JPH0765919A - Socket device and display - Google Patents

Abstract

PURPOSE:To provide a socket device and display which can maintain the pinching force solidly even after being installed on a circuit board etc. CONSTITUTION:A display including a socket device and a circuit board 5 on which the socket device S is mounted, is equipped with a cylindrical socket body 1, a lamp 2 fitted in a lamp mount hole 11 at one end of the socket body 1, a flange 12 formed at the periphery of the body 1, and a terminal member 3 made of metal for mounting of the circuit board, and the terminal member 3 is attached to the flange 12, connected with a lead 22 of a lamp 2 led out of the body 1, and has, an approx. channel-shaped part 4 in the frontal elevation. Due to the resilience of this metal terminal member 3 consisting of approx. channel-shaped part 4, the circuit board is mounted while pinched from above and below to ensure that the resilience does not drop secularly, and therefore, sturdy fixing is obtained and a certain electric connection generated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a socket device in which a small incandescent lamp or a capless metal lamp such as a light emitting diode is mounted on a socket body made of an insulating material, and a display device using the socket device.

[0002]

2. Description of the Related Art A conventionally known socket device such as a capless lamp attached to a printed wiring board has a structure as shown in FIG. In the figure, reference numeral 2 is a capless incandescent lamp having a sealing portion 23 called a small wedge shape, and 1 is an upper end of a bottomed cylindrical shape made of a thermoplastic synthetic resin such as 66 nylon (trade name). A socket main body having a mounting hole 11 for the lamp 2, a pair of protrusions 13 formed on the outer peripheral side of the socket main body 1 (protrusions at positions opposite to each other by 180 degrees are not visible), and 12 are the protrusions 1.
3 is a flange portion formed so as to go around the outer circumference at a predetermined interval. 3 is a mounting hole 1 of the socket body 1
The terminal member 4 provided in the terminal 1 protrudes from the holding piece 45 of the crushing sealing portion 23 and the cutout portion of the flange portion 4.
Have six. Further, 5 is a printed wiring board on which a wiring conductor 55 is formed. In this socket device, the holding piece 45 of the terminal member 3 holds the wedge-shaped crushing sealing portion 23 at the end of the lamp 2 and contacts the lead wire 22 of the lamp 2 attached to the surface of the sealing portion 23. Has become. Then, the wiring board 5 is attached so as to press the wiring board 5 between the pair of protrusions 13 formed on the outer peripheral side of the socket body 1 and the flange portion 12, and the terminal portion 46 is connected to the wiring conductor 55 of the wiring board 5. The lamp 2 is configured to be turned on by making contact.

However, in such a socket device, there is no problem as long as the lead wire 22 attached to the crushing sealing portion 23 at the end of the lamp 2 is parallel to the axis of the lamp 2, but the clamping portion 23 holds the sealing portion 23. When the lead wire 22 is bent or bent when it is attached to the terminal, the lead wire 22 may be skewed to the surface of the sealing portion 23 or the like, and it may not be possible to make electrical contact with the holding piece 45 and stable lighting may not be possible. there were.

In addition to the wedge-shaped incandescent lamp described above, there is also a socket device in which a bead glass is used or a lamp in which a glass bulb is directly reduced in diameter and sealed with a lead wire is mounted in a socket body. In this type of socket device, as shown in FIG. 12B, the lead wire 22 led out from the through hole 17 on the bottom surface of the socket body 1 is wound between the cut grooves 16 formed in the flange portion 12 to form the lead wire 22.
Is directly used as the terminal portion 46.

In this socket device, the wiring board 5 is provided between the flange portion 12 and a pair of projections 13 formed on the outer peripheral side of the socket body 1 (the projections at positions opposite to 180 degrees are not visible) as in the above. The lead wire 22 is attached so as to be pressed down and is wound around the flange portion 12.
Is sandwiched between the flange portion 12 and the wiring conductor 55 of the wiring substrate 5, and acts as the terminal portion 46 so that the lamp 2 is turned on.

Such a socket device has an advantage that it does not require a dedicated part as the terminal portion 46 and has a simple structure and is inexpensive, and is widely used for a meter display of an automobile.
However, in the socket device having this configuration, if the lead wire 22 wound around the flange portion 12 is less raised, the contact with the wiring conductor 55 of the wiring board 5 is deteriorated and the number of occurrences is extremely small, but the lamp 2 is not lit. It was stable.

