JP3636564B2 - Circuit board device and manufacturing method thereof - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a circuit board device that can be easily assembled and a manufacturing method thereof.
[0002]
[Prior art]
As shown in FIG. 5, when a substrate 31 provided with a semiconductor or the like that becomes high temperature when energized is connected to a substrate 33 provided with other elements, a plurality of pins 37 of the substrate 31 are conventionally provided. After the (charging part) was soldered through the plurality of holes 35 of the substrate 33, it was housed in the case 41 using an adhesive, screws, or the like. Thereafter, a lid (not shown) was attached to the case 41 on which the substrates 31 and 33 were mounted with screws or the like.
[0003]
[Problems to be solved by the invention]
However, when the substrate 31 is attached to the substrate 33 as in the conventional case, the plurality of pins 37 may be scattered and not fit into the plurality of holes 35, which may complicate the work. Further, when fixing the substrates 31 and 33 to the case 41 and attaching a lid to the case 41, it is necessary to use a large number of screws.
[0004]
The present invention has been made in order to solve the above-mentioned problems, and the object thereof is completed by a small number of fixing operations, and an object thereof is to prevent the substrate from being bent by fixing with a small number of screws. .
[0005]
[Means for Solving the Problems]
In order to solve the above problems, a circuit board device and a manufacturing method thereof according to the present invention are provided.
Therefore, the present invention is devised so that the substrate can be securely fixed and stored in the case with a small number of steps. The other substrate connected to the substrate having the pins is provided with holes in the prior art, but in the present invention, even when a plurality of pins are scattered by providing a notch, the bonding with the other substrate is possible. it can. Further, by forming a groove for inserting another substrate in the heat radiating aluminum fin, the number of screws for fixing the end of the other substrate can be reduced. When storing in a U-shaped case, it can be easily stored in the case by expanding both ends of the opening facing inward of the U-shaped case and attaching the both ends so that they are in close contact with the aluminum fins. It becomes possible to do.
[0007]
【Example】
The circuit board device of the embodiment is a ballast for lighting a discharge lamp. Hereinafter, a first embodiment of the present invention will be described with reference to FIG.
This ballast is composed of a substrate 1 on which a main semiconductor or the like is mounted, a substrate 3 on which other elements are mounted, a substrate 1 and a heat-dissipating aluminum fin 5 that fixes the substrate 3.
First, the substrate 1 on which the main semiconductor or the like is mounted is fixed to the aluminum fin 5 using an appropriate fixing means such as an adhesive. At this time, in order to maintain the insulation distance, it is necessary that the distance between the pin 7 (charging portion) provided on the substrate 1 and the aluminum fin 5 is 3 mm or more. Therefore, a guide 9 or an emboss may be provided on the surface of the aluminum fin substrate 1 that contacts the ground so that the end portion of the substrate 1 is kept at a certain position. If necessary, an insulator may be provided between the substrate 1 and the aluminum fin 5.
Then, the board | substrate 3 in which the some notch 11 formed in the comb shape for inserting the pin 7 was formed is fixed to the aluminum fin 5 using the screw | thread 15. FIG. Then, the pin 7 is soldered to the substrate 3. The shape of the end portion 13 when the pin 7 is inserted into the notch 11 may be rounded so that the pin 7 can be inserted more easily. Further, the step between the end 13 and the end 21 is provided to easily insert the pin 7 from the end 13 side. The substrate 3 is fixed to a flange 17 formed on the aluminum fin 5 with screws 15 as shown in FIG. The flange 19 is formed so as to sandwich the end 21 of the substrate 3 by forming a groove with the flange 17.
[0008]
A second embodiment of the present invention will be described with reference to FIG. A description of the components having the same numbers as those in the first embodiment will be omitted.
2 is the same as the first embodiment except for the convex portion 23. Similarly to the end portion 21, the end portion 25 of the convex portion 23 is sandwiched and fixed by a groove formed by the flange 17 and the flange 19. The convex portion 23 can be appropriately provided depending on the arrangement of the pins 7 provided on the substrate 1. That is, a plurality of convex portions 23 may be provided by arranging the pins 7. Thereby, the bending of the substrate 3 can be prevented.
[0009]
A third embodiment of the present invention will be described with reference to FIG. A description of the components having the same numbers as those in the first embodiment will be omitted.
3 is different from the first embodiment in that the notch 11 is deepened by aligning the end 13 in FIG. 1 with the end 21. In FIG. 3, the plurality of end portions 14 are fixed by being sandwiched between grooves formed by the flange 17 and the flange 19, similarly to the end portion 21. The second embodiment is an example in which the convex portion 23 is appropriately provided by the arrangement of the pins 7 provided on the substrate 1, whereas the third embodiment is a general-purpose type.
[0010]
A fourth embodiment of the present invention will be described with reference to FIG.
The case 27 main body is formed in a substantially U-shape when viewed from the side. The legs of the case 27 are inclined inward (not shown) in order to improve the adhesion of the joints with both ends of the aluminum fin 5. When the aluminum fins 5 to which the substrates 1 and 3 are fixed are stored in the case 27, the openings formed by both ends of the case 27 are expanded and stored. At this time, as shown in FIG. 4, a groove 29 formed by a flange may be provided to fix the substrate 3. This prevents the substrate from being bent.
[0011]
【The invention's effect】
As described above, according to the present invention, when a substrate having pins is bonded to another substrate, the other substrate can be easily bonded by providing a cut. By inserting the end portion where the notch of the other substrate is provided into the groove provided in the aluminum fin, the deflection can be prevented and the number of screws for fixing the other substrate can be reduced. Since the both ends of the opening of the U-shaped case are attached so as to be in close contact with the aluminum fin, the cooling effect of the ballast is enhanced. Since both ends of the opening portion facing the inward of the U-shaped case are widened, the both end portions are attached so as to be in close contact with the aluminum fin, so that the case can be easily accommodated. Thus, the structure is simple, the number of parts is reduced, and work efficiency can be increased.
[Brief description of the drawings]
FIG. 1 is a front view, a side view, and a bottom view of a first embodiment of the present invention.
FIG. 2 is a front view, a side view, and a bottom view of a second embodiment of the present invention.
FIG. 3 is a front view, a side view, and a bottom view of a third embodiment of the present invention.
FIGS. 4A and 4B are a front view and a side view of a fourth embodiment of the present invention. FIGS.
FIG. 5 is a front view, a side view, and a bottom view of the prior art.
[Explanation of symbols]
1 Substrate 3 Substrate 5 Aluminum fin 7 Pin 9 Emboss 11 Notch 13 End 14 End 15 Screw 17 Flange 19 Flange 21 End 23 Projection 25 End 27 Case 29 Groove

Claims (2)

A substrate having a plurality of pins , wherein the pins protrude from the end of the substrate substantially parallel to a main plane of the substrate ;
A heat dissipating fin fixed to the main plane of the substrate; and another substrate having an end portion in which a plurality of cuts for inserting individual pins of the substrate are formed ,
An end having a notch in the other substrate is inserted into a groove having a flange extending in a direction perpendicular to a main plane of the substrate provided in the fin and screwed to the flange;
A circuit board device in which a main plane of the board and a main plane of the other board are arranged orthogonal to each other, and each of the pins of the board is inserted individually corresponding to the cut of the other board. 2. The circuit board device according to claim 1, wherein both ends of the opening of the U-shaped case are attached so as to be in close contact with both ends of the aluminum fin.

Images