 are rotational directions around the first axis X1. More specifically, the operating lever 7 is rotatable between a first rotational position P1 shown in Fig. 7 and a second rotational position P2 shown in Fig. 8.

[0038] The operator can rotate the operating lever 7 in the first rotation direction RD1 from the first rotation position P1 to the second rotation position P2. The operator can also rotate the operating lever 7 in the second rotation direction RD2 from the second rotation position P2 to the first rotation position P1. The plug unit 6 switches from the first position to the second position when the operating lever 7 rotates from the first rotation position P1 to the second rotation position P2. The plug unit 6 switches from the second position to the first position when the operating lever 7 rotates from the second rotation position P2 to the first rotation position P1.

[0039] Next, the configuration of the operating lever 7 will be described with reference to Figures 5 and 6. As shown in Figures 5 and 6, the operating lever 7 has an operating part 71 and a connecting part 72. Hereinafter, the operating part 71 may be referred to as a "first operating part 71."

[0040] The first operating unit 71 is a part that is operated by an operator. The operator rotates the plug unit 6 by operating the first operating unit 71. In other words, the operator switches the position of the plug unit 6 between a first position and a second position by operating the first operating unit 71.

[0041] The first operating unit 71 has an operating knob 71a. Hereinafter, the operating knob 71a may be referred to as the "first operating knob 71a." The first operating knob 71a has a protrusion shape. The first operating unit 71 has the first operating knob 71a, which makes it easier for the operator to operate the first operating unit 71.

[0042] The connecting portion 72 connects the first operating portion 71 and the plug portion 6. More specifically, the connecting portion 72 is connected to the support portion 61 and protrudes from the circumferential surface of the support portion 61. Therefore, the connecting portion 72 rotates around the first axis X1 as a central axis. In other words, the operating lever 7 rotates around the first axis X1 as a central axis. It is preferable that the connecting portion 72 does not protrude from the opposing surface 3a of the housing 3. However, the connecting portion 72 may protrude from the opposing surface 3a of the housing 3. In this case, it is preferable that the connecting portion 72 protrudes slightly from the opposing surface 3a of the housing 3.

[0043] Next, the rotation stopper 8 will be further described with reference to Figures 5 to 9. Figure 9 is a side view showing a part of the lighting fixture 200A of this embodiment. For ease of explanation, the connecting arm 4 and the lighting fixture main body 2 are omitted from Figure 9.

[0044] As already explained, the rotation stopper 8 can freely transition between a first state and a second state. More specifically, the first state is a state in which rotation of the operating lever 7 in the first rotation direction RD1 from the first rotation position P1 to the second rotation position P2 is prevented. In other words, the first state is a state in which rotation of the operating lever 7 in the first rotation direction RD1 is prevented when the plug portion 6 is in the first posture. The second state is a state in which rotation of the operating lever 7 in the first rotation direction RD1 from the first rotation position P1 to the second rotation position P2 is permitted. In other words, the second state is a state in which rotation of the operating lever 7 in the first rotation direction RD1 is permitted when the plug portion 6 is in the first posture.

[0045] Therefore, when the rotation preventing portion 8 is in the first state, the plug portion 6 is prevented from switching from the first position to the second position. Furthermore, when the rotation preventing portion 8 is in the second state, the plug portion 6 is allowed to switch from the first position to the second position and from the second position to the first position.

[0046] 5 to 9, the rotation stopper 8 has an opposing portion 81, a rotation restricting protrusion 82, and an operating portion 83. Hereinafter, the operating portion 83 may be referred to as a "second operating portion 83."

[0047] The facing portion 81 faces the area through which the connecting portion 72 of the operating lever 7 passes. Hereinafter, the area through which the connecting portion 72 of the operating lever 7 passes may be referred to as the "operating lever passing area." In this embodiment, the facing portion 81 is disposed below the operating lever passing area.

[0048] The rotation restricting protrusion 82 protrudes from the opposing portion 81 toward the operating lever passing area. In this embodiment, the rotation restricting protrusion 82 protrudes upward from the opposing portion 81. More specifically, the rotation restricting protrusion 82 is disposed at a position overlapping with the rotation trajectory of the connecting portion 72 of the operating lever 7 when the rotation stopper 8 is in the first state. As a result, the rotation restricting protrusion 82 prevents the operating lever 7 from rotating in the first rotation direction RD1 from the first rotation position P1 to the second rotation position P2. The rotation restricting protrusion 82 is an example of a protrusion.

[0049] The second operating part 83 is a part that is operated by an operator. The second operating part 83 is connected to the opposing part 81. By operating the second operating part 83, the operator can transition the rotation preventing part 8 from the first state to the second state.

[0050] More specifically, the second operating part 83 is movable from the first state in the second direction D2. The second direction D2 is a direction away from the operating lever passing area. In this embodiment, the second direction D2 is a downward direction. When the operator moves the second operating part 83 in the second direction D2, the opposing part 81 moves away from the operating lever passing area. As a result, as shown in FIG. 9 , the rotation restricting protrusion 82 moves away from the operating lever passing area to a position where it does not overlap with the rotation trajectory of the connecting part 72 of the operating lever 7. When the rotation restricting protrusion 82 moves to a position where it does not overlap with the rotation trajectory of the connecting part 72 of the operating lever 7, rotation of the operating lever 7 is permitted.

[0051] The second operation unit 83 has an operation knob 83a. Hereinafter, the operation knob 83a may be referred to as the "second operation knob 83a." The second operation knob 83a has a protrusion shape. The second operation unit 83 has the second operation knob 83a, which makes it easier for the operator to operate the second operation unit 83.

[0052] Next, the lighting device 200A of this embodiment will be further described with reference to Fig. 8. As shown in Fig. 8, the lighting device 200A further includes a base member 9.

[0053] The base member 9 supports the rotation stopper 8 so that it can transition freely between a first state and a second state. More specifically, the base member 9 is connected to the opposing portion 81 of the rotation stopper 8. In this embodiment, the rotation stopper 8 and the base member 9 are made of a single member. In other words, the rotation stopper 8 is part of the base member 9.

[0054] When the rotation stopper 8 is in the second state, the base member 9 generates an elastic force that returns the rotation stopper 8 from the second state to the first state. The base member 9 and the rotation stopper 8 are made of, for example, resin.

[0055] According to this embodiment, after the operator sets the rotation stopper 8 to the second state, the operator can transition the state of the rotation stopper 8 from the second state to the first state by releasing his / her finger from the operation portion 83 of the rotation stopper 8. Therefore, an operation to transition the state of the rotation stopper 8 from the second state to the first state is not required. In other words, an operation to lock the rotation of the operation lever 7 is not required.

[0056] Furthermore, in this embodiment, rotation stopper 8 and base member 9 are made of a single member. Therefore, according to this embodiment, it is possible to lock the rotation of operating lever 7 with a smaller number of parts. This reduces the assembly man-hours and material costs of lighting device 200A.

[0057] Next, the configuration of rotation stopper 8 will be further described with reference to Figures 6, 7, 8, and 10. Figure 10 is a side view showing a portion of lighting fixture 200A of this embodiment. Note that Figure 10 shows operating lever 7 in first rotation position P1. Figure 10 also shows rotation stopper 8 in the first state. As shown in Figure 10, rotation restricting protrusion 82 has a contact surface 82a and an inclined surface 82b.

