Display device

Abstract

A display device includes: a display panel in which a display screen and an indicator area are two-dimensionally arranged; an indicator substrate on which a light source assembly is mounted and which is disposed on the back side of the display panel to face the indicator area but not the display screen; and a control substrate which is a component separate from the indicator substrate and on which a control circuit for the display screen is formed. The control substrate is disposed on the back side of the display panel and is disposed farther away from the display panel than the indicator substrate, and the control substrate is disposed so as not to face at least a part of each of the display screen and the indicator substrate.

Description

Technical Field

[0001] The present invention relates to a display device including a display panel. Background Art

[0002] Conventionally, a display device including a display panel having a display screen such as a liquid crystal display is mounted on a vehicle and used to display various information (for example, see Patent Document 1). Patent Document 1 discloses a display device provided with an indicator area arranged around the display screen and including display lights provided as indicators, which emit light to display various information. It also discloses that a control circuit and a light source for the display screen are provided on the back side of the display screen.

[0003] Prior Art Documents

[0004] Patent Document 1: JP 2016-179715 A Summary of the Invention

[0005] Problems to be Solved by the Invention

[0006] In recent years, when the above-described display device is mounted on a vehicle, there is a case where the display device is mounted such that a part thereof protrudes from the instrument panel. In this case, in terms of appearance, it is preferable to at least thin the protruding part of the display device. However, such a display device in which various components are arranged on the back side of the display screen tends to become thick. Therefore, there is room for improvement in terms of appearance.

[0007] In view of the above drawbacks, an object of the present invention is to provide a display device that is at least partially thinned.

[0008] Technical Solution

[0009] To achieve the above object, in a first aspect of the present invention, there is provided a display device including: a display panel in which a display screen and an indicator area are two-dimensionally arranged; an indicator substrate on which a light source assembly is mounted, the indicator substrate being arranged on the back side of the display panel to face the indicator area and not face the display screen; and a control substrate, which is a component separate from the indicator substrate and on which a control circuit for the display screen is formed, the control substrate being arranged so as not to face at least a part of each of the display screen and the indicator substrate.

[0010] Advantageous Effects of the Invention

[0011] According to the above display device, at least a part of the display device can be thinned. Brief Description of the Drawings

[0012] Figure 1is a schematic view showing a state where a display device according to an embodiment is mounted on a vehicle;

[0013] Figure 2 is a schematic cross-sectional view taken along line V11-V11 in Figure 1 showing the mounting state of the display device of Figure 1 ;

[0014] Figure 3 is a view showing Figure 1 and Figure 2 front view and side view of the display device shown;

[0015] Figure 4 is Figure 3 schematic rear view of the display device shown;

[0016] Figure 5 is Figure 3 and Figure 4 schematic exploded perspective view of the display device shown;

[0017] Figure 6 is a view showing the arrangement of the indicator substrate and the control substrate inside the display device viewed from the display panel side of Figures 1 to 5 shown;

[0018] Figure 7 shows the arrangement of the indicator substrate and the control substrate in a schematic longitudinal section of the display device taken along line V12-V12 in Figure 6 ;

[0019] Figure 8 shows the arrangement of the indicator substrate and the control substrate in a schematic cross-section of the display device taken along line V13-V13 in Figure 6 ;

[0020] Figure 9 is a schematic perspective view showing the indicator area of the display panel;

[0021] Figure 10 is a schematic view of a display device of a first modification example in an orthogonal cross-section with respect to the display panel;

[0022] Figure 11 is a schematic view of a display device of a second modification example in an orthogonal cross-section with respect to the display panel;

[0023] Figure 12 is a schematic view showing an installation example of the display device of the second modification example installed in a vehicle;

[0024] Figure 13It is a perspective view of the device housing as viewed from the back of the device housing, showing how the rear cover is attached by sliding the rear cover to cover the back of the device housing;

[0025] Figure 14 It is Figure 13 An enlarged view of the area A11 shown;

[0026] Figure 15 It is a schematic view of the display device as viewed from the back side, showing Figure 5 How the ribs of the rear cover shown guide the sliding of the rear cover and how the fixing part of the rear cover is positioned relative to the fixed part of the device housing;

[0027] Figure 16 It shows a cross-section along the bottom surface of the groove, showing that the rib body of the left rib is received in the Figure 15 Left positioning track shown in the positioning tracks at the two positions shown; Figure 15 State within the left positioning track shown;

[0028] Figure 17 It is a cross-section along the bottom surface of the groove, showing that the rib body of the right rib is received in the Figure 15 Right positioning track shown in the positioning tracks at the two positions shown; Figure 15 State within the right positioning track shown;

[0029] Figure 18 It shows a longitudinal cross-section along the up and down direction in the vertical posture, showing how the engaging part of the rear cover engages with the engaged part of the display panel;

[0030] Figure 19 It is Figure 18 An enlarged view of the area A12 around the engaging part and the engaged part in ;

[0031] Figure 20 Similar to Figure 18 The longitudinal cross-section shows how the movement of the rear cover is restricted by the abutting part of the rear cover abutting against the abutted part of the display panel;

[0032] Figure 21 It is around the engaging part and the engaged part Figure 20 An enlarged view of the area A13 shown;

[0033] Figure 22 It is an enlarged perspective view of the engaging part and the abutting part that are adjacent to each other on the inner surface of the rear cover;

[0034] Figure 23 It is an enlarged cross-section along the left and right directions showing the engaging part, the engaged part, the abutting part, and the abutted part, showing Figure 22 The state where the engaging part of the rear cover shown engages with the engaged part of the display panel and the abutting part of the rear cover abuts against the abutted part of the display panel;

[0035] Figure 24 is an enlarged perspective view of the engaging portion provided on the inner surface of the rear cover and not adjacent to the abutting portion;

[0036] Figure 25 is an enlarged cross-sectional view taken along the left-right direction of the engaging portion and the engaged portion, showing Figure 24 the state in which the engaging portion of the rear cover shown is engaged with the engaged portion of the display panel;

[0037] Figure 26 is an exploded perspective view of the display device of the third modification example;

[0038] Figure 27 is a schematic view showing the first stage of mounting of the display panel;

[0039] Figure 28 is a schematic view showing the second stage of mounting of the display panel;

[0040] Figure 29 is showing Figure 27 and Figure 28 a schematic view of how the sliding movement of the display panel shown is guided by the guide holes of the receiving pins;

[0041] Figure 30 shows the engaging structure for the display panel and the device housing in a schematic cross-section taken along the line V41-V41 in Figure 28 ;

[0042] Figure 31 shows the engaging structure for the display panel and the device housing in a schematic cross-section taken along the line V42-V42 in Figure 28 ;

[0043] Figure 32 shows the positioning structure for positioning the display panel relative to the device housing as viewed from the display panel side;

[0044] Figure 33 shows the Figure 32 positioning structure as viewed from the device housing side; and

[0045] Figure 34 shows the Figure 32 positioning structure in a cross-section taken along the line V14-V14 of Figure 32 .

[0046] List of Reference Signs

[0047] 1, 2, 3, 4 Display device

[0048] 11, 21, 31, 41 Display panel

[0049] 11a Display side shielding portion

[0050] Outer concave portion of 11b

[0051] Device housings 12, 22, 42

[0052] Shielding portions 12a, 42a

[0053] Non - shielding portions 12b, 42b

[0054] Central axis 12c

[0055] Rear cover 13

[0056] Indicator substrates 14, 24, 34

[0057] Control substrates 15, 25, 35

[0058] First device housing 32 - 1

[0059] Second device housing 32 - 2

[0060] Connection cable 36

[0061] Liquid crystal screens (display screens) 111, 211, 311, 411

[0062] Indicator area 112

[0063] Indicator 112a

[0064] Diffusion portion 112b

[0065] Blocking portion 112c

[0066] Fixing flange 112d

[0067] Through - holes 112e, 115, 115a, 131a, 413a

[0068] Panel frame 113

[0069] Bolts 114, 114a, 132, 414

[0070] Eaves portion 116

[0071] Engaged portion 117

[0072] Engagement hole 117a

[0073] Engagement recess 117b

[0074] Abutted portion 118

[0075] Display - side positioning portion 119

[0076] Recess 119a

[0077] 119b and 135 ribs

[0078] 121 accommodation space

[0079] 122, 123a, and 422a screw holes

[0080] 123 and 422 fixed parts

[0081] 125 guiding ramp

[0082] 126 positioning track

[0083] 126L left inner surface

[0084] 126R right inner surface

[0085] 127 housing side positioning part

[0086] 127a abutting surface

[0087] 128 peripheral wall

[0088] 131 and 413 fixing parts

[0089] 133 engaging part

[0090] 133a claw rib

[0091] 133b and 134b connecting ribs

[0092] 134 abutting part

[0093] 134a abutting rib

[0094] 135a eaves-like rib

[0095] 135b rib body

[0096] 141 LED light source (light source component)

[0097] 321 first accommodation space

[0098] 324 second accommodation space

[0099] 412 guiding hole

[0100] 421 pin

[0101] 415 first engaging part

[0102] 416 second engaging part

[0103] 423 first engaged part

[0104] 424 second engaged part

[0105] Vehicles C11 and C31

[0106] Instrument panels C112 and C312

[0107] Left - right directions D11 and D41

[0108] Sliding directions D12 and D42

[0109] Up - down directions D13 and D23

[0110] Plan view direction D14

[0111] Insertion direction D15

[0112] Crossing direction D24

[0113] Depth L11

[0114] Length L12

[0115] Width dimension W11 Detailed implementation mode

[0116] Next, an embodiment of the display device will be described.

[0117] Figure 1 is a schematic diagram showing the state in which the display device according to an embodiment is installed on a vehicle, and Figure 2 shows Figure 1 the installation state of the display device in the schematic cross - section taken along the line V11 - V11 of Figure 1 the display device.

[0118] Figure 1 and Figure 2 The display device 1 shown is installed on the instrument panel C112, which is the installation part, in front of the driver's seat in the vehicle C11. In this embodiment, the display device 1 is installed on the instrument panel C112 in an upright posture with the part from the lower end side to the back side of the display device 1 embedded and hidden in the instrument panel C112.

