JP2021150169A - Lighting apparatus - Google Patents

Abstract

To provide a lighting apparatus capable of rotating a lamp body at 360 degrees or more by a simpler structure than conventional ones.SOLUTION: The lighting apparatus includes a lamp body equipped with a light source, an arm part 30 supporting the lamp body, and a base part 50 supporting the arm part 30, and has a rotation mechanism RF which is provided with an annual washer 51 in which projection parts 53c, 53d project from an inner periphery and whose rotation is regulated within an angle range below 360 degrees. An end part of the arm part 30 has a shaft part 33 a part of whose outer periphery of a cylinder is flat. The shaft part 33 is inserted in an inner periphery OP53 of a washer 53, regulates rotation with respect to the washer 53 when flat parts 33a, 33b are in contact with the projection parts 53c, 53d and can rotate with respect to the washer 53 at an angle regulating rotations of the washer 53 or more.SELECTED DRAWING: Figure 2

Description

The present invention relates to a luminaire in which a lamp body can rotate around a pipe-shaped arm.

Patent Document 1 discloses a rotary luminaire that can rotate a lamp body in a horizontal direction by 360 ° or more and aim it in any direction. Specifically, in this luminaire, as shown in FIGS. 5 (a) and 5 (b), the mounting body 1041 included in the lamp body and the support shaft 1002 supporting the lamp body rotate relatively. ..

When the rotation direction is the arrow a direction shown in FIG. 5B, the second stopper 1049 rotates integrally with the support shaft 1002, and the pushing portion 1056 moves to the contact portion 1055 of the first stopper 1048 with this rotation. Touch and push. When the support shaft 1002, the first stopper 1048, and the second stopper 1049 rotate integrally in the direction of arrow a, and the contact portion 1055 abuts on one of the regulation portions 1057, the rotation of the support shaft 1002 stops.

On the other hand, when the support shaft 1002 rotates in the direction of the arrow b on the opposite side from this state, the second stopper 1049 rotates integrally with the support shaft 1002. Then, this rotation progresses and the pushing portion 1056 of the second stopper 1049 comes into contact with the contacting portion 1055 of the first stopper 1048 that is in contact with the regulating portion 1057, and the contacting portion 1055 is pushed by the pushing portion 1056. The first stopper 1048 rotates integrally with the second stopper 1049 in the direction of arrow b. Then, when the contact portion 1055 comes into contact with the other regulating portion 1058, the rotation of the support shaft 1002 stops.

In this way, the lamp body is rotated by 360 ° or more, and the rotation beyond that is regulated to prevent excessive twisting of the power cord or the like passing through the support shaft.

Japanese Unexamined Patent Publication No. 3-20905

In the case of the luminaire described in Patent Document 1, the lamp body can be rotated 360 degrees or more, and the power cord passing through the support shaft can be prevented from being over-twisted, but each of the two stoppers rotates. There is a problem that the configuration is complicated.

The present invention has been made in view of such a problem, and an object of the present invention is to provide a lighting fixture capable of rotating a lamp body by 360 degrees or more with a simpler configuration than the conventional one.

The luminaire according to the present invention is a luminaire including a lamp body provided with a light source, an arm portion that supports the lamp body, and a base portion that supports the arm portion, and is annular and has an inner circumference. It has a rotation mechanism including a washer whose rotation is restricted in an angle range of less than 360 degrees, and the tip portion of the arm portion is a shaft portion in which a part of the outer periphery of the cylinder is flattened. The shaft portion is inserted through the inner circumference of the washer, and when the flattened portion abuts on the protruding portion, rotation with respect to the washer is restricted, and the washer is restricted from rotating at an angle equal to or greater than that of the washer. It is rotatable with respect to.

With such a configuration, the lighting fixture according to the present invention can rotate the lamp body by 360 degrees or more with a simple configuration.

