Light protection tool

Abstract

To provide a light protection tool that can inhibit a lighting fixture from being touched by a person intentionally or carelessly after the installation of the lighting fixture or inhibit light emitted from the lighting fixture from being blocked by sediment or fallen leaves.SOLUTION: A light protection tool 1 for protecting a lighting fixture 101 installed near to a ground surface includes: a cover 3 including a truncated cylinder part 9 for accommodating the lighting fixture 101. A translucent part 15 that transmits light emitted upward or obliquely upward from the lighting fixture 101 therethrough is installed in an inclined surface 13 of the truncated cylinder part 9.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a lighting protection device that protects a lighting device that is installed close to the ground. [Background technology]

[0002] 2. Description of the Related Art As disclosed in Patent Document 1, a lighting fixture is known that is installed close to the ground and irradiates light upward or obliquely upward toward a wall surface of a building, a signboard, or the like. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2015-125917 A Summary of the Invention [Problem to be solved by the invention]

[0004] After a lighting fixture is installed, there is a risk that a person may intentionally or inadvertently touch the lighting fixture, or that the light emitted from the lighting fixture may be blocked by dirt, sand, fallen leaves, etc. that have accumulated on the lighting fixture.

[0005] To provide a lighting protection device capable of preventing a person from intentionally or carelessly touching a lighting device after the lighting device is installed and preventing light emitted from the lighting device from being blocked by soil, fallen leaves, etc. [Means for solving the problem]

[0006] The lighting protection device of the present invention protects a lighting device. The lighting device is installed near the ground and irradiates light upward or diagonally upward. The location where the lighting protection device is installed may be, for example, the upper surface of a concrete foundation installed on the ground, or the upper surface of a lighting installation device at least partially buried in the ground. The lighting installation device is, for example, a steel box.

[0007] The lighting protection device includes a cover. The cover includes a truncated tubular portion. The truncated tubular portion houses the lighting device. The truncated tubular portion is formed in a substantially truncated tubular shape. A truncated tubular shape is a shape in which one axial end of a cylinder or a rectangular tube is cut obliquely relative to the axial direction. The cover is usually installed so that the axial direction of the truncated tubular portion is substantially parallel to the vertical direction.

[0008] A light-transmitting portion is provided on the inclined surface of the truncated tube portion. As described above, the inclined surface of the truncated tube portion corresponds to the cut edge when the truncated tube shape is considered to be a shape obtained by cutting one axial end of a cylinder or a square tube obliquely with respect to the axial direction. The light-transmitting portion transmits light irradiated upward or obliquely upward from the lighting fixture housed in the truncated tube portion. The light-transmitting portion may be transparent or translucent.

[0009] The angle of the inclined surface with respect to a plane perpendicular to the axial direction of the truncated tube portion is called the inclination angle of the inclined surface. When the cover is installed so that the axial direction of the truncated tube portion is approximately parallel to the vertical direction, the inclination angle of the inclined surface is approximately equal to the angle with respect to the horizontal plane. The inclination angle of the inclined surface is not particularly limited, but is, for example, 15 degrees or more and 45 degrees or less.

[0010] The truncated tube portion may be configured to have a vent hole. The location where the vent hole is provided in the truncated tube portion is not particularly limited, and may be, for example, an inclined surface or a side surface. The vent hole may be configured to have a filter portion. Any type of filter portion may be used as long as it has a filter function, that is, a filter portion that suppresses the intrusion of foreign matter such as water and dust and has breathability.

[0011] The lighting protection device may be configured to include a base. The base includes a mounting portion on which the lighting device is mounted. If the lighting protection device does not include a base, the lighting device is directly installed at an installation location where the lighting protection device is to be installed.

[0012] When the lighting protection device is configured to include a base, the cover may be configured to be fixed to the base, or may be configured to be simply placed on the base. When the cover is fixed to the base, for example, it may be fixed using a male screw member or may be fixed using an adhesive.

[0013] The base may include a base flange portion, and the cover may include a cover flange portion facing the base flange portion. The base flange portion is provided in a flange shape around the mounting portion, and the cover flange portion is provided in a flange shape around the truncated tubular portion.

