CN112752372A - Adapter, lighting device, and lighting fixture - Google Patents

Abstract

The adapter (10) is provided with: a plurality of engaging blades (51a, 52a) detachably fixed to a ceiling lamp box (3) to which power is supplied; and a connecting unit (70) which is provided on a back surface (10b) of the adapter (10) opposite to the surface (10a) on which the plurality of engaging blades (51a, 52a) are provided, which is electrically connected to the plurality of engaging blades (51a, 52a), and which supplies power to the lighting fixture (100). The connecting part (70) is provided with: a first power supply unit (70a) electrically connected to a first power supply terminal (123a) provided on the lighting fixture (100); and a second power supply unit (70b) electrically connected to a second power supply terminal (123b) provided in the lighting fixture (100) and surrounding the first power supply terminal (123 a).

Description

Adapter, lighting device, and lighting fixture

Technical Field

The invention relates to an adapter, a lighting device and a lighting fixture.

Background

Conventionally, there is known an adapter for electrically and mechanically connecting a lighting fixture to a ceiling lamp box provided in a ceiling.

An adapter for a lighting fixture, which is an example of a conventional adapter, has a connecting portion to be connected to a connector of the lighting fixture for electrically connecting the lighting fixture and the adapter for the lighting fixture. The connection portion is electrically connected to a connector provided at a tip of a wiring of the lighting fixture for electrically connecting the lighting fixture and the lighting fixture adaptor (for example, see patent document 1).

Documents of the prior art

Patent document

Patent document 1: japanese laid-open patent publication No. 2015-76390

Disclosure of Invention

Problems to be solved by the invention

However, in the adapter of patent document 1, when the lighting fixture is electrically and mechanically connected to the ceiling lamp house, the adapter is electrically and mechanically connected to the ceiling lamp house, and then the housing of the lighting fixture is detached or the like, and the connector provided at the tip of the wiring of the lighting fixture is electrically connected to the adapter. Therefore, it is desired to easily connect the lighting apparatus and the adapter by removing the wiring of the lighting apparatus.

Therefore, the present invention provides an adapter, a lighting device, and a lighting fixture, which can easily connect the lighting fixture to the adapter by removing wiring of the lighting fixture.

Means for solving the problems

An adapter according to an aspect of the present invention is an adapter for electrically and mechanically connecting a ceiling lamp box to a lighting fixture, the adapter including: a plurality of engaging blades detachably fixed to the ceiling lamp box to which power is supplied; and a connecting portion provided on a back surface of the adapter opposite to a surface on which the plurality of engaging blades are provided, the connecting portion being electrically connected to the plurality of engaging blades and supplying power to the lighting fixture; the connecting part comprises: a first power supply unit electrically connected to a first power supply terminal provided in the lighting fixture; and a second power supply unit electrically connected to a second power supply terminal provided to surround the first power supply terminal provided to the lighting fixture.

The lighting device according to an aspect of the present invention includes an adapter, and a lighting fixture electrically connected to the adapter.

Further, a lighting fixture according to an aspect of the present invention is electrically connected to a ceiling lamp box via an adapter, and includes: a first power supply terminal provided on a holder fixed to the lighting fixture and to which the adapter is detachably attached, and connected to the first power supply portion of the adapter; and a second power supply terminal provided so as to surround the first power supply terminal and connected to the second power supply portion of the adapter.

Effects of the invention

The adapter and the like of the present invention can easily connect the lighting fixture and the adapter by removing the wiring of the lighting fixture.

Drawings

Fig. 1 is a perspective view of a lighting device and a ceiling rose attached with an adapter to a lighting fixture in an embodiment.

Fig. 2 is an exploded perspective view of the lighting device of the embodiment.

Fig. 3 is an exploded perspective view of the adapter of the embodiment.

Fig. 4 is a cross-sectional view of the lighting device of fig. 1 taken along line IV-IV.

Fig. 5 is a partially enlarged sectional view showing a first state in which the lighting fixture in the embodiment is normally fixed to the adapter.

Fig. 6A is a plan view schematically showing the amount of projection of the first locking portion and the second locking portion from the outer peripheral surface of the adapter.

Fig. 6B is an enlarged view schematically enlarging the fixing portion of the second locking portion.

Fig. 7 is a plan view of the lighting device according to the embodiment as viewed from the ceiling light box side.

Fig. 8A is an enlarged partial cross-sectional view showing the relationship of the adaptor and the holder taken along line VIII-VIII of fig. 7.

Fig. 8B is a partially enlarged cross-sectional view showing a state in which the holder of fig. 8A is rotated in the arrow direction of fig. 7.

Fig. 9A is a view showing a 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 view showing a 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 of the embodiment is temporarily fixed to the adapter.

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

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

Detailed Description

The embodiments described below are all illustrative and specific examples. The numerical values, shapes, materials, constituent elements, arrangement positions and connection forms of the constituent elements, steps, order of the steps, and the like shown in the following embodiments are examples, and are not intended to limit the present invention. Further, among the constituent elements of the following embodiments, constituent elements that are not recited in the independent claims indicating the uppermost concept of the present invention are described as arbitrary constituent elements.

The drawings are schematic and not necessarily strictly illustrated. In the drawings, the same components are denoted by the same reference numerals. In the following embodiments, expressions such as substantially parallel are used. For example, substantially parallel means not only completely parallel but also substantially parallel, i.e., including an error of about a few percent, for example. The term "substantially parallel" means parallel to the extent that the effects of the present invention can be obtained. The same applies to other expressions using "approximate".

In the following description, the vertical direction of the illumination device is referred to as the Z-axis direction, and the arrangement direction of the first locking portion and the second locking portion is referred to as the Y-axis direction. The directions perpendicular to the Z-axis direction and the Y-axis direction are referred to as X-axis directions. The vertically upward direction in the Z-axis direction is referred to as the Z-axis positive direction, and the opposite direction is referred to as the negative direction. The same applies after fig. 2.

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

(embodiment mode)

< Structure >

Fig. 1 is a perspective view of a lighting device 1 and a ceiling rose 3 in which an adapter 10 is attached to a lighting fixture 100 in the embodiment.

As shown in fig. 1, the lighting device 1 is fixed to a ceiling, a wall, or the like, and is a device capable of illuminating a fixed surrounding space. The lighting device 1 is, for example, a ceiling lamp, a substrate light (base light), or the like. Specifically, the lighting device 1 is fixed to the ceiling lamp box 3 in a state of being electrically and mechanically connected to the ceiling lamp box 3 disposed on the ceiling.

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

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

< adaptor 10>

The adapter 10 is an adapter for a lighting apparatus that electrically and mechanically connects the ceiling lamp box 3 of the ceiling to the lighting apparatus 100. The adapter 10 is mounted on and fixed to the ceiling lamp house 3 by being rotated relative to the ceiling lamp house 3.

The adapter 10 includes a housing 20, first and second locking portions 31 and 32, an elastic member 40, first and second terminals 51 and 52, third and fourth terminals 53 and 54, a connecting portion 70, a lock portion 80, and a lock release key 90.

[ case 20]

The housing 20 is a cylindrical housing body that houses the components of the adapter 10 and is flat in the Z-axis direction. The housing 20 is provided with a first terminal 51, a second terminal 52, a third terminal 53, a fourth terminal 54, a connecting portion 70, and a first locking portion 31 and a second locking portion 32.

The housing 20 has a front surface 10a which is a surface facing the ceiling lamp box 3, and a rear surface 10b opposite to the front surface 10 a. Surface 10a is the face on the positive Z-axis side and is substantially parallel with respect to the X-Y plane. The back surface 10b is a surface on the negative Z-axis side and is substantially parallel to the X-Y plane.

The housing 20 has a main body 21 constituting the front surface 10a and a cover 22 constituting the rear surface 10 b.

The body portion 21 is formed of an insulating resin material, and is a bottomed cylindrical housing body that is flat in the Z-axis direction and houses the respective components of the adapter 10. The main body 21 has a cylindrical side wall 21a that opens the Z-axis negative side end, and a bottom 21b that forms the front surface 10a of the housing 20 with the Z-axis positive side end.

As shown in fig. 2, the engaging blades 51a of the first terminals 51 and the engaging blades 52a of the second terminals 52 project from the surface 10a of the body 21 in the Z-axis forward direction. The bottom 21b of the body 21 is formed with an insertion hole through which the first terminal 51 and the second terminal 52 are inserted.

A reference surface 29 is formed at a central portion of the surface 10a of the main body portion 21, the reference surface 29 being a surface on the Z-axis forward side and being a contact surface with the ceiling lamp box 3 when the adapter 10 is mounted to the ceiling lamp box 3 of fig. 1. The planar shape of the reference surface 29 is a substantially rectangular frame shape.

