JP5472085B2 - Vehicle display device - Google Patents

Description

  The present invention relates to a display device for a vehicle that includes a pointer instrument that displays a vehicle state by instructing an indicator with a pointer, and a display panel that displays the vehicle state on a screen.

  There is known a pointer instrument for a vehicle that displays two different vehicle states by causing a pointer to indicate one of two indicators that emit light (see Patent Document 1). The illumination structure of each indicator of this pointer meter is provided with a light source at a position (directly below each indicator) facing each indicator, and one of the two indicators is caused to emit light by turning on one of the light sources. . Hereinafter, a structure in which a light source is provided immediately below an index to be emitted and the index is illuminated by the light source is referred to as a direct illumination structure. There is also known a vehicle display device in which a display panel for displaying a vehicle state on a screen is installed next to an instrument (see Patent Document 2). Thus, by providing a display panel for displaying the state of the vehicle in addition to the instrument, it is possible to increase the information that can be displayed on the vehicle display device.

JP 2009-128242 A JP 2008-76541 A

  Now, a display panel as disclosed in Patent Document 2 is also installed next to a pointer instrument that can display the state of two vehicles with one pointer as disclosed in Patent Document 1, and further There is a demand to install the display panel as close to the pointer instrument as possible.

  As one method of installing the display panel as close as possible to the above-mentioned pointer instrument, there is a method of accommodating a part of the display panel behind the display direction of the display board of the instrument. This method makes it possible to install the display panel as close as possible to the pointer instrument.

  However, since the illumination structure of the pointer instrument disclosed in Patent Document 1 is a direct illumination structure, when a part of the display panel is accommodated behind the display direction of the pointer instrument, from the light source to the index There was a limit in bringing the display panel closer to the pointer instrument due to interference between the optical path of the display and the display panel.

  The present invention has been made in view of the above-described problems, and an object of the present invention is to indicate a pointer instrument that displays two different vehicle states by indicating one of two indicators that emit light with one pointer. On the other hand, it is to provide a display device for a vehicle in which a display panel can be installed as close as possible.

  The invention according to claim 1 of the present application has a first region, a second region, and a third region in which indicators that emit light by transmitting light are arranged side by side along the rotation direction of the pointer, and the second region is the first region. A display panel arranged on the circumference of one region along the rotation direction, and arranged so that the third region is adjacent to the inner and outer peripheries of the first region, facing the first region on the rear side in the display direction of the display plate The first light source that illuminates the first area, provided on the rear side in the display direction of the display panel, the second light source that illuminates the second area, and the third area on the rear side in the display direction of the display board A light source that is provided at a position and is provided between the second light source and the third light source that illuminates the third region, guides incident light from the second light source, and emits the light toward the second region A light guide that forms an accommodation space on the rear side in the display direction, and a rear side in the display direction of the display plate. Separating members that isolate the optical path from the first light source to the first area, the optical path from the second light source to the second area via the light guide, and the optical path from the third light source to the third area from each other. The indicator indicates the respective indicators of the first region and the second region in a state where the indicators of the first region and the second region emit light when the first light source and the second light source emit light. The first vehicle state is displayed by the third light source, the third region indicator emits light, and the pointer indicates the third region indicator, which is different from the first vehicle state. A pointer instrument for displaying the second vehicle state, and a display panel for displaying the vehicle state on the screen, wherein at least a part is housed in the housing space on the rear side in the display direction of the second region, and the display direction of the display board Table along the intersecting direction It is characterized by comprising: a display panel which overlaps with the plate, the.

  According to this invention, since the separating member isolates the optical path from the first light source and the third light source that are opposed to each of the first region and the third region adjacent to the inner and outer periphery, the first region and While the third regions are brought close to each other, the indicators of the respective regions can be made to emit light. In addition, since the isolation member separates the optical path from the second light source to the second area via the light guide from the two optical paths, the second area is arranged along the rotation direction on the circumference of the first area. And the indicator of the second region can be emitted while the first region and the third region are brought close to each other.

  Therefore, the pointer instrument causes the first vehicle to emit light by causing the first light source and the second light source to emit light, and in the state where the respective indicators in the first region and the second region emit light. In a state in which the state is displayed and the third light source emits light and the third region indicator emits light, the second vehicle state can be displayed by instructing the light emitting indicator by the same pointer.

  Here, in the present invention, at least a part of the display panel is accommodated in the accommodating space formed on the rear side in the display direction of the second region. Thus, when the display panel is accommodated in the accommodation space, there is a concern that the second light source cannot be provided at a position facing the second region.

  Therefore, in the present invention, a light guide that guides incident light from the second light source to the second region and forms the housing space on the rear side in the display direction of the second region is provided between the second region and the second light source. In between. According to this, the second area can be illuminated by the second light source without providing the second light source at a position facing the second area, and the housing space is provided on the rear side in the display direction of the second area. Can be formed. By adopting such a light guide, it is possible to install at least a part of the display panel on the rear side in the display direction of the second region while enabling illumination of the second region by the second light source. Become. As a result, the pointer instrument and the display panel overlap each other along the direction intersecting the display direction of the display board. When viewed from the front side of the display direction, the display panel is very close to the pointer instrument. Looks like it is installed.

  As described above, according to the display device for a vehicle that employs the present invention, with respect to the pointer instrument that displays two different vehicle states by indicating one of the two indicators that emit light with one pointer, It is possible to provide a vehicle display device in which the display panel can be installed as close as possible.

  According to a second aspect of the present invention, the second light source is installed at a position facing the inner peripheral side portion of the second region on the display panel, and the accommodation space is open toward the outer peripheral side of the second region. It is characterized by.

  According to this invention, since the second light source is provided at a position facing the inner peripheral side portion of the second region on the display plate, the optical path from the second light source to the second region via the light guide is provided. It is possible to avoid being set on the outer peripheral side of the second region, and it is possible to reliably form an accommodation space opened toward the outer peripheral side of the second region on the rear side in the display direction of the second region. Thus, according to the accommodation space opened toward the outer peripheral side of the second region, it becomes possible to insert a part of the display panel from the outer peripheral side of the second region, and to connect the pointer instrument and the display panel as much as possible. It is possible to reliably realize the installation relationship of close installation.

