Display device

Abstract

A display device (1, 1a) is provided with: a transmission / reflection unit (11) that transmits a portion of incident light and reflects a portion of the incident light; a display panel (12) that displays an image; a sensor (16) provided with a base material (163) having a first surface (1631), a light-emitting element (161) positioned on the first surface (1631), and a light-receiving element (162) positioned on the first surface (1631) and receiving reflected light of light emitted by the light-emitting element (161); an operation unit (29); and a first control circuit (30) that performs control to switch the opening and closing of the display panel (12) on the basis of the amount of light received by the light-receiving element (162), and the operation unit (29) switches the position of the sensor (16) relative to the operation unit (29) between a first position and a second position different from the first position, and changes the amount of light received by the light-receiving element (161).

Description

Technical Field

[0001] The present disclosure relates to a display device. Background Art

[0002] In recent years, a display system and a display device related thereto have been known that use a camera device to capture an image of the rear of a vehicle instead of a conventional interior mirror and display the captured image. Patent document 1 discloses a display device that is mounted on a vehicle and includes: an actuator that switches the display device between a first position and a second position; and a sensor that detects the position of the actuator, and the display device switches between a mode of displaying image data of the rear of the vehicle and a mode of displaying a mirror image of the rear of the vehicle according to the position of the actuator detected by the sensor.

[0003] Prior art literature

[0004] Patent Literature

[0005] Patent Document 1: Japanese Patent Application No. 2018-527245 Summary of the invention

[0006] Problem that the invention aims to solve

[0007] The problem to be solved by the present invention is to realize miniaturization of a display device.

[0008] Solutions for solving problems

[0009] The display device disclosed in the present invention comprises: a transmission and reflection portion that transmits a portion of incident light and reflects a portion of the incident light; a display panel that displays an image; a sensor that comprises a substrate, a light-emitting element, and a light-receiving element, wherein the substrate has a first surface, the light-emitting element is located on the first surface, and the light-receiving element is located on the first surface and receives reflected light of light emitted by the light-emitting element; an operating portion; and a first control circuit that controls switching the display panel on and off based on the amount of light received by the light-receiving element, wherein the operating portion switches the relative position of the sensor relative to the operating portion between a first position and a second position different from the first position, thereby changing the amount of light received by the light-receiving element.

[0010] Effects of the Invention

[0011] According to the present invention, it is possible to reduce the size of a display device. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a diagram schematically showing a display system according to the first embodiment.

[0013] Figure 2 It is a perspective view showing the structure of the display device according to the first embodiment.

[0014] Figure 3 It is a front view showing the structure of the display device according to the first embodiment.

[0015] Figure 4 This is a cross-sectional view of the display device taken along the line AA when the display device according to the first embodiment is in the first posture.

[0016] Figure 5 This is a cross-sectional view of the display device taken along the line AA when the display device according to the first embodiment is in the second posture.

[0017] Figure 6 This is a front view schematically showing the structure of the sensor according to the first embodiment.

[0018] Figure 7 It is a perspective view showing the positional relationship between the sensor and the protrusion when the display device according to the first embodiment is in the first posture.

[0019] Figure 8 This is a cross-sectional view of the display device taken along the line BB of the display device according to the first embodiment when the display device is in the first posture.

[0020] Fig. 9 This is a cross-sectional view of the display device taken along the line BB when the display device according to the first embodiment is in the second posture.

[0021] Fig.10 This is a cross-sectional view of the display device taken along the line AA when the display device according to the second embodiment is in the first posture.

[0022] Fig.11 This is a cross-sectional view of the display device taken along the line AA when the display device according to the second embodiment is in the second posture. DETAILED DESCRIPTION

[0023] The display device disclosed in the present invention is constructed as follows. Hereinafter, the same or equivalent components, members or processes shown in each figure are marked with the same reference numerals, and repeated descriptions are appropriately omitted. In addition, for easy understanding, the size of each member in each figure is appropriately enlarged or reduced.

[0024] (First embodiment)

[0025] Figure 1 An example of a schematic configuration of a display system 1000 according to a first embodiment of the present disclosure is shown. In this embodiment, the display system 1000 is mounted on a vehicle 2000. The display system 1000 includes an imaging device 3000 and a display device 1.

[0026] Here, Figure 1The right side of corresponds to the front side of the vehicle 2000. That is, when the vehicle 2000 moves forward, the vehicle 2000 faces Figure 1 The vehicle 2000 includes a front windshield 4000 and a seat 5000.

[0027] like Figure 1 As shown in FIG. 1 , an orthogonal coordinate system consisting of an x-axis, a y-axis, and a z-axis is defined.

[0028] The x-axis extends along the front windshield 4000. That is, the x-axis has the same inclination angle as the inclination angle of the front windshield 4000. The positive direction of the x-axis is a direction that rises along the front windshield 4000 toward the rear of the vehicle 2000. The negative direction of the x-axis is a direction that falls along the front windshield 4000 toward the front of the vehicle 2000.

[0029] The y-axis is orthogonal to the x-axis. In addition, the y-axis extends in the left-right direction of the vehicle 2000. Therefore, the xy plane coincides with the surface of the front windshield 4000. The positive direction of the y-axis is the direction toward the right side of the vehicle 2000 when the vehicle 2000 is moving forward. The negative direction of the y-axis is the direction toward the left side of the vehicle 2000 when the vehicle 2000 is moving forward.

[0030] The z-axis is perpendicular to the x-axis and the y-axis. That is, the z-axis extends in the direction of the normal line of the surface of the front windshield 4000. The positive direction of the z-axis is the direction in which the normal line of the surface of the front windshield 4000 extends toward the front of the vehicle 2000. The negative direction of the z-axis is the direction in which the normal line of the surface of the front windshield 4000 extends toward the rear of the vehicle 2000.

[0031] In other words, the negative direction of each of the x-axis, y-axis, and z-axis is defined as a direction opposite to the positive direction of each. Figure 1 Indicated by arrows respectively.

[0032] Hereinafter, the positive direction of the x-axis may be referred to as "rear" or "rear side", the negative direction of the x-axis may be referred to as "front" or "front side", the positive direction of the y-axis may be referred to as "right" or "right side", the negative direction of the y-axis may be referred to as "left" or "left side", the positive direction of the z-axis may be referred to as "upper" or "upper side", and the negative direction of the z-axis may be referred to as "lower" or "lower side". Here, the rear and front of the x-axis are different from the rear and front of the vehicle 2000, and the upper and lower parts of the z-axis are different from the upper and lower parts of the vehicle 2000, but they may be used without being clearly distinguished.

[0033] In addition, in this specification, expressions such as parallel or center are sometimes used to indicate the posture or position of one or more objects, but these expressions also include situations that are not strictly speaking the posture or position. For example, parallel means not only completely parallel, but also substantially parallel, that is, including a difference of about several percent, for example. The same applies to expressions such as perpendicular that indicate the relationship between two or more information or objects.

[0034] The camera device 3000 captures the rear of the vehicle 2000. The camera device 3000 is mounted on the rear portion of the vehicle 2000. The camera device 3000 outputs the captured image to the display device 1. The vehicle 2000 is provided with an ECU (Electronic Control Unit) not shown in the figure, and the camera device 3000 may also be connected to the display device 1 via the ECU. In other words, the camera device 3000 may also be connected to the display device 1 via a network. In the connection via the network, any one of wireless communication, wired communication, and a combination thereof is used. The camera device 3000 may also be directly connected to the display device 1. The following describes an example in which the vehicle 2000 is provided with an ECU.

[0035] The display device 1 receives an input of an image from the camera device 3000, and displays the image received from the camera device 3000. The display device 1 is installed at a position inside the vehicle 2000 where the passenger 6000 can visually recognize the image. The passenger 6000 is seated in the seat 5000. The display device 1 may also be provided on the front windshield 4000. For example, the display device 1 may also be provided at a position near the center in the left-right direction of the front windshield 4000 and near the upper end in the up-down direction of the front windshield 4000. When the seat 5000 is a driver's seat, the passenger 6000 is equivalent to the driver.

