JP5791576B2 - Hand dryer - Google Patents

Description

  The present invention relates to a hand drying device that blows air on a wet hand after washing to dry it hygienically.

  In the drying of wet hands after washing, lighting is performed in a hand dryer that blows the air flow onto the wet hands and blows off the water attached to the hands with the air flow without wiping with a towel or handkerchief. Hand dryers have been developed that use this light to point the user to the location of the airflow. For example, Japanese Utility Model Laid-Open No. 5-55988 discloses that when a hand is detected by the sensing means, the air blown from the fan is heated by the heater to discharge the warm air from the hot air outlet, and the hot air from the hot air outlet is A hand-drying device is disclosed that emits visible light indicating the flow direction. Japanese Patent Laid-Open No. 2007-82904 discloses a water receiver formed in a concave shape, a jet generating section that jets jet air from one surface forming the water receiver, and a hand between the jet generating section and the water receiver. Is provided with a processing space for drying the hand, an irradiation means for irradiating light, and a fan motor for sending out the air ejected from the jet generating section. A hand-drying device is disclosed in which the optical path and the air path of the air ejected from the jet generating section are matched.

Japanese Utility Model Publication No. 5-55988 (summary, FIG. 3) JP 2007-82904 A (Claim 2, FIG. 1)

  However, in the conventional hand drying devices disclosed in Japanese Utility Model Laid-Open No. 5-55988 and Japanese Patent Application Laid-Open No. 2007-82904, both only irradiate the irradiation light to the air flow. We placed the hand on the optical axis of the irradiation light in the processing space to dry the sample and applied the irradiation light to the hand to find out the position and range of the irradiation light. Since it is not reflected, it cannot be confirmed as it is, and it is impossible to accurately grasp the position and range of the irradiation light unless the hand is placed in the processing space and the irradiation light is reflected by hand. Therefore, in order to properly position the hand with respect to the irradiation light, the user must first place the hand in the processing space without knowing the appropriate position to place the hand, and after confirming the position of the irradiation light hitting the hand Therefore, there has been a problem that the position of the hand must be corrected so that the irradiation light strikes the hand properly, and if the position of the hand is not corrected, the airflow does not hit the hand properly and the usability is poor.

  The present invention has been made to solve the above-described problems, and provides an easy-to-use hand drying device that allows the user to check the position of the air flow without placing a hand in the processing space for drying the hand. The purpose is that.

  A hand drying device according to the present invention is provided on at least one wall surface of a hand insertion portion formed by a casing forming an outer shell and opening toward the front surface or the upper surface and a wall surface forming the hand insertion portion. A nozzle that blows a flow, a hand detection sensor that is provided on the wall surface to detect the presence or absence of a hand in the hand insertion portion, an illumination device that is provided on the wall surface to irradiate the hand insertion portion with irradiation light, and is housed in a casing and receives air flow from the nozzle And a control circuit for controlling the operation of the air flow generator according to the detection signal of the hand detection sensor, and the lighting device on the other wall surface that forms the hand insertion portion and faces the wall surface The width of the irradiation light image in the side surface direction is equal to the width in the side surface direction of the nozzle, or the width of the irradiation light image in the side surface direction is shorter than the width in the side surface direction of the nozzle, And irradiation light Wherein the side surface direction of the central and lateral center of the nozzle of the image is the same position.

  The hand drying apparatus according to the present invention can confirm the position of the air flow without the user placing his / her hand in the processing space for drying the hand, and can improve usability.

It is a perspective view which shows the external appearance of the hand dryer which concerns on Embodiment 1 of this invention. It is side surface sectional drawing of the hand dryer which concerns on Embodiment 1 of this invention. It is explanatory drawing which shows the nozzle 12 vicinity seen from the arrow X in FIG. 1 with the hand dryer which concerns on Embodiment 1 of this invention. It is a front view explaining the irradiation light of the hand dryer which concerns on Embodiment 1 of this invention. FIG. 5 is a partial explanatory view showing the vicinity of the water receiver 4 as viewed from the direction of arrow Y in FIG. 4 in the hand drying device according to the first embodiment of the present invention. It is side surface sectional drawing of the hand dryer which concerns on Embodiment 2 of this invention.

