JPH1153930A - Explosion-proof type fluorescent lamp device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an explosion-proof type fluorescent lamp device capable of pulling out a cap body, a socket and a fluorescent lamp, when the cap body is removed by coupling the cap body of a container for housing the fluorescent lamp with the socket. SOLUTION: Connection terminals 40 are protruded on an outer circumference face of a socket 24, terminal plug-in ports 246 which engage fluorescent lamp terminals are provided at a front face part, a bottom plate 270 of a U-shaped coupler 27 at a cap body 26 is provided turnably at a cap body center, the socket 24 and the cap body 26 are coupled with each other through engagement with engaging means provided at a rear part of the socket part 24, the socket 24 is inserted into a socket holder 21 to be mounted to a lighting fixture, and the cap body 26 is screw-coupled with a socket holder 21. The socket holders 21 are mounted in pairs at both ends of the lighting fixture, and a cylinder shaped protection cover is mounted. The fluorescent lamp is mounted in a protective cover, and is lit.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an explosion-proof fluorescent lamp device, and more particularly to an explosion-proof fluorescent lamp device characterized by a socket mounting device and a device for preventing a connection screw connecting a lamp box body and a lamp body from being lost. Device.

[0002]

2. Description of the Related Art In an explosion-proof fluorescent lamp device, a fluorescent lamp and a socket are housed in a container having a sealed structure. Generally, a socket and a fluorescent lamp are provided between a socket provided at an end of the container and a container lid. In many cases, a pressing member is provided to secure the connection with the terminal. For this reason, since the replacement work of the fluorescent lamp is performed after opening the lid of the container and then pulling out the socket and the fluorescent lamp after removing the pressing member,
Care must be taken to prevent the container lid, the pressing member, the socket, and the fluorescent lamp from falling during the operation.

[0003] In this type of lamps, the lamps are often installed close to each other, and it may not be possible to replace the fluorescent lamp in the container simply by removing the lid. For this reason,
A lamp body including a container in which a fluorescent lamp is mounted is separated from a lamp box housing a ballast and the like, and one end is connected with a hinge, and the other end is connected with a connecting screw.

Conventionally, there has been an accident that the connecting screw is lost when the connecting screw is removed when replacing the fluorescent lamp. Explosion-proof fluorescent lamps are often mounted on ceilings in factories and the like, and the loss of connecting screws when replacing fluorescent lamps is performed at high places can cause a significant decrease in work efficiency.

As an example of the prior art, there is a socket mounting device for an explosion-proof fluorescent lamp described in Japanese Utility Model Publication No. 58-54730 shown in FIG. In this prior art, a socket mounted in a container and a pressing member are connected, and the socket can be stably fixed and the fixing state can be easily released. The workability and safety at the time were improved.

[0006] However, in the above-mentioned prior art, the lid, the socket and the pressing portion are separated from each other.
Since the socket and the fluorescent lamp are also separated, the replacement of the fluorescent lamp cannot always be said to be safe and efficient, and more convenience is required at present.

[0007]

SUMMARY OF THE INVENTION It is an object of the present invention to connect a cover of a container for accommodating a fluorescent lamp or the like to a socket and provide the socket with a clamping function for clamping a terminal of the fluorescent lamp. Accordingly, an object of the present invention is to provide an explosion-proof fluorescent lamp device provided with a socket mounting device capable of pulling out a socket and a fluorescent lamp together with the lid by removing the lid.

Another problem to be solved by the present invention is that when a fluorescent lamp is replaced, a lamp box housing a ballast and the like and a lamp body including a container housing a fluorescent lamp and the like. An object of the present invention is to provide an explosion-proof fluorescent lamp device including a connection screw loss prevention device that prevents a connection screw that is connected and fixed from being lost.

[0009]

A first aspect of the present invention corresponds to claims 1 to 4, wherein a socket holder formed in a cylindrical shape, a socket to be inserted into the socket holder, and a threaded connection to the socket holder. A cover is provided, the socket is provided with an engagement means behind the terminal insertion port for fitting the terminal of the fluorescent lamp, the cover is provided with a rotatable connector on a surface provided with a female screw, and a socket is provided. The connector of the lid is connected to the engaging means, inserted into the socket holder, and the lid is covered on the socket holder.