[0014] The base flange portion is provided with a base mounting hole through which the mounting screw is inserted. The number of base mounting holes is not particularly limited and may be one or more than one. The cover flange portion is provided with a cover mounting hole through which the mounting screw is inserted. The number of cover mounting holes is not particularly limited and may be one or more than one. The mounting screw is a male threaded member that fixes the base and cover to the installation location of the lighting protection device. For example, a bolt or a machine screw can be used as the mounting screw.

[0015] The base mounting hole may be an elongated hole that is long in the circumferential direction of the base flange portion, and the cover mounting hole may be an elongated hole that is long in the circumferential direction of the cover flange portion.

[0016] In a configuration in which the base includes a base flange portion and the cover includes a cover flange portion, the lighting protection device may include a seal member. The seal member is provided between the base flange portion and the cover flange portion. The seal member may be attached to the base flange portion by adhesion or the like, may be attached to the cover flange portion, or may be provided between the base flange portion and the cover flange portion during construction. The seal member is made of a material that is highly flexible and exhibits water-stopping properties by being crushed between the base flange portion and the cover flange portion.

[0017] The base may include an inner tube portion. The inner tube portion protrudes from an outer edge of the mounting portion and is located inside the truncated tube portion. The inner tube portion may be cylindrical or rectangular. The lighting device is accommodated inside the inner tube portion.

[0018] The inner tube portion may be provided with an inner tube side connecting hole through which the connecting screw is inserted, and the truncated tube portion may be provided with an outer tube side connecting hole through which the connecting screw is inserted. The connecting screw connects the inner tube portion and the truncated tube portion. The connecting screw may be, for example, a bolt or a machine screw.

[0019] Unless otherwise specified, the material of each part of the lighting protection device is not limited to a specific material, and may be, for example, metal, resin, or wood. [Brief description of the drawings]

[0020] [Figure 1] FIG. 4 is a right side view of the lighting protection device in a state in which the lighting device is protected. [Diagram 2] FIG. 2 is a front view of the lighting protection device in a state in which the lighting device is protected. [Diagram 3] FIG. [Figure 4] 1 is a process diagram showing a construction procedure for protecting a lighting fixture using a lighting protection fixture. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0021] Hereinafter, a lighting protection device 1 as one embodiment of the lighting protection device will be described with reference to the accompanying drawings.

[0022] The lighting protection device 1 will be described with reference to Figures 1 to 3. The lighting protection device 1 protects a lighting device 101. The lighting device 101 is installed near the ground and emits light upward or obliquely upward.

[0023] The lighting device 101 includes an LED substrate 103, an upper support plate 105, and a lower support plate 107. The LED substrate 103 is formed in a substantially rectangular plate shape. A plurality of LED lamps 109 are arranged vertically and horizontally on the surface of the LED substrate 103. The LED substrate 103 is fixed to the upper surface of the upper support plate 105.

[0024] The upper support plate 105 and the lower support plate 107 are each formed into a plate shape bent into a substantially U-shape. The upper support plate 105 is fixed to the lower support plate 107 by plate fixing screws 111 provided at both the left and right ends, two above and two below. When the plate fixing screws 111 are loosened, the upper support plate 105 can rotate around the upper plate fixing screw 111 relative to the lower support plate 107. By adjusting the rotation angle of the upper support plate 105 relative to the lower support plate 107, the irradiation angle of the lighting device 101 can be adjusted within a range of 60 degrees to 90 degrees. The irradiation angle means the irradiation angle of the lighting device 101 relative to a horizontal plane.

[0025] The lighting protection device 1 includes a cover 3, a base 5, and a sealing member 7.

[0026] The cover 3 includes a truncated cylinder portion 9 and a cover side flange portion 11. The cover 3 is usually fixed onto the base 5 with the axial direction of the truncated cylinder portion 9 approximately parallel to the vertical direction. The cover 3 is made of a stainless steel plate, except for a light-transmitting plate 19 described later.

