JP6624015B2 - Display device for vehicles - Google Patents

Description

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

  2. Description of the Related Art Conventionally, a vehicle display device that displays a state of a vehicle has been known. The display device for a vehicle disclosed in Patent Literature 1 is formed in a plate shape having a light-transmitting property, and forms a pair with a light guide plate disposed on the viewing side with respect to the display unit, and can be turned on and off. , And a plurality of light source sections for inputting the light source light inward via the outer edge of the light guide plate.

  This light guide plate has a reflection portion that reflects light source light from the light source unit to the viewing side on the inside.

JP-A-2006-121890

  However, in Patent Document 1, only one light guide plate is provided. Then, only the same symbol corresponding to the reflecting portion can be always 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 display device for a vehicle including a display unit (20) for displaying a state of a vehicle,
A case part (10);
A plurality of light guide plates (30, 40) which are formed in a plate shape having a light transmitting property and are arranged so as to overlap with each other on the viewing side relative to the display unit;
A plurality of light sources which are individually paired with the respective light guide plates, are provided so as to be switchable between on and off, and which emit light source light inward via the outer edges (32, 42) of the corresponding light guide plates. (50, 60)
A plurality of cylindrical holes individually corresponding to each pair of the light source portion and the outer edge portion, the holes having openings corresponding to the light source portion side and the outer edge portion side, and light source light for optically partitioning each pair. And a partition (76),
Each light source unit emits light of different colors,
Each light guide plate has a reflector (36, 46) for reflecting the light from the corresponding light source to the viewing side,
The case portion has a light-shielding window plate (14) which is open on the viewing side and the back side, and is formed in a cylindrical shape along the outer peripheral contour of the display portion.
The light source light dividing portion disposed on the back surface of the wind plate is formed integrally with the convex lens-shaped light guiding portions (72a, 72b) disposed inside each cylindrical hole .

  According to such an invention, the light guide plates provided with the reflecting portions for reflecting the light from the light source to the viewing side are arranged so as to overlap with each other. The plurality of light source units individually paired with the respective light guide plates, so that the light source lights of different colors from each other are incident on the inside through the outer edge of the corresponding light guide plate. I have. By providing such a light source unit so as to be switchable between on and off, a change or combination of colors or patterns is realized by reflection of each reflection unit, and the appearance is improved.

  In addition, the code | symbol in a parenthesis is only what illustrated the corresponding structure in embodiment mentioned later in order to make an understanding of description content easy, and does not intend limiting the content of invention.

It is a front view of the display for vehicles in a 1st embodiment. FIG. 2 is a sectional view taken along line II-II of FIG. 1. It is the figure which expanded the III section of FIG. FIG. 4 is an enlarged view of a cross section taken along line IV-IV in FIG. 1. It is the figure which expanded the V section of FIG. FIG. 6 is an enlarged view of the light guide plate viewed in a VI direction in FIG. 5. FIG. 7 is a sectional view taken along line VII-VII of FIG. 6. FIG. 7 is a sectional view taken along line VIII-VIII in FIG. 6. It is a figure for explaining the positional relationship of the reflection part of each light guide plate. FIG. 9 is a partial front view of a vehicle display device according to a first modification. FIG. 11 is a sectional view taken along line XI-XI in FIG. 10. It is the figure which expanded the XII part of FIG. FIG. 13 is a sectional view taken along line XIII-XIII of FIG. 12. 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 one embodiment of the present invention is mounted on a vehicle and installed on an instrument panel facing a seat on which an occupant who views the device 100 sits. As shown in FIG. 1, the vehicle display device 100 is capable of displaying the state of the vehicle toward a viewing side where the occupant is located.

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

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

  The display unit 20 displays the state of the vehicle using the display panel 21. The display panel 21 is generally called a dial, and is disposed between the rear case 12 and the light guide plates 30 and 40. The display plate 21 is formed in a flat plate shape by partially printing semi-transparent or light-shielding printing on the surface on the viewing side of a base made of, for example, a synthetic resin having a light-transmitting property. Note that a painting may be applied instead of printing.

  The display unit 20 has a plurality of mechanical display units 22a and 22b and an image display unit 27. In particular, in the present embodiment, the image display unit 27 is arranged so as to be sandwiched between the two mechanical display units 22a and 22b on the left and right.

  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 22a includes a stepping motor 23, a pointer 24, and a pointer light source unit 25. The stepping motor 23 is held by the main circuit board 18 disposed between the rear case 12 and the display board 21, that is, on the back side of the display board 21.

  The pointer 24 has a connecting portion 24a and a pointing portion 24b integrally. The connecting portion 24 a is disposed through a through hole formed in the display panel 21, and is connected to the rotating shaft 23 a of the stepping motor 23. The indicator 24b is disposed between the display plate 21 and the light guide plates 30, 40, that is, on the viewing side of the display plate 21, and has a needle shape. The pointer 24 is adapted to rotate in accordance with the output of the stepping motor 23, and the state of the vehicle is displayed by pointing to an indicator 21a arranged annularly on the display plate 21. I have. In the present embodiment, the index 21a is composed of scales and numbers.

  The pointer light source unit 25 has 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 supply through a control circuit. The light of the pointer light source 25 illuminates the pointer 24 so that the pointer 24 emits light.

  In the present embodiment, the left mechanical display unit 22a displays the vehicle speed as the state of the vehicle. The mechanical display unit 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 on the back side of the display panel 21 and close to the display panel 21. The liquid crystal display device 28 of the present embodiment includes a liquid crystal panel using a thin film transistor (TFT), which is an active matrix type liquid crystal panel formed of a plurality of liquid crystal pixels arranged in a two-dimensional direction. 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 plate 21 overlapping with the display surface 28 a is surrounded by a display plate light-shielding portion 21 b having a light-shielding property by printing, and a light-transmitting display plate light-transmitting portion 21 c is displayed. It is arranged in a size slightly smaller than the surface 28a. The light of the image displayed on the display surface 28a in this manner passes through the light transmitting portion 21c of the display panel.

  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 between the mechanical display units 22a and 22b and the image display unit 27 and the outer peripheral portions 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. There is a peripheral area SA that is not performed.

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

  Note that the plate thickness direction TD of the present embodiment substantially matches the normal direction of the surface of each of the light guide plates 30 and 40 having the largest area.

  Each light guide plate light source unit 50, 60 individually corresponds to each light guide plate 30, 40, and forms a pair with the corresponding light guide plate 30, 40. Each light source unit 50, 60 for a light guide plate 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 supply through a control circuit. Each of the light emitting elements 52 and 62 belonging to each of the light source units 50 and 60 is provided so as to be switchable between ON and OFF. Each light emitting element 62 belonging to the light source unit 60 paired with the light guide plate 40 on the viewing side, and each light emitting element 52 belonging to the light source unit 50 paired with the light guide plate 30 on the back side emit light in different colors. It has become. Thus, each of the light source units 50 and 60 emits light of different colors. As the color of the light source light, a color indicating safety, a color indicating comfortable driving, a color indicating danger, and the like may be respectively adopted. 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. Each of the light source units 50 and 60 is configured to make the light source light enter the respective light guide plates 30 and 40 via the outer edges 32 and 42 of the corresponding light guide plates 30 and 40.

  The arrangement of the light emitting elements 52 and 62 of each light source unit 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, 62 are arranged on the light source circuit board 19 so as to surround the outer edges 32, 42 of the light guide plates 30, 40 corresponding to the respective light source sections 50, 60 all around.

  Here, as shown in FIG. 3, the light emitting elements 52 and 62 belonging to the different light source units 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 in the direction perpendicular to the display plate 21 of the display unit 20.

  Each outer edge member 70 is disposed between the outer edges 32, 42 of the light guide plates 30, 40 in a flat plate shape and each of the light emitting elements 52, 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. The two outer edge light guide portions 72a and 72b are provided in the same number as the light guide plates 30 and 40. The outer edge light guides 72a and 72b are arranged between the light guide plate 30 and the light source unit 50 and between the light guide plate 40 and the light source unit 60, respectively. Each of the outer edge light guide portions 72a and 72b is formed of, for example, a synthetic resin having a light transmitting property so as to be able to guide the light source light. Each outer edge light guide portion 72a, 72b has a light source facing surface 73 formed in a smooth convex shape facing the light emitting elements 52, 62 of the corresponding light source portions 50, 60. Each of the outer edge light guide portions 72a and 72b has a plate-facing surface 74 formed in a smooth plane, facing the outer edge portions 32 and 42 of the corresponding light guide plates 30 and 40. The size of each plate facing surface 74 is adjusted to the plate 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. The outer edge light guides 72a and 72b allow the light from the corresponding light sources 50 and 60 to enter the light source facing surface 73 and exit from the plate facing surface 74.

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

  When the light source light partitioning section 76 optically partitions each pair, for example, even when the light source light is emitted from the light source section 50, it is suppressed from entering the light guide plates 40 belonging to different pairs. Similarly, even if the 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 rear case 12 and the window plate 14. Further, the outer edge members 70 hold the light guide plates 30 and 40 by sandwiching the outer edges 32 and 42 between the light guide plate 30 and 40 end portions of the light source light partitioning section 76. Further, as shown in FIG. 4, through holes 34, 44 penetrating in the plate thickness direction TD are provided at the four corners of the outer edges 32, 42 of the respective light guide plates 30, 40, so as to be viewed from the rear case 12 toward the viewing side. The light guide plates 30, 40 are positioned by the protruding protruding pins 12a being disposed through the respective through holes 34, 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 It is smaller than the penetrating part. Therefore, the light guide plates 30, 40 can be easily assembled to the rear case 12. In addition, due to the flexibility of the elastomer of the light source light partitioning section 76, abnormal noise such as a collision sound between the light guide plates 30, 40 and the case section 10 which can be generated according to the vibration of the vehicle is suppressed.

  Further, each of the light guide plates 30 and 40 has reflection portions 36 and 46, respectively, as shown in FIGS. The reflection units 36 and 46 reflect the light source light from the corresponding light source units 50 and 60 to the viewing side.

  Describing specifically the light guide plate 30 on the back side, the reflection unit 36 has a plurality of uneven portions 37 protruding from the back side of the light guide plate 30 to the inside of the light guide plate 30. Each protrusion 37 has a protrusion size of 15 μm. Each concave-convex portion 37 has an inclined reflecting surface 37a facing the light source unit 50, and an inclined wall surface 37b arranged to be back to back with the inclined reflecting surface 37a. The inclined reflection surface 37a is formed in a flat shape capable of reflecting light source light guided inside the light guide plate 30 to the viewing side by forming an angle of 45 ° with respect to the plate thickness direction TD of the light guide plate 30. I have. The inclined wall surface 37b has 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 of the inclined reflecting surface 37a and the side end of the inclined wall surface 37b. Each inclined side surface 37c provided on both sides makes an angle of 5 ° or less with respect to the thickness direction TD of the light guide plate 30, and is formed in a planar shape.

  The plurality of uneven portions 37 are arranged one by one via the flat portion 38 of the light guide plate 30 and are arranged in a two-dimensional direction ED, ND at a predetermined arrangement pitch PED, 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 uneven 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 uneven portions 47 are also arranged one by one via the flat portion 48 of the light guide plate 40 and are arranged in the two-dimensional directions ED, ND at a predetermined arrangement pitch PED, NED. The detailed shape of the concavo-convex portion 47 is shown in parentheses in common with FIGS.

  In each of the light guide plates 30 and 40, a pattern is formed by the arrangement of the plurality of uneven portions 37 and 47, as shown in FIGS. The patterns 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 reflection portion 36 by the light guide plate 30 is arranged is shown by hatching. Actually, when only the light source unit 50 of the light source units 50 and 60 is turned on, the reflection unit 46 of the light guide plate 40 is hardly visually recognized, and 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. FIG. 9 also shows the arrangement of the concave / convex portions 47 of the reflecting portion 46 by the light guide plate 40.

  Therefore, in each of the light guide plates 30, 40, the reflecting portions 36, 46 are arranged in regions where at least a part thereof is shifted from each other. More specifically, in the light guide plate 30 on the rear side, the reflecting portion 36 is a peripheral reflecting portion 36a provided in a region corresponding to the peripheral region SA. In the light guide plate 40 on the viewing side, the reflector 46 is provided in an area corresponding to the display area DA, and serves as a display overlapping reflector 46 a for superimposing light source light reflected on the viewer 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 in the vertical direction of the display panel 21 or the 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 in the vertical direction of the display plate 21 or in the thickness direction TD of the light guide plates 30 and 40.

