JP2008103637A - Wireless communication base station apparatus and method of preventing dust invasion - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a wireless communication base station apparatus and a method of preventing dust invasion, which prevent invasion of dust that comes with wind into the apparatus in a wireless communication base station apparatus installed outside. <P>SOLUTION: The wireless communication base-station apparatus 1 installed outside includes a fan means 2 for cooling the inside of the apparatus, an exhaust port for exhausting the exhaust air flow generated by driving the fan means 2, and a flap means 4 installed close to the exhaust opening and capable of opening or closing in response to the influence of the wind pressure. The flap means 4 operates itself to open the exhaust port in response to the influence of the wind pressure due to the exhaust air flow when the wind pressure due to the wind blowing from the outside of the wireless communication base station apparatus 1 is smaller than the wind pressure due to the exhaust air flow generated by driving the fan means 2, and operates itself to close the exhaust port in response to the influence of the wind pressure due to the wind blowing from the outside when the wind pressure due to the wind blowing form the outside of the wireless communication base station apparatus 1 is larger than the wind pressure due to the exhaust air flow generated by driving the fan means 2. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a wireless communication base station apparatus and a dust intrusion prevention method provided with a mechanism that is installed outdoors and prevents intrusion of dust flying on wind.

  Generally, wireless communication base station apparatuses installed outdoors are installed in various places such as industrial cities, rural areas, mountainous areas, coastal areas, highway utility poles, steel towers, and rooftops of buildings. For this reason, the size of the housing is required to be limited, and a sufficient distance from the exhaust port to the drive fan (cooling device inside the device) cannot be secured. Therefore, when a gust of wind blows outdoors, very small sand, dust, debris, insects, etc. (hereinafter referred to as dust) flying on the wind will enter the device from the exhaust port and accumulate. This causes a problem that the drive fan stops temporarily. Furthermore, if dust collected inside the device falls between the fins of the drive fan and the mold and accumulates, when the temporarily stopped fan tries to drive again, the gap between the fins of the drive fan and the mold The problem is that the drive fan stops completely due to the influence of the dust that is bitten.

  For example, as shown in FIG. 3, the wireless communication base station apparatus 1 is a small communication device installed outdoors, and various electronic components (not shown) and these electronic components are cooled inside the housing. And an exhaust port 3 for discharging an exhaust flow generated by the cooling operation of the drive fan 2 at a predetermined position of the housing. This exhaust port 3 is protected by a net or louver to prevent dust 6 from entering the inside of the device, but it is completely possible that dust coming from a gust of wind generated during a seasonal wind or typhoon will invade from the exhaust port 3. It is difficult to prevent.

As a prior art example, in a building such as a house, there is a “ventilation control device in a ventilation part” that is provided on a shutter or an outer wall and prevents inflow of strong wind or rainwater from the outside into the room (for example, see Patent Document 1). .
Japanese Utility Model Publication No. 63-167589

  However, the invention described in Patent Document 1 is configured to control the ventilation from the outside, and does not consider the ventilation generated from the inside. In the radio communication base station apparatus, not only ventilation from the outside but also exhaust from the internal driving fan must be taken into consideration.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to prevent dust flying on the wind from entering the inside of a radio communication base station apparatus installed outdoors.

  In order to achieve this object, the invention according to claim 1 is installed outdoors, comprising fan means for cooling the inside of the apparatus and an exhaust port for discharging an exhaust flow generated by driving the fan means. The wireless communication base station apparatus is characterized in that flap means that can be opened and closed under the influence of wind pressure is provided in the vicinity of the exhaust port.

  The invention according to claim 2 is the invention according to claim 1, wherein the flap means is configured such that the wind pressure blown from the outside of the radio communication base station apparatus is smaller than the wind pressure of the exhaust flow generated by driving the fan means. It operates under the influence of the wind pressure of the exhaust flow and is characterized by opening the exhaust port.