(A) A side view showing the appearance of a lighting fixture according to an embodiment of the present invention, (b) a front view of the same, and (c) a rear view of the same (the duct plug schematically shows an internal structure). (A) An enlarged view of a portion surrounded by a broken line around the rotation mechanism RF of the lighting fixture in FIG. 1 (c), (b) a plan view showing the configuration of the rotation mechanism, and (c) a side view showing the configuration of the rotation mechanism. , (D) Plan view showing each part constituting the rotation mechanism (A) Plan view (rotation angle 0 °) showing the rotation state of the rotation mechanism, (b) the same figure (rotation angle θ11), (c) the same figure (rotation angle θ12), (d) the same figure (rotation angle θ13). ), (E) Fig. (Rotation angle θ14), (f) Fig. (Rotation angle θ15) (A) A plan view showing a rotation mechanism of a lighting fixture according to a modification of the present invention, and (b) a plan view showing an example of a washer constituting the rotation mechanism. (A) A perspective view showing a rotation mechanism of a lighting fixture according to a prior art, and (b) a diagram for explaining a rotation operation in the rotation mechanism.

Hereinafter, the lighting fixture 1 according to the embodiment of the present invention will be described with reference to the drawings. The luminaire 1 is detachably attached to a duct rail arranged on the ceiling, which is an example of an installation target. In the following description, with reference to the posture of the luminaire 1 shown in FIG. 1 (a) installed on the ceiling, as shown by an arrow in FIG. 1 (a), the ceiling direction is upward when viewed from the luminaire 1. The floor direction will be described below, the light irradiation direction will be described as the front, and the opposite direction will be described as the rear.

<1. First Embodiment>
1 (a) is a side view showing the appearance of the lighting fixture 1 according to the embodiment of the present invention, FIG. 1 (b) is the front view, and FIG. 1 (c) is the rear view. .. The luminaire 1 is, for example, a spotlight that is detachably attached to a duct rail, and as shown in FIGS. 1 (a) to 1 (c), the lamp body 10, the arm portion 30, and the duct plug 50 To be equipped with. Regarding the duct plug 50 in FIG. 1 (c), the description is such that the rear portion of the housing is omitted so as to show the internal configuration.

The lamp body 10 has a light source such as an LED (Light Emitting Diode), optical components such as a reflector and a lens, a control unit, and the like, and supplies power from the outside of the luminaire 1 through a duct plug 50 and a lead wire EC. Receive and irradiate light from the light source. The arm portion 30 is a hollow cylindrical member, which is rotatably fitted to the duct plug 50 on the upper end side in the horizontal direction about the rotation axis CA, and holds the lamp body 10 on the lower end side. A lead wire EC that electrically connects the duct plug 50 and the lamp body 10 is inserted into the hollow portion of the arm portion 30.

The duct plug 50 is a plug that is detachably attached to the duct rail and receives power from an external power source via the duct rail.

Here, since the lamp body 10 is fixed so as not to rotate horizontally with respect to the arm portion 30, when the lamp body 10 is rotated horizontally with respect to the duct plug 50, the arm portion 30 also has a duct plug. It will rotate in the horizontal direction as much as the lamp 10 with respect to 50. Further, in the rotation mechanism RF described later, the lamp body 10 and the arm portion 30 are regulated so as not to rotate with respect to the duct plug 50 beyond a predetermined upper limit rotation angle (FIGS. 3A to 3A). f) See). In FIG. 3 (f), the upper limit rotation angle is represented as the rotation angle θ15. With this configuration, it is possible to prevent the lamp body 10 and the arm portion 30 from rotating too much with respect to the duct plug 50, and the lead wire EC passing through the inside of the arm portion 30 also twists too much due to this rotation. The upper limit rotation angle is set to 375 degrees as an example, but an angle of 360 degrees or more is sufficient, and if it is an angle or less (720 degrees, for example) that the twist of the lead wire when rotating can be suppressed within an allowable range. good. Hereinafter, the rotation mechanism RF will be described in detail.

