JP7716617B2 - Lighting fixtures and lighting equipment - Google Patents

Description

The present invention relates to a lighting fixture mounted on the end of a pole, and a lighting apparatus having a lighting fixture mounted on the end of a pole.

Conventionally, lighting fixtures that are attached to the end of a pole are known. For example, Patent Document 1 discloses an adapter that has a cylindrical mounting portion to which a lighting fixture can be attached and that is fixed to the pole by inserting the upper end of the pole. In the adapter described in Patent Document 1, the pole has a cylindrical joint portion that fits into the mounting portion of the adapter. The joint portion has a predetermined height in the vertical direction. The lighting fixture is fixed to the pole by fitting the mounting portion into the adapter to which the lighting fixture is attached.

JP 2018-181719 A

However, the above-mentioned Patent Document 1 has the problem that when an external force is applied to the lamp or adapter, the lamp may be lifted up and become unstable.

The present invention was made in consideration of the above-mentioned issues, and aims to provide a lighting fixture and lighting equipment that prevents the lighting fixture from falling from the pole.

A lighting fixture according to one aspect of the present disclosure comprises a lighting fixture body, a metal plate protruding outward from the lighting fixture body, and a fall prevention member fixed to the metal plate. The lighting fixture body has a light source and an adapter portion capable of fixing a cylindrical pole. The adapter portion has an opening into which one end of the pole can be inserted. The metal plate protrudes from the opening outward from the lighting fixture body. The fall prevention member has a fall prevention rod that is thinner than the maximum width of the opening, and a connecting member that swingably fixes the fall prevention rod to the metal plate.

Furthermore, a lighting fixture according to one aspect of the present disclosure includes a lamp and a pole, with the lamp mounted on the end of the pole.

A lighting fixture and lighting apparatus according to one aspect of the present disclosure can prevent the lighting fixture from falling from the pole.

FIG. 1 is an overall perspective view of a lamp according to an embodiment; FIG. 1 is an overall perspective view of a lamp according to an embodiment, excluding a globe; 1 is a vertical cross-sectional view of a lamp according to an embodiment of the present invention; 1 is a vertical cross-sectional view of a connecting member according to an embodiment;

The following describes a lighting fixture and a lighting apparatus according to an embodiment with reference to the drawings. Note that the embodiments described below are all comprehensive or specific examples. The numerical values, shapes, materials, components, component placement and connection configurations, and process sequences shown in the following embodiments are merely examples and are not intended to limit the present disclosure. Furthermore, among the components in the following embodiments, components that are not described in the independent claims that represent the highest concept are described as optional components.

Furthermore, each drawing is a schematic diagram and is not necessarily a precise illustration. Furthermore, in each drawing, substantially the same configuration is given the same reference numeral, and duplicated explanations may be omitted or simplified. This is to avoid unnecessary redundancy in the explanation and to facilitate understanding by those skilled in the art.
(Embodiment)
Fig. 1 is an overall perspective view of a lamp according to an embodiment. Fig. 2 is an overall perspective view of the lamp according to the embodiment excluding a globe. Fig. 3 is an overall vertical cross-sectional view of the lamp according to the embodiment. Fig. 4 is a vertical cross-sectional view of a connecting member according to the embodiment.

The following describes the lighting fixture and lighting equipment according to the embodiment, using Figures 1 to 4. Note that in Figures 1 to 4, only the end of the pole 2 (described later) on the lighting fixture side is shown, with other parts omitted. Also, in Figures 1 to 4, the longitudinal direction of the pole 2 is defined as the vertical direction, and the plane with the vertical direction as its normal direction is defined as the horizontal plane.

As shown in FIG. 1, the lighting fixture 1 comprises a lighting fixture body 10, a metal plate 20 protruding from the outside of the lighting fixture body 10, and a fall prevention member 30 fixed to the metal plate 20. The lighting fixture body 10 has a light source 11, a base 12, a top plate 13, and a globe 14. The globe 14 is made of a translucent material such as glass or resin, and diffuses and transmits light emitted by the light source 11 to the outside of the lighting fixture body 10. The lighting fixture 3 according to the embodiment is a street light comprising the lighting fixture 1 and a pole 2, with the lighting fixture 1 mounted on the end of the pole 2.

The base 12 has an adapter portion 120 and a columnar portion 121. The adapter portion 120 has an opening 120a at one end, a pole contact portion 120b, and a pole fixing portion 120c. In this embodiment, the end of the adapter portion 120 opposite the opening 120a is closed.

