Outdoor lighting fixtures

Abstract

To provide a technology capable of keeping a projecting amount of a screw within a prescribed range even when an outdoor lighting apparatus to be mounted on a tip of a pole is mounted on a plurality of poles of various diameters while using screws of the same length.SOLUTION: An outdoor lighting apparatus has a lighting portion and a pole receiving portion to which a tip of a pole is inserted. The pole receiving portion has a plurality of step portions formed inside and a plurality of fixing portions for fixing the pole with a plurality of screws. The plurality of fixing portions has a plurality of first fixing portions used in a case where a diameter of the pole is a prescribed diameter or smaller, and a plurality of second fixing portions used in a case where the diameter is larger than the prescribed diameter. The plurality of second fixing portions is disposed in a manner of projecting to an outer peripheral side with respect to the plurality of first fixing portions on the same diameter as that of the plurality of first fixing portions.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to an outdoor lighting fixture for illuminating an outdoor illuminated portion.

Background Art

[0002] Lighting fixtures installed outdoors, such as park lights, may be installed at the tip of a pole standing on the ground in a park or the like. And the diameters of poles in parks and the like are not unified and there are multiple types. Therefore, lighting fixtures installed at the tip of a pole are required to be attached corresponding to poles of multiple types of diameters.

[0003] For example, in Patent Document 1, inside a pole receiving portion into which the tip of a pole is inserted, there are provided a plurality of stepped portions whose diameters gradually decrease in order from the side of the pole insertion end and with which the tip of the pole engages, and in the pole receiving portion, a plurality of fixing portions for fixing the pole with screws are provided at the position of the stepped portion closest to the pole insertion end. A lighting fixture is disclosed.

[0004] Also, in Patent Document 2, a cylindrical attachment member with an open end face has a first attachment portion and a second attachment portion. The first attachment portion houses inside the attachment portion of a first pole having the largest width dimension of the attachment portion and has a first contact surface that contacts the tip of the attachment portion of the first pole. The second attachment portion houses inside the attachment portion of a second pole having the smallest width dimension of the attachment portion and has a second contact surface that contacts the tip of the attachment portion of the second pole. A lighting fixture is disclosed in which the attachment member arranges the first attachment portion close to the end face and arranges the second attachment portion behind the first attachment portion when viewed from the end face.

[0005] Furthermore, Patent Document 3 discloses a lighting fixture having a holder for fixing a socket and globe, and which is formed to be attachable to two types of cylindrical poles of different sizes with different outer diameters at the tip, the holder having a mounting portion for a large pole provided on the lower end surface of the holder for inserting and attaching a large pole, and a mounting portion for a small pole provided with grooves for inserting a small pole by forming a pair of protrusions on the inner extended surface of the mounting portion for the large pole so as to protrude toward the globe side from each other. [Prior art documents] [Patent Documents]

[0006] [Patent Document 1] Japanese Patent Publication No. 2022-31398 [Patent Document 2] Japanese Patent Publication No. 2017-162685 [Patent Document 3] Japanese Patent Application Publication No. 11-288615 [Overview of the project] [Problems that the invention aims to solve]

[0007] When fixing the aforementioned lighting fixtures to a large-diameter pole, using the same screw length in the same screw hole as when fixing to a small-diameter pole will cause the screw to protrude radially from the lighting fixture, resulting in an unsightly appearance. Furthermore, using screws of different lengths depending on the pole diameter is cumbersome.

[0008] The present invention provides a lighting fixture that can keep the amount of screw protrusion below a predetermined range, even when attached to multiple poles of different diameters using screws of the same length. [Means for solving the problem]

[0009] The first outdoor lighting fixture of the present invention is an outdoor lighting fixture that is attached to the tip of a pole, and comprises a lighting section and a pole receiving section into which the tip of the pole is inserted, wherein the pole receiving section comprises a plurality of stepped sections formed on the inside and a plurality of fixing sections that fix the pole with a plurality of screws, wherein the plurality of fixing sections comprises a plurality of first fixing sections used when the diameter of the pole is less than or equal to a predetermined diameter and a plurality of second fixing sections used when the diameter is greater than the predetermined diameter, wherein the plurality of second fixing sections are provided on the same diameter as the plurality of first fixing sections and protrude outward from the plurality of first fixing sections.

[0010] In the second outdoor lighting fixture of the present invention, the plurality of first fixing parts and the plurality of second fixing parts are provided alternately at approximately equal intervals, as in the first invention described above.

