JP2019036399A - Vehicle display device - Google Patents

Abstract

To provide a vehicle display device which can inhibit deterioration of visibility when display is performed by using external light while protecting a display part.SOLUTION: A marker lamp 1 which is an example of a vehicle display device includes: a reflection type display 20 which reflects light made incident into a display part 21 and emits the light from the display part 21 to perform display; a frame body 11 which encloses a periphery of the display part 21, extends to an exterior part of a vehicle VE, and is formed with an opening 11H through which the display part 21 can be viewed from the exterior part of the vehicle VE; and reflection members 40, 41 serving as optical members. The reflection members 40, 41 are disposed in the periphery of the display part 21 of an internal space 14, enclosed by the frame body 11, of the housing 10 when the display part 21 is viewed from the front side through the opening 11H and guides light made incident into the reflection members 40, 41 to the display part 21.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a display device for a vehicle, and more particularly to a display device that performs display toward the outside of a vehicle.

  Known display devices for displaying the state of the vehicle to people outside the vehicle, such as passers-by and other vehicle passengers, are known as indicator lights such as rear combination lamps, and display devices that are attached to the outer surface of the vehicle to display messages. . For example, Patent Literature 1 includes a display and a protective rim that surrounds the display portion of the display and extends from the exterior of the vehicle toward the outside of the vehicle, and displays a message to a person outside the vehicle. A display device is disclosed. In Patent Document 1, the display portion of the display is protected by the protective rim.

  As a display, a reflection type display that performs display by reflecting and emitting light incident on a display unit of the display is known. Such a reflective display can perform display using natural light such as sunlight or outside light such as street light. Patent Document 2 discloses a reflective display including a light source. In a reflective display including a light source as in Patent Document 2, it is possible to suppress a decrease in visibility when external light incident on the display unit of the reflective display is strong.

Special table 2007-531904 gazette Japanese Patent Application Laid-Open No. 7-318928

  Here, it is conceivable to combine a reflective display as in Patent Document 2 and a vehicle display device as in Patent Document 1. In this case, the display unit of the reflective display is surrounded by a protective rim extending from the exterior of the vehicle toward the outside of the vehicle. For this reason, a part of external light which goes to the display part of a reflection type display may be interrupted | blocked by the protective rim. Accordingly, the amount of external light incident on the display unit of the reflective display may not be sufficiently obtained, and the brightness of the light emitted from the display unit is reduced, so that display using external light is performed. There is a concern that the visibility of the vehicular display device is lowered.

  Therefore, the present invention intends to provide a display device for a vehicle that can suppress a decrease in visibility when displaying using external light while protecting the display unit.

  To achieve the above object, a vehicle display device according to the present invention includes a reflective display that displays light by reflecting light incident on a display unit and emitting the light from the display unit, and a vehicle that surrounds the display unit. An optical member, and an optical member, wherein the optical member is formed in an internal space surrounded by the frame body. Among these, the display unit is arranged around the display unit when viewed from the opening, and guides light incident on the optical member to the display unit.

  According to the vehicle display device of the present invention, since the display unit can be viewed from the outside of the vehicle through the opening of the frame body, an optical path extending from the outside of the vehicle to the display unit is formed. Light from a light source located outside can enter the display unit. For this reason, the reflective display can display using external light. Moreover, since the frame surrounds the periphery of the display unit, the display unit is protected by the frame. The optical member is disposed around the display unit when the display unit is viewed from the opening in the internal space surrounded by the frame, and guides light incident on the optical member to the display unit. For this reason, even if the external light is blocked by the frame and the amount of the external light incident on the display unit is reduced, the external light is guided to the display unit by the optical member and is incident on the display unit. It can suppress that the quantity of is reduced. Therefore, it can be set as the vehicle display apparatus which can suppress the fall of the brightness | luminance of the light radiate | emitted from a display part, and can suppress the fall of the visibility at the time of performing display using external light.

  The reflective display may be tilted with respect to the vertical direction.

  In this case, it is preferable that the reflective display is tilted so that the display unit is directed downward, and the optical member is disposed below the display unit.

  During the day, the vehicle display device is irradiated with sunlight, which is strong light, from above. For this reason, the reflective display is tilted so that the display unit faces downward, so that the amount of sunlight reflected off the display surface of the display unit and emitted to the outside of the vehicle through the opening of the frame body is reduced. . For this reason, it is suppressed that the brightness | luminance of the light which goes outside a vehicle from a display part becomes higher than a predetermined value. Therefore, it is possible to suppress glare, which is a phenomenon in which light emitted from the display unit is too bright and the vehicle display device becomes difficult to visually recognize. Moreover, although the amount of sunlight directly incident on the display unit is reduced, a part of sunlight can be guided to the display unit by the optical member as described above. For this reason, it can be set as the display apparatus for vehicles which can suppress the fall of the brightness | luminance of the light radiate | emitted from a display part, and can suppress the fall of the visibility at the time of performing display using external light.

  The optical member may be a reflecting member that reflects light incident on the optical member and guides the light to the display unit.

  The optical member may be a light guide member that emits light incident on the optical member from a surface different from the incident surface and guides the light to the display unit.

  The optical member may be guided to the display unit by diffusing and emitting light incident on the optical member.

  With such a configuration, the optical member can disperse light and guide it to the display unit, and unevenness in luminance of light emitted from the display unit is less likely to occur, and when performing display using external light. The visibility of the vehicle display device can be improved.

  As described above, according to the present invention, it is possible to provide a vehicle display device that can suppress a decrease in visibility when display is performed using external light.

It is a figure which shows an example of the display apparatus for vehicles in 1st Embodiment of this invention. It is a figure which shows roughly the vertical cross section of a marker lamp. It is a figure which shows roughly the cross section of the thickness direction of a part of display part. It is a figure which shows the example of the optical path of the external light which injects into a display part from the same viewpoint as FIG. It is a figure which shows the display apparatus for vehicles in 2nd Embodiment of this invention from the same viewpoint as FIG. It is a figure which shows the principal part of the display apparatus for vehicles in 3rd Embodiment of this invention from the same viewpoint as FIG. It is a front view which shows the principal part of the display apparatus for vehicles in 3rd Embodiment of this invention. It is a figure which shows roughly the cross section of the thickness direction of a part of display part concerning a modification.

  EMBODIMENT OF THE INVENTION Hereinafter, the form for implementing the display apparatus for vehicles which concerns on this invention is illustrated with an accompanying drawing. The embodiments exemplified below are intended to facilitate understanding of the present invention, and are not intended to limit the present invention. The present invention can be modified and improved from the following embodiments without departing from the spirit of the present invention.

(First embodiment)
FIG. 1 is a diagram illustrating an example of a vehicle display device according to the present embodiment. FIG. 1 is a view of the vehicle VE as viewed from the rear side. As shown in FIG. 1, the vehicle display device of the present embodiment is a marker lamp 1. One marker lamp 1 of the present embodiment is provided in each of the left and right directions on the back surface of the vehicle VE. Each marker lamp 1 is exposed to the outside of the vehicle VE and emits light toward the outside of the vehicle VE.

  FIG. 2 is a diagram schematically showing a vertical section of the marker lamp 1 in the present embodiment. As shown in FIG. 2, the marker lamp 1 of the present embodiment includes a housing 10, a reflective display 20, and two reflecting members 40 and 41 as optical members as main components.

  The housing 10 includes a frame body 11, a bottom plate 12, and a cover 13. The frame 11 is a cylindrical member that extends in a substantially horizontal direction toward the outside of the vehicle VE. The bottom plate 12 is connected to the entire circumference of the inner edge of the vehicle VE in the frame 11. The cover 13 is attached to the frame body 11 so as to close the opening 11H at the end of the frame body 11 outside the vehicle VE. The cover 13 is made of a colorless and translucent material. In the housing 10 having such a configuration, an internal space 14 surrounded by the frame body 11, the bottom plate 12, and the cover 13 is formed. The housing 10 is fitted into an opening 50H formed in the outer plate 50 that is a part of the exterior of the vehicle VE, and is fixed to the outer plate 50 by means (not shown).

  The reflective display 20 of the present embodiment includes a display unit 21, an edge cover 22 that covers the periphery and back side of the display unit 21, and a control unit (not shown) as main components. The reflective display 20 is covered with the frame body 11 and arranged in the internal space 14 of the housing 10 so that the display unit 21 can be visually recognized from the outside of the vehicle VE through the cover 13 and the opening 11H of the frame body 11. Is done. By arranging the reflective display 20 in this way, an optical path extending from the display unit 21 of the reflective display 20 through the cover 13 to the outside of the vehicle is formed in the marker lamp 1. Therefore, the light emitted from the display unit 21 can pass through the cover 13 and be emitted to the outside of the vehicle VE. In addition, external light that is light from a light source located outside the vehicle VE, such as the sun, a street light, or a headlight of a following vehicle, can enter the display unit 21.

  The reflective display 20 of the present embodiment is a display that performs display by reflecting light incident from the display surface 21S of the display unit 21 and emitting it from the display surface 21S. In the display unit 21 of the reflective display 20, each region divided into a plurality of regions is individually lit. Specifically, the display unit 21 is divided into a stop lamp area 23, a turn lamp area 24, and a back lamp area 25 in order from the top. The stop lamp area 23 is lit red, the turn lamp area 24 is lit orange, and the back lamp area 25 is lit white. The stop lamp area 23 is lit when the brake of the vehicle VE is operated, the turn lamp area 24 flashes when the direction indicator of the vehicle VE is operated, and the back lamp area 25 is in the back gear of the vehicle VE. Lights when placed in.

  FIG. 3 is a diagram schematically showing a cross section in the thickness direction of a part of the display unit 21. As shown in FIG. 3, the display unit 21 in the reflective display 20 of the present embodiment includes a light source 30, a drive circuit layer 31, a reflective electrode 32, a liquid crystal layer 33, a transparent electrode 34, and a color filter 35 as main components. .

  The light source 30 of the present embodiment is a backlight provided on the back side of the display unit 21 opposite to the display surface 21S. The light source 30 may emit light directly toward the display surface 21S, or may emit light toward the display surface 21S via a light guide plate or the like. Further, the light source 30 can irradiate light to each of the stop lamp region 23, the turn lamp region 24, and the back lamp region 25 independently, and each region can be composed of a single light source. It may consist of a plurality of light sources arranged in an array. As such a light source 30, an organic electroluminescence (OLED) and a light emitting diode (LED) are used, for example.

  The drive circuit layer 31 is a layer in which a circuit connected to the reflective electrode 32 is disposed. The reflective electrode 32 and the transparent electrode 34 are electrodes arranged so as to sandwich the liquid crystal layer 33. A plurality of the reflective electrodes 32 of the present embodiment are provided at intervals. As shown in FIG. 3, at least part of the light L1 emitted from the light source 30 is emitted from the display surface 21S through a gap between the reflective electrodes 32 adjacent to each other. In addition, at least a part of the external light L2 incident on the display unit 21 from the display surface 21S side is transmitted through the transparent electrode 34 and the liquid crystal layer 33 and reflected on the display surface 21S side on the surface of the reflective electrode 32, thereby displaying the display surface 21S. Exits from.

  The liquid crystal layer 33 has liquid crystal molecules, and the orientation of the liquid crystal molecules changes when a voltage is applied to the reflective electrode 32 and the transparent electrode 34. By changing the alignment of the liquid crystal molecules, light transmission and non-transmission are switched, and light can be emitted from a desired portion of the display surface 21S of the display unit 21.

  The light emitted from the display surface 21S of the display unit 21 is emitted through the color filter 35, whereby the light emitted from the display surface 21S of the display unit 21 can be changed to light of a desired color. In the present embodiment, the color filter 35 in the stop lamp region 23 is configured to emit red light, the color filter 35 in the turn lamp region 24 is configured to emit orange light, and the back lamp region 25. The color filter 35 is configured to emit white light.

  The control unit of the present embodiment is accommodated in the space between the edge cover 22 and the display unit 21. The control unit is electrically connected to a control device such as an ECU (Engine Control Unit) of the vehicle VE, the light source 30, and the reflective electrode 32 and the transparent electrode 34 via a drive circuit (not shown). The control unit controls the lighting state of the display unit 21 of the reflective display 20. The control unit performs this control based on a signal input from the control device of the vehicle VE to the control unit.

  Each of the reflection members 40 and 41 of the present embodiment is formed by forming a reflection film by metal vapor deposition or the like on the back surface of a colorless and translucent plate-like member. Therefore, the reflection members 40 and 41 reflect the light incident from the surface side to the surface side by the reflection film and emit the light from the surface. As shown in FIG. 2, the reflection member 40 is positioned above the display unit 21 and the surface 11 of the frame 11 between the display unit 21 and the cover 13 so that the surface 40S faces the inside of the frame 11. Fixed to the inner peripheral surface. On the other hand, the reflecting member 41 is fixed to the inner peripheral surface of the frame body 11 between the display unit 21 and the cover 13 so that the surface 41S faces the inner side of the frame body 11 and is positioned below the display unit 21. Is done. The reflection members 40, 40 arranged in this way are display units when the display unit 21 is viewed from the opening 11 </ b> H of the frame body 11 in the internal space surrounded by the frame body 11 in the internal space 14 of the housing 10. It will be located around 21. The reflection members 40 and 41 having such a configuration reflect the light incident from the surfaces 40S and 41S side of the reflection members 40 and 41 through the cover 13 and the opening 11H to the surfaces 40S and 41S by the reflection film, thereby reflecting the light. It leads to the display unit 21 of the display 20. The reflecting members 40 and 41 have a width that is substantially equal to the width of the display unit 21 in the left-right direction.

  Next, the operation of the reflective display 20 will be described.

  The above-described control unit detects a signal indicating the brake operation from the control device of the vehicle VE, and controls the display unit 21 when the signal indicating the brake operation is input to the control unit. The stop lamp area 23 is turned on. Specifically, the control unit controls the light source 30 to light the part corresponding to the stop lamp region 23. Further, the control unit drives the drive circuit described above. This drive circuit adjusts the voltage applied to the reflective electrode 32 and the transparent electrode 34 so that the region corresponding to the stop lamp region 23 in the liquid crystal layer is in a state of transmitting light, and the turn lamp region 24 and the back lamp region. The state of the liquid crystal layer is adjusted so that the region corresponding to 25 is in a state in which light is not transmitted. Thus, when the control unit controls the display unit 21, a part of the light L <b> 1 emitted from the light source 30 is emitted from the stop lamp region 23 of the display surface 21 </ b> S in the display unit 21. At this time, a part of the external light L2 incident on the stop lamp region 23 of the display unit 21 is reflected to the display surface 21S side on the surface of the reflective electrode 32 and is emitted from the stop lamp region 23 of the display unit 21. As described above, the light L1 emitted from the light source 30 and a part of the external light L2 are emitted from the stop lamp region 23, so that the stop lamp region 23 is turned on.

  In addition, when a signal related to the turn operation from the control device of the vehicle VE is input, the control unit controls the display unit 21 to turn on the light source 30 in the same manner as when the stop lamp region 23 is turned on. A part of the emitted light L1 is emitted from the turn lamp area 24 in the display unit 21 at predetermined time intervals. When the light L1 emitted from the light source 30 is emitted from the turn lamp region 24, a part of the external light L2 incident on the turn lamp region 24 of the display unit 21 is reflected on the display surface 21S side on the surface of the reflective electrode 32. Then, the light is emitted from the turn lamp area 24 of the display surface 21S in the display unit 21. As described above, the light L1 emitted from the light source 30 and a part of the external light L2 are emitted from the turn lamp area 24 at predetermined time intervals, whereby the turn lamp area 24 is blinked.

  In addition, when a signal related to the back operation from the control device for the vehicle VE is input, the control unit controls the display unit 21 to turn on the light source 30 in the same manner as when the stop lamp region 23 is turned on. A part of the emitted light L <b> 1 is emitted from the back lamp region 25 in the display unit 21. At this time, a part of the external light L2 incident on the back lamp region 25 of the display unit 21 is reflected to the display surface 21S side on the surface of the reflective electrode 32 and is emitted from the back lamp region 25 of the display unit 21. As described above, the light L1 emitted from the light source 30 and a part of the external light L2 are emitted from the backlamp area 25, so that the backlamp area 25 is turned on.

  In this way, the reflective display 20 performs display using part of the light L1 emitted from the light source 30 of the display unit 21 and the external light L2 incident on the display unit 21. Examples of the external light L2 incident on the display unit 21 include natural light such as sunlight, light from street lamps, reflected light obtained by reflecting them on the road surface, and the like. External light L2 such as sunlight travels toward the display unit 21 from obliquely above the display unit 21. Further, the external light L <b> 2 reflected by the road surface or the like travels from the obliquely lower side of the display unit 21 toward the display unit 21.

  Here, the external light L2 incident on the display unit 21 will be described.

  FIG. 4 is a diagram illustrating an example of the optical path of the external light L2 incident on the display unit 21 from the same viewpoint as FIG. In the state shown in FIG. 4, external light L <b> 2 heading from the diagonally upward to the display unit 21 is blocked by the external light L <b> 21 </ b> A that directly enters the display unit 21, the outer plate 50, and the frame 11 of the housing 10. It includes external light L21B that is not incident, external light L21C that is incident on the lower side of the inner peripheral surface of the frame 11 without being incident on the display unit 21, and the like. A reflective member 41 is attached to the inner peripheral surface of the frame 11 on the lower side of the display unit 21 and closer to the opening 11H than the display unit 21. Accordingly, a part of the external light L21C enters the reflection member 41, is reflected by the reflection film of the reflection member 41, and is guided to the display unit 21.

  In addition, the external light L2 reflected from the road surface or the like and directed obliquely from below to the display unit 21 is blocked by the external light L22A that directly enters the display unit 21, the outer plate 50, or the frame 11 of the housing 10, and the display unit 21. Outside light L22B that is not incident on the display unit 21 and outside light L22C that is incident on the upper side of the inner peripheral surface of the frame body 11 without being incident on the display unit 21. A reflection member 40 is attached to the inner peripheral surface above the display unit 21 and on the opening 11H side of the frame 11 from the display unit 21. Accordingly, a part of the external light L22C enters the reflection member 40, is reflected by the reflection film of the reflection member 40, and is guided to the display unit 21.

  In this way, the external light L21C and L22C guided to the display unit 21 by the reflective members 41 and 40 and a part of the external light L21A and L22A directly incident on the display unit 21 are part of the surface of the reflective electrode 32 as described above. The light is reflected from the display surface 21S side and emitted from the display unit 21, and is used for display on the reflective display 20.

  As described above, the marker lamp 1 that is the vehicle display device of the present embodiment reflects the light incident on the display unit 21 and emits the light from the display unit 21 to display the display. A frame 11 that surrounds the periphery of the reflective display 20 including the portion 21 and extends toward the outside of the vehicle VE, and has an opening 11H in which the display portion 21 is visible from the outside of the vehicle VE, and reflection as an optical member. Members 40 and 41. The reflection members 40 and 41 are disposed around the display unit 21 when the display unit 21 is viewed from the opening 11H in the internal space surrounded by the frame 11 in the internal space 14 of the housing 10. The light incident on 40 and 41 is guided to the display unit 21.

  According to such a marker lamp 1 of the present embodiment, the display unit 21 can be visually recognized from the outside of the vehicle VE through the opening 11H of the frame body 11, and thus an optical path extending from the outside of the vehicle VE to the display unit 21 is formed. In addition, light from a light source located outside the vehicle, such as the sun or street light, can enter the display unit 21. For this reason, the reflective display 20 can perform display using the external light L2. Further, since the frame 11 surrounds the periphery of the reflective display 20, the reflective display 20 including the display unit 21 is protected by the frame 11. The reflection members 40 and 41 are arranged around the display unit 21 when the display unit 21 is viewed from the opening 11H in the internal space surrounded by the frame 11 in the internal space 14 of the housing 10. , 41 is guided to the display unit 21. Therefore, even if the external light L2 is blocked by the frame 11 and the amount of external light incident on the display unit 21 is reduced, the external light L2 is guided to the display unit 21 by the reflecting members 40 and 41. It can suppress that the quantity of the external light L2 which injects into the display part 21 falls. Therefore, it can be set as the marker lamp 1 which can suppress the fall of the brightness | luminance of the light radiate | emitted from the display part 21, and can suppress the fall of the visibility at the time of displaying using the external light L2.

(Second Embodiment)
Next, a second embodiment of the present invention will be described in detail with reference to FIG. FIG. 5 is a diagram showing the vehicle display device according to the second embodiment of the present invention from the same viewpoint as that in FIG. 4, and a straight line L3 in FIG. 5 is a straight line parallel to the horizontal direction. In addition, about the component which is the same as that of 1st Embodiment, or equivalent, except the case where it demonstrates especially, the same referential mark is attached | subjected and the overlapping description is abbreviate | omitted.

  The marker lamp 1 as the vehicle display device of the present embodiment shown in FIG. 5 is the first embodiment in that the reflective display 20 is tilted with respect to the vertical direction and does not include the reflective member 40 as an optical member. This is different from 1

  The reflective display 20 of the present embodiment is tilted so that the display unit 21 faces downward with respect to the vertical direction. As an optical member of the present embodiment, the reflection member 41 is disposed below the display unit 21.

  As described above, the external light L2 that is directed obliquely from the upper side, such as sunlight, to the reflective display 20 is blocked and displayed by the external light L21A that directly enters the display unit 21, the outer plate 50, and the frame 11 of the housing 10. The external light L21B not incident on the part 21 and the external light L21C incident on the lower side of the inner peripheral surface of the frame 11 without entering the display part 21 are included. Part of the external light L21C enters the reflection member 41, is reflected by the reflection film of the reflection member 41, and is guided to the display unit 21. Note that external light L22A that is reflected from the road surface or the like and is directed obliquely from below to the display unit 21 also enters the display unit 21.

  Here, since the reflective display 20 is tilted so that the display unit 21 is directed downward with respect to the vertical direction, sunlight reflected from the display surface 21S of the display unit 21 toward the display unit 21 from above. There are many things going diagonally downward. For this reason, the amount of sunlight reflected by the display surface 21S and the like of the display unit 21 and emitted to the outside of the vehicle VE through the opening 11H of the frame 11 is smaller than the amount in the marker lamp 1 of the first embodiment. It is said. Note that the amount of sunlight that is directed obliquely from the upper side to the display unit 21 and is directly incident on the display unit 21 is set to be smaller than the amount of the marker lamp 1 according to the first embodiment.

