JPS6236183Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a lighting device, and its purpose is to provide a simple structure that allows the lighting direction of the lighting device to be varied over a wide range and prevents the lead wire from twisting when the lighting device is rotated. It's about doing.

FIGS. 1 to 3 show a conventional example, and the overall appearance is as shown in FIG. 1, which is a lighting fixture that also has a substantially cylindrical shape and a built-in lamp 20 mounted on a mounting base 2 that has a substantially cylindrical shape and is attached to a ceiling 1. Both ends of the lamp 3 are rotatably attached via a rotation attachment unit 30, and the lamp 3 can be rotated about its central axis to change the direction of irradiation.

The mounting base 2 and the light fixture 3 are as shown in FIG.
The mounting base 2 has a substantially semi-cylindrical shape with an open bottom and has a base plate 6 integrally molded therein so as to bridge the walls on both sides, and legs 4 attached to the ceiling 1 are attached to the back.
The open lower surface is covered with a detachable cover 5.
The light fixture 3 has a cross-sectional shape similar to the mount 2, and has a substantially semi-cylindrical shape with an open bottom surface in which a board (not shown) is integrally molded inside so as to bridge the walls on both sides, and the open bottom surface is a light projection window of the lamp 20. It is covered with a removable cover 21 equipped with. Note that a power lead wire (not shown) of the lamp 3 is introduced into the mounting base 2 and connected to a power wire passing through the leg 4.

The mounting base 2 and the lamp 3 were mounted by a rotary mounting unit 30 as shown in FIGS. 2 and 3. The rotary mounting unit 30 is fixed by caulking one end of a shaft 8 to a substantially L-shaped fixing plate 7.
The tip of the shaft 8 is rotatably inserted through a bearing plate 10, and a stopper 9 is fixed to the tip of the shaft 8 by caulking the shaft 8 through the bearing plate 10. The stopper 9 is provided with a projecting piece 11, and the bearing plate 10 is provided with a cut-out pawl 12 that engages with the protrusion piece 11. When the bearing plate 10 rotates approximately once around the shaft 8, the cut-out pawl 12
engages with the protruding piece 11 and rotation is prevented.

Thus, the fixing plate 7 is screwed to the lower surface of the base plate 6 of the mounting base 2 with the cover 5 removed, and the bearing plate 10 is similarly attached to the lower surface of the board 6 of the lamp 3 with the cover 21 removed. It is attached by screwing it to the underside of the .

In this way, the power lead wire introduced from the light fixture 3 into the mounting base 2 is twisted by the rotation of the light fixture 3, but the cutting claw 12 engages with the protrusion 11 to restrict the range of rotation. Damage due to torsion is prevented.

However, in such a conventional device, one rotation (360
This has the disadvantage that it can only be rotated within a smaller angular range (degrees), which limits the irradiation direction of the lamp 2.

The present invention has been devised in view of the above points, and will be explained below based on the drawings.

4 to 7 show an embodiment of the present invention, and the overall appearance of the lighting equipment according to this embodiment is as shown in FIG.
The structures of the mounting base 2 and the lamp 3 are the same as those shown in FIG. 2, and are omitted from illustration.
Only the above is shown. Rotating mounting unit 3
0 has bearing plates 10 and 1 at both ends of the rotating shaft 8, respectively.
0' so as to be rotatable, and its bearing plates 10, 1
0' is inserted through the rotary shaft 8, and stoppers 9, 9' are fixed to the tip by caulking.

The bearing plates 10, 10' are substantially L-shaped plates, and the base piece 15 has a mounting hole formed therein, and the vertical piece 13 has a shaft hole 14 and a raised pawl 12 formed therein. The rotating shaft 8 has a hollow cylindrical shape, and a small diameter stopper step 16 and a bearing plate step 17 are sequentially formed at both ends. The stopper 9 has two protrusions 11, 11' around its circumference.
It is a ring-shaped plate provided with. The rotating shaft 8 has small-diameter bearing plate steps 17 at both ends connected to the bearing plates 10 and 1.
The stopper 9 is inserted rotatably into the shaft hole 14 of
After inserting the stopper 9, 9', the tip of the rotating shaft 8 is caulked to fix the stopper 9, 9' to the rotating shaft 8. In this state, the bearing plates 10, 10' are rotatable between the stoppers 9, 9' and the bearing plate stepped portion 17 of the rotary shaft 8.