[0036] use Figure 2 to Figure 7 The display device 1 according to the first embodiment will be described in detail. Figure 2 It is a perspective view of the display device 1 . Figure 3 It is a front view showing the structure of the display device 1. Figure 4 is along Figure 3 The cross-sectional view of the display device 1 in the first posture is taken along the cutting line AA. Figure 5 is along Figure 3 The cross-sectional view of the display device 1 in the second posture is taken along the cutting line AA. Figure 6 It is a front view schematically showing the structure of the sensor 16 . Figure 7 2 is a perspective view showing the position and size of the sensor 16 and the protrusion 222 when the display device 1 is in the first posture. Figure 4 and Figure 5In order to simplify the description, various wirings and the like arranged inside the display device 1 are omitted from the illustration. When the display device 1 of the present disclosure is installed, various wirings and the like can be appropriately arranged inside the display device 1 .

[0037] The display device 1 is a device that switches between a state of displaying an image and a state of displaying a mirror image as a reflected image by a user's operation. The user is, for example, a passenger 6000. The display device 1 of the first embodiment includes a transmissive reflector 11, a display panel 12, a first control circuit 30 that controls the display panel 12, a sensor 16, and an operating unit 29. The display device 1 may also include a first substrate 13, a second substrate 14, and a panel operating unit 18. The display device 1 may also include a housing 10 that supports the display panel 12, the transmissive reflector 11, the first substrate 13, the second substrate 14, and the panel operating unit 18.

[0038] The display device 1 is fixed to the vehicle 2000 by, for example, a fixing member 20, an arm 21, a plate 22, and a base (not shown). The display device 1 may also include a fixing member 20, an arm 21, a plate 22, and a base. In the present embodiment, the operating unit 29 includes a rod 17 and a plate 22. The display device 1 may also include a first illuminance sensor 27 and a second illuminance sensor 28. Alternatively, the display system 1000 may include the first illuminance sensor 27 and the second illuminance sensor 28. The first illuminance sensor 27 and the second illuminance sensor 28 may not be arranged on the display device 1.

[0039] The base is fixed to the vehicle 2000 to hold the fixing part 20. The base has a plate shape and is formed of a hard material. The hard material is, for example, metal. The base may also be in a shape that is longer in the front-to-back direction than in the left-to-right direction. The base has an upper surface facing upward and a lower surface facing downward. The upper surface of the base is fixed to the vehicle 2000. The upper surface of the base is fixed to the front windshield 4000, for example, by an adhesive. As long as the display device 1 can be fixed in the same position as a conventional interior mirror, other methods may be used to fix the base. With respect to the fixing strength when the base is fixed to the vehicle 2000, it is ensured that when the vehicle 2000 brakes suddenly or collides, and the display device 1 is subjected to external force caused by the impact, the base will not fall off the vehicle 2000.

[0040] The display device 1 is fixed to the vehicle 2000 by installing the fixing member 20 on the base. The fixing member 20 has, for example, a shape that can be slidably assembled to the base. The fixing member 20 is formed of a rigid body. Here, a rigid body refers to an object that does not deform when slidably assembled to the base. The fixing member 20 is formed of, for example, an alloy of aluminum, magnesium, zinc, etc. The fixing member 20 can also be formed of glass with a filler added or a resin with a filler added. In this case, the filler can be glass or carbon fiber.

[0041] The arm 21 connects the fixing member 20 and the plate 22. The arm 21 is connected to the lower part of the fixing member 20 and the plate 22. The arm 21 has a shape that extends while being bent downward and backward. The plate 22 is connected to the back of the housing 10. The plate 22 supports the housing 10. The arm 21 and the plate 22 are formed of metal. The arm 21 and the plate 22 may be formed of resin, for example. Alternatively, the fixing member 20 and the arm 21, the arm 21 and the plate 22, or the fixing member 20, the arm 21, and the plate 22 may be formed integrally. In this case, since the arm 21 is formed of the same material as the fixing member 20, the arm 21 may be a rigid body like the fixing member 20. For the connection between the fixing member 20 and the arm 21, the connection between the arm 21 and the plate 22, and the structure of the arm 21, known techniques may be used, and therefore, description thereof will be omitted.

[0042] The housing 10 supports the transmissive reflector 11, the display panel 12, the first substrate 13, and the second substrate 14. The housing 10 has an internal structure 24. The internal structure 24 has a gap 25. The housing 10 may have, for example, a box-shaped shape, and the transmissive reflector 11, the display panel 12, the first substrate 13, and the second substrate 14 may be arranged inside the housing 10. The housing 10 may also be a box-shaped shape that is long in the left-right direction. The housing 10 is supported by a plate 22. The housing 10 has an opening 26 on the front side of the display device 1. The display panel 12 can be visually recognized from the opening 26 of the housing 10 on the front side of the display device 1. The transmissive reflector 11 is arranged on the front surface of the housing 10. The transmissive reflector 11 may be arranged in a manner to protect the display panel 12. In other words, the transmissive reflector 11 may be arranged in a manner to cover the front surface of the display panel 12 when viewed from the normal direction of the display surface 121 of the display panel 12.

[0043] In the present embodiment, the posture of the housing 10 when the display device 1 is in the first posture is sometimes referred to as the first posture. In addition, the posture of the housing 10 when the display device 1 is in the second posture is sometimes referred to as the second posture. The first posture is the posture of the display device 1 when the passenger 6000 confirms the rear of the vehicle through the image displayed on the display panel 12. The second posture is the posture of the display device 1 when the passenger 6000 confirms the rear of the vehicle 2000 through the mirror image reflected by the transmissive reflective portion 11.

[0044] In addition to this, the position of the housing 10 when the display device 1 is in the first posture is sometimes referred to as the third position. Also, the position of the housing 10 when the display device 1 is in the second posture is sometimes referred to as the fourth position. The occupant 6000 can switch the relative position of the sensor 16 with respect to the operating portion 29 between the first position and a second position different from the first position by operating the operating portion 29. The first position is the relative position of the sensor 16 with respect to the operating portion 29 when the display device 1 is in the first posture. Furthermore, the second position is the relative position of the sensor 16 with respect to the operating portion 29 when the display device 1 is in the second posture. By making the relative position of the sensor 16 with respect to the operating portion 29 different, it is easy to make the amount of light received by the light receiving element 162 described later significantly different.

[0045] In the present embodiment, the passenger 6000 can switch the relative position of the housing 10 with respect to the plate 22 described later by operating the lever 17. More specifically, the passenger 6000 can switch the relative position of the sensor 16 with respect to the protruding portion 222 described later between the first position and the second position different from the first position by operating the lever 17. For example, the position of the housing 10 can be switched between the first position and the second position by switching the position of the lever 17.

[0046] exist Figure 4 and Figure 5 , an example of switching the posture of the housing 10 using the lever 17 is shown, but the posture of the housing 10 may not be switched. For example, the lever 17 may be configured so that the position of the plate 22 is switched by operating the lever 17 without switching the posture of the housing 10. In this configuration, the relative position of the sensor 16 with respect to the protrusion 222 can also be switched. In addition, as a component for switching the relative position of the sensor 16 with respect to the operating portion 29, the operating portion 29 may also include a button instead of the lever 17.

[0047] The transmissive reflector 11 transmits a portion of incident light incident from the front side of the display device 1 and reflects a portion of the incident light. The transmissive reflector 11 has a surface 111. The transmissive reflector 11 includes a transparent plate that transmits incident light and a polarized reflective layer located on the back side of the transparent plate. The transparent plate is formed of glass. The transparent plate may also be formed of resin. By forming the transparent plate from resin, the transparent plate is lighter than when formed from glass.

