JPS5934985Y2 - capacitor device - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a capacitor device provided with a terminal guard plate for use in a ballast for a discharge lamp.

For example, a composite capacitor generally used in a discharge lamp ballast is a phase advance capacitor, as shown in Figure 1.

An external terminal 2a is connected to a lead wire led out from each of the capacitors through the opening of the case 1 housing the starting capacitor and the noise prevention capacitor.

2 b t 2 c and 2 d are drawn out, and when used by storing them in the same container as the ballast main body, as shown in FIG. 2, the ballast main body 4 is stored in the container 3, A composite capacitor 5 is arranged on the upper part of the ballast main body 4, the two are connected by a suitable connecting wire 6, a compound 7 is filled through the opening of the container 3, and the compound 7 is hardened.

However, in such a case, since the composite capacitor 5 has a lower specific gravity than the compound 7, the composite capacitor 5 will float during the curing process of the compound 7, and there is a risk that the composite capacitor 5 will tilt and the external terminal 2a will come into contact with the inner wall of the container 3. have.

Container 3 is made of metal for various safety reasons.

Therefore, the contact phenomenon was a serious problem.

Due to the use of film for capacitors, which has greatly contributed to the miniaturization of capacitors in recent years, the gap between the composite capacitor 5 and the container 3 within the container 3 is becoming more and more enlarged. The risk of contact between the terminal 3 and the lead terminal 2a is increasing.

The present invention was developed in view of the above points, and by vertically arranging the terminal guard plate at the opening of the capacitor, it is housed in the same container as the ballast body, and when used embedded in a compound, it can be pulled out due to the floating phenomenon. The object of the present invention is to provide a highly safe capacitor device in which the terminals do not come into contact with the inner wall of the container.

An embodiment of the present invention will be described below with reference to the drawings.

That is, as shown in Fig. 3, for example, a phase advancing capacitor,
A terminal guard plate 13 higher than the lead-out terminal 12 connected to the lead wires led out from the various capacitors is vertically disposed at the opening of the resin case 11 housing the starting capacitor and the noise prevention capacitor.

As shown in FIG. 4, the terminal guard plate 13 is composed of a locking part 14 to the open end of the resin case 11, an insertion part 15 into the resin case 11, and a connection wire insertion hole 16, and includes a bake plate, Fiber board, breath board, polypropylene board,
It is made of an insulating material such as polyester board or wood board.

Therefore, the thermosetting resin 1 is removed from the opening of the resin case 11.
7 to form a composite capacitor 18.

The composite capacitor 18 constructed as described above has a ballast main body 2 housed in a metal container 19 as shown in FIG.
It is stored in the upper part of 0 and embedded in the compound 21 for use.

22 is a connection line.

In this case, since the composite capacitor 18 has a smaller specific gravity than the compound 21, the composite capacitor 18 floats and connects the connecting wire 22.
Although it will be pulled in the direction and tilted, the terminal guard plate 13
is set higher than the height of the lead-out terminal 12, so even if the terminal guard plate 13 contacts the inner wall of the metal container 19, the lead-out terminal 12 will not come into contact with it.

The shape of the terminal guard plate is not limited to the above-mentioned embodiment.In short, it is sufficient that the terminal guard plate does not come into contact with the inner wall of the container when the composite capacitor is tilted in the container.For example, as shown in FIG. The terminal guard plate 24 may have a concave portion 23 formed in the portion protruding from the capacitor opening.

In addition, in order to strengthen the fixation of the terminal guard plate,
As shown in B and C, one or more fixing holes or notches 27 are provided in the insertion portion 26 of the terminal guard plate 25, or an eighth
As shown in the figure, the resin case 28 may be provided with a groove 29 for fitting the terminal guard plate.

Although the above embodiments have been explained by exemplifying a composite capacitor, the present invention is not limited to this, and it goes without saying that the present invention can also be applied to a single-function capacitor.

Further, in the above embodiment, the height of the terminal guard plate was limited to that set to be higher than the external terminal, but the height of the terminal guard plate is not necessarily higher than that of the external terminal, but may be the same height or lower.

That is, whether the height of the terminal guard plate should be made higher or lower than the external terminal is determined by the degree of void dust between the capacitor and the container used.

More specifically, it depends on the degree of wobbling within the capacitor container.If there is a lot of wobbling, it is necessary to set the capacitor higher than the external terminal, and conversely, if there is little wobbling, the capacitor can be set lower than the external terminal. The height of the terminal guard plate may be determined as appropriate to prevent external terminals from coming into contact with the terminal guard plate.

As described above, according to the present invention, by vertically arranging the terminal guard plate at the opening of the capacitor, the capacitor is housed in the same container as the ballast body and is embedded in the compound when used in a discharge lamp ballast. It is possible to provide a highly safe capacitor device in which the lead-out terminal does not come into contact with the inner wall of the container even due to the floating phenomenon.

[Brief explanation of drawings]

Figure 1 is a front view showing a conventional composite capacitor, Figure 2 is a side sectional view showing a discharge lamp ballast using the composite capacitor shown in Figure 1, and Figure 3 is a composite capacitor according to an embodiment of the present invention. Fig. 4 is a front view showing a terminal guard plate that constitutes the composite capacitor shown in Fig. 3, and Fig. 5 shows a ballast for a discharge lamp using the composite capacitor shown in Fig. 3. 6 and 7 A, B, and C are front views showing terminal guard plates according to other embodiments of the present invention;
The figure is a perspective view of a case according to another embodiment of the present invention. 11.28...Resin case, 12...
Output terminal. 13.24,25...Terminal guard plate, 18...
...Composite capacitor.

Claims (4)

[Scope of utility model registration request] (1) A case made of synthetic resin, at least one kind of capacitor housed in the case, an external terminal connected to the capacitor, a locking part to the case opening, and an insertion part into the case. A capacitor device comprising: a terminal guard plate disposed perpendicularly to the opening of the case; and a thermosetting resin injected into a gap in the case. (2) The capacitor device according to claim (1), wherein one or more holes or notches are provided in the portion of the terminal card board that is inserted into the case. (3) The capacitor device according to claim (1) or (2) of the utility model registration claim, in which a cut groove for fitting a terminal card plate is provided on the side surface of the case. (4) The capacitor device according to any one of claims (1) to (3) of the utility model registration claim, wherein an insertion hole or a concave portion is provided above the protruding portion of the terminal guard plate.