JP7394316B2 - Adapters, lighting devices and lighting fixtures - Google Patents

Description

TECHNICAL FIELD The present disclosure relates to adapters, lighting devices, and lighting fixtures.

2. Description of the Related Art Conventionally, adapters for electrically and mechanically connecting a lighting fixture to a hanging ceiling provided on a ceiling are known.

A lighting fixture adapter, which is an example of a conventional adapter, has a connecting portion to which a connector of the lighting fixture is connected for electrically connecting the lighting fixture and the lighting fixture adapter. The connection portion is electrically connected to a connector provided at the tip of the wiring of the lighting equipment in order to electrically connect the lighting equipment to the lighting equipment adapter (for example, see Patent Document 1).

Japanese Patent Application Publication No. 2015-76390

However, in the adapter of Patent Document 1, when electrically and mechanically connecting a lighting fixture and a ceiling hook, it is necessary to remove the glove of the lighting fixture, etc. after electrically and mechanically connecting the adapter to the ceiling ceiling. Disassemble and electrically connect the connector and adapter at the tip of the wiring provided on the lighting fixture. For this reason, there is a desire to easily connect a lighting fixture and an adapter by eliminating wiring for the lighting fixture.

Therefore, the present disclosure provides an adapter, a lighting device, and a lighting fixture that can easily connect a lighting fixture and an adapter by eliminating the wiring of the lighting fixture.

An adapter according to one aspect of the present disclosure is an adapter for electrically and mechanically connecting a hook ceiling and a lighting device, and includes a plurality of hooks detachably fixed to the hook ceiling to which power is supplied. a blade, a connector portion provided on the back surface of the adapter opposite to the surface on which the plurality of hooking blades are provided, conductive to the plurality of hooking blades, and supplying power to the lighting device; one or more locking portions that protrude from the outer circumferential surface so as to move forward and backward to fix the lighting device to the adapter, and the connector portion is electrically connected to a first power supply terminal provided on the lighting device. and a second power supply part that is electrically connected to a second power supply terminal provided to surround the first power supply terminal provided on the lighting fixture , and the one or more locking parts. each is in a first state in which it protrudes by a first amount from the outer peripheral surface of the adapter when the lighting fixture is fixed to the adapter .

Further, a lighting device according to an aspect of the present disclosure includes an adapter and a lighting fixture electrically connected to the adapter , and the adapter electrically and mechanically connects a ceiling hook and the lighting fixture. The adapter includes a plurality of hook blades that are removably fixed to the hook ceiling to which power is supplied, and a back surface of the adapter that is opposite to the surface on which the plurality of hook blades are provided. , a connector portion that is electrically connected to the plurality of hook blades and supplies power to the lighting device, the connector portion being electrically connected to a first power feeding terminal provided on the lighting device; and a second power feeding part electrically connected to a second power feeding terminal provided to surround the first power feeding terminal provided in the lighting fixture, the lighting fixture housing a light source and the light source. and a holder to which the adapter is removably attached, and the holder includes a holder that comes into contact with each of one or more locking portions when the lighting device is rotated in a predetermined direction. , a third convex portion is formed to change the amount of protrusion of the one or more locking portions from the outer circumferential surface of the adapter .

Further, a lighting device according to an aspect of the present disclosure is a lighting device that is electrically connected to a hook ceiling via an adapter, and is a holder that is fixed to the lighting device, and the adapter is detachably attached to the holder. a first power supply terminal provided on a holder to be attached and connected to a first power supply part of the adapter; and a second power supply terminal connected to a second power supply part of the adapter provided so as to surround the first power supply terminal. The adapter includes one or more locking portions that protrude from the outer circumferential surface of the adapter so as to be able to move forward and backward, thereby fixing the lighting fixture to the adapter, and the lighting fixture includes a light source and a light source. and a holder to which the adapter is detachably attached. By coming into contact with them, a third convex portion is formed that changes the amount of protrusion of the one or more locking portions with respect to the outer circumferential surface of the adapter .

The adapter and the like of the present disclosure can easily connect the lighting equipment and the adapter by eliminating the wiring of the lighting equipment.

FIG. 1 is a perspective view of a lighting device and a hook ceiling in which an adapter is attached to the lighting device in an embodiment. FIG. 2 is an exploded perspective view of the lighting device in the embodiment. FIG. 3 is an exploded perspective view of the adapter in the embodiment. FIG. 4 is a cross-sectional view of the lighting device taken along line IV-IV in FIG. FIG. 5 is a partially enlarged sectional view showing a first state in which the lighting fixture according to the embodiment is normally fixed to the adapter. FIG. 6A is a plan view schematically showing the amount of protrusion of the first locking portion and the second locking portion from the outer peripheral surface of the adapter. FIG. 6B is an enlarged schematic view of the fixing part of the second locking part. FIG. 7 is a plan view of the lighting device according to the embodiment when viewed from the hook ceiling side. FIG. 8A is a partially enlarged sectional view showing the relationship between the adapter and the holder along line VIII-VIII in FIG. 7. FIG. FIG. 8B is a partially enlarged sectional view showing the holder in FIG. 8A rotated in the direction of the arrow in FIG. 7. FIG. FIG. 9A is a diagram showing a cross-sectional view of the holder and a plan view of the adapter in the relationship between the adapter and the holder in the state of FIG. 8A. FIG. 9B is a diagram showing a cross-sectional view of the holder and a plan view of the adapter in the relationship between the adapter and the holder in the state of FIG. 8B. FIG. 10 is a partially enlarged sectional view showing a second state in which the lighting fixture according to the embodiment is temporarily fixed to the adapter. FIG. 11A is a partially enlarged sectional view showing a first state in which a lighting fixture according to a modification of the embodiment is normally fixed to an adapter. FIG. 11B is a partially enlarged sectional view showing a first state in which the lighting fixture according to the modification of the embodiment is normally fixed to the adapter.

Note that the embodiments described below are all inclusive or specific examples. The numerical values, shapes, materials, components, arrangement positions and connection forms of the components, steps, order of steps, etc. shown in the following embodiments are examples, and do not limit the present disclosure. Further, among the constituent elements in the following embodiments, constituent elements that are not described in the independent claims will be described as arbitrary constituent elements.

Furthermore, each figure is a schematic diagram and is not necessarily strictly illustrated. Moreover, in each figure, the same reference numerals are attached to the same constituent members. Furthermore, in the following embodiments, expressions such as "substantially parallel" are used. For example, "substantially parallel" does not only mean completely parallel, but also means substantially parallel, that is, including an error of, for example, several percent. Further, "substantially parallel" means parallel to the extent that the effects of the present disclosure can be achieved. The same applies to other expressions using "abbreviation".

In the following description, the vertical direction of the lighting device will be referred to as the Z-axis direction, and the direction in which the first locking portion and the second locking portion are arranged will be referred to as the Y-axis direction. A direction perpendicular to each of the Z-axis direction and the Y-axis direction is referred to as the X-axis direction. Further, in the Z-axis direction, the vertically upward direction is referred to as the Z-axis plus direction, and the opposite direction is referred to as the minus direction. The same applies to FIG. 2 and subsequent figures.

Hereinafter, embodiments will be specifically described with reference to the drawings.

(Embodiment)
<Configuration>
FIG. 1 is a perspective view of a lighting device 1 and a hook ceiling 3 in which an adapter 10 is attached to a lighting device 100 in the embodiment.

As shown in FIG. 1, a lighting device 1 is a device that is fixed to a ceiling, a wall, etc., and can illuminate a space around the fixed location. The lighting device 1 is, for example, a ceiling light, a base light, or the like. Specifically, the lighting device 1 is fixed to the ceiling hook 3 while being electrically and mechanically connected to the ceiling hook 3 disposed on the ceiling.

FIG. 2 is an exploded perspective view of the lighting device 1 in the embodiment. FIG. 3 is an exploded perspective view of the adapter 10 in the embodiment.

As shown in FIGS. 1 to 3, the lighting device 1 includes an adapter 10 and a lighting fixture 100.

<Adapter 10>
The adapter 10 is a lighting fixture adapter that electrically and mechanically connects the ceiling hanging ceiling 3 and the lighting fixture 100. The adapter 10 is attached to and fixed to the hook ceiling 3 by being rotated relative to the hook ceiling 3.

The adapter 10 includes a housing 20, a first locking part 31, a second locking part 32, an elastic member 40, a first terminal 51, a second terminal 52, a third terminal 53, and a fourth terminal 54. , a connector section 70, a lock section 80, and a lock release button 90.

[Case 20]
The housing 20 is a cylindrical housing that is flat in the Z-axis direction and houses each component included in the adapter 10. The housing 20 is provided with a first terminal 51 and a second terminal 52, a third terminal 53 and a fourth terminal 54, a connector portion 70, and a first locking portion 31 and a second locking portion 32. .

The housing 20 is formed with a front surface 10a that faces the hook ceiling 3, and a back surface 10b opposite to the front surface 10a. The surface 10a is a surface on the positive side of the Z-axis, and is approximately parallel to the XY plane. Further, the back surface 10b is a surface on the negative side of the Z-axis, and is substantially parallel to the XY plane.

The housing 20 has a main body portion 21 forming a front surface 10a and a cover 22 forming a back surface 10b.

The main body portion 21 is a cylindrical container with a bottom and flat in the Z-axis direction, which is made of an insulating resin material and accommodates each component included in the adapter 10 . The main body part 21 has a cylindrical side wall part 21a that opens an end in the negative Z-axis direction, and a bottom part 21b whose end in the positive Z-axis direction forms the surface 10a of the casing 20.

As shown in FIG. 2, a hook blade 51a of the first terminal 51 and a hook blade 52a of the second terminal 52 protrude from the surface 10a of the main body portion 21 in the positive direction of the Z-axis. The bottom portion 21b of the main body portion 21 is formed with an insertion hole through which the first terminal 51 and the second terminal 52 are inserted.

In the center part of the surface 10a of the main body part 21, there is a reference surface which is a surface on the Z-axis positive direction side and which is a contact surface that comes into contact with the hook ceiling 3 when the adapter 10 is attached to the hook ceiling 3 in FIG. 29 is formed. The shape of the reference surface 29 in plan view is a substantially rectangular frame shape.

FIG. 4 is a cross-sectional view of the lighting device 1 taken along the line IV-IV in FIG. FIG. 5 is a partially enlarged sectional view showing a first state in which the lighting fixture 100 according to the embodiment is normally fixed to the adapter 10.

As shown in FIGS. 3 to 5, the side wall portion 21a of the main body portion 21 is formed with a first opening 21c and a second opening 21d. The side wall portion 21a is an outer circumferential surface portion between the front surface 10a and the back surface 10b of the main body portion 21, and forms the outer circumferential surface 10c of the adapter 10. The first locking portion 31 projects outward (in the radial direction) from the outer peripheral surface 10c of the main body portion 21 in a state where the first locking portion 31 is inserted through the first opening 21c. From the second opening 21d, the second locking portion 32 projects outward from the outer circumferential surface 10c of the main body portion 21 in a state where the second locking portion 32 is inserted. The outer circumferential surface 10c of the main body portion 21 constitutes a part of the outer circumferential surface 10c of the adapter 10.

Further, as shown in FIGS. 2 and 3, a second convex portion 21e that engages with a first convex portion 124 formed on the holder 120 of the lighting fixture 100 is formed on the side wall portion 21a of the main body portion 21. . The second convex portion 21e rotates around the central axis O of the adapter 10 (rotates the lighting fixture 100 in a predetermined direction) and engages with the first convex portion 124 of the holder 120, thereby making the lighting fixture 100 releases the first state fixed to the adapter 10. That is, when the first state in which the lighting fixture 100 is fixed to the adapter 10 is released, the second convex portion 21e engages with the first convex portion 124 formed on the lighting fixture 100, thereby fixing the lighting fixture 100 to the second convex portion 21e. The lighting device 100 is temporarily fixed to the adapter 10 by transitioning the first state in which it is fixed to the adapter 10 to the second state in which it is temporarily fixed. The second convex portion 21e protrudes in the radial direction from the outer circumferential surface 10c of the side wall portion 21a. The second convex portion 21e has an inclined surface 21e1 inclined with respect to the Z-axis direction. The inclined surface 21e1 is inclined downward with respect to the rotation direction of the lighting fixture 100. In the present embodiment, the lighting fixture 100 can be rotated in only two directions (clockwise and counterclockwise), so the second convex portion 21e has two inclined surfaces 21e1. In this embodiment, the second convex portion 21e has a substantially triangular shape when the outer circumferential surface 10c of the side wall portion 21a is viewed from above. Here, the central axis O is approximately parallel to the Z-axis direction.

When the lighting fixture 100 rotates, the first convex part 124 of the lighting fixture 100 slides in contact with the inclined surface 21e1 of the second convex part 21e, so that the first convex part 124 and the second convex part 21e , exerts a biasing force to move the lighting fixture 100 in the negative Z-axis direction.

The cover 22 is a plate-shaped member that is made of, for example, an insulating resin material and covers the Z-axis negative direction side of the main body portion 21 . The cover 22 closes the opening of the main body portion 21 on the Z-axis minus direction side, and constitutes an end portion of the housing 20 on the Z-axis minus direction side. The cover 22 is fixed to the main body part 21 with a fixing member such as a screw 99.

A first insertion opening portion 22a and a second insertion opening portion 22b are formed in the center portion of the cover 22.

As shown in FIGS. 3 and 4, the first insertion opening portion 22a forms a circular opening surface in a plan view into which a first power supply terminal 123a of a holder 120, which will be described later, is inserted. The opening surface of the first insertion port 22a is orthogonal to the central axis O.

Further, the second insertion opening portion 22b has an annular opening surface in plan view into which a second power supply terminal 123b of the holder 120, which will be described later, is inserted. The second insertion opening portion 22b is formed around (surrounding) the first insertion opening portion 22a, and is formed concentrically with respect to the first insertion opening portion 22a.

The depth direction of the first insertion opening portion 22a and the second insertion opening portion 22b, and the attachment/detachment direction of the first power supply terminal 123a and the second power supply terminal 123b are approximately parallel to the Z-axis direction.

[First locking part 31 and second locking part 32]
The first locking portion 31 and the second locking portion 32 are members made of resin that allow the adapter 10 to hold the lighting fixture 100 in a predetermined posture. That is, the first locking part 31 and the second locking part 32 are members for locking the lighting fixture 100 to the adapter 10. The first locking portion 31 and the second locking portion 32 fix the lighting fixture 100 to the adapter 10 by protruding from the outer circumferential surface 10c of the adapter 10 so as to be freely retractable. The first locking part 31 and the second locking part 32 move along the Y-axis direction so as to be synchronized with each other. In this embodiment, two locking portions are used, but the number of locking portions may be three or more, or may be one.

The first locking portion 31 is urged outward from the inside of the housing 20 by the elastic member 40 and protrudes toward the outside of the main body 21 from the first opening 21 c of the main body 21 . The second locking portion 32 is urged outward from the inside of the housing 20 by the elastic member 40 and protrudes toward the outside of the main body 21 from the second opening 21 d of the main body 21 .

Each of the first locking portion 31 and the second locking portion 32 includes a locking body 33 and an engagement protrusion 34 .

Each of the locking bodies 33 is provided in the first opening 21c and the second opening 21d of the main body 21, and a portion thereof protrudes from the outer circumferential surface 10c of the main body 21. The locking body 33 and the engagement protrusion 34 are integrally formed.

Each locking body 33 has a rectangular flat plate shape that is flat in the Z-axis direction. The protruding portion of the locking body 33 that protrudes from the outer circumferential surface 10c of the main body 21 has an arc shape that follows the shape of the outer circumferential surface 10c of the main body 21. The protruding portion of each locking body 33 also forms a part of the outer circumferential surface 10c of the adapter 10. The protruding portion of each locking body 33 becomes a portion that fixes the lighting fixture 100 to the adapter 10 by engaging with the holder 120. The protruding portion of each locking body 33 is formed in a stepped shape.

Specifically, each of the locking bodies 33 has a fixing part 35 and a temporary fixing part 36, which are formed on the protruding part of the locking body 33.

FIG. 6A is a plan view schematically showing the amount of protrusion of the first locking portion 31 and the second locking portion 32 from the outer peripheral surface 10c of the adapter 10.

The fixing part 35 fixes the lighting fixture 100 to the adapter 10 by locking the locked part 122b of the holder 120 of the lighting fixture 100, as shown in FIG. 6A. In this case, each of the first locking portion 31 and the second locking portion 32 is in a first state in which it protrudes by a first amount A1 from the outer peripheral surface 10c of the adapter 10 when the lighting fixture 100 is fixed to the adapter 10. becomes. Here, the first state means a normally attached state in which the adapter 10 is inserted and fixed in the holder 120 of the lighting fixture 100. A normally installed state is a state in which the movement of the lighting equipment 100 is restricted even if the lighting equipment 100 is moved in the Z-axis direction (the state in which the first contact surface 35a of the fixed part 35 and the locked part 122b are The third terminal 53 and the fourth terminal 54 are connected to the connector part 70.

As shown in FIGS. 3 to 5, the fixing portion 35 is an arc-shaped portion that protrudes from the outer circumferential surface 10c of the main body portion 21 along the outer circumferential surface 10c of the main body portion 21. As shown in FIGS. The fixing portion 35 is a part of the protruding portion of the locking body 33. Further, the end surface of the fixing portion 35 in the protruding direction constitutes a part of the outer circumferential surface 10c of the adapter 10, and may be referred to as the outer circumferential surface 37 of the fixing portion 35 or the outer circumferential surface 37 of the locking body 33.

The fixing portion 35 is formed in a step shape with respect to the surface 10a of the main body portion 21 when the adapter 10 is viewed from the side. A first contact surface 35 a lower than the surface 10 a of the main body portion 21 is formed on the fixing portion 35 . The first contact surface 35a is a surface that comes into contact with the locked portion 122b of the holder 120 when the first locking portion 31 and the second locking portion 32 lock the locked portion 122b of the holder 120 in the first state. It is. Specifically, in the first state, the first contact surface 35a of the fixing portion 35 abuts against the locked portion 122b of the holder 120 while facing the locked portion 122b of the holder 120. Then, the locked portion 122b of the holder 120 is locked.

Further, as shown in FIG. 6A, in the first state, the diameter of a circle S1 including the outer circumferential surface 37 of the fixing part 35 is larger than the diameter of the circle S2 of the outer circumferential surface 10c of the main body part 21.

The temporary fixing part 36 temporarily fixes the lighting fixture 100 to the adapter 10 by engaging with the locked part 122b. In this case, each of the first locking part 31 and the second locking part 32 has a second amount smaller than the first amount A1 from the outer peripheral surface 10c of the adapter 10 when the lighting fixture 100 is temporarily fixed to the adapter 10. A second state is reached in which it protrudes by an amount A2. In the second state, the diameter of the outermost circle S3 of the adapter 10 when the second amount A2 is set is larger than the diameter of the outermost circumference of the adapter 10 when the first amount A1 is set. Here, the second state is a state in which the adapter 10 is inserted into the holder 120 of the lighting fixture 100 and temporarily fixed, and the second contact surface 36a of the temporary fixing part 36 and the contact surface of the locked part 122b 122a1 means a state in which they are in contact with each other. That is, in the second state, the lighting fixture 100 is not fixed as firmly to the adapter 10 as in the first state. For example, in a case where the temporary fixing part 36 engages with the locked part 122b, the lighting fixture 100 is supported by the adapter 10, but if the lighting fixture 100 is pulled down in the negative Z-axis direction in an attempt to move the lighting fixture 100 in the Z-axis direction. In some cases, movement of the lighting fixture 100 may be permitted.

As shown in FIGS. 3 to 5, the temporary fixing portion 36 is an arcuate portion that protrudes from the outer circumferential surface 10c of the main body 21 along the shape of the outer circumferential surface 10c of the main body 21. As shown in FIGS. The temporary fixing portion 36 is a part of the protruding portion of the locking body 33.