[0027] The truncated tube portion 9 houses the lighting device 101. The truncated tube portion 9 is formed in a substantially truncated cylindrical shape. The inclined surface 13 of the truncated tube portion 9 is formed in a substantially elliptical shape. The inclination angle of the inclined surface 13 with respect to a plane perpendicular to the axial direction of the truncated tube portion 9 is approximately 30 degrees. As described above, when the cover 3 is fixed onto the base 5 such that the axial direction of the truncated tube portion 9 is approximately parallel to the vertical direction, the inclination angle of the inclined surface 13 with respect to the horizontal plane is approximately 30 degrees.

[0028] The inclined surface 13 is provided with a light-transmitting portion 15. The light-transmitting portion 15 includes a circular light-transmitting opening 17 provided in the inclined surface 13 and a light-transmitting plate 19 that closes the light-transmitting opening 17. The light-transmitting plate 19 is formed in a plate shape made of polycarbonate and has light-transmitting properties. The light-transmitting portion 15 transmits light irradiated upward or obliquely upward from the lighting device 101 housed in the truncated tube portion 9. That is, the lighting device 101 housed in the truncated tube portion 9 irradiates light to an irradiation object via the light-transmitting portion 15.

[0029] The truncated tube portion 9 is provided with a vent hole 21. The vent hole 21 is provided on the outer edge of the light-transmitting opening 17. The vent hole 21 is provided with a filter portion 23. The filter portion 23 includes a membrane filter and can be attached to the vent hole 21 by a screw type. By providing the truncated tube portion 9 with the vent hole 21 and the filter portion 23, it is possible to ensure ventilation between the inside and outside of the truncated tube portion 9 while suppressing the intrusion of foreign matter into the truncated tube portion 9 through the vent hole 21, and therefore it is possible to suppress the occurrence of condensation inside the truncated tube portion 9.

[0030] An outer tube side connecting hole 25 (see FIG. 2) is provided at the lower end of the side surface of the truncated tube portion 9. The outer tube side connecting hole 25 is formed as a long hole that is long vertically. A connecting screw 27 is inserted into the outer tube side connecting hole 25.

[0031] The cover side flange portion 11 is provided around the truncated tube portion 9. That is, the cover side flange portion 11 protrudes radially outward in a flange shape from the lower end portion of the truncated tube portion 9. The cover side flange portion 11 is provided with four cover side installation holes 29.

[0032] The four cover-side mounting holes 29 are provided at approximately equal intervals in the circumferential direction of the cover-side flange portion 11. As described below, each cover-side mounting hole 29 is formed as an oblong hole that is long in the circumferential direction of the cover-side flange portion 11 in order to adjust the irradiation direction of the lighting device 101. That is, each cover-side mounting hole 29 is formed in an arc shape with a central angle of approximately 30 degrees. The irradiation direction means the irradiation direction of the lighting device 101 around a rotation axis parallel to the vertical direction.

[0033] An installation screw (not shown) is inserted into each cover-side installation hole 29. The installation screw fixes the base 5 and the cover 3 to a concrete foundation (not shown), which is the installation location of the lighting protection device 1. An anchor bolt is used as the installation screw.

[0034] The base 5 is fixed to the upper surface of the concrete foundation. The base 5 is made of a stainless steel plate. The base 5 includes a disk portion 31 and an inner tube portion 33. The disk portion 31 is formed in a disk shape with approximately the same diameter as the cover side flange portion 11. The inner tube portion 33 protrudes from the upper surface of the disk portion 31 in a cylindrical shape concentric with the disk portion 31. Of the disk portion 31, the part on the inside with respect to the inner tube portion 33 is called the mounting portion 35, and the part on the outside with respect to the inner tube portion 33 is called the base side flange portion 37.

[0035] The lighting fixture 101 is placed on the mounting portion 35. Therefore, the area below the lighting fixture 101 can be protected by the mounting portion 35. The mounting portion 35 is provided with an entrance hole 39 (see FIG. 3). The entrance hole 39 is formed as an elongated hole that is long from front to back. A power cable drawn from the concrete foundation is inserted into the entrance hole 39.

[0036] The base flange portion 37 is provided around the mounting portion 35. That is, the base flange portion 37 protrudes radially outward from the outer edge portion of the mounting portion 35 (the lower end portion of the inner cylinder portion 33) in a flange-like shape. The base 5 and the cover 3 are combined with each other such that the base flange portion 37 faces the cover flange portion 11. The outer diameter of the base flange portion 37 is approximately equal to the outer diameter of the cover flange portion 11. The inner diameter of the base flange portion 37 is approximately equal to the inner diameter of the cover flange portion 11.

[0037] The base flange portion 37 is provided with four base mounting holes 41 (see FIG. 3). The four base mounting holes 41 are provided at approximately equal intervals in the circumferential direction of the base flange portion 37. That is, the four base mounting holes 41 are provided at positions corresponding to the four cover mounting holes 29. Note that in FIG. 3, for convenience of illustration, the four base mounting holes 41 are shown shifted in the circumferential direction of the base flange portion 37 with respect to the four cover mounting holes 29. Each base mounting hole 41 is formed as an elongated hole that is long in the circumferential direction of the base flange portion 37 in order to adjust the irradiation direction as described later. That is, each base mounting hole 41 is formed in an arc shape with a central angle of approximately 30 degrees. A mounting screw is inserted into each base mounting hole 41.

[0038] An annular seal member 7 is provided on the inner edge of the upper surface of the base flange portion 37 so as to surround the inner tube portion 33 (see FIG. 3). The seal member 7 is a foam sheet based on polyvinyl chloride, and is attached to the inner edge of the upper surface of the base flange portion 37. When the base 5 and the cover 3 are combined, the seal member 7 is crushed between the base flange portion 37 and the cover flange portion 11, thereby exerting a water-stopping effect. This makes it possible to prevent water from entering the interior of the lighting protection device 1 from between the base flange portion 37 and the cover flange portion 11. In addition, a foam sheet (not shown) similar to the seal member 7 is also attached to the outer edge of the above-mentioned wire entrance hole 39, preventing water from entering from the wire entrance hole 39.

[0039] The inner cylinder portion 33 protrudes upward from the outer edge of the mounting portion 35. When the base 5 and the cover 3 are combined, the inner cylinder portion 33 is located inside the truncated cylinder portion 9. That is, the outer diameter of the inner cylinder portion 33 is slightly smaller than the inner diameter of the truncated cylinder portion 9. The height of the inner cylinder portion 33 is lower than the height of the truncated cylinder portion 9 at the bottom of the inclined surface 13, and in this embodiment, is about one-fourth the height. The inner cylinder portion 33 functions as a breakwater that prevents water from entering the lighting device 101 mounted on the mounting portion 35 inside the inner cylinder portion 33.

[0040] The inner cylinder portion 33 is provided with an inner cylinder side connecting hole 43. The inner cylinder side connecting hole 43 is provided at a position corresponding to the outer cylinder side connecting hole 25. The inner cylinder side connecting hole 43 is fitted with a connecting screw 27. A female thread is formed on the inner peripheral surface of the inner cylinder side connecting hole 43. A ground wire (not shown) is connected to the connecting screw 27.

[0041] 4, a construction procedure for protecting the lighting fixture 101 using the lighting protection fixture 1 will be described. In step S1, pilot holes for installation screws are formed in the concrete foundation at positions corresponding to the base-side installation holes 41.

[0042] In step S2, the pedestal 5 is installed on the concrete foundation.

[0043] In step S3, the lighting fixture 101 is placed on the placement portion 35 of the base 5.

[0044] In step S4, a fixture line (not shown) drawn from the lighting fixture 101 is connected to a power cable (not shown) drawn from the concrete foundation through the wire entrance hole 39 into the lighting protection fixture 1.

[0045] In step S5, plate fixing screws 111 of lighting fixture 101 are loosened, and upper support plate 105 is rotated relative to lower support plate 107 to adjust the irradiation angle. After adjustment, plate fixing screws 111 are tightened.

