JP2010021688A - Video doorphone master unit and video doorphone - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a video doorphone master unit for improving the workability of component assembly to a case, and to provide a video doorphone provided with the same. <P>SOLUTION: The video doorphone master unit includes: a case 1 formed including a front surface case 1a and a back surface case 1b; a monitor 2 for displaying video images transmitted from the camera of a slave unit; a control board 4 where a control circuit is mounted; built-in components including a speaker 5, a microphone 6 and an operation part and disposed in the case; a monitor protective sheet 10p disposed on the back surface side of the front surface case; and a middle plate attached to the back surface side of the front surface case and provided with a monitor housing part 3a having a support edge, wherein the master unit houses the monitor inside the monitor housing part, supports the peripheral edge part on the front surface side of the monitor by the support edge, has the control board mounted on the back surface side and has a gap formed by the support edge of the monitor housing part between the monitor protective sheet and the monitor front surface. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an improved television doorphone master and a television doorphone including the same.

  The master unit in the TV door phone system is provided with a monitor that displays the image on the slave unit side, a monitor protection sheet that is disposed on the front side of the monitor to protect the monitor, a control board, a speaker, a microphone, and an operation unit. .

  In a conventional TV door phone base unit, for example, a case includes a front case and a back case, and a control board, a speaker, a microphone, a monitor, a monitor protection sheet, and an operation component are incorporated. For example, when the monitor, the monitor protection sheet, and the control board are mounted, the monitor and the control board are mounted on the back side of the front case. Many monitor protective sheets are mounted from the front side of the front case.

  In the manufacturing process of the TV door phone main unit, if parts are mounted on both the front and back sides of the front case, the front case is inverted between when it is mounted on the front side of the front case and when it is mounted on the back side. Work efficiency is reduced.

  Further, when the monitor protective sheet is in close contact with the monitor, undesired optical fringes are generated and the appearance of the image is lowered. Therefore, in order to form a certain gap between the monitor surface and the monitor protective sheet, However, since it is necessary to adhere to attach the monitor protective sheet, it is necessary to apply the adhesive in a separate process, which further reduces the work efficiency.

  Furthermore, if a boss or a rib is formed on the back surface of the front panel in order to mount the monitor on the back surface of the front case, sink marks or the like are generated on the front surface side, leading to deterioration in appearance quality.

  It is an object of the present invention to provide a television doorphone master device with improved workability for assembling parts to a case and a television doorphone provided with the same.

  A television doorphone parent device of the present invention includes a case formed by including a front case and a rear case; a monitor for displaying an image transmitted from a camera of the child device; a control board on which a control circuit is mounted; a speaker and a microphone And a built-in component disposed in the case including the operation unit; a monitor protection sheet disposed on the back side of the front case; and a monitor storage unit attached to the back side of the front case and having a support edge The monitor is housed in the monitor housing, and the front edge of the monitor is supported and supported by the support edge, and the control board is mounted on the back side. And an intermediate plate in which a gap is formed by a support edge of the monitor storage portion.

  The present invention allows the following aspects.

  The communication between the TV door phone master unit and the slave unit is performed by connecting them with a predetermined transmission means, for example, a non-polar two-wire transmission line, etc., but either the hands-free method or the press talk method is used. Alternatively, the call may be made by switching between the two. Therefore, in the present invention, the communication method is not particularly limited. The video signal communication method is not particularly limited.

  The case of the TV door phone main unit includes a front case and a rear case, but is preferably formed by molding with an insulating material such as plastics. Moreover, the intermediate plate mentioned later may comprise a part of case trunk | drum. The front case constitutes the front surface of the TV door phone master unit, and is configured so that a housekeeper can perform operations such as talking with a visitor of the slave unit while looking at the monitor. The back case can be provided with functions such as introducing a power source and attaching the master unit to the wall surface.

  The monitor is a video monitor that displays an image transmitted from the slave unit to the TV door phone master unit when the visitor is configured to be able to photograph a predetermined range in front of the slave unit. . For example, a thin and compact display means such as a liquid crystal monitor is suitable.

  The control board is a wiring board on which various circuits on the TV door phone main unit side are mounted. Various circuits include, for example, a base unit interface, a video processing circuit, a monitor drive circuit, a call circuit, a call button circuit, a control circuit that controls each of the above circuits, and a power source for each circuit. A power supply circuit that supplies power is mounted. The monitor driving circuit drives the monitor under the control of the control circuit, displays the video obtained by the video processing circuit, which is photographed on the side of the slave unit, transmitted to the master unit via the transmission means. The call circuit is connected to the slave unit via the master unit interface and the transmission means, and manages a call between the TV door phone master unit and the slave unit.