When the adapter 10 is viewed from the side, the temporary fixing part 36 is formed in a step shape with respect to the first contact surface 35a of the fixing part 35, and is further radially extended from the side wall part 21a of the main body part 21 than the fixing part 35. Projecting outward in direction. A second abutting surface 36a that is lower than the first abutting surface 35a of the fixing part 35 (on the Z-axis minus direction side) is formed in the temporary fixing part 36. That is, the temporary fixing part 36 and the fixing part 35 form a stepped structure in the protruding portion of the locking body 33.

Further, as shown in FIG. 6A, the diameter of the circle S1 including the outermost peripheral edge of the temporary locking portion 36 of each of the first locking portion 31 and the second locking portion 32 is It is larger than the diameter of the circle S2, and larger than the diameter of the circle S4 including the outer circumferential surface 37 of the fixing part 35 of each of the first locking part 31 and the second locking part 32.

The second contact surface 36a is a surface that comes into contact with the locked portion 122b when the first locking portion 31 and the second locking portion 32 engage with the locked portion 122b in the second state. In other words, the second contact surface 36a is a surface that comes into contact with the locked portion 122b when the lighting fixture 100 is temporarily fixed to the adapter 10. Specifically, in the second state, the temporary fixing portion 36 contacts the locked portion 122b of the holder 120 in a state where it faces the locked portion 122b of the holder 120, so that the temporary fixing portion 36 secures the locked portion 122b of the holder 120. It engages with the locking portion 122b.

FIG. 6B is an enlarged view schematically showing the fixing portion 35 of the second locking portion 32. FIG.

As shown in FIGS. 5 and 6B, the second contact surface 36a extends in a direction away from the outer circumferential surface 10c of the adapter 10 with respect to a virtual plane V that is orthogonal to the attachment/detachment direction of the adapter 10 to and from the hook ceiling 3 in FIG. slope down. In other words, the distance of the inclined surface 21e1 from the virtual plane V increases as the distance from the outer circumferential surface 10c increases. The second abutting surface 36a is an inclined surface of the temporary fixing portion 36 that slopes downward in a direction away from the central axis O of the adapter 10, which is substantially parallel to the Z-axis direction, and is a sloped surface that is curved with respect to the XY plane. Configure. That is, the second contact surface 36a is an example of an inclined surface of the temporary fixing portion 36. The extension surface including the second contact surface 36a is inclined with respect to the first contact surface 35a, and is also inclined with respect to the surface 10a of the main body portion 21.

In the locking body 33, when the adapter 10 is cut along a plane that includes the center axis O of the adapter 10 and is parallel to the attachment/detachment direction of the adapter 10 to the hook ceiling 3, the first locking portion 31 and the second locking portion 32 When locking the locked portion 122b of the holder 120 in the first state, the first contact surface 35a of the fixing portion 35 that comes into contact with the locked portion 122b of the holder 120 and the first contact surface 35a of the adapter 10 against the hook ceiling 3 The first angle θ1 formed by the outer circumferential surface 10c of the adapter 10 parallel to the attachment/detachment direction (Z-axis direction) is the first angle θ1 between the first locking portion 31 and the second locking portion 32 in the second state and the locked portion of the holder 120. 122b, the second contact surface 36a of the temporary fixing portion 36 comes into contact with the locked portion 122b of the holder 120, and the outer circumferential surface 10c of the adapter 10 parallel to the attachment/detachment direction of the adapter 10 to/from the hook ceiling 3. is smaller than the second angle θ2 between the two angles. In other words, the second angle θ2 between the outer circumferential surface 37 of the locking body 33 (or the fixing part 35) and the second contact surface 36a is the same as the second angle θ2 between the first contact surface 35a and the locking body 33 (or the fixing part 35). is larger than the first angle θ1 formed with the outer circumferential surface 37 of. That is, in the locking body 33, when the first locking part 31 and the second locking part 32 lock the locked part 122b of the lighting fixture 100 in the first state, the locking body 33 is fixed to form the first angle θ1. The locking force in the removal direction (Z-axis negative direction) when the first locking portion 31 and the second locking portion 32 lock the locked portion 122b in the first state is The removal direction when the first locking part 31 and the second locking part 32 engage with the locked part 122b in the second state in the temporary locking part 36 which forms a second angle θ2 with the outer peripheral surface 37 of is larger than the locking force of. Therefore, in the second state, it is easier to remove the lighting fixture 100 from the adapter 10 than in the first state.

As shown in FIGS. 3 to 5, the engagement protrusion 34 is formed integrally with the locking body 33 and is provided to extend from the locking body 33. Specifically, the engagement protrusion 34 extends from the edge of the locking body 33 on the opposite side to the protruding portion of the locking body 33 in the direction of the central axis O of the adapter 10 (the radial center of the main body 21). stand out.

An elastic member 40 is attached to the engagement protrusion 34 . By engaging with the end of the elastic member 40, the engagement protrusion 34 is urged radially outward from the side wall portion 21a of the main body portion 21 by the elastic member 40 together with the locking main body 33. The radially outer side is the direction away from the radial center of the main body portion 21 .

[Elastic member 40]
Although the elastic member 40 is a torsion spring in this embodiment, other elastic members 40 may be used. The elastic member 40 urges the first locking portion 31 and the second locking portion 32 toward the outside in the radial direction of the side wall portion 21 a of the main body portion 21 . The elastic member 40 causes the first locking portion 31 and the second locking portion 32 to protrude from the side wall portion 21a (outer peripheral surface 10c) of the main body portion 21 so as to be freely retractable.

In this embodiment, the elastic member 40 moves the first locking part 31 along the negative direction of the Y-axis and moves the second locking part 32 along the positive direction of the Y-axis.

[First terminal 51 and second terminal 52]
The first terminal 51 and the second terminal 52 are removably fixed to the hook ceiling 3 of FIG. 1 which is electrically connected to wiring to which power is supplied. The first terminal 51 and the second terminal 52 are plate-shaped members made of metal, and are a pair of terminals for the lighting fixture 100 to receive power supply from the hook ceiling 3. The first terminal 51 and the second terminal 52 are fixed to the inner bottom part 21b of the main body part 21 by a fixing member such as a screw. Note that in this embodiment, two terminals, the first terminal 51 and the second terminal 52, are illustrated, but the adapter 10 may have three or more terminals.

One end of the first terminal 51 (L-shaped part) is inserted into the power supply port 3a of the hook ceiling 3, and one end of the second terminal 52 is also inserted through the power supply port 3a of the hook ceiling 3. The first terminal 51 and the second terminal 52 are electrically connected to a pair of power supply terminals (not shown) inside the hook ceiling 3. The lighting fixture 100 receives AC power from the hanging ceiling 3, for example, but may also receive DC power.

As shown in FIG. 3, one end of the first terminal 51 and one end of the second terminal 52 are hook blades 51a and 52a that protrude from the surface 10a of the main body 21. The hooking blades 51a and 52a, which are the protruding parts of the first terminal 51 and the second terminal 52, are formed in an L-shape when viewed from the side, and have a claw shape.

Further, as shown in FIGS. 1 and 3, the hook blade 51a of the first terminal 51 is inserted into the power feed port 3a of the hook ceiling 3, and the hook blade 52a of the second terminal 52 is also inserted into the power feed port 3a of the hook ceiling 3. By inserting the adapter 10 into the hook ceiling 3, the adapter 10 is mechanically connected to the hook ceiling 3. Rotate the adapter 10 with the hook blade 51a of the first terminal 51 inserted into the power feed port 3a of the hook ceiling 3 and the hook blade 52a of the second terminal 52 inserted into the power feed port 3a of the hook ceiling 3. When the first terminal 51, the second terminal 52, and the lock part 80 are caught on the hook ceiling 3, the rotation is prevented.

As shown in FIGS. 3 and 5 , the other end of the first terminal 51 is electrically and mechanically connected to one end of the third terminal 53 and housed in the main body 21 . Further, the other end of the second terminal 52 is electrically and mechanically connected to one end of the fourth terminal 54 and housed in the main body 21 .

[Third terminal 53 and fourth terminal 54]
The third terminal 53 and the fourth terminal 54 are plate-shaped members made of metal, and are a pair of terminals for the lighting fixture 100 to receive power supply from the hook ceiling 3 of FIG. One end of the third terminal 53 is electrically and mechanically connected to the other end of the first terminal 51. Further, one end of the fourth terminal 54 is electrically and mechanically connected to the other end of the second terminal 52. The first terminal 51 is fixed to the inner bottom part 21b of the main body part 21 by a fixing member such as a screw, so that the third terminal 53 is pressed and fixed to the inner bottom part 21b. Further, the second terminal 52 is fixed to the inner bottom portion 21b of the main body portion 21 by a fixing member such as a screw, so that the fourth terminal 54 is pressed and fixed to the inner bottom portion 21b.

In this embodiment, one end of the third terminal 53 and one end of the fourth terminal 54 are bifurcated terminals, and sandwich the other end of the first terminal 51 and the other end of the second terminal 52. .

The other end 53a of the third terminal 53 is arranged within the first insertion opening 22a. Further, the other end portion 54a of the fourth terminal 54 is disposed within the second insertion opening portion 22b. The other end 53a of the third terminal 53 is a bifurcated terminal that extends in the Z-axis direction so as to be electrically connected to the first power supply terminal 123a, and sandwiches the first power supply terminal 123a. Further, the other end 54a of the fourth terminal 54 is a forked terminal extending in the Z-axis direction so as to be electrically connected to the second power supply terminal 123b, and sandwiching the second power supply terminal 123b. The other end 53a of the third terminal 53 and the other end 54a of the fourth terminal 54 accept insertion of the first power supply terminal 123a and the second power supply terminal 123b in the Z-axis positive direction.

Note that the first terminal 51 and the third terminal 53 may be an integrated member, and the second terminal 52 and the fourth terminal 54 may be an integrated member.

[Connector part 70]
The connector part 70 is provided on the back surface 10b of the adapter 10 on the side opposite to the surface 10a on which the first terminal 51 and the second terminal 52 are provided, and connects the hook in FIG. It is electrically connected to the ceiling 3 and supplies power to the lighting fixture 100.

