JP2001351753A - Clip type lamp socket and luminaire - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a clip-type lamp socket, capable of maintaining a moderate feeling caused by rotation of an attachable straight tube type fluorescent lamp over a long period. SOLUTION: A rotor 6, rotated via a lamp pin of the straight tube type fluorescent lamp, is built in a socket body made of a body 8 and a cover 9. Moderating recessed parts 27 and 28 are formed by every almost 90 deg. on circular ribs 25 on an inside surface of the cover fitted with a rear end part of a cylindrical part 41 of the rotor, and a pair of moderating projecting parts 42 are projected at an almost 180 deg. interval on the outer periphery of the rear end part. These projecting parts 42 are engaged with an disengaged from the moderating recessed parts 27 and 28, and moderation is obtained, every time the rotor turns by almost 90 deg.. Also a pair of front opening slits 44 for allowing insertion- extraction of the lamp pin, a pair of rear opening slits 45 opening on the rear end of the cylindrical part 41 are formed in the cylindrical part, by being dislocated by almost 90 deg. from these slits. The cylindrical part 41 is easily elastically deformed by these rearward opening slits 45, so that abrasion of the projecting parts 42 is restrained.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a clamp-type lamp socket for detachably supporting a straight tube fluorescent lamp.
And a lighting device including the socket.

[0002]

2. Description of the Related Art In a sandwich type lamp socket,
Some lamps have a rotor which is rotated via a lamp pin of the straight tube-type fluorescent lamp supported by the socket as the lamp rotates. The rotor is rotated by approximately 90 ° from a position allowing insertion and removal of the lamp pin, thereby preventing the fluorescent lamp from being accidentally dropped and holding the lamp in a correct mounting position. In a proper mounting state of the lamp, the lamp pin is sandwiched by elastically deformable contact fittings sandwiching the cylindrical portion of the rotor from both radial sides.

[0003] In a lamp socket provided with a rotor, when a straight tube type fluorescent lamp is attached or detached, the lamp is arranged at a proper mounting position and the lamp is arranged at a position where the lamp can be properly inserted and removed. It is desirable to be able to understand this by responding.

[0004] In order to make this point possible, a moderation must be given to the rotation of the rotor. To this end, a circular rib into which the rear end of the cylindrical portion of the rotor is fitted is provided on the inner surface of the socket body, and a moderation recess is formed in the rib at approximately every 90 degrees in the circumferential direction. At the rear end of the portion, a pair of protrusions for moderation are projected from the outer periphery thereof at a distance of approximately 180 °, and these protrusions are engaged and disengaged with the recesses for moderation, so that each time the rotor rotates approximately 90 °. A configuration to obtain moderation has been proposed.

However, although the cylindrical portion is provided with a pair of slits opened at the front end of the cylindrical portion to allow insertion and removal of the lamp pin, the rear end portion rotatably fitted to the circular rib. Has a continuous and continuous configuration in the circumferential direction. Therefore, when the moderating projection is engaged with or disengaged from the moderating concave portion of the circular rib, the rear end portion having the moderating convex is hardly elastically deformed, and the moderating convex is strongly formed in the circular rib. Rubbing around. Therefore, when the straight tube-type fluorescent lamp is attached and detached several times, the moderation convex portion is largely shaved, and thereafter, it becomes difficult to obtain a clear moderation feeling.

In addition, when the lighting device is mounted and the main body of the lighting device is twisted by an external force, the relative position between the straight tube type fluorescent lamp and the sandwiching lamp socket supporting the lamp from both ends is increased. As it changes, a rotating torque is applied to the fluorescent lamp. Therefore, if the entire fluorescent lamp is sometimes rotated with the rotor of the lamp socket due to the rotational torque, the fluorescent lamp may be in a state in which the fluorescent lamp can be dropped. Therefore, in order to further improve the safety of the lighting equipment, it is required to take care to avoid the above-mentioned fear.

[0007]

SUMMARY OF THE INVENTION An object of the present invention is to provide a pinch type lamp socket and a luminaire capable of maintaining a sense of moderation accompanying rotation of a detachable straight tube fluorescent lamp for a long period of time. It is in.

[0008]

In order to solve the above-mentioned problems, the invention according to claim 1 comprises a body having an opening and a pin entrance / exit connected to the opening, a moderation recess or moderation at approximately 90 ° in the circumferential direction. A cover provided with a circular rib having a convex portion corresponding to the opening and provided to cover the back surface of the body; and a socket body formed of the body and the cover, and a rear end portion of the circular body is formed in the circular shape. A cylindrical portion rotatably fitted to the shape rib, a moderating convex portion or a moderating concave portion which is provided at the rear end portion at an interval of approximately 180 ° in the circumferential direction and engages and disengages with the moderating concave portion or the moderating convex portion, A flange portion that is integrally extended radially outward from the front end of the cylindrical portion and is provided so as to close the opening. The flange portion is divided into two and opened to the front end of the cylindrical portion to be provided at the cylindrical portion. A pair that can communicate A front-opening slit, a rotor having a pair of rear-opening slits that are provided in the cylindrical portion at approximately 90 ° apart from these slits and open to the rear end of the cylindrical portion, and the cylindrical portion is moved from both sides in the radial direction. And a resiliently deformable contact fitting which is embedded in the socket body.

