JP7354759B2 - Fall prevention wire and lamp unit - Google Patents

Description

The present invention relates to a fall prevention wire and a lamp unit.

For lighting devices such as road lights installed at high places indoors and outdoors, there is a risk of the device falling if the normal installation method (fastening the cap to the socket or screwing the lamp) becomes ineffective. Measures to prevent this may be required. As a means of this type, a method is known in which a lamp with a base and a lighting fixture body to which the lamp with a base is attached are connected using a fall prevention wire (see, for example, Patent Document 1).
Such a fall prevention wire has a first loop provided at one end connected to the lamp with a base, a second loop provided at the other end connected to the lighting fixture body, and a wire between one end and the other end. There is also known a lighting device in which a third loop is connected to the main body of the lighting device with a wire stretched so as to restrict the rotation of the base (for example, see Patent Document 2).
In addition, even for lighting fixtures where the lamp does not separate, fall prevention measures other than the normal installation method are required. A lighting device is also known in which the other end of the fall prevention wire is fixed to the ceiling with screws (for example, see Patent Document 3).

Japanese Patent Application Publication No. 2013-84439 Patent No. 6115382 Patent No. 5979378

By the way, the above lamp can be attached to various lighting equipment bodies. However, due to reasons such as design specifications, the methods for attaching fall prevention wires are not standardized, so it is necessary to select fall prevention wires in accordance with the respective attachment methods for the lamp and the lighting fixture body.
SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a fall prevention wire that can be used with a plurality of types of attachment methods, and a lamp unit to which this fall prevention wire is connected.

In order to achieve the above object, in a fall prevention wire that prevents a lamp unit from falling which is detachably attached to a lighting fixture body supported by a base part, the fall prevention wire is a single flexible wire. a member, integrally having a first connecting portion connectable to a wire connecting portion of the lamp unit at one end of the wire member, the wire member connecting the first connecting portion to the wire connecting portion; In this state, the other end of the wire member and a midway point between the one end and the other end of the wire member pass outside the lamp unit, and the base portion that supports the lighting fixture main body passes through the outside of the lamp unit. It has a length that reaches up to 100 mm, and integrally has a second connecting portion connectable to one of two types of wire connecting portions, at least one of which is provided on the base portion, at either the other end or the midway point. , characterized in that the other of the other end and the intermediate portion is integrally provided with another second connecting portion connectable to the other of the two types of wire connecting portions.

In the above configuration, the second connection part is one of the two types of wire connection parts when the second wire connection part connectable by fastening or crimping is provided in the base part. It may be a connection terminal connectable to the second wire connection part by.

Further, in the above configuration, when the other second connecting portion is provided in the base portion as the other of the two types of wire connecting portions, a third wire connecting portion connectable using a hook is provided. The hook may be available for connection to the third wire connection.

Further, in the above configuration, the wire member of the fall prevention wire may be formed of a material having electrical insulation properties.

Further, the present invention provides a lamp unit that is detachably attached to a lighting fixture body supported by a base portion and is prevented from falling by using the fall prevention wire.

According to the present invention, it is possible to provide a fall prevention wire that can be used with a plurality of types of attachment methods, or a lamp unit to which this fall prevention wire is connected.

1 is a side view of an example of a lighting device using a fall prevention wire according to a first embodiment of the present invention; FIG. FIG. 3 is a diagram of the lamp unit viewed diagonally from below together with the fall prevention wire. FIG. 3 is a side view of another lighting device that utilizes a fall prevention wire. FIG. 3 is a diagram of the lamp unit viewed diagonally from above together with the wire connection portion of another lighting device. It is a figure showing a fall prevention wire. It is a figure showing the fall prevention wire concerning a 2nd embodiment.

Embodiments of the present invention will be described below with reference to the drawings.
<First embodiment>
FIG. 1 is a side view of an example of a lighting device using a fall prevention wire according to a first embodiment of the present invention. Hereinafter, this lighting device 1A will be referred to as "first lighting device 1A."
The first lighting device 1A is installed by connecting a lighting device main body 2A installed at a high place indoors or outdoors, a lamp unit 3 attached to the lighting device main body 2A, and a lamp unit 3 and the lighting device main body 2A. A fall prevention wire 4 is provided to prevent the lamp unit 3 from falling later.