[0048] The polarizing reflection layer is attached to the transparent plate via an adhesive layer. The transmittance of visible light of the adhesive layer is 80% or more. The polarizing reflection layer transmits the first deflected light deflected in the first deflection direction among the light incident through the transparent plate. That is, the polarizing reflection layer has a polarization transmission axis in the first deflection direction. In addition, the polarizing reflection layer reflects the second deflected light deflected in the second deflection direction different from the first deflection direction. That is, the polarizing reflection layer has a polarization reflection axis in the second deflection direction. In addition, the polarizing reflection layer transmits the first deflected light deflected in the first deflection direction among the light of the image displayed by the display panel 12.

[0049] In addition, in the present embodiment, the first deflection direction and the second deflection direction are orthogonal. As the deflection direction approaches the first deflection direction, the transmittance of the light of the polarized reflection layer becomes higher, and as the deflection direction moves away from the first deflection direction, the transmittance of the light of the polarized reflection layer becomes lower. Similarly, as the deflection direction approaches the second deflection direction, the reflectance of the light of the polarized reflection layer becomes higher, and as the deflection direction moves away from the second deflection direction, the reflectance of the light of the polarized reflection layer becomes lower. The polarized reflection layer is, for example, a polarized reflection film.

[0050] In addition, the transmissive reflective portion 11 may include a reflectivity control portion between the transparent plate and the polarized reflective layer. In the reflectivity control portion, the polarized absorption element, the first electrode, the control substance, and the second electrode are overlapped in sequence along the direction from the transmissive reflective portion 11 toward the display panel 12. The reflectivity control portion may include a first support plate supporting the first electrode and a second support plate supporting the second electrode. The first support plate is located between the polarized absorption element and the first electrode, and the second support plate is located between the second electrode and the polarized reflective element. The first electrode and the second electrode may be connected to a power source not shown in the figure. In the case where the first electrode and the second electrode have sufficient rigidity, the reflectivity control portion may not include the first support plate and the second support plate.

[0051] The polarization absorption element transmits the first deflected light deflected in the first deflection direction, and absorbs the second deflected light deflected in the second deflection direction different from the first deflection direction. In the present embodiment, the first deflection direction and the second deflection direction are orthogonal. As the deflection direction approaches the first deflection direction, the transmittance of light of the polarization absorption element becomes higher, and as the polarization direction moves away from the first deflection direction, the transmittance of light of the polarization absorption element becomes lower. Similarly, as the deflection direction approaches the second deflection direction, the absorptivity of light of the polarization absorption element becomes higher, and as the polarization direction moves away from the second deflection direction, the absorptivity of light of the polarization absorption element becomes lower. Alternatively, the first deflection direction and the second deflection direction may not be orthogonal. In the polarization absorption element, when the first deflection direction and the second deflection direction are not orthogonal, a polarization reflection layer in which the first deflection direction and the second deflection direction are not orthogonal may be used for the polarization reflection layer. The polarization absorption element is, for example, a polarization absorption film.

[0052] The first electrode is a transparent electrode. The first electrode is, for example, an ITO (Indium Tin Oxide) electrode. Alternatively, the first electrode is supported by a first support plate. The first support plate is formed of a transparent material. The first support plate is, for example, a glass plate. Alternatively, the first electrode is supported by the first support plate, for example, by forming the first electrode on the first support plate by vapor deposition.

[0053] The second electrode is a transparent electrode. The second electrode is, for example, an ITO electrode. Alternatively, the second electrode is supported by a second support plate. The second support plate is formed of a transparent material. The second support plate is, for example, a glass plate. Alternatively, the second electrode is supported by the second support plate, for example, by forming the second electrode on the second support plate by vapor deposition.

[0054] The control substance is located between the first electrode and the second electrode. The state of the control substance changes according to the potential difference between the first electrode and the second electrode, thereby changing the reflectivity of the transmissive reflective portion 11. Specifically, by changing the voltage applied between the first electrode and the second electrode, the state of the control substance changes, thereby changing the reflectivity of the transmissive reflective portion 11. Thus, for example, the reflectivity of the transmissive reflective portion 11 can be changed according to the surrounding environment of the vehicle 2000. The control substance is, for example, a liquid crystal molecule. The control substance can also be, for example, an electrochromic material. In the case where the control substance is an electrochromic material, the reflectivity control portion may not include a polarization absorption element and a polarization reflection element described later.

[0055] The display panel 12 displays an image. In more detail, the display panel 12 displays an image captured by the camera device 3000. The display panel 12 is located on the back side of the transmissive reflective portion 11. The display panel 12 has a display surface 121 and a fifth surface 122 opposite to the display surface 121. The display surface 121 and the fifth surface 122 are parallel. In addition, the surface 111 and the display surface 121 are parallel. The display panel 12 can be switched on and off. In other words, the display panel 12 can be switched between an on state in which an image is displayed and a off state in which an image is not displayed. The display panel 12 is, for example, a liquid crystal display or an organic EL (Electro-Luminescence) display. In addition, the display panel 12 is not limited to displaying images captured by the camera device 3000, but can also display images captured by other camera devices. Other camera devices are camera devices that are different from the camera device 3000 and are connected to the display device 1 by wire or wirelessly.

[0056] The first illuminance sensor 27 detects the illuminance in front of the vehicle 2000. The second illuminance sensor 28 detects the illuminance in the rear of the vehicle 2000. In the present embodiment, the first illuminance sensor 27 is arranged on the back surface of the housing 10. In addition, in the present embodiment, the second illuminance sensor 28 is arranged on the front surface of the housing 10. Alternatively, the first control circuit 30 changes the brightness of the image displayed on the display panel 12 according to the brightness in front of and behind the vehicle 2000 detected by the first illuminance sensor 27 and the second illuminance sensor 28. Alternatively, the reflectivity of the reflectivity control unit may be changed according to the brightness in front of and behind the vehicle 2000 detected by the first illuminance sensor 27 and the second illuminance sensor 28.

[0057] The first illuminance sensor 27 and the second illuminance sensor 28 are, for example, silicon photoelectric sensors. Alternatively, the second illuminance sensor 28 may be mounted at the rear of the vehicle 2000 so as to detect the intensity of light irradiated from the rear of the vehicle 2000 to the vehicle 2000. Alternatively, the imaging device 3000 may function as the second illuminance sensor 28.

[0058] The first substrate 13 is located on the rear side of the display panel 12. The first substrate 13 has a third surface 131 and a fourth surface 132. The third surface 131 and the fourth surface 132 are parallel to each other. In addition, the fifth surface 122 and the third surface 131 are opposite to each other and are parallel to each other.

[0059] The second substrate 14 is located on the rear side of the display panel 12. The second substrate 14 has a sixth surface 141 perpendicular to the fifth surface 122 and a seventh surface 142 facing the sixth surface 141. In the present embodiment, the sixth surface 141 faces upward.

[0060] Alternatively, a panel operation portion 18 for operating the display panel 12 may be provided below the second substrate 14. For example, the second substrate 14 includes a pressed portion 31 and a second control circuit 32. The panel operation portion 18 supports the second substrate 14. Alternatively, the pressed portion 31 and the second control circuit 32 are electrically connected. Alternatively, the second control circuit 32 receives a signal from the pressed portion 31 and sends the signal to the first control circuit 30. The panel operation portion 18 may include, for example, a convex portion (not shown). When a user presses the panel operation portion 18, the convex portion presses the pressed portion 31. When pressed, the pressed portion 31 outputs a signal to the second control circuit 32. The second control circuit 32 sends the signal output from the pressed portion 31 to the first control circuit 30. When the first control circuit 30 detects the signal sent from the second control circuit 32, the first control circuit 30 changes the display content of the display panel 12. Thus, the user can operate the menu screen of the display panel 12, for example, by operating the panel operation unit 18. The panel operation unit 18 has a button shape. As long as the display panel 12 can be operated by operating the panel operation unit 18, the panel operation unit 18 is not limited to a button shape. In the present embodiment, the panel operation unit 18 is four buttons. The number of buttons is not limited to four. For example, the number of buttons may be less than four. In addition, the number of buttons may be five or more. In addition, the second substrate 14 may also have an LED 19. For example, the first control circuit 30 controls the LED 19. The LED 19 illuminates the panel operation unit 18. Thus, even when the interior of the vehicle is dark, it is easy for the user to operate the panel operation unit 18.

[0061] The first substrate 13 and the second substrate 14 are connected by a FFC (Flexible Flat Cable) 15. The FFC 15 may be provided at any position on the first substrate 13 and the second substrate 14. The first substrate 13 and the second substrate 14 may be connected by, for example, a BtoB connector.

[0062] The sensor 16 includes a light emitting element 161, a light receiving element 162, and a substrate 163. The sensor 16 is located on the sixth surface 141. By providing the sensor 16 on the second substrate 14 including the LED 19 and the second control circuit 32, the display device 1 does not need to include an additional substrate for providing the sensor 16. Therefore, the display device 1 can be miniaturized. The substrate 163 supports the light emitting element 161 and the light receiving element 162. The substrate 163 has a first surface 1631. The light emitting element 161 and the light receiving element 162 are located on the first surface 1631. That is, the light emitting element 161 and the light receiving element 162 are located on the same surface. The light emitting element 161 emits light upward. When there is a detection object at a position where the light emitted by the light emitting element 161 is blocked, that is, above the light emitting element 161, the light emitted by the light emitting element 161 is reflected by the detection object. The light receiving element 162 receives the reflected light of the light emitted by the light emitting element 161, that is, the light reflected by the detection object. In this embodiment, the detection object is the protrusion 222 described later. The sensor 16 changes the output signal according to the change of the light received by the light receiving element 162. In this embodiment, the light receiving element 162 is a phototransistor. The light receiving element 162 generates a current of a size corresponding to the amount of light received. For example, the greater the amount of light received by the light receiving element 162, the greater the current generated. Figure 6 In the example shown, the first surface 1631 is the outermost surface of the substrate 163, but the first surface 1631 may be provided at a position inside the outermost surface of the substrate 163. For example, the substrate 163 may have a first recessed portion and a second recessed portion recessed downward from the outermost surface. The first recessed portion and the second recessed portion may each have a flat bottom surface that is equidistant from the outermost surface of the substrate 163. In this example, the cross section of the substrate 163 including the bottom surface of the first recessed portion and the bottom surface of the second recessed portion is the first surface 1631. For example, the light emitting element 161 may be located at the bottom surface of the first recessed portion, and the light receiving element 162 may be located at the bottom surface of the second recessed portion.

[0063] Sometimes, a sensor having a light-emitting element, a light-receiving element, and a substrate, such as the sensor 16, and having a structure in which the light-emitting element and the light-receiving element are located on the same surface is called a reflection sensor. As an example of a light sensor other than a reflection sensor, there is a photointerrupter. The photointerrupter includes a substrate having a valley shape, a light-emitting element located on a surface of the substrate, and a light-receiving element located on a surface of the substrate. The light-emitting element and the light-receiving element are located at positions opposite to each other across the valley of the substrate.

[0064] When there is a detection object in the space between the light emitting element and the light receiving element, the light receiving element cannot receive light because the detection object blocks the light from the light emitting element. On the other hand, when there is no detection object in the space between the light emitting element and the light receiving element, the light emitted by the light emitting element is not blocked but incident on the light receiving element. Thus, the photointerrupter can detect the presence or absence of the detection object by whether the light receiving element receives light.

[0065] However, compared with a reflective sensor that does not require a valley, the size of the photointerrupter tends to be larger because the base material of the photointerrupter needs to have a valley between the light emitting element and the light receiving element with a depth and width that allows the detection target to enter.

[0066] Therefore, by adopting the reflection sensor, the housing 10 can be made smaller in size compared with the case of adopting a photointerrupter, for example.

[0067] The light emitting element 161 and the light receiving element 162 are arranged along the long side direction of the first surface 1631. In other words, the light emitting element 161 and the light receiving element 162 are arranged in the left-right direction. The light emitting element 161 and the light receiving element 162 may be arranged along the short side direction of the first surface 1631. In other words, the light emitting element 161 and the light receiving element 162 may be arranged in the front-back direction. The closer the sensor 16 is arranged to the back side, the shorter the protrusion 222 extending from the back side toward the front side described later can be.

[0068] In addition, if Figure 4 As shown, when the housing 10 is in the first posture, if the light emitting element 161 and the second surface 2221 overlap at least partially when viewed from the normal direction of the first surface 1631 , the sensor 16 can be provided at any position on the sixth surface 141 .

[0069] The first substrate 13 includes a first control circuit 30 for controlling the display panel 12. The first control circuit 30 monitors a voltage corresponding to a current outputted by the light receiving element 162 at regular intervals, and when the voltage is detected to be above a threshold value, the display panel 12 is placed in a state where no image is displayed. The state where the display panel 12 does not display an image is, for example, a state where the display panel 12 is closed. In addition, when the first control circuit 30 detects that the voltage is below a threshold value, the display panel 12 is placed in a state where an image is displayed. The state where the display panel 12 displays an image is, for example, a state where the display panel 12 is opened. Alternatively, the first control circuit 30 controls the display panel 12 based on a signal other than a voltage. In addition, the first control circuit 30 changes the display content of the display panel 12, for example, according to an operation on the panel operation unit 18.

[0070] The plate 22 supports the housing 10. The plate 22 is located on the back side of the first substrate 13. The plate 22 has a protrusion 221 and a protrusion 222. The protrusion 221 has a recess 2211. The protrusion 221 extends from the front side of the housing 10 toward the back side through the gap 25. The recess 2211 holds the screw 23 at the end. The screw 23 has a locking portion 231. The screw 23 and the locking portion 231 are separate components. In addition, the screw 23 and the locking portion 231 may be formed integrally. The locking portion 231 is located on the back side relative to the gap 25.

[0071] The protrusion 222 extends in a direction from the display panel 12 toward the transmissive reflector 11. The protrusion 222 has a second surface 2221 that is opposite to the first surface 1631. The second surface 2221 is a surface that is opposite to the first surface 1631 when the relative position of the sensor 16 to the operating portion 29 is the first position. Figure 4 As shown, when the housing 10 is in the first posture, the first surface 1631 and the second surface 2221 are opposite and parallel. When the display device 1 is in the first posture, the second surface 2221 reflects the light emitted by the light emitting element 161. When the housing 10 is in the first posture and the second posture, the amount of light emitted by the light emitting element 161 reflected by the second surface 2221 is different.

[0072] The protrusion 222 is provided at the lower end and the left side of the plate 22. Alternatively, the protrusion 222 may be provided at any position in the left-right direction of the plate 22. For example, the protrusion 222 may be provided at the lower end and the right side of the plate 22. In addition, as long as the second surface 2221 can reflect the light emitted by the light emitting element 161, the protrusion 222 may not be provided at the lower end of the plate 22.

[0073] The plate 22 and the protrusion 222 are integrally formed of metal. In addition, the plate 22 and the protrusion 222 may be formed of different materials. The protrusion 222 may be formed of a reflective material. By appropriately selecting the type and manufacturing method of the reflective material, the second surface 2221 having a desired reflectivity value can be obtained. The reflective material is, for example, resin.