  As described above, the reflective display 20 is tilted so that the display unit 21 faces downward with respect to the vertical direction, and the reflective member 41 is disposed below the display unit 21.

  According to the marker lamp 1 of the present embodiment, the reflective display 20 is tilted so that the display unit 21 faces downward. Therefore, the reflective display 20 is reflected by the display surface 21S of the display unit 21 and the opening 11H of the frame 11. The amount of sunlight emitted to the outside of the vehicle VE via the vehicle is reduced. For this reason, it is suppressed that the brightness | luminance of the light which goes outside the vehicle from the display part 21 becomes higher than a predetermined value. Therefore, the glare which is a phenomenon in which the light emitted from the display unit 21 is too bright and the marker lamp 1 becomes difficult to visually recognize can be suppressed. Further, although the amount of sunlight directly incident on the display unit 21 is reduced, a part of sunlight can be incident on the display unit 21 by the reflecting member 41. For this reason, it can be set as the marker lamp 1 which can suppress the fall of the brightness | luminance of the light radiate | emitted from the display part 21 outside a vehicle, and can suppress the fall of the visibility at the time of displaying using external light.

  Note that the downward tilt angle θ with respect to the horizontal direction of the reflective display 20 is preferably not less than 32 degrees and not more than 78 degrees when the vehicle VE is used in an area where the latitude is approximately 35 degrees north latitude, for example. Although the maximum angle of the sun with respect to the horizontal direction varies depending on the season, glare can be suppressed regardless of the season by setting the tilt angle θ of the reflective display 20 to be not less than 32 degrees and not more than 78 degrees.

(Third embodiment)
Next, a third embodiment of the present invention will be described in detail with reference to FIGS. FIG. 6 is a diagram showing the main part of the vehicle display device in the third embodiment of the present invention from the same viewpoint as FIG. 4, and FIG. 7 shows the main part of the vehicle display device in the third embodiment of the present invention. It is a front view. In addition, about the component which is the same as that of 1st Embodiment, or equivalent, except the case where it demonstrates especially, the same referential mark is attached | subjected and the overlapping description is abbreviate | omitted. Further, in FIG. 7, for easy understanding, the main configuration of the vehicle display device is shown, and the description of the outer plate 50 as the exterior of the vehicle is omitted.

  The marker lamp 1 as the vehicle display device of the present embodiment shown in FIGS. 6 and 7 is first provided with a light guide member 42 instead of the reflecting members 40 and 41 as optical members, and with a reflector 43. Different from the marker lamp 1 of the embodiment.

  The light guide member 42 as an optical member of the present embodiment is formed by, for example, forming a transparent resin having a light transmitting property in a columnar shape. The light guide member 42 has an emission part 44 at one end. The emitting portion 44 is disposed above the display portion 21 and in the vicinity of the inner peripheral surface of the frame 11 on the opening 11H side relative to the display portion 21. Outgoing part 44 arranged in this way is part of display part 21 when front view of display part 21 is shown in opening 11H of frame 11 among internal space surrounded by frame 11 in internal space 14 of case 10. It will be located around. The emission part 44 has a length substantially equal to the lateral width of the display part 21. Further, as shown in FIG. 6, the emitting portion 44 has a reflecting portion 45 in which a plurality of steps are formed in an array on the opposite side of the outer peripheral surface from the display portion 21.

  As shown in FIG. 7, the frame body 11 is formed with an opening 11 </ b> H <b> 2 that penetrates the frame body 11 in the radial direction. An opening (not shown) that penetrates the outer plate 50 in the thickness direction is formed in the outer plate 50 that is a part of the exterior of the vehicle VE. The light guide member 42 is inserted into the opening 11H2 of the frame body 11 and the opening of the outer plate 50, and an end (not shown) of the light guide member 42 opposite to the emission portion 44 is exposed to the outside of the vehicle VE. In the light guide member 42, external light L 2 incident on an end face (not shown) exposed to the outside of the vehicle VE passes through the light guide member 42, is reflected by the reflecting portion 45, and is displayed on the outer peripheral surface of the emitting portion 44 It is configured to be diffused and emitted from the side of the portion 21.

  As shown in FIG. 6, the reflector 43 is formed by forming a reflection film by metal vapor deposition or the like on one surface of a colorless and translucent plate-like member. The shape of the reflector 43 in a cross section perpendicular to the longitudinal direction is a substantially arc shape that is curved so that the surface on which the reflective film is formed is on the outer side. The reflector 43 is disposed so as to surround the periphery of the light emitting member 42 on the side opposite to the display unit 21 in the emitting unit 44. For this reason, the reflector 43 reflects a part of the light emitted from the emission part 44 of the light guide member 42 by the reflection film and guides it to the display part 21.

  As described above, the light guide member 42 diffuses and emits light incident from the end surface exposed to the outside of the vehicle VE from the display unit 21 side on the outer peripheral surface of the emitting unit 44 different from the end surface. To the display unit 21.

  According to the marker lamp 1 of this embodiment, the amount of the external light L2 incident on the display unit 21 is determined by the position and orientation of the end surface exposed to the outside of the vehicle VE as the incident surface of the light guide member 42. The brightness of light emitted from the display unit 21 can be easily adjusted. Further, the external light L <b> 2 guided to the display unit 21 by the light guide member 42 is not easily affected by the distance between the opening 11 </ b> H of the frame 11 and the display unit 21. For this reason, the design freedom of the marker lamp 1 can be improved. Further, since the light guide member 42 diffuses and emits the external light L2 from the emission unit 44, the external light L2 can be dispersed and incident on the display unit 21. For this reason, the brightness of the light emitted from the display unit 21 is less likely to be uneven, and the visibility of the marker lamp 1 can be improved. Further, in the present embodiment, the reflector 43 reflects a part of the light emitted from the light emitting portion 44 of the light guide member 42 by the reflection film and guides it to the display portion 21, so that the external light L2 is effectively displayed on the display portion. 21 can be made incident.

  As mentioned above, although this invention was demonstrated to the example for embodiment, this invention is not limited to these.

  For example, in the above embodiment, the reflective display 20 in which a backlight is used as the light source 30 has been described as an example, but the present invention is not particularly limited. FIG. 8 is a diagram schematically showing a section in the thickness direction of a part of the display unit 21 of the reflective display 20 according to the modification.

  The display unit 21 shown in FIG. 8 is different from the display unit 21 of the above embodiment in that the light source 30 is provided on the display surface 21S side of the display unit 21 and the reflective electrode 32 is formed without a gap. In the display unit 21 of this modification, at least a part of the light L1 and the external light L2 emitted from the light source 30 are irradiated on the display surface 21S of the display unit 21 and incident on the display unit 21, and reflected by the surface of the reflective electrode 32. Then, the light is emitted from the display surface 21S of the display unit 21.

  The reflective display 20 may be a dot matrix type display. In such a reflective display 20, red light is emitted from the dots in the stop lamp area 23, orange light is emitted from the dots in the turn lamp area 24, and the dots in the turn lamp area 24 are emitted from the dots. It is configured to emit white light.

  Moreover, in the said embodiment, although the marker lamp 1 provided one each in the left-right direction of the vehicle VE was demonstrated to the example, the marker lamp 1 should just be provided at least one each in the left-right direction of the vehicle VE. A plurality may be provided on the left side, a plurality may be provided on the right side, and a plurality may be provided on both the left and right sides.

  Moreover, in the said embodiment, although the marker lamp 1 was demonstrated to the example as a display apparatus for vehicles, even if the display apparatus for vehicles is a display apparatus which displays an image etc. toward the exterior of a vehicle not only a marker lamp. good. In the case of such a display device, for example, the reflective display 20 is a dot matrix type display as described above, and the above-described control unit is electrically connected to an image display instruction unit or the like. The image display instruction unit outputs a signal for causing the display unit 21 to display an image. This signal includes information related to the contents of the image. The control unit controls the display unit 21 based on the signal from the image display instruction unit to display an image on the display unit 21.

  Further, when the vehicle display device of the present invention is not a marker lamp or the like and is not necessarily required to always be displayed and can be displayed during the daytime, the reflective display 20 uses the light source 30. The structure which is not provided may be sufficient.

  Moreover, although the said embodiment demonstrated the case 10 provided with the frame 11, the baseplate 12, and the cover 13 as an example, it is not specifically limited. The housing 10 may be configured to surround at least the periphery of the display unit 21 of the reflective display 20. For example, the housing 10 may be composed of only the frame body 11. As the frame 11 having such a configuration, for example, when the display unit 21 is viewed from the front, the frame 11 surrounds the periphery of the display unit 21 and extends from the edge cover 22 of the reflective display 20 toward the outside of the vehicle VE. 11 is mentioned.

  In the above embodiment, the cover 13 made of a colorless and translucent material has been described as an example. However, the cover 13 only needs to be translucent and may be colored. However, the cover 13 is preferably colorless from the viewpoint of effectively using external light incident on the display unit 21 via the cover 13 for display on the display unit 21.

  Moreover, although said 1st Embodiment and 2nd Embodiment demonstrated as an example the reflective members 40 and 41 by which the reflecting film by metal vapor deposition etc. is formed in the back surface of a plate-shaped member as a reflecting member, it does not specifically limit. For example, the reflective members 40 and 41 have a reflective film formed on the back surface having fine irregularities, and reflect light incident from the front surface 40S and 41S side to the front surface 40S and 41S side, and from the front surface 40S and 41S. You may comprise so that it may radiate | emit and radiate | emit. With this configuration, the reflecting members 40 and 41 can disperse the light and make it incident on the display unit 21. For this reason, unevenness is less likely to occur in the luminance of the light emitted from the display unit 21, and the visibility of the marker lamp 1 when performing display using external light can be improved. Further, the reflecting members 40 and 41 may be reflecting films formed by metal vapor deposition or the like formed on the inner peripheral surface of the frame body 11.

  Moreover, in said 1st Embodiment, the marker lamp 1 was set as the structure provided with the reflective member 40 located in the upper side rather than the display part 21, and the reflective member 41 located in the lower side rather than the display part 21. FIG. However, in the first embodiment, the marker lamp 1 may be configured to include either one of the reflecting member 40 or the reflecting member 41 as an optical member, and includes another reflecting member positioned on the left and right of the display unit 21. It may be configured. Further, the reflecting members 40 and 41 may extend to the inner side of the vehicle VE than the reflective display 20. Further, the reflection members 40 and 41 may be configured to surround the entire periphery of the display unit 21 when the display unit 21 is viewed from the front.

  In the second embodiment, the reflective display 20 is tilted so that the display unit 21 faces downward with respect to the vertical direction. However, the reflective display 20 may be tilted so that the display unit 21 faces upward with respect to the vertical direction.

  In the third embodiment, the marker lamp 1 includes the reflector 43. However, in the third embodiment, the marker lamp 1 does not have to include the reflector 43.

  In the third embodiment, the cylindrical light guide member 42 is described as an example of the light guide member, but the present invention is not particularly limited. For example, the light guide member 42 may be a prismatic member. In addition, the light guide member 42 may be configured such that the emission unit 44 is positioned below the display unit 21, and the emission unit 44 surrounds the entire circumference of the display unit 21 when the display unit 21 is viewed from the front. The structure which extends may be sufficient.

  In the third embodiment, when the display unit 21 is viewed from the front, a part of the light guide member 42 and the reflector 43 as optical members overlaps the display unit 21. However, in the third embodiment, the light guide member 42 and the reflector 43 are preferably arranged so as not to overlap the display unit 21 when the display unit 21 is viewed from the front.

  ADVANTAGE OF THE INVENTION According to this invention, the display apparatus for vehicles which can suppress the fall of the visibility at the time of performing display using external light, protecting a display part is provided, and can be utilized in the field | areas of vehicles, such as a motor vehicle. is there.

1 ... Signal lamp (vehicle display device)
DESCRIPTION OF SYMBOLS 10 ... Housing 11 ... Frame 11H ... Opening 12 ... Bottom plate 13 ... Cover 14 ... Internal space 20 ... Reflective display 21 ... Display units 40, 41 ..Reflecting members (optical members)
42. Light guide member (optical member)
44 ... Outgoing portions L2, L21A, L21B, L21C, L22A, L22B, L22C ... External light VE ... Vehicle

Claims (6)

A reflective display that displays light by reflecting light incident on the display unit and emitting it from the display unit;
A frame that surrounds the periphery of the display unit and extends toward the outside of the vehicle, and has an opening in which the display unit is visible from the outside of the vehicle;
An optical member;
With
The optical member is disposed around the display unit when the display unit is viewed from the opening in the internal space surrounded by the frame, and guides light incident on the optical member to the display unit. A display device for a vehicle. The vehicle display device according to claim 1, wherein the reflective display is tilted with respect to a vertical direction. The reflective display is tilted so that the display unit faces downward,
The vehicle display device according to claim 2, wherein the optical member is disposed below the display unit. 4. The vehicle display device according to claim 1, wherein the optical member is a reflective member that reflects light incident on the optical member and guides the light to the display unit. 5. . 4. The optical member according to claim 1, wherein the optical member is a light guide member that emits light incident on the optical member from a surface different from an incident surface and guides the light to the display unit. 5. The vehicle display device according to the item. The vehicle display device according to claim 1, wherein the optical member guides the light incident on the optical member to the display unit by diffusing and emitting the light.

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