JP2007085935A - Display for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a display for a vehicle provided with a pointer instrument, a display means arranged in a front side thereof, and an electric wiring board mounted with a light source for transmission-illuminating it, wherein the electric wiring board is not screw-fixed. <P>SOLUTION: This display 1 for the vehicle is provided with the pointer instrument A, the display means 11 arranged in the front side thereof, the light source 12 for transmission-illuminating the display means, the electric wiring board 13 mounted with the light source, a light guide means 14 for guiding light from the light source 12 to a reverse face of a liquid crystal panel 11, and a casing 16 for storing those. The electric wiring board 13 is sandwiched by the casing 16 and the light guide means 14 in a board thickness direction and is sandwiched by an elastic part 16d of the casing 16 having elasticity along a face-directional one direction and the light guide means 14, in the face-directional one direction, so as to be fixed to the casing 16. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a display device for a vehicle that is installed in a driver's seat of a vehicle and displays various information to an occupant.

  In recent years, the number of information displayed on the vehicle display device has increased, but the dashboard on which the vehicle display device is installed is equipped with a vehicle interior air conditioner, an airbag, etc. The type tends to increase. For this reason, a display device for vehicles that can display a large amount of information in a limited space is desired.

  For example, a pointer instrument is provided, and display means such as a liquid crystal panel for displaying desired information is provided on the front side (viewer side) of the pointer instrument so that at least part of the pointer of the pointer instrument is exposed around the display means. (See Patent Document 1).

  Specifically, the display device includes, in addition to the pointer instrument and the display means, a light source, an electric wiring board on which the light source is mounted, a light guide means, and a casing for housing the display means and the light guide means. Prepare. The light source transmits and illuminates the display stage, and the light guide means guides light emitted from the light source to the back surface of the display means.

In this display device, display means for displaying desired information is provided on the rotation center side of the pointer of the pointer meter, thereby effectively using the display space of the vehicle display device.
JP 2003-344118 A

  However, Patent Document 1 does not describe the assembly structure of the electric wiring board, the light guide unit, and the display unit. Depending on these assembly structures, that is, depending on the assembly space, a sufficient display space is secured. There is a fear that it cannot be done.

  In particular, there is a possibility that a sufficient display space cannot be secured due to the installation space of the electric wiring board. This is because the electric wiring board is generally screw-fixed, which complicates the assembling work and restricts the display space by the screw fixing portion.

  The present invention has been made in view of the above problems, and includes a pointer instrument, display means disposed on the front surface side, and an electric wiring board on which a light source for transmitting illumination is mounted. An object of the present invention is to provide a vehicular display device in which a plate is not screwed.

  In order to achieve the above object, the present invention employs the following technical means.

  The display device for a vehicle according to claim 1 is a pointer instrument having a dial and a pointer that rotates along the front face of the dial, and is disposed on the front side of the pointer instrument on the rotation center side of the pointer. Display means for displaying the information, a light source that transmits and illuminates the display means, an electrical wiring board on which the light source is mounted, a light guide means that guides light emitted from the light source to the back surface of the display means, and an elastic portion; A casing for housing the display means, the electrical wiring board, and the light guide means, the electrical wiring board being sandwiched between the light guide means and the casing in the thickness direction of the electrical wiring board, and the surface of the electrical wiring board A configuration is adopted in which the light guide means and the elastic portion are sandwiched in one direction and fixed to the casing, and the elastic portion is configured to have elasticity in one direction of the surface direction.

  In this configuration, the electric wiring board is sandwiched between the light guide means and the casing in the thickness direction of the electric wiring board, and in one direction of the surface direction of the electric wiring board, the elastic portion has elasticity in that direction. It is sandwiched between the light guide means and fixed to the casing. As a result, the electric wiring board can be fixed to the casing by suppressing the rattling while positioning the electric wiring board in one direction of the thickness direction of the electric wiring board and the surface direction of the electric wiring board without fixing with screws.

  As a result, it is possible to provide a vehicle display device in which the electrical wiring board is not fixed with screws.

  In the vehicle display device according to claim 2, the electric wiring board is disposed substantially perpendicular to the dial, the elastic portion has elasticity in the vertical direction, and the electric wiring board is in the vertical direction. It is set as the structure comprised so that it may be pinched | interposed and fixed to a casing by a light guide means and an elastic part.

