JP2014228392A - Display device for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a display device for a vehicle for improving decorativeness.SOLUTION: A display device 1 for a vehicle comprises: a display plate 10 for displaying vehicle information in a display area 2; a decoration formation part 146 for forming an optical decoration image 149 by light emission by means of transmitted illumination; and a decorative lens 74 for refracting, in a decoration area 4 for decorating the display area 2, the optical decoration image 149 projected from the decoration formation part 146 at the rear, the decorative lens 74 displaying the optical decoration image 149 by light emission as a virtual image which can be visually recognized from the front. The decoration formation part 146 forms a plurality of the optical decoration images 149. The decorative lens 74 has a prescribed number of juxtaposed groove parts 75 each having a cross section of a V-character shape for causing each of the optical decoration images 149 to be refracted by groove inner surfaces 750, 752.

Description

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

  2. Description of the Related Art Conventionally, a display device for a vehicle that sets a decoration area for decorating the display area with respect to a display area for displaying vehicle information on a display board, and displays the decoration light image in the decoration area so as to be visible from the front. It has been known.

  In a device disclosed in Patent Document 1 as one type of such a display device for a vehicle, a decorative light image whose light emission luminance changes in a gradation is emitted and displayed by transmitting and illuminating a translucent light guide member with light from a light source. ing.

JP 2012-144146 A

  However, since the decorative light image is formed by the light emission of the plate-shaped light guide member itself in the vehicle display device disclosed in Patent Document 1, the decorative light image is displayed as a planar display by the vehicle occupant ahead. Visible. That is, it is difficult to enhance the decorativeness by giving a stereoscopic effect to the light emitting display of the decorative light image.

  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 improves decorativeness.

  The present invention includes a display board (10) for displaying vehicle information in the display area (2), a decoration forming part (146) for emitting a decorative light image (149) by transmitting light, and a display area. In the decoration region for decoration, the decoration lens unit (74) refracts the decoration light image projected from the decoration forming portion on the rear side, and is separated from the decoration formation portion so that the decoration light image is seen from the front. And a decorative lens unit that emits and displays light as a visually recognizable virtual image.

  According to the present invention, the decorative light image formed by light emission by the transmitted illumination of the decoration forming portion is refracted by being projected from the decoration forming portion behind the decoration lens portion. As a result, in the decoration area for decorating the display area, the decoration light image is emitted and displayed as a virtual image at a position corresponding to the separation distance between the decoration lens part and the decoration formation part. Depending on the vehicle occupant ahead, it can be viewed three-dimensionally. According to such a three-dimensional light-emitting display, the decorativeness can be improved.

  Here, as a further feature of the present invention, the decoration forming unit forms a plurality of decorative light images, and the decorative lens unit has a V-shaped cross section (75) that refracts each decorative light image by the groove inner surface (750, 752). ) Are arranged in a predetermined number.

  According to the decorative lens part in which a predetermined number of V-shaped groove parts are arranged like this feature, a plurality of decorative light images are refracted by the groove inner surface of each groove part, so that the three-dimensionally overlapping images can be visually recognized from the front. A virtual image can be emitted and displayed. According to this, the stereoscopic effect of the light emitting display can be increased, and the effect of improving the decorativeness can be enhanced.

  Further, as a further feature of the present invention, a display board that integrally forms a decoration forming portion, and a decorative member (70) that is disposed in front of the display board and integrally forms a decorative lens portion and decorates the display area, Prepare.

  According to this feature, when the decorative light image is projected from the decorative forming portion integrally formed on the display board to the front decorative member, the decorative light image is refracted by the decorative lens portion integrally formed on the decorative member. Thus, virtual image display is realized. According to this, in combination with the decorative function of the decorative member itself that decorates the display area, a three-dimensional light emitting display function can be exhibited, so that the effect of improving decorativeness can be enhanced.