First, the lamp unit 3 will be explained.
FIG. 2 is a view of the lamp unit 3 together with the fall prevention wire 4 as seen diagonally from below.
The lamp unit 3 is an LED lamp that uses an LED as a light source and is equipped with a base 5, and is sometimes referred to as a lamp with a base or simply as a lamp. This lamp unit 3 can be attached to and detached from a plurality of types of lighting fixture bodies each having a socket 12 (FIG. 1) to which the base 5 can be attached and detached, and the lighting fixture body 2A shown in FIG. 1 and the lighting fixture body 2B described later are examples thereof. be. These lighting fixture bodies 2A and 2B correspond to different predetermined members capable of supporting the weight of the lamp unit 3. In this description, when there is no particular need to distinguish between the lighting fixture bodies 2A and 2B, or when the lighting fixture bodies to which the lamp unit 3 can be attached or removed are collectively referred to, they are referred to as "lighting fixture bodies 2."

The cap 5 is a screw-in type (rotation type) cap generally called an E-type cap, such as an E26 type or an E39 type. However, the cap 5 may be a plug-in cap or the like. Note that the lamp unit 3 may be a lamp using a light emitting element other than an LED.

This lamp unit 3 extends in a rod shape like a general HID lamp, emits light almost evenly from the entire circumference, and has a light output equivalent to an existing high-output discharge lamp such as an HID lamp. have However, while existing discharge lamps are lit with AC power, light emitting elements such as LEDs are lit with DC power. Therefore, by providing a power supply circuit for converting commercial power to DC power either inside or outside of the lamp unit 3, this lamp unit 3 can be used in place of an existing discharge lamp.
That is, the lighting fixture main body 2 to which the lamp unit 3 can be attached and detached is not limited to a lighting fixture main body newly developed to match the lamp unit 3, but includes a lighting fixture main body for an existing discharge lamp.

The lamp unit 3 includes a base end 6 where a base 5 is provided, a support 7 attached to the base end 6 on the opposite side of the base 5, and a plurality of light sources arranged to surround the support 7. It includes a unit 8 and a coupling member 9 to which each light source unit 8 is coupled.
In each light source unit 8, the proximal end portion on the base 5 side is fixed to the support body 7 using screws 10 at equal angular intervals (90 degrees in this embodiment), and the distal end portion is fixed to the support body 7 using screws 10. 11 to be fixed to the coupling member 9.

The coupling member 9 is a frame-shaped member extending along the tips of these light source units 8, and in this embodiment is formed by bending a metal plate made of stainless alloy. As shown in FIGS. 1 and 2, a first loop 21 is formed at one end of the fall prevention wire 4, and the portion including this loop 21 is passed through the inner opening 9A (FIG. 2) of the coupling member 9. By passing the other end of the fall prevention wire 4 through the loop 21, a winding portion M1 in which the fall prevention wire 4 is wound around the coupling member 9 is formed. The fall prevention wire 4 can be connected to the lamp unit 3 by this winding portion M1.
That is, in this lamp unit 3, the coupling member 9 also serves as a "first wire connection part" that can connect the fall prevention wire 4 to the lamp unit 3 using the loop 21.

Next, the lighting fixture main body 2A will be explained.
The lighting fixture main body 2A is a known lighting fixture main body to which a lamp unit 3 can be freely attached and detached. In FIG. 1, parts related to the lamp unit 3 and fall prevention wire 4 are shown and explained. The lighting fixture main body 2A is, for example, a lighting fixture main body used for a road light or a lighting fixture main body used for a known lighting device installed on a ceiling, and its external shape and detailed configuration are arbitrary. It is.
The lighting fixture main body 2A includes a socket 12 that functions as a holder that holds the lamp unit 3, and a base portion 13 that supports the socket 12. The socket 12 is capable of attaching and detaching the base 5 of the lamp unit 3, and when the base 5 is attached, the lamp unit 3 is physically supported, and the lamp unit 3 and the lighting fixture main body 2A are electrically connected. be done.

The base portion 13 has a hole 14 that opens downward at a location adjacent to the socket 12 . As shown in FIG. 1, by passing the screw 15 that can be fastened into the hole 14 through the round terminal 22 provided on the fall prevention wire 4 and fastening it into the hole 14, the terminal 22 is attached to the base. It is fixed at 13. That is, in the base part 13, the hole part 14 functions as a "second wire connection part" to which the drop prevention wire 4 can be connected using the terminal 22, and the entire base part 13 including the hole part 14 is connected to the lamp unit. It has enough strength to support the weight of 3.

FIG. 3 is a side view of another lighting device 1B that uses the fall prevention wire 4. Moreover, FIG. 4 is a diagram of the lamp unit 3 viewed diagonally from above together with the wire connection portion of another lighting device 1B. Hereinafter, this lighting device 1B will be referred to as "second lighting device 1B."
This second lighting device 1B is similar to the first lighting device 1A except for the lighting device body 2B, and specifically, the wire connection portion in the lighting device body 2B is different. Hereinafter, similar parts will be indicated with the same reference numerals, and redundant explanation will be omitted.

As shown in FIG. 3, the lighting fixture main body 2B has a base portion 13 that supports a socket 12 into which the lamp unit 3 is attached, and a shaft member 16 for fixing the fall prevention wire 4 to the base portion 13. It is provided. The shaft member 16 is made of stainless steel, and is supported by a stay 17 that projects downward from the base portion 13 so that it is supported horizontally with a space between it and the lower surface of the base portion 13, and the lamp unit 3 It has sufficient strength to support the weight of

A second loop 23 is formed in the middle of the fall prevention wire 4, and a hook 24 is attached to this loop 23. As shown in FIG. 4, the hook 24 is attached to the fall prevention wire 4 so that the portion including the second loop 23 is passed around the shaft member 16 to form a wrapped portion M2 wound around the shaft member 16.
The fall prevention wire 4 is connected to the lighting fixture main body 2B by this winding portion M2. That is, the shaft member 16 functions as a "third wire connection part" that connects the fall prevention wire 4 to the lighting fixture body 2B using the hook 24. Note that the shaft member 16 is not limited to a dedicated part used only as a wire connection part, but may be a part having other functions.

As described above, lighting devices in which the lamp unit 3 is detachable and have different types of wire connections, such as the first and second lighting devices 1A and 1B, are on the market. Therefore, in order to provide a lamp unit 3 that is compatible with lighting devices on the market, at least the first wire connection part (in FIG. connecting member 9), a second wire connection portion (hole 14 in FIG. 1) connectable using the terminal 22, and a third wire connection portion (hole 14 in FIG. 1) connectable using the hook 24. It is necessary to prepare a fall prevention wire that has a connection part that can accommodate three types of wire connection parts consisting of the shaft member 16) in 3.

Note that the first wire connection portion is not limited to the coupling member 9, and may be a hole through which the loop 21 can pass, and in short, a configuration that allows connection using the loop 21 may be applied. Further, the second wire connection portion is not limited to the configuration in which the terminals 22 are connected using the screws 15, but may be one in which the terminals 22 are connected using a crimping member such as a rivet or a fixing member other than the crimping member. It is also possible to have a structure in which the terminal 22 is directly clamped, and in short, a configuration that allows connection using the terminal 22 may be applied. Furthermore, the third wire connection portion is not limited to the shaft member 16, and any structure that can be connected using the hook 24 may be applied.

Next, the fall prevention wire 4 will be explained. In the following description, it is not necessary to particularly distinguish between the first lighting device 1A and the second lighting device 1B, and when referring to lighting devices having a lighting device main body 2 to which a lamp unit 3 can be attached or detached, “lighting device” will be used. 1”.
FIG. 5 is a diagram showing the fall prevention wire 4. As shown in FIG.
The fall prevention wire 4 includes a wire member 20 having flexibility, a first loop 21 for connecting the wire member 20 to a first wire connection portion (coupling member 9 in FIG. 2), and a wire member 20 having a bending property. A terminal 22 for connecting to the second wire connection part (hole 14 in FIG. 1) and a hook 24 for connecting the wire member 20 to the third wire connection part (shaft member 16 in FIG. 3) It is equipped with

The wire member 20 is formed by twisting stainless steel wire rods, and has sufficient strength, flexibility, flame retardancy, weather resistance, corrosion resistance, etc. Note that, in this embodiment, all of the locations where the wire member 20 contacts or is connected (including the first to third wire connection portions) are made of stainless steel alloy. This prevents electrolytic corrosion that occurs between dissimilar metals.
Note that metal materials other than stainless steel alloy may be used for the wire member 20. In this case as well, electrolytic corrosion occurring between dissimilar metals can be prevented by forming or coating the parts where the wire members 20 come into contact or are connected with the same metal material.

Moreover, if the performance required for the wire member 20 can be obtained, the wire member 20 may be formed of a material other than a metal material. For example, a wire member 20 made by twisting synthetic fiber wires may be used, and a preferable example of the synthetic fiber is aramid fiber. Aramid fibers include Kevlar (registered trademark), TECHNORA (registered trademark), and the like, and can easily satisfy various performances required of the wire member 20.
In addition, synthetic fibers including aramid fibers have electrical insulation properties that are different from metal materials, so even if a current leakage occurs, damage to each part of the lighting device 1 can be easily avoided. This is especially advantageous when each part of the lighting device 1 is not grounded (grounded). Furthermore, it also has the advantage of being suitable for use in environments where electrical insulation is required.

As shown in FIG. 5, the wire member 20 is composed of a single wire, and one end of the wire is bent into a loop shape, and the root portion of the loop shape is caulked with a caulking material 31. 1 loop 21 is formed. Furthermore, a round terminal 22 is attached to the other end of the wire member 20. This terminal 22 is connected to the other end of the wire member 20 by caulking the base portion of this terminal 22.
This terminal 22 is made of the same material as the wire member 20, that is, a stainless steel alloy. Note that the terminal 22 is not limited to a round terminal, but may be a cross-shaped terminal, for example, and a wide variety of known connection terminals used for various connections can be used.

The first loop 21 has a larger diameter than the terminal 22, and the terminal 22 can be easily passed through the first loop 21. This facilitates the work when passing the terminal 22 through the first loop 21 to form the winding portion M1, as shown in FIG.

A predetermined portion between one end and the other end of the wire member 20 is also bent into a loop shape, and a second loop 23 is formed by caulking the root portion of this loop shape with a caulking material 32. A hook 24 is attached to the loop 23 of No. 2.
The hook 24 is an annular hook whose openable portion 24K is closed by elastic force, as indicated by the symbol A in FIG. When the releasable portion 24K is pressed inward, the releasable portion 24K is opened, and the hook 24 can be easily attached to and removed from the second loop 23 through the opened portion. This hook 24 is also made of stainless steel, which is the same material as the wire member 20, and electrolytic corrosion between the hook 24 and the wire member 20 is prevented. Note that the shape of the hook 24 may be changed as appropriate, and a known hook may be applied to the hook 24.

Here, the second loop 23 is formed to have a diameter that allows the hook 24 to be easily attached and detached, and in this embodiment, it is formed to have the same diameter as the first loop 21.
As a result, other parts of the wire member 20 and the terminal 22 can be easily passed through the second loop 23, and a winding section similar to the winding section M1 using the first loop 21 shown in FIG. It can also be formed. Further, since the hook 24 can be removed from the second loop 23 and replaced with the first loop 21, a wrapping portion similar to the wrapping portion M2 using the second loop 23 shown in FIG. 3 can be formed. You can also do it. With these, it is possible to connect to various lighting equipment main bodies 2 using either the first loop 21 or the hook 24, and a wire connection section to which other lamp units 3 can be connected using the hook 24. In this case, the lamp unit 3 can also be connected to another lamp unit 3 using the first loop 21 and the hook 24.

