JPS6114144Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a lighting device, and its purpose is to easily attach a plurality of lamp sockets with their electrodes aligned in polarity.

Generally, the center contact of an incandescent lamp socket is connected to the voltage side and the peripheral socket contact to the ground side, but for lighting fixtures with multiple lamps, it is necessary to connect the electrodes of each lamp socket while paying attention to the polarity. .

The present invention has been made in view of the above points, and will be explained below based on the drawings.

1 to 4 show an embodiment of the present invention, and as shown in FIGS. 1 and 2 are plan views of the main parts,
This is a lighting fixture in which a plurality of lamp sockets 2 are attached to a base 1. The base 1 is a plate made of insulating resin, and grooves 4 for positioning and mounting the terminal board 3 are provided on the front and back surfaces, and the grooves 4 are provided to accommodate either three or four lamp sockets 2. The terminal board 3 is housed in the groove 4 which is adapted as necessary and fixed with driving rivets 5. A mounting seat for the lamp socket is formed on the peripheral end surface, and the ends of terminal plates 3 arranged corresponding to the voltage side and the ground side are bent and positioned on the front and back surfaces, respectively, and mounting screw holes 6 are provided. Between the ends of the terminal plate 3, a convex portion 7 offset with respect to the center line of the mounting screw hole 6 is integrally molded on the base 1. On the other hand, the lamp socket 2 has a main body 8 made of heat-resistant resin and a cylindrical body with a bottom, and a conductive cylindrical receiver 12 with a thread 9 formed around the inside and a notch 10 and a mounting hole 11 on the bottom surface. and a central contact piece 14 that is attached to the notch 10 of the receiver 12 and has one end located in the center of the main body and the other end provided with the mounting hole 13, respectively.
13 is screwed into the mounting screw hole 6 of the above-mentioned mounting seat with the mounting screw 15, and the holder 12 and the central contact piece 14 are screwed into the mounting screw hole 6 of the mounting seat described above.
are electrically connected to each terminal board 3, and the socket itself is also attached to the base 1. At this time, a recess 16 is provided between the two mounting screws 15 on the back surface of the socket main body 8 in correspondence with the aforementioned protrusion 7 of the base, and the recess 16 is positioned by fitting into each other. Result Receipt 1 for each lamp socket 2
2 is connected to the terminal plate 3 on the ground side, and the center contact piece 14 is connected to the terminal plate 3 on the voltage side. In this state, the external power wire is connected to the terminal board 3 attached to the base 1.
Each lamp socket 2 is connected at one point to each lamp socket 2, and power is supplied to each lamp socket 2 via a terminal plate 3 and a mounting screw 15.

As described above, the present invention is provided with positioning unevenness on both the mounting surfaces of the lamp socket and the base, which are offset from the center line of the pair of mounting screw holes and fit into each other to match the polarity of the lamp socket.
The projections and recesses of the lamp socket and the base fit together to position the lamp socket with respect to the terminal plate arranged on the base, and the holder and center contact piece of each lamp socket are the same. The center contact piece is connected to the terminal board so that the center contact piece has the same polarity as the center contact piece, making it difficult to make a connection error.Furthermore, since the unevenness of the lamp socket and the base fit together, the lamp socket and the base are protected against vibrations, etc. The mounting part with the stand becomes stronger.

[Brief explanation of the drawing]

Figures 1 to 4 show embodiments of the present invention. Figure 1 is a plan view of the main parts in the case of three lamps, Figure 2 is a plan view of the same in the case of four lamps, and Figure 3 is a lamp socket. 4 is a plan view, b is a rear view, and FIG. 4 is an exploded perspective view of the attachment portion between the lamp socket and the base. 1...Base, 2...Lamp socket, 3...Terminal board, 6...Mounting screw hole, 7...Protrusion, 12...
Receiver, 14...Central contact piece, 15...Mounting screw,
16... Concavity.

Claims (1)

[Scope of utility model registration request] At least one pair of terminal boards, each having a plurality of mounting screw holes for attaching the lamp socket, which are connected together, correspond to the voltage side and the ground side, respectively, and one pair of the mounting screw holes of each terminal board on the voltage side and the ground side to the lamp socket. The lamp sockets are arranged on the base in an electrically insulated state corresponding to the spacing between the mounting screws, and the mounting screws are screwed into the mounting screw holes of the terminal board to attach the plurality of lamp sockets to the base and connect the terminal board and the electrical connection. In a lighting fixture that is connected to the lamp socket and the base, positioning projections and depressions are provided on both mounting surfaces of the lamp socket and the base, which are offset from the center line of the pair of mounting screw holes and fit together to match the polarity of the lamp socket. Lighting equipment characterized by: