JP2003187931A - Lamp socket device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent displacement of the receptacle when tension is applied on the cable. <P>SOLUTION: The lamp socket comprises a receptacle 1 that has a lamp pin insertion hole 1a of a ring-shape fluorescent lamp at one end and a cable draw-out hole 1b at the other end and a conductive body is arranged inside, a socket body 2 that is capable of fitting at least the receptacle 1, and a socket cover 3 that is fitted to the socket body 3. A regulators rib 6 for the lead cable 5 from the receptacle 1 is provided at the position in the vicinity of the receptacle 1 of at least one of the socket body 2 or the socket cover 3, and by this regulators rib 6, the lead cable 5 is drawn out linearly in the lead-out direction. Thereby, a force in a slant direction in not applied on the receptacle 1 and inclination of the receptacle 1 is prevented, hence the contact part of the ring- shape fluorescent lamp and the receptacle 1 does not become loose in contact and can be connected steadily. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lamp socket device capable of electrically connecting an annular fluorescent lamp.

[0002]

2. Description of the Related Art Conventionally, the actual construction of Sho 62-23081 (FIG. 8)
As shown in FIG.
The socket main body 54 or the socket cover 5 having a recess 53 into which the plug receiving body 52 having a pair of boss portions 51 on the outer peripheral portion thereof is fitted to the boss portion 51 for supporting the plug receiving body.
In the socket configured such that the plug receiver 52 is loosely fitted in the socket 5, when the tension is applied to the electric wire 50, particularly when the tension stopping mechanism is not provided inside and outside the socket, the plug receiver 5
2 is inclined or displaced in the insertion / extraction direction of the lamp pin 56a of the lamp 56.

[0003]

As described above, the plug receiver 5 is used.
If 2 is displaced, there are the following problems. That is, FIG.
At 0, since the plug receiver 52 protrudes from the reference surface 59 defined by JIS, the lamp base 57 has the lamp support spring 58.
And the fitting is incomplete. In FIG. 11, since the plug receiver 52 is lower than the reference surface 59, the margin of the lamp pin entering the lamp pin contact fitting is small, and loose contact is likely to occur. In FIG. 12, since the plug receiver 52 is inclined, when the lamp is attached or detached, the lamp pin is gnawed,
It is easily damaged and loose contacts.

Further, as shown in FIG. 13, even when there is no tension stopping mechanism inside the socket, the electric wire 50 pulled out from the plug receiver 52 has a sufficient straight portion and is substantially perpendicular from the middle. When it is bent, the plug receiver 52 does not shift or tilt even if a little tension is applied even if there is no rib for stopping the tension. That is, since the dimension A is sufficiently secured, even if a pulling force or a pushing force from the outside of the socket is applied, the tension is not transmitted to the wire lead-out portion 52a of the plug receiver 52. Therefore, the displacement of the plug receiver 52 is unlikely to occur. However, as described above, a space that can sufficiently secure the electric wire straight portion is required, which is a factor that prevents the socket from being made compact.

When the plug receiver is displaced or tilted, the size specified by the JIS standard applied to the socket metal fitting, for example, as shown in FIG.
In some cases, it may deviate greatly from the receiving size of Gu10q size of JIS C7709-2 shown in FIG. In FIG. 14, 60 is a contact, 61 is a holding spring, and 62
Is a reference surface, and the difference between the upper limit value and the lower limit value of d dimension is 0.
It is 3 mm.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a lamp socket device capable of preventing the displacement of the plug receiver when a tension is applied to the electric wire.

[0007]

In order to solve the above-mentioned problems, a lamp socket device according to claim 1 of the present invention has a lamp pin insertion port of an annular fluorescent lamp at one end and a wire drawing port at the other end. A lamp socket device comprising: a plug receiver having a conductor disposed therein; a socket body to which the plug receiver can be attached; and a socket cover attached to the socket body, the socket body or the socket cover At least one of the plug receiving bodies is provided with a straightening rib for the lead-out wire from the plug receiving body, and the lead-out wire is pulled out in a substantially straight line along the lead-out direction by the straightening rib.

