Liquid crystal display device

Abstract

To irradiate light onto the screen of a liquid crystal display device as needed while minimizing the weight of a portable main unit. [Solution] A liquid crystal display device (10) includes a main unit (1), a support unit (2), and an illumination device (55). The main unit (1) includes a reflective liquid crystal display unit (3). The support unit (2) supports the main unit (1). The illumination device (55) is provided on the support unit (2) and irradiates light obliquely upward from the support unit (2) toward the screen (3a) of the reflective liquid crystal display unit (3).

Description

[Technical Field]

[0001] The present disclosure relates to a liquid crystal display device having a reflective liquid crystal display unit. [Background technology]

[0002] The liquid crystal display device may include the reflective liquid crystal display unit, which reflects light incident from a screen to illuminate a liquid crystal panel that generates an image.

[0003] Furthermore, in the liquid crystal display device, it is known that an illumination device irradiates light onto the screen of the reflective liquid crystal display unit from diagonally above the screen (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2000-330110 Summary of the Invention [Problem to be solved by the invention]

[0005] When the reflective liquid crystal display unit is used in a bright place, the displayed image can be seen without the need for a dedicated lighting device to illuminate the screen.

[0006] On the other hand, the liquid crystal display device may include a main body unit including the reflective liquid crystal display unit and a support unit supporting the main body unit. The main body unit can be carried when detached from the support unit.

[0007] The support unit is detachably connected to the main unit and supports the main unit, and functions as, for example, a charging station that supplies power to a battery in the main unit.

[0008] In the liquid crystal display device, it is desirable to be able to irradiate light onto the screen as needed while keeping the weight of the portable main unit as small as possible.

[0009] An object of the present disclosure is to provide a liquid crystal display device that can irradiate light onto the screen as needed while minimizing the weight of the portable main unit. [Means for solving the problem]

[0010] A liquid crystal display device according to one aspect of the present disclosure includes a main unit, a support unit, and an illumination device. The main unit includes a reflective liquid crystal display unit. The support unit supports the main unit. The illumination device is provided on the support unit and irradiates light obliquely upward from the support unit toward a screen of the reflective liquid crystal display unit. [Effects of the Invention]

[0011] According to the present disclosure, it is possible to provide a liquid crystal display device that can irradiate light onto the screen as needed while keeping the weight of the portable main unit as small as possible. [Brief explanation of the drawings]

[0012] [Figure 1] FIG. 1 is a perspective view of a display device according to a first embodiment, as viewed from the front side. [Figure 2] FIG. 2 is a perspective view of the display device according to the first embodiment as viewed from the rear side. [Figure 3] FIG. 3 is a side view of the display device according to the first embodiment. [Figure 4] FIG. 4 is a side view of the main body unit and the support unit before they are connected to each other in the display device according to the first embodiment. [Figure 5] FIG. 5 is a side view of the main unit of the display device according to the first embodiment. [Figure 6]FIG. 6 is a perspective view of a first supporting portion and a first supported portion in the display device according to the first embodiment. [Figure 7] FIG. 7 is an exploded perspective view of the support unit in the display device according to the first embodiment. [Figure 8] FIG. 8 is a perspective view of the display device according to the second embodiment as viewed from the rear side. [Figure 9] FIG. 9 is a perspective view of a first supporting portion and a first supported portion in a display device according to a third embodiment. [Figure 10] FIG. 10 is a perspective view of the display device according to the third embodiment as viewed from the rear side. DETAILED DESCRIPTION OF THE INVENTION

[0013] Hereinafter, embodiments will be described with reference to the drawings. Note that the following embodiments are merely examples of embodiments and do not limit the technical scope of the present disclosure.

[0014] [First embodiment] A display device 10 according to the first embodiment includes a main unit 1 including a display unit 3, and a support unit 2 that supports the main unit 1 (see FIGS. 1 and 2).

[0015] The display unit 3 is a liquid crystal display unit that has a liquid crystal section 30 that generates images and displays the images generated by the liquid crystal section 30 on a screen 3a (see FIGS. 4 and 5). The support unit 2 supports the display unit 3 with the screen 3a of the display unit 3 facing forward.

[0016] The main unit 1 includes a display unit 3 and a rear connecting member 4 connected to the rear surface 3b of the display unit 3 (see FIG. 2). The rear connecting member 4 has a connecting portion 41 connected to the rear surface 3b of the display unit 3, a handle portion 42 formed above the connecting portion 41, and a leg portion 43 formed below the connecting portion 41 (see FIG. 2).

[0017] Handle 42 is a part used for carrying main unit 1. Leg 43 is formed to extend diagonally downward from connecting portion 41 (see FIG. 5). Connecting portion 41 is, for example, plate-shaped. Handle 42 is formed in a ring shape together with the upper edge of connecting portion 41, and the upper part of the ring is the part to be gripped with the hand.

[0018] The support unit 2 has a support portion 5x that is connected to a part of the rear connecting member 4 to support the rear connecting member 4 (see FIGS. 2 to 4). The support portion 5x is detachably connected to the rear connecting member 4 (see FIGS. 3 and 4). In other words, the rear connecting member 4 of the main unit 1 is detachably connected to the support portion 5x of the support unit 2.

[0019] 2 and 3 show a state in which the support portion 5x and the rear connecting member 4 are connected, and FIG. 4 shows a state in which the support portion 5x is detached from the rear connecting member 4.

[0020] When the support portion 5x is connected to the rear connecting member 4, the support unit 2 supports the main unit 1 (see FIG. 3). On the other hand, when the support portion 5x is detached from the rear connecting member 4, the main unit 1 can stand on its own on the placing surface 9 with the lower end portion 3c of the display unit 3 and the lower end portions of the legs 43 in contact with the placing surface 9 (see FIG. 5).

[0021] The main unit 1 can be used as a portable display device when not connected to the support unit 2. The portable main unit 1 includes a battery 32 (see FIGS. 2 and 3).

[0022] For example, a rod-shaped stand may be connected to the rear surface 3b of the display unit 3, and the support unit 2 may have a support post with a vertically long hole formed therein into which the stand is inserted.

[0023] In some cases, a pair of connectors may be provided at the tip of the rod-shaped stand and at the bottom of the hole in the support post. In this case, power is supplied from the support unit 2 to the main unit 1 by connecting the pair of connectors.

[0024] Furthermore, in a conventional display device, when a reflective liquid crystal display unit is used as the display unit 3, an illumination device may irradiate light onto the screen of the reflective liquid crystal display unit from diagonally above the screen.

[0025] When the rod-shaped stand portion of the main unit 1 is inserted into the hole in the support, the stand portion and the support are required to be relatively long so that the main unit 1 is stably supported.

[0026] It is desirable to be able to connect the main unit 1 to the support unit 2 more easily than by inserting the rod-shaped stand portion deeply into the hole in the support post.

[0027] Furthermore, it is desirable to be able to electrically connect the power supply line from the support unit 2 to the main unit 1 more easily than by inserting the rod-shaped stand portion deeply into the hole in the support post.

[0028] Furthermore, when the main unit 1 is used in a bright place, the displayed image can be seen without the need for a dedicated lighting device to illuminate the screen.

[0029] In this embodiment, the support unit 2 is detachably connected to the main unit 1 including the display unit 3. Therefore, the main unit 1 can be carried around in a state where it is detached from the support unit 2.

[0030] As will be described later, the support unit 2 functions as a charging station that supplies power to a battery 32 in the main unit 1.

[0031] When the display unit 3 is a reflective liquid crystal display unit, it is desirable to be able to irradiate the screen 3a of the display unit 3 with light as needed while keeping the weight of the portable main unit 1 as small as possible.

[0032] The display device 10 will be described in detail below. In each drawing, the first direction D1 is the width direction of the display device 10, the display unit 3, and the support unit 2. The second direction D2 is the depth direction of the display device 10, the display unit 3, and the support unit 2. The third direction D3 is the height direction of the display device 10, the display unit 3, and the support unit 2.

[0033] The rear connecting member 4 is connected to the rear surface 3b of the display unit 3 by a hinge 31 including a rotation shaft 31a arranged on the rear surface 3b of the display unit 3 (see FIGS. 3 and 4). The rotation shaft 31a is arranged along the first direction D1.

[0034] The rear connecting member 4 is connected to the display unit 3 by a hinge 31 so as to be swingable around a rotation axis 31a. When the rear connecting member 4 swings around the rotation axis 31a, the leg portion 43 moves toward or away from the rear surface 3b of the display unit 3. This allows the leg portion 43 to switch between a state in which it extends diagonally downward from the connecting portion 41 and a state in which it extends downward from the connecting portion 41 along the rear surface 3b.

[0035] 4 shows a close state in which the leg 43 is along the rear surface 3b of the display unit 3, and Fig. 5 shows a distant state in which the leg 43 is further away from the rear surface 3b of the display unit 3 than in the close state. In the distant state, the leg 43 extends diagonally downward from the connecting portion 41 to the rear side of the display unit 3.

[0036] The leg portion 43 has a main body side extending portion 431 and a main body side horizontal bar portion 432 (see FIG. 2). The main body side extending portion 431 is a portion that extends downward from the connecting portion 41. In the separated state, the main body side extending portion 431 is held in a position in which it extends diagonally downward from the connecting portion 41. In this embodiment, the main body side extending portion 431 is a pair of bar-shaped portions formed at an interval in the first direction D1.

