JP2018077092A - Display device for vehicles - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a display device for vehicles that looks nice to advantage.SOLUTION: A display device for vehicles includes a display unit for displaying the state of a vehicle. The display device for vehicles includes a plurality of light guide plates formed in shape of a plate having light transmissivity and arranged one on top of another at a position closer to a visible side than to the display unit, and a plurality of light source units constituting a pair one for one with each light guide plate, provided switchably between on and off, and causing light-source light to enter the inside via the outer edge of the corresponding light guide plate. Each light source unit emits light-source light mutually differing in color. Each light guide plate has reflection parts 36, 46 for reflecting the light-source light from the corresponding light source unit to the visual side.SELECTED DRAWING: Figure 9

Description

  The present invention relates to a vehicle display device including a display unit that displays a state of a vehicle.

  Conventionally, a vehicular display device that displays the state of a vehicle is known. The vehicle display device disclosed in Patent Document 1 is formed in a translucent plate shape, and is paired with a light guide plate disposed on the viewing side of the display unit and can be switched on and off. And a plurality of light source units that allow light source light to enter inside through the outer edge of the light guide plate.

  This light guide plate has a reflection part which reflects the light source light from a light source part to the visual recognition side inside.

Japanese Patent Laying-Open No. 2006-121890

  However, in Patent Document 1, only one light guide plate is provided. And only the same design according to a reflection part can always be displayed. Therefore, the appearance of the device was not sufficient.

  The present invention has been made in view of the above-described problems, and an object of the present invention is to provide a vehicle display device having a good appearance.

The present invention is a vehicle display device including a display unit (20) for displaying a state of a vehicle,
A plurality of light guide plates (30, 40) which are formed in a plate shape having translucency and are arranged so as to overlap each other on the viewing side from the display unit;
A plurality of light sources that are paired individually corresponding to each light guide plate, can be switched on and off, and allow light source light to enter inside through the outer edge portions (32, 42) of the corresponding light guide plate Part (50, 60),
Each light source unit emits light of different colors,
Each light guide plate has a reflecting portion (36, 46) that reflects the light source light from the corresponding light source portion to the viewing side.

  According to such an invention, the light guide plates provided with the reflecting portions that reflect the light source light from the light source portions to the viewing side are arranged so as to overlap each other. The plurality of light source units that individually pair with the respective light guide plates cause the light source lights of different colors to enter the inside through the outer edge portions of the corresponding light guide plates. Yes. By providing such a light source unit so that it can be switched on and off, a change or combination of colors or designs is realized by reflection of each reflection unit, and the appearance is improved.

  In addition, the code | symbol in a parenthesis is not what was intended to limit the content of invention, only to illustrate the structure which respond | corresponds in embodiment mentioned later in order to make an understanding of description content easy.

It is a front view of the display apparatus for vehicles in a 1st embodiment. It is the II-II sectional view taken on the line of FIG. It is the figure which expanded the III section of FIG. It is the figure which expanded the IV-IV sectional view of FIG. It is the figure which expanded the V section of FIG. It is the enlarged view which looked at the light-guide plate in VI direction in FIG. It is the VII-VII sectional view taken on the line of FIG. It is the VIII-VIII sectional view taken on the line of FIG. It is a figure for demonstrating the positional relationship of the reflection part of each light-guide plate. It is a partial front view of the display apparatus for vehicles in modification 1. It is the XI-XI sectional view taken on the line of FIG. It is the figure which expanded the XII part of FIG. It is the XIII-XIII sectional view taken on the line of FIG. It is the figure which looked at the outer edge member of FIG. 10 in the XIV direction. It is the figure which looked at the outer edge member of FIG. 11 in the XV direction.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

  The vehicle display device 100 according to an embodiment of the present invention is installed in an instrument panel that is mounted on a vehicle and faces a seat on which a passenger who views the device 100 is seated. As shown in FIG. 1, the vehicle display device 100 can display the state of the vehicle toward the viewing side where the occupant is located.

  As shown in FIG. 2, the vehicular display device 100 includes a case unit 10, a display unit 20, a plurality of light guide plates 30 and 40, a plurality of light guide plate light source units 50 and 60, and a plurality of outer edge members. 70. In the present embodiment, two each of the light guide plates 30 and 40 and the light source portions 50 and 60 for the light guide plate are provided.

  The case unit 10 includes a back case 12, a wind plate 14, and a light transmitting plate 16. The back case 12 is formed of, for example, a synthetic resin having a light shielding property, and covers the display unit 20 from the back side. The wind plate 14 is formed of, for example, a synthetic resin having a light shielding property, and is formed in a cylindrical shape having openings on the viewing side and the back side along the outer peripheral contour of the display unit 20. The translucent plate 16 is formed in a plate shape that closes the viewing-side opening of the wind plate 14 with a semi-translucent resin such as a colored acrylic resin. Thereby, the light guide plates 30 and 40 are covered with the light transmitting plate 16 from the viewing side. The translucent plate 16 of the present embodiment has a transmittance set to about 30% by smoke-colored coloring, but may be set to an arbitrary value of 30% or more.

  The display unit 20 displays the state of the vehicle using the display board 21. The display plate 21 is generally called a dial plate and is disposed between the back case 12 and the light guide plates 30 and 40. The display board 21 is formed in a flat plate shape, for example, by semi-translucent or light-shielding printing being partially applied to the surface on the viewing side of a base material made of a synthetic resin having translucency. In addition, it may replace with printing and the coating may be given.

  The display unit 20 includes a plurality of mechanical display units 22 a and 22 b and an image display unit 27. In particular, in the present embodiment, the image display unit 27 is disposed between the two mechanical display units 22a and 22b.

  Here, since the two mechanical display units 22a and 22b have the same configuration, the left mechanical display unit 22a will be described as a representative. The mechanical display unit 22 a includes a stepping motor 23, a pointer 24, and a pointer light source unit 25. The stepping motor 23 is held on the main circuit board 18 disposed between the back case 12 and the display board 21, that is, on the back side of the display board 21.

  The pointer 24 integrally includes a connecting portion 24a and an instruction portion 24b. The connecting portion 24 a is disposed through a through hole formed in the display plate 21 and is connected to the rotating shaft 23 a of the stepping motor 23. The instruction unit 24b is disposed between the display plate 21 and the light guide plates 30, 40, that is, on the viewing side with respect to the display plate 21, and has a needle shape. The pointer 24 is rotated according to the output of the stepping motor 23, and the vehicle state is displayed by indicating an indicator 21a arranged in an annular shape on the display board 21. Yes. In the present embodiment, the index 21a is composed of a scale and numbers.

  The pointer light source unit 25 includes a plurality of light emitting elements 25 a arranged on the main circuit board 18. In particular, in the present embodiment, the light emitting element 25a is a light emitting diode, and emits light when connected to a power source through a control circuit. The pointer 24 emits light when light from the pointer light source unit 25 illuminates the pointer 24.

  In the present embodiment, the left mechanical display unit 22a displays the vehicle speed as the state of the vehicle. The mechanical display 22b on the right side displays the engine speed as the state of the vehicle.

  The image display unit 27 has a liquid crystal display 28 disposed in the vicinity of the display plate 21 on the back side of the display plate 21. The liquid crystal display 28 of the present embodiment includes a liquid crystal panel using thin film transistors (TFTs), which is an active matrix type liquid crystal panel formed from a plurality of liquid crystal pixels arranged in a two-dimensional direction. It has been adopted. The liquid crystal display 28 has a rectangular display surface 28a for displaying an image on the viewing side.

  Further, as shown in FIG. 1, a portion of the display board 21 that overlaps the display surface 28a is surrounded by a display board light-shielding part 21b having a light-shielding property by printing, and a display panel light-transmitting part 21c having a light-transmitting property is displayed. It is arranged in a size slightly smaller than the surface 28a. In this way, the light of the image displayed on the display surface 28a is transmitted through the display panel translucent portion 21c.

  With such mechanical display units 22a and 22b and the image display unit 27, the display plate 21 of the display unit 20 has a display area DA for displaying on the viewing side. On the other hand, the boundary area between the mechanical display units 22a and 22b and the image display unit 27 and the outer peripheral part of the mechanical display units 22a and 22b and the image display unit 27 surround the display area DA and display on the viewer side. A peripheral area SA that is not performed is provided.

