JP2000080864A - Door monitor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To mount a door monitor formed by a combination of a CCD camera and a liquid-crystal display, without selecting the thickness of a door. SOLUTION: In a door monitor including a CCD camera 2 and a liquid-crystal display 4 and mounted by burying in a door, the liquid-crystal display 4 is held on the front of a monitor main body case 31, together with an operating switch 5, and the CCD camera 2 is placed on the back of the main body case in such a manner that its projected height position is adjustable.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door monitor which comprises a combination of a CCD camera and a liquid crystal display and which can be buried and mounted on a door of any thickness.

[0002]

2. Description of the Related Art As a door monitor of this type, as shown in FIG. 4, a display (41), a CCD camera (2) and an operation switch are provided in a main body case (31).
(5) A battery (36) is proposed (Japanese Utility Model Registration No. 3001552).

[0003] The thickness of doors used in houses, hotels, offices, etc., is of the order of 28 to 40 mm. There are various types of doors. Various types of main body cases (31)
Must be manufactured, which hinders the cost reduction of the door monitor.

The present invention is to clarify a door monitor which can be embedded and attached to a general door regardless of its thickness.

[0005]

The door monitor according to the present invention comprises a CC.
In a door monitor including a D camera and a display, which is embedded in a door and mounted on a door, the display is a liquid crystal display (4), and the liquid crystal display (4) is operated together with an operation switch (5) on a front surface of a monitor body case (31). , And a CCD camera (2) is provided on the rear surface of the main body case (31) so as to be able to adjust the projecting height position.

[0006]

[Operation and Effect] With the main body case (31) embedded and mounted in the door (1), the lens portion (21) of the CCD camera (2) corresponds to the outdoor surface of the door (1). , CCD camera (2)
By adjusting the position of the protruding height from the main body case (31), even doors having different thicknesses can be attached. It is not necessary to make the monitor body case (31) according to the thickness of the door, and since one model has versatility, the cost can be reduced.

[0007]

FIG. 1 is a perspective view of a door monitor according to the present invention as viewed from the rear side (outside of the door when mounted on a door). The door monitor includes a CCD camera (2) and a monitor body (3).

The case (31) of the monitor body (3) is vertically long, and has a concave step (31a) formed on the upper rear surface and a mounting flange (30) on the outer peripheral edge of the front surface. A liquid crystal display (4) and a cold-cathode flat fluorescent lamp (6) as a backlight are built in substantially at the center of the main body case (31), and a window hole (35) in the front of the case is provided.
And a liquid crystal display (4). Body case
The lower part of (31) is a battery housing part (32), and a cover plate (33) of the battery housing part (32) is provided on the front surface of the case.

An operation switch (5) is provided between the liquid crystal display (4) and the cover plate (33) on the front surface of the main body case (31).

A concave step (31a) on the back of the main body case (31).
A CCD is provided on the top so that the protrusion height from the concave step (31a) can be adjusted
A camera (2) is provided. The CCD camera (2) has a lens unit (2) on a substrate (22) on which a circuit is formed and electronic components are mounted.
It is a known device provided with 1).

The mounting method of the CCD camera (2) of the embodiment is as follows.
Four screw shafts on the concave step (31a) on the back of the body case (31)
(7) is projected, each screw shaft (7) penetrates the four corners of the substrate (22), and a nut (8) is screwed to the screw shaft (7) with the substrate (22) interposed therebetween. Loosen the nut (8), slide the CCD camera (2) on the screw shaft (7), and fix the CCD camera (2) at an arbitrary position on the screw shaft (7) by tightening the nut (8). it can.

CCD camera (2), liquid crystal display
(4), cold cathode flat fluorescent lamp (6), operation switch (5),
A circuit board (not shown) for electrically connecting the battery housing (32) and operating the operation switch (5) to display a signal captured by the CCD camera (2) on the liquid crystal display (4) as an image. It is built in the main body case (31).

