JPH0449644A - Radiator - Google Patents

Abstract

PURPOSE:To enable a number of radiators to be formed by providing a plurality of base plates which differ in shape and dimensions, providing a plurality of fins which differ in shape and dimensions, and combining both arbitrarily. CONSTITUTION:Both of a rectangular and large flat plate base plate 1 and a thin stripe fin consist of a metal such as aluminum and each is constituted as separate parts independently. Dovetail-groove type fin mounting grooves 1a are formed in parallel at a specified gap on both surfaces of the base plate 1. A part with a large thickness of one side part of a fin 2 is an dovetail-type base part 2a and the thickness gradually becomes smaller from here toward a tip side. The dovetail-groove type fin mounting groove 1a and the dovetail- type base part 2a are finished to dimensions so that they are engaged with a slight gap. Then, when the base part 2a of the fin 2 is inserted into the fin mounting groove 1a of the base plate 1 from a side direction along a longer direction, both are fixed in one piece while the fin 2 is nearly crossed in reference to the base plate 1.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to improvements in heat sinks used incidentally to mounting heat generating elements such as power transistors and diodes in various electrical devices.

(Prior art) When mounting semiconductor elements such as power transistors in equipment, it is necessary to take sufficient heat radiation measures to prevent the internal temperature of the element from exceeding a limit value. Metal heat sinks with good thermal conductivity are widely used. This type of radiator has a shape in which a large number of radiating fins are formed in parallel because the larger the surface area, the greater the heat radiating effect. In addition, the heat dissipation effect improves as a larger heat sink is used, but in order to make the entire electrical equipment smaller and lighter, it is necessary to use a heat sink as small as possible commensurate with the heat output of the element, which is more cost effective. is also advantageous. Furthermore, it is necessary to optimize the overall shape and dimensions of the heatsink depending on the arrangement relationship with other circuit elements around the heatsink.

(Problem to be solved by the invention) Conventional heat sinks are manufactured as a whole in one piece by die casting or cutting, and there are many types of ready-made products with different overall shapes and dimensions, and the size and number of fins. is commercially available. When designing the mounting structure of electrical equipment, several types of heatsinks are actually combined with elements and incorporated into the equipment.
Select a heatsink that is as small as possible by checking whether the heat radiation effect is sufficient and whether the amount of heat radiation is excessive.

In this case, if there is no heatsink with an appropriate shape and size for mounting,
Work involved removing part of the heat sink and cutting the fins to reduce the number of fins. Such additional processing for selecting and optimizing the heatsink is extremely troublesome, and has become a factor that hinders the efficiency of mounting design.

This invention was made in view of the conventional problems mentioned above.
The purpose is to make it possible to efficiently and easily optimize a heat radiator attached to a specific heating element of a specific electrical device.

(Means for Solving the Problem) Therefore, in this invention, the base plate and the fins constituting the heat sink are constructed separately, and a large number of fin mounting grooves are provided on both sides of the base plate, and a large number of fins are attached to the base of the base plate. is integrated with the base plate by fitting and attaching it to the base plate.

(Function) If you provide multiple types of base plates with different shapes and dimensions, and multiple types of fins with different shapes and dimensions, you can combine them arbitrarily to improve the overall shape, dimensions, and heat dissipation. A large number of types of heat sinks with different capabilities can be easily obtained.

(Embodiment) FIG. 1 shows a schematic configuration of a heat sink according to an embodiment of the present invention. In the figure, reference numeral 1 indicates a large rectangular flat base plate, and reference numeral 2 indicates elongated strip-shaped fins, both of which are made of metal such as aluminum, and are constructed independently as separate parts.

Dovetail-type fin mounting grooves 1 on both sides of the base plate 1
a are formed in parallel at predetermined intervals. fin 2
The thick part on one side is the dovetail-shaped base 2a, and the thickness gradually decreases from here toward the tip side. Dovetail-shaped fin mounting groove 1a and dovetail-shaped base 2a
The fins 2 are finished with dimensions that allow them to fit together with a slight gap, and when the base 2a of the fin 2 is inserted into the fin mounting groove 1a of the base plate 1 from the side along the longitudinal direction, the fin 2 will almost fit into the base plate 1. Both are integrally fixed in a perpendicular state. Here, in order to increase the fixing strength of the fins 2 to the base plate 1, the base plate 1
(slightly curved) in the direction of the fin mounting groove 1a.
The fin 2 is inserted into the fin mounting groove 1a distorted by the curvature.
By forcing the base 2a of the base plate 1 into place, the elastic force of the base plate 1 can fix the fins 2 more firmly.

(Effects of the Invention) As explained above in detail, the heat sink of the present invention has a base plate and a fin configured separately, and the base of the fin is fitted into the fin mounting groove provided on the base plate. Since the structure integrates both, several types of base plates with different shapes and dimensions are provided, as well as several types of fins with different shapes and dimensions, and these are combined as appropriate and the number of fins installed is adjusted appropriately. By adjusting the temperature, it is possible to easily obtain a large number of types of heat sinks with different overall shapes, dimensions, and heat dissipation effects, making them suitable for mounting specific heating elements in specific electrical equipment. It is possible to efficiently manufacture a heatsink with a suitable size and appropriate heat dissipation effect. This makes optimization of heatsinks in the mounting design and prototyping stages of various electrical devices appropriate and efficient.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing the structure of a heat sink according to an embodiment of the present invention. 1...Base plate 1a...Fin mounting groove 2...Fin 2a...Base

Claims (1)

[Claims] A heat dissipation device consisting of a base plate with a large number of fin mounting grooves on both sides, and a large number of fins that are formed separately from the base plate and are integrated with the base plate by fitting and mounting the base into the fin mounting grooves. vessel.