  As shown in FIG. 2, each of the light guide plates 30 and 40 is formed in a flat plate shape by using a synthetic resin having translucency, for example. Each of the light guide plates 30 and 40 is disposed on the viewing side with respect to the display unit 20. The respective light guide plates 30 and 40 are arranged so as to overlap each other, and are arranged substantially parallel to each other by being arranged in the plate thickness direction TD. The plate thicknesses of the light guide plates 30 and 40 are set to be substantially equal, and a gap of about one plate thickness is provided between the light guide plate 30 and the light guide plate 40.

  In addition, the plate | board thickness direction TD of this embodiment is substantially corresponded with the normal line direction of the surface where the area of each light-guide plate 30 and 40 is the largest.

  Each light source part 50, 60 for light guide plates is paired with the corresponding light guide plates 30, 40 corresponding to each light guide plate 30, 40 individually. Each light guide plate light source section 50, 60 has a plurality of light emitting elements 52, 62. In particular, in the present embodiment, the light emitting elements 52 and 62 are light emitting diodes, and emit light source light when connected to a power source through a control circuit. Each light emitting element 52, 62 belonging to each light source unit 50, 60 is provided so as to be able to switch on or off. Each light emitting element 62 belonging to the light source unit 60 that forms a pair with the light guide plate 40 on the viewing side and each light emitting element 52 that belongs to the light source unit 50 that forms a pair with the light guide plate 30 on the back side emit light in different colors. It has become. Thereby, each light source part 50 and 60 emits the light source light of a mutually different color. As the color of the light source light, a color indicating safety, a color indicating comfortable driving, a color indicating danger, and the like can be respectively employed. For example, the light source unit 50 emits blue light source light and the light source unit 60 emits red light source light, but other colors may be adopted. The light source units 50 and 60 are configured to cause light source light to enter the light guide plates 30 and 40 through the outer edge portions 32 and 42 of the corresponding light guide plates 30 and 40, respectively.

  The arrangement of the light emitting elements 52 and 62 of the light source units 50 and 60 will be described in more detail. In the present embodiment, a plurality of light source circuit boards 19 are arranged on the outer periphery of the light guide plates 30 and 40 so as to surround the entire periphery. The light emitting elements 52 and 62 are arranged on the light source circuit board 19 so as to surround the outer edge portions 32 and 42 of the light guide plates 30 and 40 corresponding to the light source portions 50 and 60, respectively.

  Here, as shown in FIG. 3, the light emitting elements 52 and 62 belonging to the different light source sections 50 and 60 are arranged so as to overlap each other in the plate thickness direction TD. In other words, the light emitting element 52 belonging to the light source unit 50 and the light emitting element 62 belonging to the light source unit 60 overlap each other in the direction perpendicular to the display plate 21 of the display unit 20.

  Each outer edge member 70 is disposed between the outer edge portions 32 and 42 of the flat light guide plates 30 and 40 and the light emitting elements 52 and 62. Each outer edge member 70 integrally has a plurality of outer edge light guide portions 72a and 72b and a light source light partitioning portion 76 by two-color molding. Two outer edge light guides 72 a and 72 b are provided in the same number as the light guide plates 30 and 40. And each outer edge light guide part 72a, 72b is each arrange | positioned between the light guide plate 30 and the light source part 50 which make a pair, and between the light guide plate 40 and the light source part 60, respectively. Each outer edge light guide part 72a, 72b is formed so that light source light can be guided, for example with the synthetic resin which has translucency. Each outer edge light guide part 72a, 72b has a light source facing surface 73 formed in a smooth convex shape so as to face the light emitting elements 52, 62 of the corresponding light source part 50, 60. Moreover, each outer edge light guide part 72a, 72b has the board opposing surface 74 formed in smooth planar shape facing the outer edge parts 32 and 42 of the corresponding light guide plates 30 and 40. As shown in FIG. The size of each plate facing surface 74 is matched with the thickness of the light guide plates 30 and 40, and the size of each light source facing surface 73 is larger than the size of each plate facing surface 74. Each of the outer edge light guides 72 a and 72 b causes the light source light of the corresponding light source units 50 and 60 to enter the light source facing surface 73 and to exit from the plate facing surface 74.

