JPH062782U - Cooling structure of printed wiring board - Google Patents

Abstract

(57) [Summary] [Purpose] The plate can be attached and removed without removing the hose.
(EN) Provided is a printed wiring board cooling structure capable of easily cooling a printed wiring board. A case 2 having guide rails 3 facing each other vertically and connected to pipes 4a and 4b through which a refrigerant flows, and a case 2 detachably disposed along the guide rails 3 in the case 2.
A plate 6 having coolant passages 8 on opposite sides of the upper and lower sides and a printed wiring board 1 fixed on at least one surface, and hoses 14a, 1 for connecting the passages 8 of the plate 6 and the case 2 to each other.
4b, in the cooling structure for a printed wiring board, the hoses 14a, 14b are made of a soft material, and grooves 11a, 11b, 12a for passing the hoses 14a, 14b along the guide rail 3 to the plate 6 or the case 2 are formed. 1
2b is provided.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a printed wiring board cooling structure.

[0002]

[Prior art]

 FIG. 3 is a perspective view of a conventional printed wiring board cooling structure. In the figure, reference numeral 1 is a printed wiring board on which electronic components such as semiconductors are mounted, and 2 is a case in which the printed wiring board 1 is housed. Reference numerals 4a and 4b are pipes connected to a flow path 5a provided in the case 2 through thin tubes 5 provided at several places. The pipe 4a sends a refrigerant from a cooling device (not shown) to the case 2 to form a pipe 4b. Is to send the refrigerant from the case 2 to the cooling device.

Reference numeral 6 denotes a plate that is inserted into the case 2 along the guide rails 3, and is made of a material having good heat conductivity such as aluminum, and has a refrigerant flow path 8 on the upper and lower opposite sides. Cooling portions 7a and 7b are provided, and the printed wiring board 1 is fixed to at least one side surface. Reference numerals 9a and 9b are cooling hoses for connecting one end of the flow paths 8 of the cooling units 7a and 7b and the flow path 5a of the case 2, and 10 is a connecting pipe for connecting the other ends of the flow paths 8 of the cooling units 7a and 7b. .

The connector 1 a mounted on the printed wiring board 1 is connected to the connector 2 b arranged on the backboard 2 a of the case 2.

When cooling the printed wiring board 1 in the case 2 configured as described above, the refrigerant sent from the cooling device to the pipe 4 a is sent into the flow path 5 a of the case 2 through the thin tube 5. It is supplied to the flow path 8 of the cooling unit 7a through the cooling hose 9a and is supplied to the flow path 8 of the cooling unit 7b through the connecting pipe 10. At this time, the coolant passes through the flow paths 8 of the cooling units 7a and 7b while cooling the printed wiring board 1 and the plate 6 which are heated by the heat from the electronic components mounted on the printed wiring board 1. Then, the heated refrigerant is sent to the flow path 5a of the case 2 through the cooling hose 9b, and is further discharged to the cooling device through the pipe 4b. In this way, the coolant is circulated to cool the plate 6 in the case 2, and thus the printed wiring board 1.

Further, there is an invention disclosed in Japanese Patent Laid-Open No. 63-124599, which is similar to the cooling structure for a printed wiring board as described above. In this invention, a pipe through which a refrigerant flows and a cold plate in which a printed wiring board is closely fixed are connected via a hose, and the refrigerant is directly passed through the cold plate to cool the heat of the printed wiring board.

[0007]

[Problems to be solved by the device]

 As described above, the conventional printed wiring board cooling structure can reliably cool the printed wiring board 1 housed in the case 2 by circulating the refrigerant through the case 2. However, for example, when the printed wiring board 1 is pulled out from the case 2 for electrical adjustment, the cooling hoses 9a and 9b are removed from the flow paths 8 of the cooling units 7a and 7b, and the plate 6 is guided along the guide rail 3. Since the adjustment and the like were performed after the cooling hose 9a and 9b were pulled out, there was an inconvenience that the refrigerant leaked when the cooling hoses 9a and 9b were inserted and removed, and the adjustment and the like took time and effort.

Further, in order to cool the printed wiring board 1 being adjusted, another cooling device is connected to the flow paths 8 of the cooling units 7a and 7b, so that it is necessary to always prepare another cooling device. When the printed wiring board 1 is adjusted by the above method and the printed wiring board 1 is cooled, it is necessary to bring another cooling device, which is inconvenient.

Further, in order to prevent the cooling hoses 9a and 9b from being removed from the flow paths 8 of the cooling units 7a and 7b, it is conceivable to make the cooling hoses 9a and 9b long. If the length of 9b is increased, a large space for accommodating the cooling hoses 9a and 9b must be provided in the case 2, and the case 2 may be large.

The present invention has been made to solve the above problems, and the plate can be attached and detached without removing the hose, and the printed wiring board can be easily cooled. The purpose is to provide.

[0011]

[Means for Solving the Problems]

 The cooling structure for a printed wiring board according to the present invention includes a case having guide rails facing each other vertically, to which a pipe through which a coolant flows is connected, and a case that is detachably arranged along the guide rails in the case. In a cooling structure for a printed wiring board, which includes a plate having a refrigerant flow path on the opposite side and a printed wiring board fixed on at least one surface, and a hose connecting the flow path of the plate and the case, a hose is used. It is made of a soft material and has a groove for passing a hose along the guide rail in the plate or case.

