JPH0338957Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field] This invention relates to a lamp socket applied to an annular lamp.

[Background technology]

Conventionally, a high frequency lighting circuit has been used as a method for lighting annular fluorescent lamps. According to this method, unlike preheating lighting circuits, etc., if the connection between the annular lamp and the lamp socket is incomplete, discharge will start at the connection part and generate high heat, creating a very dangerous situation.

Therefore, a lamp socket B as shown in FIG. 5 has been proposed to ensure reliable connection between the annular lamp and the lamp socket. The lamp socket B includes a lamp pin insertion hole 64 into which the lamp pin 62 of the annular lamp 60 is inserted, and extends from the vicinity of the lamp pin insertion hole 64 to insert the lamp pin 62 of the annular lamp 60 into the lamp socket B.
A socket main body 67 that integrally has a lamp holder part 66 that supports the inside of the outer peripheral surface in the lamp cross section 0, and a tip part 68 that is attached to the lamp holder part 66 and extends from an end part 70 of the lamp holder part 66. The ring-shaped lamp 60
and a lamp holding spring 72 that presses the lamp pin in the direction of the lamp pin insertion hole 64.

According to such a lamp socket B, the lamp pin 62 of the annular lamp 60 is held by the lamp holding spring 72.
Since the lamp pin is pressed in the direction of the lamp pin insertion hole 64, it has good adhesion, and even if the size of the annular lamp 60 is different, the lamp holding spring 72 and the lamp holder part 66 can ensure adhesion. Once installed, it is safe and there will be no contact failure during the process. In this way, poor contact between the lamp pin 62 and the lamp pin insertion hole 64 does not occur, so even in a system using high frequency lighting, there is no need to construct the lamp socket B from a special material with high heat resistance and excellent insulation properties. , it can be manufactured using common inexpensive materials and costs can be reduced.

However, the lamp socket B constructed in this manner also has the following problems.

Since the lamp holding spring 72 is in contact with the lower side of the outer peripheral surface of the annular lamp 60, the annular lamp 60 must be attached or removed from the outside by climbing over the tip 68 of the lamp holding spring 72. It was difficult to replace the annular lamp 60 by reaching out from below the lighting fixture suspended from the lamp.

In addition, in a lighting fixture in which a plurality of annular lamps 60 are arranged one on top of the other, the annular lamps 60 can be viewed from the outside.
According to the method of attaching and detaching the lamp 0, when replacing the annular lamp 60, it was necessary to widen the distance between the adjacent annular lamps by vertically shifting them so that the adjacent annular lamps do not become crowded. For this reason, there was a problem in that the external size of the lighting equipment became large.

Further, the lamp holding spring 72 has a mounting portion 73 thereof.
A hook portion 74 and a claw portion 76 protruding from the socket body 67 are engaged with and attached to both ends of a slit (not shown) formed in the socket body 67, respectively. When engaging the hook portion 74 and the claw portion 76 with the slit, the hook portion 74 is first engaged, and then the lamp holding spring 72 is expanded outward and engaged with the claw portion 76.
It was difficult to attach the lamp holding spring 72. In addition, hook portions 74 and claw portions 7 are provided at both ends of the slit.
6 can prevent the lamp holding spring 72 from shifting in the extending direction of the lamp holder portion 66, but it cannot prevent the annular lamp 60 from shifting in the longitudinal direction.

[Purpose of invention]

The purpose of this invention is to provide a lamp socket in which an annular lamp can be easily replaced, the external size of the lighting fixture can be reduced, and a lamp holding spring can be easily installed without causing displacement. That's true.

[Disclosure of invention]

The lamp socket of this invention has a plurality of lamp pin insertion holes extending diagonally downward from the fixture body into which the lamp pins of the annular lamp are inserted, and extending from the vicinity of the lamp pin insertion holes to cover the inside of the outer peripheral surface of the lamp cross section of the annular lamp. A socket body integrally having a supporting lamp holder portion, and a socket body which is attached to the socket body and whose tip portion faces the lamp holder portion and presses against the outside of the outer circumferential surface of the lamp cross section of the annular lamp, and which is connected to the lamp pin insertion hole. a lamp holding spring for pressing an annular lamp attached to the lamp pin in the direction of the lamp pin insertion hole, the lamp socket having a protrusion protruding from the upper surface of the socket body and hooking onto the tip of the upper surface of the socket body; A groove is formed in the upper surface of the socket main body, facing the hook by sandwiching the protrusion, and a groove is formed in the upper surface of the socket main body, and a claw is provided in a protrusion, and a protrusion is provided in the groove. an insertion hole is formed in the mounting portion through which the projection and the hook can be inserted when the end of the mounting portion of the lamp holding spring is inserted into the groove; A retaining portion that abuts on the side surface facing the claw portion is provided, and a cutout portion into which the protrusion can fit is formed at the end portion.

According to the structure of this invention, since the lamp holding spring is in pressure contact with the outside of the outer peripheral surface of the annular lamp, the annular lamp can be attached and detached from below between the lamp holder part and the lamp holding spring, and the annular lamp can be attached and removed from below. can be easily replaced.

In addition, in lighting fixtures in which multiple ring lamps are arranged one on top of the other, the ring lamps are attached and removed from below, so when replacing ring lamps, adjacent ring lamps do not get crowded and the distance between them can be narrowed. It is possible to reduce the external size of the lighting equipment.

Furthermore, if the end of the mounting part of the lamp holding spring is inserted into the groove with the protrusion and hook part inserted into the insertion hole, the retaining part will come into contact with the side surface of the protrusion, and the mounting part will float. The hook part and the claw part prevent the socket from coming off, and the protrusion part and the claw part prevent it from coming off when it is attached to the socket body. In this manner, when attaching the lamp holding spring, there is no need to take the trouble of expanding the lamp holding spring to the unfolded state as in the conventional case, and the lamp holding spring can be easily attached. Moreover, since the protrusion is provided in the groove formed by the claw and fitted into the notch formed at the end of the attachment part of the lamp holding spring, the lamp holding spring is prevented from shifting in the longitudinal direction of the annular lamp. can be prevented.

Embodiment An embodiment of this invention will be described based on FIGS. 1 and 4. The lamp socket of this embodiment has a main body 36 (third part) as shown in FIG.
A plurality of lamp pin insertion holes 14 extend diagonally downward from the lamp pin 12 in the annular lamp 10 and extend from the vicinity of the lamp pin insertion holes 14 to support the inner side of the outer circumferential surface of the annular lamp 10 in the lamp cross section. a socket main body 18 which integrally has a lamp holder part 16; The lamp socket A is provided with a lamp holding spring 20 that presses the annular lamp 10 mounted in the lamp pin insertion hole 14 in the direction of the lamp pin insertion hole 14, and a projection 28 is projected on the upper surface of the socket body 18. A hook 26 is provided protruding from the tip of the upper surface of the socket main body 18, and an opening is opened in the upper surface of the socket main body 18 in the direction of the hook 26, sandwiching the protrusion 28 and facing the hook 26. A groove 27 is formed to protrude the claw 24, a protrusion 25 is provided within the groove 27, and the end 30a of the mounting portion 30 of the lamp holding spring 20 is inserted into the groove 27. An insertion hole 29 (FIG. 2) is formed in the mounting portion 30 through which the protrusion 28 and the hook portion 26 can be inserted, and a retainer abuts against the side surface 28a of the protrusion 28 facing the front claw portion 24. A notch 33 is provided with a portion 31 (FIG. 2) and further has a cutout portion 33 into which the protrusion 25 can fit into the end portion 30a.
(Fig. 2).

As shown in FIG. 2, the socket body 18 is made of synthetic resin and has an arc-shaped lamp holder portion 16 integrally formed therein, and a support protrusion 22 is extended above the lamp pin insertion hole 14 on the opposite side of the lamp holder portion 16. are doing. The hook portion 26 is fixed to the support protrusion 22 and protrudes from the tip of the support protrusion 22. Further, the claw portion 24 has an L-shaped cross section, and a protrusion 25 is provided on the lower surface of the upper piece 24a.

Further, the lamp holding spring 20 is formed of a leaf spring, and has a stepped bent portion 21 that engages with the end portion 22a of the support protrusion 22, and a slit-shaped insertion hole 29 is formed in the mounting portion 30 along the outer surface of the socket body 18. It is formed. The retaining portion 31 is provided to protrude into the insertion hole 29, and the tip portion 32 of the lamp holding spring 20 is also provided with a slit 32 in order to obtain appropriate elasticity.
a is formed.

The lamp holding spring 20 is attached as follows. The hook portion 26 and the projection portion 28 are inserted into the insertion hole 29, and the end portion 30a of the attachment portion 30 is inserted into the groove portion 27. Then, the tip of the retaining portion 31 comes into contact with the side surface 28a of the projection 28, and the notch 33
The protrusion 25 fits inside. In this way, the lamp holding spring 20 is attached to the socket body 18, but at this time, the tip portion 32 of the lamp holding spring 20 is attached to the first
As shown in the figure, an annular lamp 10 in an inserted state with a lamp pin 12 inserted into a lamp pin insertion hole 14.
The inserted annular lamp 10 is urged in the direction of the lamp pin insertion hole 14 at a position closer to the lamp pin insertion hole 14 as shown by the imaginary line than the pipe diameter. As a result, the lamp pin 1 of the annular lamp 10
2 is inserted into the lamp pin insertion hole 14, and at the same time, the annular lamp 10 is held by the tip portion 32 of the lamp holding spring 20 to prevent it from coming off, and is supported in a tight state.

Further, the lamp socket A is applied to a three-lamp annular lighting fixture 34 as shown in FIG.
8'' and is attached to the instrument body 36.
Further, 38 is a glow lamp, and 40 is a miniature bulb.
The appliance main body 36 is suspended from a ceiling 46 via a cord 42 and a hanging ceiling 44. 4
Reference numeral 8 denotes a lamp holding spring formed of a plate spring provided at a position facing the lamp socket A, and is attached to a screw 54 that connects an upper cover 50 and a lower cover 52 that constitute the appliance body 36. The lamp support spring 48 and the lamp socket A hold the annular lamps 10, 10', 10'' and allow the lamp pin 12 to be inserted into the lamp socket A.

According to the lamp socket A configured in this way, the lamp holding spring 20 is in pressure contact with the outside of the outer circumferential surface of the annular lamp 10, so that the annular lamp 10 has a structure in which the lamp holder part 16 and the tip part 32 of the lamp holding spring 20 are in contact with each other. In between, it can be attached and detached from below. Therefore, the annular lamp 10 can be easily replaced.

In addition, in a three-lamp annular lighting fixture 34 as shown in FIG. 3, the annular lamps 10, 1 are
0', 10'', so the annular lamps 10, 1
0', 10'', the adjacent annular lamp 10,
10', 10'' do not overlap.For this reason, the annular lamps 10 and 10' or the annular lamps 10',
They can be arranged one on top of the other with a space of 10'' between them, and the external shape of the lighting fixture 34 can be reduced.

Further, in the lamp holding spring 20, when the end 30a of the mounting portion 30 is inserted into the groove with the protrusion 28 and the hook portion 26 inserted into the insertion hole 29, the retaining portion 31 is inserted into the side surface of the protrusion 28. 28a,
The attachment part 30 can be attached to the socket main body 18 by preventing it from floating up with the hook part 26 and the claw part 24, and by preventing it from coming off by the protrusion part 28 and the claw part 24. In this manner, when attaching the lamp retaining spring 20, it is possible to easily attach the lamp retaining spring 20 without having to take the trouble of expanding the lamp retaining spring 20 to the unfolded state as in the conventional case. Moreover, a protrusion 25 is provided protrudingly within the groove 27 formed by the claw 24, and the lamp holding spring 2
Notch 3 formed in the end 30a of the mounting portion 30 of 0
3, it is possible to prevent the lamp holding spring 20 from shifting in the longitudinal direction of the annular lamp 10, and the installation becomes stable.

Note that FIG. 4 shows a modification of the lamp holding spring. That is, the insertion hole 29' of this lamp holding spring 20' is formed in the stepped bent part 21' and the hook part 26'.
The hook part insertion hole 29a through which the attachment part 3 is inserted;
0' and a protrusion insertion hole 29b into which the protrusion 28 is inserted. Further, the retaining portion 31' is formed by cutting and bending a part of the mounting portion 30', and the hole formed at the cut and bending mark becomes the protrusion insertion hole 29b.

[Effect of idea]

According to the lamp socket of this invention, the following effects can be obtained.

Since the lamp holding spring is in pressure contact with the outside of the outer peripheral surface of the annular lamp, the annular lamp can be attached and removed from below between the lamp holder and the lamp holding spring, making it easy to replace the annular lamp. .

In lighting fixtures in which multiple ring lamps are arranged one on top of the other, the ring lamps are attached and removed from below, so when replacing ring lamps, adjacent ring lamps do not get in the way and can be spaced apart from each other. , the external size of lighting equipment can be made smaller.

For the lamp holding spring, if the end of the mounting part is inserted into the groove with the protrusion and hook part inserted into the insertion hole, the retaining part will come into contact with the side of the protrusion, preventing the mounting part from floating. It can be attached to the socket body with the hook part and the claw part preventing it from coming off, and the protrusion part and the claw part preventing it from coming off. In this manner, when attaching the lamp holding spring, there is no need to take the trouble of expanding the lamp holding spring to the unfolded state as in the conventional case, and the lamp holding spring can be easily attached. Moreover, since the protrusion is provided in the groove formed by the claw and fitted into the notch formed at the end of the attachment part of the lamp holding spring, the lamp holding spring is prevented from shifting in the longitudinal direction of the annular lamp. can be prevented.

[Brief explanation of drawings]

FIG. 1 is a side view of an embodiment of the invention, FIG. 2 is an exploded perspective view thereof, FIG. 3 is a side view of an annular lighting fixture, and FIG. 4 is a perspective view of a modified example of the lamp holding spring.
FIG. 5 is a side view of the proposed example. A... Lamp socket, 10... Annular lamp,
12... Lamp pin, 14... Lamp pin insertion hole, 16... Lamp holder, 18... Socket body, 20... Lamp holding spring, 24... Claw portion, 2
5...Protrusion, 26...Hook part, 27...Groove, 2
8... Protrusion, 28a... Side, 29... Insertion hole, 30... Mounting part, 30a... End, 31...
Retaining part, 32...Tip part, 33...Notch part, 3
6...The instrument body.

Claims (1)

[Scope of utility model registration request] A plurality of lamp pin insertion holes extending diagonally downward from the fixture body into which lamp pins of the annular lamp are inserted, and a lamp holder portion extending from the vicinity of the lamp pin insertion holes and supporting the inside of the outer circumferential surface of the annular lamp in the lamp cross section. an annular lamp which is attached to the socket main body and whose tip end faces the lamp holder part and presses against the outside of the outer peripheral surface of the lamp cross section of the annular lamp, and which is attached to the lamp pin insertion hole; a lamp holding spring that presses the lamp in the direction of the lamp pin insertion hole, the lamp socket having a protrusion protruding from the upper surface of the socket body and a hook protruding from the tip of the upper surface of the socket body; A groove portion opening toward the hook portion is formed on the upper surface of the socket main body so as to sandwich the protrusion portion and face the hook portion, and a claw portion is provided protrudingly therein, and a protrusion portion is provided within the groove portion to hold the lamp. an insertion hole is formed in the attachment part through which the protrusion and the hook can be inserted when the end of the attachment part of the spring is inserted into the groove, and the side surface of the protrusion faces the claw part; A lamp socket, which is provided with a retaining part that comes into contact with the lamp socket, and further has a cutout part in which the protrusion can fit into the end part.