JPS6348956Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a lighting device having a cylindrical cap with a head, a cylindrical base with a bottom provided with screws, and lighting device parts housed within this base, and in particular, This invention relates to a ring-shaped conductive plate that is brought into contact with lead wires.

Conventionally, this type of lighting device is shown in Fig. 1 and Fig. 2.
As shown in the figure, the lead wires 5 and 8 from the lighting device component 10 are both arranged linearly, and by bending the tips 6 and 7 of the lighting device component 10.
is fixed to an insulating base 2. In addition, the straight part 9 of the lead wire 5 slightly protrudes from the valley of the screw, and the metal screw base 1 shown in FIG.
It contacts the threaded part of No. 2 and maintains continuity. However, in this structure, the flat contact piece 20 provided on the screw base 11 made of synthetic resin as shown in FIG. 11 has drawbacks such as unreliable contact. That is, since fitting into sockets with different structures is limited, there has been a demand for a lighting device that can be fitted into sockets with different structural shapes.

An embodiment of this invention will be described below with reference to FIGS. 6 to 9.

As shown in FIGS. 6 and 7, a ring-shaped conductive wire 16 shown in FIG. 8 or a ring-shaped conductive wire 18 shown in FIG. The lead wire and the ring are brought into contact while being fitted into the groove provided below the screw base 2 in FIG. 7.

The ring-shaped conductive wire 16 or 18 is made of an elastic conductor and is processed to be slightly smaller than the diameter of the groove of the screw base, so the tip of the lead wire 5 and the ring-shaped conductive wire 16 or 18 are They are in contact with each other with pressure. The ring-shaped conductive wire 16 shown in FIG. 8 has a slight seam 17, so if that position comes into contact with the lead wire, the contact will be somewhat unstable. This problem is solved by wrapping the .

Next, FIG. 10 shows the lighting device of this invention inserted into a metal screw base, and conduction of the lead wire 5 from the lighting device component 10 is achieved by the ring-shaped conductive wire 16 or 18 at the tip of the lead wire 5. be done. In the case of a synthetic resin screw base 11 as shown in FIG. 11, a ring-shaped conductive wire 16 or 18 similarly contacts the flat contact piece 20. This flat contact piece 20 is not disposed on the circumference within the socket, but only in one portion, so that reliable contact cannot be obtained unless it is a ring-shaped conducting wire.

To assemble, insert the lead wire 5 from the lighting device part 10 shown in FIG. conductive wire 16 or 1
By fitting 8, contact and fixation can be performed at the same time.

As described above, according to this invention, it is possible to provide a lighting device that can be used with sockets of different configurations and is easy to assemble.

[Brief explanation of the drawing]

1 and 2 are a side view and a sectional view of a conventional lighting device, FIG. 3 is a perspective view of the cap of the device in FIG. 1, and FIG. 4 is a perspective view of the screw base of the device in FIG. Fig. 5 is a sectional view showing the lighting device of Fig. 1 attached to the metal screw base holder, Figs. 6 and 7 are side views and sectional views of the lighting device parts according to this invention, and Fig. 8a. , b is a plan view and side view showing a ring-shaped conductive wire, FIGS. 9 a and b are a plan view and side view showing another ring-shaped conductive wire, and FIG. FIG. 11 is a sectional view showing the lighting device shown in FIG. 6 attached to a synthetic resin screw base flat contact piece. In the figure, 1 is a cap, 2 is a screw base, 5 is a lead wire, 10 is a lighting device component, 12 is a metal screw base receiver, 16 and 18 are ring-shaped conductive wires, 1
7 and 19 are joints and overlapping parts of ring-shaped conductive wires, and 20 is a flat contact piece.

Claims (1)

[Scope of utility model registration request] In a lighting device that has an insulating bottomed cylindrical base with a headed cylindrical cap and screws, and lighting device parts housed within the base, a groove is provided at the bottom of the base and a portion is cut off. an elastic ring-shaped conductive wire having an outer diameter smaller than the diameter of the groove in its natural state is arranged in an exposed state in the groove, and a lead wire of the lighting device component is connected to the ring-shaped conductive wire. A lighting device characterized by: