Converter

Abstract

A converter includes an amplifier case main body having an amplifier main body accommodated therein, and a safety cover attached to the amplifier case main body. The safety cover has a plurality of through-holes for as removal.

Claims

1. A converter comprising: an amplifier case main body having an amplifier main body accommodated therein; an indicator; and a safety cover attached to the amplifier case main body, wherein the safety cover has a plurality of through-holes for gas removal, the plurality of through-holes are circumferentially provided along an outer periphery of a main plane of the safety cover at an area in which the indicator is not attached, so as to surround the indicator, and an area of the main plane of the safety cover in which the indicator is attached is not provided with any through-hole.

2. The converter according to claim 1, wherein the through-holes for gas removal are provided in a mesh structure on a main plane of the safety cover.

3. The converter according to claim 2, wherein the through-holes in the mesh structure can comprise at least one shape of a triangle, a quadrangle, and a pentagon.

4. A converter comprising, an amplifier case main body having an amplifier main body accommodated therein; an indicator; and a safety cover attached to the amplifier case main body, wherein the safety cover has plurality of through-holes for gas removal, the plurality of through-holes circumferentially surrounding the indicator, an inner diameter of each of the through-holes for gas removal being smaller than an outer diameter of a predetermined test pin such that the predetermined test pin cannot be fitted into the through-holes.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) FIG. 1 illustrates a configuration of main parts of an exemplary embodiment of the present invention.

(2) FIG. 2 is a plan view illustrating a main plane 21 of a safety cover 2.

(3) FIG. 3 illustrates a configuration of another exemplary embodiment of the present invention.

(4) FIG. 4 illustrates a configuration of an example of a related-art converter.

DETAILED DESCRIPTION

(5) Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 illustrates a configuration of main parts of an exemplary embodiment of the present invention, and FIG. 2 is a plan view illustrating a main plane 21 of a safety cover 2. In FIGS. 1 and 2, the parts common to FIG. 4 are denoted with the same reference numerals. In FIGS. 1 and 2, a plurality of through-holes 6 for gas removal is circumferentially provided in the vicinity of an outer periphery of the main plane 21 of the safety cover 2, to which the indicator 3 cannot be attached.

(6) A size of an opening diameter (inner diameter) of each of the through-holes 6 is configured to be slightly smaller (for example, less than φ4) than an outer diameter of a test pin 9 so that the test pin 9 is not fitted therein, for safety purposes, and the number of the through-holes 6 is set so that a gas can easily enter and exit. The test pin 9 has a cylindrical shape with a length of 100 mm and a diameter of 4 mm.

(7) In the above configuration, when an explosion occurs in the amplifier case main body 1, an explosion pressure accompanied by the explosion is enabled to come out through the through-holes 6 serving, as gas removing holes and circumferentially provided on the main plane 21 of the safety cover 2.

(8) Thereby, the explosion pressure accompanied by the explosion is not directly applied to the main plane 21 of the safety cover 2 and an excessive explosion pressure is not applied to the safety cover 2.

(9) Also, it is possible to remarkably reduce the excessive explosion pressure to be applied to a window glass cover 4 without damaging the safety cover 2.

(10) FIG. 3 illustrates a configuration of another exemplary embodiment of the present invention, and the parts common to FIG. 2 are denoted with the same reference numerals. In FIG. 3, a plurality of rhombic through-holes 7 is provided in a regular mesh structure on the main plane 21 of the safety cover 2. In the meantime, a dotted line 3′ indicates an attachment position of the indicator 3.

(11) According to the structure of FIG. 3, the main plane 21 of the safety cover 2 is configured as the mesh structure consisting of the rhombic through-holes 7 each of which has a size not causing a general safety problem. Thereby, since the gas is enabled to come out through the through-holes 7 positioned at an outer side of the attachment position of the indicator 3, the same effect as the through-holes 6 of FIG. 2 is accomplished.

(12) In the meantime, the mesh structure of the main plane 21 of the safety cover 2 is not limited to the rhombic through-holes 7. That is, circular through-holes can also accomplish the same effect.

(13) Further, the shapes of the through-holes 6 and through-holes 7 provided on the main plane 21 of the safety cover 2 are not limited to the circular and rhombic shapes. That is, the other polygonal shapes such as a triangle, a quadrangle and a pentagon can also be adopted.

(14) As described above, according to the present invention, it is possible to implement the converter capable of reducing not only the damage of the safety cover but also the explosion pressure due to the pressure piling applied to the window glass cover.