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

As shown in fig. 3 to 5, a first opening 21c and a second opening 21d are formed in the side wall portion 21a of the main body 21. The side wall portion 21a is an outer peripheral surface portion between the front surface 10a and the rear surface 10b of the body portion 21, and forms an outer peripheral surface 10c of the adapter 10. In a state where the first locking portion 31 is inserted from the first opening 21c, the first locking portion 31 protrudes outward (radially) from the outer peripheral surface 10c of the body 21. In a state where the second locking portion 32 is inserted from the second opening 21d, the second locking portion 32 protrudes outward from the outer peripheral surface 10c of the body portion 21. The outer peripheral surface 10c of the body portion 21 constitutes a part of the outer peripheral surface 10c of the adapter 10.

As shown in fig. 2 and 3, a second convex portion 21e that engages with the 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 protrusion 21e is engaged with the first protrusion 124 of the holder 120 by rotating about the central axis O of the adapter 10 (rotating the lighting fixture 100 in a predetermined direction), thereby releasing the first state in which the lighting fixture 100 is fixed to the adapter 10. That is, if 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 in the lighting fixture 100, and the first state in which the lighting fixture 100 is fixed to the adapter 10 is shifted to the second state in which the lighting fixture 100 is temporarily fixed, and the lighting fixture 100 is temporarily fixed to the adapter 10. The second projection 21e projects radially from the outer peripheral surface 10c of the side wall 21 a. 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 rotational direction of the lighting fixture 100. In the present embodiment, since the rotation direction of the lighting fixture 100 is only two directions (clockwise and counterclockwise), the second convex portion 21e has two inclined surfaces 21e 1. In the present embodiment, the second convex portion 21e has a substantially triangular shape when viewed in plan view from the outer peripheral surface 10c of the side wall portion 21 a. Here, the central axis O is substantially parallel to the Z-axis direction.

When the lighting fixture 100 is rotated, the first convex portion 124 of the lighting fixture 100 slides in a state of abutting against the inclined surface 21e1 of the second convex portion 21e, and the first convex portion 124 and the second convex portion 21e apply a biasing force that moves the lighting fixture 100 in the negative Z-axis direction.

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

In a central portion of the cover 22, a first insertion inlet 22a and a second insertion inlet 22b are formed.

As shown in fig. 3 and 4, the first insertion inlet 22a is formed to allow a first power supply terminal 123a of the holder 120, which will be described later, to be inserted therein, and has a circular opening surface in a plan view. The opening surface of the first inlet 22a is orthogonal to the central axis O.

The second inlet 22b is configured to allow a second power supply terminal 123b of the holder 120, which will be described later, to be inserted therein, and has an annular opening surface in a plan view. The second insertion inlet 22b is formed around the first insertion inlet 22a (so as to surround) and is formed concentrically with the first insertion inlet 22 a.

The depth directions of the first and second insertion inlets 22a and 22b and the attaching and detaching directions of the first and second power supply terminals 123a and 123b are substantially 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 resin members for the adapter 10 to hold the lighting fixture 100 in a predetermined posture. That is, the first locking portion 31 and the second locking portion 32 are members for locking the lighting fixture 100 to the adaptor 10. The first locking portion 31 and the second locking portion 32 protrude from the outer peripheral surface 10c of the adapter 10 so as to be able to advance and retreat, and the lighting fixture 100 is fixed to the adapter 10. The first locking portion 31 and the second locking portion 32 move in the Y-axis direction in synchronization with each other. In the present embodiment, two locking portions are used, but the number of locking portions may be 3 or more, or 1.

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

The first locking portion 31 and the second locking portion 32 each have a locking body 33 and an engagement projection 34.

The locking bodies 33 are provided in the first opening 21c and the second opening 21d of the body 21, and partially protrude from the outer peripheral surface 10c of the body 21. The locking body 33 and the engaging projection 34 are integrally formed.

Each locking body 33 is a rectangular flat plate shape that is flat in the Z-axis direction. The protruding portion of the locking body 33 protruding from the outer peripheral surface 10c of the body 21 is arc-shaped along the shape of the outer peripheral surface 10c of the body 21. The protruding portion of each locking body 33 is also a portion forming a part of the outer peripheral surface 10c of the adapter 10. The protruding portion of each locking body 33 is a portion that is engaged with the holder 120 to fix the lighting fixture 100 to the adapter 10. The protruding portion of each latching body 33 is formed in a step shape.

Specifically, each locking body 33 has a fixing portion 35 and a temporary fixing portion 36 formed at a protruding portion of the locking body 33.

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

As shown in fig. 6A, the fixing portion 35 fixes the lighting fixture 100 to the adapter 10 by locking the locked portion 122b of the holder 120 of the lighting fixture 100. In this case, when the lighting fixture 100 is fixed to the adapter 10, the first locking portion 31 and the second locking portion 32 are in the first state protruding from the outer peripheral surface 10c of the adapter 10 by the first amount a1, respectively. Here, the first state refers to a normally mounted state in which the adapter 10 is inserted and fixed to the holder 120 of the lighting fixture 100. The normal attachment state is a state in which the movement of the lighting fixture 100 is restricted even if the lighting fixture 100 is intended to move in the Z-axis direction (a state in which the first contact surface 35a of the fixing portion 35 is in contact with the contact surface 122a1 of the engaged portion 122 b), and the third terminal 53 and the fourth terminal 54 are connected to the connecting portion 70.

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

When the adapter 10 is viewed from the side, the fixing portion 35 is formed in a step shape with respect to the surface 10a of the body portion 21. The fixing portion 35 is formed with a first contact surface 35a located at a lower level than the front surface 10a of the main body portion 21. The first contact surface 35a is a surface that contacts the portion to be locked 122b of the holder 120 when the first locking portion 31 and the second locking portion 32 lock the portion to be locked 122b in the first state. Specifically, in the first state, the first abutment surface 35a abuts against the engaged portion 122b of the holder 120 in a state where the fixing portion 35 is opposed to the engaged portion 122b of the holder 120, and the engaged portion 122b of the holder 120 is engaged.

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

The temporary fixing portion 36 is engaged with the engaged portion 122b to temporarily fix the lighting fixture 100 to the adapter 10. In this case, when the lighting fixture 100 is temporarily fixed to the adapter 10, the first locking portion 31 and the second locking portion 32 are in the second state protruding from the outer peripheral surface 10c of the adapter 10 by the second amount a2 smaller than the first amount a 1. In the second state, the diameter of the outermost circumference S3 of the adapter 10 at the second amount a2 is larger than the diameter of the outermost circumference of the adapter 10 at the first amount a 1. Here, the second state is a state in which the adapter 10 is inserted and temporarily fixed to the holder 120 of the lighting fixture 100, and means a state in which the second abutment surface 36a of the temporarily fixing portion 36 abuts against the abutment surface 122a1 of the engaged portion 122 b. That is, the second state does not firmly fix the lighting fixture 100 to the adapter 10 as in the first state. For example, when the temporarily fixing portion 36 is engaged with the engaged portion 122b, the lighting fixture 100 is supported by the adapter 10, but when the lighting fixture 100 is pulled in the negative Z-axis direction in order to move in the Z-axis direction, the movement of the lighting fixture 100 may be permitted.

As shown in fig. 3 to 5, the temporarily securing portion 36 is an arc-shaped portion protruding from the outer peripheral surface 10c of the body portion 21 along the shape of the outer peripheral surface 10c of the body portion 21. 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 portion 36 is formed in a step shape with respect to the first contact surface 35a of the fixing portion 35, and protrudes radially outward from the side wall portion 21a of the body portion 21 than the fixing portion 35. The temporary fixing section 36 is formed with a second contact surface 36a located lower (on the Z-axis negative side) than the first contact surface 35a of the fixing section 35. That is, the temporarily fixing portions 36 and the fixing portions 35 are formed in a stepped structure at the protruding portion of the locking body 33.

As shown in fig. 6A, a circle S1 including the outermost peripheral edge of each of the temporary fixing portions 36 of the first and second locking portions 31 and 32 has a diameter larger than a circle S2 of the outer peripheral surface 10c of the body portion 21 and a diameter larger than a circle S4 including the outer peripheral surface 37 of each of the fixing portions 35 of the first and second locking portions 31 and 32.

The second contact surface 36a is a surface that contacts the portion to be locked 122b when the first locking portion 31 and the second locking portion 32 are engaged with the portion to be locked 122b in the second state. In other words, the second contact surface 36a is a surface that contacts 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 is brought into contact with the engaged portion 122b of the holder 120 in a state of facing the engaged portion 122b of the holder 120, and is engaged with the engaged portion 122b of the holder 120.

