JP6459687B2 - In-vehicle display device - Google Patents

Description

  The present invention relates to an in-vehicle display device for providing vehicle information to an occupant.

  Generally, a vehicle-mounted display device for providing vehicle information such as vehicle speed to an occupant is mounted on the vehicle. As a conventional technique related to an in-vehicle display device, there is a technique disclosed in Patent Document 1. The technique disclosed in Patent Document 1 will be described with reference to FIG.

  FIG. 8 shows a cross section of an in-vehicle display device (vehicle display device) disclosed in Patent Document 1. In addition, the code | symbol was reassigned.

  The in-vehicle display device 200 is configured such that a substrate 202 on which a light emitting element 201 is mounted is accommodated in a case 203. A harness 204 for supplying electricity is connected to the substrate 202, and a motor 206 having a pointer 205 at the tip and a communication substrate 207 for communicating with the outside of the vehicle are provided.

  The communication substrate 207 is fixed at a predetermined position with respect to the substrate 202 by bolts 211, nuts 212, and a collar 213.

  By the way, the light emitting element 201 generates heat by emitting light. When this heat is transferred to the substrate 202, the substrate 202 expands and contracts due to the influence of heat. For this reason, a method as shown in FIG. 9 is generally employed for fixing other components to the substrate 202.

  Please refer to FIG. FIG. 9 is a cross-sectional view taken along line 9-9 in FIG. The board 202 is formed with two types of bolt holes 202a and 202b through which the bolts 211 for fixing the communication board 207 (see FIG. 8) are passed. One bolt hole 202 a is formed in a circular shape along the outer diameter of the bolt 211. The other bolt hole 202b is formed in an oval shape.

  The communication board 207 is positioned by the circular bolt hole 202a while allowing the thermal expansion of the board 202 to be allowed by the oval bolt hole 202b.

  As can be seen from the above, the vicinity of the oval bolt hole 202 b is a portion that can move relative to the communication substrate 207. For this reason, it is desirable that the components related to the communication board 207 are in the vicinity of the circular bolt hole 202a with a small relative movement. That is, the degree of freedom of component placement is reduced due to the effect of thermal elongation.

JP 2013-60037 A

  It is an object of the present invention to provide an in-vehicle display device that has a high degree of freedom in arranging components.

According to the first aspect of the present invention, the sub board provided with the light emitting element, the main board capable of supplying electricity to the sub board, the display device controlled by the main board and capable of displaying information, and the sub board. In a vehicle-mounted display device that has a substrate, a main substrate, and a support member that supports the display,
The sub-board is made of a press-moldable material, has a first surface portion facing the main substrate, and a rising portion raised from the end of the first surface portion toward the edge of the main substrate. And a second surface portion extending from the tip of the rising portion so as to be separated from the main substrate,
The light emitting element is provided on the second surface portion,
The in-vehicle display device is provided in which the main substrate is sandwiched between the first surface portion of the sub substrate and the display.

  Preferably, the support member has a main board / sub board positioning pin that projects toward the main board and the sub board and positions both the main board and the sub board. ing.

  In the invention according to claim 1, the sub-board is made of a press-moldable material, and rises toward the edge of the main board from the first face portion facing the main board and the end portion of the first face portion. And a second surface portion extending from the tip of the rising portion so as to be away from the main substrate. A light emitting element is provided on the second surface portion. Due to the heat of the light emitting element, the second surface portion can be thermally stretched. On the other hand, the sub-board is made of a press-moldable material. That is, it is made of a material that allows a predetermined amount of elastic deformation. For this reason, when the second surface portion is thermally stretched, the rising portion can be elastically deformed. When the rising portion is elastically deformed, the thermal elongation of the second surface portion can be absorbed. That is, it is possible to suppress the influence of the thermal elongation generated on the second surface portion from being transmitted to the first surface portion. The first surface portion facing the main substrate is not easily affected by thermal elongation. Components can be freely arranged on the first surface portion. An in-vehicle display device having a high degree of freedom in arrangement of components can be provided.

  In the invention according to claim 2, the support member has a main board / sub board positioning pin for positioning both the main board and the sub board. A single pin positions both the main board and the sub board. Thereby, the position shift of the sub board | substrate with respect to a main board | substrate can be suppressed. The sub board has a rising portion extending toward the edge of the main board. It is necessary to set a gap between the leading end of the rising portion and the main substrate in consideration of mutual positional deviation so that the leading end of the rising portion does not contact the main substrate. In this respect, by having the main board / sub board positioning pins, the main board and the sub board can be disposed at relatively accurate positions. For this reason, the clearance gap between the front-end | tip of a raising part and a main board | substrate can be made small. By reducing the gap between the rising portion and the main substrate, the in-vehicle display device can be made compact.

It is a front view of the vehicle-mounted display apparatus by the Example of this invention. It is a disassembled perspective view of the vehicle-mounted display apparatus shown by FIG. FIG. 3 is a perspective view of a sub-board shown in FIG. 2. FIG. 4 is a cross-sectional view taken along line 4-4 of FIG. FIG. 5 is a sectional view taken along line 5-5 of FIG. FIG. 6 is an enlarged view of 6 parts in FIG. 5. It is a figure explaining the effect | action of the vehicle-mounted display apparatus shown by FIG. It is a figure explaining the basic composition of the conventional technology. FIG. 9 is a sectional view taken along line 9-9 in FIG. 8.

Embodiments of the present invention will be described below with reference to the accompanying drawings. In the description, left and right refer to the left and right with reference to the occupant of the vehicle on which the in-vehicle display device is mounted, and front and rear refer to the front and rear with reference to the traveling direction of the vehicle. In the figure, Fr indicates the front, Rr indicates the rear, Le indicates the left when viewed from the occupant, Ri indicates the right when viewed from the occupant, Up indicates the upper side, and Dn indicates the lower side.
<Example>

  Please refer to FIG. FIG. 1 shows an in-vehicle display device 10. The in-vehicle display device 10 is mounted, for example, in front of a driver's seat of a vehicle and provides vehicle information to an occupant. The vehicle information is displayed by, for example, electrical means.

  A tachometer 121 that displays the number of revolutions of the engine is disposed at the left end of the in-vehicle display device 10. A fuel meter 122 that displays the remaining amount of fuel is disposed at the right end of the in-vehicle display device 10. A plurality of warning parts 123 such as blinker lamps are arranged at the upper end of the in-vehicle display device 10.

  Between the tachometer 121 and the fuel meter 122, the display surface portion 90a of the display 90 faces. One or a plurality of information selected from the vehicle speed, fuel consumption, road information, and the like can be displayed on the display surface 90a. Furthermore, the information displayed on the display surface part 90a can be switched by the operation of the occupant.

  Please refer to FIG. The in-vehicle display device 10 is disposed so as to cover a support member 20, a main board 40 positioned in front of the support member 20 and positioned by the support member 20, and a front surface and a peripheral edge of the main board 40. The sub board 50, the display 90 positioned behind the support member 20 and positioned by the support member, and the front case 100 in which the display 90, the support member 20, the main board 40, and the sub board 50 are stored. And a rear case 110 that covers the front case 100, and a lens 120 that is fixed to the rear surface of the rear case 110.

  The front case 100, the sub board 50, the main board 40, the support member 20, the display 90, and the rear case 110 are fixed to each other by a plurality of screws 11-14.

  The support member 20 is configured by a resin injection molded product. The support member 20 has a central opening 21 formed in a rectangular shape at the center, and projects from the peripheral edge of the central opening 21 toward the main board 40 and the sub board 50 to position both the main board 40 and the sub board 50. Main board / sub board positioning pins 22, 23, a display board positioning hole 24 for positioning the display 90 below the main board / sub board positioning pin 22, and the rear case 110 at the four corners of the support member 20. A rear case positioning portion 25 for positioning the substrate, a sub substrate positioning pin 26 for projecting from the vicinity of the rear case positioning portion 25 toward the sub substrate 50 and positioning the sub substrate 50, and the lens 120. A plurality of supports corresponding to the positions of the tachometer 121, the fuel meter 122, and the warning unit 123. A member opening 27, and the supporting member screw insertion holes 31 to 34 screws 11 to 14 are inserted, are formed.