[0058] The abutment surface 82a is a surface that abuts the connecting portion 72 of the operating lever 7 that rotates in the first rotation direction RD1 (FIG. 6) from the first rotation position P1 (FIG. 7) to the second rotation position P2 (FIG. 8) when the rotation stopper 8 is in the first state. The abutment surface 82a is disposed on the first rotation position P1 (FIG. 7) side of the inclined surface 82b. The abutment surface 82a protrudes upward from the opposing portion 81 when the rotation stopper 8 is in the first state. When the operating lever 7 rotates in the first rotation direction RD1, the connecting portion 72 of the operating lever 7 abuts against the abutment surface 82a of the rotation restricting protrusion 82, thereby preventing the operating lever 7 from rotating in the first rotation direction RD1 from the first rotation position P1 to the second rotation position P2.

[0059] 10, the abutment surface 82a is oriented perpendicular to the opposing portion 81. Therefore, when the rotation stopper 8 is in the first state, the abutment surface 82a is parallel to the vertical direction. Therefore, when the rotation stopper 8 is in the first state, the abutment surface 82a is oriented perpendicular to the rotation trajectory of the connecting portion 72 of the operating lever 7. In other words, when the rotation stopper 8 is in the first state, the abutment surface 82a is oriented perpendicular to the first rotation direction RD1 and the second rotation direction RD2.

[0060] The inclined surface 82b is connected to the tip of the contact surface 82a. Here, the tip of the contact surface 82a refers to the portion of the contact surface 82a that is farthest from the opposing portion 81. The tip of the contact surface 82a is the upper end of the contact surface 82a when the rotation stopper 8 is in the first state. The inclined surface 82b is disposed on the second rotation position P2 (FIG. 8) side with respect to the contact surface 82a, and extends obliquely from the tip of the contact surface 82a toward the opposing portion 81. In other words, the inclined surface 82b is inclined so as to move away from the opposing portion 81 the closer it is to the operating lever 7 that is positioned at the first rotation position P1.

[0061] The operating lever 7 slides on the inclined surface 82b when rotating in the second rotation direction RD2 from the second rotation position P2 to the first rotation position P1. As a result, the rotation of the operating lever 7 is not locked when the position of the plug unit 6 is switched from the second position to the first position. Therefore, the operator does not need to perform an operation to release the lock when switching the position of the plug unit 6 from the second position to the first position. Specifically, the operator can rotate the operating lever 7 without operating the operating part 83 of the rotation stopper 8. Note that when the operating lever 7 slides on the inclined surface 82b, the operating part 83 of the rotation stopper 8 may move in the second direction D2. In other words, the rotation stopper 8 may be pressed down by the operating lever 7 sliding on the inclined surface 82b.

[0062] Next, the lighting fixture 200A of this embodiment will be further described with reference to Figures 5 and 6. As shown in Figures 5 and 6, the housing 3 has a side surface 3b. The side surface 3b is a surface parallel to the first direction D1 (the longitudinal direction of the duct rail 100). The operating part 71 of the operating lever 7 and the operating part 83 of the rotation stopper 8 are disposed on the side surface 3b of the housing 3.

[0063] According to the present embodiment, the operating portion 71 of the operating lever 7 and the operating portion 83 of the rotation stopper 8 are not arranged on a plane perpendicular to the first direction D1. Therefore, when attaching multiple lighting fixtures 200A to the duct rail 100, the multiple lighting fixtures 200A can be arranged with no or almost no gaps between the housings 3 of the multiple lighting fixtures 200A.

[0064] When the operating lever 7 is located at the first rotation position P1, the operating portion 71 of the operating lever 7 is disposed in a recess or notch provided in the side surface 3b of the housing 3. When the operating portion 71 of the operating lever 7 is disposed in the recess or notch provided in the side surface 3b of the housing 3, the operating portion 71 of the operating lever 7 and the side surface 3b of the housing 3 are flush with each other. Alternatively, the operating portion 71 of the operating lever 7 protrudes slightly from the side surface 3b of the housing 3.

[0065] Furthermore, when the operating lever 7 is located at the first rotation position P1, the connecting portion 72 of the operating lever 7 is disposed in a recess or notch provided in the side surface 3b of the housing 3. When the connecting portion 72 of the operating lever 7 is disposed in the recess or notch provided in the side surface 3b of the housing 3, the connecting portion 72 of the operating lever 7 and the side surface 3b of the housing 3 are flush with each other. Alternatively, the connecting portion 72 of the operating lever 7 protrudes slightly from the side surface 3b of the housing 3.

[0066] Similarly, the operating portion 83 of the rotation stopper 8 is disposed in a recess or notch provided in the side surface 3b of the housing 3. More specifically, the operating portion 83 of the rotation stopper 8 is disposed in a recess or notch provided in the side surface 3b of the housing 3 so that the operating portion 83 of the rotation stopper 8 and the side surface 3b of the housing 3 are flush with each other. Alternatively, the operating portion 83 of the rotation stopper 8 may protrude slightly from the side surface 3b of the housing 3.

[0067] 1 to 10, the first embodiment has been described above. According to the first embodiment, it is possible to reduce erroneous operation of the operating lever 7 without providing a component that covers the operating lever 7. Furthermore, when the plug portion 6 is in the first posture, the rotation stopper 8 can prevent the operating lever 7 from rotating in the first rotation direction RD1 from the first rotation position P1 to the second rotation position P2, thereby preventing the plug portion 6 from being accidentally detached from the duct rail 100.

[0068] Next, a modified example of the rotation restricting protrusion 82 will be described with reference to Fig. 11. Fig. 11 is a diagram showing a modified example of the rotation restricting protrusion 82. The rotation restricting protrusion 82 shown in Fig. 11 has a different attitude of the abutment surface 82a from the rotation restricting protrusion 82 shown in Fig. 10.

[0069] The contact surface 82a shown in FIG. 11 is inclined with respect to the opposing portion 81. Specifically, the contact surface 82a shown in FIG. 11 is inclined toward the first rotation position P1 (FIG. 7). More specifically, the contact surface 82a shown in FIG. 11 protrudes obliquely from the opposing portion 81 so as to approach the operating lever 7 located at the first rotation position P1. In other words, the contact surface 82a shown in FIG. 11 is inclined so that the further away from the opposing portion 81 it is, the closer it is to the operating lever 7 located at the first rotation position P1. Therefore, the angle θ between the contact surface 82a and the opposing portion 81 (the angle on the first rotation position P1 side) is an acute angle.

[0070] According to the modification shown in FIG. 11, the rotation restricting protrusion 82 can more likely prevent the operating lever 7 from rotating in the first rotation direction RD1 from the first rotation position P1 to the second rotation position P2.

[0071] For example, there is a possibility that the rotation stopper 8 may tilt toward the second rotation position P2 ( FIG. 8 ) due to rattle or dimensional error of the rotation stopper 8. If the orientation of the abutment surface 82a is perpendicular to the opposing portion 81, when the rotation stopper 8 tilts toward the second rotation position P2, the abutment surface 82a assumes an orientation that tilts away from the operating lever 7, which is positioned at the first rotation position P1, the further away it is from the opposing portion 81. In this case, when the operating lever 7 rotates in the first rotation direction RD1 from the first rotation position P1 to the second rotation position P2, it may slide on the abutment surface 82a, and the rotation of the operating lever 7 may not be prevented.

