JP2504947Y2 - Doorphone with camera - Google Patents

Description

[Detailed Description of the Invention] (Industrial field of application) The present invention relates to a doorphone subunit with a surveillance camera, which is attached to a gate or entrance of a house or the like and confirms a visitor with a video and a voice.

(Prior Art) Conventionally, a door intercom with a camera installed at a gate or entrance and a master installed in a room are used to communicate with a visitor, and an image is captured by a surveillance camera installed in the slave. Door intercoms are generally used in which visitors are displayed on a monitor TV screen provided on a master device.

As shown in FIGS. 2 and 3, this type of intercom subunit with a camera is provided with a camera block d in a housing a composed of a body b and a cover C, and a light receiving lens e of the camera block d. A protective filter f is attached to the front cover C opening g, a speaker h, a microphone m, and a push button switch S are arranged below the filter f, and a decorative plate P is attached. The protective filter f has a double structure with a predetermined interval t so that dew condensation does not occur inside the protective filter f and fogging is prevented. Also, outdoors and the wall surface k
To reduce the temperature difference from the inside and prevent condensation,
As shown in FIGS. 4 and 5, ventilation openings u and v are provided on the lower surfaces of the cover C and the decorative plate p.

(Problems to be Solved by the Invention) In the slave device described in the above-mentioned conventional example, the prevention of dew condensation is incomplete depending on the mounting location and environment, and as shown in FIG.
When mounting the child device using the embedding box w, the fitting surface x of the body b and the cover C is located inside the box w, so that the temperature and humidity in the embedding box w are different from those of the fitting surface x. There is a problem that the inside of the housing a penetrates through the gap, a temperature difference between the inside and outside of the housing a occurs, dew condensation occurs on the inner surface of the protective filter f, and the protective filter f becomes cloudy, so that it is not possible to obtain a clear image of the visitor. is there.

The present invention was devised by focusing on the above situation, and the purpose thereof is to prevent fogging of the front surface of the camera due to dew condensation, prevent deterioration of image quality, and obtain a clear image. It is to provide a doorphone accessory with.

(Means for Solving the Problem) In the present invention, in order to achieve the above-mentioned object, the following technical means were taken.

That is, according to the present invention, in the intercom subunit with camera, the body and the cover are so arranged that the fitting surface of the body forming the slave housing and the cover are located outside and forward of the mounting surface for mounting the slave housing. It is characterized by being formed.

(Operation) According to the present invention, since the fitting surface of the body and the cover is located outside and forward of the mounting surface, the temperature and humidity inside the embedding box leaks from between the outer wall surface of the body. Even if it does, it will flow into the outside air through the gap between the cover and the mounting surface, the water drain hole, etc., and will not enter the housing.

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

In FIG. 1, reference numeral 1 denotes a doorphone subunit with a camera, a surveillance camera block 5 made of a CCD or the like in a subunit housing 4 made up of a body 2 and a cover 3, and a speaker, a microphone, a push button switch, etc., which are not shown. Is stored.

The slave unit housing 4 is composed of a synthetic resin body 2 and a cover 3. An opening 7 is provided on the front surface of the cover 3 in front of the light receiving lens 6 of the camera block 5, and the opening 7 is formed in the opening 7. The protection filter 8 is provided in a single layer or a double layer. The lower flange of the cover 3 is provided with a ventilation / drainage opening (not shown).

Reference numeral 9 denotes a mounting wall such as a gate / entrance, which is provided with a slave device mounting opening 10 in which an embedded box 11 (usually a switch box is used) is mounted, and the periphery of the box 11 is covered with putty or the like. It is hardened with a joint agent to prevent rainwater from entering inside. Then, insert the slave unit housing 4 into the box 11 and attach the body 2 with a mounting screw (not shown).
Fixed by. Next, the decorative plate 12 is attached so as to cover the front surface of the cover 3. The lower flange of the decorative plate 12 is provided with a ventilation / drainage hole (not shown).

Fitting surface 13 between the body 2 of the housing 4 and the cover 3
Has a cover 3 that is significantly shallower than the conventional one so that it is located outside and forward of the mounting surface 9a of the mounting wall 9, and therefore is located outside the embedding box 11 and inside the embedding box 11. The temperature and humidity have no effect.

According to the above-described embodiment of the present invention, the fitting surface 13 of the body 2 and the cover 3 is located outside and forward of the mounting surface 9a, and is located outside the embedding box 11, so that the inside of the embedding box 11 is inside. There is no risk that the hot and humid air will enter the housing 4, and even if the hot and humid air leaks from the embedded box 11,
It communicates with the outside air through a ventilation and water draining hole (not shown) provided in the cover 3 and the decorative plate 12. Therefore, the inner surface of the protective filter 8 in the housing 4 and the light-receiving lens 6 are free from dew condensation and are not fogged, so that the visitor can clearly capture images and obtain good image quality.

(Effect of the Invention) As described above, in the door intercom with camera according to the present invention, the fitting surface of the body forming the slave housing and the cover is positioned outside and forward of the mounting surface for mounting the slave housing. Since the body and the cover are formed, it is possible to prevent the temperature and humidity inside the box from entering the housing, the temperature difference between the inside and outside of the housing is almost eliminated, and the occurrence of dew condensation is prevented to prevent the fogging of the protective filter and the light receiving lens. It is possible to obtain clear images at all times and to fully exercise the monitoring function.

[Brief description of drawings]

FIG. 1 is a partially cutaway plan view showing an embodiment of the present invention, FIGS. 2 to 6 are conventional examples, FIG. 2 is a front view, and FIGS. 3 and 4 are partially broken side views. FIG. 5 is a bottom view of FIG. 4, and FIG. 6 is a transverse enlarged view. 1 ... Door intercom with camera, 2 ... Body, 3 ... Cover, 4 ... Subunit housing, 5 ... Camera block,
6 ... Receiving lens, 8 ... Protect filter, 9a ... Mounting surface, 13 ... Body and cover mating surface.

Claims (1)

(57) [Scope of utility model registration request] 1. A camera block for monitoring a visitor is provided in a slave unit housing composed of a body and a cover, and a protective filter is mounted in front of a light receiving lens of the camera block. In a doorphone subunit with a camera that is embedded in a mounting surface for mounting a container housing, the body and the cover are formed such that a fitting surface between the body and the cover is located outside and forward of the mounting surface. A doorphone subunit with a camera.