Display device
By designing an asymmetrical rigid bracket and selecting appropriate materials in the display device, the impact load distribution was optimized, thus solving the problem of passenger injury during a collision and improving safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- SHANGHAI TIANMA MICRO ELECTRONICS CO LTD
- Filing Date
- 2023-06-16
- Publication Date
- 2026-06-05
Smart Images
Figure CN117292629B_ABST
Abstract
Description
[0001] Cross-references to related applications
[0002] This application claims the benefit of Japanese Patent Application No. 2022-100829, filed on June 23, 2022, and Japanese Patent Application No. 2023-019683, filed on February 13, 2023, the entire disclosure of which is incorporated herein by reference. Technical Field
[0003] This disclosure generally relates to a display device. Background Technology
[0004] To improve passenger safety (crew members, passengers, etc.) on vehicles and trains, it is necessary to reduce the harm caused to passengers by display devices provided in vehicles and trains. For example, the European vehicle standard (ECE-R21: United Nations Economic Commission for Europe (UN / ECE) Regulation No. 21) includes standards for head deceleration when a head shape similar to a passenger's head impacts a display device. ECE-R21 states that, for example, when a head shape impacts a display device, the head deceleration must not exceed 80G and the duration must not exceed 3ms.
[0005] Furthermore, dashboard structures are known to mitigate the impact on occupants from displays located in the vehicle's driver's compartment during a vehicle collision. For example, unexamined Japanese Patent Application Publication No. 2013-144523 discloses a dashboard structure including a dashboard reinforcement located at the rear of the dashboard, a cylindrical fixing member fixed to the dashboard reinforcement, a bearing member mounted on the fixing member, and a support member supported by the fixing member via the bearing member. A display located on the dashboard is fixed to the rear end of the support member in the vehicle's longitudinal direction. The support member is supported by the fixing member so that it can slide axially along the fixing member when an impact load is applied to the display. In the dashboard structure of unexamined Japanese Patent Application Publication No. 2013-144523, the support member to which the display is fixed slides axially along the fixing member to mitigate the impact on the occupants from the display.
[0006] In the dashboard structure of the unexamined Japanese patent application publication number 2013-144523, fixing members, bearing members and support members are required to provide a display in the driver's cab, and the configuration is complicated.
[0007] This disclosure is made in view of the above circumstances, and the purpose of this disclosure is to provide a display device with higher user security. Summary of the Invention
[0008] The display device of this disclosure for achieving the above objectives includes:
[0009] A display, comprising a display surface; and
[0010] A stand, which is mounted on the surface of the monitor opposite to the display surface, and secures the monitor to a fixed target.
[0011] When the display device is fixed to a fixed target, the rigidity of the impact on the display device is asymmetrical when the impacting object impacts the display surface through the center of the display area and perpendicular to the center line of the display area.
[0012] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory, and not intended to limit this disclosure.
[0013] According to this disclosure, when the display device is fixed to a fixed target, the rigidity of the impact on the display device is asymmetrical, and therefore, the time for the impacting body to decelerate is shortened, and user safety is enhanced. Attached Figure Description
[0014] A more complete understanding of this application can be obtained by considering the following detailed description in conjunction with the accompanying drawings, wherein:
[0015] Figure 1 This is a plan view showing the display device according to Embodiment 1;
[0016] Figure 2 yes Figure 1 The display device shown is a cross-sectional view taken along line AA;
[0017] Figure 3 This is a cross-sectional view showing the display according to Embodiment 1;
[0018] Figure 4 This is a plan view showing the liquid crystal display panel according to Embodiment 1;
[0019] Figure 5 This is a plan view showing the bracket according to Embodiment 1;
[0020] Figure 6 yes Figure 5 The cross-sectional view of the bracket taken along line BB is shown;
[0021] Figure 7 This is a cross-sectional view showing the openings of the impactor and the support according to Embodiment 1;
[0022] Figure 8 This is a graph showing the deceleration of the impactor in Example 1;
[0023] Figure 9This is a schematic diagram used to explain the change in deceleration of the impactor according to Embodiment 1;
[0024] Figure 10 This is a schematic diagram used to explain the change in deceleration of the impactor according to Embodiment 1;
[0025] Figure 11 This is a diagram showing the dimensions of various components of the display device according to Embodiment 1;
[0026] Figure 12 This is a diagram showing the dimensions of various components of the display device according to Embodiment 1;
[0027] Figure 13 This is a graph showing the deceleration of the impactor according to the comparative example;
[0028] Figure 14 This is a graph showing the deceleration of the impactor according to Embodiment 1;
[0029] Figure 15 This is a graph showing the deceleration of the impactor according to Embodiment 1;
[0030] Figure 16 This is a perspective view showing the bracket according to Embodiment 2;
[0031] Figure 17 This is a cross-sectional view showing the display device according to Embodiment 2;
[0032] Figure 18 This is a cross-sectional view showing the display device according to Embodiment 3;
[0033] Figure 19 This is a plan view showing the bracket according to Embodiment 4;
[0034] Figure 20 yes Figure 19 The cross-sectional view of the bracket shown is taken along line CC;
[0035] Figure 21 This is a cross-sectional view showing the openings of the impactor and the support according to Embodiment 4;
[0036] Figure 22 This is a schematic diagram used to explain the change in deceleration of the impactor according to Example 4;
[0037] Figure 23 This is a schematic diagram used to explain the change in deceleration of the impactor according to Example 4;
[0038] Figure 24 This is a plan view showing the display device according to Embodiment 5;
[0039] Figure 25 yes Figure 24The diagram shows a cross-sectional view of the display device taken along line DD;
[0040] Figure 26 This is a plan view showing the display device according to Embodiment 6;
[0041] Figure 27 yes Figure 26 The diagram shows a cross-sectional view of the display device taken along line EE;
[0042] Figure 28 This is a plan view showing the display device according to Embodiment 7;
[0043] Figure 29 yes Figure 28 The diagram shows a cross-sectional view of the display device taken along line FF;
[0044] Figure 30 This is a plan view showing the display device according to Embodiment 8;
[0045] Figure 31 yes Figure 30 The diagram shown is a cross-sectional view of the display device taken along line GG.
[0046] Figure 32 This is a plan view showing the housing and adhesive component according to Embodiment 8;
[0047] Figure 33 yes Figure 32 The cross-sectional view of the outer shell and adhesive components taken along line JJ is shown.
[0048] Figure 34 This is a schematic diagram used to explain the change in deceleration of the impactor according to Example 8;
[0049] Figure 35 This is a schematic diagram used to explain the change in deceleration of the impactor according to Example 8;
[0050] Figure 36 This is a graph showing the deceleration of the impactor according to Embodiment 9;
[0051] Figure 37 This is a graph showing the deceleration of the impactor according to Embodiment 9;
[0052] Figure 38 This is a graph showing the deceleration of the impactor according to Embodiment 9;
[0053] Figure 39 This is a cross-sectional view showing a display device according to Embodiment 10;
[0054] Figure 40 This is a diagram showing the dimensions of various components of the display device according to Embodiment 10;
[0055] Figure 41 This is a diagram showing the dimensions of various components of the display device according to Embodiment 10;
[0056] Figure 42 This is a schematic diagram used to explain the change in deceleration of the impactor according to Embodiment 10;
[0057] Figure 43 This is a schematic diagram used to explain the change in deceleration of the impactor according to Embodiment 10; and
[0058] Figure 44 This is a cross-sectional view of a display device based on a modified example. Detailed Implementation
[0059] In the following description, display devices according to various embodiments are described with reference to the accompanying drawings.
[0060] Example 1
[0061] Reference Figures 1 to 15 The display device 10 according to this embodiment will be described. The display device 10 is installed in vehicles, aircraft, home appliances, furniture, etc. In this embodiment and the following embodiments, an example of the display device 10 being installed in a vehicle is described.
[0062] like Figure 1 and Figure 2 As shown, the display device 10 is mounted in and fixed to the opening portion 510 of the instrument panel 500 of the vehicle. In one example, the instrument panel 500 is formed of resin, and the opening portion 510 has a rectangular shape. The instrument panel 500 corresponds to a fixed target.
[0063] In this embodiment, as described later, when the impactor Q impacts the display surface 100a passing through the center P0 of the display area 112 of the display 100 and perpendicular to the centerline S1 of the display area 112, the rigidity of the impact on the display device 10 fixed to the dashboard 500 is asymmetrical. In one example, the impactor Q is a head shape similar to a passenger's head. In this embodiment and the following embodiments, examples of the display device 10 are described, wherein the impactor (head shape) Q has a spherical shape with a diameter (i.e., the maximum width in one direction) of QD. Furthermore, the passenger corresponds to the user.
[0064] The display device 10 includes a display 100 and a bracket 200. The display 100 displays characters, images, etc. The bracket 200 secures the display device 10 in the opening 510 of the dashboard 500. Note that, for ease of understanding, in this specification, the passenger-side surface of the display 100 is defined as the display surface 100a of the display 100. Furthermore, with the impact position P1 where the impactor Q impacts the display surface 100a as the origin, in... Figure 1 In the display device 10, the horizontal direction (downward on the paper) is called the "+X direction", the vertical direction (leftward on the paper) is called the "+Y direction", and the direction perpendicular to the +X and +Y directions (depth direction on the paper, the side opposite to the passenger) is called the "+Z direction".
[0065] like Figure 1 and Figure 2 As shown, the display 100 of the display device 10 is fixed to the inner wall 510a of the opening portion 510 via a bracket 200. As... Figure 3 As shown, the display 100 includes a liquid crystal display panel 110, a backlight 120, a housing 130, and a cover 140. Note that, for ease of understanding, in... Figure 3 The shading line of the outer shell 130 is omitted.
[0066] In one example, the liquid crystal display panel 110 of the display 100 is implemented as a transmissive liquid crystal display panel, which is an active matrix driven by thin-film transistors (TFTs). The liquid crystal display panel 110 displays characters, images, etc., by modulating light from the backlight 120. Figure 4 As shown, the liquid crystal display panel 110 includes a display area 112 and a periphery 114. The display area 112 is an area where pixels PX are arranged in a matrix and can display characters, images, etc. The periphery 114 is an area in which wiring, driving circuits, etc., are disposed. Figure 3 and Figure 4 As shown in this specification, a line passing through the center P0 of the display area 112 and perpendicular to the display area 112 is defined as the center line S1.
[0067] like Figure 3 As shown, the backlight 120 of the display 100 is disposed on the back side (+Z side) of the liquid crystal display panel 110. The backlight 120 is the light source of the liquid crystal display panel 110 and emits white light onto the liquid crystal display panel. The backlight 120 includes a white light-emitting diode (LED), a reflector, a diffuser, an illumination circuit, etc. (none of which are shown in the figures).
[0068] The housing 130 of the display 100 houses the liquid crystal display panel 110 and the backlight 120. The housing 130 includes a chassis 132 and a bezel 136.
[0069] The chassis 132 has a box-like shape and is formed of resin or metal. The chassis 132 houses the liquid crystal display panel 110 and the backlight 120 on its inner side. The liquid crystal display panel 110 and the backlight 120 are disposed on the bottom of the chassis 132. A support 200 is disposed on the bottom surface 133 of the chassis 132. In this embodiment, the bottom surface 133 of the chassis 132 corresponds to the surface 100b of the display 100 opposite to the display surface 100a.
[0070] The bezel 136 has a box-like shape. An opening 138 is provided on the bottom 137 of the bezel 136. In one example, the bezel 136 is formed of metal. The bezel 136 covers the chassis 132, with the bottom 137 facing the -Z side. The bezel 136 protects the periphery 114 of the liquid crystal display panel 110. The display area 112 of the liquid crystal display panel 110 is exposed through the opening 138.
[0071] In one example, the cover 140 of the display 100 is formed into a rectangle from a light-transmitting resin. The cover 140 is attached to the housing 130 (bottom 137 of the bezel 136) via an adhesive member 142. The cover 140 protects the liquid crystal display panel 110. The adhesive member 142 is implemented as an adhesive, double-sided tape, etc. The adhesive member 142 is located on the bottom 137 of the bezel 136 (corresponding to the portion of the top surface of the side panel of the housing 130). The space between the cover 140 and the liquid crystal display panel 110 is filled with a light-transmitting adhesive 144 (e.g., optically clear adhesive (OCA)). In this embodiment, the surface 140a on the -Z side (passenger side) of the cover 140 corresponds to the display surface 100a of the display 100. Furthermore, the impactor Q impacts the display surface 100a (surface 140a of cover 140) of display 100 on center line S1, and therefore, the intersection of center line S1 and display surface 100a (surface 140a) corresponds to the impact position P1 of impactor Q impacting display surface 100a.
[0072] The bracket 200 of the display device 10 is used to fix the display device 10 (display 100) in the opening portion 510 of the dashboard 500 via an adhesive (not shown). The bracket 200 is attached to the surface 100b (bottom surface 133 of the chassis 132) of the display 100 opposite to the display surface 100a via adhesive. Furthermore, the outer peripheral surface 200a of the bracket 200 is attached to the inner wall 510a of the opening portion 510 of the dashboard 500 via adhesive.
[0073] The support 200 is formed of metal (e.g., stainless steel) or resin. For example... Figure 5 and Figure 6As shown, the external shape of the bracket 200 is a frame shape that matches the internal shape of the opening portion 510 of the dashboard 500. Furthermore, a rectangular opening portion 210 is provided in the central portion of the bracket 200.
[0074] In this embodiment, when the display device 10 is viewed from above, the position of the center P2 of the opening on the display 100 side (-Z side) of the opening portion 210 is offset from the position of the center P0 of the display area 112 in the -X direction. The position of the center P2 of the opening on the display 100 side of the opening portion 210 is offset from the position of the center P0 of the display area 112, and the bracket 200 fixes the display 100 in the opening portion 510 of the dashboard 500. Thus, when the impact body Q impacts the display surface 100a through the center P0 of the display area 112 and perpendicular to the centerline S1 of the display area 112, the rigidity of the impact on the bracket 200 (i.e., the display device 10) fixed to the dashboard 500 is asymmetrical (asymmetrical in the X direction). More specifically, in the bracket 200 (display device 10), the rigidity of the +X side relative to the centerline S1 is higher than the rigidity of the -X side relative to the centerline S1.
[0075] like Figure 7 As shown, the width D1 of the opening 210 on the display 100 side in one direction (X direction) is less than the maximum width QD of the impactor Q in one direction (X direction). Therefore, it is possible to prevent the impactor Q from penetrating the display device 10. Note that in Figure 7 The shaded lines of the impactor Q and the display 100 are omitted in the attached figures. The shaded lines of the display 100, the impactor Q, etc., may also be omitted in the following figures.
[0076] Next, refer to Figures 7 to 15 Simultaneously, the deceleration of the impactor Q is described when it impacts the display surface 100a on the center P0 of the display area 112 and perpendicular to the centerline S1 of the display area 112. Here, the deceleration of the impactor Q is described as an example of a spherical impactor Q moving from the -Z side on the centerline S1 and impacting the display surface 100a on the centerline S1. Figure 6 As shown.
[0077] Figure 8 The deceleration of the impactor Q is shown. Figure 8In this diagram, the deceleration in the X, Y, and Z directions each represent the deceleration in each direction. Among the X, Y, and Z direction decelerations, a positive value indicates a + direction deceleration (e.g., +X direction deceleration), and a negative value indicates a - direction deceleration (e.g., -X direction deceleration). Combined deceleration represents the deceleration obtained by combining the X, Y, and Z direction decelerations.
