JP2001118653A - Lamp socket and luminaire - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lamp socket and luminaire which realizes with low cost and high holding ability so that the lamp will not fall off in an abnormal vibration. SOLUTION: Resin-made plural mounting parts 8a-8c which have a contact terminal inside for having a lamp pin for each cap of circular fluorescent lamps 6a-6c plugged in, and lamp holding parts 9a-9c with resin elasticity all together in one piece extended toward one of the circumferential directions against tube cross section of the circular fluorescent lamps 6a-6c are provided, where the distance between each of the lamp holding parts 9a-9c is made smaller than the diameter of the tube cross section of the circular lamp 6a-6c, so that the tap mounted on each of mounting parts 8a-8c is prevented from coming off between the lamp holding parts 9a-9c.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lamp socket and a lighting fixture.

[0002]

2. Description of the Related Art FIG. That is, 50 is an instrument body for three lamps, 51 is a lamp socket, 52 is a lamp support spring, and 53 is a ring-shaped fluorescent lamp of three lamps. In the lamp socket 51, three mounting portions 54 are arranged in the radial direction of the appliance main body 50, a lamp holding portion 55 extends from the center side of the appliance main body 50 of each of the mounting portions 54, and a base holding spring 56 is provided from the opposite side. ing.

[0003]

Conventionally, the base of the ring-shaped fluorescent lamp 53 is sandwiched between the lamp holding part 55 and the base holding spring 56 to support the lamp. In this case, the lamp holding property is excellent, but the base holding spring 56 is separately required, and the assemblability of the lamp socket 51 and the fixture is poor.
There is also a disadvantage that the cost is high.

In normal use, since the lamp pins of the base are held by the plug-in contact terminals of the lamp socket 51, there is no problem in the lamp holding property. It just needs to be kept.

SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a lamp socket and a lighting fixture which can inexpensively realize a lamp holding property in which a lamp does not fall when abnormal vibration is applied.

[0006]

According to a first aspect of the present invention, there is provided a lamp socket comprising a plurality of mounting portions made of resin having contact terminals therein for inserting lamp pins of respective bases of a plurality of annular fluorescent lamps. And a lamp holding portion having resin elasticity integrally extending in one direction in the circumferential direction of the tube cross section of the ring-shaped fluorescent lamp from the portion, and respectively extending in the same direction, and the base to be mounted on each of the plurality of mounting portions is provided. The distance between the lamp holding portions is made smaller than the diameter of the cross section of the tube of the ring-shaped fluorescent lamp so as to prevent the lamp holding portions from coming off from each other.

According to the lamp socket of the first aspect,
Since the lamp base can be held only by the lamp holding portion, the structure can be simplified, the cost can be reduced and the assemblability can be improved.

According to a second aspect of the present invention, in the lamp socket according to the first aspect, the lamp holding portion holds the ring-shaped fluorescent lamp between the lamp holding portions in a state where a lamp pin of the ring-shaped fluorescent lamp is separated from the contact terminal. It has a length to hold.

According to the lamp socket of the second aspect,
In addition to the same effects as those of the first aspect, when an abnormal vibration is applied, the lamp pin is disengaged from the contact terminal and becomes inconsistent, thereby cutting off the energization, thereby improving safety.

[0010] According to a third aspect of the present invention, there is provided a lighting fixture, comprising:
A lamp socket according to claim 1 or 2 provided on one side of the fixture body, and the same number of lamp support springs as the mounting portions provided on the other side of the fixture body.

According to the lighting apparatus of the third aspect, the same effects as those of the first aspect are obtained.

According to a fourth aspect of the present invention, in the third aspect, the mounting portion of the lamp socket and the lamp supporting spring are provided for three lamps.

According to the lighting apparatus of the fourth aspect, the same effects as those of the third aspect are obtained.

According to a fifth aspect of the present invention, in the lighting device according to the fourth aspect, the plurality of mounting portions have a lamp holding portion on a center side of the device main body, and the plurality of mounting portions are located at the most from the center of the device main body. The outer one holds the ring-shaped fluorescent lamp between the lamp holding portion and a spring member provided on the mounting portion facing the lamp holding portion and the lamp holding portion.

According to the lighting apparatus of the fifth aspect, the same effect as that of the fourth aspect is obtained.

According to a sixth aspect of the present invention, in the lighting device according to the fourth aspect, the plurality of mounting portions have a lamp holding portion on a center side of the device main body, and the plurality of mounting portions are located at the most from the center of the device main body. The outer one holds the ring-shaped fluorescent lamp between the lamp holding part and an appliance structural member arranged opposite thereto.

According to the lighting apparatus of the sixth aspect, in addition to the same effect as the fourth aspect, the number of parts can be further reduced.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to FIGS. That is, this lighting fixture has the fixture main body 1, the lamp socket 2, and the lamp support spring 3.

The apparatus main body 1 is of a three-light cord hanging type, in which a cord 4 is connected to an upper end, a partially spherical reflecting plate 5 is provided on a lower surface, and a lighting device such as a lighting device is provided therein. Parts (not shown) are stored. The three ring-shaped fluorescent lamps 6a to 6c used in the device body 1 have different ring diameters,
The diameter of the tube cross section is the same, but may be different if necessary.

The lamp socket 2 is provided on one side of the fixture body 1. That is, a mounting portion (not shown) for electrically and mechanically mounting is provided on a peripheral portion of the reflecting plate 5 of the fixture body 1, and a connecting portion 7 connected to the mounting portion is provided on the lamp socket 2.
Is provided. The lamp socket 2 has a plurality of mounting portions 8a to 8c and lamp holding portions 9a to 9c. The plurality of mounting portions 8a to 8c are made of resin, and have therein contact terminals 13 into which the lamp pins 12 of the respective bases of the plurality of annular fluorescent lamps 6a to 6c are inserted. The plurality of mounting portions 8a
8c are respectively provided at the center side of the appliance body 1 with the lamp holding portions 9
a to 9c, and the outermost mounting portion 8c from the center of the appliance body 1 is provided with a spring member 10 so as to face the lamp holding portion 9c, and as shown in FIG. Is provided on the instrument body 1,
An annular fluorescent lamp 6c is held between both of them and the lamp holding section 9c. However, either one of the spring member 10 and the instrument structural member 11 may be used.

The lamp holding portions 9a to 9c have resin elasticity, and are mounted on the ring-shaped fluorescent lamps 6a to 6c by the mounting portions 8a to 8c.
In the circumferential direction of the cross section of the tube, that is, in the counterclockwise direction and in the same direction. Here, the distance between the lamp holders 9a to 9c is set so as to prevent the bases attached to each of the plurality of holders 8a to 8c from coming off between the adjacent lamp holders 9a to 9c.
c is smaller than the diameter of the cross section of the tube. In particular, the lamp holding portions 9a to 9c have a length for holding the ring-shaped fluorescent lamps 6a to 6c between the lamp holding portions 9a to 9c in a state where the lamp pins 12 of the ring-shaped fluorescent lamps 6a to 6c are separated from the contact terminals 13. In other words, as shown in FIG. 2A, the shortest distance A between the tips of the lamp holding parts 9a and 9b and the lamp holding parts 9b and 9c adjacent to these ends, respectively,
Assuming that the tube diameters of the annular fluorescent lamps 6a and 6b to be mounted on are φd, A <φd. Therefore, during normal use, the lamp pins 12 are held by the plug-in contact terminals 13 so that the lamp base is held. However, when a shock such as vibration is applied, the lamp base 12 is released from the normal holding state. However, the annular fluorescent lamps 6a to 6c are held by the lamp holding portions 9a to 9c due to the above relationship, and the base does not drop. In this case, the lamp pins 12 can be detached from the contact terminals 13 and held in a pointless state by setting the above-described lengths of the lamp holding portions 9a to 9c. However, the lamp holding portions 9a and 9b can be elastically deformed such that A = φd due to resin elasticity. Therefore, as shown in FIG.
The spring portion 3a facing the mounting portion 8a is bent toward the center (the annular center of the ring-shaped fluorescent lamp) of the instrument main body 1 so that the ring-shaped fluorescent lamp 6a can be attached and detached.

The lamp supporting spring 3 is provided on the side of the appliance body 1 opposite to the lamp socket 2. The lamp support spring 3 is a semicircular spring portion 3a which is opposed to the three mounting portions 8a to 8c and is locked on the inner peripheral side of each of the annular fluorescent lamps 6a to 6c.
To 3c, and each base end is attached to the instrument body 1.
Therefore, when the ring-shaped fluorescent lamps 6a to 6c are mounted, first, the spring portions 3a to 3c are engaged with each other and the spring portions 3a to 3c are elastically deformed toward the center side of the instrument body 1 to attach the bases to the mounting portions 8a to 8c.
8c. Conversely, when removing the ring-shaped fluorescent lamps 6a to 6c, the spring portions 3a to 3c are elastically deformed toward the center of the instrument body 1 to remove the base from the mounting portions 8a to 8c, and then the ring-shaped fluorescent lamps 6a to 6c are removed from the spring portions. Remove from 3a-3c.

According to this embodiment, the lamp holding section 9
Since the base can be held only by a to 9c, the structure can be simplified, and the assemblability can be improved at low cost.

The length of the lamp holders 9a to 9c for holding the ring-shaped fluorescent lamps 6a to 6c between the lamp holders 9a to 9c in a state where the lamp pins 12 of the ring-shaped fluorescent lamps 6a to 6c are separated from the contact terminals 13 is set. As a result, when an abnormal vibration is applied, it becomes a point of failure and the energization is cut off, so that the safety is improved.

Further, the plurality of mounting portions 8a to 8c have lamp holding portions 9a to 9c on the center side of the appliance main body 1, and the outermost mounting portion 8c from the center of the appliance main body 1 is the lamp holding portion 9c.
And the annular fluorescent lamps 6a to 6
Since c is maintained, the number of parts can be further reduced.

In the present invention, the lamp holding portion 9
a to 9c are extended clockwise with respect to the mounting portions 8a to 8c, and a spring member is provided for the lamp holding portion of the innermost mounting portion, which is the center side of the device main body, or the device structural member 11 is provided. Alternatively, a structure may be adopted in which a member corresponding to the above is provided to hold the lamp.

[0027]

According to the lamp socket of the first aspect, the lamp base can be held only by the lamp holding portion, so that the structure can be simplified, the cost is reduced, and the assembling property is improved.

According to the lamp socket of the second aspect,
In addition to the same effects as those of the first aspect, when an abnormal vibration is applied, the lamp pin is disengaged from the contact terminal and becomes inconsistent, thereby cutting off the energization, thereby improving safety.

According to the lighting apparatus of the third aspect, the same effect as that of the first aspect is obtained.

According to the lighting apparatus of the fourth aspect, the same effect as that of the third aspect is obtained.

According to the lighting apparatus of the fifth aspect, the same effect as that of the fourth aspect is obtained.

According to the lighting apparatus of the sixth aspect, in addition to the same effect as the fourth aspect, the number of parts can be further reduced.

[Brief description of the drawings]

FIG. 1 is a schematic front view of an embodiment of the present invention.

FIGS. 2A and 2B are enlarged side views of the lamp socket, in which FIG. 2A shows a state in which the lamp is held, and FIG.

FIG. 3 is a front view of the lighting fixture when a lamp is attached and detached.

4A and 4B show a conventional example, in which FIG. 4A is a schematic front view of a lighting fixture, and FIG. 4B is an enlarged side view of a lamp socket thereof.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Instrument main body 2 Lamp socket 3 Lamp support spring 5 Reflector 6a-6c Ring-shaped fluorescent lamp 8a-8c Mounting part 9a-9c Lamp holding part 11 Instrument structural member 12 Lamp pin 13 Contact terminal

Claims (6)

[Claims] 1. A plurality of mounting portions made of resin having a contact terminal therein for inserting a lamp pin of each base of a plurality of ring-shaped fluorescent lamps, and each of these mounting portions is provided in a circumferential direction of a cross section of a tube of the ring-shaped fluorescent lamp. A lamp holding portion having resin elasticity integrally extending in the same direction as one of the plurality of mounting portions, wherein the bases mounted on each of the plurality of mounting portions are prevented from coming off between the adjacent lamp holding portions. A distance between the lamp holding portions is made smaller than a diameter of a cross section of the tube of the ring-shaped fluorescent lamp; 2. The lamp socket according to claim 1, wherein the lamp holding portion has a length for holding the ring-shaped fluorescent lamp between the lamp holding portions in a state where a lamp pin of the ring-shaped fluorescent lamp is separated from the contact terminal. . 3. An apparatus main body, a lamp socket according to claim 1 provided on one side of the apparatus main body, and the same number of lamp support springs provided on the other side of the apparatus main body as the mounting portions. Lighting equipment comprising: 4. The luminaire according to claim 3, wherein said mounting portion of said lamp socket and said lamp supporting spring are provided for three lamps. 5. The apparatus according to claim 5, wherein the plurality of mounting portions have a lamp holding portion on a center side of the fixture main body, and the outermost one of the plurality of mounting portions from the center of the fixture main body is opposed to the lamp holding portion. 5. The ring-shaped fluorescent lamp is held between a spring member provided on the mounting portion and the lamp holding portion.
The lighting fixture as described. 6. The plurality of mounting portions have a lamp holding portion on the center side of the fixture body, and the outermost one of the plurality of mounting portions from the center of the fixture body is opposed to the lamp holding portion. The lighting fixture according to claim 4, wherein the ring-shaped fluorescent lamp is held between the fixture and the fixture structural member.