  The built-in components include a speaker, a microphone, and an operation unit, but other components can be included as desired, and are disposed in the case of the TV door phone master unit. The speaker is a sound-to-sound conversion means for listening to a call from the handset by listening to the TV doorphone base. The microphone is a sound-electrical conversion means that acts when a telephone call is made from the TV door phone master unit to the slave unit. The speaker and the microphone are connected to the call circuit. The operation unit is a part operated on the side of the TV door phone main unit such as a call button. The call button in the operation unit is operated when a call is made from the TV door phone main unit to the sub unit.

  The monitor protection sheet is disposed on the back side of the front case. In addition, the monitor protection sheet can be dropped into the inside of the frame portion and mounted by projecting the frame portion to the back side integrally with the front case at the position where the monitor protection sheet is arranged as desired. Assembling work of the sheet can be facilitated.

  The middle plate supports the monitor and the control board and is placed in the case. In order to be placed in the case, it can be configured to be fastened together with the case or to be fixed in advance to a component of the case, for example, the front case. The intermediate plate is preferably formed by molding an insulating material such as plastics.

  The intermediate plate houses and supports the monitor in the monitor housing portion. The support at this time is performed by the peripheral edge portion on the front side of the monitor being supported by the support edge of the monitor storage portion. The support edge can be formed so as to support at least two sides facing each other, preferably almost the whole or a part of the three sides of the peripheral portion on the front side of the monitor. For example, the support edge of the monitor storage portion can be formed in a claw shape so as to support a part of the peripheral edge portion.

  By assembling the front case and the middle plate after disposing the monitor protective sheet on the back of the front case, the support edge of the monitor storage part is interposed between the monitor protective sheet and the front of the monitor to reduce the thickness of the support edge. Since the corresponding gap is formed, the support edge can function as a spacer between the monitor protective sheet and the monitor front surface. Furthermore, since the outer surface of the support edge of the monitor storage portion can be brought into contact with the back side of the monitor protective sheet, the monitor protective sheet can be fixed at a predetermined position on the front case without bonding. However, if desired, the monitor protective sheet can be adhered to the back surface of the front case using an adhesive or the like.

  Therefore, in the present invention, the support edge is interposed between the monitor protection sheet and the front surface of the monitor, and can act as a spacer between the monitor protection sheet and the monitor.

  Further, the monitor storage unit can be configured such that the monitor is slid along the plate surface of the intermediate plate and introduced into the monitor storage unit or is dropped and stored from the back side of the intermediate plate.

  On the other hand, in order to mount the control board on the back side of the middle plate, the control board can be attached to the back side of the middle plate and fixed to the middle plate using a fixing means such as a screw. If the front case, middle plate, control board, and rear case are fixed together using screws and other fasteners as described above, the number of fixtures used will be reduced, and the number of assembly steps and parts will be reduced. can do. In addition, since the monitor and the control board can be integrated via the intermediate plate, wiring between the monitor and the control board can be performed on the back side of the control board, and the work is facilitated.

  Then, since the support gap of the monitor storage portion is interposed between the monitor protective sheet and the front surface of the monitor, a necessary gap is surely formed between the two, so that the two companies are unnecessarily closely adhered to each other. Nothing will happen. Further, the monitor protective sheet can be assembled from the back side of the front case, which improves workability.

  Next, an embodiment of the present invention in which the operation piece and the movable piece of the operation unit are formed on the intermediate plate by integral molding will be described. The operation unit is, for example, a call button, a switching button, and the like, and when operated, performs a switch operation to switch a call circuit or the like as desired. In addition, the movable parts are parts such as a monitor button, a press talk button, and a display lamp, for example, and these should be mounted movably while applying a forward pressing force to a predetermined hole formed in the front case. Sometimes, a movable part can be made by mounting the above-mentioned part on a movable piece.

  In order to mold the operation piece and the movable piece integrally with the intermediate plate, a plastic material having flexibility is used to integrally form the hinge portion of the operation piece and the spring imparting portion of the movable piece when the intermediate plate is formed. That's fine.

  According to the present invention, the control board is mounted by mounting the control board on the back side, and includes a middle board provided with a monitor storage portion having a support edge for supporting and supporting the peripheral edge of the front side of the monitor. Assembling performance is improved and there is no need to integrally form protrusions such as bosses and ribs on the back of the front case, so appearance defects such as sink marks during molding do not occur and the case appearance quality is improved. A TV door phone main unit and a TV door phone equipped with the same can be provided.

