JP2008199352A - Intercom - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To form a coating layer on an intercom slave unit that is installed at the doorway of a house, in other words outdoor, for improved antifouling characteristics and coating characteristics. <P>SOLUTION: The intercom includes an intercom slave unit 1 installed at the doorway of a house, and an intercom master unit 2 which is installed in the room of the house and responses to a call from the slave unit for establishing a call. The slave unit comprises an enclosure 3 formed from resin or metal. On the surface of the enclosure, a coating layer 4 is formed on which a coating liquid containing titanium dioxide is applied. The coating liquid is mixed with one or more kinds selected from among surfactant of weight ratio 0.01-1.00% and alcohol of weight ratio 1-30% as a coat forming agent. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an interphone device, and more particularly, to an interphone device in which a coating layer is formed on an entrance of a house, that is, an interphone handset installed outdoors to enhance antifouling property and paintability is improved.

  Conventionally, as this type of interphone device, an interphone slave unit installed at the entrance of a house, that is, outdoors and excellent in water droplet prevention and waterproof structure has been proposed (for example, see Patent Literature 1 to Patent Literature 2).

No. 3037349 registered utility model publication JP 2001-177616 A

  However, in these intercom devices, the exterior of the intercom slave unit is excellent in water droplet prevention and waterproof structure, but it is difficult to remove dirt, and the appearance of the exterior part deteriorates due to deterioration over time. The image quality was degraded due to dirt on the camera cover. As a countermeasure, the use of a photocatalyst resin on the outer surface of the intercom handset was studied, but the affinity between the titanium dioxide used as the photocatalyst resin and the exterior resin of the intercom handset was poor, and a promising effect was not obtained. .

  The present invention was made in order to solve the above-mentioned problems, and a coating layer is formed on the entrance of a house, that is, an intercom handset installed outdoors to enhance the antifouling property and improve the coating property. An object of the present invention is to provide an intercom device to be operated.

  In order to achieve the above-described object, an interphone apparatus according to the present invention includes an interphone slave installed at a front door of a house and an interphone for establishing a call in response to a call from the interphone slave installed in a house interior. The intercom handset has an exterior part made of resin or metal, and a coating layer coated with a coating liquid containing titanium dioxide is formed on the surface of the exterior part. Is a mixture of at least one selected from a surfactant having a weight ratio of 0.01 to 1.00% and an alcohol having a weight ratio of 1 to 30% as a coating film forming agent.

  In the intercom apparatus of the present invention, the coating layer is formed of two layers, a lower layer and an upper layer, and a coating film forming agent is added to the lower layer.

  In the intercom apparatus of the present invention, the surfactant has low foaming properties and improved hydrophilicity.

  According to the intercom apparatus of the present invention, a coating layer in which a coating liquid containing titanium dioxide is applied is formed on the surface of the exterior portion made of resin or metal of the intercom slave, and the coating liquid is used to form a coating film. By mixing at least one selected from surfactants having a weight ratio of 0.01 to 1.00% and alcohol having a weight ratio of 1 to 30% as an agent, the coating layer can be easily placed on the resin. .

  Moreover, according to the intercom apparatus of the present invention, the coating layer is formed in two layers, and the coating layer is added to the lower layer, whereby the coating layer can be easily applied to the exterior portion.

  Moreover, according to the intercom apparatus of the present invention, workability can be improved by using a surfactant having low foaming properties and improved hydrophilicity.

  Hereinafter, preferred embodiments of an intercom apparatus according to the present invention will be described with reference to the drawings.

  As shown in FIG. 1, an interphone device includes an interphone slave unit 1 installed at the entrance of a house and an interphone master unit for establishing a call in response to a call from the interphone slave unit 1 installed in a house interior. 2 are provided. The intercom slave unit 1 and the interphone master unit 2 are connected via a transmission line L.

  The intercom handset 1 is provided with a camera 11 that images a visitor, a handset microphone 12 that makes a call, a handset speaker 13, and a call button 14 that makes a call.

  The intercom base unit 2 is provided with a monitor 21 for displaying a visitor image captured by the camera 11, a base unit microphone 22 for performing a call, a base unit speaker 23, and a call switch 24 for starting a call.

  According to such an intercom apparatus, when a visitor standing in front of the intercom slave 1 at the entrance presses the call button 1, the ringing sound is generated from the speaker 23 by the intercom master 2 and is captured by the camera 11. A video of the visitor is displayed on the monitor 21.

  If the video of the displayed customer is visually recognized and the call switch 24 is operated on the interphone master unit 2 in response to the call, the handset microphone 12 of the interphone handset 1, the handset speaker 13 and the interphone base unit 2 A call can be made with the parent microphone 22 and the parent speaker 23.