The invention of claim 1 can be applied to both a lamp socket for one lamp and a lamp socket for multiple lamps, and the number of rotors and contact fittings corresponding to the application is used. The body, the cover, and the rotor are all formed of a synthetic resin, for example, PBT, PP, or the like. In the invention of claim 1, the connection between the body and the cover is
Claw engagement or screwing, or both may be used in combination, and only one rear opening slit may be provided, and the moderation convex portion or moderation concave portion may be sandwiched. It may be provided in the vicinity of both sides, respectively, or may be provided one by one between the detent protrusions or detent recesses separated by approximately 180 °.

According to the first aspect of the present invention, the moderation concave portion or the moderation convex portion formed at approximately 90 ° in the circular rib on the inner surface of the cover into which the rear end of the cylindrical portion of the rotor is fitted, A pair of moderation protrusions or moderations projecting from the outer periphery of the rear end portion of the rotor rotated through the lamp pins of the straight tube fluorescent lamp while being fitted to the ribs at an interval of approximately 180 °. By the engagement and disengagement of the concave portion, a moderation can be obtained every time the rotor rotates approximately 90 °. In this case, in addition to the pair of front opening slits that allow the insertion and removal of the lamp pin, the rear opening slit that is displaced in the circumferential direction from the slits and opens to the rear end of the cylindrical portion is formed in the cylindrical portion. Therefore, the elastic deformation of the cylindrical portion during the disengagement with a sense of moderation can be easily performed by the rear opening unit, and the amount of deformation of the rear end of the cylindrical portion can be increased. Therefore, with the rotation of the rotor, the detent protrusions do not strongly rub against the circular ribs, and the wear of the detent protrusions is suppressed, so when the mounting and dismounting of the straight tube fluorescent lamp is repeatedly performed. In each case, a clear sense of moderation can be obtained.

In order to solve the same problem, a second aspect of the present invention relates to a body having a pair of openings and a pair of pin entrances and exits which are individually connected to these openings, and a moderation recess or a recess for approximately 90 ° in the circumferential direction. A cover provided to cover the back surface of the body, having a pair of circular ribs each having a moderating convex portion formed corresponding to each of the two openings, and built into a socket body made of the body and the cover; A cylindrical portion whose rear end is rotatably fitted to the circular rib; a convex portion for moderation provided on the rear end portion at an interval of approximately 180 ° in the circumferential direction and engaged with the concave portion for moderation or the convex portion for moderation; Or a moderation concave portion, a flange portion provided so as to radially outwardly protrude from the front end of the cylindrical portion to close the opening, divides the flange portion into two, and opens the front end of the cylindrical portion to the cylindrical portion to form the cylindrical portion. Provided said pin in and out A pair of rotors having a pair of front opening slits that can communicate with the opening, and one or more rear opening slits that are provided in the cylindrical portion at positions shifted in the circumferential direction from these slits and open to the rear end of the cylindrical portion. And an elastically deformable contact fitting built into the socket body with the cylindrical portions of these rotors sandwiched from both sides in the radial direction, and one of the rotors of the pair of rotors The size of the rear opening slit is different from the rear opening slit of the other rotor.

[0012] The pinch-type lamp socket of the present invention comprises:
It is a two-necked lamp socket that supports two straight tube fluorescent lamps. In the present invention, in addition to a pair of front opening slits that allow the insertion and removal of the lamp pin, the positions of the slits in the circumferential direction are different from the cylindrical portions of the rotor that are individually disposed at the portions where the fluorescent lamps are detached. Since the rear opening slit is formed so as to be shifted and opened at the rear end of the cylindrical portion, the rear opening unit engages or disengages the moderation concave portion and the moderation convex portion with a moderation feeling in the same manner as in the first aspect of the present invention. The elastic deformation of the cylindrical portion at the time of engagement and disengagement between the moderating convex portion and the moderating concave portion can be facilitated, and the amount of deformation of the rear end portion of the cylindrical portion can be increased. Therefore, with the rotation of the rotor, the moderating projections are suppressed from being strongly rubbed against the circular ribs and worn, so that even when the straight tube type fluorescent lamp is repeatedly attached and detached, it becomes clear each time. A good sense of moderation can be obtained.

In addition, since the size of the rear opening slit of one of the pair of rotors and the size of the rear opening slit of the other rotor are different, the rear end of the cylindrical portion of the pair of rotors is formed. Is more likely to occur with a smaller rearward opening slit than with a larger rearward opening unit. In this way, the elastic deformation has a difference in strength. Therefore, when the fixture body equipped with the lamp socket of the present invention is twisted, the lamp is rotated at both ends of the straight tube-type lamp according to the difference in strength. The rotation torque for causing the rotation is different. Therefore, the lamp tries to rotate with respect to the lamp socket when the rotational torque is weak, but does not rotate the lamp with respect to the lamp socket when the rotational torque is strong. For this reason, the lamp can only reciprocate in the circumferential direction with respect to the lamp socket having the smaller rotational torque, thereby eliminating the risk of the lamp falling off due to the twist.

According to a third aspect of the present invention, small projections projecting in a direction opposite to a depth direction of the moderation concave portion are provided on both edges of an opening of the moderation concave portion provided corresponding to a position where the lamp pin is inserted / removed. It is characterized by being provided integrally.

According to the present invention, the moderating projection of the rotor is prevented from entering the moderating recess unless the small projection formed on the opening edge of the moderating recess is overcome. When the straight tube type fluorescent lamp is about to come off, the protrusion for moderation of the rotor is hooked on the small projection to prevent further rotation of the lamp and to prevent the lamp from falling off. .

According to a fourth aspect of the present invention, the body and the cover are connected by claw engagement, and the socket body has a main body recess located between the pair of openings, and the recesses face each other. A notch is provided in one of the mutually overlapping walls of the body and the cover forming the concave side wall, and a projection is provided in the other wall,
It is characterized in that these notches and projections are engaged with the projections and depressions. In the present invention, the notch may have a configuration penetrating the wall in which the notch is provided in the thickness direction, or may be formed by a groove that does not penetrate.

The force applied when the straight tube fluorescent lamp is mounted on the lamp socket may tend to widen the gap between the mutually overlapping walls of the main body concave portion of the socket main body. However, in the present invention,
Since the notches and the projections provided on the wall of the cover and the body constituting the side wall overlap with each other at the opposing concave side walls of the main body concave portion, the gap is widened by this engagement. Can be prevented.

According to a fifth aspect of the present invention, the notch is formed by a groove which is shallower than a wall portion provided with the notch.

In the present invention, since the notch is formed as a groove, it is possible to prevent the wall having the notch from being cracked around the notch by the force received when the gap is prevented from spreading. Thus, the function of the concave and convex engagement between the notch and the projection can be achieved.

According to a sixth aspect of the present invention, the mutually overlapping walls of the body and the cover forming the bottom wall of the concave portion of the main body concave portion are connected by nail engagement.

According to the present invention, the mutually overlapping walls of the bottom wall of the concave portion are connected by the claw engagement, so that the claw engagement is securely held regardless of the operation of attaching and detaching the lamp. As a result, the assembly strength of the main body recess and the assembly strength of the socket body can be improved.

According to a seventh aspect of the present invention, there is provided the apparatus according to any one of the first to sixth aspects, wherein the apparatus main body and the straight tube type fluorescent lamp are mounted on both ends of the apparatus main body in the longitudinal direction. And a clamp-type lamp socket.

According to the present invention, the moderation feeling accompanying the rotation of the detachable straight tube type fluorescent lamp can be maintained for a long period of time, or in addition, the overlapping of the body and the cover in the recess of the body of the socket body can be maintained. Since the gap between the wall portions is widened and the lamp socket according to any one of claims 1 to 6 has an effect of preventing the possibility that the claw engagement between the body and the cover is disengaged, a high-quality lighting fixture can be provided.

[0024]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to FIGS.

The two-port sandwich fluorescent lamp socket S according to the present embodiment is provided with a straight tube fluorescent lamp (hereinafter abbreviated as a lamp) L shown in FIG. It is used by being attached to both longitudinal ends (only one end is shown in FIG. 11) of the fixture body 2 made of a steel plate of the lowered lighting fixture 1. In FIG. 11, reference numeral 3 denotes a socket mounting bracket connected to the longitudinal end of the instrument main body 2. A socket mounting hole (not shown) is formed in a socket mounting wall formed of a substantially horizontal lower wall. The lamp socket S is fixedly mounted in this hole. Further, LP in FIG. 11 indicates a pair of substantially parallel lamp pins projecting from the base of the lamp L.

As shown in FIGS. 1 and 2, the lamp socket S includes a socket body 5 made of synthetic resin, a pair of rotors 6 made of the same kind of synthetic resin as the main body 5, and each of the rotors 6. And a pair of contact fittings 7 that are individually combined. The socket body 5 is formed by connecting the body 8 and the cover 9.

As shown in FIGS. 1, 2 and 4 to 7, the body 8 has a front wall 1 having a pair of circular openings 11.
2 and a peripheral wall 13 integrally protruding rearward from the periphery of the wall 12. The body 8 is formed with pin openings 14 which are individually communicated with the openings 11 and open at the lower ends of the front wall 12 and the peripheral wall 13, and the pair of pin openings 14 receive and insert the lamp pins LP of the lamp L. Is done.

The lower portion of the body 8 between the pair of openings 11 forms a main body concave portion 15 which opens downward. Such a recess 1
Providing 5 is advantageous in that the amount of the synthetic resin material forming the socket body 5 can be reduced and the cost can be reduced. Each of the opposed recess side walls 13a of the main body recess 15 has a narrow projection 16 extending in the front-rear direction toward the recess bottom wall 13b which integrally connects them.
Are protruded integrally.

At the center of the upper side of the peripheral wall 13, an electric wire insertion portion 17 is provided.
Are provided integrally, and a plurality of wire insertion holes 18 opening upward are formed in this. At the base of the electric wire insertion part 17, mounting grooves 19 are formed extending in the front-rear direction and open to both side surfaces and front and rear surfaces of the base, and these mounting grooves 19 are formed at the edge of the socket mounting hole (not shown). The lamp socket S is mounted on the socket fitting 3 by sliding and fitting.

The cover 9 provided so as to cover the back surface of the body 8 includes a back wall 21, a peripheral wall 22 protruding forward and integrally from the periphery of the wall 21, and a back cover portion 23 for an electric wire insertion portion. ing. The center of the upper wall portion of the peripheral wall 22 is interrupted corresponding to the wire cover rear cover portion 23. Perimeter wall 2
A pair of cutout grooves 24 are formed at the lower end of the opening 2 and open to the front end. These grooves 24 are provided individually corresponding to the pair of pin ports 14, and communicate with the pin ports 14 so that the lamp pins LP of the lamp L can be inserted and removed.

The inner surface of the back wall 21 has the pair of openings 1
A pair of circular ribs 25 corresponding to 1 and a rotor support shaft 26 located inside the ribs 25 are integrally formed.

