Display device

Abstract

The utility model provides a display device, and the display device (100) is provided with a display part (10) which displays an image; a sound emitting body (70) that emits sound; a circuit board (30) electrically connected to the sound generating body (70); a cover member (lower cover (90)) that houses the circuit board (30); and a housing (80) in which a recessed housing part (83) for housing the sound generating body (70) is formed. The rear surface side of the sounding body (70) is covered by the bottom surface (83a) of the housing part (83). According to the display device provided by the utility model, the rear cavity structure of the sounding body can be easily determined.

Description

Technical Field

[0001] The utility model relates to a display device. Background Art

[0002] For example, Patent Document 1 describes a device mounted on a vehicle meter, wherein a sound-generating body such as a speaker is installed inside a housing on the back side of a circuit board. The sound-generating body emits sound to the outside from a sound-generating hole formed on the back side of the housing.

[0003] Prior art literature

[0004] Patent Literature

[0005] Patent Document 1: Japanese Patent Application Publication No. 2018-11237 Utility Model Content

[0006] Issues to be Solved by Utility Models

[0007] In the structure of the device described in Patent Document 1, the space on the back side (opposite to the sound-emitting side) of the sound-emitting body changes according to the structure of the device, that is, the back cavity structure of the sound-emitting body changes. Therefore, in this device, it may take time to adjust the sound structure of the sound-emitting body.

[0008] The utility model is completed in view of the above actual situation, and its purpose is to provide a display device with an easily determined rear cavity structure of a sound-emitting body.

[0009] Means for solving problems

[0010] In order to achieve the above-mentioned object, the display device of the present utility model comprises:

[0011] a display unit that displays an image;

[0012] a sound-producing body, which produces sound;

[0013] A circuit substrate electrically connected to the sound-generating body;

[0014] a cover member that accommodates the circuit substrate; and

[0015] The housing is formed with a concave receiving portion for receiving the sounding body.

[0016] The back side of the sounding body is covered by the bottom surface of the storage portion.

[0017] Utility Model Effect

[0018] According to the utility model, a display device can be provided in which the rear cavity structure of a sound-emitting body is easily determined. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1This is a diagram showing the relationship between a display device and an instrument panel according to one embodiment of the present invention.

[0020] Figure 2 This is a diagram showing the display device according to the above embodiment as viewed from the front.

[0021] Figure 3 It is a perspective view of the support body of the above embodiment.

[0022] Figure 4 This is a perspective view of the support body according to the above embodiment as viewed from the substrate housing portion side.

[0023] Figure 5 The display device of the above embodiment is Figure 2 A schematic cross-sectional view taken along line AA is shown.

[0024] Figure 6 The display device of the above embodiment is Figure 2 A schematic cross-sectional view taken along line BB is shown.

[0025] Figure 7 The display device of the above embodiment is Figure 2 A schematic cross-sectional view taken along line CC is shown together with the instrument panel.

[0026] Figure 8 It is a perspective view of the housing of the above embodiment.

[0027] Fig. 9 This is a perspective view of the housing according to the above embodiment as seen from below, and is a view mainly for explaining a locking portion.

[0028] Fig.10 This is a perspective view of the cover, the housing, and the circuit board according to the above embodiment as seen from below.

[0029] Fig.11 It is a perspective view of the sounding body and the housing of the above embodiment. DETAILED DESCRIPTION

[0030] An embodiment of the present invention will be described with reference to the accompanying drawings.

[0031] The display device 100 is, for example, a vehicle display device. Figure 1 As shown, the dashboard 1 provided in the vehicle reports information related to the vehicle to the user. The information includes not only the information of the vehicle itself (such as information related to the instrument), but also the information outside the vehicle.

[0032] like Figures 1 to 11As shown, the display device 100 includes a display unit 10, a support body 20, a circuit board 30, a flexible member 40, a wiring 50, a conductive member 60, a sounding body 70, a housing 80, and a lower cover 90 as a cover member. Figures 5 to 7 In the figure, hatching lines showing cross sections are omitted in consideration of the visibility of the drawings.

[0033] In appropriate figures, the front Fd, the back Bd, the top Ud, and the bottom Dd are shown as directions for describing the display device 100. For example, the front of the display unit 10 is the direction in which the display unit 10 displays an image, and is the direction of a user who visually recognizes the image relative to the display unit 10.