  In this configuration, the electric wiring board is fixed to the casing by being sandwiched between the light guide means and the elastic portion in a direction substantially perpendicular to the dial. In this vehicle display device, since the display means is arranged on the front side of the pointer instrument, a space for fixing the electric wiring board can be easily taken in this vertical direction. Thereby, the display space of this vehicle display device can be used more effectively.

  As a result, the display space can be used more effectively while obtaining the above-described effects.

  The vehicle display device according to claim 3, wherein the light guide means includes a first contact surface that contacts the electric wiring board and a thickness direction of the electric wiring board, and one surface direction of the electric wiring board and the electric wiring board. A second abutting surface that abuts in the direction is provided in the vicinity of the incident surface on which light emitted from the light source is incident.

  In this configuration, the first contact surface, the second contact surface, and the incident surface are arranged close to each other. On the other hand, since the incident surface is inevitably disposed close to the electrical wiring board (light source), the first contact surface and the second contact surface are disposed close to the electrical wiring board. . Thereby, the above-described effects can be realized with a compact and simple configuration.

  According to a fourth aspect of the present invention, there is provided the vehicle display device, wherein the light guide means or the casing includes positioning means for positioning the electric wiring board in a direction perpendicular to one direction in the surface direction of the electric wiring board.

  In this configuration, the light guide means or the casing includes positioning means for positioning in the vertical direction. Thereby, an electrical wiring board can be positioned by a simple structure in the direction perpendicular | vertical in the surface direction of an electrical wiring board, obtaining the above-mentioned effect.

  Hereinafter, an example in which a vehicle display device according to the present invention is applied to a combination meter 1 mounted on an automobile will be described with reference to the drawings.

(Constitution)
FIG. 1 is a partial front view of a combination meter 1 which is a vehicle display device according to an embodiment of the present invention.

  2 is a cross-sectional view taken along line II-II in FIG.

  FIG. 3 is an enlarged cross-sectional view of the display unit 10 shown in FIG.

  FIG. 4 is a plan view of the printed circuit board 13 which is the electric wiring board shown in FIG.

  5A is a plan view of the light guide plate 14 which is the light guide means shown in FIG. 3, and FIG. 5B is a cross-sectional view taken along the line VB-VB in FIG.

  6 (a) is a top view of the casing 16 shown in FIG. 3, FIG. 6 (b) is a bottom view of the casing 16, and FIG. 6 (c) is a VIB- in FIG. 6 (a). It is a VIB line sectional view.

  7A is a view taken in the direction of arrow VIIA in a state where the cover 17 and the facing plate 18 are removed in FIG. 3, and FIG. 7B is a sectional view taken along the line VIIB-VIIB in FIG. is there.

  FIG. 8 is a circuit configuration diagram illustrating an electrical circuit configuration of the combination meter 1 which is a vehicle display device according to an embodiment of the present invention.

  The combination meter 1 is disposed at a position visible from the driver in front of the driver's seat of the automobile, and displays various information related to the automobile. In the combination meter 1 according to one embodiment of the present invention, as shown in FIG. 1, a speedometer A which is a pointer instrument for instructing a traveling speed of the automobile, a distance meter which indicates a cumulative traveling distance and a section traveling distance of the automobile. B and a door indicator C for instructing the open / closed state of the door of the automobile.

  The speedometer A is configured as a pointer instrument that indicates the speed by the rotation angle of the pointer 3. The speedometer A includes a dial 2 for allowing the driver to visually recognize the rotational position of the pointer 3.

  The dial 2 is formed of a translucent material, for example, a thin plate such as transparent polycarbonate. As shown in FIGS. 1 and 2, the dial 2 is provided with a circular concave portion at the center thereof, and is configured in two steps of a bottom surface 2b of the concave portion and a general surface 2a on the outer peripheral side in the viewing direction. . The bottom surface 2b is formed concentrically with a shaft 4a of the movement 4 described later. As shown in FIG. 1, characters 2c and scales 2d are formed on the bottom surface 2b. Only the character 2 c is formed on the general surface 22. The character 2c and the scale 2d are for indicating the speed of the automobile together with a pointer 3 to be described later, and are arranged on an arc and concentric with the shaft 4a as shown in FIG.

  The character 2c and the scale 2d are formed by printing or hot stamping on the front surface (left surface in FIG. 2) or back surface (right surface in FIG. 2) of the dial 2. That is, a non-transparent colored layer or a semi-transparent colored layer is provided in a portion other than the character 2c and the scale 2d, and the character 2c and the scale 2d are kept transparent, or a semi-transparent colored layer is provided. Apply the process. When a light emitting diode 5b disposed on the back side of the dial 2, which will be described later, is turned on, the dial 2 is transmitted and illuminated by the light emitted from the light emitting diode 5b, and the character 2c and the scale 2d are lit and displayed.

  A printed circuit board 6 is disposed on the back side (right side in FIG. 2) of the dial 2. On the printed circuit board 6, a light emitting diode 5 b that transmits and illuminates the dial 2 and a light emitting diode 5 a that emits and displays a pointer 3 described later are mounted.

  In addition, the movement 4 is mounted on the printed circuit board 6. The movement 4 includes an electric actuator such as a stepping motor or a cross coil type rotating machine, and rotates the shaft 4a by an angle corresponding to an external electric signal (automobile speed signal in the present embodiment). The shaft 4a of the movement 4 extends outward (to the left in FIG. 2) of the dial 2, and the pointer 3 is fixed to the tip thereof.

  The pointer 3 is formed of a translucent material such as an acrylic resin, and is lit and displayed by light emitted from the light emitting diode 5a mounted on the printed board 6. Further, on the printed circuit board 6, a control device 8 (FIG. 8) that performs lighting / extinguishing control of both the light emitting diodes 5 a and 5 b and driving control of the movement 4 is mounted. The control device 8 is composed of, for example, a microcomputer.

  The dial 2, the printed board 6 and the like described above are accommodated and held in a case composed of the upper case 21 and the lower case 22.

  A design plate 23 that covers the end of the dial 2 is attached to the front side of the dial 2 (left side in FIG. 2), and a transparent cover 24 is attached to the tip of the design plate 23. The design plate 23 is made of, for example, a resin material, and the transparent cover 24 is made of a transparent resin thin plate or glass.

  The upper case 21 and the lower case 22 are molded from a resin material, and the upper case 21 has a function as a reflector, guides light from the light emitting diode 5a to the pointer 3, and transmits light from the light emitting diode 5b to the dial 2. Lead.

  On the other hand, the distance meter B indicating the cumulative travel distance and the section travel distance as information and the door indicator C indicating the door open / close state as information are formed as images on the liquid crystal panel 11 as display means. The

  The liquid crystal panel 11 is disposed on the rotation center side of the pointer 3 and on the front side (left side in FIG. 2) of the pointer instrument, that is, the center side of the speedometer A and the viewer side (left side in FIG. 2) in the viewing direction. ). As a result, the liquid crystal panel 11 is arranged so as to overlap with the speedometer A which is a pointer instrument in the visual recognition direction (left and right direction in FIG. 2). The liquid crystal panel 11 is electrically connected to the printed circuit board 6 through a multi-wire flexible lead wire 11a.

  Behind the liquid crystal panel 11 (on the right side in FIG. 3), a light emitting diode 12 that is a light source that illuminates the liquid crystal panel 11, a printed circuit board 13 that is an electrical wiring board on which the light emitting diode 12 is mounted, and a light emitting diode 12 A light guide plate 14 is disposed as light guide means for guiding emitted light to the back surface (right side surface in FIG. 2) of the liquid crystal panel 11. The liquid crystal panel 11, the printed board 13, and the light guide plate 14 are accommodated and held in the casing 16.

  The light guide plate 14 is formed of a transparent acrylic resin or the like, and a textured surface 14g having minute irregularities is formed on the back surface (the right surface in FIG. 3). The embossed surface 14 g reflects light from the light emitting diode 12 incident on the light guide plate 14 to the back surface of the liquid crystal panel 11. The casing 16 is made of acrylonitrile / butadiene / styrene (ABS) resin or the like.