As shown in FIG. 2, FIG. 8 (B), FIG. 10, etc., the height of the arc-shaped rib 25 is relatively low, and the inner peripheral surface thereof has
Moderation concave portions 27 and 28 are formed at approximately 90 ° (including 90 °). A pair of moderation recesses 27 which are separated by approximately 180 ° are provided at positions where the lamp pins LP are inserted / removed so as to be vertically opposed to each other, and are separated by approximately 90 ° from each other and separated by approximately 180 ° from each other. Moderation recess 28
Is provided so as to face the position for holding the lamp L in the left-right direction.

A rotor support shaft 26 is provided concentrically with the circular rib 25. 2, 8 (B), 8 (C), 9
As shown in the figures, the rotor support shaft 26 is considerably longer than the protruding height of the circular rib 25, has a slit 29 at its front end, and a stopper edge extending outward at the front end. 30. The slot 29 faces the notch 24 and has a width that allows the lamp pin LP to pass through.

As shown in FIGS. 2 and 4, the peripheral wall 22 has a concave side wall portion 22a forming the main body concave portion 15 together with the concave side wall portion 13a and the concave bottom wall portion 13b, and a concave portion integrally connecting the side wall portions 22a. It has a bottom wall 22b. The concave side wall portion 22a of the peripheral wall 22 is superposed on the inner surface of the concave side wall portion 13a of the body 8, and similarly, the concave bottom wall portion 22b of the peripheral wall 22 is superposed on the inner surface of the concave bottom wall portion 13b of the body 8. A notch 31 formed by a groove shallower than the thickness of the recessed side wall 22b is provided on a surface of the recessed side wall 22a overlapping the recessed side wall 13a. These notches 31 are formed in the concave side wall portions 22.
b, which extends in the front-rear direction and is open to the end face of the wall portion 22b, and engages with the protrusion 16 in an uneven manner.

The connection between the body 8 and the cover 9 is made by hook engagement. In this case, by fitting the peripheral wall 13 of the body 8 which is slightly smaller than the peripheral wall 22 into the inside of the peripheral wall 22 of the cover 9, the engaging claws and the claw receivers respectively provided on the body 8 and the cover 9 are engaged. The assembly is performed together. In addition. 2, 4, 8, 9 and the like,
Denotes a locking claw, and 33 denotes a claw receiver, in particular, the concave bottom walls 13b, 22 of the overlapping concave portions 14 overlapping each other.
The locking claw connecting the b is indicated by reference numeral 32a and the claw receiver is indicated by reference numeral 33a.

As shown in FIG. 3 and the like, the rotor 6 has a cylindrical portion 41 having both open front and rear ends, a pair of moderating convex portions 42,
It has a flange 43, a pair of front opening slits 44, and a pair of rear opening slits 44.

The cylindrical portion 41 has a diameter that can be rotatably fitted to, for example, the inside of the circular rib 25, and a flange portion 43 is formed integrally with the front end portion so as to protrude radially outward. The pair of front opening slits 44 are provided at substantially 180 degrees apart in the circumferential direction of the cylindrical portion 41 and are opened at the front ends of the cylindrical portion 41, respectively. Thereby, the flange portion 43 is divided into two by these slits 44.

On the extension of the front opening slit 44, a moderating convex portion 42 located on the outer peripheral surface of the rear end portion 42 of the cylindrical portion 41 is integrally formed to protrude. Therefore, these projections 42 are also separated by about 180 ° in the circumferential direction. The pair of moderation projections 42 are disengaged from the moderation recesses 27 and 28 with a moderation feeling.

The pair of rear opening slits 45 are formed in the cylindrical portion 41 at positions shifted in the circumferential direction from the front opening slits 44, for example, by approximately 90 ° (including 90 °) in the circumferential direction with respect to the front opening slits 44. Each of the cylindrical portions 41 is open to the rear end. With these slits 45, the semi-cylindrical portion having the front opening slit 44 and the moderation convex portion 42 at the substantially central portion in the circumferential direction can be elastically deformed inward with the flange portion 43 as a fulcrum.

The rotor 6 has a circular rib 25 at its rear end.
And the inner peripheral side of the flange portion 43 is hooked on the stopper edge 30 of the rotor support shaft 26, so that the rotor support shaft can be attached to the inner surface of the cover 9 without falling off the rotor support shaft 26. It is mounted so as to rotate about 26 axis. The rotor support shaft 26 and the rotor 6
This means that there is a gap between the inner peripheral surface of the other cylindrical portion 41 and the outer peripheral surface of the rotor support shaft 26 only because the stopper edge 30 and the flange portion 43 are hooked. The elastic deformation of the semi-cylindrical portion is allowed, and the moderation convex portion 42 can be engaged with and disengaged from the moderation concave portions 27 and 28.

It should be noted that the rotor 6 having the above-described structure can be prepared separately from the socket body 5, but in the present embodiment, a rotor that is formed integrally with the body 8 and then separated is used. ing.

That is, as shown on the left side of the alternate long and short dash line in FIGS.
The body 8 and the rotor 6 are integrally formed in a state where the one edge and the back surface of the flange 43 are integrally connected at a position separated by, for example, 180 ° via a point-like bridge (not shown). ing. After assembling the socket body 5 with the rotor 6 and the respective contact fittings 7 incorporated therein in this molded state, the entire rotor 6 is pressed to cut the bridge portion into the socket body 5. 6B and 7, the rear end of the rotor 6 is fitted into the circular rib 25 as shown on the right side of the dashed line in FIG. 6B and FIG. The lamp socket S is assembled while holding the lamp socket 26 in a loosely fitted state.

By this assembly, the flange portion 43 of the rotor 6 is retracted so as to be substantially flush with the front surface of the body 8 as shown in FIGS. Is done.

Further, in the pair of rotors 6 configured as described above,
In order to add strength to the elastic deformation of the semi-cylindrical portion of one rotor 6 and the other rotor 6, the opening slit 4
5 are different in size. In this case, it is performed by changing at least one of the width and the length of the rear opening slit 45. The larger the rear opening slit 45, the easier the elastic deformation of the semi-cylindrical portion, and conversely, the smaller the rear opening slit 45, the more difficult the elastic deformation of the semi-cylindrical portion. The strength at the time when the convex portion 42 separates from the concave portions 27 and 28 is adjusted.

That is, the moderation strength of one rotor 6 is formed to be larger or smaller than the moderation strength of the other rotor 6. Therefore, the lamp L has one end in the longitudinal direction supported by the rotor 6 having a higher moderation, and the other end in the longitudinal direction supported by the rotor 6 having the lower moderation. In this embodiment, the lamp socket for two lamps is used. However, when the lamp support with the above-mentioned moderation is realized with the lamp socket for one lamp, the rotor of one of the lamp sockets is provided. With a rear opening slit,
What is necessary is just to change the size of the rear opening slit of the rotor provided in the other lamp socket, and these two types of lamp sockets for one lamp are used.

As shown in FIG. 5C, each of the contact fittings 7
Is built in the socket body 5 with the cylindrical portion 41 of the rotor 6 sandwiched from both sides in the radial direction. All of these metal fittings 7 are positioned by ribs and the like provided on the inner surfaces of the body 8 and the cover 9, and the wire connection portions 7 a formed at the upper ends thereof are individually inserted into the respective wire insertion holes 18 of the wire insertion portion 17. They are arranged facing each other. Each electric wire connection portion 7a has a quick connection terminal (not shown), and the core wire of the electric wire inserted into the electric wire insertion hole 18 can be connected in a self-locking manner by the terminal.

Next, the case where the straight tube type fluorescent lamp L is mounted on the lamp socket S having the above-described configuration will be described. First, as shown in FIG. 11, the lamp L is set in a posture in which a pair of lamp pins LP protruding from the base are vertically arranged, and then the lamp L is pushed up so that the notch groove 24 and the pin entrance / exit where the lamp pins LP overlap each other. Insert into 14.

Then, the upper lamp pin LP passes through one of the front opening slits 44 and the slot 29 of the rotor support shaft 26 located at the lower portion of the rotor 6 in order, and is positioned at the upper portion of the rotor 6. The lower lamp pin LP is inserted into the other front opening slit 44 located at the lower part of the rotor 6 through the cutout groove 24 and the pin entrance / exit 14 while being inserted into the other front opening slit 44. In this state, the lamp pins LP are opposed to each other so as to be hooked on the flange 43 of the rotor 6.

Next, the lamp L is rotated about 90 ° about its axis. As a result, the pair of lamp pins LP are displaced by about 90 ° around the rotor support shaft 26 with the rotor 6 by being caught by the rotor 6. In this case, as shown in FIG. 10, the pair of moderating projections 42 of the rotor 6 that are engaged with the pair of moderating recesses 27 at the ramp insertion / removal position in the circular rib 25 are formed as half cylinders of the cylindrical portion 41. The concave portion is disengaged from the detent recesses 27 with inward elastic deformation, and engages with a pair of detent recesses 28 at a lamp holding position separated from these recesses 27 by approximately 90 °. During this engagement, the semi-cylindrical portion of the cylindrical portion 41 elastically deforms outward,
Moderation can be given. Thereby, it can be easily perceived that the lamp L has been properly mounted. By the engagement between the moderation convex portion 42 and the moderation concave portion 28 with the moderation feeling described above, the lamp L rotated by approximately 90 ° as described above is held in an appropriate mounting posture.

In the mounted state of the lamp L, the pair of lamp pins LP contact the corresponding pair of contact fittings 7 and elastically deform the fittings 7 in a direction away from each other. Lamp pin LP is sandwiched between a pair of contact fittings 7 from both sides in the arrangement direction, and the above-mentioned attached state is maintained by the spring force of these fittings 7. In addition, with the rotation of the rotor 6 by approximately 90 °, the flange portion 43 crosses the pin port 14 and prevents the lamp pin PL from passing through the port 14, so that the lamp L mounted as described above can be used. Inadvertent dropping can be prevented.

In order to remove the lamp L, the lamp L is turned down by approximately 90 ° in the reverse order, and the lamp socket S is removed.
You can get it from. In this case, the pair of moderating projections 42 of the rotor 6 that are engaged with the pair of moderating recesses 28 at the lamp holding position in the circular ribs 25 are moved inward of the semi-cylindrical portion of the cylindrical portion 41. The moderation recess 2 with elastic deformation
8 and engages with a pair of moderation recesses 28 which are separated from these recesses 28 by approximately 90 °, and is positioned at the lamp insertion / removal position. Also at this time, the semicylindrical portion of the cylindrical portion 41 is elastically deformed outward, and the moderation convex portion 42 is engaged with the moderation concave portion 28, so that a moderation feeling can be given. Thereby, it can be easily perceived that the lamp L has been rotated to the proper removal position.