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 which shows the display state by the display apparatus for vehicles of FIG. It is sectional drawing which shows the modification of FIG. It is sectional drawing 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, an inner peripheral light source 30, a light guide member 40, an outer peripheral light source 50, a partition member 60, a decoration member 70, and a control circuit 80. In the device 1, a display area 2 for displaying vehicle information and a decoration area 4 for decorating the area 2 from the outer periphery side are set. Note that “front” in the device 1 indicates a direction in which vehicle information is displayed to the occupant in the passenger compartment of the vehicle, that is, a side viewed by the occupant. On the other hand, “rear” in the vehicle display device 1 indicates a direction opposite to the direction of displaying to the occupant.

  As shown in FIG. 2, the display board 10 is formed in a plate shape by laminating a light shielding layer 14 made of dark ink such as acrylic resin on a base material 12 made of translucent resin such as polycarbonate resin. . In the display area 2 shown in FIGS. 1 to 3, a plurality of indicators 16 are formed side by side in the circumferential direction because the light shielding layers 14 are not provided at a plurality of locations. Each index 16 of a contour shape imitating a scale or a character is displayed by emitting light by allowing light source light reaching through the base material 12 to pass forward. Further, in the display area 2, the vehicle information is displayed by the pointer 18 rotating in front of the display board 10 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 decorative region 4, the display board 10 integrally forms an annular bank portion 142 along the entire circumferential direction of the display region 2. The bank portion 142 protrudes forward in a substantially mountain shape in cross section, thereby securing the light guide space 140 in the rear. In the bank portion 142, a part of the light shielding layer 14 is not provided over the entire circumferential direction, so that an illumination window portion 144 is formed. The annular illumination window portion 144 allows the light source light reaching through the base material 12 to pass to the outer peripheral side and the front side.

  Further, in the decorative region 4, on the outer peripheral side of the bank portion 142, the display board 10 is integrally formed with a bottomed cylindrical decoration forming portion 146 at two locations spaced in the circumferential direction. The decoration forming portion 146 has a light guide space 147 in the front by being recessed backward in a substantially U-shaped cross section. In the bottom part 146a of the decoration forming part 146, a plurality of decoration window parts 148 are formed because the light shielding layer 14 is not provided at a plurality of places. Each decorative window portion 148 having a predetermined contour shape (for example, a rectangular shape in the present embodiment) transmits a plurality of decorative light images 149 (see FIG. 4) by allowing light source light reaching through the base material 12 to pass forward. To do.

  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, an inner peripheral light source 30 made of a light emitting diode (LED) or the like is mounted on the circuit board 20 behind the display board 10 in the display area 2. One inner circumferential light source 30 is disposed at each of a plurality of locations spaced by a predetermined interval along the circumferential direction of the display region 2. Each inner peripheral light source 30 is turned on when energized to emit light in a predetermined color, and in this embodiment, in particular, 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 disposed across the display area 2 and the decoration area 4 behind the display board 10. Has been. The inner peripheral edge portion 42 of the light guide member 40 protrudes rearward so as to be opposed to each inner peripheral light source 30. The outer peripheral edge portion 44 of the light guide member 40 is disposed behind the decorative window portion 144 by protruding into the front light guide space 140. With these arrangement forms, the light guide member 40 guides light source light (hereinafter referred to as “inner light source light”) emitted from each inner peripheral light source 30 to the outer peripheral edge 44 by internal reflection, and the bank portion 142. To enter. The incident inner peripheral light source light passes through the decorative window 144 and is guided from the inner peripheral side to the outer peripheral side of the bank portion 142 and from the rear to the front. The light guide member 40 causes the indicators 16 positioned in front of the intermediate portion between the edge portions 42 and 44 to pass through the inner peripheral light source light (not shown), thereby causing the indicators 16 to emit light.