  According to a third aspect of the present invention, the light guide is extended from the second light source toward the front side in the display direction, and is incident on the light emitted from the second light source, and the end of the incident part on the front side in the display direction And an emission part that emits light from the incident part toward the second region of the display plate, and is extended along the display plate so as to face the second region. The receiving space is provided on the rear side in the display direction of the emitting part and on the side of the incident part.

  According to this invention, in the light guide, the emission part extends along the display plate so as to face the second region, and the display of the incident part extended from the second light source toward the display direction front side. It is optically connected to the front end of the direction. According to the light guide configured as described above, the light incident on the incident part advances toward the front side in the display direction and enters the emission part. Then, the light incident on the emitting portion travels along the display plate and is emitted toward the second region that is oppositely installed. In the light guide that can guide light in this way, the accommodation space is formed on the rear side in the display direction of the emitting portion, and thus a part of the display panel is accommodated on the rear side in the display direction of the second region. Can do. In addition, since the accommodation space is formed on the side of the incident portion, it is possible to form an accommodation space having the length of the incidence portion. According to this, the length along the display direction of the accommodation space can be freely adjusted by adjusting the length of the incident portion.

  The invention according to claim 4 is characterized in that the incident portion is optically connected to a portion of the emission portion facing the inner peripheral side portion of the second region.

  According to this invention, the connection place of an incident part and an output part can be kept away from the outer peripheral side of a 2nd area | region. Therefore, it is possible to ensure a longer length in the direction along the display plate in the accommodation space that is formed on the rear side in the display direction of the emitting portion. According to such a configuration, when the display panel is inserted into the housing space in the direction along the display direction from the outer peripheral side of the second region, the display panel can be inserted deeper into the inner peripheral side of the second region. Thus, the pointer instrument and the display panel can be installed closer to each other.

It is a front view of the combination meter as a display device for vehicles by one embodiment of the present invention. It is a front view of the power condition display meter in case the power condition display meter of the combination meter by one Embodiment of this invention displays the rotational speed of an internal combustion engine. It is a front view of a power condition display meter in case the power condition display meter of the combination meter by one Embodiment of this invention is displaying the system output condition of a hybrid system. It is sectional drawing in the IV-IV line of FIG. It is a top view of a diffusion plate. It is a block diagram which shows the electric constitution of the combination meter by one Embodiment of this invention. It is sectional drawing in the VII-VII line of FIG.

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

(One embodiment)
FIG. 1 is a front view of a combination meter as a vehicle display device according to an embodiment of the present invention. The combination meter 10 shown in FIG. 1 displays various types of vehicle information, and is housed in an instrument panel positioned in front of the vehicle compartment with the display direction facing the viewer. The combination meter 10 according to the present embodiment is particularly mounted on a so-called hybrid vehicle equipped with a hybrid system that uses power output from an internal combustion engine and an electric motor as driving force of the vehicle.

  The combination meter 10 includes a power state display meter 12, a speedometer 14, and a vehicle information display panel 16 (hereinafter referred to as a display panel). As shown in FIG. 1, the power status display meter 12 and the speedometer 14 are arranged side by side in the vehicle width direction, and the vehicle information display panel 16 is disposed between the power status display meter 12 and the speedometer 14. Be placed.

  The power status display meter 12 displays at least one of the rotational speed of the internal combustion engine and the system output status of the hybrid system. FIG. 2 is a front view of the power state display meter 12 when the rotational speed of the internal combustion engine is displayed, and FIG. 3 is a front view of the power state display meter 12 when the system output state of the hybrid system is displayed. It is a front view. FIG. 1 shows a state in which indicators of both the rotational speed and the system output are lit on the display plate 20 of the power status display meter 12. For example, the display of the rotational speed of the internal combustion engine and the display of the system output state of the hybrid system are switched by the driver operating a mode switch 84 installed in the vehicle. The mode changeover switch 84 is a switch for changing the system output tendency of the hybrid system, and has a “SPORT” mode and an “ECO” mode. For example, when the driver switches the mode changeover switch 84 to the “SPORT” mode, for example, a power management control circuit that controls the hybrid system controls the internal combustion engine and the electric motor so that the operation is focused on torque. On the other hand, when the driver switches to the “ECO” mode, the power management control circuit controls the internal combustion engine and the electric motor so that the fuel consumption is minimized. When the mode switch 84 is in the “SPORT” mode, the rotational speed of the internal combustion engine is displayed on the power status display meter 12 (see FIG. 2), and when in the “ECO” mode, the system output The status is displayed (see FIG. 3).

  Hereinafter, each display state will be described with reference to FIGS. 2 and 3. As shown in FIG. 2, the power status display meter 12 that displays the rotational speed of the internal combustion engine indicates the rotational speed of the internal combustion engine by pointing the character 24, the scale 26, and the unit symbol 28 at the tip of the rotating pointer 40. Display. The characters 24, scales 26, and unit symbols 28 are formed on the display board 20 so as to be arranged along the rotation direction of the pointer 40, and emit light by transmission of light incident from the rear side in the display direction to the front side in the display direction. . The character 24 is an index imitating a number, and includes a character 24a composed of the numbers “0” to “5” and a character 24b composed of the numbers “6” to “8”. The scale 26 is a rectangular index whose longitudinal direction is the extending direction of the pointer 40, and includes a scale 26a formed on the outer peripheral side of the character 24a and a scale 26b formed on the outer peripheral side of the character 24b. ing. In addition to the characters 24 and the scale 26, the display board 20 is formed with a unit symbol 28 imitating a symbol indicating the unit of the rotational speed above the center of rotation of the pointer 40 for visual recognition. Each of the characters 24a, the scale 26a, and the unit symbol 28 is formed in the first area 31 formed on the display board 20, and the characters 24b and the scale 26b are formed in the second area 32 formed on the display board 20. Has been. The second area 32 is aligned with the rotation direction of the pointer 40 with respect to the first area 31. In the present embodiment, the portion corresponding to the red zone of the rotational speed of the internal combustion engine in the scale 26b emits red light, and the portions other than the red zone of the characters 24a, 24b, scale 26a, and scale 26b emit light in white. In the present embodiment, the portion other than the red zone emits white light, but the light emission color is not limited to white.