[0034] The display unit 10 includes a display 11 and a cover glass 12 .

[0035] The display 11 is composed of a liquid crystal display, an organic EL (electroluminescence) display, or the like. The cover glass 12 is composed of organic or inorganic glass and is fixed to the front surface of the display 11. A colored layer such as black is formed on the cover glass 12 to divide the image display area of ​​the display 11. The colored layer is not formed at the opposing portion of the cover glass 12 that is opposed to the image display area of ​​the display 11. The cover glass 12 transmits the light representing the image emitted from the display 11 at the opposing portion.

[0036] In this embodiment, if Figure 2 As shown in FIG. 1 , the front surface of the cover glass 12 (specifically, the front surface of the opposing portion) is the display surface 10a of the display unit 10. In addition, the present invention is not limited to this example, and the display surface 10a only needs to be the frontmost part of the display unit 10 that displays an image. Figure 1 , Figure 7 As shown, the display unit 10 has a display surface 10 a exposed from the instrument panel 1 , and an image is displayed on the display surface 10 a .

[0037] like Figure 7 As shown, in the instrument panel 1, the front portion 1a is a portion located in front of the display unit 10, and the rear portion 1b is a portion located behind the display unit 10. The rear portion 1b is closer to the front windshield of the vehicle (not shown) than the front portion 1a. In this embodiment, the display unit 10 is located between the front portion 1a and the rear portion 1b located above the front portion 1a, and the display surface 10a is exposed from the instrument panel 1.

[0038] Mainly as Figure 3 As shown, the support body 20 includes a cover portion 21 and a standing wall portion 22. In this embodiment, the support body 20 is formed of metal.

[0039] The outer cover 21 is located in the instrument panel 1 and covers the circuit board 30 from above. Figure 3 or Figure 4 As shown, the cover portion 21 includes an upper wall portion 210 , an outer peripheral wall 211 , and a substrate storage portion 212 .

[0040] The upper wall portion 210 is a portion of the cover portion 21 that faces the circuit board 30 in the up-down direction. The upper wall portion 210 has a recessed portion 210 a that is recessed toward the circuit board 30 .

[0041] like Figure 4 As shown, the recess 210a has a first raised portion U1 and a second raised portion U2 that rise from the lower surface 210b of the recess 210a toward the circuit substrate 30. Figure 5 As shown, a first heat conducting plate T1 is arranged on the first raised portion U1 , and a second heat conducting plate T2 is arranged on the second raised portion U2 .

[0042] The outer peripheral wall 211 is provided from the outer edge of the upper wall portion 210 toward the circuit substrate 30, and surrounds the end surface of the circuit substrate 30. Figure 3 As shown, a step portion is provided below the outer peripheral wall 211. The outer peripheral wall 211 surrounds the end surface of the circuit substrate 30 via the step portion.

[0043] In this embodiment, the frontmost portion of the outer peripheral wall 211 surrounding the circuit board 30 is the side wall portion 211a. The side wall portion 211a faces the wiring protection portion 85 described later. The side wall portion 211a has a notch 211b through which a part of the wiring 50 passes.

[0044] The board storage portion 212 stores the circuit board 30 on the lower side of the cover portion 21. Specifically, the board storage portion 212 is a portion including the lower side of the step portion of the outer peripheral wall 211.

[0045] The vertical wall portion 22 stands upward relative to the outer cover portion 21 and supports the display portion 10. The display portion 10 is fixed to the front side of the vertical wall portion 22 and is supported by the vertical wall portion 22. The vertical wall portion 22 is connected to the outer cover portion 21 by a connecting portion 23 provided at the rear end of the upper wall portion 210 of the outer cover portion 21. In this embodiment, the outer cover portion 21, the vertical wall portion 22 and the connecting portion 23 are integrally formed of metal.

[0046] The circuit substrate 30 is a PCB (Printed Circuit Board) on which a control unit (e.g., a microcontroller) for controlling the operation of the display device 100 and other electronic components are mounted. The circuit substrate 30 is fixed to the substrate storage portion 212 of the outer cover 21 by a screw member (not shown) or the like. Hereinafter, of the two surfaces on which circuit elements can be mounted in the circuit substrate 30, the surface facing upward is referred to as a main surface 30a, and the surface facing downward is referred to as a lower surface 30b.

