Lighting fixture

Abstract

To easily fix struts different in outside diameter, without using a strut support.SOLUTION: A lighting fixture comprises a fixture body and a mounting part 11 for mounting the fixture body on a strut. The mounting part 11 has a cylindrical part 21 for internally housing the strut 2. The cylindrical part 21 includes one half part 22 and the other half part 23 in a cross-sectional view. The one half part 22 and the other half part 23 are different in the length of the major axis CL. First and second ribs 25 and 27 are formed in at least two locations of an inner surface of the other half part 23 larger in the length of the major axis CL2. Bolts 41 and 42 are inserted from the side of the one half part 22 smaller in the length of the major axis CL1. The strut 2 is fixed by the bolts 41 and 42 and the first and second ribs 25 and 27 in the at least two locations.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to a lighting fixture. [Background technology]

[0002] Patent Document 1 discloses a technology that includes an apparatus body and an attachment section for attaching the apparatus body to a support, the attachment section having a first support section and a second support section that is arranged to cover the first support section, the first support section having a plurality of support sections arranged in a row that selectively support a plurality of different types of support sections, and the second support section sandwiches the support section between the first support section and the second support section while the support section is supported by one of the plurality of support sections, thereby making it possible to fix support sections with different outer diameters. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2017-73234 Summary of the Invention [Problem to be solved by the invention]

[0004] However, in Patent Document 1, a first support column support and a second support column support are required to fix the support columns with different outer diameters. The present invention has been made in view of the above circumstances, and provides a lighting fixture that can easily fix poles with different outer diameters without using a pole support. [Means for solving the problem]

[0005] One aspect of the present invention is a lighting fixture comprising a fixture body and an attachment part for attaching the fixture body to a support pole, the attachment part comprising a tubular part for accommodating the support pole inside, the external shape of the tubular part being approximately elliptical in cross section and including one half and another half, the one half and the other half having different major axis lengths, ribs formed in at least two places on the inner surface of the other half having the longer major axis length, a bolt inserted from the side of the one half having the shorter major axis length, and the support pole being fixed by the bolt and the at least two ribs. [Effects of the Invention]

[0006] According to the present invention, posts with different outer diameters can be easily fixed to the mounting portion that mounts the instrument body to the post without using a post support. [Brief explanation of the drawings]

[0007] [Figure 1] 1 is a perspective view of a lighting fixture in an installed state according to an embodiment of the present invention; [Figure 2] FIG. 2 is an exploded perspective view of the lighting fixture with the light source portion facing upward. [Figure 3] 10 is a view of the cylindrical portion viewed from the open end side with the light source portion facing upward. FIG. [Figure 4] 1A is a perspective view of the cylindrical part seen from one half side with the light source part facing upward, and FIG. 1B is a plan view of the same. [Figure 5] FIG. 10 is a cross-sectional view showing a state in which a large-diameter support is attached to a cylindrical portion with the light source portion facing upward. [Figure 6] FIG. 10 is a cross-sectional view showing a state in which a medium-diameter support is attached to a cylindrical portion with the light source portion facing upward. [Figure 7] 10 is a cross-sectional view showing a state in which a small-diameter support is attached to a cylindrical portion with the light source portion facing upward. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0008] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view of a lighting fixture 1 according to an embodiment of the present invention in an installed state, and FIG. 2 is an exploded perspective view of the lighting fixture 1 in a state where the light source unit is facing upward. The lighting fixture 1 is used as a road lighting fixture and is also called an LED road light. The lighting fixture 1 may be used for purposes other than road lighting, such as parking lot lighting, park lighting, street lighting, and landscape lighting.

[0009] As shown in Fig. 1, the lighting fixture 1 includes a fixture body 10 and a mounting part 11 for mounting the fixture body 10 to a support pole 2. A cover 12 is attached to the fixture body 10. When the cover 12 is opened, a terminal block 112 is located inside the fixture body 10. Reference numeral 113 denotes a control device.

[0010] 2, the fixture body 10 includes a housing 13 that is open at the top when the light source unit is facing up, plates 14 that are supported in parallel in the opening of the housing 13, and a substrate 15 on which light emitting elements 15a are mounted. The housing 13 may be a casting made of aluminum or an aluminum alloy, or may be made of a material other than metal, such as reinforced plastic with improved corrosion resistance and strength.

[0011] The substrate 15 is provided with a lens 16 that controls the light distribution of each of the light-emitting elements 15a mounted on the substrate 15, thereby forming a light source unit. The light-emitting elements 15a are each configured with, for example, an LED. Solid-state light-emitting elements such as organic EL elements can also be used as the light-emitting elements 15a. An annular packing 17 is arranged around the periphery of the opening of the housing 13, and a light-transmitting cover 18 is arranged in contact with the packing 17.

[0012] A fixing member 19 is disposed on the periphery of the cover 18, and this fixing member 19 is fixed to the periphery of the opening of the housing 13 with a plurality of screws 20, sandwiching the cover 18. The cover 18 is made of a corrosion-resistant and strong material such as glass or acrylic resin, and is optically transparent.

[0013] The mounting portion 11 includes a cylindrical portion 21. The support post 2 is inserted into the cylindrical portion 21 from an open end 21A. The mounting portion 11 houses the support post 2 inside.

[0014] FIG. 3 is a view of the cylindrical portion 21 viewed from the open end side with the light source portion facing upward. In a cross-sectional view of a ring-shaped section, the cylindrical portion 21 includes a first half 22 and an second half 23. The first half 22 has a semicircular outer shape, a substantially uniform thickness in the circumferential direction, and a semicircular inner surface. A bolt insertion portion 24 is formed in the first half 22.

[0015] FIG. 4(A) is a perspective view of the cylindrical portion 21 seen from the side of the one half portion 22 with the light source portion facing upward, and FIG. 4(B) is a plan view of the same.

[0016] The bolt insertion portion 24 includes two protrusions 51, 52 and a continuous portion 53 connecting them. The bolt insertion portion 24 is formed to extend long in the axial direction of the cylindrical portion 21. The protrusions 51, 52 protrude outward from the outer periphery of the one half portion 22. The protrusions 51, 52 each have a substantially elliptical truncated cone shape. The major axes of the protrusions 51, 52 extend in the axial direction of the cylindrical portion 21, and the minor axes extend perpendicular to the major axes. The protrusions 51, 52 each have a female threaded hole 124. The bolts 41, 42 (see FIG. 1) are threaded into the female threaded hole 124. Because the two protrusions 51, 52 each have a substantially elliptical truncated cone shape, their strength is improved compared to when the protrusions 51, 52 are circular truncated cones.

[0017] As shown in FIG. 3, the cylindrical portion 21 is formed such that the thickness T of the open end 21A into which the support 2 is inserted is greater than the thickness T1 of the protrusions 51, 52. As a result, in the lighting fixture 1, even if an impact is applied to the support 2 and the fixture body vibrates, the opening of the open end 21A is suppressed.

[0018] As shown in FIG. 3, the other half 23 of the cylindrical portion 21 has an elliptical outer shape.

[0019] The overall outer shape of the cylindrical portion 21 is a substantially elliptical shape when the outer shapes of the one half portion 22 and the other half portion 23 are combined. In Fig. 3, the major axis CL and the minor axis TL of the substantially elliptical cylindrical portion 21 are indicated by imaginary lines. The length of the long axis CL1 of the one half portion 22 and the length of the long axis CL2 of the other half portion 23 are different, and the length of the long axis CL2 of the other half portion 23 is longer than the long axis CL1 of the one half portion 22.

[0020] A pair of ribs (hereinafter referred to as first ribs) 25 are formed on the inner surface of the other half 23, which has the long axis CL2. The first ribs 25 are formed in a pair symmetrically on either side of the long axis CL2. The pair of first ribs 25 are formed to extend linearly in the axial direction of the tubular portion 21 (see FIG. 4A). The pair of first ribs 25 is not limited to being formed to extend linearly, and may be provided partially and discontinuously in the axial direction of the tubular portion 21. Further, a pair of ribs (hereinafter referred to as second ribs) 27 are formed in a region below the pair of first ribs 25. The second ribs 27 are formed in a pair symmetrically on either side of the long axis CL2. The pair of second ribs 27 are formed to extend linearly in the axial direction of the tubular portion 21 (see FIG. 4A). The pair of second ribs 27 are not limited to being formed to extend linearly, and may be provided partially and discontinuously in the axial direction of the tubular portion 21.

[0021] A recess 28 recessed downward is formed between the two second ribs 27. The thickness of the other half 23 is formed so that the thickness of the upper part of the other half 23 and the thickness of the recess 28 are approximately equal. Since the thicknesses of the respective parts are formed approximately equal, the outer shape of the other half 23 is a substantially elliptical shape with a long major axis CL2. As a result, the support 2 is fixed by the ribs 25 and 27, which are formed to be thicker than other parts, and the outer shape of the tubular portion 21 is neatly organized, improving the appearance and making the tubular portion 21 smaller and lighter.

[0022] The arrangement of the first ribs 25 and the second ribs 27 will be described with reference to FIGS. 5 shows the large-diameter support 2A attached to the cylindrical portion 21 with the light source facing up. The outer diameter of the large-diameter support 2A is 60.5 mm. When the support 2A is inserted into the cylindrical portion 21 and the bolts 41 and 42 are tightened, the outer surface of the support 2A comes into contact with a pair of first ribs 25, as described below.

[0023] Bolts 41, 42 are screwed into the protrusions 51, 52 of the one half 22, respectively. The protrusions 51, 52 are each formed on the long axis CL1 of the one half 22. When one bolt 41 is screwed into one of the protrusions 51, the bolt 41 moves toward the center O of the large-diameter support 2A and presses against the outer surface of the support 2A. As a result, the support 2A is fixed at three points: the pair of first ribs 25 and the bolt 41. When the other bolt 42 is tightened, the support pillar 2 is fixed at three points: the pair of first ribs 25 and the other bolt 42. The support pillar 2 is fixed at a total of six points, including the number of bolts 41 and 42 and the three fixing points.

[0024] In this embodiment, the angle θ between the line connecting the center O of the support pillar 2A and the contact point SO of the first rib 25 and the support pillar 2A is 86°.

[0025] 6 shows the state in which a medium-diameter support 2B is attached to the cylindrical portion 21 with the light source facing up. The outer diameter of the medium-diameter support 2B is 48.6 mm. When the support 2B is inserted into the cylindrical portion 21 and the bolts 41 and 42 are tightened, the outer surface of the support 2B comes into contact with the pair of first ribs 25, just as in the case of a large-diameter support.

[0026] Bolts 41, 42 are screwed into the protrusions 51, 52 of the one half 22, respectively. When one bolt 41 is screwed in, the bolt 41 moves toward the center O of the medium-diameter support 2B and presses against the outer surface of the support 2B. As a result, the support 2B is fixed at three points: the pair of first ribs 25 and the bolt 41. When the other bolt 42 is tightened, the support pillar 2B is fixed at three points: the pair of first ribs 25 and the other bolt 42. The support pillar 2 is fixed at a total of six points, including the number of bolts 41 and 42 and the three fixing points.

[0027] In this embodiment, the angle θ between the line connecting the center O of the support pillar 2B and the contact point SO of the first rib 25 and the support pillar 2B is 112°.

[0028] 7 shows a state in which a small diameter support column 2C is attached to the cylindrical section 21 with the light source section facing upward. The outer diameter of the small diameter support column 2C is 34 mm. When the support column 2C is inserted into the cylindrical portion 21 and the bolts 41 and 42 are tightened, the outer surface of the support column 2C comes into contact with the pair of second ribs 27. The support pillar 2 extends into the recess 28 .