  On the front side of the liquid crystal panel 11 (left side in FIG. 3), a facing plate 18 having an opening 18a is arranged, and a cover 17 having an opening 17a is fixed to the casing 16 from the left side in FIG. Is done. Both the cover 17 and the facing plate 18 are made of ABS resin or the like.

  Between the light guide plate 14 and the casing 16, a reflection plate 15 a that reflects light from the light emitting diode 12 incident on the light guide plate 14 to the back surface of the liquid crystal panel 11 is disposed. The reflecting plate 15a is made of polycarbonate resin or the like and has a white color with high reflectivity.

  Between the light guide plate 14 and the liquid crystal panel 11, a diffusion plate 15 b that guides the reflected light from the light guide plate 14 to the back surface of the liquid crystal panel 11 is disposed. The diffusion plate 15b is made of polycarbonate resin or the like and is subjected to light diffusion processing.

  A transparent plate 15 c that protects the liquid crystal panel 11 is disposed between the cover 17 and the facing plate 18. The transparent plate 15c is formed of a transparent acrylic resin or the like, and a textured surface having minute irregularities is formed on the surface (the left surface in FIG. 3). The embossed surface prevents extraneous light such as sunlight from being reflected by the transparent plate 15c and making the liquid crystal panel 11 difficult to see.

  The procedure for assembling the display unit 10 is as follows. First, the printed circuit board 13, the reflection plate 15a, the light guide plate 14, the diffusion plate 15b, and the liquid crystal panel 11 are inserted into the casing 16 in this order.

  Thereafter, the transparent plate 15c is mounted in the facing plate 18, and the cover 17 is attached to the liquid crystal panel 11 from the left side in FIG. 3 so that the facing plate 18 is in close contact with the liquid crystal panel 11 in FIG. It is fixed to the casing 16 by hooking (not shown) so as to be pressed rightward. In this way, the assembly of the display unit 10 is completed without using screws.

  The casing 16 includes two boss portions 16a formed with screw holes 16b (see FIG. 6B). As shown in FIG. 2, the screws 7 are inserted into the screw holes 16b and tightened to tighten the boss portions. 16 a is fixed to the upper case 21. That is, the display unit 10 is fixed to the upper case 21. At this time, the printed circuit board 6 is also fixed to the upper case 21 at the same time.

  The opening 18a has the shape shown in FIG. 1 and is smaller than the liquid crystal panel 11 as shown in FIG. 3, and the opening 17a has a shape larger than the opening 18a. Thereby, the images of the liquid crystal panel 11, that is, the distance meter B and the door indicator C are visually recognized inside the opening 18a.

  Hereinafter, the structure for fixing the printed circuit board 13 to the casing 16, which is a feature of the present invention, will be described. The printed circuit board 13 is not fixed to the screw, but is fixed to the casing 16 using the light guide plate 14 and the casing 16.

  As shown in FIG. 4, the printed board 13 has a substantially rectangular shape, and cutout portions 13 a are formed at both upper ends in the drawing. On the printed circuit board 13, six light emitting diodes 12, an element for current adjustment and a terminal 13 b are mounted, and a multi-wire flexible lead wire 13 c connects the light emitting diode 12 and the printed circuit board 6 via the terminal 13 b. Connect electrically. Further, in the case where the liquid crystal panel 11 is a display device such as a dot multi LCD that requires operating voltage control depending on the temperature environment, since the printed circuit board 13 is close to maintain the display quality such as contrast, the temperature of the thermistor etc. A sensing element may be installed.

  As shown in FIG. 5A, the light guide plate 14 has a substantially square shape in which four ends are cut, and recesses (14b, 14e) are formed between both lower ends in the drawing. . The concave portion is provided with an incident surface 14b and a positioning surface 14e as positioning means, and both sides of the concave portion constitute a protruding portion 14a. As shown in FIG. 5B, the protrusion 14a is provided with a second contact surface 14d, and the first contact surface 14c is provided below the second contact surface 14d in the drawing. .

  The embossed surface 14g of the light guide plate 14 is inclined upward from the left side to the right side in the drawing. This is because the light emitted from the light emitting diode 12 incident on the incident surface 14b from the left side can be reflected to the upper side (the liquid crystal panel 11) by the embossed surface 14g. Two pins 14f for positioning the light guide plate 14 with respect to the casing 16 are formed on the textured surface 14g.

  In addition to the boss portion 16a shown in FIG. 6B, the casing 16 is inserted with a support portion 16c, an elastic portion 16d, and a pin 14f of the light guide plate 14 as shown in FIG. 6A. A hole 16e is formed. The support portion 16 c sandwiches the printed circuit board 13 with the first contact surface 14 c of the light guide plate 14 in the thickness direction of the printed circuit board 13. The elastic portion 16d sandwiches the printed circuit board 13 in one direction (left and right direction in FIG. 6C) of the printed circuit board 13 with the second contact surface 14d of the light guide plate 14. The claw 16d portion is formed to have elasticity in the left-right direction in FIG.

  The printed circuit board 13 is fixed to the casing 16 by fitting the protrusion 14a of the light guide plate 14 into the notch 13a of the printed circuit board 13 as shown in FIG.

  Specifically, after the printed circuit board 13 and the reflecting plate 15a are inserted into the casing 16 in this order, the light guide plate 14 is inserted into the thickness direction (up and down in the figure) as shown in FIG. In the direction) and inserted into the casing 16 so as to be sandwiched between the support portion 16c of the casing 16 and the first contact surface 14c of the light guide plate 14. Further, the light guide plate 14 is arranged so that the printed circuit board 13 is in one direction of the surface (vertical direction in FIG. 7B) and the elastic portion 16d of the casing 16 having elasticity in this direction and the second contact of the light guide plate 14. It is inserted into the casing 16 so as to be sandwiched by the contact surface 14d.

  At this time, the light guide plate 14 is positioned with respect to the casing 16 by inserting the pins 14 f into the positioning holes 16 e of the casing 16.

  Thereafter, the diffusion plate 15b and the liquid crystal panel 11 are inserted into the casing 16 in this order. Thereafter, the transparent plate 15c is mounted in the facing plate 18, and the cover 17 is placed in the right direction in FIG. 3 with respect to the casing 16 so that the facing plate 18 contacts the liquid crystal panel 11 from the left side in FIG. And is fixed to the casing 16 by hooking (not shown). In this way, the assembly of the display unit 10 is completed without using screws.

  That is, the positioning surface 14e of the light guide plate 14 positions the printed circuit board 13 with respect to the casing 16 in a direction perpendicular to one direction in the surface direction (the left-right direction in FIGS. 7A and 7B). The first contact surface 14c of the light guide plate 14 and the support portion 16c of the casing 16 are positioned in the plate thickness direction (vertical direction in FIGS. 3 and 7A).

  Further, the second contact surface 14d of the light guide plate 14 and the elastic portion 16d of the casing 16 position the printed circuit board 13 with respect to the casing 16 in one direction in the surface direction (vertical direction in FIG. 7B). . At this time, in the printed circuit board 13, the cover 17 presses the light guide plate 14 in one surface direction (downward in FIG. 7B) with respect to the casing 16 via the turn-back plate 18, the liquid crystal panel 11, and the like. It is fixed by the elastic force in this direction by the force and the force pushing upward in FIG. 7B of the elastic part 16d having elasticity in this direction.

  As a result, the printed circuit board 13 can be fixed to the casing 16 while suppressing the rattling while being positioned in one direction of the plate thickness direction and the surface direction without screw fixing. As a result, these assembly spaces can be made compact, and the display space can be used effectively.

  In the present embodiment, as shown in FIG. 3, the printed circuit board 13 is arranged substantially perpendicular to the dial 2, so that the space for fixing the printed circuit board 13 to the casing 16 becomes more compact. The display space can be used more effectively while obtaining the effect.

  In the present embodiment, the first contact surface 14c, the second contact surface 14d, and the incident surface 14b are arranged close to each other. On the other hand, since the incident surface 14b is necessarily disposed close to the printed circuit board 13 (light emitting diode 12), the first contact surface 14c and the second contact surface 14d are disposed close to the printed circuit board 13. Will be. Thereby, the above-described effects can be realized with a compact and simple configuration.

