JPH0433674Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a pilot lamp using a neon tube with a cap.

<Prior art> This type of pilot lamp
Various proposals have been made, as disclosed in No. 41350.

By the way, this type of pilot lamp is equipped with a base connecting tube inside the container, which is electrically connected to the connecting end by a conductive shaft, and the neon tube is screwed onto the connecting tube, and the electrical connection is secured while the base is connected to the connecting end. It is kept in a container.

In addition, the container has a built-in holder for mounting a columnar resistor such as a Melf-type carbon film resistor or a catalytic resistor, and has a circuit configuration in which one end of the resistor is connected to the cap of the neon tube. Kosho 56
It has become publicly known as disclosed in No.-41350.

<Problems to be solved by the invention> However, in the case of a device having a built-in cap connecting tube or holder, there are disadvantages in that the number of parts increases and the structure becomes complicated.

The object of the present invention is to provide a pilot lamp with a small number of parts and a simple structure.

<Means for solving the problem> In the present invention, a screw hole into which a neon tube with a base is screwed is formed on the inner peripheral surface, and a vertical resistance mounting hole and a central hole for conduction are provided at the bottom. an insulating bottomed cylindrical container body with a transparent cover attached to the upper opening; and a central hole for electrical conduction connected to the lower surface of the container body. an insulating container bottom body; a columnar resistor that is installed in the insertion hole of the container body and whose upper terminal is electrically connected to a core electrode of a neon tube with a cap; a container body and a container bottom body. A conductive shaft that is inserted through the central hole for both conductions, has a neon tube cap electrically connected to its upper end, and has its lower end protruding from the container bottom body as a connection end, and the container body and the container bottom body. The present invention is characterized in that it includes a conductive plate disposed between the rod-shaped resistor and in contact with the lower terminal of the rod-shaped resistor, with a portion thereof protruding outward to serve as a connection end.

<Function> By assembling each part, the center electrode of the neon tube is electrically taken out from the connection end exposed from the lower surface of the bottom of the container via the conductive shaft, and the cap of the neon tube is connected to the resistor. It is electrically taken out from the connecting end of the conductive plate via. Therefore, by connecting an external power source to both of the connection ends, a voltage is applied to the neon tube via the resistor, causing it to light up.

<Example> An example of the present invention will be described with reference to FIGS. 1 and 2.

10 is an insulating container body, the bottom part 11 of which
The side wall 12 has a bottomed cylindrical shape rising from the periphery thereof, and a screw hole 13 into which a known neon tube with a cap 1 is screwed is formed on the lower inner circumferential surface of the side wall 12. . Moreover, a screw 14 for attaching the light-transmitting cover 4 is formed on the outer peripheral surface of the side wall 12. At the center of the bottom 11 of the container body 10, a connection cavity 15 and a conductive central hole 16 communicating with the connection cavity 15 are connected, and the connection cavity 1
5, four resistor mounting through holes 17 are formed at equal angular intervals in the figure. A cylindrical resistor 19 such as a Melf-type carbon film resistor is mounted in the mounting hole 17, and upper and lower connection terminals are exposed above and below the mounting hole 17.

20 is an insulating container bottom body having the same outer diameter as the container body 10, and the container body 10 is located in the center of the insulating container bottom body.
A center hole 23 for conduction is formed which includes a communication hole 21 having the same diameter as the center hole 16 and a large diameter communication hole 22 connected below the communication hole 21 . Further, an outer fitting edge 24 is formed around the upper surface of the container body 10 to fit flush with the lower end of the container body 10, and further, around the communication hole 21, an annular shallow end edge 24 is formed on which a conductive plate 27 is attached. Bottom groove 25
is formed, and a resistor mounting through hole 26 is formed through the peripheral position communicating with the shallow groove 25.
A solid resistor 28 is fitted into the mounting hole 26, and a ring-shaped rod-shaped terminal 29 is placed above the solid resistor 28.
is placed in the shallow groove 25, and the lower rod-shaped terminal 30
is exposed on the bottom surface of the container bottom body 20. Further, a shallow groove 31 is formed in the lower surface of the container bottom body 20, in which a conductive plate 32 electrically connected to the lower connection terminal 30 is disposed.

Container body 10 and container bottom body 2 configured as described above
0 is a small-diameter rod portion 35 that fits the outer fitting edge 24 of the container lower bottom body 20 onto the lower surface of the container body 10 and that is inserted into the center hole 16 and the communication hole 21 from below, and the communication hole 22. After attaching the connecting shaft 34 which is connected to the large-diameter rod portion 36 that fits tightly into the upper end of the small-diameter rod portion 35, and attaching the connecting tongue piece 37 to the upper end of the small-diameter rod portion 35, the top end is caulked 38.
After applying the conductive plate 32 and washer 39 to the shallow groove 31, the connecting screws 40 are screwed together to connect them. In this configuration, the connecting shaft 34 and the connecting screw 40 constitute a conductive shaft 41, and the head of the connecting screw 40 serves as a lead-out end 42, and a lead wire is connected between the conductive plate 32 and the washer 39. be done.

Moreover, between the container body 10 and the container bottom body 20,
A conductive plate 27 is attached, and its upper surface contacts the lower end surface of the resistor 19, and its lower surface connects to the upper connecting ring 29 of the solid resistor 28. Then, a part of the conductive plate 27 protrudes outward from the notch of the outer fitting edge 24 and serves as a pull-out end 43,
It is connected to the lead wire by a screw 44.

After the container body 10 and the container bottom body 20 are connected, the neon tube 1 is screwed into the screw hole 13 of the container body 10, and in the tightened state, the core electrode 2 is connected to the tongue piece 37 in the connection cavity 15. An end portion 3a of the base 3, which is in contact with the resistor 19 and extends from the lower surface thereof, is connected to the upper surface of the resistor 19. Furthermore, a transparent cover 4 is provided on the screw 14.
are screwed on, completing the assembly.

In this configuration, when the translucent cover 4 has a rectangular shape or the like, in order to maintain consistency with the position of the drawer end 43 protruding from the conductive plate 27, it is necessary to The transparent cover 4 may be rotated appropriately.

In this configuration, as shown in FIG. 3, the core electrode 2 of the neon tube 1 is made up of a tongue piece 37 and a conductive shaft 41.
and the base 3 is connected to the connection end 43 of the conductive plate 27 via a resistor 19. A solid resistor 28 is interposed between the conductive plate 27 and the conductive plate 32.

With this circuit configuration, when the connection ends 42 and 43 are connected to the power source, the core electrode 2 and
A voltage is applied to the base 3, and the lamp turns on.
Note that the resistor 19 uses a Melf type carbon film resistor, and therefore the rod-shaped terminals 2 are connected to the upper and lower ends of the resistor 19.
There is an advantage that the rod-shaped terminals such as 9 and 30 are removed and electrical connections can be easily made. On the other hand, Melf-type carbon film resistors have low voltage resistance and will be damaged if excessive voltage is applied. However, the connection ends 42, 4
3 are short-circuited via the solid resistor 28, the excess voltage flows there and is compensated for. That is, the circuit configuration in which the solid resistor 28 is interposed between the connecting ends 42 and 43 functions as a compensation circuit.

Incidentally, when the compensation circuit is not required, there is no need to provide the mounting hole 26 in the container bottom body 20.

<Effects of the Invention> As described above, in the present invention, the screw hole 13 for screwing the cap 3 of the neon tube 1 is directly formed in the container body 10, and the resistor 19 can be fitted therein.

Therefore, there is no need for a cap connection tube or a holder, which were applied to the conventional structure, and the number of parts is reduced, which provides excellent effects such as simplifying the structure.

[Brief explanation of drawings]

The accompanying drawings show an embodiment of the present invention, in which FIG. 1 is a longitudinal sectional side view, FIG. 2 is an exploded perspective view, and FIG. 3 is a circuit diagram. 1... Neon tube, 2... Core electrode, 3... Base,
4... Translucent cover, 10... Container body, 11...
Bottom, 12... Side wall, 13... Screw hole, 16...
Center hole, 17... Mounting through hole, 19... Resistor, 2
0... Container bottom body, 23... Center hole, 26... Mounting hole, 27... Conductive plate, 28... Solid resistor, 32... Conductive plate, 34... Connection shaft, 37...
Tongue piece, 41... conductive shaft, 42, 43... connection end.

Claims (1)

[Claims for Utility Model Registration] A screw hole into which a neon tube with a cap is screwed is formed on the inner peripheral surface, and a vertical resistance mounting hole and a central hole for conduction are formed on the bottom. An insulating bottomed cylindrical container body having an opening covered with a light-transmitting cover; and an insulating bottom bottom body connected to the lower surface of the container body and having a central hole for conduction formed therein. a columnar resistor that is installed in the insertion hole of the container body and whose upper terminal is electrically connected to the core electrode of the neon tube with a cap; and a conductive center between the container body and the bottom of the container. a conductive shaft that is inserted through the hole, has a cap of a neon tube electrically connected to its upper end, and has a lower end protruding from the bottom body of the container as a connection end; A pilot lamp comprising: a conductive plate that is in contact with the lower terminal of the rod-shaped resistor and has a part thereof protruding outward to serve as a connection end.