Display device

Abstract

A display device includes: a display panel having a first hole and a device housing, the device housing being configured such that the display panel is fastened and fixed to the device housing by bolts that pass through the first hole and are screwed into screw holes. The display panel includes a display-side positioning portion that is configured to cooperate with a part of the device housing to position the display panel relative to the device housing, and the display-side positioning portion includes the first hole, and the device housing includes a housing-side positioning portion that is configured to cooperate with the display-side positioning portion for positioning, and the housing-side positioning portion includes a second hole that is formed to communicate with the first hole when the housing-side positioning portion cooperates with the display-side positioning portion.

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). In the display device disclosed in Patent Document 1, the display panel is bolted and fixed to cover an opening of a bottom tubular device housing. In this display device, screw holes are provided in the device housing, and the display panel is fastened and fixed to the device housing by bolts that pass through through-holes located at positions near the outer periphery of the display panel and are screwed into the screw holes.

[0003] Prior Art Documents

[0004] Patent Document 1: JP 2010-281897 A Summary of the Invention

[0005] Technical Problem

[0006] However, when assembling the display device as described above, an operator visually locates the through-holes located at positions near the outer periphery of the display panel and the screw holes of the device housing, and then attaches the bolts. However, this may impose an operation burden on the operator. In order to reduce this operation burden, for example, one of the display panel and the device housing can be provided with a positioning protrusion and the other of the display panel and the device housing can be provided with a recess that mates with the protrusion. However, providing these positioning portions may cause an increase in the size of the display device.

[0007] In view of the above disadvantages, an object of the present invention is to provide a display device that can position a display panel and a device housing for fastening with bolts while preventing an increase in the size of the display device.

[0008] Solution to the Problem

[0009] To achieve the above object, in a first aspect, the present invention provides a display device, including: a display panel, which includes a display screen, and the display panel is provided with a first hole among through holes and screw holes for bolt fixing, and the first hole is formed on the outer peripheral side of the display screen; and a device housing, which is a bottomed cylindrical shape and includes an opening configured to be covered by the display panel, the device housing includes a second hole among the through holes and the screw holes, and the second hole is formed at a position communicating with the first hole, and the device housing is configured such that the display panel is fastened and fixed to the device housing by a bolt passing through the through hole and screwed into the screw hole, wherein the display panel includes a display-side positioning portion, which is configured to cooperate with a part of the device housing to position the display panel relative to the device housing, and the first hole is formed on the display-side positioning portion, and the device housing includes a housing-side positioning portion, which is configured to cooperate with the display-side positioning portion for positioning, and on the housing-side positioning portion, the second hole is formed to communicate with the first hole when the housing-side positioning portion cooperates with the display-side positioning portion.

[0010] Advantages of the present invention

[0011] According to the above display device, it is possible to position the display panel and the device housing while preventing an increase in the size of the display device, and fasten them with bolts. Description of the drawings

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

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

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

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

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

[0017] Figure 6 a view showing theFigures 1 to 5 Schematic perspective view of the arrangement of the indicator substrate and the control substrate inside the display device shown;

[0018] Figure 7 Shows along Figure 6 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;

[0019] Figure 8 Shows along Figure 6 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;

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

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

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

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

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

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

[0026] 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;

[0027] Figure 16 Shows a cross-section along the bottom surface of the groove, showing that the rib body of the left rib is received in Figure 15 the positioning rails at the two positions shown in Figure 15 the state inside the left positioning rail shown;

[0028] Figure 17 is a cross-section along the bottom surface of the groove, showing that the rib body of the right rib is received in Figure 15 the positioning rails at the two positions shown in Figure 15 the state inside the right positioning rail shown;

[0029] Figure 18 Shows a longitudinal section in the vertical direction along the vertical standing posture, showing how the engaging portion of the rear cover engages with the engaged portion of the display panel;

[0030] Figure 19 Is Figure 18 An enlarged view of the area A12 around the engaging portion and the engaged portion in

[0031] 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 abutted portion of the display panel;

[0032] Figure 21 Is around the engaging portion and the engaged portion Figure 20 An enlarged view of the area A13 shown in

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

[0034] Figure 23 Is an enlarged cross-section in the left-right direction showing the engaging portion, the engaged portion, the abutting portion, and the abutted portion, showing Figure 22 The state where the engaging portion of the rear cover shown in engages with the engaged portion of the display panel and the abutting portion of the rear cover abuts against the abutted portion 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-section in the left-right direction showing the engaging portion and the engaged portion, showing Figure 24 The state where the engaging portion of the rear cover shown in engages 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 diagram showing the first stage of the attachment of the display panel;

[0039] Figure 28 Is a schematic diagram showing the second stage of the attachment of the display panel;

[0040] Figure 29 Is showing Figure 27 And Figure 28 A schematic diagram showing how the sliding movement of the display panel shown in is guided by the guiding holes of the receiving pins;

[0041] Figure 30 Shows the engagement 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 engagement 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 Figure 32 of the positioning structure as viewed from the device housing side; and

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

[0046] List of reference numerals

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

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

[0049] 11a Display side shielding portion

[0050] 11b Outer concave portion

[0051] 12, 22, 42 Device housing

[0052] 12a, 42a Shielding portion

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

[0054] 12c Central axis

[0055] 13 Rear cover

[0056] 14, 24, 34 Indicator substrate

[0057] 15, 25, 35 Control substrate

[0058] 32-1 First device housing

[0059] 32-2 Second device housing

[0060] 36 Connection cable

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

[0062] 112 Indicator area

[0063] 112a Indicator

[0064] 112b Diffuser

[0065] 112c Blocking part

[0066] 112d Fixed flange

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

[0068] 113 Panel frame

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

[0070] 116 Eaves

[0071] 117 Engaged part

[0072] 117a Engagement hole

[0073] 117b Engagement recess

[0074] 118 Abutted part

[0075] 119 Display side positioning part

[0076] 119a Recess

[0077] 119b, 135 Ribs

[0078] 121 Accommodating space

[0079] 122, 123a, 422a Threaded holes

[0080] 123, 422 Fixed parts

[0081] 125 Guide ramp

[0082] 126 Positioning track

[0083] 126L Left inner surface

[0084] 126R Right inner surface

[0085] 127 Housing side positioning part

[0086] 127a Contact surface

[0087] 128 Peripheral wall

[0088] 131, 413 Fixing parts

[0089] 133 Engaging part

[0090] 133a Claw rib

[0091] 133b, 134b Connecting rib

[0092] 134 Contact portion

[0093] 134a Contact rib

[0094] 135a Eave - shaped 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 Guide hole

[0100] 421 Pin

[0101] 415 First engaging portion

[0102] 416 Second engaging portion

[0103] 423 First engaged portion

[0104] 424 Second engaged portion

[0105] C11, C31 Vehicle

[0106] C112, C312 Instrument panel

[0107] D11, D41 Left - right direction

[0108] D12, D42 Sliding direction

[0109] D13, D23 Up - down direction

[0110] D14 Plan view direction

[0111] D15 Insertion direction

[0112] D24 Cross direction

[0113] L11 Depth

[0114] L12 Length

[0115] W11 Width dimension Detailed implementation manner

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

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

[0118] Figure 1 and Figure 2 The display device 1 shown is installed on the instrument panel C112 as an installation site in front of the driver's seat in the vehicle C11. In the present embodiment, the display device 1 is installed on the instrument panel C112 in an upright posture in a state where a portion of the display device 1 from the lower end side to the back side is embedded and hidden in the instrument panel C112.

[0119] Figure 3 is a view showing Figure 1 and Figure 2 front view and side view of the display device shown, Figure 4 is Figure 3 a schematic rear view of the display device shown, and Figure 5 is Figure 3 and Figure 4 a 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 that two-dimensionally arranges a liquid crystal screen 111 as a display screen and an indicator area 112 and is 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 two-dimensionally arranged in a grid pattern. Each indicator 112a is a display lamp, which is configured to be lit by passing the light of the LED light source 141 of the indicator substrate 14, thereby displaying various information. The display panel 11 is installed 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 in the left and right direction D11 with respect to the upright posture from the liquid crystal screen 111.

[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 2As shown, with this part of the device housing 12 from the peripheral wall on the lower end side to the back surface hidden as the shielding portion 12a from the perspective of the observer of the display panel 11, the device housing 12 is installed on the instrument panel C112 in a vertically standing posture.

[0123] The display panel 11 is installed 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 the display-side shielding portion 11a, which, together with the shielding portion 12a of the device housing 12, is embedded and hidden in the instrument panel C112, as Figure 1 and Figure 2 shown. A plurality of through holes 115 for bolt fixing are formed at the portion of the panel frame 113 corresponding to the display-side shielding portion 11a. In the device housing 12, at the position of the shielding portion 12a on the lower end side opposite to the through holes 115 of the display panel 11, a plurality of screw holes 122 for bolt fixing are formed. 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 on 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 the engaged portions 117 at the two end positions among the four engaged portions 117 arranged in a row, and are arranged inside with respect to the engaged portions 117 at the two positions.

