Lighting fixture

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 Art

[0002] Patent Document 1 discloses a power box device attached to a wiring duct. The power box device of Patent Document 1 includes an operation lever for rotating a plug and a lever cover. The lever cover is movable up and down between a locked position and an unlocked position. The lever cover covers the operation lever at the locked position. According to the power box device of Patent Document 1, by arranging the lever cover at the locked position, it is possible to reduce the accidental operation of the operation lever.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, in the power box device of Patent Document 1, in order to reduce the accidental operation of the operation lever, it is necessary to separately provide a component that covers the operation lever. As a result, for example, the miniaturization of the device may be inhibited.

[0005] The present invention has been made in view of the above problems, and an object thereof is to provide a lighting fixture that can reduce the accidental operation of an operation lever without providing a component that covers the operation lever.

Means for Solving the Problems

[0006] The lighting fixture disclosed in the present application includes an operation lever, a plug portion, and a rotation stopper. The operation lever is rotatable in a first rotation direction and a second rotation direction opposite to the first rotation direction. The plug portion is detachable from a duct rail. When the operation lever rotates from a first rotation position to a second rotation position, the posture of the plug portion switches from a first posture to a second posture, and when the operation lever rotates from the second rotation position to the first rotation position, the posture of the plug portion switches from the second posture to the first posture. The rotation stopper is capable of transitioning between a first state that blocks 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.

[0007] In the lighting fixture disclosed in the present application, the rotation stopper may have a protrusion that blocks rotation of the operation lever in the first rotation direction from the first rotation position to the second rotation position. The protrusion may be located at a position overlapping the rotation locus of the operation lever when the rotation stopper is in the first state, and may be located at a position not overlapping the rotation locus of the operation lever when the rotation stopper is in the second state.

[0008] In the lighting fixture disclosed in the present application, the protrusion may have an inclined surface. The operation lever may slide on the inclined surface when rotating in the second rotation direction from the second rotation position to the first rotation position.

[0009] In the lighting fixture disclosed in the present application, the protrusion may have a contact surface that contacts the operation lever when the operation lever rotates in the first rotation direction from the first rotation position to the second rotation position. The contact surface may be disposed on the first rotation position side with respect to the inclined surface and may be inclined toward the first rotation position side.

[0010] The lighting fixture disclosed in the present application may further include a base member that supports the rotation stopper portion so as to be freely movable between the first state and the second state. The base member may generate an elastic force that causes the rotation stopper portion to return from the second state to the first state when the rotation stopper portion is in the second state.

[0011] In the lighting fixture disclosed in the present application, the rotation stopper portion and the base member may be formed of a single member.

[0012] The lighting fixture disclosed in the present application may further include a lamp body, a power generation unit, and a housing. The lamp body has a light source that generates light. The power generation unit generates power to be supplied to the light source. The housing houses the power generation unit. The operation lever may have a first operation portion that is operated by an operator. The rotation stopper portion may have a second operation portion that is operated by the operator. The housing may have a plurality of surfaces parallel to the longitudinal direction of the duct rail. The first operation portion and the second operation portion may be disposed on one of the plurality of surfaces of the housing.

Advantages of the Invention

[0013] According to the lighting fixture disclosed in the present application, it is possible to reduce the erroneous operation of the operation lever without providing a component that covers the operation lever.

Brief Description of the Drawings

[0014]

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[0015] Hereinafter, embodiments of the lighting fixture and the accessory according to 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 aspects without departing from the gist thereof. Note that descriptions of overlapping parts may be omitted as appropriate. Also, in the drawings, the same or corresponding parts are denoted by the same reference numerals and the description will not be repeated.

[0016] [Embodiment 1] Hereinafter, Embodiment 1 will be described with reference to FIGS. 1 to 11. First, the 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 the duct rail 100.

[0017] The duct rail 100 is fixed to, for example, the ceiling C. In the present embodiment, the case where the lighting fixture 200A is attached to the duct rail 100 fixed to the ceiling C will be taken as an example to describe the lighting fixture 200A. Note that 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. Further, the duct rail 100 may be fixed to a wall or a floor. Therefore, the lighting fixture 200A may be disposed on a wall or a floor.

[0018] Hereinafter, for convenience of explanation, the side on which the lighting fixture 200A is disposed with respect to the duct rail 100 is defined as the "lower side", and the side on which the duct rail 100 is disposed with respect to the lighting fixture 200A is defined as the "upper side" to define the vertical direction. Here, "up" and "down" correspond to "up" and "down" when the lighting fixture 200A is attached to the duct rail 100 fixed to the ceiling C.

[0019] As shown in FIG. 1, the lighting fixture 200A includes a lamp body 2, a housing 3, and a connecting arm portion 4.

[0020] 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.

[0021] 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 the present embodiment, the housing 3 is attached to the duct rail 100 in a state where there is no gap or substantially no gap between the housing 3 and the duct rail 100.

[0022] The connecting arm portion 4 connects the lamp body 2 and the housing 3. The lighting fixture 200A of the present embodiment is a spotlight, and the lamp body 2 is tiltably supported with respect to the housing 3 by the connecting arm portion 4. Therefore, the angle between the lamp body 2 and the housing 3 can be changed. For example, the angle between the lamp body 2 and the housing 3 can be changed within a range of 0° or more and 92° or less. Further, the lamp body 2 is rotatable about the connecting arm portion 4 as a rotation axis.

[0023] Subsequently, 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 extends linearly.

[0024] The rail base 101 has a lower wall 101a. The lower wall 101a constitutes 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 (the first direction D1). The insertion groove 101b is a slit that communicates with the inside of the rail base 101.

[0025] The rail base 101 has two conductor portions 102 and two plug support portions 103 inside. The two conductor portions 102 and the two plug support portions 103 extend in the direction in which the rail base 101 extends (the first direction D1).

[0026] The two conductor portions 102 face each other with the insertion groove 101b interposed therebetween. An external power supply voltage is applied to each conductor portion 102. The two plug support portions 103 are provided below the two conductor portions 102. The two plug support portions 103 face each other with the insertion groove 101b interposed therebetween.

[0027] Subsequently, the lighting fixture 200A of the present embodiment will be further described with reference to FIGS. 3 to 10. First, the lighting fixture 200A of the present embodiment will be described with reference to FIGS. 3 and 4. FIG. 3 is a side view showing the lighting fixture 200A of the present embodiment. FIG. 4 is a perspective view showing the lighting fixture 200A of the present embodiment.

[0028] As shown in FIG. 3, the luminaire body 2 has a light source 21. The light source 21 generates light. The light source 21 is disposed inside the luminaire body 2. The light generated from the light source 21 is emitted from the light-emitting surface 2a to the outside of the luminaire body 2. The light source 21 has, as a light-emitting element, for example, an LED (Light Emitting Diode) element. The light source 21 is, for example, an SMD (surface mount device) or a COB (chip on board). In the present embodiment, the light source 21 is a planar light source.

[0029] As shown in FIGS. 3 and 4, the housing 3 has an opposing surface 3a. The opposing surface 3a is a surface that opposes the duct rail 100 in a state where the lighting fixture 200A is attached to the duct rail 100 described with reference to FIGS. 1 and 2. Here, the opposing surface 3a is the upper surface of the housing 3.

[0030] In the present embodiment, the width W2 (FIG. 4) of the housing 3 is the same as or substantially 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 an integrated design. Further, since the entire or substantially the entire opposing surface 3a of the housing 3 is covered by the duct rail 100, it is difficult for dust or the like to adhere to the opposing surface 3a of the housing 3.

[0031] As shown in FIG. 3, the lighting fixture 200A further includes a power supply device 5. Further, as shown in FIGS. 3 and 4, the lighting fixture 200A further includes a plug portion 6, an operation lever 7, and a rotation stopper 8.

[0032] The plug portion 6 projects 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.

[0033] The power supply device 5 is housed inside the housing 3. The power supply device 5 generates the 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 for driving the LED element. The power supply device 5 is an example of a power generation unit.

[0034] The operation lever 7 is operated by an operator. The operator can operate the operation lever 7 to rotate the plug portion 6. The rotation stopper 8 prevents the rotation of the operation lever 7. Specifically, the rotation stopper 8 can freely transition between a first state that prevents the rotation of the operation lever 7 and a second state that allows the rotation of the operation 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.

[0035] Subsequently, the plug portion 6 will be further described with reference to FIGS. 5 to 8. FIG. 5 is a perspective view showing a part of the lighting fixture 200A of the present embodiment. FIG. 6 is another perspective view showing a part of the lighting fixture 200A of the present embodiment. FIG. 7 is a plan view showing a part of the lighting fixture 200A of the present embodiment. FIG. 8 is another plan view showing a part of the lighting fixture 200A of the present embodiment. In FIGS. 5 to 8, for convenience of explanation, the connecting arm portion 4 and the lamp body 2 are omitted.

[0036] As shown in FIGS. 5 and 6, the plug portion 6 is rotatable about a first axis X1 as a central axis. In the present embodiment, the first axis X1 extends in the vertical direction. As shown in FIGS. 7 and 8, when the plug portion 6 rotates, its posture switches between a first posture and a second posture. FIGS. 5, 6, and 7 show the plug portion 6 in the first posture. FIG. 8 shows the plug portion 6 in the second posture.

[0037] As shown in FIGS. 5 and 6, the plug portion 6 includes a support column portion 61, a plug terminal 62, and a rail engagement portion 63.

[0038] The support column portion 61 extends in the vertical direction. Specifically, the support column portion 61 extends along the first axis X1. The support column portion 61 functions as the rotation axis of the plug portion 6. The first axis X1 is the central axis of the support column portion 61, and the support column portion 61 is rotatable about the first axis X1 as the central axis.

[0039] The plug terminal 62 protrudes from the circumferential surface of the support column portion 61. The plug terminal 62 rotates about the first axis X1 as the central axis in response to the rotation of the support column portion 61. The rail engaging portion 63 is provided on the circumferential surface of the support column portion 61. The rail engaging portion 63 is disposed below the plug terminal 62. The rail engaging portion 63 rotates about the first axis X1 as the central axis in response to the rotation of the support column portion 61.

[0040] The first posture (FIG. 7) is a posture in which 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 engaging portion 63 of the plug portion 6. The second posture (FIG. 8) is a posture in which the insertion groove 101b (FIG. 2) of the duct rail 100 is parallel to the plug terminal 62 and the rail engaging portion 63 of the plug portion 6. In other words, the second posture is a posture in which 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 engaging portion 63 of the plug portion 6. By setting the posture of the plug portion 6 to the second posture, it becomes possible to insert and remove the plug terminal 62 and the rail engaging portion 63 with respect to the insertion groove 101b of the duct rail 100.

[0041] 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).

[0042] When the rail engaging portion 63 is engaged with the plug support 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 support portion 103 and the lower wall 101a of the rail base 101.

[0043] Next, the operation lever 7 will be further described with reference to FIGS. 5 to 8. As shown in FIGS. 5 and 6, the operation lever 7 is rotatable in a first rotation direction RD1 and a second rotation direction RD2. The second rotation direction RD2 is a rotation direction opposite to the first rotation direction RD1. In the present embodiment, the first rotation direction RD1 and the second rotation direction RD2 are rotation directions centered on the first axis X1. More specifically, the operation lever 7 is rotatable between a first rotation position P1 shown in FIG. 7 and a second rotation position P2 shown in FIG. 8.

[0044] The operator can rotate the operation lever 7 from the first rotation position P1 to the second rotation position P2 in the first rotation direction RD1. Also, the operator can rotate the operation lever 7 from the second rotation position P2 to the first rotation position P1 in the second rotation direction RD2. When the operation lever 7 rotates from the first rotation position P1 to the second rotation position P2, the plug portion 6 switches its posture from the first posture to the second posture. Also, when the operation lever 7 rotates from the second rotation position P2 to the first rotation position P1, the plug portion 6 switches its posture from the second posture to the first posture.

[0045] Next, the configuration of the operation lever 7 will be described with reference to FIGS. 5 and 6. As shown in FIGS. 5 and 6, the operation lever 7 has an operation portion 71 and a connecting portion 72. Hereinafter, the operation portion 71 may be described as the "first operation portion 71".

[0046] The first operation portion 71 is a portion operated by the operator. By operating the first operation portion 71, the operator rotates the plug portion 6. That is, by operating the first operation portion 71, the operator switches the posture of the plug portion 6 between the first posture and the second posture.

[0047] The first operation portion 71 has an operation knob 71a. Hereinafter, the operation knob 71a may be described as the "first operation knob 71a". The first operation knob 71a is protruded. By having the first operation portion 71 with the first operation knob 71a, it becomes easy for the operator to operate the first operation portion 71.

[0048] The connecting portion 72 connects the first operation portion 71 and the plug portion 6. More specifically, the connecting portion 72 is connected to the support column portion 61 and protrudes from the circumferential surface of the support column portion 61. Therefore, the connecting portion 72 rotates about the first axis X1 as the central axis. That is, the operation lever 7 rotates about the first axis X1 as the central axis. Note that 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 slightly protrudes from the opposing surface 3a of the housing 3.

[0049] Subsequently, with reference to FIGS. 5 to 9, the rotation stopper 8 will be further described. FIG. 9 is a side view showing a part of the lighting fixture 200A of the present embodiment. In FIG. 9, for convenience of explanation, the connecting arm portion 4 and the lamp body 2 are omitted.

[0050] As already described, the rotation stopper 8 can freely transition between the first state and the second state. More specifically, the first state is a state that prevents the rotation of the operation lever 7 in the first rotation direction RD1 from the first rotation position P1 to the second rotation position P2. That is, the first state is a state that prevents the rotation of the operation lever 7 in the first rotation direction RD1 when the plug portion 6 is in the first posture. The second state is a state that allows the rotation of the operation lever 7 in the first rotation direction RD1 from the first rotation position P1 to the second rotation position P2. That is, the second state is a state that allows the rotation of the operation lever 7 in the first rotation direction RD1 when the plug portion 6 is in the first posture.

[0051] Therefore, when the rotation stopper 8 is in the first state, the switching of the plug portion 6 from the first posture to the second posture is blocked. Also, when the rotation stopper 8 is in the second state, the switching of the plug portion 6 from the first posture to the second posture and the switching of the plug portion 6 from the second posture to the first posture are allowed.

[0052] As shown in FIGS. 5 to 9, the rotation stopper 8 has an opposing portion 81, a rotation restricting protrusion 82, and an operation portion 83. Hereinafter, the operation portion 83 may be described as the "second operation portion 83".

[0053] The opposing portion 81 faces the region through which the connecting portion 72 of the operation lever 7 passes. Hereinafter, the region through which the connecting portion 72 of the operation lever 7 passes may be described as the "operation lever passing region". In the present embodiment, the opposing portion 81 is disposed below the operation lever passing region.

[0054] The rotation restricting protrusion 82 protrudes from the opposing portion 81 toward the operation lever passing region. In the present 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 the rotation locus of the connecting portion 72 of the operation lever 7 when the rotation stopper 8 is in the first state. As a result, the rotation of the operation lever 7 in the first rotation direction RD1 from the first rotation position P1 to the second rotation position P2 is blocked by the rotation restricting protrusion 82. The rotation restricting protrusion 82 is an example of a protrusion.

[0055] The second operation portion 83 is a portion operated by an operator. The second operation portion 83 is connected to the opposing portion 81. The operator can transition the rotation stopper 8 from the first state to the second state by operating the second operation portion 83.

[0056] Specifically, the second operation portion 83 is movable in the second direction D2 from the first state. The second direction D2 is a direction away from the operation lever passing region. In the present embodiment, the second direction D2 is the downward direction. When the operator moves the second operation portion 83 in the second direction D2, the opposing portion 81 moves away from the operation lever passing region. As a result, as shown in FIG. 9, the rotation restricting protrusion 82 moves away from the operation lever passing region to a position where it does not overlap the rotation locus of the connecting portion 72 of the operation lever 7. When the rotation restricting protrusion 82 moves to a position where it does not overlap the rotation locus of the connecting portion 72 of the operation lever 7, the rotation of the operation lever 7 is permitted.