[0078] like Figure 8 As shown, when the impactor Q impacts the display surface 100a (impact position P1) on the centerline S1, in the first time period, a deceleration occurs in the +Z direction due to the bending of the display 100, and two peaks corresponding to the configuration of the display 100 appear in the +Z direction deceleration and the combined deceleration. In the second time period following the first time period, the rigidity on the +X side of the bracket 200 is higher than the rigidity on the -X side, and therefore, initially, the load caused by the impactor Q is mainly applied to the +X side of the bracket 200, as... Figure 9 As shown. The result is as follows. Figure 8 As shown, deceleration occurs in the +Z and +X directions. Next, because the rigidity of the +X side of the support 200 is higher than that of the -X side, the impactor Q moves to the -X side, and the load caused by the impactor Q is mainly applied to the -X side of the support 200, as... Figure 10 As shown. The result is as follows. Figure 8 As shown, deceleration occurs simultaneously in the +Z direction and the -X direction. Specifically, the direction of the main applied load changes over time, and the X-direction deceleration fluctuates from the +X direction to the -X direction. As a result, two peaks appear in the combined deceleration, and therefore, the periods t1 and t2 during which the combined deceleration continuously exceeds the reference value can be shortened, i.e., the amount of time during which the deceleration of the impactor Q is larger.
[0079] Next, a more specific example will be used to describe the deceleration of the impactor Q. In one example, the dimensions of the various components of the display device 10 in this embodiment are as follows: Figure 11 and Figure 12As shown (the outer shape of the cover 140 of the housing 130 and the outer shape of the frame 136: 180mm × 278mm, the opening portion 138 of the frame 136: 174mm × 272mm, the outer shape of the bracket 200: 182mm × 280mm, the opening portion of the bracket 200: 140mm × 238mm, and the offset α between the position of the center P0 of the display area 112 and the position of the center P2 of the opening: 1mm, 2mm). The display device 10 is fixed in the opening portion 510 of the dashboard 500. Then, using an impact tester, a spherical impactor Q with a diameter (maximum width) QD of 165mm and a weight of 6.8kg is moved from the -Z side at a speed of 24.1km / h along the centerline S1 and impacts the display surface 100a on the centerline S1 (impact position P1).
[0080] When the position of the center P0 of the display area 112 is not offset from the position of the center P2 of the opening of the opening portion 210 ( Figure 13 For comparison (α = 0 mm), the duration tmax0 of the combined deceleration continuously exceeding the reference value is set to 100%. The offset α between the center P0 of the display area 112 and the center P2 of the opening is 1 mm. Figure 14 In the case of ), the longest duration tmax1 of the combined deceleration continuously exceeding the reference value is 87% of tmax0. The offset α between the center P0 of the display area 112 and the center P2 of the opening is 2mm. Figure 15 In the case of ), the longest duration tmax2 of the combined deceleration continuously exceeding the reference value is 91% of tmax0. Therefore, the display device 10 of this embodiment can shorten the duration of the large deceleration of the impact body Q.
[0081] As described above, when the display device 10 is viewed from above, the position of the center P2 of the opening 210 of the bracket 200 on the display 100 side is offset from the position of the center P0 of the display area 112. Therefore, when the impact body Q impacts the display surface 100a passing through the center P0 of the display area 112 and perpendicular to the centerline S1 of the display area 112, the rigidity of the impact on the display device 10 (bracket 200) fixed to the dashboard 500 is asymmetrical. Therefore, the display device 10 can shorten the time of deceleration of the impact body Q. Thus, the display device 10 can enhance passenger safety.
[0082] Example 2
[0083] In Embodiment 1, the bracket 200 includes an opening 210. One possible configuration is where the bracket 200 includes a recess 220 instead of an opening 210. Similar to the display device 10 of Embodiment 1, the display device of this embodiment includes a display 100 and a bracket 200. The display device 10 of this embodiment is fixed in the opening 510 of the dashboard 500. The configuration of the display 100 in this embodiment is the same as that of the display 100 in Embodiment 1; therefore, the bracket 200 of this embodiment is described.
[0084] Similar to the bracket 200 in Embodiment 1, the bracket 200 of this embodiment is attached to the surface 100b of the display 100 (bottom surface 133 of the chassis 132) by an adhesive. Furthermore, the outer peripheral surface 200a of the bracket 200 of this embodiment is adhered to the inner wall 510a of the opening portion 510 of the dashboard 500 by an adhesive.
[0085] like Figure 16 and Figure 17 As shown, the bracket 200 of this embodiment has a rectangular shape that matches the internal shape of the opening 510 of the dashboard 500. The bracket 200 of this embodiment includes a recess 220 on the surface 200b opposite to the display 100. The recess 220 has a rectangular shape.
[0086] Similar to the position of the center P2 of the opening of the opening portion 210 in Embodiment 1, when the display device 10 is viewed from above, the position of the center P3 of the opening of the recess 220 in this embodiment is offset from the position of the center P0 of the display area 112 in the -X direction. Therefore, in this embodiment, as in Embodiment 1, when the impact body Q impacts the display surface 100a through the center P0 of the display area 112 and perpendicular to the center line S1 of the display area 112, the rigidity of the impact on the bracket 200 (display device 10) fixed to the dashboard 500 is asymmetrical.
[0087] The width D2 of the opening of the recess 220 in one direction (X direction) is less than the maximum width QD of the impactor Q in one direction (X direction). Therefore, as in Embodiment 1, the impactor Q can be prevented from penetrating the display device 10.
[0088] As in Embodiment 1, when the impactor Q impacts the display surface 100a at a point passing through the center P0 of the display area 112 and perpendicular to the centerline S1 of the display area 112, the rigidity of the impact on the display device 10 (support 200) fixed to the dashboard 500 is asymmetrical. Therefore, the display device 10 of this embodiment can shorten the time during which the impactor Q decelerates significantly. Consequently, the display device 10 of this embodiment can also improve passenger safety.
[0089] Example 3
[0090] In embodiment 2, the support 200 includes a recess 220 having a rectangular shape. Furthermore, the width D2 of the opening of the recess 220 in one direction (X direction) is less than the maximum width QD of the impactor Q in one direction (X direction). However, the shape of the recess 20 is not limited to rectangle, and a configuration is possible where the minimum width D3min of the recess 220 in one direction is less than the maximum width QD of the impactor Q in one direction.
[0091] Similar to the display device 10 in Embodiments 1 and 2, the display device 10 in this embodiment includes a display 100 and a bracket 200, and is fixed in the opening portion 510 of the dashboard 500. The configuration of the display 100 in this embodiment is the same as that of the display 100 in Embodiment 1, and therefore, the bracket 200 in this embodiment is described.
[0092] Similar to the bracket 200 in Embodiment 2, the bracket 200 in this embodiment is attached to the surface 100b of the display 100 (bottom surface 133 of the chassis 132) by an adhesive. Furthermore, the outer peripheral surface 200a of the bracket 200 in this embodiment is adhered to the inner wall 510a of the opening portion 510 of the dashboard 500 by an adhesive.
[0093] The bracket 200 in this embodiment has a rectangular shape that matches the internal shape of the opening 510 of the dashboard 500. For example... Figure 18 As shown, the bracket 200 of this embodiment includes a recess 230 on a surface 200b opposite to the display 100.
[0094] Similarly, in this embodiment, when the display device 10 is viewed from above, the position of the center P3 of the opening of the recess 220 is the same as that of the center P3 of the recess 220 in Embodiment 2, but the position of the center P3 of the opening of the recess 230 is offset from the position of the center P0 of the display area 112 in the -X direction. Therefore, in this embodiment, as in Embodiment 1, when the impactor Q impacts the display surface 100a through the center P0 of the display area 112 and perpendicular to the center line S1 of the display area 112, the rigidity of the impact on the bracket 200 (display device 10) fixed to the dashboard 500 is asymmetrical.
[0095] When viewed in a cross-section (XZ section) including one direction (X direction), the recess 230 has a trapezoidal shape, and the width D3 of the recess 230 in one direction (X direction) narrows towards the direction opposite to the display 100 (+Z direction). In this embodiment, the width D2 of the opening of the recess 230 in one direction (X direction) is greater than the maximum width QD of the impactor Q in one direction (X direction). Furthermore, the minimum width D3min of the recess 230 in one direction (X direction) (the width of the bottom surface 230a of the recess 230) is less than the maximum width QD of the impactor Q in one direction (X direction). Note that, also in this embodiment, the width D2 of the opening of the recess 230 corresponds to the maximum width of the recess 230 in one direction (X direction).