[0124] The rear cover 13 is a component that is attached to the device housing 12 to cover the back side of the device housing 12 on the side where the display panel 11 is arranged. The device housing 12 includes a non-shielding 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 cylindrical device housing 12, and the rear cover 13 is attached by sliding the rear cover 13 in the sliding direction D12 extending from the non-shielding portion 12b to the shielding portion 12a. The rear cover 13 is formed such that the lower end side is widened 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] The fixed parts 123 are formed at four positions on the back surface of the shielding part 12a of the device housing 12 opposite to the rear cover 13, and when the rear cover 13 is attached to the device housing 12 by sliding the rear cover 13, the rear cover 13 is fixed to the fixed parts 123. Each fixed part 123 is provided with a screw hole 123a. In addition, on the inner surface of the bottom widened in a skirt shape, the rear cover 13 includes fixing parts 131 at four positions, and the fixing parts 131 protrude inward so that their ends abut against the fixed parts 123 at four positions of the device housing 12. Each fixing part 131 includes a through hole 131a for bolt fixing. The fixing parts 131 of the rear cover 13 are fastened and fixed to the fixed parts 123 of the device housing 12 by bolts 132 passing through the through holes 131a and screwed into the screw holes 123a.

[0126] In addition, the part of the rear cover 13 corresponding to the non-shielding part 12b of the device housing 12 is provided with engaging parts 133 at four positions, and the engaging parts 133 at the four positions are configured to engage with the engaged parts 117 at four positions provided on the eaves part 116 of the display panel 11 extending above the non-shielding part 12b. The abutting parts 134 configured to abut against the abutted parts 118 provided on the eaves part 116 are respectively arranged inside and adjacent to the engaging parts 133 at the two end positions among the four positions where the engaging parts 133 are arranged in a row. The inner surface of the rear cover 13 is provided with ribs 135 at two positions, and the ribs 135 are configured to guide the sliding in the sliding direction D12 while positioning the fixing parts 131 of the rear cover 13 relative to the fixed parts 123 of the device housing 12 during the attachment of the rear cover 13 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 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 a vertical posture with its hypotenuse facing the non-shielding part 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 on the back side of the indicator substrate 14 when viewed from the display panel 11 inside the device housing 12. 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 arranged in an upright 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 Figure 7 shows along Figure 6 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 8 shows along Figure 6 the arrangement of the indicator substrate and the control substrate in a 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 in

[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 farther 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 up-down direction D13 in the upright posture. Due to this arrangement, on the upper end side in the up-down direction D13 of the device housing 12, that is, in the non-shielding portion 12b, only the indicator substrate 14 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-down direction, where the non-shielding portion 12b is thinner than the lower end side in the up-down direction D13, that is, the shielding 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 to conform to the stepped shape of the device housing 12 where the non-shielding portion 12b at 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 opposing portions (i.e., connected via a connector connection). In the present embodiment, in the display panel 11, the indicator area 112 displays information by receiving light from the LED light source 141 of the indicator substrate 14 that is configured to be turned on and off under the control of the control substrate 15, and the indicator area 112 is configured as described below.

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

[0134] Figure 9 The left indicator area 112 of a pair of left and right indicator areas 112 of the display panel 11 is shown. As Figure 9 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 two-dimensionally in a lattice pattern, and the diffusing portion 112b diffuses and transmits the light from the LED light source 141. 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 respective part 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 a vertical posture, and the indicator area 112 of the display panel 11 is disposed at a position offset from the liquid crystal screen 111 in the left - right direction D11 with respect to the vertical posture. In addition, the control substrate 15 is arranged not to face a part of the upper - end side in the up - down direction D13 with respect to the vertical 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 vertical posture, it is possible to reduce 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, as shown in Figure 7 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 shown in Figure 1 and Figure 2 That is, according to the above - described 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 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 the number of housing - related components can be reduced, and this is preferable.

[0140] In addition, in the present embodiment, for the indicator area 112 in the display panel 11, the light from the LED light source 141 is integrally formed by two - color molding through a diffusion part 112b that diffuses and transmits the light and a blocking part 112c that surrounds the diffusion part 112b to block the light. According to this structure, compared with the case where the diffusion part 112b and the blocking part 112c are formed as separate components, light leakage and uneven brightness in the indicator area 112 can be suppressed. Therefore, the thickness of the display device 1 including the indicator area 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 in 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 a 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 vertical direction D23 of the vertical posture, such that the control substrate 25 is arranged along the crossing 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 shown in Figure 10 , and the device housing 22 that houses the indicator substrate 24 and the control substrate 25 is also an L-shaped housing. Further, 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, similar to the case of the above-described embodiment, it is also possible to reduce the thickness of at least a part of the display device 2.

[0145] Further, 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, and thus it is possible to reduce the thickness corresponding to the entire portion of the display panel 21.

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

[0147] The display device 3 of 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 tube-shaped 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 tube-shaped 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 on which a control circuit for switching control of the mounted light source is mounted. Further, 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 that 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 is a schematic view showing an installation example in which the display device of the second modification example is installed in a vehicle.

