JP2005299142A - Automatic faucet device - Google Patents
Automatic faucet device Download PDFInfo
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- JP2005299142A JP2005299142A JP2004114278A JP2004114278A JP2005299142A JP 2005299142 A JP2005299142 A JP 2005299142A JP 2004114278 A JP2004114278 A JP 2004114278A JP 2004114278 A JP2004114278 A JP 2004114278A JP 2005299142 A JP2005299142 A JP 2005299142A
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- 238000001514 detection method Methods 0.000 claims abstract description 25
- 230000010287 polarization Effects 0.000 claims description 28
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 23
- 238000003780 insertion Methods 0.000 claims description 14
- 230000037431 insertion Effects 0.000 claims description 14
- 239000011347 resin Substances 0.000 claims description 13
- 229920005989 resin Polymers 0.000 claims description 13
- 238000003466 welding Methods 0.000 claims description 8
- 229910001220 stainless steel Inorganic materials 0.000 abstract description 3
- 239000010935 stainless steel Substances 0.000 abstract description 3
- 238000004078 waterproofing Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 12
- 230000007257 malfunction Effects 0.000 description 3
- 238000007599 discharging Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 206010044565 Tremor Diseases 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
Abstract
Description
本発明は、手洗い・洗面等の目的で使用され、物体を検出して自動的に吐水する自動吐水装置に関するものである。 The present invention relates to an automatic water discharge device that is used for the purpose of hand-washing, washing, etc., and automatically discharges water by detecting an object.
公共施設等において、手をセンサに差し出すだけで自動的に吐水する自動吐水装置はその節水性・非接触による衛生性により幅広く普及している。これら自動吐水装置に用いられるセンサの多くは赤外線を洗面器面に投光しその反射光の変化により物体を検知するものである。しかしながら、この種類のセンサはステンレスや一部の陶器に見られる様な鏡面反射するものについては誤作動を引き起こす恐れがあり、赤外線を使用する自動吐水装置の大きな弱点の一つとなっていた。 In public facilities and the like, an automatic water discharge device that automatically discharges water just by inserting a hand to a sensor is widely used due to its water-saving and non-contact hygiene. Many of the sensors used in these automatic water dischargers project infrared rays onto the surface of the basin and detect objects by changing the reflected light. However, this type of sensor has the potential to cause malfunctions of mirror-reflecting materials such as those found on stainless steel and some ceramics, and has been one of the major weaknesses of automatic water dischargers that use infrared rays.
このような状況を解決する手段として、偏光手段をセンサの投光・受光手段部前面に組み込んで誤作動を引き起こす鏡面反射成分を選択的に除去し、どのような洗面器に対しても誤動作することなく、良好な使い勝手を提供することができる自動吐水装置が考案されている。（例えば特許文献１参照のこと）これは、入射波と鏡面反射する物体に対するその反射波が同じ成分となることを利用したものである。 As a means to solve such a situation, a polarizing means is incorporated in the front surface of the light projecting / receiving means portion of the sensor to selectively remove a specular reflection component that causes a malfunction, and malfunctions to any basin. Therefore, an automatic water discharge device that can provide good usability has been devised. (For example, refer to Patent Document 1) This utilizes the fact that the incident wave and the reflected wave with respect to the specularly reflected object have the same component.
簡単に偏光手段を用いたセンサの仕組みを説明する。投光手段より出された赤外線を第一偏光手段により一方向のみに振動する波形成分へと合成する。鏡面反射した波形は入射波形と同じとなるため、第二偏光手段を第一偏光手段に対し概直角に配置しておけば、反射波は第二偏光手段により除去され受光手段に到達しないことになる。つまり、鏡面反射成分を取り除くことができるのである。
しかし、自動吐水装置において、投光手段に対応する第一偏光手段と、受光手段に対応する第二偏光手段を配置する際、偏光方向を確実に異なる方向に配置しないと、本来の目的である鏡面反射成分を取り除くことができない。
The mechanism of the sensor using the polarization means will be briefly described. The infrared rays emitted from the light projecting means are combined into a waveform component that vibrates only in one direction by the first polarizing means. Since the specularly reflected waveform is the same as the incident waveform, if the second polarizing means is arranged substantially perpendicular to the first polarizing means, the reflected wave is removed by the second polarizing means and does not reach the light receiving means. Become. That is, the specular reflection component can be removed.