[0074] Alternatively, the plate 22 formed of metal and the protrusion 222 formed of resin may be bonded together. In this case, the resin forming the protrusion 222 is, for example, ABS (Acrylonitrie Butaidene Styrene) resin, PP (Polypropylene) resin, or PMMA (Polymethyl Methacrylate) resin.

[0075] When the plate 22 and the protrusion 222 are integrally formed of metal, the reflectivity of light on the second surface 2221 may differ between display devices when the plate 22 is manufactured. Therefore, there is a case where a display device in which the reflectivity of light on the second surface 2221 does not have a desired value is manufactured. On the other hand, by forming the protrusion 222 separately from the plate 22, it is easy to set the reflectivity of the second surface 2221 to a desired value.

[0076] In addition, a reflective sheet made of resin may be attached to the surface of the protrusion 222 opposite to the first surface 1631, and the reflective surface of the reflective sheet may be the second surface 2221. In this case, the resin used for the reflective sheet is, for example, PEs (Polyester) resin or PET (Polyethylene Terephthalate) resin. By attaching the reflective sheet to the surface opposite to the first surface 1631, it is easy to set the reflectivity of light on the second surface 2221 to a desired value. By appropriately selecting the type and manufacturing method of the resin used as the material for the reflective sheet, the reflectivity can be set to a desired value. By setting the reflectivity of the second surface 2221 to a desired value, the first control circuit 30 can more accurately determine whether the display panel 12 is on or off.

[0077] In the present embodiment, since the operation portion 29 includes the lever 17 and the plate 22, the protrusion 222 having the second surface 2221 can be provided on the plate 22. This improves the degree of freedom in design, and thus, for example, the second surface 2221 can be provided at a position closer to the sensor 16. Therefore, by making the relative position of the sensor 16 with respect to the operation portion 29 different, it is easy to make the amount of light received by the light receiving element 162 significantly different.

[0078] In addition, in the present embodiment, the posture of the housing 10 is switched by the rod 17, but when the posture of the housing 10 is not switched, the display device 1 may not include the plate 22. For example, the rod 17 may reflect the light emitted by the light-emitting element 161. For example, the rod 17 may have a protrusion extending in the direction from the display panel 12 toward the transmissive reflective portion 11. In this case, in the display device 1, the relative position between the protrusion of the rod 17 and the sensor 16 may be switched by operating the rod 17. Thus, the display device 1 can be switched on and off with a simple structure. Therefore, the display device 1 can be made lighter. In addition, similar to forming the plate 22 and the protrusion 222 from different materials, the rod 17 and the protrusion may be formed from different materials. The protrusion may also be formed from a reflective material. In addition, a reflective sheet made of resin may be attached to the surface of the protrusion opposite to the first surface 1631.

[0079] In the present embodiment, the second substrate 14 is located below the first substrate 13 , but if the second substrate is located further above, the sensor 16 can be provided on the seventh surface 142 . For example, the protrusion 222 is located below the second substrate 14 .

[0080] When using the display device 1, the occupant 6000 can switch between the following states: displaying an image obtained by shooting the rear of the vehicle 2000 on the display panel 12 so as to confirm the state of the rear of the vehicle 2000 by observing the image, and reflecting the rear of the vehicle 2000 on the transmission and reflection part 11 so as to confirm the state of the rear of the vehicle 2000 by observing the mirror image.

[0081] When the occupant 6000 uses the image displayed on the display panel 12 to check the rear of the vehicle 2000, the image displayed on the display panel 12 is visually recognized by the occupant 6000 through the transmissive reflective portion 11. In addition, when the occupant 6000 uses the transmissive reflective portion 11 to check the rear of the vehicle 2000, the display panel 12 is in any state of not displaying an image or displaying a black image on the entire surface. When the display panel 12 does not display an image or displays a black image on the entire surface, it is difficult for the occupant 6000 to visually recognize the display panel 12 through the transmissive reflective portion 11.

[0082] use Figure 4 , Figure 5 , Figure 8 as well as Fig. 9 , the switching of the posture of the shell 10 and each posture are explained in detail. Figure 8 is along Figure 3 The section line BB shown is a cross-sectional view of the display device 1 in the first posture. Fig. 9 is along Figure 3 The section line BB shown is a cross-sectional view of the display device 1 in the second posture.

[0083] As described above, the first posture is the posture of the display device 1 when the occupant 6000 uses the image displayed on the display panel 12 to confirm the rear of the vehicle, and the second posture is the posture of the display device 1 when the occupant 6000 uses the mirror image reflected by the transmissive reflective portion 11 to confirm the rear of the vehicle 2000. Figure 4 , Figure 5 , Figure 7 as well as Figure 8As shown, the posture of the display device 1 is changed by switching the position of the lever 17, and the relative position of the sensor 16 with respect to the protrusion 222 is switched. Specifically, when the lever 17 is operated in a manner toward the front of the display device 1, that is, toward the occupant 6000, the display device 1 is switched to the first posture. On the other hand, when the lever 17 is operated in a manner toward the rear of the display device 1, that is, away from the occupant 6000, the display device 1 is switched to the second posture.

[0084] When switching from the second posture to the first posture, the housing 10 moves to a position where the internal structure 24 contacts the locking portion 231. In addition, when switching from the first posture to the second posture, the housing 10 moves to a position where the housing 10 contacts the lower end of the plate 22. In the second posture, the position where the plate 22 contacts the housing 10 may not be the lower end of the plate 22. It may be, for example, Figure 5 As shown, a plurality of regions on the plate 22 are in contact with the housing 10. Alternatively, only one arbitrary portion on the plate 22 may be in contact with the housing 10.

[0085] When comparing the first posture and the second posture, the normal direction of the surface 111 is directed upward in the second posture compared to the first posture. When the housing 10 is in the second posture, the top of the vehicle compartment is reflected on the transmissive reflective portion 11 when viewed from the perspective of the occupant 6000. Therefore, the reflected light reflected by the transmissive reflective portion 11 is difficult to be directed toward the occupant 6000. When the occupant 6000 uses the image displayed on the display panel 12 to confirm the rear of the vehicle, by placing the housing 10 in the second posture, it is possible to avoid bright interference light irradiated from the rear of the vehicle 2000 from entering the eyes of the occupant 6000. The interference light irradiated from the rear of the vehicle 2000 is, for example, the light of the headlights of the following vehicle. Thus, the visual recognition of the image displayed on the display panel 12 can be improved. In addition, it is also possible that the first control circuit 30 displays an image on the display surface 121 only when the housing 10 is in the first posture. Thus, the occupant 6000 can easily visually recognize the display image when the display device 1 is in the first posture, and can easily visually recognize the mirror image when the display device 1 is in the second posture.

[0086] like Figure 8 and Fig. 9 As shown, when lever 17 is operated to switch the posture of housing 10, the positions of base, arm 21, and plate 22 do not change, but the postures of housing 10 and members supported by housing 10 change. As a result, the positional relationship between sensor 16 and protrusion 222 changes.

[0087] Specifically, when the housing 10 is in the first posture, the first surface 1631 and the second surface 2221 overlap when viewed from the normal direction of the first surface 1631. Thus, when the housing 10 is in the first posture, the light emitted by the light emitting element 161 is reflected by the second surface 2221. On the other hand, when the housing 10 is in the second posture, the first surface 1631 and the second surface 2221 do not overlap when viewed from the normal direction of the first surface 1631. Thus, when the housing 10 is in the second posture, the light emitted by the light emitting element 161 is not reflected by the second surface 2221. That is, by changing the overlapping area between the operation portion 29 and the sensor 16, the amount of light received by the light receiving element 162 can be changed. Thus, when the housing 10 is in the second posture, the amount of reflected light, which is light emitted by the light emitting element 161 and reflected by the second surface 2221, received by the light receiving element 162 is smaller than when the housing 10 is in the first posture. Therefore, when the housing 10 is in the second posture, the current generated by the light receiving element 162 is smaller than when the housing 10 is in the first posture.

