JPS6331404Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an improvement of a cooling device for a heating element, which is made of, for example, a power diode for rectification.

Figure 1 shows a vertical example of this type of device. In the figure, 1 and 2 are plate-shaped bodies facing each other with a cooling air intake 3 in between, and 1a and 2a are the opposing surfaces of the plate-shaped bodies 1 and 2. Cooling fins 4 are formed at predetermined intervals, and numeral 4 is attached closely to the outside of the plate-like bodies 1 and 2, and a heating element consisting of a power diode for rectification; 5 is a heating element formed between the plate-like bodies 1 and 2 and the cooling fins. A base 6 is a block 7 fixed to the base 5, which is in contact with the lower surfaces of 1a and 2a.
Screws 8 for fixing the plate-like bodies 1 and 2 are exhaust ports formed between the cooling fins 1a and 2a.
Note that an upper plate is provided in contact with the upper surfaces of the plate-like bodies 1 and 2 and the cooling fins 1a and 2a, but is not shown.

With the above structure, the heat generated from the heating element 4 is transmitted to the cooling fins 1a and 1b through the plate-shaped bodies 1 and 2, and is radiated by contacting the cooling air supplied from the cooling air intake port 3. This prevents the heating element 4 from overheating. The cooling air heated by contacting the cooling fins 1a and 1b is discharged from the exhaust port 8.

As described above, in the conventional type, the ends of the left and right cooling fins 1a and 2a face each other, so the cooling air supplied from the cooling air intake port 3 flows linearly toward the exhaust port 8, thereby cooling the air. Since sufficient contact is not made with the heat radiation surfaces of the fins 1a and 2a, the cooling efficiency is low, and in order to keep the temperature of the heating element 4 below a predetermined temperature, the device has to be large in size.

The purpose of this invention is to improve the drawbacks of the conventional ones as described above.

An embodiment of this invention will be described below with reference to FIG.

In the figure, the same reference numerals as in FIG.
a The other parts are exactly the same in size and shape, and a zigzag-shaped ventilation passage 9 is formed by inserting the cooling fins 1a of one plate-shaped body 1 between the cooling fins 2a of the other plate-shaped body 2. do. the result,
The cooling air supplied from the cooling air intake port 3 can be brought into sufficient contact with the heat radiation surfaces of the cooling fins 1a and 2a.

As described above, according to this invention, a zigzag-shaped ventilation path is formed by inserting one cooling fin between the other cooling fins, and the cooling air has sufficient contact with the heat dissipation surface of each cooling fin. Therefore, it is possible to provide a cooling device for a heating element that has excellent cooling efficiency and is miniaturized.

[Brief explanation of drawings]

FIG. 1 shows a conventional example, a plan view with the top plate removed, and FIG. 2 shows an embodiment of this invention.
FIG. 3 is a plan view with the top plate removed. In the figures, the same reference numerals indicate the same or corresponding parts, 1 and 2 are plate-shaped bodies, 1a and 2a are cooling fins,
3 is a cooling air intake, 4 is a heating element, and 9 is a ventilation passage.

Claims (1)

[Scope of utility model registration request] The heating element is attached to the side, and the cooling fins of one plate-shaped body, which are arranged in parallel at a predetermined interval on opposite plate-shaped bodies with the cooling air intake in between, are placed between the cooling fins of the other plate-shaped body. A heating element cooling device characterized by being inserted into a heating element to form a zigzag ventilation passage.