  Next, with reference to FIG. 2 and FIG. 3, the external appearance and the housing configuration of the intercom slave device 1 will be described. The housing of the interphone slave device 1 includes an upper case 15 and a lower case 16. Further, a mounting base 17 is provided for mounting the intercom handset 1 on the wall of a house entrance.

  The upper case 15 is provided with a camera cover 10, in which a camera 11 is mounted on a substrate together with a microphone 12, a speaker 13, parts of a call button 14, an electronic circuit, and the like. It is stored.

  The intercom handset 1 has an exterior part 3 made of resin or metal, that is, an upper case 15 and a camera cover 10.

  A coating layer 4 to which a coating liquid containing titanium dioxide is applied is formed on the surface of the exterior portion 3.

  In the coating liquid, one or more kinds selected from a surfactant having a weight ratio of 0.01 to 1.00% and an alcohol having a weight ratio of 1 to 30% are mixed as a film forming agent. That is, the coating liquid contains a surfactant having a weight ratio of 0.01 to 1.00%, an alcohol having a weight ratio of 1 to 30%, or a mixture of both as a film forming agent.

  Thereby, the coating layer can be easily placed on the resin due to its wettability. In this case, workability can be improved by mixing alcohol as an additive.

  As a film forming agent to be mixed with the coating liquid, an experiment was conducted with respect to a surfactant and an alcohol, and the results are shown in Tables 1 and 2 below.

  As a preferred embodiment of the present invention, the coating layer 4 is formed of two layers of a lower layer 4a and an upper layer 4b, and a coating film forming agent is added to the lower layer. For example, the lower layer 4a and the upper layer 4b are each configured with a thickness of 0.4 μm.

  The lower layer 4a is composed of a coating liquid containing titanium dioxide and a surfactant or alcohol or a mixture of both, and has an affinity for the exterior portion 3, that is, the resin or metal of the upper case 15, the camera cover 10, The lower layer 4 a is easily fixed to the exterior portion 3, that is, the upper case 15 and the camera cover 10.

  The upper layer 4b is made of a coating liquid containing titanium dioxide and has a strong antifouling property and hydrophilicity due to a photocatalyst. The lower layer 4a and the upper layer 4b of the coating layer 4 were sequentially applied to the exterior portion 3, that is, the upper case 15 and the camera cover 10, and then dried.

  As another example, in order to construct a coating layer on the exterior portion 3, that is, the upper case 15 and the camera cover 10, as a lower layer 4a, a solution obtained by mixing a surfactant of 0.1% by weight with a peroxotitanium aqueous solution is used. It was used and applied to a thickness of about 0.2 μm. As the upper layer 4b, a liquid in which peroxotitanium, titanium dioxide and silica were mixed was applied to a thickness of about 0.2 μm and dried.

  The surfactant has low foaming properties and improved hydrophilicity. This facilitates the formation of a coating film and increases workability and productivity. The low foaming property of the surfactant can also be obtained by adding alcohol.

  In the above embodiments, the present invention shows the interphone slave unit with a camera. However, the coating layer is applied to the entire exterior portion even in the case of an interphone slave unit without a camera, that is, without a camera cover and a camera. Produces the same effect.

  In the above embodiment, the present invention has one interphone master unit and one interphone slave unit, but the present invention can be similarly applied to a plurality of master units and a plurality of slave units.

It is a block diagram which shows the intercom apparatus by the Example of this invention. (A) is a general | schematic block diagram which shows the intercom apparatus by the Example of this invention, (b) is a structure explanatory drawing of the exterior part of an intercom cordless handset. It is a longitudinal cross-sectional view which follows the microphone of the intercom handset by the Example of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Interphone subunit | mobile_unit 3 ... Exterior part 4 ... Coating layer 4a ... Lower layer 4b ... Upper layer 2 ... Interphone main unit

Claims (3)

An intercom handset (1) installed at the entrance of a house, and an interphone base unit (2) installed in a room of the house for establishing a call in response to a call from the intercom handset,
The intercom slave has an exterior part (3) made of resin or metal, and a coating layer (4) coated with a coating liquid containing titanium dioxide is formed on the surface of the exterior part,
The intercom apparatus, wherein the coating liquid is mixed with at least one selected from a surfactant having a weight ratio of 0.01 to 1.00% and an alcohol having a weight ratio of 1 to 30% as a coating film forming agent. .   The interphone apparatus according to claim 1, wherein the coating layer is formed of two layers of a lower layer (4a) and an upper layer (4b), and the coating film forming agent is added to the lower layer.   The intercom apparatus according to claim 1, wherein the surfactant has low foaming properties and improved hydrophilicity.

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