JP2009245615A - Luminaire - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a luminaire can turn a lighting tool in a simple structure and stop at an optional angle and reduce the number of components. <P>SOLUTION: Turning of a light 22 can be stopped at an optional angle against an arm 23, because a first elastomer 35 for generating biasing force in order to generate frictional force is arranged on a turning section 30 turnably connecting the arm 23 and the light 22. The biasing force can be released by an operation section 36 having the number of fewer components in a simple structure, because the operation section for releasing the biasing force based on the first elastomer 35 is arranged on the first elastomer 35, and the light 22 can be turned easily against the arm 23 by releasing the frictional force. <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).
The 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 that can be adjusted in angle and orientation, A lamp 103 is attached via the 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 lighting fixture of the present invention is a lighting fixture having a lamp body having a light source and an arm that supports the lamp body, and having a rotating portion that rotatably connects the arm and the lamp body. A first elastic body for applying a biasing force for generating a frictional force for fixing the rotation of the arm and the lamp body, and a biasing force of the first elastic body. And an operation portion provided in the first elastic body for adding or releasing the.

  With this configuration, the first elastic body that generates the urging force for generating the frictional force is provided in the rotating portion that rotatably connects the arm and the lamp body. The rotation can be stopped at an arbitrary angle. In addition, since the first elastic body is provided with an operating section for releasing the biasing force of the first elastic body, the biasing force can be released by the operation section with a simple configuration and a small number of parts, and the frictional force is released. Thus, the lamp can be easily rotated with respect to the arm.

  Moreover, the lighting fixture of this invention is provided with the 2nd elastic body which provides the frictional force of the said arm and the said lamp body, when the frictional force by the said 1st elastic body is cancelled | released by the said operation part. have.

  With this configuration, when the frictional force generated by the first elastic body is released and the lamp body is rotated with respect to the arm, the second elastic body generates a frictional force between the arm and the lamp body. It is possible to prevent the lamp from shaking with respect to the arm.

  In the present invention, since the first elastic body that generates the biasing force for generating the frictional force is provided in the rotating portion that rotatably connects the arm and the lamp body, the lamp body is attached to the arm. The rotation can be stopped at an arbitrary angle. In addition, since the first elastic body is provided with an operating section for releasing the biasing force of the first elastic body, the biasing force can be released by the operation section with a simple configuration and a small number of parts, and the frictional force is released. Thus, it is possible to provide a lighting apparatus having an effect that the lamp body can be easily rotated with respect to the arm.

Hereinafter, the lighting fixture of embodiment of this invention is demonstrated using drawing.
1A is a perspective view of the lighting apparatus according to the first embodiment of the present invention as viewed from the front, FIG. 1B is a perspective view of the same from the rear, and FIG. 2A is a non-operation of the operation unit. FIG. 2B is an enlarged cross-sectional view showing the time of operation of the operation unit.

  As shown in FIG. 1, the luminaire 10 according to the first embodiment of the present invention includes a lamp body 22 having a lamp 21 that is a light source, and an arm 23 that supports the lamp body 22. A rotating portion 30 that rotatably connects the portion (here, the lower end portion) and the lamp body 22 is provided.

  A lighting plug 24 that is movable along a lighting rail (not shown) that is attached to the ceiling 11 that is an attachment surface and that is supplied with electric power from the lighting rail is attached to the upper end of the arm 23. The arm 23 is supported by the lighting plug 24 so as to be rotatable about the axis of the arm 23.

  As shown in FIG. 2 (A), the rotating portion 30 is integrally provided so as to protrude upward from the upper surface 22a of the lamp body 22, and has, for example, a cylindrical rotating portion main body 31 and a lid portion 32. ing. The lid portion 32 is provided with a notch 32a for allowing the arm 23 to rotate, and the tip of the arm 23 is inserted into the inside of the rotating portion main body 31 from the notch 32a.

  A notch 31a is provided on the side surface of the rotating portion main body 31, and a bearing piece 33 is bent upward in an L shape from the upper surface 22a of the lamp body 22 corresponding to the position of the notch 31a. . The bearing piece 33 pivotally supports one end of a shaft 34 that rotatably attaches the tip of the arm 23 to the lamp body 22, and the other end of the shaft 34 is a rotating portion main body. 31 is pivotally supported. The shaft 34 penetrates the lower end portion of the arm 23, and allows the arm 23 to rotate around the shaft 34 and restricts the rotation of the arm 23 in other directions.

Around the shaft 34, a first spring 35, which is a first elastic body, is provided between the rotating portion main body 31 and the arm 23, and the first spring 35 is compressed and always extends. The urging force is acting in the direction. Between the first spring 35 and the arm 23, a release wall 36 a of a release member 36 having a U-shaped cross section is provided as an operation portion, and the release member 36 can reciprocate along the shaft 34. Yes. Therefore, the release wall 36 a can compress the first spring 35 by the movement of the release member 36.
The operation wall 36b of the release member 36 that faces the release wall 36a is exposed to the outside from the notch 31a of the rotating portion main body 31, and an operation button 37 is attached to the outer surface.

  The upper wall 36c of the release member 36 is provided with a notch 36d so that the upper wall 36c does not interfere with the arm 23 when the release member 36 is moved. A washer 38 is provided between the inner surface of the release wall 36 a of the release member 36 and the arm 23, and the positional relationship between the notch 36 d provided on the upper wall 36 c of the release member 36 and the arm 23. Is adjusted.

  Accordingly, in a normal state in which the operation button 37 (that is, the release member 36) is not operated, the release wall 36a and the washer 38 of the release member 36 are moved to one side of the arm 23 (FIG. 2A) by the biasing force of the first spring 35. ) And the other surface (left surface) of the arm 23 is pressed against the bearing piece 33. Accordingly, a frictional force acts between the arm 23 and the bearing piece 33 and the release member 36, and the rotation angle between the arm 23 and the lamp body 22 is fixed and supported in a constant state.

  It is desirable to make the friction coefficient between the arm 23 and the bearing piece 33 very small and increase the friction coefficient between the arm 23 and the washer 38. Thereby, since fastening parts, such as a screw, are not used for fixation of the lamp 22, it is not necessary to consider the setting of tightening force, the looseness in use, etc., and can obtain the stable holding force.

  On the other hand, to change the angle of the lamp 22, as shown in FIG. 2B, the operation button 37 is pushed in the direction of the arrow to move the release member 36, and the first spring 35 is moved by the release wall 36a. Compress. Thereby, the urging force of the first spring 35 pressing the right side surface of the arm 23 is released, and the frictional force between the arm 23, the washer 38 and the release wall 36a can be released. In this state, since the lamp body 22 is freely rotatable with respect to the arm 23, the lamp body 22 can be rotated in a desired direction. After the lamp body 22 is rotated, the release member 36 is pushed back to the origin (position of FIG. 2A) by the first spring 35 by releasing the operation button 37, and therefore the first spring 35 Is generated, and the rotation of the lamp body 22 is fixed.

  Note that when the first spring 35 is released by moving the release member 36 and the first spring 35 presses the rotating portion main body 51, the bearing piece 33 is pressed against the arm 23. By making the coefficient of friction between the bearing piece 33 very small, the arm 23 can be easily rotated.

  As mentioned above, according to the lighting fixture 10 concerning 1st Embodiment of this invention demonstrated, the urging | biasing force for generating a frictional force is provided in the rotation part 30 which connects the arm 23 and the lamp body 22 so that rotation is possible. Since the first spring 35 to be generated is provided, the lamp 22 can be stopped from rotating at an arbitrary angle with respect to the arm 23. Further, since the operation member 36 for releasing the urging force by the first spring 35 is provided in the first spring 35, the urging force can be released by the releasing member 36 with a simple configuration and a small number of parts, and the friction force And the lamp body 22 can be easily rotated with respect to the arm 23.