[0072] 11 , even when the rotation stopper 8 is tilted toward the second rotation position P2, the abutment surface 82a is less likely to be inclined so as to move away from the operating lever 7 located at the first rotation position P1 the further away from the opposing portion 81 it is. In other words, even when the rotation stopper 8 is tilted toward the second rotation position P2, the abutment surface 82a is inclined so as to move closer to the operating lever 7 located at the first rotation position P1 the further away from the opposing portion 81 it is. Alternatively, even when the rotation stopper 8 is inclined toward the second rotation position P2, the abutment surface 82a is in a position perpendicular to the rotation trajectory of the connecting portion 72 of the operating lever 7. Therefore, it is possible to further increase the likelihood that the rotation of the operating lever 7 in the first rotation direction RD1 from the first rotation position P1 to the second rotation position P2 will be blocked.

[0073] [Embodiment 2] Next, a second embodiment will be described with reference to Figures 12 to 14. However, differences from the first embodiment will be described, and a description of the same aspects as in the first embodiment will be omitted. The second embodiment differs from the first embodiment in that lighting device 200B further includes mounting member 11.

[0074] Fig. 12 is a perspective view showing a lighting fixture 200B of this embodiment. As shown in Fig. 12, the lighting fixture 200B has substantially the same configuration as the lighting fixture 200A described in embodiment 1. Unlike the lighting fixture 200A, the lighting fixture 200B further includes a mounting member 11.

[0075] In this embodiment, the attachment member 11 is fixed to the opposing surface 3a of the housing 3. More specifically, the attachment member 11 is arranged at a position far from the plug portion 6. For example, the plug portion 6 is arranged at one end of the housing 3 in the longitudinal direction, and the attachment member 11 is arranged at the other end of the housing 3 in the longitudinal direction. One end of the linear member 12 is fixed to the attachment member 11. Therefore, one end of the linear member 12 is fixed to the housing 3. The linear member 12 is, for example, a wire.

[0076] Fig. 13 is a perspective view showing a portion of a lighting fixture 200B of this embodiment. More specifically, Fig. 13 shows the lighting fixture 200B attached to a duct rail 100. As shown in Fig. 13, a connecting member 13 is fixed to the other end of the linear member 12. The connecting member 13 is detachably attached to the duct rail 100.

[0077] 14 is a perspective view showing the connecting member 13. The connecting member 13 has a support portion 131 and a rail engaging portion 132. The rail engaging portion 132 is provided on the circumferential surface of the support portion 131. The rail engaging portion 132 engages with the plug support portion 103 (FIG. 2) of the duct rail 100.

[0078] Embodiment 2 has been described above with reference to FIGS. 12 to 14 . With respect to the lighting fixture 200B of this embodiment, Japanese Utility Model Application Publication No. 63-8517 (hereinafter referred to as “Patent Document 2”) discloses a structure in which one end of a wire is fixed to a hanging arm of a spotlight (lamp body). However, with the structure of Patent Document 2, there is a risk of interference between the spotlight (lamp body) and the wire when rotating or tilting the spotlight (lamp body). Interference between the spotlight (lamp body) and the wire may prevent the spotlight (lamp body) from rotating or tilting smoothly. Furthermore, there is a risk of the spotlight (lamp body) being damaged by the wire. In contrast, according to this embodiment, one end of the linear member 12 is fixed to the housing 3, so that interference between the linear member 12 and the lighting fixture body 2 is unlikely when rotating or tilting the lighting fixture body 2. Therefore, the lighting fixture body 2 can be rotated and tilted smoothly. Furthermore, the lighting fixture body 2 is unlikely to be damaged by the linear member 12.

[0079] Furthermore, according to this embodiment, one end of the linear member 12 is fixed to the opposing surface 3a of the housing 3. Therefore, one end of the linear member 12 can be fixed to a portion of the lighting fixture 200B that is relatively close to the duct rail 100. As a result, a relatively short linear member 12 can be used. Therefore, in the unlikely event that the plug portion 6 comes off the duct rail 100 and the lighting fixture 200B falls, the impact load acting on the linear member 12 can be reduced.

[0080] Illumination device 200B may further include linear member 12 and connecting member 13.

[0081] [Embodiment 3] Next, a third embodiment will be described with reference to Figures 15 and 16. However, differences from the first and second embodiments will be described, and a description of the same aspects as the first and second embodiments will be omitted. The third embodiment differs from the first and second embodiments in the positional relationship between the plug portion 6 and the connecting arm portion 4.

[0082] Fig. 15 is a front view showing lighting fixture 200C of this embodiment. Fig. 16 is a cross-sectional view of lighting fixture 200C taken along line AA in Fig. 15. As shown in Figs. 15 and 16, lighting fixture 200C has substantially the same configuration as lighting fixture 200A described in the first embodiment.

[0083] 16, the plug unit 6 and the connecting arm unit 4 are disposed on one longitudinal side of the housing 3. The plug unit 6 is disposed between the power supply device 5 and the connecting arm unit 4. Therefore, when the lighting fixture 200C is viewed from the duct rail 100 (FIG. 2) side, the plug unit 6 and the connecting arm unit 4 are disposed in positions where they do not overlap each other.

[0084] The lighting fixture body 2 is rotatable about the second axis X2. The second axis X2 is the central axis of the connecting arm portion 4. In this embodiment, the second axis X2 extends in the vertical direction. When the lighting fixture 200C is viewed from the duct rail 100 (FIG. 2) side, the second axis X2 is located at a position different from the first axis X1.

[0085] Embodiment 3 has been described above with reference to FIGS. 15 and 16 . In contrast to the lighting fixture 200C of this embodiment, Japanese Patent Application Laid-Open Publication No. 2008-4455 (hereinafter referred to as “Patent Document 3”) discloses a spotlight in which an arm and a plug are arranged on one longitudinal side of a base, and the arm and the plug overlap when viewed from above. However, the spotlight of Patent Document 3 has poor weight balance around the plug. As a result, the other longitudinal side of the base may sag from the duct rail. Here, the other longitudinal side of the base is opposite to the side on which the arm and plug are arranged. In contrast, according to this embodiment, compared to a configuration in which the plug 6 and the connecting arm 4 overlap when viewed from the duct rail 100 side, the lighting fixture 200C has good weight balance around the plug 6, thereby reducing the possibility of the other longitudinal side of the housing 3 sagging from the duct rail 100. Here, the other longitudinal side of the housing 3 is opposite to the side on which the connecting arm 4 and the plug 6 are arranged.

[0086] Furthermore, if the plug portion 6 and the connecting arm portion 4 overlap when viewed from the duct rail 100 side, it is necessary to place the connecting arm portion 4 directly below the plug portion 6, making it difficult to reduce the height dimension H (vertical width) of the housing 3. In contrast, according to this embodiment, the plug portion 6 and the connecting arm portion 4 do not overlap when viewed from the duct rail 100 side, making it easy to reduce the height dimension H (vertical width) of the housing 3.

[0087] [Embodiment 4] Next, a fourth embodiment will be described with reference to Figures 17 to 25. However, differences from the first to third embodiments will be described, and a description of the same aspects as the first to third embodiments will be omitted. The fourth embodiment differs from the first to third embodiments in that the lighting device 300A includes an accessory 160 (see Figure 20).

[0088] First, the lighting fixture 300A of this embodiment will be described with reference to Fig. 17. Fig. 17 is a side view showing the lighting fixture 300A of this embodiment. As shown in Fig. 17, the lighting fixture 300A of this embodiment is a downlight, and is attached to a ceiling C. More specifically, the lighting fixture 300A is embedded in the ceiling C.