The rotating mounting unit 30 constructed as described above is mounted on the mounting base 2 and lamp 3 similar to those shown in FIGS. 1 and 2 in the same manner as in the conventional example. That is, the bearing plate 10' is attached by screwing the root piece 15 to the lower surface of the base plate 6 of the mounting base 2 with the cover 5 removed.
In the state in which the lamp is removed, it is attached to the lower surface of the not-illustrated board of the lamp 3 by screwing in the same manner.

In the lighting fixture constructed as described above, the direction of irradiation can be changed by rotating the lamp 3, and at this time the rotating mounting unit 30 operates as shown in FIGS. 6 and 7. From the case where the irradiation direction of the lamp 3 is directed directly downward as shown in Fig. 1 (Fig. 6a, Fig. 7a), to the case where the lamp 3 is rotated to the left when viewed from the left in Fig. 1 (Fig. 6a, Fig. 7a) 6b) Either bearing plate (mounting base 2 in the figure)
The side bearing plate 10') and the rotating shaft 8 stand still together, and the other bearing plate (in the figure, the bearing plate 10' on the lamp 3 side) and the rotating shaft 8 stand still together.
0) rotates around the rotating shaft 8, the cut-and-raise pawl 12 engages with one protruding piece 11 of the stopper 9 (Fig. 6b), and then further rotates while rotating the rotating shaft 8 together (6th Figure c), one protrusion 11 of the stopper 9' on the other end side of the rotating shaft 8 is connected to the bearing plate 1 on the mounting base 2 side.
It engages with the cut-and-raise pawl 12 at 0' and is prevented from rotating (FIG. 6d). In this state, the lamp 3 rotates half a turn (180
(degree) or more. Contrary to the above, the same applies when rotating the lamp 3 to the right when viewed from the left in FIG. 1 as shown in FIG. 7. In this case, the stopper 9,
The protruding piece 11' of 9' engages with the cut-and-raise pawl 12, rotates more than half a turn, and is prevented from rotating. In this way,
Can rotate more than half a turn to the left and right,
After all, the lamp 3 can be completely rotated by more than one rotation.

When setting the range of rotation, the distance between the two protrusions 11, 11' of the stoppers 9, 9' may be appropriately set.

As described above, the present invention provides stoppers 9, 9' at both ends of the rotating shaft 8, rotatably attaches bearing plates 10, 10', and engages the stoppers 9, 9' with the bearing plates 10, 10'. The stoppers 9, 9' and the cut-out claws 12 form the lamp 3.
Since the lamp and the mounting base are rotatably mounted using the rotary mounting unit 30, which is configured to be rotatable at least half a turn in both clockwise and counterclockwise directions, the lamp 3 can rotate in the direction of irradiation. It can be changed completely in one rotation and can be used for a wide range of illumination. Of course, it is possible to prevent the lamp 3 from rotating beyond a certain angle and prevent damage due to twisting of the lead wire.

[Brief explanation of the drawing]

Figures 1 to 3 show a conventional example. Figure 1 is an external perspective view, Figure 2 is an exploded perspective view of the mounting base, the light fixture, and the mounting part of the rotating mounting unit, and Figure 3 is the rotating mounting unit. FIG. 4 to 7 show a rotating mounting unit according to an embodiment of the present invention, FIG. 4 is an exploded perspective view, FIG. 5 is a sectional front view,
FIG. 6 is a perspective view illustrating the operation in case of left rotation;
FIG. 7 is a perspective view illustrating the operation in case of clockwise rotation. 2...Mounting stand, 3...Light fixture, 8...Rotating shaft,
9, 9'... Stopper, 10, 10'... Bearing plate, 11, 11'... Protruding piece, 12... Cutting claw.

Claims (1)

[Scope of utility model registration request] In a lighting fixture with a variable irradiation direction, in which both ends of the lamp are rotatably attached to a mounting base using a rotary mounting unit, the rotary mounting unit has a stopper at both ends of the rotating shaft and a rotating bearing plate. The bearing plate is provided with a raised pawl that engages with the stopper, and the stopper and the raised pawl have shapes that allow the lamp to rotate at least half a turn in both clockwise and counterclockwise directions. 1. A lighting device comprising: each bearing plate of the rotary mounting unit is attached to a light fixture and a mounting base, respectively, and the light fixture and the mounting base are rotatably mounted.