[0037] The main body side horizontal bar portion 432 is connected to the lower end of the main body side extending portion 431 and is formed in a rod shape along the first direction D1. For example, the main body side extending portion 431 and the main body side horizontal bar portion 432 are formed in a ring shape that widens downward together with the lower edge of the connecting portion 41.

[0038] The support unit 2 has a base portion 5 and an upright portion 6 (see FIGS. 2 to 4). The base portion 5 is disposed below the main unit 1. The upright portion 6 is configured integrally with the base portion 5 and is formed to stand upright from the base portion 5.

[0039] The base 5 has a housing 50 and a first support 51 provided on the top surface of the housing 50 (see FIGS. 2 to 4). The base 5 further has a power supply board 53 and one or more speakers 54 arranged inside the housing 50 (see FIGS. 1 and 7).

[0040] The standing portion 6 has a support-side extending portion 61 and a support-side horizontal bar portion 62 (see FIGS. 2 and 7). The support-side extending portion 61 is formed to extend upward from the housing 50 of the base portion 5. In this embodiment, the support-side extending portion 61 is a pair of bar-shaped portions formed at an interval in the first direction D1.

[0041] The support-side horizontal bar 62 is connected to the upper end of the support-side extending portion 61 and is formed in a rod shape along the first direction D1. That is, the support-side horizontal bar 62 is connected to the support-side extending portion 61 above the base portion 5. The support-side extending portion 61 and the support-side horizontal bar 62 are integrally configured.

[0042] In the support unit 2, the support portion 5x includes a first support portion 51 and a second support portion 60. The first support portion 51 and the second support portion 60 are integrally formed with the base portion 5. In this embodiment, the support-side extending portion 61 has a base end portion 61a, a bent portion 61b, and an oblique extending portion 61c (see FIG. 2).

[0043] The base end 61a is connected to the rear surface of the housing 50 and protrudes rearward from the rear surface of the housing 50. The bent portion 61b is a portion that bends diagonally upward toward the front from the base end 61a. The diagonally extending portion 61c is formed by extending diagonally upward toward the front from the bent portion 61b. The support-side horizontal bar portion 62 is disposed forward of the rear surface of the housing 50.

[0044] The support portion 5x is detachably connected to the rear connecting member 4 (see FIG. 3). When the support portion 5x is connected to the rear connecting member 4, the support unit 2 supports the main unit 1 by the first support portion 51 and the second support portion 60.

[0045] The first supporting portion 51 supports the first supported portion 44, which is the lower end portion of the rear connecting member 4 (see FIG. 3). The second supporting portion 60 supports the second supported portion 45, which is formed on the connecting portion 41 of the rear connecting member 4 (see FIG. 3). The supporting portion 5x supports the main unit 1 at two supporting points on the rear connecting member 4, which are spaced apart vertically.

[0046] In this embodiment, the main body side horizontal bar portion 432 forms the first supported portion 44, and the support side horizontal bar portion 62 forms the second supporting portion 60 (see FIG. 3). The second supporting portion 60 supports the second supported portion 45 at a position higher than the first supporting portion 51.

[0047] The first supported portion 44 is supported by the support unit 2 by engaging with the first support portion 51. The second supported portion 45 is supported by the support unit 2 by engaging with the second support portion 60. The main unit 1 is supported by the support unit 2 by the first supported portion 44 and the second supported portion 45 engaging with the first support portion 51 and the second support portion 60, respectively.

[0048] The first support part 51 has a groove-shaped support-side hook 51a into which the main body side horizontal bar part 432 constituting the first supported part 44 is fitted (see FIGS. 3 and 4). When the main body side horizontal bar part 432 is fitted into the support-side hook 51a, the first support part 51 and the main body side horizontal bar part 432 engage with each other.

[0049] The second supported portion 45 has a groove-shaped main body hook 45a into which the support side horizontal bar portion 62 constituting the second support portion 60 is fitted (see FIGS. 3 and 4). When the support side horizontal bar portion 62 is fitted into the main body hook 45a, the support side horizontal bar portion 62 and the second supported portion 45 engage with each other.

[0050] The first supporting portion 51 supports the rear connecting member 4 by engaging with the first supported portion 44 , and the second supporting portion 60 supports the rear connecting member 4 by engaging with the second supported portion 45 .

[0051] The first supporting portion 51 and the second supporting portion 60 are connected to the back connecting member 4 by engaging with the first supported portion 44 and the second supported portion 45, respectively. The supporting unit 2 supports the main unit 1 by the first supporting portion 51 and the second supporting portion 60.

[0052] The main body side extension portion 431 also serves as a hook guide portion 430 that guides the support side horizontal bar portion 62 to the main body side hook 45a when the main body unit 1 is brought closer to the support unit 2 from above the support unit 2 (see FIG. 4).

[0053] Specifically, when the main unit 1 is moved toward the support unit 2 from above, the support-side horizontal bar 62 slides against a specific surface of the main unit-side extending portion 431. The specific surface is the surface of the main unit-side extending portion 431 that faces the rear surface 3b of the display unit 3.

[0054] The support side horizontal bar portion 62 slides on the specific surface of the main body side extension portion 431 and is guided by the main body side extension portion 431 to the main body side hook 45a.

[0055] The main unit 1 further includes a main body side terminal row 46 provided on the main body side horizontal bar portion 432, and a plurality of main body side conductive lines L1 electrically connected to the main body side terminal row 46 (see FIGS. 2, 6, and 7).

[0056] Each of the plurality of terminals included in the body-side terminal row 46 is a conductive member such as a copper plate, etc. Each of the plurality of body-side conductive lines L1 is a conductive member such as a cable or a metal strip, etc.

[0057] The plurality of body-side conductive lines L1 include a plurality of body-side power supply lines L11 and one or more body-side acoustic signal lines L12.

[0058] The main body side terminal row 46 includes a plurality of power input terminals 46a and one or more acoustic output terminals 46b (see FIG. 6). The plurality of power input terminals 46a are electrically connected to a plurality of main body side power feed lines L11. The acoustic output terminal 46b is electrically connected to a main body side acoustic signal line L12.

[0059] On the other hand, the support unit 2 further includes a power cord L3, a support side terminal row 52 provided on the first support portion 51, and a plurality of support side conductive lines L2 electrically connected to the support side terminal row 52 (see Figures 2, 6, and 7).

[0060] The plurality of support-side conductive lines L2 includes a plurality of support-side power supply lines L21 and one or more support-side acoustic signal lines L22.

[0061] The support-side terminal row 52 includes a plurality of power output terminals 52a and one or more acoustic input terminals 52b (see FIG. 6). The plurality of power output terminals 52a are electrically connected to a plurality of support-side power feed lines L21. The acoustic input terminal 52b is electrically connected to the support-side acoustic signal line L22.

[0062] Each of the plurality of terminals included in the support-side terminal row 52 is a conductive member such as a copper plate, etc. Each of the plurality of support-side conductive lines L2 is a conductive member such as a cable or a metal strip, etc.

[0063] In this embodiment, the multiple body-side conductive lines L1 include two body-side power supply lines L11 and four body-side audio signal lines L12 corresponding to the two speakers 54. Similarly, the body-side terminal row 46 includes two power input terminals 46a and four audio output terminals 46b.

[0064] Similarly, the multiple support-side conductive lines L2 include two support-side power supply lines L21 and four support-side acoustic signal lines L22 corresponding to the two speakers 54. Similarly, the support-side terminal row 52 includes two power output terminals 52a and four acoustic input terminals 52b.

[0065] The power supply board 53 converts AC power supplied from an external power source through the power cord L3 into DC power. The two support-side power supply lines L21 transmit the DC power generated by the power supply board 53.

[0066] The two support-side feed lines L21 are arranged across the inside of the housing 50 and the inside of the first support part 51 (see FIG. 2).

[0067] The two power output terminals 52a are an example of a power supply unit that supplies power to the two power input terminals 46a. The power supply board 53 is an example of a power source that supplies power to the power supply unit. The two power input terminals 46a are an example of a power receiving unit that receives power from the support unit 2 side.

[0068] The two main body side power supply lines L11 are arranged within the main body side horizontal bar portion 432, the main body side extension portion 431, and the display unit 3 (see FIG. 2). The two main body side power supply lines L11 transmit power supplied to the two power input terminals 46a to the battery 32 in the display unit 3.

[0069] The display unit 3 further includes a control board 33 (see FIG. 2) that operates using power supplied from the battery 32. The control board 33 includes an audio output circuit 32a that outputs an audio signal.

[0070] The four main body side acoustic signal lines L12 are arranged across the display unit 3, the main body side extension portion 431, and the main body side horizontal bar portion 432 (see FIG. 2). The four main body side acoustic signal lines L12 transmit the acoustic signals output from the acoustic output circuit 32a in the display unit 3 to the main body side horizontal bar portion 432.

[0071] The four acoustic output terminals 46b are arranged alongside the two power input terminals 46a in the main body side terminal row 46. The four acoustic output terminals 46b are electrically connected to the four main body side acoustic signal lines L12.

[0072] For example, the rear connecting member 4 is made up of two combined resin members. The two resin members form a hollow space in which two main body side power feed lines L11 and four main body side acoustic signal lines L12 are wired.

[0073] The four acoustic input terminals 52b are arranged alongside the two power output terminals 52a in the support-side terminal row 52. The four acoustic input terminals 52b are electrically connected to the four support-side acoustic signal lines L22.