[0089] 17, lighting fixture 300A includes light source unit 310, fixing frame 320, and mounting spring 330. For ease of explanation, the side on which fixing frame 320 is disposed relative to light source unit 310 is defined as the "lower side," and the side on which light source unit 310 is disposed relative to fixing frame 320 is defined as the "upper side," thereby defining the up-down direction. Here, "up" and "down" correspond to "up" and "down" when lighting fixture 300A is attached to ceiling C.

[0090] The light source unit 310 generates light. The light generated in the light source unit 310 is emitted from the bottom surface of the fixed frame 320. The light source unit 310 is rotatably attached to the fixed frame 320. The light source unit 310 is rotatable around a third axis X3. More specifically, the light source unit 310 has a lamp body 311 and a light leakage prevention part 312, and the light leakage prevention part 312 is rotatably attached to the fixed frame 320. In this embodiment, the third axis X3 extends in the vertical direction.

[0091] The mounting spring 330 is fixed to the fixed frame 320. The mounting spring 330 mounts the fixed frame 320 to a mounting position. In this embodiment, the mounting position is the ceiling C.

[0092] Next, a lighting fixture 300A of this embodiment will be described with reference to Fig. 18. Fig. 18 is a front view showing the lighting fixture 300A of this embodiment. As shown in Fig. 18, the lighting fixture body 311 is tiltable relative to the light leakage prevention portion 312, with the fourth axis X4 as the central axis. More specifically, the lighting fixture body 311 is tiltable rearward relative to the light leakage prevention portion 312.

[0093] The light leakage prevention portion 312 prevents light from leaking between the lighting fixture main body 311 and the fixing frame 320 when the lighting fixture main body 311 tilts rearward relative to the light leakage prevention portion 312. Specifically, the light leakage prevention portion 312 prevents a gap from occurring between the lighting fixture main body 311 and the fixing frame 320 when the lighting fixture main body 311 tilts rearward relative to the light leakage prevention portion 312. Alternatively, the light leakage prevention portion 312 reduces a gap that occurs between the lighting fixture main body 311 and the fixing frame 320 when the lighting fixture main body 311 tilts rearward relative to the light leakage prevention portion 312.

[0094] Next, the lighting fixture 300A of this embodiment will be further described with reference to Figures 19 and 20. Figure 19 is a bottom view showing the lighting fixture 300A of this embodiment. Figure 20 is a cross-sectional view of the lighting fixture 300A taken along line BB in Figure 19.

[0095] 19, fixing frame 320 has opening 320a on its bottom surface. Hereinafter, opening 320a of fixing frame 320 may be referred to as "bottom opening 320a." Light generated in lighting device 300A is emitted from bottom opening 320a of fixing frame 320 to the outside of lighting device 300A.

[0096] 20, the lighting fixture main body 311 has a lighting fixture housing 311a, a light source 151, and a reflecting member 152. The light source 151 and the reflecting member 152 are disposed inside the lighting fixture housing 311a.

[0097] The light source 151 generates light. The light generated from the light source 151 is emitted from the lighting fixture housing 311a toward the fixed frame 320, passes through the fixed frame 320, and is emitted to the outside of the lighting fixture 300A from a bottom opening 320a of the fixed frame 320. The light source 151 has, for example, an LED element as a light-emitting element. The light source 151 is, for example, an SMD or COB. In this embodiment, the light source 151 is a planar light source.

[0098] The reflecting member 152 is disposed below the light source 151. The reflecting member 152 is cylindrical with openings at the top and bottom ends. More specifically, the diameter of the reflecting member 152 gradually increases with increasing distance from the light source 151. For example, the reflecting member 152 is substantially frustum-shaped. When viewed from above and below, the opening at the top end of the reflecting member 152 overlaps with the light source 151.

[0099] Light generated from light source 151 is emitted to the inside of reflecting member 152 from an opening at the top end of reflecting member 152. A part of the light emitted to the inside of reflecting member 152 is reflected by the inner surface of reflecting member 152.

[0100] As shown in FIG. 20, the lighting fixture 300A further includes an accessory 160. The accessory 160 controls the characteristics of the light emitted from the lighting fixture 300A. The accessory 160 is disposed inside the reflective member 152. The accessory 160 is an optional part of the lighting fixture 300A, and is detachable from the lighting fixture body 311. In this embodiment, the accessory 160 is a first accessory 160A. The first accessory 160A has a flare cut louver 164A (see FIG. 21).

[0101] Next, the accessory 160 (first accessory 160A) will be described with reference to Fig. 21 and Fig. 22. Fig. 21 is a perspective view showing the accessory 160. In detail, Fig. 21 shows the accessory 160 as seen obliquely from above. Fig. 22 is another perspective view showing the accessory 160. In detail, Fig. 22 shows the accessory 160 as seen obliquely from below.

[0102] 21, accessory 160 includes frame 161 and functional part 164. Frame 161 supports functional part 164. Functional part 164 controls the characteristics of light emitted from lighting fixture 300A. In first accessory 160A, functional part 164 is a flare cut louver 164A.

[0103] As shown in FIG. 21 , the accessory 160 further includes magnets 163. In this embodiment, the accessory 160 includes four magnets 163. The magnets 163 are provided on the frame body 161. In this embodiment, the magnets 163 are arranged on the upper surface of the frame body 161. The magnets 163 are components that cause the lamp housing 311a to hold the accessory 160. In this embodiment, the accessory 160 is held in the lamp housing 311a by the magnetic force of the magnets 163.

[0104] The frame body 161 is annular and has a light passing area 162 through which light L generated from the light source 151 described with reference to Fig. 20 passes. The light passing area 162 indicates the inner space of the frame body 161. The magnet 163 is disposed at a position that does not overlap with the light passing area 162.

[0105] As shown in Fig. 22, the frame 161 has a main body 170 and a first protrusion 171. The main body 170 is annular. The first protrusion 171 is connected to the main body 170. Specifically, the first protrusion 171 is provided on the side of the frame 161 opposite to the side on which the light source 151 (Fig. 20) is arranged. In this embodiment, the first protrusion 171 is provided on the lower side of the main body 170.

[0106] The first protrusion 171 protrudes from the main body 170. Specifically, the first protrusion 171 protrudes in the direction in which light L passes through the light passing region 162. In this embodiment, the first protrusion 171 is annular, and the diameter of the outer circumferential surface of the first protrusion 171 is smaller than the diameter of the outer circumferential surface of the main body 170.

[0107] According to this embodiment, the frame body 161 has the first protrusion 171, which makes it easier for an operator to remove the accessory 160. Specifically, when removing the accessory 160 attached to the lighting fixture housing 311a described with reference to Fig. 20, the operator can grasp the first protrusion 171 with his or her fingers. This makes it easier to remove the accessory 160.

[0108] As shown in FIG. 22 , the frame 161 further has second protrusions 172. In this embodiment, the frame 161 has four second protrusions 172. The second protrusions 172 protrude in a direction intersecting the direction in which light L passes through the light passing region 162. The second protrusions 172 are provided on the lower side of the main body 170. In other words, the second protrusions 172 are provided on the side of the frame 161 opposite to the side on which the light source 151 ( FIG. 20 ) is disposed. In this embodiment, the second protrusions 172 protrude from the first protrusions 171.