[0047] Figure 4 The circuit board 30 stored in the board storage portion 212 is shown by a dotted line. Figure 4 It can be seen that most of the outer edge of the main surface 30a of the circuit board 30 is in surface contact with the board storage portion 212. That is, at least a part of the outer edge of the main surface 30a is in surface contact with the board storage portion 212.

[0048] like Figure 5 As shown, a heat conducting sheet (a first heat conducting sheet T1 and a second heat conducting sheet T2) is provided between the outer cover portion 21 and the circuit elements (a first circuit element S1 and a second circuit element S2) mounted on the circuit substrate 30. Specifically, as circuit elements, ICs (Integrated Circuits) having different heights from each other, namely, a first circuit element S1 and a second circuit element S2, are mounted on the main surface 30a. For example, the first circuit element S1 is a GDC (Graphics Display Controller), and the second circuit element S2 is a microcontroller. The first circuit element S1 abuts against the first heat conducting sheet T1 provided on the first raised portion U1. The second circuit element S2 abuts against the second heat conducting sheet T2 provided on the second raised portion U2. In the present embodiment, the first heat conducting sheet T1 and the second heat conducting sheet T2 have the same thickness.

[0049] Here, if the thickness of the first heat conducting sheet T1 and the second heat conducting sheet T2 is t, the height of the first circuit element S1 is h1, the height of the second circuit element S2 is h2, the thickness of the first raised portion U1 (the height of the raised portion) is d1, and the thickness of the second raised portion U2 (the height of the raised portion) is d2, then h1+t+d1=h2+t+d2 holds. By providing the first raised portion U1 and the second raised portion U2 in this way, the same sheet can be used for the first heat conducting sheet T1 and the second heat conducting sheet T2.

[0050] The circuit substrate 30 is electrically connected to the display unit 10 via a flexible member 40. The flexible member 40 is composed of an FPC (Flexible Printed Circuits) or an FFC (Flexible Flat Cable), and electrically connects the display 11 of the display unit 10 to the circuit substrate 30. Figure 5As shown, at the rear end portion of the lower surface 30b, a flexible component 40 extending from the display 11 is connected via a connector C1. Here, an insertion hole 24 for passing the flexible component 40 for electrically connecting the display portion 10 (specifically, the display 11) and the circuit substrate 30 is formed between the vertical wall portion 22 of the support body 20 and the outer cover portion 21. The insertion hole 24 is provided below the display 11. In addition, a through hole 31 is formed in the circuit substrate 30 at a position opposite to the insertion hole 24. The flexible component 40, one end of which is electrically connected to the display 11, passes through the insertion hole 24 and the through hole 31, and the other end is electrically connected to the lower surface 30b of the circuit substrate 30 via the connector C1. In this embodiment, although not shown in the figure, there are two flexible components 40, so as shown in FIG. Figure 4 As shown, there are two sets of insertion holes 24 and through holes 31 .

[0051] The circuit substrate 30 is electrically connected to the sounding body 70 via the wiring 50. Figure 6 As shown, the wiring 50 extending from the sounding body 70 is connected to the front end portion of the lower surface 30 b of the circuit board 30 via the connector C2 .

[0052] like Figure 7 As shown, the circuit substrate 30 is located below the display unit 10 in the instrument panel 1 and protrudes forward of the display surface 10 a.

[0053] like Figure 5 As shown, the conductive member 60 is sandwiched between the lower surface 210b of the recessed portion 210a and the circuit substrate 30, and is a conductive member such as metal. Specifically, the conductive member 60 is sandwiched between the lower surface 210b and a ground pattern (not shown) formed on the main surface 30a of the circuit substrate 30, and the ground pattern is electrically connected to the support body 20 formed of metal. Thus, the support body 20, especially the outer cover 21, functions as an electromagnetic wave shield. For example, a plurality of conductive members 60 are provided.

[0054] The conductive member 60 is, for example, a Z-shaped terminal and has elasticity in the vertical direction. The elastic force of the conductive member 60 acts on the lower surface 210b and the circuit substrate 30. Thus, the outer cover 21 can have a shielding function, and the outer cover 21 and the circuit substrate 30 can have a cushioning property.

[0055] like Figure 1 As shown, the sound-generating body 70 is located between the instrument panel 1 and the outer cover 21. The sound-generating body 70 is, for example, a speaker, and emits sound under the control of the control unit. The sound-generating body 70 includes a sound-generating portion 71 as a portion for emitting sound, and the sound-generating portion 71 is provided on the housing 80 in a manner facing upward. Figure 6As shown, the sounding body 70 is arranged in a manner that the sounding portion 71 is exposed from the housing 80. The sounding portion 71 includes the cone of the speaker, and may also include a mesh, grid or slit-shaped speaker cover arranged above the cone. In addition, the sounding body 70 may also be a buzzer.

[0056] The sound emitted from the sound source 70 reaches the user via the space in the instrument panel 1. For example, when a device in which a speaker is provided inside a housing as in the past is mounted in the instrument panel 1, the sound emitted from the speaker passes through the housing and further reaches the user via the instrument panel 1. On the other hand, according to the structure of the display device 100 of the present embodiment, the sound emitted from the sound source 70 reaches the user via the instrument panel 1, so that the sound emitted from the sound source 70 is easy to hear.

[0057] like Figure 1 As shown in FIG. 1 and FIG. 2 , the housing 80 is fixed to the upper side of the cover 21 and accommodates the sounding body 70. The housing 80 is formed of a known resin material in a box shape that is open downward.

[0058] like Figure 8 As shown, the housing 80 includes a rectangular main wall portion 81 , an outer peripheral wall 82 extending downward from the outer edges of four sides corresponding to the main wall portion 81 , a storage portion 83 , a protrusion 84 , a wiring protection portion 85 , and a hook 87 .

[0059] like Figure 7 As shown, the main wall portion 81 is opposed to the front portion 1a of the instrument panel 1 in the vertical direction. A heat dissipation slit 82a for dissipating the heat enclosed between the housing 80 and the outer cover portion 21 is formed on the peripheral wall 82. The heat generated by the first circuit element S1 is transferred to the outer cover portion 21 in the order of the first heat conductive sheet T1 and the first raised portion U1. The heat generated by the second circuit element S2 is transferred to the outer cover portion 21 in the order of the second heat conductive sheet T2 and the second raised portion U2. The heat dissipation slit 82a can release the heat thus transferred to the outer cover portion 21 to the outside.

[0060] The storage portion 83 is a portion that is recessed downward from the main wall portion 81 to match the shape of the sounding body 70. The storage portion 83 functions as a sound box for the sounding body 70. The storage portion 83 has a bottom surface 83a that is opposite to the lower surface of the sounding body 70. Figure 6As shown, the back side of the sound-emitting body 70 (specifically, the back side of the sound-emitting portion 71 of the sound-emitting body 70) is covered by the bottom surface 83a. That is, the portion of the housing portion 83 where the bottom surface 83a is formed functions as a back cavity of the sound-emitting body 70. That is, it can be considered that a sound (a sound wave with a reverse phase) with a phase opposite to that of the sound (a sound wave with a positive phase) emitted from (the front side of) the sound-emitting body 70 is emitted from the back side of the sound-emitting body 70, but if the back side of the sound-emitting body 70 is not covered by the bottom surface 83a, the sound with the reverse phase passes through the open portion of the housing 80 where the bottom surface 83a is not covered, and then is emitted to the outside of the housing 80 through the heat dissipation slit 82a that is connected to the open portion (also functions as a sound emission hole). Therefore, it can be considered that the sound emitted from the sounding body 70 (the front side) is affected by the sound of the opposite phase, and its sound pressure is reduced (weakened), but in this embodiment, the back side of the sounding body 70 is covered by the bottom surface 83a, thereby suppressing the reduction of the sound pressure (the portion forming the bottom surface 83a functions as the back cavity). In addition, the housing 80 is formed with a support portion 88 and a surrounding wall 89 surrounding the support portion 88. Figure 6 As shown, the support portion 88 supports the outer edge of the lower surface of the sounding body 70. The lower surface of the sounding body 70 supported by the support portion 88 is opposed to the bottom surface 83a of the storage portion 83 with a gap therebetween. Fig.11 As shown, the surrounding wall 89 is provided so as to protrude upward from the main wall portion 81 and surround the outer periphery of the sounding body 70 .

[0061] The housing 80 has a plurality of hooks 87 for fixing the sounding body 70. Three hooks 87 of the present embodiment are provided at equal intervals in the circumferential direction of the storage portion 83 formed into a substantially circular shape to match the shape of the sounding body 70. Figure 8 , Fig.11 As shown, the hook 87 located most forward among the three hooks 87 is provided close to the heat dissipation slit 82 a formed in the outer peripheral wall 82 connected to the wiring protection portion 85 .

[0062] like Figure 6 As shown, the plurality of hooks 87 each have an inclined surface 87a that contacts the sounding body 70, and the inclined surface 87a is used to press the sounding body 70 toward the bottom surface 83a (ie, downward). Figure 6 In the figure, only one hook 87 is shown. As a result, the sounding body 70 is pressed against the support portion 88 and stably supported by the support portion 88. Figure 8 As shown, the housing 80 has a threaded member N (see Fig.11) A hole H for fixing the sounding body 70. The hole H is formed in the support portion 88. The hole H may be a bottomed hole or a through hole. In the present embodiment, three holes H are provided at equal intervals in the circumferential direction of the storage portion 83, and are respectively provided between the hooks 87 adjacent to each other in the circumferential direction of the storage portion 83. That is, the sounding body 70 is fixed to the housing 80 by the hooks 87 and the screw member N.

[0063] The protrusion 84 protrudes upward from the main wall 81, that is, toward the instrument panel 1. Four protrusions 84 are provided corresponding to the four corners of the main wall 81. The four protrusions 84 are respectively formed with fitting holes 84a. Figure 7 As shown, the fitting hole 84a is fitted with a protruding member 1c provided from the front portion 1a of the instrument panel 1 toward the housing 80. Although not shown in detail, four protruding members 1c are provided corresponding to the four fitting holes 84a. By fitting the protruding member 1c into the fitting hole 84a, the housing 80 is fixed to the instrument panel 1. As the fitting of the protruding member 1c and the fitting hole 84a, a known fixing method such as press-fitting, hook, clip, etc. can be used. In addition, the fitting hole 84a can be a bottomed hole or a through hole.

[0064] like Figure 6 As shown, the wiring protection portion 85 protects a portion of the wiring 50. The wiring protection portion 85 is formed continuously with the lower end of the outer peripheral wall 82 and is opposed to a portion of the side wall portion 211a of the outer cover portion 21. The wiring 50 passes through the gap G between the outer cover portion 21 and the housing 80 from the sounding body 70 and reaches the circuit substrate 30. Specifically, the wiring protection portion 85 covers the portion of the wiring 50 that faces the circuit substrate 30 from the gap G.

[0065] The wiring protection portion 85 has locking portions 85a and 85b formed on the side of the outer cover portion 21 for locking a portion of the wiring 50. The locking portions 85a and 85b are formed at positions for guiding the wiring 50 extending from the sounding body 70 to the lower surface 30b of the circuit substrate 30, and lock a portion of the wiring 50 by a hook or clip mechanism. Figure 8 As shown in FIG. 8 , a recessed portion 86 is formed in a portion of the outer peripheral wall 82 located above the wiring protection portion 85. Fig. 9 As shown, a locking portion 86 a for locking a part of the wiring 50 is also formed on the lower surface of the recessed portion 86 .

[0066] That is, the housing 80 locks the wiring 50 extending from the sounding body 70 in the order of the locking portion 86a, the locking portion 85a, and the locking portion 85b, and guides it to the lower surface 30b of the circuit substrate 30. Fig.10 As shown, the wire 50 guided in this way passes through the notch 211 b and is connected to the lower surface 30 b of the circuit substrate 30 via the connector C2 .

[0067] like Figure 5 As shown, the lower cover 90 covers the cover portion 21 of the support body 20 from below and is attached to the cover portion 21. The circuit board 30 is located in a space formed between the lower cover 90 and the cover portion 21. That is, the substantially concave lower cover 90 is configured to accommodate the circuit board 30.