Specifically, the connector portion 70 is connected to the other end of the third terminal 53 arranged in the Z-axis positive direction from the first insertion opening portion 22a so as to be electrically connected to the first power feeding terminal 123a of the holder 120. 53a, the other end 54a of the fourth terminal 54 disposed on the Z-axis positive direction side from the second insertion opening 22b so as to be electrically connected to the second power supply terminal 123b of the holder 120, and the first It is composed of an insertion opening portion 22a and a second insertion opening portion 22b. More specifically, the connector section 70 includes a first power feeding section 70a and a second power feeding section 70b. The first power feeding section 70a includes a first insertion port 22a formed in the center portion of the cover 22, and a first power feeding terminal 123a of the holder 120 inserted into the first insertion port 22a. and the other end 53a of the three terminals 53. The second power supply part 70b includes a second power supply terminal 123b formed in the center portion of the cover 22, and a fourth power supply terminal 123b electrically connected to the second power supply terminal 123b of the holder 120 inserted into the second insertion opening part 22b. It is constituted by the other end portion 54a of the terminal 54. The first power feeding section 70a and the second power feeding section 70b have shapes corresponding to the first power feeding terminal 123a and the second power feeding terminal 123b.

Further, the connector section 70 is detachably provided to the first power supply terminal 123a and the second power supply terminal 123b, which are the connected section 123 of the lighting fixture 100. The connector portion 70 is electrically connected to the connected portion 123 of the lighting fixture 100 in the first state, and is electrically disconnected from the connected portion 123 of the lighting fixture 100 in the second state. Here, the connected portion 123 includes a first power supply terminal 123a and a second power supply terminal 123b.

[Lock part 80]
The lock portion 80 is a member for regulating the movement of the adapter 10 relative to the hook ceiling 3 in order to maintain the first state in which the adapter 10 is fixed to the hook ceiling 3 in FIG. The lock portion 80 is formed of a resin material.

The lock portion 80 includes an extending portion 81, a coil spring (not shown), a spring hole (not shown) into which the coil spring is inserted, and a guide portion 82.

The extending portion 81 protrudes from an opening provided in the surface 10a of the main body portion 21, and is inserted into the power feeding port 3a provided in the hook ceiling 3, thereby restricting movement of the adapter 10 with respect to the hook ceiling 3.

One end of the coil spring contacts the bottom 21b in the spring hole, and the other end contacts the inner surface of the cover 22, thereby biasing the lock portion 80 in the positive direction of the Z-axis.

The guide portion 82 is a groove portion that slidably guides a pin 91 of a lock release button 90, which will be described later. The guide portion 82 forms a groove that is inclined in the direction in which the lock release button 90 is pushed, which is the direction in which the pin 91 moves.

As shown in FIGS. 1 and 3, for example, when the adapter 10 is rotated and the position of the extension part 81 overlaps with the power supply port 3a of the hook ceiling 3, the extension part 81 can be attached to the coil. Due to the biasing force of the spring, it further protrudes from the opening provided on the surface 10a of the main body portion 21 and is inserted into the power feeding port 3a of the hook ceiling 3. As a result, the rotation of the adapter 10 relative to the hook ceiling 3 is restricted, and the rotation of the adapter 10 relative to the hook ceiling 3 is locked.

[Lock release button 90]
The lock release button 90 is a button that is pressed in order to pull out the extension part 81 from the power supply port 3a of the hook ceiling 3, and is a button provided on the side wall part 21a of the main body part 21. The lock release button 90 is a resin member whose part is exposed to the outside from the main body 21 through a notch 21f provided in the side wall 21a of the main body 21.

A pin 91 that slides with respect to the lock portion 80 is formed on the lock release button 90 . The pin 91 is slidably moved along the guide section 82 when the lock release button 90 is pushed inside the main body section 21 and engages with the guide section 82 of the lock section 80 .

For example, when the pin 91 moves in the direction in which the lock release button 90 is pushed in, it pushes the inner wall of the guide portion 82 in the negative direction of the Z-axis, thereby moving the locking portion 80 in the negative direction of the Z-axis. As a result, the extending portion 81 is pulled out from the power feeding port 3a of the hook ceiling 3 against the biasing force of the coil spring. As a result, the restriction on the rotation of the adapter 10 with respect to the hook ceiling 3 is released. It becomes possible to rotate the adapter 10 with respect to the hook ceiling 3 while pressing the lock release button 90, and the adapter 10 can be removed from the hook ceiling 3.

<Lighting equipment 100>
As shown in FIGS. 2 and 4, the lighting fixture 100 includes a fixture main body 110 that accommodates a light source 130, a holder 120 to which the adapter 10 is detachably attached, a light source 130, a diffusion cover 140, and a power supply unit 150. has. In the present embodiment, the lighting fixture 100 is a cylindrical fixture with a bottom that is circular in plan view and flat in the Z-axis direction.

[Instrument body 110]
The device main body 110 is made of, for example, metal whose main components are aluminum or iron, or resin, and constitutes a housing body that houses the holder 120, the light source 130, the power supply section 150, and the like. The appliance main body 110 functions as a heat sink that radiates heat generated from the light source 130 and the power supply section 150.

The instrument main body 110 also includes a container-shaped housing part 111 that houses the holder 120, a power supply part 150, etc., and has an open edge on the negative side of the Z-axis, and It has a flange-shaped flange portion 112 extending in the radial direction of the central axis O of the lighting fixture 100.

The accommodating portion 111 is a container having a circular shape in a plan view, and an opening 113 for fixing the holder 120 is formed in the center portion. Specifically, the holder 120 that covers the opening 113 of the accommodating portion 111 is fixed with a fixing member such as a screw.

Further, the flange portion 112 has an annular shape extending in the radial direction of the housing portion 111 from the edge of the housing portion 111 on the Z-axis minus direction side. The light source 130 is fixed to the surface of the flange 112 on the Z-axis minus direction side with a fixing member such as a screw. A diffusion cover 140 is fixed to the outer peripheral edge of the collar portion 112 so as to cover the light source 130.

[Holder 120]
The holder 120 is a cylindrical container with a bottom that is flat in the Z-axis direction and accommodates the adapter 10 . The holder 120 has a circular shape in plan view. The holder 120 is made of, for example, an insulating resin material.

The holder 120 includes a cylindrical outer peripheral wall 121 in which an insertion port 122a is formed that opens the end in the Z-axis positive direction, and a bottom part 122 that closes the end of the outer peripheral wall 121 in the Z-axis negative direction. It has a first power supply terminal 123a and a second power supply terminal 123b.

The outer circumferential wall 121 is fixed to the accommodating portion 111 of the instrument body 110 such that the central axis O of the outer circumferential wall 121 substantially coincides with the central axis O of the adapter 10 . Specifically, the outer peripheral wall portion 121 has a flange-shaped fixing piece 121a that protrudes in the outer radial direction from the edge on the Z-axis plus direction side. With the outer circumferential wall 121 inserted into the opening 113 of the accommodating part 111 so that the central axis O of the outer periphery wall 121 substantially coincides with the central axis O of the opening 113 of the accommodating part 111, the fixing piece 121a is , fixed with a fixing member such as a screw.

A third convex portion 125 is formed on the inner circumferential surface of the outer circumferential wall portion 121 .

The third convex portion 125 engages the first locking portion 31 and the second locking portion 32 of the adapter 10 when rotating the holder 120 (lighting device 100) in the circumferential direction around the central axis O with respect to the adapter 10. By coming into contact with this, the amount of protrusion of the first locking part 31 and the second locking part 32 relative to the outer circumferential surface 10c of the adapter 10 is changed.

The third convex portion 125 is a convex structure that exerts a biasing force to move the first locking portion 31 and the second locking portion 32 in the direction of the central axis O of the adapter 10. More specifically, the third convex portion 125 is a convex structure that protrudes from a part of the inner circumferential surface of the outer circumferential wall 121 along the central axis O of the outer circumferential wall 121 . When the holder 120 rotates around the central axis O of the adapter 10, the third convex portion 125 comes into contact with the first locking portion 31 and the second locking portion 32 of the adapter 10, so that the third convex portion 125 is engaged in the first locking. It has a protrusion amount sufficient to move the portion 31 and the second locking portion 32 in the direction of the central axis O of the adapter 10. More specifically, the third convex portion 125 protrudes enough to release the lock between the fixed portion 35 of the first locking portion 31 and the second locking portion 32 and the locked portion 122b. However, it does not have a protrusion amount sufficient to release the engagement between the temporary locking portion 36 of the first locking portion 31 and the second locking portion 32 and the locked portion 122b.

The outer circumferential wall 121 has a locked portion 122b that protrudes from the edge on the Z-axis plus direction toward the inner circumferential side, that is, so as to narrow the opening area of the insertion port 122a of the outer circumferential wall 121.

The locked portion 122b is a locking body in each of the first locking portion 31 and the second locking portion 32 in the first state in which the lighting fixture 100 is fixed to the adapter 10 in a normal state. 33 and comes into contact with the fixed portion 35 . More specifically, in the first state, the contact surface 122b1, which is the surface of the locked portion 122b on the Z-axis negative direction side (the surface facing the fixed portion 35), is the first contact surface of the fixed portion 35. It comes into contact with the surface 35a.

Furthermore, when the lighting fixture 100 is temporarily fixed to the adapter 10 in the second state, the locked portion 122b is connected to the locking body 33 of each of the first locking portion 31 and the second locking portion 32. It comes into contact with the temporary fixing part 36 of. More specifically, in the case of the second state, the abutment surface 122b1, which is the surface of the locked portion 122b on the Z-axis negative direction side (the surface facing the temporary fixing portion 36), is the second state of the temporary fixing portion 36. It contacts or faces the contact surface 36a.

Further, a first convex portion 124 is formed on the surface of the locked portion 122b on the Z-axis positive direction side. The first convex portion 124 engages with the second convex portion 21e of the adapter 10 when the holder 120 (lighting device 100) is rotated in the circumferential direction around the central axis O with respect to the adapter 10. The state of the adapter 10 fixed to the instrument 100 is changed to a temporarily fixed state.

