JPH073015U - Power supply cooling structure - Google Patents

Abstract

(57) [Summary] [Purpose] Naturally cool the power supply unit without using a cooling fan. [Structure] An accommodating part 4 is constituted by an extension part 2 and a top cover 3 which extend backward from the upper side of a case rear surface 11 provided with a connector 6 in an eaves-like shape, and a power supply device 5 is installed inside the accommodating part 4. Further, an air inlet 21 is provided in the extension portion 2 corresponding to the bottom surface of the storage portion 4, and an air outlet 31 is provided in the top cover 3 corresponding to the ceiling portion.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a cooling structure for a power supply device in an information processing device such as a personal computer or a terminal device.

[0002]

[Prior art]

 Generally, information processing devices such as personal computers are equipped with an electric component and a power supply unit in the same case, and a cooling fan is installed to force the power supply so that heat generated from the power supply unit does not affect other electric components. Cooling the device is performed. An example of this is disclosed in Japanese Utility Model Laid-Open No. 4-12697. This is because the air inlet is provided on one side of the case, the air outlet is provided on the other side, the heat generating parts are provided on the outlet side in the case, and the other electric parts are installed in the case. It is installed on the side and forcibly cools the parts inside the case with a cooling fan.

[0003]

[Problems to be solved by the device]

 In recent years, information processing devices have become smaller and smaller, and the electrical components inside the case are mounted at high density, making the structure more susceptible to thermal influences. Therefore, forced air cooling by a cooling fan is required, but it also hinders the downsizing of the device in order to secure a place to install the cooling fan.

[0004] Although quietness is required for information processing devices used in libraries and hospitals, there is a problem that noise generated by a cooling fan adversely affects the surrounding environment. Therefore, the present invention provides a cooling structure for a power supply device that efficiently cools the power supply device by natural convection, thereby eliminating the need for a cooling fan, thereby reducing the cost, downsizing the device, and reducing noise. It is a thing.

[0005]

[Means for Solving the Problems]

 According to the present invention, the upper part of the rear part of the case containing the electric parts is extended rearward in an eaves-like shape to form a storage part, and an air intake port is provided on the bottom surface of the storage part so that the ceiling part of the storage part has an air outlet. Is provided, and the power supply device is arranged inside the storage section.

In addition, a connector may be provided on the rear surface of the case below the storage portion. Then, the above-mentioned problem is solved by disposing the power supply device in a position higher than the electric component in the case.

[0007]

[Action]

 According to the present invention, convection occurs due to the heat generated by the power supply member arranged in the storage part, and the air that has entered through the intake port on the bottom of the storage part removes the heat of the power supply member and exits from the discharge port on the ceiling efficiently. Cool the power supply members. Further, the storage portion extending like a canopy behind the case acts as a blind cover that covers the connector provided below the storage portion.

[0008]

【Example】

 The present invention will be described with reference to the drawings. FIG. 5 is a side view showing a terminal device of an embodiment, and the left side of the drawing is the front surface. FIG. 1 is a cross-sectional view showing the main part of the main body of the terminal device, and FIG. 2 is a plan view of the main body with the CRT display removed, in which the upper side is the front side. FIG. 3 is a cross-sectional view of a main part showing a power supply device and a suction port inside the main body, and FIG. As shown in FIG. 5, the terminal device 50 includes a CRT display 51, a main body 52, and a keyboard (not shown).

As shown in FIG. 1, a connector 6 into which a plug 10 of a cable 9 for connecting to a host device is plugged in is provided on the rear surface 11 of the case 1 which constitutes the main body 52. The housing 2 is composed of an extension 2 extending from the case 6 in the shape of an eaves on the upper side of the connector 6 and a zinc die-cast top cover 3. A power supply device 5 in which a power source member such as a transformer or a transistor which is a heat generating component is packaged is housed inside the housing portion 4, and is fixed to the extension portion 2 by a spacer 8. Reference numeral 7 denotes a board on which various electric parts (not shown) are mounted, and is provided at a position lower than the power supply device 5 inside the case 1.

Further, as shown in FIG. 2, a large number of outlets 31 are provided behind the top cover 3 around the ceiling portion of the storage unit 4, and are heated by the power supply device 5 through the outlets 31. Exhausted air to the outside of the device. Then, as shown in FIG. 3, an intake port 21 for taking in cooling air is provided in the extension portion 2 fixed to the power supply device 5, that is, the bottom surface of the storage portion 4.

In the terminal device 50 configured as described above, convection occurs when the air around the power supply device 5 is warmed, and the warmed air, that is, the heat of the power supply device 5 is removed. The expanded air rises as shown by arrow A in FIG. 1 and is discharged to the outside of the main body 52 through the discharge port 31. On the other hand, the outside air flows through the inlet 21 by convection into the storage portion 4 as indicated by the arrow B, and acts to remove the heat of the power supply device 5.

As described above, the power supply device 5 is efficiently cooled by the natural airflow that flows through the inside of the storage portion 4 from the bottom to the top. Moreover, since the power supply device 5 is arranged higher than the substrate 7 by one step, the thermal influence on the electric components mounted on the substrate 7 can be further reduced. Further, if the top cover 3 is made of die cast material having good heat radiation, it acts as a heat radiating member itself, and a better cooling structure can be configured.

By the way, as can be seen by comparing FIG. 4 and FIG. 2, the plug 10 connected to the connector 6 is covered by the top cover 3 so that it can be seen not only from the front of the terminal device 50 but also from the side and the rear. Since it becomes invisible, the appearance is extremely good.

[0014]

[Effect of device]

 According to the present invention, since a cooling fan is not required, it is extremely effective in reducing the cost and downsizing the device. Further, by eliminating the cooling fan, which is a noise source, it is possible to realize a highly quiet information processing device. This makes it possible to introduce the information processing device into a quiet environment.

[0015] Furthermore, since it is not necessary to additionally provide a blind cover for covering the plug connected to the connector, the cost can be reduced here as well, and it is a place where people can see it from the front and back of the device such as a hospital reception counter. However, the appearance is extremely good.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of essential parts showing a cooling structure of a power supply device in an embodiment.

FIG. 2 is a plan view showing a terminal device body of the embodiment.

FIG. 3 is a cross-sectional view of essential parts showing the inside of the terminal device body of the embodiment.

FIG. 4 is a cross-sectional view of essential parts showing a mounting state of a plug on a connector in an example.

FIG. 5 is a side view showing the terminal device of the embodiment.

[Explanation of symbols]

 1 Case 2 Extension 3 Top Cover 4 Storage 5 Power Supply 6 Connector 21 Inlet 31 Outlet

Claims (3)

[Scope of utility model registration request] 1. An upper part of a rear part of a case containing an electric component is extended rearward in an eaves shape to provide a storage part, and an air inlet is provided on a bottom surface of the storage part, and an air intake is provided on a ceiling part of the storage part. A cooling structure for a power supply device, characterized in that a power supply device is arranged inside the storage part. 2. The cooling structure for a power supply device according to claim 1, wherein a connector is provided on the rear surface of the case below the housing portion. 3. The cooling structure for a power supply device according to claim 1, wherein the power supply device is arranged at a position higher than the electric components in the case.