[0068] In addition, the present invention is not limited to the above embodiments and drawings. It can be appropriately changed (including deletion of components) within the scope of not changing the main purpose of the present invention. For example, the support body 20 may not be entirely formed of metal, as long as at least the outer cover portion 21 is formed of metal.

[0069] The display device 100 described above can be described from the following viewpoints A to E.

[0070] (A1) A display device according to aspect A of the present invention comprises:

[0071] A display unit having a display surface exposed from a dashboard of the vehicle and displaying an image on the display surface;

[0072] a circuit substrate located in the instrument panel;

[0073] a support body including an outer cover portion located in the instrument panel and covering the circuit substrate from above, and an upright wall portion standing upward relative to the outer cover portion, and supporting the display portion via the upright wall portion; and

[0074] The sound-generating body is located between the instrument panel and the outer cover.

[0075] According to this structure, the sound emitted from the sound source reaches the user via the instrument panel, so it is easy to hear the sound emitted by the sound source. In addition, the sound source is not directly visible to the user, so the appearance quality is good.

[0076] (A2) The display device according to Aspect A further includes a housing that is fixed to an upper side of the cover portion and accommodates the sound emitting body.

[0077] According to this structure, it is easy to assemble the sounding body to the housing.

[0078] (A3) The housing is provided with a fitting hole which fits with a protruding member provided from the instrument panel toward the housing.

[0079] According to this structure, the housing or the display device can be easily fixed to the instrument panel.

[0080] (A4) The housing comprises:

[0081] a main wall portion, which is opposed to the instrument panel in the up-down direction;

[0082] a storage portion, which is recessed downward from the main wall portion and stores the sound-emitting body; and

[0083] a protrusion that protrudes upwards further than the main wall portion,

[0084] The fitting hole is formed in the protrusion.

[0085] According to this structure, the housing or the display device can be fixed to the instrument panel more easily.

[0086] (B1) A display device according to aspect B of the present invention comprises:

[0087] A display unit having a display surface exposed from a dashboard of the vehicle and displaying an image on the display surface;

[0088] a circuit substrate located in the instrument panel;

[0089] a support body having an outer cover portion located in the instrument panel and covering the circuit substrate from above, and an upright wall portion standing upward relative to the outer cover portion, and supporting the display portion through the upright wall portion;

[0090] a sound-generating body, which is located between the instrument panel and the outer cover;

[0091] a housing fixed to the upper side of the outer cover and accommodating the sounding body; and wiring electrically connecting the sounding body to the circuit substrate,

[0092] The wiring extends from the sounding body through a gap between the cover and the housing and reaches the circuit board.

[0093] The housing has a wiring protection portion that covers a portion of the wiring that faces the circuit substrate from the gap.

[0094] According to this configuration, the sound emitted by the sounding body can be easily heard, and the appearance quality is good, similarly to the viewpoint A. Furthermore, the wiring can be protected from the outside of the device by the wiring protection portion.

[0095] (B2) A locking portion for locking a part of the wiring is formed on the wiring protection portion on the cover portion side.

[0096] According to this structure, the wiring can be easily handled.

[0097] (B3) The wiring extends from the sound-emitting body through the gap and is connected to the lower surface of the circuit board.

[0098] According to this structure, the lower surface of the circuit board can be used efficiently.

[0099] (B4) at least the outer cover portion of the support body is formed of metal,

[0100] The outer cover has a side wall portion facing the wiring protection portion.

[0101] The side wall portion has a notch formed therein for allowing a portion of the wiring to pass therethrough.

[0102] According to this configuration, the cover portion can have an electromagnetic wave shielding function and a path for the wiring to the circuit board can be ensured.

[0103] (C1) A display device according to aspect C of the present invention comprises:

[0104] A display unit having a display surface exposed from a dashboard of the vehicle and displaying an image on the display surface; and

[0105] A circuit substrate is located below the display unit in the instrument panel, protrudes forward of the display surface, and is electrically connected to the display unit.

[0106] According to this structure, it is possible to suppress the generation of ineffective space behind the display unit in the instrument panel. For example, a device such as a HUD (Head-Up Display) is sometimes provided behind the display unit (i.e., between the display unit and the front windshield), so it is meaningful to ensure the space behind the display unit.

[0107] (C2) The display device of viewpoint C further includes a support body having an outer cover portion located in the instrument panel and covering the circuit substrate from above, and a vertical wall portion rising upward relative to the outer cover portion, and supporting the display portion by the vertical wall portion.

[0108] At least the outer cover portion of the support body is formed of metal,

[0109] The outer cover has a substrate storage portion for storing the circuit substrate at a lower side of the outer cover.

[0110] The circuit substrate has a main surface facing upward.

[0111] At least a portion of an outer edge of the main surface is in surface contact with the substrate housing portion.

[0112] According to this structure, the gap between the cover and the circuit board can be reduced, and the cover can further better perform the electromagnetic wave shielding function.

[0113] (C3) the outer cover has an upper wall portion facing the main surface,

[0114] The upper wall portion has a recessed portion recessed toward the circuit substrate.

[0115] According to this configuration, a recessed portion for heat dissipation can be ensured in the cover portion that performs the shielding function.

[0116] (C4) the recess has a first raised portion and a second raised portion raised from a lower surface of the recess toward the circuit substrate,

[0117] A first circuit element abutting against a first heat conducting sheet provided on the first raised portion and a second circuit element abutting against a second heat conducting sheet provided on the second raised portion are mounted on the main surface.

[0118] The first protrusion and the second protrusion are at different distances from the circuit substrate.

[0119] The first heat conducting sheet and the second heat conducting sheet have the same thickness.

[0120] According to this configuration, a common sheet can be used for the first thermally conductive sheet and the second thermally conductive sheet.

[0121] (C5) The display device of aspect C further includes a conductive member which is sandwiched between the lower surface of the recess and the ground pattern formed on the main surface of the circuit substrate and has elasticity.

[0122] The elastic force of the conductive component acts on the lower surface and the circuit substrate respectively.

[0123] According to this configuration, the cover portion can have a shielding function, and the cover portion and the circuit board can each have a cushioning property.

[0124] (C6) the support is formed of metal,

[0125] An insertion hole through which a flexible member that electrically connects the display unit and the circuit board is inserted is formed between the upright wall portion and the cover portion of the support body.

[0126] According to this structure, the flexible member can be easily protected.

[0127] (D1) A display device according to aspect D of the present invention comprises:

[0128] a display unit that displays an image;

[0129] a sound-producing body, which produces sound;

[0130] A circuit substrate electrically connected to the sound-generating body;

[0131] a cover member that accommodates the circuit substrate; and

[0132] The housing is formed with a concave receiving portion for receiving the sounding body.

[0133] The back side of the sounding body is covered by the bottom surface of the storage portion.

[0134] According to this configuration, the structure of the rear surface side of the sound-emitting body can be determined by the structure of the outer shell for the sound-emitting body, so that the rear cavity structure of the sound-emitting body can be easily determined.

[0135] (D2) The housing has a plurality of hooks for fixing the sound-generating body.

[0136] According to this structure, the sounding body can be easily assembled to the housing.

[0137] (D3) Each of the plurality of hooks has an inclined surface that contacts the sound-generating body, and the sound-generating body is pressed toward the bottom surface by the inclined surface.

[0138] According to this structure, the sound-emitting body can be stably fixed to the housing.

[0139] (D4) the housing has a main wall portion on which the storage portion is formed and an outer peripheral wall connected to the main wall portion,

[0140] Heat dissipation slits are formed on the outer peripheral wall.

[0141] According to this structure, the heat enclosed in the housing can be released through the heat dissipation slits. In addition, as described above, the back side of the sound-emitting body is covered by the bottom surface of the storage portion, so even if the heat dissipation slits are provided in this way, it is possible to prevent the reverse-phase sound waves generated by the sound-emitting body from leaking to the outside through the heat dissipation slits and interfering with the normal-phase sound waves to reduce the sound pressure.

[0142] (D5) The housing has a hole for fixing the sound-generating body by a screw member.

[0143] According to this structure, the sounding body can be fixed to the housing more firmly.