The distance LA between one end of the wire member 20 (the position of the first loop 21) and the midway point (the position of the second loop 23) is the distance LA between the end of the wire member 20 (the position of the second loop 23) and the end of the wire member 20 (the position of the second loop 23). It is set longer than the distance LB from the other end (the position of the terminal 22).
As a result, even if the distance between the wire connection part (coupling member 9) on the lamp unit 3 side and the wire connection part (hole 14 or shaft member 16) on the lighting fixture body 2 side is relatively large, , it becomes easier to connect the fall prevention wire 4 to each wire connection portion.

For example, the distance LA is the connection part of the loop 21 in the lamp unit 3 and the connection part of the loop 23 (also equivalent to the connection part of the hook 24) in the plurality of types of lighting fixture bodies 2 (including the lighting fixture bodies 2A and 2B). The length is set according to the maximum separation distance between the This prevents the wire member 20 from becoming excessively long, making it easier to handle and connect the wire member 20. An example of this distance LA is 600 mm.
Furthermore, since the distance LB between the terminal 22 and the second loop 23 connected to the lighting fixture body 2 side is relatively short, the terminal 22 and the second loop 23 are connected to each other as illustrated in FIGS. 1 and 3. Can be placed compactly. However, it is preferable that the distance LB be set to a distance such that when one of the terminal 22 and the second loop 23 is used for connection work, the other is unlikely to get in the way.

As explained above, the fall prevention wire 4 of this embodiment functions as a first connection part connectable to the coupling member 9, which is the first wire connection part of the lamp unit 3, as shown in FIG. The first loop 21 that connects the lamp unit 3 to the hole 14 (FIG. 1) and the shaft member 16 (FIG. ), the terminal 22 and the second loop 23 function as a plurality of types of second connection parts connectable to the terminals 22 and 23, respectively. As a result, the same fall prevention wire 4 can be used to prevent the lamp unit 3 from falling, regardless of whether the lamp unit 3 and the lighting fixture body 2A are combined together or the lamp unit 3 and the lighting fixture body 2B are combined. .
Therefore, the fall prevention wire 4 can be made common for each combination of the lamp unit 3 and the plurality of types of lighting fixture bodies 2 in which the attachment methods for the fall prevention wire 4 are different. In other words, it is possible to provide a general-purpose fall prevention wire 4 that can be used in various combinations of the lamp unit 3 and the lighting fixture body 2. In this way, it is possible to provide a fall prevention wire 4 that can be used with a plurality of types of attachment methods.

Further, the fall prevention wire 4 has a first loop 21, a terminal 22, and a second loop as first and second connecting portions that can be connected to the wire connecting portions of the lamp unit 3 and the lighting fixture bodies 2A and 2B. It has three types of connection parts consisting of 23. This makes it easier to connect the fall prevention wire 4 in accordance with the attachment method of each wire connection portion. Further, it becomes easier to connect the drop prevention wire 4 to the lighting equipment main bodies 2 other than the lighting equipment main bodies 2A and 2B.

Further, a first loop 21 functioning as a first connection part is provided at one end of the wire member 20 of the fall prevention wire 4, and a different Since the terminals 22 and the second loops 23 functioning as different second connection parts connectable to the wire connection parts are provided, the fall prevention wire 4 can be manufactured using one wire member 20.

Moreover, the distance LA (FIG. 5) between one end of the wire member 20 and the midway point is longer than the distance LB (FIG. 5) between the other end and the midway point (the second loop 23). (LA>LB). This makes it easy to connect the fall prevention wire 4 even if the wire connection portion on the lamp unit 3 side and the wire connection portion on the lighting fixture body 2 side are relatively apart.
Moreover, the second connection parts (the terminal 22 and the second loop 23), either of which is connected to the wire connection part on the side of the lighting fixture body 2, can be arranged relatively close, and these can be arranged compactly.

Furthermore, since the wire connection portions of the lamp unit 3 and the lighting fixture bodies 2A and 2B, and the drop prevention wire 4 are made of the same metal material, electrolytic corrosion that occurs between different metals can be prevented. Furthermore, instead of forming the wire member 20 using a metal material, the wire member 20 of the fall prevention wire 4 may be formed from a material having electrical insulation properties. In this case, even if electrical leakage occurs, it is possible to easily avoid damage to various parts.

In addition, when connecting the fall prevention wire 4, for example, by connecting the fall prevention wire 4 to the lamp unit 3 using the first loop 21 of the fall prevention wire 4, the wire of the lighting fixture body 2 can be connected. This makes it easier to select the second connection part (terminal 22 and second loop 23) that matches the connection part. Further, the lamp unit 3 to which the fall prevention wire 4 is connected, or a product including the fall prevention wire 4 and the lamp unit 3 as a set may be traded.

Although a mode has been described in which the fall prevention wire 4 is connected to the lamp unit 3 using the first loop 21 of the fall prevention wire 4, the present invention is not limited to this. For example, in the case of different lamp units 3, the fall prevention wire 4 may be connected to the lamp unit 3 using either the terminal 22 or the second loop 23 of the fall prevention wire 4.
Even in this case, the fall prevention wire 4 has a plurality of remaining connection parts (either the first loop 21, the second loop 23, or the terminal 22), so the remaining connection parts can be used to prevent the fall. The wire 4 may be connected to the lighting fixture main body 2.

<Second embodiment>
FIG. 6 is a diagram showing the fall prevention wire 4 according to the second embodiment.
This fall prevention wire 4 is similar to the first embodiment in that a first loop 21 is provided at one end of the wire member 20. On the other hand, this fall prevention wire 4 is provided with a second loop 23 connectable to one of the lighting fixture bodies 2A and 2B at the other end of the wire member 20, and a second loop 23 is provided at the other end of the wire member 20. This embodiment differs from the first embodiment in that another wire member 20W is provided extending from the location, and a terminal 22 connectable to the other of the lighting fixture bodies 2A, 2B is provided at the tip of the other wire member 20W.

The other wire member 20W is made of the same material as the wire member 20, and if the wire member 20 is made of stainless steel, it is made of the same stainless steel alloy, and if the wire member 20 is made of synthetic fiber such as aramid fiber, it is made of the same material. Formed using synthetic fibers.
The other wire member 20W is formed of a single flexible wire, and is connected to the wire member 20 by caulking the base end with a caulking material 33.

Note that the distance LA between the position of the first loop 21 and the intermediate point (the position of the second loop 23) is the same as in the first embodiment, and the distance LA between the intermediate point (the position of the second loop 23) and The distance LB from the other end of the wire member 20 (the position of the terminal 22) is also the same as in the first embodiment. As a result, the length of the wire member 20 is only about the distance LA, which is shorter than the wire member 20 of the first embodiment. Furthermore, the distance LB can be easily changed by adjusting the length of the other wire member 20W.

In the second embodiment, the other end of the main wire member 20 is provided with either the terminal 22 or the second loop 23 that functions as a plurality of types of second connection portions, and the remaining A second connection portion (terminal 22 or second loop 23) is provided. Thereby, the distance LA can be adjusted independently by adjusting the length of the wire member 20, and the distance LB can be adjusted independently by adjusting the length of the other wire member 20W. Moreover, the configuration allows for easy addition of sets of other wire members 20W and second connecting portions, and a plurality of these sets may be provided.
Further, in the second embodiment, as in the first embodiment, various effects can be obtained, such as being able to provide a fall prevention wire 4 that can be used with a plurality of types of attachment methods.

