JP2514816Y2 - Entrance TV phone device - Google Patents

Description

[Detailed Description of the Invention] Industrial field of use [Technical Field] The present invention relates to an entrance TV phone device for displaying an image picked up by a child device having a built-in video camera installed outdoors on a parent device including an indoor monitor TV. so,
In particular, it is characterized by the mounting structure of the video camera and auxiliary lighting means built in the slave unit.

2. Description of the Related Art FIG. 2 and FIG. 3 show an example of a conventional slave unit having a built-in auxiliary lighting means.

In FIG. 2 and FIG. 3, reference numeral 1 is a device housing,
The front panel is provided with a window portion to which the transparent plate 2 is fixed. 3 is a camera support, the center of which is
A video camera 5 including a lens 4 is fixed, and a light emitting diode 7 for auxiliary illumination is fixed to the side of the video camera 5 via a light shielding wall 6. This camera support 3
Is movable along the guide grooves 10a, 10b of the support frames 9a, 9b formed in the device casing 1 by the support shafts 8a and 8b in the direction of arrow A, and rotatable by the shafts 8a, 8b. It is supported. The adjustment of the rotation angle of the camera support base 3 and the movement adjustment in the direction of arrow A are performed by operating an adjustment knob provided outside the device casing 1 (not shown). Reference numeral 11 denotes an infrared filter having a through hole 12 that guides an optical image from a subject illuminated through the transparent plate 2 to the camera 5, in order to reduce the internal structure from being observed through the transparent plate 2, that is, Infrared rays from the light emitting diode 7 are transmitted by the infrared filter 11 and the transparent plate 2.
The object 5 is irradiated with the light through the transparent plate 2 and the through hole 12 of the infrared filter 11 and the camera 5 is irradiated with the light from the object.

In the above configuration, when the outside becomes dark, the transparent plate 2 becomes a mirror, and there is a problem that infrared rays from the light emitting diode 7 are reflected by the transparent plate 2 and enter the video camera 5. Therefore, the infrared filter 11 An elastic body 13 such as a sponge was attached around the through hole 12.

However, according to the above configuration, when the camera support 3 is moved around the support shafts 8a and 8b to adjust the imaging range, the elastic body 13 and the transparent plate 2 are separated from each other. Contact was made, the operation of movable adjustment became unstable, and the transparent plate 2 was scratched.

Further, since the elastic body 13 is arranged close to the transparent plate 2, the elastic body 13 can be seen from the outside through the transparent plate 2 to make the visitor aware of the presence of the camera and give an unpleasant feeling. It was

Means for Solving the Problems An entrance TV phone device of the present invention includes a transparent plate fixed to a front panel of a device housing, a TV camera fixed to a support base, and the support base, the camera being the front face. A means for movably supporting the camera so as to change the relative position of the camera and the front panel in a state of being located inside the panel, and a light shielding wall formed on a side surface of the camera, The infrared light emitting diode fixed to the support so as to be located on the side surface of the camera, and the infrared light emitting diode and the panel having a through hole for guiding an optical image from a subject illuminated through the panel to the camera. And an infrared filter fixed to the tip of the light shielding wall so as to be positioned between the front panel and the front panel with a predetermined space, and A light-shielding film is formed on the peripheral surface of the through hole of the infrared filter by an opaque sheet so as not to be close to the transparent plate.

Action As described above, the entrance TV phone device of the present invention forms the opaque film by pasting the opaque sheet on the infrared filter, and therefore the thickness thereof may be thin, and therefore,
Since a sufficient distance from the front transparent plate can be obtained, the inconvenience of contact between the opaque film and the transparent plate at the time of adjustment as in the conventional case is eliminated, and the degree of confirmation from the outside through the transparent plate is reduced. It is a thing.

Embodiment An embodiment of the present invention will be described below with reference to FIG.
In FIG. 1, the same components as those of the conventional configuration shown in FIG. 2 are designated by the same reference numerals. The difference between this embodiment and the conventional example is that the opaque film 15 is formed by directly pasting an opaque sheet on the infrared filter 11 instead of the elastic layer 13 having the conventional configuration. According to this configuration, sufficient light is shielded even in a thin film state, and as a result, the distance from the transparent plate 2 provided on the front panel is increased, and stable operation is achieved without contact with the transparent plate even during adjustment. It is difficult to confirm the existence of this opaque film from the outside.

Effect of the Invention As described above, the entrance TV phone device of the present invention is provided with a space between the transparent plate and the transparent plate in order to block the visible light that causes an unpleasant feeling to the visitor who is the subject and to pass only the infrared light. By attaching an opaque sheet to the infrared filter provided, it is possible to block light with a simple configuration, and it is difficult for visitors to recognize the presence of the opaque sheet, and to be aware of the presence of the TV camera caused by the recognition. Reduce things.

Further, by attaching the opaque sheet to the infrared filter, the opaque sheet does not come close to the transparent plate, so that the opaque sheet moving together with the movable television camera does not come into contact with the transparent plate and damage the transparent plate.

Also, by attaching the opaque sheet to the infrared filter that moves with the TV camera, the opaque sheet will always be in the same position with respect to the lens of the moving TV camera. With this, the range in which the opaque sheet is attached to prevent the infrared rays of the infrared light emitting diode from entering the television camera can be reduced, and thus the irradiation range of the infrared light emitting diode can be widened.

[Brief description of drawings]

FIG. 1 is a side sectional view showing an essential part of an entrance TV phone device according to an embodiment of the present invention, FIG. 2 is a side sectional view showing an essential part of a conventional entrance TV phone device, and FIG. It is a partially cutaway perspective view. 1 ... Device housing, 2 ... Transparent plate, 5 ... Video camera,
6 ... Shading wall, 7 ... Infrared light emitting diode, 11 ... Infrared filter, 15 ... Opaque sheet.

Claims (1)

(57) [Scope of utility model registration request] 1. A transparent plate fixed to a front panel of an apparatus housing, a television camera fixed to a support, and the support with the camera in a state where the camera is positioned inside the front panel. Means for movably supporting the housing so that the relative position with respect to the front panel changes, and the support base so as to be positioned on the side surface of the camera through a light shielding wall formed on the side surface of the camera. The infrared light emitting diode fixed on the upper surface of the infrared light emitting diode is located between the infrared light emitting diode and the panel, and has a through hole that guides a light image from a subject illuminated through the panel to the camera. It is composed of an infrared filter fixed to the tip of the light shielding wall so as to be positioned with respect to the panel, and the peripheral surface of the through hole of the infrared filter has Entrance TV phone device, wherein a light shielding film formed so as not to close to the transparent plate by a light sheet.