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

As shown in fig. 5 and 6B, the second contact surface 36a is inclined downward in a direction away from the outer peripheral surface 10c of the adapter 10 with respect to a virtual plane V orthogonal to the attaching and detaching direction of the adapter 10 to the ceiling lamp box 3 in fig. 1. In other words, the distance from the virtual plane V increases as the inclined surface 21e1 is separated from the outer peripheral surface 10 c. The second contact surface 36a is an inclined surface of the temporary fixing portion 36 inclined downward in a direction away from the center axis O of the adapter 10 substantially parallel to the Z-axis direction, and constitutes an inclined surface curved with respect to the X-Y plane. 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 body portion 21.

When the adapter 10 is cut off by a plane including the central axis O of the adapter 10 and parallel to the direction of attaching and detaching the adapter 10 to and from the ceiling lamp box 3 in the locking body 33, when the first and second locking portions 31 and 32 lock the to-be-locked portion 122b of the holder 120 in the first state, a first angle θ 1 formed by the first abutment surface 35a of the fixing portion 35 abutting against the to-be-locked portion 122b of the holder 120 and the outer peripheral surface 10c of the adapter 10 parallel to the attaching/detaching direction (Z-axis direction) of the adapter 10 to the ceiling lamp box 3 is smaller than a second angle θ 2 formed by the second abutment surface 36a of the temporary fixing portion 36 abutting against the to-be-locked portion 122b of the holder 120 and the outer peripheral surface 10c of the adapter 10 parallel to the attaching/detaching direction of the adapter 10 to the ceiling lamp box 3 when the first and second locking portions 31 and 32 lock the to-be-locked portion 122b of the holder 120 in the second state. In other words, the second angle θ 2 formed by the outer peripheral surface 37 of the locking body 33 (or the fixing portion 35) and the second contact surface 36a is larger than the first angle θ 1 formed by the first contact surface 35a and the outer peripheral surface 37 of the locking body 33 (or the fixing portion 35). That is, in the locking body 33, when the first locking portion 31 and the second locking portion 32 lock the to-be-locked portion 122b of the lighting fixture 100 in the first state, the locking force in the detaching direction (the Z-axis negative direction) when the first locking portion 31 and the second locking portion 32 lock the to-be-locked portion 122b in the first state, which form the fixing portion 35 of the first angle θ 1, is larger than the locking force in the detaching direction when the first locking portion 31 and the second locking portion 32 lock the to-be-locked portion 122b in the second state, which form the temporary fixing portion 36 of the second angle θ 2 with the outer peripheral surface 37 of the fixing portion 35. Therefore, in the case of the second state, the lighting fixture 100 is more easily detached from the adapter 10 than in the case of the first state.

As shown in fig. 3 to 5, the engagement projection 34 is formed integrally with the locking body 33 and is provided so as to extend from the locking body 33. Specifically, the engagement projection 34 projects from the end edge of the locking body 33 on the opposite side of the projecting portion of the locking body 33 in the direction of the central axis O of the adapter 10 (the center in the radial direction of the body 21).

An elastic member 40 is attached to the engagement projection 34. The engagement projection 34 is engaged with an end of the elastic member 40, and is biased radially outward from the side wall 21a of the body 21 by the elastic member 40 together with the locking body 33. The radially outer side is a direction away from the center of the body 21 in the radial direction.

[ elastic Member 40]

The elastic member 40 is a torsion spring in the present embodiment, but may be another elastic member 40. The elastic member 40 biases the first locking portion 31 and the second locking portion 32 outward in the radial direction of the side wall portion 21a of the body 21. The elastic member 40 is configured to protrude such that the first locking portion 31 and the second locking portion 32 can freely advance and retreat with respect to the side wall portion 21a (outer circumferential surface 10c) of the main body 21.

In the present embodiment, the elastic member 40 moves the first locking portion 31 in the negative Y-axis direction and moves the second locking portion 32 in the positive Y-axis direction.

[ first terminal 51 and second terminal 52]

The first terminal 51 and the second terminal 52 are detachably fixed to the ceiling lamp box 3 of fig. 1 electrically connected to a power supply wire. The first terminal 51 and the second terminal 52 are metal plate-like members, and are a pair of terminals for receiving power supply from the ceiling lamp box 3 to the lighting fixture 100. The first terminal 51 and the second terminal 52 are fixed to the inner bottom 21b of the body 21 by a fixing member such as a screw. In the present embodiment, two terminals, i.e., the first terminal 51 and the second terminal 52, are illustrated, but the adapter 10 may have 3 or more terminals.

The first terminal 51 and the second terminal 52 are electrically connected to a pair of power supply terminals (not shown) in the ceiling lamp line box 3 by inserting one end portion (L-shaped portion) of the first terminal 51 into the power supply port 3a of the ceiling lamp line box 3 and inserting one end portion of the second terminal 52 into the power supply port 3a of the ceiling lamp line box 3. The lighting apparatus 100 receives supply of ac power from the ceiling-mounted light box 3, for example, but may receive supply of dc power.

As shown in fig. 3, one end of the first terminal 51 and one end of the second terminal 52 are engaging blades 51a and 52a protruding from the front surface 10a of the body 21. The engaging blades 51a and 52a, which are the protruding portions of the first terminal 51 and the second terminal 52, are formed in an L-shape in side view, and have a hook shape.

As shown in fig. 1 and 3, the adapter 10 and the ceiling lamp box 3 are mechanically connected by inserting the engaging blade 51a of the first terminal 51 into the power supply port 3a of the ceiling lamp box 3 and inserting the engaging blade 52a of the second terminal 52 into the power supply port 3a of the ceiling lamp box 3. When the adapter 10 is rotated in a state where the engaging blade 51a of the first terminal 51 is inserted into the power supply port 3a of the ceiling lamp line box 3 and the engaging blade 52a of the second terminal 52 is inserted into the power supply port 3a of the ceiling lamp line box 3, the first terminal 51, the second terminal 52, and the locking portion 80 are engaged with the ceiling lamp line box 3 and are prevented from rotating.

As shown in fig. 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 is housed in the main body 21. The other end of the second terminal 52 is electrically and mechanically connected to one end of the fourth terminal 54, and is housed in the main body 21.

[ third terminal 53 and fourth terminal 54]

The third terminal 53 and the fourth terminal 54 are metal plate-like members, and are a pair of terminals for receiving power supply from the ceiling lamp box 3 of fig. 1 to the lighting apparatus 100. One end of the third terminal 53 is electrically and mechanically connected to the other end of the first terminal 51. 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 21b of the body 21 by a fixing member such as a screw, and the third terminal 53 is pressed and fixed to the inner bottom 21 b. The second terminal 52 is fixed to the inner bottom 21b of the body 21 by a fixing member such as a screw, whereby the fourth terminal 54 is pressed and fixed to the inner bottom 21 b.

In the present embodiment, one end of the third terminal 53 and one end of the fourth terminal 54 are fork-shaped 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 disposed in the first inlet 22 a. The other end 54a of the fourth terminal 54 is disposed in the second inlet 22 b. The other end 53a of the third terminal 53 extends in the Z-axis direction so as to be electrically connected to the first power supply terminal 123a, and is a terminal having a fork shape that sandwiches the first power supply terminal 123 a. The other end 54a of the fourth terminal 54 extends in the Z-axis direction so as to be electrically connected to the second power supply terminal 123b, and is a terminal having a fork shape with the second power supply terminal 123b interposed therebetween. The other end 53a of the third terminal 53 and the other end 54a of the fourth terminal 54 receive the insertion of the first power supply terminal 123a and the second power supply terminal 123b in the Z-axis forward direction.

The first terminal 51 and the third terminal 53 may be 1 integrated component, and the second terminal 52 and the fourth terminal 54 may be 1 integrated component.

[ connecting part 70]

The connection unit 70 is provided on the back surface 10b of the adapter 10 opposite to the surface 10a on which the first terminal 51 and the second terminal 52 are provided, and is electrically connected to the ceiling lamp box 3 of fig. 1 via the first terminal 51 and the second terminal 52 to supply power to the lighting fixture 100.

Specifically, the connection portion 70 includes the other end 53a of the third terminal 53 disposed from the first insertion inlet 22a to the Z-axis positive direction side to be electrically connected to the first power supply terminal 123a of the holder 120, the other end 54a of the fourth terminal 54 disposed from the second insertion inlet 22b to the Z-axis positive direction side to be electrically connected to the second power supply terminal 123b of the holder 120, and the first insertion inlet 22a and the second insertion inlet 22 b. More specifically, the connection portion 70 has a first power supply portion 70a and a second power supply portion 70 b. The first power supply part 70a includes a first insertion inlet 22a formed at a central portion of the cover 22, and the other end 53a of the third terminal 53 inserted into the first insertion inlet 22a to be electrically connected to the first power supply terminal 123a of the holder 120. The second power supply portion 70b includes a second power supply terminal 123b formed in a central portion of the cover 22, and the other end 54a of the fourth terminal 54 inserted into the second insertion port 22b and electrically connected to the second power supply terminal 123b of the holder 120. The first power feeding portion 70a and the second power feeding portion 70b have shapes corresponding to the first power feeding terminal 123a and the second power feeding terminal 123 b.

