JPH1012033A - Luminaire - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the breakaway of a fitting, and allow no deformation of a fall-out preventive fixture by blocking the recessed portion of a luminaire main body with the fall-out preventive fixture, and supporting the luminaire main body with a support step in a state where the installation of the luminaire main body is completed so that no external force is applied to the fall-out preventive fixture. SOLUTION: A fall-out preventive fixture 3 is caused to intervene between a fitting piece 7 interposed in a recessed portion 5 and a luminaire main body 1 so as to block the recessed portion 5 to prevent the breakaway of the fitting. The fall-out preventive fixture 3 is formed of approximately C-shaped sheet material which is cut away with a spacing 23. Thereby, such strength is maintained as the luminaire main body 1 can be supported at a fitting operation time. In a state where the installation of the luminaire main body 1 is completed, the luminaire main body 1 is supported with a support step 8 so that no external force is applied to the fall-out preventive fixture 3 to allow no occurrence of the deformation of the fall-out preventive fixture 3. Since a cutout is formed in the fall-out preventive fixture 3, the insertion operation thereof between the luminaire main body 1 and the fitting piece 7 becomes easy, and since the cutout spacing 23 is formed, the mutual overlapping of cutout end faces is prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lighting fixture.

[0002]

2. Description of the Related Art FIGS. 7 to 9 show a conventional example. That is, the lighting fixture has the mounting hole 70 and the mounting hole 70.
An instrument body 72 having a concave portion 71 formed at an edge of
The mounting portion 74 has a cylindrical portion 73 that fits into the mounting hole 70, and the mounting portion 74 is inserted into the concave portion 71.
And a mounting member 76 having a support step 75 for supporting the edge of the mounting hole 70 in the tubular portion 73 in a state where the mounting piece 70 is inserted through the mounting piece 7.
4 is provided on the support step 75 side, and a main body protruding part 78 is provided on both sides in the circumferential direction of the concave portion 71 of the mounting hole 70 of the instrument main body 72, and the mounting tool protruding part 77 gets over the main body protruding part 78. As a result, the attachment 76 was prevented from coming off.

[0003]

However, when a large rotational force is applied to the fixture 76, the main body projecting portion 78 and the fixture projecting portion 77 collide with each other and break, and the fixture 76 is detached from the instrument main body 72. There was a disadvantage. In addition, the free rotation of the attachment 76 was suppressed to the range indicated by the arrow shown in FIG.

Accordingly, it is an object of the present invention to provide a lighting fixture which can prevent the fixture from being detached and can freely rotate the fixture.

[0005]

According to a first aspect of the present invention, there is provided a lighting apparatus comprising:
An appliance main body having a mounting hole and a concave portion formed at an edge of the mounting hole, and a mounting portion having a cylindrical portion fitted in the mounting hole and having a mounting piece inserted in the concave portion in the cylindrical portion; A mounting member having a support step in the cylindrical portion for supporting an edge of the mounting hole in a state in which a piece is inserted into the concave portion, and a mounting member interposed between the mounting piece inserted into the concave portion and the device main body; And a stopper for stopping the mounting piece by closing the recess.

According to the first aspect of the present invention, since the recess of the fixture body is closed by the stopper, the detachment of the fixture can be prevented. Further, since there is no conventional projection, the projection is not damaged by the rotation of the fixture, and the rotation range of the fixture is not limited. The lighting device of claim 2 is the lighting device of claim 2.
Wherein the retaining member is a substantially C-shaped sheet material separated at intervals.

According to the lighting apparatus of the second aspect, in addition to the effects of the second aspect, the fixture body is supported by the supporting step in a state where the fixture body is completely attached, so that no external force is applied to the stopper, and the lighting fixture is removed. The stopper does not deform. By making a cut in the stopper, the insertion operation between the instrument body and the mounting piece is easy, and by providing the cut interval, the cut end faces can be prevented from overlapping each other.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to FIGS. That is, this lighting fixture
It has an instrument body 1, an attachment 2, and a stopper 3. The instrument body 1 has a mounting hole 4 and a concave portion 5 formed at an edge of the mounting hole 4. In the embodiment, the device main body 1
As shown in FIG. 3, a substantially disc-shaped peripheral wall 9 is provided at the peripheral edge, a concave step 10 is provided at the center, and a central step is provided at the center of the concave step 10. 11, and a substantially circular mounting hole 4 is formed in the central step portion 11. The concave portion 5 is composed of concave portions 5a to 5c having different widths and depths sequentially at three locations in the circumferential direction of the mounting hole 4. 12 is a lamp holder, 1
3 is a lamp support spring, and 14 is a glove holder.

The mounting fixture 2 has a cylindrical portion 6 fitted into the mounting hole 4, has a mounting piece 7 inserted into the concave portion 5 in the cylindrical portion 6, and has the mounting piece 7 inserted into the concave portion 5. The cylindrical portion 6 has a supporting step 8 for supporting the edge of the mounting hole 4. In the embodiment, the fixture 2 has a cylindrical shape composed of an outer cylinder 2a and an inner cylinder 2b, between which the movable cylinder 2c is movably fitted and a spring 25 is used.
(See FIGS. 5 and 6). Reference numeral 26 denotes a locking claw that slidably locks the vertical groove 27 of the inner cylinder 2b, and the movable cylinder 2c is movably attached to the inner cylinder 2b. Inner cylinder 2
A substantially L-shaped groove 15 is formed in the inner peripheral surface of b in the axial direction. ing. Mounting piece 7
Are formed at the upper end of the cylindrical portion 6, but radially form mounting pieces 7a to 7c whose widths and projecting amounts are sequentially changed in accordance with the widths and the depths of the recesses 5a to 5c. Can be inserted through the recess 5a, the mounting piece 7b can be inserted through the recess 5b,
The mounting piece 7c can be inserted through the recess 5c.