The method for fixing the pole 2 in the adapter part 120 will now be described in detail. First, one end of the cylindrical pole 2 is inserted into the opening 120a. When the pole 2 is fully inserted, the end of the pole 2 on the inserted side comes into contact with the pole contact part 120b. The inner surface of the pole contact part 120b has stepped protrusions with different protrusion amounts. In this embodiment, each of the stepped side surfaces of the protrusions has approximately the same center in a horizontal cross section. When fixed, the pole 2 is positioned so that its side surface is aligned with the side surface of the pole contact part 120b. In this embodiment, the pole contact part 120b has three side surfaces. Therefore, poles with at least three different outer diameters can be inserted.

However, the pole contact portion 120b only needs to have a side that conforms to the side of the pole 2, and the shape of the protrusion and side surface are not limited to those described in the embodiment. Furthermore, the protrusion is not limited to a stepped shape. Even if a stepped protrusion is used, the number of steps is not limited to three as described in the embodiment.

Next, the pole 2 inserted into the opening 120a is fixed by the pole fixing part 120c. In this embodiment, the pole fixing part 120c has a screw that is long in one direction. The screw of the pole fixing part 120c is attached to the pole 2 so that it can move in the radial direction of the pole 2. Therefore, by tightening the screw of the pole fixing part 120c, the screw of the pole fixing part 120c presses the pole 2 from the side, thereby fixing the pole 2.

In this embodiment, two pole contact portions 120b are provided. Therefore, the pole 2 is fixed at three points: two or more pole contact portions 120b and the pole fixing portion 120c. Therefore, the lighting fixture 1 according to this embodiment can further stabilize the lighting fixture body 10. Note that the number of pole contact portions 120b is not limited to two, and may be one, or three or more.

The light source 11 is, for example, a solid-state light-emitting element. The light source 11 also has a drive circuit mounted on a substrate that drives the solid-state light-emitting element. As shown in FIG. 2, the light source 11 is fixed to the base 12 via a light source mounting portion 110. In this embodiment, the light source mounting portion 110 fixes the light source 11 so that it faces the inner surface of the globe 14.

The light source mounting portion 110 has a screw for fixing the light source 11 and a screw for attaching the light source mounting portion 110 to the base portion 12. The solid-state light-emitting element of the light source 11 is, for example, an LED (Light Emitting Diode).

The columnar portion 121 has a side surface 122 and is surrounded by a globe 14. In this embodiment, the light source 11 is attached to the side surface 122 via the light source mounting portion 110. The light source 11, light source mounting portion 110, columnar portion 121, and side surface 122 are thermally connected. More specifically, the light source mounting portion 110, columnar portion 121, and side surface 122 are at least partially made of a thermally conductive material and are in thermal contact with each other. The thermally conductive material is, for example, a metal such as an aluminum alloy. The light source 11 also has a power supply line (not shown) and can emit light by receiving power from an external source via the power supply line. In this embodiment, the power supply line has a connection terminal that can be connected to one end of an electric wire that supplies power from an external source. The power supply line is, for example, a lead wire.

As shown in FIG. 3 , the top plate 13 has a heat dissipation section 140. The heat dissipation section 140 is provided above the top plate 13 and is thermally connected to the columnar section 121. As described above, the light source 11 and the columnar section 121 are thermally connected, so the heat dissipation section 140 can dissipate heat generated by the light source 11. In this embodiment, the heat dissipation section 140 is a plurality of heat dissipation fins arranged radially. The heat dissipation section 140 may also be molded integrally with at least a portion of the columnar section 121. In this case, the heat dissipation section 140 can efficiently dissipate heat generated by the light source 11. The top plate 13 may also have a screw section to which an external member can be attached.

The metal plate 20 protrudes from the opening 120a to the outside of the lighting fixture body 10. The metal plate 20 is attached to the columnar portion 121, and a power supply line for supplying power to the light source 11 can be attached to the metal plate 20. In this embodiment, the power supply line connected to the light source 11 and the power supply line connected to an external power source are clamped by an annular member that can be screwed onto the metal plate 20. The terminals of the power supply line connected to the light source 11 and the power supply line connected to the external power source are connected on the metal plate 20.

