JPS6238685A - Door phone with monitor camera - Google Patents

Abstract

PURPOSE:To select optionally the picture angle of a lens to allow the user to confirm a visitor easily by using an infrared transmission filter attachably and detachably to and from a cover of a housing covering the front face of an image pickup camera and replacing a lens through the mounting/dismounting of the blind cover. CONSTITUTION:An infrared emitting diode 10 is arranged at both sides of the image pickup camera 2, the infrared ray is irradiated on the visitor through a blind cover 11 comprising the infrared transmission filter at the front face and the image is picked up without being noticed by the visitor even at night. The cover 11 is structured attachably and detachably and the standard type and the wide angle type lenses 12 are provided to the camera 2. The lenses 12 are replaced simply by fitting or screwing an the cover 11 is replaced easily by engaging ruggedness. Since the cover 11 shuts visual light, the lens is not visible externally.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field 1] The present invention relates to a door phone with a monitor camera that allows a visitor to make a call while monitoring the image of the visitor.

[Dorsal zlt surgery 1 Conventionally, an inbound doorbell with an integrated monitor camera has been proposed. FIG. 3 shows one example, in which an imaging camera 2 and a telephone unit 3 are housed in the same housing 1, and a visitor M can press a push button 4 provided at the bottom of the housing 1. , a call is made to a door intercom main unit 5 installed in the room, and the call is made by picking up the handset 6 at m1fi5, and the visitor can be confirmed on a monitor screen 7 made of a liquid crystal or the like. However, in such conventional examples, the angle of view of the lens of the imaging camera is uniquely determined, so unless the visitor stands in an appropriate place on the door front, the visitor's face will not be clearly visible on the monitor screen. There were drawbacks.

[Purpose of the Invention] The present invention has been made to address the above-mentioned problems, and is suitable for cases where the doorbell is located in a hallway of an apartment, in front of a gate, or where the doorbell is installed on the side wall of an entrance. As shown in the figure, it is easy for visitors to stand depending on the surrounding situation, the distance between the station and the doorbell differs, and it is difficult to determine the appropriate viewing angle unless you use it for a while at the construction site. The object of the present invention is to provide a door phone with a monitor camera that allows a user to arbitrarily select the angle of view of the lens.

[Disclosure of the Invention] The doorphone with a monitor camera according to the present invention houses an infrared +Q imaging camera and a telephone call unit in the same housing, and can be connected to the doorphone base unit on the indoor side by operating a push button provided on the front of the housing. In this configuration, a removable infrared transmission filter is used on the cover of the housing that covers the face of the imaging camera. In addition, the lens of the imaging camera can be replaced, and the user can easily change the lens by attaching and removing the blind cover, and the blind cover can block visible light with an infrared transmission filter. The feature of this camera is that the lens part of the camera is not visible from the outside.

[Embodiment 1] FIG. 1 shows an embodiment of the door intercom according to the present invention. In the figure, an imaging camera 2 using a solid-state image pickup device is housed in the upper part of a housing 1, a communication unit 3 is housed in the lower part, and a push button 4 for calling a parent 8!5 is located at the lower front of the housing 1. It is provided. When the handset 6 is raised from the base unit 5, the speaker 8 and the microphone 9 enable communication within the room. An appropriate number of infrared light emitting diodes 10 are arranged on both sides of the imaging camera 2, and when the push button 4 is pressed, an intermittent current synchronized with the image synchronization signal of the imaging power is applied to the light emitting diode 10 for a certain period of time. The infrared rays are irradiated onto the visitor through the blind cover 11 made of an infrared transmission filter on the front, and images can be taken without the visitor noticing even at night.

The blind cover 11 has a removable structure as shown in FIG. 2, and the lens 12 of the imaging camera 2 is available in two types: a standard type and a wide-angle type. The lens 12 is fitted or screwed in and can be easily replaced, and the blind cover 11 is also structured to be easily attached and detached by means of engaging projections or mounting screws.

[Effects of the Invention 1 As described above, the present invention is a doorbell equipped with a monitor camera that includes a communication unit and an imaging camera, in which the lens of the imaging camera can be freely replaced by the user. If the visitor tends to stand in a position away from the front of the doorbell or close to the doorbell due to the situation, a wide-angle lens can be used to capture a clear image of the visitor's face. The lens has the advantage of allowing users to easily change the lens by attaching and detaching the blind cover, so users can try it out for any period of time before deciding on the final angle of view. The advantage is that you can easily select the viewing angle of the camera that suits the surrounding situation, and the blind cover can use a filter that transmits only infrared rays and blocks visible light, so visitors can It has the advantage of not noticing the presence of turtles.

[Brief explanation of drawings]

Fig. 1 is a front view showing an embodiment of the present invention, Fig. pltJ2 is a perspective view showing the same usage state as above, and Fig. plS3 is a perspective view of a conventional example. 1 is a housing, 2 is an imaging camera, 3 is a communication unit, 4 is a push button, 5 is a doorbell base unit, 6 is a handset, 7 is a monitor screen, 8 is a speaker, 9 is a microphone, 10 is an infrared light emitting device Diode, 11 is a blindfold cover, and 12 is a lens. Agent Patent Attorney Ishi 1) Chief 7th 1st Cause 2nd

Claims (1)

[Claims] (1) An infrared imaging camera and a telephone call unit are housed in the same housing, and by operating a push button on the front of the housing, it is possible to communicate with the doorbell base unit on the indoor side, and to allow visitors to use the imaging camera. In a configuration that allows the image to be monitored on the doorbell main unit side, a removable infrared transmission filter is used on the cover of the housing that covers the front of the imaging camera, and the lens of the imaging camera is replaceable. A doorbell with a monitor camera.