JP5971179B2 - Vehicle display device - Google Patents

Description

  The present invention relates to a vehicle display device that displays vehicle information.

  2. Description of the Related Art Conventionally, a vehicular display device in which a decorative member for decorating a display area from the outer peripheral side is provided in front of a display board that displays vehicle information in the display area has been widely used.

  In such a vehicle display device disclosed in Patent Document 1, a translucent decorative member that emits light by being illuminated by light from a light source guided from the inner peripheral side is provided in an annular shape along a display region. The decoration according to the light emission luminance or the light emission color of the decorative member is possible. On the other hand, in the device disclosed in Patent Document 2 as a display device for a vehicle, an illumination area that is illuminated by light source light and is emitted is provided along an annular decorative member, and the light emission luminance or emission color of the illumination area is determined. Decoration is possible.

JP 2007-64682 A JP 2012-144146 A

  Now, the present inventors have conducted intensive research on a technique for reducing the number of parts by providing an illumination area as disclosed in Patent Document 2 on a translucent decorative member as disclosed in Patent Document 1. It was. In such a decoration member, the light source light that illuminates the annular decoration area provided along the display area from the inner peripheral side leaks to the illumination area along the annular decoration area, thereby illuminating the illumination area from behind. It interferes with the light source light. As a result, depending on the brightness of the light source light that reaches the illumination area from the rear, light emission due to light leakage from the inner peripheral side is dominant for light emission in the illumination area, thereby achieving the desired decoration in the illumination area. There was concern that it would not be obtained.

  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 that achieves desired decoration with a decorative member on the outer peripheral side of the display region.

  The present invention provides a display board (10) for displaying vehicle information in the display area (12), and a translucent light that is provided in front of the display board and decorates the display area from the outer periphery side by receiving light and emitting light. The decorative member (70) and a control means (80) for controlling the illumination state of the decorative member are provided. The decorative member is provided in a ring shape along the display area, and is illuminated by the first light source light (L1). Annular decoration area (72), and provided along the annular decoration area, can be illuminated by the first light source light guided from the annular decoration area, and can be illuminated by the second light source light (L2) guided from the rear And the control means sets the brightness of the second light source light reaching the illumination area to be higher than the brightness of the first light source light reaching the illumination area. .

  In the translucent decorative member according to the present invention, the first light source light that illuminates the annular decoration area provided along the display area illuminates the illumination area along the annular decoration area by light guide from the annular decoration area. . Therefore, the first light source light interferes with the second light source light that illuminates the illumination area by guiding light from behind. However, according to the control means of the present invention for controlling the illumination state of the decoration member, the luminance of the second light source light reaching the illumination area from the rear is higher than the luminance of the first light source light reaching the illumination area from the annular decoration area. Since it is set high, light emission by the second light source light is dominant for light emission in the illumination area. According to this, it is possible to individually control the illumination states of the annular decoration area and the illumination area with the first light source light and the second light source light, and achieve the desired decoration by the respective illuminations. .

  Here, as a further feature of the present invention, the control means is a composite illumination mode (Mc) that generates the second light source light together with the first light source light, and illuminates the luminance of the second light source light reaching the illumination region. Switching control is performed between a composite illumination mode that is set higher than the luminance of the first light source light reaching the region and a single illumination mode (Ms) that generates the first light source light alone.

  According to this feature, in the composite illumination mode that generates the second light source light together with the first light source light, the brightness of the second light source light that reaches the illumination area from the rear is the first light source light that reaches the illumination area from the annular decoration area. It is set higher than the brightness of. Therefore, in the composite illumination mode, it is possible to achieve the desired decoration by controlling each illumination state of the annular decoration area and the illumination area with the individual first light source light and the second light source light. On the other hand, in the single illumination mode in which the first light source light is generated alone, not only the annular decoration area is directly illuminated by the first light source light but also illumination by the first light source light guided from the annular decoration area. The area will be indirectly illuminated. Therefore, in the single illumination mode, each illumination state of the annular decoration area and the illumination area is controlled by the common first light source light, so that it is possible to achieve the desired decoration different in appearance from the composite illumination mode.

  Further, as a further feature of the present invention, the decorative member is provided at an edge (700) of the decorative member that sandwiches the illumination region between the annular decorative region, and the first light source light incident from the annular decorative region through the illumination region is used. It further has an edge light region (76) that is illuminated and reflects the first light source light forward.

  According to such a feature, the edge light region is illuminated by the first light source light incident from the annular decoration region through the illumination region at the edge of the decorative member that sandwiches the illumination region between the annular decoration region, so that the first One light source light is reflected forward. According to this, even in the illumination by the first light source light whose luminance is attenuated by the light guide through the annular decoration region, it is possible to enhance the decoration by making the light emission in the edge light region stand out.

It is a front view which shows the display apparatus for vehicles by one Embodiment of this invention. It is the II-II sectional view taken on the line of FIG. It is an enlarged view of the principal part in FIG. It is a schematic diagram for demonstrating the composite illumination mode of the display apparatus for vehicles of FIG. It is a schematic diagram for demonstrating the single illumination mode of the display apparatus for vehicles of FIG. It is a front view which shows the modification of FIG.

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

  As shown in FIGS. 1 and 2, a vehicle display device 1 (hereinafter simply referred to as “device 1”) according to an embodiment of the present invention is a combination meter installed on an instrument panel in the vehicle. The apparatus 1 includes a display board 10, a circuit board 20, a first light source 30, a light guide member 40, a second light source 50, a light shielding member 60, a decoration member 70, and a control circuit 80. Note that “front” in the device 1 indicates the direction in which vehicle information is displayed to the passenger on the seat in the vehicle cabin, that is, the side viewed by the passenger. On the other hand, “rear” in the vehicular display device 1 indicates a direction opposite to the direction displayed to the passenger on the seat.

  As shown in FIGS. 1-3, the display board 10 is formed in flat form by laminating | stacking a light-shielding printing layer etc. on the translucent resin substrate which consists of polycarbonate resin etc. As shown in FIG. The display board 10 has a circular display region 12 and a peripheral region 14 surrounding the region 12 from the outer peripheral side. In the display area 12, scales, characters, and the like that can transmit light from the rear to the front are formed as a plurality of indicators 16 side by side in the circumferential direction. In the display area 12, vehicle information is displayed by the pointer 18 rotating in front of the display area 12 indicating the index 16 corresponding to the rotational position. The vehicle information displayed in the present embodiment is the traveling speed of the vehicle, but may of course be various information related to the vehicle such as the engine speed, water temperature, and remaining fuel amount of the vehicle.

  As shown in FIGS. 2 and 3, in the peripheral region 14, a bank-shaped bank portion 142 that protrudes forward from the display region 12 and secures a light guide space 140 behind the display region 12 is arranged in the circumferential direction of the outer peripheral edge of the display region 12. It is formed in an annular shape along the entire area. A first transmission portion 144 that can transmit light from the inner peripheral side to the outer peripheral side and transmit light from the rear to the front is formed in the entire circumferential direction of the bank portion 142. Moreover, the 2nd permeation | transmission part 146 which can permeate | transmit light from the back to the front is formed in two places spaced apart in the circumferential direction in the outer peripheral side of the bank part 142 among the peripheral areas 14. FIG.

  As shown in FIG. 2, the circuit board 20 is a printed board such as a glass epoxy board formed in a flat plate shape, and is arranged behind the display board 10.

  As shown in FIGS. 1 and 2, the first light source 30 made of a light emitting diode (LED) or the like is mounted on the circuit board 20 behind the display area 12. The first light sources 30 are arranged one by one at a plurality of locations at predetermined intervals along the circumferential direction of the display area 12. The first light source 30 is turned on by energization and emits light in a predetermined color, and in this embodiment, emits light in the same blue color.

  As shown in FIG. 2, the light guide member 40 is formed in a circular horseshoe shape from a translucent resin such as an acrylic resin or a polycarbonate resin, and is located behind the bank portion 142 and behind the display region 12 in the peripheral region 14. It is arranged across. The inner peripheral edge 42 of the light guide member 40 faces the plurality of first light sources 30 by protruding rearward. The outer peripheral edge portion 44 of the light guide member 40 is opposed to the outer peripheral first transmission portion 144 by entering the front light guide space 140. 4 and 5, the light guide member 40 guides the first light source light L1 as the light emitted from each first light source 30 to the outer peripheral edge 44 by internal reflection. Then, the light is incident on the first transmission part 144. Thus, the first light source light L1 from each first light source 30 incident on the first transmission part 144 is transmitted through the transmission part 144 and guided from the inner peripheral side to the outer peripheral side of the bank part 142 and from the rear to the front. Is done. In addition, the light guide member 40 transmits the first light source light L1 to each index 16 facing in front of the intermediate portion between the edge portions 42 and 44 (not shown), thereby causing the indexes 16 to emit light. .

  As shown in FIGS. 1 to 3, the second light source 50 made of a light emitting diode (LED) or the like is mounted on the circuit board 20 behind the second transmission part 146 in the peripheral region 14. A plurality of second light sources 50 are arranged, for example, in a chip shape in two places at predetermined intervals in the circumferential direction of the peripheral region 14. The plurality of second light sources 50 are turned on by energization to emit light in a predetermined color, and in this embodiment, light is emitted in red, blue, and green, which are different from each other at each location. As shown in FIG. 4, the second light source light L <b> 2 as the light emitted from each of the second light sources 50 is incident on the second transmission part 146, and is transmitted through the transmission part 146 and behind the peripheral region 14. From the front to the front.

  As shown in FIGS. 2 and 3, the light shielding member 60 is formed in a substantially triangular cylinder shape from an opaque resin such as an ABS resin, and the periphery of the second light source 50 at each location between the peripheral region 14 and the circuit board 20. Surrounding each. The light shielding member 60 extends from the peripheral region 14 to the circuit board 20, thereby restricting the second light source light L <b> 2 from leaking from each second light source 50 to the light guide member 40 side.

  As shown in FIGS. 2, 4, and 5, the decorative member 70 is made of a translucent resin such as an acrylic resin or a polycarbonate resin, and is disposed in front of the peripheral region 14. The decoration member 70 decorates the display area 12 from the outer peripheral side by receiving light from the light source lights L1 and L2 and emitting light. The decorative member 70 integrally includes an annular decorative region 72, an illumination region 74, and an edge light region 76.

  As shown in FIGS. 1 to 3, the annular decorative region 72 is formed in a cross-sectional mountain shape protruding forward from the other regions 74 and 76 of the same decorative member 70, and extends in an annular shape along the entire circumferential direction of the display region 12. doing. The annular decorative region 72 covers the entire circumferential direction of the first transmission portion 144 in the peripheral region 14 so as not to be directly visible from the front. The ring-shaped decorative region 72 in the cover form is illuminated as shown in FIGS. 4 and 5 by the first light source light L1 guided from the first transmitting portion 144 on the inner peripheral side.

  As shown in FIGS. 1 to 3, the illumination areas 74 are formed at two positions spaced in the circumferential direction on the outer peripheral side of the annular decoration area 72. Each illumination area 74 spreading in a substantially flat plate shape along a part in the circumferential direction of the annular decorative area 72 is illuminated as shown in FIGS. 4 and 5 by the first light source light L1 guided from the annular decorative area 72 on the inner peripheral side. Is done. At the same time, each illumination region 74 that covers the corresponding portion of the peripheral region 14 where the corresponding second transmission part 146 is formed is visible from the front by the second light source light L2 guided from the corresponding transmission part 146. Illuminated like 4

  As shown in FIGS. 2 and 3, the illumination region 74 has a groove portion 75 having a V-shaped cross section on the rear rear surface of the decorative member 70. In addition, in FIG. 3 which is the front view which looked at the illumination area | region 74 from the front, in order to understand easily, the outline of the back groove part 75 seen through through the translucent material of the illumination area | region 74 is made into the continuous line. This is shown schematically. About the groove part 75 of this embodiment, the multiple item | stripes are formed side by side toward the edge light area | region 76 side explained in full detail from the cyclic | annular decoration area | region 72 side later. Each groove 75 has an inner surface 750 that inclines toward the annular decorative region 72 as it goes from the front to the rear, and an inner surface 752 that inclines toward the opposite side to the annular decorative region 72 as it goes from the front to the rear. Each groove 75 reflects the first light source light L1 reaching the inner surface 750 from the annular decoration region 72 side in the illumination region 74 toward the front by the inner surface 750 as shown in FIGS. Moreover, each groove part 75 permeate | transmits the 2nd light source light L2 light-guided from the back 2nd permeation | transmission part 146 and injecting into inner surface 750,752 toward the front like FIG.

  As shown in FIGS. 1 to 3, the edge light regions 76 are formed at two locations in the edge 700 of the decorative member 70 that sandwich each illumination region 74 between the annular decorative region 72. As shown in FIGS. 1 and 2, the edge light region 76 has a reflection surface 760 that is inclined toward the nearest illumination region 74 as it goes from the front to the rear. In FIG. 3, which is a front view of the edge light region 76 viewed from the front, the outline that can be seen through the light-transmitting material of the edge light region 76 is schematically shown by a solid line in order to facilitate understanding of the description. It shows. As shown in FIGS. 4 and 5, the edge light region 76 is illuminated by the first light source light L1 that reaches the reflection surface 760 from the annular decoration region 72 through the illumination region 74. At this time, the reflection surface 760 is reflected by the first light source. The light L1 is reflected forward. In the present embodiment, the inner surfaces 750 and 752 of the respective groove portions 75 are suppressed so as to suppress the phenomenon that the second light source light L2 is reflected by the respective groove portions 75 toward the edge light region 76 and further reflected by the reflecting surface 760. Are set.

  A control circuit 80 as “control means” shown in FIG. 2 is an electronic circuit composed of a microcomputer or the like, and is mounted on the circuit board 20. The control circuit 80 is electrically connected to the light sources 30 and 50 and various sensors of the vehicle, and controls energization of the light sources 30 and 50 based on the vehicle information detected by the sensors. The control circuit 80 generates blue first light source light L1 by energization control to each first light source 30, while occupant among red, blue, and green by energization control to each second light source 50. The second light source light L2 is generated in a color corresponding to a change in vehicle information (for example, fuel consumption information) to be notified. Therefore, according to the control circuit 80, the hue of the first light source light L1 is fixedly controlled without depending on the vehicle information, while the hue of the second light source light L2 is variably controlled according to the vehicle information, thereby The illumination state of each region 72, 74, 76 can be controlled. The vehicle information for variably controlling the hue of the second light source light L2 is input from an occupant to an input device such as a switch in the vehicle in addition to the information detected by various sensors of the vehicle as described above. Also good.

  The control circuit 80 of the present embodiment includes a composite illumination mode Mc that generates the second light source light L2 together with the first light source light L1 as shown in FIG. 4, and a single illumination mode that generates the first light source light L1 alone as shown in FIG. Ms is controlled to be switched according to the vehicle information. Specifically, in the composite illumination mode Mc of FIG. 4, the control circuit 80 determines the brightness of the second light source light L2 reaching each illumination area 74 as the brightness of the first light source light L1 reaching each same illumination area 74. Set higher than. Here, in the present embodiment, the first light source light L1 reaches the region 74 via the elements 40, 144, 72 sequentially, while the second light source light L2 reaches the regions 74 only via the element 146. For example, such setting can be realized by making the light emission luminances of the light source lights L1 and L2 substantially the same. On the other hand, in the single illumination mode Ms of FIG. 5, the control circuit 80 sets the luminance of the first light source light L1 reaching each illumination region 74 to zero as the luminance of the second light source light L2 reaching each illumination region 74. It is set to substantially the same luminance as the composite illumination mode Mc.

(Function and effect)
The effects of the apparatus 1 described above will be described below.

  In the translucent decorative member 70 in the apparatus 1, the first light source light L <b> 1 that illuminates the annular decorative region 72 provided along the display region 12 passes through the illumination region 74 along the annular decorative region 72 from the region 72. Illuminate by light guide. Therefore, the first light source light L1 interferes with the second light source light L2 that illuminates the illumination area 74 by light guide from behind. However, according to the control circuit 80 that controls the illumination state of the decoration member 70, the luminance of the second light source light L2 reaching the illumination area 74 from the rear is the first light source light L1 reaching the illumination area 74 from the annular decoration area 72. It is set higher than the brightness of. Thereby, about the light emission in the illumination area | region 74, the light emission by the 2nd light source light L2 becomes dominant. According to this, each illumination state of the annular decoration area 72 and the illumination area 74 is individually controlled by the first light source light L1 and the second light source light L2 to achieve the desired decoration by each illumination. Is possible.

  Further, in the composite illumination mode Mc that generates the second light source light L2 together with the first light source light L1, the luminance of the second light source light L2 that reaches the illumination area 74 from the rear reaches the illumination area 74 from the annular decoration area 72. It is set higher than the luminance of the first light source light L1. Therefore, in the composite illumination mode Mc, the desired decoration can be achieved by controlling the illumination states of the annular decoration region 72 and the illumination region 74 with the individual first light source light L1 and the second light source light L2. On the other hand, in the single illumination mode Ms in which the first light source light L1 is independently generated, not only the annular decoration area 72 is directly illuminated by the first light source light L1, but also the first light guided from the annular decoration area 72. The illumination area 74 is indirectly illuminated by the single light source light L1. Therefore, in the single illumination mode Ms, the respective illumination states of the annular decoration region 72 and the illumination region 74 are controlled by the common first light source light L1, thereby achieving the desired decoration different in appearance from the composite illumination mode Mc. It becomes possible.

  Further, at the edge portion 700 of the decoration member 70 sandwiching the illumination area 74 between the annular decoration area 72, the edge light area 76 is illuminated by the first light source light L1 incident from the annular decoration area 72 through the illumination area 74. Thus, the light source light L1 is reflected forward. According to this, even in the illumination by the first light source light L1 whose luminance is attenuated by the light guiding through the annular decoration region 72, it is possible to make the light emission in the edge light region 76 stand out and enhance the decoration.

  In addition, while the hue of the first light source light L1 that controls light emission in the annular decoration region 72 and the edge light region 76 is fixedly controlled, the second light source that controls light emission in the illumination region 74 between the regions 72 and 76 is controlled. By variably controlling the hue of the light source light L2, the degree of gaze on the region 74 can be increased. Here, since the variable control for the hue of the second light source light L2 can provide information according to the vehicle information, the illumination area 74 can be provided not only with decorativeness but also with information provision.

  Further, according to the groove portion 75 having a V-shaped cross section provided on the rear rear surface of the decorative member 70 in the illumination region 74, the first light source light L1 guided from the annular decorative region 72 is reflected forward in the composite illumination mode Mc. At the same time, the second light source light L2 guided from the rear can be transmitted forward. According to this, while the illumination state of the entire illumination area 74 is controlled by the second light source light L <b> 2 having a high reached brightness, the inner surface of the groove 75 is locally within the area 74 by the first light source light L <b> 1 having a low reach brightness. It is possible to enhance the decorativeness by emitting light automatically.

(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, in Modification 1, as shown in FIG. 6, the annular decorative region 72 may be formed in a partial annular shape (arc shape) along a part of the display region 12 in the circumferential direction. In the second modification, the edge light region 76 may not be formed.

  In the third modification, one of the inner surfaces 750 and 752 of each groove portion 75 in the illumination region 74 may be formed in a planar shape that extends straight forward and backward without being inclined. Alternatively, in Modification 4, only one groove 75 may be formed in the illumination area 74. Alternatively, in the fifth modification, the groove 75 may not be formed in the illumination area 74.

  In the sixth modification, only the combined illumination mode Mc that generates both the first light source light L1 and the second light source light L2 may be executed without executing the single illumination mode Ms that independently generates the first light source light L1. Alternatively, in the modified example 7, instead of the single illumination mode Ms for generating the first light source light L1 alone, the single illumination mode Ms for generating the second light source light L2 alone may be executed.

  In the modification 8, the hue of the first light source light L1 may be variably controlled according to the vehicle information. In the modification 9, the hue of the second light source light L2 may be fixedly controlled regardless of the vehicle information.

DESCRIPTION OF SYMBOLS 1 Display apparatus for vehicles, 10 Display board, 12 Display area, 14 Decoration area, 30 1st light source, 50 2nd light source, 70 Decoration member, 72 Annular decoration area, 74 Illumination area, 75 Groove part, 76 Edge light area, 80 Control circuit, 700 edge, L1 first light source light, L2 second light source light, Mc composite illumination mode, Ms single illumination mode

Claims (5)

A display board (10) for displaying vehicle information in the display area (12);
A translucent decorative member (70) provided in front of the display board and decorating the display area from the outer peripheral side by receiving light and emitting light;
Control means (80) for controlling the illumination state of the decorative member,
The decorative member is
An annular decorative region (72) provided in an annular shape along the display region and illuminated by the first light source light (L1);
An illumination area (74) provided along the annular decoration area, capable of being illuminated by the first light source light guided from the annular decoration area, and illuminated by the second light source light (L2) guided from the rear. )
The control means includes
The vehicular display device, wherein the brightness of the second light source light reaching the illumination area is set higher than the brightness of the first light source light reaching the illumination area. The control means includes
In the combined illumination mode (Mc) for generating the second light source light together with the first light source light, the luminance of the second light source light reaching the illumination area is set to the first light source light reaching the illumination area. Combined lighting mode to set higher than the brightness of
The vehicle display device according to claim 1, wherein switching control is performed between a single illumination mode (Ms) in which the first light source light is independently generated. The decorative member is
Provided at an edge (700) sandwiching the illumination area with the annular decoration area, illuminated by the first light source light incident through the illumination area from the annular decoration area, and forward the first light source light The vehicle display device according to claim 1, further comprising an edge light region (76) that reflects toward the vehicle.   4. The control unit according to claim 1, wherein the control unit fixedly controls the hue of the first light source light, and variably controls the hue of the second light source light according to vehicle information. The vehicle display device described. The illumination area is
A groove portion (75) having a V-shaped cross section provided on the rear rear surface of the decorative member, wherein the first light source light guided from the annular decorative region is reflected forward and guided from the rear. The vehicular display device according to any one of claims 1 to 4, further comprising a groove that transmits the two light source light toward the front.

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