JP2004247315A - Fitting device of lighting apparatus and lighting device equipped with the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fitting device of a lighting apparatus in which detachment of the main body can be made easily, and the thickness of the main body can be made thin and the outside dimension can be made small. <P>SOLUTION: The fitting device of this lighting apparatus is provided with a locking pawl 3 capable of being locked to the hooking ceiling 2 at the upper face of the main body part 1 of nearly circular disc shape. Furthermore, a locking part 7 of pawl shape which is locked to the engaging part 6 of the lighting apparatus main body 4 in the state in which the main body part 1 is inserted into the insertion hole 5 of the lighting apparatus main body 4, and which is capable of free movement transversely, and capable of free rising and setting to the outer peripheral face part of the main body part 1 is provided at the outer peripheral face part of the main body part 1. Furthermore, a release operating part 8 for releasing the lock of the locking part 7 to the engagement part 6 of the lighting apparatus main body 4 with the operating direction in transverse direction is provided at the main body part 1. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

  The present invention relates to a lighting device mounting device for mounting a lighting device on a hanging ceiling and a lighting device provided with the same.

  Japanese Utility Model Laid-Open No. 5-90726 discloses an apparatus for mounting a lighting fixture for hooking the lighting fixture to a ceiling. In the conventional example disclosed in Japanese Utility Model Laid-Open Publication No. 5-90726, as shown in FIG. 15, a mounting device A 'is hooked on the upper surface of a main body 1' constituting the main body of the mounting device A ', and is locked to a ceiling 2. A locking claw is provided so as to be freely movable. A locking portion 7 'is provided on the outer peripheral surface of the main body 1' so as to be movable in the lateral direction and to be able to protrude and retract from the outer peripheral surface of the main body 1 '. A vertically movable button 50 is provided for performing an operation for pulling the locking portion 7 '. Then, the hook claw provided on the mounting device A 'is hooked and locked to the hanging ceiling 2 mounted on the ceiling 44, and in this state, the insertion hole 5 of the lighting fixture main body 4 is inserted into the main body 1' of the mounting device A '. At the same time, the engaging portion 6 'of the lighting fixture main body 4 is engaged with an engaging portion 7' projecting from the main body portion 1 '. In the conventional example, the electric connection means 53 is provided on the outer peripheral surface of the main body 1 '.

On the other hand, when removing the lighting fixture main body 4, the operation button 50 is pushed upward, the locking portion 7 'is pulled out from the engaging portion 6', and then the lighting fixture main body 4 is pulled down to remove. Was.
Japanese Utility Model Publication No. 5-90726

  However, in the above-described conventional example, the locking portion 7 'is movable in the lateral direction and is able to protrude and retract from the peripheral surface of the main body 1', but since the operation button 50 moves in the vertical direction, It is necessary to convert the vertical movement of the operation button 50 into the horizontal movement of the locking portion 7 ', and there is a problem that the structure becomes complicated. In addition, since the operation of the operation button 50 is in the vertical direction, and the operation stroke of the operation button is also required, there is a problem that the vertical thickness of the main body 1 ′ necessarily increases. In order to operate the operation button 50 when removing the lighting apparatus main body 4, the operation button 50 is pushed upward with one finger of one hand and the lighting apparatus main body 4 is supported by another finger while performing the operation. There is a problem that an operation of pulling down the main body 4 is necessary, and it is difficult to remove the lighting fixture main body 4. In addition, since the two locking portions 7 ′ are operated by one operation button 50, there is a high possibility that the release operation force for operating one operation button is high, and one locking button 7 ′ is operated. Even if the portion 7 'is malfunctioning, it is difficult to understand, and there is a risk that the lighting fixture main body 4 may be attached halfway. Further, since the electrical connection means 53 is provided on the outer peripheral surface of the main body 1 ', this becomes a factor of increasing the outer dimensions of the mounting device A' besides the locking of the locking portion 7 'and the operation button. There was a problem that the external dimensions of A 'became large.

  The present invention has been made in view of the above-mentioned problems of the conventional example, and has a simple structure, a thin main body portion, and can easily remove a lighting fixture main body. An object of the present invention is to provide a lighting fixture mounting device that can be reduced in external dimensions and a lighting device including the same.

