JPH02242510A - Luminaire - Google Patents

Abstract

PURPOSE:To make it possible to rotate a lamp body through more than 360 degrees by providing a rotary mechanism to an arm mounting portion for either one of base lamp bodies, and providing the rotary mechanism with an insertion portion for the end of either one of arms, and a through hole allowing the insertion portion to be locked and loosely engaged therewith, and first and second stoppers. CONSTITUTION:An arm 2 mounting portion for at least either one of a base and a lamp body 3 is provided with a rotary mechanism 4. As the rotary mechanism 4, an insertion portion 7 having a stepped portion 6 at the end of the arm 2, and a through hole 8 formed through a mounting portion 5 and allowing the insertion portion 7 to pass therethrough and also allowing an insertion portion 7 to be locked and loosely engaged therewith at the stepped portion 6, are provided. A first stopper 9 having a first protrusion and loosely engaged with the insertion portion 7, and a second stopper 10 having a second protrusion 13 and fixed at the end of the insertion portion 7 and making the second protrusion 13 abut against the first protrusion according to its rotation, are provided. The first protrusion 12 is locked according to rotation of the first stopper 9, so that rotation of the first stopper 9 is regulated. It is thus made possible to rotate the lamp body through more than 360 degrees.

Description

[Detailed Description of the Invention] [Object of the Invention] (Industrial Field of Application) The present invention relates to a lamp in which a lamp body is attached to the tip of an arm provided on a base so as to be rotatable about the axis of the arm. This invention relates to a lighting device that allows the body to rotate more than 360 degrees.

(Prior Art) As a lamp in which a lamp body provided on an arm is rotatable, for example, the lamp described in Japanese Utility Model Application Publication No. 62-71812 is known. In this case, by making the attachment part of the arm to the base rotatable, the lamp body can be freely rotated through the arm. A protrusion (claw piece 7) provided on the arm side allows the lamp body to rotate within a certain range.

(Problem to be Solved by the Invention) In the case of the above conventional example, as a result of the projection restricting the range in which the lamp body rotates, the lamp body cannot rotate due to the thickness of the projection, and the put point is inevitably reached. There are some directions that cannot be irradiated.

The present invention aims to eliminate the above-mentioned drawbacks and provides a lighting fixture equipped with a rotation mechanism capable of rotating a lamp body by 360 degrees or more.

[Structure of the Invention] (Means for Solving the Problems) The present invention provides a rotation mechanism in the arm mounting section (-J section) for at least one of the base and the lamp body, and this rotation mechanism is provided at one end of the arm. an insertion portion having a stepped portion formed in;
an insertion hole that is formed in the attachment part, that penetrates the insertion part, locks the insertion part in the stepped part, and loosely fits the insertion part; and a first protrusion. , which has a first stopper that loosely fits into the insertion part inside the insertion hole and a second protrusion, and is fixed to the end of the insertion part outside or inside the first stopper. , a second stopper that brings the second protrusion into contact with the first protrusion in response to rotation;
and a stopper portion that restricts rotation of the first stopper by locking the first protrusion in response to rotation of the stopper.

In the present invention, one end of the arm is the side that is attached to the base (=1), and the other end of the arm is the side that supports the lamp, and is not necessarily specified as a rod-shaped object.For example, as an arm may be arch-shaped as in the conventional example.In this case, the central portion supported by the base is one end of the arm, and the ends of both legs supporting the lamp are the other end of the arm. becomes.

Further, the position of the second stopper fixed to the insertion portion with respect to the first stopper loosely fitted to the arm is the same as that of the first stopper.
This includes both inside and outside of the stopper.

(Function) Since the first stopper is loosely fitted into the insertion portion and is free, if the lamp body is rotated, it will rotate together with the lamp body.

By further continuing the rotation, the first protrusion comes into contact with the second protrusion of the second stopper. Thereafter, the lamp body is further rotated, and since the second stopper is fixed to the arm, the first stopper, second stopper, and arm rotate together with the above rotation. Eventually, the first protrusion of the first stopper is stopped by a stopper part provided on the mounting part, and rotation is regulated, and accordingly, the rotation of the lamp body is completed. As for the rotation angle of the lamp body, after the rotation of the second stopper is regulated by the first stopper, the first stopper continues to rotate until its rotation is regulated by the stopper part of the mounting part.
Since the rotation angle range of the first stopper can be easily set to be greater than the thickness range of the second stopper, the lamp body can be rotated more than 360 degrees around the axis of the arm, and there is no direction that cannot be irradiated. You can freely set the lighting direction of the lamp anywhere.

(Example) Hereinafter, details of the present invention will be explained with reference to the drawings.

] is a base, 2 is an arm whose one end is attached to the base 1, 3 is a lamp body numbered F at the other end of the arm, and 4 is a rotating mechanism. This rotation mechanism 4 includes a base 1 and a lamp body 3.
provided on the attachment part 5 of the am 2 for at least one of the
This allows the lamp body 3 to rotate around the axis of the arm 2. Further, this rotation mechanism 4 includes an insertion portion 7 having a stepped portion 6 formed at at least one end of the arm 2;
An insertion hole 8 formed in the mounting portion 5 and a first stopper 9
, a second stopper 10 , and a stopper portion 11 formed on the attachment portion 5 . The insertion hole 8 is the insertion part 7
is passed through the step part 6, and the insertion part 7 is locked at the stepped part 6, so that the insertion part 7 is loosely fitted. The first stopper 9 has a first protrusion 12 and is loosely fitted into the insertion portion 7 inside the insertion hole 8 . The second stopper 10 has a second protrusion 13, is fixed to the insertion part 7 on the outside or inside of the first stopper 9, and rotates to move the second protrusion 13 to the first protrusion 12. I'm trying to make it come into contact with. Moreover, the stopper part 11 is
The rotation of the first stopper 9 is restricted by locking the second protrusion 12 according to the rotation of the first stopper 9 .

