JPS5852755Y2 - Shelf structure of electronic circuit unit - Google Patents

Description

[Detailed description of the invention] This invention is an electronic circuit unit with enhanced heat dissipation function or cooling capacity for mounting a large number of electronic circuit units (hereinafter simply referred to as units) on an equipment rack in electronic equipment such as telephone exchanges. Regarding improvements to the shelf structure.

FIG. 1 is a simplified front view showing such a conventional equipment rack configuration.

The main configuration will be explained with reference to figures.

In the figure, 1 is a fruit branch, 2 is a shelf whose left and right ends are supported by beams, and 3 is a unit mounted in parallel with the shelf 2, which includes multiple electronic circuit packages (hereinafter simply referred to as packages). (see 8 in FIG. 2) is housed therein, and the unit constitutes a rack mounting unit.

A power cable 4 necessary for unit operation is connected to the front side of the unit via a connector.

In such rack systems, the operating temperature is set, for example, within a range of io to 50 DEG C. throughout the year in order to stabilize unit operation and extend the life of components, integrated circuits, etc.

For this purpose, a convection space is provided at the top of the panel rack or at an appropriate location (see figure 5) to efficiently exhaust the heat lost inside the rack to the outside space, and when necessary, a fan is installed at that location. It was used as a cooling means for various functional units within the system.

However, such a uniform method does not provide sufficient cooling capacity for each unit, and especially for units with high operating temperatures, there are constraints on mounting conditions (installation position, etc.), making mounting design difficult. It is coming.

The purpose of the present invention was to eliminate such disadvantages and to provide a corresponding cooling capacity to each unit as shown below.

Its characteristic feature is a shelf structure of the electronic unit in which each electronic circuit unit mounted on an overhead wire is provided with a convection transparent plate for cooling or a fan motor in conjunction with the transparent plate.

Hereinafter, the main structure of the present invention will be explained with reference to the drawings.

FIG. 2 is a perspective view of the unit, and FIG. 3 is a functional explanatory diagram of the structure shown in FIG.

Common functional parts in each figure are given the same number.

Further, the arrows shown indicate the air circulation paths.

This is an example of a main part configuration of a different number of storage packages (8 shown in the figure) from A and A in the figure.

It is also shown that the mounting position of the convection-transmitting plate 9 can be freely changed to front or rear.

The bottom surface 6 forming the casing plate of the unit 3 is provided with a large number of ventilation passages T with wide openings, and the upper part of the casing of the unit 3 has a convection transparent plate 9 with an appropriate slope and an outflow opening surface 10 as shown in the figure. Integrate and combine with the casing.

When the unit 3 having such a configuration is fully assembled and the package 8 is fully mounted, the front, rear, left, and right sides are sealed, so as the temperature rises, the airflow flows from the bottom to the top.
As shown in FIG. 3, air is drawn in from the back side of the rack and discharged to the front side of the rack depending on the orientation of the convection plate 9.

Further, if the function is to increase the operating temperature of the housing package of the unit 3, a fan motor 11 shown by a dotted line in FIG. 3 may be provided inside the outflow opening surface 10.

Although the unit width 12 varies depending on the number of packages stored, if the standard number is selected appropriately, the convection guide plates etc. can be standardized, which is convenient for manufacturing.

In the embodiments cited in the description, the shapes of the numerous ventilation passages T, etc. are merely examples.

According to the shelf structure of the present invention described in detail above, cooling capacity commensurate with the electronic circuit unit is provided without deteriorating the mounting function of the unit, and the degree of freedom in equipment rack mounting design is increased. It has a unique structure that can meet requests and has great practical effects.

[Brief explanation of drawings]

Figure 1 is a simplified front view of a panel mounted on a conventional racking device;
The figure is a perspective view showing the main structure of the present invention, and FIG. 3 is a functional explanatory diagram of the structure shown in FIG. In the figure, 3...Electronic circuit unit (unit),
6... Bottom plate of the unit, T... Ventilation window, 8... Package that stores the unit, 9.
...Convection induction plate, 11...Fan motor.

Claims (1)

[Scope of utility model registration request] In an electronic device in which a plurality of electronic circuit units are mounted in parallel on a shelf, each unit mounted on an overhead wire is provided with a cooling convection transparent plate or a fan motor in conjunction with the transparent plate. Features a shelf structure of the electronic circuit unit.