Embodiment 1 FIG.
FIG. 1 is a perspective view showing an appearance of a hand dryer according to Embodiment 1 of the present invention. FIG. 2 is a right side cross-sectional view of the hand dryer according to Embodiment 1 of the present invention. As shown in FIG. 1 and FIG. 2, the casing 1 that forms the outer shell of the hand dryer has a hand insertion port 2 on the front surface, and a hand insertion part 3 as a processing space following the hand insertion port 2. The hand can be inserted and removed. The manual insertion portion 3 is formed in the lower front portion of the casing 1 as an open sink-like concave portion whose front and both side surfaces are open, and the water receiving portion 4 that forms the lower portion and the back side are curved at the edge thereof A barrier structure 5 is provided to prevent water from splashing sideways or forward. The bottom of the water receiving portion 4 is inclined downward toward the front, and a drain port 6 is provided at the lower end of the inclination. A drain container 7 for storing water dripping from the drain port 6 is provided below the water receiving portion 4 so as to be freely inserted and removed. In addition, the inner surface of the hand insertion portion 3 is impregnated with a water-repellent coating such as silicon or fluorine, a hydrophilic coating such as titanium oxide, or an antibacterial agent to reduce the adhesion of dirt to the inner wall surface. Or to reduce the growth of bacteria. A nozzle 12 that blows high-speed air downward toward the hand insertion portion 3 is provided on the upper inner wall surface that forms the hand insertion portion 3. The water receiving portion 4 is a lower inner wall surface that forms the hand insertion portion 3, and is opposed to the upper inner wall surface on which the nozzle 12 is provided with the hand insertion portion 3 interposed therebetween.

  In the box-shaped space formed by the casing 1 and the base 8 that forms the outer shell of the hand-drying device on the back side above the manual insertion portion 3, high-pressure air composed of a commutator motor and a turbo fan is provided. A flow generator 9, an intake passage 11 that communicates an intake side of the high-pressure airflow generator 9 and an intake port 18 provided on a side surface of the casing 1, an exhaust side of the high-pressure airflow generator 9, and a nozzle 12. A communicating exhaust passage 13 is provided. A heater 111 is provided in the middle of the exhaust passage 13 in the vicinity of the upstream side of the nozzle 12 to heat the air sent from the high-pressure airflow generator 9 to warm it.

In the casing 1 on the back side of the nozzle 12, a circuit board 114 including a hand detection sensor 106 and an LED 128 that emits blue light, which is a lighting device, is provided. The light emitting direction and the light receiving direction of the hand detection sensor 106 and the light emitting direction of the LED 128 are all provided toward the hand insertion portion 3, and are provided on a part of the casing 1 constituting the upper inner wall surface of the hand insertion portion 3. The hand detection sensor 106 detects the presence or absence of the hand in the hand insertion portion 3 through the transparent window 1a that transmits visible light or infrared light, and the light emitted from the LED 128 illuminates the hand insertion portion 3. A light shielding member 100 is provided between the LED 128 and the translucent window 1a as a light shielding means for shielding part of the irradiation light emitted by the LED 128. The optical paths of the hand detection sensor 106 and the LED 128 are blocked from each other by the wall surface so that they do not interfere with each other. In addition, a control circuit 150 that controls the operation of the high-pressure airflow generator 9 according to the detection signal of the hand detection sensor 106 is provided in the casing 1.

  FIG. 3 is an explanatory diagram of the hand drying apparatus according to the first embodiment of the present invention, and is an explanatory diagram showing the vicinity of the nozzle 12 as viewed from the arrow X in FIG. The nozzle 12 is in the form of an elongated slit provided linearly in the side surface direction, and the width W1 in the side surface direction is W1 = 120 mm. Further, the light shielding member 100 has an elongated slit shape extending in the lateral direction in parallel with the longitudinal direction of the nozzle so that the irradiation light emitted from the LED 128 becomes a strip-shaped irradiation light extending in the lateral direction at the manual insertion portion 3. The width W2 in the side surface direction is 7 mm. The nozzle 12 and the light shielding member 100 are provided so that the center positions are the same in the side surface direction.

  Although the light shielding member 100 is provided between the LED 128 and the transmission window 1a in the first embodiment, the transmission window 1a is formed in a long and narrow slit shape without the light shielding member 100. A light shielding function may be provided in 1a.

  One hand detection sensor 106 is provided at a position shifted by a distance L from the center of the nozzle 12 to the right side in the side surface direction, and the light shielding member 100 and the hand detection sensor 106 are aligned along the nozzle 12 in the side surface direction. It is out. The hand detection sensor 106 includes an infrared light emitting unit and a light receiving unit that receives the emitted infrared light. If there is an object in the optical axis direction of the light emitting unit, the infrared light emitted from the light emitting unit is reflected by the object. Therefore, the light receiving unit is a distance measuring type sensor that detects the object by receiving the reflected infrared light and calculating the distance to the object from the reflection angle.

  In the front-rear direction, the light shielding member 100 and the hand detection sensor 106 are located on the rear side (back side) from the nozzle 12, that is, on the back side of the hand drying chamber.

In the first embodiment, the light shielding member 100 and the hand detection sensor 106 are arranged side by side along the nozzle 12, but may be provided in parallel with the nozzle 12.

Next, the lighting device will be described in detail. FIG. 4 is an explanatory view of the hand drying apparatus according to the first embodiment of the present invention, and is a front view for explaining irradiation light. FIG. 5 is an explanatory diagram of the hand drying device according to the first embodiment of the present invention, and is a partial view of the vicinity of the water receiving portion 4 as viewed from the arrow Y in FIG. In FIG. 4, the irradiation light emitted from the LED 128 is partially blocked by the light blocking member 100, and is formed as an elongated irradiation light whose longitudinal direction is directed to the side surface and whose width in the side surface direction is the width W2. The light is emitted from the window 1 a toward the hand insertion portion 3. Since the LED 128 emits light radially from a point light source, the irradiation light that has passed through the light shielding member 100 diffuses more widely in the lateral direction and in the front-rear direction as the distance from the light shielding member 100 increases. In FIG. 4, Q represents an end in the side surface direction of the irradiation light, and the space between the left and right ends Q indicates the range of the irradiation light.

  As shown in FIG. 5, the irradiation light irradiated on the manual insertion 3 is projected on the water receiving portion 4 which is the bottom surface of the manual insertion portion 3. The image of the irradiation light projected on the receiving portion 4 has a width W3 in the side surface direction that is the width of the nozzle and is approximately equal to W1 (W3≈W1), approximately 120 mm, and a width W4 in the front-rear direction is approximately 40 mm. The front side is illuminated extensively.

Next, details of the hand detection sensor 106 will be described. As a hand detection sensor used in a hand dryer, generally, an infrared light emitting element and a light receiving element are housed in one package, and the light emitted from the light emitting element is reflected by an object such as a hand and received by the return light receiving element. Since a reflective infrared sensor is used with the threshold of the amount of light received to detect the presence or absence of an object such as a hand according to the amount of received infrared light, the infrared reflectance of the object is detected. Will depend on. For this reason, when used as a hand detection sensor, the reflectance varies depending on the color of the hand, so there is a problem that the hand cannot be appropriately detected as the detection sensor. A distance measuring sensor is used to detect the position of the object, not the amount of received infrared light.

The distance measuring sensor includes a light emitting unit and a light receiving unit in the same component, and there are several types. In the first embodiment, infrared rays are emitted, the emitted infrared rays are reflected by the object, the reflected light is received by the light receiving unit, and the distance to the object is detected from the light receiving angle of the reflected light. It is a distance sensor. Laser light and ultrasonic waves may be used instead of infrared rays. As a distance measuring sensor, in addition to the method of detecting the distance from the light reception angle of the reflected light, a method of detecting the distance from the round trip time by projecting a pulse signal, the position of the light projection signal and the light reception signal by transmitting a sine wave signal A system that detects the distance from the phase difference may be used. Both types of distance measuring sensors have high directivity, and the detection range is almost only on the optical axis in the vicinity.

  The position of the hand detection sensor 106 is inconvenient if it is not placed at a position where the user can detect any position within the range where the air flow from the nozzle 12 hits the hand. As a method of using the hand drying device, a hand-grip operation in which both hands placed in the hand insertion section 3 are rubbed while holding each other in the hand insertion section 3, or both hands are opened side by side and inserted into and removed from the hand insertion section 3 The two-hand insertion / removal operation can be repeated, and the one-hand insertion / removal operation can be repeated by repeatedly inserting / removing the hand insertion part 3 with one hand open, and changing hands when the hand is dry It is done.

  The width W1 in the side surface direction of the nozzle 12 is 120 mm. According to the “AIST human body size database 1991-92”, the 5th percentile of the width of a Japanese woman's hand is 83 mm. Since the maximum grip outer diameter is close to the hand shape in the hand gripping operation, the maximum grip outer diameter of 82 mm is used as the hand grip size.

  First, when the hand is held at the center position in the lateral direction of the nozzle 12 to dry the hand, the hand grip sensor 106 is disposed within 41 mm from the center of the nozzle 12 in the lateral direction because the maximum gripping outer diameter is 82 mm. There is a need to. In the following description of the positional relationship between the hand detection sensor 106 and the nozzle 12, the dimension in the side surface direction is omitted, but the dimension in the side surface direction is represented. Next, in the case where the hand is dried by the hand-holding operation at the left end of the nozzle 12, it is necessary to arrange the hand detection sensor 106 within 22 mm in the rightward direction from the center of the nozzle 12 in the lateral direction from 82−120 / 2 = 22 mm. is there. From the above, it is necessary to dispose the hand detection sensor 106 within 22 mm from the center of the nozzle 12 in the hand holding operation.

  Similarly, in the one-hand insertion / extraction operation, it is necessary to arrange the hand detection sensor 106 within 23 mm from the center of the nozzle 12 from the width of the hand 83 mm.

  In the two-hand insertion / extraction operation, since the total width of both hands is larger than the width W1 of the nozzle 12, a hand can be detected if the hand detection sensor 106 is within the range of the width W1 of the nozzle 12. However, the action of inserting and removing with both hands in contact with the palm in a horizontal position is very cramped, so in practice there is a gap between both hands with a slight separation between the two hands and a cross-shaped or reverse shape. The two-hand insertion / extraction operation is performed in a state where both hands are inclined in the shape of a letter. The “C” shape is a state in which the back of both hands is tilted so that the thumb is positioned above the little finger so that the back of the hand is up. In addition, the inverted C shape is a state in which the palm is tilted so that the palm is positioned above the little finger with the palm of both hands facing up.

Assuming that the left and right hands are inclined at 45 ° in the state of being inclined in the shape of a letter C or a reverse letter C, the center of the nozzle 12 is obtained from 83 × SIN (45 °) × 2 = 117 mm. From 1.5 mm is a blind spot where a hand cannot be detected. In addition, in the case of the letter C, since the thumb is positioned near the center of the nozzle 12, when the thumb starts to be pulled out from the hand insertion portion 3, the thumb is short so that when the thumb is completely pulled out, the range is 1.5 mm. Since the hand no longer exists in the inside, it becomes a blind spot where the hand cannot be detected. Furthermore, it is often used in a state where there is a slight gap between both hands, and since this gap is formed near the center of the nozzle 12, it is easy to become a blind spot where a hand cannot be detected. For this reason, it is preferable to provide a distance of at least 10 mm from the center of the nozzle 12.

  As described above, since most users use the nozzle 12 at almost the center, the user is limited to a specified range of people. When the user can use the nozzle 12 at the center, the center of the nozzle 12 is used. The distance L between the sensor 106 and the sensor 106 is preferably L = 1.5 to 41 mm.

  Furthermore, when L = 1.5 to 22 mm, the hand is detected by the hand detection sensor 106 regardless of the position in the range in which the user hits the air flow of the nozzle 12 to the hand. good.

  Furthermore, when L = 10 to 22 mm, the hand is detected by the hand detection sensor 106 even when a hand is inserted in a state where there is a gap between both hands.

Next, the operation at the time of use for drying the hand will be described. When a power switch (not shown) provided on the outline of the casing 1 is turned on (ON), the control circuit 150 is energized, the LED 128 is lit, and the hand detection sensor 106 is in the hand insertion portion 3. Therefore, the hand dryer is in a usable state (hereinafter referred to as a standby state) in which hand drying can be performed at any time.

The user standing in front of the hand-drying device can visually confirm the band of blue irradiation light projected on the water receiving part 4, so that both hands or one hand can be held in the range of the irradiation light. When inserted into the hand insertion portion 3 from the insertion port 2, the presence of a hand is detected by the hand detection sensor 106, and the high-pressure airflow generator 9 is activated by the control circuit 150.

When the high-pressure airflow generator 9 is activated, the air outside the hand dryer is sucked from the air inlets 18 provided on both side surfaces of the casing 1. The air sucked from the intake port 18 passes through the intake air passage 11, passes the upper side of the high-pressure air flow generator 9 toward the back side, moves downward, and is sucked from the suction side of the high-pressure air flow generator 9. . The high-pressure airflow generator 9 converts the air sucked from the intake side into high-pressure air from the exhaust side and exhausts it. The exhausted high-pressure air passes through the exhaust air passage 13 and becomes a high-speed airflow having high kinetic energy from the nozzle 12. It is converted and blown downward into the hand insertion portion 3.

The high-speed air flow blown out from the nozzle 12 hits a wet hand inserted in the hand insertion portion 3, and moisture attached to the hand is peeled off from the surface of the hand and blown off to dry the hand. Further, by moving the hand within the hand insertion portion 3, all water droplets adhering to the entire hand are eliminated, and the hand is dried. Since the illumination light shines brightly in the vicinity of the air inserted from the nozzle 12 among the hands inserted in the manual insertion portion 3, the user can always check the dryness. When the heater switch (not shown) provided in the casing 1 is turned on, the heater 111 is energized and the high-pressure air passing through the exhaust air passage 13 is heated. It is blown out and can be used without feeling cold in winter.

When the hand is removed from the hand insertion portion 3 after the hand drying process is completed, the hand detection sensor 106 detects the absence of the hand, and the high-pressure airflow generator 9 stops. The water droplets blown from the hand flow down toward the drain port 6 in the water receiving portion 4 having a forward tilt structure, and are stored in the drain container 7 from the drain port 6.

  According to the above configuration, since the irradiation light is projected on the water receiving portion 4 and the image of the blue belt-shaped irradiation light is projected on the water receiving portion 4, the user standing in front of the hand dryer is Aiming at the image of the blue irradiation light projected on the water receiving part 4, both wet hands or one hand can be put into the hand insertion part 3 from the hand insertion opening 2, so even a first-time user can put his hand anywhere It is easy to use without wondering whether to put it in.

  Furthermore, since the width W3 of the image of the blue belt-shaped irradiation light projected on the water receiving portion 4 is substantially the same as the width W1 of the nozzle 12 in the side surface direction, it is used in front of the hand dryer. If the person puts both wet hands or one hand into the hand insertion part 3 from the hand insertion port 2 over the range of the width W3 of the image of the blue irradiation light projected on the water receiving part 4, the nozzle is surely Since the hand can be inserted in the range of the air flow from 12, it is not necessary to correct the position of the hand so that the air flow is properly applied after putting the hand into the hand insertion portion 3. Good.

  Further, although not illustrated in the first embodiment, the width W3 in the side surface direction of the image of the irradiation light projected on the receiving portion 4 is shorter than the width W1 of the nozzle 12 (for example, W3 = 60 mm, etc.) <W1) may be performed, and if the user puts his hand in the range of the width W3 of the image of the irradiated light, but the air is unintentionally shifted slightly in the lateral direction, the air from the nozzle 12 It does not protrude from the range of the flow width W1, and is easy to use.

  Further, since the width of the irradiation light in the side surface direction increases as the distance from the nozzle 12 increases, the width of the irradiation light decreases as the hand approaches the nozzle 12, and the hand can be guided to the center of the nozzle 12. Even when the hand is moved largely in the hand insertion portion 3 such as a hand-holding operation, it is possible to prevent the hand from protruding from the range of the air flow from the nozzle 12.

  Further, since the hand detection sensor 106 uses a distance measuring sensor, the presence or absence of a hand can be detected without being affected by the color of the inserted hand.

In addition, since the hand detection sensor 106 uses a distance measuring sensor, the detection range has a strong directivity and is very narrow due to the characteristics of the distance measuring sensor. Since the hand detection sensor 106 is arranged at a position shifted from the hand, even if there is a gap between the inserted hands, the hand detection sensor 106 can detect the hand.

Furthermore, since the distance L between the center of the nozzle 12 and the hand detection sensor 106 is set to L = 1.5 mm to 41 mm in the side surface direction, a large number of users put their hands near the center of the nozzle 12 for use. Therefore, even if there is only one hand detection sensor in the hand insertion part 3, the hand detection sensor 106 can detect the hand with almost no problem, and power consumption by the hand detection sensor during standby can be reduced as much as possible. Yes.

Furthermore, if the distance L between the center of the nozzle 12 and the hand detection sensor 106 is set to L = 1.5 mm to 22 mm, even one hand detection sensor 106 provided in the hand insertion portion 3 is a hand detection sensor during standby. Power consumption can be reduced as much as possible, and the hand detection sensor 106 can detect the hand even if the user inserts the hand into any position within the range where the air flow from the nozzle 12 hits the hand. Hands can be detected reliably.

Furthermore, if the distance L between the center of the nozzle 12 and the hand detection sensor 106 is set to L = 10 mm to 22 mm, even one hand detection sensor 106 provided in the hand insertion portion 3 is consumed by the hand detection sensor during standby. The power can be reduced as much as possible, and even if a hand is inserted with a gap between both hands, the hand can be detected by the hand detection sensor 106, and the hand can be detected most reliably.

Embodiment 2. FIG.
FIG. 6 is a right side cross-sectional view of the hand dryer according to Embodiment 2 of the present invention. As shown in FIG. 6, the casing 1 is provided with a substantially U-shaped hand insertion portion 3 that is open at the upper side and the side surface and viewed from the side. The nozzles 12 are respectively provided on the inner wall surface, and the airflows ejected from the nozzles 12 are made to face each other and ejected to the manual insertion portion 3. A hand detection sensor 106 and an LED 128 are provided toward the hand insertion portion 3 on the inner wall surface on the back side of the hand insertion portion 3. The irradiation light emitted from the LED 128 is projected as an image of the irradiation light of a blue band on the inner wall surface on the front side of the manual insertion portion 3. A drainage port (not shown) is provided at the bottom of the U-shape of the manual insertion portion 3, and a water pipe (not shown) is provided between the drainage port (not shown) and the drain container 7. Water generated in the insertion portion 3 is guided to the drain container 7 through a drain port (not shown) and a water pipe (not shown).

The main differences from the first embodiment are as described above, and the other points are the same as those of the first embodiment, and the description thereof will be omitted.

According to the above configuration, there is an effect equivalent to that of the first embodiment.

DESCRIPTION OF SYMBOLS 1 Casing 1a Translucent window 2 Hand insertion port 3 Hand insertion part 4 Water receiving part 5 Water barrier structure 6 Drainage port 7 Drain container 8 Base 9 High pressure air flow generator 11 Intake passage 12 Nozzle 13 Exhaust passage 16 Cover 18 Intake port 100 Light shielding Member 106 Hand detection sensor 111 Heater 114 Circuit board 128 LED (lighting device)
150 Control circuit L Distance Q Edge of irradiated light X Arrow view Y Arrow view W1 Nozzle width W2 Irradiation light width W3 Irradiation light width W4 Irradiation light width

Claims (6)

A hand insertion portion formed by a casing forming an outer shell and opened toward the front surface or the upper surface;
A nozzle that is provided on at least one of the wall surfaces forming the manual insertion portion and blows an air flow to the manual insertion portion;
A hand detection sensor that is provided on the wall surface and detects the presence or absence of a hand in the hand insertion portion;
An illuminating device that is provided on the wall surface and irradiates the hand insertion portion with irradiation light;
An air flow generator that is housed in the casing and blows out an air flow from the nozzle;
A control circuit for controlling the operation of the airflow generator according to the detection signal of the hand detection sensor;
With
The image of the irradiation light from the illumination device is projected on the other wall surface that forms the manual insertion portion and faces the wall surface, and the width in the side surface direction of the image of the irradiation light is equal to the width in the side surface direction of the nozzle Or the width in the side surface direction of the image of the irradiation light is shorter than the width in the side surface direction of the nozzle, and the center in the side surface direction of the image of the irradiation light and the center in the side surface direction of the nozzle are the same position. And hand dryer. The hand-drying apparatus according to claim 1, wherein a width in a side surface direction of the image of the irradiation light is increased from the one wall surface toward the other wall surface.   The hand detection sensor provided in the hand insertion portion is composed of a single distance measuring sensor for detecting a distance, and is provided at a position shifted from the center position in the side surface direction of the nozzle in the side surface direction. The hand dryer according to claim 1.   The hand-drying device according to claim 3, wherein the hand detection sensor is shifted in a range of 1.5 mm to 41 mm in a side surface direction from a center position in a side surface direction of the nozzle. A hand insertion portion formed by a casing forming an outer shell and opened toward the front;
A nozzle that is provided on a wall surface forming the upper surface of the manual insertion portion and blows an air flow downward toward the manual insertion portion;
A hand detection sensor that is provided on the wall surface and detects the presence or absence of a hand in the hand insertion portion;
An illuminating device that is provided on the wall surface and irradiates irradiation light downward toward the hand insertion portion;
An air flow generator that is housed in the casing and blows out an air flow from the nozzle;
A control circuit for controlling the operation of the airflow generator according to the detection signal of the hand detection sensor;
With
The image of the irradiation light from the illumination device is projected on the water receiving portion that forms the lower surface of the manual insertion portion, and the width in the side surface direction of the image of the irradiation light is equal to the width in the side surface direction of the nozzle or The width in the side surface direction of the image of the irradiation light is shorter than the width in the side surface direction of the nozzle, and the center in the side surface direction of the image of the irradiation light and the center in the side surface direction of the nozzle are the same position. Drying equipment. The hand-drying device according to claim 5, wherein a width in a side surface direction of the image of the irradiation light is increased from the wall surface toward the water receiving portion.

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