The engaging means is an engaging recess in which the recesses face each other, the connector has a U-shaped cross section, and the bottom plate is rotatably fitted to a shaft provided at the center of the lid. The front end of the character is bent outward to form an engagement edge, and the socket and the lid are coupled by engaging the engagement edge with the engagement recess.

Further, the engaging edge portion is characterized in that a stopper groove having a length corresponding to the engaging concave portion is formed.

Further, the engaging edge portion is characterized in that one corner portion of the end portion is formed in a round portion.

According to a second aspect of the present invention, a lamp box housing a ballast and the like and a lamp body mounting a fluorescent lamp are hinged at one end. The fluorescent lamp is connected and the other end is fixed with a connecting screw, the connecting screw being rotatably loosely mounted on the soft plastic band, and the plastic band is mounted on the side plate of the lamp box body. It is characterized by having.

A third solution of the present invention corresponds to claim 6, in which a cylindrical socket holder is fixed to both ends of a lamp body with both ends of a protective cover fitted. The socket holder is provided with a rotatable connector provided on the cover and the engaging means of the socket having engaging means provided on the opposite side facing the rear of the terminal insertion hole for fitting the terminal of the fluorescent lamp. Insert in the coupled state and cover the lid,
The other socket holder is characterized in that a spring is attached to the rear of the socket to cover the lid.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS First, the overall structure of an explosion-proof fluorescent lamp will be described. 1 shows an explosion-proof fluorescent lamp, FIG. 2 shows a cross-sectional view of a lamp, FIG. 3 shows a mounting state of a connecting screw, and FIG. 4 shows a state where the lamp body is inclined.

An explosion-proof fluorescent lamp 1 comprises a lamp box 2 containing a ballast and the like and a lamp body 3 mounting a fluorescent lamp and the like.
And is attached to a ceiling or the like by a pair of pipe legs 4 provided in the lamp box 2. The lamp box 2 and the lamp body 3 are connected by a hinge 5 provided at one end, and the other end is connected and fixed by a connecting screw 6. On the opposite side of the hinge 5, a chain 7 for regulating the inclination angle of the lamp body 3 is provided with the lamp box 2 and the lamp body 3.
Are connected to each other.

On the other hand, the connection screw 6 is a thumb screw in the embodiment. As shown in FIG. 3, the shaft of the connecting screw 6
The soft plastic strip 8 is rotatably and loosely mounted on the soft plastic strip 8.
Is attached by a set screw 9. The connecting screw 6 is formed by an elongated hole 10 formed at the end of the soft plastic strip 8.
And the retaining ring 11 is locked on the back surface.

When attaching or replacing the fluorescent lamp to the lamp body 3, the connecting screw 6 is removed, and the lamp body 3 is tilted clockwise about the hinge 5 as shown in FIG. Since the inclination angle of the lamp body 3 is regulated by the chain 7, the lamp body 3 is located at a position where it is easy to work. Further, since the detached connecting screw 6 is locked to the soft plastic strip 8 fixed to the lamp box 2, there is no risk of being lost, and the lamp box 2 and the lamp body 3 which are performed after the replacement operation of the fluorescent lamp. The connecting operation for connecting the two is reliably performed.

In FIG. 2, two socket holders 21 and 21a each having a cylindrical shape are provided on a mounting plate 20 provided at both ends of the lamp body 3, and these socket holders 21 and 21a are provided.
Reference numeral 21a fits and supports both ends of the cylindrical protective cover 22. The socket holders 21 and 21a are provided with sockets 24 and 24a movably in the axial direction, and lids 26 and 26a are screwed to the respective openings. The lids 26 and 26a are both detachably screwed to each other, but the lid 26 (right side) to which the lamp body 3 is connected by the chain 7 serves as a fluorescent lamp replacement port. 26 and the socket 24 are connected by a connector 27.

On the other hand, the lid 26a on which the hinge 5 is provided
(Left), a spring 28 is mounted between the socket 24a and the lids 26, 26a.
When the fluorescent lamp 23 is tightened, the two sockets 24 and 24a support the fluorescent lamp 23 in a pressed state from both ends by the elasticity of the spring 28.

In the drawing, reference numeral 29 denotes a reflecting plate provided on the mounting plate 20,
Reference numeral 30 denotes a guide surrounding the outside of the protective cover 22.

In this embodiment, two fluorescent lamps are provided in parallel as shown in FIG.
Needless to say, a structure in which only a book is mounted can be adopted.