In particular, in a vehicle or the like that transports people or cargo, or in a factory or the like that operates a machine or a plant, many meters are used to display the status, and display problems may occur. Is unforgivable.

[0008]

DISCLOSURE OF THE INVENTION The inventors of the present invention have made various studies in order to solve the instability of the lighting of the lamp as described above, and have improved the mounting portion of the socket device to the wiring board. It was

This is because, as described above, in the conventional socket device, the socket body is made of synthetic resin and is attached to the wiring board through the pair of projections integrally molded with the socket body. However, it was found that the elasticity deteriorates with the lapse of time after the molding, and the contact pressure with the flange portion is weakened to lower the contact performance.

SUMMARY OF THE INVENTION It is an object of the present invention to eliminate the above problems and provide a socket device and a display device capable of maintaining a strong holding force even after being attached to a wiring board or the like.

[0011]

According to a first aspect of the present invention, there is provided a socket device, comprising: a cylindrical socket body made of an insulating material; and a lamp mounted in a lamp mounting hole at one end of the socket body. , A wiring board mounting having a flange portion formed on the outer periphery of the socket body and a substantially U-shaped portion as seen from the front which is connected to the lead wire of the lamp that is engaged with the flange portion and is led out from the socket body And a terminal member made of a metal plate for use.

The socket device according to a second aspect of the present invention is characterized in that the terminal member is provided on the upper surface side of a flange portion formed on the outer periphery of the socket body.

The socket device according to a third aspect of the present invention is characterized in that the terminal member is provided on the lower surface side of a flange portion formed on the outer periphery of the socket body.

A socket device according to a fourth aspect of the present invention is characterized in that the lamp is an incandescent lamp, a discharge lamp or a light emitting diode.

According to a fifth aspect of the present invention, there is provided a display device, wherein the wiring board, the socket device described above in which a U-shaped terminal member is mounted in a socket mounting hole of the wiring board, and the socket device. It is characterized by including a display body that is opposed to the lamp at a distance.

[0016]

Since the mounting of the socket device to the wiring board is made of a metal plate and has a substantially U-shape when viewed from the front, the wiring board is held by the substantially U-shaped portion of the terminal member. The metal terminal member does not deform even after a lapse of time and can maintain its support and electrical contact for a long period of time.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a socket device S of the present invention will be described below with reference to FIGS.

FIG. 1 is a front view of a socket device S mounted on a printed wiring board in a meter of an automobile or the like and used for display and illumination, FIG. 2 is a partially cutaway top view, and FIG. 3 is a bottom view. FIG. 4 is a perspective view of the terminal member, and FIG. 5A is a top view showing a part of the wiring board to which the socket device S is attached.

In the figure, reference numeral 1 designates a bottomed cylindrical socket body made of an insulating material such as synthetic resin, and the upper end side thereof is a sealing portion side (not shown) of an end portion of a bulb 21 of an incandescent lamp 2 having a non-cap-shaped shape. The lamp mounting hole 11 for elastically holding the
On the outer periphery on the lower end side, a projecting large-diameter flange portion 12 and a pair of protrusions 13, 13 are integrally provided with the upper surface of the flange portion 12 at a predetermined distance. Further, the flange portion 12 and the bottom surface 14 are provided with cut grooves 15 and 16, a lead wire 22 insertion hole 17 of the lamp 2, a lead wire 22 guide groove 18 and a cross groove 19.

Reference numeral 3 denotes a terminal member which is formed by bending a metal plate piece having excellent conductivity such as stainless steel into a substantially self-shaped shape when viewed from the front to give elasticity, and has a curved upper plate portion 31 and an upper side plate. Part 32, middle plate part 33, lower side plate part 34, lower plate part 3
5 and a part 36 of the middle plate part 33 which is cut and a tip thereof is directed downward. When viewed from the front, the curved upper plate part 31, the upper side plate part 32, and the middle plate part 33 are substantially formed. The U-shaped portion 4 is formed. The distance t between the upper plate portion 31 and the middle plate portion 33 of the substantially U-shaped portion 4 is set to a value smaller than the plate thickness of the wiring board 5 and elasticity is imparted to each portion. Has become. Further, the upper plate part 31 and the middle plate part 33 may be curved or embossed.