[0074] The four support-side acoustic signal lines L22 are electrically connected to the two speakers 54. The four support-side acoustic signal lines L22 transmit the acoustic signals input to the four acoustic input terminals 52b to the two speakers 54.

[0075] The portion of the body-side horizontal bar portion 432 where the body-side terminal row 46 is provided is the first supported portion 44. The first supported portion 44 is fitted into the support-side hooks 51a of the first support portion 51. By fitting the first supported portion 44 into the support-side hooks 51a, the two power output terminals 52a come into contact with the two power input terminals 46a, and the four acoustic output terminals 46b come into contact with the four acoustic input terminals 52b.

[0076] The main body unit 1 is supported by the support unit 2 at the first supported portion 44 of the main body side horizontal bar portion 432 and at the second supported portion 45 located above the first supported portion 44. As a result, the main body unit 1 is stably supported by the support unit 2 even if the support side hooks 51a and the main body side hooks 45a are shallow groove-shaped.

[0077] Furthermore, the operation of engaging the first supported portion 44 and the second supported portion 45 with the first supporting portion 51 and the second supporting portion 60 of the supporting unit 2 is easier than the operation of inserting the rod-shaped stand portion deeply into the hole in the support.

[0078] By employing the display device 10, the main unit 1 including the display unit 3 can be easily connected to the support unit 2.

[0079] Furthermore, by employing the display device 10, the support-side power supply line L21 and the main body-side power supply line L11, which are power supply lines to the main body unit 1, can be easily electrically connected.

[0080] Furthermore, the body-side terminal row 46 is provided on the body-side horizontal bar portion 432 extending in the first direction D1. In this case, relatively wide terminals can be used as each of the plurality of terminals included in the body-side terminal row 46 and the plurality of terminals included in the support-side terminal row 52.

[0081] Therefore, even if the main body side horizontal bar portion 432 is loosely positioned relative to the first support portion 51 in the first direction D1, poor contact between the main body side terminal row 46 and the support side terminal row 52 is unlikely to occur.

[0082] In this embodiment, the display unit 3 is a reflective liquid crystal display unit that illuminates the liquid crystal section 30 by reflecting light that enters the unit from the screen 3a.

[0083] The base 5 of the support unit 2 further includes an illumination device 55 that irradiates light onto the screen 3a of the display unit 3 (see FIGS. 3 and 7). The illumination device 55 irradiates light obliquely upward from the base 5 toward the screen 3a of the display unit 3 (see FIG. 3).

[0084] The lighting device 55 includes a light source 551 and a mirror 552 arranged inside the housing 50, and a diffusion plate 553 arranged on the upper surface of the housing 50 (see FIGS. 3 and 7). The power supply board 53 also serves as a power source that supplies power to the light source 551.

[0085] The mirror 552 reflects the light emitted from the light source 551 obliquely upward toward the screen 3 a of the display unit 3 .

[0086] The diffusion plate 553 transmits and diffuses the light reflected by the mirror 552. The diffusion plate 553 diffuses the light reflected by the mirror 552 over the entire area of ​​the screen 3a of the display unit 3.

[0087] The diffusion plate 553 diffuses the reflected light so that the reflected light is irradiated as evenly as possible over the entire screen 3a.

[0088] 7, the housing 50 includes a box portion 50a that houses a light source 551 and a mirror 552, and a lid portion 50b that covers an opening at the top of the box portion 50a and forms the upper surface of the housing 50. The diffusion plate 553 is fitted into an opening 50c formed in the lid portion 50b.

[0089] By employing the display device 10, it is possible to irradiate the screen 3a of the display unit 3 with light as needed while keeping the weight of the portable main unit 1 as small as possible.

[0090] Furthermore, the lighting device 55 irradiates the screen 3a with light from below and in front of the main unit 1. Therefore, the lighting device 55 does not obstruct the field of view of a person viewing the screen 3a.

[0091] As described above, the rear connecting member 4 is swingably connected to the rear surface 3b of the display unit 3 by the hinge 31. When the support part 5x is connected to the rear connecting member 4, the display unit 3 is supported by the rear connecting member 4 so that the angle of the screen 3a relative to the horizontal plane can be changed (see FIG. 3).

[0092] That is, the rear connecting member 4 is a support mechanism that, when connected to the support unit 2, realizes a so-called tilt function.

[0093] For example, the rotation axis 31a of the hinge 31 is disposed in an area on the back surface 3b of the display unit 3 that is above the center of the display unit 3 in the up-down direction. As a result, when the display unit 3 swings around the rotation axis 31a, the upper end of the screen 3a moves only a relatively short distance.

[0094] When light from the lighting device 55 is emitted diagonally upward toward the screen 3a of the display unit 3, the amount of light entering the display unit 3 changes more at the upper end of the screen 3a than at the lower end of the screen 3a in response to changes in the tilt of the screen 3a.