The connection unit 70 is detachably provided to the first power supply terminal 123a and the second power supply terminal 123b, which are the connection target units 123 of the lighting fixture 100. The connection unit 70 is electrically connected to the connected unit 123 of the lighting fixture 100 in the first state, and is not electrically connected to the connected unit 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 123 b.

[ locking part 80]

The lock portion 80 is a member for restricting the movement of the adapter 10 relative to the ceiling lamp string box 3 in order to maintain the first state of fixing the adapter 10 to the ceiling lamp string box 3 of fig. 1. The lock portion 80 is formed of a resin material.

The lock portion 80 includes an extension 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 protrusion 81 protrudes from an opening provided in the surface 10a of the main body 21, and is inserted into the power supply port 3a provided in the ceiling lamp box 3, thereby restricting the movement of the adapter 10 with respect to the ceiling lamp box 3.

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

The guide portion 82 is a groove portion for slidably guiding a pin 91 of the lock release key 90 described later. The guide 82 is formed with a groove inclined in the moving direction of the pin 91, i.e., the direction in which the lock release key 90 is pushed in.

As shown in fig. 1 and 3, for example, when the adapter 10 is rotated and the projecting portion 81 of the locking portion 80 is positioned to overlap the power supply port 3a of the ceiling lamp housing 3, the projecting portion 81 projects further from the opening provided in the surface 10a of the main body portion 21 by the biasing force of the coil spring and is inserted into the power supply port 3a of the ceiling lamp housing 3. Thereby, the rotation of the adapter 10 with respect to the ceiling lamp house 3 is restricted, and the rotation of the adapter 10 with respect to the ceiling lamp house 3 is locked.

[ unlocking key button 90]

The lock release key 90 is a key that is pressed to pull out the extension 81 from the power supply port 3a of the ceiling lamp line box 3, and is provided on the side wall 21a of the main body 21. The lock release key 90 is a resin member partially exposed from the main body 21 to the outside 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 in the lock release key 90. When the unlock key button 90 is pushed into the main body portion 21 and engaged with the guide portion 82 of the lock portion 80, the pin 91 is slidably moved in the guide portion 82.

For example, when the pin 91 moves in the direction in which the lock release button 90 is pushed in, the inner wall of the guide portion 82 is pushed in the Z-axis negative direction, and the lock portion 80 moves in the Z-axis negative direction. As a result, the extension 81 is pulled out from the power supply port 3a of the ceiling lamp line box 3 against the urging force of the coil spring. Thereby, the restriction of the rotation of the adapter 10 with respect to the ceiling-lamp-line box 3 is released. The adapter 10 can be rotated with respect to the ceiling lamp house 3 while the lock release button 90 is pressed, and the adapter 10 can be detached from the ceiling lamp house 3.

< Lighting apparatus 100>

As shown in fig. 2 and 4, the lighting fixture 100 includes a fixture body 110 that houses the light source 130, a holder 120 to which the adapter 10 is detachably attached, the light source 130, a diffusion cover 140, and a power supply unit 150. In the present embodiment, the lighting fixture 100 is a bottomed cylindrical fixture which is circular in plan view and flat in the Z-axis direction.

[ device body 110]

The device main body 110 is made of, for example, a metal or a resin containing aluminum, iron, or the like as a main component, and constitutes a housing for housing the holder 120, the light source 130, the power supply unit 150, and the like. The device body 110 functions as a heat dissipation unit that dissipates heat generated from the light source 130 and the power supply unit 150.

Further, the appliance main body 110 includes: a container-shaped housing portion 111 that houses the holder 120, the power supply portion 150, and the like, and has an opening at the edge on the negative Z-axis side; and a flange-like flange portion 112 extending from an edge of the receiving portion 111 on the Z-axis negative side in the radial direction of the central axis O of the lighting fixture 100.

The housing portion 111 is a container having a circular shape in plan view, and has an opening 113 formed in the center thereof for fixing the holder 120. Specifically, the holder 120 covering the opening 113 of the housing 111 is fixed by a fixing member such as a screw.

The collar portion 112 is annular and extends from the edge on the Z-axis negative side of the receiving portion 111 in the radial direction of the receiving portion 111. The light source 130 is fixed to the surface of the flange 112 on the Z-axis negative side by a fixing member such as a screw. A diffusion cover 140 is fixed to an outer peripheral edge of the flange portion 112 so as to cover the light source 130.

[ holding member 120]

The holder 120 is a bottomed cylindrical housing body that houses the adapter 10 and is flat in the Z-axis direction. The holder 120 is circular in plan view. The holder 120 is made of, for example, an insulating resin material.

The holder 120 includes a cylindrical outer peripheral wall portion 121 having an insertion opening 122a formed therein for opening the Z-axis positive side end portion, a bottom portion 122 for closing the Z-axis negative side end portion of the outer peripheral wall portion 121, a first power supply terminal 123a, and a second power supply terminal 123 b.

Outer peripheral wall 121 is fixed to receiving portion 111 of device body 110 such that central axis O of outer peripheral wall 121 substantially coincides with central axis O of adapter 10. Specifically, the outer peripheral wall portion 121 includes a fixing piece 121a in a protruding shape protruding in the outer diameter direction from the edge on the Z-axis positive direction side. The fixing piece 121a is fixed by a fixing member such as a screw in a state where the outer peripheral wall portion 121 is inserted into the opening portion 113 of the housing portion 111 so that the central axis O of the outer peripheral wall portion 121 substantially coincides with the central axis O of the opening portion 113 of the housing portion 111.

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

When the holder 120 (lighting fixture 100) is rotated in the circumferential direction around the central axis O with respect to the adapter 10, the third projecting portion 125 abuts against the first locking portion 31 and the second locking portion 32 of the adapter 10, and the amount of protrusion of the first locking portion 31 and the second locking portion 32 with respect to the outer circumferential surface 10c of the adapter 10 changes.

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 central axis O direction of the adapter 10. More specifically, the third protrusion 125 is a convex structure protruding from a part of the inner peripheral surface of the outer peripheral wall 121 along the central axis O of the outer peripheral wall 121. The third projecting portion 125 has a projecting amount by which the first locking portion 31 and the second locking portion 32 of the adapter 10 move in the direction of the central axis O of the adapter 10 by coming into contact with the first locking portion 31 and the second locking portion 32 when the holder 120 rotates around the central axis O of the adapter 10. More specifically, the third projecting portion 125 has a projecting amount for releasing the engagement between the fixing portion 35 of each of the first and second locking portions 31 and 32 and the to-be-locked portion 122b, and does not have a projecting amount for releasing the engagement between the temporary fixing portion 36 of each of the first and second locking portions 31 and 32 and the to-be-locked portion 122 b.

The outer peripheral wall portion 121 has an engaged portion 122b that extends from an edge on the Z-axis positive direction side toward the inner peripheral side, that is, so as to reduce the opening area of the insertion port 122a of the outer peripheral wall portion 121.

The portion to be locked 122b abuts against the fixing portion 35 of the locking body 33 of each of the first locking portion 31 and the second locking portion 32 in the first state where the lighting fixture 100 is fixed to the adapter 10 in the normal state. More specifically, in the first state, the contact surface 122b1, which is the Z-axis negative side surface of the engaged portion 122b (the surface facing the fixed portion 35), contacts the first contact surface 35a of the fixed portion 35.

In the second state where the lighting fixture 100 is temporarily fixed to the adapter 10, the portion to be locked 122b abuts against the temporarily fixing portion 36 of the locking body 33 of each of the first locking portion 31 and the second locking portion 32. More specifically, in the second state, the contact surface 122b1, which is the Z-axis negative side surface of the engaged portion 122b (the surface facing the temporary securing portion 36), contacts or faces the second contact surface 36a of the temporary securing portion 36.

A first convex portion 124 is formed on the surface of the engaged portion 122b on the Z-axis positive side. When the holder 120 (lighting fixture 100) is rotated in the circumferential direction around the central axis O with respect to the adapter 10, the first convex portion 124 engages with the second convex portion 21e of the adapter 10, and the state of the adapter 10 fixed to the lighting fixture 100 is changed to the temporarily fixed state.

The first convex portion 124 is a convex structure that exerts a biasing force to press down the lighting fixture 100 in the negative Z-axis direction via the holder 120. More specifically, the first convex portion 124 is a substantially triangular convex structure in front view, 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 be formed with an inclined surface that is inclined upward in the circumferential direction around the central axis O of the adapter 10, since the second convex portion 21e of the holder 120 may be pushed up to apply a biasing force that presses down the lighting fixture 100 in the negative Z-axis direction via the holder 120.