[0029] Bolts 41, 42 are screwed into the protrusions 51, 52 of the one half 22, respectively. When one bolt 41 is screwed in, the bolt 41 moves toward the center O of the small-diameter support 2C and presses the support 2C. As a result, the support 2C is fixed at three points: the pair of second ribs 27 and the bolt 41. When the other bolt 42 is tightened, the support pillar 2C is fixed at three points: the pair of second ribs 27 and the other bolt 42. The support pillar 2C is fixed at a total of six points, including the number of bolts 41 and 42 and the three fixing points.

[0030] In this embodiment, the angle θ between the line connecting the center O of the support pillar 2C and the contact point SO of the second rib 27 and the support pillar 2C is 90°.

[0031] Here, θ is the angle between the line connecting the center O of the support pillar 2 and the contact point SO between the first rib 25, the second rib 27 and the support pillar 2. When support pillars 2 with different diameters are inserted into the cylindrical portion 21, the angle θ is 80° or greater. If the angle θ is less than 80°, the angle becomes too narrow and there is a risk of a decrease in the force holding the support 2. Preferably, the angle θ is 80° to 140°. More preferably, the angle θ is 80° to 120°.

[0032] In this embodiment, as described above, any of the support posts 2 having different outer diameters can be easily attached to the cylindrical portion 21.

[0033] When the lighting fixture 1 is installed, one half 22 is positioned below and the other half is positioned above, as shown in Fig. 1. As a result, when the support 2 is inserted into the cylindrical portion 21, the fixture body 10 moves downward due to its own weight, and the outer surface of the support 2 comes into contact with the first rib 25 and the second rib 27, facilitating the work of fixing the fixture with the bolts 41 and 42. The positions of the one half 22 and the other half 23 are not limited to this. For example, the one half 22 may be located diagonally below and the other half may be located diagonally above, or the one half 22 may be upside down and the other half may be down.

[0034] In this embodiment, two types of pillars 2, large and medium diameter, can be fixed using the bolts 41, 42 and the first rib 25, and a pillar 2 with a small diameter can be fixed using the bolts 41, 42 and the second rib 27. This makes it possible to selectively and easily fix any one of the three types of pillars 2 to the cylindrical portion 21. However, the second rib 27 can be omitted. In this case, the bolts 41, 42 and the first rib 25 can be used to fix the large or medium diameter support column 2.

[0035] In this embodiment, the outer shape of the tubular portion 21 is approximately elliptical in cross section, and includes one half 22 and the other half 23, the one half 22 and the other half 23 having different lengths of the long axis CL, and a first rib 25 and a second rib 27 are formed at at least two locations on the inner surface of the other half 23, which has the longer length of the long axis CL2, and two bolts 41, 42 are inserted from the side of the one half 22, which has the shorter length of the long axis CL1, so that the support 2 is fixed at a total of six locations: three locations between one bolt 41 and any of the first ribs 25 and second ribs 27, and three locations between the other bolt 42 and any of the first ribs 25 and second ribs 27.

[0036] Therefore, a support pole 2 with a different outer diameter can be easily fixed to the mounting portion 11 that attaches the instrument body 10 to the support pole 2, without using a support pole support. Also, by lengthening the long axis CL2 of the other half portion 23 and providing the first rib 25 and the second rib 27 on the inner surface of the other half portion 23, the thickness of the other half portion 23 can be maintained large, and the overall strength of the tubular portion 21 is improved.

[0037] In the above embodiment, the support pillar 2 is fixed at a total of six locations, namely, the bolts 41, 42 and the first ribs 25 and the second ribs 27 at two locations, but the present invention is not limited to this. For example, the first rib 25 and the second rib 27 do not have to be provided in two locations, but may be provided in three or more locations spaced apart in the circumferential direction on the inner surface of the other half 23. The bolts 41, 42 arranged in the axial direction may be provided in two or more locations spaced apart in the circumferential direction of the other half 23.

[0038] In this embodiment, the outer shape of the half portion 22 having the shorter length of the major axis CL1 is semicircular. This allows for a reduction in the size and weight of the cylindrical portion 21. The outer shape of the one half portion 22 is not limited to a semicircular shape, and may be, for example, a rectangular shape or a trapezoidal shape. If the outer shape of the one half portion 22 is semicircular, the thickness of the one half portion 22 can be made thin to fit the outer shape of the large-diameter support 2, thereby allowing for a reduction in the size and weight of the cylindrical portion 21 to the maximum extent possible.