[0150] InFigure 12 In the installation example shown, 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 is suspended. In this installation example, the second device housing 32-2 that houses the control substrate 35 supports the first device housing 32-1 from the back side. The first device housing 32-1 houses 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 inserted and fixed to the instrument panel C312 that is 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, it is also possible to reduce the thickness of at least a part of the display device 3.

[0152] Furthermore, according to the configuration of the second modification example, the control substrate 35 is housed 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 a housing space for the indicator substrate 34. According to this configuration in which the housing is formed as separate components, the overall thickness of the housing viewed by the observer can be reduced.

[0153] Furthermore, the second modification example is also provided with a connection cable 36 that electrically connects the indicator substrate 34 housed in the first housing space 321 and the control substrate 35 housed in the second housing space 324. According to this configuration, the degree of freedom in the installation design of the display device 3 can be improved, so that in addition to Figure 12 the installation example shown, for example, the first device housing 32-1 and the second device housing 32-2 can be placed separately 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 the reference 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 isFigure 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 device housing 12 on the side where the display panel 11 is disposed. 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 vertical posture toward the shielded 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 four positions move to slide to the positions where they overlap with the screw holes 123a of the fixed portions 123 provided at four positions on the back surface of the shielded 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 the screw hole 123a. A guide ramp 125 is provided on the back surface of the device housing 12 as the sliding accommodation portion. One guide ramp 125 is provided for each fixed portion 123, and the guide ramp 125 is configured to guide the fixing portion 131 to the end face of the boss as the fixed portion 123 during the attachment of the rear cover 13 as the sliding attachment portion. The guide ramp 125 is a ramp portion arranged adjacent to the boss as the fixed portion 123. The guide ramp 125 extends toward the end face of the boss where the screw hole 123a opens in the sliding direction D12, and the height of the guide ramp 125 gradually increases along the sliding direction D12.

[0159] In addition, as briefly described with reference to Figure 5 the inner surface of the rear cover 13 is provided with ribs 135 at two positions. The ribs 135 at the two positions are configured to guide the sliding in the sliding direction D12 while positioning the fixing portion 131 of the rear cover 13 relative to the fixed portion 123 of the device housing 12. 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 15As shown, the rib 135 includes an eaves-like rib 135a and a rib body 135b. The eaves-like 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-like rib 135a. The rib 135 is provided at both ends in the left-right direction D11 near the inner surface of the rear cover 13 and at positions outside the fixing portions 131 at four positions arranged in a row.

[0162] On the other hand, positioning rails 126 for receiving the rib body 135b of the rib 135 are 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 in 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 fixed portion 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 at positions outside the fixed portions 123 at four positions arranged in a row.

[0163] Figure 16 A cross-section along the bottom surface of the groove is shown, showing the state of receiving the rib body of the left rib in the Figure 15 left positioning rail among the positioning rails at the two positions shown. In addition, Figure 15 the state is shown. Figure 17 A cross-section along the bottom surface of the groove is shown, showing the state of receiving the rib body of the right rib in the Figure 15 right positioning rail among the positioning rails at the two positions shown. Figure 15 the state is shown.

[0164] As Figures 15 to 17As 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 in the sliding direction D12 in a state where its relative position with respect to the device housing 12 in the left-right direction D11 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 with respect 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 15 shown, the rear cover 13 as a sliding attachment portion is attached to a structure as a sliding receiving portion in which the display panel 11 is attached to the device housing 12. In this sliding receiving portion, an eaves portion 116 formed at the upper end side on the back surface of the display panel 11 extends above the peripheral wall at the upper end side of the device housing 12. Further, as briefly described with reference to Figure 5 , the eaves portion 116 is provided with engaged portions 117 at four positions that engage with the rear cover 13 and abutted portions 118 at two positions that abut against the rear cover 13. Further, on the upper end side of the rear cover 13, engaging portions 133 at four positions and abutting portions 134 at two positions are provided. The engaging portions 133 at four positions engage with the engaged portions 117 at four positions provided on the eaves portion 116 of the display panel 11, and the abutting portions 134 at two positions abut against the abutted portions 118.

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

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

[0168] The engaging portion 133 on the rear cover 13 is an engaging claw configured to fit into the engagement hole 117a or the engagement recess 117b and engage with the engagement hole 117a or the engagement recess 117b. The engaging claw 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 as the engaging portion 133 when viewed from the plan view direction D14 relative to the rear cover 13 is a press - fit shape to be referred to later with reference to Figure 23 and Figure 24 described.

[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 so that the through - hole 131a and the screw hole 123a communicate, 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 A longitudinal section similar to Figure 18 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 as shown in Figure 20 around the engaging portion and the engaged portion.

[0171] The abutted portion 118 of the display panel 11 in the display device 1 is the portion abutted by the abutting portion 134 when the rear cover 13 reaches the mounting position, at which the fixing portion 131 and the fixed portion 123 overlap such that the through hole 131a communicates with the screw hole 123a. By abutting the abutting portion 134 against the abutted portion 118, the abutted portion 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 abutted portion 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 of 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 the abutted portion 118 of the eaves portion 116 when the rear cover 13 reaches the above-mentioned mounting position.