In order to mount the door monitor on the door (1), a through hole (11) for exposing the lens portion (21) of the CCD camera (2) is opened in the outdoor surface of the door (1). A mounting hole (12) for fitting the main case (31) excluding the flange (30) is opened on the indoor side surface of the door (1), and the filler inside the door is filled with the main case.
Remove so as not to hinder the installation of (31).

The height of the projecting height of the CCD camera (2) from the rear concave step (31a) of the main body case (31) is adjusted according to the thickness of the door (1). Set the door monitor in the monitor mounting hole (12) of the door (1), and place the flange (30) on the body case (31).
To the door with screws (34). Waterproof, through the through hole (11) of the door (1) corresponding to the lens part (21) of the CCD camera (2).
Attach a dustproof transparent lid (9).

When the operation switch (5) is pressed, the door
The image of the visitor standing in front of (1) is displayed on the liquid crystal display (4). Since the backlight of the liquid crystal display (4) is a cold-cathode flat fluorescent lamp (6), the liquid crystal display (4) can be illuminated instantaneously with high responsiveness after pressing the operation switch (5).

As described above, the door monitor of the present invention has a structure in which the main body case (31) is embedded in the door (1) and mounted.
Adjust the position of the CCD camera (2) so that the lens part (21) of the CD camera (2) corresponds to the outdoor surface of the door (1) from the body case (31). Thereby, doors having different thicknesses can be attached. It is not necessary to make the monitor body case (31) according to the thickness of the door, and since one model has versatility, the cost can be reduced.

The thickness of the monitor body (3) is limited by the type of battery used, that is, the thickness of the battery housing (32). Within this thickness, the liquid crystal display (4) and the cold cathode flat fluorescent light are used. It is possible to incorporate the lamp (6) and other necessary circuit boards. If it is for AA batteries, the monitor body (3)
Can be buried in doors as thin as 25mm, so there is no problem with mounting on ordinary doors.

When the CCD camera (2) is fixed on the screw shaft (7) protruding from the main body case (31) as described above, the length of the screw shaft (7) is set to the thickest door. The corresponding length,
In order to attach the door monitor to a thin door, if the screw shaft (7) is too long to be in the way, the tip of the screw shaft (7) may be cut off with pliers or the like. The present invention is not limited to the configuration of the above embodiment, and various modifications are possible within the scope of the claims.

[Brief description of the drawings]

FIG. 1 is a perspective view from the back side of a door monitor.

FIG. 2 is a cross-sectional view of the monitor attached state.

FIG. 3 is a front view of a door monitor.

FIG. 4 is a sectional view of a conventional door monitor in an attached state.

[Explanation of symbols]

 (1) Door (2) CCD camera (3) Monitor body (31) Main body case (4) Liquid crystal display (5) Operation switch (6) Cold cathode flat fluorescent lamp

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Masazo Sugishita Ichiban-ichi, Sanyo-cho, Daito-shi, Osaka Sanyo Electronics Parts Products Co., Ltd. (72) Haruo Isono Ichiban-ichi, Sanyo-cho, Daito-shi, Osaka Sanyo (72) Inventor Toshiyuki Murai 1st Sanyo-cho, Daito-shi, Osaka Sanyo Electronics Parts Co., Ltd.

Claims (3)

[Claims] 1. A door monitor including a CCD camera and a display, which is embedded and mounted on a door, wherein the display is a liquid crystal display (4), and the liquid crystal display (4) is operated together with an operation switch (5) together with a monitor body case. (31), and C on the back of the body case (31).
A door monitor in which a CD camera (2) is provided so that the projecting height can be adjusted. 2. A plurality of screw shafts (7) protrude from the back of the monitor body case (31), and the screw shafts (7) are connected to a CCD camera.
Penetrate the substrate (22) of (2), and screw the
The door monitor according to claim 1, wherein a nut (8) is screwed into (7). 3. The door monitor according to claim 1, wherein the backlight of the liquid crystal display is a cold cathode flat fluorescent lamp.