  The main substrate / sub-substrate positioning pins 22 and 23 have a substantially semi-cylindrical shape in the rear view of the support member 20 and a substantially cylindrical shape in the rear view of the support member 20. And a sub-board positioning unit that positions the sub-board 50. By forming the main board positioning part and the sub board positioning part integrally, the strength higher than the case where they are formed separately is enhanced. That is, they can reinforce each other

  The indicator positioning hole 24 is formed in the vicinity of the main board / sub board positioning pin 22. An indicator positioning hole 24 is formed in the vicinity of the main board / sub board positioning pin 22 that protrudes toward the sub board 50 and has increased strength. Although the strength is reduced by forming the indicator positioning hole 24, the influence of the strength reduction can be suppressed by forming the indicator positioning hole 24 in the vicinity of the main board / sub-board positioning pin 22. it can. In addition, the main board 40, the sub board 50, and the display device 90 are relatively difficult to be displaced with respect to the support member 20.

  The rear case positioning portion 25 has a cylindrical shape, and is formed with a support member screw insertion hole 31 for inserting the screw 11 into the bottom portion.

  The main board 40 is constituted by, for example, a hard wiring board in which a copper foil pattern is formed on the surface of glass fiber reinforced plastic. That is, the main board 40 is configured by a so-called rigid board having a substantially rectangular plate shape.

  The main board 40 includes a control circuit for lighting a light emitting element (details will be described later), a communication circuit for communicating with other components mounted on the vehicle, a microcomputer, a drive power supply circuit, and a display 90. An IC or the like for information to be displayed is mounted.

  At the center of the left and right edges of the main substrate 40 and the center of the upper edge, substantially semicircular cutout portions 41 and 42 are formed. The main board / sub board positioning pins 22 and 23 are passed through the notch shape parts 41 and 42. Thereby, the main board 40 is positioned with respect to the support member 20. Furthermore, main board screw insertion holes 43 and 44 through which the screws 13 and 14 are inserted are formed in the main board 40.

  The sub substrate 50 is separated from the main substrate 40, the first surface portion 60 facing the main substrate 40, the rising portion 70 raised from the end portion of the first surface portion 60 toward the edge of the main substrate 40, and the main substrate 40. And a second surface portion 80 extending from the tip of the rising portion 70.

  The first surface portion 60 has first surface portion screw insertion holes 63 and 64 through which the screws 13 and 14 are inserted, and a first surface portion positioning hole 65 through which the main substrate / sub substrate positioning pins 22 and 23 of the support member 20 are inserted. , 66 are formed.

  The second surface portion 80 is formed with second surface portion screw insertion holes 81 and 82 through which the screws 11 and 12 are inserted, and a second surface portion positioning hole 83 through which the sub board positioning pin 26 of the support member 20 is inserted. ing.

  Please refer to FIG. A plurality of light emitting elements 85 are mounted on the rear surface of the second surface portion 80. These light emitting elements 85 are provided corresponding to the scales of the tachometer 121 (see FIG. 1) and the fuel meter 122 (see FIG. 1) and the icons of the warning unit 123. That is, when these light emitting elements 85 are turned on, each scale and icon are turned on.

  Please refer to FIG. The sub-board 50 includes, for example, an aluminum base plate 50a, a polyimide insulating layer 50b laminated on one surface of the base plate 50a, and a copper foil circuit layer 50c laminated on one surface of the insulating layer 50b. Is a so-called flexible substrate. The sub substrate 50 is formed by press-molding a flexible substrate into an arbitrary shape.

  Please refer to FIG. The sub board 50 is electrically connected to the main board 40 via a connection member 51 disposed on the rear surface portion of the first surface portion 60. That is, the sub board 50 is supplied with power from the main board 40 through the connection member 51. The connection member 51 is in contact with the connection member contact portion 67 of the first surface portion 60 shown in FIG.