  Further, the support portion 16c of the casing 16 is slightly inclined downward on the left side of the support portion 16c in FIG. 6C due to the draft angle of the resin molding die of the casing 16. As a result, the left side of the printed circuit board 13 in FIG. 3 is also slightly inclined downward, so that the light from the light emitting diode 12 is slightly inclined to the left side in FIG. For this reason, the light from the light emitting diode 12 can easily reach the distal end side (the upper side in FIG. 3) of the light guide plate 14, and the liquid crystal panel 11 can be transmitted and illuminated more uniformly.

  The electric circuit configuration of the combination meter 1 according to the present embodiment described above will be described with reference to FIG.

  Electric power is constantly supplied from the battery 28 to the control device 8. Further, the control device 8 is connected so that the ignition switch 12 can detect its operating state (ON or OFF).

  In addition, various sensors are connected to the control device 8 so that detection signals can be input, and the movement 4, the liquid crystal panel 11, the light emitting diodes 5a, 5b, 12 and the like are driven by the control device 8. It is connected.

  The various sensors include a speed sensor 25 that detects the traveling speed of the automobile and a door sensor 26 that detects the half-door state of each door of the automobile. The half-door state is a state where the passenger is not in the normal closed position, that is, the door locking mechanism is not in the complete locking position. The door sensor 26 detects the half-door state of each door on the driver's seat, front passenger seat, rear seat right side, and rear seat left side.

  The speedometer A and the distance meter B are displayed based on the detection signal of the speed sensor 25. The door indicator C is driven based on a detection signal from the door sensor 26.

  When the ignition switch 27 is turned on, the control device 8 detects that the ignition switch 27 is turned on, and the control device 8 lights up the light emitting diodes 5a, 5b, and 12. As a result, the dial 2 and the hands 3 of the speedometer A are displayed as light emitting diodes, and the liquid crystal panel 11 is transmitted and illuminated.

  The light from the light emitting diode 12 enters the light guide plate 14 from the incident surface 14b of the light guide plate 14 according to the optical path P shown in FIGS. 2 and 3, and the diffusion plate 15b is formed by the embossed surface 14g of the light guide plate 14 and the reflection plate 15a. Reflected to. This reflected light is made uniform by the diffusion plate 15b and illuminates the liquid crystal panel 11 through transmission.

  Further, the control device 8 drives the movement 4 based on the detection signal from the speed sensor 25 to rotate the shaft 4a to a predetermined angle, that is, an angle corresponding to the traveling speed of the automobile. Further, the control device 8 drives the liquid crystal panel 11 to display the travel distance of the automobile on the distance meter B section and updates display data based on the detection signal from the speed sensor 25. Further, the control device 8 drives the liquid crystal panel 11 and displays the closed state of each door on the door indicator C unit based on the detection signal of the door sensor 26.

  As described above, in the combination meter 1 that is a display device for a vehicle according to an embodiment of the present invention, a speedometer A that is a pointer instrument having a dial 2 and a pointer 3 that rotates along the front surface of the dial. A liquid crystal panel 11 which is a display means for displaying desired information and is disposed on the front side of the pointer instrument A on the rotation center side of the pointer 3, and a light emitting diode 12 which is a light source for transmitting and illuminating the liquid crystal panel 11. A printed circuit board 13 which is an electric wiring board on which the light emitting diode 12 is mounted, a light guide plate 14 which is a light guide means for guiding light emitted from the light emitting diode 12 to the back surface of the liquid crystal panel 11, and a liquid crystal having an elastic portion 16d. The panel 11, the printed circuit board 13, and the casing 16 for housing the light guide plate 14 are provided, and the printed circuit board 13 is arranged in the thickness direction of the printed circuit board 13. It is sandwiched between the casing 16 and sandwiched between the light guide plate 14 and the elastic portion 16d in one direction of the surface of the printed circuit board 13, and is fixed to the casing 16, and the elastic portion 16d is in one direction of the surface direction. It is comprised so that it may have elasticity.

  Thereby, the combination meter 1 to which this printed circuit board 13 is not screw-fixed can be provided.

  In the above example, the positioning means for positioning the movement of the printed circuit board 13 in the horizontal direction in FIGS. 7A and 7B is formed as the positioning surface 14e formed on the light guide plate 14. It can be formed on the 16 side.