<Rotation mechanism RF>
The rotation mechanism RF is a mechanism that allows the lamp body 10 and the arm portion 30 to rotate up to a predetermined upper limit rotation angle of 360 degrees or more with respect to the duct plug 50, which is an example of the base portion. FIG. 2A is an enlarged view of a portion surrounded by a broken line around the rotation mechanism RF of the luminaire in FIG. 1C. FIG. 2B is a plan view for explaining the rotation mechanism RF, FIG. 2C is a side view showing a state in which the rotation mechanism RF is divided into constituent members, and FIG. 2D is a side view. , It is the same plan view.

As shown in FIG. 2A, the rotation mechanism RF is configured at the lower end portion of the duct plug 50. The rotation mechanism RF includes an annular hexagon nut 55, a washer 53, a base portion 51, and an arm portion 30. In addition, in FIG. 2B and FIG. 2D, when the hexagon nut 55 is represented on the drawing, the orientation of the arm portion 30 and the washer 53 in rotation is hidden, so the hexagon nut 55 is omitted. There is. Similarly, the hexagon nut 65 is omitted in FIGS. 3 (a) to 3 (f), 4 (a), and 4 (b).

The base portion 51 is an annular and plate-shaped member having an opening OP51 at the center, and a protrusion 51b is provided on the upper surface thereof. The washer 53 is an annular member having an opening OP53 at the center, and the rotation stop portion 53b projects outward from a part of the outer circumference of the annulus, and the projecting portion 53c and the projecting portion from the inner circumference of the annulus. 53d protrudes toward the center of the annulus. The protrusion 51b of the base portion 51 is located on the orbit in which the rotation stop portion 53b rotates when the washer 53 rotates with respect to the base portion 51, and functions as a regulating member for restricting the rotation of the washer 53. do.

As shown in FIGS. 2 (c) and 2 (d), the arm portion 30 includes a cylindrical pipe portion 31, a spacer portion 32 having an outer diameter larger than that of the pipe portion 31, and a shaft portion 33.

As shown in FIGS. 2 (c) and 2 (d), the shaft portion 33 has a tubular shape with an opening OP30 at the center, and is flat so as to cut out a part of the outer circumference of the cylinder in two places. It has a shaped shape. Hereinafter, the two flattened portions are referred to as "flat portion 33a" and "flat portion 33b". Further, hereinafter, with respect to the shaft portion 33, the two spaces corresponding to the notched portions on the outer circumference of the cylinder are referred to as "notch space 33c" and "notch space 33d". A screw thread that fits into a screw thread on the inner peripheral surface of the hexagon nut 55 is formed in a portion of the shaft portion 33 other than the flat portion 33a and the flat portion 33b.

<Assembly of rotation mechanism RF>
Hereinafter, the assembly of the rotation mechanism RF will be described. First, the shaft portion 33 is inserted into the opening OP51 of the base portion 51 and the opening OP53 of the washer 53, and the base portion 51 and the washer 53 are placed on the spacer portion 32.

Here, the inner diameter of the opening OP51 of the base portion 51 is substantially the same as the outer diameter of the shaft portion 33, and more strictly speaking, it is slightly larger. Further, the central axis of the shaft portion 33 and the opening center of the opening OP51 coincide with the rotation axis CA. Therefore, in the state where the shaft portion 33 is inserted through the opening OP 51, the shaft portion 33 is in a state of being rotatable about the rotation shaft CA with respect to the base portion 51.

Further, the inner diameter of the opening OP53 of the washer 53 is substantially the same as the outer diameter of the shaft portion 33, and more strictly speaking, it is slightly larger. The opening center of the opening OP53 and the central axis of the shaft 33 coincide with the rotation axis CA. The protruding portion 53c and the protruding portion 53d of the washer 53 fit into the notch space 33c and the notch space 33d, respectively.

Therefore, in a state where the shaft portion 33 is inserted through the opening OP53, the shaft portion 33 abuts the washer 53 in a range in which the protruding portion 53c does not abut on the flat portion 33a and the protruding portion 53d abuts on the flat portion 33b. In the range where it does not, it becomes rotatable with respect to the washer 53.