[0046] In step S6, cover 3 is placed over base 5 and lighting fixture 101 placed on base 5.

[0047] In step S7, the truncated cylinder portion 9 and the inner cylinder portion 33 are connected by the connecting screw 27.

[0048] In step S8, the irradiation direction is adjusted. First, the installation screw is driven into the pilot hole through the cover side installation hole 29 and the base side installation hole 41. Here, the installation screw is not tightened. Next, the base 5 and the cover 3 are rotated within the range in which the installation screw moves relatively within the cover side installation hole 29 and the base side installation hole 41, and the irradiation direction is adjusted so that the irradiation target is appropriately irradiated. At this time, since the base 5 and the cover 3 are connected by the connecting screw 27, the base 5 and the cover 3 can be easily rotated together.

[0049] In step S9, the installation screws are tightened to fix base 5 and cover 3 to the concrete foundation. After fixing luminaire 101, luminaire 101 is turned on and it is confirmed that the object to be irradiated is irradiated.

[0050] The construction procedure is not limited to the above, but can be modified as appropriate taking into account workability.

[0051] As described above, the lighting protection device 1 of the present embodiment protects the lighting device 101 that is installed near the ground. The lighting protection device 1 includes a cover 3. The cover 3 includes a truncated tubular portion 9. The truncated tubular portion 9 houses the lighting device 101. A light-transmitting portion 15 is provided on an inclined surface 13 of the truncated tubular portion 9. The light-transmitting portion 15 transmits light that is irradiated upward or diagonally upward from the lighting device 101.

[0052] According to this configuration, since the lighting fixture 101 is housed in the truncated tube portion 9, it is possible to prevent people from intentionally or inadvertently touching the lighting fixture 101 after the lighting fixture 101 is installed. Even if a ground object is placed on the inclined surface 13 of the truncated tube portion 9, the ground object slides down the inclined surface 13, so that the ground object is prevented from accumulating on the truncated tube portion 9. Therefore, it is possible to prevent the light emitted from the lighting fixture 101 from being blocked by the ground object. Note that the ground object refers to an object that may be placed on the inclined surface 13 from the ground due to wind or the like, and includes soil, fallen leaves, garbage, etc.

[0053] [Note] The following is a description of lighting protection devices. The lighting protection device is a lighting protection device for protecting a lighting device installed near the ground, and is equipped with a cover having a truncated tubular portion for housing the lighting device, and a light-transmitting portion is provided on the inclined surface of the truncated tubular portion to transmit light emitted upward or diagonally upward from the lighting device.

[0054] According to this configuration, since the lighting fixture is housed in the truncated tube portion, it is possible to prevent people from intentionally or inadvertently touching the lighting fixture after the lighting fixture is installed. Furthermore, even if ground objects such as dirt and fallen leaves are placed on the inclined surface of the truncated tube portion, the ground objects slide down the inclined surface, so that the ground objects are prevented from accumulating in the truncated tube portion. Therefore, it is possible to prevent the light emitted from the lighting fixture from being blocked by the ground objects.

[0055] In this case, it is preferable to provide a base having a mounting portion on which the lighting fixture is placed.

[0056] According to this configuration, the lower part of the lighting fixture can be protected by the mounting portion.

[0057] In this case, the base has a base side flange portion provided around the mounting portion, the cover has a cover side flange portion provided around the truncated tube portion and facing the base side flange portion, and it is preferable that the base side flange portion has a base side installation hole through which an installation screw for fixing the base and cover to the installation location of the lighting protection device is inserted, and the cover side flange portion has a cover side installation hole through which the installation screw is inserted.

[0058] According to this configuration, the installation screw can fix the base and the cover to the installation location, and can also join the base flange portion and the cover flange portion.

[0059] In this case, it is preferable that the base side mounting hole is formed as an elongated hole that is long in the circumferential direction of the base side flange portion, and the cover side mounting hole is formed as an elongated hole that is long in the circumferential direction of the cover side flange portion.