[0119] Figure 3 is a view showing Figure 1 and Figure 2 the front view and side view of the display device shown, Figure 4 is Figure 3 the schematic rear view of the display device shown, and Figure 5 is Figure 3 and Figure 4 the schematic exploded perspective view of the display device shown.

[0120] Figures 3 to 5 The display device 1 shown includes a display panel 11, a device housing 12, a rear cover 13, an indicator substrate 14, and a control substrate 15.

[0121] The display panel 11 is a panel component in a two-dimensional arrangement of a liquid crystal screen 111 serving as a display screen and an indicator area 112 and held by a panel frame 113. The liquid crystal screen 111 is configured to display various meter images and various numerical values. The indicator area 112 is an area where a plurality of indicators 112a are arranged in a two-dimensional lattice pattern. Each indicator 112a is a display lamp configured to be lit by allowing the light of the LED light source 141 of the indicator substrate 14 to pass through, thereby displaying various information. The display panel 11 is mounted in an upright posture such that the liquid crystal screen 111 and the indicator area 112 are provided on the front side viewed by an observer. The indicator area 112 is arranged at a pair of left and right positions offset from the liquid crystal screen 111 in the left and right direction D11 with respect to the upright posture.

[0122] The device housing 12 is a flat-bottomed rectangular cylindrical housing that allows the display panel 11 to be disposed on the opening side of the device housing 12, and the device housing 12 and the display panel 11 together define an accommodation space 121 for the indicator substrate 14 and the control substrate 15. As Figure 1 and Figure 2 shown, in a state where a part of the device housing 12 from the peripheral wall on the lower end side to the back surface is hidden as a shielding portion 12a from the perspective of the observer of the display panel 11, the device housing 12 is mounted on the instrument panel C112 in an upright posture.

[0123] The display panel 11 is mounted to cover the opening of the device housing 12, and its lower end side is fixed to the device housing 12 by a plurality of bolts 114. The area for bolt fixing at the lower end side of the display panel 11 is a display-side shielding portion 11a, which is embedded and hidden in the instrument panel C112 together with the shielding portion 12a of the device housing 12, as Figure 1 and Figure 2As shown, a plurality of through holes 115 for bolt fixation are formed at a portion of the panel frame 113 corresponding to the display-side shielding portion 11a. In the device housing 12, a plurality of screw holes 122 for bolt fixation are formed at positions of the shielding portion 12a on the lower end side that are opposite to the through holes 115 of the display panel 11. The lower end side of the display panel 11 is fastened and fixed to the device housing 12 by bolts 114 that pass through the through holes 115 and are screwed into the screw holes 122. On the other hand, the upper end side of the display panel 11 includes an eaves portion 116 that extends toward the back side and extends above the peripheral wall of the upper end side of the device housing 12. The eaves portion 116 includes an engaged portion 117 and an abutted portion 118. The engaged portion 117 is formed at four positions that engage with the rear cover 13, and the abutted portion 118 is formed at two positions that abut against the rear cover 13 for positioning during assembly. The abutted portions 118 at the two positions are respectively arranged adjacent to and inside the engaged portions 117 at two end positions among the four engaged portions 117 arranged in a row.

[0124] The rear cover 13 is a component that is assembled to the device housing 12 to cover the back side of the device housing 12 opposite to the side where the display panel 11 is arranged. The device housing 12 includes an unshielded portion 12b that is arranged on the upper end side of the device housing 12 opposite to the shielding portion 12a with respect to the central axis 12c of the bottomed rectangular tubular device housing 12, and the rear cover 13 is assembled by sliding the rear cover 13 in the sliding direction D12 extending from the unshielded portion 12b to the shielding portion 12a. The rear cover 13 is a cover that is shaped such that the lower end side widens into a skirt shape and covers the upper side of the shielding portion 12a on the back side of the device housing 12. In addition, as Figure 1 and Figure 2 shown, the rear cover 13 is designed such that when the display device 1 is installed on the instrument panel C112, the rear cover 13 constitutes a continuous design with the instrument panel C112.

[0125] Fixed portions 123 are formed at four positions on the back surface of the shielding portion 12a of the device housing 12 opposite to the rear cover 13, and when the rear cover 13 is assembled to the device housing 12 by sliding the rear cover 13, the rear cover 13 is fixed to the fixed portions 123. Each fixed portion 123 is provided with a screw hole 123a. In addition, on the inner surface of the bottom portion widened in a skirt shape, the rear cover 13 includes fixed portions 131 at four positions that project inward such that their ends abut against the fixed portions 123 at four positions of the device housing 12. Each fixed portion 131 includes a through hole 131a for bolt fixation. The fixed portions 131 of the rear cover 13 are fastened and fixed to the fixed portions 123 of the device housing 12 by bolts 132 that pass through the through holes 131a and are screwed into the screw holes 123a.

[0126] In addition, engaging portions 133 are provided at four positions on a portion of the rear cover 13 corresponding to the non-shielding portion 12b of the device housing 12. The engaging portions 133 at the four positions are configured to engage with engaged portions 117 provided at four positions on the eaves portion 116 of the display panel 11 extending above the non-shielding portion 12b. Contact portions 134 configured to contact contact portions 118 provided on the eaves portion 116 are respectively arranged inside two of the engaging portions 133 at both ends among the four engaging portions 133 arranged in a row and are adjacent to the two engaging portions 133. Ribs 135 are provided at two positions on the inner surface of the rear cover 13. The ribs 135 are configured to guide the sliding of the rear cover 13 in the sliding direction D12 and position the fixing portion 131 of the rear cover 13 relative to the fixed portion 123 of the device housing 12 while the rear cover 13 is being attached to the device housing 12.

[0127] The indicator substrate 14 is a trapezoidal plate-shaped substrate on which a plurality of LED light sources 141 as light source components are mounted. Two indicator substrates 14 are arranged inside the device housing 12 so as to face the indicator area 112 on the back side of the display panel 11. Each indicator substrate 14 has a right trapezoidal plate shape, in which the lengths of the upper base and the lower base of the trapezoid are greater than the height of the trapezoid, and one side connecting the upper base and the lower base is the hypotenuse, and the other side is perpendicular to the upper base and the lower base. The indicator substrate 14 is arranged in an upright posture with its hypotenuse facing the non-shielding portion 12b of the device housing 12.

[0128] The control substrate 15 is a rectangular substrate, which is a component separate from the indicator substrate 14, and a control circuit for the liquid crystal screen 111 is formed on the rectangular substrate. One control substrate 15 is arranged at a position inside the device housing 12 that is more on the back side than the indicator substrate 14 when viewed from the display panel 11. In the present embodiment, the control substrate 15 is used to perform overall control of the display device 1, and the overall control includes control of the liquid crystal screen 111 and control of the indicator substrate 14. The control substrate 15 is arranged on the side of the shielding portion 12a inside the device housing 12 and is set in a horizontal posture such that the long side of the rectangle is arranged along the left-right direction D11 in the upright posture.

[0129] Figure 6 is a schematic perspective view showing the arrangement of the indicator substrate and the control substrate inside the display device as viewed from the display panel side Figures 1 to 5 shown in Figure 7 shows the arrangement of the indicator substrate and the control substrate in a schematic longitudinal section of the display device taken along the line V12-V12 in Figure 6 Figure 8 shows the arrangement of the indicator substrate and the control substrate in a schematic longitudinal section of the display device taken along the line V12-V12 in Figure 6 ​The arrangement of the indicator substrate and the control substrate in the schematic cross-section of the display device taken along the line V13-V13. In Figures 6 to 8 the rear cover 13 is not shown.

[0130] As Figures 6 to 8 shown, on the back side of the display panel 11, the control substrate 15 of the display device 1 is arranged further away from the display panel 11 than the indicator substrate 14, and is arranged not to face a part of each of the liquid crystal screen 111 and the indicator substrate 14. Specifically, the control substrate 15 is arranged not to face a part of each of the liquid crystal screen 111 and the indicator substrate 14 on the upper end side with respect to the vertical up-and-down direction D13 in the vertical standing posture. Due to this arrangement, on the upper end side of the device housing 12 in the up-and-down direction D13, that is, in the non-shielded portion 12b, only the indicator substrate 14 which is closer to the liquid crystal screen 111 than the control substrate 15 exists inside the device housing 12. Thus, the device housing 12 is formed in a stepped shape in the up-and-down direction, where the non-shielded portion 12b is thinner than the lower end side in the up-and-down direction D13, that is, the shielded portion 12a side.

[0131] Furthermore, as Figure 3 and Figure 5 shown, the rear cover 13 is formed in a tapered shape that gradually thins upward in a side view, so as to conform to the stepped shape of the device housing 12 where the non-shielded portion 12b on the upper end side is thinner.

[0132] On the other hand, inside the device housing 12, the lower end side of the indicator substrate 14 faces the control substrate 15. In the present embodiment, the control substrate 15 is configured to control not only the liquid crystal screen 111 but also the indicator substrate 14. To perform such control, the indicator substrate 14 and the control substrate 15 are connected to each other by a connector at their relative portions (i.e., connected via a connector connection). In the present embodiment, in the display panel 11, the indicator region 112 displays information by receiving light from the LED light source 141 of the indicator substrate 14 which is configured to be turned on and off under the control of the control substrate 15, and the indicator region 112 is configured as described below.

[0133] Figure 9 is a schematic perspective view showing the indicator region of the display panel.

[0134] Figure 9 shows the left indicator region 112 among the pair of left and right indicator regions 112 of the display panel 11. As Figure 9As shown, the indicator area 112 is provided with a diffusing portion 112b and a blocking portion 112c. The diffusing portion 112b is formed by a group of indicators 112a arranged in a two-dimensional lattice pattern, and the diffusing portion 112b diffuses the light from the LED light source 141 while allowing the light to pass through. The blocking portion 112c is a portion formed to surround the diffusing portion 112b to block various stray lights, and includes a fixing flange 112d for fixing the indicator area 112 to the panel frame 113. The fixing flange 112d of the blocking portion 112c includes a plurality of through holes 112e for bolt fixing. In the present embodiment, in the indicator area 112, the diffusing portion 112b and the blocking portion 112c are integrally formed by two-color molding using a milky white resin that diffuses light and an opaque resin that blocks light.

[0135] According to the above substrate structure of the display device 1 of the present embodiment, the following advantageous effects can be provided.