  A light source light partitioning section 76 is disposed between the outer edge light guide section 72a and the outer edge light guide section 72b. The light source light partition unit 76 is formed of, for example, a light-blocking elastomer and blocks light source light. The light source light partition section 76 is formed with a plurality of cylindrical holes surrounding the outer edge light guide sections 72a and 72b except for the facing surfaces 73 and 74 corresponding to the outer edge light guide sections 72a and 72b. Yes. The light source light partition 76 extends from the light source facing surfaces 73 toward the light source portions 50 and 60 and from the plate facing surfaces 74 toward the light guide plates 30 and 40. Further, an enclosing portion 77 provided on the light source section 50, 60 side of the light source light dividing section 76 encloses the light source circuit board 19.

  When the light source light partitioning section 76 optically partitions each pair, for example, even if light source light is emitted from the light source section 50, it is suppressed that the light enters the light guide plate 40 belonging to a different pair. Similarly, even if light source light is emitted from the light source unit 60, for example, it is suppressed from entering the light guide plates 30 belonging to different pairs.

  The outer edge member 70 is sandwiched and held between the back case 12 and the wind plate 14. Further, the outer edge member 70 holds the light guide plates 30, 40 by the end portions of the light source light partition 76 on the side of the light guide plates 30, 40 sandwiching the outer edges 32, 42. Furthermore, as shown in FIG. 4, through holes 34 and 44 that penetrate in the plate thickness direction TD are provided at the four corners of the outer edge portions 32 and 42 of the light guide plates 30 and 40, respectively. The light guide plates 30 and 40 are positioned by the protruding pins 12 a protruding through the through holes 34 and 44. Here, the diameter of the through hole 44 of the light guide plate 40 is smaller than the diameter of the through hole 34 of the light guide plate 30, and the diameter of the protruding pin 12 a is greater in the portion that passes through the through hole 44. It is smaller than the part that penetrates. For this reason, the light guide plates 30 and 40 can be easily assembled to the back case 12. Further, due to the flexibility of the elastomer of the light source light partition section 76, abnormal noise such as a collision sound between the light guide plates 30 and 40 and the case section 10 that can be generated according to the vibration of the vehicle is suppressed.

  Furthermore, each light-guide plate 30 and 40 has the reflection parts 36 and 46, as shown to FIGS. The reflection parts 36 and 46 reflect the light source light from the corresponding light source parts 50 and 60 to the viewer side.

  Specifically, the light guide plate 30 on the back side will be described in detail. The reflecting portion 36 has a plurality of concave and convex portions 37 that protrude from the back side of the light guide plate 30 into the light guide plate 30. The projecting dimension of each uneven portion 37 is 15 μm. Each concavo-convex part 37 has an inclined reflection surface 37a facing the light source unit 50, and an inclined wall surface 37b arranged back to back with the inclined reflection surface 37a. The inclined reflecting surface 37a is formed in a planar shape capable of reflecting the light source light guided through the light guide plate 30 to the viewing side by making an angle of 45 ° with the plate thickness direction TD of the light guide plate 30. Yes. The inclined wall surface 37b forms an angle of 5 ° or less with respect to the plate thickness direction TD of the light guide plate 30 and is formed in a planar shape. The dimension in the direction ED in which the inclined reflecting surface 37a and the inclined wall surface 37b extend is 75 μm.

  An inclined side surface 37c is provided between the side end portion of the inclined reflection surface 37a and the side end portion of the inclined wall surface 37b. Each inclined side surface 37c provided on both sides forms an angle of 5 ° or less with respect to the plate thickness direction TD of the light guide plate 30, and is formed in a planar shape.

  The plurality of concavo-convex portions 37 are separated one by one via the flat portion 38 of the light guide plate 30 and are arranged in the two-dimensional directions ED and ND at a predetermined arrangement pitch PED and PND. Specifically, the arrangement pitch PED in the direction ED is 150 μm, and the arrangement pitch PND in the direction ND orthogonal to the direction ED is 75 μm.