  According to a third aspect of the present invention, in the first or second aspect of the invention, the flap means is configured such that the wind pressure of the wind blown from the outside of the radio communication base station apparatus is larger than the wind pressure of the exhaust flow generated by driving the fan means. Operates under the influence of the wind pressure of the wind blown from the outside, and is characterized by closing the exhaust port.

  The invention according to claim 4 is the invention according to any one of claims 1 to 3, wherein the flap means is formed of a fluororesin sheet.

  According to a fifth aspect of the present invention, there is provided a fan unit that cools the inside of the device and an exhaust port for discharging an exhaust flow generated by driving the fan unit. Is a dust intrusion prevention method for preventing intrusion of dust flying on a vehicle, and is provided with flap means that can be opened and closed under the influence of wind pressure in the vicinity of the exhaust opening, and the opening and closing operation of the flap means is controlled by opening and closing operation It is characterized by that.

  The invention according to claim 6 is the invention according to claim 5, wherein the flap means is configured such that when the wind pressure of the wind blown from the outside of the radio communication base station apparatus is smaller than the wind pressure of the exhaust flow generated by driving the fan means, It operates under the influence of the wind pressure of the exhaust flow and is characterized by opening the exhaust port.

  The invention according to claim 7 is the invention according to claim 5 or 6, wherein in the flap means, the wind pressure of the wind blown from the outside of the radio communication base station apparatus is larger than the wind pressure of the exhaust flow generated by driving the fan means. Operates under the influence of the wind pressure of the wind blown from the outside, and is characterized by closing the exhaust port.

  The invention according to claim 8 is the invention according to any one of claims 5 to 7, wherein the flap means is formed of a fluororesin sheet.

  ADVANTAGE OF THE INVENTION According to this invention, in the radio | wireless communication base station apparatus installed outdoors, it can prevent that the dust which flies on a wind and penetrate | invades into the inside of an apparatus.

  The best mode for carrying out the present invention will be described below in detail with reference to the accompanying drawings.

  The radio communication base station apparatus according to the embodiment of the present invention is a downsized apparatus because it is installed on an outdoor utility pole, steel tower, or the like. As shown in FIG. 1, the radio communication base station apparatus 1 of the present embodiment includes a drive fan 2 as a cooling device inside the apparatus, and an exhaust port 3 in the casing. The radio communication base station apparatus 1 is cooled by driving the drive fan 2. At this time, the air (exhaust flow in the drawing) sucked by the rotational force of the drive fan 2 from the lower part of the radio communication base station apparatus 1 is The gas is discharged from the exhaust port 3.

  As shown in FIG. 1, the radio communication base station apparatus 1 according to the present embodiment has a structure in which a movable flap 4 is attached to the outside of the exhaust port 3 between the duct structure 5 and the exhaust port 3. Yes. One end of the movable flap 4 is attached to the outside of the housing in the vicinity of the exhaust port 3 by a hinge portion or the like, and is movable around the attachment portion under the influence of wind pressure. The movable flap 4 is formed of a thin and lightweight fluororesin sheet (for example, a polytetrafluoroethylene (PTFE) sheet that is a tetrafluoroethylene resin).

  FIG. 1 shows a state in which the movable flap 4 is closed. When the driving fan 2 is not driven and no exhaust flow is generated, the movable flap 4 is closed as shown in FIG. And when the drive fan 2 drives and an exhaust flow generate | occur | produces, as shown in FIG. 2, the movable flap 4 is pressed by an exhaust flow, and opens to an external direction. At this time, the exhaust flow is discharged from below the duct structure portion 5 through the exhaust port 3. When the movable flap 4 is in an open state, the wind pressure of the exhaust flow is greater than the wind pressure of the wind blown from outside, so even if the wind blows from the outside, it goes against the flow of the exhaust flow. The dust 6 does not enter the inside of the apparatus through the exhaust port 3.

  Then, when a gust of wind pressure larger than the exhaust flow is blown from the outside to the wireless communication base station apparatus 1 when the movable flap 4 shown in FIG. 2 is in the open state, the movable flap 4 is pressed by the gust of wind and operates. Then, the exhaust port 3 is temporarily closed. That is, as shown in FIG. 1, the movable flap 4 is closed by the force of the gust to close the exhaust port 3.

  Therefore, when the driving fan 2 is driven, the movable flap 4 of this embodiment is opened by the force of the exhaust flow coming out from the exhaust port 3 as shown in FIG. When a gust exceeding the wind pressure of the exhaust flow blows to the radio base station device, the movable flap 4 closes the exhaust port 3 as shown in FIG. 1, thus preventing dust from entering from the outside of the device. it can.

  As described above, according to this embodiment, in a radio base station apparatus installed outdoors, a seasonal wind generated by the natural environment is provided by providing a movable flap with a simple structure near the exhaust port provided in the housing. In addition, it is possible to prevent dust flying on wind gusts (wind speed of 20 m / sec or more) generated during a typhoon from entering the inside of the apparatus from the exhaust port, and to prevent the driving fan in the apparatus from stopping.

  Further, according to the present embodiment, the movable flap 4 can be attached without having electrical control because it uses the force that causes the natural phenomenon as it is.

  Further, according to the present embodiment, since the movable flap 4 is formed of a lightweight fluororesin member (PTFE member or the like), the installation space can be reduced and the dust intrusion prevention performance can be satisfied.

  As mentioned above, although the Example of this invention was described, it is not limited to description of the said Example, A various deformation | transformation is possible in the range which does not deviate from the summary.

  The present invention can be applied to all apparatuses and devices that are installed outdoors and have an opening in a housing.

It is a figure which shows typically the state at the time of flap closure in the radio | wireless communication base station apparatus of this invention. It is a figure which shows typically the state at the time of flap opening in the radio | wireless communication base station apparatus of this invention. It is a figure which shows typically the structure of the conventional radio | wireless communication base station apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Wireless communication base station apparatus 2 Drive fan for cooling 3 Exhaust port 4 Movable flap 5 Duct structure part 6 Dust

Claims (8)

Fan means for cooling the inside of the apparatus;
A wireless communication base station device installed outdoors, comprising an exhaust port for discharging an exhaust flow generated by driving the fan means,
A radio communication base station apparatus comprising flap means that can be opened and closed under the influence of wind pressure near the exhaust port.   The flap means operates under the influence of the wind pressure of the exhaust flow when the wind pressure of the wind blown from the outside of the radio communication base station device is smaller than the wind pressure of the exhaust flow generated by driving the fan means, The radio communication base station apparatus according to claim 1, wherein the exhaust port is opened.   The flap means operates under the influence of the wind pressure blown from the outside when the wind pressure blown from the outside of the radio communication base station apparatus is larger than the wind pressure of the exhaust flow generated by driving the fan means. The radio communication base station apparatus according to claim 1, wherein the exhaust port is closed.   The radio communication base station apparatus according to any one of claims 1 to 3, wherein the flap means is formed of a fluororesin sheet. A fan unit that cools the inside of the apparatus, and an exhaust port for discharging an exhaust flow generated by driving the fan unit. A dust intrusion prevention method for preventing intrusion,
Provided in the vicinity of the exhaust port is a flap means that can be opened and closed under the influence of wind pressure,
A dust intrusion prevention method, wherein opening and closing of the exhaust port is controlled by an opening and closing operation of the flap means.   The flap means operates under the influence of the wind pressure of the exhaust flow when the wind pressure of the wind blown from the outside of the radio communication base station device is smaller than the wind pressure of the exhaust flow generated by driving the fan means, 6. The dust intrusion prevention method according to claim 5, wherein the exhaust port is opened.   The flap means operates under the influence of the wind pressure blown from the outside when the wind pressure blown from the outside of the radio communication base station apparatus is larger than the wind pressure of the exhaust flow generated by driving the fan means. 7. The dust intrusion prevention method according to claim 5, wherein the exhaust port is closed.   The dust intrusion prevention method according to any one of claims 5 to 7, wherein the flap means is formed of a fluororesin sheet.

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