JP2009246202A - Electrical component storage case and electrical apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electrical component storage case for reducing a risk that mounting brackets fall off, and to provide an electrical apparatus. <P>SOLUTION: An electrical component storage case 12 is provided with: a hollow cylindrical case body 15 having openings on both ends and storing electrical components inside; a pair of slide grooves 41 and 42 provided in the outer surface of the case body 15 in such a manner as to extend in an opening direction from the vicinity of at least one opening while facing each other; blocking plates 18 and 19 for blocking both ends of the case body 15; and a mounting bracket 43 having an engagement part 43a that is slidably fitted in the slide grooves 41 and 42 to project to the outside, formed to regulate slides by abutting against the ends of the blocking plates and screwed on the case body 15. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

The present invention relates to an electrical component storage case and an electrical device.

For example, in some lighting fixtures using a high-pressure discharge lamp as a light source, a lighting device is not built in the lighting fixture but is provided separately.

In such a case, the electrical components constituting the lighting device are accommodated in an electrical component storage case, and the case is attached to the instrument main body, a column supporting the instrument, or the like.
Here, in order to attach the electrical component storage case, it is often used that the electrical component storage case is usually attached to the instrument main body or the like via a mounting bracket fixed to the outer surface of the case with a screw or the like (for example, Patent Document 1).
JP-A-5-291759

However, in the structure of the conventional electrical component storage case, since the mounting bracket is attached to the case with a screw or the like, the electrical component storage case may fall if the screw is dropped. It was.
The present invention has been made in view of the above problems, and an object of the present invention is to provide an electrical component storage case and an electrical device that can reduce the risk of dropping of the mounting bracket.

An electrical component storage case according to the present invention as set forth in claim 1 has a hollow cylindrical case main body having openings at both ends and accommodating electrical components therein; an opening direction while facing each other from the vicinity of at least one of the openings A pair of slide grooves provided on the outer surface of the case main body so as to extend to each other; a closing plate that closes both ends of the case main body; And a mounting bracket that is screwed to the case main body and has a locking portion that is formed so as to be struck against the end portion to restrict sliding.

  Here, the case main body needs to incorporate various electric components mounted on a printed board, for example. Therefore, the case main body can be used in such a manner that a bottom portion and a member covering the case are combined to form a cylindrical shape.

Furthermore, the mold for manufacturing the cylindrical case has a relatively high mold cost as compared with the extrusion mold, and the manufacturing cost of the case tends to be high, so that the extrusion molding material cut as desired. It is preferable to form a cylindrical case body using
When such an extrusion molding material is applied, the pair of slide grooves into which the closing plate is fitted can be integrally formed on the outer surface of the case body.

According to a second aspect of the present invention, there is provided an electric device comprising the electric component storage case according to the first aspect; and an electric component accommodated in the case.

According to the present invention, the mounting bracket fitted into the slide groove is formed with the locking portion that abuts against the closing plate that closes the end of the case body, so that the sliding of the mounting bracket itself is It will be regulated by. Therefore, even if the screw for screwing the mounting bracket and the case main body is removed, the mounting bracket can be effectively prevented from being removed from the slide groove, and the risk of the mounting bracket falling off can be reduced.

Hereinafter, an embodiment of an electrical component storage case and electrical equipment according to the present invention will be described with reference to the drawings.
FIG. 1 is an exploded perspective view of an electrical component storage case and an electrical device showing one embodiment.

  The electric device of the form shown here is a discharge lamp lighting device 11, and this discharge lamp lighting device 11 is configured by housing a substrate 13 in an electrical component storage case 12, and is a discharge lamp such as a high pressure discharge lamp (HID). Is to light up.

  The electrical component storage case 12 comprises, for example, a case body 15 formed in a rectangular tube shape by a metal extrusion molding material such as aluminum, and packings 16 and 17 attached to both ends of the case body 15 and a closing plate And lid portions 18 and 19 are provided.

  Extruded case main body 15 according to this embodiment is a hollow cylindrical structure with openings 21 and 22 at both ends, and can be easily adjusted in size simply by changing the cutting length with a common mold. It is excellent in versatility and can reduce the manufacturing cost.

Further, groove portions 23 and 23 as a pair of holding portions sandwiching the substrate 13 are provided on opposite surfaces on the inner side of the case body 15. The grooves 23 and 23 are arranged on a straight line connecting both the openings 21 and 22 of the case main body 15.

For the purpose of maintaining the insulation inside the case body 15, the packing 16 is preferably arranged in order to improve the sealing performance between the case body 15 and the lid portions 18 and 19 when filled with a curable synthetic resin liquid. For example, it is formed of a member having elasticity and flexibility, such as chloroprene or a rubber material.
An adhesive layer is formed on the surface of the packing 16, and is attached to the opening 21 in a state of being adhered to the inner surface of the lid portion 18.
The lid 18 is made of, for example, the same aluminum as the case main body 15, and is fixed to the case main body 15 together with the packing 16 with screws S1 and the like.

Here, the aluminum extrusion-molded material is usually anodized, but the cut end portion cut to a predetermined length exposes the aluminum background, and in the case of electrical equipment, the electric corrosion of the exposed portion is caused. Since this may occur, reduction of electric field corrosion can be expected if the adhesive packing 16 is interposed in the openings 21 and 22.

The substrate 13 includes a rectangular plate-shaped substrate body 31 and electronic components 32, 33a, 33b, which are lighting circuit components mounted on the front surface or the back surface of the substrate body 31.

  The substrate body 31 is formed of an insulating member such as glass epoxy. A spacer projecting in the longitudinal direction is attached to an end portion of the substrate body 31 so that a communication portion is formed between the end portion of the substrate body 31 and the packing 17. In other words, the end of the substrate body 31 and the packing 17 are separated from each other by a predetermined distance because the tip of the spacer contacts the packing 17.

The electronic component 32 is, for example, a capacitor, a resistor, an inductor, a transistor, or an IC. Along with a pattern (not shown) formed on the substrate body 31, an electronic circuit 32 is connected to an inverter that lights a predetermined circuit (not shown). The provided lighting circuit is formed on the substrate body 31. In each figure, only a part of the electronic components 32, 33a, and 33b is described, and the arrangement thereof can be arbitrarily set.

At the center of one surface of the case body 15, there are U-shaped slide grooves 41, 42 extending in the direction connecting the openings 21, 22 from the vicinity of the openings 21, 22 at both ends thereof and facing each other. Is formed.

The slides 41 and 42 are configured such that the mounting bracket 43 can be slid in a state where the mounting bracket 43 is sandwiched. For example, the grooves 41 and 42 are integrally extruded as the case body 15.

The mounting bracket 43 that is slidably sandwiched between the slide grooves 41 and 42 is bent and formed at the upper portion thereof so as to exhibit, for example, a step. Then, with the portion corresponding to the lower part in the figure inserted into the slide grooves 41, 42, the upper surface of the bent part is positioned flush with one opening 21 in the horizontal direction in the figure. ing.
In addition, the lid 18 that closes the opening 21 has a convex shape 18a so as to cover the upper surface of the bent portion of the mounting bracket 43.

Therefore, when the lower portion of the mounting bracket 43 is inserted into the slide grooves 41, 42, the opening of the case body 15 is closed by the lid portion 18, and the lid 18 is fixed to the case body 15 by the screw S1. The upper surface of the bent portion of the metal fitting 43 acts as the locking portion 43a and abuts against the back surface of the convex lid portion 18a, so that the sliding of the entire attachment metal fitting 43 is completely restricted.
A mounting hole 43b for attaching the discharge lamp lighting device 11 to a lighting fixture body (not shown), for example, is provided in the upper part of the mounting bracket protruding upward.

  The mounting bracket 43 is screwed to the case main body 15 by a screw S3 through a screw hole 43c formed below. As a result, even if the screw S3 for screwing the mounting bracket 43 is removed, the mounting bracket 43 is locked by the lid 18 while being sandwiched between the slide grooves 41, 42, so the mounting bracket 43 is dropped. There is nothing to do.

In addition, in the mounting bracket 43 in the above-described embodiment, a description has been given of a configuration in which the locking portion 43a that abuts against the lid portion 18 is configured by a portion that is bent and formed so as to exhibit a step, for example, a flat mounting bracket It is also possible to form an opening into which the convex portion of the lid portion is inserted, and to make the inner surface of this opening abut against the convex portion of the lid portion.
In this case, the locking portion of the mounting bracket corresponds to the inner surface of the opening.

  In addition, the electric device 11 is not limited to a discharge lamp lighting device using a lighting circuit component for lighting a discharge lamp, but can be applied to other power conversion devices, other electric devices, and the like. An effect is obtained.

It is a disassembled perspective view which shows one Example of the electrical component storage case and electrical apparatus of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 Electric equipment 12 Electrical component storage case 13 Board | substrate 15 Case main body 18, 19 Closure board (lid part)
31-34 Electrical parts 41, 42 Slide groove 43 Mounting bracket S1, S2, S3 Screw

Claims (2)

A hollow cylindrical case body having openings at both ends and accommodating electrical components therein;
A pair of slide grooves provided on the outer surface of the case body so as to extend in the opening direction while facing each other from the vicinity of at least one opening;
A closing plate for closing both ends of the case body;
A fitting that is slidably fitted in the slide groove, protrudes to the outside, has a locking portion formed so as to abut against the closing plate and is restricted from sliding, and is screwed to the case body;
An electrical component storage case comprising: An electrical component storage case according to claim 1;
Electrical components housed inside the case;
An electrical apparatus comprising:

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