[0088] If the amount of light received by the light receiving element 162 changes between when the housing 10 is in the first posture and when it is in the second posture, the first surface 1631 and the second surface 2221 may partially overlap when the housing 10 is in the second posture, when viewed from the normal direction of the first surface 1631. In this case, the overlapping area of ​​the first surface 1631 and the second surface 2221 when viewed from the normal direction of the first surface 1631 is smaller when the housing 10 is in the second posture than when the housing 10 is in the first posture.

[0089] Thus, when the passenger 6000 operates the lever 17 to switch the posture of the housing 10, the sensor 16 detects the switching of the posture of the housing 10. As described above, the first control circuit 30 switches the opening and closing of the display panel 12 based on the detection result of the sensor. Therefore, the passenger 6000 can switch both the posture of the housing 10 and the opening and closing of the display panel by operating the lever 17. In the present embodiment, the first control circuit 30 makes the display panel 12 in a state of not displaying an image when the housing 10 is in the first posture. Therefore, when the relative position of the sensor 16 with respect to the operating unit 29 is the first position, the display panel 12 is difficult to be visually recognized by the passenger 6000 through the transmissive reflective unit 11. In other words, the relative position of the sensor 16 with respect to the operating unit 29 is the first position when the housing 10 is in the first posture. In addition, the first control circuit 30 makes the display panel in a state of displaying an image when the housing 10 is in the second posture. Alternatively, the first control circuit 30 may cause the display panel to display an image when the housing 10 is in the first posture, and cause the display panel to not display an image when the housing 10 is in the second posture. In this case, when the relative position of the sensor 16 to the operating unit 29 is the second position, the display panel 12 is difficult to be visually recognized by the occupant 6000 through the transmissive reflective unit 11. In other words, the case where the relative position of the sensor 16 to the operating unit 29 is the second position is the case where the housing 10 is in the second posture.

[0090] As described above, the display device 1 of the present embodiment includes the transmissive reflector 11, the display panel 12, the first control circuit 30, the sensor 16, and the operating unit 29. The transmissive reflector 11 transmits a part of the incident light and reflects a part of the incident light. The display panel 12 displays an image. The first control circuit 30 controls the display panel 12. The sensor 16 includes a light emitting element 161, a light receiving element 162 that receives reflected light of the light emitted by the light emitting element 161, and a substrate 163 having a first surface 1631. The light emitting element 161 and the light receiving element 162 are located on the first surface 1631. The operating unit 29 switches the relative position of the sensor 16 with respect to the operating unit 29 between the first position and the second position different from the first position, so that the amount of light received by the light receiving element changes. The first control circuit 30 switches the display panel 12 on and off based on the amount of light received by the light receiving element 162.

[0091] Thus, in the display device 1 of this embodiment, the sensor includes a light emitting element, a light receiving element, and a substrate, and has a structure in which the light emitting element and the light receiving element are located on the same surface. That is, compared with the prior art, the display device 1 of this embodiment can use a small sensor. Therefore, the display device 1 of this embodiment can be miniaturized.

[0092] In the present embodiment, the display device 1 includes one sensor 16, but the number of sensors may be two or more. By setting the number of sensors to two or more, the first control circuit 30 can detect three or more postures of the housing 10. For example, when a sensor 16a having a light emitting element 161a and a light receiving element 162a is provided in parallel with the sensor 16 at a position closer to the front side than the sensor 16 on the sixth surface 141, the first control circuit 30 can detect three postures of the housing based on a voltage of a magnitude corresponding to the current flowing through the sensor 16 and the sensor 16a. The three postures are, for example, a posture in which the light receiving element 162 and the light receiving element 162a receive reflected light of the light emitted by the light emitting element 161 and the light emitting element 161a, respectively, a posture in which only the light receiving element 162 receives reflected light of the light emitted by the light emitting element 161, and a posture in which neither the light receiving element 162 nor the light receiving element 162a receives reflected light. By increasing the number of sensors, more postures can be detected.

[0093] (Second embodiment)

[0094] Hereinafter, a second embodiment of the display device of the present disclosure will be described with reference to the drawings.

[0095] The display system 1000 of this embodiment differs from the first embodiment in the position of the sensor 16 and the position of the second surface 2221. The other structures are the same as those of the display system 1000 of the first embodiment, and therefore, the same reference numerals are given to the same components as those of the display system 1000 of the first embodiment, and their description is omitted.

[0096] Fig.10 is along Figure 3 The section line AA shown is a cross-sectional view of the display device 1 a in the first posture. Fig.11 is along Figure 3 The cross-sectional view of the display device 1 a in the second posture is taken along the cutting line AA.

[0097] In the display device 1a of the second embodiment, the sensor 16 is located at the lower side portion on the fourth surface 132. The protrusion 222 has a second surface 2221a facing the first surface 1631. Fig.10 As shown, when the display device 1 a is in the first posture, if the light emitting element 161 and the second surface 2221 a overlap when viewed from the normal direction of the first surface 1631 , the sensor 16 can be located at any position on the fourth surface 132 .

[0098] like Fig.10 and Fig.11As shown, the posture of the housing 10 is changed by switching the position of the lever 17, and the relative position of the sensor 16 with respect to the protrusion 222 is switched. Specifically, when the lever 17 is operated in a manner toward the front of the display device 1a, that is, toward the occupant 6000, the housing 10 is switched to the first posture. On the other hand, when the lever 17 is operated in a manner toward the rear of the display device 1a, that is, away from the occupant 6000, the housing 10 is switched to the second posture.

[0099] When the housing 10 is in the first posture, the first surface 1631 and the second surface 2221a overlap when viewed from the normal direction of the first surface 1631. Therefore, when the housing 10 is in the first posture, the light emitted by the light emitting element 161 is reflected by the second surface 2221a of the protrusion 222. On the other hand, when the housing 10 is in the second posture, the first surface 1631 and the second surface 2221a do not overlap when viewed from the normal direction of the first surface 1631. Therefore, when the housing 10 is in the second posture, the light emitted by the light emitting element 161 is not reflected by the second surface 2221a. Therefore, compared with the case where the housing 10 is in the first posture, when the housing 10 is in the second posture, the amount of reflected light received by the light receiving element 162, which is the light emitted by the light emitting element 161 and reflected by the second surface 2221a, is smaller. Therefore, when the housing 10 is in the second posture, the current generated by the light receiving element 162 is smaller than when the housing 10 is in the first posture.

[0100] If the amount of light received by the light receiving element 162 changes between when the housing 10 is in the first posture and when it is in the second posture, the first surface 1631 and the second surface 2221a may partially overlap when the housing 10 is in the second posture, when viewed from the normal direction of the first surface 1631. In this case, the overlapping area of ​​the first surface 1631 and the second surface 2221a when viewed from the normal direction of the first surface 1631 is smaller when the housing 10 is in the second posture than when the housing 10 is in the first posture.

[0101] Furthermore, the display device 1a may have a structure in which the distance between the first surface 1631 and the second surface 2221a is changed by operating the lever 17, thereby switching the display panel 12 on and off. Specifically, when the plate 22 moves in a direction in which the second surface 2221a is away from the first surface 1631, it becomes difficult for the light emitted by the light emitting element 161 to reach the second surface 2221a, and thus the amount of light received by the light receiving element 162 decreases. On the other hand, when the plate 22 moves in a direction in which the second surface 2221a is close to the first surface 1631, it becomes easy for the light emitted by the light emitting element 161 to reach the second surface 2221a, and thus the amount of light received by the light receiving element 162 increases. That is, by changing the distance between the operating portion 29 and the sensor 16, the amount of light received by the light receiving element 162 can be changed. Thus, the first control circuit 30 can switch the display panel 12 on and off according to the amount of light received by the light receiving element 162. Alternatively, the housing 10 may move in a direction in which the first surface 1631 approaches or moves away from the second surface 2221a. Alternatively, the first substrate 13 may move in a direction in which the first surface 1631 approaches or moves away from the second surface 2221a.