When the lamp L is attached / detached in the above procedure,
The detent protrusion 42 slides on the inner peripheral surface of the circular rib 25.
By the way, the cylindrical portion 41 of the rotor 6 has a lamp pin LP
A pair of rear opening slits 45 are formed at the rear end of the cylindrical portion 41 in addition to a pair of front opening slits 44 that allow insertion and removal of the cylindrical portion 41. The elastic deformation of the semi-cylindrical portion having the projection 42 can be facilitated. In other words, the moderation convex portion 42 can easily escape from the circular rib 25 with the rotation of the rotor 6, so that the moderation convex portion 42 does not strongly rub against the circular rib 25, and the early wear is reduced. Is suppressed. Therefore, even when the straight tube-type fluorescent lamp L is repeatedly attached and detached over a long period of use, a clear moderation feeling can be maintained each time.

As described above, the moderation strength of one rotor 6 and the moderation strength of the other rotor 6 of the two-lamp lamp socket S having the above-described configuration are different from each other. Each of the two lamps L whose both ends in the longitudinal direction are supported by S is supported at one longitudinal end thereof via a rotor 6 having a stronger moderation of one lamp socket S, and has the other longitudinal end connected to the other end. The lamp socket S is supported via the weaker rotor 6 of the rotor.

Therefore, even if the fixture body 2 of the suspended lighting fixture 1 is twisted by wind pressure or the like, the straight tube type fluorescent lamp L is prevented from being accidentally dropped as described below. it can. In other words, with the difference in the moderation,
As the rotational torque for rotating the lamp L is different at both ends of the lamp L, the lamp L easily rotates with respect to the lamp socket S when the rotational torque is weak, and the lamp L with respect to the lamp socket S when the rotational torque is strong. L can be prevented from rotating. This means that the rotation of the lamp L due to the twisting is concentrated on the one where the sense of moderation is weak. As a result, the rotation of the lamp L can be prevented in the direction where the sense of moderation is strong.

On the other hand, when the moderation strength of the rotor 6 of the lamp socket S supporting both ends of the lamp L is increased, the rotors of the pair of lamp sockets S are affected by the twist. Although it is difficult to rotate, when the rotor of one lamp socket S is rotated, the rotor of the other lamp socket S is similarly rotated, and as a result, the effect of the twisting causes There is a high possibility that the rotors of the pair of lamp sockets S rotate simultaneously.

However, as described above, by giving a difference in the rotational torque, the one end of the lamp is positively turned in the direction of the weaker rotational torque so as to absorb the influence of the torsion of the appliance body 1. By simply reciprocating one end of L in the circumferential direction with the rotor 6 having the lower rotational torque, the other end of the lamp L can be held by the rotor 6 having the higher rotational torque so as not to rotate. Therefore, based on the twist, the lamp pin LP of the lamp L is inserted into the moderation recess 2 for inserting and removing the pin.
7 can be eliminated. Moreover, such a reliable lamp holding can be obtained by one kind of lamp socket S.

In the lamp socket S, since the body 8 and the cover 9 forming the socket main body 5 are connected to each other by claw engagement, the peripheral walls 13 and 22 overlapping each other.
Some gaps remain between them. Therefore, the lamp L
As described above, the gap may be widened due to the force of mounting by rotating the body by approximately 90 ° as described above. In particular, the concave side wall portions 13 overlapping each other to form the main body concave portion 15
a, 22a, and the bottom wall portions 13b, 22b of the concave portions are apt to widen, and if such a widening occurs, the engagement of the claw may be disengaged.

However, the lamp socket S having the above structure is
The protrusions 16 provided on the side walls 13a, 22a of the concave portions which overlap with each other are provided on the side of the concave bottom walls 13b, 22b.
And the notch 31 are unevenly engaged with each other, so that the engagement prevents the gap between the recessed side walls 13a and 22a from being widened. Moreover, since the notch 31 is formed by a groove that is shallower than the thickness of the recessed side wall portion 22b in which the notch 31 is provided, the recessed side wall portion 22b has the notch 31 regardless of the force received when the gap is prevented from spreading. Cracks can be prevented from occurring at the center. Thereby, the notch 31
The function of preventing the spread of the gap can be fulfilled by the concave and convex engagement between the protrusion and the projection 16.

Accordingly, the locking claw 32a and the claw holder 3 connecting the concave bottom wall 13b of the body 8 and the concave bottom wall 22b of the cover 9 forming the concave bottom wall of the main body concave 15 are formed.
3a can be reliably held. In other words, irrespective of the attachment / detachment operation of the lamp L, the assembling strength of the main body concave portion 15 by the engagement of the claw can be reliably maintained.
The possibility of inadvertent disconnection of the body 8 and the cover 9 by pawl engagement is eliminated, and as a result, the assembly strength of the socket body 5 can be improved.

FIG. 12 shows a second embodiment of the present invention. Since this embodiment is basically the same as the first embodiment, the same components as those of the first embodiment are denoted by the same reference numerals, and the description of the configuration and operation is omitted. The different parts will be described.

In the second embodiment, small projections 27a projecting in the opposite direction to the depth direction of the moderation recess 27 are formed on both edges of the opening of the moderation recess 27 at the pin insertion / removal position. ing. The configuration and operation other than those described above are the same as those of the first embodiment. Therefore, the configuration of the second embodiment can also solve the problems of the present invention.