The bottom 122 is a plate-like bottom plate substantially parallel to the X-Y 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 a central 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, is a connection terminal for supplying power supplied from the ceiling lamp box 3 of fig. 1 via the adapter 10, and is a male type connection portion. The first power supply terminal 123a is fixed to the bottom portion 122 of the holder 120 by a fixing member such as a screw so that the central axis O of the first power supply terminal 123a substantially coincides with the central axis O of the adapter 10 and the central axis O of the outer peripheral wall portion 121.

The second power supply terminal 123b is a cylindrical terminal, a connection terminal for supplying power supplied from the ceiling lamp box 3 via the adapter 10, and a male connection portion. The second power supply terminal 123b is formed around the first power supply terminal 123a (so as to surround) and is formed concentrically with respect to the first power supply terminal 123 a. The second power supply terminal 123b is fixed to the bottom portion 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 portion 121. Since the second power supply terminal 123b only needs to surround the first power supply terminal 123a, it does not have to be cylindrical.

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

In the present embodiment, the first power supply terminal 123a is a columnar 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 lighting that brightens the entire room. The light source 130 is disposed on a mounting surface of the collar portion 112 of the device body 110, which is a surface on the Z-axis negative side, and is fixed to the device body 110 so as to irradiate light to the surroundings.

The light source 130 includes a substrate 131 and a plurality of led (light Emitting diode) modules 132.

The substrate 131 is a mounting substrate having a mounting surface for mounting the LED module 132. The substrate 131 is formed in a substantially disk shape. The substrate 131 is fixed to the mounting surface of the flange portion 112 of the device body 110 by a fixing member such as a screw so as to cover the housing of the device body 110 when viewed in the Z-axis direction. Specifically, the substrate 131 is fixed to the apparatus main body 110 in a posture substantially parallel to the X-Y plane so that the mounting surface faces the negative Z-axis 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 which is a sintered body of a ceramic material such as alumina, a resin substrate mainly made of a resin material, or the like is used. The substrate 131 may be a printed wiring substrate, a rigid substrate, or a flexible substrate.

The LED modules 132 are disposed on the mounting surface of the substrate 131. The LED modules 132 are arranged in a plurality of annular rows, i.e., concentrically, by the substrate 131. In the present embodiment, the LED modules 132 are arranged in 4 rows in the radial direction.

The LED modules 132 are configured to emit white light, for example. Specifically, the plurality of LED modules 132 includes: a plurality of blue LEDs, each of which is a bare chip (LED chip) mounted On the substrate 131, and is formed of a cob (chip On board) type LED element; and a sealing member for sealing the blue LEDs and containing a yellow phosphor. Further, the plurality of LED modules 132 may emit light of 2 colors or more. Specifically, the LED modules 132 may be RGB 3-color LED light sources that emit 3-color monochromatic light of red light, blue light, and green light, and emit color light or white light obtained by dimming the 3-color monochromatic light.

The plurality of LED modules 132 may be Surface Mount (SMD) type LED elements in which LEDs are packaged, and include a container (package), a plurality of LED chips mounted in the container, and a sealing member sealing the plurality of LED chips. The sealing member is made of a light-transmitting insulating resin material such as silicone resin. Further, a light diffusing material such as silica, a filler, or the like may be dispersed in the sealing member.

In the present 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 LED modules 132 are the main light emission direction and are substantially parallel to the negative Z-axis 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 light incident from the light source 130 to the outside. The diffusion cover 140 is supported by the device body 110 in a state of being spaced apart from the light source 130 by a predetermined distance. Specifically, the diffuser cover 140 is circular when viewed from the Z-axis direction, and is supported by the outer peripheral edge of the flange portion 112 of the device body 110.

The diffusion cover 140 has light transmittance. For example, the diffusion cover 140 is made of a material having light transmittance such as acrylic resin. For example, the diffusion cover 140 may be a milky-white diffusion panel in which a light diffusion material is dispersed. Further, fine irregularities (embossings) may be formed on the surface 10a of the diffusion cover 140 by embossing or the like. Thereby, the light incident on the diffusion cover 140 by the light emission of the light source 130 is transmitted through the diffusion cover 140 and is scattered. This reduces the brightness unevenness of the diffusion cover 140 when the diffusion cover 140 is viewed from the negative Z-axis direction.

[ Power supply section 150]

The power supply unit 150 is a power supply module having a lighting circuit that supplies power for lighting the light source 130. The power supply unit 150 rectifies, smoothes, and steps down an ac power supplied from an external power supply such as a commercial power supply via the ceiling lamp box 3 and the adapter 10 to convert the ac power into a dc power of a predetermined level. The power supply unit 150 supplies the converted direct current to the light source 130 via a wire or the like. Further, a dimming circuit, a boosting circuit, and the like may be combined with the power supply unit 150.

The power supply unit 150 is composed of, for example, a printed circuit board on which metal wiring having a predetermined shape is formed, a plurality of circuit elements mounted on the printed circuit board, and the like. The circuit element is an electronic component for emitting light from the light source 130, and is, for example, a capacitive element (electrolytic capacitor, ceramic capacitor, or the like), a resistive element (resistor, or the like), a rectifier circuit element, a coil element, a choke coil (choke transformer), an integrated circuit element (IC), a semiconductor element (FET, or the like), or the like.

The power supply unit 150 is housed in the housing portion 111 of the device body 110, and is disposed between the light source 130 and the holder 120. The power supply unit 150 is fixed to the housing unit 111 by a fixing member such as a screw.

< action >

First, a case where the adapter 10 is attached to the ceiling lamp box 3 will be described.

As shown in fig. 1 and 4, the power supply ports 3a of the ceiling lamp box 3 are aligned with the first locking portions 31 and the second locking portions 32 of the adapter 10, and the adapter 10 is rotated in the circumferential direction of the central axis O of the adapter 10 by inserting the first locking portions 31 and the second locking portions 32 into the power supply ports 3 a. Thereby, the adapter 10 is electrically and mechanically connected to and fixed to the ceiling-lamp-line box 3.

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

As shown in fig. 2, 4, and 5, the holder 120 of the lighting apparatus 100 is aligned so as to overlap the adapter 10, and the lighting apparatus 100 is pushed up so that the adapter 10 is inserted from the insertion port 122a of the holder 120. At this time, the first locking portion 31 and the second locking portion 32 of the adapter 10 slide while abutting against the locked portion 122b of the holder 120, and the first locking portion 31 and the second locking portion 32 are pushed by the locked portion 122b to move in the central axis O direction of the adapter 10. Thereby, the adapter 10 can be inserted from the insertion port 122a of the holder 120 of the lighting apparatus 100.

When the adapter 10 is inserted into the holder 120 of the lighting apparatus 100, the first locking portion 31 and the second locking portion 32 move in the outer diameter direction of the adapter 10 by the biasing force of the elastic member 40. The outer peripheral surface 37 of the fixing portion 35 of the first locking portion 31 and the outer peripheral surface 37 of the fixing portion 35 of the second locking portion 32 abut against the inner peripheral surface of the portion to be locked 122b, and the second abutting surface 36a of the temporary fixing portion 36 of the first locking portion 31 and the second abutting surface 36a of the temporary fixing portion 36 of the second locking portion 32 abut against the portion to be locked 122 b. That is, the locked portion 122b is in the second state of being temporarily fixed to the temporarily fixing portion 36 of the first locking portion 31 and the temporarily fixing portion 36 of the second locking portion 32, and the lighting fixture 100 and the adaptor 10 are 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.

Further, when the adaptor 10 is inserted into the holder 120 of the lighting apparatus 100, the inner peripheral surface of the to-be-locked portion 122b, the outer peripheral surface 37 of the fixing portion 35 of the first locking portion 31, and the outer peripheral surface 37 of the fixing portion 35 of the second locking portion 32 slide, and then the first locking portion 31 and the second locking portion 32 are further moved in the outer diameter direction of the adaptor 10 by the urging force of the elastic member 40. That is, when the locked portion 122b is separated from the fixed portion 35 of the first locking portion 31 and the fixed portion 35 of the second locking portion 32, the first locking portion 31 and the second locking portion 32 return to the original postures by the urging force of the elastic member 40. The positions of the first locking portion 31 and the second locking portion 32 shown by the two-dot chain line in fig. 5 are shifted 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. 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.

Under the weight of the lighting fixture 100, the surface on the Z-axis negative side of the engaged portion 122b of the holder 120 comes into contact with the first contact surface 35a of the fixing portion 35 of the first locking portion 31 and the first contact surface 35a of the fixing portion 35 of the second locking portion 32. Thereby, the lighting fixture 100 is fixed to the adapter 10 in a normal state and is firmly held, thereby receiving the supply of electric power from the ceiling rose 3.