However, in the automatic water discharging apparatus, when the first polarizing means corresponding to the light projecting means and the second polarizing means corresponding to the light receiving means are arranged, it is the original purpose unless the polarization directions are surely arranged in different directions. The specular reflection component cannot be removed.
本発明は上記従来例の問題点を鑑みて発明したものであり、ステンレス製の洗面器などにも設置できる偏光手段を備えた検出手段を有する自動吐水装置において、偏光手段の誤配置防止を提供することを目的とする。 The present invention was invented in view of the above-described problems of the conventional example, and provides an automatic water discharge apparatus having a detecting means having a polarizing means that can be installed in a stainless steel basin or the like, and prevents misplacement of the polarizing means. The purpose is to do.
上記課題を解決する為になされた請求項第１項記載の発明は、検出手段の信号に基づき開閉弁部が開閉して吐出口より吐水する自動吐水装置において、前記検出手段は検出体に向けて赤外光を投光する投光手段と、前記検出体により反射された赤外光を受光する受光手段と、前記投光手段と前記受光手段を格納するホルダを備え、前記ホルダは、前記投光手段の前面で偏光手段を保持する第一偏光手段保持部と、前記受光手段の前面で前記第一偏光手段保持部とは偏光方向が異なるように偏光手段を保持する第二偏光手段保持部と、を有することを特徴とするとするものである。 The invention according to claim 1, which has been made to solve the above-mentioned problems, is an automatic water discharge device in which an on-off valve portion opens and closes and discharges water from a discharge port based on a signal from a detection means. A light projecting means for projecting infrared light, a light receiving means for receiving the infrared light reflected by the detector, and a holder for storing the light projecting means and the light receiving means. A first polarizing means holding section that holds the polarizing means on the front surface of the light projecting means, and a second polarizing means holding section that holds the polarizing means on the front surface of the light receiving means so that the polarization direction is different from that of the first polarizing means holding section. And a portion.
本発明においては、ホルダ側に全ての実装部品を配置するため組立の効率性が良い。また、鏡面反射を選択的に除去する為には、第一偏光手段と第二偏光手段は偏光方向が異なるように配置しておく必要がある。ホルダの第一偏光手段保持部と第二偏光手段保持部とを偏光方向が異なるように配置されていれば、１種類の偏光手段をその方向性のみ替えて配置すれば事足りることになる。その為、部品点数削減及び誤組み立て防止といった効果が期待できる。ここでいう偏光手段とは、偏光板や、偏光フィルタ、など偏光性能を有するものであれば何でも良い。 In the present invention, since all the mounted parts are arranged on the holder side, the assembly efficiency is good. Further, in order to selectively remove the specular reflection, it is necessary to arrange the first polarizing means and the second polarizing means so that the polarization directions are different. If the first polarizing means holding portion and the second polarizing means holding portion of the holder are arranged so that the polarization directions are different, it is sufficient to arrange one kind of polarizing means by changing only the directionality. Therefore, the effects of reducing the number of parts and preventing misassembly can be expected. The polarization means here may be anything as long as it has polarization performance, such as a polarizing plate or a polarizing filter.
上記問題を解決する為になされた請求項第２項記載の発明は、前記偏光手段保持部が、偏光手段をスライド式にて挿入可能なポケット状の偏光手段挿入部であることを特徴とするものである。 The invention according to claim 2, which has been made to solve the above problem, is characterized in that the polarizing means holding section is a pocket-shaped polarizing means insertion section in which the polarizing means can be inserted in a sliding manner. Is.