[0136] That is, according to the above display device 1, the control substrate 15 and the indicator substrate 14 corresponding to the liquid crystal screen 111 and the indicator area 112 arranged two-dimensionally on the display panel 11 are provided separately from each other. In addition, the control substrate 15 positioned at a position farther from the display panel 11 than the indicator substrate 14 is arranged so as not to face a part of each of the liquid crystal screen 111 and the indicator substrate 14. Thus, for the area of the non-shielding portion 12b where the control substrate 15 does not face each of the liquid crystal screen 111 and the indicator substrate 14, the thickness is not increased due to the control substrate 15, and therefore the thickness of the display device 1 can be reduced. That is, according to the present embodiment, the thickness of at least a part of the display device 1 can be reduced.

[0137] In the present embodiment, the display panel 11 is configured to be mounted in an upright posture, and the indicator area 112 of the display panel 11 is arranged at a position offset from the liquid crystal screen 111 in the left-right direction D11 with respect to the upright posture. In addition, the control substrate 15 is arranged so as not to face a part of the upper end side in the up-down direction D13 with respect to the upright posture of each of the liquid crystal screen 111 and the indicator substrate 14. According to this structure, for the display device 1 in the upright posture, the thickness of the part of the upper end side of each of the liquid crystal screen 111 and the indicator substrate 14 that the control substrate 15 does not face can be reduced as Figure 7 shown. In the present embodiment, the area of the upper end side that can be made thinner can be used as a convex portion when a part of the display device 1 protrudes from the instrument panel C112 as Figure 1 and Figure 2 shown. That is, according to the above configuration, the appearance of the display device 1 in the protruding arrangement as described above can be improved.

[0138] In addition, in the present embodiment, the indicator substrate 14 and the control substrate 15 are connected to each other by a connector. According to this structure, compared with the case where the indicator substrate 14 and the control substrate 15 are connected by a cable (i.e., connected by a cable connection), the space required for substrate connection can be reduced, and this is preferable.

[0139] In addition, in the present embodiment, the display device 1 includes a device housing 12, and the device housing 12 together with the display panel 11 defines an accommodation space 121 for the indicator substrate 14 and the control substrate 15. According to this configuration, the indicator substrate 14 and the control substrate 15 are accommodated together in the device housing 12, so that the number of components related to the housing can be reduced, and this is preferable.

[0140] In addition, in the present embodiment, for the indicator region 112 in the display panel 11, the light from the LED light source 141 is integrally formed by two-color molding through a diffusion portion 112b that diffuses and transmits the light and a blocking portion 112c that surrounds the diffusion portion 112b to block the light. According to this structure, compared with the case where the diffusion portion 112b and the blocking portion 112c are formed as separate components, light leakage and brightness unevenness in the indicator region 112 can be suppressed, so that the thickness of the display device 1 including the indicator region 112, that is, the display panel 11, can be further reduced, and this is preferable.

[0141] We suspend the description of the display device 1 of the embodiment shown Figures 1 to 9 and will describe several modification examples of the present embodiment.

[0142] Figure 10 is a schematic view showing a display device of the first modification example in an orthogonal cross-section with respect to the display panel.

[0143] In the display device 2 of the first modification example, the control substrate 25 is arranged so as not to face either the liquid crystal screen 211 of the display panel 21 or the indicator substrate 24 at all. Specifically, the control substrate 25 is arranged on the lower end side of the indicator substrate 24 with respect to the up-and-down direction D23 of the vertical posture, so that the control substrate 25 is arranged along the cross direction D24 with respect to the indicator substrate 24. With this substrate arrangement, the indicator substrate 24 and the control substrate 25 form an L shape in the cross-sectional view as Figure 10 shown, and the device housing 22 that accommodates the indicator substrate 24 and the control substrate 25 is also an L-shaped housing. In addition, in this first modification example, the indicator substrate 24 and the control substrate 25 are connected to each other by a connector.

[0144] In the structure of the first modification example described above, the thickness of at least a part of the display device 2 can be reduced in the same manner as in the case of the above embodiment.

[0145] In addition, according to the configuration of the first modification example, neither the liquid crystal screen 211 of the display panel 21 in the vertical posture nor the indicator substrate 24 faces the control substrate 25 at all. Therefore, the thickness corresponding to the entire portion of the display panel 21 can be reduced.

[0146] Figure 11 FIG. is a schematic view showing a display device according to a second modification example in an orthogonal cross-section with respect to the display panel.

[0147] The display device 3 according to the second modification example includes two housings, namely, a first device housing 32-1 and a second device housing 32-2. The first device housing 32-1 is a flat-bottomed square tubular housing, which together with the display panel 31 defines a first accommodation space 321 for accommodating the indicator substrate 34. The second device housing 32-2 is a flat-bottomed square tubular housing, which is arranged on the back side of the first device housing 32-1 and defines a second accommodation space 324 for accommodating the control substrate 35.

[0148] In the second modification example, different from the above-described embodiment and the first modification example, the indicator substrate 34 is a self-controlled substrate, which is equipped with a control circuit for switching control of the installed light source. In addition, the control substrate 35 is a dedicated substrate that only controls the liquid crystal screen 311 of the display panel 31. Further, in this second modification example, the display device 3 includes a connection cable 36, which electrically connects the liquid crystal screen 311 of the display panel 31 that defines the first accommodation space 321 to the control substrate 35 accommodated in the second accommodation space 324.

[0149] Figure 12 FIG. is a schematic view showing an installation example of installing the display device according to the second modification example in a vehicle.

[0150] In Figure 12 In the shown installation example, the display device 3 is arranged in front of the driver's seat of the vehicle C31 in a state where the display panel 31 seems to be floating. In this installation example, the second device housing 32-2 that accommodates the control substrate 35 supports the first device housing 32-1 from the back side. The first device housing 32-1 accommodates the indicator substrate 34 and the display panel 31 is fixed to the first device housing 32-1. That is, one end edge of the second device housing 32-2 is fixed to the back surface of the first device housing 32-1, and the other end edge of the second device housing 32-2 is embedded and fixed to the instrument panel C312 as the installation site. The connection cable 36 is connected from the control substrate 35 to the liquid crystal screen 311 through the engaging portion of the first device housing 32-1 and the second device housing 32-2.

[0151] In the structure of the second modification example described above, similar to the case of the above-described embodiment, the thickness of at least a part of the display device 3 can also be reduced.

[0152] In addition, according to the configuration of the second modification example, the control substrate 35 is accommodated in the second device housing 32-2, which is a component separate from the first device housing 32-1. The first device housing 32-1 and the display panel 31 viewed by the observer together define an accommodation space for the indicator substrate 34. According to this configuration in which the housing is formed as a separate component, the overall thickness of the housing viewed by the observer can be reduced.

[0153] In addition, the second modification example is also provided with a connection cable 36 that electrically connects the indicator substrate 34 accommodated in the first accommodation space 321 and the control substrate 35 accommodated in the second accommodation space 324. According to this configuration, the degree of freedom in the mounting design of the display device 3 can be improved, so that in addition to Figure 12 the mounting example shown, for example, the first device housing 32-1 and the second device housing 32-2 can also be placed apart from each other.

[0154] The description of the first modification example and the second modification example ends here. Now we return to Figures 1 to 9 the description of the embodiment shown.

[0155] As schematically shown in Figures 3 to 5 , in the display device 1 of the present embodiment, the rear cover 13 is attached by sliding the rear cover 13 to cover the back side of the device housing 12. The fixed portions 123 at four positions are formed on the back surface of the device housing 12, and the fixing portions 131 at four positions are formed on the rear cover 13.

[0156] Figure 13 is a perspective view of the device housing viewed from the back side, showing how the rear cover is attached by sliding the rear cover to cover the back side of the device housing. Figure 14 is Figure 13 an enlarged view of the area A11 shown.

[0157] Similarly, in the display device 1 of the present embodiment, the rear cover 13 is attached so as to cover the back side of the side of the device housing 12 that is arranged relative to the display panel 11. The rear cover 13 is attached by sliding in the sliding direction D12 from the non-shielded portion 12b on the upper end side of the device housing 12 in the vertically standing posture toward the shielding portion 12a on the lower end side. That is, in the present embodiment, the rear cover 13 corresponds to the sliding attachment portion that is attached to the device housing 12 by sliding. The structure composed of the display panel 11 and the device housing 12 corresponds to the sliding accommodation portion that includes the device housing 12 but does not include the sliding attachment portion.

[0158] For the rear cover 13, the through holes 131a of the fixing portions 131 at the four positions are moved so as to slide to positions where they overlap with the screw holes 123a of the fixed portions 123 provided at the four positions on the back surface of the shielding portion 12a of the device housing 12. As Figure 14 shown, the fixed portion 123 is formed as a boss protruding in a columnar shape, and the inside of the boss is a screw hole 123a. A guiding ramp 125 is provided on the back surface of the device housing 12 serving as a sliding receiving portion, one guiding ramp 125 is provided for each fixed portion 123, and the guiding ramp 125 is configured to guide the fixing portion 131 to the end face of the boss serving as the fixed portion 123 during the attachment of the rear cover 13 serving as a sliding attachment portion. The guiding ramp 125 is a ramp portion arranged adjacent to the boss serving as the fixed portion 123, the guiding ramp 125 extends toward the end face where the screw hole 123a of the boss opens in the sliding direction D12, and the height of the guiding ramp 125 gradually increases along the sliding direction D12.

[0159] In addition, as briefly described in the reference Figure 5 , ribs 135 are provided at two positions on the inner surface of the rear cover 13, and the ribs 135 at the two positions are configured to position the fixing portion 131 of the rear cover 13 relative to the fixed portion 123 of the device housing 12 while guiding the sliding in the sliding direction D12. Hereinafter, the structure of the ribs 135 will be described in detail.

[0160] Figure 15 is a schematic view of the display device viewed from the back side, showing Figure 5 how the ribs of the rear cover shown guide the sliding of the rear cover and how to position the fixing portion of the rear cover relative to the fixed portion of the device housing.