[0011] The third outdoor lighting fixture of the present invention, in the first invention described above, has a plurality of stepped portions comprising: a first stepped portion composed of a first inner surface and a first upper surface; a second stepped portion composed of a second inner surface inside the first inner surface and a second upper surface above the first upper surface; a third stepped portion composed of a first outer surface inside the second inner surface and the second upper surface; and a fourth stepped portion composed of a second outer surface inside the first outer surface and the first upper surface.

[0012] In the fourth outdoor lighting fixture of the present invention, the pole is fixed to the first stepped portion, between the second and third stepped portions, or to the fourth stepped portion.

[0013] The fifth outdoor lighting fixture of the present invention is, in the first invention described above, provided that the pole receiving portion has drainage holes formed therein so that water that has entered the lighting portion can be discharged to the outside by flowing along the outside of the pole. [Effects of the Invention]

[0014] In this invention, even when attaching screws of the same length to multiple poles of different diameters, the amount of screw protrusion can be kept below a predetermined range.

Brief Description of the Drawings

[0015] [Figure 1] FIG. 1 is a view showing an outdoor lighting fixture according to the present invention. [Figure 2] FIG. 2(A) is a perspective view of the outdoor lighting fixture according to the present invention as seen from above, and FIG. 2(B) is a perspective view of the outdoor lighting fixture according to the present invention as seen from below. [Figure 3] FIG. 3 is a cross-sectional view of the outdoor lighting fixture according to the present invention. [Figure 4] FIG. 4(A) is a front view of the outdoor lighting fixture according to the present invention in a state of being installed on a pole, and FIG. 4(B) is a perspective view of the outdoor lighting fixture according to the present invention in a state of being installed on a pole as seen from below. [Figure 5] FIGS. 5(A) and 5(B) are longitudinal cross-sectional views showing a case where the outdoor lighting fixture according to the present invention is installed on a pole having a diameter below a predetermined value. [Figure 6] FIG. 6(A) is a cross-sectional view of FIG. 5(A), and FIG. 6(B) is a cross-sectional view of FIG. 5(B). [Figure 7] FIGS. 7(A) and 7(B) are longitudinal cross-sectional views showing a case where the outdoor lighting fixture according to the present invention is installed on a pole having a diameter larger than a predetermined value. [Figure 8] FIG. 8(A) is a cross-sectional view of FIG. 7(A), and FIG. 8(B) is a cross-sectional view of FIG. 7(B). [Figure 9] FIG. 9 is a partially enlarged view of the periphery of the drain hole of the outdoor lighting fixture according to the present invention. [Figure 10] FIG. 10 is a view for explaining the state of discharging water from the drain hole shown in FIG. 9. [Figure 11] FIG. 11 is a partially enlarged view of the periphery of the screwing portion of the outdoor lighting fixture according to the present invention.

Embodiments for Carrying Out the Invention

[0016] One form of the outdoor lighting fixture according to the present invention is an outdoor lighting fixture attached to the tip of a pole, comprising a lighting unit and a pole receiving portion into which the tip of the pole is inserted. The pole receiving portion has a plurality of stepped portions formed inside and a plurality of fixing portions for fixing the pole with a plurality of screws. The plurality of fixing portions include a plurality of first fixing portions used when the diameter of the pole is less than or equal to a predetermined diameter and a plurality of second fixing portions used when the diameter of the pole is greater than the predetermined diameter. The plurality of second fixing portions are provided so as to protrude to the outer peripheral side of the plurality of first fixing portions on the same diameter as the plurality of first fixing portions. Hereinafter, specific embodiments will be described with reference to the drawings.

[0017] The outdoor lighting fixture 1 according to the present invention (hereinafter referred to as the lighting fixture 1) is a lighting fixture 1 attached to the tip of a pole, as shown in FIGS. 1 to 3 and the like, and includes a lighting unit 10 and a holder 12 as a pole receiving portion into which the tip of the pole is inserted.

[0018] The lighting unit 10 includes a globe 14 which is a translucent cover and an upper cover 16 provided on the upper part of the globe 14. The globe 14 is made of, for example, resin and has translucency and light diffusing properties. An opening 14a is formed at the center of the globe 14 to penetrate a part of the holder 12.

[0019] The holder 12 is cylindrical. Protrusions 12a protruding to the outer peripheral side are formed around the holder 12 at substantially equal intervals, for example, at intervals of 120 degrees. Each of the protrusions 12a has an inner surface 18e protruding from the inner surface 18a of the holder 12 to the outer peripheral side. Also, the protrusions 12a are configured such that the thickness of the side surface is thinner below than above on the globe 14 side.