  As shown in FIGS. 1 to 3, the peripheral light source 50 made of a light emitting diode (LED) or the like is mounted on the circuit board 20 behind the decoration forming portion 146 in the decoration region 4. A plurality of outer peripheral light sources 50 are arranged, for example, in a chip shape at two locations with a predetermined interval in the circumferential direction of the decorative region 4. Each outer light source 50 is turned on by energization to emit light in a predetermined color, and in this embodiment, in particular, emits blue and green different from each other at the same location. The light source light emitted from each of the peripheral light sources 50 (hereinafter referred to as “peripheral light source light”) is incident on the decoration forming portion 144.

  As shown in FIG. 2, the partition member 60 includes a light shielding part 62 and a diffusion part 64 combined with each other. The light shielding part 62 is made of an opaque resin such as ABS resin, and surrounds the periphery of the outer peripheral light source 50 at each location between the decoration forming part 146 and the circuit board 20. The light shielding portion 60 extends from the bottom portion 146a of the decoration forming portion 146 to the circuit board 20, thereby restricting the leakage of the peripheral light source light from each peripheral light source 50 toward the light guide member 40. The diffusing portion 64 is made of a light-transmitting resin such as polycarbonate resin and has a light diffusing function by kneading a light diffusing agent or forming a textured surface. The diffusing unit 64 faces the outer peripheral light source 50 by being disposed in the front end portion of the light shielding unit 60 in a state of being overlapped rearward with respect to the bottom 146a of the decoration forming unit 146. The outer peripheral light source light is diffused through the diffusing portion 64 and then passes through the illumination window portions 144 of the decoration forming portion 146 in such a facing form. As a result, the decorative light image 149 (see FIG. 4) formed by light emission along the contour shape of each decorative window portion 148 is projected forward.

  As shown in FIGS. 1 to 3, the decorative member 70 is made of a light-transmitting resin such as acrylic resin or polycarbonate resin, and is disposed in front of the display board 10 in the decorative region 4. The decoration member 70 decorates the display area 2 by receiving light from at least one of the inner peripheral light source light and the outer peripheral light source light to emit light. The decorative member 70 integrally forms a decorative illumination part 72, a decorative lens part 74, and an edge light part 76.

  The decorative illumination part 72 is formed in a cross-sectional mountain shape that protrudes further forward than the other parts 74 and 76 of the same decorative member 70, and extends in an annular shape along the entire circumferential direction of the display region 2. The decorative illumination part 72 covers the entire circumferential direction of the decorative window part 144 so as not to be directly visible from the front. The decorative illumination unit 72 in the cover form is illuminated by the inner peripheral light source light guided from the decorative window unit 144.

  The decorative lens portions 74 are formed at two locations spaced in the circumferential direction on the outer peripheral side of the decorative illumination portion 72. Each decorative lens unit 74 is illuminated by the inner peripheral light source light guided from the decorative illumination unit 72 by spreading in a substantially flat plate shape from the bottom of the decorative illumination unit 72. Further, as shown in FIG. 2, the decorative lens portions 74 are arranged in front of the corresponding decorative forming portions 146, so that the peripheral light source light that has passed through the decorative window portions 148 of the corresponding forming portions 146 is also used. Illuminated through the light guide space 147. Here, since the light passing through each decorative window 148 forms the decorative light image 149 as described above, the decorative lens part 74 is formed with a decorative element spaced apart by a predetermined distance (for example, about 6 mm in this embodiment). The decorative light image 149 is projected from the portion 146.

  As shown in FIGS. 2 and 3, the decorative lens portion 74 has a groove 75 having a V-shaped cross section on the front surface 74a. About the groove part 75 of this embodiment, the predetermined number is formed side by side toward the edge light part 76 side explained in full detail later from the decoration illumination part 72 side. Each groove portion 75 has a groove inner surface 750 that inclines toward the decorative illumination portion 72 as it goes from the rear to the front, and a groove inner surface 752 that inclines toward the opposite side to the decorative illumination portion 72 as it goes from the rear to the front. Yes. Each groove part 75 refracts the outer peripheral light source light as the decoration light image 149 incident on the groove inner surfaces 750 and 752 from the decoration forming part 146 located on the rear side. The outer peripheral light source light subjected to such a refractive action is incident on the occupant's pupil in front of the decorative lens portion 74. Here, especially in the present embodiment, the element 146a, 146a, 146a, 146a, and the like so that the virtual image of the decorative light image 149 as shown in FIG. The separation distance between 74, the inclination angle of the groove inner surfaces 750 and 752, and the like are preset. With the above-described configuration, the decorative light image 149 is emitted and displayed as a plurality of virtual images that float in the decorative region 4 on the outer periphery side of the display region 2 and overlap each other as shown in FIG.