[0057] 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 is in a protruding shape. Since the second operation unit 83 has the second operation knob 83a, it becomes easier for an operator to operate the second operation unit 83.

[0058] Subsequently, the lighting fixture 200A of the present embodiment will be further described with reference to FIG. 8. As shown in FIG. 8, the lighting fixture 200A further includes a base member 9.

[0059] The base member 9 supports the rotation stopper 8 so as to be rotatable 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 the present embodiment, the rotation stopper 8 and the base member 9 are made of a single member. In other words, the rotation stopper 8 is a part of the base member 9.

[0060] The base member 9 generates an elastic force that causes the rotation stopper 8 to return from the second state to the first state when the rotation stopper 8 is in the second state. The base member 9 and the rotation stopper 8 are made of, for example, resin.

[0061] According to the present embodiment, after the operator sets the rotation stopper 8 to the second state and then releases a finger from the operation unit 83 of the rotation stopper 8, the operator can change the state of the rotation stopper 8 from the second state to the first state. Therefore, an operation for changing the state of the rotation stopper 8 from the second state to the first state becomes unnecessary. That is, an operation for locking the rotation of the operation lever 7 becomes unnecessary.

[0062] Furthermore, in the present embodiment, the rotation stopper 8 and the base member 9 are made of a single member. Therefore, according to the present embodiment, the rotation of the operation lever 7 can be locked with a smaller number of parts. Therefore, the assembly man-hours and material costs of the lighting fixture 200A can be reduced.

[0063] Next, with reference to FIGS. 6, 7, 8, and 10, the configuration of the rotation stopper 8 will be further described. FIG. 10 is a side view showing a part of the lighting fixture 200A of the present embodiment. Note that FIG. 10 shows the operation lever 7 positioned at the first rotation position P1. Also, FIG. 10 shows the rotation stopper 8 in the first state. As shown in FIG. 10, the rotation restricting projection 82 has a contact surface 82a and an inclined surface 82b.

[0064] The contact surface 82a is a surface with which the connecting portion 72 of the operation 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) comes into contact when the rotation stopper 8 is in the first state. The contact surface 82a is disposed on the first rotation position P1 (FIG. 7) side with respect to the inclined surface 82b. The contact surface 82a protrudes upward from the opposing portion 81 when the rotation stopper 8 is in the first state. When the connecting portion 72 of the operation lever 7 comes into contact with the contact surface 82a of the rotation restricting projection 82 when the operation lever 7 rotates in the first rotation direction RD1, the rotation of the operation lever 7 in the first rotation direction RD1 from the first rotation position P1 to the second rotation position P2 is blocked.

[0065] In the example shown in FIG. 10, the posture of the contact surface 82a is perpendicular to the opposing portion 81. Therefore, the contact surface 82a is parallel in the vertical direction when the rotation stopper 8 is in the first state. Thus, the contact surface 82a assumes a posture perpendicular to the rotation locus of the connecting portion 72 of the operation lever 7 when the rotation stopper 8 is in the first state. In other words, the contact surface 82a assumes a posture perpendicular to the first rotation direction RD1 and the second rotation direction RD2 when the rotation stopper 8 is in the first state.

[0066] The inclined surface 82b is connected to the tip of the contact surface 82a. Here, the tip of the contact surface 82a indicates 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 be farther from the opposing portion 81 as it approaches the operation lever 7 positioned at the first rotation position P1.

[0067] When the operation lever 7 rotates in the second rotation direction RD2 from the second rotation position P2 to the first rotation position P1, it slides on the inclined surface 82b. As a result, when switching the posture of the plug portion 6 from the second posture to the first posture, the rotation of the operation lever 7 is not locked. Therefore, the operator does not need to perform an operation to release the lock when switching the posture of the plug portion 6 from the second posture to the first posture. Specifically, the operator can rotate the operation lever 7 without operating the operation portion 83 of the rotation stopper 8. When the operation lever 7 slides on the inclined surface 82b, the operation portion 83 of the rotation stopper 8 may move in the second direction D2. In other words, when the operation lever 7 slides on the inclined surface 82b, the rotation stopper 8 may be pushed down.

[0068] Subsequently, the lighting fixture 200A of the present embodiment will be further described with reference to FIGS. 5 and 6. As shown in FIGS. 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 operation portion 71 of the operation lever 7 and the operation portion 83 of the rotation stopper 8 are arranged on the side surface 3b of the housing 3.

[0069] According to the present embodiment, the operation portion 71 of the operation lever 7 and the operation portion 83 of the rotation stopper 8 are not arranged on a surface orthogonal to the first direction D1. Therefore, when a plurality of lighting fixtures 200A are attached to the duct rail 100, the plurality of lighting fixtures 200A can be arranged with no gap or substantially no gap between the housings 3 of the plurality of lighting fixtures 200A.

[0070] When the operation lever 7 is located at the first rotation position P1, the operation portion 71 of the operation lever 7 is arranged in a recess or notch provided in the side surface 3b of the housing 3. When the operation portion 71 of the operation lever 7 is arranged in a recess or notch provided in the side surface 3b of the housing 3, the operation portion 71 of the operation lever 7 and the side surface 3b of the housing 3 are flush. Alternatively, the operation portion 71 of the operation lever 7 slightly protrudes from the side surface 3b of the housing 3.

[0071] Also, when the operation lever 7 is positioned at the first rotation position P1, the connecting portion 72 of the operation 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 operation lever 7 is disposed in a recess or notch provided in the side surface 3b of the housing 3, the connecting portion 72 of the operation lever 7 and the side surface 3b of the housing 3 are flush. Alternatively, the connecting portion 72 of the operation lever 7 may slightly protrude from the side surface 3b of the housing 3.

[0072] Similarly, the operation 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 operation portion 83 of the rotation stopper 8 is disposed in a recess or notch provided in the side surface 3b of the housing 3 such that the operation portion 83 of the rotation stopper 8 and the side surface 3b of the housing 3 are flush. Alternatively, the operation portion 83 of the rotation stopper 8 may slightly protrude from the side surface 3b of the housing 3.

[0073] As described above, the first embodiment has been described with reference to FIGS. 1 to 10. According to the first embodiment, it is possible to reduce the malfunction of the operation lever 7 without providing a component that covers the operation lever 7. Further, when the plug portion 6 is in the first posture, the rotation stopper 8 can prevent the operation lever 7 from rotating in the first rotation direction RD1 from the first rotation position P1 to the second rotation position P2, so that the plug portion 6 can be prevented from being unexpectedly detached from the duct rail 100.

[0074] Subsequently, a modification of the rotation restricting projection 82 will be described with reference to FIG. 11. FIG. 11 is a diagram showing a modification of the rotation restricting projection 82. The rotation restricting projection 82 shown in FIG. 11 has a posture of the contact surface 82a different from that of the rotation restricting projection 82 shown in FIG. 10.

[0075] 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 rotational 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 operation lever 7 located at the first rotational position P1. In other words, the contact surface 82a shown in FIG. 11 is inclined so as to approach the operation lever 7 located at the first rotational position P1 as it moves away from the opposing portion 81. Therefore, the angle θ (the angle on the first rotational position P1 side) between the contact surface 82a and the opposing portion 81 is an acute angle.

[0076] According to the modification shown in FIG. 11, it is possible to further increase the possibility that the rotation of the operation lever 7 from the first rotational position P1 to the second rotational position P2 in the first rotational direction RD1 is blocked by the rotation restricting projection 82.

