JPH0591380A - Lobby interphone with camera - Google Patents

Abstract

PURPOSE:To provide the lobby interphone with a camera in which dew condensation caused in a gap formed between an inner box accommodating a camera block and a light guide window of a decoration panel is prevented, excellent corrosion proof is attained and a sharp video image is displayed. CONSTITUTION:In the lobby interphone with a camera where a surrounding wall 5c projecting toward the rear side is provided in a flange 5b and an inner box 5 in which a camera block 6 is accommodated in the inside of the surrounding wall 5c while a camera lens 6a is directed to a light guide window 1b formed to the decoration panel 1 is mounted onto a rear side of the decoration panel 1, air duct holes 1e, 5e are formed to the upper part of the decoration panel 1 and a flange 5b of the inner box 5 and a gap is formed between a camera lens 6a of the camera block 6 and the decoration panel 1 and an air duct use notch hole 5g is formed to a raise part 5 formed to the front side of the inner box 5.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a lobby intercom with a camera having a built-in camera block, and in particular, a measure is taken to prevent dew condensation in a gap formed in front of a camera lens of a translucent window of a decorative panel. Regarding the lobby intercom with camera.

[0002]

2. Description of the Related Art A lobby intercom with a camera is installed at a front door of a dwelling unit, and when a visitor operates a numeric keypad of the lobby intercom with a camera and inputs a dwelling unit number, a camera installed in the lobby intercom is visited by the visitor. Is displayed on a monitor TV in a room connected to the camera, and the entrance door can be opened by an operation from the room side, which is a front panel of the lobby intercom with camera. In the rear,
An internal box with a built-in camera block is integrally combined and embedded in the wall at the entrance, and the light is incident through a transparent window made of a transparent resin plate that forms a part of the decorative panel. It's designed to show the video of.

As shown in FIG. 5, the conventional lobby intercom with a camera constructed as described above has an enclosure wall 5c which projects rearward inside the flange portion 5b of the inner unit box 5, as shown in FIG. Is formed, and the necessary circuit components are housed therein together with the camera block, and the lens surface 6a of the camera block 6 housed in the surrounding wall 5c is formed on the decorative panel 1 from the rear surface of the decorative panel 1 to the translucent window 1b. The gap P1 is formed between the inner surface of the decorative panel 1 and the lens surface 6a of the camera block 6 by being partitioned by the upright portion 5d formed on the surface of the inner container box 5.
Since the space P2 partitioned by the flange portion 5b and the upright portion 5d of the inner container box 5 and the space P3 in the wall W partitioned by the flange portion 5b of the inner container box 5 are separated and independent from each other. The circulation of outside air in the gap P1 was blocked.

[0004]

For this reason, in the conventional structure, when the outside temperature changes to a low outside temperature such as winter and night, a rapid temperature difference occurs between the temperature inside the gap and the outside temperature. Then, dew R is generated on the back surface of the decorative panel in the gap and corrodes the inside of the lobby intercom with camera,
Not only does this lead to breakdowns in the electrical system, but the images taken by the camera are also unclear and distorted. The present invention has been made in view of such circumstances, and it is possible to provide abrupt temperature change by configuring the back surface of the decorative panel and the front surface of the camera lens of the camera block to have air permeability to the outside air. It is an object of the present invention to provide a lobby intercom with a camera that can prevent dew condensation on the inner surface of a light-transmitting part of a decorative panel even when the change occurs and can eliminate unclear and distorted images.

[0005]

A lobby intercom with a camera according to the present invention, which is proposed to achieve the above-mentioned object, is the one as proposed in claim 1, in which an enclosure wall projecting rearward inward of a flange portion. Is installed inside the wall,
A lobby intercom with a camera, which is configured by assembling an inner box containing a camera block with a camera lens facing a light-transmitting window formed on a decorative panel on the back surface of the decorative panel, which is above the decorative panel. , A ventilation hole is formed in the flange portion of the internal unit box, and the standing portion formed on the front side of the internal unit box is formed so as to form a gap between the camera lens of the camera block and the decorative panel. It has a structure with ventilation notches. Further, the structure proposed in claim 2 has a structure in which the ventilation cutout hole is formed in the side wall of the standing portion formed in the front surface of the inner container box.

[0006]

According to the lobby intercom of the present invention as described above, even when the outside air temperature is drastically lowered as in winter and night, the outside air entering through the ventilation hole formed in the upper part of the decorative panel is Inside the gap formed between the camera lens of the camera block and the decorative panel through the ventilation hole formed in the flange part of the container box and the ventilation notch hole formed in the side wall of the upright part formed on the front side of the inner container box. Break into the
Further, since the air enters into the space formed in the wall from the inside of the gap through the ventilation hole formed in the flange portion, the temperature of the gap and each space also decreases as the outside air temperature decreases. Therefore, the problem of dew condensation that has occurred in the gap formed between the rear surface of the decorative panel and the front surface of the camera lens can be prevented (claim 1). Further, the ventilation to the gap formed between the back surface of the decorative panel and the front surface of the camera lens, which is proposed in claim 2, is performed on the side wall of the standing portion formed on the front side of the internal unit box. Since it is performed through the cutout hole, even if rainwater or the like enters from the upper end of the decorative panel or the like, there is no risk of wetting the internal camera block and electric parts.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a partially cutaway front view of a camera-equipped lobby intercom according to the present invention, FIG. 2 is a rear view of the same, and FIG. As shown in these figures, the camera-equipped lobby intercom includes a makeup panel 1,
The decorative panel block 10 is formed integrally with the inner container box 5 in which the flange portion 5b is formed around the surrounding wall 5c so that the decorative panel block 10 can be attached to the attachment frame member 11 embedded in the wall surface W outside the entrance. Has become. The decorative panel 1 has a vent hole 1 at its upper end for introducing outside air.
e and 1e are formed, and in place of the decorative panel 1 surface having the rib frame 1a protruding rearward from the outer peripheral end,
Although the resin-integrally-molded product includes the transparent window 1b made of a transparent member and the display portion 1c, it may be formed of a metal plate or the like in which transparent glass or the like is fitted in the transparent window 1b.
One of the inner unit boxes 5 is integrally molded by resin molding, and has a backside of a surface 5a having an opening for exposing a part of electric components such as a numeric keypad 2, a doorphone 7, a camera block 6 and a display section 1c which will be described later. And a flange portion 5b that constitutes a connecting portion between the decorative panel 1 and the mounting frame member 11.
To form a box body around which an enclosure wall 5c having an open rear surface is provided. Inside the enclosure wall 5c,
A central partition wall 5h is provided so that electronic components such as the numeric keypad 2, the doorphone 7, the camera block 6, the display unit 1c, and the circuit board can be mounted. A back plate 9 is screwed to the back opening of the inner unit box 5, and a signal line L1 extends from an opening 9a formed in the back plate 9, and an electric connection line L2 and a camera cord L3. And are extended, and these are connected to a monitor device or the like in each room.

A window 5f is formed on the surface 5a of the inner box 5 as described above, and a camera lens 6a on the front surface of the camera block 6 is projected from inside the window 5f. The front surface 5a is provided with an upright portion 5d having a front and rear opening and having a low front-rear height, and a slit-shaped ventilation cutout hole 5g is formed on a side wall of the upright portion 5d. The inner unit box 5 and the decorative panel 1 are in contact with the rear surface of the decorative panel 1 from inside the rib frame 1a, and are integrally combined by screwing a screw 15 from the rear of the flange portion 5b toward the decorative panel 1, A gap P1 is formed between the back surface of the decorative panel 1 and the camera lens 6a of the camera block 6. Further, the flange portion 5b of the internal unit box 5 described above.
A space P2 is also formed between the front surface, the standing portion 5d and the rib frame 1a of the decorative panel 1, and a space is also formed between the inner container box 5 embedded in the wall W and the wall W. P3
Are formed. The spaces between these spaces P2, P3 and the gap P1 are originally lacking in breathability because they are partitioned, but in the lobby intercom of the present invention, the flange portion near the camera block 6 is provided. A plurality of ventilation holes 5e are formed on the upper and lower sides of the space 5b to form a space P2.
And the ventilation hole 5 between P3 and P3.
A rib frame of the decorative panel 1 is also formed in the upright portion 5d on the side of e by vertically forming a plurality of slit-shaped ventilation cut-out holes 5g in order to provide air permeability between the gap P1 and the space P2. The ventilation holes 1e formed in the upper end of the la 1a have a structure that provides ventilation with the outside air introduced through the ventilation holes 1e.