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

[0173] First, as Figure 5 shown, on the upper end side portion 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 respectively adjacent to the inner sides of the two engaging portions 133 at both ends among the four-position engaging portions 133.

[0174] Figure 22 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 each having Figure 19 the tapered shape shown and arranged facing each other in the left-right direction D11. Further, 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 facing each other in the left-right direction D11, and each rib portion is in the sliding direction D12 such that when it is in the reference Figure 18 and Figure 20When at the described attachment position, it protrudes by the protruding amount of the part 118 to be abutted against the display panel 11. Further, the connecting rib 134b is a rib portion that connects a pair of abutting ribs 134a in the left-right direction D11 on the back side of the rear cover 13.

[0176] Figure 23 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 engages 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 23 shown, when the rear cover 13 reaches the above-described attachment 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 portion 118 to be abutted, so that the sliding of the rear cover 13 stops. At this time, the engaged portion 117 adjacent to the portion 118 to be abutted 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 as 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 portion 123 to be fixed 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, this kind of positioning by the press-fitting of the engaging portion 133 is similarly performed.

[0178] 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. Further, Figure 25 is an enlarged cross-section 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, which is disposed on the inner surface of the rear cover 13 at a position near the center in the left - right direction D11 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, which is disposed on the eaves portion 116 of the display panel 11 at a position near the center in the left - right direction D11 and not adjacent to the engaged 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 for the engaging claw to be press - fitted into the engaging hole 117b of the engaged portion 117. Such a press - fit near the center also contributes to the positioning of the fixing portion 131 of the rear cover 13 relative to the fixed portion 123 of the device housing 12 during the attachment of the rear cover 13.

[0180] The above - described attachment 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 - described display device 1, the rear cover 13 as a sliding attachment portion is attached to the sliding housing portion including the device housing 12 by sliding in the sliding direction D12 from the non - shielding portion 12b of the device housing 12 to the shielding portion 12a. In addition, the rear cover 13 is fixed by the engagement of the non - shielding portion 12b and the fixation of the shielding portion 12a. In the non - shielding portion 12b of the device housing 12, the engaging portion 133 of the rear cover 13 is simply engaged with the engaged portion 117 of the display panel 11, and the display panel 11 and the device housing 12 together form a sliding housing portion, so that no fixing components such as bolts are exposed on its outer periphery. On the other hand, the fixation of the fixing portion 131 of the rear cover 13 relative to the fixed portion 123 of the device housing 12 is performed in the shielding portion 12a of the device housing 12. Therefore, even when such fixation 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 - described display device 1, by adopting sliding, engagement, and fixation in the shielding portion 12a, the appearance can be improved without installing a cover for hiding the above - mentioned fixing components exposed on the outer periphery. In addition, since no cover is 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 portion 123 of the device housing 12. On the other hand, the fixing portion 131 of the rear cover 13 is a portion that protrudes to overlap with the fixed portion 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 portion 12a is fixed by screwing the bolt 132 through the through hole 131a of the fixing portion 131 of the rear cover 13 into the screw hole 123a of the fixed portion 123 of the device housing 12. Therefore, according to the above structure, in the case where it is desired to hide the shielding portion 12a during installation, the bolt 132, which is a general-purpose fixing member and is easy to use, is adopted, so that the fixing strength can be improved and the operability can be improved.

[0183] In the present embodiment, the fixed portion 123 is a boss protruding in a columnar shape and includes the screw hole 123a. Further, 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 portion 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 open, and has a height that gradually increases with respect to the sliding direction D12. According to this structure, during the attachment of the rear cover 13, the fixing portion 131 is smoothly guided to the end face of the boss, which is the fixed portion 123, by the guiding ramp 125 of the device housing 12. This guiding by the guiding ramp 125 can further improve the operability of 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, which is configured to fit 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, a situation where the rear cover 13 accidentally detaches from the device housing 12 can be effectively prevented.

[0185] In addition, in the present embodiment, the engaging claw, which is the engaging portion 133, is formed such that its 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, so that the operability of the attachment of the rear cover 13 can be further improved.