Moreover, in the second embodiment, the reliability of preventing the lamp from falling can be further improved. That is, by providing the small protrusion 27a, even if the rotor having a smaller rotational torque may rotate due to the twisting of the tool body as described above, for example, The moderating convex portion cannot enter the moderating concave portion 27 unless it climbs over the small projection 27a of the opening of the moderating concave portion 27 at the pin insertion / removal position.

In other words, at the point when the main body of the device is twisted and the straight tube-type fluorescent lamp L is about to come off, the small projection 27a serves as a stopper, and the moderation protrusion of the rotor is hooked on this. , Can hinder further lamp rotation. This prevents the detent protrusion from inadvertently entering the detent recess 27 at the pin insertion / removal position, thereby increasing the reliability of preventing the lamp from falling off. When the lamp is rotated by hand, the moderation convex portion of the rotor can pass over the small protrusion 27a.

FIG. 13 shows a third embodiment of the present invention. Since this embodiment is basically the same as the first embodiment, the same components as those of the first embodiment are denoted by the same reference numerals, and the description of the configuration and operation is omitted. The different parts will be described.

In the third embodiment, the rear end of the cylindrical portion 41 of the rotor 6 is fitted outside the circular rib 25 instead of inside. Then, the pair of moderating projections 42 is connected to the rotor 6.
Projecting integrally inside the substantially semi-cylindrical portion of the cylindrical portion 41 of
The moderation recesses 27 and 28 where these are engaged and disengaged are connected to the circular rib 2.
5 are provided at approximately 90 ° intervals. Moderation recesses 27, 2
Each of the openings 8 is open to the outer peripheral surface of the circular rib 25. The configuration and operation other than those described above are the same as those of the first embodiment. Therefore, the configuration of the second embodiment can also solve the problems of the present invention.

Also in the third embodiment, the second
The small protrusions employed in the embodiment may be provided at both edges of the entrance of the moderation recess 27 at the pin insertion / removal position.

[0067]

The present invention is embodied in the form described above and has the following effects.

According to the first aspect of the present invention, the cylindrical portion of the rotor fitted to the circular rib for moderation is opened to the rear end of the cylindrical portion while being displaced in the circumferential direction from the pair of front opening slits. Since one or more rearward opening slits are formed to facilitate elastic deformation of the cylindrical portion having the moderating convex portion or the moderating concave portion,
The moderation protrusion provided on the circular rib or the cylindrical portion can be prevented from being worn with the attachment and detachment of the straight tube fluorescent lamp,
This makes it possible to provide a pinch-type lamp socket that can maintain a sense of moderation associated with the rotation of the detachable straight tube fluorescent lamp for a long period of time.

According to the second aspect of the present invention, similarly to the first aspect of the invention, in the two-port type sandwiching lamp socket, the wear of the moderating projection caused by the attachment and detachment of the straight tube fluorescent lamp can be effectively reduced. Since it can be suppressed, the sense of moderation accompanying the rotation of the detachable straight tube fluorescent lamp can be maintained for a long period of time. In addition, the size of the rear-opening slit of one of the pair of rotors and the rear-opening slit of the other rotor are made different from each other, so that the appliance body on which the lamp socket of the present invention is mounted is twisted. In this case, since the rotating torque for rotating the lamp is changed at both ends of the straight tube type lamp, the possibility that the entire lamp rotates with respect to the lamp socket in response to the torsion and the lamp falls off is eliminated. it can.

According to the third aspect of the present invention, when the tool main body is twisted and the straight tube-type fluorescent lamp is about to come off, the moderation convex portion of the rotor is hooked on the small projection, and Since the rotation of the lamp can be prevented, the lamp can be dropped.

According to the fourth aspect of the present invention, even if the gap between the mutually overlapping walls of the main body concave portion of the socket main body is increased by the force applied when the straight tube type fluorescent lamp is mounted on the lamp socket. Since the overlapping wall portions of the body and the cover are engaged with the concave and convex portions by the cutouts and the projections, the gap can be prevented from being widened, so that the claw engagement of the socket body is accidentally disengaged. Can be prevented.

According to the fifth aspect of the present invention, when the gap is prevented from being widened, cracks are prevented from being generated in the wall having the notch centered on the notch formed by the groove. The function by the concave-convex engagement between the projection and the projection can be completed.

According to the sixth aspect of the present invention, the claw engagement between the mutually overlapping walls of the bottom wall of the concave portion is surely held irrespective of the attachment / detachment operation of the straight tube type fluorescent lamp, and the claw engagement is achieved by the claw engagement. The strength of assembling the recesses of the main body, and thus the assembling strength of the socket body, can be improved.

According to the seventh aspect of the present invention, the moderation feeling associated with the rotation of the detachable straight tube fluorescent lamp can be maintained for a long period of time, or in addition to this, the overlapping body of the main body concave portion of the socket body can be provided. The lamp socket according to any one of claims 1 to 6, which has an effect that a gap between a wall portion of the cover and the wall portion is widened to prevent a possibility that a claw engagement between the body and the cover may be disengaged. Can be provided.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an entire lamp socket according to a first embodiment of the present invention.

FIG. 2 is an exploded perspective view showing the entire lamp socket of FIG. 1;

FIG. 3A is a perspective view showing a rotor included in the lamp socket of FIG. 1 as viewed from the rear side. FIG. 2B is a perspective view showing a rotor included in the lamp socket of FIG. 1 when viewed from the front side.