[0096] In this embodiment, the minimum width D3min of the recess 230 in one direction (X direction) is less than the maximum width QD of the impactor Q in one direction (X direction), and therefore, the impactor Q can be prevented from penetrating the display device 10.
[0097] Similar to Embodiments 1 and 2, when the impactor Q impacts the display surface 100a at a point passing through the center P0 of the display area 112 and perpendicular to the centerline S1 of the display area 112, the rigidity of the impact on the display device 10 (support 200) fixed to the dashboard 500 is asymmetrical. Therefore, the display device 10 of this embodiment can shorten the time during which the impactor Q decelerates significantly. Furthermore, by adjusting the width D3 of the recess 230, even for a small impact from the impactor Q, the display device 10 of this embodiment can shorten the time during which the impactor Q decelerates significantly and prevent the impactor Q from penetrating the display device 10. Therefore, the display device 10 of this embodiment can also enhance passenger safety.
[0098] Example 4
[0099] In embodiments 1 to 3, when viewing the display device 10 from above, the positions of the centers P2 and P3 of the openings of the bracket 200 are offset from the position of the center P0 of the display area 112. One possible configuration is that, when viewing the display device 10 from above, the position of the center of the opening of the bracket 200 does not offset from the position of the center P0 of the display area 112.
[0100] Similar to the display device 10 in Embodiments 1 to 3, the display device 10 in this embodiment includes a display 100 and a bracket 200, and is fixed in the opening portion 510 of the dashboard 500. The configuration of the display 100 in this embodiment is the same as that of the display 100 in Embodiment 1, and therefore, the bracket 200 in this embodiment is described.
[0101] Similar to the bracket 200 in Embodiment 1, the bracket 200 in this embodiment is disposed on the surface 100b of the display 100 (the bottom surface 133 of the chassis 132). The outer peripheral surface 200a of the bracket 200 in this embodiment is adhered to the inner wall 510a of the opening portion 510 of the dashboard 500 by an adhesive.
[0102] The bracket 200 in this embodiment has a rectangular shape that matches the internal shape of the opening 510 of the dashboard 500. For example... Figure 19 As shown, a rectangular opening 240 is disposed in the central portion of the bracket 200 in this embodiment. In this embodiment, when the display device 10 is viewed from above, the position of the center P4 of the opening on the display 100 side of the opening 240 matches the position of the center P0 of the display area 112.
[0103] The bracket 200 of this embodiment includes a first portion 244 located on the -X side and a second portion 246 located on the +X side, relative to the center line 242 extending in the Y direction and passing through the center P4 of the opening portion 240. Figure 20 As shown, the first part 244 and the second part 246 are opposite to each other in the X direction, with an opening 240 between them. The first part 244 and the second part 246 are joined by welding or adhesive.
[0104] In this embodiment, the support 200 is formed of two types of materials with different rigidities (Young's modulus or hardness). Specifically, the first portion 244 is formed of a material with a predetermined rigidity, and the second portion 246 is formed of a material with higher rigidity than the material forming the first portion 244. For example, the first portion 244 is formed of silicone rubber (Young's modulus: 4 MPa, hardness: Asker C35), polyurethane rubber (Young's modulus: 40 MPa, hardness: Shore A70), etc., and the second portion 246 is formed of stainless steel (Young's modulus: 193 GPa, hardness: Shore 67). The rigidity of the material forming the second portion 246 is higher than that of the material forming the first portion 244, and therefore, when the impactor Q impacts the display surface 100a at a point passing through the center P0 of the display area 112 and perpendicular to the centerline S1 of the display area 112, the rigidity of the +X side (second portion 246) relative to the centerline S1 is higher than that of the -X side (first portion 244) relative to the centerline S1. In other words, when the impacting body Q impacts the display surface 100a on the center P0 of the display area 112 and perpendicular to the center line S1 of the display area 112, the rigidity of the impact on the bracket 200 (display device 10) fixed to the dashboard 500 is asymmetrical.
[0105] In addition, such as Figure 21As shown, the width D4 of the opening 240 on the display 100 side in one direction (X direction) is smaller than the maximum width QD of the impactor Q in one direction (X direction). Therefore, it is possible to prevent the impactor Q from penetrating the display device 10.
[0106] Next, refer to Figure 22 and Figure 23 Simultaneously, the deceleration of the impactor Q is described when it impacts the center P1 of the display surface 100a. The deceleration of the impactor Q is described using an example where a spherical impactor Q moves from the -Z side along the centerline S1 and impacts the display surface 100a along the centerline S1.
[0107] When the impactor Q impacts the display surface 100a (impact position P1) on the centerline S1, the rigidity of the second portion 246 (+X side) of the bracket 200 is higher than the rigidity of the first portion 244 (-X side) of the bracket 200, and therefore, as Figure 22 As shown, the load caused by the impactor Q is mainly applied to the second part 246a side, and the first part 244 deforms. As a result, as in Example 1, deceleration occurs in both the +Z and +X directions. Next, the impactor Q moves to the deformed first part 244 side, and as... Figure 23 As shown, the load caused by the impactor Q is mainly applied to the first part 244 side. As a result, as in Embodiment 1, deceleration occurs in the +Z direction and deceleration in the -X direction. Specifically, as in Embodiment 1, in this embodiment, the direction of the main applied load also changes over time, and the deceleration in the X direction fluctuates from the +X direction to the -X direction. Therefore, like the display device 10 of Embodiment 1, the display device of this embodiment can shorten the time during which the deceleration of the impactor Q is large.
[0108] As described above, the first portion 244 and the second portion 246 of the bracket 200 are formed of materials with different rigidities. Therefore, when the impacting body Q impacts the display surface 100a passing through the center P0 of the display area 112 and perpendicular to the centerline S1 of the display area 112, the rigidity of the impact on the display device 10 (bracket 200) fixed to the dashboard 500 is asymmetrical. As a result, the display device 10 can shorten the deceleration time of the impacting body Q by a large amount.
[0109] Example 5
[0110] In embodiments 1 to 4, the display device 10 includes a support 200. However, it is possible for the display device 10 to include a configuration of multiple supports 310.
[0111] like Figure 24As shown, the display device 10 of this embodiment includes a display 100 and five supports 310. Similar to the support 200 of Embodiment 1, the supports 310 secure the display 100 in the opening 510 of the dashboard 500. The configuration of the display 100 in this embodiment is the same as that of the display 100 in Embodiment 1, and therefore, the supports 310 will be described.
[0112] Each support 310 has a parallelepiped shape. The support 310 is formed of resin or metal. Figure 25 As shown, the bracket 310 is attached to the surface 100b of the display 100 (the bottom surface 133 of the chassis 132) by adhesive. In this embodiment, a portion of the top surface 310a of each bracket 310 is adhered to the surface 100b of the display 100 by adhesive. Furthermore, the side surface 310b of each bracket 310 is adhered to the inner wall 510a of the opening portion 510 of the dashboard 500 by adhesive.
[0113] When viewed from above, the five supports 310 are asymmetrically arranged relative to the center P0 of the display area 112 and perpendicular to the center line S1 of the display area 112. Specifically, as Figure 24 As shown, three brackets 310 are disposed on the +Y side of the display 100, and two brackets 310 are disposed on the -Y side of the display. In this embodiment, the five brackets 310 are asymmetrically disposed relative to the center P0 passing through the display area 112 and perpendicular to the center line S1 of the display area 112. Therefore, when the impact body Q impacts the display surface 100a passing through the center P0 of the display area 112 and perpendicular to the center line S1 of the display area 112, the rigidity of the impact on the display device 10 fixed to the dashboard 500 is asymmetrical.