[0161] As Figure 5 and Figure 15 shown, the rib 135 includes an eaves-shaped rib 135a and a rib body 135b. The eaves-shaped rib 135a protrudes from the inner surface of the rear cover 13 in a U shape in a front view, and the rib body 135b is formed to extend in the sliding direction D12 from the outer bottom surface of the eaves-shaped rib 135a. The ribs 135 are provided at both ends in the left-right direction D11 close to the inner surface of the rear cover 13 and at positions outside the fixing portions 131 arranged in a row at four positions.

[0162] On the other hand, a positioning rail 126 for receiving the rib body 135b of the receiving rib 135 is provided on the back surface of the device housing 12. The positioning rails 126 are formed at two positions on the boundary between the thin portion of the non-shielding portion 12b on the upper end side and the thick portion on the shielding portion 12a side below the thin portion. Each positioning rail 126 extends along the sliding direction D12 to receive the rib body 135b during the attachment of the rear cover 13, thereby positioning the fixing portion 131 of the rear cover 13 relative to the portion to be fixed 123. Each positioning rail 126 is a groove portion that opens in such a manner that the groove portion opens wider on the side that receives the rib body 135b during the attachment of the rear cover 13 of the display device 1 than the rest of the groove portion. In addition, the positioning rails 126 at the two positions are provided at both ends in the left-right direction D11 near the back surface of the device housing 12 and are located outside the portions to be fixed 123 at four positions arranged in a row.

[0163] Figure 16 Shows a cross-section along the bottom surface of the groove, showing the rib body of the left rib being received in Figure 15 One of the positioning rails at the two positions shown Figure 15 The state of being received in the left positioning rail shown. In addition, Figure 17 Is a cross-section along the bottom surface of the groove, showing the rib body of the right rib being received in Figure 15 One of the positioning rails at the two positions shown Figure 15 The state of being received in the right positioning rail shown.

[0164] As Figures 15 to 17 Shown, the rib body 135b of the left rib 135 is received so as to abut against the left inner surface 126L of a pair of opposing inner surfaces of the left positioning rail 126. On the other hand, the rib body 135b of the right rib 135 is received so as to abut against the right inner surface 126R of a pair of inner surfaces of the right positioning rail 126. With this receiving structure, the rear cover 13 slides along the sliding direction D12 in a state where its relative position in the left-right direction D11 with respect to the device housing 12 is uniquely positioned. Both the rear cover 13 and the device housing 12 include a fixing portion 131 and a portion to be fixed 123, which are formed at positions corresponding to this unique relative positional relationship. As a result, when the rear cover 13 moves and slides in a state where the rib bodies 135b of the left and right ribs 135 are received in the left and right positioning rails 126, the fixing portion 131 is positioned relative to the portion to be fixed 123. More specifically, the through hole 131a of the fixing portion 131 is positioned to communicate with the screw hole 123a of the portion to be fixed 123.

[0165] In the present embodiment, as Figure 15As shown, the rear cover 13 as the sliding connection part is connected to the structural connection part as the sliding accommodation part, and in this sliding accommodation part, the display panel 11 is connected to the device housing 12. In this sliding accommodation part, the eaves part 116 formed at the upper end side of the back surface of the display panel 11 extends above the peripheral wall at the upper end side of the device housing 12. In addition, as briefly described in Figure 5 The eaves part 116 is provided with engaged parts 117 at four positions that engage with the rear cover 13 and abutted parts 118 at two positions that abut against the rear cover 13. In addition, at the upper end side of the rear cover 13, engaging parts 133 at four positions and abutting parts 134 at two positions are provided. The engaging parts 133 at four positions engage with the engaged parts 117 at four positions provided on the eaves part 116 of the display panel 11, and the abutting parts 134 at two positions abut against the abutted parts 118.

[0166] Figure 18 A longitudinal section along the up-down direction in the vertical posture is shown, showing how the engaging part of the rear cover engages with the engaged part of the display panel. Figure 19 is Figure 18 An enlarged view of the area A12 around the engaging part and the engaged part in

[0167] As Figure 18 shown, when assembling the display device 1, as the rear cover 13 slides along the sliding direction D12, at the lower end side in the up-down direction D13, the through hole 131a of the fixing part 131 communicates with the screw hole 123a of the fixed part 123 of the device housing 12. On the other hand, at the upper end side, the engaging part 133 engages with the engaged part 117 provided on the eaves part 116 of the display panel 11, as shown in Figure 18 and Figure 19 shown. The engaged part 117 of the display panel 11 is a small area on the eaves part 116 provided with an engaging hole 117a or an engaging recess 117b. As described above, the eaves part 116 of the display panel 11 is provided with engaged parts 117 at four positions arranged in a row in the left-right direction D11. Among the engaged parts 117 at the four positions, the engaged parts 117 at the two positions at both ends are provided with engaging recesses 117b, and the engaged parts 117 at the two positions near the center are provided with engaging holes 117a. The engaged part 117 provided with the engaging hole 117a is as shown in Figure 18 and Figure 19 shown, and the engaging recess 117b is as shown in Figure 23 described later.

[0168] The engaging portion 133 on the rear cover 13 is an engaging claw configured to fit into the engaging hole 117a or the engaging recess 117b and engage with the engaging hole 117a or the engaging recess 117b. The engaging claw serving as the engaging portion 133 is formed such that the cross-sectional shape of the longitudinal section along the sliding direction D12 and intersecting the rear cover 13 is a tapered shape that gradually tapers towards the end. On the other hand, the shape of the engaging claw serving as the engaging portion 133 when viewed from the planar direction D14 with respect to the rear cover 13 is a press-fit shape that will be described later with reference to Figure 23 and Figure 24 the description of the press-fit shape.

[0169] In the present embodiment, when the rear cover 13 reaches the mounting position where the fixing portion 131 and the portion to be fixed 123 overlap such that the through hole 131a and the screw hole 123a communicate with each other, the movement of the rear cover 13 is restricted. The restriction of this movement is performed by the abutting portion 134 of the rear cover 13 abutting against the portion to be abutted 118 of the display panel 11.

[0170] Figure 20 Similar to Figure 18 the longitudinal section shows how the movement of the rear cover is restricted by the abutting portion of the rear cover abutting against the portion to be abutted of the display panel, and Figure 21 is an enlarged view of the area A13 shown Figure 20 around the engaging portion and the engaged portion.

[0171] The portion to be abutted 118 of the display panel 11 in the display device 1 is the portion against which the abutting portion 134 abuts when the rear cover 13 reaches the mounting position, at which the fixing portion 131 and the portion to be fixed 123 overlap such that the through hole 131a and the screw hole 123a communicate with each other. By causing the abutting portion 134 to abut against the portion to be abutted 118, the portion to be abutted 118 restricts the movement of the rear cover 13 beyond the above-mentioned mounting position. This restriction of movement maintains the communication between the through hole 131a and the screw hole 123a. The portion to be abutted 118 is a small area on the eaves portion 116 of the display panel 11 against which the abutting portion 134 abuts. On the other hand, the abutting portion 134 of the rear cover 13 is a convex portion that protrudes from the inner surface on the upper end side of the rear cover 13 along the sliding direction D12 and protrudes by an amount such that the rear cover 13 abuts against the portion to be abutted 118 of the eaves portion 116 when the rear cover 13 reaches the above-mentioned mounting position.

[0172] Furthermore, in the present embodiment, the portion to be abutted 118 is provided adjacent to the engaged portion 117 in the eaves portion 116 of the display panel 11. In addition, on the inner surface of the rear cover 13, the abutting portion 134 is provided adjacent to the engaging portion 133.

[0173] First, as Figure 5As shown, on the upper end side of the inner surface of the rear cover 13 corresponding to the non-shielded portion 12b of the device housing 12, engaging portions 133 are provided at four positions arranged in a row in the left-right direction D11. The abutting portion 134 of the rear cover 13 is provided at two positions adjacent to the inner sides of the two engaging portions 133 at both ends among the four-position engaging portions 133 respectively.

[0174] Figure 22 It is an enlarged perspective view of the engaging portion and the abutting portion provided adjacent to each other on the inner surface of the rear cover. Figure 22 The enlarged area shown corresponds to the corner portion at the upper right end side of the rear cover 13 in the left-right direction D11 when viewing the rear cover 13 from the display panel 11 side.

[0175] As Figure 22 shown, the engaging portion 133 of the rear cover 13 includes a pair of claw ribs 133a and a connecting rib 133b. The pair of claw ribs 133a are rib portions that each have Figure 19 the tapered shape shown and are arranged facing each other in the left-right direction D11. In addition, the connecting rib 133b is a rib portion that connects the pair of claw ribs 133a in the left-right direction D11 on the back side of the rear cover 13. The adjacent abutting portion 134 at the inner side with respect to the engaging portion 133 has a similar shape and thus includes a pair of abutting ribs 134a and a connecting rib 134b. The pair of abutting ribs 134a are rib portions arranged to face each other in the left-right direction D11, and each rib portion projects by the amount of protrusion of the portion to be abutted 118 of the display panel 11 when it is in the mounting position described in Figure 18 and Figure 20 the reference. In addition, the connecting rib 134b is a rib portion that connects the pair of abutting ribs 134a in the left-right direction D11 on the back side of the rear cover 13.

[0176] Figure 23 It is an enlarged cross-section along the left-right direction showing the engaging portion, the engaged portion, the abutting portion, and the portion to be abutted, showing Figure 22 the state in which the engaging portion of the rear cover shown is engaged with the engaged portion of the display panel and the abutting portion of the rear cover abuts against the portion to be abutted of the display panel.

[0177] As Figure 23As shown, when the rear cover 13 reaches the above-mentioned mounting position, the engaging portion 133 of the rear cover 13 engages with the engaged portion 117 of the eaves portion 116 of the display panel 11, and the abutting portion 134 abuts against the abutted portion 118. Therefore, the sliding of the rear cover 13 stops. At this time, the engaged portion 117 provided adjacent to the abutted portion 118 on the eaves portion 116 of the display panel 11 becomes a bag-shaped portion provided with an engaging recess 117a. The width dimension W11 of the engaging claw as the engaging portion 133 when viewed from the plan view direction D14 with respect to the rear cover 13 is the dimension in which the engaging claw is press-fitted into the engaging recess. This press-fitting uniquely determines the position of the rear cover 13 in the left-right direction D11 with respect to the sliding receiving portion of the combination of the display panel 11 and the device housing 12. Therefore, the fixing portion 131 of the rear cover 13 is positioned in the left-right direction D11 with respect to the fixed portion 123 of the device housing 12. For the two engaging portions 133 among the four engaging portions 133 that are close to the center and not adjacent to the abutting portion 134, such positioning by the press-fitting of the engaging portion 133 is similarly performed.