[0095] By positioning the rotation axis 31a of the hinge 31 at a position close to the upper end of the display unit 3, changes in the amount of light entering the display unit 3 when the display unit 3 swings around the rotation axis 31a are suppressed.

[0096] In this embodiment, the base portion 5 of the support unit 2 is equipped with a support state detection device 56 that detects a reference support state (see FIG. 3). The reference support state is a state in which the support portion 5x is connected to the rear connecting member 4 and the display unit 3 is supported at a predetermined reference position in the swing direction. FIG. 3 shows the display device 10 in the reference support state.

[0097] For example, the support state detection device 56 is a contact or non-contact object sensor that detects the lower end 3c of the display unit 3 at a detection position along the upper surface of the base 5. The detection position is the position of the lower end 3c of the display unit 3 when the display device 10 is in the reference support state.

[0098] The support state detection device 56 shown in FIG. 3 is a contact sensor that detects the lower end 3c of the display unit 3 by coming into contact with the lower end 3c of the display unit 3 at the detection position.

[0099] The non-contact object sensor may be an infrared sensor or an image processing sensor, etc. The image processing sensor includes a camera and an image processing device that processes an image obtained by the camera.

[0100] For example, a specific mark such as a QR code is marked on the bottom end 3c of the display unit 3, and the image processing device detects the bottom end 3c of the display unit 3 by identifying the mark. Alternatively, if the camera is a wide-angle camera, the image processing device may detect the bottom end 3c of the display unit 3 by distinguishing between an image of the bottom end 3c of the display unit 3 and an image of the leg 43. By employing the image processing sensor, the detection of the bottom end 3c of the display unit 3 and processing based on the detection results can be more reliably performed.

[0101] Furthermore, in this embodiment, the power supply board 53 includes an automatic lighting switch circuit 53a. The automatic lighting switch circuit 53a switches the lighting device 55 on and off depending on whether the reference support state is detected by the support state detection device 56 or not.

[0102] Specifically, the automatic lighting switch circuit 53a turns on the light source 551 of the lighting device 55 when the reference support state is detected. On the other hand, the automatic lighting switch circuit 53a turns off the light source 551 of the lighting device 55 when the reference support state is not detected. The automatic lighting switch circuit 53a is an example of a first automatic lighting switch.

[0103] The reference support state is a state in which the lighting device 55 appropriately illuminates the entire screen 3a of the display unit 3. By employing the support state detection device 56 and the automatic lighting switch circuit 53a, it is possible to easily check whether the screen 3a of the display unit 3 is facing in the appropriate direction based on whether or not light is being emitted by the lighting device 55.

[0104] [Second embodiment] Next, a display device 10A according to a second embodiment will be described with reference to Fig. 8. Below, differences between the display device 10A and the display device 10 will be described.

[0105] The display device 10A has a configuration in which a width direction guide unit 57, a brightness sensor 58, and an automatic lighting switch circuit 53b are added to the display device 10. The brightness sensor 58 is provided in the housing 50 of the base unit 5. The automatic lighting switch circuit 53b is provided on the power supply board 53.

[0106] The width-direction guide portion 57 is provided on the upper surface of the base portion 5. When the main unit 1 is brought closer to the base portion 5 of the support unit 2 from above the support unit 2, the width-direction guide portion 57 guides the rear connecting member 4 to a target position in the first direction D1.

[0107] The target position is the position of the back connecting member 4 in the first direction D1 when the main body side terminal row 46 comes into appropriate contact with the support side terminal row 52.

[0108] In this embodiment, the width direction guide portion 57 is formed on the upper surface of the housing 50 at a position aligned with the first support portion 51 so as to protrude from the upper surface of the housing 50 .

[0109] The width-direction guide portion 57 has a pair of guide surfaces 57a formed such that the distance between them in the first direction D1 gradually increases upward from the top surface of the housing 50. The main body side extending portion 431 of the rear connecting member 4 slides on the pair of guide surfaces 57a, thereby guiding the rear connecting member 4 to the target position in the first direction D1.

[0110] The brightness sensor 58 is an example of a brightness detection device that detects the brightness around the support unit 2. For example, the brightness sensor 58 is a sensor that detects the amount of received light using a CdS cell.

[0111] The automatic lighting switch circuit 53b switches the lighting device 55 on and off according to the detection result of the brightness sensor 58. The automatic lighting switch circuit 53b is an example of a second automatic lighting switch.

[0112] Specifically, the automatic lighting switch circuit 53b turns on the light source 551 of the lighting device 55 when the amount of light detected by the brightness sensor 58 is below the reference amount of light. On the other hand, the automatic lighting switch circuit 53b turns off the light source 551 of the lighting device 55 when the amount of light detected by the brightness sensor 58 is above the reference amount of light.

