JP7196991B2 - lighting equipment - Google Patents

Description

The present invention relates to lighting fixtures.

2. Description of the Related Art In a lighting fixture such as a street light that is attached to the tip of a pole erected vertically from the ground, poles with different diameters are widely used instead of one diameter. In recent years, there has been a demand for lighting fixtures that can be used with poles of a plurality of different diameters.

As a conventional technique for accommodating multiple types of diameters with one mounting member, there is known a technique in which projections for receiving pipes with different diameters are provided on the inner circumference of a tubular body to which pipes with different diameters are connected. (See, for example, Patent Document 1).
In recent years, a lighting fixture is provided with a pole receiving part into which the tip of the pole is inserted, and a connecting structure like the protruding part of Patent Document 1 is provided on the inner circumference of this pole receiving part, so that the common lighting fixture can There is also known a technique that enables fixing to poles with different diameters (see, for example, Non-Patent Documents 1 to 3 and Patent Document 2). According to this technology, there is no need to prepare a lighting fixture for each diameter of the existing pole, and installation cannot be performed at the installation site of the lighting fixture because the pole receiving part of the lighting fixture does not match the diameter of the pole. situation can be avoided.

JP-A-56-6984 JP 2017-162685 A

LED mall light KAELUMINA product catalog, [online], June 2016, Panasonic Corporation, [searched on September 14, 2017], Internet <URL: http://panasonic.icata.net/iportal/ CatalogDetail.do?method=initial_screen&type=clcsr&volumeID=PEWJ0001&catalogID=4092690000> Mall Light XY7792LE9 Product Specifications, [online], Panasonic Corporation, [Searched on September 14, 2017], Internet <URL: http://www2.panasonic.biz/es/catalog/lighting/products/detail/ shouhin.php?at=category&ct=shisetsu_catalog&id=S00123121&hinban=XY7792＞ Mall Light Installation Manual Instruction Manual "For Storage" Instruction Manual No. NNY22650-TA, NNY22650-TB, [online], Panasonic Corporation, [searched on September 14, 2017], Internet <URL: http://www2.panasonic.biz/es/catalog/lighting/products/detail /shouhin.php?at=category&ct=shisetsu_catalog&id=S00123121&hinban=XY7792＞

When the technology disclosed in Patent Document 1 is applied to a lighting fixture to provide a pole receiving portion with a multi-stage concave portion, only the leading end of the pole with each diameter is supported by the lighting fixture. For example, when a pole with the thinnest diameter that can be applied to a lighting fixture provided with multiple recesses is attached to the pole receiving portion, the tip of this pole abuts against the innermost recess of the multiple recesses. The pole receiving part is supported by the pole by pressing the circumference of the tip of the pole with a fixing screw provided on the side. On the other hand, when the pole with the largest diameter is attached to the pole receiving part, the tip of this pole hits the stepped surface closest to the opening of the multi-stepped recess, so the length of the pole entering the lighting fixture is the shortest. . The pole receiving portion is supported by the pole by pressing the periphery of the pole tip portion with a fixing screw provided on the side surface of the corresponding recess.

In either case, since the point supported by the fixing screw and the tip of the pole are close to each other, if a force (bending moment) that tends to tilt the lighting fixture due to wind blows is applied to the fixture, the position where the fixing screw of the pole hits It is conceivable that a very large stress is generated in the pole and deforms the pole.
In addition, when a street light having a cylindrical mounting portion is attached to a cylindrical pole, generally at least three support portions (preferably every 120 degrees) around the tip of the pole are provided to facilitate the mounting of the pole and lighting equipment. It can be supported by matching the central axis with the part. However, in old poles, deformation of the pole may cause the end face of the pole to become non-flat, resulting in local dents. Also, the ends of the pole can be deformed and distorted out of circle. In this case, in a street light employing a three-point contact support structure, the pole may not evenly contact the pole mounting support, resulting in misalignment or insufficient mounting strength.

The present invention can handle multiple types of diameters with a single unit, suppress the tilt of the lighting fixture when it is attached to the pole, and suppress misalignment when fixing to the pole even if the tip of the pole is distorted. The purpose is to provide a lighting fixture that can

The present invention provides a lighting fixture having a cylindrical pole receiving portion into which a tip of a pole is inserted, wherein the inside of the pole receiving portion has a stepped diameter in order from the pole insertion end side into which the pole is inserted. is provided with three or more stepped portions with which the tip of the pole engages, the three or more stepped portions form a multi-stepped cylindrical shape, and the tip of each stepped portion is an annular flat surface, The pole receiving portion is provided with a plurality of fixing portions for fixing the pole with screws at the positions of the stepped portions closest to the pole insertion end . The stepped portion positioned at the insertion end is characterized in that the length along the pole insertion direction is greater than the sum of the lengths of all the other steps along the pole insertion direction .