[0060] With this configuration, the base and cover can be rotated within the range in which the mounting screw moves relatively within the cover-side mounting hole and the base-side mounting hole, and the irradiation direction can be adjusted around a rotation axis parallel to the vertical direction.

[0061] In this case, it is preferable to provide a seal member provided between the base flange portion and the cover flange portion.

[0062] According to this configuration, it is possible to prevent water from entering the interior of the lighting protection device from between the base flange portion and the cover flange portion.

[0063] In this case, it is preferable that the base has an inner cylindrical portion that protrudes from the outer edge of the mounting portion and is located inside the truncated cylindrical portion.

[0064] According to this configuration, it is possible to prevent water from entering the lighting fixture placed on the mounting portion inside the inner tube portion.

[0065] In this case, it is preferable that the inner tube portion has an inner tube side connecting hole through which a connecting screw that connects the inner tube portion and the truncated tube portion is inserted, and that the truncated tube portion has an outer tube side connecting hole through which the connecting screw is inserted.

[0066] According to this configuration, the inner cylindrical portion and the truncated cylindrical portion can be connected by the connecting screw, and the base and the cover can be easily rotated together.

[0067] In this case, it is preferable that the truncated tube portion is provided with a vent hole, and the vent hole is provided with a filter portion.

[0068] With this configuration, it is possible to ensure ventilation between the inside and outside of the truncated tube portion while preventing foreign matter such as water and dust from entering the truncated tube portion through the ventilation hole, and it is possible to prevent condensation from forming inside the truncated tube portion. [Explanation of symbols]

[0069] 1: lighting protection device, 3: cover, 5: base, 7: sealing member, 9: truncated tube portion, 11: cover side flange portion, 13: inclined surface, 15: light-transmitting portion, 17: light-transmitting opening, 19: light-transmitting plate, 21: ventilation hole, 23: filter portion, 25: outer tube side connecting hole, 27: connecting screw, 29: cover side installation hole, 31: disc portion, 33: inner tube portion, 35: mounting portion, 37: base side flange portion, 39: wire entry hole, 41: base side installation hole, 43: inner tube side connecting hole, 101: lighting device, 103: LED board, 105: upper support plate, 107: lower support plate, 109: LED lamp, 111: plate fixing screw.

Claims

1. A lighting protection device for protecting a lighting device installed near the ground, a cover having a truncated tubular portion for receiving the lighting fixture; A lighting protection device characterized in that a light-transmitting portion that transmits light emitted upward or obliquely upward from the lighting device is provided on the inclined surface of the truncated tubular portion.

2. The lighting protection device according to claim 1 , further comprising a base having a mounting portion on which the lighting device is mounted.

3. The base has a base flange provided around the mounting portion, the cover has a cover-side flange portion provided around the truncated tube portion and facing the base-side flange portion, The base flange portion is provided with a base mounting hole through which a mounting screw for fixing the base and the cover to an installation location of the lighting protection device is inserted, 3. The lighting protection device according to claim 2, wherein the cover-side flange portion is provided with a cover-side installation hole through which the installation screw is inserted.

4. The base-side installation hole is formed as an elongated hole that is long in the circumferential direction of the base-side flange portion, The lighting protection device according to claim 3 , wherein the cover-side installation hole is formed as an elongated hole that is long in a circumferential direction of the cover-side flange portion.

5. 4. The lighting protection device according to claim 3, further comprising a seal member provided between the base flange portion and the cover flange portion.

6. 3. The lighting protection device according to claim 2, wherein the base has an inner cylindrical portion that protrudes from an outer edge of the mounting portion and is positioned inside the truncated cylindrical portion.

7. The inner cylinder portion has an inner cylinder side connecting hole through which a connecting screw that connects the inner cylinder portion and the truncated cylinder portion is inserted, 7. The lighting protection device according to claim 6, wherein the truncated tube portion is provided with an outer tube side connecting hole through which the connecting screw is inserted.

8. The truncated tube portion is provided with a vent hole, 2. The lighting protection device according to claim 1, wherein the ventilation hole is provided with a filter portion.

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