  In order to solve the above-mentioned problems, a lighting fixture mounting apparatus according to the present invention is provided with a locking claw 3 which is hooked on an upper surface of a main body 1 having a substantially disk-shaped outer shape and which can be locked to a ceiling 2. In a state where the main body 1 is inserted into the insertion hole 5 of the lighting fixture main body 4 on the outer peripheral face of the lighting fixture main body 1, the main body 1 is laterally movable to be locked to the engaging portion 6 of the lighting fixture main body 4, and A mounting device for a lighting fixture having a pair of claw-shaped locking portions 7 which can be retracted and retracted, and an operation direction for releasing locking of the locking portion 7 to the engaging portion 6 of the lighting fixture body 4. Is provided on the main body 1, and the locking portion 6 is released from the engaging portion 6 by operating each of the pair of releasing operation portions 8 in a direction away from each other. In this manner, the moving direction of the locking portion 7 and the moving direction of the release operating portion 8 Since the horizontal direction is the same, the structure can be simplified, the thickness of the main body 1 in the vertical direction can be reduced, and when removing the luminaire main body 4, when removing the lighting fixture main body 4, the other four except for the thumb 48 a of both hands 48. With the lighting device main body 4 supported by the fingers 48b, the release operation section 8 can be operated by operating the thumbs 48a of both hands in the lateral direction, and the lighting device main body 4 can be easily supported while being well-balanced by both hands 48. The engagement of the locking portions 7 with the engaging portions 6 can be released, so that the releasing operation can be easily performed. In this case, the thumb 48 a is naturally moved in the lateral direction while supporting the lighting fixture main body 4 with both hands 48. The operation unit 8 can be operated and the release operation can be performed more easily. Further, since the locking unit 7 and the release operation unit 8 are provided in a pair, the operation of each locking unit 7 can be confirmed. Separate corresponding to the locking part 7 Can be confirmed by the removal operation unit 8, one engagement becomes possible to easily confirm if there was incomplete.

  In addition, a pair of locking portions 7 and a release operation portion 8 are provided along a straight line passing through the center of the substantially disk-shaped main body 1 and crossing the outer peripheral surface of the substantially disk-shaped main body 1. It is preferable that the locking portion 7 operated by the release operation portion 8 can be freely moved in and out of mutually symmetrical positions on the outer peripheral surface portion of the substantially disk-shaped main body portion 1. With such a configuration, the locking portion 7 and the releasing operation portion 8 can be arranged in a rational arrangement relationship with respect to the main body portion 1, thereby achieving compactness.

  Further, the lighting device of the present invention includes a lighting device mounting device A according to claim 1 or 2, an insertion hole 5 for inserting the main body 1 of the lighting device mounting device A, and a lighting device mounting device A. And a lighting device main body 4 provided with an engaging portion 6 to which the locking portion 7 is locked. This makes it possible to provide a lighting device provided with a lighting fixture mounting device having the above-described effects.

  In the present invention, since the operation direction of the release operation unit and the movement direction of the locking unit are the same direction, the conventional example in which the operation direction of the release operation unit and the movement direction of the locking unit are different directions. In comparison, the thickness of the main body in the vertical direction can be reduced, the structure can be simplified and integrated, the assemblability is improved, and when removing the lighting fixture main body, except for the thumb of both hands, While the lighting fixture body is supported by the four fingers, the release operation section can be operated by operating the thumbs of both hands in the lateral direction, and the lighting fixture body can be easily balanced while supporting the lighting fixture body with both hands in a well-balanced manner. The stop can be disengaged from both engagement portions, and in this case, the release operation portion can be operated by the natural lateral movement of the thumb while supporting the lighting fixture body with both hands, so that the release operation is easier. Can be performed at the same time. It can be confirmed by separate unlocking portion corresponding confirmation work to each of the locking portion, in which one of the engagement can be easily confirmed if it was incomplete. Further, according to the present invention, it is possible to provide a lighting device provided with a lighting fixture mounting device having the above-described effects.

  The present invention will be described below based on embodiments shown in the accompanying drawings.