Next, to explain the above embodiment in more detail, the lamp body 3
This includes a main body 21 having a lamp 20, a cylindrical body that covers the lamp attached to the main body 21, and a reflector 23 provided inside the cylindrical body 22 to face the lamp 20. Also, 2
4 is a translucent cover provided at the opening 25 of the cylindrical body 22;
26 is a back cover provided at the rear of the main body 20. The main body 20 is provided with a socket sabot 1.27, and a socket 28 to which a lamp 20 is mounted is attached to this sabot 27. The arm 2 is connected by a hinge mechanism 31 having a protrusion 29 on the back side of the main body 21 and a shaft 30 inserted through the protrusion 29, that is, a tapping screw, through the handle portion 5 supported by the hinge mechanism 31. It is supported rotatably in the vertical direction. 32 is a fixing plate into which the U-shaped screw 30 is inserted. This attachment part 5 is formed in a semicylindrical shape, and the insertion part 7 and the first and second stoppers 9 and 10 are arranged inside this, and by cutting out the center of the - side edge, A stopper portion 11 is provided. and the first stopper 9
The protrusion 12 of the second stopper has a length that is locked to the stopper part 11, and the protrusion 13 of the second stopper is bent toward the first protrusion 12, thereby being locked to the first protrusion 12. .

Next, the operation of the above embodiment will be explained. Assuming that the rotation mechanism 4 is provided only on the lamp body 3 side of the arm 2, when the lamp body 3 is rotated, the second stopper 10 fixed to the arm 2 rotates together with the arm. To explain with reference to the figure, this rotation is to the right in the figure. At this time, the first stopper 9 also moves to the second stopper 10 due to friction.
rotates with Since the first stopper 9 is free with respect to the arm 2, the first protrusion 12
1, rotation of the first stopper 9 is restricted. As a result, the second stopper 10
The second protrusion 13 rotates together with the arm 2, and this rotation continues until the second protrusion 13 is engaged with the right side of the first protrusion 12 in the figure, as shown by the dotted line. The rotation of the second stopper 10 is stopped. As a result, as shown by the arrow, the arm 2, that is, the lamp body 3 can rotate within the range of angles including both the rotation angle by the first stopper 9 and the rotation angle by the second stopper 10, The irradiation direction can be set over a wide range of 360 degrees or more, and therefore the lamp body 3 can be freely oriented in any direction without a dead point.

In addition, when the position of the second stopper 10 fixed to the insertion part 7 is inside the first stopper 9, the cutting direction of the second protrusion 13 is set to the first stopper 9 side, 1st
Of course, the stopper 9 must be brought into contact with the first protrusion 12 during rotation.

Moreover, although the rotating mechanism 4 is provided on the lamp body 3 side in the above embodiment, it may be provided on the base 1 side. Further, it may be provided on both the lamp body 3 side and the base 1 side.

Further, the lamp body 3 is not only rotated in the horizontal plane by the rotation mechanism 4, but also can be rotated in the vertical direction by making the mounting part 5 rotatable by the hinge mechanism 3. There is. However, in the case of an instrument whose orientation in the vertical direction is always constant and does not require rotation in the vertical direction, the mounting portion 5 does not need to be rotatable.

[Effects of the Invention] As described in detail above, the present invention provides a rotation mechanism in the arm attachment portion for at least one of the base and the lamp body, and this rotation mechanism is provided with a step portion formed at one end of the arm. an insertion hole formed in the mounting portion to allow the insertion portion to pass through the insertion portion, lock the insertion portion at the stepped portion, and loosely fit the insertion portion; a first stopper that loosely fits into the insertion part on the inside of the insertion hole, and a second projection that fits loosely into the insertion part on the outside or inside of the first stopper. a second stopper that is fixed to the end portion and brings the second protrusion into contact with the first protrusion in response to rotation; and a stopper that restricts rotation of the first stopper by locking the first protrusion.

Therefore, according to the present invention, as explained in the above operation, the lamp body changes the rotation angle by the first stopper,
Both rotation angles due to the second stopper are added to 3
It is possible to rotate within an angle range of 60 degrees or more,
Therefore, the illumination direction of the lamp body can be freely directed in any direction without being subject to any restrictions.

[Brief explanation of drawings]

The figures show one embodiment of the present invention, with Figure 1 being a side sectional view and Figure 2 being a side sectional view.
The figure is a side sectional view of the main part, Fig. 3 is a top view of the main part, and Fig. 4 is an exploded perspective view of the main part.1...Base, 2...Arm, 3...Lamp body,
4... Rotating mechanism, 5... Mounting part, 6... Step part, 7... Insertion part, 8... Insertion hole, 9... First stopper 10... Second Stopper 11... Stopper portion, 12... First protrusion, 1
3...Second protrusion.

Claims (1)

[Claims] A base; an arm having one end attached to the base; a light body attached to the other end of the arm; and a rotation mechanism that allows rotation of the lamp body around the axis of the arm; the rotation mechanism includes an insertion portion having a stepped portion formed at at least one end of the arm. and an insertion hole formed in the mounting part, through which the insertion part passes through, and which locks the insertion part in the stepped part and into which the insertion part is loosely fitted, and a first protrusion. and has a first stopper that loosely fits into the insertion part inside the insertion hole, and a second protrusion,
a second stopper that is fixed to the insertion portion on the outside or inside of the first stopper and causes the second protrusion to contact the first protrusion in response to rotation; formed on the attachment portion; By locking the first protrusion in accordance with the rotation of the first stopper, the first
A lighting fixture comprising: a stopper portion that regulates the rotation of the stopper;