In this way, a correction rib for the lead-out wire from the plug receiver is provided at a position near the plug receiver on at least one of the socket body and the socket cover, and the lead-out wire extends along the lead-out direction by the correction rib. Since it is pulled out in a substantially linear shape, a force in an oblique direction is not applied to the plug receiver, and the inclination of the plug receiver can be prevented. As a result, the connecting portion between the annular fluorescent lamp and the plug receiver is unlikely to be a loose contact and can be reliably connected.

Further, by providing the straightening rib near the plug receiver, the straight portion of the socket along the lead-out direction of the lead-out wire can be set small, and the socket becomes compact,
The equipment can be made thinner.

A lamp socket device according to a second aspect is the lamp socket device according to the first aspect, wherein one of the lamp filaments of the annular fluorescent lamp is provided with respect to a lamp base portion provided with a lamp pin to be inserted into a lamp pin insertion port. Is provided only on the side, the plug receiver is mounted in a state of being sandwiched between the socket body and the socket cover, and the engaged portion is provided on the plug receiver, and the plug receiver is provided on at least one of the socket body and the socket cover. The engaging portion and the engaging portion each have an engaging portion that engages with the engaging portion, and the engaged portion and the engaging portion are arranged at positions not facing the lamp filament in a state where the annular fluorescent lamp is electrically connected. did.

As described above, the plug receiver has the engaged portion, and at least one of the socket body and the socket cover has the engaging portion which engages with the engaged portion, and engages with the engaged portion. Since the portion is arranged at a position not facing the lamp filament in a state where the annular fluorescent lamp is electrically connected, it is less likely to be affected by heat generation from the filament when the lamp is turned on. Therefore, when pulling or pushing force is applied to the plug receiver from the lead wire, the degree of thermal softening of the engaging part and the engaged part is lower than when it is provided on the filament side. And depression can be prevented.

A lamp socket device according to a third aspect is the lamp device according to the first or second aspect, wherein the annular fluorescent lamp has a small-diameter light-emitting glass tube and a large-diameter light-emitting glass tube which are concentrically bridge-joined to each other, and a lamp base. It is a double-tube annular fluorescent lamp in which one part is sandwiched between the lamp filament side and the other is the coldest spot side, and a conductor for electrically connecting this double-tube annular fluorescent lamp is received. A lamp support spring is provided that can be pulled out to the outside of the body and can self-hold the annular fluorescent lamp as a holding function, and the socket body and the socket cover are substantially in the socket width direction along the circumferential direction when the annular fluorescent lamp is attached. It is divided into two parts from the center.

As described above, since the annular fluorescent lamp is a double-tube annular fluorescent lamp, the lamp filament can be arranged on only one side of the lamp base,
By arranging the engaging portion and the engaged portion on the side of the coldest spot on the side opposite to the lamp filament side, the same effect as that of the second aspect can be obtained. Further, similarly to the first aspect, since the inclination of the stopper receiver can be prevented and the stopper receiver can be held on the reference surface, the connection between the stopper receiver and the lamp base becomes reliable, and the lamp is surely supported by the lamp support spring. Further, since the socket body and the socket cover are divided into two parts from the substantially central portion in the socket width direction along the circumferential direction of the annular fluorescent lamp, the work of attaching the plug receiver can be facilitated.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described with reference to FIGS. 1 is a sectional view of a lamp socket device according to an embodiment of the present invention, FIG. 2A is a front view of a lamp socket device according to an embodiment of the present invention, and FIG.
Is a bottom view, (c) is a side view, and FIG. 3 is AA of FIG.
FIG.

As shown in FIGS. 1 and 2, a plug receiver 1 having a lamp pin insertion opening 1a of an annular fluorescent lamp at one end and an electric wire extraction opening 1b at the other end, and a conductor disposed therein, at least. A holding function (lamp support spring) that includes a socket body 2 to which the plug receiver 1 can be attached and a socket cover 3 that is attached to the socket body 2 so that an annular fluorescent lamp connected to the plug receiver 1 can be detachably attached 1
1) is provided.

In addition, at least one of the socket body 2 and the socket cover 3 is provided with a plug receiver 1 at a position near the plug receiver 1.
A straightening rib 6 for the lead-out electric wire 5 is provided, and the electric wire lead-out portion 5a of the lead-out electric wire 5 is pulled out in a substantially straight line shape along the lead-out direction by the straightening rib 6.

As shown in FIG. 3 and the like, the socket body 2 and the socket cover 3 are made of a resin such as polypropylene, which is divided into two parts from a substantially central portion in the socket width direction along the circumferential direction when the annular fluorescent lamp is attached. It is a member. The plug receiver 1 is mounted in a state of being sandwiched between the socket body 2 and the socket cover 3. In this case, the socket body 2 is provided with the fitting portion 7 of the plug receiver 1, and at least a pair of the correction ribs 6 are provided in the vicinity of the fitting portion 7 so as to correspond to the electric wire outlet 1b.
Is provided. The straightening rib 6 is wound around the lead-out wire 5 so that the four lead-out wires 5 drawn out from the wire lead-out port 1b of the plug receiver 1 pass through the inside of the socket body 2 to the outside of the socket. Bend to. A corner portion 16 having a substantially right angle is provided at the tip of the correction rib 6 around which the electric wire bent portion 5b is wound, and has a tension relaxing action for the pulling force of the lead-out electric wire 5. Further, one straightening rib 6 located on the side where the lead wire 5 is bent is made shorter than the other straightening rib 6 to secure a space through which the lead wire 5 guided by the other straightening rib 6 passes.

The opening of the socket body 2 as well as the fitting portion 7 is covered with the socket cover 3. The socket cover 3 is fixed to the socket body 2 by a resin caulking convex portion 8 provided on the socket body 2 side. The plug receiver 1 has an engaged portion, and at least one of the socket body 2 and the socket cover 3 has an engaging portion that engages with the engaged portion. In this case, the boss 9 which is an engaging portion with the socket cover 3
And a concave portion 10 which is an engaged portion on the side surface of the plug receiver 1.
Is provided. The engagement between the boss 9 and the recess (hole) 10 has the effect of positioning and retaining the plug receiver 1. In FIG. 1, reference numeral 11 denotes a lamp support spring capable of self-holding an annular fluorescent lamp, which is fitted in the socket body 2. Reference numeral 12 is an electric wire retainer for wire handling, 13 is an electric wire drawing portion, 14 is a tool-side locking rib, and 15 is a tool-side mounting square nut.

The lamp socket device 20 having the above structure is installed in a lighting fixture as shown in FIG. FIG. 4A is a sectional view of a lighting fixture using the lamp socket device according to the embodiment of the present invention, and FIG. 4B is a bottom view.

As shown in FIG. 4, the lamp socket device 20 is installed in the hanging type lighting fixture main body 21 using the fixture-side locking ribs 14 and the fixture-side mounting square nuts 15,
An annular fluorescent lamp 23 is attached using the lamp support spring 11 and another lamp support spring 22 of this lamp socket device. In this annular fluorescent lamp 23, a small-diameter light-emitting glass tube and a large-diameter light-emitting glass tube are concentrically bridge-joined,
This is a double-tube annular fluorescent lamp in which one is on the lamp filament 24 side and the other is on the coldest spot 25 side with the lamp base portion 23a interposed therebetween, and is disclosed in JP-A-8-329891 and 2000-149875. There is. That is, as shown in FIG. 5, in the double-tube annular fluorescent lamp 23, the lamp filaments 24 are arranged in a unified form on either one side of the lamp base portion 23a. The other side becomes the coldest spot 25 and is joined by a bridge 26. Therefore, the temperature distribution near the base portion 23a at the time of lighting becomes higher on the lamp filament 24 side.

On the other hand, when heat is applied to the fitting portion of the boss 9 of the socket cover 3 and the recess 10 of the plug receiver 1 and the mechanical strength is lowered, the gap of the body cover 3 is expanded by the lamp attaching / detaching operation and the insulation performance is lowered. Connect In addition, if the lamp pin holding force is increased due to heat contraction of the socket or the like, the plug receiver 1 may be displaced or may escape.

Therefore, the fitting portion between the boss 9 of the socket cover 3 and the recess 10 of the plug receiver 1 is arranged at a position not facing the lamp filament in a state where the annular fluorescent lamp 23 is electrically connected. Along with this, the heat of the lamp filament 24 is mainly applied to the socket body 2. In FIG. 4, 2
Reference numeral 7 is a shade, 28 is a power cord, and 29 is a power cord storage cover.