[0113] When the display device 10A is employed, the same effects as when the display device 10 is employed can be obtained.

[0114] Furthermore, by employing the brightness sensor 58 and the automatic lighting switch circuit 53b, it is possible to prevent the lighting device 55 from wasting power when the surroundings of the support unit 2 are sufficiently bright.

[0115] [Third embodiment] Next, a display device 10B according to a third embodiment will be described with reference to Figures 9 and 10. Below, differences between the display device 10B and the display device 10 will be described.

[0116] The display device 10B has a configuration in which the multiple power output terminals 52a and the multiple power input terminals 46a of the display device 10 are replaced with a power feeding coil 52x, a wireless power feeding circuit 53c, a power receiving coil 46x, and a wireless power receiving circuit 32b.

[0117] The power supply coil 52x is provided in the first support part 51 of the support unit 2. The wireless power supply circuit 53c is provided on the power supply board 53 in the housing 50. The power receiving coil 46x is provided in the main body side horizontal bar part 432 of the main unit 1. The wireless power receiving circuit 32b is provided on the control board 33 in the display unit 3.

[0118] In this embodiment, the two support-side power supply lines L21 electrically connect the wireless power supply circuit 53c and the power supply coil 52x, and the two body-side power supply lines L11 electrically connect the power receiving coil 46x and the wireless power receiving circuit 32b.

[0119] The power feeding coil 52x and the power receiving coil 46x wirelessly feed power output from the wireless power feeding circuit 53c from the power feeding coil 52x to the power receiving coil 46x.

[0120] The power supplied to the power receiving coil 46x is converted into DC power by the wireless power receiving circuit 32b, and the DC power is supplied to the battery 32. In this way, the battery 32 is charged.

[0121] In this embodiment, the power feeding coil 52x is an example of the power feeding unit, and the power receiving coil 46x is an example of the power receiving unit.

[0122] When the display device 10B is employed, the same effects as when the display device 10 is employed can be obtained.

[0123] The width direction guide 57 in the display device 10A may be applied to the display device 10B. Similarly, the brightness sensor 58 and the automatic light switch circuit 53b in the display device 10A may be applied to the display device 10B.

[0124] [Notes on the Invention] The following is a summary of the invention extracted from the above-described embodiment. Note that the configurations and processing functions described in the following supplementary notes can be selected and combined as desired.

[0125] <Appendix 1> a main body unit including a reflective liquid crystal display unit; a support unit that supports the main unit; a lighting device provided on the support unit and configured to irradiate light obliquely upward from the support unit toward a screen of the reflective liquid crystal display unit.

[0126] <Appendix 2> The liquid crystal display device according to claim 1, wherein the lighting device comprises a light source and a mirror that reflects light emitted from the light source obliquely upward toward a screen of the reflective liquid crystal display unit.

[0127] <Appendix 3> 3. The liquid crystal display device according to claim 2, wherein the lighting device includes a diffusion plate that transmits and diffuses the light reflected by the mirror.

[0128] <Appendix 4> the main unit is connected to the rear surface of the reflective liquid crystal display unit and includes a rear connection member having a leg portion extending obliquely downward from a portion connected to the rear surface of the main unit; The support unit includes: a base portion disposed below the main unit and on which the lighting device is provided; a support portion integrally formed with the base portion and removably connected to the back connecting member, When the support portion is connected to the back connecting member, the support unit supports the main unit, A liquid crystal display device described in any one of Appendix 1 to Appendix 3, wherein when the support part is detached from the rear connecting member, the main unit can stand on its own on the mounting surface with the lower end of the reflective liquid crystal display unit and the lower end of the legs in contact with the mounting surface.

[0129] <Appendix 5> The support portion is a first support portion that engages with a lower end of the leg portion; a second support portion that engages with a portion of the back connecting member that is above the lower end of the leg portion, 5. The liquid crystal display device according to claim 4, wherein the support unit supports the main unit by means of the first support portion and the second support portion.

[0130] <Appendix 6> the rear connection member is swingably connected to the rear surface of the reflective liquid crystal display unit, The liquid crystal display device described in Appendix 4 or Appendix 5, wherein when the support part is connected to the rear connecting member, the reflective liquid crystal display unit is supported by the rear connecting member so that the angle of the screen relative to the horizontal plane can be changed.

[0131] <Appendix 7> The liquid crystal display device described in Appendix 6, wherein the rear connecting member swings around a rotation axis located in an area above the vertical center of the reflective liquid crystal display unit on the rear of the reflective liquid crystal display unit, thereby causing the legs to move closer to or farther away from the rear of the reflective liquid crystal display unit.

[0132] <Appendix 8> a support state detection device that detects a reference support state in which the support portion is connected to the rear connecting member and the reflective liquid crystal display unit is supported at a predetermined reference position in the swing direction; and a first automatic lighting switch that turns the lighting device on and off depending on whether the reference support state is detected by the support state detection device.

