US20020036892A1 - Amplifier - Google Patents
Amplifier Download PDFInfo
- Publication number
- US20020036892A1 US20020036892A1 US09/820,355 US82035501A US2002036892A1 US 20020036892 A1 US20020036892 A1 US 20020036892A1 US 82035501 A US82035501 A US 82035501A US 2002036892 A1 US2002036892 A1 US 2002036892A1
- Authority
- US
- United States
- Prior art keywords
- amplifier
- box
- amplifier part
- parts
- side member
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M3/00—Automatic or semi-automatic exchanges
- H04M3/08—Indicating faults in circuits or apparatus
- H04M3/12—Marking faulty circuits "busy"; Enabling equipment to disengage itself from faulty circuits ; Using redundant circuits; Response of a circuit, apparatus or system to an error
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/74—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission for increasing reliability, e.g. using redundant or spare channels or apparatus
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q1/00—Details of selecting apparatus or arrangements
- H04Q1/02—Constructional details
- H04Q1/035—Cooling of active equipments, e.g. air ducts
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q1/00—Details of selecting apparatus or arrangements
- H04Q1/02—Constructional details
- H04Q1/11—Protection against environment
- H04Q1/114—Protection against environment flooding protection, e.g. using water proof provision
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q2201/00—Constructional details of selecting arrangements
- H04Q2201/08—Pivotable parts
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q2201/00—Constructional details of selecting arrangements
- H04Q2201/10—Housing details
Definitions
- the present invention relates to an amplifier and the one applied to, for example, an outdoor type amplifier placed on the top of a telephone pole and used for a radio communication system for a portable telephone.
- An outdoor type amplifier which is placed at a high position such as on the top of a telephone pole or on the roof of a building, is used for amplifying a radio wave in a portable radio-phone system such as a portable telephone.
- a portable radio-phone system such as a portable telephone.
- FIG. 4 One example of conventional outdoor type amplifiers placed on the top of a telephone pole is shown in FIG. 4.
- This amplifier is composed of an amplifier box 101 and one amplifier part 102 built therein.
- a door 103 for maintenance and inspection is provided on the front of the amplifier box 101 .
- a rubber packing 104 is provided on the mating face of the door 103 where the door 103 is mated with the amplifier box 101 , and the door 103 is closed in the state where the door 103 is mated with the packing 104 by fastening screws 105 .
- a radiator 106 for dissipating heat.
- a fixing hardware 107 On the back of the amplifier box 101 is provided a fixing hardware 107 and by fixing the fixing hardware 107 to a telephone pole or the like with fixing bolts 108 , the amplifier is fixed to the telephone pole or the like.
- a high-frequency connector 109 , a signal connector 110 , a power source connector 111 and the like are connected to the amplifier part 102 in the amplifier box 101 from the outside.
- the present invention has been made in view of this problem and the object of the present invention is to provide an amplifier which does not lose an amplification function even when it is repaired or inspected.
- An amplifier according to the present invention to solve the above-mentioned problem comprises a box and a plurality of amplifier parts mounted on the box in such a way that they are opened or closed.
- the other amplifier part can substitute for the malfunctioning amplifier part.
- An amplifier according to the present invention is characterized in that each amplifier part has a radiator in the above-mentioned constitution.
- heat generated by the amplifier part can be dissipated by the radiator.
- An amplifier according to the present invention is characterized in that the mating portion of the box and each of the amplifier parts has a waterproof structure in the above-mentioned constitution.
- the mating portion of the box and each of the amplifier parts has a waterproof structure and hence can prevent rain or the like from entering the box to protect the amplifier part.
- An amplifier according to the present invention comprises a box and an amplifier part mounted on the box in such a way that it can be opened or closed with a hinge to be separated and that it can be dismounted from the box by separating the hinge.
- the amplifier part when the amplifier part malfunctions because of a failure, it is dismounted from the box and can be readily replaced or repaired.
- An amplifier according to the present invention is characterized in that, in the above-mentioned constitution, the hinge is separated into a box side member fixed to the box and an amplifier side member fixed to the amplifier part and that the box side member is fitted in the amplifier side member from below to prevent the amplifier part from dropping.
- the amplifier part in the case where the amplifier is placed at a high position, when the amplifier part is repaired without being dismounted from the box, even if the amplifier part is opened, the amplifier part is prevented from dropping and further can be opened at the front of a worker, which facilitates a repair work.
- An amplifier according to the present invention is characterized in that, in the above-mentioned constitution, the amplifier part is a pair of amplifier parts mounted on the left and right sides of the box such that they can be opened or closed with hinges, wherein each hinge is separated into a box side member fixed to the box and an amplifier side member fixed to the amplifier part, wherein a backup amplifier side member is fixed to a position opposite to the position where the amplifier side member of the amplifier part is fixed, and wherein the amplifier part is selectively mounted on the left side or the right side of the box by selectively fitting the amplifier part side member in service or the backup amplifier part side member in the amplifier part side-member.
