JPH08138434A - Luminaire - Google Patents

Abstract

PURPOSE: To reliably regulate a support body in a prescribed rotary angle range to a base stand while improving external appearance design of a rotary range regulating part of a luminaire, and facilitating assembling work of a rotary range regulating body to a support shaft. CONSTITUTION: A support body is installed on a base stand so as to be freely rotatable around a support shaft 2D in a range of 360 degrees to 720 degrees, and an arc-shaped groove 15 is formed in an angle range less than 360 degrees on a support body side installing surface H1 among mutually opposing installing surfaces H1 and H2 of the support body and the base stand, and a rotary range regulating body 14 having a first locking piece 16 to be engaged in this arc- shaped groove 15 is interposed in a support shaft 2D between both installing surfaces H1 and H2 so as to be relatively freely rotatable. An arc-shaped part 18 to be engaged is formed in an angle range less than 360 degrees on the rotary range regulating body 14. A second locking piece 17 to engage with a part 18 to be engaged is arranged on the installing surface H2 of the base stand, and a peripheral wall part 13 to cover the outer peripheral side of the rotary range regulating body 14 is formed on the support body.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lighting device such as a spotlight, and more specifically, to a support provided with a lamp on a base.
The present invention relates to a lighting fixture that is rotatably attached within a range of 360 degrees or more around a spindle and less than 720 degrees.

[0002]

2. Description of the Related Art This type of lighting equipment has a rotation range of a support body with respect to a base about a spindle of 360 degrees or more, and
Since it is regulated to less than 20 degrees, the unrestricted rotation of the support body with respect to the support shaft with respect to the base is regulated while eliminating the non-irradiable portion around the support shaft of the lighting fixture. It is possible to prevent the occurrence of disconnection due to the twisting of the power cord led to the lamp. In the prior art, as shown in FIGS. 7 and 8, a support 51 and a base 52, which are rotatably attached to each other via a bolt (an example of a support shaft) 54 and a nut 60, are opposed to each other and are flat. Mounting surface H1, H
Between the two, a disk-shaped rotation range restricting body 53 for restricting a rotation range of the support body 51 with respect to the base 52, and a bolt 54.
And a corrugated washer 59 that is elastically deformable in the direction of the axis P of the bolt 54 are provided so as to be rotatable relative to each other around the bolt 54. A notch 56 that opens outward in the diametrical direction and an tongue piece 58 that projects outward in the diametrical direction are formed within an angular range of less than 360 degrees along the circumferential direction, and the support 51 is formed. On the mounting surface H1 of the
By engaging the notch 56 of the support member 51 and the rotation range restricting body 53 with respect to the relative rotation angle range a around the axis P.
The first locking protrusion 55 that regulates the angle to less than 0 degrees is formed, and further,
The attachment surface H2 of the base 52 is brought into contact with the tongue piece 58 of the rotation range restricting body 53 from the rotation direction, so that the axial center of the base 52 and the rotation range restricting body 53. The second that restricts the relative rotation angle range b around P to less than 360 degrees
A device having a locking protrusion 57 is proposed (for example, Japanese Utility Model Publication No. 2-17366). The support 5
No. 1 of the first locking projection 55 and the cutout portion 5 of the rotation range restricting body 53
6 by the engagement with the rotation angle regulation effect by the engagement with the second locking projection 57 of the base 52 and the tongue piece 58 of the rotation range regulation body 53. The rotation angle range of the support body 51 with respect to 52 is 360 degrees or more, and
It is configured to be less than 720 degrees.

[0003]

However, in the case of this conventional lighting fixture, the rotation range restricting body 53 and the corrugated washer 59 are provided between the mounting surfaces H1 and H2 of the supporting body 51 and the base 52 which face each other. Since it is exposed to the outside from the outside, the appearance design of the entire lighting fixture is easily damaged, and the through hole 53a of the rotation range restricting body 53 with respect to the bolt 54 is enlarged,
When the assembling work of the rotation range restricting body 53 is facilitated, the rotation range restricting body 53 is increased by the increased clearance.
Is easily displaced in the diametrical direction, and the rotation range restricting body 5
3, the notch 56 and the first locking projection 55 of the support 51, and the tongue piece 58 of the rotation range restrictor 53 and the second locking projection 57 of the base 52. Is more likely to be uncertain. In particular, when a corrugated washer 59 is interposed between the rotation range restricting body 53 and the mounting surface H2 of the base 52, the corrugated washer 59 is displaced in the diametrical direction, whereby the support body 51 is moved. There is a possibility that the first locking projections 55 of the first and second locking projections 57 of the base 52 come into contact with the corrugated washers 59, and as a result, the support body 51 is rotated at a predetermined rotation angle with respect to the base 52. There is a risk that it will not be possible to rotate within the range.

The present invention has been made in view of the above-mentioned circumstances, and an object thereof is to improve the appearance design of the rotation restricting portion of a lighting fixture and to facilitate the assembling work. An object of the present invention is to provide a lighting fixture capable of reliably restricting the support body within a predetermined rotation angle range with respect to the table.

[0005]

The characteristic constitution of the present invention for achieving the above-mentioned object is to provide a support provided with a lamp on a base, which is 360 degrees or more around a support shaft and less than 720 degrees. A luminaire mounted rotatably within a range, wherein, of the mounting surfaces of the support and the base opposite to each other, a mounting surface on the side of the support has a shaft center of the support shaft as a center. The rotation range restricting body having a first locking piece engaging with the arc-shaped groove is formed in an angle range of less than 360 degrees along the circumferential direction. And a mounting surface of the support body so as to be relatively rotatable around the support shaft, and the rotation range restricting body is less than 360 degrees along the circumferential direction about the shaft center. An arc-shaped engaged portion is formed in the angle range of, and further, on the mounting surface on the base side,
A second locking piece that engages with the engaged portion is provided, and
The supporting body or the base is formed with a peripheral wall portion that covers the outer peripheral side of the rotation range restricting body.

An elastic member for urging the mounting surface of the support body against the mounting surface side of the base via the rotation range restricting body may be arranged on the back surface side of the base.

The support shaft is formed integrally with the support, and a male screw portion to which a nut for holding and fixing the elastic member between the support shaft and the back surface of the base is screwed is provided on the tip end side thereof. It may be formed.

The elastic member may be composed of a corrugated washer.

The first locking piece may be a tongue piece formed by stamping out a part of the outer peripheral edge of the rotation range restricting body.

[0010]

According to the first aspect of the present invention, the first locking piece of the rotation range restricting body is engaged with the arcuate groove formed on the mounting surface of the support body so that the rotation range of both of them can be changed. Not only can the regulation effect be exerted reliably, but also the through-hole of the rotation range regulating body with respect to the support shaft is enlarged to facilitate the assembly of the rotation range regulation body with respect to the support shaft, Since the displacement range in the diametrical direction of the rotation range regulating body can be regulated, the engagement between the engaged portion of the rotation range regulating body and the second locking piece provided on the mounting surface on the base side. It is also possible to ensure the action of restricting the rotation range by the combination. Moreover, since the outer peripheral side of the rotation range restricting body is covered with the peripheral wall portion provided on the support or the base, the rotation range restricting body is not exposed to the outside or less.

According to the second aspect of the present invention, not only can the support be frictionally held at the arbitrary rotation position around the support shaft with respect to the base, but also an elastic member for this purpose can be used as the base. The elastic member is not exposed to the outside because it is arranged on the back side of the, and the elastic member interferes with the rotating range restricting body and the like unlike the conventional case, and the desired rotating range restricting action is performed. There is no adverse effect on.

According to the structure of claim 3, the number of parts can be reduced as compared with the case where the support shaft is composed of a bolt manufactured separately from the support body. The centering of the support and the base can be easily performed.

According to the structure of claim 4, the length of the elastic member in the axial direction of the support shaft is shorter than that in the case where the elastic member is formed of a coil spring.
The thickness of the base that is attached to the ceiling surface can be reduced accordingly.

In the case of the structure according to claim 5, the manufacturing process of the rotation range regulating body can be simplified as compared with the case where the separately manufactured first locking piece is fixed to the rotation range regulating body. You can

[0015]

According to the lighting equipment of the first aspect of the present invention, while improving the appearance design of the turning range regulating portion of the lighting equipment and facilitating the work of assembling the turning range regulating body to the support shaft, It was possible to reliably regulate the support within a predetermined rotation angle range with respect to the base.

According to a second aspect of the present invention, there is provided an elastic member for holding the support body at an arbitrary rotational position around the support shaft with respect to the base, while the rotational range restricting portion of the illumination device is provided. It is possible to reliably restrict the support member within a predetermined rotation angle range with respect to the base while improving the appearance design of the.

The luminaire according to the third aspect can facilitate the assembling work of the luminaire.

In the lighting equipment according to claim 4, the base can be made compact.

The luminaire according to claim 5 can further facilitate the assembling work of the luminaire.

[0020]

EXAMPLE FIG. 5 and FIG. 6 show a spotlight 4 which is an example of a luminaire, and a support 2 provided with a lamp 3 on a base 1.
Is rotatably attached within a range of 360 degrees or more and less than 720 degrees around a support shaft 2D provided at a connecting portion between the base 1 and the support body 2. A connecting portion with the support body 2 is configured as a rotation range restriction portion R of the support body 2 with respect to the base 1. Incidentally, the spotlight 4
Is fixed to the ceiling surface 5 in a suspended state by fixing the base 1 to the surface side of the ceiling surface 5 with screws.

The base 1 is composed of a cylindrical body having an inverted convex shape in a side view, which opens upward, and a bottom plate portion 1A of the base 1 has a through hole 6 formed therein.
Further, in the support body 2, a disc-shaped brim portion 2B is integrally formed on the upper end side of the circular tubular member 2A with one vertical axis P as a common vertical axial center, and on the lower end side of the circular tubular member 2A. The semicircular bulging portion 2C is integrally formed, and the cylindrical support shaft 2D is integrally formed on the upper end surface of the disc-shaped flange portion 2B so as to project therefrom. Further, in the assembled state of the spotlight 4, the support shaft 2D is inserted into the through hole 6 of the base 1.

As shown in FIG. 5, the lamp 3 is constructed by detachably attaching a reflector 10 to a lamp body 9 having a lamp holder 8 for mounting and holding a lamp 7 such as a halogen bulb or a krypton bulb. Further, the support 2 and the lamp 3 are
Between the pair of left and right brackets 9A that are integrally formed at the rear end of the upper surface of the lamp body 9, the bulging portion 2C of the support 2 is provided.
While fitting in, both brackets 9A and bulging portion 2C
And a headed hinge shaft 11 are inserted from the horizontal direction to be connected, and the lamp 3 is configured to be rotatable with respect to the support body 2 about a horizontal axis Q of the hinge shaft 11. .
Of the hinge shaft 11, a cap nut 12 having a knob on the male screw portion on the tip side protruding from one bracket 9A.
Are screwed together, and the cap nut 12 is attached to the bracket 9A.
The bulging portion 2C is fixed to both brackets 9A by tightening to the side.
The lamp 3 is held between the support 2 and the lamp 3 so that the lamp 3 can be frictionally held at an arbitrary rotational position.

Next, a specific structure of the rotation range restricting portion R will be described with reference to FIGS. As shown in FIG. 1, the mounting surfaces H of the disc-shaped collar portion 2B of the support 2 and the bottom plate portion 1A of the base 1 which face each other in the direction along the longitudinal axis P.
1 and H2, on the mounting surface H1 on the support 2 side, about 3 is provided along the circumferential direction centered on the vertical axis P of the support shaft 2D.
The arc-shaped groove 15 is formed in the angle range of 50 degrees. In addition, the mounting surface H2 of the base 1 and the mounting surface H of the support 2
1, the disc-shaped rotation range restricting body 14 has a support shaft 2D through a through hole 14A formed at the center thereof.
A first tongue piece (an example of a first locking piece) 16 that is fitted around the rotation range restricting body 14 and is engaged with the arcuate groove 15 is relatively fitted around the rotation range restricting body 14. The vertical axis P of the support shaft 2D is formed in the arc-shaped groove 15 and is formed at the peripheral edge of the rotation range restricting body 14 at a position facing the first tongue piece 16 in the diametrical direction. An arc-shaped cutout portion (an example of an engaged portion) 18 that opens outward in the diametrical direction is formed in an angular range of about 60 degrees along the circumferential direction that is the center. Further, on the mounting surface H2 on the side of the base 1,
A second tongue piece (an example of a second locking piece) 17 that engages with the cutout portion 18 of the rotation range restricting body 14 and abuts in the rotation direction is provided from the bottom plate portion 1A of the base 1 to the support body 2. Is stamped and formed toward the mounting surface H1. Therefore, in FIG.
As shown in (b), when the support 2 is rotated relative to the base 1 about the longitudinal axis P, the arc-shaped groove 15 of the support 2 and the first of the rotation range restrictors 14 are moved. The relative rotation angle range a of the support body 2 and the rotation range restricting body 14 around the vertical axis P due to the engagement with the tongue piece 16 is restricted to about 330 degrees, and the notch of the rotation range restricting body 14 The second tongue piece 1 of the part 18 and the base 1
Since the relative rotation angle range b around the vertical axis P between the rotation range restricting body 14 and the base 1 by the contact with 7 is restricted to about 40 degrees, the arcuate groove 15 and the first tongue piece. The rotation angle range of the support body 2 with respect to the base 1 is about 370 due to the rotation angle regulation action by the engagement with the 16 and the rotation angle regulation action by the contact between the notch portion 18 and the second tongue piece 17. It is composed every time.

As shown in FIG. 1, of the disk-shaped brim portion 2B of the support 2, the peripheral edge of the mounting surface H1 side, and
An annular peripheral wall portion 13 that covers the outer peripheral side of the rotation range restricting body 14 around the vertical axis P is disposed outward in the diametrical direction of the arcuate groove 15.
Are integrally formed, and in the assembled state of the base 1 and the support body 2, there is a slight gap between the peripheral wall 13 and the bottom plate portion 1A. Therefore, the rotation range restricting body 14 is hardly exposed to the outside through the gap, or even if it is exposed, the amount of exposure is extremely small, so that the appearance design can be improved.

Further, as shown in FIG. 1, the inner diameter of the through hole 6 of the bottom plate portion 1A is formed in a portion of the support shaft 2D of the support 2 which projects to the back side of the bottom plate portion 1A of the base 1. A washer 19 having a larger outer diameter and a corrugated washer (an example of an elastic member) for pressing and biasing the mounting surface H1 of the support body 2 to the mounting surface H2 side of the base via the rotation range regulating body 14.
20 is externally fitted and disposed, and a male screw portion 21 is formed on the outer peripheral surface of the support shaft 2D on the tip end side. A nut 22 is screwed onto the male screw portion 21 to wash the washer 19. The corrugated washer 20 is sandwiched and fixed between the back surface of the bottom plate portion 1A of the base 1 and the nut 22, and the support shaft 2D is prevented from coming out from the through hole 6 of the bottom plate portion 1A of the base 1. ing. Accordingly, the corrugated washer 20 is pressed and deformed in the direction of the vertical axis P by the tightening force of the nut 22, so that the elastic restoring force of the corrugated washer 20 causes the support body 2 to move vertically to the base 1. It is configured so that it can be frictionally held at any rotational position around it.

[Other Embodiments] In the above embodiment, the angular range of the arcuate groove 15 of the support 2 is formed to about 350 degrees, and the angular range of the notch of the rotation range restrictor 14 is set to about 60. However, the present invention is not limited to this configuration and the rotation angle range of the support 2 with respect to the base 1 is about 370 degrees. The arcuate groove 15 is formed within an angle range of less than 360 degrees, and the cutout portion of the rotation range restricting body 14 is formed within an angle range of less than 360 degrees, and as a whole, supports the base 1. Body 2
If the rotation angle range of is equal to or more than 360 degrees and less than 720 degrees, the angle range of the arcuate groove 15 and the angle range of the notch can be freely changed. Also,
By changing the widths of the first tongue piece 16 and the second tongue piece 17 in the rotation direction, the relative rotation angle range a of the support body 2 and the rotation range regulation body 14 about the vertical axis P, and The relative rotation angle range b around the vertical axis P of the rotation range restrictor 14 and the base 1 may be changed. Even in this case, the rotation angle range of the support 2 with respect to the base 1 is configured to be 360 degrees or more and less than 720 degrees.

In the above embodiment, the first locking piece 16
Each of the second locking piece 17 and the second locking piece 17 is composed of a tongue piece formed by stamping from the rotation range restricting body 14 and the base 1, but is not limited to this structure. The locking pieces 16 and 17 may be separately manufactured from the rotation range restricting body 14 or the base 1 and separately attached to the rotation range restricting body 14 or the base 1. In the above embodiment, the engaging portion 18 has a notch, but it may have an arcuate elongated hole centered on the vertical axis P of the support shaft 2D and extending in the circumferential direction. In the above embodiment, the elastic member 20 is constituted by the corrugated washer, but if the elastic force can be exerted in the direction of the vertical axis P by the tightening force of the nut 22, for example, an annular rubber body or coil. It may be a spring. In the above embodiment, the peripheral wall portion 13 that covers the outer peripheral side of the rotation range restricting body 14 is integrally formed with the disc-shaped flange portion 2B of the support body 2. However, the peripheral wall portion 13 is the bottom plate portion 1A of the base 1. It may be formed on the side. In the above-described embodiment, the support 2 is formed in a substantially tubular shape, but the support 2 may be formed by a U-shaped plate having a downward opening posture as shown in FIG. Good.
In this case, the base 1 and the supporting body 2 may be connected by a separately manufactured bolt, and the bolt may also be used as the support shaft 2D. In the above-described embodiment, the base 1 is described as being fixed to the surface of the ceiling surface 5 with screws, but is not limited to this configuration. For example, the surface of the ceiling surface Configured to be slidable with respect to the rails provided in, or a pair of holding pieces that can be elastically held by a table and the like, and a pair that forcibly releases the holding pieces against the elastic force. It may be configured in the shape of an alligator clip with a gripping piece of, or a stand type that can be placed on a table in a stable posture.

It should be noted that although reference numerals are given in the claims for convenience of comparison with the drawings, the present invention is not limited to the structures of the accompanying drawings by the entry.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view of a rotation range restriction unit.

FIG. 2 is a horizontal cross-sectional view at a limit position on one end side in a rotating direction in an operation diagram showing a rotating operation of a rotating range restricting unit,
(B) is a horizontal sectional view at the limit position on the other end side in the rotation direction

FIG. 3 is a sectional view taken along line III-III of FIG.

FIG. 4 is an exploded perspective view of a rotation range restriction unit.

[Fig. 5] Vertical sectional view of spotlight

[Figure 6] Front view of spotlight

FIG. 7 is an exploded perspective view of a rotation range restricting portion of a conventional example.

FIG. 8 is an operation diagram showing a rotation operation of a rotation range restricting portion of a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Base 2 Support body 2D Support shaft 3 Lamp 13 Circumferential wall portion 14 Rotation range regulating body 15 Groove (arc-shaped groove) 16 First locking piece 17 Second locking piece 18 Engaged portion 20 Elastic member 21 Male screw portion 22 Nut P Shaft core H1 mounting surface H2 mounting surface

Claims (5)

[Claims] 1. A support (2) provided with a lamp (3) on a base (1) is rotatable within a range of 360 degrees or more and less than 720 degrees around a support shaft (2D). Of the mounting surfaces (H1), (H2) of the supporting body (2) and the base (1) facing each other, the mounting surface being on the supporting body (2) side. In (H1), an arcuate groove (15) is formed in an angle range of less than 360 degrees along a circumferential direction centered on the axis (P) of the support shaft (2D), and the arcuate groove (15) A rotation range restricting body (14) having a first locking piece (16) engaged therein is provided with a mounting surface (H2) of the base (1) and a mounting surface (H1) of the support body (2). )
And the rotation range restricting body (14) in the rotation range restricting body (14) along the circumferential direction about the shaft core (P). An arcuate engaged portion (18) is formed in an angle range of less than degrees, and a mounting surface (H2) on the side of the base (1) engages with the engaged portion (18). 2 locking pieces (17) are provided, and a peripheral wall portion (13) that covers the outer peripheral side of the rotation range restricting body (14) is formed on the support body (2) or the base (1). A lighting fixture. 2. An elastic member for pressing and urging the mounting surface (H1) of the support (2) to the mounting surface (H2) side of the base (1) through the rotation range restricting body (14). (20)
Is disposed on the back side of the base (1).
The described lighting equipment. 3. The support shaft (2D) is integrally formed with the support body (2), and the elastic member (20) is provided on the tip end side between the support shaft (2D) and the back surface of the base (1). The luminaire according to claim 2, wherein a male screw portion (21) to which a nut (22) for holding and fixing the screw is screwed is formed. 4. The luminaire according to claim 2, wherein the elastic member (20) is formed of a corrugated washer. 5. The tongue piece according to claim 1, wherein the first locking piece (16) is a tongue piece formed by stamping a part of an outer peripheral edge of the rotation range restricting body (14). 3 or 4
The described lighting equipment.