JP4765953B2 - Lighting device - Google Patents

Description

  The present invention relates to a lighting device, for example, a lighting device capable of irradiating an arbitrary direction.

FIG. 9 shows an illuminating device 100 that can irradiate an arbitrary direction conventionally used. In this lighting device 100, a bottomed cylindrical lamp 102 that houses a light source 101, a connecting portion 103 provided in the lamp 102, and a connecting portion 103 connected to each other via an engaging portion 104, A substantially linear arm portion 106 that protrudes outward from the lamp body 102 and has an attachment portion 105 provided at an end portion thereof is provided. The attachment portion 105 is attached to, for example, a ceiling surface in a building room, and the arm portion 106 is rotatably suspended by the rotation support portion 105a. Further, the connecting part 103 of the lamp body 102 and the engaging part 104 of the arm part 106 are rotatably connected via a connecting shaft 107 provided in a direction orthogonal to the axial direction (CL2) of the lamp body 102. Has been.
In other words, the lamp body 102 can be rotated in the vertical direction about the connecting shaft 107, and is attached to be rotatable about the axis CL <b> 1 of the arm portion 106 by the rotation of the arm portion 106.

Therefore, in this lighting device 100, a linear state in which the axis CL2 of the lamp body 102 is parallel to the axis CL1 of the arm portion 106 and is illuminated substantially vertically downward, and an axis line of the lamp body 102 with respect to the axis CL1 of the arm portion 106. When CL2 intersects at a predetermined angle, a bent state (display state in FIG. 9) is generated in which a substantially horizontal side is irradiated from obliquely below.
In such an illuminating device 100, in order to prevent interference between the arm portion 106 and the lamp body 102 in a bent state, a notch for housing the arm section 106 is provided in a part of the lamp body 102 (for example, Patent Documents). 1).
JP 2001-176322 A

By the way, in the conventional lighting device 100, since the notch is also provided on the side surface of the lamp body 102, the notch is exposed in a linear state, and the appearance is impaired.
In order to avoid such an inconvenience, a lighting device provided with a connecting portion on the side surface of the lamp body 102 is widely known. In this case, the arm section 106 is not positioned at the center of the lamp body 102. For this reason, there is a disadvantage that symmetry cannot be obtained in a straight line state and the appearance is impaired.

  The present invention has been made in view of the above-described problems, and an object of the present invention is to provide a lighting device that can select a straight state and a bent state by a lamp body and an arm portion and can obtain a good appearance. Is to provide a device.

  In order to achieve the above-described object, a lighting device according to the present invention includes a bottomed container-shaped lamp body that houses a light source, a connecting portion provided in the lamp body, and an engaging portion on the connecting portion. Via a connecting shaft that is connected and protrudes outward of the lamp body and has a substantially linear arm portion provided with an attachment portion at an end thereof, and orthogonal to the axial direction of the lamp body An illumination device in which the lamp body and the arm portion are relatively rotatable by connecting the connecting portion and the engaging portion, wherein the engaging portion is separated from the axis of the arm portion by a predetermined dimension. It is provided on the side.

In the illuminating device configured as described above, the connecting portion inside the bottomed container-shaped lamp that accommodates the light source is supported by the engaging portion of the arm portion via the connecting shaft so as to be vertically rotatable, And the attachment part of an arm part is supported so that rotation is possible. Thereby, arbitrary directions can be irradiated.
Here, the engaging portion of the arm portion that rotatably supports the lamp body is provided on the side of the lamp body at a predetermined distance from the axis of the arm portion. ), It is possible to reduce the notch where the arm portion penetrates through the bottom portion of the lamp body and moves in and out as the lamp body rotates. Thereby, a good appearance can be obtained.
The predetermined distance refers to a distance that can be set so that the arm portion penetrates only the bottom of the lamp body while the lamp body is rotated 90 degrees from the vertical position to the horizontal position.

  The lighting device of the present invention is the lighting device according to the first aspect of the present invention, wherein the engaging portion is provided on a side of a predetermined distance from the axis of the lamp, and the axis of the lamp and the arm These axes can be arranged along the same line.

In the lighting device configured in this way, the axis of the lamp and the axis of the arm can be arranged on the same line, that is, in the center of the lamp, so that the lamp is in a straight state extending straight from the arm. Appearance can be improved.

  Furthermore, in the lighting device of the present invention according to the second feature of the present invention described above, the lamp body is substantially cylindrical, a notch including the axis of the lamp body is provided on the bottom surface thereof, and the arm portion is the lamp. It is introduced into the body.

  In the illuminating device configured as described above, the arm portion is introduced into the lamp body from the notch provided on the bottom surface including the axis of the lamp body, so there is no direction around the axis of the lamp body and the appearance is good. Can be anything.

  In the lighting device of the present invention according to the second feature of the present invention, the lamp body is provided with a notch in which the arm portion is introduced into the lamp body on a rectangular bottom surface, and the notch is formed on the bottom surface. It is formed in the substantially orthogonal direction with respect to one peripheral edge.

  In the illuminating device configured as described above, the arm portion is introduced into the lamp body from a notch formed in a direction substantially orthogonal to the peripheral edge of the bottom surface of the lamp body. It is possible and the length of the arm can be shortened.

  According to the present invention, the engaging portion of the arm portion that rotatably supports the lamp body is provided on the side of the lamp body at a predetermined distance from the axis of the arm portion. There is no need to provide a notch on the side surface of the lamp body, and an effect that a good appearance can be obtained is obtained.

DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments according to the present invention will be described in detail with reference to the drawings.
FIG. 1A is a side view showing the lighting device according to the first embodiment of the present invention in cross section, FIG. 1B is a plan view of the same, and FIG. FIG. 3 is a side view showing the engaging portion in the mounting structure of the lamp body and the arm portion.

As shown in FIG. 1, the lighting device 10A according to the first embodiment of the present invention has a bottomed cylindrical lamp body 12 that is open (12d) at one end and accommodates a lamp 11 that is a light source. . A mounting plate 12c parallel to the bottom portion 12a is attached at an intermediate position inside the lamp body 12, and a socket 17 for attaching the light source 11 and supplying power is attached to the center of the opening side of the mounting plate 12c. Therefore, the lamp 11 can be mounted by being inserted from the opening 12 d of the lamp body 12 and screwed into the socket 17.
It is also possible to attach a transparent cover to the opening 12d of the lamp body 12.

A substantially linear arm portion 13 is attached to the lamp body 12 so as to be rotatable except for an end portion. The bottom 12a of the lamp body 12 is provided with a notch 12b for projecting the arm 13 outward, and an inner surface of the bottom 12a is provided with a connecting portion straddling the notch 12b. For example, as shown in FIG. 2, the connecting portion has a pair of connecting plates 14, 14 having an overall L shape, and the base 14 a is attached to the bottom portion 12 a of the lamp body 12 by a screw 14 b. A connecting shaft 15 is provided between the pair of connecting plates 14 and 14.
The pair of connecting plates 14 and 14 and the connecting shaft 15 are integrally formed in advance, and the base 14a of the connecting plate 14 can be attached to the bottom 12a of the lamp body 12.

One end of the arm portion 13 (the lower end in the solid line in FIG. 1A) is bent at a substantially right angle, and an engagement portion for attaching the arm portion 13 to the connecting shaft 15 is provided at the tip. .
As shown in FIG. 3, the engaging portion has a pair of mounting plates 16 and 16 attached to the tip of the arm portion 13, for example, and the mounting plate 16 has a circular cross-sectional arm provided at one end. Corresponding to the part 13, it has a partially arcuate fixing part 16 a, a substantially semicircular gripping part 16 b for gripping the connecting shaft 15, and a fastening part 16 c provided at the other end. And it has the volt | bolt nut 16d for clamp | tightening the fastening part 16c and holding to the connection shaft 15 so that rotation is possible.

That is, the arm portion 13 is rotatably attached to the lamp body 12 by gripping the connecting shaft 15 by the attachment plate 16. For this reason, the mounting plate 16 which is an engaging part is provided in the side away from the axis line CL1 of the arm part 13 by the predetermined dimension.
In addition, the resistance in rotation of the arm portion 13 can be adjusted by the tightening force of the bolt / nut 16d.

  Further, the other end of the arm portion 13 (the upper end in the solid line in FIG. 1A) is a mounting portion that can move along a wiring duct (not shown) provided on a ceiling surface that is a mounting surface, for example. A plug 18 is attached, and this plug 18 supports the arm portion 13 through a rotation support portion 19 so as to be rotatable around its axis CL1.

As described above, according to the illuminating device 10A according to the first embodiment described above, the connecting plate 14 inside the lamp body 12 in which the lamp 11 is accommodated is vertically moved by the mounting plate 16 of the arm portion 13 via the connecting shaft 15 (see FIG. 1 (see the arrow in FIG. 1A), and the arm portion 13 is supported by the plug 18 so as to be rotatable around the axis CL1 of the arm portion 13. Thereby, arbitrary directions can be irradiated. Further, the mounting plate 16 of the arm portion 13 that rotatably supports the lamp body 12 is provided inside the lamp body 12 on a side that is a predetermined distance L away from the axis line CL1 of the arm section 13. The lamp body 12 can be rotated only by the notch 12b provided in the bottom portion 12a without providing a notch in the side surface (circumferential surface) of the twelve. Thereby, the favorable external appearance property without directionality around the axis line CL2 of the lamp body 12 can be obtained.
The predetermined distance L means that the arm 13 is rotated 90 degrees from a vertical position (indicated by a two-dot chain line in FIG. 1A) in which the arm 13 is straightly extended in the direction of the axis CL2 of the lamp body 12. While rotating to a horizontal position (indicated by a solid line in FIG. 1A), the arm portion 13 penetrates only the notch 12b of the bottom portion 12b of the lamp body 12 without interfering with the side surface of the lamp body 12. Is the distance from the axis CL2 of the lamp body 12.

Next, 2nd Embodiment of the illuminating device of this invention is described.
FIG. 4 (A) is a side view showing a lighting device according to a second embodiment of the present invention in section, and FIG. 4 (B) is a plan view. In addition, the same code | symbol is attached | subjected to the site | part which is common in the site | part mentioned in the 1st Embodiment, and the overlapping description is abbreviate | omitted.

As shown to FIG. 4 (A), in the illuminating device 10B which concerns on 2nd Embodiment, bending angle (theta) in the lower end of the arm part 13 is smaller than a right angle. For example, in FIG. 4A, θ = 45 degrees.
As described above, by reducing the bending angle θ, in addition to the effect of the lighting device 10A according to the first embodiment described above, the range in which the arm portion 13 rotates within the lamp body 12 is limited to the vicinity of the bottom portion 12a. Therefore, the space in the lamp body 12 can be effectively used.
As the bending angle θ is reduced, the size of the notch 12b provided only in the bottom 12a of the lamp body 12 is increased, so there is a limit to reducing the bending angle θ.

Next, 3rd Embodiment of the illuminating device of this invention is described.
FIG. 5A is a side view showing the lighting apparatus according to the first embodiment of the present invention, and FIG. 5B is a plan view. In addition, the same code | symbol is attached | subjected to the site | part which is common in the site | part mentioned above in 1st and 2nd embodiment, and the overlapping description is abbreviate | omitted.

As shown in FIG. 5A, in the lighting device 10C according to the third embodiment, the lower end portion of the arm portion 13 is a straight portion having a length L that linearly extends from the center of the connecting shaft 15 that is the center of rotation. 13a and a bent shape having a circular arc portion 13b bent at a right angle from the front end of the straight portion and then bent 90 degrees with a radius L and turned back in the opposite direction.
In this way, by bending the end portion of the arm portion 13, in addition to the effect of the lighting device 10 </ b> A according to the first embodiment described above, the notch 12 b formed in the bottom portion 12 a is approximately near the outer diameter of the arm portion 13. Therefore, the appearance can be improved.

Next, 4th Embodiment of the illuminating device of this invention is described.
6A is a cross-sectional view showing a lighting device according to a fourth embodiment of the present invention, FIG. 6B is a perspective view of a connecting portion viewed from the direction B in FIG. 6A, and FIG. (E) is a front view showing the appearance of the lighting device, etc. FIG. 8 (A) is a front view showing the interior of the lamp body, and FIG. 8 (B) is a side view of the same. In addition, the same code | symbol is attached | subjected to the site | part which is common in the site | part mentioned above in 1st-3rd embodiment, and the overlapping description is abbreviate | omitted.

  As illustrated in FIGS. 6 to 8, the illumination device 10 </ b> D according to the fourth embodiment includes a tray-shaped lamp body 12 </ b> D having a wall-shaped recess 25. That is, the lamp body 12D includes a square flat plate-like bottom plate 21 and a wall plate 23 made of, for example, PBT resin having excellent heat resistance that can be fitted to the outer periphery of the four sides of the bottom plate 21. A recess 25 is formed inside the plate 23. The irradiation surface formed at the upper end of the wall plate 23 is provided with a resin panel 24 made of, for example, acrylic milk white having a light diffusion name for making the lamp image (brightness balance) uniform. It is desirable to form the cover 22 with the resin panel 24.

  The bottom plate 21 has a square planar shape, and a rectangular notch 26 is provided at the center as shown in FIG. As shown in FIG. 6B, the attachment device of the arm portion 13 to the lamp body 12D is provided with a rectangular frame around the bearing, and a bearing having a connecting shaft 15 as a connecting portion on one side thereof. The pipe-shaped arm portion 13 made of, for example, aluminum die casting is integrally attached to the connecting shaft 15. The bearing 27 is provided with an adjusting screw 27a for adjusting the rotational force between the connecting shaft 15 and the bearing 27. The adjusting screw 27a is visible from the outside through the notch 26 and can be adjusted using a screwdriver. Yes.

  A rotation support 19 is attached to the tip of the arm 13 via a decorative nut 28, and a plug 18 is attached to the tip of the rotation support 19. The rotation support portion 19 is provided with a lock for preventing the plug 18 from coming off (for prevention of rotation). When the lock is removed from the wiring duct (not shown), the lock provided on the outer peripheral surface of the rotation support portion 19 is provided. An operation for pulling down the release button 19a is required.

  As shown in FIG. 6A, a lighting device (electronic ballast) 29 is attached to the upper part of the inner surface of the bottom plate 21, and a spiral fluorescent lamp 31 as a light source is attached below the lighting device 29. Yes. Therefore, the center of the spiral fluorescent lamp 31 is located below the center of the lamp body 12D. The above-described cover 22 is detachably attached to a mounting portion 29 a provided on the upper surface of the lighting device 29 with a screw 32.

  As shown in FIG. 8 (A), the spiral fluorescent lamp 31 is formed in a spiral shape with the center of one straight circular tube as the center, and sockets with caps at both ends attached to the bottom plate 21. 35, 35 can be mounted. It is desirable that the socket 35 be separated from the center of the spiral fluorescent lamp 31 as much as possible to prevent a high temperature. In addition, it is desirable to arrange the wiring from the lighting device 29 so as to be as short as possible.

  As shown in FIG. 6A, the spiral fluorescent lamp 31 is attached to an attachment plate 33 that is a reflection plate attached to the inner surface of the bottom plate 21 of the lamp body 12D. The attachment plate 33 is attached to the bottom plate 21 so that the front surface 31a of the spiral fluorescent lamp 31 and the front surface 29b of the lighting device 29 are positioned on substantially the same plane. Thereby, the range which becomes a shadow by the lighting device 29 is reduced. In addition, a spring member 35 is provided on the lower side of the mounting plate 33 so that when the cover 22 is fitted to the bottom plate 21, it can be mounted together with the screws 32 without rattling.

  As shown in FIG. 6A, the axis CL2 of the square lamp body 12D and the axis CL1 of the arm section 13 are completely coincident with the lower end side of the arm section 13 being accommodated inside the lamp body 12D. The lighting device 29 can be arranged at the lower part or the side part inside the lamp body 12D. However, by arranging the lighting device 29 at the upper part, the electric wire inserted from the plug 18 into the tube of the arm part 13 is connected to the lighting device 29. In doing so, the length of the electric wire can be minimized. Thereby, the lamp body 12D can be made compact in a state where the lighting device 29 is built in the lamp body 12D.

  Since the lighting device 29 is a heavy object and the lighting device 10D is attached to a wiring duct (not shown) provided on the wall or ceiling via the plug 18, a large moment is generated in the wiring duct depending on the arrangement of the lighting device 29. Will change. Accordingly, it is desirable that the lighting device 29 be as close to the position of the plug 18 as possible because the moment can be reduced.

  That is, as shown in FIG. 6A, when the lighting fixture 10D is suspended from the ceiling and the irradiation surface is vertical, the magnitude of the moment due to the weight of the lighting device 29 is proportional to the distance L1. This distance L1 is the same regardless of where the lighting device 29 is disposed on the bottom plate 21 of the lamp body 12D. On the other hand, when it is attached to the wall and the irradiation surface is horizontal, the magnitude of the moment due to the weight of the lighting device 29 is proportional to the distance L2. In order to make the distance L2 the smallest, it is effective to arrange the lighting device 29 in the upper part in the lamp body 12D.

  If the lighting device 29 is arranged on the side in the lamp body 12D, a moment acts in the direction of twisting the arm 13 when it is attached to the ceiling or to the wall, which is not preferable. Further, the shorter the length of the arm portion 13, the smaller the moment and the better the design aesthetics. However, the length is set in consideration of the operability of attaching to the wiring duct of the lighting device.

  Further, the rotational force acting on the connecting shaft 15 from the arm portion 13 depending on the fixed angle of the lamp body 12D (that is, the angle formed by the lamp body 12D and the arm portion 13) causes the center of gravity of the lighting device 29 and the center of the connecting shaft 15 to move. Is proportional to the distance L3. Therefore, it is desirable to arrange the lighting device 29 near the connecting shaft 15 to reduce the distance L3. Thereby, the fluctuation of the mounting angle caused by the weight of the lighting device 29 can be reduced.

  In the case of wall mounting, a rotary force around the axis line CL1 acts between the plug 18 and the arm portion 13 regardless of the angle of the lamp body 12D. Since the plug 18 supports the arm portion 13 through the rotation support portion 19 so as to be rotatable around the axis CL1, the lamp body 12D tends to rotate. For this reason, a decorative nut 28 is provided between the plug 18 and the arm portion 13 so that the arm portion 13 and the plug 18 can be retightened to prevent the lamp 12D from rotating. The reliability of fastening is improved. It is desirable to engrave knurling on the outer peripheral surface of the decorative nut 28 so as to prevent slipping.

  As described above, according to the illuminating device 10D described above, even when a fluorescent lamp provided with the lighting device 29 that is a heavy object is used as a light source, the same operations and effects as those of the above-described embodiments can be obtained. In addition, in the lamp body 12D mentioned above, although the rectangular thing was illustrated, the shape is not restricted to this.

In addition, the illuminating device 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 has been described in which the arm portion 13 is movably attached to a wiring duct provided on a ceiling surface or the like that is an attachment portion. .
Moreover, in each embodiment mentioned above, although the case where the illuminating device 10 was suspended and provided from the ceiling etc. was demonstrated, it is also possible to provide in a wall or a floor.
Moreover, although the cross-sectional shape of the lamp body 12 and the cross-sectional shape of the arm part 13 are circular, it is not limited thereto.

  As described above, in the lighting device according to the present invention, the engaging portion of the arm portion that rotatably supports the lamp body is provided on the side of the lamp body at a predetermined distance from the axis of the arm portion. Therefore, it is not necessary to provide a notch on the side surface of the lamp body as in the conventional case, and it has an effect that a good appearance can be obtained and is useful as a lighting device that can irradiate any direction. It is.

(A) is a side view showing the lighting device according to the first embodiment of the present invention in cross section, and (B) is a plan view of the same. The top view which shows the connection part in the attachment structure of a lamp body and an arm part Side view showing the engaging portion in the mounting structure of the lamp body and the arm portion (A) is a side view showing the lighting device according to the second embodiment of the present invention in cross section, and (B) is a plan view of the same. (A) is a side view showing a lighting device according to a third embodiment of the present invention in cross section, and (B) is a plan view of the same. (A) is a side view showing an illuminating device according to a fourth embodiment of the present invention in cross section of a lamp body, (B) is a perspective view of a connecting portion from the direction of arrow B in (A). (A)-(E) are front views showing the appearance of the lighting device, etc. (A) is a front view showing the interior of the lamp body, and (B) is a side view of the same. Sectional drawing which shows the conventional illuminating device

Explanation of symbols

10A, 10B, 10C, 10D Illumination device 11 Lamp (light source)
12 Lamp body 13 Arm part 14 Connection plate (connection part)
15 Connecting shaft 16 Mounting plate (engagement part)
18 Plug (Mounting part)
25 Recessed with wall 27 Bearing (connecting part)
31 Spiral fluorescent lamp (light source)
CL1 Arm axis CL2 Lamp body axis

Claims (1)

A bottomed container-shaped lamp that houses a spiral fluorescent lamp and a lighting device ;
A connecting portion provided in the lamp body;
A substantially linear arm portion connected to the connecting portion via an engaging portion and protruding outward of the lamp body, and having an attachment portion at an end portion;
The lighting device is a lighting device in which the lamp body and the arm portion are relatively rotatable by connecting the connecting portion and the engaging portion via a connecting shaft orthogonal to the axial direction of the lamp body. And
The engaging portion is provided on a side that is separated from the axis of the arm by a predetermined dimension, and is provided on a side that is separated from the axis of the lamp by a predetermined dimension.
The axis of the lamp body and the axis of the arm can be arranged along the same line,
The lamp body is provided with a notch in which the arm portion is introduced into the lamp body on a rectangular bottom surface, and the notch is formed in a direction substantially orthogonal to one peripheral edge of the bottom surface,
The center of the spiral fluorescent lamp is located below the center of the lamp body,
The lighting device in which the lighting device is disposed near the connecting shaft at an upper portion inside the lamp body .

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