- an amplifier part dedicated to a right-hand side or a left-hand side is not required but the same amplifier part can be mounted on the either side of the box, which results in a reduction in manufacturing cost. Also, when assembling the amplifier part, it is possible to assemble the amplifier part without taking into account the position where the amplifier part is to be mounted, such as right-hand side or a left-hand side, which results in a reduction in work load.
- An amplifier according to the present invention comprises a box and an amplifier part mounted on the box in such a way that it can be opened or closed with a hinge having a clearance, wherein a packing made of an elastic material is fixed to the mating portion of the box and the amplifier part and wherein the amplifier part is fixed to the box in the state where the amplifier part is closed with a fastening member for pressing the amplifier part onto the box.
- a packing made of an elastic material for sealing such as rubber, synthetic resin or the like is fixed to the mating portion of the box and the amplifier part to form a waterproof structure for preventing the entry of rain or the like, and if the amplifier part is pressed onto and fixed to the box by the use of a fastening member such as a screw, a clip or the like in the state where the amplifier part is closed, the amplifier part and the box are pressed onto the packing of the mating portion to surely make the mating portion waterproof.
- An amplifier according to the present invention comprises a box, a pair of amplifier parts mounted on the left and right sides of the box in such a way that they are opened or closed, wherein the left and right amplifier parts can be mounted on the opposite sides, wherein a rubber packing is provided at the mating face of the box and each of the amplifier parts, and wherein a radiator for dissipating heat is provided on the outside of each of the amplifier parts.
- the amplifier of the present invention even if one of the left and right amplifier parts malfunctions, while it is repaired or replaced, the other amplifier part can substitute for the malfunctioning amplifier part. Also, according to the amplifier of the present invention, heat generated by the amplifier part is dissipated by the radiator provided on the outside. According to the amplifier of the present invention, the packing provided on the mating portion of the box and the amplifier part can prevent the entry of rain or the like. Further, according to the amplifier parts of the present invention, they can be switched between the left and right amplifier parts. Therefore, when the amplifier part in service malfunctions, it can be replaced with the other amplifier part.
- An amplifier according to the present invention is characterized in that, in the above-mentioned constitution, one of the pair of amplifier parts is in service and the other is used as a backup.
- an amplifier according to the present invention is characterized in that, in the above-mentioned constitution, the amplifier is placed outdoors at a high position in order to amplify the radio wave of a portable telephone system.
- the amplifier of the present invention when the amplifier part now in service malfunctions because of a failure, it can be replaced with the backup amplifier part on standby. Therefore, the operation of a radio communication system using this amplifier can be restored without being stopped for a long time.
- FIG. 1 is a perspective external view of an amplifier according to one preferred embodiment of the present invention.
- FIG. 2 is an exploded perspective view of one preferred embodiment
- FIG. 3 is a view to show the assembling procedures of one preferred embodiment.
- FIG. 4 is a perspective view of one example of conventional amplifiers.
- FIG. 1 shows a perspective external view of an amplifier according to one preferred embodiment of the present invention
- FIG. 2 shows an exploded perspective external view of one preferred embodiment
- FIG. 3 shows a view to show the assembling procedures of one preferred embodiment.
- a box 1 is shaped like a rectangular solid and has a partition wall 2 at the center in the left-right direction (in the direction of width) and spaces 3 in both sides of the partition wall 2 .
- a rubber packing 4 is fixed to the rectangular opening end surface of each of both the left and right sides of the box 1 .
- Fixing female screw threads (here, four screw threads) 5 are cut in the opening end surface through the rubber packing 4 .
- Receiving blocks 6 each of which constitutes one part member of a hinge, are fixed to the upper and lower portions of both the left and right borders on the back side of the box 1 .
- In the receiving block 6 is made a hole 7 into which a shaft of a shaft block constituting the other member of the hinge as described below.
- a fixing hardware 8 approximately shaped like a letter T.
- a plate-shaped portion 8 a projecting to the left and right sides of the fixing hardware 8 is fixed to a telephone pole or the like with bolts 9 .
- Each of the respective left and right door-shaped amplifier parts 10 in which an amplifier is built is shaped like a plate.
- a large number of fins 11 constituting a radiator as a device for dissipating heat are fixed, in parallel in the up and down direction, to the outer surface of the door-shaped amplifier part 10 .
- Shaft blocks 13 each of which constitutes the other part member of the hinge, are fixed to the upper and lower portions of both the side end faces 12 of the respective left and right door-shaped amplifier parts 10 .
- Each shaft block 13 is provided in a downward direction with a pin 14 to be inserted into the hole 7 of the receiving block 6 .
- the pin 14 of the shaft block 13 is fitted in the hole 7 of the receiving block 5 with a little clearance therebetween.
- Fixing male screws 15 to be screwed into the fixing female screw threads 5 cut in the box 1 are provided at the positions corresponding to the fixing female screw threads 5 on both sides of the large number of fins 11 fixed to the door-shaped amplifier part 10 .
- the pin 14 of each of the upper and lower shaft blocks 13 on the side end of one of the door-shaped amplifier parts 10 is inserted into the hole 7 of each of the upper and lower receiving blocks 6 on each of both the left and right sides of the back of the box 1 , as shown by an arrow A in FIG. 3.