As a result, the lighting fixture 1 according to this embodiment does not require a separate component for securing the power supply line, simplifying its structure. Furthermore, since the wiring can be performed on the metal plate 20, the wiring work is easy. Furthermore, the power supply line can be easily introduced into the pole 2. Note that the method for securing the power supply line on the metal plate 20 is not limited to the above. For example, it may be clamped using an elastic body.

Furthermore, a fall prevention member 30 is fixed to the metal plate 20 so that it can swing. In this embodiment, the metal plate 20 has a through hole 211. More preferably, the through hole 211 is provided in a portion of the metal plate 20 that protrudes outside the lighting fixture body 10. In this case, the long metal plate portion 210 of the metal plate 20 is less likely to bend or sway compared to wire, etc., making it easier to introduce the metal plate 20 into the pole 2.

In this embodiment, the metal sheet 20 is formed by bending a single sheet of metal into a U-shape, and includes a metal sheet bottom portion 200 attached to the column portion 121, and a pair of elongated metal sheet portions 210 that are elongated in the vertical direction. This configuration allows the lamp 1 according to this embodiment to increase the strength of the metal sheet 20. In this case, it is preferable that at least one of the elongated metal sheet portions 210 protrudes outside the lamp body 10.

The fall prevention member 30 includes a fall prevention rod 300 and a connecting member 310. The fall prevention rod 300 is fixed to at least one of the long sheet metal portions 210 by the connecting member 310.

As shown in Figure 4, the fall prevention rod 300 is a rod-shaped member that is thinner than the maximum width of the opening 120a and has a through-hole 301 at one end. In this embodiment, the fall prevention rod 300 is thinner than the inner diameter of the pole 2, so the fall prevention rod 300 can be inserted inside the pole 2.

The connecting member 310 is a ring-shaped member that is long in one direction. Its length in the long direction is shorter than the maximum width of the opening 120a. In this embodiment, the length of the connecting member 310 in the long direction is shorter than the inner diameter of the pole 2. This makes it less likely for the fall prevention member 30 to get caught on the pole 2, making it easier to insert the fall prevention member 30 into the pole 2.

As mentioned above, the metal plate 20 and the fall prevention bar 300 have through holes 211 and 301, respectively. The connecting member 310 passes through the through holes 211 and 301, thereby fixing the fall prevention bar 300 to the metal plate 20 in a manner that allows it to be rotated freely. In this embodiment, the connecting member 310 has an opening/closing structure in which part of the ring opens and closes. Therefore, the connecting member 310 passes through the through holes 211 and 301 with the opening/closing structure open, and by closing the opening/closing structure, the fall prevention bar 300 can be fixed to the metal plate 20 in a manner that allows it to be rotated freely.

Here, we will explain in detail how the lighting fixture 1 behaves when excessive external force is applied. When a vertically upward external force is applied, the lighting fixture 1 may be lifted up. In this case, because the lighting fixture 1 has a fall prevention member 30, a vertically downward load is applied to the lighting fixture 1 due to the weight of the fall prevention member 30. Furthermore, even if the lighting fixture 1 is lifted too much and comes off the pole 2, the fall prevention rod 300 will catch inside the pole 2. Therefore, the fall prevention member 30 can prevent the lighting fixture 1 from falling from the pole 2.

As described above, the connecting member 310 fixes the fall prevention rod 300 to the metal plate 20 so that the angle can be freely adjusted. Therefore, when the lighting fixture 1 comes off the pole 2 and the fall prevention rod 300 gets caught inside the pole 2, the external force acting on the fall prevention rod 300 or the connecting member 310 can be easily released, and damage to the fall prevention member 30 can be prevented.
(effect)
Here, the main points of the lighting fixture and the lighting apparatus according to the embodiment will be explained again.

A lighting fixture 1 according to the embodiment includes a lighting fixture main body 10, a metal plate 20 protruding outward from the lighting fixture main body 10, and a fall prevention member 30 swingably fixed to the metal plate 20. The lighting fixture main body 10 has a light source 11 and an adapter part 120 to which a cylindrical pole 2 can be fixed. The adapter part 120 has an opening 120a into which one end of the pole 2 can be inserted. The metal plate 20 protrudes outward from the lighting fixture main body 10 through the opening 120a. The fall prevention member 30 has a fall prevention rod 300 that is narrower than the maximum width of the opening 120a, and a connecting member 310 that swingably fixes the fall prevention rod 300 to the metal plate 20.