Next, the operation of the lamp socket device will be described. FIG. 6 is an explanatory view of the operation of the lamp socket device according to the embodiment of the present invention, and FIG. 7 is an explanatory view of a conventional example for comparison.

As shown in FIG. 6, the direction of the force applied to the plug receiver 1 when a pulling force is applied to the lead wire 5 is the same as the axis of the plug receiver 1. Therefore, a pulling force is applied to the plug receiver 1 and the plug receiver 1 is retracted. Further, since the wire bending portion 5b is wound around the corner portion 16 of the correction rib 6, the wire tension is relieved. B shows the fitting position of the recess 10 of the plug receiver 1 and the boss 9 of the socket cover 3.

On the other hand, in the conventional example, as shown in FIG. 7, the direction of the force applied to the plug receiver 1 when a pulling force is applied to the lead wire 5 is diagonal to the axis of the plug receiver 1. Become. Therefore, the plug receiver 1 is tilted by the rotational force applied at the fitting position B between the recess and the boss as a fulcrum.

As described above, according to this embodiment, since the correction rib 6 is provided so as to be drawn out in a substantially straight shape with respect to the lead wire 5 of the plug receiver 1, the plug receiver 1 is provided in an oblique direction. The force of is not applied, and the inclination of the plug receiver 1 can be prevented. As a result, the connecting portion between the annular fluorescent lamp and the plug receiver is unlikely to be a loose contact and can be reliably connected, and since the plug receiver 1 does not stick out from the JIS standard reference surface, it is completely attached to the lamp support spring 11. .

By providing the correction rib 6 in the vicinity of the wire outlet 1b of the plug receiver 1, the dimension A (FIG. 1) of the straight portion of the socket along the lead-out direction of the lead-out wire 5 can be set small and the socket It becomes compact and the equipment can be made thinner. Further, since the lead-out electric wire 5 is partially wrapped around the corner portion 16 of the straightening rib 6, the tension can be relaxed against the pulling force or the pushing force of the lead-out electric wire 5 (providing a simple tension stopping mechanism).

Further, since the boss 9 that fits into the recess 10 of the plug receiver 1 is provided on the socket cover 3 side, that is, at a position not facing the filament 24, the influence of heat radiation from the filament 24 when the lamp is lit is affected. Hard to wear. Therefore, when a force of pulling or pushing is applied to the plug receiver 1, the degree of thermal softening of the boss 9 is lower than that of the case where it is provided on the filament 24 side, and deformation of the mating recess 10 due to thermal softening,
Since the degree of positional deviation also decreases, it is possible to prevent the stopper receiver 1 from escaping or sinking.

The straightening rib may be provided on the socket cover or on both the socket body and the socket cover. Also, a boss may be provided on the socket cap receiver and a recess may be provided on the socket cover.

[0030]

According to the lamp socket device of the first aspect of the present invention, a correction rib for a lead wire from the plug receiver is provided at a position near at least one of the socket receivers of the socket body and the socket cover. Since the lead-out electric wire is drawn out in a substantially straight line along the lead-out direction by the correction rib, no force is applied to the plug receiver in an oblique direction, and the inclination of the plug receiver can be prevented. As a result, the connecting portion between the annular fluorescent lamp and the plug receiver is unlikely to be a loose contact and can be reliably connected.

Further, by providing the straightening rib near the plug receiver, the straight portion of the socket along the lead-out direction of the lead wire can be set small, and the socket can be made compact.
The equipment can be made thinner.

According to a second aspect of the present invention, the plug receiver has an engaged portion, and at least one of the socket body and the socket cover has an engaging portion that engages with the engaged portion, and is engaged with the engaged portion. Since the joint portion is disposed in a position not facing the lamp filament in a state where the annular fluorescent lamp is electrically connected, it is less likely to be affected by heat generation from the filament when the lamp is turned on. Therefore, when pulling or pushing force is applied to the plug receiver from the lead wire, the degree of thermal softening of the engaging part and the engaged part is lower than when it is provided on the filament side. And depression can be prevented.