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

Fig. 7 is a plan view of the lighting device 1 of the embodiment as viewed from the ceiling rose 3 side. Fig. 8A is an enlarged partial cross-sectional view showing the relationship of the adaptor 10 and the holder 120 taken along line VIII-VIII of fig. 7. Fig. 8B is a partially enlarged cross-sectional view showing a state in which the holder 120 of fig. 8A is rotated in the arrow direction of fig. 7. Fig. 9A is a view showing a sectional view of the holder 120 and a plan view of the adapter 10 in the relationship of the adapter 10 and the holder 120 in the state of fig. 8A. Fig. 9B is a view showing a sectional view of the holder 120 and a plan view of the adapter 10 in the relationship of the adapter 10 and the holder 120 in the state of fig. 8B.

As shown in fig. 7, 8A, and 8B, when the lighting fixture 100 is rotated in the circumferential direction of the central axis O (the arrow direction in fig. 7), the first convex portion 124 of the holder 120 abuts against the second convex portion 21e of the body portion 21 of the adapter 10, and the second convex portion 21e slides on the first convex portion 124 and pushes down the lighting fixture 100 in the negative Z-axis direction. At this time, as shown in fig. 9A and 9B, the third convex portion 125 in the holder 120 slides in contact with the fixing portion 35 of the first locking portion 31 and the fixing portion 35 of the second locking portion 32, and the fixing portion 35 of the first locking portion 31 and the fixing portion 35 of the second locking portion 32 are pressed by the third convex portions 125, whereby the first locking portion 31 and the second locking portion 32 move in the central axis O direction of the adapter 10.

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

As a result, as shown in fig. 10, the first contact surface 35a of the fixing portion 35 of the first locking portion 31 and the first contact surface 35a of the fixing portion 35 of the second locking portion 32 are separated from the contact surface 122b1 of the to-be-locked portion 122b of the holder 120 (the first state is released), and the lighting fixture 100 moves in the negative Z-axis direction, so that the to-be-locked portion 122b contacts the second contact surface 36a of the temporary fixing portion 36 of the first locking portion 31 and the second contact surface 36a of the temporary fixing portion 36 of the second locking portion 32. The positions of the first locking portion 31 and the second locking portion 32 shown by the two-dot chain line in fig. 10 are shifted 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 separated from the other end 53a of the third terminal 53, and is electrically disconnected. 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 adaptor 10 in the second state of being temporarily fixed to the temporarily fixing portion 36 of the first locking portion 31 and the temporarily fixing portion 36 of the second locking portion 32.

When the lighting fixture 100 is pushed down in the Z-axis negative direction, the engaged portion 122b abuts against and slides on the second abutment surface 36a of the temporary fixing portion 36 of the first locking portion 31 and the second abutment surface 36a of the temporary fixing portion 36 of the second locking portion 32, and is pressed by the engaged portion 122b, so that the first locking portion 31 and the second locking portion 32 move in the central axis O direction of the adaptor 10. Thereby, the lighting fixture 100 can be detached from the adapter 10.

< Effect >

Next, the operation and effects of the adapter 10, the lighting device 1, and the lighting fixture 100 according to the present embodiment will be described.

As described above, the adapter 10 of the present embodiment is an adapter 10 for electrically and mechanically connecting the ceiling lamp string box 3 to the lighting fixture 100, and includes: a plurality of engaging blades 51a, 52a detachably fixed to the ceiling lamp box 3 to which power is supplied; and a connecting portion 70 provided on a back surface 10b of the adapter 10 opposite to the front surface 10a on which the plurality of engaging blades 51a, 52a are provided, and electrically connected to the plurality of engaging blades 51a, 52a to supply power to the lighting fixture 100. The connection portion 70 includes: a first power supply portion 70a electrically connected to a first power supply terminal 123a provided in the lighting fixture 100; and a second power supply portion 70b electrically connected to a second power supply terminal 123b provided to surround the first power supply terminal 123a provided in the lighting fixture 100.

Thus, the connection portion 70 of the lighting fixture 100 can be electrically and mechanically connected to the adapter 10 by aligning the connection portion 70 of the lighting fixture 100 with the adapter 10 and pushing up the lighting fixture 100. That is, the lighting fixture 100 may not be disassembled and the wiring of the lighting fixture 100 may not be electrically connected to the adapter 10 as in the conventional case.

Therefore, in the adapter 10, the lighting fixture 100 can be easily connected to the adapter 10 by removing the wiring of the lighting fixture 100.

In particular, in the adapter 10, since the wiring of the conventional lighting fixture can be removed, the number of components of the lighting fixture 100 of the present embodiment can be reduced. As a result, an increase in the manufacturing cost of the lighting fixture 100 can be suppressed.

The lighting apparatus 100 of the present embodiment is electrically connected to the ceiling lamp box 3 via the adapter 10, and includes: a first power supply terminal 123a provided in a holder to which the adapter 10 is detachably attached and fixed to the lighting fixture 100, and connected to the first power supply portion 70a of the adapter 10; and a second power supply terminal 123b provided to surround the first power supply terminal 123a and connected to the second power supply portion 70b of the adapter 10.

The lighting fixture 100 also exhibits the same operational effects as described above.

In the adapter 10 of the present embodiment, the first power supply terminal 123a and the second power supply terminal 123b of the lighting fixture 100 are convex terminals extending in the attachment/detachment direction, and the first power supply portion 70a and the second power supply portion 70b of the adapter 10 are concave power supply portions into which the first power supply terminal 123a and the second power supply terminal 123b are inserted. Alternatively, the first power supply terminal 123a and the second power supply terminal 123b of the lighting fixture 100 are concave terminals extending in the attachment/detachment direction, and the first power supply portion 70a and the second power supply portion 70b of the adapter 10 are convex power supply portions inserted into the first power supply terminal 123a and the second power supply terminal 123 b.

Thus, the electrical connection and the mechanical connection between the lighting fixture 100 and the adapter 10 can be reliably performed simply by pushing the lighting fixture 100 into the adapter 10.

In the adapter 10 of the present embodiment, the second power supply portion 70b is arranged concentrically around the first power supply portion 70 a.

This enables the lighting fixture 100 to be rotated with respect to the adapter 10. Therefore, even if a force for rotating the lighting fixture 100 is applied, excessive torque is not easily applied to the lighting fixture 100, and thus damage to the components constituting the lighting fixture 100 can be suppressed.

The adapter 10 of the present embodiment is an adapter 10 for electrically and mechanically connecting the ceiling lamp box 3 to the lighting fixture 100, and includes: a plurality of engaging blades 51a, 52a detachably fixed to the ceiling lamp box 3 electrically connected to a power supply line; a connection unit 70 provided on a back surface 10b of the adapter 10 opposite to a front surface 10a on which the plurality of engaging blades 51a and 52a are provided, electrically connected to the plurality of engaging blades 51a and 52a, and configured to supply power to the lighting fixture 100; and a first locking portion 31 and a second locking portion 32 that protrude from the outer peripheral surface 10c of the adapter 10 so as to be able to advance and retreat, thereby fixing the lighting fixture 100 to the adapter 10. The first locking portion 31 and the second locking portion 32 each have: a fixing portion 35 that fixes the lighting fixture 100 to the adapter 10 by locking the locked portion 122b of the lighting fixture 100; and a temporary fixing portion 36 that is engaged with the engaged portion 122b to temporarily fix the lighting fixture 100 to the adapter 10. The temporarily fixing portion 36 has an abutment surface 122b1 that abuts against the engaged portion 122b when the lighting fixture 100 is temporarily fixed to the adapter 10. The abutment surface 122b1 is a second abutment surface 36a inclined downward in a direction away from the outer peripheral surface 10c of the adapter 10 with respect to a virtual plane V orthogonal to the direction of attaching and detaching the adapter 10 to and from the ceiling lamp box 3.

Thus, when the lighting fixture 100 is detached from the ceiling lamp string box 3, the fixing portions 35 of the first locking portion 31 and the second locking portion 32 are unlocked from the locked portions 122b by, for example, rotating the lighting fixture 100. When the locking is released, the lighting fixture 100 moves vertically downward relative to the adapter 10 by its own weight, but since the locked portion 122b engages with the temporary fixing portion 36, the lighting fixture 100 is locked to the adapter 10, and the lighting fixture 100 is prevented from falling.

Therefore, according to the adapter 10, even if the lighting device 1 is accidentally moved, the lighting device 1 can be suppressed from falling.

In particular, since the contact surface of the temporary fixing portion 36 is the second contact surface 36a, even if the engaged portion 122b is engaged with the temporary fixing portion 36, the engagement between the engaged portion 122b and the temporary fixing portion 36 can be released by the movement of the first locking portion 31 and the second locking portion 32 by simply pushing down the lighting fixture 100. Therefore, the lighting fixture 100 can be reliably and safely detached.

The lighting device 1 of the present embodiment includes an adapter 10 and a lighting fixture 100 electrically connected to the adapter 10.