[0102] The structure in which the display panel 12 is switched on and off by changing the distance between the first surface 1631 and the second surface 2221a can also be applied to the first embodiment. Figure 4 In the embodiment, if the plate 22 is moved in the vertical direction by operating the lever 17, the distance between the first surface 1631 and the second surface 2221 can be changed. At this time, the first control circuit 30 can switch the display panel 12 on and off according to the amount of light received by the light receiving element 162.

[0103] Furthermore, in the display device 1a of the second embodiment, since the sensor 16 is provided on the fourth surface 132 of the first substrate 13, it is not necessary to provide the second substrate 14 of the display device 1 of the first embodiment. Therefore, in the display device 1a of the second embodiment, it is possible to reduce the number of components and weight of the display device 1 of the first embodiment.

[0104] The above has described various embodiments of the present disclosure, but the above embodiments are presented as examples and are not intended to limit the scope of the invention. These new embodiments can be implemented in various other forms, and various omissions, substitutions, and changes can be made without departing from the scope of the main purpose of the invention. These new embodiments and their modifications are included in the scope and main purpose of the invention, and are included in the technical solutions described in the claims and their equivalents. In addition, the constituent elements of different embodiments and modified examples can also be appropriately combined.

[0105] In addition, the effects of each embodiment described in this specification are merely illustrative and are not limited to these, and other effects may also be present.

[0106] (Note)

[0107] One aspect of the present disclosure is as follows.

[0108] [Project 1]

[0109] A display device, wherein

[0110] The display device comprises:

[0111] a transmissive reflector that transmits a portion of incident light and reflects a portion of the incident light;

[0112] a display panel that displays an image;

[0113] A sensor comprising a substrate, a light emitting element and a light receiving element, wherein the substrate has a first surface, the light emitting element is located on the first surface, and the light receiving element is located on the first surface and receives reflected light of light emitted by the light emitting element;

[0114] Operations department; and

[0115] a first control circuit for controlling switching of the display panel on and off based on the amount of light received by the light receiving element;

[0116] The operation portion switches a relative position of the sensor with respect to the operation portion between a first position and a second position different from the first position, thereby changing an amount of light received by the light receiving element.

[0117] According to this aspect, the display device can be miniaturized compared to the conventional technology.

[0118] [Project 2]

[0119] The display device according to item 1, wherein:

[0120] The operating portion has a plurality of surfaces including a second surface,

[0121] The second surface is a surface that faces the first surface when the relative position of the sensor to the operating portion is the first position.

[0122] When the relative position of the sensor with respect to the operating portion is the first position and the area of ​​overlap between the first surface and the second surface is viewed from the normal direction of the first surface, the area of ​​overlap between the first surface and the second surface is larger than when the relative position of the sensor with respect to the operating portion is the second position and the area of ​​overlap between the first surface and the second surface is viewed from the normal direction of the first surface.

[0123] According to this aspect, by changing the overlapping area between the operation portion and the sensor, it is possible to change the amount of light received by the light receiving element.

[0124] [Item 3]

[0125] The display device according to item 1, wherein:

[0126] The operating portion has a plurality of surfaces including a second surface,

[0127] The second surface is a surface that faces the first surface when the relative position of the sensor to the operating portion is the first position.

[0128] The shortest distance between the first surface and the second surface when the relative position of the sensor with respect to the operating portion is the first position is shorter than the shortest distance between the first surface and the second surface when the relative position of the sensor with respect to the operating portion is the second position.

[0129] According to this aspect, by changing the distance between the operation portion and the sensor, the amount of light received by the light receiving element can be changed.

[0130] [Item 4]

[0131] The display device according to any one of items 1 to 3, wherein:

[0132] The display device further includes a first substrate, the first substrate being located on the opposite side of the display panel from the transmissive reflector and having a third surface and a fourth surface facing each other.

[0133] The display panel has a display surface for displaying the image and a fifth surface opposite to the display surface.

[0134] The third surface and the fifth surface are opposite to each other,

[0135] The sensor is located on the fourth surface.

[0136] According to this aspect, the number of components of the display device can be reduced, thereby achieving weight reduction of the display device.

[0137] [Item 5]

[0138] The display device according to any one of items 1 to 3, wherein:

[0139] The display device also has:

[0140] a first substrate located on the opposite side of the display panel from the transmissive reflective portion and having a third surface; and

[0141] a second substrate having a sixth surface extending in a direction intersecting the display panel,

[0142] The display panel has a display surface for displaying the image and a fifth surface opposite to the display surface.

[0143] The third surface and the fifth surface are opposite to each other,

[0144] The sensor is located on the sixth surface.

[0145] According to this aspect, by making the relative position of the sensor with respect to the operation portion different, it is easy to make the amount of light received by the light receiving element significantly different.

[0146] [Item 6]

[0147] The display device according to item 4 or 5, wherein:

[0148] The display device further includes a housing that supports the transmissive reflector, the display panel, and the first substrate.

[0149] The operating unit switches the position of the housing between a third position and a fourth position different from the third position.

[0150] When the housing is in the third position, the relative position of the sensor with respect to the operating portion is the first position, and when the housing is in the fourth position, the relative position of the sensor with respect to the operating portion is the second position.

[0151] According to this aspect, both the posture of the casing and the opening and closing of the display panel can be switched simply by operating the operation unit.

[0152] [Item 7]

[0153] The display device according to item 6, wherein:

[0154] The operation portion is located on the opposite side of the display panel from the transmissive reflective portion.

[0155] The operating unit comprises:

[0156] a plate that supports the housing; and

[0157] a rod capable of switching the relative position of the housing relative to the plate,

[0158] The plate has a protrusion protruding in a direction from the display panel toward the transmissive reflective portion,

[0159] The protrusion has the second surface.

[0160] According to this embodiment, the operating portion includes a plate and a rod, and the protrusion having the second surface can be provided on the plate side. Thus, the degree of freedom in design is increased, so that, for example, the second surface can be provided at a position closer to the sensor. Therefore, by making the relative position of the sensor with respect to the operating portion different, it is easy to make the amount of light received by the light receiving element significantly different.

[0161] [Item 8]

[0162] The display device according to item 6, wherein:

[0163] The operation portion is a lever located on a side opposite to the transmissive reflective portion with respect to the display panel.

[0164] According to this aspect, the display device can be switched on and off with a simple structure, thereby achieving a reduction in weight of the display device.

[0165] [Item 9]

[0166] The display device according to item 8, wherein:

[0167] The operation portion includes a protrusion that protrudes in a direction from the display panel toward the transmissive reflective portion.

[0168] The protrusion has the second surface.

[0169] According to this aspect, the display device can be switched on and off with a simple structure, thereby achieving a reduction in weight of the display device.

[0170] [Item 10]

[0171] The display device according to item 7, wherein:

[0172] The plate and the protrusion are formed of mutually different materials.

[0173] According to this aspect, it is easy to set the reflectance of the second surface to a desired value.

[0174] [Item 11]

[0175] The display device according to item 9, wherein:

[0176] The operating portion and the protruding portion are formed of different materials from each other.

[0177] According to this aspect, it is easy to set the reflectance of the second surface to a desired value.

[0178] [Item 12]

[0179] The display device according to item 10 or 11, wherein:

[0180] The protrusion is formed of a reflective material.

[0181] According to this aspect, the second surface having a reflectivity of a desired value can be obtained by appropriately selecting the type of reflective material and the manufacturing method.

[0182] [Item 13]

[0183] The display device according to item 7 or 9, wherein:

[0184] A reflective sheet is mounted on the second surface.