  Returning to FIG. The display device 90 is configured by, for example, a liquid crystal display. The display 90 is electrically connected to the main board 40 via a connector 91 provided on the front surface portion.

  Display screw fastening portions 93 and 94 to which the screws 13 and 14 are fastened, and indicator positioning pins 95 fitted into the indicator positioning holes 24 of the support member 20 are formed on the front surface portion of the indicator 90. Has been.

  Front case screw insertion holes 101 to 103 through which screws 11 to 13 are inserted are formed in the front case 100.

  Screws 11 and 12 are fastened to the rear case 110 and rear case bosses 111 and 112 projecting toward the support member 20, and a display portion that is open to correspond to the display surface portion 90 a of the display portion 90. An opening 114 and a plurality of light source openings 115 opening corresponding to the light emitting element 85 (see FIG. 3) are formed.

  The rear case boss portion 111 to which the screw 11 is fastened is fitted into the rear case positioning portion 25 of the support member 20. The rear case boss 111 is a part to which the screw 11 is fastened and is a part for positioning the rear case 110 and the support member 20. Since the screw 11 can be fastened in a state where the rear case boss portion 111 is fitted in the rear case positioning portion 25, the assembling work is easy.

  On the surface of the lens 120, a tachometer 121, a fuel meter 122, and a warning unit 123 are printed. In addition to printing, the tachometer 121, the fuel meter 122, and the warning unit 123 can be integrally formed with the lens 120 by insert-molding the printed films.

  An example of assembling the in-vehicle display device 10 will be described. Prior to assembly, the lens 120 is integrated with the rear case 110. The lens 120 may be adhered to the rear case 110 with an adhesive, or may be integrated with the rear case 110 by insert molding.

  First, the indicator positioning pin 95 of the indicator 90 is inserted into the indicator positioning hole 24 of the support member 20. Next, the notched portions 41 and 42 of the main board 40 are inserted into the main board / sub board positioning pins 22 and 23 of the support member 20. Next, the first surface portion positioning holes 65 and 66 of the sub substrate 50 are inserted into the main substrate / sub substrate positioning pins 22 and 23 of the support member, and the second surface portion positioning holes 83 are inserted into the sub substrate positioning pins 26.

  Next, the display 90, the support member 20, the main board 40, and the sub board 50 are fastened with the screws 14.

  The screw 14 passes through the first surface portion screw insertion hole 64 of the sub-board 50, the main board screw insertion hole 44 of the main board 40, and the support member screw insertion hole 34 of the support member 20, and fastens the indicator screw of the indicator 90. Fastened to portion 94.

  Next, the unit in which the display 90, the support member 20, the main board 40, and the sub board 50 are fastened with the screws 14 is housed in the front case 100, and the rear part of the rear case 110 in which the lens 120 is integrated. The case boss portion 111 is inserted into the rear case positioning portion 25. Finally, these are fastened together with screws 11-13.

  The screw 11 passes through the front case screw insertion hole 101 of the front case 100, the second surface screw insertion hole 81 of the sub-board 50, and the support member screw insertion hole 31 of the support member 20, and the rear case 110 Fastened to the boss 111.

  The screw 12 is passed through the front case screw insertion hole 102 of the front case 100, the second surface part screw insertion hole 82 of the sub-board 50, and the support member screw insertion hole 32 of the support member 20, and the rear case 110 Fastened to the boss 112.

  The screws 13 include a front case screw insertion hole 103 of the front case 100, a first surface screw insertion hole 63 of the sub board 50, a main board screw insertion hole 43 of the main board 40, and a support member screw insertion hole 33 of the support member 20. And is fastened to the indicator screw fastening portion 93 of the indicator 90.