  The concave-convex portion 47, the inclined reflection surface 47a, the inclined wall surface 47b, and the inclined side surface 47c of the light guide plate 40 on the viewing side have the same configuration as the light guide plate 30. That is, the plurality of concavo-convex portions 47 are also separated one by one via the flat portion 48 of the light guide plate 40 and are arranged in the two-dimensional directions ED and ND at a predetermined arrangement pitch PED and NED. In addition, illustration of the detailed shape of the uneven | corrugated | grooved part 47 is represented by the code | symbol with a parenthesis in common with FIGS.

  In each of the light guide plates 30 and 40, a pattern is formed as shown in FIGS. The symbols are different from each other in each of the light guide plates 30 and 40. In FIG. 1, a region where the uneven portion 37 of the reflecting portion 36 by the light guide plate 30 is arranged is illustrated by hatching. Actually, when only the light source unit 50 is turned on among the light source units 50 and 60, the reflection unit 46 of the light guide plate 40 is hardly visually recognized, but is visually recognized as shown in FIG. Even when only the light source unit 60 is turned on, the reflection unit 36 is hardly visually recognized. In FIG. 9, the arrangement of the concavo-convex portion 47 of the reflection portion 46 by the light guide plate 40 is also shown.

  Accordingly, in each of the light guide plates 30 and 40, the reflecting portions 36 and 46 are arranged in regions that are at least partially displaced from each other. Specifically, in the light guide plate 30 on the back side, the reflecting portion 36 is a peripheral reflecting portion 36a provided in an area corresponding to the peripheral area SA. In the light guide plate 40 on the viewing side, the reflection unit 46 is provided in a region corresponding to the display region DA, and serves as a display superimposed reflection unit 46a that superimposes the light source light reflected on the viewing side on the display of the display unit 20. Here, in the present embodiment, the region corresponding to the peripheral region SA is a region on the light guide plate 30 that overlaps the peripheral region SA and the vertical direction of the display plate 21 or the plate thickness direction TD of the light guide plates 30 and 40. Similarly, the area corresponding to the display area DA is an area on the light guide plate 40 that overlaps the display area DA and the vertical direction of the display plate 21 or the plate thickness direction TD of the light guide plates 30 and 40.

  In more detail, the peripheral reflection part 36a is arrange | positioned at the annular | circular shape so that the circumference | surroundings of the mechanical display part 22a may be bordered over a perimeter. Further, the peripheral reflection part 36a is arranged in an annular shape so as to border the entire periphery of the mechanical display part 22b. Further, the peripheral reflection part 36a is arranged in a rectangular ring shape so as to border the periphery of the image display part 27 over the entire circumference. In the area corresponding to the proximity of the mechanical display unit 22a or 22b and the image display unit 27, the borders of the peripheral reflection unit 36a are connected to each other.

  The display superimposing reflection part 46a is arranged in the entire region in the region surrounded by the peripheral reflection part 36a. That is, they are discretely arranged at three locations corresponding to the display areas DA of the mechanical display units 22a and 22b and the image display unit 27. In FIG. 9, fine slanted hatching corresponds to the arrangement of the reflecting part 36 (that is, the peripheral reflecting part 36 a), and rough slanted hatching corresponds to the arrangement of the reflecting part 46 (that is, the display superimposed reflecting part 46 a).

(Function and effect)
The operational effects of the present embodiment described above will be described below.

  According to the present embodiment, the light guide plates 30 and 40 provided with the reflection portions 36 and 46 that reflect the light source light from the light source portions 50 and 60 to the viewing side are arranged so as to overlap each other. The plurality of light source units 50 and 60 that individually pair with each of the light guide plates 30 and 40 transmit the light sources of different colors via the outer edge portions 32 and 42 of the corresponding light guide plates 30 and 40. Light source light is made to enter inside. By providing such light source units 50 and 60 so that they can be switched on and off, the reflection or reflection of the reflecting units 36 and 46 realizes a change or combination of colors or designs, thereby improving the appearance.