On the other hand, the hanging ceiling body 1 of the ceiling 16
A projection 20 is formed on the peripheral surface of an adapter 19 having a hooking sealing cap 18 that hooks on the adapter 7. When the inner cylinder 2 b of the fixture 2 is inserted into the adapter 19, the projection 20 is passed through the groove 15 to form a lateral groove of the groove 15. The attachment 2 is attached to the adapter 19 by being hooked on the hook 21.
Reference numeral 22 denotes a hook claw provided on the hook sealing cap 18 and hooked on the hook sealing body.

The retaining member 3 is interposed between the mounting piece 7 inserted into the concave portion 5 and the instrument body 1 to close the concave portion 5 to prevent the mounting piece 7 from being removed. In the embodiment, the retaining member 3 is formed of a substantially C-shaped sheet material separated at intervals 23. It is formed by punching a thin elastic plate such as an elastically deformable film into a substantially annular shape and cutting a part of the elastic plate so as to form a C-shape with an interval 23 therebetween. With the strength to support. Therefore, the fixture main body 1 can be lifted by gripping the fixture 2, and workability when the fixture 1 is attached to the ceiling 16 can be improved.

To explain the assembling, the tool main body 1, the mounting tool 2 and the stopper 3 are placed in the positional relationship as shown in FIG. The mounting fixture 2 is rotated while the edge of the mounting hole 4 is in contact with the supporting step 8 and the mounting piece 7 is locked to the apparatus main body 1 to prevent the mounting hole 4 from coming off. In this state, as shown in FIG. 2, the retaining member 3 is turned as shown by the arrow while one end thereof is hung on the mounting piece 7, and inserted into the cylindrical portion 6 between the mounting piece 7 and the instrument body 1 to mount the concave portion 5. The piece 7 is closed.

Next, when the apparatus main body 1 is mounted on the ceiling 16, an adapter 19 is attached to the mounting fixture 2 mounted on the apparatus main body 1.
And the projection 20 is passed through the groove 15 to be inserted and rotated and locked. At this time, by interposing an intervening object (not shown) between the peripheral edge of the instrument body 1 and the ceiling 16, the instrument body 1 is locked and supported on the supporting step 8 of the fixture 2 without play.

According to this embodiment, since the concave portion 5 of the instrument body 1 is closed by the stopper 3, the detachment of the fixture 2 can be prevented. In addition, since there is no conventional protrusion, the protrusion is not damaged by the rotation of the fixture 2, and the rotation range of the fixture 2 is not limited, so that the fixture 2 can rotate 360 degrees. In the state where the attachment of the instrument body 1 is completed, the instrument body 1 is supported by the supporting step 8, so that no external force is applied to the stopper 3 and the stopper 3 is not deformed. By making a cut in the stopper 3, the insertion operation between the instrument body 1 and the mounting piece 7 is easy, and the cut interval 23 is set.
By providing the above, overlapping of the cut end faces can be prevented.

[0015]

According to the lighting apparatus of the first aspect, since the recess of the apparatus main body is closed by the stopper, the detachment of the fixture can be prevented. Further, since there is no conventional projection, the projection is not damaged by the rotation of the fixture, and the rotation range of the fixture is not limited. According to the lighting fixture of claim 2,
In addition to the effect of the second aspect, when the mounting of the tool main body is completed, the tool main body is supported by the supporting step, so that no external force is applied to the stopper and the stopper does not deform. By making a cut in the stopper, the insertion operation between the instrument body and the mounting piece is easy, and by providing the cut interval, the cut end faces can be prevented from overlapping each other.

[Brief description of the drawings]

FIG. 1 is a sectional view of a main part of an embodiment of the present invention.

FIG. 2 is an explanatory diagram of a state in which a retaining device is mounted.

FIG. 3 is a perspective view of a state before mounting of a mounting tool.

FIG. 4 is a plan view of the retaining device.

FIG. 5 is a perspective view showing a state before attaching a fitting to an adapter.

FIG. 6 is an exploded perspective view of the attachment.

FIG. 7 is a sectional view of a conventional example.

FIG. 8 is a perspective view showing a state before the attachment is attached.

FIG. 9 is an explanatory diagram showing a rotation range of a fixture.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Instrument main body 2 Mounting tool 3 Retainer 4 Mounting hole 5 Depression 6 Cylindrical part 7 Mounting piece 8 Supporting step 23 Interval

Claims (2)

[Claims] 1. An appliance body having a mounting hole and a concave portion formed at an edge of the mounting hole, and a mounting portion having a cylindrical portion fitted in the mounting hole and being inserted into the concave portion, the mounting portion is connected to the cylindrical portion. A mounting tool having a supporting step in the cylindrical portion for supporting an edge of the mounting hole in a state where the mounting piece is inserted into the recess, the mounting piece and the appliance body inserted into the recess. And a stopper interposed between the stopper and the stopper to close the recess so as to prevent the attachment piece from coming off. 2. The luminaire according to claim 1, wherein said retaining member is a substantially C-shaped sheet material separated at intervals.