[0133] <Appendix 9> The support unit includes: a brightness detection device that detects the ambient brightness; A liquid crystal display device according to any one of Supplementary Note 1 to Supplementary Note 8, further comprising: a second automatic lighting switch that turns on and off the lighting device depending on the detection result of the brightness detection device.

[0134] <Appendix 10> The liquid crystal display device according to any one of Supplementary Note 4 to Supplementary Note 8, wherein the rear connecting member has a handle portion used for carrying the main unit. [Explanation of symbols]

[0135] 1: Main unit 2: Support unit 3: Display unit 4: Rear connecting member 5: Base 5x :Support part 6: Standing part 10,10A,10B:Display device 31: Hinge 31a: Rotating axis 32: Battery 32a: Audio output circuit 32b: Wireless power receiving circuit 33: Control board 41:Connection part 42: Handle 43: Legs 44:First supported part 45:Second supported part 45a: Main body hook 46: Terminal row on the main body side 46a: Power input terminal 46b: Audio output terminal 46x: receiving coil 50: Housing 51: 1st support part 51a: Support side hook 52: Support side terminal row 52a: Power output terminal 52b: Audio input terminal 52x: Power coil 53: Power supply board 53a: Automatic light switch circuit 53b: Automatic light switch circuit 53c: Wireless power supply circuit 54: Speaker 55: Lighting equipment 56: Support state detection device 57: Width direction guide part 58: Brightness sensor 60:Second support part 61: Support side extension part 62: Support side horizontal bar part 430: Hook guide 431: Main body side extension part 432: Main body side horizontal bar 551 :Light source 552: Mirror 553: Diffuser L1: Main body side conductive line L11: Main unit power supply line L12: Main unit audio signal line L2: Support side conductive line L21: Support side power supply line L22: Support side acoustic signal line

Claims

1. a main body unit including a reflective liquid crystal display unit; a support unit that supports the main unit; a lighting device provided on the support unit and configured to irradiate light obliquely upward from the support unit toward a screen of the reflective liquid crystal display unit.

2. 2. The liquid crystal display device according to claim 1, wherein the illumination device comprises a light source and a mirror that reflects light emitted from the light source obliquely upward toward a screen of the reflective liquid crystal display unit.

3. The liquid crystal display device according to claim 2 , wherein the lighting device includes a diffusion plate that transmits and diffuses the light reflected by the mirror.

4. the main unit is connected to the rear surface of the reflective liquid crystal display unit and includes a rear connection member having legs extending downward from a portion connected to the rear surface of the main unit; The support unit includes: a base portion disposed below the main unit and on which the lighting device is provided; a support portion that is integral with the base portion and that supports the rear connecting member by being detachably connected to the rear connecting member, When the support portion is connected to the back connecting member, the support unit supports the main unit, 4. A liquid crystal display device as described in any one of claims 1 to 3, wherein when the support part is detached from the rear connecting member, the main unit can stand on its own on the mounting surface with the lower end of the reflective liquid crystal display unit and the lower end of the legs in contact with the mounting surface.

5. The support portion is a first support portion that supports the back connecting member by engaging with a lower end portion of the leg portion; a second support portion that supports the back connecting member by engaging with a portion of the back connecting member that is higher than the lower end of the leg portion, The liquid crystal display device according to claim 4 , wherein the support unit supports the main unit by means of the first support portion and the second support portion.

6. the rear connection member is swingably connected to the rear surface of the reflective liquid crystal display unit, 5. The liquid crystal display device according to claim 4, wherein when the support portion is connected to the rear connecting member, the reflective liquid crystal display unit is supported by the rear connecting member so that the angle of the screen relative to a horizontal plane can be changed.

7. 7. The liquid crystal display device of claim 6, wherein the rear connecting member swings around a rotation axis located in an area above the vertical center of the reflective liquid crystal display unit on the rear of the reflective liquid crystal display unit, thereby causing the legs to move closer to or farther away from the rear of the reflective liquid crystal display unit.

8. a support state detection device that detects a reference support state in which the support portion is connected to the rear connecting member and the reflective liquid crystal display unit is supported at a predetermined reference position in the swing direction; 7. The liquid crystal display device according to claim 6, further comprising: a first automatic lighting switch that switches the lighting device on and off depending on whether the reference support state is detected by the support state detection device.

9. The support unit includes: a brightness detection device that detects the ambient brightness; 4. The liquid crystal display device according to claim 1, further comprising: a second automatic lighting switch that switches the lighting device on and off in accordance with a detection result of the brightness detection device.

10. The liquid crystal display device according to claim 4 , wherein the rear connecting member has a handle portion used for carrying the main unit.

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