JP2000059041A - Electric component housing case - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electric component housing case which is reduced in manufacturing cost and easily built in a lighting equipment main body. SOLUTION: An electric component housing case 1b is composed of a case main body 2, a case lid 3, a lower insulating sheet 4, and an upper insulating sheet 6 to house a printed board 5 mounted with electrical components 5a. Cutout pieces 10a to 10d provided to slopes 3p and 3q of the case lid 3 are bent inward to be horizontal in position so as to bear an upper insulating sheet 6. The slopes 3p and 3q are provided to the case lid 3 so as to enable the case lid 3 to be engaged with the case main body 2, so that the case lid 3 is easily deformed when a pressure is applied to an upper flat part 3r of the case lid 3, and the housing case 1b can be built easily into a lighting equipment main body. Since unnecessary parts of an insulating sheet are removed, an electric component housing case can be reduced in manufacturing cost.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrical component storage case configured to store electrical components via an insulating sheet.

[0002]

2. Description of the Related Art In order to control a discharge lamp with an inverter,
There is a case where an electric component constituting an inverter is housed in a case, installed at a position close to a discharge lamp, and incorporated into a lighting fixture body. FIG. 3 is a perspective view showing a schematic configuration of such an electric component storage case. The electric component storage case 1 of FIG. 3 will be described.

[0003] Reference numeral 2 denotes a case body, which is formed by bending a metal plate to provide side walls 2x and 2y and has a substantially groove-shaped cross section. Reference numeral 3 denotes a case lid, which is formed by bending a metal plate to provide side walls 3x and 3y, and similarly formed in a substantially groove shape in cross section. Side wall 3x of case lid 3
Are formed with engaging portions 3a and 3b. Although not shown, engaging portions 3c and 3d are formed on the other side wall 3y at positions symmetrical to the engaging portions 3a and 3b. These engaging portions are provided by forming a portion projecting inside the case lid 3 by, for example, embossing.

Openings are provided on both side walls of the case body at positions corresponding to the engaging portions 3a to 3d of the case lid 3. Openings provided in these case bodies are provided with case lids 3.
The case body 2 and the case lid 3 are engaged and fixed by engaging the respective engaging portions 3a to 3d.

[0005] The case body 2 houses a printed circuit board 5 on which a plurality of electric components 5a constituting an inverter are mounted. Reference numeral 7 denotes an insulating sheet that insulates the electric component 5a from the case body 2 and the case lid 3. This insulating sheet 7
Are arranged so as to cover the entire inner surface formed by the case body 2 and the case lid 3.

That is, the insulating sheet 7 passes from the bottom surface of the case main body 2 to the side walls on both sides of the case main body 2 and passes through the case lid 3.
Extends to the inside. Both ends of the insulating sheet 7 are bonded and fixed using a double-sided tape or the like. As described above, the insulating sheet 7 wraps around the printed circuit board 5 and insulates the electric component 5a from the case body 2 and the case lid 3, so that the insulating performance can be improved. Therefore, there is a problem that the manufacturing cost of the electrical component storage case increases.

FIG. 4 is a vertical sectional side view showing a schematic structure of an improved electric component storage case in which the manufacturing cost is reduced by reducing the amount of the insulating sheet used. The same components as those in FIG. 3 or corresponding portions are denoted by the same reference numerals. In this example, instead of using the insulating sheet 7 covering the entire inner surface of the case composed of the case body 2 and the case lid 3, the insulating sheet 7 is separated into a lower insulating sheet 4 and an upper insulating sheet 6 and arranged on the inner surface of the case. I have.

The lower insulating sheet 4 is provided with side walls 4x, 4y having a height lower than the side walls 2x, 2y on both sides of the case main body 2 so as to form a substantially groove-shaped cross section. 2 on the bottom. Projections 8 and 9 are formed on the inner side wall of the case lid 3 and the upper insulating sheet 6 is placed thereon. As described above, in the configuration of FIG. 4, by separating the insulating sheet into the lower insulating sheet 4 and the upper insulating sheet 6,
There is an advantage that the usage amount of the insulating sheet on the inner wall portion of the case can be reduced and the manufacturing cost of the electric component storage case can be reduced. The electric component storage case as shown in FIG. 4 is incorporated into the lighting fixture body together with the discharge lamp.