[0077] For example, due to the play of the rotation stopper 8 or dimensional errors of the rotation stopper 8 or the like, the rotation stopper 8 may tilt toward the second rotational position P2 (FIG. 8) side. When the posture of the contact surface 82a is perpendicular to the opposing portion 81, if the rotation stopper 8 tilts toward the second rotational position P2 side, the contact surface 82a will be inclined so as to move away from the operation lever 7 located at the first rotational position P1 as it moves away from the opposing portion 81. In this case, when the operation lever 7 rotates from the first rotational position P1 to the second rotational position P2 in the first rotational direction RD1, it may slide on the contact surface 82a, and there is a possibility that the rotation of the operation lever 7 cannot be blocked.

[0078] On the other hand, according to the modification shown in FIG. 11, even when the rotation stopper 8 inclines toward the second rotation position P2, the contact surface 82a is less likely to assume a posture of inclining so as to move away from the operation lever 7 located at the first rotation position P1 as it moves away from the opposing portion 81. In other words, even when the rotation stopper 8 inclines toward the second rotation position P2, the contact surface 82a inclines so as to approach the operation lever 7 located at the first rotation position P1 as it moves away from the opposing portion 81. Alternatively, the contact surface 82a assumes a posture perpendicular to the rotation locus of the connecting portion 72 of the operation lever 7 even when the rotation stopper 8 inclines toward the second rotation position P2. Therefore, the possibility of preventing the rotation of the operation lever 7 from the first rotation position P1 to the second rotation position P2 in the first rotation direction RD1 can be further increased.

[0079] [Embodiment 2] Next, Embodiment 2 will be described with reference to FIGS. 12 to 14. However, only matters different from Embodiment 1 will be described, and descriptions of matters the same as those in Embodiment 1 will be omitted. Embodiment 2 is different from Embodiment 1 in that the lighting fixture 200B further includes a mounting member 11.

[0080] FIG. 12 is a perspective view showing the lighting fixture 200B of the present embodiment. As shown in FIG. 12, the lighting fixture 200B has substantially the same configuration as the lighting fixture 200A described in Embodiment 1. Different from the lighting fixture 200A, the lighting fixture 200B further includes a mounting member 11.

[0081] In the present embodiment, the mounting member 11 is fixed to the opposing surface 3a of the housing 3. More specifically, the mounting member 11 is disposed at a position far from the plug portion 6. For example, the plug portion 6 is disposed at one end in the longitudinal direction of the housing 3, and the mounting member 11 is disposed at the other end in the longitudinal direction of the housing 3. One end of a linear member 12 is fixed to the mounting 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.

[0082] FIG. 13 is a perspective view showing a part of the lighting fixture 200B of the present embodiment. Specifically, FIG. 13 shows the lighting fixture 200B attached to the 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.

[0083] FIG. 14 is a perspective view showing the connecting member 13. The connecting member 13 has a support column portion 131 and a rail engaging portion 132. The rail engaging portion 132 is provided on the circumferential surface of the support column portion 131. The rail engaging portion 132 engages with the plug support portion 103 (FIG. 2) of the duct rail 100.

[0084] As described above, the second embodiment has been described with reference to FIGS. 12 to 14. Regarding the lighting fixture 200B of the present embodiment, Japanese Utility Model Laid-Open 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, in the structure of Patent Document 2, when the spotlight (lamp body) is rotated or tilted, there is a possibility that the spotlight (lamp body) and the wire may interfere with each other. If the spotlight (lamp body) and the wire interfere with each other, it may not be possible to smoothly rotate and tilt the spotlight (lamp body). In addition, there is a possibility that the wire may damage the spotlight (lamp body). On the other hand, according to the present embodiment, since one end of the linear member 12 is fixed to the housing 3, it is difficult for the lamp body 2 and the linear member 12 to interfere with each other when the lamp body 2 is rotated or tilted. Therefore, the lamp body 2 can be smoothly rotated and tilted. In addition, damage to the lamp body 2 caused by the linear member 12 is also unlikely to occur.

[0085] Furthermore, according to the present 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 applied to the linear member 12 can be reduced.

[0086] Note that the lighting fixture 200B may further include a linear member 12 and a connecting member 13.

[0087] [Embodiment 3] Next, Embodiment 3 will be described with reference to FIGS. 15 and 16. However, matters different from Embodiments 1 and 2 will be described, and descriptions of matters the same as those in Embodiments 1 and 2 will be omitted. In Embodiment 3, the positional relationship between the plug portion 6 and the connecting arm portion 4 is different from that in Embodiments 1 and 2.

[0088] FIG. 15 is a front view showing the lighting fixture 200C of the present embodiment. FIG. 16 is a cross-sectional view of the lighting fixture 200C taken along line A-A in FIG. 15. As shown in FIGS. 15 and 16, the lighting fixture 200C has substantially the same configuration as the lighting fixture 200A described in Embodiment 1.

[0089] As shown in FIG. 16, the plug portion 6 and the connecting arm portion 4 are arranged on one side in the longitudinal direction of the housing 3. Further, the plug portion 6 is arranged between the power supply device 5 and the connecting arm portion 4. Therefore, when the lighting fixture 200C is viewed from the duct rail 100 (FIG. 2) side, the plug portion 6 and the connecting arm portion 4 are arranged at positions where they do not overlap each other.

[0090] Note that the lamp body 2 is rotatable about the second axis X2 as the central axis. The second axis X2 is the central axis of the connecting arm portion 4. In the present embodiment, the second axis X2 extends in the vertical direction. The second axis X2 is located at a position different from the first axis X1 when the lighting fixture 200C is viewed from the duct rail 100 (FIG. 2) side.

[0091] The above described Embodiment 3 with reference to FIGS. 15 and 16. Regarding the lighting fixture 200C of the present embodiment, Japanese Patent Application Laid-Open No. 2008-4455 (hereinafter referred to as "Patent Document 3") discloses a spotlight in which an arm and a plug portion are arranged on one side in the longitudinal direction of the base, and the arm and the plug portion overlap when viewed from above. However, in the spotlight of Patent Document 3, the weight balance of the spotlight centered on the plug portion is poor. As a result, the other side in the longitudinal direction of the base may hang down from the duct rail. Here, the other side in the longitudinal direction of the base is the side opposite to the side where the arm and the plug portion are arranged. On the other hand, according to the present embodiment, compared with the configuration in which the plug portion 6 and the connecting arm portion 4 overlap when viewed from the duct rail 100 side, the weight balance of the lighting fixture 200C centered on the plug portion 6 is good, so the other side in the longitudinal direction of the housing 3 can be reduced from hanging down from the duct rail 100. Here, the other side in the longitudinal direction of the housing 3 is the side opposite to the side where the connecting arm portion 4 and the plug portion 6 are arranged.

[0092] Also, when the plug portion 6 and the connecting arm portion 4 overlap when viewed from the duct rail 100 side, it is necessary to arrange the connecting arm portion 4 directly below the plug portion 6, and it is difficult to suppress the height dimension H (vertical width) of the housing 3. On the other hand, according to the present embodiment, since the plug portion 6 and the connecting arm portion 4 do not overlap when viewed from the duct rail 100 side, it is easy to suppress the height dimension H (vertical width) of the housing 3.

[0093] [Embodiment 4] Next, Embodiment 4 will be described with reference to FIGS. 17 to 25. However, matters different from Embodiments 1 to 3 will be described, and descriptions of the same matters as in Embodiments 1 to 3 will be omitted. Embodiment 4 is different from Embodiments 1 to 3 in that the lighting fixture 300A includes an accessory 160 (see FIG. 20).

[0094] First, the lighting fixture 300A of the present embodiment will be described with reference to FIG. 17. FIG. 17 is a side view showing the lighting fixture 300A of the present embodiment. As shown in FIG. 17, the lighting fixture 300A of the present embodiment is a downlight and is attached to the ceiling C. More specifically, the lighting fixture 300A is embedded in the ceiling C.

[0095] As shown in FIG. 17, the lighting fixture 300A includes a light source unit 310, a fixing frame 320, and a mounting spring 330. Hereinafter, for the convenience of explanation, the side where the fixing frame 320 is disposed with respect to the light source unit 310 is defined as the "lower side", and the side where the light source unit 310 is disposed with respect to the fixing frame 320 is defined as the "upper side", thereby defining the vertical direction. Here, "up" and "down" correspond to "up" and "down" when the lighting fixture 300A is attached to the ceiling C.

[0096] The light source unit 310 generates light. The light generated in the light source unit 310 is emitted from the lower surface of the fixing frame 320. The light source unit 310 is rotatably attached to the fixing frame 320. The light source unit 310 is rotatable about the third axis X3 as the central axis. More specifically, the light source unit 310 has a lamp body 311 and a light leakage restricting portion 312, and the light leakage restricting portion 312 is rotatably attached to the fixing frame 320. In the present embodiment, the third axis X3 extends in the vertical direction.

[0097] The mounting spring 330 is fixed to the fixing frame 320. The mounting spring 330 attaches the fixing frame 320 to the mounting position. In the present embodiment, the mounting position is the ceiling C.

[0098] Subsequently, the lighting fixture 300A of the present embodiment will be described with reference to FIG. 18. FIG. 18 is a front view showing the lighting fixture 300A of the present embodiment. As shown in FIG. 18, the lamp body 311 is tiltable with respect to the light leakage restricting portion 312 about the fourth axis X4 as the central axis. More specifically, the lamp body 311 is tiltable backward with respect to the light leakage restricting portion 312.

[0099] The light leakage regulation unit 312 regulates light from leaking between the luminaire body 311 and the fixed frame 320 when the luminaire body 311 tilts backward with respect to the light leakage regulation unit 312. Specifically, the light leakage regulation unit 312 prevents a gap from occurring between the luminaire body 311 and the fixed frame 320 when the luminaire body 311 tilts backward with respect to the light leakage regulation unit 312. Alternatively, the light leakage regulation unit 312 reduces the gap that occurs between the luminaire body 311 and the fixed frame 320 when the luminaire body 311 tilts backward with respect to the light leakage regulation unit 312.

[0100] Next, the lighting fixture 300A of the present embodiment will be further described with reference to FIGS. 19 and 20. FIG. 19 is a bottom view showing the lighting fixture 300A of the present embodiment. FIG. 20 is a cross-sectional view of the lighting fixture 300A taken along line B-B in FIG. 19.

[0101] As shown in FIG. 19, the fixed frame 320 has an opening 320a on its lower surface. Hereinafter, the opening 320a of the fixed frame 320 may be referred to as the "lower surface opening 320a". The light generated in the lighting fixture 300A is emitted to the outside of the lighting fixture 300A through the lower surface opening 320a of the fixed frame 320.

[0102] As shown in FIG. 20, the luminaire body 311 includes a luminaire housing 311a, a light source 151, and a reflecting member 152. The light source 151 and the reflecting member 152 are disposed inside the luminaire housing 311a.

[0103] The light source 151 generates light. The light generated from the light source 151 is emitted from the luminaire housing 311a toward the fixed frame 320, then passes through the fixed frame 320, and is emitted to the outside of the lighting fixture 300A through the lower surface 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, SMD or COB. In the present embodiment, the light source 151 is a planar light source.

[0104] The reflecting member 152 is disposed below the light source 151. The reflecting member 152 is cylindrical with openings at its upper and lower ends. Specifically, the diameter of the reflecting member 152 gradually increases as it moves away from the light source 151. For example, the reflecting member 152 is substantially frustum-shaped. When viewed from the vertical direction, the opening at the upper end of the reflecting member 152 overlaps with the light source 151.

[0105] The light generated from the light source 151 is emitted from the opening at the upper end of the reflecting member 152 into the inside of the reflecting member 152. A part of the light emitted into the inside of the reflecting member 152 is reflected on the inner surface of the reflecting member 152.

[0106] 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 reflecting member 152. The accessory 160 is an optional component of the lighting fixture 300A and is detachable from the lamp body 311. In the present embodiment, the accessory 160 is the first accessory 160A. The first accessory 160A has a flare cut louvre 164A (see FIG. 21).

[0107] Subsequently, the accessory 160 (the first accessory 160A) will be described with reference to FIGS. 21 and 22. FIG. 21 is a perspective view showing the accessory 160. Specifically, FIG. 21 shows the accessory 160 viewed obliquely from above. FIG. 22 is another perspective view showing the accessory 160. Specifically, FIG. 22 shows the accessory 160 viewed obliquely from below.

[0108] As shown in FIG. 21, the accessory 160 includes a frame body 161 and a functional part 164. The frame body 161 supports the functional part 164. The functional part 164 controls the characteristics of the light emitted from the lighting fixture 300A. In the first accessory 160A, the functional part 164 is the flare cut louvre 164A.

[0109] As shown in FIG. 21, the accessory 160 further includes a magnet 163. In the present embodiment, the accessory 160 includes four magnets 163. The magnet 163 is provided on the frame 161. In the present embodiment, the magnet 163 is disposed on the upper surface of the frame 161. The magnet 163 is a component that holds the accessory 160 to the lamp housing 311a. In the present embodiment, the accessory 160 is held to the lamp housing 311a by the magnetic force of the magnet 163.

[0110] The frame 161 is annular and has a light passage region 162 through which the light L generated from the light source 151 described with reference to FIG. 20 passes. The light passage region 162 indicates the inner space of the frame 161. The magnet 163 is disposed at a position that does not overlap with the light passage region 162.

[0111] As shown in FIG. 22, the frame 161 has a main body portion 170 and a first protruding portion 171. The main body portion 170 is annular. The first protruding portion 171 is connected to the main body portion 170. Specifically, the first protruding portion 171 is provided on the side opposite to the side where the light source 151 (FIG. 20) is disposed with respect to the frame 161. In the present embodiment, the first protruding portion 171 is provided below the main body portion 170.

[0112] The first protruding portion 171 protrudes from the main body portion 170. Specifically, the first protruding portion 171 protrudes in the direction in which the light L passes through the light passage region 162. In the present embodiment, the first protruding portion 171 is annular, and the diameter of the outer peripheral surface of the first protruding portion 171 is smaller than the diameter of the outer peripheral surface of the main body portion 170.

[0113] According to the present embodiment, since the frame 161 has the first protruding portion 171, it becomes easier for an operator to remove the accessory 160. Specifically, when the operator removes the accessory 160 attached to the lamp housing 311a described with reference to FIG. 20, the operator can grasp the first protruding portion 171 with a finger. Therefore, the operation of removing the accessory 160 becomes easier.

[0114] As shown in FIG. 22, the frame body 161 further has a second protruding portion 172. In the present embodiment, the frame body 161 has four second protruding portions 172. The second protruding portion 172 protrudes in a direction intersecting the direction in which the light L passes through the light passing region 162. The second protruding portion 172 is provided on the lower side of the main body portion 170. That is, the second protruding portion 172 is provided on the side opposite to the side where the light source 151 (FIG. 20) is arranged with respect to the frame body 161. In the present embodiment, the second protruding portion 172 protrudes from the first protruding portion 171.

[0115] According to the present embodiment, since the frame body 161 has the second protruding portion 172, the operation of adjusting the rotational position of the accessory 160 by the operator becomes easy. Specifically, when the operator adjusts the rotational position of the accessory 160 attached to the lamp housing 311a described with reference to FIG. 20, the operator can place a finger on the second protruding portion 172 and rotate the accessory 160. Therefore, the operation of adjusting the rotational position of the accessory 160 becomes easy. Note that the rotational position of the accessory 160 is adjusted when the light distribution characteristics of the light emitted from the lighting fixture 300A change depending on the rotational position of the accessory 160. For example, when the functional portion 164 is the spread lens 164B (FIG. 23), the rotational position of the accessory 160 is adjusted.

[0116] Subsequently, with reference to FIGS. 23 to 25, the accessory 160 will be further described. In the present embodiment, the frame body 161 and the functional portion 164 are separate parts, and the functional portion 164 can be removed from the frame body 161. Therefore, the frame body 161 can be shared among various accessories 160. As a result, the cost of various accessories 160 can be reduced.