  More specifically, the peripheral reflecting portion 36a is arranged in an annular shape so as to border the entire periphery of the mechanical display portion 22a. The peripheral reflecting portion 36a is arranged in an annular shape so as to border the entire periphery of the mechanical display portion 22b. The peripheral reflecting portion 36a is arranged in a rectangular ring shape so as to border the entire periphery of the image display portion 27. In a region 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 superimposition reflection part 46a is arranged in the whole area surrounded by the peripheral reflection part 36a. That is, they are discretely arranged at three locations corresponding to the mechanical display units 22a and 22b and the display area DA of the image display unit 27. Note that in FIG. 9, fine inclined hatching corresponds to the arrangement of the reflecting portions 36 (that is, the peripheral reflecting portions 36a), and coarse inclined hatching corresponds to the arrangement of the reflecting portions 46 (that is, the display overlapping reflecting portions 46a).

(Effect)
The operation and effect of the embodiment described above will be described below.

  According to the present embodiment, the light guide plates 30, 40 provided with the reflection portions 36, 46 for reflecting the light source light from the light source portions 50, 60 toward the viewing side are arranged to overlap with each other. The plurality of light source units 50, 60 individually paired with the respective light guide plates 30, 40 transmit light sources of different colors from each other via the outer edge portions 32, 42 of the corresponding light guide plates 30, 40. The light from the light source is incident on the inside. Since the light sources 50 and 60 are provided so as to be switchable between ON and OFF, the reflection or reflection of each of the reflection portions 36 and 46 realizes a change or combination of colors or patterns, thereby improving the appearance.

  Further, according to the present embodiment, each of the reflecting portions 36 and 46 is arranged in a region where at least a part thereof is shifted from each other. In this case, the reflection position can be changed by switching on / off of each of the light source units 50 and 60, so that the appearance is improved.

  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 so as to overlap each other in the plate thickness direction TD. For example, when the light source unit 50 or 60 to be turned on is switched to another light source unit 60 or 50, the brightness balance on the light guide plates 30 and 40 changes before and after the light source unit 50 or 60 and it is difficult to visually recognize the light source unit 50 or 60. , Looks better.

  Further, according to the present embodiment, the concave and convex portions 37 and 47 projecting from the back side of the light guide plates 30 and 40 to the inside of the light guide plates 30 and 40 form a design. The reflection portions 36 and 46 can easily reflect the light from the light source toward the viewing side by the uneven portions 37 and 47.

  Further, according to the present embodiment, since the symbols are different from each other in the light guide plates 30 and 40, different symbols can be visually recognized by switching the light source units 50 and 60 to be lit, and the appearance is improved.

  Further, according to the present embodiment, in one light guide plate 30, the peripheral reflection portion 36a is provided in a region corresponding to the peripheral region SA of the display unit 20, and in another light guide plate 40, the display overlapping reflection portion 46a The light source light provided in the area corresponding to the area DA and reflected on the viewing side is superimposed on the display of the display unit 20. The appearance is enhanced by designing the peripheral reflection portion 36a and the display overlap reflection portion 46a in accordance with such an area arrangement of the display unit 20.

(Other embodiments)
As described above, one embodiment of the present invention has been described. However, the present invention is not construed as being limited to the embodiment, and may 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 used. Specifically, in the examples 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 similarly to the first embodiment.

  Here, as shown in FIG. 12, two light guide plate light sources 250 and 260 are provided for one light guide plate 230. Each of the light source units 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 They emit light in different colors. The light emitting elements 252 and 262 belonging to the different light source units 250 and 260 are arranged so as to overlap each other in the plate thickness direction TD. By arranging the light emitting elements 252 and 262 in two rows for each of the light source sections 250 and 260 in this manner, the light emitting elements 252 and 262 belong to the same light source section 250 or 260 as compared with the case where the light emitting elements 252 and 262 are alternately arranged in one row. The arrangement pitch between the light emitting elements 252 or 262 can be reduced. By reducing the arrangement pitch between the light-emitting elements 252 or 262, it is possible to reduce the uneven brightness of the light source light reflected by the reflector 236.

  Each of the outer edge members 270 is disposed between the outer edge 232 of the flat light guide plate 230 and each of the light emitting elements 252 and 262, as shown in FIGS. Each outer edge member 270 integrally has an outer edge light guide portion 272 and a light shielding portion 276 by two-color molding. The outer edge light guide 272 is formed of, for example, a synthetic resin having a light transmitting property so as to be able to guide the light of the light source. 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 plate thickness direction TD. It has a Y-shaped cross section provided with a branch connecting the opposing surfaces 273a and 273b. The light source facing surfaces 273a and 273b and the plate facing surface 274 are each formed in a smooth planar shape.

  The outer edge light guide 272 causes the light from the light sources 250 and 260 to enter the light source facing surfaces 273a and 273b and exit from the plate facing surface 274.

  The light-shielding portion 276 is formed of, for example, an elastomer having a light-shielding property, and has a cylindrical shape surrounding a portion of the outer edge light guide portion 272 except for the facing surfaces 273a, 273b, and 274. Accordingly, when the light source light emitted from the light emitting elements 252 and 262 is guided by the outer edge light guide unit 272, it is less likely to leak outside the light shielding unit 276. The light shielding portion 276 extends toward the light guide plate 230 from the plate facing surface 274.

  The outer edge member 270 is held between the rear case 12 and the window plate 14 and held. Further, the outer edge member 270 holds the light guide plate 230 by sandwiching the light guide plate 230 at the light guide plate 230 end of the light blocking unit 276.

  In such a vehicle display device 200, the light source units 250 and 260 that are turned on can be switched so that one of the two light source units 250 and 260 is turned on. Thus, the color visually recognized by the reflection unit 236 can be switched to be visually recognized by a different color (for example, red or blue) corresponding to each of the light source units 250 and 260. Note that the two light source units 250 and 260 may be provided so that both can be turned on at the same time.

  As a modified example 2, three or more light guide plates 30 and 40 may be provided.

  As a third modification, the reflecting portions 36 and 46 in each of the light guide plates 30 and 40 may be arranged in regions where the entire region overlaps each other. Therefore, the pattern formed by the uneven portions 37 and 47 may be the same in each of the light guide plates 30 and 40.

  As Modification Example 4, any of various designs can be adopted as the design formed by the uneven portions 37 and 47.

  As a modification 5, the inclined reflecting surfaces 37a and 47a in the concave and convex portions 37 and 47 may be formed in a curved shape.

  As a sixth modification, the light emitting elements 52 and 62 belonging to the 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, for example.

  REFERENCE SIGNS LIST 100 vehicle display device, 20 display unit, 30, 40 light guide plate, 32, 42 outer edge, 36, 46 reflecting unit, 50, 60 light source unit

Claims (6)

A vehicle display device comprising a display unit (20) for displaying a state of a vehicle,
A case part (10);
A plurality of light guide plates (30, 40) which are formed in a plate shape having a light transmitting property and are arranged so as to overlap with each other on the viewing side relative to the display unit;
A plurality of light guide plates are individually paired with each other, and are provided so as to be switchable between ON and OFF, and light source light is incident inside through the corresponding outer edges (32, 42) of the light guide plates. Light source units (50, 60);
A plurality of cylindrical holes individually corresponding to each pair of the light source portion and the outer edge portion, the holes having openings corresponding to the light source portion side and the outer edge portion side. A light source light partitioning section (76) for partitioning into
Each of the light source units emits light sources of different colors,
Each of the light guide plates has a reflector (36, 46) for reflecting light from the corresponding light source to the viewing side,
The case portion has a light-shielding window plate (14) which is open on the viewing side and the back side, and is formed in a cylindrical shape along the outer peripheral contour of the display portion.
The light source light dividing portion disposed on the back surface of the wind plate is integrally formed with a convex lens-shaped light guiding portion (72a, 72b) disposed inside each of the cylindrical holes. apparatus.   The vehicle display device according to claim 1, wherein each of the reflection portions in each of the light guide plates is arranged in a region where at least a part thereof is shifted from each other. Each of the light source units has a plurality of light emitting elements (52, 62) that emit the light of the light source,
Each of the light guide plates is arranged in a plate thickness direction (TD), and
The vehicle display device according to claim 1, wherein the light-emitting elements belonging to the different light source units are arranged so as to overlap each other in the thickness direction.   The said reflection part in each said light-guide plate has the uneven | corrugated 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 has a display area (DA) for displaying on the viewing side, and a peripheral area (SA) surrounding the display area,
The reflecting portion (36) of at least one of the light guide plates (30) among the plurality of light guide plates is a peripheral reflection portion (36a) provided in a region corresponding to the peripheral region,
The reflecting portion (46) of at least one of the light guide plates (40) different from the light guide plate provided with the peripheral reflection portion is provided in a region corresponding to the display region. The display device for a vehicle according to any one of claims 1 to 5, wherein the display device is a display overlapping reflector (46a) configured to superimpose the light source light reflected toward the viewing side on a display of the display unit.

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