本発明においては、偏光手段保持部は、ポケット形状の偏光手段挿入部であり、偏光手段をホルダに対してスライド式に挿入する。ポケット形状においては、１面のみが完全に開放状態になっており残りの５面は何らかの形で偏光手段を拘束することとなる。その為、偏光手段の設置が容易なだけではく、偏光手段挿入後のがたつきも少なく非常に品質の安定した検出手段を持つ自動吐水装置を提供することができる。 In the present invention, the polarization means holding portion is a pocket-shaped polarization means insertion portion, and the polarization means is slidably inserted into the holder. In the pocket shape, only one surface is completely open, and the remaining five surfaces restrain the polarizing means in some form. For this reason, it is possible to provide an automatic water discharge device having not only easy installation of the polarization means but also little detection of shakiness after insertion of the polarization means and a very stable quality detection means.
上記問題を解決する為になされた請求項第３項記載の発明は、前記第一偏光手段保持部と、前記第二偏光手段保持部の方向は、垂直に異なることを特徴とするものである。 The invention according to claim 3, which has been made to solve the above problem, is characterized in that the directions of the first polarizing means holding portion and the second polarizing means holding portion are different vertically. .
本発明においては第一偏光手段保持部と第二偏光手段保持部の方向が垂直に異なっている。
第一偏光手段と第二偏光手段とが偏光方向が異なるように配置しておけば、鏡面反射成分をある程度除去することができるが、直角に近ければ近いほどその除去率は高くなる。その為、直角に配置するのが最も望ましいのである。
In the present invention, the directions of the first polarizing means holding part and the second polarizing means holding part are different vertically.
If the first polarizing means and the second polarizing means are arranged so that the polarization directions are different, the specular reflection component can be removed to some extent, but the closer to the right angle, the higher the removal rate. Therefore, it is most desirable to arrange them at right angles.
上記問題を解決する為になされた請求項第４項記載の発明は、前記ホルダは、赤外線が透過する前面窓部とホルダを格納する側面部を透過性の樹脂にて一体成型されたケースに収められたことを特徴とするものである。 In order to solve the above-mentioned problem, the invention according to claim 4 is characterized in that the holder is a case in which a front window portion through which infrared rays are transmitted and a side surface portion for storing the holder are integrally molded with a transparent resin. It is characterized by being contained.
本発明においては、偏光手段をホルダ側に装着した状態にて前面窓部と側面部が一体となった透過性の樹脂ケース部に挿入する。その為、防水性を確保すべき部分は背面部のみとなり防水性を考える上で非常に有利となる。また、部品点数及び製造工程を減らすことができるのでコスト的にも優れた自動吐水装置を提供することができる。 In the present invention, the polarizing means is inserted into the transparent resin case part in which the front window part and the side part are integrated with the holder attached. For this reason, the only part that should ensure waterproofness is the back part, which is very advantageous in considering waterproofness. Moreover, since the number of parts and a manufacturing process can be reduced, the automatic water discharging apparatus excellent also in cost can be provided.
上記問題を解決する為になされた請求項第５項記載の発明は、前記ケースの背面から樹脂製のバックプレートを溶着にて結合し、前記検出手段全体を水密構造としたことを特徴とする。 The invention according to claim 5, which has been made to solve the above problem, is characterized in that a resin back plate is joined by welding from the back surface of the case, and the whole detection means has a watertight structure. .
本発明において、樹脂にて一体で成型したケースの背面より樹脂製のバックプレートを溶着することにより非常に強固に防水性を確保することができる。 In the present invention, the waterproof property can be secured very firmly by welding a resin back plate from the back of the case integrally molded with resin.
本発明によれば、投光手段の前面と、受光手段の前面に配置する偏光手段の誤配置を防止することができる。 According to the present invention, it is possible to prevent misplacement of the polarizing unit disposed on the front surface of the light projecting unit and the front surface of the light receiving unit.