The hexagon nut 55 is engaged with the screw thread of the shaft portion 33 from above in a state where the base portion 51 and the washer 53 are passed through the shaft portion 33 of the arm portion 30 and placed on the spacer portion 32. It is fitted into the shaft portion 33 so as to fit. As a result, the washer 53, the shaft portion 33, and the arm portion 30 are fixed to the base portion 51 in a rotatable state.

Here, the base portion 51 is fitted into a groove portion 50b provided in a U-shaped cross section in the housing 50a of the duct plug 50 and is fixed so as not to move, and the rotation mechanism RF is a lighting fixture. It can be removed from 1. As a result, the rotation mechanism RF can be assembled and then incorporated into the housing 50a of the duct plug 50, which leads to easy assembly of the lighting fixture 1.

<Rotation operation>
The rotation operation by the rotation mechanism RF will be described with reference to FIGS. 3 (a) to 3 (f). Regarding the rotation, the lamp body 10 or the arm portion 30 is rotated with respect to the duct plug 50. At this time, in the rotation mechanism RF, the shaft portion 33 rotates with respect to the base portion 51.

The mark MK attached to the shaft portion 33 of the arm portion 30 in FIG. 3A is attached for convenience of explanation in order to make it easy to understand the degree of rotation of the shaft portion 33. In the following description, as shown in FIG. 3A, the rotation angle is 0 degrees when one side surface 53g of the rotation stop portion 53b of the washer 53 is in contact with the outer periphery of the protrusion 51b on the base portion 51. It is assumed that the state is. In the washer 53, the other side surface 53h of the rotation stop portion 53b abuts on the outer periphery of the protrusion 51b from the state where the rotation angle is 0 degrees with respect to the base portion 51 and the housing 50a of the duct plug 50. Rotation is restricted to a range up to, that is, an angle range of less than 360 degrees.

From this state, when the shaft portion 33 is rotated in the rotation direction R3, the protruding portion 53c is located in the notch space 33c without contacting the flat portion 33a, and the protruding portion 53d does not contact the flat portion 33b. It is located in the notch space 33d. Then, as the rotation is continued, as shown in FIG. 3B, at the rotation angle θ11, the protruding portion 53c comes into contact with the flat portion 33a, and the protruding portion 53d comes into contact with the flat portion 33b. When the rotation of the shaft portion 33 is further continued, as shown in FIGS. 3 (c) to 3 (e), the protruding portion 53c is pushed by the flat portion 33a, and the protruding portion 53d is pushed by the flat portion 33b to rotate. The washer 53 also rotates as the angle increases from θ12 to θ13 and from θ13 to θ14.

Here, the rotation angle θ14 is 360 degrees, which means that the shaft portion 33 makes one rotation with respect to the base portion 51.

Further, as the rotation of the shaft portion 33 is continued, as shown in FIG. 3 (f), at the rotation angle θ15, the other side surface 53h of the rotation stop portion 53b comes into contact with the outer periphery of the protrusion portion 51b. As described above, the shaft portion 33 cannot be rotated in the rotation direction R3.

As described above, in the rotation mechanism RF, the lamp body 10 and the arm portion 30 are regulated so as not to rotate with respect to the duct plug 50 beyond a predetermined upper limit rotation angle. With this configuration, it is possible to prevent the lamp body 10 and the arm portion 30 from rotating too much with respect to the duct plug 50, and the lead wire EC passing through the inside of the arm portion 30 also twists too much due to this rotation.

<2. Second embodiment>
In the above-described embodiment, the protruding portion 53c and the protruding portion 53d included in the washer 53 are configured such that the outer edge of the portion protruding toward the center of the annulus is a chevron curve. In this case, as shown in FIG. 3F as an example, the range in which the protruding portion 53c abuts on the flat portion 33a is narrow, and the force for stopping the movement of the flat portion 33a is not sufficiently transmitted from the protruding portion 53c to the flat portion 53a. there is a possibility. The same applies to the protruding portion 53d and the flat portion 33b. In this case, when a strong force for rotating the shaft portion 33 is further applied, the protruding portion 53c and the protruding portion 53d cannot sufficiently support the flat portion 33a and the flat portion 33b, and the flat portion 33a and the flat portion 33b cannot be sufficiently supported. May get over the top of the chevron curve along the outer edges of the protrusions 53c and 53d and rotate further.

Therefore, in the second embodiment, as shown in FIGS. 4A and 4B, instead of the washer 53, the outer edge of the shape is formed of a straight line, and the protruding portion 53m protruding in a triangular shape and A washer 531 having a protrusion 53n is used to form a rotation mechanism RF.

In the protruding portion 53m, the range of contact with the flat portion 33a is wider than in the case of the protruding portion 53c, and the force for stopping the movement of the flat portion 33a is more sufficiently transmitted from the protruding portion 53m to the flat portion 53a. .. Similar to the case of the protruding portion 53m, the protruding portion 53n has a wider range of contact with the flat portion 33b than the case of the protruding portion 53d, and the force for stopping the movement of the flat portion 33b is flat from the protruding portion 53m. It is more sufficiently transmitted to the part 53a.

Therefore, even when a strong force for rotating the shaft portion 33 is further applied, the flat portion 33a and the flat portion 33b come into contact with the protruding portion 53m and the protruding portion 53n in a wide range, and the protruding portion 53m and the protruding portion 53n are in contact with each other in a wide range. Since the flat portion 33a and the flat portion 33b are sufficiently supported, it is possible to prevent further rotation.

<3. Modification example>
Although the embodiment of the luminaire according to the present invention has been described above, it should be considered that the above description of the embodiment is an example in all respects and is not restrictive. The scope of the present invention is shown not by the above-described embodiment but by the scope of claims. Furthermore, the scope of the present invention is intended to include all modifications within the meaning and scope equivalent to the claims. It is also possible to modify the illustrated luminaire as follows, and it goes without saying that the present invention is not limited to the luminaire as shown in the above-described embodiment.
(1) In the above-described embodiment and modification, the base portion 51 is composed of a member separate from the housing 50a, and the rotation mechanism RF can be removed from the luminaire 1, but it is not necessarily a member separate from the housing 50a. It doesn't have to be, and it doesn't have to be circular. The base portion 51 is integrated with the housing 50a as long as the washer 53 is placed and the protrusion 51b is arranged at a position where the washer 53 can come into contact with the rotation stop portion 53b when the washer 53 rotates. It may be a configuration.

(2) In the above-described embodiment and modification, the lighting fixture 1 is attached to the duct rail, but the attachment form is not particularly limited and is attached to the ceiling, wall surface, under the shelf, etc. without using the duct rail. It may be in a form such as a desk light, a stand light, or the like, which may be placed on an installation surface such as a floor or a tabletop.

(3) In the above-described embodiment and modification, the lighting fixture 1 is a spotlight, but the lighting fixture 1 is not limited to this, and any lighting fixture having a rotation mechanism RF for rotating the lamp body or the like may be used.

(4) In the above-described embodiment and modification, the rotation mechanism RF in the luminaire 1 is provided in the duct plug 50, but the present invention is not limited to this, and it is sufficient if the lamp body or the like can rotate in the horizontal direction. For example, the rotation mechanism RF may be incorporated on the lamp body 10 side instead of the duct plug 50 side.

(5) In the above-described embodiment and modification, the number of protruding portions protruding from the inner circumference of the opening OP53 of the washer 53 is two, but the present invention is not limited to this. The number of protrusions may be one or three or more.

(6) In the above-described embodiment and modification, the LED is used as the light source, but the present invention is not limited to this, and other light sources such as organic EL (Organic Electroluminescence) may be used.

(7) The above-described embodiment and each modification may be partially combined.

<4. Extraction of invention>
Hereinafter, a configuration of a lighting fixture as an embodiment of the present invention, a modification thereof, and an effect thereof will be described.