[0186] In addition, in the present embodiment, the width dimension W11 of the engaging claw that serves as the engaging portion 133 when viewed from the planar direction D14 with respect to the rear cover 13 is the dimension by which the engaging claw is press-fitted into the engaging recess 117a or the engaging hole 117b. By 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 vibrations, 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 forming the sliding housing portion is provided with an abutting portion 118, and during the attachment of the rear cover 13, the rear cover 13 abuts against the abutting portion 118 when the rear cover 13 moves to the attachment position where the fixing portion 131 and the fixed portion 123 overlap. In addition, the rear cover 13 is provided with an abutting portion 134, and the abutting portion 134 abuts against the abutting portion 118 when the rear cover 13 reaches the above-mentioned attachment position. The abutment of the abutting portion 134 with respect to the abutting portion 118 restricts the rear cover 13 from moving beyond the above-mentioned attachment position. According to this structure, the movement of the rear cover 13 is restricted by causing the abutting portion 134 of the rear cover 13 to abut against the abutting portion 118 of the display panel 11, thereby positioning the fixing portion 131 with respect to the fixed portion 123 in the sliding direction D12. This positioning can further improve the operability regarding the attachment of the rear cover 13.

[0188] In addition, in the present embodiment, the abutting portion 118 is provided adjacent to the engaged portion 117 in the display panel 11, and the abutting portion 134 is provided adjacent to the engaging portion 133 in the rear cover 13. According to this structure, through the engagement of the engaging portion 133 with the engaged portion 117, the abutting portion 134 arranged adjacent to the engaging portion 133 can successfully abut against the abutting portion 118 arranged 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 with respect 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 with respect to the fixed portion 123.

[0190] In addition, in this embodiment, the positioning rail 126 of the device housing 12 is a groove portion, and the groove portion is open such that the side for receiving 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, the rib 135 can smoothly enter the positioning rail 126 during the attachment of the rear cover 13.

[0191] In addition, in the present embodiment, the sliding attachment portion is the rear cover 13 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 suspend 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 Figures 10 to 12 illustrated.

[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 arranged. In this third modification, no rear cover is provided, and the device housing 42 corresponds to the sliding receiving portion.

[0195] In this modification, the display panel 41 is attached to the device housing 42 by sliding in the sliding direction D42 from the shielding portion 42a located at the lower end side of the device housing 42 in the vertically standing posture to the non-shielding portion 42b located at the upper end side of the device housing 42. In this modification, the following structure for guiding the 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 formed in a long hole shape extending along the sliding direction D42 and 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 the 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, and the boss protrudes in a columnar shape and includes a screw hole 422a.

[0197] The guide hole 412 is formed in a region on 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 installed in a vertical posture on the instrument panel C112 as shown. In addition, fixing portions 413 are provided at four positions in this lower end side region, and the four fixing portions 413 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 region in the region on the lower end side of the display panel 41 where a through hole 413a for bolt fixing is formed. Figure 1 shown, when the device housing 42 is installed in a vertical posture on the instrument panel C112, it is hidden together with the shielding portion 42a of the device housing 42. In addition, fixing portions 413 are provided at four positions in this lower end side region, and the four fixing portions 413 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 region in the region on the lower end side of the display panel 41 where a through hole 413a for bolt fixing is formed.

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

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

[0200] In the display device 4 of this modified example, in Figure 27 the first stage shown, 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 portion on the upper end side of the guide hole 412. At this stage, the display panel 41 is offset downward with respect to the device housing 42. Thereafter, the display panel 41 moves and slides in the sliding direction D42, and the positional offset of the display panel 41 with respect to the device housing 42 is eliminated as shown in Figure 28 the second stage. At this time, the sliding movement of the display panel 41 is guided by the guide hole 412 that houses the 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 housing pin.

[0202] As shown in Figure 29As shown, in the first stage before sliding, the pin 421 penetrates through the guide hole 412 at the position of the corner offset to the upper end side 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 within the guide hole 412 along the extending direction of the guide hole 412, so that the pin 421 is guided in the sliding direction D42. The sliding movement as described above eliminates the positional deviation 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, the 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 fixing portion 413 and the fixed portion 422 on the lower end side, the display panel 41 engages with the device housing 42 as follows during sliding.

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

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

[0205] Figure 31 The second engagement structure shown is the engagement structure on the side surface side of the upper end side of the display panel 41, and similar to the above-described first engagement structure, it is the mating structure of the second engagement portion 416 of the display panel 41 and the second engaged portion 424 of the device housing 42. The second engagement portion 416 is a portion on the side surface side of the upper end side of the display panel 41, which is one order lower than the first engagement 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 arranged on the side surface side of the non-shielded portion 42b on the upper end side of the device housing 42, which is one order lower than the first engaged portion 423 and extends in the direction opposite to the sliding direction D42.

[0206] When the display panel 41 moves to slide along the sliding direction D42, the following engagement is performed on 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 is engaged with and overlaps the first engaged portion 423 of the device housing 42, as shown in Figure 30 shown. At the same time, on the side 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 shown in Figure 31 shown. In this modification example, the display panel 41 is fixed to the device housing 42 by bolt fixing at the shielding portion 42a shown in Figure 28 and the engagement at the non-shielding portion 42b shown in Figure 30 and Figure 31 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 modification 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 modification example, the device housing 42 serving as the sliding housing portion is provided with a pin 421, and the display panel 41 serving as the sliding mounting portion is provided with a long hole-shaped guide hole 412 that houses the pin 421 to guide the sliding movement of the display panel 41. According to this configuration, the sliding of the display panel 41 can be successfully guided through the guide hole 412 that houses the pin 421, and thus the operability regarding the mounting operation can be improved.