[0117] Here, with reference to FIGS. 23 to 25, the second accessory 160B to the fourth accessory 160D will be described. 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 includes a spread lens 164B as a functional part 164. As shown in FIG. 24, the third accessory 160C includes a honeycomb louver 164C as a functional part 164. As shown in FIG. 25, the fourth accessory 160D includes a diffusing lens 164D as a functional part 164.

[0118] According to the present embodiment, in the first accessory 160A to the fourth accessory 160D, the frame body 161 can be shared. Therefore, the cost of the first accessory 160A to the fourth accessory 160D can be reduced.

[0119] As described above, Embodiment 4 has been described with reference to FIGS. 17 to 25. For the lighting fixture 300A and the accessory 160 of the present embodiment, Japanese Patent Application Laid-Open No. 2015-228383 (hereinafter referred to as "Patent Document 4") discloses a lamp accessory in which an accessory is held on a lens by a magnet. However, in the lamp accessory of Patent Document 4, magnets are arranged at the centers of the accessory and the lens. As a result, there is a possibility that light is blocked by the magnet and light unevenness occurs. On the other hand, according to the present embodiment, the magnet 163 is arranged at a position where it does not overlap with the light passing region 162. Therefore, since the magnet 163 does not block the light L, the occurrence of light unevenness can be suppressed.

[0120] In the present embodiment, the lighting fixture 300A is a downlight, but the lighting fixture 300A is not limited to a downlight. The lighting fixture 300A may be, for example, a spotlight.

[0121] [Embodiment 5] Next, Embodiment 5 will be described with reference to FIGS. 26 to 30. However, matters different from Embodiments 1 to 4 will be described, and descriptions of matters the same as those in Embodiments 1 to 4 will be omitted. Embodiment 5 is different from Embodiments 1 to 4 in that a load is applied to the light source unit 310.

[0122] FIG. 26 is a perspective view showing the lighting fixture 300B of the present embodiment. FIG. 27 is a perspective view showing a part of the lighting fixture 300B of the present embodiment. As shown in FIGS. 26 and 27, the lighting fixture 300B of the present embodiment has substantially the same configuration as the lighting fixture 300A described in Embodiment 4. The lighting fixture 300B includes a pressing portion 350, unlike the lighting fixture 300A.

[0123] Specifically, as shown in FIG. 27, the lighting fixture 300B further includes a holding member 340 and a pressing portion 350. The light leakage restricting portion 312 has a support member 313.

[0124] The support member 313 is rotatably supported by a fixed frame 320. By rotatably supporting the support member 313, the fixed frame 320 rotatably supports the light source unit 310. The holding member 340 is fixed to the fixed frame 320 to hold the support member 313 on the fixed frame 320. 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.

[0125] 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.

[0126] 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 placement portion 322 on which the support member 313 described with reference to FIG. 28 is placed. When the light source unit 310 rotates, the support member 313 slides on the placement portion 322 while being placed on the placement portion 322. The holding member 340 described with reference to FIG. 27, when fixed to the fixed frame 320, covers the support member 313 placed on the placement portion 322. As a result, the support member 313 is held by the fixed frame 320.

[0127] 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. Further, the pressing portion 350 includes a first pressing portion 351 and a second pressing portion 352.

[0128] 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 the present embodiment, the first holding member 341 has three first pressing portions 351.

[0129] The first holding portion 342 is annular. The first pressing portion 351 is provided on the inner peripheral side of the first holding portion 342 and is connected to the first holding portion 342. In the present embodiment, the first pressing portion 351 is a part of the first holding member 341. Specifically, the first pressing portion 351 is formed by being cut and raised.

[0130] The first holding member 341 is an elastic member. The first pressing portion 351 is deformed so as to always 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.

[0131] The second holding member 343 has a second holding portion 344 and a second pressing portion 352. In the present embodiment, the second holding member 343 has two second pressing portions 352. Since the configuration of the second holding member 343 is substantially the same as that of the first holding member 341, a detailed description thereof will be omitted.

[0132] Subsequently, the lighting fixture 300B of the present embodiment will be further described with reference to FIG. 27. As shown in FIG. 27, the fixed frame 320 has a rotation restricting portion 321. Further, the light source unit 310 has a contact portion 314. More specifically, the light leakage restricting portion 312 has the contact portion 314.

[0133] The contact portion 314 contacts the rotation restricting portion 321 when the light source unit 310 rotates. When the contact portion 314 contacts the rotation restricting portion 321, the rotation of the light source unit 310 is restricted.

[0134] In the present embodiment, the pressing portion 350 is disposed in the vicinity of the rotation restricting portion 321. As a result, since the support member 313 is pressed by the pressing portion 350 in the vicinity of the rotation restricting portion 321, it is possible to suppress the support member 313 from lifting in the vicinity of the rotation restricting portion 321. Therefore, the rotation of the light source unit 310 can be restricted by bringing the contact portion 314 into contact with the rotation restricting portion 321.

[0135] The above has described Embodiment 5 with reference to FIGS. 26 to 30. Regarding the lighting fixture 300B of the present embodiment, Japanese Patent Application Laid-Open No. 2009-176594 (hereinafter referred to as "Patent Document 5") discloses a lighting fixture including a frame base, a rotating part, a pressing plate, a lamp unit, an arm, and a terminal block. The frame base is embedded in the ceiling. The rotating part is rotatably provided horizontally on the upper part of the frame base. The pressing plate presses the rotating part rotatably. The lamp unit is provided on the rotating part. The arm is attached to the frame base or the pressing plate via a support shaft so as to be able to stand up. The terminal block is provided at the tip of the arm. However, in the lighting fixture of Patent Document 5, the rotation position of the lamp unit may vary due to fluctuations in the tension of the cable connected to the terminal block. For example, after an operator rotates the lamp unit, the lamp unit may rotate back to its original rotation position due to fluctuations in the cable tension. Also, when the lighting fixture is installed on an inclined ceiling, the lamp unit may rotate naturally and the light irradiation direction may vary. In contrast, according to the present embodiment, since the pressing part 350 presses the support member 313, the support member 313 is always under the load from the pressing part 350. As a result, even if the cable tension fluctuates, the rotation position of the light source unit 310 does not easily vary. Therefore, even if the cable tension fluctuates after the operator rotates the light source unit 310, it is possible to suppress the light source unit 310 from rotating in response to the fluctuations in the cable tension. Also, when the lighting fixture 300B is installed on an inclined ceiling, it is possible to suppress the light source unit 310 from rotating naturally and the light irradiation direction from varying.

[0136] Furthermore, according to the present embodiment, the pressing part 350 is formed by being cut and raised on the holding member 340. Therefore, it is possible to suppress the rotation of the light source unit 310 without increasing the number of parts.

[0137] [Embodiment 6] Next, Embodiment 6 will be described with reference to FIGS. 31 to 35. However, matters different from Embodiments 1 to 5 will be described, and descriptions of matters the same as those in Embodiments 1 to 5 will be omitted. Embodiment 6 is different from Embodiments 1 to 5 in that the lighting fixture 200D includes a louver part 24.

[0138] FIG. 31 is a front view showing the lighting fixture 200D of the present embodiment. FIG. 32 is a perspective view showing the louver part 24. As shown in FIG. 31, the lighting fixture 200D of the present embodiment is a spotlight. The lighting fixture 200D has substantially the same configuration as the lighting fixture 200A described in Embodiment 1. Different from the lighting fixture 200A, the lighting fixture 200D further includes a louver part 24. The louver part 24 is a flare cut louver.

[0139] Specifically, as shown in FIG. 31, the luminaire body 2 has a reflecting member 22 and a luminaire housing 23. The light source 21 and the reflecting member 22 are disposed inside the luminaire housing 23. The louver part 24 is disposed inside the reflecting member 22. Hereinafter, for convenience of explanation, the side on which the louver part 24 is disposed with respect to the light source 21 is defined as the "front side", and the side on which the light source 21 is disposed with respect to the louver part 24 is defined as the "rear side", and the front-rear direction is defined.