The main body 1 has a substantially disk shape, and a concave portion 11 is formed on the upper surface of the main body 1 as shown in FIG. As shown in FIG. A rectangular tube portion 9c having a rectangular horizontal cross section is vertically provided downward from the lower surface of the concave portion 11 formed in the upper surface of the main body portion 1 downward. A pair of terminal plate blocks 12 having the locking claws 3 and the connector electrodes 9a are mounted on the upper surface of the bottom of the concave portion 11 by mounting screws 13. A pair of locking claws 3 provided on the pair of terminal plate blocks 12 project upward from the upper surface of the main body 1. Further, a pair of connector electrodes 9a provided on a pair of terminal plate blocks 12 are inserted into the rectangular tube portion 9c, and the connector 9 is provided inside the rectangular tube portion 9c as described above. Is configured. A lock groove portion 9d is provided on one side surface in a direction parallel to the long side direction of the rectangular tube portion 9c having a rectangular shape in a plan view, and the lower end of the lock groove portion 9d is located above the lower end of the square tube portion 9c. Also, a lock portion 9e is provided inside the lock groove portion 9d.

  A pair of holes 14 are formed on the outer peripheral surface of the substantially disk-shaped main body 1 as shown in FIGS. 1, 7 and the like, and the positional relationship between the pair of holes 14 is substantially the same as that of the substantially disk-shaped main body 1. Are rotationally symmetric with respect to the center of rotation.

  The locking portion 7 has a horizontal plate shape, and the tip of the locking portion 7 has an arc having the same radius of curvature as the arc of the outer peripheral surface of the main body 1. A downward piece 15 protruding downward or obliquely downward is projected from one side end of the rear end of the locking portion 7 having a horizontal plate shape, and is directed rearward from the lower end of the downward piece 15. The connection piece 17 having a substantially L-shape is horizontally extended, and one side of the upper end portion of the release operation unit 8 having a vertical plate shape is connected to one piece of the connection piece 17 so that it can move. A body 18 is configured. Therefore, the upper ends of the connection piece 17 and the release operation part 8 are located below the horizontal plate-shaped locking part 7. At the center of the rear end of the locking portion 7 of the moving body 18, two guide portions 10 project toward the release operation portion 8. The projecting base of the two guides 10 is a stepped piece 10a projecting downward or obliquely downward, and the tip of the guide 10 is at the same level as the connecting piece 17. The space between the two guide portions 10 is a spring material storage portion 20. The locking portion 7 is provided with two long holes 19. In addition, a cap 8a is put on the release operation unit 8.

  Two sets of two support shafts 21 are provided inside the main body 1, and two long holes 19 of one moving body 18 are slidably provided on one set of the support shafts 21. Two long holes 19 of the other moving body 18 are slidably fitted into another set of support shafts 21. Here, the two moving bodies 18 are rotated by 180 ° on a horizontal plane. The locking portion 7 of one of the moving bodies 18 is configured to be able to protrude and retract from one of the pair of holes 14 provided in the opposed portion of the outer peripheral surface of the main body 1, The locking portion 7 can be freely protruded and retracted from the other hole 14. The two guides 10 provided on the moving body 18 are slidably fitted on the long side surfaces of the rectangular tube portion 9c having a rectangular shape in plan view and constituting the outer shell of the connector 9. 10 moves smoothly while being guided by the long side surface of the rectangular tube portion 9c.

  In the present invention, the pair of locking portions 7 and the release operation portion 8 pass through the center of the substantially disk-shaped main body 1 and form a straight line crossing the outer peripheral surface of the substantially disk-shaped main body 1. The locking portion 7 operated by the release operation portion 8 can freely protrude and retract from holes 14 provided at symmetrical positions on the outer peripheral surface of the substantially disk-shaped main body portion 1. The rational arrangement has been made to reduce the overall size.

  Here, in the present invention, the operation direction of the release operation unit 8 is the horizontal direction (horizontal direction), and the moving direction of the locking unit 7 is also the horizontal direction. Since the moving direction of the locking portion 7 is the same as the horizontal direction, as described above, the release operation portion 8 and the locking portion 7 are integrally provided on the movable body 18 which is movable in the horizontal direction (horizontal direction). With a simple structure, the locking portion 7 can be moved in the lateral direction by moving the release operation portion 8 in the lateral direction. In addition, by setting the operation direction of the release operation unit 8 and the moving direction of the locking unit 7 to be the same lateral direction, the stroke in the vertical direction can be reduced as compared with the case where the release operation unit 8 is moved in the vertical direction. Not only is it unnecessary, but there is no need for a conversion mechanism for converting the vertical movement into the horizontal movement as in the conventional example, and the vertical thickness of the main body 1 can be reduced and the structure can be simplified. Become.

  A coil spring 23 is disposed in a spring material accommodating portion 20 formed between the two guides 10 of the moving body 18, and both ends of the coil spring 23 are provided on both sides of the moving body 18 and the rectangular tube 9 c. The engaging portion 7 is in elastic contact with the surface on the short side, and projects outward from the hole 14 by the spring force of the coil spring 23. This state is the state shown in FIG. 3, FIG. 4, FIG. 6, FIG. 7, FIG. 8, FIG. 10 and the like, and as shown in FIG. The movable groove 9c has moved to near the both ends of the long side surface, and the lock groove 9d is exposed between the guides 10 of the two moving bodies 18. When the release operation portions 8 on both sides projecting downward are moved in a direction away from each other against the coil spring 23, the tips of the guide portions 10 come into contact with each other. Is drawn inward from the outer peripheral surface of the main body 1. In a state where the tips of the guide portions 10 abut each other, the lock grooves 9d are closed by the guide portions 10 as shown in FIG.

  A lid 30 also serving as a reinforcing plate is attached to an opening on the lower surface of the main body 1 by a mounting screw 31, and the lid 30 is provided with a pair of holes 32, and a lower portion provided in each of the pair of moving bodies 18. Are slidably inserted through the pair of holes 32. A central hole 33 is provided in the center of the lid 30, and the lower end of the connector 9 and the lower end of the lock groove 9d face the central hole 33. Here, the lower end of the connector 9 is fitted into the central hole 33. Here, when the locking portion 7 is pulled inward from the outer peripheral surface of the main body 1, the distal ends of the two guide portions 10 block the lower openings of the lock grooves 9 d, and the distal ends of the both guide portions 10 extend from the central hole 33. Is visible. Therefore, if neither of the locking portions 7 protrudes from the outer peripheral surface of the main body 1, both of the tips of the guide portions 10 appear to be exposed to the central hole 33. When one of the locking portions 7 of the portions 7 does not protrude from the outer peripheral surface of the main body 1, the tip of one of the guide portions 10 of the two guide portions 10 is exposed to the central hole 33 and appears. It can be confirmed that the locking portion 7 does not protrude outward.

  Here, the two-pole connector electrode 9a provided on the square tube portion 9c of the connector 9 has the two-pole connector electrode 9a arranged in parallel with the long side of the square tube portion 9c having a rectangular cross section. Since the direction along the long side of the square tube portion 9c and the straight line connecting the pair of release operation units 8 (that is, the moving direction of the moving body 18) are substantially the same direction, the long side of the square tube portion 9c is By effectively utilizing the length, the moving body 18 is moved while using the guide portion 10 as a guide, and when the leading ends of the two guide portions 10 are separated from each other, the lock groove 9d is opened and the connector 9 is connected to the connector 9 as described above. The space for the connection can be secured enough.

  A lock member 25 is further attached to the main body 1 so as to be able to protrude and retract from the upper surface of the main body 1. The lock member 25 is provided with a spring force projecting upward by a spring 26, and the lock member 25 projects upward from the upper surface of the main body 1 by the spring force.

  An operation window 34 is provided at the lower end of the peripheral surface of the main body 1, and a notch 35 is provided on the lid 30 so as to face the operation window 34. An operation portion 36 of the operation button 27 is movably arranged in the notch portion 35, and a groove portion 37 at a distal end portion of the operation portion 36 is slidably fitted into a portion of the cover 30 behind the notch portion 35. I have. The operation button 27 is provided with an inclined cam portion 38, and a contact portion 39 at the lower end of the lock member 25 is elastically in contact with the cam portion 38 by the spring force of the spring 26. Therefore, the contact portion 39 is normally pushed upward by the spring force of the spring 26, whereby the operating portion 36 is in contact with the inner surface of the peripheral surface of the main body 1 as shown in FIG. In this state, the upper end of the lock member 25 is set to protrude above the upper surface of the main body 1. On the other hand, when a finger is inserted through the operation window 34 and the operation portion 36 is pressed, the contact portion 39 is pressed down by the cam portion 38 against the spring 26 as shown in FIG. The part is set so as to be pulled down below the upper surface part of the main body part 1.

  The above is the configuration of the mounting device A according to the present invention.

  Next, as shown in FIG. 9, the lighting fixture 40 is configured by equipping the lighting fixture main body 4 with a lamp 41 and a fixture lighting block 42. The holder 43 having a cylindrical shape is provided at the edge of the insertion hole 5, and a groove is provided on the inner peripheral surface of the holder 43, and the groove forms the engaging portion 6.

  The hanging ceiling 2 is attached to the ceiling 44, and a pair of arc-shaped locking holes 2a are provided on the lower surface of the hanging ceiling 2, and one end of the locking hole 2a is a wide hole 2b. ing.

  To mount the lighting fixture 40 on the ceiling 44, first, the above-described mounting device A is mounted on the hanging ceiling 2 mounted on the ceiling 44. In mounting the mounting device A, first, the locking claws 3 of the pair of terminal plate blocks 12 provided on the main body 1 are inserted and locked in the locking holes 2a. In this case, the locking claw 3 is inserted from the wide hole 2b and moved to the other end of the arc-shaped locking hole 2a to mechanically and electrically hook the mounting device A to the ceiling 2. However, in this state, when the locking claw 3 is located in the wide hole portion 2b, the tip of the lock member 25 pressed against the lower surface of the hooking sealing 2 and elastically contacts the locking claw 3 is circular. In the state of reaching the other end of the arcuate locking hole 2a, it is fitted into a part of the locking hole 2a (the wide hole portion 2b in the embodiment), and unless the lock member 25 is lowered, that is, The mounting device A cannot be detached from the hooking ceiling 2 unless the operation button 27 is operated.

  Next, the lighting fixture main body 4 is held by hand, and the insertion hole 5 (that is, the cylindrical holder 43) is fitted into the disc-shaped main body 1 of the mounting device A from below. Here, since the locking portions 7 of the pair of moving bodies 18 protrude outward from the opposing positions of the peripheral surface portions of the main body 1 by the spring force of the coil springs 23, the locking portions 7 are fitted by the holder 43. Is pushed inward against the spring force of the coil spring 23, and when the engaging portion 6 and the engaging portion 7 face each other, the engaging portion 7 is elastically attached to the engaging portion 6 by the spring force of the coil spring 23. As a result, as shown in FIG. 11 (b), the lighting fixture main body 4 is attached to the attachment device A attached to the hooking ceiling 2.

  When the lighting device 40 is mounted on the mounting device A in this manner, the moving body 18 moves in a direction in which the locking portion 7 provided on the main body 1 of the mounting device A protrudes outward by the spring force of the coil spring 23. Therefore, as described above, the lock groove 9d is open without being blocked by the guides 10 of the two moving bodies 18. Therefore, when the lighting device 40 is mounted on the mounting device A, the connector 49 provided on the lighting device 40 is fitted into the connector 9 located in the central hole 33 without being disturbed by the guide portion 10 of the moving body 18. A lock receiver 49a provided on the connector 49 is fitted into the lock groove 9d to be locked on the lock 9e. Thus, the lighting fixture 40 is electrically connected. FIGS. 11A and 14B show a state where the connector 49 is connected.

  By the way, even in a state where only one of the locking portions 7 is engaged with the engaging portion 6, the lighting fixture main body 4 is temporarily attached to the mounting device A. In some cases, as described above, in the present invention, one of the locking portions 7 does not protrude outward for some reason. In the state (i.e., the state in which the locking portion 7 is not engaged with the engaging portion 6), the guide portion 10 appears to be exposed to the central hole 33, so that one of the locking portions 7 is engaged with the engaging portion 6. It can be confirmed that it is not incompletely installed. In addition, by confirming the operation of each locking portion 7 by confirming the position of a separate release operation portion corresponding to each locking portion 7, if one of the engagements is incomplete, it can be easily performed. It can be confirmed. Further, even if the connector 49 is to be connected to the connector 9 in an incompletely mounted state in which the one engaging portion 7 is not engaged with the engaging portion 6, the guide portion 10 is located in the central hole 33. As a result, since half of the opening of the lock groove 9d is closed, the lock receiver 49a cannot be fitted into the lock groove 9d as shown in FIG. It can be confirmed that the part 7 is in an incompletely mounted state in which the part 7 is not engaged with the engaging part 6.

  On the other hand, when removing the lighting fixture 40, it is performed as follows. That is, first, the lock between the lock receiver 49a and the lock portion 12b is released, and the connector 49 provided on the lighting fixture 40 is removed. Next, as shown in FIG. 12, both hands 48 are applied to the lower surface of the upper surface of the lighting device main body 4, and the lighting device main body 4 is supported by the other four fingers 48b except the thumb 48a. The thumbs 48a are respectively applied to the release operating portions 8 provided on a pair of moving bodies 18 hanging downward from the lower surface of the main body 1 of the mounting device A, and in this state, the thumb 48a is moved in the direction of the arrow in FIG. As a result, the release operation portions 8 of the two moving bodies 18 move in the direction of the arrow in FIG. 12, whereby the two moving bodies 18 move, and the locking portions 7 move inward and disengage from the engaging portions 6. The lighting fixture body 4 can be removed by pulling the lighting fixture body 4 downward with both hands 48 as it is.

  In this case, since the operation direction of the release operation unit 8 is the horizontal direction (horizontal direction), as shown in FIG. In this state, the locking portion 7 can be disengaged from the engaging portion 6 only by moving the thumbs 48a of both hands in the lateral direction, the operation of releasing the engagement can be easily performed, and the lighting fixture body 4 can be easily removed. Can be done.

  Further, unless the connector 49 is disconnected (that is, unless the electrical connection is released), even if an attempt is made to operate the release operation unit 8, the guide unit 10 hits the lock receiver 49a and the moving body 18 cannot be moved. In a state where the connecting portion 49 is connected, the locking portion 7 cannot be detached from the engaging portion 6 by mistake by operating the release operation portion 8.

It is the disassembled perspective view seen from the lower part of the mounting device of this invention. FIG. 2 is a partially exploded perspective view of the same as viewed from above. It is a top view same as the above. It is a bottom view same as the above. It is a side view same as the above. It is a front view same as the above. It is a bottom view in the state where the lid same as the above was removed. It is sectional drawing same as the above. It is an exploded perspective view showing the state where a lighting fixture is attached to a hanging ceiling using the attachment device of the present invention. (A) is a bottom view which shows the state which connected the connector of the lighting fixture same as the connector of a mounting apparatus, and (b) is sectional drawing in the state which attached the lighting fixture to the mounting apparatus. (A) is a bottom view of a state in which the connector of the lighting fixture is detached from the connector of the mounting device and the release operation part is drawn inward, and (b) is a state in which the locking portion is removed when the lighting fixture is removed from the mounting device. It is sectional drawing which shows the state which removed from the engagement part. It is explanatory drawing which shows the state which removes a lighting fixture same as the above. (A) is an explanatory view showing lock of the lock member, (b) is an explanatory view showing unlocking of the lock member, and (c) is a cross-sectional view taken along line XX of (a). (A) is an explanatory view showing a state in which the connector of the lighting fixture cannot be connected to the connector of the mounting apparatus, and (b) is an explanatory view showing a state in which the connector of the lighting apparatus is connected to the connector of the mounting apparatus. It is sectional drawing of a prior art example.

Explanation of reference numerals

DESCRIPTION OF SYMBOLS 1 Main body part 2 Hook ceiling 3 Locking claw 4 Lighting fixture main body 5 Insertion hole 6 Engaging part 7 Locking part 8 Release operation part 9 Connector 10 Guide

Claims (3)

  A locking claw that is hooked on the upper surface of the substantially disk-shaped main body and that can be locked to the ceiling is provided, and the main body is inserted into the insertion hole of the lighting fixture main body on the outer peripheral surface of the main body. What is claimed is: 1. A lighting device mounting apparatus comprising: a pair of claw-shaped locking portions which are movable in a lateral direction and which can be protruded and retracted with respect to an outer peripheral surface portion of a main body portion. By providing a pair of release operation portions in the main body portion, in which the operation direction for releasing the engagement of the device body with the engagement portion is a lateral direction, and each of the pair of release operation portions is operated in a direction away from each other. A mounting device for a lighting fixture, wherein the locking portion is released from the engaging portion.   A pair of locking portions and a release operation portion are provided along a straight line passing through the center of the substantially disk-shaped main body portion and crossing the outer peripheral surface of the substantially disk-shaped main body portion, and are operated by the release operation portion. 2. The lighting fixture mounting device according to claim 1, wherein the locking portion is configured to be able to protrude and retract from a position symmetrical with respect to the outer peripheral surface of the substantially disk-shaped main body.   3. The mounting device for a lighting fixture according to claim 1 or 2, an insertion hole for inserting a main body of the mounting device for the lighting fixture, and an engaging portion to which a locking portion of the mounting device for the lighting fixture is locked. And a lighting fixture having a lighting fixture body provided with the lighting device.

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