[0209] In addition, in the configuration of the third modification 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 bolts 414 are 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 modification example ends here, and now we return to the description related to the embodiment shown in Figures 1 to 9 and Figures 13 to 25 shown.

[0211] In this embodiment, different from the third modification example shown in Figures 26 to 31 shown, the display panel 11 overlaps the opening of the device housing 12, and the display panel 11 is fixed with bolts as shown in Figure 5 shown without sliding the display panel 11. Here, the display device 1 of this 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 a positioning structure for positioning a display panel relative to a device housing as viewed from the display panel side, and Figure 33 shows, as viewed from the device housing side, Figure 32 the positioning structure of. Figure 34 Shows in a cross-section taken along the line Figure 32 V14-V14 of Figure 32 the positioning structure of.

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

[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 in the display panel 11 as the first hole, and the screw hole 122a is formed in the device housing 12 as the second hole. Further, 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 that is provided with the through-hole 115a and is 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 that is 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] Further, the display-side positioning portion 119 is a portion that is provided with a concave portion 119a opening toward the device housing 12, and on which the through-hole 115a penetrating the bottom of the concave portion 119a is formed. On the other hand, the housing-side positioning portion 127 is a convex portion configured to be fitted to the concave portion 119a of the display-side positioning portion 119, and is a portion in which the screw hole 122a is formed to open on the abutment surface 127a that abuts against the bottom of the concave portion 119a when the convex portion is fitted to the concave portion 119a. Further, the convex portion that is the housing-side positioning portion 127 is formed thicker in the insertion direction D15 of the bolt 114a, and the screw hole 122a penetrates from the abutment 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 that extends 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 that extends outward to the outside of the opening of the device housing 12 to face the 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 the rib 119b defines a recess 119a. When the opening is covered by the display panel 11, the housing-side positioning portion 127 is received in the recess 119a. The rib 119b is formed on the above-mentioned extension portion that extends outside 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 that is formed thick 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 are respectively engaged therewith. 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 the outer surface opposite to the device housing 12 corresponding to the display-side positioning portion 119, and the outer surface recess 11b is recessed to receive the bolt head of the bolt 114a passing through the through hole 115a.

[0218] The above-mentioned positioning structure of the display device 1 of the present embodiment can provide the following advantageous effects.

[0219] That is, according to the above-described display device 1, a through-hole 115a is formed as a first hole for bolt fixation on the display-side positioning portion 119 of the display panel 11. Further, a second hole for bolt fixation, which is a screw hole 122a, is formed on the housing-side positioning portion 127 of the device housing 12 that is fitted to the display-side positioning portion 119 for positioning. By forming corresponding bolt fixation 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 the present 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 abutment 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] Further, in the present embodiment, the through-hole 115a is formed to penetrate the bottom of the recess 119a of the display-side positioning portion 119. Further, the convex portion as the device-side positioning portion 127 is formed thick in the insertion direction D15 of the bolt 114a, and the screw hole 122a is formed through the abutment 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 from the display panel 11 side through the through-hole 115a, so that the display panel 11 can be fixed to the device housing 12 with the bolt with good operability.

[0222] Further, in the present 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 fixation 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 the 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 concave portions 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 concave portions 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 concave portion 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 concave portion 119a of the display-side positioning portion 119, so that the fitting state of the two positioning portions can be visually confirmed from the device housing 12 side, 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 modified 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 upright 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 being accommodated 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 diffusing portion 112b and the blocking portion 112c are integrally formed by two-color molding. However, the indicator region is not limited thereto, and the diffusing 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 first modification example described above, a control substrate 25 is shown which is arranged below the indicator substrate 24 and along the crossing direction D24. 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 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 a display device, the second modification example described above shows a display device 3 in which the indicator substrate 34 and the control substrate 35 are respectively accommodated in two housings. However, the display device is not limited thereto, and it may be configured to accommodate all the substrates together in one housing. However, by respectively accommodating the indicator substrate 34 and the control substrate 35 in two housings, the overall thickness of the housing seen by the observer can be reduced.

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

[0238] In addition, as an example of a 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 fitting portion and the fixed portion 123 of the device housing 12 constituting the sliding accommodating portion. However, the fixing of the sliding fitting portion and the sliding accommodating 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 a 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 either. However, as described above, by providing the fixed portion 123 as a boss and providing the guide ramp 125, the operability regarding the fitting of the rear cover 13 can be further improved.