[0178] Figure 24 It is an enlarged perspective view of the engaging portion provided on the inner surface of the rear cover and not adjacent to the abutting portion. In addition, Figure 25 It is an enlarged cross-sectional view along the left-right direction showing the engaging portion and the engaged portion, showing Figure 24 the state in which the engaging portion of the rear cover shown engages with the engaged portion of the display panel.

[0179] The engaging portion 133 provided at a position near the center in the left-right direction D11 on the inner surface of the rear cover 13 and not adjacent to the abutting portion 134 has a shape similar to that of the engaging portion 133 at both ends and adjacent to the abutting portion 134. That is, the engaging portion 133 has a shape including a pair of claw ribs 133a and a connecting rib 133b. On the contrary, different from the engaging portions 117 at both ends, the engaged portion 117 provided at a position near the center in the left-right direction D11 on the eaves portion 116 of the display panel 11 and not adjacent to the abutted portion 118 is provided with an engaging hole 117b penetrating the eaves portion 116. The engaging claw of the engaging portion 133 near the center has a width dimension W11 when viewed from the plan view direction D14, and this width dimension W11 is the dimension in which the engaging claw is press-fitted into the engaging hole 117b of the engaged portion 117. Such press-fitting near the center also contributes to the positioning of the fixing portion 131 of the rear cover 13 with respect to the fixed portion 123 of the device housing 12 during the mounting of the rear cover 13.

[0180] The above-mentioned mounting structure of the rear cover 13 of the display device 1 in this embodiment can provide the following advantageous effects.

[0181] That is, according to the above display device 1, the rear cover 13 serving as the sliding attachment part is attached to the sliding accommodation part including the device housing 12 by sliding in the sliding direction D12 from the non-shielding part 12b of the device housing 12 to the shielding part 12a. In addition, the rear cover 13 is fixed by the engagement of the non-shielding part 12b and the fixation of the shielding part 12a. In the non-shielding part 12b of the device housing 12, the engaging part 133 of the rear cover 13 is simply engaged with the engaged part 117 of the display panel 11, and the display panel 11 and the device housing 12 together form the sliding accommodation part, so that no fixing components such as bolts are exposed on its outer periphery. On the other hand, the fixing of the fixing part 131 of the rear cover 13 to the fixed part 123 of the device housing 12 is performed in the shielding part 12a of the device housing 12. Therefore, even when such fixing is performed with bolts 132, these bolts 132 will be hidden from the observer of the liquid crystal screen 111 during installation. Therefore, according to the above display device 1, by adopting sliding, engagement and fixation in the shielding part 12a, it is possible to improve the appearance without installing a cover for hiding the above-mentioned fixing components exposed on the outer periphery. In addition, since a cover is not required during installation, the degree of freedom of the attachment position can be increased, and the design during installation can also be improved.

[0182] In the present embodiment, the screw hole 123a is provided in the fixed part 123 of the device housing 12. On the other hand, the fixing part 131 of the rear cover 13 is a part that protrudes to overlap with the fixed part 123, and a through hole 131a for bolt fixing is provided at a position communicating with the screw hole 123a. According to this structure, the shielding part 12a is fixed by screwing the bolt 132 into the screw hole 123a of the fixed part 123 of the device housing 12 through the through hole 131a of the fixing part 131 of the rear cover 13. Therefore, according to the above structure, when it is desired to hide the shielding part 12a during installation, bolts 132, which are common fixing components and are easy to use, are adopted, so that the fixing strength can be improved and the operability can be improved.

[0183] In the present embodiment, the fixed part 123 is a boss protruding in a columnar shape and includes the screw hole 123a. In addition, the device housing 12 is provided with a guiding ramp 125, which is provided adjacent to the boss and is configured to guide the fixing part 131 to the end face of the boss during the attachment of the rear cover 13. The guiding ramp 125 is a ramp that extends in the sliding direction D12 toward the end face of the boss where the screw hole 123a of the boss is opened, and has a height that gradually increases with respect to the sliding direction D12. According to this structure, when the rear cover 13 is attached, the fixing part 131 is smoothly guided to the end face of the boss serving as the fixed part 123 by the guiding ramp 125 of the device housing 12. This guiding by the guiding ramp 125 can further improve the operability regarding the attachment of the rear cover 13.

[0184] In addition, in the present embodiment, an engaging recess 117a or an engaging hole 117b is provided in the engaged portion 117 of the display panel 11 that constitutes the sliding housing portion. The engaging portion 133 on the rear cover 13 is an engaging claw, and the engaging claw is configured to be fitted into the engaging recess 117a or the engaging hole 117b and engage with the engaging recess 117a or the engaging hole 117b. According to this structure, by fitting the engaging claw, which is the engaging portion 133, into the engaging recess 117a or the engaging hole 117b in the engaged portion 117, for the non-shielding portion 12b, it is possible to effectively prevent a situation where the rear cover 13 accidentally detaches from the device housing 12.

[0185] In addition, in the present embodiment, the engaging claw, which is the engaging portion 133, is formed such that the cross-sectional shape along the sliding direction D12 and intersecting the rear cover 13 is a tapered shape that gradually tapers toward the end. According to this configuration, as the rear cover 13 slides, the engaging claw having a tapered shape smoothly fits into the engaging recess 117a or the engaging hole 117b of the display panel 11, and thus the operability of attaching the rear cover 13 can be further improved.

[0186] In addition, in the present embodiment, the width dimension W11 of the engaging claw, which is the engaging portion 133, when viewed from the planar direction D14 with respect to the rear cover 13 is the dimension for press-fitting the engaging claw into the engaging recess 117a or the engaging hole 117b. Through this press-fitting, the fixing portion 131 of the rear cover 13 is positioned with respect to the fixed portion 123 of the device housing 12. According to this structure, the press-fitting of the engaging claw can suppress loosening of the engagement and can suppress abnormal noise caused by repeated component collisions in the engaging portion due to driving vibration, for example, in a usage state where the display device is mounted on the vehicle C11.

[0187] In addition, in this embodiment, the display panel 11 that forms the sliding housing portion is provided with an abutting portion 118, and during the attachment of the rear cover 13, when the rear cover 13 moves to the attachment position where the fixing portion 131 and the fixed portion 123 overlap, the rear cover 13 abuts against the abutting portion 118. In addition, the rear cover 13 is provided with an abutting portion 134, and when the rear cover 13 reaches the above-mentioned attachment position, the abutting portion 134 abuts against the abutting portion 118. The abutment of the abutting portion 134 with respect to the abutting portion 118 restricts the movement of the rear cover 13 beyond the above-mentioned attachment position. According to this structure, by making the abutting portion 134 of the rear cover 13 abut against the abutting portion 118 of the display panel 11 to restrict the movement of the rear cover 13, the fixing portion 131 is positioned with respect to the fixed portion 123 in the sliding direction D12. This positioning can further improve the operability of attaching the rear cover 13.

[0188] In addition, in the present embodiment, the abutted portion 118 is disposed adjacent to the engaged portion 117 in the display panel 11, and the abutting portion 134 is disposed adjacent to the engaging portion 133 in the rear cover 13. According to this structure, through the engagement of the engaging portion 133 and the engaged portion 117, the abutting portion 134 disposed adjacent to the engaging portion 133 can successfully abut against the abutted portion 118 disposed adjacent to the engaged portion 117 without displacement or the like.

[0189] In addition, in the present embodiment, the rear cover 13 is provided with a rib 135 that is formed to extend along the sliding direction D12. In addition, the device housing 12 is provided with a positioning rail 126 that extends along the sliding direction D12 and is configured to receive the rib 135 during the attachment of the rear cover 13 to position the fixing portion 131 relative to the fixed portion 123. According to this configuration, by sliding the rear cover 13 such that the rib 135 of the rear cover 13 is received in the positioning rail 126 of the device housing 12, the fixing portion 131 can be successfully positioned relative to the fixed portion 123.

[0190] In addition, in this embodiment, the positioning rail 126 of the device housing 12 is a groove portion that is open such that the side that receives the rib 135 during the attachment of the rear cover 13 is more open than the rest of the groove portion. According to this structure, during the attachment of the rear cover 13, the rib 135 can smoothly enter the positioning rail 126.

[0191] In addition, in the present embodiment, the sliding attachment portion is the rear cover 13 that is configured to be attached to cover the back side of the device housing 12. According to this configuration, the rear cover 13 as the sliding attachment portion can be attached such that the fixing bolt 132 is not visible to the observer of the liquid crystal screen 111, thereby improving the appearance of the display device 1 including the rear cover 13.

[0192] We pause the description of the display device 1 of the Figures 1 to 9 and Figures 13 to 25 illustrated embodiment, and will describe a third modification different from the first and second modifications illustrated in Figures 10 to 12 FIGS.

[0193] Figure 26 is an exploded perspective view of the display device of the third modification.

[0194] In the display device 4 of the third modification, the display panel 41 as the sliding attachment portion including the liquid crystal screen 411 is attached to the device housing 42 to cover the side of the device housing 42 where the liquid crystal screen 411 is disposed. In this third modification, no rear cover is provided, and the device housing 42 corresponds to the sliding receiving portion.

[0195] In this modified example, the display panel 41 is attached to the device housing 42 by sliding from a shielding portion 42a located at the lower end side of the device housing 42 in a vertically standing posture to an unshielded portion 42b located at the upper end side of the device housing 42 in the sliding direction D42. In this modified example, the following structure for guiding this sliding is provided. First, the device housing 42 is provided with a pin 421 protruding toward the display panel 41. In addition, the display panel 41 is provided with a guide hole 412, which is formed in a long hole shape extending along the sliding direction D42 and is configured to receive the pin 421 during the attachment of the display panel 41 to guide the sliding movement of the display panel 41.

[0196] The pin 421 is provided in the shielding portion 42a at the lower end side of the device housing 42. In addition, the shielding portion 42a is provided with a boss as a fixed portion 422 of the device housing 42, which is configured to fix the display panel 41 using bolts, and the boss is arranged in four positions in a row in the left-right direction D41 together with the pin 421, the boss protrudes in a columnar shape and includes a screw hole 422a.

[0197] The guide hole 412 is formed in the area at the lower end side of the display panel 41, which overlaps with the shielding portion 42a of the device housing 42 and is hidden together with the shielding portion 42a of the device housing 42 when the device housing 42 is mounted to the instrument panel C112 in a vertically standing posture as shown. In addition, the area at the lower end side is provided with fixing portions 413 at four positions, the fixing portions 413 at the four positions are configured to be fixed to the fixed portion 422 of the device housing 42, and are arranged in a row in the left-right direction D41 together with the guide hole 412. Each fixing portion 413 is a small area in the area at the lower end side of the display panel 41 where a through hole 413a for bolt fixing is formed. Figure 1 The display panel 41 is attached to the device housing 42 through the following stages.

[0198] The display panel 41 is attached to the device housing 42 through the following stages.

[0199] Figure 27 is a schematic view showing the first stage of attaching the display panel, and Figure 28 is a schematic view showing the second stage of attaching the display panel.

[0200] In the display device 4 of this modified example, in Figure 27 shown in the first stage, the display panel 41 is placed on the device housing 42 such that the pin 421 penetrates through the guide hole 412 at a position offset to the corner at the upper end side of the guide hole 412. At this stage, the display panel 41 is offset downward relative to the device housing 42. Thereafter, the display panel 41 moves to slide in the sliding direction D42, and the position of the display panel 41 relative to the device housing 42 is offset as Figure 28It is eliminated in the second stage as shown. At this time, the sliding movement of the display panel 41 is guided by the guide hole 412 of the receiving pin 421.

[0201] Figure 29 is a schematic diagram showing Figure 27 and Figure 28 how the sliding movement of the display panel shown is guided by the guide hole of the receiving pin.

[0202] As Figure 29 shown, in the first stage before sliding, the pin 421 penetrates through the guide hole 412 at a position offset to the upper end side corner of the guide hole 412 as described above. Then, the display panel 41 moves to slide, and this movement of the display panel 41 causes the pin 421 to move along the extending direction of the guide hole 412 within the guide hole 412, so that the pin 421 is guided in the sliding direction D42. The sliding movement as described above eliminates the position offset of the display panel 41 relative to the device housing 42, and at this stage, the through hole 413a of the fixing portion 413 of the display panel 41 communicates with the screw hole 422a of the fixed portion 422 of the device housing 42. Subsequently, a bolt 414 is screwed into the screw hole 422a through the through hole 413a to fasten and fix the fixing portion 413 to the fixed portion 422. On the upper end side opposite to the lower end side fixing portion 413 and the fixed portion 422, the display panel 41 engages with the device housing 42 as follows during sliding.

[0203] Figure 30 shows the engaging structure for the display panel and the device housing in a schematic cross-section taken along the Figure 28 line V41-V41 in, and Figure 31 shows the engaging structure for the display panel and the device housing in a schematic cross-section taken along the Figure 28 line V42-V42 in.

[0204] Figure 30 The first engaging structure shown is the engaging structure at the central portion of the upper end side of the display panel 41. This first engaging structure is the mating structure of the first engaging portion 415 of the display panel 41 and the first engaged portion 423 of the device housing 42. The first engaging portion 415 is a part arranged at the central portion of the upper end side of the display panel 41, which has a dendritic cross-sectional shape and extends in the sliding direction D42 while extending obliquely inwardly of the device housing 42. The other first engaged portion 423 is a rib arranged at the central portion of the non-shielded portion 42b of the upper end side of the device housing 42, which extends in the direction opposite to the sliding direction D42.

[0205] Figure 31The second engaging structure shown is an engaging structure on the side surface of the upper end side of the display panel 41, and similar to the above-described first engaging structure, it is a mating structure between the second engaging portion 416 of the display panel 41 and the second engaged portion 424 of the device housing 42. The second engaging portion 416 is a portion on the side surface of the upper end side of the display panel 41, which is one step lower than the first engaging portion 415, and has a dendritic cross-sectional shape and extends in the sliding direction D42. The other second engaged portion 424 is a rib disposed on the side surface of the non-shielding portion 42b of the upper end side of the device housing 42, which is one step lower than the first engaged portion 423 and extends in a direction opposite to the sliding direction D42.

[0206] When the display panel 41 moves to slide along the sliding direction D42, the following engagement occurs at the upper end side of each of the display panel 41 and the device housing 42. First, at the central portion, the end portion of the first engaging portion 415 of the display panel 41 mates with and engages with the first engaged portion 423 of the device housing 42 to overlap with the first engaged portion 423, as Figure 30 shown. At the same time, on the side surface side, the end portions of the second engaging portion 416 of the display panel 41 and the second engaged portion 424 of the device housing 42 are engaged with each other in a hooked manner, as Figure 31 shown. In this modified example, the display panel 41 is fixed to the device housing 42 by Figure 28 bolting at the shielding portion 42a shown and Figure 30 and Figure 31 engagement at the non-shielding portion 42b shown, thereby providing the completed display device 4.

[0207] Similar to the case of the above-described embodiment, in the configuration of the above third modified example, it is also possible to improve the appearance of the display device 4 without the need to install a cover.

[0208] In addition, in the configuration of the third modified example, the device housing 42 serving as the sliding receiving portion is provided with a pin 421, and the display panel 41 serving as the sliding mounting portion is provided with an elongated hole-shaped guide hole 412 that receives the pin 421 to guide the sliding movement of the display panel 41. According to this configuration, through the guide hole 412 that receives the pin 421, the sliding of the display panel 41 can be successfully guided, and thus the operability regarding the mounting operation can be improved.

[0209] In addition, in the configuration of the third modified example, different from the above-described embodiment, the sliding mounting portion is the display panel 41. According to this configuration, the display panel 41 can be mounted such that the fixing bolt 414 is not visible to the observer of the liquid crystal screen 411, thereby improving the appearance of the display device 4.

[0210] The description of the third modified example ends here, and now we return toFigures 1 to 9 and Figures 13 to 25 descriptions related to the embodiments shown.

[0211] In the present embodiment, different from Figures 26 to 31 the third modification example shown, the display panel 11 overlaps with the opening of the device housing 12, and the display panel 11 is fixed with bolts as shown in Figure 5 without sliding the display panel 11. Here, the display device 1 of the present embodiment is provided with the following positioning structure for positioning the display panel 11 relative to the device housing 12 such that a plurality of through holes 115 communicate with a plurality of screw holes 122.

[0212] Figure 32 shows the positioning structure for positioning the display panel relative to the device housing as viewed from the display panel side, and Figure 33 shows the Figure 32 positioning structure as viewed from the device housing side. Figure 34 shows in Figure 32 the cross-section taken along the line V14-V14 of Figure 32 the positioning structure.

[0213] Figures 32 to 34 The positioning structure shown in Figure 3 and Figure 5 is provided for each of the bolts 114a at both ends in the left-right direction D11 among the plurality of fixing bolts 114 of the display panel 11 shown in Figures 32 to 34 shown as Figure 3 and Figure 5 the right bolt 114a. The positioning structures at these two positions are the same structure, and as a representative example,

[0214] In this positioning structure, in the through hole 115a and the screw hole 122a for bolt fixing by the bolt 114a, the through hole 115a is formed as a first hole in the display panel 11, and the screw hole 122a is formed as a second hole in the device housing 12. In addition, a display-side positioning portion 119 is provided on the display panel 11, and a housing-side positioning portion 127 is provided on the device housing 12. The display-side positioning portion 119 is a portion provided with the through hole 115a and configured to be fitted to the housing-side positioning portion 127 which is a part of the device housing 12 to position the display panel 11 relative to the device housing 12. The housing-side positioning portion 127 is a portion configured to be fitted to the display-side positioning portion 119 for positioning, and on which the screw hole 122a is formed to communicate with the through hole 115a during fitting.

[0215] In addition, the display - side positioning portion 119 is a portion provided with a recess 119a opening toward the device housing 12, and a through - hole 115a penetrating the bottom of the recess 119a is formed therein. On the other hand, the housing - side positioning portion 127 is a convex portion configured to cooperate with the recess 119a of the display - side positioning portion 119, and is a portion where a screw hole 122a is formed to open on an abutting surface 127a, and this abutting surface 127a abuts against the bottom of the recess 119a when the convex portion is fitted into the recess 119a. In addition, the convex portion serving as the housing - side positioning portion 127 is formed thicker in the insertion direction D15 of the bolt 114a, and the screw hole 122a penetrates the abutting surface 127a in the insertion direction D15.

[0216] In addition, the convex portion serving as the housing - side positioning portion 127 is formed to protrude from the outer surface of the peripheral wall 128 of the device housing 12. On the other hand, the display panel 11 is a member extending wider than the opening of the device housing 12 covered by the display panel 11, and the display - side positioning portion 119 is formed on an extension portion described later, which extends toward the outer peripheral side beyond the opening of the device housing 12 to face the above - mentioned convex portion. Specifically, the display - side positioning portion 119 includes a rib 119b provided on the back surface of the display panel 11 facing the device housing 12, and this rib 119b defines the recess 119a, and the housing - side positioning portion 127 is received in the recess 119a when the opening is covered by the display panel 11. The rib 119b is formed on the above - mentioned extension portion extending beyond the opening, and is formed in a U - shape so as to surround the housing - side positioning portion 127 on three sides except for the peripheral wall 128 of the device housing 12 when the opening is covered by the display panel 11. The space surrounded by the U - shaped rib 119b corresponds to the recess for receiving the convex portion serving as the housing - side positioning portion 127. In addition, as Figure 34 shown, in the display - side positioning portion 119, the depth L11 of the recess 119a is smaller than the length L12 from the abutting surface 127a of the housing - side positioning portion 127, which is formed thicker in the insertion direction D15 of the bolt 114a.

[0217] In addition, in the present embodiment, a pair of convex portions serving as the housing - side positioning portion 127 are formed to protrude from the respective outer surfaces of a pair of wall portions 128a of the peripheral wall 128 of the device housing 12 that face each other. In addition, a pair of recesses 119a in the display - side positioning portion 119 are formed on the back side of the display panel 11 so that the pair of convex portions respectively cooperate with them. By forming each positioning portion at the above - mentioned positions, the positioning structure is provided for each of the bolts 114a at two positions at both ends in the left - right direction D11 among the plurality of bolts 114 for bolt - fixing the display panel 11. In addition, an outer - surface recess 11b is provided in a portion of the display panel 11 on its outer surface opposite to the device housing 12 corresponding to the display - side positioning portion 119, and this outer - surface recess 11b is recessed to receive the bolt head of the bolt 114a passing through the through - hole 115a.

[0218] The above-described positioning structure of the display device 1 in this embodiment can provide the advantageous effects described below.

[0219] That is, according to the above-described display device 1, on the display-side positioning portion 119 of the display panel 11, a through hole 115a is formed as a first hole for bolt fixing. In addition, on the housing-side positioning portion 127 of the device housing 12 that is fitted to the display-side positioning portion 119 for positioning, a second hole that serves as a screw hole 122a for bolt fixing is formed. By forming the corresponding bolt fixing holes on the respective positioning portions of the display panel 11 and the device housing 12 in this way, it is possible to position the display panel 11 and the device housing 12 while suppressing an increase in the size of the device, and then fastening can be performed by the bolt 114a.

[0220] In this embodiment, the display-side positioning portion 119 is a portion where the through hole 115a is formed at the bottom of the recess 119a, and the housing-side positioning portion 127 is a convex portion where the screw hole 122a is formed so as to open on the abutting surface 127a that abuts against the bottom of the recess 119a. According to this structure, the recess 119a is provided in the display-side positioning portion 119 of the display panel 11, and this recess 119a is placed on the device housing 12 to cover the opening of the device housing 12 during assembly, and the housing-side positioning portion 127 of the device housing 12 is a convex portion that is fitted to the recess 119a. With such a concave-convex structure, the recess 119a of the display-side positioning portion 119 can be placed on the housing-side positioning portion 127, so that the positioning of the two can be performed in a manner that adapts to the operation of placing the display panel 11 on the device housing 12, thereby improving the operability regarding positioning.

[0221] In addition, in this embodiment, the through hole 115a is formed to penetrate the bottom of the recess 119a of the display-side positioning portion 119. In addition, the convex portion that serves as the device-side positioning portion 127 is formed thick in the insertion direction D15 of the bolt 114a, and the screw hole 122a penetrates from the abutting surface 127a that abuts against the bottom of the recess 119a along the insertion direction D15. According to this structure, after positioning, the bolt 114a is screwed into the screw hole 122a of the device housing 12 through the through hole 115a from the display panel 11 side, so that the display panel 11 can be fixed to the device housing 12 with good operability using the bolt.

[0222] In addition, in this embodiment, the display panel 11 includes an outer recess 11b on its outer surface, and the outer recess 11b is recessed to accommodate the bolt head of the bolt 114a that penetrates the through hole 115a. According to this structure, the bolt head is accommodated in the outer recess 11b on the display panel 11 side, so that the appearance of the bolt fixing portion can be improved.

[0223] In addition, in the present embodiment, the display-side positioning portion 119 is provided with ribs 119b formed to surround the housing-side positioning portion 127, and is configured to accommodate the housing-side positioning portion 127 in a space inside the ribs 119b. According to this structure, by providing the housing-side positioning portion 127 on the outer surface of the peripheral wall 128 without reducing the component accommodation space inside the device housing 12, and by placing the housing-side positioning portion 127 in the recess 119a inside the ribs 119b of the display-side positioning portion 119, positioning can be effectively performed.

[0224] In addition, in the present embodiment, the convex portions of the housing-side positioning portion 127 and the recesses 119a of the display-side positioning portion 119 are respectively formed in pairs. According to this structure, by fitting a pair of convex portions into a pair of recesses 119a, the display panel 11 can be reliably positioned relative to the device housing 12.

[0225] In addition, in the present embodiment, the depth L11 of the recess 119a of the display-side positioning portion 119 is smaller than the length L12 of the housing-side positioning portion 127. According to this structure, during fitting, the long convex portion of the housing-side positioning portion 127 protrudes from the shallow recess 119a of the display-side positioning portion 119, so that the fitting state of the two positioning portions can be visually confirmed from the side of the device housing 12, and this is preferable.

[0226] The above-described embodiments and the first to third modification examples are merely representative forms of the display device, and the display device is not limited to these embodiments or modification examples. That is, various modifications can be made to the display device without departing from its gist.

[0227] For example, as an example of the display device, the above-described embodiments and the first to third modification examples show display devices 1, 2, and 3 configured to be mounted in an upright posture on the instrument panel C112 of the vehicle C11. However, the display device is not limited thereto, and the specific installation site and installation posture can be arbitrarily set.

[0228] In addition, in the above-described embodiments and the first to third modification examples, the display panels 11, 21, 31, and 41 including the liquid crystal screens 111, 211, 311, and 41 are shown as examples of the display panel. However, the display panel is not limited thereto, and it may include a display screen of a type other than the liquid crystal screen as long as it includes a display screen.

[0229] In addition, as an example of the display panel, the above-described embodiments and the first to third modification examples show display panels 11, 21, 31, and 41 having a substantially rectangular shape in a front view, as shown in various drawings. However, the display panel is not limited thereto, and its specific shape can be arbitrarily set.

[0230] In addition, as an example of the display device, the above-described embodiments and the first to third modification examples illustrate display devices 1, 2, 3, and 4, in which a pair of indicator regions 112 are arranged at positions shifted to the right and left with respect to the liquid crystal screens 111, 211, 311, and 411. However, the display device is not limited thereto, and the arrangement and number of the display screen and / or the indicator region in the display panel can be appropriately set according to applications and the like.

[0231] In addition, as an example of the display device, the above-described embodiment illustrates the display device 1 in which the control substrate 15 is arranged so as not to face a part of the upper end side of the respective vertical postures of the liquid crystal screen 111 and the indicator substrate 14. However, other arrangements are also possible as long as the control substrate is farther from the display panel than the indicator substrate and is arranged so as not to face at least a part of the display screen and the indicator substrate. However, as described above, by arranging the control substrate 15 so as not to face a part of the upper end side of the liquid crystal screen 111 and the indicator substrate 14, the appearance of the display device 1 can be improved when the display device 1 is arranged to protrude from the instrument panel C112.

[0232] In addition, as an example of the display device, the above-described embodiment illustrates the display device 1 in which the indicator substrate 14 and the control substrate 15 are connected to each other by a connector. However, other connection forms of the internal substrates are also possible. However, as described above, by using the connector connection, the space required for substrate connection can be reduced.

[0233] In addition, as an example of the display device, the above-described embodiment illustrates the display device 1 in which the indicator substrate 14 and the control substrate 15 are accommodated together in one device housing 12. However, the display device is not limited thereto, and it can be divided into a plurality of housings to accommodate the substrates. However, as described above, by accommodating them in one housing, the number of components related to the housing can be reduced, which is preferable.

[0234] In addition, as an example of the indicator region of the display panel, the above-described embodiment illustrates the indicator region 112 in which the diffusion portion 112b and the blocking portion 112c are integrally formed by two-color molding. However, the indicator region is not limited thereto, and the diffusion portion and the blocking portion can be formed as separate parts and combined by adhesion or bolt fixing or the like. However, as described above, by integrally forming using two-color molding, the thickness of the display device 1 can be further reduced while suppressing light leakage and brightness unevenness.

[0235] In addition, as another example of the substrate arrangement, in the above-described first modification example, a control substrate 25 disposed below the indicator substrate 24 and arranged in the crossing direction D24 is shown. However, other arrangements are also possible, as long as the control substrate is farther from the display panel than the indicator substrate and arranged so as not to face at least a part of each of the display screen and the indicator substrate. However, as described above, according to the above-described crossing arrangement, the overall thickness corresponding to the part of the display panel 21 can be reduced.

[0236] In addition, as an example of the display device, the above-described second modification example shows a display device 3 in which the indicator substrate 34 and the control substrate 35 are respectively housed in two housings. However, the display device is not limited thereto, and it may be configured to house all the substrates together in one housing. However, by housing the indicator substrate 34 and the control substrate 35 respectively in two housings, the overall thickness of the housing seen by the observer can be reduced.

[0237] In addition, as an example of the display device, the above-described second modification example shows a display device 3 in which the indicator substrate 34 and the control substrate 35 are connected by a cable connection. However, other connection forms of the internal substrates are also possible. However, as described above, by using a cable connection, the design freedom for installation to the installation site can be improved.

[0238] In addition, as an example of the display device, the above-described embodiment shows a display device 1 in which bolt fixing is used to fix the fixing portion 131 of the rear cover 13 serving as a sliding attachment portion and the fixed portion 123 of the device housing 12 constituting the sliding housing portion. However, the fixing of the sliding attachment portion and the sliding housing portion is not limited to bolt fixing, and any fixing method can be adopted. However, as described above, by adopting bolt fixing, the fixing strength can be improved and the operability can be improved.

[0239] In addition, as an example of the display device, the above-described embodiment shows a display device 1 in which, in the device housing 12, a guide ramp 125 is provided adjacent to a boss serving as the fixed portion 123. However, the fixed portion of the device housing may not be a boss, and the guide ramp may not be provided. However, as described above, by providing the fixed portion 123 as a boss and providing the guide ramp 125, the operability regarding the attachment of the rear cover 13 can be further improved.

[0240] In addition, as an example of the engaged portion that serves as the sliding housing portion, the above-described embodiment shows an engaged portion 117 including an engaging recess 117a or an engaging hole 117b, and as an example of the engaging portion of the sliding attachment portion, shows an engaging portion 133 formed as an engaging claw. However, the engaged portion and the engaging portion are not limited thereto, and other engaging structures are also possible. However, as described above, according to the above-described engaging structure, it is possible to effectively prevent a situation where the rear cover 13 accidentally detaches from the device housing 12.

[0241] In addition, in the above-described embodiment, as an example of the engaging claw that serves as the engaging portion, an engaging claw having a conical cross-sectional shape is shown. However, the engaging claw as the engaging portion is not limited thereto, and its cross-sectional shape may also be a shape other than the conical shape. However, as described above, according to the engaging claw having a conical cross-sectional shape, it is possible to further improve the operability regarding the attachment of the rear cover 13.