In recent years, there has been a demand for reduction in size and weight of lighting equipment, and the installation space for an electric component storage case of the lighting equipment body has been reduced. For this reason, the incorporation of the electric component storage case into the lighting fixture main body requires skill, but in particular, since the space between the upper cover of the lighting fixture main body and the electric component storage case is narrow, the case lid is flexibly deformed. It is desirable.

[0010]

However, in the electrical component storage case shown in FIG. 4, the case lid 3 is bent at a right angle to form the side walls 3x and 3y and is engaged with the case main body 2 so that it is not easily deformed. With such a configuration, there is a problem that it is difficult to incorporate the electric component storage case into the lighting fixture body.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has as its object to provide an electric component storage case that can be easily mounted while reducing manufacturing costs.

[0012]

SUMMARY OF THE INVENTION It is an object of the present invention to provide an electric component storage case having a case body formed in a substantially groove-shaped cross section and a height of a side wall being lower than a height of a side wall of the case body. A lower insulating sheet formed in a substantially groove-shaped cross section and arranged on the bottom surface of the case body; a case lid engaged with and fixed to the case body; and an upper insulating sheet fixed inside the case lid, and an electric component therein. In the electrical component storage case, the case lid includes an upper flat portion, an inclined portion formed by being bent from both side edges of the upper flat portion to both sides, and an end portion of each inclined portion. And a notch formed at the periphery of the opening provided in each inclined portion is bent inward in the horizontal direction to form a fixing member for the upper insulating sheet. , Case lid and case book It is achieved by a configuration in which a holding member for holding the.

According to the above feature of the present invention, since the case lid is provided with the inclined portion and is fixedly engaged with the case main body, when the pressing force is applied to the case lid, the case lid is easily deformed, and the electric component storage case is formed. Work becomes easier. Also,
Since the notch is supported by the case body to reinforce the holding force, the case cover does not fall into the case body even when a pressing force is applied to the case cover. Furthermore, since the insulating sheet is arranged only on the bottom surface, the top surface and a part of the side surface in the case,
The use amount of the insulating sheet is reduced, and the manufacturing cost of the electric component storage case can be reduced.

[0014]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an exploded perspective view showing an electric component storage case 1b of the present invention, and FIG. 2 is a longitudinal sectional side view thereof. The same components as those in FIG. 3 or corresponding portions are denoted by the same reference numerals. In FIG. 1, openings 2a and 2b for engaging the case cover 3 are provided in a side wall 2x of the main body case 2. Although not shown,
Similar openings 2c and 2d are provided on the opposite side wall 2y at positions symmetrical to the openings 2a and 2b.

Further, ribs 2p and 2q are formed at the front end and the rear end of the main body case 2. The ribs 2p and 2q are for fixing the printed circuit board 5 on which the electric components 5a are mounted so as not to move in the main body case 2. The lower insulating sheet 4 has side portions 4 a and 4 b bent along the side wall of the main body case 2.

When the lower insulating sheet 4 is placed in the main body case 2, the folded side portions 4a, 4a
The height of b is lower than the positions of the openings 2a to 2d formed on the side wall of the main body case 2. In this manner, the bent side portions 4a and 4b of the lower insulating sheet 4 do not hinder the engagement between the main body case 2 and the case lid 3.

The case lid 3 includes an upper flat portion 3r, inclined portions 3p and 3q which are formed by being bent to both sides from both side edges of the upper flat portion 3r, and ends of the inclined portions 3p and 3q. Side walls 3x, 3 formed by bending in the vertical direction
y.

Engaging portions 3a and 3b are formed on the side wall 3x. Engaging portions 3c and 3d are formed on the side wall 3y at positions symmetrical to the engaging portions 3a and 3b, though not shown. Have been. Groove-shaped openings 10p, 10q are provided in the inclined portion 3p.
Is provided. At this time, the notch pieces 10a and 10b formed on the peripheral edges of the groove-shaped openings 10p and 10q are bent inward in the horizontal direction.

Although not shown, the inclined portion 3q is also provided with groove-shaped openings 10r and 10s, and
c, 10d are bent inward in the horizontal direction. The bent lines of these notched pieces 10a to 10d are the inclined portions 3p, 3d.
It is formed at the bent portion at the boundary between q and the side walls 3x, 3y. As described above, forming the inclined portions 3p and 3q and the cutout pieces 10a to 10d on the case lid 3 can be easily performed by sheet metal processing.