[0240] In addition, as an example of the engaged portion of 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 mounting 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 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 serving as the engaging portion, an engaging claw having a tapered cross-sectional shape is shown. However, the engaging claw serving as the engaging portion is not limited thereto, and its cross-sectional shape may also be a shape other than the tapered shape. However, as described above, according to the engaging claw having a tapered 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 serving 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 serving 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 usage 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 abutting portion 118, and a rear cover 13 serving as the sliding mounting portion is provided with an abutting portion 134. However, the display device is not limited thereto, and it may not be provided with the abutting portion or the abutting portion. However, as described above, by providing the abutting 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 abutting portion and the abutting portion, an abutting 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 abutting 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 adjacent arrangement, the abutting portion 134 can abut against the abutting 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 a rear cover 13 includes ribs 135 and a 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 receiving the rib 135. However, the positioning rail is not limited thereto, and it may be a groove with 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 receiving 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 a device housing 42 serving as a sliding receiving portion is provided with pins 421, and a 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 receiving 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 attachability of 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 receiving 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 the display device 1 in which the through hole 115a for bolt fixing is formed as the first hole in the display-side positioning portion 119, and the screw hole 122a is formed as the 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 the display device 1 including the display-side positioning portion 119 which is a portion where the through hole 115a is formed at the bottom of the recess 119a. Further, in the present embodiment, the housing-side positioning portion 127 is a convex portion provided with the screw hole 122a opening on the 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 relative 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, and thus, 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 the display device 1 in which the outer surface of the display panel 11 includes the outer 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 recess. However, as described above, by providing the outer 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 the 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 the rib 119b surrounding the convex portion. However, the display device is not limited thereto, that is, the formation positions and shapes 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 to the outside of the housing and by providing the display-side positioning portion 119 having the rib 119b surrounding the convex portion, positioning can be effectively performed without reducing the component accommodation space.

[0254] In addition, as an example of the 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 the 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, the display panel including a display screen, the display panel being provided with a first hole among through holes and screw holes for bolt fixation, the first hole being formed on the outer peripheral side of the display screen; And A device housing, the device housing being a bottomed cylindrical shape and including an opening configured to be covered by the display panel, the device housing including a second hole among the through hole and the screw hole, the second hole being formed at a position communicating with the first hole, the device housing being configured to: fasten and fix the display panel to the device housing by a bolt passing through the through hole and screwed into the screw hole, Wherein, The display panel includes a display-side positioning portion, the display-side positioning portion being configured to cooperate with a part of the device housing to perform positioning of the display panel relative to the device housing, and the first hole being formed on the display-side positioning portion, and The device housing includes a housing-side positioning portion, the housing-side positioning portion being configured to cooperate with the display-side positioning portion for positioning, and the second hole being formed on the housing-side positioning portion, such that the second hole communicates with the first hole when the housing-side positioning portion cooperates with the display-side positioning portion, The display-side positioning portion is a part provided with a recess facing the opening of the device housing, the first hole being formed at the bottom of the recess, and The housing-side positioning portion is a convex portion configured to cooperate with the recess, the second hole being formed on the housing-side positioning portion to open on a contact surface that abuts against the bottom of the recess when the convex portion cooperates with the recess, The convex portion serving as the housing-side positioning portion is formed to protrude from the outer surface of the peripheral wall of the device housing, The display panel is a component that extends wider than the opening of the device housing, The display-side positioning portion includes ribs arranged on the back surface of the display panel facing the device housing, the ribs being formed to surround the housing-side positioning portion on three sides except for the peripheral wall when the display panel covers the opening of the device housing, and The space surrounded by the ribs is the recess.

2. The display device according to claim 1, wherein, The first hole is a through hole formed to penetrate the bottom of the recess, and The convex portion is formed to be thick in the insertion direction of the bolt, and the screw hole, as the second hole, is drilled from the contact surface along the insertion direction.

3. The display device according to claim 2, wherein, The display panel is provided with an outer recess, the outer recess being recessed to accommodate the bolt head of the bolt passing through the through hole, the outer recess being formed at a portion corresponding to the display-side positioning portion on the outer surface of the display panel on the side opposite to the device housing.

4. The display device according to any one of claims 1 to 3, wherein, A pair of the convex portions serving as the housing-side positioning portions protrude from the respective outer surfaces of a pair of wall portions of the peripheral wall of the device housing that face each other, and A pair of the recesses of the display-side positioning portion are formed on the back surface of the display panel such that a pair of the convex portions respectively cooperate with a pair of the recesses.

5. The display device according to any one of claims 1 to 3, wherein the depth of the concave portion of the display-side positioning portion is less than the length of the housing-side positioning portion from the contact surface.

6. The display device according to claim 4, wherein the depth of the concave portion of the display-side positioning portion is less than the length of the housing-side positioning portion from the contact surface.

Images