JP2009245617A - Lighting fixture - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lighting fixture capable of turning a lighting tool, using a simple structure and stopping it at an arbitrary angle and reducing the number of components. <P>SOLUTION: A lighting body 23 can be fixed on an arm 21 at a desired turning angle, since an elastic body 32 is arranged on a turning section 30 that rotatably supports the lighting body 23 on the arm 21, and the friction force for fixing the arm 21 and the lighting body 23 is generated, by outward urging force generated by the elastic body 32. Furthermore, the lighting body 23 can be turned to a desired angle, by making the friction force reduce, since the urging force of the elastic body 32 is reduced by an operation lever 31. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a lighting fixture that can change an irradiation direction.

Conventionally, there has been proposed a lighting fixture that can change the irradiation direction by changing the direction of the lamp supported by the arm (see, for example, Patent Document 1).
As shown in FIG. 6, a lighting apparatus 100 described in Patent Document 1 is a bed ride provided on a bedside of a hospital or the like, and is attached to a bedside mounting base or the like, and an arm 101 whose angle and direction can be adjusted. A lamp 103 is attached to the tip of the arm 101 via a joint 102. The joint 102 is rotatable in the X direction and the Y direction, and the rotation of the lamp 103 in the X direction and the Y direction can be arbitrarily rotated by a frictional force generated by a spring provided inside the joint 102. It can be stopped at the position. However, the frictional force in the X direction is set to be large so that the lamp 103 does not swing.
Therefore, when the lamp 103 is rotated in the X direction, the frictional force that restricts the rotation in the X direction by grasping the handle 104 provided in the lamp 103 and pulling the wire 105 in the arrow direction. Rotation is performed with a small size.
Japanese Patent Laid-Open No. 2-197008 (FIG. 1)

  However, in the lighting apparatus 100 described in Patent Document 1 described above, when the lamp 103 is rotated, the wire 105 and the handle 104 are provided to reduce the frictional force that restricts the rotation. There are problems that the number of points is large, the assemblability is poor, and the cost is increased.

  The present invention has been made to solve the conventional problems, and it is an object of the present invention to provide a lighting apparatus capable of rotating a lamp and stopping at an arbitrary angle with a simple configuration and reducing the number of parts. And

  The luminaire of the present invention is a luminaire having a lamp body having a light source and an arm that rotatably supports the lamp body by a rotating portion, and the rotating portion includes the arm and the lamp body. In order to generate a frictional force for fixing the elastic body, an elastic body that generates an outward urging force and an operation lever that reduces the urging force of the elastic body are provided.

  With this configuration, an elastic body is provided in the rotating portion that rotatably supports the lamp body on the arm, and a frictional force that fixes the arm and the lamp body is generated by an outward biasing force generated by the elastic body. The lamp body can be fixed to the arm at a desired rotation angle. Further, by reducing the biasing force of the elastic body with the operation lever, the frictional force can be reduced and the lamp can be rotated to a desired angle.

  Moreover, the lighting fixture of this invention has the structure by which the said lamp and the said operation lever were provided integrally.

  With this configuration, since the lamp body and the operation lever are provided integrally, the outward biasing force generated by the elastic body by grasping the operation lever is reduced, and at the same time, the operation lever is rotated to obtain the desired lamp body. It can be rotated to an angle of In addition, the number of parts can be reduced.

  Furthermore, the lighting fixture of the present invention has a configuration in which the operation lever and the elastic body are the same member.

  With this configuration, since the elastic body that generates the frictional force that fixes the arm and the lamp body by the outward biasing force and the operation lever that reduces the frictional force and rotates the lamp body are the same member, the operation lever The lamp can be rotated to a desired angle by rotating the operation lever at the same time as holding the lens to reduce the frictional force. In addition, the number of parts can be reduced.

  According to the present invention, an elastic body is provided in a rotating portion that rotatably supports the lamp body on the arm, and a frictional force that fixes the arm and the lamp body is generated by an outward biasing force generated by the elastic body. The lamp body can be fixed to the arm at a desired rotation angle. Further, by reducing the biasing force of the elastic body by the operation lever, it is possible to provide a lighting apparatus having an effect of reducing the frictional force and rotating the lamp body to a desired angle. is there.

Hereinafter, the lighting fixture of embodiment of this invention is demonstrated using drawing.
FIG. 1 is a perspective view of a lighting fixture according to a first embodiment of the present invention, and FIG. 2 is an enlarged plan view of a rotating part.

  As shown in FIG. 1, the luminaire 10 according to the first embodiment of the present invention is movable along a lighting rail (not shown) attached to a ceiling 11 or the like, which is an attachment surface, and receives electric power from the lighting rail. A lighting plug 12 to be supplied is provided, and a fixture fixing member 13 is provided vertically downward from the lighting plug 12.

  An arm 21 is fixed to the lower end portion of the instrument fixing member 13. The arm 21 has a gate shape, and a rotating portion 30 is provided at the lower end of a pair of opposing side plates 21a. Also, a pair of highly rigid opposing lamp body support portions 24, 24 project from the rear wall 23a of the lamp body 23 having the lamp 22 as the light source to the rear (right side in FIG. 1), and the lamp A rotation part 30 is provided at the tip of the body support part 24. In addition, although the lamp body support parts 24 and 24 can be provided integrally with the lamp body 23, they can be attached as separate bodies.

  In the rotating portion 30 that rotatably connects the arm 21 and the lamp body 23, a pair of side plates 21 a of the arm 21 is disposed in contact with the inside of the pair of highly rigid lamp body support portions 24, 24, and the inside thereof An operating lever 31 is disposed, and a spring 32 that generates an outward biasing force is provided inside the operating lever 31 in a compressed state. Then, a bolt 33 and a nut 34 which are rotating shafts are fastened through the support portion 24, the arm 21, the operation lever 31 and the spring 32.

  The operation lever 31 is substantially V-shaped as a whole, and has a bent fulcrum 31a, a pair of pressing portions 31b and 31b continuous to the fulcrum 31a, and a pair of operation portions 31c at the tip. The pressing part 31b and the operation part 31c can be opened and closed with the fulcrum 31a as a center. The spring 32 is disposed between the pair of pressing portions 31b and 31b. Moreover, it is also possible to provide the left and right pressing portions 31b and the operation portion 31c as separate bodies and connect them at the fulcrum 31a.

  Therefore, the pressing portion 31b of the operating lever 31 is pressed outward by the outward repulsive force of the spring 32, and the side plate 21a of the arm 21 is pressed against the lamp body supporting portion 24 by the pressing portion 31b. As a result, a frictional force is generated between the side plate 21 a of the arm 21 and the lamp support 24, and the lamp support 24 is fixed to the arm 21.

  On the other hand, when the lamp body 23 is rotated with respect to the arm 21, the operation portions 31 c and 31 c at the tip of the operation lever 31 are gripped to bring both the operation portions 31 c and 31 c closer. As a result, the pressing portions 31 b and 31 b approach and compress the spring 32, so that the outward biasing force of the spring 32 is received by the pressing portion 31 b of the operation lever 31. For this reason, the pressing force between the side plate 21a of the arm 21 and the lamp body support portion 24 is reduced, and the frictional force between the side plate 21a and the lamp body support portion 24 is reduced. It becomes possible to rotate.

  Note that the rotation resistance when the lamp body 23 is rotated can be adjusted by the force with which the operation lever 31 is gripped. When the operating lever 31 is squeezed firmly and the compression force of the spring 32 is received by the pressing portion 31b, the pressing force between the side plate 21a and the lamp support portion 24 becomes zero, so that the lamp 23 falls by its own weight ( Rotate). Therefore, by adjusting the force with which the operation lever 31 is gripped and applying an appropriate rotational frictional force, the lamp body 23 can be rotated and can be prevented from falling by its own weight. When the operating lever 31 is opened after setting the lamp body 23 to a desired angle, the lamp body 23 is fixed to the arm 21 at the set angle.

  As described above, according to the lighting fixture 10 according to the first embodiment described above, the spring 32 is provided in the rotating portion 30 that rotatably supports the lamp body 23 on the arm 21, and the outward attachment generated by the spring 32 is provided. Since the frictional force for fixing the arm 21 and the lamp body 23 is generated by the force, the lamp body 23 can be fixed to the arm 21 at a desired rotation angle. Further, by reducing the urging force of the spring 32 with the operation lever 31, the frictional force can be reduced and the lamp body 23 can be rotated to a desired angle.

Next, the lighting fixture 10B concerning 2nd Embodiment of this invention is demonstrated.
FIG. 3 is a perspective view of a lighting fixture according to the second embodiment of the present invention, and FIG. 4 is an enlarged plan view of a rotating portion. In addition, the same code | symbol is attached | subjected to the site | part which is common in 1st Embodiment mentioned above, and the overlapping description is abbreviate | omitted.

As shown in FIGS. 3 and 4, in the lighting fixture 10 </ b> B according to the second embodiment, the lamp body 23 and the operation lever 35 are integrally provided.
The operation lever 35 is generally V-shaped as a whole, and is attached to the lamp body 23 and serves as a fulcrum attachment portion 35a, a pair of pressing portions 35b and 35b continuous to the attachment portion 35a, and a pair of operation portions at the tip. 35c. The pressing portion 35b and the operation portion 35c can be opened and closed with the attachment portion 35a as the center. In addition, the left and right pressing portions 35b and the operation portion 35c can be provided separately and can be integrally attached to the lamp body 23, respectively.

  As shown in FIG. 4, in the rotating part 30B, the pressing part 35b of the operating lever 35 is disposed in contact with the inside of the pair of side plates 21a, 21a of the arm 21, and between the pair of pressing parts 35b, 35b. A spring 32 for generating an outward biasing force is interposed.

  Accordingly, the outward repulsive force of the spring 32 pushes the pressing portion 35 b of the operation lever 35 outward, and presses the pressing portion 35 b against the side plate 21 a of the arm 21. Accordingly, a frictional force is generated between the side plate 21 a of the arm 21 and the pressing portion 35 b of the operation lever 35, and the operation lever 35 is fixed to the arm 21. That is, the lamp body 23 to which the operation lever 35 is integrally attached is fixed to the arm 21.

  On the other hand, when the lamp body 23 is rotated with respect to the arm 21, the operation portions 35 c and 35 c at the tip of the operation lever 35 are grasped to bring both the operation portions 35 c and 35 c closer. Thereby, both pressing parts 35b and 35b approach and compress the spring 32, so that the outward biasing force of the spring 32 is received by the pressing part 35b of the operating lever 35. For this reason, the pressing force between the side plate 21 a of the arm 21 and the operation lever 35 is reduced, and the frictional force between the side plate 21 a and the pressing portion 35 b is reduced, so that the lamp body 23 rotates with respect to the arm 21. It becomes possible.

  In addition, the rotation resistance when rotating the lamp body 23 can be adjusted by a force for gripping the operation lever 35. If the operating lever 35 is squeezed firmly and the compression force of the spring 32 is received by the pressing portion 35b, the pressing force between the side plate 21a and the pressing portion 35b becomes zero. ) Therefore, by adjusting the force for gripping the operation lever 35 and applying an appropriate rotational frictional force, the lamp body 23 can be rotated and can be prevented from falling by its own weight. When the operating lever 35 is opened after setting the lamp body 23 to a desired angle, the lamp body 23 is fixed to the arm 21 at the set angle.

As mentioned above, also in the lighting fixture 10B concerning 2nd Embodiment demonstrated, the effect | action and effect similar to the lighting fixture 10 concerning 1st Embodiment mentioned above can be acquired.
Furthermore, since the lamp body 23 and the operation lever 35 are provided integrally, the outward biasing force generated by the spring 32 by grasping the operation lever 35 is reduced, and at the same time, the lamp body 23 is rotated to rotate the lamp body. Since 23 can be rotated to a desired angle, operability is improved. In addition, the number of parts can be reduced.

In addition, the lighting fixture of this invention is not limited to each embodiment mentioned above, A suitable deformation | transformation, improvement, etc. are possible.
For example, in each of the above-described embodiments, the case where the spring 32 is disposed at the position of the bolt 33 that is the rotation center is illustrated, but instead of this, as shown in FIG. For example, it may be provided between a pair of operation portions 31c, 31c (35c, 35c).
Alternatively, the spring 32 can be omitted by making the operating lever 31 (35) itself a spring member that generates an urging force to spread outward. In this case, the number of parts can be reduced.

The perspective view of the lighting fixture concerning 1st Embodiment of this invention. Enlarged plan view of rotating part The perspective view of the lighting fixture concerning 2nd Embodiment of this invention. Enlarged plan view of rotating part Plan view showing another example of spring arrangement The perspective view which shows the conventional lighting fixture

Explanation of symbols

10 Lighting equipment 21 Arm 22 Lamp (light source)
23 Lamp 30 Rotating part 31 Operation lever 32 Spring (elastic body)

Claims (3)

A lighting fixture having a lamp body having a light source and an arm that rotatably supports the lamp body by a rotating portion,
The rotating part is
An elastic body for generating an outward biasing force to generate a frictional force for fixing the arm and the lamp body;
An illuminating device, comprising: an operation lever that reduces a biasing force of the elastic body.   The lighting apparatus according to claim 1, wherein the lamp body and the operation lever are provided integrally.   2. The luminaire according to claim 1, wherein the operation lever and the elastic body are the same member.

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