[0020] Further, a holding portion 30 for holding the periphery of the opening 14a of the globe 14 is formed on the upper surface of the protrusion 12a. The globe 14 is screwed to the holding portion 30. That is, the globe 14 is screwed and fixed while being held by the holding portion 30.

[0021] On the inside of the holder 12, above the inner surface 18e, a plurality of stepped sections are formed to support the inserted pole. Specifically, the inside of the holder 12 has an inner surface 18a as a first inner surface, a stepped section 20a as a first stepped section composed of the inner surface 18a and the upper surface 19a as a first upper surface, a stepped section 20b as a second stepped section composed of an inner surface 18b as a second inner surface inside the inner surface 18a and the upper surface 19b as a second upper surface above the upper surface 19a, a stepped section 20c as a third stepped section composed of an outer surface 18c as a first outer surface inside the inner surface 18b and the upper surface 19b, a stepped section 20d as a fourth stepped section composed of an outer surface 18d as a second outer surface inside the outer surface 18c and the upper surface 19a, and an upper surface 19c as a third upper surface that connects the lower ends of the two outer surfaces 18d substantially horizontally.

[0022] Specifically, the inside of the holder 12 has stepped sections 20a, 20b, 20c, and 20d formed in order from the outside. Stepped sections 20a and 20d are of the same height. Also, stepped sections 20b and 20d are of the same height and are positioned above stepped sections 20a and 20d.

[0023] In this way, the stepped sections 20a to 20d are configured as four steps, two on the outside and two on the inside, and the height positions of each are configured as two stages, upper surface 19a and upper surface 19b. This allows the lighting fixture 1 to be fixed to poles 22 of two or more different diameters while reducing the number of height positions for installing the lighting fixture 1 on the pole 22 to three or fewer.

[0024] Furthermore, a power line fixing bracket 24, which is connected to a power supply unit provided inside the pole 22, is fixed to the upper surface 19c at the inner center of the holder 12.

[0025] The holder 12 has a fixing portion 26a on its side, which is a first fixing portion used when the diameter of the pole 22 is less than or equal to a predetermined diameter, and a fixing portion 26b on its side, which is a second fixing portion used when the diameter of the pole 22 is greater than the predetermined diameter. The fixing portion 26a is provided in a location where there is no protrusion 12a, and the fixing portion 26b is provided on the protrusion 12a. That is, the fixing portion 26b is provided in a position that protrudes further outward than the fixing portion 26a. Three fixing portions 26a and three fixing portions 26b are provided, and they are provided alternately and at approximately equal intervals on approximately the same diameter.

[0026] The fixing parts 26a and 26b are configured to fix the pole 22 by inserting screws 28 into the screw holes 27a and 27b, respectively. That is, the distance from the insertion opening of the screw hole 27b of fixing part 26b to contact the pole 22 inserted into the holder 12 is configured to be longer than the distance from the insertion opening of the screw hole 27a of fixing part 26a to contact the pole 22 inserted into the holder 12. For example, a socket head cap screw can be used as the screw 28.

[0027] Furthermore, a stepped mounting portion 32 is formed on the outer surface of the holder 12 above the holding portion 30. A mounting plate 34 is fixed to the mounting portion 32. The mounting plate 34 is, for example, disc-shaped, with a hole formed approximately in the center for a part of the holder 12 to pass through. A power supply board 38 is fixed to the upper surface of the mounting plate 34. The power supply board 38 is equipped with components for converting the AC voltage supplied from the power supply unit via the power line fixing bracket 24 into a DC voltage. In addition, a mounting plate 40 is fixed to the outer circumference of the lower surface of the mounting plate 34. The mounting plate 40 is bent at an acute angle relative to the mounting plate 34 and fixed thereto. An LED board 44, on which multiple light-emitting elements (LEDs 42) are mounted, is screwed and fixed to the lower surface of the mounting plate 40.

[0028] The holder 12 is inserted into the opening 14a of the globe 14, and the globe 14 is screwed to the holding portion 30 of the holder 12. Then, the mounting plate 34, to which the power supply board 38 and LED board 44 are fixed, is screwed to the mounting portion 32 of the holder 12. Finally, the upper cover 16 is attached to the top of the globe 14, and screws are passed through screw holes formed near the center of the upper cover 16 and screwed to the projections 45 of the holder 12. In this way, the power supply board 38 and LED board 44 are housed inside the lighting unit 10.