[0039] In this embodiment, the first ribs 25 and the second ribs 27 are provided in at least four locations. This makes it possible to attach posts of different diameters to the mounting part 11. A pair of first ribs 25 out of the four locations can be used to fasten two types of posts 2, large and medium diameter, and a pair of second ribs 27 can fasten a small diameter post 2, so that the four ribs can fasten three types of posts 2 with different outer diameters, improving the flexibility of the mounting part 11.

[0040] In this embodiment, the angle θ between the line connecting the center O of the support 2 and the contact point SO of each of the first rib 25 and the second rib 27 with the support 2 is 80° or greater, regardless of the diameter dimension of the support 2. This improves the supporting force of the support column 2. This in turn improves the rigidity against impact forces acting laterally on the cylindrical portion 21. Preferably, the angle θ is 80° to 140°, and more preferably, 80° to 120°.

[0041] In this embodiment, the one half 22 has protrusions 51 and 52 into which the bolts 41 and 42 are inserted, and the protrusions 51 and 52 are substantially shaped like elliptical truncated cones. By increasing the thickness of the protrusions 51, 52 without increasing the overall thickness of the one half 22 too much, the length of the female threaded holes 124 into which the bolts 41, 42 are threaded can be increased. This improves the holding force of the bolts 41, 42. This in turn improves the rigidity of the bolts 41, 42 against impact forces acting on them from the lateral direction. Furthermore, since the protrusions 51 and 52 are substantially elliptical truncated cone shaped, the strength is improved compared to the protrusions 51 and 52 that are truncated cones.

[0042] In this embodiment, the cylindrical portion 21 is formed so that the thickness of the open end 21A, into which the support 2 is inserted, is thicker than the thickness of the protrusions 51, 52 of the bolt insertion portion 24. As a result, in lighting fixture 1, even if, for example, an impact is applied to support pole 2 and the fixture body vibrates, the opening of open end 21A is prevented from opening.

[0043] The above-described embodiment merely shows one aspect of the present invention, and any modifications and applications are possible without departing from the spirit of the present invention. [Explanation of symbols]

[0044] 1. Lighting equipment 2 pillars 10. Instrument body 11 Mounting part 15 PCB 15a Light-emitting element 16 Lenses 17 Gasket 18 Cover 21 Cylindrical part 22 One half 23 Other half 24 Bolt Insert 25 First Rib (Rib) 27 Second Rib (Rib) 28 Relief 41, 42 volts 51, 52 Convex parts CL, CL1, CL2 long axis O Center of support SO Contact points of ribs and struts

Claims

1. The instrument includes an instrument body and an attachment portion for attaching the instrument body to a support pole, the mounting portion includes a cylindrical portion that houses the support rod therein; The cylindrical portion has an outer shape that is substantially elliptical in cross section and includes one half and another half, the one half and the other half having different major axis lengths, ribs formed at at least two locations on the inner surface of the other half having the longer major axis length, a bolt inserted from the side of the one half having the shorter major axis length, and the support column fixed by the bolt and the at least two ribs. Lighting fixtures.

2. The outer shape of the half portion having the shorter major axis is semicircular.

10. The lighting fixture of claim 1.

3. The ribs are provided at at least four locations, and the mounting portion is capable of selectively mounting a plurality of the support posts having different diameters.

10. The lighting fixture of claim 1.

4. The centers of the pillars having different diameters; a contact point between each of the two ribs and the support post; The angles between the lines connecting the above are all 80° or more.

4. A lighting fixture according to claim 3.

5. the one half includes a bolt insert; the bolt insertion portion has a protrusion extending outward from the outer surface of the one half portion, The convex portion has a substantially elliptical truncated cone shape.

5. A lighting fixture according to claim 1.

6. the one half includes a bolt insert; The cylindrical portion has an open end into which the support rod is inserted that has a thickness greater than that of the bolt insertion portion.

5. A lighting fixture according to claim 1.

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