[0114] like Figure 24 As shown, when viewed from above, the distance L1 from the end 310c of each bracket 310 to the center P0 of the display area 112 is less than half (QD / 2) of the maximum width QD of the impactor Q. Therefore, the impactor Q can be prevented from penetrating the display device 10. Note that the distance L1 from the end 310c of each bracket 310 to the center P0 of the display area 112 can be adjusted by adjusting the length (Y-direction length) of the bracket 310, the arrangement of the brackets 310, etc.
[0115] Similarly, in this embodiment, when the impactor Q impacts the display surface 100a on the display surface 100a on the center P0 of the display area 112 and perpendicular to the center line S1 of the display area 112, the rigidity of the impact on the display device 10 fixed to the dashboard 500 is asymmetrical, and therefore, the display device 10 of this embodiment can shorten the time of the impactor Q's deceleration.
[0116] Example 6
[0117] In embodiment 5, the display device 10 includes a plurality of supports 310. It is possible for the display device 10 to include a plurality of supports 322 and 324 of different sizes.
[0118] like Figure 26 As shown, the display device 10 of this embodiment includes a display 100, three supports 322, and three supports 324. Similar to the support 200 of Embodiment 1, supports 322 and 324 secure the display 100 in the opening 510 of the dashboard 500. The configuration of the display 100 in this embodiment is the same as that of the display 100 in Embodiment 1, and therefore, supports 322 and 324 are described.
[0119] Each of the supports 322 and 324 has a parallelepiped shape and is formed of resin or metal. In this embodiment, as... Figure 26 As shown, the width (X-direction length) D6 of the bracket 324 is greater than the width (X-direction length) D5 of the bracket 322. Furthermore, the area of the surface 324c of the bracket 324 holding the display 100, as described below, is greater than the area of the surface 322c of the bracket 322 holding the display 100, as described below. Note that the length (Y-direction length) of the bracket 322 and the length (X-direction length) of the bracket 324 are the same.
[0120] When viewed from above, three supports 322 are positioned on the +Y side of the display 100, and three supports 324 are positioned on the -Y side of the display 100. The supports 322 and 324 are positioned opposite each other on a one-to-one basis.
[0121] like Figure 27 As shown, supports 322 and 324 are disposed on the surface 100b of the display 100 (the bottom surface 133 of the chassis 132). In this embodiment, a portion of the top surface 322a of each support 322 is adhered to the surface 100b of the display 100, and a portion of the top surface 324a of each support 324 is adhered to the surface 100b of the display 100. The portion of the top surface 322a of each support 322 adhered to the surface 100b of the display 100 corresponds to the surface 322c that holds each support 322 of the display 100. The portion of the top surface 324a of each support 324 adhered to the surface 100b of the display 100 corresponds to the surface 324c that holds each support 324 of the display 100.
[0122] Furthermore, the side surface 322b of each bracket 322 is adhered to the inner wall 510a of the opening portion 510 of the dashboard 500. The side surface 324b of each bracket 324 is adhered to the inner wall 510a of the opening portion 510 of the dashboard 500.
[0123] In this embodiment, the area of surface 324c of bracket 324 holding display 100 is larger than the area of surface 322c of bracket 322 holding display 100. Furthermore, bracket 322 is disposed on the +Y side of display 100, and bracket 324 is disposed on the -Y side of display. Therefore, when an impactor Q impacts display surface 100a passing through the center P0 of display area 112 and perpendicular to the centerline S1 of display area 112, the rigidity of the impact on display device 10 fixed to dashboard 500 is asymmetrical. Hereinafter, bracket 322 and bracket 324 are sometimes collectively referred to as bracket 320.
[0124] In addition, such as Figure 26 As shown, when viewing the display device 10 from above, the distances L2 and L3 between the ends 322d and 324d of the brackets 322 and 324 and the center P0 of the display area 112 are respectively less than half (QD / 2) of the maximum width QD of the impactor Q. Therefore, the impactor Q can be prevented from penetrating the display device 10. The distances L2 and L3 can be adjusted by adjusting the lengths of the brackets 322 and 324, the arrangement of the brackets 322 and 324, etc.
[0125] In this embodiment, the rigidity of the impact on the display device 10 fixed to the dashboard 500 is asymmetrical, and therefore, the display device 10 of this embodiment can shorten the time of large deceleration of the impact body Q. Therefore, the display device 10 of this embodiment can also enhance passenger safety.
[0126] Example 7
[0127] In embodiments 1 to 6, brackets 200 to 324 secure the display 100 to the vehicle's dashboard 500. One configuration is possible in which the brackets secure the display 100 to a dashboard reinforcement (hereinafter referred to as "IPR"). The IPR is a frame member of the vehicle and supports the dashboard 500 from the rear.
[0128] like Figure 28As shown, the display device 10 of this embodiment includes a display 100 and four supports 410. The display 100 of this embodiment is disposed in an opening 510 of a dashboard 500. The supports 410 secure the display 100 to IPRs 520, which are positioned on the side of the display 100 opposite to the display surface 100a. IPRs 520 correspond to a mounting target. The configuration of the display 100 in this embodiment is the same as that of the display 100 in Embodiment 1, and therefore, the supports 410 are described.
[0129] The support 410 is formed into a cylindrical shape from resin or metal. For example... Figure 29 As shown, the bracket 410 is disposed on the surface 100b of the display 100 (the bottom surface 133 of the chassis 132). The bracket 410 secures the display 100 to the IPR 520. The -Z side surface of each bracket 410 is adhered to the surface 100b of the display 100. The +Z side surface of each bracket 410 is adhered to the IPR 520.
[0130] When viewing the display device 10 from above, as Figure 28 As shown, a quadrilateral (rectangular in this embodiment) 415 is formed by the area enclosed by the line segment connecting the center 410P on the -Z side surface of each of the four supports 410, and the center P5 of the formed quadrilateral 415 is positioned offset from the center P0 of the display area 112 along the -X direction. Furthermore, when viewed from above, each support 410 is positioned such that the shortest distance L4 from the center P0 of the display area 112 to the outer peripheral surface 410a of each support 410 is less than half (QD / 2) of the maximum width QD of the impactor Q.
[0131] In this embodiment, when the display device 10 is viewed from above, the position of the center P5 of the region of the quadrilateral 415 formed by connecting the centers 410P of the four supports 410 with line segments is offset from the position of the center P0 of the display area 112. Therefore, when the impactor Q impacts the display surface 100a through the center P0 of the display area 112 and perpendicular to the center line S1 of the display area 112, the rigidity of the impact on the display device 10 fixed to the IPR 520 is asymmetrical. Furthermore, the shortest distance L4 from the center P0 of the display area 112 to the outer peripheral surface 410a of each support 410 is shorter than half (QD / 2) of the maximum width QD of the impactor Q, and therefore, the display device 10 can prevent the impactor Q from penetrating.
[0132] Similarly, in this embodiment, when the impacting body Q impacts the display surface 100a on the display area 112 at its center P0 and perpendicular to the centerline S1 of the display area 112, the rigidity of the impact on the display device 10 fixed to the IPR 520 is asymmetrical. Therefore, the display device 10 of this embodiment can shorten the time during which the impacting body Q decelerates significantly. Consequently, the display device 10 of this embodiment can also enhance passenger safety.
[0133] Example 8
[0134] In embodiments 1 to 7, the rigidity of the impact on the display device 10 is asymmetrical due to the configuration of the brackets 200 to 410. Due to the configuration of the display 100 of the display device 10, an asymmetrical configuration of rigidity against impact is possible.
[0135] like Figure 30 As shown, the display device 10 of this embodiment includes a display 100 and six supports 420. The display 100 of this embodiment is disposed in the opening portion 510 of the dashboard 500. Similar to the supports 410 of Embodiment 7, the supports 420 fix the display 100 to the IPR 520.
[0136] like Figure 31 As shown, the display 100 of this embodiment is fixed to the IPR 520 by the bracket 420. The display 100 of this embodiment includes a liquid crystal display panel 110, a backlight 120, a housing 450, and a cover 140. The liquid crystal display panel 110 and the backlight 120 of this embodiment are the same as those of the liquid crystal display panel 110 and the backlight 120 of Embodiment 1, and therefore, the housing 450 and the cover 140 of this embodiment will be described.
[0137] The housing 450 of this embodiment has a box-like shape and is formed of resin or metal. The housing 450 houses the liquid crystal display panel 110 and the backlight 120 on its inner side. Figure 32 As shown, the housing 450 includes a base plate 452 and side plates 454a to 454d.
[0138] Base plate 452 is a flat plate with a rectangular shape. For example... Figure 31 As shown, the backlight 120 is disposed on the base plate 452. The +Z side surface 450b of the base plate 452 corresponds to the surface 100b on the opposite side of the display surface 100a of the display 100.
[0139] Side panels 454a to 454d surround the liquid crystal display panel 110 and the backlight 120. For example... Figure 32As shown, side panel 454a extends in the Y direction and is positioned on the -X side, and side panel 454c extends in the Y direction and is positioned on the +X side. Side panels 454a and 454c are opposite to each other in the X direction, with the liquid crystal display panel 110 and the backlight 120 located between them. Furthermore, side panel 454b extends in the X direction and is positioned on the -Y side, and side panel 454d extends in the X direction and is positioned on the +Y side. Side panels 454b and 454d are opposite to each other in the Y direction, with the liquid crystal display panel 110 and the backlight 120 located between them.
[0140] To provide a cover 140 on the side panels 454a to 454d of the housing 450, an adhesive member 460a is disposed on the top surface (-Z side surface) of the side panel 454a, and an adhesive member 460b is disposed on the top surface (-Z side surface) of the side panels 454b to 454d. In this embodiment, as Figure 33 As shown, the thickness th1 of adhesive member 460a is greater than the thickness th2 of adhesive member 460b. In one example, the thickness th1 of adhesive member 460a is 1 mm, and the thickness th2 of adhesive member 460b is 0.2 mm. Adhesive members 460a and 460b are implemented as double-sided tape, adhesive, etc. Note that in this embodiment, in order to match the sum of the thickness th1 of adhesive member 460a and the height H2 of side plate 454a, and the sum of the thickness th2 of adhesive member 460b and the height H3 of side plates 454b to 454d with the height H1, the height H2 in side plate 454a is lower than the height H3 of side plates 454b to 454d.
[0141] In this embodiment, the cover 140 is attached to the side plates 454a to 454d of the outer casing 130 via adhesive members 460a and 460b. In this embodiment, as... Figure 31 As shown, the liquid crystal display panel 110 is attached to the cover 140 by a light-transmitting adhesive 144. The other configurations of the cover 140 in this embodiment are the same as those in Embodiment 1. Hereinafter, adhesive members 460a and 460b are sometimes collectively referred to as adhesive member 460.
[0142] The support 420 is formed into a cylindrical shape from resin or metal. For example... Figure 31 As shown, the bracket 410 is disposed on the surface 100b of the display 100 (surface 450b of the housing 450) and secures the display 100 to the IPR 520. The -Z side surface of each bracket 420 is adhered to the surface 100b of the display 100. The +Z side surface of each bracket 410 is adhered to the IPR 520.
[0143] When viewing the display device 10 from above, as Figure 30As shown, six supports 420 are arranged in two rows along the Y direction, with three supports 420 in each row. Furthermore, the six supports 420 are positioned symmetrically with respect to the X and Y axes. The supports 420 symmetrically support the display 100 with respect to the center P0 of the display area 112.
[0144] In this embodiment, the bracket 420 symmetrically supports the display 100 relative to the center P0 of the display area 112. Furthermore, the thickness th1 of the adhesive member 460a that adheres the cover 140 of the display 100 to the side plate 454a of the outer shell 450 of the display 100 and the thickness th2 of the adhesive member 460b that adheres the cover 140 of the display 100 to the side plate 454c of the outer shell 450 of the display 100 are different. Therefore, when the impactor Q impacts the display surface 100a passing through the center P0 of the display area 112 and perpendicular to the centerline S1 of the display area 112, the rigidity of the impact on the display device 10 fixed to the IPR 520 is asymmetrical (asymmetrical in the X direction).
[0145] Next, refer to Figure 34 and Figure 35 Simultaneously, the deceleration of the impactor Q is described when it impacts the center P1 of the display surface 100a. An example is given where a spherical impactor Q moves from the -Z side along the centerline S1 and impacts the display surface 100a on the centerline S1, and the deceleration of the impactor Q is described.
[0146] When the impactor Q impacts the display surface 100a (impact position P1) on the centerline S1, the load caused by the impactor Q is applied to the display device 10 in the +Z direction, and therefore, deceleration occurs in the +Z direction. In this case, the thickness th1 of the adhesive member 460a on the side plate 454a of the housing 450 is greater than the thickness th2 of the adhesive member 460b on the side plate 454c of the housing 450, and therefore, as Figure 34 As shown, the adhesive member 460b is greatly compressed, and the cover 140, as well as the liquid crystal display panel 110 and backlight 120 attached to the cover 140, tilt towards the side plate 454a side (-X direction side). As a result, the impactor Q moves towards the side plate 454a side, and as... Figure 35 As shown, the load caused by the impactor Q is mainly applied to the side plate 454a, and therefore, deceleration occurs in the +Z direction and the -X direction (side plate 454a). Similarly, in this embodiment, the direction of the main applied load changes over time, and the deceleration in the X direction fluctuates. Therefore, similar to the display device 10 of Embodiment 1, the display device 10 of this embodiment can shorten the time during which the impactor Q decelerates significantly.
[0147] In this embodiment, as Figure 34 and 35As shown, preferably, the width D5 of the outer casing 450 in one direction (X direction) is narrower than the maximum width QD of the impactor Q in one direction (X direction). Therefore, the impactor Q can be prevented from penetrating the display device 10.
[0148] As described above, the thickness th1 of the adhesive member 460a and the thickness th2 of the adhesive member 460b are different. Therefore, when the impactor Q impacts the display surface 100a through the center P0 of the display area 112 and perpendicular to the center line S1 of the display area 112, the rigidity of the impact on the display device 10 fixed to the IPR 520 is asymmetrical (asymmetrical in the X direction). Furthermore, in this embodiment, the direction of the main applied load changes, and the deceleration in the X direction fluctuates. Therefore, the display device 10 of this embodiment can shorten the time of the large deceleration of the impactor Q.
[0149] Example 9
[0150] Preferably, the support 200 to 420 is formed of a material with low rigidity or hardness. In this embodiment, a method is described that has the same characteristics as... Figure 11 and Figure 12 The specific example of Embodiment 1 shown is a display device 10 of the same form (same size) in which the material forming the bracket 200 and the impact body Q are decelerated.
[0151] In this embodiment, the support 200 is formed of stainless steel (Young's modulus: 193 GPa, hardness: Shore 67), polyurethane rubber (Young's modulus: 40 MPa, hardness: Shore A70), or silicone rubber (Young's modulus: 4 MPa, hardness: Asker C35). Note that the offset α between the center P0 of the display area 112 and the center P2 of the opening is 2 mm. The thickness th3 of the support 200 is 10 mm.
[0152] Similar to the specific example in Embodiment 1, in this embodiment, the display device 10 is fixed in the opening portion 510 of the dashboard 500. Then, using an impact tester, a spherical impactor Q with a diameter (maximum width) QD of 165 mm and a weight of 6.8 kg is moved from the -Z side at a speed of 24.1 km / h along the centerline S1 and impacts the display surface 100a (impact position P1) of the centerline S1.
[0153] Figure 36 The deceleration of the impact body Q in the display device 10 is shown, wherein the bracket 200 is formed of stainless steel. Figure 37 The deceleration of the impactor Q in the display device 10 is shown, wherein the bracket 200 is formed of polyurethane rubber. Figure 38 The deceleration of the impactor Q in the display device 10 is shown, wherein the support 200 is formed of silicone rubber.