  In addition, the monitor protective sheet is attached to the front case of the TV door phone main unit from the back side of the front case, and the support edge of the monitor housing part of the middle plate is interposed between the monitor surface and the monitor protective sheet. Therefore, it is possible to prevent the monitor protective sheet from coming into close contact with the monitor surface, and to ensure an appropriate view of the monitor.

  Further, much of the assembly work of the TV door phone master unit can be performed on the back side of the front case, and the assembly workability is improved.

  Furthermore, according to the aspect in which the middle board for mounting the control board of the TV door phone main unit on the back side is provided, the assembly of the control board is improved, and the operation piece and the movable piece are formed integrally with the middle board. As a result, the number of molds produced is reduced, parts management is facilitated, and assembly workability is improved.

  Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.

  FIG. 1 to FIG. 4 show an embodiment for implementing a television doorphone master unit and a TV doorphone equipped with the same according to the present invention. FIG. 2 is an exploded perspective view seen from obliquely above, FIG. 3 is a sectional view of the monitor portion of the front case, and FIG. 4 is an enlarged sectional view of a portion B surrounded by a circle in FIG. In addition, in order to understand the structure of this invention, since the subunit | mobile_unit does not need to show in particular detail, it abbreviate | omits illustration.

  In this embodiment, the TV door phone master unit includes a case 1, a monitor 2, a middle plate 3, a control board 4, a speaker 5, a microphone 6, a press talk button 7, a monitor button 8, a display lamp 9, a monitor protection sheet 10, and a not-shown figure. The switching button is configured as a main component.

  The case 1 is formed in a substantially rectangular box shape of a vertically long rectangle having a split structure by tying the front case 1a and the back case 1b. The front case 1a has a monitor display window 11, a microphone sound collecting hole 12, a display lamp hole 13, a switching button hole 14, a call button hole 15, a speaker sound emitting hole 16, a press talk button hole 17, and a monitor button hole 18 from the top. Is formed. Further, a monitor protective sheet storage frame 1a1 protrudes and is integrally formed on the back side of the front case 1 around the monitor display window 11.

  The back case 1b constitutes the back side of the case 1 and is provided with functions such as power supply introduction and attachment.

  The monitor 2 is composed of a liquid crystal display unit, and is disposed at a predetermined position by being housed in a monitor housing portion 3a formed on an intermediate plate 3 described later, and wired to a control board 4 described later.

  The middle plate 3 is accommodated in the back surface portion of the front case 1 and is fixed to a predetermined position in the case 1 by fastening together with the case 1 and a screw (not shown). Further, the intermediate plate 3 includes a monitor storage portion 3a, an operation piece 3b, and a movable piece 3c formed by integral molding.

  In FIG. 1, the monitor storage unit 3a is configured to store the monitor 2 by sliding along the plate surface of the intermediate plate 3 from above, and support edges 3a1, 3a2, 3a3 on the side surface portions and the bottom surface portion, respectively. The rear plate portion 3a4 and the drop-off preventing claw 3a5 are provided. The support edges 3 a 1, 3 a 2, and 3 a 3 support the front side of the three sides of both sides and the bottom of the periphery of the monitor 2. The back plate 3a4 contacts the back of the monitor 2 and supports the back. The drop-off preventing claw 3a5 contacts the upper edge of the monitor 2 so as to prevent the monitor 2 once slid and housed from undesirably moving or dropping from a predetermined position of the intermediate plate 3. A wiring groove 3a6 is formed continuously in the monitor housing portion 3a to guide the wiring between the monitor 2 and the control board 4.

  The operation piece 3b includes first to fourth operation pieces 3b1, 3b2, 3b3, 3b4. The 1st thru | or 3rd operation piece 3b1-3b3 comprises the operation button of three switch button switches (not shown), and is arrange | positioned in the switch button hole 14 of the front case 1a. The 4th operation piece 3b4 comprises the operation button of a call button, and is arrange | positioned in the call button hole 15 of the front case 1a.

  The movable piece 3c constitutes a movable seat 3c1 of the press talk button 7, a movable seat 3c2 of the monitor button 8, and a movable seat 3c3 of the display lamp 9. The monitor button 8 and the display lamp 9 are disposed in the monitor button hole 15 of the front case 1a.

  The control board 4 is a wiring board on which the above-described various circuits on the base unit side are mounted. The control board 4 is attached to the back surface of the intermediate plate 3, and is fixed to the case 1 and the intermediate plate 3 with screws with a predetermined inside of the case. Fixed in position.

  The speaker 5 is screwed to a speaker mounting seat 1c provided on the back side and located on the lower left side of the front case 1a, and is connected to the control board 4 with a lead wire (not shown).

  The microphone 6 is adhered in a recessed portion 3d formed in the middle plate 3 so as to face the microphone hole 15 formed on the right upper and lower sides of the front case 1a, and is attached to the control board 4 with a lead wire (not shown). Connecting.

  The press talk button 7 is composed of a push button switch, and can talk by the press talk method at the time of pressing operation. The press talk button 7 can be movably fitted in the press talk button hole 17 of the front case 1a in the front-rear direction. The movable seat 3c1 formed integrally with the plate 3 is mounted on the front surface of the movable seat 3c1 so as to be movable in the front-rear direction, and is disposed in the press talk button hole 17 of the front case 1a.

  The monitor button 8 is constituted by a push button switch, can operate the monitor 2 at the time of pressing operation, and is attached to the middle plate 3 so as to be movably fitted in the monitor button hole 18 of the front case 1a in the front-rear direction. It is mounted on the front surface of the integrally formed movable seat 3c2.

  The display lamp 9 is configured using, for example, a light emitting diode as a light source, and is mounted on the front surface of a movable seat 3c2 formed integrally with the intermediate plate 3 so as to be movably fitted in the display lamp hole 13 of the front case 1a in the front-rear direction. ing.

  The monitor protective sheet 10 can be incorporated by dropping into the monitor protective sheet storage frame 1a1 on the back of the front case 1a.

  As described above, the monitor 2, the control board 4, and the operation unit are intensively provided on the middle plate 3, so that the monitor protective sheet 10, the middle plate 3, and the rear case 1b are assembled in this order from the rear side of the front case 1a. Is completed. For this reason, it is not necessary to change the direction of the front case 1a in the assembling process, so that work efficiency can be improved and man-hours can be reduced.

  Further, in the structure in which all members are attached from the back side of the front case 1a in this way, the support edges 3a1, 3a2, 3a3 for supporting the monitor 2 provided on the intermediate plate 3 are interposed between the monitor 2 and the monitor protective sheet 10. In order to create the gap, there is no need to provide another member such as a sheet between the monitor 2 and the monitor protection sheet 10. In addition, since the gap between the monitor protection sheet 10 and the monitor 2 can be secured, the two can be arranged close to each other, so that there is also an effect that the television door phone master unit can be thinned.

1 is an exploded perspective view of a TV doorphone main unit and a TV doorphone main unit according to an embodiment of the present invention, as viewed from diagonally forward. Similarly, an exploded perspective view seen from the upper rear A cross-sectional view of the same monitor section Enlarged sectional view of part B surrounded by a circle

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Case, 1a ... Front case, 1a1 ... Monitor protection sheet storage frame part, 1b ... Back case, 2 ... Monitor, 3 ... Middle plate, 3a ... Monitor storage part, 3a1, 3a2, 3a3 ... Support edge, 3a4 ... Back Face plate portion, 3a5 ... drop-off prevention claw, 3a6 ... wiring groove, 3b ... operation piece, first to fourth operation pieces 3b1 ... first operation piece, 3b2 ... second operation piece, 3b3 ... third operation piece 3b4 ... fourth operation piece, 3c ... movable piece, 3c1 ... movable seat of the press talk button, 3c2 monitor button, 3c3 ... movable seat of the display lamp, 3d ... concave portion, 4 ... control board, 5 ... Speaker, 6 ... Microphone, 7 ... Press talk button, 8 ... Monitor button, 9 ... Display lamp, 10 ... Monitor protective sheet, 11 ... Monitor display window, 12 ... Microphone sound collection hole, 13 ... Display lamp hole, 14 ... Switch button hole 15 ... call button hole, 16 ... speaker sound emission hole, 17 ... press-to-talk button hole, 18 ... monitor buttonhole

Claims (3)

A case formed including a front case and a back case;
A monitor that displays the video transmitted from the slave camera;
A control board mounted with a control circuit;
Built-in components arranged in the case including a speaker, a microphone and an operation unit;
A monitor protective sheet disposed on the back side of the front case;
A monitor storage unit that is attached to the back side of the front case and has a support edge, stores the monitor in the monitor storage unit, and supports and supports the peripheral edge of the front side of the monitor with the support edge. A middle board having a control board mounted on the side and forming a gap between the monitor protective sheet and the monitor front surface by a support edge of the monitor housing;
TV door phone main unit characterized by comprising.   2. The TV door phone main unit according to claim 1, wherein the intermediate plate has a control board mounted on the back side, and an operation piece and a movable piece of the operation unit are formed by integral molding. A handset with a camera;
The TV doorphone master unit according to claim 1 or 2, wherein a video transmitted from the slave unit is displayed and a call is made with the slave unit;
A TV door phone characterized by comprising:

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