Next, the structure of the socket holder, the socket connecting member, and the lid will be described. 5 shows the above components, FIG. 6 shows a socket holder, FIG. 7 shows a socket, FIG. 8 shows a connecting member, and FIG. 9 shows a lid.

In FIG. 6, the socket holder 21 is made of hard plastic, and is provided with a ring-shaped partition portion 211 in a cylindrical holder body 210 having both ends opened. Are partitioned into a protective cover storage chamber 212 and the other chamber is partitioned into a socket storage chamber 213. A power supply terminal 215 whose front end faces the socket housing chamber 213 is embedded in the holder main body 210.

In FIG. 7, the socket 24 is made of hard plastic, and the outer diameter of the socket body 240 is large enough to be accommodated in the socket accommodating chamber 213 of the socket holder 21. The socket body 240 is located at the center partition wall 2.
41 divides one chamber into a fluorescent lamp insertion port 242 and the other chamber into a connection terminal insertion port 243. Further, the partition wall 241 is provided with a terminal insertion port 246 for a fluorescent lamp.

In FIG. 7C, reference numeral 40 denotes a connection terminal connected to a terminal of the fluorescent lamp. The connection terminal 40 is bent in a side view U-shape, the upper member 41 is formed in an arc shape in a side view, and the lower member 42 is formed by bending a front end portion of the mounting portion 43 at right angles downward, and further forming the mounting portion 43. It is provided on two contact plates 44 parallel to the lower ends. In the drawing, 45 is a hole formed in the mounting portion 43, and 46 is a set screw. The connection terminal 40 is made to protrude from the socket body 240, and the two contact plates 44 are positioned so as to sandwich the terminal insertion port 246, and the mounting portion 43 is fixed to the center partition wall 241 by a set screw 46. In the figure, reference numeral 249 denotes a pair of screw holes formed facing the opening of the connection terminal insertion port 243 of the socket body 240.

In FIG. 8, a connecting member 25 is made of hard plastic and is used for connecting the socket 40 and the lid 26. The main body 250 of the connecting member 25 has a front shape that matches the shape of the opening of the connection terminal insertion port 243 of the socket 21, and has cuts 251 through which set screws are inserted at both ends of the front face. Cut 2
A pair of engagement recesses 252 are provided adjacent to 51 and are parallel to the vertical direction and face the recesses.

The main body 250 is provided with two leg rods 253 on the opposite side of the surface on which the engaging recess 252 is provided.
The leg 253 is for supporting the contact plate 44 of the connection terminal 40 from the rear when the connecting member 25 is installed in the socket 24. In the drawing, reference numeral 254 denotes a spring receiver provided between the engaging recesses 252, and the left lid 26a in FIG.
And for fixing the spring 28 mounted between them. 255 is a set screw.

In FIG. 9, the lid 26 is made of a hard plastic, and
The cover main body 260 is formed in a bowl shape, and a female screw 261 is formed inside the opening. A connector 27 having a U-shaped cross section is rotatably attached to the center of the surface on which the female screw 261 is formed. In the drawing, reference numeral 262 denotes a fastening square hole formed at the center of the front surface of the lid main body 260.

Referring to FIG. 5, connector 27 is connected to bottom plate 270.
Is rotatably fitted to a shaft portion 263 protruding from the center of the lid main body 260, and is attached by a holding ring 271 so as not to fall off. Each of the U-shaped tips is bent outward to form an engaging edge 272. In the figure, 27
Reference numeral 3 denotes a stopper groove formed in the engaging edge 272, and the opening width of the connecting member 25 has the same length as the length of the engaging recess 252. In addition, one end of the edge of the engaging edge 272 is formed in the radius 274.

The socket holder, the socket, the connecting member, and the lid are structured as described above.
21a is fixed to both ends of the lamp body 3 by a set screw 31 in a pair. The socket holders 21 and 21a are attached with the protective cover storage chamber 212 facing the same. Next, the connecting member 25 is inserted into the opening of the connection terminal insertion port 243 of the socket 24 (right side) by inserting the leg rod 253 into the connection terminal insertion port 243 and fixed with the set screw 255. In addition, leg 2
53 supports the contact plate 44 of the connection terminal 40 from behind.