- the door-shaped amplifier part 10 is supported by the receiving blocks 6 in the state where the bottom surface of each of the shaft blocks 13 is placed on the top surface of each of the receiving blocks 5 , and the hole 7 and the pin 14 inserted thereinto function as a hinge, whereby the door-shaped amplifier part 10 is supported by the receiving blocks 6 from the lower side thereof and is prevented from dropping downward and can be opened or closed with respect to the rubber packing 4 on the opening end face of the box 1 .
- the door-shaped amplifier part 10 When the door-shaped amplifier part 10 is closed and the fixing male screws 15 are screwed into the fixing female threads 5 , the door-shaped amplifier part 10 is fixed to the box 1 in the state where the door-shaped amplifier part 10 is closed, whereby the opening portion of the box 1 is closed and at the same time the rubber packing 4 is compressed, that is, the opening portion of the box 1 is hermetically closed. Since there is a little clearance between the hole 7 of the receiving block 6 and the pin 14 of the shaft block 13 , the rubber packing 4 is uniformly compressed by fastening the fixing male screws 15 to surely make the box 1 waterproof around its periphery.
- the amplifier assembled in the above mentioned manner is fixed to a telephone pole or the like. That is, the plate-shaped portion 8 a of the fixing hardware 8 amplifier is fixed to the telephone pole side by fastening bolts 9 . Also, though not shown, a high-frequency connector, a signal connector, and a power source connector are connected to the box 1 from the bottom side.
- the high-frequency connector, the signal connector, and the power source connector are arranged such that they are connected to the one of the door-shaped amplifier parts 10 .
- the high-frequency connector, the signal connector, and the power source connector are arranged such that they are connected to both of the door-shaped amplifier parts 10 .
- the fixing male screws 15 of the objective door-shaped amplifier part 10 are removed and the door-shaped amplifier part 10 is opened.
- the door-shaped amplifier part 10 is supported by the receiving blocks 6 in the state where the bottom surface of each of the shaft blocks 13 is placed on the top surface of each of the receiving blocks 6 . Since an inspection and a repair is made to the door-shaped amplifier part 10 in the open state, the work of inspection and repair can be made from the front side of the door-shaped amplifier part 10 .
- the door-shaped amplifier part 10 is dismounted, in a reverse order to the case where it is mounted, the door-shaped amplifier part 10 is dismounted by moving upward the door-shaped amplifier part 10 and removing the pin 14 of the shaft block 13 from the hole 7 of the receiving block 6 .
- the malfunctioning door-shaped amplifier part 10 is dismounted, for example, in the case where the right-hand door-shaped amplifier part 10 malfunctions, the right-hand door-shaped amplifier part 10 is dismounted and the left-hand door-shaped amplifier part 10 , which is the backup, is mounted on the right-hand side. Since the door-shaped amplifier part 10 is provided with the shaft blocks 13 on both sides, it can be mounted on right-hand side of the box 1 by the use of the shaft blocks 13 opposite to the shaft blocks 13 used when the door-shaped amplifier part 10 is mounted to the left side of the box 1 . Therefore, the malfunctioning door-shaped amplifier part 10 can be repaired or replaced with a function as an amplifier continued. Needless to say, a new door-shaped amplifier part 10 for a replacement is mounted on the left-hand side of the box 1 which is made vacant.
- door-shaped amplifier parts 10 are mounted on both the left and right sides of the box 1 in the above-mentioned preferred embodiment, another door-shaped amplifier part 10 may be mounted on the front side, that is, three door-shaped amplifier parts 10 may be mounted in total. Further, if the box 1 is fixed to the telephone pole or the like at the center portion, four or more door-shaped amplifier parts 10 can be provided around the box 1 .
- the radiator is composed of a large number of fins arranged in parallel in the up and down direction
- the configuration of the radiator is not limited to this type but other radiators of various shapes can be adopted.
- the box 1 may be provided with a receiving block having a pin projecting upward and the door-shaped amplifier part 10 may be provided with a block in which a hole is made from the bottom surface.
- a hinge structure any hinge structure may be adopted in which the door-shaped amplifier part 10 can be opened or closed with respect to the box 1 and be removably mounted on the box 1 .
- the present invention is not limited to the amplifier for the portable telephone but can be applied to various kinds of amplifiers.
- a box is provided with a plurality of amplifier parts which are opened or closed. Hence, even if one amplifier part malfunctions, the other amplifier part can continue the function of the amplifier if it is operated. Therefore, for example, in the case where the present invention is applied to the amplifier of the portable telephone, even the malfunction of one amplifier part does not result in the occurrence of an event where a service area is narrowed.
- one amplifier is provided with a plurality of amplifier parts and hence it is not necessary to separately keep many amplifier parts for maintenance and replacement.
- an amplifier part itself is provided with a radiator to dissipate heat and hence it is possible to avoid the malfunction caused by the heat generation of the amplifier. Further, since a box has a waterproof structure, it is possible to prevent rain or the like from entering the box and hence to protect the amplifier part.
- a box is provided with amplifier parts on both the left and right sides in such a way that they are opened or closed.
- a maintenance work can be made directly to the amplifier part from the front side in the state where the amplifier part is opened, which facilitates the maintenance and inspection work of the amplifier part even if the amplifier is placed in a narrow working space such as on a telephone pole or the like.
- amplifier parts of the present invention it is possible to switch between left and right amplifier parts. Therefore, even if one amplifier part in service malfunctions, it is possible to continue the function of the amplifier by replacing it with the other amplifier part.
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Casings For Electric Apparatus (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
- Installation Of Indoor Wiring (AREA)
- Amplifiers (AREA)
- Transmitters (AREA)
- Structure Of Receivers (AREA)
Abstract
Description
- 1. Field of the Invention
- The present invention relates to an amplifier and the one applied to, for example, an outdoor type amplifier placed on the top of a telephone pole and used for a radio communication system for a portable telephone.
- 2. Description of the Related Art
- An outdoor type amplifier, which is placed at a high position such as on the top of a telephone pole or on the roof of a building, is used for amplifying a radio wave in a portable radio-phone system such as a portable telephone. One example of conventional outdoor type amplifiers placed on the top of a telephone pole is shown in FIG. 4.
- This amplifier is composed of an
amplifier box 101 and oneamplifier part 102 built therein. Adoor 103 for maintenance and inspection is provided on the front of theamplifier box 101. Arubber packing 104 is provided on the mating face of thedoor 103 where thedoor 103 is mated with theamplifier box 101, and thedoor 103 is closed in the state where thedoor 103 is mated with thepacking 104 by fasteningscrews 105. - On the back side of the
amplifier box 101 is provided aradiator 106 for dissipating heat. On the back of theamplifier box 101 is provided afixing hardware 107 and by fixing thefixing hardware 107 to a telephone pole or the like withfixing bolts 108, the amplifier is fixed to the telephone pole or the like. A high-frequency connector 109, asignal connector 110, apower source connector 111 and the like are connected to theamplifier part 102 in theamplifier box 101 from the outside. - When the amplifier having the above configuration needs to be dismounted and repaired or replaced, the high-
frequency connector 109, thesignal connector 110, thepower source connector 111 are disconnected and further thefixing bolts 108 are removed and then the whole amplifier is dismounted from the telephone pole. - In the above conventional amplifier, when the amplifier is repaired or replaced, because the amplifier part is one, the amplification function of the amplifier is lost to narrow the service area of the portable telephone, which results in causing inconvenience to the users of the portable telephone.
- The present invention has been made in view of this problem and the object of the present invention is to provide an amplifier which does not lose an amplification function even when it is repaired or inspected.
- An amplifier according to the present invention to solve the above-mentioned problem comprises a box and a plurality of amplifier parts mounted on the box in such a way that they are opened or closed.
- According to the amplifier of the present invention, even in the case where one amplifier part malfunctions, while it is repaired or replaced, the other amplifier part can substitute for the malfunctioning amplifier part.
- An amplifier according to the present invention is characterized in that each amplifier part has a radiator in the above-mentioned constitution.
- According to the amplifier of the present invention, heat generated by the amplifier part can be dissipated by the radiator.
- An amplifier according to the present invention is characterized in that the mating portion of the box and each of the amplifier parts has a waterproof structure in the above-mentioned constitution.
- According to the amplifier of the present invention, the mating portion of the box and each of the amplifier parts has a waterproof structure and hence can prevent rain or the like from entering the box to protect the amplifier part.
- An amplifier according to the present invention comprises a box and an amplifier part mounted on the box in such a way that it can be opened or closed with a hinge to be separated and that it can be dismounted from the box by separating the hinge.
- According to the present invention, when the amplifier part malfunctions because of a failure, it is dismounted from the box and can be readily replaced or repaired.
- An amplifier according to the present invention is characterized in that, in the above-mentioned constitution, the hinge is separated into a box side member fixed to the box and an amplifier side member fixed to the amplifier part and that the box side member is fitted in the amplifier side member from below to prevent the amplifier part from dropping.
- According to the present invention, in the case where the amplifier is placed at a high position, when the amplifier part is repaired without being dismounted from the box, even if the amplifier part is opened, the amplifier part is prevented from dropping and further can be opened at the front of a worker, which facilitates a repair work.
- An amplifier according to the present invention is characterized in that, in the above-mentioned constitution, the amplifier part is a pair of amplifier parts mounted on the left and right sides of the box such that they can be opened or closed with hinges, wherein each hinge is separated into a box side member fixed to the box and an amplifier side member fixed to the amplifier part, wherein a backup amplifier side member is fixed to a position opposite to the position where the amplifier side member of the amplifier part is fixed, and wherein the amplifier part is selectively mounted on the left side or the right side of the box by selectively fitting the amplifier part side member in service or the backup amplifier part side member in the amplifier part side-member.
- According to the present invention, an amplifier part dedicated to a right-hand side or a left-hand side is not required but the same amplifier part can be mounted on the either side of the box, which results in a reduction in manufacturing cost. Also, when assembling the amplifier part, it is possible to assemble the amplifier part without taking into account the position where the amplifier part is to be mounted, such as right-hand side or a left-hand side, which results in a reduction in work load.
- An amplifier according to the present invention comprises a box and an amplifier part mounted on the box in such a way that it can be opened or closed with a hinge having a clearance, wherein a packing made of an elastic material is fixed to the mating portion of the box and the amplifier part and wherein the amplifier part is fixed to the box in the state where the amplifier part is closed with a fastening member for pressing the amplifier part onto the box.
- According to the present invention, a packing made of an elastic material for sealing such as rubber, synthetic resin or the like is fixed to the mating portion of the box and the amplifier part to form a waterproof structure for preventing the entry of rain or the like, and if the amplifier part is pressed onto and fixed to the box by the use of a fastening member such as a screw, a clip or the like in the state where the amplifier part is closed, the amplifier part and the box are pressed onto the packing of the mating portion to surely make the mating portion waterproof.
- An amplifier according to the present invention comprises a box, a pair of amplifier parts mounted on the left and right sides of the box in such a way that they are opened or closed, wherein the left and right amplifier parts can be mounted on the opposite sides, wherein a rubber packing is provided at the mating face of the box and each of the amplifier parts, and wherein a radiator for dissipating heat is provided on the outside of each of the amplifier parts.
- According to the amplifier of the present invention, even if one of the left and right amplifier parts malfunctions, while it is repaired or replaced, the other amplifier part can substitute for the malfunctioning amplifier part. Also, according to the amplifier of the present invention, heat generated by the amplifier part is dissipated by the radiator provided on the outside. According to the amplifier of the present invention, the packing provided on the mating portion of the box and the amplifier part can prevent the entry of rain or the like. Further, according to the amplifier parts of the present invention, they can be switched between the left and right amplifier parts. Therefore, when the amplifier part in service malfunctions, it can be replaced with the other amplifier part.
- An amplifier according to the present invention is characterized in that, in the above-mentioned constitution, one of the pair of amplifier parts is in service and the other is used as a backup.
- Also, an amplifier according to the present invention is characterized in that, in the above-mentioned constitution, the amplifier is placed outdoors at a high position in order to amplify the radio wave of a portable telephone system.
- According to the amplifier of the present invention, when the amplifier part now in service malfunctions because of a failure, it can be replaced with the backup amplifier part on standby. Therefore, the operation of a radio communication system using this amplifier can be restored without being stopped for a long time.
- FIG. 1 is a perspective external view of an amplifier according to one preferred embodiment of the present invention;
- FIG. 2 is an exploded perspective view of one preferred embodiment;
- FIG. 3 is a view to show the assembling procedures of one preferred embodiment; and
- FIG. 4 is a perspective view of one example of conventional amplifiers.
- FIG. 1 shows a perspective external view of an amplifier according to one preferred embodiment of the present invention, and FIG. 2 shows an exploded perspective external view of one preferred embodiment and FIG. 3 shows a view to show the assembling procedures of one preferred embodiment.
- A
box 1 is shaped like a rectangular solid and has apartition wall 2 at the center in the left-right direction (in the direction of width) andspaces 3 in both sides of thepartition wall 2. Arubber packing 4 is fixed to the rectangular opening end surface of each of both the left and right sides of thebox 1. Fixing female screw threads (here, four screw threads) 5 are cut in the opening end surface through therubber packing 4. Receivingblocks 6, each of which constitutes one part member of a hinge, are fixed to the upper and lower portions of both the left and right borders on the back side of thebox 1. In thereceiving block 6 is made ahole 7 into which a shaft of a shaft block constituting the other member of the hinge as described below. - On the back of the
box 1 is fixed afixing hardware 8 approximately shaped like a letter T. A plate-shaped portion 8 a projecting to the left and right sides of thefixing hardware 8 is fixed to a telephone pole or the like withbolts 9. - Each of the respective left and right door-
shaped amplifier parts 10 in which an amplifier is built is shaped like a plate. A large number offins 11 constituting a radiator as a device for dissipating heat are fixed, in parallel in the up and down direction, to the outer surface of the door-shaped amplifier part 10.Shaft blocks 13, each of which constitutes the other part member of the hinge, are fixed to the upper and lower portions of both the side end faces 12 of the respective left and right door-shaped amplifier parts 10. Eachshaft block 13 is provided in a downward direction with apin 14 to be inserted into thehole 7 of thereceiving block 6. Thepin 14 of theshaft block 13 is fitted in thehole 7 of thereceiving block 5 with a little clearance therebetween. Fixingmale screws 15 to be screwed into the fixingfemale screw threads 5 cut in thebox 1 are provided at the positions corresponding to the fixingfemale screw threads 5 on both sides of the large number offins 11 fixed to the door-shaped amplifier part 10. - Next, the assembling procedures of the amplifier in accordance wit one preferred embodiment based on FIG. 3.
- The
pin 14 of each of the upper and lower shaft blocks 13 on the side end of one of the door-shaped amplifier parts 10 is inserted into thehole 7 of each of the upper andlower receiving blocks 6 on each of both the left and right sides of the back of thebox 1, as shown by an arrow A in FIG. 3. The door-shaped amplifier part 10 is supported by thereceiving blocks 6 in the state where the bottom surface of each of theshaft blocks 13 is placed on the top surface of each of thereceiving blocks 5, and thehole 7 and thepin 14 inserted thereinto function as a hinge, whereby the door-shaped amplifier part 10 is supported by thereceiving blocks 6 from the lower side thereof and is prevented from dropping downward and can be opened or closed with respect to therubber packing 4 on the opening end face of thebox 1. - When the door-shaped
amplifier part 10 is closed and the fixingmale screws 15 are screwed into the fixingfemale threads 5, the door-shapedamplifier part 10 is fixed to thebox 1 in the state where the door-shapedamplifier part 10 is closed, whereby the opening portion of thebox 1 is closed and at the same time therubber packing 4 is compressed, that is, the opening portion of thebox 1 is hermetically closed. Since there is a little clearance between thehole 7 of the receivingblock 6 and thepin 14 of theshaft block 13, therubber packing 4 is uniformly compressed by fastening the fixingmale screws 15 to surely make thebox 1 waterproof around its periphery. - The amplifier assembled in the above mentioned manner is fixed to a telephone pole or the like. That is, the plate-shaped
portion 8 a of the fixinghardware 8 amplifier is fixed to the telephone pole side by fasteningbolts 9. Also, though not shown, a high-frequency connector, a signal connector, and a power source connector are connected to thebox 1 from the bottom side. Here, in the case where one of the left and right door-shapedamplifier parts 10 is used and the other is a backup, the high-frequency connector, the signal connector, and the power source connector are arranged such that they are connected to the one of the door-shapedamplifier parts 10. In the case where both the door-shapedamplifier parts 10 are used, the high-frequency connector, the signal connector, and the power source connector are arranged such that they are connected to both of the door-shapedamplifier parts 10. - When the door-shaped
amplifier part 10 is repaired or inspected, the fixingmale screws 15 of the objective door-shapedamplifier part 10 are removed and the door-shapedamplifier part 10 is opened. The door-shapedamplifier part 10 is supported by the receiving blocks 6 in the state where the bottom surface of each of the shaft blocks 13 is placed on the top surface of each of the receiving blocks 6. Since an inspection and a repair is made to the door-shapedamplifier part 10 in the open state, the work of inspection and repair can be made from the front side of the door-shapedamplifier part 10. In the case where the door-shapedamplifier part 10 is dismounted, in a reverse order to the case where it is mounted, the door-shapedamplifier part 10 is dismounted by moving upward the door-shapedamplifier part 10 and removing thepin 14 of theshaft block 13 from thehole 7 of the receivingblock 6. - In the case where only one of the door-shaped
amplifier parts 10 is used and the other is a backup, the malfunctioning door-shapedamplifier part 10 is dismounted, for example, in the case where the right-hand door-shapedamplifier part 10 malfunctions, the right-hand door-shapedamplifier part 10 is dismounted and the left-hand door-shapedamplifier part 10, which is the backup, is mounted on the right-hand side. Since the door-shapedamplifier part 10 is provided with the shaft blocks 13 on both sides, it can be mounted on right-hand side of thebox 1 by the use of the shaft blocks 13 opposite to the shaft blocks 13 used when the door-shapedamplifier part 10 is mounted to the left side of thebox 1. Therefore, the malfunctioning door-shapedamplifier part 10 can be repaired or replaced with a function as an amplifier continued. Needless to say, a new door-shapedamplifier part 10 for a replacement is mounted on the left-hand side of thebox 1 which is made vacant. - Although the door-shaped
amplifier parts 10 are mounted on both the left and right sides of thebox 1 in the above-mentioned preferred embodiment, another door-shapedamplifier part 10 may be mounted on the front side, that is, three door-shapedamplifier parts 10 may be mounted in total. Further, if thebox 1 is fixed to the telephone pole or the like at the center portion, four or more door-shapedamplifier parts 10 can be provided around thebox 1. - Although the radiator is composed of a large number of fins arranged in parallel in the up and down direction, the configuration of the radiator is not limited to this type but other radiators of various shapes can be adopted.
- Also, as for the receiving
block 6 and theshaft block 13 constituting the hinge, thebox 1 may be provided with a receiving block having a pin projecting upward and the door-shapedamplifier part 10 may be provided with a block in which a hole is made from the bottom surface. Further, as for a hinge structure, any hinge structure may be adopted in which the door-shapedamplifier part 10 can be opened or closed with respect to thebox 1 and be removably mounted on thebox 1. - Further, the present invention is not limited to the amplifier for the portable telephone but can be applied to various kinds of amplifiers.
- According to an amplifier of the present invention, a box is provided with a plurality of amplifier parts which are opened or closed. Hence, even if one amplifier part malfunctions, the other amplifier part can continue the function of the amplifier if it is operated. Therefore, for example, in the case where the present invention is applied to the amplifier of the portable telephone, even the malfunction of one amplifier part does not result in the occurrence of an event where a service area is narrowed.
- According to an amplifier of the present invention, one amplifier is provided with a plurality of amplifier parts and hence it is not necessary to separately keep many amplifier parts for maintenance and replacement.
- According to an amplifier of the present invention, an amplifier part itself is provided with a radiator to dissipate heat and hence it is possible to avoid the malfunction caused by the heat generation of the amplifier. Further, since a box has a waterproof structure, it is possible to prevent rain or the like from entering the box and hence to protect the amplifier part.
- According to an amplifier of the present invention, a box is provided with amplifier parts on both the left and right sides in such a way that they are opened or closed. Hence, a maintenance work can be made directly to the amplifier part from the front side in the state where the amplifier part is opened, which facilitates the maintenance and inspection work of the amplifier part even if the amplifier is placed in a narrow working space such as on a telephone pole or the like. Further, according to amplifier parts of the present invention, it is possible to switch between left and right amplifier parts. Therefore, even if one amplifier part in service malfunctions, it is possible to continue the function of the amplifier by replacing it with the other amplifier part.
Claims (11)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2000-292283 | 2000-09-26 | ||
JP2000292283A JP3814475B2 (en) | 2000-09-26 | 2000-09-26 | amplifier |
Publications (2)
Publication Number | Publication Date |
---|---|
US20020036892A1 true US20020036892A1 (en) | 2002-03-28 |
US6411515B1 US6411515B1 (en) | 2002-06-25 |
Family
ID=18775242
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US09/820,355 Expired - Fee Related US6411515B1 (en) | 2000-09-26 | 2001-03-29 | Amplifier |
Country Status (3)
Country | Link |
---|---|
US (1) | US6411515B1 (en) |
JP (1) | JP3814475B2 (en) |
KR (1) | KR100491690B1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20040198453A1 (en) * | 2002-09-20 | 2004-10-07 | David Cutrer | Distributed wireless network employing utility poles and optical signal distribution |
US20120014071A1 (en) * | 2010-07-16 | 2012-01-19 | Robert Louis Fils | Amplifier with sealed entry points |
EP2698922A1 (en) * | 2012-08-13 | 2014-02-19 | Huawei Technologies Co., Ltd. | Radio Remote Unit Device and Assembly Thereof |
USD974349S1 (en) * | 2021-09-24 | 2023-01-03 | Lg Electronics Inc. | Small computer |
Families Citing this family (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6981750B2 (en) * | 2002-09-16 | 2006-01-03 | Adc Telecommunications, Inc. | Retainer for hinged door |
US7869211B2 (en) * | 2006-06-30 | 2011-01-11 | Siemens Industry, Inc. | Electronic module configured for failure containment and system including same |
US7518863B2 (en) * | 2007-03-27 | 2009-04-14 | Adc Telecommunications, Inc. | Modularized radio frequency band components on removable doors |
US20080235907A1 (en) * | 2007-03-27 | 2008-10-02 | Adc Telecommunications, Inc. | Multi-functional hinge |
US8233274B2 (en) | 2010-07-21 | 2012-07-31 | International Business Machines Corporation | Computer chassis cooling sidecar |
US8270161B2 (en) * | 2010-08-06 | 2012-09-18 | International Business Machines Corporation | Hot or cold aisle computer chassis |
US11026347B2 (en) * | 2012-12-21 | 2021-06-01 | Smart Embedded Computing, Inc. | Configurable cooling for rugged environments |
US9713289B2 (en) | 2013-01-28 | 2017-07-18 | Ch2M Hill Engineers, Inc. | Modular pod |
USD754664S1 (en) * | 2013-03-15 | 2016-04-26 | Ch2M Hill Engineers, Inc. | Modular pod |
JP5975056B2 (en) * | 2014-04-03 | 2016-08-23 | 株式会社オートネットワーク技術研究所 | Electrical junction box |
USD835040S1 (en) | 2016-09-09 | 2018-12-04 | Corning Research & Development Corporation | 1×4 distribution point unit |
USD870723S1 (en) * | 2017-08-10 | 2019-12-24 | Arçelik Anonim Sirketi | Electronic information terminal |
US11121528B2 (en) * | 2018-05-22 | 2021-09-14 | Charter Communications Operating, Llc | Modular communications equipment support |
USD915391S1 (en) * | 2019-01-07 | 2021-04-06 | Lg Electronics Inc. | Small computer |
USD888046S1 (en) * | 2019-01-31 | 2020-06-23 | Getac Technology Corporation | Computer |
USD894188S1 (en) * | 2019-04-02 | 2020-08-25 | Wilson Electronics, Llc | Signal booster case |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2443122B2 (en) * | 1974-09-09 | 1979-05-17 | Siemens Ag, 1000 Berlin Und 8000 Muenchen | Device for high frequency and communications engineering |
US5150277A (en) * | 1990-05-04 | 1992-09-22 | At&T Bell Laboratories | Cooling of electronic equipment cabinets |
US5267122A (en) * | 1992-06-15 | 1993-11-30 | Alcatel Network Systems, Inc. | Optical network unit |
US5444868A (en) * | 1993-03-23 | 1995-08-22 | Ericsson Ge Mobile Communications Inc. | Modular mobile radio system |
JPH07142875A (en) * | 1993-11-16 | 1995-06-02 | Fujitsu Ltd | Desktop case for electronic communication apparatus |
US5476316A (en) * | 1993-12-28 | 1995-12-19 | At&T Corp. | Electronic equipment cabinet with improved door |
US6201878B1 (en) * | 1995-09-02 | 2001-03-13 | New Transducers Limited | Portable compact disc player |
US5625531A (en) * | 1995-10-25 | 1997-04-29 | General Electric Company | Motor control center pilot devices bracket |
US5930113A (en) * | 1996-06-03 | 1999-07-27 | Scientific-Atlanta, Inc. | Housing for electronic devices including internal fins for volumetric cooling |
US5721396A (en) * | 1996-09-06 | 1998-02-24 | Lucent Technologies Inc. | Building cable entrance terminal |
JP2954902B2 (en) * | 1997-05-29 | 1999-09-27 | ファナック株式会社 | Control device with built-in control electronics |
KR20000046114A (en) * | 1998-12-31 | 2000-07-25 | 김영환 | Apparatus for duplexing high-power amplifier in mobile communication system |
-
2000
- 2000-09-26 JP JP2000292283A patent/JP3814475B2/en not_active Expired - Fee Related
-
2001
- 2001-03-29 US US09/820,355 patent/US6411515B1/en not_active Expired - Fee Related
- 2001-03-30 KR KR10-2001-0017022A patent/KR100491690B1/en not_active IP Right Cessation
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20040198453A1 (en) * | 2002-09-20 | 2004-10-07 | David Cutrer | Distributed wireless network employing utility poles and optical signal distribution |
US20120014071A1 (en) * | 2010-07-16 | 2012-01-19 | Robert Louis Fils | Amplifier with sealed entry points |
EP2698922A1 (en) * | 2012-08-13 | 2014-02-19 | Huawei Technologies Co., Ltd. | Radio Remote Unit Device and Assembly Thereof |
CN103596297A (en) * | 2012-08-13 | 2014-02-19 | 华为技术有限公司 | Radio remote unit devices and assemblies thereof |
US9167712B2 (en) | 2012-08-13 | 2015-10-20 | Huawei Technologies Co., Ltd. | Radio remote unit device and assembly thereof |
US9642284B2 (en) | 2012-08-13 | 2017-05-02 | Huawei Technologies Co., Ltd. | Radio remote unit device and assembly thereof |
USD974349S1 (en) * | 2021-09-24 | 2023-01-03 | Lg Electronics Inc. | Small computer |
Also Published As
Publication number | Publication date |
---|---|
KR100491690B1 (en) | 2005-05-25 |
US6411515B1 (en) | 2002-06-25 |
KR20020024766A (en) | 2002-04-01 |
JP3814475B2 (en) | 2006-08-30 |
JP2002100934A (en) | 2002-04-05 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US6411515B1 (en) | Amplifier | |
US6945616B2 (en) | Modular enclosure system for electronic equipment | |
US20110128700A1 (en) | Computer enclosure | |
US6007353A (en) | Electrical connector enclosure | |
US9142939B2 (en) | Method and apparatus for mounting a power converter | |
CN107172839A (en) | A kind of integral intelligent rack | |
US6130386A (en) | Controller switch assembly | |
US11026347B2 (en) | Configurable cooling for rugged environments | |
US5874698A (en) | Mechanical interlock assembly | |
KR100878027B1 (en) | Case for electric elememts with cooling function | |
US6354681B1 (en) | Computer casing | |
EP3736877B1 (en) | Battery box body and battery box | |
US6302781B1 (en) | Fan-mounting faceplate for a chassis and methods of manufacture and assembly therefor | |
KR100818249B1 (en) | A traffic signal structure of a parts separation | |
CN219083497U (en) | Air cooling unit convenient to install | |
JP2022120873A (en) | Ground installation-type transformer | |
CN215300263U (en) | Combined UPS power supply device | |
CN217815856U (en) | Entrance guard for community prevention and control | |
CN212230823U (en) | Electrical cabinet for laboratory | |
US20080075612A1 (en) | Waterproof assembly for a blower | |
CN217363542U (en) | High-sealing terminal | |
CN221176757U (en) | Multifunctional dustproof junction box of industrial logistics conveyor | |
KR20220057977A (en) | a case with a subrack | |
CN219641883U (en) | Auxiliary debugging device for multi-loop miniature circuit breaker | |
KR101040079B1 (en) | Mobile communication repeater |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: HITACHI KOKUSAI ELECTRIC INC., JAPAN Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:SAKAMOTO, YUZURU;TAKAYASU, TETSUFUMI;SHIRATORI, MASUO;REEL/FRAME:011809/0989 Effective date: 20010322 |
|
FEPP | Fee payment procedure |
Free format text: PAYOR NUMBER ASSIGNED (ORIGINAL EVENT CODE: ASPN); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY |
|
FPAY | Fee payment |
Year of fee payment: 4 |
|
FPAY | Fee payment |
Year of fee payment: 8 |
|
REMI | Maintenance fee reminder mailed | ||
LAPS | Lapse for failure to pay maintenance fees | ||
STCH | Information on status: patent discontinuation |
Free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362 |
|
FP | Lapsed due to failure to pay maintenance fee |
Effective date: 20140625 |