以下、本発明の実施の形態を、図面により詳細に説明する。 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
図１は自動吐水装置の検出手段において、赤外線を透過する前面窓部とホルダを保持する側面部を透過性の樹脂にて一体成型した例を示す概略構成図である。ホルダ１に、投光手段２及び受光手段３を収納する部分が設けられており、偏光手段４が投光手段２及び受光手段３前面部に保持され、その状態にてケース部８に保持されており、偏光手段４とケース部８は密着している。ケース部８は、前面窓部１７と側面部１８を透過性の樹脂にて一体成型したものである。次に、センシングの仕組みを説明する。投光手段２より出された赤外線は偏光手段４を通過し、透過性のケース部８を通過し検出物に反射後、ケース部８、偏光手段４、受光手段３の順に戻ってきて物体を検知することができる。この構造においては、水浸入の影響を考慮しなければならないのは、基板部６の裏側のみとなっており、前面窓部１７と側面部１８を溶着していたものと比較して、高い防水性能・部品点数減によるコストメリットを確保することが可能である。 FIG. 1 is a schematic configuration diagram illustrating an example in which a front window portion that transmits infrared rays and a side surface portion that holds a holder are integrally formed of a permeable resin in a detection unit of an automatic water discharge device. The holder 1 is provided with a portion for accommodating the light projecting means 2 and the light receiving means 3, and the polarizing means 4 is held on the front surface of the light projecting means 2 and the light receiving means 3, and is held in the case portion 8 in that state. The polarizing means 4 and the case portion 8 are in close contact with each other. The case portion 8 is obtained by integrally molding the front window portion 17 and the side surface portion 18 with a permeable resin. Next, the sensing mechanism will be described. Infrared light emitted from the light projecting means 2 passes through the polarizing means 4, passes through the transparent case portion 8 and is reflected by the detected object, and then returns to the object in the order of the case portion 8, polarizing means 4, and light receiving means 3. Can be detected. In this structure, the influence of water intrusion must be taken into consideration only on the back side of the substrate part 6 and is highly waterproof compared to the case where the front window part 17 and the side part 18 are welded. It is possible to secure cost merit by reducing the number of performance and parts.
図２（ａ）はホルダに偏光手段をスライド式にて挿入できるポケット状の格納手段を設けた概略構成図であり、図２（ｂ）は図２（ａ）のＡ−Ａ断面図である。ホルダ１は、偏光手段４を上方向から挿入するポケット状の偏光手段挿入部１４を備えている。ホルダ１に投光手段２及び受光手段３を背面から挿入後、偏光手段４をポケット状の偏光手段挿入部１４に上方向から挿入する。偏光手段４の厚みと偏光手段挿入部１４の厚み方向の寸法はほぼ同程度に形成されており、挿入後のがたつきはない構造となっている。偏光手段４をホルダ１に挿入後、透過性の樹脂にて成型されたケース８にホルダ１を挿入する。組み立て自体、非常に簡単であり、また一旦、偏光手段４を挿入してしまえば、ホルダ１を逆さにしない限り脱落することはない。また、仮に偏光手段４がホルダ１に対して不完全に挿入されたとしても、ケース８に対してホルダ１の挿入が困難になるため、誤組み立ても防止することができ、非常に安定した品質を保つことができる。さらに、投光手段２の前面で偏光手段を挿入する第一偏光手段挿入部１４ａと、受光手段３の前面で第二偏光手段挿入部１４ｂとは偏光方向が異なる。その為、第一偏光手段挿入部１４ａと第二偏光手段挿入部１４ｂには同一部品である偏光手段４をその挿入方向を変えるだけで対応できるのである。 FIG. 2 (a) is a schematic configuration diagram in which a pocket-shaped storage means capable of inserting the polarization means into the holder in a sliding manner is provided, and FIG. 2 (b) is a cross-sectional view taken along the line AA in FIG. 2 (a). . The holder 1 includes a pocket-shaped polarization means insertion portion 14 for inserting the polarization means 4 from above. After the light projecting means 2 and the light receiving means 3 are inserted into the holder 1 from the back, the polarizing means 4 is inserted into the pocket-shaped polarizing means insertion portion 14 from above. The thickness of the polarizing means 4 and the dimension in the thickness direction of the polarizing means insertion portion 14 are formed to be approximately the same, so that there is no rattling after insertion. After the polarizing means 4 is inserted into the holder 1, the holder 1 is inserted into a case 8 molded from a transparent resin. The assembly itself is very simple, and once the polarizing means 4 is inserted, it will not fall off unless the holder 1 is turned upside down. Even if the polarizing means 4 is incompletely inserted into the holder 1, it becomes difficult to insert the holder 1 into the case 8, so that it is possible to prevent erroneous assembly, and extremely stable quality. Can keep. Further, the polarization direction of the first polarization means insertion portion 14a for inserting the polarization means in front of the light projecting means 2 is different from that of the second polarization means insertion portion 14b in the front of the light receiving means 3. Therefore, the first polarization means insertion portion 14a and the second polarization means insertion portion 14b can be handled by changing the insertion direction of the polarization means 4 which is the same component.