  As shown in FIGS. 1 to 3, the edge light portions 76 are formed at two positions of the edge portion 700 of the decorative member 70 that sandwich the decorative lens portions 74 with the decorative illumination portion 72. As shown in FIGS. 2 and 3, the edge light portion 76 has a reflection surface 760 that is inclined toward the nearest decorative lens portion 74 as it goes from the front to the rear. The edge light unit 76 is illuminated by inner peripheral light source light that reaches the reflecting surface 760 from the decorative illumination unit 72 through the decorative lens unit 74. At this time, the reflecting surface 760 reflects the inner peripheral light source light forward. In the present embodiment, the inner surface of each groove portion 75 is controlled so as to suppress the phenomenon that the peripheral light source light is reflected by the groove portions 75 toward the edge light portion 76 and further reflected forward by the reflection surface 760. Inclination angles of 750 and 752 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 inner peripheral light source light by energization control to each inner peripheral light source 30. On the other hand, the control circuit 80 generates peripheral light source light in a color corresponding to a change in vehicle information (for example, fuel efficiency information) among blue and green by energization control to each peripheral light source 50. Note that the inner peripheral light source light and the outer peripheral light source light may be generated at the same time, or may be generated by switching to one according to the vehicle information. Here, in particular, when the inner peripheral light source light and the outer peripheral light source light are generated simultaneously, the luminance of the outer peripheral light source light reaching each decorative lens unit 74 is set to be the same as that of the inner peripheral light source light reaching the same decorative lens unit 74. It is desirable to set it higher than the brightness. Further, vehicle information for variably controlling the hue of the outer periphery light source light and vehicle information for switching between the inner periphery light source light and the outer periphery light source light are not limited to those detected by the various sensors of the vehicle as described above. The vehicle may be input from an occupant to an input device such as a switch in the vehicle.

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

  According to the apparatus 1, the decorative light image 149 formed by light emission by the transmitted illumination of the decoration forming unit 146 is refracted by being projected from the decoration forming unit 146 behind the decoration lens unit 74. As a result, in the decoration area 4 for decorating the display area 2, the decoration light image 149 is emitted and displayed as a virtual image at a position corresponding to the separation distance between the decoration lens section 74 and the decoration formation section 146. Depending on the vehicle occupant ahead of the decoration forming portion 146, the vehicle can be viewed in three dimensions. According to such a three-dimensional light-emitting display, the decorativeness can be improved.

  Further, according to the decorative lens portion 74 in which a predetermined number of V-shaped groove portions 75 are arranged as in the device 1, a plurality of decorative light images 149 are refracted by the groove inner surfaces 750 and 752 of each groove portion 75, so Thus, it is possible to perform a light-emitting display of a virtual image that can be visually recognized in an overlapping manner. According to this, the stereoscopic effect of the light emitting display can be increased, and the effect of improving the decorativeness can be enhanced. Here, in particular, each groove portion 75 is formed on the front surface 74a of the decorative lens portion 74, so that the separation distance between the groove portion 75 and the decoration forming portion 146 increases as much as possible. Since the feeling also increases, the effect of improving the decorativeness can be enhanced also by this.

  Further, according to the apparatus 1, when the decorative light image 149 is projected from the decoration forming portion 146 integrally formed on the display board 10 to the front decoration member 70, the decoration lens portion 74 integrally formed on the decoration member 170 decorates the decoration light image 149. The light image 149 is refracted to realize a virtual image light-emitting display. According to this, in combination with the decorative function of the decorative member 70 itself that decorates the display area 2, a three-dimensional light emitting display function can be exhibited, so that the effect of improving decorativeness can be enhanced.

