JPH054571U - Electrical equipment - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide an electric device which has a relatively small structure and can effectively suppress an internal temperature rise. [Constitution] In an electric device in which an inner unit having a heat generating portion is housed in a case so as to be able to be taken in and out, a heat radiating member is directly coupled to a main heat generating portion of the inner unit, and the inner unit is accommodated in the case. In this state, a hole for exposing a part of the heat dissipation member to the outside is provided.

Description

[Detailed description of the device]

[0001]

[Industrial application]

 The present invention relates to an electric device, and more particularly, to a heat dissipation structure of an electric device in which an inner unit having a heat generating portion is housed in a case so as to be removable.

[0002]

[Prior Art]

 For example, an industrial recorder is constructed so that the inner unit can be pulled out and accommodated in the case. Such recorders are often mounted on the instrument panel, but there is a strong tendency to reduce the depth dimension of the instrument panel to make the entire instrument panel smaller. However, the depth dimension of the recorder, including the case, should be a certain length in order to secure a certain heat radiation area in the case when considering the heat generation amount of the internal unit housed in the case. You will need it. Therefore, as a method of reducing the depth dimension (case capacity) of the recorder, it is conceivable to provide many holes for heat dissipation in the case and install a heat dissipation fan that diffuses heat to the outside by convection.

[0003]

[Problems to be solved by the device]

 However, in the case of this structure, a large amount of dust and dirt will enter the inside of the case, which may impair the reliability of the product depending on the installation environment of the recorder. Also, in the case of this structure, depending on the installation environment, gas that is harmful to the recorder will be forcibly taken inside, and it is hardly used in the current industrial recorders.

The present invention focuses on such a problem, and an object thereof is to provide an electric device having a relatively small structure and capable of effectively suppressing an internal temperature rise. .

[0005]

[Means for Solving the Problems]

 The present invention to achieve such an object is an electric device in which an inner unit having a heat generating portion is housed in a case so as to be able to be taken in and out. A hole is provided in the space for exposing a part of the heat dissipation member to the outside in a state where the inner unit is accommodated.

[0006]

[Action]

 The temperature generated by the internal heat is efficiently diffused to the outside through the heat dissipation member exposed from the case.

[0007]

【Example】

 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 and FIG. 2 are explanatory views of the configuration of one embodiment of the present invention, showing an example of an industrial servo pen recorder, and FIG. 1 stores the inner unit in a case. FIG. 2 shows a state in which the internal unit is pulled out from the case. In the figure, 1 indicated by a chain double-dashed line is an inner unit of the recorder, 2 is a case for accommodating the inner unit 1 so as to be able to be taken in and out, and 3 is a panel to which the case 2 is attached. Reference numeral 4 denotes a main heat generating portion of the inner unit 1 including a pencer motor unit, to which a heat radiating member 5 is directly connected. On the back surface of the case 2, there is provided a hole 6 for exposing a part of the heat dissipation member 5 to the outside in a state where the inner unit 1 is accommodated, and a gap between the heat dissipation member 5 and the hole 6 is provided on the inner periphery thereof. A seal member 7 made of an elastic member is attached to cover the above to provide a dustproof structure.

Generally, the power consumption of a servo pen recorder is dominated by a pen driving motor and a motor driver. In particular, when recording with large fluctuations in flow rate, etc., the amount of heat generated becomes the largest because the pen servo becomes unbalanced. Therefore, in the present invention, the heat dissipation member 5 is directly attached to the rear of the pen motor unit 4 to minimize the heat resistance, and the heat generated by the motor coil and the driver is transferred to the heat dissipation member 5 for cooling.

The heat radiation member 5 attached to the rear of the pen motor unit 4 is provided on the back surface of the case 2 as shown in FIG. 1 when the inner unit 1 is housed in the case 2. It is formed so as to protrude from the hole 6 formed therein. The gap between the heat radiating member 5 and the hole 6 is hermetically closed by a seal member 7 to prevent dust and dirt from entering the case 2.

On the other hand, when maintaining or calibrating the inner unit 1, as shown in FIG. 2, the heat radiating member 5 is pulled out from the front surface of the case 2.

With this structure, the heat dissipation member 5 projects from the case 2 and is exposed to the outside air, so that a good heat dissipation effect is obtained, and as a result, the depth of the case is deeper than in the conventional case. Even if the dimensions are shortened, the rise in internal temperature can be sufficiently suppressed, and the case 2 can be thoroughly downsized. In addition, since it can be made into a dust-proof case structure, the conditions of the operating environment can be considerably eased compared with the case where a hole for heat dissipation is provided in the case. Further, cost reduction can be achieved by downsizing the case 2 and omitting a large number of holes for heat dissipation.

In the above embodiment, the structure in which the inner unit 1 is pulled out from the front surface of the case 2 has been described, but it is also applied to a structure in which the inner unit 1 is hinged to the opening of the case 2 and is swung. It is possible. In addition, although the embodiment described the servo pen recorder, it is also effective for radiating the stepping motor for driving the carriage of the dot recording recorder, and further for radiating various electric equipment other than industrial instruments. It can also be used as a mechanism.

[0013]

As described above, according to the present invention, it is possible to realize an electric device having a relatively small structure and effectively suppressing an internal temperature rise and obtaining a sufficient heat radiation effect.

[Brief description of drawings]

FIG. 1 is a structural explanatory view of an embodiment of the present invention, showing a state in which an inner unit is housed in a case.

FIG. 2 is a structural explanatory view of an embodiment of the present invention, showing a state in which the inner unit is pulled out from the case.

[Explanation of symbols]

 1 Internal unit 2 case 3 Panel 4 Heat generating part 5 Heat dissipation member 6 Hole 7 Seal member

Claims (1)

[Claims for utility model registration] [Claim 1] An internal unit having a heat generating part can be inserted and removed.
In an electric device housed in a casing, a heat radiating member is directly coupled to the main heat generating portion of the inner unit, and a hole for exposing a part of the heat radiating member to the outside with the inner unit housed in the case. An electric device characterized by being provided with.