(1) The luminaire according to an embodiment of the present invention is a luminaire including a lamp body provided with a light source, an arm portion supporting the lamp body, and a base portion supporting the arm portion. The arm has a rotating mechanism that is annular and has a washer whose rotation is restricted in an angle range of less than 360 degrees, with a protruding portion protruding from the inner circumference. The shaft portion is inserted into the inner circumference of the washer, and when the flattened portion abuts on the protruding portion, rotation with respect to the washer is restricted, and the washer rotates. It is rotatable with respect to the washer by a regulated angle or more.

According to this configuration, it is possible to provide a lighting fixture capable of rotating the lamp body by 360 degrees or more with a simple configuration.

(2) Further, the washer has a rotation stop portion protruding from the outer periphery, and the rotation mechanism includes a regulating member on the orbit of the rotation stop portion when the washer rotates, and the regulating member rotates the washer. May be regulated.

According to this configuration, the rotation of the washer can be regulated by a restricting member having a simple configuration such as a protrusion.

(3) Further, the outer edge of the protruding portion protrudes in a triangular shape, and the linear portion of the outer edge comes into contact with the flattened portion of the shaft portion, and the shaft portion rotates with respect to the washer. May be regulated.

According to this configuration, it is possible to more reliably regulate the rotation of the shaft portion with respect to the washer as compared with the case where the outer edge of the protruding portion is configured by a curved line.

(4) Further, the rotation mechanism may be arranged in the base portion.

According to this configuration, it is possible to realize a lighting fixture capable of rotating the arm portion and the lamp body portion in the horizontal direction while the position of the base portion is fixed.

(5) Further, the base portion may be a duct plug fixed to the duct rail.

According to this configuration, with respect to the luminaire fixed to the duct rail, it is possible to provide a luminaire capable of rotating the lamp body by 360 degrees or more with a simple configuration.

1 Lighting equipment 10 Lamp body 30 Arm part 31 Pipe part 32 Spacer part 33 Shaft part 33a, 33b Flat part 33c, 33d Notch space 50 Duct plug 50a Housing 50b Groove part 51 Base part 51b Projection part 53,531 Washer 53b Rotation stop Part 53c, 53d, 53m, 53n Protruding part 53g, 53h Side surface 55 Hexagon nut 1002 Support shaft 1041 Mounting body 1048 First stopper 1049 Second stopper 1055 Contact part 1056 Pushing part 1057, 1058 Control part CA Rotating shaft EC lead Line MK mark OP30, OP51, OP53 Opening R3 Rotation direction RF Rotation mechanism θ11, θ12, θ13, θ14, θ15 Rotation angle

Claims (5)

A luminaire including a lamp body provided with a light source, an arm portion that supports the lamp body, and a base portion that supports the arm portion.
It has a rotating mechanism that is annular and has a washer with a protrusion protruding from the inner circumference and whose rotation is restricted in an angle range of less than 360 degrees.
The tip portion of the arm portion is a shaft portion in which a part of the outer circumference of the cylinder is flattened.
The shaft portion is inserted through the inner circumference of the washer, and when the flattened portion abuts on the protruding portion, rotation with respect to the washer is restricted, and the washer is restricted from rotating at an angle equal to or greater than that of the washer. A luminaire that is rotatable against. The washer has a rotation stop protruding from the outer circumference.
The luminaire according to claim 1, wherein the rotation mechanism includes a regulating member on the orbit of the rotation stop portion when the washer rotates, and the regulating member regulates the rotation of the washer. Claim that the outer edge of the protruding portion protrudes in a triangular shape, and the linear portion of the outer edge comes into contact with the flattened portion of the shaft portion to regulate the rotation of the shaft portion with respect to the washer. The lighting equipment according to 1. The lighting fixture according to claim 1, wherein the rotating mechanism is arranged in the base portion. The lighting fixture according to claim 1, wherein the base portion is a duct plug fixed to a duct rail.

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