[0109] According to this embodiment, the frame 161 has the second protrusion 172, which makes it easier for an operator to adjust the rotational position of the accessory 160. Specifically, when adjusting the rotational position of the accessory 160 attached to the lighting fixture housing 311a described with reference to FIG. 20, the operator can hook his / her finger on the second protrusion 172 and rotate the accessory 160. This facilitates the adjustment of the rotational position of the accessory 160. The rotational position of the accessory 160 is adjusted when the light distribution characteristics of the light emitted from the lighting device 300A change depending on the rotational position of the accessory 160. For example, the rotational position of the accessory 160 is adjusted when the functional unit 164 is a spread lens 164B (FIG. 23).

[0110] Next, the accessory 160 will be further described with reference to Figures 23 to 25. In this embodiment, the frame body 161 and the functional unit 164 are separate parts, and the functional unit 164 can be detached from the frame body 161. Therefore, the frame body 161 can be shared among various accessories 160. As a result, the cost of the various accessories 160 can be reduced.

[0111] Here, the second accessory 160B to the fourth accessory 160D will be described with reference to FIGS. 23 to 25. FIG. 23 is a perspective view showing the second accessory 160B. FIG. 24 is a perspective view showing the third accessory 160C. FIG. 25 is a perspective view showing the fourth accessory 160D. As shown in FIG. 23, the second accessory 160B has a spread lens 164B as the functional part 164. As shown in FIG. 24, the third accessory 160C has a honeycomb louver 164C as the functional part 164. As shown in FIG. 25, the fourth accessory 160D has a spread lens 164D as the functional part 164.

[0112] According to this embodiment, the first accessory 160A to the fourth accessory 160D can share the frame body 161. Therefore, the costs of the first accessory 160A to the fourth accessory 160D can be reduced.

[0113] Above, the fourth embodiment has been described with reference to FIGS. 17 to 25. In contrast to the lighting fixture 300A and accessory 160 of this embodiment, Japanese Patent Laid-Open Publication No. 2015-228383 (hereinafter referred to as "Patent Document 4") discloses a lamp accessory in which an accessory is held to a lens by a magnet. However, in the lamp accessory of Patent Document 4, the magnet is disposed at the center of the accessory and the lens. As a result, the magnet may block light, resulting in uneven lighting. In contrast, according to this embodiment, the magnet 163 is disposed in a position that does not overlap with the light passage area 162. Therefore, the magnet 163 does not block light L, thereby suppressing uneven lighting.

[0114] In this embodiment, the lighting fixture 300A is a downlight, but the lighting fixture 300A is not limited to a downlight and may be, for example, a spotlight.

[0115] [Embodiment 5] Next, a fifth embodiment will be described with reference to Figures 26 to 30. However, differences from the first to fourth embodiments will be described, and a description of the same aspects as the first to fourth embodiments will be omitted. The fifth embodiment differs from the first to fourth embodiments in that a load is applied to the light source unit 310.

[0116] Fig. 26 is a perspective view showing a lighting fixture 300B of this embodiment. Fig. 27 is a perspective view showing a portion of lighting fixture 300B of this embodiment. As shown in Figs. 26 and 27, lighting fixture 300B of this embodiment has substantially the same configuration as lighting fixture 300A described in embodiment 4. Unlike lighting fixture 300A, lighting fixture 300B includes a pressing portion 350.

[0117] 27, lighting device 300B further includes holding member 340 and pressing portion 350. Light leakage restricting portion 312 also includes support member 313.

[0118] The support member 313 is rotatably supported by the fixed frame 320. The fixed frame 320 rotatably supports the support member 313, thereby rotatably supporting the light source unit 310. The holding member 340 is fixed to the fixed frame 320 and causes the fixed frame 320 to hold the support member 313. The pressing portion 350 presses the support member 313. When the pressing portion 350 presses the support member 313, a load is applied to the support member 313. As a result, the light source unit 310 does not rotate easily.

[0119] Next, the light source unit 310 will be described with reference to Fig. 28. Fig. 28 is a perspective view showing the light source unit 310. As shown in Fig. 28, the support member 313 is an annular plate member. The support member 313 is disposed below the light source unit 310.

[0120] Next, the fixed frame 320 will be described with reference to FIG. 29. FIG. 29 is a perspective view showing the fixed frame 320. As shown in FIG. 29, the fixed frame 320 has a mounting portion 322 on which the support member 313 described with reference to FIG. 28 is mounted. When the light source unit 310 rotates, the support member 313 slides on the mounting portion 322 while being mounted on the mounting portion 322. When the holding member 340 described with reference to FIG. 27 is fixed to the fixed frame 320, it covers the support member 313 mounted on the mounting portion 322. As a result, the support member 313 is held by the fixed frame 320.

[0121] Next, the holding member 340 will be described with reference to Fig. 30. Fig. 30 is an exploded perspective view of the holding member 340. As shown in Fig. 30, the holding member 340 has a first holding member 341 and a second holding member 343. In addition, the pressing portion 350 includes a first pressing portion 351 and a second pressing portion 352.

[0122] The first holding member 341 is plate-shaped. The first holding member 341 has a first holding portion 342 and a first pressing portion 351. In this embodiment, the first holding member 341 has three first pressing portions 351.

[0123] The first holding portion 342 is annular. The first pressing portion 351 is provided on the inner circumferential side of the first holding portion 342 and is connected to the first holding portion 342. In this embodiment, the first pressing portion 351 is a part of the first holding member 341. Specifically, the first pressing portion 351 is formed by cutting and raising.

[0124] The first holding member 341 is an elastic member. The first pressing portion 351 is deformed so as to constantly apply a load to the support member 313 shown in Fig. 28. Therefore, the first pressing portion 351 presses the support member 313 shown in Fig. 28 by elastic force. In other words, the first pressing portion 351 functions as a spring.

[0125] The second holding member 343 has a second holding portion 344 and a second pressing portion 352. In this embodiment, the second holding member 343 has two second pressing portions 352. The configuration of the second holding member 343 is substantially the same as that of the first holding member 341, and therefore a detailed description thereof will be omitted.

[0126] Next, lighting device 300B of this embodiment will be further described with reference to Fig. 27. As shown in Fig. 27, fixed frame 320 has rotation restricting portion 321. Light source unit 310 also has abutting portion 314. More specifically, light leakage restricting portion 312 has abutting portion 314.

[0127] When the light source unit 310 rotates, the contact portion 314 comes into contact with the rotation restricting portion 321. When the contact portion 314 comes into contact with the rotation restricting portion 321, the rotation of the light source unit 310 is restricted.

[0128] In the present embodiment, the pressing portion 350 is disposed near the rotation restricting portion 321. As a result, the support member 313 is pressed by the pressing portion 350 near the rotation restricting portion 321, and therefore, it is possible to prevent the support member 313 from floating up near the rotation restricting portion 321. Therefore, the abutting portion 314 is brought into abutment with the rotation restricting portion 321, and the rotation of the light source unit 310 can be restricted.

