JPS5813551Y2 - Opening/closing indicator light of the breaker - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improvement in the installation of an on/off indicator light for a circuit breaker.

FIG. 1 is an overall configuration diagram of a breaker 1 showing the installation position of a conventional open/close indicator light, and the open/close indicator light 2 is located outside the operation box 3 (housing the operating mechanism and control parts) of the breaker 1. It is generally installed upwards.

Note that 4 indicates the terminal of the bushing. Here, open/close indicator light 2
A light bulb is a component that often has to be replaced due to its lifespan apart from the breaker inspection cycle. However, according to the above conventional configuration, since it is close to the terminal 4 of the bushing, that is, the live part, when replacing the light bulb, it is necessary to replace the bulb. , it is necessary to be very careful for safety reasons, such as electric shocks caused by collision with fishing tools (screwdrivers, etc.), and since the opening/closing indicator light 2 is diagonal with the operation box 3, the case covering the opening/closing indicator light 2 must be They have a small volume, which results in poor heat dissipation, which shortens the life of the light bulb.

It is also known that a complete set of opening/closing indicator lights, including a glove, is built into the operation box, but in that case, the opening/closing indicator light can only be obtained through the front glass and has the disadvantage that it is limited to one direction.

The present invention has been made to eliminate the above-mentioned drawbacks of the conventional art, and embodiments thereof will be described below with reference to the drawings.

The present invention eliminates the deficiencies of the conventional method by incorporating the open/close indicator light into the operation box.

First, in Figures 2 to 4, 1 is the breaker, 3 is the operation box, 4 is the terminal of the bushing, and 5 is the light bulb (lead wire and installation) supported and stored in the corner of the operation box 3. 6 are a pair of color-coded gloves that receive the light from the light bulb 5 to indicate the open/closed state of the circuit breaker 1, and are fixed so as to protrude from the outer cover plate of the operation box 3.

I is a cover provided to prevent rainwater from directly splashing on the gasket part (not shown) provided between the glove 6 and the operation box 3, and to allow the gloves to be color-coded even when the surroundings are bright, such as on sunny days. be.

It is more effective if the gloves 6 are provided on two sides of the operation box 3, as shown by broken lines in FIGS. 5 and 4, to widen the field of view.

In addition, in the present invention, the light bulb 5 is mounted in the corner of the operation box 3, so it is less affected by vibrations caused by the opening and closing operation of the door of the operation box 3. This, combined with the above-mentioned heat dissipation effect, extends the life of the light bulb. It is possible to keep it.

That is, in this case, if the light bulb is placed at an intermediate position on the surface of the operation box, it will receive large vibrations each time the door of the operation box is opened and closed, and there is a danger that the light bulb will burn out due to this vibration.

Since the present invention has the above-mentioned configuration, it is possible to replace the light bulb safely and easily.Moreover, since the heat capacity of the operation box is small and it is placed in the corner, the life of the light bulb is extended. This device has features such as not requiring a special case, and also has practical effects such as a wider field of view since the glove is provided to protrude from the outer cover plate of the operation box.

[Brief explanation of drawings]

Fig. 1 is an overall configuration diagram of a breaker showing the installation state of a conventional open/close indicator light, Fig. 2 is an overall configuration diagram showing an embodiment of the present invention, and Fig. 3 is an enlarged view of part A in Fig. 2. Figure 4 is I of Figure 3.
FIG. 5, a cross-sectional view taken along the line V-IV, shows another embodiment of the present invention. 1 is a breaker, 3 is an operation box, 4 is a bushing terminal, 5 is a light bulb, 6 is a glove, and 7 is a cover. The reference numerals in the middle of the figure indicate the same or corresponding parts.

Claims (1)

[Scope of utility model registration request] In a breaker equipped with an operation box that is attached to the breaker body and installed near the bushing terminal and houses the operating mechanism and control parts, the breaker's open/close indicator light is supported at a corner of the operation box. An opening/closing indicator light for a circuit breaker, characterized in that the globe of the opening/closing indicator light is installed on both sides of the light mounting corner of the operation box adjacent to each other so as to protrude from the outer cover plate.