JPH08307079A - Windshield plate for preventing leakage of cooling air at electronic apparatus part - Google Patents

Abstract

PURPOSE: To prevent leakage of cooling air at an empty slot by providing a corrugated windshield plate having protrusions and recesses for preventing leakage of cooling air and hermetically sealing the space of arbitrary width produced by an empty slot. CONSTITUTION: A rail beam 7 for windshield plate is provided at a part for mounting a printed board 5. Windshield plates 9, 10 comprising corrugated plates previously laminated while taking account of the slot width are inserted into a windshield plate rail for fitting the windshield plates 9, 10. Cooling air 6 from below can be prevented from leaking to the outside through the shielding effect of the windshield plates 9, 10. The windshield plates 9, 10 can be shaped to have arbitrary width corresponding to that of empty slot and laminated arbitrarily so long as it is corrugated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a semiconductor tester, an electronic control rack having a large number of printed circuit boards mounted with electronic components of electronic equipment, and a cooling air flow in an empty slot of the printed circuit board. Regarding preventing leakage.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 3, when a printed circuit board 5 having an electronic component 4 is vacant,
In order to prevent the cooling air from leaking to the outside of the electronic control rack, the dummy substrate 2 provided with the windshield rubber 1 is screwed to the empty slot 3 with the screws A and B in FIG. However, there are drawbacks that the dummy substrate 2 must be prepared according to the width of the empty slot 3, and that parts and man-hours for screwing them are required.

[0003]

Problems to be solved by the present invention are listed below. (1) The width of the empty slot 3 differs depending on the height of the electronic component 4 mounted on the printed circuit board 5, and is normally configured with an inch step width. However, various types of dummy circuit boards 2 corresponding to the respective widths can be used. This is inconvenient because it is necessary to prepare them, a large number of stocks are required, and management man-hours increase. (2) It is necessary to screw the dummy board 2 with a screw, and therefore a screw and a screwing holder are required. It also takes man-hours for that. (3) At the time of design, the rack structure cannot be designed until the electronic control design is fixed, which is also inconvenient for shortening the design period.

[0004]

In the present invention, the width of the empty slot can be set arbitrarily, and the above (1) to
A means which can solve the drawback (3) and can be realized at low cost.

[0005]

EXAMPLES Example 1 FIG. 1 shows an example according to the present invention. In FIG. 1, the windshield plates 9 and 10 are used instead of using the dummy substrate 2 to the empty slot 3 as in the conventional case.

That is, the windshield plate rail tension 7 is provided on the mounting portion of the printed circuit board 5, and the windshield plates 9 and 10 are provided.
The windshield plates 9 and 10 each having a corrugated plate shape are previously inserted into the windshield plate rail 11 in which the widths of the empty slots are taken into consideration.

In the electronic control rack of this structure, the cooling air 6 from below cools the printed circuit board 5 without leaking to the outside due to the shielding effect of the windshield plates 9 and 10.

By adopting this structure, as in the conventional case,
The dummy substrate 2 for preventing the cooling air from leaking to the outside is not required, and therefore, the dummy substrate fixing parts and the installation man-hours therefor are also unnecessary.

If the windshield plates 9 and 10 are in the shape of corrugated plates, they can be arbitrarily overlapped with each other and can be processed into any width corresponding to the width of the empty slot. Also,
It is desirable that the material used is heat resistant, self-extinguishing, and electrostatic resistant, and if it is a hard, elastic plastic, it can be easily inserted and fixed in the windshield plate rail 11.
There is little leakage of the cooling air 6.

(Second Embodiment) FIG. 2 shows another embodiment of the first embodiment. That is, the windshield pre-made of corrugated sheet
Instead of the plates 9 and 10, rigid plates, that is, rigid plates 12 and 13
It is characterized by using. The embodiment having this structure does not require the dummy board 2 as in the conventional case, and therefore has the advantage that the dummy board stop parts and the installation man-hours therefor are unnecessary, and is different from the second embodiment. Since the windshield plate is not wavy, the windshield plates 10 and 11 can be opened and closed even after the windshield plates 10 and 11 are attached to the windshield plate rail 11, and other printed circuit boards can be taken out freely. Have good points. It is more preferable to seal the gap between the two windshield plates and the gap between the windshield plate rail and the windshield plate with an elastic body or the like.

[0011]

According to the present invention, in a rack for electronic control, in which a large number of printed circuit boards mounted with electronic parts of electronic equipment such as a semiconductor test apparatus are mounted, a windshield plate is provided in accordance with an empty slot of the printed circuit board. Can be appropriately set to easily prevent the cooling air from leaking.

[Brief description of drawings]

FIG. 1 shows a cooling wind leakage prevention measure using a windshield plate made of a corrugated sheet according to the present invention.

FIG. 2 shows a measure for preventing cooling air leakage using a windshield plate made of a rigid plate according to the present invention.

FIG. 3 shows a typical example of conventional cooling air leakage prevention using a dummy substrate.

[Explanation of symbols] 1 windshield rubber 2 damy substrate 3 empty slot 4 electronic component 5 printed circuit board 6 cooling wind 7 windshield plate rail tension 8, 11 windshield plate rails 9, 10, 12 , 13 windshield plate

Claims (2)

[Claims] 1. A leak of cooling air (6) in an empty slot (3) of a printed circuit board (5) in an electronic control rack having a large number of printed circuit boards (5) mounted with electronic components (4). In order to prevent the above, a windshield plate (9) having corrugated plates for preventing leakage of cooling air by sealing a space of an arbitrary width generated by an empty slot (3),
(10) is provided, The leakage windshield plate of the cooling wind of the electronic device part characterized by the above-mentioned. 2. A rigid plate (12), instead of the windshield plates (9), (10) of the corrugated plate having irregularities of claim 1.
(13) A leakage windshield plate for cooling air of an electronic device section, which is provided.