[0029] Figures 4(A) and 4(B) show the lighting fixture 1 installed on the pole 22. Figures 4(A) and 4(B) show the lighting fixture 1 attached to a pole 22 with a diameter larger than a predetermined size, and show the lighting fixture 1 fixed to the pole 22 by inserting a screw 28 into the screw hole 27b and using the fixing part 26b.

[0030] Next, an example of installing lighting fixtures 1 on multiple poles 22 of different diameters will be explained using Figures 5 to 8.

[0031] As shown in Figures 5(A) and 6(A), when installing the lighting fixture 1 on a pole 22 with a diameter less than or equal to a predetermined diameter, for example, 48.6 mm in diameter, the tip of the pole 22 abuts against the upper surface 19a of the innermost stepped portion 20d. The lighting fixture 1 is then fixed to the pole 22 by three fixing parts 26a. That is, the lighting fixture 1 is fixed by passing screws 28 through three screw holes 27a and bringing the tips of the screws 28 into contact with the outer surface of the pole 22. In other words, the lighting fixture 1 is fixed to the pole 22 by three fixing parts 26a.

[0032] Furthermore, as shown in Figures 5(B) and 6(B), when installing the lighting fixture 1 on a pole 22 with a diameter less than or equal to a predetermined diameter, for example, a pole 22 with a diameter of 60.5 mm, the tip of the pole 22 abuts against the upper surface 19b between the stepped portion 20c and stepped portion 20b on the outside of the stepped portion 20d. The lighting fixture 1 is then fixed to the pole 22 by three fixing parts 26a. That is, the lighting fixture 1 is fixed by passing a screw 28 through each of the three screw holes 27a and bringing the tips of the screws 28 into contact with the outer surface of the pole 22. In other words, the lighting fixture 1 is fixed to the pole 22 by three fixing parts 26a.

[0033] Furthermore, as shown in Figures 7(A) and 8(A), when installing the lighting fixture 1 on a pole 22 with a diameter larger than a predetermined diameter, for example, 76.3 mm in diameter, the tip of the pole 22 abuts against the upper surface 19b between the stepped portion 20c and stepped portion 20b on the outside of the stepped portion 20d. The lighting fixture 1 is then fixed to the pole 22 by three fixing parts 26b. That is, the lighting fixture 1 is fixed by passing a screw 28 through each of the three screw holes 27b and bringing the tips of the screws 28 into contact with the outer surface of the pole 22. In other words, the lighting fixture 1 is fixed to the pole 22 by three fixing parts 26b.

[0034] Furthermore, as shown in Figures 7(B) and 8(B), when installing the lighting fixture 1 on a pole 22 with a diameter larger than a predetermined diameter, for example, 89.1 mm in diameter, the tip of the pole 22 abuts against the upper surface 19a of the stepped portion 20a on the outside of the stepped portion 20b. The lighting fixture 1 is then fixed to the pole 22 by three fixing parts 26b. That is, the lighting fixture 1 is fixed by passing screws 28 through three screw holes 27b and bringing the tips of the screws 28 into contact with the outer surface of the pole 22. In other words, the lighting fixture 1 is fixed to the pole 22 by three fixing parts 26b.

[0035] In other words, when installing the lighting fixture 1 on a pole 22 with a diameter larger than a predetermined diameter, it is fixed to the holder 12 using the fixing part 26b provided on the protruding part 12a. In this way, when attaching to a pole 22 with a diameter of a predetermined diameter or less, the fixing part 26a is used, and when attaching to a pole 22 with a diameter larger than a predetermined diameter, the fixing part 26b, which protrudes further outward than the fixing part 26a, is used to fix it to the pole 22. In other words, when installing the lighting fixture 1 on a pole 22 with a diameter larger than a predetermined diameter, the fixing part 26b, which has a longer distance from the insertion opening of the screw hole to contact the pole 22, is used. This makes it possible to reduce the amount the screw 28 protrudes when installing the lighting fixture 1 on a pole 22 with a diameter larger than a predetermined diameter compared to when the fixing part 26a is used. In other words, even when using a screw 28 of the same length, the amount protruding from the holder 12 can be kept below a predetermined range, allowing the lighting fixture 1 to be installed on poles 22 of multiple diameters.

[0036] Figure 9 is a magnified view of the area around the drain hole 46 of the lighting fixture 1, with the lighting fixture 1 attached to the pole 22. Figure 10 is an overall view of the lighting fixture 1 attached to the pole 22, showing how water is being drained from the drain hole 46.