In the third aspect, since the annular fluorescent lamp is a double-tube annular fluorescent lamp, the lamp filament can be arranged only on one side of the lamp base, and the lamp filament on the side opposite to the lamp filament side. By disposing the engaging portion and the engaged portion on the coldest spot side, the same operational effect as that of the second aspect can be obtained. Further, similarly to the first aspect, since the inclination of the stopper receiver can be prevented and the stopper receiver can be held on the reference surface, the connection between the stopper receiver and the lamp base becomes reliable, and the lamp is surely supported by the lamp support spring. Further, since the socket body and the socket cover are divided into two parts from the substantially central part in the socket width direction along the circumferential direction in the mounted state of the annular fluorescent lamp, the work of mounting the plug receiver can be facilitated.

[Brief description of drawings]

FIG. 1 is a sectional view of a lamp socket device according to an embodiment of the present invention.

2A is a front view of the lamp socket device according to the embodiment of the present invention, FIG. 2B is a bottom view, and FIG. 2C is a side view.

FIG. 3A is a sectional view taken along line AA of FIG.

FIG. 4A is a sectional view of a lighting fixture using the lamp socket device according to the embodiment of the present invention, and FIG. 4B is a bottom view.

FIG. 5 is an explanatory diagram of a double-tube annular fluorescent lamp.

FIG. 6 is an operation explanatory view of the lamp socket device according to the embodiment of the present invention.

FIG. 7 is an explanatory diagram of a conventional example for comparison.

FIG. 8 is an exploded perspective view of a conventional example.

FIG. 9 is a cross-sectional view of another conventional example.

FIG. 10 is an explanatory diagram showing a problem of the conventional example.

FIG. 11 is an explanatory diagram showing a problem of the conventional example.

FIG. 12 is an explanatory diagram showing a problem of the conventional example.

FIG. 13 is a cross-sectional view showing another problem of the conventional example.

FIG. 14 is an explanatory diagram showing JIS standard stipulated dimensions.

[Explanation of symbols]

1 Plug receiver 1a Lamp pin insertion port 1b Wire outlet 2 socket body 3 socket cover 5 Lead wire 6 Straightening ribs 9 Boss 10 recess 11 Lamp support spring 20 Lamp socket device 23 Ring fluorescent lamp 23a Lamp base 24 filament 25 coldest spot

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Takunobu Sagawa             7-7-6 Yumegaoka, Ueno City, Mie Prefecture Asahi Na             Sional Lighting Co., Ltd. (72) Inventor Tetsuya Matsumoto             7-7-6 Yumegaoka, Ueno City, Mie Prefecture Asahi Na             Sional Lighting Co., Ltd. F-term (reference) 5E021 FA03 FB21 FC02 GA05                 5E024 BB14

Claims (3)

[Claims] 1. A plug receiver having a lamp pin insertion opening of an annular fluorescent lamp at one end and an electric wire drawing opening at the other end, in which an electric conductor is disposed, and a socket body to which the plug receiving body can be attached. A lamp socket device comprising a socket cover attached to the socket body, wherein a rib for straightening a lead wire from the plug receiver is provided at a position near the plug receiver on at least one of the socket body and the socket cover. And a lead-out electric wire is drawn out in a substantially straight line along the lead-out direction by the correction rib. 2. The lamp filament of an annular fluorescent lamp is disposed only on one side of a lamp base portion provided with a lamp pin to be inserted into a lamp pin insertion port, and a plug receiver is sandwiched between a socket body and a socket cover. Mounted on the plug receiver, and the plug receiver has an engaged portion, and at least one of the socket body and the socket cover has an engaging portion that engages with the engaged portion. The lamp socket device according to claim 1, wherein the engaging portion and the engaging portion are arranged at positions not facing the lamp filament in a state where the annular fluorescent lamp is electrically connected. 3. A ring-shaped fluorescent lamp comprises a small-diameter light-emitting glass tube and a large-diameter light-emitting glass tube, which are concentrically bridge-joined, and one of them is unified on the lamp filament side and the other is on the coldest spot side with the lamp base part interposed. It is a double tube type circular fluorescent lamp,
A conductor capable of electrically connecting this double-tube annular fluorescent lamp is drawn out of the plug receiver, and a lamp support spring capable of holding the annular fluorescent lamp by itself is provided as a holding function. 3. The lamp socket device according to claim 1, wherein the annular fluorescent lamp is divided into two parts from a substantially central portion in a socket width direction along a circumferential direction of the annular fluorescent lamp in a mounted state.