Next, the connector 2 provided on the lid 26 (right side)
7 is engaged with the engaging recess 252 of the connecting member 25 incorporated in the socket 24. When the engaging edge 272 of the connector 27 is press-fitted into the opposing engaging concave portion 252 from the round portion 274, the opening is slightly narrowed along the round shape of the round portion 274 and smoothly inserted into the engaging concave portion 252. it can. The stopper groove 273 of the engaging edge 272 is
When the number reaches 2, the engaging concave portion 252 and the stopper groove 273 coincide with each other, and the two are joined so as not to fall off.

Thus, the socket 24 and the lid 26 are connected by the connecting member 25 and the connector 27, and the lid 26 is connected to the socket 24 so as to be freely rotatable.

On the other hand, the socket 24a provided on the left side in FIG. 2 is not connected to the lid 26a, and a spring 28 is mounted between the socket 24a and the lid 26a instead. The connection terminals 50 incorporated in the left socket 24a are also different from those on the right, which will be described later.

The sockets 24 and 24a are connected to the socket holder 2
When the lids 26 and 26a are screwed into the sockets 21 and 21a, the socket 24 is positioned at a predetermined position, and the fluorescent lamp 23 is simultaneously mounted on the sockets 24 and 24a. The left and right lids 26, 26a are tightened to ensure tightening.
A tool is fitted into the square hole 262 provided at the center of the front face and tightly fastened.

When replacing the fluorescent lamp 23, the cover 2 must be replaced.
6 (right side), remove the screw connection and cover 26 together with the socket 2
When the fluorescent lamp 4 is pulled out from the socket holder 21, the fluorescent lamp 23 is pulled out from the socket holder 21 while being held by the contact plate 44 of the connection terminal 40. Therefore, a new fluorescent lamp is mounted on the socket 24 in the manner described above, and is again inserted into the socket holder 21 and mounted.

As shown in FIG. 4, these operations are performed in a state where the right side portion of the lamp body 3 is inclined downward about the hinge 5.

Referring to FIG. 10, socket 24 to be incorporated into right socket holder 21 and left socket holder 2
The socket 24a to be incorporated in 1a will be described.

FIG. 10A shows a socket for the right side, and FIG.
0B indicates a left socket. The left side socket 24a and the connecting member 25 have the same structure as the right side socket, but the connection terminals 50 to be mounted on the left side socket 24a.
Although the upper member 51, the lower member 52, and the mounting portion 53 are the same as those for the right side, here, the portion following the mounting portion 53 is different from that for the right side. That is, for the left side, a portion continuous to the mounting portion 53 extends downward and is bent in a U-shape to form a U-shaped bent plate 54, and the free end of the U-shaped bent plate 54 is connected to the terminal insertion port 246. It is located on the back.

Therefore, the terminal 23a of the fluorescent lamp 23 is sandwiched on the right side by the contact plate 44 of the connection terminal 40, but the terminal 23a on the left side is only in contact with the U-shaped bent plate 54 of the connection terminal 50. It is. However, when the fluorescent lamp 23 is mounted as shown in FIG. 2, the left socket 24a receives the elasticity of the spring 28 and the terminal 23a compresses the U-shaped bent plate 54. Does not occur.

[0041]

According to the first aspect of the present invention, since the cover is rotatably connected to the socket, the socket is inserted into the socket holder, and the cover is screwed to the socket holder, so that the socket has a fluorescent light. It can be attached with the lamp attached.

Also, since the socket has a function of holding the terminal of the fluorescent lamp, the fluorescent lamp can be mounted while the terminal of the fluorescent lamp is held between the socket, and when the cover is removed from the socket holder, the socket and the cover together with the cover are used. The fluorescent lamp can be pulled out of the socket holder at the same time.

Also, the second aspect of the present invention is that the connecting screws connecting the lamp box and the lamp body are attached to the soft plastic strip so as not to fall off, so that the connecting screws are lost during the replacement work of the fluorescent lamp. Accident can be prevented.

[Brief description of the drawings]

FIG. 1 shows the entire structure of an explosion-proof fluorescent lamp, where A is a side view and B is a front view.

FIG. 2 is a partially omitted cross-sectional view of an explosion-proof fluorescent lamp assembled.

FIG. 3 is a perspective view of a mounting portion, and FIG.

FIG. 4 is a side view showing a fluorescent lamp replacement operation.

FIG. 5 is a perspective view showing components of a socket holder, a socket, a connecting member, and a lid.

