JPS5910799Y2 - Electrical component mounting equipment - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to an electrical component mounting device.

Conventionally, electrical components such as transistors, which require heat dissipation, have been incorporated into printed circuit boards.
Transistors used in audio equipment and the like are usually provided with a heat sink to promote heat dissipation.

Since this heatsink is usually bulky, electrical parts such as transistors are assembled on the board, soldered, and then the heatsink is attached to improve work efficiency.

However, in the case of a device in which multiple transistors are assembled on a board, in order to secure contact between the heatsink and the transistor, whether the heatsink is attached to the board or the chassis, the transistor must be attached with screws. In this case, the transistors are held down by a holding plate, and it takes time and effort to align the holes of each of the plurality of transistors with the holes of the heatsink.

It requires adjustment and has poor workability.

In addition, even if one of the multiple transistors fails after installing the heatsink, the heatsink must be removed in order to replace the failed transistor. If a large number of electrical components are installed in a location, these electrical components may get in the way when installing or removing transistor screws, resulting in poor workability.
Additionally, it is generally said that when transistors and high-frequency components that are sensitive to heat are mounted on the same board, such as in a radio receiver, the capacitance of the variable capacitor changes due to the heat from the transistor's heatsink. Problems with temperature drift have occurred, causing scale misalignment.

The present invention was devised in view of these points. A holding part is provided on the partition plate, a radiator is attached to this partition plate, and a component requiring heat radiation is clamped between the radiator and the holding part. In this way, each compartment can be insulated from heat, and
This is intended to facilitate the contact and fixation of electrical components that require heat radiation and a radiator.

Next, an embodiment of the present invention will be described with reference to the drawings.

1 is the back plate installed behind the front scale plate,
Reference numeral 2 denotes a rear panel, and the back plate 1 and the rear panel are arranged apart from each other, and the printed circuit board 3 and chassis 4 are placed between the back plate 1 and the rear panel 2 by bending the chassis 4. The partition plate 5 forms a low heat radiation section 6 and a high heat radiation section 7, respectively.

On one edge of the printed circuit board 3 of the low heat dissipation section 6 facing the partition plate 5, a plurality of transistors 8 are arranged as electric components requiring heat dissipation, with the heat dissipation surface facing outward on one side and located on the same vertical plane. On the other hand, a high frequency component 9 is attached to the other end, and other electrical components 10 are attached to the center and front ends, with the shaft 11 of the electrical component 10 at the front end protruding forward from the back plate 1.

In addition, the chassis 4 of the high heat dissipation section 7 on one side includes:
A heat dissipating electric component 12 such as a transformer is attached, and the substrate 3 on the other side is installed below the partition plate 5.
The holding portion 13 is cut and shaped into an inverted L shape that protrudes to the side, and the transistor 8 is positioned in an opening 14 formed on one side of the holding portion 13 by the holding portion 13.

Further, a heat dissipation surface 5a with minute irregularities is formed on the outer surface of one side of the partition plate 5, and bent pieces 15 and 16 are formed on the upper end facing outward and on both sides toward the substrate 3 side. death,
The bent piece 16 is attached to the front back plate 1 and the back panel 2.
Fix it with screws 17.

Further, 18 is a heat radiator, and this heat radiator 18 is connected to the opening 1.
A screw hole 20 is formed on both sides of the base 19 which covers the base 19 and further extends around the periphery, and a large number of fins 2 are formed on one side.
1 is installed protrudingly.

Then, the base 19 of the heatsink 18 is brought into contact with the partition plate 5 and the heatsink surface of the transistor 8, and the presser part 13 and the heatsink 18
The transistor 8 is clamped between the base 19 of the
The heat radiator 18 is fixed to the partition plate 5 at.

According to the present invention, heat-dissipating electrical components including electrical components that require heat dissipation and other electrical components are respectively disposed while being heat-shielded by a partition plate, and the partition plate is formed with a holding part, and the heat radiator is attached to the heat radiator. Since it is attached to the partition plate and the electrical components that require heat dissipation are clamped between the heat sink and the holding part, there is no need to individually attach multiple transistors to the heat sink, for example. The device can be easily removed, and there is no need to perform any special processing on the radiator, making it extremely convenient.

In addition, the partition board blocks heat from the electrical components in each section, and heat-emitting electrical components are placed on one side where the radiator is located, and high-frequency electrical components that are easily affected by heat are placed on the other side. In addition, the partition plate can be made of a good thermal conductor to increase the contact area with the heat sink, promoting heat dispersion and improving the heat radiation effect.

[Brief explanation of drawings]

FIG. 1 is a partially cutaway plan view of an embodiment of the mounting device of the present invention, and FIG. 2 is a longitudinal sectional view of the portion. 5... Division board, 8... Transistor as an electrical component requiring heat dissipation, 9.10... Electrical parts, 12... Heat-emitting electrical parts, 13...
- Presser foot.

Claims (1)

[Scope of utility model registration request] Heat dissipating electrical components including heat dissipating electrical components and other electrical components are divided into one side and the other side by a partition plate, and among the heat dissipating electrical components located on one side of the partition plate, Electrical components that require heat dissipation are arranged on one side of a holding part shaped like a partition plate,
An electrical component mounting device characterized in that a heat radiator is attached to one side of the partition plate, and an electrical component requiring heat radiation is clamped between the heat radiator and a holding portion of the partition plate.