The first convex portion 124 is a convex structure that exerts an urging force to push down the lighting fixture 100 in the negative Z-axis direction via the holder 120 . More specifically, the first convex portion 124 is a generally triangular convex structure when viewed from the front, but is not limited thereto. For example, the second convex portion 21e of the holder 120 that rotates around the central axis O of the adapter 10 may ride on it and apply a biasing force to push down the lighting fixture 100 in the negative direction of the Z-axis via the holder 120. It is only necessary to form an inclined surface that slopes upward in the circumferential direction around the central axis O of the adapter 10.

The bottom portion 122 is a plate-shaped bottom plate substantially parallel to the XY plane, and faces the back surface 10b of the adapter 10. A first power supply terminal 123a and a second power supply terminal 123b are fixed to the center portion of the bottom portion 122.

[First power supply terminal 123a and second power supply terminal 123b]
The first power supply terminal 123a is a columnar terminal, a connection terminal for supplying power supplied from the hook ceiling 3 of FIG. 1 via the adapter 10, and is a male connector portion. The first power supply terminal 123a has a fixing member such as a screw attached to the bottom 122 of the holder 120 so that the center axis O of the first power supply terminal 123a substantially coincides with the center axis O of the adapter 10 and the center axis O of the outer peripheral wall 121. Fixed by

Further, the second power supply terminal 123b is a cylindrical terminal, is a connection terminal for supplying power supplied from the hook ceiling 3 via the adapter 10, and is a male connector portion. The second power supply terminal 123b is formed around (surrounding) the first power supply terminal 123a, and is formed concentrically with respect to the first power supply terminal 123a. The second power supply terminal 123b is attached to the bottom 122 of the holder 120 by a fixing member such as a screw so that the center axis of the second power supply terminal 123b substantially coincides with the center axis O of the adapter 10 and the center axis O of the outer peripheral wall 121. Fixed. Note that the second power supply terminal 123b does not have to be cylindrical because it only needs to surround the first power supply terminal 123a.

That is, when inserting the adapter 10 into the holder 120, the first power supply terminal 123a is inserted into the first insertion port 22a of the cover 22, and the second power supply terminal 123b is inserted into the second insertion port 22a of the cover 22. 22b.

In this embodiment, the first power supply terminal 123a is a cylindrical pin, and the second power supply terminal 123b is an annular (cylindrical) terminal.

[Light source 130]
As shown in FIG. 4, the light source 130 is, for example, a light emitting module that emits light, and is, for example, a light emitting module for illumination that brightens the entire room. The light source 130 is disposed on a mounting surface of the collar portion 112 of the instrument body 110, which is a surface on the negative Z-axis direction, and is fixed to the instrument body 110 so as to irradiate the surrounding area with light.

The light source 130 includes a substrate 131 and a plurality of LED (Light Emitting Diode) modules 132.

The board 131 is a mounting board having a mounting surface on which the LED module 132 is mounted. The substrate 131 is formed into a substantially disk shape. The substrate 131 is fixed to the attachment surface of the flange 112 of the instrument body 110 with a fixing member such as a screw so as to cover the housing of the instrument body 110 when viewed in the Z-axis plus direction. Specifically, the board 131 is fixed to the instrument main body 110 in a position substantially parallel to the XY plane, with the mounting surface facing in the Z-minus direction.

As the substrate 131, for example, a metal base substrate obtained by applying an insulating film to a base material made of a metal material such as aluminum or copper, a ceramic substrate that is a sintered body of a ceramic material such as alumina, or a resin material. A resin substrate or the like is used as a base. Note that the board 131 may be a printed wiring board, a rigid board, or a flexible board.

The plurality of LED modules 132 are arranged on the mounting surface of the board 131. The plurality of LED modules 132 are arranged in a plurality of annular rows by the substrate 131, that is, arranged in concentric circles. In this embodiment, the LED modules 132 are arranged in four rows in the radial direction.

The plurality of LED modules 132 are configured to emit, for example, white light. Specifically, the plurality of LED modules 132 are composed of COB (Chip On Board) type LED elements, and include a plurality of blue LEDs that are bare chips (LED chips) mounted on the substrate 131 and the blue LEDs are sealed. and a sealing member containing a yellow phosphor. Further, the plurality of LED modules 132 may emit light of two or more colors. Specifically, the plurality of LED modules 132 are RGB three-color LED light sources, and emit three monochromatic lights of red light, blue light, and green light, and also dim these three monochromatic lights. Color light or white light obtained by doing this may be emitted.

Further, the plurality of LED modules 132 may be surface mount device (SMD) type LED elements in which LEDs are packaged, and include a container (package) and a plurality of LED chips mounted in the container. and a sealing member that seals the plurality of LED chips. The sealing member is a translucent insulating resin material such as silicone resin. Note that a light diffusing material such as silica, a filler, and the like may be dispersed in the sealing member.

In this embodiment, the plurality of LED modules 132 irradiate light in a direction substantially parallel to the negative Z-axis direction. Specifically, the optical axes of the plurality of LED modules 132 are the main emission direction of light, and are substantially parallel to the Z-axis minus direction.

[Diffusion cover 140]
The diffusion cover 140 is an optical member that covers the light source 130 when viewed in the negative Z-axis direction, and diffuses and emits the light incident from the light source 130 to the outside. Diffusion cover 140 is supported by instrument body 110 at a predetermined distance from light source 130 . Specifically, the diffusion cover 140 has a circular shape when viewed from the Z-axis direction, and is supported by the outer peripheral edge of the flange 112 of the instrument main body 110.

Diffusion cover 140 has translucency. For example, the diffusion cover 140 is made of a translucent material such as acrylic resin. For example, the diffusion cover 140 may include a milky white diffusion panel in which a light diffusion material is dispersed. Furthermore, fine irregularities (textures) may be formed on the surface 10a of the diffusion cover 140 by texturing or the like. Thereby, the light incident on the diffusion cover 140 due to the light emission from the light source 130 is transmitted through the diffusion cover 140 and is scattered. This reduces uneven brightness that appears on the diffusion cover 140 when the diffusion cover 140 is viewed from the negative Z-axis direction.

[Power supply unit 150]
The power supply unit 150 is a power supply module that has a lighting circuit that supplies power for lighting the light source 130. The power supply section 150 rectifies, smooths, and steps down the AC current supplied from an external power source such as a commercial power source via the hook ceiling 3 and the adapter 10, and converts it into DC power at a predetermined level. The power supply unit 150 supplies the converted DC current to the light source 130 via a lead wire or the like. Note that the power supply unit 150 may be combined with a dimming circuit, a booster circuit, and the like.

The power supply unit 150 includes, for example, a printed circuit board on which metal wiring of a predetermined shape is formed, and a plurality of circuit elements mounted on the printed circuit board. The circuit elements are electronic components for causing the light source 130 to emit light, and include, for example, capacitive elements (electrolytic capacitors, ceramic capacitors, etc.), resistive elements (resistors, etc.), rectifier circuit elements, coil elements, and choke coils (choke transformers). , an integrated circuit element (IC), or a semiconductor element (FET, etc.).

The power supply section 150 is accommodated in the housing section 111 of the instrument main body 110 and is arranged between the light source 130 and the holder 120. The power supply section 150 is fixed to the housing section 111 with a fixing member such as a screw.

<Operation>
First, the case where the adapter 10 is attached to the hook ceiling 3 will be explained.

As shown in FIGS. 1 and 4, each power supply port 3a of the hook ceiling 3 is aligned with the first locking part 31 and the second locking part 32 of the adapter 10, and a second lock is attached to each power supply port 3a. The first locking part 31 and the second locking part 32 are inserted, and the adapter 10 is rotated in the circumferential direction of the central axis O of the adapter 10. Thereby, the adapter 10 is electrically and mechanically connected to the hook ceiling 3 and fixed.

Next, a case where the lighting fixture 100 is attached to the adapter 10 will be described.

As shown in FIGS. 2, 4, and 5, the holder 120 of the lighting fixture 100 and the adapter 10 are aligned so that they overlap, and the lighting fixture 100 is inserted so that the adapter 10 is inserted through the insertion opening 122a of the holder 120. Push up. At this time, while the first locking part 31 and the second locking part 32 of the adapter 10 and the locked part 122b of the holder 120 are in contact with each other and sliding, the first locking part 31 and the second locking part 32 moves in the direction of the central axis O of the adapter 10 by being pressed by the locked portion 122b. Thereby, the adapter 10 can be inserted through the insertion opening 122a of the holder 120 of the lighting fixture 100.

When the adapter 10 is inserted into the holder 120 of the lighting fixture 100, the first locking portion 31 and the second locking portion 32 move in the outer radial direction of the adapter 10 due to the biasing force of the elastic member 40. The outer peripheral surface 37 of the fixed part 35 of the first locking part 31 and the outer peripheral surface 37 of the fixed part 35 of the second locking part 32 abut on the inner peripheral surface of the locked part 122b. The second contact surface 36a of the temporary fixing part 36 and the second contact surface 36a of the temporary fixing part 36 of the second locking part 32 contact the locked part 122b. In other words, the locked portion 122b is in the second state where it is temporarily locked to the temporary locking portion 36 of the first locking portion 31 and the temporary locking portion 36 of the second locking portion 32, and the lighting fixture 100 and the adapter 10 are connected to each other. is not electrically connected. That is, the first power supply terminal 123a of the holder 120 is not electrically connected to the other end 53a of the third terminal 53, and the second power supply terminal 123b of the holder 120 is not electrically connected to the other end 54a of the fourth terminal 54. not connected to.

Furthermore, when the adapter 10 is inserted into the holder 120 of the lighting fixture 100, the inner peripheral surface of the locked part 122b, the outer peripheral surface 37 of the fixing part 35 of the first locking part 31, and the second locking part 32 are connected to each other. After the outer peripheral surface 37 of the fixing part 35 slides, the first locking part 31 and the second locking part 32 further move in the outer radial direction of the adapter 10 due to the urging force of the elastic member 40. In other words, when the locked portion 122b separates from the fixed portion 35 of the first locking portion 31 and the fixed portion 35 of the second locking portion 32, the urging force of the elastic member 40 causes the first locking portion 31 and the second locking portion 32 to separate from each other. The locking portion 32 returns to its original position. The first locking portion 31 and the second locking portion 32 are displaced from the positions shown by the two-dot chain line in FIG. 5 to the positions of the first locking portion 31 and the second locking portion 32 shown by the solid line. At this time, the first power supply terminal 123a of the holder 120 is inserted into the first insertion opening 22a and electrically connected to the other end 53a of the third terminal 53. Further, the second power supply terminal 123b of the holder 120 is inserted into the second insertion opening 22b and electrically connected to the other end 54a of the fourth terminal 54.

Due to the gravity of the lighting fixture 100, the Z-axis minus side surface of the locked part 122b of the holder 120, the first contact surface 35a of the fixing part 35 of the first locking part 31, and the second locking part 32 are fixed. The first contact surface 35a of the portion 35 comes into contact with the first contact surface 35a. Thereby, the lighting fixture 100 is fixed to the adapter 10 in a normal state and is firmly held, thereby receiving power supply from the hook ceiling 3.

Next, a case in which the lighting fixture 100 is removed from the adapter 10 will be described.

FIG. 7 is a plan view of the lighting device 1 according to the embodiment as viewed from the hook ceiling 3 side. FIG. 8A is a partially enlarged cross-sectional view showing the relationship between the adapter 10 and the holder 120 along line VIII-VIII in FIG. 7. FIG. FIG. 8B is a partially enlarged sectional view showing a state in which the holder 120 of FIG. 8A is rotated in the direction of the arrow in FIG. 7. FIG. FIG. 9A is a diagram showing a cross-sectional view of the holder 120 and a plan view of the adapter 10 in the relationship between the adapter 10 and the holder 120 in the state of FIG. 8A. FIG. 9B is a diagram showing a cross-sectional view of the holder 120 and a plan view of the adapter 10 in the relationship between the adapter 10 and the holder 120 in the state of FIG. 8B.

As shown in FIGS. 7, 8A, and 8B, when the lighting fixture 100 is rotated in the circumferential direction of the central axis O (in the direction of the arrow in FIG. 7), the first convex portion 124 of the holder 120 and the main body of the adapter 10 The second convex portion 21e of the portion 21 comes into contact with the second convex portion 21e, and the second convex portion 21e pushes down the lighting fixture 100 in the negative direction of the Z-axis while sliding on the first convex portion 124. At this time, as shown in FIGS. 9A and 9B, the third protrusion 125 in the holder 120 comes into contact with the fixing part 35 of the first locking part 31 and the fixing part 35 of the second locking part 32 and slides. However, by pressing the fixing part 35 of the first locking part 31 and the fixing part 35 of the second locking part 32 by the respective third convex parts 125, the first locking part 31 and the second locking part 32 moves in the direction of the central axis O of the adapter 10.

FIG. 10 is a partially enlarged sectional view showing a second state in which the lighting fixture 100 according to the embodiment is temporarily fixed to the adapter 10.

As a result, as shown in FIG. Since the locked part 122b separates from the contact surface 122b1 (the first state is canceled) and the lighting fixture 100 moves in the negative Z-axis direction, the locked part 122b becomes the temporarily fixed part of the first locking part 31. 36 and the second contact surface 36a of the temporary fixing part 36 of the second locking part 32. The first locking portion 31 and the second locking portion 32 are displaced from the positions indicated by the two-dot chain line in FIG. 10 to the positions of the first locking portion 31 and the second locking portion 32 shown by the solid line. At this time, the first power supply terminal 123a of the holder 120 separates from the other end 53a of the third terminal 53, and is electrically disconnected. Further, the second power supply terminal 123b of the holder 120 is separated from the other end 54a of the fourth terminal 54, and is electrically disconnected. In this way, the lighting fixture 100 is held by the adapter 10 in the second state where it is temporarily fixed by the temporary fixing part 36 of the first fixing part 31 and the temporary fixing part 36 of the second fixing part 32.

Then, when the lighting fixture 100 is pushed down in the negative direction of the Z-axis, the locked part 122b contacts the second contact surface 36a of the temporary locking part 36 of the first locking part 31 and the temporary locking part of the second locking part 32. The first locking part 31 and the second locking part 32 move in the direction of the central axis O of the adapter 10 by being pressed by the locked part 122b while sliding in contact with the second contact surface 36a of the adapter 10. do. Thereby, the lighting fixture 100 can be removed from the adapter 10.

<Effect>
Next, the effects of the adapter 10, lighting device 1, and lighting fixture 100 in this embodiment will be described.

As described above, the adapter 10 in this embodiment is an adapter 10 for electrically and mechanically connecting the hook ceiling 3 and the lighting fixture 100, and is detachable from the hook ceiling 3 to which electric power is supplied. A plurality of hook blades 51a, 52a are fixed to a plurality of hook blades 51a, 52a, and a plurality of hook blades 51a, 52a are provided on the back surface 10b of the adapter 10 on the opposite side to the surface 10a on which the plurality of hook blades 51a, 52a are provided, and are electrically connected to the plurality of hook blades 51a, 52a. , and a connector section 70 that supplies power to the lighting fixture 100. The connector section 70 includes a first power feeding section 70a electrically connected to a first power feeding terminal 123a provided on the lighting fixture 100, and a second power feeding section 70a provided so as to surround the first power feeding terminal 123a provided on the lighting fixture 100. It has a second power supply section 70b that is electrically connected to the power supply terminal 123b.

According to this, by aligning the connector part 70 of the lighting fixture 100 and the adapter 10 so that they overlap and pushing up the lighting fixture 100, the connector part 70 of the lighting fixture 100 and the adapter 10 are electrically and mechanically connected. Can be connected. That is, it is no longer necessary to disassemble the lighting fixture 100 and electrically connect the wiring of the lighting fixture 100 and the adapter 10, as in the past.

Therefore, with this adapter 10, the lighting equipment 100 and the adapter 10 can be easily connected by eliminating the wiring of the lighting equipment 100.

In particular, with this adapter 10, the wiring of a conventional lighting fixture can be eliminated, so that the number of parts of the lighting fixture 100 of this embodiment can be reduced. As a result, it is possible to suppress an increase in the manufacturing cost of the lighting fixture 100.

Further, in the lighting fixture 100 according to the present embodiment, the lighting fixture 100 is electrically connected to the hook ceiling 3 via the adapter 10, and is a holder fixed to the lighting fixture 100, and the adapter 10 is detachable. A first power supply terminal 123a is provided on a holder that can be attached freely and is connected to the first power supply part 70a of the adapter 10, and a first power supply terminal 123a is provided so as to surround the first power supply terminal 123a and is connected to the second power supply part 70b of the adapter 10. and a second power supply terminal 123b.

This lighting fixture 100 also provides the same effects as described above.

Further, in the adapter 10 according to the present embodiment, the first power feeding terminal 123a and the second power feeding terminal 123b of the lighting fixture 100 are convex terminals extending in the attachment/detachment direction, and the first power feeding portion 70a and the second power feeding terminal 123b of the adapter 10 are convex terminals extending in the attachment/detachment direction. The second power feeding portion 70b is a concave power feeding portion into which the first power feeding terminal 123a and the second power feeding terminal 123b are inserted, or the first power feeding terminal 123a and the second power feeding terminal 123b of the lighting fixture 100 are a concave shape extending in the attachment/detachment direction. The first power feeding part 70a and the second power feeding part 70b of the adapter 10 are convex power feeding parts inserted into the first power feeding terminal 123a and the second power feeding terminal 123b.

According to this, by simply pushing the lighting fixture 100 into the adapter 10, the electrical and mechanical connection between the lighting fixture 100 and the adapter 10 can be reliably established.

Furthermore, in the adapter 10 according to the present embodiment, the second power feeding section 70b is arranged concentrically with the first power feeding section 70a as the center.

According to this, the lighting fixture 100 can be rotated with respect to the adapter 10. For this reason, even if a force for rotating the lighting fixture 100 is applied, excessive torque is difficult to be applied to the lighting fixture 100, so damage to the parts that constitute the lighting fixture 100 can be suppressed.

Further, the adapter 10 in this embodiment is an adapter 10 for electrically and mechanically connecting the ceiling hook 3 and the lighting fixture 100, and is an adapter 10 that is electrically connected to wiring to which power is supplied. A plurality of hook blades 51a and 52a are detachably fixed to the ceiling 3, and a plurality of hook blades 51a are provided on the back surface 10b of the adapter 10 opposite to the surface 10a on which the plurality of hook blades 51a and 52a are provided. , 52a and supplies power to the lighting fixture 100; a first locking part 31 that fixes the lighting fixture 100 to the adapter 10 by protruding from the outer circumferential surface 10c of the adapter 10 so as to move forward and backward; A second locking portion 32 is provided. Further, each of the first locking part 31 and the second locking part 32 is a fixing part 35 that fixes the lighting fixture 100 to the adapter 10 by locking the locked part 122b of the lighting fixture 100, and a fixed part 35 that fixes the lighting fixture 100 to the adapter 10. It has a temporary fixing part 36 that temporarily fixes the lighting fixture 100 to the adapter 10 by engaging with the locking part 122b. Further, the temporary fixing part 36 has a contact surface 122b1 that comes into contact with the locked part 122b when the lighting fixture 100 is temporarily fixed to the adapter 10. The abutment surface 122b1 is a second abutment surface 36a that slopes downward in a direction away from the outer circumferential surface 10c of the adapter 10 with respect to a virtual plane V that is orthogonal to the attachment/detachment direction of the adapter 10 to and from the hook ceiling 3.

