JP5280574B2 - Optoelectronic equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To easily operate replacement or the like of a circuit incorporated into optoelectronic apparatus. <P>SOLUTION: A screw 13 with a knob is loosened and removed from a screw section of a second chassis 20b. An excess-length storing tray 10 is slid to the second chassis 20b, and the excess-length storing tray 10 is removed from the second chassis 20b of a transmitter section 20 by extracting hooks 10b from housing holes. The removed excess-length storing tray 10 is moved on an upper case 3, and two hooks 10b of the excess-length storing tray 10 are inserted into the housing holes formed on a top face of a power supply section 40. The excess-length storing tray 10 is slid and fixed temporarily so that the hooks 10b are engaged with the housing holes. A Tx fixing screw 22 is loosened and is removed from a lower case 2, thereby, the transmitter section 20 can be removed from the lower case 2. <P>COPYRIGHT: (C)2013,JPO&amp;INPIT

Description

  The present invention relates to an optoelectronic device to which a signal from an optical fiber is input.

  The digital terrestrial broadcasting started in December 2003 will start the main broadcasting of digital master stations nationwide in December 2006, and the terrestrial digital broadcasting will stabilize toward the end of the terrestrial analog broadcasting in July 2011. The relay network is being developed so that it can be received. Micropower stations (gap fillers) have been proposed as countermeasures for reception interference in places where digital broadcast radio waves are blocked by high-rise buildings or buildings, or where digital broadcasts cannot be received satisfactorily due to geographical conditions. The gap filler is a small-scale radio facility, and is a broadcasting station that performs relay reception broadcasting for countermeasure against digital reception failure with a transmission power of 0.05 W (in principle, 0.01 W) or less. Gap filler shields radio waves in mountainous areas and other areas where radio waves are blocked and cannot be received due to terrain, cities where buildings and other buildings cannot receive radio waves, underground malls, subway premises, and tunnels Installed in place. The gap filler re-broadcasts the terrestrial digital broadcast signal received at the reception point at the transmission point, but when the distance between the reception point and the transmission point is far, the received signal is transmitted from the reception point to the transmission point by an optical fiber. Is transmitting. For this reason, an optical fiber is introduced into the gap filler, and an optical receiving circuit that receives an optical signal input through the optical fiber is built in.

  The gap filler into which the optical fiber is introduced has a surplus length storage portion that stores the surplus length of the optical fiber. The extra length storage section allows extra length to allow extra length in the optical fiber length, and can be used as it is for connection changes that extend the length of the optical fiber, or a low-loss connection can be achieved by connecting optical fibers. If not, the connection end of the optical fiber can be disconnected and the process can be started again. Furthermore, even when the optical fiber is damaged due to maintenance work or the like, it is possible to reconnect by cutting up to the damaged portion. If the optical fiber is bent too much, its transmission characteristics deteriorate and may be broken in extreme cases. Therefore, the extra length of the optical fiber is stored in the extra length storage section so as to maintain a predetermined bending radius. Yes.

JP 2004-251968 A

  In the conventional extra length storage portion, the extra length portion of the optical fiber is accommodated in a dedicated tray such as a resin tray. In this case, since the tray of the extra length storage unit is disposed at the uppermost stage because the optical fiber is introduced from the outside, there is a problem that it is difficult to adjust a circuit such as an optical receiving circuit. In addition, when adjusting the circuit, the optical fiber may get in the way or be damaged. Furthermore, when a circuit such as an optical receiver circuit breaks down, it is necessary to replace the circuit. When replacing the circuit, the extra length portion of the optical fiber contained in the extra length accommodation portion is replaced with the extra length accommodation portion. Then, the circuit must be replaced once and removed, and then the extra length of the optical fiber must be accommodated again in the extra length accommodating part, which makes the work complicated.

  Accordingly, the present invention provides an optoelectronic device that can easily perform operations during installation, maintenance, inspection, and replacement of a circuit built in the optoelectronic device and that does not damage the optical fiber during the operation. It is an object.

  In order to achieve the above object, an optoelectronic apparatus according to the present invention is an optoelectronic apparatus that includes a case that is configured such that an upper case can be freely opened and closed in a lower case, and an optical fiber is introduced into the case. A transmitter chassis having a first housing hole formed in the upper surface and housed in the lower case; and a circuit unit for inputting an optical signal from the optical fiber, the circuit unit being provided in the transmitter chassis. A built-in transmitter part and an extra length part of the optical fiber are accommodated, and a plurality of hooks that can be inserted into the first accommodation holes formed in the transmitter chassis are formed in the lower part. A surplus length storage tray, a power source chassis that is accommodated in the upper case, and a second storage hole into which the hook of the surplus length storage tray can be inserted is formed on the upper surface; and the power source chassis A power supply unit built in, and the extra length By inserting the hook of the storage tray into the first storage hole formed in the transmitter chassis, the extra-length storage tray is detachably mounted on the transmitter chassis, and the lower case In the state where the upper case is opened, the extra-length storage tray is removed from the transmitter chassis, and the hook of the extra-length storage tray is connected to the second storage hole formed in the power supply unit chassis. The main feature is that the extra length storage tray can be temporarily fixed to the power source chassis by being inserted into the power supply chassis.

  According to the present invention, when the circuit built in the case is installed, maintained, inspected, or replaced, the lower case and the upper case are opened, and the hook of the extra length storage tray is set to the second. Since the extra length storage tray in which the extra length portion of the optical fiber is accommodated can be temporarily fixed to the power source chassis by being inserted into the storage hole, the above operation can be easily performed. Further, since the extra length of the optical fiber does not interfere with the operation during this operation, it is possible to prevent the optical fiber from being damaged during the operation.

It is a top view which shows the structure of the transmitting apparatus which is the Example of the optoelectronic device concerning this invention. It is a side view which shows the structure of the transmitting apparatus which is the Example of the optoelectronic device concerning this invention. It is a top view which shows the state which opened the upper case from the lower case in the transmitter concerning this invention. It is a side view which shows the state which opened the upper case from the lower case in the transmitter concerning this invention by sectional drawing. It is a figure which shows the operation | work process at the time of exchanging a transmitter part in the transmitter concerning this invention. It is another figure which shows the operation | work process at the time of replacing | exchanging a transmitter part in the transmitter concerning this invention. It is a top view which shows the structure of the 1st chassis in the transmitter of this invention. It is a side view which shows the structure of the 1st chassis in the transmitting apparatus of this invention. It is a top view which shows the structure of the 2nd chassis in the transmitting apparatus of this invention. It is a side view which shows the structure of the 2nd chassis in the transmitting apparatus of this invention. It is a top view which shows the structure of the tray chassis in the transmitter of this invention. It is a front view which shows the structure of the tray chassis in the transmitter of this invention. It is a side view which shows the structure of the tray chassis in the transmitter of this invention. It is a figure which expands and shows the structure of a part of tray chassis in the transmitter of this invention. It is a top view which shows the structure of the power supply part chassis in the transmitter of this invention. It is a side view which shows the structure of the power supply part chassis in the transmitter of this invention. It is a front view which shows the structure of the power supply part chassis in the transmitter of this invention. It is a figure which shows the method of mounting | wearing the tray chassis with the clip in the transmitting apparatus of this invention. It is a figure which shows the structure of the clip with which the tray chassis in the transmitting apparatus of this invention was mounted | worn.

FIG. 1 is a plan view showing the configuration of a transmitter 1 that is an embodiment of the optoelectronic device according to the present invention, and FIG. 2 is a side view showing the configuration of the transmitter 1.
The transmitter 1 according to the present invention shown in these drawings is the gap filler transmitter described above, and includes a case made of a lower case 2 and an upper case 3 made of metal or resin, and the upper case 3 is the lower case 2. Is fitted to be openable and closable. A hinge part is provided on one of the long sides of the case, and the side part of the upper case 3 is pivotally supported by the side part of the lower case 2 by this hinge part, and the upper case 3 is attached to the lower case 2. On the other hand, it can be opened and closed freely. When the upper case 3 is closed with respect to the lower case 2, a plurality of mounting bolts 5 are screwed and fixed to the lower case 2 from the upper case 3, thereby forming a rainproof case. . An optical fiber input portion 4a into which an optical fiber is introduced is provided on one side surface of the lower case 2, and a transmission output terminal 4b, a monitor terminal 4c, and a power input portion 4d are provided on the side surface opposite to the one side surface. It has been. The transmission output terminal 4b and the monitor terminal 4c are coaxial terminals, and a retransmission trust antenna is connected to the transmission output terminal 4b.

3 and 4 show a state in which the upper case 3 is opened from the lower case 2 in the transmitter 1 according to the present invention. FIG. 3 is a plan view showing a state where the upper case 3 is opened from the lower case 2, and FIG. 4 is a side view showing a state where the upper case 3 is opened from the lower case 2 in a sectional view.
As shown in these drawings, a side part of the upper case 3 is pivotally supported by a side part of the lower case 2 by a hinge part 2a provided in the lower case 2 and the upper case 3, so that the lower case 2 An upper case 3 is opened with respect to 2. An optical fiber 11 and an optical fiber messenger wire 11a are introduced into the lower case 2 from an optical fiber input portion 4a provided in the lower case 2, and the messenger wire 11a is fixed to the bottom of the lower case 2. The bottom plate chassis 30 is fixed by a mounting bracket. Further, the extra length of the optical fiber 11 is wound and accommodated in an extra length storage tray 10 stored at the top of the lower case 2. The extra length storage tray 10 has a tray chassis 10a made of metal or resin and formed in a flat plate shape, and the configuration of the tray chassis 10a is shown in FIGS.

11 is a plan view showing the configuration of the tray chassis 10a, FIG. 12 is a front view showing the configuration of the tray chassis 10a, FIG. 13 is a side view showing the configuration of the tray chassis 10a, and FIG. It is a figure which expands and shows a part of structure of 10a.
In the tray chassis 10a shown in these drawings, a plurality of clip attachment holes 14a for attaching the clips 12 are formed at predetermined positions, and a screw 13 with a knob is provided in the approximate center. In addition, L-shaped hooks 10b are formed on the short sides facing each other in a stepwise manner downward. The front side of the paper surface on the short side of the tray chassis 10a is partly cut out, and a groove 14b is formed in the cut right side portion. The structure of the knob screw 13 and the hook 10b is enlarged and shown in FIG. 14. As shown in this figure, the knob screw 13 has a base portion 13c fixed to the upper surface of the tray chassis 10a and a head portion whose diameter is increased. The screw portion 13a is knurled and has a screw formed in the lower portion thereof, and a screw portion 13a having a central portion slidably inserted in a through hole formed at substantially the center of the base portion 13c; And a coil-shaped spring 13b that is disposed between the upper surface of the base portion 13c and biases the screw portion 13a upward. Further, the hook 10b is formed in an L shape, and a slope is formed so that the L-shaped tip gradually becomes thinner.

Returning to FIG. 3 and FIG. 4, the clips 12 are respectively mounted in the clip mounting holes 14 a of the tray chassis 10 a configured as described above. The clip 12 has a rectangular frame, and the optical fiber 11 is inserted into the frame 12 and wound as shown in FIG. can do. Here, the structure of the clip 12 is shown in FIGS.
FIG. 18 is a view showing a method of attaching the clip 12 to the tray chassis 10a, and FIG. 19 is a view showing a configuration of the clip 12 attached to the tray chassis 10a. As shown in these drawings, the resin clip 12 includes a substantially rectangular insertion frame 12a, a locking piece 12b for attaching the clip 12 to the tray chassis 10a, and an elastic contact piece 12c. The insertion frame 12a has a hook 12d formed on one side and can be opened and closed. The hook 12d is removed, the insertion frame 12a is opened, the optical fiber 11 is inserted into the insertion frame 12a, and the hook 12d is engaged. Thus, the optical fiber 11 can be inserted into the closed insertion frame 12a. The locking piece 13c is formed so as to become gradually thinner toward the tip, and a flat locking surface is formed at the base. In addition, the elastic contact side 12c is configured such that the horizontally extended side portion is gradually bent downward.