The lighting fixture 100 also exhibits the same operational effects as described above.

Further, the adapter 10 of the present embodiment includes the first locking portion 31 and the second locking portion 32 that protrude from the outer peripheral surface 10c of the adapter 10 so as to be able to advance and retreat to fix the lighting fixture 100 to the adapter 10, and the first locking portion 31 and the second locking portion 32 are in the first state protruding from the outer peripheral surface 10c of the adapter 10 by the first amount a1 when the lighting fixture 100 is fixed to the adapter 10.

Accordingly, in the first state, since the fixing portions 35 of the first locking portion 31 and the second locking portion 32 are locked to the locked portions 122b, the vertical movement of the lighting fixture 100 can be suppressed. Therefore, even if the lighting device 1 is accidentally moved, the first locking portion 31 and the second locking portion 32 can reliably fix the lighting fixture 100 to the adapter 10. Thus, the adapter 10 can preferably suppress the lighting device 1 from falling down.

In the adapter 10 of the present embodiment, when the lighting fixture 100 is temporarily fixed to the adapter 10, each of the first locking portion 31 and the second locking portion 32 is in the second state protruding from the outer peripheral surface 10c of the adapter 10 by the second amount a2 smaller than the first amount a 1.

Thus, even if the first state is released, the lighting fixture 100 can be held in the adapter 10 in a predetermined posture because the first state is shifted to the second state from the first state by the temporary fixing portions 36 of the first locking portion 31 and the second locking portion 32. Thus, the adapter 10 can further suppress the lighting device 1 from falling down.

In the adapter 10 of the present embodiment, when the adapter 10 is cut off by a plane including the central axis O of the adapter 10 and parallel to the direction of attaching and detaching the adapter 10 to and from the ceiling lamp box 3, the first contact surface 35a of the first and second locking portions 31 and 32 that comes into contact with the to-be-locked portion 122b of the lighting fixture 100 when the first and second locking portions 31 and 32 are locked in the first state, and the second contact surface 36a of the first and second locking portions 31 and 32 that comes into contact with the to-be-locked portion 122b when the first and second locking portions 31 and 32 are locked in the first state at the first angle θ 1 formed by the outer peripheral surface 10c parallel to the direction of attaching and detaching the adapter 10 to and from the ceiling lamp box 3 when the first and second locking portions 31 and 32 are locked in the second state with the to-be-locked portion 122b, the locking force in the detaching direction of the first and second locking portions 31 and 32 that come into contact with the to-be-locked portion 122b is larger than the second contact surface 36a, And a locking force in a removal direction when the first locking portion 31 and the second locking portion 32 are engaged with the locked portion 122b in the second state at a second angle θ 2 formed by an outer peripheral surface 10c of the adapter 10 parallel to the removal direction of the ceiling lamp box 3.

Thereby, the lighting fixture 100 is more easily detached from the adapter 10 in the second state than in the first state. Therefore, in the first state, the vertical movement of the lighting fixture 100 with respect to the adapter 10 is suppressed, and the lighting fixture 100 can be reliably fixed to the adapter 10. Further, in the second state, it is easier to detach the lighting fixture 100 from the adapter 10 than in the first state.

In the adapter 10 of the present embodiment, the connection unit 70 is detachably provided to the connection target unit 123 of the lighting fixture 100, and is electrically connected to the connection target unit 123 of the lighting fixture 100 in the first state, and is not electrically connected to the connection target unit 123 of the lighting fixture 100 in the second state.

Thus, since the power supply to the lighting fixture 100 is performed in the first state, the user can recognize that the lighting fixture 100 and the adapter 10 are reliably electrically and mechanically connected by turning on the lighting fixture 100. In the second state, since the power supply to the lighting fixture 100 is not performed, the lighting fixture 100 is not turned on, and the user can recognize that the electrical connection and the mechanical connection between the lighting fixture 100 and the adapter 10 are incomplete. In this case, the user mounts the lighting fixture 100 to the adapter 10 to reliably fix the lighting fixture 100 to the adapter 10. As a result, the adapter 10 can easily suppress the lighting fixture 100 from falling.

The adapter 10 of the present embodiment includes a housing 20 provided with a plurality of engaging blades 51a and 52a, a connecting portion 70, and a first locking portion 31 and a second locking portion 32. Further, a second protrusion 21e is formed on the housing 20, and by rotating the lighting fixture 100 in a predetermined direction, the second protrusion 21e releases the first state in which the lighting fixture 100 is fixed to the adapter 10 and protrudes by a first amount.

For example, when the lighting fixture 100 is detached from the adapter 10, there is a case where the user continues to rotate the lighting fixture 100 without knowing the manner of detachment.

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 comes into contact with the first convex portion 124 of the lighting fixture 100 and slides, and thereby the rotational force of the lighting fixture 100 becomes a vertically downward urging force. This allows the user to recognize that the lighting fixture 100 is moving vertically downward. As a result, according to the adapter 10, the lighting fixture 100 can be safely and easily detached.

In the adapter 10 of 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 engages with the first convex portion 124 formed in the lighting fixture 100, and the first state in which the lighting fixture 100 is fixed to the adapter 10 is changed to the second state in which the lighting fixture 100 is temporarily fixed, whereby the lighting fixture 100 is temporarily fixed to the adapter 10.

This enables the lighting fixture 100 to be shifted from the first state to the second state. This can reliably suppress the lighting fixture 100 from falling.

In the lighting device 1 of the present embodiment, the holder 120 is formed with the first convex portion 124, and by rotating the lighting fixture 100 in the predetermined direction, the first convex portion 124 engages with the second convex portion 21e formed in the adapter 10, and the state of the adapter 10 fixed to the lighting fixture 100 is changed to the temporarily fixed state.

The lighting device 1 also has the same operational effects as described above.

In the lighting device 1 of the present embodiment, the lighting fixture 100 includes the light source 130, the fixture body 110 that houses the light source 130, and the holder 120 to which the adapter 10 is detachably attached. Further, the holder 120 is formed with a third projecting portion 125, and when the lighting fixture 100 is rotated in a predetermined direction, the third projecting portion 125 abuts against each of the first locking portion 31 and the second locking portion 32, and the amount of projection of the first locking portion 31 and the second locking portion 32 with respect to the outer peripheral surface 10c of the adapter 10 changes.

As a result, when the lighting fixture 100 is rotated in a predetermined direction, the first locking portion 31 and the second locking portion 32 are pressed by the third protrusion 125, and the first locking portion 31 and the second locking portion 32 move into the adapter 10. Thereby, the first state of the lighting fixture 100 and the adapter 10 is released, and the state is changed to the second state. As a result, according to the adapter 10, the lighting fixture 100 can be safely and easily detached.

(modification of embodiment)

The configuration of the adapter 10, the lighting device 1, and the lighting fixture 100 according to the present modification will be described.

Fig. 11A is a partially enlarged sectional view showing a first state in which the lighting fixture 100 of the modified example 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 of the modified example of the embodiment is normally fixed to the adapter 10.

In the present modification, the holder 120a of the lighting fixture 100 is different from the embodiment in that two engaged portions are provided.

Other structures of the present modification are the same as those of the embodiment unless otherwise specified, and the same reference numerals are assigned to the same structures, and detailed description of the structures is omitted.

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

In the first state in which the lighting fixture 100 is fixed to the adapter 10 in the normal state, the first locked portion 222a abuts against the fixing portion 35 of the locking body 33 of each of the first locking portion 31 and the second locking portion 32. More specifically, in the first state, the fourth abutment surface 222a1, which is the surface on the Z-axis negative side of the first engaged portion 222a (the surface facing the fixed portion 35), abuts against the first abutment surface 35a of the fixed portion 35.

The first engaged portion 222a is an annular projection formed on the Z-axis negative side of the second engaged portion 222b, and projects from the inner circumferential surface of the outer circumferential wall 121 so as to reduce the inner diameter of the outer circumferential wall 121. The first engaged portion 222a is formed on the inner peripheral surface of the outer peripheral wall 121 and is located between the second engaged portion 222b and the bottom portion 122 of the holder 120 a.

In the second state where the lighting fixture 100 is temporarily fixed to the adapter 10, the second to-be-locked portion 222b abuts against the temporary fixing portion 36 of the locking body 33 of each of the first locking portion 31 and the second locking portion 32. More specifically, in the second state, the third contact surface 222b1, which is the surface on the Z-axis negative side of the second engaged portion 222b (the surface facing the temporary securing portion 36), is in contact with or faces the second contact surface 36a of the temporary securing portion 36.

The second engaged portion 222b is an annular projection formed at the end edge of the outer peripheral wall portion 121 of the holder 120a on the Z-axis positive direction side, and projects from the inner peripheral surface of the outer peripheral wall portion 121 so as to reduce the inner diameter of the outer peripheral wall portion 121. The second engaged portion 222b has substantially the same diameter as the first engaged portion 222a in a plan view of the holder 120a, but may have a larger diameter than the first engaged portion 222a or a smaller diameter than the first engaged portion 222 a.

As described above, the lighting fixture 100 of the present modification is electrically connected to the ceiling lamp box 3 via the adapter 10, and includes the light source 130, the fixture body 110 that houses the light source 130, and the holder 120a that is fixed to the fixture body 110 and to which the adapter 10 is detachably attached. Further, the holder 120a is formed with a to-be-locked portion 122b that protrudes so as to approach the adapter 10 and thereby fixes the lighting fixture 100 to the adapter 10. The engaged portion 122b includes: a first locked portion 222a that locks the lighting fixture 100 to the adapter 10 by locking to a fixing portion 35 formed on the outer peripheral surface 10c of the adapter 10; and a second locked portion 222b that is engaged with the temporarily fixing portion 36 formed on the outer peripheral surface of the adapter 10, thereby temporarily fixing the lighting fixture 100 to the adapter 10. The second locked portion 222b has a third contact surface 222b1 that contacts the temporary fixation portion 36 when the lighting fixture 100 is temporarily fixed to the adapter 10.

In this modification as well, the same operational effects as those of the embodiment are obtained.

(other modifications, etc.)

While the embodiments and the modifications of the embodiments have been described above, the present invention is not limited to the embodiments and the modifications of the embodiments.

For example, the lighting device and the lighting fixture described in the above embodiments and the modifications of the embodiments are examples, and specific forms of the lighting device and the lighting fixture are not particularly limited. The lighting device and the lighting fixture may be in any form as long as they are connected to the ceiling lamp box base using the adapter.

In the adaptor, the lighting device, and the lighting fixture described in the above embodiments and modifications of the embodiments, the plurality of locking portions may be 1 member integrated.

In the adapter, the lighting device, and the lighting fixture described in the above embodiments and the modifications of the embodiments, the connection portion of the adapter is concave, but may be convex. That is, the other end of the third terminal and the other end of the fourth terminal of the connecting portion may protrude from the first insertion port and the second insertion port. 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 connection portion of the adaptor may be a male type connection portion, and the power supply portion of the socket may be a female type connection portion. That is, in the adapter, the first power supply terminal and the second power supply terminal of the lighting fixture are convex terminals extending in the attaching and detaching direction, and the first power supply portion and the second power supply portion of the adapter are concave power supply portions into which the first power supply terminal and the second power supply terminal are inserted, but the first power supply terminal and the second power supply terminal of the lighting fixture may be concave terminals extending in the attaching and detaching direction, and the first power supply portion and the second power supply portion of the adapter may be convex power supply portions into which the first power supply terminal and the second power supply terminal are inserted.

The specific form of the ceiling light box base is not particularly limited. As the ceiling lamp terminal base, a circular full-suspended ceiling lamp terminal box, a circular ceiling lamp terminal box, a square ceiling lamp terminal box, a buried ceiling lamp terminal box, an exposed ceiling lamp terminal box, and the like are used.

In addition, the present invention includes a configuration in which various modifications that may occur to those skilled in the art are applied to the embodiment and the modified examples of the embodiment, and a configuration in which the constituent elements and functions of the embodiment and the modified examples of the embodiment are arbitrarily combined without departing from the scope of the present invention.

Description of the reference symbols

1 Lighting device

3 ceiling lamp line box

10 adapter

10a surface

10b back side

10c outer peripheral surface

20 casing

21e second projection

31 first stop part (stop part)

32 second stop part (stop part)

51a and 52a clamping and hanging blade

70 connecting part

70a first power supply part

70b second power supply part

100 Lighting appliance

110 main body of the apparatus

120. 120a holder

122b locked part

122b1 abutment surface

123 connected part

123a first power supply terminal

123b second power supply terminal

124 first convex part

125 third projection

130 light source

Claims (13)

1. An adapter for electrically and mechanically connecting a ceiling rose box to a lighting fixture,

the disclosed device is provided with:

a plurality of engaging blades detachably fixed to the ceiling lamp box to which power is supplied; and

a connecting portion provided on a back surface of the adapter opposite to a surface on which the plurality of engaging blades are provided, the connecting portion being electrically connected to the plurality of engaging blades and supplying power to the lighting apparatus;

the connecting part comprises:

a first power supply unit electrically connected to a first power supply terminal provided in the lighting fixture; and

and a second power supply unit electrically connected to a second power supply terminal provided in the lighting fixture so as to surround the first power supply terminal.

2. The adapter of claim 1,

the first power supply terminal and the second power supply terminal of the lighting apparatus are convex terminals extending in a mounting and dismounting direction, and the first power supply portion and the second power supply portion of the adapter are concave power supply portions into which the first power supply terminal and the second power supply terminal are inserted;

alternatively, the first power supply terminal and the second power supply terminal of the lighting fixture may be concave terminals extending in a mounting/dismounting direction, and the first power supply portion and the second power supply portion of the adapter may be convex power supply portions inserted into the first power supply terminal and the second power supply terminal.

3. The adapter of claim 1 or 2,

the second power supply portion is disposed concentrically around the first power supply portion.

4. The adapter of claim 1 or 2,

the lighting fixture comprises more than 1 clamping part which can freely protrude from the outer peripheral surface of the adapter in an advancing and retreating way and fix the lighting fixture to the adapter;

when the lighting fixture is fixed to the adapter, the 1 or more locking portions each come into a first state of protruding by a first amount from the outer peripheral surface of the adapter.

5. The adapter of claim 4,

when the lighting fixture is temporarily fixed to the adapter, the 1 or more locking portions are in a second state protruding from the outer peripheral surface of the adapter by a second amount smaller than the first amount.

6. The adapter of claim 5,

when the adapter is cut by a plane including a central axis of the adapter and parallel to a direction of attaching and detaching the adapter to and from the ceiling lamp box, when the 1 or more locking portions lock the to-be-locked portion of the lighting fixture in the first state, a locking force in a detaching direction in which the 1 or more locking portions lock the to-be-locked portion in the first state at a first angle formed by first abutting surfaces of the 1 or more locking portions abutting against the to-be-locked portion and the outer peripheral surface parallel to the direction of attaching and detaching the adapter to and from the ceiling lamp box is larger than a locking force in a detaching direction in which the 1 or more locking portions lock the to-be-locked portion in the first state, and a second abutting surface of the 1 or more locking portions abutting against the to-be-locked portion and the outer peripheral surface parallel to the direction of attaching and detaching the adapter to and from the ceiling lamp box when the 1 or more locking portions are engaged with the to-be-locked portion in the second state And a locking force in the detaching direction when the 1 or more locking parts are locked with the locked part in the second state under the angle.

7. The adapter of claim 5,

the above-mentioned connecting portion can be used for connecting the connecting portion,

is detachably provided to the connected portion of the lighting fixture,

electrically connected to the connected portion of the lighting fixture in the first state,

and is not electrically connected to the connected portion of the lighting fixture in the second state.

8. The adapter of claim 5,

a housing provided with the plurality of engaging blades, the connecting portion, and the 1 or more engaging portions;

a second projection is formed on the housing, and when the lighting fixture is rotated in a predetermined direction, the second projection releases the first state in which the lighting fixture is fixed to the adapter and projects by the first amount.

9. The adapter of claim 8,

when the first state in which the lighting fixture is fixed to the adapter is released, the second projection engages with a first projection formed on the lighting fixture, the first state in which the lighting fixture is fixed to the adapter is changed to the second state in which the lighting fixture is temporarily fixed, and the lighting fixture is temporarily fixed to the adapter.

10. A lighting device is characterized in that a lamp body is provided,

the disclosed device is provided with:

the adapter of any one of claims 1-9; and

and a lighting fixture electrically connected to the adapter.

11. The illumination device of claim 10,

the lighting fixture includes:

a light source;

an instrument body for accommodating the light source; and

a holder to which the adapter is detachably attached;

the holder is formed with a third projecting portion which, when the lighting fixture is rotated in a predetermined direction, abuts against each of the 1 or more locking portions, thereby changing the amount of projection of the 1 or more locking portions with respect to the outer peripheral surface of the adapter.

12. The illumination device of claim 11,

a first convex portion is formed on the holder, and when the lighting fixture is rotated in a predetermined direction, the first convex portion engages with a second convex portion formed on the adapter, thereby shifting the adapter fixed to the lighting fixture to a temporarily fixed state.

13. A lighting fixture electrically connected to a ceiling lamp box via an adapter,

the disclosed device is provided with:

a first power supply terminal provided on a holder fixed to the lighting fixture and to which the adapter is detachably attached, and connected to the first power supply portion of the adapter; and

and a second power supply terminal provided so as to surround the first power supply terminal and connected to the second power supply portion of the adapter.

Images