図３は背面部を溶着にて水密構造とした概略構成図である。ホルダ１をケース８に挿入後ケース８背面側をバックプレート部１０にて封止し溶着部９にて溶着する。その為、樹脂の流し込みなどによる防水手段に比較して防水性能が安定する。さらに、樹脂の流しこみの場合、硬化時間を考慮する必要があるが、溶着はその工程が数秒レベルのため、製造時間を大幅に短縮することができる。 FIG. 3 is a schematic configuration diagram in which the back surface portion is formed into a watertight structure by welding. After the holder 1 is inserted into the case 8, the back side of the case 8 is sealed with the back plate portion 10 and welded with the welding portion 9. For this reason, the waterproof performance is stabilized as compared with waterproof means by pouring resin. Furthermore, in the case of resin pouring, it is necessary to consider the curing time, but since the process of welding is at a level of several seconds, the manufacturing time can be greatly shortened.
図４は検知手段がスパウト先端部に配置された概略構成図である。近年、自動吐水装置の使い勝手を向上させるために検知手段１３をスパウト１２の先端、吐出口１１の上部に配置するケースが増加している。その為、検知手段１３の形状は複雑な形状となってきている。本発明の検知手段１３及び吐出口１１はユニットとして多種多様な形状のスパウトに対応できる。 FIG. 4 is a schematic configuration diagram in which the detection means is arranged at the tip of the spout. In recent years, in order to improve the usability of the automatic water discharge device, cases in which the detection means 13 is arranged at the tip of the spout 12 and the upper part of the discharge port 11 are increasing. Therefore, the shape of the detection means 13 has become a complicated shape. The detection means 13 and the discharge port 11 of the present invention can correspond to various types of spouts as a unit.
図５はスパウト先端部に配置された検知手段の概略構成図である。構造部材としてはケース部８、ホルダ１、バックプレート部１０より構成されている。ケース部８は図４で説明した様に複雑な形状を呈しており、検知手段１３の上縁側１５はスパウト１２の内縁に沿った形状を取っており検知手段１３の下縁側１６は吐出口１１の外縁に沿った形状となっている。ホルダ１は偏光手段４を備えており、その後ろ側に投光手段２及び受光手段３が配置される。最後に背面よりバックプレート部１０にて溶着固定されることとなる。尚、図２と同様に、投光手段２に対応する偏光手段４と、受光手段３に対応する偏光手段４は、偏光方向が異なるようになっている。 FIG. 5 is a schematic configuration diagram of the detection means arranged at the tip of the spout. The structural member includes a case portion 8, a holder 1, and a back plate portion 10. The case portion 8 has a complicated shape as described with reference to FIG. 4, the upper edge side 15 of the detection means 13 has a shape along the inner edge of the spout 12, and the lower edge side 16 of the detection means 13 is the discharge port 11. It has a shape along the outer edge. The holder 1 is provided with a polarizing means 4, and a light projecting means 2 and a light receiving means 3 are arranged behind the polarizing means 4. Finally, the back plate 10 is welded and fixed from the back. As in FIG. 2, the polarizing means 4 corresponding to the light projecting means 2 and the polarizing means 4 corresponding to the light receiving means 3 have different polarization directions.
図６は検知手段を前面より透視した概略構成図である。投光手段２に対応する偏光手段４と、受光手段３に対応する偏光手段４を直角に配置されている。この様な配置をすることにより、鏡面反射成分を最も確実に排除することができかつ、非常にコンパクトサイズの検知手段を実現することが可能である。 FIG. 6 is a schematic configuration diagram of the detection means seen through from the front. The polarizing means 4 corresponding to the light projecting means 2 and the polarizing means 4 corresponding to the light receiving means 3 are arranged at right angles. With such an arrangement, it is possible to most reliably eliminate the specular reflection component and realize a very compact size detection means.
１…ホルダ
２…投光手段
３…受光手段
４…偏光手段
５…窓部
６…基板部
７…センサコード
８…ケース部
９…溶着部
１０…バックプレート部
１１…吐出口
１２…スパウト
１３…検知手段
１４…偏光手段挿入部
１５…上縁側
１６…下縁側
１７…前面窓部
１８…側面部
DESCRIPTION OF SYMBOLS 1 ... Holder 2 ... Light projection means 3 ... Light reception means 4 ... Polarization means 5 ... Window part 6 ... Substrate part 7 ... Sensor code 8 ... Case part 9 ... Welding part 10 ... Backplate part 11 ... Discharge port 12 ... Spout 13 ... Detection means 14 ... polarization means insertion part 15 ... upper edge side 16 ... lower edge side 17 ... front window part 18 ... side part
Claims (5)
前記ホルダは、前記投光手段の前面で偏光手段を保持する第一偏光手段保持部と、前記受光手段の前面で前記第一偏光手段保持部とは偏光方向が異なるように偏光手段を保持する第二偏光手段保持部と、を有することを特徴とする自動吐水装置。 In the automatic water discharge device that opens and closes the opening / closing valve portion based on the signal of the detection means and discharges water from the discharge port, the detection means is reflected by the light projecting means for projecting infrared light toward the detection body and the detection body. A light receiving means for receiving the infrared light, a holder for storing the light projecting means and the light receiving means,
The holder holds the polarizing means so that the polarization direction is different from the first polarizing means holding portion holding the polarizing means on the front surface of the light projecting means and the first polarizing means holding portion on the front surface of the light receiving means. An automatic water discharge device comprising: a second polarizing means holding unit.
5. The automatic water discharge device according to claim 4, wherein a back plate made of resin is joined by welding from the back surface of the case, and the whole detection means has a watertight structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004114278A JP4457734B2 (en) | 2004-04-08 | 2004-04-08 | Automatic water discharge device |
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| Application Number | Priority Date | Filing Date | Title |
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| JP2004114278A JP4457734B2 (en) | 2004-04-08 | 2004-04-08 | Automatic water discharge device |
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| Publication Number | Publication Date |
|---|---|
| JP2005299142A true JP2005299142A (en) | 2005-10-27 |
| JP4457734B2 JP4457734B2 (en) | 2010-04-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2004114278A Expired - Fee Related JP4457734B2 (en) | 2004-04-08 | 2004-04-08 | Automatic water discharge device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009281008A (en) * | 2008-05-20 | 2009-12-03 | Inax Corp | Automatic water faucet |
| WO2014103114A1 (en) * | 2012-12-28 | 2014-07-03 | 株式会社Ｌｉｘｉｌ | Motion detection sensor and automatic faucet |
| JP2017203348A (en) * | 2016-05-13 | 2017-11-16 | Toto株式会社 | Water discharge device and photoelectric sensor |
-
2004
- 2004-04-08 JP JP2004114278A patent/JP4457734B2/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009281008A (en) * | 2008-05-20 | 2009-12-03 | Inax Corp | Automatic water faucet |
| WO2014103114A1 (en) * | 2012-12-28 | 2014-07-03 | 株式会社Ｌｉｘｉｌ | Motion detection sensor and automatic faucet |
| JP2014130103A (en) * | 2012-12-28 | 2014-07-10 | Lixil Corp | Human body detection sensor and automatic faucet |
| CN104871034A (en) * | 2012-12-28 | 2015-08-26 | 骊住株式会社 | Motion detection sensor and automatic faucet |
| US9758952B2 (en) | 2012-12-28 | 2017-09-12 | Lixil Corporation | Human body detection sensor and automatic faucet |
| JP2017203348A (en) * | 2016-05-13 | 2017-11-16 | Toto株式会社 | Water discharge device and photoelectric sensor |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4457734B2 (en) | 2010-04-28 |
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