[0154] In the display device 10 with a bracket 200 made of stainless steel, the longest time tmax3 is the duration during which the combined deceleration continuously exceeds a reference value. Figure 36 The value is set to 100%. In the display device 10 where the bracket 200 is formed of polyurethane rubber, the longest duration tmax4 of the combined deceleration continuously exceeding the reference value is... Figure 37 The maximum duration of the combined deceleration exceeding the reference value is tmax5, which is 88% of tmax3. In the display device 10 where the bracket 200 is formed of silicone rubber, the maximum duration of the combined deceleration exceeding the reference value is tmax5. Figure 38 It is 16% of tmax3.
[0155] As described above, the display device 10, which includes a bracket 200 formed of a material with low rigidity or hardness (stainless steel > polyurethane rubber > silicone rubber), can further shorten the time it takes for the impact body Q to decelerate significantly. Therefore, the display device 10, which includes a bracket 200 formed of a material with low rigidity or hardness, can further enhance passenger safety. Note that the time it takes for the impact body Q to decelerate to zero increases as the rigidity or hardness of the material forming the bracket 200 decreases. Figures 36 to 38 ).
[0156] Example 10
[0157] In this embodiment, for example of a display device 10 fixed to the bottom surface 512 of a box-shaped dashboard 500, the deceleration of an impact body Q in a configuration where the rigidity of the fixed target is greater than the rigidity of the bracket 200 is described.
[0158] The instrument panel 500 of this embodiment is formed as a box shape with an opening on the +Z side. The instrument panel 500 is formed by die casting of an aluminum alloy (e.g., ADC12). ADC12 has a Young's modulus of 71 GPa. The Rockwell hardness of ADC12 is 54 in HRB. Figure 39 As shown, the dashboard 500 of this embodiment houses the liquid crystal display panel 110, backlight 120, bracket 200, etc. of the display device 10 inside its interior.
[0159] In this embodiment, the outer periphery of the dashboard 500 and the cover 140 of the display device 10 are covered by a surface material 600. In one example, the surface material 600 is formed of resin. The color of the surface material 600 is the same as the color of the cover 140. The surface material 600 is attached to the outer periphery of the dashboard 500 and the cover 140 by adhesive, threaded connection, etc. The color of the surface material 600 covering the outer periphery of the dashboard 500 and the cover 140 is the same as the color of the cover 140, and therefore, the unity between the dashboard 500 and the display device 10 can be enhanced.
[0160] Similar to the display device 10 in Embodiment 1, the display device 10 in this embodiment includes a display 100 and a bracket 200. The display 100 displays characters, images, etc. The bracket 200 fixes the display device 10 to the bottom surface 512 inside the dashboard 500.
[0161] In addition to the liquid crystal display panel 110, backlight 120, housing 130, and cover 140, the display 100 of this embodiment also includes a touch panel 150. The touch panel 150 is disposed on the +Z side surface 140b of the cover 140 via an adhesive layer (not shown). In one example, the touch panel 150 is implemented as a capacitive touch panel. The touch panel 150 detects the position of a passenger touching the cover 140.
[0162] In this embodiment, the space between the liquid crystal display panel 110 and the touch panel 150 disposed on the cover 140 is filled with adhesive 144.
[0163] In this embodiment, the cover 140 is attached to the top surface of the side wall 514 of the instrument panel 500 by the adhesive member 142. Therefore, the cover 140 of this embodiment is supported by the side wall 514 of the instrument panel 500 from the opposite side (-Z side) of the impact direction of the impactor Q.
[0164] The other configurations of the display 100 in this embodiment are the same as those of the display 100 in Embodiment 1.
[0165] Similar to the support 200 in Embodiment 1, the support 200 of this embodiment has a frame-like shape, and a rectangular opening 210 is disposed in the central portion of the support 200. The support 200 of this embodiment is formed of polyurethane rubber (Young's modulus: 40 MPa, hardness: Shore A70) or silicone rubber (Young's modulus: 4 MPa, hardness: Asker C35).
[0166] In this embodiment, the bracket 200 is attached to the surface 100b (bottom surface 133 of the chassis 132) of the display 100 opposite to the display surface 100a by adhesive. The bracket 200 of this embodiment secures the display device 10 (display 100) to the bottom surface 512 inside the dashboard 500 via adhesive. The dashboard 500 has a box-shaped shape with an opening on the +Z side, and the bracket 200 secures the display device 10 to the bottom surface 512 inside the dashboard 500. Thus, the display device 10 (display 100) is supported by the bracket 200 from the bottom surface 512 on the opposite side (-Z side) of the direction of impact of the impactor Q.
[0167] Similar to the bracket 200 in Embodiment 1, for the bracket 200 of this embodiment, the position of the center P2 of the opening on the display 100 side (-Z side) of the opening portion 210 is offset from the position of the center P0 of the display area 112 in the -X direction. In this embodiment, the offset α between the position of the center P0 of the display area 112 and the position of the center P2 of the opening is 2 mm.
[0168] Next, the deceleration of the impactor Q will be described. In one example, the various components of the display device 10 of this embodiment have Figure 40 and Figure 41 The dimensions shown are as follows. Except for the outlines of the cover 140, touch panel 150, and bracket 200, and the thickness th3 of the bracket 200, the dimensions of each component are the same as in the specific example of Embodiment 1 (outline of cover 140: 220mm × 318mm, outline of touch panel 150: 180mm × 278mm, outline of bracket 200: 180mm × 278mm, and thickness th3 of bracket 200: 10mm). For the display device 10 fixed to the bottom surface 512, as in the specific example of Embodiment 1, a spherical impactor Q with a diameter (maximum width) QD of 165mm and a weight of 6.8kg is moved at a speed of 24.1km / h along the centerline S1 from the -Z side and impacts the display surface 100a on the centerline S1 (impact position P1).
[0169] Figure 42 The deceleration of the impactor Q in the display device 10 is shown, wherein the support 200 is formed of polyurethane rubber. Figure 43 The deceleration of the impactor Q in the display device 10 is shown, wherein the support 200 is formed of silicone rubber.
[0170] In Example 9, the duration tmax3 of the combined deceleration continuously exceeding the reference value is set to 100%. In the display device 10 where the bracket 200 is formed of polyurethane rubber, the longest duration tmax6 of the duration of the combined deceleration continuously exceeding the reference value is... Figure 42 The value is 88% of tmax3, the same as the display device 10 in Example 9 where the bracket 200 is formed of polyurethane rubber. In the display device 10 where the bracket 200 is formed of silicone rubber, the longest duration tmax7 of the combined deceleration continuously exceeds the reference value is... Figure 43 The value is 16% of tmax3, the same as the display device 10 in Example 9 where the bracket 200 is formed of silicone rubber. Therefore, also in this embodiment, the display device 10 including the bracket 200 formed of a material with low rigidity or hardness can further shorten the amount of time for the impact body Q to decelerate.
[0171] When the display device 10 includes a touch panel 150 and the rigidity of the bracket 200 is low, the passenger's tactile feedback on the touch panel 150 is reduced due to deformation of the bracket 200, and the operability of the touch panel 150 may decrease. In this embodiment, the dashboard 500, formed of a material with a rigidity higher than that of the material forming the bracket 200, supports the display device 10 from the opposite side of the impact direction of the impact body Q (i.e., the passenger's direction), and therefore, the amount of time during which the impact body Q decelerates can be shortened without negatively impacting the operability of the touch panel 150. That is, preferably, the rigidity of the dashboard 500 is greater than that of the bracket 200.
[0172] Note that, preferably, when the impactor Q impacts, the thickness th3 of the bracket 200 is a thickness that does not exceed the compressive deformation limit of the bracket 200. When the compressive deformation limit of the bracket 200 is exceeded due to the impact of the impactor Q, the amount of time during which the impactor Q decelerates may be greater due to the rigidity of the instrument panel 500. Preferably, in the bracket 200 formed of silicone rubber in this embodiment, for example, the thickness th3 of the bracket 200 is 3 mm or greater.
[0173] Modify Example
[0174] Embodiments have been described, but various modifications may be made to this disclosure without departing from the spirit and scope thereof.
