JP5490586B2 - Electronic equipment unit - Google Patents

Description

  The present invention relates to an electronic device unit having an electronic display means such as a liquid crystal panel, and more particularly to an electronic device unit having a waterproof function.

  2. Description of the Related Art Conventionally, there is an electronic device unit in which a case is composed of two members, an upper case and a lower case, and a liquid crystal panel is attached to the case on the front side of the case. For example, in the intercom shown in Patent Document 1, a main body case (on the case) and a rear body chassis (below the case) form a box-type case, and a liquid crystal panel is assembled on the back surface of the case.

JP 2005-117445 A

However, when the configuration in which the liquid crystal panel is attached from the back side on the case as in the interphone of Patent Document 1 described above is applied to a device that is used outdoors (for example, an intercom entrance unit), rainwater enters the case. In order to prevent intrusion, not only the liquid crystal panel mounting portion but also the fitting portion on the case and under the case must be provided with a structure for preventing rainwater from entering.
Specifically, with respect to the fitting part on the case and under the case, in order to prevent the water that has entered from the fitting part from further entering the case, a belt-like rib that becomes a wall must be provided around the case. Don't be. For this reason, a space for providing ribs is required both above and below the case, and in order to use it outdoors, the equipment must be larger or the liquid crystal panel must be smaller than the indoor specifications. It was.

  Therefore, in view of such a problem, the present invention has a configuration in which electronic display means such as a liquid crystal panel is mounted on the case, even if the case is not enlarged and the electronic display means is not downsized. It is an object of the present invention to provide an electronic device unit that can prevent rainwater from entering from the boundary and can be installed outdoors.

In order to solve the above-mentioned problem, the invention of claim 1, the electronic circuit is accommodated in a case formed by fitting the case and the case below, the electronic display means is attached on the case, The electronic device unit has an upper rib formed in a band shape to prevent rainwater from entering on the back surface of the electronic device, and the case has a recess for accommodating the electronic display means on the surface, and the inside of the recess Is formed with an opening for inserting a wiring connecting the electronic display means and the internal electronic circuit, and the upper rib passes through and fits on the back of the recess outside the opening. It has a height in contact with or close to the inner surface under the case.
According to this configuration, the band-shaped ribs for preventing the intrusion of rainwater from the boundary between the case and the bottom of the case by assembling the electronic display means from the front side on the case on the back side of the case, which is the back of the electronic display means. Can be provided. Therefore, it is not necessary to provide a space for arranging the rib between the electronic display means and the side part on the case, and the electronic display means can be adapted for outdoor use without downsizing or upsizing the case. it can.

According to a second aspect of the present invention, in the configuration according to the first aspect, the inner surface under the case corresponding to the upper rib is doubled so as to face the inner side and the outer side of the upper rib in the case. A band-shaped lower rib is formed.
According to this configuration, since the ribs are provided in triplicate, it is possible to reliably prevent rainwater from entering.

  According to the present invention, by attaching the electronic display means from the front side on the case, the belt-like ribs for preventing the intrusion of rainwater from the boundary between the case and the case are provided on the back side of the case which is the back of the electronic display means. Can be provided. Therefore, it is not necessary to provide a space for arranging the rib between the electronic display means and the side part on the case, and the electronic display means can be adapted for outdoor use without downsizing or upsizing the case. it can.

It is a perspective view on the case which shows an example of the electronic device unit which concerns on this invention. It is the perspective view which looked at the case top of FIG. 1 from the back. It is a perspective view of the electronic device unit which attached the decorative panel to the case. It is the perspective view which looked at the electronic device unit of FIG. 3 from the back side. It is a disassembled perspective view of a liquid crystal panel mounting part. It is a part enlarged view of the liquid crystal panel attachment part on a case. It is the elements on larger scale on the case which attached the liquid crystal panel. It is a cross-sectional view of the liquid crystal display part of FIG. It is the A section enlarged view of FIG. It is the B section enlarged view of FIG. FIG. 9 is a cross-sectional view of a liquid crystal display unit corresponding to FIG. 8 in which a packing or the like attached to the front surface of the liquid crystal panel is separated and the bottom of the case is omitted.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, embodiments of the invention will be described in detail with reference to the drawings. 1 to 4 are perspective views showing an example of an electronic device unit according to the present invention. FIG. 1 is a perspective view on a case in which main members are assembled. FIG. 2 is a perspective view of the case as viewed from the back side. FIG. 3 is a perspective view of the electronic device unit in a state where the decorative panel is attached and actually constructed, and FIG. 4 is a perspective view of FIG. 3 viewed from the rear. In each figure, 1 is a case, 2 is a decorative panel, and the electronic device unit shown here is an interphone device that is installed outdoors such as a front door to call a resident and make a call. Therefore, a camera 3, a microphone unit 4, a speaker unit 5, an operation unit 6, a liquid crystal display unit 7, a call button 8 and the like are provided on the front surface.

  The case 1 is composed of two members, a case upper 1a constituting the front surface side provided with the operation unit 6, the liquid crystal display unit 7 and the like, and a case lower 1b constituting the case back, and the circuit is formed by fitting both of them. An accommodation space for accommodating a substrate or the like is formed inside. And the liquid crystal display part 7 is arrange | positioned in the approximate center of the case top 1a, and the liquid crystal panel 10 mentioned later is assembled | attached to this liquid crystal display part 7. FIG.

  Hereinafter, the mounting structure of the liquid crystal panel 10 will be mainly described. FIG. 5 shows a part of an exploded perspective view of the intercom device showing how the liquid crystal panel 10 is assembled to the case 1, and FIG. 6 shows an enlarged view of the upper case 1a of FIG. In FIG. 5, 11 is a circuit board assembled in the case 1 formed by the case upper 1a and the case lower 1b, 12 is a fixing frame for fixing the liquid crystal panel 10 to the case upper 1a, and 13 is the periphery of the liquid crystal panel 10 A seal 14 for sealing the liquid crystal panel 10 protects the liquid crystal panel 10.

  As shown in FIG. 6, a rectangular recess 16 for attaching the liquid crystal panel 10 is formed on the front side of the case 1a, and the liquid crystal panel 10 and a circuit board 11 as an internal electronic circuit are further provided on the bottom 16a. A wiring insertion port 17 for connection is formed as an opening. And two screw holes 18 for fixing the liquid crystal panel 10 to the case top 1a are provided at the left and right end portions of the bottom portion 16a.

The liquid crystal panel 10 has a rectangular plate shape, and is provided with screw insertion holes 10a for fixing to the upper case 1a with screws at left and right ends.
The fixed frame 12 is a synthetic resin square frame that engages with the periphery of the liquid crystal panel 10, and a pair of claw pieces 20 project rearward from the left and right ends. Then, it is formed in a shape that matches the recess 16. Note that locking holes 21 for inserting and locking the claw pieces 20 are provided at the four corners of the corresponding case 1a concave portion 16.

  The packing 13 is a frame piece made of foamed resin, rubber, or soft resin. The packing 13 overlaps the fixed frame 12 and has an outer shape slightly larger than the fixed frame 12.

  The panel cover 14 is a plate made of a transparent synthetic resin, and extends from the central window portion 14a for protecting the liquid crystal panel 10, the peripheral frame portion 14b that presses the packing 13, and the peripheral frame portion 14b. And a screw insertion hole 14c for screwing to the upper case 1a provided at the upper and lower four locations. In addition, the screw hole 22 is formed in the periphery of the recessed part 16 of the corresponding case top 1a.

As shown in FIG. 5, these members are assembled in the order of the liquid crystal panel 10, the fixed frame 12, the packing 13, and the panel cover 14 around the concave portion 16 on the case 1 a. Specifically, the liquid crystal panel 10 is accommodated in the recess 16 and is assembled by being screwed at four places. FIG. 7 shows a state in which the liquid crystal panel 10 is screwed in this way.
The fixed frame 12 inserts and holds the claw pieces 20 provided at two positions on the left and right sides into the locking holes 21 of the case 1a. The fixed frame 12 covers the liquid crystal panel 10 and fills the gap between the periphery of the liquid crystal panel 10 and the recess 16. The packing 13 is disposed from above, and the panel cover 14 is disposed on the packing 13 and screwed.
Thus, the liquid crystal panel 10 is assembled on the case 1a, and the attachment of the liquid crystal panel 10 is completed. Thereafter, as will be described later, the assembly of the case 1 is completed by fitting and integrating with the lower case 1b.

  Next, a fitting structure between the case upper 1a and the case lower 1b will be described. As shown in FIG. 2, a strip-like rib (hereinafter referred to as “upper rib”) 25 is formed on the back surface of the case top 1 a along the frame portion 23 that forms the side surface of the case 1. The upper rib 25 is circumferentially provided along the frame portion 23 except for a part below, so as to prevent rainwater from entering the case 1 when fitted to the case lower 1b. The upper rib 25 is configured to prevent intrusion of rainwater when the case upper 1a and the case lower 1b are fitted with each other in contact with or close to the inner bottom portion of the case lower 1b.

On the other hand, a belt-like rib (hereinafter referred to as “lower rib”) 26 corresponding to the upper rib 25 is formed on the inner surface of the lower case 1b. This will be specifically described with reference to FIGS. FIG. 8 is a cross-sectional explanatory view showing a state in which the case lower portion 1b is fitted to the case upper portion 1a to which the liquid crystal panel 10 is assembled, and shows a cross section of the liquid crystal panel 10 mounting portion. FIG. 9 shows an enlarged view of part A of this cross-sectional view.
As shown in FIG. 9, the upper rib 25 is provided so as to pass over the back surface of the recess 16. The lower case rib 1b is provided with lower ribs 26 (26a, 26b) which are formed in such a manner that the upper ribs 25 are arranged so as to face each other on both the inside and the outside of the case 1. Similarly to the upper rib 25, the lower rib 26 is also provided around the inner surface of the case lower portion 1b except for a part below.
In FIG. 2, reference numeral 24 denotes a screwing portion for screwing the case lower 1b. The fitted case upper 1a and case lower 1b are screwed by the screwing portion 24 to maintain the fitted state. The

FIG. 10 is an enlarged view of a portion B in FIG. 8 and shows a waterproof structure around the liquid crystal panel 10. FIG. 11 is a cross-sectional view of the liquid crystal display unit of FIG. 1 in which the packing 13 attached to the front surface of the liquid crystal panel 10 is separated and the lower case 1b is omitted.
In FIG. 10, 13a has shown the cross section of the packing 13 before compression. As shown in FIG. 10, the packing 13 compressed between the fixed frame 12 and the panel cover 14 seals the boundary between the fixed frame 12 and the case top 1a, and the airtightness around the liquid crystal panel 10 is maintained. .

In this way, by assembling the liquid crystal panel 10 from the front side of the case top 1 a, the strip-shaped upper rib 25 for preventing rainwater from entering can be provided on the back side of the case top 1 a serving as the back of the liquid crystal panel 10. Therefore, it is not necessary to provide a space for arranging the strip-shaped rib between the liquid crystal panel 10 and the frame portion 23 which is a side portion of the case 1a, and the liquid crystal panel 10 is not downsized or the case is enlarged. It can be used outdoors.
Further, in addition to the upper rib 25, the case lower portion 1b is provided with double ribs, and triple ribs are provided as a whole, so that intrusion of rainwater can be reliably prevented.
Further, since the gap can be easily and surely closed by the packing 13, even if the liquid crystal panel 10 is assembled from the front side of the case 1, the boundary with the case 1 generated around the liquid crystal panel 10 is satisfactorily and easily waterproofed. Can be.

In addition, although the said embodiment demonstrated the liquid crystal panel to the example, it is suitable with respect to plate-shaped electronic display means, for example, with respect to electronic display means, such as a plasma display panel, an electroluminescence panel, and a light emitting diode panel. Is also applicable.
Further, one strip-shaped rib is provided on the panel 1a, and a double strip-shaped rib is provided on the panel lower 1b.

  In the above embodiment, the interphone device installed outdoors has been described. However, the structure of the present invention is suitable for an electronic device unit installed outdoors provided with electronic display means such as a liquid crystal panel, and is not outdoors. Both are also suitable for monitor devices used in bathrooms and kitchens that require a waterproof function.

  1 .... case, 1a ... on case, 1b ... under case, 7 .... liquid crystal display unit, 10 .... liquid crystal panel (electronic display means), 11 .... circuit board, 12 .... fixed frame (frame-like frame) Body), 13 ... packing, 14 ... panel cover (cover body), 16 ... recess, 25 ... upper rib, 26 ... lower rib.

Claims (2)

An electronic circuit is accommodated in a case formed by fitting the case on and under the case, an electronic display means is attached on the case, and a back surface on the case is formed in a belt shape to prevent intrusion of rainwater An electronic device unit having a peripheral upper rib,
On the case, a concave portion for accommodating the electronic display means is provided on the surface, and an opening for inserting a wiring connecting the electronic display means and the electronic circuit inside is formed in the concave portion. Being
The electronic device unit according to claim 1, wherein the upper rib is outside the opening and passes over the back surface of the recess, and has a height that is in contact with or close to the inner surface under the fitted case. The inner surface under the case corresponding to the upper rib is formed with a belt-like lower rib disposed in a double manner so as to face both the inner side and the outer side of the upper rib in the case. The electronic device unit according to claim 1.

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