In the lighting device according to the present invention, the pole receiving part can insert a pole having a diameter larger than that of each of the stepped parts, and further has an outer shell that accommodates the three or more stepped parts inside. , characterized in that

The present invention is characterized in that, in the above-described lighting equipment, the outer shell is attached to the equipment main body and formed to have a length covering all the stepped portions from the equipment main body.

ADVANTAGE OF THE INVENTION According to this invention, misalignment at the time of fixing a pole can be suppressed.

It is a perspective view showing composition of a streetlight concerning an embodiment of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS It is a trihedral view which shows the whole streetlight structure, (A) is a front view, (B) is a top view, (C) is a bottom view. FIG. 3 is a cross-sectional view taken along line III-III of FIG. 2(A); It is a perspective view which shows the whole structure of a pole receiving part. It is a side view of a pole receiving part. FIG. 6 is a sectional view taken along the line VI-VI of FIG. 5; It is a figure which shows the structure of an adapter, (A) is a top view, (B) is a rear view.

Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 is a perspective view showing the overall configuration of a street light 1 according to this embodiment. FIG. 2 is a trihedral view showing the overall structure of the street light 1, FIG. 2(A) being a front view, FIG. 2(B) being a top view, and FIG. 2(C) being a bottom view.
A street light 1 is a lighting fixture that is used by being fixed to the tip of a pole 2 erected on the ground or the like. , and the pole receiving part 4 and the instrument body part 6 are fixed with a screw 8. - 特許庁

FIG. 3 is a cross-sectional view taken along line III--III in FIG. 2(A).
The fixture main body 6 has a translucent case 12 that houses an arbitrary light source 10 such as an LED or a discharge lamp, and a pole receiving section 4 . The shape and structure of the instrument body 6 are arbitrary.

4 is a perspective view showing the overall configuration of the pole receiving portion 4, and FIG. 5 is a side view of the pole receiving portion 4. As shown in FIG. 6 is a view of the pole receiving portion 4 taken along the line VI-VI in FIG.
The pole receiving part 4 has a structure that can be fixed to a plurality of poles 2 having different tip diameters, and as shown in FIGS. An adapter 22 and a plurality of fixing portions 24 for fixing the pole receiving portion 4 to the pole 2 are provided. The outer shell 20 and the adapter 22 are formed by casting, for example, aluminum alloy or the like.

As shown in FIG. 6, the outer shell 20 is a cylindrical member having an inner diameter D4, and an upper portion 20U thereof is integrally formed with a portion for fixing the instrument main body 6 with the screw 8 described above.
The adapter 22 is a cylindrical member provided inside the outer shell 20 when the street light 1 is fixed to the pole 2 having a diameter smaller than the inner diameter D4 of the outer shell 20, and is freely attachable to the outer shell 20. It is As shown in FIG. 6, the inner surface of the adapter 22 has a plurality of stepped portions 28-3, 28-2, and 28 whose inner diameters are gradually reduced to inner diameters D3, D2, and D1 from the pole insertion end 4A side. -1 is provided.

7A and 7B are diagrams showing the configuration of the adapter 22, FIG. 7A being a top view and FIG. 7B being a rear view.
As shown in FIG. 6, the adapter 22 has a multistage cylindrical shape whose diameter gradually decreases from the pole insertion end 4A to the upper portion 22U corresponding to the diameters of the inner stepped portions 28-3, 28-2, and 28-1. and an engaging convex portion 40 is formed on the upper portion 22U.
As shown in FIG. 6, the front end 20A of the outer shell 20 is formed with an engaging hole 42 with which the engaging protrusion 40 is engaged. positions the adapter 22 inside the shell 20 by . Further, as shown in FIG. 7(A), the engaging projection 40 is formed with a projecting portion 40A projecting in the radial direction. inside the adapter 22 is positioned non-rotatably around the central axis.
Furthermore, as shown in FIG. 7(B), a plurality of contact protrusions 44 are formed on the outer peripheral surface of the adapter 22 so as to protrude in the radial direction and extend in the pole insertion direction E. As shown in FIG. When the adapter 22 is positioned inside the outer shell 20, as shown in FIG. backlash is prevented.

In the pole receiving portion 4, as shown in FIG. 6, the tip 20A of the outer shell 20 and the tips 28A1, 28A2 and 28A3 of the stepped portions 28-1, 28-2 and 28-3 of the adapter 22 are , and are formed on an annular plane having diameters corresponding to the inner diameters D4, D1, D2, and D3. In addition, the inner peripheral surface 20B of the outer shell 20 and the inner peripheral surfaces 28B1, 28B2 and 28B3 of the stepped portions 28-1, 28-2 and 28-3 of the adapter 22 are respectively formed with tips 20A, 28A1, 28A2 and 28A3. It is formed in a tapered shape that widens slightly from the side of the pole insertion end 4A.

The fixing part 24 fixes the pole receiving part 4 to the pole 2 by screwing, and as shown in FIG. , 120 degree intervals). On the outer peripheral surface of the outer shell 20, threaded holes 32 are formed at the positions of the respective fixing portions 24 to engage with the pole fixing screws 30, and the positions corresponding to the threaded holes 32 of the adapter 22 are shown in FIG. As shown in A), a through hole 46 through which the pole fixing screw 30 is passed is formed at the position of the fixing portion 24 . A pole fixing screw 30 is screwed into each screw hole 32, and the tip portion 30A of each pole fixing screw 30 abuts against the outer peripheral surface of the pole 2 and tightens the pole 2 from the outside, so that the pole receiving portion 4 is secured to the pole. Set to 2.
Further, in the adapter 22, a contact protrusion 44 is formed at the position of the fixing portion 24, and a through hole 46 is formed in the contact protrusion 44, so that the through hole 46 of the adapter 22 can be removed from the outside. The screw holes 32 of the shell 20 are substantially communicated with each other, so that the pole fixing screws 30 can be easily screwed.

In this embodiment, each of the fixing portions 24 is located near the pole insertion end 4A, more specifically, within a predetermined height L range along the pole insertion direction E from the pole insertion end 4A, as shown in FIG. located inside. The upper end La of this height L is the position of the tip 28A3 of the stepped portion 28-3 closest to the pole insertion end 4A among the stepped portions 28-1, 28-2, and 28-3 of the adapter 22, or It is set closer to the pole insertion end 4A than the position.

Under such a configuration, when the street light 1 is fixed to the pole 2 having the diameter D4 at the tip, the pole 2 is inserted into the outer shell 20 without using the adapter 22, and the tip has diameters D1, D2 and D3. When the street light 1 is fixed to one of the poles 2, an adapter 22 is provided inside the outer shell 20 and the pole 2 is inserted into the adapter 22. - 特許庁Then, the tip of the inserted pole 2 is abutted against the outer shell 20 or the adapter 22, and the end surface of the tip of the pole 2 is aligned with the tip 20A of the outer shell 20 or the stepped portions 28-1, 28-2 of the adapter 22. It is brought into contact with the tips 28A1, 28A2 and 28A3 of 28-3. Next, the pole fixing screws 30 are screwed into the threaded holes 32 of the plurality of fixing parts 24 to fix the pole receiving part 4 to the pole 2 .

In this pole fixing structure, since the fixing portion 24 is provided within the range of the height L, the fixing portion 24 provided within the range of the height L can fix the pole 2 regardless of the pole 2 having a different diameter. 2 is fixed, work uniformity is achieved, and workability is improved.
In addition, since the pole 2 is fixed at a position distant from the engagement points (that is, the tips 20A, 28A1, 28A2, and 28A3) at the tip of the pole 2, for example, the fixing portion 24 is placed at a position higher than the upper end La of the height L (pole insertion position). Stable fixation can be realized compared to the configuration provided at a position distant from the end 4A.
Furthermore, since the adapter 22 is not used when the street light 1 is fixed to the pole 2 having the largest diameter, the tip of the pole 2 can be inserted up to the tip 20A of the outer shell 20 and fixed. When the steps are provided directly on the inner surface of the outer shell 20 following the conventional technique, the insertion dimension of the thickest pole 2 (the amount by which the tip of the pole 2 enters the outer shell 20) becomes the smallest. The pole 2 can be supported more stably as the "intrusion ratio", which is the value obtained by dividing the insertion dimension of the pole 2 by the diameter of the pole 2, is larger. That is, in the prior art, if the streetlight is attached to the thickest pole 2, the "intrusion ratio" becomes the smallest and the attachment becomes unstable. On the other hand, by adopting the structure of the present invention, compared with the case where the stepped portion is directly provided on the inner surface of the outer shell 20, the "penetration ratio" can be increased, and the installation of the street light 1 on the thick pole 2 can be stabilized. be able to.

When the pole 2 comes into contact with the tips 20A, 28A1, 28A2, and 28A3 of the pole receiving portion 4 due to distortion of the tip of the pole 2, the axial center of the pole 2 is aligned with the central axis C of the outer shell 20 or the adapter 22. Even if misalignment occurs, that is, misalignment from the state shown in FIG. By receiving, the state of contact with the end face of the pole 2 does not change depending on the orientation of the street light 1, and the pole 2 can be stably supported. In addition, since the inner wall around the end surface is a cylindrical side surface, even if the end of the pole 2 is not perfectly circular, the deviation of the center axis between the pole 2 and the mounting portion of the street light 1 can be minimized.

Here, in the pole receiving portion 4 of the present embodiment, as shown in FIG. 3, the fixing portions 24 are arranged at three substantially equal intervals L1, L2, and L3 along the pole insertion direction E. . Looking at the circumferential direction of the outer shell 20, fixing portions 24 are provided at two locations, which are shifted by 120 degrees in the circumferential direction, at the central location L2 among the three locations L1, L2, and L3. In this manner, the fixed portion 24 provided on the portion L1 or the portion L3 and the two fixed portions 24 provided on the portion L2 are spaced substantially equidistantly around the central axis of the pole receiving portion 4. By providing the three positions, the insertion amount of the pole fixing screw 30 of each fixing portion 24 can be appropriately adjusted, and the above-described misalignment can be suppressed with high accuracy. Moreover, since the pole fixing screw 30 is arranged at a position sufficiently spaced from the tip of the pole 2, it is easy to suppress the inclination of the street light 1. - 特許庁

Of the fixing portions 24 provided at three locations L1, L2, and L3, a set of fixing portions 24 at locations L1 and L3 at both ends in the pole insertion direction E are arranged in the pole insertion direction E as shown in FIG. Since they are provided on the same straight line, screwing is facilitated. In addition, since the point L2 is located between the points L1 and L3, it is easy to adjust the inclination of the street light 1 when attaching the street light 1 to the pole 2 . Furthermore, since the distance between the location L1 and the location L3 is large, the pole fixing screw 30 solves the above-mentioned technical problem that the force (bending moment) that tends to tilt the street light 1 when the wind blows is applied to the fixture. It is possible to reduce the stress that occurs at the contact point.

As described above, according to this embodiment, the following effects are obtained.

A plurality of fixing portions 24 for fixing the pole 2 are provided on the pole receiving portion 4 at the position of the stepped portion 28-3 closest to the pole insertion end 4A, that is, in the range of height L. As shown in FIG.
As a result, the same fixing portion 24 is used to fix the poles 2 regardless of the diameter of the poles 2, so that the uniformity of work can be achieved and the workability can be improved. In addition, since the pole 2 is fixed at a position distant from the engaging portion at the tip thereof, stable fixation can be realized.
In addition, since the pole 2 is fixed at a position away from the engagement points (that is, the tips 20A, 28A1, 28A2, and 28A3) at the tip of the pole 2, for example, the fixing portion 24 is positioned at a position higher than the upper end La of the height L (pole insertion end). 4A), stable fixation can be achieved.
Furthermore, when the street light 1 is fixed to the pole 2 having the largest diameter, the tip of the pole 2 can be inserted to the tip 20A of the outer shell 20 and fixed. When the steps are provided directly on the inner surface of the outer shell 20 following the conventional technique, the insertion dimension of the thickest pole 2 (the amount by which the tip of the pole 2 enters the outer shell 20) becomes the smallest. The pole 2 can be supported more stably as the "intrusion ratio", which is the value obtained by dividing the insertion dimension of the pole 2 by the diameter of the pole 2, is larger. That is, in the prior art, if the streetlight is attached to the thickest pole 2, the "intrusion ratio" becomes the smallest and the attachment becomes unstable. On the other hand, by adopting the structure of the present invention, compared with the case where the stepped portion is directly provided on the inner surface of the outer shell 20, the "penetration ratio" can be increased, and the installation of the street light 1 on the thick pole 2 can be stabilized. be able to.
When the pole 2 comes into contact with the tips 20A, 28A1, 28A2, and 28A3 of the pole receiving portion 4 due to distortion of the tip of the pole 2, the axial center of the pole 2 is aligned with the central axis C of the outer shell 20 or the adapter 22. Even if misalignment occurs, that is, misalignment from the state shown in FIG. By receiving, the state of contact with the end face of the pole 2 does not change depending on the orientation of the street light 1, and the pole 2 can be stably supported.
In addition, in this embodiment, since the inner wall around the end surface is a cylindrical side surface, even if the end of the pole 2 is not perfectly circular, the center axis deviation between the pole 2 and the mounting portion of the street light 1 can be minimized. can be suppressed.