FIG. 6 shows a socket holder, where A is a cross-sectional view and B
Is a partially broken front view.

7A and 7B show a socket, wherein A is a cross-sectional view, B is a front view, and C is a perspective view of a connection terminal.

FIG. 8 shows a connecting member, wherein A is a side view, B is a front view, and C is a cross-sectional view.

FIG. 9 shows a lid, wherein A is a cross-sectional view and B is a front view.

10A is a sectional view and a front view of the right socket, and FIG. 10B is a sectional view and a front view of the left socket.

11A and 11B show a conventional technique, in which A is a cross-sectional view and B is a cross-sectional view taken along the line II in FIG. 10A.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Explosion-proof fluorescent lamp 2 Lamp box 3 Lamp body 4 Pipe leg 5 Hinge 6 Connecting screw 7 Chain 8 Soft plastic strip 9 Set screw 10 Slot 11 Ring ring 20 Mounting plate 21 Socket holder (right) 21a Socket holder (left) 210 Holder main body 211 Partition section 212 Protective cover storage chamber 213 Socket storage chamber 215 Power supply terminal 22 Protective cover 23 Fluorescent lamp 24 Socket (right side) 24a Socket (Left side) 240 Socket main body 241 Partition wall 242 Fluorescent lamp insertion port 243 Connection terminal insertion Port 246 Terminal insertion port 249 Screw hole 25 Connecting member 250 Main body of connecting member 251 Notch 252 Engaging recess 253 Leg rod 254 Spring receiver 255 Set screw 26 Lid (right) 26a Lid (left) 260 Lid main body 261 Female screw 262 Square hole 263 Shaft 27 Connection Connector 270 Connector bottom plate 271 Pressing ring 272 Engagement edge 273 Stopper groove 274 Round portion 28 Spring 29 Reflector 30 Guard 40 Connection terminal 41 Upper member 42 Lower member 43 Mounting portion 44 Contact plate 45 Hole 46 Stop screw 50 Connection terminal 51 Upper member 52 Lower member 53 Mounting part 54 U-shaped bent plate

Claims (6)

[Claims] 1. A cylindrical socket holder (21).
A socket (24) to be inserted into the socket holder (21); and a lid (26) screwed to the socket holder (21). A terminal of a fluorescent lamp is fitted into the socket (24). The engagement means (2
5), the cover (26) is provided with a rotatable connector (27) on a surface provided with a female screw, and the engagement means (25) of the socket (24) is connected to the cover (26). The socket (27) is connected, inserted into the socket holder (21), and the lid (2) is inserted.
An explosion-proof fluorescent lamp device, wherein 6) is placed on the socket holder (21). 2. An engaging means (25) is an engaging recess (252) whose recesses face each other, a connector (27) has a U-shaped cross section, and a bottom plate (270) is attached to a lid (26). And a U-shaped tip is bent outward to form an engaging edge (272), and the engaging edge (272) is Engagement recess (25
The explosion-proof fluorescent lamp device according to claim 1, wherein the socket (24) and the lid (26) are connected by engaging with (2). 3. The engaging edge (272) is provided with an engaging recess (25).
The explosion-proof fluorescent lamp device according to claim 2, wherein a stopper groove (273) having a length corresponding to (2) is formed. 4. The explosion-proof fluorescent lamp according to claim 2, wherein the engaging edge (272) has one of the corners formed at the rounded portion (274). apparatus. 5. A lamp box (2) containing a ballast and the like and a lamp body (3) mounting a fluorescent lamp are connected at one end by a hinge (5) and at the other end. A fluorescent lamp whose part is fixed by a connecting screw (6), said connecting screw (6) being rotatably loosely mounted on a soft plastic band (8), said plastic band (8) being a lamp box; An explosion-proof fluorescent lamp device which is attached to a side plate of a body (2). 6. A cylindrical socket holder (21, 20).
21a) is fixed to both ends of the lamp body with both ends of the protective cover fitted, and one socket holder (21) faces the rear of the terminal insertion port (246) for fitting the terminal of the fluorescent lamp. And a socket (24) having an engaging means (25) provided on the opposite side is connected to the engaging means (25) and the lid (2).
The rotatable connector (27) provided in 6) is inserted in a connected state to cover the lid (26), and the other socket holder (21a) is provided with a spring (28) behind the socket (24a). An explosion-proof fluorescent lamp device which is mounted and covered with a lid (26a).