The terminal member 3 has a lower side plate portion 34.
Is inserted into the cut groove 15 of the flange portion 12, and the middle plate portion 3
3, the lower side plate portion 34, the lower plate portion 35 surrounds the flange portion 12 and a part of the middle plate portion 33 is cut and a tip 36 directed downward is formed in a groove formed on the upper surface of the flange portion 12 (not shown). It is locked so that it does not come out when it falls into. At this time, the upper plate portion 31 is in contact with or close to the lower surface of the protrusion 13.

A pair of lead wires 22 extending from the bulb 21 of the incandescent lamp 2 mounted in the lamp mounting hole 11 of the socket body 1 are led out from the insertion holes 17 at the bottom of the body 1. The lead wire 22 passes through the guide groove 18 and is bent at the cut groove 16 to be attached to the upper surface of the flange portion 12.
The intermediate plate portion 33 of the terminal member 3 which is locked to the intermediate plate portion 33 is clamped to electrically connect to the intermediate plate portion 33.

The socket device S having such a structure is mounted in the mounting hole 51 of the wiring board 5 as shown in FIG. 5A, for example. The wiring board 5 is made of an electrically insulative synthetic resin plate, and the mounting hole 51 is hollowed out to have substantially the same shape as the outer shape of the protrusions 13 of the socket body 1 of the socket device S to be mounted, that is, a circular center. Two cuts 53 around the hole 52 at symmetrical positions with respect to the center point of the central hole 52,
There is 54. In the figure, 55 and 56 are wiring conductors.

Socket device S for such a wiring board 5
For mounting, first, the flange portion 12 side of the socket device S is supported, the protrusions 13 and 13 are aligned with the notches 53 and 54 of the mounting hole 51 of the wiring board 5, and the socket device S is pushed in to project the protrusion of the main body 1. Parts 13, 13 and terminal member 3
Passes through the mounting hole 51, and the surface of the flange portion 12 contacts the substrate 5. Then, the socket device S is then rotated clockwise (clockwise). By this rotation, the substantially U-shaped portion 4 formed by the curved upper plate portion 31, upper side plate portion 32, and middle plate portion 33 of the terminal member 3 sandwiches the wiring board 5 from above and below, and the terminal member 3 is wired. When the upper side plate portion 32 comes into contact with the conductors 55 and 56 and the upper side plate portion 32 comes into contact with the square hole 51, the rotation is stopped, whereby the mounting of the socket device S is completed. (Note that this mounting may be performed by inserting and supporting a driver in the cross groove 19 formed on the bottom surface 14 of the flange portion 12.) Further, the protrusion 13 is provided on the upper plate portion 31 of the substantially U-shaped portion 4. The upper plate portion 31 comes into contact with the upper plate portion 31 when the distance t between the intermediate plate portion 33 and the middle plate portion 33 is about to widen, and the elastic force of the upper plate portion 31 is regulated. Absent.

To turn on the lamp 2 of the socket device S, if the power is passed through the wiring conductors 55, 56 of the wiring board 5 by turning on a power switch (not shown), the lamp housed in the socket device S is turned on. The second filament emits light to perform predetermined illumination and display.

To remove the socket device S from the wiring board 5, conversely to the above, grasp the flange portion 12 or insert a driver into the cross groove 19 on the bottom surface 14 of the flange portion 12 and move to the left (counterclockwise). Just rotate and pull.

As described above, in the socket device S, since the wiring board 5 is pinched and mounted from above and below by the terminal member 3 which is made of a metal plate and has a substantially U-shaped portion 4 having elasticity, the elastic force is maintained even after a lapse of time. Does not deteriorate, so that it can be firmly fixed and a reliable electrical connection is made. 6 to 10 show another embodiment of the present invention, in which the same parts as those in FIGS. 1 to 5 are designated by the same reference numerals and the description thereof will be omitted. 6 is a front view of the socket device S, FIG. 7 is a top view, FIG. 8 is a bottom view, and FIG.
Is a side sectional view, and FIG. 10 is a perspective view of a terminal member.

The socket body 1 shown in FIGS.
Is long and the terminal member 3 is arranged on the lower side of the flange portion 12 formed on the main body 1. In this example, the socket device S is mounted from the back side of the wiring board 5 in the above-described embodiment, but from the front side. This is suitable for mounting the socket device S so as not to reduce the brightness of the display part when the distance between the wiring board 5 and the front display plate is wide, or when the socket device S can be mounted only from the front side. .

The socket body 1 of the socket device S of this embodiment has a bulb 21 of an incandescent lamp 2 having a non-cap-shaped metal at the upper end side.
Lamp mounting hole 11 for elastically holding the end of the sealed portion side
However, a partition wall 61 is formed in the center of the intermediate portion, the lead wires 22 extend in the passages 62 on both sides of the partition wall 61, and the lead wire 22 extends outside the main body 1 through a through hole near the lower end of the flange portion 12. Have been derived to. Further, the flange portion 12 has a pair of cut grooves 15, 15 and a cut portion 6 at symmetrical positions on the outer circumference.
3, 63 are formed.

A pair of protrusions 13, 13 are formed at symmetrical positions of the extending portion of the main body 1 below the flange portion 12, and the terminal member 3 is attached to a part of the protrusion portion 13 and the flange portion 12. A recess 64 to be locked is formed. In the figure, 17 is a reinforcing rib of the socket body 1, and 18 is a grip portion when the socket device S is attached.

The terminal member 3 is made of the same metal material as that used in the above embodiment, and is formed by bending it into a substantially self-shape when viewed from the front. In the terminal member 3, the upper side plate portion 32 forms a substantially U-shaped portion 4 with the middle plate portion 33, the lower side plate portion 34, and the lower plate portion 35 in the cut groove 15 of the flange portion 12, and the protrusion 13 is formed. It is mounted and locked in the recess 64. In the terminal member 3, 37 is a pressing piece bent downward from the intermediate plate portion 33, 38 is a connecting piece with the lead wire 22, and 39 is a locking projection.

The assembly of the socket device S is as follows.
First, each part of the terminal member 3 is aligned with the inside of the cut groove 15 of the flange 12 and the entrance of the recess 64 of the protrusion 13 and pushed inward. By this push-in, the middle plate 33
The section 36 bent upward from the above enters into a groove (not shown) formed in the lower surface of the flange portion 12 and is locked so as not to come out. Next, the lamp mounting hole 11
The lamp 2 is mounted inside, the lead wire 22 of the lamp 2 is led out to the outside of the main body 1 through the through hole near the lower end of the flange portion 12, and the lead wire 22 led out is extended from the middle plate portion 33. It is completed by connecting to 38 by means such as welding or brazing. As in the above-described embodiment, the terminal member 3 includes the pressing piece 37 bent downward from the intermediate plate portion 33,
A substantially U-shaped portion 4 is formed by the lower side plate portion 34 and the lower plate portion 35, and the distance t is a plate of the wiring substrate 5 so as to hold the wiring substrate 5 between the pressing piece 37 and the lower plate portion 35. Set a value smaller than the thickness.

To mount the socket device S on the wiring board 5, first, the protrusions 13 and 13 are supported by the grip portion 18 of the main body 1 of the socket device S, and the projections 13 and 13 are cut into the mounting holes 51 of the wiring board 5, respectively. When the socket device S is pushed in according to 54, the protrusions 13 and 13 of the main body 1 and the terminal member 3 pass through the mounting holes 51, and the surface of the flange portion 12 contacts the substrate 5. Then, the socket device S is then rotated clockwise (clockwise). By this rotation, a part of the terminal member 3 is bent to provide elasticity, and a compression piece 37, a lower side plate portion 34,
The substantially U-shaped portion 4 formed by the lower plate portion 35 which is curved and imparts elasticity sandwiches the wiring board 5 from above and below, the terminal member 3 contacts the wiring conductors 55 and 56, and the lower side plate portion 34 is cut. The attachment of the socket device S is completed if the rotation is stopped when it hits the edge portions of 52 and 53.

To turn on the lamp 2 of the socket device S, if a power switch (not shown) is turned on to cause the wiring conductors 55 and 56 of the wiring board 5 to flow, the lamp housed in the socket device S is illuminated. The second filament emits light to perform predetermined illumination and display.

This embodiment is similar to the above embodiment,
The socket device S can be firmly fixed and a reliable electrical connection is made.

The socket device S is used, for example, in the display device shown in FIG. A display board 7 is provided above the wiring board 5 in the figure.
1 is provided with a socket device S1 that does not project so much from the substrate 5, and a portion corresponding to the display portions 72 and 73 is provided with a socket device S2 that projects to the vicinity of the display plate 7, respectively. It is designed to display and light. The socket devices S1 and S2 are attached to and detached from the wiring board 5 from the display board 7 side.

The present invention is not limited to the above embodiment. For example, the lamp installed in the socket body is not limited to incandescent lamps, but can be applied to discharge lamps and light-emitting diode lamps without a base metal.In the case of light-emitting diode lamps, the resistance is housed in the longer socket body. You may stay.

Further, the terminal member is not limited to the bent shape of the embodiment, and particularly, the portion called a substantially U-shaped portion can support the wiring board by strongly pressing the wiring board from above and below with a metal plate, It is only necessary that good electrical connection can be made, and the bent portion and the processed shape of the plate body for that purpose are irrelevant.

Further, the locking projections formed on the outer periphery of the socket body are not limited to those having a pair of symmetrically arranged 180 degrees apart, but may be provided at asymmetrical positions or have different shapes. The arrangement position and the shape may be changed. (FIG. 5B) Such a configuration is suitable when a lamp whose polarity is specified, such as a diode lamp, is used and is not accidentally mounted.

The number of protrusions is not limited to two and may be three or more. Further, the flange portion may be partially broken instead of the entire outer circumference of the holder.

Further, although the mounting hole formed in the wiring board or the like is circular in the above-mentioned embodiment, it is not limited to a circular shape, and it may be a U-shaped hole with a part cut away. Furthermore, the wiring conductor may be formed on either side or both sides of the wiring board.

[0042]

In the socket device S of the present invention, the wiring board is pinched from above and below by the terminal member formed of a metal plate and having a substantially U-shaped portion having elasticity, so that the elastic force is reduced even with the passage of time. Since it does not, it can be firmly fixed and a reliable electrical connection can be made.

[Brief description of drawings]

FIG. 1 is a front view of a socket device showing an embodiment of the present invention.

2 is a partially cutaway top view of FIG. 1. FIG.

FIG. 3 is a bottom view of FIG.

FIG. 4 is a perspective view of the terminal member of FIG.

5A and 5B are top views showing a part of the wiring board to which the socket device is attached.

FIG. 6 is a front view of a socket device showing another embodiment of the present invention.

FIG. 7 is a top view of FIG.

FIG. 8 is a bottom view of FIG.

9 is a side sectional view of FIG.

FIG. 10 is a perspective view of the terminal member of FIG.

FIG. 11 is a front sectional view showing an embodiment of a display device incorporating the socket device of the present invention.

12 (a) and 12 (b) are partially sectional front views showing a conventional socket device.

[Explanation of symbols]

 S, S1, S2: Socket device 1: Socket body 12: Flange portion 13: Projection portion 15, 16: Cut groove 2: Lamp 21: Bulb 22: Lead wire 3: Terminal member 4: Almost U-shaped portion 5: Wiring Substrate 51: Mounting holes 55, 56: Wiring conductor 7: Display board

Claims (5)

[Claims] 1. A cylindrical socket body made of an insulating material, a lamp mounted in a lamp mounting hole at one end of the socket body, a flange portion formed on the outer periphery of the socket body, and the flange portion. And a terminal member made of a metal plate for attaching a wiring board, which has a substantially U-shaped portion when viewed from the front and which is connected to the lead wire of the lamp led out from the socket body, Socket device to do. 2. The socket device according to claim 1, wherein the terminal member is provided on an upper surface side of a flange portion formed on the outer periphery of the socket body. 3. The socket device according to claim 1, wherein the terminal member is provided on a lower surface side of a flange portion formed on the outer periphery of the socket body. 4. The socket device according to claim 1, wherein the lamp is an incandescent lamp, a discharge lamp, or a light emitting diode. 5. The wiring board, the socket device according to claim 1, wherein a U-shaped terminal member is mounted in a socket mounting hole of the wiring board, and a space between the lamp of the socket device and the socket device. And a display unit that is opposed to the display unit.