In this embodiment, since the fixing portions 24 are arranged at regular intervals around the central axis K of the pole receiving portion 4, the poles 2 can be fixed evenly in the circumferential direction.

In this embodiment, the fixing portions 24 are arranged at three equal intervals L1, L2, and L3 along the pole insertion direction E. Therefore, the insertion amount of the pole fixing screw 30 of each of these fixing portions 24 can be appropriately adjusted. misalignment can be suppressed more accurately. Moreover, since the pole fixing screw 30 is arranged at a position sufficiently spaced from the tip of the pole 2, it is easy to suppress the inclination of the street light 1. - 特許庁

In this embodiment, a set of fixing portions 24 located at both ends L1 and L3 of these three locations L1, L2 and L3 are provided on the same straight line extending in the pole insertion direction E, so that screws Workability of stopping can be improved. In addition, since the point L2 is located between the points L1 and L3, it is easy to adjust the inclination of the street light 1 when attaching the street light 1 to the pole 2 . Furthermore, since the distance between the location L1 and the location L3 is large, the pole fixing screw 30 solves the above-mentioned technical problem that the force (bending moment) that tends to tilt the street light 1 when the wind blows is applied to the fixture. It is possible to reduce the stress that occurs at the contact point.

In this embodiment, the pole receiving portion 4 includes a cylindrical outer shell 20 into which the pole 2 having a diameter D4 at the tip is inserted, and a plurality of rods having a tip smaller than the diameter D4, which are freely attachable to the outer shell 20. and an adapter 22 into which poles 2 having diameters D1, D2, and D3 are inserted and having a plurality of stepped portions 28-1, 28-2, and 28-3 on the inner surface thereof.
In this configuration, since the adapter 22 is not used when the street light 1 is fixed to the pole 2 having the largest diameter D4, the tip of the pole 2 can be inserted to the tip 20A of the outer shell 20 and fixed. As a result, compared with the case where the stepped portions 28-1, 28-2, and 28-3 of the adapter 22 receive the thick pole 2, the insertion dimension of the pole 2 (the amount by which the tip of the pole 2 enters the outer shell 20) is increased. It is possible to stably attach the street light 1 to the pole 2 having a large diameter.

Note that the above-described embodiment is merely an example of one aspect of the present invention, and can be arbitrarily modified and applied without departing from the gist of the present invention.
For example, the present invention can be applied to any lighting equipment other than street lights as long as it is fixed to the tip of the pole 2 .

1 Street lights (lighting equipment)
2 Pole 4 Pole receiving part 4A Pole insertion end 6 Instrument main body 20 Outer shell 20A Tip 22 Adapter 24 Fixing part 28-1, 28-2, 28-3 Step part 28A1, 28A2, 28A3 Tip 30 Pole fixing screw (screw)
32 screw hole 46 through hole C central axis E pole insertion direction K central axis of pole receiving part L height D4 inner diameter (diameter, first diameter)

Claims (3)

In a lighting fixture having a cylindrical pole receiving part into which the tip of the pole is inserted,
The inside of the pole receiving portion is provided with a stepped portion having three or more steps, the diameter of which gradually decreases from the side of the pole insertion end into which the pole is inserted, with which the tip of the pole engages,
The three or more stepped portions form a multi-stage cylindrical shape, and the tip of each stepped portion is an annular flat surface,
The pole receiving part is provided with a plurality of fixing parts for fixing the pole with screws at the position of the stepped part closest to the pole insertion end ,
Of the three or more stepped portions, the stepped portion positioned at the pole insertion end is
The length along the pole insertion direction is greater than the sum of the lengths of all other steps along the pole insertion direction
A lighting fixture characterized by: The pole receiving portion is
It further has an outer shell into which a pole having a diameter larger than the diameter of each of the stepped portions can be inserted, and which accommodates the three or more stepped portions inside.
2. The luminaire according to claim 1, characterized by: The outer shell is
3. The luminaire according to claim 2, wherein the luminaire is attached to the luminaire main body and formed to have a length covering all the stepped portions from the luminaire main body.

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