  Furthermore, in the decorative member 70 of the apparatus 1, the edge light unit 76 is illuminated by the inner peripheral light source light guided from the decorative lens unit 74, so that the light source light is reflected forward. According to this, even in the illumination by the inner peripheral light source light whose luminance is attenuated by the light guided through the decorative lens unit 74, it is possible to make the light emitted from the edge light unit 76 stand out and enhance the decorativeness.

(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.

  As a first modification, one of the groove inner surfaces 750 and 752 of each groove portion 75 in the decorative lens portion 74 may be formed in a flat shape that extends straight forward and backward. As a second modification, at least one of the groove inner surfaces 750 and 752 of each groove 75 in the decorative lens portion 74 may be formed in a curved surface shape. Furthermore, as a third modification, a Fresnel lens surface may be formed on the decorative lens portion 74 by employing both of the first and second modifications.

  As modified examples 4 to 6, the structure of the decorative lens unit 74 may be changed as long as the virtual image of the decorative light image 149 can be visually displayed from the front by refraction. Specifically, as a fourth modification, as shown in FIG. 5, a predetermined number of groove portions 75 having a V-shaped cross section having groove inner surfaces 750 and 752 may be arranged on the rear rear surface 74 b of the decorative lens portion 74. In the case of this modification 4, the front surface 174a of the decorative lens portion 74 may be roughened by frosting or the like to increase the light emission luminance. Further, as a fifth modification, as shown in FIG. 6, the bottom portion 146 a that forms the decorative window portion 148 in the decoration forming portion 146 may be separated from the display board 10. In the case of this modification 5, an opening 10a connected to the light guide space 147 in front of the separated bottom portion 146a is formed in the display plate 10 behind the colored translucent decorative lens portion 74, and the opening 10a is formed. Between the periphery and the bottom portion 146a may be covered with a cylindrical light shielding portion 66 formed of a light-impermeable resin such as an ABS resin in the partition member 60. Furthermore, as a sixth modification, a structure in which the groove 75 is not provided may be employed.

  In addition to the above, as a seventh modification, at least one of the decorative illumination unit 72 and the edge light unit 76 may not be formed.

DESCRIPTION OF SYMBOLS 1 Display apparatus for vehicles, 2 Display area, 4 Decoration area, 10 Display board, 50 Peripheral light source, 70 Decoration member, 72 Decoration illumination part, 74 Decoration lens part, 74a Front surface, 75 Groove part, 76 Edge light part, 146 Decoration Forming part, 146a bottom part, 147 light guide space, 148 decorative window part, 149 decorative light image, 750, 752 groove inner surface, 760 reflecting surface

Claims (5)

A display board (10) for displaying vehicle information in the display area (2);
A decoration forming unit (146) that emits and forms a decorative light image (149) by being transmitted and illuminated;
In the decoration area (4) for decorating the display area, the decoration lens section (74) that refracts the decoration light image projected from the decoration formation section on the back, and is separated from the decoration formation section. And a decorative lens unit that emits and displays the decorative light image as a virtual image visible from the front. The decoration forming unit forms a plurality of the decorative light images,
2. The vehicle display according to claim 1, wherein the decorative lens portion includes a predetermined number of groove portions (75) having a V-shaped cross section that refracts the decorative light image by the groove inner surface (750, 752). apparatus.   The vehicle display device according to claim 2, wherein each of the groove portions is formed on a front surface (74a) of the decorative lens portion. The display board integrally forming the decoration forming portion;
The decoration member (70) which is arrange | positioned in front of the said display board, forms the said decorative lens part integrally, and decorates the said display area | region is provided. Vehicle display device. The decorative member is
The vehicle according to claim 4, further comprising an edge light part (76) that is illuminated by light source light guided from an inner peripheral side of the decorative lens part and reflects the light source light forward. Display device.

Images