  As shown in FIG. 3, the power status display meter 12 that displays the system output status of the hybrid system indicates that the character 36 and the scale 38 are pointed by the tip of the pointer 40 that moves along the front of the display direction of the display board 20. The system output status is displayed. The characters 36 and the scale 38 are formed on the display panel 20 so as to be arranged along the rotation direction of the pointer 40, and emit light by transmitting light incident from the rear side in the display direction to the front side in the display direction. The character 36 is an index indicating the system output state of the hybrid system, and is composed of indexes “CHARGE”, “ECO”, and “POWER”. Of the characters 36, “CHARGE” is formed between “0” and “1” of the character 24 a and shifted to the rotation center side of the pointer 40. Of the characters 36, “ECO” is formed inside “2” of the character 24a. Of the characters 36, “POWER” is formed at a position shifted to the rotation center side of the pointer 40 from “4” of the character 24 a. The scale 38 is a rectangular index whose longitudinal direction is the direction in which the pointer 40 extends. The scale 38 is formed on the outer peripheral side of the character 24 a and on the inner peripheral side of the scale 26 a, but is not formed in the second region 32. The characters 36 and the scale 38 are formed in the third region 33 formed on the display board 20. In the present embodiment, the third region 33 is formed on the inner peripheral side of the first region 31 where the scale 26a is formed. In addition, a third region 33 where the character 36 is formed is formed on the inner peripheral side of the first region 31 where the character 24a is formed, and a scale 38 is formed on the outer peripheral side of the first region 31 where the character 24a is formed. A third region 33 to be formed is formed. Further, in the present embodiment, in the scale 38, the vicinity of “CHARGE” of the character 36 emits dark blue, the vicinity of “POWER” of the character 36 emits white, and the vicinity of “ECO” of the character 36 becomes light blue. Emits light. When the pointer 40 indicates the dark blue light emission range of the scale 38, the power state display meter 12 displays the state in which the running energy of the vehicle is recovered (regenerated), and the white light emission range is indicated by the pointer 40. Indicates that the hybrid system uses most of the power from the internal combustion engine and the power from the electric motor as power for driving the vehicle. By pointing, the system output state of the hybrid system that suppresses the fuel consumption of the internal combustion engine as much as possible is displayed. In the present embodiment, the color of the character 36 near “ECO” is light blue, but it may be green.

  The speedometer 14 displays the traveling speed of the vehicle. As shown in FIG. 1, the speedometer 14 displays the traveling speed of the vehicle by pointing the character 102a and the scale 102b with the tip of the rotating pointer 106. The characters 102 a and scales 102 b are formed on the display panel 100 so as to be aligned along the rotation direction of the pointer 106, and emit light by light emitted from a light source provided on the display direction rear side of the display panel 100. The character 102a is an index imitating a number. The scale 102b is a rectangular index whose longitudinal direction is the extending direction of the pointer 106, and is formed on the outer peripheral side of the character 102a. In addition to the characters 102a and the scale 102b, the display board 100 is formed with a unit symbol 104 imitating a symbol indicating a unit of traveling speed above the center of rotation of the pointer 106 for visual recognition.

  The display panel 16 displays various information regarding the state of the vehicle such as the vehicle travel distance, instantaneous fuel consumption, average fuel consumption, half-door warning, and tire pressure warning. The display panel 16 is a liquid crystal display panel capable of displaying an arbitrary image on the screen, and displays various information regarding the state of the vehicle on the screen of the display panel 16.

  Next, the mechanical configuration of the power state display meter 12 in the combination meter 10 will be described with reference to FIGS.

  4 is a cross-sectional view taken along line IV-IV in FIG. As shown in FIG. 4, the power status display meter 12 includes a display plate 20, a pointer 40, a circuit board 44, electrical components, a diffusion plate 56, a light guide 62, and a case 74. FIG. 5 is a plan view of the diffusion plate.

  The display panel 20 is formed by laminating a light-shielding print layer having a light-shielding property on a light-transmissive substrate made of, for example, a light-transmitting polycarbonate or acrylic. The character 24, the scale 26, the unit symbol 28, the character 36, and the scale 38 formed on the display board 20 are composed of, for example, a portion exposed from the through-hole of the light-shielding print layer in the light-transmitting substrate, and the rear side in the display direction The light emitted from the LEDs 48a to 48i provided in the light is transmitted to the front side in the display direction.

  The pointer 40 is made of, for example, light-transmitting acrylic, and is disposed on the front side of the display board 20 in the display direction. The rotating shaft 42 of the pointer 40 extends to the rear side in the display direction of the display board 20 through the through hole 39 of the display board 20, and includes a stepper motor 50 that is one of electric components mounted on the circuit board 44 described later. It is connected.

  The circuit board 44 is made of, for example, a hard board such as paper phenol type or glass epoxy type, and a wiring pattern (not shown) made of a predetermined copper foil material is formed on both surfaces. The circuit board 44 is arranged at a predetermined distance from the display board 20 on the rear side in the display direction of the display board 20. On the circuit board 44, a stepper motor 50, a display panel 16, a plurality of light emitting diodes (LEDs) 48a to 48j, and a control unit 54, which are electrical components connected to a wiring pattern, are mounted. The circuit board 44 used in the present embodiment has wiring patterns formed on both sides, but it is also possible to use a four-layer circuit board having wiring patterns inside the circuit board 44. It is.

  The stepper motor 50 includes a rotor that rotates in synchronization with input pulse power, and an output shaft 52 that is integral with the rotor and is connected to the rotating shaft 42 of the pointer 40. The output shaft 52 of the stepper motor 50 rotates to a desired angle in the direction to rotate in accordance with the input pulse power. The stepper motor 50 is mounted on the rear surface of the circuit board 44 in the display direction, and the front end of the output shaft 52 protrudes forward in the display direction through the opening 46.

  The display panel 16 displays an image by applying a voltage to each of a plurality of segment portions formed in advance in a specific shape. The display panel 16 is a transmissive panel that transmits light incident from the rear side in the display direction and displays an image, and is electrically connected to the circuit board 44.

  The LEDs 48a to 48j are semiconductor elements that convert electrical energy into light energy, and emit light when a voltage is applied. All of these LEDs 48a to 48j are mounted on the front surface of the circuit board 44 in the display direction. The LED 48a is “1” to “5” of the characters 24a, the LED 48b is “0” of the characters 24a, the LED 48c is the scale 26a, the LED 48d is the characters 24b and 26b, the LED 48e is the unit symbol 28, and the LED 48f is “CHARGE” among the characters 36, LED48g “POWER” among the characters 36, LED48h “ECO” among the characters 36, LED 48i illuminates the scale 38, and LED 48j illuminates the pointer 40, respectively. The light source.