[0144] (E1) The display device according to aspect E of the present invention comprises:

[0145] a display unit that displays an image;

[0146] a circuit substrate electrically connected to the display portion;

[0147] a support body including an outer cover portion covering the circuit substrate from above and an upright wall portion standing upward relative to the outer cover portion, and supporting the display portion via the upright wall portion; and

[0148] a housing fixed to the upper side of the outer cover portion,

[0149] At least the outer cover portion of the support body is formed of metal,

[0150] Heat dissipation slits are formed on the housing.

[0151] According to this structure, the heat generated by the circuit board can be transferred to the housing via the metal cover portion and released to the outside through the heat dissipation slits. Therefore, the heat generated by the circuit board can be well released to the outside.

[0152] (E2) The heat dissipation slit is formed on the outer peripheral wall of the housing.

[0153] According to this structure, the area other than the outer peripheral wall of the housing can be effectively utilized. For example, a storage portion for storing the sounding body can be formed on the main wall portion of the housing as described above.

[0154] (E3) A heat conductive sheet is provided between the outer cover and the circuit element mounted on the circuit substrate.

[0155] According to this configuration, the heat generated by the circuit board can be efficiently transferred to the cover.

[0156] Furthermore, the display devices according to aspects D and E of the present invention may be mounted on transportation vehicles other than vehicles (construction machinery, airplanes, ships, etc.).

[0157] In the above description, in order to facilitate understanding of the present invention, descriptions of well-known technical features are appropriately omitted.

[0158] The present invention can be implemented in various embodiments and variations without departing from the broad spirit and scope of the present invention. In addition, the embodiments are used to illustrate the present invention and do not limit the scope of the present invention. That is, the scope of the present invention is not represented by the embodiments, but by the claims. Moreover, various variations implemented within the scope of the claims and the utility model meanings equivalent thereto are deemed to be within the scope of the present invention.

[0159] Explanation of symbols

[0160] 100: display device; 1: instrument panel; 1a: front portion; 1b: rear portion; 1c: protruding member; 10: display portion; 10a: display surface; 11: display; 12: cover glass; 20: support body; 21: cover portion; 210: upper wall portion; 210a: recessed portion; 210b: lower surface; U1: first raised portion; U2: second raised portion; T1: first heat conducting sheet; T2: second heat conducting sheet; 211: outer peripheral wall; 211a: side wall portion; 211b: notch; 212: substrate storage portion; 22: vertical wall portion; 23: connecting portion; 24: insertion hole; 30: circuit substrate; 31: through hole; 30a: main surface; S1: second A circuit element; S2: a second circuit element; 30b: a lower surface; 40: a flexible component; C1: a connector; 50: wiring; C2: a connector; 60: a conductive component; 70: a sound-generating body; 71: a sound-generating portion; 80: a housing; 81: a main wall portion; 82: a peripheral wall; 82a: a heat dissipation slit; 83: a storage portion; 83a: a bottom surface; 84: a protrusion; 84a: a fitting hole; 85: a wiring protection portion; 85a, 85b: a locking portion; G: a gap; 86: a recessed portion; 86a: a locking portion; 87: a hook; 87a: an inclined surface; 88: a supporting portion; 89: a surrounding wall; H: a hole; N: a threaded component; 90: a lower outer cover (an outer cover component).

Claims

1. A display device, characterized in that: The display device comprises: a display unit that displays an image; a sound-producing body, which produces sound; A circuit substrate electrically connected to the sound-generating body; a cover member that accommodates the circuit substrate; and The housing is formed with a concave receiving portion for receiving the sounding body. The back side of the sounding body is covered by the bottom surface of the storage portion.

2. The display device according to claim 1, characterized in that The housing has a plurality of hooks for fixing the sounding body.

3. The display device according to claim 2, characterized in that: The plurality of hooks each have an inclined surface that contacts the sound-generating body, and the plurality of hooks press the sound-generating body toward the bottom surface using the inclined surface.

4. The display device according to any one of claims 1 to 3, characterized in that: The housing includes a main wall portion on which the storage portion is formed, and an outer peripheral wall connected to the main wall portion. Heat dissipation slits are formed in the outer peripheral wall.

5. The display device according to any one of claims 1 to 3, characterized in that: The housing has a hole for fixing the sounding body by a screw member.

Images