  When attaching the clip 12 to the tray chassis 10a, the tip of the locking piece 12b is brought into contact with the clip mounting hole 14a of the tray chassis 10a, and a force is applied to the locking piece 12 by applying a force in a downward direction inclined slightly by tilting the clip 12. Is pushed into the clip mounting hole 14a. As a result, the left and right sides of the locking piece 12b bend and pass through the clip mounting hole 14a. At this time, the elastic contact piece 12c abuts on the upper surface of the tray chassis 10a and is deformed so as to be flat. Therefore, the elastic contact piece 12c applies an upward biasing force to the locking piece 12b. Thereby, the fundamental flat surface of the locking piece 12b that has passed through the clip mounting hole 14 comes into contact with the back surface of the tray chassis 10a. FIG. 19 shows a state in which the tray chassis 10a is attached in this manner. A plurality of clips 12 are attached to the tray chassis 10a as described above, and the hook 12d of the insertion frame 12a is removed, and a plurality of clips 12 are attached. The extra length of the optical fiber 11 is wound around the insertion frame 12a of the clip 12 and the hooks of all the clips 12 are engaged. The long part can be stored. An optical plug is provided at the end of the optical fiber 11 drawn from the extra length storage tray 10.

  This optical plug is detachably attached to the optical connector 21 fixed to the upper surface of the second chassis 20b that constitutes the upper part of the transmitter unit 20, and the optical signal transmitted through the optical fiber 11 is transmitted to the transmitter unit 20. Is input. The transmitter unit 20 is disposed between the extra-length storage tray 10 and the bottom plate chassis 30, and the transmitter unit 20 is stored in the lower case 2. The transmitter unit 20 includes an optical receiver having an optical-electric conversion circuit that converts an optical signal input via the optical connector 21 into an electrical signal, and an electrical signal converted by the optical-electrical conversion circuit. And a transmission unit having a transmission circuit for converting the transmission signal into a transmission signal of a certain frequency band. The circuits of the optical receiving unit and the transmitting unit are divided into circuits of a predetermined unit and incorporated in a transmitter chassis including the first chassis 20a, the second chassis 20b, and the third chassis 20c. 7 and 8 show the configuration of the first chassis 20a, and FIGS. 9 and 10 show the configuration of the second chassis 20b.

FIG. 7 is a plan view showing the configuration of the first chassis 20a, and FIG. 8 is a side view showing the configuration of the first chassis 20a.
As shown in these drawings, the first chassis 20a is formed by processing a metal plate, and has a predetermined depth and is formed in a box-like shape with the left front side shown in the drawing cut out. The first chassis 20a is configured to have a plurality of rooms separated by side plates 24c, and each room is formed by being surrounded by side plates 24c that are metal plates. Is the shield portion 24a. A printed circuit board of a circuit as a unit is incorporated in each shield part 24a. A plurality of attachment pieces 24b are formed on the upper edge of each shield portion 24a so as to protrude inward, and screws inserted into the insertion holes 25e of the second chassis 20b are screwed into the attachment pieces 24b. As a result, the upper portion of the first chassis 20a is electrically closed by the second chassis 20b.

FIG. 9 is a plan view showing the configuration of the second chassis 20b, and FIG. 10 is a side view showing the configuration of the second chassis 20b.
As shown in these drawings, the second chassis 20b includes a chassis plate 25a formed by processing a metal plate, and the chassis plate 25a is cut out on the left front side shown in the drawing according to the shape of the first chassis 20a. It is formed in a flat plate shape. Two screw insertion holes 25b for inserting a Tx attachment screw 22 for fixing the transmitter unit 20 to the lower case 2 and an L-shaped hook 10b of the extra-length storage tray 10 are fitted into the chassis plate 25a. Two elongated rectangular storage holes 25c are formed. The chassis plate 25a has a large number of insertion holes 25e. A screw is inserted into the insertion hole 25e and screwed into the mounting piece 24b of the first chassis 20a. It can be attached to one chassis 20a. Further, a screw portion 25d to which the screw 13 with the knob of the extra length storage tray 10 is screwed is provided at a substantially central portion of the chassis plate 25a.

  When the extra length storage tray 10 is attached to the second chassis 20b, the extra length storage tray 10 is placed on the second chassis 20b and aligned so that the hooks 10b provided at the two locations are respectively connected to the second chassis 20b. 2 Insert into the storage hole 25c of the chassis 20b. Then, by sliding the excess length storage tray 10 toward the front side of the paper surface, the hook 10b is engaged with the back surface of the storage hole 25c so as not to come out, and the knob screw 13 is aligned with the screw portion 25d. . Therefore, the extra length storage tray 10 can be fixed to the second chassis 20b by pressing down the screw 13 with the knob against the spring 13b and screwing it onto the screw portion 25d. Thereby, as shown in FIG. 3 and FIG. 4, the extra length storage tray 10 can be fixed to the upper part of the transmitter unit 20. As shown in FIG. 4, a plurality of resin screws 23 are screwed onto the second chassis 20b as spacers between the extra length storage tray 10 and the second chassis 20b. The head of the resin screw 23 functions as a spacer, and the resin head is smooth, so that the extra length storage tray 10 can be smoothly slid on the second chassis 20b.

3 and 4, a power supply unit 40 is accommodated in the upper case 3, and the power supply unit 40 includes a power supply unit chassis 41 having a built-in power supply circuit. Rectangular storage holes 40a are formed in steps on both sides. The configuration of the power supply chassis 41 is shown in FIGS.
FIG. 15 is a plan view showing the configuration of the power supply unit chassis 41, FIG. 16 is a side view showing the configuration of the power supply unit chassis 41, and FIG. 17 is a front view showing the configuration of the power supply unit chassis 41. As shown in these drawings, the power supply unit chassis 41 includes a rectangular parallelepiped power supply circuit storage unit 41a, and a long plate for attachment is extended outward from the bottom edge on the long side. On the upper surface of the power supply circuit storage portion 41a, two elongated rectangular storage holes 40a are formed in two steps at positions corresponding to the positions of the hooks 10b of the extra length storage tray 10. In addition, a plurality of attachment pieces 41b to which a power supply circuit board built in the power supply circuit storage portion 41a is attached are formed inward at the lower portion of the power supply circuit storage portion 41a.

Next, an operation process for exchanging the transmitter unit 20 will be described with reference to FIGS. 5 and 6.
5 and 6 are side views showing the state in which the upper case 3 is opened from the lower case 2 in a sectional view. FIG. 5 shows a state in which the extra length storage tray 10 is removed from the second chassis 20b of the transmitter unit 20. It is shown. When removing the extra-length storage tray 10 from the second chassis 20 b of the transmitter unit 20, first, the optical plug provided at the end of the optical fiber 11 is removed from the optical connector 21. Next, when the knob screw 13 is loosened and removed from the screw portion 25d of the second chassis 20b, the screw portion 13a is pushed up from the base portion 13c by the action of the spring 16b. Accordingly, the extra length storage tray 10 can be slid with respect to the second chassis 20b without the screw portion 13a getting in the way, and after the slide, the hook 10b is extracted from the storage hole 25c, as shown in the figure. The long storage tray 10 can be removed upward from the second chassis 20 b of the transmitter unit 20.

Next, the removed extra-length storage tray 10 is moved onto the upper case 3 to align the two hooks 10b of the extra-length storage tray 10, and the storage holes 40a formed on the upper surface of the power supply unit 40, respectively. Insert it inside. Then, by sliding the extra length storage tray 10 so that the hook 10b engages with the accommodation hole 40a, the extra length storage tray 10 in which the extra length portion of the optical fiber 11 is stored is temporarily fixed on the power supply unit 40. can do. In this state, when the two Tx attachment screws 22 are loosened and removed from the lower case 2, the transmitter unit 20 can be removed upward from the lower case 2 as shown in FIG. Then, the replaced transmitter unit 20 is mounted in the lower case 2 in the reverse order to the above, and the temporarily stored extra length storage tray 10 is fixed on the transmitter unit 20 in the reverse order to the above. The unit 20 can be exchanged simply by performing a simple operation.
As shown in FIG. 6, a metallic third chassis 20c is fixed to the lower surface of the transmitter unit 20 and is electrically closed. The upper surface of the first chassis 20a is the second chassis 20a, and the lower surface is In the transmitter unit 20 covered with the third chassis 20c, the shield unit 24a in which each board is stored is electrically shielded so as not to receive noise or the like from the outside. Further, even if the transmitter unit 20 is removed from the lower case 2, the bottom plate chassis 30 to which the messenger wire 11a is attached is fixed in the lower case 2, so that the transmitter unit 20 can be connected without removing the messenger wire 11a. Can be interchangeable.

  In the above description, the optoelectronic device is a gap filler transmitter. However, the present invention is not limited to this, and the present invention can be applied to an optoelectronic device including a surplus length storage portion that stores a surplus length portion of an optical cable.

1 transmitter, 2 lower case, 2a hinge part, 3 upper case, 4a optical fiber input part, 4b transmission output terminal, 4c monitor terminal, 4d power input part, 5 mounting bolt, 10 extra length storage tray, 10a tray chassis, 10b hook, 11 optical fiber, 11a messenger wire, 12 clip, 12 locking piece, 12a insertion frame, 12b locking piece, 12c elastic contact piece, 12c elastic contact side, 12d hook, 13 screw with knob, 13a screw part, 13b Spring, 13c Locking piece, 13c Base, 14a Clip mounting hole, 14b Groove, 16b Spring, 20 Transmitter, 20a First chassis, 20b Second chassis, 20c Third chassis, 21 Optical connector, 22 Tx mounting screw , 23 Resin screw, 24a Shield part, 24b Mounting piece, 24c Plate, 25a chassis plate, 25b screw insertion hole, 25c accommodating hole 25d threaded portion, 25e insertion hole 30 bottom plate chassis 40 power supply unit, 40a receiving hole, 41 a power supply unit chassis, 41a power circuit housing portion, 41b mounting piece

Claims (3)

An optoelectronic device comprising a case that is configured to freely open and close the upper case to the lower case, and an optical fiber is introduced into the case,
A transmitter chassis in which a first storage hole is formed on the upper surface and stored in the lower case;
A circuit unit to which an optical signal from the optical fiber is input, and the circuit unit is built in the transmitter chassis;
A surplus length storage tray in which a surplus length portion of the optical fiber is accommodated, and a plurality of hooks that can be inserted into the first accommodation holes formed in the transmitter chassis are formed in a lower portion;
A power supply chassis that is housed in the upper case and has a second housing hole formed on the upper surface into which the hook of the extra-length storage tray can be inserted;
A power supply unit built in the power supply unit chassis,
By fitting the hook of the extra length storage tray into the first accommodation hole formed in the transmitter chassis, the extra length storage tray is detachably mounted on the transmitter chassis,
In a state where the lower case and the upper case are opened, the extra length storage tray is removed from the transmitter chassis, and the hook of the extra length storage tray is formed on the power supply chassis. An optoelectronic apparatus characterized in that the extra-length storage tray can be temporarily fixed to the power source chassis by being inserted into the storage hole.   2. The optoelectronic apparatus according to claim 1, wherein the transmitter section is detachably attached to the lower case by screw means.   The transmitter unit includes an optical receiver that receives an optical signal from the optical fiber and converts the optical signal into an electrical signal, and a transmitter that transmits an electrical signal output from the optical receiver, and the power supply unit 2. The optoelectronic apparatus according to claim 1, wherein power is supplied to the transmitter unit.

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