According to this, when removing the lighting fixture 100 from the hook ceiling 3, for example, by rotating the lighting fixture 100, the respective fixing parts 35 of the first locking part 31 and the second locking part 32 are connected to the locked part. The lock with the portion 122b is released. When the locking is released, the lighting fixture 100 moves vertically downward with respect to the adapter 10 due to its own weight, but since the locked part 122b and the temporary fixing part 36 engage, the lighting fixture 100 moves vertically downward with respect to the adapter 10. 10 and prevents the lighting fixture 100 from falling.

Therefore, according to this adapter 10, even if the lighting device 1 is moved unexpectedly, it is possible to prevent the lighting device 1 from falling.

In particular, since the contact surface of the temporary fixing part 36 is the second contact surface 36a, even if the locked part 122b and the temporary fixing part 36 engage, if the lighting fixture 100 is pushed down, the first contact surface 36a The movement of the locking portion 31 and the second locking portion 32 releases the engagement between the locked portion 122b and the temporary locking portion 36. Therefore, the lighting fixture 100 can be removed reliably and safely.

Furthermore, the lighting device 1 in this embodiment includes an adapter 10 and a lighting fixture 100 that is electrically connected to the adapter 10.

This lighting fixture 100 also provides the same effects as described above.

The adapter 10 according to the present embodiment also includes a first locking portion 31 and a second locking portion 32 that protrude from the outer circumferential surface 10c of the adapter 10 so as to be able to move forward and backward, thereby fixing the lighting fixture 100 to the adapter 10. , each of the first locking portion 31 and the second locking portion 32 is in a first state in which it protrudes by a first amount A1 from the outer peripheral surface 10c of the adapter 10 when the lighting fixture 100 is fixed to the adapter 10. .

According to this, in the first state, each of the fixing parts 35 of the first locking part 31 and the second locking part 32 is locked to the locked part 122b, so that the lighting fixture 100 is moved in the vertical direction. can be suppressed. Therefore, even if the lighting fixture 100 is moved unexpectedly, the first locking part 31 and the second locking part 32 can reliably fix the lighting fixture 100 to the adapter 10. Thereby, the adapter 10 can further suppress the lighting device 1 from falling.

Further, in the adapter 10 according to the present embodiment, each of the first locking portion 31 and the second locking portion 32 is a portion of the first locking portion 31 and the second locking portion 32 from the outer circumferential surface 10c of the adapter 10 when the lighting fixture 100 is temporarily secured to the adapter 10. A second state is reached in which a second amount A2, which is smaller than the first amount A1, protrudes.

According to this, even if the first state is released, the first state transitions to the second state, so that the temporary fastening parts 36 of the first locking part 31 and the second locking part 32 hold the lighting fixture 100 to the adapter. 10 in a predetermined posture. Thereby, the adapter 10 can further suppress the lighting device 1 from falling.

Furthermore, in the adapter 10 according to the present embodiment, when the adapter 10 is cut along a plane that includes the center axis O of the adapter 10 and is parallel to the attachment/detachment direction of the adapter 10 with respect to the hook ceiling 3, the first locking portion 31 and the first locking portion 31 When the second locking part 32 locks the locked part 122b of the lighting fixture 100 in the first state, the first locking part 31 and the second locking part 32 that come into contact with the locked part 122b The first locking portion 31 and the second locking portion 32 are engaged in the first state at the first angle θ1 formed by the contact surface 35a and the outer circumferential surface 10c parallel to the attachment/detachment direction of the adapter 10 to the hook ceiling 3. The locking force in the removal direction when locking the locking portion 122b is applied when the first locking portion 31 and the second locking portion 32 engage with the locked portion 122b in the second state. At the second angle θ2 formed by the second contact surfaces 36a of the first locking portion 31 and the second locking portion 32 that contact the portion 122b and the outer circumferential surface 10c parallel to the attachment/detachment direction of the adapter 10 to the hook ceiling 3. , is larger than the locking force in the removal direction when the first locking portion 31 and the second locking portion 32 engage with the locked portion 122b in the second state.

According to this, it is easier to remove the lighting fixture 100 from the adapter 10 in the second state than in the first state. Therefore, in the first state, vertical movement of the lighting fixture 100 with respect to the adapter 10 is suppressed, so that the lighting fixture 100 can be reliably fixed to the adapter 10. Furthermore, in the second state, it is easier to remove the lighting fixture 100 from the adapter 10 than in the first state.

Furthermore, in the adapter 10 according to the present embodiment, the connector portion 70 is detachably provided to the connector portion 123 of the lighting fixture 100, and is electrically connected to the connector portion 123 of the lighting device 100 in the first state. and is electrically disconnected from the connected portion 123 of the lighting fixture 100 in the second state.

According to this, since power is supplied to the lighting fixture 100 in the first state, lighting the lighting fixture 100 ensures electrical and mechanical connection between the lighting fixture 100 and the adapter 10. The user can recognize that the correction has been made. In addition, in the second state, power is not supplied to the lighting fixture 100, so the lighting fixture 100 does not light up, and the electrical connection and mechanical connection between the lighting fixture 100 and the adapter 10 are incomplete. The user can recognize that. In this case, the user attaches the lighting fixture 100 to the adapter 10 so as to securely fix the lighting fixture 100 to the adapter 10. As a result, with this adapter 10, falling of the lighting fixture 100 is easily suppressed.

Further, the adapter 10 in this embodiment includes a housing 20 in which a plurality of hooking blades 51a, 52a, a connector portion 70, a first locking portion 31, and a second locking portion 32 are provided. The housing 20 also has a second convex portion 21e that releases the first state in which the lighting device 100 is protruded by the first amount when the lighting device 100 is fixed to the adapter 10 by rotating the lighting device 100 in a predetermined direction. is formed.

For example, when removing the lighting fixture 100 from the adapter 10, the user may continue to turn the lighting fixture 100 without knowing how to remove it.

However, according to the present embodiment, by rotating the lighting fixture 100 in a predetermined direction, the second convex portion 21e of the adapter 10 and the first convex portion 124 of the lighting fixture 100 come into contact with each other and slide. , the rotational force of the lighting fixture 100 becomes a vertical downward biasing force. Thereby, the user can recognize that the lighting fixture 100 has moved vertically downward. As a result, with this adapter 10, the lighting fixture 100 can be removed safely and easily.

Furthermore, in the adapter 10 according to the present embodiment, when the first state in which the lighting fixture 100 is fixed to the adapter 10 is released, the second convex portion 21e is connected to the first convex portion 124 formed on the lighting fixture 100. By engaging, the lighting fixture 100 is temporarily fixed to the adapter 10 by transitioning the first state in which the lighting fixture 100 is fixed to the adapter 10 to the second state in which it is temporarily fixed.

According to this, the lighting fixture 100 can be transitioned from the first state to the second state. Thereby, it is possible to reliably prevent the lighting fixture 100 from falling.

Further, in the lighting device 1 according to the present embodiment, the holder 120 is provided with the lighting device by rotating the lighting device 100 in a predetermined direction and engaging with the second convex portion 21e formed on the adapter 10. A first convex portion 124 is formed that changes the state of the adapter 10 fixed to the adapter 100 to a temporarily fixed state.

This lighting device 1 also provides the same effects as described above.

In the lighting device 1 according to the present embodiment, the lighting fixture 100 includes a light source 130, a fixture body 110 that houses the light source 130, and a holder 120 to which the adapter 10 is detachably attached. The holder 120 is provided with a first lock against the outer circumferential surface 10c of the adapter 10 by contacting each of the first locking part 31 and the second locking part 32 when the lighting fixture 100 is rotated in a predetermined direction. A third convex portion 125 is formed that changes the amount of protrusion of the locking portion 31 and the second locking portion 32.

According to this, by rotating the lighting fixture 100 in a predetermined direction, the first locking part 31 and the second locking part 32 are pushed by the third convex part 125, and the first locking part 31 and the second locking part 32 are pushed by the third convex part 125. The locking portion 32 moves inside the adapter 10. As a result, the lighting fixture 100 and the adapter 10 are released from the first state and transition to the second state. As a result, with this adapter 10, the lighting fixture 100 can be removed safely and easily.

(Modified example of embodiment)
The configurations of the adapter 10, lighting device 1, and lighting fixture 100 of this modification will be described.

FIG. 11A is a partially enlarged sectional view showing a first state in which the lighting fixture 100 according to a modification of the embodiment is normally fixed to the adapter 10. FIG. 11B is a partially enlarged sectional view showing a first state in which the lighting fixture 100 according to a modification of the embodiment is normally fixed to the adapter 10.

This modification differs from the embodiment in that the holder 120a of the lighting fixture 100 is provided with two locked parts.

Unless otherwise specified, other configurations in this modification are the same as those in the embodiment, and the same configurations are denoted by the same reference numerals and detailed explanations regarding the configurations will be omitted.

The outer peripheral wall portion 121 of the holder 120a has a first locked portion 222a and a second locked portion 222b.

The first locked portion 222a is a locking portion of each of the first locking portion 31 and the second locking portion 32 when the lighting fixture 100 is in a first state fixed to the adapter 10 in a normal state. It comes into contact with the fixing part 35 of the stopper body 33. More specifically, in the first state, the fourth contact surface 222a1, which is the surface of the first locked portion 222a on the Z-axis negative direction side (the surface facing the fixed portion 35), is in contact with the fixed portion 35. It comes into contact with the first contact surface 35a.

The first locked portion 222a is an annular convex portion formed on the negative side of the Z axis than the second locked portion 222b, and extends from the inner peripheral surface of the outer peripheral wall 121 to the inner diameter of the outer peripheral wall 121. It is stretched out to narrow it. The first locked portion 222a is formed on the inner circumferential surface of the outer peripheral wall portion 121, and is located between the second locked portion 222b and the bottom portion 122 of the holder 120a.

The second locked portion 222b is the locking body 33 of each of the first locking portion 31 and the second locking portion 32 when the lighting fixture 100 is in the second state temporarily fixed to the adapter 10. It comes into contact with the temporary fixing part 36 of. More specifically, in the case of the second state, the third contact surface 222b1, which is the surface of the second locked portion 222b on the Z-axis negative direction side (the surface facing the temporary locking portion 36), is connected to the temporary locking portion. 36, the second contact surface 36a contacts or faces the second contact surface 36a.

