TWI736470B - Heat dissipation device - Google Patents

Abstract

The present invention provides a heat dissipation device suitable for a PDA, comprising: a casing; and several heat sinks, which are accommodated in the casing, and each of the heat sinks is arranged and combined to form several ventilation channels in the casing in vivo. The chimney design through the heat sink can effectively improve the heat dissipation efficiency of the PDA.

Description

Heat sink

The present invention relates to a heat dissipation device, and particularly relates to a heat dissipation device that can improve the heat dissipation efficiency of a tablet computer.

With the doubling of the performance and processing speed of handheld mobile devices, the internal electronic components will also generate a high thermal response, which is transmitted to the entire handheld device, causing the user to burn hands and the electronic components will burn out due to overheating. It is necessary to de-heat the internal electronic components. Current handheld mobile devices usually use a middle frame or a casing as the base to mount various electronic components and touch screens. The middle frame or casing is usually an integrated structure through machining. Therefore, the company adds auxiliary heat transfer elements such as copper sheets, graphite sheets, thin heat pipes, two-phase flow heat exchange units, etc. inside the mobile device to diffuse and dissipate the heat generated by the internal electronic components or guide it to the remote end. Antipyretic heat conduction.

Therefore, how to effectively improve the heat dissipation efficiency of the handheld device is the primary improvement.

The invention provides a heat dissipation device, which can generate a chimney effect through a chimney-type heat dissipation channel and increase the efficiency of heat dissipation.

The present invention provides a heat dissipation device, including: a housing; and a plurality of heat sinks, which are accommodated in the housing, and each of the heat sinks is arranged and combined to form a plurality of ventilation channels in the housing.

In an embodiment of the present invention, the above-mentioned housing further includes an air inlet and an air outlet.

In an embodiment of the present invention, the above-mentioned ventilation channel passes through the air inlet and the air outlet.

In an embodiment of the present invention, the above-mentioned air inlet is provided on the lower end surface of the casing.

In an embodiment of the present invention, the above-mentioned air outlet is provided on the upper end surface of the casing.

In an embodiment of the present invention, the above-mentioned arrangement of the air inlet and the air outlet is based on the principle of hot air rising.

In an embodiment of the present invention, the above-mentioned heat sinks are arranged and combined in a vertical manner.

In an embodiment of the present invention, the above-mentioned radiating fins form a plurality of chimney-type ventilation channels in the housing

In an embodiment of the present invention, the aforementioned heat dissipation device is internally connected to a tablet computer.

The present invention provides a heat dissipation device suitable for a tablet computer, comprising: a casing arranged on the back casing of the tablet computer, the casing is provided with an air inlet and an air outlet; and a plurality of heat sinks for accommodating In the casing, each of the radiating fins is arranged and combined to correspond to the air inlet and the air outlet to form a plurality of ventilation channels in the casing.

In the present invention, the heat sink and the system form a closed system space, and another system casing is added outside the heat sink, so that the space outside the heat sink is separated from the system. In this way, the opening of the system in the heat sink area does not affect the waterproof and dustproof of the system, and the size of the opening is not restricted by safety regulations. And opening holes in the upper and lower areas of the heat sink can produce a chimney effect and increase the heat dissipation capacity.

In order to make the above-mentioned features and advantages of the present invention more comprehensible, the following specific examples are given in conjunction with the accompanying drawings, which are described in detail as follows.

FIG. 1 is a schematic diagram of the appearance of the heat sink of the present invention. In FIG. 1, the heat sink is suitable for a tablet computer. The heat sink includes a housing 110 and a heat sink set 120. The housing 110 includes an air inlet 111 and an air outlet 112, and the heat sink 120 is accommodated in the heat sink. In the housing, each of the radiating fins in the heat radiating fin group 120 is arranged perpendicular to each other two by one, and a plurality of ventilation channels are formed in the housing 110.

In this embodiment, the ventilation channel passes through the air inlet and the air outlet.

In this embodiment, the air inlet is arranged on the lower end surface of the casing.

In this embodiment, the air outlet is provided on the upper end surface of the casing.

In this embodiment, the setting of the air inlet and the air outlet is based on the principle of hot air rising.

In this embodiment, the radiating fins form a plurality of chimney-type ventilation channels in the housing.

In this embodiment, the heat sink is internally connected to a tablet computer.

2 is a cross-sectional view of the combination of the heat sink and the tablet computer of the present invention. As shown in FIG. 2, the tablet computer has a main system housing 210 to cover the screen 220, the motherboard 230, the processor 240 and other components.