[0037] As shown in Figures 9 and 10, the globe 14 is fixed to the holding portion 30 of the holder 12 by screws. A drain hole 46 is formed on the inner surface 18a of the holder 12, above the holding portion 30, so as to penetrate through the inside of the globe 14 and the inside of the holder 12. The drain hole 46 is configured to discharge water that has entered and accumulated inside the globe 14 to the outside of the globe 14 and to the inside of the holder 12, and then to the outside of the pole 22 by flowing along the outer surface of the pole 22.

[0038] This makes it less susceptible to problems such as moisture from the ground seeping into the lighting fixture 1 and degrading its components, compared to draining water into the inside of the pole 22. Also, since the water is drained to the outside via the outer surface of the pole 22, it can accommodate multiple poles 22 of different diameters. Furthermore, since the drainage hole 46 is formed on the inner surface 18a of the holder 12, it is difficult for water to be blown into the drainage hole 46, and it is also difficult for insects to enter.

[0039] Figure 11 is a magnified view of the area around the projection 45 that secures the upper cover 16 to the holder 12.

[0040] Multiple surfaces 16b are formed in the center of the upper surface of the upper cover 16, protruding upward from the surrounding surface 16a. The surfaces 16b are formed to protrude diagonally and continuously upward from the surrounding surface 16a. Screw holes 16c are formed in the surfaces 16b. A protective member 61 with screw holes is provided on the upper surface of the surfaces 16b. A screw fastening portion 60 is formed when a screw is inserted into the screw holes 16c via the protective member 61. In other words, the upper cover 16 is fixed by screw fastening the screw fastening portion 60 to the projection 45 that protrudes upward from the holder 12. This configuration makes it difficult for water to flow into the lighting unit 10 from the screw holes 16c formed in the upper cover 16.

[0041] In other words, compared to the case where the screw hole 16c is at the same height as the surrounding surface of the upper cover 16, it is less susceptible to problems such as water flowing into the lighting unit 10 and causing deterioration of the components.

[0042] In the above embodiment, the example described was the case in which the lighting fixture 1 is fixed to the pole 22 using three fixing parts 26a and three fixing parts 26b. However, the present invention is not limited to this and can be applied when using three or more fixing parts.

[0043] The present invention is not limited to the embodiments described above, and encompasses a range of technical modifications that can be made within the scope of the technical concept of the present invention. [Explanation of symbols]

[0044] 1 Lighting fixtures 10 Lighting Section 12. Holder (pole receiving part) 12a Protrusion 14. Gloves (light-transmitting cover) 16 Top cover 20a, 20b, 20c, 20d Stepped section 22 Pole 24 Power cord fixing bracket 26a, 26b Fixed part 27a, 27b threaded holes 28 screws 30 Holding part 32 Mounting part 34, 40 Mounting plate 38 Power supply board 42 LED 44 LED boards 60 Screw fastening part

Claims

1. An outdoor lighting fixture that is attached to the top of a pole, Lighting section, It has a pole receiving portion into which the tip of the pole is inserted, The pole receiving portion has a plurality of stepped portions formed on the inside and a plurality of fixing portions that secure the pole with a plurality of screws, The plurality of fixing parts include a plurality of first fixing parts used when the diameter of the pole is less than or equal to a predetermined diameter, and a plurality of second fixing parts used when the diameter is greater than the predetermined diameter. The plurality of second fixing portions are provided on the same diameter as the plurality of first fixing portions, and protrude outward from the plurality of first fixing portions. Outdoor lighting fixtures.

2. The outdoor lighting fixture according to claim 1, wherein the plurality of first fixing parts and the plurality of second fixing parts are each provided alternately at approximately equal intervals.

3. The aforementioned multiple stepped portions are, A first stepped portion consisting of a first inner surface and a first upper surface, A second stepped portion is formed from a second inner surface on the inside of the first inner surface and a second upper surface above the first upper surface, A third stepped portion formed from the first outer surface and the second upper surface on the inner side of the second inner surface, A fourth stepped portion formed from the second outer surface on the inner side of the first outer surface and the first upper surface, An outdoor lighting fixture according to claim 1, having the following:

4. The outdoor lighting fixture according to claim 3, wherein the pole is fixed to the first step, between the second step and the third step, or to the fourth step.

5. The outdoor lighting fixture according to claim 1, wherein the pole support portion is provided with drainage holes to allow water that has entered the lighting unit to be discharged to the outside by flowing along the outside of the pole.

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