FIG. 4 is an exploded perspective view showing the periphery of a main body concave portion of the lamp socket of FIG. 1;

FIG. 5A is a front view showing a body provided in the lamp socket of FIG. 1 together with a rotor. FIG. 5B is a bottom view of the body of FIG. FIG. 5C shows a state in which the contact fitting is assembled.
The back view which shows the body of (A).

FIG. 6A is a cross-sectional view taken along the line ZZ in FIG. 5A.
FIG. 5B shows a state in which the rotor is pushed in, and FIG.
Sectional drawing along the -Z line.

FIG. 7 is a cross-sectional view taken along line YY in FIG.

FIG. 8A is a plan view showing a cover provided in the lamp socket of FIG. 1; (B) is a front view of the cover of FIG. 8 (A).
FIG. 9C is a bottom view of the cover of FIG. The perspective view showing the composition of the quick-set contact fitting concerning a 2nd embodiment of the present invention.

FIG. 9 is a sectional view taken along line XX in FIG. 8 (B).

FIG. 10 is a sectional view showing a moderation imparting portion of the rotor in the lamp socket of FIG. 1;

FIG. 11 is a sectional view showing a state in which the lamp socket of FIG.

FIG. 12 is a front view showing a cover provided in a lamp socket according to a second embodiment of the present invention.

FIG. 13 is a front view showing a lamp socket according to a third embodiment of the present invention in partial cross section.

[Explanation of symbols]

 S: lamp socket L: straight tube type fluorescent lamp LP: lamp pin 1 ... lighting equipment 2 ... equipment body 5 ... socket body 6 ... rotor 7 ... contact fitting 8 ... body 9 ... cover 11 ... opening 12 ... front wall 13a, 22a: recess side wall 13b, 22b: recess bottom wall 14: pin entrance / exit 15: body recess 16: projection 25: circular rib 27: moderation recess at pin insertion / removal position 27a: small projection 28: moderation of lamp holding position Notch 32, 32a Locking claw 33, 33a Claw receiver 41 Cylindrical part 42 Moderation convex part 43 Flange 44 Front opening slit 45 Rear opening slit

Claims (7)

[Claims] 1. A body having an opening and a pin entrance / exit communicating with the opening, and a circular rib having a moderating concave portion or a moderating convex portion formed substantially every 90 ° in a circumferential direction corresponding to the opening. A cover provided to cover the back surface of the body; a cylindrical portion which is built in a socket body formed by the body and the cover and has a rear end rotatably fitted to the circular rib; A moderation protrusion or moderation recess provided and separated from the moderation concave portion or moderation convex portion provided at a direction of approximately 180 ° so as to integrally project radially outward from a front end of the cylindrical portion to close the opening. Flange part provided,
A pair of front-opening slits, which divide the flange portion into two and are opened to the front end of the cylindrical portion and are provided in the cylindrical portion and which can communicate with the pin entrance / exit, are provided in the cylindrical portion with their positions shifted in the circumferential direction from these slits. A rotor having one or more rearward opening slits opened to the rear end of the cylindrical portion; and an elastically deformable contact fitting built in the socket body with the cylindrical portion sandwiched from both sides in the radial direction. A pinch-type lamp socket comprising: 2. A body having a pair of openings and a pair of pin inlets and outlets individually connected to these openings, and a circular rib having a moderating concave portion or a moderating convex portion formed at approximately 90 ° in the circumferential direction. A cover having a pair corresponding to the opening and provided to cover the back surface of the body; a socket body formed of the body and the cover; and a rear end rotatably fitted to the circular rib. A cylindrical portion, a moderating convex portion or a moderating concave portion which is provided at the rear end portion at a distance of approximately 180 ° in the circumferential direction and is engaged with and disengaged from the moderating concave portion or the moderating convex portion, radially outward from a front end of the cylindrical portion. A flange portion which is provided so as to protrude integrally and close the opening,
A pair of front-opening slits, which divide the flange portion into two and are opened to the front end of the cylindrical portion and are provided in the cylindrical portion and which can communicate with the pin entrance / exit, are provided in the cylindrical portion with their positions shifted in the circumferential direction from these slits. A pair of rotors having at least one rear opening slit opened at the rear end of the cylindrical portion, and elastically deformable built in the socket body with the cylindrical portions of these rotors sandwiched from both radial sides thereof. And a rear fitting slit of one of the pair of rotors, and a different size of the rear opening slit of the other rotor. Type lamp socket. 3. A small projection projecting in a direction opposite to a depth direction of the moderation concave portion is integrally provided on both edges of an opening of the moderation concave portion provided corresponding to a position where the lamp pin is inserted / removed. The pinch-type lamp socket according to claim 1 or 2, characterized in that: 4. The socket and the cover are connected by a claw engagement, and the socket body has a main body concave portion located between the pair of openings, and opposing concave side walls of the concave portion. A notch is provided in one of the overlapping wall portions of the body and the cover, and a projection is provided on the other wall portion, so that the notch and the projection are engaged with each other. Claim 2 or Claim 3
2. The pinch-type lamp socket described in 1. 5. The pinched lamp socket according to claim 4, wherein the notch is formed by a groove shallower than a wall portion provided with the notch. 6. The pinch-type lamp socket according to claim 5, wherein the mutually overlapping walls of the body and the cover forming the recess bottom wall of the main body recess are connected by claw engagement. . 7. A clamp-type lamp socket according to any one of claims 1 to 6, wherein the fixture body is attached to both ends in the longitudinal direction of the fixture body to support a straight tube fluorescent lamp. A lighting fixture characterized by comprising: