JP2020067659A - Display unit - Google Patents

Abstract

To provide a display unit that can reduce a manufacturing cost and can suitably display an object on a reflection part 3, and an appliance.SOLUTION: A display unit 102 comprises: a reflection part 3; a light guide plate display 1; and a sensor part 2. The reflection part 3 has a mirror part 31, and a half mirror part 32 that has a larger transmittance than that of the mirror part 31. The light guide plate display 1 is arranged side by side with the half mirror part 32. The light guide plate display 1 has a light source 11, and a light guide plate 10 that can reflect light from the light source 11 to display a predetermined pattern 30. The sensor part 2 detects an object approaching the predetermined pattern 30 by using light with an infrared wavelength. Here, the half mirror part 32 has a first reflectance M1 of 95% or less in a visible light wavelength.SELECTED DRAWING: Figure 7

Description

  The present invention relates to a display device and a device.

  In a conventional display device, a half mirror unit and a liquid crystal display (display unit) are disclosed (see Patent Document 1). In this display device, a part of the mirror surface portion is composed of a half mirror portion. That is, the mirror surface portion is composed of a mirror portion and a half mirror portion. The liquid crystal display is arranged in close contact with the half mirror portion on the back surface of the half mirror portion. With this configuration, the user can visually recognize the information displayed on the liquid crystal display from the front of the mirror surface portion via the half mirror portion.

JP, 2008-206831, A

  In a conventional display device, a half mirror portion is used for the mirror surface portion in order to allow a user to visually recognize information on the liquid crystal display from the front of the mirror surface portion. However, in this case, since the reflectance (transmittance) of the mirror portion and the reflectance (transmittance) of the half mirror portion are different, there is a problem that the boundary line between the mirror portion and the half mirror portion is visually recognized by the user. That is, there is a problem that both the object reflected on the mirror surface portion and the above-mentioned boundary line are visually recognized by the user.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a display device and a device that can appropriately display an object on a reflecting portion.

  A display device according to one aspect includes a reflection unit, a display unit, and a sensor unit. The reflecting portion has a mirror portion and a half mirror portion having a transmittance higher than that of the mirror portion. The display unit is arranged side by side with the half mirror unit. The display unit is arranged side by side with the half mirror unit. The display unit includes a light source and a light guide plate configured to display a predetermined pattern by reflecting light from the light source. The sensor unit detects an object approaching a predetermined pattern by using light having an infrared wavelength. Here, the half mirror portion has a first reflectance of 95% or less at a visible light wavelength.

  In the display device according to this aspect, since the half mirror portion has the first reflectance in the range of 95% or less at the visible light wavelength, the difference between the reflectance of the mirror portion and the reflectance of the half mirror portion should be reduced. You can

  Thereby, even if the reflecting section has the mirror section and the half mirror section, it is possible to allow the user to appropriately recognize the object reflected on the reflecting section without making the user visually recognize the boundary line between the mirror section and the half mirror section. You can That is, the target can be displayed appropriately on the reflection part.

  The first reflectance may be in the range of 75% or more and 95% or less at the visible light wavelength. As a result, the target can be displayed more appropriately on the reflecting section.

  The half mirror part may further have a second reflectance of 70% or less at the infrared wavelength. By setting the second reflectance in this way, the infrared rays of the sensor section easily pass through the half mirror section. This allows the sensor unit to easily detect an object approaching the predetermined pattern.

  The half mirror unit may be configured integrally with the mirror unit. As a result, the target can be displayed more appropriately on the reflecting section.

  The half mirror section may be configured separately from the mirror section. Thus, the two parts having different characteristics, that is, the mirror part and the half mirror part can be manufactured individually, so that the manufacturing cost of the display device can be reduced.

  The half mirror unit may be integrally formed with the light guide plate by depositing a reflective material on the light guide plate. In this way, the number of parts can be reduced by integrally forming the half mirror part with the light guide plate. That is, the manufacturing cost of the display device can be reduced. Moreover, the thickness of the half mirror portion can be reduced by using the light guide plate as the base material of the half mirror portion.

  The light guide plate may be disposed between the half mirror unit and the sensor unit. In this case, the respective components of the display device are arranged side by side in the order of the mirror portion, the half mirror portion, the light guide plate, and the sensor portion. Therefore, the size of the half mirror portion can be made smaller than that in the case where the light guide plate and the sensor portion are arranged along the mirror portion. That is, the manufacturing cost of the display device can be reduced.

  The first reflectance may have a reference reflectance at a visible light wavelength and an RGB reflectance that is smaller than the reference reflectance at an RGB wavelength within the visible light wavelength.

  Here, if only the reference reflectance is used as the first reflectance in order to reduce the difference between the reflectance of the mirror portion and the reflectance of the half mirror portion, the brightness of a predetermined pattern, for example, is displayed by the display portion. The brightness of the displayed image may decrease. However, in the display device according to this aspect, the first reflectance has not only the reference reflectance but also the above-described RGB reflectance, so that the predetermined pattern can be suitably displayed.

  The first reflectance at the boundary between the half mirror portion and the mirror portion may be smaller than the first reflectance at the central portion of the half mirror portion.

  Accordingly, at the boundary between the half mirror section and the mirror section, the user can visually recognize only the target at the reflecting section without the user visually recognizing the boundary line between the mirror section and the half mirror section. In addition, a predetermined pattern can be suitably displayed at the center of the half mirror section.

  The light guide plate may have a plurality of light guide portions. In this case, the light from the light source reflected by the plurality of light guides converges at a plurality of fixed points corresponding to the plurality of light guides. A predetermined pattern is imaged in space by a collection of lights that converge at a plurality of fixed points. As a result, it is possible to preferably display the predetermined pattern.

  A display device according to one aspect includes a reflection unit, a display unit, and a sensor unit. The reflecting portion has a mirror portion and a half mirror portion having a transmittance higher than that of the mirror portion. The display unit is arranged side by side with the half mirror unit. The display unit includes a light source and a light guide plate configured to display a predetermined pattern by reflecting light from the light source. The sensor unit detects an object approaching a predetermined pattern by using light having an infrared wavelength. Here, in the half mirror portion, the first reflectance at the visible light wavelength is different from the second reflectance at the infrared wavelength.

  In the display device according to this aspect, since the first reflectance is different from the second reflectance in the half mirror portion, it is possible to prevent the user from visually recognizing the light guide plate when the light source is turned off.

  The first reflectance may be higher than the second reflectance. This makes it possible to suitably prevent the light guide plate from being visually recognized by the user when the light source is turned off.

  The difference obtained by subtracting the second reflectance from the first reflectance may be set in the range of 5% or more and less than 95%. Thereby, when the light source is turned off, the light guide plate can be more preferably prevented from being visually recognized by the user.

  A device according to one aspect includes the above-described display device. As described above, by using the above-described display device in the device, the device can obtain the same effect as the above-described effect.

  The device may be a washbasin or a vanity. In this case, the device has a main body portion and a mirror surface portion. The mirror surface portion is attached to the main body portion. The mirror surface portion has a display device. Thereby, the washbasin or the vanity can obtain the same effect as the above-mentioned effect by the display device of the mirror surface portion.

  The device may be a home appliance. In this case, the device has a housing and a display device. The display device is provided in the housing. Thereby, the home appliance can obtain the same effect as the above-mentioned effect by the display device of the housing.

  According to the present invention, in the display device and the device, it is possible to preferably display the target on the reflecting section.

The schematic diagram which shows the structure of the apparatus which concerns on 1st Embodiment. FIG. 2 is a schematic diagram of the display device taken along the section line II-II in FIG. 1. The schematic diagram which shows the structure of a light-guide plate. The block diagram which shows the structure of a display device. The figure for demonstrating setting of a sensor voltage. Sectional drawing of a light-guide plate for demonstrating the shape of a prism. The perspective view for explaining the shape of a prism. The side view of a 1st pattern. The side view of a 2nd pattern. FIG. 6 is a characteristic diagram for explaining a reflection characteristic of a reflecting portion. FIG. 6 is a characteristic diagram for explaining a reflection characteristic of a reflection section in the device according to the second embodiment. The schematic diagram which shows the structure of the display apparatus in the apparatus which concerns on 3rd Embodiment. The schematic diagram which shows the structure of the display apparatus in the apparatus which concerns on 3rd Embodiment. The schematic diagram which shows the structure of the display apparatus in the apparatus which concerns on 4th Embodiment. The schematic diagram which shows the structure of the display apparatus in the apparatus which concerns on 5th Embodiment. The characteristic view for demonstrating the reflection characteristic of the reflection part in the apparatus which concerns on 6th Embodiment. The schematic diagram which shows the structure of the apparatus which concerns on other embodiment.

<First Embodiment>
The display device 102 according to the first embodiment will be described below. FIG. 1 is a schematic diagram showing a device 100 to which the display device 102 is applied. The device 100 is, for example, a washbasin. As shown in FIG. 1, the device 100 includes a main body 101 and a display device 102.

(Main body)
As shown in FIG. 1, the main body 101 has a first main body 101a and a second main body 101b. The first main body 101a is installed on the floor surface. The second main body 101b is provided on top of the first main body 101a. The second main body 101b may be formed integrally with the first main body 101a, or may be formed separately from the first main body 101a.

(Display device)
As shown in FIG. 1, the display device 102 is provided in the main body 101. For example, the display device 102 is attached to the second main body 101b. The display device 102 displays information about the device 100. As shown in FIG. 2, the display device 102 includes a light guide plate display 1 (an example of a display unit), a sensor unit 2, and a reflecting unit 3.

-Light guide plate display-
As shown in FIG. 2, the light guide plate display 1 is arranged side by side with the reflector 3. For example, the light guide plate display 1 is arranged side by side with the half mirror section 32 (described later). More specifically, the light guide plate display 1 is arranged side by side with the half mirror section 32 on the first side.

  The light guide plate display 1 displays the predetermined pattern 30 on the second side opposite to the first side via the half mirror section 32. The first side corresponds to the back side of the half mirror section 32 of the reflecting section 3. The second side corresponds to the front side (front) of the half mirror section 32 of the reflecting section 3.

  That is, the light guide plate display 1 is arranged side by side with the half mirror section 32 on the back side of the half mirror section 32. The light guide plate display 1 displays a predetermined pattern 30 in front of the half mirror section 32 via the half mirror section 32.

  As shown in FIG. 3, the light guide plate display 1 includes a light guide plate 10 and a light source 11. As shown in FIG. 4A, the light guide plate display 1 further includes a controller 13 and a signal output device 14.

  The light guide plate 10 is configured to be able to display the predetermined pattern 30 in front of the half mirror portion 32 by reflecting the light from the light source 11. In the present embodiment, as shown in FIGS. 6A and 6B, the predetermined pattern 30 has a first pattern 30a and a second pattern 30b.

  The first pattern 30a and the second pattern 30b may be displayed as different patterns from each other, or may be displayed by modifying one of the first pattern 30a and the second pattern 30b. .

  In the present embodiment, the example in which the predetermined pattern 30 has the first pattern 30a and the second pattern 30b is shown, but the number of patterns may be one or three. It may be more than one.

  As shown in FIG. 2, the light guide plate 10 is arranged on the back side of the half mirror section 32. The light guide plate 10 is made of a translucent material. The light guide plate 10 is preferably formed of a transparent resin such as polymethylmethacrylate (PMMA), polycarbonate, or a cycloolefin polymer, and a material such as glass.

  As shown in FIG. 3, the light source 11 emits light from the end surface of the light guide plate 10 toward the inside of the light guide plate 10. The light source 11 is controlled based on a control signal from a controller 13 (described later). The light source 11 is, for example, an LED (Light Emitting Diode). However, the light source 11 is not limited to the LED, and may be another light source such as an OLED (Organic Light Emitting Diode).

  Specifically, in the light guide plate display 1 having the above configuration, the light guide plate 10 guides the light from the light source 11 and forms the image of the predetermined pattern 30 in the space in front of the half mirror portion 32. That is, the light guide plate 10 projects the predetermined pattern 30 visually recognized by the user into the space without the screen.

  The light guide plate 10 has an emission surface 10a, a back surface 10b, and end surfaces 10c-10f. The emission surface 10a emits the light from the light source 11. The back surface 10b is located on the opposite side of the emission surface 10a. Light from the light source 11 is incident on the end surface 10c. The light from the light source 11 may be incident on the other end faces 10d-10f.

  The front surface of the emitting surface 10a may be coated with a hydrophilic coating or a water-absorbing coating in order to prevent dew condensation or the like. Further, the front surface of the emission surface 10a may be warmed by a heater (not shown).

  Note that FIG. 3 shows an example in which the light guide plate 10 is arranged such that the emission surface 10a is parallel to the vertical direction. However, the light guide plate 10 may be installed so that the emission surface 10a forms a predetermined angle not including 0 degrees with respect to the vertical direction.

  The light guide plate 10 has a plurality of prisms 20. As shown in FIG. 5A, the prism 20 is provided on the back surface 10 b of the light guide plate 10. For example, the prism 20 reflects the light from the light source 11 toward the emission surface 10 a of the light guide plate 10. As shown in FIGS. 2 and 3, the reflected light reflected by the prism 20 passes through the half mirror section 32 and is converged at a fixed point corresponding to each light guide section 12 (described later). That is, the prism 20 is arranged on the back surface 10 b of the light guide plate 10 so that the reflected light converges at a fixed point corresponding to each light guide unit 12.

  For example, as shown in FIG. 5A, the prism 20 is formed by dimples recessed from the back surface 10b of the light guide plate 10. For example, as shown in FIG. 5B (a), the prism 20 has a triangular pyramid shape. Further, the prism 20 may have a triangular prism shape as shown in FIG. 5B (b). Further, as shown in FIG. 5B (c), the prism 20 may have a shape having a curved surface.

  As shown in FIG. 3, the light guide plate 10 further includes a plurality of light guide portions 12. Each of the plurality of light guide portions 12 is provided so as to correspond to the plurality of fixed points included in the predetermined pattern 30.

  For example, the plurality of light guide sections 12 include a first light guide section 12a, a second light guide section 12b, and a third light guide section 12c. The first light guide portion 12a corresponds to the first fixed point A1 included in the predetermined pattern 30. The second light guide portion 12b corresponds to the second fixed point A2 included in the predetermined pattern 30. The third light guide portion 12c corresponds to the third fixed point A3 included in the predetermined pattern 30.

  The light incident on the first light guide portion 12a is reflected by the plurality of prisms 20 included in the first light guide portion 12a so as to converge on the first fixed point A1. Further, the light incident on the second light guide portion 12b is reflected by the plurality of prisms 20 included in the second light guide portion 12b so as to converge on the second fixed point A2. Further, the light incident on the third light guide portion 12c is reflected by the plurality of prisms 20 included in the third light guide portion 12c so as to converge on the third fixed point A3.

  As a result, the wavefronts of the light from the first light guide section 12a, the second light guide section 12b, and the third light guide section 12c are emitted from the first fixed point A1, the second fixed point A2, and the third fixed point A3, respectively. It becomes the wavefront of light.

  In this way, the light from the light source 11 is reflected by the plurality of light guide sections 12 and converges at a plurality of fixed points corresponding to the plurality of light guide sections 12. As a result, a wavefront of light that is emitted from a plurality of fixed points is formed. A predetermined pattern 30 that can be recognized by the user is imaged in space by the collection of lights that converge at these fixed points.

  As shown in FIG. 4A, the controller 13 includes a processor 51 such as a CPU (Central Processing Unit) and a memory 52 such as a RAM (Random Access Memory) and a ROM (Read Only Memory). The memory 52 stores computer instructions executed by the processor 51 and data for controlling the light guide plate display 1. The controller 13 controls the light source 11 and the signal output device 14. The controller 13 receives the detection signal from the sensor unit 2.

  The signal output device 14 outputs a signal according to a command from the controller 13 via the signal line 61. The signal line 61 is connected to an external device. The signal output device 14 includes, for example, an analog output circuit. The signal output device 14 may include a digital output circuit. The signal from the signal output device 14 has a command value. The command value is, for example, a voltage value. However, the command value may be a current value.

-Sensor-
The sensor unit 2 is a proximity sensor that detects an object in a non-contact manner. Here, the sensor unit 2 detects an object approaching the predetermined pattern 30 by using light having an infrared wavelength. For example, the sensor unit 2 detects an object approaching the imaging space of the first and second patterns 30a and 30b in a non-contact manner.

  As shown in FIG. 2, the sensor unit 2 is, for example, a photoelectric sensor. The sensor unit 2 has a light projecting element 2a and a light receiving element 2b. The light projecting element 2 a emits infrared rays toward the half mirror section 32. The light receiving element 2b receives the infrared light reflected by the object. The sensor unit 2 outputs a signal indicating the detection result to the controller 13. The light projecting element 2a and the light receiving element 2b may be separately provided in separate units.

  Specifically, the sensor unit 2 is a limited reflection sensor. The limited reflection sensor detects the presence of an object when the object is located at a predetermined detection position P. The limited reflection sensor may detect the presence of the object when the object is located at at least one of the plurality of predetermined detection positions P. The predetermined detection position P is included in the imaging space of the first pattern 30a and the imaging space of the second pattern 30b.

  For example, the predetermined detection position P is included in the button portion of the first pattern 30a. Specifically, the predetermined detection position P is included in the button pressing surface (see FIGS. 3, 6A, and 6B). Thereby, the sensor unit 2 detects that the user's finger is located at the position of the button unit. That is, the sensor unit 2 detects a user's input operation on the button unit.

  The sensor unit 2 is not limited to the limited reflection sensor, and may be another photoelectric sensor such as a TOF (time of flight) system. Alternatively, the sensor unit 2 is not limited to the photoelectric sensor, and may be a unit that detects an object through another medium such as a radio wave, a magnetic field, or heat.

  Here, when the device 100 is a wash basin, fog, steam, or the like may be generated in front of the reflecting section 3. In this case, the sensor unit 2 may detect fog, steam, or the like as an object approaching the predetermined pattern 30. Therefore, it is preferable to set the detection signal output from the sensor unit 2 to the controller 13, for example, the voltage value as follows.

  For example, the voltage VS (object detection voltage) at which the sensor unit 2 detects an object is set to a predetermined threshold value or higher. In this case, as shown in FIG. 4B, the object detection voltage VS is set to 1/10 or more of the maximum value V0 (reference voltage) of the voltage at which the sensor unit 2 detects the standard reflection plate (white reflection plate). . Here, “V0 / 10” corresponds to the predetermined threshold value.

  In FIG. 4B, the maximum value of the voltage at which the sensor unit 2 detects fog, steam, etc. is shown as the foreign matter detection voltage V1. The foreign matter detection voltage V1 is, for example, less than 1/10 of the reference voltage V0. In this way, by setting the object detection voltage VS to 1/10 or more of the reference voltage V0, it is possible to avoid detection by the sensor unit 2 with respect to fog or steam. That is, even if fog, steam, or the like is generated in front of the reflector 3, only the object approaching the sensor 2 can be detected by the sensor 2.

  In this embodiment, the detection position P of the sensor unit 2 is set at the center of the detection range of the sensor unit 2. By thus setting the detection position P of the sensor unit 2, it is possible to preferably detect the object.

  The sensor unit 2 is arranged side by side with the half mirror unit 32 on the rear surface side of the half mirror unit 32 of the reflecting unit 3. The sensor unit 2 detects an object approaching the predetermined pattern 30 (first pattern 30a or second pattern 30b) displayed in front of the half mirror unit 32 via the half mirror unit 32. The sensor unit 2 and the light guide plate display 1 are arranged side by side along the half mirror unit 32. Specifically, the sensor unit 2 and the light guide plate 10 are arranged side by side along the half mirror unit 32.

  In the present embodiment, the controller 13 detects an input operation with respect to the predetermined pattern 30 when an object is detected by the sensor unit 2. The controller 13 outputs a detection signal from the signal output device 14 according to the input operation corresponding to the predetermined pattern 30. As a result, the controller 13 recognizes the input operation by the user based on the detection signal from the sensor unit 2.

  For example, as shown in FIG. 6A, when the sensor unit 2 recognizes an object while the first pattern 30a is displayed, the controller 13 displays the second pattern 30b (see FIG. 6B). On the other hand, as shown in FIG. 6B, when the sensor unit 2 recognizes an object while the second pattern 30b is displayed, the controller 13 displays the first pattern 30a (see FIG. 6A).

  As described above, the controller 13 selects one of the first pattern 30a and the second pattern 30b and the other of the first pattern 30a and the second pattern 30b according to the detection signal of the sensor unit 2. Switch to.

  In the present embodiment, the first pattern 30a is, for example, an image showing that the washbasin switch is off. When the first pattern 30a is displayed, for example, the light (not shown) of the washbasin is turned off. The second pattern 30b is an image showing that the switch of the washbasin is on. When the second pattern 30b is displayed, for example, the light of the washbasin is turned on. This on / off control is executed by the controller 13.

-Reflector-
As shown in FIG. 2, the reflection section 3 includes a mirror section 31 and a half mirror section 32. The mirror portion 31 is formed by stacking the first reflecting material 31b on the base material 31a. The base material 31a is formed of a translucent material. For example, the base material 31a is formed of a translucent material such as glass and a transparent film. The front surface of the base material 31a may be coated with a hydrophilic coating or a water-absorptive coating in order to prevent adhesion of water drops and the like. The front surface of the base material 31a may be warmed by a heater (not shown). As a result, anti-fog on the front surface of the base material 31a is realized. The first reflecting material 31b is formed of, for example, a metal material such as silver.

  The mirror part 31 is formed by a copper-silvered mirror using a silver mirror reaction. In this case, first, a masking process is performed on the base material 31a in the portion where the half mirror portion 32 is formed. A second reflecting material 32b (described later) of the half mirror portion 32 is placed on the masked portion of the substrate.

  In this state, a surface active material such as tin solution is sprayed on the base material 31a. Next, a reducing agent such as a silver nitrate solution and sodium hydroxide is sprayed on the base material 31a. Thereby, the silver film as the first reflecting material 31b is formed on the base material 31a. Finally, after the silver film is formed, a protective film is formed on the silver film by spraying a copper solution on the silver film. This protective film prevents deterioration of the silver film. Further, the back surface protection film is applied to the protection film.

  The mirror part 31 may be formed by a vacuum evaporation mirror using vacuum evaporation plating. In this case, first, a masking process is performed on the base material 31a in the portion where the half mirror portion 32 is formed. A second reflecting material 32b (described later) of the half mirror portion 32 is overlaid on the portion of the base material 31a that has been masked.

  In this state, the base material 31a is placed in the vapor deposition vacuum apparatus, so that the base material 31a is subjected to vacuum vapor deposition plating. Thereby, the silver film as the first reflecting material 31b is formed on the base material 31a. Finally, after the silver film is formed, the protective film is formed by an organic lead-free resin coating material such as epoxy-modified amino liquid.

  The mirror portion 31 formed in this manner has the following characteristics by adjusting the thickness of the first reflecting material 31b, for example.

  As shown in FIG. 7, the mirror section 31 has a first reflectance M1 at a visible light wavelength and a second reflectance M2 at an infrared wavelength. The first reflectance M1 is set in a range of 80% or more and 90% or less, for example.

  In addition, in the present embodiment, the reflectance M3 of the mirror portion 31 at the ultraviolet wavelength is substantially the same as the first reflectance M1.

  As shown in FIG. 2, the half mirror section 32 is configured integrally with the mirror section 31. The half mirror portion 32 is formed by stacking the second reflecting material 32b on the base material 31a.

  For example, the masking process described above is removed from the base material 31a. The second reflecting material 32b is formed on the base material 31a where the masking process is removed. The second reflecting material 32b is formed, for example, by stacking materials having different bending rates in layers. The formation form of the half mirror part 32 is substantially the same as the formation of the mirror part 31 described above, except that the materials are laminated in layers, and therefore the description thereof is omitted here.

  The half mirror portion 32 formed in this manner has the following characteristics by adjusting the thickness of each layer of the second reflecting material 32b, for example.

  As shown in FIG. 7, the half mirror unit 32 has a third reflectance H1 at a visible light wavelength and a fourth reflectance H2 at an infrared wavelength. The third reflectance H1 is different from the fourth reflectance H2. For example, the third reflectance H1 is higher than the fourth reflectance H2. In detail, the difference obtained by subtracting the fourth reflectance H2 from the third reflectance H1 is set in the range of 5% or more and less than 95%.

  The third reflectance H1 is set in the range of 75% or more and 95% or less at the visible light wavelength. The fourth reflectance H2 is set in the range of 70% or less at the infrared wavelength. In this embodiment, the reflectance H3 of the half mirror portion 32 at the ultraviolet wavelength is substantially the same as the third reflectance H1.

  The third reflectance H1 is an example of the first reflectance recited in the claims. The fourth reflectance H2 is an example of the second reflectance described in the claims.

  The transmittance of the half mirror section 32 is higher than the transmittance of the mirror section 31. In this embodiment, the transmittance of the mirror section 31 is substantially zero. The transmittance of the mirror unit 31 may be a value other than zero. The transmittance of the half mirror section 32 may be set to any value as long as it is higher than the transmittance of the mirror section 31.

  In the display device 102 having the above configuration, the first reflectance M1 of the mirror portion 31 is set in the range of 80% or more and 90% or less at the visible light wavelength. The third reflectance H1 of the half mirror portion 32 is set in the range of 75% or more and 95% or less at the visible light wavelength. By setting the first reflectance M1 and the third reflectance H1 in this way, the difference between the reflectance of the mirror portion 31 and the reflectance of the half mirror portion 32 can be reduced.

  Thereby, even if the reflection unit 3 includes the mirror unit 31 and the half mirror unit 32, only the target imaged on the reflection unit 3 is displayed without the user visually recognizing the boundary line between the mirror unit 31 and the half mirror unit 32. It can be visually recognized by the user. That is, the target can be suitably displayed on the reflecting section 3.

  Further, the half mirror unit 32 is set in a range of 70% or less at the infrared wavelength. This makes it easier for infrared rays of the sensor unit 2 to pass through the half mirror unit 32, so that the sensor unit 2 can easily detect an object approaching the first pattern 30a and the second pattern 30b. Further, since the half mirror section 32 is configured integrally with the mirror section 31, it is possible to preferably display the target on the reflecting section 3.

<Second Embodiment>
The configuration of the second embodiment is substantially the same as the configuration of the first embodiment, except for the characteristics of the reflecting section 3. Therefore, in the second embodiment, only the configuration different from that of the first embodiment will be described. The configuration omitted here is similar to the configuration of the first embodiment.

  As shown in FIG. 2, the reflection section 3 includes a mirror section 31 and a half mirror section 32. Since the configuration of the mirror unit 31 is the same as that of the first embodiment, the description of the mirror unit 31 is omitted.

  The half mirror portion 32 is formed by stacking the second reflecting material 32b on the base material 31a. For example, the half mirror portion 32 is formed to have the following characteristics by adjusting the thickness of each layer of the second reflecting material 32b.

  As shown in FIG. 8, the half mirror section 32 has a fifth reflectance H4 at the visible light wavelength. The fifth reflectance H4 is an example of the first reflectance in the claims.

  The fifth reflectance H4 has a reference reflectance H41 and an RGB reflectance H42. RGB is an acronym for the three primary colors (Red, Green, Blue).

  The reference reflectance H41 is a reflectance corresponding to the first reflectance M1 of the first embodiment. The RGB reflectance H42 is the reflectance at the RGB wavelengths within the visible light wavelength. The RGB reflectance H42 is set to be smaller than the reference reflectance H41.

  For example, the RGB reflectance H42 has an R reflectance H42a, a G reflectance H42b, and a B reflectance H42c. The R reflectance H42a, the G reflectance H42b, and the B reflectance H42c are set in the range of 30% or more and 90% or less at the B wavelength within the visible light wavelength.

  In the display device 102 having the above configuration, the RGB reflectance H42 is set smaller than the reference reflectance H41, so the difference between the first reflectance M1 of the mirror portion 31 and the reference reflectance H41 of the half mirror portion 32 is reduced. Even in this case, the first pattern 30a and the second pattern 30b can be preferably displayed without reducing the brightness of the first pattern 30a and the second pattern 30b.

<Third Embodiment>
The configuration of the third embodiment is substantially the same as the configuration of the first embodiment except the configuration of the reflecting section 3. Therefore, in the third embodiment, only the configuration different from that of the first embodiment will be described. The configuration omitted here is similar to the configuration of the first embodiment.

  As shown in FIGS. 9A and 9B, the reflection section 3 includes a mirror section 31 and a half mirror section 32. Since the configuration of the mirror unit 31 is the same as that of the first embodiment, the description of the mirror unit 31 is omitted.

  The half mirror unit 32 is configured separately from the mirror unit 31. The half mirror portion 32 is formed by stacking the second reflecting material 32b on the base material 32a. The base material 32 a of the half mirror portion 32 is a member different from the base material 31 a of the mirror portion 31. The base material 32a of the half mirror portion 32 is formed of a translucent material such as glass and a transparent film. A hydrophilic coating or a water-absorbing coating may be applied to the front surface of the base material 32a in order to prevent adhesion of water drops and the like. Further, the front surface of the base material 32a may be warmed by a heater (not shown). This prevents the front surface of the base material 32a from being fogged.

  In the half mirror section 32, a silver film as the second reflecting material 32b is formed on the base material 32a by performing the same processing on the base material 32a as in the first embodiment.

  The half mirror unit 32 is arranged side by side with the mirror unit 31 on the back side of the mirror unit 31. Specifically, the half mirror unit 32 is arranged on the back surface of the mirror unit 31 so as to cover the portion of the base member 31 a of the mirror unit 31 from which the masking process has been removed.

  Specifically, when the base material 31a of the half mirror portion 32 is thick, for example, when the thickness of the base material 32a of the half mirror portion 32 is 0.5 mm or more, as shown in FIG. The reflective material 32b is disposed on the first reflective material 31b side of the mirror section 31.

  On the other hand, when the base material 31a of the half mirror portion 32 is thin, for example, when the thickness of the base material 32a of the half mirror portion 32 is less than 0.5 mm, the base material 32a of the half mirror portion 32 is as shown in FIG. 9B. Are arranged on the first reflecting material 31b side of the mirror portion 31.

  In the display device 102 having the above configuration, since the half mirror section 32 is configured separately from the mirror section 31, the mirror section 31 and the half mirror section 32 can be manufactured individually. Thereby, the manufacturing cost of the display device 102 can be reduced.

  Further, when the base material 32 a of the half mirror portion 32 is thick, the second reflecting material 32 b of the half mirror portion 32 is arranged on the first reflecting material 31 b side of the mirror portion 31, so that the mirror portion 31 and the half mirror portion 32 are It becomes difficult for the user to visually recognize the boundary line. This allows the user to visually recognize only the object reflected in the reflection section 3. That is, the target can be suitably displayed on the reflecting section 3.

<Fourth Embodiment>
The configuration of the fourth embodiment is substantially the same as the configuration of the third embodiment except the configuration of the light guide plate display 1. Therefore, in the fourth embodiment, only the configuration different from that of the third embodiment will be described. The configuration omitted here conforms to the configuration of the third embodiment.

  As shown in FIG. 10, the half mirror section 32 is configured separately from the mirror section 31. The light guide plate display 1 is arranged between the half mirror section 32 and the sensor section 2. For example, the light guide plate 10 is arranged between the half mirror unit 32 and the sensor unit 2 in the direction away from the half mirror unit 32. In this case, the sensor unit 2 detects an object approaching the first pattern 30a and the second pattern 30b via the half mirror unit 32 and the light guide plate 10.

  Specifically, the mirror unit 31, the half mirror unit 32, the light guide plate 10, and the sensor unit 2 are arranged in the order of the mirror unit 31, the half mirror unit 32, the light guide plate 10, and the sensor unit 2 in the direction away from the half mirror unit 32. , Arranged side by side. The infrared rays of the sensor unit 2 pass through the half mirror unit 32, the light guide plate 10, and the base material 31 a of the mirror unit 31 where the masking process is removed. As a result, the sensor unit 2 detects an object approaching the predetermined pattern 30.

  In the display device 102 having the above configuration, as in the first to third embodiments, the sensor unit 2 and the light guide plate 10 are arranged side by side along the half mirror unit 32 (FIG. 2, FIG. 9A, 9B), the region RG of the base material 31a of the mirror portion 31 where the masking process is removed can be made smaller. That is, the size of the half mirror portion 32 can be reduced. That is, the manufacturing cost of the display device 102 can be reduced.

<Fifth Embodiment>
The configuration of the fifth embodiment is substantially the same as the configuration of the fourth embodiment, except for the configurations of the reflecting section 3 and the light guide plate display 1. Therefore, in the fifth embodiment, only the configuration different from that of the fourth embodiment will be described. The configuration omitted here is based on the configuration of the fourth embodiment.

  As shown in FIG. 11, the half mirror unit 32 is configured separately from the mirror unit 31. The half mirror unit 32 is configured integrally with the light guide plate display 1. Specifically, the half mirror section 32 is configured integrally with the light guide plate 10. The half mirror portion 32 is formed integrally with the light guide plate 10 by forming the second reflecting material 32b on the light guide plate 10. For example, the half mirror unit 32 is configured integrally with the light guide plate 10 by depositing the second reflecting material 32b on the light guide plate 10. The vapor deposition of the second reflecting material 32b on the light guide plate 10 is realized by the vapor deposition method shown in the first embodiment.

  In the display device 102 having the above configuration, the light guide plate 10 functions not only as a member for displaying the first pattern 30a and the second pattern 30b but also as the base material 32a of the second reflecting material 32b. . Thereby, the manufacturing cost of the display device 102 can be reduced, and the thickness of the half mirror portion 32 can be appropriately reduced.

<Sixth Embodiment>
The configuration of the sixth embodiment is a configuration applicable to the configurations of the first to fifth embodiments, except for the characteristics of the reflecting section 3. In the sixth embodiment, only the configuration different from the configurations of the first to fifth embodiments will be described. The configurations omitted here are in accordance with the configurations of the third to fifth embodiments.

  As shown in FIG. 12, the half mirror section 32 has a sixth reflectance H5 at the visible light wavelength. The sixth reflectance H5 is an example of the first reflectance in the claims. In the present embodiment, an example in which the half mirror unit 32 is configured separately from the mirror unit 31 will be described, but the half mirror unit 32 may be configured integrally with the mirror unit 31.

  The sixth reflectance H5 is set such that the reflectance H51 of the half mirror portion 32 at the boundary between the mirror portion 31 and the half mirror portion 32 is smaller than the reflectance H52 at the central portion of the half mirror portion 32. For example, the sixth reflectance H5 is set so as to gradually decrease from the boundary between the mirror portion 31 and the half mirror portion 32 toward the central portion of the half mirror portion 32.

  The characteristic of the sixth reflectance H5 is set by adjusting the thickness of each layer of the second reflecting material 32b. For example, the sixth reflectance H5 may be curvedly or linearly changed from the boundary between the mirror portion 31 and the half mirror portion 32 toward the central portion of the half mirror portion 32. Further, the sixth reflectance H5 may be changed stepwise from the boundary between the mirror portion 31 and the half mirror portion 32 toward the central portion of the half mirror portion 32.

  In the display device 102 having the above configuration, at the boundary between the mirror section 31 and the half mirror section 32, as in the first to fifth embodiments, the first reflectance M1 of the mirror section 31 and the sixth reflectance of the half mirror section 32 are the same. The difference in reflectance H51 becomes small. For this reason, the boundary line between the mirror unit 31 and the half mirror unit 32 is less likely to be visually recognized by the user, and the target can be appropriately displayed on the reflecting unit 3.

  On the other hand, in the central portion of the half mirror portion 32, since the boundary line between the mirror portion 31 and the half mirror portion 32 does not occur, the first reflectance M1 of the mirror portion 31 and the sixth reflectance H52 of the half mirror portion 32. The difference between can be increased. That is, the first pattern 30a and the second pattern 30b can be preferably displayed without reducing the brightness of the first pattern 30a and the second pattern 30b.

<Other Embodiments>
Although one embodiment of the present invention has been described above, the present invention is not limited to the above embodiment, and various modifications can be made without departing from the gist of the invention.

  (A) In the above-described embodiment, the example in which the display device 102 is applied to the wash basin (device 100) has been described, but the display device 102 can be applied to various devices other than the wash basin. For example, the display device 102 may be applied to a dressing table. As described above, even when the display device 102 is applied to the makeup table, the display device 102 can obtain the same effect as the above-described effect.

  (B) In the above embodiment, an example in which the display device 102 is applied to a wash basin (apparatus 100) has been shown, but the display device 102 can be applied to various devices other than the wash basin. For example, the display device 102 may be applied to home appliances.

  For example, as shown in FIG. 13, when the display device 102 is applied to a device 200 such as a washing machine, the device 200 includes a housing 200a, a door portion 200b, and the display device 102 of the embodiment. In this case, the display device 102 functions as an operation panel, for example. The display device 102 may be applied to the operation panel of the device 200 such as an audio device. Even with such a configuration, it is possible to obtain the same effects as those described above.

  (C) The configuration of the display device 102 is not limited to the above embodiment, and may be changed to another configuration. For example, the shape of the prism in the light guide plate display 1 is not limited to the shape of the above embodiment, and may be another shape. Further, the arrangement of the plurality of light sources is not limited to the arrangement described above, and may be changed to another arrangement.

  (D) In the above embodiment, an example in which the light guide plate display 1 has the light guide plate 10 and the light source 11 has been shown, but the light guide plate display 1 collimates the light from the light source in a predetermined direction. It may further have a lens.

  (E) In the above embodiment, an example in which the first pattern 30a and / or the second pattern 30b is displayed in front of the half mirror unit 32 has been shown, but the first pattern 30a and / or the first pattern 30a may be displayed. The second pattern 30 b may be displayed on the surface of the half mirror unit 32. Further, the first pattern 30a and / or the second pattern 30b may be displayed between the surface of the half mirror portion 32 and the light guide plate 10 (prism 20).

  (F) In the above-described embodiment, an example in which the display device 102 has the light guide plate display 1 as an example of the display unit is shown. However, instead of the light guide plate display 1, an LCD display, an organic EL display, or the like may be used. It may be used. In this case, the first pattern 30a and / or the second pattern 30b is displayed on the surface of the LCD display and the organic EL display.

  (G) In the above-described embodiment, an example is shown in which the predetermined pattern 30 is imaged in space by integrating the point light by the light guide plate 10 at a predetermined position. The configuration of the light guide plate 10 for forming the image of the predetermined pattern 30 in space is not limited to the above-described embodiment, and any configuration may be used. For example, the light guide plate 10 may image the predetermined pattern 30 in space by collecting linear or planar light at a predetermined position.

  According to the present invention, in the display device 102 and the devices 100 and 200, the target can be preferably displayed on the reflecting section 3.

100, 200 Device 102 Display device 3 Reflector 1 Light guide plate display 2 Sensor 2
31 mirror part 32 half mirror parts 30, 30a, 30b predetermined pattern H1 third reflectance H4 fifth reflectance H5, H51, H52 sixth reflectance

Claims (16)

A reflecting portion having a mirror portion and a half mirror portion having a transmittance higher than that of the mirror portion;
A display unit, which is arranged side by side with the half mirror unit, and which has a light source and a light guide plate configured to display a predetermined pattern by reflecting light from the light source,
A sensor unit that detects an object approaching the predetermined pattern using light of an infrared wavelength,
Equipped with
The half mirror portion has a first reflectance in the range of 95% or less at a visible light wavelength,
Display device. The first reflectance is in the range of 75% or more and 95% or less at a visible light wavelength,
The display device according to claim 1. The half mirror portion further has a second reflectance in the range of 70% or less at the infrared wavelength.
The display device according to claim 1. The half mirror unit is configured integrally with the mirror unit,
The display device according to claim 1. The half mirror unit is configured separately from the mirror unit,
The display device according to claim 1. The half mirror unit is formed integrally with the light guide plate by depositing a reflective material on the light guide plate.
The display device according to claim 1. The light guide plate is disposed between the half mirror unit and the sensor unit,
The display device according to claim 1. The first reflectance has a reference reflectance at the visible light wavelength and an RGB reflectance that is smaller than the reference reflectance at an RGB wavelength within the visible light wavelength,
The display device according to claim 1. The first reflectance at the boundary between the half mirror portion and the mirror portion is smaller than the first reflectance at the central portion of the half mirror portion,
The display device according to claim 1. The light guide plate has a plurality of light guide portions,
The light from the light source reflected by the plurality of light guide portions converges at a plurality of fixed points corresponding to the plurality of light guide portions,
A predetermined pattern is imaged in space by a collection of lights converged at a plurality of fixed points,
The display device according to claim 1. A reflecting portion having a mirror portion and a half mirror portion having a transmittance higher than that of the mirror portion;
A display unit, which is arranged side by side with the half mirror unit, and which has a light source and a light guide plate configured to display a predetermined pattern by reflecting light from the light source,
A sensor unit that detects an object approaching the predetermined pattern using light of an infrared wavelength,
Equipped with
In the half mirror section, the first reflectance at the visible light wavelength is different from the second reflectance at the infrared wavelength,
Display device. The first reflectance is greater than the second reflectance,
The display device according to claim 11. A difference obtained by subtracting the second reflectance from the first reflectance is set to a range of 5% or more and less than 95%,
The display device according to claim 12. The display device according to any one of claims 1 to 13,
Equipment equipped with. The device is a washstand or vanity,
The device has a main body portion and a mirror surface portion attached to the main body portion and having the display device,
The device according to claim 14. The device is a home appliance,
The device includes a housing and the display device provided in the housing.
The device according to claim 14.

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