  Moreover, according to this embodiment, each reflection part 36 and 46 is arrange | positioned in the area | region where a part mutually shifted | deviated. If it carries out like this, since a reflective position can be changed by switching ON / OFF of each light source part 50 and 60, appearance improves.

  Further, according to the present embodiment, the light emitting elements 52 and 62 belonging to the different light source units 50 and 60 are arranged to overlap each other in the plate thickness direction TD. For example, when the light source unit 50 or 60 that is turned on is switched to another light source unit 60 or 50, the brightness balance on the light guide plates 30 and 40 is changed before and after the light source unit 60 or 50, so that it is difficult to be visually recognized. , Improve the appearance.

  Moreover, according to this embodiment, the uneven | corrugated | grooved parts 37 and 47 which protrude from the back side of the light-guide plates 30 and 40 to the inside of the said light-guide plates 30 and 40 form a pattern. By these uneven portions 37 and 47, the reflecting portions 36 and 46 can easily reflect the light source light to the viewing side.

  Moreover, according to this embodiment, since a design differs in each light-guide plate 30 and 40, by switching the light source parts 50 and 60 to light, it becomes possible to visually recognize a different design and an appearance improves.

  Further, according to the present embodiment, in one light guide plate 30, the peripheral reflection part 36 a is provided in an area corresponding to the peripheral area SA of the display unit 20, and in another certain light guide plate 40, the display superimposed reflection part 46 a is displayed. Light source light provided in an area corresponding to the area DA and reflected to the viewing side is superimposed on the display of the display unit 20. The peripheral reflection part 36a and the display overlapping reflection part 46a are designed according to the region arrangement of the display part 20 as described above, so that the appearance is enhanced.

(Other embodiments)
Although one embodiment of the present invention has been described above, the present invention is not construed as being limited to the embodiment, and can be applied to various embodiments without departing from the gist of the present invention. it can.

  Specifically, as a first modification, a configuration in which a plurality of light source units correspond to one light guide plate may be employed. Specifically, in the example of FIGS. 10 to 15, the vehicle display device 200 includes one light guide plate 230 as illustrated in FIG. 11. The light guide plate 230 is formed in the same manner as in the first embodiment.

  Here, as shown in FIG. 12, two light guide plate light source units 250 and 260 are provided for one light guide plate 230. Each light source unit 250 and 260 has a plurality of light emitting elements 252 and 262 as in the first embodiment, and each light emitting element 252 belonging to the light source unit 250 and each light emitting element 262 belonging to the light source unit 260 are mutually connected. It emits light in different colors. The light emitting elements 252 and 262 belonging to different light source units 250 and 260 are arranged to overlap each other in the plate thickness direction TD. In this way, the light emitting elements 252 and 262 are arranged in two rows for each of the light source units 250 and 260, so that they belong to the same light source unit 250 or 260 as compared with the case where the light emitting elements 252 and the light emitting elements 262 are alternately arranged in one row. The arrangement pitch of the light emitting elements 252 or 262 can be narrowed. By narrowing the arrangement pitch of the light emitting elements 252 or 262, luminance unevenness of the light source light reflected by the reflecting portion 236 can be reduced.

  As shown in FIGS. 12 to 15, each outer edge member 270 is disposed between the outer edge portion 232 of the flat light guide plate 230 and the light emitting elements 252 and 262. Each outer edge member 270 integrally has an outer edge light guide part 272 and a light shielding part 276 by two-color molding. The outer edge light guide portion 272 is formed of, for example, a light-transmitting synthetic resin so that light from the light source can be guided. The outer edge light guide 272 has a plate facing surface 274 facing one light guide plate 230 and two light source facing surfaces 273a and 273b respectively facing two light emitting elements 252 and 262 overlapping in the thickness direction TD. And has a Y-shaped cross section provided with a branch connecting the opposing surfaces 273a and 273b. Each of the light source facing surfaces 273a, 273b and the plate facing surface 274 is formed in a smooth flat shape.

  The outer edge light guide unit 272 causes the light source light of the light source units 250 and 260 to be incident on the light source facing surfaces 273a and 273b and is emitted from the plate facing surface 274.

  The light shielding part 276 is formed of, for example, a light-shielding elastomer, and has a cylindrical shape that surrounds the outer edge light guide part 272 except for the facing surfaces 273a, 273b, and 274. Thereby, when the light source light emitted from the light emitting elements 252 and 262 is guided by the outer edge light guide part 272, it is difficult to leak outside the light shielding part 276. The light shielding portion 276 extends to the light guide plate 230 side from the plate facing surface 274.

  Further, the outer edge member 270 is sandwiched and held between the back case 12 and the wind plate 14. Furthermore, the outer edge member 270 holds the light guide plate 230 by the light guide plate 230 side end of the light shielding portion 276 sandwiching the light guide plate 230.

  Such a vehicle display device 200 can switch the light source units 250 and 260 to be lit so that one of the two light source units 250 and 260 is lit. Thereby, the color visually recognized by the reflection part 236 can be switched and visually recognized by the different color (for example, red or blue) corresponding to each light source part 250,260. In addition, the two light source parts 250 and 260 may be provided so that both can be turned on simultaneously.

  As a second modification, three or more light guide plates 30 and 40 may be provided.

  As a third modification, the reflecting portions 36 and 46 in the respective light guide plates 30 and 40 may be arranged in regions where the entire regions overlap each other. Therefore, the patterns formed by the concave and convex portions 37 and 47 may be the same in each of the light guide plates 30 and 40.

  As the modified example 4, any various symbols can be adopted as the symbols formed by the uneven portions 37 and 47.

  As a fifth modification, the inclined reflecting surfaces 37a and 47a in the concavo-convex portions 37 and 47 may be formed in a curved surface shape.

  As a sixth modification, the light emitting elements 52 and 62 belonging to different light source units 50 and 60 do not have to overlap each other in the plate thickness direction TD, and may be arranged in a zigzag manner, for example.

  DESCRIPTION OF SYMBOLS 100 Display apparatus for vehicles, 20 Display part, 30, 40 Light guide plate, 32, 42 Outer edge part, 36, 46 Reflecting part, 50, 60 Light source part

Claims (6)

A vehicle display device including a display unit (20) for displaying a state of a vehicle,
A plurality of light guide plates (30, 40) that are formed in a plate shape having translucency and are arranged so as to overlap each other on the viewing side with respect to the display unit;
A plurality of light source plates that are paired individually corresponding to each of the light guide plates and that can be switched on and off and that allow light source light to enter inside through the outer edge portions (32, 42) of the corresponding light guide plate. A light source part (50, 60),
Each of the light source units emits light sources of different colors,
Each said light-guide plate is a vehicle display apparatus which has a reflection part (36,46) which reflects the light source light from the corresponding said light source part to the visual recognition side.   2. The vehicle display device according to claim 1, wherein in each of the light guide plates, each of the reflecting portions is disposed in a region where at least a part of each of the reflecting portions is shifted from one another. Each of the light source units has a plurality of light emitting elements (52, 62) that emit the light source light,
Each of the light guide plates is arranged with the thickness direction (TD) aligned with each other,
3. The vehicle display device according to claim 1, wherein light emitting elements belonging to different light source units are arranged to overlap each other in the plate thickness direction.   The said reflection part in each said light-guide plate has an uneven | corrugated | grooved part (37, 47) which protrudes into the inside of the said light-guide plate from the back side of the said light-guide plate, and forms a pattern. Vehicle display device.   The vehicle display device according to claim 4, wherein the symbols are different from each other in each of the light guide plates. The display unit includes a display area (DA) for displaying on the viewer side, and a peripheral area (SA) surrounding the display area.
Of the plurality of light guide plates, the reflection portion (36) in at least one of the light guide plates (30) is a peripheral reflection portion (36a) provided in a region corresponding to the peripheral region,
Of the plurality of light guide plates, the reflection portion (46) in at least one light guide plate (40) different from the light guide plate provided with the peripheral reflection portion is provided in a region corresponding to the display region. The vehicle display device according to any one of claims 1 to 5, wherein the display device is a display superimposing / reflecting unit (46a) that superimposes the light source light reflected to the viewing side on the display of the display unit.

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