FIG. 4 is an enlarged sectional view taken along the line AA in FIG. 2. In FIG. 4, the same parts as those in FIGS. 1 to 3 are designated by the same reference numerals. As shown in FIG. 4, the transparent window 1b of the decorative panel 1 is located on the front surface of the camera lens 6a projecting from the opening 5f of the surface 5a of the inner box 5 with a slight gap. Therefore, as described above, when the outside air temperature suddenly decreases, a temperature difference between the temperature inside the gap P1 and the spaces P2 and P3 and the outside air temperature is originally generated, and the rear surface of the translucent window 1b or Condensation is likely to occur on the back surface of the inner unit box 5,
In the lobby intercom of the present invention, as described above, the outside air and the inside of the space P2 are provided with the air permeability to the outside air,
Further, since the space P2 and the space P3 and the gap P1 are also permeable to the outside air, the outside air easily enters the gaps P1 and the spaces P2, P3. The temperature difference from the ambient temperature does not increase, and it is possible to prevent dew condensation from occurring on the back surface of the transparent window 1b.

[0010]

As can be understood from the above description, according to the lobby intercom with camera of the present invention proposed in claim 1, a gap formed between the back surface of the decorative panel and the front surface of the camera block. The structure that ensures air permeability between the outside and the outside air causes dew condensation on the back surface of the transparent window of the decorative panel on which the camera lens is placed, even if the outside air temperature drops sharply. There is no such thing. Therefore, the image captured by the camera lens behind the light-transmitting window is not blurred or distorted by dew condensation, and a good image can always be captured regardless of changes in outside air temperature and the like. .. Further, according to the lobby intercom with camera proposed in claim 2, since the ventilation notch hole is formed in the side wall of the standing portion formed on the front surface of the internal unit box, the effect of preventing dew condensation is achieved. In addition, rainwater that has entered from the top of the decorative panel does not wet the camera block and electrical parts.

[Brief description of drawings]

FIG. 1 is a partially cutaway front view of a lobby intercom with a camera according to the present invention.

FIG. 2 is a rear view of the same.

FIG. 3 is likewise a partially enlarged side sectional view.

FIG. 4 is an enlarged cross-sectional view taken along the line AA in FIG.

FIG. 5 is a plan partial cross-sectional view of a lobby intercom with a camera according to a conventional technique.

[Explanation of symbols]

 W Wall surface 1 Decorative panel 1e Vent hole 5 Internal unit box 5a Surface 5b Flange part 5c Enclosure wall 5d Standing part 5e Vent hole 5g Vent cutout hole 6 Camera block 6a Camera lens

Claims (2)

[Claims] 1. An inner wall box that houses a camera block in which a camera lens is directed to a light-transmitting window formed in a decorative panel is provided inside the flange portion with a surrounding wall protruding rearward. In the lobby intercom with a camera assembled on the back surface of the decorative panel, a ventilation hole is formed above the decorative panel and on the flange portion of the internal unit box, and between the camera lens of the camera block and the decorative panel. A lobby intercom with camera having a structure in which a ventilation cutout hole is formed in a standing portion formed on the front side of the internal unit box so as to form a gap in the interior intercom box. 2. The lobby intercom with camera according to claim 1, wherein the ventilation cutout hole is formed in a side wall of a standing portion of the inner unit box.