[0129] Embodiment 5 has been described above with reference to FIGS. 26 to 30. In contrast to the lighting fixture 300B of this embodiment, Japanese Patent Application Laid-Open Publication No. 2009-176594 (hereinafter referred to as "Patent Document 5") discloses a lighting fixture including a frame, a rotating unit, a press plate, a lighting fixture, an arm, and a terminal block. The frame is embedded in the ceiling. The rotating unit is mounted on the upper part of the frame so as to be rotatable horizontally. The press plate rotatably holds down the rotating unit. The lighting fixture is mounted on the rotating unit. The arm is attached to the frame or the press plate via a support shaft so as to be able to stand upright. The terminal block is mounted at the tip of the arm. However, in the lighting fixture of Patent Document 5, fluctuations in tension in the cable connected to the terminal block may cause the rotational position of the lighting fixture to fluctuate. For example, after an operator rotates the lighting fixture, fluctuations in tension in the cable may cause the lighting fixture to rotate and return to its original rotational position. Furthermore, when the lighting fixture is installed on a sloped ceiling, the lighting fixture may rotate spontaneously, causing the light emission direction to fluctuate. In contrast, according to this embodiment, the pressing portion 350 presses the support member 313, so that the support member 313 is constantly under load from the pressing portion 350. As a result, even if the tension in the cable fluctuates, the rotational position of the light source unit 310 does not easily fluctuate. Therefore, even if the tension in the cable fluctuates after an operator rotates the light source unit 310, the light source unit 310 can be prevented from rotating in response to the fluctuation in the cable tension. Furthermore, when the lighting fixture 300B is installed on a sloped ceiling, the light source unit 310 can be prevented from rotating spontaneously, causing the light emission direction to fluctuate.

[0130] Furthermore, according to this embodiment, the pressing portion 350 is formed by cutting and raising the holding member 340. Therefore, it is possible to suppress rotation of the light source unit 310 without increasing the number of parts.

[0131] [Embodiment 6] Next, embodiment 6 will be described with reference to Figures 31 to 35. However, differences from embodiments 1 to 5 will be described, and a description of the same aspects as embodiments 1 to 5 will be omitted. Embodiment 6 differs from embodiments 1 to 5 in that lighting device 200D includes louver portion 24.

[0132] Fig. 31 is a front view showing a lighting fixture 200D of this embodiment. Fig. 32 is a perspective view showing the louver portion 24. As shown in Fig. 31, the lighting fixture 200D of this embodiment is a spotlight. The lighting fixture 200D has substantially the same configuration as the lighting fixture 200A described in embodiment 1. Unlike the lighting fixture 200A, the lighting fixture 200D further includes a louver portion 24. The louver portion 24 is a flare-cut louver.

[0133] More specifically, as shown in Figure 31, the lighting fixture main body 2 has a reflective member 22 and a lighting fixture housing 23. The light source 21 and the reflective member 22 are disposed inside the lighting fixture housing 23. The louver portion 24 is disposed inside the reflective member 22. For ease of explanation, the side on which the louver portion 24 is disposed relative to the light source 21 is defined as the "front side," and the side on which the light source 21 is disposed relative to the louver portion 24 is defined as the "rear side," thereby defining the front-to-rear direction.

[0134] 31 and 32, the louver section 24 has inner louvers 241 and outer louvers 242. The inner louvers 241 are cylindrical and extend in the front-to-rear direction. The outer louvers 242 are disposed outside the inner louvers 241. The outer louvers 242 are cylindrical and extend in the front-to-rear direction.

[0135] Figure 33 is a cross-sectional view of the lighting fixture body 2 taken along line CC in Figure 31. As shown in Figure 33, the reflective member 22 is disposed in front of the light source 21. The reflective member 22 is cylindrical with openings at the front and rear ends. More specifically, the diameter of the reflective member 22 gradually increases with increasing distance from the light source 21. For example, the reflective member 22 is substantially truncated cone-shaped. When viewed from the front-to-rear direction, the opening at the rear end of the reflective member 22 overlaps with the light source 21.

[0136] Light generated from light source 21 is emitted to the inside of reflecting member 22 from an opening at the rear end of reflecting member 22. A portion of the light emitted to the inside of reflecting member 22 is reflected forward by the inner surface of reflecting member 22. Another portion of the light emitted to the inside of reflecting member 22 passes through inner louvers 241 or outer louvers 242. Note that louver portion 24 is a low-reflection member. Therefore, most of the light that hits louver portion 24 is absorbed by louver portion 24 without being reflected. For example, a low-reflection layer may be provided on the surface of louver portion 24. Specifically, the surface of louver portion 24 may be painted black. However, the louver portion 24 is not limited to a configuration in which a low-reflection layer is provided on the surface of louver portion 24, as long as it is configured to attenuate light that enters louver portion 24 and emit it.

[0137] Because the louver portion 24 is made of a low-reflection material, it is possible to reduce unnecessary light components that cause flare (ring-shaped light and dark) on the illuminated surface. This reduces flare on the illuminated surface. Furthermore, because the louver portion 24 is made of a low-reflection material, it is possible to reduce the amount of light that is emitted diagonally forward from the louver portion 24. As a result, less light enters the field of view of a user positioned diagonally forward of the lighting fixture body 2, thereby reducing glare.

[0138] Next, lighting fixture 200D of this embodiment will be further described with reference to Fig. 34 and Fig. 35. Fig. 34 is a diagram showing the configuration of lighting fixture body 2 included in lighting fixture 200D of this embodiment. Fig. 35 is a diagram showing the configuration of lighting fixture body 2 according to Comparative Example 1.

[0139] 34, the light source 21 is a planar light source and has a light-emitting surface 21a that emits light. When a virtual line connecting an end 21b of the light-emitting surface 21a on one side with respect to an optical axis LX extending forward from the center of the light-emitting surface 21a and a front end 22a of the reflecting member 22 on the other side with respect to the optical axis LX is defined as a reference line HL, the rear end 242a of the outer louver 242 is located outside the reference line HL.

[0140] As described above, according to this embodiment, the rear end 242a of the outer louver 242 is located outside the reference line HL. As a result, the light emitted from the light source 21 is less likely to hit the front end 22a of the reflecting member 22. Therefore, even if the front end 22a of the reflecting member 22 is curved, ring-shaped unevenness in light is less likely to occur on the light-irradiated surface. Note that when the reflecting member 22 is fabricated by spinning a metal material such as aluminum, the front end 22a of the reflecting member 22 is likely to be curved.

[0141] 35 , when the rear end 242a of the outer louver 242 is located inside the reference line HL, light is more likely to strike the front end 22a of the reflecting member 22. When the front end 22a of the reflecting member 22 is curved, light that strikes the front end 22a of the reflecting member 22 is diffused further outward than light that strikes a portion of the reflecting member 22 behind the front end 22a. As a result, ring-shaped unevenness of light is more likely to occur on the illuminated surface. In contrast, according to this embodiment, light directed toward the front end 22a of the reflecting member 22 is blocked by the outer louver 242, making it less likely that ring-shaped unevenness of light will occur on the illuminated surface.

[0142] Louver portion 24 will be further described with reference to Figure 34. As shown in Figure 34, in this embodiment, rear end 241a of inner louver 241 is located inside reference line HL. This makes it possible to prevent a reduction in the amount of light emitted from lighting device 200D. However, rear end 241a of inner louver 241 may be located outside reference line HL. By positioning rear end 241a of inner louver 241 outside reference line HL, it becomes even more difficult for light to strike front end 22a of reflecting member 22.

[0143] Above, the sixth embodiment has been described with reference to FIGS. 31 to 35. For lighting device 200D of this embodiment, International Publication No. 2016 / 031957 discloses a sharpener in which the rear ends of the outer louvers and the inner louvers are located inside the reference line HL. However, as already explained, when the rear ends of the outer louvers and the inner louvers are located inside the reference line HL, uneven light may occur on the illuminated surface. In contrast, according to this embodiment, as already explained, ring-shaped uneven light is less likely to occur on the illuminated surface.