In the above description, a case has been described in which the lighting fixture main body 2 and the lamp unit 3 having a light source are configured to be detachable, and the lighting fixture main body 2 and the lamp unit 3 are connected with the fall prevention wire 4. When the lighting equipment body (equivalent to a lamp unit) is configured so that it cannot be separated or is difficult to attach or detach (also referred to as a lamp), the fall prevention wire 4 is used to prevent the lighting equipment body from falling. It's okay.
For example, as exemplified in Patent Document 3, one end of a fall prevention wire is wrapped around the main body (corresponding to a lamp unit) of a high ceiling lighting fixture with an integrated light source, and installation of the ceiling or beam on which the lighting fixture main body is installed. The fall prevention wire 4 of this embodiment can also be applied to the case where the other end of the fall prevention wire is screwed and fixed to a structure (equivalent to a predetermined member capable of supporting the weight of the lamp unit).

In addition, for road lights or street lights that have a built-in light source such as an LED, one end of the fall prevention wire is attached to the lighting equipment body (equivalent to a lamp unit) with an integrated light source by wrapping it around the pole, etc. to which the lighting equipment body is attached. When attaching the other end of the fall prevention wire to an installation structure (equivalent to a predetermined member capable of supporting the weight of the lamp unit) by fixing it with a screw or directly hooking it, the fall prevention wire 4 of this embodiment can be used. Can be applied.
Note that the material of the fall prevention wire 4, the type of connection part, etc. may be the same as those in each embodiment, or may be changed as appropriate depending on the type of lighting equipment, environment, etc.

Each of the embodiments described above is merely an example of one aspect of the present invention, and can be arbitrarily modified and applied without departing from the spirit of the present invention. For example, the number of loops 21 and 23, the number of terminals 22, and the number of hooks 24 provided on the fall prevention wire 4 may be changed as appropriate, or the types of these may be increased or decreased. As an example, if the lamp unit 3 or the lighting fixture main body 2 has a configuration that allows connection with other than the above three types (loop, terminal, hook), it is preferable to add another connection part. Further, a set of the wire member 20 and the second connection portion of the second embodiment may be added to the fall prevention wire 4 of the first embodiment. Further, the lamp unit 3 is not limited to a lamp provided with the base 5, and the lamp unit 3 and the lighting fixture main body 2 are not limited to those installed at a high place.

1 Lighting device 1A First lighting device 2A Second lighting device 2, 2A, 2B Lighting device main body 3 Lamp unit 4 Fall prevention wire 5 Base 9 Coupling member (first wire connection part)
14 Hole (second wire connection part)
16 Shaft member (third wire connection part)
20 Wire member 20W Other wire member 21 First loop (first connection part)
22 Terminal (second connection part)
23 Second loop (second connection part)
31-33 Caulking material

Claims (5)

In a fall prevention wire that prevents a lamp unit from falling , which is detachably attached to a lighting fixture body supported by a base part ,
The fall prevention wire includes a single wire member having flexibility,
integrally having a first connecting portion connectable to a wire connecting portion included in the lamp unit at one end of the wire member ;
The wire member has the other end of the wire member and a midway point between the one end and the other end of the wire member connected to the lamp with the first connecting portion connected to the wire connecting portion. The length is such that it passes through the outside of the unit and reaches the base portion that supports the lighting fixture body,
integrally having a second connection part connectable to one of two types of wire connection parts, at least one of which is provided on the base part, at either the other end or the intermediate location;
The other of the other end and the intermediate portion is integrally provided with another second connecting portion connectable to the other of the two types of wire connecting portions.
A fall prevention wire characterized by: The second connection portion is one of the two types of wire connection portions, and when a second wire connection portion connectable by fastening or crimping is provided on the base portion, the second wire connection portion is connected to the second wire connection portion by the fastening or crimping. The drop prevention wire according to claim 1, wherein the drop prevention wire is a connection terminal connectable to a wire connection portion of the wire. The other second connection portion is the third wire connection portion when the base portion is provided with a third wire connection portion connectable using a hook as the other of the two types of wire connection portions. The fall prevention wire according to claim 2, characterized in that the hook is usable for connection to a connecting part. The fall prevention wire according to any one of claims 1 to 3, wherein the wire member is made of an electrically insulating material. A lamp unit that is detachably attached to a lighting fixture body supported by a base portion and is prevented from falling using the fall prevention wire according to any one of claims 1 to 4.

Images