Next, the lighting fixture concerning 2nd Embodiment of this invention is demonstrated.
3A is an enlarged cross-sectional view showing when the operation unit is not operated, and FIG. 3B is an enlarged cross-sectional view showing the operation unit being operated. In addition, the same code | symbol is attached | subjected to the site | part which is common in the lighting fixture 10 concerning 1st Embodiment mentioned above, and the overlapping description is abbreviate | omitted.

  As shown in FIG. 3, in the lighting fixture 10 </ b> B according to the second embodiment of the present invention, in the lighting fixture 10 according to the first embodiment, between the washer 38 and the release wall 36 a of the release member 36, the second A second spring 39, which is an elastic body, is provided. The second spring 39 applies a frictional force between the arm 23 and the lamp body 22 when the operation button 37 is pressed to release the frictional force generated by the first spring 35.

  The second spring 39 is compressed even in the release state in which the release member 36 is moved, and exerts an urging force in a direction that always extends. The spring constant of the second spring 39 is set to be smaller than the spring constant of the first spring 35, and the biasing force by the second spring 39 is smaller than the biasing force by the first spring 35. It has become.

  Therefore, in the normal state, the second spring 39 is completely compressed by the first spring 35 and is not compressed any more, and the first spring 35 causes the lamp body 22 to rotate by frictional force. It will be fixed. As described above in the first embodiment, the friction coefficient between the arm 23 and the bearing piece 33 is made extremely small, and the friction coefficient between the arm 23 and the washer 38 is made large. desirable.

  On the other hand, to change the angle of the lamp 22, as shown in FIG. 3B, the operation button 37 is pushed in the direction of the arrow to move the release member 36, and the first spring 35 is moved by the release wall 36a. Compress. At this time, the washer 38 is pressed against the arm 23 by the urging force of the second spring 39 to generate a frictional force. Since the biasing force of the second spring 39 is smaller than the biasing force of the first spring 39, the frictional force generated between the arm 23 and the lamp body 22 is small, so the direction of the lamp body 22 is easily changed. be able to. Note that the frictional force generated by the second spring 39 is set to a magnitude that prevents the lamp body 22 from falling due to its own weight.

  As mentioned above, according to the lighting fixture 10B concerning 2nd Embodiment of this invention demonstrated, the effect | action and effect similar to the lighting fixture 10 concerning 1st Embodiment mentioned above can be acquired. Furthermore, when the direction of the lamp body 22 is changed, the second spring 39 generates a frictional force between the arm 23 and the lamp body 22, so that the lamp body 22 swings with respect to the arm 23 by its own weight. Can be prevented.

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 lighting fixtures 10 and 10B used by being suspended from the ceiling 11 are illustrated. However, in the lighting fixture of the present invention, the arm can be turned or rotated on a table such as a desk. It is applicable also to what is provided in.

(A) is the perspective view which looked at the lighting fixture concerning 1st Embodiment of this invention from the front, (B) is the perspective view similarly seen from the back (A) is an expanded sectional view which shows the time of non-operation of the operation part in the lighting fixture concerning 1st Embodiment, (B) is an expanded sectional view which shows the time of operation of an operation part. (A) is an expanded sectional view which shows the time of non-operation of the operation part in the lighting fixture concerning 2nd Embodiment, (B) is an expanded sectional view which shows the time of operation of an operation part. The perspective view which shows the conventional lighting fixture

Explanation of symbols

10 Lighting equipment 21 Lamp (light source)
22 Lamp body 23 Arm 30 Rotating part 35 First spring (first elastic body)
36 Release member (operation part)
39 Second spring (second elastic body)

Claims (2)

A lamp body having a light source, and an arm that supports the lamp body,
It is a lighting fixture having a rotating part that rotatably connects the arm and the lamp body,
A first elastic body for applying a biasing force for generating a frictional force for fixing the rotation of the arm and the lamp body; and a biasing force of the first elastic body. An illuminating device comprising: an operation unit provided on the first elastic body for addition or release.   2. The apparatus according to claim 1, further comprising a second elastic body that applies a frictional force between the arm and the lamp body when a frictional force generated by the first elastic body is released by the operation unit. lighting equipment.

Images