[0144] Furthermore, according to this embodiment, even if the front end 22a of the reflecting member 22 is curved, ring-shaped uneven light is unlikely to occur on the light irradiation surface. Therefore, there is no need to process the reflecting member 22 with high precision, and the reflecting member 22 can be easily formed.

[0145] In this embodiment, the rear end 242a of the outer louvers 242 is located outside the reference line HL, but if the rear end 241a of the inner louvers 241 is located outside the reference line HL, the rear end 242a of the outer louvers 242 may be located inside the reference line HL. In other words, it is sufficient that at least one of the rear end 242a of the outer louvers 242 and the rear end 241a of the inner louvers 241 is located outside the reference line HL.

[0146] Furthermore, although the lighting fixture 200D is a spotlight in this embodiment, the lighting fixture 200D is not limited to a spotlight and may be, for example, a downlight.

[0147] [Embodiment 7] Next, a seventh embodiment will be described with reference to Figs. 36 and 37. However, differences from the first to sixth embodiments will be described, and explanation of the same aspects as the first to sixth embodiments will be omitted. The seventh embodiment differs from the first to sixth embodiments in the configuration of the louver portion 24. Fig. 36 is a diagram showing the configuration of the lighting fixture body 2 included in a lighting fixture 200E of this embodiment. Fig. 37 is a diagram showing the configuration of the lighting fixture body 2 according to comparative example 2.

[0148] 36 , when an imaginary plane on which the front end 242b of the outer louver 242 is located is defined as a reference plane HS, the front end 241b of the inner louver 241 is located in front of the reference plane HS. In other words, the front end 241b of the inner louver 241 is positioned farther from the light source 21 than the front end 242b of the outer louver 242.

[0149] As described above, according to this embodiment, the front end 241b of the inner louver 241 is located forward of the reference plane HS. As a result, the number of times that the light L that strikes the inner surface of the inner louver 241 is reflected can be increased, and the amount of attenuation of the light that passes through the inner louver 241 can be increased. Therefore, flare is less likely to occur on the surface that is irradiated with the light L.

[0150] 37, when the front end 241b of the inner louver 241 is located behind the reference plane HS, the number of reflections of the light L that strikes the inner surface of the inner louver 241 is reduced. For example, the light L that strikes the inner surface of the inner louver 241 may pass through the inner louver 241 after only one reflection. Therefore, the attenuation of the light L may be insufficient, and flare may occur on the surface irradiated by the light L.

[0151] The inner louvers 241 may be made of a low-reflection material. When the inner louvers 241 are made of a low-reflection material, the amount of attenuation of light passing through the inner louvers 241 can be further increased. Therefore, flare is even less likely to occur on the surface irradiated with the light L. For example, a low-reflection layer may be provided on the inner surface of the inner louvers 241. Specifically, the inner surface of the inner louvers 241 may be painted black. However, the inner louvers 241 need only be configured to attenuate the light incident on the inner louvers 241 and emit the light, and are not limited to a configuration in which a low-reflection layer is provided on the inner surface of the inner louvers 241.

[0152] Above, the seventh embodiment has been described with reference to Figures 36 and 37. For lighting device 200E of this embodiment, International Publication No. 2016 / 163521 discloses a sharpener in which the front end of the inner louver portion is located behind the reference plane HS. However, as already explained, when the front end of the inner louver portion is located behind the reference plane HS, flare may occur on the surface illuminated by light. In contrast, according to this embodiment, as already explained, flare is less likely to occur on the surface illuminated by light L.

[0153] In this embodiment, the front end 241b of the inner louver 241 is located in front of the reference plane HS, but the front end 241b of the inner louver 241 may be located on the reference plane HS.

[0154] Furthermore, although the lighting fixture 200E is a spotlight in this embodiment, the lighting fixture 200E is not limited to a spotlight and may be, for example, a downlight.

[0155] [Embodiment 8] Next, embodiment 8 will be described with reference to Figures 38 to 42. However, differences from embodiments 1 to 7 will be described, and a description of the same aspects as embodiments 1 to 7 will be omitted. Embodiment 8 differs from embodiments 1 to 7 in that lighting device 300C includes linear member 181.

[0156] Fig. 38 is a perspective view showing a lighting device 300C of this embodiment. Fig. 39 is a perspective view showing a part of lighting device 300C of this embodiment. Note that linear member 181 is omitted from Fig. 39 for ease of understanding.

[0157] As shown in Fig. 38, lighting fixture 300C of this embodiment is a downlight. Lighting fixture 300C has substantially the same configuration as lighting fixture 300A described in embodiment 4. Unlike lighting fixture 300A, lighting fixture 300C further includes linear member 181 and anti-slip member 182. Also, as shown in Fig. 39, light source unit 310 has insertion hole 315. More specifically, light leakage prevention section 312 has insertion hole 315.

[0158] The linear member 181 is inserted into the insertion hole 315. The linear member 181 is, for example, a wire. The anti-slip member 182 is fixed to one end of the linear member 181. The anti-slip member 182 prevents the linear member 181 from coming off the insertion hole 315. As shown in FIG. 39 , the insertion hole 315 is an elongated hole that is long in the third direction D3. In this embodiment, the third direction D3 is the up-down direction.

[0159] Fig. 40 is a perspective view showing the fixed frame 320. Fig. 41 is another perspective view showing the fixed frame 320. In detail, Fig. 40 shows the fixed frame 320 as seen obliquely from above. Fig. 41 shows the fixed frame 320 as seen obliquely from below.

[0160] 40, fixed frame 320 has a frame base 360 ​​and a reflecting member 370. Hereinafter, reflecting member 370 may be referred to as a “second reflecting member 370.” Second reflecting member 370 is disposed inside frame base 360.

[0161] Second reflecting member 370 is detachable from frame 360. As shown in FIG. 41 , when removing second reflecting member 370 from frame 360, an operator removes second reflecting member 370 from bottom opening 320a of fixed frame 320 along third direction D3. Similarly, when attaching second reflecting member 370 to frame 360, an operator inserts second reflecting member 370 into frame 360 ​​from bottom opening 320a of fixed frame 320 along third direction D3. Therefore, insertion hole 315 described with reference to FIG. 39 extends in the direction in which second reflecting member 370 is attached or detached.

[0162] Fig. 42 is a perspective view showing second reflecting member 370. As shown in Fig. 42, fixing holes 371 to which fastening members B are fixed are formed on the peripheral surface of second reflecting member 370. The other end of linear member 181 is fixed to second reflecting member 370 by fastening member B. Fastening member B is, for example, a screw or a machine screw.

[0163] Above, the eighth embodiment has been described with reference to FIGS. 38 to 42. According to this embodiment, the insertion holes 315 extend in the direction in which the second reflecting member 370 is attached or detached. As a result, when the second reflecting member 370 is attached or detached to or from the frame 360, the linear members 181 are less likely to get caught on the edges of the insertion holes 315. This allows the second reflecting member 370 to be attached or detached smoothly. Furthermore, when the second reflecting member 370 is attached or detached, the linear members 181 are less likely to bend. Therefore, when the second reflecting member 370 is attached to the frame 360, the linear members 181 are less likely to be pinched between the frame 360, the lamp body 2, or the like, and the second reflecting member 370.

[0164] The embodiments of the present invention have been described above with reference to the drawings (FIGS. 1 to 42). However, the present invention is not limited to the above embodiments and can be embodied in various forms without departing from the spirit of the present invention. Furthermore, the components disclosed in the above embodiments can be modified as appropriate. For example, some of the components shown in one embodiment may be added to the components of another embodiment, or some of the components shown in one embodiment may be deleted from the embodiment.

[0165] The drawings mainly show each component in a schematic manner to facilitate understanding of the invention, and the thickness, length, number, spacing, etc. of each component shown in the drawings may differ from the actual ones due to the convenience of creating the drawings. Furthermore, the configuration of each component shown in the above embodiment is merely an example and is not particularly limited, and it goes without saying that various modifications are possible within a range that does not substantially deviate from the effects of the present invention.

[0166] [Appendix 1] The lighting fixture disclosed herein includes an operating lever, a plug unit, and a rotation stopper unit. The operating lever is rotatable in a first rotation direction and a second rotation direction opposite to the first rotation direction. The plug unit is detachable from a duct rail. The plug unit switches from a first position to a second position when the operating lever rotates from a first rotation position to a second rotation position, and switches from the second position to the first position when the operating lever rotates from the second rotation position to the first rotation position. The rotation stopper unit is rotatable between a first state that prevents the operating lever from rotating in the first rotation direction from the first rotation position to the second rotation position, and a second state that allows the operating lever to rotate in the first rotation direction from the first rotation position to the second rotation position.

[0167] In the lighting fixture disclosed herein, the rotation stopper may have a protrusion that prevents the operating lever from rotating in the first rotation direction from the first rotation position to the second rotation position. The protrusion may be located at a position that overlaps with a rotation trajectory of the operating lever when the rotation stopper is in the first state, and may be located at a position that does not overlap with the rotation trajectory of the operating lever when the rotation stopper is in the second state.

[0168] In the lighting device disclosed herein, the protrusion may have an inclined surface, and the operating lever may slide on the inclined surface when rotating in the second rotation direction from the second rotation position to the first rotation position.

[0169] In the lighting fixture disclosed herein, the protrusion may have an abutment surface that abuts against the operating lever when the operating lever rotates in the first rotation direction from the first rotation position to the second rotation position. The abutment surface may be disposed on the first rotation position side with respect to the inclined surface and inclined toward the first rotation position.

[0170] The lighting device disclosed herein may further include a base member that supports the rotation stopper so as to be able to transition between the first state and the second state. When the rotation stopper is in the second state, the base member may generate an elastic force that returns the rotation stopper from the second state to the first state.

[0171] In the lighting fixture disclosed in the present application, the rotation stopper and the base member may be formed as a single member.

[0172] The lighting fixture disclosed herein may further include a lighting fixture body, a power generating unit, and a housing. The lighting fixture body has a light source that generates light. The power generating unit generates power to be supplied to the light source. The housing accommodates the power generating unit. The operating lever may have a first operating unit operated by an operator. The rotation stopper may have a second operating unit operated by the operator. The housing may have multiple surfaces parallel to the longitudinal direction of the duct rail. The first operating unit and the second operating unit may be located on one of the multiple surfaces of the housing.

[0173] [Appendix 2] A first aspect of the present disclosure includes a housing attached to a duct rail, a lighting fixture body supported by the housing and having a light source that generates light, an operation lever that is rotatable in a first rotation direction and a second rotation direction that is opposite to the first rotation direction, a plug portion that protrudes from an upper surface of the housing and is detachable from the duct rail, and whose position changes from a first position to a second position when the operation lever rotates from a first rotation position to a second rotation position, and whose position changes from the second position to the first position when the operation lever rotates from the second rotation position to the first rotation position, and a plug portion that can be moved between a first state that prevents rotation of the operation lever in the first rotation direction from the first rotation position to the second rotation position and a second state that allows rotation of the operation lever in the first rotation direction from the first rotation position to the second rotation position. the upper surface of the housing is the surface facing the attached duct rail, the lower surface of the housing is the surface to which the lighting fixture body is connected, the rotation axis of the operating lever and the rotation axis of the plug part are arranged in the vertical direction, the rotation stopper is made of a single member and is arranged on a side of the housing parallel to the longitudinal direction of the duct rail, and has an operation knob with which an operator operates the rotation stopper, and a protrusion that prevents the operating lever from rotating in the first rotation direction from the first rotation position to the second rotation position, the protrusion being located at a position where the rotation stopper overlaps with the rotation trajectory of the operating lever when in the first state, and the rotation stopper is located at a position lower than in the first state where it does not overlap with the rotation trajectory of the operating lever when in the second state.

[0174] Aspect 2 of the present disclosure is a lighting device in aspect 1, wherein the protrusion has an inclined surface, and the operating lever slides on the inclined surface when rotating in the second rotation direction from the second rotation position to the first rotation position.

[0175] Aspect 3 of the present disclosure is a lighting device according to aspect 2, wherein the protrusion has an abutment surface that abuts when the operating lever rotates in the first rotation direction from the first rotation position to the second rotation position, and the abutment surface is positioned on the first rotation position side of the inclined surface and is inclined toward the first rotation position.

[0176] A fourth aspect of the present disclosure is a lighting device according to any one of the first to third aspects, further comprising a base member that supports the rotation stopper so that it can transition freely between the first state and the second state, and the base member generates an elastic force that returns the rotation stopper from the second state to the first state when the rotation stopper is in the second state.

[0177] A fifth aspect of the present disclosure is the lighting fixture according to the fourth aspect, wherein the rotation stopper and the base member are formed from a single member.

[0178] A sixth aspect of the present disclosure is a lighting fixture according to any one of the first to fifth aspects, wherein the operating lever has a first operating part operated by an operator, and the first operating part is located on the side of the housing on which the operating knob is located. [Industrial Applicability]

[0179] The present invention is useful in the field of lighting fixtures. [Explanation of symbols]

[0180] 2:Lighting body 3: Housing 3b: Side (one of several faces) 5: Power supply device (power generation section) 6: Plug part 7: Control lever 8: Rotation stopper 9: Base material 21:Light source 71: Operation unit (1st operation unit) 82: Rotation restriction protrusion (protrusion) 82a: Inclined surface 83: Operation section (second operation section) 100: Duct rail 200A: Lighting fixtures P1: First rotation position P2: Second rotation position RD1: 1st rotation direction RD2: Second rotation direction

Claims

1. A lighting fixture that can be attached to a duct rail, a lighting fixture body having a light source that generates light; a housing extending along the duct rail, the housing having an upper surface facing the duct rail, a lower surface to which the lighting fixture main body is connected, and a pair of side surfaces parallel to the longitudinal direction of the duct rail; an operating lever that is rotatable in a first rotation direction and a second rotation direction that is opposite to the first rotation direction; a plug portion that protrudes from the upper surface of the housing, is attachable to and detachable from the duct rail, and whose position is switched from a first position to a second position when the operation lever rotates from a first rotation position to a second rotation position, and whose position is switched from the second position to the first position when the operation lever rotates from the second rotation position to the first rotation position; a rotation stopper portion that can freely transition between a first state that prevents rotation of the operating lever in the first rotation direction from the first rotation position to the second rotation position and a second state that allows rotation of the operating lever in the first rotation direction from the first rotation position to the second rotation position, the operating lever has a first operating portion that is operated by an operator, the rotation stopper has a second operating part operated by the operator, The lighting device, wherein the first operating unit and the second operating unit are arranged on one of the pair of side surfaces.

2. The lighting fixture according to claim 1 , wherein the width of the housing is substantially the same as the width of the duct rail.

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