  Moreover, not only the above-mentioned example but various modifications can be considered.

FIG. 1 is a partial front view of a combination meter 1 which is a vehicle display device according to an embodiment of the present invention. 2 is a cross-sectional view taken along line II-II in FIG. FIG. 3 is an enlarged cross-sectional view of the display unit 10 shown in FIG. FIG. 4 is a plan view of the printed circuit board 13 which is the electric wiring board shown in FIG. 5A is a plan view of the light guide plate 14 which is the light guide means shown in FIG. 3, and FIG. 5B is a cross-sectional view taken along the line VB-VB in FIG. 6 (a) is a top view of the casing 16 shown in FIG. 3, FIG. 6 (b) is a bottom view of the casing 16, and FIG. 6 (c) is a VIB- in FIG. 6 (a). It is a VIB line sectional view. 7A is a view taken in the direction of arrow VIIA in a state where the cover 17 and the facing plate 18 are removed in FIG. 3, and FIG. 7B is a sectional view taken along the line VIIB-VIIB in FIG. is there. FIG. 8 is a circuit configuration diagram illustrating an electrical circuit configuration of the combination meter 1 which is a vehicle display device according to an embodiment of the present invention.

Explanation of symbols

1 Combination meter (Vehicle display device)
2 Dial, 2a General surface, 2b Bottom surface, 2c Character, 2d Scale 3 Pointer, 4 Movement, 4a Shaft 5a, 5b Light emitting diode, 6 Printed circuit board, 7 Screw, 8 Control device 10 Display unit, 11 Liquid crystal panel ), 11a Lead wire 12 Light emitting diode (light source)
DESCRIPTION OF SYMBOLS 13 Printed circuit board (electrical wiring board), 13a Notch part, 13b Terminal 13c Lead wire 14 Light guide plate (light guide means), 14a Protrusion part, 14b Incident surface 14c 1st contact surface, 14d 2nd contact surface, 14e Positioning surface (positioning means)
14f Pin, 14g Textured surface 15a Reflector plate, 15b Diffuser plate, 15c Transparent plate 16 Casing, 16a Boss part, 16b Screw hole 16c Support part, 16d Elastic part, 16e Positioning hole 17 Cover, 17a Opening part, 18 Flip plate, 18a Opening 21 Upper case, 22 Lower case, 23 Design plate, 24 Transparent cover 25 Speed sensor, 26 Door sensor 27 Ignition switch, 28 Battery A Speedometer (pointer instrument), B Distance meter (information), C Door indicator (information)

Claims (4)

A pointer instrument having a dial and a pointer that rotates along the front of the dial;
Display means for displaying desired information, arranged on the front side of the pointer instrument on the rotation center side of the pointer;
A light source that transmits and illuminates the display means;
An electrical wiring board on which the light source is mounted;
A light guide means for guiding the light emitted from the light source to the back surface of the display means;
An elastic part; and a casing that houses the display means, the electrical wiring board, and the light guide means,
The electric wiring board is sandwiched between the light guide means and the casing in the thickness direction of the electric wiring board, and the light guide means and the elastic portion in one direction of the surface of the electric wiring board. Sandwiched between and fixed to the casing,
The vehicular display device, wherein the elastic portion is configured to have elasticity in the one direction. The electrical wiring board is disposed substantially perpendicular to the dial,
The elastic portion has elasticity in the vertical direction,
2. The vehicle display according to claim 1, wherein the electric wiring board is configured to be sandwiched between the light guide unit and the elastic portion in the vertical direction and fixed to the casing. apparatus.   The light guide means contacts the electric wiring board, a first abutting surface that abuts in the plate thickness direction of the electric wiring board, the electric wiring board, and the one direction in the surface direction of the electric wiring board. The vehicle display device according to claim 1, further comprising a second contact surface in the vicinity of an incident surface on which light emitted from the light source is incident.   The said light guide means or the said casing is provided with the positioning means which positions the said electrical wiring board in the direction perpendicular | vertical to the said one direction in the surface direction of this electrical wiring board, The Claim 1 thru | or 3 characterized by the above-mentioned. The vehicle display device according to any one of the above.

Images