[0185] According to this aspect, the second surface having a desired reflectance value can be obtained by appropriately selecting the type and manufacturing method of the reflection sheet.

[0186] [Item 14]

[0187] The display device according to item 7 or 9, wherein:

[0188] The housing supports a panel operation unit for operating the display panel.

[0189] The panel operation unit supports the second substrate, and the second substrate has a sixth surface extending in a direction intersecting the display panel.

[0190] The second substrate includes an LED that illuminates the panel operation portion.

[0191] According to this aspect, the sensor can be provided on the second substrate having the LED. Therefore, the display device does not need to include an additional substrate for providing the sensor, and the display device can be miniaturized.

[0192] [Item 15]

[0193] The display device according to any one of items 1 to 3, wherein:

[0194] The first control circuit causes the display panel to display the image when the relative position of the sensor with respect to the operation portion is the first position.

[0195] According to this aspect, when the relative position of the sensor to the operating unit is the second position, no image is displayed on the display panel. Therefore, when the relative position of the sensor to the operating unit is the second position, the display panel is difficult for the occupant to visually recognize through the transmissive reflective portion.

[0196] [Item 16]

[0197] The display device according to any one of items 1 to 3, wherein:

[0198] The first control circuit causes the display panel to display the image when the relative position of the sensor with respect to the operation portion is the second position.

[0199] According to this aspect, when the relative position of the sensor to the operating unit is the first position, no image is displayed on the display panel. Therefore, when the relative position of the sensor to the operating unit is the first position, the display panel is difficult for the occupant to visually recognize through the transmissive reflective portion.

[0200] [Item 17]

[0201] The display device according to any one of items 1 to 3, wherein:

[0202] The transmissive reflective portion comprises:

[0203] a transparent plate that transmits the incident light; and

[0204] The polarizing reflection layer is located on the display panel side relative to the transparent plate, transmits light polarized in a first direction, and reflects light in a direction different from the first direction.

[0205] According to this aspect, the user can switch between a state in which the user visually recognizes the image displayed on the display panel through the transmissive reflective portion and a state in which the user visually recognizes a mirror image generated by light reflected by the transmissive reflective portion.

[0206] [Item 18]

[0207] The display device according to item 17, wherein:

[0208] The transmissive reflector further includes a first electrode, a second electrode, and a control substance located between the first electrode and the second electrode.

[0209] The state of the control substance changes according to the potential difference between the first electrode and the second electrode, thereby changing the reflectivity of the transmissive reflector.

[0210] According to this aspect, for example, the reflectivity of the transmissive reflective portion can be controlled according to the environment around the vehicle.

[0211] Description of Reference Numerals

[0212] 1. 1a. display device; 10. casing; 11. transmission and reflection part; 12. display panel; 122. fifth surface; 13. first substrate; 131. third surface; 132. fourth surface; 14. second substrate; 141. sixth surface; 142. seventh surface; 16. sensor; 161. light-emitting element; 162. light-receiving element; 163. substrate; 1631. first surface; 17. rod; 18. panel operation part; 19. LED; 22. plate; 222. protrusion; 2221, 2221a. second surface; 29. ​​operation part; 30. first control circuit.

Claims

1. A display device, wherein: The display device comprises: a transmissive reflector that transmits a portion of incident light and reflects a portion of the incident light; a display panel that displays an image; A sensor comprising a substrate, a light emitting element and a light receiving element, wherein the substrate has a first surface, the light emitting element is located on the first surface, and the light receiving element is located on the first surface and receives reflected light of light emitted by the light emitting element; Operations Department; as well as a first control circuit for controlling switching of the display panel on and off based on the amount of light received by the light receiving element; The operation portion switches a relative position of the sensor with respect to the operation portion between a first position and a second position different from the first position, thereby changing an amount of light received by the light receiving element.

2. The display device according to claim 1, wherein: The operating portion has a plurality of surfaces including a second surface, The second surface is a surface that faces the first surface when the relative position of the sensor to the operating portion is the first position. When the relative position of the sensor with respect to the operating portion is the first position and the area of ​​overlap between the first surface and the second surface is viewed from the normal direction of the first surface, the area of ​​overlap between the first surface and the second surface is larger than when the relative position of the sensor with respect to the operating portion is the second position and the area of ​​overlap between the first surface and the second surface is viewed from the normal direction of the first surface.

3. The display device according to claim 1, wherein: The operating portion has a plurality of surfaces including a second surface, The second surface is a surface that faces the first surface when the relative position of the sensor to the operating portion is the first position. The shortest distance between the first surface and the second surface when the relative position of the sensor with respect to the operating portion is the first position is shorter than the shortest distance between the first surface and the second surface when the relative position of the sensor with respect to the operating portion is the second position.

4. The display device according to any one of claims 1 to 3, wherein: The display device further includes a first substrate, the first substrate being located on the opposite side of the display panel from the transmissive reflector and having a third surface and a fourth surface facing each other. The display panel has a display surface for displaying the image and a fifth surface opposite to the display surface. The third surface and the fifth surface are opposite to each other, The sensor is located on the fourth surface.

5. The display device according to claim 2 or 3, wherein: The display device also has: a first substrate located on the opposite side of the display panel from the transmissive reflective portion and having a third surface; and a second substrate having a sixth surface extending in a direction intersecting the display panel, The display panel has a display surface for displaying the image and a fifth surface opposite to the display surface. The third surface and the fifth surface are opposite to each other, The sensor is located on the sixth surface.

6. The display device according to claim 5, wherein: The display device further includes a housing that supports the transmissive reflector, the display panel, and the first substrate. The operating unit switches the position of the housing between a third position and a fourth position different from the third position. When the housing is in the third position, the relative position of the sensor with respect to the operating portion is the first position, and when the housing is in the fourth position, the relative position of the sensor with respect to the operating portion is the second position.

7. The display device according to claim 6, wherein: The operation portion is located on the opposite side of the display panel from the transmissive reflective portion. The operating unit comprises: a plate that supports the housing; and a rod capable of switching the relative position of the housing relative to the plate, The plate has a protrusion protruding in a direction from the display panel toward the transmissive reflective portion, The protrusion has the second surface.

8. The display device according to claim 6, wherein: The operation portion is a lever located on a side opposite to the transmissive reflective portion with respect to the display panel.

9. The display device according to claim 8, wherein: The operation portion includes a protrusion that protrudes in a direction from the display panel toward the transmissive reflective portion. The protrusion has the second surface.

10. The display device according to claim 7, wherein: The plate and the protrusion are formed of mutually different materials.

11. The display device according to claim 9, wherein: The operation portion and the protrusion are formed of materials different from each other.

12. The display device according to claim 10, wherein: The protrusion is formed of a reflective material.

13. The display device according to claim 7, wherein: A reflective sheet is mounted on the second surface.

14. The display device according to claim 7, wherein: The housing supports a panel operation unit for operating the display panel. The panel operation unit supports the second substrate. The second substrate includes an LED that illuminates the panel operation portion.

15. The display device according to any one of claims 1 to 3, wherein: The first control circuit causes the display panel to display the image when the relative position of the sensor with respect to the operation portion is the first position.

16. The display device according to claim 2 or 3, wherein: The first control circuit causes the display panel to display the image when the relative position of the sensor with respect to the operation portion is the second position.

17. The display device according to any one of claims 1 to 3, wherein: The transmissive reflective portion comprises: a transparent plate that transmits the incident light; and The polarizing reflection layer is located on the display panel side relative to the transparent plate, transmits light polarized in a first direction, and reflects light in a direction different from the first direction.

18. The display device according to claim 17, wherein: The transmissive reflector further includes a first electrode, a second electrode, and a control substance located between the first electrode and the second electrode. The state of the control substance changes according to the potential difference between the first electrode and the second electrode, thereby changing the reflectivity of the transmissive reflector.

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