FIG. 2 is a vertical sectional side view of the present invention in which the members of the case main body 2, the case lid 3, the lower insulating sheet 4, the printed circuit board 5, and the upper insulating sheet 6 as shown in FIG. The electric component storage case 1b is shown. FIG.
As shown in the figure, the inclined portions 3P, 3q of the case lid 3
The notch pieces 10a to 10d formed in the above are horizontally bent inside the case, and the upper insulating sheet 6 is placed thereon.

The notch pieces 10a to 10d are supported by the edges of the upper ends of the side walls 2x and 2y of the case body 2.
As described above, since the case lid 3 is provided with the inclined portions 3p and 3q and is engaged with and fixed to the case body 2, the case lid 3 is easily deformed when a pressing force is applied to the upper flat portion 3r of the case lid 3. It has a configuration.

Therefore, even when the space for attaching the electric component storage case 1b to the lighting fixture main body is narrow, the work of assembling the electric component storage case 1b becomes easy. Also,
The notch pieces 10a to 10d are the side walls 2x, 2 of the case body 2.
It is supported at the upper edge of y. Therefore, the protrusion 3a
3d, the case lid 3 does not fall into the case body 2 even if a pressing force is applied to the upper flat portion 3r of the case lid 3.

Further, since the notch pieces 10a to 10d are used in combination as a support member for the case lid 3 and a mounting member for the upper insulating sheet 6, there is no need to separately provide a mounting member for the upper insulating sheet 6. The number of parts does not increase. Further, since the upper insulating sheet 6 is fixed inside the inclined portions 3p and 3q of the case lid 3, the overall size of the electric component storage case 1b does not increase.

As described above, according to the present invention, as in the configuration shown in FIG. 4, the amount of the insulating sheet used is reduced to reduce the manufacturing cost, and the case lid 3 is made flexible so as to be deformable. This facilitates the work of assembling into the instrument body.

The number of cutout pieces 10a to 10d formed in the inclined portions 3p and 3q of the case lid 3 and the positions of the cutouts are not limited to those in the example shown in FIG. 1 and can be variously modified. For example, a single notch piece having a fixed length may be formed in the intermediate portion between the inclined portions 3p and 3q. Further, the electrical component storage case of the present invention is not limited to storing a printed circuit board on which electrical components are mounted, but can be applied to a general electrical component storage case.

[0026]

As described above, according to the present invention, since the case lid is provided with the inclined portion and is fixedly engaged with the case body, the case lid is easily deformed when a pressing force is applied to the case lid, and the electric component storage is performed. The work of attaching the case becomes easy. In addition, since the notch is supported by the case body to reinforce the holding force, the case lid does not fall into the case body even when a pressing force is applied to the case lid. Furthermore, since the insulating sheet is arranged only on the bottom surface, the top surface and a part of the side surface in the case,
The use amount of the insulating sheet is reduced, and the manufacturing cost of the electric component storage case can be reduced.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing an electric component storage case according to an embodiment of the present invention.

FIG. 2 is a vertical sectional side view of an electric component storage case.

FIG. 3 is a perspective view showing a conventional electric component storage case.

FIG. 4 is a longitudinal sectional side view of a conventional electric component storage case.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1, 1a, 1b Electric component storage case 2 Case main body 3 Case lid 3p, 3q Inclined part 4 Lower insulating sheet 5 Printed circuit board 5a Electric component 6 Upper insulating sheet 7 Insulating sheet 8, 9 Projection part 10a to 10d Bent piece

Claims (1)

[Claims] 1. A case body formed in a substantially groove-shaped cross section,
A lower insulating sheet that is formed in a substantially groove-shaped cross-section with the height of the side wall being lower than the height of the side wall of the case main body and is disposed on the bottom surface of the case main body; a case lid engaged with and fixed to the case main body; In an electric component storage case including an upper insulating sheet fixed inside, and in which an electric component is stored therein, the case lid is inclined upward and downward from both side edges of the upper flat portion and both side edges of the upper flat portion. The inclined part formed by bending and the side wall that is bent and formed vertically from the end of each inclined part, and the notch piece formed on the periphery of the opening provided in each inclined part is inward in the horizontal direction. Folded in
An electric component storage case comprising: a fixing member for the upper insulating sheet; and a holding member for holding a case lid to a case body.