[0012]

[Action]

 When electrically adjusting and cooling the printed wiring board, pull out the plate on which the printed wiring board is fixed along the guide rail. At this time, the hose connected to the case and the plate through the groove provided in the case or the plate is extended with the plate without being removed. Then, the coolant flowing in the case is circulated to cool the plate and the printed wiring board for adjustment.

[0013]

【Example】

 FIG. 1 is a perspective view of an embodiment of the present invention. The same parts as those in the conventional example described with reference to FIG. 3 are designated by the same reference numerals, and the description thereof will be omitted. In the figure, 11a and 11b are grooves having a concave cross section provided substantially at the center of the cooling portion 7a and 7b of the plate 6, and 12a and 12b are cross sections provided on the plate 6 so as to face the grooves 11a and 11b. Through grooves 13a and 13b are formed by the groove 11a and the groove 12a and the groove 11b and the groove 12b. 14a and 14b are hoses made of a soft material, 15 is a connecting pipe, and the hoses 14a and 14b pass through the passages 5a of the case 2 and one end of the passages 8 of the cooling units 7a and 7b through the through passages 13a and 13b. And the connection pipe 15 connects the other ends of the flow paths 8 of the cooling units 7a and 7b.

When the printed wiring board 1 in the case 2 configured as described above is cooled, the refrigerant sent from the cooling device to the pipe 4 a is sent into the flow path 5 a of the case 2 through the narrow tube 5, and the hose It is supplied to the flow path 8 of the cooling unit 7a through 14a, and is supplied to the flow path 8 of the cooling unit 7b through the connecting pipe 15. At this time, the coolant passes through the flow paths 8 of the cooling units 7a and 7b while cooling the printed wiring board 1 and the plate 6 which are heated by the heat from the electronic components mounted on the printed wiring board 1. Then, the heated refrigerant is sent to the flow path 5a of the case 2 through the hose 14b and discharged to the cooling device through the pipe 4b. Then, the coolant is circulated in this way to cool the plate 6 and the printed wiring board 1 in the case 2.

In addition, for example, when cooling the printed wiring board 1 during electrical adjustment, first, as shown in FIG. 2, the connector 2b of the backboard 2a and the connector 1a of the printed wiring board 1 are removed and the guide rail 3 is removed. Pull out the plate 6 along. At this time, the hoses 14a and 14b are also pulled out together with the plate 6 and can be extended to the length passing through the through passages 13a and 13b without being removed from the flow passage 8 of the cooling portions 7a and 7b. Then, the connector 2b of the backboard 2a and the connector 1a of the printed wiring board 1 are electrically connected, for example, via an extension sheet (not shown), and the cooling medium is circulated as described above so as to circulate the plate 6 and the printed wiring. Adjustments and the like are performed while cooling the plate 1. After the adjustment, the hoses 14a and 14b are smoothly stored in the through passages 13a and 13b while the plate 6 is inserted into the case 2.

In the above embodiment, the grooves forming the through passages 13a and 13b are provided in both the case 2 and the plate 6, but they may be provided in either the case 2 or the plate 6.

[0017]

[Effect of device]

 As described above, the present invention includes a case having guide rails which face each other vertically and connected to a pipe through which a refrigerant flows, and a case which is detachably arranged along the guide rails in the case and has refrigerant on opposite sides of the upper and lower sides. In a cooling structure for a printed wiring board, which includes a plate having a flow path of at least one side to which a printed wiring board is fixed, and a hose connecting the flow path of the plate and the case, the hose is made of a soft material. In addition, the plate or case has a groove for passing the hose along the guide rail, so that a long hose for passing the refrigerant can be stored compactly and the plate can be easily attached and detached without removing the hose. In addition, the printed wiring board can be cooled without using another cooling device in the electrical adjustment of the printed wiring board.

[Brief description of drawings]

FIG. 1 is a perspective view of an embodiment of the present invention.

FIG. 2 is an explanatory view of the operation of the embodiment of the present invention.

FIG. 3 is a perspective view of a conventional printed wiring board cooling structure.

[Explanation of symbols]

 1 printed wiring board 2 case 3 guide rail 4a, 4b pipe 5 thin tube 5a, 8 flow path 6 plate 7a, 7b cooling part 11a, 11b groove 12a, 12b groove 13a, 13b through path 14a, 14b hose 15 connecting pipe

Claims (1)

[Scope of utility model registration request] 1. A case, which has guide rails facing each other in the vertical direction and to which a pipe through which a refrigerant flows is connected, and a case which is detachably disposed along the guide rails in the case and has a refrigerant flow on opposite sides of the upper and lower sides. In a cooling structure for a printed wiring board, comprising a plate having a passage and a printed wiring board fixed on at least one surface, and a hose connecting the flow passage of the plate and the case, the hose is made of a soft material and A cooling structure for a printed wiring board, wherein the plate or case is provided with a groove for passing the hose along the guide plate.