[0242] In addition, in the above-described embodiment, as an example of the engaging claw that serves as the engaging portion, an engaging claw configured to be press-fitted into the engaging recess 117a or the engaging hole 117b is shown. However, the engaging claw as the engaging portion is not limited thereto, and it can be inserted in a manner other than press-fitting. For example, it can be inserted into the engaging recess or the engaging hole with some clearance. However, as described above, the press-fitting of the engaging claw can suppress abnormal noise in the use state where the display device is mounted on the vehicle C11.

[0243] In addition, as an example of the display device, the above-described embodiment shows a display device 1 in which a display panel 11 constituting the sliding housing portion is provided with an abutted portion 118, and a rear cover 13 serving as the sliding attachment portion is provided with an abutting portion 134. However, the display device is not limited thereto, and it may not be provided with the abutted portion or the abutting portion. However, as described above, by providing the abutted portion 118 and the abutting portion 134, it is possible to further improve the operability regarding the attachment of the rear cover 13.

[0244] In addition, in the above-described embodiment, as an example of the abutted portion and the abutting portion, an abutted portion 118 provided adjacent to the engaged portion 117 and an abutting portion 134 provided adjacent to the engaging portion 133 are shown. However, the abutted portion and the abutting portion are not limited thereto, and they may be provided separately away from the engaged portion and the engaging portion. However, as described above, according to the above-described adjacent arrangement, the abutting portion 134 can abut the abutted portion 118 in a manner that successfully suppresses position deviation.

[0245] In addition, as an example of a display device, the above-described embodiment shows a display device 1 in which the rear cover 13 includes ribs 135 and the display device housing 12 includes positioning rails 126. However, the display device is not limited thereto, and the above-described ribs and positioning rails may not be provided. However, as described above, by providing the ribs 135 and the positioning rails 126, the fixing portion 131 of the rear cover 13 can be successfully positioned relative to the fixed portion 123 of the device housing 12.

[0246] In addition, as an example of a positioning rail, the above-described embodiment shows a positioning rail 126 which is a groove portion including a wide opening on the side for accommodating the rib 135. However, the positioning rail is not limited thereto, and it may be a groove having a constant width or the like. However, as described above, according to the positioning rail 126 configured to include a groove portion with a wide opening, the rib 135 can smoothly enter during the attachment of the rear cover 13.

[0247] In addition, as an example of a sliding attachment portion, the rear cover 13 is shown in the above-described embodiment. However, the sliding attachment portion is not limited thereto, and it may be in other forms as long as it can be slidably attached to the sliding accommodation portion. However, as described above, by using the rear cover 13 as the sliding attachment portion, the appearance of the display device 1 including the rear cover 13 can be improved.

[0248] In addition, as an example of a display device, the above-described third modification shows a display device 4 in which the device housing 42 serving as a sliding accommodation portion is provided with pins 421, and the display panel 41 serving as a sliding attachment portion is provided with guide holes 412. However, the display device is not limited thereto, and the pins of the sliding accommodation portion and the guide holes of the sliding attachment portion may not be provided. However, as described above, by providing the guide holes 412 and the pins 421, the operability of attaching the display panel 41 serving as the sliding attachment portion can be improved.

[0249] In addition, as an example of a sliding attachment portion, the display panel 41 is shown in the configuration of the above-described third modification. However, the sliding attachment portion is not limited thereto, and it may be in other forms as long as it can move to slide and attach to the sliding accommodation portion. However, as described above, by using the display panel 41 as the sliding attachment portion, the appearance of the display device 4 including the display panel 41 can be improved.

[0250] In addition, as an example of the display device, the above-described embodiment shows a display device 1 in which a through hole 115a for bolt fixing is formed as a first hole in the display-side positioning portion 119, and a screw hole 122a is formed as a second hole in the housing-side positioning portion 127. However, the display device is not limited thereto, and in a manner opposite to the above-described embodiment, the screw hole may be formed as the first hole in the display-side positioning portion, and the through hole may be formed as the second hole in the housing-side positioning portion.

[0251] In addition, as an example of the display device, the above-described embodiment shows a display device 1 including a display-side positioning portion 119 which is a portion where a through hole 115a is formed at the bottom of a recess 119a. Further, in the present embodiment, the housing-side positioning portion 127 is a convex portion provided with a screw hole 122a that opens on a contact surface 127a that contacts the bottom of the recess 119a. However, the positioning structure of the display panel and the device housing in the display device is not limited to the above-described concave-convex structure, and it may also adopt any structure. However, as described above, according to the above-described concave-convex structure, the operability regarding the positioning of the display panel 11 with respect to the device housing 12 can be improved. In addition, according to this structure, after positioning, the bolt 114a is screwed into the screw hole 122a of the device housing 12 through the through hole 115a from the display panel 11 side. Therefore, as described above, bolt fixing can be performed with good operability.

[0252] In addition, as an example of the display device, the above-described embodiment shows a display device 1 in which the outer surface of the display panel 11 includes an outer surface recess 11b for accommodating the bolt head. However, the display device is not limited thereto, and the outer surface of the display panel may not include the outer surface recess. However, as described above, by providing the outer surface recess 11b, the appearance of the bolt fixing portion can be improved.

[0253] In addition, as an example of the display device, the above-described embodiment shows a display device 1 in which the housing-side positioning portion 127 is a convex portion protruding from the outer surface of the peripheral wall 128 of the device housing 12, and the display-side positioning portion 119 includes a rib 119b surrounding the convex portion. However, the display device is not limited thereto, that is, the formation position and shape of the housing-side positioning portion and the display-side positioning portion can be arbitrarily set. However, as described above, by forming the housing-side positioning portion 127 as a convex portion protruding outward from the housing, and by providing the display-side positioning portion 119 having a rib 119b surrounding the convex portion, positioning can be effectively performed without reducing the component accommodation space.

[0254] In addition, as an example of a display device, the above-described embodiment shows a display device 1 in which a convex portion serving as the housing-side positioning portion 127 and a concave portion 119a of the display-side positioning portion 119 are provided in pairs. However, the display device is not limited thereto, that is, the number of the convex portion serving as the housing-side positioning portion and the concave portion of the display-side positioning portion can be arbitrarily set. However, as described above, by providing the convex portion and the concave portion in pairs, the display panel 11 can be reliably positioned with respect to the device housing 12.

[0255] In addition, as an example of a display device, the above-described embodiment shows a display device 1 in which the depth L11 of the concave portion 119a of the display-side positioning portion 119 is smaller than the length L12 of the housing-side positioning portion 127. However, the display device is not limited thereto, and the magnitude relationship between the depth of the concave portion of the display-side positioning portion and the length of the housing-side positioning portion can be arbitrarily set. However, as described above, by adopting the above magnitude relationship, the fitting state of the two positioning portions can be visually confirmed from the side of the device housing 12.

Claims

1. A display device, comprising: A display panel in which a display screen and an indicator area are two-dimensionally arranged; An indicator substrate on which a light source assembly is mounted, the indicator substrate being disposed on the back side of the display panel to face the indicator area and not face the display screen; And A control substrate, which is a component separated from the indicator substrate, and a control circuit for the display screen is formed on the control substrate. The control substrate is disposed on the back side of the display panel and is arranged to be farther away from the display panel than the indicator substrate, and the control substrate is arranged not to face at least a part of each of the display screen and the indicator substrate.

2. The display device according to claim 1, wherein The display panel is configured to be mounted in a vertical posture in which the display panel is arranged to stand upright at a predetermined installation site, The indicator area of the display panel is disposed at a position offset from the display screen in the left-right direction in the vertical posture, and In the up-down direction in the vertical posture, the control substrate is arranged not to face a part of the upper end sides of the display screen and the indicator substrate respectively.

3. The display device according to claim 1, wherein The display panel is configured to be mounted in a vertical posture in which the display panel is arranged to stand upright at a predetermined installation site, and In the up-down direction in the vertical posture, the control substrate is disposed below the indicator substrate and is arranged along a direction crossing the indicator substrate, such that the control substrate does not face either the display screen or the indicator substrate at all.

4. The display device according to any one of claims 1 to 3, wherein, The indicator substrate and the control substrate are connected to each other through a connector.

5. The display device according to any one of claims 1 to 3, further comprising a device housing, which together with the display panel defines an accommodation space for the indicator substrate and the control substrate.

6. The display device according to claim 4, further comprising a device housing, which together with the display panel defines an accommodation space for the indicator substrate and the control substrate.

7. The display device according to claim 1, further comprising: A first device housing, which together with the display panel defines a first accommodation space for accommodating the indicator substrate; And A second device housing, which is disposed on the back side of the first device housing corresponding to the back side of the display panel, and the second device housing defines a second accommodation space for accommodating the control substrate.

8. The display device according to claim 7, further comprising a connection cable, which electrically connects the display screen of the display panel defining the first accommodation space to the control substrate accommodated in the second accommodation space.

9. The display device according to any one of claims 1 to 3 and 7 to 8, wherein The indicator area on the display panel includes a diffusing portion and a blocking portion. The diffusing portion diffuses and transmits the light from the light source assembly, and the blocking portion surrounds the diffusing portion to block the light, and the diffusing portion and the blocking portion are integrally formed by two-color molding.

10. The display device according to claim 4, wherein the indicator area on the display panel includes a diffusing portion and a blocking portion. The diffusing portion diffuses and transmits the light from the light source assembly, and the blocking portion surrounds the diffusing portion to block the light, and the diffusing portion and the blocking portion are integrally formed by two-color molding.

11. The display device according to claim 5, wherein the indicator area on the display panel includes a diffusing portion and a blocking portion. The diffusing portion diffuses and transmits the light from the light source assembly, and the blocking portion surrounds the diffusing portion to block the light, and the diffusing portion and the blocking portion are integrally formed by two-color molding.

12. The display device according to claim 6, wherein the indicator area on the display panel includes a diffusing portion and a blocking portion. The diffusing portion diffuses and transmits the light from the light source assembly, and the blocking portion surrounds the diffusing portion to block the light, and the diffusing portion and the blocking portion are integrally formed by two-color molding.

Images