  Please refer to FIG. 6, FIG. 7 (a), and FIG. 7 (b). The sub-board 50 is made of a material that can be press-molded, and has a first surface portion 60 that faces the main substrate 40, and a stand that is raised from the end of the first surface portion 60 toward the edge of the main substrate 40. A raising portion 70 and a second surface portion 80 extending from the tip of the rising portion so as to be separated from the main substrate 40 are provided. The second surface portion 80 is provided with a light emitting element 85 (see FIG. 3). Due to the heat of the light emitting element 85, the second surface portion 80 can be thermally stretched. On the other hand, the sub-board 50 is made of a press-moldable material. That is, it is made of a material that allows a predetermined amount of elastic deformation. For this reason, when the 2nd surface part 80 heat-extends, the starting part 70 can be elastically deformed. When the rising portion 70 is elastically deformed, the thermal elongation of the second surface portion 80 can be absorbed. That is, it is possible to suppress the influence of the thermal elongation generated on the second surface portion 80 from being transmitted to the first surface portion 60. The first surface portion 60 facing the main substrate 40 is not easily affected by thermal elongation. Parts can be freely arranged on the first surface portion 60. The in-vehicle display device 10 having a high degree of freedom in component arrangement can be provided.

  Please refer to FIG. The support member 20 has main board / sub board positioning pins 22 and 23 for positioning both the main board 40 and the sub board 50. Both the main board 40 and the sub board 50 are positioned by one pin. Thereby, the position shift of the sub board | substrate 50 with respect to the main board | substrate 40 can be suppressed. The sub board 50 has a rising portion 70 extending toward the edge of the main board 40. It is necessary to set a gap between the leading end of the rising portion 70 and the main substrate 40 in consideration of mutual positional deviation so that the leading end of the rising portion 70 does not contact the main substrate 40. In this regard, by having the main board / sub board positioning pins 22 and 23, the main board 40 and the sub board 50 can be disposed at relatively accurate positions. For this reason, the gap between the tip of the rising portion 70 and the main substrate 40 can be reduced. The in-vehicle display device 10 can be made compact by reducing the gap between the start-up unit 70 and the main substrate 40.

  Please refer to FIG. On the sub-board 50, components are mounted only on the front portion (one surface) that is the surface facing the main substrate 40, and the wiring pattern is disposed only on the front portion. By disposing the main board 40 on the front side (rear side) of the sub board 50, the connection member 51 (see FIG. 5) and the light emitting elements 85 can be concentrated on the front part. There is no need to provide a wiring pattern on the back surface (the other surface), and the component cost of the sub-board 50 can be reduced. In addition, since the main board 40 is located on the front side, the wiring with the sub board 50 can be shortened.

  The on-vehicle display device 10 according to the present invention has been described by taking an example of a device on which a liquid crystal display is mounted, but can also be applied to a device of a type in which a pointer is rotated by a motor. In addition to a four-wheeled vehicle, a vehicle on which the in-vehicle display device 10 is mounted includes a vehicle such as a two-wheeled vehicle, a train, a construction machine, and a work machine, as long as the vehicle is driven by a wheel or a crawler. That is, the present invention is not limited to the examples as long as the operations and effects of the present invention are exhibited.

  The vehicle-mounted display device of the present invention is suitable for passenger cars.

DESCRIPTION OF SYMBOLS 10 ... In-vehicle display device 20 ... Support member 22,23 ... Main board / sub board positioning pin 40 ... Main board 50 ... Sub board 60 ... First surface part 70 ... Raising part 80 ... Second surface part 85 ... Light emitting element 90 ... display

Claims (2)

A sub-board provided with a light emitting element, a main board that can supply electricity to the sub-board, a display that is controlled by the main board and can display information, and the sub-board, the main board, and the display A vehicle-mounted display device that is mounted on a vehicle.
The sub-board is made of a press-moldable material, has a first surface portion facing the main substrate, and a raised portion raised from the end of the first surface portion toward the edge of the main substrate. And a second surface portion extending from the tip of the rising portion so as to be separated from the main substrate,
The light emitting element is provided on the second surface portion,
The in-vehicle display device, wherein the main substrate is sandwiched between the first surface portion of the sub-substrate and the display.   2. The support member includes a main substrate / sub substrate positioning pin that projects toward the main substrate and the sub substrate and positions both the main substrate and the sub substrate. In-vehicle display device.

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