Therefore, the heat sink is integrated on the non-screen end surface of the tablet computer, and the heat is transmitted through the chimney ventilation channel of the heat sink set 120 in the housing 110 of the heat sink for heat dissipation. The housing 110 in the area of the heat sink set 120 is not open. It affects the waterproof and dustproof of the tablet, and the size of the opening is not restricted by safety regulations. In addition, holes are opened in the upper and lower areas of the heat sink group 120, which can produce a chimney effect, and increase the heat dissipation capacity according to the principle of hot air rising

Please refer to FIGS. 3, 4, and 5 at the same time. FIG. 3 is a schematic diagram of the air inlet of the heat sink of the present invention, FIG. 4 is a schematic view of the air outlet of the heat sink of the present invention, and FIG. 5 is a schematic diagram of an embodiment of the heat sink of the present invention .

In FIG. 5, it is mainly used to illustrate that when the tablet is combined with an external keyboard 500, a fan 510 can be provided on the external keyboard 500 to blow the heat generated by the operation of the external keyboard 500 to the heat sink, and the heat sink housing 110 The air inlet 111 enters through the chimney ventilation channel of the heat sink set 120 and exits from the air outlet 112 of the heat sink housing 110 to further improve the heat dissipation effect.

In summary, the main feature of the present invention is that the heat sink and the housing form a closed system space, and another system shell is added outside the heat sink to separate the space outside the heat sink from the system, and the system can be opened in the heat sink area. , Does not affect the waterproof and dustproof of the system, and can produce chimney effect heat dissipation in the heat sink area, increasing the overall heat dissipation capacity.

Although the present invention is disclosed in the foregoing embodiments as above, it is not intended to limit the present invention. Anyone who is familiar with similar skills, without departing from the spirit and scope of the present invention, makes changes and modifications equivalent to replacements, still belongs to the present invention. Patent protection scope

110: shell 111: air inlet 112: air outlet 120: heat sink group 210: System shell 220: screen 230: Motherboard 240: processor 500: External keyboard 510: Fan

FIG. 1 is a schematic diagram of the appearance of the heat sink of the present invention. 2 is a cross-sectional view of the combination of the heat sink and the tablet computer of the present invention. Fig. 3 is a schematic diagram of the air inlet of the heat sink of the present invention. Fig. 4 is a schematic diagram of the air outlet of the heat dissipation device of the present invention. Fig. 5 is a schematic diagram of an embodiment of the heat dissipation device of the present invention.

110: shell

111: air inlet

112: air outlet

120: heat sink group

Claims (10)

A heat dissipation device suitable for a tablet computer includes: an outer casing; and a plurality of heat sinks, which are accommodated in the casing, and each of the heat sinks is arranged and combined to form a plurality of ventilation channels in the casing, Wherein, the tablet is combined with an external keyboard, and a fan is arranged on the external keyboard. The fan blows the heat generated by the operation of the external keyboard to the heat sink, so that the heat is dissipated through the heat sinks. In the heat dissipation device described in item 1 of the scope of patent application, the casing further includes an air inlet and an air outlet. For the heat dissipation device described in item 2 of the scope of patent application, the ventilation passages pass through the air inlet and the air outlet. In the heat dissipation device described in item 2 of the scope of patent application, the air inlet is arranged on the lower end surface of the casing. In the heat dissipation device described in item 2 of the scope of patent application, the air outlet is arranged on the upper end surface of the casing. For the heat dissipating device described in item 2 of the scope of patent application, the setting of the air inlet and the air outlet is based on the principle of hot air rising. In the heat dissipation device described in item 1 of the scope of patent application, the heat dissipation fins are arranged and combined in a vertical manner. As for the heat dissipation device described in item 1 of the scope of patent application, the heat dissipation fins form a plurality of chimney ventilation channels in the casing. The heat dissipating device described in item 1 of the scope of patent application, wherein the heat dissipating device is internally connected to a tablet computer. A heat dissipation device suitable for a tablet computer, comprising: a casing arranged on the back casing of the tablet computer, the casing is provided with an air inlet and an air outlet; and a plurality of heat sinks, which are accommodated in the casing In the body, each of the radiating fins is arranged and combined to correspond to the air inlet and the air outlet to form a plurality of ventilation channels in the housing, wherein the flat panel is combined with an external keyboard, and a fan is arranged on the external keyboard, The fan blows the heat generated by the operation of the external keyboard to the heat dissipating device, so that the heat enters from the air inlet of the heat dissipating device, passes through the ventilation channels of the heat sinks, and is discharged from the air outlet of the heat dissipating device .

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