  As shown in FIG. 5, the diffusion plate 56 has a plurality of diffusion portions 58a to 58i made of a resin such as polycarbonate or acrylic. The diffusion parts 58a to 58i are silicon beads or glass beads as a particulate light diffuser that diffuses light into a light-transmitting resin, and a pigment (milky white) that adjusts the color of light and the amount of transmitted light. Is included. With these inclusions, the diffusing parts 58a to 58i diffuse incident light and make the light emission luminance distribution of the diffusing parts 58a to 58i uniform.

  Specifically, the light incident on each of the diffusion parts 58a to 58i is diffused to every corner by the silicon beads and the glass beads contained in the diffusion parts 58a to 58i. However, with this alone, the portion where the distance between the light source and the diffusing portion is short is in a relatively high luminance state compared to the far portion, and distribution occurs in the light emission luminance on the surface of the diffusing portion. In order to eliminate this distribution, pigments for adjusting the amount of light transmission are included in the diffusion portions 58a to 58i. This light transmission amount adjustment function makes the light emission luminance distribution of the diffusion portions 58a to 58i uniform. Further, the thicknesses of the diffusion portions 58a to 58i are substantially the same.

  The light diffused by the diffusing unit 58a is incident on “1” to “5” of the character 24a, and the light diffused by the diffusing unit 58b is incident on “0” of the character 24a. The light diffused by the diffusing portion 58c is incident on the scale 26a, and the light diffused by the diffusing portion 58d is incident on the character 24b and the scale 26b, and the diffusing portion 58e. Is diffused by the diffuser 58g. The light diffused by the diffuser 58f is incident on "CHARGE" of the characters 36 and is diffused by the diffuser 58g. The light is incident on “POWER” of the character 36, and the light diffused by the diffusion unit 58 h is incident on “ECO” of the character 36. And Tsu, light diffused by the diffusion unit 58i is made incident on the scale 38.

  The diffusion plate 56 has a black resin portion 60 having a light shielding property, and the diffusion portions 58 a to 58 i are held by the black resin portion 60. The black resin portion 60 is also made of a resin such as polycarbonate, acrylic, or elastomer, or an ABS resin. The diffusion plate 56 is disposed so as to be in contact with the rear surface in the display direction of the display plate 20. The diffusion plate 56 is formed by two-color molding of the black resin portion 60 and the diffusion portions 58a to 58i. The diffusion portions 58a to 58i are connected to each other with the black resin portion 60 interposed therebetween. For this reason, the plurality of diffusion portions 58a to 58i can be handled as one component, and the combination meter 10 can be easily manufactured.

  The light guide 62 is made of, for example, light-transmitting acrylic, and is disposed further on the rear side in the display direction of the diffusion plate 56. Acrylic is a material having relatively high transparency among resin materials, and has higher transparency than polycarbonate. The light guide 62 guides the light emitted from the LED 48d to the characters 24b and the scale 26b. The light guide 62 is provided to face the LED 48d, and is provided to face the incident surface 64 on which light emitted from the LED 48d is incident, and the second region 32 where the characters 24b and the scale 26b are formed. 66 and a reflecting surface 68 provided in the middle of the optical path between the incident surface 64 and the exit surface 66. The reflection surface 68 is provided at a position facing the emission surface 66. The surface of the reflecting surface 68 on the side facing the emitting surface 66 has an uneven shape so that incident light is diffusely reflected. Light incident from the incident surface 64 is diffusely reflected by the reflecting surface 68 on the way to the output surface 66. The light diffusely reflected by the reflection surface 68 is emitted from the emission surface 66 toward the characters 24b and the scale 26b.

  The case 74 includes a first inner case 76, a second inner case 78, a lower case 80, and the like. The first inner case 76 is formed of a white resin material such as polypropylene. The first inner case 76 holds the display plate 20 and the diffusion plate 56 at the end portion on the front side in the display direction, and holds the circuit board 44 at the end portion on the rear side in the display direction. The second inner case 78 is formed of a resin material such as polypropylene. The second inner case 78 is disposed on the front side in the display direction of the circuit board 44 and holds the display panel 16.

  The lower case 80 is a bottomed container formed of a resin material such as polypropylene. The lower case 80 is assembled to the rear side in the display direction of the first inner case 76 by a fixing claw (not shown) or the like. The lower case 80 accommodates the circuit board 44 and the like, thereby preventing dust and dirt from adhering to the circuit board 44 from the rear side in the display direction.

  Next, the electrical configuration of the combination meter 10 will be described with reference to FIG. Here, the electrical configuration of the power state display meter 12 and the display panel 16 will be described.

  The combination meter 10 is electrically configured by a control unit 54, a stepper motor 50, a display panel 16, LEDs 48a to 48j, a mode switch 84, and the like. The combination meter 10 is connected to an external battery 86, a relay 88, a controller area network (CAN) 90 that is an in-vehicle network, and a grounded ground wiring 96.

  The control unit 54 is composed of a microcomputer that operates according to a program. The control unit 54 includes a power supply system that is always in conduction with the battery 86 and a power supply system via the relay 88, and power is supplied from the battery 86. In addition, the control unit 54 is connected to an in-vehicle network such as the CAN 90, for example, and information on the vehicle output to the CAN 90, specifically, the rotational speed of the internal combustion engine, the system output state of the hybrid system, the vehicle Information such as travel speed, fuel consumption, door open / close state, seat belt wearing state, and ON / OFF state of the engine switch 92 is acquired.

  The control unit 54 is electrically connected to the stepper motor 50, the display panel 16, the LEDs 48a to 48j, the mode switch 84, and the like. The control unit 54 calculates a rotation direction, a rotation angle, and a rotation speed that the output shaft 52 (see FIG. 4) should rotate based on the acquired information about the rotation speed of the internal combustion engine or the system output state, and the calculation result Is output to the stepper motor 50. Further, the control unit 54 controls the application of voltage to the LEDs 48a to 48j based on information such as the state of the mode switch 84 and the ON / OFF state of the engine switch 92. Further, the control unit 54 calculates the cumulative travel distance, instantaneous fuel efficiency, and average fuel efficiency based on the vehicle travel speed and the fuel consumption of the internal combustion engine. Based on these calculated values, information on the door opening / closing state and seat belt wearing state, and the operation state of a display changeover switch (not shown), the voltage applied to the plurality of segment portions of the display panel 16 is controlled.

  On the CAN 90, a power supply control circuit 94 is provided. The power supply control circuit 94 is connected to a battery 86, an engine switch 92, a relay 88, an engine control circuit (not shown), and the like. The battery 86 supplies power to the power supply control circuit 94. When the power supply control circuit 94 detects a pressing operation of the engine switch 92 by the driver, the power supply control circuit 94 applies a voltage from the battery 86 to the relay 88 to turn on the relay 88. Further, the power supply control circuit 94 outputs information related to the start / stop state of the vehicle on the CAN 90 based on the detected pressing operation of the engine switch 92 by the driver. In addition, the starting state of a vehicle means the state which can drive a vehicle, when a driver | operator operates the accelerator provided in the vehicle.

  According to the above configuration, when the driver operates the engine switch 92, the power supply control circuit 94 sets the vehicle state to the activated state. At this time, the power supply control circuit 94 applies a voltage to the relay 88 to make the battery 86 and the control unit 54 conductive. At the same time, information on the vehicle activation state is output on the CAN 90. After acquiring information that the state of the vehicle is the activated state, the control unit 54 starts acquiring information about the vehicle through the CAN 90. The control unit 54 controls electrical components such as the connected stepper motor 50 based on the information acquired from the CAN 90.

  Specifically, the control unit 54 acquires information indicating that the mode changeover switch 84 is in the “SPORT” mode, so that the LEDs 48 a to e and j are turned on and the rotation speed of the internal combustion engine is determined. Rotation of the output shaft 52 of the stepper motor 50 to an angle. As a result, the power status display meter 12 starts displaying the rotational speed of the internal combustion engine (see FIG. 2). On the other hand, the control unit 54 obtains information indicating that the mode changeover switch 84 is in the “ECO” mode, thereby turning on the LEDs 48f to 48j and a stepper to an angle corresponding to the system output state of the hybrid system. The output shaft 52 of the motor 50 is rotated. Thereby, the power status display meter 12 starts displaying the system output status of the hybrid system (see FIG. 3).

  When the engine switch 92 is operated again by the driver, the power supply control circuit 94 sets the vehicle state to the stop state. At this time, the power supply control circuit 94 stops the application of the voltage to the relay 88 and stops the conduction between the battery 86 and the control unit 54. At the same time, information indicating that the vehicle is in a stopped state is output on the CAN 90. After acquiring information that the state of the vehicle is a stop state, the control unit 54 stops applying voltage to the LEDs 48a to 48j and outputs pulse power that causes the output shaft 52 to return to the stepper motor 50. To do. By the operation of the control unit 54, the LEDs 48a to 48j stop emitting light, and the stepper motor 50 causes the output shaft 52 to return to zero.

(Characteristic part)
Hereinafter, the characteristic part of the combination meter 10, especially the power status display meter 12 and the display panel 16 by one Embodiment of this invention is demonstrated.

  As shown in FIG. 2, the characters 24a, scales 26a, and unit symbols 28 that emit light when displaying the rotational speed of the internal combustion engine are formed in the first region 31 having a sector shape, as shown in FIG. . And the character 24b and the scale 26b are formed in the 2nd area | region 32 which exhibits the sector shape provided along with the rotation direction of the pointer | guide 40 with respect to the 1st area | region 31, as shown in FIG. In the present embodiment, the first region 31 is located on the left side toward the power state display meter 12, and the second region 32 is located on the right side toward the power state display meter 12.

  FIG. 5 is a plan view of the diffusion plate 56. This figure is a diagram for explaining the positions of the character 24, the scale 26, the unit symbol 28, the character 36, the scale 38, and the positions of the LEDs 48a-i with respect to the diffusion portions 58a to 58i. , Scale 26, unit symbol 28, character 36, scale 38 are indicated by broken lines, and LEDs 48a to 48i are indicated by alternate long and short dash lines.

  Each of the LEDs 48a to 48c, e is installed in front of the display direction of the circuit board 44 so as to face the characters 24a, the scale 26a, and the unit symbol 28 of the first region 31, and the LED 48d is a character 24b of the second region 32, The display direction of the circuit board 44 is set in front of the display direction of the circuit board 44 facing the inner peripheral portion of the scale 26b, and each of the LEDs 48f to 48i faces the character 36 and the scale 38 of the third area 33. The LED 48j is installed on the front surface of the circuit board 44 in the display direction so as to face the end of the pointer 40 on the rotating shaft 42 side.

  All the colors of light emitted from the LEDs 48a to 48j are substantially the same color. In the present embodiment, the light colors of the LEDs 48a to 48j are all white. Of the characters 24a, scale 26a, characters 24b, and scale 26b, the portions other than the red zone are transparent so that the white light of the LEDs 48a to 48d and e can be transmitted as they are, so that the white light can be emitted. The red zone portion of the scale 26b contains a red pigment so that red light can be emitted. Since it is sufficient that the red zone portion can emit red light, a red filter may be provided in the portion. The character 36 is transparent so that the white light of the LEDs 48f, g, h can be transmitted as it is. The portion of the scale 38 that emits white light is transparent so that the white light of the LED 48i can be transmitted as it is. The portion of the scale 38 that emits dark blue contains a dark blue pigment so that it can emit light in dark blue. The portion of the scale 38 that emits light blue light contains a light blue pigment so that light can be emitted light blue. The dark blue and light blue light emitting portions may emit dark blue and light blue light, respectively, and therefore dark blue and light blue filters may be provided in the portions.

  The diffusing portion 58a is arranged at a position facing “1” to “5” among the characters 24a in the first region 31. The diffusing portion 58 b is disposed at a position facing “0” among the characters 24 a in the first region 31. The diffusion portion 58 c is disposed at a position facing the scale 26 a in the first region 31. The diffusion parts 58a and c have a fan shape. The diffusion part 58c is disposed on the outer peripheral side of the diffusion parts 58a and 58b. The diffusing portion 58d is disposed at a position facing the character 24b and the scale 26b in the second region 32. The diffusing part 58d has a larger fan shape than the diffusing parts 58a, b, and c, and is arranged side by side in the rotation direction of the pointer 40 with respect to the diffusing parts 58a and c. The diffusing portion 58e is disposed at a position facing the unit symbol 28.

  The diffusing unit 58f is disposed at a position facing the “CHARGE” in the character 36. The diffusing portion 58g is arranged at a position facing the “POWER” in the character 36. The diffusing portion 58h is disposed at a position facing the “ECO” in the character 36. The diffusion portion 58 i is disposed at a position facing the scale 38. The diffusion unit 58f is disposed between the diffusion unit 58a and the diffusion unit 58b, and the diffusion unit 58g is disposed between the diffusion unit 58a and the diffusion unit 58e. The diffusion portion 58h is disposed between the diffusion portion 58f and the diffusion portion 58g. In addition, the diffusion part 58i is disposed between the diffusion parts 58a and 58b and the diffusion part 58c.

  Each of the diffusing parts 58a to 58c covers all of the characters 24a, the scale 26a, and the unit symbol 28 in the first area 31, and the diffusing part 58d has the characters 24b and the scale 26b in the second area 32. It covers everything. Further, each of the diffusing portions 58f to 58i covers all the characters 36 and the scale 38 of the third region 33.

  The light guide 62 includes an incident portion 70 having an incident surface 64 at an end on the rear side in the display direction, and an emitting portion 72 having a fan shape and having an emitting surface 66 and a reflecting surface 68. The incident portion 70 faces the LED 48d and extends from the incident surface 64 positioned on the rear side in the display direction toward the front side in the display direction. The end portion on the front side in the display direction is optically connected to the emission portion 72. ing. The emission part 72 extends from the end of the incident part 70 on the front side in the display direction along a direction intersecting the display direction (a direction along the display board 20) and toward the outer peripheral side of the display board 20. Further, the incident portion 70 is connected to a portion of the emission portion 72 that faces the inner peripheral side portion of the second region 32. An emission surface 66 is formed on the front surface of the emission unit 72 in the display direction, and a reflection surface 68 is formed on the rear surface in the display direction. The emission portion 72 has a smaller thickness toward the outer peripheral side of the display panel 20. The surface on which the emission surface 66 is formed is substantially parallel to the display plate 20, and the surface on which the reflection surface 68 is formed is closer to the display plate 20 toward the outer periphery. Inclined. According to the light guide 62 configured in this way, the light that has entered the incident portion 70 from the LED 48d through the incident surface 64 travels in the incident portion 70 toward the front end in the display direction, and optically. The light enters the connected emission part 72. The light that has entered the emitting portion 72 is diffusely reflected by the reflecting surface 68 that is inclined with respect to the display panel 20. The diffusely reflected light travels toward the exit surface 66 located on the front side in the display direction, is emitted from the exit surface 66, and enters the characters 24b and the scale 26b in the second region 32. According to the light guide 62 having such an optical path, even if the LED 48d is disposed at a position facing the character 24b of the second region 32 and the inner peripheral portion of the scale 26b, the light emitted from the LED 48d. Can be made incident on the character 24b and the scale 26b.

  FIG. 7 shows a cross section taken along line VII-VII in FIG. The first inner case 76 includes isolation portions 82a to 82j that isolate adjacent optical paths. Each isolation part 82a-j is comprised so that the circumference | surroundings of the through-hole 39 of the spreading | diffusion part 58a-i and the display board 20 may be surrounded. Moreover, in these isolation | separation parts 82a-j, the edge part of the display direction front side is in contact with the black resin part 60 of the diffusion plate 56, or the display surface rear surface of the display board 20, and the edge part of the display direction rear side is a circuit. The substrate 44 is in contact with the front of the display direction. The separators 82 a to 82 j are in contact with the display plate 20, the diffusion plate 56, and the circuit board 44, so that the display plate 20, the diffusion plate 56, and the circuit board 44 are held by the first inner case 76.

  The isolation portions 82 a to 82 c and e to j excluding the isolation portion 82 d are provided substantially perpendicular to the diffusion plate 56. Thereby, it becomes possible to arrange | position LED48a-c and e-i in the position facing spreading | diffusion part 58a-c, e-i. Therefore, the LEDs 48 a to c and e are arranged to face the characters 24 a, the scale 26 a and the unit symbol 28 in the first region 31, and the LEDs 48 f to i are arranged to face the characters 36 and the scale 38. Further, the separating portion 82 d has a shape that follows the rear surface of the light guide 62 in the display direction, and covers the rear surface of the light guide 62 in the display direction. Further, the side walls of the isolation portions 82a to 82j are white, and the light emitted from the LEDs 48a to 48j can be efficiently guided to the characters 24a, the scale 26a, the unit symbol 28, the characters 24b, the scale 26b, and the pointer 40. It can be done.

  Moreover, in this embodiment, the isolation | separation part 82a-i is the optical path to the character 24a of the 1st area | region 31 corresponding to each of LED48a-c, e from each of the LED 26a, the scale 26a, and the unit symbol 28, LED48d through the light guide 62. The light path to the character 24b and the scale 26b in the second region 32 and the light path to the character 36 and the scale 38 in the corresponding third region 33 from each of the LEDs 48f to 48i are isolated.

  The isolation parts 82a-c, e, and the isolation parts 82f-i are used for the optical paths from the LEDs 48a-c, e and the LEDs 48f-i, which are placed opposite to the first area 31 and the third area 33 adjacent to the inner and outer circumferences. Since the first region 31 and the third region 32 are brought close to each other, the characters 24a and scale 26a of the first region 31, the unit symbol 28 and the characters 36 and scale 38 of the third region 33 are caused to emit light. be able to.

  Moreover, since the isolation part 82d isolates the optical path from the LED 48d to the second region 32 via the light guide 62, the second region 32 aligned with the first region 31 along the rotation direction on the circumference, The character 24b and the scale 26b in the second region 32 can be caused to emit light while bringing the first region 31 and the third region 33 closer to each other.

  Since the isolation portions 82a to 82i having such an optical path isolation function are provided on the rear side in the display direction of the display board 20, the LEDs 48a to 48e and the LEDs 48f to 48i are selectively made to emit light. The characters 24a, scales 26a, unit symbols 28, characters 24b, scales 26b, characters 36, and scales 38 of the second regions 31 and 32 can be selectively emitted. Moreover, according to the isolation | separation part 82a-i which has such an optical path isolation function, the 1st area | region 31, the 2nd area | region 32, and the 3rd area | region 33 can be mutually approached. For this reason, the character 24 a and the scale 26 a in the first area 31 and the second area 32, and the character 36 and the scale 38 in the third area 33 can be indicated by one pointer 40.

  Further, since the diffusing parts 58a to 58i are connected to each other with the black resin part 60 interposed therebetween, the light incident on the diffusing parts 58a to 58i does not enter the other diffusing parts 58a to 58i. It is emitted toward 31, 32, 33. Since the diffusing portions 58a to 58i have such a structure, the characters 24a, the scale 26a, the unit symbol 28, the characters 24b, the scale 26b, or the third area 33 of the first and second areas 31, 32 are surely formed. The characters 36 and the scale 38 can be selectively emitted.

  In the combination meter 10 of the embodiment described so far, when the mode changeover switch 84 is operated to the “SPORT” mode and the LEDs 48 a to e and j are lit, the characters 24 a, the scale 26 a, and the unit symbol 28 in the first region 31. Emits light by light emitted from the LEDs 48a to 48c and e. In particular, in this embodiment, since the diffusion portions 58a to 58c and e are provided between the LEDs 48a to 48c and the first region 31, the characters 24a, the scale 26a, and the unit symbol 28 in the first region 31 are provided. The light diffused by the diffusing parts 58a to 58c and e enters. Thus, by providing the diffusing parts 58a to c and e, the LEDs 48a to c and e are arranged to face the character 24a, the scale 26a, and the unit symbol 28 of the first region 31, and the LEDs 48a to c and e are arranged. Even if it has an illumination structure in which the character 24a, the scale 26a, and the unit symbol 28 are illuminated by the light emitted from the light, the occurrence of uneven emission luminance of the character 24a, the scale 26a, and the unit symbol 28 is suppressed. Can do.

  Further, according to the present embodiment, the light guide that is radiated from the LED 48 d provided at a position facing the inner peripheral side portion of the second region 32 on the display panel 20 and is provided between the LED 48 d and the second region 32. Due to the light guided by 62, the characters 24b and the scale 26b in the second region 32 emit light. The light guide 62 has a reflection surface 68 that diffuses and reflects the light from the LED 48 d toward the emission surface 66, so that the light diffusely reflected by the reflection surface 68 is a character in the second region 32. 24b and the scale 26b. Thus, the light guide 62 having the reflecting surface 68 is provided between the LED 48d and the second region 32, and the light 24b and the scale 26b in the second region 32 are illuminated by the light guided by the light guide 62. According to the structure, it is possible to suppress the occurrence of uneven light emission luminance of the characters 24b and the scale 26b.

  As described above, even if the characters 24a, 24b, scale 26a, scale 26b, and unit symbol 28 emit light with different illumination structures, the characters 24a, scale 26a, unit symbol 28 of the first region 31, In addition, it is possible to suppress the occurrence of uneven light emission luminance of the characters 24b and the scale 26b in the second region 32. Further, according to the present embodiment, the light emitted from the LEDs 48f to 48i and incident on the diffusers 58f to 58i and diffused is incident on the characters 36 and the scale 38 of the third region 33. It is possible to suppress the occurrence of light emission luminance unevenness at 36 and the scale 38.

  Here, in the present embodiment, as shown in FIG. 4, a part of the display panel 16 is formed on the rear side in the display direction of the second region 32. Thus, if a part of the display panel 16 is accommodated in the accommodation space 73, there is a concern that the LED 48d cannot be provided at a position facing the second region 32.

  Therefore, in the present embodiment, the light guide 62 that guides the incident light from the LED 48d to the second region 32 and forms the accommodation space 73 on the rear side in the display direction of the second region 32 is provided with the second region 32 and the LED 48d. Between. According to such a light guide 62, the LED 48d can illuminate the second area 32 without providing the LED 48d at a position facing the second area 32, and the second area 32 is located behind the display direction. The accommodation space 73 can be formed.

  By adopting such a light guide 62, it is possible to install a part of the display panel 16 on the rear side in the display direction of the second region 32 while enabling illumination of the second region 32 by the LED 48d. It becomes. As a result, the power state display meter 12 and the display panel 16 overlap each other along the direction intersecting the display direction of the display board 20, and when these parts 12 and 16 are viewed from the front side in the display direction, the display panel 16 Appears to be placed very close to the power status indicator 12.

  As described above, according to this embodiment, the two indicators that emit light (the first region 31, the characters 24 a and b of the second region 32, the scales 26 a and b, the character 36 and the scale 38 of the third region 33). ) Is indicated on the power state display meter 12 that displays two different vehicle states (the state of the rotational speed of the internal combustion engine and the system output state of the hybrid system). The combination meter 10 in which the panel 16 can be installed as close as possible can be provided.

  As described above, the light guide 62 faces the LED 48d and extends from the incident surface 64 positioned on the rear side in the display direction toward the front side in the display direction, and the front side in the display direction of the incident unit 70. And an output portion 72 extending in a direction along the display plate 20. With such a light guide 62, the accommodation space 73 having a height corresponding to the length from the incident surface 64 of the incident portion 70 to the connection portion with the emission portion 72 is disposed on the rear side in the display direction of the emission portion 72. Can be secured.

  By adopting such a light guide 62, the light emitted from the LED 48d is incident on the characters 24b and the scale 26b of the second region 32 without providing the LED 48d on the rear side in the display direction of the second region 32. Can be made. According to such a light guide 62, as described above, the accommodation space 73 is formed on the rear side in the display direction of the emitting portion 72, that is, on the rear side in the display direction of the second region 32. A part of the display panel 16 can be accommodated. As a result, the display panel 16 and the power status display meter 12 overlap in the direction intersecting the display direction of the display board 20, that is, the direction along the surface of the display board 20, so that these are displayed from the front side in the display direction. When viewed, it appears that the display panel 16 is installed very close to the power status display meter 12.

  Further, in the present embodiment, the LED 48 d is provided at a position facing the inner peripheral side portion of the second region 32 on the display panel 20, and the accommodation space 73 is open toward the outer peripheral side of the second region 32. .

  In this way, when the LED 48d is provided at a position facing the inner peripheral side portion of the second region 32 on the display board 20, the optical path from the LED 48d to the second region 32 via the light guide 62 is second. It is possible to avoid setting the outer peripheral side of the region 32, and it is possible to reliably form the accommodation space 73 opened toward the outer peripheral side of the meter 12 on the rear side in the display direction of the second region 32. . Thus, according to the accommodation space 73 that is open toward the outer peripheral side of the second region 32, a part of the display panel 16 can be inserted from the outer peripheral side of the second region 32, and the meter 12 The installation relationship of installing the display panel 16 as close as possible can be reliably realized.

  Further, in the present embodiment, in the light guide 62, the emission portion 72 extends along the display plate 20 so as to face the second region 32, and is incident toward the display direction front side from the LED 48d. The receiving space 73 is optically connected to an end portion on the front side in the display direction of the portion 70, and the accommodation space 73 is formed on the rear side in the display direction of the emitting portion 72. For this reason, a part of the display panel 16 can be accommodated behind the second region 32 in the display direction. In addition, since the accommodation space 37 is formed on the side of the incident portion 70, it is possible to form an accommodation space 73 having the length of the incident portion 70. According to this, the length along the display direction of the accommodation space 73 can be freely adjusted by adjusting the length of the incident portion 70.

  In the present embodiment, the incident portion 70 is optically connected to a portion of the emission portion 72 that faces the inner peripheral portion of the second region 32. According to this configuration, the connection place between the incident part 70 and the emission part 72 can be kept away from the outer peripheral side of the second region 32. Therefore, it is possible to ensure a longer length in the direction along the display plate 20 in the accommodation space 73 to be formed on the rear side in the display direction of the emitting portion 72. According to such a configuration, since the length along the display direction can be ensured in the accommodation space 73, the display panel 16 is placed in the accommodation space 73 in the direction along the display direction from the outer periphery side of the second region 32. When inserting, the display panel 16 can be inserted deeper into the inner peripheral side of the second region 32, and the meter 12 and the display panel 16 can be placed closer to each other.

  The power status display meter 12 of the present embodiment corresponds to a “pointer meter” described in the claims, the LEDs 48a to c and e correspond to a “first light source” described in the claims, and the LED 48d. Corresponds to the “second light source” recited in the claims, and the LEDs 48f to 48i correspond to the “third light source” recited in the claims. Further, the first inner case 76 of the present embodiment corresponds to an “isolation member” recited in the claims.

  In the present embodiment, as shown in FIG. 3, when the system output state of the hybrid system is displayed on the power state display meter 12, the scale 26 a is not lighted. The scale 26a may be caused to emit light after the rotation speed display state of the internal combustion engine. That is, the scale 26 a emits light regardless of the display content of the power status display meter 12. In such a case, in particular, in the first region 31, the region where the characters 24 a and the unit symbol 28 are formed serves as both the “first region” and the “third region” described in the claims. The LED 48c serves as both the “first light source” and the “third light source” recited in the claims.

(Other embodiments)
In the above, several embodiment of this invention was described. The present invention is not construed as being limited to the above-described embodiments, and can be applied to various embodiments without departing from the scope of the invention.

  In the previous embodiment, the character 36 of the third region 33 is arranged on the inner periphery of the character 24a of the first region 31, and the scale 38 of the third region 33 is placed between the character 24a of the first region 31 and the scale 26a. Although it arrange | positions, you may arrange | position the character 36 of the 3rd area | region 33, and the arrangement position of the scale 38 on the outer peripheral side of the character 24a of the 1st area | region 31, and the scale 26a, for example.

  DESCRIPTION OF SYMBOLS 10 Combination meter (vehicle display device), 12 Power condition display meter (pointer meter), 14 Speedometer, 16 Vehicle information display panel (display panel), 20 Display board, 24 characters, 26 scales, 28 Unit symbol, 31 One area, 32 Second area, 33 Third area, 36 characters, 38 scale, 39 Through hole, 40 Pointer, 44 Circuit board, 48a LED (first light source), 48b LED (first light source), 48c LED (first One light source), 48d LED (second light source), 48e LED (first light source), 48f LED (third light source), 48g LED (third light source), 48h LED (third light source), 48i LED (third light source) ), 48j LED, 50 stepper motor, 54 control unit, 56 diffusion plate, 58a to i diffusion unit, 60 black resin unit, 62 light guide, , 64 entrance surface, 66 exit surface, 68 reflection surface, 70 entrance portion, 72 exit portion, 73 housing space, 74 case, 76 first inner case (isolation member), 84 mode change switch

Claims (4)

A first region, a second region, and a third region, each of which is formed with an indicator that emits light by transmission along the rotation direction of the pointer, and the second region is circumferential with respect to the first region A display board arranged along the rotation direction on the upper side, and arranged such that the third region is adjacent to the inner and outer circumferences of the first region,
A first light source that is provided at a position facing the first region on the rear side in the display direction of the display plate and illuminates the first region;
A second light source provided on the display direction rear side of the display plate and illuminating the second region;
A third light source that is provided at a position facing the third region on the rear side in the display direction of the display plate and illuminates the third region;
A light guide provided between the second region and the second light source, which guides incident light from the second light source and emits the light toward the second region; And a light path from the first light source to the first region, and from the second light source to the second region via the light guide. And an isolation member that isolates each of the optical paths from the third light source to the third region,
When the first light source and the second light source emit light, the indicators of the first region and the second region emit light in the state where the indicators of the first region and the second region emit light. By indicating the first vehicle state, the third light source emits light, and when the indicator of the third region emits light, the pointer indicates the indicator of the third region. A pointer instrument for displaying a second vehicle state different from the first vehicle state;
A display panel for displaying a vehicle state on a screen, wherein at least a part is accommodated in the accommodation space on the rear side in the display direction of the second region, and the display is performed along a direction intersecting the display direction of the display board A display device for a vehicle, comprising: a display panel overlapping with a plate.   The second light source is installed at a position facing an inner peripheral side portion of the second region on the display plate, and the accommodation space is open toward an outer peripheral side of the second region. The vehicle display device according to claim 1. The light guide is extended toward the front side in the display direction from the second light source, and optically enters an incident portion that receives light emitted from the second light source, and an end portion on the front side in the display direction of the incident portion. An emission part that is connected and extends along the display plate so as to face the second region, and emits light from the incident part toward the second region of the display plate; With
The vehicle display device according to claim 1, wherein the housing space is provided on the rear side in the display direction of the emitting portion and on the side of the incident portion.   The vehicle display device according to claim 3, wherein the incident portion is optically connected to a portion of the emission portion that faces a portion on the inner peripheral side of the second region.

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