The second locked portion 222b is an annular convex portion formed on the edge of the outer circumferential wall portion 121 of the holder 120a on the Z-axis plus direction side, and extends from the inner circumferential surface of the outer circumferential wall portion 121 to the outer circumferential wall portion 121. It overhangs to narrow the inner diameter. The second locked portion 222b has approximately the same diameter as the first locked portion 222a when the holder 120a is viewed from above, but may have a larger diameter than the first locked portion 222a. The diameter may be smaller than that of the locked portion 222a.

As described above, the lighting fixture 100 in this modified example is a lighting fixture 100 that is electrically connected to the hook ceiling 3 via the adapter 10, and includes a light source 130, a fixture body 110 that accommodates the light source 130, and a fixture body 110 that accommodates the light source 130. A holder 120a is fixed to the main body 110 and to which the adapter 10 is detachably attached. In addition, a locked portion 122b is formed on the holder 120a and protrudes toward the adapter 10 to fix the lighting fixture 100 to the adapter 10. Further, the locked portion 122b includes a first locked portion 222a that fixes the lighting fixture 100 to the adapter 10 by being locked to the fixing portion 35 formed on the outer peripheral surface 10c of the adapter 10, and a first locked portion 222a that fixes the lighting fixture 100 to the adapter 10. The lighting fixture 100 has a second locked portion 222b that is temporarily secured to the adapter 10 by engaging with the temporary securing portion 36 formed on the outer peripheral surface of the second locked portion 222b. Further, the second locked portion 222b has a third contact surface 222b1 that comes into contact with the temporary fixing portion 36 when the lighting fixture 100 is temporarily fixed to the adapter 10.

This modification also provides the same effects as the embodiment.

(Other variations, etc.)
Although the embodiment and the modification of the embodiment have been described above, the present disclosure is not limited to the embodiment and the modification of the embodiment.

For example, the lighting devices and lighting fixtures described in the above embodiments and modifications of the embodiments are merely examples, and specific aspects of the lighting devices and lighting fixtures are not particularly limited. The lighting device and the lighting fixture may be in any manner as long as they are connected to the ceiling hook body using an adapter.

Furthermore, in the adapter, lighting device, and lighting fixture described in the embodiment and the modification of the embodiment, the plurality of locking portions may be one integrated member.

Further, in the adapter, lighting device, and lighting fixture described in the embodiment and the modification of the embodiment, the connector portion of the adapter is concave, but may be convex. That is, the other end portion of the third terminal and the other end portion of the fourth terminal of the connector portion may be configured to protrude from the first insertion opening portion and the second insertion opening portion. In this case, the first power supply terminal and the second power supply terminal may be recessed from the bottom of the holder. That is, the connector part of the adapter may be a male connector part, and the power supply part of the socket may be a female connector part. That is, in the adapter 10, the first power supply terminal and the second power supply terminal of the lighting fixture are convex terminals extending in the attachment/detachment direction, and the first power supply part and the second power supply part of the adapter are the first power supply terminal and the second power supply terminal. The second power supply terminal is inserted into the concave power supply part, and the first power supply terminal and second power supply terminal of the lighting fixture are concave terminals extending in the attachment/detachment direction, and the first power supply part and the second power supply terminal of the adapter The portion may be a convex power feeding portion inserted into the first power feeding terminal and the second power feeding terminal.

Further, there are no particular limitations on the specific form of the hook ceiling body. As the hook ceiling body, a round full hook ceiling, a full hook rosette, a round hook ceiling, a square hook ceiling, a hook embedded rosette, a hook exposed rosette, etc. are used.

In addition, forms obtained by applying various modifications to the embodiments and modifications of the embodiments that those skilled in the art can think of, and components in the embodiments and modifications of the embodiments without departing from the spirit of the present disclosure. The present disclosure also includes forms realized by arbitrarily combining functions.

1 Lighting device 3 Hook ceiling 10 Adapter 10a Front surface 10b Back surface 10c Outer surface 20 Housing 21e Second convex portion 31 First locking portion (locking portion)
32 Second locking part (locking part)
51a, 52a Hook blade 70 Connector portion 70a First power feeding portion 70b Second power feeding portion 100 Lighting fixture 110 Device bodies 120, 120a Holder 122b Locked portion 122b1 Contact surface 123 Connected portion 123a First power feeding terminal 123b Second power feeding Terminal 124 First convex portion 125 Third convex portion 130 Light source

Claims (11)

An adapter for electrically and mechanically connecting a hanging ceiling and a lighting fixture,
a plurality of hook blades detachably fixed to the hook ceiling to which power is supplied;
a connector portion provided on the back surface of the adapter opposite to the surface on which the plurality of hooking blades are provided, and being electrically connected to the plurality of hooking blades and supplying power to the lighting device;
one or more locking portions that protrude from the outer circumferential surface of the adapter so as to be movable forward and backward, thereby fixing the lighting fixture to the adapter;
The connector part is
a first power feeding section electrically connected to a first power feeding terminal provided on the lighting fixture;
a second power feeding part electrically connected to a second power feeding terminal provided to surround the first power feeding terminal provided in the lighting fixture ;
Each of the one or more locking portions is in a first state in which it protrudes by a first amount from the outer peripheral surface of the adapter when the lighting fixture is fixed to the adapter.
adapter. The first power supply terminal and the second power supply terminal of the lighting fixture are convex terminals extending in the attachment/detachment direction, and the first power supply part and the second power supply part of the adapter are connected to the first power supply terminal and the second power supply terminal. a concave power supply portion into which the second power supply terminal is inserted, or
The first power supply terminal and the second power supply terminal of the lighting fixture are concave terminals extending in the attachment/detachment direction, and the first power supply part and the second power supply part of the adapter are connected to the first power supply terminal and the second power supply terminal. The adapter according to claim 1, which is a convex power feeding portion inserted into the second power feeding terminal. The adapter according to claim 1 or 2, wherein the second power feeding section is arranged concentrically with the first power feeding section as the center. Each of the one or more locking portions is in a second state in which each of the one or more locking portions protrudes from the outer peripheral surface of the adapter by a second amount smaller than the first amount when the lighting fixture is temporarily secured to the adapter. The adapter according to any one of items 1 to 3 . When the adapter is cut along a plane that includes the central axis of the adapter and is parallel to the attachment/detachment direction of the adapter with respect to the hook ceiling, the one or more locking portions are in the first state and the lighting fixture is locked. When locking the part, the first contact surface of each of the one or more locking parts that comes into contact with the locked part and the outer circumferential surface parallel to the attachment/detachment direction of the adapter with respect to the hook ceiling The locking force in the removal direction when the one or more locking portions lock the locked portion in the first state at the first angle formed is the locking force in the removal direction when the one or more locking portions lock the locked portion in the second state. When engaging with the locked part, the second contact surface of each of the one or more locking parts that comes into contact with the locked part and the second contact surface of each of the one or more locking parts that is parallel to the attachment/detachment direction of the adapter with respect to the hook ceiling. 5 . The locking force in the removal direction at the second angle formed by the outer circumferential surface is greater than the locking force in the removal direction when the one or more locking portions engage with the locked portion in the second state. adapter. The connector part is
provided in a detachable manner with respect to a connected portion of the lighting fixture;
in the first state, electrically connected to a connected portion of the lighting fixture;
The adapter according to claim 4 , wherein in the second state, the adapter is electrically disconnected from the connector portion of the lighting fixture. comprising a casing in which the plurality of hooking blades, the connector portion, and the one or more locking portions are provided,
The housing includes a second convex portion that releases the first state in which the lighting device is fixed to the adapter and protrudes by the first amount by rotating the lighting device in a predetermined direction. The adapter according to any one of claims 4 to 6 , formed by: When the first state in which the lighting fixture is fixed to the adapter is released, the second convex portion engages with the first convex portion formed on the lighting fixture, so that the lighting fixture is fixed to the adapter. The adapter according to claim 7 , wherein the lighting fixture is temporarily fixed to the adapter by transitioning the first state fixed to the adapter to the second state temporarily fixed. adapter and
comprising a lighting fixture electrically connected to the adapter,
The adapter is
An adapter for electrically and mechanically connecting a hanging ceiling and a lighting fixture,
a plurality of hook blades detachably fixed to the hook ceiling to which power is supplied;
a connector portion provided on the back surface of the adapter opposite to the surface on which the plurality of hooking blades are provided, the connector portion being electrically connected to the plurality of hooking blades and supplying power to the lighting device;
The connector part is
a first power feeding section electrically connected to a first power feeding terminal provided on the lighting fixture;
a second power feeding part electrically connected to a second power feeding terminal provided to surround the first power feeding terminal provided in the lighting fixture;
The lighting equipment includes:
a light source and
a fixture body that houses the light source;
a holder to which the adapter is detachably attached;
The holder includes a device that changes the protrusion amount of the one or more locking portions relative to the outer peripheral surface of the adapter by contacting each of the one or more locking portions when the lighting fixture is rotated in a predetermined direction. A lighting device in which a third convex portion is formed. The holder is configured to rotate the lighting device in a predetermined direction and engage with a second convex portion formed on the adapter, thereby temporarily changing the state of the adapter fixed to the lighting device. The illumination device according to claim 9 , wherein a first convex portion that transitions to the state is formed. A lighting fixture electrically connected to a hook ceiling via an adapter,
a holder fixed to the lighting fixture, a first power supply terminal provided on the holder to which the adapter is detachably attached, and connected to a first power supply part of the adapter;
a second power supply terminal connected to a second power supply part of the adapter provided so as to surround the first power supply terminal;
The adapter includes one or more locking portions that protrude from the outer circumferential surface of the adapter so as to be movable forward and backward, thereby fixing the lighting fixture to the adapter,
The lighting equipment includes:
a light source and
a fixture body that houses the light source;
a holder to which the adapter is detachably attached;
The holder is configured to reduce the amount of protrusion of the one or more locking portions relative to the outer peripheral surface of the adapter by coming into contact with each of the one or more locking portions when the lighting fixture is rotated in a predetermined direction. A lighting fixture in which a third convex portion is formed.

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