The lighting fixture 1 having the above-described configuration can prevent the lighting fixture 1 from falling from the pole 2.

Furthermore, in the lighting fixture 1 according to this embodiment, the connecting member 310 may be elongated in one direction. The length of the connecting member 310 in the elongated direction may be shorter than the maximum width of the opening 120a.

The lighting fixture 1 having the above-described configuration makes it easier to insert the fall prevention rod 300 into the interior of the pole 2.

Furthermore, in the lighting fixture 1 according to the embodiment, the metal plate 20 and the fall prevention rod 300 may have through holes 211 and 301, respectively. The connecting member 310 may be an annular member that passes through the respective through holes 211 and 301 to connect the metal plate 20 and the fall prevention rod 300.

When the lamp 1 is detached from the pole 2 and the fall prevention rod 300 becomes caught inside the pole 2, the lamp 1 having the above-described configuration can more easily release the external force acting on the fall prevention rod 300 or the connecting member 310, thereby preventing damage to the fall prevention member 30. Furthermore, in the lamp 1 according to the embodiment, the metal plate 20 may have a fixing portion capable of fixing the power supply line to the light source 11.

The lighting fixture 1 having the above-described configuration can simplify its structure.

The lighting fixture 3 according to the embodiment includes a lamp 1 and a pole 2, with the lamp 1 mounted at the end of the pole 2.

The lighting fixture 3 having the above-described configuration can prevent the lighting fixture 1 from falling off the pole 2.
(Other embodiments)
Although the lamp 1 and the lighting fixture according to the embodiment have been described above, the lamp 1 and the lighting fixture 3 according to the present disclosure are not limited to the embodiment.

For example, the metal sheet 20 does not necessarily have to be formed by bending a single metal plate into a U-shape, as long as it is elongated in the vertical direction. For example, the metal sheet 20 may be L-shaped and comprised of a bottom metal sheet portion attached to the columnar portion 121 and a single elongated metal sheet portion that is elongated in the vertical direction.

Furthermore, the connecting member 310 does not necessarily have to be an annular member. For example, the connecting member 310 may be composed of a screw having a screw head and a threaded portion, and a nut that threads onto the threaded portion. In this case, the inner diameter of the through holes 211, 301 is longer than the threaded portion and shorter than the outer diameter of the screw head and nut. Furthermore, the connecting member 310 may be integral with either the metal plate 20 or the fall prevention bar 300.

Furthermore, the light source 11 does not have to be attached to the columnar portion 121, but may be attached to the adapter portion 120. In this case, it is preferable that the adapter portion 120 is thermally connected to the heat dissipation portion 140.

Furthermore, the light source attachment portion 110 is not an essential component, and the light source 11 may be attached directly to the base portion 12 with an adhesive or the like. In this case, it is preferable that the adhesive has thermal conductivity.

The lamp 1 may also have components other than the lamp body 10, such as a cap that protects the top plate 13. In this case, the cap may be fixed to a screw portion of the top plate 13.

Reference Signs List 1 Lighting fixture 10 Lighting fixture body 11 Light source 120 Adapter part 120a Opening 20 Metal plate 211 Through hole 30 Fall prevention member 300 Fall prevention rod 301 Through hole 310 Connection member 2 Pole 3 Lighting fixture

Claims (5)

The lamp includes a lamp body, a metal plate protruding outward from the lamp body, and a fall prevention member pivotably fixed to the metal plate,
The lighting fixture body has a light source and an adapter part to which a cylindrical pole can be fixed,
the adapter portion has an opening into which one end of the pole can be inserted,
The metal plate protrudes from the opening to the outside of the lamp body,
The fall prevention member is a lighting fixture having a fall prevention rod that is thinner than the maximum width of the opening, and a connecting member that fixes the fall prevention rod to the metal plate so that it can swing. The connecting member is elongated in one direction,
The lamp according to claim 1 , wherein the length of the connecting member in the longitudinal direction is shorter than the maximum width. The metal plate and the fall prevention rod each have a through hole,
3. The lamp according to claim 1, wherein the connecting member is an annular member that passes through each of the through holes to connect the metal plate and the fall prevention rod. The lamp according to claim 1 , wherein the metal plate has a fixing portion to which a power supply line to the light source can be fixed. A lighting fixture comprising: the lighting fixture according to any one of claims 1 to 4; and a pole;
A lighting fixture having the lighting fixture attached to the end of the pole.