[0175] For example, in one embodiment, the brackets 200 to 420 are mounted on the housing 130 (chassis 132) and 450 of the display 100 by adhesive bonding. However, one configuration is possible in which the brackets 200 to 420 are mounted on the housing 130 (chassis 132) and 450 of the display 100 by threaded connection, welding, or the like. Another configuration is possible in which the brackets 200 to 420 are integrally formed with the housing 130 (chassis 132) and 450.
[0176] In one embodiment, brackets 200 to 420 are adhered to dashboard 500 or IPR 520. However, a configuration is possible in which brackets 200 to 420 are threaded onto dashboard 500 or IPR 520.
[0177] In one embodiment, the display 100 includes a cover 140. However, a configuration is possible in which the display 100 does not include the cover 140. When the display 100 does not include the cover 140, the surface of the liquid crystal display panel 110 on the -Z side (passenger side) corresponds to the display surface 100a of the display 100.
[0178] In one embodiment, the display 100 includes a liquid crystal display panel 110 and a backlight 120. However, a configuration is possible in which the display 100 includes another display panel (display device). For example, a configuration is possible in which the display 100 includes an organic electroluminescent (EL) display panel instead of the liquid crystal display panel 110 and the backlight 120.
[0179] In this embodiment, the display 100 is disposed in the opening portion 510 of the dashboard 500. However, the location of the display 100 is not limited to the opening portion 510 of the dashboard 500. For example, as Figure 44 As shown, one possible configuration is in which the display 100 of the display device 10 of Embodiment 1 can be configured to span the opening 510 of the dashboard 500 and the opening 530 of the IPR 520. In this case, the surface 200c of the display 100 side of the bracket 200 is adhered to the rear surface 522 of the IPR 520.
[0180] In embodiments 1 to 3, the position of the center P0 of the display area 112 is offset in the -X direction from the position of the center P2 of the opening of the opening portion 210 and the position of the center P3 of the opening of the recesses 220 and 230. The direction in which the position of the center P0 of the display area 112 is offset from the position of the center P2 of the opening of the opening portion 210 and the position of the center P3 of the opening of the recesses 220 and 230 can be set to any direction. For example, one configuration is possible in which the position of the center P0 of the display area 112 is offset in the -Y direction from the position of the center P2 of the opening of the opening portion 210 and the position of the center P3 of the opening of the recesses 220 and 230.
[0181] In embodiments 1 and 4, the openings 210 and 240 are formed in a rectangular shape. However, a configuration is possible in which, similar to the recess 230 in embodiment 3, the width of the openings 210 and 240 in one direction (X direction) narrows towards the direction opposite to the display 100 (+Z direction). In this case, the minimum width of the openings 210 and 240 in one direction (X direction) is less than the maximum width QD of the impactor Q in one direction (X direction). Furthermore, the direction in which the minimum width of the openings 210 and 240 is less than the maximum width Q4 of the impactor Q is not limited to the X direction and can be any direction. For example, a configuration is possible in which the minimum width of the opening 210 in the Y direction is less than the maximum width (diameter) QD of the impactor Q in the Y direction.
[0182] The cross-sectional shape of the recess 230 in Embodiment 3 is not limited to a trapezoid. For example, one configuration is possible in which the cross-sectional shape of the recess 230 is V-shaped.
[0183] Similarly, in Embodiment 3, the direction in which the minimum width of the recess 230 is less than the maximum width QD of the impactor Q is not limited to the X direction, but can be any direction.
[0184] In the bracket 200 of embodiment 4, the rigidity of the first portion 244 and the rigidity of the second portion 246 are different, and the first portion 244 and the second portion 246 are opposite to each other in the X direction. It is sufficient for the first portion 244 and the second portion 246 to be opposite to each other, and a configuration in which the first portion 244 and the second portion 246 are opposite to each other in the Y direction is possible.
[0185] In Embodiment 5, it is sufficient to arrange the bracket 310 asymmetrically with respect to the center line S1. For example, one configuration is possible in which the bracket 310 is arranged at the +Y side, -Y side, and +X side of the display 100.
[0186] In embodiment 6, it is sufficient that the area of at least one bracket 320 holding the surface of the display 100 is different from the area of the other brackets 320 holding the surface of the display 100.
[0187] In embodiment 7, the bracket 410 is formed as a cylinder. Furthermore, when the display device 10 is viewed from above, the area enclosed by the line segments connecting the centers 410P of the four brackets 410 forms a quadrilateral 415, and the center P5 of the formed quadrilateral 415 is offset from the center P0 of the display area 112. However, a configuration is possible in which the bracket 410 has a prism shape, a truncated pyramid shape, etc. The number of brackets 410 is not limited to four. When the display device 10 is viewed from above, the area enclosed by the line segments connecting the centers 410P of multiple brackets 410 forms a polygon, and it is sufficient that the center of the polygon is offset from the center P0 of the display area 112. For example, a configuration is possible in which a pentagonal area is formed by five brackets 410.
[0188] In embodiment 8, it is sufficient that the thickness of the adhesive members 460, which are opposite to each other between the liquid crystal display panel 110 and the backlight 12, is different. Furthermore, the direction in which the width of the housing 450 is less than the maximum width QD of the impactor Q is not limited to the X direction, but can be any direction.
[0189] Some exemplary embodiments have been described above for illustrative purposes. Although specific embodiments have been given in the foregoing discussion, those skilled in the art will recognize that changes in form and detail may be made without departing from the broader spirit and scope of the invention. Therefore, the specification and drawings should be considered illustrative rather than restrictive. Consequently, this detailed description should not be regarded as limiting, and the scope of the invention is defined only by the included claims and the full scope of their equivalents.
Claims
1. A display device, comprising: A display, comprising a display surface; and A bracket, disposed on the surface of the display on the side opposite to the display surface, secures the display to a fixed target, wherein... When the display device is fixed to the fixed target, the impact rigidity of the impact on the display device is asymmetrical when the impactor moves through the center of the display area of the display and perpendicular to the center line of the display area and impacts the display surface on the center line.
2. The display device according to claim 1, wherein... The bracket includes an opening, and When viewed from above, the center of the display area is offset from the center of the opening on one side of the display, and the minimum width of the opening in one direction is less than the maximum width of the impactor in that direction.
3. The display device according to claim 1, wherein... The bracket includes a recess on the surface opposite the display, and When viewed from above, the center of the display area is offset from the center of the opening of the recess, and the minimum width of the recess in one direction is less than the maximum width of the impactor in that direction.
4. The display device according to claim 1, wherein The bracket includes an opening, and When viewed from above, the support comprises a first part and a second part opposite to each other, with the opening portion between them, and the first part and the second part are formed of materials having different rigidities from each other, and the minimum width of the opening portion in one direction is less than the maximum width of the impactor in that direction.
5. The display device according to claim 1, further comprising: Multiple of the aforementioned supports, wherein When viewed from above, the plurality of supports are configured asymmetrically with respect to a center line passing through and perpendicular to the center line of the display area, and the distance from the end of each support to the center of the display area is less than half the maximum width of the impact body.
6. The display device according to claim 1, further comprising: Multiple of the aforementioned supports, wherein At least one of the brackets has a different surface area for holding the display compared to the other brackets. When viewed from above, the distance from the end of each of the brackets to the center of the display area is less than half the maximum width of the impactor.
7. The display device according to claim 1, further comprising: Multiple brackets secure the display to a fixed target positioned on the side of the display opposite the display surface, wherein... When viewed from above, the center of the display area is offset from the center of the polygon surrounded by the line segment connecting the center of the bracket, and the shortest distance from the center of the display area to the outer peripheral surface of each bracket is less than half the maximum width of the impactor.
8. The display device according to claim 1, wherein The display includes a display panel, a housing housing the display panel, and a cover disposed on the housing via an adhesive member and protecting the display panel. When viewed from above, the thickness of the adhesive members differs between the portions of the display panel that are opposite each other.
9. The display device according to claim 1, wherein The fixed target is supported by the bracket from the side opposite to the direction in which the impactor impacts the display, and The rigidity of the fixed target is greater than the rigidity of the support.