[0140] As shown in FIGS. 31 and 32, the louver part 24 has an inner louver 241 and an outer louver 242. The inner louver 241 is cylindrical and extends in the front-rear direction. The outer louver 242 is disposed outside the inner louver 241. The outer louver 242 is cylindrical and extends in the front-rear direction.

[0141] FIG. 33 is a cross-sectional view of the luminaire body 2 taken along the line C-C of FIG. 31. As shown in FIG. 33, the reflecting member 22 is disposed in front of the light source 21. The reflecting member 22 is cylindrical with openings at the front end and the rear end. Specifically, the diameter of the reflecting member 22 gradually increases as it moves away from the light source 21. For example, the reflecting member 22 is substantially frustoconical. When viewed from the front-rear direction, the opening at the rear end of the reflecting member 22 overlaps with the light source 21.

[0142] The light generated by the light source 21 is emitted from the opening at the rear end of the reflecting member 22 to the inside of the reflecting member 22. A part of the light emitted to the inside of the reflecting member 22 is reflected forward on the inner surface of the reflecting member 22. Another part of the light emitted to the inside of the reflecting member 22 passes through the inner louver 241 or the outer louver 242. Note that the louver portion 24 is a low-reflection member. Therefore, most of the light hitting the louver portion 24 is absorbed by the louver portion 24 without being reflected. For example, a low-reflection layer may be provided on the surface of the louver portion 24. Specifically, the surface of the louver portion 24 may be painted black. However, the louver portion 24 only needs to be configured to attenuate and emit the light incident on the louver portion 24, and is not limited to the configuration in which a low-reflection layer is provided on the surface of the louver portion 24.

[0143] Since the louver portion 24 is a low-reflection member, unnecessary light components that cause flare (ring-shaped light and dark) on the irradiation surface can be reduced. Therefore, flare on the irradiation surface can be reduced. Also, since the louver portion 24 is a low-reflection member, the light emitted obliquely forward from the louver portion 24 can be reduced. As a result, the light entering the field of view of the user located obliquely in front of the luminaire body 2 is reduced, and glare can be reduced.

[0144] Subsequently, the lighting fixture 200D of the present embodiment will be further described with reference to FIGS. 34 and 35. FIG. 34 is a diagram showing the configuration of the luminaire body 2 included in the lighting fixture 200D of the present embodiment. FIG. 35 is a diagram showing the configuration of the luminaire body 2 according to Comparative Example 1.

[0145] As shown in FIG. 34, the light source 21 is a planar light source and has a light-emitting surface 21a from which light is generated. When a virtual line connecting the end portion 21b of the light-emitting surface 21a on one side with respect to the optical axis LX extending forward from the center of the light-emitting surface 21a and the front end portion 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 portion 242a of the outer louver 242 is located outside the reference line HL.

[0146] As described above, according to the present embodiment, the rear end portion 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 portion 22a of the reflecting member 22. Therefore, even if the front end portion 22a of the reflecting member 22 is curved, it is difficult for unevenness of ring-shaped light to occur on the light irradiation surface. When the reflecting member 22 is manufactured by thinning a metal material such as aluminum with a spatula, the front end portion 22a of the reflecting member 22 is likely to be curved.

[0147] Specifically, as shown in FIG. 35, when the rear end portion 242a of the outer louver 242 is located inside the reference line HL, the light is likely to hit the front end portion 22a of the reflecting member 22. When the front end portion 22a of the reflecting member 22 is curved, the light hitting the front end portion 22a of the reflecting member 22 is diffused more outward than the light hitting the rear side of the front end portion 22a of the reflecting member 22. As a result, unevenness of ring-shaped light is likely to occur on the light irradiation surface. On the other hand, according to the present embodiment, since the light traveling toward the front end portion 22a of the reflecting member 22 is blocked by the outer louver 242, it is difficult for unevenness of ring-shaped light to occur on the light irradiation surface.

[0148] The louver portion 24 will be further described with reference to FIG. 34. As shown in FIG. 34, in the present embodiment, the rear end portion 241a of the inner louver 241 is located inside the reference line HL. Therefore, it is possible to suppress a reduction in the amount of light emitted from the lighting fixture 200D. However, the rear end portion 241a of the inner louver 241 may be located outside the reference line HL. When the rear end portion 241a of the inner louver 241 is located outside the reference line HL, it becomes even more difficult for the light to hit the front end portion 22a of the reflecting member 22.

[0149] The above has described Embodiment 6 with reference to FIGS. 31 to 35. For the lighting fixture 200D of the present embodiment, International Publication No. 2016 / 031957 discloses a sharpener in which the rear end of the outer louver and the rear end of the inner louver are located inside the reference line HL. However, as already described, when the rear end of the outer louver and the rear end of the inner louver are located inside the reference line HL, unevenness of light may occur on the light irradiation surface. On the other hand, according to the present embodiment, as already described, it is difficult for ring-shaped light unevenness to occur on the light irradiation surface.

[0150] Furthermore, according to the present embodiment, even if the front end 22a of the reflecting member 22 is curved, it is difficult for ring-shaped light unevenness to occur on the light irradiation surface. Therefore, since it is not necessary to process the reflecting member 22 with high precision, the reflecting member 22 can be easily formed.

[0151] In this embodiment, the rear end 242a of the outer louver 242 is located outside the reference line HL. However, when the rear end 241a of the inner louver 241 is located outside the reference line HL, the rear end 242a of the outer louver 242 may be located inside the reference line HL. That is, at least one of the rear end 242a of the outer louver 242 and the rear end 241a of the inner louver 241 may be located outside the reference line HL.

[0152] Also, in the present embodiment, the lighting fixture 200D is a spotlight, but the lighting fixture 200D is not limited to a spotlight. The lighting fixture 200D may be, for example, a downlight.

[0153] [Embodiment 7] Subsequently, Embodiment 7 will be described with reference to FIGS. 36 and 37. However, matters different from Embodiments 1 to 6 will be described, and descriptions of matters the same as those in Embodiments 1 to 6 will be omitted. In Embodiment 7, the configuration of the louver portion 24 is different from that in Embodiments 1 to 6. FIG. 36 is a diagram showing the configuration of the lamp body 2 included in the lighting fixture 200E of the present embodiment. FIG. 37 is a diagram showing the configuration of the lamp body 2 according to Comparative Example 2.

[0154] In the present embodiment, as shown in FIG. 36, when the virtual plane on which the front end portion 242b of the outer louver 242 is located is defined as the reference plane HS, the front end portion 241b of the inner louver 241 is located on the front side of the reference plane HS. In other words, the front end portion 241b of the inner louver 241 is arranged on the side farther from the light source 21 than the front end portion 242b of the outer louver 242.

[0155] As described above, according to the present embodiment, the front end portion 241b of the inner louver 241 is located on the front side of the reference plane HS. As a result, the number of reflection times of the light L hitting the inner surface of the inner louver 241 can be increased, so that the attenuation amount of the light passing through the inner louver 241 can be increased. Therefore, flare is less likely to occur on the irradiation surface of the light L.

[0156] Specifically, as shown in FIG. 37, when the front end portion 241b of the inner louver 241 is located on the rear side of the reference plane HS, the number of reflection times of the light L hitting the inner surface of the inner louver 241 is reduced. For example, the light L hitting the inner surface of the inner louver 241 may pass through the inner louver 241 with only one reflection. Therefore, the attenuation amount of the light L becomes insufficient, and flare may occur on the irradiation surface of the light L.

[0157] The inner louver 241 may be a low-reflection member. By the inner louver 241 being a low-reflection member, the attenuation amount of the light passing through the inner louver 241 can be further increased. Therefore, flare is even less likely to occur on the irradiation surface of the light L. For example, a low-reflection layer may be provided on the inner surface of the inner louver 241. Specifically, the inner surface of the inner louver 241 may be painted black. However, the inner louver 241 only needs to be configured to attenuate the light incident on the inner louver 241 and then emit it, and is not limited to the configuration in which a low-reflection layer is provided on the inner surface of the inner louver 241.

[0158] The above-described Embodiment 7 has been described with reference to FIGS. 36 and 37. Regarding the lighting fixture 200E of the present embodiment, International Publication No. 2016 / 163521 discloses a sharpener in which the front end of the inner louver portion is located on the rear side of the reference plane HS. However, as already described, when the front end of the inner louver portion is located on the rear side of the reference plane HS, flare may occur on the light irradiation surface. On the other hand, according to the present embodiment, as already described, flare is less likely to occur on the irradiation surface of the light L.

[0159] In the present embodiment, the front end 241b of the inner louver 241 is located on the front side of the reference plane HS. However, the front end 241b of the inner louver 241 may be located on the reference plane HS.

[0160] Also, in the present embodiment, the lighting fixture 200E is a spotlight. However, the lighting fixture 200E is not limited to a spotlight. The lighting fixture 200E may be, for example, a downlight.

[0161] [Embodiment 8] Subsequently, Embodiment 8 will be described with reference to FIGS. 38 to 42. However, matters different from Embodiments 1 to 7 will be described, and descriptions of matters the same as those in Embodiments 1 to 7 will be omitted. Embodiment 8 is different from Embodiments 1 to 7 in that the lighting fixture 300C includes the linear member 181.

[0162] FIG. 38 is a perspective view showing the lighting fixture 300C of the present embodiment. FIG. 39 is a perspective view showing a part of the lighting fixture 300C of the present embodiment. In FIG. 39, the linear member 181 is omitted for easy understanding.

[0163] As shown in FIG. 38, the lighting fixture 300C of the present embodiment is a downlight. The lighting fixture 300C has substantially the same configuration as the lighting fixture 300A described in Embodiment 4. The lighting fixture 300C further includes a linear member 181 and a retaining member 182, which are different from the lighting fixture 300A. Also, as shown in FIG. 39, the light source unit 310 has an insertion hole 315. More specifically, the light leakage restricting portion 312 has the insertion hole 315.

[0164] The linear member 181 is inserted into the insertion hole 315. The linear member 181 is, for example, a wire. The retaining member 182 is fixed to one end of the linear member 181. The retaining member 182 prevents the linear member 181 from coming out of the insertion hole 315. As shown in FIG. 39, the insertion hole 315 is a long hole that is long in the third direction D3. In the present embodiment, the third direction D3 is the vertical direction.

[0165] FIG. 40 is a perspective view showing the fixing frame 320. FIG. 41 is another perspective view showing the fixing frame 320. Specifically, FIG. 40 shows the fixing frame 320 viewed obliquely from above. FIG. 41 shows the fixing frame 320 viewed obliquely from below.

[0166] As shown in FIG. 40, the fixing frame 320 has a frame base 360 and a reflecting member 370. Hereinafter, the reflecting member 370 may be referred to as the "second reflecting member 370". The second reflecting member 370 is disposed inside the frame base 360.

[0167] The second reflecting member 370 is detachable from the frame base 360. As shown in FIG. 41, when an operator removes the second reflecting member 370 from the frame base 360, the operator removes the second reflecting member 370 along the third direction D3 from the lower surface opening 320a of the fixing frame 320. Similarly, when the operator attaches the second reflecting member 370 to the frame base 360, the operator inserts the second reflecting member 370 into the inside of the frame base 360 along the third direction D3 from the lower surface opening 320a of the fixing frame 320. Therefore, the insertion hole 315 described with reference to FIG. 39 extends along the direction in which the second reflecting member 370 is attached and detached.

[0168] FIG. 42 is a perspective view showing the second reflecting member 370. As shown in FIG. 42, a fixing hole 371 to which the fastening member B is fixed is formed on the peripheral surface of the second reflecting member 370. The other end of the linear member 181 is fixed to the second reflecting member 370 by the fastening member B. The fastening member B is, for example, a screw or a bolt.

[0169] As described above, Embodiment 8 has been described with reference to FIGS. 38 to 42. According to this embodiment, the insertion hole 315 extends in the direction of attaching and detaching the second reflecting member 370. As a result, when attaching and detaching the second reflecting member 370 to and from the frame base 360, it becomes difficult for the linear member 181 to be caught by the edge of the insertion hole 315. Therefore, the second reflecting member 370 can be attached and detached smoothly. Further, when attaching and detaching the second reflecting member 370, it becomes difficult for the linear member 181 to bend. Therefore, when attaching the second reflecting member 370 to the frame base 360, it becomes difficult for the linear member 181 to be sandwiched between the frame base 360, the lamp body 2, etc. and the second reflecting member 370.

[0170] As described above, embodiments of the present invention have been described with reference to the drawings (FIGS. 1 to 42). However, the present invention is not limited to the above-described embodiments, and can be implemented in various forms without departing from the gist thereof. Further, a plurality of components disclosed in the above embodiments can be modified as appropriate. For example, a certain component among all the components shown in one embodiment may be added to the components of another embodiment, or some of the components among all the components shown in one embodiment may be deleted from the embodiment.

[0171] The drawings schematically show each component mainly for easy understanding of the invention, and the thickness, length, number, interval, etc. of each illustrated component may be different from the actual ones for convenience in drawing preparation. Also, the configuration of each component shown in the above embodiment is an example and is not particularly limited, and it goes without saying that various changes can be made without substantially departing from the effects of the present invention.

Industrial Applicability

[0172] The present invention is useful in the field of lighting fixtures.

Explanation of Signs

[0173] 2: Luminaire body 3: Housing 3b: Side surface (one of a plurality of surfaces) 5: Power supply device (power generation unit) 6: Plug portion 7: Operation lever 8: Rotation stopper 9: Base member 21: Light source 71: Operation unit (first operation unit) 82: Rotation restricting projection (projection) 82a: Inclined surface 83: Operation unit (second operation unit) 100: Duct rail 200A: Lighting fixture P1: First rotation position P2: Second rotation position RD1: First rotation direction RD2: Second rotation direction

Claims

1. A housing attached to a duct rail, a luminaire body supported by the housing and having a light source for generating light, an operating lever rotatable in a first rotation direction and a second rotation direction opposite to the first rotation direction, protruding from the upper surface of the housing, detachable from the duct rail, and when the operating lever rotates from the first rotation position to the second rotation position, the posture is switched from the first posture to the second posture, and when the operating lever rotates from the second rotation position to the first rotation position, the posture is switched from the second posture to the first posture, a plug portion, a rotation stopper capable of freely transitioning between a first state that blocks 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, comprising: the upper surface of the housing is a surface facing the attached duct rail, the lower surface of the housing is a surface to which the luminaire body is connected, the rotation axis of the operating lever and the rotation axis of the plug portion are arranged in the vertical direction, the rotation stopper is composed of a single member, an operation knob for an operator to operate the rotation stopper, arranged on a side surface of the housing parallel to the longitudinal direction of the duct rail, and a protrusion that blocks rotation of the operating lever in the first rotation direction from the first rotation position to the second rotation position, the protrusion is located at a position overlapping the rotation locus of the operating lever when the rotation stopper is in the first state, and is located at a position below the position overlapping the rotation locus of the operating lever when the rotation stopper is in the second state and does not overlap the rotation locus of the operating lever in the first state, a lighting fixture.

2. the protrusion has an inclined surface, 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, the lighting fixture according to claim 1.

3. the protrusion has a contact surface that contacts when the operating lever rotates in the first rotation direction from the first rotation position to the second rotation position, the contact surface is arranged on the first rotation position side with respect to the inclined surface and is inclined toward the first rotation position side, the lighting fixture according to claim 2.

4. further comprising a base member that supports the rotation stopper so as to be freely transitionable between the first state and the second state, The lighting fixture according to any one of claims 1 to 3, wherein the base member generates an elastic force for returning the rotation stopper portion from the second state to the first state when the rotation stopper portion is in the second state.

5. The lighting fixture according to claim 4, wherein the rotation stopper portion and the base member are made of a single member.

6. The operation lever has a first operation portion that is operated by an operator. The lighting fixture according to any one of claims 1 to 5, wherein the first operation portion is disposed on the side surface of the housing where the operation knob is disposed.

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